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 #include <linux/of.h>
  23 #include <net/bluetooth/bluetooth.h>
  24 #include <net/bluetooth/hci_core.h>
  25
  26 #include "btmrvl_drv.h"
  27 #include "btmrvl_sdio.h"
  28
  29 #define VERSION "1.0"
  30
  31 /*
  32  * This function is called by interface specific interrupt handler.
  33  * It updates Power Save & Host Sleep states, and wakes up the main
  34  * thread.
  35  */
  36 void btmrvl_interrupt(struct btmrvl_private *priv)
  37 {
  38         priv->adapter->ps_state = PS_AWAKE;
  39
  40         priv->adapter->wakeup_tries = 0;
  41
  42         priv->adapter->int_count++;
  43
  44         wake_up_interruptible(&priv->main_thread.wait_q);
  45 }
  46 EXPORT_SYMBOL_GPL(btmrvl_interrupt);
  47
  48 bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
  49 {
  50         struct hci_event_hdr *hdr = (void *) skb->data;
  51
  52         if (hdr->evt == HCI_EV_CMD_COMPLETE) {
  53                 struct hci_ev_cmd_complete *ec;
  54                 u16 opcode;
  55
  56                 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
  57                 opcode = __le16_to_cpu(ec->opcode);
  58
  59                 if (priv->btmrvl_dev.sendcmdflag) {
  60                         priv->btmrvl_dev.sendcmdflag = false;
  61                         priv->adapter->cmd_complete = true;
  62                         wake_up_interruptible(&priv->adapter->cmd_wait_q);
  63
  64                         if (hci_opcode_ogf(opcode) == 0x3F) {
  65                                 BT_DBG("vendor event skipped: opcode=%#4.4x",
  66                                        opcode);
  67                                 kfree_skb(skb);
  68                                 return false;
  69                         }
  70                 }
  71         }
  72
  73         return true;
  74 }
  75 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
  76
  77 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
  78 {
  79         struct btmrvl_adapter *adapter = priv->adapter;
  80         struct btmrvl_event *event;
  81         int ret = 0;
  82
  83         event = (struct btmrvl_event *) skb->data;
  84         if (event->ec != 0xff) {
  85                 BT_DBG("Not Marvell Event=%x", event->ec);
  86                 ret = -EINVAL;
  87                 goto exit;
  88         }
  89
  90         switch (event->data[0]) {
  91         case BT_EVENT_AUTO_SLEEP_MODE:
  92                 if (!event->data[2]) {
  93                         if (event->data[1] == BT_PS_ENABLE)
  94                                 adapter->psmode = 1;
  95                         else
  96                                 adapter->psmode = 0;
  97                         BT_DBG("PS Mode:%s",
  98                                 (adapter->psmode) ? "Enable" : "Disable");
  99                 } else {
 100                         BT_DBG("PS Mode command failed");
 101                 }
 102                 break;
 103
 104         case BT_EVENT_HOST_SLEEP_CONFIG:
 105                 if (!event->data[3])
 106                         BT_DBG("gpio=%x, gap=%x", event->data[1],
 107                                                         event->data[2]);
 108                 else
 109                         BT_DBG("HSCFG command failed");
 110                 break;
 111
 112         case BT_EVENT_HOST_SLEEP_ENABLE:
 113                 if (!event->data[1]) {
 114                         adapter->hs_state = HS_ACTIVATED;
 115                         if (adapter->psmode)
 116                                 adapter->ps_state = PS_SLEEP;
 117                         wake_up_interruptible(&adapter->event_hs_wait_q);
 118                         BT_DBG("HS ACTIVATED!");
 119                 } else {
 120                         BT_DBG("HS Enable failed");
 121                 }
 122                 break;
 123
 124         case BT_EVENT_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 opcode,
 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(opcode);
 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_queue_head(&priv->adapter->tx_queue, skb);
 191
 192         priv->btmrvl_dev.sendcmdflag = true;
 193
 194         priv->adapter->cmd_complete = false;
 195
 196         wake_up_interruptible(&priv->main_thread.wait_q);
 197
 198         if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 199                                 priv->adapter->cmd_complete,
 200                                 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP)))
 201                 return -ETIMEDOUT;
 202
 203         return 0;
 204 }
 205
 206 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd)
 207 {
 208         int ret;
 209
 210         ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
 211         if (ret)
 212                 BT_ERR("module_cfg_cmd(%x) failed\n", subcmd);
 213
 214         return ret;
 215 }
 216 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
 217
 218 int btmrvl_pscan_window_reporting(struct btmrvl_private *priv, u8 subcmd)
 219 {
 220         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
 221         int ret;
 222
 223         if (!card->support_pscan_win_report)
 224                 return 0;
 225
 226         ret = btmrvl_send_sync_cmd(priv, BT_CMD_PSCAN_WIN_REPORT_ENABLE,
 227                                    &subcmd, 1);
 228         if (ret)
 229                 BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret);
 230
 231         return ret;
 232 }
 233 EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting);
 234
 235 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
 236 {
 237         int ret;
 238         u8 param[2];
 239
 240         param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
 241         param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
 242
 243         BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
 244                param[0], param[1]);
 245
 246         ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
 247         if (ret)
 248                 BT_ERR("HSCFG command failed\n");
 249
 250         return ret;
 251 }
 252 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
 253
 254 int btmrvl_enable_ps(struct btmrvl_private *priv)
 255 {
 256         int ret;
 257         u8 param;
 258
 259         if (priv->btmrvl_dev.psmode)
 260                 param = BT_PS_ENABLE;
 261         else
 262                 param = BT_PS_DISABLE;
 263
 264         ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, &param, 1);
 265         if (ret)
 266                 BT_ERR("PSMODE command failed\n");
 267
 268         return 0;
 269 }
 270 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
 271
 272 int btmrvl_enable_hs(struct btmrvl_private *priv)
 273 {
 274         struct btmrvl_adapter *adapter = priv->adapter;
 275         int ret;
 276
 277         ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
 278         if (ret) {
 279                 BT_ERR("Host sleep enable command failed\n");
 280                 return ret;
 281         }
 282
 283         ret = wait_event_interruptible_timeout(adapter->event_hs_wait_q,
 284                                                adapter->hs_state,
 285                         msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED));
 286         if (ret < 0) {
 287                 BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d",
 288                        ret, adapter->hs_state, adapter->ps_state,
 289                        adapter->wakeup_tries);
 290         } else if (!ret) {
 291                 BT_ERR("hs_enable timeout: %d,%d,%d", adapter->hs_state,
 292                        adapter->ps_state, adapter->wakeup_tries);
 293                 ret = -ETIMEDOUT;
 294         } else {
 295                 BT_DBG("host sleep enabled: %d,%d,%d", adapter->hs_state,
 296                        adapter->ps_state, adapter->wakeup_tries);
 297                 ret = 0;
 298         }
 299
 300         return ret;
 301 }
 302 EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
 303
 304 int btmrvl_prepare_command(struct btmrvl_private *priv)
 305 {
 306         int ret = 0;
 307
 308         if (priv->btmrvl_dev.hscfgcmd) {
 309                 priv->btmrvl_dev.hscfgcmd = 0;
 310                 btmrvl_send_hscfg_cmd(priv);
 311         }
 312
 313         if (priv->btmrvl_dev.pscmd) {
 314                 priv->btmrvl_dev.pscmd = 0;
 315                 btmrvl_enable_ps(priv);
 316         }
 317
 318         if (priv->btmrvl_dev.hscmd) {
 319                 priv->btmrvl_dev.hscmd = 0;
 320
 321                 if (priv->btmrvl_dev.hsmode) {
 322                         ret = btmrvl_enable_hs(priv);
 323                 } else {
 324                         ret = priv->hw_wakeup_firmware(priv);
 325                         priv->adapter->hs_state = HS_DEACTIVATED;
 326                 }
 327         }
 328
 329         return ret;
 330 }
 331
 332 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
 333 {
 334         int ret = 0;
 335
 336         if (!skb || !skb->data)
 337                 return -EINVAL;
 338
 339         if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
 340                 BT_ERR("Tx Error: Bad skb length %d : %d",
 341                                                 skb->len, BTM_UPLD_SIZE);
 342                 return -EINVAL;
 343         }
 344
 345         if (skb_headroom(skb) < BTM_HEADER_LEN) {
 346                 struct sk_buff *tmp = skb;
 347
 348                 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
 349                 if (!skb) {
 350                         BT_ERR("Tx Error: realloc_headroom failed %d",
 351                                 BTM_HEADER_LEN);
 352                         skb = tmp;
 353                         return -EINVAL;
 354                 }
 355
 356                 kfree_skb(tmp);
 357         }
 358
 359         skb_push(skb, BTM_HEADER_LEN);
 360
 361         /* header type: byte[3]
 362          * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
 363          * header length: byte[2][1][0]
 364          */
 365
 366         skb->data[0] = (skb->len & 0x0000ff);
 367         skb->data[1] = (skb->len & 0x00ff00) >> 8;
 368         skb->data[2] = (skb->len & 0xff0000) >> 16;
 369         skb->data[3] = bt_cb(skb)->pkt_type;
 370
 371         if (priv->hw_host_to_card)
 372                 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
 373
 374         return ret;
 375 }
 376
 377 static void btmrvl_init_adapter(struct btmrvl_private *priv)
 378 {
 379         int buf_size;
 380
 381         skb_queue_head_init(&priv->adapter->tx_queue);
 382
 383         priv->adapter->ps_state = PS_AWAKE;
 384
 385         buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
 386         priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
 387         if (!priv->adapter->hw_regs_buf) {
 388                 priv->adapter->hw_regs = NULL;
 389                 BT_ERR("Unable to allocate buffer for hw_regs.");
 390         } else {
 391                 priv->adapter->hw_regs =
 392                         (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
 393                                          BTSDIO_DMA_ALIGN);
 394                 BT_DBG("hw_regs_buf=%p hw_regs=%p",
 395                        priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
 396         }
 397
 398         init_waitqueue_head(&priv->adapter->cmd_wait_q);
 399         init_waitqueue_head(&priv->adapter->event_hs_wait_q);
 400 }
 401
 402 static void btmrvl_free_adapter(struct btmrvl_private *priv)
 403 {
 404         skb_queue_purge(&priv->adapter->tx_queue);
 405
 406         kfree(priv->adapter->hw_regs_buf);
 407         kfree(priv->adapter);
 408
 409         priv->adapter = NULL;
 410 }
 411
 412 static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 413 {
 414         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 415
 416         BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
 417
 418         if (!test_bit(HCI_RUNNING, &hdev->flags)) {
 419                 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
 420                 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
 421                                                         skb->data, skb->len);
 422                 return -EBUSY;
 423         }
 424
 425         switch (bt_cb(skb)->pkt_type) {
 426         case HCI_COMMAND_PKT:
 427                 hdev->stat.cmd_tx++;
 428                 break;
 429
 430         case HCI_ACLDATA_PKT:
 431                 hdev->stat.acl_tx++;
 432                 break;
 433
 434         case HCI_SCODATA_PKT:
 435                 hdev->stat.sco_tx++;
 436                 break;
 437         }
 438
 439         skb_queue_tail(&priv->adapter->tx_queue, skb);
 440
 441         wake_up_interruptible(&priv->main_thread.wait_q);
 442
 443         return 0;
 444 }
 445
 446 static int btmrvl_flush(struct hci_dev *hdev)
 447 {
 448         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 449
 450         skb_queue_purge(&priv->adapter->tx_queue);
 451
 452         return 0;
 453 }
 454
 455 static int btmrvl_close(struct hci_dev *hdev)
 456 {
 457         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 458
 459         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 460                 return 0;
 461
 462         skb_queue_purge(&priv->adapter->tx_queue);
 463
 464         return 0;
 465 }
 466
 467 static int btmrvl_open(struct hci_dev *hdev)
 468 {
 469         set_bit(HCI_RUNNING, &hdev->flags);
 470
 471         return 0;
 472 }
 473
 474 static int btmrvl_download_cal_data(struct btmrvl_private *priv,
 475                                     u8 *data, int len)
 476 {
 477         int ret;
 478
 479         data[0] = 0x00;
 480         data[1] = 0x00;
 481         data[2] = 0x00;
 482         data[3] = len;
 483
 484         print_hex_dump_bytes("Calibration data: ",
 485                              DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
 486
 487         ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
 488                                    BT_CAL_HDR_LEN + len);
 489         if (ret)
 490                 BT_ERR("Failed to download caibration data\n");
 491
 492         return 0;
 493 }
 494
 495 static int btmrvl_cal_data_dt(struct btmrvl_private *priv)
 496 {
 497         struct device_node *dt_node;
 498         u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
 499         const char name[] = "btmrvl_caldata";
 500         const char property[] = "btmrvl,caldata";
 501         int ret;
 502
 503         dt_node = of_find_node_by_name(NULL, name);
 504         if (!dt_node)
 505                 return -ENODEV;
 506
 507         ret = of_property_read_u8_array(dt_node, property,
 508                                         cal_data + BT_CAL_HDR_LEN,
 509                                         BT_CAL_DATA_SIZE);
 510         if (ret)
 511                 return ret;
 512
 513         BT_DBG("Use cal data from device tree");
 514         ret = btmrvl_download_cal_data(priv, cal_data, BT_CAL_DATA_SIZE);
 515         if (ret) {
 516                 BT_ERR("Fail to download calibrate data");
 517                 return ret;
 518         }
 519
 520         return 0;
 521 }
 522
 523 static int btmrvl_setup(struct hci_dev *hdev)
 524 {
 525         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 526
 527         btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
 528
 529         btmrvl_cal_data_dt(priv);
 530
 531         btmrvl_pscan_window_reporting(priv, 0x01);
 532
 533         priv->btmrvl_dev.psmode = 1;
 534         btmrvl_enable_ps(priv);
 535
 536         priv->btmrvl_dev.gpio_gap = 0xffff;
 537         btmrvl_send_hscfg_cmd(priv);
 538
 539         return 0;
 540 }
 541
 542 static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
 543 {
 544         struct sk_buff *skb;
 545         long ret;
 546         u8 buf[8];
 547
 548         buf[0] = MRVL_VENDOR_PKT;
 549         buf[1] = sizeof(bdaddr_t);
 550         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
 551
 552         skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf,
 553                              HCI_INIT_TIMEOUT);
 554         if (IS_ERR(skb)) {
 555                 ret = PTR_ERR(skb);
 556                 BT_ERR("%s: changing btmrvl device address failed (%ld)",
 557                        hdev->name, ret);
 558                 return ret;
 559         }
 560         kfree_skb(skb);
 561
 562         return 0;
 563 }
 564
 565 /*
 566  * This function handles the event generated by firmware, rx data
 567  * received from firmware, and tx data sent from kernel.
 568  */
 569 static int btmrvl_service_main_thread(void *data)
 570 {
 571         struct btmrvl_thread *thread = data;
 572         struct btmrvl_private *priv = thread->priv;
 573         struct btmrvl_adapter *adapter = priv->adapter;
 574         wait_queue_t wait;
 575         struct sk_buff *skb;
 576         ulong flags;
 577
 578         init_waitqueue_entry(&wait, current);
 579
 580         for (;;) {
 581                 add_wait_queue(&thread->wait_q, &wait);
 582
 583                 set_current_state(TASK_INTERRUPTIBLE);
 584                 if (kthread_should_stop()) {
 585                         BT_DBG("main_thread: break from main thread");
 586                         break;
 587                 }
 588
 589                 if (adapter->wakeup_tries ||
 590                                 ((!adapter->int_count) &&
 591                                 (!priv->btmrvl_dev.tx_dnld_rdy ||
 592                                 skb_queue_empty(&adapter->tx_queue)))) {
 593                         BT_DBG("main_thread is sleeping...");
 594                         schedule();
 595                 }
 596
 597                 set_current_state(TASK_RUNNING);
 598
 599                 remove_wait_queue(&thread->wait_q, &wait);
 600
 601                 BT_DBG("main_thread woke up");
 602
 603                 spin_lock_irqsave(&priv->driver_lock, flags);
 604                 if (adapter->int_count) {
 605                         adapter->int_count = 0;
 606                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 607                         priv->hw_process_int_status(priv);
 608                 } else if (adapter->ps_state == PS_SLEEP &&
 609                                         !skb_queue_empty(&adapter->tx_queue)) {
 610                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 611                         adapter->wakeup_tries++;
 612                         priv->hw_wakeup_firmware(priv);
 613                         continue;
 614                 } else {
 615                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 616                 }
 617
 618                 if (adapter->ps_state == PS_SLEEP)
 619                         continue;
 620
 621                 if (!priv->btmrvl_dev.tx_dnld_rdy)
 622                         continue;
 623
 624                 skb = skb_dequeue(&adapter->tx_queue);
 625                 if (skb) {
 626                         if (btmrvl_tx_pkt(priv, skb))
 627                                 priv->btmrvl_dev.hcidev->stat.err_tx++;
 628                         else
 629                                 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
 630
 631                         kfree_skb(skb);
 632                 }
 633         }
 634
 635         return 0;
 636 }
 637
 638 int btmrvl_register_hdev(struct btmrvl_private *priv)
 639 {
 640         struct hci_dev *hdev = NULL;
 641         int ret;
 642
 643         hdev = hci_alloc_dev();
 644         if (!hdev) {
 645                 BT_ERR("Can not allocate HCI device");
 646                 goto err_hdev;
 647         }
 648
 649         priv->btmrvl_dev.hcidev = hdev;
 650         hci_set_drvdata(hdev, priv);
 651
 652         hdev->bus   = HCI_SDIO;
 653         hdev->open  = btmrvl_open;
 654         hdev->close = btmrvl_close;
 655         hdev->flush = btmrvl_flush;
 656         hdev->send  = btmrvl_send_frame;
 657         hdev->setup = btmrvl_setup;
 658         hdev->set_bdaddr = btmrvl_set_bdaddr;
 659
 660         hdev->dev_type = priv->btmrvl_dev.dev_type;
 661
 662         ret = hci_register_dev(hdev);
 663         if (ret < 0) {
 664                 BT_ERR("Can not register HCI device");
 665                 goto err_hci_register_dev;
 666         }
 667
 668 #ifdef CONFIG_DEBUG_FS
 669         btmrvl_debugfs_init(hdev);
 670 #endif
 671
 672         return 0;
 673
 674 err_hci_register_dev:
 675         hci_free_dev(hdev);
 676
 677 err_hdev:
 678         /* Stop the thread servicing the interrupts */
 679         kthread_stop(priv->main_thread.task);
 680
 681         btmrvl_free_adapter(priv);
 682         kfree(priv);
 683
 684         return -ENOMEM;
 685 }
 686 EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
 687
 688 struct btmrvl_private *btmrvl_add_card(void *card)
 689 {
 690         struct btmrvl_private *priv;
 691
 692         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 693         if (!priv) {
 694                 BT_ERR("Can not allocate priv");
 695                 goto err_priv;
 696         }
 697
 698         priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
 699         if (!priv->adapter) {
 700                 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
 701                 goto err_adapter;
 702         }
 703
 704         btmrvl_init_adapter(priv);
 705
 706         BT_DBG("Starting kthread...");
 707         priv->main_thread.priv = priv;
 708         spin_lock_init(&priv->driver_lock);
 709
 710         init_waitqueue_head(&priv->main_thread.wait_q);
 711         priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
 712                                 &priv->main_thread, "btmrvl_main_service");
 713         if (IS_ERR(priv->main_thread.task))
 714                 goto err_thread;
 715
 716         priv->btmrvl_dev.card = card;
 717         priv->btmrvl_dev.tx_dnld_rdy = true;
 718
 719         return priv;
 720
 721 err_thread:
 722         btmrvl_free_adapter(priv);
 723
 724 err_adapter:
 725         kfree(priv);
 726
 727 err_priv:
 728         return NULL;
 729 }
 730 EXPORT_SYMBOL_GPL(btmrvl_add_card);
 731
 732 int btmrvl_remove_card(struct btmrvl_private *priv)
 733 {
 734         struct hci_dev *hdev;
 735
 736         hdev = priv->btmrvl_dev.hcidev;
 737
 738         wake_up_interruptible(&priv->adapter->cmd_wait_q);
 739         wake_up_interruptible(&priv->adapter->event_hs_wait_q);
 740
 741         kthread_stop(priv->main_thread.task);
 742
 743 #ifdef CONFIG_DEBUG_FS
 744         btmrvl_debugfs_remove(hdev);
 745 #endif
 746
 747         hci_unregister_dev(hdev);
 748
 749         hci_free_dev(hdev);
 750
 751         priv->btmrvl_dev.hcidev = NULL;
 752
 753         btmrvl_free_adapter(priv);
 754
 755         kfree(priv);
 756
 757         return 0;
 758 }
 759 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
 760
 761 MODULE_AUTHOR("Marvell International Ltd.");
 762 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
 763 MODULE_VERSION(VERSION);
 764 MODULE_LICENSE("GPL v2");