diff options
Diffstat (limited to 'drivers/usb/serial/option.c')
| -rw-r--r-- | drivers/usb/serial/option.c | 228 |
1 files changed, 112 insertions, 116 deletions
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index b722175f108..e9256408757 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -12,14 +12,25 @@ History: 2005-05-19 v0.1 Initial version, based on incomplete docs - and analysis of misbehavior of the standard driver + and analysis of misbehavior with the standard driver 2005-05-20 v0.2 Extended the input buffer to avoid losing random 64-byte chunks of data 2005-05-21 v0.3 implemented chars_in_buffer() turned on low_latency simplified the code somewhat + 2005-05-24 v0.4 option_write() sometimes deadlocked under heavy load + removed some dead code + added sponsor notice + coding style clean-up + 2005-06-20 v0.4.1 add missing braces :-/ + killed end-of-line whitespace + 2005-07-15 v0.4.2 rename WLAN product to FUSION, add FUSION2 + + Work sponsored by: Sigos GmbH, Germany <info@sigos.de> + */ -#define DRIVER_VERSION "v0.3" + +#define DRIVER_VERSION "v0.4" #define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>" #define DRIVER_DESC "Option Card (PC-Card to) USB to Serial Driver" @@ -44,7 +55,6 @@ static int option_write_room (struct usb_serial_port *port); static void option_instat_callback(struct urb *urb, struct pt_regs *regs); - static int option_write (struct usb_serial_port *port, const unsigned char *buf, int count); @@ -60,14 +70,17 @@ static int option_tiocmset (struct usb_serial_port *port, struct file *file, static int option_send_setup (struct usb_serial_port *port); /* Vendor and product IDs */ -#define OPTION_VENDOR_ID 0x0AF0 +#define OPTION_VENDOR_ID 0x0AF0 + +#define OPTION_PRODUCT_OLD 0x5000 +#define OPTION_PRODUCT_FUSION 0x6000 +#define OPTION_PRODUCT_FUSION2 0x6300 -#define OPTION_PRODUCT_OLD 0x5000 -#define OPTION_PRODUCT_WLAN 0x6000 static struct usb_device_id option_ids[] = { { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) }, - { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_WLAN) }, + { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION) }, + { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION2) }, { } /* Terminating entry */ }; @@ -85,58 +98,62 @@ static struct usb_driver option_driver = { * recognizes separately, thus num_port=1. */ static struct usb_serial_device_type option_3port_device = { - .owner = THIS_MODULE, - .name = "Option 3-port card", - .short_name = "option", - .id_table = option_ids, - .num_interrupt_in = NUM_DONT_CARE, - .num_bulk_in = NUM_DONT_CARE, - .num_bulk_out = NUM_DONT_CARE, - .num_ports = 1, /* 3 */ - .open = option_open, - .close = option_close, - .write = option_write, - .write_room = option_write_room, - .chars_in_buffer = option_chars_in_buffer, - .throttle = option_rx_throttle, - .unthrottle = option_rx_unthrottle, - .ioctl = option_ioctl, - .set_termios = option_set_termios, - .break_ctl = option_break_ctl, - .tiocmget = option_tiocmget, - .tiocmset = option_tiocmset, - .attach = option_startup, - .shutdown = option_shutdown, - .read_int_callback = option_instat_callback, + .owner = THIS_MODULE, + .name = "Option 3G data card", + .short_name = "option", + .id_table = option_ids, + .num_interrupt_in = NUM_DONT_CARE, + .num_bulk_in = NUM_DONT_CARE, + .num_bulk_out = NUM_DONT_CARE, + .num_ports = 1, /* 3, but the card reports its ports separately */ + .open = option_open, + .close = option_close, + .write = option_write, + .write_room = option_write_room, + .chars_in_buffer = option_chars_in_buffer, + .throttle = option_rx_throttle, + .unthrottle = option_rx_unthrottle, + .ioctl = option_ioctl, + .set_termios = option_set_termios, + .break_ctl = option_break_ctl, + .tiocmget = option_tiocmget, + .tiocmset = option_tiocmset, + .attach = option_startup, + .shutdown = option_shutdown, + .read_int_callback = option_instat_callback, }; +#ifdef CONFIG_USB_DEBUG static int debug; +#else +#define debug 0 +#endif + /* per port private data */ -#define N_IN_URB 4 -#define N_OUT_URB 1 -#define IN_BUFLEN 1024 -#define OUT_BUFLEN 1024 +#define N_IN_URB 4 +#define N_OUT_URB 1 +#define IN_BUFLEN 1024 +#define OUT_BUFLEN 128 struct option_port_private { /* Input endpoints and buffer for this port */ - struct urb *in_urbs[N_IN_URB]; - char in_buffer[N_IN_URB][IN_BUFLEN]; + struct urb *in_urbs[N_IN_URB]; + char in_buffer[N_IN_URB][IN_BUFLEN]; /* Output endpoints and buffer for this port */ - struct urb *out_urbs[N_OUT_URB]; - char out_buffer[N_OUT_URB][OUT_BUFLEN]; + struct urb *out_urbs[N_OUT_URB]; + char out_buffer[N_OUT_URB][OUT_BUFLEN]; /* 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; - // int break_on; - - unsigned long tx_start_time[N_OUT_URB]; + int rts_state; /* Handshaking pins (outputs) */ + int dtr_state; + int cts_state; /* Handshaking pins (inputs) */ + int dsr_state; + int dcd_state; + int ri_state; + + unsigned long tx_start_time[N_OUT_URB]; }; @@ -190,13 +207,13 @@ static void option_break_ctl (struct usb_serial_port *port, int break_state) { /* Unfortunately, I don't know how to send a break */ - dbg("%s", __FUNCTION__); + dbg("%s", __FUNCTION__); } static void option_set_termios (struct usb_serial_port *port, - struct termios *old_termios) + struct termios *old_termios) { dbg("%s", __FUNCTION__); @@ -204,10 +221,10 @@ option_set_termios (struct usb_serial_port *port, } static int -option_tiocmget(struct usb_serial_port *port, struct file *file) +option_tiocmget (struct usb_serial_port *port, struct file *file) { - unsigned int value; - struct option_port_private *portdata; + unsigned int value; + struct option_port_private *portdata; portdata = usb_get_serial_port_data(port); @@ -225,7 +242,7 @@ static int option_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear) { - struct option_port_private *portdata; + struct option_port_private *portdata; portdata = usb_get_serial_port_data(port); @@ -250,71 +267,50 @@ option_ioctl (struct usb_serial_port *port, struct file *file, /* Write */ static int -option_write(struct usb_serial_port *port, - const unsigned char *buf, int count) +option_write (struct usb_serial_port *port, + const unsigned char *buf, int count) { - struct option_port_private *portdata; - int i; - int left, todo; - struct urb *this_urb = NULL; /* spurious */ - int err; + struct option_port_private *portdata; + int i; + int left, todo; + struct urb *this_urb = NULL; /* spurious */ + int err; portdata = usb_get_serial_port_data(port); dbg("%s: write (%d chars)", __FUNCTION__, count); -#if 0 - spin_lock(&port->lock); - if (port->write_urb_busy) { - spin_unlock(&port->lock); - dbg("%s: already writing", __FUNCTION__); - return 0; - } - port->write_urb_busy = 1; - spin_unlock(&port->lock); -#endif - i = 0; left = count; - while (left>0) { + for (i=0; left > 0 && i < N_OUT_URB; i++) { todo = left; if (todo > OUT_BUFLEN) todo = OUT_BUFLEN; - for (;i < N_OUT_URB; i++) { - /* Check we have a valid urb/endpoint before we use it... */ - this_urb = portdata->out_urbs[i]; - if (this_urb->status != -EINPROGRESS) - break; + this_urb = portdata->out_urbs[i]; + if (this_urb->status == -EINPROGRESS) { if (this_urb->transfer_flags & URB_ASYNC_UNLINK) continue; if (time_before(jiffies, portdata->tx_start_time[i] + 10 * HZ)) continue; this_urb->transfer_flags |= URB_ASYNC_UNLINK; usb_unlink_urb(this_urb); + continue; } - - if (i == N_OUT_URB) { - /* no bulk out free! */ - dbg("%s: no output urb -- left %d", __FUNCTION__,count-left); -#if 0 - port->write_urb_busy = 0; -#endif - return count-left; - } + if (this_urb->status != 0) + dbg("usb_write %p failed (err=%d)", this_urb, this_urb->status); dbg("%s: endpoint %d buf %d", __FUNCTION__, usb_pipeendpoint(this_urb->pipe), i); + /* send the data */ memcpy (this_urb->transfer_buffer, buf, todo); - - /* send the data out the bulk port */ this_urb->transfer_buffer_length = todo; this_urb->transfer_flags &= ~URB_ASYNC_UNLINK; this_urb->dev = port->serial->dev; err = usb_submit_urb(this_urb, GFP_ATOMIC); if (err) { - dbg("usb_submit_urb %p (write bulk) failed (%d,, has %d)", this_urb, err, this_urb->status); + dbg("usb_submit_urb %p (write bulk) failed (%d, has %d)", this_urb, err, this_urb->status); continue; } portdata->tx_start_time[i] = jiffies; @@ -323,9 +319,6 @@ option_write(struct usb_serial_port *port, } count -= left; -#if 0 - port->write_urb_busy = 0; -#endif dbg("%s: wrote (did %d)", __FUNCTION__, count); return count; } @@ -333,7 +326,7 @@ option_write(struct usb_serial_port *port, static void option_indat_callback (struct urb *urb, struct pt_regs *regs) { - int i, err; + int i, err; int endpoint; struct usb_serial_port *port; struct tty_struct *tty; @@ -444,10 +437,11 @@ option_write_room (struct usb_serial_port *port) portdata = usb_get_serial_port_data(port); - for (i=0; i < N_OUT_URB; i++) + for (i=0; i < N_OUT_URB; i++) { this_urb = portdata->out_urbs[i]; if (this_urb && this_urb->status != -EINPROGRESS) data_len += OUT_BUFLEN; + } dbg("%s: %d", __FUNCTION__, data_len); return data_len; @@ -464,11 +458,11 @@ option_chars_in_buffer (struct usb_serial_port *port) portdata = usb_get_serial_port_data(port); - for (i=0; i < N_OUT_URB; i++) + for (i=0; i < N_OUT_URB; i++) { this_urb = portdata->out_urbs[i]; if (this_urb && this_urb->status == -EINPROGRESS) data_len += this_urb->transfer_buffer_length; - + } dbg("%s: %d", __FUNCTION__, data_len); return data_len; } @@ -477,10 +471,10 @@ option_chars_in_buffer (struct usb_serial_port *port) static int option_open (struct usb_serial_port *port, struct file *filp) { - struct option_port_private *portdata; - struct usb_serial *serial = port->serial; - int i, err; - struct urb *urb; + struct option_port_private *portdata; + struct usb_serial *serial = port->serial; + int i, err; + struct urb *urb; portdata = usb_get_serial_port_data(port); @@ -528,7 +522,7 @@ option_open (struct usb_serial_port *port, struct file *filp) } static inline void -stop_urb(struct urb *urb) +stop_urb (struct urb *urb) { if (urb && urb->status == -EINPROGRESS) { urb->transfer_flags &= ~URB_ASYNC_UNLINK; @@ -537,11 +531,11 @@ stop_urb(struct urb *urb) } static void -option_close(struct usb_serial_port *port, struct file *filp) +option_close (struct usb_serial_port *port, struct file *filp) { - int i; - struct usb_serial *serial = port->serial; - struct option_port_private *portdata; + int i; + struct usb_serial *serial = port->serial; + struct option_port_private *portdata; dbg("%s", __FUNCTION__); portdata = usb_get_serial_port_data(port); @@ -589,11 +583,11 @@ option_setup_urb (struct usb_serial *serial, int endpoint, /* Setup urbs */ static void -option_setup_urbs(struct usb_serial *serial) +option_setup_urbs (struct usb_serial *serial) { - int j; - struct usb_serial_port *port; - struct option_port_private *portdata; + int j; + struct usb_serial_port *port; + struct option_port_private *portdata; dbg("%s", __FUNCTION__); @@ -617,7 +611,7 @@ option_setup_urbs(struct usb_serial *serial) static int -option_send_setup(struct usb_serial_port *port) +option_send_setup (struct usb_serial_port *port) { struct usb_serial *serial = port->serial; struct option_port_private *portdata; @@ -644,9 +638,9 @@ option_send_setup(struct usb_serial_port *port) static int option_startup (struct usb_serial *serial) { - int i, err; - struct usb_serial_port *port; - struct option_port_private *portdata; + int i, err; + struct usb_serial_port *port; + struct option_port_private *portdata; dbg("%s", __FUNCTION__); @@ -677,9 +671,9 @@ option_startup (struct usb_serial *serial) static void option_shutdown (struct usb_serial *serial) { - int i, j; - struct usb_serial_port *port; - struct option_port_private *portdata; + int i, j; + struct usb_serial_port *port; + struct option_port_private *portdata; dbg("%s", __FUNCTION__); @@ -724,6 +718,8 @@ MODULE_DESCRIPTION(DRIVER_DESC); MODULE_VERSION(DRIVER_VERSION); MODULE_LICENSE("GPL"); +#ifdef CONFIG_USB_DEBUG module_param(debug, bool, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(debug, "Debug messages"); +#endif |