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Commit | Line | Data |
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69de51fd | 1 | /* |
033a3fb9 KL |
2 | USB Driver for Sierra Wireless |
3 | ||
f3564de4 | 4 | Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com> |
033a3fb9 KL |
5 | |
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> | |
033a3fb9 KL |
15 | */ |
16 | ||
212b8f0c | 17 | #define DRIVER_VERSION "v.1.3.3" |
f3564de4 | 18 | #define DRIVER_AUTHOR "Kevin Lloyd <klloyd@sierrawireless.com>" |
033a3fb9 | 19 | #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems" |
69de51fd KL |
20 | |
21 | #include <linux/kernel.h> | |
033a3fb9 KL |
22 | #include <linux/jiffies.h> |
23 | #include <linux/errno.h> | |
69de51fd | 24 | #include <linux/tty.h> |
033a3fb9 | 25 | #include <linux/tty_flip.h> |
69de51fd KL |
26 | #include <linux/module.h> |
27 | #include <linux/usb.h> | |
a969888c | 28 | #include <linux/usb/serial.h> |
69de51fd | 29 | |
228426ed KL |
30 | #define SWIMS_USB_REQUEST_SetPower 0x00 |
31 | #define SWIMS_USB_REQUEST_SetNmea 0x07 | |
112225b1 | 32 | |
112225b1 KL |
33 | #define N_IN_URB 4 |
34 | #define N_OUT_URB 4 | |
35 | #define IN_BUFLEN 4096 | |
36 | ||
37 | static int debug; | |
228426ed | 38 | static int nmea; |
112225b1 | 39 | |
82a24e68 | 40 | static int sierra_set_power_state(struct usb_device *udev, __u16 swiState) |
112225b1 KL |
41 | { |
42 | int result; | |
4e0fee82 | 43 | dev_dbg(&udev->dev, "%s", __func__); |
112225b1 | 44 | result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), |
228426ed | 45 | SWIMS_USB_REQUEST_SetPower, /* __u8 request */ |
f3564de4 | 46 | USB_TYPE_VENDOR, /* __u8 request type */ |
228426ed KL |
47 | swiState, /* __u16 value */ |
48 | 0, /* __u16 index */ | |
49 | NULL, /* void *data */ | |
50 | 0, /* __u16 size */ | |
51 | USB_CTRL_SET_TIMEOUT); /* int timeout */ | |
112225b1 KL |
52 | return result; |
53 | } | |
54 | ||
228426ed | 55 | static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable) |
112225b1 KL |
56 | { |
57 | int result; | |
4e0fee82 | 58 | dev_dbg(&udev->dev, "%s", __func__); |
228426ed KL |
59 | result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), |
60 | SWIMS_USB_REQUEST_SetNmea, /* __u8 request */ | |
f3564de4 | 61 | USB_TYPE_VENDOR, /* __u8 request type */ |
228426ed KL |
62 | enable, /* __u16 value */ |
63 | 0x0000, /* __u16 index */ | |
64 | NULL, /* void *data */ | |
65 | 0, /* __u16 size */ | |
66 | USB_CTRL_SET_TIMEOUT); /* int timeout */ | |
67 | return result; | |
68 | } | |
69 | ||
70 | static int sierra_calc_num_ports(struct usb_serial *serial) | |
71 | { | |
72 | int result; | |
73 | int *num_ports = usb_get_serial_data(serial); | |
4e0fee82 | 74 | dev_dbg(&serial->dev->dev, "%s", __func__); |
228426ed KL |
75 | |
76 | result = *num_ports; | |
77 | ||
78 | if (result) { | |
79 | kfree(num_ports); | |
80 | usb_set_serial_data(serial, NULL); | |
81 | } | |
82 | ||
83 | return result; | |
84 | } | |
85 | ||
7106967e KL |
86 | static int sierra_calc_interface(struct usb_serial *serial) |
87 | { | |
4e0fee82 KL |
88 | int interface; |
89 | struct usb_interface *p_interface; | |
90 | struct usb_host_interface *p_host_interface; | |
91 | dev_dbg(&serial->dev->dev, "%s", __func__); | |
7106967e | 92 | |
4e0fee82 KL |
93 | /* Get the interface structure pointer from the serial struct */ |
94 | p_interface = serial->interface; | |
7106967e | 95 | |
4e0fee82 KL |
96 | /* Get a pointer to the host interface structure */ |
97 | p_host_interface = p_interface->cur_altsetting; | |
7106967e | 98 | |
4e0fee82 KL |
99 | /* read the interface descriptor for this active altsetting |
100 | * to find out the interface number we are on | |
101 | */ | |
102 | interface = p_host_interface->desc.bInterfaceNumber; | |
7106967e | 103 | |
4e0fee82 | 104 | return interface; |
7106967e KL |
105 | } |
106 | ||
228426ed KL |
107 | static int sierra_probe(struct usb_serial *serial, |
108 | const struct usb_device_id *id) | |
109 | { | |
110 | int result = 0; | |
112225b1 | 111 | struct usb_device *udev; |
228426ed KL |
112 | int *num_ports; |
113 | u8 ifnum; | |
e3173b22 KL |
114 | u8 numendpoints; |
115 | ||
4e0fee82 | 116 | dev_dbg(&serial->dev->dev, "%s", __func__); |
112225b1 | 117 | |
228426ed KL |
118 | num_ports = kmalloc(sizeof(*num_ports), GFP_KERNEL); |
119 | if (!num_ports) | |
120 | return -ENOMEM; | |
121 | ||
122 | ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; | |
e3173b22 | 123 | numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints; |
228426ed | 124 | udev = serial->dev; |
112225b1 | 125 | |
e3173b22 KL |
126 | /* Figure out the interface number from the serial structure */ |
127 | ifnum = sierra_calc_interface(serial); | |
7106967e | 128 | |
e3173b22 KL |
129 | /* |
130 | * If this interface supports more than 1 alternate | |
131 | * select the 2nd one | |
132 | */ | |
133 | if (serial->interface->num_altsetting == 2) { | |
134 | dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n", | |
135 | ifnum); | |
136 | /* We know the alternate setting is 1 for the MC8785 */ | |
137 | usb_set_interface(udev, ifnum, 1); | |
138 | } | |
7106967e | 139 | |
e3173b22 | 140 | /* Dummy interface present on some SKUs should be ignored */ |
0585e4df | 141 | if (ifnum == 0x99) |
228426ed | 142 | *num_ports = 0; |
e3173b22 KL |
143 | else if (numendpoints <= 3) |
144 | *num_ports = 1; | |
228426ed | 145 | else |
e3173b22 KL |
146 | *num_ports = (numendpoints-1)/2; |
147 | ||
228426ed KL |
148 | /* |
149 | * save off our num_ports info so that we can use it in the | |
150 | * calc_num_ports callback | |
151 | */ | |
152 | usb_set_serial_data(serial, (void *)num_ports); | |
112225b1 | 153 | |
228426ed | 154 | return result; |
112225b1 | 155 | } |
033a3fb9 | 156 | |
69de51fd | 157 | static struct usb_device_id id_table [] = { |
e43062dd | 158 | { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */ |
69de51fd | 159 | { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */ |
e43062dd | 160 | { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */ |
f8834f1f | 161 | { USB_DEVICE(0x03f0, 0x1b1d) }, /* HP ev2200 a.k.a MC5720 */ |
69de51fd | 162 | { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */ |
4e0fee82 | 163 | { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */ |
b9e13ac3 | 164 | { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */ |
69de51fd | 165 | { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */ |
e43062dd | 166 | { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */ |
9454c46a | 167 | { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */ |
4e0fee82 KL |
168 | /* Sierra Wireless C597 */ |
169 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) }, | |
e3173b22 KL |
170 | /* Sierra Wireless Device */ |
171 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) }, | |
172 | { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless Device */ | |
73b2c205 KL |
173 | { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless Device */ |
174 | { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless Device */ | |
9454c46a | 175 | |
69de51fd | 176 | { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */ |
e43062dd | 177 | { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */ |
69de51fd | 178 | { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */ |
9454c46a | 179 | { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */ |
4e0fee82 | 180 | { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Lenovo) */ |
7f170a63 | 181 | { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */ |
8f7f85e9 | 182 | { USB_DEVICE(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */ |
69de51fd | 183 | { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */ |
7106967e | 184 | { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */ |
4e0fee82 KL |
185 | { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */ |
186 | { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */ | |
b77a5c70 | 187 | { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */ |
e3173b22 KL |
188 | { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */ |
189 | { USB_DEVICE(0x1199, 0x683C) }, /* Sierra Wireless MC8790 */ | |
190 | { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8790 */ | |
191 | { USB_DEVICE(0x1199, 0x683E) }, /* Sierra Wireless MC8790 */ | |
9454c46a KL |
192 | { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */ |
193 | { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */ | |
194 | { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */ | |
195 | { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */ | |
6835b32c | 196 | { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */ |
62aad3ab | 197 | { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */ |
e3173b22 KL |
198 | { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */ |
199 | { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */ | |
200 | /* Sierra Wireless C885 */ | |
201 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)}, | |
202 | /* Sierra Wireless Device */ | |
203 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)}, | |
204 | /* Sierra Wireless Device */ | |
73b2c205 KL |
205 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)}, |
206 | /* Sierra Wireless Device */ | |
e3173b22 KL |
207 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)}, |
208 | ||
209 | { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */ | |
210 | { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */ | |
112225b1 | 211 | |
033a3fb9 KL |
212 | { } |
213 | }; | |
964ee1de | 214 | MODULE_DEVICE_TABLE(usb, id_table); |
033a3fb9 | 215 | |
69de51fd | 216 | static struct usb_driver sierra_driver = { |
033a3fb9 | 217 | .name = "sierra", |
228426ed | 218 | .probe = usb_serial_probe, |
033a3fb9 KL |
219 | .disconnect = usb_serial_disconnect, |
220 | .id_table = id_table, | |
964ee1de | 221 | .no_dynamic_id = 1, |
033a3fb9 KL |
222 | }; |
223 | ||
033a3fb9 | 224 | struct sierra_port_private { |
17c23274 GKH |
225 | spinlock_t lock; /* lock the structure */ |
226 | int outstanding_urbs; /* number of out urbs in flight */ | |
227 | ||
4f4f9c53 | 228 | /* Input endpoints and buffers for this port */ |
033a3fb9 | 229 | struct urb *in_urbs[N_IN_URB]; |
033a3fb9 KL |
230 | |
231 | /* Settings for the port */ | |
232 | int rts_state; /* Handshaking pins (outputs) */ | |
233 | int dtr_state; | |
234 | int cts_state; /* Handshaking pins (inputs) */ | |
235 | int dsr_state; | |
236 | int dcd_state; | |
237 | int ri_state; | |
033a3fb9 KL |
238 | }; |
239 | ||
335f8514 | 240 | static int sierra_send_setup(struct usb_serial_port *port) |
69de51fd | 241 | { |
964ee1de GKH |
242 | struct usb_serial *serial = port->serial; |
243 | struct sierra_port_private *portdata; | |
228426ed | 244 | __u16 interface = 0; |
335f8514 | 245 | int val = 0; |
033a3fb9 | 246 | |
7384a922 | 247 | dev_dbg(&port->dev, "%s", __func__); |
033a3fb9 | 248 | |
964ee1de | 249 | portdata = usb_get_serial_port_data(port); |
033a3fb9 | 250 | |
335f8514 AC |
251 | if (portdata->dtr_state) |
252 | val |= 0x01; | |
253 | if (portdata->rts_state) | |
254 | val |= 0x02; | |
255 | ||
256 | /* If composite device then properly report interface */ | |
00b040de | 257 | if (serial->num_ports == 1) { |
335f8514 | 258 | interface = sierra_calc_interface(serial); |
00b040de AC |
259 | /* Control message is sent only to interfaces with |
260 | * interrupt_in endpoints | |
261 | */ | |
262 | if (port->interrupt_in_urb) { | |
263 | /* send control message */ | |
264 | return usb_control_msg(serial->dev, | |
265 | usb_rcvctrlpipe(serial->dev, 0), | |
266 | 0x22, 0x21, val, interface, | |
267 | NULL, 0, USB_CTRL_SET_TIMEOUT); | |
268 | } | |
269 | } | |
335f8514 AC |
270 | |
271 | /* Otherwise the need to do non-composite mapping */ | |
272 | else { | |
273 | if (port->bulk_out_endpointAddress == 2) | |
274 | interface = 0; | |
275 | else if (port->bulk_out_endpointAddress == 4) | |
276 | interface = 1; | |
277 | else if (port->bulk_out_endpointAddress == 5) | |
278 | interface = 2; | |
00b040de | 279 | return usb_control_msg(serial->dev, |
335f8514 AC |
280 | usb_rcvctrlpipe(serial->dev, 0), |
281 | 0x22, 0x21, val, interface, | |
282 | NULL, 0, USB_CTRL_SET_TIMEOUT); | |
00b040de | 283 | } |
964ee1de | 284 | return 0; |
69de51fd KL |
285 | } |
286 | ||
95da310e AC |
287 | static void sierra_set_termios(struct tty_struct *tty, |
288 | struct usb_serial_port *port, struct ktermios *old_termios) | |
033a3fb9 | 289 | { |
7384a922 | 290 | dev_dbg(&port->dev, "%s", __func__); |
95da310e | 291 | tty_termios_copy_hw(tty->termios, old_termios); |
335f8514 | 292 | sierra_send_setup(port); |
033a3fb9 KL |
293 | } |
294 | ||
95da310e | 295 | static int sierra_tiocmget(struct tty_struct *tty, struct file *file) |
033a3fb9 | 296 | { |
95da310e | 297 | struct usb_serial_port *port = tty->driver_data; |
033a3fb9 KL |
298 | unsigned int value; |
299 | struct sierra_port_private *portdata; | |
300 | ||
7384a922 | 301 | dev_dbg(&port->dev, "%s", __func__); |
033a3fb9 KL |
302 | portdata = usb_get_serial_port_data(port); |
303 | ||
304 | value = ((portdata->rts_state) ? TIOCM_RTS : 0) | | |
305 | ((portdata->dtr_state) ? TIOCM_DTR : 0) | | |
306 | ((portdata->cts_state) ? TIOCM_CTS : 0) | | |
307 | ((portdata->dsr_state) ? TIOCM_DSR : 0) | | |
308 | ((portdata->dcd_state) ? TIOCM_CAR : 0) | | |
309 | ((portdata->ri_state) ? TIOCM_RNG : 0); | |
310 | ||
311 | return value; | |
312 | } | |
313 | ||
95da310e | 314 | static int sierra_tiocmset(struct tty_struct *tty, struct file *file, |
033a3fb9 KL |
315 | unsigned int set, unsigned int clear) |
316 | { | |
95da310e | 317 | struct usb_serial_port *port = tty->driver_data; |
033a3fb9 KL |
318 | struct sierra_port_private *portdata; |
319 | ||
320 | portdata = usb_get_serial_port_data(port); | |
321 | ||
322 | if (set & TIOCM_RTS) | |
323 | portdata->rts_state = 1; | |
324 | if (set & TIOCM_DTR) | |
325 | portdata->dtr_state = 1; | |
326 | ||
327 | if (clear & TIOCM_RTS) | |
328 | portdata->rts_state = 0; | |
329 | if (clear & TIOCM_DTR) | |
330 | portdata->dtr_state = 0; | |
335f8514 | 331 | return sierra_send_setup(port); |
033a3fb9 KL |
332 | } |
333 | ||
b9a44bc1 EP |
334 | static void sierra_release_urb(struct urb *urb) |
335 | { | |
336 | struct usb_serial_port *port; | |
337 | if (urb) { | |
338 | port = urb->context; | |
339 | dev_dbg(&port->dev, "%s: %p\n", __func__, urb); | |
340 | kfree(urb->transfer_buffer); | |
341 | usb_free_urb(urb); | |
342 | } | |
343 | } | |
344 | ||
17c23274 GKH |
345 | static void sierra_outdat_callback(struct urb *urb) |
346 | { | |
347 | struct usb_serial_port *port = urb->context; | |
348 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); | |
349 | int status = urb->status; | |
350 | unsigned long flags; | |
351 | ||
7384a922 | 352 | dev_dbg(&port->dev, "%s - port %d", __func__, port->number); |
17c23274 GKH |
353 | |
354 | /* free up the transfer buffer, as usb_free_urb() does not do this */ | |
355 | kfree(urb->transfer_buffer); | |
356 | ||
357 | if (status) | |
7384a922 KL |
358 | dev_dbg(&port->dev, "%s - nonzero write bulk status " |
359 | "received: %d", __func__, status); | |
17c23274 GKH |
360 | |
361 | spin_lock_irqsave(&portdata->lock, flags); | |
362 | --portdata->outstanding_urbs; | |
363 | spin_unlock_irqrestore(&portdata->lock, flags); | |
364 | ||
365 | usb_serial_port_softint(port); | |
366 | } | |
367 | ||
033a3fb9 | 368 | /* Write */ |
95da310e AC |
369 | static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port, |
370 | const unsigned char *buf, int count) | |
033a3fb9 | 371 | { |
17c23274 GKH |
372 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); |
373 | struct usb_serial *serial = port->serial; | |
374 | unsigned long flags; | |
375 | unsigned char *buffer; | |
376 | struct urb *urb; | |
377 | int status; | |
033a3fb9 KL |
378 | |
379 | portdata = usb_get_serial_port_data(port); | |
380 | ||
7384a922 | 381 | dev_dbg(&port->dev, "%s: write (%d chars)", __func__, count); |
033a3fb9 | 382 | |
17c23274 GKH |
383 | spin_lock_irqsave(&portdata->lock, flags); |
384 | if (portdata->outstanding_urbs > N_OUT_URB) { | |
385 | spin_unlock_irqrestore(&portdata->lock, flags); | |
7384a922 | 386 | dev_dbg(&port->dev, "%s - write limit hit\n", __func__); |
17c23274 GKH |
387 | return 0; |
388 | } | |
389 | portdata->outstanding_urbs++; | |
390 | spin_unlock_irqrestore(&portdata->lock, flags); | |
391 | ||
392 | buffer = kmalloc(count, GFP_ATOMIC); | |
393 | if (!buffer) { | |
394 | dev_err(&port->dev, "out of memory\n"); | |
395 | count = -ENOMEM; | |
396 | goto error_no_buffer; | |
397 | } | |
033a3fb9 | 398 | |
17c23274 GKH |
399 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
400 | if (!urb) { | |
401 | dev_err(&port->dev, "no more free urbs\n"); | |
402 | count = -ENOMEM; | |
403 | goto error_no_urb; | |
404 | } | |
033a3fb9 | 405 | |
17c23274 | 406 | memcpy(buffer, buf, count); |
033a3fb9 | 407 | |
441b62c1 | 408 | usb_serial_debug_data(debug, &port->dev, __func__, count, buffer); |
17c23274 GKH |
409 | |
410 | usb_fill_bulk_urb(urb, serial->dev, | |
411 | usb_sndbulkpipe(serial->dev, | |
412 | port->bulk_out_endpointAddress), | |
413 | buffer, count, sierra_outdat_callback, port); | |
414 | ||
415 | /* send it down the pipe */ | |
416 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
417 | if (status) { | |
418 | dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " | |
441b62c1 | 419 | "with status = %d\n", __func__, status); |
17c23274 GKH |
420 | count = status; |
421 | goto error; | |
033a3fb9 KL |
422 | } |
423 | ||
17c23274 GKH |
424 | /* we are done with this urb, so let the host driver |
425 | * really free it when it is finished with it */ | |
426 | usb_free_urb(urb); | |
427 | ||
428 | return count; | |
429 | error: | |
430 | usb_free_urb(urb); | |
431 | error_no_urb: | |
432 | kfree(buffer); | |
433 | error_no_buffer: | |
434 | spin_lock_irqsave(&portdata->lock, flags); | |
435 | --portdata->outstanding_urbs; | |
436 | spin_unlock_irqrestore(&portdata->lock, flags); | |
033a3fb9 KL |
437 | return count; |
438 | } | |
439 | ||
440 | static void sierra_indat_callback(struct urb *urb) | |
441 | { | |
442 | int err; | |
443 | int endpoint; | |
444 | struct usb_serial_port *port; | |
445 | struct tty_struct *tty; | |
446 | unsigned char *data = urb->transfer_buffer; | |
17dd2215 | 447 | int status = urb->status; |
033a3fb9 | 448 | |
441b62c1 | 449 | dbg("%s: %p", __func__, urb); |
033a3fb9 KL |
450 | |
451 | endpoint = usb_pipeendpoint(urb->pipe); | |
cdc97792 | 452 | port = urb->context; |
033a3fb9 | 453 | |
17dd2215 | 454 | if (status) { |
7384a922 KL |
455 | dev_dbg(&port->dev, "%s: nonzero status: %d on" |
456 | " endpoint %02x.", __func__, status, endpoint); | |
033a3fb9 | 457 | } else { |
033a3fb9 | 458 | if (urb->actual_length) { |
d95186d1 | 459 | tty = tty_port_tty_get(&port->port); |
033a3fb9 KL |
460 | tty_buffer_request_room(tty, urb->actual_length); |
461 | tty_insert_flip_string(tty, data, urb->actual_length); | |
462 | tty_flip_buffer_push(tty); | |
4a90f09b AC |
463 | tty_kref_put(tty); |
464 | } else | |
7384a922 KL |
465 | dev_dbg(&port->dev, "%s: empty read urb" |
466 | " received", __func__); | |
033a3fb9 KL |
467 | |
468 | /* Resubmit urb so we continue receiving */ | |
b9a44bc1 | 469 | if (port->port.count && status != -ESHUTDOWN && status != -EPERM) { |
033a3fb9 KL |
470 | err = usb_submit_urb(urb, GFP_ATOMIC); |
471 | if (err) | |
17c23274 | 472 | dev_err(&port->dev, "resubmit read urb failed." |
898eb71c | 473 | "(%d)\n", err); |
033a3fb9 KL |
474 | } |
475 | } | |
476 | return; | |
477 | } | |
478 | ||
033a3fb9 KL |
479 | static void sierra_instat_callback(struct urb *urb) |
480 | { | |
481 | int err; | |
17dd2215 | 482 | int status = urb->status; |
cdc97792 | 483 | struct usb_serial_port *port = urb->context; |
033a3fb9 KL |
484 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); |
485 | struct usb_serial *serial = port->serial; | |
486 | ||
7384a922 KL |
487 | dev_dbg(&port->dev, "%s", __func__); |
488 | dev_dbg(&port->dev, "%s: urb %p port %p has data %p", __func__, | |
489 | urb, port, portdata); | |
033a3fb9 | 490 | |
17dd2215 | 491 | if (status == 0) { |
033a3fb9 KL |
492 | struct usb_ctrlrequest *req_pkt = |
493 | (struct usb_ctrlrequest *)urb->transfer_buffer; | |
494 | ||
495 | if (!req_pkt) { | |
7384a922 KL |
496 | dev_dbg(&port->dev, "%s: NULL req_pkt\n", |
497 | __func__); | |
033a3fb9 KL |
498 | return; |
499 | } | |
500 | if ((req_pkt->bRequestType == 0xA1) && | |
501 | (req_pkt->bRequest == 0x20)) { | |
502 | int old_dcd_state; | |
503 | unsigned char signals = *((unsigned char *) | |
504 | urb->transfer_buffer + | |
505 | sizeof(struct usb_ctrlrequest)); | |
4a90f09b | 506 | struct tty_struct *tty; |
033a3fb9 | 507 | |
7384a922 KL |
508 | dev_dbg(&port->dev, "%s: signal x%x", __func__, |
509 | signals); | |
033a3fb9 KL |
510 | |
511 | old_dcd_state = portdata->dcd_state; | |
512 | portdata->cts_state = 1; | |
513 | portdata->dcd_state = ((signals & 0x01) ? 1 : 0); | |
514 | portdata->dsr_state = ((signals & 0x02) ? 1 : 0); | |
515 | portdata->ri_state = ((signals & 0x08) ? 1 : 0); | |
516 | ||
4a90f09b AC |
517 | tty = tty_port_tty_get(&port->port); |
518 | if (tty && !C_CLOCAL(tty) && | |
033a3fb9 | 519 | old_dcd_state && !portdata->dcd_state) |
4a90f09b AC |
520 | tty_hangup(tty); |
521 | tty_kref_put(tty); | |
033a3fb9 | 522 | } else { |
7384a922 KL |
523 | dev_dbg(&port->dev, "%s: type %x req %x", |
524 | __func__, req_pkt->bRequestType, | |
525 | req_pkt->bRequest); | |
033a3fb9 KL |
526 | } |
527 | } else | |
7384a922 | 528 | dev_dbg(&port->dev, "%s: error %d", __func__, status); |
033a3fb9 KL |
529 | |
530 | /* Resubmit urb so we continue receiving IRQ data */ | |
17dd2215 | 531 | if (status != -ESHUTDOWN) { |
033a3fb9 KL |
532 | urb->dev = serial->dev; |
533 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
534 | if (err) | |
7384a922 KL |
535 | dev_dbg(&port->dev, "%s: resubmit intr urb " |
536 | "failed. (%d)", __func__, err); | |
033a3fb9 KL |
537 | } |
538 | } | |
539 | ||
95da310e | 540 | static int sierra_write_room(struct tty_struct *tty) |
033a3fb9 | 541 | { |
95da310e | 542 | struct usb_serial_port *port = tty->driver_data; |
17c23274 GKH |
543 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); |
544 | unsigned long flags; | |
033a3fb9 | 545 | |
7384a922 | 546 | dev_dbg(&port->dev, "%s - port %d", __func__, port->number); |
033a3fb9 | 547 | |
17c23274 GKH |
548 | /* try to give a good number back based on if we have any free urbs at |
549 | * this point in time */ | |
550 | spin_lock_irqsave(&portdata->lock, flags); | |
551 | if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) { | |
552 | spin_unlock_irqrestore(&portdata->lock, flags); | |
7384a922 | 553 | dev_dbg(&port->dev, "%s - write limit hit\n", __func__); |
17c23274 | 554 | return 0; |
033a3fb9 | 555 | } |
17c23274 | 556 | spin_unlock_irqrestore(&portdata->lock, flags); |
033a3fb9 | 557 | |
17c23274 | 558 | return 2048; |
033a3fb9 KL |
559 | } |
560 | ||
b9a44bc1 | 561 | static void sierra_stop_rx_urbs(struct usb_serial_port *port) |
033a3fb9 | 562 | { |
9e85c5f6 | 563 | int i; |
b9a44bc1 | 564 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); |
033a3fb9 | 565 | |
b9a44bc1 EP |
566 | for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) |
567 | usb_kill_urb(portdata->in_urbs[i]); | |
033a3fb9 | 568 | |
b9a44bc1 EP |
569 | usb_kill_urb(port->interrupt_in_urb); |
570 | } | |
033a3fb9 | 571 | |
b9a44bc1 EP |
572 | static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags) |
573 | { | |
574 | int ok_cnt; | |
575 | int err = -EINVAL; | |
576 | int i; | |
577 | struct urb *urb; | |
578 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); | |
033a3fb9 | 579 | |
b9a44bc1 EP |
580 | ok_cnt = 0; |
581 | for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) { | |
033a3fb9 | 582 | urb = portdata->in_urbs[i]; |
9e85c5f6 | 583 | if (!urb) |
033a3fb9 | 584 | continue; |
b9a44bc1 EP |
585 | err = usb_submit_urb(urb, mem_flags); |
586 | if (err) { | |
587 | dev_err(&port->dev, "%s: submit urb failed: %d\n", | |
588 | __func__, err); | |
589 | } else { | |
590 | ok_cnt++; | |
033a3fb9 | 591 | } |
b9a44bc1 | 592 | } |
033a3fb9 | 593 | |
b9a44bc1 EP |
594 | if (ok_cnt && port->interrupt_in_urb) { |
595 | err = usb_submit_urb(port->interrupt_in_urb, mem_flags); | |
596 | if (err) { | |
597 | dev_err(&port->dev, "%s: submit intr urb failed: %d\n", | |
598 | __func__, err); | |
033a3fb9 KL |
599 | } |
600 | } | |
601 | ||
b9a44bc1 EP |
602 | if (ok_cnt > 0) /* at least one rx urb submitted */ |
603 | return 0; | |
604 | else | |
605 | return err; | |
606 | } | |
607 | ||
608 | static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint, | |
609 | int dir, void *ctx, int len, | |
610 | gfp_t mem_flags, | |
611 | usb_complete_t callback) | |
612 | { | |
613 | struct urb *urb; | |
614 | u8 *buf; | |
615 | ||
616 | if (endpoint == -1) | |
617 | return NULL; | |
033a3fb9 | 618 | |
b9a44bc1 EP |
619 | urb = usb_alloc_urb(0, mem_flags); |
620 | if (urb == NULL) { | |
621 | dev_dbg(&serial->dev->dev, "%s: alloc for endpoint %d failed\n", | |
622 | __func__, endpoint); | |
623 | return NULL; | |
9e85c5f6 | 624 | } |
b9a44bc1 EP |
625 | |
626 | buf = kmalloc(len, mem_flags); | |
627 | if (buf) { | |
628 | /* Fill URB using supplied data */ | |
629 | usb_fill_bulk_urb(urb, serial->dev, | |
630 | usb_sndbulkpipe(serial->dev, endpoint) | dir, | |
631 | buf, len, callback, ctx); | |
632 | ||
633 | /* debug */ | |
634 | dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__, | |
635 | dir == USB_DIR_IN ? 'i' : 'o', urb, buf); | |
636 | } else { | |
637 | dev_dbg(&serial->dev->dev, "%s %c u:%p d:%p\n", __func__, | |
638 | dir == USB_DIR_IN ? 'i' : 'o', urb, buf); | |
639 | ||
640 | sierra_release_urb(urb); | |
641 | urb = NULL; | |
642 | } | |
643 | ||
644 | return urb; | |
033a3fb9 KL |
645 | } |
646 | ||
b9a44bc1 | 647 | static void sierra_close(struct usb_serial_port *port) |
033a3fb9 | 648 | { |
b9a44bc1 | 649 | int i; |
033a3fb9 KL |
650 | struct usb_serial *serial = port->serial; |
651 | struct sierra_port_private *portdata; | |
652 | ||
b9a44bc1 | 653 | dev_dbg(&port->dev, "%s\n", __func__); |
033a3fb9 | 654 | portdata = usb_get_serial_port_data(port); |
b9a44bc1 EP |
655 | |
656 | portdata->rts_state = 0; | |
657 | portdata->dtr_state = 0; | |
033a3fb9 KL |
658 | |
659 | if (serial->dev) { | |
e33fe4d8 ON |
660 | mutex_lock(&serial->disc_mutex); |
661 | if (!serial->disconnected) | |
335f8514 | 662 | sierra_send_setup(port); |
e33fe4d8 | 663 | mutex_unlock(&serial->disc_mutex); |
b9a44bc1 EP |
664 | |
665 | /* Stop reading urbs */ | |
666 | sierra_stop_rx_urbs(port); | |
667 | /* .. and release them */ | |
668 | for (i = 0; i < N_IN_URB; i++) { | |
669 | sierra_release_urb(portdata->in_urbs[i]); | |
670 | portdata->in_urbs[i] = NULL; | |
671 | } | |
335f8514 AC |
672 | } |
673 | } | |
674 | ||
b9a44bc1 EP |
675 | static int sierra_open(struct tty_struct *tty, |
676 | struct usb_serial_port *port, struct file *filp) | |
335f8514 | 677 | { |
b9a44bc1 EP |
678 | struct sierra_port_private *portdata; |
679 | struct usb_serial *serial = port->serial; | |
335f8514 | 680 | int i; |
b9a44bc1 EP |
681 | int err; |
682 | int endpoint; | |
683 | struct urb *urb; | |
684 | ||
685 | portdata = usb_get_serial_port_data(port); | |
686 | ||
687 | dev_dbg(&port->dev, "%s", __func__); | |
688 | ||
689 | /* Set some sane defaults */ | |
690 | portdata->rts_state = 1; | |
691 | portdata->dtr_state = 1; | |
692 | ||
693 | ||
694 | endpoint = port->bulk_in_endpointAddress; | |
695 | for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) { | |
696 | urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port, | |
697 | IN_BUFLEN, GFP_KERNEL, | |
698 | sierra_indat_callback); | |
699 | portdata->in_urbs[i] = urb; | |
700 | } | |
701 | /* clear halt condition */ | |
702 | usb_clear_halt(serial->dev, | |
703 | usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN); | |
704 | ||
705 | err = sierra_submit_rx_urbs(port, GFP_KERNEL); | |
706 | if (err) { | |
707 | /* get rid of everything as in close */ | |
708 | sierra_close(port); | |
709 | return err; | |
710 | } | |
711 | sierra_send_setup(port); | |
712 | ||
713 | return 0; | |
714 | } | |
715 | ||
716 | ||
717 | static void sierra_dtr_rts(struct usb_serial_port *port, int on) | |
718 | { | |
335f8514 AC |
719 | struct usb_serial *serial = port->serial; |
720 | struct sierra_port_private *portdata; | |
033a3fb9 | 721 | |
335f8514 | 722 | portdata = usb_get_serial_port_data(port); |
b9a44bc1 EP |
723 | portdata->rts_state = on; |
724 | portdata->dtr_state = on; | |
335f8514 AC |
725 | |
726 | if (serial->dev) { | |
b9a44bc1 EP |
727 | mutex_lock(&serial->disc_mutex); |
728 | if (!serial->disconnected) | |
729 | sierra_send_setup(port); | |
730 | mutex_unlock(&serial->disc_mutex); | |
033a3fb9 | 731 | } |
033a3fb9 KL |
732 | } |
733 | ||
033a3fb9 KL |
734 | static int sierra_startup(struct usb_serial *serial) |
735 | { | |
033a3fb9 KL |
736 | struct usb_serial_port *port; |
737 | struct sierra_port_private *portdata; | |
9e85c5f6 | 738 | int i; |
033a3fb9 | 739 | |
7384a922 | 740 | dev_dbg(&serial->dev->dev, "%s", __func__); |
033a3fb9 | 741 | |
228426ed | 742 | /* Set Device mode to D0 */ |
112225b1 KL |
743 | sierra_set_power_state(serial->dev, 0x0000); |
744 | ||
228426ed KL |
745 | /* Check NMEA and set */ |
746 | if (nmea) | |
747 | sierra_vsc_set_nmea(serial->dev, 1); | |
748 | ||
033a3fb9 KL |
749 | /* Now setup per port private data */ |
750 | for (i = 0; i < serial->num_ports; i++) { | |
751 | port = serial->port[i]; | |
752 | portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); | |
753 | if (!portdata) { | |
7384a922 KL |
754 | dev_dbg(&port->dev, "%s: kmalloc for " |
755 | "sierra_port_private (%d) failed!.", | |
756 | __func__, i); | |
17c23274 | 757 | return -ENOMEM; |
033a3fb9 | 758 | } |
17c23274 | 759 | spin_lock_init(&portdata->lock); |
b9a44bc1 | 760 | /* Set the port private data pointer */ |
033a3fb9 | 761 | usb_set_serial_port_data(port, portdata); |
033a3fb9 KL |
762 | } |
763 | ||
17c23274 | 764 | return 0; |
033a3fb9 KL |
765 | } |
766 | ||
767 | static void sierra_shutdown(struct usb_serial *serial) | |
768 | { | |
b9a44bc1 | 769 | int i; |
033a3fb9 KL |
770 | struct usb_serial_port *port; |
771 | struct sierra_port_private *portdata; | |
772 | ||
7384a922 | 773 | dev_dbg(&serial->dev->dev, "%s", __func__); |
033a3fb9 | 774 | |
033a3fb9 KL |
775 | for (i = 0; i < serial->num_ports; ++i) { |
776 | port = serial->port[i]; | |
f094e4f3 GKH |
777 | if (!port) |
778 | continue; | |
033a3fb9 | 779 | portdata = usb_get_serial_port_data(port); |
f094e4f3 GKH |
780 | if (!portdata) |
781 | continue; | |
9e85c5f6 GKH |
782 | kfree(portdata); |
783 | usb_set_serial_port_data(port, NULL); | |
033a3fb9 KL |
784 | } |
785 | } | |
786 | ||
228426ed | 787 | static struct usb_serial_driver sierra_device = { |
964ee1de GKH |
788 | .driver = { |
789 | .owner = THIS_MODULE, | |
4e0fee82 | 790 | .name = "sierra", |
964ee1de | 791 | }, |
228426ed KL |
792 | .description = "Sierra USB modem", |
793 | .id_table = id_table, | |
d9b1b787 | 794 | .usb_driver = &sierra_driver, |
228426ed KL |
795 | .calc_num_ports = sierra_calc_num_ports, |
796 | .probe = sierra_probe, | |
964ee1de GKH |
797 | .open = sierra_open, |
798 | .close = sierra_close, | |
335f8514 | 799 | .dtr_rts = sierra_dtr_rts, |
964ee1de GKH |
800 | .write = sierra_write, |
801 | .write_room = sierra_write_room, | |
964ee1de | 802 | .set_termios = sierra_set_termios, |
964ee1de GKH |
803 | .tiocmget = sierra_tiocmget, |
804 | .tiocmset = sierra_tiocmset, | |
805 | .attach = sierra_startup, | |
806 | .shutdown = sierra_shutdown, | |
807 | .read_int_callback = sierra_instat_callback, | |
808 | }; | |
809 | ||
810 | /* Functions used by new usb-serial code. */ | |
811 | static int __init sierra_init(void) | |
812 | { | |
813 | int retval; | |
228426ed | 814 | retval = usb_serial_register(&sierra_device); |
964ee1de | 815 | if (retval) |
228426ed | 816 | goto failed_device_register; |
964ee1de GKH |
817 | |
818 | ||
819 | retval = usb_register(&sierra_driver); | |
820 | if (retval) | |
821 | goto failed_driver_register; | |
822 | ||
c197a8db GKH |
823 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
824 | DRIVER_DESC "\n"); | |
964ee1de GKH |
825 | |
826 | return 0; | |
827 | ||
828 | failed_driver_register: | |
228426ed KL |
829 | usb_serial_deregister(&sierra_device); |
830 | failed_device_register: | |
964ee1de GKH |
831 | return retval; |
832 | } | |
833 | ||
834 | static void __exit sierra_exit(void) | |
835 | { | |
9660ea36 | 836 | usb_deregister(&sierra_driver); |
228426ed | 837 | usb_serial_deregister(&sierra_device); |
964ee1de GKH |
838 | } |
839 | ||
840 | module_init(sierra_init); | |
841 | module_exit(sierra_exit); | |
842 | ||
033a3fb9 KL |
843 | MODULE_AUTHOR(DRIVER_AUTHOR); |
844 | MODULE_DESCRIPTION(DRIVER_DESC); | |
845 | MODULE_VERSION(DRIVER_VERSION); | |
69de51fd | 846 | MODULE_LICENSE("GPL"); |
033a3fb9 | 847 | |
4e0fee82 | 848 | module_param(nmea, bool, S_IRUGO | S_IWUSR); |
228426ed KL |
849 | MODULE_PARM_DESC(nmea, "NMEA streaming"); |
850 | ||
033a3fb9 KL |
851 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
852 | MODULE_PARM_DESC(debug, "Debug messages"); |