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.1.3.3" 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 /* Control message is sent only to interfaces with 266 * interrupt_in endpoints 267 */ 268 if (port->interrupt_in_urb) { 269 /* send control message */ 270 return usb_control_msg(serial->dev, 271 usb_rcvctrlpipe(serial->dev, 0), 272 0x22, 0x21, val, interface, 273 NULL, 0, USB_CTRL_SET_TIMEOUT); 274 } 275 } 276 277 /* Otherwise the need to do non-composite mapping */ 278 else { 279 if (port->bulk_out_endpointAddress == 2) 280 interface = 0; 281 else if (port->bulk_out_endpointAddress == 4) 282 interface = 1; 283 else if (port->bulk_out_endpointAddress == 5) 284 interface = 2; 285 286 return usb_control_msg(serial->dev, 287 usb_rcvctrlpipe(serial->dev, 0), 288 0x22, 0x21, val, interface, 289 NULL, 0, USB_CTRL_SET_TIMEOUT); 290 291 } 292 } 293 294 return 0; 295 } 296 297 static void sierra_set_termios(struct tty_struct *tty, 298 struct usb_serial_port *port, struct ktermios *old_termios) 299 { 300 dev_dbg(&port->dev, "%s", __func__); 301 tty_termios_copy_hw(tty->termios, old_termios); 302 sierra_send_setup(tty, port); 303 } 304 305 static int sierra_tiocmget(struct tty_struct *tty, struct file *file) 306 { 307 struct usb_serial_port *port = tty->driver_data; 308 unsigned int value; 309 struct sierra_port_private *portdata; 310 311 dev_dbg(&port->dev, "%s", __func__); 312 portdata = usb_get_serial_port_data(port); 313 314 value = ((portdata->rts_state) ? TIOCM_RTS : 0) | 315 ((portdata->dtr_state) ? TIOCM_DTR : 0) | 316 ((portdata->cts_state) ? TIOCM_CTS : 0) | 317 ((portdata->dsr_state) ? TIOCM_DSR : 0) | 318 ((portdata->dcd_state) ? TIOCM_CAR : 0) | 319 ((portdata->ri_state) ? TIOCM_RNG : 0); 320 321 return value; 322 } 323 324 static int sierra_tiocmset(struct tty_struct *tty, struct file *file, 325 unsigned int set, unsigned int clear) 326 { 327 struct usb_serial_port *port = tty->driver_data; 328 struct sierra_port_private *portdata; 329 330 portdata = usb_get_serial_port_data(port); 331 332 if (set & TIOCM_RTS) 333 portdata->rts_state = 1; 334 if (set & TIOCM_DTR) 335 portdata->dtr_state = 1; 336 337 if (clear & TIOCM_RTS) 338 portdata->rts_state = 0; 339 if (clear & TIOCM_DTR) 340 portdata->dtr_state = 0; 341 return sierra_send_setup(tty, port); 342 } 343 344 static void sierra_outdat_callback(struct urb *urb) 345 { 346 struct usb_serial_port *port = urb->context; 347 struct sierra_port_private *portdata = usb_get_serial_port_data(port); 348 int status = urb->status; 349 unsigned long flags; 350 351 dev_dbg(&port->dev, "%s - port %d", __func__, port->number); 352 353 /* free up the transfer buffer, as usb_free_urb() does not do this */ 354 kfree(urb->transfer_buffer); 355 356 if (status) 357 dev_dbg(&port->dev, "%s - nonzero write bulk status " 358 "received: %d", __func__, status); 359 360 spin_lock_irqsave(&portdata->lock, flags); 361 --portdata->outstanding_urbs; 362 spin_unlock_irqrestore(&portdata->lock, flags); 363 364 usb_serial_port_softint(port); 365 } 366 367 /* Write */ 368 static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port, 369 const unsigned char *buf, int count) 370 { 371 struct sierra_port_private *portdata = usb_get_serial_port_data(port); 372 struct usb_serial *serial = port->serial; 373 unsigned long flags; 374 unsigned char *buffer; 375 struct urb *urb; 376 int status; 377 378 portdata = usb_get_serial_port_data(port); 379 380 dev_dbg(&port->dev, "%s: write (%d chars)", __func__, count); 381 382 spin_lock_irqsave(&portdata->lock, flags); 383 if (portdata->outstanding_urbs > N_OUT_URB) { 384 spin_unlock_irqrestore(&portdata->lock, flags); 385 dev_dbg(&port->dev, "%s - write limit hit\n", __func__); 386 return 0; 387 } 388 portdata->outstanding_urbs++; 389 spin_unlock_irqrestore(&portdata->lock, flags); 390 391 buffer = kmalloc(count, GFP_ATOMIC); 392 if (!buffer) { 393 dev_err(&port->dev, "out of memory\n"); 394 count = -ENOMEM; 395 goto error_no_buffer; 396 } 397 398 urb = usb_alloc_urb(0, GFP_ATOMIC); 399 if (!urb) { 400 dev_err(&port->dev, "no more free urbs\n"); 401 count = -ENOMEM; 402 goto error_no_urb; 403 } 404 405 memcpy(buffer, buf, count); 406 407 usb_serial_debug_data(debug, &port->dev, __func__, count, buffer); 408 409 usb_fill_bulk_urb(urb, serial->dev, 410 usb_sndbulkpipe(serial->dev, 411 port->bulk_out_endpointAddress), 412 buffer, count, sierra_outdat_callback, port); 413 414 /* send it down the pipe */ 415 status = usb_submit_urb(urb, GFP_ATOMIC); 416 if (status) { 417 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " 418 "with status = %d\n", __func__, status); 419 count = status; 420 goto error; 421 } 422 423 /* we are done with this urb, so let the host driver 424 * really free it when it is finished with it */ 425 usb_free_urb(urb); 426 427 return count; 428 error: 429 usb_free_urb(urb); 430 error_no_urb: 431 kfree(buffer); 432 error_no_buffer: 433 spin_lock_irqsave(&portdata->lock, flags); 434 --portdata->outstanding_urbs; 435 spin_unlock_irqrestore(&portdata->lock, flags); 436 return count; 437 } 438 439 static void sierra_indat_callback(struct urb *urb) 440 { 441 int err; 442 int endpoint; 443 struct usb_serial_port *port; 444 struct tty_struct *tty; 445 unsigned char *data = urb->transfer_buffer; 446 int status = urb->status; 447 448 dbg("%s: %p", __func__, urb); 449 450 endpoint = usb_pipeendpoint(urb->pipe); 451 port = urb->context; 452 453 if (status) { 454 dev_dbg(&port->dev, "%s: nonzero status: %d on" 455 " endpoint %02x.", __func__, status, endpoint); 456 } else { 457 if (urb->actual_length) { 458 tty = tty_port_tty_get(&port->port); 459 tty_buffer_request_room(tty, urb->actual_length); 460 tty_insert_flip_string(tty, data, urb->actual_length); 461 tty_flip_buffer_push(tty); 462 tty_kref_put(tty); 463 } else 464 dev_dbg(&port->dev, "%s: empty read urb" 465 " received", __func__); 466 467 /* Resubmit urb so we continue receiving */ 468 if (port->port.count && status != -ESHUTDOWN) { 469 err = usb_submit_urb(urb, GFP_ATOMIC); 470 if (err) 471 dev_err(&port->dev, "resubmit read urb failed." 472 "(%d)\n", err); 473 } 474 } 475 return; 476 } 477 478 static void sierra_instat_callback(struct urb *urb) 479 { 480 int err; 481 int status = urb->status; 482 struct usb_serial_port *port = urb->context; 483 struct sierra_port_private *portdata = usb_get_serial_port_data(port); 484 struct usb_serial *serial = port->serial; 485 486 dev_dbg(&port->dev, "%s", __func__); 487 dev_dbg(&port->dev, "%s: urb %p port %p has data %p", __func__, 488 urb, port, portdata); 489 490 if (status == 0) { 491 struct usb_ctrlrequest *req_pkt = 492 (struct usb_ctrlrequest *)urb->transfer_buffer; 493 494 if (!req_pkt) { 495 dev_dbg(&port->dev, "%s: NULL req_pkt\n", 496 __func__); 497 return; 498 } 499 if ((req_pkt->bRequestType == 0xA1) && 500 (req_pkt->bRequest == 0x20)) { 501 int old_dcd_state; 502 unsigned char signals = *((unsigned char *) 503 urb->transfer_buffer + 504 sizeof(struct usb_ctrlrequest)); 505 struct tty_struct *tty; 506 507 dev_dbg(&port->dev, "%s: signal x%x", __func__, 508 signals); 509 510 old_dcd_state = portdata->dcd_state; 511 portdata->cts_state = 1; 512 portdata->dcd_state = ((signals & 0x01) ? 1 : 0); 513 portdata->dsr_state = ((signals & 0x02) ? 1 : 0); 514 portdata->ri_state = ((signals & 0x08) ? 1 : 0); 515 516 tty = tty_port_tty_get(&port->port); 517 if (tty && !C_CLOCAL(tty) && 518 old_dcd_state && !portdata->dcd_state) 519 tty_hangup(tty); 520 tty_kref_put(tty); 521 } else { 522 dev_dbg(&port->dev, "%s: type %x req %x", 523 __func__, req_pkt->bRequestType, 524 req_pkt->bRequest); 525 } 526 } else 527 dev_dbg(&port->dev, "%s: error %d", __func__, status); 528 529 /* Resubmit urb so we continue receiving IRQ data */ 530 if (status != -ESHUTDOWN) { 531 urb->dev = serial->dev; 532 err = usb_submit_urb(urb, GFP_ATOMIC); 533 if (err) 534 dev_dbg(&port->dev, "%s: resubmit intr urb " 535 "failed. (%d)", __func__, err); 536 } 537 } 538 539 static int sierra_write_room(struct tty_struct *tty) 540 { 541 struct usb_serial_port *port = tty->driver_data; 542 struct sierra_port_private *portdata = usb_get_serial_port_data(port); 543 unsigned long flags; 544 545 dev_dbg(&port->dev, "%s - port %d", __func__, port->number); 546 547 /* try to give a good number back based on if we have any free urbs at 548 * this point in time */ 549 spin_lock_irqsave(&portdata->lock, flags); 550 if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) { 551 spin_unlock_irqrestore(&portdata->lock, flags); 552 dev_dbg(&port->dev, "%s - write limit hit\n", __func__); 553 return 0; 554 } 555 spin_unlock_irqrestore(&portdata->lock, flags); 556 557 return 2048; 558 } 559 560 static int sierra_open(struct tty_struct *tty, 561 struct usb_serial_port *port, struct file *filp) 562 { 563 struct sierra_port_private *portdata; 564 struct usb_serial *serial = port->serial; 565 int i; 566 struct urb *urb; 567 int result; 568 569 portdata = usb_get_serial_port_data(port); 570 571 dev_dbg(&port->dev, "%s", __func__); 572 573 /* Set some sane defaults */ 574 portdata->rts_state = 1; 575 portdata->dtr_state = 1; 576 577 /* Reset low level data toggle and start reading from endpoints */ 578 for (i = 0; i < N_IN_URB; i++) { 579 urb = portdata->in_urbs[i]; 580 if (!urb) 581 continue; 582 if (urb->dev != serial->dev) { 583 dev_dbg(&port->dev, "%s: dev %p != %p", 584 __func__, urb->dev, serial->dev); 585 continue; 586 } 587 588 /* 589 * make sure endpoint data toggle is synchronized with the 590 * device 591 */ 592 usb_clear_halt(urb->dev, urb->pipe); 593 594 result = usb_submit_urb(urb, GFP_KERNEL); 595 if (result) { 596 dev_err(&port->dev, "submit urb %d failed (%d) %d\n", 597 i, result, urb->transfer_buffer_length); 598 } 599 } 600 601 sierra_send_setup(tty, port); 602 603 /* start up the interrupt endpoint if we have one */ 604 if (port->interrupt_in_urb) { 605 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); 606 if (result) 607 dev_err(&port->dev, "submit irq_in urb failed %d\n", 608 result); 609 } 610 return 0; 611 } 612 613 static void sierra_close(struct tty_struct *tty, 614 struct usb_serial_port *port, struct file *filp) 615 { 616 int i; 617 struct usb_serial *serial = port->serial; 618 struct sierra_port_private *portdata; 619 620 dev_dbg(&port->dev, "%s", __func__); 621 portdata = usb_get_serial_port_data(port); 622 623 portdata->rts_state = 0; 624 portdata->dtr_state = 0; 625 626 if (serial->dev) { 627 mutex_lock(&serial->disc_mutex); 628 if (!serial->disconnected) 629 sierra_send_setup(tty, port); 630 mutex_unlock(&serial->disc_mutex); 631 632 /* Stop reading/writing urbs */ 633 for (i = 0; i < N_IN_URB; i++) 634 usb_kill_urb(portdata->in_urbs[i]); 635 } 636 637 usb_kill_urb(port->interrupt_in_urb); 638 tty_port_tty_set(&port->port, NULL); 639 } 640 641 static int sierra_startup(struct usb_serial *serial) 642 { 643 struct usb_serial_port *port; 644 struct sierra_port_private *portdata; 645 struct urb *urb; 646 int i; 647 int j; 648 649 dev_dbg(&serial->dev->dev, "%s", __func__); 650 651 /* Set Device mode to D0 */ 652 sierra_set_power_state(serial->dev, 0x0000); 653 654 /* Check NMEA and set */ 655 if (nmea) 656 sierra_vsc_set_nmea(serial->dev, 1); 657 658 /* Now setup per port private data */ 659 for (i = 0; i < serial->num_ports; i++) { 660 port = serial->port[i]; 661 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); 662 if (!portdata) { 663 dev_dbg(&port->dev, "%s: kmalloc for " 664 "sierra_port_private (%d) failed!.", 665 __func__, i); 666 return -ENOMEM; 667 } 668 spin_lock_init(&portdata->lock); 669 for (j = 0; j < N_IN_URB; j++) { 670 portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL); 671 if (!portdata->in_buffer[j]) { 672 for (--j; j >= 0; j--) 673 kfree(portdata->in_buffer[j]); 674 kfree(portdata); 675 return -ENOMEM; 676 } 677 } 678 679 usb_set_serial_port_data(port, portdata); 680 681 /* initialize the in urbs */ 682 for (j = 0; j < N_IN_URB; ++j) { 683 urb = usb_alloc_urb(0, GFP_KERNEL); 684 if (urb == NULL) { 685 dev_dbg(&port->dev, "%s: alloc for in " 686 "port failed.", __func__); 687 continue; 688 } 689 /* Fill URB using supplied data. */ 690 usb_fill_bulk_urb(urb, serial->dev, 691 usb_rcvbulkpipe(serial->dev, 692 port->bulk_in_endpointAddress), 693 portdata->in_buffer[j], IN_BUFLEN, 694 sierra_indat_callback, port); 695 portdata->in_urbs[j] = urb; 696 } 697 } 698 699 return 0; 700 } 701 702 static void sierra_shutdown(struct usb_serial *serial) 703 { 704 int i, j; 705 struct usb_serial_port *port; 706 struct sierra_port_private *portdata; 707 708 dev_dbg(&serial->dev->dev, "%s", __func__); 709 710 for (i = 0; i < serial->num_ports; ++i) { 711 port = serial->port[i]; 712 if (!port) 713 continue; 714 portdata = usb_get_serial_port_data(port); 715 if (!portdata) 716 continue; 717 718 for (j = 0; j < N_IN_URB; j++) { 719 usb_kill_urb(portdata->in_urbs[j]); 720 usb_free_urb(portdata->in_urbs[j]); 721 kfree(portdata->in_buffer[j]); 722 } 723 kfree(portdata); 724 usb_set_serial_port_data(port, NULL); 725 } 726 } 727 728 static struct usb_serial_driver sierra_device = { 729 .driver = { 730 .owner = THIS_MODULE, 731 .name = "sierra", 732 }, 733 .description = "Sierra USB modem", 734 .id_table = id_table, 735 .usb_driver = &sierra_driver, 736 .calc_num_ports = sierra_calc_num_ports, 737 .probe = sierra_probe, 738 .open = sierra_open, 739 .close = sierra_close, 740 .write = sierra_write, 741 .write_room = sierra_write_room, 742 .set_termios = sierra_set_termios, 743 .tiocmget = sierra_tiocmget, 744 .tiocmset = sierra_tiocmset, 745 .attach = sierra_startup, 746 .shutdown = sierra_shutdown, 747 .read_int_callback = sierra_instat_callback, 748 }; 749 750 /* Functions used by new usb-serial code. */ 751 static int __init sierra_init(void) 752 { 753 int retval; 754 retval = usb_serial_register(&sierra_device); 755 if (retval) 756 goto failed_device_register; 757 758 759 retval = usb_register(&sierra_driver); 760 if (retval) 761 goto failed_driver_register; 762 763 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 764 DRIVER_DESC "\n"); 765 766 return 0; 767 768 failed_driver_register: 769 usb_serial_deregister(&sierra_device); 770 failed_device_register: 771 return retval; 772 } 773 774 static void __exit sierra_exit(void) 775 { 776 usb_deregister(&sierra_driver); 777 usb_serial_deregister(&sierra_device); 778 } 779 780 module_init(sierra_init); 781 module_exit(sierra_exit); 782 783 MODULE_AUTHOR(DRIVER_AUTHOR); 784 MODULE_DESCRIPTION(DRIVER_DESC); 785 MODULE_VERSION(DRIVER_VERSION); 786 MODULE_LICENSE("GPL"); 787 788 module_param(nmea, bool, S_IRUGO | S_IWUSR); 789 MODULE_PARM_DESC(nmea, "NMEA streaming"); 790 791 module_param(debug, bool, S_IRUGO | S_IWUSR); 792 MODULE_PARM_DESC(debug, "Debug messages"); 793