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_DESC "Conexant AccessRunner ADSL USB modem driver" 47 48 static const char cxacru_driver_name[] = "cxacru"; 49 50 #define CXACRU_EP_CMD 0x01 /* Bulk/interrupt in/out */ 51 #define CXACRU_EP_DATA 0x02 /* Bulk in/out */ 52 53 #define CMD_PACKET_SIZE 64 /* Should be maxpacket(ep)? */ 54 #define CMD_MAX_CONFIG ((CMD_PACKET_SIZE / 4 - 1) / 2) 55 56 /* Addresses */ 57 #define PLLFCLK_ADDR 0x00350068 58 #define PLLBCLK_ADDR 0x0035006c 59 #define SDRAMEN_ADDR 0x00350010 60 #define FW_ADDR 0x00801000 61 #define BR_ADDR 0x00180600 62 #define SIG_ADDR 0x00180500 63 #define BR_STACK_ADDR 0x00187f10 64 65 /* Values */ 66 #define SDRAM_ENA 0x1 67 68 #define CMD_TIMEOUT 2000 /* msecs */ 69 #define POLL_INTERVAL 1 /* secs */ 70 71 /* commands for interaction with the modem through the control channel before 72 * firmware is loaded */ 73 enum cxacru_fw_request { 74 FW_CMD_ERR, 75 FW_GET_VER, 76 FW_READ_MEM, 77 FW_WRITE_MEM, 78 FW_RMW_MEM, 79 FW_CHECKSUM_MEM, 80 FW_GOTO_MEM, 81 }; 82 83 /* commands for interaction with the modem through the control channel once 84 * firmware is loaded */ 85 enum cxacru_cm_request { 86 CM_REQUEST_UNDEFINED = 0x80, 87 CM_REQUEST_TEST, 88 CM_REQUEST_CHIP_GET_MAC_ADDRESS, 89 CM_REQUEST_CHIP_GET_DP_VERSIONS, 90 CM_REQUEST_CHIP_ADSL_LINE_START, 91 CM_REQUEST_CHIP_ADSL_LINE_STOP, 92 CM_REQUEST_CHIP_ADSL_LINE_GET_STATUS, 93 CM_REQUEST_CHIP_ADSL_LINE_GET_SPEED, 94 CM_REQUEST_CARD_INFO_GET, 95 CM_REQUEST_CARD_DATA_GET, 96 CM_REQUEST_CARD_DATA_SET, 97 CM_REQUEST_COMMAND_HW_IO, 98 CM_REQUEST_INTERFACE_HW_IO, 99 CM_REQUEST_CARD_SERIAL_DATA_PATH_GET, 100 CM_REQUEST_CARD_SERIAL_DATA_PATH_SET, 101 CM_REQUEST_CARD_CONTROLLER_VERSION_GET, 102 CM_REQUEST_CARD_GET_STATUS, 103 CM_REQUEST_CARD_GET_MAC_ADDRESS, 104 CM_REQUEST_CARD_GET_DATA_LINK_STATUS, 105 CM_REQUEST_MAX, 106 }; 107 108 /* commands for interaction with the flash memory 109 * 110 * read: response is the contents of the first 60 bytes of flash memory 111 * write: request contains the 60 bytes of data to write to flash memory 112 * response is the contents of the first 60 bytes of flash memory 113 * 114 * layout: PP PP VV VV MM MM MM MM MM MM ?? ?? SS SS SS SS SS SS SS SS 115 * SS SS SS SS SS SS SS SS 00 00 00 00 00 00 00 00 00 00 00 00 116 * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 117 * 118 * P: le16 USB Product ID 119 * V: le16 USB Vendor ID 120 * M: be48 MAC Address 121 * S: le16 ASCII Serial Number 122 */ 123 enum cxacru_cm_flash { 124 CM_FLASH_READ = 0xa1, 125 CM_FLASH_WRITE = 0xa2 126 }; 127 128 /* reply codes to the commands above */ 129 enum cxacru_cm_status { 130 CM_STATUS_UNDEFINED, 131 CM_STATUS_SUCCESS, 132 CM_STATUS_ERROR, 133 CM_STATUS_UNSUPPORTED, 134 CM_STATUS_UNIMPLEMENTED, 135 CM_STATUS_PARAMETER_ERROR, 136 CM_STATUS_DBG_LOOPBACK, 137 CM_STATUS_MAX, 138 }; 139 140 /* indices into CARD_INFO_GET return array */ 141 enum cxacru_info_idx { 142 CXINF_DOWNSTREAM_RATE, 143 CXINF_UPSTREAM_RATE, 144 CXINF_LINK_STATUS, 145 CXINF_LINE_STATUS, 146 CXINF_MAC_ADDRESS_HIGH, 147 CXINF_MAC_ADDRESS_LOW, 148 CXINF_UPSTREAM_SNR_MARGIN, 149 CXINF_DOWNSTREAM_SNR_MARGIN, 150 CXINF_UPSTREAM_ATTENUATION, 151 CXINF_DOWNSTREAM_ATTENUATION, 152 CXINF_TRANSMITTER_POWER, 153 CXINF_UPSTREAM_BITS_PER_FRAME, 154 CXINF_DOWNSTREAM_BITS_PER_FRAME, 155 CXINF_STARTUP_ATTEMPTS, 156 CXINF_UPSTREAM_CRC_ERRORS, 157 CXINF_DOWNSTREAM_CRC_ERRORS, 158 CXINF_UPSTREAM_FEC_ERRORS, 159 CXINF_DOWNSTREAM_FEC_ERRORS, 160 CXINF_UPSTREAM_HEC_ERRORS, 161 CXINF_DOWNSTREAM_HEC_ERRORS, 162 CXINF_LINE_STARTABLE, 163 CXINF_MODULATION, 164 CXINF_ADSL_HEADEND, 165 CXINF_ADSL_HEADEND_ENVIRONMENT, 166 CXINF_CONTROLLER_VERSION, 167 /* dunno what the missing two mean */ 168 CXINF_MAX = 0x1c, 169 }; 170 171 enum cxacru_poll_state { 172 CXPOLL_STOPPING, 173 CXPOLL_STOPPED, 174 CXPOLL_POLLING, 175 CXPOLL_SHUTDOWN 176 }; 177 178 struct cxacru_modem_type { 179 u32 pll_f_clk; 180 u32 pll_b_clk; 181 int boot_rom_patch; 182 }; 183 184 struct cxacru_data { 185 struct usbatm_data *usbatm; 186 187 const struct cxacru_modem_type *modem_type; 188 189 int line_status; 190 struct mutex adsl_state_serialize; 191 int adsl_status; 192 struct delayed_work poll_work; 193 u32 card_info[CXINF_MAX]; 194 struct mutex poll_state_serialize; 195 enum cxacru_poll_state poll_state; 196 197 /* contol handles */ 198 struct mutex cm_serialize; 199 u8 *rcv_buf; 200 u8 *snd_buf; 201 struct urb *rcv_urb; 202 struct urb *snd_urb; 203 struct completion rcv_done; 204 struct completion snd_done; 205 }; 206 207 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, 208 u8 *wdata, int wsize, u8 *rdata, int rsize); 209 static void cxacru_poll_status(struct work_struct *work); 210 211 /* Card info exported through sysfs */ 212 #define CXACRU__ATTR_INIT(_name) \ 213 static DEVICE_ATTR(_name, S_IRUGO, cxacru_sysfs_show_##_name, NULL) 214 215 #define CXACRU_CMD_INIT(_name) \ 216 static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \ 217 cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name) 218 219 #define CXACRU_SET_INIT(_name) \ 220 static DEVICE_ATTR(_name, S_IWUSR, \ 221 NULL, cxacru_sysfs_store_##_name) 222 223 #define CXACRU_ATTR_INIT(_value, _type, _name) \ 224 static ssize_t cxacru_sysfs_show_##_name(struct device *dev, \ 225 struct device_attribute *attr, char *buf) \ 226 { \ 227 struct cxacru_data *instance = to_usbatm_driver_data(\ 228 to_usb_interface(dev)); \ 229 \ 230 if (instance == NULL) \ 231 return -ENODEV; \ 232 \ 233 return cxacru_sysfs_showattr_##_type(instance->card_info[_value], buf); \ 234 } \ 235 CXACRU__ATTR_INIT(_name) 236 237 #define CXACRU_ATTR_CREATE(_v, _t, _name) CXACRU_DEVICE_CREATE_FILE(_name) 238 #define CXACRU_CMD_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) 239 #define CXACRU_SET_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) 240 #define CXACRU__ATTR_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) 241 242 #define CXACRU_ATTR_REMOVE(_v, _t, _name) CXACRU_DEVICE_REMOVE_FILE(_name) 243 #define CXACRU_CMD_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) 244 #define CXACRU_SET_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) 245 #define CXACRU__ATTR_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) 246 247 static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf) 248 { 249 return snprintf(buf, PAGE_SIZE, "%u\n", value); 250 } 251 252 static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf) 253 { 254 return snprintf(buf, PAGE_SIZE, "%d\n", value); 255 } 256 257 static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf) 258 { 259 if (likely(value >= 0)) { 260 return snprintf(buf, PAGE_SIZE, "%u.%02u\n", 261 value / 100, value % 100); 262 } else { 263 value = -value; 264 return snprintf(buf, PAGE_SIZE, "-%u.%02u\n", 265 value / 100, value % 100); 266 } 267 } 268 269 static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf) 270 { 271 static char *str[] = { "no", "yes" }; 272 273 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 } 277 278 static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf) 279 { 280 static char *str[] = { NULL, "not connected", "connected", "lost" }; 281 282 if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL)) 283 return snprintf(buf, PAGE_SIZE, "%u\n", value); 284 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 285 } 286 287 static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf) 288 { 289 static char *str[] = { "down", "attempting to activate", 290 "training", "channel analysis", "exchange", "up", 291 "waiting", "initialising" 292 }; 293 if (unlikely(value >= ARRAY_SIZE(str))) 294 return snprintf(buf, PAGE_SIZE, "%u\n", value); 295 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 296 } 297 298 static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf) 299 { 300 static char *str[] = { 301 "", 302 "ANSI T1.413", 303 "ITU-T G.992.1 (G.DMT)", 304 "ITU-T G.992.2 (G.LITE)" 305 }; 306 if (unlikely(value >= ARRAY_SIZE(str))) 307 return snprintf(buf, PAGE_SIZE, "%u\n", value); 308 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 309 } 310 311 /* 312 * This could use MAC_ADDRESS_HIGH and MAC_ADDRESS_LOW, but since 313 * this data is already in atm_dev there's no point. 314 * 315 * MAC_ADDRESS_HIGH = 0x????5544 316 * MAC_ADDRESS_LOW = 0x33221100 317 * Where 00-55 are bytes 0-5 of the MAC. 318 */ 319 static ssize_t cxacru_sysfs_show_mac_address(struct device *dev, 320 struct device_attribute *attr, char *buf) 321 { 322 struct cxacru_data *instance = to_usbatm_driver_data( 323 to_usb_interface(dev)); 324 325 if (instance == NULL || instance->usbatm->atm_dev == NULL) 326 return -ENODEV; 327 328 return snprintf(buf, PAGE_SIZE, "%pM\n", 329 instance->usbatm->atm_dev->esi); 330 } 331 332 static ssize_t cxacru_sysfs_show_adsl_state(struct device *dev, 333 struct device_attribute *attr, char *buf) 334 { 335 static char *str[] = { "running", "stopped" }; 336 struct cxacru_data *instance = to_usbatm_driver_data( 337 to_usb_interface(dev)); 338 u32 value; 339 340 if (instance == NULL) 341 return -ENODEV; 342 343 value = instance->card_info[CXINF_LINE_STARTABLE]; 344 if (unlikely(value >= ARRAY_SIZE(str))) 345 return snprintf(buf, PAGE_SIZE, "%u\n", value); 346 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 347 } 348 349 static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev, 350 struct device_attribute *attr, const char *buf, size_t count) 351 { 352 struct cxacru_data *instance = to_usbatm_driver_data( 353 to_usb_interface(dev)); 354 int ret; 355 int poll = -1; 356 char str_cmd[8]; 357 int len = strlen(buf); 358 359 if (!capable(CAP_NET_ADMIN)) 360 return -EACCES; 361 362 ret = sscanf(buf, "%7s", str_cmd); 363 if (ret != 1) 364 return -EINVAL; 365 ret = 0; 366 367 if (instance == NULL) 368 return -ENODEV; 369 370 if (mutex_lock_interruptible(&instance->adsl_state_serialize)) 371 return -ERESTARTSYS; 372 373 if (!strcmp(str_cmd, "stop") || !strcmp(str_cmd, "restart")) { 374 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_STOP, NULL, 0, NULL, 0); 375 if (ret < 0) { 376 atm_err(instance->usbatm, "change adsl state:" 377 " CHIP_ADSL_LINE_STOP returned %d\n", ret); 378 379 ret = -EIO; 380 } else { 381 ret = len; 382 poll = CXPOLL_STOPPED; 383 } 384 } 385 386 /* Line status is only updated every second 387 * and the device appears to only react to 388 * START/STOP every second too. Wait 1.5s to 389 * be sure that restart will have an effect. */ 390 if (!strcmp(str_cmd, "restart")) 391 msleep(1500); 392 393 if (!strcmp(str_cmd, "start") || !strcmp(str_cmd, "restart")) { 394 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0); 395 if (ret < 0) { 396 atm_err(instance->usbatm, "change adsl state:" 397 " CHIP_ADSL_LINE_START returned %d\n", ret); 398 399 ret = -EIO; 400 } else { 401 ret = len; 402 poll = CXPOLL_POLLING; 403 } 404 } 405 406 if (!strcmp(str_cmd, "poll")) { 407 ret = len; 408 poll = CXPOLL_POLLING; 409 } 410 411 if (ret == 0) { 412 ret = -EINVAL; 413 poll = -1; 414 } 415 416 if (poll == CXPOLL_POLLING) { 417 mutex_lock(&instance->poll_state_serialize); 418 switch (instance->poll_state) { 419 case CXPOLL_STOPPED: 420 /* start polling */ 421 instance->poll_state = CXPOLL_POLLING; 422 break; 423 424 case CXPOLL_STOPPING: 425 /* abort stop request */ 426 instance->poll_state = CXPOLL_POLLING; 427 case CXPOLL_POLLING: 428 case CXPOLL_SHUTDOWN: 429 /* don't start polling */ 430 poll = -1; 431 } 432 mutex_unlock(&instance->poll_state_serialize); 433 } else if (poll == CXPOLL_STOPPED) { 434 mutex_lock(&instance->poll_state_serialize); 435 /* request stop */ 436 if (instance->poll_state == CXPOLL_POLLING) 437 instance->poll_state = CXPOLL_STOPPING; 438 mutex_unlock(&instance->poll_state_serialize); 439 } 440 441 mutex_unlock(&instance->adsl_state_serialize); 442 443 if (poll == CXPOLL_POLLING) 444 cxacru_poll_status(&instance->poll_work.work); 445 446 return ret; 447 } 448 449 /* CM_REQUEST_CARD_DATA_GET times out, so no show attribute */ 450 451 static ssize_t cxacru_sysfs_store_adsl_config(struct device *dev, 452 struct device_attribute *attr, const char *buf, size_t count) 453 { 454 struct cxacru_data *instance = to_usbatm_driver_data( 455 to_usb_interface(dev)); 456 int len = strlen(buf); 457 int ret, pos, num; 458 __le32 data[CMD_PACKET_SIZE / 4]; 459 460 if (!capable(CAP_NET_ADMIN)) 461 return -EACCES; 462 463 if (instance == NULL) 464 return -ENODEV; 465 466 pos = 0; 467 num = 0; 468 while (pos < len) { 469 int tmp; 470 u32 index; 471 u32 value; 472 473 ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp); 474 if (ret < 2) 475 return -EINVAL; 476 if (index > 0x7f) 477 return -EINVAL; 478 if (tmp < 0 || tmp > len - pos) 479 return -EINVAL; 480 pos += tmp; 481 482 /* skip trailing newline */ 483 if (buf[pos] == '\n' && pos == len-1) 484 pos++; 485 486 data[num * 2 + 1] = cpu_to_le32(index); 487 data[num * 2 + 2] = cpu_to_le32(value); 488 num++; 489 490 /* send config values when data buffer is full 491 * or no more data 492 */ 493 if (pos >= len || num >= CMD_MAX_CONFIG) { 494 char log[CMD_MAX_CONFIG * 12 + 1]; /* %02x=%08x */ 495 496 data[0] = cpu_to_le32(num); 497 ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET, 498 (u8 *) data, 4 + num * 8, NULL, 0); 499 if (ret < 0) { 500 atm_err(instance->usbatm, 501 "set card data returned %d\n", ret); 502 return -EIO; 503 } 504 505 for (tmp = 0; tmp < num; tmp++) 506 snprintf(log + tmp*12, 13, " %02x=%08x", 507 le32_to_cpu(data[tmp * 2 + 1]), 508 le32_to_cpu(data[tmp * 2 + 2])); 509 atm_info(instance->usbatm, "config%s\n", log); 510 num = 0; 511 } 512 } 513 514 return len; 515 } 516 517 /* 518 * All device attributes are included in CXACRU_ALL_FILES 519 * so that the same list can be used multiple times: 520 * INIT (define the device attributes) 521 * CREATE (create all the device files) 522 * REMOVE (remove all the device files) 523 * 524 * With the last two being defined as needed in the functions 525 * they are used in before calling CXACRU_ALL_FILES() 526 */ 527 #define CXACRU_ALL_FILES(_action) \ 528 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_RATE, u32, downstream_rate); \ 529 CXACRU_ATTR_##_action(CXINF_UPSTREAM_RATE, u32, upstream_rate); \ 530 CXACRU_ATTR_##_action(CXINF_LINK_STATUS, LINK, link_status); \ 531 CXACRU_ATTR_##_action(CXINF_LINE_STATUS, LINE, line_status); \ 532 CXACRU__ATTR_##_action( mac_address); \ 533 CXACRU_ATTR_##_action(CXINF_UPSTREAM_SNR_MARGIN, dB, upstream_snr_margin); \ 534 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_SNR_MARGIN, dB, downstream_snr_margin); \ 535 CXACRU_ATTR_##_action(CXINF_UPSTREAM_ATTENUATION, dB, upstream_attenuation); \ 536 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_ATTENUATION, dB, downstream_attenuation); \ 537 CXACRU_ATTR_##_action(CXINF_TRANSMITTER_POWER, s8, transmitter_power); \ 538 CXACRU_ATTR_##_action(CXINF_UPSTREAM_BITS_PER_FRAME, u32, upstream_bits_per_frame); \ 539 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_BITS_PER_FRAME, u32, downstream_bits_per_frame); \ 540 CXACRU_ATTR_##_action(CXINF_STARTUP_ATTEMPTS, u32, startup_attempts); \ 541 CXACRU_ATTR_##_action(CXINF_UPSTREAM_CRC_ERRORS, u32, upstream_crc_errors); \ 542 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_CRC_ERRORS, u32, downstream_crc_errors); \ 543 CXACRU_ATTR_##_action(CXINF_UPSTREAM_FEC_ERRORS, u32, upstream_fec_errors); \ 544 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_FEC_ERRORS, u32, downstream_fec_errors); \ 545 CXACRU_ATTR_##_action(CXINF_UPSTREAM_HEC_ERRORS, u32, upstream_hec_errors); \ 546 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_HEC_ERRORS, u32, downstream_hec_errors); \ 547 CXACRU_ATTR_##_action(CXINF_LINE_STARTABLE, bool, line_startable); \ 548 CXACRU_ATTR_##_action(CXINF_MODULATION, MODU, modulation); \ 549 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND, u32, adsl_headend); \ 550 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT, u32, adsl_headend_environment); \ 551 CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION, u32, adsl_controller_version); \ 552 CXACRU_CMD_##_action( adsl_state); \ 553 CXACRU_SET_##_action( adsl_config); 554 555 CXACRU_ALL_FILES(INIT); 556 557 /* the following three functions are stolen from drivers/usb/core/message.c */ 558 static void cxacru_blocking_completion(struct urb *urb) 559 { 560 complete(urb->context); 561 } 562 563 static void cxacru_timeout_kill(unsigned long data) 564 { 565 usb_unlink_urb((struct urb *) data); 566 } 567 568 static int cxacru_start_wait_urb(struct urb *urb, struct completion *done, 569 int *actual_length) 570 { 571 struct timer_list timer; 572 573 init_timer(&timer); 574 timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT); 575 timer.data = (unsigned long) urb; 576 timer.function = cxacru_timeout_kill; 577 add_timer(&timer); 578 wait_for_completion(done); 579 del_timer_sync(&timer); 580 581 if (actual_length) 582 *actual_length = urb->actual_length; 583 return urb->status; /* must read status after completion */ 584 } 585 586 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, 587 u8 *wdata, int wsize, u8 *rdata, int rsize) 588 { 589 int ret, actlen; 590 int offb, offd; 591 const int stride = CMD_PACKET_SIZE - 4; 592 u8 *wbuf = instance->snd_buf; 593 u8 *rbuf = instance->rcv_buf; 594 int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE; 595 int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE; 596 597 if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) { 598 if (printk_ratelimit()) 599 usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n", 600 wbuflen, rbuflen); 601 ret = -ENOMEM; 602 goto err; 603 } 604 605 mutex_lock(&instance->cm_serialize); 606 607 /* submit reading urb before the writing one */ 608 init_completion(&instance->rcv_done); 609 ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL); 610 if (ret < 0) { 611 if (printk_ratelimit()) 612 usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n", 613 cm, ret); 614 goto fail; 615 } 616 617 memset(wbuf, 0, wbuflen); 618 /* handle wsize == 0 */ 619 wbuf[0] = cm; 620 for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) { 621 wbuf[offb] = cm; 622 memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd)); 623 } 624 625 instance->snd_urb->transfer_buffer_length = wbuflen; 626 init_completion(&instance->snd_done); 627 ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL); 628 if (ret < 0) { 629 if (printk_ratelimit()) 630 usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n", 631 cm, ret); 632 goto fail; 633 } 634 635 ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL); 636 if (ret < 0) { 637 if (printk_ratelimit()) 638 usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret); 639 goto fail; 640 } 641 642 ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen); 643 if (ret < 0) { 644 if (printk_ratelimit()) 645 usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret); 646 goto fail; 647 } 648 if (actlen % CMD_PACKET_SIZE || !actlen) { 649 if (printk_ratelimit()) 650 usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n", 651 cm, actlen); 652 ret = -EIO; 653 goto fail; 654 } 655 656 /* check the return status and copy the data to the output buffer, if needed */ 657 for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) { 658 if (rbuf[offb] != cm) { 659 if (printk_ratelimit()) 660 usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n", 661 rbuf[offb], cm); 662 ret = -EIO; 663 goto fail; 664 } 665 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) { 666 if (printk_ratelimit()) 667 usb_err(instance->usbatm, "response to cm %#x failed: %#x\n", 668 cm, rbuf[offb + 1]); 669 ret = -EIO; 670 goto fail; 671 } 672 if (offd >= rsize) 673 break; 674 memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd)); 675 offd += stride; 676 } 677 678 ret = offd; 679 usb_dbg(instance->usbatm, "cm %#x\n", cm); 680 fail: 681 mutex_unlock(&instance->cm_serialize); 682 err: 683 return ret; 684 } 685 686 static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm, 687 u32 *data, int size) 688 { 689 int ret, len; 690 __le32 *buf; 691 int offb; 692 unsigned int offd; 693 const int stride = CMD_PACKET_SIZE / (4 * 2) - 1; 694 int buflen = ((size - 1) / stride + 1 + size * 2) * 4; 695 696 buf = kmalloc(buflen, GFP_KERNEL); 697 if (!buf) 698 return -ENOMEM; 699 700 ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen); 701 if (ret < 0) 702 goto cleanup; 703 704 /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */ 705 len = ret / 4; 706 for (offb = 0; offb < len; ) { 707 int l = le32_to_cpu(buf[offb++]); 708 709 if (l < 0 || l > stride || l > (len - offb) / 2) { 710 if (printk_ratelimit()) 711 usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n", 712 cm, l); 713 ret = -EIO; 714 goto cleanup; 715 } 716 while (l--) { 717 offd = le32_to_cpu(buf[offb++]); 718 if (offd >= size) { 719 if (printk_ratelimit()) 720 usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n", 721 offd, cm); 722 ret = -EIO; 723 goto cleanup; 724 } 725 data[offd] = le32_to_cpu(buf[offb++]); 726 } 727 } 728 729 ret = 0; 730 731 cleanup: 732 kfree(buf); 733 return ret; 734 } 735 736 static int cxacru_card_status(struct cxacru_data *instance) 737 { 738 int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); 739 740 if (ret < 0) { /* firmware not loaded */ 741 usb_dbg(instance->usbatm, "cxacru_adsl_start: CARD_GET_STATUS returned %d\n", ret); 742 return ret; 743 } 744 return 0; 745 } 746 747 static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance, 748 struct atm_dev *atm_dev) 749 { 750 struct usb_interface *intf = usbatm_instance->usb_intf; 751 752 #define CXACRU_DEVICE_REMOVE_FILE(_name) \ 753 device_remove_file(&intf->dev, &dev_attr_##_name); 754 CXACRU_ALL_FILES(REMOVE); 755 #undef CXACRU_DEVICE_REMOVE_FILE 756 } 757 758 static int cxacru_atm_start(struct usbatm_data *usbatm_instance, 759 struct atm_dev *atm_dev) 760 { 761 struct cxacru_data *instance = usbatm_instance->driver_data; 762 struct usb_interface *intf = usbatm_instance->usb_intf; 763 int ret; 764 int start_polling = 1; 765 766 dev_dbg(&intf->dev, "%s\n", __func__); 767 768 /* Read MAC address */ 769 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0, 770 atm_dev->esi, sizeof(atm_dev->esi)); 771 if (ret < 0) { 772 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret); 773 return ret; 774 } 775 776 #define CXACRU_DEVICE_CREATE_FILE(_name) \ 777 ret = device_create_file(&intf->dev, &dev_attr_##_name); \ 778 if (unlikely(ret)) \ 779 goto fail_sysfs; 780 CXACRU_ALL_FILES(CREATE); 781 #undef CXACRU_DEVICE_CREATE_FILE 782 783 /* start ADSL */ 784 mutex_lock(&instance->adsl_state_serialize); 785 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0); 786 if (ret < 0) 787 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret); 788 789 /* Start status polling */ 790 mutex_lock(&instance->poll_state_serialize); 791 switch (instance->poll_state) { 792 case CXPOLL_STOPPED: 793 /* start polling */ 794 instance->poll_state = CXPOLL_POLLING; 795 break; 796 797 case CXPOLL_STOPPING: 798 /* abort stop request */ 799 instance->poll_state = CXPOLL_POLLING; 800 case CXPOLL_POLLING: 801 case CXPOLL_SHUTDOWN: 802 /* don't start polling */ 803 start_polling = 0; 804 } 805 mutex_unlock(&instance->poll_state_serialize); 806 mutex_unlock(&instance->adsl_state_serialize); 807 808 printk(KERN_INFO "%s%d: %s %pM\n", atm_dev->type, atm_dev->number, 809 usbatm_instance->description, atm_dev->esi); 810 811 if (start_polling) 812 cxacru_poll_status(&instance->poll_work.work); 813 return 0; 814 815 fail_sysfs: 816 usb_err(usbatm_instance, "cxacru_atm_start: device_create_file failed (%d)\n", ret); 817 cxacru_remove_device_files(usbatm_instance, atm_dev); 818 return ret; 819 } 820 821 static void cxacru_poll_status(struct work_struct *work) 822 { 823 struct cxacru_data *instance = 824 container_of(work, struct cxacru_data, poll_work.work); 825 u32 buf[CXINF_MAX] = {}; 826 struct usbatm_data *usbatm = instance->usbatm; 827 struct atm_dev *atm_dev = usbatm->atm_dev; 828 int keep_polling = 1; 829 int ret; 830 831 ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX); 832 if (ret < 0) { 833 if (ret != -ESHUTDOWN) 834 atm_warn(usbatm, "poll status: error %d\n", ret); 835 836 mutex_lock(&instance->poll_state_serialize); 837 if (instance->poll_state != CXPOLL_SHUTDOWN) { 838 instance->poll_state = CXPOLL_STOPPED; 839 840 if (ret != -ESHUTDOWN) 841 atm_warn(usbatm, "polling disabled, set adsl_state" 842 " to 'start' or 'poll' to resume\n"); 843 } 844 mutex_unlock(&instance->poll_state_serialize); 845 goto reschedule; 846 } 847 848 memcpy(instance->card_info, buf, sizeof(instance->card_info)); 849 850 if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) { 851 instance->adsl_status = buf[CXINF_LINE_STARTABLE]; 852 853 switch (instance->adsl_status) { 854 case 0: 855 atm_printk(KERN_INFO, usbatm, "ADSL state: running\n"); 856 break; 857 858 case 1: 859 atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n"); 860 break; 861 862 default: 863 atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status); 864 break; 865 } 866 } 867 868 if (instance->line_status == buf[CXINF_LINE_STATUS]) 869 goto reschedule; 870 871 instance->line_status = buf[CXINF_LINE_STATUS]; 872 switch (instance->line_status) { 873 case 0: 874 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 875 atm_info(usbatm, "ADSL line: down\n"); 876 break; 877 878 case 1: 879 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 880 atm_info(usbatm, "ADSL line: attempting to activate\n"); 881 break; 882 883 case 2: 884 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 885 atm_info(usbatm, "ADSL line: training\n"); 886 break; 887 888 case 3: 889 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 890 atm_info(usbatm, "ADSL line: channel analysis\n"); 891 break; 892 893 case 4: 894 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 895 atm_info(usbatm, "ADSL line: exchange\n"); 896 break; 897 898 case 5: 899 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424; 900 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_FOUND); 901 902 atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n", 903 buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]); 904 break; 905 906 case 6: 907 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 908 atm_info(usbatm, "ADSL line: waiting\n"); 909 break; 910 911 case 7: 912 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 913 atm_info(usbatm, "ADSL line: initializing\n"); 914 break; 915 916 default: 917 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_UNKNOWN); 918 atm_info(usbatm, "Unknown line state %02x\n", instance->line_status); 919 break; 920 } 921 reschedule: 922 923 mutex_lock(&instance->poll_state_serialize); 924 if (instance->poll_state == CXPOLL_STOPPING && 925 instance->adsl_status == 1 && /* stopped */ 926 instance->line_status == 0) /* down */ 927 instance->poll_state = CXPOLL_STOPPED; 928 929 if (instance->poll_state == CXPOLL_STOPPED) 930 keep_polling = 0; 931 mutex_unlock(&instance->poll_state_serialize); 932 933 if (keep_polling) 934 schedule_delayed_work(&instance->poll_work, 935 round_jiffies_relative(POLL_INTERVAL*HZ)); 936 } 937 938 static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw, 939 u8 code1, u8 code2, u32 addr, const u8 *data, int size) 940 { 941 int ret; 942 u8 *buf; 943 int offd, offb; 944 const int stride = CMD_PACKET_SIZE - 8; 945 946 buf = (u8 *) __get_free_page(GFP_KERNEL); 947 if (!buf) 948 return -ENOMEM; 949 950 offb = offd = 0; 951 do { 952 int l = min_t(int, stride, size - offd); 953 954 buf[offb++] = fw; 955 buf[offb++] = l; 956 buf[offb++] = code1; 957 buf[offb++] = code2; 958 put_unaligned(cpu_to_le32(addr), (__le32 *)(buf + offb)); 959 offb += 4; 960 addr += l; 961 if (l) 962 memcpy(buf + offb, data + offd, l); 963 if (l < stride) 964 memset(buf + offb + l, 0, stride - l); 965 offb += stride; 966 offd += stride; 967 if ((offb >= PAGE_SIZE) || (offd >= size)) { 968 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), 969 buf, offb, NULL, CMD_TIMEOUT); 970 if (ret < 0) { 971 dev_dbg(&usb_dev->dev, "sending fw %#x failed\n", fw); 972 goto cleanup; 973 } 974 offb = 0; 975 } 976 } while (offd < size); 977 dev_dbg(&usb_dev->dev, "sent fw %#x\n", fw); 978 979 ret = 0; 980 981 cleanup: 982 free_page((unsigned long) buf); 983 return ret; 984 } 985 986 static void cxacru_upload_firmware(struct cxacru_data *instance, 987 const struct firmware *fw, 988 const struct firmware *bp) 989 { 990 int ret; 991 struct usbatm_data *usbatm = instance->usbatm; 992 struct usb_device *usb_dev = usbatm->usb_dev; 993 __le16 signature[] = { usb_dev->descriptor.idVendor, 994 usb_dev->descriptor.idProduct }; 995 __le32 val; 996 997 usb_dbg(usbatm, "%s\n", __func__); 998 999 /* FirmwarePllFClkValue */ 1000 val = cpu_to_le32(instance->modem_type->pll_f_clk); 1001 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4); 1002 if (ret) { 1003 usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret); 1004 return; 1005 } 1006 1007 /* FirmwarePllBClkValue */ 1008 val = cpu_to_le32(instance->modem_type->pll_b_clk); 1009 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4); 1010 if (ret) { 1011 usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret); 1012 return; 1013 } 1014 1015 /* Enable SDRAM */ 1016 val = cpu_to_le32(SDRAM_ENA); 1017 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4); 1018 if (ret) { 1019 usb_err(usbatm, "Enable SDRAM failed: %d\n", ret); 1020 return; 1021 } 1022 1023 /* Firmware */ 1024 usb_info(usbatm, "loading firmware\n"); 1025 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size); 1026 if (ret) { 1027 usb_err(usbatm, "Firmware upload failed: %d\n", ret); 1028 return; 1029 } 1030 1031 /* Boot ROM patch */ 1032 if (instance->modem_type->boot_rom_patch) { 1033 usb_info(usbatm, "loading boot ROM patch\n"); 1034 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size); 1035 if (ret) { 1036 usb_err(usbatm, "Boot ROM patching failed: %d\n", ret); 1037 return; 1038 } 1039 } 1040 1041 /* Signature */ 1042 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4); 1043 if (ret) { 1044 usb_err(usbatm, "Signature storing failed: %d\n", ret); 1045 return; 1046 } 1047 1048 usb_info(usbatm, "starting device\n"); 1049 if (instance->modem_type->boot_rom_patch) { 1050 val = cpu_to_le32(BR_ADDR); 1051 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4); 1052 } else { 1053 ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0); 1054 } 1055 if (ret) { 1056 usb_err(usbatm, "Passing control to firmware failed: %d\n", ret); 1057 return; 1058 } 1059 1060 /* Delay to allow firmware to start up. */ 1061 msleep_interruptible(1000); 1062 1063 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD)); 1064 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD)); 1065 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA)); 1066 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA)); 1067 1068 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); 1069 if (ret < 0) { 1070 usb_err(usbatm, "modem failed to initialize: %d\n", ret); 1071 return; 1072 } 1073 } 1074 1075 static int cxacru_find_firmware(struct cxacru_data *instance, 1076 char *phase, const struct firmware **fw_p) 1077 { 1078 struct usbatm_data *usbatm = instance->usbatm; 1079 struct device *dev = &usbatm->usb_intf->dev; 1080 char buf[16]; 1081 1082 sprintf(buf, "cxacru-%s.bin", phase); 1083 usb_dbg(usbatm, "cxacru_find_firmware: looking for %s\n", buf); 1084 1085 if (request_firmware(fw_p, buf, dev)) { 1086 usb_dbg(usbatm, "no stage %s firmware found\n", phase); 1087 return -ENOENT; 1088 } 1089 1090 usb_info(usbatm, "found firmware %s\n", buf); 1091 1092 return 0; 1093 } 1094 1095 static int cxacru_heavy_init(struct usbatm_data *usbatm_instance, 1096 struct usb_interface *usb_intf) 1097 { 1098 const struct firmware *fw, *bp; 1099 struct cxacru_data *instance = usbatm_instance->driver_data; 1100 int ret = cxacru_find_firmware(instance, "fw", &fw); 1101 1102 if (ret) { 1103 usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n"); 1104 return ret; 1105 } 1106 1107 if (instance->modem_type->boot_rom_patch) { 1108 ret = cxacru_find_firmware(instance, "bp", &bp); 1109 if (ret) { 1110 usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n"); 1111 release_firmware(fw); 1112 return ret; 1113 } 1114 } 1115 1116 cxacru_upload_firmware(instance, fw, bp); 1117 1118 if (instance->modem_type->boot_rom_patch) 1119 release_firmware(bp); 1120 release_firmware(fw); 1121 1122 ret = cxacru_card_status(instance); 1123 if (ret) 1124 usb_dbg(usbatm_instance, "modem initialisation failed\n"); 1125 else 1126 usb_dbg(usbatm_instance, "done setting up the modem\n"); 1127 1128 return ret; 1129 } 1130 1131 static int cxacru_bind(struct usbatm_data *usbatm_instance, 1132 struct usb_interface *intf, const struct usb_device_id *id) 1133 { 1134 struct cxacru_data *instance; 1135 struct usb_device *usb_dev = interface_to_usbdev(intf); 1136 struct usb_host_endpoint *cmd_ep = usb_dev->ep_in[CXACRU_EP_CMD]; 1137 int ret; 1138 1139 /* instance init */ 1140 instance = kzalloc(sizeof(*instance), GFP_KERNEL); 1141 if (!instance) 1142 return -ENOMEM; 1143 1144 instance->usbatm = usbatm_instance; 1145 instance->modem_type = (struct cxacru_modem_type *) id->driver_info; 1146 1147 mutex_init(&instance->poll_state_serialize); 1148 instance->poll_state = CXPOLL_STOPPED; 1149 instance->line_status = -1; 1150 instance->adsl_status = -1; 1151 1152 mutex_init(&instance->adsl_state_serialize); 1153 1154 instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL); 1155 if (!instance->rcv_buf) { 1156 usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_buf\n"); 1157 ret = -ENOMEM; 1158 goto fail; 1159 } 1160 instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL); 1161 if (!instance->snd_buf) { 1162 usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_buf\n"); 1163 ret = -ENOMEM; 1164 goto fail; 1165 } 1166 instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL); 1167 if (!instance->rcv_urb) { 1168 ret = -ENOMEM; 1169 goto fail; 1170 } 1171 instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL); 1172 if (!instance->snd_urb) { 1173 ret = -ENOMEM; 1174 goto fail; 1175 } 1176 1177 if (!cmd_ep) { 1178 usb_dbg(usbatm_instance, "cxacru_bind: no command endpoint\n"); 1179 ret = -ENODEV; 1180 goto fail; 1181 } 1182 1183 if ((cmd_ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1184 == USB_ENDPOINT_XFER_INT) { 1185 usb_fill_int_urb(instance->rcv_urb, 1186 usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD), 1187 instance->rcv_buf, PAGE_SIZE, 1188 cxacru_blocking_completion, &instance->rcv_done, 1); 1189 1190 usb_fill_int_urb(instance->snd_urb, 1191 usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD), 1192 instance->snd_buf, PAGE_SIZE, 1193 cxacru_blocking_completion, &instance->snd_done, 4); 1194 } else { 1195 usb_fill_bulk_urb(instance->rcv_urb, 1196 usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD), 1197 instance->rcv_buf, PAGE_SIZE, 1198 cxacru_blocking_completion, &instance->rcv_done); 1199 1200 usb_fill_bulk_urb(instance->snd_urb, 1201 usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), 1202 instance->snd_buf, PAGE_SIZE, 1203 cxacru_blocking_completion, &instance->snd_done); 1204 } 1205 1206 mutex_init(&instance->cm_serialize); 1207 1208 INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status); 1209 1210 usbatm_instance->driver_data = instance; 1211 1212 usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT); 1213 1214 return 0; 1215 1216 fail: 1217 free_page((unsigned long) instance->snd_buf); 1218 free_page((unsigned long) instance->rcv_buf); 1219 usb_free_urb(instance->snd_urb); 1220 usb_free_urb(instance->rcv_urb); 1221 kfree(instance); 1222 1223 return ret; 1224 } 1225 1226 static void cxacru_unbind(struct usbatm_data *usbatm_instance, 1227 struct usb_interface *intf) 1228 { 1229 struct cxacru_data *instance = usbatm_instance->driver_data; 1230 int is_polling = 1; 1231 1232 usb_dbg(usbatm_instance, "cxacru_unbind entered\n"); 1233 1234 if (!instance) { 1235 usb_dbg(usbatm_instance, "cxacru_unbind: NULL instance!\n"); 1236 return; 1237 } 1238 1239 mutex_lock(&instance->poll_state_serialize); 1240 BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN); 1241 1242 /* ensure that status polling continues unless 1243 * it has already stopped */ 1244 if (instance->poll_state == CXPOLL_STOPPED) 1245 is_polling = 0; 1246 1247 /* stop polling from being stopped or started */ 1248 instance->poll_state = CXPOLL_SHUTDOWN; 1249 mutex_unlock(&instance->poll_state_serialize); 1250 1251 if (is_polling) 1252 cancel_delayed_work_sync(&instance->poll_work); 1253 1254 usb_kill_urb(instance->snd_urb); 1255 usb_kill_urb(instance->rcv_urb); 1256 usb_free_urb(instance->snd_urb); 1257 usb_free_urb(instance->rcv_urb); 1258 1259 free_page((unsigned long) instance->snd_buf); 1260 free_page((unsigned long) instance->rcv_buf); 1261 1262 kfree(instance); 1263 1264 usbatm_instance->driver_data = NULL; 1265 } 1266 1267 static const struct cxacru_modem_type cxacru_cafe = { 1268 .pll_f_clk = 0x02d874df, 1269 .pll_b_clk = 0x0196a51a, 1270 .boot_rom_patch = 1, 1271 }; 1272 1273 static const struct cxacru_modem_type cxacru_cb00 = { 1274 .pll_f_clk = 0x5, 1275 .pll_b_clk = 0x3, 1276 .boot_rom_patch = 0, 1277 }; 1278 1279 static const struct usb_device_id cxacru_usb_ids[] = { 1280 { /* V = Conexant P = ADSL modem (Euphrates project) */ 1281 USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe 1282 }, 1283 { /* V = Conexant P = ADSL modem (Hasbani project) */ 1284 USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00 1285 }, 1286 { /* V = Conexant P = ADSL modem */ 1287 USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1288 }, 1289 { /* V = Conexant P = ADSL modem (Well PTI-800) */ 1290 USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00 1291 }, 1292 { /* V = Conexant P = ADSL modem */ 1293 USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00 1294 }, 1295 { /* V = Conexant P = ADSL modem (ZTE ZXDSL 852) */ 1296 USB_DEVICE(0x0572, 0xcb07), .driver_info = (unsigned long) &cxacru_cb00 1297 }, 1298 { /* V = Olitec P = ADSL modem version 2 */ 1299 USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe 1300 }, 1301 { /* V = Olitec P = ADSL modem version 3 */ 1302 USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00 1303 }, 1304 { /* V = Trust/Amigo Technology Co. P = AMX-CA86U */ 1305 USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe 1306 }, 1307 { /* V = Zoom P = 5510 */ 1308 USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00 1309 }, 1310 { /* V = Draytek P = Vigor 318 */ 1311 USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00 1312 }, 1313 { /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */ 1314 USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00 1315 }, 1316 { /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */ 1317 USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00 1318 }, 1319 { /* V = Aethra P = Starmodem UM1020 */ 1320 USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00 1321 }, 1322 { /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */ 1323 USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00 1324 }, 1325 { /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */ 1326 USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1327 }, 1328 { /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */ 1329 USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00 1330 }, 1331 {} 1332 }; 1333 1334 MODULE_DEVICE_TABLE(usb, cxacru_usb_ids); 1335 1336 static struct usbatm_driver cxacru_driver = { 1337 .driver_name = cxacru_driver_name, 1338 .bind = cxacru_bind, 1339 .heavy_init = cxacru_heavy_init, 1340 .unbind = cxacru_unbind, 1341 .atm_start = cxacru_atm_start, 1342 .atm_stop = cxacru_remove_device_files, 1343 .bulk_in = CXACRU_EP_DATA, 1344 .bulk_out = CXACRU_EP_DATA, 1345 .rx_padding = 3, 1346 .tx_padding = 11, 1347 }; 1348 1349 static int cxacru_usb_probe(struct usb_interface *intf, 1350 const struct usb_device_id *id) 1351 { 1352 struct usb_device *usb_dev = interface_to_usbdev(intf); 1353 char buf[15]; 1354 1355 /* Avoid ADSL routers (cx82310_eth). 1356 * Abort if bDeviceClass is 0xff and iProduct is "USB NET CARD". 1357 */ 1358 if (usb_dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC 1359 && usb_string(usb_dev, usb_dev->descriptor.iProduct, 1360 buf, sizeof(buf)) > 0) { 1361 if (!strcmp(buf, "USB NET CARD")) { 1362 dev_info(&intf->dev, "ignoring cx82310_eth device\n"); 1363 return -ENODEV; 1364 } 1365 } 1366 1367 return usbatm_usb_probe(intf, id, &cxacru_driver); 1368 } 1369 1370 static struct usb_driver cxacru_usb_driver = { 1371 .name = cxacru_driver_name, 1372 .probe = cxacru_usb_probe, 1373 .disconnect = usbatm_usb_disconnect, 1374 .id_table = cxacru_usb_ids 1375 }; 1376 1377 module_usb_driver(cxacru_usb_driver); 1378 1379 MODULE_AUTHOR(DRIVER_AUTHOR); 1380 MODULE_DESCRIPTION(DRIVER_DESC); 1381 MODULE_LICENSE("GPL"); 1382