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Kevin Lloyd69de51f2006-06-30 11:17:55 -07001/*
Kevin Lloyd033a3fb2006-10-13 23:53:21 -07002 USB Driver for Sierra Wireless
3
Kevin Lloyd112225b2007-07-16 13:49:27 -07004 Copyright (C) 2006, 2007 Kevin Lloyd <linux@sierrawireless.com>
Kevin Lloyd033a3fb2006-10-13 23:53:21 -07005
6 IMPORTANT DISCLAIMER: This driver is not commercially supported by
7 Sierra Wireless. Use at your own risk.
8
9 This driver is free software; you can redistribute it and/or modify
10 it under the terms of Version 2 of the GNU General Public License as
11 published by the Free Software Foundation.
12
13 Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
14 Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
Kevin Lloyd033a3fb2006-10-13 23:53:21 -070015*/
16
Kevin Lloyd9454c462007-07-16 13:49:29 -070017#define DRIVER_VERSION "v.1.2.5b"
Kevin Lloyd033a3fb2006-10-13 23:53:21 -070018#define DRIVER_AUTHOR "Kevin Lloyd <linux@sierrawireless.com>"
19#define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
Kevin Lloyd69de51f2006-06-30 11:17:55 -070020
21#include <linux/kernel.h>
Kevin Lloyd033a3fb2006-10-13 23:53:21 -070022#include <linux/jiffies.h>
23#include <linux/errno.h>
Kevin Lloyd69de51f2006-06-30 11:17:55 -070024#include <linux/tty.h>
Kevin Lloyd033a3fb2006-10-13 23:53:21 -070025#include <linux/tty_flip.h>
Kevin Lloyd69de51f2006-06-30 11:17:55 -070026#include <linux/module.h>
27#include <linux/usb.h>
Greg Kroah-Hartmana9698882006-07-11 21:22:58 -070028#include <linux/usb/serial.h>
Kevin Lloyd69de51f2006-06-30 11:17:55 -070029
Kevin Lloyd112225b2007-07-16 13:49:27 -070030#define SWIMS_USB_REQUEST_SetMode 0x0B
31#define SWIMS_USB_REQUEST_TYPE_SetMode 0x40
32#define SWIMS_USB_INDEX_SetMode 0x0000
33#define SWIMS_SET_MODE_Modem 0x0001
34
35/* per port private data */
36#define N_IN_URB 4
37#define N_OUT_URB 4
38#define IN_BUFLEN 4096
39
40static int debug;
41
42enum devicetype {
43 DEVICE_3_PORT = 0,
44 DEVICE_1_PORT = 1,
45 DEVICE_INSTALLER = 2,
46};
47
Adrian Bunk82a24e62007-07-29 16:59:02 +020048static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
Kevin Lloyd112225b2007-07-16 13:49:27 -070049{
50 int result;
Joe Perches898eb712007-10-18 03:06:30 -070051 dev_dbg(&udev->dev, "%s", "SET POWER STATE\n");
Kevin Lloyd112225b2007-07-16 13:49:27 -070052 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
53 0x00, /* __u8 request */
54 0x40, /* __u8 request type */
55 swiState, /* __u16 value */
56 0, /* __u16 index */
57 NULL, /* void *data */
58 0, /* __u16 size */
59 USB_CTRL_SET_TIMEOUT); /* int timeout */
60 return result;
61}
62
Adrian Bunk82a24e62007-07-29 16:59:02 +020063static int sierra_set_ms_mode(struct usb_device *udev, __u16 eSocMode)
Kevin Lloyd112225b2007-07-16 13:49:27 -070064{
65 int result;
Joe Perches898eb712007-10-18 03:06:30 -070066 dev_dbg(&udev->dev, "%s", "DEVICE MODE SWITCH\n");
Kevin Lloyd112225b2007-07-16 13:49:27 -070067 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
68 SWIMS_USB_REQUEST_SetMode, /* __u8 request */
69 SWIMS_USB_REQUEST_TYPE_SetMode, /* __u8 request type */
70 eSocMode, /* __u16 value */
71 SWIMS_USB_INDEX_SetMode, /* __u16 index */
72 NULL, /* void *data */
73 0, /* __u16 size */
74 USB_CTRL_SET_TIMEOUT); /* int timeout */
75 return result;
76}
77
Adrian Bunk82a24e62007-07-29 16:59:02 +020078static int sierra_probe(struct usb_interface *iface,
79 const struct usb_device_id *id)
Kevin Lloyd112225b2007-07-16 13:49:27 -070080{
81 int result;
82 struct usb_device *udev;
83
84 udev = usb_get_dev(interface_to_usbdev(iface));
85
86 /* Check if in installer mode */
87 if (id->driver_info == DEVICE_INSTALLER) {
88 dev_dbg(&udev->dev, "%s", "FOUND DEVICE(SW)\n");
89 result = sierra_set_ms_mode(udev, SWIMS_SET_MODE_Modem);
90 /*We do not want to bind to the device when in installer mode*/
91 return -EIO;
92 }
93
94 return usb_serial_probe(iface, id);
95}
Kevin Lloyd033a3fb2006-10-13 23:53:21 -070096
Kevin Lloyd69de51f2006-06-30 11:17:55 -070097static struct usb_device_id id_table [] = {
Kevin Lloyd69de51f2006-06-30 11:17:55 -070098 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
Kevin Lloyde43062d2007-01-17 16:04:18 -080099 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
Greg Kroah-Hartman90ac3c82002-04-09 12:14:34 -0700100 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700101 { USB_DEVICE(0x0f30, 0x1b1d) }, /* Sierra Wireless MC5720 */
Kevin Lloyde43062d2007-01-17 16:04:18 -0800102 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
agilmore@wirelessbeehive.comb9e13ac2007-12-04 11:37:12 -0700103 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
Kevin Lloyde43062d2007-01-17 16:04:18 -0800104 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
105 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700106 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
107
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700108 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
Kevin Lloyde43062d2007-01-17 16:04:18 -0800109 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700110 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700111 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
Kevin R Pageed0ccdb2007-12-13 01:10:48 +0000112 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Thinkpad internal) */
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700113 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700114 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
115 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
116 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
117 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
118 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
119 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700120
Kevin Lloyd112225b2007-07-16 13:49:27 -0700121 { USB_DEVICE(0x1199, 0x0112), .driver_info = DEVICE_1_PORT }, /* Sierra Wireless AirCard 580 */
122 { USB_DEVICE(0x0F3D, 0x0112), .driver_info = DEVICE_1_PORT }, /* Airprime/Sierra PC 5220 */
123
124 { USB_DEVICE(0x1199, 0x0FFF), .driver_info = DEVICE_INSTALLER},
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700125 { }
126};
Greg Kroah-Hartman964ee1de2006-10-17 10:17:58 -0700127MODULE_DEVICE_TABLE(usb, id_table);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700128
129static struct usb_device_id id_table_1port [] = {
130 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
131 { USB_DEVICE(0x0F3D, 0x0112) }, /* AirPrime/Sierra PC 5220 */
132 { }
133};
134
135static struct usb_device_id id_table_3port [] = {
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700136 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
Kevin Lloyde43062d2007-01-17 16:04:18 -0800137 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700138 { USB_DEVICE(0x0f30, 0x1b1d) }, /* Sierra Wireless MC5720 */
Greg Kroah-Hartman90ac3c82002-04-09 12:14:34 -0700139 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
Kevin Lloyde43062d2007-01-17 16:04:18 -0800140 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
agilmore@wirelessbeehive.com5fdcd032007-11-20 13:39:03 -0700141 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
Kevin Lloyde43062d2007-01-17 16:04:18 -0800142 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
143 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700144 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U*/
Kevin Lloyd112225b2007-07-16 13:49:27 -0700145
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700146 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
Kevin Lloyde43062d2007-01-17 16:04:18 -0800147 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700148 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700149 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
Kevin R Pageed0ccdb2007-12-13 01:10:48 +0000150 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Thinkpad internal) */
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700151 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
Kevin Lloyd9454c462007-07-16 13:49:29 -0700152 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780*/
153 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781*/
154 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
155 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
156 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880E */
157 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881E */
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700158 { }
159};
160
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700161static struct usb_driver sierra_driver = {
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700162 .name = "sierra",
Kevin Lloyd112225b2007-07-16 13:49:27 -0700163 .probe = sierra_probe,
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700164 .disconnect = usb_serial_disconnect,
165 .id_table = id_table,
Greg Kroah-Hartman964ee1de2006-10-17 10:17:58 -0700166 .no_dynamic_id = 1,
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700167};
168
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700169
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700170struct sierra_port_private {
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900171 spinlock_t lock; /* lock the structure */
172 int outstanding_urbs; /* number of out urbs in flight */
173
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700174 /* Input endpoints and buffer for this port */
175 struct urb *in_urbs[N_IN_URB];
176 char in_buffer[N_IN_URB][IN_BUFLEN];
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700177
178 /* Settings for the port */
179 int rts_state; /* Handshaking pins (outputs) */
180 int dtr_state;
181 int cts_state; /* Handshaking pins (inputs) */
182 int dsr_state;
183 int dcd_state;
184 int ri_state;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700185};
186
Greg Kroah-Hartman964ee1de2006-10-17 10:17:58 -0700187static int sierra_send_setup(struct usb_serial_port *port)
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700188{
Greg Kroah-Hartman964ee1de2006-10-17 10:17:58 -0700189 struct usb_serial *serial = port->serial;
190 struct sierra_port_private *portdata;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700191
Greg Kroah-Hartman964ee1de2006-10-17 10:17:58 -0700192 dbg("%s", __FUNCTION__);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700193
Greg Kroah-Hartman964ee1de2006-10-17 10:17:58 -0700194 portdata = usb_get_serial_port_data(port);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700195
Greg Kroah-Hartman964ee1de2006-10-17 10:17:58 -0700196 if (port->tty) {
197 int val = 0;
198 if (portdata->dtr_state)
199 val |= 0x01;
200 if (portdata->rts_state)
201 val |= 0x02;
202
203 return usb_control_msg(serial->dev,
204 usb_rcvctrlpipe(serial->dev, 0),
205 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
206 }
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700207
208 return 0;
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700209}
210
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700211static void sierra_rx_throttle(struct usb_serial_port *port)
212{
213 dbg("%s", __FUNCTION__);
214}
215
216static void sierra_rx_unthrottle(struct usb_serial_port *port)
217{
218 dbg("%s", __FUNCTION__);
219}
220
221static void sierra_break_ctl(struct usb_serial_port *port, int break_state)
222{
223 /* Unfortunately, I don't know how to send a break */
224 dbg("%s", __FUNCTION__);
225}
226
227static void sierra_set_termios(struct usb_serial_port *port,
Alan Cox606d0992006-12-08 02:38:45 -0800228 struct ktermios *old_termios)
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700229{
230 dbg("%s", __FUNCTION__);
Alan Coxed1f12e2007-10-18 01:24:22 -0700231 tty_termios_copy_hw(port->tty->termios, old_termios);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700232 sierra_send_setup(port);
233}
234
235static int sierra_tiocmget(struct usb_serial_port *port, struct file *file)
236{
237 unsigned int value;
238 struct sierra_port_private *portdata;
239
240 portdata = usb_get_serial_port_data(port);
241
242 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
243 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
244 ((portdata->cts_state) ? TIOCM_CTS : 0) |
245 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
246 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
247 ((portdata->ri_state) ? TIOCM_RNG : 0);
248
249 return value;
250}
251
252static int sierra_tiocmset(struct usb_serial_port *port, struct file *file,
253 unsigned int set, unsigned int clear)
254{
255 struct sierra_port_private *portdata;
256
257 portdata = usb_get_serial_port_data(port);
258
259 if (set & TIOCM_RTS)
260 portdata->rts_state = 1;
261 if (set & TIOCM_DTR)
262 portdata->dtr_state = 1;
263
264 if (clear & TIOCM_RTS)
265 portdata->rts_state = 0;
266 if (clear & TIOCM_DTR)
267 portdata->dtr_state = 0;
268 return sierra_send_setup(port);
269}
270
271static int sierra_ioctl(struct usb_serial_port *port, struct file *file,
272 unsigned int cmd, unsigned long arg)
273{
274 return -ENOIOCTLCMD;
275}
276
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900277static void sierra_outdat_callback(struct urb *urb)
278{
279 struct usb_serial_port *port = urb->context;
280 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
281 int status = urb->status;
282 unsigned long flags;
283
284 dbg("%s - port %d", __FUNCTION__, port->number);
285
286 /* free up the transfer buffer, as usb_free_urb() does not do this */
287 kfree(urb->transfer_buffer);
288
289 if (status)
290 dbg("%s - nonzero write bulk status received: %d",
291 __FUNCTION__, status);
292
293 spin_lock_irqsave(&portdata->lock, flags);
294 --portdata->outstanding_urbs;
295 spin_unlock_irqrestore(&portdata->lock, flags);
296
297 usb_serial_port_softint(port);
298}
299
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700300/* Write */
301static int sierra_write(struct usb_serial_port *port,
302 const unsigned char *buf, int count)
303{
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900304 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
305 struct usb_serial *serial = port->serial;
306 unsigned long flags;
307 unsigned char *buffer;
308 struct urb *urb;
309 int status;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700310
311 portdata = usb_get_serial_port_data(port);
312
313 dbg("%s: write (%d chars)", __FUNCTION__, count);
314
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900315 spin_lock_irqsave(&portdata->lock, flags);
316 if (portdata->outstanding_urbs > N_OUT_URB) {
317 spin_unlock_irqrestore(&portdata->lock, flags);
318 dbg("%s - write limit hit\n", __FUNCTION__);
319 return 0;
320 }
321 portdata->outstanding_urbs++;
322 spin_unlock_irqrestore(&portdata->lock, flags);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700323
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900324 buffer = kmalloc(count, GFP_ATOMIC);
325 if (!buffer) {
326 dev_err(&port->dev, "out of memory\n");
327 count = -ENOMEM;
328 goto error_no_buffer;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700329 }
330
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900331 urb = usb_alloc_urb(0, GFP_ATOMIC);
332 if (!urb) {
333 dev_err(&port->dev, "no more free urbs\n");
334 count = -ENOMEM;
335 goto error_no_urb;
336 }
337
338 memcpy(buffer, buf, count);
339
340 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
341
342 usb_fill_bulk_urb(urb, serial->dev,
343 usb_sndbulkpipe(serial->dev,
344 port->bulk_out_endpointAddress),
345 buffer, count, sierra_outdat_callback, port);
346
347 /* send it down the pipe */
348 status = usb_submit_urb(urb, GFP_ATOMIC);
349 if (status) {
350 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
351 "with status = %d\n", __FUNCTION__, status);
352 count = status;
353 goto error;
354 }
355
356 /* we are done with this urb, so let the host driver
357 * really free it when it is finished with it */
358 usb_free_urb(urb);
359
360 return count;
361error:
362 usb_free_urb(urb);
363error_no_urb:
364 kfree(buffer);
365error_no_buffer:
366 spin_lock_irqsave(&portdata->lock, flags);
367 --portdata->outstanding_urbs;
368 spin_unlock_irqrestore(&portdata->lock, flags);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700369 return count;
370}
371
372static void sierra_indat_callback(struct urb *urb)
373{
374 int err;
375 int endpoint;
376 struct usb_serial_port *port;
377 struct tty_struct *tty;
378 unsigned char *data = urb->transfer_buffer;
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700379 int status = urb->status;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700380
381 dbg("%s: %p", __FUNCTION__, urb);
382
383 endpoint = usb_pipeendpoint(urb->pipe);
384 port = (struct usb_serial_port *) urb->context;
385
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700386 if (status) {
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700387 dbg("%s: nonzero status: %d on endpoint %02x.",
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700388 __FUNCTION__, status, endpoint);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700389 } else {
390 tty = port->tty;
391 if (urb->actual_length) {
392 tty_buffer_request_room(tty, urb->actual_length);
393 tty_insert_flip_string(tty, data, urb->actual_length);
394 tty_flip_buffer_push(tty);
395 } else {
396 dbg("%s: empty read urb received", __FUNCTION__);
397 }
398
399 /* Resubmit urb so we continue receiving */
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700400 if (port->open_count && status != -ESHUTDOWN) {
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700401 err = usb_submit_urb(urb, GFP_ATOMIC);
402 if (err)
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900403 dev_err(&port->dev, "resubmit read urb failed."
Joe Perches898eb712007-10-18 03:06:30 -0700404 "(%d)\n", err);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700405 }
406 }
407 return;
408}
409
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700410static void sierra_instat_callback(struct urb *urb)
411{
412 int err;
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700413 int status = urb->status;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700414 struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
415 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
416 struct usb_serial *serial = port->serial;
417
418 dbg("%s", __FUNCTION__);
419 dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata);
420
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700421 if (status == 0) {
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700422 struct usb_ctrlrequest *req_pkt =
423 (struct usb_ctrlrequest *)urb->transfer_buffer;
424
425 if (!req_pkt) {
426 dbg("%s: NULL req_pkt\n", __FUNCTION__);
427 return;
428 }
429 if ((req_pkt->bRequestType == 0xA1) &&
430 (req_pkt->bRequest == 0x20)) {
431 int old_dcd_state;
432 unsigned char signals = *((unsigned char *)
433 urb->transfer_buffer +
434 sizeof(struct usb_ctrlrequest));
435
436 dbg("%s: signal x%x", __FUNCTION__, signals);
437
438 old_dcd_state = portdata->dcd_state;
439 portdata->cts_state = 1;
440 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
441 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
442 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
443
444 if (port->tty && !C_CLOCAL(port->tty) &&
445 old_dcd_state && !portdata->dcd_state)
446 tty_hangup(port->tty);
447 } else {
448 dbg("%s: type %x req %x", __FUNCTION__,
449 req_pkt->bRequestType,req_pkt->bRequest);
450 }
451 } else
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700452 dbg("%s: error %d", __FUNCTION__, status);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700453
454 /* Resubmit urb so we continue receiving IRQ data */
Greg Kroah-Hartman17dd2212007-06-15 15:44:13 -0700455 if (status != -ESHUTDOWN) {
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700456 urb->dev = serial->dev;
457 err = usb_submit_urb(urb, GFP_ATOMIC);
458 if (err)
459 dbg("%s: resubmit intr urb failed. (%d)",
460 __FUNCTION__, err);
461 }
462}
463
464static int sierra_write_room(struct usb_serial_port *port)
465{
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900466 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
467 unsigned long flags;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700468
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900469 dbg("%s - port %d", __FUNCTION__, port->number);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700470
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900471 /* try to give a good number back based on if we have any free urbs at
472 * this point in time */
473 spin_lock_irqsave(&portdata->lock, flags);
474 if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
475 spin_unlock_irqrestore(&portdata->lock, flags);
476 dbg("%s - write limit hit\n", __FUNCTION__);
477 return 0;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700478 }
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900479 spin_unlock_irqrestore(&portdata->lock, flags);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700480
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900481 return 2048;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700482}
483
484static int sierra_chars_in_buffer(struct usb_serial_port *port)
485{
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900486 dbg("%s - port %d", __FUNCTION__, port->number);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700487
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900488 /*
489 * We can't really account for how much data we
490 * have sent out, but hasn't made it through to the
491 * device as we can't see the backend here, so just
492 * tell the tty layer that everything is flushed.
493 */
494 return 0;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700495}
496
497static int sierra_open(struct usb_serial_port *port, struct file *filp)
498{
499 struct sierra_port_private *portdata;
500 struct usb_serial *serial = port->serial;
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900501 int i;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700502 struct urb *urb;
Kevin Lloyde43062d2007-01-17 16:04:18 -0800503 int result;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700504
505 portdata = usb_get_serial_port_data(port);
506
507 dbg("%s", __FUNCTION__);
508
509 /* Set some sane defaults */
510 portdata->rts_state = 1;
511 portdata->dtr_state = 1;
512
513 /* Reset low level data toggle and start reading from endpoints */
514 for (i = 0; i < N_IN_URB; i++) {
515 urb = portdata->in_urbs[i];
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900516 if (!urb)
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700517 continue;
518 if (urb->dev != serial->dev) {
519 dbg("%s: dev %p != %p", __FUNCTION__,
520 urb->dev, serial->dev);
521 continue;
522 }
523
524 /*
525 * make sure endpoint data toggle is synchronized with the
526 * device
527 */
528 usb_clear_halt(urb->dev, urb->pipe);
529
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900530 result = usb_submit_urb(urb, GFP_KERNEL);
531 if (result) {
Joe Perches898eb712007-10-18 03:06:30 -0700532 dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900533 i, result, urb->transfer_buffer_length);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700534 }
535 }
536
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700537 port->tty->low_latency = 1;
538
539 sierra_send_setup(port);
540
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900541 /* start up the interrupt endpoint if we have one */
542 if (port->interrupt_in_urb) {
543 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
544 if (result)
Joe Perches898eb712007-10-18 03:06:30 -0700545 dev_err(&port->dev, "submit irq_in urb failed %d\n",
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900546 result);
547 }
548 return 0;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700549}
550
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700551static void sierra_close(struct usb_serial_port *port, struct file *filp)
552{
553 int i;
554 struct usb_serial *serial = port->serial;
555 struct sierra_port_private *portdata;
556
557 dbg("%s", __FUNCTION__);
558 portdata = usb_get_serial_port_data(port);
559
560 portdata->rts_state = 0;
561 portdata->dtr_state = 0;
562
563 if (serial->dev) {
564 sierra_send_setup(port);
565
566 /* Stop reading/writing urbs */
567 for (i = 0; i < N_IN_URB; i++)
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900568 usb_kill_urb(portdata->in_urbs[i]);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700569 }
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900570
571 usb_kill_urb(port->interrupt_in_urb);
572
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700573 port->tty = NULL;
574}
575
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700576static int sierra_startup(struct usb_serial *serial)
577{
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700578 struct usb_serial_port *port;
579 struct sierra_port_private *portdata;
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900580 struct urb *urb;
581 int i;
582 int j;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700583
584 dbg("%s", __FUNCTION__);
585
Kevin Lloyd112225b2007-07-16 13:49:27 -0700586 /*Set Device mode to D0 */
587 sierra_set_power_state(serial->dev, 0x0000);
588
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700589 /* Now setup per port private data */
590 for (i = 0; i < serial->num_ports; i++) {
591 port = serial->port[i];
592 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
593 if (!portdata) {
594 dbg("%s: kmalloc for sierra_port_private (%d) failed!.",
595 __FUNCTION__, i);
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900596 return -ENOMEM;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700597 }
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900598 spin_lock_init(&portdata->lock);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700599
600 usb_set_serial_port_data(port, portdata);
601
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900602 /* initialize the in urbs */
603 for (j = 0; j < N_IN_URB; ++j) {
604 urb = usb_alloc_urb(0, GFP_KERNEL);
605 if (urb == NULL) {
606 dbg("%s: alloc for in port failed.",
607 __FUNCTION__);
608 continue;
609 }
610 /* Fill URB using supplied data. */
611 usb_fill_bulk_urb(urb, serial->dev,
612 usb_rcvbulkpipe(serial->dev,
613 port->bulk_in_endpointAddress),
614 portdata->in_buffer[j], IN_BUFLEN,
615 sierra_indat_callback, port);
616 portdata->in_urbs[j] = urb;
617 }
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700618 }
619
Greg Kroah-Hartman17c23272007-06-20 14:22:23 +0900620 return 0;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700621}
622
623static void sierra_shutdown(struct usb_serial *serial)
624{
625 int i, j;
626 struct usb_serial_port *port;
627 struct sierra_port_private *portdata;
628
629 dbg("%s", __FUNCTION__);
630
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700631 for (i = 0; i < serial->num_ports; ++i) {
632 port = serial->port[i];
Greg Kroah-Hartmanf094e4f2007-04-26 00:12:01 -0700633 if (!port)
634 continue;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700635 portdata = usb_get_serial_port_data(port);
Greg Kroah-Hartmanf094e4f2007-04-26 00:12:01 -0700636 if (!portdata)
637 continue;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700638
639 for (j = 0; j < N_IN_URB; j++) {
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900640 usb_kill_urb(portdata->in_urbs[j]);
641 usb_free_urb(portdata->in_urbs[j]);
642 portdata->in_urbs[j] = NULL;
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700643 }
Greg Kroah-Hartman9e85c5f2007-06-20 14:22:23 +0900644 kfree(portdata);
645 usb_set_serial_port_data(port, NULL);
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700646 }
647}
648
Greg Kroah-Hartman964ee1de2006-10-17 10:17:58 -0700649static struct usb_serial_driver sierra_1port_device = {
650 .driver = {
651 .owner = THIS_MODULE,
652 .name = "sierra1",
653 },
654 .description = "Sierra USB modem (1 port)",
655 .id_table = id_table_1port,
Johannes Hölzld9b1b782006-12-17 21:50:24 +0100656 .usb_driver = &sierra_driver,
Greg Kroah-Hartman964ee1de2006-10-17 10:17:58 -0700657 .num_interrupt_in = NUM_DONT_CARE,
658 .num_bulk_in = 1,
659 .num_bulk_out = 1,
660 .num_ports = 1,
661 .open = sierra_open,
662 .close = sierra_close,
663 .write = sierra_write,
664 .write_room = sierra_write_room,
665 .chars_in_buffer = sierra_chars_in_buffer,
666 .throttle = sierra_rx_throttle,
667 .unthrottle = sierra_rx_unthrottle,
668 .ioctl = sierra_ioctl,
669 .set_termios = sierra_set_termios,
670 .break_ctl = sierra_break_ctl,
671 .tiocmget = sierra_tiocmget,
672 .tiocmset = sierra_tiocmset,
673 .attach = sierra_startup,
674 .shutdown = sierra_shutdown,
675 .read_int_callback = sierra_instat_callback,
676};
677
678static struct usb_serial_driver sierra_3port_device = {
679 .driver = {
680 .owner = THIS_MODULE,
681 .name = "sierra3",
682 },
683 .description = "Sierra USB modem (3 port)",
684 .id_table = id_table_3port,
Johannes Hölzld9b1b782006-12-17 21:50:24 +0100685 .usb_driver = &sierra_driver,
Greg Kroah-Hartman964ee1de2006-10-17 10:17:58 -0700686 .num_interrupt_in = NUM_DONT_CARE,
687 .num_bulk_in = 3,
688 .num_bulk_out = 3,
689 .num_ports = 3,
690 .open = sierra_open,
691 .close = sierra_close,
692 .write = sierra_write,
693 .write_room = sierra_write_room,
694 .chars_in_buffer = sierra_chars_in_buffer,
695 .throttle = sierra_rx_throttle,
696 .unthrottle = sierra_rx_unthrottle,
697 .ioctl = sierra_ioctl,
698 .set_termios = sierra_set_termios,
699 .break_ctl = sierra_break_ctl,
700 .tiocmget = sierra_tiocmget,
701 .tiocmset = sierra_tiocmset,
702 .attach = sierra_startup,
703 .shutdown = sierra_shutdown,
704 .read_int_callback = sierra_instat_callback,
705};
706
707/* Functions used by new usb-serial code. */
708static int __init sierra_init(void)
709{
710 int retval;
711 retval = usb_serial_register(&sierra_1port_device);
712 if (retval)
713 goto failed_1port_device_register;
714 retval = usb_serial_register(&sierra_3port_device);
715 if (retval)
716 goto failed_3port_device_register;
717
718
719 retval = usb_register(&sierra_driver);
720 if (retval)
721 goto failed_driver_register;
722
723 info(DRIVER_DESC ": " DRIVER_VERSION);
724
725 return 0;
726
727failed_driver_register:
728 usb_serial_deregister(&sierra_3port_device);
729failed_3port_device_register:
730 usb_serial_deregister(&sierra_1port_device);
731failed_1port_device_register:
732 return retval;
733}
734
735static void __exit sierra_exit(void)
736{
737 usb_deregister (&sierra_driver);
738 usb_serial_deregister(&sierra_1port_device);
739 usb_serial_deregister(&sierra_3port_device);
740}
741
742module_init(sierra_init);
743module_exit(sierra_exit);
744
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700745MODULE_AUTHOR(DRIVER_AUTHOR);
746MODULE_DESCRIPTION(DRIVER_DESC);
747MODULE_VERSION(DRIVER_VERSION);
Kevin Lloyd69de51f2006-06-30 11:17:55 -0700748MODULE_LICENSE("GPL");
Kevin Lloyd033a3fb2006-10-13 23:53:21 -0700749
750#ifdef CONFIG_USB_DEBUG
751module_param(debug, bool, S_IRUGO | S_IWUSR);
752MODULE_PARM_DESC(debug, "Debug messages");
753#endif
754