linux/drivers/bluetooth/btmrvl_main.c
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   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 */
  37void 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}
  52EXPORT_SYMBOL_GPL(btmrvl_interrupt);
  53
  54bool 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}
  81EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
  82
  83int 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_PRIMARY;
 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
 167exit:
 168        if (!ret)
 169                kfree_skb(skb);
 170
 171        return ret;
 172}
 173EXPORT_SYMBOL_GPL(btmrvl_process_event);
 174
 175static 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        if (priv->surprise_removed) {
 182                BT_ERR("Card is removed");
 183                return -EFAULT;
 184        }
 185
 186        skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_KERNEL);
 187        if (!skb) {
 188                BT_ERR("No free skb");
 189                return -ENOMEM;
 190        }
 191
 192        hdr = skb_put(skb, HCI_COMMAND_HDR_SIZE);
 193        hdr->opcode = cpu_to_le16(opcode);
 194        hdr->plen = len;
 195
 196        if (len)
 197                skb_put_data(skb, param, len);
 198
 199        hci_skb_pkt_type(skb) = MRVL_VENDOR_PKT;
 200
 201        skb_queue_head(&priv->adapter->tx_queue, skb);
 202
 203        priv->btmrvl_dev.sendcmdflag = true;
 204
 205        priv->adapter->cmd_complete = false;
 206
 207        wake_up_interruptible(&priv->main_thread.wait_q);
 208
 209        if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
 210                                              priv->adapter->cmd_complete ||
 211                                              priv->surprise_removed,
 212                                              WAIT_UNTIL_CMD_RESP))
 213                return -ETIMEDOUT;
 214
 215        if (priv->surprise_removed)
 216                return -EFAULT;
 217
 218        return 0;
 219}
 220
 221int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd)
 222{
 223        int ret;
 224
 225        ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
 226        if (ret)
 227                BT_ERR("module_cfg_cmd(%x) failed", subcmd);
 228
 229        return ret;
 230}
 231EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
 232
 233static int btmrvl_enable_sco_routing_to_host(struct btmrvl_private *priv)
 234{
 235        int ret;
 236        u8 subcmd = 0;
 237
 238        ret = btmrvl_send_sync_cmd(priv, BT_CMD_ROUTE_SCO_TO_HOST, &subcmd, 1);
 239        if (ret)
 240                BT_ERR("BT_CMD_ROUTE_SCO_TO_HOST command failed: %#x", ret);
 241
 242        return ret;
 243}
 244
 245int btmrvl_pscan_window_reporting(struct btmrvl_private *priv, u8 subcmd)
 246{
 247        struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
 248        int ret;
 249
 250        if (!card->support_pscan_win_report)
 251                return 0;
 252
 253        ret = btmrvl_send_sync_cmd(priv, BT_CMD_PSCAN_WIN_REPORT_ENABLE,
 254                                   &subcmd, 1);
 255        if (ret)
 256                BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret);
 257
 258        return ret;
 259}
 260EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting);
 261
 262int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
 263{
 264        int ret;
 265        u8 param[2];
 266
 267        param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
 268        param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
 269
 270        BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
 271               param[0], param[1]);
 272
 273        ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
 274        if (ret)
 275                BT_ERR("HSCFG command failed");
 276
 277        return ret;
 278}
 279EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
 280
 281int btmrvl_enable_ps(struct btmrvl_private *priv)
 282{
 283        int ret;
 284        u8 param;
 285
 286        if (priv->btmrvl_dev.psmode)
 287                param = BT_PS_ENABLE;
 288        else
 289                param = BT_PS_DISABLE;
 290
 291        ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, &param, 1);
 292        if (ret)
 293                BT_ERR("PSMODE command failed");
 294
 295        return 0;
 296}
 297EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
 298
 299int btmrvl_enable_hs(struct btmrvl_private *priv)
 300{
 301        struct btmrvl_adapter *adapter = priv->adapter;
 302        int ret;
 303
 304        ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
 305        if (ret) {
 306                BT_ERR("Host sleep enable command failed");
 307                return ret;
 308        }
 309
 310        ret = wait_event_interruptible_timeout(adapter->event_hs_wait_q,
 311                                               adapter->hs_state ||
 312                                               priv->surprise_removed,
 313                                               WAIT_UNTIL_HS_STATE_CHANGED);
 314        if (ret < 0 || priv->surprise_removed) {
 315                BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d",
 316                       ret, adapter->hs_state, adapter->ps_state,
 317                       adapter->wakeup_tries);
 318        } else if (!ret) {
 319                BT_ERR("hs_enable timeout: %d,%d,%d", adapter->hs_state,
 320                       adapter->ps_state, adapter->wakeup_tries);
 321                ret = -ETIMEDOUT;
 322        } else {
 323                BT_DBG("host sleep enabled: %d,%d,%d", adapter->hs_state,
 324                       adapter->ps_state, adapter->wakeup_tries);
 325                ret = 0;
 326        }
 327
 328        return ret;
 329}
 330EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
 331
 332int btmrvl_prepare_command(struct btmrvl_private *priv)
 333{
 334        int ret = 0;
 335
 336        if (priv->btmrvl_dev.hscfgcmd) {
 337                priv->btmrvl_dev.hscfgcmd = 0;
 338                btmrvl_send_hscfg_cmd(priv);
 339        }
 340
 341        if (priv->btmrvl_dev.pscmd) {
 342                priv->btmrvl_dev.pscmd = 0;
 343                btmrvl_enable_ps(priv);
 344        }
 345
 346        if (priv->btmrvl_dev.hscmd) {
 347                priv->btmrvl_dev.hscmd = 0;
 348
 349                if (priv->btmrvl_dev.hsmode) {
 350                        ret = btmrvl_enable_hs(priv);
 351                } else {
 352                        ret = priv->hw_wakeup_firmware(priv);
 353                        priv->adapter->hs_state = HS_DEACTIVATED;
 354                        BT_DBG("BT: HS DEACTIVATED due to host activity!");
 355                }
 356        }
 357
 358        return ret;
 359}
 360
 361static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
 362{
 363        int ret = 0;
 364
 365        if (!skb || !skb->data)
 366                return -EINVAL;
 367
 368        if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
 369                BT_ERR("Tx Error: Bad skb length %d : %d",
 370                                                skb->len, BTM_UPLD_SIZE);
 371                return -EINVAL;
 372        }
 373
 374        skb_push(skb, BTM_HEADER_LEN);
 375
 376        /* header type: byte[3]
 377         * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
 378         * header length: byte[2][1][0]
 379         */
 380
 381        skb->data[0] = (skb->len & 0x0000ff);
 382        skb->data[1] = (skb->len & 0x00ff00) >> 8;
 383        skb->data[2] = (skb->len & 0xff0000) >> 16;
 384        skb->data[3] = hci_skb_pkt_type(skb);
 385
 386        if (priv->hw_host_to_card)
 387                ret = priv->hw_host_to_card(priv, skb->data, skb->len);
 388
 389        return ret;
 390}
 391
 392static void btmrvl_init_adapter(struct btmrvl_private *priv)
 393{
 394        int buf_size;
 395
 396        skb_queue_head_init(&priv->adapter->tx_queue);
 397
 398        priv->adapter->ps_state = PS_AWAKE;
 399
 400        buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
 401        priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
 402        if (!priv->adapter->hw_regs_buf) {
 403                priv->adapter->hw_regs = NULL;
 404                BT_ERR("Unable to allocate buffer for hw_regs.");
 405        } else {
 406                priv->adapter->hw_regs =
 407                        (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
 408                                         BTSDIO_DMA_ALIGN);
 409                BT_DBG("hw_regs_buf=%p hw_regs=%p",
 410                       priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
 411        }
 412
 413        init_waitqueue_head(&priv->adapter->cmd_wait_q);
 414        init_waitqueue_head(&priv->adapter->event_hs_wait_q);
 415}
 416
 417static void btmrvl_free_adapter(struct btmrvl_private *priv)
 418{
 419        skb_queue_purge(&priv->adapter->tx_queue);
 420
 421        kfree(priv->adapter->hw_regs_buf);
 422        kfree(priv->adapter);
 423
 424        priv->adapter = NULL;
 425}
 426
 427static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 428{
 429        struct btmrvl_private *priv = hci_get_drvdata(hdev);
 430
 431        BT_DBG("type=%d, len=%d", hci_skb_pkt_type(skb), skb->len);
 432
 433        if (priv->adapter->is_suspending || priv->adapter->is_suspended) {
 434                BT_ERR("%s: Device is suspending or suspended", __func__);
 435                return -EBUSY;
 436        }
 437
 438        switch (hci_skb_pkt_type(skb)) {
 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        if (!priv->adapter->is_suspended)
 455                wake_up_interruptible(&priv->main_thread.wait_q);
 456
 457        return 0;
 458}
 459
 460static int btmrvl_flush(struct hci_dev *hdev)
 461{
 462        struct btmrvl_private *priv = hci_get_drvdata(hdev);
 463
 464        skb_queue_purge(&priv->adapter->tx_queue);
 465
 466        return 0;
 467}
 468
 469static int btmrvl_close(struct hci_dev *hdev)
 470{
 471        struct btmrvl_private *priv = hci_get_drvdata(hdev);
 472
 473        skb_queue_purge(&priv->adapter->tx_queue);
 474
 475        return 0;
 476}
 477
 478static int btmrvl_open(struct hci_dev *hdev)
 479{
 480        return 0;
 481}
 482
 483static int btmrvl_download_cal_data(struct btmrvl_private *priv,
 484                                    u8 *data, int len)
 485{
 486        int ret;
 487
 488        data[0] = 0x00;
 489        data[1] = 0x00;
 490        data[2] = 0x00;
 491        data[3] = len;
 492
 493        print_hex_dump_bytes("Calibration data: ",
 494                             DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
 495
 496        ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
 497                                   BT_CAL_HDR_LEN + len);
 498        if (ret)
 499                BT_ERR("Failed to download calibration data");
 500
 501        return 0;
 502}
 503
 504static int btmrvl_check_device_tree(struct btmrvl_private *priv)
 505{
 506        struct device_node *dt_node;
 507        struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
 508        u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
 509        int ret = 0;
 510        u16 gpio, gap;
 511
 512        if (card->plt_of_node) {
 513                dt_node = card->plt_of_node;
 514                ret = of_property_read_u16(dt_node, "marvell,wakeup-pin",
 515                                           &gpio);
 516                if (ret)
 517                        gpio = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
 518
 519                ret = of_property_read_u16(dt_node, "marvell,wakeup-gap-ms",
 520                                           &gap);
 521                if (ret)
 522                        gap = (u8)(priv->btmrvl_dev.gpio_gap & 0x00ff);
 523
 524                priv->btmrvl_dev.gpio_gap = (gpio << 8) + gap;
 525
 526                ret = of_property_read_u8_array(dt_node, "marvell,cal-data",
 527                                                cal_data + BT_CAL_HDR_LEN,
 528                                                BT_CAL_DATA_SIZE);
 529                if (ret)
 530                        return ret;
 531
 532                BT_DBG("Use cal data from device tree");
 533                ret = btmrvl_download_cal_data(priv, cal_data,
 534                                               BT_CAL_DATA_SIZE);
 535                if (ret)
 536                        BT_ERR("Fail to download calibrate data");
 537        }
 538
 539        return ret;
 540}
 541
 542static int btmrvl_setup(struct hci_dev *hdev)
 543{
 544        struct btmrvl_private *priv = hci_get_drvdata(hdev);
 545        int ret;
 546
 547        ret = btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
 548        if (ret)
 549                return ret;
 550
 551        priv->btmrvl_dev.gpio_gap = 0xfffe;
 552
 553        btmrvl_check_device_tree(priv);
 554
 555        btmrvl_enable_sco_routing_to_host(priv);
 556
 557        btmrvl_pscan_window_reporting(priv, 0x01);
 558
 559        priv->btmrvl_dev.psmode = 1;
 560        btmrvl_enable_ps(priv);
 561
 562        btmrvl_send_hscfg_cmd(priv);
 563
 564        return 0;
 565}
 566
 567static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
 568{
 569        struct sk_buff *skb;
 570        long ret;
 571        u8 buf[8];
 572
 573        buf[0] = MRVL_VENDOR_PKT;
 574        buf[1] = sizeof(bdaddr_t);
 575        memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
 576
 577        skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf,
 578                             HCI_INIT_TIMEOUT);
 579        if (IS_ERR(skb)) {
 580                ret = PTR_ERR(skb);
 581                BT_ERR("%s: changing btmrvl device address failed (%ld)",
 582                       hdev->name, ret);
 583                return ret;
 584        }
 585        kfree_skb(skb);
 586
 587        return 0;
 588}
 589
 590/*
 591 * This function handles the event generated by firmware, rx data
 592 * received from firmware, and tx data sent from kernel.
 593 */
 594static int btmrvl_service_main_thread(void *data)
 595{
 596        struct btmrvl_thread *thread = data;
 597        struct btmrvl_private *priv = thread->priv;
 598        struct btmrvl_adapter *adapter = priv->adapter;
 599        wait_queue_entry_t wait;
 600        struct sk_buff *skb;
 601        ulong flags;
 602
 603        init_waitqueue_entry(&wait, current);
 604
 605        for (;;) {
 606                add_wait_queue(&thread->wait_q, &wait);
 607
 608                set_current_state(TASK_INTERRUPTIBLE);
 609                if (kthread_should_stop() || priv->surprise_removed) {
 610                        BT_DBG("main_thread: break from main thread");
 611                        break;
 612                }
 613
 614                if (adapter->wakeup_tries ||
 615                                ((!adapter->int_count) &&
 616                                (!priv->btmrvl_dev.tx_dnld_rdy ||
 617                                skb_queue_empty(&adapter->tx_queue)))) {
 618                        BT_DBG("main_thread is sleeping...");
 619                        schedule();
 620                }
 621
 622                set_current_state(TASK_RUNNING);
 623
 624                remove_wait_queue(&thread->wait_q, &wait);
 625
 626                BT_DBG("main_thread woke up");
 627
 628                if (kthread_should_stop() || priv->surprise_removed) {
 629                        BT_DBG("main_thread: break from main thread");
 630                        break;
 631                }
 632
 633                spin_lock_irqsave(&priv->driver_lock, flags);
 634                if (adapter->int_count) {
 635                        adapter->int_count = 0;
 636                        spin_unlock_irqrestore(&priv->driver_lock, flags);
 637                        priv->hw_process_int_status(priv);
 638                } else if (adapter->ps_state == PS_SLEEP &&
 639                                        !skb_queue_empty(&adapter->tx_queue)) {
 640                        spin_unlock_irqrestore(&priv->driver_lock, flags);
 641                        adapter->wakeup_tries++;
 642                        priv->hw_wakeup_firmware(priv);
 643                        continue;
 644                } else {
 645                        spin_unlock_irqrestore(&priv->driver_lock, flags);
 646                }
 647
 648                if (adapter->ps_state == PS_SLEEP)
 649                        continue;
 650
 651                if (!priv->btmrvl_dev.tx_dnld_rdy ||
 652                    priv->adapter->is_suspended)
 653                        continue;
 654
 655                skb = skb_dequeue(&adapter->tx_queue);
 656                if (skb) {
 657                        if (btmrvl_tx_pkt(priv, skb))
 658                                priv->btmrvl_dev.hcidev->stat.err_tx++;
 659                        else
 660                                priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
 661
 662                        kfree_skb(skb);
 663                }
 664        }
 665
 666        return 0;
 667}
 668
 669int btmrvl_register_hdev(struct btmrvl_private *priv)
 670{
 671        struct hci_dev *hdev = NULL;
 672        int ret;
 673
 674        hdev = hci_alloc_dev();
 675        if (!hdev) {
 676                BT_ERR("Can not allocate HCI device");
 677                goto err_hdev;
 678        }
 679
 680        priv->btmrvl_dev.hcidev = hdev;
 681        hci_set_drvdata(hdev, priv);
 682
 683        hdev->bus   = HCI_SDIO;
 684        hdev->open  = btmrvl_open;
 685        hdev->close = btmrvl_close;
 686        hdev->flush = btmrvl_flush;
 687        hdev->send  = btmrvl_send_frame;
 688        hdev->setup = btmrvl_setup;
 689        hdev->set_bdaddr = btmrvl_set_bdaddr;
 690
 691        hdev->dev_type = priv->btmrvl_dev.dev_type;
 692
 693        ret = hci_register_dev(hdev);
 694        if (ret < 0) {
 695                BT_ERR("Can not register HCI device");
 696                goto err_hci_register_dev;
 697        }
 698
 699#ifdef CONFIG_DEBUG_FS
 700        btmrvl_debugfs_init(hdev);
 701#endif
 702
 703        return 0;
 704
 705err_hci_register_dev:
 706        hci_free_dev(hdev);
 707
 708err_hdev:
 709        /* Stop the thread servicing the interrupts */
 710        kthread_stop(priv->main_thread.task);
 711
 712        btmrvl_free_adapter(priv);
 713        kfree(priv);
 714
 715        return -ENOMEM;
 716}
 717EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
 718
 719struct btmrvl_private *btmrvl_add_card(void *card)
 720{
 721        struct btmrvl_private *priv;
 722
 723        priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 724        if (!priv) {
 725                BT_ERR("Can not allocate priv");
 726                goto err_priv;
 727        }
 728
 729        priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
 730        if (!priv->adapter) {
 731                BT_ERR("Allocate buffer for btmrvl_adapter failed!");
 732                goto err_adapter;
 733        }
 734
 735        btmrvl_init_adapter(priv);
 736
 737        BT_DBG("Starting kthread...");
 738        priv->main_thread.priv = priv;
 739        spin_lock_init(&priv->driver_lock);
 740
 741        init_waitqueue_head(&priv->main_thread.wait_q);
 742        priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
 743                                &priv->main_thread, "btmrvl_main_service");
 744        if (IS_ERR(priv->main_thread.task))
 745                goto err_thread;
 746
 747        priv->btmrvl_dev.card = card;
 748        priv->btmrvl_dev.tx_dnld_rdy = true;
 749
 750        return priv;
 751
 752err_thread:
 753        btmrvl_free_adapter(priv);
 754
 755err_adapter:
 756        kfree(priv);
 757
 758err_priv:
 759        return NULL;
 760}
 761EXPORT_SYMBOL_GPL(btmrvl_add_card);
 762
 763int btmrvl_remove_card(struct btmrvl_private *priv)
 764{
 765        struct hci_dev *hdev;
 766
 767        hdev = priv->btmrvl_dev.hcidev;
 768
 769        wake_up_interruptible(&priv->adapter->cmd_wait_q);
 770        wake_up_interruptible(&priv->adapter->event_hs_wait_q);
 771
 772        kthread_stop(priv->main_thread.task);
 773
 774#ifdef CONFIG_DEBUG_FS
 775        btmrvl_debugfs_remove(hdev);
 776#endif
 777
 778        hci_unregister_dev(hdev);
 779
 780        hci_free_dev(hdev);
 781
 782        priv->btmrvl_dev.hcidev = NULL;
 783
 784        btmrvl_free_adapter(priv);
 785
 786        kfree(priv);
 787
 788        return 0;
 789}
 790EXPORT_SYMBOL_GPL(btmrvl_remove_card);
 791
 792MODULE_AUTHOR("Marvell International Ltd.");
 793MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
 794MODULE_VERSION(VERSION);
 795MODULE_LICENSE("GPL v2");
 796