1 /* 2 USB Driver for Sierra Wireless 3 4 Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com> 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> 15 */ 16 17 #define DRIVER_VERSION "v.1.3.2" 18 #define DRIVER_AUTHOR "Kevin Lloyd <klloyd@sierrawireless.com>" 19 #define DRIVER_DESC "USB Driver for Sierra Wireless USB modems" 20 21 #include <linux/kernel.h> 22 #include <linux/jiffies.h> 23 #include <linux/errno.h> 24 #include <linux/tty.h> 25 #include <linux/tty_flip.h> 26 #include <linux/module.h> 27 #include <linux/usb.h> 28 #include <linux/usb/serial.h> 29 #include <linux/usb/ch9.h> 30 31 #define SWIMS_USB_REQUEST_SetPower 0x00 32 #define SWIMS_USB_REQUEST_SetNmea 0x07 33 34 /* per port private data */ 35 #define N_IN_URB 4 36 #define N_OUT_URB 4 37 #define IN_BUFLEN 4096 38 39 static int debug; 40 static int nmea; 41 42 static int sierra_set_power_state(struct usb_device *udev, __u16 swiState) 43 { 44 int result; 45 dev_dbg(&udev->dev, "%s", __func__); 46 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 47 SWIMS_USB_REQUEST_SetPower, /* __u8 request */ 48 USB_TYPE_VENDOR, /* __u8 request type */ 49 swiState, /* __u16 value */ 50 0, /* __u16 index */ 51 NULL, /* void *data */ 52 0, /* __u16 size */ 53 USB_CTRL_SET_TIMEOUT); /* int timeout */ 54 return result; 55 } 56 57 static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable) 58 { 59 int result; 60 dev_dbg(&udev->dev, "%s", __func__); 61 result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 62 SWIMS_USB_REQUEST_SetNmea, /* __u8 request */ 63 USB_TYPE_VENDOR, /* __u8 request type */ 64 enable, /* __u16 value */ 65 0x0000, /* __u16 index */ 66 NULL, /* void *data */ 67 0, /* __u16 size */ 68 USB_CTRL_SET_TIMEOUT); /* int timeout */ 69 return result; 70 } 71 72 static int sierra_calc_num_ports(struct usb_serial *serial) 73 { 74 int result; 75 int *num_ports = usb_get_serial_data(serial); 76 dev_dbg(&serial->dev->dev, "%s", __func__); 77 78 result = *num_ports; 79 80 if (result) { 81 kfree(num_ports); 82 usb_set_serial_data(serial, NULL); 83 } 84 85 return result; 86 } 87 88 static int sierra_calc_interface(struct usb_serial *serial) 89 { 90 int interface; 91 struct usb_interface *p_interface; 92 struct usb_host_interface *p_host_interface; 93 dev_dbg(&serial->dev->dev, "%s", __func__); 94 95 /* Get the interface structure pointer from the serial struct */ 96 p_interface = serial->interface; 97 98 /* Get a pointer to the host interface structure */ 99 p_host_interface = p_interface->cur_altsetting; 100 101 /* read the interface descriptor for this active altsetting 102 * to find out the interface number we are on 103 */ 104 interface = p_host_interface->desc.bInterfaceNumber; 105 106 return interface; 107 } 108 109 static int sierra_probe(struct usb_serial *serial, 110 const struct usb_device_id *id) 111 { 112 int result = 0; 113 struct usb_device *udev; 114 int *num_ports; 115 u8 ifnum; 116 u8 numendpoints; 117 118 dev_dbg(&serial->dev->dev, "%s", __func__); 119 120 num_ports = kmalloc(sizeof(*num_ports), GFP_KERNEL); 121 if (!num_ports) 122 return -ENOMEM; 123 124 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; 125 numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints; 126 udev = serial->dev; 127 128 /* Figure out the interface number from the serial structure */ 129 ifnum = sierra_calc_interface(serial); 130 131 /* 132 * If this interface supports more than 1 alternate 133 * select the 2nd one 134 */ 135 if (serial->interface->num_altsetting == 2) { 136 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n", 137 ifnum); 138 /* We know the alternate setting is 1 for the MC8785 */ 139 usb_set_interface(udev, ifnum, 1); 140 } 141 142 /* Dummy interface present on some SKUs should be ignored */ 143 if (ifnum == 0x99) 144 *num_ports = 0; 145 else if (numendpoints <= 3) 146 *num_ports = 1; 147 else 148 *num_ports = (numendpoints-1)/2; 149 150 /* 151 * save off our num_ports info so that we can use it in the 152 * calc_num_ports callback 153 */ 154 usb_set_serial_data(serial, (void *)num_ports); 155 156 return result; 157 } 158 159 static struct usb_device_id id_table [] = { 160 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */ 161 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */ 162 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */ 163 { USB_DEVICE(0x03f0, 0x1b1d) }, /* HP ev2200 a.k.a MC5720 */ 164 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */ 165 { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */ 166 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */ 167 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */ 168 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */ 169 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */ 170 /* Sierra Wireless C597 */ 171 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) }, 172 /* Sierra Wireless Device */ 173 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) }, 174 { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless Device */ 175 { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless Device */ 176 { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless Device */ 177 178 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */ 179 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */ 180 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */ 181 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */ 182 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Lenovo) */ 183 { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */ 184 { USB_DEVICE(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */ 185 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */ 186 { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */ 187 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */ 188 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */ 189 { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */ 190 { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */ 191 { USB_DEVICE(0x1199, 0x683C) }, /* Sierra Wireless MC8790 */ 192 { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8790 */ 193 { USB_DEVICE(0x1199, 0x683E) }, /* Sierra Wireless MC8790 */ 194 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */ 195 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */ 196 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */ 197 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */ 198 { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */ 199 { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */ 200 { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */ 201 { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */ 202 /* Sierra Wireless C885 */ 203 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)}, 204 /* Sierra Wireless Device */ 205 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)}, 206 /* Sierra Wireless Device */ 207 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)}, 208 /* Sierra Wireless Device */ 209 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)}, 210 211 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */ 212 { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */ 213 214 { } 215 }; 216 MODULE_DEVICE_TABLE(usb, id_table); 217 218 static struct usb_driver sierra_driver = { 219 .name = "sierra", 220 .probe = usb_serial_probe, 221 .disconnect = usb_serial_disconnect, 222 .id_table = id_table, 223 .no_dynamic_id = 1, 224 }; 225 226 struct sierra_port_private { 227 spinlock_t lock; /* lock the structure */ 228 int outstanding_urbs; /* number of out urbs in flight */ 229 230 /* Input endpoints and buffers for this port */ 231 struct urb *in_urbs[N_IN_URB]; 232 char *in_buffer[N_IN_URB]; 233 234 /* Settings for the port */ 235 int rts_state; /* Handshaking pins (outputs) */ 236 int dtr_state; 237 int cts_state; /* Handshaking pins (inputs) */ 238 int dsr_state; 239 int dcd_state; 240 int ri_state; 241 }; 242 243 static int sierra_send_setup(struct tty_struct *tty, 244 struct usb_serial_port *port) 245 { 246 struct usb_serial *serial = port->serial; 247 struct sierra_port_private *portdata; 248 __u16 interface = 0; 249 250 dev_dbg(&port->dev, "%s", __func__); 251 252 portdata = usb_get_serial_port_data(port); 253 254 if (tty) { 255 int val = 0; 256 if (portdata->dtr_state) 257 val |= 0x01; 258 if (portdata->rts_state) 259 val |= 0x02; 260 261 /* If composite device then properly report interface */ 262 if (serial->num_ports == 1) 263 interface = sierra_calc_interface(serial); 264 265 /* Otherwise the need to do non-composite mapping */ 266 else { 267 if (port->bulk_out_endpointAddress == 2) 268 interface = 0; 269 else if (port->bulk_out_endpointAddress == 4) 270 interface = 1; 271 else if (port->bulk_out_endpointAddress == 5) 272 interface = 2; 273 } 274 275 return usb_control_msg(serial->dev, 276 usb_rcvctrlpipe(serial->dev, 0), 277 0x22, 0x21, val, interface, 278 NULL, 0, USB_CTRL_SET_TIMEOUT); 279 } 280 281 return 0; 282 } 283 284 static void sierra_set_termios(struct tty_struct *tty, 285 struct usb_serial_port *port, struct ktermios *old_termios) 286 { 287 dev_dbg(&port->dev, "%s", __func__); 288 tty_termios_copy_hw(tty->termios, old_termios); 289 sierra_send_setup(tty, port); 290 } 291 292 static int sierra_tiocmget(struct tty_struct *tty, struct file *file) 293 { 294 struct usb_serial_port *port = tty->driver_data; 295 unsigned int value; 296 struct sierra_port_private *portdata; 297 298 dev_dbg(&port->dev, "%s", __func__); 299 portdata = usb_get_serial_port_data(port); 300 301 value = ((portdata->rts_state) ? TIOCM_RTS : 0) | 302 ((portdata->dtr_state) ? TIOCM_DTR : 0) | 303 ((portdata->cts_state) ? TIOCM_CTS : 0) | 304 ((portdata->dsr_state) ? TIOCM_DSR : 0) | 305 ((portdata->dcd_state) ? TIOCM_CAR : 0) | 306 ((portdata->ri_state) ? TIOCM_RNG : 0); 307 308 return value; 309 } 310 311 static int sierra_tiocmset(struct tty_struct *tty, struct file *file, 312 unsigned int set, unsigned int clear) 313 { 314 struct usb_serial_port *port = tty->driver_data; 315 struct sierra_port_private *portdata; 316 317 portdata = usb_get_serial_port_data(port); 318 319 if (set & TIOCM_RTS) 320 portdata->rts_state = 1; 321 if (set & TIOCM_DTR) 322 portdata->dtr_state = 1; 323 324 if (clear & TIOCM_RTS) 325 portdata->rts_state = 0; 326 if (clear & TIOCM_DTR) 327 portdata->dtr_state = 0; 328 return sierra_send_setup(tty, port); 329 } 330 331 static void sierra_outdat_callback(struct urb *urb) 332 { 333 struct usb_serial_port *port = urb->context; 334 struct sierra_port_private *portdata = usb_get_serial_port_data(port); 335 int status = urb->status; 336 unsigned long flags; 337 338 dev_dbg(&port->dev, "%s - port %d", __func__, port->number); 339 340 /* free up the transfer buffer, as usb_free_urb() does not do this */ 341 kfree(urb->transfer_buffer); 342 343 if (status) 344 dev_dbg(&port->dev, "%s - nonzero write bulk status " 345 "received: %d", __func__, status); 346 347 spin_lock_irqsave(&portdata->lock, flags); 348 --portdata->outstanding_urbs; 349 spin_unlock_irqrestore(&portdata->lock, flags); 350 351 usb_serial_port_softint(port); 352 } 353 354 /* Write */ 355 static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port, 356 const unsigned char *buf, int count) 357 { 358 struct sierra_port_private *portdata = usb_get_serial_port_data(port); 359 struct usb_serial *serial = port->serial; 360 unsigned long flags; 361 unsigned char *buffer; 362 struct urb *urb; 363 int status; 364 365 portdata = usb_get_serial_port_data(port); 366 367 dev_dbg(&port->dev, "%s: write (%d chars)", __func__, count); 368 369 spin_lock_irqsave(&portdata->lock, flags); 370 if (portdata->outstanding_urbs > N_OUT_URB) { 371 spin_unlock_irqrestore(&portdata->lock, flags); 372 dev_dbg(&port->dev, "%s - write limit hit\n", __func__); 373 return 0; 374 } 375 portdata->outstanding_urbs++; 376 spin_unlock_irqrestore(&portdata->lock, flags); 377 378 buffer = kmalloc(count, GFP_ATOMIC); 379 if (!buffer) { 380 dev_err(&port->dev, "out of memory\n"); 381 count = -ENOMEM; 382 goto error_no_buffer; 383 } 384 385 urb = usb_alloc_urb(0, GFP_ATOMIC); 386 if (!urb) { 387 dev_err(&port->dev, "no more free urbs\n"); 388 count = -ENOMEM; 389 goto error_no_urb; 390 } 391 392 memcpy(buffer, buf, count); 393 394 usb_serial_debug_data(debug, &port->dev, __func__, count, buffer); 395 396 usb_fill_bulk_urb(urb, serial->dev, 397 usb_sndbulkpipe(serial->dev, 398 port->bulk_out_endpointAddress), 399 buffer, count, sierra_outdat_callback, port); 400 401 /* send it down the pipe */ 402 status = usb_submit_urb(urb, GFP_ATOMIC); 403 if (status) { 404 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " 405 "with status = %d\n", __func__, status); 406 count = status; 407 goto error; 408 } 409 410 /* we are done with this urb, so let the host driver 411 * really free it when it is finished with it */ 412 usb_free_urb(urb); 413 414 return count; 415 error: 416 usb_free_urb(urb); 417 error_no_urb: 418 kfree(buffer); 419 error_no_buffer: 420 spin_lock_irqsave(&portdata->lock, flags); 421 --portdata->outstanding_urbs; 422 spin_unlock_irqrestore(&portdata->lock, flags); 423 return count; 424 } 425 426 static void sierra_indat_callback(struct urb *urb) 427 { 428 int err; 429 int endpoint; 430 struct usb_serial_port *port; 431 struct tty_struct *tty; 432 unsigned char *data = urb->transfer_buffer; 433 int status = urb->status; 434 435 dbg("%s: %p", __func__, urb); 436 437 endpoint = usb_pipeendpoint(urb->pipe); 438 port = urb->context; 439 440 if (status) { 441 dev_dbg(&port->dev, "%s: nonzero status: %d on" 442 " endpoint %02x.", __func__, status, endpoint); 443 } else { 444 if (urb->actual_length) { 445 tty = tty_port_tty_get(&port->port); 446 tty_buffer_request_room(tty, urb->actual_length); 447 tty_insert_flip_string(tty, data, urb->actual_length); 448 tty_flip_buffer_push(tty); 449 tty_kref_put(tty); 450 } else 451 dev_dbg(&port->dev, "%s: empty read urb" 452 " received", __func__); 453 454 /* Resubmit urb so we continue receiving */ 455 if (port->port.count && status != -ESHUTDOWN) { 456 err = usb_submit_urb(urb, GFP_ATOMIC); 457 if (err) 458 dev_err(&port->dev, "resubmit read urb failed." 459 "(%d)\n", err); 460 } 461 } 462 return; 463 } 464 465 static void sierra_instat_callback(struct urb *urb) 466 { 467 int err; 468 int status = urb->status; 469 struct usb_serial_port *port = urb->context; 470 struct sierra_port_private *portdata = usb_get_serial_port_data(port); 471 struct usb_serial *serial = port->serial; 472 473 dev_dbg(&port->dev, "%s", __func__); 474 dev_dbg(&port->dev, "%s: urb %p port %p has data %p", __func__, 475 urb, port, portdata); 476 477 if (status == 0) { 478 struct usb_ctrlrequest *req_pkt = 479 (struct usb_ctrlrequest *)urb->transfer_buffer; 480 481 if (!req_pkt) { 482 dev_dbg(&port->dev, "%s: NULL req_pkt\n", 483 __func__); 484 return; 485 } 486 if ((req_pkt->bRequestType == 0xA1) && 487 (req_pkt->bRequest == 0x20)) { 488 int old_dcd_state; 489 unsigned char signals = *((unsigned char *) 490 urb->transfer_buffer + 491 sizeof(struct usb_ctrlrequest)); 492 struct tty_struct *tty; 493 494 dev_dbg(&port->dev, "%s: signal x%x", __func__, 495 signals); 496 497 old_dcd_state = portdata->dcd_state; 498 portdata->cts_state = 1; 499 portdata->dcd_state = ((signals & 0x01) ? 1 : 0); 500 portdata->dsr_state = ((signals & 0x02) ? 1 : 0); 501 portdata->ri_state = ((signals & 0x08) ? 1 : 0); 502 503 tty = tty_port_tty_get(&port->port); 504 if (tty && !C_CLOCAL(tty) && 505 old_dcd_state && !portdata->dcd_state) 506 tty_hangup(tty); 507 tty_kref_put(tty); 508 } else { 509 dev_dbg(&port->dev, "%s: type %x req %x", 510 __func__, req_pkt->bRequestType, 511 req_pkt->bRequest); 512 } 513 } else 514 dev_dbg(&port->dev, "%s: error %d", __func__, status); 515 516 /* Resubmit urb so we continue receiving IRQ data */ 517 if (status != -ESHUTDOWN) { 518 urb->dev = serial->dev; 519 err = usb_submit_urb(urb, GFP_ATOMIC); 520 if (err) 521 dev_dbg(&port->dev, "%s: resubmit intr urb " 522 "failed. (%d)", __func__, err); 523 } 524 } 525 526 static int sierra_write_room(struct tty_struct *tty) 527 { 528 struct usb_serial_port *port = tty->driver_data; 529 struct sierra_port_private *portdata = usb_get_serial_port_data(port); 530 unsigned long flags; 531 532 dev_dbg(&port->dev, "%s - port %d", __func__, port->number); 533 534 /* try to give a good number back based on if we have any free urbs at 535 * this point in time */ 536 spin_lock_irqsave(&portdata->lock, flags); 537 if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) { 538 spin_unlock_irqrestore(&portdata->lock, flags); 539 dev_dbg(&port->dev, "%s - write limit hit\n", __func__); 540 return 0; 541 } 542 spin_unlock_irqrestore(&portdata->lock, flags); 543 544 return 2048; 545 } 546 547 static int sierra_open(struct tty_struct *tty, 548 struct usb_serial_port *port, struct file *filp) 549 { 550 struct sierra_port_private *portdata; 551 struct usb_serial *serial = port->serial; 552 int i; 553 struct urb *urb; 554 int result; 555 556 portdata = usb_get_serial_port_data(port); 557 558 dev_dbg(&port->dev, "%s", __func__); 559 560 /* Set some sane defaults */ 561 portdata->rts_state = 1; 562 portdata->dtr_state = 1; 563 564 /* Reset low level data toggle and start reading from endpoints */ 565 for (i = 0; i < N_IN_URB; i++) { 566 urb = portdata->in_urbs[i]; 567 if (!urb) 568 continue; 569 if (urb->dev != serial->dev) { 570 dev_dbg(&port->dev, "%s: dev %p != %p", 571 __func__, urb->dev, serial->dev); 572 continue; 573 } 574 575 /* 576 * make sure endpoint data toggle is synchronized with the 577 * device 578 */ 579 usb_clear_halt(urb->dev, urb->pipe); 580 581 result = usb_submit_urb(urb, GFP_KERNEL); 582 if (result) { 583 dev_err(&port->dev, "submit urb %d failed (%d) %d\n", 584 i, result, urb->transfer_buffer_length); 585 } 586 } 587 588 if (tty) 589 tty->low_latency = 1; 590 591 sierra_send_setup(tty, port); 592 593 /* start up the interrupt endpoint if we have one */ 594 if (port->interrupt_in_urb) { 595 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); 596 if (result) 597 dev_err(&port->dev, "submit irq_in urb failed %d\n", 598 result); 599 } 600 return 0; 601 } 602 603 static void sierra_close(struct tty_struct *tty, 604 struct usb_serial_port *port, struct file *filp) 605 { 606 int i; 607 struct usb_serial *serial = port->serial; 608 struct sierra_port_private *portdata; 609 610 dev_dbg(&port->dev, "%s", __func__); 611 portdata = usb_get_serial_port_data(port); 612 613 portdata->rts_state = 0; 614 portdata->dtr_state = 0; 615 616 if (serial->dev) { 617 mutex_lock(&serial->disc_mutex); 618 if (!serial->disconnected) 619 sierra_send_setup(tty, port); 620 mutex_unlock(&serial->disc_mutex); 621 622 /* Stop reading/writing urbs */ 623 for (i = 0; i < N_IN_URB; i++) 624 usb_kill_urb(portdata->in_urbs[i]); 625 } 626 627 usb_kill_urb(port->interrupt_in_urb); 628 tty_port_tty_set(&port->port, NULL); 629 } 630 631 static int sierra_startup(struct usb_serial *serial) 632 { 633 struct usb_serial_port *port; 634 struct sierra_port_private *portdata; 635 struct urb *urb; 636 int i; 637 int j; 638 639 dev_dbg(&serial->dev->dev, "%s", __func__); 640 641 /* Set Device mode to D0 */ 642 sierra_set_power_state(serial->dev, 0x0000); 643 644 /* Check NMEA and set */ 645 if (nmea) 646 sierra_vsc_set_nmea(serial->dev, 1); 647 648 /* Now setup per port private data */ 649 for (i = 0; i < serial->num_ports; i++) { 650 port = serial->port[i]; 651 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); 652 if (!portdata) { 653 dev_dbg(&port->dev, "%s: kmalloc for " 654 "sierra_port_private (%d) failed!.", 655 __func__, i); 656 return -ENOMEM; 657 } 658 spin_lock_init(&portdata->lock); 659 for (j = 0; j < N_IN_URB; j++) { 660 portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL); 661 if (!portdata->in_buffer[j]) { 662 for (--j; j >= 0; j--) 663 kfree(portdata->in_buffer[j]); 664 kfree(portdata); 665 return -ENOMEM; 666 } 667 } 668 669 usb_set_serial_port_data(port, portdata); 670 671 /* initialize the in urbs */ 672 for (j = 0; j < N_IN_URB; ++j) { 673 urb = usb_alloc_urb(0, GFP_KERNEL); 674 if (urb == NULL) { 675 dev_dbg(&port->dev, "%s: alloc for in " 676 "port failed.", __func__); 677 continue; 678 } 679 /* Fill URB using supplied data. */ 680 usb_fill_bulk_urb(urb, serial->dev, 681 usb_rcvbulkpipe(serial->dev, 682 port->bulk_in_endpointAddress), 683 portdata->in_buffer[j], IN_BUFLEN, 684 sierra_indat_callback, port); 685 portdata->in_urbs[j] = urb; 686 } 687 } 688 689 return 0; 690 } 691 692 static void sierra_shutdown(struct usb_serial *serial) 693 { 694 int i, j; 695 struct usb_serial_port *port; 696 struct sierra_port_private *portdata; 697 698 dev_dbg(&serial->dev->dev, "%s", __func__); 699 700 for (i = 0; i < serial->num_ports; ++i) { 701 port = serial->port[i]; 702 if (!port) 703 continue; 704 portdata = usb_get_serial_port_data(port); 705 if (!portdata) 706 continue; 707 708 for (j = 0; j < N_IN_URB; j++) { 709 usb_kill_urb(portdata->in_urbs[j]); 710 usb_free_urb(portdata->in_urbs[j]); 711 kfree(portdata->in_buffer[j]); 712 } 713 kfree(portdata); 714 usb_set_serial_port_data(port, NULL); 715 } 716 } 717 718 static struct usb_serial_driver sierra_device = { 719 .driver = { 720 .owner = THIS_MODULE, 721 .name = "sierra", 722 }, 723 .description = "Sierra USB modem", 724 .id_table = id_table, 725 .usb_driver = &sierra_driver, 726 .calc_num_ports = sierra_calc_num_ports, 727 .probe = sierra_probe, 728 .open = sierra_open, 729 .close = sierra_close, 730 .write = sierra_write, 731 .write_room = sierra_write_room, 732 .set_termios = sierra_set_termios, 733 .tiocmget = sierra_tiocmget, 734 .tiocmset = sierra_tiocmset, 735 .attach = sierra_startup, 736 .shutdown = sierra_shutdown, 737 .read_int_callback = sierra_instat_callback, 738 }; 739 740 /* Functions used by new usb-serial code. */ 741 static int __init sierra_init(void) 742 { 743 int retval; 744 retval = usb_serial_register(&sierra_device); 745 if (retval) 746 goto failed_device_register; 747 748 749 retval = usb_register(&sierra_driver); 750 if (retval) 751 goto failed_driver_register; 752 753 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 754 DRIVER_DESC "\n"); 755 756 return 0; 757 758 failed_driver_register: 759 usb_serial_deregister(&sierra_device); 760 failed_device_register: 761 return retval; 762 } 763 764 static void __exit sierra_exit(void) 765 { 766 usb_deregister(&sierra_driver); 767 usb_serial_deregister(&sierra_device); 768 } 769 770 module_init(sierra_init); 771 module_exit(sierra_exit); 772 773 MODULE_AUTHOR(DRIVER_AUTHOR); 774 MODULE_DESCRIPTION(DRIVER_DESC); 775 MODULE_VERSION(DRIVER_VERSION); 776 MODULE_LICENSE("GPL"); 777 778 module_param(nmea, bool, S_IRUGO | S_IWUSR); 779 MODULE_PARM_DESC(nmea, "NMEA streaming"); 780 781 module_param(debug, bool, S_IRUGO | S_IWUSR); 782 MODULE_PARM_DESC(debug, "Debug messages"); 783