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 #include <linux/mmc/sdio_func.h>
  26
  27 #include "btmrvl_drv.h"
  28 #include "btmrvl_sdio.h"
  29
  30 #define VERSION "1.0"
  31
  32 /*
  33  * This function is called by interface specific interrupt handler.
  34  * It updates Power Save & Host Sleep states, and wakes up the main
  35  * thread.
  36  */
  37 void btmrvl_interrupt(struct btmrvl_private *priv)
  38 {
  39         priv->adapter->ps_state = PS_AWAKE;
  40
  41         priv->adapter->wakeup_tries = 0;
  42
  43         priv->adapter->int_count++;
  44
  45         if (priv->adapter->hs_state == HS_ACTIVATED) {
  46                 BT_DBG("BT: HS DEACTIVATED in ISR!");
  47                 priv->adapter->hs_state = HS_DEACTIVATED;
  48         }
  49
  50         wake_up_interruptible(&priv->main_thread.wait_q);
  51 }
  52 EXPORT_SYMBOL_GPL(btmrvl_interrupt);
  53
  54 bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
  55 {
  56         struct hci_event_hdr *hdr = (void *) skb->data;
  57
  58         if (hdr->evt == HCI_EV_CMD_COMPLETE) {
  59                 struct hci_ev_cmd_complete *ec;
  60                 u16 opcode;
  61
  62                 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
  63                 opcode = __le16_to_cpu(ec->opcode);
  64
  65                 if (priv->btmrvl_dev.sendcmdflag) {
  66                         priv->btmrvl_dev.sendcmdflag = false;
  67                         priv->adapter->cmd_complete = true;
  68                         wake_up_interruptible(&priv->adapter->cmd_wait_q);
  69
  70                         if (hci_opcode_ogf(opcode) == 0x3F) {
  71                                 BT_DBG("vendor event skipped: opcode=%#4.4x",
  72                                        opcode);
  73                                 kfree_skb(skb);
  74                                 return false;
  75                         }
  76                 }
  77         }
  78
  79         return true;
  80 }
  81 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
  82
  83 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
  84 {
  85         struct btmrvl_adapter *adapter = priv->adapter;
  86         struct btmrvl_event *event;
  87         int ret = 0;
  88
  89         event = (struct btmrvl_event *) skb->data;
  90         if (event->ec != 0xff) {
  91                 BT_DBG("Not Marvell Event=%x", event->ec);
  92                 ret = -EINVAL;
  93                 goto exit;
  94         }
  95
  96         switch (event->data[0]) {
  97         case BT_EVENT_AUTO_SLEEP_MODE:
  98                 if (!event->data[2]) {
  99                         if (event->data[1] == BT_PS_ENABLE)
 100                                 adapter->psmode = 1;
 101                         else
 102                                 adapter->psmode = 0;
 103                         BT_DBG("PS Mode:%s",
 104                                 (adapter->psmode) ? "Enable" : "Disable");
 105                 } else {
 106                         BT_DBG("PS Mode command failed");
 107                 }
 108                 break;
 109
 110         case BT_EVENT_HOST_SLEEP_CONFIG:
 111                 if (!event->data[3])
 112                         BT_DBG("gpio=%x, gap=%x", event->data[1],
 113                                                         event->data[2]);
 114                 else
 115                         BT_DBG("HSCFG command failed");
 116                 break;
 117
 118         case BT_EVENT_HOST_SLEEP_ENABLE:
 119                 if (!event->data[1]) {
 120                         adapter->hs_state = HS_ACTIVATED;
 121                         if (adapter->psmode)
 122                                 adapter->ps_state = PS_SLEEP;
 123                         wake_up_interruptible(&adapter->event_hs_wait_q);
 124                         BT_DBG("HS ACTIVATED!");
 125                 } else {
 126                         BT_DBG("HS Enable failed");
 127                 }
 128                 break;
 129
 130         case BT_EVENT_MODULE_CFG_REQ:
 131                 if (priv->btmrvl_dev.sendcmdflag &&
 132                                 event->data[1] == MODULE_BRINGUP_REQ) {
 133                         BT_DBG("EVENT:%s",
 134                                 ((event->data[2] == MODULE_BROUGHT_UP) ||
 135                                 (event->data[2] == MODULE_ALREADY_UP)) ?
 136                                 "Bring-up succeed" : "Bring-up failed");
 137
 138                         if (event->length > 3 && event->data[3])
 139                                 priv->btmrvl_dev.dev_type = HCI_AMP;
 140                         else
 141                                 priv->btmrvl_dev.dev_type = HCI_BREDR;
 142
 143                         BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
 144                 } else if (priv->btmrvl_dev.sendcmdflag &&
 145                                 event->data[1] == MODULE_SHUTDOWN_REQ) {
 146                         BT_DBG("EVENT:%s", (event->data[2]) ?
 147                                 "Shutdown failed" : "Shutdown succeed");
 148                 } else {
 149                         BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
 150                         ret = -EINVAL;
 151                 }
 152                 break;
 153
 154         case BT_EVENT_POWER_STATE:
 155                 if (event->data[1] == BT_PS_SLEEP)
 156                         adapter->ps_state = PS_SLEEP;
 157                 BT_DBG("EVENT:%s",
 158                         (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
 159                 break;
 160
 161         default:
 162                 BT_DBG("Unknown Event=%d", event->data[0]);
 163                 ret = -EINVAL;
 164                 break;
 165         }
 166
 167 exit:
 168         if (!ret)
 169                 kfree_skb(skb);
 170
 171         return ret;
 172 }
 173 EXPORT_SYMBOL_GPL(btmrvl_process_event);
 174
 175 static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
 176                                 const void *param, u8 len)
 177 {
 178         struct sk_buff *skb;
 179         struct hci_command_hdr *hdr;
 180
 181         skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
 182         if (skb == NULL) {
 183                 BT_ERR("No free skb");
 184                 return -ENOMEM;
 185         }
 186
 187         hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
 188         hdr->opcode = cpu_to_le16(opcode);
 189         hdr->plen = len;
 190
 191         if (len)
 192                 memcpy(skb_put(skb, len), param, len);
 193
 194         bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
 195
 196         skb_queue_head(&priv->adapter->tx_queue, skb);
 197
 198         priv->btmrvl_dev.sendcmdflag = true;
 199
 200         priv->adapter->cmd_complete = false;
 201
 202         wake_up_interruptible(&priv->main_thread.wait_q);
 203
 204         if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 205                                 priv->adapter->cmd_complete,
 206                                 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP)))
 207                 return -ETIMEDOUT;
 208
 209         return 0;
 210 }
 211
 212 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd)
 213 {
 214         int ret;
 215
 216         ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
 217         if (ret)
 218                 BT_ERR("module_cfg_cmd(%x) failed", subcmd);
 219
 220         return ret;
 221 }
 222 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
 223
 224 int btmrvl_pscan_window_reporting(struct btmrvl_private *priv, u8 subcmd)
 225 {
 226         struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
 227         int ret;
 228
 229         if (!card->support_pscan_win_report)
 230                 return 0;
 231
 232         ret = btmrvl_send_sync_cmd(priv, BT_CMD_PSCAN_WIN_REPORT_ENABLE,
 233                                    &subcmd, 1);
 234         if (ret)
 235                 BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret);
 236
 237         return ret;
 238 }
 239 EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting);
 240
 241 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
 242 {
 243         int ret;
 244         u8 param[2];
 245
 246         param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
 247         param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
 248
 249         BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
 250                param[0], param[1]);
 251
 252         ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
 253         if (ret)
 254                 BT_ERR("HSCFG command failed");
 255
 256         return ret;
 257 }
 258 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
 259
 260 int btmrvl_enable_ps(struct btmrvl_private *priv)
 261 {
 262         int ret;
 263         u8 param;
 264
 265         if (priv->btmrvl_dev.psmode)
 266                 param = BT_PS_ENABLE;
 267         else
 268                 param = BT_PS_DISABLE;
 269
 270         ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, &param, 1);
 271         if (ret)
 272                 BT_ERR("PSMODE command failed");
 273
 274         return 0;
 275 }
 276 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
 277
 278 int btmrvl_enable_hs(struct btmrvl_private *priv)
 279 {
 280         struct btmrvl_adapter *adapter = priv->adapter;
 281         int ret;
 282
 283         ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
 284         if (ret) {
 285                 BT_ERR("Host sleep enable command failed");
 286                 return ret;
 287         }
 288
 289         ret = wait_event_interruptible_timeout(adapter->event_hs_wait_q,
 290                                                adapter->hs_state,
 291                         msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED));
 292         if (ret < 0) {
 293                 BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d",
 294                        ret, adapter->hs_state, adapter->ps_state,
 295                        adapter->wakeup_tries);
 296         } else if (!ret) {
 297                 BT_ERR("hs_enable timeout: %d,%d,%d", adapter->hs_state,
 298                        adapter->ps_state, adapter->wakeup_tries);
 299                 ret = -ETIMEDOUT;
 300         } else {
 301                 BT_DBG("host sleep enabled: %d,%d,%d", adapter->hs_state,
 302                        adapter->ps_state, adapter->wakeup_tries);
 303                 ret = 0;
 304         }
 305
 306         return ret;
 307 }
 308 EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
 309
 310 int btmrvl_prepare_command(struct btmrvl_private *priv)
 311 {
 312         int ret = 0;
 313
 314         if (priv->btmrvl_dev.hscfgcmd) {
 315                 priv->btmrvl_dev.hscfgcmd = 0;
 316                 btmrvl_send_hscfg_cmd(priv);
 317         }
 318
 319         if (priv->btmrvl_dev.pscmd) {
 320                 priv->btmrvl_dev.pscmd = 0;
 321                 btmrvl_enable_ps(priv);
 322         }
 323
 324         if (priv->btmrvl_dev.hscmd) {
 325                 priv->btmrvl_dev.hscmd = 0;
 326
 327                 if (priv->btmrvl_dev.hsmode) {
 328                         ret = btmrvl_enable_hs(priv);
 329                 } else {
 330                         ret = priv->hw_wakeup_firmware(priv);
 331                         priv->adapter->hs_state = HS_DEACTIVATED;
 332                         BT_DBG("BT: HS DEACTIVATED due to host activity!");
 333                 }
 334         }
 335
 336         return ret;
 337 }
 338
 339 void btmrvl_firmware_dump(struct btmrvl_private *priv)
 340 {
 341         if (priv->firmware_dump)
 342                 priv->firmware_dump(priv);
 343 }
 344
 345 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
 346 {
 347         int ret = 0;
 348
 349         if (!skb || !skb->data)
 350                 return -EINVAL;
 351
 352         if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
 353                 BT_ERR("Tx Error: Bad skb length %d : %d",
 354                                                 skb->len, BTM_UPLD_SIZE);
 355                 return -EINVAL;
 356         }
 357
 358         if (skb_headroom(skb) < BTM_HEADER_LEN) {
 359                 struct sk_buff *tmp = skb;
 360
 361                 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
 362                 if (!skb) {
 363                         BT_ERR("Tx Error: realloc_headroom failed %d",
 364                                 BTM_HEADER_LEN);
 365                         skb = tmp;
 366                         return -EINVAL;
 367                 }
 368
 369                 kfree_skb(tmp);
 370         }
 371
 372         skb_push(skb, BTM_HEADER_LEN);
 373
 374         /* header type: byte[3]
 375          * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
 376          * header length: byte[2][1][0]
 377          */
 378
 379         skb->data[0] = (skb->len & 0x0000ff);
 380         skb->data[1] = (skb->len & 0x00ff00) >> 8;
 381         skb->data[2] = (skb->len & 0xff0000) >> 16;
 382         skb->data[3] = bt_cb(skb)->pkt_type;
 383
 384         if (priv->hw_host_to_card)
 385                 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
 386
 387         return ret;
 388 }
 389
 390 static void btmrvl_init_adapter(struct btmrvl_private *priv)
 391 {
 392         int buf_size;
 393
 394         skb_queue_head_init(&priv->adapter->tx_queue);
 395
 396         priv->adapter->ps_state = PS_AWAKE;
 397
 398         buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
 399         priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
 400         if (!priv->adapter->hw_regs_buf) {
 401                 priv->adapter->hw_regs = NULL;
 402                 BT_ERR("Unable to allocate buffer for hw_regs.");
 403         } else {
 404                 priv->adapter->hw_regs =
 405                         (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
 406                                          BTSDIO_DMA_ALIGN);
 407                 BT_DBG("hw_regs_buf=%p hw_regs=%p",
 408                        priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
 409         }
 410
 411         init_waitqueue_head(&priv->adapter->cmd_wait_q);
 412         init_waitqueue_head(&priv->adapter->event_hs_wait_q);
 413 }
 414
 415 static void btmrvl_free_adapter(struct btmrvl_private *priv)
 416 {
 417         skb_queue_purge(&priv->adapter->tx_queue);
 418
 419         kfree(priv->adapter->hw_regs_buf);
 420         kfree(priv->adapter);
 421
 422         priv->adapter = NULL;
 423 }
 424
 425 static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 426 {
 427         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 428
 429         BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
 430
 431         if (!test_bit(HCI_RUNNING, &hdev->flags)) {
 432                 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
 433                 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
 434                                                         skb->data, skb->len);
 435                 return -EBUSY;
 436         }
 437
 438         switch (bt_cb(skb)->pkt_type) {
 439         case HCI_COMMAND_PKT:
 440                 hdev->stat.cmd_tx++;
 441                 break;
 442
 443         case HCI_ACLDATA_PKT:
 444                 hdev->stat.acl_tx++;
 445                 break;
 446
 447         case HCI_SCODATA_PKT:
 448                 hdev->stat.sco_tx++;
 449                 break;
 450         }
 451
 452         skb_queue_tail(&priv->adapter->tx_queue, skb);
 453
 454         wake_up_interruptible(&priv->main_thread.wait_q);
 455
 456         return 0;
 457 }
 458
 459 static int btmrvl_flush(struct hci_dev *hdev)
 460 {
 461         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 462
 463         skb_queue_purge(&priv->adapter->tx_queue);
 464
 465         return 0;
 466 }
 467
 468 static int btmrvl_close(struct hci_dev *hdev)
 469 {
 470         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 471
 472         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 473                 return 0;
 474
 475         skb_queue_purge(&priv->adapter->tx_queue);
 476
 477         return 0;
 478 }
 479
 480 static int btmrvl_open(struct hci_dev *hdev)
 481 {
 482         set_bit(HCI_RUNNING, &hdev->flags);
 483
 484         return 0;
 485 }
 486
 487 static int btmrvl_download_cal_data(struct btmrvl_private *priv,
 488                                     u8 *data, int len)
 489 {
 490         int ret;
 491
 492         data[0] = 0x00;
 493         data[1] = 0x00;
 494         data[2] = 0x00;
 495         data[3] = len;
 496
 497         print_hex_dump_bytes("Calibration data: ",
 498                              DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
 499
 500         ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
 501                                    BT_CAL_HDR_LEN + len);
 502         if (ret)
 503                 BT_ERR("Failed to download caibration data");
 504
 505         return 0;
 506 }
 507
 508 static int btmrvl_check_device_tree(struct btmrvl_private *priv)
 509 {
 510         struct device_node *dt_node;
 511         u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
 512         int ret;
 513         u32 val;
 514
 515         for_each_compatible_node(dt_node, NULL, "btmrvl,cfgdata") {
 516                 ret = of_property_read_u32(dt_node, "btmrvl,gpio-gap", &val);
 517                 if (!ret)
 518                         priv->btmrvl_dev.gpio_gap = val;
 519
 520                 ret = of_property_read_u8_array(dt_node, "btmrvl,cal-data",
 521                                                 cal_data + BT_CAL_HDR_LEN,
 522                                                 BT_CAL_DATA_SIZE);
 523                 if (ret)
 524                         return ret;
 525
 526                 BT_DBG("Use cal data from device tree");
 527                 ret = btmrvl_download_cal_data(priv, cal_data,
 528                                                BT_CAL_DATA_SIZE);
 529                 if (ret) {
 530                         BT_ERR("Fail to download calibrate data");
 531                         return ret;
 532                 }
 533         }
 534
 535         return 0;
 536 }
 537
 538 static int btmrvl_setup(struct hci_dev *hdev)
 539 {
 540         struct btmrvl_private *priv = hci_get_drvdata(hdev);
 541
 542         btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
 543
 544         priv->btmrvl_dev.gpio_gap = 0xffff;
 545
 546         btmrvl_check_device_tree(priv);
 547
 548         btmrvl_pscan_window_reporting(priv, 0x01);
 549
 550         priv->btmrvl_dev.psmode = 1;
 551         btmrvl_enable_ps(priv);
 552
 553         btmrvl_send_hscfg_cmd(priv);
 554
 555         return 0;
 556 }
 557
 558 static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
 559 {
 560         struct sk_buff *skb;
 561         long ret;
 562         u8 buf[8];
 563
 564         buf[0] = MRVL_VENDOR_PKT;
 565         buf[1] = sizeof(bdaddr_t);
 566         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
 567
 568         skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf,
 569                              HCI_INIT_TIMEOUT);
 570         if (IS_ERR(skb)) {
 571                 ret = PTR_ERR(skb);
 572                 BT_ERR("%s: changing btmrvl device address failed (%ld)",
 573                        hdev->name, ret);
 574                 return ret;
 575         }
 576         kfree_skb(skb);
 577
 578         return 0;
 579 }
 580
 581 /*
 582  * This function handles the event generated by firmware, rx data
 583  * received from firmware, and tx data sent from kernel.
 584  */
 585 static int btmrvl_service_main_thread(void *data)
 586 {
 587         struct btmrvl_thread *thread = data;
 588         struct btmrvl_private *priv = thread->priv;
 589         struct btmrvl_adapter *adapter = priv->adapter;
 590         wait_queue_t wait;
 591         struct sk_buff *skb;
 592         ulong flags;
 593
 594         init_waitqueue_entry(&wait, current);
 595
 596         for (;;) {
 597                 add_wait_queue(&thread->wait_q, &wait);
 598
 599                 set_current_state(TASK_INTERRUPTIBLE);
 600                 if (kthread_should_stop()) {
 601                         BT_DBG("main_thread: break from main thread");
 602                         break;
 603                 }
 604
 605                 if (adapter->wakeup_tries ||
 606                                 ((!adapter->int_count) &&
 607                                 (!priv->btmrvl_dev.tx_dnld_rdy ||
 608                                 skb_queue_empty(&adapter->tx_queue)))) {
 609                         BT_DBG("main_thread is sleeping...");
 610                         schedule();
 611                 }
 612
 613                 set_current_state(TASK_RUNNING);
 614
 615                 remove_wait_queue(&thread->wait_q, &wait);
 616
 617                 BT_DBG("main_thread woke up");
 618
 619                 spin_lock_irqsave(&priv->driver_lock, flags);
 620                 if (adapter->int_count) {
 621                         adapter->int_count = 0;
 622                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 623                         priv->hw_process_int_status(priv);
 624                 } else if (adapter->ps_state == PS_SLEEP &&
 625                                         !skb_queue_empty(&adapter->tx_queue)) {
 626                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 627                         adapter->wakeup_tries++;
 628                         priv->hw_wakeup_firmware(priv);
 629                         continue;
 630                 } else {
 631                         spin_unlock_irqrestore(&priv->driver_lock, flags);
 632                 }
 633
 634                 if (adapter->ps_state == PS_SLEEP)
 635                         continue;
 636
 637                 if (!priv->btmrvl_dev.tx_dnld_rdy)
 638                         continue;
 639
 640                 skb = skb_dequeue(&adapter->tx_queue);
 641                 if (skb) {
 642                         if (btmrvl_tx_pkt(priv, skb))
 643                                 priv->btmrvl_dev.hcidev->stat.err_tx++;
 644                         else
 645                                 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
 646
 647                         kfree_skb(skb);
 648                 }
 649         }
 650
 651         return 0;
 652 }
 653
 654 int btmrvl_register_hdev(struct btmrvl_private *priv)
 655 {
 656         struct hci_dev *hdev = NULL;
 657         int ret;
 658
 659         hdev = hci_alloc_dev();
 660         if (!hdev) {
 661                 BT_ERR("Can not allocate HCI device");
 662                 goto err_hdev;
 663         }
 664
 665         priv->btmrvl_dev.hcidev = hdev;
 666         hci_set_drvdata(hdev, priv);
 667
 668         hdev->bus   = HCI_SDIO;
 669         hdev->open  = btmrvl_open;
 670         hdev->close = btmrvl_close;
 671         hdev->flush = btmrvl_flush;
 672         hdev->send  = btmrvl_send_frame;
 673         hdev->setup = btmrvl_setup;
 674         hdev->set_bdaddr = btmrvl_set_bdaddr;
 675
 676         hdev->dev_type = priv->btmrvl_dev.dev_type;
 677
 678         ret = hci_register_dev(hdev);
 679         if (ret < 0) {
 680                 BT_ERR("Can not register HCI device");
 681                 goto err_hci_register_dev;
 682         }
 683
 684 #ifdef CONFIG_DEBUG_FS
 685         btmrvl_debugfs_init(hdev);
 686 #endif
 687
 688         return 0;
 689
 690 err_hci_register_dev:
 691         hci_free_dev(hdev);
 692
 693 err_hdev:
 694         /* Stop the thread servicing the interrupts */
 695         kthread_stop(priv->main_thread.task);
 696
 697         btmrvl_free_adapter(priv);
 698         kfree(priv);
 699
 700         return -ENOMEM;
 701 }
 702 EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
 703
 704 struct btmrvl_private *btmrvl_add_card(void *card)
 705 {
 706         struct btmrvl_private *priv;
 707
 708         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 709         if (!priv) {
 710                 BT_ERR("Can not allocate priv");
 711                 goto err_priv;
 712         }
 713
 714         priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
 715         if (!priv->adapter) {
 716                 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
 717                 goto err_adapter;
 718         }
 719
 720         btmrvl_init_adapter(priv);
 721
 722         BT_DBG("Starting kthread...");
 723         priv->main_thread.priv = priv;
 724         spin_lock_init(&priv->driver_lock);
 725
 726         init_waitqueue_head(&priv->main_thread.wait_q);
 727         priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
 728                                 &priv->main_thread, "btmrvl_main_service");
 729         if (IS_ERR(priv->main_thread.task))
 730                 goto err_thread;
 731
 732         priv->btmrvl_dev.card = card;
 733         priv->btmrvl_dev.tx_dnld_rdy = true;
 734
 735         return priv;
 736
 737 err_thread:
 738         btmrvl_free_adapter(priv);
 739
 740 err_adapter:
 741         kfree(priv);
 742
 743 err_priv:
 744         return NULL;
 745 }
 746 EXPORT_SYMBOL_GPL(btmrvl_add_card);
 747
 748 int btmrvl_remove_card(struct btmrvl_private *priv)
 749 {
 750         struct hci_dev *hdev;
 751
 752         hdev = priv->btmrvl_dev.hcidev;
 753
 754         wake_up_interruptible(&priv->adapter->cmd_wait_q);
 755         wake_up_interruptible(&priv->adapter->event_hs_wait_q);
 756
 757         kthread_stop(priv->main_thread.task);
 758
 759 #ifdef CONFIG_DEBUG_FS
 760         btmrvl_debugfs_remove(hdev);
 761 #endif
 762
 763         hci_unregister_dev(hdev);
 764
 765         hci_free_dev(hdev);
 766
 767         priv->btmrvl_dev.hcidev = NULL;
 768
 769         btmrvl_free_adapter(priv);
 770
 771         kfree(priv);
 772
 773         return 0;
 774 }
 775 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
 776
 777 MODULE_AUTHOR("Marvell International Ltd.");
 778 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
 779 MODULE_VERSION(VERSION);
 780 MODULE_LICENSE("GPL v2");