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 dbg("cm %#x", 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, offd; 690 const int stride = CMD_PACKET_SIZE / (4 * 2) - 1; 691 int buflen = ((size - 1) / stride + 1 + size * 2) * 4; 692 693 buf = kmalloc(buflen, GFP_KERNEL); 694 if (!buf) 695 return -ENOMEM; 696 697 ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen); 698 if (ret < 0) 699 goto cleanup; 700 701 /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */ 702 len = ret / 4; 703 for (offb = 0; offb < len; ) { 704 int l = le32_to_cpu(buf[offb++]); 705 if (l < 0 || l > stride || l > (len - offb) / 2) { 706 if (printk_ratelimit()) 707 usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n", 708 cm, l); 709 ret = -EIO; 710 goto cleanup; 711 } 712 while (l--) { 713 offd = le32_to_cpu(buf[offb++]); 714 if (offd >= size) { 715 if (printk_ratelimit()) 716 usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n", 717 offd, cm); 718 ret = -EIO; 719 goto cleanup; 720 } 721 data[offd] = le32_to_cpu(buf[offb++]); 722 } 723 } 724 725 ret = 0; 726 727 cleanup: 728 kfree(buf); 729 return ret; 730 } 731 732 static int cxacru_card_status(struct cxacru_data *instance) 733 { 734 int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0); 735 if (ret < 0) { /* firmware not loaded */ 736 dbg("cxacru_adsl_start: CARD_GET_STATUS returned %d", ret); 737 return ret; 738 } 739 return 0; 740 } 741 742 static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance, 743 struct atm_dev *atm_dev) 744 { 745 struct usb_interface *intf = usbatm_instance->usb_intf; 746 747 #define CXACRU_DEVICE_REMOVE_FILE(_name) \ 748 device_remove_file(&intf->dev, &dev_attr_##_name); 749 CXACRU_ALL_FILES(REMOVE); 750 #undef CXACRU_DEVICE_REMOVE_FILE 751 } 752 753 static int cxacru_atm_start(struct usbatm_data *usbatm_instance, 754 struct atm_dev *atm_dev) 755 { 756 struct cxacru_data *instance = usbatm_instance->driver_data; 757 struct usb_interface *intf = usbatm_instance->usb_intf; 758 int ret; 759 int start_polling = 1; 760 761 dbg("cxacru_atm_start"); 762 763 /* Read MAC address */ 764 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0, 765 atm_dev->esi, sizeof(atm_dev->esi)); 766 if (ret < 0) { 767 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret); 768 return ret; 769 } 770 771 #define CXACRU_DEVICE_CREATE_FILE(_name) \ 772 ret = device_create_file(&intf->dev, &dev_attr_##_name); \ 773 if (unlikely(ret)) \ 774 goto fail_sysfs; 775 CXACRU_ALL_FILES(CREATE); 776 #undef CXACRU_DEVICE_CREATE_FILE 777 778 /* start ADSL */ 779 mutex_lock(&instance->adsl_state_serialize); 780 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0); 781 if (ret < 0) 782 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret); 783 784 /* Start status polling */ 785 mutex_lock(&instance->poll_state_serialize); 786 switch (instance->poll_state) { 787 case CXPOLL_STOPPED: 788 /* start polling */ 789 instance->poll_state = CXPOLL_POLLING; 790 break; 791 792 case CXPOLL_STOPPING: 793 /* abort stop request */ 794 instance->poll_state = CXPOLL_POLLING; 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 = ATM_PHY_SIG_LOST; 870 atm_info(usbatm, "ADSL line: down\n"); 871 break; 872 873 case 1: 874 atm_dev->signal = ATM_PHY_SIG_LOST; 875 atm_info(usbatm, "ADSL line: attempting to activate\n"); 876 break; 877 878 case 2: 879 atm_dev->signal = ATM_PHY_SIG_LOST; 880 atm_info(usbatm, "ADSL line: training\n"); 881 break; 882 883 case 3: 884 atm_dev->signal = ATM_PHY_SIG_LOST; 885 atm_info(usbatm, "ADSL line: channel analysis\n"); 886 break; 887 888 case 4: 889 atm_dev->signal = 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 = 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 = ATM_PHY_SIG_LOST; 903 atm_info(usbatm, "ADSL line: waiting\n"); 904 break; 905 906 case 7: 907 atm_dev->signal = ATM_PHY_SIG_LOST; 908 atm_info(usbatm, "ADSL line: initializing\n"); 909 break; 910 911 default: 912 atm_dev->signal = 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 buf[offb++] = fw; 949 buf[offb++] = l; 950 buf[offb++] = code1; 951 buf[offb++] = code2; 952 put_unaligned(cpu_to_le32(addr), (__le32 *)(buf + offb)); 953 offb += 4; 954 addr += l; 955 if(l) 956 memcpy(buf + offb, data + offd, l); 957 if (l < stride) 958 memset(buf + offb + l, 0, stride - l); 959 offb += stride; 960 offd += stride; 961 if ((offb >= PAGE_SIZE) || (offd >= size)) { 962 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), 963 buf, offb, NULL, CMD_TIMEOUT); 964 if (ret < 0) { 965 dbg("sending fw %#x failed", fw); 966 goto cleanup; 967 } 968 offb = 0; 969 } 970 } while(offd < size); 971 dbg("sent fw %#x", fw); 972 973 ret = 0; 974 975 cleanup: 976 free_page((unsigned long) buf); 977 return ret; 978 } 979 980 static void cxacru_upload_firmware(struct cxacru_data *instance, 981 const struct firmware *fw, 982 const struct firmware *bp) 983 { 984 int ret; 985 struct usbatm_data *usbatm = instance->usbatm; 986 struct usb_device *usb_dev = usbatm->usb_dev; 987 __le16 signature[] = { usb_dev->descriptor.idVendor, 988 usb_dev->descriptor.idProduct }; 989 __le32 val; 990 991 dbg("cxacru_upload_firmware"); 992 993 /* FirmwarePllFClkValue */ 994 val = cpu_to_le32(instance->modem_type->pll_f_clk); 995 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4); 996 if (ret) { 997 usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret); 998 return; 999 } 1000 1001 /* FirmwarePllBClkValue */ 1002 val = cpu_to_le32(instance->modem_type->pll_b_clk); 1003 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4); 1004 if (ret) { 1005 usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret); 1006 return; 1007 } 1008 1009 /* Enable SDRAM */ 1010 val = cpu_to_le32(SDRAM_ENA); 1011 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4); 1012 if (ret) { 1013 usb_err(usbatm, "Enable SDRAM failed: %d\n", ret); 1014 return; 1015 } 1016 1017 /* Firmware */ 1018 usb_info(usbatm, "loading firmware\n"); 1019 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size); 1020 if (ret) { 1021 usb_err(usbatm, "Firmware upload failed: %d\n", ret); 1022 return; 1023 } 1024 1025 /* Boot ROM patch */ 1026 if (instance->modem_type->boot_rom_patch) { 1027 usb_info(usbatm, "loading boot ROM patch\n"); 1028 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size); 1029 if (ret) { 1030 usb_err(usbatm, "Boot ROM patching failed: %d\n", ret); 1031 return; 1032 } 1033 } 1034 1035 /* Signature */ 1036 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4); 1037 if (ret) { 1038 usb_err(usbatm, "Signature storing failed: %d\n", ret); 1039 return; 1040 } 1041 1042 usb_info(usbatm, "starting device\n"); 1043 if (instance->modem_type->boot_rom_patch) { 1044 val = cpu_to_le32(BR_ADDR); 1045 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4); 1046 } 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 dbg("cxacru_find_firmware: looking for %s", 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 dbg("modem initialisation failed"); 1120 else 1121 dbg("done setting up the modem"); 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 int ret; 1132 1133 /* instance init */ 1134 instance = kzalloc(sizeof(*instance), GFP_KERNEL); 1135 if (!instance) { 1136 dbg("cxacru_bind: no memory for instance data"); 1137 return -ENOMEM; 1138 } 1139 1140 instance->usbatm = usbatm_instance; 1141 instance->modem_type = (struct cxacru_modem_type *) id->driver_info; 1142 1143 mutex_init(&instance->poll_state_serialize); 1144 instance->poll_state = CXPOLL_STOPPED; 1145 instance->line_status = -1; 1146 instance->adsl_status = -1; 1147 1148 mutex_init(&instance->adsl_state_serialize); 1149 1150 instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL); 1151 if (!instance->rcv_buf) { 1152 dbg("cxacru_bind: no memory for rcv_buf"); 1153 ret = -ENOMEM; 1154 goto fail; 1155 } 1156 instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL); 1157 if (!instance->snd_buf) { 1158 dbg("cxacru_bind: no memory for snd_buf"); 1159 ret = -ENOMEM; 1160 goto fail; 1161 } 1162 instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL); 1163 if (!instance->rcv_urb) { 1164 dbg("cxacru_bind: no memory for rcv_urb"); 1165 ret = -ENOMEM; 1166 goto fail; 1167 } 1168 instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL); 1169 if (!instance->snd_urb) { 1170 dbg("cxacru_bind: no memory for snd_urb"); 1171 ret = -ENOMEM; 1172 goto fail; 1173 } 1174 1175 usb_fill_int_urb(instance->rcv_urb, 1176 usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD), 1177 instance->rcv_buf, PAGE_SIZE, 1178 cxacru_blocking_completion, &instance->rcv_done, 1); 1179 1180 usb_fill_int_urb(instance->snd_urb, 1181 usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD), 1182 instance->snd_buf, PAGE_SIZE, 1183 cxacru_blocking_completion, &instance->snd_done, 4); 1184 1185 mutex_init(&instance->cm_serialize); 1186 1187 INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status); 1188 1189 usbatm_instance->driver_data = instance; 1190 1191 usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT); 1192 1193 return 0; 1194 1195 fail: 1196 free_page((unsigned long) instance->snd_buf); 1197 free_page((unsigned long) instance->rcv_buf); 1198 usb_free_urb(instance->snd_urb); 1199 usb_free_urb(instance->rcv_urb); 1200 kfree(instance); 1201 1202 return ret; 1203 } 1204 1205 static void cxacru_unbind(struct usbatm_data *usbatm_instance, 1206 struct usb_interface *intf) 1207 { 1208 struct cxacru_data *instance = usbatm_instance->driver_data; 1209 int is_polling = 1; 1210 1211 dbg("cxacru_unbind entered"); 1212 1213 if (!instance) { 1214 dbg("cxacru_unbind: NULL instance!"); 1215 return; 1216 } 1217 1218 mutex_lock(&instance->poll_state_serialize); 1219 BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN); 1220 1221 /* ensure that status polling continues unless 1222 * it has already stopped */ 1223 if (instance->poll_state == CXPOLL_STOPPED) 1224 is_polling = 0; 1225 1226 /* stop polling from being stopped or started */ 1227 instance->poll_state = CXPOLL_SHUTDOWN; 1228 mutex_unlock(&instance->poll_state_serialize); 1229 1230 if (is_polling) 1231 cancel_rearming_delayed_work(&instance->poll_work); 1232 1233 usb_kill_urb(instance->snd_urb); 1234 usb_kill_urb(instance->rcv_urb); 1235 usb_free_urb(instance->snd_urb); 1236 usb_free_urb(instance->rcv_urb); 1237 1238 free_page((unsigned long) instance->snd_buf); 1239 free_page((unsigned long) instance->rcv_buf); 1240 1241 kfree(instance); 1242 1243 usbatm_instance->driver_data = NULL; 1244 } 1245 1246 static const struct cxacru_modem_type cxacru_cafe = { 1247 .pll_f_clk = 0x02d874df, 1248 .pll_b_clk = 0x0196a51a, 1249 .boot_rom_patch = 1, 1250 }; 1251 1252 static const struct cxacru_modem_type cxacru_cb00 = { 1253 .pll_f_clk = 0x5, 1254 .pll_b_clk = 0x3, 1255 .boot_rom_patch = 0, 1256 }; 1257 1258 static const struct usb_device_id cxacru_usb_ids[] = { 1259 { /* V = Conexant P = ADSL modem (Euphrates project) */ 1260 USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe 1261 }, 1262 { /* V = Conexant P = ADSL modem (Hasbani project) */ 1263 USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00 1264 }, 1265 { /* V = Conexant P = ADSL modem */ 1266 USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1267 }, 1268 { /* V = Conexant P = ADSL modem (Well PTI-800) */ 1269 USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00 1270 }, 1271 { /* V = Conexant P = ADSL modem */ 1272 USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00 1273 }, 1274 { /* V = Conexant P = ADSL modem (ZTE ZXDSL 852) */ 1275 USB_DEVICE(0x0572, 0xcb07), .driver_info = (unsigned long) &cxacru_cb00 1276 }, 1277 { /* V = Olitec P = ADSL modem version 2 */ 1278 USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe 1279 }, 1280 { /* V = Olitec P = ADSL modem version 3 */ 1281 USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00 1282 }, 1283 { /* V = Trust/Amigo Technology Co. P = AMX-CA86U */ 1284 USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe 1285 }, 1286 { /* V = Zoom P = 5510 */ 1287 USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00 1288 }, 1289 { /* V = Draytek P = Vigor 318 */ 1290 USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00 1291 }, 1292 { /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */ 1293 USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00 1294 }, 1295 { /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */ 1296 USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00 1297 }, 1298 { /* V = Aethra P = Starmodem UM1020 */ 1299 USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00 1300 }, 1301 { /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */ 1302 USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00 1303 }, 1304 { /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */ 1305 USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 1306 }, 1307 { /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */ 1308 USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00 1309 }, 1310 {} 1311 }; 1312 1313 MODULE_DEVICE_TABLE(usb, cxacru_usb_ids); 1314 1315 static struct usbatm_driver cxacru_driver = { 1316 .driver_name = cxacru_driver_name, 1317 .bind = cxacru_bind, 1318 .heavy_init = cxacru_heavy_init, 1319 .unbind = cxacru_unbind, 1320 .atm_start = cxacru_atm_start, 1321 .atm_stop = cxacru_remove_device_files, 1322 .bulk_in = CXACRU_EP_DATA, 1323 .bulk_out = CXACRU_EP_DATA, 1324 .rx_padding = 3, 1325 .tx_padding = 11, 1326 }; 1327 1328 static int cxacru_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) 1329 { 1330 return usbatm_usb_probe(intf, id, &cxacru_driver); 1331 } 1332 1333 static struct usb_driver cxacru_usb_driver = { 1334 .name = cxacru_driver_name, 1335 .probe = cxacru_usb_probe, 1336 .disconnect = usbatm_usb_disconnect, 1337 .id_table = cxacru_usb_ids 1338 }; 1339 1340 static int __init cxacru_init(void) 1341 { 1342 return usb_register(&cxacru_usb_driver); 1343 } 1344 1345 static void __exit cxacru_cleanup(void) 1346 { 1347 usb_deregister(&cxacru_usb_driver); 1348 } 1349 1350 module_init(cxacru_init); 1351 module_exit(cxacru_cleanup); 1352 1353 MODULE_AUTHOR(DRIVER_AUTHOR); 1354 MODULE_DESCRIPTION(DRIVER_DESC); 1355 MODULE_LICENSE("GPL"); 1356 MODULE_VERSION(DRIVER_VERSION); 1357