1 /* 2 USB Driver for GSM modems 3 4 Copyright (C) 2005 Matthias Urlichs <smurf@smurf.noris.de> 5 6 This driver is free software; you can redistribute it and/or modify 7 it under the terms of Version 2 of the GNU General Public License as 8 published by the Free Software Foundation. 9 10 Portions copied from the Keyspan driver by Hugh Blemings <hugh@blemings.org> 11 12 History: see the git log. 13 14 Work sponsored by: Sigos GmbH, Germany <info@sigos.de> 15 16 This driver exists because the "normal" serial driver doesn't work too well 17 with GSM modems. Issues: 18 - data loss -- one single Receive URB is not nearly enough 19 - nonstandard flow (Option devices) control 20 - controlling the baud rate doesn't make sense 21 22 This driver is named "option" because the most common device it's 23 used for is a PC-Card (with an internal OHCI-USB interface, behind 24 which the GSM interface sits), made by Option Inc. 25 26 Some of the "one port" devices actually exhibit multiple USB instances 27 on the USB bus. This is not a bug, these ports are used for different 28 device features. 29 */ 30 31 #define DRIVER_VERSION "v0.7.1" 32 #define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>" 33 #define DRIVER_DESC "USB Driver for GSM modems" 34 35 #include <linux/kernel.h> 36 #include <linux/jiffies.h> 37 #include <linux/errno.h> 38 #include <linux/tty.h> 39 #include <linux/tty_flip.h> 40 #include <linux/module.h> 41 #include <linux/usb.h> 42 #include <linux/usb/serial.h> 43 44 /* Function prototypes */ 45 static int option_open(struct usb_serial_port *port, struct file *filp); 46 static void option_close(struct usb_serial_port *port, struct file *filp); 47 static int option_startup(struct usb_serial *serial); 48 static void option_shutdown(struct usb_serial *serial); 49 static void option_rx_throttle(struct usb_serial_port *port); 50 static void option_rx_unthrottle(struct usb_serial_port *port); 51 static int option_write_room(struct usb_serial_port *port); 52 53 static void option_instat_callback(struct urb *urb); 54 55 static int option_write(struct usb_serial_port *port, 56 const unsigned char *buf, int count); 57 58 static int option_chars_in_buffer(struct usb_serial_port *port); 59 static int option_ioctl(struct usb_serial_port *port, struct file *file, 60 unsigned int cmd, unsigned long arg); 61 static void option_set_termios(struct usb_serial_port *port, 62 struct ktermios *old); 63 static void option_break_ctl(struct usb_serial_port *port, int break_state); 64 static int option_tiocmget(struct usb_serial_port *port, struct file *file); 65 static int option_tiocmset(struct usb_serial_port *port, struct file *file, 66 unsigned int set, unsigned int clear); 67 static int option_send_setup(struct usb_serial_port *port); 68 69 /* Vendor and product IDs */ 70 #define OPTION_VENDOR_ID 0x0AF0 71 #define OPTION_PRODUCT_COLT 0x5000 72 #define OPTION_PRODUCT_RICOLA 0x6000 73 #define OPTION_PRODUCT_RICOLA_LIGHT 0x6100 74 #define OPTION_PRODUCT_RICOLA_QUAD 0x6200 75 #define OPTION_PRODUCT_RICOLA_QUAD_LIGHT 0x6300 76 #define OPTION_PRODUCT_RICOLA_NDIS 0x6050 77 #define OPTION_PRODUCT_RICOLA_NDIS_LIGHT 0x6150 78 #define OPTION_PRODUCT_RICOLA_NDIS_QUAD 0x6250 79 #define OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT 0x6350 80 #define OPTION_PRODUCT_COBRA 0x6500 81 #define OPTION_PRODUCT_COBRA_BUS 0x6501 82 #define OPTION_PRODUCT_VIPER 0x6600 83 #define OPTION_PRODUCT_VIPER_BUS 0x6601 84 #define OPTION_PRODUCT_GT_MAX_READY 0x6701 85 #define OPTION_PRODUCT_GT_MAX 0x6711 86 #define OPTION_PRODUCT_FUJI_MODEM_LIGHT 0x6721 87 #define OPTION_PRODUCT_FUJI_MODEM_GT 0x6741 88 #define OPTION_PRODUCT_FUJI_MODEM_EX 0x6761 89 #define OPTION_PRODUCT_FUJI_NETWORK_LIGHT 0x6731 90 #define OPTION_PRODUCT_FUJI_NETWORK_GT 0x6751 91 #define OPTION_PRODUCT_FUJI_NETWORK_EX 0x6771 92 #define OPTION_PRODUCT_KOI_MODEM 0x6800 93 #define OPTION_PRODUCT_KOI_NETWORK 0x6811 94 #define OPTION_PRODUCT_SCORPION_MODEM 0x6901 95 #define OPTION_PRODUCT_SCORPION_NETWORK 0x6911 96 #define OPTION_PRODUCT_ETNA_MODEM 0x7001 97 #define OPTION_PRODUCT_ETNA_NETWORK 0x7011 98 #define OPTION_PRODUCT_ETNA_MODEM_LITE 0x7021 99 #define OPTION_PRODUCT_ETNA_MODEM_GT 0x7041 100 #define OPTION_PRODUCT_ETNA_MODEM_EX 0x7061 101 #define OPTION_PRODUCT_ETNA_NETWORK_LITE 0x7031 102 #define OPTION_PRODUCT_ETNA_NETWORK_GT 0x7051 103 #define OPTION_PRODUCT_ETNA_NETWORK_EX 0x7071 104 #define OPTION_PRODUCT_ETNA_KOI_MODEM 0x7100 105 #define OPTION_PRODUCT_ETNA_KOI_NETWORK 0x7111 106 107 #define HUAWEI_VENDOR_ID 0x12D1 108 #define HUAWEI_PRODUCT_E600 0x1001 109 #define HUAWEI_PRODUCT_E220 0x1003 110 111 #define NOVATELWIRELESS_VENDOR_ID 0x1410 112 113 #define ANYDATA_VENDOR_ID 0x16d5 114 #define ANYDATA_PRODUCT_ADU_E100A 0x6501 115 #define ANYDATA_PRODUCT_ADU_500A 0x6502 116 117 #define BANDRICH_VENDOR_ID 0x1A8D 118 #define BANDRICH_PRODUCT_C100_1 0x1002 119 #define BANDRICH_PRODUCT_C100_2 0x1003 120 121 #define DELL_VENDOR_ID 0x413C 122 123 static struct usb_device_id option_ids[] = { 124 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) }, 125 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) }, 126 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) }, 127 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD) }, 128 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD_LIGHT) }, 129 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS) }, 130 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_LIGHT) }, 131 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD) }, 132 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT) }, 133 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA) }, 134 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA_BUS) }, 135 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER) }, 136 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER_BUS) }, 137 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GT_MAX_READY) }, 138 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GT_MAX) }, 139 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_LIGHT) }, 140 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_GT) }, 141 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_EX) }, 142 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_LIGHT) }, 143 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_GT) }, 144 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_EX) }, 145 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_KOI_MODEM) }, 146 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_KOI_NETWORK) }, 147 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_SCORPION_MODEM) }, 148 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_SCORPION_NETWORK) }, 149 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM) }, 150 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK) }, 151 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_LITE) }, 152 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_GT) }, 153 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_EX) }, 154 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_LITE) }, 155 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_GT) }, 156 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_EX) }, 157 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_KOI_MODEM) }, 158 { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_KOI_NETWORK) }, 159 { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600) }, 160 { USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E220) }, 161 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1100) }, /* Novatel Merlin XS620/S640 */ 162 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1110) }, /* Novatel Merlin S620 */ 163 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1120) }, /* Novatel Merlin EX720 */ 164 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1130) }, /* Novatel Merlin S720 */ 165 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1400) }, /* Novatel U730 */ 166 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1410) }, /* Novatel U740 */ 167 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1420) }, /* Novatel EU870 */ 168 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x1430) }, /* Novatel Merlin XU870 HSDPA/3G */ 169 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2100) }, /* Novatel EV620 CDMA/EV-DO */ 170 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2110) }, /* Novatel Merlin ES620 / Merlin ES720 / Ovation U720 */ 171 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2130) }, /* Novatel Merlin ES620 SM Bus */ 172 { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2410) }, /* Novatel EU740 */ 173 { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_E100A) }, 174 { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_500A) }, 175 { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_1) }, 176 { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_2) }, 177 { USB_DEVICE(DELL_VENDOR_ID, 0x8118) }, /* Dell Wireless 5510 Mobile Broadband HSDPA ExpressCard */ 178 { } /* Terminating entry */ 179 }; 180 MODULE_DEVICE_TABLE(usb, option_ids); 181 182 static struct usb_driver option_driver = { 183 .name = "option", 184 .probe = usb_serial_probe, 185 .disconnect = usb_serial_disconnect, 186 .id_table = option_ids, 187 .no_dynamic_id = 1, 188 }; 189 190 /* The card has three separate interfaces, which the serial driver 191 * recognizes separately, thus num_port=1. 192 */ 193 194 static struct usb_serial_driver option_1port_device = { 195 .driver = { 196 .owner = THIS_MODULE, 197 .name = "option1", 198 }, 199 .description = "GSM modem (1-port)", 200 .usb_driver = &option_driver, 201 .id_table = option_ids, 202 .num_interrupt_in = NUM_DONT_CARE, 203 .num_bulk_in = NUM_DONT_CARE, 204 .num_bulk_out = NUM_DONT_CARE, 205 .num_ports = 1, 206 .open = option_open, 207 .close = option_close, 208 .write = option_write, 209 .write_room = option_write_room, 210 .chars_in_buffer = option_chars_in_buffer, 211 .throttle = option_rx_throttle, 212 .unthrottle = option_rx_unthrottle, 213 .ioctl = option_ioctl, 214 .set_termios = option_set_termios, 215 .break_ctl = option_break_ctl, 216 .tiocmget = option_tiocmget, 217 .tiocmset = option_tiocmset, 218 .attach = option_startup, 219 .shutdown = option_shutdown, 220 .read_int_callback = option_instat_callback, 221 }; 222 223 #ifdef CONFIG_USB_DEBUG 224 static int debug; 225 #else 226 #define debug 0 227 #endif 228 229 /* per port private data */ 230 231 #define N_IN_URB 4 232 #define N_OUT_URB 1 233 #define IN_BUFLEN 4096 234 #define OUT_BUFLEN 128 235 236 struct option_port_private { 237 /* Input endpoints and buffer for this port */ 238 struct urb *in_urbs[N_IN_URB]; 239 char in_buffer[N_IN_URB][IN_BUFLEN]; 240 /* Output endpoints and buffer for this port */ 241 struct urb *out_urbs[N_OUT_URB]; 242 char out_buffer[N_OUT_URB][OUT_BUFLEN]; 243 244 /* Settings for the port */ 245 int rts_state; /* Handshaking pins (outputs) */ 246 int dtr_state; 247 int cts_state; /* Handshaking pins (inputs) */ 248 int dsr_state; 249 int dcd_state; 250 int ri_state; 251 252 unsigned long tx_start_time[N_OUT_URB]; 253 }; 254 255 /* Functions used by new usb-serial code. */ 256 static int __init option_init(void) 257 { 258 int retval; 259 retval = usb_serial_register(&option_1port_device); 260 if (retval) 261 goto failed_1port_device_register; 262 retval = usb_register(&option_driver); 263 if (retval) 264 goto failed_driver_register; 265 266 info(DRIVER_DESC ": " DRIVER_VERSION); 267 268 return 0; 269 270 failed_driver_register: 271 usb_serial_deregister (&option_1port_device); 272 failed_1port_device_register: 273 return retval; 274 } 275 276 static void __exit option_exit(void) 277 { 278 usb_deregister (&option_driver); 279 usb_serial_deregister (&option_1port_device); 280 } 281 282 module_init(option_init); 283 module_exit(option_exit); 284 285 static void option_rx_throttle(struct usb_serial_port *port) 286 { 287 dbg("%s", __FUNCTION__); 288 } 289 290 static void option_rx_unthrottle(struct usb_serial_port *port) 291 { 292 dbg("%s", __FUNCTION__); 293 } 294 295 static void option_break_ctl(struct usb_serial_port *port, int break_state) 296 { 297 /* Unfortunately, I don't know how to send a break */ 298 dbg("%s", __FUNCTION__); 299 } 300 301 static void option_set_termios(struct usb_serial_port *port, 302 struct ktermios *old_termios) 303 { 304 dbg("%s", __FUNCTION__); 305 306 option_send_setup(port); 307 } 308 309 static int option_tiocmget(struct usb_serial_port *port, struct file *file) 310 { 311 unsigned int value; 312 struct option_port_private *portdata; 313 314 portdata = usb_get_serial_port_data(port); 315 316 value = ((portdata->rts_state) ? TIOCM_RTS : 0) | 317 ((portdata->dtr_state) ? TIOCM_DTR : 0) | 318 ((portdata->cts_state) ? TIOCM_CTS : 0) | 319 ((portdata->dsr_state) ? TIOCM_DSR : 0) | 320 ((portdata->dcd_state) ? TIOCM_CAR : 0) | 321 ((portdata->ri_state) ? TIOCM_RNG : 0); 322 323 return value; 324 } 325 326 static int option_tiocmset(struct usb_serial_port *port, struct file *file, 327 unsigned int set, unsigned int clear) 328 { 329 struct option_port_private *portdata; 330 331 portdata = usb_get_serial_port_data(port); 332 333 if (set & TIOCM_RTS) 334 portdata->rts_state = 1; 335 if (set & TIOCM_DTR) 336 portdata->dtr_state = 1; 337 338 if (clear & TIOCM_RTS) 339 portdata->rts_state = 0; 340 if (clear & TIOCM_DTR) 341 portdata->dtr_state = 0; 342 return option_send_setup(port); 343 } 344 345 static int option_ioctl(struct usb_serial_port *port, struct file *file, 346 unsigned int cmd, unsigned long arg) 347 { 348 return -ENOIOCTLCMD; 349 } 350 351 /* Write */ 352 static int option_write(struct usb_serial_port *port, 353 const unsigned char *buf, int count) 354 { 355 struct option_port_private *portdata; 356 int i; 357 int left, todo; 358 struct urb *this_urb = NULL; /* spurious */ 359 int err; 360 361 portdata = usb_get_serial_port_data(port); 362 363 dbg("%s: write (%d chars)", __FUNCTION__, count); 364 365 i = 0; 366 left = count; 367 for (i=0; left > 0 && i < N_OUT_URB; i++) { 368 todo = left; 369 if (todo > OUT_BUFLEN) 370 todo = OUT_BUFLEN; 371 372 this_urb = portdata->out_urbs[i]; 373 if (this_urb->status == -EINPROGRESS) { 374 if (time_before(jiffies, 375 portdata->tx_start_time[i] + 10 * HZ)) 376 continue; 377 usb_unlink_urb(this_urb); 378 continue; 379 } 380 if (this_urb->status != 0) 381 dbg("usb_write %p failed (err=%d)", 382 this_urb, this_urb->status); 383 384 dbg("%s: endpoint %d buf %d", __FUNCTION__, 385 usb_pipeendpoint(this_urb->pipe), i); 386 387 /* send the data */ 388 memcpy (this_urb->transfer_buffer, buf, todo); 389 this_urb->transfer_buffer_length = todo; 390 391 this_urb->dev = port->serial->dev; 392 err = usb_submit_urb(this_urb, GFP_ATOMIC); 393 if (err) { 394 dbg("usb_submit_urb %p (write bulk) failed " 395 "(%d, has %d)", this_urb, 396 err, this_urb->status); 397 continue; 398 } 399 portdata->tx_start_time[i] = jiffies; 400 buf += todo; 401 left -= todo; 402 } 403 404 count -= left; 405 dbg("%s: wrote (did %d)", __FUNCTION__, count); 406 return count; 407 } 408 409 static void option_indat_callback(struct urb *urb) 410 { 411 int err; 412 int endpoint; 413 struct usb_serial_port *port; 414 struct tty_struct *tty; 415 unsigned char *data = urb->transfer_buffer; 416 417 dbg("%s: %p", __FUNCTION__, urb); 418 419 endpoint = usb_pipeendpoint(urb->pipe); 420 port = (struct usb_serial_port *) urb->context; 421 422 if (urb->status) { 423 dbg("%s: nonzero status: %d on endpoint %02x.", 424 __FUNCTION__, urb->status, endpoint); 425 } else { 426 tty = port->tty; 427 if (urb->actual_length) { 428 tty_buffer_request_room(tty, urb->actual_length); 429 tty_insert_flip_string(tty, data, urb->actual_length); 430 tty_flip_buffer_push(tty); 431 } else { 432 dbg("%s: empty read urb received", __FUNCTION__); 433 } 434 435 /* Resubmit urb so we continue receiving */ 436 if (port->open_count && urb->status != -ESHUTDOWN) { 437 err = usb_submit_urb(urb, GFP_ATOMIC); 438 if (err) 439 printk(KERN_ERR "%s: resubmit read urb failed. " 440 "(%d)", __FUNCTION__, err); 441 } 442 } 443 return; 444 } 445 446 static void option_outdat_callback(struct urb *urb) 447 { 448 struct usb_serial_port *port; 449 450 dbg("%s", __FUNCTION__); 451 452 port = (struct usb_serial_port *) urb->context; 453 454 usb_serial_port_softint(port); 455 } 456 457 static void option_instat_callback(struct urb *urb) 458 { 459 int err; 460 struct usb_serial_port *port = (struct usb_serial_port *) urb->context; 461 struct option_port_private *portdata = usb_get_serial_port_data(port); 462 struct usb_serial *serial = port->serial; 463 464 dbg("%s", __FUNCTION__); 465 dbg("%s: urb %p port %p has data %p", __FUNCTION__,urb,port,portdata); 466 467 if (urb->status == 0) { 468 struct usb_ctrlrequest *req_pkt = 469 (struct usb_ctrlrequest *)urb->transfer_buffer; 470 471 if (!req_pkt) { 472 dbg("%s: NULL req_pkt\n", __FUNCTION__); 473 return; 474 } 475 if ((req_pkt->bRequestType == 0xA1) && 476 (req_pkt->bRequest == 0x20)) { 477 int old_dcd_state; 478 unsigned char signals = *((unsigned char *) 479 urb->transfer_buffer + 480 sizeof(struct usb_ctrlrequest)); 481 482 dbg("%s: signal x%x", __FUNCTION__, signals); 483 484 old_dcd_state = portdata->dcd_state; 485 portdata->cts_state = 1; 486 portdata->dcd_state = ((signals & 0x01) ? 1 : 0); 487 portdata->dsr_state = ((signals & 0x02) ? 1 : 0); 488 portdata->ri_state = ((signals & 0x08) ? 1 : 0); 489 490 if (port->tty && !C_CLOCAL(port->tty) && 491 old_dcd_state && !portdata->dcd_state) 492 tty_hangup(port->tty); 493 } else { 494 dbg("%s: type %x req %x", __FUNCTION__, 495 req_pkt->bRequestType,req_pkt->bRequest); 496 } 497 } else 498 dbg("%s: error %d", __FUNCTION__, urb->status); 499 500 /* Resubmit urb so we continue receiving IRQ data */ 501 if (urb->status != -ESHUTDOWN) { 502 urb->dev = serial->dev; 503 err = usb_submit_urb(urb, GFP_ATOMIC); 504 if (err) 505 dbg("%s: resubmit intr urb failed. (%d)", 506 __FUNCTION__, err); 507 } 508 } 509 510 static int option_write_room(struct usb_serial_port *port) 511 { 512 struct option_port_private *portdata; 513 int i; 514 int data_len = 0; 515 struct urb *this_urb; 516 517 portdata = usb_get_serial_port_data(port); 518 519 for (i=0; i < N_OUT_URB; i++) { 520 this_urb = portdata->out_urbs[i]; 521 if (this_urb && this_urb->status != -EINPROGRESS) 522 data_len += OUT_BUFLEN; 523 } 524 525 dbg("%s: %d", __FUNCTION__, data_len); 526 return data_len; 527 } 528 529 static int option_chars_in_buffer(struct usb_serial_port *port) 530 { 531 struct option_port_private *portdata; 532 int i; 533 int data_len = 0; 534 struct urb *this_urb; 535 536 portdata = usb_get_serial_port_data(port); 537 538 for (i=0; i < N_OUT_URB; i++) { 539 this_urb = portdata->out_urbs[i]; 540 if (this_urb && this_urb->status == -EINPROGRESS) 541 data_len += this_urb->transfer_buffer_length; 542 } 543 dbg("%s: %d", __FUNCTION__, data_len); 544 return data_len; 545 } 546 547 static int option_open(struct usb_serial_port *port, struct file *filp) 548 { 549 struct option_port_private *portdata; 550 struct usb_serial *serial = port->serial; 551 int i, err; 552 struct urb *urb; 553 554 portdata = usb_get_serial_port_data(port); 555 556 dbg("%s", __FUNCTION__); 557 558 /* Set some sane defaults */ 559 portdata->rts_state = 1; 560 portdata->dtr_state = 1; 561 562 /* Reset low level data toggle and start reading from endpoints */ 563 for (i = 0; i < N_IN_URB; i++) { 564 urb = portdata->in_urbs[i]; 565 if (! urb) 566 continue; 567 if (urb->dev != serial->dev) { 568 dbg("%s: dev %p != %p", __FUNCTION__, 569 urb->dev, serial->dev); 570 continue; 571 } 572 573 /* 574 * make sure endpoint data toggle is synchronized with the 575 * device 576 */ 577 usb_clear_halt(urb->dev, urb->pipe); 578 579 err = usb_submit_urb(urb, GFP_KERNEL); 580 if (err) { 581 dbg("%s: submit urb %d failed (%d) %d", 582 __FUNCTION__, i, err, 583 urb->transfer_buffer_length); 584 } 585 } 586 587 /* Reset low level data toggle on out endpoints */ 588 for (i = 0; i < N_OUT_URB; i++) { 589 urb = portdata->out_urbs[i]; 590 if (! urb) 591 continue; 592 urb->dev = serial->dev; 593 /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), 594 usb_pipeout(urb->pipe), 0); */ 595 } 596 597 port->tty->low_latency = 1; 598 599 option_send_setup(port); 600 601 return (0); 602 } 603 604 static void option_close(struct usb_serial_port *port, struct file *filp) 605 { 606 int i; 607 struct usb_serial *serial = port->serial; 608 struct option_port_private *portdata; 609 610 dbg("%s", __FUNCTION__); 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 option_send_setup(port); 618 619 /* Stop reading/writing urbs */ 620 for (i = 0; i < N_IN_URB; i++) 621 usb_kill_urb(portdata->in_urbs[i]); 622 for (i = 0; i < N_OUT_URB; i++) 623 usb_kill_urb(portdata->out_urbs[i]); 624 } 625 port->tty = NULL; 626 } 627 628 /* Helper functions used by option_setup_urbs */ 629 static struct urb *option_setup_urb(struct usb_serial *serial, int endpoint, 630 int dir, void *ctx, char *buf, int len, 631 void (*callback)(struct urb *)) 632 { 633 struct urb *urb; 634 635 if (endpoint == -1) 636 return NULL; /* endpoint not needed */ 637 638 urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */ 639 if (urb == NULL) { 640 dbg("%s: alloc for endpoint %d failed.", __FUNCTION__, endpoint); 641 return NULL; 642 } 643 644 /* Fill URB using supplied data. */ 645 usb_fill_bulk_urb(urb, serial->dev, 646 usb_sndbulkpipe(serial->dev, endpoint) | dir, 647 buf, len, callback, ctx); 648 649 return urb; 650 } 651 652 /* Setup urbs */ 653 static void option_setup_urbs(struct usb_serial *serial) 654 { 655 int i,j; 656 struct usb_serial_port *port; 657 struct option_port_private *portdata; 658 659 dbg("%s", __FUNCTION__); 660 661 for (i = 0; i < serial->num_ports; i++) { 662 port = serial->port[i]; 663 portdata = usb_get_serial_port_data(port); 664 665 /* Do indat endpoints first */ 666 for (j = 0; j < N_IN_URB; ++j) { 667 portdata->in_urbs[j] = option_setup_urb (serial, 668 port->bulk_in_endpointAddress, USB_DIR_IN, port, 669 portdata->in_buffer[j], IN_BUFLEN, option_indat_callback); 670 } 671 672 /* outdat endpoints */ 673 for (j = 0; j < N_OUT_URB; ++j) { 674 portdata->out_urbs[j] = option_setup_urb (serial, 675 port->bulk_out_endpointAddress, USB_DIR_OUT, port, 676 portdata->out_buffer[j], OUT_BUFLEN, option_outdat_callback); 677 } 678 } 679 } 680 681 static int option_send_setup(struct usb_serial_port *port) 682 { 683 struct usb_serial *serial = port->serial; 684 struct option_port_private *portdata; 685 686 dbg("%s", __FUNCTION__); 687 688 if (port->number != 0) 689 return 0; 690 691 portdata = usb_get_serial_port_data(port); 692 693 if (port->tty) { 694 int val = 0; 695 if (portdata->dtr_state) 696 val |= 0x01; 697 if (portdata->rts_state) 698 val |= 0x02; 699 700 return usb_control_msg(serial->dev, 701 usb_rcvctrlpipe(serial->dev, 0), 702 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT); 703 } 704 705 return 0; 706 } 707 708 static int option_startup(struct usb_serial *serial) 709 { 710 int i, err; 711 struct usb_serial_port *port; 712 struct option_port_private *portdata; 713 714 dbg("%s", __FUNCTION__); 715 716 /* Now setup per port private data */ 717 for (i = 0; i < serial->num_ports; i++) { 718 port = serial->port[i]; 719 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); 720 if (!portdata) { 721 dbg("%s: kmalloc for option_port_private (%d) failed!.", 722 __FUNCTION__, i); 723 return (1); 724 } 725 726 usb_set_serial_port_data(port, portdata); 727 728 if (! port->interrupt_in_urb) 729 continue; 730 err = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); 731 if (err) 732 dbg("%s: submit irq_in urb failed %d", 733 __FUNCTION__, err); 734 } 735 736 option_setup_urbs(serial); 737 738 return (0); 739 } 740 741 static void option_shutdown(struct usb_serial *serial) 742 { 743 int i, j; 744 struct usb_serial_port *port; 745 struct option_port_private *portdata; 746 747 dbg("%s", __FUNCTION__); 748 749 /* Stop reading/writing urbs */ 750 for (i = 0; i < serial->num_ports; ++i) { 751 port = serial->port[i]; 752 portdata = usb_get_serial_port_data(port); 753 for (j = 0; j < N_IN_URB; j++) 754 usb_kill_urb(portdata->in_urbs[j]); 755 for (j = 0; j < N_OUT_URB; j++) 756 usb_kill_urb(portdata->out_urbs[j]); 757 } 758 759 /* Now free them */ 760 for (i = 0; i < serial->num_ports; ++i) { 761 port = serial->port[i]; 762 portdata = usb_get_serial_port_data(port); 763 764 for (j = 0; j < N_IN_URB; j++) { 765 if (portdata->in_urbs[j]) { 766 usb_free_urb(portdata->in_urbs[j]); 767 portdata->in_urbs[j] = NULL; 768 } 769 } 770 for (j = 0; j < N_OUT_URB; j++) { 771 if (portdata->out_urbs[j]) { 772 usb_free_urb(portdata->out_urbs[j]); 773 portdata->out_urbs[j] = NULL; 774 } 775 } 776 } 777 778 /* Now free per port private data */ 779 for (i = 0; i < serial->num_ports; i++) { 780 port = serial->port[i]; 781 kfree(usb_get_serial_port_data(port)); 782 } 783 } 784 785 MODULE_AUTHOR(DRIVER_AUTHOR); 786 MODULE_DESCRIPTION(DRIVER_DESC); 787 MODULE_VERSION(DRIVER_VERSION); 788 MODULE_LICENSE("GPL"); 789 790 #ifdef CONFIG_USB_DEBUG 791 module_param(debug, bool, S_IRUGO | S_IWUSR); 792 MODULE_PARM_DESC(debug, "Debug messages"); 793 #endif 794 795