drivers/bluetooth/btmrvl_main.c

   1 /**
   2  * Marvell Bluetooth driver
   3  *
   4  * Copyright (C) 2009, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  *
  15  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  18  * this warranty disclaimer.
  19  **/
  20
  21 #include <linux/module.h>
  22
  23 #include <net/bluetooth/bluetooth.h>
  24 #include <net/bluetooth/hci_core.h>
  25
  26 #include "btmrvl_drv.h"
  27
  28 #define VERSION "1.0"
  29
  30 /*
  31  * This function is called by interface specific interrupt handler.
  32  * It updates Power Save & Host Sleep states, and wakes up the main
  33  * thread.
  34  */
  35 void btmrvl_interrupt(struct btmrvl_private *priv)
  36 {
  37         priv->adapter->ps_state = PS_AWAKE;
  38
  39         priv->adapter->wakeup_tries = 0;
  40
  41         priv->adapter->int_count++;
  42
  43         wake_up_interruptible(&priv->main_thread.wait_q);
  44 }
  45 EXPORT_SYMBOL_GPL(btmrvl_interrupt);
  46
  47 bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
  48 {
  49         struct hci_event_hdr *hdr = (void *) skb->data;
  50
  51         if (hdr->evt == HCI_EV_CMD_COMPLETE) {
  52                 struct hci_ev_cmd_complete *ec;
  53                 u16 opcode, ocf, ogf;
  54
  55                 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
  56                 opcode = __le16_to_cpu(ec->opcode);
  57                 ocf = hci_opcode_ocf(opcode);
  58                 ogf = hci_opcode_ogf(opcode);
  59
  60                 if (priv->btmrvl_dev.sendcmdflag) {
  61                         priv->btmrvl_dev.sendcmdflag = false;
  62                         priv->adapter->cmd_complete = true;
  63                         wake_up_interruptible(&priv->adapter->cmd_wait_q);
  64                 }
  65
  66                 if (ogf == OGF) {
  67                         BT_DBG("vendor event skipped: ogf 0x%4.4x ocf 0x%4.4x",
  68                                ogf, ocf);
  69                         kfree_skb(skb);
  70                         return false;
  71                 }
  72         }
  73
  74         return true;
  75 }
  76 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
  77
  78 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
  79 {
  80         struct btmrvl_adapter *adapter = priv->adapter;
  81         struct btmrvl_event *event;
  82         int ret = 0;
  83
  84         event = (struct btmrvl_event *) skb->data;
  85         if (event->ec != 0xff) {
  86                 BT_DBG("Not Marvell Event=%x", event->ec);
  87                 ret = -EINVAL;
  88                 goto exit;
  89         }
  90
  91         switch (event->data[0]) {
  92         case BT_CMD_AUTO_SLEEP_MODE:
  93                 if (!event->data[2]) {
  94                         if (event->data[1] == BT_PS_ENABLE)
  95                                 adapter->psmode = 1;
  96                         else
  97                                 adapter->psmode = 0;
  98                         BT_DBG("PS Mode:%s",
  99                                 (adapter->psmode) ? "Enable" : "Disable");
 100                 } else {
 101                         BT_DBG("PS Mode command failed");
 102                 }
 103                 break;
 104
 105         case BT_CMD_HOST_SLEEP_CONFIG:
 106                 if (!event->data[3])
 107                         BT_DBG("gpio=%x, gap=%x", event->data[1],
 108                                                         event->data[2]);
 109                 else
 110                         BT_DBG("HSCFG command failed");
 111                 break;
 112
 113         case BT_CMD_HOST_SLEEP_ENABLE:
 114                 if (!event->data[1]) {
 115                         adapter->hs_state = HS_ACTIVATED;
 116                         if (adapter->psmode)
 117                                 adapter->ps_state = PS_SLEEP;
 118                         BT_DBG("HS ACTIVATED!");
 119                 } else {
 120                         BT_DBG("HS Enable failed");
 121                 }
 122                 break;
 123
 124         case BT_CMD_MODULE_CFG_REQ:
 125                 if (priv->btmrvl_dev.sendcmdflag &&
 126                                 event->data[1] == MODULE_BRINGUP_REQ) {
 127                         BT_DBG("EVENT:%s",
 128                                 ((event->data[2] == MODULE_BROUGHT_UP) ||
 129                                 (event->data[2] == MODULE_ALREADY_UP)) ?
 130                                 "Bring-up succeed" : "Bring-up failed");
 131
 132                         if (event->length > 3 && event->data[3])
 133                                 priv->btmrvl_dev.dev_type = HCI_AMP;
 134                         else
 135                                 priv->btmrvl_dev.dev_type = HCI_BREDR;
 136
 137                         BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
 138                 } else if (priv->btmrvl_dev.sendcmdflag &&
 139                                 event->data[1] == MODULE_SHUTDOWN_REQ) {
 140                         BT_DBG("EVENT:%s", (event->data[2]) ?
 141                                 "Shutdown failed" : "Shutdown succeed");
 142                 } else {
 143                         BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
 144                         ret = -EINVAL;
 145                 }
 146                 break;
 147
 148         case BT_EVENT_POWER_STATE:
 149                 if (event->data[1] == BT_PS_SLEEP)
 150                         adapter->ps_state = PS_SLEEP;
 151                 BT_DBG("EVENT:%s",
 152                         (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
 153                 break;
 154
 155         default:
 156                 BT_DBG("Unknown Event=%d", event->data[0]);
 157                 ret = -EINVAL;
 158                 break;
 159         }
 160
 161 exit:
 162         if (!ret)
 163                 kfree_skb(skb);
 164
 165         return ret;
 166 }
 167 EXPORT_SYMBOL_GPL(btmrvl_process_event);
 168
 169 static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 cmd_no,
 170                                 const void *param, u8 len)
 171 {
 172         struct sk_buff *skb;
 173         struct hci_command_hdr *hdr;
 174
 175         skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
 176         if (skb == NULL) {
 177                 BT_ERR("No free skb");
 178                 return -ENOMEM;
 179         }
 180
 181         hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
 182         hdr->opcode = cpu_to_le16(hci_opcode_pack(OGF, cmd_no));
 183         hdr->plen = len;
 184
 185         if (len)
 186                 memcpy(skb_put(skb, len), param, len);
 187
 188         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 189
 190         skb->dev = (void *) priv->btmrvl_dev.hcidev;
 191         skb_queue_head(&priv->adapter->tx_queue, skb);
 192
 193         priv->btmrvl_dev.sendcmdflag = true;
 194
 195         priv->adapter->cmd_complete = false;
 196
 197         wake_up_interruptible(&priv->main_thread.wait_q);
 198
 199         if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 200                                 priv->adapter->cmd_complete,
 201                                 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP)))
 202                 return -ETIMEDOUT;
 203
 204         return 0;
 205 }
 206
 207 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
 208 {
 209         int ret;
 210
 211         ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
 212         if (ret)
 213                 BT_ERR("module_cfg_cmd(%x) failed\n", subcmd);
 214
 215         return ret;
 216 }
 217 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
 218
 219 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
 220 {
 221         int ret;
 222         u8 param[2];
 223
 224         param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
 225         param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
 226
 227         BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
 228                param[0], param[1]);
 229
 230         ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
 231         if (ret)
 232                 BT_ERR("HSCFG command failed\n");
 233
 234         return ret;
 235 }
 236 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
 237
 238 int btmrvl_enable_ps(struct btmrvl_private *priv)
 239 {
 240         int ret;
 241         u8 param;
 242
 243         if (priv->btmrvl_dev.psmode)
 244                 param = BT_PS_ENABLE;
 245         else
 246                 param = BT_PS_DISABLE;
 247
 248         ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, &param, 1);
 249         if (ret)
 250                 BT_ERR("PSMODE command failed\n");
 251
 252         return 0;
 253 }
 254 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
 255
 256 int btmrvl_enable_hs(struct btmrvl_private *priv)
 257 {
 258         int ret;
 259
 260         ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
 261         if (ret)
 262                 BT_ERR("Host sleep enable command failed\n");
 263
 264         return ret;
 265 }
 266 EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
 267
 268 int btmrvl_prepare_command(struct btmrvl_private *priv)
 269 {
 270         int ret = 0;
 271
 272         if (priv->btmrvl_dev.hscfgcmd) {
 273                 priv->btmrvl_dev.hscfgcmd = 0;
 274                 btmrvl_send_hscfg_cmd(priv);
 275         }
 276
 277         if (priv->btmrvl_dev.pscmd) {
 278                 priv->btmrvl_dev.pscmd = 0;
 279                 btmrvl_enable_ps(priv);
 280         }
 281
 282         if (priv->btmrvl_dev.hscmd) {
 283                 priv->btmrvl_dev.hscmd = 0;
 284
 285                 if (priv->btmrvl_dev.hsmode) {
 286                         ret = btmrvl_enable_hs(priv);
 287                 } else {
 288                         ret = priv->hw_wakeup_firmware(priv);
 289                         priv->adapter->hs_state = HS_DEACTIVATED;
 290                 }
 291         }
 292
 293         return ret;
 294 }
 295
 296 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
 297 {
 298         int ret = 0;
 299
 300         if (!skb || !skb->data)
 301                 return -EINVAL;
 302
 303         if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
 304                 BT_ERR("Tx Error: Bad skb length %d : %d",
 305                                                 skb->len, BTM_UPLD_SIZE);
 306                 return -EINVAL;
 307         }
 308
 309         if (skb_headroom(skb) < BTM_HEADER_LEN) {
 310                 struct sk_buff *tmp = skb;
 311
 312                 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
 313                 if (!skb) {
 314                         BT_ERR("Tx Error: realloc_headroom failed %d",
 315                                 BTM_HEADER_LEN);
 316                         skb = tmp;
 317                         return -EINVAL;
 318                 }
 319
 320                 kfree_skb(tmp);
 321         }
 322
 323         skb_push(skb, BTM_HEADER_LEN);
 324
 325         /* header type: byte[3]
 326          * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
 327          * header length: byte[2][1][0]
 328          */
 329
 330         skb->data[0] = (skb->len & 0x0000ff);
 331         skb->data[1] = (skb->len & 0x00ff00) >> 8;
 332         skb->data[2] = (skb->len & 0xff0000) >> 16;
 333         skb->data[3] = bt_cb(skb)->pkt_type;
 334
 335         if (priv->hw_host_to_card)
 336                 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
 337
 338         return ret;
 339 }
 340
 341 static void btmrvl_init_adapter(struct btmrvl_private *priv)
 342 {
 343         skb_queue_head_init(&priv->adapter->tx_queue);
 344
 345         priv->adapter->ps_state = PS_AWAKE;
 346
 347         init_waitqueue_head(&priv->adapter->cmd_wait_q);
 348 }
 349
 350 static void btmrvl_free_adapter(struct btmrvl_private *priv)
 351 {
 352         skb_queue_purge(&priv->adapter->tx_queue);
 353
 354         kfree(priv->adapter);
 355
 356         priv->adapter = NULL;
 357 }
 358
 359 static int btmrvl_ioctl(struct hci_dev *hdev,
 360                                 unsigned int cmd, unsigned long arg)
 361 {
 362         return -ENOIOCTLCMD;
 363 }
 364
 365 static int btmrvl_send_frame(struct sk_buff *skb)
 366 {
 367         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 368         struct btmrvl_private *priv = NULL;
 369
 370         BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
 371
 372         if (!hdev) {
 373                 BT_ERR("Frame for unknown HCI device");
 374                 return -ENODEV;
 375         }
 376
 377         priv = hci_get_drvdata(hdev);
 378
 379         if (!test_bit(HCI_RUNNING, &hdev->flags)) {
 380                 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
 381                 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
 382                                                         skb->data, skb->len);
 383                 return -EBUSY;
 384         }
 385
 386         switch (bt_cb(skb)->pkt_type) {
 387         case HCI_COMMAND_PKT:
 388                 hdev->stat.cmd_tx++;
 389                 break;
 390
 391         case HCI_ACLDATA_PKT:
 392                 hdev->stat.acl_tx++;
 393                 break;
 394
 395         case HCI_SCODATA_PKT:
 396                 hdev->stat.sco_tx++;
 397                 break;
 398         }
 399
 400         skb_queue_tail(&priv->adapter->tx_queue, skb);
 401
 402         wake_up_interruptible(&priv->main_thread.wait_q);
 403
 404         return 0;
 405 }
 406
 407 static int btmrvl_flush(struct hci_dev *hdev)
 408 {
 409         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 410
 411         skb_queue_purge(&priv->adapter->tx_queue);
 412
 413         return 0;
 414 }
 415
 416 static int btmrvl_close(struct hci_dev *hdev)
 417 {
 418         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 419
 420         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 421                 return 0;
 422
 423         skb_queue_purge(&priv->adapter->tx_queue);
 424
 425         return 0;
 426 }
 427
 428 static int btmrvl_open(struct hci_dev *hdev)
 429 {
 430         set_bit(HCI_RUNNING, &hdev->flags);
 431
 432         return 0;
 433 }
 434
 435 /*
 436  * This function parses provided calibration data input. It should contain
 437  * hex bytes separated by space or new line character. Here is an example.
 438  * 00 1C 01 37 FF FF FF FF 02 04 7F 01
 439  * CE BA 00 00 00 2D C6 C0 00 00 00 00
 440  * 00 F0 00 00
 441  */
 442 static int btmrvl_parse_cal_cfg(const u8 *src, u32 len, u8 *dst, u32 dst_size)
 443 {
 444         const u8 *s = src;
 445         u8 *d = dst;
 446         int ret;
 447         u8 tmp[3];
 448
 449         tmp[2] = '\0';
 450         while ((s - src) <= len - 2) {
 451                 if (isspace(*s)) {
 452                         s++;
 453                         continue;
 454                 }
 455
 456                 if (isxdigit(*s)) {
 457                         if ((d - dst) >= dst_size) {
 458                                 BT_ERR("calibration data file too big!!!");
 459                                 return -EINVAL;
 460                         }
 461
 462                         memcpy(tmp, s, 2);
 463
 464                         ret = kstrtou8(tmp, 16, d++);
 465                         if (ret < 0)
 466                                 return ret;
 467
 468                         s += 2;
 469                 } else {
 470                         return -EINVAL;
 471                 }
 472         }
 473         if (d == dst)
 474                 return -EINVAL;
 475
 476         return 0;
 477 }
 478
 479 static int btmrvl_load_cal_data(struct btmrvl_private *priv,
 480                                 u8 *config_data)
 481 {
 482         int i, ret;
 483         u8 data[BT_CMD_DATA_SIZE];
 484
 485         data[0] = 0x00;
 486         data[1] = 0x00;
 487         data[2] = 0x00;
 488         data[3] = BT_CMD_DATA_SIZE - 4;
 489
 490         /* Swap cal-data bytes. Each four bytes are swapped. Considering 4
 491          * byte SDIO header offset, mapping of input and output bytes will be
 492          * {3, 2, 1, 0} -> {0+4, 1+4, 2+4, 3+4},
 493          * {7, 6, 5, 4} -> {4+4, 5+4, 6+4, 7+4} */
 494         for (i = 4; i < BT_CMD_DATA_SIZE; i++)
 495                 data[i] = config_data[(i / 4) * 8 - 1 - i];
 496
 497         print_hex_dump_bytes("Calibration data: ",
 498                              DUMP_PREFIX_OFFSET, data, BT_CMD_DATA_SIZE);
 499
 500         ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
 501                                    BT_CMD_DATA_SIZE);
 502         if (ret)
 503                 BT_ERR("Failed to download caibration data\n");
 504
 505         return 0;
 506 }
 507
 508 static int
 509 btmrvl_process_cal_cfg(struct btmrvl_private *priv, u8 *data, u32 size)
 510 {
 511         u8 cal_data[BT_CAL_DATA_SIZE];
 512         int ret;
 513
 514         ret = btmrvl_parse_cal_cfg(data, size, cal_data, sizeof(cal_data));
 515         if (ret)
 516                 return ret;
 517
 518         ret = btmrvl_load_cal_data(priv, cal_data);
 519         if (ret) {
 520                 BT_ERR("Fail to load calibrate data");
 521                 return ret;
 522         }
 523
 524         return 0;
 525 }
 526
 527 static int btmrvl_cal_data_config(struct btmrvl_private *priv)
 528 {
 529         const struct firmware *cfg;
 530         int ret;
 531         const char *cal_data = priv->btmrvl_dev.cal_data;
 532
 533         if (!cal_data)
 534                 return 0;
 535
 536         ret = request_firmware(&cfg, cal_data, priv->btmrvl_dev.dev);
 537         if (ret < 0) {
 538                 BT_DBG("Failed to get %s file, skipping cal data download",
 539                        cal_data);
 540                 return 0;
 541         }
 542
 543         ret = btmrvl_process_cal_cfg(priv, (u8 *)cfg->data, cfg->size);
 544         release_firmware(cfg);
 545         return ret;
 546 }
 547
 548 static int btmrvl_setup(struct hci_dev *hdev)
 549 {
 550         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 551
 552         btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
 553
 554         if (btmrvl_cal_data_config(priv))
 555                 BT_ERR("Set cal data failed");
 556
 557         priv->btmrvl_dev.psmode = 1;
 558         btmrvl_enable_ps(priv);
 559
 560         priv->btmrvl_dev.gpio_gap = 0xffff;
 561         btmrvl_send_hscfg_cmd(priv);
 562
 563         return 0;
 564 }
 565
 566 /*
 567  * This function handles the event generated by firmware, rx data
 568  * received from firmware, and tx data sent from kernel.
 569  */
 570 static int btmrvl_service_main_thread(void *data)
 571 {
 572         struct btmrvl_thread *thread = data;
 573         struct btmrvl_private *priv = thread->priv;
 574         struct btmrvl_adapter *adapter = priv->adapter;
 575         wait_queue_t wait;
 576         struct sk_buff *skb;
 577         ulong flags;
 578
 579         init_waitqueue_entry(&wait, current);
 580
 581         for (;;) {
 582                 add_wait_queue(&thread->wait_q, &wait);
 583
 584                 set_current_state(TASK_INTERRUPTIBLE);
 585                 if (kthread_should_stop()) {
 586                         BT_DBG("main_thread: break from main thread");
 587                         break;
 588                 }
 589
 590                 if (adapter->wakeup_tries ||
 591                                 ((!adapter->int_count) &&
 592                                 (!priv->btmrvl_dev.tx_dnld_rdy ||
 593                                 skb_queue_empty(&adapter->tx_queue)))) {
 594                         BT_DBG("main_thread is sleeping...");
 595                         schedule();
 596                 }
 597
 598                 set_current_state(TASK_RUNNING);
 599
 600                 remove_wait_queue(&thread->wait_q, &wait);
 601
 602                 BT_DBG("main_thread woke up");
 603
 604                 spin_lock_irqsave(&priv->driver_lock, flags);
 605                 if (adapter->int_count) {
 606                         adapter->int_count = 0;
 607                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 608                         priv->hw_process_int_status(priv);
 609                 } else if (adapter->ps_state == PS_SLEEP &&
 610                                         !skb_queue_empty(&adapter->tx_queue)) {
 611                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 612                         adapter->wakeup_tries++;
 613                         priv->hw_wakeup_firmware(priv);
 614                         continue;
 615                 } else {
 616                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 617                 }
 618
 619                 if (adapter->ps_state == PS_SLEEP)
 620                         continue;
 621
 622                 if (!priv->btmrvl_dev.tx_dnld_rdy)
 623                         continue;
 624
 625                 skb = skb_dequeue(&adapter->tx_queue);
 626                 if (skb) {
 627                         if (btmrvl_tx_pkt(priv, skb))
 628                                 priv->btmrvl_dev.hcidev->stat.err_tx++;
 629                         else
 630                                 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
 631
 632                         kfree_skb(skb);
 633                 }
 634         }
 635
 636         return 0;
 637 }
 638
 639 int btmrvl_register_hdev(struct btmrvl_private *priv)
 640 {
 641         struct hci_dev *hdev = NULL;
 642         int ret;
 643
 644         hdev = hci_alloc_dev();
 645         if (!hdev) {
 646                 BT_ERR("Can not allocate HCI device");
 647                 goto err_hdev;
 648         }
 649
 650         priv->btmrvl_dev.hcidev = hdev;
 651         hci_set_drvdata(hdev, priv);
 652
 653         hdev->bus = HCI_SDIO;
 654         hdev->open = btmrvl_open;
 655         hdev->close = btmrvl_close;
 656         hdev->flush = btmrvl_flush;
 657         hdev->send = btmrvl_send_frame;
 658         hdev->ioctl = btmrvl_ioctl;
 659         hdev->setup = btmrvl_setup;
 660
 661         hdev->dev_type = priv->btmrvl_dev.dev_type;
 662
 663         ret = hci_register_dev(hdev);
 664         if (ret < 0) {
 665                 BT_ERR("Can not register HCI device");
 666                 goto err_hci_register_dev;
 667         }
 668
 669 #ifdef CONFIG_DEBUG_FS
 670         btmrvl_debugfs_init(hdev);
 671 #endif
 672
 673         return 0;
 674
 675 err_hci_register_dev:
 676         hci_free_dev(hdev);
 677
 678 err_hdev:
 679         /* Stop the thread servicing the interrupts */
 680         kthread_stop(priv->main_thread.task);
 681
 682         btmrvl_free_adapter(priv);
 683         kfree(priv);
 684
 685         return -ENOMEM;
 686 }
 687 EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
 688
 689 struct btmrvl_private *btmrvl_add_card(void *card)
 690 {
 691         struct btmrvl_private *priv;
 692
 693         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 694         if (!priv) {
 695                 BT_ERR("Can not allocate priv");
 696                 goto err_priv;
 697         }
 698
 699         priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
 700         if (!priv->adapter) {
 701                 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
 702                 goto err_adapter;
 703         }
 704
 705         btmrvl_init_adapter(priv);
 706
 707         BT_DBG("Starting kthread...");
 708         priv->main_thread.priv = priv;
 709         spin_lock_init(&priv->driver_lock);
 710
 711         init_waitqueue_head(&priv->main_thread.wait_q);
 712         priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
 713                                 &priv->main_thread, "btmrvl_main_service");
 714
 715         priv->btmrvl_dev.card = card;
 716         priv->btmrvl_dev.tx_dnld_rdy = true;
 717
 718         return priv;
 719
 720 err_adapter:
 721         kfree(priv);
 722
 723 err_priv:
 724         return NULL;
 725 }
 726 EXPORT_SYMBOL_GPL(btmrvl_add_card);
 727
 728 int btmrvl_remove_card(struct btmrvl_private *priv)
 729 {
 730         struct hci_dev *hdev;
 731
 732         hdev = priv->btmrvl_dev.hcidev;
 733
 734         wake_up_interruptible(&priv->adapter->cmd_wait_q);
 735
 736         kthread_stop(priv->main_thread.task);
 737
 738 #ifdef CONFIG_DEBUG_FS
 739         btmrvl_debugfs_remove(hdev);
 740 #endif
 741
 742         hci_unregister_dev(hdev);
 743
 744         hci_free_dev(hdev);
 745
 746         priv->btmrvl_dev.hcidev = NULL;
 747
 748         btmrvl_free_adapter(priv);
 749
 750         kfree(priv);
 751
 752         return 0;
 753 }
 754 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
 755
 756 MODULE_AUTHOR("Marvell International Ltd.");
 757 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
 758 MODULE_VERSION(VERSION);
 759 MODULE_LICENSE("GPL v2");