diff options
Diffstat (limited to 'drivers/usb/renesas_usbhs')
| -rw-r--r-- | drivers/usb/renesas_usbhs/mod_host.c | 302 |
1 files changed, 163 insertions, 139 deletions
diff --git a/drivers/usb/renesas_usbhs/mod_host.c b/drivers/usb/renesas_usbhs/mod_host.c index 164f28ee961..5b6ae2a8d30 100644 --- a/drivers/usb/renesas_usbhs/mod_host.c +++ b/drivers/usb/renesas_usbhs/mod_host.c @@ -84,6 +84,7 @@ struct usbhsh_device { struct usbhsh_ep { struct usbhs_pipe *pipe; struct usbhsh_device *udev; /* attached udev */ + struct usb_host_endpoint *ep; struct list_head ep_list; /* list to usbhsh_device */ int maxp; @@ -147,6 +148,8 @@ static const char usbhsh_hcd_name[] = "renesas_usbhs host"; #define usbhsh_ep_to_uep(u) ((u)->hcpriv) #define usbhsh_uep_to_pipe(u) ((u)->pipe) #define usbhsh_uep_to_udev(u) ((u)->udev) +#define usbhsh_uep_to_ep(u) ((u)->ep) + #define usbhsh_urb_to_ureq(u) ((u)->hcpriv) #define usbhsh_urb_to_usbv(u) ((u)->dev) @@ -205,6 +208,157 @@ static void usbhsh_ureq_free(struct usbhsh_hpriv *hpriv, } /* + * end-point control + */ +static struct usbhsh_device *usbhsh_device_get(struct usbhsh_hpriv *hpriv, + struct urb *urb); +static int usbhsh_endpoint_attach(struct usbhsh_hpriv *hpriv, + struct urb *urb, + gfp_t mem_flags) +{ + struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); + struct usbhsh_device *udev = usbhsh_device_get(hpriv, urb); + struct usb_host_endpoint *ep = urb->ep; + struct usbhsh_ep *uep; + struct usbhsh_pipe_info *info; + struct usbhs_pipe *best_pipe = NULL; + struct device *dev = usbhs_priv_to_dev(priv); + struct usb_endpoint_descriptor *desc = &ep->desc; + unsigned long flags; + + uep = kzalloc(sizeof(struct usbhsh_ep), mem_flags); + if (!uep) { + dev_err(dev, "usbhsh_ep alloc fail\n"); + return -ENOMEM; + } + + /******************** spin lock ********************/ + usbhs_lock(priv, flags); + + /* + * find best pipe for endpoint + * see + * HARDWARE LIMITATION + */ + if (usb_endpoint_xfer_control(desc)) { + /* best pipe is DCP */ + best_pipe = usbhsh_hpriv_to_dcp(hpriv); + } else { + struct usbhs_pipe *pipe; + unsigned int min_usr = ~0; + int dir_in_req = !!usb_pipein(urb->pipe); + int i, dir_in; + + usbhs_for_each_pipe(pipe, priv, i) { + if (!usbhs_pipe_type_is(pipe, usb_endpoint_type(desc))) + continue; + + dir_in = !!usbhs_pipe_is_dir_in(pipe); + if (0 != (dir_in - dir_in_req)) + continue; + + info = usbhsh_pipe_info(pipe); + if (min_usr > info->usr_cnt) { + min_usr = info->usr_cnt; + best_pipe = pipe; + } + } + } + + if (best_pipe) { + /* update pipe user count */ + info = usbhsh_pipe_info(best_pipe); + info->usr_cnt++; + + /* init this endpoint, and attach it to udev */ + INIT_LIST_HEAD(&uep->ep_list); + list_add_tail(&uep->ep_list, &udev->ep_list_head); + } + + usbhs_unlock(priv, flags); + /******************** spin unlock ******************/ + + if (unlikely(!best_pipe)) { + dev_err(dev, "couldn't find best pipe\n"); + kfree(uep); + return -EIO; + } + + /* + * init uep + */ + uep->pipe = best_pipe; + uep->maxp = usb_endpoint_maxp(desc); + usbhsh_uep_to_udev(uep) = udev; + usbhsh_uep_to_ep(uep) = ep; + usbhsh_ep_to_uep(ep) = uep; + + /* + * usbhs_pipe_config_update() should be called after + * usbhs_set_device_config() + * see + * DCPMAXP/PIPEMAXP + */ + usbhs_pipe_sequence_data0(uep->pipe); + usbhs_pipe_config_update(uep->pipe, + usbhsh_device_number(hpriv, udev), + usb_endpoint_num(desc), + uep->maxp); + + dev_dbg(dev, "%s [%d-%s](%p)\n", __func__, + usbhsh_device_number(hpriv, udev), + usbhs_pipe_name(uep->pipe), uep); + + return 0; +} + +static void usbhsh_endpoint_detach(struct usbhsh_hpriv *hpriv, + struct usb_host_endpoint *ep) +{ + struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); + struct device *dev = usbhs_priv_to_dev(priv); + struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep); + struct usbhsh_pipe_info *info; + unsigned long flags; + + if (!uep) + return; + + dev_dbg(dev, "%s [%d-%s](%p)\n", __func__, + usbhsh_device_number(hpriv, usbhsh_uep_to_udev(uep)), + usbhs_pipe_name(uep->pipe), uep); + + /******************** spin lock ********************/ + usbhs_lock(priv, flags); + + info = usbhsh_pipe_info(uep->pipe); + info->usr_cnt--; + + /* remove this endpoint from udev */ + list_del_init(&uep->ep_list); + + uep->pipe = NULL; + uep->maxp = 0; + usbhsh_uep_to_udev(uep) = NULL; + usbhsh_uep_to_ep(uep) = NULL; + usbhsh_ep_to_uep(ep) = NULL; + + usbhs_unlock(priv, flags); + /******************** spin unlock ******************/ + + kfree(uep); +} + +static void usbhsh_endpoint_detach_all(struct usbhsh_hpriv *hpriv, + struct usbhsh_device *udev) +{ + struct usbhsh_ep *uep, *next; + + list_for_each_entry_safe(uep, next, &udev->ep_list_head, ep_list) + usbhsh_endpoint_detach(hpriv, usbhsh_uep_to_ep(uep)); +} + +/* * device control */ static int usbhsh_connected_to_rhdev(struct usb_hcd *hcd, @@ -295,11 +449,15 @@ static struct usbhsh_device *usbhsh_device_attach(struct usbhsh_hpriv *hpriv, return NULL; } - if (usbhsh_device_has_endpoint(udev)) + if (usbhsh_device_has_endpoint(udev)) { dev_warn(dev, "udev have old endpoint\n"); + usbhsh_endpoint_detach_all(hpriv, udev); + } - if (usbhsh_device_has_endpoint(udev0)) + if (usbhsh_device_has_endpoint(udev0)) { dev_warn(dev, "udev0 have old endpoint\n"); + usbhsh_endpoint_detach_all(hpriv, udev0); + } /* uep will be attached */ INIT_LIST_HEAD(&udev0->ep_list_head); @@ -349,8 +507,10 @@ static void usbhsh_device_detach(struct usbhsh_hpriv *hpriv, dev_dbg(dev, "%s [%d](%p)\n", __func__, usbhsh_device_number(hpriv, udev), udev); - if (usbhsh_device_has_endpoint(udev)) + if (usbhsh_device_has_endpoint(udev)) { dev_warn(dev, "udev still have endpoint\n"); + usbhsh_endpoint_detach_all(hpriv, udev); + } /* * There is nothing to do if it is device0. @@ -377,142 +537,6 @@ static void usbhsh_device_detach(struct usbhsh_hpriv *hpriv, } /* - * end-point control - */ -static int usbhsh_endpoint_attach(struct usbhsh_hpriv *hpriv, - struct urb *urb, - gfp_t mem_flags) -{ - struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); - struct usbhsh_device *udev = usbhsh_device_get(hpriv, urb); - struct usb_host_endpoint *ep = urb->ep; - struct usbhsh_ep *uep; - struct usbhsh_pipe_info *info; - struct usbhs_pipe *best_pipe = NULL; - struct device *dev = usbhs_priv_to_dev(priv); - struct usb_endpoint_descriptor *desc = &ep->desc; - unsigned long flags; - - uep = kzalloc(sizeof(struct usbhsh_ep), mem_flags); - if (!uep) { - dev_err(dev, "usbhsh_ep alloc fail\n"); - return -ENOMEM; - } - - /******************** spin lock ********************/ - usbhs_lock(priv, flags); - - /* - * find best pipe for endpoint - * see - * HARDWARE LIMITATION - */ - if (usb_endpoint_xfer_control(desc)) { - /* best pipe is DCP */ - best_pipe = usbhsh_hpriv_to_dcp(hpriv); - } else { - struct usbhs_pipe *pipe; - unsigned int min_usr = ~0; - int dir_in_req = !!usb_pipein(urb->pipe); - int i, dir_in; - - usbhs_for_each_pipe(pipe, priv, i) { - if (!usbhs_pipe_type_is(pipe, usb_endpoint_type(desc))) - continue; - - dir_in = !!usbhs_pipe_is_dir_in(pipe); - if (0 != (dir_in - dir_in_req)) - continue; - - info = usbhsh_pipe_info(pipe); - if (min_usr > info->usr_cnt) { - min_usr = info->usr_cnt; - best_pipe = pipe; - } - } - } - - if (best_pipe) { - /* update pipe user count */ - info = usbhsh_pipe_info(best_pipe); - info->usr_cnt++; - - /* init this endpoint, and attach it to udev */ - INIT_LIST_HEAD(&uep->ep_list); - list_add_tail(&uep->ep_list, &udev->ep_list_head); - } - - usbhs_unlock(priv, flags); - /******************** spin unlock ******************/ - - if (unlikely(!best_pipe)) { - dev_err(dev, "couldn't find best pipe\n"); - kfree(uep); - return -EIO; - } - - /* - * init uep - */ - uep->pipe = best_pipe; - uep->maxp = usb_endpoint_maxp(desc); - usbhsh_uep_to_udev(uep) = udev; - usbhsh_ep_to_uep(ep) = uep; - - /* - * usbhs_pipe_config_update() should be called after - * usbhs_set_device_config() - * see - * DCPMAXP/PIPEMAXP - */ - usbhs_pipe_sequence_data0(uep->pipe); - usbhs_pipe_config_update(uep->pipe, - usbhsh_device_number(hpriv, udev), - usb_endpoint_num(desc), - uep->maxp); - - dev_dbg(dev, "%s [%d-%s](%p)\n", __func__, - usbhsh_device_number(hpriv, udev), - usbhs_pipe_name(uep->pipe), uep); - - return 0; -} - -static void usbhsh_endpoint_detach(struct usbhsh_hpriv *hpriv, - struct usb_host_endpoint *ep) -{ - struct usbhs_priv *priv = usbhsh_hpriv_to_priv(hpriv); - struct device *dev = usbhs_priv_to_dev(priv); - struct usbhsh_ep *uep = usbhsh_ep_to_uep(ep); - struct usbhsh_pipe_info *info; - unsigned long flags; - - if (!uep) - return; - - dev_dbg(dev, "%s [%d-%s](%p)\n", __func__, - usbhsh_device_number(hpriv, usbhsh_uep_to_udev(uep)), - usbhs_pipe_name(uep->pipe), uep); - - /******************** spin lock ********************/ - usbhs_lock(priv, flags); - - info = usbhsh_pipe_info(uep->pipe); - info->usr_cnt--; - - /* remove this endpoint from udev */ - list_del_init(&uep->ep_list); - - usbhsh_uep_to_udev(uep) = NULL; - usbhsh_ep_to_uep(ep) = NULL; - - usbhs_unlock(priv, flags); - /******************** spin unlock ******************/ - - kfree(uep); -} - -/* * queue push/pop */ static void usbhsh_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt) |