1/****************************************************************************** 2 * cxacru.c - driver for USB ADSL modems based on 3 * Conexant AccessRunner chipset 4 * 5 * Copyright (C) 2004 David Woodhouse, Duncan Sands, Roman Kagan 6 * Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru) 7 * Copyright (C) 2007 Simon Arlott 8 * Copyright (C) 2009 Simon Arlott 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the Free 12 * Software Foundation; either version 2 of the License, or (at your option) 13 * any later version. 14 * 15 * This program is distributed in the hope that it will be useful, but WITHOUT 16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 18 * more details. 19 * 20 * You should have received a copy of the GNU General Public License along with 21 * this program; if not, write to the Free Software Foundation, Inc., 59 22 * Temple Place - Suite 330, Boston, MA 02111-1307, USA. 23 * 24 ******************************************************************************/ 25 26/* 27 * Credit is due for Josep Comas, who created the original patch to speedtch.c 28 * to support the different padding used by the AccessRunner (now generalized 29 * into usbatm), and the userspace firmware loading utility. 30 */ 31 32#include <linux/module.h> 33#include <linux/moduleparam.h> 34#include <linux/kernel.h> 35#include <linux/timer.h> 36#include <linux/errno.h> 37#include <linux/slab.h> 38#include <linux/device.h> 39#include <linux/firmware.h> 40#include <linux/mutex.h> 41#include <asm/unaligned.h> 42 43#include "usbatm.h" 44 45#define DRIVER_AUTHOR "Roman Kagan, David Woodhouse, Duncan Sands, Simon Arlott" 46#define DRIVER_VERSION "0.4" 47#define DRIVER_DESC "Conexant AccessRunner ADSL USB modem driver" 48 49static const char cxacru_driver_name[] = "cxacru"; 50 51#define CXACRU_EP_CMD 0x01 /* Bulk/interrupt in/out */ 52#define CXACRU_EP_DATA 0x02 /* Bulk in/out */ 53 54#define CMD_PACKET_SIZE 64 /* Should be maxpacket(ep)? */ 55#define CMD_MAX_CONFIG ((CMD_PACKET_SIZE / 4 - 1) / 2) 56 57/* Addresses */ 58#define PLLFCLK_ADDR 0x00350068 59#define PLLBCLK_ADDR 0x0035006c 60#define SDRAMEN_ADDR 0x00350010 61#define FW_ADDR 0x00801000 62#define BR_ADDR 0x00180600 63#define SIG_ADDR 0x00180500 64#define BR_STACK_ADDR 0x00187f10 65 66/* Values */ 67#define SDRAM_ENA 0x1 68 69#define CMD_TIMEOUT 2000 /* msecs */ 70#define POLL_INTERVAL 1 /* secs */ 71 72/* commands for interaction with the modem through the control channel before 73 * firmware is loaded */ 74enum cxacru_fw_request { 75 FW_CMD_ERR, 76 FW_GET_VER, 77 FW_READ_MEM, 78 FW_WRITE_MEM, 79 FW_RMW_MEM, 80 FW_CHECKSUM_MEM, 81 FW_GOTO_MEM, 82}; 83 84/* commands for interaction with the modem through the control channel once 85 * firmware is loaded */ 86enum cxacru_cm_request { 87 CM_REQUEST_UNDEFINED = 0x80, 88 CM_REQUEST_TEST, 89 CM_REQUEST_CHIP_GET_MAC_ADDRESS, 90 CM_REQUEST_CHIP_GET_DP_VERSIONS, 91 CM_REQUEST_CHIP_ADSL_LINE_START, 92 CM_REQUEST_CHIP_ADSL_LINE_STOP, 93 CM_REQUEST_CHIP_ADSL_LINE_GET_STATUS, 94 CM_REQUEST_CHIP_ADSL_LINE_GET_SPEED, 95 CM_REQUEST_CARD_INFO_GET, 96 CM_REQUEST_CARD_DATA_GET, 97 CM_REQUEST_CARD_DATA_SET, 98 CM_REQUEST_COMMAND_HW_IO, 99 CM_REQUEST_INTERFACE_HW_IO, 100 CM_REQUEST_CARD_SERIAL_DATA_PATH_GET, 101 CM_REQUEST_CARD_SERIAL_DATA_PATH_SET, 102 CM_REQUEST_CARD_CONTROLLER_VERSION_GET, 103 CM_REQUEST_CARD_GET_STATUS, 104 CM_REQUEST_CARD_GET_MAC_ADDRESS, 105 CM_REQUEST_CARD_GET_DATA_LINK_STATUS, 106 CM_REQUEST_MAX, 107}; 108 109/* commands for interaction with the flash memory 110 * 111 * read: response is the contents of the first 60 bytes of flash memory 112 * write: request contains the 60 bytes of data to write to flash memory 113 * response is the contents of the first 60 bytes of flash memory 114 * 115 * layout: PP PP VV VV MM MM MM MM MM MM ?? ?? SS SS SS SS SS SS SS SS 116 * SS SS SS SS SS SS SS SS 00 00 00 00 00 00 00 00 00 00 00 00 117 * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 118 * 119 * P: le16 USB Product ID 120 * V: le16 USB Vendor ID 121 * M: be48 MAC Address 122 * S: le16 ASCII Serial Number 123 */ 124enum cxacru_cm_flash { 125 CM_FLASH_READ = 0xa1, 126 CM_FLASH_WRITE = 0xa2 127}; 128 129/* reply codes to the commands above */ 130enum cxacru_cm_status { 131 CM_STATUS_UNDEFINED, 132 CM_STATUS_SUCCESS, 133 CM_STATUS_ERROR, 134 CM_STATUS_UNSUPPORTED, 135 CM_STATUS_UNIMPLEMENTED, 136 CM_STATUS_PARAMETER_ERROR, 137 CM_STATUS_DBG_LOOPBACK, 138 CM_STATUS_MAX, 139}; 140 141/* indices into CARD_INFO_GET return array */ 142enum cxacru_info_idx { 143 CXINF_DOWNSTREAM_RATE, 144 CXINF_UPSTREAM_RATE, 145 CXINF_LINK_STATUS, 146 CXINF_LINE_STATUS, 147 CXINF_MAC_ADDRESS_HIGH, 148 CXINF_MAC_ADDRESS_LOW, 149 CXINF_UPSTREAM_SNR_MARGIN, 150 CXINF_DOWNSTREAM_SNR_MARGIN, 151 CXINF_UPSTREAM_ATTENUATION, 152 CXINF_DOWNSTREAM_ATTENUATION, 153 CXINF_TRANSMITTER_POWER, 154 CXINF_UPSTREAM_BITS_PER_FRAME, 155 CXINF_DOWNSTREAM_BITS_PER_FRAME, 156 CXINF_STARTUP_ATTEMPTS, 157 CXINF_UPSTREAM_CRC_ERRORS, 158 CXINF_DOWNSTREAM_CRC_ERRORS, 159 CXINF_UPSTREAM_FEC_ERRORS, 160 CXINF_DOWNSTREAM_FEC_ERRORS, 161 CXINF_UPSTREAM_HEC_ERRORS, 162 CXINF_DOWNSTREAM_HEC_ERRORS, 163 CXINF_LINE_STARTABLE, 164 CXINF_MODULATION, 165 CXINF_ADSL_HEADEND, 166 CXINF_ADSL_HEADEND_ENVIRONMENT, 167 CXINF_CONTROLLER_VERSION, 168 /* dunno what the missing two mean */ 169 CXINF_MAX = 0x1c, 170}; 171 172enum cxacru_poll_state { 173 CXPOLL_STOPPING, 174 CXPOLL_STOPPED, 175 CXPOLL_POLLING, 176 CXPOLL_SHUTDOWN 177}; 178 179struct cxacru_modem_type { 180 u32 pll_f_clk; 181 u32 pll_b_clk; 182 int boot_rom_patch; 183}; 184 185struct cxacru_data { 186 struct usbatm_data *usbatm; 187 188 const struct cxacru_modem_type *modem_type; 189 190 int line_status; 191 struct mutex adsl_state_serialize; 192 int adsl_status; 193 struct delayed_work poll_work; 194 u32 card_info[CXINF_MAX]; 195 struct mutex poll_state_serialize; 196 enum cxacru_poll_state poll_state; 197 198 /* contol handles */ 199 struct mutex cm_serialize; 200 u8 *rcv_buf; 201 u8 *snd_buf; 202 struct urb *rcv_urb; 203 struct urb *snd_urb; 204 struct completion rcv_done; 205 struct completion snd_done; 206}; 207 208static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, 209 u8 *wdata, int wsize, u8 *rdata, int rsize); 210static void cxacru_poll_status(struct work_struct *work); 211 212/* Card info exported through sysfs */ 213#define CXACRU__ATTR_INIT(_name) \ 214static DEVICE_ATTR(_name, S_IRUGO, cxacru_sysfs_show_##_name, NULL) 215 216#define CXACRU_CMD_INIT(_name) \ 217static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \ 218 cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name) 219 220#define CXACRU_SET_INIT(_name) \ 221static DEVICE_ATTR(_name, S_IWUSR, \ 222 NULL, cxacru_sysfs_store_##_name) 223 224#define CXACRU_ATTR_INIT(_value, _type, _name) \ 225static ssize_t cxacru_sysfs_show_##_name(struct device *dev, \ 226 struct device_attribute *attr, char *buf) \ 227{ \ 228 struct cxacru_data *instance = to_usbatm_driver_data(\ 229 to_usb_interface(dev)); \ 230\ 231 if (instance == NULL) \ 232 return -ENODEV; \ 233\ 234 return cxacru_sysfs_showattr_##_type(instance->card_info[_value], buf); \ 235} \ 236CXACRU__ATTR_INIT(_name) 237 238#define CXACRU_ATTR_CREATE(_v, _t, _name) CXACRU_DEVICE_CREATE_FILE(_name) 239#define CXACRU_CMD_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) 240#define CXACRU_SET_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) 241#define CXACRU__ATTR_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) 242 243#define CXACRU_ATTR_REMOVE(_v, _t, _name) CXACRU_DEVICE_REMOVE_FILE(_name) 244#define CXACRU_CMD_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) 245#define CXACRU_SET_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) 246#define CXACRU__ATTR_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) 247 248static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf) 249{ 250 return snprintf(buf, PAGE_SIZE, "%u\n", value); 251} 252 253static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf) 254{ 255 return snprintf(buf, PAGE_SIZE, "%d\n", value); 256} 257 258static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf) 259{ 260 if (likely(value >= 0)) { 261 return snprintf(buf, PAGE_SIZE, "%u.%02u\n", 262 value / 100, value % 100); 263 } else { 264 value = -value; 265 return snprintf(buf, PAGE_SIZE, "-%u.%02u\n", 266 value / 100, value % 100); 267 } 268} 269 270static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf) 271{ 272 static char *str[] = { "no", "yes" }; 273 if (unlikely(value >= ARRAY_SIZE(str))) 274 return snprintf(buf, PAGE_SIZE, "%u\n", value); 275 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 276} 277 278static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf) 279{ 280 static char *str[] = { NULL, "not connected", "connected", "lost" }; 281 if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL)) 282 return snprintf(buf, PAGE_SIZE, "%u\n", value); 283 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 284} 285 286static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf) 287{ 288 static char *str[] = { "down", "attempting to activate", 289 "training", "channel analysis", "exchange", "up", 290 "waiting", "initialising" 291 }; 292 if (unlikely(value >= ARRAY_SIZE(str))) 293 return snprintf(buf, PAGE_SIZE, "%u\n", value); 294 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 295} 296 297static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf) 298{ 299 static char *str[] = { 300 "", 301 "ANSI T1.413", 302 "ITU-T G.992.1 (G.DMT)", 303 "ITU-T G.992.2 (G.LITE)" 304 }; 305 if (unlikely(value >= ARRAY_SIZE(str))) 306 return snprintf(buf, PAGE_SIZE, "%u\n", value); 307 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 308} 309 310/* 311 * This could use MAC_ADDRESS_HIGH and MAC_ADDRESS_LOW, but since 312 * this data is already in atm_dev there's no point. 313 * 314 * MAC_ADDRESS_HIGH = 0x????5544 315 * MAC_ADDRESS_LOW = 0x33221100 316 * Where 00-55 are bytes 0-5 of the MAC. 317 */ 318static ssize_t cxacru_sysfs_show_mac_address(struct device *dev, 319 struct device_attribute *attr, char *buf) 320{ 321 struct cxacru_data *instance = to_usbatm_driver_data( 322 to_usb_interface(dev)); 323 324 if (instance == NULL || instance->usbatm->atm_dev == NULL) 325 return -ENODEV; 326 327 return snprintf(buf, PAGE_SIZE, "%pM\n", 328 instance->usbatm->atm_dev->esi); 329} 330 331static ssize_t cxacru_sysfs_show_adsl_state(struct device *dev, 332 struct device_attribute *attr, char *buf) 333{ 334 static char *str[] = { "running", "stopped" }; 335 struct cxacru_data *instance = to_usbatm_driver_data( 336 to_usb_interface(dev)); 337 u32 value; 338 339 if (instance == NULL) 340 return -ENODEV; 341 342 value = instance->card_info[CXINF_LINE_STARTABLE]; 343 if (unlikely(value >= ARRAY_SIZE(str))) 344 return snprintf(buf, PAGE_SIZE, "%u\n", value); 345 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 346} 347 348static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev, 349 struct device_attribute *attr, const char *buf, size_t count) 350{ 351 struct cxacru_data *instance = to_usbatm_driver_data( 352 to_usb_interface(dev)); 353 int ret; 354 int poll = -1; 355 char str_cmd[8]; 356 int len = strlen(buf); 357 358 if (!capable(CAP_NET_ADMIN)) 359 return -EACCES; 360 361 ret = sscanf(buf, "%7s", str_cmd); 362 if (ret != 1) 363 return -EINVAL; 364 ret = 0; 365 366 if (instance == NULL) 367 return -ENODEV; 368 369 if (mutex_lock_interruptible(&instance->adsl_state_serialize)) 370 return -ERESTARTSYS; 371 372 if (!strcmp(str_cmd, "stop") || !strcmp(str_cmd, "restart")) { 373 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_STOP, NULL, 0, NULL, 0); 374 if (ret < 0) { 375 atm_err(instance->usbatm, "change adsl state:" 376 " CHIP_ADSL_LINE_STOP returned %d\n", ret); 377 378 ret = -EIO; 379 } else { 380 ret = len; 381 poll = CXPOLL_STOPPED; 382 } 383 } 384 385 /* Line status is only updated every second 386 * and the device appears to only react to 387 * START/STOP every second too. Wait 1.5s to 388 * be sure that restart will have an effect. */ 389 if (!strcmp(str_cmd, "restart")) 390 msleep(1500); 391 392 if (!strcmp(str_cmd, "start") || !strcmp(str_cmd, "restart")) { 393 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0); 394 if (ret < 0) { 395 atm_err(instance->usbatm, "change adsl state:" 396 " CHIP_ADSL_LINE_START returned %d\n", ret); 397 398 ret = -EIO; 399 } else { 400 ret = len; 401 poll = CXPOLL_POLLING; 402 } 403 } 404 405 if (!strcmp(str_cmd, "poll")) { 406 ret = len; 407 poll = CXPOLL_POLLING; 408 } 409 410 if (ret == 0) { 411 ret = -EINVAL; 412 poll = -1; 413 } 414 415 if (poll == CXPOLL_POLLING) { 416 mutex_lock(&instance->poll_state_serialize); 417 switch (instance->poll_state) { 418 case CXPOLL_STOPPED: 419 /* start polling */ 420 instance->poll_state = CXPOLL_POLLING; 421 break; 422 423 case CXPOLL_STOPPING: 424 /* abort stop request */ 425 instance->poll_state = CXPOLL_POLLING; 426 case CXPOLL_POLLING: 427 case CXPOLL_SHUTDOWN: 428 /* don't start polling */ 429 poll = -1; 430 } 431 mutex_unlock(&instance->poll_state_serialize); 432 } else if (poll == CXPOLL_STOPPED) { 433 mutex_lock(&instance->poll_state_serialize); 434 /* request stop */ 435 if (instance->poll_state == CXPOLL_POLLING) 436 instance->poll_state = CXPOLL_STOPPING; 437 mutex_unlock(&instance->poll_state_serialize); 438 } 439 440 mutex_unlock(&instance->adsl_state_serialize); 441 442 if (poll == CXPOLL_POLLING) 443 cxacru_poll_status(&instance->poll_work.work); 444 445 return ret; 446} 447 448/* CM_REQUEST_CARD_DATA_GET times out, so no show attribute */ 449 450static ssize_t cxacru_sysfs_store_adsl_config(struct device *dev, 451 struct device_attribute *attr, const char *buf, size_t count) 452{ 453 struct cxacru_data *instance = to_usbatm_driver_data( 454 to_usb_interface(dev)); 455 int len = strlen(buf); 456 int ret, pos, num; 457 __le32 data[CMD_PACKET_SIZE / 4]; 458 459 if (!capable(CAP_NET_ADMIN)) 460 return -EACCES; 461 462 if (instance == NULL) 463 return -ENODEV; 464 465 pos = 0; 466 num = 0; 467 while (pos < len) { 468 int tmp; 469 u32 index; 470 u32 value; 471 472 ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp); 473 if (ret < 2) 474 return -EINVAL; 475 if (index < 0 || index > 0x7f) 476 return -EINVAL; 477 pos += tmp; 478 479 /* skip trailing newline */ 480 if (buf[pos] == '\n' && pos == len-1) 481 pos++; 482 483 data[num * 2 + 1] = cpu_to_le32(index); 484 data[num * 2 + 2] = cpu_to_le32(value); 485 num++; 486 487 /* send config values when data buffer is full 488 * or no more data 489 */ 490 if (pos >= len || num >= CMD_MAX_CONFIG) { 491 char log[CMD_MAX_CONFIG * 12 + 1]; /* %02x=%08x */ 492 493 data[0] = cpu_to_le32(num); 494 ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET, 495 (u8 *) data, 4 + num * 8, NULL, 0); 496 if (ret < 0) { 497 atm_err(instance->usbatm, 498 "set card data returned %d\n", ret); 499 return -EIO; 500 } 501 502 for (tmp = 0; tmp < num; tmp++) 503 snprintf(log + tmp*12, 13, " %02x=%08x", 504 le32_to_cpu(data[tmp * 2 + 1]), 505 le32_to_cpu(data[tmp * 2 + 2])); 506 atm_info(instance->usbatm, "config%s\n", log); 507 num = 0; 508 } 509 } 510 511 return len; 512} 513 514/* 515 * All device attributes are included in CXACRU_ALL_FILES 516 * so that the same list can be used multiple times: 517 * INIT (define the device attributes) 518 * CREATE (create all the device files) 519 * REMOVE (remove all the device files) 520 * 521 * With the last two being defined as needed in the functions 522 * they are used in before calling CXACRU_ALL_FILES() 523 */ 524#define CXACRU_ALL_FILES(_action) \ 525CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_RATE, u32, downstream_rate); \ 526CXACRU_ATTR_##_action(CXINF_UPSTREAM_RATE, u32, upstream_rate); \ 527CXACRU_ATTR_##_action(CXINF_LINK_STATUS, LINK, link_status); \ 528CXACRU_ATTR_##_action(CXINF_LINE_STATUS, LINE, line_status); \ 529CXACRU__ATTR_##_action( mac_address); \ 530CXACRU_ATTR_##_action(CXINF_UPSTREAM_SNR_MARGIN, dB, upstream_snr_margin); \ 531CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_SNR_MARGIN, dB, downstream_snr_margin); \ 532CXACRU_ATTR_##_action(CXINF_UPSTREAM_ATTENUATION, dB, upstream_attenuation); \ 533CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_ATTENUATION, dB, downstream_attenuation); \ 534CXACRU_ATTR_##_action(CXINF_TRANSMITTER_POWER, s8, transmitter_power); \ 535CXACRU_ATTR_##_action(CXINF_UPSTREAM_BITS_PER_FRAME, u32, upstream_bits_per_frame); \ 536CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_BITS_PER_FRAME, u32, downstream_bits_per_frame); \ 537CXACRU_ATTR_##_action(CXINF_STARTUP_ATTEMPTS, u32, startup_attempts); \ 538CXACRU_ATTR_##_action(CXINF_UPSTREAM_CRC_ERRORS, u32, upstream_crc_errors); \ 539CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_CRC_ERRORS, u32, downstream_crc_errors); \ 540CXACRU_ATTR_##_action(CXINF_UPSTREAM_FEC_ERRORS, u32, upstream_fec_errors); \ 541CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_FEC_ERRORS, u32, downstream_fec_errors); \ 542CXACRU_ATTR_##_action(CXINF_UPSTREAM_HEC_ERRORS, u32, upstream_hec_errors); \ 543CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_HEC_ERRORS, u32, downstream_hec_errors); \ 544CXACRU_ATTR_##_action(CXINF_LINE_STARTABLE, bool, line_startable); \ 545CXACRU_ATTR_##_action(CXINF_MODULATION, MODU, modulation); \ 546CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND, u32, adsl_headend); \ 547CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT, u32, adsl_headend_environment); \ 548CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION, u32, adsl_controller_version); \ 549CXACRU_CMD_##_action( adsl_state); \ 550CXACRU_SET_##_action( adsl_config); 551 552CXACRU_ALL_FILES(INIT); 553 554/* the following three functions are stolen from drivers/usb/core/message.c */ 555static void cxacru_blocking_completion(struct urb *urb) 556{ 557 complete(urb->context); 558} 559 560static void cxacru_timeout_kill(unsigned long data) 561{ 562 usb_unlink_urb((struct urb *) data); 563} 564 565static int cxacru_start_wait_urb(struct urb *urb, struct completion *done, 566 int *actual_length) 567{ 568 struct timer_list timer; 569 570 init_timer(&timer); 571 timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT); 572 timer.data = (unsigned long) urb; 573 timer.function = cxacru_timeout_kill; 574 add_timer(&timer); 575 wait_for_completion(done); 576 del_timer_sync(&timer); 577 578 if (actual_length) 579 *actual_length = urb->actual_length; 580 return urb->status; /* must read status after completion */ 581} 582 583static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, 584 u8 *wdata, int wsize, u8 *rdata, int rsize) 585{ 586 int ret, actlen; 587 int offb, offd; 588 const int stride = CMD_PACKET_SIZE - 4; 589 u8 *wbuf = instance->snd_buf; 590 u8 *rbuf = instance->rcv_buf; 591 int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE; 592 int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE; 593 594 if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) { 595 if (printk_ratelimit()) 596 usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n", 597 wbuflen, rbuflen); 598 ret = -ENOMEM; 599 goto err; 600 } 601 602 mutex_lock(&instance->cm_serialize); 603 604 /* submit reading urb before the writing one */ 605 init_completion(&instance->rcv_done); 606 ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL); 607 if (ret < 0) { 608 if (printk_ratelimit()) 609 usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n", 610 cm, ret); 611 goto fail; 612 } 613 614 memset(wbuf, 0, wbuflen); 615 /* handle wsize == 0 */ 616 wbuf[0] = cm; 617 for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) { 618 wbuf[offb] = cm; 619 memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd)); 620 } 621 622 instance->snd_urb->transfer_buffer_length = wbuflen; 623 init_completion(&instance->snd_done); 624 ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL); 625 if (ret < 0) { 626 if (printk_ratelimit()) 627 usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n", 628 cm, ret); 629 goto fail; 630 } 631 632 ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL); 633 if (ret < 0) { 634 if (printk_ratelimit()) 635 usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret); 636 goto fail; 637 } 638 639 ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen); 640 if (ret < 0) { 641 if (printk_ratelimit()) 642 usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret); 643 goto fail; 644 } 645 if (actlen % CMD_PACKET_SIZE || !actlen) { 646 if (printk_ratelimit()) 647 usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n", 648 cm, actlen); 649 ret = -EIO; 650 goto fail; 651 } 652 653 /* check the return status and copy the data to the output buffer, if needed */ 654 for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) { 655 if (rbuf[offb] != cm) { 656 if (printk_ratelimit()) 657 usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n", 658 rbuf[offb], cm); 659 ret = -EIO; 660 goto fail; 661 } 662 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) { 663 if (printk_ratelimit()) 664 usb_err(instance->usbatm, "response to cm %#x failed: %#x\n", 665 cm, rbuf[offb + 1]); 666 ret = -EIO; 667 goto fail; 668 } 669 if (offd >= rsize) 670 break; 671 memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd)); 672 offd += stride; 673 } 674 675 ret = offd; 676 usb_dbg(instance->usbatm, "cm %#x\n", cm); 677fail: 678 mutex_unlock(&instance->cm_serialize); 679err: 680 return ret; 681} 682 683static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm, 684 u32 *data, int size) 685{ 686 int ret, len; 687 __le32 *buf; 688 int offb; 689 unsigned int offd; 690 const int stride = CMD_PACKET_SIZE / (4 * 2) - 1; 691 int buflen = ((size - 1) / stride + 1 + size * 2) * 4; 692 693 buf = kmalloc(buflen, GFP_KERNEL); 694 if (!buf) 695 return -ENOMEM; 696 697 ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen); 698 if (ret < 0) 699 goto cleanup; 700 701 /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */ 702 len = ret / 4; 703 for (offb = 0; offb < len; ) { 704 int l = le32_to_cpu(buf[offb++]); 705 if (l < 0 || l > stride || l > (len - offb) / 2) { 706 if (printk_ratelimit()) 707 usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n", 708 cm, l); 709 ret = -EIO; 710 goto cleanup; 711 } 712 while (l--) { 713 offd = le32_to_cpu(buf[offb++]); 714 if (offd >= size) { 715 if (printk_ratelimit()) 716 usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n", 717 offd, cm); 718 ret = -EIO; 719 goto cleanup; 720 } 721 data[offd] = le32_to_cpu(buf[offb++]); 722 } 723 } 724 725 ret = 0; 726 727cleanup: 728 kfree(buf); 729 return ret; 730} 731 732static int cxacru_card_status(struct cxacru_data *instance) 733{ 734 int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); 735 if (ret < 0) { /* firmware not loaded */ 736 usb_dbg(instance->usbatm, "cxacru_adsl_start: CARD_GET_STATUS returned %d\n", ret); 737 return ret; 738 } 739 return 0; 740} 741 742static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance, 743 struct atm_dev *atm_dev) 744{ 745 struct usb_interface *intf = usbatm_instance->usb_intf; 746 747 #define CXACRU_DEVICE_REMOVE_FILE(_name) \ 748 device_remove_file(&intf->dev, &dev_attr_##_name); 749 CXACRU_ALL_FILES(REMOVE); 750 #undef CXACRU_DEVICE_REMOVE_FILE 751} 752 753static int cxacru_atm_start(struct usbatm_data *usbatm_instance, 754 struct atm_dev *atm_dev) 755{ 756 struct cxacru_data *instance = usbatm_instance->driver_data; 757 struct usb_interface *intf = usbatm_instance->usb_intf; 758 int ret; 759 int start_polling = 1; 760 761 dev_dbg(&intf->dev, "%s\n", __func__); 762 763 /* Read MAC address */ 764 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0, 765 atm_dev->esi, sizeof(atm_dev->esi)); 766 if (ret < 0) { 767 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret); 768 return ret; 769 } 770 771 #define CXACRU_DEVICE_CREATE_FILE(_name) \ 772 ret = device_create_file(&intf->dev, &dev_attr_##_name); \ 773 if (unlikely(ret)) \ 774 goto fail_sysfs; 775 CXACRU_ALL_FILES(CREATE); 776 #undef CXACRU_DEVICE_CREATE_FILE 777 778 /* start ADSL */ 779 mutex_lock(&instance->adsl_state_serialize); 780 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0); 781 if (ret < 0) 782 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret); 783 784 /* Start status polling */ 785 mutex_lock(&instance->poll_state_serialize); 786 switch (instance->poll_state) { 787 case CXPOLL_STOPPED: 788 /* start polling */ 789 instance->poll_state = CXPOLL_POLLING; 790 break; 791 792 case CXPOLL_STOPPING: 793 /* abort stop request */ 794 instance->poll_state = CXPOLL_POLLING; 795 case CXPOLL_POLLING: 796 case CXPOLL_SHUTDOWN: 797 /* don't start polling */ 798 start_polling = 0; 799 } 800 mutex_unlock(&instance->poll_state_serialize); 801 mutex_unlock(&instance->adsl_state_serialize); 802 803 printk(KERN_INFO "%s%d: %s %pM\n", atm_dev->type, atm_dev->number, 804 usbatm_instance->description, atm_dev->esi); 805 806 if (start_polling) 807 cxacru_poll_status(&instance->poll_work.work); 808 return 0; 809 810fail_sysfs: 811 usb_err(usbatm_instance, "cxacru_atm_start: device_create_file failed (%d)\n", ret); 812 cxacru_remove_device_files(usbatm_instance, atm_dev); 813 return ret; 814} 815 816static void cxacru_poll_status(struct work_struct *work) 817{ 818 struct cxacru_data *instance = 819 container_of(work, struct cxacru_data, poll_work.work); 820 u32 buf[CXINF_MAX] = {}; 821 struct usbatm_data *usbatm = instance->usbatm; 822 struct atm_dev *atm_dev = usbatm->atm_dev; 823 int keep_polling = 1; 824 int ret; 825 826 ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX); 827 if (ret < 0) { 828 if (ret != -ESHUTDOWN) 829 atm_warn(usbatm, "poll status: error %d\n", ret); 830 831 mutex_lock(&instance->poll_state_serialize); 832 if (instance->poll_state != CXPOLL_SHUTDOWN) { 833 instance->poll_state = CXPOLL_STOPPED; 834 835 if (ret != -ESHUTDOWN) 836 atm_warn(usbatm, "polling disabled, set adsl_state" 837 " to 'start' or 'poll' to resume\n"); 838 } 839 mutex_unlock(&instance->poll_state_serialize); 840 goto reschedule; 841 } 842 843 memcpy(instance->card_info, buf, sizeof(instance->card_info)); 844 845 if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) { 846 instance->adsl_status = buf[CXINF_LINE_STARTABLE]; 847 848 switch (instance->adsl_status) { 849 case 0: 850 atm_printk(KERN_INFO, usbatm, "ADSL state: running\n"); 851 break; 852 853 case 1: 854 atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n"); 855 break; 856 857 default: 858 atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status); 859 break; 860 } 861 } 862 863 if (instance->line_status == buf[CXINF_LINE_STATUS]) 864 goto reschedule; 865 866 instance->line_status = buf[CXINF_LINE_STATUS]; 867 switch (instance->line_status) { 868 case 0: 869 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 870 atm_info(usbatm, "ADSL line: down\n"); 871 break; 872 873 case 1: 874 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 875 atm_info(usbatm, "ADSL line: attempting to activate\n"); 876 break; 877 878 case 2: 879 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 880 atm_info(usbatm, "ADSL line: training\n"); 881 break; 882 883 case 3: 884 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 885 atm_info(usbatm, "ADSL line: channel analysis\n"); 886 break; 887 888 case 4: 889 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 890 atm_info(usbatm, "ADSL line: exchange\n"); 891 break; 892 893 case 5: 894 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424; 895 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_FOUND); 896 897 atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n", 898 buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]); 899 break; 900 901 case 6: 902 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 903 atm_info(usbatm, "ADSL line: waiting\n"); 904 break; 905 906 case 7: 907 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 908 atm_info(usbatm, "ADSL line: initializing\n"); 909 break; 910 911 default: 912 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_UNKNOWN); 913 atm_info(usbatm, "Unknown line state %02x\n", instance->line_status); 914 break; 915 } 916reschedule: 917 918 mutex_lock(&instance->poll_state_serialize); 919 if (instance->poll_state == CXPOLL_STOPPING && 920 instance->adsl_status == 1 && /* stopped */ 921 instance->line_status == 0) /* down */ 922 instance->poll_state = CXPOLL_STOPPED; 923 924 if (instance->poll_state == CXPOLL_STOPPED) 925 keep_polling = 0; 926 mutex_unlock(&instance->poll_state_serialize); 927 928 if (keep_polling) 929 schedule_delayed_work(&instance->poll_work, 930 round_jiffies_relative(POLL_INTERVAL*HZ)); 931} 932 933static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw, 934 u8 code1, u8 code2, u32 addr, const u8 *data, int size) 935{ 936 int ret; 937 u8 *buf; 938 int offd, offb; 939 const int stride = CMD_PACKET_SIZE - 8; 940 941 buf = (u8 *) __get_free_page(GFP_KERNEL); 942 if (!buf) 943 return -ENOMEM; 944 945 offb = offd = 0; 946 do { 947 int l = min_t(int, stride, size - offd); 948 buf[offb++] = fw; 949 buf[offb++] = l; 950 buf[offb++] = code1; 951 buf[offb++] = code2; 952 put_unaligned(cpu_to_le32(addr), (__le32 *)(buf + offb)); 953 offb += 4; 954 addr += l; 955 if (l) 956 memcpy(buf + offb, data + offd, l); 957 if (l < stride) 958 memset(buf + offb + l, 0, stride - l); 959 offb += stride; 960 offd += stride; 961 if ((offb >= PAGE_SIZE) || (offd >= size)) { 962 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), 963 buf, offb, NULL, CMD_TIMEOUT); 964 if (ret < 0) { 965 dev_dbg(&usb_dev->dev, "sending fw %#x failed\n", fw); 966 goto cleanup; 967 } 968 offb = 0; 969 } 970 } while (offd < size); 971 dev_dbg(&usb_dev->dev, "sent fw %#x\n", fw); 972 973 ret = 0; 974 975cleanup: 976 free_page((unsigned long) buf); 977 return ret; 978} 979 980static void cxacru_upload_firmware(struct cxacru_data *instance, 981 const struct firmware *fw, 982 const struct firmware *bp) 983{ 984 int ret; 985 struct usbatm_data *usbatm = instance->usbatm; 986 struct usb_device *usb_dev = usbatm->usb_dev; 987 __le16 signature[] = { usb_dev->descriptor.idVendor, 988 usb_dev->descriptor.idProduct }; 989 __le32 val; 990 991 usb_dbg(usbatm, "%s\n", __func__); 992 993 /* FirmwarePllFClkValue */ 994 val = cpu_to_le32(instance->modem_type->pll_f_clk); 995 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4); 996 if (ret) { 997 usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret); 998 return; 999 } 1000 1001 /* FirmwarePllBClkValue */ 1002 val = cpu_to_le32(instance->modem_type->pll_b_clk); 1003 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4); 1004 if (ret) { 1005 usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret); 1006 return; 1007 } 1008 1009 /* Enable SDRAM */ 1010 val = cpu_to_le32(SDRAM_ENA); 1011 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4); 1012 if (ret) { 1013 usb_err(usbatm, "Enable SDRAM failed: %d\n", ret); 1014 return; 1015 } 1016 1017 /* Firmware */ 1018 usb_info(usbatm, "loading firmware\n"); 1019 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size); 1020 if (ret) { 1021 usb_err(usbatm, "Firmware upload failed: %d\n", ret); 1022 return; 1023 } 1024 1025 /* Boot ROM patch */ 1026 if (instance->modem_type->boot_rom_patch) { 1027 usb_info(usbatm, "loading boot ROM patch\n"); 1028 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size); 1029 if (ret) { 1030 usb_err(usbatm, "Boot ROM patching failed: %d\n", ret); 1031 return; 1032 } 1033 } 1034 1035 /* Signature */ 1036 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4); 1037 if (ret) { 1038 usb_err(usbatm, "Signature storing failed: %d\n", ret); 1039 return; 1040 } 1041 1042 usb_info(usbatm, "starting device\n"); 1043 if (instance->modem_type->boot_rom_patch) { 1044 val = cpu_to_le32(BR_ADDR); 1045 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4); 1046 } else { 1047 ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0); 1048 } 1049 if (ret) { 1050 usb_err(usbatm, "Passing control to firmware failed: %d\n", ret); 1051 return; 1052 } 1053 1054 /* Delay to allow firmware to start up. */ 1055 msleep_interruptible(1000); 1056 1057 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD)); 1058 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD)); 1059 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA)); 1060 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA)); 1061 1062 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); 1063 if (ret < 0) { 1064 usb_err(usbatm, "modem failed to initialize: %d\n", ret); 1065 return; 1066 } 1067} 1068 1069static int cxacru_find_firmware(struct cxacru_data *instance, 1070 char *phase, const struct firmware **fw_p) 1071{ 1072 struct usbatm_data *usbatm = instance->usbatm; 1073 struct device *dev = &usbatm->usb_intf->dev; 1074 char buf[16]; 1075 1076 sprintf(buf, "cxacru-%s.bin", phase); 1077 usb_dbg(usbatm, "cxacru_find_firmware: looking for %s\n", buf); 1078 1079 if (request_firmware(fw_p, buf, dev)) { 1080 usb_dbg(usbatm, "no stage %s firmware found\n", phase); 1081 return -ENOENT; 1082 } 1083 1084 usb_info(usbatm, "found firmware %s\n", buf); 1085 1086 return 0; 1087} 1088 1089static int cxacru_heavy_init(struct usbatm_data *usbatm_instance, 1090 struct usb_interface *usb_intf) 1091{ 1092 const struct firmware *fw, *bp; 1093 struct cxacru_data *instance = usbatm_instance->driver_data; 1094 1095 int ret = cxacru_find_firmware(instance, "fw", &fw); 1096 if (ret) { 1097 usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n"); 1098 return ret; 1099 } 1100 1101 if (instance->modem_type->boot_rom_patch) { 1102 ret = cxacru_find_firmware(instance, "bp", &bp); 1103 if (ret) { 1104 usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n"); 1105 release_firmware(fw); 1106 return ret; 1107 } 1108 } 1109 1110 cxacru_upload_firmware(instance, fw, bp); 1111 1112 if (instance->modem_type->boot_rom_patch) 1113 release_firmware(bp); 1114 release_firmware(fw); 1115 1116 ret = cxacru_card_status(instance); 1117 if (ret) 1118 usb_dbg(usbatm_instance, "modem initialisation failed\n"); 1119 else 1120 usb_dbg(usbatm_instance, "done setting up the modem\n"); 1121 1122 return ret; 1123} 1124 1125static int cxacru_bind(struct usbatm_data *usbatm_instance, 1126 struct usb_interface *intf, const struct usb_device_id *id) 1127{ 1128 struct cxacru_data *instance; 1129 struct usb_device *usb_dev = interface_to_usbdev(intf); 1130 struct usb_host_endpoint *cmd_ep = usb_dev->ep_in[CXACRU_EP_CMD]; 1131 int ret; 1132 1133 /* instance init */ 1134 instance = kzalloc(sizeof(*instance), GFP_KERNEL); 1135 if (!instance) { 1136 usb_dbg(usbatm_instance, "cxacru_bind: no memory for instance data\n"); 1137 return -ENOMEM; 1138 } 1139 1140 instance->usbatm = usbatm_instance; 1141 instance->modem_type = (struct cxacru_modem_type *) id->driver_info; 1142 1143 mutex_init(&instance->poll_state_serialize); 1144 instance->poll_state = CXPOLL_STOPPED; 1145 instance->line_status = -1; 1146 instance->adsl_status = -1; 1147 1148 mutex_init(&instance->adsl_state_serialize); 1149 1150 instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL); 1151 if (!instance->rcv_buf) { 1152 usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_buf\n"); 1153 ret = -ENOMEM; 1154 goto fail; 1155 } 1156 instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL); 1157 if (!instance->snd_buf) { 1158 usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_buf\n"); 1159 ret = -ENOMEM; 1160 goto fail; 1161 } 1162 instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL); 1163 if (!instance->rcv_urb) { 1164 usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_urb\n"); 1165 ret = -ENOMEM; 1166 goto fail; 1167 } 1168 instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL); 1169 if (!instance->snd_urb) { 1170 usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_urb\n"); 1171 ret = -ENOMEM; 1172 goto fail; 1173 } 1174 1175 if (!cmd_ep) { 1176 usb_dbg(usbatm_instance, "cxacru_bind: no command endpoint\n"); 1177 ret = -ENODEV; 1178 goto fail; 1179 } 1180 1181 if ((cmd_ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1182 == USB_ENDPOINT_XFER_INT) { 1183 usb_fill_int_urb(instance->rcv_urb, 1184 usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD), 1185 instance->rcv_buf, PAGE_SIZE, 1186 cxacru_blocking_completion, &instance->rcv_done, 1); 1187 1188 usb_fill_int_urb(instance->snd_urb, 1189 usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD), 1190 instance->snd_buf, PAGE_SIZE, 1191 cxacru_blocking_completion, &instance->snd_done, 4); 1192 } else { 1193 usb_fill_bulk_urb(instance->rcv_urb, 1194 usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD), 1195 instance->rcv_buf, PAGE_SIZE, 1196 cxacru_blocking_completion, &instance->rcv_done); 1197 1198 usb_fill_bulk_urb(instance->snd_urb, 1199 usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), 1200 instance->snd_buf, PAGE_SIZE, 1201 cxacru_blocking_completion, &instance->snd_done); 1202 } 1203 1204 mutex_init(&instance->cm_serialize); 1205 1206 INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status); 1207 1208 usbatm_instance->driver_data = instance; 1209 1210 usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT); 1211 1212 return 0; 1213 1214 fail: 1215 free_page((unsigned long) instance->snd_buf); 1216 free_page((unsigned long) instance->rcv_buf); 1217 usb_free_urb(instance->snd_urb); 1218 usb_free_urb(instance->rcv_urb); 1219 kfree(instance); 1220 1221 return ret; 1222} 1223 1224static void cxacru_unbind(struct usbatm_data *usbatm_instance, 1225 struct usb_interface *intf) 1226{ 1227 struct cxacru_data *instance = usbatm_instance->driver_data; 1228 int is_polling = 1; 1229 1230 usb_dbg(usbatm_instance, "cxacru_unbind entered\n"); 1231 1232 if (!instance) { 1233 usb_dbg(usbatm_instance, "cxacru_unbind: NULL instance!\n"); 1234 return; 1235 } 1236 1237 mutex_lock(&instance->poll_state_serialize); 1238 BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN); 1239 1240 /* ensure that status polling continues unless 1241 * it has already stopped */ 1242 if (instance->poll_state == CXPOLL_STOPPED) 1243 is_polling = 0; 1244 1245 /* stop polling from being stopped or started */ 1246 instance->poll_state = CXPOLL_SHUTDOWN; 1247 mutex_unlock(&instance->poll_state_serialize); 1248 1249 if (is_polling) 1250 cancel_delayed_work_sync(&instance->poll_work); 1251 1252 usb_kill_urb(instance->snd_urb); 1253 usb_kill_urb(instance->rcv_urb); 1254 usb_free_urb(instance->snd_urb); 1255 usb_free_urb(instance->rcv_urb); 1256 1257 free_page((unsigned long) instance->snd_buf); 1258 free_page((unsigned long) instance->rcv_buf); 1259 1260 kfree(instance); 1261 1262 usbatm_instance->driver_data = NULL; 1263} 1264 1265static const struct cxacru_modem_type cxacru_cafe = { 1266 .pll_f_clk = 0x02d874df, 1267 .pll_b_clk = 0x0196a51a, 1268 .boot_rom_patch = 1, 1269}; 1270 1271static const struct cxacru_modem_type cxacru_cb00 = { 1272 .pll_f_clk = 0x5, 1273 .pll_b_clk = 0x3, 1274 .boot_rom_patch = 0, 1275}; 1276 1277static const struct usb_device_id cxacru_usb_ids[] = { 1278 { /* V = Conexant P = ADSL modem (Euphrates project) */ 1279 USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe 1280 }, 1281 { /* V = Conexant P = ADSL modem (Hasbani project) */ 1282 USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00 1283 }, 1284 { /* V = Conexant P = ADSL modem */ 1285 USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1286 }, 1287 { /* V = Conexant P = ADSL modem (Well PTI-800) */ 1288 USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00 1289 }, 1290 { /* V = Conexant P = ADSL modem */ 1291 USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00 1292 }, 1293 { /* V = Conexant P = ADSL modem (ZTE ZXDSL 852) */ 1294 USB_DEVICE(0x0572, 0xcb07), .driver_info = (unsigned long) &cxacru_cb00 1295 }, 1296 { /* V = Olitec P = ADSL modem version 2 */ 1297 USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe 1298 }, 1299 { /* V = Olitec P = ADSL modem version 3 */ 1300 USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00 1301 }, 1302 { /* V = Trust/Amigo Technology Co. P = AMX-CA86U */ 1303 USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe 1304 }, 1305 { /* V = Zoom P = 5510 */ 1306 USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00 1307 }, 1308 { /* V = Draytek P = Vigor 318 */ 1309 USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00 1310 }, 1311 { /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */ 1312 USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00 1313 }, 1314 { /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */ 1315 USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00 1316 }, 1317 { /* V = Aethra P = Starmodem UM1020 */ 1318 USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00 1319 }, 1320 { /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */ 1321 USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00 1322 }, 1323 { /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */ 1324 USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1325 }, 1326 { /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */ 1327 USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00 1328 }, 1329 {} 1330}; 1331 1332MODULE_DEVICE_TABLE(usb, cxacru_usb_ids); 1333 1334static struct usbatm_driver cxacru_driver = { 1335 .driver_name = cxacru_driver_name, 1336 .bind = cxacru_bind, 1337 .heavy_init = cxacru_heavy_init, 1338 .unbind = cxacru_unbind, 1339 .atm_start = cxacru_atm_start, 1340 .atm_stop = cxacru_remove_device_files, 1341 .bulk_in = CXACRU_EP_DATA, 1342 .bulk_out = CXACRU_EP_DATA, 1343 .rx_padding = 3, 1344 .tx_padding = 11, 1345}; 1346 1347static int cxacru_usb_probe(struct usb_interface *intf, 1348 const struct usb_device_id *id) 1349{ 1350 struct usb_device *usb_dev = interface_to_usbdev(intf); 1351 char buf[15]; 1352 1353 /* Avoid ADSL routers (cx82310_eth). 1354 * Abort if bDeviceClass is 0xff and iProduct is "USB NET CARD". 1355 */ 1356 if (usb_dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC 1357 && usb_string(usb_dev, usb_dev->descriptor.iProduct, 1358 buf, sizeof(buf)) > 0) { 1359 if (!strcmp(buf, "USB NET CARD")) { 1360 dev_info(&intf->dev, "ignoring cx82310_eth device\n"); 1361 return -ENODEV; 1362 } 1363 } 1364 1365 return usbatm_usb_probe(intf, id, &cxacru_driver); 1366} 1367 1368static struct usb_driver cxacru_usb_driver = { 1369 .name = cxacru_driver_name, 1370 .probe = cxacru_usb_probe, 1371 .disconnect = usbatm_usb_disconnect, 1372 .id_table = cxacru_usb_ids 1373}; 1374 1375module_usb_driver(cxacru_usb_driver); 1376 1377MODULE_AUTHOR(DRIVER_AUTHOR); 1378MODULE_DESCRIPTION(DRIVER_DESC); 1379MODULE_LICENSE("GPL"); 1380MODULE_VERSION(DRIVER_VERSION); 1381