diff options
Diffstat (limited to 'drivers/usb')
132 files changed, 11032 insertions, 8765 deletions
diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c index 90583d6a594..507a9bd0d77 100644 --- a/drivers/usb/atm/cxacru.c +++ b/drivers/usb/atm/cxacru.c @@ -1052,7 +1052,6 @@ static int cxacru_bind(struct usbatm_data *usbatm_instance, instance->usbatm = usbatm_instance; instance->modem_type = (struct cxacru_modem_type *) id->driver_info; - memset(instance->card_info, 0, sizeof(instance->card_info)); mutex_init(&instance->poll_state_serialize); instance->poll_state = CXPOLL_STOPPED; diff --git a/drivers/usb/atm/speedtch.c b/drivers/usb/atm/speedtch.c index 7d27c9cf3c4..76fce44c2f9 100644 --- a/drivers/usb/atm/speedtch.c +++ b/drivers/usb/atm/speedtch.c @@ -829,7 +829,6 @@ static int speedtch_bind(struct usbatm_data *usbatm, if (use_isoc) { const struct usb_host_interface *desc = data_intf->cur_altsetting; const __u8 target_address = USB_DIR_IN | usbatm->driver->isoc_in; - int i; use_isoc = 0; /* fall back to bulk if endpoint not found */ diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index c3201affa0b..95ae6377d7e 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -159,12 +159,34 @@ static void acm_write_done(struct acm *acm, struct acm_wb *wb) spin_lock_irqsave(&acm->write_lock, flags); acm->write_ready = 1; wb->use = 0; + acm->transmitting--; spin_unlock_irqrestore(&acm->write_lock, flags); } /* * Poke write. + * + * the caller is responsible for locking */ + +static int acm_start_wb(struct acm *acm, struct acm_wb *wb) +{ + int rc; + + acm->transmitting++; + + wb->urb->transfer_buffer = wb->buf; + wb->urb->transfer_dma = wb->dmah; + wb->urb->transfer_buffer_length = wb->len; + wb->urb->dev = acm->dev; + + if ((rc = usb_submit_urb(wb->urb, GFP_ATOMIC)) < 0) { + dbg("usb_submit_urb(write bulk) failed: %d", rc); + acm_write_done(acm, wb); + } + return rc; +} + static int acm_write_start(struct acm *acm, int wbn) { unsigned long flags; @@ -182,26 +204,31 @@ static int acm_write_start(struct acm *acm, int wbn) return 0; /* A white lie */ } + wb = &acm->wb[wbn]; + if(acm_wb_is_avail(acm) <= 1) + acm->write_ready = 0; + + dbg("%s susp_count: %d", __func__, acm->susp_count); + if (acm->susp_count) { + acm->old_ready = acm->write_ready; + acm->delayed_wb = wb; + acm->write_ready = 0; + schedule_work(&acm->waker); + spin_unlock_irqrestore(&acm->write_lock, flags); + return 0; /* A white lie */ + } + usb_mark_last_busy(acm->dev); + if (!acm_wb_is_used(acm, wbn)) { spin_unlock_irqrestore(&acm->write_lock, flags); return 0; } - wb = &acm->wb[wbn]; - if(acm_wb_is_avail(acm) <= 1) - acm->write_ready = 0; + rc = acm_start_wb(acm, wb); spin_unlock_irqrestore(&acm->write_lock, flags); - wb->urb->transfer_buffer = wb->buf; - wb->urb->transfer_dma = wb->dmah; - wb->urb->transfer_buffer_length = wb->len; - wb->urb->dev = acm->dev; - - if ((rc = usb_submit_urb(wb->urb, GFP_ATOMIC)) < 0) { - dbg("usb_submit_urb(write bulk) failed: %d", rc); - acm_write_done(acm, wb); - } return rc; + } /* * attributes exported through sysfs @@ -304,6 +331,7 @@ static void acm_ctrl_irq(struct urb *urb) break; } exit: + usb_mark_last_busy(acm->dev); retval = usb_submit_urb (urb, GFP_ATOMIC); if (retval) err ("%s - usb_submit_urb failed with result %d", @@ -320,8 +348,11 @@ static void acm_read_bulk(struct urb *urb) dbg("Entering acm_read_bulk with status %d", status); - if (!ACM_READY(acm)) + if (!ACM_READY(acm)) { + dev_dbg(&acm->data->dev, "Aborting, acm not ready"); return; + } + usb_mark_last_busy(acm->dev); if (status) dev_dbg(&acm->data->dev, "bulk rx status %d\n", status); @@ -331,6 +362,7 @@ static void acm_read_bulk(struct urb *urb) if (likely(status == 0)) { spin_lock(&acm->read_lock); + acm->processing++; list_add_tail(&rcv->list, &acm->spare_read_urbs); list_add_tail(&buf->list, &acm->filled_read_bufs); spin_unlock(&acm->read_lock); @@ -343,7 +375,8 @@ static void acm_read_bulk(struct urb *urb) /* nevertheless the tasklet must be kicked unconditionally so the queue cannot dry up */ } - tasklet_schedule(&acm->urb_task); + if (likely(!acm->susp_count)) + tasklet_schedule(&acm->urb_task); } static void acm_rx_tasklet(unsigned long _acm) @@ -354,16 +387,23 @@ static void acm_rx_tasklet(unsigned long _acm) struct acm_ru *rcv; unsigned long flags; unsigned char throttled; + dbg("Entering acm_rx_tasklet"); if (!ACM_READY(acm)) + { + dbg("acm_rx_tasklet: ACM not ready"); return; + } spin_lock_irqsave(&acm->throttle_lock, flags); throttled = acm->throttle; spin_unlock_irqrestore(&acm->throttle_lock, flags); if (throttled) + { + dbg("acm_rx_tasklet: throttled"); return; + } next_buffer: spin_lock_irqsave(&acm->read_lock, flags); @@ -403,6 +443,7 @@ urbs: while (!list_empty(&acm->spare_read_bufs)) { spin_lock_irqsave(&acm->read_lock, flags); if (list_empty(&acm->spare_read_urbs)) { + acm->processing = 0; spin_unlock_irqrestore(&acm->read_lock, flags); return; } @@ -425,18 +466,23 @@ urbs: rcv->urb->transfer_dma = buf->dma; rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; - dbg("acm_rx_tasklet: sending urb 0x%p, rcv 0x%p, buf 0x%p", rcv->urb, rcv, buf); - /* This shouldn't kill the driver as unsuccessful URBs are returned to the free-urbs-pool and resubmited ASAP */ - if (usb_submit_urb(rcv->urb, GFP_ATOMIC) < 0) { + spin_lock_irqsave(&acm->read_lock, flags); + if (acm->susp_count || usb_submit_urb(rcv->urb, GFP_ATOMIC) < 0) { list_add(&buf->list, &acm->spare_read_bufs); - spin_lock_irqsave(&acm->read_lock, flags); list_add(&rcv->list, &acm->spare_read_urbs); + acm->processing = 0; spin_unlock_irqrestore(&acm->read_lock, flags); return; + } else { + spin_unlock_irqrestore(&acm->read_lock, flags); + dbg("acm_rx_tasklet: sending urb 0x%p, rcv 0x%p, buf 0x%p", rcv->urb, rcv, buf); } } + spin_lock_irqsave(&acm->read_lock, flags); + acm->processing = 0; + spin_unlock_irqrestore(&acm->read_lock, flags); } /* data interface wrote those outgoing bytes */ @@ -463,6 +509,27 @@ static void acm_softint(struct work_struct *work) tty_wakeup(acm->tty); } +static void acm_waker(struct work_struct *waker) +{ + struct acm *acm = container_of(waker, struct acm, waker); + long flags; + int rv; + + rv = usb_autopm_get_interface(acm->control); + if (rv < 0) { + err("Autopm failure in %s", __func__); + return; + } + if (acm->delayed_wb) { + acm_start_wb(acm, acm->delayed_wb); + acm->delayed_wb = NULL; + } + spin_lock_irqsave(&acm->write_lock, flags); + acm->write_ready = acm->old_ready; + spin_unlock_irqrestore(&acm->write_lock, flags); + usb_autopm_put_interface(acm->control); +} + /* * TTY handlers */ @@ -492,6 +559,8 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp) if (usb_autopm_get_interface(acm->control) < 0) goto early_bail; + else + acm->control->needs_remote_wakeup = 1; mutex_lock(&acm->mutex); if (acm->used++) { @@ -509,6 +578,7 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp) if (0 > acm_set_control(acm, acm->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS) && (acm->ctrl_caps & USB_CDC_CAP_LINE)) goto full_bailout; + usb_autopm_put_interface(acm->control); INIT_LIST_HEAD(&acm->spare_read_urbs); INIT_LIST_HEAD(&acm->spare_read_bufs); @@ -570,12 +640,14 @@ static void acm_tty_close(struct tty_struct *tty, struct file *filp) mutex_lock(&open_mutex); if (!--acm->used) { if (acm->dev) { + usb_autopm_get_interface(acm->control); acm_set_control(acm, acm->ctrlout = 0); usb_kill_urb(acm->ctrlurb); for (i = 0; i < ACM_NW; i++) usb_kill_urb(acm->wb[i].urb); for (i = 0; i < nr; i++) usb_kill_urb(acm->ru[i].urb); + acm->control->needs_remote_wakeup = 0; usb_autopm_put_interface(acm->control); } else acm_tty_unregister(acm); @@ -766,7 +838,7 @@ static void acm_tty_set_termios(struct tty_struct *tty, struct ktermios *termios * USB probe and disconnect routines. */ -/* Little helper: write buffers free */ +/* Little helpers: write/read buffers free */ static void acm_write_buffers_free(struct acm *acm) { int i; @@ -777,6 +849,15 @@ static void acm_write_buffers_free(struct acm *acm) } } +static void acm_read_buffers_free(struct acm *acm) +{ + struct usb_device *usb_dev = interface_to_usbdev(acm->control); + int i, n = acm->rx_buflimit; + + for (i = 0; i < n; i++) + usb_buffer_free(usb_dev, acm->readsize, acm->rb[i].base, acm->rb[i].dma); +} + /* Little helper: write buffers allocate */ static int acm_write_buffers_alloc(struct acm *acm) { @@ -987,6 +1068,7 @@ skip_normal_probe: acm->urb_task.func = acm_rx_tasklet; acm->urb_task.data = (unsigned long) acm; INIT_WORK(&acm->work, acm_softint); + INIT_WORK(&acm->waker, acm_waker); spin_lock_init(&acm->throttle_lock); spin_lock_init(&acm->write_lock); spin_lock_init(&acm->read_lock); @@ -1098,8 +1180,7 @@ alloc_fail8: for (i = 0; i < ACM_NW; i++) usb_free_urb(acm->wb[i].urb); alloc_fail7: - for (i = 0; i < num_rx_buf; i++) - usb_buffer_free(usb_dev, acm->readsize, acm->rb[i].base, acm->rb[i].dma); + acm_read_buffers_free(acm); for (i = 0; i < num_rx_buf; i++) usb_free_urb(acm->ru[i].urb); usb_free_urb(acm->ctrlurb); @@ -1116,6 +1197,7 @@ alloc_fail: static void stop_data_traffic(struct acm *acm) { int i; + dbg("Entering stop_data_traffic"); tasklet_disable(&acm->urb_task); @@ -1128,21 +1210,16 @@ static void stop_data_traffic(struct acm *acm) tasklet_enable(&acm->urb_task); cancel_work_sync(&acm->work); + cancel_work_sync(&acm->waker); } static void acm_disconnect(struct usb_interface *intf) { struct acm *acm = usb_get_intfdata(intf); struct usb_device *usb_dev = interface_to_usbdev(intf); - int i; - - if (!acm || !acm->dev) { - dbg("disconnect on nonexisting interface"); - return; - } mutex_lock(&open_mutex); - if (!usb_get_intfdata(intf)) { + if (!acm || !acm->dev) { mutex_unlock(&open_mutex); return; } @@ -1161,10 +1238,10 @@ static void acm_disconnect(struct usb_interface *intf) acm_write_buffers_free(acm); usb_buffer_free(usb_dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); - for (i = 0; i < acm->rx_buflimit; i++) - usb_buffer_free(usb_dev, acm->readsize, acm->rb[i].base, acm->rb[i].dma); + acm_read_buffers_free(acm); - usb_driver_release_interface(&acm_driver, intf == acm->control ? acm->data : intf); + usb_driver_release_interface(&acm_driver, intf == acm->control ? + acm->data : acm->control); if (!acm->used) { acm_tty_unregister(acm); @@ -1178,11 +1255,31 @@ static void acm_disconnect(struct usb_interface *intf) tty_hangup(acm->tty); } +#ifdef CONFIG_PM static int acm_suspend(struct usb_interface *intf, pm_message_t message) { struct acm *acm = usb_get_intfdata(intf); + int cnt; + + if (acm->dev->auto_pm) { + int b; + + spin_lock_irq(&acm->read_lock); + spin_lock(&acm->write_lock); + b = acm->processing + acm->transmitting; + spin_unlock(&acm->write_lock); + spin_unlock_irq(&acm->read_lock); + if (b) + return -EBUSY; + } + + spin_lock_irq(&acm->read_lock); + spin_lock(&acm->write_lock); + cnt = acm->susp_count++; + spin_unlock(&acm->write_lock); + spin_unlock_irq(&acm->read_lock); - if (acm->susp_count++) + if (cnt) return 0; /* we treat opened interfaces differently, @@ -1201,15 +1298,21 @@ static int acm_resume(struct usb_interface *intf) { struct acm *acm = usb_get_intfdata(intf); int rv = 0; + int cnt; + + spin_lock_irq(&acm->read_lock); + acm->susp_count -= 1; + cnt = acm->susp_count; + spin_unlock_irq(&acm->read_lock); - if (--acm->susp_count) + if (cnt) return 0; mutex_lock(&acm->mutex); if (acm->used) { rv = usb_submit_urb(acm->ctrlurb, GFP_NOIO); if (rv < 0) - goto err_out; + goto err_out; tasklet_schedule(&acm->urb_task); } @@ -1218,6 +1321,8 @@ err_out: mutex_unlock(&acm->mutex); return rv; } + +#endif /* CONFIG_PM */ /* * USB driver structure. */ @@ -1273,10 +1378,14 @@ static struct usb_driver acm_driver = { .name = "cdc_acm", .probe = acm_probe, .disconnect = acm_disconnect, +#ifdef CONFIG_PM .suspend = acm_suspend, .resume = acm_resume, +#endif .id_table = acm_ids, +#ifdef CONFIG_PM .supports_autosuspend = 1, +#endif }; /* diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h index 046e064b033..85c3aaaab7c 100644 --- a/drivers/usb/class/cdc-acm.h +++ b/drivers/usb/class/cdc-acm.h @@ -107,10 +107,14 @@ struct acm { struct list_head filled_read_bufs; int write_used; /* number of non-empty write buffers */ int write_ready; /* write urb is not running */ + int old_ready; + int processing; + int transmitting; spinlock_t write_lock; struct mutex mutex; struct usb_cdc_line_coding line; /* bits, stop, parity */ struct work_struct work; /* work queue entry for line discipline waking up */ + struct work_struct waker; struct tasklet_struct urb_task; /* rx processing */ spinlock_t throttle_lock; /* synchronize throtteling and read callback */ unsigned int ctrlin; /* input control lines (DCD, DSR, RI, break, overruns) */ @@ -123,6 +127,7 @@ struct acm { unsigned char clocal; /* termios CLOCAL */ unsigned int ctrl_caps; /* control capabilities from the class specific header */ unsigned int susp_count; /* number of suspended interfaces */ + struct acm_wb *delayed_wb; /* write queued for a device about to be woken */ }; #define CDC_DATA_INTERFACE_TYPE 0x0a diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 731db051070..7e8e1235e4e 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -28,8 +28,9 @@ /* * Version Information */ -#define DRIVER_VERSION "v0.02" +#define DRIVER_VERSION "v0.03" #define DRIVER_AUTHOR "Oliver Neukum" +#define DRIVER_DESC "USB Abstract Control Model driver for USB WCM Device Management" static struct usb_device_id wdm_ids[] = { { @@ -87,6 +88,7 @@ struct wdm_device { dma_addr_t ihandle; struct mutex wlock; struct mutex rlock; + struct mutex plock; wait_queue_head_t wait; struct work_struct rxwork; int werr; @@ -205,7 +207,7 @@ static void wdm_int_callback(struct urb *urb) req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE; req->wValue = 0; req->wIndex = desc->inum; - req->wLength = cpu_to_le16(desc->bMaxPacketSize0); + req->wLength = cpu_to_le16(desc->wMaxCommand); usb_fill_control_urb( desc->response, @@ -214,7 +216,7 @@ static void wdm_int_callback(struct urb *urb) usb_rcvctrlpipe(interface_to_usbdev(desc->intf), 0), (unsigned char *)req, desc->inbuf, - desc->bMaxPacketSize0, + desc->wMaxCommand, wdm_in_callback, desc ); @@ -247,6 +249,7 @@ exit: static void kill_urbs(struct wdm_device *desc) { + /* the order here is essential */ usb_kill_urb(desc->command); usb_kill_urb(desc->validity); usb_kill_urb(desc->response); @@ -266,7 +269,7 @@ static void cleanup(struct wdm_device *desc) desc->sbuf, desc->validity->transfer_dma); usb_buffer_free(interface_to_usbdev(desc->intf), - desc->wMaxPacketSize, + desc->wMaxCommand, desc->inbuf, desc->response->transfer_dma); kfree(desc->orq); @@ -299,6 +302,9 @@ static ssize_t wdm_write if (r) goto outnl; + r = usb_autopm_get_interface(desc->intf); + if (r < 0) + goto outnp; r = wait_event_interruptible(desc->wait, !test_bit(WDM_IN_USE, &desc->flags)); if (r < 0) @@ -347,11 +353,14 @@ static ssize_t wdm_write if (rv < 0) { kfree(buf); clear_bit(WDM_IN_USE, &desc->flags); + err("Tx URB error: %d", rv); } else { dev_dbg(&desc->intf->dev, "Tx URB has been submitted index=%d", req->wIndex); } out: + usb_autopm_put_interface(desc->intf); +outnp: mutex_unlock(&desc->wlock); outnl: return rv < 0 ? rv : count; @@ -376,6 +385,11 @@ retry: rv = wait_event_interruptible(desc->wait, test_bit(WDM_READ, &desc->flags)); + if (test_bit(WDM_DISCONNECTING, &desc->flags)) { + rv = -ENODEV; + goto err; + } + usb_mark_last_busy(interface_to_usbdev(desc->intf)); if (rv < 0) { rv = -ERESTARTSYS; goto err; @@ -418,6 +432,9 @@ retry: desc->ubuf[i] = desc->ubuf[i + cntr]; desc->length -= cntr; + /* in case we had outstanding data */ + if (!desc->length) + clear_bit(WDM_READ, &desc->flags); rv = cntr; err: @@ -480,18 +497,28 @@ static int wdm_open(struct inode *inode, struct file *file) if (test_bit(WDM_DISCONNECTING, &desc->flags)) goto out; - desc->count++; + ; file->private_data = desc; - rv = usb_submit_urb(desc->validity, GFP_KERNEL); - + rv = usb_autopm_get_interface(desc->intf); if (rv < 0) { - desc->count--; - err("Error submitting int urb - %d", rv); + err("Error autopm - %d", rv); goto out; } - rv = 0; + intf->needs_remote_wakeup = 1; + mutex_lock(&desc->plock); + if (!desc->count++) { + rv = usb_submit_urb(desc->validity, GFP_KERNEL); + if (rv < 0) { + desc->count--; + err("Error submitting int urb - %d", rv); + } + } else { + rv = 0; + } + mutex_unlock(&desc->plock); + usb_autopm_put_interface(desc->intf); out: mutex_unlock(&wdm_mutex); return rv; @@ -502,10 +529,15 @@ static int wdm_release(struct inode *inode, struct file *file) struct wdm_device *desc = file->private_data; mutex_lock(&wdm_mutex); + mutex_lock(&desc->plock); desc->count--; + mutex_unlock(&desc->plock); + if (!desc->count) { dev_dbg(&desc->intf->dev, "wdm_release: cleanup"); kill_urbs(desc); + if (!test_bit(WDM_DISCONNECTING, &desc->flags)) + desc->intf->needs_remote_wakeup = 0; } mutex_unlock(&wdm_mutex); return 0; @@ -597,6 +629,7 @@ next_desc: goto out; mutex_init(&desc->wlock); mutex_init(&desc->rlock); + mutex_init(&desc->plock); spin_lock_init(&desc->iuspin); init_waitqueue_head(&desc->wait); desc->wMaxCommand = maxcom; @@ -698,6 +731,7 @@ static void wdm_disconnect(struct usb_interface *intf) spin_lock_irqsave(&desc->iuspin, flags); set_bit(WDM_DISCONNECTING, &desc->flags); set_bit(WDM_READ, &desc->flags); + /* to terminate pending flushes */ clear_bit(WDM_IN_USE, &desc->flags); spin_unlock_irqrestore(&desc->iuspin, flags); cancel_work_sync(&desc->rxwork); @@ -708,11 +742,81 @@ static void wdm_disconnect(struct usb_interface *intf) mutex_unlock(&wdm_mutex); } +static int wdm_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct wdm_device *desc = usb_get_intfdata(intf); + int rv = 0; + + dev_dbg(&desc->intf->dev, "wdm%d_suspend\n", intf->minor); + + mutex_lock(&desc->plock); +#ifdef CONFIG_PM + if (interface_to_usbdev(desc->intf)->auto_pm && test_bit(WDM_IN_USE, &desc->flags)) { + rv = -EBUSY; + } else { +#endif + cancel_work_sync(&desc->rxwork); + kill_urbs(desc); +#ifdef CONFIG_PM + } +#endif + mutex_unlock(&desc->plock); + + return rv; +} + +static int recover_from_urb_loss(struct wdm_device *desc) +{ + int rv = 0; + + if (desc->count) { + rv = usb_submit_urb(desc->validity, GFP_NOIO); + if (rv < 0) + err("Error resume submitting int urb - %d", rv); + } + return rv; +} +static int wdm_resume(struct usb_interface *intf) +{ + struct wdm_device *desc = usb_get_intfdata(intf); + int rv; + + dev_dbg(&desc->intf->dev, "wdm%d_resume\n", intf->minor); + mutex_lock(&desc->plock); + rv = recover_from_urb_loss(desc); + mutex_unlock(&desc->plock); + return rv; +} + +static int wdm_pre_reset(struct usb_interface *intf) +{ + struct wdm_device *desc = usb_get_intfdata(intf); + + mutex_lock(&desc->plock); + return 0; +} + +static int wdm_post_reset(struct usb_interface *intf) +{ + struct wdm_device *desc = usb_get_intfdata(intf); + int rv; + + rv = recover_from_urb_loss(desc); + mutex_unlock(&desc->plock); + return 0; +} + static struct usb_driver wdm_driver = { .name = "cdc_wdm", .probe = wdm_probe, .disconnect = wdm_disconnect, + .suspend = wdm_suspend, + .resume = wdm_resume, + .reset_resume = wdm_resume, + .pre_reset = wdm_pre_reset, + .post_reset = wdm_post_reset, .id_table = wdm_ids, + .supports_autosuspend = 1, }; /* --- low level module stuff --- */ @@ -735,6 +839,5 @@ module_init(wdm_init); module_exit(wdm_exit); MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION("USB Abstract Control Model driver for " - "USB WCM Device Management"); +MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c index 83d9dc379d9..6ec38175a81 100644 --- a/drivers/usb/core/devices.c +++ b/drivers/usb/core/devices.c @@ -46,8 +46,6 @@ * 2000-07-05: Ashley Montanaro <ashley@compsoc.man.ac.uk> * Converted file reading routine to dump to buffer once * per device, not per bus - * - * $Id: devices.c,v 1.5 2000/01/11 13:58:21 tom Exp $ */ #include <linux/fs.h> @@ -63,8 +61,6 @@ #include "usb.h" #include "hcd.h" -#define MAX_TOPO_LEVEL 6 - /* Define ALLOW_SERIAL_NUMBER if you want to see the serial number of devices */ #define ALLOW_SERIAL_NUMBER diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index 9218cca2104..54a350ccd03 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -19,8 +19,6 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * - * $Id: devio.c,v 1.7 2000/02/01 17:28:48 fliegl Exp $ - * * This file implements the usbfs/x/y files, where * x is the bus number and y the device number. * @@ -61,6 +59,22 @@ /* Mutual exclusion for removal, open, and release */ DEFINE_MUTEX(usbfs_mutex); +struct dev_state { + struct list_head list; /* state list */ + struct usb_device *dev; + struct file *file; + spinlock_t lock; /* protects the async urb lists */ + struct list_head async_pending; + struct list_head async_completed; + wait_queue_head_t wait; /* wake up if a request completed */ + unsigned int discsignr; + struct pid *disc_pid; + uid_t disc_uid, disc_euid; + void __user *disccontext; + unsigned long ifclaimed; + u32 secid; +}; + struct async { struct list_head asynclist; struct dev_state *ps; @@ -536,23 +550,19 @@ static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype, return ret; } -static int __match_minor(struct device *dev, void *data) +static int match_devt(struct device *dev, void *data) { - int minor = *((int *)data); - - if (dev->devt == MKDEV(USB_DEVICE_MAJOR, minor)) - return 1; - return 0; + return dev->devt == (dev_t) (unsigned long) data; } -static struct usb_device *usbdev_lookup_by_minor(int minor) +static struct usb_device *usbdev_lookup_by_devt(dev_t devt) { struct device *dev; - dev = bus_find_device(&usb_bus_type, NULL, &minor, __match_minor); + dev = bus_find_device(&usb_bus_type, NULL, + (void *) (unsigned long) devt, match_devt); if (!dev) return NULL; - put_device(dev); return container_of(dev, struct usb_device, dev); } @@ -575,21 +585,27 @@ static int usbdev_open(struct inode *inode, struct file *file) goto out; ret = -ENOENT; + /* usbdev device-node */ if (imajor(inode) == USB_DEVICE_MAJOR) - dev = usbdev_lookup_by_minor(iminor(inode)); + dev = usbdev_lookup_by_devt(inode->i_rdev); #ifdef CONFIG_USB_DEVICEFS /* procfs file */ - if (!dev) + if (!dev) { dev = inode->i_private; + if (dev && dev->usbfs_dentry && + dev->usbfs_dentry->d_inode == inode) + usb_get_dev(dev); + else + dev = NULL; + } #endif - if (!dev) + if (!dev || dev->state == USB_STATE_NOTATTACHED) goto out; ret = usb_autoresume_device(dev); if (ret) goto out; - usb_get_dev(dev); ret = 0; ps->dev = dev; ps->file = file; @@ -609,8 +625,10 @@ static int usbdev_open(struct inode *inode, struct file *file) list_add_tail(&ps->list, &dev->filelist); file->private_data = ps; out: - if (ret) + if (ret) { kfree(ps); + usb_put_dev(dev); + } mutex_unlock(&usbfs_mutex); unlock_kernel(); return ret; @@ -874,7 +892,7 @@ static int proc_connectinfo(struct dev_state *ps, void __user *arg) static int proc_resetdevice(struct dev_state *ps) { - return usb_reset_composite_device(ps->dev, NULL); + return usb_reset_device(ps->dev); } static int proc_setintf(struct dev_state *ps, void __user *arg) @@ -1682,25 +1700,49 @@ const struct file_operations usbdev_file_operations = { .release = usbdev_release, }; +void usb_fs_classdev_common_remove(struct usb_device *udev) +{ + struct dev_state *ps; + struct siginfo sinfo; + + while (!list_empty(&udev->filelist)) { + ps = list_entry(udev->filelist.next, struct dev_state, list); + destroy_all_async(ps); + wake_up_all(&ps->wait); + list_del_init(&ps->list); + if (ps->discsignr) { + sinfo.si_signo = ps->discsignr; + sinfo.si_errno = EPIPE; + sinfo.si_code = SI_ASYNCIO; + sinfo.si_addr = ps->disccontext; + kill_pid_info_as_uid(ps->discsignr, &sinfo, + ps->disc_pid, ps->disc_uid, + ps->disc_euid, ps->secid); + } + } +} + #ifdef CONFIG_USB_DEVICE_CLASS static struct class *usb_classdev_class; static int usb_classdev_add(struct usb_device *dev) { - int minor = ((dev->bus->busnum-1) * 128) + (dev->devnum-1); - - dev->usb_classdev = device_create(usb_classdev_class, &dev->dev, - MKDEV(USB_DEVICE_MAJOR, minor), - "usbdev%d.%d", dev->bus->busnum, dev->devnum); - if (IS_ERR(dev->usb_classdev)) - return PTR_ERR(dev->usb_classdev); - + struct device *cldev; + + cldev = device_create(usb_classdev_class, &dev->dev, dev->dev.devt, + "usbdev%d.%d", dev->bus->busnum, + dev->devnum); + if (IS_ERR(cldev)) + return PTR_ERR(cldev); + dev->usb_classdev = cldev; return 0; } static void usb_classdev_remove(struct usb_device *dev) { - device_unregister(dev->usb_classdev); + if (dev->usb_classdev) + device_unregister(dev->usb_classdev); + usb_fs_classdev_common_remove(dev); } static int usb_classdev_notify(struct notifier_block *self, diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 1e56f1cfa6d..ddb54e14a5c 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -201,6 +201,7 @@ static int usb_probe_interface(struct device *dev) intf = to_usb_interface(dev); udev = interface_to_usbdev(intf); + intf->needs_binding = 0; if (udev->authorized == 0) { dev_err(&intf->dev, "Device is not authorized for usage\n"); @@ -257,15 +258,16 @@ static int usb_unbind_interface(struct device *dev) udev = interface_to_usbdev(intf); error = usb_autoresume_device(udev); - /* release all urbs for this interface */ - usb_disable_interface(interface_to_usbdev(intf), intf); + /* Terminate all URBs for this interface unless the driver + * supports "soft" unbinding. + */ + if (!driver->soft_unbind) + usb_disable_interface(udev, intf); driver->disconnect(intf); /* reset other interface state */ - usb_set_interface(interface_to_usbdev(intf), - intf->altsetting[0].desc.bInterfaceNumber, - 0); + usb_set_interface(udev, intf->altsetting[0].desc.bInterfaceNumber, 0); usb_set_intfdata(intf, NULL); intf->condition = USB_INTERFACE_UNBOUND; @@ -310,6 +312,7 @@ int usb_driver_claim_interface(struct usb_driver *driver, dev->driver = &driver->drvwrap.driver; usb_set_intfdata(iface, priv); + iface->needs_binding = 0; usb_pm_lock(udev); iface->condition = USB_INTERFACE_BOUND; @@ -586,7 +589,7 @@ static int usb_uevent(struct device *dev, struct kobj_uevent_env *env) struct usb_device *usb_dev; /* driver is often null here; dev_dbg() would oops */ - pr_debug("usb %s: uevent\n", dev->bus_id); + pr_debug("usb %s: uevent\n", dev_name(dev)); if (is_usb_device(dev)) usb_dev = to_usb_device(dev); @@ -596,11 +599,11 @@ static int usb_uevent(struct device *dev, struct kobj_uevent_env *env) } if (usb_dev->devnum < 0) { - pr_debug("usb %s: already deleted?\n", dev->bus_id); + pr_debug("usb %s: already deleted?\n", dev_name(dev)); return -ENODEV; } if (!usb_dev->bus) { - pr_debug("usb %s: bus removed?\n", dev->bus_id); + pr_debug("usb %s: bus removed?\n", dev_name(dev)); return -ENODEV; } @@ -771,6 +774,104 @@ void usb_deregister(struct usb_driver *driver) } EXPORT_SYMBOL_GPL(usb_deregister); + +/* Forced unbinding of a USB interface driver, either because + * it doesn't support pre_reset/post_reset/reset_resume or + * because it doesn't support suspend/resume. + * + * The caller must hold @intf's device's lock, but not its pm_mutex + * and not @intf->dev.sem. + */ +void usb_forced_unbind_intf(struct usb_interface *intf) +{ + struct usb_driver *driver = to_usb_driver(intf->dev.driver); + + dev_dbg(&intf->dev, "forced unbind\n"); + usb_driver_release_interface(driver, intf); + + /* Mark the interface for later rebinding */ + intf->needs_binding = 1; +} + +/* Delayed forced unbinding of a USB interface driver and scan + * for rebinding. + * + * The caller must hold @intf's device's lock, but not its pm_mutex + * and not @intf->dev.sem. + * + * FIXME: The caller must block system sleep transitions. + */ +void usb_rebind_intf(struct usb_interface *intf) +{ + int rc; + + /* Delayed unbind of an existing driver */ + if (intf->dev.driver) { + struct usb_driver *driver = + to_usb_driver(intf->dev.driver); + + dev_dbg(&intf->dev, "forced unbind\n"); + usb_driver_release_interface(driver, intf); + } + + /* Try to rebind the interface */ + intf->needs_binding = 0; + rc = device_attach(&intf->dev); + if (rc < 0) + dev_warn(&intf->dev, "rebind failed: %d\n", rc); +} + +#define DO_UNBIND 0 +#define DO_REBIND 1 + +/* Unbind drivers for @udev's interfaces that don't support suspend/resume, + * or rebind interfaces that have been unbound, according to @action. + * + * The caller must hold @udev's device lock. + * FIXME: For rebinds, the caller must block system sleep transitions. + */ +static void do_unbind_rebind(struct usb_device *udev, int action) +{ + struct usb_host_config *config; + int i; + struct usb_interface *intf; + struct usb_driver *drv; + + config = udev->actconfig; + if (config) { + for (i = 0; i < config->desc.bNumInterfaces; ++i) { + intf = config->interface[i]; + switch (action) { + case DO_UNBIND: + if (intf->dev.driver) { + drv = to_usb_driver(intf->dev.driver); + if (!drv->suspend || !drv->resume) + usb_forced_unbind_intf(intf); + } + break; + case DO_REBIND: + if (intf->needs_binding) { + + /* FIXME: The next line is needed because we are going to probe + * the interface, but as far as the PM core is concerned the + * interface is still suspended. The problem wouldn't exist + * if we could rebind the interface during the interface's own + * resume() call, but at the time the usb_device isn't locked! + * + * The real solution will be to carry this out during the device's + * complete() callback. Until that is implemented, we have to + * use this hack. + */ +// intf->dev.power.sleeping = 0; + + usb_rebind_intf(intf); + } + break; + } + } + } +} + #ifdef CONFIG_PM /* Caller has locked udev's pm_mutex */ @@ -805,8 +906,6 @@ static int usb_resume_device(struct usb_device *udev) if (udev->state == USB_STATE_NOTATTACHED) goto done; - if (udev->state != USB_STATE_SUSPENDED && !udev->reset_resume) - goto done; /* Can't resume it if it doesn't have a driver. */ if (udev->dev.driver == NULL) { @@ -842,7 +941,7 @@ static int usb_suspend_interface(struct usb_interface *intf, pm_message_t msg) goto done; driver = to_usb_driver(intf->dev.driver); - if (driver->suspend && driver->resume) { + if (driver->suspend) { status = driver->suspend(intf, msg); if (status == 0) mark_quiesced(intf); @@ -850,12 +949,10 @@ static int usb_suspend_interface(struct usb_interface *intf, pm_message_t msg) dev_err(&intf->dev, "%s error %d\n", "suspend", status); } else { - /* - * FIXME else if there's no suspend method, disconnect... - * Not possible if auto_pm is set... - */ - dev_warn(&intf->dev, "no suspend for driver %s?\n", - driver->name); + /* Later we will unbind the driver and reprobe */ + intf->needs_binding = 1; + dev_warn(&intf->dev, "no %s for driver %s?\n", + "suspend", driver->name); mark_quiesced(intf); } @@ -879,10 +976,12 @@ static int usb_resume_interface(struct usb_interface *intf, int reset_resume) goto done; /* Can't resume it if it doesn't have a driver. */ - if (intf->condition == USB_INTERFACE_UNBOUND) { - status = -ENOTCONN; + if (intf->condition == USB_INTERFACE_UNBOUND) + goto done; + + /* Don't resume if the interface is marked for rebinding */ + if (intf->needs_binding) goto done; - } driver = to_usb_driver(intf->dev.driver); if (reset_resume) { @@ -892,7 +991,7 @@ static int usb_resume_interface(struct usb_interface *intf, int reset_resume) dev_err(&intf->dev, "%s error %d\n", "reset_resume", status); } else { - /* status = -EOPNOTSUPP; */ + intf->needs_binding = 1; dev_warn(&intf->dev, "no %s for driver %s?\n", "reset_resume", driver->name); } @@ -903,7 +1002,7 @@ static int usb_resume_interface(struct usb_interface *intf, int reset_resume) dev_err(&intf->dev, "%s error %d\n", "resume", status); } else { - /* status = -EOPNOTSUPP; */ + intf->needs_binding = 1; dev_warn(&intf->dev, "no %s for driver %s?\n", "resume", driver->name); } @@ -911,11 +1010,10 @@ static int usb_resume_interface(struct usb_interface *intf, int reset_resume) done: dev_vdbg(&intf->dev, "%s: status %d\n", __func__, status); - if (status == 0) + if (status == 0 && intf->condition == USB_INTERFACE_BOUND) mark_active(intf); - /* FIXME: Unbind the driver and reprobe if the resume failed - * (not possible if auto_pm is set) */ + /* Later we will unbind the driver and/or reprobe, if necessary */ return status; } @@ -1173,11 +1271,8 @@ static int usb_resume_both(struct usb_device *udev) * then we're stuck. */ status = usb_resume_device(udev); } - } else { - - /* Needed for reset-resume */ + } else if (udev->reset_resume) status = usb_resume_device(udev); - } if (status == 0 && udev->actconfig) { for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) { @@ -1474,6 +1569,7 @@ int usb_external_suspend_device(struct usb_device *udev, pm_message_t msg) { int status; + do_unbind_rebind(udev, DO_UNBIND); usb_pm_lock(udev); udev->auto_pm = 0; status = usb_suspend_both(udev, msg); @@ -1501,6 +1597,7 @@ int usb_external_resume_device(struct usb_device *udev) status = usb_resume_both(udev); udev->last_busy = jiffies; usb_pm_unlock(udev); + do_unbind_rebind(udev, DO_REBIND); /* Now that the device is awake, we can start trying to autosuspend * it again. */ @@ -1542,14 +1639,11 @@ static int usb_resume(struct device *dev) udev = to_usb_device(dev); /* If udev->skip_sys_resume is set then udev was already suspended - * when the system suspend started, so we don't want to resume - * udev during this system wakeup. However a reset-resume counts - * as a wakeup event, so allow a reset-resume to occur if remote - * wakeup is enabled. */ - if (udev->skip_sys_resume) { - if (!(udev->reset_resume && udev->do_remote_wakeup)) - return -EHOSTUNREACH; - } + * when the system sleep started, so we don't want to resume it + * during this system wakeup. + */ + if (udev->skip_sys_resume) + return 0; return usb_external_resume_device(udev); } diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c index fae55a31e26..22912136fc1 100644 --- a/drivers/usb/core/endpoint.c +++ b/drivers/usb/core/endpoint.c @@ -296,7 +296,7 @@ int usb_create_ep_files(struct device *parent, retval = endpoint_get_minor(ep_dev); if (retval) { dev_err(parent, "can not allocate minor number for %s\n", - ep_dev->dev.bus_id); + dev_name(&ep_dev->dev)); goto error_register; } @@ -307,7 +307,7 @@ int usb_create_ep_files(struct device *parent, ep_dev->dev.class = ep_class->class; ep_dev->dev.parent = parent; ep_dev->dev.release = ep_device_release; - snprintf(ep_dev->dev.bus_id, BUS_ID_SIZE, "usbdev%d.%d_ep%02x", + dev_set_name(&ep_dev->dev, "usbdev%d.%d_ep%02x", udev->bus->busnum, udev->devnum, endpoint->desc.bEndpointAddress); diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c index c6a95395e52..913fb866789 100644 --- a/drivers/usb/core/file.c +++ b/drivers/usb/core/file.c @@ -150,7 +150,7 @@ int usb_register_dev(struct usb_interface *intf, int retval = -EINVAL; int minor_base = class_driver->minor_base; int minor = 0; - char name[BUS_ID_SIZE]; + char name[20]; char *temp; #ifdef CONFIG_USB_DYNAMIC_MINORS @@ -190,9 +190,9 @@ int usb_register_dev(struct usb_interface *intf, intf->minor = minor; /* create a usb class device for this usb interface */ - snprintf(name, BUS_ID_SIZE, class_driver->name, minor - minor_base); + snprintf(name, sizeof(name), class_driver->name, minor - minor_base); temp = strrchr(name, '/'); - if (temp && (temp[1] != 0x00)) + if (temp && (temp[1] != '\0')) ++temp; else temp = name; @@ -227,7 +227,7 @@ void usb_deregister_dev(struct usb_interface *intf, struct usb_class_driver *class_driver) { int minor_base = class_driver->minor_base; - char name[BUS_ID_SIZE]; + char name[20]; #ifdef CONFIG_USB_DYNAMIC_MINORS minor_base = 0; @@ -242,7 +242,7 @@ void usb_deregister_dev(struct usb_interface *intf, usb_minors[intf->minor] = NULL; up_write(&minor_rwsem); - snprintf(name, BUS_ID_SIZE, class_driver->name, intf->minor - minor_base); + snprintf(name, sizeof(name), class_driver->name, intf->minor - minor_base); device_destroy(usb_class->class, MKDEV(USB_MAJOR, intf->minor)); intf->usb_dev = NULL; intf->minor = -1; diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 42a436478b7..f7bfd72ef11 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -900,14 +900,14 @@ static int register_root_hub(struct usb_hcd *hcd) if (retval != sizeof usb_dev->descriptor) { mutex_unlock(&usb_bus_list_lock); dev_dbg (parent_dev, "can't read %s device descriptor %d\n", - usb_dev->dev.bus_id, retval); + dev_name(&usb_dev->dev), retval); return (retval < 0) ? retval : -EMSGSIZE; } retval = usb_new_device (usb_dev); if (retval) { dev_err (parent_dev, "can't register root hub for %s, %d\n", - usb_dev->dev.bus_id, retval); + dev_name(&usb_dev->dev), retval); } mutex_unlock(&usb_bus_list_lock); @@ -1764,7 +1764,7 @@ EXPORT_SYMBOL_GPL (usb_hc_died); * If memory is unavailable, returns NULL. */ struct usb_hcd *usb_create_hcd (const struct hc_driver *driver, - struct device *dev, char *bus_name) + struct device *dev, const char *bus_name) { struct usb_hcd *hcd; diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h index b9de1569b39..5b0b59b0d89 100644 --- a/drivers/usb/core/hcd.h +++ b/drivers/usb/core/hcd.h @@ -21,6 +21,8 @@ #include <linux/rwsem.h> +#define MAX_TOPO_LEVEL 6 + /* This file contains declarations of usbcore internals that are mostly * used or exposed by Host Controller Drivers. */ @@ -235,7 +237,7 @@ extern void usb_hcd_disable_endpoint(struct usb_device *udev, extern int usb_hcd_get_frame_number(struct usb_device *udev); extern struct usb_hcd *usb_create_hcd(const struct hc_driver *driver, - struct device *dev, char *bus_name); + struct device *dev, const char *bus_name); extern struct usb_hcd *usb_get_hcd(struct usb_hcd *hcd); extern void usb_put_hcd(struct usb_hcd *hcd); extern int usb_add_hcd(struct usb_hcd *hcd, diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 4cfe32a16c3..107e1d25dde 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -72,7 +72,6 @@ struct usb_hub { unsigned limited_power:1; unsigned quiescing:1; - unsigned activating:1; unsigned disconnected:1; unsigned has_indicators:1; @@ -131,6 +130,12 @@ MODULE_PARM_DESC(use_both_schemes, DECLARE_RWSEM(ehci_cf_port_reset_rwsem); EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem); +#define HUB_DEBOUNCE_TIMEOUT 1500 +#define HUB_DEBOUNCE_STEP 25 +#define HUB_DEBOUNCE_STABLE 100 + + +static int usb_reset_and_verify_device(struct usb_device *udev); static inline char *portspeed(int portstatus) { @@ -535,37 +540,6 @@ static void hub_power_on(struct usb_hub *hub) msleep(max(pgood_delay, (unsigned) 100)); } -static void hub_quiesce(struct usb_hub *hub) -{ - /* (nonblocking) khubd and related activity won't re-trigger */ - hub->quiescing = 1; - hub->activating = 0; - - /* (blocking) stop khubd and related activity */ - usb_kill_urb(hub->urb); - if (hub->has_indicators) - cancel_delayed_work_sync(&hub->leds); - if (hub->tt.hub) - cancel_work_sync(&hub->tt.kevent); -} - -static void hub_activate(struct usb_hub *hub) -{ - int status; - - hub->quiescing = 0; - hub->activating = 1; - - status = usb_submit_urb(hub->urb, GFP_NOIO); - if (status < 0) - dev_err(hub->intfdev, "activate --> %d\n", status); - if (hub->has_indicators && blinkenlights) - schedule_delayed_work(&hub->leds, LED_CYCLE_PERIOD); - - /* scan all ports ASAP */ - kick_khubd(hub); -} - static int hub_hub_status(struct usb_hub *hub, u16 *status, u16 *change) { @@ -624,136 +598,149 @@ static void hub_port_logical_disconnect(struct usb_hub *hub, int port1) kick_khubd(hub); } -/* caller has locked the hub device */ -static void hub_stop(struct usb_hub *hub) +enum hub_activation_type { + HUB_INIT, HUB_POST_RESET, HUB_RESUME, HUB_RESET_RESUME +}; + +static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) { struct usb_device *hdev = hub->hdev; - int i; + int port1; + int status; + bool need_debounce_delay = false; - /* Disconnect all the children */ - for (i = 0; i < hdev->maxchild; ++i) { - if (hdev->children[i]) - usb_disconnect(&hdev->children[i]); - } - hub_quiesce(hub); -} + /* After a resume, port power should still be on. + * For any other type of activation, turn it on. + */ + if (type != HUB_RESUME) + hub_power_on(hub); -#define HUB_RESET 1 -#define HUB_RESUME 2 -#define HUB_RESET_RESUME 3 + /* Check each port and set hub->change_bits to let khubd know + * which ports need attention. + */ + for (port1 = 1; port1 <= hdev->maxchild; ++port1) { + struct usb_device *udev = hdev->children[port1-1]; + u16 portstatus, portchange; -#ifdef CONFIG_PM + portstatus = portchange = 0; + status = hub_port_status(hub, port1, &portstatus, &portchange); + if (udev || (portstatus & USB_PORT_STAT_CONNECTION)) + dev_dbg(hub->intfdev, + "port %d: status %04x change %04x\n", + port1, portstatus, portchange); -/* Try to identify which devices need USB-PERSIST handling */ -static int persistent_device(struct usb_device *udev) -{ - int i; - int retval; - struct usb_host_config *actconfig; + /* After anything other than HUB_RESUME (i.e., initialization + * or any sort of reset), every port should be disabled. + * Unconnected ports should likewise be disabled (paranoia), + * and so should ports for which we have no usb_device. + */ + if ((portstatus & USB_PORT_STAT_ENABLE) && ( + type != HUB_RESUME || + !(portstatus & USB_PORT_STAT_CONNECTION) || + !udev || + udev->state == USB_STATE_NOTATTACHED)) { + clear_port_feature(hdev, port1, USB_PORT_FEAT_ENABLE); + portstatus &= ~USB_PORT_STAT_ENABLE; + } - /* Explicitly not marked persistent? */ - if (!udev->persist_enabled) - return 0; + /* Clear status-change flags; we'll debounce later */ + if (portchange & USB_PORT_STAT_C_CONNECTION) { + need_debounce_delay = true; + clear_port_feature(hub->hdev, port1, + USB_PORT_FEAT_C_CONNECTION); + } + if (portchange & USB_PORT_STAT_C_ENABLE) { + need_debounce_delay = true; + clear_port_feature(hub->hdev, port1, + USB_PORT_FEAT_C_ENABLE); + } - /* No active config? */ - actconfig = udev->actconfig; - if (!actconfig) - return 0; + if (!udev || udev->state == USB_STATE_NOTATTACHED) { + /* Tell khubd to disconnect the device or + * check for a new connection + */ + if (udev || (portstatus & USB_PORT_STAT_CONNECTION)) + set_bit(port1, hub->change_bits); + + } else if (portstatus & USB_PORT_STAT_ENABLE) { + /* The power session apparently survived the resume. + * If there was an overcurrent or suspend change + * (i.e., remote wakeup request), have khubd + * take care of it. + */ + if (portchange) + set_bit(port1, hub->change_bits); - /* FIXME! We should check whether it's open here or not! */ + } else if (udev->persist_enabled) { +#ifdef CONFIG_PM + udev->reset_resume = 1; +#endif + set_bit(port1, hub->change_bits); - /* - * Check that all the interface drivers have a - * 'reset_resume' entrypoint + } else { + /* The power session is gone; tell khubd */ + usb_set_device_state(udev, USB_STATE_NOTATTACHED); + set_bit(port1, hub->change_bits); + } + } + + /* If no port-status-change flags were set, we don't need any + * debouncing. If flags were set we can try to debounce the + * ports all at once right now, instead of letting khubd do them + * one at a time later on. + * + * If any port-status changes do occur during this delay, khubd + * will see them later and handle them normally. */ - retval = 0; - for (i = 0; i < actconfig->desc.bNumInterfaces; i++) { - struct usb_interface *intf; - struct usb_driver *driver; + if (need_debounce_delay) + msleep(HUB_DEBOUNCE_STABLE); - intf = actconfig->interface[i]; - if (!intf->dev.driver) - continue; - driver = to_usb_driver(intf->dev.driver); - if (!driver->reset_resume) - return 0; - /* - * We have at least one driver, and that one - * has a reset_resume method. - */ - retval = 1; - } - return retval; -} + hub->quiescing = 0; -static void hub_restart(struct usb_hub *hub, int type) -{ - struct usb_device *hdev = hub->hdev; - int port1; + status = usb_submit_urb(hub->urb, GFP_NOIO); + if (status < 0) + dev_err(hub->intfdev, "activate --> %d\n", status); + if (hub->has_indicators && blinkenlights) + schedule_delayed_work(&hub->leds, LED_CYCLE_PERIOD); - /* Check each of the children to see if they require - * USB-PERSIST handling or disconnection. Also check - * each unoccupied port to make sure it is still disabled. - */ - for (port1 = 1; port1 <= hdev->maxchild; ++port1) { - struct usb_device *udev = hdev->children[port1-1]; - int status = 0; - u16 portstatus, portchange; + /* Scan all ports that need attention */ + kick_khubd(hub); +} - if (!udev || udev->state == USB_STATE_NOTATTACHED) { - if (type != HUB_RESET) { - status = hub_port_status(hub, port1, - &portstatus, &portchange); - if (status == 0 && (portstatus & - USB_PORT_STAT_ENABLE)) - clear_port_feature(hdev, port1, - USB_PORT_FEAT_ENABLE); - } - continue; - } +enum hub_quiescing_type { + HUB_DISCONNECT, HUB_PRE_RESET, HUB_SUSPEND +}; - /* Was the power session lost while we were suspended? */ - status = hub_port_status(hub, port1, &portstatus, &portchange); +static void hub_quiesce(struct usb_hub *hub, enum hub_quiescing_type type) +{ + struct usb_device *hdev = hub->hdev; + int i; - /* If the device is gone, khubd will handle it later */ - if (status == 0 && !(portstatus & USB_PORT_STAT_CONNECTION)) - continue; + /* khubd and related activity won't re-trigger */ + hub->quiescing = 1; - /* For "USB_PERSIST"-enabled children we must - * mark the child device for reset-resume and - * turn off the various status changes to prevent - * khubd from disconnecting it later. - */ - if (status == 0 && !(portstatus & USB_PORT_STAT_ENABLE) && - persistent_device(udev)) { - if (portchange & USB_PORT_STAT_C_ENABLE) - clear_port_feature(hub->hdev, port1, - USB_PORT_FEAT_C_ENABLE); - if (portchange & USB_PORT_STAT_C_CONNECTION) - clear_port_feature(hub->hdev, port1, - USB_PORT_FEAT_C_CONNECTION); - udev->reset_resume = 1; + if (type != HUB_SUSPEND) { + /* Disconnect all the children */ + for (i = 0; i < hdev->maxchild; ++i) { + if (hdev->children[i]) + usb_disconnect(&hdev->children[i]); } - - /* Otherwise for a reset_resume we must disconnect the child, - * but as we may not lock the child device here - * we have to do a "logical" disconnect. - */ - else if (type == HUB_RESET_RESUME) - hub_port_logical_disconnect(hub, port1); } - hub_activate(hub); + /* Stop khubd and related activity */ + usb_kill_urb(hub->urb); + if (hub->has_indicators) + cancel_delayed_work_sync(&hub->leds); + if (hub->tt.hub) + cancel_work_sync(&hub->tt.kevent); } -#endif /* CONFIG_PM */ - /* caller has locked the hub device */ static int hub_pre_reset(struct usb_interface *intf) { struct usb_hub *hub = usb_get_intfdata(intf); - hub_stop(hub); + hub_quiesce(hub, HUB_PRE_RESET); return 0; } @@ -762,8 +749,7 @@ static int hub_post_reset(struct usb_interface *intf) { struct usb_hub *hub = usb_get_intfdata(intf); - hub_power_on(hub); - hub_activate(hub); + hub_activate(hub, HUB_POST_RESET); return 0; } @@ -1009,8 +995,7 @@ static int hub_configure(struct usb_hub *hub, if (hub->has_indicators && blinkenlights) hub->indicator [0] = INDICATOR_CYCLE; - hub_power_on(hub); - hub_activate(hub); + hub_activate(hub, HUB_INIT); return 0; fail: @@ -1042,7 +1027,7 @@ static void hub_disconnect(struct usb_interface *intf) /* Disconnect all children and quiesce the hub */ hub->error = 0; - hub_stop(hub); + hub_quiesce(hub, HUB_DISCONNECT); usb_set_intfdata (intf, NULL); @@ -1068,6 +1053,12 @@ static int hub_probe(struct usb_interface *intf, const struct usb_device_id *id) desc = intf->cur_altsetting; hdev = interface_to_usbdev(intf); + if (hdev->level == MAX_TOPO_LEVEL) { + dev_err(&intf->dev, "Unsupported bus topology: " + "hub nested too deep\n"); + return -E2BIG; + } + #ifdef CONFIG_USB_OTG_BLACKLIST_HUB if (hdev->parent) { dev_warn(&intf->dev, "ignoring external hub\n"); @@ -1814,6 +1805,51 @@ static int hub_port_reset(struct usb_hub *hub, int port1, #ifdef CONFIG_PM +#define MASK_BITS (USB_PORT_STAT_POWER | USB_PORT_STAT_CONNECTION | \ + USB_PORT_STAT_SUSPEND) +#define WANT_BITS (USB_PORT_STAT_POWER | USB_PORT_STAT_CONNECTION) + +/* Determine whether the device on a port is ready for a normal resume, + * is ready for a reset-resume, or should be disconnected. + */ +static int check_port_resume_type(struct usb_device *udev, + struct usb_hub *hub, int port1, + int status, unsigned portchange, unsigned portstatus) +{ + /* Is the device still present? */ + if (status || (portstatus & MASK_BITS) != WANT_BITS) { + if (status >= 0) + status = -ENODEV; + } + + /* Can't do a normal resume if the port isn't enabled, + * so try a reset-resume instead. + */ + else if (!(portstatus & USB_PORT_STAT_ENABLE) && !udev->reset_resume) { + if (udev->persist_enabled) + udev->reset_resume = 1; + else + status = -ENODEV; + } + + if (status) { + dev_dbg(hub->intfdev, + "port %d status %04x.%04x after resume, %d\n", + port1, portchange, portstatus, status); + } else if (udev->reset_resume) { + + /* Late port handoff can set status-change bits */ + if (portchange & USB_PORT_STAT_C_CONNECTION) + clear_port_feature(hub->hdev, port1, + USB_PORT_FEAT_C_CONNECTION); + if (portchange & USB_PORT_STAT_C_ENABLE) + clear_port_feature(hub->hdev, port1, + USB_PORT_FEAT_C_ENABLE); + } + + return status; +} + #ifdef CONFIG_USB_SUSPEND /* @@ -1943,7 +1979,8 @@ static int finish_port_resume(struct usb_device *udev) * resumed. */ if (udev->reset_resume) - status = usb_reset_device(udev); + retry_reset_resume: + status = usb_reset_and_verify_device(udev); /* 10.5.4.5 says be sure devices in the tree are still there. * For now let's assume the device didn't go crazy on resume, @@ -1954,6 +1991,13 @@ static int finish_port_resume(struct usb_device *udev) status = usb_get_status(udev, USB_RECIP_DEVICE, 0, &devstatus); if (status >= 0) status = (status > 0 ? 0 : -ENODEV); + + /* If a normal resume failed, try doing a reset-resume */ + if (status && !udev->reset_resume && udev->persist_enabled) { + dev_dbg(&udev->dev, "retry with reset-resume\n"); + udev->reset_resume = 1; + goto retry_reset_resume; + } } if (status) { @@ -2002,7 +2046,7 @@ static int finish_port_resume(struct usb_device *udev) * to it will be lost. Using the USB_PERSIST facility, the device can be * made to appear as if it had not disconnected. * - * This facility can be dangerous. Although usb_reset_device() makes + * This facility can be dangerous. Although usb_reset_and_verify_device() makes * every effort to insure that the same device is present after the * reset as before, it cannot provide a 100% guarantee. Furthermore it's * quite possible for a device to remain unaltered but its media to be @@ -2018,7 +2062,6 @@ int usb_port_resume(struct usb_device *udev) int port1 = udev->portnum; int status; u16 portchange, portstatus; - unsigned mask_flags, want_flags; /* Skip the initial Clear-Suspend step for a remote wakeup */ status = hub_port_status(hub, port1, &portstatus, &portchange); @@ -2047,35 +2090,23 @@ int usb_port_resume(struct usb_device *udev) */ status = hub_port_status(hub, port1, &portstatus, &portchange); - SuspendCleared: - if (udev->reset_resume) - want_flags = USB_PORT_STAT_POWER - | USB_PORT_STAT_CONNECTION; - else - want_flags = USB_PORT_STAT_POWER - | USB_PORT_STAT_CONNECTION - | USB_PORT_STAT_ENABLE; - mask_flags = want_flags | USB_PORT_STAT_SUSPEND; + /* TRSMRCY = 10 msec */ + msleep(10); + } - if (status < 0 || (portstatus & mask_flags) != want_flags) { - dev_dbg(hub->intfdev, - "port %d status %04x.%04x after resume, %d\n", - port1, portchange, portstatus, status); - if (status >= 0) - status = -ENODEV; - } else { - if (portchange & USB_PORT_STAT_C_SUSPEND) - clear_port_feature(hub->hdev, port1, - USB_PORT_FEAT_C_SUSPEND); - /* TRSMRCY = 10 msec */ - msleep(10); - } + SuspendCleared: + if (status == 0) { + if (portchange & USB_PORT_STAT_C_SUSPEND) + clear_port_feature(hub->hdev, port1, + USB_PORT_FEAT_C_SUSPEND); } clear_bit(port1, hub->busy_bits); if (!hub->hdev->parent && !hub->busy_bits[0]) usb_enable_root_hub_irq(hub->hdev->bus); + status = check_port_resume_type(udev, + hub, port1, status, portchange, portstatus); if (status == 0) status = finish_port_resume(udev); if (status < 0) { @@ -2085,17 +2116,16 @@ int usb_port_resume(struct usb_device *udev) return status; } +/* caller has locked udev */ static int remote_wakeup(struct usb_device *udev) { int status = 0; - usb_lock_device(udev); if (udev->state == USB_STATE_SUSPENDED) { dev_dbg(&udev->dev, "usb %sresume\n", "wakeup-"); usb_mark_last_busy(udev); status = usb_external_resume_device(udev); } - usb_unlock_device(udev); return status; } @@ -2108,14 +2138,25 @@ int usb_port_suspend(struct usb_device *udev) return 0; } +/* However we may need to do a reset-resume */ + int usb_port_resume(struct usb_device *udev) { - int status = 0; + struct usb_hub *hub = hdev_to_hub(udev->parent); + int port1 = udev->portnum; + int status; + u16 portchange, portstatus; - /* However we may need to do a reset-resume */ - if (udev->reset_resume) { + status = hub_port_status(hub, port1, &portstatus, &portchange); + status = check_port_resume_type(udev, + hub, port1, status, portchange, portstatus); + + if (status) { + dev_dbg(&udev->dev, "can't resume, status %d\n", status); + hub_port_logical_disconnect(hub, port1); + } else if (udev->reset_resume) { dev_dbg(&udev->dev, "reset-resume\n"); - status = usb_reset_device(udev); + status = usb_reset_and_verify_device(udev); } return status; } @@ -2149,7 +2190,7 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg) dev_dbg(&intf->dev, "%s\n", __func__); /* stop khubd and related activity */ - hub_quiesce(hub); + hub_quiesce(hub, HUB_SUSPEND); return 0; } @@ -2158,7 +2199,7 @@ static int hub_resume(struct usb_interface *intf) struct usb_hub *hub = usb_get_intfdata(intf); dev_dbg(&intf->dev, "%s\n", __func__); - hub_restart(hub, HUB_RESUME); + hub_activate(hub, HUB_RESUME); return 0; } @@ -2167,8 +2208,7 @@ static int hub_reset_resume(struct usb_interface *intf) struct usb_hub *hub = usb_get_intfdata(intf); dev_dbg(&intf->dev, "%s\n", __func__); - hub_power_on(hub); - hub_restart(hub, HUB_RESET_RESUME); + hub_activate(hub, HUB_RESET_RESUME); return 0; } @@ -2218,11 +2258,6 @@ static inline int remote_wakeup(struct usb_device *udev) * every 25ms for transient disconnects. When the port status has been * unchanged for 100ms it returns the port status. */ - -#define HUB_DEBOUNCE_TIMEOUT 1500 -#define HUB_DEBOUNCE_STEP 25 -#define HUB_DEBOUNCE_STABLE 100 - static int hub_port_debounce(struct usb_hub *hub, int port1) { int ret; @@ -2302,7 +2337,7 @@ static int hub_set_address(struct usb_device *udev, int devnum) * Returns device in USB_STATE_ADDRESS, except on error. * * If this is called for an already-existing device (as part of - * usb_reset_device), the caller must own the device lock. For a + * usb_reset_and_verify_device), the caller must own the device lock. For a * newly detected device that is not accessible through any global * pointers, it's not necessary to lock the device. */ @@ -2619,7 +2654,7 @@ hub_power_remaining (struct usb_hub *hub) * This routine is called when: * a port connection-change occurs; * a port enable-change occurs (often caused by EMI); - * usb_reset_device() encounters changed descriptors (as from + * usb_reset_and_verify_device() encounters changed descriptors (as from * a firmware download) * caller already locked the hub */ @@ -2629,9 +2664,11 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, struct usb_device *hdev = hub->hdev; struct device *hub_dev = hub->intfdev; struct usb_hcd *hcd = bus_to_hcd(hdev->bus); - u16 wHubCharacteristics = le16_to_cpu(hub->descriptor->wHubCharacteristics); + unsigned wHubCharacteristics = + le16_to_cpu(hub->descriptor->wHubCharacteristics); + struct usb_device *udev; int status, i; - + dev_dbg (hub_dev, "port %d, status %04x, change %04x, %s\n", port1, portstatus, portchange, portspeed (portstatus)); @@ -2640,30 +2677,73 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, set_port_led(hub, port1, HUB_LED_AUTO); hub->indicator[port1-1] = INDICATOR_AUTO; } - - /* Disconnect any existing devices under this port */ - if (hdev->children[port1-1]) - usb_disconnect(&hdev->children[port1-1]); - clear_bit(port1, hub->change_bits); #ifdef CONFIG_USB_OTG /* during HNP, don't repeat the debounce */ if (hdev->bus->is_b_host) - portchange &= ~USB_PORT_STAT_C_CONNECTION; + portchange &= ~(USB_PORT_STAT_C_CONNECTION | + USB_PORT_STAT_C_ENABLE); #endif - if (portchange & USB_PORT_STAT_C_CONNECTION) { + /* Try to use the debounce delay for protection against + * port-enable changes caused, for example, by EMI. + */ + if (portchange & (USB_PORT_STAT_C_CONNECTION | + USB_PORT_STAT_C_ENABLE)) { status = hub_port_debounce(hub, port1); if (status < 0) { if (printk_ratelimit()) dev_err (hub_dev, "connect-debounce failed, " "port %d disabled\n", port1); - goto done; + portstatus &= ~USB_PORT_STAT_CONNECTION; + } else { + portstatus = status; + } + } + + /* Try to resuscitate an existing device */ + udev = hdev->children[port1-1]; + if ((portstatus & USB_PORT_STAT_CONNECTION) && udev && + udev->state != USB_STATE_NOTATTACHED) { + + usb_lock_device(udev); + if (portstatus & USB_PORT_STAT_ENABLE) { + status = 0; /* Nothing to do */ + } else if (!udev->persist_enabled) { + status = -ENODEV; /* Mustn't resuscitate */ + +#ifdef CONFIG_USB_SUSPEND + } else if (udev->state == USB_STATE_SUSPENDED) { + /* For a suspended device, treat this as a + * remote wakeup event. + */ + if (udev->do_remote_wakeup) + status = remote_wakeup(udev); + + /* Otherwise leave it be; devices can't tell the + * difference between suspended and disabled. + */ + else + status = 0; +#endif + + } else { + status = usb_reset_device(udev); + } + usb_unlock_device(udev); + + if (status == 0) { + clear_bit(port1, hub->change_bits); + return; } - portstatus = status; } - /* Return now if nothing is connected */ + /* Disconnect any existing devices under this port */ + if (udev) + usb_disconnect(&hdev->children[port1-1]); + clear_bit(port1, hub->change_bits); + + /* Return now if debouncing failed or nothing is connected */ if (!(portstatus & USB_PORT_STAT_CONNECTION)) { /* maybe switch power back on (e.g. root hub was reset) */ @@ -2677,7 +2757,6 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, } for (i = 0; i < SET_CONFIG_TRIES; i++) { - struct usb_device *udev; /* reallocate for each attempt, since references * to the previous one can escape in various ways @@ -2858,7 +2937,7 @@ static void hub_events(void) /* If the hub has died, clean up after it */ if (hdev->state == USB_STATE_NOTATTACHED) { hub->error = -ENODEV; - hub_stop(hub); + hub_quiesce(hub, HUB_DISCONNECT); goto loop; } @@ -2877,7 +2956,7 @@ static void hub_events(void) dev_dbg (hub_dev, "resetting for error %d\n", hub->error); - ret = usb_reset_composite_device(hdev, intf); + ret = usb_reset_device(hdev); if (ret) { dev_dbg (hub_dev, "error resetting hub: %d\n", ret); @@ -2894,7 +2973,7 @@ static void hub_events(void) continue; connect_change = test_bit(i, hub->change_bits); if (!test_and_clear_bit(i, hub->event_bits) && - !connect_change && !hub->activating) + !connect_change) continue; ret = hub_port_status(hub, i, @@ -2902,11 +2981,6 @@ static void hub_events(void) if (ret < 0) continue; - if (hub->activating && !hdev->children[i-1] && - (portstatus & - USB_PORT_STAT_CONNECTION)) - connect_change = 1; - if (portchange & USB_PORT_STAT_C_CONNECTION) { clear_port_feature(hdev, i, USB_PORT_FEAT_C_CONNECTION); @@ -2941,11 +3015,16 @@ static void hub_events(void) } if (portchange & USB_PORT_STAT_C_SUSPEND) { + struct usb_device *udev; + clear_port_feature(hdev, i, USB_PORT_FEAT_C_SUSPEND); - if (hdev->children[i-1]) { + udev = hdev->children[i-1]; + if (udev) { + usb_lock_device(udev); ret = remote_wakeup(hdev-> children[i-1]); + usb_unlock_device(udev); if (ret < 0) connect_change = 1; } else { @@ -3002,8 +3081,6 @@ static void hub_events(void) } } - hub->activating = 0; - /* If this is a root hub, tell the HCD it's okay to * re-enable port-change interrupts now. */ if (!hdev->parent && !hub->busy_bits[0]) @@ -3172,12 +3249,12 @@ static int descriptors_changed(struct usb_device *udev, } /** - * usb_reset_device - perform a USB port reset to reinitialize a device + * usb_reset_and_verify_device - perform a USB port reset to reinitialize a device * @udev: device to reset (not in SUSPENDED or NOTATTACHED state) * * WARNING - don't use this routine to reset a composite device * (one with multiple interfaces owned by separate drivers)! - * Use usb_reset_composite_device() instead. + * Use usb_reset_device() instead. * * Do a port reset, reassign the device's address, and establish its * former operating configuration. If the reset fails, or the device's @@ -3201,7 +3278,7 @@ static int descriptors_changed(struct usb_device *udev, * holding the device lock because these tasks should always call * usb_autopm_resume_device(), thereby preventing any unwanted autoresume. */ -int usb_reset_device(struct usb_device *udev) +static int usb_reset_and_verify_device(struct usb_device *udev) { struct usb_device *parent_hdev = udev->parent; struct usb_hub *parent_hub; @@ -3289,26 +3366,28 @@ re_enumerate: hub_port_logical_disconnect(parent_hub, port1); return -ENODEV; } -EXPORT_SYMBOL_GPL(usb_reset_device); /** - * usb_reset_composite_device - warn interface drivers and perform a USB port reset + * usb_reset_device - warn interface drivers and perform a USB port reset * @udev: device to reset (not in SUSPENDED or NOTATTACHED state) - * @iface: interface bound to the driver making the request (optional) * * Warns all drivers bound to registered interfaces (using their pre_reset * method), performs the port reset, and then lets the drivers know that * the reset is over (using their post_reset method). * - * Return value is the same as for usb_reset_device(). + * Return value is the same as for usb_reset_and_verify_device(). * * The caller must own the device lock. For example, it's safe to use * this from a driver probe() routine after downloading new firmware. * For calls that might not occur during probe(), drivers should lock * the device using usb_lock_device_for_reset(). + * + * If an interface is currently being probed or disconnected, we assume + * its driver knows how to handle resets. For all other interfaces, + * if the driver doesn't have pre_reset and post_reset methods then + * we attempt to unbind it and rebind afterward. */ -int usb_reset_composite_device(struct usb_device *udev, - struct usb_interface *iface) +int usb_reset_device(struct usb_device *udev) { int ret; int i; @@ -3324,40 +3403,47 @@ int usb_reset_composite_device(struct usb_device *udev, /* Prevent autosuspend during the reset */ usb_autoresume_device(udev); - if (iface && iface->condition != USB_INTERFACE_BINDING) - iface = NULL; - if (config) { for (i = 0; i < config->desc.bNumInterfaces; ++i) { struct usb_interface *cintf = config->interface[i]; struct usb_driver *drv; + int unbind = 0; if (cintf->dev.driver) { drv = to_usb_driver(cintf->dev.driver); - if (drv->pre_reset) - (drv->pre_reset)(cintf); - /* FIXME: Unbind if pre_reset returns an error or isn't defined */ + if (drv->pre_reset && drv->post_reset) + unbind = (drv->pre_reset)(cintf); + else if (cintf->condition == + USB_INTERFACE_BOUND) + unbind = 1; + if (unbind) + usb_forced_unbind_intf(cintf); } } } - ret = usb_reset_device(udev); + ret = usb_reset_and_verify_device(udev); if (config) { for (i = config->desc.bNumInterfaces - 1; i >= 0; --i) { struct usb_interface *cintf = config->interface[i]; struct usb_driver *drv; + int rebind = cintf->needs_binding; - if (cintf->dev.driver) { + if (!rebind && cintf->dev.driver) { drv = to_usb_driver(cintf->dev.driver); if (drv->post_reset) - (drv->post_reset)(cintf); - /* FIXME: Unbind if post_reset returns an error or isn't defined */ + rebind = (drv->post_reset)(cintf); + else if (cintf->condition == + USB_INTERFACE_BOUND) + rebind = 1; } + if (rebind) + usb_rebind_intf(cintf); } } usb_autosuspend_device(udev); return ret; } -EXPORT_SYMBOL_GPL(usb_reset_composite_device); +EXPORT_SYMBOL_GPL(usb_reset_device); diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c index 1d253dd4ea8..db410e92c80 100644 --- a/drivers/usb/core/inode.c +++ b/drivers/usb/core/inode.c @@ -712,25 +712,11 @@ static void usbfs_add_device(struct usb_device *dev) static void usbfs_remove_device(struct usb_device *dev) { - struct dev_state *ds; - struct siginfo sinfo; - if (dev->usbfs_dentry) { fs_remove_file (dev->usbfs_dentry); dev->usbfs_dentry = NULL; } - while (!list_empty(&dev->filelist)) { - ds = list_entry(dev->filelist.next, struct dev_state, list); - wake_up_all(&ds->wait); - list_del_init(&ds->list); - if (ds->discsignr) { - sinfo.si_signo = ds->discsignr; - sinfo.si_errno = EPIPE; - sinfo.si_code = SI_ASYNCIO; - sinfo.si_addr = ds->disccontext; - kill_pid_info_as_uid(ds->discsignr, &sinfo, ds->disc_pid, ds->disc_uid, ds->disc_euid, ds->secid); - } - } + usb_fs_classdev_common_remove(dev); } static int usbfs_notify(struct notifier_block *self, unsigned long action, void *dev) diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index fe47d145255..2fcc06eb5e6 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -400,7 +400,7 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, if (usb_pipein(pipe)) urb_flags |= URB_SHORT_NOT_OK; - for (i = 0; i < io->entries; i++) { + for_each_sg(sg, sg, io->entries, i) { unsigned len; io->urbs[i] = usb_alloc_urb(0, mem_flags); @@ -434,17 +434,17 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, * to prevent stale pointers and to help spot bugs. */ if (dma) { - io->urbs[i]->transfer_dma = sg_dma_address(sg + i); - len = sg_dma_len(sg + i); + io->urbs[i]->transfer_dma = sg_dma_address(sg); + len = sg_dma_len(sg); #if defined(CONFIG_HIGHMEM) || defined(CONFIG_GART_IOMMU) io->urbs[i]->transfer_buffer = NULL; #else - io->urbs[i]->transfer_buffer = sg_virt(&sg[i]); + io->urbs[i]->transfer_buffer = sg_virt(sg); #endif } else { /* hc may use _only_ transfer_buffer */ - io->urbs[i]->transfer_buffer = sg_virt(&sg[i]); - len = sg[i].length; + io->urbs[i]->transfer_buffer = sg_virt(sg); + len = sg->length; } if (length) { @@ -1090,7 +1090,7 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0) if (!device_is_registered(&interface->dev)) continue; dev_dbg(&dev->dev, "unregistering interface %s\n", - interface->dev.bus_id); + dev_name(&interface->dev)); device_del(&interface->dev); usb_remove_sysfs_intf_files(interface); } @@ -1476,7 +1476,7 @@ static struct usb_interface_assoc_descriptor *find_iad(struct usb_device *dev, * * This call is synchronous. The calling context must be able to sleep, * must own the device lock, and must not hold the driver model's USB - * bus mutex; usb device driver probe() methods cannot use this routine. + * bus mutex; usb interface driver probe() methods cannot use this routine. * * Returns zero on success, or else the status code returned by the * underlying call that failed. On successful completion, each interface @@ -1611,7 +1611,7 @@ free_interfaces: intf->dev.dma_mask = dev->dev.dma_mask; device_initialize(&intf->dev); mark_quiesced(intf); - sprintf(&intf->dev.bus_id[0], "%d-%s:%d.%d", + dev_set_name(&intf->dev, "%d-%s:%d.%d", dev->bus->busnum, dev->devpath, configuration, alt->desc.bInterfaceNumber); } @@ -1631,12 +1631,12 @@ free_interfaces: dev_dbg(&dev->dev, "adding %s (config #%d, interface %d)\n", - intf->dev.bus_id, configuration, + dev_name(&intf->dev), configuration, intf->cur_altsetting->desc.bInterfaceNumber); ret = device_add(&intf->dev); if (ret != 0) { dev_err(&dev->dev, "device_add(%s) --> %d\n", - intf->dev.bus_id, ret); + dev_name(&intf->dev), ret); continue; } usb_create_sysfs_intf_files(intf); diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 32577437583..84fcaa6a21e 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -308,7 +308,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent, * by location for diagnostics, tools, driver model, etc. The * string is a path along hub ports, from the root. Each device's * dev->devpath will be stable until USB is re-cabled, and hubs - * are often labeled with these port numbers. The bus_id isn't + * are often labeled with these port numbers. The name isn't * as stable: bus->busnum changes easily from modprobe order, * cardbus or pci hotplugging, and so on. */ @@ -316,7 +316,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent, dev->devpath[0] = '0'; dev->dev.parent = bus->controller; - sprintf(&dev->dev.bus_id[0], "usb%d", bus->busnum); + dev_set_name(&dev->dev, "usb%d", bus->busnum); root_hub = 1; } else { /* match any labeling on the hubs; it's one-based */ @@ -328,8 +328,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent, "%s.%d", parent->devpath, port1); dev->dev.parent = &parent->dev; - sprintf(&dev->dev.bus_id[0], "%d-%s", - bus->busnum, dev->devpath); + dev_set_name(&dev->dev, "%d-%s", bus->busnum, dev->devpath); /* hub driver sets up TT records */ } diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index 1a8bc21c335..d9a6e16dbf8 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -29,6 +29,8 @@ extern int usb_choose_configuration(struct usb_device *udev); extern void usb_kick_khubd(struct usb_device *dev); extern int usb_match_device(struct usb_device *dev, const struct usb_device_id *id); +extern void usb_forced_unbind_intf(struct usb_interface *intf); +extern void usb_rebind_intf(struct usb_interface *intf); extern int usb_hub_init(void); extern void usb_hub_cleanup(void); @@ -140,26 +142,11 @@ extern struct usb_driver usbfs_driver; extern const struct file_operations usbfs_devices_fops; extern const struct file_operations usbdev_file_operations; extern void usbfs_conn_disc_event(void); +extern void usb_fs_classdev_common_remove(struct usb_device *udev); extern int usb_devio_init(void); extern void usb_devio_cleanup(void); -struct dev_state { - struct list_head list; /* state list */ - struct usb_device *dev; - struct file *file; - spinlock_t lock; /* protects the async urb lists */ - struct list_head async_pending; - struct list_head async_completed; - wait_queue_head_t wait; /* wake up if a request completed */ - unsigned int discsignr; - struct pid *disc_pid; - uid_t disc_uid, disc_euid; - void __user *disccontext; - unsigned long ifclaimed; - u32 secid; -}; - /* internal notify stuff */ extern void usb_notify_add_device(struct usb_device *udev); extern void usb_notify_remove_device(struct usb_device *udev); diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index d6bab0d5f45..c6a8c6b1116 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -586,6 +586,20 @@ config USB_G_PRINTER For more information, see Documentation/usb/gadget_printer.txt which includes sample code for accessing the device file. +config USB_CDC_COMPOSITE + tristate "CDC Composite Device (Ethernet and ACM)" + depends on NET + help + This driver provides two functions in one configuration: + a CDC Ethernet (ECM) link, and a CDC ACM (serial port) link. + + This driver requires four bulk and two interrupt endpoints, + plus the ability to handle altsettings. Not all peripheral + controllers are that capable. + + Say "y" to link the driver statically, or "m" to build a + dynamically linked module. + # put drivers that need isochronous transfer support (for audio # or video class gadget drivers), or specific hardware, here. diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index e258afd25fa..fcb5cb9094d 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -22,18 +22,22 @@ obj-$(CONFIG_USB_M66592) += m66592-udc.o # # USB gadget drivers # -g_zero-objs := zero.o usbstring.o config.o epautoconf.o -g_ether-objs := ether.o usbstring.o config.o epautoconf.o -g_serial-objs := serial.o usbstring.o config.o epautoconf.o +C_UTILS = composite.o usbstring.o config.o epautoconf.o + +g_zero-objs := zero.o f_sourcesink.o f_loopback.o $(C_UTILS) +g_ether-objs := ether.o u_ether.o f_subset.o f_ecm.o $(C_UTILS) +g_serial-objs := serial.o u_serial.o f_acm.o f_serial.o $(C_UTILS) g_midi-objs := gmidi.o usbstring.o config.o epautoconf.o gadgetfs-objs := inode.o g_file_storage-objs := file_storage.o usbstring.o config.o \ epautoconf.o g_printer-objs := printer.o usbstring.o config.o \ epautoconf.o +g_cdc-objs := cdc2.o u_ether.o f_ecm.o \ + u_serial.o f_acm.o $(C_UTILS) ifeq ($(CONFIG_USB_ETH_RNDIS),y) - g_ether-objs += rndis.o + g_ether-objs += f_rndis.o rndis.o endif obj-$(CONFIG_USB_ZERO) += g_zero.o @@ -43,4 +47,5 @@ obj-$(CONFIG_USB_FILE_STORAGE) += g_file_storage.o obj-$(CONFIG_USB_G_SERIAL) += g_serial.o obj-$(CONFIG_USB_G_PRINTER) += g_printer.o obj-$(CONFIG_USB_MIDI_GADGET) += g_midi.o +obj-$(CONFIG_USB_CDC_COMPOSITE) += g_cdc.o diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c index f261d2a9a5f..1500e1b3c30 100644 --- a/drivers/usb/gadget/amd5536udc.c +++ b/drivers/usb/gadget/amd5536udc.c @@ -3342,7 +3342,7 @@ static int udc_probe(struct udc *dev) spin_lock_init(&dev->lock); dev->gadget.ops = &udc_ops; - strcpy(dev->gadget.dev.bus_id, "gadget"); + dev_set_name(&dev->gadget.dev, "gadget"); dev->gadget.dev.release = gadget_release; dev->gadget.name = name; dev->gadget.name = name; diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index b6b2a0a5ba3..e2d8a5d86c4 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -1687,6 +1687,19 @@ static int __init at91udc_probe(struct platform_device *pdev) udc->board.pullup_active_low); } + /* newer chips have more FIFO memory than rm9200 */ + if (cpu_is_at91sam9260()) { + udc->ep[0].maxpacket = 64; + udc->ep[3].maxpacket = 64; + udc->ep[4].maxpacket = 512; + udc->ep[5].maxpacket = 512; + } else if (cpu_is_at91sam9261()) { + udc->ep[3].maxpacket = 64; + } else if (cpu_is_at91sam9263()) { + udc->ep[0].maxpacket = 64; + udc->ep[3].maxpacket = 64; + } + udc->udp_baseaddr = ioremap(res->start, res->end - res->start + 1); if (!udc->udp_baseaddr) { retval = -ENOMEM; diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c new file mode 100644 index 00000000000..d490d028950 --- /dev/null +++ b/drivers/usb/gadget/cdc2.c @@ -0,0 +1,246 @@ +/* + * cdc2.c -- CDC Composite driver, with ECM and ACM support + * + * Copyright (C) 2008 David Brownell + * Copyright (C) 2008 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/kernel.h> +#include <linux/utsname.h> + +#include "u_ether.h" +#include "u_serial.h" + + +#define DRIVER_DESC "CDC Composite Gadget" +#define DRIVER_VERSION "King Kamehameha Day 2008" + +/*-------------------------------------------------------------------------*/ + +/* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! + * Instead: allocate your own, using normal USB-IF procedures. + */ + +/* Thanks to NetChip Technologies for donating this product ID. + * It's for devices with only this composite CDC configuration. + */ +#define CDC_VENDOR_NUM 0x0525 /* NetChip */ +#define CDC_PRODUCT_NUM 0xa4aa /* CDC Composite: ECM + ACM */ + +/*-------------------------------------------------------------------------*/ + +static struct usb_device_descriptor device_desc = { + .bLength = sizeof device_desc, + .bDescriptorType = USB_DT_DEVICE, + + .bcdUSB = __constant_cpu_to_le16(0x0200), + + .bDeviceClass = USB_CLASS_COMM, + .bDeviceSubClass = 0, + .bDeviceProtocol = 0, + /* .bMaxPacketSize0 = f(hardware) */ + + /* Vendor and product id can be overridden by module parameters. */ + .idVendor = __constant_cpu_to_le16(CDC_VENDOR_NUM), + .idProduct = __constant_cpu_to_le16(CDC_PRODUCT_NUM), + /* .bcdDevice = f(hardware) */ + /* .iManufacturer = DYNAMIC */ + /* .iProduct = DYNAMIC */ + /* NO SERIAL NUMBER */ + .bNumConfigurations = 1, +}; + +static struct usb_otg_descriptor otg_descriptor = { + .bLength = sizeof otg_descriptor, + .bDescriptorType = USB_DT_OTG, + + /* REVISIT SRP-only hardware is possible, although + * it would not be called "OTG" ... + */ + .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, +}; + +static const struct usb_descriptor_header *otg_desc[] = { + (struct usb_descriptor_header *) &otg_descriptor, + NULL, +}; + + +/* string IDs are assigned dynamically */ + +#define STRING_MANUFACTURER_IDX 0 +#define STRING_PRODUCT_IDX 1 + +static char manufacturer[50]; + +static struct usb_string strings_dev[] = { + [STRING_MANUFACTURER_IDX].s = manufacturer, + [STRING_PRODUCT_IDX].s = DRIVER_DESC, + { } /* end of list */ +}; + +static struct usb_gadget_strings stringtab_dev = { + .language = 0x0409, /* en-us */ + .strings = strings_dev, +}; + +static struct usb_gadget_strings *dev_strings[] = { + &stringtab_dev, + NULL, +}; + +static u8 hostaddr[ETH_ALEN]; + +/*-------------------------------------------------------------------------*/ + +/* + * We _always_ have both CDC ECM and CDC ACM functions. + */ +static int __init cdc_do_config(struct usb_configuration *c) +{ + int status; + + if (gadget_is_otg(c->cdev->gadget)) { + c->descriptors = otg_desc; + c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } + + status = ecm_bind_config(c, hostaddr); + if (status < 0) + return status; + + status = acm_bind_config(c, 0); + if (status < 0) + return status; + + return 0; +} + +static struct usb_configuration cdc_config_driver = { + .label = "CDC Composite (ECM + ACM)", + .bind = cdc_do_config, + .bConfigurationValue = 1, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + .bMaxPower = 1, /* 2 mA, minimal */ +}; + +/*-------------------------------------------------------------------------*/ + +static int __init cdc_bind(struct usb_composite_dev *cdev) +{ + int gcnum; + struct usb_gadget *gadget = cdev->gadget; + int status; + + if (!can_support_ecm(cdev->gadget)) { + ERROR(cdev, "controller '%s' not usable\n", gadget->name); + return -EINVAL; + } + + /* set up network link layer */ + status = gether_setup(cdev->gadget, hostaddr); + if (status < 0) + return status; + + /* set up serial link layer */ + status = gserial_setup(cdev->gadget, 1); + if (status < 0) + goto fail0; + + gcnum = usb_gadget_controller_number(gadget); + if (gcnum >= 0) + device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); + else { + /* We assume that can_support_ecm() tells the truth; + * but if the controller isn't recognized at all then + * that assumption is a bit more likely to be wrong. + */ + WARN(cdev, "controller '%s' not recognized; trying %s\n", + gadget->name, + cdc_config_driver.label); + device_desc.bcdDevice = + __constant_cpu_to_le16(0x0300 | 0x0099); + } + + + /* Allocate string descriptor numbers ... note that string + * contents can be overridden by the composite_dev glue. + */ + + /* device descriptor strings: manufacturer, product */ + snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", + init_utsname()->sysname, init_utsname()->release, + gadget->name); + status = usb_string_id(cdev); + if (status < 0) + goto fail1; + strings_dev[STRING_MANUFACTURER_IDX].id = status; + device_desc.iManufacturer = status; + + status = usb_string_id(cdev); + if (status < 0) + goto fail1; + strings_dev[STRING_PRODUCT_IDX].id = status; + device_desc.iProduct = status; + + /* register our configuration */ + status = usb_add_config(cdev, &cdc_config_driver); + if (status < 0) + goto fail1; + + INFO(cdev, "%s, version: " DRIVER_VERSION "\n", DRIVER_DESC); + + return 0; + +fail1: + gserial_cleanup(); +fail0: + gether_cleanup(); + return status; +} + +static int __exit cdc_unbind(struct usb_composite_dev *cdev) +{ + gserial_cleanup(); + gether_cleanup(); + return 0; +} + +static struct usb_composite_driver cdc_driver = { + .name = "g_cdc", + .dev = &device_desc, + .strings = dev_strings, + .bind = cdc_bind, + .unbind = __exit_p(cdc_unbind), +}; + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("David Brownell"); +MODULE_LICENSE("GPL"); + +static int __init init(void) +{ + return usb_composite_register(&cdc_driver); +} +module_init(init); + +static void __exit cleanup(void) +{ + usb_composite_unregister(&cdc_driver); +} +module_exit(cleanup); diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c new file mode 100644 index 00000000000..85c876c1f15 --- /dev/null +++ b/drivers/usb/gadget/composite.c @@ -0,0 +1,1041 @@ +/* + * composite.c - infrastructure for Composite USB Gadgets + * + * Copyright (C) 2006-2008 David Brownell + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* #define VERBOSE_DEBUG */ + +#include <linux/kallsyms.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/device.h> + +#include <linux/usb/composite.h> + + +/* + * The code in this file is utility code, used to build a gadget driver + * from one or more "function" drivers, one or more "configuration" + * objects, and a "usb_composite_driver" by gluing them together along + * with the relevant device-wide data. + */ + +/* big enough to hold our biggest descriptor */ +#define USB_BUFSIZ 512 + +static struct usb_composite_driver *composite; + +/* Some systems will need runtime overrides for the product identifers + * published in the device descriptor, either numbers or strings or both. + * String parameters are in UTF-8 (superset of ASCII's 7 bit characters). + */ + +static ushort idVendor; +module_param(idVendor, ushort, 0); +MODULE_PARM_DESC(idVendor, "USB Vendor ID"); + +static ushort idProduct; +module_param(idProduct, ushort, 0); +MODULE_PARM_DESC(idProduct, "USB Product ID"); + +static ushort bcdDevice; +module_param(bcdDevice, ushort, 0); +MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)"); + +static char *iManufacturer; +module_param(iManufacturer, charp, 0); +MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string"); + +static char *iProduct; +module_param(iProduct, charp, 0); +MODULE_PARM_DESC(iProduct, "USB Product string"); + +static char *iSerialNumber; +module_param(iSerialNumber, charp, 0); +MODULE_PARM_DESC(iSerialNumber, "SerialNumber string"); + +/*-------------------------------------------------------------------------*/ + +/** + * usb_add_function() - add a function to a configuration + * @config: the configuration + * @function: the function being added + * Context: single threaded during gadget setup + * + * After initialization, each configuration must have one or more + * functions added to it. Adding a function involves calling its @bind() + * method to allocate resources such as interface and string identifiers + * and endpoints. + * + * This function returns the value of the function's bind(), which is + * zero for success else a negative errno value. + */ +int __init usb_add_function(struct usb_configuration *config, + struct usb_function *function) +{ + int value = -EINVAL; + + DBG(config->cdev, "adding '%s'/%p to config '%s'/%p\n", + function->name, function, + config->label, config); + + if (!function->set_alt || !function->disable) + goto done; + + function->config = config; + list_add_tail(&function->list, &config->functions); + + /* REVISIT *require* function->bind? */ + if (function->bind) { + value = function->bind(config, function); + if (value < 0) { + list_del(&function->list); + function->config = NULL; + } + } else + value = 0; + + /* We allow configurations that don't work at both speeds. + * If we run into a lowspeed Linux system, treat it the same + * as full speed ... it's the function drivers that will need + * to avoid bulk and ISO transfers. + */ + if (!config->fullspeed && function->descriptors) + config->fullspeed = true; + if (!config->highspeed && function->hs_descriptors) + config->highspeed = true; + +done: + if (value) + DBG(config->cdev, "adding '%s'/%p --> %d\n", + function->name, function, value); + return value; +} + +/** + * usb_interface_id() - allocate an unused interface ID + * @config: configuration associated with the interface + * @function: function handling the interface + * Context: single threaded during gadget setup + * + * usb_interface_id() is called from usb_function.bind() callbacks to + * allocate new interface IDs. The function driver will then store that + * ID in interface, association, CDC union, and other descriptors. It + * will also handle any control requests targetted at that interface, + * particularly changing its altsetting via set_alt(). There may + * also be class-specific or vendor-specific requests to handle. + * + * All interface identifier should be allocated using this routine, to + * ensure that for example different functions don't wrongly assign + * different meanings to the same identifier. Note that since interface + * identifers are configuration-specific, functions used in more than + * one configuration (or more than once in a given configuration) need + * multiple versions of the relevant descriptors. + * + * Returns the interface ID which was allocated; or -ENODEV if no + * more interface IDs can be allocated. + */ +int __init usb_interface_id(struct usb_configuration *config, + struct usb_function *function) +{ + unsigned id = config->next_interface_id; + + if (id < MAX_CONFIG_INTERFACES) { + config->interface[id] = function; + config->next_interface_id = id + 1; + return id; + } + return -ENODEV; +} + +static int config_buf(struct usb_configuration *config, + enum usb_device_speed speed, void *buf, u8 type) +{ + struct usb_config_descriptor *c = buf; + void *next = buf + USB_DT_CONFIG_SIZE; + int len = USB_BUFSIZ - USB_DT_CONFIG_SIZE; + struct usb_function *f; + int status; + + /* write the config descriptor */ + c = buf; + c->bLength = USB_DT_CONFIG_SIZE; + c->bDescriptorType = type; + /* wTotalLength is written later */ + c->bNumInterfaces = config->next_interface_id; + c->bConfigurationValue = config->bConfigurationValue; + c->iConfiguration = config->iConfiguration; + c->bmAttributes = USB_CONFIG_ATT_ONE | config->bmAttributes; + c->bMaxPower = config->bMaxPower; + + /* There may be e.g. OTG descriptors */ + if (config->descriptors) { + status = usb_descriptor_fillbuf(next, len, + config->descriptors); + if (status < 0) + return status; + len -= status; + next += status; + } + + /* add each function's descriptors */ + list_for_each_entry(f, &config->functions, list) { + struct usb_descriptor_header **descriptors; + + if (speed == USB_SPEED_HIGH) + descriptors = f->hs_descriptors; + else + descriptors = f->descriptors; + if (!descriptors) + continue; + status = usb_descriptor_fillbuf(next, len, + (const struct usb_descriptor_header **) descriptors); + if (status < 0) + return status; + len -= status; + next += status; + } + + len = next - buf; + c->wTotalLength = cpu_to_le16(len); + return len; +} + +static int config_desc(struct usb_composite_dev *cdev, unsigned w_value) +{ + struct usb_gadget *gadget = cdev->gadget; + struct usb_configuration *c; + u8 type = w_value >> 8; + enum usb_device_speed speed = USB_SPEED_UNKNOWN; + + if (gadget_is_dualspeed(gadget)) { + int hs = 0; + + if (gadget->speed == USB_SPEED_HIGH) + hs = 1; + if (type == USB_DT_OTHER_SPEED_CONFIG) + hs = !hs; + if (hs) + speed = USB_SPEED_HIGH; + + } + + /* This is a lookup by config *INDEX* */ + w_value &= 0xff; + list_for_each_entry(c, &cdev->configs, list) { + /* ignore configs that won't work at this speed */ + if (speed == USB_SPEED_HIGH) { + if (!c->highspeed) + continue; + } else { + if (!c->fullspeed) + continue; + } + if (w_value == 0) + return config_buf(c, speed, cdev->req->buf, type); + w_value--; + } + return -EINVAL; +} + +static int count_configs(struct usb_composite_dev *cdev, unsigned type) +{ + struct usb_gadget *gadget = cdev->gadget; + struct usb_configuration *c; + unsigned count = 0; + int hs = 0; + + if (gadget_is_dualspeed(gadget)) { + if (gadget->speed == USB_SPEED_HIGH) + hs = 1; + if (type == USB_DT_DEVICE_QUALIFIER) + hs = !hs; + } + list_for_each_entry(c, &cdev->configs, list) { + /* ignore configs that won't work at this speed */ + if (hs) { + if (!c->highspeed) + continue; + } else { + if (!c->fullspeed) + continue; + } + count++; + } + return count; +} + +static void device_qual(struct usb_composite_dev *cdev) +{ + struct usb_qualifier_descriptor *qual = cdev->req->buf; + + qual->bLength = sizeof(*qual); + qual->bDescriptorType = USB_DT_DEVICE_QUALIFIER; + /* POLICY: same bcdUSB and device type info at both speeds */ + qual->bcdUSB = cdev->desc.bcdUSB; + qual->bDeviceClass = cdev->desc.bDeviceClass; + qual->bDeviceSubClass = cdev->desc.bDeviceSubClass; + qual->bDeviceProtocol = cdev->desc.bDeviceProtocol; + /* ASSUME same EP0 fifo size at both speeds */ + qual->bMaxPacketSize0 = cdev->desc.bMaxPacketSize0; + qual->bNumConfigurations = count_configs(cdev, USB_DT_DEVICE_QUALIFIER); + qual->bRESERVED = 0; +} + +/*-------------------------------------------------------------------------*/ + +static void reset_config(struct usb_composite_dev *cdev) +{ + struct usb_function *f; + + DBG(cdev, "reset config\n"); + + list_for_each_entry(f, &cdev->config->functions, list) { + if (f->disable) + f->disable(f); + } + cdev->config = NULL; +} + +static int set_config(struct usb_composite_dev *cdev, + const struct usb_ctrlrequest *ctrl, unsigned number) +{ + struct usb_gadget *gadget = cdev->gadget; + struct usb_configuration *c = NULL; + int result = -EINVAL; + unsigned power = gadget_is_otg(gadget) ? 8 : 100; + int tmp; + + if (cdev->config) + reset_config(cdev); + + if (number) { + list_for_each_entry(c, &cdev->configs, list) { + if (c->bConfigurationValue == number) { + result = 0; + break; + } + } + if (result < 0) + goto done; + } else + result = 0; + + INFO(cdev, "%s speed config #%d: %s\n", + ({ char *speed; + switch (gadget->speed) { + case USB_SPEED_LOW: speed = "low"; break; + case USB_SPEED_FULL: speed = "full"; break; + case USB_SPEED_HIGH: speed = "high"; break; + default: speed = "?"; break; + } ; speed; }), number, c ? c->label : "unconfigured"); + + if (!c) + goto done; + + cdev->config = c; + + /* Initialize all interfaces by setting them to altsetting zero. */ + for (tmp = 0; tmp < MAX_CONFIG_INTERFACES; tmp++) { + struct usb_function *f = c->interface[tmp]; + + if (!f) + break; + + result = f->set_alt(f, tmp, 0); + if (result < 0) { + DBG(cdev, "interface %d (%s/%p) alt 0 --> %d\n", + tmp, f->name, f, result); + + reset_config(cdev); + goto done; + } + } + + /* when we return, be sure our power usage is valid */ + power = 2 * c->bMaxPower; +done: + usb_gadget_vbus_draw(gadget, power); + return result; +} + +/** + * usb_add_config() - add a configuration to a device. + * @cdev: wraps the USB gadget + * @config: the configuration, with bConfigurationValue assigned + * Context: single threaded during gadget setup + * + * One of the main tasks of a composite driver's bind() routine is to + * add each of the configurations it supports, using this routine. + * + * This function returns the value of the configuration's bind(), which + * is zero for success else a negative errno value. Binding configurations + * assigns global resources including string IDs, and per-configuration + * resources such as interface IDs and endpoints. + */ +int __init usb_add_config(struct usb_composite_dev *cdev, + struct usb_configuration *config) +{ + int status = -EINVAL; + struct usb_configuration *c; + + DBG(cdev, "adding config #%u '%s'/%p\n", + config->bConfigurationValue, + config->label, config); + + if (!config->bConfigurationValue || !config->bind) + goto done; + + /* Prevent duplicate configuration identifiers */ + list_for_each_entry(c, &cdev->configs, list) { + if (c->bConfigurationValue == config->bConfigurationValue) { + status = -EBUSY; + goto done; + } + } + + config->cdev = cdev; + list_add_tail(&config->list, &cdev->configs); + + INIT_LIST_HEAD(&config->functions); + config->next_interface_id = 0; + + status = config->bind(config); + if (status < 0) { + list_del(&config->list); + config->cdev = NULL; + } else { + unsigned i; + + DBG(cdev, "cfg %d/%p speeds:%s%s\n", + config->bConfigurationValue, config, + config->highspeed ? " high" : "", + config->fullspeed + ? (gadget_is_dualspeed(cdev->gadget) + ? " full" + : " full/low") + : ""); + + for (i = 0; i < MAX_CONFIG_INTERFACES; i++) { + struct usb_function *f = config->interface[i]; + + if (!f) + continue; + DBG(cdev, " interface %d = %s/%p\n", + i, f->name, f); + } + } + + /* set_alt(), or next config->bind(), sets up + * ep->driver_data as needed. + */ + usb_ep_autoconfig_reset(cdev->gadget); + +done: + if (status) + DBG(cdev, "added config '%s'/%u --> %d\n", config->label, + config->bConfigurationValue, status); + return status; +} + +/*-------------------------------------------------------------------------*/ + +/* We support strings in multiple languages ... string descriptor zero + * says which languages are supported. The typical case will be that + * only one language (probably English) is used, with I18N handled on + * the host side. + */ + +static void collect_langs(struct usb_gadget_strings **sp, __le16 *buf) +{ + const struct usb_gadget_strings *s; + u16 language; + __le16 *tmp; + + while (*sp) { + s = *sp; + language = cpu_to_le16(s->language); + for (tmp = buf; *tmp && tmp < &buf[126]; tmp++) { + if (*tmp == language) + goto repeat; + } + *tmp++ = language; +repeat: + sp++; + } +} + +static int lookup_string( + struct usb_gadget_strings **sp, + void *buf, + u16 language, + int id +) +{ + struct usb_gadget_strings *s; + int value; + + while (*sp) { + s = *sp++; + if (s->language != language) + continue; + value = usb_gadget_get_string(s, id, buf); + if (value > 0) + return value; + } + return -EINVAL; +} + +static int get_string(struct usb_composite_dev *cdev, + void *buf, u16 language, int id) +{ + struct usb_configuration *c; + struct usb_function *f; + int len; + + /* Yes, not only is USB's I18N support probably more than most + * folk will ever care about ... also, it's all supported here. + * (Except for UTF8 support for Unicode's "Astral Planes".) + */ + + /* 0 == report all available language codes */ + if (id == 0) { + struct usb_string_descriptor *s = buf; + struct usb_gadget_strings **sp; + + memset(s, 0, 256); + s->bDescriptorType = USB_DT_STRING; + + sp = composite->strings; + if (sp) + collect_langs(sp, s->wData); + + list_for_each_entry(c, &cdev->configs, list) { + sp = c->strings; + if (sp) + collect_langs(sp, s->wData); + + list_for_each_entry(f, &c->functions, list) { + sp = f->strings; + if (sp) + collect_langs(sp, s->wData); + } + } + + for (len = 0; s->wData[len] && len <= 126; len++) + continue; + if (!len) + return -EINVAL; + + s->bLength = 2 * (len + 1); + return s->bLength; + } + + /* Otherwise, look up and return a specified string. String IDs + * are device-scoped, so we look up each string table we're told + * about. These lookups are infrequent; simpler-is-better here. + */ + if (composite->strings) { + len = lookup_string(composite->strings, buf, language, id); + if (len > 0) + return len; + } + list_for_each_entry(c, &cdev->configs, list) { + if (c->strings) { + len = lookup_string(c->strings, buf, language, id); + if (len > 0) + return len; + } + list_for_each_entry(f, &c->functions, list) { + if (!f->strings) + continue; + len = lookup_string(f->strings, buf, language, id); + if (len > 0) + return len; + } + } + return -EINVAL; +} + +/** + * usb_string_id() - allocate an unused string ID + * @cdev: the device whose string descriptor IDs are being allocated + * Context: single threaded during gadget setup + * + * @usb_string_id() is called from bind() callbacks to allocate + * string IDs. Drivers for functions, configurations, or gadgets will + * then store that ID in the appropriate descriptors and string table. + * + * All string identifier should be allocated using this routine, to + * ensure that for example different functions don't wrongly assign + * different meanings to the same identifier. + */ +int __init usb_string_id(struct usb_composite_dev *cdev) +{ + if (cdev->next_string_id < 254) { + /* string id 0 is reserved */ + cdev->next_string_id++; + return cdev->next_string_id; + } + return -ENODEV; +} + +/*-------------------------------------------------------------------------*/ + +static void composite_setup_complete(struct usb_ep *ep, struct usb_request *req) +{ + if (req->status || req->actual != req->length) + DBG((struct usb_composite_dev *) ep->driver_data, + "setup complete --> %d, %d/%d\n", + req->status, req->actual, req->length); +} + +/* + * The setup() callback implements all the ep0 functionality that's + * not handled lower down, in hardware or the hardware driver(like + * device and endpoint feature flags, and their status). It's all + * housekeeping for the gadget function we're implementing. Most of + * the work is in config and function specific setup. + */ +static int +composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) +{ + struct usb_composite_dev *cdev = get_gadget_data(gadget); + struct usb_request *req = cdev->req; + int value = -EOPNOTSUPP; + u16 w_index = le16_to_cpu(ctrl->wIndex); + u16 w_value = le16_to_cpu(ctrl->wValue); + u16 w_length = le16_to_cpu(ctrl->wLength); + struct usb_function *f = NULL; + + /* partial re-init of the response message; the function or the + * gadget might need to intercept e.g. a control-OUT completion + * when we delegate to it. + */ + req->zero = 0; + req->complete = composite_setup_complete; + req->length = USB_BUFSIZ; + gadget->ep0->driver_data = cdev; + + switch (ctrl->bRequest) { + + /* we handle all standard USB descriptors */ + case USB_REQ_GET_DESCRIPTOR: + if (ctrl->bRequestType != USB_DIR_IN) + goto unknown; + switch (w_value >> 8) { + + case USB_DT_DEVICE: + cdev->desc.bNumConfigurations = + count_configs(cdev, USB_DT_DEVICE); + value = min(w_length, (u16) sizeof cdev->desc); + memcpy(req->buf, &cdev->desc, value); + break; + case USB_DT_DEVICE_QUALIFIER: + if (!gadget_is_dualspeed(gadget)) + break; + device_qual(cdev); + value = min_t(int, w_length, + sizeof(struct usb_qualifier_descriptor)); + break; + case USB_DT_OTHER_SPEED_CONFIG: + if (!gadget_is_dualspeed(gadget)) + break; + /* FALLTHROUGH */ + case USB_DT_CONFIG: + value = config_desc(cdev, w_value); + if (value >= 0) + value = min(w_length, (u16) value); + break; + case USB_DT_STRING: + value = get_string(cdev, req->buf, + w_index, w_value & 0xff); + if (value >= 0) + value = min(w_length, (u16) value); + break; + } + break; + + /* any number of configs can work */ + case USB_REQ_SET_CONFIGURATION: + if (ctrl->bRequestType != 0) + goto unknown; + if (gadget_is_otg(gadget)) { + if (gadget->a_hnp_support) + DBG(cdev, "HNP available\n"); + else if (gadget->a_alt_hnp_support) + DBG(cdev, "HNP on another port\n"); + else + VDBG(cdev, "HNP inactive\n"); + } + spin_lock(&cdev->lock); + value = set_config(cdev, ctrl, w_value); + spin_unlock(&cdev->lock); + break; + case USB_REQ_GET_CONFIGURATION: + if (ctrl->bRequestType != USB_DIR_IN) + goto unknown; + if (cdev->config) + *(u8 *)req->buf = cdev->config->bConfigurationValue; + else + *(u8 *)req->buf = 0; + value = min(w_length, (u16) 1); + break; + + /* function drivers must handle get/set altsetting; if there's + * no get() method, we know only altsetting zero works. + */ + case USB_REQ_SET_INTERFACE: + if (ctrl->bRequestType != USB_RECIP_INTERFACE) + goto unknown; + if (!cdev->config || w_index >= MAX_CONFIG_INTERFACES) + break; + f = cdev->config->interface[w_index]; + if (!f) + break; + if (w_value && !f->get_alt) + break; + value = f->set_alt(f, w_index, w_value); + break; + case USB_REQ_GET_INTERFACE: + if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE)) + goto unknown; + if (!cdev->config || w_index >= MAX_CONFIG_INTERFACES) + break; + f = cdev->config->interface[w_index]; + if (!f) + break; + /* lots of interfaces only need altsetting zero... */ + value = f->get_alt ? f->get_alt(f, w_index) : 0; + if (value < 0) + break; + *((u8 *)req->buf) = value; + value = min(w_length, (u16) 1); + break; + default: +unknown: + VDBG(cdev, + "non-core control req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + + /* functions always handle their interfaces ... punt other + * recipients (endpoint, other, WUSB, ...) to the current + * configuration code. + * + * REVISIT it could make sense to let the composite device + * take such requests too, if that's ever needed: to work + * in config 0, etc. + */ + if ((ctrl->bRequestType & USB_RECIP_MASK) + == USB_RECIP_INTERFACE) { + f = cdev->config->interface[w_index]; + if (f && f->setup) + value = f->setup(f, ctrl); + else + f = NULL; + } + if (value < 0 && !f) { + struct usb_configuration *c; + + c = cdev->config; + if (c && c->setup) + value = c->setup(c, ctrl); + } + + goto done; + } + + /* respond with data transfer before status phase? */ + if (value >= 0) { + req->length = value; + req->zero = value < w_length; + value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC); + if (value < 0) { + DBG(cdev, "ep_queue --> %d\n", value); + req->status = 0; + composite_setup_complete(gadget->ep0, req); + } + } + +done: + /* device either stalls (value < 0) or reports success */ + return value; +} + +static void composite_disconnect(struct usb_gadget *gadget) +{ + struct usb_composite_dev *cdev = get_gadget_data(gadget); + unsigned long flags; + + /* REVISIT: should we have config and device level + * disconnect callbacks? + */ + spin_lock_irqsave(&cdev->lock, flags); + if (cdev->config) + reset_config(cdev); + spin_unlock_irqrestore(&cdev->lock, flags); +} + +/*-------------------------------------------------------------------------*/ + +static void /* __init_or_exit */ +composite_unbind(struct usb_gadget *gadget) +{ + struct usb_composite_dev *cdev = get_gadget_data(gadget); + + /* composite_disconnect() must already have been called + * by the underlying peripheral controller driver! + * so there's no i/o concurrency that could affect the + * state protected by cdev->lock. + */ + WARN_ON(cdev->config); + + while (!list_empty(&cdev->configs)) { + struct usb_configuration *c; + + c = list_first_entry(&cdev->configs, + struct usb_configuration, list); + while (!list_empty(&c->functions)) { + struct usb_function *f; + + f = list_first_entry(&c->functions, + struct usb_function, list); + list_del(&f->list); + if (f->unbind) { + DBG(cdev, "unbind function '%s'/%p\n", + f->name, f); + f->unbind(c, f); + /* may free memory for "f" */ + } + } + list_del(&c->list); + if (c->unbind) { + DBG(cdev, "unbind config '%s'/%p\n", c->label, c); + c->unbind(c); + /* may free memory for "c" */ + } + } + if (composite->unbind) + composite->unbind(cdev); + + if (cdev->req) { + kfree(cdev->req->buf); + usb_ep_free_request(gadget->ep0, cdev->req); + } + kfree(cdev); + set_gadget_data(gadget, NULL); + composite = NULL; +} + +static void __init +string_override_one(struct usb_gadget_strings *tab, u8 id, const char *s) +{ + struct usb_string *str = tab->strings; + + for (str = tab->strings; str->s; str++) { + if (str->id == id) { + str->s = s; + return; + } + } +} + +static void __init +string_override(struct usb_gadget_strings **tab, u8 id, const char *s) +{ + while (*tab) { + string_override_one(*tab, id, s); + tab++; + } +} + +static int __init composite_bind(struct usb_gadget *gadget) +{ + struct usb_composite_dev *cdev; + int status = -ENOMEM; + + cdev = kzalloc(sizeof *cdev, GFP_KERNEL); + if (!cdev) + return status; + + spin_lock_init(&cdev->lock); + cdev->gadget = gadget; + set_gadget_data(gadget, cdev); + INIT_LIST_HEAD(&cdev->configs); + + /* preallocate control response and buffer */ + cdev->req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL); + if (!cdev->req) + goto fail; + cdev->req->buf = kmalloc(USB_BUFSIZ, GFP_KERNEL); + if (!cdev->req->buf) + goto fail; + cdev->req->complete = composite_setup_complete; + gadget->ep0->driver_data = cdev; + + cdev->bufsiz = USB_BUFSIZ; + cdev->driver = composite; + + usb_gadget_set_selfpowered(gadget); + + /* interface and string IDs start at zero via kzalloc. + * we force endpoints to start unassigned; few controller + * drivers will zero ep->driver_data. + */ + usb_ep_autoconfig_reset(cdev->gadget); + + /* composite gadget needs to assign strings for whole device (like + * serial number), register function drivers, potentially update + * power state and consumption, etc + */ + status = composite->bind(cdev); + if (status < 0) + goto fail; + + cdev->desc = *composite->dev; + cdev->desc.bMaxPacketSize0 = gadget->ep0->maxpacket; + + /* standardized runtime overrides for device ID data */ + if (idVendor) + cdev->desc.idVendor = cpu_to_le16(idVendor); + if (idProduct) + cdev->desc.idProduct = cpu_to_le16(idProduct); + if (bcdDevice) + cdev->desc.bcdDevice = cpu_to_le16(bcdDevice); + + /* strings can't be assigned before bind() allocates the + * releavnt identifiers + */ + if (cdev->desc.iManufacturer && iManufacturer) + string_override(composite->strings, + cdev->desc.iManufacturer, iManufacturer); + if (cdev->desc.iProduct && iProduct) + string_override(composite->strings, + cdev->desc.iProduct, iProduct); + if (cdev->desc.iSerialNumber && iSerialNumber) + string_override(composite->strings, + cdev->desc.iSerialNumber, iSerialNumber); + + INFO(cdev, "%s ready\n", composite->name); + return 0; + +fail: + composite_unbind(gadget); + return status; +} + +/*-------------------------------------------------------------------------*/ + +static void +composite_suspend(struct usb_gadget *gadget) +{ + struct usb_composite_dev *cdev = get_gadget_data(gadget); + struct usb_function *f; + + /* REVISIT: should we have config and device level + * suspend/resume callbacks? + */ + DBG(cdev, "suspend\n"); + if (cdev->config) { + list_for_each_entry(f, &cdev->config->functions, list) { + if (f->suspend) + f->suspend(f); + } + } +} + +static void +composite_resume(struct usb_gadget *gadget) +{ + struct usb_composite_dev *cdev = get_gadget_data(gadget); + struct usb_function *f; + + /* REVISIT: should we have config and device level + * suspend/resume callbacks? + */ + DBG(cdev, "resume\n"); + if (cdev->config) { + list_for_each_entry(f, &cdev->config->functions, list) { + if (f->resume) + f->resume(f); + } + } +} + +/*-------------------------------------------------------------------------*/ + +static struct usb_gadget_driver composite_driver = { + .speed = USB_SPEED_HIGH, + + .bind = composite_bind, + .unbind = __exit_p(composite_unbind), + + .setup = composite_setup, + .disconnect = composite_disconnect, + + .suspend = composite_suspend, + .resume = composite_resume, + + .driver = { + .owner = THIS_MODULE, + }, +}; + +/** + * usb_composite_register() - register a composite driver + * @driver: the driver to register + * Context: single threaded during gadget setup + * + * This function is used to register drivers using the composite driver + * framework. The return value is zero, or a negative errno value. + * Those values normally come from the driver's @bind method, which does + * all the work of setting up the driver to match the hardware. + * + * On successful return, the gadget is ready to respond to requests from + * the host, unless one of its components invokes usb_gadget_disconnect() + * while it was binding. That would usually be done in order to wait for + * some userspace participation. + */ +int __init usb_composite_register(struct usb_composite_driver *driver) +{ + if (!driver || !driver->dev || !driver->bind || composite) + return -EINVAL; + + if (!driver->name) + driver->name = "composite"; + composite_driver.function = (char *) driver->name; + composite_driver.driver.name = driver->name; + composite = driver; + + return usb_gadget_register_driver(&composite_driver); +} + +/** + * usb_composite_unregister() - unregister a composite driver + * @driver: the driver to unregister + * + * This function is used to unregister drivers using the composite + * driver framework. + */ +void __exit usb_composite_unregister(struct usb_composite_driver *driver) +{ + if (composite != driver) + return; + usb_gadget_unregister_driver(&composite_driver); +} diff --git a/drivers/usb/gadget/config.c b/drivers/usb/gadget/config.c index a4e54b2743f..1ca1c326392 100644 --- a/drivers/usb/gadget/config.c +++ b/drivers/usb/gadget/config.c @@ -96,7 +96,7 @@ int usb_gadget_config_buf( /* config descriptor first */ if (length < USB_DT_CONFIG_SIZE || !desc) return -EINVAL; - *cp = *config; + *cp = *config; /* then interface/endpoint/class/vendor/... */ len = usb_descriptor_fillbuf(USB_DT_CONFIG_SIZE + (u8*)buf, @@ -115,3 +115,77 @@ int usb_gadget_config_buf( return len; } +/** + * usb_copy_descriptors - copy a vector of USB descriptors + * @src: null-terminated vector to copy + * Context: initialization code, which may sleep + * + * This makes a copy of a vector of USB descriptors. Its primary use + * is to support usb_function objects which can have multiple copies, + * each needing different descriptors. Functions may have static + * tables of descriptors, which are used as templates and customized + * with identifiers (for interfaces, strings, endpoints, and more) + * as needed by a given function instance. + */ +struct usb_descriptor_header **__init +usb_copy_descriptors(struct usb_descriptor_header **src) +{ + struct usb_descriptor_header **tmp; + unsigned bytes; + unsigned n_desc; + void *mem; + struct usb_descriptor_header **ret; + + /* count descriptors and their sizes; then add vector size */ + for (bytes = 0, n_desc = 0, tmp = src; *tmp; tmp++, n_desc++) + bytes += (*tmp)->bLength; + bytes += (n_desc + 1) * sizeof(*tmp); + + mem = kmalloc(bytes, GFP_KERNEL); + if (!mem) + return NULL; + + /* fill in pointers starting at "tmp", + * to descriptors copied starting at "mem"; + * and return "ret" + */ + tmp = mem; + ret = mem; + mem += (n_desc + 1) * sizeof(*tmp); + while (*src) { + memcpy(mem, *src, (*src)->bLength); + *tmp = mem; + tmp++; + mem += (*src)->bLength; + src++; + } + *tmp = NULL; + + return ret; +} + +/** + * usb_find_endpoint - find a copy of an endpoint descriptor + * @src: original vector of descriptors + * @copy: copy of @src + * @ep: endpoint descriptor found in @src + * + * This returns the copy of the @match descriptor made for @copy. Its + * intended use is to help remembering the endpoint descriptor to use + * when enabling a given endpoint. + */ +struct usb_endpoint_descriptor *__init +usb_find_endpoint( + struct usb_descriptor_header **src, + struct usb_descriptor_header **copy, + struct usb_endpoint_descriptor *match +) +{ + while (*src) { + if (*src == (void *) match) + return (void *)*copy; + src++; + copy++; + } + return NULL; +} diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c index 42036192a03..21d1406af9e 100644 --- a/drivers/usb/gadget/dummy_hcd.c +++ b/drivers/usb/gadget/dummy_hcd.c @@ -862,7 +862,7 @@ static int dummy_udc_probe (struct platform_device *pdev) /* maybe claim OTG support, though we won't complete HNP */ dum->gadget.is_otg = (dummy_to_hcd(dum)->self.otg_port != 0); - strcpy (dum->gadget.dev.bus_id, "gadget"); + dev_set_name(&dum->gadget.dev, "gadget"); dum->gadget.dev.parent = &pdev->dev; dum->gadget.dev.release = dummy_gadget_release; rc = device_register (&dum->gadget.dev); @@ -1865,7 +1865,7 @@ static int dummy_hcd_probe(struct platform_device *pdev) dev_info(&pdev->dev, "%s, driver " DRIVER_VERSION "\n", driver_desc); - hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, pdev->dev.bus_id); + hcd = usb_create_hcd(&dummy_hcd, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) return -ENOMEM; the_controller = hcd_to_dummy (hcd); diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c index 8bdad221fa9..9462e30192d 100644 --- a/drivers/usb/gadget/epautoconf.c +++ b/drivers/usb/gadget/epautoconf.c @@ -159,6 +159,7 @@ ep_matches ( /* MATCH!! */ /* report address */ + desc->bEndpointAddress &= USB_DIR_IN; if (isdigit (ep->name [2])) { u8 num = simple_strtol (&ep->name [2], NULL, 10); desc->bEndpointAddress |= num; diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c index 4ce3950b997..d7aaaa29b1e 100644 --- a/drivers/usb/gadget/ether.c +++ b/drivers/usb/gadget/ether.c @@ -1,8 +1,9 @@ /* * ether.c -- Ethernet gadget driver, with CDC and non-CDC options * - * Copyright (C) 2003-2005 David Brownell + * Copyright (C) 2003-2005,2008 David Brownell * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger + * Copyright (C) 2008 Nokia Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -23,18 +24,9 @@ #include <linux/kernel.h> #include <linux/utsname.h> -#include <linux/device.h> -#include <linux/ctype.h> -#include <linux/etherdevice.h> -#include <linux/ethtool.h> -#include <linux/usb/ch9.h> -#include <linux/usb/cdc.h> -#include <linux/usb/gadget.h> +#include "u_ether.h" -#include "gadget_chips.h" - -/*-------------------------------------------------------------------------*/ /* * Ethernet gadget driver -- with CDC and non-CDC options @@ -46,7 +38,11 @@ * this USB-IF standard as its open-systems interoperability solution; * most host side USB stacks (except from Microsoft) support it. * - * There's some hardware that can't talk CDC. We make that hardware + * This is sometimes called "CDC ECM" (Ethernet Control Model) to support + * TLA-soup. "CDC ACM" (Abstract Control Model) is for modems, and a new + * "CDC EEM" (Ethernet Emulation Model) is starting to spread. + * + * There's some hardware that can't talk CDC ECM. We make that hardware * implement a "minimalist" vendor-agnostic CDC core: same framing, but * link-level setup only requires activating the configuration. Only the * endpoint descriptors, and product/vendor IDs, are relevant; no control @@ -64,70 +60,40 @@ * A third option is also in use. Rather than CDC Ethernet, or something * simpler, Microsoft pushes their own approach: RNDIS. The published * RNDIS specs are ambiguous and appear to be incomplete, and are also - * needlessly complex. + * needlessly complex. They borrow more from CDC ACM than CDC ECM. */ #define DRIVER_DESC "Ethernet Gadget" -#define DRIVER_VERSION "May Day 2005" - -static const char shortname [] = "ether"; -static const char driver_desc [] = DRIVER_DESC; - -#define RX_EXTRA 20 /* guard against rx overflows */ - -#include "rndis.h" +#define DRIVER_VERSION "Memorial Day 2008" -#ifndef CONFIG_USB_ETH_RNDIS -#define rndis_uninit(x) do{}while(0) -#define rndis_deregister(c) do{}while(0) -#define rndis_exit() do{}while(0) +#ifdef CONFIG_USB_ETH_RNDIS +#define PREFIX "RNDIS/" +#else +#define PREFIX "" #endif -/* CDC and RNDIS support the same host-chosen outgoing packet filters. */ -#define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \ - |USB_CDC_PACKET_TYPE_ALL_MULTICAST \ - |USB_CDC_PACKET_TYPE_PROMISCUOUS \ - |USB_CDC_PACKET_TYPE_DIRECTED) - - -/*-------------------------------------------------------------------------*/ - -struct eth_dev { - spinlock_t lock; - struct usb_gadget *gadget; - struct usb_request *req; /* for control responses */ - struct usb_request *stat_req; /* for cdc & rndis status */ - - u8 config; - struct usb_ep *in_ep, *out_ep, *status_ep; - const struct usb_endpoint_descriptor - *in, *out, *status; - - spinlock_t req_lock; - struct list_head tx_reqs, rx_reqs; - - struct net_device *net; - struct net_device_stats stats; - atomic_t tx_qlen; - - struct work_struct work; - unsigned zlp:1; - unsigned cdc:1; - unsigned rndis:1; - unsigned suspended:1; - u16 cdc_filter; - unsigned long todo; -#define WORK_RX_MEMORY 0 - int rndis_config; - u8 host_mac [ETH_ALEN]; -}; - -/* This version autoconfigures as much as possible at run-time. +/* + * This driver aims for interoperability by using CDC ECM unless + * + * can_support_ecm() + * + * returns false, in which case it supports the CDC Subset. By default, + * that returns true; most hardware has no problems with CDC ECM, that's + * a good default. Previous versions of this driver had no default; this + * version changes that, removing overhead for new controller support. * - * It also ASSUMES a self-powered device, without remote wakeup, - * although remote wakeup support would make sense. + * IF YOUR HARDWARE CAN'T SUPPORT CDC ECM, UPDATE THAT ROUTINE! */ +static inline bool has_rndis(void) +{ +#ifdef CONFIG_USB_ETH_RNDIS + return true; +#else + return false; +#endif +} + /*-------------------------------------------------------------------------*/ /* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! @@ -137,8 +103,8 @@ struct eth_dev { /* Thanks to NetChip Technologies for donating this product ID. * It's for devices with only CDC Ethernet configurations. */ -#define CDC_VENDOR_NUM 0x0525 /* NetChip */ -#define CDC_PRODUCT_NUM 0xa4a1 /* Linux-USB Ethernet Gadget */ +#define CDC_VENDOR_NUM 0x0525 /* NetChip */ +#define CDC_PRODUCT_NUM 0xa4a1 /* Linux-USB Ethernet Gadget */ /* For hardware that can't talk CDC, we use the same vendor ID that * ARM Linux has used for ethernet-over-usb, both with sa1100 and @@ -162,274 +128,9 @@ struct eth_dev { #define RNDIS_VENDOR_NUM 0x0525 /* NetChip */ #define RNDIS_PRODUCT_NUM 0xa4a2 /* Ethernet/RNDIS Gadget */ - -/* Some systems will want different product identifers published in the - * device descriptor, either numbers or strings or both. These string - * parameters are in UTF-8 (superset of ASCII's 7 bit characters). - */ - -static ushort idVendor; -module_param(idVendor, ushort, S_IRUGO); -MODULE_PARM_DESC(idVendor, "USB Vendor ID"); - -static ushort idProduct; -module_param(idProduct, ushort, S_IRUGO); -MODULE_PARM_DESC(idProduct, "USB Product ID"); - -static ushort bcdDevice; -module_param(bcdDevice, ushort, S_IRUGO); -MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)"); - -static char *iManufacturer; -module_param(iManufacturer, charp, S_IRUGO); -MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string"); - -static char *iProduct; -module_param(iProduct, charp, S_IRUGO); -MODULE_PARM_DESC(iProduct, "USB Product string"); - -static char *iSerialNumber; -module_param(iSerialNumber, charp, S_IRUGO); -MODULE_PARM_DESC(iSerialNumber, "SerialNumber"); - -/* initial value, changed by "ifconfig usb0 hw ether xx:xx:xx:xx:xx:xx" */ -static char *dev_addr; -module_param(dev_addr, charp, S_IRUGO); -MODULE_PARM_DESC(dev_addr, "Device Ethernet Address"); - -/* this address is invisible to ifconfig */ -static char *host_addr; -module_param(host_addr, charp, S_IRUGO); -MODULE_PARM_DESC(host_addr, "Host Ethernet Address"); - - -/*-------------------------------------------------------------------------*/ - -/* Include CDC support if we could run on CDC-capable hardware. */ - -#ifdef CONFIG_USB_GADGET_NET2280 -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_DUMMY_HCD -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_GOKU -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_LH7A40X -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_MQ11XX -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_OMAP -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_N9604 -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_S3C2410 -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_AT91 -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_MUSBHSFC -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_MUSB_HDRC -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_ATMEL_USBA -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_FSL_USB2 -#define DEV_CONFIG_CDC -#endif - -/* For CDC-incapable hardware, choose the simple cdc subset. - * Anything that talks bulk (without notable bugs) can do this. - */ -#ifdef CONFIG_USB_GADGET_PXA25X -#define DEV_CONFIG_SUBSET -#endif - -#ifdef CONFIG_USB_GADGET_PXA27X -#define DEV_CONFIG_SUBSET -#endif - -#ifdef CONFIG_USB_GADGET_SUPERH -#define DEV_CONFIG_SUBSET -#endif - -#ifdef CONFIG_USB_GADGET_SA1100 -/* use non-CDC for backwards compatibility */ -#define DEV_CONFIG_SUBSET -#endif - -#ifdef CONFIG_USB_GADGET_M66592 -#define DEV_CONFIG_CDC -#endif - -#ifdef CONFIG_USB_GADGET_AMD5536UDC -#define DEV_CONFIG_CDC -#endif - - -/*-------------------------------------------------------------------------*/ - -/* "main" config is either CDC, or its simple subset */ -static inline int is_cdc(struct eth_dev *dev) -{ -#if !defined(DEV_CONFIG_SUBSET) - return 1; /* only cdc possible */ -#elif !defined (DEV_CONFIG_CDC) - return 0; /* only subset possible */ -#else - return dev->cdc; /* depends on what hardware we found */ -#endif -} - -/* "secondary" RNDIS config may sometimes be activated */ -static inline int rndis_active(struct eth_dev *dev) -{ -#ifdef CONFIG_USB_ETH_RNDIS - return dev->rndis; -#else - return 0; -#endif -} - -#define subset_active(dev) (!is_cdc(dev) && !rndis_active(dev)) -#define cdc_active(dev) ( is_cdc(dev) && !rndis_active(dev)) - - - -#define DEFAULT_QLEN 2 /* double buffering by default */ - -/* peak bulk transfer bits-per-second */ -#define HS_BPS (13 * 512 * 8 * 1000 * 8) -#define FS_BPS (19 * 64 * 1 * 1000 * 8) - -#ifdef CONFIG_USB_GADGET_DUALSPEED -#define DEVSPEED USB_SPEED_HIGH - -static unsigned qmult = 5; -module_param (qmult, uint, S_IRUGO|S_IWUSR); - - -/* for dual-speed hardware, use deeper queues at highspeed */ -#define qlen(gadget) \ - (DEFAULT_QLEN*((gadget->speed == USB_SPEED_HIGH) ? qmult : 1)) - -static inline int BITRATE(struct usb_gadget *g) -{ - return (g->speed == USB_SPEED_HIGH) ? HS_BPS : FS_BPS; -} - -#else /* full speed (low speed doesn't do bulk) */ - -#define qmult 1 - -#define DEVSPEED USB_SPEED_FULL - -#define qlen(gadget) DEFAULT_QLEN - -static inline int BITRATE(struct usb_gadget *g) -{ - return FS_BPS; -} -#endif - - -/*-------------------------------------------------------------------------*/ - -#define xprintk(d,level,fmt,args...) \ - printk(level "%s: " fmt , (d)->net->name , ## args) - -#ifdef DEBUG -#undef DEBUG -#define DEBUG(dev,fmt,args...) \ - xprintk(dev , KERN_DEBUG , fmt , ## args) -#else -#define DEBUG(dev,fmt,args...) \ - do { } while (0) -#endif /* DEBUG */ - -#ifdef VERBOSE_DEBUG -#define VDEBUG DEBUG -#else -#define VDEBUG(dev,fmt,args...) \ - do { } while (0) -#endif /* DEBUG */ - -#define ERROR(dev,fmt,args...) \ - xprintk(dev , KERN_ERR , fmt , ## args) -#define WARN(dev,fmt,args...) \ - xprintk(dev , KERN_WARNING , fmt , ## args) -#define INFO(dev,fmt,args...) \ - xprintk(dev , KERN_INFO , fmt , ## args) - /*-------------------------------------------------------------------------*/ -/* USB DRIVER HOOKUP (to the hardware driver, below us), mostly - * ep0 implementation: descriptors, config management, setup(). - * also optional class-specific notification interrupt transfer. - */ - -/* - * DESCRIPTORS ... most are static, but strings and (full) configuration - * descriptors are built on demand. For now we do either full CDC, or - * our simple subset, with RNDIS as an optional second configuration. - * - * RNDIS includes some CDC ACM descriptors ... like CDC Ethernet. But - * the class descriptors match a modem (they're ignored; it's really just - * Ethernet functionality), they don't need the NOP altsetting, and the - * status transfer endpoint isn't optional. - */ - -#define STRING_MANUFACTURER 1 -#define STRING_PRODUCT 2 -#define STRING_ETHADDR 3 -#define STRING_DATA 4 -#define STRING_CONTROL 5 -#define STRING_RNDIS_CONTROL 6 -#define STRING_CDC 7 -#define STRING_SUBSET 8 -#define STRING_RNDIS 9 -#define STRING_SERIALNUMBER 10 - -/* holds our biggest descriptor (or RNDIS response) */ -#define USB_BUFSIZ 256 - -/* - * This device advertises one configuration, eth_config, unless RNDIS - * is enabled (rndis_config) on hardware supporting at least two configs. - * - * NOTE: Controllers like superh_udc should probably be able to use - * an RNDIS-only configuration. - * - * FIXME define some higher-powered configurations to make it easier - * to recharge batteries ... - */ - -#define DEV_CONFIG_VALUE 1 /* cdc or subset */ -#define DEV_RNDIS_CONFIG_VALUE 2 /* rndis; optional */ - -static struct usb_device_descriptor -device_desc = { +static struct usb_device_descriptor device_desc = { .bLength = sizeof device_desc, .bDescriptorType = USB_DT_DEVICE, @@ -438,2220 +139,234 @@ device_desc = { .bDeviceClass = USB_CLASS_COMM, .bDeviceSubClass = 0, .bDeviceProtocol = 0, + /* .bMaxPacketSize0 = f(hardware) */ + /* Vendor and product id defaults change according to what configs + * we support. (As does bNumConfigurations.) These values can + * also be overridden by module parameters. + */ .idVendor = __constant_cpu_to_le16 (CDC_VENDOR_NUM), .idProduct = __constant_cpu_to_le16 (CDC_PRODUCT_NUM), - .iManufacturer = STRING_MANUFACTURER, - .iProduct = STRING_PRODUCT, + /* .bcdDevice = f(hardware) */ + /* .iManufacturer = DYNAMIC */ + /* .iProduct = DYNAMIC */ + /* NO SERIAL NUMBER */ .bNumConfigurations = 1, }; -static struct usb_otg_descriptor -otg_descriptor = { +static struct usb_otg_descriptor otg_descriptor = { .bLength = sizeof otg_descriptor, .bDescriptorType = USB_DT_OTG, - .bmAttributes = USB_OTG_SRP, -}; - -static struct usb_config_descriptor -eth_config = { - .bLength = sizeof eth_config, - .bDescriptorType = USB_DT_CONFIG, - - /* compute wTotalLength on the fly */ - .bNumInterfaces = 2, - .bConfigurationValue = DEV_CONFIG_VALUE, - .iConfiguration = STRING_CDC, - .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = 50, -}; - -#ifdef CONFIG_USB_ETH_RNDIS -static struct usb_config_descriptor -rndis_config = { - .bLength = sizeof rndis_config, - .bDescriptorType = USB_DT_CONFIG, - - /* compute wTotalLength on the fly */ - .bNumInterfaces = 2, - .bConfigurationValue = DEV_RNDIS_CONFIG_VALUE, - .iConfiguration = STRING_RNDIS, - .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = 50, -}; -#endif - -/* - * Compared to the simple CDC subset, the full CDC Ethernet model adds - * three class descriptors, two interface descriptors, optional status - * endpoint. Both have a "data" interface and two bulk endpoints. - * There are also differences in how control requests are handled. - * - * RNDIS shares a lot with CDC-Ethernet, since it's a variant of the - * CDC-ACM (modem) spec. Unfortunately MSFT's RNDIS driver is buggy; it - * may hang or oops. Since bugfixes (or accurate specs, letting Linux - * work around those bugs) are unlikely to ever come from MSFT, you may - * wish to avoid using RNDIS. - * - * MCCI offers an alternative to RNDIS if you need to connect to Windows - * but have hardware that can't support CDC Ethernet. We add descriptors - * to present the CDC Subset as a (nonconformant) CDC MDLM variant called - * "SAFE". That borrows from both CDC Ethernet and CDC MDLM. You can - * get those drivers from MCCI, or bundled with various products. - */ - -#ifdef DEV_CONFIG_CDC -static struct usb_interface_descriptor -control_intf = { - .bLength = sizeof control_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bInterfaceNumber = 0, - /* status endpoint is optional; this may be patched later */ - .bNumEndpoints = 1, - .bInterfaceClass = USB_CLASS_COMM, - .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, - .bInterfaceProtocol = USB_CDC_PROTO_NONE, - .iInterface = STRING_CONTROL, -}; -#endif - -#ifdef CONFIG_USB_ETH_RNDIS -static const struct usb_interface_descriptor -rndis_control_intf = { - .bLength = sizeof rndis_control_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bInterfaceNumber = 0, - .bNumEndpoints = 1, - .bInterfaceClass = USB_CLASS_COMM, - .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, - .bInterfaceProtocol = USB_CDC_ACM_PROTO_VENDOR, - .iInterface = STRING_RNDIS_CONTROL, -}; -#endif - -static const struct usb_cdc_header_desc header_desc = { - .bLength = sizeof header_desc, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_HEADER_TYPE, - - .bcdCDC = __constant_cpu_to_le16 (0x0110), -}; - -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) - -static const struct usb_cdc_union_desc union_desc = { - .bLength = sizeof union_desc, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_UNION_TYPE, - - .bMasterInterface0 = 0, /* index of control interface */ - .bSlaveInterface0 = 1, /* index of DATA interface */ -}; - -#endif /* CDC || RNDIS */ - -#ifdef CONFIG_USB_ETH_RNDIS - -static const struct usb_cdc_call_mgmt_descriptor call_mgmt_descriptor = { - .bLength = sizeof call_mgmt_descriptor, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_CALL_MANAGEMENT_TYPE, - - .bmCapabilities = 0x00, - .bDataInterface = 0x01, -}; - -static const struct usb_cdc_acm_descriptor acm_descriptor = { - .bLength = sizeof acm_descriptor, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_ACM_TYPE, - - .bmCapabilities = 0x00, -}; - -#endif - -#ifndef DEV_CONFIG_CDC - -/* "SAFE" loosely follows CDC WMC MDLM, violating the spec in various - * ways: data endpoints live in the control interface, there's no data - * interface, and it's not used to talk to a cell phone radio. - */ - -static const struct usb_cdc_mdlm_desc mdlm_desc = { - .bLength = sizeof mdlm_desc, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_MDLM_TYPE, - - .bcdVersion = __constant_cpu_to_le16(0x0100), - .bGUID = { - 0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6, - 0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f, - }, -}; - -/* since "usb_cdc_mdlm_detail_desc" is a variable length structure, we - * can't really use its struct. All we do here is say that we're using - * the submode of "SAFE" which directly matches the CDC Subset. - */ -static const u8 mdlm_detail_desc[] = { - 6, - USB_DT_CS_INTERFACE, - USB_CDC_MDLM_DETAIL_TYPE, - - 0, /* "SAFE" */ - 0, /* network control capabilities (none) */ - 0, /* network data capabilities ("raw" encapsulation) */ -}; - -#endif - -static const struct usb_cdc_ether_desc ether_desc = { - .bLength = sizeof ether_desc, - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_ETHERNET_TYPE, - - /* this descriptor actually adds value, surprise! */ - .iMACAddress = STRING_ETHADDR, - .bmEthernetStatistics = __constant_cpu_to_le32 (0), /* no statistics */ - .wMaxSegmentSize = __constant_cpu_to_le16 (ETH_FRAME_LEN), - .wNumberMCFilters = __constant_cpu_to_le16 (0), - .bNumberPowerFilters = 0, -}; - - -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) - -/* include the status endpoint if we can, even where it's optional. - * use wMaxPacketSize big enough to fit CDC_NOTIFY_SPEED_CHANGE in one - * packet, to simplify cancellation; and a big transfer interval, to - * waste less bandwidth. - * - * some drivers (like Linux 2.4 cdc-ether!) "need" it to exist even - * if they ignore the connect/disconnect notifications that real aether - * can provide. more advanced cdc configurations might want to support - * encapsulated commands (vendor-specific, using control-OUT). - * - * RNDIS requires the status endpoint, since it uses that encapsulation - * mechanism for its funky RPC scheme. - */ - -#define LOG2_STATUS_INTERVAL_MSEC 5 /* 1 << 5 == 32 msec */ -#define STATUS_BYTECOUNT 16 /* 8 byte header + data */ - -static struct usb_endpoint_descriptor -fs_status_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_INT, - .wMaxPacketSize = __constant_cpu_to_le16 (STATUS_BYTECOUNT), - .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC, -}; -#endif - -#ifdef DEV_CONFIG_CDC - -/* the default data interface has no endpoints ... */ - -static const struct usb_interface_descriptor -data_nop_intf = { - .bLength = sizeof data_nop_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bInterfaceNumber = 1, - .bAlternateSetting = 0, - .bNumEndpoints = 0, - .bInterfaceClass = USB_CLASS_CDC_DATA, - .bInterfaceSubClass = 0, - .bInterfaceProtocol = 0, -}; - -/* ... but the "real" data interface has two bulk endpoints */ - -static const struct usb_interface_descriptor -data_intf = { - .bLength = sizeof data_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bInterfaceNumber = 1, - .bAlternateSetting = 1, - .bNumEndpoints = 2, - .bInterfaceClass = USB_CLASS_CDC_DATA, - .bInterfaceSubClass = 0, - .bInterfaceProtocol = 0, - .iInterface = STRING_DATA, -}; - -#endif - -#ifdef CONFIG_USB_ETH_RNDIS - -/* RNDIS doesn't activate by changing to the "real" altsetting */ - -static const struct usb_interface_descriptor -rndis_data_intf = { - .bLength = sizeof rndis_data_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bInterfaceNumber = 1, - .bAlternateSetting = 0, - .bNumEndpoints = 2, - .bInterfaceClass = USB_CLASS_CDC_DATA, - .bInterfaceSubClass = 0, - .bInterfaceProtocol = 0, - .iInterface = STRING_DATA, -}; - -#endif - -#ifdef DEV_CONFIG_SUBSET - -/* - * "Simple" CDC-subset option is a simple vendor-neutral model that most - * full speed controllers can handle: one interface, two bulk endpoints. - * - * To assist host side drivers, we fancy it up a bit, and add descriptors - * so some host side drivers will understand it as a "SAFE" variant. - */ - -static const struct usb_interface_descriptor -subset_data_intf = { - .bLength = sizeof subset_data_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bInterfaceNumber = 0, - .bAlternateSetting = 0, - .bNumEndpoints = 2, - .bInterfaceClass = USB_CLASS_COMM, - .bInterfaceSubClass = USB_CDC_SUBCLASS_MDLM, - .bInterfaceProtocol = 0, - .iInterface = STRING_DATA, -}; - -#endif /* SUBSET */ - - -static struct usb_endpoint_descriptor -fs_source_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_BULK, -}; - -static struct usb_endpoint_descriptor -fs_sink_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_OUT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, + /* REVISIT SRP-only hardware is possible, although + * it would not be called "OTG" ... + */ + .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, }; -static const struct usb_descriptor_header *fs_eth_function [11] = { +static const struct usb_descriptor_header *otg_desc[] = { (struct usb_descriptor_header *) &otg_descriptor, -#ifdef DEV_CONFIG_CDC - /* "cdc" mode descriptors */ - (struct usb_descriptor_header *) &control_intf, - (struct usb_descriptor_header *) &header_desc, - (struct usb_descriptor_header *) &union_desc, - (struct usb_descriptor_header *) ðer_desc, - /* NOTE: status endpoint may need to be removed */ - (struct usb_descriptor_header *) &fs_status_desc, - /* data interface, with altsetting */ - (struct usb_descriptor_header *) &data_nop_intf, - (struct usb_descriptor_header *) &data_intf, - (struct usb_descriptor_header *) &fs_source_desc, - (struct usb_descriptor_header *) &fs_sink_desc, NULL, -#endif /* DEV_CONFIG_CDC */ }; -static inline void __init fs_subset_descriptors(void) -{ -#ifdef DEV_CONFIG_SUBSET - /* behavior is "CDC Subset"; extra descriptors say "SAFE" */ - fs_eth_function[1] = (struct usb_descriptor_header *) &subset_data_intf; - fs_eth_function[2] = (struct usb_descriptor_header *) &header_desc; - fs_eth_function[3] = (struct usb_descriptor_header *) &mdlm_desc; - fs_eth_function[4] = (struct usb_descriptor_header *) &mdlm_detail_desc; - fs_eth_function[5] = (struct usb_descriptor_header *) ðer_desc; - fs_eth_function[6] = (struct usb_descriptor_header *) &fs_source_desc; - fs_eth_function[7] = (struct usb_descriptor_header *) &fs_sink_desc; - fs_eth_function[8] = NULL; -#else - fs_eth_function[1] = NULL; -#endif -} -#ifdef CONFIG_USB_ETH_RNDIS -static const struct usb_descriptor_header *fs_rndis_function [] = { - (struct usb_descriptor_header *) &otg_descriptor, - /* control interface matches ACM, not Ethernet */ - (struct usb_descriptor_header *) &rndis_control_intf, - (struct usb_descriptor_header *) &header_desc, - (struct usb_descriptor_header *) &call_mgmt_descriptor, - (struct usb_descriptor_header *) &acm_descriptor, - (struct usb_descriptor_header *) &union_desc, - (struct usb_descriptor_header *) &fs_status_desc, - /* data interface has no altsetting */ - (struct usb_descriptor_header *) &rndis_data_intf, - (struct usb_descriptor_header *) &fs_source_desc, - (struct usb_descriptor_header *) &fs_sink_desc, - NULL, -}; -#endif - -/* - * usb 2.0 devices need to expose both high speed and full speed - * descriptors, unless they only run at full speed. - */ - -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) -static struct usb_endpoint_descriptor -hs_status_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bmAttributes = USB_ENDPOINT_XFER_INT, - .wMaxPacketSize = __constant_cpu_to_le16 (STATUS_BYTECOUNT), - .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, -}; -#endif /* DEV_CONFIG_CDC */ - -static struct usb_endpoint_descriptor -hs_source_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = __constant_cpu_to_le16 (512), -}; - -static struct usb_endpoint_descriptor -hs_sink_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = __constant_cpu_to_le16 (512), -}; +/* string IDs are assigned dynamically */ -static struct usb_qualifier_descriptor -dev_qualifier = { - .bLength = sizeof dev_qualifier, - .bDescriptorType = USB_DT_DEVICE_QUALIFIER, +#define STRING_MANUFACTURER_IDX 0 +#define STRING_PRODUCT_IDX 1 - .bcdUSB = __constant_cpu_to_le16 (0x0200), - .bDeviceClass = USB_CLASS_COMM, +static char manufacturer[50]; - .bNumConfigurations = 1, +static struct usb_string strings_dev[] = { + [STRING_MANUFACTURER_IDX].s = manufacturer, + [STRING_PRODUCT_IDX].s = PREFIX DRIVER_DESC, + { } /* end of list */ }; -static const struct usb_descriptor_header *hs_eth_function [11] = { - (struct usb_descriptor_header *) &otg_descriptor, -#ifdef DEV_CONFIG_CDC - /* "cdc" mode descriptors */ - (struct usb_descriptor_header *) &control_intf, - (struct usb_descriptor_header *) &header_desc, - (struct usb_descriptor_header *) &union_desc, - (struct usb_descriptor_header *) ðer_desc, - /* NOTE: status endpoint may need to be removed */ - (struct usb_descriptor_header *) &hs_status_desc, - /* data interface, with altsetting */ - (struct usb_descriptor_header *) &data_nop_intf, - (struct usb_descriptor_header *) &data_intf, - (struct usb_descriptor_header *) &hs_source_desc, - (struct usb_descriptor_header *) &hs_sink_desc, - NULL, -#endif /* DEV_CONFIG_CDC */ +static struct usb_gadget_strings stringtab_dev = { + .language = 0x0409, /* en-us */ + .strings = strings_dev, }; -static inline void __init hs_subset_descriptors(void) -{ -#ifdef DEV_CONFIG_SUBSET - /* behavior is "CDC Subset"; extra descriptors say "SAFE" */ - hs_eth_function[1] = (struct usb_descriptor_header *) &subset_data_intf; - hs_eth_function[2] = (struct usb_descriptor_header *) &header_desc; - hs_eth_function[3] = (struct usb_descriptor_header *) &mdlm_desc; - hs_eth_function[4] = (struct usb_descriptor_header *) &mdlm_detail_desc; - hs_eth_function[5] = (struct usb_descriptor_header *) ðer_desc; - hs_eth_function[6] = (struct usb_descriptor_header *) &hs_source_desc; - hs_eth_function[7] = (struct usb_descriptor_header *) &hs_sink_desc; - hs_eth_function[8] = NULL; -#else - hs_eth_function[1] = NULL; -#endif -} - -#ifdef CONFIG_USB_ETH_RNDIS -static const struct usb_descriptor_header *hs_rndis_function [] = { - (struct usb_descriptor_header *) &otg_descriptor, - /* control interface matches ACM, not Ethernet */ - (struct usb_descriptor_header *) &rndis_control_intf, - (struct usb_descriptor_header *) &header_desc, - (struct usb_descriptor_header *) &call_mgmt_descriptor, - (struct usb_descriptor_header *) &acm_descriptor, - (struct usb_descriptor_header *) &union_desc, - (struct usb_descriptor_header *) &hs_status_desc, - /* data interface has no altsetting */ - (struct usb_descriptor_header *) &rndis_data_intf, - (struct usb_descriptor_header *) &hs_source_desc, - (struct usb_descriptor_header *) &hs_sink_desc, +static struct usb_gadget_strings *dev_strings[] = { + &stringtab_dev, NULL, }; -#endif - - -/* maxpacket and other transfer characteristics vary by speed. */ -static inline struct usb_endpoint_descriptor * -ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs, - struct usb_endpoint_descriptor *fs) -{ - if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) - return hs; - return fs; -} +static u8 hostaddr[ETH_ALEN]; /*-------------------------------------------------------------------------*/ -/* descriptors that are built on-demand */ - -static char manufacturer [50]; -static char product_desc [40] = DRIVER_DESC; -static char serial_number [20]; - -/* address that the host will use ... usually assigned at random */ -static char ethaddr [2 * ETH_ALEN + 1]; - -/* static strings, in UTF-8 */ -static struct usb_string strings [] = { - { STRING_MANUFACTURER, manufacturer, }, - { STRING_PRODUCT, product_desc, }, - { STRING_SERIALNUMBER, serial_number, }, - { STRING_DATA, "Ethernet Data", }, - { STRING_ETHADDR, ethaddr, }, -#ifdef DEV_CONFIG_CDC - { STRING_CDC, "CDC Ethernet", }, - { STRING_CONTROL, "CDC Communications Control", }, -#endif -#ifdef DEV_CONFIG_SUBSET - { STRING_SUBSET, "CDC Ethernet Subset", }, -#endif -#ifdef CONFIG_USB_ETH_RNDIS - { STRING_RNDIS, "RNDIS", }, - { STRING_RNDIS_CONTROL, "RNDIS Communications Control", }, -#endif - { } /* end of list */ -}; - -static struct usb_gadget_strings stringtab = { - .language = 0x0409, /* en-us */ - .strings = strings, -}; - /* - * one config, two interfaces: control, data. - * complications: class descriptors, and an altsetting. - */ -static int -config_buf(struct usb_gadget *g, u8 *buf, u8 type, unsigned index, int is_otg) -{ - int len; - const struct usb_config_descriptor *config; - const struct usb_descriptor_header **function; - int hs = 0; - - if (gadget_is_dualspeed(g)) { - hs = (g->speed == USB_SPEED_HIGH); - if (type == USB_DT_OTHER_SPEED_CONFIG) - hs = !hs; - } -#define which_fn(t) (hs ? hs_ ## t ## _function : fs_ ## t ## _function) - - if (index >= device_desc.bNumConfigurations) - return -EINVAL; - -#ifdef CONFIG_USB_ETH_RNDIS - /* list the RNDIS config first, to make Microsoft's drivers - * happy. DOCSIS 1.0 needs this too. - */ - if (device_desc.bNumConfigurations == 2 && index == 0) { - config = &rndis_config; - function = which_fn (rndis); - } else -#endif - { - config = ð_config; - function = which_fn (eth); - } - - /* for now, don't advertise srp-only devices */ - if (!is_otg) - function++; - - len = usb_gadget_config_buf (config, buf, USB_BUFSIZ, function); - if (len < 0) - return len; - ((struct usb_config_descriptor *) buf)->bDescriptorType = type; - return len; -} - -/*-------------------------------------------------------------------------*/ - -static void eth_start (struct eth_dev *dev, gfp_t gfp_flags); -static int alloc_requests (struct eth_dev *dev, unsigned n, gfp_t gfp_flags); - -static int -set_ether_config (struct eth_dev *dev, gfp_t gfp_flags) -{ - int result = 0; - struct usb_gadget *gadget = dev->gadget; - -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) - /* status endpoint used for RNDIS and (optionally) CDC */ - if (!subset_active(dev) && dev->status_ep) { - dev->status = ep_desc (gadget, &hs_status_desc, - &fs_status_desc); - dev->status_ep->driver_data = dev; - - result = usb_ep_enable (dev->status_ep, dev->status); - if (result != 0) { - DEBUG (dev, "enable %s --> %d\n", - dev->status_ep->name, result); - goto done; - } - } -#endif - - dev->in = ep_desc(gadget, &hs_source_desc, &fs_source_desc); - dev->in_ep->driver_data = dev; - - dev->out = ep_desc(gadget, &hs_sink_desc, &fs_sink_desc); - dev->out_ep->driver_data = dev; - - /* With CDC, the host isn't allowed to use these two data - * endpoints in the default altsetting for the interface. - * so we don't activate them yet. Reset from SET_INTERFACE. - * - * Strictly speaking RNDIS should work the same: activation is - * a side effect of setting a packet filter. Deactivation is - * from REMOTE_NDIS_HALT_MSG, reset from REMOTE_NDIS_RESET_MSG. - */ - if (!cdc_active(dev)) { - result = usb_ep_enable (dev->in_ep, dev->in); - if (result != 0) { - DEBUG(dev, "enable %s --> %d\n", - dev->in_ep->name, result); - goto done; - } - - result = usb_ep_enable (dev->out_ep, dev->out); - if (result != 0) { - DEBUG (dev, "enable %s --> %d\n", - dev->out_ep->name, result); - goto done; - } - } - -done: - if (result == 0) - result = alloc_requests (dev, qlen (gadget), gfp_flags); - - /* on error, disable any endpoints */ - if (result < 0) { - if (!subset_active(dev) && dev->status_ep) - (void) usb_ep_disable (dev->status_ep); - dev->status = NULL; - (void) usb_ep_disable (dev->in_ep); - (void) usb_ep_disable (dev->out_ep); - dev->in = NULL; - dev->out = NULL; - } - - /* activate non-CDC configs right away - * this isn't strictly according to the RNDIS spec - */ - else if (!cdc_active (dev)) { - netif_carrier_on (dev->net); - if (netif_running (dev->net)) { - spin_unlock (&dev->lock); - eth_start (dev, GFP_ATOMIC); - spin_lock (&dev->lock); - } - } - - if (result == 0) - DEBUG (dev, "qlen %d\n", qlen (gadget)); - - /* caller is responsible for cleanup on error */ - return result; -} - -static void eth_reset_config (struct eth_dev *dev) -{ - struct usb_request *req; - - if (dev->config == 0) - return; - - DEBUG (dev, "%s\n", __func__); - - netif_stop_queue (dev->net); - netif_carrier_off (dev->net); - rndis_uninit(dev->rndis_config); - - /* disable endpoints, forcing (synchronous) completion of - * pending i/o. then free the requests. - */ - if (dev->in) { - usb_ep_disable (dev->in_ep); - spin_lock(&dev->req_lock); - while (likely (!list_empty (&dev->tx_reqs))) { - req = container_of (dev->tx_reqs.next, - struct usb_request, list); - list_del (&req->list); - - spin_unlock(&dev->req_lock); - usb_ep_free_request (dev->in_ep, req); - spin_lock(&dev->req_lock); - } - spin_unlock(&dev->req_lock); - } - if (dev->out) { - usb_ep_disable (dev->out_ep); - spin_lock(&dev->req_lock); - while (likely (!list_empty (&dev->rx_reqs))) { - req = container_of (dev->rx_reqs.next, - struct usb_request, list); - list_del (&req->list); - - spin_unlock(&dev->req_lock); - usb_ep_free_request (dev->out_ep, req); - spin_lock(&dev->req_lock); - } - spin_unlock(&dev->req_lock); - } - - if (dev->status) { - usb_ep_disable (dev->status_ep); - } - dev->rndis = 0; - dev->cdc_filter = 0; - dev->config = 0; -} - -/* change our operational config. must agree with the code - * that returns config descriptors, and altsetting code. + * We may not have an RNDIS configuration, but if we do it needs to be + * the first one present. That's to make Microsoft's drivers happy, + * and to follow DOCSIS 1.0 (cable modem standard). */ -static int -eth_set_config (struct eth_dev *dev, unsigned number, gfp_t gfp_flags) +static int __init rndis_do_config(struct usb_configuration *c) { - int result = 0; - struct usb_gadget *gadget = dev->gadget; - - if (gadget_is_sa1100 (gadget) - && dev->config - && atomic_read (&dev->tx_qlen) != 0) { - /* tx fifo is full, but we can't clear it...*/ - INFO (dev, "can't change configurations\n"); - return -ESPIPE; - } - eth_reset_config (dev); - - switch (number) { - case DEV_CONFIG_VALUE: - result = set_ether_config (dev, gfp_flags); - break; -#ifdef CONFIG_USB_ETH_RNDIS - case DEV_RNDIS_CONFIG_VALUE: - dev->rndis = 1; - result = set_ether_config (dev, gfp_flags); - break; -#endif - default: - result = -EINVAL; - /* FALL THROUGH */ - case 0: - break; - } - - if (result) { - if (number) - eth_reset_config (dev); - usb_gadget_vbus_draw(dev->gadget, - gadget_is_otg(dev->gadget) ? 8 : 100); - } else { - char *speed; - unsigned power; - - power = 2 * eth_config.bMaxPower; - usb_gadget_vbus_draw(dev->gadget, power); + /* FIXME alloc iConfiguration string, set it in c->strings */ - switch (gadget->speed) { - case USB_SPEED_FULL: speed = "full"; break; -#ifdef CONFIG_USB_GADGET_DUALSPEED - case USB_SPEED_HIGH: speed = "high"; break; -#endif - default: speed = "?"; break; - } - - dev->config = number; - INFO (dev, "%s speed config #%d: %d mA, %s, using %s\n", - speed, number, power, driver_desc, - rndis_active(dev) - ? "RNDIS" - : (cdc_active(dev) - ? "CDC Ethernet" - : "CDC Ethernet Subset")); + if (gadget_is_otg(c->cdev->gadget)) { + c->descriptors = otg_desc; + c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - return result; -} - -/*-------------------------------------------------------------------------*/ - -#ifdef DEV_CONFIG_CDC -/* The interrupt endpoint is used in CDC networking models (Ethernet, ATM) - * only to notify the host about link status changes (which we support) or - * report completion of some encapsulated command (as used in RNDIS). Since - * we want this CDC Ethernet code to be vendor-neutral, we don't use that - * command mechanism; and only one status request is ever queued. - */ - -static void eth_status_complete (struct usb_ep *ep, struct usb_request *req) -{ - struct usb_cdc_notification *event = req->buf; - int value = req->status; - struct eth_dev *dev = ep->driver_data; - - /* issue the second notification if host reads the first */ - if (event->bNotificationType == USB_CDC_NOTIFY_NETWORK_CONNECTION - && value == 0) { - __le32 *data = req->buf + sizeof *event; - - event->bmRequestType = 0xA1; - event->bNotificationType = USB_CDC_NOTIFY_SPEED_CHANGE; - event->wValue = __constant_cpu_to_le16 (0); - event->wIndex = __constant_cpu_to_le16 (1); - event->wLength = __constant_cpu_to_le16 (8); - - /* SPEED_CHANGE data is up/down speeds in bits/sec */ - data [0] = data [1] = cpu_to_le32 (BITRATE (dev->gadget)); - - req->length = STATUS_BYTECOUNT; - value = usb_ep_queue (ep, req, GFP_ATOMIC); - DEBUG (dev, "send SPEED_CHANGE --> %d\n", value); - if (value == 0) - return; - } else if (value != -ECONNRESET) - DEBUG (dev, "event %02x --> %d\n", - event->bNotificationType, value); - req->context = NULL; + return rndis_bind_config(c, hostaddr); } -static void issue_start_status (struct eth_dev *dev) -{ - struct usb_request *req = dev->stat_req; - struct usb_cdc_notification *event; - int value; - - DEBUG (dev, "%s, flush old status first\n", __func__); - - /* flush old status - * - * FIXME ugly idiom, maybe we'd be better with just - * a "cancel the whole queue" primitive since any - * unlink-one primitive has way too many error modes. - * here, we "know" toggle is already clear... - * - * FIXME iff req->context != null just dequeue it - */ - usb_ep_disable (dev->status_ep); - usb_ep_enable (dev->status_ep, dev->status); - - /* 3.8.1 says to issue first NETWORK_CONNECTION, then - * a SPEED_CHANGE. could be useful in some configs. - */ - event = req->buf; - event->bmRequestType = 0xA1; - event->bNotificationType = USB_CDC_NOTIFY_NETWORK_CONNECTION; - event->wValue = __constant_cpu_to_le16 (1); /* connected */ - event->wIndex = __constant_cpu_to_le16 (1); - event->wLength = 0; - - req->length = sizeof *event; - req->complete = eth_status_complete; - req->context = dev; - - value = usb_ep_queue (dev->status_ep, req, GFP_ATOMIC); - if (value < 0) - DEBUG (dev, "status buf queue --> %d\n", value); -} - -#endif +static struct usb_configuration rndis_config_driver = { + .label = "RNDIS", + .bind = rndis_do_config, + .bConfigurationValue = 2, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + .bMaxPower = 1, /* 2 mA, minimal */ +}; /*-------------------------------------------------------------------------*/ -static void eth_setup_complete (struct usb_ep *ep, struct usb_request *req) -{ - if (req->status || req->actual != req->length) - DEBUG ((struct eth_dev *) ep->driver_data, - "setup complete --> %d, %d/%d\n", - req->status, req->actual, req->length); -} - -#ifdef CONFIG_USB_ETH_RNDIS - -static void rndis_response_complete (struct usb_ep *ep, struct usb_request *req) -{ - if (req->status || req->actual != req->length) - DEBUG ((struct eth_dev *) ep->driver_data, - "rndis response complete --> %d, %d/%d\n", - req->status, req->actual, req->length); - - /* done sending after USB_CDC_GET_ENCAPSULATED_RESPONSE */ -} - -static void rndis_command_complete (struct usb_ep *ep, struct usb_request *req) -{ - struct eth_dev *dev = ep->driver_data; - int status; - - /* received RNDIS command from USB_CDC_SEND_ENCAPSULATED_COMMAND */ - spin_lock(&dev->lock); - status = rndis_msg_parser (dev->rndis_config, (u8 *) req->buf); - if (status < 0) - ERROR(dev, "%s: rndis parse error %d\n", __func__, status); - spin_unlock(&dev->lock); -} - -#endif /* RNDIS */ - /* - * The setup() callback implements all the ep0 functionality that's not - * handled lower down. CDC has a number of less-common features: - * - * - two interfaces: control, and ethernet data - * - Ethernet data interface has two altsettings: default, and active - * - class-specific descriptors for the control interface - * - class-specific control requests + * We _always_ have an ECM or CDC Subset configuration. */ -static int -eth_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) +static int __init eth_do_config(struct usb_configuration *c) { - struct eth_dev *dev = get_gadget_data (gadget); - struct usb_request *req = dev->req; - int value = -EOPNOTSUPP; - u16 wIndex = le16_to_cpu(ctrl->wIndex); - u16 wValue = le16_to_cpu(ctrl->wValue); - u16 wLength = le16_to_cpu(ctrl->wLength); - - /* descriptors just go into the pre-allocated ep0 buffer, - * while config change events may enable network traffic. - */ - req->complete = eth_setup_complete; - switch (ctrl->bRequest) { - - case USB_REQ_GET_DESCRIPTOR: - if (ctrl->bRequestType != USB_DIR_IN) - break; - switch (wValue >> 8) { - - case USB_DT_DEVICE: - value = min (wLength, (u16) sizeof device_desc); - memcpy (req->buf, &device_desc, value); - break; - case USB_DT_DEVICE_QUALIFIER: - if (!gadget_is_dualspeed(gadget)) - break; - value = min (wLength, (u16) sizeof dev_qualifier); - memcpy (req->buf, &dev_qualifier, value); - break; - - case USB_DT_OTHER_SPEED_CONFIG: - if (!gadget_is_dualspeed(gadget)) - break; - // FALLTHROUGH - case USB_DT_CONFIG: - value = config_buf(gadget, req->buf, - wValue >> 8, - wValue & 0xff, - gadget_is_otg(gadget)); - if (value >= 0) - value = min (wLength, (u16) value); - break; - - case USB_DT_STRING: - value = usb_gadget_get_string (&stringtab, - wValue & 0xff, req->buf); - if (value >= 0) - value = min (wLength, (u16) value); - break; - } - break; - - case USB_REQ_SET_CONFIGURATION: - if (ctrl->bRequestType != 0) - break; - if (gadget->a_hnp_support) - DEBUG (dev, "HNP available\n"); - else if (gadget->a_alt_hnp_support) - DEBUG (dev, "HNP needs a different root port\n"); - spin_lock (&dev->lock); - value = eth_set_config (dev, wValue, GFP_ATOMIC); - spin_unlock (&dev->lock); - break; - case USB_REQ_GET_CONFIGURATION: - if (ctrl->bRequestType != USB_DIR_IN) - break; - *(u8 *)req->buf = dev->config; - value = min (wLength, (u16) 1); - break; - - case USB_REQ_SET_INTERFACE: - if (ctrl->bRequestType != USB_RECIP_INTERFACE - || !dev->config - || wIndex > 1) - break; - if (!cdc_active(dev) && wIndex != 0) - break; - spin_lock (&dev->lock); - - /* PXA hardware partially handles SET_INTERFACE; - * we need to kluge around that interference. - */ - if (gadget_is_pxa (gadget)) { - value = eth_set_config (dev, DEV_CONFIG_VALUE, - GFP_ATOMIC); - goto done_set_intf; - } - -#ifdef DEV_CONFIG_CDC - switch (wIndex) { - case 0: /* control/master intf */ - if (wValue != 0) - break; - if (dev->status) { - usb_ep_disable (dev->status_ep); - usb_ep_enable (dev->status_ep, dev->status); - } - value = 0; - break; - case 1: /* data intf */ - if (wValue > 1) - break; - usb_ep_disable (dev->in_ep); - usb_ep_disable (dev->out_ep); - - /* CDC requires the data transfers not be done from - * the default interface setting ... also, setting - * the non-default interface resets filters etc. - */ - if (wValue == 1) { - if (!cdc_active (dev)) - break; - usb_ep_enable (dev->in_ep, dev->in); - usb_ep_enable (dev->out_ep, dev->out); - dev->cdc_filter = DEFAULT_FILTER; - netif_carrier_on (dev->net); - if (dev->status) - issue_start_status (dev); - if (netif_running (dev->net)) { - spin_unlock (&dev->lock); - eth_start (dev, GFP_ATOMIC); - spin_lock (&dev->lock); - } - } else { - netif_stop_queue (dev->net); - netif_carrier_off (dev->net); - } - value = 0; - break; - } -#else - /* FIXME this is wrong, as is the assumption that - * all non-PXA hardware talks real CDC ... - */ - dev_warn (&gadget->dev, "set_interface ignored!\n"); -#endif /* DEV_CONFIG_CDC */ - -done_set_intf: - spin_unlock (&dev->lock); - break; - case USB_REQ_GET_INTERFACE: - if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE) - || !dev->config - || wIndex > 1) - break; - if (!(cdc_active(dev) || rndis_active(dev)) && wIndex != 0) - break; - - /* for CDC, iff carrier is on, data interface is active. */ - if (rndis_active(dev) || wIndex != 1) - *(u8 *)req->buf = 0; - else - *(u8 *)req->buf = netif_carrier_ok (dev->net) ? 1 : 0; - value = min (wLength, (u16) 1); - break; - -#ifdef DEV_CONFIG_CDC - case USB_CDC_SET_ETHERNET_PACKET_FILTER: - /* see 6.2.30: no data, wIndex = interface, - * wValue = packet filter bitmap - */ - if (ctrl->bRequestType != (USB_TYPE_CLASS|USB_RECIP_INTERFACE) - || !cdc_active(dev) - || wLength != 0 - || wIndex > 1) - break; - DEBUG (dev, "packet filter %02x\n", wValue); - dev->cdc_filter = wValue; - value = 0; - break; - - /* and potentially: - * case USB_CDC_SET_ETHERNET_MULTICAST_FILTERS: - * case USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER: - * case USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER: - * case USB_CDC_GET_ETHERNET_STATISTIC: - */ - -#endif /* DEV_CONFIG_CDC */ + /* FIXME alloc iConfiguration string, set it in c->strings */ -#ifdef CONFIG_USB_ETH_RNDIS - /* RNDIS uses the CDC command encapsulation mechanism to implement - * an RPC scheme, with much getting/setting of attributes by OID. - */ - case USB_CDC_SEND_ENCAPSULATED_COMMAND: - if (ctrl->bRequestType != (USB_TYPE_CLASS|USB_RECIP_INTERFACE) - || !rndis_active(dev) - || wLength > USB_BUFSIZ - || wValue - || rndis_control_intf.bInterfaceNumber - != wIndex) - break; - /* read the request, then process it */ - value = wLength; - req->complete = rndis_command_complete; - /* later, rndis_control_ack () sends a notification */ - break; - - case USB_CDC_GET_ENCAPSULATED_RESPONSE: - if ((USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE) - == ctrl->bRequestType - && rndis_active(dev) - // && wLength >= 0x0400 - && !wValue - && rndis_control_intf.bInterfaceNumber - == wIndex) { - u8 *buf; - u32 n; - - /* return the result */ - buf = rndis_get_next_response(dev->rndis_config, &n); - if (buf) { - memcpy(req->buf, buf, n); - req->complete = rndis_response_complete; - rndis_free_response(dev->rndis_config, buf); - value = n; - } - /* else stalls ... spec says to avoid that */ - } - break; -#endif /* RNDIS */ - - default: - VDEBUG (dev, - "unknown control req%02x.%02x v%04x i%04x l%d\n", - ctrl->bRequestType, ctrl->bRequest, - wValue, wIndex, wLength); + if (gadget_is_otg(c->cdev->gadget)) { + c->descriptors = otg_desc; + c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - /* respond with data transfer before status phase? */ - if (value >= 0) { - req->length = value; - req->zero = value < wLength - && (value % gadget->ep0->maxpacket) == 0; - value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC); - if (value < 0) { - DEBUG (dev, "ep_queue --> %d\n", value); - req->status = 0; - eth_setup_complete (gadget->ep0, req); - } - } - - /* host either stalls (value < 0) or reports success */ - return value; -} - -static void -eth_disconnect (struct usb_gadget *gadget) -{ - struct eth_dev *dev = get_gadget_data (gadget); - unsigned long flags; - - spin_lock_irqsave (&dev->lock, flags); - netif_stop_queue (dev->net); - netif_carrier_off (dev->net); - eth_reset_config (dev); - spin_unlock_irqrestore (&dev->lock, flags); - - /* FIXME RNDIS should enter RNDIS_UNINITIALIZED */ - - /* next we may get setup() calls to enumerate new connections; - * or an unbind() during shutdown (including removing module). - */ -} - -/*-------------------------------------------------------------------------*/ - -/* NETWORK DRIVER HOOKUP (to the layer above this driver) */ - -static int eth_change_mtu (struct net_device *net, int new_mtu) -{ - struct eth_dev *dev = netdev_priv(net); - - if (dev->rndis) - return -EBUSY; - - if (new_mtu <= ETH_HLEN || new_mtu > ETH_FRAME_LEN) - return -ERANGE; - /* no zero-length packet read wanted after mtu-sized packets */ - if (((new_mtu + sizeof (struct ethhdr)) % dev->in_ep->maxpacket) == 0) - return -EDOM; - net->mtu = new_mtu; - return 0; -} - -static struct net_device_stats *eth_get_stats (struct net_device *net) -{ - return &((struct eth_dev *)netdev_priv(net))->stats; -} - -static void eth_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *p) -{ - struct eth_dev *dev = netdev_priv(net); - strlcpy(p->driver, shortname, sizeof p->driver); - strlcpy(p->version, DRIVER_VERSION, sizeof p->version); - strlcpy(p->fw_version, dev->gadget->name, sizeof p->fw_version); - strlcpy (p->bus_info, dev->gadget->dev.bus_id, sizeof p->bus_info); -} - -static u32 eth_get_link(struct net_device *net) -{ - struct eth_dev *dev = netdev_priv(net); - return dev->gadget->speed != USB_SPEED_UNKNOWN; -} - -static struct ethtool_ops ops = { - .get_drvinfo = eth_get_drvinfo, - .get_link = eth_get_link -}; - -static void defer_kevent (struct eth_dev *dev, int flag) -{ - if (test_and_set_bit (flag, &dev->todo)) - return; - if (!schedule_work (&dev->work)) - ERROR (dev, "kevent %d may have been dropped\n", flag); + if (can_support_ecm(c->cdev->gadget)) + return ecm_bind_config(c, hostaddr); else - DEBUG (dev, "kevent %d scheduled\n", flag); -} - -static void rx_complete (struct usb_ep *ep, struct usb_request *req); - -static int -rx_submit (struct eth_dev *dev, struct usb_request *req, gfp_t gfp_flags) -{ - struct sk_buff *skb; - int retval = -ENOMEM; - size_t size; - - /* Padding up to RX_EXTRA handles minor disagreements with host. - * Normally we use the USB "terminate on short read" convention; - * so allow up to (N*maxpacket), since that memory is normally - * already allocated. Some hardware doesn't deal well with short - * reads (e.g. DMA must be N*maxpacket), so for now don't trim a - * byte off the end (to force hardware errors on overflow). - * - * RNDIS uses internal framing, and explicitly allows senders to - * pad to end-of-packet. That's potentially nice for speed, - * but means receivers can't recover synch on their own. - */ - size = (sizeof (struct ethhdr) + dev->net->mtu + RX_EXTRA); - size += dev->out_ep->maxpacket - 1; - if (rndis_active(dev)) - size += sizeof (struct rndis_packet_msg_type); - size -= size % dev->out_ep->maxpacket; - - skb = alloc_skb(size + NET_IP_ALIGN, gfp_flags); - if (skb == NULL) { - DEBUG (dev, "no rx skb\n"); - goto enomem; - } - - /* Some platforms perform better when IP packets are aligned, - * but on at least one, checksumming fails otherwise. Note: - * RNDIS headers involve variable numbers of LE32 values. - */ - skb_reserve(skb, NET_IP_ALIGN); - - req->buf = skb->data; - req->length = size; - req->complete = rx_complete; - req->context = skb; - - retval = usb_ep_queue (dev->out_ep, req, gfp_flags); - if (retval == -ENOMEM) -enomem: - defer_kevent (dev, WORK_RX_MEMORY); - if (retval) { - DEBUG (dev, "rx submit --> %d\n", retval); - if (skb) - dev_kfree_skb_any(skb); - spin_lock(&dev->req_lock); - list_add (&req->list, &dev->rx_reqs); - spin_unlock(&dev->req_lock); - } - return retval; -} - -static void rx_complete (struct usb_ep *ep, struct usb_request *req) -{ - struct sk_buff *skb = req->context; - struct eth_dev *dev = ep->driver_data; - int status = req->status; - - switch (status) { - - /* normal completion */ - case 0: - skb_put (skb, req->actual); - /* we know MaxPacketsPerTransfer == 1 here */ - if (rndis_active(dev)) - status = rndis_rm_hdr (skb); - if (status < 0 - || ETH_HLEN > skb->len - || skb->len > ETH_FRAME_LEN) { - dev->stats.rx_errors++; - dev->stats.rx_length_errors++; - DEBUG (dev, "rx length %d\n", skb->len); - break; - } - - skb->protocol = eth_type_trans (skb, dev->net); - dev->stats.rx_packets++; - dev->stats.rx_bytes += skb->len; - - /* no buffer copies needed, unless hardware can't - * use skb buffers. - */ - status = netif_rx (skb); - skb = NULL; - break; - - /* software-driven interface shutdown */ - case -ECONNRESET: // unlink - case -ESHUTDOWN: // disconnect etc - VDEBUG (dev, "rx shutdown, code %d\n", status); - goto quiesce; - - /* for hardware automagic (such as pxa) */ - case -ECONNABORTED: // endpoint reset - DEBUG (dev, "rx %s reset\n", ep->name); - defer_kevent (dev, WORK_RX_MEMORY); -quiesce: - dev_kfree_skb_any (skb); - goto clean; - - /* data overrun */ - case -EOVERFLOW: - dev->stats.rx_over_errors++; - // FALLTHROUGH - - default: - dev->stats.rx_errors++; - DEBUG (dev, "rx status %d\n", status); - break; - } - - if (skb) - dev_kfree_skb_any (skb); - if (!netif_running (dev->net)) { -clean: - spin_lock(&dev->req_lock); - list_add (&req->list, &dev->rx_reqs); - spin_unlock(&dev->req_lock); - req = NULL; - } - if (req) - rx_submit (dev, req, GFP_ATOMIC); -} - -static int prealloc (struct list_head *list, struct usb_ep *ep, - unsigned n, gfp_t gfp_flags) -{ - unsigned i; - struct usb_request *req; - - if (!n) - return -ENOMEM; - - /* queue/recycle up to N requests */ - i = n; - list_for_each_entry (req, list, list) { - if (i-- == 0) - goto extra; - } - while (i--) { - req = usb_ep_alloc_request (ep, gfp_flags); - if (!req) - return list_empty (list) ? -ENOMEM : 0; - list_add (&req->list, list); - } - return 0; - -extra: - /* free extras */ - for (;;) { - struct list_head *next; - - next = req->list.next; - list_del (&req->list); - usb_ep_free_request (ep, req); - - if (next == list) - break; - - req = container_of (next, struct usb_request, list); - } - return 0; -} - -static int alloc_requests (struct eth_dev *dev, unsigned n, gfp_t gfp_flags) -{ - int status; - - spin_lock(&dev->req_lock); - status = prealloc (&dev->tx_reqs, dev->in_ep, n, gfp_flags); - if (status < 0) - goto fail; - status = prealloc (&dev->rx_reqs, dev->out_ep, n, gfp_flags); - if (status < 0) - goto fail; - goto done; -fail: - DEBUG (dev, "can't alloc requests\n"); -done: - spin_unlock(&dev->req_lock); - return status; -} - -static void rx_fill (struct eth_dev *dev, gfp_t gfp_flags) -{ - struct usb_request *req; - unsigned long flags; - - /* fill unused rxq slots with some skb */ - spin_lock_irqsave(&dev->req_lock, flags); - while (!list_empty (&dev->rx_reqs)) { - req = container_of (dev->rx_reqs.next, - struct usb_request, list); - list_del_init (&req->list); - spin_unlock_irqrestore(&dev->req_lock, flags); - - if (rx_submit (dev, req, gfp_flags) < 0) { - defer_kevent (dev, WORK_RX_MEMORY); - return; - } - - spin_lock_irqsave(&dev->req_lock, flags); - } - spin_unlock_irqrestore(&dev->req_lock, flags); -} - -static void eth_work (struct work_struct *work) -{ - struct eth_dev *dev = container_of(work, struct eth_dev, work); - - if (test_and_clear_bit (WORK_RX_MEMORY, &dev->todo)) { - if (netif_running (dev->net)) - rx_fill (dev, GFP_KERNEL); - } - - if (dev->todo) - DEBUG (dev, "work done, flags = 0x%lx\n", dev->todo); -} - -static void tx_complete (struct usb_ep *ep, struct usb_request *req) -{ - struct sk_buff *skb = req->context; - struct eth_dev *dev = ep->driver_data; - - switch (req->status) { - default: - dev->stats.tx_errors++; - VDEBUG (dev, "tx err %d\n", req->status); - /* FALLTHROUGH */ - case -ECONNRESET: // unlink - case -ESHUTDOWN: // disconnect etc - break; - case 0: - dev->stats.tx_bytes += skb->len; - } - dev->stats.tx_packets++; - - spin_lock(&dev->req_lock); - list_add (&req->list, &dev->tx_reqs); - spin_unlock(&dev->req_lock); - dev_kfree_skb_any (skb); - - atomic_dec (&dev->tx_qlen); - if (netif_carrier_ok (dev->net)) - netif_wake_queue (dev->net); -} - -static inline int eth_is_promisc (struct eth_dev *dev) -{ - /* no filters for the CDC subset; always promisc */ - if (subset_active (dev)) - return 1; - return dev->cdc_filter & USB_CDC_PACKET_TYPE_PROMISCUOUS; -} - -static int eth_start_xmit (struct sk_buff *skb, struct net_device *net) -{ - struct eth_dev *dev = netdev_priv(net); - int length = skb->len; - int retval; - struct usb_request *req = NULL; - unsigned long flags; - - /* apply outgoing CDC or RNDIS filters */ - if (!eth_is_promisc (dev)) { - u8 *dest = skb->data; - - if (is_multicast_ether_addr(dest)) { - u16 type; - - /* ignores USB_CDC_PACKET_TYPE_MULTICAST and host - * SET_ETHERNET_MULTICAST_FILTERS requests - */ - if (is_broadcast_ether_addr(dest)) - type = USB_CDC_PACKET_TYPE_BROADCAST; - else - type = USB_CDC_PACKET_TYPE_ALL_MULTICAST; - if (!(dev->cdc_filter & type)) { - dev_kfree_skb_any (skb); - return 0; - } - } - /* ignores USB_CDC_PACKET_TYPE_DIRECTED */ - } - - spin_lock_irqsave(&dev->req_lock, flags); - /* - * this freelist can be empty if an interrupt triggered disconnect() - * and reconfigured the gadget (shutting down this queue) after the - * network stack decided to xmit but before we got the spinlock. - */ - if (list_empty(&dev->tx_reqs)) { - spin_unlock_irqrestore(&dev->req_lock, flags); - return 1; - } - - req = container_of (dev->tx_reqs.next, struct usb_request, list); - list_del (&req->list); - - /* temporarily stop TX queue when the freelist empties */ - if (list_empty (&dev->tx_reqs)) - netif_stop_queue (net); - spin_unlock_irqrestore(&dev->req_lock, flags); - - /* no buffer copies needed, unless the network stack did it - * or the hardware can't use skb buffers. - * or there's not enough space for any RNDIS headers we need - */ - if (rndis_active(dev)) { - struct sk_buff *skb_rndis; - - skb_rndis = skb_realloc_headroom (skb, - sizeof (struct rndis_packet_msg_type)); - if (!skb_rndis) - goto drop; - - dev_kfree_skb_any (skb); - skb = skb_rndis; - rndis_add_hdr (skb); - length = skb->len; - } - req->buf = skb->data; - req->context = skb; - req->complete = tx_complete; - - /* use zlp framing on tx for strict CDC-Ether conformance, - * though any robust network rx path ignores extra padding. - * and some hardware doesn't like to write zlps. - */ - req->zero = 1; - if (!dev->zlp && (length % dev->in_ep->maxpacket) == 0) - length++; - - req->length = length; - - /* throttle highspeed IRQ rate back slightly */ - if (gadget_is_dualspeed(dev->gadget)) - req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH) - ? ((atomic_read(&dev->tx_qlen) % qmult) != 0) - : 0; - - retval = usb_ep_queue (dev->in_ep, req, GFP_ATOMIC); - switch (retval) { - default: - DEBUG (dev, "tx queue err %d\n", retval); - break; - case 0: - net->trans_start = jiffies; - atomic_inc (&dev->tx_qlen); - } - - if (retval) { -drop: - dev->stats.tx_dropped++; - dev_kfree_skb_any (skb); - spin_lock_irqsave(&dev->req_lock, flags); - if (list_empty (&dev->tx_reqs)) - netif_start_queue (net); - list_add (&req->list, &dev->tx_reqs); - spin_unlock_irqrestore(&dev->req_lock, flags); - } - return 0; -} - -/*-------------------------------------------------------------------------*/ - -#ifdef CONFIG_USB_ETH_RNDIS - -/* The interrupt endpoint is used in RNDIS to notify the host when messages - * other than data packets are available ... notably the REMOTE_NDIS_*_CMPLT - * messages, but also REMOTE_NDIS_INDICATE_STATUS_MSG and potentially even - * REMOTE_NDIS_KEEPALIVE_MSG. - * - * The RNDIS control queue is processed by GET_ENCAPSULATED_RESPONSE, and - * normally just one notification will be queued. - */ - -static struct usb_request *eth_req_alloc (struct usb_ep *, unsigned, gfp_t); -static void eth_req_free (struct usb_ep *ep, struct usb_request *req); - -static void -rndis_control_ack_complete (struct usb_ep *ep, struct usb_request *req) -{ - struct eth_dev *dev = ep->driver_data; - - if (req->status || req->actual != req->length) - DEBUG (dev, - "rndis control ack complete --> %d, %d/%d\n", - req->status, req->actual, req->length); - req->context = NULL; - - if (req != dev->stat_req) - eth_req_free(ep, req); -} - -static int rndis_control_ack (struct net_device *net) -{ - struct eth_dev *dev = netdev_priv(net); - int length; - struct usb_request *resp = dev->stat_req; - - /* in case RNDIS calls this after disconnect */ - if (!dev->status) { - DEBUG (dev, "status ENODEV\n"); - return -ENODEV; - } - - /* in case queue length > 1 */ - if (resp->context) { - resp = eth_req_alloc (dev->status_ep, 8, GFP_ATOMIC); - if (!resp) - return -ENOMEM; - } - - /* Send RNDIS RESPONSE_AVAILABLE notification; - * USB_CDC_NOTIFY_RESPONSE_AVAILABLE should work too - */ - resp->length = 8; - resp->complete = rndis_control_ack_complete; - resp->context = dev; - - *((__le32 *) resp->buf) = __constant_cpu_to_le32 (1); - *((__le32 *) resp->buf + 1) = __constant_cpu_to_le32 (0); - - length = usb_ep_queue (dev->status_ep, resp, GFP_ATOMIC); - if (length < 0) { - resp->status = 0; - rndis_control_ack_complete (dev->status_ep, resp); - } - - return 0; -} - -#else - -#define rndis_control_ack NULL - -#endif /* RNDIS */ - -static void eth_start (struct eth_dev *dev, gfp_t gfp_flags) -{ - DEBUG (dev, "%s\n", __func__); - - /* fill the rx queue */ - rx_fill (dev, gfp_flags); - - /* and open the tx floodgates */ - atomic_set (&dev->tx_qlen, 0); - netif_wake_queue (dev->net); - if (rndis_active(dev)) { - rndis_set_param_medium (dev->rndis_config, - NDIS_MEDIUM_802_3, - BITRATE(dev->gadget)/100); - (void) rndis_signal_connect (dev->rndis_config); - } -} - -static int eth_open (struct net_device *net) -{ - struct eth_dev *dev = netdev_priv(net); - - DEBUG (dev, "%s\n", __func__); - if (netif_carrier_ok (dev->net)) - eth_start (dev, GFP_KERNEL); - return 0; + return geth_bind_config(c, hostaddr); } -static int eth_stop (struct net_device *net) -{ - struct eth_dev *dev = netdev_priv(net); - - VDEBUG (dev, "%s\n", __func__); - netif_stop_queue (net); - - DEBUG (dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld\n", - dev->stats.rx_packets, dev->stats.tx_packets, - dev->stats.rx_errors, dev->stats.tx_errors - ); - - /* ensure there are no more active requests */ - if (dev->config) { - usb_ep_disable (dev->in_ep); - usb_ep_disable (dev->out_ep); - if (netif_carrier_ok (dev->net)) { - DEBUG (dev, "host still using in/out endpoints\n"); - // FIXME idiom may leave toggle wrong here - usb_ep_enable (dev->in_ep, dev->in); - usb_ep_enable (dev->out_ep, dev->out); - } - if (dev->status_ep) { - usb_ep_disable (dev->status_ep); - usb_ep_enable (dev->status_ep, dev->status); - } - } - - if (rndis_active(dev)) { - rndis_set_param_medium(dev->rndis_config, NDIS_MEDIUM_802_3, 0); - (void) rndis_signal_disconnect (dev->rndis_config); - } - - return 0; -} +static struct usb_configuration eth_config_driver = { + /* .label = f(hardware) */ + .bind = eth_do_config, + .bConfigurationValue = 1, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + .bMaxPower = 1, /* 2 mA, minimal */ +}; /*-------------------------------------------------------------------------*/ -static struct usb_request * -eth_req_alloc (struct usb_ep *ep, unsigned size, gfp_t gfp_flags) +static int __init eth_bind(struct usb_composite_dev *cdev) { - struct usb_request *req; - - req = usb_ep_alloc_request (ep, gfp_flags); - if (!req) - return NULL; - - req->buf = kmalloc (size, gfp_flags); - if (!req->buf) { - usb_ep_free_request (ep, req); - req = NULL; - } - return req; -} - -static void -eth_req_free (struct usb_ep *ep, struct usb_request *req) -{ - kfree (req->buf); - usb_ep_free_request (ep, req); -} - - -static void /* __init_or_exit */ -eth_unbind (struct usb_gadget *gadget) -{ - struct eth_dev *dev = get_gadget_data (gadget); - - DEBUG (dev, "unbind\n"); - rndis_deregister (dev->rndis_config); - rndis_exit (); - - /* we've already been disconnected ... no i/o is active */ - if (dev->req) { - eth_req_free (gadget->ep0, dev->req); - dev->req = NULL; - } - if (dev->stat_req) { - eth_req_free (dev->status_ep, dev->stat_req); - dev->stat_req = NULL; - } - - unregister_netdev (dev->net); - free_netdev(dev->net); - - /* assuming we used keventd, it must quiesce too */ - flush_scheduled_work (); - set_gadget_data (gadget, NULL); -} - -static u8 __init nibble (unsigned char c) -{ - if (likely (isdigit (c))) - return c - '0'; - c = toupper (c); - if (likely (isxdigit (c))) - return 10 + c - 'A'; - return 0; -} + int gcnum; + struct usb_gadget *gadget = cdev->gadget; + int status; -static int __init get_ether_addr(const char *str, u8 *dev_addr) -{ - if (str) { - unsigned i; + /* set up network link layer */ + status = gether_setup(cdev->gadget, hostaddr); + if (status < 0) + return status; - for (i = 0; i < 6; i++) { - unsigned char num; + /* set up main config label and device descriptor */ + if (can_support_ecm(cdev->gadget)) { + /* ECM */ + eth_config_driver.label = "CDC Ethernet (ECM)"; + } else { + /* CDC Subset */ + eth_config_driver.label = "CDC Subset/SAFE"; - if((*str == '.') || (*str == ':')) - str++; - num = nibble(*str++) << 4; - num |= (nibble(*str++)); - dev_addr [i] = num; - } - if (is_valid_ether_addr (dev_addr)) - return 0; + device_desc.idVendor = cpu_to_le16(SIMPLE_VENDOR_NUM), + device_desc.idProduct = cpu_to_le16(SIMPLE_PRODUCT_NUM), + device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC; } - random_ether_addr(dev_addr); - return 1; -} - -static int __init -eth_bind (struct usb_gadget *gadget) -{ - struct eth_dev *dev; - struct net_device *net; - u8 cdc = 1, zlp = 1, rndis = 1; - struct usb_ep *in_ep, *out_ep, *status_ep = NULL; - int status = -ENOMEM; - int gcnum; - - /* these flags are only ever cleared; compiler take note */ -#ifndef DEV_CONFIG_CDC - cdc = 0; -#endif -#ifndef CONFIG_USB_ETH_RNDIS - rndis = 0; -#endif - /* Because most host side USB stacks handle CDC Ethernet, that - * standard protocol is _strongly_ preferred for interop purposes. - * (By everyone except Microsoft.) - */ - if (gadget_is_pxa (gadget)) { - /* pxa doesn't support altsettings */ - cdc = 0; - } else if (gadget_is_musbhdrc(gadget)) { - /* reduce tx dma overhead by avoiding special cases */ - zlp = 0; - } else if (gadget_is_sh(gadget)) { - /* sh doesn't support multiple interfaces or configs */ - cdc = 0; - rndis = 0; - } else if (gadget_is_sa1100 (gadget)) { - /* hardware can't write zlps */ - zlp = 0; - /* sa1100 CAN do CDC, without status endpoint ... we use - * non-CDC to be compatible with ARM Linux-2.4 "usb-eth". - */ - cdc = 0; + if (has_rndis()) { + /* RNDIS plus ECM-or-Subset */ + device_desc.idVendor = cpu_to_le16(RNDIS_VENDOR_NUM), + device_desc.idProduct = cpu_to_le16(RNDIS_PRODUCT_NUM), + device_desc.bNumConfigurations = 2; } - gcnum = usb_gadget_controller_number (gadget); + gcnum = usb_gadget_controller_number(gadget); if (gcnum >= 0) - device_desc.bcdDevice = cpu_to_le16 (0x0200 + gcnum); + device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); else { - /* can't assume CDC works. don't want to default to - * anything less functional on CDC-capable hardware, - * so we fail in this case. + /* We assume that can_support_ecm() tells the truth; + * but if the controller isn't recognized at all then + * that assumption is a bit more likely to be wrong. */ - dev_err (&gadget->dev, - "controller '%s' not recognized\n", - gadget->name); - return -ENODEV; - } - snprintf (manufacturer, sizeof manufacturer, "%s %s/%s", - init_utsname()->sysname, init_utsname()->release, - gadget->name); - - /* If there's an RNDIS configuration, that's what Windows wants to - * be using ... so use these product IDs here and in the "linux.inf" - * needed to install MSFT drivers. Current Linux kernels will use - * the second configuration if it's CDC Ethernet, and need some help - * to choose the right configuration otherwise. - */ - if (rndis) { - device_desc.idVendor = - __constant_cpu_to_le16(RNDIS_VENDOR_NUM); - device_desc.idProduct = - __constant_cpu_to_le16(RNDIS_PRODUCT_NUM); - snprintf (product_desc, sizeof product_desc, - "RNDIS/%s", driver_desc); - - /* CDC subset ... recognized by Linux since 2.4.10, but Windows - * drivers aren't widely available. (That may be improved by - * supporting one submode of the "SAFE" variant of MDLM.) - */ - } else if (!cdc) { - device_desc.idVendor = - __constant_cpu_to_le16(SIMPLE_VENDOR_NUM); - device_desc.idProduct = - __constant_cpu_to_le16(SIMPLE_PRODUCT_NUM); - } - - /* support optional vendor/distro customization */ - if (idVendor) { - if (!idProduct) { - dev_err (&gadget->dev, "idVendor needs idProduct!\n"); - return -ENODEV; - } - device_desc.idVendor = cpu_to_le16(idVendor); - device_desc.idProduct = cpu_to_le16(idProduct); - if (bcdDevice) - device_desc.bcdDevice = cpu_to_le16(bcdDevice); - } - if (iManufacturer) - strlcpy (manufacturer, iManufacturer, sizeof manufacturer); - if (iProduct) - strlcpy (product_desc, iProduct, sizeof product_desc); - if (iSerialNumber) { - device_desc.iSerialNumber = STRING_SERIALNUMBER, - strlcpy(serial_number, iSerialNumber, sizeof serial_number); - } - - /* all we really need is bulk IN/OUT */ - usb_ep_autoconfig_reset (gadget); - in_ep = usb_ep_autoconfig (gadget, &fs_source_desc); - if (!in_ep) { -autoconf_fail: - dev_err (&gadget->dev, - "can't autoconfigure on %s\n", - gadget->name); - return -ENODEV; - } - in_ep->driver_data = in_ep; /* claim */ - - out_ep = usb_ep_autoconfig (gadget, &fs_sink_desc); - if (!out_ep) - goto autoconf_fail; - out_ep->driver_data = out_ep; /* claim */ - -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) - /* CDC Ethernet control interface doesn't require a status endpoint. - * Since some hosts expect one, try to allocate one anyway. - */ - if (cdc || rndis) { - status_ep = usb_ep_autoconfig (gadget, &fs_status_desc); - if (status_ep) { - status_ep->driver_data = status_ep; /* claim */ - } else if (rndis) { - dev_err (&gadget->dev, - "can't run RNDIS on %s\n", - gadget->name); - return -ENODEV; -#ifdef DEV_CONFIG_CDC - /* pxa25x only does CDC subset; often used with RNDIS */ - } else if (cdc) { - control_intf.bNumEndpoints = 0; - /* FIXME remove endpoint from descriptor list */ -#endif - } - } -#endif - - /* one config: cdc, else minimal subset */ - if (!cdc) { - eth_config.bNumInterfaces = 1; - eth_config.iConfiguration = STRING_SUBSET; - - /* use functions to set these up, in case we're built to work - * with multiple controllers and must override CDC Ethernet. - */ - fs_subset_descriptors(); - hs_subset_descriptors(); - } - - device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; - usb_gadget_set_selfpowered (gadget); - - /* For now RNDIS is always a second config */ - if (rndis) - device_desc.bNumConfigurations = 2; - - if (gadget_is_dualspeed(gadget)) { - if (rndis) - dev_qualifier.bNumConfigurations = 2; - else if (!cdc) - dev_qualifier.bDeviceClass = USB_CLASS_VENDOR_SPEC; - - /* assumes ep0 uses the same value for both speeds ... */ - dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0; - - /* and that all endpoints are dual-speed */ - hs_source_desc.bEndpointAddress = - fs_source_desc.bEndpointAddress; - hs_sink_desc.bEndpointAddress = - fs_sink_desc.bEndpointAddress; -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) - if (status_ep) - hs_status_desc.bEndpointAddress = - fs_status_desc.bEndpointAddress; -#endif + WARN(cdev, "controller '%s' not recognized; trying %s\n", + gadget->name, + eth_config_driver.label); + device_desc.bcdDevice = + __constant_cpu_to_le16(0x0300 | 0x0099); } - if (gadget_is_otg(gadget)) { - otg_descriptor.bmAttributes |= USB_OTG_HNP, - eth_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - eth_config.bMaxPower = 4; -#ifdef CONFIG_USB_ETH_RNDIS - rndis_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - rndis_config.bMaxPower = 4; -#endif - } - - net = alloc_etherdev (sizeof *dev); - if (!net) - return status; - dev = netdev_priv(net); - spin_lock_init (&dev->lock); - spin_lock_init (&dev->req_lock); - INIT_WORK (&dev->work, eth_work); - INIT_LIST_HEAD (&dev->tx_reqs); - INIT_LIST_HEAD (&dev->rx_reqs); - - /* network device setup */ - dev->net = net; - strcpy (net->name, "usb%d"); - dev->cdc = cdc; - dev->zlp = zlp; - dev->in_ep = in_ep; - dev->out_ep = out_ep; - dev->status_ep = status_ep; - - /* Module params for these addresses should come from ID proms. - * The host side address is used with CDC and RNDIS, and commonly - * ends up in a persistent config database. It's not clear if - * host side code for the SAFE thing cares -- its original BLAN - * thing didn't, Sharp never assigned those addresses on Zaurii. + /* Allocate string descriptor numbers ... note that string + * contents can be overridden by the composite_dev glue. */ - if (get_ether_addr(dev_addr, net->dev_addr)) - dev_warn(&gadget->dev, - "using random %s ethernet address\n", "self"); - if (get_ether_addr(host_addr, dev->host_mac)) - dev_warn(&gadget->dev, - "using random %s ethernet address\n", "host"); - snprintf (ethaddr, sizeof ethaddr, "%02X%02X%02X%02X%02X%02X", - dev->host_mac [0], dev->host_mac [1], - dev->host_mac [2], dev->host_mac [3], - dev->host_mac [4], dev->host_mac [5]); - - if (rndis) { - status = rndis_init(); - if (status < 0) { - dev_err (&gadget->dev, "can't init RNDIS, %d\n", - status); - goto fail; - } - } - net->change_mtu = eth_change_mtu; - net->get_stats = eth_get_stats; - net->hard_start_xmit = eth_start_xmit; - net->open = eth_open; - net->stop = eth_stop; - // watchdog_timeo, tx_timeout ... - // set_multicast_list - SET_ETHTOOL_OPS(net, &ops); + /* device descriptor strings: manufacturer, product */ + snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", + init_utsname()->sysname, init_utsname()->release, + gadget->name); + status = usb_string_id(cdev); + if (status < 0) + goto fail; + strings_dev[STRING_MANUFACTURER_IDX].id = status; + device_desc.iManufacturer = status; - /* preallocate control message data and buffer */ - dev->req = eth_req_alloc (gadget->ep0, USB_BUFSIZ, GFP_KERNEL); - if (!dev->req) + status = usb_string_id(cdev); + if (status < 0) goto fail; - dev->req->complete = eth_setup_complete; + strings_dev[STRING_PRODUCT_IDX].id = status; + device_desc.iProduct = status; - /* ... and maybe likewise for status transfer */ -#if defined(DEV_CONFIG_CDC) || defined(CONFIG_USB_ETH_RNDIS) - if (dev->status_ep) { - dev->stat_req = eth_req_alloc (dev->status_ep, - STATUS_BYTECOUNT, GFP_KERNEL); - if (!dev->stat_req) { - eth_req_free (gadget->ep0, dev->req); + /* register our configuration(s); RNDIS first, if it's used */ + if (has_rndis()) { + status = usb_add_config(cdev, &rndis_config_driver); + if (status < 0) goto fail; - } - dev->stat_req->context = NULL; } -#endif - - /* finish hookup to lower layer ... */ - dev->gadget = gadget; - set_gadget_data (gadget, dev); - gadget->ep0->driver_data = dev; - /* two kinds of host-initiated state changes: - * - iff DATA transfer is active, carrier is "on" - * - tx queueing enabled if open *and* carrier is "on" - */ - netif_stop_queue (dev->net); - netif_carrier_off (dev->net); - - SET_NETDEV_DEV (dev->net, &gadget->dev); - status = register_netdev (dev->net); + status = usb_add_config(cdev, ð_config_driver); if (status < 0) - goto fail1; - - INFO (dev, "%s, version: " DRIVER_VERSION "\n", driver_desc); - INFO (dev, "using %s, OUT %s IN %s%s%s\n", gadget->name, - out_ep->name, in_ep->name, - status_ep ? " STATUS " : "", - status_ep ? status_ep->name : "" - ); - INFO (dev, "MAC %02x:%02x:%02x:%02x:%02x:%02x\n", - net->dev_addr [0], net->dev_addr [1], - net->dev_addr [2], net->dev_addr [3], - net->dev_addr [4], net->dev_addr [5]); - - if (cdc || rndis) - INFO (dev, "HOST MAC %02x:%02x:%02x:%02x:%02x:%02x\n", - dev->host_mac [0], dev->host_mac [1], - dev->host_mac [2], dev->host_mac [3], - dev->host_mac [4], dev->host_mac [5]); - - if (rndis) { - u32 vendorID = 0; - - /* FIXME RNDIS vendor id == "vendor NIC code" == ? */ - - dev->rndis_config = rndis_register (rndis_control_ack); - if (dev->rndis_config < 0) { -fail0: - unregister_netdev (dev->net); - status = -ENODEV; - goto fail; - } + goto fail; - /* these set up a lot of the OIDs that RNDIS needs */ - rndis_set_host_mac (dev->rndis_config, dev->host_mac); - if (rndis_set_param_dev (dev->rndis_config, dev->net, - &dev->stats, &dev->cdc_filter)) - goto fail0; - if (rndis_set_param_vendor(dev->rndis_config, vendorID, - manufacturer)) - goto fail0; - if (rndis_set_param_medium(dev->rndis_config, - NDIS_MEDIUM_802_3, 0)) - goto fail0; - INFO (dev, "RNDIS ready\n"); - } + INFO(cdev, "%s, version: " DRIVER_VERSION "\n", DRIVER_DESC); - return status; + return 0; -fail1: - dev_dbg(&gadget->dev, "register_netdev failed, %d\n", status); fail: - eth_unbind (gadget); + gether_cleanup(); return status; } -/*-------------------------------------------------------------------------*/ - -static void -eth_suspend (struct usb_gadget *gadget) -{ - struct eth_dev *dev = get_gadget_data (gadget); - - DEBUG (dev, "suspend\n"); - dev->suspended = 1; -} - -static void -eth_resume (struct usb_gadget *gadget) +static int __exit eth_unbind(struct usb_composite_dev *cdev) { - struct eth_dev *dev = get_gadget_data (gadget); - - DEBUG (dev, "resume\n"); - dev->suspended = 0; + gether_cleanup(); + return 0; } -/*-------------------------------------------------------------------------*/ - -static struct usb_gadget_driver eth_driver = { - .speed = DEVSPEED, - - .function = (char *) driver_desc, +static struct usb_composite_driver eth_driver = { + .name = "g_ether", + .dev = &device_desc, + .strings = dev_strings, .bind = eth_bind, - .unbind = eth_unbind, - - .setup = eth_setup, - .disconnect = eth_disconnect, - - .suspend = eth_suspend, - .resume = eth_resume, - - .driver = { - .name = (char *) shortname, - .owner = THIS_MODULE, - }, + .unbind = __exit_p(eth_unbind), }; -MODULE_DESCRIPTION (DRIVER_DESC); -MODULE_AUTHOR ("David Brownell, Benedikt Spanger"); -MODULE_LICENSE ("GPL"); +MODULE_DESCRIPTION(PREFIX DRIVER_DESC); +MODULE_AUTHOR("David Brownell, Benedikt Spanger"); +MODULE_LICENSE("GPL"); - -static int __init init (void) +static int __init init(void) { - return usb_gadget_register_driver (ð_driver); + return usb_composite_register(ð_driver); } -module_init (init); +module_init(init); -static void __exit cleanup (void) +static void __exit cleanup(void) { - usb_gadget_unregister_driver (ð_driver); + usb_composite_unregister(ð_driver); } -module_exit (cleanup); - +module_exit(cleanup); diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c new file mode 100644 index 00000000000..d8faccf2789 --- /dev/null +++ b/drivers/usb/gadget/f_acm.c @@ -0,0 +1,589 @@ +/* + * f_acm.c -- USB CDC serial (ACM) function driver + * + * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com) + * Copyright (C) 2008 by David Brownell + * Copyright (C) 2008 by Nokia Corporation + * + * This software is distributed under the terms of the GNU General + * Public License ("GPL") as published by the Free Software Foundation, + * either version 2 of that License or (at your option) any later version. + */ + +/* #define VERBOSE_DEBUG */ + +#include <linux/kernel.h> +#include <linux/device.h> + +#include "u_serial.h" +#include "gadget_chips.h" + + +/* + * This CDC ACM function support just wraps control functions and + * notifications around the generic serial-over-usb code. + * + * Because CDC ACM is standardized by the USB-IF, many host operating + * systems have drivers for it. Accordingly, ACM is the preferred + * interop solution for serial-port type connections. The control + * models are often not necessary, and in any case don't do much in + * this bare-bones implementation. + * + * Note that even MS-Windows has some support for ACM. However, that + * support is somewhat broken because when you use ACM in a composite + * device, having multiple interfaces confuses the poor OS. It doesn't + * seem to understand CDC Union descriptors. The new "association" + * descriptors (roughly equivalent to CDC Unions) may sometimes help. + */ + +struct acm_ep_descs { + struct usb_endpoint_descriptor *in; + struct usb_endpoint_descriptor *out; + struct usb_endpoint_descriptor *notify; +}; + +struct f_acm { + struct gserial port; + u8 ctrl_id, data_id; + u8 port_num; + + struct usb_descriptor_header **fs_function; + struct acm_ep_descs fs; + struct usb_descriptor_header **hs_function; + struct acm_ep_descs hs; + + struct usb_ep *notify; + struct usb_endpoint_descriptor *notify_desc; + + struct usb_cdc_line_coding port_line_coding; /* 8-N-1 etc */ + u16 port_handshake_bits; +#define RS232_RTS (1 << 1) /* unused with full duplex */ +#define RS232_DTR (1 << 0) /* host is ready for data r/w */ +}; + +static inline struct f_acm *func_to_acm(struct usb_function *f) +{ + return container_of(f, struct f_acm, port.func); +} + +/*-------------------------------------------------------------------------*/ + +/* notification endpoint uses smallish and infrequent fixed-size messages */ + +#define GS_LOG2_NOTIFY_INTERVAL 5 /* 1 << 5 == 32 msec */ +#define GS_NOTIFY_MAXPACKET 8 + +/* interface and class descriptors: */ + +static struct usb_interface_descriptor acm_control_interface_desc __initdata = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + /* .bInterfaceNumber = DYNAMIC */ + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_COMM, + .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, + .bInterfaceProtocol = USB_CDC_ACM_PROTO_AT_V25TER, + /* .iInterface = DYNAMIC */ +}; + +static struct usb_interface_descriptor acm_data_interface_desc __initdata = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + /* .bInterfaceNumber = DYNAMIC */ + .bNumEndpoints = 2, + .bInterfaceClass = USB_CLASS_CDC_DATA, + .bInterfaceSubClass = 0, + .bInterfaceProtocol = 0, + /* .iInterface = DYNAMIC */ +}; + +static struct usb_cdc_header_desc acm_header_desc __initdata = { + .bLength = sizeof(acm_header_desc), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_HEADER_TYPE, + .bcdCDC = __constant_cpu_to_le16(0x0110), +}; + +static struct usb_cdc_call_mgmt_descriptor +acm_call_mgmt_descriptor __initdata = { + .bLength = sizeof(acm_call_mgmt_descriptor), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_CALL_MANAGEMENT_TYPE, + .bmCapabilities = 0, + /* .bDataInterface = DYNAMIC */ +}; + +static struct usb_cdc_acm_descriptor acm_descriptor __initdata = { + .bLength = sizeof(acm_descriptor), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_ACM_TYPE, + .bmCapabilities = (1 << 1), +}; + +static struct usb_cdc_union_desc acm_union_desc __initdata = { + .bLength = sizeof(acm_union_desc), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_UNION_TYPE, + /* .bMasterInterface0 = DYNAMIC */ + /* .bSlaveInterface0 = DYNAMIC */ +}; + +/* full speed support: */ + +static struct usb_endpoint_descriptor acm_fs_notify_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = __constant_cpu_to_le16(GS_NOTIFY_MAXPACKET), + .bInterval = 1 << GS_LOG2_NOTIFY_INTERVAL, +}; + +static struct usb_endpoint_descriptor acm_fs_in_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor acm_fs_out_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_descriptor_header *acm_fs_function[] __initdata = { + (struct usb_descriptor_header *) &acm_control_interface_desc, + (struct usb_descriptor_header *) &acm_header_desc, + (struct usb_descriptor_header *) &acm_call_mgmt_descriptor, + (struct usb_descriptor_header *) &acm_descriptor, + (struct usb_descriptor_header *) &acm_union_desc, + (struct usb_descriptor_header *) &acm_fs_notify_desc, + (struct usb_descriptor_header *) &acm_data_interface_desc, + (struct usb_descriptor_header *) &acm_fs_in_desc, + (struct usb_descriptor_header *) &acm_fs_out_desc, + NULL, +}; + +/* high speed support: */ + +static struct usb_endpoint_descriptor acm_hs_notify_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = __constant_cpu_to_le16(GS_NOTIFY_MAXPACKET), + .bInterval = GS_LOG2_NOTIFY_INTERVAL+4, +}; + +static struct usb_endpoint_descriptor acm_hs_in_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor acm_hs_out_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_descriptor_header *acm_hs_function[] __initdata = { + (struct usb_descriptor_header *) &acm_control_interface_desc, + (struct usb_descriptor_header *) &acm_header_desc, + (struct usb_descriptor_header *) &acm_call_mgmt_descriptor, + (struct usb_descriptor_header *) &acm_descriptor, + (struct usb_descriptor_header *) &acm_union_desc, + (struct usb_descriptor_header *) &acm_hs_notify_desc, + (struct usb_descriptor_header *) &acm_data_interface_desc, + (struct usb_descriptor_header *) &acm_hs_in_desc, + (struct usb_descriptor_header *) &acm_hs_out_desc, + NULL, +}; + +/* string descriptors: */ + +#define ACM_CTRL_IDX 0 +#define ACM_DATA_IDX 1 + +/* static strings, in UTF-8 */ +static struct usb_string acm_string_defs[] = { + [ACM_CTRL_IDX].s = "CDC Abstract Control Model (ACM)", + [ACM_DATA_IDX].s = "CDC ACM Data", + { /* ZEROES END LIST */ }, +}; + +static struct usb_gadget_strings acm_string_table = { + .language = 0x0409, /* en-us */ + .strings = acm_string_defs, +}; + +static struct usb_gadget_strings *acm_strings[] = { + &acm_string_table, + NULL, +}; + +/*-------------------------------------------------------------------------*/ + +/* ACM control ... data handling is delegated to tty library code. + * The main task of this function is to activate and deactivate + * that code based on device state; track parameters like line + * speed, handshake state, and so on; and issue notifications. + */ + +static void acm_complete_set_line_coding(struct usb_ep *ep, + struct usb_request *req) +{ + struct f_acm *acm = ep->driver_data; + struct usb_composite_dev *cdev = acm->port.func.config->cdev; + + if (req->status != 0) { + DBG(cdev, "acm ttyGS%d completion, err %d\n", + acm->port_num, req->status); + return; + } + + /* normal completion */ + if (req->actual != sizeof(acm->port_line_coding)) { + DBG(cdev, "acm ttyGS%d short resp, len %d\n", + acm->port_num, req->actual); + usb_ep_set_halt(ep); + } else { + struct usb_cdc_line_coding *value = req->buf; + + /* REVISIT: we currently just remember this data. + * If we change that, (a) validate it first, then + * (b) update whatever hardware needs updating, + * (c) worry about locking. This is information on + * the order of 9600-8-N-1 ... most of which means + * nothing unless we control a real RS232 line. + */ + acm->port_line_coding = *value; + } +} + +static int acm_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) +{ + struct f_acm *acm = func_to_acm(f); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; + int value = -EOPNOTSUPP; + u16 w_index = le16_to_cpu(ctrl->wIndex); + u16 w_value = le16_to_cpu(ctrl->wValue); + u16 w_length = le16_to_cpu(ctrl->wLength); + + /* composite driver infrastructure handles everything except + * CDC class messages; interface activation uses set_alt(). + */ + switch ((ctrl->bRequestType << 8) | ctrl->bRequest) { + + /* SET_LINE_CODING ... just read and save what the host sends */ + case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_REQ_SET_LINE_CODING: + if (w_length != sizeof(struct usb_cdc_line_coding) + || w_index != acm->ctrl_id) + goto invalid; + + value = w_length; + cdev->gadget->ep0->driver_data = acm; + req->complete = acm_complete_set_line_coding; + break; + + /* GET_LINE_CODING ... return what host sent, or initial value */ + case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_REQ_GET_LINE_CODING: + if (w_index != acm->ctrl_id) + goto invalid; + + value = min_t(unsigned, w_length, + sizeof(struct usb_cdc_line_coding)); + memcpy(req->buf, &acm->port_line_coding, value); + break; + + /* SET_CONTROL_LINE_STATE ... save what the host sent */ + case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_REQ_SET_CONTROL_LINE_STATE: + if (w_index != acm->ctrl_id) + goto invalid; + + value = 0; + + /* FIXME we should not allow data to flow until the + * host sets the RS232_DTR bit; and when it clears + * that bit, we should return to that no-flow state. + */ + acm->port_handshake_bits = w_value; + break; + + default: +invalid: + VDBG(cdev, "invalid control req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + } + + /* respond with data transfer or status phase? */ + if (value >= 0) { + DBG(cdev, "acm ttyGS%d req%02x.%02x v%04x i%04x l%d\n", + acm->port_num, ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + req->zero = 0; + req->length = value; + value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + if (value < 0) + ERROR(cdev, "acm response on ttyGS%d, err %d\n", + acm->port_num, value); + } + + /* device either stalls (value < 0) or reports success */ + return value; +} + +static int acm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) +{ + struct f_acm *acm = func_to_acm(f); + struct usb_composite_dev *cdev = f->config->cdev; + + /* we know alt == 0, so this is an activation or a reset */ + + if (intf == acm->ctrl_id) { + /* REVISIT this may need more work when we start to + * send notifications ... + */ + if (acm->notify->driver_data) { + VDBG(cdev, "reset acm control interface %d\n", intf); + usb_ep_disable(acm->notify); + } else { + VDBG(cdev, "init acm ctrl interface %d\n", intf); + acm->notify_desc = ep_choose(cdev->gadget, + acm->hs.notify, + acm->fs.notify); + } + usb_ep_enable(acm->notify, acm->notify_desc); + acm->notify->driver_data = acm; + + } else if (intf == acm->data_id) { + if (acm->port.in->driver_data) { + DBG(cdev, "reset acm ttyGS%d\n", acm->port_num); + gserial_disconnect(&acm->port); + } else { + DBG(cdev, "activate acm ttyGS%d\n", acm->port_num); + acm->port.in_desc = ep_choose(cdev->gadget, + acm->hs.in, acm->fs.in); + acm->port.out_desc = ep_choose(cdev->gadget, + acm->hs.out, acm->fs.out); + } + gserial_connect(&acm->port, acm->port_num); + + } else + return -EINVAL; + + return 0; +} + +static void acm_disable(struct usb_function *f) +{ + struct f_acm *acm = func_to_acm(f); + struct usb_composite_dev *cdev = f->config->cdev; + + DBG(cdev, "acm ttyGS%d deactivated\n", acm->port_num); + gserial_disconnect(&acm->port); + usb_ep_disable(acm->notify); + acm->notify->driver_data = NULL; +} + +/*-------------------------------------------------------------------------*/ + +/* ACM function driver setup/binding */ +static int __init +acm_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct f_acm *acm = func_to_acm(f); + int status; + struct usb_ep *ep; + + /* allocate instance-specific interface IDs, and patch descriptors */ + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + acm->ctrl_id = status; + + acm_control_interface_desc.bInterfaceNumber = status; + acm_union_desc .bMasterInterface0 = status; + + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + acm->data_id = status; + + acm_data_interface_desc.bInterfaceNumber = status; + acm_union_desc.bSlaveInterface0 = status; + acm_call_mgmt_descriptor.bDataInterface = status; + + status = -ENODEV; + + /* allocate instance-specific endpoints */ + ep = usb_ep_autoconfig(cdev->gadget, &acm_fs_in_desc); + if (!ep) + goto fail; + acm->port.in = ep; + ep->driver_data = cdev; /* claim */ + + ep = usb_ep_autoconfig(cdev->gadget, &acm_fs_out_desc); + if (!ep) + goto fail; + acm->port.out = ep; + ep->driver_data = cdev; /* claim */ + + ep = usb_ep_autoconfig(cdev->gadget, &acm_fs_notify_desc); + if (!ep) + goto fail; + acm->notify = ep; + ep->driver_data = cdev; /* claim */ + + /* copy descriptors, and track endpoint copies */ + f->descriptors = usb_copy_descriptors(acm_fs_function); + + acm->fs.in = usb_find_endpoint(acm_fs_function, + f->descriptors, &acm_fs_in_desc); + acm->fs.out = usb_find_endpoint(acm_fs_function, + f->descriptors, &acm_fs_out_desc); + acm->fs.notify = usb_find_endpoint(acm_fs_function, + f->descriptors, &acm_fs_notify_desc); + + /* support all relevant hardware speeds... we expect that when + * hardware is dual speed, all bulk-capable endpoints work at + * both speeds + */ + if (gadget_is_dualspeed(c->cdev->gadget)) { + acm_hs_in_desc.bEndpointAddress = + acm_fs_in_desc.bEndpointAddress; + acm_hs_out_desc.bEndpointAddress = + acm_fs_out_desc.bEndpointAddress; + acm_hs_notify_desc.bEndpointAddress = + acm_fs_notify_desc.bEndpointAddress; + + /* copy descriptors, and track endpoint copies */ + f->hs_descriptors = usb_copy_descriptors(acm_hs_function); + + acm->hs.in = usb_find_endpoint(acm_hs_function, + f->hs_descriptors, &acm_hs_in_desc); + acm->hs.out = usb_find_endpoint(acm_hs_function, + f->hs_descriptors, &acm_hs_out_desc); + acm->hs.notify = usb_find_endpoint(acm_hs_function, + f->hs_descriptors, &acm_hs_notify_desc); + } + + /* FIXME provide a callback for triggering notifications */ + + DBG(cdev, "acm ttyGS%d: %s speed IN/%s OUT/%s NOTIFY/%s\n", + acm->port_num, + gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + acm->port.in->name, acm->port.out->name, + acm->notify->name); + return 0; + +fail: + /* we might as well release our claims on endpoints */ + if (acm->notify) + acm->notify->driver_data = NULL; + if (acm->port.out) + acm->port.out->driver_data = NULL; + if (acm->port.in) + acm->port.in->driver_data = NULL; + + ERROR(cdev, "%s/%p: can't bind, err %d\n", f->name, f, status); + + return status; +} + +static void +acm_unbind(struct usb_configuration *c, struct usb_function *f) +{ + if (gadget_is_dualspeed(c->cdev->gadget)) + usb_free_descriptors(f->hs_descriptors); + usb_free_descriptors(f->descriptors); + kfree(func_to_acm(f)); +} + +/* Some controllers can't support CDC ACM ... */ +static inline bool can_support_cdc(struct usb_configuration *c) +{ + /* SH3 doesn't support multiple interfaces */ + if (gadget_is_sh(c->cdev->gadget)) + return false; + + /* sa1100 doesn't have a third interrupt endpoint */ + if (gadget_is_sa1100(c->cdev->gadget)) + return false; + + /* everything else is *probably* fine ... */ + return true; +} + +/** + * acm_bind_config - add a CDC ACM function to a configuration + * @c: the configuration to support the CDC ACM instance + * @port_num: /dev/ttyGS* port this interface will use + * Context: single threaded during gadget setup + * + * Returns zero on success, else negative errno. + * + * Caller must have called @gserial_setup() with enough ports to + * handle all the ones it binds. Caller is also responsible + * for calling @gserial_cleanup() before module unload. + */ +int __init acm_bind_config(struct usb_configuration *c, u8 port_num) +{ + struct f_acm *acm; + int status; + + if (!can_support_cdc(c)) + return -EINVAL; + + /* REVISIT might want instance-specific strings to help + * distinguish instances ... + */ + + /* maybe allocate device-global string IDs, and patch descriptors */ + if (acm_string_defs[ACM_CTRL_IDX].id == 0) { + status = usb_string_id(c->cdev); + if (status < 0) + return status; + acm_string_defs[ACM_CTRL_IDX].id = status; + + acm_control_interface_desc.iInterface = status; + + status = usb_string_id(c->cdev); + if (status < 0) + return status; + acm_string_defs[ACM_DATA_IDX].id = status; + + acm_data_interface_desc.iInterface = status; + } + + /* allocate and initialize one new instance */ + acm = kzalloc(sizeof *acm, GFP_KERNEL); + if (!acm) + return -ENOMEM; + + acm->port_num = port_num; + + acm->port.func.name = "acm"; + acm->port.func.strings = acm_strings; + /* descriptors are per-instance copies */ + acm->port.func.bind = acm_bind; + acm->port.func.unbind = acm_unbind; + acm->port.func.set_alt = acm_set_alt; + acm->port.func.setup = acm_setup; + acm->port.func.disable = acm_disable; + + status = usb_add_function(c, &acm->port.func); + if (status) + kfree(acm); + return status; +} diff --git a/drivers/usb/gadget/f_ecm.c b/drivers/usb/gadget/f_ecm.c new file mode 100644 index 00000000000..0822e9d7693 --- /dev/null +++ b/drivers/usb/gadget/f_ecm.c @@ -0,0 +1,833 @@ +/* + * f_ecm.c -- USB CDC Ethernet (ECM) link function driver + * + * Copyright (C) 2003-2005,2008 David Brownell + * Copyright (C) 2008 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* #define VERBOSE_DEBUG */ + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/etherdevice.h> + +#include "u_ether.h" + + +/* + * This function is a "CDC Ethernet Networking Control Model" (CDC ECM) + * Ethernet link. The data transfer model is simple (packets sent and + * received over bulk endpoints using normal short packet termination), + * and the control model exposes various data and optional notifications. + * + * ECM is well standardized and (except for Microsoft) supported by most + * operating systems with USB host support. It's the preferred interop + * solution for Ethernet over USB, at least for firmware based solutions. + * (Hardware solutions tend to be more minimalist.) A newer and simpler + * "Ethernet Emulation Model" (CDC EEM) hasn't yet caught on. + * + * Note that ECM requires the use of "alternate settings" for its data + * interface. This means that the set_alt() method has real work to do, + * and also means that a get_alt() method is required. + */ + +struct ecm_ep_descs { + struct usb_endpoint_descriptor *in; + struct usb_endpoint_descriptor *out; + struct usb_endpoint_descriptor *notify; +}; + +enum ecm_notify_state { + ECM_NOTIFY_NONE, /* don't notify */ + ECM_NOTIFY_CONNECT, /* issue CONNECT next */ + ECM_NOTIFY_SPEED, /* issue SPEED_CHANGE next */ +}; + +struct f_ecm { + struct gether port; + u8 ctrl_id, data_id; + + char ethaddr[14]; + + struct usb_descriptor_header **fs_function; + struct ecm_ep_descs fs; + struct usb_descriptor_header **hs_function; + struct ecm_ep_descs hs; + + struct usb_ep *notify; + struct usb_endpoint_descriptor *notify_desc; + struct usb_request *notify_req; + u8 notify_state; + bool is_open; + + /* FIXME is_open needs some irq-ish locking + * ... possibly the same as port.ioport + */ +}; + +static inline struct f_ecm *func_to_ecm(struct usb_function *f) +{ + return container_of(f, struct f_ecm, port.func); +} + +/* peak (theoretical) bulk transfer rate in bits-per-second */ +static inline unsigned bitrate(struct usb_gadget *g) +{ + if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) + return 13 * 512 * 8 * 1000 * 8; + else + return 19 * 64 * 1 * 1000 * 8; +} + +/*-------------------------------------------------------------------------*/ + +/* + * Include the status endpoint if we can, even though it's optional. + * + * Use wMaxPacketSize big enough to fit CDC_NOTIFY_SPEED_CHANGE in one + * packet, to simplify cancellation; and a big transfer interval, to + * waste less bandwidth. + * + * Some drivers (like Linux 2.4 cdc-ether!) "need" it to exist even + * if they ignore the connect/disconnect notifications that real aether + * can provide. More advanced cdc configurations might want to support + * encapsulated commands (vendor-specific, using control-OUT). + */ + +#define LOG2_STATUS_INTERVAL_MSEC 5 /* 1 << 5 == 32 msec */ +#define STATUS_BYTECOUNT 16 /* 8 byte header + data */ + + +/* interface descriptor: */ + +static struct usb_interface_descriptor ecm_control_intf __initdata = { + .bLength = sizeof ecm_control_intf, + .bDescriptorType = USB_DT_INTERFACE, + + /* .bInterfaceNumber = DYNAMIC */ + /* status endpoint is optional; this could be patched later */ + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_COMM, + .bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, + .bInterfaceProtocol = USB_CDC_PROTO_NONE, + /* .iInterface = DYNAMIC */ +}; + +static struct usb_cdc_header_desc header_desc __initdata = { + .bLength = sizeof header_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_HEADER_TYPE, + + .bcdCDC = __constant_cpu_to_le16(0x0110), +}; + +static struct usb_cdc_union_desc ecm_union_desc __initdata = { + .bLength = sizeof(ecm_union_desc), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_UNION_TYPE, + /* .bMasterInterface0 = DYNAMIC */ + /* .bSlaveInterface0 = DYNAMIC */ +}; + +static struct usb_cdc_ether_desc ether_desc __initdata = { + .bLength = sizeof ether_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_ETHERNET_TYPE, + + /* this descriptor actually adds value, surprise! */ + /* .iMACAddress = DYNAMIC */ + .bmEthernetStatistics = __constant_cpu_to_le32(0), /* no statistics */ + .wMaxSegmentSize = __constant_cpu_to_le16(ETH_FRAME_LEN), + .wNumberMCFilters = __constant_cpu_to_le16(0), + .bNumberPowerFilters = 0, +}; + +/* the default data interface has no endpoints ... */ + +static struct usb_interface_descriptor ecm_data_nop_intf __initdata = { + .bLength = sizeof ecm_data_nop_intf, + .bDescriptorType = USB_DT_INTERFACE, + + .bInterfaceNumber = 1, + .bAlternateSetting = 0, + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_CDC_DATA, + .bInterfaceSubClass = 0, + .bInterfaceProtocol = 0, + /* .iInterface = DYNAMIC */ +}; + +/* ... but the "real" data interface has two bulk endpoints */ + +static struct usb_interface_descriptor ecm_data_intf __initdata = { + .bLength = sizeof ecm_data_intf, + .bDescriptorType = USB_DT_INTERFACE, + + .bInterfaceNumber = 1, + .bAlternateSetting = 1, + .bNumEndpoints = 2, + .bInterfaceClass = USB_CLASS_CDC_DATA, + .bInterfaceSubClass = 0, + .bInterfaceProtocol = 0, + /* .iInterface = DYNAMIC */ +}; + +/* full speed support: */ + +static struct usb_endpoint_descriptor fs_notify_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = __constant_cpu_to_le16(STATUS_BYTECOUNT), + .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC, +}; + +static struct usb_endpoint_descriptor fs_in_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor fs_out_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_descriptor_header *eth_fs_function[] __initdata = { + /* CDC ECM control descriptors */ + (struct usb_descriptor_header *) &ecm_control_intf, + (struct usb_descriptor_header *) &header_desc, + (struct usb_descriptor_header *) &ecm_union_desc, + (struct usb_descriptor_header *) ðer_desc, + /* NOTE: status endpoint might need to be removed */ + (struct usb_descriptor_header *) &fs_notify_desc, + /* data interface, altsettings 0 and 1 */ + (struct usb_descriptor_header *) &ecm_data_nop_intf, + (struct usb_descriptor_header *) &ecm_data_intf, + (struct usb_descriptor_header *) &fs_in_desc, + (struct usb_descriptor_header *) &fs_out_desc, + NULL, +}; + +/* high speed support: */ + +static struct usb_endpoint_descriptor hs_notify_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = __constant_cpu_to_le16(STATUS_BYTECOUNT), + .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, +}; +static struct usb_endpoint_descriptor hs_in_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor hs_out_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_descriptor_header *eth_hs_function[] __initdata = { + /* CDC ECM control descriptors */ + (struct usb_descriptor_header *) &ecm_control_intf, + (struct usb_descriptor_header *) &header_desc, + (struct usb_descriptor_header *) &ecm_union_desc, + (struct usb_descriptor_header *) ðer_desc, + /* NOTE: status endpoint might need to be removed */ + (struct usb_descriptor_header *) &hs_notify_desc, + /* data interface, altsettings 0 and 1 */ + (struct usb_descriptor_header *) &ecm_data_nop_intf, + (struct usb_descriptor_header *) &ecm_data_intf, + (struct usb_descriptor_header *) &hs_in_desc, + (struct usb_descriptor_header *) &hs_out_desc, + NULL, +}; + +/* string descriptors: */ + +static struct usb_string ecm_string_defs[] = { + [0].s = "CDC Ethernet Control Model (ECM)", + [1].s = NULL /* DYNAMIC */, + [2].s = "CDC Ethernet Data", + { } /* end of list */ +}; + +static struct usb_gadget_strings ecm_string_table = { + .language = 0x0409, /* en-us */ + .strings = ecm_string_defs, +}; + +static struct usb_gadget_strings *ecm_strings[] = { + &ecm_string_table, + NULL, +}; + +/*-------------------------------------------------------------------------*/ + +static void ecm_do_notify(struct f_ecm *ecm) +{ + struct usb_request *req = ecm->notify_req; + struct usb_cdc_notification *event; + struct usb_composite_dev *cdev = ecm->port.func.config->cdev; + __le32 *data; + int status; + + /* notification already in flight? */ + if (!req) + return; + + event = req->buf; + switch (ecm->notify_state) { + case ECM_NOTIFY_NONE: + return; + + case ECM_NOTIFY_CONNECT: + event->bNotificationType = USB_CDC_NOTIFY_NETWORK_CONNECTION; + if (ecm->is_open) + event->wValue = cpu_to_le16(1); + else + event->wValue = cpu_to_le16(0); + event->wLength = 0; + req->length = sizeof *event; + + DBG(cdev, "notify connect %s\n", + ecm->is_open ? "true" : "false"); + ecm->notify_state = ECM_NOTIFY_SPEED; + break; + + case ECM_NOTIFY_SPEED: + event->bNotificationType = USB_CDC_NOTIFY_SPEED_CHANGE; + event->wValue = cpu_to_le16(0); + event->wLength = cpu_to_le16(8); + req->length = STATUS_BYTECOUNT; + + /* SPEED_CHANGE data is up/down speeds in bits/sec */ + data = req->buf + sizeof *event; + data[0] = cpu_to_le32(bitrate(cdev->gadget)); + data[1] = data[0]; + + DBG(cdev, "notify speed %d\n", bitrate(cdev->gadget)); + ecm->notify_state = ECM_NOTIFY_NONE; + break; + } + event->bmRequestType = 0xA1; + event->wIndex = cpu_to_le16(ecm->ctrl_id); + + ecm->notify_req = NULL; + status = usb_ep_queue(ecm->notify, req, GFP_ATOMIC); + if (status < 0) { + ecm->notify_req = req; + DBG(cdev, "notify --> %d\n", status); + } +} + +static void ecm_notify(struct f_ecm *ecm) +{ + /* NOTE on most versions of Linux, host side cdc-ethernet + * won't listen for notifications until its netdevice opens. + * The first notification then sits in the FIFO for a long + * time, and the second one is queued. + */ + ecm->notify_state = ECM_NOTIFY_CONNECT; + ecm_do_notify(ecm); +} + +static void ecm_notify_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_ecm *ecm = req->context; + struct usb_composite_dev *cdev = ecm->port.func.config->cdev; + struct usb_cdc_notification *event = req->buf; + + switch (req->status) { + case 0: + /* no fault */ + break; + case -ECONNRESET: + case -ESHUTDOWN: + ecm->notify_state = ECM_NOTIFY_NONE; + break; + default: + DBG(cdev, "event %02x --> %d\n", + event->bNotificationType, req->status); + break; + } + ecm->notify_req = req; + ecm_do_notify(ecm); +} + +static int ecm_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) +{ + struct f_ecm *ecm = func_to_ecm(f); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; + int value = -EOPNOTSUPP; + u16 w_index = le16_to_cpu(ctrl->wIndex); + u16 w_value = le16_to_cpu(ctrl->wValue); + u16 w_length = le16_to_cpu(ctrl->wLength); + + /* composite driver infrastructure handles everything except + * CDC class messages; interface activation uses set_alt(). + */ + switch ((ctrl->bRequestType << 8) | ctrl->bRequest) { + case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_SET_ETHERNET_PACKET_FILTER: + /* see 6.2.30: no data, wIndex = interface, + * wValue = packet filter bitmap + */ + if (w_length != 0 || w_index != ecm->ctrl_id) + goto invalid; + DBG(cdev, "packet filter %02x\n", w_value); + /* REVISIT locking of cdc_filter. This assumes the UDC + * driver won't have a concurrent packet TX irq running on + * another CPU; or that if it does, this write is atomic... + */ + ecm->port.cdc_filter = w_value; + value = 0; + break; + + /* and optionally: + * case USB_CDC_SEND_ENCAPSULATED_COMMAND: + * case USB_CDC_GET_ENCAPSULATED_RESPONSE: + * case USB_CDC_SET_ETHERNET_MULTICAST_FILTERS: + * case USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER: + * case USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER: + * case USB_CDC_GET_ETHERNET_STATISTIC: + */ + + default: +invalid: + DBG(cdev, "invalid control req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + } + + /* respond with data transfer or status phase? */ + if (value >= 0) { + DBG(cdev, "ecm req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + req->zero = 0; + req->length = value; + value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + if (value < 0) + ERROR(cdev, "ecm req %02x.%02x response err %d\n", + ctrl->bRequestType, ctrl->bRequest, + value); + } + + /* device either stalls (value < 0) or reports success */ + return value; +} + + +static int ecm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) +{ + struct f_ecm *ecm = func_to_ecm(f); + struct usb_composite_dev *cdev = f->config->cdev; + + /* Control interface has only altsetting 0 */ + if (intf == ecm->ctrl_id) { + if (alt != 0) + goto fail; + + if (ecm->notify->driver_data) { + VDBG(cdev, "reset ecm control %d\n", intf); + usb_ep_disable(ecm->notify); + } else { + VDBG(cdev, "init ecm ctrl %d\n", intf); + ecm->notify_desc = ep_choose(cdev->gadget, + ecm->hs.notify, + ecm->fs.notify); + } + usb_ep_enable(ecm->notify, ecm->notify_desc); + ecm->notify->driver_data = ecm; + + /* Data interface has two altsettings, 0 and 1 */ + } else if (intf == ecm->data_id) { + if (alt > 1) + goto fail; + + if (ecm->port.in_ep->driver_data) { + DBG(cdev, "reset ecm\n"); + gether_disconnect(&ecm->port); + } + + if (!ecm->port.in) { + DBG(cdev, "init ecm\n"); + ecm->port.in = ep_choose(cdev->gadget, + ecm->hs.in, ecm->fs.in); + ecm->port.out = ep_choose(cdev->gadget, + ecm->hs.out, ecm->fs.out); + } + + /* CDC Ethernet only sends data in non-default altsettings. + * Changing altsettings resets filters, statistics, etc. + */ + if (alt == 1) { + struct net_device *net; + + /* Enable zlps by default for ECM conformance; + * override for musb_hdrc (avoids txdma ovhead) + * and sa1100 (can't). + */ + ecm->port.is_zlp_ok = !( + gadget_is_sa1100(cdev->gadget) + || gadget_is_musbhdrc(cdev->gadget) + ); + ecm->port.cdc_filter = DEFAULT_FILTER; + DBG(cdev, "activate ecm\n"); + net = gether_connect(&ecm->port); + if (IS_ERR(net)) + return PTR_ERR(net); + } + + /* NOTE this can be a minor disagreement with the ECM spec, + * which says speed notifications will "always" follow + * connection notifications. But we allow one connect to + * follow another (if the first is in flight), and instead + * just guarantee that a speed notification is always sent. + */ + ecm_notify(ecm); + } else + goto fail; + + return 0; +fail: + return -EINVAL; +} + +/* Because the data interface supports multiple altsettings, + * this ECM function *MUST* implement a get_alt() method. + */ +static int ecm_get_alt(struct usb_function *f, unsigned intf) +{ + struct f_ecm *ecm = func_to_ecm(f); + + if (intf == ecm->ctrl_id) + return 0; + return ecm->port.in_ep->driver_data ? 1 : 0; +} + +static void ecm_disable(struct usb_function *f) +{ + struct f_ecm *ecm = func_to_ecm(f); + struct usb_composite_dev *cdev = f->config->cdev; + + DBG(cdev, "ecm deactivated\n"); + + if (ecm->port.in_ep->driver_data) + gether_disconnect(&ecm->port); + + if (ecm->notify->driver_data) { + usb_ep_disable(ecm->notify); + ecm->notify->driver_data = NULL; + ecm->notify_desc = NULL; + } +} + +/*-------------------------------------------------------------------------*/ + +/* + * Callbacks let us notify the host about connect/disconnect when the + * net device is opened or closed. + * + * For testing, note that link states on this side include both opened + * and closed variants of: + * + * - disconnected/unconfigured + * - configured but inactive (data alt 0) + * - configured and active (data alt 1) + * + * Each needs to be tested with unplug, rmmod, SET_CONFIGURATION, and + * SET_INTERFACE (altsetting). Remember also that "configured" doesn't + * imply the host is actually polling the notification endpoint, and + * likewise that "active" doesn't imply it's actually using the data + * endpoints for traffic. + */ + +static void ecm_open(struct gether *geth) +{ + struct f_ecm *ecm = func_to_ecm(&geth->func); + + DBG(ecm->port.func.config->cdev, "%s\n", __func__); + + ecm->is_open = true; + ecm_notify(ecm); +} + +static void ecm_close(struct gether *geth) +{ + struct f_ecm *ecm = func_to_ecm(&geth->func); + + DBG(ecm->port.func.config->cdev, "%s\n", __func__); + + ecm->is_open = false; + ecm_notify(ecm); +} + +/*-------------------------------------------------------------------------*/ + +/* ethernet function driver setup/binding */ + +static int __init +ecm_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct f_ecm *ecm = func_to_ecm(f); + int status; + struct usb_ep *ep; + + /* allocate instance-specific interface IDs */ + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + ecm->ctrl_id = status; + + ecm_control_intf.bInterfaceNumber = status; + ecm_union_desc.bMasterInterface0 = status; + + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + ecm->data_id = status; + + ecm_data_nop_intf.bInterfaceNumber = status; + ecm_data_intf.bInterfaceNumber = status; + ecm_union_desc.bSlaveInterface0 = status; + + status = -ENODEV; + + /* allocate instance-specific endpoints */ + ep = usb_ep_autoconfig(cdev->gadget, &fs_in_desc); + if (!ep) + goto fail; + ecm->port.in_ep = ep; + ep->driver_data = cdev; /* claim */ + + ep = usb_ep_autoconfig(cdev->gadget, &fs_out_desc); + if (!ep) + goto fail; + ecm->port.out_ep = ep; + ep->driver_data = cdev; /* claim */ + + /* NOTE: a status/notification endpoint is *OPTIONAL* but we + * don't treat it that way. It's simpler, and some newer CDC + * profiles (wireless handsets) no longer treat it as optional. + */ + ep = usb_ep_autoconfig(cdev->gadget, &fs_notify_desc); + if (!ep) + goto fail; + ecm->notify = ep; + ep->driver_data = cdev; /* claim */ + + status = -ENOMEM; + + /* allocate notification request and buffer */ + ecm->notify_req = usb_ep_alloc_request(ep, GFP_KERNEL); + if (!ecm->notify_req) + goto fail; + ecm->notify_req->buf = kmalloc(STATUS_BYTECOUNT, GFP_KERNEL); + if (!ecm->notify_req->buf) + goto fail; + ecm->notify_req->context = ecm; + ecm->notify_req->complete = ecm_notify_complete; + + /* copy descriptors, and track endpoint copies */ + f->descriptors = usb_copy_descriptors(eth_fs_function); + if (!f->descriptors) + goto fail; + + ecm->fs.in = usb_find_endpoint(eth_fs_function, + f->descriptors, &fs_in_desc); + ecm->fs.out = usb_find_endpoint(eth_fs_function, + f->descriptors, &fs_out_desc); + ecm->fs.notify = usb_find_endpoint(eth_fs_function, + f->descriptors, &fs_notify_desc); + + /* support all relevant hardware speeds... we expect that when + * hardware is dual speed, all bulk-capable endpoints work at + * both speeds + */ + if (gadget_is_dualspeed(c->cdev->gadget)) { + hs_in_desc.bEndpointAddress = + fs_in_desc.bEndpointAddress; + hs_out_desc.bEndpointAddress = + fs_out_desc.bEndpointAddress; + hs_notify_desc.bEndpointAddress = + fs_notify_desc.bEndpointAddress; + + /* copy descriptors, and track endpoint copies */ + f->hs_descriptors = usb_copy_descriptors(eth_hs_function); + if (!f->hs_descriptors) + goto fail; + + ecm->hs.in = usb_find_endpoint(eth_hs_function, + f->hs_descriptors, &hs_in_desc); + ecm->hs.out = usb_find_endpoint(eth_hs_function, + f->hs_descriptors, &hs_out_desc); + ecm->hs.notify = usb_find_endpoint(eth_hs_function, + f->hs_descriptors, &hs_notify_desc); + } + + /* NOTE: all that is done without knowing or caring about + * the network link ... which is unavailable to this code + * until we're activated via set_alt(). + */ + + ecm->port.open = ecm_open; + ecm->port.close = ecm_close; + + DBG(cdev, "CDC Ethernet: %s speed IN/%s OUT/%s NOTIFY/%s\n", + gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + ecm->port.in_ep->name, ecm->port.out_ep->name, + ecm->notify->name); + return 0; + +fail: + if (f->descriptors) + usb_free_descriptors(f->descriptors); + + if (ecm->notify_req) { + kfree(ecm->notify_req->buf); + usb_ep_free_request(ecm->notify, ecm->notify_req); + } + + /* we might as well release our claims on endpoints */ + if (ecm->notify) + ecm->notify->driver_data = NULL; + if (ecm->port.out) + ecm->port.out_ep->driver_data = NULL; + if (ecm->port.in) + ecm->port.in_ep->driver_data = NULL; + + ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); + + return status; +} + +static void +ecm_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_ecm *ecm = func_to_ecm(f); + + DBG(c->cdev, "ecm unbind\n"); + + if (gadget_is_dualspeed(c->cdev->gadget)) + usb_free_descriptors(f->hs_descriptors); + usb_free_descriptors(f->descriptors); + + kfree(ecm->notify_req->buf); + usb_ep_free_request(ecm->notify, ecm->notify_req); + + ecm_string_defs[1].s = NULL; + kfree(ecm); +} + +/** + * ecm_bind_config - add CDC Ethernet network link to a configuration + * @c: the configuration to support the network link + * @ethaddr: a buffer in which the ethernet address of the host side + * side of the link was recorded + * Context: single threaded during gadget setup + * + * Returns zero on success, else negative errno. + * + * Caller must have called @gether_setup(). Caller is also responsible + * for calling @gether_cleanup() before module unload. + */ +int __init ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) +{ + struct f_ecm *ecm; + int status; + + if (!can_support_ecm(c->cdev->gadget) || !ethaddr) + return -EINVAL; + + /* maybe allocate device-global string IDs */ + if (ecm_string_defs[0].id == 0) { + + /* control interface label */ + status = usb_string_id(c->cdev); + if (status < 0) + return status; + ecm_string_defs[0].id = status; + ecm_control_intf.iInterface = status; + + /* data interface label */ + status = usb_string_id(c->cdev); + if (status < 0) + return status; + ecm_string_defs[2].id = status; + ecm_data_intf.iInterface = status; + + /* MAC address */ + status = usb_string_id(c->cdev); + if (status < 0) + return status; + ecm_string_defs[1].id = status; + ether_desc.iMACAddress = status; + } + + /* allocate and initialize one new instance */ + ecm = kzalloc(sizeof *ecm, GFP_KERNEL); + if (!ecm) + return -ENOMEM; + + /* export host's Ethernet address in CDC format */ + snprintf(ecm->ethaddr, sizeof ecm->ethaddr, + "%02X%02X%02X%02X%02X%02X", + ethaddr[0], ethaddr[1], ethaddr[2], + ethaddr[3], ethaddr[4], ethaddr[5]); + ecm_string_defs[1].s = ecm->ethaddr; + + ecm->port.cdc_filter = DEFAULT_FILTER; + + ecm->port.func.name = "cdc_ethernet"; + ecm->port.func.strings = ecm_strings; + /* descriptors are per-instance copies */ + ecm->port.func.bind = ecm_bind; + ecm->port.func.unbind = ecm_unbind; + ecm->port.func.set_alt = ecm_set_alt; + ecm->port.func.get_alt = ecm_get_alt; + ecm->port.func.setup = ecm_setup; + ecm->port.func.disable = ecm_disable; + + status = usb_add_function(c, &ecm->port.func); + if (status) { + ecm_string_defs[1].s = NULL; + kfree(ecm); + } + return status; +} diff --git a/drivers/usb/gadget/f_loopback.c b/drivers/usb/gadget/f_loopback.c new file mode 100644 index 00000000000..eda4cde72c8 --- /dev/null +++ b/drivers/usb/gadget/f_loopback.c @@ -0,0 +1,381 @@ +/* + * f_loopback.c - USB peripheral loopback configuration driver + * + * Copyright (C) 2003-2008 David Brownell + * Copyright (C) 2008 by Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* #define VERBOSE_DEBUG */ + +#include <linux/kernel.h> +#include <linux/utsname.h> +#include <linux/device.h> + +#include "g_zero.h" +#include "gadget_chips.h" + + +/* + * LOOPBACK FUNCTION ... a testing vehicle for USB peripherals, + * + * This takes messages of various sizes written OUT to a device, and loops + * them back so they can be read IN from it. It has been used by certain + * test applications. It supports limited testing of data queueing logic. + * + * + * This is currently packaged as a configuration driver, which can't be + * combined with other functions to make composite devices. However, it + * can be combined with other independent configurations. + */ +struct f_loopback { + struct usb_function function; + + struct usb_ep *in_ep; + struct usb_ep *out_ep; +}; + +static inline struct f_loopback *func_to_loop(struct usb_function *f) +{ + return container_of(f, struct f_loopback, function); +} + +static unsigned qlen = 32; +module_param(qlen, uint, 0); +MODULE_PARM_DESC(qlenn, "depth of loopback queue"); + +/*-------------------------------------------------------------------------*/ + +static struct usb_interface_descriptor loopback_intf = { + .bLength = sizeof loopback_intf, + .bDescriptorType = USB_DT_INTERFACE, + + .bNumEndpoints = 2, + .bInterfaceClass = USB_CLASS_VENDOR_SPEC, + /* .iInterface = DYNAMIC */ +}; + +/* full speed support: */ + +static struct usb_endpoint_descriptor fs_source_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor fs_sink_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_descriptor_header *fs_loopback_descs[] = { + (struct usb_descriptor_header *) &loopback_intf, + (struct usb_descriptor_header *) &fs_sink_desc, + (struct usb_descriptor_header *) &fs_source_desc, + NULL, +}; + +/* high speed support: */ + +static struct usb_endpoint_descriptor hs_source_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor hs_sink_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_descriptor_header *hs_loopback_descs[] = { + (struct usb_descriptor_header *) &loopback_intf, + (struct usb_descriptor_header *) &hs_source_desc, + (struct usb_descriptor_header *) &hs_sink_desc, + NULL, +}; + +/* function-specific strings: */ + +static struct usb_string strings_loopback[] = { + [0].s = "loop input to output", + { } /* end of list */ +}; + +static struct usb_gadget_strings stringtab_loop = { + .language = 0x0409, /* en-us */ + .strings = strings_loopback, +}; + +static struct usb_gadget_strings *loopback_strings[] = { + &stringtab_loop, + NULL, +}; + +/*-------------------------------------------------------------------------*/ + +static int __init +loopback_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct f_loopback *loop = func_to_loop(f); + int id; + + /* allocate interface ID(s) */ + id = usb_interface_id(c, f); + if (id < 0) + return id; + loopback_intf.bInterfaceNumber = id; + + /* allocate endpoints */ + + loop->in_ep = usb_ep_autoconfig(cdev->gadget, &fs_source_desc); + if (!loop->in_ep) { +autoconf_fail: + ERROR(cdev, "%s: can't autoconfigure on %s\n", + f->name, cdev->gadget->name); + return -ENODEV; + } + loop->in_ep->driver_data = cdev; /* claim */ + + loop->out_ep = usb_ep_autoconfig(cdev->gadget, &fs_sink_desc); + if (!loop->out_ep) + goto autoconf_fail; + loop->out_ep->driver_data = cdev; /* claim */ + + /* support high speed hardware */ + if (gadget_is_dualspeed(c->cdev->gadget)) { + hs_source_desc.bEndpointAddress = + fs_source_desc.bEndpointAddress; + hs_sink_desc.bEndpointAddress = + fs_sink_desc.bEndpointAddress; + f->hs_descriptors = hs_loopback_descs; + } + + DBG(cdev, "%s speed %s: IN/%s, OUT/%s\n", + gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + f->name, loop->in_ep->name, loop->out_ep->name); + return 0; +} + +static void +loopback_unbind(struct usb_configuration *c, struct usb_function *f) +{ + kfree(func_to_loop(f)); +} + +static void loopback_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_loopback *loop = ep->driver_data; + struct usb_composite_dev *cdev = loop->function.config->cdev; + int status = req->status; + + switch (status) { + + case 0: /* normal completion? */ + if (ep == loop->out_ep) { + /* loop this OUT packet back IN to the host */ + req->zero = (req->actual < req->length); + req->length = req->actual; + status = usb_ep_queue(loop->in_ep, req, GFP_ATOMIC); + if (status == 0) + return; + + /* "should never get here" */ + ERROR(cdev, "can't loop %s to %s: %d\n", + ep->name, loop->in_ep->name, + status); + } + + /* queue the buffer for some later OUT packet */ + req->length = buflen; + status = usb_ep_queue(loop->out_ep, req, GFP_ATOMIC); + if (status == 0) + return; + + /* "should never get here" */ + /* FALLTHROUGH */ + + default: + ERROR(cdev, "%s loop complete --> %d, %d/%d\n", ep->name, + status, req->actual, req->length); + /* FALLTHROUGH */ + + /* NOTE: since this driver doesn't maintain an explicit record + * of requests it submitted (just maintains qlen count), we + * rely on the hardware driver to clean up on disconnect or + * endpoint disable. + */ + case -ECONNABORTED: /* hardware forced ep reset */ + case -ECONNRESET: /* request dequeued */ + case -ESHUTDOWN: /* disconnect from host */ + free_ep_req(ep, req); + return; + } +} + +static void disable_loopback(struct f_loopback *loop) +{ + struct usb_composite_dev *cdev; + + cdev = loop->function.config->cdev; + disable_endpoints(cdev, loop->in_ep, loop->out_ep); + VDBG(cdev, "%s disabled\n", loop->function.name); +} + +static int +enable_loopback(struct usb_composite_dev *cdev, struct f_loopback *loop) +{ + int result = 0; + const struct usb_endpoint_descriptor *src, *sink; + struct usb_ep *ep; + struct usb_request *req; + unsigned i; + + src = ep_choose(cdev->gadget, &hs_source_desc, &fs_source_desc); + sink = ep_choose(cdev->gadget, &hs_sink_desc, &fs_sink_desc); + + /* one endpoint writes data back IN to the host */ + ep = loop->in_ep; + result = usb_ep_enable(ep, src); + if (result < 0) + return result; + ep->driver_data = loop; + + /* one endpoint just reads OUT packets */ + ep = loop->out_ep; + result = usb_ep_enable(ep, sink); + if (result < 0) { +fail0: + ep = loop->in_ep; + usb_ep_disable(ep); + ep->driver_data = NULL; + return result; + } + ep->driver_data = loop; + + /* allocate a bunch of read buffers and queue them all at once. + * we buffer at most 'qlen' transfers; fewer if any need more + * than 'buflen' bytes each. + */ + for (i = 0; i < qlen && result == 0; i++) { + req = alloc_ep_req(ep); + if (req) { + req->complete = loopback_complete; + result = usb_ep_queue(ep, req, GFP_ATOMIC); + if (result) + ERROR(cdev, "%s queue req --> %d\n", + ep->name, result); + } else { + usb_ep_disable(ep); + ep->driver_data = NULL; + result = -ENOMEM; + goto fail0; + } + } + + DBG(cdev, "%s enabled\n", loop->function.name); + return result; +} + +static int loopback_set_alt(struct usb_function *f, + unsigned intf, unsigned alt) +{ + struct f_loopback *loop = func_to_loop(f); + struct usb_composite_dev *cdev = f->config->cdev; + + /* we know alt is zero */ + if (loop->in_ep->driver_data) + disable_loopback(loop); + return enable_loopback(cdev, loop); +} + +static void loopback_disable(struct usb_function *f) +{ + struct f_loopback *loop = func_to_loop(f); + + disable_loopback(loop); +} + +/*-------------------------------------------------------------------------*/ + +static int __init loopback_bind_config(struct usb_configuration *c) +{ + struct f_loopback *loop; + int status; + + loop = kzalloc(sizeof *loop, GFP_KERNEL); + if (!loop) + return -ENOMEM; + + loop->function.name = "loopback"; + loop->function.descriptors = fs_loopback_descs; + loop->function.bind = loopback_bind; + loop->function.unbind = loopback_unbind; + loop->function.set_alt = loopback_set_alt; + loop->function.disable = loopback_disable; + + status = usb_add_function(c, &loop->function); + if (status) + kfree(loop); + return status; +} + +static struct usb_configuration loopback_driver = { + .label = "loopback", + .strings = loopback_strings, + .bind = loopback_bind_config, + .bConfigurationValue = 2, + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + .bMaxPower = 1, /* 2 mA, minimal */ + /* .iConfiguration = DYNAMIC */ +}; + +/** + * loopback_add - add a loopback testing configuration to a device + * @cdev: the device to support the loopback configuration + */ +int __init loopback_add(struct usb_composite_dev *cdev) +{ + int id; + + /* allocate string ID(s) */ + id = usb_string_id(cdev); + if (id < 0) + return id; + strings_loopback[0].id = id; + + loopback_intf.iInterface = id; + loopback_driver.iConfiguration = id; + + /* support OTG systems */ + if (gadget_is_otg(cdev->gadget)) { + loopback_driver.descriptors = otg_desc; + loopback_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } + + return usb_add_config(cdev, &loopback_driver); +} diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c new file mode 100644 index 00000000000..61652f0f13f --- /dev/null +++ b/drivers/usb/gadget/f_rndis.c @@ -0,0 +1,827 @@ +/* + * f_rndis.c -- RNDIS link function driver + * + * Copyright (C) 2003-2005,2008 David Brownell + * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger + * Copyright (C) 2008 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* #define VERBOSE_DEBUG */ + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/etherdevice.h> + +#include <asm/atomic.h> + +#include "u_ether.h" +#include "rndis.h" + + +/* + * This function is an RNDIS Ethernet port -- a Microsoft protocol that's + * been promoted instead of the standard CDC Ethernet. The published RNDIS + * spec is ambiguous, incomplete, and needlessly complex. Variants such as + * ActiveSync have even worse status in terms of specification. + * + * In short: it's a protocol controlled by (and for) Microsoft, not for an + * Open ecosystem or markets. Linux supports it *only* because Microsoft + * doesn't support the CDC Ethernet standard. + * + * The RNDIS data transfer model is complex, with multiple Ethernet packets + * per USB message, and out of band data. The control model is built around + * what's essentially an "RNDIS RPC" protocol. It's all wrapped in a CDC ACM + * (modem, not Ethernet) veneer, with those ACM descriptors being entirely + * useless (they're ignored). RNDIS expects to be the only function in its + * configuration, so it's no real help if you need composite devices; and + * it expects to be the first configuration too. + * + * There is a single technical advantage of RNDIS over CDC Ethernet, if you + * discount the fluff that its RPC can be made to deliver: it doesn't need + * a NOP altsetting for the data interface. That lets it work on some of the + * "so smart it's stupid" hardware which takes over configuration changes + * from the software, and adds restrictions like "no altsettings". + * + * Unfortunately MSFT's RNDIS drivers are buggy. They hang or oops, and + * have all sorts of contrary-to-specification oddities that can prevent + * them from working sanely. Since bugfixes (or accurate specs, letting + * Linux work around those bugs) are unlikely to ever come from MSFT, you + * may want to avoid using RNDIS on purely operational grounds. + * + * Omissions from the RNDIS 1.0 specification include: + * + * - Power management ... references data that's scattered around lots + * of other documentation, which is incorrect/incomplete there too. + * + * - There are various undocumented protocol requirements, like the need + * to send garbage in some control-OUT messages. + * + * - MS-Windows drivers sometimes emit undocumented requests. + */ + +struct rndis_ep_descs { + struct usb_endpoint_descriptor *in; + struct usb_endpoint_descriptor *out; + struct usb_endpoint_descriptor *notify; +}; + +struct f_rndis { + struct gether port; + u8 ctrl_id, data_id; + u8 ethaddr[ETH_ALEN]; + int config; + + struct usb_descriptor_header **fs_function; + struct rndis_ep_descs fs; + struct usb_descriptor_header **hs_function; + struct rndis_ep_descs hs; + + struct usb_ep *notify; + struct usb_endpoint_descriptor *notify_desc; + struct usb_request *notify_req; + atomic_t notify_count; +}; + +static inline struct f_rndis *func_to_rndis(struct usb_function *f) +{ + return container_of(f, struct f_rndis, port.func); +} + +/* peak (theoretical) bulk transfer rate in bits-per-second */ +static unsigned int bitrate(struct usb_gadget *g) +{ + if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) + return 13 * 512 * 8 * 1000 * 8; + else + return 19 * 64 * 1 * 1000 * 8; +} + +/*-------------------------------------------------------------------------*/ + +/* + */ + +#define LOG2_STATUS_INTERVAL_MSEC 5 /* 1 << 5 == 32 msec */ +#define STATUS_BYTECOUNT 8 /* 8 bytes data */ + + +/* interface descriptor: */ + +static struct usb_interface_descriptor rndis_control_intf __initdata = { + .bLength = sizeof rndis_control_intf, + .bDescriptorType = USB_DT_INTERFACE, + + /* .bInterfaceNumber = DYNAMIC */ + /* status endpoint is optional; this could be patched later */ + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_COMM, + .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, + .bInterfaceProtocol = USB_CDC_ACM_PROTO_VENDOR, + /* .iInterface = DYNAMIC */ +}; + +static struct usb_cdc_header_desc header_desc __initdata = { + .bLength = sizeof header_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_HEADER_TYPE, + + .bcdCDC = __constant_cpu_to_le16(0x0110), +}; + +static struct usb_cdc_call_mgmt_descriptor call_mgmt_descriptor __initdata = { + .bLength = sizeof call_mgmt_descriptor, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_CALL_MANAGEMENT_TYPE, + + .bmCapabilities = 0x00, + .bDataInterface = 0x01, +}; + +static struct usb_cdc_acm_descriptor acm_descriptor __initdata = { + .bLength = sizeof acm_descriptor, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_ACM_TYPE, + + .bmCapabilities = 0x00, +}; + +static struct usb_cdc_union_desc rndis_union_desc __initdata = { + .bLength = sizeof(rndis_union_desc), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_UNION_TYPE, + /* .bMasterInterface0 = DYNAMIC */ + /* .bSlaveInterface0 = DYNAMIC */ +}; + +/* the data interface has two bulk endpoints */ + +static struct usb_interface_descriptor rndis_data_intf __initdata = { + .bLength = sizeof rndis_data_intf, + .bDescriptorType = USB_DT_INTERFACE, + + /* .bInterfaceNumber = DYNAMIC */ + .bAlternateSetting = 1, + .bNumEndpoints = 2, + .bInterfaceClass = USB_CLASS_CDC_DATA, + .bInterfaceSubClass = 0, + .bInterfaceProtocol = 0, + /* .iInterface = DYNAMIC */ +}; + +/* full speed support: */ + +static struct usb_endpoint_descriptor fs_notify_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = __constant_cpu_to_le16(STATUS_BYTECOUNT), + .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC, +}; + +static struct usb_endpoint_descriptor fs_in_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor fs_out_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_descriptor_header *eth_fs_function[] __initdata = { + /* control interface matches ACM, not Ethernet */ + (struct usb_descriptor_header *) &rndis_control_intf, + (struct usb_descriptor_header *) &header_desc, + (struct usb_descriptor_header *) &call_mgmt_descriptor, + (struct usb_descriptor_header *) &acm_descriptor, + (struct usb_descriptor_header *) &rndis_union_desc, + (struct usb_descriptor_header *) &fs_notify_desc, + /* data interface has no altsetting */ + (struct usb_descriptor_header *) &rndis_data_intf, + (struct usb_descriptor_header *) &fs_in_desc, + (struct usb_descriptor_header *) &fs_out_desc, + NULL, +}; + +/* high speed support: */ + +static struct usb_endpoint_descriptor hs_notify_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = __constant_cpu_to_le16(STATUS_BYTECOUNT), + .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, +}; +static struct usb_endpoint_descriptor hs_in_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor hs_out_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_descriptor_header *eth_hs_function[] __initdata = { + /* control interface matches ACM, not Ethernet */ + (struct usb_descriptor_header *) &rndis_control_intf, + (struct usb_descriptor_header *) &header_desc, + (struct usb_descriptor_header *) &call_mgmt_descriptor, + (struct usb_descriptor_header *) &acm_descriptor, + (struct usb_descriptor_header *) &rndis_union_desc, + (struct usb_descriptor_header *) &hs_notify_desc, + /* data interface has no altsetting */ + (struct usb_descriptor_header *) &rndis_data_intf, + (struct usb_descriptor_header *) &hs_in_desc, + (struct usb_descriptor_header *) &hs_out_desc, + NULL, +}; + +/* string descriptors: */ + +static struct usb_string rndis_string_defs[] = { + [0].s = "RNDIS Communications Control", + [1].s = "RNDIS Ethernet Data", + { } /* end of list */ +}; + +static struct usb_gadget_strings rndis_string_table = { + .language = 0x0409, /* en-us */ + .strings = rndis_string_defs, +}; + +static struct usb_gadget_strings *rndis_strings[] = { + &rndis_string_table, + NULL, +}; + +/*-------------------------------------------------------------------------*/ + +static struct sk_buff *rndis_add_header(struct sk_buff *skb) +{ + skb = skb_realloc_headroom(skb, sizeof(struct rndis_packet_msg_type)); + if (skb) + rndis_add_hdr(skb); + return skb; +} + +static void rndis_response_available(void *_rndis) +{ + struct f_rndis *rndis = _rndis; + struct usb_request *req = rndis->notify_req; + struct usb_composite_dev *cdev = rndis->port.func.config->cdev; + __le32 *data = req->buf; + int status; + + if (atomic_inc_return(&rndis->notify_count)) + return; + + /* Send RNDIS RESPONSE_AVAILABLE notification; a + * USB_CDC_NOTIFY_RESPONSE_AVAILABLE "should" work too + * + * This is the only notification defined by RNDIS. + */ + data[0] = cpu_to_le32(1); + data[1] = cpu_to_le32(0); + + status = usb_ep_queue(rndis->notify, req, GFP_ATOMIC); + if (status) { + atomic_dec(&rndis->notify_count); + DBG(cdev, "notify/0 --> %d\n", status); + } +} + +static void rndis_response_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_rndis *rndis = req->context; + struct usb_composite_dev *cdev = rndis->port.func.config->cdev; + int status = req->status; + + /* after TX: + * - USB_CDC_GET_ENCAPSULATED_RESPONSE (ep0/control) + * - RNDIS_RESPONSE_AVAILABLE (status/irq) + */ + switch (status) { + case -ECONNRESET: + case -ESHUTDOWN: + /* connection gone */ + atomic_set(&rndis->notify_count, 0); + break; + default: + DBG(cdev, "RNDIS %s response error %d, %d/%d\n", + ep->name, status, + req->actual, req->length); + /* FALLTHROUGH */ + case 0: + if (ep != rndis->notify) + break; + + /* handle multiple pending RNDIS_RESPONSE_AVAILABLE + * notifications by resending until we're done + */ + if (atomic_dec_and_test(&rndis->notify_count)) + break; + status = usb_ep_queue(rndis->notify, req, GFP_ATOMIC); + if (status) { + atomic_dec(&rndis->notify_count); + DBG(cdev, "notify/1 --> %d\n", status); + } + break; + } +} + +static void rndis_command_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_rndis *rndis = req->context; + struct usb_composite_dev *cdev = rndis->port.func.config->cdev; + int status; + + /* received RNDIS command from USB_CDC_SEND_ENCAPSULATED_COMMAND */ +// spin_lock(&dev->lock); + status = rndis_msg_parser(rndis->config, (u8 *) req->buf); + if (status < 0) + ERROR(cdev, "RNDIS command error %d, %d/%d\n", + status, req->actual, req->length); +// spin_unlock(&dev->lock); +} + +static int +rndis_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) +{ + struct f_rndis *rndis = func_to_rndis(f); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; + int value = -EOPNOTSUPP; + u16 w_index = le16_to_cpu(ctrl->wIndex); + u16 w_value = le16_to_cpu(ctrl->wValue); + u16 w_length = le16_to_cpu(ctrl->wLength); + + /* composite driver infrastructure handles everything except + * CDC class messages; interface activation uses set_alt(). + */ + switch ((ctrl->bRequestType << 8) | ctrl->bRequest) { + + /* RNDIS uses the CDC command encapsulation mechanism to implement + * an RPC scheme, with much getting/setting of attributes by OID. + */ + case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_SEND_ENCAPSULATED_COMMAND: + if (w_length > req->length || w_value + || w_index != rndis->ctrl_id) + goto invalid; + /* read the request; process it later */ + value = w_length; + req->complete = rndis_command_complete; + req->context = rndis; + /* later, rndis_response_available() sends a notification */ + break; + + case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_GET_ENCAPSULATED_RESPONSE: + if (w_value || w_index != rndis->ctrl_id) + goto invalid; + else { + u8 *buf; + u32 n; + + /* return the result */ + buf = rndis_get_next_response(rndis->config, &n); + if (buf) { + memcpy(req->buf, buf, n); + req->complete = rndis_response_complete; + rndis_free_response(rndis->config, buf); + value = n; + } + /* else stalls ... spec says to avoid that */ + } + break; + + default: +invalid: + VDBG(cdev, "invalid control req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + } + + /* respond with data transfer or status phase? */ + if (value >= 0) { + DBG(cdev, "rndis req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + req->zero = 0; + req->length = value; + value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + if (value < 0) + ERROR(cdev, "rndis response on err %d\n", value); + } + + /* device either stalls (value < 0) or reports success */ + return value; +} + + +static int rndis_set_alt(struct usb_function *f, unsigned intf, unsigned alt) +{ + struct f_rndis *rndis = func_to_rndis(f); + struct usb_composite_dev *cdev = f->config->cdev; + + /* we know alt == 0 */ + + if (intf == rndis->ctrl_id) { + if (rndis->notify->driver_data) { + VDBG(cdev, "reset rndis control %d\n", intf); + usb_ep_disable(rndis->notify); + } else { + VDBG(cdev, "init rndis ctrl %d\n", intf); + rndis->notify_desc = ep_choose(cdev->gadget, + rndis->hs.notify, + rndis->fs.notify); + } + usb_ep_enable(rndis->notify, rndis->notify_desc); + rndis->notify->driver_data = rndis; + + } else if (intf == rndis->data_id) { + struct net_device *net; + + if (rndis->port.in_ep->driver_data) { + DBG(cdev, "reset rndis\n"); + gether_disconnect(&rndis->port); + } else { + DBG(cdev, "init rndis\n"); + rndis->port.in = ep_choose(cdev->gadget, + rndis->hs.in, rndis->fs.in); + rndis->port.out = ep_choose(cdev->gadget, + rndis->hs.out, rndis->fs.out); + } + + /* Avoid ZLPs; they can be troublesome. */ + rndis->port.is_zlp_ok = false; + + /* RNDIS should be in the "RNDIS uninitialized" state, + * either never activated or after rndis_uninit(). + * + * We don't want data to flow here until a nonzero packet + * filter is set, at which point it enters "RNDIS data + * initialized" state ... but we do want the endpoints + * to be activated. It's a strange little state. + * + * REVISIT the RNDIS gadget code has done this wrong for a + * very long time. We need another call to the link layer + * code -- gether_updown(...bool) maybe -- to do it right. + */ + rndis->port.cdc_filter = 0; + + DBG(cdev, "RNDIS RX/TX early activation ... \n"); + net = gether_connect(&rndis->port); + if (IS_ERR(net)) + return PTR_ERR(net); + + rndis_set_param_dev(rndis->config, net, + &rndis->port.cdc_filter); + } else + goto fail; + + return 0; +fail: + return -EINVAL; +} + +static void rndis_disable(struct usb_function *f) +{ + struct f_rndis *rndis = func_to_rndis(f); + struct usb_composite_dev *cdev = f->config->cdev; + + if (!rndis->notify->driver_data) + return; + + DBG(cdev, "rndis deactivated\n"); + + rndis_uninit(rndis->config); + gether_disconnect(&rndis->port); + + usb_ep_disable(rndis->notify); + rndis->notify->driver_data = NULL; +} + +/*-------------------------------------------------------------------------*/ + +/* + * This isn't quite the same mechanism as CDC Ethernet, since the + * notification scheme passes less data, but the same set of link + * states must be tested. A key difference is that altsettings are + * not used to tell whether the link should send packets or not. + */ + +static void rndis_open(struct gether *geth) +{ + struct f_rndis *rndis = func_to_rndis(&geth->func); + struct usb_composite_dev *cdev = geth->func.config->cdev; + + DBG(cdev, "%s\n", __func__); + + rndis_set_param_medium(rndis->config, NDIS_MEDIUM_802_3, + bitrate(cdev->gadget) / 100); + rndis_signal_connect(rndis->config); +} + +static void rndis_close(struct gether *geth) +{ + struct f_rndis *rndis = func_to_rndis(&geth->func); + + DBG(geth->func.config->cdev, "%s\n", __func__); + + rndis_set_param_medium(rndis->config, NDIS_MEDIUM_802_3, 0); + rndis_signal_disconnect(rndis->config); +} + +/*-------------------------------------------------------------------------*/ + +/* ethernet function driver setup/binding */ + +static int __init +rndis_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct f_rndis *rndis = func_to_rndis(f); + int status; + struct usb_ep *ep; + + /* allocate instance-specific interface IDs */ + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + rndis->ctrl_id = status; + + rndis_control_intf.bInterfaceNumber = status; + rndis_union_desc.bMasterInterface0 = status; + + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + rndis->data_id = status; + + rndis_data_intf.bInterfaceNumber = status; + rndis_union_desc.bSlaveInterface0 = status; + + status = -ENODEV; + + /* allocate instance-specific endpoints */ + ep = usb_ep_autoconfig(cdev->gadget, &fs_in_desc); + if (!ep) + goto fail; + rndis->port.in_ep = ep; + ep->driver_data = cdev; /* claim */ + + ep = usb_ep_autoconfig(cdev->gadget, &fs_out_desc); + if (!ep) + goto fail; + rndis->port.out_ep = ep; + ep->driver_data = cdev; /* claim */ + + /* NOTE: a status/notification endpoint is, strictly speaking, + * optional. We don't treat it that way though! It's simpler, + * and some newer profiles don't treat it as optional. + */ + ep = usb_ep_autoconfig(cdev->gadget, &fs_notify_desc); + if (!ep) + goto fail; + rndis->notify = ep; + ep->driver_data = cdev; /* claim */ + + status = -ENOMEM; + + /* allocate notification request and buffer */ + rndis->notify_req = usb_ep_alloc_request(ep, GFP_KERNEL); + if (!rndis->notify_req) + goto fail; + rndis->notify_req->buf = kmalloc(STATUS_BYTECOUNT, GFP_KERNEL); + if (!rndis->notify_req->buf) + goto fail; + rndis->notify_req->length = STATUS_BYTECOUNT; + rndis->notify_req->context = rndis; + rndis->notify_req->complete = rndis_response_complete; + + /* copy descriptors, and track endpoint copies */ + f->descriptors = usb_copy_descriptors(eth_fs_function); + if (!f->descriptors) + goto fail; + + rndis->fs.in = usb_find_endpoint(eth_fs_function, + f->descriptors, &fs_in_desc); + rndis->fs.out = usb_find_endpoint(eth_fs_function, + f->descriptors, &fs_out_desc); + rndis->fs.notify = usb_find_endpoint(eth_fs_function, + f->descriptors, &fs_notify_desc); + + /* support all relevant hardware speeds... we expect that when + * hardware is dual speed, all bulk-capable endpoints work at + * both speeds + */ + if (gadget_is_dualspeed(c->cdev->gadget)) { + hs_in_desc.bEndpointAddress = + fs_in_desc.bEndpointAddress; + hs_out_desc.bEndpointAddress = + fs_out_desc.bEndpointAddress; + + /* copy descriptors, and track endpoint copies */ + f->hs_descriptors = usb_copy_descriptors(eth_hs_function); + + if (!f->hs_descriptors) + goto fail; + + rndis->hs.in = usb_find_endpoint(eth_hs_function, + f->hs_descriptors, &hs_in_desc); + rndis->hs.out = usb_find_endpoint(eth_hs_function, + f->hs_descriptors, &hs_out_desc); + } + + rndis->port.open = rndis_open; + rndis->port.close = rndis_close; + + status = rndis_register(rndis_response_available, rndis); + if (status < 0) + goto fail; + rndis->config = status; + + rndis_set_param_medium(rndis->config, NDIS_MEDIUM_802_3, 0); + rndis_set_host_mac(rndis->config, rndis->ethaddr); + +#if 0 +// FIXME + if (rndis_set_param_vendor(rndis->config, vendorID, + manufacturer)) + goto fail0; +#endif + + /* NOTE: all that is done without knowing or caring about + * the network link ... which is unavailable to this code + * until we're activated via set_alt(). + */ + + DBG(cdev, "RNDIS: %s speed IN/%s OUT/%s NOTIFY/%s\n", + gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + rndis->port.in_ep->name, rndis->port.out_ep->name, + rndis->notify->name); + return 0; + +fail: + if (gadget_is_dualspeed(c->cdev->gadget) && f->hs_descriptors) + usb_free_descriptors(f->hs_descriptors); + if (f->descriptors) + usb_free_descriptors(f->descriptors); + + if (rndis->notify_req) { + kfree(rndis->notify_req->buf); + usb_ep_free_request(rndis->notify, rndis->notify_req); + } + + /* we might as well release our claims on endpoints */ + if (rndis->notify) + rndis->notify->driver_data = NULL; + if (rndis->port.out) + rndis->port.out_ep->driver_data = NULL; + if (rndis->port.in) + rndis->port.in_ep->driver_data = NULL; + + ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); + + return status; +} + +static void +rndis_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_rndis *rndis = func_to_rndis(f); + + rndis_deregister(rndis->config); + rndis_exit(); + + if (gadget_is_dualspeed(c->cdev->gadget)) + usb_free_descriptors(f->hs_descriptors); + usb_free_descriptors(f->descriptors); + + kfree(rndis->notify_req->buf); + usb_ep_free_request(rndis->notify, rndis->notify_req); + + kfree(rndis); +} + +/* Some controllers can't support RNDIS ... */ +static inline bool can_support_rndis(struct usb_configuration *c) +{ + /* only two endpoints on sa1100 */ + if (gadget_is_sa1100(c->cdev->gadget)) + return false; + + /* everything else is *presumably* fine */ + return true; +} + +/** + * rndis_bind_config - add RNDIS network link to a configuration + * @c: the configuration to support the network link + * @ethaddr: a buffer in which the ethernet address of the host side + * side of the link was recorded + * Context: single threaded during gadget setup + * + * Returns zero on success, else negative errno. + * + * Caller must have called @gether_setup(). Caller is also responsible + * for calling @gether_cleanup() before module unload. + */ +int __init rndis_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) +{ + struct f_rndis *rndis; + int status; + + if (!can_support_rndis(c) || !ethaddr) + return -EINVAL; + + /* maybe allocate device-global string IDs */ + if (rndis_string_defs[0].id == 0) { + + /* ... and setup RNDIS itself */ + status = rndis_init(); + if (status < 0) + return status; + + /* control interface label */ + status = usb_string_id(c->cdev); + if (status < 0) + return status; + rndis_string_defs[0].id = status; + rndis_control_intf.iInterface = status; + + /* data interface label */ + status = usb_string_id(c->cdev); + if (status < 0) + return status; + rndis_string_defs[1].id = status; + rndis_data_intf.iInterface = status; + } + + /* allocate and initialize one new instance */ + status = -ENOMEM; + rndis = kzalloc(sizeof *rndis, GFP_KERNEL); + if (!rndis) + goto fail; + + memcpy(rndis->ethaddr, ethaddr, ETH_ALEN); + + /* RNDIS activates when the host changes this filter */ + rndis->port.cdc_filter = 0; + + /* RNDIS has special (and complex) framing */ + rndis->port.header_len = sizeof(struct rndis_packet_msg_type); + rndis->port.wrap = rndis_add_header; + rndis->port.unwrap = rndis_rm_hdr; + + rndis->port.func.name = "rndis"; + rndis->port.func.strings = rndis_strings; + /* descriptors are per-instance copies */ + rndis->port.func.bind = rndis_bind; + rndis->port.func.unbind = rndis_unbind; + rndis->port.func.set_alt = rndis_set_alt; + rndis->port.func.setup = rndis_setup; + rndis->port.func.disable = rndis_disable; + + status = usb_add_function(c, &rndis->port.func); + if (status) { + kfree(rndis); +fail: + rndis_exit(); + } + return status; +} diff --git a/drivers/usb/gadget/f_serial.c b/drivers/usb/gadget/f_serial.c new file mode 100644 index 00000000000..1b6bde9aaed --- /dev/null +++ b/drivers/usb/gadget/f_serial.c @@ -0,0 +1,296 @@ +/* + * f_serial.c - generic USB serial function driver + * + * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com) + * Copyright (C) 2008 by David Brownell + * Copyright (C) 2008 by Nokia Corporation + * + * This software is distributed under the terms of the GNU General + * Public License ("GPL") as published by the Free Software Foundation, + * either version 2 of that License or (at your option) any later version. + */ + +#include <linux/kernel.h> +#include <linux/device.h> + +#include "u_serial.h" +#include "gadget_chips.h" + + +/* + * This function packages a simple "generic serial" port with no real + * control mechanisms, just raw data transfer over two bulk endpoints. + * + * Because it's not standardized, this isn't as interoperable as the + * CDC ACM driver. However, for many purposes it's just as functional + * if you can arrange appropriate host side drivers. + */ + +struct gser_descs { + struct usb_endpoint_descriptor *in; + struct usb_endpoint_descriptor *out; +}; + +struct f_gser { + struct gserial port; + u8 data_id; + u8 port_num; + + struct usb_descriptor_header **fs_function; + struct gser_descs fs; + struct usb_descriptor_header **hs_function; + struct gser_descs hs; +}; + +static inline struct f_gser *func_to_gser(struct usb_function *f) +{ + return container_of(f, struct f_gser, port.func); +} + +/*-------------------------------------------------------------------------*/ + +/* interface descriptor: */ + +static struct usb_interface_descriptor gser_interface_desc __initdata = { + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + /* .bInterfaceNumber = DYNAMIC */ + .bNumEndpoints = 2, + .bInterfaceClass = USB_CLASS_VENDOR_SPEC, + .bInterfaceSubClass = 0, + .bInterfaceProtocol = 0, + /* .iInterface = DYNAMIC */ +}; + +/* full speed support: */ + +static struct usb_endpoint_descriptor gser_fs_in_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor gser_fs_out_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_descriptor_header *gser_fs_function[] __initdata = { + (struct usb_descriptor_header *) &gser_interface_desc, + (struct usb_descriptor_header *) &gser_fs_in_desc, + (struct usb_descriptor_header *) &gser_fs_out_desc, + NULL, +}; + +/* high speed support: */ + +static struct usb_endpoint_descriptor gser_hs_in_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor gser_hs_out_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_descriptor_header *gser_hs_function[] __initdata = { + (struct usb_descriptor_header *) &gser_interface_desc, + (struct usb_descriptor_header *) &gser_hs_in_desc, + (struct usb_descriptor_header *) &gser_hs_out_desc, + NULL, +}; + +/* string descriptors: */ + +static struct usb_string gser_string_defs[] = { + [0].s = "Generic Serial", + { } /* end of list */ +}; + +static struct usb_gadget_strings gser_string_table = { + .language = 0x0409, /* en-us */ + .strings = gser_string_defs, +}; + +static struct usb_gadget_strings *gser_strings[] = { + &gser_string_table, + NULL, +}; + +/*-------------------------------------------------------------------------*/ + +static int gser_set_alt(struct usb_function *f, unsigned intf, unsigned alt) +{ + struct f_gser *gser = func_to_gser(f); + struct usb_composite_dev *cdev = f->config->cdev; + + /* we know alt == 0, so this is an activation or a reset */ + + if (gser->port.in->driver_data) { + DBG(cdev, "reset generic ttyGS%d\n", gser->port_num); + gserial_disconnect(&gser->port); + } else { + DBG(cdev, "activate generic ttyGS%d\n", gser->port_num); + gser->port.in_desc = ep_choose(cdev->gadget, + gser->hs.in, gser->fs.in); + gser->port.out_desc = ep_choose(cdev->gadget, + gser->hs.out, gser->fs.out); + } + gserial_connect(&gser->port, gser->port_num); + return 0; +} + +static void gser_disable(struct usb_function *f) +{ + struct f_gser *gser = func_to_gser(f); + struct usb_composite_dev *cdev = f->config->cdev; + + DBG(cdev, "generic ttyGS%d deactivated\n", gser->port_num); + gserial_disconnect(&gser->port); +} + +/*-------------------------------------------------------------------------*/ + +/* serial function driver setup/binding */ + +static int __init +gser_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct f_gser *gser = func_to_gser(f); + int status; + struct usb_ep *ep; + + /* allocate instance-specific interface IDs */ + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + gser->data_id = status; + gser_interface_desc.bInterfaceNumber = status; + + status = -ENODEV; + + /* allocate instance-specific endpoints */ + ep = usb_ep_autoconfig(cdev->gadget, &gser_fs_in_desc); + if (!ep) + goto fail; + gser->port.in = ep; + ep->driver_data = cdev; /* claim */ + + ep = usb_ep_autoconfig(cdev->gadget, &gser_fs_out_desc); + if (!ep) + goto fail; + gser->port.out = ep; + ep->driver_data = cdev; /* claim */ + + /* copy descriptors, and track endpoint copies */ + f->descriptors = usb_copy_descriptors(gser_fs_function); + + gser->fs.in = usb_find_endpoint(gser_fs_function, + f->descriptors, &gser_fs_in_desc); + gser->fs.out = usb_find_endpoint(gser_fs_function, + f->descriptors, &gser_fs_out_desc); + + + /* support all relevant hardware speeds... we expect that when + * hardware is dual speed, all bulk-capable endpoints work at + * both speeds + */ + if (gadget_is_dualspeed(c->cdev->gadget)) { + gser_hs_in_desc.bEndpointAddress = + gser_fs_in_desc.bEndpointAddress; + gser_hs_out_desc.bEndpointAddress = + gser_fs_out_desc.bEndpointAddress; + + /* copy descriptors, and track endpoint copies */ + f->hs_descriptors = usb_copy_descriptors(gser_hs_function); + + gser->hs.in = usb_find_endpoint(gser_hs_function, + f->hs_descriptors, &gser_hs_in_desc); + gser->hs.out = usb_find_endpoint(gser_hs_function, + f->hs_descriptors, &gser_hs_out_desc); + } + + DBG(cdev, "generic ttyGS%d: %s speed IN/%s OUT/%s\n", + gser->port_num, + gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + gser->port.in->name, gser->port.out->name); + return 0; + +fail: + /* we might as well release our claims on endpoints */ + if (gser->port.out) + gser->port.out->driver_data = NULL; + if (gser->port.in) + gser->port.in->driver_data = NULL; + + ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); + + return status; +} + +static void +gser_unbind(struct usb_configuration *c, struct usb_function *f) +{ + if (gadget_is_dualspeed(c->cdev->gadget)) + usb_free_descriptors(f->hs_descriptors); + usb_free_descriptors(f->descriptors); + kfree(func_to_gser(f)); +} + +/** + * gser_bind_config - add a generic serial function to a configuration + * @c: the configuration to support the serial instance + * @port_num: /dev/ttyGS* port this interface will use + * Context: single threaded during gadget setup + * + * Returns zero on success, else negative errno. + * + * Caller must have called @gserial_setup() with enough ports to + * handle all the ones it binds. Caller is also responsible + * for calling @gserial_cleanup() before module unload. + */ +int __init gser_bind_config(struct usb_configuration *c, u8 port_num) +{ + struct f_gser *gser; + int status; + + /* REVISIT might want instance-specific strings to help + * distinguish instances ... + */ + + /* maybe allocate device-global string ID */ + if (gser_string_defs[0].id == 0) { + status = usb_string_id(c->cdev); + if (status < 0) + return status; + gser_string_defs[0].id = status; + } + + /* allocate and initialize one new instance */ + gser = kzalloc(sizeof *gser, GFP_KERNEL); + if (!gser) + return -ENOMEM; + + gser->port_num = port_num; + + gser->port.func.name = "gser"; + gser->port.func.strings = gser_strings; + gser->port.func.bind = gser_bind; + gser->port.func.unbind = gser_unbind; + gser->port.func.set_alt = gser_set_alt; + gser->port.func.disable = gser_disable; + + status = usb_add_function(c, &gser->port.func); + if (status) + kfree(gser); + return status; +} diff --git a/drivers/usb/gadget/f_sourcesink.c b/drivers/usb/gadget/f_sourcesink.c new file mode 100644 index 00000000000..f18c3a14d72 --- /dev/null +++ b/drivers/usb/gadget/f_sourcesink.c @@ -0,0 +1,587 @@ +/* + * f_sourcesink.c - USB peripheral source/sink configuration driver + * + * Copyright (C) 2003-2008 David Brownell + * Copyright (C) 2008 by Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* #define VERBOSE_DEBUG */ + +#include <linux/kernel.h> +#include <linux/utsname.h> +#include <linux/device.h> + +#include "g_zero.h" +#include "gadget_chips.h" + + +/* + * SOURCE/SINK FUNCTION ... a primary testing vehicle for USB peripheral + * controller drivers. + * + * This just sinks bulk packets OUT to the peripheral and sources them IN + * to the host, optionally with specific data patterns for integrity tests. + * As such it supports basic functionality and load tests. + * + * In terms of control messaging, this supports all the standard requests + * plus two that support control-OUT tests. If the optional "autoresume" + * mode is enabled, it provides good functional coverage for the "USBCV" + * test harness from USB-IF. + * + * Note that because this doesn't queue more than one request at a time, + * some other function must be used to test queueing logic. The network + * link (g_ether) is the best overall option for that, since its TX and RX + * queues are relatively independent, will receive a range of packet sizes, + * and can often be made to run out completely. Those issues are important + * when stress testing peripheral controller drivers. + * + * + * This is currently packaged as a configuration driver, which can't be + * combined with other functions to make composite devices. However, it + * can be combined with other independent configurations. + */ +struct f_sourcesink { + struct usb_function function; + + struct usb_ep *in_ep; + struct usb_ep *out_ep; + struct timer_list resume; +}; + +static inline struct f_sourcesink *func_to_ss(struct usb_function *f) +{ + return container_of(f, struct f_sourcesink, function); +} + +static unsigned autoresume; +module_param(autoresume, uint, 0); +MODULE_PARM_DESC(autoresume, "zero, or seconds before remote wakeup"); + +static unsigned pattern; +module_param(pattern, uint, 0); +MODULE_PARM_DESC(pattern, "0 = all zeroes, 1 = mod63 "); + +/*-------------------------------------------------------------------------*/ + +static struct usb_interface_descriptor source_sink_intf = { + .bLength = sizeof source_sink_intf, + .bDescriptorType = USB_DT_INTERFACE, + + .bNumEndpoints = 2, + .bInterfaceClass = USB_CLASS_VENDOR_SPEC, + /* .iInterface = DYNAMIC */ +}; + +/* full speed support: */ + +static struct usb_endpoint_descriptor fs_source_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor fs_sink_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_descriptor_header *fs_source_sink_descs[] = { + (struct usb_descriptor_header *) &source_sink_intf, + (struct usb_descriptor_header *) &fs_sink_desc, + (struct usb_descriptor_header *) &fs_source_desc, + NULL, +}; + +/* high speed support: */ + +static struct usb_endpoint_descriptor hs_source_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor hs_sink_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_descriptor_header *hs_source_sink_descs[] = { + (struct usb_descriptor_header *) &source_sink_intf, + (struct usb_descriptor_header *) &hs_source_desc, + (struct usb_descriptor_header *) &hs_sink_desc, + NULL, +}; + +/* function-specific strings: */ + +static struct usb_string strings_sourcesink[] = { + [0].s = "source and sink data", + { } /* end of list */ +}; + +static struct usb_gadget_strings stringtab_sourcesink = { + .language = 0x0409, /* en-us */ + .strings = strings_sourcesink, +}; + +static struct usb_gadget_strings *sourcesink_strings[] = { + &stringtab_sourcesink, + NULL, +}; + +/*-------------------------------------------------------------------------*/ + +static void sourcesink_autoresume(unsigned long _c) +{ + struct usb_composite_dev *cdev = (void *)_c; + struct usb_gadget *g = cdev->gadget; + + /* Normally the host would be woken up for something + * more significant than just a timer firing; likely + * because of some direct user request. + */ + if (g->speed != USB_SPEED_UNKNOWN) { + int status = usb_gadget_wakeup(g); + DBG(cdev, "%s --> %d\n", __func__, status); + } +} + +static int __init +sourcesink_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct f_sourcesink *ss = func_to_ss(f); + int id; + + /* allocate interface ID(s) */ + id = usb_interface_id(c, f); + if (id < 0) + return id; + source_sink_intf.bInterfaceNumber = id; + + /* allocate endpoints */ + ss->in_ep = usb_ep_autoconfig(cdev->gadget, &fs_source_desc); + if (!ss->in_ep) { +autoconf_fail: + ERROR(cdev, "%s: can't autoconfigure on %s\n", + f->name, cdev->gadget->name); + return -ENODEV; + } + ss->in_ep->driver_data = cdev; /* claim */ + + ss->out_ep = usb_ep_autoconfig(cdev->gadget, &fs_sink_desc); + if (!ss->out_ep) + goto autoconf_fail; + ss->out_ep->driver_data = cdev; /* claim */ + + setup_timer(&ss->resume, sourcesink_autoresume, + (unsigned long) c->cdev); + + /* support high speed hardware */ + if (gadget_is_dualspeed(c->cdev->gadget)) { + hs_source_desc.bEndpointAddress = + fs_source_desc.bEndpointAddress; + hs_sink_desc.bEndpointAddress = + fs_sink_desc.bEndpointAddress; + f->hs_descriptors = hs_source_sink_descs; + } + + DBG(cdev, "%s speed %s: IN/%s, OUT/%s\n", + gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + f->name, ss->in_ep->name, ss->out_ep->name); + return 0; +} + +static void +sourcesink_unbind(struct usb_configuration *c, struct usb_function *f) +{ + kfree(func_to_ss(f)); +} + +/* optionally require specific source/sink data patterns */ +static int check_read_data(struct f_sourcesink *ss, struct usb_request *req) +{ + unsigned i; + u8 *buf = req->buf; + struct usb_composite_dev *cdev = ss->function.config->cdev; + + for (i = 0; i < req->actual; i++, buf++) { + switch (pattern) { + + /* all-zeroes has no synchronization issues */ + case 0: + if (*buf == 0) + continue; + break; + + /* "mod63" stays in sync with short-terminated transfers, + * OR otherwise when host and gadget agree on how large + * each usb transfer request should be. Resync is done + * with set_interface or set_config. (We *WANT* it to + * get quickly out of sync if controllers or their drivers + * stutter for any reason, including buffer duplcation...) + */ + case 1: + if (*buf == (u8)(i % 63)) + continue; + break; + } + ERROR(cdev, "bad OUT byte, buf[%d] = %d\n", i, *buf); + usb_ep_set_halt(ss->out_ep); + return -EINVAL; + } + return 0; +} + +static void reinit_write_data(struct usb_ep *ep, struct usb_request *req) +{ + unsigned i; + u8 *buf = req->buf; + + switch (pattern) { + case 0: + memset(req->buf, 0, req->length); + break; + case 1: + for (i = 0; i < req->length; i++) + *buf++ = (u8) (i % 63); + break; + } +} + +static void source_sink_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_sourcesink *ss = ep->driver_data; + struct usb_composite_dev *cdev = ss->function.config->cdev; + int status = req->status; + + switch (status) { + + case 0: /* normal completion? */ + if (ep == ss->out_ep) { + check_read_data(ss, req); + memset(req->buf, 0x55, req->length); + } else + reinit_write_data(ep, req); + break; + + /* this endpoint is normally active while we're configured */ + case -ECONNABORTED: /* hardware forced ep reset */ + case -ECONNRESET: /* request dequeued */ + case -ESHUTDOWN: /* disconnect from host */ + VDBG(cdev, "%s gone (%d), %d/%d\n", ep->name, status, + req->actual, req->length); + if (ep == ss->out_ep) + check_read_data(ss, req); + free_ep_req(ep, req); + return; + + case -EOVERFLOW: /* buffer overrun on read means that + * we didn't provide a big enough + * buffer. + */ + default: +#if 1 + DBG(cdev, "%s complete --> %d, %d/%d\n", ep->name, + status, req->actual, req->length); +#endif + case -EREMOTEIO: /* short read */ + break; + } + + status = usb_ep_queue(ep, req, GFP_ATOMIC); + if (status) { + ERROR(cdev, "kill %s: resubmit %d bytes --> %d\n", + ep->name, req->length, status); + usb_ep_set_halt(ep); + /* FIXME recover later ... somehow */ + } +} + +static int source_sink_start_ep(struct f_sourcesink *ss, bool is_in) +{ + struct usb_ep *ep; + struct usb_request *req; + int status; + + ep = is_in ? ss->in_ep : ss->out_ep; + req = alloc_ep_req(ep); + if (!req) + return -ENOMEM; + + req->complete = source_sink_complete; + if (is_in) + reinit_write_data(ep, req); + else + memset(req->buf, 0x55, req->length); + + status = usb_ep_queue(ep, req, GFP_ATOMIC); + if (status) { + struct usb_composite_dev *cdev; + + cdev = ss->function.config->cdev; + ERROR(cdev, "start %s %s --> %d\n", + is_in ? "IN" : "OUT", + ep->name, status); + free_ep_req(ep, req); + } + + return status; +} + +static void disable_source_sink(struct f_sourcesink *ss) +{ + struct usb_composite_dev *cdev; + + cdev = ss->function.config->cdev; + disable_endpoints(cdev, ss->in_ep, ss->out_ep); + del_timer(&ss->resume); + VDBG(cdev, "%s disabled\n", ss->function.name); +} + +static int +enable_source_sink(struct usb_composite_dev *cdev, struct f_sourcesink *ss) +{ + int result = 0; + const struct usb_endpoint_descriptor *src, *sink; + struct usb_ep *ep; + + src = ep_choose(cdev->gadget, &hs_source_desc, &fs_source_desc); + sink = ep_choose(cdev->gadget, &hs_sink_desc, &fs_sink_desc); + + /* one endpoint writes (sources) zeroes IN (to the host) */ + ep = ss->in_ep; + result = usb_ep_enable(ep, src); + if (result < 0) + return result; + ep->driver_data = ss; + + result = source_sink_start_ep(ss, true); + if (result < 0) { +fail: + ep = ss->in_ep; + usb_ep_disable(ep); + ep->driver_data = NULL; + return result; + } + + /* one endpoint reads (sinks) anything OUT (from the host) */ + ep = ss->out_ep; + result = usb_ep_enable(ep, sink); + if (result < 0) + goto fail; + ep->driver_data = ss; + + result = source_sink_start_ep(ss, false); + if (result < 0) { + usb_ep_disable(ep); + ep->driver_data = NULL; + goto fail; + } + + DBG(cdev, "%s enabled\n", ss->function.name); + return result; +} + +static int sourcesink_set_alt(struct usb_function *f, + unsigned intf, unsigned alt) +{ + struct f_sourcesink *ss = func_to_ss(f); + struct usb_composite_dev *cdev = f->config->cdev; + + /* we know alt is zero */ + if (ss->in_ep->driver_data) + disable_source_sink(ss); + return enable_source_sink(cdev, ss); +} + +static void sourcesink_disable(struct usb_function *f) +{ + struct f_sourcesink *ss = func_to_ss(f); + + disable_source_sink(ss); +} + +static void sourcesink_suspend(struct usb_function *f) +{ + struct f_sourcesink *ss = func_to_ss(f); + struct usb_composite_dev *cdev = f->config->cdev; + + if (cdev->gadget->speed == USB_SPEED_UNKNOWN) + return; + + if (autoresume) { + mod_timer(&ss->resume, jiffies + (HZ * autoresume)); + DBG(cdev, "suspend, wakeup in %d seconds\n", autoresume); + } else + DBG(cdev, "%s\n", __func__); +} + +static void sourcesink_resume(struct usb_function *f) +{ + struct f_sourcesink *ss = func_to_ss(f); + struct usb_composite_dev *cdev = f->config->cdev; + + DBG(cdev, "%s\n", __func__); + del_timer(&ss->resume); +} + +/*-------------------------------------------------------------------------*/ + +static int __init sourcesink_bind_config(struct usb_configuration *c) +{ + struct f_sourcesink *ss; + int status; + + ss = kzalloc(sizeof *ss, GFP_KERNEL); + if (!ss) + return -ENOMEM; + + ss->function.name = "source/sink"; + ss->function.descriptors = fs_source_sink_descs; + ss->function.bind = sourcesink_bind; + ss->function.unbind = sourcesink_unbind; + ss->function.set_alt = sourcesink_set_alt; + ss->function.disable = sourcesink_disable; + ss->function.suspend = sourcesink_suspend; + ss->function.resume = sourcesink_resume; + + status = usb_add_function(c, &ss->function); + if (status) + kfree(ss); + return status; +} + +static int sourcesink_setup(struct usb_configuration *c, + const struct usb_ctrlrequest *ctrl) +{ + struct usb_request *req = c->cdev->req; + int value = -EOPNOTSUPP; + u16 w_index = le16_to_cpu(ctrl->wIndex); + u16 w_value = le16_to_cpu(ctrl->wValue); + u16 w_length = le16_to_cpu(ctrl->wLength); + + /* composite driver infrastructure handles everything except + * the two control test requests. + */ + switch (ctrl->bRequest) { + + /* + * These are the same vendor-specific requests supported by + * Intel's USB 2.0 compliance test devices. We exceed that + * device spec by allowing multiple-packet requests. + * + * NOTE: the Control-OUT data stays in req->buf ... better + * would be copying it into a scratch buffer, so that other + * requests may safely intervene. + */ + case 0x5b: /* control WRITE test -- fill the buffer */ + if (ctrl->bRequestType != (USB_DIR_OUT|USB_TYPE_VENDOR)) + goto unknown; + if (w_value || w_index) + break; + /* just read that many bytes into the buffer */ + if (w_length > req->length) + break; + value = w_length; + break; + case 0x5c: /* control READ test -- return the buffer */ + if (ctrl->bRequestType != (USB_DIR_IN|USB_TYPE_VENDOR)) + goto unknown; + if (w_value || w_index) + break; + /* expect those bytes are still in the buffer; send back */ + if (w_length > req->length) + break; + value = w_length; + break; + + default: +unknown: + VDBG(c->cdev, + "unknown control req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + } + + /* respond with data transfer or status phase? */ + if (value >= 0) { + VDBG(c->cdev, "source/sink req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + req->zero = 0; + req->length = value; + value = usb_ep_queue(c->cdev->gadget->ep0, req, GFP_ATOMIC); + if (value < 0) + ERROR(c->cdev, "source/sinkc response, err %d\n", + value); + } + + /* device either stalls (value < 0) or reports success */ + return value; +} + +static struct usb_configuration sourcesink_driver = { + .label = "source/sink", + .strings = sourcesink_strings, + .bind = sourcesink_bind_config, + .setup = sourcesink_setup, + .bConfigurationValue = 3, + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + .bMaxPower = 1, /* 2 mA, minimal */ + /* .iConfiguration = DYNAMIC */ +}; + +/** + * sourcesink_add - add a source/sink testing configuration to a device + * @cdev: the device to support the configuration + */ +int __init sourcesink_add(struct usb_composite_dev *cdev) +{ + int id; + + /* allocate string ID(s) */ + id = usb_string_id(cdev); + if (id < 0) + return id; + strings_sourcesink[0].id = id; + + source_sink_intf.iInterface = id; + sourcesink_driver.iConfiguration = id; + + /* support autoresume for remote wakeup testing */ + if (autoresume) + sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + + /* support OTG systems */ + if (gadget_is_otg(cdev->gadget)) { + sourcesink_driver.descriptors = otg_desc; + sourcesink_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } + + return usb_add_config(cdev, &sourcesink_driver); +} diff --git a/drivers/usb/gadget/f_subset.c b/drivers/usb/gadget/f_subset.c new file mode 100644 index 00000000000..afeab9a0523 --- /dev/null +++ b/drivers/usb/gadget/f_subset.c @@ -0,0 +1,423 @@ +/* + * f_subset.c -- "CDC Subset" Ethernet link function driver + * + * Copyright (C) 2003-2005,2008 David Brownell + * Copyright (C) 2008 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/etherdevice.h> + +#include "u_ether.h" + + +/* + * This function packages a simple "CDC Subset" Ethernet port with no real + * control mechanisms; just raw data transfer over two bulk endpoints. + * The data transfer model is exactly that of CDC Ethernet, which is + * why we call it the "CDC Subset". + * + * Because it's not standardized, this has some interoperability issues. + * They mostly relate to driver binding, since the data transfer model is + * so simple (CDC Ethernet). The original versions of this protocol used + * specific product/vendor IDs: byteswapped IDs for Digital Equipment's + * SA-1100 "Itsy" board, which could run Linux 2.4 kernels and supported + * daughtercards with USB peripheral connectors. (It was used more often + * with other boards, using the Itsy identifiers.) Linux hosts recognized + * this with CONFIG_USB_ARMLINUX; these devices have only one configuration + * and one interface. + * + * At some point, MCCI defined a (nonconformant) CDC MDLM variant called + * "SAFE", which happens to have a mode which is identical to the "CDC + * Subset" in terms of data transfer and lack of control model. This was + * adopted by later Sharp Zaurus models, and by some other software which + * Linux hosts recognize with CONFIG_USB_NET_ZAURUS. + * + * Because Microsoft's RNDIS drivers are far from robust, we added a few + * descriptors to the CDC Subset code, making this code look like a SAFE + * implementation. This lets you use MCCI's host side MS-Windows drivers + * if you get fed up with RNDIS. It also makes it easier for composite + * drivers to work, since they can use class based binding instead of + * caring about specific product and vendor IDs. + */ + +struct geth_descs { + struct usb_endpoint_descriptor *in; + struct usb_endpoint_descriptor *out; +}; + +struct f_gether { + struct gether port; + + char ethaddr[14]; + + struct usb_descriptor_header **fs_function; + struct geth_descs fs; + struct usb_descriptor_header **hs_function; + struct geth_descs hs; +}; + +static inline struct f_gether *func_to_geth(struct usb_function *f) +{ + return container_of(f, struct f_gether, port.func); +} + +/*-------------------------------------------------------------------------*/ + +/* + * "Simple" CDC-subset option is a simple vendor-neutral model that most + * full speed controllers can handle: one interface, two bulk endpoints. + * To assist host side drivers, we fancy it up a bit, and add descriptors so + * some host side drivers will understand it as a "SAFE" variant. + * + * "SAFE" loosely follows CDC WMC MDLM, violating the spec in various ways. + * Data endpoints live in the control interface, there's no data interface. + * And it's not used to talk to a cell phone radio. + */ + +/* interface descriptor: */ + +static struct usb_interface_descriptor subset_data_intf __initdata = { + .bLength = sizeof subset_data_intf, + .bDescriptorType = USB_DT_INTERFACE, + + /* .bInterfaceNumber = DYNAMIC */ + .bAlternateSetting = 0, + .bNumEndpoints = 2, + .bInterfaceClass = USB_CLASS_COMM, + .bInterfaceSubClass = USB_CDC_SUBCLASS_MDLM, + .bInterfaceProtocol = 0, + /* .iInterface = DYNAMIC */ +}; + +static struct usb_cdc_header_desc header_desc __initdata = { + .bLength = sizeof header_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_HEADER_TYPE, + + .bcdCDC = __constant_cpu_to_le16(0x0110), +}; + +static struct usb_cdc_mdlm_desc mdlm_desc __initdata = { + .bLength = sizeof mdlm_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_MDLM_TYPE, + + .bcdVersion = __constant_cpu_to_le16(0x0100), + .bGUID = { + 0x5d, 0x34, 0xcf, 0x66, 0x11, 0x18, 0x11, 0xd6, + 0xa2, 0x1a, 0x00, 0x01, 0x02, 0xca, 0x9a, 0x7f, + }, +}; + +/* since "usb_cdc_mdlm_detail_desc" is a variable length structure, we + * can't really use its struct. All we do here is say that we're using + * the submode of "SAFE" which directly matches the CDC Subset. + */ +static u8 mdlm_detail_desc[] __initdata = { + 6, + USB_DT_CS_INTERFACE, + USB_CDC_MDLM_DETAIL_TYPE, + + 0, /* "SAFE" */ + 0, /* network control capabilities (none) */ + 0, /* network data capabilities ("raw" encapsulation) */ +}; + +static struct usb_cdc_ether_desc ether_desc __initdata = { + .bLength = sizeof ether_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_ETHERNET_TYPE, + + /* this descriptor actually adds value, surprise! */ + /* .iMACAddress = DYNAMIC */ + .bmEthernetStatistics = __constant_cpu_to_le32(0), /* no statistics */ + .wMaxSegmentSize = __constant_cpu_to_le16(ETH_FRAME_LEN), + .wNumberMCFilters = __constant_cpu_to_le16(0), + .bNumberPowerFilters = 0, +}; + +/* full speed support: */ + +static struct usb_endpoint_descriptor fs_in_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor fs_out_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_descriptor_header *fs_eth_function[] __initdata = { + (struct usb_descriptor_header *) &subset_data_intf, + (struct usb_descriptor_header *) &header_desc, + (struct usb_descriptor_header *) &mdlm_desc, + (struct usb_descriptor_header *) &mdlm_detail_desc, + (struct usb_descriptor_header *) ðer_desc, + (struct usb_descriptor_header *) &fs_in_desc, + (struct usb_descriptor_header *) &fs_out_desc, + NULL, +}; + +/* high speed support: */ + +static struct usb_endpoint_descriptor hs_in_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor hs_out_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = __constant_cpu_to_le16(512), +}; + +static struct usb_descriptor_header *hs_eth_function[] __initdata = { + (struct usb_descriptor_header *) &subset_data_intf, + (struct usb_descriptor_header *) &header_desc, + (struct usb_descriptor_header *) &mdlm_desc, + (struct usb_descriptor_header *) &mdlm_detail_desc, + (struct usb_descriptor_header *) ðer_desc, + (struct usb_descriptor_header *) &hs_in_desc, + (struct usb_descriptor_header *) &hs_out_desc, + NULL, +}; + +/* string descriptors: */ + +static struct usb_string geth_string_defs[] = { + [0].s = "CDC Ethernet Subset/SAFE", + [1].s = NULL /* DYNAMIC */, + { } /* end of list */ +}; + +static struct usb_gadget_strings geth_string_table = { + .language = 0x0409, /* en-us */ + .strings = geth_string_defs, +}; + +static struct usb_gadget_strings *geth_strings[] = { + &geth_string_table, + NULL, +}; + +/*-------------------------------------------------------------------------*/ + +static int geth_set_alt(struct usb_function *f, unsigned intf, unsigned alt) +{ + struct f_gether *geth = func_to_geth(f); + struct usb_composite_dev *cdev = f->config->cdev; + struct net_device *net; + + /* we know alt == 0, so this is an activation or a reset */ + + if (geth->port.in_ep->driver_data) { + DBG(cdev, "reset cdc subset\n"); + gether_disconnect(&geth->port); + } + + DBG(cdev, "init + activate cdc subset\n"); + geth->port.in = ep_choose(cdev->gadget, + geth->hs.in, geth->fs.in); + geth->port.out = ep_choose(cdev->gadget, + geth->hs.out, geth->fs.out); + + net = gether_connect(&geth->port); + return IS_ERR(net) ? PTR_ERR(net) : 0; +} + +static void geth_disable(struct usb_function *f) +{ + struct f_gether *geth = func_to_geth(f); + struct usb_composite_dev *cdev = f->config->cdev; + + DBG(cdev, "net deactivated\n"); + gether_disconnect(&geth->port); +} + +/*-------------------------------------------------------------------------*/ + +/* serial function driver setup/binding */ + +static int __init +geth_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct f_gether *geth = func_to_geth(f); + int status; + struct usb_ep *ep; + + /* allocate instance-specific interface IDs */ + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + subset_data_intf.bInterfaceNumber = status; + + status = -ENODEV; + + /* allocate instance-specific endpoints */ + ep = usb_ep_autoconfig(cdev->gadget, &fs_in_desc); + if (!ep) + goto fail; + geth->port.in_ep = ep; + ep->driver_data = cdev; /* claim */ + + ep = usb_ep_autoconfig(cdev->gadget, &fs_out_desc); + if (!ep) + goto fail; + geth->port.out_ep = ep; + ep->driver_data = cdev; /* claim */ + + /* copy descriptors, and track endpoint copies */ + f->descriptors = usb_copy_descriptors(fs_eth_function); + + geth->fs.in = usb_find_endpoint(fs_eth_function, + f->descriptors, &fs_in_desc); + geth->fs.out = usb_find_endpoint(fs_eth_function, + f->descriptors, &fs_out_desc); + + + /* support all relevant hardware speeds... we expect that when + * hardware is dual speed, all bulk-capable endpoints work at + * both speeds + */ + if (gadget_is_dualspeed(c->cdev->gadget)) { + hs_in_desc.bEndpointAddress = + fs_in_desc.bEndpointAddress; + hs_out_desc.bEndpointAddress = + fs_out_desc.bEndpointAddress; + + /* copy descriptors, and track endpoint copies */ + f->hs_descriptors = usb_copy_descriptors(hs_eth_function); + + geth->hs.in = usb_find_endpoint(hs_eth_function, + f->hs_descriptors, &hs_in_desc); + geth->hs.out = usb_find_endpoint(hs_eth_function, + f->hs_descriptors, &hs_out_desc); + } + + /* NOTE: all that is done without knowing or caring about + * the network link ... which is unavailable to this code + * until we're activated via set_alt(). + */ + + DBG(cdev, "CDC Subset: %s speed IN/%s OUT/%s\n", + gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + geth->port.in_ep->name, geth->port.out_ep->name); + return 0; + +fail: + /* we might as well release our claims on endpoints */ + if (geth->port.out) + geth->port.out_ep->driver_data = NULL; + if (geth->port.in) + geth->port.in_ep->driver_data = NULL; + + ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); + + return status; +} + +static void +geth_unbind(struct usb_configuration *c, struct usb_function *f) +{ + if (gadget_is_dualspeed(c->cdev->gadget)) + usb_free_descriptors(f->hs_descriptors); + usb_free_descriptors(f->descriptors); + geth_string_defs[1].s = NULL; + kfree(func_to_geth(f)); +} + +/** + * geth_bind_config - add CDC Subset network link to a configuration + * @c: the configuration to support the network link + * @ethaddr: a buffer in which the ethernet address of the host side + * side of the link was recorded + * Context: single threaded during gadget setup + * + * Returns zero on success, else negative errno. + * + * Caller must have called @gether_setup(). Caller is also responsible + * for calling @gether_cleanup() before module unload. + */ +int __init geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) +{ + struct f_gether *geth; + int status; + + if (!ethaddr) + return -EINVAL; + + /* maybe allocate device-global string IDs */ + if (geth_string_defs[0].id == 0) { + + /* interface label */ + status = usb_string_id(c->cdev); + if (status < 0) + return status; + geth_string_defs[0].id = status; + subset_data_intf.iInterface = status; + + /* MAC address */ + status = usb_string_id(c->cdev); + if (status < 0) + return status; + geth_string_defs[1].id = status; + ether_desc.iMACAddress = status; + } + + /* allocate and initialize one new instance */ + geth = kzalloc(sizeof *geth, GFP_KERNEL); + if (!geth) + return -ENOMEM; + + /* export host's Ethernet address in CDC format */ + snprintf(geth->ethaddr, sizeof geth->ethaddr, + "%02X%02X%02X%02X%02X%02X", + ethaddr[0], ethaddr[1], ethaddr[2], + ethaddr[3], ethaddr[4], ethaddr[5]); + geth_string_defs[1].s = geth->ethaddr; + + geth->port.cdc_filter = DEFAULT_FILTER; + + geth->port.func.name = "cdc_subset"; + geth->port.func.strings = geth_strings; + geth->port.func.bind = geth_bind; + geth->port.func.unbind = geth_unbind; + geth->port.func.set_alt = geth_set_alt; + geth->port.func.disable = geth_disable; + + status = usb_add_function(c, &geth->port.func); + if (status) { + geth_string_defs[1].s = NULL; + kfree(geth); + } + return status; +} diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c index 47bb9f09a1a..15c24edbb61 100644 --- a/drivers/usb/gadget/file_storage.c +++ b/drivers/usb/gadget/file_storage.c @@ -3867,8 +3867,8 @@ static int __init fsg_bind(struct usb_gadget *gadget) curlun->dev.parent = &gadget->dev; curlun->dev.driver = &fsg_driver.driver; dev_set_drvdata(&curlun->dev, fsg); - snprintf(curlun->dev.bus_id, BUS_ID_SIZE, - "%s-lun%d", gadget->dev.bus_id, i); + dev_set_name(&curlun->dev,"%s-lun%d", + dev_name(&gadget->dev), i); if ((rc = device_register(&curlun->dev)) != 0) { INFO(fsg, "failed to register LUN%d: %d\n", i, rc); diff --git a/drivers/usb/gadget/fsl_usb2_udc.c b/drivers/usb/gadget/fsl_usb2_udc.c index 18687543d7f..1695382f30f 100644 --- a/drivers/usb/gadget/fsl_usb2_udc.c +++ b/drivers/usb/gadget/fsl_usb2_udc.c @@ -2331,7 +2331,7 @@ static int __init fsl_udc_probe(struct platform_device *pdev) udc_controller->gadget.name = driver_name; /* Setup gadget.dev and register with kernel */ - strcpy(udc_controller->gadget.dev.bus_id, "gadget"); + dev_set_name(&udc_controller->gadget.dev, "gadget"); udc_controller->gadget.dev.release = fsl_udc_release; udc_controller->gadget.dev.parent = &pdev->dev; ret = device_register(&udc_controller->gadget.dev); diff --git a/drivers/usb/gadget/g_zero.h b/drivers/usb/gadget/g_zero.h new file mode 100644 index 00000000000..dd2f16ad5a8 --- /dev/null +++ b/drivers/usb/gadget/g_zero.h @@ -0,0 +1,25 @@ +/* + * This header declares the utility functions used by "Gadget Zero", plus + * interfaces to its two single-configuration function drivers. + */ + +#ifndef __G_ZERO_H +#define __G_ZERO_H + +#include <linux/usb/composite.h> + +/* global state */ +extern unsigned buflen; +extern const struct usb_descriptor_header *otg_desc[]; + +/* common utilities */ +struct usb_request *alloc_ep_req(struct usb_ep *ep); +void free_ep_req(struct usb_ep *ep, struct usb_request *req); +void disable_endpoints(struct usb_composite_dev *cdev, + struct usb_ep *in, struct usb_ep *out); + +/* configuration-specific linkup */ +int sourcesink_add(struct usb_composite_dev *cdev); +int loopback_add(struct usb_composite_dev *cdev); + +#endif /* __G_ZERO_H */ diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h index ca5149ea731..5246e8fef2b 100644 --- a/drivers/usb/gadget/gadget_chips.h +++ b/drivers/usb/gadget/gadget_chips.h @@ -214,3 +214,26 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget) return 0x21; return -ENOENT; } + + +/** + * gadget_supports_altsettings - return true if altsettings work + * @gadget: the gadget in question + */ +static inline bool gadget_supports_altsettings(struct usb_gadget *gadget) +{ + /* PXA 21x/25x/26x has no altsettings at all */ + if (gadget_is_pxa(gadget)) + return false; + + /* PXA 27x and 3xx have *broken* altsetting support */ + if (gadget_is_pxa27x(gadget)) + return false; + + /* SH3 hardware just doesn't do altsettings */ + if (gadget_is_sh(gadget)) + return false; + + /* Everything else is *presumably* fine ... */ + return true; +} diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c index be6613afedb..48f1c63b701 100644 --- a/drivers/usb/gadget/goku_udc.c +++ b/drivers/usb/gadget/goku_udc.c @@ -1790,7 +1790,7 @@ static int goku_probe(struct pci_dev *pdev, const struct pci_device_id *id) dev->gadget.ops = &goku_ops; /* the "gadget" abstracts/virtualizes the controller */ - strcpy(dev->gadget.dev.bus_id, "gadget"); + dev_set_name(&dev->gadget.dev, "gadget"); dev->gadget.dev.parent = &pdev->dev; dev->gadget.dev.dma_mask = pdev->dev.dma_mask; dev->gadget.dev.release = gadget_release; diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c index f132a9219e1..04692d59fc1 100644 --- a/drivers/usb/gadget/inode.c +++ b/drivers/usb/gadget/inode.c @@ -32,6 +32,7 @@ #include <asm/uaccess.h> #include <linux/slab.h> #include <linux/poll.h> +#include <linux/smp_lock.h> #include <linux/device.h> #include <linux/moduleparam.h> @@ -483,8 +484,7 @@ ep_release (struct inode *inode, struct file *fd) return 0; } -static int ep_ioctl (struct inode *inode, struct file *fd, - unsigned code, unsigned long value) +static long ep_ioctl(struct file *fd, unsigned code, unsigned long value) { struct ep_data *data = fd->private_data; int status; @@ -740,7 +740,7 @@ static const struct file_operations ep_io_operations = { .read = ep_read, .write = ep_write, - .ioctl = ep_ioctl, + .unlocked_ioctl = ep_ioctl, .release = ep_release, .aio_read = ep_aio_read, @@ -1294,15 +1294,18 @@ out: return mask; } -static int dev_ioctl (struct inode *inode, struct file *fd, - unsigned code, unsigned long value) +static long dev_ioctl (struct file *fd, unsigned code, unsigned long value) { struct dev_data *dev = fd->private_data; struct usb_gadget *gadget = dev->gadget; + long ret = -ENOTTY; - if (gadget->ops->ioctl) - return gadget->ops->ioctl (gadget, code, value); - return -ENOTTY; + if (gadget->ops->ioctl) { + lock_kernel(); + ret = gadget->ops->ioctl (gadget, code, value); + unlock_kernel(); + } + return ret; } /* used after device configuration */ @@ -1314,7 +1317,7 @@ static const struct file_operations ep0_io_operations = { .write = ep0_write, .fasync = ep0_fasync, .poll = ep0_poll, - .ioctl = dev_ioctl, + .unlocked_ioctl = dev_ioctl, .release = dev_release, }; @@ -1964,7 +1967,7 @@ static const struct file_operations dev_init_operations = { .open = dev_open, .write = dev_config, .fasync = ep0_fasync, - .ioctl = dev_ioctl, + .unlocked_ioctl = dev_ioctl, .release = dev_release, }; diff --git a/drivers/usb/gadget/lh7a40x_udc.c b/drivers/usb/gadget/lh7a40x_udc.c index 825abd2621b..c6e7df04c69 100644 --- a/drivers/usb/gadget/lh7a40x_udc.c +++ b/drivers/usb/gadget/lh7a40x_udc.c @@ -1970,7 +1970,7 @@ static const struct usb_gadget_ops lh7a40x_udc_ops = { static void nop_release(struct device *dev) { - DEBUG("%s %s\n", __func__, dev->bus_id); + DEBUG("%s %s\n", __func__, dev_name(dev)); } static struct lh7a40x_udc memory = { diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c index ee6b35fa870..8da7535c0c7 100644 --- a/drivers/usb/gadget/m66592-udc.c +++ b/drivers/usb/gadget/m66592-udc.c @@ -1593,7 +1593,7 @@ static int __init m66592_probe(struct platform_device *pdev) m66592->gadget.ops = &m66592_gadget_ops; device_initialize(&m66592->gadget.dev); - strcpy(m66592->gadget.dev.bus_id, "gadget"); + dev_set_name(&m66592->gadget, "gadget"); m66592->gadget.is_dualspeed = 1; m66592->gadget.dev.parent = &pdev->dev; m66592->gadget.dev.dma_mask = pdev->dev.dma_mask; diff --git a/drivers/usb/gadget/ndis.h b/drivers/usb/gadget/ndis.h index 09e3ee4eeae..df886cec5ef 100644 --- a/drivers/usb/gadget/ndis.h +++ b/drivers/usb/gadget/ndis.h @@ -1,11 +1,11 @@ /* - * ndis.h - * + * ndis.h + * * ntddndis.h modified by Benedikt Spranger <b.spranger@pengutronix.de> - * - * Thanks to the cygwin development team, + * + * Thanks to the cygwin development team, * espacially to Casper S. Hornstrup <chorns@users.sourceforge.net> - * + * * THIS SOFTWARE IS NOT COPYRIGHTED * * This source code is offered for use in the public domain. You may diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c index e0186230016..b67ab677af7 100644 --- a/drivers/usb/gadget/net2280.c +++ b/drivers/usb/gadget/net2280.c @@ -2768,7 +2768,7 @@ static int net2280_probe (struct pci_dev *pdev, const struct pci_device_id *id) dev->gadget.is_dualspeed = 1; /* the "gadget" abstracts/virtualizes the controller */ - strcpy (dev->gadget.dev.bus_id, "gadget"); + dev_set_name(&dev->gadget.dev, "gadget"); dev->gadget.dev.parent = &pdev->dev; dev->gadget.dev.dma_mask = pdev->dev.dma_mask; dev->gadget.dev.release = gadget_release; diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c index 03a7f49d207..4b79a8509e8 100644 --- a/drivers/usb/gadget/omap_udc.c +++ b/drivers/usb/gadget/omap_udc.c @@ -2686,7 +2686,7 @@ omap_udc_setup(struct platform_device *odev, struct otg_transceiver *xceiv) udc->gadget.name = driver_name; device_initialize(&udc->gadget.dev); - strcpy (udc->gadget.dev.bus_id, "gadget"); + dev_set_name(&udc->gadget.dev, "gadget"); udc->gadget.dev.release = omap_udc_release; udc->gadget.dev.parent = &odev->dev; if (use_dma) diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c index ec8f2eb041c..9caaec3ae9a 100644 --- a/drivers/usb/gadget/printer.c +++ b/drivers/usb/gadget/printer.c @@ -828,9 +828,8 @@ printer_poll(struct file *fd, poll_table *wait) return status; } -static int -printer_ioctl(struct inode *inode, struct file *fd, unsigned int code, - unsigned long arg) +static long +printer_ioctl(struct file *fd, unsigned int code, unsigned long arg) { struct printer_dev *dev = fd->private_data; unsigned long flags; @@ -869,7 +868,7 @@ static struct file_operations printer_io_operations = { .write = printer_write, .fsync = printer_fsync, .poll = printer_poll, - .ioctl = printer_ioctl, + .unlocked_ioctl = printer_ioctl, .release = printer_close }; diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c index 031dceb9302..fbd6289977c 100644 --- a/drivers/usb/gadget/pxa25x_udc.c +++ b/drivers/usb/gadget/pxa25x_udc.c @@ -1818,7 +1818,7 @@ pxa25x_udc_irq(int irq, void *_dev) static void nop_release (struct device *dev) { - DMSG("%s %s\n", __func__, dev->bus_id); + DMSG("%s %s\n", __func__, dev_name(dev)); } /* this uses load-time allocation and initialization (instead of diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c index 9c0e82ec5c4..9d447d8cfc0 100644 --- a/drivers/usb/gadget/pxa27x_udc.c +++ b/drivers/usb/gadget/pxa27x_udc.c @@ -1575,7 +1575,6 @@ static void udc_enable(struct pxa_udc *udc) { udc_writel(udc, UDCICR0, 0); udc_writel(udc, UDCICR1, 0); - udc_writel(udc, UP2OCR, UP2OCR_HXOE); udc_clear_mask_UDCCR(udc, UDCCR_UDE); clk_enable(udc->clk); diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c index d0677f5d3cd..7228e856223 100644 --- a/drivers/usb/gadget/rndis.c +++ b/drivers/usb/gadget/rndis.c @@ -1,8 +1,6 @@ /* * RNDIS MSG parser * - * Version: $Id: rndis.c,v 1.19 2004/03/25 21:33:46 robert Exp $ - * * Authors: Benedikt Spranger, Pengutronix * Robert Schwebel, Pengutronix * @@ -30,6 +28,7 @@ #include <linux/init.h> #include <linux/list.h> #include <linux/proc_fs.h> +#include <linux/seq_file.h> #include <linux/netdevice.h> #include <asm/io.h> @@ -38,9 +37,7 @@ #include <asm/unaligned.h> -#undef RNDIS_PM -#undef RNDIS_WAKEUP -#undef VERBOSE +#undef VERBOSE_DEBUG #include "rndis.h" @@ -96,9 +93,6 @@ static const u32 oid_supported_list [] = OID_GEN_MAXIMUM_TOTAL_SIZE, OID_GEN_MEDIA_CONNECT_STATUS, OID_GEN_PHYSICAL_MEDIUM, -#if 0 - OID_GEN_RNDIS_CONFIG_PARAMETER, -#endif /* the statistical stuff */ OID_GEN_XMIT_OK, @@ -146,7 +140,14 @@ static const u32 oid_supported_list [] = #endif /* RNDIS_OPTIONAL_STATS */ #ifdef RNDIS_PM - /* PM and wakeup are mandatory for USB: */ + /* PM and wakeup are "mandatory" for USB, but the RNDIS specs + * don't say what they mean ... and the NDIS specs are often + * confusing and/or ambiguous in this context. (That is, more + * so than their specs for the other OIDs.) + * + * FIXME someone who knows what these should do, please + * implement them! + */ /* power management */ OID_PNP_CAPABILITIES, @@ -173,6 +174,8 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len, __le32 *outbuf; int i, count; rndis_query_cmplt_type *resp; + struct net_device *net; + struct net_device_stats *stats; if (!r) return -ENOMEM; resp = (rndis_query_cmplt_type *) r->buf; @@ -194,6 +197,12 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len, outbuf = (__le32 *) &resp[1]; resp->InformationBufferOffset = __constant_cpu_to_le32 (16); + net = rndis_per_dev_params[configNr].dev; + if (net->get_stats) + stats = net->get_stats(net); + else + stats = NULL; + switch (OID) { /* general oids (table 4-1) */ @@ -350,11 +359,9 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len, case OID_GEN_XMIT_OK: if (rndis_debug > 1) DBG("%s: OID_GEN_XMIT_OK\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 ( - rndis_per_dev_params [configNr].stats->tx_packets - - rndis_per_dev_params [configNr].stats->tx_errors - - rndis_per_dev_params [configNr].stats->tx_dropped); + if (stats) { + *outbuf = cpu_to_le32(stats->tx_packets + - stats->tx_errors - stats->tx_dropped); retval = 0; } break; @@ -363,11 +370,9 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len, case OID_GEN_RCV_OK: if (rndis_debug > 1) DBG("%s: OID_GEN_RCV_OK\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 ( - rndis_per_dev_params [configNr].stats->rx_packets - - rndis_per_dev_params [configNr].stats->rx_errors - - rndis_per_dev_params [configNr].stats->rx_dropped); + if (stats) { + *outbuf = cpu_to_le32(stats->rx_packets + - stats->rx_errors - stats->rx_dropped); retval = 0; } break; @@ -376,9 +381,8 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len, case OID_GEN_XMIT_ERROR: if (rndis_debug > 1) DBG("%s: OID_GEN_XMIT_ERROR\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] - .stats->tx_errors); + if (stats) { + *outbuf = cpu_to_le32(stats->tx_errors); retval = 0; } break; @@ -387,9 +391,8 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len, case OID_GEN_RCV_ERROR: if (rndis_debug > 1) DBG("%s: OID_GEN_RCV_ERROR\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] - .stats->rx_errors); + if (stats) { + *outbuf = cpu_to_le32(stats->rx_errors); retval = 0; } break; @@ -397,150 +400,12 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len, /* mandatory */ case OID_GEN_RCV_NO_BUFFER: DBG("%s: OID_GEN_RCV_NO_BUFFER\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] - .stats->rx_dropped); - retval = 0; - } - break; - -#ifdef RNDIS_OPTIONAL_STATS - case OID_GEN_DIRECTED_BYTES_XMIT: - DBG("%s: OID_GEN_DIRECTED_BYTES_XMIT\n", __func__); - /* - * Aunt Tilly's size of shoes - * minus antarctica count of penguins - * divided by weight of Alpha Centauri - */ - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 ( - (rndis_per_dev_params [configNr] - .stats->tx_packets - - rndis_per_dev_params [configNr] - .stats->tx_errors - - rndis_per_dev_params [configNr] - .stats->tx_dropped) - * 123); - retval = 0; - } - break; - - case OID_GEN_DIRECTED_FRAMES_XMIT: - DBG("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __func__); - /* dito */ - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 ( - (rndis_per_dev_params [configNr] - .stats->tx_packets - - rndis_per_dev_params [configNr] - .stats->tx_errors - - rndis_per_dev_params [configNr] - .stats->tx_dropped) - / 123); - retval = 0; - } - break; - - case OID_GEN_MULTICAST_BYTES_XMIT: - DBG("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] - .stats->multicast*1234); - retval = 0; - } - break; - - case OID_GEN_MULTICAST_FRAMES_XMIT: - DBG("%s: OID_GEN_MULTICAST_FRAMES_XMIT\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] - .stats->multicast); - retval = 0; - } - break; - - case OID_GEN_BROADCAST_BYTES_XMIT: - DBG("%s: OID_GEN_BROADCAST_BYTES_XMIT\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] - .stats->tx_packets/42*255); - retval = 0; - } - break; - - case OID_GEN_BROADCAST_FRAMES_XMIT: - DBG("%s: OID_GEN_BROADCAST_FRAMES_XMIT\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] - .stats->tx_packets/42); - retval = 0; - } - break; - - case OID_GEN_DIRECTED_BYTES_RCV: - DBG("%s: OID_GEN_DIRECTED_BYTES_RCV\n", __func__); - *outbuf = __constant_cpu_to_le32 (0); - retval = 0; - break; - - case OID_GEN_DIRECTED_FRAMES_RCV: - DBG("%s: OID_GEN_DIRECTED_FRAMES_RCV\n", __func__); - *outbuf = __constant_cpu_to_le32 (0); - retval = 0; - break; - - case OID_GEN_MULTICAST_BYTES_RCV: - DBG("%s: OID_GEN_MULTICAST_BYTES_RCV\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] - .stats->multicast * 1111); - retval = 0; - } - break; - - case OID_GEN_MULTICAST_FRAMES_RCV: - DBG("%s: OID_GEN_MULTICAST_FRAMES_RCV\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] - .stats->multicast); - retval = 0; - } - break; - - case OID_GEN_BROADCAST_BYTES_RCV: - DBG("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] - .stats->rx_packets/42*255); - retval = 0; - } - break; - - case OID_GEN_BROADCAST_FRAMES_RCV: - DBG("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] - .stats->rx_packets/42); + if (stats) { + *outbuf = cpu_to_le32(stats->rx_dropped); retval = 0; } break; - case OID_GEN_RCV_CRC_ERROR: - DBG("%s: OID_GEN_RCV_CRC_ERROR\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] - .stats->rx_crc_errors); - retval = 0; - } - break; - - case OID_GEN_TRANSMIT_QUEUE_LENGTH: - DBG("%s: OID_GEN_TRANSMIT_QUEUE_LENGTH\n", __func__); - *outbuf = __constant_cpu_to_le32 (0); - retval = 0; - break; -#endif /* RNDIS_OPTIONAL_STATS */ - /* ieee802.3 OIDs (table 4-3) */ /* mandatory */ @@ -592,9 +457,8 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len, /* mandatory */ case OID_802_3_RCV_ERROR_ALIGNMENT: DBG("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __func__); - if (rndis_per_dev_params [configNr].stats) { - *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] - .stats->rx_frame_errors); + if (stats) { + *outbuf = cpu_to_le32(stats->rx_frame_errors); retval = 0; } break; @@ -613,64 +477,6 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len, retval = 0; break; -#ifdef RNDIS_OPTIONAL_STATS - case OID_802_3_XMIT_DEFERRED: - DBG("%s: OID_802_3_XMIT_DEFERRED\n", __func__); - /* TODO */ - break; - - case OID_802_3_XMIT_MAX_COLLISIONS: - DBG("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __func__); - /* TODO */ - break; - - case OID_802_3_RCV_OVERRUN: - DBG("%s: OID_802_3_RCV_OVERRUN\n", __func__); - /* TODO */ - break; - - case OID_802_3_XMIT_UNDERRUN: - DBG("%s: OID_802_3_XMIT_UNDERRUN\n", __func__); - /* TODO */ - break; - - case OID_802_3_XMIT_HEARTBEAT_FAILURE: - DBG("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __func__); - /* TODO */ - break; - - case OID_802_3_XMIT_TIMES_CRS_LOST: - DBG("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __func__); - /* TODO */ - break; - - case OID_802_3_XMIT_LATE_COLLISIONS: - DBG("%s: OID_802_3_XMIT_LATE_COLLISIONS\n", __func__); - /* TODO */ - break; -#endif /* RNDIS_OPTIONAL_STATS */ - -#ifdef RNDIS_PM - /* power management OIDs (table 4-5) */ - case OID_PNP_CAPABILITIES: - DBG("%s: OID_PNP_CAPABILITIES\n", __func__); - - /* for now, no wakeup capabilities */ - length = sizeof (struct NDIS_PNP_CAPABILITIES); - memset(outbuf, 0, length); - retval = 0; - break; - case OID_PNP_QUERY_POWER: - DBG("%s: OID_PNP_QUERY_POWER D%d\n", __func__, - get_unaligned_le32(buf) - 1); - /* only suspend is a real power state, and - * it can't be entered by OID_PNP_SET_POWER... - */ - length = 0; - retval = 0; - break; -#endif - default: pr_warning("%s: query unknown OID 0x%08X\n", __func__, OID); @@ -726,9 +532,6 @@ static int gen_ndis_set_resp (u8 configNr, u32 OID, u8 *buf, u32 buf_len, * what makes the packet flow start and stop, like * activating the CDC Ethernet altsetting. */ -#ifdef RNDIS_PM -update_linkstate: -#endif retval = 0; if (*params->filter) { params->state = RNDIS_DATA_INITIALIZED; @@ -747,49 +550,6 @@ update_linkstate: DBG("%s: OID_802_3_MULTICAST_LIST\n", __func__); retval = 0; break; -#if 0 - case OID_GEN_RNDIS_CONFIG_PARAMETER: - { - struct rndis_config_parameter *param; - param = (struct rndis_config_parameter *) buf; - DBG("%s: OID_GEN_RNDIS_CONFIG_PARAMETER '%*s'\n", - __func__, - min(cpu_to_le32(param->ParameterNameLength),80), - buf + param->ParameterNameOffset); - retval = 0; - } - break; -#endif - -#ifdef RNDIS_PM - case OID_PNP_SET_POWER: - /* The only real power state is USB suspend, and RNDIS requests - * can't enter it; this one isn't really about power. After - * resuming, Windows forces a reset, and then SET_POWER D0. - * FIXME ... then things go batty; Windows wedges itself. - */ - i = get_unaligned_le32(buf); - DBG("%s: OID_PNP_SET_POWER D%d\n", __func__, i - 1); - switch (i) { - case NdisDeviceStateD0: - *params->filter = params->saved_filter; - goto update_linkstate; - case NdisDeviceStateD3: - case NdisDeviceStateD2: - case NdisDeviceStateD1: - params->saved_filter = *params->filter; - retval = 0; - break; - } - break; - -#ifdef RNDIS_WAKEUP - // no wakeup support advertised, so wakeup OIDs always fail: - // - OID_PNP_ENABLE_WAKE_UP - // - OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN -#endif - -#endif /* RNDIS_PM */ default: pr_warning("%s: set unknown OID 0x%08X, size %d\n", @@ -807,8 +567,10 @@ static int rndis_init_response (int configNr, rndis_init_msg_type *buf) { rndis_init_cmplt_type *resp; rndis_resp_t *r; + struct rndis_params *params = rndis_per_dev_params + configNr; - if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP; + if (!params->dev) + return -ENOTSUPP; r = rndis_add_response (configNr, sizeof (rndis_init_cmplt_type)); if (!r) @@ -826,7 +588,7 @@ static int rndis_init_response (int configNr, rndis_init_msg_type *buf) resp->Medium = __constant_cpu_to_le32 (RNDIS_MEDIUM_802_3); resp->MaxPacketsPerTransfer = __constant_cpu_to_le32 (1); resp->MaxTransferSize = cpu_to_le32 ( - rndis_per_dev_params [configNr].dev->mtu + params->dev->mtu + sizeof (struct ethhdr) + sizeof (struct rndis_packet_msg_type) + 22); @@ -834,10 +596,7 @@ static int rndis_init_response (int configNr, rndis_init_msg_type *buf) resp->AFListOffset = __constant_cpu_to_le32 (0); resp->AFListSize = __constant_cpu_to_le32 (0); - if (rndis_per_dev_params [configNr].ack) - rndis_per_dev_params [configNr].ack ( - rndis_per_dev_params [configNr].dev); - + params->resp_avail(params->v); return 0; } @@ -845,9 +604,11 @@ static int rndis_query_response (int configNr, rndis_query_msg_type *buf) { rndis_query_cmplt_type *resp; rndis_resp_t *r; + struct rndis_params *params = rndis_per_dev_params + configNr; // DBG("%s: OID = %08X\n", __func__, cpu_to_le32(buf->OID)); - if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP; + if (!params->dev) + return -ENOTSUPP; /* * we need more memory: @@ -878,9 +639,7 @@ static int rndis_query_response (int configNr, rndis_query_msg_type *buf) } else resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS); - if (rndis_per_dev_params [configNr].ack) - rndis_per_dev_params [configNr].ack ( - rndis_per_dev_params [configNr].dev); + params->resp_avail(params->v); return 0; } @@ -889,6 +648,7 @@ static int rndis_set_response (int configNr, rndis_set_msg_type *buf) u32 BufLength, BufOffset; rndis_set_cmplt_type *resp; rndis_resp_t *r; + struct rndis_params *params = rndis_per_dev_params + configNr; r = rndis_add_response (configNr, sizeof (rndis_set_cmplt_type)); if (!r) @@ -898,7 +658,7 @@ static int rndis_set_response (int configNr, rndis_set_msg_type *buf) BufLength = le32_to_cpu (buf->InformationBufferLength); BufOffset = le32_to_cpu (buf->InformationBufferOffset); -#ifdef VERBOSE +#ifdef VERBOSE_DEBUG DBG("%s: Length: %d\n", __func__, BufLength); DBG("%s: Offset: %d\n", __func__, BufOffset); DBG("%s: InfoBuffer: ", __func__); @@ -919,10 +679,7 @@ static int rndis_set_response (int configNr, rndis_set_msg_type *buf) else resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS); - if (rndis_per_dev_params [configNr].ack) - rndis_per_dev_params [configNr].ack ( - rndis_per_dev_params [configNr].dev); - + params->resp_avail(params->v); return 0; } @@ -930,6 +687,7 @@ static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf) { rndis_reset_cmplt_type *resp; rndis_resp_t *r; + struct rndis_params *params = rndis_per_dev_params + configNr; r = rndis_add_response (configNr, sizeof (rndis_reset_cmplt_type)); if (!r) @@ -942,10 +700,7 @@ static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf) /* resent information */ resp->AddressingReset = __constant_cpu_to_le32 (1); - if (rndis_per_dev_params [configNr].ack) - rndis_per_dev_params [configNr].ack ( - rndis_per_dev_params [configNr].dev); - + params->resp_avail(params->v); return 0; } @@ -954,6 +709,7 @@ static int rndis_keepalive_response (int configNr, { rndis_keepalive_cmplt_type *resp; rndis_resp_t *r; + struct rndis_params *params = rndis_per_dev_params + configNr; /* host "should" check only in RNDIS_DATA_INITIALIZED state */ @@ -968,10 +724,7 @@ static int rndis_keepalive_response (int configNr, resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS); - if (rndis_per_dev_params [configNr].ack) - rndis_per_dev_params [configNr].ack ( - rndis_per_dev_params [configNr].dev); - + params->resp_avail(params->v); return 0; } @@ -983,8 +736,9 @@ static int rndis_indicate_status_msg (int configNr, u32 status) { rndis_indicate_status_msg_type *resp; rndis_resp_t *r; + struct rndis_params *params = rndis_per_dev_params + configNr; - if (rndis_per_dev_params [configNr].state == RNDIS_UNINITIALIZED) + if (params->state == RNDIS_UNINITIALIZED) return -ENOTSUPP; r = rndis_add_response (configNr, @@ -1000,9 +754,7 @@ static int rndis_indicate_status_msg (int configNr, u32 status) resp->StatusBufferLength = __constant_cpu_to_le32 (0); resp->StatusBufferOffset = __constant_cpu_to_le32 (0); - if (rndis_per_dev_params [configNr].ack) - rndis_per_dev_params [configNr].ack ( - rndis_per_dev_params [configNr].dev); + params->resp_avail(params->v); return 0; } @@ -1029,7 +781,6 @@ void rndis_uninit (int configNr) if (configNr >= RNDIS_MAX_CONFIGS) return; - rndis_per_dev_params [configNr].used = 0; rndis_per_dev_params [configNr].state = RNDIS_UNINITIALIZED; /* drain the response queue */ @@ -1142,21 +893,25 @@ int rndis_msg_parser (u8 configNr, u8 *buf) return -ENOTSUPP; } -int rndis_register (int (* rndis_control_ack) (struct net_device *)) +int rndis_register(void (*resp_avail)(void *v), void *v) { u8 i; + if (!resp_avail) + return -EINVAL; + for (i = 0; i < RNDIS_MAX_CONFIGS; i++) { if (!rndis_per_dev_params [i].used) { rndis_per_dev_params [i].used = 1; - rndis_per_dev_params [i].ack = rndis_control_ack; + rndis_per_dev_params [i].resp_avail = resp_avail; + rndis_per_dev_params [i].v = v; DBG("%s: configNr = %d\n", __func__, i); return i; } } DBG("failed\n"); - return -1; + return -ENODEV; } void rndis_deregister (int configNr) @@ -1169,16 +924,14 @@ void rndis_deregister (int configNr) return; } -int rndis_set_param_dev (u8 configNr, struct net_device *dev, - struct net_device_stats *stats, - u16 *cdc_filter) +int rndis_set_param_dev(u8 configNr, struct net_device *dev, u16 *cdc_filter) { DBG("%s:\n", __func__ ); - if (!dev || !stats) return -1; + if (!dev) + return -EINVAL; if (configNr >= RNDIS_MAX_CONFIGS) return -1; rndis_per_dev_params [configNr].dev = dev; - rndis_per_dev_params [configNr].stats = stats; rndis_per_dev_params [configNr].filter = cdc_filter; return 0; @@ -1296,14 +1049,11 @@ int rndis_rm_hdr(struct sk_buff *skb) #ifdef CONFIG_USB_GADGET_DEBUG_FILES -static int rndis_proc_read (char *page, char **start, off_t off, int count, int *eof, - void *data) +static int rndis_proc_show(struct seq_file *m, void *v) { - char *out = page; - int len; - rndis_params *param = (rndis_params *) data; + rndis_params *param = m->private; - out += snprintf (out, count, + seq_printf(m, "Config Nr. %d\n" "used : %s\n" "state : %s\n" @@ -1326,25 +1076,13 @@ static int rndis_proc_read (char *page, char **start, off_t off, int count, int (param->media_state) ? 0 : param->speed*100, (param->media_state) ? "disconnected" : "connected", param->vendorID, param->vendorDescr); - - len = out - page; - len -= off; - - if (len < count) { - *eof = 1; - if (len <= 0) - return 0; - } else - len = count; - - *start = page + off; - return len; + return 0; } -static int rndis_proc_write (struct file *file, const char __user *buffer, - unsigned long count, void *data) +static ssize_t rndis_proc_write(struct file *file, const char __user *buffer, + size_t count, loff_t *ppos) { - rndis_params *p = data; + rndis_params *p = PDE(file->f_path.dentry->d_inode)->data; u32 speed = 0; int i, fl_speed = 0; @@ -1386,6 +1124,20 @@ static int rndis_proc_write (struct file *file, const char __user *buffer, return count; } +static int rndis_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, rndis_proc_show, PDE(inode)->data); +} + +static const struct file_operations rndis_proc_fops = { + .owner = THIS_MODULE, + .open = rndis_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .write = rndis_proc_write, +}; + #define NAME_TEMPLATE "driver/rndis-%03d" static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS]; @@ -1403,7 +1155,9 @@ int __init rndis_init (void) sprintf (name, NAME_TEMPLATE, i); if (!(rndis_connect_state [i] - = create_proc_entry (name, 0660, NULL))) + = proc_create_data(name, 0660, NULL, + &rndis_proc_fops, + (void *)(rndis_per_dev_params + i)))) { DBG("%s :remove entries", __func__); while (i) { @@ -1413,11 +1167,6 @@ int __init rndis_init (void) DBG("\n"); return -EIO; } - - rndis_connect_state [i]->write_proc = rndis_proc_write; - rndis_connect_state [i]->read_proc = rndis_proc_read; - rndis_connect_state [i]->data = (void *) - (rndis_per_dev_params + i); #endif rndis_per_dev_params [i].confignr = i; rndis_per_dev_params [i].used = 0; diff --git a/drivers/usb/gadget/rndis.h b/drivers/usb/gadget/rndis.h index 397b149f3ca..aac61dfe0f0 100644 --- a/drivers/usb/gadget/rndis.h +++ b/drivers/usb/gadget/rndis.h @@ -1,8 +1,6 @@ /* * RNDIS Definitions for Remote NDIS * - * Version: $Id: rndis.h,v 1.15 2004/03/25 21:33:46 robert Exp $ - * * Authors: Benedikt Spranger, Pengutronix * Robert Schwebel, Pengutronix * @@ -235,20 +233,19 @@ typedef struct rndis_params const u8 *host_mac; u16 *filter; struct net_device *dev; - struct net_device_stats *stats; u32 vendorID; const char *vendorDescr; - int (*ack) (struct net_device *); + void (*resp_avail)(void *v); + void *v; struct list_head resp_queue; } rndis_params; /* RNDIS Message parser and other useless functions */ int rndis_msg_parser (u8 configNr, u8 *buf); -int rndis_register (int (*rndis_control_ack) (struct net_device *)); +int rndis_register(void (*resp_avail)(void *v), void *v); void rndis_deregister (int configNr); int rndis_set_param_dev (u8 configNr, struct net_device *dev, - struct net_device_stats *stats, u16 *cdc_filter); int rndis_set_param_vendor (u8 configNr, u32 vendorID, const char *vendorDescr); diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c index fa019fa7333..b3699afff00 100644 --- a/drivers/usb/gadget/serial.c +++ b/drivers/usb/gadget/serial.c @@ -1,15 +1,9 @@ /* - * g_serial.c -- USB gadget serial driver + * serial.c -- USB gadget serial driver * - * Copyright 2003 (C) Al Borchers (alborchers@steinerpoint.com) - * - * This code is based in part on the Gadget Zero driver, which - * is Copyright (C) 2003 by David Brownell, all rights reserved. - * - * This code also borrows from usbserial.c, which is - * Copyright (C) 1999 - 2002 Greg Kroah-Hartman (greg@kroah.com) - * Copyright (C) 2000 Peter Berger (pberger@brimson.com) - * Copyright (C) 2000 Al Borchers (alborchers@steinerpoint.com) + * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com) + * Copyright (C) 2008 by David Brownell + * Copyright (C) 2008 by Nokia Corporation * * This software is distributed under the terms of the GNU General * Public License ("GPL") as published by the Free Software Foundation, @@ -22,2254 +16,237 @@ #include <linux/tty.h> #include <linux/tty_flip.h> -#include <linux/usb/ch9.h> -#include <linux/usb/cdc.h> -#include <linux/usb/gadget.h> - +#include "u_serial.h" #include "gadget_chips.h" /* Defines */ -#define GS_VERSION_STR "v2.2" -#define GS_VERSION_NUM 0x2200 +#define GS_VERSION_STR "v2.4" +#define GS_VERSION_NUM 0x2400 #define GS_LONG_NAME "Gadget Serial" -#define GS_SHORT_NAME "g_serial" - -#define GS_MAJOR 127 -#define GS_MINOR_START 0 - -/* REVISIT only one port is supported for now; - * see gs_{send,recv}_packet() ... no multiplexing, - * and no support for multiple ACM devices. - */ -#define GS_NUM_PORTS 1 - -#define GS_NUM_CONFIGS 1 -#define GS_NO_CONFIG_ID 0 -#define GS_BULK_CONFIG_ID 1 -#define GS_ACM_CONFIG_ID 2 - -#define GS_MAX_NUM_INTERFACES 2 -#define GS_BULK_INTERFACE_ID 0 -#define GS_CONTROL_INTERFACE_ID 0 -#define GS_DATA_INTERFACE_ID 1 - -#define GS_MAX_DESC_LEN 256 - -#define GS_DEFAULT_READ_Q_SIZE 32 -#define GS_DEFAULT_WRITE_Q_SIZE 32 - -#define GS_DEFAULT_WRITE_BUF_SIZE 8192 -#define GS_TMP_BUF_SIZE 8192 - -#define GS_CLOSE_TIMEOUT 15 - -#define GS_DEFAULT_USE_ACM 0 - -/* 9600-8-N-1 ... matches init_termios.c_cflag and defaults - * expected by "usbser.sys" on MS-Windows. - */ -#define GS_DEFAULT_DTE_RATE 9600 -#define GS_DEFAULT_DATA_BITS 8 -#define GS_DEFAULT_PARITY USB_CDC_NO_PARITY -#define GS_DEFAULT_CHAR_FORMAT USB_CDC_1_STOP_BITS - -/* maxpacket and other transfer characteristics vary by speed. */ -static inline struct usb_endpoint_descriptor * -choose_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs, - struct usb_endpoint_descriptor *fs) -{ - if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) - return hs; - return fs; -} - - -/* debug settings */ -#ifdef DEBUG -static int debug = 1; -#else -#define debug 0 -#endif - -#define gs_debug(format, arg...) \ - do { if (debug) pr_debug(format, ## arg); } while (0) -#define gs_debug_level(level, format, arg...) \ - do { if (debug >= level) pr_debug(format, ## arg); } while (0) +#define GS_VERSION_NAME GS_LONG_NAME " " GS_VERSION_STR +/*-------------------------------------------------------------------------*/ /* Thanks to NetChip Technologies for donating this product ID. - * - * DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! - * Instead: allocate your own, using normal USB-IF procedures. - */ +* +* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! +* Instead: allocate your own, using normal USB-IF procedures. +*/ #define GS_VENDOR_ID 0x0525 /* NetChip */ #define GS_PRODUCT_ID 0xa4a6 /* Linux-USB Serial Gadget */ #define GS_CDC_PRODUCT_ID 0xa4a7 /* ... as CDC-ACM */ -#define GS_LOG2_NOTIFY_INTERVAL 5 /* 1 << 5 == 32 msec */ -#define GS_NOTIFY_MAXPACKET 8 +/* string IDs are assigned dynamically */ +#define STRING_MANUFACTURER_IDX 0 +#define STRING_PRODUCT_IDX 1 +#define STRING_DESCRIPTION_IDX 2 -/* circular buffer */ -struct gs_buf { - unsigned int buf_size; - char *buf_buf; - char *buf_get; - char *buf_put; -}; +static char manufacturer[50]; -/* the port structure holds info for each port, one for each minor number */ -struct gs_port { - struct gs_dev *port_dev; /* pointer to device struct */ - struct tty_struct *port_tty; /* pointer to tty struct */ - spinlock_t port_lock; - int port_num; - int port_open_count; - int port_in_use; /* open/close in progress */ - wait_queue_head_t port_write_wait;/* waiting to write */ - struct gs_buf *port_write_buf; - struct usb_cdc_line_coding port_line_coding; /* 8-N-1 etc */ - u16 port_handshake_bits; -#define RS232_RTS (1 << 1) -#define RS232_DTE (1 << 0) +static struct usb_string strings_dev[] = { + [STRING_MANUFACTURER_IDX].s = manufacturer, + [STRING_PRODUCT_IDX].s = GS_VERSION_NAME, + [STRING_DESCRIPTION_IDX].s = NULL /* updated; f(use_acm) */, + { } /* end of list */ }; -/* the device structure holds info for the USB device */ -struct gs_dev { - struct usb_gadget *dev_gadget; /* gadget device pointer */ - spinlock_t dev_lock; /* lock for set/reset config */ - int dev_config; /* configuration number */ - struct usb_ep *dev_notify_ep; /* address of notify endpoint */ - struct usb_ep *dev_in_ep; /* address of in endpoint */ - struct usb_ep *dev_out_ep; /* address of out endpoint */ - struct usb_endpoint_descriptor /* descriptor of notify ep */ - *dev_notify_ep_desc; - struct usb_endpoint_descriptor /* descriptor of in endpoint */ - *dev_in_ep_desc; - struct usb_endpoint_descriptor /* descriptor of out endpoint */ - *dev_out_ep_desc; - struct usb_request *dev_ctrl_req; /* control request */ - struct list_head dev_req_list; /* list of write requests */ - int dev_sched_port; /* round robin port scheduled */ - struct gs_port *dev_port[GS_NUM_PORTS]; /* the ports */ +static struct usb_gadget_strings stringtab_dev = { + .language = 0x0409, /* en-us */ + .strings = strings_dev, }; - -/* Functions */ - -/* tty driver internals */ -static int gs_send(struct gs_dev *dev); -static int gs_send_packet(struct gs_dev *dev, char *packet, - unsigned int size); -static int gs_recv_packet(struct gs_dev *dev, char *packet, - unsigned int size); -static void gs_read_complete(struct usb_ep *ep, struct usb_request *req); -static void gs_write_complete(struct usb_ep *ep, struct usb_request *req); - -/* gadget driver internals */ -static int gs_set_config(struct gs_dev *dev, unsigned config); -static void gs_reset_config(struct gs_dev *dev); -static int gs_build_config_buf(u8 *buf, struct usb_gadget *g, - u8 type, unsigned int index, int is_otg); - -static struct usb_request *gs_alloc_req(struct usb_ep *ep, unsigned int len, - gfp_t kmalloc_flags); -static void gs_free_req(struct usb_ep *ep, struct usb_request *req); - -static int gs_alloc_ports(struct gs_dev *dev, gfp_t kmalloc_flags); -static void gs_free_ports(struct gs_dev *dev); - -/* circular buffer */ -static struct gs_buf *gs_buf_alloc(unsigned int size, gfp_t kmalloc_flags); -static void gs_buf_free(struct gs_buf *gb); -static void gs_buf_clear(struct gs_buf *gb); -static unsigned int gs_buf_data_avail(struct gs_buf *gb); -static unsigned int gs_buf_space_avail(struct gs_buf *gb); -static unsigned int gs_buf_put(struct gs_buf *gb, const char *buf, - unsigned int count); -static unsigned int gs_buf_get(struct gs_buf *gb, char *buf, - unsigned int count); - - -/* Globals */ - -static struct gs_dev *gs_device; - -static struct mutex gs_open_close_lock[GS_NUM_PORTS]; - - -/*-------------------------------------------------------------------------*/ - -/* USB descriptors */ - -#define GS_MANUFACTURER_STR_ID 1 -#define GS_PRODUCT_STR_ID 2 -#define GS_SERIAL_STR_ID 3 -#define GS_BULK_CONFIG_STR_ID 4 -#define GS_ACM_CONFIG_STR_ID 5 -#define GS_CONTROL_STR_ID 6 -#define GS_DATA_STR_ID 7 - -/* static strings, in UTF-8 */ -static char manufacturer[50]; -static struct usb_string gs_strings[] = { - { GS_MANUFACTURER_STR_ID, manufacturer }, - { GS_PRODUCT_STR_ID, GS_LONG_NAME }, - { GS_BULK_CONFIG_STR_ID, "Gadget Serial Bulk" }, - { GS_ACM_CONFIG_STR_ID, "Gadget Serial CDC ACM" }, - { GS_CONTROL_STR_ID, "Gadget Serial Control" }, - { GS_DATA_STR_ID, "Gadget Serial Data" }, - { } /* end of list */ -}; - -static struct usb_gadget_strings gs_string_table = { - .language = 0x0409, /* en-us */ - .strings = gs_strings, +static struct usb_gadget_strings *dev_strings[] = { + &stringtab_dev, + NULL, }; -static struct usb_device_descriptor gs_device_desc = { +static struct usb_device_descriptor device_desc = { .bLength = USB_DT_DEVICE_SIZE, .bDescriptorType = USB_DT_DEVICE, .bcdUSB = __constant_cpu_to_le16(0x0200), + /* .bDeviceClass = f(use_acm) */ .bDeviceSubClass = 0, .bDeviceProtocol = 0, + /* .bMaxPacketSize0 = f(hardware) */ .idVendor = __constant_cpu_to_le16(GS_VENDOR_ID), - .idProduct = __constant_cpu_to_le16(GS_PRODUCT_ID), - .iManufacturer = GS_MANUFACTURER_STR_ID, - .iProduct = GS_PRODUCT_STR_ID, - .bNumConfigurations = GS_NUM_CONFIGS, + /* .idProduct = f(use_acm) */ + /* .bcdDevice = f(hardware) */ + /* .iManufacturer = DYNAMIC */ + /* .iProduct = DYNAMIC */ + .bNumConfigurations = 1, }; -static struct usb_otg_descriptor gs_otg_descriptor = { - .bLength = sizeof(gs_otg_descriptor), +static struct usb_otg_descriptor otg_descriptor = { + .bLength = sizeof otg_descriptor, .bDescriptorType = USB_DT_OTG, - .bmAttributes = USB_OTG_SRP, -}; - -static struct usb_config_descriptor gs_bulk_config_desc = { - .bLength = USB_DT_CONFIG_SIZE, - .bDescriptorType = USB_DT_CONFIG, - /* .wTotalLength computed dynamically */ - .bNumInterfaces = 1, - .bConfigurationValue = GS_BULK_CONFIG_ID, - .iConfiguration = GS_BULK_CONFIG_STR_ID, - .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = 1, -}; - -static struct usb_config_descriptor gs_acm_config_desc = { - .bLength = USB_DT_CONFIG_SIZE, - .bDescriptorType = USB_DT_CONFIG, - /* .wTotalLength computed dynamically */ - .bNumInterfaces = 2, - .bConfigurationValue = GS_ACM_CONFIG_ID, - .iConfiguration = GS_ACM_CONFIG_STR_ID, - .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = 1, -}; - -static const struct usb_interface_descriptor gs_bulk_interface_desc = { - .bLength = USB_DT_INTERFACE_SIZE, - .bDescriptorType = USB_DT_INTERFACE, - .bInterfaceNumber = GS_BULK_INTERFACE_ID, - .bNumEndpoints = 2, - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - .bInterfaceSubClass = 0, - .bInterfaceProtocol = 0, - .iInterface = GS_DATA_STR_ID, -}; - -static const struct usb_interface_descriptor gs_control_interface_desc = { - .bLength = USB_DT_INTERFACE_SIZE, - .bDescriptorType = USB_DT_INTERFACE, - .bInterfaceNumber = GS_CONTROL_INTERFACE_ID, - .bNumEndpoints = 1, - .bInterfaceClass = USB_CLASS_COMM, - .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, - .bInterfaceProtocol = USB_CDC_ACM_PROTO_AT_V25TER, - .iInterface = GS_CONTROL_STR_ID, -}; - -static const struct usb_interface_descriptor gs_data_interface_desc = { - .bLength = USB_DT_INTERFACE_SIZE, - .bDescriptorType = USB_DT_INTERFACE, - .bInterfaceNumber = GS_DATA_INTERFACE_ID, - .bNumEndpoints = 2, - .bInterfaceClass = USB_CLASS_CDC_DATA, - .bInterfaceSubClass = 0, - .bInterfaceProtocol = 0, - .iInterface = GS_DATA_STR_ID, -}; - -static const struct usb_cdc_header_desc gs_header_desc = { - .bLength = sizeof(gs_header_desc), - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_HEADER_TYPE, - .bcdCDC = __constant_cpu_to_le16(0x0110), -}; - -static const struct usb_cdc_call_mgmt_descriptor gs_call_mgmt_descriptor = { - .bLength = sizeof(gs_call_mgmt_descriptor), - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_CALL_MANAGEMENT_TYPE, - .bmCapabilities = 0, - .bDataInterface = 1, /* index of data interface */ -}; - -static struct usb_cdc_acm_descriptor gs_acm_descriptor = { - .bLength = sizeof(gs_acm_descriptor), - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_ACM_TYPE, - .bmCapabilities = (1 << 1), -}; - -static const struct usb_cdc_union_desc gs_union_desc = { - .bLength = sizeof(gs_union_desc), - .bDescriptorType = USB_DT_CS_INTERFACE, - .bDescriptorSubType = USB_CDC_UNION_TYPE, - .bMasterInterface0 = 0, /* index of control interface */ - .bSlaveInterface0 = 1, /* index of data interface */ -}; - -static struct usb_endpoint_descriptor gs_fullspeed_notify_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_INT, - .wMaxPacketSize = __constant_cpu_to_le16(GS_NOTIFY_MAXPACKET), - .bInterval = 1 << GS_LOG2_NOTIFY_INTERVAL, -}; - -static struct usb_endpoint_descriptor gs_fullspeed_in_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_BULK, -}; - -static struct usb_endpoint_descriptor gs_fullspeed_out_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bEndpointAddress = USB_DIR_OUT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, -}; - -static const struct usb_descriptor_header *gs_bulk_fullspeed_function[] = { - (struct usb_descriptor_header *) &gs_otg_descriptor, - (struct usb_descriptor_header *) &gs_bulk_interface_desc, - (struct usb_descriptor_header *) &gs_fullspeed_in_desc, - (struct usb_descriptor_header *) &gs_fullspeed_out_desc, - NULL, -}; - -static const struct usb_descriptor_header *gs_acm_fullspeed_function[] = { - (struct usb_descriptor_header *) &gs_otg_descriptor, - (struct usb_descriptor_header *) &gs_control_interface_desc, - (struct usb_descriptor_header *) &gs_header_desc, - (struct usb_descriptor_header *) &gs_call_mgmt_descriptor, - (struct usb_descriptor_header *) &gs_acm_descriptor, - (struct usb_descriptor_header *) &gs_union_desc, - (struct usb_descriptor_header *) &gs_fullspeed_notify_desc, - (struct usb_descriptor_header *) &gs_data_interface_desc, - (struct usb_descriptor_header *) &gs_fullspeed_in_desc, - (struct usb_descriptor_header *) &gs_fullspeed_out_desc, - NULL, -}; -static struct usb_endpoint_descriptor gs_highspeed_notify_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_INT, - .wMaxPacketSize = __constant_cpu_to_le16(GS_NOTIFY_MAXPACKET), - .bInterval = GS_LOG2_NOTIFY_INTERVAL+4, -}; - -static struct usb_endpoint_descriptor gs_highspeed_in_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = __constant_cpu_to_le16(512), -}; - -static struct usb_endpoint_descriptor gs_highspeed_out_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = __constant_cpu_to_le16(512), -}; - -static struct usb_qualifier_descriptor gs_qualifier_desc = { - .bLength = sizeof(struct usb_qualifier_descriptor), - .bDescriptorType = USB_DT_DEVICE_QUALIFIER, - .bcdUSB = __constant_cpu_to_le16 (0x0200), - /* assumes ep0 uses the same value for both speeds ... */ - .bNumConfigurations = GS_NUM_CONFIGS, -}; - -static const struct usb_descriptor_header *gs_bulk_highspeed_function[] = { - (struct usb_descriptor_header *) &gs_otg_descriptor, - (struct usb_descriptor_header *) &gs_bulk_interface_desc, - (struct usb_descriptor_header *) &gs_highspeed_in_desc, - (struct usb_descriptor_header *) &gs_highspeed_out_desc, - NULL, + /* REVISIT SRP-only hardware is possible, although + * it would not be called "OTG" ... + */ + .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, }; -static const struct usb_descriptor_header *gs_acm_highspeed_function[] = { - (struct usb_descriptor_header *) &gs_otg_descriptor, - (struct usb_descriptor_header *) &gs_control_interface_desc, - (struct usb_descriptor_header *) &gs_header_desc, - (struct usb_descriptor_header *) &gs_call_mgmt_descriptor, - (struct usb_descriptor_header *) &gs_acm_descriptor, - (struct usb_descriptor_header *) &gs_union_desc, - (struct usb_descriptor_header *) &gs_highspeed_notify_desc, - (struct usb_descriptor_header *) &gs_data_interface_desc, - (struct usb_descriptor_header *) &gs_highspeed_in_desc, - (struct usb_descriptor_header *) &gs_highspeed_out_desc, +static const struct usb_descriptor_header *otg_desc[] = { + (struct usb_descriptor_header *) &otg_descriptor, NULL, }; - /*-------------------------------------------------------------------------*/ /* Module */ -MODULE_DESCRIPTION(GS_LONG_NAME); +MODULE_DESCRIPTION(GS_VERSION_NAME); MODULE_AUTHOR("Al Borchers"); +MODULE_AUTHOR("David Brownell"); MODULE_LICENSE("GPL"); -#ifdef DEBUG -module_param(debug, int, S_IRUGO|S_IWUSR); -MODULE_PARM_DESC(debug, "Enable debugging, 0=off, 1=on"); -#endif - -static unsigned int read_q_size = GS_DEFAULT_READ_Q_SIZE; -module_param(read_q_size, uint, S_IRUGO); -MODULE_PARM_DESC(read_q_size, "Read request queue size, default=32"); - -static unsigned int write_q_size = GS_DEFAULT_WRITE_Q_SIZE; -module_param(write_q_size, uint, S_IRUGO); -MODULE_PARM_DESC(write_q_size, "Write request queue size, default=32"); +static int use_acm = true; +module_param(use_acm, bool, 0); +MODULE_PARM_DESC(use_acm, "Use CDC ACM, default=yes"); -static unsigned int write_buf_size = GS_DEFAULT_WRITE_BUF_SIZE; -module_param(write_buf_size, uint, S_IRUGO); -MODULE_PARM_DESC(write_buf_size, "Write buffer size, default=8192"); - -static unsigned int use_acm = GS_DEFAULT_USE_ACM; -module_param(use_acm, uint, S_IRUGO); -MODULE_PARM_DESC(use_acm, "Use CDC ACM, 0=no, 1=yes, default=no"); +static unsigned n_ports = 1; +module_param(n_ports, uint, 0); +MODULE_PARM_DESC(n_ports, "number of ports to create, default=1"); /*-------------------------------------------------------------------------*/ -/* TTY Driver */ - -/* - * gs_open - */ -static int gs_open(struct tty_struct *tty, struct file *file) -{ - int port_num; - unsigned long flags; - struct gs_port *port; - struct gs_dev *dev; - struct gs_buf *buf; - struct mutex *mtx; - int ret; - - port_num = tty->index; - - gs_debug("gs_open: (%d,%p,%p)\n", port_num, tty, file); - - if (port_num < 0 || port_num >= GS_NUM_PORTS) { - pr_err("gs_open: (%d,%p,%p) invalid port number\n", - port_num, tty, file); - return -ENODEV; - } - - dev = gs_device; - - if (dev == NULL) { - pr_err("gs_open: (%d,%p,%p) NULL device pointer\n", - port_num, tty, file); - return -ENODEV; - } - - mtx = &gs_open_close_lock[port_num]; - if (mutex_lock_interruptible(mtx)) { - pr_err("gs_open: (%d,%p,%p) interrupted waiting for mutex\n", - port_num, tty, file); - return -ERESTARTSYS; - } - - spin_lock_irqsave(&dev->dev_lock, flags); - - if (dev->dev_config == GS_NO_CONFIG_ID) { - pr_err("gs_open: (%d,%p,%p) device is not connected\n", - port_num, tty, file); - ret = -ENODEV; - goto exit_unlock_dev; - } - - port = dev->dev_port[port_num]; - - if (port == NULL) { - pr_err("gs_open: (%d,%p,%p) NULL port pointer\n", - port_num, tty, file); - ret = -ENODEV; - goto exit_unlock_dev; - } - - spin_lock(&port->port_lock); - spin_unlock(&dev->dev_lock); - - if (port->port_dev == NULL) { - pr_err("gs_open: (%d,%p,%p) port disconnected (1)\n", - port_num, tty, file); - ret = -EIO; - goto exit_unlock_port; - } - - if (port->port_open_count > 0) { - ++port->port_open_count; - gs_debug("gs_open: (%d,%p,%p) already open\n", - port_num, tty, file); - ret = 0; - goto exit_unlock_port; - } - - tty->driver_data = NULL; - - /* mark port as in use, we can drop port lock and sleep if necessary */ - port->port_in_use = 1; - - /* allocate write buffer on first open */ - if (port->port_write_buf == NULL) { - spin_unlock_irqrestore(&port->port_lock, flags); - buf = gs_buf_alloc(write_buf_size, GFP_KERNEL); - spin_lock_irqsave(&port->port_lock, flags); - - /* might have been disconnected while asleep, check */ - if (port->port_dev == NULL) { - pr_err("gs_open: (%d,%p,%p) port disconnected (2)\n", - port_num, tty, file); - port->port_in_use = 0; - ret = -EIO; - goto exit_unlock_port; - } - - if ((port->port_write_buf=buf) == NULL) { - pr_err("gs_open: (%d,%p,%p) cannot allocate " - "port write buffer\n", - port_num, tty, file); - port->port_in_use = 0; - ret = -ENOMEM; - goto exit_unlock_port; - } - - } - - /* wait for carrier detect (not implemented) */ - - /* might have been disconnected while asleep, check */ - if (port->port_dev == NULL) { - pr_err("gs_open: (%d,%p,%p) port disconnected (3)\n", - port_num, tty, file); - port->port_in_use = 0; - ret = -EIO; - goto exit_unlock_port; - } - - tty->driver_data = port; - port->port_tty = tty; - port->port_open_count = 1; - port->port_in_use = 0; - - gs_debug("gs_open: (%d,%p,%p) completed\n", port_num, tty, file); - - ret = 0; - -exit_unlock_port: - spin_unlock_irqrestore(&port->port_lock, flags); - mutex_unlock(mtx); - return ret; - -exit_unlock_dev: - spin_unlock_irqrestore(&dev->dev_lock, flags); - mutex_unlock(mtx); - return ret; - -} - -/* - * gs_close - */ - -static int gs_write_finished_event_safely(struct gs_port *p) -{ - int cond; - - spin_lock_irq(&(p)->port_lock); - cond = !(p)->port_dev || !gs_buf_data_avail((p)->port_write_buf); - spin_unlock_irq(&(p)->port_lock); - return cond; -} - -static void gs_close(struct tty_struct *tty, struct file *file) -{ - struct gs_port *port = tty->driver_data; - struct mutex *mtx; - - if (port == NULL) { - pr_err("gs_close: NULL port pointer\n"); - return; - } - - gs_debug("gs_close: (%d,%p,%p)\n", port->port_num, tty, file); - - mtx = &gs_open_close_lock[port->port_num]; - mutex_lock(mtx); - - spin_lock_irq(&port->port_lock); - - if (port->port_open_count == 0) { - pr_err("gs_close: (%d,%p,%p) port is already closed\n", - port->port_num, tty, file); - goto exit; - } - - if (port->port_open_count > 1) { - --port->port_open_count; - goto exit; - } - - /* free disconnected port on final close */ - if (port->port_dev == NULL) { - kfree(port); - goto exit; - } - - /* mark port as closed but in use, we can drop port lock */ - /* and sleep if necessary */ - port->port_in_use = 1; - port->port_open_count = 0; - - /* wait for write buffer to drain, or */ - /* at most GS_CLOSE_TIMEOUT seconds */ - if (gs_buf_data_avail(port->port_write_buf) > 0) { - spin_unlock_irq(&port->port_lock); - wait_event_interruptible_timeout(port->port_write_wait, - gs_write_finished_event_safely(port), - GS_CLOSE_TIMEOUT * HZ); - spin_lock_irq(&port->port_lock); - } - - /* free disconnected port on final close */ - /* (might have happened during the above sleep) */ - if (port->port_dev == NULL) { - kfree(port); - goto exit; - } - - gs_buf_clear(port->port_write_buf); - - tty->driver_data = NULL; - port->port_tty = NULL; - port->port_in_use = 0; - - gs_debug("gs_close: (%d,%p,%p) completed\n", - port->port_num, tty, file); - -exit: - spin_unlock_irq(&port->port_lock); - mutex_unlock(mtx); -} - -/* - * gs_write - */ -static int gs_write(struct tty_struct *tty, const unsigned char *buf, int count) +static int __init serial_bind_config(struct usb_configuration *c) { - unsigned long flags; - struct gs_port *port = tty->driver_data; - int ret; - - if (port == NULL) { - pr_err("gs_write: NULL port pointer\n"); - return -EIO; - } - - gs_debug("gs_write: (%d,%p) writing %d bytes\n", port->port_num, tty, - count); - - if (count == 0) - return 0; - - spin_lock_irqsave(&port->port_lock, flags); - - if (port->port_dev == NULL) { - pr_err("gs_write: (%d,%p) port is not connected\n", - port->port_num, tty); - ret = -EIO; - goto exit; - } - - if (port->port_open_count == 0) { - pr_err("gs_write: (%d,%p) port is closed\n", - port->port_num, tty); - ret = -EBADF; - goto exit; - } - - count = gs_buf_put(port->port_write_buf, buf, count); - - spin_unlock_irqrestore(&port->port_lock, flags); - - gs_send(gs_device); - - gs_debug("gs_write: (%d,%p) wrote %d bytes\n", port->port_num, tty, - count); + unsigned i; + int status = 0; - return count; - -exit: - spin_unlock_irqrestore(&port->port_lock, flags); - return ret; -} - -/* - * gs_put_char - */ -static int gs_put_char(struct tty_struct *tty, unsigned char ch) -{ - unsigned long flags; - struct gs_port *port = tty->driver_data; - int ret = 0; - - if (port == NULL) { - pr_err("gs_put_char: NULL port pointer\n"); - return 0; - } - - gs_debug("gs_put_char: (%d,%p) char=0x%x, called from %p\n", - port->port_num, tty, ch, __builtin_return_address(0)); - - spin_lock_irqsave(&port->port_lock, flags); - - if (port->port_dev == NULL) { - pr_err("gs_put_char: (%d,%p) port is not connected\n", - port->port_num, tty); - goto exit; - } - - if (port->port_open_count == 0) { - pr_err("gs_put_char: (%d,%p) port is closed\n", - port->port_num, tty); - goto exit; - } - - ret = gs_buf_put(port->port_write_buf, &ch, 1); - -exit: - spin_unlock_irqrestore(&port->port_lock, flags); - return ret; -} - -/* - * gs_flush_chars - */ -static void gs_flush_chars(struct tty_struct *tty) -{ - unsigned long flags; - struct gs_port *port = tty->driver_data; - - if (port == NULL) { - pr_err("gs_flush_chars: NULL port pointer\n"); - return; - } - - gs_debug("gs_flush_chars: (%d,%p)\n", port->port_num, tty); - - spin_lock_irqsave(&port->port_lock, flags); - - if (port->port_dev == NULL) { - pr_err("gs_flush_chars: (%d,%p) port is not connected\n", - port->port_num, tty); - goto exit; - } - - if (port->port_open_count == 0) { - pr_err("gs_flush_chars: (%d,%p) port is closed\n", - port->port_num, tty); - goto exit; - } - - spin_unlock_irqrestore(&port->port_lock, flags); - - gs_send(gs_device); - - return; - -exit: - spin_unlock_irqrestore(&port->port_lock, flags); -} - -/* - * gs_write_room - */ -static int gs_write_room(struct tty_struct *tty) -{ - - int room = 0; - unsigned long flags; - struct gs_port *port = tty->driver_data; - - - if (port == NULL) - return 0; - - spin_lock_irqsave(&port->port_lock, flags); - - if (port->port_dev != NULL && port->port_open_count > 0 - && port->port_write_buf != NULL) - room = gs_buf_space_avail(port->port_write_buf); - - spin_unlock_irqrestore(&port->port_lock, flags); - - gs_debug("gs_write_room: (%d,%p) room=%d\n", - port->port_num, tty, room); - - return room; -} - -/* - * gs_chars_in_buffer - */ -static int gs_chars_in_buffer(struct tty_struct *tty) -{ - int chars = 0; - unsigned long flags; - struct gs_port *port = tty->driver_data; - - if (port == NULL) - return 0; - - spin_lock_irqsave(&port->port_lock, flags); - - if (port->port_dev != NULL && port->port_open_count > 0 - && port->port_write_buf != NULL) - chars = gs_buf_data_avail(port->port_write_buf); - - spin_unlock_irqrestore(&port->port_lock, flags); - - gs_debug("gs_chars_in_buffer: (%d,%p) chars=%d\n", - port->port_num, tty, chars); - - return chars; -} - -/* - * gs_throttle - */ -static void gs_throttle(struct tty_struct *tty) -{ -} - -/* - * gs_unthrottle - */ -static void gs_unthrottle(struct tty_struct *tty) -{ -} - -/* - * gs_break - */ -static void gs_break(struct tty_struct *tty, int break_state) -{ -} - -/* - * gs_ioctl - */ -static int gs_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) -{ - struct gs_port *port = tty->driver_data; - - if (port == NULL) { - pr_err("gs_ioctl: NULL port pointer\n"); - return -EIO; + for (i = 0; i < n_ports && status == 0; i++) { + if (use_acm) + status = acm_bind_config(c, i); + else + status = gser_bind_config(c, i); } - - gs_debug("gs_ioctl: (%d,%p,%p) cmd=0x%4.4x, arg=%lu\n", - port->port_num, tty, file, cmd, arg); - - /* handle ioctls */ - - /* could not handle ioctl */ - return -ENOIOCTLCMD; -} - -/* - * gs_set_termios - */ -static void gs_set_termios(struct tty_struct *tty, struct ktermios *old) -{ + return status; } -static const struct tty_operations gs_tty_ops = { - .open = gs_open, - .close = gs_close, - .write = gs_write, - .put_char = gs_put_char, - .flush_chars = gs_flush_chars, - .write_room = gs_write_room, - .ioctl = gs_ioctl, - .set_termios = gs_set_termios, - .throttle = gs_throttle, - .unthrottle = gs_unthrottle, - .break_ctl = gs_break, - .chars_in_buffer = gs_chars_in_buffer, +static struct usb_configuration serial_config_driver = { + /* .label = f(use_acm) */ + .bind = serial_bind_config, + /* .bConfigurationValue = f(use_acm) */ + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, + .bMaxPower = 1, /* 2 mA, minimal */ }; -/*-------------------------------------------------------------------------*/ - -/* -* gs_send -* -* This function finds available write requests, calls -* gs_send_packet to fill these packets with data, and -* continues until either there are no more write requests -* available or no more data to send. This function is -* run whenever data arrives or write requests are available. -*/ -static int gs_send(struct gs_dev *dev) -{ - int ret,len; - unsigned long flags; - struct usb_ep *ep; - struct usb_request *req; - - if (dev == NULL) { - pr_err("gs_send: NULL device pointer\n"); - return -ENODEV; - } - - spin_lock_irqsave(&dev->dev_lock, flags); - - ep = dev->dev_in_ep; - - while(!list_empty(&dev->dev_req_list)) { - - req = list_entry(dev->dev_req_list.next, - struct usb_request, list); - - len = gs_send_packet(dev, req->buf, ep->maxpacket); - - if (len > 0) { - gs_debug_level(3, "gs_send: len=%d, 0x%2.2x " - "0x%2.2x 0x%2.2x ...\n", len, - *((unsigned char *)req->buf), - *((unsigned char *)req->buf+1), - *((unsigned char *)req->buf+2)); - list_del(&req->list); - req->length = len; - spin_unlock_irqrestore(&dev->dev_lock, flags); - if ((ret=usb_ep_queue(ep, req, GFP_ATOMIC))) { - pr_err( - "gs_send: cannot queue read request, ret=%d\n", - ret); - spin_lock_irqsave(&dev->dev_lock, flags); - break; - } - spin_lock_irqsave(&dev->dev_lock, flags); - } else { - break; - } - - } - - spin_unlock_irqrestore(&dev->dev_lock, flags); - - return 0; -} - -/* - * gs_send_packet - * - * If there is data to send, a packet is built in the given - * buffer and the size is returned. If there is no data to - * send, 0 is returned. If there is any error a negative - * error number is returned. - * - * Called during USB completion routine, on interrupt time. - * - * We assume that disconnect will not happen until all completion - * routines have completed, so we can assume that the dev_port - * array does not change during the lifetime of this function. - */ -static int gs_send_packet(struct gs_dev *dev, char *packet, unsigned int size) -{ - unsigned int len; - struct gs_port *port; - - /* TEMPORARY -- only port 0 is supported right now */ - port = dev->dev_port[0]; - - if (port == NULL) { - pr_err("gs_send_packet: port=%d, NULL port pointer\n", 0); - return -EIO; - } - - spin_lock(&port->port_lock); - - len = gs_buf_data_avail(port->port_write_buf); - if (len < size) - size = len; - - if (size == 0) - goto exit; - - size = gs_buf_get(port->port_write_buf, packet, size); - - if (port->port_tty) - wake_up_interruptible(&port->port_tty->write_wait); - -exit: - spin_unlock(&port->port_lock); - return size; -} - -/* - * gs_recv_packet - * - * Called for each USB packet received. Reads the packet - * header and stuffs the data in the appropriate tty buffer. - * Returns 0 if successful, or a negative error number. - * - * Called during USB completion routine, on interrupt time. - * - * We assume that disconnect will not happen until all completion - * routines have completed, so we can assume that the dev_port - * array does not change during the lifetime of this function. - */ -static int gs_recv_packet(struct gs_dev *dev, char *packet, unsigned int size) -{ - unsigned int len; - struct gs_port *port; - int ret; - struct tty_struct *tty; - - /* TEMPORARY -- only port 0 is supported right now */ - port = dev->dev_port[0]; - - if (port == NULL) { - pr_err("gs_recv_packet: port=%d, NULL port pointer\n", - port->port_num); - return -EIO; - } - - spin_lock(&port->port_lock); - - if (port->port_open_count == 0) { - pr_err("gs_recv_packet: port=%d, port is closed\n", - port->port_num); - ret = -EIO; - goto exit; - } - - - tty = port->port_tty; - - if (tty == NULL) { - pr_err("gs_recv_packet: port=%d, NULL tty pointer\n", - port->port_num); - ret = -EIO; - goto exit; - } - - if (port->port_tty->magic != TTY_MAGIC) { - pr_err("gs_recv_packet: port=%d, bad tty magic\n", - port->port_num); - ret = -EIO; - goto exit; - } - - len = tty_buffer_request_room(tty, size); - if (len > 0) { - tty_insert_flip_string(tty, packet, len); - tty_flip_buffer_push(port->port_tty); - wake_up_interruptible(&port->port_tty->read_wait); - } - ret = 0; -exit: - spin_unlock(&port->port_lock); - return ret; -} - -/* -* gs_read_complete -*/ -static void gs_read_complete(struct usb_ep *ep, struct usb_request *req) +static int __init gs_bind(struct usb_composite_dev *cdev) { - int ret; - struct gs_dev *dev = ep->driver_data; - - if (dev == NULL) { - pr_err("gs_read_complete: NULL device pointer\n"); - return; - } + int gcnum; + struct usb_gadget *gadget = cdev->gadget; + int status; - switch(req->status) { - case 0: - /* normal completion */ - gs_recv_packet(dev, req->buf, req->actual); -requeue: - req->length = ep->maxpacket; - if ((ret=usb_ep_queue(ep, req, GFP_ATOMIC))) { - pr_err( - "gs_read_complete: cannot queue read request, ret=%d\n", - ret); - } - break; - - case -ESHUTDOWN: - /* disconnect */ - gs_debug("gs_read_complete: shutdown\n"); - gs_free_req(ep, req); - break; - - default: - /* unexpected */ - pr_err( - "gs_read_complete: unexpected status error, status=%d\n", - req->status); - goto requeue; - break; - } -} - -/* -* gs_write_complete -*/ -static void gs_write_complete(struct usb_ep *ep, struct usb_request *req) -{ - struct gs_dev *dev = ep->driver_data; - - if (dev == NULL) { - pr_err("gs_write_complete: NULL device pointer\n"); - return; - } + status = gserial_setup(cdev->gadget, n_ports); + if (status < 0) + return status; - switch(req->status) { - case 0: - /* normal completion */ -requeue: - spin_lock(&dev->dev_lock); - list_add(&req->list, &dev->dev_req_list); - spin_unlock(&dev->dev_lock); - - gs_send(dev); - - break; - - case -ESHUTDOWN: - /* disconnect */ - gs_debug("gs_write_complete: shutdown\n"); - gs_free_req(ep, req); - break; - - default: - pr_err( - "gs_write_complete: unexpected status error, status=%d\n", - req->status); - goto requeue; - break; - } -} + /* Allocate string descriptor numbers ... note that string + * contents can be overridden by the composite_dev glue. + */ -/*-------------------------------------------------------------------------*/ + /* device description: manufacturer, product */ + snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", + init_utsname()->sysname, init_utsname()->release, + gadget->name); + status = usb_string_id(cdev); + if (status < 0) + goto fail; + strings_dev[STRING_MANUFACTURER_IDX].id = status; -/* Gadget Driver */ + device_desc.iManufacturer = status; -/* - * gs_unbind - * - * Called on module unload. Frees the control request and device - * structure. - */ -static void /* __init_or_exit */ gs_unbind(struct usb_gadget *gadget) -{ - struct gs_dev *dev = get_gadget_data(gadget); + status = usb_string_id(cdev); + if (status < 0) + goto fail; + strings_dev[STRING_PRODUCT_IDX].id = status; - gs_device = NULL; + device_desc.iProduct = status; - /* read/write requests already freed, only control request remains */ - if (dev != NULL) { - if (dev->dev_ctrl_req != NULL) { - gs_free_req(gadget->ep0, dev->dev_ctrl_req); - dev->dev_ctrl_req = NULL; - } - gs_reset_config(dev); - gs_free_ports(dev); - kfree(dev); - set_gadget_data(gadget, NULL); - } + /* config description */ + status = usb_string_id(cdev); + if (status < 0) + goto fail; + strings_dev[STRING_DESCRIPTION_IDX].id = status; - pr_info("gs_unbind: %s %s unbound\n", GS_LONG_NAME, - GS_VERSION_STR); -} - -/* - * gs_bind - * - * Called on module load. Allocates and initializes the device - * structure and a control request. - */ -static int __init gs_bind(struct usb_gadget *gadget) -{ - int ret; - struct usb_ep *ep; - struct gs_dev *dev; - int gcnum; - - /* Some controllers can't support CDC ACM: - * - sh doesn't support multiple interfaces or configs; - * - sa1100 doesn't have a third interrupt endpoint - */ - if (gadget_is_sh(gadget) || gadget_is_sa1100(gadget)) - use_acm = 0; + serial_config_driver.iConfiguration = status; + /* set up other descriptors */ gcnum = usb_gadget_controller_number(gadget); if (gcnum >= 0) - gs_device_desc.bcdDevice = - cpu_to_le16(GS_VERSION_NUM | gcnum); + device_desc.bcdDevice = cpu_to_le16(GS_VERSION_NUM | gcnum); else { + /* this is so simple (for now, no altsettings) that it + * SHOULD NOT have problems with bulk-capable hardware. + * so warn about unrcognized controllers -- don't panic. + * + * things like configuration and altsetting numbering + * can need hardware-specific attention though. + */ pr_warning("gs_bind: controller '%s' not recognized\n", gadget->name); - /* unrecognized, but safe unless bulk is REALLY quirky */ - gs_device_desc.bcdDevice = - __constant_cpu_to_le16(GS_VERSION_NUM|0x0099); - } - - dev = kzalloc(sizeof(struct gs_dev), GFP_KERNEL); - if (dev == NULL) - return -ENOMEM; - - usb_ep_autoconfig_reset(gadget); - - ep = usb_ep_autoconfig(gadget, &gs_fullspeed_in_desc); - if (!ep) - goto autoconf_fail; - dev->dev_in_ep = ep; - ep->driver_data = dev; /* claim the endpoint */ - - ep = usb_ep_autoconfig(gadget, &gs_fullspeed_out_desc); - if (!ep) - goto autoconf_fail; - dev->dev_out_ep = ep; - ep->driver_data = dev; /* claim the endpoint */ - - if (use_acm) { - ep = usb_ep_autoconfig(gadget, &gs_fullspeed_notify_desc); - if (!ep) { - pr_err("gs_bind: cannot run ACM on %s\n", gadget->name); - goto autoconf_fail; - } - gs_device_desc.idProduct = __constant_cpu_to_le16( - GS_CDC_PRODUCT_ID), - dev->dev_notify_ep = ep; - ep->driver_data = dev; /* claim the endpoint */ - } - - gs_device_desc.bDeviceClass = use_acm - ? USB_CLASS_COMM : USB_CLASS_VENDOR_SPEC; - gs_device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; - - if (gadget_is_dualspeed(gadget)) { - gs_qualifier_desc.bDeviceClass = use_acm - ? USB_CLASS_COMM : USB_CLASS_VENDOR_SPEC; - /* assume ep0 uses the same packet size for both speeds */ - gs_qualifier_desc.bMaxPacketSize0 = - gs_device_desc.bMaxPacketSize0; - /* assume endpoints are dual-speed */ - gs_highspeed_notify_desc.bEndpointAddress = - gs_fullspeed_notify_desc.bEndpointAddress; - gs_highspeed_in_desc.bEndpointAddress = - gs_fullspeed_in_desc.bEndpointAddress; - gs_highspeed_out_desc.bEndpointAddress = - gs_fullspeed_out_desc.bEndpointAddress; - } - - usb_gadget_set_selfpowered(gadget); - - if (gadget_is_otg(gadget)) { - gs_otg_descriptor.bmAttributes |= USB_OTG_HNP, - gs_bulk_config_desc.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - gs_acm_config_desc.bmAttributes |= USB_CONFIG_ATT_WAKEUP; + device_desc.bcdDevice = + __constant_cpu_to_le16(GS_VERSION_NUM | 0x0099); } - gs_device = dev; - - snprintf(manufacturer, sizeof(manufacturer), "%s %s with %s", - init_utsname()->sysname, init_utsname()->release, - gadget->name); - - dev->dev_gadget = gadget; - spin_lock_init(&dev->dev_lock); - INIT_LIST_HEAD(&dev->dev_req_list); - set_gadget_data(gadget, dev); - - if ((ret=gs_alloc_ports(dev, GFP_KERNEL)) != 0) { - pr_err("gs_bind: cannot allocate ports\n"); - gs_unbind(gadget); - return ret; + if (gadget_is_otg(cdev->gadget)) { + serial_config_driver.descriptors = otg_desc; + serial_config_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; } - /* preallocate control response and buffer */ - dev->dev_ctrl_req = gs_alloc_req(gadget->ep0, GS_MAX_DESC_LEN, - GFP_KERNEL); - if (dev->dev_ctrl_req == NULL) { - gs_unbind(gadget); - return -ENOMEM; - } - gadget->ep0->driver_data = dev; + /* register our configuration */ + status = usb_add_config(cdev, &serial_config_driver); + if (status < 0) + goto fail; - pr_info("gs_bind: %s %s bound\n", - GS_LONG_NAME, GS_VERSION_STR); + INFO(cdev, "%s\n", GS_VERSION_NAME); return 0; -autoconf_fail: - kfree(dev); - pr_err("gs_bind: cannot autoconfigure on %s\n", gadget->name); - return -ENODEV; -} - -static int gs_setup_standard(struct usb_gadget *gadget, - const struct usb_ctrlrequest *ctrl) -{ - int ret = -EOPNOTSUPP; - struct gs_dev *dev = get_gadget_data(gadget); - struct usb_request *req = dev->dev_ctrl_req; - u16 wIndex = le16_to_cpu(ctrl->wIndex); - u16 wValue = le16_to_cpu(ctrl->wValue); - u16 wLength = le16_to_cpu(ctrl->wLength); - - switch (ctrl->bRequest) { - case USB_REQ_GET_DESCRIPTOR: - if (ctrl->bRequestType != USB_DIR_IN) - break; - - switch (wValue >> 8) { - case USB_DT_DEVICE: - ret = min(wLength, - (u16)sizeof(struct usb_device_descriptor)); - memcpy(req->buf, &gs_device_desc, ret); - break; - - case USB_DT_DEVICE_QUALIFIER: - if (!gadget_is_dualspeed(gadget)) - break; - ret = min(wLength, - (u16)sizeof(struct usb_qualifier_descriptor)); - memcpy(req->buf, &gs_qualifier_desc, ret); - break; - - case USB_DT_OTHER_SPEED_CONFIG: - if (!gadget_is_dualspeed(gadget)) - break; - /* fall through */ - case USB_DT_CONFIG: - ret = gs_build_config_buf(req->buf, gadget, - wValue >> 8, wValue & 0xff, - gadget_is_otg(gadget)); - if (ret >= 0) - ret = min(wLength, (u16)ret); - break; - - case USB_DT_STRING: - /* wIndex == language code. */ - ret = usb_gadget_get_string(&gs_string_table, - wValue & 0xff, req->buf); - if (ret >= 0) - ret = min(wLength, (u16)ret); - break; - } - break; - - case USB_REQ_SET_CONFIGURATION: - if (ctrl->bRequestType != 0) - break; - spin_lock(&dev->dev_lock); - ret = gs_set_config(dev, wValue); - spin_unlock(&dev->dev_lock); - break; - - case USB_REQ_GET_CONFIGURATION: - if (ctrl->bRequestType != USB_DIR_IN) - break; - *(u8 *)req->buf = dev->dev_config; - ret = min(wLength, (u16)1); - break; - - case USB_REQ_SET_INTERFACE: - if (ctrl->bRequestType != USB_RECIP_INTERFACE - || !dev->dev_config - || wIndex >= GS_MAX_NUM_INTERFACES) - break; - if (dev->dev_config == GS_BULK_CONFIG_ID - && wIndex != GS_BULK_INTERFACE_ID) - break; - /* no alternate interface settings */ - if (wValue != 0) - break; - spin_lock(&dev->dev_lock); - /* PXA hardware partially handles SET_INTERFACE; - * we need to kluge around that interference. */ - if (gadget_is_pxa(gadget)) { - ret = gs_set_config(dev, use_acm ? - GS_ACM_CONFIG_ID : GS_BULK_CONFIG_ID); - goto set_interface_done; - } - if (dev->dev_config != GS_BULK_CONFIG_ID - && wIndex == GS_CONTROL_INTERFACE_ID) { - if (dev->dev_notify_ep) { - usb_ep_disable(dev->dev_notify_ep); - usb_ep_enable(dev->dev_notify_ep, dev->dev_notify_ep_desc); - } - } else { - usb_ep_disable(dev->dev_in_ep); - usb_ep_disable(dev->dev_out_ep); - usb_ep_enable(dev->dev_in_ep, dev->dev_in_ep_desc); - usb_ep_enable(dev->dev_out_ep, dev->dev_out_ep_desc); - } - ret = 0; -set_interface_done: - spin_unlock(&dev->dev_lock); - break; - - case USB_REQ_GET_INTERFACE: - if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE) - || dev->dev_config == GS_NO_CONFIG_ID) - break; - if (wIndex >= GS_MAX_NUM_INTERFACES - || (dev->dev_config == GS_BULK_CONFIG_ID - && wIndex != GS_BULK_INTERFACE_ID)) { - ret = -EDOM; - break; - } - /* no alternate interface settings */ - *(u8 *)req->buf = 0; - ret = min(wLength, (u16)1); - break; - - default: - pr_err("gs_setup: unknown standard request, type=%02x, " - "request=%02x, value=%04x, index=%04x, length=%d\n", - ctrl->bRequestType, ctrl->bRequest, - wValue, wIndex, wLength); - break; - } - - return ret; +fail: + gserial_cleanup(); + return status; } -static void gs_setup_complete_set_line_coding(struct usb_ep *ep, - struct usb_request *req) -{ - struct gs_dev *dev = ep->driver_data; - struct gs_port *port = dev->dev_port[0]; /* ACM only has one port */ - - switch (req->status) { - case 0: - /* normal completion */ - if (req->actual != sizeof(port->port_line_coding)) - usb_ep_set_halt(ep); - else if (port) { - struct usb_cdc_line_coding *value = req->buf; - - /* REVISIT: we currently just remember this data. - * If we change that, (a) validate it first, then - * (b) update whatever hardware needs updating. - */ - spin_lock(&port->port_lock); - port->port_line_coding = *value; - spin_unlock(&port->port_lock); - } - break; - - case -ESHUTDOWN: - /* disconnect */ - gs_free_req(ep, req); - break; - - default: - /* unexpected */ - break; - } - return; -} - -static int gs_setup_class(struct usb_gadget *gadget, - const struct usb_ctrlrequest *ctrl) -{ - int ret = -EOPNOTSUPP; - struct gs_dev *dev = get_gadget_data(gadget); - struct gs_port *port = dev->dev_port[0]; /* ACM only has one port */ - struct usb_request *req = dev->dev_ctrl_req; - u16 wIndex = le16_to_cpu(ctrl->wIndex); - u16 wValue = le16_to_cpu(ctrl->wValue); - u16 wLength = le16_to_cpu(ctrl->wLength); - - switch (ctrl->bRequest) { - case USB_CDC_REQ_SET_LINE_CODING: - if (wLength != sizeof(struct usb_cdc_line_coding)) - break; - ret = wLength; - req->complete = gs_setup_complete_set_line_coding; - break; - - case USB_CDC_REQ_GET_LINE_CODING: - ret = min_t(int, wLength, sizeof(struct usb_cdc_line_coding)); - if (port) { - spin_lock(&port->port_lock); - memcpy(req->buf, &port->port_line_coding, ret); - spin_unlock(&port->port_lock); - } - break; - - case USB_CDC_REQ_SET_CONTROL_LINE_STATE: - if (wLength != 0) - break; - ret = 0; - if (port) { - /* REVISIT: we currently just remember this data. - * If we change that, update whatever hardware needs - * updating. - */ - spin_lock(&port->port_lock); - port->port_handshake_bits = wValue; - spin_unlock(&port->port_lock); - } - break; - - default: - /* NOTE: strictly speaking, we should accept AT-commands - * using SEND_ENCPSULATED_COMMAND/GET_ENCAPSULATED_RESPONSE. - * But our call management descriptor says we don't handle - * call management, so we should be able to get by without - * handling those "required" commands (except by stalling). - */ - pr_err("gs_setup: unknown class request, " - "type=%02x, request=%02x, value=%04x, " - "index=%04x, length=%d\n", - ctrl->bRequestType, ctrl->bRequest, - wValue, wIndex, wLength); - break; - } - - return ret; -} - -/* - * gs_setup_complete - */ -static void gs_setup_complete(struct usb_ep *ep, struct usb_request *req) -{ - if (req->status || req->actual != req->length) { - pr_err("gs_setup_complete: status error, status=%d, " - "actual=%d, length=%d\n", - req->status, req->actual, req->length); - } -} - -/* - * gs_setup - * - * Implements all the control endpoint functionality that's not - * handled in hardware or the hardware driver. - * - * Returns the size of the data sent to the host, or a negative - * error number. - */ -static int gs_setup(struct usb_gadget *gadget, - const struct usb_ctrlrequest *ctrl) -{ - int ret = -EOPNOTSUPP; - struct gs_dev *dev = get_gadget_data(gadget); - struct usb_request *req = dev->dev_ctrl_req; - u16 wIndex = le16_to_cpu(ctrl->wIndex); - u16 wValue = le16_to_cpu(ctrl->wValue); - u16 wLength = le16_to_cpu(ctrl->wLength); - - req->complete = gs_setup_complete; - - switch (ctrl->bRequestType & USB_TYPE_MASK) { - case USB_TYPE_STANDARD: - ret = gs_setup_standard(gadget, ctrl); - break; - - case USB_TYPE_CLASS: - ret = gs_setup_class(gadget, ctrl); - break; - - default: - pr_err("gs_setup: unknown request, type=%02x, request=%02x, " - "value=%04x, index=%04x, length=%d\n", - ctrl->bRequestType, ctrl->bRequest, - wValue, wIndex, wLength); - break; - } - - /* respond with data transfer before status phase? */ - if (ret >= 0) { - req->length = ret; - req->zero = ret < wLength - && (ret % gadget->ep0->maxpacket) == 0; - ret = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC); - if (ret < 0) { - pr_err("gs_setup: cannot queue response, ret=%d\n", - ret); - req->status = 0; - gs_setup_complete(gadget->ep0, req); - } - } - - /* device either stalls (ret < 0) or reports success */ - return ret; -} - -/* - * gs_disconnect - * - * Called when the device is disconnected. Frees the closed - * ports and disconnects open ports. Open ports will be freed - * on close. Then reallocates the ports for the next connection. - */ -static void gs_disconnect(struct usb_gadget *gadget) -{ - unsigned long flags; - struct gs_dev *dev = get_gadget_data(gadget); - - spin_lock_irqsave(&dev->dev_lock, flags); - - gs_reset_config(dev); - - /* free closed ports and disconnect open ports */ - /* (open ports will be freed when closed) */ - gs_free_ports(dev); - - /* re-allocate ports for the next connection */ - if (gs_alloc_ports(dev, GFP_ATOMIC) != 0) - pr_err("gs_disconnect: cannot re-allocate ports\n"); - - spin_unlock_irqrestore(&dev->dev_lock, flags); - - pr_info("gs_disconnect: %s disconnected\n", GS_LONG_NAME); -} - -static struct usb_gadget_driver gs_gadget_driver = { -#ifdef CONFIG_USB_GADGET_DUALSPEED - .speed = USB_SPEED_HIGH, -#else - .speed = USB_SPEED_FULL, -#endif /* CONFIG_USB_GADGET_DUALSPEED */ - .function = GS_LONG_NAME, - .bind = gs_bind, - .unbind = gs_unbind, - .setup = gs_setup, - .disconnect = gs_disconnect, - .driver = { - .name = GS_SHORT_NAME, - .owner = THIS_MODULE, - }, +static struct usb_composite_driver gserial_driver = { + .name = "g_serial", + .dev = &device_desc, + .strings = dev_strings, + .bind = gs_bind, }; -/* - * gs_set_config - * - * Configures the device by enabling device specific - * optimizations, setting up the endpoints, allocating - * read and write requests and queuing read requests. - * - * The device lock must be held when calling this function. - */ -static int gs_set_config(struct gs_dev *dev, unsigned config) +static int __init init(void) { - int i; - int ret = 0; - struct usb_gadget *gadget = dev->dev_gadget; - struct usb_ep *ep; - struct usb_endpoint_descriptor *out, *in, *notify; - struct usb_request *req; - - if (dev == NULL) { - pr_err("gs_set_config: NULL device pointer\n"); - return 0; - } - - if (config == dev->dev_config) - return 0; - - gs_reset_config(dev); - - switch (config) { - case GS_NO_CONFIG_ID: - return 0; - case GS_BULK_CONFIG_ID: - if (use_acm) - return -EINVAL; - break; - case GS_ACM_CONFIG_ID: - if (!use_acm) - return -EINVAL; - break; - default: - return -EINVAL; - } - - in = choose_ep_desc(gadget, - &gs_highspeed_in_desc, - &gs_fullspeed_in_desc); - out = choose_ep_desc(gadget, - &gs_highspeed_out_desc, - &gs_fullspeed_out_desc); - notify = dev->dev_notify_ep - ? choose_ep_desc(gadget, - &gs_highspeed_notify_desc, - &gs_fullspeed_notify_desc) - : NULL; - - ret = usb_ep_enable(dev->dev_in_ep, in); - if (ret == 0) { - dev->dev_in_ep_desc = in; - } else { - pr_debug("%s: cannot enable %s %s, ret=%d\n", - __func__, "IN", dev->dev_in_ep->name, ret); - return ret; - } - - ret = usb_ep_enable(dev->dev_out_ep, out); - if (ret == 0) { - dev->dev_out_ep_desc = out; - } else { - pr_debug("%s: cannot enable %s %s, ret=%d\n", - __func__, "OUT", dev->dev_out_ep->name, ret); -fail0: - usb_ep_disable(dev->dev_in_ep); - return ret; - } - - if (notify) { - ret = usb_ep_enable(dev->dev_notify_ep, notify); - if (ret == 0) { - dev->dev_notify_ep_desc = notify; - } else { - pr_debug("%s: cannot enable %s %s, ret=%d\n", - __func__, "NOTIFY", - dev->dev_notify_ep->name, ret); - usb_ep_disable(dev->dev_out_ep); - goto fail0; - } - } - - dev->dev_config = config; - - /* allocate and queue read requests */ - ep = dev->dev_out_ep; - for (i=0; i<read_q_size && ret == 0; i++) { - if ((req=gs_alloc_req(ep, ep->maxpacket, GFP_ATOMIC))) { - req->complete = gs_read_complete; - if ((ret=usb_ep_queue(ep, req, GFP_ATOMIC))) { - pr_err("gs_set_config: cannot queue read " - "request, ret=%d\n", ret); - } - } else { - pr_err("gs_set_config: cannot allocate " - "read requests\n"); - ret = -ENOMEM; - goto exit_reset_config; - } - } - - /* allocate write requests, and put on free list */ - ep = dev->dev_in_ep; - for (i=0; i<write_q_size; i++) { - req = gs_alloc_req(ep, ep->maxpacket, GFP_ATOMIC); - if (req) { - req->complete = gs_write_complete; - list_add(&req->list, &dev->dev_req_list); - } else { - pr_err("gs_set_config: cannot allocate " - "write requests\n"); - ret = -ENOMEM; - goto exit_reset_config; - } - } - - /* REVISIT the ACM mode should be able to actually *issue* some - * notifications, for at least serial state change events if - * not also for network connection; say so in bmCapabilities. + /* We *could* export two configs; that'd be much cleaner... + * but neither of these product IDs was defined that way. */ - - pr_info("gs_set_config: %s configured, %s speed %s config\n", - GS_LONG_NAME, - gadget->speed == USB_SPEED_HIGH ? "high" : "full", - config == GS_BULK_CONFIG_ID ? "BULK" : "CDC-ACM"); - - return 0; - -exit_reset_config: - gs_reset_config(dev); - return ret; -} - -/* - * gs_reset_config - * - * Mark the device as not configured, disable all endpoints, - * which forces completion of pending I/O and frees queued - * requests, and free the remaining write requests on the - * free list. - * - * The device lock must be held when calling this function. - */ -static void gs_reset_config(struct gs_dev *dev) -{ - struct usb_request *req; - - if (dev == NULL) { - pr_err("gs_reset_config: NULL device pointer\n"); - return; - } - - if (dev->dev_config == GS_NO_CONFIG_ID) - return; - - dev->dev_config = GS_NO_CONFIG_ID; - - /* free write requests on the free list */ - while(!list_empty(&dev->dev_req_list)) { - req = list_entry(dev->dev_req_list.next, - struct usb_request, list); - list_del(&req->list); - gs_free_req(dev->dev_in_ep, req); - } - - /* disable endpoints, forcing completion of pending i/o; */ - /* completion handlers free their requests in this case */ - if (dev->dev_notify_ep) - usb_ep_disable(dev->dev_notify_ep); - usb_ep_disable(dev->dev_in_ep); - usb_ep_disable(dev->dev_out_ep); -} - -/* - * gs_build_config_buf - * - * Builds the config descriptors in the given buffer and returns the - * length, or a negative error number. - */ -static int gs_build_config_buf(u8 *buf, struct usb_gadget *g, - u8 type, unsigned int index, int is_otg) -{ - int len; - int high_speed = 0; - const struct usb_config_descriptor *config_desc; - const struct usb_descriptor_header **function; - - if (index >= gs_device_desc.bNumConfigurations) - return -EINVAL; - - /* other speed switches high and full speed */ - if (gadget_is_dualspeed(g)) { - high_speed = (g->speed == USB_SPEED_HIGH); - if (type == USB_DT_OTHER_SPEED_CONFIG) - high_speed = !high_speed; - } - if (use_acm) { - config_desc = &gs_acm_config_desc; - function = high_speed - ? gs_acm_highspeed_function - : gs_acm_fullspeed_function; + serial_config_driver.label = "CDC ACM config"; + serial_config_driver.bConfigurationValue = 2; + device_desc.bDeviceClass = USB_CLASS_COMM; + device_desc.idProduct = + __constant_cpu_to_le16(GS_CDC_PRODUCT_ID); } else { - config_desc = &gs_bulk_config_desc; - function = high_speed - ? gs_bulk_highspeed_function - : gs_bulk_fullspeed_function; - } - - /* for now, don't advertise srp-only devices */ - if (!is_otg) - function++; - - len = usb_gadget_config_buf(config_desc, buf, GS_MAX_DESC_LEN, function); - if (len < 0) - return len; - - ((struct usb_config_descriptor *)buf)->bDescriptorType = type; - - return len; -} - -/* - * gs_alloc_req - * - * Allocate a usb_request and its buffer. Returns a pointer to the - * usb_request or NULL if there is an error. - */ -static struct usb_request * -gs_alloc_req(struct usb_ep *ep, unsigned int len, gfp_t kmalloc_flags) -{ - struct usb_request *req; - - if (ep == NULL) - return NULL; - - req = usb_ep_alloc_request(ep, kmalloc_flags); - - if (req != NULL) { - req->length = len; - req->buf = kmalloc(len, kmalloc_flags); - if (req->buf == NULL) { - usb_ep_free_request(ep, req); - return NULL; - } + serial_config_driver.label = "Generic Serial config"; + serial_config_driver.bConfigurationValue = 1; + device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC; + device_desc.idProduct = + __constant_cpu_to_le16(GS_PRODUCT_ID); } + strings_dev[STRING_DESCRIPTION_IDX].s = serial_config_driver.label; - return req; + return usb_composite_register(&gserial_driver); } +module_init(init); -/* - * gs_free_req - * - * Free a usb_request and its buffer. - */ -static void gs_free_req(struct usb_ep *ep, struct usb_request *req) +static void __exit cleanup(void) { - if (ep != NULL && req != NULL) { - kfree(req->buf); - usb_ep_free_request(ep, req); - } -} - -/* - * gs_alloc_ports - * - * Allocate all ports and set the gs_dev struct to point to them. - * Return 0 if successful, or a negative error number. - * - * The device lock is normally held when calling this function. - */ -static int gs_alloc_ports(struct gs_dev *dev, gfp_t kmalloc_flags) -{ - int i; - struct gs_port *port; - - if (dev == NULL) - return -EIO; - - for (i=0; i<GS_NUM_PORTS; i++) { - if ((port=kzalloc(sizeof(struct gs_port), kmalloc_flags)) == NULL) - return -ENOMEM; - - port->port_dev = dev; - port->port_num = i; - port->port_line_coding.dwDTERate = cpu_to_le32(GS_DEFAULT_DTE_RATE); - port->port_line_coding.bCharFormat = GS_DEFAULT_CHAR_FORMAT; - port->port_line_coding.bParityType = GS_DEFAULT_PARITY; - port->port_line_coding.bDataBits = GS_DEFAULT_DATA_BITS; - spin_lock_init(&port->port_lock); - init_waitqueue_head(&port->port_write_wait); - - dev->dev_port[i] = port; - } - - return 0; -} - -/* - * gs_free_ports - * - * Free all closed ports. Open ports are disconnected by - * freeing their write buffers, setting their device pointers - * and the pointers to them in the device to NULL. These - * ports will be freed when closed. - * - * The device lock is normally held when calling this function. - */ -static void gs_free_ports(struct gs_dev *dev) -{ - int i; - unsigned long flags; - struct gs_port *port; - - if (dev == NULL) - return; - - for (i=0; i<GS_NUM_PORTS; i++) { - if ((port=dev->dev_port[i]) != NULL) { - dev->dev_port[i] = NULL; - - spin_lock_irqsave(&port->port_lock, flags); - - if (port->port_write_buf != NULL) { - gs_buf_free(port->port_write_buf); - port->port_write_buf = NULL; - } - - if (port->port_open_count > 0 || port->port_in_use) { - port->port_dev = NULL; - wake_up_interruptible(&port->port_write_wait); - if (port->port_tty) { - tty_hangup(port->port_tty); - } - spin_unlock_irqrestore(&port->port_lock, flags); - } else { - spin_unlock_irqrestore(&port->port_lock, flags); - kfree(port); - } - - } - } -} - -/*-------------------------------------------------------------------------*/ - -/* Circular Buffer */ - -/* - * gs_buf_alloc - * - * Allocate a circular buffer and all associated memory. - */ -static struct gs_buf *gs_buf_alloc(unsigned int size, gfp_t kmalloc_flags) -{ - struct gs_buf *gb; - - if (size == 0) - return NULL; - - gb = kmalloc(sizeof(struct gs_buf), kmalloc_flags); - if (gb == NULL) - return NULL; - - gb->buf_buf = kmalloc(size, kmalloc_flags); - if (gb->buf_buf == NULL) { - kfree(gb); - return NULL; - } - - gb->buf_size = size; - gb->buf_get = gb->buf_put = gb->buf_buf; - - return gb; -} - -/* - * gs_buf_free - * - * Free the buffer and all associated memory. - */ -static void gs_buf_free(struct gs_buf *gb) -{ - if (gb) { - kfree(gb->buf_buf); - kfree(gb); - } -} - -/* - * gs_buf_clear - * - * Clear out all data in the circular buffer. - */ -static void gs_buf_clear(struct gs_buf *gb) -{ - if (gb != NULL) - gb->buf_get = gb->buf_put; - /* equivalent to a get of all data available */ -} - -/* - * gs_buf_data_avail - * - * Return the number of bytes of data available in the circular - * buffer. - */ -static unsigned int gs_buf_data_avail(struct gs_buf *gb) -{ - if (gb != NULL) - return (gb->buf_size + gb->buf_put - gb->buf_get) % gb->buf_size; - else - return 0; -} - -/* - * gs_buf_space_avail - * - * Return the number of bytes of space available in the circular - * buffer. - */ -static unsigned int gs_buf_space_avail(struct gs_buf *gb) -{ - if (gb != NULL) - return (gb->buf_size + gb->buf_get - gb->buf_put - 1) % gb->buf_size; - else - return 0; -} - -/* - * gs_buf_put - * - * Copy data data from a user buffer and put it into the circular buffer. - * Restrict to the amount of space available. - * - * Return the number of bytes copied. - */ -static unsigned int -gs_buf_put(struct gs_buf *gb, const char *buf, unsigned int count) -{ - unsigned int len; - - if (gb == NULL) - return 0; - - len = gs_buf_space_avail(gb); - if (count > len) - count = len; - - if (count == 0) - return 0; - - len = gb->buf_buf + gb->buf_size - gb->buf_put; - if (count > len) { - memcpy(gb->buf_put, buf, len); - memcpy(gb->buf_buf, buf+len, count - len); - gb->buf_put = gb->buf_buf + count - len; - } else { - memcpy(gb->buf_put, buf, count); - if (count < len) - gb->buf_put += count; - else /* count == len */ - gb->buf_put = gb->buf_buf; - } - - return count; -} - -/* - * gs_buf_get - * - * Get data from the circular buffer and copy to the given buffer. - * Restrict to the amount of data available. - * - * Return the number of bytes copied. - */ -static unsigned int -gs_buf_get(struct gs_buf *gb, char *buf, unsigned int count) -{ - unsigned int len; - - if (gb == NULL) - return 0; - - len = gs_buf_data_avail(gb); - if (count > len) - count = len; - - if (count == 0) - return 0; - - len = gb->buf_buf + gb->buf_size - gb->buf_get; - if (count > len) { - memcpy(buf, gb->buf_get, len); - memcpy(buf+len, gb->buf_buf, count - len); - gb->buf_get = gb->buf_buf + count - len; - } else { - memcpy(buf, gb->buf_get, count); - if (count < len) - gb->buf_get += count; - else /* count == len */ - gb->buf_get = gb->buf_buf; - } - - return count; -} - -/*-------------------------------------------------------------------------*/ - -static struct tty_driver *gs_tty_driver; - -/* - * gs_module_init - * - * Register as a USB gadget driver and a tty driver. - */ -static int __init gs_module_init(void) -{ - int i; - int retval; - - retval = usb_gadget_register_driver(&gs_gadget_driver); - if (retval) { - pr_err("gs_module_init: cannot register gadget driver, " - "ret=%d\n", retval); - return retval; - } - - gs_tty_driver = alloc_tty_driver(GS_NUM_PORTS); - if (!gs_tty_driver) - return -ENOMEM; - gs_tty_driver->owner = THIS_MODULE; - gs_tty_driver->driver_name = GS_SHORT_NAME; - gs_tty_driver->name = "ttygs"; - gs_tty_driver->major = GS_MAJOR; - gs_tty_driver->minor_start = GS_MINOR_START; - gs_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; - gs_tty_driver->subtype = SERIAL_TYPE_NORMAL; - gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; - gs_tty_driver->init_termios = tty_std_termios; - /* must match GS_DEFAULT_DTE_RATE and friends */ - gs_tty_driver->init_termios.c_cflag = - B9600 | CS8 | CREAD | HUPCL | CLOCAL; - gs_tty_driver->init_termios.c_ispeed = GS_DEFAULT_DTE_RATE; - gs_tty_driver->init_termios.c_ospeed = GS_DEFAULT_DTE_RATE; - tty_set_operations(gs_tty_driver, &gs_tty_ops); - - for (i = 0; i < GS_NUM_PORTS; i++) - mutex_init(&gs_open_close_lock[i]); - - retval = tty_register_driver(gs_tty_driver); - if (retval) { - usb_gadget_unregister_driver(&gs_gadget_driver); - put_tty_driver(gs_tty_driver); - pr_err("gs_module_init: cannot register tty driver, " - "ret=%d\n", retval); - return retval; - } - - pr_info("gs_module_init: %s %s loaded\n", - GS_LONG_NAME, GS_VERSION_STR); - return 0; -} -module_init(gs_module_init); - -/* - * gs_module_exit - * - * Unregister as a tty driver and a USB gadget driver. - */ -static void __exit gs_module_exit(void) -{ - tty_unregister_driver(gs_tty_driver); - put_tty_driver(gs_tty_driver); - usb_gadget_unregister_driver(&gs_gadget_driver); - - pr_info("gs_module_exit: %s %s unloaded\n", - GS_LONG_NAME, GS_VERSION_STR); + usb_composite_unregister(&gserial_driver); + gserial_cleanup(); } -module_exit(gs_module_exit); +module_exit(cleanup); diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c new file mode 100644 index 00000000000..5458f43a866 --- /dev/null +++ b/drivers/usb/gadget/u_ether.c @@ -0,0 +1,967 @@ +/* + * u_ether.c -- Ethernet-over-USB link layer utilities for Gadget stack + * + * Copyright (C) 2003-2005,2008 David Brownell + * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger + * Copyright (C) 2008 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* #define VERBOSE_DEBUG */ + +#include <linux/kernel.h> +#include <linux/utsname.h> +#include <linux/device.h> +#include <linux/ctype.h> +#include <linux/etherdevice.h> +#include <linux/ethtool.h> + +#include "u_ether.h" + + +/* + * This component encapsulates the Ethernet link glue needed to provide + * one (!) network link through the USB gadget stack, normally "usb0". + * + * The control and data models are handled by the function driver which + * connects to this code; such as CDC Ethernet, "CDC Subset", or RNDIS. + * That includes all descriptor and endpoint management. + * + * Link level addressing is handled by this component using module + * parameters; if no such parameters are provided, random link level + * addresses are used. Each end of the link uses one address. The + * host end address is exported in various ways, and is often recorded + * in configuration databases. + * + * The driver which assembles each configuration using such a link is + * responsible for ensuring that each configuration includes at most one + * instance of is network link. (The network layer provides ways for + * this single "physical" link to be used by multiple virtual links.) + */ + +#define DRIVER_VERSION "29-May-2008" + +struct eth_dev { + /* lock is held while accessing port_usb + * or updating its backlink port_usb->ioport + */ + spinlock_t lock; + struct gether *port_usb; + + struct net_device *net; + struct usb_gadget *gadget; + + spinlock_t req_lock; /* guard {rx,tx}_reqs */ + struct list_head tx_reqs, rx_reqs; + atomic_t tx_qlen; + + unsigned header_len; + struct sk_buff *(*wrap)(struct sk_buff *skb); + int (*unwrap)(struct sk_buff *skb); + + struct work_struct work; + + unsigned long todo; +#define WORK_RX_MEMORY 0 + + bool zlp; + u8 host_mac[ETH_ALEN]; +}; + +/*-------------------------------------------------------------------------*/ + +#define RX_EXTRA 20 /* bytes guarding against rx overflows */ + +#define DEFAULT_QLEN 2 /* double buffering by default */ + + +#ifdef CONFIG_USB_GADGET_DUALSPEED + +static unsigned qmult = 5; +module_param(qmult, uint, S_IRUGO|S_IWUSR); +MODULE_PARM_DESC(qmult, "queue length multiplier at high speed"); + +#else /* full speed (low speed doesn't do bulk) */ +#define qmult 1 +#endif + +/* for dual-speed hardware, use deeper queues at highspeed */ +static inline int qlen(struct usb_gadget *gadget) +{ + if (gadget_is_dualspeed(gadget) && gadget->speed == USB_SPEED_HIGH) + return qmult * DEFAULT_QLEN; + else + return DEFAULT_QLEN; +} + +/*-------------------------------------------------------------------------*/ + +/* REVISIT there must be a better way than having two sets + * of debug calls ... + */ + +#undef DBG +#undef VDBG +#undef ERROR +#undef WARN +#undef INFO + +#define xprintk(d, level, fmt, args...) \ + printk(level "%s: " fmt , (d)->net->name , ## args) + +#ifdef DEBUG +#undef DEBUG +#define DBG(dev, fmt, args...) \ + xprintk(dev , KERN_DEBUG , fmt , ## args) +#else +#define DBG(dev, fmt, args...) \ + do { } while (0) +#endif /* DEBUG */ + +#ifdef VERBOSE_DEBUG +#define VDBG DBG +#else +#define VDBG(dev, fmt, args...) \ + do { } while (0) +#endif /* DEBUG */ + +#define ERROR(dev, fmt, args...) \ + xprintk(dev , KERN_ERR , fmt , ## args) +#define WARN(dev, fmt, args...) \ + xprintk(dev , KERN_WARNING , fmt , ## args) +#define INFO(dev, fmt, args...) \ + xprintk(dev , KERN_INFO , fmt , ## args) + +/*-------------------------------------------------------------------------*/ + +/* NETWORK DRIVER HOOKUP (to the layer above this driver) */ + +static int eth_change_mtu(struct net_device *net, int new_mtu) +{ + struct eth_dev *dev = netdev_priv(net); + unsigned long flags; + int status = 0; + + /* don't change MTU on "live" link (peer won't know) */ + spin_lock_irqsave(&dev->lock, flags); + if (dev->port_usb) + status = -EBUSY; + else if (new_mtu <= ETH_HLEN || new_mtu > ETH_FRAME_LEN) + status = -ERANGE; + else + net->mtu = new_mtu; + spin_unlock_irqrestore(&dev->lock, flags); + + return status; +} + +static void eth_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *p) +{ + struct eth_dev *dev = netdev_priv(net); + + strlcpy(p->driver, "g_ether", sizeof p->driver); + strlcpy(p->version, DRIVER_VERSION, sizeof p->version); + strlcpy(p->fw_version, dev->gadget->name, sizeof p->fw_version); + strlcpy(p->bus_info, dev_name(&dev->gadget->dev), sizeof p->bus_info); +} + +static u32 eth_get_link(struct net_device *net) +{ + struct eth_dev *dev = netdev_priv(net); + return dev->gadget->speed != USB_SPEED_UNKNOWN; +} + +/* REVISIT can also support: + * - WOL (by tracking suspends and issuing remote wakeup) + * - msglevel (implies updated messaging) + * - ... probably more ethtool ops + */ + +static struct ethtool_ops ops = { + .get_drvinfo = eth_get_drvinfo, + .get_link = eth_get_link +}; + +static void defer_kevent(struct eth_dev *dev, int flag) +{ + if (test_and_set_bit(flag, &dev->todo)) + return; + if (!schedule_work(&dev->work)) + ERROR(dev, "kevent %d may have been dropped\n", flag); + else + DBG(dev, "kevent %d scheduled\n", flag); +} + +static void rx_complete(struct usb_ep *ep, struct usb_request *req); + +static int +rx_submit(struct eth_dev *dev, struct usb_request *req, gfp_t gfp_flags) +{ + struct sk_buff *skb; + int retval = -ENOMEM; + size_t size = 0; + struct usb_ep *out; + unsigned long flags; + + spin_lock_irqsave(&dev->lock, flags); + if (dev->port_usb) + out = dev->port_usb->out_ep; + else + out = NULL; + spin_unlock_irqrestore(&dev->lock, flags); + + if (!out) + return -ENOTCONN; + + + /* Padding up to RX_EXTRA handles minor disagreements with host. + * Normally we use the USB "terminate on short read" convention; + * so allow up to (N*maxpacket), since that memory is normally + * already allocated. Some hardware doesn't deal well with short + * reads (e.g. DMA must be N*maxpacket), so for now don't trim a + * byte off the end (to force hardware errors on overflow). + * + * RNDIS uses internal framing, and explicitly allows senders to + * pad to end-of-packet. That's potentially nice for speed, but + * means receivers can't recover lost synch on their own (because + * new packets don't only start after a short RX). + */ + size += sizeof(struct ethhdr) + dev->net->mtu + RX_EXTRA; + size += dev->port_usb->header_len; + size += out->maxpacket - 1; + size -= size % out->maxpacket; + + skb = alloc_skb(size + NET_IP_ALIGN, gfp_flags); + if (skb == NULL) { + DBG(dev, "no rx skb\n"); + goto enomem; + } + + /* Some platforms perform better when IP packets are aligned, + * but on at least one, checksumming fails otherwise. Note: + * RNDIS headers involve variable numbers of LE32 values. + */ + skb_reserve(skb, NET_IP_ALIGN); + + req->buf = skb->data; + req->length = size; + req->complete = rx_complete; + req->context = skb; + + retval = usb_ep_queue(out, req, gfp_flags); + if (retval == -ENOMEM) +enomem: + defer_kevent(dev, WORK_RX_MEMORY); + if (retval) { + DBG(dev, "rx submit --> %d\n", retval); + if (skb) + dev_kfree_skb_any(skb); + spin_lock_irqsave(&dev->req_lock, flags); + list_add(&req->list, &dev->rx_reqs); + spin_unlock_irqrestore(&dev->req_lock, flags); + } + return retval; +} + +static void rx_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct sk_buff *skb = req->context; + struct eth_dev *dev = ep->driver_data; + int status = req->status; + + switch (status) { + + /* normal completion */ + case 0: + skb_put(skb, req->actual); + if (dev->unwrap) + status = dev->unwrap(skb); + if (status < 0 + || ETH_HLEN > skb->len + || skb->len > ETH_FRAME_LEN) { + dev->net->stats.rx_errors++; + dev->net->stats.rx_length_errors++; + DBG(dev, "rx length %d\n", skb->len); + break; + } + + skb->protocol = eth_type_trans(skb, dev->net); + dev->net->stats.rx_packets++; + dev->net->stats.rx_bytes += skb->len; + + /* no buffer copies needed, unless hardware can't + * use skb buffers. + */ + status = netif_rx(skb); + skb = NULL; + break; + + /* software-driven interface shutdown */ + case -ECONNRESET: /* unlink */ + case -ESHUTDOWN: /* disconnect etc */ + VDBG(dev, "rx shutdown, code %d\n", status); + goto quiesce; + + /* for hardware automagic (such as pxa) */ + case -ECONNABORTED: /* endpoint reset */ + DBG(dev, "rx %s reset\n", ep->name); + defer_kevent(dev, WORK_RX_MEMORY); +quiesce: + dev_kfree_skb_any(skb); + goto clean; + + /* data overrun */ + case -EOVERFLOW: + dev->net->stats.rx_over_errors++; + /* FALLTHROUGH */ + + default: + dev->net->stats.rx_errors++; + DBG(dev, "rx status %d\n", status); + break; + } + + if (skb) + dev_kfree_skb_any(skb); + if (!netif_running(dev->net)) { +clean: + spin_lock(&dev->req_lock); + list_add(&req->list, &dev->rx_reqs); + spin_unlock(&dev->req_lock); + req = NULL; + } + if (req) + rx_submit(dev, req, GFP_ATOMIC); +} + +static int prealloc(struct list_head *list, struct usb_ep *ep, unsigned n) +{ + unsigned i; + struct usb_request *req; + + if (!n) + return -ENOMEM; + + /* queue/recycle up to N requests */ + i = n; + list_for_each_entry(req, list, list) { + if (i-- == 0) + goto extra; + } + while (i--) { + req = usb_ep_alloc_request(ep, GFP_ATOMIC); + if (!req) + return list_empty(list) ? -ENOMEM : 0; + list_add(&req->list, list); + } + return 0; + +extra: + /* free extras */ + for (;;) { + struct list_head *next; + + next = req->list.next; + list_del(&req->list); + usb_ep_free_request(ep, req); + + if (next == list) + break; + + req = container_of(next, struct usb_request, list); + } + return 0; +} + +static int alloc_requests(struct eth_dev *dev, struct gether *link, unsigned n) +{ + int status; + + spin_lock(&dev->req_lock); + status = prealloc(&dev->tx_reqs, link->in_ep, n); + if (status < 0) + goto fail; + status = prealloc(&dev->rx_reqs, link->out_ep, n); + if (status < 0) + goto fail; + goto done; +fail: + DBG(dev, "can't alloc requests\n"); +done: + spin_unlock(&dev->req_lock); + return status; +} + +static void rx_fill(struct eth_dev *dev, gfp_t gfp_flags) +{ + struct usb_request *req; + unsigned long flags; + + /* fill unused rxq slots with some skb */ + spin_lock_irqsave(&dev->req_lock, flags); + while (!list_empty(&dev->rx_reqs)) { + req = container_of(dev->rx_reqs.next, + struct usb_request, list); + list_del_init(&req->list); + spin_unlock_irqrestore(&dev->req_lock, flags); + + if (rx_submit(dev, req, gfp_flags) < 0) { + defer_kevent(dev, WORK_RX_MEMORY); + return; + } + + spin_lock_irqsave(&dev->req_lock, flags); + } + spin_unlock_irqrestore(&dev->req_lock, flags); +} + +static void eth_work(struct work_struct *work) +{ + struct eth_dev *dev = container_of(work, struct eth_dev, work); + + if (test_and_clear_bit(WORK_RX_MEMORY, &dev->todo)) { + if (netif_running(dev->net)) + rx_fill(dev, GFP_KERNEL); + } + + if (dev->todo) + DBG(dev, "work done, flags = 0x%lx\n", dev->todo); +} + +static void tx_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct sk_buff *skb = req->context; + struct eth_dev *dev = ep->driver_data; + + switch (req->status) { + default: + dev->net->stats.tx_errors++; + VDBG(dev, "tx err %d\n", req->status); + /* FALLTHROUGH */ + case -ECONNRESET: /* unlink */ + case -ESHUTDOWN: /* disconnect etc */ + break; + case 0: + dev->net->stats.tx_bytes += skb->len; + } + dev->net->stats.tx_packets++; + + spin_lock(&dev->req_lock); + list_add(&req->list, &dev->tx_reqs); + spin_unlock(&dev->req_lock); + dev_kfree_skb_any(skb); + + atomic_dec(&dev->tx_qlen); + if (netif_carrier_ok(dev->net)) + netif_wake_queue(dev->net); +} + +static inline int is_promisc(u16 cdc_filter) +{ + return cdc_filter & USB_CDC_PACKET_TYPE_PROMISCUOUS; +} + +static int eth_start_xmit(struct sk_buff *skb, struct net_device *net) +{ + struct eth_dev *dev = netdev_priv(net); + int length = skb->len; + int retval; + struct usb_request *req = NULL; + unsigned long flags; + struct usb_ep *in; + u16 cdc_filter; + + spin_lock_irqsave(&dev->lock, flags); + if (dev->port_usb) { + in = dev->port_usb->in_ep; + cdc_filter = dev->port_usb->cdc_filter; + } else { + in = NULL; + cdc_filter = 0; + } + spin_unlock_irqrestore(&dev->lock, flags); + + if (!in) { + dev_kfree_skb_any(skb); + return 0; + } + + /* apply outgoing CDC or RNDIS filters */ + if (!is_promisc(cdc_filter)) { + u8 *dest = skb->data; + + if (is_multicast_ether_addr(dest)) { + u16 type; + + /* ignores USB_CDC_PACKET_TYPE_MULTICAST and host + * SET_ETHERNET_MULTICAST_FILTERS requests + */ + if (is_broadcast_ether_addr(dest)) + type = USB_CDC_PACKET_TYPE_BROADCAST; + else + type = USB_CDC_PACKET_TYPE_ALL_MULTICAST; + if (!(cdc_filter & type)) { + dev_kfree_skb_any(skb); + return 0; + } + } + /* ignores USB_CDC_PACKET_TYPE_DIRECTED */ + } + + spin_lock_irqsave(&dev->req_lock, flags); + /* + * this freelist can be empty if an interrupt triggered disconnect() + * and reconfigured the gadget (shutting down this queue) after the + * network stack decided to xmit but before we got the spinlock. + */ + if (list_empty(&dev->tx_reqs)) { + spin_unlock_irqrestore(&dev->req_lock, flags); + return 1; + } + + req = container_of(dev->tx_reqs.next, struct usb_request, list); + list_del(&req->list); + + /* temporarily stop TX queue when the freelist empties */ + if (list_empty(&dev->tx_reqs)) + netif_stop_queue(net); + spin_unlock_irqrestore(&dev->req_lock, flags); + + /* no buffer copies needed, unless the network stack did it + * or the hardware can't use skb buffers. + * or there's not enough space for extra headers we need + */ + if (dev->wrap) { + struct sk_buff *skb_new; + + skb_new = dev->wrap(skb); + if (!skb_new) + goto drop; + + dev_kfree_skb_any(skb); + skb = skb_new; + length = skb->len; + } + req->buf = skb->data; + req->context = skb; + req->complete = tx_complete; + + /* use zlp framing on tx for strict CDC-Ether conformance, + * though any robust network rx path ignores extra padding. + * and some hardware doesn't like to write zlps. + */ + req->zero = 1; + if (!dev->zlp && (length % in->maxpacket) == 0) + length++; + + req->length = length; + + /* throttle highspeed IRQ rate back slightly */ + if (gadget_is_dualspeed(dev->gadget)) + req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH) + ? ((atomic_read(&dev->tx_qlen) % qmult) != 0) + : 0; + + retval = usb_ep_queue(in, req, GFP_ATOMIC); + switch (retval) { + default: + DBG(dev, "tx queue err %d\n", retval); + break; + case 0: + net->trans_start = jiffies; + atomic_inc(&dev->tx_qlen); + } + + if (retval) { +drop: + dev->net->stats.tx_dropped++; + dev_kfree_skb_any(skb); + spin_lock_irqsave(&dev->req_lock, flags); + if (list_empty(&dev->tx_reqs)) + netif_start_queue(net); + list_add(&req->list, &dev->tx_reqs); + spin_unlock_irqrestore(&dev->req_lock, flags); + } + return 0; +} + +/*-------------------------------------------------------------------------*/ + +static void eth_start(struct eth_dev *dev, gfp_t gfp_flags) +{ + DBG(dev, "%s\n", __func__); + + /* fill the rx queue */ + rx_fill(dev, gfp_flags); + + /* and open the tx floodgates */ + atomic_set(&dev->tx_qlen, 0); + netif_wake_queue(dev->net); +} + +static int eth_open(struct net_device *net) +{ + struct eth_dev *dev = netdev_priv(net); + struct gether *link; + + DBG(dev, "%s\n", __func__); + if (netif_carrier_ok(dev->net)) + eth_start(dev, GFP_KERNEL); + + spin_lock_irq(&dev->lock); + link = dev->port_usb; + if (link && link->open) + link->open(link); + spin_unlock_irq(&dev->lock); + + return 0; +} + +static int eth_stop(struct net_device *net) +{ + struct eth_dev *dev = netdev_priv(net); + unsigned long flags; + + VDBG(dev, "%s\n", __func__); + netif_stop_queue(net); + + DBG(dev, "stop stats: rx/tx %ld/%ld, errs %ld/%ld\n", + dev->net->stats.rx_packets, dev->net->stats.tx_packets, + dev->net->stats.rx_errors, dev->net->stats.tx_errors + ); + + /* ensure there are no more active requests */ + spin_lock_irqsave(&dev->lock, flags); + if (dev->port_usb) { + struct gether *link = dev->port_usb; + + if (link->close) + link->close(link); + + /* NOTE: we have no abort-queue primitive we could use + * to cancel all pending I/O. Instead, we disable then + * reenable the endpoints ... this idiom may leave toggle + * wrong, but that's a self-correcting error. + * + * REVISIT: we *COULD* just let the transfers complete at + * their own pace; the network stack can handle old packets. + * For the moment we leave this here, since it works. + */ + usb_ep_disable(link->in_ep); + usb_ep_disable(link->out_ep); + if (netif_carrier_ok(net)) { + DBG(dev, "host still using in/out endpoints\n"); + usb_ep_enable(link->in_ep, link->in); + usb_ep_enable(link->out_ep, link->out); + } + } + spin_unlock_irqrestore(&dev->lock, flags); + + return 0; +} + +/*-------------------------------------------------------------------------*/ + +/* initial value, changed by "ifconfig usb0 hw ether xx:xx:xx:xx:xx:xx" */ +static char *dev_addr; +module_param(dev_addr, charp, S_IRUGO); +MODULE_PARM_DESC(dev_addr, "Device Ethernet Address"); + +/* this address is invisible to ifconfig */ +static char *host_addr; +module_param(host_addr, charp, S_IRUGO); +MODULE_PARM_DESC(host_addr, "Host Ethernet Address"); + + +static u8 __init nibble(unsigned char c) +{ + if (isdigit(c)) + return c - '0'; + c = toupper(c); + if (isxdigit(c)) + return 10 + c - 'A'; + return 0; +} + +static int __init get_ether_addr(const char *str, u8 *dev_addr) +{ + if (str) { + unsigned i; + + for (i = 0; i < 6; i++) { + unsigned char num; + + if ((*str == '.') || (*str == ':')) + str++; + num = nibble(*str++) << 4; + num |= (nibble(*str++)); + dev_addr [i] = num; + } + if (is_valid_ether_addr(dev_addr)) + return 0; + } + random_ether_addr(dev_addr); + return 1; +} + +static struct eth_dev *the_dev; + + +/** + * gether_setup - initialize one ethernet-over-usb link + * @g: gadget to associated with these links + * @ethaddr: NULL, or a buffer in which the ethernet address of the + * host side of the link is recorded + * Context: may sleep + * + * This sets up the single network link that may be exported by a + * gadget driver using this framework. The link layer addresses are + * set up using module parameters. + * + * Returns negative errno, or zero on success + */ +int __init gether_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN]) +{ + struct eth_dev *dev; + struct net_device *net; + int status; + + if (the_dev) + return -EBUSY; + + net = alloc_etherdev(sizeof *dev); + if (!net) + return -ENOMEM; + + dev = netdev_priv(net); + spin_lock_init(&dev->lock); + spin_lock_init(&dev->req_lock); + INIT_WORK(&dev->work, eth_work); + INIT_LIST_HEAD(&dev->tx_reqs); + INIT_LIST_HEAD(&dev->rx_reqs); + + /* network device setup */ + dev->net = net; + strcpy(net->name, "usb%d"); + + if (get_ether_addr(dev_addr, net->dev_addr)) + dev_warn(&g->dev, + "using random %s ethernet address\n", "self"); + if (get_ether_addr(host_addr, dev->host_mac)) + dev_warn(&g->dev, + "using random %s ethernet address\n", "host"); + + if (ethaddr) + memcpy(ethaddr, dev->host_mac, ETH_ALEN); + + net->change_mtu = eth_change_mtu; + net->hard_start_xmit = eth_start_xmit; + net->open = eth_open; + net->stop = eth_stop; + /* watchdog_timeo, tx_timeout ... */ + /* set_multicast_list */ + SET_ETHTOOL_OPS(net, &ops); + + /* two kinds of host-initiated state changes: + * - iff DATA transfer is active, carrier is "on" + * - tx queueing enabled if open *and* carrier is "on" + */ + netif_stop_queue(net); + netif_carrier_off(net); + + dev->gadget = g; + SET_NETDEV_DEV(net, &g->dev); + + status = register_netdev(net); + if (status < 0) { + dev_dbg(&g->dev, "register_netdev failed, %d\n", status); + free_netdev(net); + } else { + DECLARE_MAC_BUF(tmp); + + INFO(dev, "MAC %s\n", print_mac(tmp, net->dev_addr)); + INFO(dev, "HOST MAC %s\n", print_mac(tmp, dev->host_mac)); + + the_dev = dev; + } + + return status; +} + +/** + * gether_cleanup - remove Ethernet-over-USB device + * Context: may sleep + * + * This is called to free all resources allocated by @gether_setup(). + */ +void gether_cleanup(void) +{ + if (!the_dev) + return; + + unregister_netdev(the_dev->net); + free_netdev(the_dev->net); + + /* assuming we used keventd, it must quiesce too */ + flush_scheduled_work(); + + the_dev = NULL; +} + + +/** + * gether_connect - notify network layer that USB link is active + * @link: the USB link, set up with endpoints, descriptors matching + * current device speed, and any framing wrapper(s) set up. + * Context: irqs blocked + * + * This is called to activate endpoints and let the network layer know + * the connection is active ("carrier detect"). It may cause the I/O + * queues to open and start letting network packets flow, but will in + * any case activate the endpoints so that they respond properly to the + * USB host. + * + * Verify net_device pointer returned using IS_ERR(). If it doesn't + * indicate some error code (negative errno), ep->driver_data values + * have been overwritten. + */ +struct net_device *gether_connect(struct gether *link) +{ + struct eth_dev *dev = the_dev; + int result = 0; + + if (!dev) + return ERR_PTR(-EINVAL); + + link->in_ep->driver_data = dev; + result = usb_ep_enable(link->in_ep, link->in); + if (result != 0) { + DBG(dev, "enable %s --> %d\n", + link->in_ep->name, result); + goto fail0; + } + + link->out_ep->driver_data = dev; + result = usb_ep_enable(link->out_ep, link->out); + if (result != 0) { + DBG(dev, "enable %s --> %d\n", + link->out_ep->name, result); + goto fail1; + } + + if (result == 0) + result = alloc_requests(dev, link, qlen(dev->gadget)); + + if (result == 0) { + dev->zlp = link->is_zlp_ok; + DBG(dev, "qlen %d\n", qlen(dev->gadget)); + + dev->header_len = link->header_len; + dev->unwrap = link->unwrap; + dev->wrap = link->wrap; + + spin_lock(&dev->lock); + dev->port_usb = link; + link->ioport = dev; + spin_unlock(&dev->lock); + + netif_carrier_on(dev->net); + if (netif_running(dev->net)) + eth_start(dev, GFP_ATOMIC); + + /* on error, disable any endpoints */ + } else { + (void) usb_ep_disable(link->out_ep); +fail1: + (void) usb_ep_disable(link->in_ep); + } +fail0: + /* caller is responsible for cleanup on error */ + if (result < 0) + return ERR_PTR(result); + return dev->net; +} + +/** + * gether_disconnect - notify network layer that USB link is inactive + * @link: the USB link, on which gether_connect() was called + * Context: irqs blocked + * + * This is called to deactivate endpoints and let the network layer know + * the connection went inactive ("no carrier"). + * + * On return, the state is as if gether_connect() had never been called. + * The endpoints are inactive, and accordingly without active USB I/O. + * Pointers to endpoint descriptors and endpoint private data are nulled. + */ +void gether_disconnect(struct gether *link) +{ + struct eth_dev *dev = link->ioport; + struct usb_request *req; + + WARN_ON(!dev); + if (!dev) + return; + + DBG(dev, "%s\n", __func__); + + netif_stop_queue(dev->net); + netif_carrier_off(dev->net); + + /* disable endpoints, forcing (synchronous) completion + * of all pending i/o. then free the request objects + * and forget about the endpoints. + */ + usb_ep_disable(link->in_ep); + spin_lock(&dev->req_lock); + while (!list_empty(&dev->tx_reqs)) { + req = container_of(dev->tx_reqs.next, + struct usb_request, list); + list_del(&req->list); + + spin_unlock(&dev->req_lock); + usb_ep_free_request(link->in_ep, req); + spin_lock(&dev->req_lock); + } + spin_unlock(&dev->req_lock); + link->in_ep->driver_data = NULL; + link->in = NULL; + + usb_ep_disable(link->out_ep); + spin_lock(&dev->req_lock); + while (!list_empty(&dev->rx_reqs)) { + req = container_of(dev->rx_reqs.next, + struct usb_request, list); + list_del(&req->list); + + spin_unlock(&dev->req_lock); + usb_ep_free_request(link->out_ep, req); + spin_lock(&dev->req_lock); + } + spin_unlock(&dev->req_lock); + link->out_ep->driver_data = NULL; + link->out = NULL; + + /* finish forgetting about this USB link episode */ + dev->header_len = 0; + dev->unwrap = NULL; + dev->wrap = NULL; + + spin_lock(&dev->lock); + dev->port_usb = NULL; + link->ioport = NULL; + spin_unlock(&dev->lock); +} diff --git a/drivers/usb/gadget/u_ether.h b/drivers/usb/gadget/u_ether.h new file mode 100644 index 00000000000..0d1f7ae3b07 --- /dev/null +++ b/drivers/usb/gadget/u_ether.h @@ -0,0 +1,127 @@ +/* + * u_ether.h -- interface to USB gadget "ethernet link" utilities + * + * Copyright (C) 2003-2005,2008 David Brownell + * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger + * Copyright (C) 2008 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __U_ETHER_H +#define __U_ETHER_H + +#include <linux/err.h> +#include <linux/if_ether.h> +#include <linux/usb/composite.h> +#include <linux/usb/cdc.h> + +#include "gadget_chips.h" + + +/* + * This represents the USB side of an "ethernet" link, managed by a USB + * function which provides control and (maybe) framing. Two functions + * in different configurations could share the same ethernet link/netdev, + * using different host interaction models. + * + * There is a current limitation that only one instance of this link may + * be present in any given configuration. When that's a problem, network + * layer facilities can be used to package multiple logical links on this + * single "physical" one. + */ +struct gether { + struct usb_function func; + + /* updated by gether_{connect,disconnect} */ + struct eth_dev *ioport; + + /* endpoints handle full and/or high speeds */ + struct usb_ep *in_ep; + struct usb_ep *out_ep; + + /* descriptors match device speed at gether_connect() time */ + struct usb_endpoint_descriptor *in; + struct usb_endpoint_descriptor *out; + + bool is_zlp_ok; + + u16 cdc_filter; + + /* hooks for added framing, as needed for RNDIS and EEM. + * we currently don't support multiple frames per SKB. + */ + u32 header_len; + struct sk_buff *(*wrap)(struct sk_buff *skb); + int (*unwrap)(struct sk_buff *skb); + + /* called on network open/close */ + void (*open)(struct gether *); + void (*close)(struct gether *); +}; + +#define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \ + |USB_CDC_PACKET_TYPE_ALL_MULTICAST \ + |USB_CDC_PACKET_TYPE_PROMISCUOUS \ + |USB_CDC_PACKET_TYPE_DIRECTED) + + +/* netdev setup/teardown as directed by the gadget driver */ +int gether_setup(struct usb_gadget *g, u8 ethaddr[ETH_ALEN]); +void gether_cleanup(void); + +/* connect/disconnect is handled by individual functions */ +struct net_device *gether_connect(struct gether *); +void gether_disconnect(struct gether *); + +/* Some controllers can't support CDC Ethernet (ECM) ... */ +static inline bool can_support_ecm(struct usb_gadget *gadget) +{ + if (!gadget_supports_altsettings(gadget)) + return false; + + /* SA1100 can do ECM, *without* status endpoint ... but we'll + * only use it in non-ECM mode for backwards compatibility + * (and since we currently require a status endpoint) + */ + if (gadget_is_sa1100(gadget)) + return false; + + /* Everything else is *presumably* fine ... but this is a bit + * chancy, so be **CERTAIN** there are no hardware issues with + * your controller. Add it above if it can't handle CDC. + */ + return true; +} + +/* each configuration may bind one instance of an ethernet link */ +int geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); +int ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); + +#ifdef CONFIG_USB_ETH_RNDIS + +int rndis_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); + +#else + +static inline int +rndis_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) +{ + return 0; +} + +#endif + +#endif /* __U_ETHER_H */ diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c new file mode 100644 index 00000000000..abf9505d3a7 --- /dev/null +++ b/drivers/usb/gadget/u_serial.c @@ -0,0 +1,1246 @@ +/* + * u_serial.c - utilities for USB gadget "serial port"/TTY support + * + * Copyright (C) 2003 Al Borchers (alborchers@steinerpoint.com) + * Copyright (C) 2008 David Brownell + * Copyright (C) 2008 by Nokia Corporation + * + * This code also borrows from usbserial.c, which is + * Copyright (C) 1999 - 2002 Greg Kroah-Hartman (greg@kroah.com) + * Copyright (C) 2000 Peter Berger (pberger@brimson.com) + * Copyright (C) 2000 Al Borchers (alborchers@steinerpoint.com) + * + * This software is distributed under the terms of the GNU General + * Public License ("GPL") as published by the Free Software Foundation, + * either version 2 of that License or (at your option) any later version. + */ + +/* #define VERBOSE_DEBUG */ + +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/device.h> +#include <linux/delay.h> +#include <linux/tty.h> +#include <linux/tty_flip.h> + +#include "u_serial.h" + + +/* + * This component encapsulates the TTY layer glue needed to provide basic + * "serial port" functionality through the USB gadget stack. Each such + * port is exposed through a /dev/ttyGS* node. + * + * After initialization (gserial_setup), these TTY port devices stay + * available until they are removed (gserial_cleanup). Each one may be + * connected to a USB function (gserial_connect), or disconnected (with + * gserial_disconnect) when the USB host issues a config change event. + * Data can only flow when the port is connected to the host. + * + * A given TTY port can be made available in multiple configurations. + * For example, each one might expose a ttyGS0 node which provides a + * login application. In one case that might use CDC ACM interface 0, + * while another configuration might use interface 3 for that. The + * work to handle that (including descriptor management) is not part + * of this component. + * + * Configurations may expose more than one TTY port. For example, if + * ttyGS0 provides login service, then ttyGS1 might provide dialer access + * for a telephone or fax link. And ttyGS2 might be something that just + * needs a simple byte stream interface for some messaging protocol that + * is managed in userspace ... OBEX, PTP, and MTP have been mentioned. + */ + +/* + * gserial is the lifecycle interface, used by USB functions + * gs_port is the I/O nexus, used by the tty driver + * tty_struct links to the tty/filesystem framework + * + * gserial <---> gs_port ... links will be null when the USB link is + * inactive; managed by gserial_{connect,disconnect}(). + * gserial->ioport == usb_ep->driver_data ... gs_port + * gs_port->port_usb ... gserial + * + * gs_port <---> tty_struct ... links will be null when the TTY file + * isn't opened; managed by gs_open()/gs_close() + * gserial->port_tty ... tty_struct + * tty_struct->driver_data ... gserial + */ + +/* RX and TX queues can buffer QUEUE_SIZE packets before they hit the + * next layer of buffering. For TX that's a circular buffer; for RX + * consider it a NOP. A third layer is provided by the TTY code. + */ +#define QUEUE_SIZE 16 +#define WRITE_BUF_SIZE 8192 /* TX only */ + +/* circular buffer */ +struct gs_buf { + unsigned buf_size; + char *buf_buf; + char *buf_get; + char *buf_put; +}; + +/* + * The port structure holds info for each port, one for each minor number + * (and thus for each /dev/ node). + */ +struct gs_port { + spinlock_t port_lock; /* guard port_* access */ + + struct gserial *port_usb; + struct tty_struct *port_tty; + + unsigned open_count; + bool openclose; /* open/close in progress */ + u8 port_num; + + wait_queue_head_t close_wait; /* wait for last close */ + + struct list_head read_pool; + struct tasklet_struct push; + + struct list_head write_pool; + struct gs_buf port_write_buf; + wait_queue_head_t drain_wait; /* wait while writes drain */ + + /* REVISIT this state ... */ + struct usb_cdc_line_coding port_line_coding; /* 8-N-1 etc */ +}; + +/* increase N_PORTS if you need more */ +#define N_PORTS 4 +static struct portmaster { + struct mutex lock; /* protect open/close */ + struct gs_port *port; +} ports[N_PORTS]; +static unsigned n_ports; + +#define GS_CLOSE_TIMEOUT 15 /* seconds */ + + + +#ifdef VERBOSE_DEBUG +#define pr_vdebug(fmt, arg...) \ + pr_debug(fmt, ##arg) +#else +#define pr_vdebug(fmt, arg...) \ + ({ if (0) pr_debug(fmt, ##arg); }) +#endif + +/*-------------------------------------------------------------------------*/ + +/* Circular Buffer */ + +/* + * gs_buf_alloc + * + * Allocate a circular buffer and all associated memory. + */ +static int gs_buf_alloc(struct gs_buf *gb, unsigned size) +{ + gb->buf_buf = kmalloc(size, GFP_KERNEL); + if (gb->buf_buf == NULL) + return -ENOMEM; + + gb->buf_size = size; + gb->buf_put = gb->buf_buf; + gb->buf_get = gb->buf_buf; + + return 0; +} + +/* + * gs_buf_free + * + * Free the buffer and all associated memory. + */ +static void gs_buf_free(struct gs_buf *gb) +{ + kfree(gb->buf_buf); + gb->buf_buf = NULL; +} + +/* + * gs_buf_clear + * + * Clear out all data in the circular buffer. + */ +static void gs_buf_clear(struct gs_buf *gb) +{ + gb->buf_get = gb->buf_put; + /* equivalent to a get of all data available */ +} + +/* + * gs_buf_data_avail + * + * Return the number of bytes of data available in the circular + * buffer. + */ +static unsigned gs_buf_data_avail(struct gs_buf *gb) +{ + return (gb->buf_size + gb->buf_put - gb->buf_get) % gb->buf_size; +} + +/* + * gs_buf_space_avail + * + * Return the number of bytes of space available in the circular + * buffer. + */ +static unsigned gs_buf_space_avail(struct gs_buf *gb) +{ + return (gb->buf_size + gb->buf_get - gb->buf_put - 1) % gb->buf_size; +} + +/* + * gs_buf_put + * + * Copy data data from a user buffer and put it into the circular buffer. + * Restrict to the amount of space available. + * + * Return the number of bytes copied. + */ +static unsigned +gs_buf_put(struct gs_buf *gb, const char *buf, unsigned count) +{ + unsigned len; + + len = gs_buf_space_avail(gb); + if (count > len) + count = len; + + if (count == 0) + return 0; + + len = gb->buf_buf + gb->buf_size - gb->buf_put; + if (count > len) { + memcpy(gb->buf_put, buf, len); + memcpy(gb->buf_buf, buf+len, count - len); + gb->buf_put = gb->buf_buf + count - len; + } else { + memcpy(gb->buf_put, buf, count); + if (count < len) + gb->buf_put += count; + else /* count == len */ + gb->buf_put = gb->buf_buf; + } + + return count; +} + +/* + * gs_buf_get + * + * Get data from the circular buffer and copy to the given buffer. + * Restrict to the amount of data available. + * + * Return the number of bytes copied. + */ +static unsigned +gs_buf_get(struct gs_buf *gb, char *buf, unsigned count) +{ + unsigned len; + + len = gs_buf_data_avail(gb); + if (count > len) + count = len; + + if (count == 0) + return 0; + + len = gb->buf_buf + gb->buf_size - gb->buf_get; + if (count > len) { + memcpy(buf, gb->buf_get, len); + memcpy(buf+len, gb->buf_buf, count - len); + gb->buf_get = gb->buf_buf + count - len; + } else { + memcpy(buf, gb->buf_get, count); + if (count < len) + gb->buf_get += count; + else /* count == len */ + gb->buf_get = gb->buf_buf; + } + + return count; +} + +/*-------------------------------------------------------------------------*/ + +/* I/O glue between TTY (upper) and USB function (lower) driver layers */ + +/* + * gs_alloc_req + * + * Allocate a usb_request and its buffer. Returns a pointer to the + * usb_request or NULL if there is an error. + */ +static struct usb_request * +gs_alloc_req(struct usb_ep *ep, unsigned len, gfp_t kmalloc_flags) +{ + struct usb_request *req; + + req = usb_ep_alloc_request(ep, kmalloc_flags); + + if (req != NULL) { + req->length = len; + req->buf = kmalloc(len, kmalloc_flags); + if (req->buf == NULL) { + usb_ep_free_request(ep, req); + return NULL; + } + } + + return req; +} + +/* + * gs_free_req + * + * Free a usb_request and its buffer. + */ +static void gs_free_req(struct usb_ep *ep, struct usb_request *req) +{ + kfree(req->buf); + usb_ep_free_request(ep, req); +} + +/* + * gs_send_packet + * + * If there is data to send, a packet is built in the given + * buffer and the size is returned. If there is no data to + * send, 0 is returned. + * + * Called with port_lock held. + */ +static unsigned +gs_send_packet(struct gs_port *port, char *packet, unsigned size) +{ + unsigned len; + + len = gs_buf_data_avail(&port->port_write_buf); + if (len < size) + size = len; + if (size != 0) + size = gs_buf_get(&port->port_write_buf, packet, size); + return size; +} + +/* + * gs_start_tx + * + * This function finds available write requests, calls + * gs_send_packet to fill these packets with data, and + * continues until either there are no more write requests + * available or no more data to send. This function is + * run whenever data arrives or write requests are available. + * + * Context: caller owns port_lock; port_usb is non-null. + */ +static int gs_start_tx(struct gs_port *port) +/* +__releases(&port->port_lock) +__acquires(&port->port_lock) +*/ +{ + struct list_head *pool = &port->write_pool; + struct usb_ep *in = port->port_usb->in; + int status = 0; + bool do_tty_wake = false; + + while (!list_empty(pool)) { + struct usb_request *req; + int len; + + req = list_entry(pool->next, struct usb_request, list); + len = gs_send_packet(port, req->buf, in->maxpacket); + if (len == 0) { + wake_up_interruptible(&port->drain_wait); + break; + } + do_tty_wake = true; + + req->length = len; + list_del(&req->list); + +#ifdef VERBOSE_DEBUG + pr_debug("%s: %s, len=%d, 0x%02x 0x%02x 0x%02x ...\n", + __func__, in->name, len, *((u8 *)req->buf), + *((u8 *)req->buf+1), *((u8 *)req->buf+2)); +#endif + + /* Drop lock while we call out of driver; completions + * could be issued while we do so. Disconnection may + * happen too; maybe immediately before we queue this! + * + * NOTE that we may keep sending data for a while after + * the TTY closed (dev->ioport->port_tty is NULL). + */ + spin_unlock(&port->port_lock); + status = usb_ep_queue(in, req, GFP_ATOMIC); + spin_lock(&port->port_lock); + + if (status) { + pr_debug("%s: %s %s err %d\n", + __func__, "queue", in->name, status); + list_add(&req->list, pool); + break; + } + + /* abort immediately after disconnect */ + if (!port->port_usb) + break; + } + + if (do_tty_wake && port->port_tty) + tty_wakeup(port->port_tty); + return status; +} + +static void gs_rx_push(unsigned long _port) +{ + struct gs_port *port = (void *)_port; + struct tty_struct *tty = port->port_tty; + + /* With low_latency, tty_flip_buffer_push() doesn't put its + * real work through a workqueue, so the ldisc has a better + * chance to keep up with peak USB data rates. + */ + if (tty) { + tty_flip_buffer_push(tty); + wake_up_interruptible(&tty->read_wait); + } +} + +/* + * gs_recv_packet + * + * Called for each USB packet received. Reads the packet + * header and stuffs the data in the appropriate tty buffer. + * Returns 0 if successful, or a negative error number. + * + * Called during USB completion routine, on interrupt time. + * With port_lock. + */ +static int gs_recv_packet(struct gs_port *port, char *packet, unsigned size) +{ + unsigned len; + struct tty_struct *tty; + + /* I/O completions can continue for a while after close(), until the + * request queue empties. Just discard any data we receive, until + * something reopens this TTY ... as if there were no HW flow control. + */ + tty = port->port_tty; + if (tty == NULL) { + pr_vdebug("%s: ttyGS%d, after close\n", + __func__, port->port_num); + return -EIO; + } + + len = tty_insert_flip_string(tty, packet, size); + if (len > 0) + tasklet_schedule(&port->push); + if (len < size) + pr_debug("%s: ttyGS%d, drop %d bytes\n", + __func__, port->port_num, size - len); + return 0; +} + +/* + * Context: caller owns port_lock, and port_usb is set + */ +static unsigned gs_start_rx(struct gs_port *port) +/* +__releases(&port->port_lock) +__acquires(&port->port_lock) +*/ +{ + struct list_head *pool = &port->read_pool; + struct usb_ep *out = port->port_usb->out; + unsigned started = 0; + + while (!list_empty(pool)) { + struct usb_request *req; + int status; + struct tty_struct *tty; + + /* no more rx if closed or throttled */ + tty = port->port_tty; + if (!tty || test_bit(TTY_THROTTLED, &tty->flags)) + break; + + req = list_entry(pool->next, struct usb_request, list); + list_del(&req->list); + req->length = out->maxpacket; + + /* drop lock while we call out; the controller driver + * may need to call us back (e.g. for disconnect) + */ + spin_unlock(&port->port_lock); + status = usb_ep_queue(out, req, GFP_ATOMIC); + spin_lock(&port->port_lock); + + if (status) { + pr_debug("%s: %s %s err %d\n", + __func__, "queue", out->name, status); + list_add(&req->list, pool); + break; + } + started++; + + /* abort immediately after disconnect */ + if (!port->port_usb) + break; + } + return started; +} + +static void gs_read_complete(struct usb_ep *ep, struct usb_request *req) +{ + int status; + struct gs_port *port = ep->driver_data; + + spin_lock(&port->port_lock); + list_add(&req->list, &port->read_pool); + + switch (req->status) { + case 0: + /* normal completion */ + status = gs_recv_packet(port, req->buf, req->actual); + if (status && status != -EIO) + pr_debug("%s: %s %s err %d\n", + __func__, "recv", ep->name, status); + gs_start_rx(port); + break; + + case -ESHUTDOWN: + /* disconnect */ + pr_vdebug("%s: %s shutdown\n", __func__, ep->name); + break; + + default: + /* presumably a transient fault */ + pr_warning("%s: unexpected %s status %d\n", + __func__, ep->name, req->status); + gs_start_rx(port); + break; + } + spin_unlock(&port->port_lock); +} + +static void gs_write_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct gs_port *port = ep->driver_data; + + spin_lock(&port->port_lock); + list_add(&req->list, &port->write_pool); + + switch (req->status) { + default: + /* presumably a transient fault */ + pr_warning("%s: unexpected %s status %d\n", + __func__, ep->name, req->status); + /* FALL THROUGH */ + case 0: + /* normal completion */ + gs_start_tx(port); + break; + + case -ESHUTDOWN: + /* disconnect */ + pr_vdebug("%s: %s shutdown\n", __func__, ep->name); + break; + } + + spin_unlock(&port->port_lock); +} + +static void gs_free_requests(struct usb_ep *ep, struct list_head *head) +{ + struct usb_request *req; + + while (!list_empty(head)) { + req = list_entry(head->next, struct usb_request, list); + list_del(&req->list); + gs_free_req(ep, req); + } +} + +static int gs_alloc_requests(struct usb_ep *ep, struct list_head *head, + void (*fn)(struct usb_ep *, struct usb_request *)) +{ + int i; + struct usb_request *req; + + /* Pre-allocate up to QUEUE_SIZE transfers, but if we can't + * do quite that many this time, don't fail ... we just won't + * be as speedy as we might otherwise be. + */ + for (i = 0; i < QUEUE_SIZE; i++) { + req = gs_alloc_req(ep, ep->maxpacket, GFP_ATOMIC); + if (!req) + return list_empty(head) ? -ENOMEM : 0; + req->complete = fn; + list_add_tail(&req->list, head); + } + return 0; +} + +/** + * gs_start_io - start USB I/O streams + * @dev: encapsulates endpoints to use + * Context: holding port_lock; port_tty and port_usb are non-null + * + * We only start I/O when something is connected to both sides of + * this port. If nothing is listening on the host side, we may + * be pointlessly filling up our TX buffers and FIFO. + */ +static int gs_start_io(struct gs_port *port) +{ + struct list_head *head = &port->read_pool; + struct usb_ep *ep = port->port_usb->out; + int status; + unsigned started; + + /* Allocate RX and TX I/O buffers. We can't easily do this much + * earlier (with GFP_KERNEL) because the requests are coupled to + * endpoints, as are the packet sizes we'll be using. Different + * configurations may use different endpoints with a given port; + * and high speed vs full speed changes packet sizes too. + */ + status = gs_alloc_requests(ep, head, gs_read_complete); + if (status) + return status; + + status = gs_alloc_requests(port->port_usb->in, &port->write_pool, + gs_write_complete); + if (status) { + gs_free_requests(ep, head); + return status; + } + + /* queue read requests */ + started = gs_start_rx(port); + + /* unblock any pending writes into our circular buffer */ + if (started) { + tty_wakeup(port->port_tty); + } else { + gs_free_requests(ep, head); + gs_free_requests(port->port_usb->in, &port->write_pool); + } + + return started ? 0 : status; +} + +/*-------------------------------------------------------------------------*/ + +/* TTY Driver */ + +/* + * gs_open sets up the link between a gs_port and its associated TTY. + * That link is broken *only* by TTY close(), and all driver methods + * know that. + */ +static int gs_open(struct tty_struct *tty, struct file *file) +{ + int port_num = tty->index; + struct gs_port *port; + int status; + + if (port_num < 0 || port_num >= n_ports) + return -ENXIO; + + do { + mutex_lock(&ports[port_num].lock); + port = ports[port_num].port; + if (!port) + status = -ENODEV; + else { + spin_lock_irq(&port->port_lock); + + /* already open? Great. */ + if (port->open_count) { + status = 0; + port->open_count++; + + /* currently opening/closing? wait ... */ + } else if (port->openclose) { + status = -EBUSY; + + /* ... else we do the work */ + } else { + status = -EAGAIN; + port->openclose = true; + } + spin_unlock_irq(&port->port_lock); + } + mutex_unlock(&ports[port_num].lock); + + switch (status) { + default: + /* fully handled */ + return status; + case -EAGAIN: + /* must do the work */ + break; + case -EBUSY: + /* wait for EAGAIN task to finish */ + msleep(1); + /* REVISIT could have a waitchannel here, if + * concurrent open performance is important + */ + break; + } + } while (status != -EAGAIN); + + /* Do the "real open" */ + spin_lock_irq(&port->port_lock); + + /* allocate circular buffer on first open */ + if (port->port_write_buf.buf_buf == NULL) { + + spin_unlock_irq(&port->port_lock); + status = gs_buf_alloc(&port->port_write_buf, WRITE_BUF_SIZE); + spin_lock_irq(&port->port_lock); + + if (status) { + pr_debug("gs_open: ttyGS%d (%p,%p) no buffer\n", + port->port_num, tty, file); + port->openclose = false; + goto exit_unlock_port; + } + } + + /* REVISIT if REMOVED (ports[].port NULL), abort the open + * to let rmmod work faster (but this way isn't wrong). + */ + + /* REVISIT maybe wait for "carrier detect" */ + + tty->driver_data = port; + port->port_tty = tty; + + port->open_count = 1; + port->openclose = false; + + /* low_latency means ldiscs work in tasklet context, without + * needing a workqueue schedule ... easier to keep up. + */ + tty->low_latency = 1; + + /* if connected, start the I/O stream */ + if (port->port_usb) { + pr_debug("gs_open: start ttyGS%d\n", port->port_num); + gs_start_io(port); + + /* REVISIT for ACM, issue "network connected" event */ + } + + pr_debug("gs_open: ttyGS%d (%p,%p)\n", port->port_num, tty, file); + + status = 0; + +exit_unlock_port: + spin_unlock_irq(&port->port_lock); + return status; +} + +static int gs_writes_finished(struct gs_port *p) +{ + int cond; + + /* return true on disconnect or empty buffer */ + spin_lock_irq(&p->port_lock); + cond = (p->port_usb == NULL) || !gs_buf_data_avail(&p->port_write_buf); + spin_unlock_irq(&p->port_lock); + + return cond; +} + +static void gs_close(struct tty_struct *tty, struct file *file) +{ + struct gs_port *port = tty->driver_data; + + spin_lock_irq(&port->port_lock); + + if (port->open_count != 1) { + if (port->open_count == 0) + WARN_ON(1); + else + --port->open_count; + goto exit; + } + + pr_debug("gs_close: ttyGS%d (%p,%p) ...\n", port->port_num, tty, file); + + /* mark port as closing but in use; we can drop port lock + * and sleep if necessary + */ + port->openclose = true; + port->open_count = 0; + + if (port->port_usb) + /* REVISIT for ACM, issue "network disconnected" event */; + + /* wait for circular write buffer to drain, disconnect, or at + * most GS_CLOSE_TIMEOUT seconds; then discard the rest + */ + if (gs_buf_data_avail(&port->port_write_buf) > 0 + && port->port_usb) { + spin_unlock_irq(&port->port_lock); + wait_event_interruptible_timeout(port->drain_wait, + gs_writes_finished(port), + GS_CLOSE_TIMEOUT * HZ); + spin_lock_irq(&port->port_lock); + } + + /* Iff we're disconnected, there can be no I/O in flight so it's + * ok to free the circular buffer; else just scrub it. And don't + * let the push tasklet fire again until we're re-opened. + */ + if (port->port_usb == NULL) + gs_buf_free(&port->port_write_buf); + else + gs_buf_clear(&port->port_write_buf); + + tasklet_kill(&port->push); + + tty->driver_data = NULL; + port->port_tty = NULL; + + port->openclose = false; + + pr_debug("gs_close: ttyGS%d (%p,%p) done!\n", + port->port_num, tty, file); + + wake_up_interruptible(&port->close_wait); +exit: + spin_unlock_irq(&port->port_lock); +} + +static int gs_write(struct tty_struct *tty, const unsigned char *buf, int count) +{ + struct gs_port *port = tty->driver_data; + unsigned long flags; + int status; + + pr_vdebug("gs_write: ttyGS%d (%p) writing %d bytes\n", + port->port_num, tty, count); + + spin_lock_irqsave(&port->port_lock, flags); + if (count) + count = gs_buf_put(&port->port_write_buf, buf, count); + /* treat count == 0 as flush_chars() */ + if (port->port_usb) + status = gs_start_tx(port); + spin_unlock_irqrestore(&port->port_lock, flags); + + return count; +} + +static int gs_put_char(struct tty_struct *tty, unsigned char ch) +{ + struct gs_port *port = tty->driver_data; + unsigned long flags; + int status; + + pr_vdebug("gs_put_char: (%d,%p) char=0x%x, called from %p\n", + port->port_num, tty, ch, __builtin_return_address(0)); + + spin_lock_irqsave(&port->port_lock, flags); + status = gs_buf_put(&port->port_write_buf, &ch, 1); + spin_unlock_irqrestore(&port->port_lock, flags); + + return status; +} + +static void gs_flush_chars(struct tty_struct *tty) +{ + struct gs_port *port = tty->driver_data; + unsigned long flags; + + pr_vdebug("gs_flush_chars: (%d,%p)\n", port->port_num, tty); + + spin_lock_irqsave(&port->port_lock, flags); + if (port->port_usb) + gs_start_tx(port); + spin_unlock_irqrestore(&port->port_lock, flags); +} + +static int gs_write_room(struct tty_struct *tty) +{ + struct gs_port *port = tty->driver_data; + unsigned long flags; + int room = 0; + + spin_lock_irqsave(&port->port_lock, flags); + if (port->port_usb) + room = gs_buf_space_avail(&port->port_write_buf); + spin_unlock_irqrestore(&port->port_lock, flags); + + pr_vdebug("gs_write_room: (%d,%p) room=%d\n", + port->port_num, tty, room); + + return room; +} + +static int gs_chars_in_buffer(struct tty_struct *tty) +{ + struct gs_port *port = tty->driver_data; + unsigned long flags; + int chars = 0; + + spin_lock_irqsave(&port->port_lock, flags); + chars = gs_buf_data_avail(&port->port_write_buf); + spin_unlock_irqrestore(&port->port_lock, flags); + + pr_vdebug("gs_chars_in_buffer: (%d,%p) chars=%d\n", + port->port_num, tty, chars); + + return chars; +} + +/* undo side effects of setting TTY_THROTTLED */ +static void gs_unthrottle(struct tty_struct *tty) +{ + struct gs_port *port = tty->driver_data; + unsigned long flags; + unsigned started = 0; + + spin_lock_irqsave(&port->port_lock, flags); + if (port->port_usb) + started = gs_start_rx(port); + spin_unlock_irqrestore(&port->port_lock, flags); + + pr_vdebug("gs_unthrottle: ttyGS%d, %d packets\n", + port->port_num, started); +} + +static const struct tty_operations gs_tty_ops = { + .open = gs_open, + .close = gs_close, + .write = gs_write, + .put_char = gs_put_char, + .flush_chars = gs_flush_chars, + .write_room = gs_write_room, + .chars_in_buffer = gs_chars_in_buffer, + .unthrottle = gs_unthrottle, +}; + +/*-------------------------------------------------------------------------*/ + +static struct tty_driver *gs_tty_driver; + +static int __init +gs_port_alloc(unsigned port_num, struct usb_cdc_line_coding *coding) +{ + struct gs_port *port; + + port = kzalloc(sizeof(struct gs_port), GFP_KERNEL); + if (port == NULL) + return -ENOMEM; + + spin_lock_init(&port->port_lock); + init_waitqueue_head(&port->close_wait); + init_waitqueue_head(&port->drain_wait); + + tasklet_init(&port->push, gs_rx_push, (unsigned long) port); + + INIT_LIST_HEAD(&port->read_pool); + INIT_LIST_HEAD(&port->write_pool); + + port->port_num = port_num; + port->port_line_coding = *coding; + + ports[port_num].port = port; + + return 0; +} + +/** + * gserial_setup - initialize TTY driver for one or more ports + * @g: gadget to associate with these ports + * @count: how many ports to support + * Context: may sleep + * + * The TTY stack needs to know in advance how many devices it should + * plan to manage. Use this call to set up the ports you will be + * exporting through USB. Later, connect them to functions based + * on what configuration is activated by the USB host; and disconnect + * them as appropriate. + * + * An example would be a two-configuration device in which both + * configurations expose port 0, but through different functions. + * One configuration could even expose port 1 while the other + * one doesn't. + * + * Returns negative errno or zero. + */ +int __init gserial_setup(struct usb_gadget *g, unsigned count) +{ + unsigned i; + struct usb_cdc_line_coding coding; + int status; + + if (count == 0 || count > N_PORTS) + return -EINVAL; + + gs_tty_driver = alloc_tty_driver(count); + if (!gs_tty_driver) + return -ENOMEM; + + gs_tty_driver->owner = THIS_MODULE; + gs_tty_driver->driver_name = "g_serial"; + gs_tty_driver->name = "ttyGS"; + /* uses dynamically assigned dev_t values */ + + gs_tty_driver->type = TTY_DRIVER_TYPE_SERIAL; + gs_tty_driver->subtype = SERIAL_TYPE_NORMAL; + gs_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; + gs_tty_driver->init_termios = tty_std_termios; + + /* 9600-8-N-1 ... matches defaults expected by "usbser.sys" on + * MS-Windows. Otherwise, most of these flags shouldn't affect + * anything unless we were to actually hook up to a serial line. + */ + gs_tty_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + gs_tty_driver->init_termios.c_ispeed = 9600; + gs_tty_driver->init_termios.c_ospeed = 9600; + + coding.dwDTERate = __constant_cpu_to_le32(9600); + coding.bCharFormat = 8; + coding.bParityType = USB_CDC_NO_PARITY; + coding.bDataBits = USB_CDC_1_STOP_BITS; + + tty_set_operations(gs_tty_driver, &gs_tty_ops); + + /* make devices be openable */ + for (i = 0; i < count; i++) { + mutex_init(&ports[i].lock); + status = gs_port_alloc(i, &coding); + if (status) { + count = i; + goto fail; + } + } + n_ports = count; + + /* export the driver ... */ + status = tty_register_driver(gs_tty_driver); + if (status) { + put_tty_driver(gs_tty_driver); + pr_err("%s: cannot register, err %d\n", + __func__, status); + goto fail; + } + + /* ... and sysfs class devices, so mdev/udev make /dev/ttyGS* */ + for (i = 0; i < count; i++) { + struct device *tty_dev; + + tty_dev = tty_register_device(gs_tty_driver, i, &g->dev); + if (IS_ERR(tty_dev)) + pr_warning("%s: no classdev for port %d, err %ld\n", + __func__, i, PTR_ERR(tty_dev)); + } + + pr_debug("%s: registered %d ttyGS* device%s\n", __func__, + count, (count == 1) ? "" : "s"); + + return status; +fail: + while (count--) + kfree(ports[count].port); + put_tty_driver(gs_tty_driver); + gs_tty_driver = NULL; + return status; +} + +static int gs_closed(struct gs_port *port) +{ + int cond; + + spin_lock_irq(&port->port_lock); + cond = (port->open_count == 0) && !port->openclose; + spin_unlock_irq(&port->port_lock); + return cond; +} + +/** + * gserial_cleanup - remove TTY-over-USB driver and devices + * Context: may sleep + * + * This is called to free all resources allocated by @gserial_setup(). + * Accordingly, it may need to wait until some open /dev/ files have + * closed. + * + * The caller must have issued @gserial_disconnect() for any ports + * that had previously been connected, so that there is never any + * I/O pending when it's called. + */ +void gserial_cleanup(void) +{ + unsigned i; + struct gs_port *port; + + if (!gs_tty_driver) + return; + + /* start sysfs and /dev/ttyGS* node removal */ + for (i = 0; i < n_ports; i++) + tty_unregister_device(gs_tty_driver, i); + + for (i = 0; i < n_ports; i++) { + /* prevent new opens */ + mutex_lock(&ports[i].lock); + port = ports[i].port; + ports[i].port = NULL; + mutex_unlock(&ports[i].lock); + + /* wait for old opens to finish */ + wait_event(port->close_wait, gs_closed(port)); + + WARN_ON(port->port_usb != NULL); + + kfree(port); + } + n_ports = 0; + + tty_unregister_driver(gs_tty_driver); + gs_tty_driver = NULL; + + pr_debug("%s: cleaned up ttyGS* support\n", __func__); +} + +/** + * gserial_connect - notify TTY I/O glue that USB link is active + * @gser: the function, set up with endpoints and descriptors + * @port_num: which port is active + * Context: any (usually from irq) + * + * This is called activate endpoints and let the TTY layer know that + * the connection is active ... not unlike "carrier detect". It won't + * necessarily start I/O queues; unless the TTY is held open by any + * task, there would be no point. However, the endpoints will be + * activated so the USB host can perform I/O, subject to basic USB + * hardware flow control. + * + * Caller needs to have set up the endpoints and USB function in @dev + * before calling this, as well as the appropriate (speed-specific) + * endpoint descriptors, and also have set up the TTY driver by calling + * @gserial_setup(). + * + * Returns negative errno or zero. + * On success, ep->driver_data will be overwritten. + */ +int gserial_connect(struct gserial *gser, u8 port_num) +{ + struct gs_port *port; + unsigned long flags; + int status; + + if (!gs_tty_driver || port_num >= n_ports) + return -ENXIO; + + /* we "know" gserial_cleanup() hasn't been called */ + port = ports[port_num].port; + + /* activate the endpoints */ + status = usb_ep_enable(gser->in, gser->in_desc); + if (status < 0) + return status; + gser->in->driver_data = port; + + status = usb_ep_enable(gser->out, gser->out_desc); + if (status < 0) + goto fail_out; + gser->out->driver_data = port; + + /* then tell the tty glue that I/O can work */ + spin_lock_irqsave(&port->port_lock, flags); + gser->ioport = port; + port->port_usb = gser; + + /* REVISIT unclear how best to handle this state... + * we don't really couple it with the Linux TTY. + */ + gser->port_line_coding = port->port_line_coding; + + /* REVISIT if waiting on "carrier detect", signal. */ + + /* REVISIT for ACM, issue "network connection" status notification: + * connected if open_count, else disconnected. + */ + + /* if it's already open, start I/O */ + if (port->open_count) { + pr_debug("gserial_connect: start ttyGS%d\n", port->port_num); + gs_start_io(port); + } + + spin_unlock_irqrestore(&port->port_lock, flags); + + return status; + +fail_out: + usb_ep_disable(gser->in); + gser->in->driver_data = NULL; + return status; +} + +/** + * gserial_disconnect - notify TTY I/O glue that USB link is inactive + * @gser: the function, on which gserial_connect() was called + * Context: any (usually from irq) + * + * This is called to deactivate endpoints and let the TTY layer know + * that the connection went inactive ... not unlike "hangup". + * + * On return, the state is as if gserial_connect() had never been called; + * there is no active USB I/O on these endpoints. + */ +void gserial_disconnect(struct gserial *gser) +{ + struct gs_port *port = gser->ioport; + unsigned long flags; + + if (!port) + return; + + /* tell the TTY glue not to do I/O here any more */ + spin_lock_irqsave(&port->port_lock, flags); + + /* REVISIT as above: how best to track this? */ + port->port_line_coding = gser->port_line_coding; + + port->port_usb = NULL; + gser->ioport = NULL; + if (port->open_count > 0 || port->openclose) { + wake_up_interruptible(&port->drain_wait); + if (port->port_tty) + tty_hangup(port->port_tty); + } + spin_unlock_irqrestore(&port->port_lock, flags); + + /* disable endpoints, aborting down any active I/O */ + usb_ep_disable(gser->out); + gser->out->driver_data = NULL; + + usb_ep_disable(gser->in); + gser->in->driver_data = NULL; + + /* finally, free any unused/unusable I/O buffers */ + spin_lock_irqsave(&port->port_lock, flags); + if (port->open_count == 0 && !port->openclose) + gs_buf_free(&port->port_write_buf); + gs_free_requests(gser->out, &port->read_pool); + gs_free_requests(gser->in, &port->write_pool); + spin_unlock_irqrestore(&port->port_lock, flags); +} diff --git a/drivers/usb/gadget/u_serial.h b/drivers/usb/gadget/u_serial.h new file mode 100644 index 00000000000..7b561138f90 --- /dev/null +++ b/drivers/usb/gadget/u_serial.h @@ -0,0 +1,58 @@ +/* + * u_serial.h - interface to USB gadget "serial port"/TTY utilities + * + * Copyright (C) 2008 David Brownell + * Copyright (C) 2008 by Nokia Corporation + * + * This software is distributed under the terms of the GNU General + * Public License ("GPL") as published by the Free Software Foundation, + * either version 2 of that License or (at your option) any later version. + */ + +#ifndef __U_SERIAL_H +#define __U_SERIAL_H + +#include <linux/usb/composite.h> +#include <linux/usb/cdc.h> + +/* + * One non-multiplexed "serial" I/O port ... there can be several of these + * on any given USB peripheral device, if it provides enough endpoints. + * + * The "u_serial" utility component exists to do one thing: manage TTY + * style I/O using the USB peripheral endpoints listed here, including + * hookups to sysfs and /dev for each logical "tty" device. + * + * REVISIT need TTY --> USB event flow too, so ACM can report open/close + * as carrier detect events. Model after ECM. There's more ACM state too. + * + * REVISIT someday, allow multiplexing several TTYs over these endpoints. + */ +struct gserial { + struct usb_function func; + + /* port is managed by gserial_{connect,disconnect} */ + struct gs_port *ioport; + + struct usb_ep *in; + struct usb_ep *out; + struct usb_endpoint_descriptor *in_desc; + struct usb_endpoint_descriptor *out_desc; + + /* REVISIT avoid this CDC-ACM support harder ... */ + struct usb_cdc_line_coding port_line_coding; /* 9600-8-N-1 etc */ +}; + +/* port setup/teardown is handled by gadget driver */ +int gserial_setup(struct usb_gadget *g, unsigned n_ports); +void gserial_cleanup(void); + +/* connect/disconnect is handled by individual functions */ +int gserial_connect(struct gserial *, u8 port_num); +void gserial_disconnect(struct gserial *); + +/* functions are bound to configurations by a config or gadget driver */ +int acm_bind_config(struct usb_configuration *c, u8 port_num); +int gser_bind_config(struct usb_configuration *c, u8 port_num); + +#endif /* __U_SERIAL_H */ diff --git a/drivers/usb/gadget/zero.c b/drivers/usb/gadget/zero.c index fce4924dbbe..aa0bd4f126a 100644 --- a/drivers/usb/gadget/zero.c +++ b/drivers/usb/gadget/zero.c @@ -1,8 +1,8 @@ /* * zero.c -- Gadget Zero, for USB development * - * Copyright (C) 2003-2007 David Brownell - * All rights reserved. + * Copyright (C) 2003-2008 David Brownell + * Copyright (C) 2008 by Nokia Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -30,12 +30,7 @@ * * It supports two similar configurations. One sinks whatever the usb host * writes, and in return sources zeroes. The other loops whatever the host - * writes back, so the host can read it. Module options include: - * - * buflen=N default N=4096, buffer size used - * qlen=N default N=32, how many buffers in the loopback queue - * loopdefault default false, list loopback config first - * autoresume=N default N=0, seconds before triggering remote wakeup + * writes back, so the host can read it. * * Many drivers will only have one configuration, letting them be much * simpler if they also don't support high speed operation (like this @@ -47,94 +42,35 @@ * work with low capability USB controllers without four bulk endpoints. */ +/* + * driver assumes self-powered hardware, and + * has no way for users to trigger remote wakeup. + */ + /* #define VERBOSE_DEBUG */ #include <linux/kernel.h> #include <linux/utsname.h> #include <linux/device.h> -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> - +#include "g_zero.h" #include "gadget_chips.h" /*-------------------------------------------------------------------------*/ -#define DRIVER_VERSION "Earth Day 2008" +#define DRIVER_VERSION "Cinco de Mayo 2008" -static const char shortname[] = "zero"; static const char longname[] = "Gadget Zero"; -static const char source_sink[] = "source and sink data"; -static const char loopback[] = "loop input to output"; - -/*-------------------------------------------------------------------------*/ - -/* - * driver assumes self-powered hardware, and - * has no way for users to trigger remote wakeup. - * - * this version autoconfigures as much as possible, - * which is reasonable for most "bulk-only" drivers. - */ -static const char *EP_IN_NAME; /* source */ -static const char *EP_OUT_NAME; /* sink */ - -/*-------------------------------------------------------------------------*/ - -/* big enough to hold our biggest descriptor */ -#define USB_BUFSIZ 256 - -struct zero_dev { - spinlock_t lock; - struct usb_gadget *gadget; - struct usb_request *req; /* for control responses */ - - /* when configured, we have one of two configs: - * - source data (in to host) and sink it (out from host) - * - or loop it back (out from host back in to host) - */ - u8 config; - struct usb_ep *in_ep, *out_ep; - - /* autoresume timer */ - struct timer_list resume; -}; - -#define DBG(d, fmt, args...) \ - dev_dbg(&(d)->gadget->dev , fmt , ## args) -#define VDBG(d, fmt, args...) \ - dev_vdbg(&(d)->gadget->dev , fmt , ## args) -#define ERROR(d, fmt, args...) \ - dev_err(&(d)->gadget->dev , fmt , ## args) -#define WARN(d, fmt, args...) \ - dev_warn(&(d)->gadget->dev , fmt , ## args) -#define INFO(d, fmt, args...) \ - dev_info(&(d)->gadget->dev , fmt , ## args) - -/*-------------------------------------------------------------------------*/ - -static unsigned buflen = 4096; -static unsigned qlen = 32; -static unsigned pattern = 0; - -module_param(buflen, uint, S_IRUGO); -module_param(qlen, uint, S_IRUGO); -module_param(pattern, uint, S_IRUGO|S_IWUSR); - -/* - * if it's nonzero, autoresume says how many seconds to wait - * before trying to wake up the host after suspend. - */ -static unsigned autoresume = 0; -module_param(autoresume, uint, 0); +unsigned buflen = 4096; +module_param(buflen, uint, 0); /* * Normally the "loopback" configuration is second (index 1) so * it's not the default. Here's where to change that order, to - * work better with hosts where config changes are problematic. - * Or controllers (like superh) that only support one config. + * work better with hosts where config changes are problematic or + * controllers (like original superh) that only support one config. */ static int loopdefault = 0; module_param(loopdefault, bool, S_IRUGO|S_IWUSR); @@ -156,24 +92,6 @@ module_param(loopdefault, bool, S_IRUGO|S_IWUSR); /*-------------------------------------------------------------------------*/ -/* - * DESCRIPTORS ... most are static, but strings and (full) - * configuration descriptors are built on demand. - */ - -#define STRING_MANUFACTURER 25 -#define STRING_PRODUCT 42 -#define STRING_SERIAL 101 -#define STRING_SOURCE_SINK 250 -#define STRING_LOOPBACK 251 - -/* - * This device advertises two configurations; these numbers work - * on a pxa250 as well as more flexible hardware. - */ -#define CONFIG_SOURCE_SINK 3 -#define CONFIG_LOOPBACK 2 - static struct usb_device_descriptor device_desc = { .bLength = sizeof device_desc, .bDescriptorType = USB_DT_DEVICE, @@ -183,248 +101,64 @@ static struct usb_device_descriptor device_desc = { .idVendor = __constant_cpu_to_le16(DRIVER_VENDOR_NUM), .idProduct = __constant_cpu_to_le16(DRIVER_PRODUCT_NUM), - .iManufacturer = STRING_MANUFACTURER, - .iProduct = STRING_PRODUCT, - .iSerialNumber = STRING_SERIAL, .bNumConfigurations = 2, }; -static struct usb_config_descriptor source_sink_config = { - .bLength = sizeof source_sink_config, - .bDescriptorType = USB_DT_CONFIG, - - /* compute wTotalLength on the fly */ - .bNumInterfaces = 1, - .bConfigurationValue = CONFIG_SOURCE_SINK, - .iConfiguration = STRING_SOURCE_SINK, - .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = 1, /* self-powered */ -}; - -static struct usb_config_descriptor loopback_config = { - .bLength = sizeof loopback_config, - .bDescriptorType = USB_DT_CONFIG, - - /* compute wTotalLength on the fly */ - .bNumInterfaces = 1, - .bConfigurationValue = CONFIG_LOOPBACK, - .iConfiguration = STRING_LOOPBACK, - .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = 1, /* self-powered */ -}; - +#ifdef CONFIG_USB_OTG static struct usb_otg_descriptor otg_descriptor = { .bLength = sizeof otg_descriptor, .bDescriptorType = USB_DT_OTG, - .bmAttributes = USB_OTG_SRP, -}; - -/* one interface in each configuration */ - -static const struct usb_interface_descriptor source_sink_intf = { - .bLength = sizeof source_sink_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bNumEndpoints = 2, - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - .iInterface = STRING_SOURCE_SINK, -}; - -static const struct usb_interface_descriptor loopback_intf = { - .bLength = sizeof loopback_intf, - .bDescriptorType = USB_DT_INTERFACE, - - .bNumEndpoints = 2, - .bInterfaceClass = USB_CLASS_VENDOR_SPEC, - .iInterface = STRING_LOOPBACK, -}; - -/* two full speed bulk endpoints; their use is config-dependent */ - -static struct usb_endpoint_descriptor fs_source_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_IN, - .bmAttributes = USB_ENDPOINT_XFER_BULK, -}; - -static struct usb_endpoint_descriptor fs_sink_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bEndpointAddress = USB_DIR_OUT, - .bmAttributes = USB_ENDPOINT_XFER_BULK, -}; - -static const struct usb_descriptor_header *fs_source_sink_function[] = { - (struct usb_descriptor_header *) &otg_descriptor, - (struct usb_descriptor_header *) &source_sink_intf, - (struct usb_descriptor_header *) &fs_sink_desc, - (struct usb_descriptor_header *) &fs_source_desc, - NULL, -}; - -static const struct usb_descriptor_header *fs_loopback_function[] = { - (struct usb_descriptor_header *) &otg_descriptor, - (struct usb_descriptor_header *) &loopback_intf, - (struct usb_descriptor_header *) &fs_sink_desc, - (struct usb_descriptor_header *) &fs_source_desc, - NULL, -}; - -/* - * usb 2.0 devices need to expose both high speed and full speed - * descriptors, unless they only run at full speed. - * - * that means alternate endpoint descriptors (bigger packets) - * and a "device qualifier" ... plus more construction options - * for the config descriptor. - */ - -static struct usb_endpoint_descriptor hs_source_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = __constant_cpu_to_le16(512), -}; - -static struct usb_endpoint_descriptor hs_sink_desc = { - .bLength = USB_DT_ENDPOINT_SIZE, - .bDescriptorType = USB_DT_ENDPOINT, - - .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = __constant_cpu_to_le16(512), -}; - -static struct usb_qualifier_descriptor dev_qualifier = { - .bLength = sizeof dev_qualifier, - .bDescriptorType = USB_DT_DEVICE_QUALIFIER, - - .bcdUSB = __constant_cpu_to_le16(0x0200), - .bDeviceClass = USB_CLASS_VENDOR_SPEC, - - .bNumConfigurations = 2, + /* REVISIT SRP-only hardware is possible, although + * it would not be called "OTG" ... + */ + .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, }; -static const struct usb_descriptor_header *hs_source_sink_function[] = { +const struct usb_descriptor_header *otg_desc[] = { (struct usb_descriptor_header *) &otg_descriptor, - (struct usb_descriptor_header *) &source_sink_intf, - (struct usb_descriptor_header *) &hs_source_desc, - (struct usb_descriptor_header *) &hs_sink_desc, NULL, }; +#endif -static const struct usb_descriptor_header *hs_loopback_function[] = { - (struct usb_descriptor_header *) &otg_descriptor, - (struct usb_descriptor_header *) &loopback_intf, - (struct usb_descriptor_header *) &hs_source_desc, - (struct usb_descriptor_header *) &hs_sink_desc, - NULL, -}; +/* string IDs are assigned dynamically */ -/* maxpacket and other transfer characteristics vary by speed. */ -static inline struct usb_endpoint_descriptor * -ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs, - struct usb_endpoint_descriptor *fs) -{ - if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) - return hs; - return fs; -} +#define STRING_MANUFACTURER_IDX 0 +#define STRING_PRODUCT_IDX 1 +#define STRING_SERIAL_IDX 2 static char manufacturer[50]; /* default serial number takes at least two packets */ static char serial[] = "0123456789.0123456789.0123456789"; - -/* static strings, in UTF-8 */ -static struct usb_string strings[] = { - { STRING_MANUFACTURER, manufacturer, }, - { STRING_PRODUCT, longname, }, - { STRING_SERIAL, serial, }, - { STRING_LOOPBACK, loopback, }, - { STRING_SOURCE_SINK, source_sink, }, +static struct usb_string strings_dev[] = { + [STRING_MANUFACTURER_IDX].s = manufacturer, + [STRING_PRODUCT_IDX].s = longname, + [STRING_SERIAL_IDX].s = serial, { } /* end of list */ }; -static struct usb_gadget_strings stringtab = { +static struct usb_gadget_strings stringtab_dev = { .language = 0x0409, /* en-us */ - .strings = strings, + .strings = strings_dev, }; -/* - * config descriptors are also handcrafted. these must agree with code - * that sets configurations, and with code managing interfaces and their - * altsettings. other complexity may come from: - * - * - high speed support, including "other speed config" rules - * - multiple configurations - * - interfaces with alternate settings - * - embedded class or vendor-specific descriptors - * - * this handles high speed, and has a second config that could as easily - * have been an alternate interface setting (on most hardware). - * - * NOTE: to demonstrate (and test) more USB capabilities, this driver - * should include an altsetting to test interrupt transfers, including - * high bandwidth modes at high speed. (Maybe work like Intel's test - * device?) - */ -static int config_buf(struct usb_gadget *gadget, - u8 *buf, u8 type, unsigned index) -{ - int is_source_sink; - int len; - const struct usb_descriptor_header **function; - int hs = 0; - - /* two configurations will always be index 0 and index 1 */ - if (index > 1) - return -EINVAL; - is_source_sink = loopdefault ? (index == 1) : (index == 0); - - if (gadget_is_dualspeed(gadget)) { - hs = (gadget->speed == USB_SPEED_HIGH); - if (type == USB_DT_OTHER_SPEED_CONFIG) - hs = !hs; - } - if (hs) - function = is_source_sink - ? hs_source_sink_function - : hs_loopback_function; - else - function = is_source_sink - ? fs_source_sink_function - : fs_loopback_function; - - /* for now, don't advertise srp-only devices */ - if (!gadget_is_otg(gadget)) - function++; - - len = usb_gadget_config_buf(is_source_sink - ? &source_sink_config - : &loopback_config, - buf, USB_BUFSIZ, function); - if (len < 0) - return len; - ((struct usb_config_descriptor *) buf)->bDescriptorType = type; - return len; -} +static struct usb_gadget_strings *dev_strings[] = { + &stringtab_dev, + NULL, +}; /*-------------------------------------------------------------------------*/ -static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length) +struct usb_request *alloc_ep_req(struct usb_ep *ep) { struct usb_request *req; req = usb_ep_alloc_request(ep, GFP_ATOMIC); if (req) { - req->length = length; - req->buf = kmalloc(length, GFP_ATOMIC); + req->length = buflen; + req->buf = kmalloc(buflen, GFP_ATOMIC); if (!req->buf) { usb_ep_free_request(ep, req); req = NULL; @@ -433,681 +167,73 @@ static struct usb_request *alloc_ep_req(struct usb_ep *ep, unsigned length) return req; } -static void free_ep_req(struct usb_ep *ep, struct usb_request *req) +void free_ep_req(struct usb_ep *ep, struct usb_request *req) { kfree(req->buf); usb_ep_free_request(ep, req); } -/*-------------------------------------------------------------------------*/ - -/* - * SOURCE/SINK FUNCTION ... a primary testing vehicle for USB peripherals, - * this just sinks bulk packets OUT to the peripheral and sources them IN - * to the host, optionally with specific data patterns. - * - * In terms of control messaging, this supports all the standard requests - * plus two that support control-OUT tests. - * - * Note that because this doesn't queue more than one request at a time, - * some other function must be used to test queueing logic. The network - * link (g_ether) is probably the best option for that. - */ - -/* optionally require specific source/sink data patterns */ - -static int -check_read_data( - struct zero_dev *dev, - struct usb_ep *ep, - struct usb_request *req -) +static void disable_ep(struct usb_composite_dev *cdev, struct usb_ep *ep) { - unsigned i; - u8 *buf = req->buf; - - for (i = 0; i < req->actual; i++, buf++) { - switch (pattern) { - /* all-zeroes has no synchronization issues */ - case 0: - if (*buf == 0) - continue; - break; - /* mod63 stays in sync with short-terminated transfers, - * or otherwise when host and gadget agree on how large - * each usb transfer request should be. resync is done - * with set_interface or set_config. - */ - case 1: - if (*buf == (u8)(i % 63)) - continue; - break; - } - ERROR(dev, "bad OUT byte, buf[%d] = %d\n", i, *buf); - usb_ep_set_halt(ep); - return -EINVAL; + int value; + + if (ep->driver_data) { + value = usb_ep_disable(ep); + if (value < 0) + DBG(cdev, "disable %s --> %d\n", + ep->name, value); + ep->driver_data = NULL; } - return 0; } -static void reinit_write_data(struct usb_ep *ep, struct usb_request *req) +void disable_endpoints(struct usb_composite_dev *cdev, + struct usb_ep *in, struct usb_ep *out) { - unsigned i; - u8 *buf = req->buf; - - switch (pattern) { - case 0: - memset(req->buf, 0, req->length); - break; - case 1: - for (i = 0; i < req->length; i++) - *buf++ = (u8) (i % 63); - break; - } -} - -/* if there is only one request in the queue, there'll always be an - * irq delay between end of one request and start of the next. - * that prevents using hardware dma queues. - */ -static void source_sink_complete(struct usb_ep *ep, struct usb_request *req) -{ - struct zero_dev *dev = ep->driver_data; - int status = req->status; - - switch (status) { - - case 0: /* normal completion? */ - if (ep == dev->out_ep) { - check_read_data(dev, ep, req); - memset(req->buf, 0x55, req->length); - } else - reinit_write_data(ep, req); - break; - - /* this endpoint is normally active while we're configured */ - case -ECONNABORTED: /* hardware forced ep reset */ - case -ECONNRESET: /* request dequeued */ - case -ESHUTDOWN: /* disconnect from host */ - VDBG(dev, "%s gone (%d), %d/%d\n", ep->name, status, - req->actual, req->length); - if (ep == dev->out_ep) - check_read_data(dev, ep, req); - free_ep_req(ep, req); - return; - - case -EOVERFLOW: /* buffer overrun on read means that - * we didn't provide a big enough - * buffer. - */ - default: -#if 1 - DBG(dev, "%s complete --> %d, %d/%d\n", ep->name, - status, req->actual, req->length); -#endif - case -EREMOTEIO: /* short read */ - break; - } - - status = usb_ep_queue(ep, req, GFP_ATOMIC); - if (status) { - ERROR(dev, "kill %s: resubmit %d bytes --> %d\n", - ep->name, req->length, status); - usb_ep_set_halt(ep); - /* FIXME recover later ... somehow */ - } -} - -static struct usb_request *source_sink_start_ep(struct usb_ep *ep) -{ - struct usb_request *req; - int status; - - req = alloc_ep_req(ep, buflen); - if (!req) - return NULL; - - memset(req->buf, 0, req->length); - req->complete = source_sink_complete; - - if (strcmp(ep->name, EP_IN_NAME) == 0) - reinit_write_data(ep, req); - else - memset(req->buf, 0x55, req->length); - - status = usb_ep_queue(ep, req, GFP_ATOMIC); - if (status) { - struct zero_dev *dev = ep->driver_data; - - ERROR(dev, "start %s --> %d\n", ep->name, status); - free_ep_req(ep, req); - req = NULL; - } - - return req; -} - -static int set_source_sink_config(struct zero_dev *dev) -{ - int result = 0; - struct usb_ep *ep; - struct usb_gadget *gadget = dev->gadget; - - gadget_for_each_ep(ep, gadget) { - const struct usb_endpoint_descriptor *d; - - /* one endpoint writes (sources) zeroes in (to the host) */ - if (strcmp(ep->name, EP_IN_NAME) == 0) { - d = ep_desc(gadget, &hs_source_desc, &fs_source_desc); - result = usb_ep_enable(ep, d); - if (result == 0) { - ep->driver_data = dev; - if (source_sink_start_ep(ep) != NULL) { - dev->in_ep = ep; - continue; - } - usb_ep_disable(ep); - result = -EIO; - } - - /* one endpoint reads (sinks) anything out (from the host) */ - } else if (strcmp(ep->name, EP_OUT_NAME) == 0) { - d = ep_desc(gadget, &hs_sink_desc, &fs_sink_desc); - result = usb_ep_enable(ep, d); - if (result == 0) { - ep->driver_data = dev; - if (source_sink_start_ep(ep) != NULL) { - dev->out_ep = ep; - continue; - } - usb_ep_disable(ep); - result = -EIO; - } - - /* ignore any other endpoints */ - } else - continue; - - /* stop on error */ - ERROR(dev, "can't start %s, result %d\n", ep->name, result); - break; - } - if (result == 0) - DBG(dev, "buflen %d\n", buflen); - - /* caller is responsible for cleanup on error */ - return result; -} - -/*-------------------------------------------------------------------------*/ - -static void loopback_complete(struct usb_ep *ep, struct usb_request *req) -{ - struct zero_dev *dev = ep->driver_data; - int status = req->status; - - switch (status) { - - case 0: /* normal completion? */ - if (ep == dev->out_ep) { - /* loop this OUT packet back IN to the host */ - req->zero = (req->actual < req->length); - req->length = req->actual; - status = usb_ep_queue(dev->in_ep, req, GFP_ATOMIC); - if (status == 0) - return; - - /* "should never get here" */ - ERROR(dev, "can't loop %s to %s: %d\n", - ep->name, dev->in_ep->name, - status); - } - - /* queue the buffer for some later OUT packet */ - req->length = buflen; - status = usb_ep_queue(dev->out_ep, req, GFP_ATOMIC); - if (status == 0) - return; - - /* "should never get here" */ - /* FALLTHROUGH */ - - default: - ERROR(dev, "%s loop complete --> %d, %d/%d\n", ep->name, - status, req->actual, req->length); - /* FALLTHROUGH */ - - /* NOTE: since this driver doesn't maintain an explicit record - * of requests it submitted (just maintains qlen count), we - * rely on the hardware driver to clean up on disconnect or - * endpoint disable. - */ - case -ECONNABORTED: /* hardware forced ep reset */ - case -ECONNRESET: /* request dequeued */ - case -ESHUTDOWN: /* disconnect from host */ - free_ep_req(ep, req); - return; - } -} - -static int set_loopback_config(struct zero_dev *dev) -{ - int result = 0; - struct usb_ep *ep; - struct usb_gadget *gadget = dev->gadget; - - gadget_for_each_ep(ep, gadget) { - const struct usb_endpoint_descriptor *d; - - /* one endpoint writes data back IN to the host */ - if (strcmp(ep->name, EP_IN_NAME) == 0) { - d = ep_desc(gadget, &hs_source_desc, &fs_source_desc); - result = usb_ep_enable(ep, d); - if (result == 0) { - ep->driver_data = dev; - dev->in_ep = ep; - continue; - } - - /* one endpoint just reads OUT packets */ - } else if (strcmp(ep->name, EP_OUT_NAME) == 0) { - d = ep_desc(gadget, &hs_sink_desc, &fs_sink_desc); - result = usb_ep_enable(ep, d); - if (result == 0) { - ep->driver_data = dev; - dev->out_ep = ep; - continue; - } - - /* ignore any other endpoints */ - } else - continue; - - /* stop on error */ - ERROR(dev, "can't enable %s, result %d\n", ep->name, result); - break; - } - - /* allocate a bunch of read buffers and queue them all at once. - * we buffer at most 'qlen' transfers; fewer if any need more - * than 'buflen' bytes each. - */ - if (result == 0) { - struct usb_request *req; - unsigned i; - - ep = dev->out_ep; - for (i = 0; i < qlen && result == 0; i++) { - req = alloc_ep_req(ep, buflen); - if (req) { - req->complete = loopback_complete; - result = usb_ep_queue(ep, req, GFP_ATOMIC); - if (result) - DBG(dev, "%s queue req --> %d\n", - ep->name, result); - } else - result = -ENOMEM; - } - } - if (result == 0) - DBG(dev, "qlen %d, buflen %d\n", qlen, buflen); - - /* caller is responsible for cleanup on error */ - return result; -} - -/*-------------------------------------------------------------------------*/ - -static void zero_reset_config(struct zero_dev *dev) -{ - if (dev->config == 0) - return; - - DBG(dev, "reset config\n"); - - /* just disable endpoints, forcing completion of pending i/o. - * all our completion handlers free their requests in this case. - */ - if (dev->in_ep) { - usb_ep_disable(dev->in_ep); - dev->in_ep = NULL; - } - if (dev->out_ep) { - usb_ep_disable(dev->out_ep); - dev->out_ep = NULL; - } - dev->config = 0; - del_timer(&dev->resume); -} - -/* change our operational config. this code must agree with the code - * that returns config descriptors, and altsetting code. - * - * it's also responsible for power management interactions. some - * configurations might not work with our current power sources. - * - * note that some device controller hardware will constrain what this - * code can do, perhaps by disallowing more than one configuration or - * by limiting configuration choices (like the pxa2xx). - */ -static int zero_set_config(struct zero_dev *dev, unsigned number) -{ - int result = 0; - struct usb_gadget *gadget = dev->gadget; - - if (number == dev->config) - return 0; - - if (gadget_is_sa1100(gadget) && dev->config) { - /* tx fifo is full, but we can't clear it...*/ - ERROR(dev, "can't change configurations\n"); - return -ESPIPE; - } - zero_reset_config(dev); - - switch (number) { - case CONFIG_SOURCE_SINK: - result = set_source_sink_config(dev); - break; - case CONFIG_LOOPBACK: - result = set_loopback_config(dev); - break; - default: - result = -EINVAL; - /* FALL THROUGH */ - case 0: - return result; - } - - if (!result && (!dev->in_ep || !dev->out_ep)) - result = -ENODEV; - if (result) - zero_reset_config(dev); - else { - char *speed; - - switch (gadget->speed) { - case USB_SPEED_LOW: speed = "low"; break; - case USB_SPEED_FULL: speed = "full"; break; - case USB_SPEED_HIGH: speed = "high"; break; - default: speed = "?"; break; - } - - dev->config = number; - INFO(dev, "%s speed config #%d: %s\n", speed, number, - (number == CONFIG_SOURCE_SINK) - ? source_sink : loopback); - } - return result; -} - -/*-------------------------------------------------------------------------*/ - -static void zero_setup_complete(struct usb_ep *ep, struct usb_request *req) -{ - if (req->status || req->actual != req->length) - DBG((struct zero_dev *) ep->driver_data, - "setup complete --> %d, %d/%d\n", - req->status, req->actual, req->length); -} - -/* - * The setup() callback implements all the ep0 functionality that's - * not handled lower down, in hardware or the hardware driver (like - * device and endpoint feature flags, and their status). It's all - * housekeeping for the gadget function we're implementing. Most of - * the work is in config-specific setup. - */ -static int -zero_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) -{ - struct zero_dev *dev = get_gadget_data(gadget); - struct usb_request *req = dev->req; - int value = -EOPNOTSUPP; - u16 w_index = le16_to_cpu(ctrl->wIndex); - u16 w_value = le16_to_cpu(ctrl->wValue); - u16 w_length = le16_to_cpu(ctrl->wLength); - - /* usually this stores reply data in the pre-allocated ep0 buffer, - * but config change events will reconfigure hardware. - */ - req->zero = 0; - switch (ctrl->bRequest) { - - case USB_REQ_GET_DESCRIPTOR: - if (ctrl->bRequestType != USB_DIR_IN) - goto unknown; - switch (w_value >> 8) { - - case USB_DT_DEVICE: - value = min(w_length, (u16) sizeof device_desc); - memcpy(req->buf, &device_desc, value); - break; - case USB_DT_DEVICE_QUALIFIER: - if (!gadget_is_dualspeed(gadget)) - break; - value = min(w_length, (u16) sizeof dev_qualifier); - memcpy(req->buf, &dev_qualifier, value); - break; - - case USB_DT_OTHER_SPEED_CONFIG: - if (!gadget_is_dualspeed(gadget)) - break; - // FALLTHROUGH - case USB_DT_CONFIG: - value = config_buf(gadget, req->buf, - w_value >> 8, - w_value & 0xff); - if (value >= 0) - value = min(w_length, (u16) value); - break; - - case USB_DT_STRING: - /* wIndex == language code. - * this driver only handles one language, you can - * add string tables for other languages, using - * any UTF-8 characters - */ - value = usb_gadget_get_string(&stringtab, - w_value & 0xff, req->buf); - if (value >= 0) - value = min(w_length, (u16) value); - break; - } - break; - - /* currently two configs, two speeds */ - case USB_REQ_SET_CONFIGURATION: - if (ctrl->bRequestType != 0) - goto unknown; - if (gadget->a_hnp_support) - DBG(dev, "HNP available\n"); - else if (gadget->a_alt_hnp_support) - DBG(dev, "HNP needs a different root port\n"); - else - VDBG(dev, "HNP inactive\n"); - spin_lock(&dev->lock); - value = zero_set_config(dev, w_value); - spin_unlock(&dev->lock); - break; - case USB_REQ_GET_CONFIGURATION: - if (ctrl->bRequestType != USB_DIR_IN) - goto unknown; - *(u8 *)req->buf = dev->config; - value = min(w_length, (u16) 1); - break; - - /* until we add altsetting support, or other interfaces, - * only 0/0 are possible. pxa2xx only supports 0/0 (poorly) - * and already killed pending endpoint I/O. - */ - case USB_REQ_SET_INTERFACE: - if (ctrl->bRequestType != USB_RECIP_INTERFACE) - goto unknown; - spin_lock(&dev->lock); - if (dev->config && w_index == 0 && w_value == 0) { - u8 config = dev->config; - - /* resets interface configuration, forgets about - * previous transaction state (queued bufs, etc) - * and re-inits endpoint state (toggle etc) - * no response queued, just zero status == success. - * if we had more than one interface we couldn't - * use this "reset the config" shortcut. - */ - zero_reset_config(dev); - zero_set_config(dev, config); - value = 0; - } - spin_unlock(&dev->lock); - break; - case USB_REQ_GET_INTERFACE: - if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE)) - goto unknown; - if (!dev->config) - break; - if (w_index != 0) { - value = -EDOM; - break; - } - *(u8 *)req->buf = 0; - value = min(w_length, (u16) 1); - break; - - /* - * These are the same vendor-specific requests supported by - * Intel's USB 2.0 compliance test devices. We exceed that - * device spec by allowing multiple-packet requests. - */ - case 0x5b: /* control WRITE test -- fill the buffer */ - if (ctrl->bRequestType != (USB_DIR_OUT|USB_TYPE_VENDOR)) - goto unknown; - if (w_value || w_index) - break; - /* just read that many bytes into the buffer */ - if (w_length > USB_BUFSIZ) - break; - value = w_length; - break; - case 0x5c: /* control READ test -- return the buffer */ - if (ctrl->bRequestType != (USB_DIR_IN|USB_TYPE_VENDOR)) - goto unknown; - if (w_value || w_index) - break; - /* expect those bytes are still in the buffer; send back */ - if (w_length > USB_BUFSIZ - || w_length != req->length) - break; - value = w_length; - break; - - default: -unknown: - VDBG(dev, - "unknown control req%02x.%02x v%04x i%04x l%d\n", - ctrl->bRequestType, ctrl->bRequest, - w_value, w_index, w_length); - } - - /* respond with data transfer before status phase? */ - if (value >= 0) { - req->length = value; - req->zero = value < w_length; - value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC); - if (value < 0) { - DBG(dev, "ep_queue --> %d\n", value); - req->status = 0; - zero_setup_complete(gadget->ep0, req); - } - } - - /* device either stalls (value < 0) or reports success */ - return value; -} - -static void zero_disconnect(struct usb_gadget *gadget) -{ - struct zero_dev *dev = get_gadget_data(gadget); - unsigned long flags; - - spin_lock_irqsave(&dev->lock, flags); - zero_reset_config(dev); - - /* a more significant application might have some non-usb - * activities to quiesce here, saving resources like power - * or pushing the notification up a network stack. - */ - spin_unlock_irqrestore(&dev->lock, flags); - - /* next we may get setup() calls to enumerate new connections; - * or an unbind() during shutdown (including removing module). - */ -} - -static void zero_autoresume(unsigned long _dev) -{ - struct zero_dev *dev = (struct zero_dev *) _dev; - int status; - - /* normally the host would be woken up for something - * more significant than just a timer firing... - */ - if (dev->gadget->speed != USB_SPEED_UNKNOWN) { - status = usb_gadget_wakeup(dev->gadget); - DBG(dev, "wakeup --> %d\n", status); - } + disable_ep(cdev, in); + disable_ep(cdev, out); } /*-------------------------------------------------------------------------*/ -static void zero_unbind(struct usb_gadget *gadget) +static int __init zero_bind(struct usb_composite_dev *cdev) { - struct zero_dev *dev = get_gadget_data(gadget); - - DBG(dev, "unbind\n"); - - /* we've already been disconnected ... no i/o is active */ - if (dev->req) { - dev->req->length = USB_BUFSIZ; - free_ep_req(gadget->ep0, dev->req); - } - del_timer_sync(&dev->resume); - kfree(dev); - set_gadget_data(gadget, NULL); -} - -static int __init zero_bind(struct usb_gadget *gadget) -{ - struct zero_dev *dev; - struct usb_ep *ep; int gcnum; + struct usb_gadget *gadget = cdev->gadget; + int id; - /* FIXME this can't yet work right with SH ... it has only - * one configuration, numbered one. + /* Allocate string descriptor numbers ... note that string + * contents can be overridden by the composite_dev glue. */ - if (gadget_is_sh(gadget)) - return -ENODEV; - - /* Bulk-only drivers like this one SHOULD be able to - * autoconfigure on any sane usb controller driver, - * but there may also be important quirks to address. + id = usb_string_id(cdev); + if (id < 0) + return id; + strings_dev[STRING_MANUFACTURER_IDX].id = id; + device_desc.iManufacturer = id; + + id = usb_string_id(cdev); + if (id < 0) + return id; + strings_dev[STRING_PRODUCT_IDX].id = id; + device_desc.iProduct = id; + + id = usb_string_id(cdev); + if (id < 0) + return id; + strings_dev[STRING_SERIAL_IDX].id = id; + device_desc.iSerialNumber = id; + + /* Register primary, then secondary configuration. Note that + * SH3 only allows one config... */ - usb_ep_autoconfig_reset(gadget); - ep = usb_ep_autoconfig(gadget, &fs_source_desc); - if (!ep) { -autoconf_fail: - pr_err("%s: can't autoconfigure on %s\n", - shortname, gadget->name); - return -ENODEV; + if (loopdefault) { + loopback_add(cdev); + if (!gadget_is_sh(gadget)) + sourcesink_add(cdev); + } else { + sourcesink_add(cdev); + if (!gadget_is_sh(gadget)) + loopback_add(cdev); } - EP_IN_NAME = ep->name; - ep->driver_data = ep; /* claim */ - - ep = usb_ep_autoconfig(gadget, &fs_sink_desc); - if (!ep) - goto autoconf_fail; - EP_OUT_NAME = ep->name; - ep->driver_data = ep; /* claim */ gcnum = usb_gadget_controller_number(gadget); if (gcnum >= 0) @@ -1115,144 +241,44 @@ autoconf_fail: else { /* gadget zero is so simple (for now, no altsettings) that * it SHOULD NOT have problems with bulk-capable hardware. - * so warn about unrcognized controllers, don't panic. + * so just warn about unrcognized controllers -- don't panic. * * things like configuration and altsetting numbering * can need hardware-specific attention though. */ pr_warning("%s: controller '%s' not recognized\n", - shortname, gadget->name); + longname, gadget->name); device_desc.bcdDevice = __constant_cpu_to_le16(0x9999); } - /* ok, we made sense of the hardware ... */ - dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (!dev) - return -ENOMEM; - spin_lock_init(&dev->lock); - dev->gadget = gadget; - set_gadget_data(gadget, dev); - - init_timer(&dev->resume); - dev->resume.function = zero_autoresume; - dev->resume.data = (unsigned long) dev; - - /* preallocate control response and buffer */ - dev->req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL); - if (!dev->req) - goto enomem; - dev->req->buf = kmalloc(USB_BUFSIZ, GFP_KERNEL); - if (!dev->req->buf) - goto enomem; - - dev->req->complete = zero_setup_complete; - - device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; - - if (gadget_is_dualspeed(gadget)) { - /* assume ep0 uses the same value for both speeds ... */ - dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0; - - /* and that all endpoints are dual-speed */ - hs_source_desc.bEndpointAddress = - fs_source_desc.bEndpointAddress; - hs_sink_desc.bEndpointAddress = - fs_sink_desc.bEndpointAddress; - } - - if (gadget_is_otg(gadget)) { - otg_descriptor.bmAttributes |= USB_OTG_HNP, - source_sink_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - loopback_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - } - - usb_gadget_set_selfpowered(gadget); - - if (autoresume) { - source_sink_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - loopback_config.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - } - - gadget->ep0->driver_data = dev; - - INFO(dev, "%s, version: " DRIVER_VERSION "\n", longname); - INFO(dev, "using %s, OUT %s IN %s\n", gadget->name, - EP_OUT_NAME, EP_IN_NAME); + INFO(cdev, "%s, version: " DRIVER_VERSION "\n", longname); snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", init_utsname()->sysname, init_utsname()->release, gadget->name); return 0; - -enomem: - zero_unbind(gadget); - return -ENOMEM; } -/*-------------------------------------------------------------------------*/ - -static void zero_suspend(struct usb_gadget *gadget) -{ - struct zero_dev *dev = get_gadget_data(gadget); - - if (gadget->speed == USB_SPEED_UNKNOWN) - return; - - if (autoresume) { - mod_timer(&dev->resume, jiffies + (HZ * autoresume)); - DBG(dev, "suspend, wakeup in %d seconds\n", autoresume); - } else - DBG(dev, "suspend\n"); -} - -static void zero_resume(struct usb_gadget *gadget) -{ - struct zero_dev *dev = get_gadget_data(gadget); - - DBG(dev, "resume\n"); - del_timer(&dev->resume); -} - - -/*-------------------------------------------------------------------------*/ - -static struct usb_gadget_driver zero_driver = { -#ifdef CONFIG_USB_GADGET_DUALSPEED - .speed = USB_SPEED_HIGH, -#else - .speed = USB_SPEED_FULL, -#endif - .function = (char *) longname, +static struct usb_composite_driver zero_driver = { + .name = "zero", + .dev = &device_desc, + .strings = dev_strings, .bind = zero_bind, - .unbind = __exit_p(zero_unbind), - - .setup = zero_setup, - .disconnect = zero_disconnect, - - .suspend = zero_suspend, - .resume = zero_resume, - - .driver = { - .name = (char *) shortname, - .owner = THIS_MODULE, - }, }; MODULE_AUTHOR("David Brownell"); MODULE_LICENSE("GPL"); - static int __init init(void) { - return usb_gadget_register_driver(&zero_driver); + return usb_composite_register(&zero_driver); } module_init(init); static void __exit cleanup(void) { - usb_gadget_unregister_driver(&zero_driver); + usb_composite_unregister(&zero_driver); } module_exit(cleanup); - diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c index 08a4335401a..bf69f473910 100644 --- a/drivers/usb/host/ehci-au1xxx.c +++ b/drivers/usb/host/ehci-au1xxx.c @@ -19,263 +19,304 @@ #define USB_MCFG_RDCOMB (1<<30) #define USB_MCFG_SSDEN (1<<23) #define USB_MCFG_PHYPLLEN (1<<19) +#define USB_MCFG_UCECLKEN (1<<18) #define USB_MCFG_EHCCLKEN (1<<17) +#ifdef CONFIG_DMA_COHERENT #define USB_MCFG_UCAM (1<<7) +#else +#define USB_MCFG_UCAM (0) +#endif #define USB_MCFG_EBMEN (1<<3) #define USB_MCFG_EMEMEN (1<<2) -#define USBH_ENABLE_CE (USB_MCFG_PHYPLLEN | USB_MCFG_EHCCLKEN) +#define USBH_ENABLE_CE (USB_MCFG_PHYPLLEN | USB_MCFG_EHCCLKEN) +#define USBH_ENABLE_INIT (USB_MCFG_PFEN | USB_MCFG_RDCOMB | \ + USBH_ENABLE_CE | USB_MCFG_SSDEN | \ + USB_MCFG_UCAM | USB_MCFG_EBMEN | \ + USB_MCFG_EMEMEN) -#ifdef CONFIG_DMA_COHERENT -#define USBH_ENABLE_INIT (USBH_ENABLE_CE \ - | USB_MCFG_PFEN | USB_MCFG_RDCOMB \ - | USB_MCFG_SSDEN | USB_MCFG_UCAM \ - | USB_MCFG_EBMEN | USB_MCFG_EMEMEN) -#else -#define USBH_ENABLE_INIT (USBH_ENABLE_CE \ - | USB_MCFG_PFEN | USB_MCFG_RDCOMB \ - | USB_MCFG_SSDEN \ - | USB_MCFG_EBMEN | USB_MCFG_EMEMEN) -#endif #define USBH_DISABLE (USB_MCFG_EBMEN | USB_MCFG_EMEMEN) extern int usb_disabled(void); -/*-------------------------------------------------------------------------*/ - -static void au1xxx_start_ehc(struct platform_device *dev) +static void au1xxx_start_ehc(void) { - pr_debug(__FILE__ ": starting Au1xxx EHCI USB Controller\n"); - - /* write HW defaults again in case Yamon cleared them */ - if (au_readl(USB_HOST_CONFIG) == 0) { - au_writel(0x00d02000, USB_HOST_CONFIG); - au_readl(USB_HOST_CONFIG); - udelay(1000); - } - /* enable host controller */ - au_writel(USBH_ENABLE_CE | au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG); - au_readl(USB_HOST_CONFIG); - udelay(1000); - au_writel(USBH_ENABLE_INIT | au_readl(USB_HOST_CONFIG), - USB_HOST_CONFIG); - au_readl(USB_HOST_CONFIG); + /* enable clock to EHCI block and HS PHY PLL*/ + au_writel(au_readl(USB_HOST_CONFIG) | USBH_ENABLE_CE, USB_HOST_CONFIG); + au_sync(); udelay(1000); - pr_debug(__FILE__ ": Clock to USB host has been enabled\n"); + /* enable EHCI mmio */ + au_writel(au_readl(USB_HOST_CONFIG) | USBH_ENABLE_INIT, USB_HOST_CONFIG); + au_sync(); + udelay(1000); } -static void au1xxx_stop_ehc(struct platform_device *dev) +static void au1xxx_stop_ehc(void) { - pr_debug(__FILE__ ": stopping Au1xxx EHCI USB Controller\n"); + unsigned long c; /* Disable mem */ - au_writel(~USBH_DISABLE & au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG); + au_writel(au_readl(USB_HOST_CONFIG) & ~USBH_DISABLE, USB_HOST_CONFIG); + au_sync(); udelay(1000); - /* Disable clock */ - au_writel(~USB_MCFG_EHCCLKEN & au_readl(USB_HOST_CONFIG), - USB_HOST_CONFIG); - au_readl(USB_HOST_CONFIG); + + /* Disable EHC clock. If the HS PHY is unused disable it too. */ + c = au_readl(USB_HOST_CONFIG) & ~USB_MCFG_EHCCLKEN; + if (!(c & USB_MCFG_UCECLKEN)) /* UDC disabled? */ + c &= ~USB_MCFG_PHYPLLEN; /* yes: disable HS PHY PLL */ + au_writel(c, USB_HOST_CONFIG); + au_sync(); } -/*-------------------------------------------------------------------------*/ +static const struct hc_driver ehci_au1xxx_hc_driver = { + .description = hcd_name, + .product_desc = "Au1xxx EHCI", + .hcd_priv_size = sizeof(struct ehci_hcd), + + /* + * generic hardware linkage + */ + .irq = ehci_irq, + .flags = HCD_MEMORY | HCD_USB2, + + /* + * basic lifecycle operations + * + * FIXME -- ehci_init() doesn't do enough here. + * See ehci-ppc-soc for a complete implementation. + */ + .reset = ehci_init, + .start = ehci_run, + .stop = ehci_stop, + .shutdown = ehci_shutdown, -/* configure so an HC device and id are always provided */ -/* always called with process context; sleeping is OK */ + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = ehci_urb_enqueue, + .urb_dequeue = ehci_urb_dequeue, + .endpoint_disable = ehci_endpoint_disable, -/** - * usb_ehci_au1xxx_probe - initialize Au1xxx-based HCDs - * Context: !in_interrupt() - * - * Allocates basic resources for this USB host controller, and - * then invokes the start() method for the HCD associated with it - * through the hotplug entry's driver_data. - * - */ -int usb_ehci_au1xxx_probe(const struct hc_driver *driver, - struct usb_hcd **hcd_out, struct platform_device *dev) + /* + * scheduling support + */ + .get_frame_number = ehci_get_frame, + + /* + * root hub support + */ + .hub_status_data = ehci_hub_status_data, + .hub_control = ehci_hub_control, + .bus_suspend = ehci_bus_suspend, + .bus_resume = ehci_bus_resume, + .relinquish_port = ehci_relinquish_port, + .port_handed_over = ehci_port_handed_over, +}; + +static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev) { - int retval; struct usb_hcd *hcd; struct ehci_hcd *ehci; + int ret; -#if defined(CONFIG_SOC_AU1200) && defined(CONFIG_DMA_COHERENT) + if (usb_disabled()) + return -ENODEV; +#if defined(CONFIG_SOC_AU1200) && defined(CONFIG_DMA_COHERENT) /* Au1200 AB USB does not support coherent memory */ if (!(read_c0_prid() & 0xff)) { - pr_info("%s: this is chip revision AB!\n", dev->name); - pr_info("%s: update your board or re-configure the kernel\n", - dev->name); + printk(KERN_INFO "%s: this is chip revision AB!\n", pdev->name); + printk(KERN_INFO "%s: update your board or re-configure" + " the kernel\n", pdev->name); return -ENODEV; } #endif - au1xxx_start_ehc(dev); - - if (dev->resource[1].flags != IORESOURCE_IRQ) { + if (pdev->resource[1].flags != IORESOURCE_IRQ) { pr_debug("resource[1] is not IORESOURCE_IRQ"); - retval = -ENOMEM; + return -ENOMEM; } - hcd = usb_create_hcd(driver, &dev->dev, "Au1xxx"); + hcd = usb_create_hcd(&ehci_au1xxx_hc_driver, &pdev->dev, "Au1xxx"); if (!hcd) return -ENOMEM; - hcd->rsrc_start = dev->resource[0].start; - hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1; + + hcd->rsrc_start = pdev->resource[0].start; + hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1; if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { pr_debug("request_mem_region failed"); - retval = -EBUSY; + ret = -EBUSY; goto err1; } hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); if (!hcd->regs) { pr_debug("ioremap failed"); - retval = -ENOMEM; + ret = -ENOMEM; goto err2; } + au1xxx_start_ehc(); + ehci = hcd_to_ehci(hcd); ehci->caps = hcd->regs; ehci->regs = hcd->regs + HC_LENGTH(readl(&ehci->caps->hc_capbase)); /* cache this readonly data; minimize chip reads */ ehci->hcs_params = readl(&ehci->caps->hcs_params); - /* ehci_hcd_init(hcd_to_ehci(hcd)); */ - - retval = - usb_add_hcd(hcd, dev->resource[1].start, IRQF_DISABLED | IRQF_SHARED); - if (retval == 0) - return retval; + ret = usb_add_hcd(hcd, pdev->resource[1].start, + IRQF_DISABLED | IRQF_SHARED); + if (ret == 0) { + platform_set_drvdata(pdev, hcd); + return ret; + } - au1xxx_stop_ehc(dev); + au1xxx_stop_ehc(); iounmap(hcd->regs); err2: release_mem_region(hcd->rsrc_start, hcd->rsrc_len); err1: usb_put_hcd(hcd); - return retval; + return ret; } -/* may be called without controller electrically present */ -/* may be called with controller, bus, and devices active */ - -/** - * usb_ehci_hcd_au1xxx_remove - shutdown processing for Au1xxx-based HCDs - * @dev: USB Host Controller being removed - * Context: !in_interrupt() - * - * Reverses the effect of usb_ehci_hcd_au1xxx_probe(), first invoking - * the HCD's stop() method. It is always called from a thread - * context, normally "rmmod", "apmd", or something similar. - * - */ -void usb_ehci_au1xxx_remove(struct usb_hcd *hcd, struct platform_device *dev) +static int ehci_hcd_au1xxx_drv_remove(struct platform_device *pdev) { + struct usb_hcd *hcd = platform_get_drvdata(pdev); + usb_remove_hcd(hcd); iounmap(hcd->regs); release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); - au1xxx_stop_ehc(dev); + au1xxx_stop_ehc(); + platform_set_drvdata(pdev, NULL); + + return 0; } -/*-------------------------------------------------------------------------*/ +#ifdef CONFIG_PM +static int ehci_hcd_au1xxx_drv_suspend(struct platform_device *pdev, + pm_message_t message) +{ + struct usb_hcd *hcd = platform_get_drvdata(pdev); + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + unsigned long flags; + int rc; -static const struct hc_driver ehci_au1xxx_hc_driver = { - .description = hcd_name, - .product_desc = "Au1xxx EHCI", - .hcd_priv_size = sizeof(struct ehci_hcd), + return 0; + rc = 0; - /* - * generic hardware linkage - */ - .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, + if (time_before(jiffies, ehci->next_statechange)) + msleep(10); - /* - * basic lifecycle operations + /* Root hub was already suspended. Disable irq emission and + * mark HW unaccessible, bail out if RH has been resumed. Use + * the spinlock to properly synchronize with possible pending + * RH suspend or resume activity. * - * FIXME -- ehci_init() doesn't do enough here. - * See ehci-ppc-soc for a complete implementation. - */ - .reset = ehci_init, - .start = ehci_run, - .stop = ehci_stop, - .shutdown = ehci_shutdown, - - /* - * managing i/o requests and associated device resources + * This is still racy as hcd->state is manipulated outside of + * any locks =P But that will be a different fix. */ - .urb_enqueue = ehci_urb_enqueue, - .urb_dequeue = ehci_urb_dequeue, - .endpoint_disable = ehci_endpoint_disable, + spin_lock_irqsave(&ehci->lock, flags); + if (hcd->state != HC_STATE_SUSPENDED) { + rc = -EINVAL; + goto bail; + } + ehci_writel(ehci, 0, &ehci->regs->intr_enable); + (void)ehci_readl(ehci, &ehci->regs->intr_enable); - /* - * scheduling support - */ - .get_frame_number = ehci_get_frame, + /* make sure snapshot being resumed re-enumerates everything */ + if (message.event == PM_EVENT_PRETHAW) { + ehci_halt(ehci); + ehci_reset(ehci); + } - /* - * root hub support - */ - .hub_status_data = ehci_hub_status_data, - .hub_control = ehci_hub_control, - .bus_suspend = ehci_bus_suspend, - .bus_resume = ehci_bus_resume, - .relinquish_port = ehci_relinquish_port, - .port_handed_over = ehci_port_handed_over, -}; + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); -/*-------------------------------------------------------------------------*/ + au1xxx_stop_ehc(); -static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev) -{ - struct usb_hcd *hcd = NULL; - int ret; +bail: + spin_unlock_irqrestore(&ehci->lock, flags); - pr_debug("In ehci_hcd_au1xxx_drv_probe\n"); + // could save FLADJ in case of Vaux power loss + // ... we'd only use it to handle clock skew - if (usb_disabled()) - return -ENODEV; - - /* FIXME we only want one one probe() not two */ - ret = usb_ehci_au1xxx_probe(&ehci_au1xxx_hc_driver, &hcd, pdev); - return ret; + return rc; } -static int ehci_hcd_au1xxx_drv_remove(struct platform_device *pdev) + +static int ehci_hcd_au1xxx_drv_resume(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); + struct ehci_hcd *ehci = hcd_to_ehci(hcd); - /* FIXME we only want one one remove() not two */ - usb_ehci_au1xxx_remove(hcd, pdev); - return 0; -} + au1xxx_start_ehc(); - /*TBD*/ -/*static int ehci_hcd_au1xxx_drv_suspend(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct usb_hcd *hcd = dev_get_drvdata(dev); + // maybe restore FLADJ - return 0; -} -static int ehci_hcd_au1xxx_drv_resume(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct usb_hcd *hcd = dev_get_drvdata(dev); + if (time_before(jiffies, ehci->next_statechange)) + msleep(100); + + /* Mark hardware accessible again as we are out of D3 state by now */ + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + + /* If CF is still set, we maintained PCI Vaux power. + * Just undo the effect of ehci_pci_suspend(). + */ + if (ehci_readl(ehci, &ehci->regs->configured_flag) == FLAG_CF) { + int mask = INTR_MASK; + + if (!hcd->self.root_hub->do_remote_wakeup) + mask &= ~STS_PCD; + ehci_writel(ehci, mask, &ehci->regs->intr_enable); + ehci_readl(ehci, &ehci->regs->intr_enable); + return 0; + } + + ehci_dbg(ehci, "lost power, restarting\n"); + usb_root_hub_lost_power(hcd->self.root_hub); + + /* Else reset, to cope with power loss or flush-to-storage + * style "resume" having let BIOS kick in during reboot. + */ + (void) ehci_halt(ehci); + (void) ehci_reset(ehci); + + /* emptying the schedule aborts any urbs */ + spin_lock_irq(&ehci->lock); + if (ehci->reclaim) + end_unlink_async(ehci); + ehci_work(ehci); + spin_unlock_irq(&ehci->lock); + + ehci_writel(ehci, ehci->command, &ehci->regs->command); + ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); + ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ + + /* here we "know" root ports should always stay powered */ + ehci_port_power(ehci, 1); + + hcd->state = HC_STATE_SUSPENDED; return 0; } -*/ -MODULE_ALIAS("platform:au1xxx-ehci"); + +#else +#define ehci_hcd_au1xxx_drv_suspend NULL +#define ehci_hcd_au1xxx_drv_resume NULL +#endif + static struct platform_driver ehci_hcd_au1xxx_driver = { - .probe = ehci_hcd_au1xxx_drv_probe, - .remove = ehci_hcd_au1xxx_drv_remove, - .shutdown = usb_hcd_platform_shutdown, - /*.suspend = ehci_hcd_au1xxx_drv_suspend, */ - /*.resume = ehci_hcd_au1xxx_drv_resume, */ + .probe = ehci_hcd_au1xxx_drv_probe, + .remove = ehci_hcd_au1xxx_drv_remove, + .shutdown = usb_hcd_platform_shutdown, + .suspend = ehci_hcd_au1xxx_drv_suspend, + .resume = ehci_hcd_au1xxx_drv_resume, .driver = { - .name = "au1xxx-ehci", + .name = "au1xxx-ehci", + .owner = THIS_MODULE, } }; + +MODULE_ALIAS("platform:au1xxx-ehci"); diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c index 0f82fdcaef0..b0f8ed5a7fb 100644 --- a/drivers/usb/host/ehci-dbg.c +++ b/drivers/usb/host/ehci-dbg.c @@ -676,7 +676,7 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf) "%s\n" "SUSPENDED (no register access)\n", hcd->self.controller->bus->name, - hcd->self.controller->bus_id, + dev_name(hcd->self.controller), hcd->product_desc); goto done; } @@ -688,7 +688,7 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf) "%s\n" "EHCI %x.%02x, hcd state %d\n", hcd->self.controller->bus->name, - hcd->self.controller->bus_id, + dev_name(hcd->self.controller), hcd->product_desc, i >> 8, i & 0x0ff, hcd->state); size -= temp; diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 7370d6187c6..01c3da34f67 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -56,7 +56,7 @@ int usb_hcd_fsl_probe(const struct hc_driver *driver, pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data; if (!pdata) { dev_err(&pdev->dev, - "No platform data for %s.\n", pdev->dev.bus_id); + "No platform data for %s.\n", dev_name(&pdev->dev)); return -ENODEV; } @@ -69,7 +69,7 @@ int usb_hcd_fsl_probe(const struct hc_driver *driver, (pdata->operating_mode == FSL_USB2_DR_OTG))) { dev_err(&pdev->dev, "Non Host Mode configured for %s. Wrong driver linked.\n", - pdev->dev.bus_id); + dev_name(&pdev->dev)); return -ENODEV; } @@ -77,12 +77,12 @@ int usb_hcd_fsl_probe(const struct hc_driver *driver, if (!res) { dev_err(&pdev->dev, "Found HC with no IRQ. Check %s setup!\n", - pdev->dev.bus_id); + dev_name(&pdev->dev)); return -ENODEV; } irq = res->start; - hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id); + hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { retval = -ENOMEM; goto err1; @@ -92,7 +92,7 @@ int usb_hcd_fsl_probe(const struct hc_driver *driver, if (!res) { dev_err(&pdev->dev, "Found HC with no register addr. Check %s setup!\n", - pdev->dev.bus_id); + dev_name(&pdev->dev)); retval = -ENODEV; goto err2; } @@ -132,7 +132,7 @@ int usb_hcd_fsl_probe(const struct hc_driver *driver, err2: usb_put_hcd(hcd); err1: - dev_err(&pdev->dev, "init %s fail, %d\n", pdev->dev.bus_id, retval); + dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval); return retval; } @@ -230,8 +230,13 @@ static void mpc83xx_usb_setup(struct usb_hcd *hcd) /* put controller in host mode. */ ehci_writel(ehci, 0x00000003, non_ehci + FSL_SOC_USB_USBMODE); +#ifdef CONFIG_PPC_85xx + out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008); + out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080); +#else out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c); out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040); +#endif out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001); } diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 369a8a5ea7b..d9d53f289ca 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -84,7 +84,7 @@ static const char hcd_name [] = "ehci_hcd"; #define EHCI_IAA_MSECS 10 /* arbitrary */ #define EHCI_IO_JIFFIES (HZ/10) /* io watchdog > irq_thresh */ #define EHCI_ASYNC_JIFFIES (HZ/20) /* async idle timeout */ -#define EHCI_SHRINK_JIFFIES (HZ/200) /* async qh unlink delay */ +#define EHCI_SHRINK_FRAMES 5 /* async qh unlink delay */ /* Initial IRQ latency: faster than hw default */ static int log2_irq_thresh = 0; // 0 to 6 diff --git a/drivers/usb/host/ehci-ixp4xx.c b/drivers/usb/host/ehci-ixp4xx.c index 9d042f22009..f9575c40912 100644 --- a/drivers/usb/host/ehci-ixp4xx.c +++ b/drivers/usb/host/ehci-ixp4xx.c @@ -77,12 +77,12 @@ static int ixp4xx_ehci_probe(struct platform_device *pdev) if (!res) { dev_err(&pdev->dev, "Found HC with no IRQ. Check %s setup!\n", - pdev->dev.bus_id); + dev_name(&pdev->dev)); return -ENODEV; } irq = res->start; - hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id); + hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { retval = -ENOMEM; goto fail_create_hcd; @@ -92,7 +92,7 @@ static int ixp4xx_ehci_probe(struct platform_device *pdev) if (!res) { dev_err(&pdev->dev, "Found HC with no register addr. Check %s setup!\n", - pdev->dev.bus_id); + dev_name(&pdev->dev)); retval = -ENODEV; goto fail_request_resource; } @@ -126,7 +126,7 @@ fail_ioremap: fail_request_resource: usb_put_hcd(hcd); fail_create_hcd: - dev_err(&pdev->dev, "init %s fail, %d\n", pdev->dev.bus_id, retval); + dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval); return retval; } diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index ab625f0ba1d..5fbdc14e63b 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -204,7 +204,7 @@ static int __init ehci_orion_drv_probe(struct platform_device *pdev) if (irq <= 0) { dev_err(&pdev->dev, "Found HC with no IRQ. Check %s setup!\n", - pdev->dev.bus_id); + dev_name(&pdev->dev)); err = -ENODEV; goto err1; } @@ -213,7 +213,7 @@ static int __init ehci_orion_drv_probe(struct platform_device *pdev) if (!res) { dev_err(&pdev->dev, "Found HC with no register addr. Check %s setup!\n", - pdev->dev.bus_id); + dev_name(&pdev->dev)); err = -ENODEV; goto err1; } @@ -233,7 +233,7 @@ static int __init ehci_orion_drv_probe(struct platform_device *pdev) } hcd = usb_create_hcd(&ehci_orion_hc_driver, - &pdev->dev, pdev->dev.bus_id); + &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { err = -ENOMEM; goto err3; @@ -276,7 +276,7 @@ err2: release_mem_region(res->start, res->end - res->start + 1); err1: dev_err(&pdev->dev, "init %s fail, %d\n", - pdev->dev.bus_id, err); + dev_name(&pdev->dev), err); return err; } diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c index 37e6abeb794..0eba894bcb0 100644 --- a/drivers/usb/host/ehci-ps3.c +++ b/drivers/usb/host/ehci-ps3.c @@ -128,7 +128,7 @@ static int ps3_ehci_probe(struct ps3_system_bus_device *dev) dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */ - hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev->core.bus_id); + hcd = usb_create_hcd(&ps3_ehci_hc_driver, &dev->core, dev_name(&dev->core)); if (!hcd) { dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index b85b54160cd..2622b6596d7 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -1116,8 +1116,7 @@ static void scan_async (struct ehci_hcd *ehci) struct ehci_qh *qh; enum ehci_timer_action action = TIMER_IO_WATCHDOG; - if (!++(ehci->stamp)) - ehci->stamp++; + ehci->stamp = ehci_readl(ehci, &ehci->regs->frame_index); timer_action_done (ehci, TIMER_ASYNC_SHRINK); rescan: qh = ehci->async->qh_next.qh; @@ -1142,18 +1141,20 @@ rescan: } } - /* unlink idle entries, reducing HC PCI usage as well + /* unlink idle entries, reducing DMA usage as well * as HCD schedule-scanning costs. delay for any qh * we just scanned, there's a not-unusual case that it * doesn't stay idle for long. * (plus, avoids some kind of re-activation race.) */ - if (list_empty (&qh->qtd_list)) { - if (qh->stamp == ehci->stamp) + if (list_empty(&qh->qtd_list) + && qh->qh_state == QH_STATE_LINKED) { + if (!ehci->reclaim + && ((ehci->stamp - qh->stamp) & 0x1fff) + >= (EHCI_SHRINK_FRAMES * 8)) + start_unlink_async(ehci, qh); + else action = TIMER_ASYNC_SHRINK; - else if (!ehci->reclaim - && qh->qh_state == QH_STATE_LINKED) - start_unlink_async (ehci, qh); } qh = qh->qh_next.qh; diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 90245fd8bac..5799298364f 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -198,7 +198,10 @@ timer_action (struct ehci_hcd *ehci, enum ehci_timer_action action) break; // case TIMER_ASYNC_SHRINK: default: - t = EHCI_SHRINK_JIFFIES; + /* add a jiffie since we synch against the + * 8 KHz uframe counter. + */ + t = DIV_ROUND_UP(EHCI_SHRINK_FRAMES * HZ, 1000) + 1; break; } mod_timer(&ehci->watchdog, t + jiffies); diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c index 20b9a0d0742..31178e10cbb 100644 --- a/drivers/usb/host/isp116x-hcd.c +++ b/drivers/usb/host/isp116x-hcd.c @@ -94,6 +94,10 @@ static void write_ptddata_to_fifo(struct isp116x *isp116x, void *buf, int len) u16 w; int quot = len % 4; + /* buffer is already in 'usb data order', which is LE. */ + /* When reading buffer as u16, we have to take care byte order */ + /* doesn't get mixed up */ + if ((unsigned long)dp2 & 1) { /* not aligned */ for (; len > 1; len -= 2) { @@ -105,8 +109,11 @@ static void write_ptddata_to_fifo(struct isp116x *isp116x, void *buf, int len) isp116x_write_data16(isp116x, (u16) * dp); } else { /* aligned */ - for (; len > 1; len -= 2) - isp116x_raw_write_data16(isp116x, *dp2++); + for (; len > 1; len -= 2) { + /* Keep byte order ! */ + isp116x_raw_write_data16(isp116x, cpu_to_le16(*dp2++)); + } + if (len) isp116x_write_data16(isp116x, 0xff & *((u8 *) dp2)); } @@ -124,6 +131,10 @@ static void read_ptddata_from_fifo(struct isp116x *isp116x, void *buf, int len) u16 w; int quot = len % 4; + /* buffer is already in 'usb data order', which is LE. */ + /* When reading buffer as u16, we have to take care byte order */ + /* doesn't get mixed up */ + if ((unsigned long)dp2 & 1) { /* not aligned */ for (; len > 1; len -= 2) { @@ -131,12 +142,16 @@ static void read_ptddata_from_fifo(struct isp116x *isp116x, void *buf, int len) *dp++ = w & 0xff; *dp++ = (w >> 8) & 0xff; } + if (len) *dp = 0xff & isp116x_read_data16(isp116x); } else { /* aligned */ - for (; len > 1; len -= 2) - *dp2++ = isp116x_raw_read_data16(isp116x); + for (; len > 1; len -= 2) { + /* Keep byte order! */ + *dp2++ = le16_to_cpu(isp116x_raw_read_data16(isp116x)); + } + if (len) *(u8 *) dp2 = 0xff & isp116x_read_data16(isp116x); } @@ -1592,7 +1607,7 @@ static int __devinit isp116x_probe(struct platform_device *pdev) } /* allocate and initialize hcd */ - hcd = usb_create_hcd(&isp116x_hc_driver, &pdev->dev, pdev->dev.bus_id); + hcd = usb_create_hcd(&isp116x_hc_driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { ret = -ENOMEM; goto err5; diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c index 65aa5ecf569..c858f2adb92 100644 --- a/drivers/usb/host/isp1760-hcd.c +++ b/drivers/usb/host/isp1760-hcd.c @@ -38,6 +38,7 @@ struct isp1760_hcd { unsigned i_thresh; unsigned long reset_done; unsigned long next_statechange; + unsigned int devflags; }; static inline struct isp1760_hcd *hcd_to_priv(struct usb_hcd *hcd) @@ -378,9 +379,31 @@ static int isp1760_hc_setup(struct usb_hcd *hcd) { struct isp1760_hcd *priv = hcd_to_priv(hcd); int result; - u32 scratch; + u32 scratch, hwmode; + + /* Setup HW Mode Control: This assumes a level active-low interrupt */ + hwmode = HW_DATA_BUS_32BIT; + + if (priv->devflags & ISP1760_FLAG_BUS_WIDTH_16) + hwmode &= ~HW_DATA_BUS_32BIT; + if (priv->devflags & ISP1760_FLAG_ANALOG_OC) + hwmode |= HW_ANA_DIGI_OC; + if (priv->devflags & ISP1760_FLAG_DACK_POL_HIGH) + hwmode |= HW_DACK_POL_HIGH; + if (priv->devflags & ISP1760_FLAG_DREQ_POL_HIGH) + hwmode |= HW_DREQ_POL_HIGH; + + /* + * We have to set this first in case we're in 16-bit mode. + * Write it twice to ensure correct upper bits if switching + * to 16-bit mode. + */ + isp1760_writel(hwmode, hcd->regs + HC_HW_MODE_CTRL); + isp1760_writel(hwmode, hcd->regs + HC_HW_MODE_CTRL); isp1760_writel(0xdeadbabe, hcd->regs + HC_SCRATCH_REG); + /* Change bus pattern */ + scratch = isp1760_readl(hcd->regs + HC_CHIP_ID_REG); scratch = isp1760_readl(hcd->regs + HC_SCRATCH_REG); if (scratch != 0xdeadbabe) { printk(KERN_ERR "ISP1760: Scratch test failed.\n"); @@ -403,17 +426,29 @@ static int isp1760_hc_setup(struct usb_hcd *hcd) /* Step 11 passed */ - isp1760_writel(INTERRUPT_ENABLE_MASK, hcd->regs + HC_INTERRUPT_REG); - isp1760_writel(INTERRUPT_ENABLE_MASK, hcd->regs + HC_INTERRUPT_ENABLE); + isp1760_info(priv, "bus width: %d, oc: %s\n", + (priv->devflags & ISP1760_FLAG_BUS_WIDTH_16) ? + 16 : 32, (priv->devflags & ISP1760_FLAG_ANALOG_OC) ? + "analog" : "digital"); /* ATL reset */ - scratch = isp1760_readl(hcd->regs + HC_HW_MODE_CTRL); - isp1760_writel(scratch | ALL_ATX_RESET, hcd->regs + HC_HW_MODE_CTRL); + isp1760_writel(hwmode | ALL_ATX_RESET, hcd->regs + HC_HW_MODE_CTRL); mdelay(10); - isp1760_writel(scratch, hcd->regs + HC_HW_MODE_CTRL); + isp1760_writel(hwmode, hcd->regs + HC_HW_MODE_CTRL); - isp1760_writel(PORT1_POWER | PORT1_INIT2, hcd->regs + HC_PORT1_CTRL); - mdelay(10); + isp1760_writel(INTERRUPT_ENABLE_MASK, hcd->regs + HC_INTERRUPT_REG); + isp1760_writel(INTERRUPT_ENABLE_MASK, hcd->regs + HC_INTERRUPT_ENABLE); + + /* + * PORT 1 Control register of the ISP1760 is the OTG control + * register on ISP1761. + */ + if (!(priv->devflags & ISP1760_FLAG_ISP1761) && + !(priv->devflags & ISP1760_FLAG_PORT1_DIS)) { + isp1760_writel(PORT1_POWER | PORT1_INIT2, + hcd->regs + HC_PORT1_CTRL); + mdelay(10); + } priv->hcs_params = isp1760_readl(hcd->regs + HC_HCSPARAMS); @@ -453,8 +488,7 @@ static int isp1760_run(struct usb_hcd *hcd) hcd->state = HC_STATE_RUNNING; isp1760_enable_interrupts(hcd); temp = isp1760_readl(hcd->regs + HC_HW_MODE_CTRL); - temp |= FINAL_HW_CONFIG; - isp1760_writel(temp, hcd->regs + HC_HW_MODE_CTRL); + isp1760_writel(temp | HW_GLOBAL_INTR_EN, hcd->regs + HC_HW_MODE_CTRL); command = isp1760_readl(hcd->regs + HC_USBCMD); command &= ~(CMD_LRESET|CMD_RESET); @@ -782,8 +816,8 @@ static void enqueue_one_int_qtd(u32 int_regs, u32 payload, qtd->status |= slot << 16; } -void enqueue_an_ATL_packet(struct usb_hcd *hcd, struct isp1760_qh *qh, - struct isp1760_qtd *qtd) +static void enqueue_an_ATL_packet(struct usb_hcd *hcd, struct isp1760_qh *qh, + struct isp1760_qtd *qtd) { struct isp1760_hcd *priv = hcd_to_priv(hcd); u32 skip_map, or_map; @@ -816,8 +850,8 @@ void enqueue_an_ATL_packet(struct usb_hcd *hcd, struct isp1760_qh *qh, isp1760_writel(buffstatus, hcd->regs + HC_BUFFER_STATUS_REG); } -void enqueue_an_INT_packet(struct usb_hcd *hcd, struct isp1760_qh *qh, - struct isp1760_qtd *qtd) +static void enqueue_an_INT_packet(struct usb_hcd *hcd, struct isp1760_qh *qh, + struct isp1760_qtd *qtd) { struct isp1760_hcd *priv = hcd_to_priv(hcd); u32 skip_map, or_map; @@ -1592,7 +1626,7 @@ static int isp1760_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, struct inter_packet_info *ints; u32 i; u32 reg_base, or_reg, skip_reg; - int flags; + unsigned long flags; struct ptd ptd; switch (usb_pipetype(urb->pipe)) { @@ -2061,7 +2095,7 @@ static void isp1760_endpoint_disable(struct usb_hcd *usb_hcd, struct isp1760_hcd *priv = hcd_to_priv(usb_hcd); struct isp1760_qh *qh; struct isp1760_qtd *qtd; - u32 flags; + unsigned long flags; spin_lock_irqsave(&priv->lock, flags); qh = ep->hcpriv; @@ -2112,6 +2146,7 @@ static int isp1760_get_frame(struct usb_hcd *hcd) static void isp1760_stop(struct usb_hcd *hcd) { struct isp1760_hcd *priv = hcd_to_priv(hcd); + u32 temp; isp1760_hub_control(hcd, ClearPortFeature, USB_PORT_FEAT_POWER, 1, NULL, 0); @@ -2120,7 +2155,8 @@ static void isp1760_stop(struct usb_hcd *hcd) spin_lock_irq(&priv->lock); ehci_reset(priv); /* Disable IRQ */ - isp1760_writel(HW_DATA_BUS_32BIT, hcd->regs + HC_HW_MODE_CTRL); + temp = isp1760_readl(hcd->regs + HC_HW_MODE_CTRL); + isp1760_writel(temp &= ~HW_GLOBAL_INTR_EN, hcd->regs + HC_HW_MODE_CTRL); spin_unlock_irq(&priv->lock); isp1760_writel(0, hcd->regs + HC_CONFIGFLAG); @@ -2128,10 +2164,11 @@ static void isp1760_stop(struct usb_hcd *hcd) static void isp1760_shutdown(struct usb_hcd *hcd) { - u32 command; + u32 command, temp; isp1760_stop(hcd); - isp1760_writel(HW_DATA_BUS_32BIT, hcd->regs + HC_HW_MODE_CTRL); + temp = isp1760_readl(hcd->regs + HC_HW_MODE_CTRL); + isp1760_writel(temp &= ~HW_GLOBAL_INTR_EN, hcd->regs + HC_HW_MODE_CTRL); command = isp1760_readl(hcd->regs + HC_USBCMD); command &= ~CMD_RUN; @@ -2183,7 +2220,8 @@ void deinit_kmem_cache(void) } struct usb_hcd *isp1760_register(u64 res_start, u64 res_len, int irq, - u64 irqflags, struct device *dev, const char *busname) + u64 irqflags, struct device *dev, const char *busname, + unsigned int devflags) { struct usb_hcd *hcd; struct isp1760_hcd *priv; @@ -2195,11 +2233,12 @@ struct usb_hcd *isp1760_register(u64 res_start, u64 res_len, int irq, /* prevent usb-core allocating DMA pages */ dev->dma_mask = NULL; - hcd = usb_create_hcd(&isp1760_hc_driver, dev, dev->bus_id); + hcd = usb_create_hcd(&isp1760_hc_driver, dev, dev_name(dev)); if (!hcd) return ERR_PTR(-ENOMEM); priv = hcd_to_priv(hcd); + priv->devflags = devflags; init_memory(priv); hcd->regs = ioremap(res_start, res_len); if (!hcd->regs) { diff --git a/drivers/usb/host/isp1760-hcd.h b/drivers/usb/host/isp1760-hcd.h index 3d86d0f6b14..6473dd86993 100644 --- a/drivers/usb/host/isp1760-hcd.h +++ b/drivers/usb/host/isp1760-hcd.h @@ -3,7 +3,8 @@ /* exports for if */ struct usb_hcd *isp1760_register(u64 res_start, u64 res_len, int irq, - u64 irqflags, struct device *dev, const char *busname); + u64 irqflags, struct device *dev, const char *busname, + unsigned int devflags); int init_kmem_once(void); void deinit_kmem_cache(void); @@ -31,6 +32,7 @@ void deinit_kmem_cache(void); /* Configuration Register */ #define HC_HW_MODE_CTRL 0x300 #define ALL_ATX_RESET (1 << 31) +#define HW_ANA_DIGI_OC (1 << 15) #define HW_DATA_BUS_32BIT (1 << 8) #define HW_DACK_POL_HIGH (1 << 6) #define HW_DREQ_POL_HIGH (1 << 5) @@ -56,13 +58,14 @@ void deinit_kmem_cache(void); #define PORT1_POWER (3 << 3) #define PORT1_INIT1 (1 << 7) #define PORT1_INIT2 (1 << 23) +#define HW_OTG_CTRL_SET 0x374 +#define HW_OTG_CTRL_CLR 0x376 /* Interrupt Register */ #define HC_INTERRUPT_REG 0x310 #define HC_INTERRUPT_ENABLE 0x314 #define INTERRUPT_ENABLE_MASK (HC_INTL_INT | HC_ATL_INT | HC_EOT_INT) -#define FINAL_HW_CONFIG (HW_GLOBAL_INTR_EN | HW_DATA_BUS_32BIT) #define HC_ISO_INT (1 << 9) #define HC_ATL_INT (1 << 8) @@ -122,6 +125,19 @@ typedef void (packet_enqueue)(struct usb_hcd *hcd, struct isp1760_qh *qh, #define isp1760_err(priv, fmt, args...) \ dev_err(priv_to_hcd(priv)->self.controller, fmt, ##args) +/* + * Device flags that can vary from board to board. All of these + * indicate the most "atypical" case, so that a devflags of 0 is + * a sane default configuration. + */ +#define ISP1760_FLAG_PORT1_DIS 0x00000001 /* Port 1 disabled */ +#define ISP1760_FLAG_BUS_WIDTH_16 0x00000002 /* 16-bit data bus width */ +#define ISP1760_FLAG_OTG_EN 0x00000004 /* Port 1 supports OTG */ +#define ISP1760_FLAG_ANALOG_OC 0x00000008 /* Analog overcurrent */ +#define ISP1760_FLAG_DACK_POL_HIGH 0x00000010 /* DACK active high */ +#define ISP1760_FLAG_DREQ_POL_HIGH 0x00000020 /* DREQ active high */ +#define ISP1760_FLAG_ISP1761 0x00000040 /* Chip is ISP1761 */ + /* chip memory management */ struct memory_chunk { unsigned int start; diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c index c9db3fe9872..051ef7b6bdc 100644 --- a/drivers/usb/host/isp1760-if.c +++ b/drivers/usb/host/isp1760-if.c @@ -35,13 +35,15 @@ static int of_isp1760_probe(struct of_device *dev, int virq; u64 res_len; int ret; + const unsigned int *prop; + unsigned int devflags = 0; ret = of_address_to_resource(dp, 0, &memory); if (ret) return -ENXIO; res = request_mem_region(memory.start, memory.end - memory.start + 1, - dev->dev.bus_id); + dev_name(&dev->dev)); if (!res) return -EBUSY; @@ -55,8 +57,32 @@ static int of_isp1760_probe(struct of_device *dev, virq = irq_create_of_mapping(oirq.controller, oirq.specifier, oirq.size); + if (of_device_is_compatible(dp, "nxp,usb-isp1761")) + devflags |= ISP1760_FLAG_ISP1761; + + if (of_get_property(dp, "port1-disable", NULL) != NULL) + devflags |= ISP1760_FLAG_PORT1_DIS; + + /* Some systems wire up only 16 of the 32 data lines */ + prop = of_get_property(dp, "bus-width", NULL); + if (prop && *prop == 16) + devflags |= ISP1760_FLAG_BUS_WIDTH_16; + + if (of_get_property(dp, "port1-otg", NULL) != NULL) + devflags |= ISP1760_FLAG_OTG_EN; + + if (of_get_property(dp, "analog-oc", NULL) != NULL) + devflags |= ISP1760_FLAG_ANALOG_OC; + + if (of_get_property(dp, "dack-polarity", NULL) != NULL) + devflags |= ISP1760_FLAG_DACK_POL_HIGH; + + if (of_get_property(dp, "dreq-polarity", NULL) != NULL) + devflags |= ISP1760_FLAG_DREQ_POL_HIGH; + hcd = isp1760_register(memory.start, res_len, virq, - IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev->dev.bus_id); + IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev), + devflags); if (IS_ERR(hcd)) { ret = PTR_ERR(hcd); goto release_reg; @@ -87,6 +113,9 @@ static struct of_device_id of_isp1760_match[] = { { .compatible = "nxp,usb-isp1760", }, + { + .compatible = "nxp,usb-isp1761", + }, { }, }; MODULE_DEVICE_TABLE(of, of_isp1760_match); @@ -116,6 +145,7 @@ static int __devinit isp1761_pci_probe(struct pci_dev *dev, int length; int status = 1; struct usb_hcd *hcd; + unsigned int devflags = 0; if (usb_disabled()) return -ENODEV; @@ -200,7 +230,8 @@ static int __devinit isp1761_pci_probe(struct pci_dev *dev, dev->dev.dma_mask = NULL; hcd = isp1760_register(pci_mem_phy0, length, dev->irq, - IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev->dev.bus_id); + IRQF_SHARED | IRQF_DISABLED, &dev->dev, dev_name(&dev->dev), + devflags); pci_set_drvdata(dev, hcd); if (!hcd) return 0; diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index e534f9de0f0..a5d8e550d89 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -91,7 +91,7 @@ static void at91_stop_hc(struct platform_device *pdev) /*-------------------------------------------------------------------------*/ -static int usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *); +static void usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *); /* configure so an HC device and id are always provided */ /* always called with process context; sleeping is OK */ @@ -184,13 +184,14 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, * context, "rmmod" or something similar. * */ -static int usb_hcd_at91_remove(struct usb_hcd *hcd, +static void usb_hcd_at91_remove(struct usb_hcd *hcd, struct platform_device *pdev) { usb_remove_hcd(hcd); at91_stop_hc(pdev); iounmap(hcd->regs); release_mem_region(hcd->rsrc_start, hcd->rsrc_len); + usb_put_hcd(hcd); if (cpu_is_at91sam9261()) clk_put(hclk); @@ -199,7 +200,6 @@ static int usb_hcd_at91_remove(struct usb_hcd *hcd, fclk = iclk = hclk = NULL; dev_set_drvdata(&pdev->dev, NULL); - return 0; } /*-------------------------------------------------------------------------*/ @@ -309,7 +309,8 @@ static int ohci_hcd_at91_drv_remove(struct platform_device *pdev) } device_init_wakeup(&pdev->dev, 0); - return usb_hcd_at91_remove(platform_get_drvdata(pdev), pdev); + usb_hcd_at91_remove(platform_get_drvdata(pdev), pdev); + return 0; } #ifdef CONFIG_PM diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c index 68c17f5ea8e..c0948008fe3 100644 --- a/drivers/usb/host/ohci-au1xxx.c +++ b/drivers/usb/host/ohci-au1xxx.c @@ -34,7 +34,8 @@ #ifdef __LITTLE_ENDIAN #define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C) #elif __BIG_ENDIAN -#define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C | USBH_ENABLE_BE) +#define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C | \ + USBH_ENABLE_BE) #else #error not byte order defined #endif @@ -46,213 +47,87 @@ #define USB_MCFG_RDCOMB (1<<30) #define USB_MCFG_SSDEN (1<<23) #define USB_MCFG_OHCCLKEN (1<<16) +#ifdef CONFIG_DMA_COHERENT #define USB_MCFG_UCAM (1<<7) +#else +#define USB_MCFG_UCAM (0) +#endif #define USB_MCFG_OBMEN (1<<1) #define USB_MCFG_OMEMEN (1<<0) #define USBH_ENABLE_CE USB_MCFG_OHCCLKEN -#ifdef CONFIG_DMA_COHERENT -#define USBH_ENABLE_INIT (USB_MCFG_OHCCLKEN \ - | USB_MCFG_PFEN | USB_MCFG_RDCOMB \ - | USB_MCFG_SSDEN | USB_MCFG_UCAM \ - | USB_MCFG_OBMEN | USB_MCFG_OMEMEN) -#else -#define USBH_ENABLE_INIT (USB_MCFG_OHCCLKEN \ - | USB_MCFG_PFEN | USB_MCFG_RDCOMB \ - | USB_MCFG_SSDEN \ - | USB_MCFG_OBMEN | USB_MCFG_OMEMEN) -#endif + +#define USBH_ENABLE_INIT (USB_MCFG_PFEN | USB_MCFG_RDCOMB | \ + USBH_ENABLE_CE | USB_MCFG_SSDEN | \ + USB_MCFG_UCAM | \ + USB_MCFG_OBMEN | USB_MCFG_OMEMEN) + #define USBH_DISABLE (USB_MCFG_OBMEN | USB_MCFG_OMEMEN) #endif /* Au1200 */ extern int usb_disabled(void); -/*-------------------------------------------------------------------------*/ - -static void au1xxx_start_ohc(struct platform_device *dev) +static void au1xxx_start_ohc(void) { - printk(KERN_DEBUG __FILE__ - ": starting Au1xxx OHCI USB Controller\n"); - /* enable host controller */ - #ifndef CONFIG_SOC_AU1200 - au_writel(USBH_ENABLE_CE, USB_HOST_CONFIG); + au_sync(); udelay(1000); - au_writel(USBH_ENABLE_INIT, USB_HOST_CONFIG); - udelay(1000); - -#else /* Au1200 */ - /* write HW defaults again in case Yamon cleared them */ - if (au_readl(USB_HOST_CONFIG) == 0) { - au_writel(0x00d02000, USB_HOST_CONFIG); - au_readl(USB_HOST_CONFIG); - udelay(1000); - } - au_writel(USBH_ENABLE_CE | au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG); - au_readl(USB_HOST_CONFIG); + au_writel(au_readl(USB_HOST_CONFIG) | USBH_ENABLE_INIT, USB_HOST_CONFIG); + au_sync(); udelay(1000); - au_writel(USBH_ENABLE_INIT | au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG); - au_readl(USB_HOST_CONFIG); - udelay(1000); - -#endif /* Au1200 */ -#ifndef CONFIG_SOC_AU1200 /* wait for reset complete (read register twice; see au1500 errata) */ while (au_readl(USB_HOST_CONFIG), !(au_readl(USB_HOST_CONFIG) & USBH_ENABLE_RD)) -#endif udelay(1000); - printk(KERN_DEBUG __FILE__ - ": Clock to USB host has been enabled \n"); -} - -static void au1xxx_stop_ohc(struct platform_device *dev) -{ - printk(KERN_DEBUG __FILE__ - ": stopping Au1xxx OHCI USB Controller\n"); - -#ifndef CONFIG_SOC_AU1200 - - /* Disable clock */ - au_writel(au_readl(USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG); - #else /* Au1200 */ - - /* Disable mem */ - au_writel(~USBH_DISABLE & au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG); + au_writel(au_readl(USB_HOST_CONFIG) | USBH_ENABLE_CE, USB_HOST_CONFIG); + au_sync(); udelay(1000); - /* Disable clock */ - au_writel(~USBH_ENABLE_CE & au_readl(USB_HOST_CONFIG), USB_HOST_CONFIG); - au_readl(USB_HOST_CONFIG); + + au_writel(au_readl(USB_HOST_CONFIG) | USBH_ENABLE_INIT, USB_HOST_CONFIG); + au_sync(); + udelay(2000); #endif /* Au1200 */ } - -/*-------------------------------------------------------------------------*/ - -/* configure so an HC device and id are always provided */ -/* always called with process context; sleeping is OK */ - - -/** - * usb_ohci_au1xxx_probe - initialize Au1xxx-based HCDs - * Context: !in_interrupt() - * - * Allocates basic resources for this USB host controller, and - * then invokes the start() method for the HCD associated with it - * through the hotplug entry's driver_data. - * - */ -static int usb_ohci_au1xxx_probe(const struct hc_driver *driver, - struct platform_device *dev) +static void au1xxx_stop_ohc(void) { - int retval; - struct usb_hcd *hcd; - -#if defined(CONFIG_SOC_AU1200) && defined(CONFIG_DMA_COHERENT) - /* Au1200 AB USB does not support coherent memory */ - if (!(read_c0_prid() & 0xff)) { - pr_info("%s: this is chip revision AB !!\n", - dev->name); - pr_info("%s: update your board or re-configure the kernel\n", - dev->name); - return -ENODEV; - } +#ifdef CONFIG_SOC_AU1200 + /* Disable mem */ + au_writel(au_readl(USB_HOST_CONFIG) & ~USBH_DISABLE, USB_HOST_CONFIG); + au_sync(); + udelay(1000); #endif - - if (dev->resource[1].flags != IORESOURCE_IRQ) { - pr_debug("resource[1] is not IORESOURCE_IRQ\n"); - return -ENOMEM; - } - - hcd = usb_create_hcd(driver, &dev->dev, "au1xxx"); - if (!hcd) - return -ENOMEM; - hcd->rsrc_start = dev->resource[0].start; - hcd->rsrc_len = dev->resource[0].end - dev->resource[0].start + 1; - - if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { - pr_debug("request_mem_region failed\n"); - retval = -EBUSY; - goto err1; - } - - hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); - if (!hcd->regs) { - pr_debug("ioremap failed\n"); - retval = -ENOMEM; - goto err2; - } - - au1xxx_start_ohc(dev); - ohci_hcd_init(hcd_to_ohci(hcd)); - - retval = usb_add_hcd(hcd, dev->resource[1].start, IRQF_DISABLED | IRQF_SHARED); - if (retval == 0) - return retval; - - au1xxx_stop_ohc(dev); - iounmap(hcd->regs); - err2: - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); - err1: - usb_put_hcd(hcd); - return retval; -} - - -/* may be called without controller electrically present */ -/* may be called with controller, bus, and devices active */ - -/** - * usb_hcd_au1xxx_remove - shutdown processing for Au1xxx-based HCDs - * @dev: USB Host Controller being removed - * Context: !in_interrupt() - * - * Reverses the effect of usb_hcd_au1xxx_probe(), first invoking - * the HCD's stop() method. It is always called from a thread - * context, normally "rmmod", "apmd", or something similar. - * - */ -static void usb_ohci_au1xxx_remove(struct usb_hcd *hcd, struct platform_device *dev) -{ - usb_remove_hcd(hcd); - au1xxx_stop_ohc(dev); - iounmap(hcd->regs); - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); - usb_put_hcd(hcd); + /* Disable clock */ + au_writel(au_readl(USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG); + au_sync(); } -/*-------------------------------------------------------------------------*/ - -static int __devinit -ohci_au1xxx_start (struct usb_hcd *hcd) +static int __devinit ohci_au1xxx_start(struct usb_hcd *hcd) { - struct ohci_hcd *ohci = hcd_to_ohci (hcd); - int ret; + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + int ret; - ohci_dbg (ohci, "ohci_au1xxx_start, ohci:%p", ohci); + ohci_dbg(ohci, "ohci_au1xxx_start, ohci:%p", ohci); - if ((ret = ohci_init (ohci)) < 0) + if ((ret = ohci_init(ohci)) < 0) return ret; - if ((ret = ohci_run (ohci)) < 0) { + if ((ret = ohci_run(ohci)) < 0) { err ("can't start %s", hcd->self.bus_name); - ohci_stop (hcd); + ohci_stop(hcd); return ret; } return 0; } -/*-------------------------------------------------------------------------*/ - static const struct hc_driver ohci_au1xxx_hc_driver = { .description = hcd_name, .product_desc = "Au1xxx OHCI", @@ -296,18 +171,66 @@ static const struct hc_driver ohci_au1xxx_hc_driver = { .start_port_reset = ohci_start_port_reset, }; -/*-------------------------------------------------------------------------*/ - static int ohci_hcd_au1xxx_drv_probe(struct platform_device *pdev) { int ret; - - pr_debug ("In ohci_hcd_au1xxx_drv_probe"); + struct usb_hcd *hcd; if (usb_disabled()) return -ENODEV; - ret = usb_ohci_au1xxx_probe(&ohci_au1xxx_hc_driver, pdev); +#if defined(CONFIG_SOC_AU1200) && defined(CONFIG_DMA_COHERENT) + /* Au1200 AB USB does not support coherent memory */ + if (!(read_c0_prid() & 0xff)) { + printk(KERN_INFO "%s: this is chip revision AB !!\n", + pdev->name); + printk(KERN_INFO "%s: update your board or re-configure " + "the kernel\n", pdev->name); + return -ENODEV; + } +#endif + + if (pdev->resource[1].flags != IORESOURCE_IRQ) { + pr_debug("resource[1] is not IORESOURCE_IRQ\n"); + return -ENOMEM; + } + + hcd = usb_create_hcd(&ohci_au1xxx_hc_driver, &pdev->dev, "au1xxx"); + if (!hcd) + return -ENOMEM; + + hcd->rsrc_start = pdev->resource[0].start; + hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1; + + if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { + pr_debug("request_mem_region failed\n"); + ret = -EBUSY; + goto err1; + } + + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + if (!hcd->regs) { + pr_debug("ioremap failed\n"); + ret = -ENOMEM; + goto err2; + } + + au1xxx_start_ohc(); + ohci_hcd_init(hcd_to_ohci(hcd)); + + ret = usb_add_hcd(hcd, pdev->resource[1].start, + IRQF_DISABLED | IRQF_SHARED); + if (ret == 0) { + platform_set_drvdata(pdev, hcd); + return ret; + } + + au1xxx_stop_ohc(); + iounmap(hcd->regs); +err2: + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); +err1: + usb_put_hcd(hcd); return ret; } @@ -315,30 +238,78 @@ static int ohci_hcd_au1xxx_drv_remove(struct platform_device *pdev) { struct usb_hcd *hcd = platform_get_drvdata(pdev); - usb_ohci_au1xxx_remove(hcd, pdev); + usb_remove_hcd(hcd); + au1xxx_stop_ohc(); + iounmap(hcd->regs); + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); + usb_put_hcd(hcd); + platform_set_drvdata(pdev, NULL); + return 0; } - /*TBD*/ -/*static int ohci_hcd_au1xxx_drv_suspend(struct platform_device *dev) + +#ifdef CONFIG_PM +static int ohci_hcd_au1xxx_drv_suspend(struct platform_device *pdev, + pm_message_t message) { - struct usb_hcd *hcd = platform_get_drvdata(dev); + struct usb_hcd *hcd = platform_get_drvdata(pdev); + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + unsigned long flags; + int rc; + + rc = 0; + + /* Root hub was already suspended. Disable irq emission and + * mark HW unaccessible, bail out if RH has been resumed. Use + * the spinlock to properly synchronize with possible pending + * RH suspend or resume activity. + * + * This is still racy as hcd->state is manipulated outside of + * any locks =P But that will be a different fix. + */ + spin_lock_irqsave(&ohci->lock, flags); + if (hcd->state != HC_STATE_SUSPENDED) { + rc = -EINVAL; + goto bail; + } + ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable); + (void)ohci_readl(ohci, &ohci->regs->intrdisable); - return 0; + /* make sure snapshot being resumed re-enumerates everything */ + if (message.event == PM_EVENT_PRETHAW) + ohci_usb_reset(ohci); + + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + + au1xxx_stop_ohc(); +bail: + spin_unlock_irqrestore(&ohci->lock, flags); + + return rc; } -static int ohci_hcd_au1xxx_drv_resume(struct platform_device *dev) + +static int ohci_hcd_au1xxx_drv_resume(struct platform_device *pdev) { - struct usb_hcd *hcd = platform_get_drvdata(dev); + struct usb_hcd *hcd = platform_get_drvdata(pdev); + + au1xxx_start_ohc(); + + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + ohci_finish_controller_resume(hcd); return 0; } -*/ +#else +#define ohci_hcd_au1xxx_drv_suspend NULL +#define ohci_hcd_au1xxx_drv_resume NULL +#endif static struct platform_driver ohci_hcd_au1xxx_driver = { .probe = ohci_hcd_au1xxx_drv_probe, .remove = ohci_hcd_au1xxx_drv_remove, .shutdown = usb_hcd_platform_shutdown, - /*.suspend = ohci_hcd_au1xxx_drv_suspend, */ - /*.resume = ohci_hcd_au1xxx_drv_resume, */ + .suspend = ohci_hcd_au1xxx_drv_suspend, + .resume = ohci_hcd_au1xxx_drv_resume, .driver = { .name = "au1xxx-ohci", .owner = THIS_MODULE, diff --git a/drivers/usb/host/ohci-dbg.c b/drivers/usb/host/ohci-dbg.c index e06bfaebec5..7cef1d2f7cc 100644 --- a/drivers/usb/host/ohci-dbg.c +++ b/drivers/usb/host/ohci-dbg.c @@ -651,7 +651,7 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf) "%s\n" "%s version " DRIVER_VERSION "\n", hcd->self.controller->bus->name, - hcd->self.controller->bus_id, + dev_name(hcd->self.controller), hcd->product_desc, hcd_name); diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index a8160d65f32..26bc47941d0 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -974,7 +974,7 @@ MODULE_LICENSE ("GPL"); #define PCI_DRIVER ohci_pci_driver #endif -#ifdef CONFIG_SA1111 +#if defined(CONFIG_ARCH_SA1100) && defined(CONFIG_SA1111) #include "ohci-sa1111.c" #define SA1111_DRIVER ohci_hcd_sa1111_driver #endif diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c index a19a4f80a6e..6e5e5f81ac9 100644 --- a/drivers/usb/host/ohci-omap.c +++ b/drivers/usb/host/ohci-omap.c @@ -329,7 +329,7 @@ static int usb_hcd_omap_probe (const struct hc_driver *driver, } - hcd = usb_create_hcd (driver, &pdev->dev, pdev->dev.bus_id); + hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { retval = -ENOMEM; goto err0; diff --git a/drivers/usb/host/ohci-pnx4008.c b/drivers/usb/host/ohci-pnx4008.c index 28b458f20cc..6ad8f2fc57b 100644 --- a/drivers/usb/host/ohci-pnx4008.c +++ b/drivers/usb/host/ohci-pnx4008.c @@ -109,8 +109,6 @@ static struct clk *usb_clk; static int isp1301_probe(struct i2c_adapter *adap); static int isp1301_detach(struct i2c_client *client); -static int isp1301_command(struct i2c_client *client, unsigned int cmd, - void *arg); static const unsigned short normal_i2c[] = { ISP1301_I2C_ADDR, ISP1301_I2C_ADDR + 1, I2C_CLIENT_END }; @@ -123,30 +121,37 @@ static struct i2c_client_address_data addr_data = { }; struct i2c_driver isp1301_driver = { - .class = I2C_CLASS_HWMON, + .driver = { + .name = "isp1301_pnx", + }, .attach_adapter = isp1301_probe, .detach_client = isp1301_detach, - .command = isp1301_command }; static int isp1301_attach(struct i2c_adapter *adap, int addr, int kind) { struct i2c_client *c; + int err; c = kzalloc(sizeof(*c), GFP_KERNEL); - if (!c) return -ENOMEM; - strcpy(c->name, "isp1301"); + strlcpy(c->name, "isp1301_pnx", I2C_NAME_SIZE); c->flags = 0; c->addr = addr; c->adapter = adap; c->driver = &isp1301_driver; + err = i2c_attach_client(c); + if (err) { + kfree(c); + return err; + } + isp1301_i2c_client = c; - return i2c_attach_client(c); + return 0; } static int isp1301_probe(struct i2c_adapter *adap) @@ -161,13 +166,6 @@ static int isp1301_detach(struct i2c_client *client) return 0; } -/* No commands defined */ -static int isp1301_command(struct i2c_client *client, unsigned int cmd, - void *arg) -{ - return 0; -} - static void i2c_write(u8 buf, u8 subaddr) { char tmpbuf[2]; @@ -389,7 +387,7 @@ static int __devinit usb_hcd_pnx4008_probe(struct platform_device *pdev) while ((__raw_readl(USB_OTG_CLK_STAT) & USB_CLOCK_MASK) != USB_CLOCK_MASK) ; - hcd = usb_create_hcd (driver, &pdev->dev, pdev->dev.bus_id); + hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { err("Failed to allocate HC buffer"); ret = -ENOMEM; diff --git a/drivers/usb/host/ohci-ppc-of.c b/drivers/usb/host/ohci-ppc-of.c index a6725279122..91e6e101a4c 100644 --- a/drivers/usb/host/ohci-ppc-of.c +++ b/drivers/usb/host/ohci-ppc-of.c @@ -14,8 +14,8 @@ */ #include <linux/signal.h> +#include <linux/of_platform.h> -#include <asm/of_platform.h> #include <asm/prom.h> diff --git a/drivers/usb/host/ohci-ps3.c b/drivers/usb/host/ohci-ps3.c index c1935ae537f..55c95647f00 100644 --- a/drivers/usb/host/ohci-ps3.c +++ b/drivers/usb/host/ohci-ps3.c @@ -129,7 +129,7 @@ static int ps3_ohci_probe(struct ps3_system_bus_device *dev) dev->core.dma_mask = &dummy_mask; /* FIXME: for improper usb code */ - hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev->core.bus_id); + hcd = usb_create_hcd(&ps3_ohci_hc_driver, &dev->core, dev_name(&dev->core)); if (!hcd) { dev_dbg(&dev->core, "%s:%d: usb_create_hcd failed\n", __func__, diff --git a/drivers/usb/host/ohci-q.c b/drivers/usb/host/ohci-q.c index 9b547407c93..6a9b4c55795 100644 --- a/drivers/usb/host/ohci-q.c +++ b/drivers/usb/host/ohci-q.c @@ -159,9 +159,6 @@ static int ed_schedule (struct ohci_hcd *ohci, struct ed *ed) { int branch; - if (ohci_to_hcd(ohci)->state == HC_STATE_QUIESCING) - return -EAGAIN; - ed->state = ED_OPER; ed->ed_prev = NULL; ed->ed_next = NULL; diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c index e610698c6b6..21b164e4abe 100644 --- a/drivers/usb/host/ohci-sm501.c +++ b/drivers/usb/host/ohci-sm501.c @@ -143,7 +143,7 @@ static int ohci_hcd_sm501_drv_probe(struct platform_device *pdev) goto err2; } - hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id); + hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { retval = -ENOMEM; goto err2; diff --git a/drivers/usb/host/ohci-ssb.c b/drivers/usb/host/ohci-ssb.c index 7275186db31..3660c83d80a 100644 --- a/drivers/usb/host/ohci-ssb.c +++ b/drivers/usb/host/ohci-ssb.c @@ -113,7 +113,7 @@ static int ssb_ohci_attach(struct ssb_device *dev) ssb_device_enable(dev, flags); hcd = usb_create_hcd(&ssb_ohci_hc_driver, dev->dev, - dev->dev->bus_id); + dev_name(dev->dev)); if (!hcd) goto err_dev_disable; ohcidev = hcd_to_ssb_ohci(hcd); diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c index 16667342b3c..d5f02dddb12 100644 --- a/drivers/usb/host/r8a66597-hcd.c +++ b/drivers/usb/host/r8a66597-hcd.c @@ -312,9 +312,9 @@ static void put_child_connect_map(struct r8a66597 *r8a66597, int address) static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch) { u16 pipenum = pipe->info.pipenum; - unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; - unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; - unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; + const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO}; + const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL}; + const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR}; if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */ dma_ch = R8A66597_PIPE_NO_DMA; @@ -863,6 +863,32 @@ static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597, dev->dma_map = 0; } +static u16 get_interval(struct urb *urb, __u8 interval) +{ + u16 time = 1; + int i; + + if (urb->dev->speed == USB_SPEED_HIGH) { + if (interval > IITV) + time = IITV; + else + time = interval ? interval - 1 : 0; + } else { + if (interval > 128) { + time = IITV; + } else { + /* calculate the nearest value for PIPEPERI */ + for (i = 0; i < 7; i++) { + if ((1 << i) < interval && + (1 << (i + 1) > interval)) + time = 1 << i; + } + } + } + + return time; +} + static unsigned long get_timer_interval(struct urb *urb, __u8 interval) { __u8 i; @@ -901,10 +927,7 @@ static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb, info.interval = 0; info.timer_interval = 0; } else { - if (ep->bInterval > IITV) - info.interval = IITV; - else - info.interval = ep->bInterval ? ep->bInterval - 1 : 0; + info.interval = get_interval(urb, ep->bInterval); info.timer_interval = get_timer_interval(urb, ep->bInterval); } if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) @@ -2244,6 +2267,7 @@ static int __init r8a66597_probe(struct platform_device *pdev) struct r8a66597 *r8a66597; int ret = 0; int i; + unsigned long irq_trigger; if (pdev->dev.dma_mask) { ret = -EINVAL; @@ -2302,7 +2326,11 @@ static int __init r8a66597_probe(struct platform_device *pdev) INIT_LIST_HEAD(&r8a66597->child_device); hcd->rsrc_start = res->start; - ret = usb_add_hcd(hcd, irq, IRQF_DISABLED); + if (irq_sense == INTL) + irq_trigger = IRQF_TRIGGER_LOW; + else + irq_trigger = IRQF_TRIGGER_FALLING; + ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger); if (ret != 0) { err("Failed to add hcd"); goto clean_up; diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c index 426575247b2..340d72da554 100644 --- a/drivers/usb/host/sl811-hcd.c +++ b/drivers/usb/host/sl811-hcd.c @@ -1674,7 +1674,7 @@ sl811h_probe(struct platform_device *dev) } /* allocate and initialize hcd */ - hcd = usb_create_hcd(&sl811h_hc_driver, &dev->dev, dev->dev.bus_id); + hcd = usb_create_hcd(&sl811h_hc_driver, &dev->dev, dev_name(&dev->dev)); if (!hcd) { retval = -ENOMEM; goto err5; diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c index 9b6323f768b..20ad3c48fcb 100644 --- a/drivers/usb/host/u132-hcd.c +++ b/drivers/usb/host/u132-hcd.c @@ -3124,7 +3124,7 @@ static int __devinit u132_probe(struct platform_device *pdev) if (pdev->dev.dma_mask) return -EINVAL; - hcd = usb_create_hcd(&u132_hc_driver, &pdev->dev, pdev->dev.bus_id); + hcd = usb_create_hcd(&u132_hc_driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { printk(KERN_ERR "failed to create the usb hcd struct for U132\n" ); diff --git a/drivers/usb/host/uhci-hub.c b/drivers/usb/host/uhci-hub.c index 8e4427aebb1..885b585360b 100644 --- a/drivers/usb/host/uhci-hub.c +++ b/drivers/usb/host/uhci-hub.c @@ -12,7 +12,7 @@ * (C) Copyright 2004 Alan Stern, stern@rowland.harvard.edu */ -static __u8 root_hub_hub_des[] = +static const __u8 root_hub_hub_des[] = { 0x09, /* __u8 bLength; */ 0x29, /* __u8 bDescriptorType; Hub-descriptor */ diff --git a/drivers/usb/misc/auerswald.c b/drivers/usb/misc/auerswald.c index 09393869742..d2f61d5510e 100644 --- a/drivers/usb/misc/auerswald.c +++ b/drivers/usb/misc/auerswald.c @@ -1421,7 +1421,8 @@ ofail: mutex_unlock(&cp->mutex); /* IOCTL functions */ -static int auerchar_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) +static long auerchar_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) { pauerchar_t ccp = (pauerchar_t) file->private_data; int ret = 0; @@ -1452,7 +1453,7 @@ static int auerchar_ioctl (struct inode *inode, struct file *file, unsigned int mutex_unlock(&ccp->mutex); return -ENODEV; } - + lock_kernel(); switch (cmd) { /* return != 0 if Transmitt channel ready to send */ @@ -1547,9 +1548,10 @@ static int auerchar_ioctl (struct inode *inode, struct file *file, unsigned int default: dbg ("IOCTL_AU_UNKNOWN"); - ret = -ENOIOCTLCMD; + ret = -ENOTTY; break; } + unlock_kernel(); /* release the mutexes */ mutex_unlock(&cp->mutex); mutex_unlock(&ccp->mutex); @@ -1860,7 +1862,7 @@ static const struct file_operations auerswald_fops = .llseek = no_llseek, .read = auerchar_read, .write = auerchar_write, - .ioctl = auerchar_ioctl, + .unlocked_ioctl = auerchar_ioctl, .open = auerchar_open, .release = auerchar_release, }; diff --git a/drivers/usb/misc/emi62.c b/drivers/usb/misc/emi62.c index 20886c21e73..5d859ded5bb 100644 --- a/drivers/usb/misc/emi62.c +++ b/drivers/usb/misc/emi62.c @@ -6,8 +6,6 @@ * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, as published by * the Free Software Foundation, version 2. - * - * $Id: emi62.c,v 1.15 2002/04/23 06:13:59 tapio Exp $ */ #include <linux/kernel.h> #include <linux/errno.h> diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c index ec88b3bfee4..97c28097153 100644 --- a/drivers/usb/misc/ftdi-elan.c +++ b/drivers/usb/misc/ftdi-elan.c @@ -656,29 +656,6 @@ static int ftdi_elan_release(struct inode *inode, struct file *file) } -#define FTDI_ELAN_IOC_MAGIC 0xA1 -#define FTDI_ELAN_IOCDEBUG _IOC(_IOC_WRITE, FTDI_ELAN_IOC_MAGIC, 1, 132) -static int ftdi_elan_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) -{ - switch (cmd) { - case FTDI_ELAN_IOCDEBUG:{ - char line[132]; - int size = strncpy_from_user(line, - (const char __user *)arg, sizeof(line)); - if (size < 0) { - return -EINVAL; - } else { - printk(KERN_ERR "TODO: ioctl %s\n", line); - return 0; - } - } - default: - return -EFAULT; - } -} - - /* * * blocking bulk reads are used to get data from the device @@ -1222,7 +1199,6 @@ error_1: static const struct file_operations ftdi_elan_fops = { .owner = THIS_MODULE, .llseek = no_llseek, - .ioctl = ftdi_elan_ioctl, .read = ftdi_elan_read, .write = ftdi_elan_write, .open = ftdi_elan_open, diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index 1cb54a28347..e6ca9979e3a 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -474,8 +474,8 @@ exit: /** * iowarrior_ioctl */ -static int iowarrior_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) +static long iowarrior_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) { struct iowarrior *dev = NULL; __u8 *buffer; @@ -493,6 +493,7 @@ static int iowarrior_ioctl(struct inode *inode, struct file *file, return -ENOMEM; /* lock this object */ + lock_kernel(); mutex_lock(&dev->mutex); /* verify that the device wasn't unplugged */ @@ -584,6 +585,7 @@ static int iowarrior_ioctl(struct inode *inode, struct file *file, error_out: /* unlock the device */ mutex_unlock(&dev->mutex); + unlock_kernel(); kfree(buffer); return retval; } @@ -719,7 +721,7 @@ static const struct file_operations iowarrior_fops = { .owner = THIS_MODULE, .write = iowarrior_write, .read = iowarrior_read, - .ioctl = iowarrior_ioctl, + .unlocked_ioctl = iowarrior_ioctl, .open = iowarrior_open, .release = iowarrior_release, .poll = iowarrior_poll, diff --git a/drivers/usb/misc/rio500.c b/drivers/usb/misc/rio500.c index 330c18e390b..248a12aacef 100644 --- a/drivers/usb/misc/rio500.c +++ b/drivers/usb/misc/rio500.c @@ -104,9 +104,7 @@ static int close_rio(struct inode *inode, struct file *file) return 0; } -static int -ioctl_rio(struct inode *inode, struct file *file, unsigned int cmd, - unsigned long arg) +static long ioctl_rio(struct file *file, unsigned int cmd, unsigned long arg) { struct RioCommand rio_cmd; struct rio_usb_data *rio = &rio_instance; @@ -116,6 +114,7 @@ ioctl_rio(struct inode *inode, struct file *file, unsigned int cmd, int retries; int retval=0; + lock_kernel(); mutex_lock(&(rio->lock)); /* Sanity check to make sure rio is connected, powered, etc */ if (rio->present == 0 || rio->rio_dev == NULL) { @@ -254,6 +253,7 @@ ioctl_rio(struct inode *inode, struct file *file, unsigned int cmd, err_out: mutex_unlock(&(rio->lock)); + unlock_kernel(); return retval; } @@ -433,7 +433,7 @@ file_operations usb_rio_fops = { .owner = THIS_MODULE, .read = read_rio, .write = write_rio, - .ioctl = ioctl_rio, + .unlocked_ioctl = ioctl_rio, .open = open_rio, .release = close_rio, }; diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c index 33182f4c226..fbace41a7cb 100644 --- a/drivers/usb/misc/sisusbvga/sisusb.c +++ b/drivers/usb/misc/sisusbvga/sisusb.c @@ -2982,9 +2982,8 @@ sisusb_handle_command(struct sisusb_usb_data *sisusb, struct sisusb_command *y, return retval; } -static int -sisusb_ioctl(struct inode *inode, struct file *file, unsigned int cmd, - unsigned long arg) +static long +sisusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct sisusb_usb_data *sisusb; struct sisusb_info x; @@ -2995,6 +2994,7 @@ sisusb_ioctl(struct inode *inode, struct file *file, unsigned int cmd, if (!(sisusb = (struct sisusb_usb_data *)file->private_data)) return -ENODEV; + lock_kernel(); mutex_lock(&sisusb->lock); /* Sanity check */ @@ -3053,6 +3053,7 @@ sisusb_ioctl(struct inode *inode, struct file *file, unsigned int cmd, err_out: mutex_unlock(&sisusb->lock); + unlock_kernel(); return retval; } @@ -3066,9 +3067,7 @@ sisusb_compat_ioctl(struct file *f, unsigned int cmd, unsigned long arg) case SISUSB_GET_CONFIG_SIZE: case SISUSB_GET_CONFIG: case SISUSB_COMMAND: - lock_kernel(); - retval = sisusb_ioctl(f->f_path.dentry->d_inode, f, cmd, arg); - unlock_kernel(); + retval = sisusb_ioctl(f, cmd, arg); return retval; default: @@ -3087,7 +3086,7 @@ static const struct file_operations usb_sisusb_fops = { #ifdef SISUSB_NEW_CONFIG_COMPAT .compat_ioctl = sisusb_compat_ioctl, #endif - .ioctl = sisusb_ioctl + .unlocked_ioctl = sisusb_ioctl }; static struct usb_class_driver usb_sisusb_class = { diff --git a/drivers/usb/misc/usblcd.c b/drivers/usb/misc/usblcd.c index 7f7021ee418..2db4228fbb0 100644 --- a/drivers/usb/misc/usblcd.c +++ b/drivers/usb/misc/usblcd.c @@ -146,7 +146,7 @@ static ssize_t lcd_read(struct file *file, char __user * buffer, size_t count, l return retval; } -static int lcd_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) +static long lcd_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct usb_lcd *dev; u16 bcdDevice; @@ -158,12 +158,14 @@ static int lcd_ioctl(struct inode *inode, struct file *file, unsigned int cmd, u switch (cmd) { case IOCTL_GET_HARD_VERSION: + lock_kernel(); bcdDevice = le16_to_cpu((dev->udev)->descriptor.bcdDevice); sprintf(buf,"%1d%1d.%1d%1d", (bcdDevice & 0xF000)>>12, (bcdDevice & 0xF00)>>8, (bcdDevice & 0xF0)>>4, (bcdDevice & 0xF)); + unlock_kernel(); if (copy_to_user((void __user *)arg,buf,strlen(buf))!=0) return -EFAULT; break; @@ -272,7 +274,7 @@ static const struct file_operations lcd_fops = { .read = lcd_read, .write = lcd_write, .open = lcd_open, - .ioctl = lcd_ioctl, + .unlocked_ioctl = lcd_ioctl, .release = lcd_release, }; diff --git a/drivers/usb/mon/mon_stat.c b/drivers/usb/mon/mon_stat.c index c7a595cd648..ac8b0d5ce7f 100644 --- a/drivers/usb/mon/mon_stat.c +++ b/drivers/usb/mon/mon_stat.c @@ -9,6 +9,7 @@ #include <linux/kernel.h> #include <linux/usb.h> +#include <linux/fs.h> #include <asm/uaccess.h> #include "usb_mon.h" @@ -42,19 +43,8 @@ static ssize_t mon_stat_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { struct snap *sp = file->private_data; - loff_t pos = *ppos; - int cnt; - if (pos < 0 || pos >= sp->slen) - return 0; - if (nbytes == 0) - return 0; - if ((cnt = sp->slen - pos) > nbytes) - cnt = nbytes; - if (copy_to_user(buf, sp->str + pos, cnt)) - return -EFAULT; - *ppos = pos + cnt; - return cnt; + return simple_read_from_buffer(buf, nbytes, ppos, sp->str, sp->slen); } static int mon_stat_release(struct inode *inode, struct file *file) diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig index 9a7681b5526..8878c1767fc 100644 --- a/drivers/usb/serial/Kconfig +++ b/drivers/usb/serial/Kconfig @@ -64,14 +64,6 @@ config USB_SERIAL_AIRCABLE To compile this driver as a module, choose M here: the module will be called aircable. -config USB_SERIAL_AIRPRIME - tristate "USB AirPrime CDMA Wireless Driver" - help - Say Y here if you want to use a AirPrime CDMA Wireless PC card. - - To compile this driver as a module, choose M here: the - module will be called airprime. - config USB_SERIAL_ARK3116 tristate "USB ARK Micro 3116 USB Serial Driver" help diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile index 17a762ab676..6047f818adf 100644 --- a/drivers/usb/serial/Makefile +++ b/drivers/usb/serial/Makefile @@ -12,7 +12,6 @@ usbserial-obj-$(CONFIG_USB_EZUSB) += ezusb.o usbserial-objs := usb-serial.o generic.o bus.o $(usbserial-obj-y) obj-$(CONFIG_USB_SERIAL_AIRCABLE) += aircable.o -obj-$(CONFIG_USB_SERIAL_AIRPRIME) += airprime.o obj-$(CONFIG_USB_SERIAL_ARK3116) += ark3116.o obj-$(CONFIG_USB_SERIAL_BELKIN) += belkin_sa.o obj-$(CONFIG_USB_SERIAL_CH341) += ch341.o diff --git a/drivers/usb/serial/airprime.c b/drivers/usb/serial/airprime.c deleted file mode 100644 index 0798c14ce78..00000000000 --- a/drivers/usb/serial/airprime.c +++ /dev/null @@ -1,353 +0,0 @@ -/* - * AirPrime CDMA Wireless Serial USB driver - * - * Copyright (C) 2005-2006 Greg Kroah-Hartman <gregkh@suse.de> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 as published by the Free Software Foundation. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/tty.h> -#include <linux/tty_flip.h> -#include <linux/module.h> -#include <linux/usb.h> -#include <linux/usb/serial.h> - -static struct usb_device_id id_table [] = { - { USB_DEVICE(0x0c88, 0x17da) }, /* Kyocera Wireless KPC650/Passport */ - { }, -}; -MODULE_DEVICE_TABLE(usb, id_table); - -#define URB_TRANSFER_BUFFER_SIZE 4096 -#define NUM_READ_URBS 4 -#define NUM_WRITE_URBS 4 -#define NUM_BULK_EPS 3 -#define MAX_BULK_EPS 6 - -/* if overridden by the user, then use their value for the size of the - * read and write urbs, and the number of endpoints */ -static int buffer_size = URB_TRANSFER_BUFFER_SIZE; -static int endpoints = NUM_BULK_EPS; -static int debug; -struct airprime_private { - spinlock_t lock; - int outstanding_urbs; - int throttled; - struct urb *read_urbp[NUM_READ_URBS]; - - /* Settings for the port */ - int rts_state; /* Handshaking pins (outputs) */ - int dtr_state; - int cts_state; /* Handshaking pins (inputs) */ - int dsr_state; - int dcd_state; - int ri_state; -}; - -static int airprime_send_setup(struct usb_serial_port *port) -{ - struct usb_serial *serial = port->serial; - struct airprime_private *priv; - - dbg("%s", __func__); - - if (port->number != 0) - return 0; - - priv = usb_get_serial_port_data(port); - - if (port->tty) { - int val = 0; - if (priv->dtr_state) - val |= 0x01; - if (priv->rts_state) - val |= 0x02; - - return usb_control_msg(serial->dev, - usb_rcvctrlpipe(serial->dev, 0), - 0x22, 0x21, val, 0, NULL, 0, - USB_CTRL_SET_TIMEOUT); - } - - return 0; -} - -static void airprime_read_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - unsigned char *data = urb->transfer_buffer; - struct tty_struct *tty; - int result; - int status = urb->status; - - dbg("%s - port %d", __func__, port->number); - - if (status) { - dbg("%s - nonzero read bulk status received: %d", - __func__, status); - return; - } - usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, data); - - tty = port->tty; - if (tty && urb->actual_length) { - tty_insert_flip_string(tty, data, urb->actual_length); - tty_flip_buffer_push(tty); - } - - result = usb_submit_urb(urb, GFP_ATOMIC); - if (result) - dev_err(&port->dev, - "%s - failed resubmitting read urb, error %d\n", - __func__, result); - return; -} - -static void airprime_write_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - struct airprime_private *priv = usb_get_serial_port_data(port); - int status = urb->status; - unsigned long flags; - - dbg("%s - port %d", __func__, port->number); - - /* free up the transfer buffer, as usb_free_urb() does not do this */ - kfree(urb->transfer_buffer); - - if (status) - dbg("%s - nonzero write bulk status received: %d", - __func__, status); - spin_lock_irqsave(&priv->lock, flags); - --priv->outstanding_urbs; - spin_unlock_irqrestore(&priv->lock, flags); - - usb_serial_port_softint(port); -} - -static int airprime_open(struct usb_serial_port *port, struct file *filp) -{ - struct airprime_private *priv = usb_get_serial_port_data(port); - struct usb_serial *serial = port->serial; - struct urb *urb; - char *buffer = NULL; - int i; - int result = 0; - - dbg("%s - port %d", __func__, port->number); - - /* initialize our private data structure if it isn't already created */ - if (!priv) { - priv = kzalloc(sizeof(*priv), GFP_KERNEL); - if (!priv) { - result = -ENOMEM; - goto out; - } - spin_lock_init(&priv->lock); - usb_set_serial_port_data(port, priv); - } - - /* Set some sane defaults */ - priv->rts_state = 1; - priv->dtr_state = 1; - - for (i = 0; i < NUM_READ_URBS; ++i) { - buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!buffer) { - dev_err(&port->dev, "%s - out of memory.\n", - __func__); - result = -ENOMEM; - goto errout; - } - urb = usb_alloc_urb(0, GFP_KERNEL); - if (!urb) { - kfree(buffer); - dev_err(&port->dev, "%s - no more urbs?\n", - __func__); - result = -ENOMEM; - goto errout; - } - usb_fill_bulk_urb(urb, serial->dev, - usb_rcvbulkpipe(serial->dev, - port->bulk_out_endpointAddress), - buffer, buffer_size, - airprime_read_bulk_callback, port); - result = usb_submit_urb(urb, GFP_KERNEL); - if (result) { - usb_free_urb(urb); - kfree(buffer); - dev_err(&port->dev, - "%s - failed submitting read urb %d for port %d, error %d\n", - __func__, i, port->number, result); - goto errout; - } - /* remember this urb so we can kill it when the - port is closed */ - priv->read_urbp[i] = urb; - } - - airprime_send_setup(port); - - goto out; - - errout: - /* some error happened, cancel any submitted urbs and clean up - anything that got allocated successfully */ - - while (i-- != 0) { - urb = priv->read_urbp[i]; - buffer = urb->transfer_buffer; - usb_kill_urb(urb); - usb_free_urb(urb); - kfree(buffer); - } - - out: - return result; -} - -static void airprime_close(struct usb_serial_port *port, struct file *filp) -{ - struct airprime_private *priv = usb_get_serial_port_data(port); - int i; - - dbg("%s - port %d", __func__, port->number); - - priv->rts_state = 0; - priv->dtr_state = 0; - - mutex_lock(&port->serial->disc_mutex); - if (!port->serial->disconnected) - airprime_send_setup(port); - mutex_unlock(&port->serial->disc_mutex); - - for (i = 0; i < NUM_READ_URBS; ++i) { - usb_kill_urb(priv->read_urbp[i]); - kfree(priv->read_urbp[i]->transfer_buffer); - usb_free_urb(priv->read_urbp[i]); - } - - /* free up private structure */ - kfree(priv); - usb_set_serial_port_data(port, NULL); -} - -static int airprime_write(struct usb_serial_port *port, - const unsigned char *buf, int count) -{ - struct airprime_private *priv = usb_get_serial_port_data(port); - struct usb_serial *serial = port->serial; - struct urb *urb; - unsigned char *buffer; - unsigned long flags; - int status; - dbg("%s - port %d", __func__, port->number); - - spin_lock_irqsave(&priv->lock, flags); - if (priv->outstanding_urbs > NUM_WRITE_URBS) { - spin_unlock_irqrestore(&priv->lock, flags); - dbg("%s - write limit hit\n", __func__); - return 0; - } - spin_unlock_irqrestore(&priv->lock, flags); - buffer = kmalloc(count, GFP_ATOMIC); - if (!buffer) { - dev_err(&port->dev, "out of memory\n"); - return -ENOMEM; - } - urb = usb_alloc_urb(0, GFP_ATOMIC); - if (!urb) { - dev_err(&port->dev, "no more free urbs\n"); - kfree(buffer); - return -ENOMEM; - } - memcpy(buffer, buf, count); - - usb_serial_debug_data(debug, &port->dev, __func__, count, buffer); - - usb_fill_bulk_urb(urb, serial->dev, - usb_sndbulkpipe(serial->dev, - port->bulk_out_endpointAddress), - buffer, count, - airprime_write_bulk_callback, port); - - /* send it down the pipe */ - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status) { - dev_err(&port->dev, - "%s - usb_submit_urb(write bulk) failed with status = %d\n", - __func__, status); - count = status; - kfree(buffer); - } else { - spin_lock_irqsave(&priv->lock, flags); - ++priv->outstanding_urbs; - spin_unlock_irqrestore(&priv->lock, flags); - } - /* we are done with this urb, so let the host driver - * really free it when it is finished with it */ - usb_free_urb(urb); - return count; -} - -static struct usb_driver airprime_driver = { - .name = "airprime", - .probe = usb_serial_probe, - .disconnect = usb_serial_disconnect, - .id_table = id_table, - .no_dynamic_id = 1, -}; - -static struct usb_serial_driver airprime_device = { - .driver = { - .owner = THIS_MODULE, - .name = "airprime", - }, - .usb_driver = &airprime_driver, - .id_table = id_table, - .open = airprime_open, - .close = airprime_close, - .write = airprime_write, -}; - -static int __init airprime_init(void) -{ - int retval; - - airprime_device.num_ports = endpoints; - if (endpoints < 0 || endpoints >= MAX_BULK_EPS) - airprime_device.num_ports = NUM_BULK_EPS; - - retval = usb_serial_register(&airprime_device); - if (retval) - return retval; - retval = usb_register(&airprime_driver); - if (retval) - usb_serial_deregister(&airprime_device); - return retval; -} - -static void __exit airprime_exit(void) -{ - dbg("%s", __func__); - - usb_deregister(&airprime_driver); - usb_serial_deregister(&airprime_device); -} - -module_init(airprime_init); -module_exit(airprime_exit); -MODULE_LICENSE("GPL"); - -module_param(debug, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Debug enabled"); -module_param(buffer_size, int, 0); -MODULE_PARM_DESC(buffer_size, - "Size of the transfer buffers in bytes (default 4096)"); -module_param(endpoints, int, 0); -MODULE_PARM_DESC(endpoints, "Number of bulk EPs to configure (default 3)"); diff --git a/drivers/usb/serial/cp2101.c b/drivers/usb/serial/cp2101.c index f5b57b196c5..2bc5576c443 100644 --- a/drivers/usb/serial/cp2101.c +++ b/drivers/usb/serial/cp2101.c @@ -365,8 +365,8 @@ static void cp2101_close (struct usb_serial_port *port, struct file * filp) static void cp2101_get_termios (struct usb_serial_port *port) { unsigned int cflag, modem_ctl[4]; - int baud; - int bits; + unsigned int baud; + unsigned int bits; dbg("%s - port %d", __func__, port->number); @@ -498,7 +498,7 @@ static void cp2101_set_termios (struct usb_serial_port *port, struct ktermios *old_termios) { unsigned int cflag, old_cflag; - int baud=0, bits; + unsigned int baud = 0, bits; unsigned int modem_ctl[4]; dbg("%s - port %d", __func__, port->number); @@ -654,7 +654,7 @@ static void cp2101_set_termios (struct usb_serial_port *port, static int cp2101_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear) { - int control = 0; + unsigned int control = 0; dbg("%s - port %d", __func__, port->number); @@ -683,7 +683,8 @@ static int cp2101_tiocmset (struct usb_serial_port *port, struct file *file, static int cp2101_tiocmget (struct usb_serial_port *port, struct file *file) { - int control, result; + unsigned int control; + int result; dbg("%s - port %d", __func__, port->number); @@ -703,7 +704,7 @@ static int cp2101_tiocmget (struct usb_serial_port *port, struct file *file) static void cp2101_break_ctl (struct usb_serial_port *port, int break_state) { - int state; + unsigned int state; dbg("%s - port %d", __func__, port->number); if (break_state == 0) diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c index 04a56f300ea..28bc6fcf44f 100644 --- a/drivers/usb/serial/digi_acceleport.c +++ b/drivers/usb/serial/digi_acceleport.c @@ -229,8 +229,6 @@ * in case a wake up is lost. * - Following Documentation/DocBook/kernel-locking.pdf no spin locks * are held when calling copy_to/from_user or printk. -* -* $Id: digi_acceleport.c,v 1.80.1.2 2000/11/02 05:45:08 root Exp $ */ #include <linux/kernel.h> @@ -573,6 +571,7 @@ static struct usb_serial_driver digi_acceleport_4_device = { static long cond_wait_interruptible_timeout_irqrestore( wait_queue_head_t *q, long timeout, spinlock_t *lock, unsigned long flags) +__releases(lock) { DEFINE_WAIT(wait); diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 61daea3f7b2..a58822a14a8 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -18,8 +18,8 @@ * * Version history: * - * July 11, 2002 Removed 4 port device structure since all TI UMP - * chips have only 2 ports + * July 11, 2002 Removed 4 port device structure since all TI UMP + * chips have only 2 ports * David Iacovelli (davidi@ionetworks.com) * */ @@ -38,7 +38,7 @@ #include <linux/serial.h> #include <linux/ioctl.h> #include <linux/firmware.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/usb.h> #include <linux/usb/serial.h> @@ -57,18 +57,19 @@ struct edgeport_uart_buf_desc { - __u32 count; // Number of bytes currently in buffer + __u32 count; /* Number of bytes currently in buffer */ }; /* different hardware types */ #define HARDWARE_TYPE_930 0 #define HARDWARE_TYPE_TIUMP 1 -// IOCTL_PRIVATE_TI_GET_MODE Definitions -#define TI_MODE_CONFIGURING 0 // Device has not entered start device -#define TI_MODE_BOOT 1 // Staying in boot mode -#define TI_MODE_DOWNLOAD 2 // Made it to download mode -#define TI_MODE_TRANSITIONING 3 // Currently in boot mode but transitioning to download mode +/* IOCTL_PRIVATE_TI_GET_MODE Definitions */ +#define TI_MODE_CONFIGURING 0 /* Device has not entered start device */ +#define TI_MODE_BOOT 1 /* Staying in boot mode */ +#define TI_MODE_DOWNLOAD 2 /* Made it to download mode */ +#define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but + transitioning to download mode */ /* read urb state */ #define EDGE_READ_URB_RUNNING 0 @@ -82,10 +83,9 @@ struct edgeport_uart_buf_desc { /* Product information read from the Edgeport */ -struct product_info -{ - int TiMode; // Current TI Mode - __u8 hardware_type; // Type of hardware +struct product_info { + int TiMode; /* Current TI Mode */ + __u8 hardware_type; /* Type of hardware */ } __attribute__((packed)); /* circular buffer */ @@ -116,7 +116,7 @@ struct edgeport_port { happen */ struct edgeport_serial *edge_serial; struct usb_serial_port *port; - __u8 bUartMode; /* Port type, 0: RS232, etc. */ + __u8 bUartMode; /* Port type, 0: RS232, etc. */ spinlock_t ep_lock; int ep_read_urb_state; int ep_write_urb_in_use; @@ -125,8 +125,9 @@ struct edgeport_port { struct edgeport_serial { struct product_info product_info; - u8 TI_I2C_Type; // Type of I2C in UMP - u8 TiReadI2C; // Set to TRUE if we have read the I2c in Boot Mode + u8 TI_I2C_Type; /* Type of I2C in UMP */ + u8 TiReadI2C; /* Set to TRUE if we have read the + I2c in Boot Mode */ struct mutex es_lock; int num_ports_open; struct usb_serial *serial; @@ -214,7 +215,7 @@ static struct usb_device_id id_table_combined [] = { { } }; -MODULE_DEVICE_TABLE (usb, id_table_combined); +MODULE_DEVICE_TABLE(usb, id_table_combined); static struct usb_driver io_driver = { .name = "io_ti", @@ -231,19 +232,19 @@ static unsigned short OperationalBuildNumber; static int debug; -static int TIStayInBootMode = 0; static int low_latency = EDGE_LOW_LATENCY; static int closing_wait = EDGE_CLOSING_WAIT; -static int ignore_cpu_rev = 0; -static int default_uart_mode = 0; /* RS232 */ - +static int ignore_cpu_rev; +static int default_uart_mode; /* RS232 */ -static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length); +static void edge_tty_recv(struct device *dev, struct tty_struct *tty, + unsigned char *data, int length); static void stop_read(struct edgeport_port *edge_port); static int restart_read(struct edgeport_port *edge_port); -static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios); +static void edge_set_termios(struct usb_serial_port *port, + struct ktermios *old_termios); static void edge_send(struct usb_serial_port *port); /* sysfs attributes */ @@ -262,87 +263,57 @@ static unsigned int edge_buf_get(struct edge_buf *eb, char *buf, unsigned int count); -static int TIReadVendorRequestSync (struct usb_device *dev, - __u8 request, - __u16 value, - __u16 index, - u8 *data, - int size) +static int ti_vread_sync(struct usb_device *dev, __u8 request, + __u16 value, __u16 index, u8 *data, int size) { int status; - status = usb_control_msg (dev, - usb_rcvctrlpipe(dev, 0), - request, - (USB_TYPE_VENDOR | - USB_RECIP_DEVICE | - USB_DIR_IN), - value, - index, - data, - size, - 1000); + status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, + (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), + value, index, data, size, 1000); if (status < 0) return status; if (status != size) { - dbg ("%s - wanted to write %d, but only wrote %d", - __func__, size, status); + dbg("%s - wanted to write %d, but only wrote %d", + __func__, size, status); return -ECOMM; } return 0; } -static int TISendVendorRequestSync (struct usb_device *dev, - __u8 request, - __u16 value, - __u16 index, - u8 *data, - int size) +static int ti_vsend_sync(struct usb_device *dev, __u8 request, + __u16 value, __u16 index, u8 *data, int size) { int status; - status = usb_control_msg (dev, - usb_sndctrlpipe(dev, 0), - request, - (USB_TYPE_VENDOR | - USB_RECIP_DEVICE | - USB_DIR_OUT), - value, - index, - data, - size, - 1000); + status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, + (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), + value, index, data, size, 1000); if (status < 0) return status; if (status != size) { - dbg ("%s - wanted to write %d, but only wrote %d", + dbg("%s - wanted to write %d, but only wrote %d", __func__, size, status); return -ECOMM; } return 0; } -static int TIWriteCommandSync (struct usb_device *dev, __u8 command, +static int send_cmd(struct usb_device *dev, __u8 command, __u8 moduleid, __u16 value, u8 *data, int size) { - return TISendVendorRequestSync (dev, - command, // Request - value, // wValue - moduleid, // wIndex - data, // TransferBuffer - size); // TransferBufferLength - + return ti_vsend_sync(dev, command, value, moduleid, data, size); } /* clear tx/rx buffers and fifo in TI UMP */ -static int TIPurgeDataSync (struct usb_serial_port *port, __u16 mask) +static int purge_port(struct usb_serial_port *port, __u16 mask) { int port_number = port->number - port->serial->minor; - dbg ("%s - port %d, mask %x", __func__, port_number, mask); + dbg("%s - port %d, mask %x", __func__, port_number, mask); - return TIWriteCommandSync (port->serial->dev, + return send_cmd(port->serial->dev, UMPC_PURGE_PORT, (__u8)(UMPM_UART1_PORT + port_number), mask, @@ -351,92 +322,87 @@ static int TIPurgeDataSync (struct usb_serial_port *port, __u16 mask) } /** - * TIReadDownloadMemory - Read edgeport memory from TI chip + * read_download_mem - Read edgeport memory from TI chip * @dev: usb device pointer * @start_address: Device CPU address at which to read * @length: Length of above data * @address_type: Can read both XDATA and I2C * @buffer: pointer to input data buffer */ -static int TIReadDownloadMemory(struct usb_device *dev, int start_address, +static int read_download_mem(struct usb_device *dev, int start_address, int length, __u8 address_type, __u8 *buffer) { int status = 0; __u8 read_length; __be16 be_start_address; - - dbg ("%s - @ %x for %d", __func__, start_address, length); + + dbg("%s - @ %x for %d", __func__, start_address, length); /* Read in blocks of 64 bytes * (TI firmware can't handle more than 64 byte reads) */ while (length) { if (length > 64) - read_length= 64; + read_length = 64; else read_length = (__u8)length; if (read_length > 1) { - dbg ("%s - @ %x for %d", __func__, + dbg("%s - @ %x for %d", __func__, start_address, read_length); } - be_start_address = cpu_to_be16 (start_address); - status = TIReadVendorRequestSync (dev, - UMPC_MEMORY_READ, // Request - (__u16)address_type, // wValue (Address type) - (__force __u16)be_start_address, // wIndex (Address to read) - buffer, // TransferBuffer - read_length); // TransferBufferLength + be_start_address = cpu_to_be16(start_address); + status = ti_vread_sync(dev, UMPC_MEMORY_READ, + (__u16)address_type, + (__force __u16)be_start_address, + buffer, read_length); if (status) { - dbg ("%s - ERROR %x", __func__, status); + dbg("%s - ERROR %x", __func__, status); return status; } - if (read_length > 1) { + if (read_length > 1) usb_serial_debug_data(debug, &dev->dev, __func__, read_length, buffer); - } /* Update pointers/length */ start_address += read_length; buffer += read_length; length -= read_length; } - + return status; } -static int TIReadRam (struct usb_device *dev, int start_address, int length, __u8 *buffer) +static int read_ram(struct usb_device *dev, int start_address, + int length, __u8 *buffer) { - return TIReadDownloadMemory (dev, - start_address, - length, - DTK_ADDR_SPACE_XDATA, - buffer); + return read_download_mem(dev, start_address, length, + DTK_ADDR_SPACE_XDATA, buffer); } /* Read edgeport memory to a given block */ -static int TIReadBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 * buffer) +static int read_boot_mem(struct edgeport_serial *serial, + int start_address, int length, __u8 *buffer) { int status = 0; int i; - for (i=0; i< length; i++) { - status = TIReadVendorRequestSync (serial->serial->dev, - UMPC_MEMORY_READ, // Request - serial->TI_I2C_Type, // wValue (Address type) - (__u16)(start_address+i), // wIndex - &buffer[i], // TransferBuffer - 0x01); // TransferBufferLength + for (i = 0; i < length; i++) { + status = ti_vread_sync(serial->serial->dev, + UMPC_MEMORY_READ, serial->TI_I2C_Type, + (__u16)(start_address+i), &buffer[i], 0x01); if (status) { - dbg ("%s - ERROR %x", __func__, status); + dbg("%s - ERROR %x", __func__, status); return status; } } - dbg ("%s - start_address = %x, length = %d", __func__, start_address, length); - usb_serial_debug_data(debug, &serial->serial->dev->dev, __func__, length, buffer); + dbg("%s - start_address = %x, length = %d", + __func__, start_address, length); + usb_serial_debug_data(debug, &serial->serial->dev->dev, + __func__, length, buffer); serial->TiReadI2C = 1; @@ -444,7 +410,8 @@ static int TIReadBootMemory (struct edgeport_serial *serial, int start_address, } /* Write given block to TI EPROM memory */ -static int TIWriteBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer) +static int write_boot_mem(struct edgeport_serial *serial, + int start_address, int length, __u8 *buffer) { int status = 0; int i; @@ -452,57 +419,58 @@ static int TIWriteBootMemory (struct edgeport_serial *serial, int start_address, /* Must do a read before write */ if (!serial->TiReadI2C) { - status = TIReadBootMemory(serial, 0, 1, &temp); + status = read_boot_mem(serial, 0, 1, &temp); if (status) return status; } - for (i=0; i < length; ++i) { - status = TISendVendorRequestSync (serial->serial->dev, - UMPC_MEMORY_WRITE, // Request - buffer[i], // wValue - (__u16)(i+start_address), // wIndex - NULL, // TransferBuffer - 0); // TransferBufferLength + for (i = 0; i < length; ++i) { + status = ti_vsend_sync(serial->serial->dev, + UMPC_MEMORY_WRITE, buffer[i], + (__u16)(i + start_address), NULL, 0); if (status) return status; } - dbg ("%s - start_sddr = %x, length = %d", __func__, start_address, length); - usb_serial_debug_data(debug, &serial->serial->dev->dev, __func__, length, buffer); + dbg("%s - start_sddr = %x, length = %d", + __func__, start_address, length); + usb_serial_debug_data(debug, &serial->serial->dev->dev, + __func__, length, buffer); return status; } /* Write edgeport I2C memory to TI chip */ -static int TIWriteDownloadI2C (struct edgeport_serial *serial, int start_address, int length, __u8 address_type, __u8 *buffer) +static int write_i2c_mem(struct edgeport_serial *serial, + int start_address, int length, __u8 address_type, __u8 *buffer) { int status = 0; int write_length; __be16 be_start_address; /* We can only send a maximum of 1 aligned byte page at a time */ - + /* calulate the number of bytes left in the first page */ - write_length = EPROM_PAGE_SIZE - (start_address & (EPROM_PAGE_SIZE - 1)); + write_length = EPROM_PAGE_SIZE - + (start_address & (EPROM_PAGE_SIZE - 1)); if (write_length > length) write_length = length; - dbg ("%s - BytesInFirstPage Addr = %x, length = %d", __func__, start_address, write_length); - usb_serial_debug_data(debug, &serial->serial->dev->dev, __func__, write_length, buffer); + dbg("%s - BytesInFirstPage Addr = %x, length = %d", + __func__, start_address, write_length); + usb_serial_debug_data(debug, &serial->serial->dev->dev, + __func__, write_length, buffer); /* Write first page */ - be_start_address = cpu_to_be16 (start_address); - status = TISendVendorRequestSync (serial->serial->dev, - UMPC_MEMORY_WRITE, // Request - (__u16)address_type, // wValue - (__force __u16)be_start_address, // wIndex - buffer, // TransferBuffer - write_length); + be_start_address = cpu_to_be16(start_address); + status = ti_vsend_sync(serial->serial->dev, + UMPC_MEMORY_WRITE, (__u16)address_type, + (__force __u16)be_start_address, + buffer, write_length); if (status) { - dbg ("%s - ERROR %d", __func__, status); + dbg("%s - ERROR %d", __func__, status); return status; } @@ -510,29 +478,31 @@ static int TIWriteDownloadI2C (struct edgeport_serial *serial, int start_address start_address += write_length; buffer += write_length; - /* We should be aligned now -- can write max page size bytes at a time */ + /* We should be aligned now -- can write + max page size bytes at a time */ while (length) { if (length > EPROM_PAGE_SIZE) write_length = EPROM_PAGE_SIZE; else write_length = length; - dbg ("%s - Page Write Addr = %x, length = %d", __func__, start_address, write_length); - usb_serial_debug_data(debug, &serial->serial->dev->dev, __func__, write_length, buffer); + dbg("%s - Page Write Addr = %x, length = %d", + __func__, start_address, write_length); + usb_serial_debug_data(debug, &serial->serial->dev->dev, + __func__, write_length, buffer); /* Write next page */ - be_start_address = cpu_to_be16 (start_address); - status = TISendVendorRequestSync (serial->serial->dev, - UMPC_MEMORY_WRITE, // Request - (__u16)address_type, // wValue - (__force __u16)be_start_address, // wIndex - buffer, // TransferBuffer - write_length); // TransferBufferLength + be_start_address = cpu_to_be16(start_address); + status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, + (__u16)address_type, + (__force __u16)be_start_address, + buffer, write_length); if (status) { - dev_err (&serial->serial->dev->dev, "%s - ERROR %d\n", __func__, status); + dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n", + __func__, status); return status; } - + length -= write_length; start_address += write_length; buffer += write_length; @@ -541,25 +511,25 @@ static int TIWriteDownloadI2C (struct edgeport_serial *serial, int start_address } /* Examine the UMP DMA registers and LSR - * + * * Check the MSBit of the X and Y DMA byte count registers. * A zero in this bit indicates that the TX DMA buffers are empty * then check the TX Empty bit in the UART. */ -static int TIIsTxActive (struct edgeport_port *port) +static int tx_active(struct edgeport_port *port) { int status; struct out_endpoint_desc_block *oedb; __u8 *lsr; int bytes_left = 0; - oedb = kmalloc (sizeof (* oedb), GFP_KERNEL); + oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); if (!oedb) { - dev_err (&port->port->dev, "%s - out of memory\n", __func__); + dev_err(&port->port->dev, "%s - out of memory\n", __func__); return -ENOMEM; } - lsr = kmalloc (1, GFP_KERNEL); /* Sigh, that's right, just one byte, + lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, as not all platforms can do DMA from stack */ if (!lsr) { @@ -567,43 +537,39 @@ static int TIIsTxActive (struct edgeport_port *port) return -ENOMEM; } /* Read the DMA Count Registers */ - status = TIReadRam (port->port->serial->dev, - port->dma_address, - sizeof( *oedb), - (void *)oedb); - + status = read_ram(port->port->serial->dev, port->dma_address, + sizeof(*oedb), (void *)oedb); if (status) goto exit_is_tx_active; - dbg ("%s - XByteCount 0x%X", __func__, oedb->XByteCount); + dbg("%s - XByteCount 0x%X", __func__, oedb->XByteCount); /* and the LSR */ - status = TIReadRam (port->port->serial->dev, - port->uart_base + UMPMEM_OFFS_UART_LSR, - 1, - lsr); + status = read_ram(port->port->serial->dev, + port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); if (status) goto exit_is_tx_active; - dbg ("%s - LSR = 0x%X", __func__, *lsr); - + dbg("%s - LSR = 0x%X", __func__, *lsr); + /* If either buffer has data or we are transmitting then return TRUE */ - if ((oedb->XByteCount & 0x80 ) != 0 ) + if ((oedb->XByteCount & 0x80) != 0) bytes_left += 64; - if ((*lsr & UMP_UART_LSR_TX_MASK ) == 0 ) + if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) bytes_left += 1; /* We return Not Active if we get any kind of error */ exit_is_tx_active: - dbg ("%s - return %d", __func__, bytes_left ); + dbg("%s - return %d", __func__, bytes_left); kfree(lsr); kfree(oedb); return bytes_left; } -static void TIChasePort(struct edgeport_port *port, unsigned long timeout, int flush) +static void chase_port(struct edgeport_port *port, unsigned long timeout, + int flush) { int baud_rate; struct tty_struct *tty = port->port->tty; @@ -611,7 +577,7 @@ static void TIChasePort(struct edgeport_port *port, unsigned long timeout, int f unsigned long flags; if (!timeout) - timeout = (HZ*EDGE_CLOSING_WAIT)/100; + timeout = (HZ * EDGE_CLOSING_WAIT)/100; /* wait for data to drain from the buffer */ spin_lock_irqsave(&port->ep_lock, flags); @@ -621,7 +587,8 @@ static void TIChasePort(struct edgeport_port *port, unsigned long timeout, int f set_current_state(TASK_INTERRUPTIBLE); if (edge_buf_data_avail(port->ep_out_buf) == 0 || timeout == 0 || signal_pending(current) - || !usb_get_intfdata(port->port->serial->interface)) /* disconnect */ + || !usb_get_intfdata(port->port->serial->interface)) + /* disconnect */ break; spin_unlock_irqrestore(&port->ep_lock, flags); timeout = schedule_timeout(timeout); @@ -636,8 +603,9 @@ static void TIChasePort(struct edgeport_port *port, unsigned long timeout, int f /* wait for data to drain from the device */ timeout += jiffies; while ((long)(jiffies - timeout) < 0 && !signal_pending(current) - && usb_get_intfdata(port->port->serial->interface)) { /* not disconnected */ - if (!TIIsTxActive(port)) + && usb_get_intfdata(port->port->serial->interface)) { + /* not disconnected */ + if (!tx_active(port)) break; msleep(10); } @@ -647,72 +615,72 @@ static void TIChasePort(struct edgeport_port *port, unsigned long timeout, int f return; /* wait one more character time, based on baud rate */ - /* (TIIsTxActive doesn't seem to wait for the last byte) */ - if ((baud_rate=port->baud_rate) == 0) + /* (tx_active doesn't seem to wait for the last byte) */ + baud_rate = port->baud_rate; + if (baud_rate == 0) baud_rate = 50; msleep(max(1, DIV_ROUND_UP(10000, baud_rate))); } -static int TIChooseConfiguration (struct usb_device *dev) +static int choose_config(struct usb_device *dev) { - // There may be multiple configurations on this device, in which case - // we would need to read and parse all of them to find out which one - // we want. However, we just support one config at this point, - // configuration # 1, which is Config Descriptor 0. + /* + * There may be multiple configurations on this device, in which case + * we would need to read and parse all of them to find out which one + * we want. However, we just support one config at this point, + * configuration # 1, which is Config Descriptor 0. + */ - dbg ("%s - Number of Interfaces = %d", __func__, dev->config->desc.bNumInterfaces); - dbg ("%s - MAX Power = %d", __func__, dev->config->desc.bMaxPower*2); + dbg("%s - Number of Interfaces = %d", + __func__, dev->config->desc.bNumInterfaces); + dbg("%s - MAX Power = %d", + __func__, dev->config->desc.bMaxPower * 2); if (dev->config->desc.bNumInterfaces != 1) { - dev_err (&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); + dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", + __func__); return -ENODEV; } return 0; } -static int TIReadRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer) +static int read_rom(struct edgeport_serial *serial, + int start_address, int length, __u8 *buffer) { int status; if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { - status = TIReadDownloadMemory (serial->serial->dev, + status = read_download_mem(serial->serial->dev, start_address, length, serial->TI_I2C_Type, buffer); } else { - status = TIReadBootMemory (serial, - start_address, - length, - buffer); + status = read_boot_mem(serial, start_address, length, + buffer); } - return status; } -static int TIWriteRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer) +static int write_rom(struct edgeport_serial *serial, int start_address, + int length, __u8 *buffer) { if (serial->product_info.TiMode == TI_MODE_BOOT) - return TIWriteBootMemory (serial, - start_address, - length, - buffer); + return write_boot_mem(serial, start_address, length, + buffer); if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) - return TIWriteDownloadI2C (serial, - start_address, - length, - serial->TI_I2C_Type, - buffer); - + return write_i2c_mem(serial, start_address, length, + serial->TI_I2C_Type, buffer); return -EINVAL; } /* Read a descriptor header from I2C based on type */ -static int TIGetDescriptorAddress (struct edgeport_serial *serial, int desc_type, struct ti_i2c_desc *rom_desc) +static int get_descriptor_addr(struct edgeport_serial *serial, + int desc_type, struct ti_i2c_desc *rom_desc) { int start_address; int status; @@ -720,41 +688,42 @@ static int TIGetDescriptorAddress (struct edgeport_serial *serial, int desc_type /* Search for requested descriptor in I2C */ start_address = 2; do { - status = TIReadRom (serial, + status = read_rom(serial, start_address, sizeof(struct ti_i2c_desc), - (__u8 *)rom_desc ); + (__u8 *)rom_desc); if (status) return 0; if (rom_desc->Type == desc_type) return start_address; - start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size; + start_address = start_address + sizeof(struct ti_i2c_desc) + + rom_desc->Size; } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); - + return 0; } /* Validate descriptor checksum */ -static int ValidChecksum(struct ti_i2c_desc *rom_desc, __u8 *buffer) +static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) { __u16 i; __u8 cs = 0; - for (i=0; i < rom_desc->Size; i++) { + for (i = 0; i < rom_desc->Size; i++) cs = (__u8)(cs + buffer[i]); - } + if (cs != rom_desc->CheckSum) { - dbg ("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); + dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); return -EINVAL; } return 0; } /* Make sure that the I2C image is good */ -static int TiValidateI2cImage (struct edgeport_serial *serial) +static int check_i2c_image(struct edgeport_serial *serial) { struct device *dev = &serial->serial->dev->dev; int status = 0; @@ -763,120 +732,124 @@ static int TiValidateI2cImage (struct edgeport_serial *serial) __u8 *buffer; __u16 ttype; - rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL); + rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); if (!rom_desc) { - dev_err (dev, "%s - out of memory\n", __func__); + dev_err(dev, "%s - out of memory\n", __func__); return -ENOMEM; } - buffer = kmalloc (TI_MAX_I2C_SIZE, GFP_KERNEL); + buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); if (!buffer) { - dev_err (dev, "%s - out of memory when allocating buffer\n", __func__); - kfree (rom_desc); + dev_err(dev, "%s - out of memory when allocating buffer\n", + __func__); + kfree(rom_desc); return -ENOMEM; } - // Read the first byte (Signature0) must be 0x52 or 0x10 - status = TIReadRom (serial, 0, 1, buffer); + /* Read the first byte (Signature0) must be 0x52 or 0x10 */ + status = read_rom(serial, 0, 1, buffer); if (status) - goto ExitTiValidateI2cImage; + goto out; if (*buffer != UMP5152 && *buffer != UMP3410) { - dev_err (dev, "%s - invalid buffer signature\n", __func__); + dev_err(dev, "%s - invalid buffer signature\n", __func__); status = -ENODEV; - goto ExitTiValidateI2cImage; + goto out; } do { - // Validate the I2C - status = TIReadRom (serial, + /* Validate the I2C */ + status = read_rom(serial, start_address, sizeof(struct ti_i2c_desc), (__u8 *)rom_desc); if (status) break; - if ((start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size) > TI_MAX_I2C_SIZE) { + if ((start_address + sizeof(struct ti_i2c_desc) + + rom_desc->Size) > TI_MAX_I2C_SIZE) { status = -ENODEV; - dbg ("%s - structure too big, erroring out.", __func__); + dbg("%s - structure too big, erroring out.", __func__); break; } - dbg ("%s Type = 0x%x", __func__, rom_desc->Type); + dbg("%s Type = 0x%x", __func__, rom_desc->Type); - // Skip type 2 record + /* Skip type 2 record */ ttype = rom_desc->Type & 0x0f; - if ( ttype != I2C_DESC_TYPE_FIRMWARE_BASIC - && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO ) { - // Read the descriptor data - status = TIReadRom(serial, - start_address+sizeof(struct ti_i2c_desc), - rom_desc->Size, - buffer); + if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC + && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { + /* Read the descriptor data */ + status = read_rom(serial, start_address + + sizeof(struct ti_i2c_desc), + rom_desc->Size, buffer); if (status) break; - status = ValidChecksum(rom_desc, buffer); + status = valid_csum(rom_desc, buffer); if (status) break; } - start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size; + start_address = start_address + sizeof(struct ti_i2c_desc) + + rom_desc->Size; - } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && (start_address < TI_MAX_I2C_SIZE)); + } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && + (start_address < TI_MAX_I2C_SIZE)); - if ((rom_desc->Type != I2C_DESC_TYPE_ION) || (start_address > TI_MAX_I2C_SIZE)) + if ((rom_desc->Type != I2C_DESC_TYPE_ION) || + (start_address > TI_MAX_I2C_SIZE)) status = -ENODEV; -ExitTiValidateI2cImage: - kfree (buffer); - kfree (rom_desc); +out: + kfree(buffer); + kfree(rom_desc); return status; } -static int TIReadManufDescriptor (struct edgeport_serial *serial, __u8 *buffer) +static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) { int status; int start_address; struct ti_i2c_desc *rom_desc; struct edge_ti_manuf_descriptor *desc; - rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL); + rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); if (!rom_desc) { - dev_err (&serial->serial->dev->dev, "%s - out of memory\n", __func__); + dev_err(&serial->serial->dev->dev, "%s - out of memory\n", + __func__); return -ENOMEM; } - start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_ION, rom_desc); + start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, + rom_desc); if (!start_address) { - dbg ("%s - Edge Descriptor not found in I2C", __func__); + dbg("%s - Edge Descriptor not found in I2C", __func__); status = -ENODEV; goto exit; } - // Read the descriptor data - status = TIReadRom (serial, - start_address+sizeof(struct ti_i2c_desc), - rom_desc->Size, - buffer); + /* Read the descriptor data */ + status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), + rom_desc->Size, buffer); if (status) goto exit; - - status = ValidChecksum(rom_desc, buffer); - + + status = valid_csum(rom_desc, buffer); + desc = (struct edge_ti_manuf_descriptor *)buffer; - dbg ( "%s - IonConfig 0x%x", __func__, desc->IonConfig ); - dbg ( "%s - Version %d", __func__, desc->Version ); - dbg ( "%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev ); - dbg ( "%s - NumPorts %d", __func__, desc->NumPorts ); - dbg ( "%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts ); - dbg ( "%s - TotalPorts %d", __func__, desc->TotalPorts ); + dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig); + dbg("%s - Version %d", __func__, desc->Version); + dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev); + dbg("%s - NumPorts %d", __func__, desc->NumPorts); + dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts); + dbg("%s - TotalPorts %d", __func__, desc->TotalPorts); exit: - kfree (rom_desc); + kfree(rom_desc); return status; } /* Build firmware header used for firmware update */ -static int BuildI2CFirmwareHeader (__u8 *header, struct device *dev) +static int build_i2c_fw_hdr(__u8 *header, struct device *dev) { __u8 *buffer; int buffer_size; @@ -889,24 +862,28 @@ static int BuildI2CFirmwareHeader (__u8 *header, struct device *dev) const struct firmware *fw; const char *fw_name = "edgeport/down3.bin"; - // In order to update the I2C firmware we must change the type 2 record to type 0xF2. - // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver - // will download the latest firmware (padded to 15.5k) into the UMP ram. - // And finally when the device comes back up in download mode the driver will cause - // the new firmware to be copied from the UMP Ram to I2C and the firmware will update - // the record type from 0xf2 to 0x02. - - // Allocate a 15.5k buffer + 2 bytes for version number (Firmware Record) - buffer_size = (((1024 * 16) - 512 )+ sizeof(struct ti_i2c_firmware_rec)); - - buffer = kmalloc (buffer_size, GFP_KERNEL); + /* In order to update the I2C firmware we must change the type 2 record + * to type 0xF2. This will force the UMP to come up in Boot Mode. + * Then while in boot mode, the driver will download the latest + * firmware (padded to 15.5k) into the UMP ram. And finally when the + * device comes back up in download mode the driver will cause the new + * firmware to be copied from the UMP Ram to I2C and the firmware will + * update the record type from 0xf2 to 0x02. + */ + + /* Allocate a 15.5k buffer + 2 bytes for version number + * (Firmware Record) */ + buffer_size = (((1024 * 16) - 512 ) + + sizeof(struct ti_i2c_firmware_rec)); + + buffer = kmalloc(buffer_size, GFP_KERNEL); if (!buffer) { - dev_err (dev, "%s - out of memory\n", __func__); + dev_err(dev, "%s - out of memory\n", __func__); return -ENOMEM; } - + // Set entire image of 0xffs - memset (buffer, 0xff, buffer_size); + memset(buffer, 0xff, buffer_size); err = request_firmware(&fw, fw_name, dev); if (err) { @@ -921,16 +898,16 @@ static int BuildI2CFirmwareHeader (__u8 *header, struct device *dev) OperationalMinorVersion = fw->data[1]; OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); - // Copy version number into firmware record + /* Copy version number into firmware record */ firmware_rec = (struct ti_i2c_firmware_rec *)buffer; firmware_rec->Ver_Major = OperationalMajorVersion; firmware_rec->Ver_Minor = OperationalMinorVersion; - // Pointer to fw_down memory image + /* Pointer to fw_down memory image */ img_header = (struct ti_i2c_image_header *)&fw->data[4]; - memcpy (buffer + sizeof(struct ti_i2c_firmware_rec), + memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), &fw->data[4 + sizeof(struct ti_i2c_image_header)], le16_to_cpu(img_header->Length)); @@ -940,12 +917,12 @@ static int BuildI2CFirmwareHeader (__u8 *header, struct device *dev) cs = (__u8)(cs + buffer[i]); } - kfree (buffer); + kfree(buffer); - // Build new header + /* Build new header */ i2c_header = (struct ti_i2c_desc *)header; firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; - + i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; i2c_header->Size = (__u16)buffer_size; i2c_header->CheckSum = cs; @@ -956,103 +933,100 @@ static int BuildI2CFirmwareHeader (__u8 *header, struct device *dev) } /* Try to figure out what type of I2c we have */ -static int TIGetI2cTypeInBootMode (struct edgeport_serial *serial) +static int i2c_type_bootmode(struct edgeport_serial *serial) { int status; __u8 data; - - // Try to read type 2 - status = TIReadVendorRequestSync (serial->serial->dev, - UMPC_MEMORY_READ, // Request - DTK_ADDR_SPACE_I2C_TYPE_II, // wValue (Address type) - 0, // wIndex - &data, // TransferBuffer - 0x01); // TransferBufferLength + + /* Try to read type 2 */ + status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, + DTK_ADDR_SPACE_I2C_TYPE_II, 0, &data, 0x01); if (status) - dbg ("%s - read 2 status error = %d", __func__, status); + dbg("%s - read 2 status error = %d", __func__, status); else - dbg ("%s - read 2 data = 0x%x", __func__, data); + dbg("%s - read 2 data = 0x%x", __func__, data); if ((!status) && (data == UMP5152 || data == UMP3410)) { - dbg ("%s - ROM_TYPE_II", __func__); + dbg("%s - ROM_TYPE_II", __func__); serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; return 0; } - // Try to read type 3 - status = TIReadVendorRequestSync (serial->serial->dev, - UMPC_MEMORY_READ, // Request - DTK_ADDR_SPACE_I2C_TYPE_III, // wValue (Address type) - 0, // wIndex - &data, // TransferBuffer - 0x01); // TransferBufferLength + /* Try to read type 3 */ + status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, + DTK_ADDR_SPACE_I2C_TYPE_III, 0, &data, 0x01); if (status) - dbg ("%s - read 3 status error = %d", __func__, status); + dbg("%s - read 3 status error = %d", __func__, status); else - dbg ("%s - read 2 data = 0x%x", __func__, data); + dbg("%s - read 2 data = 0x%x", __func__, data); if ((!status) && (data == UMP5152 || data == UMP3410)) { - dbg ("%s - ROM_TYPE_III", __func__); + dbg("%s - ROM_TYPE_III", __func__); serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; return 0; } - dbg ("%s - Unknown", __func__); + dbg("%s - Unknown", __func__); serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; return -ENODEV; } -static int TISendBulkTransferSync (struct usb_serial *serial, void *buffer, int length, int *num_sent) +static int bulk_xfer(struct usb_serial *serial, void *buffer, + int length, int *num_sent) { int status; - status = usb_bulk_msg (serial->dev, - usb_sndbulkpipe(serial->dev, - serial->port[0]->bulk_out_endpointAddress), - buffer, - length, - num_sent, - 1000); + status = usb_bulk_msg(serial->dev, + usb_sndbulkpipe(serial->dev, + serial->port[0]->bulk_out_endpointAddress), + buffer, length, num_sent, 1000); return status; } /* Download given firmware image to the device (IN BOOT MODE) */ -static int TIDownloadCodeImage (struct edgeport_serial *serial, __u8 *image, int image_length) +static int download_code(struct edgeport_serial *serial, __u8 *image, + int image_length) { int status = 0; int pos; int transfer; int done; - // Transfer firmware image + /* Transfer firmware image */ for (pos = 0; pos < image_length; ) { - // Read the next buffer from file + /* Read the next buffer from file */ transfer = image_length - pos; if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; - // Transfer data - status = TISendBulkTransferSync (serial->serial, &image[pos], transfer, &done); + /* Transfer data */ + status = bulk_xfer(serial->serial, &image[pos], + transfer, &done); if (status) break; - // Advance buffer pointer + /* Advance buffer pointer */ pos += done; } return status; } -// FIXME!!! -static int TIConfigureBootDevice (struct usb_device *dev) +/* FIXME!!! */ +static int config_boot_dev(struct usb_device *dev) { return 0; } +static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) +{ + return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); +} + /** * DownloadTIFirmware - Download run-time operating firmware to the TI5052 - * + * * This routine downloads the main operating code into the TI5052, using the * boot code already burned into E2PROM or ROM. */ -static int TIDownloadFirmware (struct edgeport_serial *serial) +static int download_fw(struct edgeport_serial *serial) { struct device *dev = &serial->serial->dev->dev; int status = 0; @@ -1071,22 +1045,25 @@ static int TIDownloadFirmware (struct edgeport_serial *serial) /* Default to type 2 i2c */ serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; - status = TIChooseConfiguration (serial->serial->dev); + status = choose_config(serial->serial->dev); if (status) return status; interface = &serial->serial->interface->cur_altsetting->desc; if (!interface) { - dev_err (dev, "%s - no interface set, error!\n", __func__); + dev_err(dev, "%s - no interface set, error!\n", __func__); return -ENODEV; } - // Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING - // if we have more than one endpoint we are definitely in download mode + /* + * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING + * if we have more than one endpoint we are definitely in download + * mode + */ if (interface->bNumEndpoints > 1) serial->product_info.TiMode = TI_MODE_DOWNLOAD; else - // Otherwise we will remain in configuring mode + /* Otherwise we will remain in configuring mode */ serial->product_info.TiMode = TI_MODE_CONFIGURING; /********************************************************************/ @@ -1097,256 +1074,273 @@ static int TIDownloadFirmware (struct edgeport_serial *serial) dbg("%s - RUNNING IN DOWNLOAD MODE", __func__); - status = TiValidateI2cImage (serial); + status = check_i2c_image(serial); if (status) { dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__); return status; } - + /* Validate Hardware version number * Read Manufacturing Descriptor from TI Based Edgeport */ - ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL); + ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); if (!ti_manuf_desc) { - dev_err (dev, "%s - out of memory.\n", __func__); + dev_err(dev, "%s - out of memory.\n", __func__); return -ENOMEM; } - status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc); + status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); if (status) { - kfree (ti_manuf_desc); + kfree(ti_manuf_desc); return status; } - // Check version number of ION descriptor - if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) { - dbg ( "%s - Wrong CPU Rev %d (Must be 2)", __func__, - TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev)); - kfree (ti_manuf_desc); - return -EINVAL; - } + /* Check version number of ION descriptor */ + if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { + dbg("%s - Wrong CPU Rev %d (Must be 2)", + __func__, ti_cpu_rev(ti_manuf_desc)); + kfree(ti_manuf_desc); + return -EINVAL; + } - rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL); + rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); if (!rom_desc) { - dev_err (dev, "%s - out of memory.\n", __func__); - kfree (ti_manuf_desc); + dev_err(dev, "%s - out of memory.\n", __func__); + kfree(ti_manuf_desc); return -ENOMEM; } - // Search for type 2 record (firmware record) - if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc)) != 0) { + /* Search for type 2 record (firmware record) */ + start_address = get_descriptor_addr(serial, + I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); + if (start_address != 0) { struct ti_i2c_firmware_rec *firmware_version; __u8 record; - dbg ("%s - Found Type FIRMWARE (Type 2) record", __func__); + dbg("%s - Found Type FIRMWARE (Type 2) record", + __func__); - firmware_version = kmalloc (sizeof (*firmware_version), GFP_KERNEL); + firmware_version = kmalloc(sizeof(*firmware_version), + GFP_KERNEL); if (!firmware_version) { - dev_err (dev, "%s - out of memory.\n", __func__); - kfree (rom_desc); - kfree (ti_manuf_desc); + dev_err(dev, "%s - out of memory.\n", __func__); + kfree(rom_desc); + kfree(ti_manuf_desc); return -ENOMEM; } - // Validate version number - // Read the descriptor data - status = TIReadRom (serial, - start_address+sizeof(struct ti_i2c_desc), + /* Validate version number + * Read the descriptor data + */ + status = read_rom(serial, start_address + + sizeof(struct ti_i2c_desc), sizeof(struct ti_i2c_firmware_rec), (__u8 *)firmware_version); if (status) { - kfree (firmware_version); - kfree (rom_desc); - kfree (ti_manuf_desc); + kfree(firmware_version); + kfree(rom_desc); + kfree(ti_manuf_desc); return status; } - // Check version number of download with current version in I2c - download_cur_ver = (firmware_version->Ver_Major << 8) + + /* Check version number of download with current + version in I2c */ + download_cur_ver = (firmware_version->Ver_Major << 8) + (firmware_version->Ver_Minor); download_new_ver = (OperationalMajorVersion << 8) + (OperationalMinorVersion); - dbg ("%s - >>>Firmware Versions Device %d.%d Driver %d.%d", - __func__, - firmware_version->Ver_Major, - firmware_version->Ver_Minor, - OperationalMajorVersion, - OperationalMinorVersion); + dbg("%s - >> FW Versions Device %d.%d Driver %d.%d", + __func__, + firmware_version->Ver_Major, + firmware_version->Ver_Minor, + OperationalMajorVersion, + OperationalMinorVersion); - // Check if we have an old version in the I2C and update if necessary + /* Check if we have an old version in the I2C and + update if necessary */ if (download_cur_ver != download_new_ver) { - dbg ("%s - Update I2C Download from %d.%d to %d.%d", - __func__, - firmware_version->Ver_Major, - firmware_version->Ver_Minor, - OperationalMajorVersion, - OperationalMinorVersion); - - // In order to update the I2C firmware we must change the type 2 record to type 0xF2. - // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver - // will download the latest firmware (padded to 15.5k) into the UMP ram. - // And finally when the device comes back up in download mode the driver will cause - // the new firmware to be copied from the UMP Ram to I2C and the firmware will update - // the record type from 0xf2 to 0x02. - + dbg("%s - Update I2C dld from %d.%d to %d.%d", + __func__, + firmware_version->Ver_Major, + firmware_version->Ver_Minor, + OperationalMajorVersion, + OperationalMinorVersion); + + /* In order to update the I2C firmware we must + * change the type 2 record to type 0xF2. This + * will force the UMP to come up in Boot Mode. + * Then while in boot mode, the driver will + * download the latest firmware (padded to + * 15.5k) into the UMP ram. Finally when the + * device comes back up in download mode the + * driver will cause the new firmware to be + * copied from the UMP Ram to I2C and the + * firmware will update the record type from + * 0xf2 to 0x02. + */ record = I2C_DESC_TYPE_FIRMWARE_BLANK; - // Change the I2C Firmware record type to 0xf2 to trigger an update - status = TIWriteRom (serial, - start_address, - sizeof(record), - &record); + /* Change the I2C Firmware record type to + 0xf2 to trigger an update */ + status = write_rom(serial, start_address, + sizeof(record), &record); if (status) { - kfree (firmware_version); - kfree (rom_desc); - kfree (ti_manuf_desc); + kfree(firmware_version); + kfree(rom_desc); + kfree(ti_manuf_desc); return status; } - // verify the write -- must do this in order for write to - // complete before we do the hardware reset - status = TIReadRom (serial, + /* verify the write -- must do this in order + * for write to complete before we do the + * hardware reset + */ + status = read_rom(serial, start_address, sizeof(record), &record); - if (status) { - kfree (firmware_version); - kfree (rom_desc); - kfree (ti_manuf_desc); + kfree(firmware_version); + kfree(rom_desc); + kfree(ti_manuf_desc); return status; } if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) { - dev_err (dev, "%s - error resetting device\n", __func__); - kfree (firmware_version); - kfree (rom_desc); - kfree (ti_manuf_desc); + dev_err(dev, + "%s - error resetting device\n", + __func__); + kfree(firmware_version); + kfree(rom_desc); + kfree(ti_manuf_desc); return -ENODEV; } - dbg ("%s - HARDWARE RESET", __func__); + dbg("%s - HARDWARE RESET", __func__); - // Reset UMP -- Back to BOOT MODE - status = TISendVendorRequestSync (serial->serial->dev, - UMPC_HARDWARE_RESET, // Request - 0, // wValue - 0, // wIndex - NULL, // TransferBuffer - 0); // TransferBufferLength + /* Reset UMP -- Back to BOOT MODE */ + status = ti_vsend_sync(serial->serial->dev, + UMPC_HARDWARE_RESET, + 0, 0, NULL, 0); - dbg ( "%s - HARDWARE RESET return %d", __func__, status); + dbg("%s - HARDWARE RESET return %d", + __func__, status); /* return an error on purpose. */ - kfree (firmware_version); - kfree (rom_desc); - kfree (ti_manuf_desc); + kfree(firmware_version); + kfree(rom_desc); + kfree(ti_manuf_desc); return -ENODEV; } - kfree (firmware_version); + kfree(firmware_version); } - // Search for type 0xF2 record (firmware blank record) - else if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { - #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + sizeof(struct ti_i2c_firmware_rec)) + /* Search for type 0xF2 record (firmware blank record) */ + else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { +#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ + sizeof(struct ti_i2c_firmware_rec)) __u8 *header; __u8 *vheader; - header = kmalloc (HEADER_SIZE, GFP_KERNEL); + header = kmalloc(HEADER_SIZE, GFP_KERNEL); if (!header) { - dev_err (dev, "%s - out of memory.\n", __func__); - kfree (rom_desc); - kfree (ti_manuf_desc); + dev_err(dev, "%s - out of memory.\n", __func__); + kfree(rom_desc); + kfree(ti_manuf_desc); return -ENOMEM; } - - vheader = kmalloc (HEADER_SIZE, GFP_KERNEL); + + vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); if (!vheader) { - dev_err (dev, "%s - out of memory.\n", __func__); - kfree (header); - kfree (rom_desc); - kfree (ti_manuf_desc); + dev_err(dev, "%s - out of memory.\n", __func__); + kfree(header); + kfree(rom_desc); + kfree(ti_manuf_desc); return -ENOMEM; } - - dbg ("%s - Found Type BLANK FIRMWARE (Type F2) record", __func__); - - // In order to update the I2C firmware we must change the type 2 record to type 0xF2. - // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver - // will download the latest firmware (padded to 15.5k) into the UMP ram. - // And finally when the device comes back up in download mode the driver will cause - // the new firmware to be copied from the UMP Ram to I2C and the firmware will update - // the record type from 0xf2 to 0x02. - status = BuildI2CFirmwareHeader(header, dev); + + dbg("%s - Found Type BLANK FIRMWARE (Type F2) record", + __func__); + + /* + * In order to update the I2C firmware we must change + * the type 2 record to type 0xF2. This will force the + * UMP to come up in Boot Mode. Then while in boot + * mode, the driver will download the latest firmware + * (padded to 15.5k) into the UMP ram. Finally when the + * device comes back up in download mode the driver + * will cause the new firmware to be copied from the + * UMP Ram to I2C and the firmware will update the + * record type from 0xf2 to 0x02. + */ + status = build_i2c_fw_hdr(header, dev); if (status) { - kfree (vheader); - kfree (header); - kfree (rom_desc); - kfree (ti_manuf_desc); + kfree(vheader); + kfree(header); + kfree(rom_desc); + kfree(ti_manuf_desc); return status; } - // Update I2C with type 0xf2 record with correct size and checksum - status = TIWriteRom (serial, + /* Update I2C with type 0xf2 record with correct + size and checksum */ + status = write_rom(serial, start_address, HEADER_SIZE, header); if (status) { - kfree (vheader); - kfree (header); - kfree (rom_desc); - kfree (ti_manuf_desc); + kfree(vheader); + kfree(header); + kfree(rom_desc); + kfree(ti_manuf_desc); return status; } - // verify the write -- must do this in order for write to - // complete before we do the hardware reset - status = TIReadRom (serial, - start_address, - HEADER_SIZE, - vheader); + /* verify the write -- must do this in order for + write to complete before we do the hardware reset */ + status = read_rom(serial, start_address, + HEADER_SIZE, vheader); if (status) { - dbg ("%s - can't read header back", __func__); - kfree (vheader); - kfree (header); - kfree (rom_desc); - kfree (ti_manuf_desc); + dbg("%s - can't read header back", __func__); + kfree(vheader); + kfree(header); + kfree(rom_desc); + kfree(ti_manuf_desc); return status; } if (memcmp(vheader, header, HEADER_SIZE)) { - dbg ("%s - write download record failed", __func__); - kfree (vheader); - kfree (header); - kfree (rom_desc); - kfree (ti_manuf_desc); + dbg("%s - write download record failed", + __func__); + kfree(vheader); + kfree(header); + kfree(rom_desc); + kfree(ti_manuf_desc); return status; } - kfree (vheader); - kfree (header); + kfree(vheader); + kfree(header); - dbg ("%s - Start firmware update", __func__); + dbg("%s - Start firmware update", __func__); - // Tell firmware to copy download image into I2C - status = TISendVendorRequestSync (serial->serial->dev, - UMPC_COPY_DNLD_TO_I2C, // Request - 0, // wValue - 0, // wIndex - NULL, // TransferBuffer - 0); // TransferBufferLength + /* Tell firmware to copy download image into I2C */ + status = ti_vsend_sync(serial->serial->dev, + UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); - dbg ("%s - Update complete 0x%x", __func__, status); + dbg("%s - Update complete 0x%x", __func__, status); if (status) { - dev_err (dev, "%s - UMPC_COPY_DNLD_TO_I2C failed\n", __func__); - kfree (rom_desc); - kfree (ti_manuf_desc); + dev_err(dev, + "%s - UMPC_COPY_DNLD_TO_I2C failed\n", + __func__); + kfree(rom_desc); + kfree(ti_manuf_desc); return status; } } // The device is running the download code - kfree (rom_desc); - kfree (ti_manuf_desc); + kfree(rom_desc); + kfree(ti_manuf_desc); return 0; } @@ -1355,32 +1349,26 @@ static int TIDownloadFirmware (struct edgeport_serial *serial) /********************************************************************/ dbg("%s - RUNNING IN BOOT MODE", __func__); - // Configure the TI device so we can use the BULK pipes for download - status = TIConfigureBootDevice (serial->serial->dev); + /* Configure the TI device so we can use the BULK pipes for download */ + status = config_boot_dev(serial->serial->dev); if (status) return status; - if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) != USB_VENDOR_ID_ION) { - dbg ("%s - VID = 0x%x", __func__, + if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) + != USB_VENDOR_ID_ION) { + dbg("%s - VID = 0x%x", __func__, le16_to_cpu(serial->serial->dev->descriptor.idVendor)); serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; - goto StayInBootMode; - } - - // We have an ION device (I2c Must be programmed) - // Determine I2C image type - if (TIGetI2cTypeInBootMode(serial)) { - goto StayInBootMode; + goto stayinbootmode; } - // Registry variable set? - if (TIStayInBootMode) { - dbg ("%s - TIStayInBootMode", __func__); - goto StayInBootMode; - } + /* We have an ION device (I2c Must be programmed) + Determine I2C image type */ + if (i2c_type_bootmode(serial)) + goto stayinbootmode; - // Check for ION Vendor ID and that the I2C is valid - if (!TiValidateI2cImage(serial)) { + /* Check for ION Vendor ID and that the I2C is valid */ + if (!check_i2c_image(serial)) { struct ti_i2c_image_header *header; int i; __u8 cs = 0; @@ -1393,49 +1381,52 @@ static int TIDownloadFirmware (struct edgeport_serial *serial) /* Validate Hardware version number * Read Manufacturing Descriptor from TI Based Edgeport */ - ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL); + ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); if (!ti_manuf_desc) { - dev_err (dev, "%s - out of memory.\n", __func__); + dev_err(dev, "%s - out of memory.\n", __func__); return -ENOMEM; } - status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc); + status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); if (status) { - kfree (ti_manuf_desc); - goto StayInBootMode; + kfree(ti_manuf_desc); + goto stayinbootmode; } - // Check for version 2 - if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) { - dbg ("%s - Wrong CPU Rev %d (Must be 2)", __func__, - TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev)); - kfree (ti_manuf_desc); - goto StayInBootMode; + /* Check for version 2 */ + if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { + dbg("%s - Wrong CPU Rev %d (Must be 2)", + __func__, ti_cpu_rev(ti_manuf_desc)); + kfree(ti_manuf_desc); + goto stayinbootmode; } - kfree (ti_manuf_desc); + kfree(ti_manuf_desc); - // In order to update the I2C firmware we must change the type 2 record to type 0xF2. - // This will force the UMP to come up in Boot Mode. Then while in boot mode, the driver - // will download the latest firmware (padded to 15.5k) into the UMP ram. - // And finally when the device comes back up in download mode the driver will cause - // the new firmware to be copied from the UMP Ram to I2C and the firmware will update - // the record type from 0xf2 to 0x02. - /* + * In order to update the I2C firmware we must change the type + * 2 record to type 0xF2. This will force the UMP to come up + * in Boot Mode. Then while in boot mode, the driver will + * download the latest firmware (padded to 15.5k) into the + * UMP ram. Finally when the device comes back up in download + * mode the driver will cause the new firmware to be copied + * from the UMP Ram to I2C and the firmware will update the + * record type from 0xf2 to 0x02. + * * Do we really have to copy the whole firmware image, * or could we do this in place! */ - // Allocate a 15.5k buffer + 3 byte header - buffer_size = (((1024 * 16) - 512) + sizeof(struct ti_i2c_image_header)); - buffer = kmalloc (buffer_size, GFP_KERNEL); + /* Allocate a 15.5k buffer + 3 byte header */ + buffer_size = (((1024 * 16) - 512) + + sizeof(struct ti_i2c_image_header)); + buffer = kmalloc(buffer_size, GFP_KERNEL); if (!buffer) { - dev_err (dev, "%s - out of memory\n", __func__); + dev_err(dev, "%s - out of memory\n", __func__); return -ENOMEM; } - - // Initialize the buffer to 0xff (pad the buffer) - memset (buffer, 0xff, buffer_size); + + /* Initialize the buffer to 0xff (pad the buffer) */ + memset(buffer, 0xff, buffer_size); err = request_firmware(&fw, fw_name, dev); if (err) { @@ -1447,38 +1438,43 @@ static int TIDownloadFirmware (struct edgeport_serial *serial) memcpy(buffer, &fw->data[4], fw->size - 4); release_firmware(fw); - for(i = sizeof(struct ti_i2c_image_header); i < buffer_size; i++) { + for (i = sizeof(struct ti_i2c_image_header); + i < buffer_size; i++) { cs = (__u8)(cs + buffer[i]); } - + header = (struct ti_i2c_image_header *)buffer; - - // update length and checksum after padding - header->Length = cpu_to_le16((__u16)(buffer_size - sizeof(struct ti_i2c_image_header))); + + /* update length and checksum after padding */ + header->Length = cpu_to_le16((__u16)(buffer_size - + sizeof(struct ti_i2c_image_header))); header->CheckSum = cs; - // Download the operational code - dbg ("%s - Downloading operational code image (TI UMP)", __func__); - status = TIDownloadCodeImage (serial, buffer, buffer_size); + /* Download the operational code */ + dbg("%s - Downloading operational code image (TI UMP)", + __func__); + status = download_code(serial, buffer, buffer_size); - kfree (buffer); + kfree(buffer); if (status) { - dbg ("%s - Error downloading operational code image", __func__); + dbg("%s - Error downloading operational code image", + __func__); return status; } - // Device will reboot + /* Device will reboot */ serial->product_info.TiMode = TI_MODE_TRANSITIONING; - dbg ("%s - Download successful -- Device rebooting...", __func__); + dbg("%s - Download successful -- Device rebooting...", + __func__); /* return an error on purpose */ return -ENODEV; } -StayInBootMode: - // Eprom is invalid or blank stay in boot mode +stayinbootmode: + /* Eprom is invalid or blank stay in boot mode */ dbg("%s - STAYING IN BOOT MODE", __func__); serial->product_info.TiMode = TI_MODE_BOOT; @@ -1486,156 +1482,33 @@ StayInBootMode: } -static int TISetDtr (struct edgeport_port *port) +static int ti_do_config(struct edgeport_port *port, int feature, int on) { int port_number = port->port->number - port->port->serial->minor; - - dbg ("%s", __func__); - port->shadow_mcr |= MCR_DTR; - - return TIWriteCommandSync (port->port->serial->dev, - UMPC_SET_CLR_DTR, - (__u8)(UMPM_UART1_PORT + port_number), - 1, /* set */ - NULL, - 0); + on = !!on; /* 1 or 0 not bitmask */ + return send_cmd(port->port->serial->dev, + feature, (__u8)(UMPM_UART1_PORT + port_number), + on, NULL, 0); } -static int TIClearDtr (struct edgeport_port *port) -{ - int port_number = port->port->number - port->port->serial->minor; - - dbg ("%s", __func__); - port->shadow_mcr &= ~MCR_DTR; - return TIWriteCommandSync (port->port->serial->dev, - UMPC_SET_CLR_DTR, - (__u8)(UMPM_UART1_PORT + port_number), - 0, /* clear */ - NULL, - 0); -} - -static int TISetRts (struct edgeport_port *port) -{ - int port_number = port->port->number - port->port->serial->minor; - - dbg ("%s", __func__); - port->shadow_mcr |= MCR_RTS; - - return TIWriteCommandSync (port->port->serial->dev, - UMPC_SET_CLR_RTS, - (__u8)(UMPM_UART1_PORT + port_number), - 1, /* set */ - NULL, - 0); -} - -static int TIClearRts (struct edgeport_port *port) -{ - int port_number = port->port->number - port->port->serial->minor; - - dbg ("%s", __func__); - port->shadow_mcr &= ~MCR_RTS; - - return TIWriteCommandSync (port->port->serial->dev, - UMPC_SET_CLR_RTS, - (__u8)(UMPM_UART1_PORT + port_number), - 0, /* clear */ - NULL, - 0); -} - -static int TISetLoopBack (struct edgeport_port *port) -{ - int port_number = port->port->number - port->port->serial->minor; - - dbg ("%s", __func__); - - return TIWriteCommandSync (port->port->serial->dev, - UMPC_SET_CLR_LOOPBACK, - (__u8)(UMPM_UART1_PORT + port_number), - 1, /* set */ - NULL, - 0); -} - -static int TIClearLoopBack (struct edgeport_port *port) -{ - int port_number = port->port->number - port->port->serial->minor; - - dbg ("%s", __func__); - - return TIWriteCommandSync (port->port->serial->dev, - UMPC_SET_CLR_LOOPBACK, - (__u8)(UMPM_UART1_PORT + port_number), - 0, /* clear */ - NULL, - 0); -} - -static int TISetBreak (struct edgeport_port *port) -{ - int port_number = port->port->number - port->port->serial->minor; - - dbg ("%s", __func__); - - return TIWriteCommandSync (port->port->serial->dev, - UMPC_SET_CLR_BREAK, - (__u8)(UMPM_UART1_PORT + port_number), - 1, /* set */ - NULL, - 0); -} - -static int TIClearBreak (struct edgeport_port *port) -{ - int port_number = port->port->number - port->port->serial->minor; - - dbg ("%s", __func__); - - return TIWriteCommandSync (port->port->serial->dev, - UMPC_SET_CLR_BREAK, - (__u8)(UMPM_UART1_PORT + port_number), - 0, /* clear */ - NULL, - 0); -} - -static int TIRestoreMCR (struct edgeport_port *port, __u8 mcr) +static int restore_mcr(struct edgeport_port *port, __u8 mcr) { int status = 0; - dbg ("%s - %x", __func__, mcr); - - if (mcr & MCR_DTR) - status = TISetDtr (port); - else - status = TIClearDtr (port); + dbg("%s - %x", __func__, mcr); + status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); if (status) return status; - - if (mcr & MCR_RTS) - status = TISetRts (port); - else - status = TIClearRts (port); - + status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); if (status) return status; - - if (mcr & MCR_LOOPBACK) - status = TISetLoopBack (port); - else - status = TIClearLoopBack (port); - - return status; + return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); } - - /* Convert TI LSR to standard UART flags */ -static __u8 MapLineStatus (__u8 ti_lsr) +static __u8 map_line_status(__u8 ti_lsr) { __u8 lsr = 0; @@ -1647,22 +1520,23 @@ static __u8 MapLineStatus (__u8 ti_lsr) MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ - MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* receive data available */ - MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* transmit holding register empty */ + MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ + MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ #undef MAP_FLAG return lsr; } -static void handle_new_msr (struct edgeport_port *edge_port, __u8 msr) +static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) { struct async_icount *icount; struct tty_struct *tty; - dbg ("%s - %02x", __func__, msr); + dbg("%s - %02x", __func__, msr); - if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { + if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | + EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { icount = &edge_port->icount; /* update input line counters */ @@ -1674,7 +1548,7 @@ static void handle_new_msr (struct edgeport_port *edge_port, __u8 msr) icount->dcd++; if (msr & EDGEPORT_MSR_DELTA_RI) icount->rng++; - wake_up_interruptible (&edge_port->delta_msr_wait); + wake_up_interruptible(&edge_port->delta_msr_wait); } /* Save the new modem status */ @@ -1694,26 +1568,28 @@ static void handle_new_msr (struct edgeport_port *edge_port, __u8 msr) return; } -static void handle_new_lsr (struct edgeport_port *edge_port, int lsr_data, __u8 lsr, __u8 data) +static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, + __u8 lsr, __u8 data) { struct async_icount *icount; - __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); + __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | + LSR_FRM_ERR | LSR_BREAK)); - dbg ("%s - %02x", __func__, new_lsr); + dbg("%s - %02x", __func__, new_lsr); edge_port->shadow_lsr = lsr; - if (new_lsr & LSR_BREAK) { + if (new_lsr & LSR_BREAK) /* * Parity and Framing errors only count if they * occur exclusive of a break being received. */ new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); - } /* Place LSR data byte into Rx buffer */ if (lsr_data && edge_port->port->tty) - edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1); + edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, + &data, 1); /* update input line counters */ icount = &edge_port->icount; @@ -1728,7 +1604,7 @@ static void handle_new_lsr (struct edgeport_port *edge_port, int lsr_data, __u8 } -static void edge_interrupt_callback (struct urb *urb) +static void edge_interrupt_callback(struct urb *urb) { struct edgeport_serial *edge_serial = urb->context; struct usb_serial_port *port; @@ -1762,66 +1638,71 @@ static void edge_interrupt_callback (struct urb *urb) } if (!length) { - dbg ("%s - no data in urb", __func__); + dbg("%s - no data in urb", __func__); goto exit; } - - usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __func__, length, data); - + + usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, + __func__, length, data); + if (length != 2) { - dbg ("%s - expecting packet of size 2, got %d", __func__, length); + dbg("%s - expecting packet of size 2, got %d", + __func__, length); goto exit; } - port_number = TIUMP_GET_PORT_FROM_CODE (data[0]); - function = TIUMP_GET_FUNC_FROM_CODE (data[0]); - dbg ("%s - port_number %d, function %d, info 0x%x", + port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); + function = TIUMP_GET_FUNC_FROM_CODE(data[0]); + dbg("%s - port_number %d, function %d, info 0x%x", __func__, port_number, function, data[1]); port = edge_serial->serial->port[port_number]; edge_port = usb_get_serial_port_data(port); if (!edge_port) { - dbg ("%s - edge_port not found", __func__); + dbg("%s - edge_port not found", __func__); return; } switch (function) { case TIUMP_INTERRUPT_CODE_LSR: - lsr = MapLineStatus(data[1]); + lsr = map_line_status(data[1]); if (lsr & UMP_UART_LSR_DATA_MASK) { - /* Save the LSR event for bulk read completion routine */ - dbg ("%s - LSR Event Port %u LSR Status = %02x", + /* Save the LSR event for bulk read + completion routine */ + dbg("%s - LSR Event Port %u LSR Status = %02x", __func__, port_number, lsr); edge_port->lsr_event = 1; edge_port->lsr_mask = lsr; } else { - dbg ("%s - ===== Port %d LSR Status = %02x ======", + dbg("%s - ===== Port %d LSR Status = %02x ======", __func__, port_number, lsr); - handle_new_lsr (edge_port, 0, lsr, 0); + handle_new_lsr(edge_port, 0, lsr, 0); } break; - case TIUMP_INTERRUPT_CODE_MSR: // MSR + case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ /* Copy MSR from UMP */ msr = data[1]; - dbg ("%s - ===== Port %u MSR Status = %02x ======\n", + dbg("%s - ===== Port %u MSR Status = %02x ======\n", __func__, port_number, msr); - handle_new_msr (edge_port, msr); + handle_new_msr(edge_port, msr); break; default: - dev_err (&urb->dev->dev, "%s - Unknown Interrupt code from UMP %x\n", - __func__, data[1]); + dev_err(&urb->dev->dev, + "%s - Unknown Interrupt code from UMP %x\n", + __func__, data[1]); break; - + } exit: - retval = usb_submit_urb (urb, GFP_ATOMIC); + retval = usb_submit_urb(urb, GFP_ATOMIC); if (retval) - dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n", + dev_err(&urb->dev->dev, + "%s - usb_submit_urb failed with result %d\n", __func__, retval); } -static void edge_bulk_in_callback (struct urb *urb) +static void edge_bulk_in_callback(struct urb *urb) { struct edgeport_port *edge_port = urb->context; unsigned char *data = urb->transfer_buffer; @@ -1844,15 +1725,16 @@ static void edge_bulk_in_callback (struct urb *urb) __func__, status); return; default: - dev_err (&urb->dev->dev,"%s - nonzero read bulk status received: %d\n", - __func__, status); + dev_err(&urb->dev->dev, + "%s - nonzero read bulk status received: %d\n", + __func__, status); } if (status == -EPIPE) goto exit; if (status) { - dev_err(&urb->dev->dev,"%s - stopping read!\n", __func__); + dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); return; } @@ -1860,9 +1742,9 @@ static void edge_bulk_in_callback (struct urb *urb) if (edge_port->lsr_event) { edge_port->lsr_event = 0; - dbg ("%s ===== Port %u LSR Status = %02x, Data = %02x ======", + dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======", __func__, port_number, edge_port->lsr_mask, *data); - handle_new_lsr (edge_port, 1, edge_port->lsr_mask, *data); + handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); /* Adjust buffer length/pointer */ --urb->actual_length; ++data; @@ -1870,13 +1752,14 @@ static void edge_bulk_in_callback (struct urb *urb) tty = edge_port->port->tty; if (tty && urb->actual_length) { - usb_serial_debug_data(debug, &edge_port->port->dev, __func__, urb->actual_length, data); - - if (edge_port->close_pending) { - dbg ("%s - close is pending, dropping data on the floor.", __func__); - } else { - edge_tty_recv(&edge_port->port->dev, tty, data, urb->actual_length); - } + usb_serial_debug_data(debug, &edge_port->port->dev, + __func__, urb->actual_length, data); + if (edge_port->close_pending) + dbg("%s - close pending, dropping data on the floor", + __func__); + else + edge_tty_recv(&edge_port->port->dev, tty, data, + urb->actual_length); edge_port->icount.rx += urb->actual_length; } @@ -1891,37 +1774,31 @@ exit: } spin_unlock(&edge_port->ep_lock); if (retval) - dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n", + dev_err(&urb->dev->dev, + "%s - usb_submit_urb failed with result %d\n", __func__, retval); } -static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length) +static void edge_tty_recv(struct device *dev, struct tty_struct *tty, + unsigned char *data, int length) { - int cnt; - - do { - cnt = tty_buffer_request_room(tty, length); - if (cnt < length) { - dev_err(dev, "%s - dropping data, %d bytes lost\n", - __func__, length - cnt); - if(cnt == 0) - break; - } - tty_insert_flip_string(tty, data, cnt); - data += cnt; - length -= cnt; - } while (length > 0); + int queued; + tty_buffer_request_room(tty, length); + queued = tty_insert_flip_string(tty, data, length); + if (queued < length) + dev_err(dev, "%s - dropping data, %d bytes lost\n", + __func__, length - queued); tty_flip_buffer_push(tty); } -static void edge_bulk_out_callback (struct urb *urb) +static void edge_bulk_out_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; struct edgeport_port *edge_port = usb_get_serial_port_data(port); int status = urb->status; - dbg ("%s - port %d", __func__, port->number); + dbg("%s - port %d", __func__, port->number); edge_port->ep_write_urb_in_use = 0; @@ -1945,7 +1822,7 @@ static void edge_bulk_out_callback (struct urb *urb) edge_send(port); } -static int edge_open (struct usb_serial_port *port, struct file * filp) +static int edge_open(struct usb_serial_port *port, struct file *filp) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); struct edgeport_serial *edge_serial; @@ -1965,118 +1842,119 @@ static int edge_open (struct usb_serial_port *port, struct file * filp) port_number = port->number - port->serial->minor; switch (port_number) { - case 0: - edge_port->uart_base = UMPMEM_BASE_UART1; - edge_port->dma_address = UMPD_OEDB1_ADDRESS; - break; - case 1: - edge_port->uart_base = UMPMEM_BASE_UART2; - edge_port->dma_address = UMPD_OEDB2_ADDRESS; - break; - default: - dev_err (&port->dev, "Unknown port number!!!\n"); - return -ENODEV; + case 0: + edge_port->uart_base = UMPMEM_BASE_UART1; + edge_port->dma_address = UMPD_OEDB1_ADDRESS; + break; + case 1: + edge_port->uart_base = UMPMEM_BASE_UART2; + edge_port->dma_address = UMPD_OEDB2_ADDRESS; + break; + default: + dev_err(&port->dev, "Unknown port number!!!\n"); + return -ENODEV; } - dbg ("%s - port_number = %d, uart_base = %04x, dma_address = %04x", - __func__, port_number, edge_port->uart_base, edge_port->dma_address); + dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x", + __func__, port_number, edge_port->uart_base, + edge_port->dma_address); dev = port->serial->dev; - memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount)); - init_waitqueue_head (&edge_port->delta_msr_wait); + memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); + init_waitqueue_head(&edge_port->delta_msr_wait); /* turn off loopback */ - status = TIClearLoopBack (edge_port); + status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); if (status) { - dev_err(&port->dev,"%s - cannot send clear loopback command, %d\n", + dev_err(&port->dev, + "%s - cannot send clear loopback command, %d\n", __func__, status); return status; } - + /* set up the port settings */ - edge_set_termios (port, port->tty->termios); + edge_set_termios(port, port->tty->termios); /* open up the port */ /* milliseconds to timeout for DMA transfer */ transaction_timeout = 2; - edge_port->ump_read_timeout = max (20, ((transaction_timeout * 3) / 2) ); + edge_port->ump_read_timeout = + max(20, ((transaction_timeout * 3) / 2)); - // milliseconds to timeout for DMA transfer - open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | - UMP_PIPE_TRANS_TIMEOUT_ENA | + /* milliseconds to timeout for DMA transfer */ + open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | + UMP_PIPE_TRANS_TIMEOUT_ENA | (transaction_timeout << 2)); - dbg ("%s - Sending UMPC_OPEN_PORT", __func__); + dbg("%s - Sending UMPC_OPEN_PORT", __func__); /* Tell TI to open and start the port */ - status = TIWriteCommandSync (dev, - UMPC_OPEN_PORT, - (u8)(UMPM_UART1_PORT + port_number), - open_settings, - NULL, - 0); + status = send_cmd(dev, UMPC_OPEN_PORT, + (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); if (status) { - dev_err(&port->dev,"%s - cannot send open command, %d\n", __func__, status); + dev_err(&port->dev, "%s - cannot send open command, %d\n", + __func__, status); return status; } /* Start the DMA? */ - status = TIWriteCommandSync (dev, - UMPC_START_PORT, - (u8)(UMPM_UART1_PORT + port_number), - 0, - NULL, - 0); + status = send_cmd(dev, UMPC_START_PORT, + (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); if (status) { - dev_err(&port->dev,"%s - cannot send start DMA command, %d\n", __func__, status); + dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", + __func__, status); return status; } /* Clear TX and RX buffers in UMP */ - status = TIPurgeDataSync (port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); + status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); if (status) { - dev_err(&port->dev,"%s - cannot send clear buffers command, %d\n", __func__, status); + dev_err(&port->dev, + "%s - cannot send clear buffers command, %d\n", + __func__, status); return status; } /* Read Initial MSR */ - status = TIReadVendorRequestSync (dev, - UMPC_READ_MSR, // Request - 0, // wValue - (__u16)(UMPM_UART1_PORT + port_number), // wIndex (Address) - &edge_port->shadow_msr, // TransferBuffer - 1); // TransferBufferLength + status = ti_vread_sync(dev, UMPC_READ_MSR, 0, + (__u16)(UMPM_UART1_PORT + port_number), + &edge_port->shadow_msr, 1); if (status) { - dev_err(&port->dev,"%s - cannot send read MSR command, %d\n", __func__, status); + dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", + __func__, status); return status; } - dbg ("ShadowMSR 0x%X", edge_port->shadow_msr); - + dbg("ShadowMSR 0x%X", edge_port->shadow_msr); + /* Set Initial MCR */ edge_port->shadow_mcr = MCR_RTS | MCR_DTR; - dbg ("ShadowMCR 0x%X", edge_port->shadow_mcr); + dbg("ShadowMCR 0x%X", edge_port->shadow_mcr); edge_serial = edge_port->edge_serial; if (mutex_lock_interruptible(&edge_serial->es_lock)) return -ERESTARTSYS; if (edge_serial->num_ports_open == 0) { - /* we are the first port to be opened, let's post the interrupt urb */ + /* we are the first port to open, post the interrupt urb */ urb = edge_serial->serial->port[0]->interrupt_in_urb; if (!urb) { - dev_err (&port->dev, "%s - no interrupt urb present, exiting\n", __func__); + dev_err(&port->dev, + "%s - no interrupt urb present, exiting\n", + __func__); status = -EINVAL; goto release_es_lock; } urb->complete = edge_interrupt_callback; urb->context = edge_serial; urb->dev = dev; - status = usb_submit_urb (urb, GFP_KERNEL); + status = usb_submit_urb(urb, GFP_KERNEL); if (status) { - dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __func__, status); + dev_err(&port->dev, + "%s - usb_submit_urb failed with value %d\n", + __func__, status); goto release_es_lock; } } @@ -2085,13 +1963,14 @@ static int edge_open (struct usb_serial_port *port, struct file * filp) * reset the data toggle on the bulk endpoints to work around bug in * host controllers where things get out of sync some times */ - usb_clear_halt (dev, port->write_urb->pipe); - usb_clear_halt (dev, port->read_urb->pipe); + usb_clear_halt(dev, port->write_urb->pipe); + usb_clear_halt(dev, port->read_urb->pipe); /* start up our bulk read urb */ urb = port->read_urb; if (!urb) { - dev_err (&port->dev, "%s - no read urb present, exiting\n", __func__); + dev_err(&port->dev, "%s - no read urb present, exiting\n", + __func__); status = -EINVAL; goto unlink_int_urb; } @@ -2099,9 +1978,11 @@ static int edge_open (struct usb_serial_port *port, struct file * filp) urb->complete = edge_bulk_in_callback; urb->context = edge_port; urb->dev = dev; - status = usb_submit_urb (urb, GFP_KERNEL); + status = usb_submit_urb(urb, GFP_KERNEL); if (status) { - dev_err (&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __func__, status); + dev_err(&port->dev, + "%s - read bulk usb_submit_urb failed with value %d\n", + __func__, status); goto unlink_int_urb; } @@ -2119,7 +2000,7 @@ release_es_lock: return status; } -static void edge_close (struct usb_serial_port *port, struct file *filp) +static void edge_close(struct usb_serial_port *port, struct file *filp) { struct edgeport_serial *edge_serial; struct edgeport_port *edge_port; @@ -2127,18 +2008,18 @@ static void edge_close (struct usb_serial_port *port, struct file *filp) int status; dbg("%s - port %d", __func__, port->number); - + edge_serial = usb_get_serial_data(port->serial); edge_port = usb_get_serial_port_data(port); - if ((edge_serial == NULL) || (edge_port == NULL)) + if (edge_serial == NULL || edge_port == NULL) return; - - /* The bulkreadcompletion routine will check + + /* The bulkreadcompletion routine will check * this flag and dump add read data */ edge_port->close_pending = 1; /* chase the port close and flush */ - TIChasePort (edge_port, (HZ*closing_wait)/100, 1); + chase_port(edge_port, (HZ * closing_wait) / 100, 1); usb_kill_urb(port->read_urb); usb_kill_urb(port->write_urb); @@ -2148,7 +2029,7 @@ static void edge_close (struct usb_serial_port *port, struct file *filp) * send a close port command to it */ dbg("%s - send umpc_close_port", __func__); port_number = port->number - port->serial->minor; - status = TIWriteCommandSync (port->serial->dev, + status = send_cmd(port->serial->dev, UMPC_CLOSE_PORT, (__u8)(UMPM_UART1_PORT + port_number), 0, @@ -2167,7 +2048,8 @@ static void edge_close (struct usb_serial_port *port, struct file *filp) dbg("%s - exited", __func__); } -static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count) +static int edge_write(struct usb_serial_port *port, const unsigned char *data, + int count) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); unsigned long flags; @@ -2223,11 +2105,12 @@ static void edge_send(struct usb_serial_port *port) spin_unlock_irqrestore(&edge_port->ep_lock, flags); - usb_serial_debug_data(debug, &port->dev, __func__, count, port->write_urb->transfer_buffer); + usb_serial_debug_data(debug, &port->dev, __func__, count, + port->write_urb->transfer_buffer); /* set up our urb */ - usb_fill_bulk_urb (port->write_urb, port->serial->dev, - usb_sndbulkpipe (port->serial->dev, + usb_fill_bulk_urb(port->write_urb, port->serial->dev, + usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), port->write_urb->transfer_buffer, count, edge_bulk_out_callback, @@ -2236,22 +2119,21 @@ static void edge_send(struct usb_serial_port *port) /* send the data out the bulk port */ result = usb_submit_urb(port->write_urb, GFP_ATOMIC); if (result) { - dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __func__, result); + dev_err(&port->dev, + "%s - failed submitting write urb, error %d\n", + __func__, result); edge_port->ep_write_urb_in_use = 0; - // TODO: reschedule edge_send - } else { + /* TODO: reschedule edge_send */ + } else edge_port->icount.tx += count; - } /* wakeup any process waiting for writes to complete */ /* there is now more room in the buffer for new writes */ - if (tty) { - /* let the tty driver wakeup if it has a special write_wakeup function */ + if (tty) tty_wakeup(tty); - } } -static int edge_write_room (struct usb_serial_port *port) +static int edge_write_room(struct usb_serial_port *port) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); int room = 0; @@ -2260,9 +2142,9 @@ static int edge_write_room (struct usb_serial_port *port) dbg("%s - port %d", __func__, port->number); if (edge_port == NULL) - return -ENODEV; + return 0; if (edge_port->close_pending == 1) - return -ENODEV; + return 0; spin_lock_irqsave(&edge_port->ep_lock, flags); room = edge_buf_space_avail(edge_port->ep_out_buf); @@ -2272,7 +2154,7 @@ static int edge_write_room (struct usb_serial_port *port) return room; } -static int edge_chars_in_buffer (struct usb_serial_port *port) +static int edge_chars_in_buffer(struct usb_serial_port *port) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); int chars = 0; @@ -2281,22 +2163,22 @@ static int edge_chars_in_buffer (struct usb_serial_port *port) dbg("%s - port %d", __func__, port->number); if (edge_port == NULL) - return -ENODEV; + return 0; if (edge_port->close_pending == 1) - return -ENODEV; + return 0; spin_lock_irqsave(&edge_port->ep_lock, flags); chars = edge_buf_data_avail(edge_port->ep_out_buf); spin_unlock_irqrestore(&edge_port->ep_lock, flags); - dbg ("%s - returns %d", __func__, chars); + dbg("%s - returns %d", __func__, chars); return chars; } -static void edge_throttle (struct usb_serial_port *port) +static void edge_throttle(struct usb_serial_port *port) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); - struct tty_struct *tty; + struct tty_struct *tty = port->tty; int status; dbg("%s - port %d", __func__, port->number); @@ -2304,19 +2186,14 @@ static void edge_throttle (struct usb_serial_port *port) if (edge_port == NULL) return; - tty = port->tty; - if (!tty) { - dbg ("%s - no tty available", __func__); - return; - } - /* if we are implementing XON/XOFF, send the stop character */ if (I_IXOFF(tty)) { unsigned char stop_char = STOP_CHAR(tty); - status = edge_write (port, &stop_char, 1); - if (status <= 0) { - dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); - } + status = edge_write(port, &stop_char, 1); + if (status <= 0) + dev_err(&port->dev, + "%s - failed to write stop character, %d\n", + __func__, status); } /* if we are implementing RTS/CTS, stop reads */ @@ -2326,10 +2203,10 @@ static void edge_throttle (struct usb_serial_port *port) } -static void edge_unthrottle (struct usb_serial_port *port) +static void edge_unthrottle(struct usb_serial_port *port) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); - struct tty_struct *tty; + struct tty_struct *tty = port->tty; int status; dbg("%s - port %d", __func__, port->number); @@ -2337,27 +2214,23 @@ static void edge_unthrottle (struct usb_serial_port *port) if (edge_port == NULL) return; - tty = port->tty; - if (!tty) { - dbg ("%s - no tty available", __func__); - return; - } - /* if we are implementing XON/XOFF, send the start character */ if (I_IXOFF(tty)) { unsigned char start_char = START_CHAR(tty); - status = edge_write (port, &start_char, 1); - if (status <= 0) { - dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); - } + status = edge_write(port, &start_char, 1); + if (status <= 0) + dev_err(&port->dev, + "%s - failed to write start character, %d\n", + __func__, status); } - /* if we are implementing RTS/CTS, restart reads */ /* are the Edgeport will assert the RTS line */ if (C_CRTSCTS(tty)) { status = restart_read(edge_port); if (status) - dev_err(&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __func__, status); + dev_err(&port->dev, + "%s - read bulk usb_submit_urb failed: %d\n", + __func__, status); } } @@ -2398,22 +2271,26 @@ static int restart_read(struct edgeport_port *edge_port) return status; } -static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios) +static void change_port_settings(struct edgeport_port *edge_port, + struct ktermios *old_termios) { struct ump_uart_config *config; struct tty_struct *tty; int baud; unsigned cflag; int status; - int port_number = edge_port->port->number - edge_port->port->serial->minor; + int port_number = edge_port->port->number - + edge_port->port->serial->minor; dbg("%s - port %d", __func__, edge_port->port->number); tty = edge_port->port->tty; - config = kmalloc (sizeof (*config), GFP_KERNEL); + config = kmalloc(sizeof(*config), GFP_KERNEL); if (!config) { - dev_err (&edge_port->port->dev, "%s - out of memory\n", __func__); + *tty->termios = *old_termios; + dev_err(&edge_port->port->dev, "%s - out of memory\n", + __func__); return; } @@ -2427,22 +2304,22 @@ static void change_port_settings (struct edgeport_port *edge_port, struct ktermi config->bUartMode = (__u8)(edge_port->bUartMode); switch (cflag & CSIZE) { - case CS5: - config->bDataBits = UMP_UART_CHAR5BITS; - dbg ("%s - data bits = 5", __func__); - break; - case CS6: - config->bDataBits = UMP_UART_CHAR6BITS; - dbg ("%s - data bits = 6", __func__); - break; - case CS7: - config->bDataBits = UMP_UART_CHAR7BITS; - dbg ("%s - data bits = 7", __func__); - break; - default: - case CS8: - config->bDataBits = UMP_UART_CHAR8BITS; - dbg ("%s - data bits = 8", __func__); + case CS5: + config->bDataBits = UMP_UART_CHAR5BITS; + dbg("%s - data bits = 5", __func__); + break; + case CS6: + config->bDataBits = UMP_UART_CHAR6BITS; + dbg("%s - data bits = 6", __func__); + break; + case CS7: + config->bDataBits = UMP_UART_CHAR7BITS; + dbg("%s - data bits = 7", __func__); + break; + default: + case CS8: + config->bDataBits = UMP_UART_CHAR8BITS; + dbg("%s - data bits = 8", __func__); break; } @@ -2457,7 +2334,7 @@ static void change_port_settings (struct edgeport_port *edge_port, struct ktermi dbg("%s - parity = even", __func__); } } else { - config->bParity = UMP_UART_NOPARITY; + config->bParity = UMP_UART_NOPARITY; dbg("%s - parity = none", __func__); } @@ -2480,29 +2357,26 @@ static void change_port_settings (struct edgeport_port *edge_port, struct ktermi restart_read(edge_port); } - /* if we are implementing XON/XOFF, set the start and stop character in the device */ - if (I_IXOFF(tty) || I_IXON(tty)) { - config->cXon = START_CHAR(tty); - config->cXoff = STOP_CHAR(tty); + /* if we are implementing XON/XOFF, set the start and stop + character in the device */ + config->cXon = START_CHAR(tty); + config->cXoff = STOP_CHAR(tty); - /* if we are implementing INBOUND XON/XOFF */ - if (I_IXOFF(tty)) { - config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; - dbg ("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", - __func__, config->cXon, config->cXoff); - } else { - dbg ("%s - INBOUND XON/XOFF is disabled", __func__); - } + /* if we are implementing INBOUND XON/XOFF */ + if (I_IXOFF(tty)) { + config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; + dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", + __func__, config->cXon, config->cXoff); + } else + dbg("%s - INBOUND XON/XOFF is disabled", __func__); - /* if we are implementing OUTBOUND XON/XOFF */ - if (I_IXON(tty)) { - config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; - dbg ("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", - __func__, config->cXon, config->cXoff); - } else { - dbg ("%s - OUTBOUND XON/XOFF is disabled", __func__); - } - } + /* if we are implementing OUTBOUND XON/XOFF */ + if (I_IXON(tty)) { + config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; + dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", + __func__, config->cXon, config->cXoff); + } else + dbg("%s - OUTBOUND XON/XOFF is disabled", __func__); tty->termios->c_cflag &= ~CMSPAR; @@ -2519,62 +2393,52 @@ static void change_port_settings (struct edgeport_port *edge_port, struct ktermi /* FIXME: Recompute actual baud from divisor here */ - dbg ("%s - baud rate = %d, wBaudRate = %d", __func__, baud, config->wBaudRate); + dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud, + config->wBaudRate); - dbg ("wBaudRate: %d", (int)(461550L / config->wBaudRate)); - dbg ("wFlags: 0x%x", config->wFlags); - dbg ("bDataBits: %d", config->bDataBits); - dbg ("bParity: %d", config->bParity); - dbg ("bStopBits: %d", config->bStopBits); - dbg ("cXon: %d", config->cXon); - dbg ("cXoff: %d", config->cXoff); - dbg ("bUartMode: %d", config->bUartMode); + dbg("wBaudRate: %d", (int)(461550L / config->wBaudRate)); + dbg("wFlags: 0x%x", config->wFlags); + dbg("bDataBits: %d", config->bDataBits); + dbg("bParity: %d", config->bParity); + dbg("bStopBits: %d", config->bStopBits); + dbg("cXon: %d", config->cXon); + dbg("cXoff: %d", config->cXoff); + dbg("bUartMode: %d", config->bUartMode); /* move the word values into big endian mode */ - cpu_to_be16s (&config->wFlags); - cpu_to_be16s (&config->wBaudRate); + cpu_to_be16s(&config->wFlags); + cpu_to_be16s(&config->wBaudRate); - status = TIWriteCommandSync (edge_port->port->serial->dev, - UMPC_SET_CONFIG, + status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, (__u8)(UMPM_UART1_PORT + port_number), - 0, - (__u8 *)config, - sizeof(*config)); - if (status) { - dbg ("%s - error %d when trying to write config to device", + 0, (__u8 *)config, sizeof(*config)); + if (status) + dbg("%s - error %d when trying to write config to device", __func__, status); - } - - kfree (config); - + kfree(config); return; } -static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios) +static void edge_set_termios(struct usb_serial_port *port, + struct ktermios *old_termios) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); struct tty_struct *tty = port->tty; - unsigned int cflag; - - cflag = tty->termios->c_cflag; dbg("%s - clfag %08x iflag %08x", __func__, tty->termios->c_cflag, tty->termios->c_iflag); dbg("%s - old clfag %08x old iflag %08x", __func__, old_termios->c_cflag, old_termios->c_iflag); - dbg("%s - port %d", __func__, port->number); if (edge_port == NULL) return; - /* change the port settings to the new ones specified */ - change_port_settings (edge_port, old_termios); - - return; + change_port_settings(edge_port, old_termios); } -static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear) +static int edge_tiocmset(struct usb_serial_port *port, struct file *file, + unsigned int set, unsigned int clear) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); unsigned int mcr; @@ -2601,8 +2465,7 @@ static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsig edge_port->shadow_mcr = mcr; spin_unlock_irqrestore(&edge_port->ep_lock, flags); - TIRestoreMCR (edge_port, mcr); - + restore_mcr(edge_port, mcr); return 0; } @@ -2634,7 +2497,8 @@ static int edge_tiocmget(struct usb_serial_port *port, struct file *file) return result; } -static int get_serial_info (struct edgeport_port *edge_port, struct serial_struct __user *retinfo) +static int get_serial_info(struct edgeport_port *edge_port, + struct serial_struct __user *retinfo) { struct serial_struct tmp; @@ -2652,17 +2516,14 @@ static int get_serial_info (struct edgeport_port *edge_port, struct serial_struc tmp.baud_base = 9600; tmp.close_delay = 5*HZ; tmp.closing_wait = closing_wait; -// tmp.custom_divisor = state->custom_divisor; -// tmp.hub6 = state->hub6; -// tmp.io_type = state->io_type; - if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) return -EFAULT; return 0; } -static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg) +static int edge_ioctl(struct usb_serial_port *port, struct file *file, + unsigned int cmd, unsigned long arg) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); struct async_icount cnow; @@ -2671,81 +2532,63 @@ static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); switch (cmd) { - case TIOCINQ: - dbg("%s - (%d) TIOCINQ", __func__, port->number); -// return get_number_bytes_avail(edge_port, (unsigned int *) arg); - break; - - case TIOCSERGETLSR: - dbg("%s - (%d) TIOCSERGETLSR", __func__, port->number); -// return get_lsr_info(edge_port, (unsigned int *) arg); - break; - - case TIOCGSERIAL: - dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); - return get_serial_info(edge_port, (struct serial_struct __user *) arg); - break; - - case TIOCSSERIAL: - dbg("%s - (%d) TIOCSSERIAL", __func__, port->number); - break; - - case TIOCMIWAIT: - dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); - cprev = edge_port->icount; - while (1) { - interruptible_sleep_on(&edge_port->delta_msr_wait); - /* see if a signal did it */ - if (signal_pending(current)) - return -ERESTARTSYS; - cnow = edge_port->icount; - if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && - cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) - return -EIO; /* no change => error */ - if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || - ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || - ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || - ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { - return 0; - } - cprev = cnow; + case TIOCGSERIAL: + dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); + return get_serial_info(edge_port, + (struct serial_struct __user *) arg); + case TIOCMIWAIT: + dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); + cprev = edge_port->icount; + while (1) { + interruptible_sleep_on(&edge_port->delta_msr_wait); + /* see if a signal did it */ + if (signal_pending(current)) + return -ERESTARTSYS; + cnow = edge_port->icount; + if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && + cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) + return -EIO; /* no change => error */ + if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || + ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || + ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || + ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { + return 0; } - /* not reached */ - break; - - case TIOCGICOUNT: - dbg ("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, - port->number, edge_port->icount.rx, edge_port->icount.tx); - if (copy_to_user((void __user *)arg, &edge_port->icount, sizeof(edge_port->icount))) - return -EFAULT; - return 0; + cprev = cnow; + } + /* not reached */ + break; + case TIOCGICOUNT: + dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, + port->number, edge_port->icount.rx, edge_port->icount.tx); + if (copy_to_user((void __user *)arg, &edge_port->icount, + sizeof(edge_port->icount))) + return -EFAULT; + return 0; } - return -ENOIOCTLCMD; } -static void edge_break (struct usb_serial_port *port, int break_state) +static void edge_break(struct usb_serial_port *port, int on) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); int status; + int bv = 0; /* Off */ - dbg ("%s - state = %d", __func__, break_state); + dbg("%s - state = %d", __func__, on); /* chase the port close */ - TIChasePort (edge_port, 0, 0); + chase_port(edge_port, 0, 0); - if (break_state == -1) { - status = TISetBreak (edge_port); - } else { - status = TIClearBreak (edge_port); - } - if (status) { - dbg ("%s - error %d sending break set/clear command.", + if (on == -1) + bv = 1; /* On */ + status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); + if (status) + dbg("%s - error %d sending break set/clear command.", __func__, status); - } } -static int edge_startup (struct usb_serial *serial) +static int edge_startup(struct usb_serial *serial) { struct edgeport_serial *edge_serial; struct edgeport_port *edge_port; @@ -2765,9 +2608,9 @@ static int edge_startup (struct usb_serial *serial) edge_serial->serial = serial; usb_set_serial_data(serial, edge_serial); - status = TIDownloadFirmware (edge_serial); + status = download_fw(edge_serial); if (status) { - kfree (edge_serial); + kfree(edge_serial); return status; } @@ -2775,13 +2618,15 @@ static int edge_startup (struct usb_serial *serial) for (i = 0; i < serial->num_ports; ++i) { edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); if (edge_port == NULL) { - dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); + dev_err(&serial->dev->dev, "%s - Out of memory\n", + __func__); goto cleanup; } spin_lock_init(&edge_port->ep_lock); edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE); if (edge_port->ep_out_buf == NULL) { - dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); + dev_err(&serial->dev->dev, "%s - Out of memory\n", + __func__); kfree(edge_port); goto cleanup; } @@ -2790,27 +2635,27 @@ static int edge_startup (struct usb_serial *serial) usb_set_serial_port_data(serial->port[i], edge_port); edge_port->bUartMode = default_uart_mode; } - + return 0; cleanup: - for (--i; i>=0; --i) { + for (--i; i >= 0; --i) { edge_port = usb_get_serial_port_data(serial->port[i]); edge_buf_free(edge_port->ep_out_buf); kfree(edge_port); usb_set_serial_port_data(serial->port[i], NULL); } - kfree (edge_serial); + kfree(edge_serial); usb_set_serial_data(serial, NULL); return -ENOMEM; } -static void edge_shutdown (struct usb_serial *serial) +static void edge_shutdown(struct usb_serial *serial) { int i; struct edgeport_port *edge_port; - dbg ("%s", __func__); + dbg("%s", __func__); for (i = 0; i < serial->num_ports; ++i) { edge_port = usb_get_serial_port_data(serial->port[i]); @@ -2852,7 +2697,8 @@ static ssize_t store_uart_mode(struct device *dev, return count; } -static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, store_uart_mode); +static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, + store_uart_mode); static int edge_create_sysfs_attrs(struct usb_serial_port *port) { @@ -2922,9 +2768,9 @@ static void edge_buf_free(struct edge_buf *eb) static void edge_buf_clear(struct edge_buf *eb) { - if (eb != NULL) - eb->buf_get = eb->buf_put; - /* equivalent to a get of all data available */ + if (eb != NULL) + eb->buf_get = eb->buf_put; + /* equivalent to a get of all data available */ } @@ -2937,10 +2783,9 @@ static void edge_buf_clear(struct edge_buf *eb) static unsigned int edge_buf_data_avail(struct edge_buf *eb) { - if (eb != NULL) - return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size); - else + if (eb == NULL) return 0; + return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size); } @@ -2953,10 +2798,9 @@ static unsigned int edge_buf_data_avail(struct edge_buf *eb) static unsigned int edge_buf_space_avail(struct edge_buf *eb) { - if (eb != NULL) - return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size); - else + if (eb == NULL) return 0; + return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size); } @@ -3113,7 +2957,7 @@ static int __init edgeport_init(void) if (retval) goto failed_2port_device_register; retval = usb_register(&io_driver); - if (retval) + if (retval) goto failed_usb_register; info(DRIVER_DESC " " DRIVER_VERSION); return 0; @@ -3125,11 +2969,11 @@ failed_1port_device_register: return retval; } -static void __exit edgeport_exit (void) +static void __exit edgeport_exit(void) { - usb_deregister (&io_driver); - usb_serial_deregister (&edgeport_1port_device); - usb_serial_deregister (&edgeport_2port_device); + usb_deregister(&io_driver); + usb_serial_deregister(&edgeport_1port_device); + usb_serial_deregister(&edgeport_2port_device); } module_init(edgeport_init); @@ -3151,8 +2995,8 @@ module_param(closing_wait, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(ignore_cpu_rev, "Ignore the cpu revision when connecting to a device"); +MODULE_PARM_DESC(ignore_cpu_rev, + "Ignore the cpu revision when connecting to a device"); module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); - diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c index d9fb3768a2d..80d9ec5570d 100644 --- a/drivers/usb/serial/ipaq.c +++ b/drivers/usb/serial/ipaq.c @@ -646,12 +646,13 @@ static int ipaq_open(struct usb_serial_port *port, struct file *filp) */ kfree(port->bulk_in_buffer); - kfree(port->bulk_out_buffer); port->bulk_in_buffer = kmalloc(URBDATA_SIZE, GFP_KERNEL); if (port->bulk_in_buffer == NULL) { port->bulk_out_buffer = NULL; /* prevent double free */ goto enomem; } + + kfree(port->bulk_out_buffer); port->bulk_out_buffer = kmalloc(URBDATA_SIZE, GFP_KERNEL); if (port->bulk_out_buffer == NULL) { kfree(port->bulk_in_buffer); diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index 004d57385a7..0063c11c808 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -19,7 +19,12 @@ * was written by Roman Weissgaerber <weissg@vienna.at>, Dag Brattli * <dag@brattli.net>, and Jean Tourrilhes <jt@hpl.hp.com> * - * See Documentation/usb/usb-serial.txt for more information on using this driver + * See Documentation/usb/usb-serial.txt for more information on using this + * driver + * + * 2008_Jun_02 Felipe Balbi <me@felipebalbi.com> + * Introduced common header to be used also in USB Gadget Framework. + * Still needs some other style fixes. * * 2007_Jun_21 Alan Cox <alan@redhat.com> * Minimal cleanups for some of the driver problens and tty layer abuse. @@ -59,9 +64,10 @@ #include <linux/tty_flip.h> #include <linux/module.h> #include <linux/spinlock.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/usb.h> #include <linux/usb/serial.h> +#include <linux/usb/irda.h> /* * Version Information @@ -70,100 +76,75 @@ #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>" #define DRIVER_DESC "USB IR Dongle driver" -/* USB IrDA class spec information */ -#define USB_CLASS_IRDA 0x02 -#define USB_DT_IRDA 0x21 -#define IU_REQ_GET_CLASS_DESC 0x06 -#define SPEED_2400 0x01 -#define SPEED_9600 0x02 -#define SPEED_19200 0x03 -#define SPEED_38400 0x04 -#define SPEED_57600 0x05 -#define SPEED_115200 0x06 -#define SPEED_576000 0x07 -#define SPEED_1152000 0x08 -#define SPEED_4000000 0x09 - -struct irda_class_desc { - u8 bLength; - u8 bDescriptorType; - u16 bcdSpecRevision; - u8 bmDataSize; - u8 bmWindowSize; - u8 bmMinTurnaroundTime; - u16 wBaudRate; - u8 bmAdditionalBOFs; - u8 bIrdaRateSniff; - u8 bMaxUnicastList; -} __attribute__ ((packed)); - static int debug; /* if overridden by the user, then use their value for the size of the read and * write urbs */ static int buffer_size; + /* if overridden by the user, then use the specified number of XBOFs */ static int xbof = -1; -static int ir_startup (struct usb_serial *serial); -static int ir_open (struct usb_serial_port *port, struct file *filep); -static void ir_close (struct usb_serial_port *port, struct file *filep); -static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int count); -static void ir_write_bulk_callback (struct urb *urb); -static void ir_read_bulk_callback (struct urb *urb); -static void ir_set_termios (struct usb_serial_port *port, struct ktermios *old_termios); +static int ir_startup(struct usb_serial *serial); +static int ir_open(struct usb_serial_port *port, struct file *filep); +static void ir_close(struct usb_serial_port *port, struct file *filep); +static int ir_write(struct usb_serial_port *port, + const unsigned char *buf, int count); +static void ir_write_bulk_callback(struct urb *urb); +static void ir_read_bulk_callback(struct urb *urb); +static void ir_set_termios(struct usb_serial_port *port, + struct ktermios *old_termios); /* Not that this lot means you can only have one per system */ -static u8 ir_baud = 0; -static u8 ir_xbof = 0; -static u8 ir_add_bof = 0; +static u8 ir_baud; +static u8 ir_xbof; +static u8 ir_add_bof; -static struct usb_device_id id_table [] = { +static struct usb_device_id ir_id_table[] = { { USB_DEVICE(0x050f, 0x0180) }, /* KC Technology, KC-180 */ { USB_DEVICE(0x08e9, 0x0100) }, /* XTNDAccess */ { USB_DEVICE(0x09c4, 0x0011) }, /* ACTiSys ACT-IR2000U */ - { USB_INTERFACE_INFO (USB_CLASS_APP_SPEC, USB_CLASS_IRDA, 0) }, + { USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, USB_SUBCLASS_IRDA, 0) }, { } /* Terminating entry */ }; -MODULE_DEVICE_TABLE (usb, id_table); +MODULE_DEVICE_TABLE(usb, ir_id_table); static struct usb_driver ir_driver = { - .name = "ir-usb", - .probe = usb_serial_probe, - .disconnect = usb_serial_disconnect, - .id_table = id_table, - .no_dynamic_id = 1, + .name = "ir-usb", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .id_table = ir_id_table, + .no_dynamic_id = 1, }; - static struct usb_serial_driver ir_device = { - .driver = { - .owner = THIS_MODULE, - .name = "ir-usb", + .driver = { + .owner = THIS_MODULE, + .name = "ir-usb", }, - .description = "IR Dongle", - .usb_driver = &ir_driver, - .id_table = id_table, - .num_ports = 1, - .set_termios = ir_set_termios, - .attach = ir_startup, - .open = ir_open, - .close = ir_close, - .write = ir_write, - .write_bulk_callback = ir_write_bulk_callback, - .read_bulk_callback = ir_read_bulk_callback, + .description = "IR Dongle", + .usb_driver = &ir_driver, + .id_table = ir_id_table, + .num_ports = 1, + .set_termios = ir_set_termios, + .attach = ir_startup, + .open = ir_open, + .close = ir_close, + .write = ir_write, + .write_bulk_callback = ir_write_bulk_callback, + .read_bulk_callback = ir_read_bulk_callback, }; -static inline void irda_usb_dump_class_desc(struct irda_class_desc *desc) +static inline void irda_usb_dump_class_desc(struct usb_irda_cs_descriptor *desc) { dbg("bLength=%x", desc->bLength); dbg("bDescriptorType=%x", desc->bDescriptorType); - dbg("bcdSpecRevision=%x", desc->bcdSpecRevision); + dbg("bcdSpecRevision=%x", __le16_to_cpu(desc->bcdSpecRevision)); dbg("bmDataSize=%x", desc->bmDataSize); dbg("bmWindowSize=%x", desc->bmWindowSize); dbg("bmMinTurnaroundTime=%d", desc->bmMinTurnaroundTime); - dbg("wBaudRate=%x", desc->wBaudRate); + dbg("wBaudRate=%x", __le16_to_cpu(desc->wBaudRate)); dbg("bmAdditionalBOFs=%x", desc->bmAdditionalBOFs); dbg("bIrdaRateSniff=%x", desc->bIrdaRateSniff); dbg("bMaxUnicastList=%x", desc->bMaxUnicastList); @@ -181,35 +162,37 @@ static inline void irda_usb_dump_class_desc(struct irda_class_desc *desc) * * Based on the same function in drivers/net/irda/irda-usb.c */ -static struct irda_class_desc *irda_usb_find_class_desc(struct usb_device *dev, unsigned int ifnum) +static struct usb_irda_cs_descriptor * +irda_usb_find_class_desc(struct usb_device *dev, unsigned int ifnum) { - struct irda_class_desc *desc; + struct usb_irda_cs_descriptor *desc; int ret; - - desc = kzalloc(sizeof (struct irda_class_desc), GFP_KERNEL); - if (desc == NULL) + + desc = kzalloc(sizeof(*desc), GFP_KERNEL); + if (!desc) return NULL; - - ret = usb_control_msg(dev, usb_rcvctrlpipe(dev,0), - IU_REQ_GET_CLASS_DESC, + + ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), + USB_REQ_CS_IRDA_GET_CLASS_DESC, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0, ifnum, desc, sizeof(*desc), 1000); - + dbg("%s - ret=%d", __func__, ret); if (ret < sizeof(*desc)) { dbg("%s - class descriptor read %s (%d)", __func__, - (ret<0) ? "failed" : "too short", + (ret < 0) ? "failed" : "too short", ret); goto error; } - if (desc->bDescriptorType != USB_DT_IRDA) { + if (desc->bDescriptorType != USB_DT_CS_IRDA) { dbg("%s - bad class descriptor type", __func__); goto error; } - + irda_usb_dump_class_desc(desc); return desc; + error: kfree(desc); return NULL; @@ -219,64 +202,100 @@ error: static u8 ir_xbof_change(u8 xbof) { u8 result; + /* reference irda-usb.c */ - switch(xbof) { - case 48: result = 0x10; break; - case 28: - case 24: result = 0x20; break; - default: - case 12: result = 0x30; break; - case 5: - case 6: result = 0x40; break; - case 3: result = 0x50; break; - case 2: result = 0x60; break; - case 1: result = 0x70; break; - case 0: result = 0x80; break; + switch (xbof) { + case 48: + result = 0x10; + break; + case 28: + case 24: + result = 0x20; + break; + default: + case 12: + result = 0x30; + break; + case 5: + case 6: + result = 0x40; + break; + case 3: + result = 0x50; + break; + case 2: + result = 0x60; + break; + case 1: + result = 0x70; + break; + case 0: + result = 0x80; + break; } + return(result); } -static int ir_startup (struct usb_serial *serial) +static int ir_startup(struct usb_serial *serial) { - struct irda_class_desc *irda_desc; + struct usb_irda_cs_descriptor *irda_desc; - irda_desc = irda_usb_find_class_desc (serial->dev, 0); - if (irda_desc == NULL) { - dev_err (&serial->dev->dev, "IRDA class descriptor not found, device not bound\n"); + irda_desc = irda_usb_find_class_desc(serial->dev, 0); + if (!irda_desc) { + dev_err(&serial->dev->dev, + "IRDA class descriptor not found, device not bound\n"); return -ENODEV; } - dbg ("%s - Baud rates supported:%s%s%s%s%s%s%s%s%s", + dbg("%s - Baud rates supported:%s%s%s%s%s%s%s%s%s", __func__, - (irda_desc->wBaudRate & 0x0001) ? " 2400" : "", - (irda_desc->wBaudRate & 0x0002) ? " 9600" : "", - (irda_desc->wBaudRate & 0x0004) ? " 19200" : "", - (irda_desc->wBaudRate & 0x0008) ? " 38400" : "", - (irda_desc->wBaudRate & 0x0010) ? " 57600" : "", - (irda_desc->wBaudRate & 0x0020) ? " 115200" : "", - (irda_desc->wBaudRate & 0x0040) ? " 576000" : "", - (irda_desc->wBaudRate & 0x0080) ? " 1152000" : "", - (irda_desc->wBaudRate & 0x0100) ? " 4000000" : ""); - - switch( irda_desc->bmAdditionalBOFs ) { - case 0x01: ir_add_bof = 48; break; - case 0x02: ir_add_bof = 24; break; - case 0x04: ir_add_bof = 12; break; - case 0x08: ir_add_bof = 6; break; - case 0x10: ir_add_bof = 3; break; - case 0x20: ir_add_bof = 2; break; - case 0x40: ir_add_bof = 1; break; - case 0x80: ir_add_bof = 0; break; - default:; + (irda_desc->wBaudRate & USB_IRDA_BR_2400) ? " 2400" : "", + (irda_desc->wBaudRate & USB_IRDA_BR_9600) ? " 9600" : "", + (irda_desc->wBaudRate & USB_IRDA_BR_19200) ? " 19200" : "", + (irda_desc->wBaudRate & USB_IRDA_BR_38400) ? " 38400" : "", + (irda_desc->wBaudRate & USB_IRDA_BR_57600) ? " 57600" : "", + (irda_desc->wBaudRate & USB_IRDA_BR_115200) ? " 115200" : "", + (irda_desc->wBaudRate & USB_IRDA_BR_576000) ? " 576000" : "", + (irda_desc->wBaudRate & USB_IRDA_BR_1152000) ? " 1152000" : "", + (irda_desc->wBaudRate & USB_IRDA_BR_4000000) ? " 4000000" : ""); + + switch (irda_desc->bmAdditionalBOFs) { + case USB_IRDA_AB_48: + ir_add_bof = 48; + break; + case USB_IRDA_AB_24: + ir_add_bof = 24; + break; + case USB_IRDA_AB_12: + ir_add_bof = 12; + break; + case USB_IRDA_AB_6: + ir_add_bof = 6; + break; + case USB_IRDA_AB_3: + ir_add_bof = 3; + break; + case USB_IRDA_AB_2: + ir_add_bof = 2; + break; + case USB_IRDA_AB_1: + ir_add_bof = 1; + break; + case USB_IRDA_AB_0: + ir_add_bof = 0; + break; + default: + break; } - kfree (irda_desc); + kfree(irda_desc); - return 0; + return 0; } -static int ir_open (struct usb_serial_port *port, struct file *filp) +static int ir_open(struct usb_serial_port *port, struct file *filp) { char *buffer; int result = 0; @@ -285,51 +304,55 @@ static int ir_open (struct usb_serial_port *port, struct file *filp) if (buffer_size) { /* override the default buffer sizes */ - buffer = kmalloc (buffer_size, GFP_KERNEL); + buffer = kmalloc(buffer_size, GFP_KERNEL); if (!buffer) { - dev_err (&port->dev, "%s - out of memory.\n", __func__); + dev_err(&port->dev, "%s - out of memory.\n", __func__); return -ENOMEM; } - kfree (port->read_urb->transfer_buffer); + kfree(port->read_urb->transfer_buffer); port->read_urb->transfer_buffer = buffer; port->read_urb->transfer_buffer_length = buffer_size; - buffer = kmalloc (buffer_size, GFP_KERNEL); + buffer = kmalloc(buffer_size, GFP_KERNEL); if (!buffer) { - dev_err (&port->dev, "%s - out of memory.\n", __func__); + dev_err(&port->dev, "%s - out of memory.\n", __func__); return -ENOMEM; } - kfree (port->write_urb->transfer_buffer); + kfree(port->write_urb->transfer_buffer); port->write_urb->transfer_buffer = buffer; port->write_urb->transfer_buffer_length = buffer_size; port->bulk_out_size = buffer_size; } /* Start reading from the device */ - usb_fill_bulk_urb ( + usb_fill_bulk_urb( port->read_urb, - port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress), + port->serial->dev, + usb_rcvbulkpipe(port->serial->dev, + port->bulk_in_endpointAddress), port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, ir_read_bulk_callback, port); result = usb_submit_urb(port->read_urb, GFP_KERNEL); if (result) - dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __func__, result); + dev_err(&port->dev, + "%s - failed submitting read urb, error %d\n", + __func__, result); return result; } -static void ir_close (struct usb_serial_port *port, struct file * filp) +static void ir_close(struct usb_serial_port *port, struct file *filp) { dbg("%s - port %d", __func__, port->number); - + /* shutdown our bulk read */ usb_kill_urb(port->read_urb); } -static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int count) +static int ir_write(struct usb_serial_port *port, + const unsigned char *buf, int count) { unsigned char *transfer_buffer; int result; @@ -338,7 +361,7 @@ static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int dbg("%s - port = %d, count = %d", __func__, port->number, count); if (!port->tty) { - dev_err (&port->dev, "%s - no tty???\n", __func__); + dev_err(&port->dev, "%s - no tty???\n", __func__); return 0; } @@ -359,7 +382,7 @@ static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int /* * The first byte of the packet we send to the device contains an - * inband header which indicates an additional number of BOFs and + * inbound header which indicates an additional number of BOFs and * a baud rate change. * * See section 5.4.2.2 of the USB IrDA spec. @@ -367,9 +390,9 @@ static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int *transfer_buffer = ir_xbof | ir_baud; ++transfer_buffer; - memcpy (transfer_buffer, buf, transfer_size); + memcpy(transfer_buffer, buf, transfer_size); - usb_fill_bulk_urb ( + usb_fill_bulk_urb( port->write_urb, port->serial->dev, usb_sndbulkpipe(port->serial->dev, @@ -381,17 +404,19 @@ static int ir_write (struct usb_serial_port *port, const unsigned char *buf, int port->write_urb->transfer_flags = URB_ZERO_PACKET; - result = usb_submit_urb (port->write_urb, GFP_ATOMIC); + result = usb_submit_urb(port->write_urb, GFP_ATOMIC); if (result) { port->write_urb_busy = 0; - dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __func__, result); + dev_err(&port->dev, + "%s - failed submitting write urb, error %d\n", + __func__, result); } else result = transfer_size; return result; } -static void ir_write_bulk_callback (struct urb *urb) +static void ir_write_bulk_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; int status = urb->status; @@ -405,7 +430,7 @@ static void ir_write_bulk_callback (struct urb *urb) return; } - usb_serial_debug_data ( + usb_serial_debug_data( debug, &port->dev, __func__, @@ -415,7 +440,7 @@ static void ir_write_bulk_callback (struct urb *urb) usb_serial_port_softint(port); } -static void ir_read_bulk_callback (struct urb *urb) +static void ir_read_bulk_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; struct tty_struct *tty; @@ -431,68 +456,69 @@ static void ir_read_bulk_callback (struct urb *urb) } switch (status) { - case 0: /* Successful */ - - /* - * The first byte of the packet we get from the device - * contains a busy indicator and baud rate change. - * See section 5.4.1.2 of the USB IrDA spec. - */ - if ((*data & 0x0f) > 0) - ir_baud = *data & 0x0f; - - usb_serial_debug_data ( - debug, - &port->dev, - __func__, - urb->actual_length, - data); - - tty = port->tty; - - if (tty_buffer_request_room(tty, urb->actual_length - 1)) { - tty_insert_flip_string(tty, data+1, urb->actual_length - 1); - tty_flip_buffer_push(tty); - } - - /* - * No break here. - * We want to resubmit the urb so we can read - * again. - */ - - case -EPROTO: /* taking inspiration from pl2303.c */ - - /* Continue trying to always read */ - usb_fill_bulk_urb ( - port->read_urb, - port->serial->dev, - usb_rcvbulkpipe(port->serial->dev, - port->bulk_in_endpointAddress), - port->read_urb->transfer_buffer, - port->read_urb->transfer_buffer_length, - ir_read_bulk_callback, - port); - - result = usb_submit_urb(port->read_urb, GFP_ATOMIC); - if (result) - dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", - __func__, result); - - break ; - - default: - dbg("%s - nonzero read bulk status received: %d", - __func__, - status); - break ; + case 0: /* Successful */ + + /* + * The first byte of the packet we get from the device + * contains a busy indicator and baud rate change. + * See section 5.4.1.2 of the USB IrDA spec. + */ + if ((*data & 0x0f) > 0) + ir_baud = *data & 0x0f; + + usb_serial_debug_data( + debug, + &port->dev, + __func__, + urb->actual_length, + data); + + tty = port->tty; + + if (tty_buffer_request_room(tty, urb->actual_length - 1)) { + tty_insert_flip_string(tty, data + 1, + urb->actual_length - 1); + tty_flip_buffer_push(tty); + } + /* + * No break here. + * We want to resubmit the urb so we can read + * again. + */ + + case -EPROTO: /* taking inspiration from pl2303.c */ + + /* Continue trying to always read */ + usb_fill_bulk_urb( + port->read_urb, + port->serial->dev, + usb_rcvbulkpipe(port->serial->dev, + port->bulk_in_endpointAddress), + port->read_urb->transfer_buffer, + port->read_urb->transfer_buffer_length, + ir_read_bulk_callback, + port); + + result = usb_submit_urb(port->read_urb, GFP_ATOMIC); + if (result) + dev_err(&port->dev, + "%s - failed resubmitting read urb, error %d\n", + __func__, result); + break; + + default: + dbg("%s - nonzero read bulk status received: %d", + __func__, + status); + break; } return; } -static void ir_set_termios (struct usb_serial_port *port, struct ktermios *old_termios) +static void ir_set_termios(struct usb_serial_port *port, + struct ktermios *old_termios) { unsigned char *transfer_buffer; int result; @@ -510,19 +536,36 @@ static void ir_set_termios (struct usb_serial_port *port, struct ktermios *old_t */ switch (baud) { - case 2400: ir_baud = SPEED_2400; break; - case 9600: ir_baud = SPEED_9600; break; - case 19200: ir_baud = SPEED_19200; break; - case 38400: ir_baud = SPEED_38400; break; - case 57600: ir_baud = SPEED_57600; break; - case 115200: ir_baud = SPEED_115200; break; - case 576000: ir_baud = SPEED_576000; break; - case 1152000: ir_baud = SPEED_1152000; break; - case 4000000: ir_baud = SPEED_4000000; break; - break; - default: - ir_baud = SPEED_9600; - baud = 9600; + case 2400: + ir_baud = USB_IRDA_BR_2400; + break; + case 9600: + ir_baud = USB_IRDA_BR_9600; + break; + case 19200: + ir_baud = USB_IRDA_BR_19200; + break; + case 38400: + ir_baud = USB_IRDA_BR_38400; + break; + case 57600: + ir_baud = USB_IRDA_BR_57600; + break; + case 115200: + ir_baud = USB_IRDA_BR_115200; + break; + case 576000: + ir_baud = USB_IRDA_BR_576000; + break; + case 1152000: + ir_baud = USB_IRDA_BR_1152000; + break; + case 4000000: + ir_baud = USB_IRDA_BR_4000000; + break; + default: + ir_baud = USB_IRDA_BR_9600; + baud = 9600; } if (xbof == -1) @@ -538,10 +581,11 @@ static void ir_set_termios (struct usb_serial_port *port, struct ktermios *old_t transfer_buffer = port->write_urb->transfer_buffer; *transfer_buffer = ir_xbof | ir_baud; - usb_fill_bulk_urb ( + usb_fill_bulk_urb( port->write_urb, port->serial->dev, - usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), + usb_sndbulkpipe(port->serial->dev, + port->bulk_out_endpointAddress), port->write_urb->transfer_buffer, 1, ir_write_bulk_callback, @@ -549,38 +593,44 @@ static void ir_set_termios (struct usb_serial_port *port, struct ktermios *old_t port->write_urb->transfer_flags = URB_ZERO_PACKET; - result = usb_submit_urb (port->write_urb, GFP_KERNEL); + result = usb_submit_urb(port->write_urb, GFP_KERNEL); if (result) - dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __func__, result); + dev_err(&port->dev, + "%s - failed submitting write urb, error %d\n", + __func__, result); /* Only speed changes are supported */ tty_termios_copy_hw(port->tty->termios, old_termios); tty_encode_baud_rate(port->tty, baud, baud); } - -static int __init ir_init (void) +static int __init ir_init(void) { int retval; + retval = usb_serial_register(&ir_device); if (retval) goto failed_usb_serial_register; + retval = usb_register(&ir_driver); - if (retval) + if (retval) goto failed_usb_register; + info(DRIVER_DESC " " DRIVER_VERSION); + return 0; + failed_usb_register: usb_serial_deregister(&ir_device); + failed_usb_serial_register: return retval; } - -static void __exit ir_exit (void) +static void __exit ir_exit(void) { - usb_deregister (&ir_driver); - usb_serial_deregister (&ir_device); + usb_deregister(&ir_driver); + usb_serial_deregister(&ir_device); } diff --git a/drivers/usb/serial/keyspan.h b/drivers/usb/serial/keyspan.h index b52fb657a24..8bf72639b14 100644 --- a/drivers/usb/serial/keyspan.h +++ b/drivers/usb/serial/keyspan.h @@ -138,7 +138,8 @@ static int keyspan_usa67_send_setup (struct usb_serial *serial, /* Product IDs post-renumeration. Note that the 28x and 28xb have the same id's post-renumeration but behave identically - so it's not an issue. */ + so it's not an issue. As such, the 28xb is not listed in any + of the device tables. */ #define keyspan_usa18x_product_id 0x0112 #define keyspan_usa19_product_id 0x0107 #define keyspan_usa19qi_product_id 0x010c @@ -482,7 +483,6 @@ static struct usb_device_id keyspan_ids_combined[] = { { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_product_id) }, { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_product_id) }, { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_product_id) }, - { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xb_product_id) }, { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xg_product_id) }, { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_product_id)}, { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_product_id)}, @@ -532,7 +532,6 @@ static struct usb_device_id keyspan_2port_ids[] = { { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_product_id) }, { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_product_id) }, { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_product_id) }, - { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xb_product_id) }, { USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xg_product_id) }, { } /* Terminating entry */ }; diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c index 644a1eaaa37..60b3e22bd63 100644 --- a/drivers/usb/serial/keyspan_pda.c +++ b/drivers/usb/serial/keyspan_pda.c @@ -408,7 +408,7 @@ static int keyspan_pda_get_modem_info(struct usb_serial *serial, 3, /* get pins */ USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN, 0, 0, &data, 1, 2000); - if (rc > 0) + if (rc >= 0) *value = data; return rc; } diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index f328948d74e..79787eda952 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -236,7 +236,7 @@ static int klsi_105_get_line_state(struct usb_serial_port *port, if (rc < 0) err("Reading line status failed (error = %d)", rc); else { - status = le16_to_cpu(get_unaligned((__le16 *)status_buf)); + status = get_unaligned_le16(status_buf); info("%s - read status %x %x", __func__, status_buf[0], status_buf[1]); diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index a73420dd052..1e936a1cbe0 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -173,6 +173,7 @@ static int option_send_setup(struct usb_serial_port *port); #define DELL_VENDOR_ID 0x413C #define KYOCERA_VENDOR_ID 0x0c88 +#define KYOCERA_PRODUCT_KPC650 0x17da #define KYOCERA_PRODUCT_KPC680 0x180a #define ANYDATA_VENDOR_ID 0x16d5 @@ -305,6 +306,7 @@ static struct usb_device_id option_ids[] = { { USB_DEVICE(ONDA_VENDOR_ID, ONDA_PRODUCT_ET502HS) }, { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_1) }, { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_2) }, + { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC650) }, { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC680) }, { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6000)}, /* ZTE AC8700 */ { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */ diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 0cb0d77dc42..35379863190 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -283,7 +283,10 @@ static void serial_close(struct tty_struct *tty, struct file * filp) } if (port->open_count == 0) { - usb_autopm_put_interface(port->serial->interface); + mutex_lock(&port->serial->disc_mutex); + if (!port->serial->disconnected) + usb_autopm_put_interface(port->serial->interface); + mutex_unlock(&port->serial->disc_mutex); module_put(port->serial->type->driver.owner); } @@ -505,7 +508,7 @@ static void port_release(struct device *dev) { struct usb_serial_port *port = to_usb_serial_port(dev); - dbg ("%s - %s", __func__, dev->bus_id); + dbg ("%s - %s", __func__, dev_name(dev)); port_free(port); } @@ -625,7 +628,7 @@ int usb_serial_probe(struct usb_interface *interface, struct usb_endpoint_descriptor *bulk_out_endpoint[MAX_NUM_PORTS]; struct usb_serial_driver *type = NULL; int retval; - int minor; + unsigned int minor; int buffer_size; int i; int num_interrupt_in = 0; @@ -938,8 +941,8 @@ int usb_serial_probe(struct usb_interface *interface, port->dev.bus = &usb_serial_bus_type; port->dev.release = &port_release; - snprintf (&port->dev.bus_id[0], sizeof(port->dev.bus_id), "ttyUSB%d", port->number); - dbg ("%s - registering %s", __func__, port->dev.bus_id); + dev_set_name(&port->dev, "ttyUSB%d", port->number); + dbg ("%s - registering %s", __func__, dev_name(&port->dev)); retval = device_register(&port->dev); if (retval) dev_err(&port->dev, "Error registering port device, " diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c index f9fc926b56d..9ca4d4db1dd 100644 --- a/drivers/usb/serial/usb_debug.c +++ b/drivers/usb/serial/usb_debug.c @@ -15,6 +15,8 @@ #include <linux/usb.h> #include <linux/usb/serial.h> +#define USB_DEBUG_MAX_PACKET_SIZE 8 + static struct usb_device_id id_table [] = { { USB_DEVICE(0x0525, 0x127a) }, { }, @@ -29,6 +31,12 @@ static struct usb_driver debug_driver = { .no_dynamic_id = 1, }; +int usb_debug_open(struct usb_serial_port *port, struct file *filp) +{ + port->bulk_out_size = USB_DEBUG_MAX_PACKET_SIZE; + return usb_serial_generic_open(port, filp); +} + static struct usb_serial_driver debug_device = { .driver = { .owner = THIS_MODULE, @@ -36,6 +44,7 @@ static struct usb_serial_driver debug_device = { }, .id_table = id_table, .num_ports = 1, + .open = usb_debug_open, }; static int __init debug_init(void) diff --git a/drivers/usb/storage/datafab.c b/drivers/usb/storage/datafab.c index 579e9f52053..17f1ae23291 100644 --- a/drivers/usb/storage/datafab.c +++ b/drivers/usb/storage/datafab.c @@ -1,7 +1,5 @@ /* Driver for Datafab USB Compact Flash reader * - * $Id: datafab.c,v 1.7 2002/02/25 00:40:13 mdharm Exp $ - * * datafab driver v0.1: * * First release diff --git a/drivers/usb/storage/debug.c b/drivers/usb/storage/debug.c index 01e430654a1..a2b5526c9fa 100644 --- a/drivers/usb/storage/debug.c +++ b/drivers/usb/storage/debug.c @@ -1,8 +1,6 @@ /* Driver for USB Mass Storage compliant devices * Debugging Functions Source Code File * - * $Id: debug.c,v 1.9 2002/04/22 03:39:43 mdharm Exp $ - * * Current development and maintenance by: * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * diff --git a/drivers/usb/storage/debug.h b/drivers/usb/storage/debug.h index 77e244a8c37..dbb985d5242 100644 --- a/drivers/usb/storage/debug.h +++ b/drivers/usb/storage/debug.h @@ -1,8 +1,6 @@ /* Driver for USB Mass Storage compliant devices * Debugging Functions Header File * - * $Id: debug.h,v 1.6 2001/01/12 23:51:04 mdharm Exp $ - * * Current development and maintenance by: * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * diff --git a/drivers/usb/storage/dpcm.c b/drivers/usb/storage/dpcm.c index 9a410b5a6e5..939923471af 100644 --- a/drivers/usb/storage/dpcm.c +++ b/drivers/usb/storage/dpcm.c @@ -1,7 +1,5 @@ /* Driver for Microtech DPCM-USB CompactFlash/SmartMedia reader * - * $Id: dpcm.c,v 1.4 2001/06/11 02:54:25 mdharm Exp $ - * * DPCM driver v0.1: * * First release diff --git a/drivers/usb/storage/dpcm.h b/drivers/usb/storage/dpcm.h index 81b464cfcc1..e7b7b0f120d 100644 --- a/drivers/usb/storage/dpcm.h +++ b/drivers/usb/storage/dpcm.h @@ -1,7 +1,5 @@ /* Driver for Microtech DPCM-USB CompactFlash/SmartMedia reader * - * $Id: dpcm.h,v 1.2 2000/08/25 00:13:51 mdharm Exp $ - * * DPCM driver v0.1: * * First release diff --git a/drivers/usb/storage/freecom.c b/drivers/usb/storage/freecom.c index f5a4e8d6a3b..7a4d4567722 100644 --- a/drivers/usb/storage/freecom.c +++ b/drivers/usb/storage/freecom.c @@ -1,7 +1,5 @@ /* Driver for Freecom USB/IDE adaptor * - * $Id: freecom.c,v 1.22 2002/04/22 03:39:43 mdharm Exp $ - * * Freecom v0.1: * * First release diff --git a/drivers/usb/storage/freecom.h b/drivers/usb/storage/freecom.h index 1b012d62d0a..20d0fe6ba0c 100644 --- a/drivers/usb/storage/freecom.h +++ b/drivers/usb/storage/freecom.h @@ -1,7 +1,5 @@ /* Driver for Freecom USB/IDE adaptor * - * $Id: freecom.h,v 1.4 2000/08/29 14:49:15 dlbrown Exp $ - * * Freecom v0.1: * * First release diff --git a/drivers/usb/storage/initializers.c b/drivers/usb/storage/initializers.c index 187dd1e0109..4995bb595ae 100644 --- a/drivers/usb/storage/initializers.c +++ b/drivers/usb/storage/initializers.c @@ -1,7 +1,5 @@ /* Special Initializers for certain USB Mass Storage devices * - * $Id: initializers.c,v 1.2 2000/09/06 22:35:57 mdharm Exp $ - * * Current development and maintenance by: * (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * diff --git a/drivers/usb/storage/initializers.h b/drivers/usb/storage/initializers.h index ad3ffd4236c..529327fbb06 100644 --- a/drivers/usb/storage/initializers.h +++ b/drivers/usb/storage/initializers.h @@ -1,7 +1,5 @@ /* Header file for Special Initializers for certain USB Mass Storage devices * - * $Id: initializers.h,v 1.1 2000/08/29 23:07:02 mdharm Exp $ - * * Current development and maintenance by: * (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * diff --git a/drivers/usb/storage/isd200.c b/drivers/usb/storage/isd200.c index 3addcd8f827..383abf2516a 100644 --- a/drivers/usb/storage/isd200.c +++ b/drivers/usb/storage/isd200.c @@ -1,7 +1,5 @@ /* Transport & Protocol Driver for In-System Design, Inc. ISD200 ASIC * - * $Id: isd200.c,v 1.16 2002/04/22 03:39:43 mdharm Exp $ - * * Current development and maintenance: * (C) 2001-2002 Björn Stenberg (bjorn@haxx.se) * @@ -586,7 +584,7 @@ static void isd200_invoke_transport( struct us_data *us, /* if the command gets aborted by the higher layers, we need to * short-circuit all other processing */ - if (test_bit(US_FLIDX_TIMED_OUT, &us->flags)) { + if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { US_DEBUGP("-- command was aborted\n"); goto Handle_Abort; } @@ -633,7 +631,7 @@ static void isd200_invoke_transport( struct us_data *us, if (need_auto_sense) { result = isd200_read_regs(us); - if (test_bit(US_FLIDX_TIMED_OUT, &us->flags)) { + if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { US_DEBUGP("-- auto-sense aborted\n"); goto Handle_Abort; } @@ -663,7 +661,7 @@ static void isd200_invoke_transport( struct us_data *us, srb->result = DID_ABORT << 16; /* permit the reset transfer to take place */ - clear_bit(US_FLIDX_ABORTING, &us->flags); + clear_bit(US_FLIDX_ABORTING, &us->dflags); /* Need reset here */ } diff --git a/drivers/usb/storage/jumpshot.c b/drivers/usb/storage/jumpshot.c index 61097cbb158..df67f13c9e7 100644 --- a/drivers/usb/storage/jumpshot.c +++ b/drivers/usb/storage/jumpshot.c @@ -1,7 +1,5 @@ /* Driver for Lexar "Jumpshot" Compact Flash reader * - * $Id: jumpshot.c,v 1.7 2002/02/25 00:40:13 mdharm Exp $ - * * jumpshot driver v0.1: * * First release diff --git a/drivers/usb/storage/protocol.c b/drivers/usb/storage/protocol.c index b9b8ede61fb..3b3357e20ea 100644 --- a/drivers/usb/storage/protocol.c +++ b/drivers/usb/storage/protocol.c @@ -1,7 +1,5 @@ /* Driver for USB Mass Storage compliant devices * - * $Id: protocol.c,v 1.14 2002/04/22 03:39:43 mdharm Exp $ - * * Current development and maintenance by: * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * diff --git a/drivers/usb/storage/protocol.h b/drivers/usb/storage/protocol.h index 8737a36891c..487056ffb51 100644 --- a/drivers/usb/storage/protocol.h +++ b/drivers/usb/storage/protocol.h @@ -1,8 +1,6 @@ /* Driver for USB Mass Storage compliant devices * Protocol Functions Header File * - * $Id: protocol.h,v 1.4 2001/02/13 07:10:03 mdharm Exp $ - * * Current development and maintenance by: * (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index 3fcde9f0fa5..09779f6a817 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -1,8 +1,6 @@ /* Driver for USB Mass Storage compliant devices * SCSI layer glue code * - * $Id: scsiglue.c,v 1.26 2002/04/22 03:39:43 mdharm Exp $ - * * Current development and maintenance by: * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * @@ -73,7 +71,6 @@ static const char* host_info(struct Scsi_Host *host) static int slave_alloc (struct scsi_device *sdev) { struct us_data *us = host_to_us(sdev->host); - struct usb_host_endpoint *bulk_in_ep; /* * Set the INQUIRY transfer length to 36. We don't use any of @@ -82,16 +79,22 @@ static int slave_alloc (struct scsi_device *sdev) */ sdev->inquiry_len = 36; - /* Scatter-gather buffers (all but the last) must have a length - * divisible by the bulk maxpacket size. Otherwise a data packet - * would end up being short, causing a premature end to the data - * transfer. We'll use the maxpacket value of the bulk-IN pipe - * to set the SCSI device queue's DMA alignment mask. + /* USB has unusual DMA-alignment requirements: Although the + * starting address of each scatter-gather element doesn't matter, + * the length of each element except the last must be divisible + * by the Bulk maxpacket value. There's currently no way to + * express this by block-layer constraints, so we'll cop out + * and simply require addresses to be aligned at 512-byte + * boundaries. This is okay since most block I/O involves + * hardware sectors that are multiples of 512 bytes in length, + * and since host controllers up through USB 2.0 have maxpacket + * values no larger than 512. + * + * But it doesn't suffice for Wireless USB, where Bulk maxpacket + * values can be as large as 2048. To make that work properly + * will require changes to the block layer. */ - bulk_in_ep = us->pusb_dev->ep_in[usb_pipeendpoint(us->recv_bulk_pipe)]; - blk_queue_update_dma_alignment(sdev->request_queue, - le16_to_cpu(bulk_in_ep->desc.wMaxPacketSize) - 1); - /* wMaxPacketSize must be a power of 2 */ + blk_queue_update_dma_alignment(sdev->request_queue, (512 - 1)); /* * The UFI spec treates the Peripheral Qualifier bits in an @@ -116,10 +119,10 @@ static int slave_configure(struct scsi_device *sdev) * while others have trouble with more than 64K. At this time we * are limiting both to 32K (64 sectores). */ - if (us->flags & (US_FL_MAX_SECTORS_64 | US_FL_MAX_SECTORS_MIN)) { + if (us->fflags & (US_FL_MAX_SECTORS_64 | US_FL_MAX_SECTORS_MIN)) { unsigned int max_sectors = 64; - if (us->flags & US_FL_MAX_SECTORS_MIN) + if (us->fflags & US_FL_MAX_SECTORS_MIN) max_sectors = PAGE_CACHE_SIZE >> 9; if (sdev->request_queue->max_sectors > max_sectors) blk_queue_max_sectors(sdev->request_queue, @@ -148,7 +151,7 @@ static int slave_configure(struct scsi_device *sdev) * majority of devices work fine, but a few still can't * handle it. The sd driver will simply assume those * devices are write-enabled. */ - if (us->flags & US_FL_NO_WP_DETECT) + if (us->fflags & US_FL_NO_WP_DETECT) sdev->skip_ms_page_3f = 1; /* A number of devices have problems with MODE SENSE for @@ -158,13 +161,13 @@ static int slave_configure(struct scsi_device *sdev) /* Some disks return the total number of blocks in response * to READ CAPACITY rather than the highest block number. * If this device makes that mistake, tell the sd driver. */ - if (us->flags & US_FL_FIX_CAPACITY) + if (us->fflags & US_FL_FIX_CAPACITY) sdev->fix_capacity = 1; /* A few disks have two indistinguishable version, one of * which reports the correct capacity and the other does not. * The sd driver has to guess which is the case. */ - if (us->flags & US_FL_CAPACITY_HEURISTICS) + if (us->fflags & US_FL_CAPACITY_HEURISTICS) sdev->guess_capacity = 1; /* Some devices report a SCSI revision level above 2 but are @@ -213,7 +216,7 @@ static int slave_configure(struct scsi_device *sdev) /* Some devices choke when they receive a PREVENT-ALLOW MEDIUM * REMOVAL command, so suppress those commands. */ - if (us->flags & US_FL_NOT_LOCKABLE) + if (us->fflags & US_FL_NOT_LOCKABLE) sdev->lockable = 0; /* this is to satisfy the compiler, tho I don't think the @@ -238,7 +241,7 @@ static int queuecommand(struct scsi_cmnd *srb, } /* fail the command if we are disconnecting */ - if (test_bit(US_FLIDX_DISCONNECTING, &us->flags)) { + if (test_bit(US_FLIDX_DISCONNECTING, &us->dflags)) { US_DEBUGP("Fail command during disconnect\n"); srb->result = DID_NO_CONNECT << 16; done(srb); @@ -248,7 +251,7 @@ static int queuecommand(struct scsi_cmnd *srb, /* enqueue the command and wake up the control thread */ srb->scsi_done = done; us->srb = srb; - up(&(us->sema)); + complete(&us->cmnd_ready); return 0; } @@ -280,9 +283,9 @@ static int command_abort(struct scsi_cmnd *srb) * with the reset). Note that we must retain the host lock while * calling usb_stor_stop_transport(); otherwise it might interfere * with an auto-reset that begins as soon as we release the lock. */ - set_bit(US_FLIDX_TIMED_OUT, &us->flags); - if (!test_bit(US_FLIDX_RESETTING, &us->flags)) { - set_bit(US_FLIDX_ABORTING, &us->flags); + set_bit(US_FLIDX_TIMED_OUT, &us->dflags); + if (!test_bit(US_FLIDX_RESETTING, &us->dflags)) { + set_bit(US_FLIDX_ABORTING, &us->dflags); usb_stor_stop_transport(us); } scsi_unlock(us_to_host(us)); @@ -329,7 +332,7 @@ void usb_stor_report_device_reset(struct us_data *us) struct Scsi_Host *host = us_to_host(us); scsi_report_device_reset(host, 0, 0); - if (us->flags & US_FL_SCM_MULT_TARG) { + if (us->fflags & US_FL_SCM_MULT_TARG) { for (i = 1; i < host->max_id; ++i) scsi_report_device_reset(host, 0, i); } @@ -400,7 +403,7 @@ static int proc_info (struct Scsi_Host *host, char *buffer, pos += sprintf(pos, " Quirks:"); #define US_FLAG(name, value) \ - if (us->flags & value) pos += sprintf(pos, " " #name); + if (us->fflags & value) pos += sprintf(pos, " " #name); US_DO_ALL_FLAGS #undef US_FLAG diff --git a/drivers/usb/storage/scsiglue.h b/drivers/usb/storage/scsiglue.h index 737e4fa6045..ffa1cca93d2 100644 --- a/drivers/usb/storage/scsiglue.h +++ b/drivers/usb/storage/scsiglue.h @@ -1,8 +1,6 @@ /* Driver for USB Mass Storage compliant devices * SCSI Connecting Glue Header File * - * $Id: scsiglue.h,v 1.4 2000/08/25 00:13:51 mdharm Exp $ - * * Current development and maintenance by: * (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * diff --git a/drivers/usb/storage/sddr09.c b/drivers/usb/storage/sddr09.c index 8972b17da84..c5a54b872c2 100644 --- a/drivers/usb/storage/sddr09.c +++ b/drivers/usb/storage/sddr09.c @@ -1,6 +1,5 @@ /* Driver for SanDisk SDDR-09 SmartMedia reader * - * $Id: sddr09.c,v 1.24 2002/04/22 03:39:43 mdharm Exp $ * (c) 2000, 2001 Robert Baruch (autophile@starband.net) * (c) 2002 Andries Brouwer (aeb@cwi.nl) * Developed with the assistance of: diff --git a/drivers/usb/storage/sddr09.h b/drivers/usb/storage/sddr09.h index c03089a9ec3..e50033ad7b1 100644 --- a/drivers/usb/storage/sddr09.h +++ b/drivers/usb/storage/sddr09.h @@ -1,8 +1,6 @@ /* Driver for SanDisk SDDR-09 SmartMedia reader * Header File * - * $Id: sddr09.h,v 1.5 2000/08/25 00:13:51 mdharm Exp $ - * * Current development and maintenance by: * (c) 2000 Robert Baruch (autophile@dol.net) * (c) 2002 Andries Brouwer (aeb@cwi.nl) diff --git a/drivers/usb/storage/sddr55.c b/drivers/usb/storage/sddr55.c index 6d14327c921..0d8df757789 100644 --- a/drivers/usb/storage/sddr55.c +++ b/drivers/usb/storage/sddr55.c @@ -1,7 +1,5 @@ /* Driver for SanDisk SDDR-55 SmartMedia reader * - * $Id:$ - * * SDDR55 driver v0.1: * * First release diff --git a/drivers/usb/storage/sddr55.h b/drivers/usb/storage/sddr55.h index d6bd32f6c9f..a815a0470c8 100644 --- a/drivers/usb/storage/sddr55.h +++ b/drivers/usb/storage/sddr55.h @@ -1,8 +1,6 @@ /* Driver for SanDisk SDDR-55 SmartMedia reader * Header File * - * $Id:$ - * * Current development and maintenance by: * (c) 2002 Simon Munton * diff --git a/drivers/usb/storage/shuttle_usbat.c b/drivers/usb/storage/shuttle_usbat.c index 570c1250f6f..ae6d64810d2 100644 --- a/drivers/usb/storage/shuttle_usbat.c +++ b/drivers/usb/storage/shuttle_usbat.c @@ -1,7 +1,5 @@ /* Driver for SCM Microsystems (a.k.a. Shuttle) USB-ATAPI cable * - * $Id: shuttle_usbat.c,v 1.17 2002/04/22 03:39:43 mdharm Exp $ - * * Current development and maintenance by: * (c) 2000, 2001 Robert Baruch (autophile@starband.net) * (c) 2004, 2005 Daniel Drake <dsd@gentoo.org> diff --git a/drivers/usb/storage/shuttle_usbat.h b/drivers/usb/storage/shuttle_usbat.h index 3ddf143a1de..d8bfc43e904 100644 --- a/drivers/usb/storage/shuttle_usbat.h +++ b/drivers/usb/storage/shuttle_usbat.h @@ -1,8 +1,6 @@ /* Driver for SCM Microsystems USB-ATAPI cable * Header File * - * $Id: shuttle_usbat.h,v 1.5 2000/09/17 14:44:52 groovyjava Exp $ - * * Current development and maintenance by: * (c) 2000 Robert Baruch (autophile@dol.net) * (c) 2004, 2005 Daniel Drake <dsd@gentoo.org> diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c index 6610d2dd1e7..fcbbfdb7b2b 100644 --- a/drivers/usb/storage/transport.c +++ b/drivers/usb/storage/transport.c @@ -1,7 +1,5 @@ /* Driver for USB Mass Storage compliant devices * - * $Id: transport.c,v 1.47 2002/04/22 03:39:43 mdharm Exp $ - * * Current development and maintenance by: * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * @@ -75,14 +73,14 @@ * by a separate code path.) * * The abort function (usb_storage_command_abort() in scsiglue.c) first - * sets the machine state and the ABORTING bit in us->flags to prevent + * sets the machine state and the ABORTING bit in us->dflags to prevent * new URBs from being submitted. It then calls usb_stor_stop_transport() - * below, which atomically tests-and-clears the URB_ACTIVE bit in us->flags + * below, which atomically tests-and-clears the URB_ACTIVE bit in us->dflags * to see if the current_urb needs to be stopped. Likewise, the SG_ACTIVE * bit is tested to see if the current_sg scatter-gather request needs to be * stopped. The timeout callback routine does much the same thing. * - * When a disconnect occurs, the DISCONNECTING bit in us->flags is set to + * When a disconnect occurs, the DISCONNECTING bit in us->dflags is set to * prevent new URBs from being submitted, and usb_stor_stop_transport() is * called to stop any ongoing requests. * @@ -127,8 +125,8 @@ static int usb_stor_msg_common(struct us_data *us, int timeout) long timeleft; int status; - /* don't submit URBs during abort/disconnect processing */ - if (us->flags & ABORTING_OR_DISCONNECTING) + /* don't submit URBs during abort processing */ + if (test_bit(US_FLIDX_ABORTING, &us->dflags)) return -EIO; /* set up data structures for the wakeup system */ @@ -159,13 +157,13 @@ static int usb_stor_msg_common(struct us_data *us, int timeout) /* since the URB has been submitted successfully, it's now okay * to cancel it */ - set_bit(US_FLIDX_URB_ACTIVE, &us->flags); + set_bit(US_FLIDX_URB_ACTIVE, &us->dflags); - /* did an abort/disconnect occur during the submission? */ - if (us->flags & ABORTING_OR_DISCONNECTING) { + /* did an abort occur during the submission? */ + if (test_bit(US_FLIDX_ABORTING, &us->dflags)) { /* cancel the URB, if it hasn't been cancelled already */ - if (test_and_clear_bit(US_FLIDX_URB_ACTIVE, &us->flags)) { + if (test_and_clear_bit(US_FLIDX_URB_ACTIVE, &us->dflags)) { US_DEBUGP("-- cancelling URB\n"); usb_unlink_urb(us->current_urb); } @@ -175,7 +173,7 @@ static int usb_stor_msg_common(struct us_data *us, int timeout) timeleft = wait_for_completion_interruptible_timeout( &urb_done, timeout ? : MAX_SCHEDULE_TIMEOUT); - clear_bit(US_FLIDX_URB_ACTIVE, &us->flags); + clear_bit(US_FLIDX_URB_ACTIVE, &us->dflags); if (timeleft <= 0) { US_DEBUGP("%s -- cancelling URB\n", @@ -419,8 +417,8 @@ static int usb_stor_bulk_transfer_sglist(struct us_data *us, unsigned int pipe, { int result; - /* don't submit s-g requests during abort/disconnect processing */ - if (us->flags & ABORTING_OR_DISCONNECTING) + /* don't submit s-g requests during abort processing */ + if (test_bit(US_FLIDX_ABORTING, &us->dflags)) return USB_STOR_XFER_ERROR; /* initialize the scatter-gather request block */ @@ -435,13 +433,13 @@ static int usb_stor_bulk_transfer_sglist(struct us_data *us, unsigned int pipe, /* since the block has been initialized successfully, it's now * okay to cancel it */ - set_bit(US_FLIDX_SG_ACTIVE, &us->flags); + set_bit(US_FLIDX_SG_ACTIVE, &us->dflags); - /* did an abort/disconnect occur during the submission? */ - if (us->flags & ABORTING_OR_DISCONNECTING) { + /* did an abort occur during the submission? */ + if (test_bit(US_FLIDX_ABORTING, &us->dflags)) { /* cancel the request, if it hasn't been cancelled already */ - if (test_and_clear_bit(US_FLIDX_SG_ACTIVE, &us->flags)) { + if (test_and_clear_bit(US_FLIDX_SG_ACTIVE, &us->dflags)) { US_DEBUGP("-- cancelling sg request\n"); usb_sg_cancel(&us->current_sg); } @@ -449,7 +447,7 @@ static int usb_stor_bulk_transfer_sglist(struct us_data *us, unsigned int pipe, /* wait for the completion of the transfer */ usb_sg_wait(&us->current_sg); - clear_bit(US_FLIDX_SG_ACTIVE, &us->flags); + clear_bit(US_FLIDX_SG_ACTIVE, &us->dflags); result = us->current_sg.status; if (act_len) @@ -530,7 +528,7 @@ void usb_stor_invoke_transport(struct scsi_cmnd *srb, struct us_data *us) /* if the command gets aborted by the higher layers, we need to * short-circuit all other processing */ - if (test_bit(US_FLIDX_TIMED_OUT, &us->flags)) { + if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { US_DEBUGP("-- command was aborted\n"); srb->result = DID_ABORT << 16; goto Handle_Errors; @@ -616,7 +614,7 @@ void usb_stor_invoke_transport(struct scsi_cmnd *srb, struct us_data *us) /* let's clean up right away */ scsi_eh_restore_cmnd(srb, &ses); - if (test_bit(US_FLIDX_TIMED_OUT, &us->flags)) { + if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { US_DEBUGP("-- auto-sense aborted\n"); srb->result = DID_ABORT << 16; goto Handle_Errors; @@ -629,7 +627,7 @@ void usb_stor_invoke_transport(struct scsi_cmnd *srb, struct us_data *us) * auto-sense is perfectly valid */ srb->result = DID_ERROR << 16; - if (!(us->flags & US_FL_SCM_MULT_TARG)) + if (!(us->fflags & US_FL_SCM_MULT_TARG)) goto Handle_Errors; return; } @@ -679,8 +677,8 @@ void usb_stor_invoke_transport(struct scsi_cmnd *srb, struct us_data *us) /* Set the RESETTING bit, and clear the ABORTING bit so that * the reset may proceed. */ scsi_lock(us_to_host(us)); - set_bit(US_FLIDX_RESETTING, &us->flags); - clear_bit(US_FLIDX_ABORTING, &us->flags); + set_bit(US_FLIDX_RESETTING, &us->dflags); + clear_bit(US_FLIDX_ABORTING, &us->dflags); scsi_unlock(us_to_host(us)); /* We must release the device lock because the pre_reset routine @@ -695,7 +693,7 @@ void usb_stor_invoke_transport(struct scsi_cmnd *srb, struct us_data *us) scsi_unlock(us_to_host(us)); us->transport_reset(us); } - clear_bit(US_FLIDX_RESETTING, &us->flags); + clear_bit(US_FLIDX_RESETTING, &us->dflags); } /* Stop the current URB transfer */ @@ -707,13 +705,13 @@ void usb_stor_stop_transport(struct us_data *us) * let's wake it up. The test_and_clear_bit() call * guarantees that if a URB has just been submitted, * it won't be cancelled more than once. */ - if (test_and_clear_bit(US_FLIDX_URB_ACTIVE, &us->flags)) { + if (test_and_clear_bit(US_FLIDX_URB_ACTIVE, &us->dflags)) { US_DEBUGP("-- cancelling URB\n"); usb_unlink_urb(us->current_urb); } /* If we are waiting for a scatter-gather operation, cancel it. */ - if (test_and_clear_bit(US_FLIDX_SG_ACTIVE, &us->flags)) { + if (test_and_clear_bit(US_FLIDX_SG_ACTIVE, &us->dflags)) { US_DEBUGP("-- cancelling sg request\n"); usb_sg_cancel(&us->current_sg); } @@ -914,7 +912,7 @@ int usb_stor_Bulk_transport(struct scsi_cmnd *srb, struct us_data *us) unsigned int cbwlen = US_BULK_CB_WRAP_LEN; /* Take care of BULK32 devices; set extra byte to 0 */ - if ( unlikely(us->flags & US_FL_BULK32)) { + if (unlikely(us->fflags & US_FL_BULK32)) { cbwlen = 32; us->iobuf[31] = 0; } @@ -925,7 +923,7 @@ int usb_stor_Bulk_transport(struct scsi_cmnd *srb, struct us_data *us) bcb->Flags = srb->sc_data_direction == DMA_FROM_DEVICE ? 1 << 7 : 0; bcb->Tag = ++us->tag; bcb->Lun = srb->device->lun; - if (us->flags & US_FL_SCM_MULT_TARG) + if (us->fflags & US_FL_SCM_MULT_TARG) bcb->Lun |= srb->device->id << 4; bcb->Length = srb->cmd_len; @@ -951,7 +949,7 @@ int usb_stor_Bulk_transport(struct scsi_cmnd *srb, struct us_data *us) /* Some USB-IDE converter chips need a 100us delay between the * command phase and the data phase. Some devices need a little * more than that, probably because of clock rate inaccuracies. */ - if (unlikely(us->flags & US_FL_GO_SLOW)) + if (unlikely(us->fflags & US_FL_GO_SLOW)) udelay(125); if (transfer_length) { @@ -1010,7 +1008,7 @@ int usb_stor_Bulk_transport(struct scsi_cmnd *srb, struct us_data *us) US_DEBUGP("Bulk Status S 0x%x T 0x%x R %u Stat 0x%x\n", le32_to_cpu(bcs->Signature), bcs->Tag, residue, bcs->Status); - if (!(bcs->Tag == us->tag || (us->flags & US_FL_BULK_IGNORE_TAG)) || + if (!(bcs->Tag == us->tag || (us->fflags & US_FL_BULK_IGNORE_TAG)) || bcs->Status > US_BULK_STAT_PHASE) { US_DEBUGP("Bulk logical error\n"); return USB_STOR_TRANSPORT_ERROR; @@ -1035,7 +1033,7 @@ int usb_stor_Bulk_transport(struct scsi_cmnd *srb, struct us_data *us) /* try to compute the actual residue, based on how much data * was really transferred and what the device tells us */ if (residue) { - if (!(us->flags & US_FL_IGNORE_RESIDUE)) { + if (!(us->fflags & US_FL_IGNORE_RESIDUE)) { residue = min(residue, transfer_length); scsi_set_resid(srb, max(scsi_get_resid(srb), (int) residue)); @@ -1090,7 +1088,7 @@ static int usb_stor_reset_common(struct us_data *us, int result; int result2; - if (test_bit(US_FLIDX_DISCONNECTING, &us->flags)) { + if (test_bit(US_FLIDX_DISCONNECTING, &us->dflags)) { US_DEBUGP("No reset during disconnect\n"); return -EIO; } @@ -1103,12 +1101,12 @@ static int usb_stor_reset_common(struct us_data *us, return result; } - /* Give the device some time to recover from the reset, - * but don't delay disconnect processing. */ - wait_event_interruptible_timeout(us->delay_wait, - test_bit(US_FLIDX_DISCONNECTING, &us->flags), - HZ*6); - if (test_bit(US_FLIDX_DISCONNECTING, &us->flags)) { + /* Give the device some time to recover from the reset, + * but don't delay disconnect processing. */ + wait_event_interruptible_timeout(us->delay_wait, + test_bit(US_FLIDX_DISCONNECTING, &us->dflags), + HZ*6); + if (test_bit(US_FLIDX_DISCONNECTING, &us->dflags)) { US_DEBUGP("Reset interrupted by disconnect\n"); return -EIO; } @@ -1170,13 +1168,12 @@ int usb_stor_port_reset(struct us_data *us) US_DEBUGP("unable to lock device for reset: %d\n", result); else { /* Were we disconnected while waiting for the lock? */ - if (test_bit(US_FLIDX_DISCONNECTING, &us->flags)) { + if (test_bit(US_FLIDX_DISCONNECTING, &us->dflags)) { result = -EIO; US_DEBUGP("No reset during disconnect\n"); } else { - result = usb_reset_composite_device( - us->pusb_dev, us->pusb_intf); - US_DEBUGP("usb_reset_composite_device returns %d\n", + result = usb_reset_device(us->pusb_dev); + US_DEBUGP("usb_reset_device returns %d\n", result); } if (rc_lock) diff --git a/drivers/usb/storage/transport.h b/drivers/usb/storage/transport.h index ada7c2f43f8..e70b88182f0 100644 --- a/drivers/usb/storage/transport.h +++ b/drivers/usb/storage/transport.h @@ -1,8 +1,6 @@ /* Driver for USB Mass Storage compliant devices * Transport Functions Header File * - * $Id: transport.h,v 1.18 2002/04/21 02:57:59 mdharm Exp $ - * * Current development and maintenance by: * (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 39a7c11795c..7ae69f55aa9 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -1,8 +1,6 @@ /* Driver for USB Mass Storage compliant devices * Unusual Devices File * - * $Id: unusual_devs.h,v 1.32 2002/02/25 02:41:24 mdharm Exp $ - * * Current development and maintenance by: * (c) 2000-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * @@ -1234,6 +1232,17 @@ UNUSUAL_DEV( 0x0851, 0x1543, 0x0200, 0x0200, US_SC_DEVICE, US_PR_DEVICE, NULL, US_FL_NOT_LOCKABLE), +/* Andrew Lunn <andrew@lunn.ch> + * PanDigital Digital Picture Frame. Does not like ALLOW_MEDIUM_REMOVAL + * on LUN 4. + * Note: Vend:Prod clash with "Ltd Maxell WS30 Slim Digital Camera" +*/ +UNUSUAL_DEV( 0x0851, 0x1543, 0x0200, 0x0200, + "PanDigital", + "Photo Frame", + US_SC_DEVICE, US_PR_DEVICE, NULL, + US_FL_NOT_LOCKABLE), + /* Submitted by Jan De Luyck <lkml@kcore.org> */ UNUSUAL_DEV( 0x08bd, 0x1100, 0x0000, 0x0000, "CITIZEN", diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index e268aacb773..bfea851be98 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -1,7 +1,5 @@ /* Driver for USB Mass Storage compliant devices * - * $Id: usb.c,v 1.75 2002/04/22 03:39:43 mdharm Exp $ - * * Current development and maintenance by: * (c) 1999-2003 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * @@ -312,26 +310,27 @@ static int usb_stor_control_thread(void * __us) for(;;) { US_DEBUGP("*** thread sleeping.\n"); - if(down_interruptible(&us->sema)) + if (wait_for_completion_interruptible(&us->cmnd_ready)) break; - + US_DEBUGP("*** thread awakened.\n"); /* lock the device pointers */ mutex_lock(&(us->dev_mutex)); - /* if the device has disconnected, we are free to exit */ - if (test_bit(US_FLIDX_DISCONNECTING, &us->flags)) { - US_DEBUGP("-- exiting\n"); + /* lock access to the state */ + scsi_lock(host); + + /* When we are called with no command pending, we're done */ + if (us->srb == NULL) { + scsi_unlock(host); mutex_unlock(&us->dev_mutex); + US_DEBUGP("-- exiting\n"); break; } - /* lock access to the state */ - scsi_lock(host); - /* has the command timed out *already* ? */ - if (test_bit(US_FLIDX_TIMED_OUT, &us->flags)) { + if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { us->srb->result = DID_ABORT << 16; goto SkipForAbort; } @@ -350,7 +349,7 @@ static int usb_stor_control_thread(void * __us) * the maximum known LUN */ else if (us->srb->device->id && - !(us->flags & US_FL_SCM_MULT_TARG)) { + !(us->fflags & US_FL_SCM_MULT_TARG)) { US_DEBUGP("Bad target number (%d:%d)\n", us->srb->device->id, us->srb->device->lun); us->srb->result = DID_BAD_TARGET << 16; @@ -365,7 +364,7 @@ static int usb_stor_control_thread(void * __us) /* Handle those devices which need us to fake * their inquiry data */ else if ((us->srb->cmnd[0] == INQUIRY) && - (us->flags & US_FL_FIX_INQUIRY)) { + (us->fflags & US_FL_FIX_INQUIRY)) { unsigned char data_ptr[36] = { 0x00, 0x80, 0x02, 0x02, 0x1F, 0x00, 0x00, 0x00}; @@ -384,12 +383,8 @@ static int usb_stor_control_thread(void * __us) /* lock access to the state */ scsi_lock(host); - /* did the command already complete because of a disconnect? */ - if (!us->srb) - ; /* nothing to do */ - /* indicate that the command is done */ - else if (us->srb->result != DID_ABORT << 16) { + if (us->srb->result != DID_ABORT << 16) { US_DEBUGP("scsi cmd done, result=0x%x\n", us->srb->result); us->srb->scsi_done(us->srb); @@ -403,12 +398,12 @@ SkipForAbort: * the TIMED_OUT flag, not srb->result == DID_ABORT, because * the timeout might have occurred after the command had * already completed with a different result code. */ - if (test_bit(US_FLIDX_TIMED_OUT, &us->flags)) { + if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) { complete(&(us->notify)); /* Allow USB transfers to resume */ - clear_bit(US_FLIDX_ABORTING, &us->flags); - clear_bit(US_FLIDX_TIMED_OUT, &us->flags); + clear_bit(US_FLIDX_ABORTING, &us->dflags); + clear_bit(US_FLIDX_TIMED_OUT, &us->dflags); } /* finished working on this command */ @@ -500,9 +495,9 @@ static int get_device_info(struct us_data *us, const struct usb_device_id *id) us->protocol = (unusual_dev->useTransport == US_PR_DEVICE) ? idesc->bInterfaceProtocol : unusual_dev->useTransport; - us->flags = USB_US_ORIG_FLAGS(id->driver_info); + us->fflags = USB_US_ORIG_FLAGS(id->driver_info); - if (us->flags & US_FL_IGNORE_DEVICE) { + if (us->fflags & US_FL_IGNORE_DEVICE) { printk(KERN_INFO USB_STORAGE "device ignored\n"); return -ENODEV; } @@ -512,7 +507,7 @@ static int get_device_info(struct us_data *us, const struct usb_device_id *id) * disable it if we're in full-speed */ if (dev->speed != USB_SPEED_HIGH) - us->flags &= ~US_FL_GO_SLOW; + us->fflags &= ~US_FL_GO_SLOW; /* Log a message if a non-generic unusual_dev entry contains an * unnecessary subclass or protocol override. This may stimulate @@ -533,7 +528,7 @@ static int get_device_info(struct us_data *us, const struct usb_device_id *id) if (unusual_dev->useTransport != US_PR_DEVICE && us->protocol == idesc->bInterfaceProtocol) msg += 2; - if (msg >= 0 && !(us->flags & US_FL_NEED_OVERRIDE)) + if (msg >= 0 && !(us->fflags & US_FL_NEED_OVERRIDE)) printk(KERN_NOTICE USB_STORAGE "This device " "(%04x,%04x,%04x S %02x P %02x)" " has %s in unusual_devs.h (kernel" @@ -663,7 +658,7 @@ static int get_transport(struct us_data *us) US_DEBUGP("Transport: %s\n", us->transport_name); /* fix for single-lun devices */ - if (us->flags & US_FL_SINGLE_LUN) + if (us->fflags & US_FL_SINGLE_LUN) us->max_lun = 0; return 0; } @@ -820,12 +815,11 @@ static void usb_stor_release_resources(struct us_data *us) US_DEBUGP("-- %s\n", __func__); /* Tell the control thread to exit. The SCSI host must - * already have been removed so it won't try to queue - * any more commands. + * already have been removed and the DISCONNECTING flag set + * so that we won't accept any more commands. */ US_DEBUGP("-- sending exit command to thread\n"); - set_bit(US_FLIDX_DISCONNECTING, &us->flags); - up(&us->sema); + complete(&us->cmnd_ready); if (us->ctl_thread) kthread_stop(us->ctl_thread); @@ -859,39 +853,36 @@ static void dissociate_dev(struct us_data *us) usb_set_intfdata(us->pusb_intf, NULL); } -/* First stage of disconnect processing: stop all commands and remove - * the host */ +/* First stage of disconnect processing: stop SCSI scanning, + * remove the host, and stop accepting new commands + */ static void quiesce_and_remove_host(struct us_data *us) { struct Scsi_Host *host = us_to_host(us); - /* Prevent new USB transfers, stop the current command, and - * interrupt a SCSI-scan or device-reset delay */ - scsi_lock(host); - set_bit(US_FLIDX_DISCONNECTING, &us->flags); - scsi_unlock(host); - usb_stor_stop_transport(us); - wake_up(&us->delay_wait); + /* If the device is really gone, cut short reset delays */ + if (us->pusb_dev->state == USB_STATE_NOTATTACHED) + set_bit(US_FLIDX_DISCONNECTING, &us->dflags); - /* queuecommand won't accept any new commands and the control - * thread won't execute a previously-queued command. If there - * is such a command pending, complete it with an error. */ - mutex_lock(&us->dev_mutex); - if (us->srb) { - us->srb->result = DID_NO_CONNECT << 16; - scsi_lock(host); - us->srb->scsi_done(us->srb); - us->srb = NULL; - complete(&us->notify); /* in case of an abort */ - scsi_unlock(host); - } - mutex_unlock(&us->dev_mutex); + /* Prevent SCSI-scanning (if it hasn't started yet) + * and wait for the SCSI-scanning thread to stop. + */ + set_bit(US_FLIDX_DONT_SCAN, &us->dflags); + wake_up(&us->delay_wait); + wait_for_completion(&us->scanning_done); - /* Now we own no commands so it's safe to remove the SCSI host */ + /* Removing the host will perform an orderly shutdown: caches + * synchronized, disks spun down, etc. + */ scsi_remove_host(host); - /* Wait for the SCSI-scanning thread to stop */ - wait_for_completion(&us->scanning_done); + /* Prevent any new commands from being accepted and cut short + * reset delays. + */ + scsi_lock(host); + set_bit(US_FLIDX_DISCONNECTING, &us->dflags); + scsi_unlock(host); + wake_up(&us->delay_wait); } /* Second stage of disconnect processing: deallocate all resources */ @@ -919,16 +910,16 @@ static int usb_stor_scan_thread(void * __us) printk(KERN_DEBUG "usb-storage: waiting for device " "to settle before scanning\n"); wait_event_freezable_timeout(us->delay_wait, - test_bit(US_FLIDX_DISCONNECTING, &us->flags), + test_bit(US_FLIDX_DONT_SCAN, &us->dflags), delay_use * HZ); } /* If the device is still connected, perform the scanning */ - if (!test_bit(US_FLIDX_DISCONNECTING, &us->flags)) { + if (!test_bit(US_FLIDX_DONT_SCAN, &us->dflags)) { /* For bulk-only devices, determine the max LUN value */ if (us->protocol == US_PR_BULK && - !(us->flags & US_FL_SINGLE_LUN)) { + !(us->fflags & US_FL_SINGLE_LUN)) { mutex_lock(&us->dev_mutex); us->max_lun = usb_stor_Bulk_max_lun(us); mutex_unlock(&us->dev_mutex); @@ -975,7 +966,7 @@ static int storage_probe(struct usb_interface *intf, us = host_to_us(host); memset(us, 0, sizeof(struct us_data)); mutex_init(&(us->dev_mutex)); - init_MUTEX_LOCKED(&(us->sema)); + init_completion(&us->cmnd_ready); init_completion(&(us->notify)); init_waitqueue_head(&us->delay_wait); init_completion(&us->scanning_done); @@ -1023,6 +1014,7 @@ static int storage_probe(struct usb_interface *intf, if (IS_ERR(th)) { printk(KERN_WARNING USB_STORAGE "Unable to start the device-scanning thread\n"); + complete(&us->scanning_done); quiesce_and_remove_host(us); result = PTR_ERR(th); goto BadDevice; @@ -1065,6 +1057,7 @@ static struct usb_driver usb_storage_driver = { .pre_reset = storage_pre_reset, .post_reset = storage_post_reset, .id_table = storage_usb_ids, + .soft_unbind = 1, }; static int __init usb_stor_init(void) diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h index 8d87503e256..a4ad73bd832 100644 --- a/drivers/usb/storage/usb.h +++ b/drivers/usb/storage/usb.h @@ -1,8 +1,6 @@ /* Driver for USB Mass Storage compliant devices * Main Header File * - * $Id: usb.h,v 1.21 2002/04/21 02:57:59 mdharm Exp $ - * * Current development and maintenance by: * (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * @@ -67,16 +65,14 @@ struct us_unusual_dev { }; -/* Dynamic flag definitions: used in set_bit() etc. */ -#define US_FLIDX_URB_ACTIVE 18 /* 0x00040000 current_urb is in use */ -#define US_FLIDX_SG_ACTIVE 19 /* 0x00080000 current_sg is in use */ -#define US_FLIDX_ABORTING 20 /* 0x00100000 abort is in progress */ -#define US_FLIDX_DISCONNECTING 21 /* 0x00200000 disconnect in progress */ -#define ABORTING_OR_DISCONNECTING ((1UL << US_FLIDX_ABORTING) | \ - (1UL << US_FLIDX_DISCONNECTING)) -#define US_FLIDX_RESETTING 22 /* 0x00400000 device reset in progress */ -#define US_FLIDX_TIMED_OUT 23 /* 0x00800000 SCSI midlayer timed out */ - +/* Dynamic bitflag definitions (us->dflags): used in set_bit() etc. */ +#define US_FLIDX_URB_ACTIVE 0 /* current_urb is in use */ +#define US_FLIDX_SG_ACTIVE 1 /* current_sg is in use */ +#define US_FLIDX_ABORTING 2 /* abort is in progress */ +#define US_FLIDX_DISCONNECTING 3 /* disconnect in progress */ +#define US_FLIDX_RESETTING 4 /* device reset in progress */ +#define US_FLIDX_TIMED_OUT 5 /* SCSI midlayer timed out */ +#define US_FLIDX_DONT_SCAN 6 /* don't scan (disconnect) */ #define USB_STOR_STRING_LEN 32 @@ -109,7 +105,8 @@ struct us_data { struct usb_device *pusb_dev; /* this usb_device */ struct usb_interface *pusb_intf; /* this interface */ struct us_unusual_dev *unusual_dev; /* device-filter entry */ - unsigned long flags; /* from filter initially */ + unsigned long fflags; /* fixed flags from filter */ + unsigned long dflags; /* dynamic atomic bitflags */ unsigned int send_bulk_pipe; /* cached pipe values */ unsigned int recv_bulk_pipe; unsigned int send_ctrl_pipe; @@ -147,7 +144,7 @@ struct us_data { struct task_struct *ctl_thread; /* the control thread */ /* mutual exclusion and synchronization structures */ - struct semaphore sema; /* to sleep thread on */ + struct completion cmnd_ready; /* to sleep thread on */ struct completion notify; /* thread begin/end */ wait_queue_head_t delay_wait; /* wait during scan, reset */ struct completion scanning_done; /* wait for scan thread */ |