git.oblomov.eu Git - linux-2.6/blob - drivers/usb/atm/cxacru.c

   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  *
   8  *  This program is free software; you can redistribute it and/or modify it
   9  *  under the terms of the GNU General Public License as published by the Free
  10  *  Software Foundation; either version 2 of the License, or (at your option)
  11  *  any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful, but WITHOUT
  14  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  *  more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License along with
  19  *  this program; if not, write to the Free Software Foundation, Inc., 59
  20  *  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21  *
  22  ******************************************************************************/
  23
  24 /*
  25  *  Credit is due for Josep Comas, who created the original patch to speedtch.c
  26  *  to support the different padding used by the AccessRunner (now generalized
  27  *  into usbatm), and the userspace firmware loading utility.
  28  */
  29
  30 #include <linux/module.h>
  31 #include <linux/moduleparam.h>
  32 #include <linux/kernel.h>
  33 #include <linux/timer.h>
  34 #include <linux/errno.h>
  35 #include <linux/slab.h>
  36 #include <linux/init.h>
  37 #include <linux/device.h>       /* FIXME: linux/firmware.h should include it itself */
  38 #include <linux/firmware.h>
  39
  40 #include "usbatm.h"
  41
  42 #define DRIVER_AUTHOR   "Roman Kagan, David Woodhouse, Duncan Sands"
  43 #define DRIVER_VERSION  "0.2"
  44 #define DRIVER_DESC     "Conexant AccessRunner ADSL USB modem driver"
  45
  46 static const char cxacru_driver_name[] = "cxacru";
  47
  48 #define CXACRU_EP_CMD           0x01    /* Bulk/interrupt in/out */
  49 #define CXACRU_EP_DATA          0x02    /* Bulk in/out */
  50
  51 #define CMD_PACKET_SIZE         64      /* Should be maxpacket(ep)? */
  52
  53 /* Addresses */
  54 #define PLLFCLK_ADDR    0x00350068
  55 #define PLLBCLK_ADDR    0x0035006c
  56 #define SDRAMEN_ADDR    0x00350010
  57 #define FW_ADDR         0x00801000
  58 #define BR_ADDR         0x00180600
  59 #define SIG_ADDR        0x00180500
  60 #define BR_STACK_ADDR   0x00187f10
  61
  62 /* Values */
  63 #define SDRAM_ENA       0x1
  64
  65 #define CMD_TIMEOUT     2000    /* msecs */
  66 #define POLL_INTERVAL   5000    /* msecs */
  67
  68 /* commands for interaction with the modem through the control channel before
  69  * firmware is loaded  */
  70 enum cxacru_fw_request {
  71         FW_CMD_ERR,
  72         FW_GET_VER,
  73         FW_READ_MEM,
  74         FW_WRITE_MEM,
  75         FW_RMW_MEM,
  76         FW_CHECKSUM_MEM,
  77         FW_GOTO_MEM,
  78 };
  79
  80 /* commands for interaction with the modem through the control channel once
  81  * firmware is loaded  */
  82 enum cxacru_cm_request {
  83         CM_REQUEST_UNDEFINED = 0x80,
  84         CM_REQUEST_TEST,
  85         CM_REQUEST_CHIP_GET_MAC_ADDRESS,
  86         CM_REQUEST_CHIP_GET_DP_VERSIONS,
  87         CM_REQUEST_CHIP_ADSL_LINE_START,
  88         CM_REQUEST_CHIP_ADSL_LINE_STOP,
  89         CM_REQUEST_CHIP_ADSL_LINE_GET_STATUS,
  90         CM_REQUEST_CHIP_ADSL_LINE_GET_SPEED,
  91         CM_REQUEST_CARD_INFO_GET,
  92         CM_REQUEST_CARD_DATA_GET,
  93         CM_REQUEST_CARD_DATA_SET,
  94         CM_REQUEST_COMMAND_HW_IO,
  95         CM_REQUEST_INTERFACE_HW_IO,
  96         CM_REQUEST_CARD_SERIAL_DATA_PATH_GET,
  97         CM_REQUEST_CARD_SERIAL_DATA_PATH_SET,
  98         CM_REQUEST_CARD_CONTROLLER_VERSION_GET,
  99         CM_REQUEST_CARD_GET_STATUS,
 100         CM_REQUEST_CARD_GET_MAC_ADDRESS,
 101         CM_REQUEST_CARD_GET_DATA_LINK_STATUS,
 102         CM_REQUEST_MAX,
 103 };
 104
 105 /* reply codes to the commands above */
 106 enum cxacru_cm_status {
 107         CM_STATUS_UNDEFINED,
 108         CM_STATUS_SUCCESS,
 109         CM_STATUS_ERROR,
 110         CM_STATUS_UNSUPPORTED,
 111         CM_STATUS_UNIMPLEMENTED,
 112         CM_STATUS_PARAMETER_ERROR,
 113         CM_STATUS_DBG_LOOPBACK,
 114         CM_STATUS_MAX,
 115 };
 116
 117 /* indices into CARD_INFO_GET return array */
 118 enum cxacru_info_idx {
 119         CXINF_DOWNSTREAM_RATE,
 120         CXINF_UPSTREAM_RATE,
 121         CXINF_LINK_STATUS,
 122         CXINF_LINE_STATUS,
 123         CXINF_MAC_ADDRESS_HIGH,
 124         CXINF_MAC_ADDRESS_LOW,
 125         CXINF_UPSTREAM_SNR_MARGIN,
 126         CXINF_DOWNSTREAM_SNR_MARGIN,
 127         CXINF_UPSTREAM_ATTENUATION,
 128         CXINF_DOWNSTREAM_ATTENUATION,
 129         CXINF_TRANSMITTER_POWER,
 130         CXINF_UPSTREAM_BITS_PER_FRAME,
 131         CXINF_DOWNSTREAM_BITS_PER_FRAME,
 132         CXINF_STARTUP_ATTEMPTS,
 133         CXINF_UPSTREAM_CRC_ERRORS,
 134         CXINF_DOWNSTREAM_CRC_ERRORS,
 135         CXINF_UPSTREAM_FEC_ERRORS,
 136         CXINF_DOWNSTREAM_FEC_ERRORS,
 137         CXINF_UPSTREAM_HEC_ERRORS,
 138         CXINF_DOWNSTREAM_HEC_ERRORS,
 139         CXINF_LINE_STARTABLE,
 140         CXINF_MODULATION,
 141         CXINF_ADSL_HEADEND,
 142         CXINF_ADSL_HEADEND_ENVIRONMENT,
 143         CXINF_CONTROLLER_VERSION,
 144         /* dunno what the missing two mean */
 145         CXINF_MAX = 0x1c,
 146 };
 147
 148 struct cxacru_modem_type {
 149         u32 pll_f_clk;
 150         u32 pll_b_clk;
 151         int boot_rom_patch;
 152 };
 153
 154 struct cxacru_data {
 155         struct usbatm_data *usbatm;
 156
 157         const struct cxacru_modem_type *modem_type;
 158
 159         int line_status;
 160         struct work_struct poll_work;
 161
 162         /* contol handles */
 163         struct semaphore cm_serialize;
 164         u8 *rcv_buf;
 165         u8 *snd_buf;
 166         struct urb *rcv_urb;
 167         struct urb *snd_urb;
 168         struct completion rcv_done;
 169         struct completion snd_done;
 170 };
 171
 172 /* the following three functions are stolen from drivers/usb/core/message.c */
 173 static void cxacru_blocking_completion(struct urb *urb, struct pt_regs *regs)
 174 {
 175         complete((struct completion *)urb->context);
 176 }
 177
 178 static void cxacru_timeout_kill(unsigned long data)
 179 {
 180         usb_unlink_urb((struct urb *) data);
 181 }
 182
 183 static int cxacru_start_wait_urb(struct urb *urb, struct completion *done,
 184                                  int* actual_length)
 185 {
 186         struct timer_list timer;
 187         int status;
 188
 189         init_timer(&timer);
 190         timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT);
 191         timer.data = (unsigned long) urb;
 192         timer.function = cxacru_timeout_kill;
 193         add_timer(&timer);
 194         wait_for_completion(done);
 195         status = urb->status;
 196         if (status == -ECONNRESET)
 197                 status = -ETIMEDOUT;
 198         del_timer_sync(&timer);
 199
 200         if (actual_length)
 201                 *actual_length = urb->actual_length;
 202         return status;
 203 }
 204
 205 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
 206                      u8 *wdata, int wsize, u8 *rdata, int rsize)
 207 {
 208         int ret, actlen;
 209         int offb, offd;
 210         const int stride = CMD_PACKET_SIZE - 4;
 211         u8 *wbuf = instance->snd_buf;
 212         u8 *rbuf = instance->rcv_buf;
 213         int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE;
 214         int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE;
 215
 216         if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) {
 217                 dbg("too big transfer requested");
 218                 ret = -ENOMEM;
 219                 goto fail;
 220         }
 221
 222         down(&instance->cm_serialize);
 223
 224         /* submit reading urb before the writing one */
 225         init_completion(&instance->rcv_done);
 226         ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL);
 227         if (ret < 0) {
 228                 dbg("submitting read urb for cm %#x failed", cm);
 229                 ret = ret;
 230                 goto fail;
 231         }
 232
 233         memset(wbuf, 0, wbuflen);
 234         /* handle wsize == 0 */
 235         wbuf[0] = cm;
 236         for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) {
 237                 wbuf[offb] = cm;
 238                 memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd));
 239         }
 240
 241         instance->snd_urb->transfer_buffer_length = wbuflen;
 242         init_completion(&instance->snd_done);
 243         ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL);
 244         if (ret < 0) {
 245                 dbg("submitting write urb for cm %#x failed", cm);
 246                 ret = ret;
 247                 goto fail;
 248         }
 249
 250         ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL);
 251         if (ret < 0) {
 252                 dbg("sending cm %#x failed", cm);
 253                 ret = ret;
 254                 goto fail;
 255         }
 256
 257         ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen);
 258         if (ret < 0) {
 259                 dbg("receiving cm %#x failed", cm);
 260                 ret = ret;
 261                 goto fail;
 262         }
 263         if (actlen % CMD_PACKET_SIZE || !actlen) {
 264                 dbg("response is not a positive multiple of %d: %#x",
 265                                 CMD_PACKET_SIZE, actlen);
 266                 ret = -EIO;
 267                 goto fail;
 268         }
 269
 270         /* check the return status and copy the data to the output buffer, if needed */
 271         for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) {
 272                 if (rbuf[offb] != cm) {
 273                         dbg("wrong cm %#x in response", rbuf[offb]);
 274                         ret = -EIO;
 275                         goto fail;
 276                 }
 277                 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) {
 278                         dbg("response failed: %#x", rbuf[offb + 1]);
 279                         ret = -EIO;
 280                         goto fail;
 281                 }
 282                 if (offd >= rsize)
 283                         break;
 284                 memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd));
 285                 offd += stride;
 286         }
 287
 288         ret = offd;
 289         dbg("cm %#x", cm);
 290 fail:
 291         up(&instance->cm_serialize);
 292         return ret;
 293 }
 294
 295 static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm,
 296                                u32 *data, int size)
 297 {
 298         int ret, len;
 299         u32 *buf;
 300         int offb, offd;
 301         const int stride = CMD_PACKET_SIZE / (4 * 2) - 1;
 302         int buflen =  ((size - 1) / stride + 1 + size * 2) * 4;
 303
 304         buf = kmalloc(buflen, GFP_KERNEL);
 305         if (!buf)
 306                 return -ENOMEM;
 307
 308         ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen);
 309         if (ret < 0)
 310                 goto cleanup;
 311
 312         /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */
 313         len = ret / 4;
 314         for (offb = 0; offb < len; ) {
 315                 int l = le32_to_cpu(buf[offb++]);
 316                 if (l > stride || l > (len - offb) / 2) {
 317                         dbg("wrong data length %#x in response", l);
 318                         ret = -EIO;
 319                         goto cleanup;
 320                 }
 321                 while (l--) {
 322                         offd = le32_to_cpu(buf[offb++]);
 323                         if (offd >= size) {
 324                                 dbg("wrong index %#x in response", offd);
 325                                 ret = -EIO;
 326                                 goto cleanup;
 327                         }
 328                         data[offd] = le32_to_cpu(buf[offb++]);
 329                 }
 330         }
 331
 332         ret = 0;
 333
 334 cleanup:
 335         kfree(buf);
 336         return ret;
 337 }
 338
 339 static int cxacru_card_status(struct cxacru_data *instance)
 340 {
 341         int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
 342         if (ret < 0) {          /* firmware not loaded */
 343                 dbg("cxacru_adsl_start: CARD_GET_STATUS returned %d", ret);
 344                 return ret;
 345         }
 346         return 0;
 347 }
 348
 349 static void cxacru_poll_status(struct cxacru_data *instance);
 350
 351 static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
 352                 struct atm_dev *atm_dev)
 353 {
 354         struct cxacru_data *instance = usbatm_instance->driver_data;
 355         struct device *dev = &usbatm_instance->usb_intf->dev;
 356         /*
 357         struct atm_dev *atm_dev = usbatm_instance->atm_dev;
 358         */
 359         int ret;
 360
 361         dbg("cxacru_atm_start");
 362
 363         /* Read MAC address */
 364         ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0,
 365                         atm_dev->esi, sizeof(atm_dev->esi));
 366         if (ret < 0) {
 367                 dev_err(dev, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret);
 368                 return ret;
 369         }
 370
 371         /* start ADSL */
 372         ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
 373         if (ret < 0) {
 374                 dev_err(dev, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret);
 375                 return ret;
 376         }
 377
 378         /* Start status polling */
 379         cxacru_poll_status(instance);
 380         return 0;
 381 }
 382
 383 static void cxacru_poll_status(struct cxacru_data *instance)
 384 {
 385         u32 buf[CXINF_MAX] = {};
 386         struct device *dev = &instance->usbatm->usb_intf->dev;
 387         struct atm_dev *atm_dev = instance->usbatm->atm_dev;
 388         int ret;
 389
 390         ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX);
 391         if (ret < 0) {
 392                 dev_warn(dev, "poll status: error %d\n", ret);
 393                 goto reschedule;
 394         }
 395
 396         if (instance->line_status == buf[CXINF_LINE_STATUS])
 397                 goto reschedule;
 398
 399         instance->line_status = buf[CXINF_LINE_STATUS];
 400         switch (instance->line_status) {
 401         case 0:
 402                 atm_dev->signal = ATM_PHY_SIG_LOST;
 403                 dev_info(dev, "ADSL line: down\n");
 404                 break;
 405
 406         case 1:
 407                 atm_dev->signal = ATM_PHY_SIG_LOST;
 408                 dev_info(dev, "ADSL line: attemtping to activate\n");
 409                 break;
 410
 411         case 2:
 412                 atm_dev->signal = ATM_PHY_SIG_LOST;
 413                 dev_info(dev, "ADSL line: training\n");
 414                 break;
 415
 416         case 3:
 417                 atm_dev->signal = ATM_PHY_SIG_LOST;
 418                 dev_info(dev, "ADSL line: channel analysis\n");
 419                 break;
 420
 421         case 4:
 422                 atm_dev->signal = ATM_PHY_SIG_LOST;
 423                 dev_info(dev, "ADSL line: exchange\n");
 424                 break;
 425
 426         case 5:
 427                 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424;
 428                 atm_dev->signal = ATM_PHY_SIG_FOUND;
 429
 430                 dev_info(dev, "ADSL line: up (%d kb/s down | %d kb/s up)\n",
 431                      buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]);
 432                 break;
 433
 434         case 6:
 435                 atm_dev->signal = ATM_PHY_SIG_LOST;
 436                 dev_info(dev, "ADSL line: waiting\n");
 437                 break;
 438
 439         case 7:
 440                 atm_dev->signal = ATM_PHY_SIG_LOST;
 441                 dev_info(dev, "ADSL line: initializing\n");
 442                 break;
 443
 444         default:
 445                 atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
 446                 dev_info(dev, "Unknown line state %02x\n", instance->line_status);
 447                 break;
 448         }
 449 reschedule:
 450         schedule_delayed_work(&instance->poll_work, msecs_to_jiffies(POLL_INTERVAL));
 451 }
 452
 453 static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw,
 454                      u8 code1, u8 code2, u32 addr, u8 *data, int size)
 455 {
 456         int ret;
 457         u8 *buf;
 458         int offd, offb;
 459         const int stride = CMD_PACKET_SIZE - 8;
 460
 461         buf = (u8 *) __get_free_page(GFP_KERNEL);
 462         if (!buf)
 463                 return -ENOMEM;
 464
 465         offb = offd = 0;
 466         do {
 467                 int l = min_t(int, stride, size - offd);
 468                 buf[offb++] = fw;
 469                 buf[offb++] = l;
 470                 buf[offb++] = code1;
 471                 buf[offb++] = code2;
 472                 *((u32 *) (buf + offb)) = cpu_to_le32(addr);
 473                 offb += 4;
 474                 addr += l;
 475                 if(l)
 476                         memcpy(buf + offb, data + offd, l);
 477                 if (l < stride)
 478                         memset(buf + offb + l, 0, stride - l);
 479                 offb += stride;
 480                 offd += stride;
 481                 if ((offb >= PAGE_SIZE) || (offd >= size)) {
 482                         ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD),
 483                                            buf, offb, NULL, CMD_TIMEOUT);
 484                         if (ret < 0) {
 485                                 dbg("sending fw %#x failed", fw);
 486                                 goto cleanup;
 487                         }
 488                         offb = 0;
 489                 }
 490         } while(offd < size);
 491         dbg("sent fw %#x", fw);
 492
 493         ret = 0;
 494
 495 cleanup:
 496         free_page((unsigned long) buf);
 497         return ret;
 498 }
 499
 500 static void cxacru_upload_firmware(struct cxacru_data *instance,
 501                                    const struct firmware *fw,
 502                                    const struct firmware *bp,
 503                                    const struct firmware *cf)
 504 {
 505         int ret;
 506         int off;
 507         struct usb_device *usb_dev = instance->usbatm->usb_dev;
 508         struct device *dev = &instance->usbatm->usb_intf->dev;
 509         u16 signature[] = { usb_dev->descriptor.idVendor, usb_dev->descriptor.idProduct };
 510         u32 val;
 511
 512         dbg("cxacru_upload_firmware");
 513
 514         /* FirmwarePllFClkValue */
 515         val = cpu_to_le32(instance->modem_type->pll_f_clk);
 516         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4);
 517         if (ret) {
 518                 dev_err(dev, "FirmwarePllFClkValue failed: %d\n", ret);
 519                 return;
 520         }
 521
 522         /* FirmwarePllBClkValue */
 523         val = cpu_to_le32(instance->modem_type->pll_b_clk);
 524         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4);
 525         if (ret) {
 526                 dev_err(dev, "FirmwarePllBClkValue failed: %d\n", ret);
 527                 return;
 528         }
 529
 530         /* Enable SDRAM */
 531         val = cpu_to_le32(SDRAM_ENA);
 532         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4);
 533         if (ret) {
 534                 dev_err(dev, "Enable SDRAM failed: %d\n", ret);
 535                 return;
 536         }
 537
 538         /* Firmware */
 539         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size);
 540         if (ret) {
 541                 dev_err(dev, "Firmware upload failed: %d\n", ret);
 542                 return;
 543         }
 544
 545         /* Boot ROM patch */
 546         if (instance->modem_type->boot_rom_patch) {
 547                 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size);
 548                 if (ret) {
 549                         dev_err(dev, "Boot ROM patching failed: %d\n", ret);
 550                         return;
 551                 }
 552         }
 553
 554         /* Signature */
 555         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4);
 556         if (ret) {
 557                 dev_err(dev, "Signature storing failed: %d\n", ret);
 558                 return;
 559         }
 560
 561         if (instance->modem_type->boot_rom_patch) {
 562                 val = cpu_to_le32(BR_ADDR);
 563                 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4);
 564         }
 565         else {
 566                 ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0);
 567         }
 568         if (ret) {
 569                 dev_err(dev, "Passing control to firmware failed: %d\n", ret);
 570                 return;
 571         }
 572
 573         /* Delay to allow firmware to start up. */
 574         msleep_interruptible(1000);
 575
 576         usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD));
 577         usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD));
 578         usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA));
 579         usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA));
 580
 581         ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
 582         if (ret < 0) {
 583                 dev_err(dev, "modem failed to initialize: %d\n", ret);
 584                 return;
 585         }
 586
 587         /* Load config data (le32), doing one packet at a time */
 588         if (cf)
 589                 for (off = 0; off < cf->size / 4; ) {
 590                         u32 buf[CMD_PACKET_SIZE / 4 - 1];
 591                         int i, len = min_t(int, cf->size / 4 - off, CMD_PACKET_SIZE / 4 / 2 - 1);
 592                         buf[0] = cpu_to_le32(len);
 593                         for (i = 0; i < len; i++, off++) {
 594                                 buf[i * 2 + 1] = cpu_to_le32(off);
 595                                 memcpy(buf + i * 2 + 2, cf->data + off * 4, 4);
 596                         }
 597                         ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET,
 598                                         (u8 *) buf, len, NULL, 0);
 599                         if (ret < 0) {
 600                                 dev_err(dev, "load config data failed: %d\n", ret);
 601                                 return;
 602                         }
 603                 }
 604
 605         msleep_interruptible(4000);
 606 }
 607
 608 static int cxacru_find_firmware(struct cxacru_data *instance,
 609                                 char* phase, const struct firmware **fw_p)
 610 {
 611         struct device *dev = &instance->usbatm->usb_intf->dev;
 612         char buf[16];
 613
 614         sprintf(buf, "cxacru-%s.bin", phase);
 615         dbg("cxacru_find_firmware: looking for %s", buf);
 616
 617         if (request_firmware(fw_p, buf, dev)) {
 618                 dev_dbg(dev, "no stage %s firmware found\n", phase);
 619                 return -ENOENT;
 620         }
 621
 622         dev_info(dev, "found firmware %s\n", buf);
 623
 624         return 0;
 625 }
 626
 627 static int cxacru_heavy_init(struct usbatm_data *usbatm_instance,
 628                              struct usb_interface *usb_intf)
 629 {
 630         struct device *dev = &usbatm_instance->usb_intf->dev;
 631         const struct firmware *fw, *bp, *cf;
 632         struct cxacru_data *instance = usbatm_instance->driver_data;
 633
 634         int ret = cxacru_find_firmware(instance, "fw", &fw);
 635         if (ret) {
 636                 dev_warn(dev, "firmware (cxacru-fw.bin) unavailable (hotplug misconfiguration?)\n");
 637                 return ret;
 638         }
 639
 640         if (instance->modem_type->boot_rom_patch) {
 641                 ret = cxacru_find_firmware(instance, "bp", &bp);
 642                 if (ret) {
 643                         dev_warn(dev, "boot ROM patch (cxacru-bp.bin) unavailable (hotplug misconfiguration?)\n");
 644                         release_firmware(fw);
 645                         return ret;
 646                 }
 647         }
 648
 649         if (cxacru_find_firmware(instance, "cf", &cf))          /* optional */
 650                 cf = NULL;
 651
 652         cxacru_upload_firmware(instance, fw, bp, cf);
 653
 654         if (cf)
 655                 release_firmware(cf);
 656         if (instance->modem_type->boot_rom_patch)
 657                 release_firmware(bp);
 658         release_firmware(fw);
 659
 660         ret = cxacru_card_status(instance);
 661         if (ret)
 662                 dbg("modem initialisation failed");
 663         else
 664                 dbg("done setting up the modem");
 665
 666         return ret;
 667 }
 668
 669 static int cxacru_bind(struct usbatm_data *usbatm_instance,
 670                        struct usb_interface *intf, const struct usb_device_id *id,
 671                        int *need_heavy_init)
 672 {
 673         struct cxacru_data *instance;
 674         struct usb_device *usb_dev = interface_to_usbdev(intf);
 675         int ret;
 676
 677         /* instance init */
 678         instance = kmalloc(sizeof(*instance), GFP_KERNEL);
 679         if (!instance) {
 680                 dbg("cxacru_bind: no memory for instance data");
 681                 return -ENOMEM;
 682         }
 683
 684         memset(instance, 0, sizeof(*instance));
 685
 686         instance->usbatm = usbatm_instance;
 687         instance->modem_type = (struct cxacru_modem_type *) id->driver_info;
 688
 689         instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL);
 690         if (!instance->rcv_buf) {
 691                 dbg("cxacru_bind: no memory for rcv_buf");
 692                 ret = -ENOMEM;
 693                 goto fail;
 694         }
 695         instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL);
 696         if (!instance->snd_buf) {
 697                 dbg("cxacru_bind: no memory for snd_buf");
 698                 ret = -ENOMEM;
 699                 goto fail;
 700         }
 701         instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL);
 702         if (!instance->rcv_urb) {
 703                 dbg("cxacru_bind: no memory for rcv_urb");
 704                 ret = -ENOMEM;
 705                 goto fail;
 706         }
 707         instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL);
 708         if (!instance->snd_urb) {
 709                 dbg("cxacru_bind: no memory for snd_urb");
 710                 ret = -ENOMEM;
 711                 goto fail;
 712         }
 713
 714         usb_fill_int_urb(instance->rcv_urb,
 715                         usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD),
 716                         instance->rcv_buf, PAGE_SIZE,
 717                         cxacru_blocking_completion, &instance->rcv_done, 1);
 718
 719         usb_fill_int_urb(instance->snd_urb,
 720                         usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD),
 721                         instance->snd_buf, PAGE_SIZE,
 722                         cxacru_blocking_completion, &instance->snd_done, 4);
 723
 724         init_MUTEX(&instance->cm_serialize);
 725
 726         INIT_WORK(&instance->poll_work, (void *)cxacru_poll_status, instance);
 727
 728         usbatm_instance->driver_data = instance;
 729
 730         *need_heavy_init = cxacru_card_status(instance);
 731
 732         return 0;
 733
 734  fail:
 735         free_page((unsigned long) instance->snd_buf);
 736         free_page((unsigned long) instance->rcv_buf);
 737         usb_free_urb(instance->snd_urb);
 738         usb_free_urb(instance->rcv_urb);
 739         kfree(instance);
 740
 741         return ret;
 742 }
 743
 744 static void cxacru_unbind(struct usbatm_data *usbatm_instance,
 745                 struct usb_interface *intf)
 746 {
 747         struct cxacru_data *instance = usbatm_instance->driver_data;
 748
 749         dbg("cxacru_unbind entered");
 750
 751         if (!instance) {
 752                 dbg("cxacru_unbind: NULL instance!");
 753                 return;
 754         }
 755
 756         while (!cancel_delayed_work(&instance->poll_work))
 757                flush_scheduled_work();
 758
 759         usb_kill_urb(instance->snd_urb);
 760         usb_kill_urb(instance->rcv_urb);
 761         usb_free_urb(instance->snd_urb);
 762         usb_free_urb(instance->rcv_urb);
 763
 764         free_page((unsigned long) instance->snd_buf);
 765         free_page((unsigned long) instance->rcv_buf);
 766         kfree(instance);
 767
 768         usbatm_instance->driver_data = NULL;
 769 }
 770
 771 static const struct cxacru_modem_type cxacru_cafe = {
 772         .pll_f_clk = 0x02d874df,
 773         .pll_b_clk = 0x0196a51a,
 774         .boot_rom_patch = 1,
 775 };
 776
 777 static const struct cxacru_modem_type cxacru_cb00 = {
 778         .pll_f_clk = 0x5,
 779         .pll_b_clk = 0x3,
 780         .boot_rom_patch = 0,
 781 };
 782
 783 static const struct usb_device_id cxacru_usb_ids[] = {
 784         { /* V = Conexant                       P = ADSL modem (Euphrates project)      */
 785                 USB_DEVICE(0x0572, 0xcafe),     .driver_info = (unsigned long) &cxacru_cafe
 786         },
 787         { /* V = Conexant                       P = ADSL modem (Hasbani project)        */
 788                 USB_DEVICE(0x0572, 0xcb00),     .driver_info = (unsigned long) &cxacru_cb00
 789         },
 790         { /* V = Conexant                       P = ADSL modem                          */
 791                 USB_DEVICE(0x0572, 0xcb01),     .driver_info = (unsigned long) &cxacru_cb00
 792         },
 793         { /* V = Conexant                       P = ADSL modem                          */
 794                 USB_DEVICE(0x0572, 0xcb06),     .driver_info = (unsigned long) &cxacru_cb00
 795         },
 796         { /* V = Olitec                         P = ADSL modem version 2                */
 797                 USB_DEVICE(0x08e3, 0x0100),     .driver_info = (unsigned long) &cxacru_cafe
 798         },
 799         { /* V = Olitec                         P = ADSL modem version 3                */
 800                 USB_DEVICE(0x08e3, 0x0102),     .driver_info = (unsigned long) &cxacru_cb00
 801         },
 802         { /* V = Trust/Amigo Technology Co.     P = AMX-CA86U                           */
 803                 USB_DEVICE(0x0eb0, 0x3457),     .driver_info = (unsigned long) &cxacru_cafe
 804         },
 805         { /* V = Zoom                           P = 5510                                */
 806                 USB_DEVICE(0x1803, 0x5510),     .driver_info = (unsigned long) &cxacru_cb00
 807         },
 808         { /* V = Draytek                        P = Vigor 318                           */
 809                 USB_DEVICE(0x0675, 0x0200),     .driver_info = (unsigned long) &cxacru_cb00
 810         },
 811         { /* V = Zyxel                          P = 630-C1 aka OMNI ADSL USB (Annex A)  */
 812                 USB_DEVICE(0x0586, 0x330a),     .driver_info = (unsigned long) &cxacru_cb00
 813         },
 814         { /* V = Zyxel                          P = 630-C3 aka OMNI ADSL USB (Annex B)  */
 815                 USB_DEVICE(0x0586, 0x330b),     .driver_info = (unsigned long) &cxacru_cb00
 816         },
 817         { /* V = Aethra                         P = Starmodem UM1020                    */
 818                 USB_DEVICE(0x0659, 0x0020),     .driver_info = (unsigned long) &cxacru_cb00
 819         },
 820         { /* V = Aztech Systems                 P = ? AKA Pirelli AUA-010               */
 821                 USB_DEVICE(0x0509, 0x0812),     .driver_info = (unsigned long) &cxacru_cb00
 822         },
 823         { /* V = Netopia                        P = Cayman 3341(Annex A)/3351(Annex B)  */
 824                 USB_DEVICE(0x100d, 0xcb01),     .driver_info = (unsigned long) &cxacru_cb00
 825         },
 826         { /* V = Netopia                        P = Cayman 3342(Annex A)/3352(Annex B)  */
 827                 USB_DEVICE(0x100d, 0x3342),     .driver_info = (unsigned long) &cxacru_cb00
 828         },
 829         {}
 830 };
 831
 832 MODULE_DEVICE_TABLE(usb, cxacru_usb_ids);
 833
 834 static struct usbatm_driver cxacru_driver = {
 835         .owner          = THIS_MODULE,
 836         .driver_name    = cxacru_driver_name,
 837         .bind           = cxacru_bind,
 838         .heavy_init     = cxacru_heavy_init,
 839         .unbind         = cxacru_unbind,
 840         .atm_start      = cxacru_atm_start,
 841         .in             = CXACRU_EP_DATA,
 842         .out            = CXACRU_EP_DATA,
 843         .rx_padding     = 3,
 844         .tx_padding     = 11,
 845 };
 846
 847 static int cxacru_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
 848 {
 849         return usbatm_usb_probe(intf, id, &cxacru_driver);
 850 }
 851
 852 static struct usb_driver cxacru_usb_driver = {
 853         .owner          = THIS_MODULE,
 854         .name           = cxacru_driver_name,
 855         .probe          = cxacru_usb_probe,
 856         .disconnect     = usbatm_usb_disconnect,
 857         .id_table       = cxacru_usb_ids
 858 };
 859
 860 static int __init cxacru_init(void)
 861 {
 862         return usb_register(&cxacru_usb_driver);
 863 }
 864
 865 static void __exit cxacru_cleanup(void)
 866 {
 867         usb_deregister(&cxacru_usb_driver);
 868 }
 869
 870 module_init(cxacru_init);
 871 module_exit(cxacru_cleanup);
 872
 873 MODULE_AUTHOR(DRIVER_AUTHOR);
 874 MODULE_DESCRIPTION(DRIVER_DESC);
 875 MODULE_LICENSE("GPL");
 876 MODULE_VERSION(DRIVER_VERSION);