err.no Git - linux-2.6/blob - drivers/net/wireless/libertas/if_usb.c

   1 /**
   2   * This file contains functions used in USB interface module.
   3   */
   4 #include <linux/delay.h>
   5 #include <linux/moduleparam.h>
   6 #include <linux/firmware.h>
   7 #include <linux/netdevice.h>
   8 #include <linux/usb.h>
   9
  10 #define DRV_NAME "usb8xxx"
  11
  12 #include "host.h"
  13 #include "decl.h"
  14 #include "defs.h"
  15 #include "dev.h"
  16 #include "cmd.h"
  17 #include "if_usb.h"
  18
  19 #define MESSAGE_HEADER_LEN      4
  20
  21 static char *lbs_fw_name = "usb8388.bin";
  22 module_param_named(fw_name, lbs_fw_name, charp, 0644);
  23
  24 static struct usb_device_id if_usb_table[] = {
  25         /* Enter the device signature inside */
  26         { USB_DEVICE(0x1286, 0x2001) },
  27         { USB_DEVICE(0x05a3, 0x8388) },
  28         {}      /* Terminating entry */
  29 };
  30
  31 MODULE_DEVICE_TABLE(usb, if_usb_table);
  32
  33 static void if_usb_receive(struct urb *urb);
  34 static void if_usb_receive_fwload(struct urb *urb);
  35 static int if_usb_prog_firmware(struct usb_card_rec *cardp);
  36 static int if_usb_host_to_card(struct lbs_private *priv,
  37         u8 type,
  38         u8 *payload,
  39         u16 nb);
  40 static int if_usb_get_int_status(struct lbs_private *priv, u8 *);
  41 static int if_usb_read_event_cause(struct lbs_private *);
  42 static int usb_tx_block(struct usb_card_rec *cardp, u8 *payload, u16 nb);
  43 static void if_usb_free(struct usb_card_rec *cardp);
  44 static int if_usb_submit_rx_urb(struct usb_card_rec *cardp);
  45 static int if_usb_reset_device(struct usb_card_rec *cardp);
  46
  47 /**
  48  *  @brief  call back function to handle the status of the URB
  49  *  @param urb          pointer to urb structure
  50  *  @return             N/A
  51  */
  52 static void if_usb_write_bulk_callback(struct urb *urb)
  53 {
  54         struct usb_card_rec *cardp = (struct usb_card_rec *) urb->context;
  55
  56         /* handle the transmission complete validations */
  57
  58         if (urb->status == 0) {
  59                 struct lbs_private *priv = cardp->priv;
  60
  61                 /*
  62                 lbs_deb_usbd(&urb->dev->dev, "URB status is successfull\n");
  63                 lbs_deb_usbd(&urb->dev->dev, "Actual length transmitted %d\n",
  64                        urb->actual_length);
  65                 */
  66
  67                 /* Used for both firmware TX and regular TX.  priv isn't
  68                  * valid at firmware load time.
  69                  */
  70                 if (priv)
  71                         lbs_host_to_card_done(priv);
  72         } else {
  73                 /* print the failure status number for debug */
  74                 lbs_pr_info("URB in failure status: %d\n", urb->status);
  75         }
  76
  77         return;
  78 }
  79
  80 /**
  81  *  @brief  free tx/rx urb, skb and rx buffer
  82  *  @param cardp        pointer usb_card_rec
  83  *  @return             N/A
  84  */
  85 static void if_usb_free(struct usb_card_rec *cardp)
  86 {
  87         lbs_deb_enter(LBS_DEB_USB);
  88
  89         /* Unlink tx & rx urb */
  90         usb_kill_urb(cardp->tx_urb);
  91         usb_kill_urb(cardp->rx_urb);
  92
  93         usb_free_urb(cardp->tx_urb);
  94         cardp->tx_urb = NULL;
  95
  96         usb_free_urb(cardp->rx_urb);
  97         cardp->rx_urb = NULL;
  98
  99         kfree(cardp->bulk_out_buffer);
 100         cardp->bulk_out_buffer = NULL;
 101
 102         lbs_deb_leave(LBS_DEB_USB);
 103 }
 104
 105 static void if_usb_set_boot2_ver(struct lbs_private *priv)
 106 {
 107         struct cmd_ds_set_boot2_ver b2_cmd;
 108
 109         b2_cmd.action = 0;
 110         b2_cmd.version = priv->boot2_version;
 111
 112         if (lbs_cmd(priv, CMD_SET_BOOT2_VER, b2_cmd, NULL, 0))
 113                 lbs_deb_usb("Setting boot2 version failed\n");
 114 }
 115
 116 static void if_usb_fw_timeo(unsigned long priv)
 117 {
 118         struct usb_card_rec *cardp = (void *)priv;
 119
 120         if (cardp->fwdnldover) {
 121                 lbs_deb_usb("Download complete, no event. Assuming success\n");
 122         } else {
 123                 lbs_pr_err("Download timed out\n");
 124                 cardp->surprise_removed = 1;
 125         }
 126         wake_up(&cardp->fw_wq);
 127 }
 128 /**
 129  *  @brief sets the configuration values
 130  *  @param ifnum        interface number
 131  *  @param id           pointer to usb_device_id
 132  *  @return             0 on success, error code on failure
 133  */
 134 static int if_usb_probe(struct usb_interface *intf,
 135                         const struct usb_device_id *id)
 136 {
 137         struct usb_device *udev;
 138         struct usb_host_interface *iface_desc;
 139         struct usb_endpoint_descriptor *endpoint;
 140         struct lbs_private *priv;
 141         struct usb_card_rec *cardp;
 142         int i;
 143
 144         udev = interface_to_usbdev(intf);
 145
 146         cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
 147         if (!cardp) {
 148                 lbs_pr_err("Out of memory allocating private data.\n");
 149                 goto error;
 150         }
 151
 152         setup_timer(&cardp->fw_timeout, if_usb_fw_timeo, (unsigned long)cardp);
 153         init_waitqueue_head(&cardp->fw_wq);
 154
 155         cardp->udev = udev;
 156         iface_desc = intf->cur_altsetting;
 157
 158         lbs_deb_usbd(&udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X"
 159                " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n",
 160                      le16_to_cpu(udev->descriptor.bcdUSB),
 161                      udev->descriptor.bDeviceClass,
 162                      udev->descriptor.bDeviceSubClass,
 163                      udev->descriptor.bDeviceProtocol);
 164
 165         for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
 166                 endpoint = &iface_desc->endpoint[i].desc;
 167                 if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
 168                     && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 169                         USB_ENDPOINT_XFER_BULK)) {
 170                         /* we found a bulk in endpoint */
 171                         lbs_deb_usbd(&udev->dev, "Bulk in size is %d\n",
 172                                      le16_to_cpu(endpoint->wMaxPacketSize));
 173                         if (!(cardp->rx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
 174                                 lbs_deb_usbd(&udev->dev,
 175                                        "Rx URB allocation failed\n");
 176                                 goto dealloc;
 177                         }
 178                         cardp->bulk_in_size =
 179                                 le16_to_cpu(endpoint->wMaxPacketSize);
 180                         cardp->bulk_in_endpointAddr =
 181                             (endpoint->
 182                              bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
 183                         lbs_deb_usbd(&udev->dev, "in_endpoint = %d\n",
 184                                endpoint->bEndpointAddress);
 185                 }
 186
 187                 if (((endpoint->
 188                       bEndpointAddress & USB_ENDPOINT_DIR_MASK) ==
 189                      USB_DIR_OUT)
 190                     && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
 191                         USB_ENDPOINT_XFER_BULK)) {
 192                         /* We found bulk out endpoint */
 193                         if (!(cardp->tx_urb = usb_alloc_urb(0, GFP_KERNEL))) {
 194                                 lbs_deb_usbd(&udev->dev,
 195                                        "Tx URB allocation failed\n");
 196                                 goto dealloc;
 197                         }
 198
 199                         cardp->bulk_out_size =
 200                                 le16_to_cpu(endpoint->wMaxPacketSize);
 201                         lbs_deb_usbd(&udev->dev,
 202                                      "Bulk out size is %d\n",
 203                                      le16_to_cpu(endpoint->wMaxPacketSize));
 204                         cardp->bulk_out_endpointAddr =
 205                             endpoint->bEndpointAddress;
 206                         lbs_deb_usbd(&udev->dev, "out_endpoint = %d\n",
 207                                     endpoint->bEndpointAddress);
 208                         cardp->bulk_out_buffer =
 209                             kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE,
 210                                     GFP_KERNEL);
 211
 212                         if (!cardp->bulk_out_buffer) {
 213                                 lbs_deb_usbd(&udev->dev,
 214                                        "Could not allocate buffer\n");
 215                                 goto dealloc;
 216                         }
 217                 }
 218         }
 219
 220         /* Upload firmware */
 221         cardp->rinfo.cardp = cardp;
 222         if (if_usb_prog_firmware(cardp)) {
 223                 lbs_deb_usbd(&udev->dev, "FW upload failed\n");
 224                 goto err_prog_firmware;
 225         }
 226
 227         if (!(priv = lbs_add_card(cardp, &udev->dev)))
 228                 goto err_prog_firmware;
 229
 230         cardp->priv = priv;
 231         cardp->priv->fw_ready = 1;
 232
 233         priv->hw_host_to_card = if_usb_host_to_card;
 234         priv->hw_get_int_status = if_usb_get_int_status;
 235         priv->hw_read_event_cause = if_usb_read_event_cause;
 236         priv->boot2_version = udev->descriptor.bcdDevice;
 237
 238         if_usb_submit_rx_urb(cardp);
 239
 240         if (lbs_start_card(priv))
 241                 goto err_start_card;
 242
 243         if_usb_set_boot2_ver(priv);
 244
 245         usb_get_dev(udev);
 246         usb_set_intfdata(intf, cardp);
 247
 248         return 0;
 249
 250 err_start_card:
 251         lbs_remove_card(priv);
 252 err_prog_firmware:
 253         if_usb_reset_device(cardp);
 254 dealloc:
 255         if_usb_free(cardp);
 256
 257 error:
 258         return -ENOMEM;
 259 }
 260
 261 /**
 262  *  @brief free resource and cleanup
 263  *  @param intf         USB interface structure
 264  *  @return             N/A
 265  */
 266 static void if_usb_disconnect(struct usb_interface *intf)
 267 {
 268         struct usb_card_rec *cardp = usb_get_intfdata(intf);
 269         struct lbs_private *priv = (struct lbs_private *) cardp->priv;
 270
 271         lbs_deb_enter(LBS_DEB_MAIN);
 272
 273         /* Update Surprise removed to TRUE */
 274         cardp->surprise_removed = 1;
 275
 276         if (priv) {
 277
 278                 priv->surpriseremoved = 1;
 279                 lbs_stop_card(priv);
 280                 lbs_remove_card(priv);
 281         }
 282
 283         /* this is (apparently?) necessary for future usage of the device */
 284         lbs_prepare_and_send_command(priv, CMD_802_11_RESET, CMD_ACT_HALT,
 285                         0, 0, NULL);
 286
 287         /* Unlink and free urb */
 288         if_usb_free(cardp);
 289
 290         usb_set_intfdata(intf, NULL);
 291         usb_put_dev(interface_to_usbdev(intf));
 292
 293         lbs_deb_leave(LBS_DEB_MAIN);
 294 }
 295
 296 /**
 297  *  @brief  This function download FW
 298  *  @param priv         pointer to struct lbs_private
 299  *  @return             0
 300  */
 301 static int if_usb_send_fw_pkt(struct usb_card_rec *cardp)
 302 {
 303         struct FWData *fwdata;
 304         struct fwheader *fwheader;
 305         u8 *firmware = cardp->fw->data;
 306
 307         fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC);
 308
 309         if (!fwdata)
 310                 return -1;
 311
 312         fwheader = &fwdata->fwheader;
 313
 314         if (!cardp->CRC_OK) {
 315                 cardp->totalbytes = cardp->fwlastblksent;
 316                 cardp->fwseqnum = cardp->lastseqnum - 1;
 317         }
 318
 319         /*
 320         lbs_deb_usbd(&cardp->udev->dev, "totalbytes = %d\n",
 321                     cardp->totalbytes);
 322         */
 323
 324         memcpy(fwheader, &firmware[cardp->totalbytes],
 325                sizeof(struct fwheader));
 326
 327         cardp->fwlastblksent = cardp->totalbytes;
 328         cardp->totalbytes += sizeof(struct fwheader);
 329
 330         /* lbs_deb_usbd(&cardp->udev->dev,"Copy Data\n"); */
 331         memcpy(fwdata->data, &firmware[cardp->totalbytes],
 332                le32_to_cpu(fwdata->fwheader.datalength));
 333
 334         /*
 335         lbs_deb_usbd(&cardp->udev->dev,
 336                     "Data length = %d\n", le32_to_cpu(fwdata->fwheader.datalength));
 337         */
 338
 339         cardp->fwseqnum = cardp->fwseqnum + 1;
 340
 341         fwdata->seqnum = cpu_to_le32(cardp->fwseqnum);
 342         cardp->lastseqnum = cardp->fwseqnum;
 343         cardp->totalbytes += le32_to_cpu(fwdata->fwheader.datalength);
 344
 345         if (fwheader->dnldcmd == cpu_to_le32(FW_HAS_DATA_TO_RECV)) {
 346                 /*
 347                 lbs_deb_usbd(&cardp->udev->dev, "There are data to follow\n");
 348                 lbs_deb_usbd(&cardp->udev->dev,
 349                             "seqnum = %d totalbytes = %d\n", cardp->fwseqnum,
 350                             cardp->totalbytes);
 351                 */
 352                 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
 353                 usb_tx_block(cardp, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
 354
 355         } else if (fwdata->fwheader.dnldcmd == cpu_to_le32(FW_HAS_LAST_BLOCK)) {
 356                 /*
 357                 lbs_deb_usbd(&cardp->udev->dev,
 358                             "Host has finished FW downloading\n");
 359                 lbs_deb_usbd(&cardp->udev->dev,
 360                             "Donwloading FW JUMP BLOCK\n");
 361                 */
 362                 memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE);
 363                 usb_tx_block(cardp, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE);
 364                 cardp->fwfinalblk = 1;
 365         }
 366
 367         /*
 368         lbs_deb_usbd(&cardp->udev->dev,
 369                     "The firmware download is done size is %d\n",
 370                     cardp->totalbytes);
 371         */
 372
 373         kfree(fwdata);
 374
 375         return 0;
 376 }
 377
 378 static int if_usb_reset_device(struct usb_card_rec *cardp)
 379 {
 380         struct cmd_ds_command *cmd = (void *)&cardp->bulk_out_buffer[4];
 381         int ret;
 382
 383         lbs_deb_enter(LBS_DEB_USB);
 384
 385         *(__le32 *)cardp->bulk_out_buffer = cpu_to_le32(CMD_TYPE_REQUEST);
 386
 387         cmd->command = cpu_to_le16(CMD_802_11_RESET);
 388         cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_reset) + S_DS_GEN);
 389         cmd->result = cpu_to_le16(0);
 390         cmd->seqnum = cpu_to_le16(0x5a5a);
 391         cmd->params.reset.action = cpu_to_le16(CMD_ACT_HALT);
 392         usb_tx_block(cardp, cardp->bulk_out_buffer, 4 + S_DS_GEN + sizeof(struct cmd_ds_802_11_reset));
 393
 394         msleep(100);
 395         ret = usb_reset_device(cardp->udev);
 396         msleep(100);
 397
 398         lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
 399
 400         return ret;
 401 }
 402
 403 /**
 404  *  @brief This function transfer the data to the device.
 405  *  @param priv         pointer to struct lbs_private
 406  *  @param payload      pointer to payload data
 407  *  @param nb           data length
 408  *  @return             0 or -1
 409  */
 410 static int usb_tx_block(struct usb_card_rec *cardp, u8 * payload, u16 nb)
 411 {
 412         int ret = -1;
 413
 414         /* check if device is removed */
 415         if (cardp->surprise_removed) {
 416                 lbs_deb_usbd(&cardp->udev->dev, "Device removed\n");
 417                 goto tx_ret;
 418         }
 419
 420         usb_fill_bulk_urb(cardp->tx_urb, cardp->udev,
 421                           usb_sndbulkpipe(cardp->udev,
 422                                           cardp->bulk_out_endpointAddr),
 423                           payload, nb, if_usb_write_bulk_callback, cardp);
 424
 425         cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET;
 426
 427         if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) {
 428                 /*  transfer failed */
 429                 lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb failed: %d\n", ret);
 430                 ret = -1;
 431         } else {
 432                 /* lbs_deb_usbd(&cardp->udev->dev, "usb_submit_urb success\n"); */
 433                 ret = 0;
 434         }
 435
 436 tx_ret:
 437         return ret;
 438 }
 439
 440 static int __if_usb_submit_rx_urb(struct usb_card_rec *cardp,
 441                                   void (*callbackfn)(struct urb *urb))
 442 {
 443         struct sk_buff *skb;
 444         struct read_cb_info *rinfo = &cardp->rinfo;
 445         int ret = -1;
 446
 447         if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) {
 448                 lbs_pr_err("No free skb\n");
 449                 goto rx_ret;
 450         }
 451
 452         rinfo->skb = skb;
 453
 454         /* Fill the receive configuration URB and initialise the Rx call back */
 455         usb_fill_bulk_urb(cardp->rx_urb, cardp->udev,
 456                           usb_rcvbulkpipe(cardp->udev,
 457                                           cardp->bulk_in_endpointAddr),
 458                           (void *) (skb->tail + (size_t) IPFIELD_ALIGN_OFFSET),
 459                           MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn,
 460                           rinfo);
 461
 462         cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET;
 463
 464         /* lbs_deb_usbd(&cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); */
 465         if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) {
 466                 /* handle failure conditions */
 467                 lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB failed: %d\n", ret);
 468                 kfree_skb(skb);
 469                 rinfo->skb = NULL;
 470                 ret = -1;
 471         } else {
 472                 /* lbs_deb_usbd(&cardp->udev->dev, "Submit Rx URB success\n"); */
 473                 ret = 0;
 474         }
 475
 476 rx_ret:
 477         return ret;
 478 }
 479
 480 static int if_usb_submit_rx_urb_fwload(struct usb_card_rec *cardp)
 481 {
 482         return __if_usb_submit_rx_urb(cardp, &if_usb_receive_fwload);
 483 }
 484
 485 static int if_usb_submit_rx_urb(struct usb_card_rec *cardp)
 486 {
 487         return __if_usb_submit_rx_urb(cardp, &if_usb_receive);
 488 }
 489
 490 static void if_usb_receive_fwload(struct urb *urb)
 491 {
 492         struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
 493         struct sk_buff *skb = rinfo->skb;
 494         struct usb_card_rec *cardp = (struct usb_card_rec *)rinfo->cardp;
 495         struct fwsyncheader *syncfwheader;
 496         struct bootcmdrespStr bootcmdresp;
 497
 498         if (urb->status) {
 499                 lbs_deb_usbd(&cardp->udev->dev,
 500                             "URB status is failed during fw load\n");
 501                 kfree_skb(skb);
 502                 return;
 503         }
 504
 505         if (cardp->fwdnldover) {
 506                 __le32 *tmp = (__le32 *)(skb->data + IPFIELD_ALIGN_OFFSET);
 507
 508                 if (tmp[0] == cpu_to_le32(CMD_TYPE_INDICATION) &&
 509                     tmp[1] == cpu_to_le32(MACREG_INT_CODE_FIRMWARE_READY)) {
 510                         lbs_pr_info("Firmware ready event received\n");
 511                         wake_up(&cardp->fw_wq);
 512                 } else {
 513                         lbs_deb_usb("Waiting for confirmation; got %x %x\n", le32_to_cpu(tmp[0]),
 514                                     le32_to_cpu(tmp[1]));
 515                         if_usb_submit_rx_urb_fwload(cardp);
 516                 }
 517                 kfree_skb(skb);
 518                 return;
 519         }
 520         if (cardp->bootcmdresp <= 0) {
 521                 memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET,
 522                         sizeof(bootcmdresp));
 523                 if (le16_to_cpu(cardp->udev->descriptor.bcdDevice) < 0x3106) {
 524                         kfree_skb(skb);
 525                         if_usb_submit_rx_urb_fwload(cardp);
 526                         cardp->bootcmdresp = 1;
 527                         lbs_deb_usbd(&cardp->udev->dev,
 528                                     "Received valid boot command response\n");
 529                         return;
 530                 }
 531                 if (bootcmdresp.u32magicnumber != cpu_to_le32(BOOT_CMD_MAGIC_NUMBER)) {
 532                         if (bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_REQUEST) ||
 533                             bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_DATA) ||
 534                             bootcmdresp.u32magicnumber == cpu_to_le32(CMD_TYPE_INDICATION)) {
 535                                 if (!cardp->bootcmdresp)
 536                                         lbs_pr_info("Firmware already seems alive; resetting\n");
 537                                 cardp->bootcmdresp = -1;
 538                         } else {
 539                                 lbs_pr_info("boot cmd response wrong magic number (0x%x)\n",
 540                                             le32_to_cpu(bootcmdresp.u32magicnumber));
 541                         }
 542                 } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) {
 543                         lbs_pr_info(
 544                                 "boot cmd response cmd_tag error (%d)\n",
 545                                 bootcmdresp.u8cmd_tag);
 546                 } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) {
 547                         lbs_pr_info(
 548                                 "boot cmd response result error (%d)\n",
 549                                 bootcmdresp.u8result);
 550                 } else {
 551                         cardp->bootcmdresp = 1;
 552                         lbs_deb_usbd(&cardp->udev->dev,
 553                                     "Received valid boot command response\n");
 554                 }
 555                 kfree_skb(skb);
 556                 if_usb_submit_rx_urb_fwload(cardp);
 557                 return;
 558         }
 559
 560         syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC);
 561         if (!syncfwheader) {
 562                 lbs_deb_usbd(&cardp->udev->dev, "Failure to allocate syncfwheader\n");
 563                 kfree_skb(skb);
 564                 return;
 565         }
 566
 567         memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET,
 568                         sizeof(struct fwsyncheader));
 569
 570         if (!syncfwheader->cmd) {
 571                 /*
 572                 lbs_deb_usbd(&cardp->udev->dev,
 573                             "FW received Blk with correct CRC\n");
 574                 lbs_deb_usbd(&cardp->udev->dev,
 575                             "FW received Blk seqnum = %d\n",
 576                        syncfwheader->seqnum);
 577                 */
 578                 cardp->CRC_OK = 1;
 579         } else {
 580                 lbs_deb_usbd(&cardp->udev->dev,
 581                             "FW received Blk with CRC error\n");
 582                 cardp->CRC_OK = 0;
 583         }
 584
 585         kfree_skb(skb);
 586
 587         /* reschedule timer for 200ms hence */
 588         mod_timer(&cardp->fw_timeout, jiffies + (HZ/5));
 589
 590         if (cardp->fwfinalblk) {
 591                 cardp->fwdnldover = 1;
 592                 goto exit;
 593         }
 594
 595         if_usb_send_fw_pkt(cardp);
 596
 597  exit:
 598         if_usb_submit_rx_urb_fwload(cardp);
 599
 600         kfree(syncfwheader);
 601
 602         return;
 603 }
 604
 605 #define MRVDRV_MIN_PKT_LEN      30
 606
 607 static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
 608                                        struct usb_card_rec *cardp,
 609                                        struct lbs_private *priv)
 610 {
 611         if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE +
 612             MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) {
 613                 lbs_deb_usbd(&cardp->udev->dev,
 614                             "Packet length is Invalid\n");
 615                 kfree_skb(skb);
 616                 return;
 617         }
 618
 619         skb_reserve(skb, IPFIELD_ALIGN_OFFSET);
 620         skb_put(skb, recvlength);
 621         skb_pull(skb, MESSAGE_HEADER_LEN);
 622         lbs_process_rxed_packet(priv, skb);
 623         priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
 624 }
 625
 626 static inline void process_cmdrequest(int recvlength, u8 *recvbuff,
 627                                       struct sk_buff *skb,
 628                                       struct usb_card_rec *cardp,
 629                                       struct lbs_private *priv)
 630 {
 631         u8 *cmdbuf;
 632         if (recvlength > LBS_CMD_BUFFER_SIZE) {
 633                 lbs_deb_usbd(&cardp->udev->dev,
 634                             "The receive buffer is too large\n");
 635                 kfree_skb(skb);
 636                 return;
 637         }
 638
 639         if (!in_interrupt())
 640                 BUG();
 641
 642         spin_lock(&priv->driver_lock);
 643         /* take care of cur_cmd = NULL case by reading the
 644          * data to clear the interrupt */
 645         if (!priv->cur_cmd) {
 646                 lbs_deb_hex(LBS_DEB_HOST, "Unsolicited CMD_RESP", (void *) recvbuff + MESSAGE_HEADER_LEN, priv->upld_len);
 647                 cmdbuf = priv->upld_buf;
 648                 priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
 649         } else
 650                 cmdbuf = (u8 *) priv->cur_cmd->cmdbuf;
 651
 652         cardp->usb_int_cause |= MRVDRV_CMD_UPLD_RDY;
 653         priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
 654         memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN,
 655                priv->upld_len);
 656
 657         kfree_skb(skb);
 658         lbs_interrupt(priv);
 659         spin_unlock(&priv->driver_lock);
 660
 661         lbs_deb_usbd(&cardp->udev->dev,
 662                     "Wake up main thread to handle cmd response\n");
 663
 664         return;
 665 }
 666
 667 /**
 668  *  @brief This function reads of the packet into the upload buff,
 669  *  wake up the main thread and initialise the Rx callack.
 670  *
 671  *  @param urb          pointer to struct urb
 672  *  @return             N/A
 673  */
 674 static void if_usb_receive(struct urb *urb)
 675 {
 676         struct read_cb_info *rinfo = (struct read_cb_info *)urb->context;
 677         struct sk_buff *skb = rinfo->skb;
 678         struct usb_card_rec *cardp = (struct usb_card_rec *) rinfo->cardp;
 679         struct lbs_private *priv = cardp->priv;
 680
 681         int recvlength = urb->actual_length;
 682         u8 *recvbuff = NULL;
 683         u32 recvtype = 0;
 684
 685         lbs_deb_enter(LBS_DEB_USB);
 686
 687         if (recvlength) {
 688                 __le32 tmp;
 689
 690                 if (urb->status) {
 691                         lbs_deb_usbd(&cardp->udev->dev,
 692                                     "URB status is failed\n");
 693                         kfree_skb(skb);
 694                         goto setup_for_next;
 695                 }
 696
 697                 recvbuff = skb->data + IPFIELD_ALIGN_OFFSET;
 698                 memcpy(&tmp, recvbuff, sizeof(u32));
 699                 recvtype = le32_to_cpu(tmp);
 700                 lbs_deb_usbd(&cardp->udev->dev,
 701                             "Recv length = 0x%x, Recv type = 0x%X\n",
 702                             recvlength, recvtype);
 703         } else if (urb->status) {
 704                 kfree_skb(skb);
 705                 goto rx_exit;
 706         }
 707
 708         switch (recvtype) {
 709         case CMD_TYPE_DATA:
 710                 process_cmdtypedata(recvlength, skb, cardp, priv);
 711                 break;
 712
 713         case CMD_TYPE_REQUEST:
 714                 process_cmdrequest(recvlength, recvbuff, skb, cardp, priv);
 715                 break;
 716
 717         case CMD_TYPE_INDICATION:
 718                 /* Event cause handling */
 719                 spin_lock(&priv->driver_lock);
 720                 cardp->usb_event_cause = le32_to_cpu(*(__le32 *) (recvbuff + MESSAGE_HEADER_LEN));
 721                 lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
 722                             cardp->usb_event_cause);
 723                 if (cardp->usb_event_cause & 0xffff0000) {
 724                         lbs_send_tx_feedback(priv);
 725                         spin_unlock(&priv->driver_lock);
 726                         break;
 727                 }
 728                 cardp->usb_event_cause <<= 3;
 729                 cardp->usb_int_cause |= MRVDRV_CARDEVENT;
 730                 kfree_skb(skb);
 731                 lbs_interrupt(priv);
 732                 spin_unlock(&priv->driver_lock);
 733                 goto rx_exit;
 734         default:
 735                 lbs_deb_usbd(&cardp->udev->dev, "Unknown command type 0x%X\n",
 736                              recvtype);
 737                 kfree_skb(skb);
 738                 break;
 739         }
 740
 741 setup_for_next:
 742         if_usb_submit_rx_urb(cardp);
 743 rx_exit:
 744         lbs_deb_leave(LBS_DEB_USB);
 745 }
 746
 747 /**
 748  *  @brief This function downloads data to FW
 749  *  @param priv         pointer to struct lbs_private structure
 750  *  @param type         type of data
 751  *  @param buf          pointer to data buffer
 752  *  @param len          number of bytes
 753  *  @return             0 or -1
 754  */
 755 static int if_usb_host_to_card(struct lbs_private *priv,
 756         u8 type,
 757         u8 *payload,
 758         u16 nb)
 759 {
 760         struct usb_card_rec *cardp = (struct usb_card_rec *)priv->card;
 761
 762         lbs_deb_usbd(&cardp->udev->dev,"*** type = %u\n", type);
 763         lbs_deb_usbd(&cardp->udev->dev,"size after = %d\n", nb);
 764
 765         if (type == MVMS_CMD) {
 766                 __le32 tmp = cpu_to_le32(CMD_TYPE_REQUEST);
 767                 priv->dnld_sent = DNLD_CMD_SENT;
 768                 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
 769                        MESSAGE_HEADER_LEN);
 770
 771         } else {
 772                 __le32 tmp = cpu_to_le32(CMD_TYPE_DATA);
 773                 priv->dnld_sent = DNLD_DATA_SENT;
 774                 memcpy(cardp->bulk_out_buffer, (u8 *) & tmp,
 775                        MESSAGE_HEADER_LEN);
 776         }
 777
 778         memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb);
 779
 780         return usb_tx_block(cardp, cardp->bulk_out_buffer,
 781                             nb + MESSAGE_HEADER_LEN);
 782 }
 783
 784 /* called with priv->driver_lock held */
 785 static int if_usb_get_int_status(struct lbs_private *priv, u8 *ireg)
 786 {
 787         struct usb_card_rec *cardp = priv->card;
 788
 789         *ireg = cardp->usb_int_cause;
 790         cardp->usb_int_cause = 0;
 791
 792         lbs_deb_usbd(&cardp->udev->dev,"Int cause is 0x%X\n", *ireg);
 793
 794         return 0;
 795 }
 796
 797 static int if_usb_read_event_cause(struct lbs_private *priv)
 798 {
 799         struct usb_card_rec *cardp = priv->card;
 800
 801         priv->eventcause = cardp->usb_event_cause;
 802         /* Re-submit rx urb here to avoid event lost issue */
 803         if_usb_submit_rx_urb(cardp);
 804         return 0;
 805 }
 806
 807 /**
 808  *  @brief This function issues Boot command to the Boot2 code
 809  *  @param ivalue   1:Boot from FW by USB-Download
 810  *                  2:Boot from FW in EEPROM
 811  *  @return             0
 812  */
 813 static int if_usb_issue_boot_command(struct usb_card_rec *cardp, int ivalue)
 814 {
 815         struct bootcmdstr sbootcmd;
 816         int i;
 817
 818         /* Prepare command */
 819         sbootcmd.u32magicnumber = cpu_to_le32(BOOT_CMD_MAGIC_NUMBER);
 820         sbootcmd.u8cmd_tag = ivalue;
 821         for (i=0; i<11; i++)
 822                 sbootcmd.au8dumy[i]=0x00;
 823         memcpy(cardp->bulk_out_buffer, &sbootcmd, sizeof(struct bootcmdstr));
 824
 825         /* Issue command */
 826         usb_tx_block(cardp, cardp->bulk_out_buffer, sizeof(struct bootcmdstr));
 827
 828         return 0;
 829 }
 830
 831
 832 /**
 833  *  @brief This function checks the validity of Boot2/FW image.
 834  *
 835  *  @param data              pointer to image
 836  *         len               image length
 837  *  @return     0 or -1
 838  */
 839 static int check_fwfile_format(u8 *data, u32 totlen)
 840 {
 841         u32 bincmd, exit;
 842         u32 blksize, offset, len;
 843         int ret;
 844
 845         ret = 1;
 846         exit = len = 0;
 847
 848         do {
 849                 struct fwheader *fwh = (void *)data;
 850
 851                 bincmd = le32_to_cpu(fwh->dnldcmd);
 852                 blksize = le32_to_cpu(fwh->datalength);
 853                 switch (bincmd) {
 854                 case FW_HAS_DATA_TO_RECV:
 855                         offset = sizeof(struct fwheader) + blksize;
 856                         data += offset;
 857                         len += offset;
 858                         if (len >= totlen)
 859                                 exit = 1;
 860                         break;
 861                 case FW_HAS_LAST_BLOCK:
 862                         exit = 1;
 863                         ret = 0;
 864                         break;
 865                 default:
 866                         exit = 1;
 867                         break;
 868                 }
 869         } while (!exit);
 870
 871         if (ret)
 872                 lbs_pr_err("firmware file format check FAIL\n");
 873         else
 874                 lbs_deb_fw("firmware file format check PASS\n");
 875
 876         return ret;
 877 }
 878
 879
 880 static int if_usb_prog_firmware(struct usb_card_rec *cardp)
 881 {
 882         int i = 0;
 883         static int reset_count = 10;
 884         int ret = 0;
 885
 886         lbs_deb_enter(LBS_DEB_USB);
 887
 888         if ((ret = request_firmware(&cardp->fw, lbs_fw_name,
 889                                     &cardp->udev->dev)) < 0) {
 890                 lbs_pr_err("request_firmware() failed with %#x\n", ret);
 891                 lbs_pr_err("firmware %s not found\n", lbs_fw_name);
 892                 goto done;
 893         }
 894
 895         if (check_fwfile_format(cardp->fw->data, cardp->fw->size))
 896                 goto release_fw;
 897
 898 restart:
 899         if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
 900                 lbs_deb_usbd(&cardp->udev->dev, "URB submission is failed\n");
 901                 ret = -1;
 902                 goto release_fw;
 903         }
 904
 905         cardp->bootcmdresp = 0;
 906         do {
 907                 int j = 0;
 908                 i++;
 909                 /* Issue Boot command = 1, Boot from Download-FW */
 910                 if_usb_issue_boot_command(cardp, BOOT_CMD_FW_BY_USB);
 911                 /* wait for command response */
 912                 do {
 913                         j++;
 914                         msleep_interruptible(100);
 915                 } while (cardp->bootcmdresp == 0 && j < 10);
 916         } while (cardp->bootcmdresp == 0 && i < 5);
 917
 918         if (cardp->bootcmdresp <= 0) {
 919                 if (--reset_count >= 0) {
 920                         if_usb_reset_device(cardp);
 921                         goto restart;
 922                 }
 923                 return -1;
 924         }
 925
 926         i = 0;
 927
 928         cardp->totalbytes = 0;
 929         cardp->fwlastblksent = 0;
 930         cardp->CRC_OK = 1;
 931         cardp->fwdnldover = 0;
 932         cardp->fwseqnum = -1;
 933         cardp->totalbytes = 0;
 934         cardp->fwfinalblk = 0;
 935
 936         /* Send the first firmware packet... */
 937         if_usb_send_fw_pkt(cardp);
 938
 939         /* ... and wait for the process to complete */
 940         wait_event_interruptible(cardp->fw_wq, cardp->surprise_removed || cardp->fwdnldover);
 941
 942         del_timer_sync(&cardp->fw_timeout);
 943         usb_kill_urb(cardp->rx_urb);
 944
 945         if (!cardp->fwdnldover) {
 946                 lbs_pr_info("failed to load fw, resetting device!\n");
 947                 if (--reset_count >= 0) {
 948                         if_usb_reset_device(cardp);
 949                         goto restart;
 950                 }
 951
 952                 lbs_pr_info("FW download failure, time = %d ms\n", i * 100);
 953                 ret = -1;
 954                 goto release_fw;
 955         }
 956
 957 release_fw:
 958         release_firmware(cardp->fw);
 959         cardp->fw = NULL;
 960
 961 done:
 962         lbs_deb_leave_args(LBS_DEB_USB, "ret %d", ret);
 963         return ret;
 964 }
 965
 966
 967 #ifdef CONFIG_PM
 968 static int if_usb_suspend(struct usb_interface *intf, pm_message_t message)
 969 {
 970         struct usb_card_rec *cardp = usb_get_intfdata(intf);
 971         struct lbs_private *priv = cardp->priv;
 972
 973         lbs_deb_enter(LBS_DEB_USB);
 974
 975         if (priv->psstate != PS_STATE_FULL_POWER)
 976                 return -1;
 977
 978         netif_device_detach(priv->dev);
 979         netif_device_detach(priv->mesh_dev);
 980
 981         /* Unlink tx & rx urb */
 982         usb_kill_urb(cardp->tx_urb);
 983         usb_kill_urb(cardp->rx_urb);
 984
 985         lbs_deb_leave(LBS_DEB_USB);
 986         return 0;
 987 }
 988
 989 static int if_usb_resume(struct usb_interface *intf)
 990 {
 991         struct usb_card_rec *cardp = usb_get_intfdata(intf);
 992         struct lbs_private *priv = cardp->priv;
 993
 994         lbs_deb_enter(LBS_DEB_USB);
 995
 996         if_usb_submit_rx_urb(cardp);
 997
 998         netif_device_attach(priv->dev);
 999         netif_device_attach(priv->mesh_dev);
1000
1001         lbs_deb_leave(LBS_DEB_USB);
1002         return 0;
1003 }
1004 #else
1005 #define if_usb_suspend NULL
1006 #define if_usb_resume NULL
1007 #endif
1008
1009 static struct usb_driver if_usb_driver = {
1010         .name = DRV_NAME,
1011         .probe = if_usb_probe,
1012         .disconnect = if_usb_disconnect,
1013         .id_table = if_usb_table,
1014         .suspend = if_usb_suspend,
1015         .resume = if_usb_resume,
1016 };
1017
1018 static int __init if_usb_init_module(void)
1019 {
1020         int ret = 0;
1021
1022         lbs_deb_enter(LBS_DEB_MAIN);
1023
1024         ret = usb_register(&if_usb_driver);
1025
1026         lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1027         return ret;
1028 }
1029
1030 static void __exit if_usb_exit_module(void)
1031 {
1032         lbs_deb_enter(LBS_DEB_MAIN);
1033
1034         usb_deregister(&if_usb_driver);
1035
1036         lbs_deb_leave(LBS_DEB_MAIN);
1037 }
1038
1039 module_init(if_usb_init_module);
1040 module_exit(if_usb_exit_module);
1041
1042 MODULE_DESCRIPTION("8388 USB WLAN Driver");
1043 MODULE_AUTHOR("Marvell International Ltd.");
1044 MODULE_LICENSE("GPL");