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         if (priv->adapter->hs_state == HS_ACTIVATED) {
  45                 BT_DBG("BT: HS DEACTIVATED in ISR!");
  46                 priv->adapter->hs_state = HS_DEACTIVATED;
  47         }
  48
  49         wake_up_interruptible(&priv->main_thread.wait_q);
  50 }
  51 EXPORT_SYMBOL_GPL(btmrvl_interrupt);
  52
  53 bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
  54 {
  55         struct hci_event_hdr *hdr = (void *) skb->data;
  56
  57         if (hdr->evt == HCI_EV_CMD_COMPLETE) {
  58                 struct hci_ev_cmd_complete *ec;
  59                 u16 opcode;
  60
  61                 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
  62                 opcode = __le16_to_cpu(ec->opcode);
  63
  64                 if (priv->btmrvl_dev.sendcmdflag) {
  65                         priv->btmrvl_dev.sendcmdflag = false;
  66                         priv->adapter->cmd_complete = true;
  67                         wake_up_interruptible(&priv->adapter->cmd_wait_q);
  68
  69                         if (hci_opcode_ogf(opcode) == 0x3F) {
  70                                 BT_DBG("vendor event skipped: opcode=%#4.4x",
  71                                        opcode);
  72                                 kfree_skb(skb);
  73                                 return false;
  74                         }
  75                 }
  76         }
  77
  78         return true;
  79 }
  80 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
  81
  82 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
  83 {
  84         struct btmrvl_adapter *adapter = priv->adapter;
  85         struct btmrvl_event *event;
  86         int ret = 0;
  87
  88         event = (struct btmrvl_event *) skb->data;
  89         if (event->ec != 0xff) {
  90                 BT_DBG("Not Marvell Event=%x", event->ec);
  91                 ret = -EINVAL;
  92                 goto exit;
  93         }
  94
  95         switch (event->data[0]) {
  96         case BT_EVENT_AUTO_SLEEP_MODE:
  97                 if (!event->data[2]) {
  98                         if (event->data[1] == BT_PS_ENABLE)
  99                                 adapter->psmode = 1;
 100                         else
 101                                 adapter->psmode = 0;
 102                         BT_DBG("PS Mode:%s",
 103                                 (adapter->psmode) ? "Enable" : "Disable");
 104                 } else {
 105                         BT_DBG("PS Mode command failed");
 106                 }
 107                 break;
 108
 109         case BT_EVENT_HOST_SLEEP_CONFIG:
 110                 if (!event->data[3])
 111                         BT_DBG("gpio=%x, gap=%x", event->data[1],
 112                                                         event->data[2]);
 113                 else
 114                         BT_DBG("HSCFG command failed");
 115                 break;
 116
 117         case BT_EVENT_HOST_SLEEP_ENABLE:
 118                 if (!event->data[1]) {
 119                         adapter->hs_state = HS_ACTIVATED;
 120                         if (adapter->psmode)
 121                                 adapter->ps_state = PS_SLEEP;
 122                         wake_up_interruptible(&adapter->event_hs_wait_q);
 123                         BT_DBG("HS ACTIVATED!");
 124                 } else {
 125                         BT_DBG("HS Enable failed");
 126                 }
 127                 break;
 128
 129         case BT_EVENT_MODULE_CFG_REQ:
 130                 if (priv->btmrvl_dev.sendcmdflag &&
 131                                 event->data[1] == MODULE_BRINGUP_REQ) {
 132                         BT_DBG("EVENT:%s",
 133                                 ((event->data[2] == MODULE_BROUGHT_UP) ||
 134                                 (event->data[2] == MODULE_ALREADY_UP)) ?
 135                                 "Bring-up succeed" : "Bring-up failed");
 136
 137                         if (event->length > 3 && event->data[3])
 138                                 priv->btmrvl_dev.dev_type = HCI_AMP;
 139                         else
 140                                 priv->btmrvl_dev.dev_type = HCI_BREDR;
 141
 142                         BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
 143                 } else if (priv->btmrvl_dev.sendcmdflag &&
 144                                 event->data[1] == MODULE_SHUTDOWN_REQ) {
 145                         BT_DBG("EVENT:%s", (event->data[2]) ?
 146                                 "Shutdown failed" : "Shutdown succeed");
 147                 } else {
 148                         BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
 149                         ret = -EINVAL;
 150                 }
 151                 break;
 152
 153         case BT_EVENT_POWER_STATE:
 154                 if (event->data[1] == BT_PS_SLEEP)
 155                         adapter->ps_state = PS_SLEEP;
 156                 BT_DBG("EVENT:%s",
 157                         (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
 158                 break;
 159
 160         default:
 161                 BT_DBG("Unknown Event=%d", event->data[0]);
 162                 ret = -EINVAL;
 163                 break;
 164         }
 165
 166 exit:
 167         if (!ret)
 168                 kfree_skb(skb);
 169
 170         return ret;
 171 }
 172 EXPORT_SYMBOL_GPL(btmrvl_process_event);
 173
 174 static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
 175                                 const void *param, u8 len)
 176 {
 177         struct sk_buff *skb;
 178         struct hci_command_hdr *hdr;
 179
 180         skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
 181         if (skb == NULL) {
 182                 BT_ERR("No free skb");
 183                 return -ENOMEM;
 184         }
 185
 186         hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
 187         hdr->opcode = cpu_to_le16(opcode);
 188         hdr->plen = len;
 189
 190         if (len)
 191                 memcpy(skb_put(skb, len), param, len);
 192
 193         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 194
 195         skb_queue_head(&priv->adapter->tx_queue, skb);
 196
 197         priv->btmrvl_dev.sendcmdflag = true;
 198
 199         priv->adapter->cmd_complete = false;
 200
 201         wake_up_interruptible(&priv->main_thread.wait_q);
 202
 203         if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 204                                 priv->adapter->cmd_complete,
 205                                 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP)))
 206                 return -ETIMEDOUT;
 207
 208         return 0;
 209 }
 210
 211 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd)
 212 {
 213         int ret;
 214
 215         ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
 216         if (ret)
 217                 BT_ERR("module_cfg_cmd(%x) failed", subcmd);
 218
 219         return ret;
 220 }
 221 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
 222
 223 int btmrvl_pscan_window_reporting(struct btmrvl_private *priv, u8 subcmd)
 224 {
 225         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
 226         int ret;
 227
 228         if (!card->support_pscan_win_report)
 229                 return 0;
 230
 231         ret = btmrvl_send_sync_cmd(priv, BT_CMD_PSCAN_WIN_REPORT_ENABLE,
 232                                    &subcmd, 1);
 233         if (ret)
 234                 BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret);
 235
 236         return ret;
 237 }
 238 EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting);
 239
 240 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
 241 {
 242         int ret;
 243         u8 param[2];
 244
 245         param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
 246         param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
 247
 248         BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
 249                param[0], param[1]);
 250
 251         ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
 252         if (ret)
 253                 BT_ERR("HSCFG command failed");
 254
 255         return ret;
 256 }
 257 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
 258
 259 int btmrvl_enable_ps(struct btmrvl_private *priv)
 260 {
 261         int ret;
 262         u8 param;
 263
 264         if (priv->btmrvl_dev.psmode)
 265                 param = BT_PS_ENABLE;
 266         else
 267                 param = BT_PS_DISABLE;
 268
 269         ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, &param, 1);
 270         if (ret)
 271                 BT_ERR("PSMODE command failed");
 272
 273         return 0;
 274 }
 275 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
 276
 277 int btmrvl_enable_hs(struct btmrvl_private *priv)
 278 {
 279         struct btmrvl_adapter *adapter = priv->adapter;
 280         int ret;
 281
 282         ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
 283         if (ret) {
 284                 BT_ERR("Host sleep enable command failed");
 285                 return ret;
 286         }
 287
 288         ret = wait_event_interruptible_timeout(adapter->event_hs_wait_q,
 289                                                adapter->hs_state,
 290                         msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED));
 291         if (ret < 0) {
 292                 BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d",
 293                        ret, adapter->hs_state, adapter->ps_state,
 294                        adapter->wakeup_tries);
 295         } else if (!ret) {
 296                 BT_ERR("hs_enable timeout: %d,%d,%d", adapter->hs_state,
 297                        adapter->ps_state, adapter->wakeup_tries);
 298                 ret = -ETIMEDOUT;
 299         } else {
 300                 BT_DBG("host sleep enabled: %d,%d,%d", adapter->hs_state,
 301                        adapter->ps_state, adapter->wakeup_tries);
 302                 ret = 0;
 303         }
 304
 305         return ret;
 306 }
 307 EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
 308
 309 int btmrvl_prepare_command(struct btmrvl_private *priv)
 310 {
 311         int ret = 0;
 312
 313         if (priv->btmrvl_dev.hscfgcmd) {
 314                 priv->btmrvl_dev.hscfgcmd = 0;
 315                 btmrvl_send_hscfg_cmd(priv);
 316         }
 317
 318         if (priv->btmrvl_dev.pscmd) {
 319                 priv->btmrvl_dev.pscmd = 0;
 320                 btmrvl_enable_ps(priv);
 321         }
 322
 323         if (priv->btmrvl_dev.hscmd) {
 324                 priv->btmrvl_dev.hscmd = 0;
 325
 326                 if (priv->btmrvl_dev.hsmode) {
 327                         ret = btmrvl_enable_hs(priv);
 328                 } else {
 329                         ret = priv->hw_wakeup_firmware(priv);
 330                         priv->adapter->hs_state = HS_DEACTIVATED;
 331                         BT_DBG("BT: HS DEACTIVATED due to host activity!");
 332                 }
 333         }
 334
 335         return ret;
 336 }
 337
 338 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
 339 {
 340         int ret = 0;
 341
 342         if (!skb || !skb->data)
 343                 return -EINVAL;
 344
 345         if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
 346                 BT_ERR("Tx Error: Bad skb length %d : %d",
 347                                                 skb->len, BTM_UPLD_SIZE);
 348                 return -EINVAL;
 349         }
 350
 351         if (skb_headroom(skb) < BTM_HEADER_LEN) {
 352                 struct sk_buff *tmp = skb;
 353
 354                 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
 355                 if (!skb) {
 356                         BT_ERR("Tx Error: realloc_headroom failed %d",
 357                                 BTM_HEADER_LEN);
 358                         skb = tmp;
 359                         return -EINVAL;
 360                 }
 361
 362                 kfree_skb(tmp);
 363         }
 364
 365         skb_push(skb, BTM_HEADER_LEN);
 366
 367         /* header type: byte[3]
 368          * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
 369          * header length: byte[2][1][0]
 370          */
 371
 372         skb->data[0] = (skb->len & 0x0000ff);
 373         skb->data[1] = (skb->len & 0x00ff00) >> 8;
 374         skb->data[2] = (skb->len & 0xff0000) >> 16;
 375         skb->data[3] = bt_cb(skb)->pkt_type;
 376
 377         if (priv->hw_host_to_card)
 378                 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
 379
 380         return ret;
 381 }
 382
 383 static void btmrvl_init_adapter(struct btmrvl_private *priv)
 384 {
 385         int buf_size;
 386
 387         skb_queue_head_init(&priv->adapter->tx_queue);
 388
 389         priv->adapter->ps_state = PS_AWAKE;
 390
 391         buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
 392         priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
 393         if (!priv->adapter->hw_regs_buf) {
 394                 priv->adapter->hw_regs = NULL;
 395                 BT_ERR("Unable to allocate buffer for hw_regs.");
 396         } else {
 397                 priv->adapter->hw_regs =
 398                         (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
 399                                          BTSDIO_DMA_ALIGN);
 400                 BT_DBG("hw_regs_buf=%p hw_regs=%p",
 401                        priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
 402         }
 403
 404         init_waitqueue_head(&priv->adapter->cmd_wait_q);
 405         init_waitqueue_head(&priv->adapter->event_hs_wait_q);
 406 }
 407
 408 static void btmrvl_free_adapter(struct btmrvl_private *priv)
 409 {
 410         skb_queue_purge(&priv->adapter->tx_queue);
 411
 412         kfree(priv->adapter->hw_regs_buf);
 413         kfree(priv->adapter);
 414
 415         priv->adapter = NULL;
 416 }
 417
 418 static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 419 {
 420         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 421
 422         BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
 423
 424         if (!test_bit(HCI_RUNNING, &hdev->flags)) {
 425                 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
 426                 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
 427                                                         skb->data, skb->len);
 428                 return -EBUSY;
 429         }
 430
 431         switch (bt_cb(skb)->pkt_type) {
 432         case HCI_COMMAND_PKT:
 433                 hdev->stat.cmd_tx++;
 434                 break;
 435
 436         case HCI_ACLDATA_PKT:
 437                 hdev->stat.acl_tx++;
 438                 break;
 439
 440         case HCI_SCODATA_PKT:
 441                 hdev->stat.sco_tx++;
 442                 break;
 443         }
 444
 445         skb_queue_tail(&priv->adapter->tx_queue, skb);
 446
 447         wake_up_interruptible(&priv->main_thread.wait_q);
 448
 449         return 0;
 450 }
 451
 452 static int btmrvl_flush(struct hci_dev *hdev)
 453 {
 454         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 455
 456         skb_queue_purge(&priv->adapter->tx_queue);
 457
 458         return 0;
 459 }
 460
 461 static int btmrvl_close(struct hci_dev *hdev)
 462 {
 463         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 464
 465         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 466                 return 0;
 467
 468         skb_queue_purge(&priv->adapter->tx_queue);
 469
 470         return 0;
 471 }
 472
 473 static int btmrvl_open(struct hci_dev *hdev)
 474 {
 475         set_bit(HCI_RUNNING, &hdev->flags);
 476
 477         return 0;
 478 }
 479
 480 static int btmrvl_download_cal_data(struct btmrvl_private *priv,
 481                                     u8 *data, int len)
 482 {
 483         int ret;
 484
 485         data[0] = 0x00;
 486         data[1] = 0x00;
 487         data[2] = 0x00;
 488         data[3] = len;
 489
 490         print_hex_dump_bytes("Calibration data: ",
 491                              DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
 492
 493         ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
 494                                    BT_CAL_HDR_LEN + len);
 495         if (ret)
 496                 BT_ERR("Failed to download caibration data");
 497
 498         return 0;
 499 }
 500
 501 static int btmrvl_check_device_tree(struct btmrvl_private *priv)
 502 {
 503         struct device_node *dt_node;
 504         u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
 505         int ret;
 506         u32 val;
 507
 508         for_each_compatible_node(dt_node, NULL, "btmrvl,cfgdata") {
 509                 ret = of_property_read_u32(dt_node, "btmrvl,gpio-gap", &val);
 510                 if (!ret)
 511                         priv->btmrvl_dev.gpio_gap = val;
 512
 513                 ret = of_property_read_u8_array(dt_node, "btmrvl,cal-data",
 514                                                 cal_data + BT_CAL_HDR_LEN,
 515                                                 BT_CAL_DATA_SIZE);
 516                 if (ret)
 517                         return ret;
 518
 519                 BT_DBG("Use cal data from device tree");
 520                 ret = btmrvl_download_cal_data(priv, cal_data,
 521                                                BT_CAL_DATA_SIZE);
 522                 if (ret) {
 523                         BT_ERR("Fail to download calibrate data");
 524                         return ret;
 525                 }
 526         }
 527
 528         return 0;
 529 }
 530
 531 static int btmrvl_setup(struct hci_dev *hdev)
 532 {
 533         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 534
 535         btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
 536
 537         priv->btmrvl_dev.gpio_gap = 0xffff;
 538
 539         btmrvl_check_device_tree(priv);
 540
 541         btmrvl_pscan_window_reporting(priv, 0x01);
 542
 543         priv->btmrvl_dev.psmode = 1;
 544         btmrvl_enable_ps(priv);
 545
 546         btmrvl_send_hscfg_cmd(priv);
 547
 548         return 0;
 549 }
 550
 551 static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
 552 {
 553         struct sk_buff *skb;
 554         long ret;
 555         u8 buf[8];
 556
 557         buf[0] = MRVL_VENDOR_PKT;
 558         buf[1] = sizeof(bdaddr_t);
 559         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
 560
 561         skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf,
 562                              HCI_INIT_TIMEOUT);
 563         if (IS_ERR(skb)) {
 564                 ret = PTR_ERR(skb);
 565                 BT_ERR("%s: changing btmrvl device address failed (%ld)",
 566                        hdev->name, ret);
 567                 return ret;
 568         }
 569         kfree_skb(skb);
 570
 571         return 0;
 572 }
 573
 574 /*
 575  * This function handles the event generated by firmware, rx data
 576  * received from firmware, and tx data sent from kernel.
 577  */
 578 static int btmrvl_service_main_thread(void *data)
 579 {
 580         struct btmrvl_thread *thread = data;
 581         struct btmrvl_private *priv = thread->priv;
 582         struct btmrvl_adapter *adapter = priv->adapter;
 583         wait_queue_t wait;
 584         struct sk_buff *skb;
 585         ulong flags;
 586
 587         init_waitqueue_entry(&wait, current);
 588
 589         for (;;) {
 590                 add_wait_queue(&thread->wait_q, &wait);
 591
 592                 set_current_state(TASK_INTERRUPTIBLE);
 593                 if (kthread_should_stop()) {
 594                         BT_DBG("main_thread: break from main thread");
 595                         break;
 596                 }
 597
 598                 if (adapter->wakeup_tries ||
 599                                 ((!adapter->int_count) &&
 600                                 (!priv->btmrvl_dev.tx_dnld_rdy ||
 601                                 skb_queue_empty(&adapter->tx_queue)))) {
 602                         BT_DBG("main_thread is sleeping...");
 603                         schedule();
 604                 }
 605
 606                 set_current_state(TASK_RUNNING);
 607
 608                 remove_wait_queue(&thread->wait_q, &wait);
 609
 610                 BT_DBG("main_thread woke up");
 611
 612                 spin_lock_irqsave(&priv->driver_lock, flags);
 613                 if (adapter->int_count) {
 614                         adapter->int_count = 0;
 615                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 616                         priv->hw_process_int_status(priv);
 617                 } else if (adapter->ps_state == PS_SLEEP &&
 618                                         !skb_queue_empty(&adapter->tx_queue)) {
 619                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 620                         adapter->wakeup_tries++;
 621                         priv->hw_wakeup_firmware(priv);
 622                         continue;
 623                 } else {
 624                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 625                 }
 626
 627                 if (adapter->ps_state == PS_SLEEP)
 628                         continue;
 629
 630                 if (!priv->btmrvl_dev.tx_dnld_rdy)
 631                         continue;
 632
 633                 skb = skb_dequeue(&adapter->tx_queue);
 634                 if (skb) {
 635                         if (btmrvl_tx_pkt(priv, skb))
 636                                 priv->btmrvl_dev.hcidev->stat.err_tx++;
 637                         else
 638                                 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
 639
 640                         kfree_skb(skb);
 641                 }
 642         }
 643
 644         return 0;
 645 }
 646
 647 int btmrvl_register_hdev(struct btmrvl_private *priv)
 648 {
 649         struct hci_dev *hdev = NULL;
 650         int ret;
 651
 652         hdev = hci_alloc_dev();
 653         if (!hdev) {
 654                 BT_ERR("Can not allocate HCI device");
 655                 goto err_hdev;
 656         }
 657
 658         priv->btmrvl_dev.hcidev = hdev;
 659         hci_set_drvdata(hdev, priv);
 660
 661         hdev->bus   = HCI_SDIO;
 662         hdev->open  = btmrvl_open;
 663         hdev->close = btmrvl_close;
 664         hdev->flush = btmrvl_flush;
 665         hdev->send  = btmrvl_send_frame;
 666         hdev->setup = btmrvl_setup;
 667         hdev->set_bdaddr = btmrvl_set_bdaddr;
 668
 669         hdev->dev_type = priv->btmrvl_dev.dev_type;
 670
 671         ret = hci_register_dev(hdev);
 672         if (ret < 0) {
 673                 BT_ERR("Can not register HCI device");
 674                 goto err_hci_register_dev;
 675         }
 676
 677 #ifdef CONFIG_DEBUG_FS
 678         btmrvl_debugfs_init(hdev);
 679 #endif
 680
 681         return 0;
 682
 683 err_hci_register_dev:
 684         hci_free_dev(hdev);
 685
 686 err_hdev:
 687         /* Stop the thread servicing the interrupts */
 688         kthread_stop(priv->main_thread.task);
 689
 690         btmrvl_free_adapter(priv);
 691         kfree(priv);
 692
 693         return -ENOMEM;
 694 }
 695 EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
 696
 697 struct btmrvl_private *btmrvl_add_card(void *card)
 698 {
 699         struct btmrvl_private *priv;
 700
 701         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 702         if (!priv) {
 703                 BT_ERR("Can not allocate priv");
 704                 goto err_priv;
 705         }
 706
 707         priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
 708         if (!priv->adapter) {
 709                 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
 710                 goto err_adapter;
 711         }
 712
 713         btmrvl_init_adapter(priv);
 714
 715         BT_DBG("Starting kthread...");
 716         priv->main_thread.priv = priv;
 717         spin_lock_init(&priv->driver_lock);
 718
 719         init_waitqueue_head(&priv->main_thread.wait_q);
 720         priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
 721                                 &priv->main_thread, "btmrvl_main_service");
 722         if (IS_ERR(priv->main_thread.task))
 723                 goto err_thread;
 724
 725         priv->btmrvl_dev.card = card;
 726         priv->btmrvl_dev.tx_dnld_rdy = true;
 727
 728         return priv;
 729
 730 err_thread:
 731         btmrvl_free_adapter(priv);
 732
 733 err_adapter:
 734         kfree(priv);
 735
 736 err_priv:
 737         return NULL;
 738 }
 739 EXPORT_SYMBOL_GPL(btmrvl_add_card);
 740
 741 int btmrvl_remove_card(struct btmrvl_private *priv)
 742 {
 743         struct hci_dev *hdev;
 744
 745         hdev = priv->btmrvl_dev.hcidev;
 746
 747         wake_up_interruptible(&priv->adapter->cmd_wait_q);
 748         wake_up_interruptible(&priv->adapter->event_hs_wait_q);
 749
 750         kthread_stop(priv->main_thread.task);
 751
 752 #ifdef CONFIG_DEBUG_FS
 753         btmrvl_debugfs_remove(hdev);
 754 #endif
 755
 756         hci_unregister_dev(hdev);
 757
 758         hci_free_dev(hdev);
 759
 760         priv->btmrvl_dev.hcidev = NULL;
 761
 762         btmrvl_free_adapter(priv);
 763
 764         kfree(priv);
 765
 766         return 0;
 767 }
 768 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
 769
 770 MODULE_AUTHOR("Marvell International Ltd.");
 771 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
 772 MODULE_VERSION(VERSION);
 773 MODULE_LICENSE("GPL v2");