| 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, 0x683B) }, /* Sierra Wireless MC8785 Composite */ |
| 190 | { USB_DEVICE(0x1199, 0x683C) }, /* Sierra Wireless MC8790 */ |
| 191 | { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8790 */ |
| 192 | { USB_DEVICE(0x1199, 0x683E) }, /* Sierra Wireless MC8790 */ |
| 193 | { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */ |
| 194 | { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */ |
| 195 | { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */ |
| 196 | { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */ |
| 197 | { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */ |
| 198 | { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */ |
| 199 | { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */ |
| 200 | { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */ |
| 201 | /* Sierra Wireless C885 */ |
| 202 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)}, |
| 203 | /* Sierra Wireless Device */ |
| 204 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)}, |
| 205 | /* Sierra Wireless Device */ |
| 206 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)}, |
| 207 | /* Sierra Wireless Device */ |
| 208 | { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)}, |
| 209 | |
| 210 | { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */ |
| 211 | { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */ |
| 212 | |
| 213 | { } |
| 214 | }; |
| 215 | MODULE_DEVICE_TABLE(usb, id_table); |
| 216 | |
| 217 | static struct usb_driver sierra_driver = { |
| 218 | .name = "sierra", |
| 219 | .probe = usb_serial_probe, |
| 220 | .disconnect = usb_serial_disconnect, |
| 221 | .id_table = id_table, |
| 222 | .no_dynamic_id = 1, |
| 223 | }; |
| 224 | |
| 225 | struct sierra_port_private { |
| 226 | spinlock_t lock; /* lock the structure */ |
| 227 | int outstanding_urbs; /* number of out urbs in flight */ |
| 228 | |
| 229 | /* Input endpoints and buffers for this port */ |
| 230 | struct urb *in_urbs[N_IN_URB]; |
| 231 | char *in_buffer[N_IN_URB]; |
| 232 | |
| 233 | /* Settings for the port */ |
| 234 | int rts_state; /* Handshaking pins (outputs) */ |
| 235 | int dtr_state; |
| 236 | int cts_state; /* Handshaking pins (inputs) */ |
| 237 | int dsr_state; |
| 238 | int dcd_state; |
| 239 | int ri_state; |
| 240 | }; |
| 241 | |
| 242 | static int sierra_send_setup(struct tty_struct *tty, |
| 243 | struct usb_serial_port *port) |
| 244 | { |
| 245 | struct usb_serial *serial = port->serial; |
| 246 | struct sierra_port_private *portdata; |
| 247 | __u16 interface = 0; |
| 248 | |
| 249 | dbg("%s", __func__); |
| 250 | |
| 251 | portdata = usb_get_serial_port_data(port); |
| 252 | |
| 253 | if (tty) { |
| 254 | int val = 0; |
| 255 | if (portdata->dtr_state) |
| 256 | val |= 0x01; |
| 257 | if (portdata->rts_state) |
| 258 | val |= 0x02; |
| 259 | |
| 260 | /* If composite device then properly report interface */ |
| 261 | if (serial->num_ports == 1) |
| 262 | interface = sierra_calc_interface(serial); |
| 263 | |
| 264 | /* Otherwise the need to do non-composite mapping */ |
| 265 | else { |
| 266 | if (port->bulk_out_endpointAddress == 2) |
| 267 | interface = 0; |
| 268 | else if (port->bulk_out_endpointAddress == 4) |
| 269 | interface = 1; |
| 270 | else if (port->bulk_out_endpointAddress == 5) |
| 271 | interface = 2; |
| 272 | } |
| 273 | |
| 274 | return usb_control_msg(serial->dev, |
| 275 | usb_rcvctrlpipe(serial->dev, 0), |
| 276 | 0x22, 0x21, val, interface, |
| 277 | NULL, 0, USB_CTRL_SET_TIMEOUT); |
| 278 | } |
| 279 | |
| 280 | return 0; |
| 281 | } |
| 282 | |
| 283 | static void sierra_set_termios(struct tty_struct *tty, |
| 284 | struct usb_serial_port *port, struct ktermios *old_termios) |
| 285 | { |
| 286 | dbg("%s", __func__); |
| 287 | tty_termios_copy_hw(tty->termios, old_termios); |
| 288 | sierra_send_setup(tty, port); |
| 289 | } |
| 290 | |
| 291 | static int sierra_tiocmget(struct tty_struct *tty, struct file *file) |
| 292 | { |
| 293 | struct usb_serial_port *port = tty->driver_data; |
| 294 | unsigned int value; |
| 295 | struct sierra_port_private *portdata; |
| 296 | |
| 297 | portdata = usb_get_serial_port_data(port); |
| 298 | |
| 299 | value = ((portdata->rts_state) ? TIOCM_RTS : 0) | |
| 300 | ((portdata->dtr_state) ? TIOCM_DTR : 0) | |
| 301 | ((portdata->cts_state) ? TIOCM_CTS : 0) | |
| 302 | ((portdata->dsr_state) ? TIOCM_DSR : 0) | |
| 303 | ((portdata->dcd_state) ? TIOCM_CAR : 0) | |
| 304 | ((portdata->ri_state) ? TIOCM_RNG : 0); |
| 305 | |
| 306 | return value; |
| 307 | } |
| 308 | |
| 309 | static int sierra_tiocmset(struct tty_struct *tty, struct file *file, |
| 310 | unsigned int set, unsigned int clear) |
| 311 | { |
| 312 | struct usb_serial_port *port = tty->driver_data; |
| 313 | struct sierra_port_private *portdata; |
| 314 | |
| 315 | portdata = usb_get_serial_port_data(port); |
| 316 | |
| 317 | if (set & TIOCM_RTS) |
| 318 | portdata->rts_state = 1; |
| 319 | if (set & TIOCM_DTR) |
| 320 | portdata->dtr_state = 1; |
| 321 | |
| 322 | if (clear & TIOCM_RTS) |
| 323 | portdata->rts_state = 0; |
| 324 | if (clear & TIOCM_DTR) |
| 325 | portdata->dtr_state = 0; |
| 326 | return sierra_send_setup(tty, port); |
| 327 | } |
| 328 | |
| 329 | static void sierra_outdat_callback(struct urb *urb) |
| 330 | { |
| 331 | struct usb_serial_port *port = urb->context; |
| 332 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); |
| 333 | int status = urb->status; |
| 334 | unsigned long flags; |
| 335 | |
| 336 | dbg("%s - port %d", __func__, port->number); |
| 337 | |
| 338 | /* free up the transfer buffer, as usb_free_urb() does not do this */ |
| 339 | kfree(urb->transfer_buffer); |
| 340 | |
| 341 | if (status) |
| 342 | dbg("%s - nonzero write bulk status received: %d", |
| 343 | __func__, status); |
| 344 | |
| 345 | spin_lock_irqsave(&portdata->lock, flags); |
| 346 | --portdata->outstanding_urbs; |
| 347 | spin_unlock_irqrestore(&portdata->lock, flags); |
| 348 | |
| 349 | usb_serial_port_softint(port); |
| 350 | } |
| 351 | |
| 352 | /* Write */ |
| 353 | static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port, |
| 354 | const unsigned char *buf, int count) |
| 355 | { |
| 356 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); |
| 357 | struct usb_serial *serial = port->serial; |
| 358 | unsigned long flags; |
| 359 | unsigned char *buffer; |
| 360 | struct urb *urb; |
| 361 | int status; |
| 362 | |
| 363 | portdata = usb_get_serial_port_data(port); |
| 364 | |
| 365 | dbg("%s: write (%d chars)", __func__, count); |
| 366 | |
| 367 | spin_lock_irqsave(&portdata->lock, flags); |
| 368 | if (portdata->outstanding_urbs > N_OUT_URB) { |
| 369 | spin_unlock_irqrestore(&portdata->lock, flags); |
| 370 | dbg("%s - write limit hit\n", __func__); |
| 371 | return 0; |
| 372 | } |
| 373 | portdata->outstanding_urbs++; |
| 374 | spin_unlock_irqrestore(&portdata->lock, flags); |
| 375 | |
| 376 | buffer = kmalloc(count, GFP_ATOMIC); |
| 377 | if (!buffer) { |
| 378 | dev_err(&port->dev, "out of memory\n"); |
| 379 | count = -ENOMEM; |
| 380 | goto error_no_buffer; |
| 381 | } |
| 382 | |
| 383 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
| 384 | if (!urb) { |
| 385 | dev_err(&port->dev, "no more free urbs\n"); |
| 386 | count = -ENOMEM; |
| 387 | goto error_no_urb; |
| 388 | } |
| 389 | |
| 390 | memcpy(buffer, buf, count); |
| 391 | |
| 392 | usb_serial_debug_data(debug, &port->dev, __func__, count, buffer); |
| 393 | |
| 394 | usb_fill_bulk_urb(urb, serial->dev, |
| 395 | usb_sndbulkpipe(serial->dev, |
| 396 | port->bulk_out_endpointAddress), |
| 397 | buffer, count, sierra_outdat_callback, port); |
| 398 | |
| 399 | /* send it down the pipe */ |
| 400 | status = usb_submit_urb(urb, GFP_ATOMIC); |
| 401 | if (status) { |
| 402 | dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " |
| 403 | "with status = %d\n", __func__, status); |
| 404 | count = status; |
| 405 | goto error; |
| 406 | } |
| 407 | |
| 408 | /* we are done with this urb, so let the host driver |
| 409 | * really free it when it is finished with it */ |
| 410 | usb_free_urb(urb); |
| 411 | |
| 412 | return count; |
| 413 | error: |
| 414 | usb_free_urb(urb); |
| 415 | error_no_urb: |
| 416 | kfree(buffer); |
| 417 | error_no_buffer: |
| 418 | spin_lock_irqsave(&portdata->lock, flags); |
| 419 | --portdata->outstanding_urbs; |
| 420 | spin_unlock_irqrestore(&portdata->lock, flags); |
| 421 | return count; |
| 422 | } |
| 423 | |
| 424 | static void sierra_indat_callback(struct urb *urb) |
| 425 | { |
| 426 | int err; |
| 427 | int endpoint; |
| 428 | struct usb_serial_port *port; |
| 429 | struct tty_struct *tty; |
| 430 | unsigned char *data = urb->transfer_buffer; |
| 431 | int status = urb->status; |
| 432 | |
| 433 | dbg("%s: %p", __func__, urb); |
| 434 | |
| 435 | endpoint = usb_pipeendpoint(urb->pipe); |
| 436 | port = urb->context; |
| 437 | |
| 438 | if (status) { |
| 439 | dbg("%s: nonzero status: %d on endpoint %02x.", |
| 440 | __func__, status, endpoint); |
| 441 | } else { |
| 442 | tty = port->port.tty; |
| 443 | if (urb->actual_length) { |
| 444 | tty_buffer_request_room(tty, urb->actual_length); |
| 445 | tty_insert_flip_string(tty, data, urb->actual_length); |
| 446 | tty_flip_buffer_push(tty); |
| 447 | } else { |
| 448 | dbg("%s: empty read urb received", __func__); |
| 449 | } |
| 450 | |
| 451 | /* Resubmit urb so we continue receiving */ |
| 452 | if (port->port.count && status != -ESHUTDOWN) { |
| 453 | err = usb_submit_urb(urb, GFP_ATOMIC); |
| 454 | if (err) |
| 455 | dev_err(&port->dev, "resubmit read urb failed." |
| 456 | "(%d)\n", err); |
| 457 | } |
| 458 | } |
| 459 | return; |
| 460 | } |
| 461 | |
| 462 | static void sierra_instat_callback(struct urb *urb) |
| 463 | { |
| 464 | int err; |
| 465 | int status = urb->status; |
| 466 | struct usb_serial_port *port = urb->context; |
| 467 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); |
| 468 | struct usb_serial *serial = port->serial; |
| 469 | |
| 470 | dbg("%s", __func__); |
| 471 | dbg("%s: urb %p port %p has data %p", __func__, urb, port, portdata); |
| 472 | |
| 473 | if (status == 0) { |
| 474 | struct usb_ctrlrequest *req_pkt = |
| 475 | (struct usb_ctrlrequest *)urb->transfer_buffer; |
| 476 | |
| 477 | if (!req_pkt) { |
| 478 | dbg("%s: NULL req_pkt\n", __func__); |
| 479 | return; |
| 480 | } |
| 481 | if ((req_pkt->bRequestType == 0xA1) && |
| 482 | (req_pkt->bRequest == 0x20)) { |
| 483 | int old_dcd_state; |
| 484 | unsigned char signals = *((unsigned char *) |
| 485 | urb->transfer_buffer + |
| 486 | sizeof(struct usb_ctrlrequest)); |
| 487 | |
| 488 | dbg("%s: signal x%x", __func__, signals); |
| 489 | |
| 490 | old_dcd_state = portdata->dcd_state; |
| 491 | portdata->cts_state = 1; |
| 492 | portdata->dcd_state = ((signals & 0x01) ? 1 : 0); |
| 493 | portdata->dsr_state = ((signals & 0x02) ? 1 : 0); |
| 494 | portdata->ri_state = ((signals & 0x08) ? 1 : 0); |
| 495 | |
| 496 | if (port->port.tty && !C_CLOCAL(port->port.tty) && |
| 497 | old_dcd_state && !portdata->dcd_state) |
| 498 | tty_hangup(port->port.tty); |
| 499 | } else { |
| 500 | dbg("%s: type %x req %x", __func__, |
| 501 | req_pkt->bRequestType, req_pkt->bRequest); |
| 502 | } |
| 503 | } else |
| 504 | dbg("%s: error %d", __func__, status); |
| 505 | |
| 506 | /* Resubmit urb so we continue receiving IRQ data */ |
| 507 | if (status != -ESHUTDOWN) { |
| 508 | urb->dev = serial->dev; |
| 509 | err = usb_submit_urb(urb, GFP_ATOMIC); |
| 510 | if (err) |
| 511 | dbg("%s: resubmit intr urb failed. (%d)", |
| 512 | __func__, err); |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | static int sierra_write_room(struct tty_struct *tty) |
| 517 | { |
| 518 | struct usb_serial_port *port = tty->driver_data; |
| 519 | struct sierra_port_private *portdata = usb_get_serial_port_data(port); |
| 520 | unsigned long flags; |
| 521 | |
| 522 | dbg("%s - port %d", __func__, port->number); |
| 523 | |
| 524 | /* try to give a good number back based on if we have any free urbs at |
| 525 | * this point in time */ |
| 526 | spin_lock_irqsave(&portdata->lock, flags); |
| 527 | if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) { |
| 528 | spin_unlock_irqrestore(&portdata->lock, flags); |
| 529 | dbg("%s - write limit hit\n", __func__); |
| 530 | return 0; |
| 531 | } |
| 532 | spin_unlock_irqrestore(&portdata->lock, flags); |
| 533 | |
| 534 | return 2048; |
| 535 | } |
| 536 | |
| 537 | static int sierra_open(struct tty_struct *tty, |
| 538 | struct usb_serial_port *port, struct file *filp) |
| 539 | { |
| 540 | struct sierra_port_private *portdata; |
| 541 | struct usb_serial *serial = port->serial; |
| 542 | int i; |
| 543 | struct urb *urb; |
| 544 | int result; |
| 545 | |
| 546 | portdata = usb_get_serial_port_data(port); |
| 547 | |
| 548 | dbg("%s", __func__); |
| 549 | |
| 550 | /* Set some sane defaults */ |
| 551 | portdata->rts_state = 1; |
| 552 | portdata->dtr_state = 1; |
| 553 | |
| 554 | /* Reset low level data toggle and start reading from endpoints */ |
| 555 | for (i = 0; i < N_IN_URB; i++) { |
| 556 | urb = portdata->in_urbs[i]; |
| 557 | if (!urb) |
| 558 | continue; |
| 559 | if (urb->dev != serial->dev) { |
| 560 | dbg("%s: dev %p != %p", __func__, |
| 561 | urb->dev, serial->dev); |
| 562 | continue; |
| 563 | } |
| 564 | |
| 565 | /* |
| 566 | * make sure endpoint data toggle is synchronized with the |
| 567 | * device |
| 568 | */ |
| 569 | usb_clear_halt(urb->dev, urb->pipe); |
| 570 | |
| 571 | result = usb_submit_urb(urb, GFP_KERNEL); |
| 572 | if (result) { |
| 573 | dev_err(&port->dev, "submit urb %d failed (%d) %d\n", |
| 574 | i, result, urb->transfer_buffer_length); |
| 575 | } |
| 576 | } |
| 577 | |
| 578 | if (tty) |
| 579 | tty->low_latency = 1; |
| 580 | |
| 581 | sierra_send_setup(tty, port); |
| 582 | |
| 583 | /* start up the interrupt endpoint if we have one */ |
| 584 | if (port->interrupt_in_urb) { |
| 585 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
| 586 | if (result) |
| 587 | dev_err(&port->dev, "submit irq_in urb failed %d\n", |
| 588 | result); |
| 589 | } |
| 590 | return 0; |
| 591 | } |
| 592 | |
| 593 | static void sierra_close(struct tty_struct *tty, |
| 594 | struct usb_serial_port *port, struct file *filp) |
| 595 | { |
| 596 | int i; |
| 597 | struct usb_serial *serial = port->serial; |
| 598 | struct sierra_port_private *portdata; |
| 599 | |
| 600 | dbg("%s", __func__); |
| 601 | portdata = usb_get_serial_port_data(port); |
| 602 | |
| 603 | portdata->rts_state = 0; |
| 604 | portdata->dtr_state = 0; |
| 605 | |
| 606 | if (serial->dev) { |
| 607 | mutex_lock(&serial->disc_mutex); |
| 608 | if (!serial->disconnected) |
| 609 | sierra_send_setup(tty, port); |
| 610 | mutex_unlock(&serial->disc_mutex); |
| 611 | |
| 612 | /* Stop reading/writing urbs */ |
| 613 | for (i = 0; i < N_IN_URB; i++) |
| 614 | usb_kill_urb(portdata->in_urbs[i]); |
| 615 | } |
| 616 | |
| 617 | usb_kill_urb(port->interrupt_in_urb); |
| 618 | |
| 619 | port->port.tty = NULL; /* FIXME */ |
| 620 | } |
| 621 | |
| 622 | static int sierra_startup(struct usb_serial *serial) |
| 623 | { |
| 624 | struct usb_serial_port *port; |
| 625 | struct sierra_port_private *portdata; |
| 626 | struct urb *urb; |
| 627 | int i; |
| 628 | int j; |
| 629 | |
| 630 | dbg("%s", __func__); |
| 631 | |
| 632 | /* Set Device mode to D0 */ |
| 633 | sierra_set_power_state(serial->dev, 0x0000); |
| 634 | |
| 635 | /* Check NMEA and set */ |
| 636 | if (nmea) |
| 637 | sierra_vsc_set_nmea(serial->dev, 1); |
| 638 | |
| 639 | /* Now setup per port private data */ |
| 640 | for (i = 0; i < serial->num_ports; i++) { |
| 641 | port = serial->port[i]; |
| 642 | portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); |
| 643 | if (!portdata) { |
| 644 | dbg("%s: kmalloc for sierra_port_private (%d) failed!.", |
| 645 | __func__, i); |
| 646 | return -ENOMEM; |
| 647 | } |
| 648 | spin_lock_init(&portdata->lock); |
| 649 | for (j = 0; j < N_IN_URB; j++) { |
| 650 | portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL); |
| 651 | if (!portdata->in_buffer[j]) { |
| 652 | for (--j; j >= 0; j--) |
| 653 | kfree(portdata->in_buffer[j]); |
| 654 | kfree(portdata); |
| 655 | return -ENOMEM; |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | usb_set_serial_port_data(port, portdata); |
| 660 | |
| 661 | /* initialize the in urbs */ |
| 662 | for (j = 0; j < N_IN_URB; ++j) { |
| 663 | urb = usb_alloc_urb(0, GFP_KERNEL); |
| 664 | if (urb == NULL) { |
| 665 | dbg("%s: alloc for in port failed.", |
| 666 | __func__); |
| 667 | continue; |
| 668 | } |
| 669 | /* Fill URB using supplied data. */ |
| 670 | usb_fill_bulk_urb(urb, serial->dev, |
| 671 | usb_rcvbulkpipe(serial->dev, |
| 672 | port->bulk_in_endpointAddress), |
| 673 | portdata->in_buffer[j], IN_BUFLEN, |
| 674 | sierra_indat_callback, port); |
| 675 | portdata->in_urbs[j] = urb; |
| 676 | } |
| 677 | } |
| 678 | |
| 679 | return 0; |
| 680 | } |
| 681 | |
| 682 | static void sierra_shutdown(struct usb_serial *serial) |
| 683 | { |
| 684 | int i, j; |
| 685 | struct usb_serial_port *port; |
| 686 | struct sierra_port_private *portdata; |
| 687 | |
| 688 | dbg("%s", __func__); |
| 689 | |
| 690 | for (i = 0; i < serial->num_ports; ++i) { |
| 691 | port = serial->port[i]; |
| 692 | if (!port) |
| 693 | continue; |
| 694 | portdata = usb_get_serial_port_data(port); |
| 695 | if (!portdata) |
| 696 | continue; |
| 697 | |
| 698 | for (j = 0; j < N_IN_URB; j++) { |
| 699 | usb_kill_urb(portdata->in_urbs[j]); |
| 700 | usb_free_urb(portdata->in_urbs[j]); |
| 701 | kfree(portdata->in_buffer[j]); |
| 702 | } |
| 703 | kfree(portdata); |
| 704 | usb_set_serial_port_data(port, NULL); |
| 705 | } |
| 706 | } |
| 707 | |
| 708 | static struct usb_serial_driver sierra_device = { |
| 709 | .driver = { |
| 710 | .owner = THIS_MODULE, |
| 711 | .name = "sierra", |
| 712 | }, |
| 713 | .description = "Sierra USB modem", |
| 714 | .id_table = id_table, |
| 715 | .usb_driver = &sierra_driver, |
| 716 | .calc_num_ports = sierra_calc_num_ports, |
| 717 | .probe = sierra_probe, |
| 718 | .open = sierra_open, |
| 719 | .close = sierra_close, |
| 720 | .write = sierra_write, |
| 721 | .write_room = sierra_write_room, |
| 722 | .set_termios = sierra_set_termios, |
| 723 | .tiocmget = sierra_tiocmget, |
| 724 | .tiocmset = sierra_tiocmset, |
| 725 | .attach = sierra_startup, |
| 726 | .shutdown = sierra_shutdown, |
| 727 | .read_int_callback = sierra_instat_callback, |
| 728 | }; |
| 729 | |
| 730 | /* Functions used by new usb-serial code. */ |
| 731 | static int __init sierra_init(void) |
| 732 | { |
| 733 | int retval; |
| 734 | retval = usb_serial_register(&sierra_device); |
| 735 | if (retval) |
| 736 | goto failed_device_register; |
| 737 | |
| 738 | |
| 739 | retval = usb_register(&sierra_driver); |
| 740 | if (retval) |
| 741 | goto failed_driver_register; |
| 742 | |
| 743 | info(DRIVER_DESC ": " DRIVER_VERSION); |
| 744 | |
| 745 | return 0; |
| 746 | |
| 747 | failed_driver_register: |
| 748 | usb_serial_deregister(&sierra_device); |
| 749 | failed_device_register: |
| 750 | return retval; |
| 751 | } |
| 752 | |
| 753 | static void __exit sierra_exit(void) |
| 754 | { |
| 755 | usb_deregister(&sierra_driver); |
| 756 | usb_serial_deregister(&sierra_device); |
| 757 | } |
| 758 | |
| 759 | module_init(sierra_init); |
| 760 | module_exit(sierra_exit); |
| 761 | |
| 762 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 763 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 764 | MODULE_VERSION(DRIVER_VERSION); |
| 765 | MODULE_LICENSE("GPL"); |
| 766 | |
| 767 | module_param(nmea, bool, S_IRUGO | S_IWUSR); |
| 768 | MODULE_PARM_DESC(nmea, "NMEA streaming"); |
| 769 | |
| 770 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
| 771 | MODULE_PARM_DESC(debug, "Debug messages"); |