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 struct cxacru_timer { 551 struct timer_list timer; 552 struct urb *urb; 553 }; 554 555 static void cxacru_timeout_kill(struct timer_list *t) 556 { 557 struct cxacru_timer *timer = from_timer(timer, t, timer); 558 559 usb_unlink_urb(timer->urb); 560 } 561 562 static int cxacru_start_wait_urb(struct urb *urb, struct completion *done, 563 int *actual_length) 564 { 565 struct cxacru_timer timer = { 566 .urb = urb, 567 }; 568 569 timer_setup_on_stack(&timer.timer, cxacru_timeout_kill, 0); 570 mod_timer(&timer.timer, jiffies + msecs_to_jiffies(CMD_TIMEOUT)); 571 wait_for_completion(done); 572 del_timer_sync(&timer.timer); 573 destroy_timer_on_stack(&timer.timer); 574 575 if (actual_length) 576 *actual_length = urb->actual_length; 577 return urb->status; /* must read status after completion */ 578 } 579 580 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, 581 u8 *wdata, int wsize, u8 *rdata, int rsize) 582 { 583 int ret, actlen; 584 int offb, offd; 585 const int stride = CMD_PACKET_SIZE - 4; 586 u8 *wbuf = instance->snd_buf; 587 u8 *rbuf = instance->rcv_buf; 588 int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE; 589 int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE; 590 591 if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) { 592 if (printk_ratelimit()) 593 usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n", 594 wbuflen, rbuflen); 595 ret = -ENOMEM; 596 goto err; 597 } 598 599 mutex_lock(&instance->cm_serialize); 600 601 /* submit reading urb before the writing one */ 602 init_completion(&instance->rcv_done); 603 ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL); 604 if (ret < 0) { 605 if (printk_ratelimit()) 606 usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n", 607 cm, ret); 608 goto fail; 609 } 610 611 memset(wbuf, 0, wbuflen); 612 /* handle wsize == 0 */ 613 wbuf[0] = cm; 614 for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) { 615 wbuf[offb] = cm; 616 memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd)); 617 } 618 619 instance->snd_urb->transfer_buffer_length = wbuflen; 620 init_completion(&instance->snd_done); 621 ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL); 622 if (ret < 0) { 623 if (printk_ratelimit()) 624 usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n", 625 cm, ret); 626 goto fail; 627 } 628 629 ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL); 630 if (ret < 0) { 631 if (printk_ratelimit()) 632 usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret); 633 goto fail; 634 } 635 636 ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen); 637 if (ret < 0) { 638 if (printk_ratelimit()) 639 usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret); 640 goto fail; 641 } 642 if (actlen % CMD_PACKET_SIZE || !actlen) { 643 if (printk_ratelimit()) 644 usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n", 645 cm, actlen); 646 ret = -EIO; 647 goto fail; 648 } 649 650 /* check the return status and copy the data to the output buffer, if needed */ 651 for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) { 652 if (rbuf[offb] != cm) { 653 if (printk_ratelimit()) 654 usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n", 655 rbuf[offb], cm); 656 ret = -EIO; 657 goto fail; 658 } 659 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) { 660 if (printk_ratelimit()) 661 usb_err(instance->usbatm, "response to cm %#x failed: %#x\n", 662 cm, rbuf[offb + 1]); 663 ret = -EIO; 664 goto fail; 665 } 666 if (offd >= rsize) 667 break; 668 memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd)); 669 offd += stride; 670 } 671 672 ret = offd; 673 usb_dbg(instance->usbatm, "cm %#x\n", cm); 674 fail: 675 mutex_unlock(&instance->cm_serialize); 676 err: 677 return ret; 678 } 679 680 static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm, 681 u32 *data, int size) 682 { 683 int ret, len; 684 __le32 *buf; 685 int offb; 686 unsigned int offd; 687 const int stride = CMD_PACKET_SIZE / (4 * 2) - 1; 688 int buflen = ((size - 1) / stride + 1 + size * 2) * 4; 689 690 buf = kmalloc(buflen, GFP_KERNEL); 691 if (!buf) 692 return -ENOMEM; 693 694 ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen); 695 if (ret < 0) 696 goto cleanup; 697 698 /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */ 699 len = ret / 4; 700 for (offb = 0; offb < len; ) { 701 int l = le32_to_cpu(buf[offb++]); 702 703 if (l < 0 || l > stride || l > (len - offb) / 2) { 704 if (printk_ratelimit()) 705 usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n", 706 cm, l); 707 ret = -EIO; 708 goto cleanup; 709 } 710 while (l--) { 711 offd = le32_to_cpu(buf[offb++]); 712 if (offd >= size) { 713 if (printk_ratelimit()) 714 usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n", 715 offd, cm); 716 ret = -EIO; 717 goto cleanup; 718 } 719 data[offd] = le32_to_cpu(buf[offb++]); 720 } 721 } 722 723 ret = 0; 724 725 cleanup: 726 kfree(buf); 727 return ret; 728 } 729 730 static int cxacru_card_status(struct cxacru_data *instance) 731 { 732 int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); 733 734 if (ret < 0) { /* firmware not loaded */ 735 usb_dbg(instance->usbatm, "cxacru_adsl_start: CARD_GET_STATUS returned %d\n", ret); 736 return ret; 737 } 738 return 0; 739 } 740 741 static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance, 742 struct atm_dev *atm_dev) 743 { 744 struct usb_interface *intf = usbatm_instance->usb_intf; 745 746 #define CXACRU_DEVICE_REMOVE_FILE(_name) \ 747 device_remove_file(&intf->dev, &dev_attr_##_name); 748 CXACRU_ALL_FILES(REMOVE); 749 #undef CXACRU_DEVICE_REMOVE_FILE 750 } 751 752 static int cxacru_atm_start(struct usbatm_data *usbatm_instance, 753 struct atm_dev *atm_dev) 754 { 755 struct cxacru_data *instance = usbatm_instance->driver_data; 756 struct usb_interface *intf = usbatm_instance->usb_intf; 757 int ret; 758 int start_polling = 1; 759 760 dev_dbg(&intf->dev, "%s\n", __func__); 761 762 /* Read MAC address */ 763 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0, 764 atm_dev->esi, sizeof(atm_dev->esi)); 765 if (ret < 0) { 766 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret); 767 return ret; 768 } 769 770 #define CXACRU_DEVICE_CREATE_FILE(_name) \ 771 ret = device_create_file(&intf->dev, &dev_attr_##_name); \ 772 if (unlikely(ret)) \ 773 goto fail_sysfs; 774 CXACRU_ALL_FILES(CREATE); 775 #undef CXACRU_DEVICE_CREATE_FILE 776 777 /* start ADSL */ 778 mutex_lock(&instance->adsl_state_serialize); 779 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0); 780 if (ret < 0) 781 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret); 782 783 /* Start status polling */ 784 mutex_lock(&instance->poll_state_serialize); 785 switch (instance->poll_state) { 786 case CXPOLL_STOPPED: 787 /* start polling */ 788 instance->poll_state = CXPOLL_POLLING; 789 break; 790 791 case CXPOLL_STOPPING: 792 /* abort stop request */ 793 instance->poll_state = CXPOLL_POLLING; 794 /* fall through */ 795 case CXPOLL_POLLING: 796 case CXPOLL_SHUTDOWN: 797 /* don't start polling */ 798 start_polling = 0; 799 } 800 mutex_unlock(&instance->poll_state_serialize); 801 mutex_unlock(&instance->adsl_state_serialize); 802 803 printk(KERN_INFO "%s%d: %s %pM\n", atm_dev->type, atm_dev->number, 804 usbatm_instance->description, atm_dev->esi); 805 806 if (start_polling) 807 cxacru_poll_status(&instance->poll_work.work); 808 return 0; 809 810 fail_sysfs: 811 usb_err(usbatm_instance, "cxacru_atm_start: device_create_file failed (%d)\n", ret); 812 cxacru_remove_device_files(usbatm_instance, atm_dev); 813 return ret; 814 } 815 816 static void cxacru_poll_status(struct work_struct *work) 817 { 818 struct cxacru_data *instance = 819 container_of(work, struct cxacru_data, poll_work.work); 820 u32 buf[CXINF_MAX] = {}; 821 struct usbatm_data *usbatm = instance->usbatm; 822 struct atm_dev *atm_dev = usbatm->atm_dev; 823 int keep_polling = 1; 824 int ret; 825 826 ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX); 827 if (ret < 0) { 828 if (ret != -ESHUTDOWN) 829 atm_warn(usbatm, "poll status: error %d\n", ret); 830 831 mutex_lock(&instance->poll_state_serialize); 832 if (instance->poll_state != CXPOLL_SHUTDOWN) { 833 instance->poll_state = CXPOLL_STOPPED; 834 835 if (ret != -ESHUTDOWN) 836 atm_warn(usbatm, "polling disabled, set adsl_state" 837 " to 'start' or 'poll' to resume\n"); 838 } 839 mutex_unlock(&instance->poll_state_serialize); 840 goto reschedule; 841 } 842 843 memcpy(instance->card_info, buf, sizeof(instance->card_info)); 844 845 if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) { 846 instance->adsl_status = buf[CXINF_LINE_STARTABLE]; 847 848 switch (instance->adsl_status) { 849 case 0: 850 atm_printk(KERN_INFO, usbatm, "ADSL state: running\n"); 851 break; 852 853 case 1: 854 atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n"); 855 break; 856 857 default: 858 atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status); 859 break; 860 } 861 } 862 863 if (instance->line_status == buf[CXINF_LINE_STATUS]) 864 goto reschedule; 865 866 instance->line_status = buf[CXINF_LINE_STATUS]; 867 switch (instance->line_status) { 868 case 0: 869 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 870 atm_info(usbatm, "ADSL line: down\n"); 871 break; 872 873 case 1: 874 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 875 atm_info(usbatm, "ADSL line: attempting to activate\n"); 876 break; 877 878 case 2: 879 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 880 atm_info(usbatm, "ADSL line: training\n"); 881 break; 882 883 case 3: 884 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 885 atm_info(usbatm, "ADSL line: channel analysis\n"); 886 break; 887 888 case 4: 889 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 890 atm_info(usbatm, "ADSL line: exchange\n"); 891 break; 892 893 case 5: 894 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424; 895 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_FOUND); 896 897 atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n", 898 buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]); 899 break; 900 901 case 6: 902 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 903 atm_info(usbatm, "ADSL line: waiting\n"); 904 break; 905 906 case 7: 907 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 908 atm_info(usbatm, "ADSL line: initializing\n"); 909 break; 910 911 default: 912 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_UNKNOWN); 913 atm_info(usbatm, "Unknown line state %02x\n", instance->line_status); 914 break; 915 } 916 reschedule: 917 918 mutex_lock(&instance->poll_state_serialize); 919 if (instance->poll_state == CXPOLL_STOPPING && 920 instance->adsl_status == 1 && /* stopped */ 921 instance->line_status == 0) /* down */ 922 instance->poll_state = CXPOLL_STOPPED; 923 924 if (instance->poll_state == CXPOLL_STOPPED) 925 keep_polling = 0; 926 mutex_unlock(&instance->poll_state_serialize); 927 928 if (keep_polling) 929 schedule_delayed_work(&instance->poll_work, 930 round_jiffies_relative(POLL_INTERVAL*HZ)); 931 } 932 933 static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw, 934 u8 code1, u8 code2, u32 addr, const u8 *data, int size) 935 { 936 int ret; 937 u8 *buf; 938 int offd, offb; 939 const int stride = CMD_PACKET_SIZE - 8; 940 941 buf = (u8 *) __get_free_page(GFP_KERNEL); 942 if (!buf) 943 return -ENOMEM; 944 945 offb = offd = 0; 946 do { 947 int l = min_t(int, stride, size - offd); 948 949 buf[offb++] = fw; 950 buf[offb++] = l; 951 buf[offb++] = code1; 952 buf[offb++] = code2; 953 put_unaligned(cpu_to_le32(addr), (__le32 *)(buf + offb)); 954 offb += 4; 955 addr += l; 956 if (l) 957 memcpy(buf + offb, data + offd, l); 958 if (l < stride) 959 memset(buf + offb + l, 0, stride - l); 960 offb += stride; 961 offd += stride; 962 if ((offb >= PAGE_SIZE) || (offd >= size)) { 963 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), 964 buf, offb, NULL, CMD_TIMEOUT); 965 if (ret < 0) { 966 dev_dbg(&usb_dev->dev, "sending fw %#x failed\n", fw); 967 goto cleanup; 968 } 969 offb = 0; 970 } 971 } while (offd < size); 972 dev_dbg(&usb_dev->dev, "sent fw %#x\n", fw); 973 974 ret = 0; 975 976 cleanup: 977 free_page((unsigned long) buf); 978 return ret; 979 } 980 981 static void cxacru_upload_firmware(struct cxacru_data *instance, 982 const struct firmware *fw, 983 const struct firmware *bp) 984 { 985 int ret; 986 struct usbatm_data *usbatm = instance->usbatm; 987 struct usb_device *usb_dev = usbatm->usb_dev; 988 __le16 signature[] = { usb_dev->descriptor.idVendor, 989 usb_dev->descriptor.idProduct }; 990 __le32 val; 991 992 usb_dbg(usbatm, "%s\n", __func__); 993 994 /* FirmwarePllFClkValue */ 995 val = cpu_to_le32(instance->modem_type->pll_f_clk); 996 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4); 997 if (ret) { 998 usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret); 999 return; 1000 } 1001 1002 /* FirmwarePllBClkValue */ 1003 val = cpu_to_le32(instance->modem_type->pll_b_clk); 1004 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4); 1005 if (ret) { 1006 usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret); 1007 return; 1008 } 1009 1010 /* Enable SDRAM */ 1011 val = cpu_to_le32(SDRAM_ENA); 1012 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4); 1013 if (ret) { 1014 usb_err(usbatm, "Enable SDRAM failed: %d\n", ret); 1015 return; 1016 } 1017 1018 /* Firmware */ 1019 usb_info(usbatm, "loading firmware\n"); 1020 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size); 1021 if (ret) { 1022 usb_err(usbatm, "Firmware upload failed: %d\n", ret); 1023 return; 1024 } 1025 1026 /* Boot ROM patch */ 1027 if (instance->modem_type->boot_rom_patch) { 1028 usb_info(usbatm, "loading boot ROM patch\n"); 1029 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size); 1030 if (ret) { 1031 usb_err(usbatm, "Boot ROM patching failed: %d\n", ret); 1032 return; 1033 } 1034 } 1035 1036 /* Signature */ 1037 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4); 1038 if (ret) { 1039 usb_err(usbatm, "Signature storing failed: %d\n", ret); 1040 return; 1041 } 1042 1043 usb_info(usbatm, "starting device\n"); 1044 if (instance->modem_type->boot_rom_patch) { 1045 val = cpu_to_le32(BR_ADDR); 1046 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4); 1047 } else { 1048 ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0); 1049 } 1050 if (ret) { 1051 usb_err(usbatm, "Passing control to firmware failed: %d\n", ret); 1052 return; 1053 } 1054 1055 /* Delay to allow firmware to start up. */ 1056 msleep_interruptible(1000); 1057 1058 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD)); 1059 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD)); 1060 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA)); 1061 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA)); 1062 1063 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); 1064 if (ret < 0) { 1065 usb_err(usbatm, "modem failed to initialize: %d\n", ret); 1066 return; 1067 } 1068 } 1069 1070 static int cxacru_find_firmware(struct cxacru_data *instance, 1071 char *phase, const struct firmware **fw_p) 1072 { 1073 struct usbatm_data *usbatm = instance->usbatm; 1074 struct device *dev = &usbatm->usb_intf->dev; 1075 char buf[16]; 1076 1077 sprintf(buf, "cxacru-%s.bin", phase); 1078 usb_dbg(usbatm, "cxacru_find_firmware: looking for %s\n", buf); 1079 1080 if (request_firmware(fw_p, buf, dev)) { 1081 usb_dbg(usbatm, "no stage %s firmware found\n", phase); 1082 return -ENOENT; 1083 } 1084 1085 usb_info(usbatm, "found firmware %s\n", buf); 1086 1087 return 0; 1088 } 1089 1090 static int cxacru_heavy_init(struct usbatm_data *usbatm_instance, 1091 struct usb_interface *usb_intf) 1092 { 1093 const struct firmware *fw, *bp; 1094 struct cxacru_data *instance = usbatm_instance->driver_data; 1095 int ret = cxacru_find_firmware(instance, "fw", &fw); 1096 1097 if (ret) { 1098 usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n"); 1099 return ret; 1100 } 1101 1102 if (instance->modem_type->boot_rom_patch) { 1103 ret = cxacru_find_firmware(instance, "bp", &bp); 1104 if (ret) { 1105 usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n"); 1106 release_firmware(fw); 1107 return ret; 1108 } 1109 } 1110 1111 cxacru_upload_firmware(instance, fw, bp); 1112 1113 if (instance->modem_type->boot_rom_patch) 1114 release_firmware(bp); 1115 release_firmware(fw); 1116 1117 ret = cxacru_card_status(instance); 1118 if (ret) 1119 usb_dbg(usbatm_instance, "modem initialisation failed\n"); 1120 else 1121 usb_dbg(usbatm_instance, "done setting up the modem\n"); 1122 1123 return ret; 1124 } 1125 1126 static int cxacru_bind(struct usbatm_data *usbatm_instance, 1127 struct usb_interface *intf, const struct usb_device_id *id) 1128 { 1129 struct cxacru_data *instance; 1130 struct usb_device *usb_dev = interface_to_usbdev(intf); 1131 struct usb_host_endpoint *cmd_ep = usb_dev->ep_in[CXACRU_EP_CMD]; 1132 int ret; 1133 1134 /* instance init */ 1135 instance = kzalloc(sizeof(*instance), GFP_KERNEL); 1136 if (!instance) 1137 return -ENOMEM; 1138 1139 instance->usbatm = usbatm_instance; 1140 instance->modem_type = (struct cxacru_modem_type *) id->driver_info; 1141 1142 mutex_init(&instance->poll_state_serialize); 1143 instance->poll_state = CXPOLL_STOPPED; 1144 instance->line_status = -1; 1145 instance->adsl_status = -1; 1146 1147 mutex_init(&instance->adsl_state_serialize); 1148 1149 instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL); 1150 if (!instance->rcv_buf) { 1151 usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_buf\n"); 1152 ret = -ENOMEM; 1153 goto fail; 1154 } 1155 instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL); 1156 if (!instance->snd_buf) { 1157 usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_buf\n"); 1158 ret = -ENOMEM; 1159 goto fail; 1160 } 1161 instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL); 1162 if (!instance->rcv_urb) { 1163 ret = -ENOMEM; 1164 goto fail; 1165 } 1166 instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL); 1167 if (!instance->snd_urb) { 1168 ret = -ENOMEM; 1169 goto fail; 1170 } 1171 1172 if (!cmd_ep) { 1173 usb_dbg(usbatm_instance, "cxacru_bind: no command endpoint\n"); 1174 ret = -ENODEV; 1175 goto fail; 1176 } 1177 1178 if ((cmd_ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1179 == USB_ENDPOINT_XFER_INT) { 1180 usb_fill_int_urb(instance->rcv_urb, 1181 usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD), 1182 instance->rcv_buf, PAGE_SIZE, 1183 cxacru_blocking_completion, &instance->rcv_done, 1); 1184 1185 usb_fill_int_urb(instance->snd_urb, 1186 usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD), 1187 instance->snd_buf, PAGE_SIZE, 1188 cxacru_blocking_completion, &instance->snd_done, 4); 1189 } else { 1190 usb_fill_bulk_urb(instance->rcv_urb, 1191 usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD), 1192 instance->rcv_buf, PAGE_SIZE, 1193 cxacru_blocking_completion, &instance->rcv_done); 1194 1195 usb_fill_bulk_urb(instance->snd_urb, 1196 usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), 1197 instance->snd_buf, PAGE_SIZE, 1198 cxacru_blocking_completion, &instance->snd_done); 1199 } 1200 1201 mutex_init(&instance->cm_serialize); 1202 1203 INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status); 1204 1205 usbatm_instance->driver_data = instance; 1206 1207 usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT); 1208 1209 return 0; 1210 1211 fail: 1212 free_page((unsigned long) instance->snd_buf); 1213 free_page((unsigned long) instance->rcv_buf); 1214 usb_free_urb(instance->snd_urb); 1215 usb_free_urb(instance->rcv_urb); 1216 kfree(instance); 1217 1218 return ret; 1219 } 1220 1221 static void cxacru_unbind(struct usbatm_data *usbatm_instance, 1222 struct usb_interface *intf) 1223 { 1224 struct cxacru_data *instance = usbatm_instance->driver_data; 1225 int is_polling = 1; 1226 1227 usb_dbg(usbatm_instance, "cxacru_unbind entered\n"); 1228 1229 if (!instance) { 1230 usb_dbg(usbatm_instance, "cxacru_unbind: NULL instance!\n"); 1231 return; 1232 } 1233 1234 mutex_lock(&instance->poll_state_serialize); 1235 BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN); 1236 1237 /* ensure that status polling continues unless 1238 * it has already stopped */ 1239 if (instance->poll_state == CXPOLL_STOPPED) 1240 is_polling = 0; 1241 1242 /* stop polling from being stopped or started */ 1243 instance->poll_state = CXPOLL_SHUTDOWN; 1244 mutex_unlock(&instance->poll_state_serialize); 1245 1246 if (is_polling) 1247 cancel_delayed_work_sync(&instance->poll_work); 1248 1249 usb_kill_urb(instance->snd_urb); 1250 usb_kill_urb(instance->rcv_urb); 1251 usb_free_urb(instance->snd_urb); 1252 usb_free_urb(instance->rcv_urb); 1253 1254 free_page((unsigned long) instance->snd_buf); 1255 free_page((unsigned long) instance->rcv_buf); 1256 1257 kfree(instance); 1258 1259 usbatm_instance->driver_data = NULL; 1260 } 1261 1262 static const struct cxacru_modem_type cxacru_cafe = { 1263 .pll_f_clk = 0x02d874df, 1264 .pll_b_clk = 0x0196a51a, 1265 .boot_rom_patch = 1, 1266 }; 1267 1268 static const struct cxacru_modem_type cxacru_cb00 = { 1269 .pll_f_clk = 0x5, 1270 .pll_b_clk = 0x3, 1271 .boot_rom_patch = 0, 1272 }; 1273 1274 static const struct usb_device_id cxacru_usb_ids[] = { 1275 { /* V = Conexant P = ADSL modem (Euphrates project) */ 1276 USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe 1277 }, 1278 { /* V = Conexant P = ADSL modem (Hasbani project) */ 1279 USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00 1280 }, 1281 { /* V = Conexant P = ADSL modem */ 1282 USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1283 }, 1284 { /* V = Conexant P = ADSL modem (Well PTI-800) */ 1285 USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00 1286 }, 1287 { /* V = Conexant P = ADSL modem */ 1288 USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00 1289 }, 1290 { /* V = Conexant P = ADSL modem (ZTE ZXDSL 852) */ 1291 USB_DEVICE(0x0572, 0xcb07), .driver_info = (unsigned long) &cxacru_cb00 1292 }, 1293 { /* V = Olitec P = ADSL modem version 2 */ 1294 USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe 1295 }, 1296 { /* V = Olitec P = ADSL modem version 3 */ 1297 USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00 1298 }, 1299 { /* V = Trust/Amigo Technology Co. P = AMX-CA86U */ 1300 USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe 1301 }, 1302 { /* V = Zoom P = 5510 */ 1303 USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00 1304 }, 1305 { /* V = Draytek P = Vigor 318 */ 1306 USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00 1307 }, 1308 { /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */ 1309 USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00 1310 }, 1311 { /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */ 1312 USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00 1313 }, 1314 { /* V = Aethra P = Starmodem UM1020 */ 1315 USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00 1316 }, 1317 { /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */ 1318 USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00 1319 }, 1320 { /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */ 1321 USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1322 }, 1323 { /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */ 1324 USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00 1325 }, 1326 {} 1327 }; 1328 1329 MODULE_DEVICE_TABLE(usb, cxacru_usb_ids); 1330 1331 static struct usbatm_driver cxacru_driver = { 1332 .driver_name = cxacru_driver_name, 1333 .bind = cxacru_bind, 1334 .heavy_init = cxacru_heavy_init, 1335 .unbind = cxacru_unbind, 1336 .atm_start = cxacru_atm_start, 1337 .atm_stop = cxacru_remove_device_files, 1338 .bulk_in = CXACRU_EP_DATA, 1339 .bulk_out = CXACRU_EP_DATA, 1340 .rx_padding = 3, 1341 .tx_padding = 11, 1342 }; 1343 1344 static int cxacru_usb_probe(struct usb_interface *intf, 1345 const struct usb_device_id *id) 1346 { 1347 struct usb_device *usb_dev = interface_to_usbdev(intf); 1348 char buf[15]; 1349 1350 /* Avoid ADSL routers (cx82310_eth). 1351 * Abort if bDeviceClass is 0xff and iProduct is "USB NET CARD". 1352 */ 1353 if (usb_dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC 1354 && usb_string(usb_dev, usb_dev->descriptor.iProduct, 1355 buf, sizeof(buf)) > 0) { 1356 if (!strcmp(buf, "USB NET CARD")) { 1357 dev_info(&intf->dev, "ignoring cx82310_eth device\n"); 1358 return -ENODEV; 1359 } 1360 } 1361 1362 return usbatm_usb_probe(intf, id, &cxacru_driver); 1363 } 1364 1365 static struct usb_driver cxacru_usb_driver = { 1366 .name = cxacru_driver_name, 1367 .probe = cxacru_usb_probe, 1368 .disconnect = usbatm_usb_disconnect, 1369 .id_table = cxacru_usb_ids 1370 }; 1371 1372 module_usb_driver(cxacru_usb_driver); 1373 1374 MODULE_AUTHOR(DRIVER_AUTHOR); 1375 MODULE_DESCRIPTION(DRIVER_DESC); 1376 MODULE_LICENSE("GPL"); 1377