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Commit | Line | Data |
---|---|---|
69de51fd | 1 | /* |
033a3fb9 KL |
2 | USB Driver for Sierra Wireless |
3 | ||
40d2ff32 EP |
4 | Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>, |
5 | ||
6 | Copyright (C) 2008, 2009 Elina Pasheva, Matthew Safar, Rory Filer | |
7 | <linux@sierrawireless.com> | |
033a3fb9 KL |
8 | |
9 | IMPORTANT DISCLAIMER: This driver is not commercially supported by | |
10 | Sierra Wireless. Use at your own risk. | |
11 | ||
12 | This driver is free software; you can redistribute it and/or modify | |
13 | it under the terms of Version 2 of the GNU General Public License as | |
14 | published by the Free Software Foundation. | |
15 | ||
16 | Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de> | |
17 | Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org> | |
033a3fb9 KL |
18 | */ |
19 | ||
238ebd13 | 20 | #define DRIVER_VERSION "v.1.3.7" |
40d2ff32 | 21 | #define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer" |
033a3fb9 | 22 | #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems" |
69de51fd KL |
23 | |
24 | #include <linux/kernel.h> | |
033a3fb9 KL |
25 | #include <linux/jiffies.h> |
26 | #include <linux/errno.h> | |
69de51fd | 27 | #include <linux/tty.h> |
033a3fb9 | 28 | #include <linux/tty_flip.h> |
69de51fd KL |
29 | #include <linux/module.h> |
30 | #include <linux/usb.h> | |
a969888c | 31 | #include <linux/usb/serial.h> |
69de51fd | 32 | |
228426ed KL |
33 | #define SWIMS_USB_REQUEST_SetPower 0x00 |
34 | #define SWIMS_USB_REQUEST_SetNmea 0x07 | |
112225b1 | 35 | |
b748bb71 EP |
36 | #define N_IN_URB 8 |
37 | #define N_OUT_URB 64 | |
112225b1 KL |
38 | #define IN_BUFLEN 4096 |
39 | ||
40d2ff32 EP |
40 | #define MAX_TRANSFER (PAGE_SIZE - 512) |
41 | /* MAX_TRANSFER is chosen so that the VM is not stressed by | |
42 | allocations > PAGE_SIZE and the number of packets in a page | |
43 | is an integer 512 is the largest possible packet on EHCI */ | |
44 | ||
112225b1 | 45 | static int debug; |
228426ed | 46 | static int nmea; |
112225b1 | 47 | |
4db2299d EP |
48 | /* Used in interface blacklisting */ |
49 | struct sierra_iface_info { | |
50 | const u32 infolen; /* number of interface numbers on blacklist */ | |
51 | const u8 *ifaceinfo; /* pointer to the array holding the numbers */ | |
52 | }; | |
53 | ||
82a24e68 | 54 | static int sierra_set_power_state(struct usb_device *udev, __u16 swiState) |
112225b1 KL |
55 | { |
56 | int result; | |
5d44b361 | 57 | dev_dbg(&udev->dev, "%s\n", __func__); |
112225b1 | 58 | result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), |
228426ed | 59 | SWIMS_USB_REQUEST_SetPower, /* __u8 request */ |
f3564de4 | 60 | USB_TYPE_VENDOR, /* __u8 request type */ |
228426ed KL |
61 | swiState, /* __u16 value */ |
62 | 0, /* __u16 index */ | |
63 | NULL, /* void *data */ | |
64 | 0, /* __u16 size */ | |
65 | USB_CTRL_SET_TIMEOUT); /* int timeout */ | |
112225b1 KL |
66 | return result; |
67 | } | |
68 | ||
228426ed | 69 | static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable) |
112225b1 KL |
70 | { |
71 | int result; | |
5d44b361 | 72 | dev_dbg(&udev->dev, "%s\n", __func__); |
228426ed KL |
73 | result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), |
74 | SWIMS_USB_REQUEST_SetNmea, /* __u8 request */ | |
f3564de4 | 75 | USB_TYPE_VENDOR, /* __u8 request type */ |
228426ed KL |
76 | enable, /* __u16 value */ |
77 | 0x0000, /* __u16 index */ | |
78 | NULL, /* void *data */ | |
79 | 0, /* __u16 size */ | |
80 | USB_CTRL_SET_TIMEOUT); /* int timeout */ | |
81 | return result; | |
82 | } | |
83 | ||
84 | static int sierra_calc_num_ports(struct usb_serial *serial) | |
85 | { | |
9636b683 EP |
86 | int num_ports = 0; |
87 | u8 ifnum, numendpoints; | |
228426ed | 88 | |
9636b683 | 89 | dev_dbg(&serial->dev->dev, "%s\n", __func__); |
228426ed | 90 | |
9636b683 EP |
91 | ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; |
92 | numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints; | |
228426ed | 93 | |
9636b683 EP |
94 | /* Dummy interface present on some SKUs should be ignored */ |
95 | if (ifnum == 0x99) | |
96 | num_ports = 0; | |
97 | else if (numendpoints <= 3) | |
98 | num_ports = 1; | |
99 | else | |
100 | num_ports = (numendpoints-1)/2; | |
101 | return num_ports; | |
228426ed KL |
102 | } |
103 | ||
4db2299d EP |
104 | static int is_blacklisted(const u8 ifnum, |
105 | const struct sierra_iface_info *blacklist) | |
106 | { | |
107 | const u8 *info; | |
108 | int i; | |
109 | ||
110 | if (blacklist) { | |
111 | info = blacklist->ifaceinfo; | |
112 | ||
113 | for (i = 0; i < blacklist->infolen; i++) { | |
114 | if (info[i] == ifnum) | |
115 | return 1; | |
116 | } | |
117 | } | |
118 | return 0; | |
119 | } | |
120 | ||
7106967e KL |
121 | static int sierra_calc_interface(struct usb_serial *serial) |
122 | { | |
4e0fee82 KL |
123 | int interface; |
124 | struct usb_interface *p_interface; | |
125 | struct usb_host_interface *p_host_interface; | |
5d44b361 | 126 | dev_dbg(&serial->dev->dev, "%s\n", __func__); |
7106967e | 127 | |
4e0fee82 KL |
128 | /* Get the interface structure pointer from the serial struct */ |
129 | p_interface = serial->interface; | |
7106967e | 130 | |
4e0fee82 KL |
131 | /* Get a pointer to the host interface structure */ |
132 | p_host_interface = p_interface->cur_altsetting; | |
7106967e | 133 | |
4e0fee82 KL |
134 | /* read the interface descriptor for this active altsetting |
135 | * to find out the interface number we are on | |
136 | */ | |
137 | interface = p_host_interface->desc.bInterfaceNumber; | |
7106967e | 138 | |
4e0fee82 | 139 | return interface; |
7106967e KL |
140 | } |
141 | ||
228426ed KL |
142 | static int sierra_probe(struct usb_serial *serial, |
143 | const struct usb_device_id *id) | |
144 | { | |
145 | int result = 0; | |
112225b1 | 146 | struct usb_device *udev; |
228426ed | 147 | u8 ifnum; |
112225b1 | 148 | |
228426ed | 149 | udev = serial->dev; |
9636b683 | 150 | dev_dbg(&udev->dev, "%s\n", __func__); |
112225b1 | 151 | |
e3173b22 | 152 | ifnum = sierra_calc_interface(serial); |
e3173b22 KL |
153 | /* |
154 | * If this interface supports more than 1 alternate | |
155 | * select the 2nd one | |
156 | */ | |
157 | if (serial->interface->num_altsetting == 2) { | |
158 | dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n", | |
159 | ifnum); | |
160 | /* We know the alternate setting is 1 for the MC8785 */ | |
161 | usb_set_interface(udev, ifnum, 1); | |
162 | } | |
7106967e | 163 | |
4db2299d EP |
164 | /* ifnum could have changed - by calling usb_set_interface */ |
165 | ifnum = sierra_calc_interface(serial); | |
166 | ||
167 | if (is_blacklisted(ifnum, | |
168 | (struct sierra_iface_info *)id->driver_info)) { | |
169 | dev_dbg(&serial->dev->dev, | |
170 | "Ignoring blacklisted interface #%d\n", ifnum); | |
171 | return -ENODEV; | |
172 | } | |
173 | ||
228426ed | 174 | return result; |
112225b1 | 175 | } |
033a3fb9 | 176 | |
4db2299d EP |
177 | static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11 }; |
178 | static const struct sierra_iface_info direct_ip_interface_blacklist = { | |
179 | .infolen = ARRAY_SIZE(direct_ip_non_serial_ifaces), | |
180 | .ifaceinfo = direct_ip_non_serial_ifaces, | |
181 | }; | |
182 | ||
69de51fd | 183 | static struct usb_device_id id_table [] = { |
e43062dd | 184 | { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */ |
69de51fd | 185 | { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */ |
e43062dd | 186 | { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */ |
f8834f1f | 187 | { USB_DEVICE(0x03f0, 0x1b1d) }, /* HP ev2200 a.k.a MC5720 */ |
69de51fd | 188 | { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */ |
4e0fee82 | 189 | { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */ |
b9e13ac3 | 190 | { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */ |
69de51fd | 191 | { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */ |
e43062dd | 192 | { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */ |
9454c46a | 193 | { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */ |
4e0fee82 KL |
194 | /* Sierra Wireless C597 */ |
195 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) }, | |
e3173b22 KL |
196 | /* Sierra Wireless Device */ |
197 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) }, | |
198 | { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless Device */ | |
73b2c205 KL |
199 | { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless Device */ |
200 | { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless Device */ | |
9454c46a | 201 | |
69de51fd | 202 | { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */ |
e43062dd | 203 | { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */ |
69de51fd | 204 | { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */ |
9454c46a | 205 | { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */ |
4e0fee82 | 206 | { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Lenovo) */ |
7f170a63 | 207 | { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */ |
8f7f85e9 | 208 | { USB_DEVICE(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */ |
69de51fd | 209 | { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */ |
7106967e | 210 | { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */ |
4e0fee82 KL |
211 | { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */ |
212 | { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */ | |
b77a5c70 | 213 | { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */ |
e3173b22 | 214 | { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */ |
4db2299d EP |
215 | /* Sierra Wireless MC8790, MC8791, MC8792 Composite */ |
216 | { USB_DEVICE(0x1199, 0x683C) }, | |
217 | { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */ | |
218 | /* Sierra Wireless MC8790, MC8791, MC8792 */ | |
219 | { USB_DEVICE(0x1199, 0x683E) }, | |
9454c46a KL |
220 | { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */ |
221 | { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */ | |
222 | { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */ | |
223 | { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */ | |
6835b32c | 224 | { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */ |
62aad3ab | 225 | { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */ |
e3173b22 KL |
226 | { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */ |
227 | { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */ | |
228 | /* Sierra Wireless C885 */ | |
229 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)}, | |
230 | /* Sierra Wireless Device */ | |
231 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)}, | |
232 | /* Sierra Wireless Device */ | |
73b2c205 KL |
233 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)}, |
234 | /* Sierra Wireless Device */ | |
e3173b22 KL |
235 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)}, |
236 | ||
237 | { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */ | |
238 | { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */ | |
112225b1 | 239 | |
4db2299d EP |
240 | { USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modems */ |
241 | .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist | |
242 | }, | |
243 | ||
033a3fb9 KL |
244 | { } |
245 | }; | |
964ee1de | 246 | MODULE_DEVICE_TABLE(usb, id_table); |
033a3fb9 | 247 | |
69de51fd | 248 | static struct usb_driver sierra_driver = { |
033a3fb9 | 249 | .name = "sierra", |
228426ed | 250 | .probe = usb_serial_probe, |
033a3fb9 KL |
251 | .disconnect = usb_serial_disconnect, |
252 | .id_table = id_table, | |
964ee1de | 253 | .no_dynamic_id = 1, |
033a3fb9 KL |
254 | }; |
255 | ||
033a3fb9 | 256 | struct sierra_port_private { |
17c23274 GKH |
257 | spinlock_t lock; /* lock the structure */ |
258 | int outstanding_urbs; /* number of out urbs in flight */ | |
259 | ||
4f4f9c53 | 260 | /* Input endpoints and buffers for this port */ |
033a3fb9 | 261 | struct urb *in_urbs[N_IN_URB]; |
033a3fb9 KL |
262 | |
263 | /* Settings for the port */ | |
264 | int rts_state; /* Handshaking pins (outputs) */ | |
265 | int dtr_state; | |
266 | int cts_state; /* Handshaking pins (inputs) */ | |
267 | int dsr_state; | |
268 | int dcd_state; | |
269 | int ri_state; | |
033a3fb9 KL |
270 | }; |
271 | ||
335f8514 | 272 | static int sierra_send_setup(struct usb_serial_port *port) |
69de51fd | 273 | { |
964ee1de GKH |
274 | struct usb_serial *serial = port->serial; |
275 | struct sierra_port_private *portdata; | |
228426ed | 276 | __u16 interface = 0; |
335f8514 | 277 | int val = 0; |
033a3fb9 | 278 | |
5d44b361 | 279 | dev_dbg(&port->dev, "%s\n", __func__); |
033a3fb9 | 280 | |
964ee1de | 281 | portdata = usb_get_serial_port_data(port); |
033a3fb9 | 282 | |
335f8514 AC |
283 | if (portdata->dtr_state) |
284 | val |= 0x01; | |
285 | if (portdata->rts_state) | |
286 | val |= 0x02; | |
287 | ||
288 | /* If composite device then properly report interface */ | |
00b040de | 289 | if (serial->num_ports == 1) { |
335f8514 | 290 | interface = sierra_calc_interface(serial); |
00b040de AC |
291 | /* Control message is sent only to interfaces with |
292 | * interrupt_in endpoints | |
293 | */ | |
294 | if (port->interrupt_in_urb) { | |
295 | /* send control message */ | |
296 | return usb_control_msg(serial->dev, | |
297 | usb_rcvctrlpipe(serial->dev, 0), | |
298 | 0x22, 0x21, val, interface, | |
299 | NULL, 0, USB_CTRL_SET_TIMEOUT); | |
300 | } | |
301 | } | |
335f8514 AC |
302 | |
303 | /* Otherwise the need to do non-composite mapping */ | |
304 | else { | |
305 | if (port->bulk_out_endpointAddress == 2) | |
306 | interface = 0; | |
307 | else if (port->bulk_out_endpointAddress == 4) | |
308 | interface = 1; | |
309 | else if (port->bulk_out_endpointAddress == 5) | |
310 | interface = 2; | |
00b040de | 311 | return usb_control_msg(serial->dev, |
335f8514 AC |
312 | usb_rcvctrlpipe(serial->dev, 0), |
313 | 0x22, 0x21, val, interface, | |
314 | NULL, 0, USB_CTRL_SET_TIMEOUT); | |
00b040de | 315 | } |
964ee1de | 316 | return 0; |
69de51fd KL |
317 | } |
318 | ||
95da310e AC |
319 | static void sierra_set_termios(struct tty_struct *tty, |
320 | struct usb_serial_port *port, struct ktermios *old_termios) | |
033a3fb9 | 321 | { |
5d44b361 | 322 | dev_dbg(&port->dev, "%s\n", __func__); |
95da310e | 323 | tty_termios_copy_hw(tty->termios, old_termios); |
335f8514 | 324 | sierra_send_setup(port); |
033a3fb9 KL |
325 | } |
326 | ||
95da310e | 327 | static int sierra_tiocmget(struct tty_struct *tty, struct file *file) |
033a3fb9 | 328 | { |
95da310e | 329 | struct usb_serial_port *port = tty->driver_data; |
033a3fb9 KL |
330 | unsigned int value; |
331 | struct sierra_port_private *portdata; | |
332 | ||
5d44b361 | 333 | dev_dbg(&port->dev, "%s\n", __func__); |
033a3fb9 KL |
334 | portdata = usb_get_serial_port_data(port); |
335 | ||
336 | value = ((portdata->rts_state) ? TIOCM_RTS : 0) | | |
337 | ((portdata->dtr_state) ? TIOCM_DTR : 0) | | |
338 | ((portdata->cts_state) ? TIOCM_CTS : 0) | | |
339 | ((portdata->dsr_state) ? TIOCM_DSR : 0) | | |
340 | ((portdata->dcd_state) ? TIOCM_CAR : 0) | | |
341 | ((portdata->ri_state) ? TIOCM_RNG : 0); | |
342 | ||
343 | return value; | |
344 | } | |
345 | ||
95da310e | 346 | static int sierra_tiocmset(struct tty_struct *tty, struct file *file, |
033a3fb9 KL |
347 | unsigned int set, unsigned int clear) |
348 | { | |
95da310e | 349 | struct usb_serial_port *port = tty->driver_data; |
033a3fb9 KL |
350 | struct sierra_port_private *portdata; |
351 | ||
352 | portdata = usb_get_serial_port_data(port); | |
353 | ||
354 | if (set & TIOCM_RTS) | |
355 | portdata->rts_state = 1; | |
356 | if (set & TIOCM_DTR) | |
357 | portdata->dtr_state = 1; | |
358 | ||
359 | if (clear & TIOCM_RTS) | |
360 | portdata->rts_state = 0; | |
361 | if (clear & TIOCM_DTR) | |
362 | portdata->dtr_state = 0; | |
335f8514 | 363 | return sierra_send_setup(port); |
033a3fb9 KL |
364 | } |
365 | ||
b9a44bc1 EP |
366 | static void sierra_release_urb(struct urb *urb) |
367 | { | |
368 | struct usb_serial_port *port; | |
369 | if (urb) { | |
370 | port = urb->context; | |
371 | dev_dbg(&port->dev, "%s: %p\n", __func__, urb); | |
372 | kfree(urb->transfer_buffer); | |
373 | usb_free_urb(urb); | |
374 | } | |
375 | } | |
376 | ||
17c23274 GKH |
377 | static void sierra_outdat_callback(struct urb *urb) |
378 | { | |
379 | struct usb_serial_port *port = urb->context; | |
380 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); | |
381 | int status = urb->status; | |
382 | unsigned long flags; | |
383 | ||
5d44b361 | 384 | dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); |
17c23274 GKH |
385 | |
386 | /* free up the transfer buffer, as usb_free_urb() does not do this */ | |
387 | kfree(urb->transfer_buffer); | |
388 | ||
389 | if (status) | |
7384a922 | 390 | dev_dbg(&port->dev, "%s - nonzero write bulk status " |
5d44b361 | 391 | "received: %d\n", __func__, status); |
17c23274 GKH |
392 | |
393 | spin_lock_irqsave(&portdata->lock, flags); | |
394 | --portdata->outstanding_urbs; | |
395 | spin_unlock_irqrestore(&portdata->lock, flags); | |
396 | ||
397 | usb_serial_port_softint(port); | |
398 | } | |
399 | ||
033a3fb9 | 400 | /* Write */ |
95da310e AC |
401 | static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port, |
402 | const unsigned char *buf, int count) | |
033a3fb9 | 403 | { |
17c23274 GKH |
404 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); |
405 | struct usb_serial *serial = port->serial; | |
406 | unsigned long flags; | |
407 | unsigned char *buffer; | |
408 | struct urb *urb; | |
40d2ff32 EP |
409 | size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER); |
410 | int retval = 0; | |
411 | ||
412 | /* verify that we actually have some data to write */ | |
413 | if (count == 0) | |
414 | return 0; | |
033a3fb9 KL |
415 | |
416 | portdata = usb_get_serial_port_data(port); | |
417 | ||
0b10395a | 418 | dev_dbg(&port->dev, "%s: write (%zd bytes)\n", __func__, writesize); |
033a3fb9 | 419 | |
17c23274 | 420 | spin_lock_irqsave(&portdata->lock, flags); |
40d2ff32 EP |
421 | dev_dbg(&port->dev, "%s - outstanding_urbs: %d\n", __func__, |
422 | portdata->outstanding_urbs); | |
17c23274 GKH |
423 | if (portdata->outstanding_urbs > N_OUT_URB) { |
424 | spin_unlock_irqrestore(&portdata->lock, flags); | |
7384a922 | 425 | dev_dbg(&port->dev, "%s - write limit hit\n", __func__); |
17c23274 GKH |
426 | return 0; |
427 | } | |
428 | portdata->outstanding_urbs++; | |
40d2ff32 EP |
429 | dev_dbg(&port->dev, "%s - 1, outstanding_urbs: %d\n", __func__, |
430 | portdata->outstanding_urbs); | |
17c23274 GKH |
431 | spin_unlock_irqrestore(&portdata->lock, flags); |
432 | ||
40d2ff32 | 433 | buffer = kmalloc(writesize, GFP_ATOMIC); |
17c23274 GKH |
434 | if (!buffer) { |
435 | dev_err(&port->dev, "out of memory\n"); | |
40d2ff32 | 436 | retval = -ENOMEM; |
17c23274 GKH |
437 | goto error_no_buffer; |
438 | } | |
033a3fb9 | 439 | |
17c23274 GKH |
440 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
441 | if (!urb) { | |
442 | dev_err(&port->dev, "no more free urbs\n"); | |
40d2ff32 | 443 | retval = -ENOMEM; |
17c23274 GKH |
444 | goto error_no_urb; |
445 | } | |
033a3fb9 | 446 | |
40d2ff32 | 447 | memcpy(buffer, buf, writesize); |
033a3fb9 | 448 | |
40d2ff32 | 449 | usb_serial_debug_data(debug, &port->dev, __func__, writesize, buffer); |
17c23274 GKH |
450 | |
451 | usb_fill_bulk_urb(urb, serial->dev, | |
452 | usb_sndbulkpipe(serial->dev, | |
453 | port->bulk_out_endpointAddress), | |
40d2ff32 | 454 | buffer, writesize, sierra_outdat_callback, port); |
17c23274 | 455 | |
238ebd13 EP |
456 | /* Handle the need to send a zero length packet */ |
457 | urb->transfer_flags |= URB_ZERO_PACKET; | |
458 | ||
17c23274 | 459 | /* send it down the pipe */ |
40d2ff32 EP |
460 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
461 | if (retval) { | |
17c23274 | 462 | dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " |
40d2ff32 | 463 | "with status = %d\n", __func__, retval); |
17c23274 | 464 | goto error; |
033a3fb9 KL |
465 | } |
466 | ||
17c23274 GKH |
467 | /* we are done with this urb, so let the host driver |
468 | * really free it when it is finished with it */ | |
469 | usb_free_urb(urb); | |
470 | ||
40d2ff32 | 471 | return writesize; |
17c23274 GKH |
472 | error: |
473 | usb_free_urb(urb); | |
474 | error_no_urb: | |
475 | kfree(buffer); | |
476 | error_no_buffer: | |
477 | spin_lock_irqsave(&portdata->lock, flags); | |
478 | --portdata->outstanding_urbs; | |
40d2ff32 EP |
479 | dev_dbg(&port->dev, "%s - 2. outstanding_urbs: %d\n", __func__, |
480 | portdata->outstanding_urbs); | |
17c23274 | 481 | spin_unlock_irqrestore(&portdata->lock, flags); |
40d2ff32 | 482 | return retval; |
033a3fb9 KL |
483 | } |
484 | ||
485 | static void sierra_indat_callback(struct urb *urb) | |
486 | { | |
487 | int err; | |
488 | int endpoint; | |
489 | struct usb_serial_port *port; | |
490 | struct tty_struct *tty; | |
491 | unsigned char *data = urb->transfer_buffer; | |
17dd2215 | 492 | int status = urb->status; |
033a3fb9 | 493 | |
033a3fb9 | 494 | endpoint = usb_pipeendpoint(urb->pipe); |
b0cda8c5 EP |
495 | port = urb->context; |
496 | ||
497 | dev_dbg(&port->dev, "%s: %p\n", __func__, urb); | |
033a3fb9 | 498 | |
17dd2215 | 499 | if (status) { |
7384a922 | 500 | dev_dbg(&port->dev, "%s: nonzero status: %d on" |
5d44b361 | 501 | " endpoint %02x\n", __func__, status, endpoint); |
033a3fb9 | 502 | } else { |
033a3fb9 | 503 | if (urb->actual_length) { |
d95186d1 | 504 | tty = tty_port_tty_get(&port->port); |
b0cda8c5 | 505 | |
033a3fb9 KL |
506 | tty_buffer_request_room(tty, urb->actual_length); |
507 | tty_insert_flip_string(tty, data, urb->actual_length); | |
508 | tty_flip_buffer_push(tty); | |
b0cda8c5 | 509 | |
4a90f09b | 510 | tty_kref_put(tty); |
b0cda8c5 EP |
511 | usb_serial_debug_data(debug, &port->dev, __func__, |
512 | urb->actual_length, data); | |
513 | } else { | |
7384a922 | 514 | dev_dbg(&port->dev, "%s: empty read urb" |
5d44b361 | 515 | " received\n", __func__); |
033a3fb9 KL |
516 | } |
517 | } | |
b0cda8c5 EP |
518 | |
519 | /* Resubmit urb so we continue receiving */ | |
520 | if (port->port.count && status != -ESHUTDOWN && status != -EPERM) { | |
521 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
522 | if (err) | |
523 | dev_err(&port->dev, "resubmit read urb failed." | |
524 | "(%d)\n", err); | |
525 | } | |
526 | ||
033a3fb9 KL |
527 | return; |
528 | } | |
529 | ||
033a3fb9 KL |
530 | static void sierra_instat_callback(struct urb *urb) |
531 | { | |
532 | int err; | |
17dd2215 | 533 | int status = urb->status; |
cdc97792 | 534 | struct usb_serial_port *port = urb->context; |
033a3fb9 KL |
535 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); |
536 | struct usb_serial *serial = port->serial; | |
537 | ||
5d44b361 | 538 | dev_dbg(&port->dev, "%s: urb %p port %p has data %p\n", __func__, |
7384a922 | 539 | urb, port, portdata); |
033a3fb9 | 540 | |
17dd2215 | 541 | if (status == 0) { |
033a3fb9 KL |
542 | struct usb_ctrlrequest *req_pkt = |
543 | (struct usb_ctrlrequest *)urb->transfer_buffer; | |
544 | ||
545 | if (!req_pkt) { | |
7384a922 KL |
546 | dev_dbg(&port->dev, "%s: NULL req_pkt\n", |
547 | __func__); | |
033a3fb9 KL |
548 | return; |
549 | } | |
550 | if ((req_pkt->bRequestType == 0xA1) && | |
551 | (req_pkt->bRequest == 0x20)) { | |
552 | int old_dcd_state; | |
553 | unsigned char signals = *((unsigned char *) | |
554 | urb->transfer_buffer + | |
555 | sizeof(struct usb_ctrlrequest)); | |
4a90f09b | 556 | struct tty_struct *tty; |
033a3fb9 | 557 | |
5d44b361 | 558 | dev_dbg(&port->dev, "%s: signal x%x\n", __func__, |
7384a922 | 559 | signals); |
033a3fb9 KL |
560 | |
561 | old_dcd_state = portdata->dcd_state; | |
562 | portdata->cts_state = 1; | |
563 | portdata->dcd_state = ((signals & 0x01) ? 1 : 0); | |
564 | portdata->dsr_state = ((signals & 0x02) ? 1 : 0); | |
565 | portdata->ri_state = ((signals & 0x08) ? 1 : 0); | |
566 | ||
4a90f09b AC |
567 | tty = tty_port_tty_get(&port->port); |
568 | if (tty && !C_CLOCAL(tty) && | |
033a3fb9 | 569 | old_dcd_state && !portdata->dcd_state) |
4a90f09b AC |
570 | tty_hangup(tty); |
571 | tty_kref_put(tty); | |
033a3fb9 | 572 | } else { |
5d44b361 | 573 | dev_dbg(&port->dev, "%s: type %x req %x\n", |
7384a922 KL |
574 | __func__, req_pkt->bRequestType, |
575 | req_pkt->bRequest); | |
033a3fb9 KL |
576 | } |
577 | } else | |
5d44b361 | 578 | dev_dbg(&port->dev, "%s: error %d\n", __func__, status); |
033a3fb9 KL |
579 | |
580 | /* Resubmit urb so we continue receiving IRQ data */ | |
c76a23da | 581 | if (port->port.count && status != -ESHUTDOWN && status != -ENOENT) { |
033a3fb9 KL |
582 | urb->dev = serial->dev; |
583 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
584 | if (err) | |
c76a23da EP |
585 | dev_err(&port->dev, "%s: resubmit intr urb " |
586 | "failed. (%d)\n", __func__, err); | |
033a3fb9 KL |
587 | } |
588 | } | |
589 | ||
95da310e | 590 | static int sierra_write_room(struct tty_struct *tty) |
033a3fb9 | 591 | { |
95da310e | 592 | struct usb_serial_port *port = tty->driver_data; |
17c23274 GKH |
593 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); |
594 | unsigned long flags; | |
033a3fb9 | 595 | |
5d44b361 | 596 | dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); |
033a3fb9 | 597 | |
17c23274 GKH |
598 | /* try to give a good number back based on if we have any free urbs at |
599 | * this point in time */ | |
600 | spin_lock_irqsave(&portdata->lock, flags); | |
601 | if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) { | |
602 | spin_unlock_irqrestore(&portdata->lock, flags); | |
7384a922 | 603 | dev_dbg(&port->dev, "%s - write limit hit\n", __func__); |
17c23274 | 604 | return 0; |
033a3fb9 | 605 | } |
17c23274 | 606 | spin_unlock_irqrestore(&portdata->lock, flags); |
033a3fb9 | 607 | |
17c23274 | 608 | return 2048; |
033a3fb9 KL |
609 | } |
610 | ||
b9a44bc1 | 611 | static void sierra_stop_rx_urbs(struct usb_serial_port *port) |
033a3fb9 | 612 | { |
9e85c5f6 | 613 | int i; |
b9a44bc1 | 614 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); |
033a3fb9 | 615 | |
b9a44bc1 EP |
616 | for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) |
617 | usb_kill_urb(portdata->in_urbs[i]); | |
033a3fb9 | 618 | |
b9a44bc1 EP |
619 | usb_kill_urb(port->interrupt_in_urb); |
620 | } | |
033a3fb9 | 621 | |
b9a44bc1 EP |
622 | static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags) |
623 | { | |
624 | int ok_cnt; | |
625 | int err = -EINVAL; | |
626 | int i; | |
627 | struct urb *urb; | |
628 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); | |
033a3fb9 | 629 | |
b9a44bc1 EP |
630 | ok_cnt = 0; |
631 | for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) { | |
033a3fb9 | 632 | urb = portdata->in_urbs[i]; |
9e85c5f6 | 633 | if (!urb) |
033a3fb9 | 634 | continue; |
b9a44bc1 EP |
635 | err = usb_submit_urb(urb, mem_flags); |
636 | if (err) { | |
637 | dev_err(&port->dev, "%s: submit urb failed: %d\n", | |
638 | __func__, err); | |
639 | } else { | |
640 | ok_cnt++; | |
033a3fb9 | 641 | } |
b9a44bc1 | 642 | } |
033a3fb9 | 643 | |
b9a44bc1 EP |
644 | if (ok_cnt && port->interrupt_in_urb) { |
645 | err = usb_submit_urb(port->interrupt_in_urb, mem_flags); | |
646 | if (err) { | |
647 | dev_err(&port->dev, "%s: submit intr urb failed: %d\n", | |
648 | __func__, err); | |
033a3fb9 KL |
649 | } |
650 | } | |
651 | ||
b9a44bc1 EP |
652 | if (ok_cnt > 0) /* at least one rx urb submitted */ |
653 | return 0; | |
654 | else | |
655 | return err; | |
656 | } | |
657 | ||
658 | static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint, | |
659 | int dir, void *ctx, int len, | |
660 | gfp_t mem_flags, | |
661 | usb_complete_t callback) | |
662 | { | |
663 | struct urb *urb; | |
664 | u8 *buf; | |
665 | ||
666 | if (endpoint == -1) | |
667 | return NULL; | |
033a3fb9 | 668 | |
b9a44bc1 EP |
669 | urb = usb_alloc_urb(0, mem_flags); |
670 | if (urb == NULL) { | |
671 | dev_dbg(&serial->dev->dev, "%s: alloc for endpoint %d failed\n", | |
672 | __func__, endpoint); | |
673 | return NULL; | |
9e85c5f6 | 674 | } |
b9a44bc1 EP |
675 | |
676 | buf = kmalloc(len, mem_flags); | |
677 | if (buf) { | |
678 | /* Fill URB using supplied data */ | |
679 | usb_fill_bulk_urb(urb, serial->dev, | |
680 | usb_sndbulkpipe(serial->dev, endpoint) | dir, | |
681 | buf, len, callback, ctx); | |
682 | ||
683 | /* debug */ | |
684 | dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__, | |
685 | dir == USB_DIR_IN ? 'i' : 'o', urb, buf); | |
686 | } else { | |
687 | dev_dbg(&serial->dev->dev, "%s %c u:%p d:%p\n", __func__, | |
688 | dir == USB_DIR_IN ? 'i' : 'o', urb, buf); | |
689 | ||
690 | sierra_release_urb(urb); | |
691 | urb = NULL; | |
692 | } | |
693 | ||
694 | return urb; | |
033a3fb9 KL |
695 | } |
696 | ||
b9a44bc1 | 697 | static void sierra_close(struct usb_serial_port *port) |
033a3fb9 | 698 | { |
b9a44bc1 | 699 | int i; |
033a3fb9 KL |
700 | struct usb_serial *serial = port->serial; |
701 | struct sierra_port_private *portdata; | |
702 | ||
b9a44bc1 | 703 | dev_dbg(&port->dev, "%s\n", __func__); |
033a3fb9 | 704 | portdata = usb_get_serial_port_data(port); |
b9a44bc1 EP |
705 | |
706 | portdata->rts_state = 0; | |
707 | portdata->dtr_state = 0; | |
033a3fb9 KL |
708 | |
709 | if (serial->dev) { | |
e33fe4d8 ON |
710 | mutex_lock(&serial->disc_mutex); |
711 | if (!serial->disconnected) | |
335f8514 | 712 | sierra_send_setup(port); |
e33fe4d8 | 713 | mutex_unlock(&serial->disc_mutex); |
b9a44bc1 EP |
714 | |
715 | /* Stop reading urbs */ | |
716 | sierra_stop_rx_urbs(port); | |
717 | /* .. and release them */ | |
718 | for (i = 0; i < N_IN_URB; i++) { | |
719 | sierra_release_urb(portdata->in_urbs[i]); | |
720 | portdata->in_urbs[i] = NULL; | |
721 | } | |
335f8514 AC |
722 | } |
723 | } | |
724 | ||
b9a44bc1 EP |
725 | static int sierra_open(struct tty_struct *tty, |
726 | struct usb_serial_port *port, struct file *filp) | |
335f8514 | 727 | { |
b9a44bc1 EP |
728 | struct sierra_port_private *portdata; |
729 | struct usb_serial *serial = port->serial; | |
335f8514 | 730 | int i; |
b9a44bc1 EP |
731 | int err; |
732 | int endpoint; | |
733 | struct urb *urb; | |
734 | ||
735 | portdata = usb_get_serial_port_data(port); | |
736 | ||
5d44b361 | 737 | dev_dbg(&port->dev, "%s\n", __func__); |
b9a44bc1 EP |
738 | |
739 | /* Set some sane defaults */ | |
740 | portdata->rts_state = 1; | |
741 | portdata->dtr_state = 1; | |
742 | ||
743 | ||
744 | endpoint = port->bulk_in_endpointAddress; | |
745 | for (i = 0; i < ARRAY_SIZE(portdata->in_urbs); i++) { | |
746 | urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port, | |
747 | IN_BUFLEN, GFP_KERNEL, | |
748 | sierra_indat_callback); | |
749 | portdata->in_urbs[i] = urb; | |
750 | } | |
751 | /* clear halt condition */ | |
752 | usb_clear_halt(serial->dev, | |
753 | usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN); | |
754 | ||
755 | err = sierra_submit_rx_urbs(port, GFP_KERNEL); | |
756 | if (err) { | |
757 | /* get rid of everything as in close */ | |
758 | sierra_close(port); | |
759 | return err; | |
760 | } | |
761 | sierra_send_setup(port); | |
762 | ||
763 | return 0; | |
764 | } | |
765 | ||
766 | ||
767 | static void sierra_dtr_rts(struct usb_serial_port *port, int on) | |
768 | { | |
335f8514 AC |
769 | struct usb_serial *serial = port->serial; |
770 | struct sierra_port_private *portdata; | |
033a3fb9 | 771 | |
335f8514 | 772 | portdata = usb_get_serial_port_data(port); |
b9a44bc1 EP |
773 | portdata->rts_state = on; |
774 | portdata->dtr_state = on; | |
335f8514 AC |
775 | |
776 | if (serial->dev) { | |
b9a44bc1 EP |
777 | mutex_lock(&serial->disc_mutex); |
778 | if (!serial->disconnected) | |
779 | sierra_send_setup(port); | |
780 | mutex_unlock(&serial->disc_mutex); | |
033a3fb9 | 781 | } |
033a3fb9 KL |
782 | } |
783 | ||
033a3fb9 KL |
784 | static int sierra_startup(struct usb_serial *serial) |
785 | { | |
033a3fb9 KL |
786 | struct usb_serial_port *port; |
787 | struct sierra_port_private *portdata; | |
9e85c5f6 | 788 | int i; |
033a3fb9 | 789 | |
5d44b361 | 790 | dev_dbg(&serial->dev->dev, "%s\n", __func__); |
033a3fb9 | 791 | |
228426ed | 792 | /* Set Device mode to D0 */ |
112225b1 KL |
793 | sierra_set_power_state(serial->dev, 0x0000); |
794 | ||
228426ed KL |
795 | /* Check NMEA and set */ |
796 | if (nmea) | |
797 | sierra_vsc_set_nmea(serial->dev, 1); | |
798 | ||
033a3fb9 KL |
799 | /* Now setup per port private data */ |
800 | for (i = 0; i < serial->num_ports; i++) { | |
801 | port = serial->port[i]; | |
802 | portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); | |
803 | if (!portdata) { | |
7384a922 | 804 | dev_dbg(&port->dev, "%s: kmalloc for " |
5d44b361 | 805 | "sierra_port_private (%d) failed!.\n", |
7384a922 | 806 | __func__, i); |
17c23274 | 807 | return -ENOMEM; |
033a3fb9 | 808 | } |
17c23274 | 809 | spin_lock_init(&portdata->lock); |
b9a44bc1 | 810 | /* Set the port private data pointer */ |
033a3fb9 | 811 | usb_set_serial_port_data(port, portdata); |
033a3fb9 KL |
812 | } |
813 | ||
17c23274 | 814 | return 0; |
033a3fb9 KL |
815 | } |
816 | ||
f9c99bb8 | 817 | static void sierra_disconnect(struct usb_serial *serial) |
033a3fb9 | 818 | { |
b9a44bc1 | 819 | int i; |
033a3fb9 KL |
820 | struct usb_serial_port *port; |
821 | struct sierra_port_private *portdata; | |
822 | ||
5d44b361 | 823 | dev_dbg(&serial->dev->dev, "%s\n", __func__); |
033a3fb9 | 824 | |
033a3fb9 KL |
825 | for (i = 0; i < serial->num_ports; ++i) { |
826 | port = serial->port[i]; | |
f094e4f3 GKH |
827 | if (!port) |
828 | continue; | |
033a3fb9 | 829 | portdata = usb_get_serial_port_data(port); |
f094e4f3 GKH |
830 | if (!portdata) |
831 | continue; | |
9e85c5f6 GKH |
832 | kfree(portdata); |
833 | usb_set_serial_port_data(port, NULL); | |
033a3fb9 KL |
834 | } |
835 | } | |
836 | ||
228426ed | 837 | static struct usb_serial_driver sierra_device = { |
964ee1de GKH |
838 | .driver = { |
839 | .owner = THIS_MODULE, | |
4e0fee82 | 840 | .name = "sierra", |
964ee1de | 841 | }, |
228426ed KL |
842 | .description = "Sierra USB modem", |
843 | .id_table = id_table, | |
d9b1b787 | 844 | .usb_driver = &sierra_driver, |
228426ed KL |
845 | .calc_num_ports = sierra_calc_num_ports, |
846 | .probe = sierra_probe, | |
964ee1de GKH |
847 | .open = sierra_open, |
848 | .close = sierra_close, | |
335f8514 | 849 | .dtr_rts = sierra_dtr_rts, |
964ee1de GKH |
850 | .write = sierra_write, |
851 | .write_room = sierra_write_room, | |
964ee1de | 852 | .set_termios = sierra_set_termios, |
964ee1de GKH |
853 | .tiocmget = sierra_tiocmget, |
854 | .tiocmset = sierra_tiocmset, | |
855 | .attach = sierra_startup, | |
f9c99bb8 | 856 | .disconnect = sierra_disconnect, |
964ee1de GKH |
857 | .read_int_callback = sierra_instat_callback, |
858 | }; | |
859 | ||
860 | /* Functions used by new usb-serial code. */ | |
861 | static int __init sierra_init(void) | |
862 | { | |
863 | int retval; | |
228426ed | 864 | retval = usb_serial_register(&sierra_device); |
964ee1de | 865 | if (retval) |
228426ed | 866 | goto failed_device_register; |
964ee1de GKH |
867 | |
868 | ||
869 | retval = usb_register(&sierra_driver); | |
870 | if (retval) | |
871 | goto failed_driver_register; | |
872 | ||
c197a8db GKH |
873 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
874 | DRIVER_DESC "\n"); | |
964ee1de GKH |
875 | |
876 | return 0; | |
877 | ||
878 | failed_driver_register: | |
228426ed KL |
879 | usb_serial_deregister(&sierra_device); |
880 | failed_device_register: | |
964ee1de GKH |
881 | return retval; |
882 | } | |
883 | ||
884 | static void __exit sierra_exit(void) | |
885 | { | |
9660ea36 | 886 | usb_deregister(&sierra_driver); |
228426ed | 887 | usb_serial_deregister(&sierra_device); |
964ee1de GKH |
888 | } |
889 | ||
890 | module_init(sierra_init); | |
891 | module_exit(sierra_exit); | |
892 | ||
033a3fb9 KL |
893 | MODULE_AUTHOR(DRIVER_AUTHOR); |
894 | MODULE_DESCRIPTION(DRIVER_DESC); | |
895 | MODULE_VERSION(DRIVER_VERSION); | |
69de51fd | 896 | MODULE_LICENSE("GPL"); |
033a3fb9 | 897 | |
4e0fee82 | 898 | module_param(nmea, bool, S_IRUGO | S_IWUSR); |
228426ed KL |
899 | MODULE_PARM_DESC(nmea, "NMEA streaming"); |
900 | ||
033a3fb9 KL |
901 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
902 | MODULE_PARM_DESC(debug, "Debug messages"); |