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