1 /****************************************************************************** 2 * cxacru.c - driver for USB ADSL modems based on 3 * Conexant AccessRunner chipset 4 * 5 * Copyright (C) 2004 David Woodhouse, Duncan Sands, Roman Kagan 6 * Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru) 7 * Copyright (C) 2007 Simon Arlott 8 * Copyright (C) 2009 Simon Arlott 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the Free 12 * Software Foundation; either version 2 of the License, or (at your option) 13 * any later version. 14 * 15 * This program is distributed in the hope that it will be useful, but WITHOUT 16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 18 * more details. 19 * 20 * You should have received a copy of the GNU General Public License along with 21 * this program; if not, write to the Free Software Foundation, Inc., 59 22 * Temple Place - Suite 330, Boston, MA 02111-1307, USA. 23 * 24 ******************************************************************************/ 25 26 /* 27 * Credit is due for Josep Comas, who created the original patch to speedtch.c 28 * to support the different padding used by the AccessRunner (now generalized 29 * into usbatm), and the userspace firmware loading utility. 30 */ 31 32 #include <linux/module.h> 33 #include <linux/moduleparam.h> 34 #include <linux/kernel.h> 35 #include <linux/timer.h> 36 #include <linux/errno.h> 37 #include <linux/slab.h> 38 #include <linux/device.h> 39 #include <linux/firmware.h> 40 #include <linux/mutex.h> 41 #include <asm/unaligned.h> 42 43 #include "usbatm.h" 44 45 #define DRIVER_AUTHOR "Roman Kagan, David Woodhouse, Duncan Sands, Simon Arlott" 46 #define DRIVER_VERSION "0.4" 47 #define DRIVER_DESC "Conexant AccessRunner ADSL USB modem driver" 48 49 static const char cxacru_driver_name[] = "cxacru"; 50 51 #define CXACRU_EP_CMD 0x01 /* Bulk/interrupt in/out */ 52 #define CXACRU_EP_DATA 0x02 /* Bulk in/out */ 53 54 #define CMD_PACKET_SIZE 64 /* Should be maxpacket(ep)? */ 55 #define CMD_MAX_CONFIG ((CMD_PACKET_SIZE / 4 - 1) / 2) 56 57 /* Addresses */ 58 #define PLLFCLK_ADDR 0x00350068 59 #define PLLBCLK_ADDR 0x0035006c 60 #define SDRAMEN_ADDR 0x00350010 61 #define FW_ADDR 0x00801000 62 #define BR_ADDR 0x00180600 63 #define SIG_ADDR 0x00180500 64 #define BR_STACK_ADDR 0x00187f10 65 66 /* Values */ 67 #define SDRAM_ENA 0x1 68 69 #define CMD_TIMEOUT 2000 /* msecs */ 70 #define POLL_INTERVAL 1 /* secs */ 71 72 /* commands for interaction with the modem through the control channel before 73 * firmware is loaded */ 74 enum cxacru_fw_request { 75 FW_CMD_ERR, 76 FW_GET_VER, 77 FW_READ_MEM, 78 FW_WRITE_MEM, 79 FW_RMW_MEM, 80 FW_CHECKSUM_MEM, 81 FW_GOTO_MEM, 82 }; 83 84 /* commands for interaction with the modem through the control channel once 85 * firmware is loaded */ 86 enum cxacru_cm_request { 87 CM_REQUEST_UNDEFINED = 0x80, 88 CM_REQUEST_TEST, 89 CM_REQUEST_CHIP_GET_MAC_ADDRESS, 90 CM_REQUEST_CHIP_GET_DP_VERSIONS, 91 CM_REQUEST_CHIP_ADSL_LINE_START, 92 CM_REQUEST_CHIP_ADSL_LINE_STOP, 93 CM_REQUEST_CHIP_ADSL_LINE_GET_STATUS, 94 CM_REQUEST_CHIP_ADSL_LINE_GET_SPEED, 95 CM_REQUEST_CARD_INFO_GET, 96 CM_REQUEST_CARD_DATA_GET, 97 CM_REQUEST_CARD_DATA_SET, 98 CM_REQUEST_COMMAND_HW_IO, 99 CM_REQUEST_INTERFACE_HW_IO, 100 CM_REQUEST_CARD_SERIAL_DATA_PATH_GET, 101 CM_REQUEST_CARD_SERIAL_DATA_PATH_SET, 102 CM_REQUEST_CARD_CONTROLLER_VERSION_GET, 103 CM_REQUEST_CARD_GET_STATUS, 104 CM_REQUEST_CARD_GET_MAC_ADDRESS, 105 CM_REQUEST_CARD_GET_DATA_LINK_STATUS, 106 CM_REQUEST_MAX, 107 }; 108 109 /* commands for interaction with the flash memory 110 * 111 * read: response is the contents of the first 60 bytes of flash memory 112 * write: request contains the 60 bytes of data to write to flash memory 113 * response is the contents of the first 60 bytes of flash memory 114 * 115 * layout: PP PP VV VV MM MM MM MM MM MM ?? ?? SS SS SS SS SS SS SS SS 116 * SS SS SS SS SS SS SS SS 00 00 00 00 00 00 00 00 00 00 00 00 117 * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 118 * 119 * P: le16 USB Product ID 120 * V: le16 USB Vendor ID 121 * M: be48 MAC Address 122 * S: le16 ASCII Serial Number 123 */ 124 enum cxacru_cm_flash { 125 CM_FLASH_READ = 0xa1, 126 CM_FLASH_WRITE = 0xa2 127 }; 128 129 /* reply codes to the commands above */ 130 enum cxacru_cm_status { 131 CM_STATUS_UNDEFINED, 132 CM_STATUS_SUCCESS, 133 CM_STATUS_ERROR, 134 CM_STATUS_UNSUPPORTED, 135 CM_STATUS_UNIMPLEMENTED, 136 CM_STATUS_PARAMETER_ERROR, 137 CM_STATUS_DBG_LOOPBACK, 138 CM_STATUS_MAX, 139 }; 140 141 /* indices into CARD_INFO_GET return array */ 142 enum cxacru_info_idx { 143 CXINF_DOWNSTREAM_RATE, 144 CXINF_UPSTREAM_RATE, 145 CXINF_LINK_STATUS, 146 CXINF_LINE_STATUS, 147 CXINF_MAC_ADDRESS_HIGH, 148 CXINF_MAC_ADDRESS_LOW, 149 CXINF_UPSTREAM_SNR_MARGIN, 150 CXINF_DOWNSTREAM_SNR_MARGIN, 151 CXINF_UPSTREAM_ATTENUATION, 152 CXINF_DOWNSTREAM_ATTENUATION, 153 CXINF_TRANSMITTER_POWER, 154 CXINF_UPSTREAM_BITS_PER_FRAME, 155 CXINF_DOWNSTREAM_BITS_PER_FRAME, 156 CXINF_STARTUP_ATTEMPTS, 157 CXINF_UPSTREAM_CRC_ERRORS, 158 CXINF_DOWNSTREAM_CRC_ERRORS, 159 CXINF_UPSTREAM_FEC_ERRORS, 160 CXINF_DOWNSTREAM_FEC_ERRORS, 161 CXINF_UPSTREAM_HEC_ERRORS, 162 CXINF_DOWNSTREAM_HEC_ERRORS, 163 CXINF_LINE_STARTABLE, 164 CXINF_MODULATION, 165 CXINF_ADSL_HEADEND, 166 CXINF_ADSL_HEADEND_ENVIRONMENT, 167 CXINF_CONTROLLER_VERSION, 168 /* dunno what the missing two mean */ 169 CXINF_MAX = 0x1c, 170 }; 171 172 enum cxacru_poll_state { 173 CXPOLL_STOPPING, 174 CXPOLL_STOPPED, 175 CXPOLL_POLLING, 176 CXPOLL_SHUTDOWN 177 }; 178 179 struct cxacru_modem_type { 180 u32 pll_f_clk; 181 u32 pll_b_clk; 182 int boot_rom_patch; 183 }; 184 185 struct cxacru_data { 186 struct usbatm_data *usbatm; 187 188 const struct cxacru_modem_type *modem_type; 189 190 int line_status; 191 struct mutex adsl_state_serialize; 192 int adsl_status; 193 struct delayed_work poll_work; 194 u32 card_info[CXINF_MAX]; 195 struct mutex poll_state_serialize; 196 enum cxacru_poll_state poll_state; 197 198 /* contol handles */ 199 struct mutex cm_serialize; 200 u8 *rcv_buf; 201 u8 *snd_buf; 202 struct urb *rcv_urb; 203 struct urb *snd_urb; 204 struct completion rcv_done; 205 struct completion snd_done; 206 }; 207 208 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, 209 u8 *wdata, int wsize, u8 *rdata, int rsize); 210 static void cxacru_poll_status(struct work_struct *work); 211 212 /* Card info exported through sysfs */ 213 #define CXACRU__ATTR_INIT(_name) \ 214 static DEVICE_ATTR(_name, S_IRUGO, cxacru_sysfs_show_##_name, NULL) 215 216 #define CXACRU_CMD_INIT(_name) \ 217 static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \ 218 cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name) 219 220 #define CXACRU_SET_INIT(_name) \ 221 static DEVICE_ATTR(_name, S_IWUSR, \ 222 NULL, cxacru_sysfs_store_##_name) 223 224 #define CXACRU_ATTR_INIT(_value, _type, _name) \ 225 static ssize_t cxacru_sysfs_show_##_name(struct device *dev, \ 226 struct device_attribute *attr, char *buf) \ 227 { \ 228 struct cxacru_data *instance = to_usbatm_driver_data(\ 229 to_usb_interface(dev)); \ 230 \ 231 if (instance == NULL) \ 232 return -ENODEV; \ 233 \ 234 return cxacru_sysfs_showattr_##_type(instance->card_info[_value], buf); \ 235 } \ 236 CXACRU__ATTR_INIT(_name) 237 238 #define CXACRU_ATTR_CREATE(_v, _t, _name) CXACRU_DEVICE_CREATE_FILE(_name) 239 #define CXACRU_CMD_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) 240 #define CXACRU_SET_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) 241 #define CXACRU__ATTR_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) 242 243 #define CXACRU_ATTR_REMOVE(_v, _t, _name) CXACRU_DEVICE_REMOVE_FILE(_name) 244 #define CXACRU_CMD_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) 245 #define CXACRU_SET_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) 246 #define CXACRU__ATTR_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) 247 248 static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf) 249 { 250 return snprintf(buf, PAGE_SIZE, "%u\n", value); 251 } 252 253 static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf) 254 { 255 return snprintf(buf, PAGE_SIZE, "%d\n", value); 256 } 257 258 static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf) 259 { 260 if (likely(value >= 0)) { 261 return snprintf(buf, PAGE_SIZE, "%u.%02u\n", 262 value / 100, value % 100); 263 } else { 264 value = -value; 265 return snprintf(buf, PAGE_SIZE, "-%u.%02u\n", 266 value / 100, value % 100); 267 } 268 } 269 270 static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf) 271 { 272 static char *str[] = { "no", "yes" }; 273 274 if (unlikely(value >= ARRAY_SIZE(str))) 275 return snprintf(buf, PAGE_SIZE, "%u\n", value); 276 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 277 } 278 279 static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf) 280 { 281 static char *str[] = { NULL, "not connected", "connected", "lost" }; 282 283 if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL)) 284 return snprintf(buf, PAGE_SIZE, "%u\n", value); 285 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 286 } 287 288 static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf) 289 { 290 static char *str[] = { "down", "attempting to activate", 291 "training", "channel analysis", "exchange", "up", 292 "waiting", "initialising" 293 }; 294 if (unlikely(value >= ARRAY_SIZE(str))) 295 return snprintf(buf, PAGE_SIZE, "%u\n", value); 296 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 297 } 298 299 static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf) 300 { 301 static char *str[] = { 302 "", 303 "ANSI T1.413", 304 "ITU-T G.992.1 (G.DMT)", 305 "ITU-T G.992.2 (G.LITE)" 306 }; 307 if (unlikely(value >= ARRAY_SIZE(str))) 308 return snprintf(buf, PAGE_SIZE, "%u\n", value); 309 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 310 } 311 312 /* 313 * This could use MAC_ADDRESS_HIGH and MAC_ADDRESS_LOW, but since 314 * this data is already in atm_dev there's no point. 315 * 316 * MAC_ADDRESS_HIGH = 0x????5544 317 * MAC_ADDRESS_LOW = 0x33221100 318 * Where 00-55 are bytes 0-5 of the MAC. 319 */ 320 static ssize_t cxacru_sysfs_show_mac_address(struct device *dev, 321 struct device_attribute *attr, char *buf) 322 { 323 struct cxacru_data *instance = to_usbatm_driver_data( 324 to_usb_interface(dev)); 325 326 if (instance == NULL || instance->usbatm->atm_dev == NULL) 327 return -ENODEV; 328 329 return snprintf(buf, PAGE_SIZE, "%pM\n", 330 instance->usbatm->atm_dev->esi); 331 } 332 333 static ssize_t cxacru_sysfs_show_adsl_state(struct device *dev, 334 struct device_attribute *attr, char *buf) 335 { 336 static char *str[] = { "running", "stopped" }; 337 struct cxacru_data *instance = to_usbatm_driver_data( 338 to_usb_interface(dev)); 339 u32 value; 340 341 if (instance == NULL) 342 return -ENODEV; 343 344 value = instance->card_info[CXINF_LINE_STARTABLE]; 345 if (unlikely(value >= ARRAY_SIZE(str))) 346 return snprintf(buf, PAGE_SIZE, "%u\n", value); 347 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]); 348 } 349 350 static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev, 351 struct device_attribute *attr, const char *buf, size_t count) 352 { 353 struct cxacru_data *instance = to_usbatm_driver_data( 354 to_usb_interface(dev)); 355 int ret; 356 int poll = -1; 357 char str_cmd[8]; 358 int len = strlen(buf); 359 360 if (!capable(CAP_NET_ADMIN)) 361 return -EACCES; 362 363 ret = sscanf(buf, "%7s", str_cmd); 364 if (ret != 1) 365 return -EINVAL; 366 ret = 0; 367 368 if (instance == NULL) 369 return -ENODEV; 370 371 if (mutex_lock_interruptible(&instance->adsl_state_serialize)) 372 return -ERESTARTSYS; 373 374 if (!strcmp(str_cmd, "stop") || !strcmp(str_cmd, "restart")) { 375 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_STOP, NULL, 0, NULL, 0); 376 if (ret < 0) { 377 atm_err(instance->usbatm, "change adsl state:" 378 " CHIP_ADSL_LINE_STOP returned %d\n", ret); 379 380 ret = -EIO; 381 } else { 382 ret = len; 383 poll = CXPOLL_STOPPED; 384 } 385 } 386 387 /* Line status is only updated every second 388 * and the device appears to only react to 389 * START/STOP every second too. Wait 1.5s to 390 * be sure that restart will have an effect. */ 391 if (!strcmp(str_cmd, "restart")) 392 msleep(1500); 393 394 if (!strcmp(str_cmd, "start") || !strcmp(str_cmd, "restart")) { 395 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0); 396 if (ret < 0) { 397 atm_err(instance->usbatm, "change adsl state:" 398 " CHIP_ADSL_LINE_START returned %d\n", ret); 399 400 ret = -EIO; 401 } else { 402 ret = len; 403 poll = CXPOLL_POLLING; 404 } 405 } 406 407 if (!strcmp(str_cmd, "poll")) { 408 ret = len; 409 poll = CXPOLL_POLLING; 410 } 411 412 if (ret == 0) { 413 ret = -EINVAL; 414 poll = -1; 415 } 416 417 if (poll == CXPOLL_POLLING) { 418 mutex_lock(&instance->poll_state_serialize); 419 switch (instance->poll_state) { 420 case CXPOLL_STOPPED: 421 /* start polling */ 422 instance->poll_state = CXPOLL_POLLING; 423 break; 424 425 case CXPOLL_STOPPING: 426 /* abort stop request */ 427 instance->poll_state = CXPOLL_POLLING; 428 case CXPOLL_POLLING: 429 case CXPOLL_SHUTDOWN: 430 /* don't start polling */ 431 poll = -1; 432 } 433 mutex_unlock(&instance->poll_state_serialize); 434 } else if (poll == CXPOLL_STOPPED) { 435 mutex_lock(&instance->poll_state_serialize); 436 /* request stop */ 437 if (instance->poll_state == CXPOLL_POLLING) 438 instance->poll_state = CXPOLL_STOPPING; 439 mutex_unlock(&instance->poll_state_serialize); 440 } 441 442 mutex_unlock(&instance->adsl_state_serialize); 443 444 if (poll == CXPOLL_POLLING) 445 cxacru_poll_status(&instance->poll_work.work); 446 447 return ret; 448 } 449 450 /* CM_REQUEST_CARD_DATA_GET times out, so no show attribute */ 451 452 static ssize_t cxacru_sysfs_store_adsl_config(struct device *dev, 453 struct device_attribute *attr, const char *buf, size_t count) 454 { 455 struct cxacru_data *instance = to_usbatm_driver_data( 456 to_usb_interface(dev)); 457 int len = strlen(buf); 458 int ret, pos, num; 459 __le32 data[CMD_PACKET_SIZE / 4]; 460 461 if (!capable(CAP_NET_ADMIN)) 462 return -EACCES; 463 464 if (instance == NULL) 465 return -ENODEV; 466 467 pos = 0; 468 num = 0; 469 while (pos < len) { 470 int tmp; 471 u32 index; 472 u32 value; 473 474 ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp); 475 if (ret < 2) 476 return -EINVAL; 477 if (index < 0 || index > 0x7f) 478 return -EINVAL; 479 pos += tmp; 480 481 /* skip trailing newline */ 482 if (buf[pos] == '\n' && pos == len-1) 483 pos++; 484 485 data[num * 2 + 1] = cpu_to_le32(index); 486 data[num * 2 + 2] = cpu_to_le32(value); 487 num++; 488 489 /* send config values when data buffer is full 490 * or no more data 491 */ 492 if (pos >= len || num >= CMD_MAX_CONFIG) { 493 char log[CMD_MAX_CONFIG * 12 + 1]; /* %02x=%08x */ 494 495 data[0] = cpu_to_le32(num); 496 ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET, 497 (u8 *) data, 4 + num * 8, NULL, 0); 498 if (ret < 0) { 499 atm_err(instance->usbatm, 500 "set card data returned %d\n", ret); 501 return -EIO; 502 } 503 504 for (tmp = 0; tmp < num; tmp++) 505 snprintf(log + tmp*12, 13, " %02x=%08x", 506 le32_to_cpu(data[tmp * 2 + 1]), 507 le32_to_cpu(data[tmp * 2 + 2])); 508 atm_info(instance->usbatm, "config%s\n", log); 509 num = 0; 510 } 511 } 512 513 return len; 514 } 515 516 /* 517 * All device attributes are included in CXACRU_ALL_FILES 518 * so that the same list can be used multiple times: 519 * INIT (define the device attributes) 520 * CREATE (create all the device files) 521 * REMOVE (remove all the device files) 522 * 523 * With the last two being defined as needed in the functions 524 * they are used in before calling CXACRU_ALL_FILES() 525 */ 526 #define CXACRU_ALL_FILES(_action) \ 527 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_RATE, u32, downstream_rate); \ 528 CXACRU_ATTR_##_action(CXINF_UPSTREAM_RATE, u32, upstream_rate); \ 529 CXACRU_ATTR_##_action(CXINF_LINK_STATUS, LINK, link_status); \ 530 CXACRU_ATTR_##_action(CXINF_LINE_STATUS, LINE, line_status); \ 531 CXACRU__ATTR_##_action( mac_address); \ 532 CXACRU_ATTR_##_action(CXINF_UPSTREAM_SNR_MARGIN, dB, upstream_snr_margin); \ 533 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_SNR_MARGIN, dB, downstream_snr_margin); \ 534 CXACRU_ATTR_##_action(CXINF_UPSTREAM_ATTENUATION, dB, upstream_attenuation); \ 535 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_ATTENUATION, dB, downstream_attenuation); \ 536 CXACRU_ATTR_##_action(CXINF_TRANSMITTER_POWER, s8, transmitter_power); \ 537 CXACRU_ATTR_##_action(CXINF_UPSTREAM_BITS_PER_FRAME, u32, upstream_bits_per_frame); \ 538 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_BITS_PER_FRAME, u32, downstream_bits_per_frame); \ 539 CXACRU_ATTR_##_action(CXINF_STARTUP_ATTEMPTS, u32, startup_attempts); \ 540 CXACRU_ATTR_##_action(CXINF_UPSTREAM_CRC_ERRORS, u32, upstream_crc_errors); \ 541 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_CRC_ERRORS, u32, downstream_crc_errors); \ 542 CXACRU_ATTR_##_action(CXINF_UPSTREAM_FEC_ERRORS, u32, upstream_fec_errors); \ 543 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_FEC_ERRORS, u32, downstream_fec_errors); \ 544 CXACRU_ATTR_##_action(CXINF_UPSTREAM_HEC_ERRORS, u32, upstream_hec_errors); \ 545 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_HEC_ERRORS, u32, downstream_hec_errors); \ 546 CXACRU_ATTR_##_action(CXINF_LINE_STARTABLE, bool, line_startable); \ 547 CXACRU_ATTR_##_action(CXINF_MODULATION, MODU, modulation); \ 548 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND, u32, adsl_headend); \ 549 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT, u32, adsl_headend_environment); \ 550 CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION, u32, adsl_controller_version); \ 551 CXACRU_CMD_##_action( adsl_state); \ 552 CXACRU_SET_##_action( adsl_config); 553 554 CXACRU_ALL_FILES(INIT); 555 556 /* the following three functions are stolen from drivers/usb/core/message.c */ 557 static void cxacru_blocking_completion(struct urb *urb) 558 { 559 complete(urb->context); 560 } 561 562 static void cxacru_timeout_kill(unsigned long data) 563 { 564 usb_unlink_urb((struct urb *) data); 565 } 566 567 static int cxacru_start_wait_urb(struct urb *urb, struct completion *done, 568 int *actual_length) 569 { 570 struct timer_list timer; 571 572 init_timer(&timer); 573 timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT); 574 timer.data = (unsigned long) urb; 575 timer.function = cxacru_timeout_kill; 576 add_timer(&timer); 577 wait_for_completion(done); 578 del_timer_sync(&timer); 579 580 if (actual_length) 581 *actual_length = urb->actual_length; 582 return urb->status; /* must read status after completion */ 583 } 584 585 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, 586 u8 *wdata, int wsize, u8 *rdata, int rsize) 587 { 588 int ret, actlen; 589 int offb, offd; 590 const int stride = CMD_PACKET_SIZE - 4; 591 u8 *wbuf = instance->snd_buf; 592 u8 *rbuf = instance->rcv_buf; 593 int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE; 594 int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE; 595 596 if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) { 597 if (printk_ratelimit()) 598 usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n", 599 wbuflen, rbuflen); 600 ret = -ENOMEM; 601 goto err; 602 } 603 604 mutex_lock(&instance->cm_serialize); 605 606 /* submit reading urb before the writing one */ 607 init_completion(&instance->rcv_done); 608 ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL); 609 if (ret < 0) { 610 if (printk_ratelimit()) 611 usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n", 612 cm, ret); 613 goto fail; 614 } 615 616 memset(wbuf, 0, wbuflen); 617 /* handle wsize == 0 */ 618 wbuf[0] = cm; 619 for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) { 620 wbuf[offb] = cm; 621 memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd)); 622 } 623 624 instance->snd_urb->transfer_buffer_length = wbuflen; 625 init_completion(&instance->snd_done); 626 ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL); 627 if (ret < 0) { 628 if (printk_ratelimit()) 629 usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n", 630 cm, ret); 631 goto fail; 632 } 633 634 ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL); 635 if (ret < 0) { 636 if (printk_ratelimit()) 637 usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret); 638 goto fail; 639 } 640 641 ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen); 642 if (ret < 0) { 643 if (printk_ratelimit()) 644 usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret); 645 goto fail; 646 } 647 if (actlen % CMD_PACKET_SIZE || !actlen) { 648 if (printk_ratelimit()) 649 usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n", 650 cm, actlen); 651 ret = -EIO; 652 goto fail; 653 } 654 655 /* check the return status and copy the data to the output buffer, if needed */ 656 for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) { 657 if (rbuf[offb] != cm) { 658 if (printk_ratelimit()) 659 usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n", 660 rbuf[offb], cm); 661 ret = -EIO; 662 goto fail; 663 } 664 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) { 665 if (printk_ratelimit()) 666 usb_err(instance->usbatm, "response to cm %#x failed: %#x\n", 667 cm, rbuf[offb + 1]); 668 ret = -EIO; 669 goto fail; 670 } 671 if (offd >= rsize) 672 break; 673 memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd)); 674 offd += stride; 675 } 676 677 ret = offd; 678 usb_dbg(instance->usbatm, "cm %#x\n", cm); 679 fail: 680 mutex_unlock(&instance->cm_serialize); 681 err: 682 return ret; 683 } 684 685 static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm, 686 u32 *data, int size) 687 { 688 int ret, len; 689 __le32 *buf; 690 int offb; 691 unsigned int offd; 692 const int stride = CMD_PACKET_SIZE / (4 * 2) - 1; 693 int buflen = ((size - 1) / stride + 1 + size * 2) * 4; 694 695 buf = kmalloc(buflen, GFP_KERNEL); 696 if (!buf) 697 return -ENOMEM; 698 699 ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen); 700 if (ret < 0) 701 goto cleanup; 702 703 /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */ 704 len = ret / 4; 705 for (offb = 0; offb < len; ) { 706 int l = le32_to_cpu(buf[offb++]); 707 708 if (l < 0 || l > stride || l > (len - offb) / 2) { 709 if (printk_ratelimit()) 710 usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n", 711 cm, l); 712 ret = -EIO; 713 goto cleanup; 714 } 715 while (l--) { 716 offd = le32_to_cpu(buf[offb++]); 717 if (offd >= size) { 718 if (printk_ratelimit()) 719 usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n", 720 offd, cm); 721 ret = -EIO; 722 goto cleanup; 723 } 724 data[offd] = le32_to_cpu(buf[offb++]); 725 } 726 } 727 728 ret = 0; 729 730 cleanup: 731 kfree(buf); 732 return ret; 733 } 734 735 static int cxacru_card_status(struct cxacru_data *instance) 736 { 737 int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); 738 739 if (ret < 0) { /* firmware not loaded */ 740 usb_dbg(instance->usbatm, "cxacru_adsl_start: CARD_GET_STATUS returned %d\n", ret); 741 return ret; 742 } 743 return 0; 744 } 745 746 static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance, 747 struct atm_dev *atm_dev) 748 { 749 struct usb_interface *intf = usbatm_instance->usb_intf; 750 751 #define CXACRU_DEVICE_REMOVE_FILE(_name) \ 752 device_remove_file(&intf->dev, &dev_attr_##_name); 753 CXACRU_ALL_FILES(REMOVE); 754 #undef CXACRU_DEVICE_REMOVE_FILE 755 } 756 757 static int cxacru_atm_start(struct usbatm_data *usbatm_instance, 758 struct atm_dev *atm_dev) 759 { 760 struct cxacru_data *instance = usbatm_instance->driver_data; 761 struct usb_interface *intf = usbatm_instance->usb_intf; 762 int ret; 763 int start_polling = 1; 764 765 dev_dbg(&intf->dev, "%s\n", __func__); 766 767 /* Read MAC address */ 768 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0, 769 atm_dev->esi, sizeof(atm_dev->esi)); 770 if (ret < 0) { 771 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret); 772 return ret; 773 } 774 775 #define CXACRU_DEVICE_CREATE_FILE(_name) \ 776 ret = device_create_file(&intf->dev, &dev_attr_##_name); \ 777 if (unlikely(ret)) \ 778 goto fail_sysfs; 779 CXACRU_ALL_FILES(CREATE); 780 #undef CXACRU_DEVICE_CREATE_FILE 781 782 /* start ADSL */ 783 mutex_lock(&instance->adsl_state_serialize); 784 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0); 785 if (ret < 0) 786 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret); 787 788 /* Start status polling */ 789 mutex_lock(&instance->poll_state_serialize); 790 switch (instance->poll_state) { 791 case CXPOLL_STOPPED: 792 /* start polling */ 793 instance->poll_state = CXPOLL_POLLING; 794 break; 795 796 case CXPOLL_STOPPING: 797 /* abort stop request */ 798 instance->poll_state = CXPOLL_POLLING; 799 case CXPOLL_POLLING: 800 case CXPOLL_SHUTDOWN: 801 /* don't start polling */ 802 start_polling = 0; 803 } 804 mutex_unlock(&instance->poll_state_serialize); 805 mutex_unlock(&instance->adsl_state_serialize); 806 807 printk(KERN_INFO "%s%d: %s %pM\n", atm_dev->type, atm_dev->number, 808 usbatm_instance->description, atm_dev->esi); 809 810 if (start_polling) 811 cxacru_poll_status(&instance->poll_work.work); 812 return 0; 813 814 fail_sysfs: 815 usb_err(usbatm_instance, "cxacru_atm_start: device_create_file failed (%d)\n", ret); 816 cxacru_remove_device_files(usbatm_instance, atm_dev); 817 return ret; 818 } 819 820 static void cxacru_poll_status(struct work_struct *work) 821 { 822 struct cxacru_data *instance = 823 container_of(work, struct cxacru_data, poll_work.work); 824 u32 buf[CXINF_MAX] = {}; 825 struct usbatm_data *usbatm = instance->usbatm; 826 struct atm_dev *atm_dev = usbatm->atm_dev; 827 int keep_polling = 1; 828 int ret; 829 830 ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX); 831 if (ret < 0) { 832 if (ret != -ESHUTDOWN) 833 atm_warn(usbatm, "poll status: error %d\n", ret); 834 835 mutex_lock(&instance->poll_state_serialize); 836 if (instance->poll_state != CXPOLL_SHUTDOWN) { 837 instance->poll_state = CXPOLL_STOPPED; 838 839 if (ret != -ESHUTDOWN) 840 atm_warn(usbatm, "polling disabled, set adsl_state" 841 " to 'start' or 'poll' to resume\n"); 842 } 843 mutex_unlock(&instance->poll_state_serialize); 844 goto reschedule; 845 } 846 847 memcpy(instance->card_info, buf, sizeof(instance->card_info)); 848 849 if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) { 850 instance->adsl_status = buf[CXINF_LINE_STARTABLE]; 851 852 switch (instance->adsl_status) { 853 case 0: 854 atm_printk(KERN_INFO, usbatm, "ADSL state: running\n"); 855 break; 856 857 case 1: 858 atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n"); 859 break; 860 861 default: 862 atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status); 863 break; 864 } 865 } 866 867 if (instance->line_status == buf[CXINF_LINE_STATUS]) 868 goto reschedule; 869 870 instance->line_status = buf[CXINF_LINE_STATUS]; 871 switch (instance->line_status) { 872 case 0: 873 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 874 atm_info(usbatm, "ADSL line: down\n"); 875 break; 876 877 case 1: 878 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 879 atm_info(usbatm, "ADSL line: attempting to activate\n"); 880 break; 881 882 case 2: 883 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 884 atm_info(usbatm, "ADSL line: training\n"); 885 break; 886 887 case 3: 888 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 889 atm_info(usbatm, "ADSL line: channel analysis\n"); 890 break; 891 892 case 4: 893 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 894 atm_info(usbatm, "ADSL line: exchange\n"); 895 break; 896 897 case 5: 898 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424; 899 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_FOUND); 900 901 atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n", 902 buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]); 903 break; 904 905 case 6: 906 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 907 atm_info(usbatm, "ADSL line: waiting\n"); 908 break; 909 910 case 7: 911 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); 912 atm_info(usbatm, "ADSL line: initializing\n"); 913 break; 914 915 default: 916 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_UNKNOWN); 917 atm_info(usbatm, "Unknown line state %02x\n", instance->line_status); 918 break; 919 } 920 reschedule: 921 922 mutex_lock(&instance->poll_state_serialize); 923 if (instance->poll_state == CXPOLL_STOPPING && 924 instance->adsl_status == 1 && /* stopped */ 925 instance->line_status == 0) /* down */ 926 instance->poll_state = CXPOLL_STOPPED; 927 928 if (instance->poll_state == CXPOLL_STOPPED) 929 keep_polling = 0; 930 mutex_unlock(&instance->poll_state_serialize); 931 932 if (keep_polling) 933 schedule_delayed_work(&instance->poll_work, 934 round_jiffies_relative(POLL_INTERVAL*HZ)); 935 } 936 937 static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw, 938 u8 code1, u8 code2, u32 addr, const u8 *data, int size) 939 { 940 int ret; 941 u8 *buf; 942 int offd, offb; 943 const int stride = CMD_PACKET_SIZE - 8; 944 945 buf = (u8 *) __get_free_page(GFP_KERNEL); 946 if (!buf) 947 return -ENOMEM; 948 949 offb = offd = 0; 950 do { 951 int l = min_t(int, stride, size - offd); 952 953 buf[offb++] = fw; 954 buf[offb++] = l; 955 buf[offb++] = code1; 956 buf[offb++] = code2; 957 put_unaligned(cpu_to_le32(addr), (__le32 *)(buf + offb)); 958 offb += 4; 959 addr += l; 960 if (l) 961 memcpy(buf + offb, data + offd, l); 962 if (l < stride) 963 memset(buf + offb + l, 0, stride - l); 964 offb += stride; 965 offd += stride; 966 if ((offb >= PAGE_SIZE) || (offd >= size)) { 967 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), 968 buf, offb, NULL, CMD_TIMEOUT); 969 if (ret < 0) { 970 dev_dbg(&usb_dev->dev, "sending fw %#x failed\n", fw); 971 goto cleanup; 972 } 973 offb = 0; 974 } 975 } while (offd < size); 976 dev_dbg(&usb_dev->dev, "sent fw %#x\n", fw); 977 978 ret = 0; 979 980 cleanup: 981 free_page((unsigned long) buf); 982 return ret; 983 } 984 985 static void cxacru_upload_firmware(struct cxacru_data *instance, 986 const struct firmware *fw, 987 const struct firmware *bp) 988 { 989 int ret; 990 struct usbatm_data *usbatm = instance->usbatm; 991 struct usb_device *usb_dev = usbatm->usb_dev; 992 __le16 signature[] = { usb_dev->descriptor.idVendor, 993 usb_dev->descriptor.idProduct }; 994 __le32 val; 995 996 usb_dbg(usbatm, "%s\n", __func__); 997 998 /* FirmwarePllFClkValue */ 999 val = cpu_to_le32(instance->modem_type->pll_f_clk); 1000 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4); 1001 if (ret) { 1002 usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret); 1003 return; 1004 } 1005 1006 /* FirmwarePllBClkValue */ 1007 val = cpu_to_le32(instance->modem_type->pll_b_clk); 1008 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4); 1009 if (ret) { 1010 usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret); 1011 return; 1012 } 1013 1014 /* Enable SDRAM */ 1015 val = cpu_to_le32(SDRAM_ENA); 1016 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4); 1017 if (ret) { 1018 usb_err(usbatm, "Enable SDRAM failed: %d\n", ret); 1019 return; 1020 } 1021 1022 /* Firmware */ 1023 usb_info(usbatm, "loading firmware\n"); 1024 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size); 1025 if (ret) { 1026 usb_err(usbatm, "Firmware upload failed: %d\n", ret); 1027 return; 1028 } 1029 1030 /* Boot ROM patch */ 1031 if (instance->modem_type->boot_rom_patch) { 1032 usb_info(usbatm, "loading boot ROM patch\n"); 1033 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size); 1034 if (ret) { 1035 usb_err(usbatm, "Boot ROM patching failed: %d\n", ret); 1036 return; 1037 } 1038 } 1039 1040 /* Signature */ 1041 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4); 1042 if (ret) { 1043 usb_err(usbatm, "Signature storing failed: %d\n", ret); 1044 return; 1045 } 1046 1047 usb_info(usbatm, "starting device\n"); 1048 if (instance->modem_type->boot_rom_patch) { 1049 val = cpu_to_le32(BR_ADDR); 1050 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4); 1051 } else { 1052 ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0); 1053 } 1054 if (ret) { 1055 usb_err(usbatm, "Passing control to firmware failed: %d\n", ret); 1056 return; 1057 } 1058 1059 /* Delay to allow firmware to start up. */ 1060 msleep_interruptible(1000); 1061 1062 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD)); 1063 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD)); 1064 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA)); 1065 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA)); 1066 1067 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); 1068 if (ret < 0) { 1069 usb_err(usbatm, "modem failed to initialize: %d\n", ret); 1070 return; 1071 } 1072 } 1073 1074 static int cxacru_find_firmware(struct cxacru_data *instance, 1075 char *phase, const struct firmware **fw_p) 1076 { 1077 struct usbatm_data *usbatm = instance->usbatm; 1078 struct device *dev = &usbatm->usb_intf->dev; 1079 char buf[16]; 1080 1081 sprintf(buf, "cxacru-%s.bin", phase); 1082 usb_dbg(usbatm, "cxacru_find_firmware: looking for %s\n", buf); 1083 1084 if (request_firmware(fw_p, buf, dev)) { 1085 usb_dbg(usbatm, "no stage %s firmware found\n", phase); 1086 return -ENOENT; 1087 } 1088 1089 usb_info(usbatm, "found firmware %s\n", buf); 1090 1091 return 0; 1092 } 1093 1094 static int cxacru_heavy_init(struct usbatm_data *usbatm_instance, 1095 struct usb_interface *usb_intf) 1096 { 1097 const struct firmware *fw, *bp; 1098 struct cxacru_data *instance = usbatm_instance->driver_data; 1099 int ret = cxacru_find_firmware(instance, "fw", &fw); 1100 1101 if (ret) { 1102 usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n"); 1103 return ret; 1104 } 1105 1106 if (instance->modem_type->boot_rom_patch) { 1107 ret = cxacru_find_firmware(instance, "bp", &bp); 1108 if (ret) { 1109 usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n"); 1110 release_firmware(fw); 1111 return ret; 1112 } 1113 } 1114 1115 cxacru_upload_firmware(instance, fw, bp); 1116 1117 if (instance->modem_type->boot_rom_patch) 1118 release_firmware(bp); 1119 release_firmware(fw); 1120 1121 ret = cxacru_card_status(instance); 1122 if (ret) 1123 usb_dbg(usbatm_instance, "modem initialisation failed\n"); 1124 else 1125 usb_dbg(usbatm_instance, "done setting up the modem\n"); 1126 1127 return ret; 1128 } 1129 1130 static int cxacru_bind(struct usbatm_data *usbatm_instance, 1131 struct usb_interface *intf, const struct usb_device_id *id) 1132 { 1133 struct cxacru_data *instance; 1134 struct usb_device *usb_dev = interface_to_usbdev(intf); 1135 struct usb_host_endpoint *cmd_ep = usb_dev->ep_in[CXACRU_EP_CMD]; 1136 int ret; 1137 1138 /* instance init */ 1139 instance = kzalloc(sizeof(*instance), GFP_KERNEL); 1140 if (!instance) { 1141 usb_dbg(usbatm_instance, "cxacru_bind: no memory for instance data\n"); 1142 return -ENOMEM; 1143 } 1144 1145 instance->usbatm = usbatm_instance; 1146 instance->modem_type = (struct cxacru_modem_type *) id->driver_info; 1147 1148 mutex_init(&instance->poll_state_serialize); 1149 instance->poll_state = CXPOLL_STOPPED; 1150 instance->line_status = -1; 1151 instance->adsl_status = -1; 1152 1153 mutex_init(&instance->adsl_state_serialize); 1154 1155 instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL); 1156 if (!instance->rcv_buf) { 1157 usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_buf\n"); 1158 ret = -ENOMEM; 1159 goto fail; 1160 } 1161 instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL); 1162 if (!instance->snd_buf) { 1163 usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_buf\n"); 1164 ret = -ENOMEM; 1165 goto fail; 1166 } 1167 instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL); 1168 if (!instance->rcv_urb) { 1169 usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_urb\n"); 1170 ret = -ENOMEM; 1171 goto fail; 1172 } 1173 instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL); 1174 if (!instance->snd_urb) { 1175 usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_urb\n"); 1176 ret = -ENOMEM; 1177 goto fail; 1178 } 1179 1180 if (!cmd_ep) { 1181 usb_dbg(usbatm_instance, "cxacru_bind: no command endpoint\n"); 1182 ret = -ENODEV; 1183 goto fail; 1184 } 1185 1186 if ((cmd_ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) 1187 == USB_ENDPOINT_XFER_INT) { 1188 usb_fill_int_urb(instance->rcv_urb, 1189 usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD), 1190 instance->rcv_buf, PAGE_SIZE, 1191 cxacru_blocking_completion, &instance->rcv_done, 1); 1192 1193 usb_fill_int_urb(instance->snd_urb, 1194 usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD), 1195 instance->snd_buf, PAGE_SIZE, 1196 cxacru_blocking_completion, &instance->snd_done, 4); 1197 } else { 1198 usb_fill_bulk_urb(instance->rcv_urb, 1199 usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD), 1200 instance->rcv_buf, PAGE_SIZE, 1201 cxacru_blocking_completion, &instance->rcv_done); 1202 1203 usb_fill_bulk_urb(instance->snd_urb, 1204 usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), 1205 instance->snd_buf, PAGE_SIZE, 1206 cxacru_blocking_completion, &instance->snd_done); 1207 } 1208 1209 mutex_init(&instance->cm_serialize); 1210 1211 INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status); 1212 1213 usbatm_instance->driver_data = instance; 1214 1215 usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT); 1216 1217 return 0; 1218 1219 fail: 1220 free_page((unsigned long) instance->snd_buf); 1221 free_page((unsigned long) instance->rcv_buf); 1222 usb_free_urb(instance->snd_urb); 1223 usb_free_urb(instance->rcv_urb); 1224 kfree(instance); 1225 1226 return ret; 1227 } 1228 1229 static void cxacru_unbind(struct usbatm_data *usbatm_instance, 1230 struct usb_interface *intf) 1231 { 1232 struct cxacru_data *instance = usbatm_instance->driver_data; 1233 int is_polling = 1; 1234 1235 usb_dbg(usbatm_instance, "cxacru_unbind entered\n"); 1236 1237 if (!instance) { 1238 usb_dbg(usbatm_instance, "cxacru_unbind: NULL instance!\n"); 1239 return; 1240 } 1241 1242 mutex_lock(&instance->poll_state_serialize); 1243 BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN); 1244 1245 /* ensure that status polling continues unless 1246 * it has already stopped */ 1247 if (instance->poll_state == CXPOLL_STOPPED) 1248 is_polling = 0; 1249 1250 /* stop polling from being stopped or started */ 1251 instance->poll_state = CXPOLL_SHUTDOWN; 1252 mutex_unlock(&instance->poll_state_serialize); 1253 1254 if (is_polling) 1255 cancel_delayed_work_sync(&instance->poll_work); 1256 1257 usb_kill_urb(instance->snd_urb); 1258 usb_kill_urb(instance->rcv_urb); 1259 usb_free_urb(instance->snd_urb); 1260 usb_free_urb(instance->rcv_urb); 1261 1262 free_page((unsigned long) instance->snd_buf); 1263 free_page((unsigned long) instance->rcv_buf); 1264 1265 kfree(instance); 1266 1267 usbatm_instance->driver_data = NULL; 1268 } 1269 1270 static const struct cxacru_modem_type cxacru_cafe = { 1271 .pll_f_clk = 0x02d874df, 1272 .pll_b_clk = 0x0196a51a, 1273 .boot_rom_patch = 1, 1274 }; 1275 1276 static const struct cxacru_modem_type cxacru_cb00 = { 1277 .pll_f_clk = 0x5, 1278 .pll_b_clk = 0x3, 1279 .boot_rom_patch = 0, 1280 }; 1281 1282 static const struct usb_device_id cxacru_usb_ids[] = { 1283 { /* V = Conexant P = ADSL modem (Euphrates project) */ 1284 USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe 1285 }, 1286 { /* V = Conexant P = ADSL modem (Hasbani project) */ 1287 USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00 1288 }, 1289 { /* V = Conexant P = ADSL modem */ 1290 USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1291 }, 1292 { /* V = Conexant P = ADSL modem (Well PTI-800) */ 1293 USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00 1294 }, 1295 { /* V = Conexant P = ADSL modem */ 1296 USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00 1297 }, 1298 { /* V = Conexant P = ADSL modem (ZTE ZXDSL 852) */ 1299 USB_DEVICE(0x0572, 0xcb07), .driver_info = (unsigned long) &cxacru_cb00 1300 }, 1301 { /* V = Olitec P = ADSL modem version 2 */ 1302 USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe 1303 }, 1304 { /* V = Olitec P = ADSL modem version 3 */ 1305 USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00 1306 }, 1307 { /* V = Trust/Amigo Technology Co. P = AMX-CA86U */ 1308 USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe 1309 }, 1310 { /* V = Zoom P = 5510 */ 1311 USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00 1312 }, 1313 { /* V = Draytek P = Vigor 318 */ 1314 USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00 1315 }, 1316 { /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */ 1317 USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00 1318 }, 1319 { /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */ 1320 USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00 1321 }, 1322 { /* V = Aethra P = Starmodem UM1020 */ 1323 USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00 1324 }, 1325 { /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */ 1326 USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00 1327 }, 1328 { /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */ 1329 USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1330 }, 1331 { /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */ 1332 USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00 1333 }, 1334 {} 1335 }; 1336 1337 MODULE_DEVICE_TABLE(usb, cxacru_usb_ids); 1338 1339 static struct usbatm_driver cxacru_driver = { 1340 .driver_name = cxacru_driver_name, 1341 .bind = cxacru_bind, 1342 .heavy_init = cxacru_heavy_init, 1343 .unbind = cxacru_unbind, 1344 .atm_start = cxacru_atm_start, 1345 .atm_stop = cxacru_remove_device_files, 1346 .bulk_in = CXACRU_EP_DATA, 1347 .bulk_out = CXACRU_EP_DATA, 1348 .rx_padding = 3, 1349 .tx_padding = 11, 1350 }; 1351 1352 static int cxacru_usb_probe(struct usb_interface *intf, 1353 const struct usb_device_id *id) 1354 { 1355 struct usb_device *usb_dev = interface_to_usbdev(intf); 1356 char buf[15]; 1357 1358 /* Avoid ADSL routers (cx82310_eth). 1359 * Abort if bDeviceClass is 0xff and iProduct is "USB NET CARD". 1360 */ 1361 if (usb_dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC 1362 && usb_string(usb_dev, usb_dev->descriptor.iProduct, 1363 buf, sizeof(buf)) > 0) { 1364 if (!strcmp(buf, "USB NET CARD")) { 1365 dev_info(&intf->dev, "ignoring cx82310_eth device\n"); 1366 return -ENODEV; 1367 } 1368 } 1369 1370 return usbatm_usb_probe(intf, id, &cxacru_driver); 1371 } 1372 1373 static struct usb_driver cxacru_usb_driver = { 1374 .name = cxacru_driver_name, 1375 .probe = cxacru_usb_probe, 1376 .disconnect = usbatm_usb_disconnect, 1377 .id_table = cxacru_usb_ids 1378 }; 1379 1380 module_usb_driver(cxacru_usb_driver); 1381 1382 MODULE_AUTHOR(DRIVER_AUTHOR); 1383 MODULE_DESCRIPTION(DRIVER_DESC); 1384 MODULE_LICENSE("GPL"); 1385 MODULE_VERSION(DRIVER_VERSION); 1386