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 49 static 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 */ 74 enum 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 */ 86 enum 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 */ 124 enum cxacru_cm_flash { 125 CM_FLASH_READ = 0xa1, 126 CM_FLASH_WRITE = 0xa2 127 }; 128 129 /* reply codes to the commands above */ 130 enum 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 */ 142 enum 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 }; 171 172 enum cxacru_poll_state { 173 CXPOLL_STOPPING, 174 CXPOLL_STOPPED, 175 CXPOLL_POLLING, 176 CXPOLL_SHUTDOWN 177 }; 178 179 struct cxacru_modem_type { 180 u32 pll_f_clk; 181 u32 pll_b_clk; 182 int boot_rom_patch; 183 }; 184 185 struct 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 }; 207 208 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, 209 u8 *wdata, int wsize, u8 *rdata, int rsize); 210 static void cxacru_poll_status(struct work_struct *work); 211 212 /* Card info exported through sysfs */ 213 #define CXACRU__ATTR_INIT(_name) \ 214 static DEVICE_ATTR(_name, S_IRUGO, cxacru_sysfs_show_##_name, NULL) 215 216 #define CXACRU_CMD_INIT(_name) \ 217 static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \ 218 cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name) 219 220 #define CXACRU_SET_INIT(_name) \ 221 static DEVICE_ATTR(_name, S_IWUSR, \ 222 NULL, cxacru_sysfs_store_##_name) 223 224 #define CXACRU_ATTR_INIT(_value, _type, _name) \ 225 static 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 } \ 236 CXACRU__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) 247 248 static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf) 249 { 250 return snprintf(buf, PAGE_SIZE, "%u\n", value); 251 } 252 253 static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf) 254 { 255 return snprintf(buf, PAGE_SIZE, "%d\n", value); 256 } 257 258 static 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 } 269 270 static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf) 271 { 272 static char *str[] = { "no", "yes" }; 273 274 if (unlikely(value >= ARRAY_SIZE(str))) 275 return snprintf(buf, PAGE_SIZE, "%u\n", value); 276 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 277 } 278 279 static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf) 280 { 281 static char *str[] = { NULL, "not connected", "connected", "lost" }; 282 283 if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL)) 284 return snprintf(buf, PAGE_SIZE, "%u\n", value); 285 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 286 } 287 288 static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf) 289 { 290 static char *str[] = { "down", "attempting to activate", 291 "training", "channel analysis", "exchange", "up", 292 "waiting", "initialising" 293 }; 294 if (unlikely(value >= ARRAY_SIZE(str))) 295 return snprintf(buf, PAGE_SIZE, "%u\n", value); 296 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 297 } 298 299 static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf) 300 { 301 static char *str[] = { 302 "", 303 "ANSI T1.413", 304 "ITU-T G.992.1 (G.DMT)", 305 "ITU-T G.992.2 (G.LITE)" 306 }; 307 if (unlikely(value >= ARRAY_SIZE(str))) 308 return snprintf(buf, PAGE_SIZE, "%u\n", value); 309 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 310 } 311 312 /* 313 * This could use MAC_ADDRESS_HIGH and MAC_ADDRESS_LOW, but since 314 * this data is already in atm_dev there's no point. 315 * 316 * MAC_ADDRESS_HIGH = 0x????5544 317 * MAC_ADDRESS_LOW = 0x33221100 318 * Where 00-55 are bytes 0-5 of the MAC. 319 */ 320 static ssize_t cxacru_sysfs_show_mac_address(struct device *dev, 321 struct device_attribute *attr, char *buf) 322 { 323 struct cxacru_data *instance = to_usbatm_driver_data( 324 to_usb_interface(dev)); 325 326 if (instance == NULL || instance->usbatm->atm_dev == NULL) 327 return -ENODEV; 328 329 return snprintf(buf, PAGE_SIZE, "%pM\n", 330 instance->usbatm->atm_dev->esi); 331 } 332 333 static ssize_t cxacru_sysfs_show_adsl_state(struct device *dev, 334 struct device_attribute *attr, char *buf) 335 { 336 static char *str[] = { "running", "stopped" }; 337 struct cxacru_data *instance = to_usbatm_driver_data( 338 to_usb_interface(dev)); 339 u32 value; 340 341 if (instance == NULL) 342 return -ENODEV; 343 344 value = instance->card_info[CXINF_LINE_STARTABLE]; 345 if (unlikely(value >= ARRAY_SIZE(str))) 346 return snprintf(buf, PAGE_SIZE, "%u\n", value); 347 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 348 } 349 350 static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev, 351 struct device_attribute *attr, const char *buf, size_t count) 352 { 353 struct cxacru_data *instance = to_usbatm_driver_data( 354 to_usb_interface(dev)); 355 int ret; 356 int poll = -1; 357 char str_cmd[8]; 358 int len = strlen(buf); 359 360 if (!capable(CAP_NET_ADMIN)) 361 return -EACCES; 362 363 ret = sscanf(buf, "%7s", str_cmd); 364 if (ret != 1) 365 return -EINVAL; 366 ret = 0; 367 368 if (instance == NULL) 369 return -ENODEV; 370 371 if (mutex_lock_interruptible(&instance->adsl_state_serialize)) 372 return -ERESTARTSYS; 373 374 if (!strcmp(str_cmd, "stop") || !strcmp(str_cmd, "restart")) { 375 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_STOP, NULL, 0, NULL, 0); 376 if (ret < 0) { 377 atm_err(instance->usbatm, "change adsl state:" 378 " CHIP_ADSL_LINE_STOP returned %d\n", ret); 379 380 ret = -EIO; 381 } else { 382 ret = len; 383 poll = CXPOLL_STOPPED; 384 } 385 } 386 387 /* Line status is only updated every second 388 * and the device appears to only react to 389 * START/STOP every second too. Wait 1.5s to 390 * be sure that restart will have an effect. */ 391 if (!strcmp(str_cmd, "restart")) 392 msleep(1500); 393 394 if (!strcmp(str_cmd, "start") || !strcmp(str_cmd, "restart")) { 395 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0); 396 if (ret < 0) { 397 atm_err(instance->usbatm, "change adsl state:" 398 " CHIP_ADSL_LINE_START returned %d\n", ret); 399 400 ret = -EIO; 401 } else { 402 ret = len; 403 poll = CXPOLL_POLLING; 404 } 405 } 406 407 if (!strcmp(str_cmd, "poll")) { 408 ret = len; 409 poll = CXPOLL_POLLING; 410 } 411 412 if (ret == 0) { 413 ret = -EINVAL; 414 poll = -1; 415 } 416 417 if (poll == CXPOLL_POLLING) { 418 mutex_lock(&instance->poll_state_serialize); 419 switch (instance->poll_state) { 420 case CXPOLL_STOPPED: 421 /* start polling */ 422 instance->poll_state = CXPOLL_POLLING; 423 break; 424 425 case CXPOLL_STOPPING: 426 /* abort stop request */ 427 instance->poll_state = CXPOLL_POLLING; 428 case CXPOLL_POLLING: 429 case CXPOLL_SHUTDOWN: 430 /* don't start polling */ 431 poll = -1; 432 } 433 mutex_unlock(&instance->poll_state_serialize); 434 } else if (poll == CXPOLL_STOPPED) { 435 mutex_lock(&instance->poll_state_serialize); 436 /* request stop */ 437 if (instance->poll_state == CXPOLL_POLLING) 438 instance->poll_state = CXPOLL_STOPPING; 439 mutex_unlock(&instance->poll_state_serialize); 440 } 441 442 mutex_unlock(&instance->adsl_state_serialize); 443 444 if (poll == CXPOLL_POLLING) 445 cxacru_poll_status(&instance->poll_work.work); 446 447 return ret; 448 } 449 450 /* CM_REQUEST_CARD_DATA_GET times out, so no show attribute */ 451 452 static ssize_t cxacru_sysfs_store_adsl_config(struct device *dev, 453 struct device_attribute *attr, const char *buf, size_t count) 454 { 455 struct cxacru_data *instance = to_usbatm_driver_data( 456 to_usb_interface(dev)); 457 int len = strlen(buf); 458 int ret, pos, num; 459 __le32 data[CMD_PACKET_SIZE / 4]; 460 461 if (!capable(CAP_NET_ADMIN)) 462 return -EACCES; 463 464 if (instance == NULL) 465 return -ENODEV; 466 467 pos = 0; 468 num = 0; 469 while (pos < len) { 470 int tmp; 471 u32 index; 472 u32 value; 473 474 ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp); 475 if (ret < 2) 476 return -EINVAL; 477 if (index > 0x7f) 478 return -EINVAL; 479 if (tmp < 0 || tmp > len - pos) 480 return -EINVAL; 481 pos += tmp; 482 483 /* skip trailing newline */ 484 if (buf[pos] == '\n' && pos == len-1) 485 pos++; 486 487 data[num * 2 + 1] = cpu_to_le32(index); 488 data[num * 2 + 2] = cpu_to_le32(value); 489 num++; 490 491 /* send config values when data buffer is full 492 * or no more data 493 */ 494 if (pos >= len || num >= CMD_MAX_CONFIG) { 495 char log[CMD_MAX_CONFIG * 12 + 1]; /* %02x=%08x */ 496 497 data[0] = cpu_to_le32(num); 498 ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET, 499 (u8 *) data, 4 + num * 8, NULL, 0); 500 if (ret < 0) { 501 atm_err(instance->usbatm, 502 "set card data returned %d\n", ret); 503 return -EIO; 504 } 505 506 for (tmp = 0; tmp < num; tmp++) 507 snprintf(log + tmp*12, 13, " %02x=%08x", 508 le32_to_cpu(data[tmp * 2 + 1]), 509 le32_to_cpu(data[tmp * 2 + 2])); 510 atm_info(instance->usbatm, "config%s\n", log); 511 num = 0; 512 } 513 } 514 515 return len; 516 } 517 518 /* 519 * All device attributes are included in CXACRU_ALL_FILES 520 * so that the same list can be used multiple times: 521 * INIT (define the device attributes) 522 * CREATE (create all the device files) 523 * REMOVE (remove all the device files) 524 * 525 * With the last two being defined as needed in the functions 526 * they are used in before calling CXACRU_ALL_FILES() 527 */ 528 #define CXACRU_ALL_FILES(_action) \ 529 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_RATE, u32, downstream_rate); \ 530 CXACRU_ATTR_##_action(CXINF_UPSTREAM_RATE, u32, upstream_rate); \ 531 CXACRU_ATTR_##_action(CXINF_LINK_STATUS, LINK, link_status); \ 532 CXACRU_ATTR_##_action(CXINF_LINE_STATUS, LINE, line_status); \ 533 CXACRU__ATTR_##_action( mac_address); \ 534 CXACRU_ATTR_##_action(CXINF_UPSTREAM_SNR_MARGIN, dB, upstream_snr_margin); \ 535 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_SNR_MARGIN, dB, downstream_snr_margin); \ 536 CXACRU_ATTR_##_action(CXINF_UPSTREAM_ATTENUATION, dB, upstream_attenuation); \ 537 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_ATTENUATION, dB, downstream_attenuation); \ 538 CXACRU_ATTR_##_action(CXINF_TRANSMITTER_POWER, s8, transmitter_power); \ 539 CXACRU_ATTR_##_action(CXINF_UPSTREAM_BITS_PER_FRAME, u32, upstream_bits_per_frame); \ 540 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_BITS_PER_FRAME, u32, downstream_bits_per_frame); \ 541 CXACRU_ATTR_##_action(CXINF_STARTUP_ATTEMPTS, u32, startup_attempts); \ 542 CXACRU_ATTR_##_action(CXINF_UPSTREAM_CRC_ERRORS, u32, upstream_crc_errors); \ 543 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_CRC_ERRORS, u32, downstream_crc_errors); \ 544 CXACRU_ATTR_##_action(CXINF_UPSTREAM_FEC_ERRORS, u32, upstream_fec_errors); \ 545 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_FEC_ERRORS, u32, downstream_fec_errors); \ 546 CXACRU_ATTR_##_action(CXINF_UPSTREAM_HEC_ERRORS, u32, upstream_hec_errors); \ 547 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_HEC_ERRORS, u32, downstream_hec_errors); \ 548 CXACRU_ATTR_##_action(CXINF_LINE_STARTABLE, bool, line_startable); \ 549 CXACRU_ATTR_##_action(CXINF_MODULATION, MODU, modulation); \ 550 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND, u32, adsl_headend); \ 551 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT, u32, adsl_headend_environment); \ 552 CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION, u32, adsl_controller_version); \ 553 CXACRU_CMD_##_action( adsl_state); \ 554 CXACRU_SET_##_action( adsl_config); 555 556 CXACRU_ALL_FILES(INIT); 557 558 /* the following three functions are stolen from drivers/usb/core/message.c */ 559 static void cxacru_blocking_completion(struct urb *urb) 560 { 561 complete(urb->context); 562 } 563 564 static void cxacru_timeout_kill(unsigned long data) 565 { 566 usb_unlink_urb((struct urb *) data); 567 } 568 569 static int cxacru_start_wait_urb(struct urb *urb, struct completion *done, 570 int *actual_length) 571 { 572 struct timer_list timer; 573 574 init_timer(&timer); 575 timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT); 576 timer.data = (unsigned long) urb; 577 timer.function = cxacru_timeout_kill; 578 add_timer(&timer); 579 wait_for_completion(done); 580 del_timer_sync(&timer); 581 582 if (actual_length) 583 *actual_length = urb->actual_length; 584 return urb->status; /* must read status after completion */ 585 } 586 587 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, 588 u8 *wdata, int wsize, u8 *rdata, int rsize) 589 { 590 int ret, actlen; 591 int offb, offd; 592 const int stride = CMD_PACKET_SIZE - 4; 593 u8 *wbuf = instance->snd_buf; 594 u8 *rbuf = instance->rcv_buf; 595 int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE; 596 int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE; 597 598 if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) { 599 if (printk_ratelimit()) 600 usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n", 601 wbuflen, rbuflen); 602 ret = -ENOMEM; 603 goto err; 604 } 605 606 mutex_lock(&instance->cm_serialize); 607 608 /* submit reading urb before the writing one */ 609 init_completion(&instance->rcv_done); 610 ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL); 611 if (ret < 0) { 612 if (printk_ratelimit()) 613 usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n", 614 cm, ret); 615 goto fail; 616 } 617 618 memset(wbuf, 0, wbuflen); 619 /* handle wsize == 0 */ 620 wbuf[0] = cm; 621 for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) { 622 wbuf[offb] = cm; 623 memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd)); 624 } 625 626 instance->snd_urb->transfer_buffer_length = wbuflen; 627 init_completion(&instance->snd_done); 628 ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL); 629 if (ret < 0) { 630 if (printk_ratelimit()) 631 usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n", 632 cm, ret); 633 goto fail; 634 } 635 636 ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL); 637 if (ret < 0) { 638 if (printk_ratelimit()) 639 usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret); 640 goto fail; 641 } 642 643 ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen); 644 if (ret < 0) { 645 if (printk_ratelimit()) 646 usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret); 647 goto fail; 648 } 649 if (actlen % CMD_PACKET_SIZE || !actlen) { 650 if (printk_ratelimit()) 651 usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n", 652 cm, actlen); 653 ret = -EIO; 654 goto fail; 655 } 656 657 /* check the return status and copy the data to the output buffer, if needed */ 658 for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) { 659 if (rbuf[offb] != cm) { 660 if (printk_ratelimit()) 661 usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n", 662 rbuf[offb], cm); 663 ret = -EIO; 664 goto fail; 665 } 666 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) { 667 if (printk_ratelimit()) 668 usb_err(instance->usbatm, "response to cm %#x failed: %#x\n", 669 cm, rbuf[offb + 1]); 670 ret = -EIO; 671 goto fail; 672 } 673 if (offd >= rsize) 674 break; 675 memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd)); 676 offd += stride; 677 } 678 679 ret = offd; 680 usb_dbg(instance->usbatm, "cm %#x\n", cm); 681 fail: 682 mutex_unlock(&instance->cm_serialize); 683 err: 684 return ret; 685 } 686 687 static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm, 688 u32 *data, int size) 689 { 690 int ret, len; 691 __le32 *buf; 692 int offb; 693 unsigned int offd; 694 const int stride = CMD_PACKET_SIZE / (4 * 2) - 1; 695 int buflen = ((size - 1) / stride + 1 + size * 2) * 4; 696 697 buf = kmalloc(buflen, GFP_KERNEL); 698 if (!buf) 699 return -ENOMEM; 700 701 ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen); 702 if (ret < 0) 703 goto cleanup; 704 705 /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */ 706 len = ret / 4; 707 for (offb = 0; offb < len; ) { 708 int l = le32_to_cpu(buf[offb++]); 709 710 if (l < 0 || l > stride || l > (len - offb) / 2) { 711 if (printk_ratelimit()) 712 usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n", 713 cm, l); 714 ret = -EIO; 715 goto cleanup; 716 } 717 while (l--) { 718 offd = le32_to_cpu(buf[offb++]); 719 if (offd >= size) { 720 if (printk_ratelimit()) 721 usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n", 722 offd, cm); 723 ret = -EIO; 724 goto cleanup; 725 } 726 data[offd] = le32_to_cpu(buf[offb++]); 727 } 728 } 729 730 ret = 0; 731 732 cleanup: 733 kfree(buf); 734 return ret; 735 } 736 737 static int cxacru_card_status(struct cxacru_data *instance) 738 { 739 int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); 740 741 if (ret < 0) { /* firmware not loaded */ 742 usb_dbg(instance->usbatm, "cxacru_adsl_start: CARD_GET_STATUS returned %d\n", ret); 743 return ret; 744 } 745 return 0; 746 } 747 748 static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance, 749 struct atm_dev *atm_dev) 750 { 751 struct usb_interface *intf = usbatm_instance->usb_intf; 752 753 #define CXACRU_DEVICE_REMOVE_FILE(_name) \ 754 device_remove_file(&intf->dev, &dev_attr_##_name); 755 CXACRU_ALL_FILES(REMOVE); 756 #undef CXACRU_DEVICE_REMOVE_FILE 757 } 758 759 static int cxacru_atm_start(struct usbatm_data *usbatm_instance, 760 struct atm_dev *atm_dev) 761 { 762 struct cxacru_data *instance = usbatm_instance->driver_data; 763 struct usb_interface *intf = usbatm_instance->usb_intf; 764 int ret; 765 int start_polling = 1; 766 767 dev_dbg(&intf->dev, "%s\n", __func__); 768 769 /* Read MAC address */ 770 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0, 771 atm_dev->esi, sizeof(atm_dev->esi)); 772 if (ret < 0) { 773 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret); 774 return ret; 775 } 776 777 #define CXACRU_DEVICE_CREATE_FILE(_name) \ 778 ret = device_create_file(&intf->dev, &dev_attr_##_name); \ 779 if (unlikely(ret)) \ 780 goto fail_sysfs; 781 CXACRU_ALL_FILES(CREATE); 782 #undef CXACRU_DEVICE_CREATE_FILE 783 784 /* start ADSL */ 785 mutex_lock(&instance->adsl_state_serialize); 786 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0); 787 if (ret < 0) 788 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret); 789 790 /* Start status polling */ 791 mutex_lock(&instance->poll_state_serialize); 792 switch (instance->poll_state) { 793 case CXPOLL_STOPPED: 794 /* start polling */ 795 instance->poll_state = CXPOLL_POLLING; 796 break; 797 798 case CXPOLL_STOPPING: 799 /* abort stop request */ 800 instance->poll_state = CXPOLL_POLLING; 801 case CXPOLL_POLLING: 802 case CXPOLL_SHUTDOWN: 803 /* don't start polling */ 804 start_polling = 0; 805 } 806 mutex_unlock(&instance->poll_state_serialize); 807 mutex_unlock(&instance->adsl_state_serialize); 808 809 printk(KERN_INFO "%s%d: %s %pM\n", atm_dev->type, atm_dev->number, 810 usbatm_instance->description, atm_dev->esi); 811 812 if (start_polling) 813 cxacru_poll_status(&instance->poll_work.work); 814 return 0; 815 816 fail_sysfs: 817 usb_err(usbatm_instance, "cxacru_atm_start: device_create_file failed (%d)\n", ret); 818 cxacru_remove_device_files(usbatm_instance, atm_dev); 819 return ret; 820 } 821 822 static void cxacru_poll_status(struct work_struct *work) 823 { 824 struct cxacru_data *instance = 825 container_of(work, struct cxacru_data, poll_work.work); 826 u32 buf[CXINF_MAX] = {}; 827 struct usbatm_data *usbatm = instance->usbatm; 828 struct atm_dev *atm_dev = usbatm->atm_dev; 829 int keep_polling = 1; 830 int ret; 831 832 ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX); 833 if (ret < 0) { 834 if (ret != -ESHUTDOWN) 835 atm_warn(usbatm, "poll status: error %d\n", ret); 836 837 mutex_lock(&instance->poll_state_serialize); 838 if (instance->poll_state != CXPOLL_SHUTDOWN) { 839 instance->poll_state = CXPOLL_STOPPED; 840 841 if (ret != -ESHUTDOWN) 842 atm_warn(usbatm, "polling disabled, set adsl_state" 843 " to 'start' or 'poll' to resume\n"); 844 } 845 mutex_unlock(&instance->poll_state_serialize); 846 goto reschedule; 847 } 848 849 memcpy(instance->card_info, buf, sizeof(instance->card_info)); 850 851 if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) { 852 instance->adsl_status = buf[CXINF_LINE_STARTABLE]; 853 854 switch (instance->adsl_status) { 855 case 0: 856 atm_printk(KERN_INFO, usbatm, "ADSL state: running\n"); 857 break; 858 859 case 1: 860 atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n"); 861 break; 862 863 default: 864 atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status); 865 break; 866 } 867 } 868 869 if (instance->line_status == buf[CXINF_LINE_STATUS]) 870 goto reschedule; 871 872 instance->line_status = buf[CXINF_LINE_STATUS]; 873 switch (instance->line_status) { 874 case 0: 875 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 876 atm_info(usbatm, "ADSL line: down\n"); 877 break; 878 879 case 1: 880 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 881 atm_info(usbatm, "ADSL line: attempting to activate\n"); 882 break; 883 884 case 2: 885 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 886 atm_info(usbatm, "ADSL line: training\n"); 887 break; 888 889 case 3: 890 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 891 atm_info(usbatm, "ADSL line: channel analysis\n"); 892 break; 893 894 case 4: 895 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 896 atm_info(usbatm, "ADSL line: exchange\n"); 897 break; 898 899 case 5: 900 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424; 901 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_FOUND); 902 903 atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n", 904 buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]); 905 break; 906 907 case 6: 908 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 909 atm_info(usbatm, "ADSL line: waiting\n"); 910 break; 911 912 case 7: 913 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 914 atm_info(usbatm, "ADSL line: initializing\n"); 915 break; 916 917 default: 918 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_UNKNOWN); 919 atm_info(usbatm, "Unknown line state %02x\n", instance->line_status); 920 break; 921 } 922 reschedule: 923 924 mutex_lock(&instance->poll_state_serialize); 925 if (instance->poll_state == CXPOLL_STOPPING && 926 instance->adsl_status == 1 && /* stopped */ 927 instance->line_status == 0) /* down */ 928 instance->poll_state = CXPOLL_STOPPED; 929 930 if (instance->poll_state == CXPOLL_STOPPED) 931 keep_polling = 0; 932 mutex_unlock(&instance->poll_state_serialize); 933 934 if (keep_polling) 935 schedule_delayed_work(&instance->poll_work, 936 round_jiffies_relative(POLL_INTERVAL*HZ)); 937 } 938 939 static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw, 940 u8 code1, u8 code2, u32 addr, const u8 *data, int size) 941 { 942 int ret; 943 u8 *buf; 944 int offd, offb; 945 const int stride = CMD_PACKET_SIZE - 8; 946 947 buf = (u8 *) __get_free_page(GFP_KERNEL); 948 if (!buf) 949 return -ENOMEM; 950 951 offb = offd = 0; 952 do { 953 int l = min_t(int, stride, size - offd); 954 955 buf[offb++] = fw; 956 buf[offb++] = l; 957 buf[offb++] = code1; 958 buf[offb++] = code2; 959 put_unaligned(cpu_to_le32(addr), (__le32 *)(buf + offb)); 960 offb += 4; 961 addr += l; 962 if (l) 963 memcpy(buf + offb, data + offd, l); 964 if (l < stride) 965 memset(buf + offb + l, 0, stride - l); 966 offb += stride; 967 offd += stride; 968 if ((offb >= PAGE_SIZE) || (offd >= size)) { 969 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), 970 buf, offb, NULL, CMD_TIMEOUT); 971 if (ret < 0) { 972 dev_dbg(&usb_dev->dev, "sending fw %#x failed\n", fw); 973 goto cleanup; 974 } 975 offb = 0; 976 } 977 } while (offd < size); 978 dev_dbg(&usb_dev->dev, "sent fw %#x\n", fw); 979 980 ret = 0; 981 982 cleanup: 983 free_page((unsigned long) buf); 984 return ret; 985 } 986 987 static void cxacru_upload_firmware(struct cxacru_data *instance, 988 const struct firmware *fw, 989 const struct firmware *bp) 990 { 991 int ret; 992 struct usbatm_data *usbatm = instance->usbatm; 993 struct usb_device *usb_dev = usbatm->usb_dev; 994 __le16 signature[] = { usb_dev->descriptor.idVendor, 995 usb_dev->descriptor.idProduct }; 996 __le32 val; 997 998 usb_dbg(usbatm, "%s\n", __func__); 999 1000 /* FirmwarePllFClkValue */ 1001 val = cpu_to_le32(instance->modem_type->pll_f_clk); 1002 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4); 1003 if (ret) { 1004 usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret); 1005 return; 1006 } 1007 1008 /* FirmwarePllBClkValue */ 1009 val = cpu_to_le32(instance->modem_type->pll_b_clk); 1010 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4); 1011 if (ret) { 1012 usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret); 1013 return; 1014 } 1015 1016 /* Enable SDRAM */ 1017 val = cpu_to_le32(SDRAM_ENA); 1018 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4); 1019 if (ret) { 1020 usb_err(usbatm, "Enable SDRAM failed: %d\n", ret); 1021 return; 1022 } 1023 1024 /* Firmware */ 1025 usb_info(usbatm, "loading firmware\n"); 1026 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size); 1027 if (ret) { 1028 usb_err(usbatm, "Firmware upload failed: %d\n", ret); 1029 return; 1030 } 1031 1032 /* Boot ROM patch */ 1033 if (instance->modem_type->boot_rom_patch) { 1034 usb_info(usbatm, "loading boot ROM patch\n"); 1035 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size); 1036 if (ret) { 1037 usb_err(usbatm, "Boot ROM patching failed: %d\n", ret); 1038 return; 1039 } 1040 } 1041 1042 /* Signature */ 1043 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4); 1044 if (ret) { 1045 usb_err(usbatm, "Signature storing failed: %d\n", ret); 1046 return; 1047 } 1048 1049 usb_info(usbatm, "starting device\n"); 1050 if (instance->modem_type->boot_rom_patch) { 1051 val = cpu_to_le32(BR_ADDR); 1052 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4); 1053 } else { 1054 ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0); 1055 } 1056 if (ret) { 1057 usb_err(usbatm, "Passing control to firmware failed: %d\n", ret); 1058 return; 1059 } 1060 1061 /* Delay to allow firmware to start up. */ 1062 msleep_interruptible(1000); 1063 1064 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD)); 1065 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD)); 1066 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA)); 1067 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA)); 1068 1069 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); 1070 if (ret < 0) { 1071 usb_err(usbatm, "modem failed to initialize: %d\n", ret); 1072 return; 1073 } 1074 } 1075 1076 static int cxacru_find_firmware(struct cxacru_data *instance, 1077 char *phase, const struct firmware **fw_p) 1078 { 1079 struct usbatm_data *usbatm = instance->usbatm; 1080 struct device *dev = &usbatm->usb_intf->dev; 1081 char buf[16]; 1082 1083 sprintf(buf, "cxacru-%s.bin", phase); 1084 usb_dbg(usbatm, "cxacru_find_firmware: looking for %s\n", buf); 1085 1086 if (request_firmware(fw_p, buf, dev)) { 1087 usb_dbg(usbatm, "no stage %s firmware found\n", phase); 1088 return -ENOENT; 1089 } 1090 1091 usb_info(usbatm, "found firmware %s\n", buf); 1092 1093 return 0; 1094 } 1095 1096 static int cxacru_heavy_init(struct usbatm_data *usbatm_instance, 1097 struct usb_interface *usb_intf) 1098 { 1099 const struct firmware *fw, *bp; 1100 struct cxacru_data *instance = usbatm_instance->driver_data; 1101 int ret = cxacru_find_firmware(instance, "fw", &fw); 1102 1103 if (ret) { 1104 usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n"); 1105 return ret; 1106 } 1107 1108 if (instance->modem_type->boot_rom_patch) { 1109 ret = cxacru_find_firmware(instance, "bp", &bp); 1110 if (ret) { 1111 usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n"); 1112 release_firmware(fw); 1113 return ret; 1114 } 1115 } 1116 1117 cxacru_upload_firmware(instance, fw, bp); 1118 1119 if (instance->modem_type->boot_rom_patch) 1120 release_firmware(bp); 1121 release_firmware(fw); 1122 1123 ret = cxacru_card_status(instance); 1124 if (ret) 1125 usb_dbg(usbatm_instance, "modem initialisation failed\n"); 1126 else 1127 usb_dbg(usbatm_instance, "done setting up the modem\n"); 1128 1129 return ret; 1130 } 1131 1132 static int cxacru_bind(struct usbatm_data *usbatm_instance, 1133 struct usb_interface *intf, const struct usb_device_id *id) 1134 { 1135 struct cxacru_data *instance; 1136 struct usb_device *usb_dev = interface_to_usbdev(intf); 1137 struct usb_host_endpoint *cmd_ep = usb_dev->ep_in[CXACRU_EP_CMD]; 1138 int ret; 1139 1140 /* instance init */ 1141 instance = kzalloc(sizeof(*instance), GFP_KERNEL); 1142 if (!instance) 1143 return -ENOMEM; 1144 1145 instance->usbatm = usbatm_instance; 1146 instance->modem_type = (struct cxacru_modem_type *) id->driver_info; 1147 1148 mutex_init(&instance->poll_state_serialize); 1149 instance->poll_state = CXPOLL_STOPPED; 1150 instance->line_status = -1; 1151 instance->adsl_status = -1; 1152 1153 mutex_init(&instance->adsl_state_serialize); 1154 1155 instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL); 1156 if (!instance->rcv_buf) { 1157 usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_buf\n"); 1158 ret = -ENOMEM; 1159 goto fail; 1160 } 1161 instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL); 1162 if (!instance->snd_buf) { 1163 usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_buf\n"); 1164 ret = -ENOMEM; 1165 goto fail; 1166 } 1167 instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL); 1168 if (!instance->rcv_urb) { 1169 ret = -ENOMEM; 1170 goto fail; 1171 } 1172 instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL); 1173 if (!instance->snd_urb) { 1174 ret = -ENOMEM; 1175 goto fail; 1176 } 1177 1178 if (!cmd_ep) { 1179 usb_dbg(usbatm_instance, "cxacru_bind: no command endpoint\n"); 1180 ret = -ENODEV; 1181 goto fail; 1182 } 1183 1184 if ((cmd_ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1185 == USB_ENDPOINT_XFER_INT) { 1186 usb_fill_int_urb(instance->rcv_urb, 1187 usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD), 1188 instance->rcv_buf, PAGE_SIZE, 1189 cxacru_blocking_completion, &instance->rcv_done, 1); 1190 1191 usb_fill_int_urb(instance->snd_urb, 1192 usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD), 1193 instance->snd_buf, PAGE_SIZE, 1194 cxacru_blocking_completion, &instance->snd_done, 4); 1195 } else { 1196 usb_fill_bulk_urb(instance->rcv_urb, 1197 usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD), 1198 instance->rcv_buf, PAGE_SIZE, 1199 cxacru_blocking_completion, &instance->rcv_done); 1200 1201 usb_fill_bulk_urb(instance->snd_urb, 1202 usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), 1203 instance->snd_buf, PAGE_SIZE, 1204 cxacru_blocking_completion, &instance->snd_done); 1205 } 1206 1207 mutex_init(&instance->cm_serialize); 1208 1209 INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status); 1210 1211 usbatm_instance->driver_data = instance; 1212 1213 usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT); 1214 1215 return 0; 1216 1217 fail: 1218 free_page((unsigned long) instance->snd_buf); 1219 free_page((unsigned long) instance->rcv_buf); 1220 usb_free_urb(instance->snd_urb); 1221 usb_free_urb(instance->rcv_urb); 1222 kfree(instance); 1223 1224 return ret; 1225 } 1226 1227 static void cxacru_unbind(struct usbatm_data *usbatm_instance, 1228 struct usb_interface *intf) 1229 { 1230 struct cxacru_data *instance = usbatm_instance->driver_data; 1231 int is_polling = 1; 1232 1233 usb_dbg(usbatm_instance, "cxacru_unbind entered\n"); 1234 1235 if (!instance) { 1236 usb_dbg(usbatm_instance, "cxacru_unbind: NULL instance!\n"); 1237 return; 1238 } 1239 1240 mutex_lock(&instance->poll_state_serialize); 1241 BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN); 1242 1243 /* ensure that status polling continues unless 1244 * it has already stopped */ 1245 if (instance->poll_state == CXPOLL_STOPPED) 1246 is_polling = 0; 1247 1248 /* stop polling from being stopped or started */ 1249 instance->poll_state = CXPOLL_SHUTDOWN; 1250 mutex_unlock(&instance->poll_state_serialize); 1251 1252 if (is_polling) 1253 cancel_delayed_work_sync(&instance->poll_work); 1254 1255 usb_kill_urb(instance->snd_urb); 1256 usb_kill_urb(instance->rcv_urb); 1257 usb_free_urb(instance->snd_urb); 1258 usb_free_urb(instance->rcv_urb); 1259 1260 free_page((unsigned long) instance->snd_buf); 1261 free_page((unsigned long) instance->rcv_buf); 1262 1263 kfree(instance); 1264 1265 usbatm_instance->driver_data = NULL; 1266 } 1267 1268 static const struct cxacru_modem_type cxacru_cafe = { 1269 .pll_f_clk = 0x02d874df, 1270 .pll_b_clk = 0x0196a51a, 1271 .boot_rom_patch = 1, 1272 }; 1273 1274 static const struct cxacru_modem_type cxacru_cb00 = { 1275 .pll_f_clk = 0x5, 1276 .pll_b_clk = 0x3, 1277 .boot_rom_patch = 0, 1278 }; 1279 1280 static const struct usb_device_id cxacru_usb_ids[] = { 1281 { /* V = Conexant P = ADSL modem (Euphrates project) */ 1282 USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe 1283 }, 1284 { /* V = Conexant P = ADSL modem (Hasbani project) */ 1285 USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00 1286 }, 1287 { /* V = Conexant P = ADSL modem */ 1288 USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1289 }, 1290 { /* V = Conexant P = ADSL modem (Well PTI-800) */ 1291 USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00 1292 }, 1293 { /* V = Conexant P = ADSL modem */ 1294 USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00 1295 }, 1296 { /* V = Conexant P = ADSL modem (ZTE ZXDSL 852) */ 1297 USB_DEVICE(0x0572, 0xcb07), .driver_info = (unsigned long) &cxacru_cb00 1298 }, 1299 { /* V = Olitec P = ADSL modem version 2 */ 1300 USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe 1301 }, 1302 { /* V = Olitec P = ADSL modem version 3 */ 1303 USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00 1304 }, 1305 { /* V = Trust/Amigo Technology Co. P = AMX-CA86U */ 1306 USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe 1307 }, 1308 { /* V = Zoom P = 5510 */ 1309 USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00 1310 }, 1311 { /* V = Draytek P = Vigor 318 */ 1312 USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00 1313 }, 1314 { /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */ 1315 USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00 1316 }, 1317 { /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */ 1318 USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00 1319 }, 1320 { /* V = Aethra P = Starmodem UM1020 */ 1321 USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00 1322 }, 1323 { /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */ 1324 USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00 1325 }, 1326 { /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */ 1327 USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1328 }, 1329 { /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */ 1330 USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00 1331 }, 1332 {} 1333 }; 1334 1335 MODULE_DEVICE_TABLE(usb, cxacru_usb_ids); 1336 1337 static struct usbatm_driver cxacru_driver = { 1338 .driver_name = cxacru_driver_name, 1339 .bind = cxacru_bind, 1340 .heavy_init = cxacru_heavy_init, 1341 .unbind = cxacru_unbind, 1342 .atm_start = cxacru_atm_start, 1343 .atm_stop = cxacru_remove_device_files, 1344 .bulk_in = CXACRU_EP_DATA, 1345 .bulk_out = CXACRU_EP_DATA, 1346 .rx_padding = 3, 1347 .tx_padding = 11, 1348 }; 1349 1350 static int cxacru_usb_probe(struct usb_interface *intf, 1351 const struct usb_device_id *id) 1352 { 1353 struct usb_device *usb_dev = interface_to_usbdev(intf); 1354 char buf[15]; 1355 1356 /* Avoid ADSL routers (cx82310_eth). 1357 * Abort if bDeviceClass is 0xff and iProduct is "USB NET CARD". 1358 */ 1359 if (usb_dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC 1360 && usb_string(usb_dev, usb_dev->descriptor.iProduct, 1361 buf, sizeof(buf)) > 0) { 1362 if (!strcmp(buf, "USB NET CARD")) { 1363 dev_info(&intf->dev, "ignoring cx82310_eth device\n"); 1364 return -ENODEV; 1365 } 1366 } 1367 1368 return usbatm_usb_probe(intf, id, &cxacru_driver); 1369 } 1370 1371 static struct usb_driver cxacru_usb_driver = { 1372 .name = cxacru_driver_name, 1373 .probe = cxacru_usb_probe, 1374 .disconnect = usbatm_usb_disconnect, 1375 .id_table = cxacru_usb_ids 1376 }; 1377 1378 module_usb_driver(cxacru_usb_driver); 1379 1380 MODULE_AUTHOR(DRIVER_AUTHOR); 1381 MODULE_DESCRIPTION(DRIVER_DESC); 1382 MODULE_LICENSE("GPL"); 1383 MODULE_VERSION(DRIVER_VERSION); 1384