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