1 // SPDX-License-Identifier: GPL-2.0+ 2 /****************************************************************************** 3 * cxacru.c - driver for USB ADSL modems based on 4 * Conexant AccessRunner chipset 5 * 6 * Copyright (C) 2004 David Woodhouse, Duncan Sands, Roman Kagan 7 * Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru) 8 * Copyright (C) 2007 Simon Arlott 9 * Copyright (C) 2009 Simon Arlott 10 ******************************************************************************/ 11 12 /* 13 * Credit is due for Josep Comas, who created the original patch to speedtch.c 14 * to support the different padding used by the AccessRunner (now generalized 15 * into usbatm), and the userspace firmware loading utility. 16 */ 17 18 #include <linux/module.h> 19 #include <linux/moduleparam.h> 20 #include <linux/kernel.h> 21 #include <linux/timer.h> 22 #include <linux/errno.h> 23 #include <linux/slab.h> 24 #include <linux/device.h> 25 #include <linux/firmware.h> 26 #include <linux/mutex.h> 27 #include <asm/unaligned.h> 28 29 #include "usbatm.h" 30 31 #define DRIVER_AUTHOR "Roman Kagan, David Woodhouse, Duncan Sands, Simon Arlott" 32 #define DRIVER_DESC "Conexant AccessRunner ADSL USB modem driver" 33 34 static const char cxacru_driver_name[] = "cxacru"; 35 36 #define CXACRU_EP_CMD 0x01 /* Bulk/interrupt in/out */ 37 #define CXACRU_EP_DATA 0x02 /* Bulk in/out */ 38 39 #define CMD_PACKET_SIZE 64 /* Should be maxpacket(ep)? */ 40 #define CMD_MAX_CONFIG ((CMD_PACKET_SIZE / 4 - 1) / 2) 41 42 /* Addresses */ 43 #define PLLFCLK_ADDR 0x00350068 44 #define PLLBCLK_ADDR 0x0035006c 45 #define SDRAMEN_ADDR 0x00350010 46 #define FW_ADDR 0x00801000 47 #define BR_ADDR 0x00180600 48 #define SIG_ADDR 0x00180500 49 #define BR_STACK_ADDR 0x00187f10 50 51 /* Values */ 52 #define SDRAM_ENA 0x1 53 54 #define CMD_TIMEOUT 2000 /* msecs */ 55 #define POLL_INTERVAL 1 /* secs */ 56 57 /* commands for interaction with the modem through the control channel before 58 * firmware is loaded */ 59 enum cxacru_fw_request { 60 FW_CMD_ERR, 61 FW_GET_VER, 62 FW_READ_MEM, 63 FW_WRITE_MEM, 64 FW_RMW_MEM, 65 FW_CHECKSUM_MEM, 66 FW_GOTO_MEM, 67 }; 68 69 /* commands for interaction with the modem through the control channel once 70 * firmware is loaded */ 71 enum cxacru_cm_request { 72 CM_REQUEST_UNDEFINED = 0x80, 73 CM_REQUEST_TEST, 74 CM_REQUEST_CHIP_GET_MAC_ADDRESS, 75 CM_REQUEST_CHIP_GET_DP_VERSIONS, 76 CM_REQUEST_CHIP_ADSL_LINE_START, 77 CM_REQUEST_CHIP_ADSL_LINE_STOP, 78 CM_REQUEST_CHIP_ADSL_LINE_GET_STATUS, 79 CM_REQUEST_CHIP_ADSL_LINE_GET_SPEED, 80 CM_REQUEST_CARD_INFO_GET, 81 CM_REQUEST_CARD_DATA_GET, 82 CM_REQUEST_CARD_DATA_SET, 83 CM_REQUEST_COMMAND_HW_IO, 84 CM_REQUEST_INTERFACE_HW_IO, 85 CM_REQUEST_CARD_SERIAL_DATA_PATH_GET, 86 CM_REQUEST_CARD_SERIAL_DATA_PATH_SET, 87 CM_REQUEST_CARD_CONTROLLER_VERSION_GET, 88 CM_REQUEST_CARD_GET_STATUS, 89 CM_REQUEST_CARD_GET_MAC_ADDRESS, 90 CM_REQUEST_CARD_GET_DATA_LINK_STATUS, 91 CM_REQUEST_MAX, 92 }; 93 94 /* commands for interaction with the flash memory 95 * 96 * read: response is the contents of the first 60 bytes of flash memory 97 * write: request contains the 60 bytes of data to write to flash memory 98 * response is the contents of the first 60 bytes of flash memory 99 * 100 * layout: PP PP VV VV MM MM MM MM MM MM ?? ?? SS SS SS SS SS SS SS SS 101 * SS SS SS SS SS SS SS SS 00 00 00 00 00 00 00 00 00 00 00 00 102 * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 103 * 104 * P: le16 USB Product ID 105 * V: le16 USB Vendor ID 106 * M: be48 MAC Address 107 * S: le16 ASCII Serial Number 108 */ 109 enum cxacru_cm_flash { 110 CM_FLASH_READ = 0xa1, 111 CM_FLASH_WRITE = 0xa2 112 }; 113 114 /* reply codes to the commands above */ 115 enum cxacru_cm_status { 116 CM_STATUS_UNDEFINED, 117 CM_STATUS_SUCCESS, 118 CM_STATUS_ERROR, 119 CM_STATUS_UNSUPPORTED, 120 CM_STATUS_UNIMPLEMENTED, 121 CM_STATUS_PARAMETER_ERROR, 122 CM_STATUS_DBG_LOOPBACK, 123 CM_STATUS_MAX, 124 }; 125 126 /* indices into CARD_INFO_GET return array */ 127 enum cxacru_info_idx { 128 CXINF_DOWNSTREAM_RATE, 129 CXINF_UPSTREAM_RATE, 130 CXINF_LINK_STATUS, 131 CXINF_LINE_STATUS, 132 CXINF_MAC_ADDRESS_HIGH, 133 CXINF_MAC_ADDRESS_LOW, 134 CXINF_UPSTREAM_SNR_MARGIN, 135 CXINF_DOWNSTREAM_SNR_MARGIN, 136 CXINF_UPSTREAM_ATTENUATION, 137 CXINF_DOWNSTREAM_ATTENUATION, 138 CXINF_TRANSMITTER_POWER, 139 CXINF_UPSTREAM_BITS_PER_FRAME, 140 CXINF_DOWNSTREAM_BITS_PER_FRAME, 141 CXINF_STARTUP_ATTEMPTS, 142 CXINF_UPSTREAM_CRC_ERRORS, 143 CXINF_DOWNSTREAM_CRC_ERRORS, 144 CXINF_UPSTREAM_FEC_ERRORS, 145 CXINF_DOWNSTREAM_FEC_ERRORS, 146 CXINF_UPSTREAM_HEC_ERRORS, 147 CXINF_DOWNSTREAM_HEC_ERRORS, 148 CXINF_LINE_STARTABLE, 149 CXINF_MODULATION, 150 CXINF_ADSL_HEADEND, 151 CXINF_ADSL_HEADEND_ENVIRONMENT, 152 CXINF_CONTROLLER_VERSION, 153 /* dunno what the missing two mean */ 154 CXINF_MAX = 0x1c, 155 }; 156 157 enum cxacru_poll_state { 158 CXPOLL_STOPPING, 159 CXPOLL_STOPPED, 160 CXPOLL_POLLING, 161 CXPOLL_SHUTDOWN 162 }; 163 164 struct cxacru_modem_type { 165 u32 pll_f_clk; 166 u32 pll_b_clk; 167 int boot_rom_patch; 168 }; 169 170 struct cxacru_data { 171 struct usbatm_data *usbatm; 172 173 const struct cxacru_modem_type *modem_type; 174 175 int line_status; 176 struct mutex adsl_state_serialize; 177 int adsl_status; 178 struct delayed_work poll_work; 179 u32 card_info[CXINF_MAX]; 180 struct mutex poll_state_serialize; 181 enum cxacru_poll_state poll_state; 182 183 /* contol handles */ 184 struct mutex cm_serialize; 185 u8 *rcv_buf; 186 u8 *snd_buf; 187 struct urb *rcv_urb; 188 struct urb *snd_urb; 189 struct completion rcv_done; 190 struct completion snd_done; 191 }; 192 193 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, 194 u8 *wdata, int wsize, u8 *rdata, int rsize); 195 static void cxacru_poll_status(struct work_struct *work); 196 197 /* Card info exported through sysfs */ 198 #define CXACRU__ATTR_INIT(_name) \ 199 static DEVICE_ATTR_RO(_name) 200 201 #define CXACRU_CMD_INIT(_name) \ 202 static DEVICE_ATTR_RW(_name) 203 204 #define CXACRU_SET_INIT(_name) \ 205 static DEVICE_ATTR_WO(_name) 206 207 #define CXACRU_ATTR_INIT(_value, _type, _name) \ 208 static ssize_t _name##_show(struct device *dev, \ 209 struct device_attribute *attr, char *buf) \ 210 { \ 211 struct cxacru_data *instance = to_usbatm_driver_data(\ 212 to_usb_interface(dev)); \ 213 \ 214 if (instance == NULL) \ 215 return -ENODEV; \ 216 \ 217 return cxacru_sysfs_showattr_##_type(instance->card_info[_value], buf); \ 218 } \ 219 CXACRU__ATTR_INIT(_name) 220 221 #define CXACRU_ATTR_CREATE(_v, _t, _name) CXACRU_DEVICE_CREATE_FILE(_name) 222 #define CXACRU_CMD_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) 223 #define CXACRU_SET_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) 224 #define CXACRU__ATTR_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) 225 226 #define CXACRU_ATTR_REMOVE(_v, _t, _name) CXACRU_DEVICE_REMOVE_FILE(_name) 227 #define CXACRU_CMD_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) 228 #define CXACRU_SET_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) 229 #define CXACRU__ATTR_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) 230 231 static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf) 232 { 233 return snprintf(buf, PAGE_SIZE, "%u\n", value); 234 } 235 236 static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf) 237 { 238 return snprintf(buf, PAGE_SIZE, "%d\n", value); 239 } 240 241 static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf) 242 { 243 if (likely(value >= 0)) { 244 return snprintf(buf, PAGE_SIZE, "%u.%02u\n", 245 value / 100, value % 100); 246 } else { 247 value = -value; 248 return snprintf(buf, PAGE_SIZE, "-%u.%02u\n", 249 value / 100, value % 100); 250 } 251 } 252 253 static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf) 254 { 255 static char *str[] = { "no", "yes" }; 256 257 if (unlikely(value >= ARRAY_SIZE(str))) 258 return snprintf(buf, PAGE_SIZE, "%u\n", value); 259 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 260 } 261 262 static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf) 263 { 264 static char *str[] = { NULL, "not connected", "connected", "lost" }; 265 266 if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL)) 267 return snprintf(buf, PAGE_SIZE, "%u\n", value); 268 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 269 } 270 271 static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf) 272 { 273 static char *str[] = { "down", "attempting to activate", 274 "training", "channel analysis", "exchange", "up", 275 "waiting", "initialising" 276 }; 277 if (unlikely(value >= ARRAY_SIZE(str))) 278 return snprintf(buf, PAGE_SIZE, "%u\n", value); 279 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 280 } 281 282 static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf) 283 { 284 static char *str[] = { 285 "", 286 "ANSI T1.413", 287 "ITU-T G.992.1 (G.DMT)", 288 "ITU-T G.992.2 (G.LITE)" 289 }; 290 if (unlikely(value >= ARRAY_SIZE(str))) 291 return snprintf(buf, PAGE_SIZE, "%u\n", value); 292 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 293 } 294 295 /* 296 * This could use MAC_ADDRESS_HIGH and MAC_ADDRESS_LOW, but since 297 * this data is already in atm_dev there's no point. 298 * 299 * MAC_ADDRESS_HIGH = 0x????5544 300 * MAC_ADDRESS_LOW = 0x33221100 301 * Where 00-55 are bytes 0-5 of the MAC. 302 */ 303 static ssize_t mac_address_show(struct device *dev, 304 struct device_attribute *attr, char *buf) 305 { 306 struct cxacru_data *instance = to_usbatm_driver_data( 307 to_usb_interface(dev)); 308 309 if (instance == NULL || instance->usbatm->atm_dev == NULL) 310 return -ENODEV; 311 312 return snprintf(buf, PAGE_SIZE, "%pM\n", 313 instance->usbatm->atm_dev->esi); 314 } 315 316 static ssize_t adsl_state_show(struct device *dev, 317 struct device_attribute *attr, char *buf) 318 { 319 static char *str[] = { "running", "stopped" }; 320 struct cxacru_data *instance = to_usbatm_driver_data( 321 to_usb_interface(dev)); 322 u32 value; 323 324 if (instance == NULL) 325 return -ENODEV; 326 327 value = instance->card_info[CXINF_LINE_STARTABLE]; 328 if (unlikely(value >= ARRAY_SIZE(str))) 329 return snprintf(buf, PAGE_SIZE, "%u\n", value); 330 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 331 } 332 333 static ssize_t adsl_state_store(struct device *dev, 334 struct device_attribute *attr, const char *buf, size_t count) 335 { 336 struct cxacru_data *instance = to_usbatm_driver_data( 337 to_usb_interface(dev)); 338 int ret; 339 int poll = -1; 340 char str_cmd[8]; 341 int len = strlen(buf); 342 343 if (!capable(CAP_NET_ADMIN)) 344 return -EACCES; 345 346 ret = sscanf(buf, "%7s", str_cmd); 347 if (ret != 1) 348 return -EINVAL; 349 ret = 0; 350 351 if (instance == NULL) 352 return -ENODEV; 353 354 if (mutex_lock_interruptible(&instance->adsl_state_serialize)) 355 return -ERESTARTSYS; 356 357 if (!strcmp(str_cmd, "stop") || !strcmp(str_cmd, "restart")) { 358 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_STOP, NULL, 0, NULL, 0); 359 if (ret < 0) { 360 atm_err(instance->usbatm, "change adsl state:" 361 " CHIP_ADSL_LINE_STOP returned %d\n", ret); 362 363 ret = -EIO; 364 } else { 365 ret = len; 366 poll = CXPOLL_STOPPED; 367 } 368 } 369 370 /* Line status is only updated every second 371 * and the device appears to only react to 372 * START/STOP every second too. Wait 1.5s to 373 * be sure that restart will have an effect. */ 374 if (!strcmp(str_cmd, "restart")) 375 msleep(1500); 376 377 if (!strcmp(str_cmd, "start") || !strcmp(str_cmd, "restart")) { 378 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0); 379 if (ret < 0) { 380 atm_err(instance->usbatm, "change adsl state:" 381 " CHIP_ADSL_LINE_START returned %d\n", ret); 382 383 ret = -EIO; 384 } else { 385 ret = len; 386 poll = CXPOLL_POLLING; 387 } 388 } 389 390 if (!strcmp(str_cmd, "poll")) { 391 ret = len; 392 poll = CXPOLL_POLLING; 393 } 394 395 if (ret == 0) { 396 ret = -EINVAL; 397 poll = -1; 398 } 399 400 if (poll == CXPOLL_POLLING) { 401 mutex_lock(&instance->poll_state_serialize); 402 switch (instance->poll_state) { 403 case CXPOLL_STOPPED: 404 /* start polling */ 405 instance->poll_state = CXPOLL_POLLING; 406 break; 407 408 case CXPOLL_STOPPING: 409 /* abort stop request */ 410 instance->poll_state = CXPOLL_POLLING; 411 /* fall through */ 412 case CXPOLL_POLLING: 413 case CXPOLL_SHUTDOWN: 414 /* don't start polling */ 415 poll = -1; 416 } 417 mutex_unlock(&instance->poll_state_serialize); 418 } else if (poll == CXPOLL_STOPPED) { 419 mutex_lock(&instance->poll_state_serialize); 420 /* request stop */ 421 if (instance->poll_state == CXPOLL_POLLING) 422 instance->poll_state = CXPOLL_STOPPING; 423 mutex_unlock(&instance->poll_state_serialize); 424 } 425 426 mutex_unlock(&instance->adsl_state_serialize); 427 428 if (poll == CXPOLL_POLLING) 429 cxacru_poll_status(&instance->poll_work.work); 430 431 return ret; 432 } 433 434 /* CM_REQUEST_CARD_DATA_GET times out, so no show attribute */ 435 436 static ssize_t adsl_config_store(struct device *dev, 437 struct device_attribute *attr, const char *buf, size_t count) 438 { 439 struct cxacru_data *instance = to_usbatm_driver_data( 440 to_usb_interface(dev)); 441 int len = strlen(buf); 442 int ret, pos, num; 443 __le32 data[CMD_PACKET_SIZE / 4]; 444 445 if (!capable(CAP_NET_ADMIN)) 446 return -EACCES; 447 448 if (instance == NULL) 449 return -ENODEV; 450 451 pos = 0; 452 num = 0; 453 while (pos < len) { 454 int tmp; 455 u32 index; 456 u32 value; 457 458 ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp); 459 if (ret < 2) 460 return -EINVAL; 461 if (index > 0x7f) 462 return -EINVAL; 463 if (tmp < 0 || tmp > len - pos) 464 return -EINVAL; 465 pos += tmp; 466 467 /* skip trailing newline */ 468 if (buf[pos] == '\n' && pos == len-1) 469 pos++; 470 471 data[num * 2 + 1] = cpu_to_le32(index); 472 data[num * 2 + 2] = cpu_to_le32(value); 473 num++; 474 475 /* send config values when data buffer is full 476 * or no more data 477 */ 478 if (pos >= len || num >= CMD_MAX_CONFIG) { 479 char log[CMD_MAX_CONFIG * 12 + 1]; /* %02x=%08x */ 480 481 data[0] = cpu_to_le32(num); 482 ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET, 483 (u8 *) data, 4 + num * 8, NULL, 0); 484 if (ret < 0) { 485 atm_err(instance->usbatm, 486 "set card data returned %d\n", ret); 487 return -EIO; 488 } 489 490 for (tmp = 0; tmp < num; tmp++) 491 snprintf(log + tmp*12, 13, " %02x=%08x", 492 le32_to_cpu(data[tmp * 2 + 1]), 493 le32_to_cpu(data[tmp * 2 + 2])); 494 atm_info(instance->usbatm, "config%s\n", log); 495 num = 0; 496 } 497 } 498 499 return len; 500 } 501 502 /* 503 * All device attributes are included in CXACRU_ALL_FILES 504 * so that the same list can be used multiple times: 505 * INIT (define the device attributes) 506 * CREATE (create all the device files) 507 * REMOVE (remove all the device files) 508 * 509 * With the last two being defined as needed in the functions 510 * they are used in before calling CXACRU_ALL_FILES() 511 */ 512 #define CXACRU_ALL_FILES(_action) \ 513 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_RATE, u32, downstream_rate); \ 514 CXACRU_ATTR_##_action(CXINF_UPSTREAM_RATE, u32, upstream_rate); \ 515 CXACRU_ATTR_##_action(CXINF_LINK_STATUS, LINK, link_status); \ 516 CXACRU_ATTR_##_action(CXINF_LINE_STATUS, LINE, line_status); \ 517 CXACRU__ATTR_##_action( mac_address); \ 518 CXACRU_ATTR_##_action(CXINF_UPSTREAM_SNR_MARGIN, dB, upstream_snr_margin); \ 519 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_SNR_MARGIN, dB, downstream_snr_margin); \ 520 CXACRU_ATTR_##_action(CXINF_UPSTREAM_ATTENUATION, dB, upstream_attenuation); \ 521 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_ATTENUATION, dB, downstream_attenuation); \ 522 CXACRU_ATTR_##_action(CXINF_TRANSMITTER_POWER, s8, transmitter_power); \ 523 CXACRU_ATTR_##_action(CXINF_UPSTREAM_BITS_PER_FRAME, u32, upstream_bits_per_frame); \ 524 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_BITS_PER_FRAME, u32, downstream_bits_per_frame); \ 525 CXACRU_ATTR_##_action(CXINF_STARTUP_ATTEMPTS, u32, startup_attempts); \ 526 CXACRU_ATTR_##_action(CXINF_UPSTREAM_CRC_ERRORS, u32, upstream_crc_errors); \ 527 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_CRC_ERRORS, u32, downstream_crc_errors); \ 528 CXACRU_ATTR_##_action(CXINF_UPSTREAM_FEC_ERRORS, u32, upstream_fec_errors); \ 529 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_FEC_ERRORS, u32, downstream_fec_errors); \ 530 CXACRU_ATTR_##_action(CXINF_UPSTREAM_HEC_ERRORS, u32, upstream_hec_errors); \ 531 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_HEC_ERRORS, u32, downstream_hec_errors); \ 532 CXACRU_ATTR_##_action(CXINF_LINE_STARTABLE, bool, line_startable); \ 533 CXACRU_ATTR_##_action(CXINF_MODULATION, MODU, modulation); \ 534 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND, u32, adsl_headend); \ 535 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT, u32, adsl_headend_environment); \ 536 CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION, u32, adsl_controller_version); \ 537 CXACRU_CMD_##_action( adsl_state); \ 538 CXACRU_SET_##_action( adsl_config); 539 540 CXACRU_ALL_FILES(INIT); 541 542 /* the following three functions are stolen from drivers/usb/core/message.c */ 543 static void cxacru_blocking_completion(struct urb *urb) 544 { 545 complete(urb->context); 546 } 547 548 struct cxacru_timer { 549 struct timer_list timer; 550 struct urb *urb; 551 }; 552 553 static void cxacru_timeout_kill(struct timer_list *t) 554 { 555 struct cxacru_timer *timer = from_timer(timer, t, timer); 556 557 usb_unlink_urb(timer->urb); 558 } 559 560 static int cxacru_start_wait_urb(struct urb *urb, struct completion *done, 561 int *actual_length) 562 { 563 struct cxacru_timer timer = { 564 .urb = urb, 565 }; 566 567 timer_setup_on_stack(&timer.timer, cxacru_timeout_kill, 0); 568 mod_timer(&timer.timer, jiffies + msecs_to_jiffies(CMD_TIMEOUT)); 569 wait_for_completion(done); 570 del_timer_sync(&timer.timer); 571 destroy_timer_on_stack(&timer.timer); 572 573 if (actual_length) 574 *actual_length = urb->actual_length; 575 return urb->status; /* must read status after completion */ 576 } 577 578 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, 579 u8 *wdata, int wsize, u8 *rdata, int rsize) 580 { 581 int ret, actlen; 582 int offb, offd; 583 const int stride = CMD_PACKET_SIZE - 4; 584 u8 *wbuf = instance->snd_buf; 585 u8 *rbuf = instance->rcv_buf; 586 int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE; 587 int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE; 588 589 if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) { 590 if (printk_ratelimit()) 591 usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n", 592 wbuflen, rbuflen); 593 ret = -ENOMEM; 594 goto err; 595 } 596 597 mutex_lock(&instance->cm_serialize); 598 599 /* submit reading urb before the writing one */ 600 init_completion(&instance->rcv_done); 601 ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL); 602 if (ret < 0) { 603 if (printk_ratelimit()) 604 usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n", 605 cm, ret); 606 goto fail; 607 } 608 609 memset(wbuf, 0, wbuflen); 610 /* handle wsize == 0 */ 611 wbuf[0] = cm; 612 for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) { 613 wbuf[offb] = cm; 614 memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd)); 615 } 616 617 instance->snd_urb->transfer_buffer_length = wbuflen; 618 init_completion(&instance->snd_done); 619 ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL); 620 if (ret < 0) { 621 if (printk_ratelimit()) 622 usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n", 623 cm, ret); 624 goto fail; 625 } 626 627 ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL); 628 if (ret < 0) { 629 if (printk_ratelimit()) 630 usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret); 631 goto fail; 632 } 633 634 ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen); 635 if (ret < 0) { 636 if (printk_ratelimit()) 637 usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret); 638 goto fail; 639 } 640 if (actlen % CMD_PACKET_SIZE || !actlen) { 641 if (printk_ratelimit()) 642 usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n", 643 cm, actlen); 644 ret = -EIO; 645 goto fail; 646 } 647 648 /* check the return status and copy the data to the output buffer, if needed */ 649 for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) { 650 if (rbuf[offb] != cm) { 651 if (printk_ratelimit()) 652 usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n", 653 rbuf[offb], cm); 654 ret = -EIO; 655 goto fail; 656 } 657 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) { 658 if (printk_ratelimit()) 659 usb_err(instance->usbatm, "response to cm %#x failed: %#x\n", 660 cm, rbuf[offb + 1]); 661 ret = -EIO; 662 goto fail; 663 } 664 if (offd >= rsize) 665 break; 666 memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd)); 667 offd += stride; 668 } 669 670 ret = offd; 671 usb_dbg(instance->usbatm, "cm %#x\n", cm); 672 fail: 673 mutex_unlock(&instance->cm_serialize); 674 err: 675 return ret; 676 } 677 678 static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm, 679 u32 *data, int size) 680 { 681 int ret, len; 682 __le32 *buf; 683 int offb; 684 unsigned int offd; 685 const int stride = CMD_PACKET_SIZE / (4 * 2) - 1; 686 int buflen = ((size - 1) / stride + 1 + size * 2) * 4; 687 688 buf = kmalloc(buflen, GFP_KERNEL); 689 if (!buf) 690 return -ENOMEM; 691 692 ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen); 693 if (ret < 0) 694 goto cleanup; 695 696 /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */ 697 len = ret / 4; 698 for (offb = 0; offb < len; ) { 699 int l = le32_to_cpu(buf[offb++]); 700 701 if (l < 0 || l > stride || l > (len - offb) / 2) { 702 if (printk_ratelimit()) 703 usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n", 704 cm, l); 705 ret = -EIO; 706 goto cleanup; 707 } 708 while (l--) { 709 offd = le32_to_cpu(buf[offb++]); 710 if (offd >= size) { 711 if (printk_ratelimit()) 712 usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n", 713 offd, cm); 714 ret = -EIO; 715 goto cleanup; 716 } 717 data[offd] = le32_to_cpu(buf[offb++]); 718 } 719 } 720 721 ret = 0; 722 723 cleanup: 724 kfree(buf); 725 return ret; 726 } 727 728 static int cxacru_card_status(struct cxacru_data *instance) 729 { 730 int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); 731 732 if (ret < 0) { /* firmware not loaded */ 733 usb_dbg(instance->usbatm, "cxacru_adsl_start: CARD_GET_STATUS returned %d\n", ret); 734 return ret; 735 } 736 return 0; 737 } 738 739 static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance, 740 struct atm_dev *atm_dev) 741 { 742 struct usb_interface *intf = usbatm_instance->usb_intf; 743 744 #define CXACRU_DEVICE_REMOVE_FILE(_name) \ 745 device_remove_file(&intf->dev, &dev_attr_##_name); 746 CXACRU_ALL_FILES(REMOVE); 747 #undef CXACRU_DEVICE_REMOVE_FILE 748 } 749 750 static int cxacru_atm_start(struct usbatm_data *usbatm_instance, 751 struct atm_dev *atm_dev) 752 { 753 struct cxacru_data *instance = usbatm_instance->driver_data; 754 struct usb_interface *intf = usbatm_instance->usb_intf; 755 int ret; 756 int start_polling = 1; 757 758 dev_dbg(&intf->dev, "%s\n", __func__); 759 760 /* Read MAC address */ 761 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0, 762 atm_dev->esi, sizeof(atm_dev->esi)); 763 if (ret < 0) { 764 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret); 765 return ret; 766 } 767 768 #define CXACRU_DEVICE_CREATE_FILE(_name) \ 769 ret = device_create_file(&intf->dev, &dev_attr_##_name); \ 770 if (unlikely(ret)) \ 771 goto fail_sysfs; 772 CXACRU_ALL_FILES(CREATE); 773 #undef CXACRU_DEVICE_CREATE_FILE 774 775 /* start ADSL */ 776 mutex_lock(&instance->adsl_state_serialize); 777 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0); 778 if (ret < 0) 779 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret); 780 781 /* Start status polling */ 782 mutex_lock(&instance->poll_state_serialize); 783 switch (instance->poll_state) { 784 case CXPOLL_STOPPED: 785 /* start polling */ 786 instance->poll_state = CXPOLL_POLLING; 787 break; 788 789 case CXPOLL_STOPPING: 790 /* abort stop request */ 791 instance->poll_state = CXPOLL_POLLING; 792 /* fall through */ 793 case CXPOLL_POLLING: 794 case CXPOLL_SHUTDOWN: 795 /* don't start polling */ 796 start_polling = 0; 797 } 798 mutex_unlock(&instance->poll_state_serialize); 799 mutex_unlock(&instance->adsl_state_serialize); 800 801 printk(KERN_INFO "%s%d: %s %pM\n", atm_dev->type, atm_dev->number, 802 usbatm_instance->description, atm_dev->esi); 803 804 if (start_polling) 805 cxacru_poll_status(&instance->poll_work.work); 806 return 0; 807 808 fail_sysfs: 809 usb_err(usbatm_instance, "cxacru_atm_start: device_create_file failed (%d)\n", ret); 810 cxacru_remove_device_files(usbatm_instance, atm_dev); 811 return ret; 812 } 813 814 static void cxacru_poll_status(struct work_struct *work) 815 { 816 struct cxacru_data *instance = 817 container_of(work, struct cxacru_data, poll_work.work); 818 u32 buf[CXINF_MAX] = {}; 819 struct usbatm_data *usbatm = instance->usbatm; 820 struct atm_dev *atm_dev = usbatm->atm_dev; 821 int keep_polling = 1; 822 int ret; 823 824 ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX); 825 if (ret < 0) { 826 if (ret != -ESHUTDOWN) 827 atm_warn(usbatm, "poll status: error %d\n", ret); 828 829 mutex_lock(&instance->poll_state_serialize); 830 if (instance->poll_state != CXPOLL_SHUTDOWN) { 831 instance->poll_state = CXPOLL_STOPPED; 832 833 if (ret != -ESHUTDOWN) 834 atm_warn(usbatm, "polling disabled, set adsl_state" 835 " to 'start' or 'poll' to resume\n"); 836 } 837 mutex_unlock(&instance->poll_state_serialize); 838 goto reschedule; 839 } 840 841 memcpy(instance->card_info, buf, sizeof(instance->card_info)); 842 843 if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) { 844 instance->adsl_status = buf[CXINF_LINE_STARTABLE]; 845 846 switch (instance->adsl_status) { 847 case 0: 848 atm_printk(KERN_INFO, usbatm, "ADSL state: running\n"); 849 break; 850 851 case 1: 852 atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n"); 853 break; 854 855 default: 856 atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status); 857 break; 858 } 859 } 860 861 if (instance->line_status == buf[CXINF_LINE_STATUS]) 862 goto reschedule; 863 864 instance->line_status = buf[CXINF_LINE_STATUS]; 865 switch (instance->line_status) { 866 case 0: 867 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 868 atm_info(usbatm, "ADSL line: down\n"); 869 break; 870 871 case 1: 872 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 873 atm_info(usbatm, "ADSL line: attempting to activate\n"); 874 break; 875 876 case 2: 877 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 878 atm_info(usbatm, "ADSL line: training\n"); 879 break; 880 881 case 3: 882 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 883 atm_info(usbatm, "ADSL line: channel analysis\n"); 884 break; 885 886 case 4: 887 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 888 atm_info(usbatm, "ADSL line: exchange\n"); 889 break; 890 891 case 5: 892 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424; 893 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_FOUND); 894 895 atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n", 896 buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]); 897 break; 898 899 case 6: 900 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 901 atm_info(usbatm, "ADSL line: waiting\n"); 902 break; 903 904 case 7: 905 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 906 atm_info(usbatm, "ADSL line: initializing\n"); 907 break; 908 909 default: 910 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_UNKNOWN); 911 atm_info(usbatm, "Unknown line state %02x\n", instance->line_status); 912 break; 913 } 914 reschedule: 915 916 mutex_lock(&instance->poll_state_serialize); 917 if (instance->poll_state == CXPOLL_STOPPING && 918 instance->adsl_status == 1 && /* stopped */ 919 instance->line_status == 0) /* down */ 920 instance->poll_state = CXPOLL_STOPPED; 921 922 if (instance->poll_state == CXPOLL_STOPPED) 923 keep_polling = 0; 924 mutex_unlock(&instance->poll_state_serialize); 925 926 if (keep_polling) 927 schedule_delayed_work(&instance->poll_work, 928 round_jiffies_relative(POLL_INTERVAL*HZ)); 929 } 930 931 static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw, 932 u8 code1, u8 code2, u32 addr, const u8 *data, int size) 933 { 934 int ret; 935 u8 *buf; 936 int offd, offb; 937 const int stride = CMD_PACKET_SIZE - 8; 938 939 buf = (u8 *) __get_free_page(GFP_KERNEL); 940 if (!buf) 941 return -ENOMEM; 942 943 offb = offd = 0; 944 do { 945 int l = min_t(int, stride, size - offd); 946 947 buf[offb++] = fw; 948 buf[offb++] = l; 949 buf[offb++] = code1; 950 buf[offb++] = code2; 951 put_unaligned(cpu_to_le32(addr), (__le32 *)(buf + offb)); 952 offb += 4; 953 addr += l; 954 if (l) 955 memcpy(buf + offb, data + offd, l); 956 if (l < stride) 957 memset(buf + offb + l, 0, stride - l); 958 offb += stride; 959 offd += stride; 960 if ((offb >= PAGE_SIZE) || (offd >= size)) { 961 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), 962 buf, offb, NULL, CMD_TIMEOUT); 963 if (ret < 0) { 964 dev_dbg(&usb_dev->dev, "sending fw %#x failed\n", fw); 965 goto cleanup; 966 } 967 offb = 0; 968 } 969 } while (offd < size); 970 dev_dbg(&usb_dev->dev, "sent fw %#x\n", fw); 971 972 ret = 0; 973 974 cleanup: 975 free_page((unsigned long) buf); 976 return ret; 977 } 978 979 static void cxacru_upload_firmware(struct cxacru_data *instance, 980 const struct firmware *fw, 981 const struct firmware *bp) 982 { 983 int ret; 984 struct usbatm_data *usbatm = instance->usbatm; 985 struct usb_device *usb_dev = usbatm->usb_dev; 986 __le16 signature[] = { usb_dev->descriptor.idVendor, 987 usb_dev->descriptor.idProduct }; 988 __le32 val; 989 990 usb_dbg(usbatm, "%s\n", __func__); 991 992 /* FirmwarePllFClkValue */ 993 val = cpu_to_le32(instance->modem_type->pll_f_clk); 994 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4); 995 if (ret) { 996 usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret); 997 return; 998 } 999 1000 /* FirmwarePllBClkValue */ 1001 val = cpu_to_le32(instance->modem_type->pll_b_clk); 1002 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4); 1003 if (ret) { 1004 usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret); 1005 return; 1006 } 1007 1008 /* Enable SDRAM */ 1009 val = cpu_to_le32(SDRAM_ENA); 1010 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4); 1011 if (ret) { 1012 usb_err(usbatm, "Enable SDRAM failed: %d\n", ret); 1013 return; 1014 } 1015 1016 /* Firmware */ 1017 usb_info(usbatm, "loading firmware\n"); 1018 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size); 1019 if (ret) { 1020 usb_err(usbatm, "Firmware upload failed: %d\n", ret); 1021 return; 1022 } 1023 1024 /* Boot ROM patch */ 1025 if (instance->modem_type->boot_rom_patch) { 1026 usb_info(usbatm, "loading boot ROM patch\n"); 1027 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size); 1028 if (ret) { 1029 usb_err(usbatm, "Boot ROM patching failed: %d\n", ret); 1030 return; 1031 } 1032 } 1033 1034 /* Signature */ 1035 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4); 1036 if (ret) { 1037 usb_err(usbatm, "Signature storing failed: %d\n", ret); 1038 return; 1039 } 1040 1041 usb_info(usbatm, "starting device\n"); 1042 if (instance->modem_type->boot_rom_patch) { 1043 val = cpu_to_le32(BR_ADDR); 1044 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4); 1045 } else { 1046 ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0); 1047 } 1048 if (ret) { 1049 usb_err(usbatm, "Passing control to firmware failed: %d\n", ret); 1050 return; 1051 } 1052 1053 /* Delay to allow firmware to start up. */ 1054 msleep_interruptible(1000); 1055 1056 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD)); 1057 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD)); 1058 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA)); 1059 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA)); 1060 1061 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); 1062 if (ret < 0) { 1063 usb_err(usbatm, "modem failed to initialize: %d\n", ret); 1064 return; 1065 } 1066 } 1067 1068 static int cxacru_find_firmware(struct cxacru_data *instance, 1069 char *phase, const struct firmware **fw_p) 1070 { 1071 struct usbatm_data *usbatm = instance->usbatm; 1072 struct device *dev = &usbatm->usb_intf->dev; 1073 char buf[16]; 1074 1075 sprintf(buf, "cxacru-%s.bin", phase); 1076 usb_dbg(usbatm, "cxacru_find_firmware: looking for %s\n", buf); 1077 1078 if (request_firmware(fw_p, buf, dev)) { 1079 usb_dbg(usbatm, "no stage %s firmware found\n", phase); 1080 return -ENOENT; 1081 } 1082 1083 usb_info(usbatm, "found firmware %s\n", buf); 1084 1085 return 0; 1086 } 1087 1088 static int cxacru_heavy_init(struct usbatm_data *usbatm_instance, 1089 struct usb_interface *usb_intf) 1090 { 1091 const struct firmware *fw, *bp; 1092 struct cxacru_data *instance = usbatm_instance->driver_data; 1093 int ret = cxacru_find_firmware(instance, "fw", &fw); 1094 1095 if (ret) { 1096 usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n"); 1097 return ret; 1098 } 1099 1100 if (instance->modem_type->boot_rom_patch) { 1101 ret = cxacru_find_firmware(instance, "bp", &bp); 1102 if (ret) { 1103 usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n"); 1104 release_firmware(fw); 1105 return ret; 1106 } 1107 } 1108 1109 cxacru_upload_firmware(instance, fw, bp); 1110 1111 if (instance->modem_type->boot_rom_patch) 1112 release_firmware(bp); 1113 release_firmware(fw); 1114 1115 ret = cxacru_card_status(instance); 1116 if (ret) 1117 usb_dbg(usbatm_instance, "modem initialisation failed\n"); 1118 else 1119 usb_dbg(usbatm_instance, "done setting up the modem\n"); 1120 1121 return ret; 1122 } 1123 1124 static int cxacru_bind(struct usbatm_data *usbatm_instance, 1125 struct usb_interface *intf, const struct usb_device_id *id) 1126 { 1127 struct cxacru_data *instance; 1128 struct usb_device *usb_dev = interface_to_usbdev(intf); 1129 struct usb_host_endpoint *cmd_ep = usb_dev->ep_in[CXACRU_EP_CMD]; 1130 int ret; 1131 1132 /* instance init */ 1133 instance = kzalloc(sizeof(*instance), GFP_KERNEL); 1134 if (!instance) 1135 return -ENOMEM; 1136 1137 instance->usbatm = usbatm_instance; 1138 instance->modem_type = (struct cxacru_modem_type *) id->driver_info; 1139 1140 mutex_init(&instance->poll_state_serialize); 1141 instance->poll_state = CXPOLL_STOPPED; 1142 instance->line_status = -1; 1143 instance->adsl_status = -1; 1144 1145 mutex_init(&instance->adsl_state_serialize); 1146 1147 instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL); 1148 if (!instance->rcv_buf) { 1149 usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_buf\n"); 1150 ret = -ENOMEM; 1151 goto fail; 1152 } 1153 instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL); 1154 if (!instance->snd_buf) { 1155 usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_buf\n"); 1156 ret = -ENOMEM; 1157 goto fail; 1158 } 1159 instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL); 1160 if (!instance->rcv_urb) { 1161 ret = -ENOMEM; 1162 goto fail; 1163 } 1164 instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL); 1165 if (!instance->snd_urb) { 1166 ret = -ENOMEM; 1167 goto fail; 1168 } 1169 1170 if (!cmd_ep) { 1171 usb_dbg(usbatm_instance, "cxacru_bind: no command endpoint\n"); 1172 ret = -ENODEV; 1173 goto fail; 1174 } 1175 1176 if ((cmd_ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1177 == USB_ENDPOINT_XFER_INT) { 1178 usb_fill_int_urb(instance->rcv_urb, 1179 usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD), 1180 instance->rcv_buf, PAGE_SIZE, 1181 cxacru_blocking_completion, &instance->rcv_done, 1); 1182 1183 usb_fill_int_urb(instance->snd_urb, 1184 usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD), 1185 instance->snd_buf, PAGE_SIZE, 1186 cxacru_blocking_completion, &instance->snd_done, 4); 1187 } else { 1188 usb_fill_bulk_urb(instance->rcv_urb, 1189 usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD), 1190 instance->rcv_buf, PAGE_SIZE, 1191 cxacru_blocking_completion, &instance->rcv_done); 1192 1193 usb_fill_bulk_urb(instance->snd_urb, 1194 usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), 1195 instance->snd_buf, PAGE_SIZE, 1196 cxacru_blocking_completion, &instance->snd_done); 1197 } 1198 1199 mutex_init(&instance->cm_serialize); 1200 1201 INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status); 1202 1203 usbatm_instance->driver_data = instance; 1204 1205 usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT); 1206 1207 return 0; 1208 1209 fail: 1210 free_page((unsigned long) instance->snd_buf); 1211 free_page((unsigned long) instance->rcv_buf); 1212 usb_free_urb(instance->snd_urb); 1213 usb_free_urb(instance->rcv_urb); 1214 kfree(instance); 1215 1216 return ret; 1217 } 1218 1219 static void cxacru_unbind(struct usbatm_data *usbatm_instance, 1220 struct usb_interface *intf) 1221 { 1222 struct cxacru_data *instance = usbatm_instance->driver_data; 1223 int is_polling = 1; 1224 1225 usb_dbg(usbatm_instance, "cxacru_unbind entered\n"); 1226 1227 if (!instance) { 1228 usb_dbg(usbatm_instance, "cxacru_unbind: NULL instance!\n"); 1229 return; 1230 } 1231 1232 mutex_lock(&instance->poll_state_serialize); 1233 BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN); 1234 1235 /* ensure that status polling continues unless 1236 * it has already stopped */ 1237 if (instance->poll_state == CXPOLL_STOPPED) 1238 is_polling = 0; 1239 1240 /* stop polling from being stopped or started */ 1241 instance->poll_state = CXPOLL_SHUTDOWN; 1242 mutex_unlock(&instance->poll_state_serialize); 1243 1244 if (is_polling) 1245 cancel_delayed_work_sync(&instance->poll_work); 1246 1247 usb_kill_urb(instance->snd_urb); 1248 usb_kill_urb(instance->rcv_urb); 1249 usb_free_urb(instance->snd_urb); 1250 usb_free_urb(instance->rcv_urb); 1251 1252 free_page((unsigned long) instance->snd_buf); 1253 free_page((unsigned long) instance->rcv_buf); 1254 1255 kfree(instance); 1256 1257 usbatm_instance->driver_data = NULL; 1258 } 1259 1260 static const struct cxacru_modem_type cxacru_cafe = { 1261 .pll_f_clk = 0x02d874df, 1262 .pll_b_clk = 0x0196a51a, 1263 .boot_rom_patch = 1, 1264 }; 1265 1266 static const struct cxacru_modem_type cxacru_cb00 = { 1267 .pll_f_clk = 0x5, 1268 .pll_b_clk = 0x3, 1269 .boot_rom_patch = 0, 1270 }; 1271 1272 static const struct usb_device_id cxacru_usb_ids[] = { 1273 { /* V = Conexant P = ADSL modem (Euphrates project) */ 1274 USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe 1275 }, 1276 { /* V = Conexant P = ADSL modem (Hasbani project) */ 1277 USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00 1278 }, 1279 { /* V = Conexant P = ADSL modem */ 1280 USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1281 }, 1282 { /* V = Conexant P = ADSL modem (Well PTI-800) */ 1283 USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00 1284 }, 1285 { /* V = Conexant P = ADSL modem */ 1286 USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00 1287 }, 1288 { /* V = Conexant P = ADSL modem (ZTE ZXDSL 852) */ 1289 USB_DEVICE(0x0572, 0xcb07), .driver_info = (unsigned long) &cxacru_cb00 1290 }, 1291 { /* V = Olitec P = ADSL modem version 2 */ 1292 USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe 1293 }, 1294 { /* V = Olitec P = ADSL modem version 3 */ 1295 USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00 1296 }, 1297 { /* V = Trust/Amigo Technology Co. P = AMX-CA86U */ 1298 USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe 1299 }, 1300 { /* V = Zoom P = 5510 */ 1301 USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00 1302 }, 1303 { /* V = Draytek P = Vigor 318 */ 1304 USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00 1305 }, 1306 { /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */ 1307 USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00 1308 }, 1309 { /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */ 1310 USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00 1311 }, 1312 { /* V = Aethra P = Starmodem UM1020 */ 1313 USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00 1314 }, 1315 { /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */ 1316 USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00 1317 }, 1318 { /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */ 1319 USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1320 }, 1321 { /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */ 1322 USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00 1323 }, 1324 {} 1325 }; 1326 1327 MODULE_DEVICE_TABLE(usb, cxacru_usb_ids); 1328 1329 static struct usbatm_driver cxacru_driver = { 1330 .driver_name = cxacru_driver_name, 1331 .bind = cxacru_bind, 1332 .heavy_init = cxacru_heavy_init, 1333 .unbind = cxacru_unbind, 1334 .atm_start = cxacru_atm_start, 1335 .atm_stop = cxacru_remove_device_files, 1336 .bulk_in = CXACRU_EP_DATA, 1337 .bulk_out = CXACRU_EP_DATA, 1338 .rx_padding = 3, 1339 .tx_padding = 11, 1340 }; 1341 1342 static int cxacru_usb_probe(struct usb_interface *intf, 1343 const struct usb_device_id *id) 1344 { 1345 struct usb_device *usb_dev = interface_to_usbdev(intf); 1346 char buf[15]; 1347 1348 /* Avoid ADSL routers (cx82310_eth). 1349 * Abort if bDeviceClass is 0xff and iProduct is "USB NET CARD". 1350 */ 1351 if (usb_dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC 1352 && usb_string(usb_dev, usb_dev->descriptor.iProduct, 1353 buf, sizeof(buf)) > 0) { 1354 if (!strcmp(buf, "USB NET CARD")) { 1355 dev_info(&intf->dev, "ignoring cx82310_eth device\n"); 1356 return -ENODEV; 1357 } 1358 } 1359 1360 return usbatm_usb_probe(intf, id, &cxacru_driver); 1361 } 1362 1363 static struct usb_driver cxacru_usb_driver = { 1364 .name = cxacru_driver_name, 1365 .probe = cxacru_usb_probe, 1366 .disconnect = usbatm_usb_disconnect, 1367 .id_table = cxacru_usb_ids 1368 }; 1369 1370 module_usb_driver(cxacru_usb_driver); 1371 1372 MODULE_AUTHOR(DRIVER_AUTHOR); 1373 MODULE_DESCRIPTION(DRIVER_DESC); 1374 MODULE_LICENSE("GPL"); 1375