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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Marvell Bluetooth driver
4 *
5 * Copyright (C) 2009, Marvell International Ltd.
6 **/
7
8#include <linux/module.h>
9#include <linux/of.h>
10#include <net/bluetooth/bluetooth.h>
11#include <net/bluetooth/hci_core.h>
12#include <linux/mmc/sdio_func.h>
13
14#include "btmrvl_drv.h"
15#include "btmrvl_sdio.h"
16
17#define VERSION "1.0"
18
19/*
20 * This function is called by interface specific interrupt handler.
21 * It updates Power Save & Host Sleep states, and wakes up the main
22 * thread.
23 */
24void btmrvl_interrupt(struct btmrvl_private *priv)
25{
26 priv->adapter->ps_state = PS_AWAKE;
27
28 priv->adapter->wakeup_tries = 0;
29
30 priv->adapter->int_count++;
31
32 if (priv->adapter->hs_state == HS_ACTIVATED) {
33 BT_DBG("BT: HS DEACTIVATED in ISR!");
34 priv->adapter->hs_state = HS_DEACTIVATED;
35 }
36
37 wake_up_interruptible(&priv->main_thread.wait_q);
38}
39EXPORT_SYMBOL_GPL(btmrvl_interrupt);
40
41bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
42{
43 struct hci_event_hdr *hdr = (void *) skb->data;
44
45 if (hdr->evt == HCI_EV_CMD_COMPLETE) {
46 struct hci_ev_cmd_complete *ec;
47 u16 opcode;
48
49 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
50 opcode = __le16_to_cpu(ec->opcode);
51
52 if (priv->btmrvl_dev.sendcmdflag) {
53 priv->btmrvl_dev.sendcmdflag = false;
54 priv->adapter->cmd_complete = true;
55 wake_up_interruptible(&priv->adapter->cmd_wait_q);
56
57 if (hci_opcode_ogf(opcode) == 0x3F) {
58 BT_DBG("vendor event skipped: opcode=%#4.4x",
59 opcode);
60 kfree_skb(skb);
61 return false;
62 }
63 }
64 }
65
66 return true;
67}
68EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
69
70int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
71{
72 struct btmrvl_adapter *adapter = priv->adapter;
73 struct btmrvl_event *event;
74 int ret = 0;
75
76 event = (struct btmrvl_event *) skb->data;
77 if (event->ec != 0xff) {
78 BT_DBG("Not Marvell Event=%x", event->ec);
79 ret = -EINVAL;
80 goto exit;
81 }
82
83 switch (event->data[0]) {
84 case BT_EVENT_AUTO_SLEEP_MODE:
85 if (!event->data[2]) {
86 if (event->data[1] == BT_PS_ENABLE)
87 adapter->psmode = 1;
88 else
89 adapter->psmode = 0;
90 BT_DBG("PS Mode:%s",
91 (adapter->psmode) ? "Enable" : "Disable");
92 } else {
93 BT_DBG("PS Mode command failed");
94 }
95 break;
96
97 case BT_EVENT_HOST_SLEEP_CONFIG:
98 if (!event->data[3])
99 BT_DBG("gpio=%x, gap=%x", event->data[1],
100 event->data[2]);
101 else
102 BT_DBG("HSCFG command failed");
103 break;
104
105 case BT_EVENT_HOST_SLEEP_ENABLE:
106 if (!event->data[1]) {
107 adapter->hs_state = HS_ACTIVATED;
108 if (adapter->psmode)
109 adapter->ps_state = PS_SLEEP;
110 wake_up_interruptible(&adapter->event_hs_wait_q);
111 BT_DBG("HS ACTIVATED!");
112 } else {
113 BT_DBG("HS Enable failed");
114 }
115 break;
116
117 case BT_EVENT_MODULE_CFG_REQ:
118 if (priv->btmrvl_dev.sendcmdflag &&
119 event->data[1] == MODULE_BRINGUP_REQ) {
120 BT_DBG("EVENT:%s",
121 ((event->data[2] == MODULE_BROUGHT_UP) ||
122 (event->data[2] == MODULE_ALREADY_UP)) ?
123 "Bring-up succeed" : "Bring-up failed");
124
125 if (event->length > 3 && event->data[3])
126 priv->btmrvl_dev.dev_type = HCI_AMP;
127 else
128 priv->btmrvl_dev.dev_type = HCI_PRIMARY;
129
130 BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
131 } else if (priv->btmrvl_dev.sendcmdflag &&
132 event->data[1] == MODULE_SHUTDOWN_REQ) {
133 BT_DBG("EVENT:%s", (event->data[2]) ?
134 "Shutdown failed" : "Shutdown succeed");
135 } else {
136 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
137 ret = -EINVAL;
138 }
139 break;
140
141 case BT_EVENT_POWER_STATE:
142 if (event->data[1] == BT_PS_SLEEP)
143 adapter->ps_state = PS_SLEEP;
144 BT_DBG("EVENT:%s",
145 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
146 break;
147
148 default:
149 BT_DBG("Unknown Event=%d", event->data[0]);
150 ret = -EINVAL;
151 break;
152 }
153
154exit:
155 if (!ret)
156 kfree_skb(skb);
157
158 return ret;
159}
160EXPORT_SYMBOL_GPL(btmrvl_process_event);
161
162static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
163 const void *param, u8 len)
164{
165 struct sk_buff *skb;
166 struct hci_command_hdr *hdr;
167
168 if (priv->surprise_removed) {
169 BT_ERR("Card is removed");
170 return -EFAULT;
171 }
172
173 skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_KERNEL);
174 if (!skb) {
175 BT_ERR("No free skb");
176 return -ENOMEM;
177 }
178
179 hdr = skb_put(skb, HCI_COMMAND_HDR_SIZE);
180 hdr->opcode = cpu_to_le16(opcode);
181 hdr->plen = len;
182
183 if (len)
184 skb_put_data(skb, param, len);
185
186 hci_skb_pkt_type(skb) = MRVL_VENDOR_PKT;
187
188 skb_queue_head(&priv->adapter->tx_queue, skb);
189
190 priv->btmrvl_dev.sendcmdflag = true;
191
192 priv->adapter->cmd_complete = false;
193
194 wake_up_interruptible(&priv->main_thread.wait_q);
195
196 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
197 priv->adapter->cmd_complete ||
198 priv->surprise_removed,
199 WAIT_UNTIL_CMD_RESP))
200 return -ETIMEDOUT;
201
202 if (priv->surprise_removed)
203 return -EFAULT;
204
205 return 0;
206}
207
208int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd)
209{
210 int ret;
211
212 ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
213 if (ret)
214 BT_ERR("module_cfg_cmd(%x) failed", subcmd);
215
216 return ret;
217}
218EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
219
220static int btmrvl_enable_sco_routing_to_host(struct btmrvl_private *priv)
221{
222 int ret;
223 u8 subcmd = 0;
224
225 ret = btmrvl_send_sync_cmd(priv, BT_CMD_ROUTE_SCO_TO_HOST, &subcmd, 1);
226 if (ret)
227 BT_ERR("BT_CMD_ROUTE_SCO_TO_HOST command failed: %#x", ret);
228
229 return ret;
230}
231
232int btmrvl_pscan_window_reporting(struct btmrvl_private *priv, u8 subcmd)
233{
234 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
235 int ret;
236
237 if (!card->support_pscan_win_report)
238 return 0;
239
240 ret = btmrvl_send_sync_cmd(priv, BT_CMD_PSCAN_WIN_REPORT_ENABLE,
241 &subcmd, 1);
242 if (ret)
243 BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret);
244
245 return ret;
246}
247EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting);
248
249int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
250{
251 int ret;
252 u8 param[2];
253
254 param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
255 param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
256
257 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
258 param[0], param[1]);
259
260 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
261 if (ret)
262 BT_ERR("HSCFG command failed");
263
264 return ret;
265}
266EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
267
268int btmrvl_enable_ps(struct btmrvl_private *priv)
269{
270 int ret;
271 u8 param;
272
273 if (priv->btmrvl_dev.psmode)
274 param = BT_PS_ENABLE;
275 else
276 param = BT_PS_DISABLE;
277
278 ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, ¶m, 1);
279 if (ret)
280 BT_ERR("PSMODE command failed");
281
282 return 0;
283}
284EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
285
286int btmrvl_enable_hs(struct btmrvl_private *priv)
287{
288 struct btmrvl_adapter *adapter = priv->adapter;
289 int ret;
290
291 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
292 if (ret) {
293 BT_ERR("Host sleep enable command failed");
294 return ret;
295 }
296
297 ret = wait_event_interruptible_timeout(adapter->event_hs_wait_q,
298 adapter->hs_state ||
299 priv->surprise_removed,
300 WAIT_UNTIL_HS_STATE_CHANGED);
301 if (ret < 0 || priv->surprise_removed) {
302 BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d",
303 ret, adapter->hs_state, adapter->ps_state,
304 adapter->wakeup_tries);
305 } else if (!ret) {
306 BT_ERR("hs_enable timeout: %d,%d,%d", adapter->hs_state,
307 adapter->ps_state, adapter->wakeup_tries);
308 ret = -ETIMEDOUT;
309 } else {
310 BT_DBG("host sleep enabled: %d,%d,%d", adapter->hs_state,
311 adapter->ps_state, adapter->wakeup_tries);
312 ret = 0;
313 }
314
315 return ret;
316}
317EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
318
319int btmrvl_prepare_command(struct btmrvl_private *priv)
320{
321 int ret = 0;
322
323 if (priv->btmrvl_dev.hscfgcmd) {
324 priv->btmrvl_dev.hscfgcmd = 0;
325 btmrvl_send_hscfg_cmd(priv);
326 }
327
328 if (priv->btmrvl_dev.pscmd) {
329 priv->btmrvl_dev.pscmd = 0;
330 btmrvl_enable_ps(priv);
331 }
332
333 if (priv->btmrvl_dev.hscmd) {
334 priv->btmrvl_dev.hscmd = 0;
335
336 if (priv->btmrvl_dev.hsmode) {
337 ret = btmrvl_enable_hs(priv);
338 } else {
339 ret = priv->hw_wakeup_firmware(priv);
340 priv->adapter->hs_state = HS_DEACTIVATED;
341 BT_DBG("BT: HS DEACTIVATED due to host activity!");
342 }
343 }
344
345 return ret;
346}
347
348static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
349{
350 int ret = 0;
351
352 if (!skb || !skb->data)
353 return -EINVAL;
354
355 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
356 BT_ERR("Tx Error: Bad skb length %d : %d",
357 skb->len, BTM_UPLD_SIZE);
358 return -EINVAL;
359 }
360
361 skb_push(skb, BTM_HEADER_LEN);
362
363 /* header type: byte[3]
364 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
365 * header length: byte[2][1][0]
366 */
367
368 skb->data[0] = (skb->len & 0x0000ff);
369 skb->data[1] = (skb->len & 0x00ff00) >> 8;
370 skb->data[2] = (skb->len & 0xff0000) >> 16;
371 skb->data[3] = hci_skb_pkt_type(skb);
372
373 if (priv->hw_host_to_card)
374 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
375
376 return ret;
377}
378
379static void btmrvl_init_adapter(struct btmrvl_private *priv)
380{
381 int buf_size;
382
383 skb_queue_head_init(&priv->adapter->tx_queue);
384
385 priv->adapter->ps_state = PS_AWAKE;
386
387 buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
388 priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
389 if (!priv->adapter->hw_regs_buf) {
390 priv->adapter->hw_regs = NULL;
391 BT_ERR("Unable to allocate buffer for hw_regs.");
392 } else {
393 priv->adapter->hw_regs =
394 (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
395 BTSDIO_DMA_ALIGN);
396 BT_DBG("hw_regs_buf=%p hw_regs=%p",
397 priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
398 }
399
400 init_waitqueue_head(&priv->adapter->cmd_wait_q);
401 init_waitqueue_head(&priv->adapter->event_hs_wait_q);
402}
403
404static void btmrvl_free_adapter(struct btmrvl_private *priv)
405{
406 skb_queue_purge(&priv->adapter->tx_queue);
407
408 kfree(priv->adapter->hw_regs_buf);
409 kfree(priv->adapter);
410
411 priv->adapter = NULL;
412}
413
414static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
415{
416 struct btmrvl_private *priv = hci_get_drvdata(hdev);
417
418 BT_DBG("type=%d, len=%d", hci_skb_pkt_type(skb), skb->len);
419
420 if (priv->adapter->is_suspending || priv->adapter->is_suspended) {
421 BT_ERR("%s: Device is suspending or suspended", __func__);
422 return -EBUSY;
423 }
424
425 switch (hci_skb_pkt_type(skb)) {
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 if (!priv->adapter->is_suspended)
442 wake_up_interruptible(&priv->main_thread.wait_q);
443
444 return 0;
445}
446
447static int btmrvl_flush(struct hci_dev *hdev)
448{
449 struct btmrvl_private *priv = hci_get_drvdata(hdev);
450
451 skb_queue_purge(&priv->adapter->tx_queue);
452
453 return 0;
454}
455
456static int btmrvl_close(struct hci_dev *hdev)
457{
458 struct btmrvl_private *priv = hci_get_drvdata(hdev);
459
460 skb_queue_purge(&priv->adapter->tx_queue);
461
462 return 0;
463}
464
465static int btmrvl_open(struct hci_dev *hdev)
466{
467 return 0;
468}
469
470static int btmrvl_download_cal_data(struct btmrvl_private *priv,
471 u8 *data, int len)
472{
473 int ret;
474
475 data[0] = 0x00;
476 data[1] = 0x00;
477 data[2] = 0x00;
478 data[3] = len;
479
480 print_hex_dump_bytes("Calibration data: ",
481 DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
482
483 ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
484 BT_CAL_HDR_LEN + len);
485 if (ret)
486 BT_ERR("Failed to download calibration data");
487
488 return 0;
489}
490
491static int btmrvl_check_device_tree(struct btmrvl_private *priv)
492{
493 struct device_node *dt_node;
494 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
495 u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
496 int ret = 0;
497 u16 gpio, gap;
498
499 if (card->plt_of_node) {
500 dt_node = card->plt_of_node;
501 ret = of_property_read_u16(dt_node, "marvell,wakeup-pin",
502 &gpio);
503 if (ret)
504 gpio = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
505
506 ret = of_property_read_u16(dt_node, "marvell,wakeup-gap-ms",
507 &gap);
508 if (ret)
509 gap = (u8)(priv->btmrvl_dev.gpio_gap & 0x00ff);
510
511 priv->btmrvl_dev.gpio_gap = (gpio << 8) + gap;
512
513 ret = of_property_read_u8_array(dt_node, "marvell,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 }
525
526 return ret;
527}
528
529static int btmrvl_setup(struct hci_dev *hdev)
530{
531 struct btmrvl_private *priv = hci_get_drvdata(hdev);
532 int ret;
533
534 ret = btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
535 if (ret)
536 return ret;
537
538 priv->btmrvl_dev.gpio_gap = 0xfffe;
539
540 btmrvl_check_device_tree(priv);
541
542 btmrvl_enable_sco_routing_to_host(priv);
543
544 btmrvl_pscan_window_reporting(priv, 0x01);
545
546 priv->btmrvl_dev.psmode = 1;
547 btmrvl_enable_ps(priv);
548
549 btmrvl_send_hscfg_cmd(priv);
550
551 return 0;
552}
553
554static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
555{
556 struct sk_buff *skb;
557 long ret;
558 u8 buf[8];
559
560 buf[0] = MRVL_VENDOR_PKT;
561 buf[1] = sizeof(bdaddr_t);
562 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
563
564 skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf,
565 HCI_INIT_TIMEOUT);
566 if (IS_ERR(skb)) {
567 ret = PTR_ERR(skb);
568 BT_ERR("%s: changing btmrvl device address failed (%ld)",
569 hdev->name, ret);
570 return ret;
571 }
572 kfree_skb(skb);
573
574 return 0;
575}
576
577static bool btmrvl_wakeup(struct hci_dev *hdev)
578{
579 struct btmrvl_private *priv = hci_get_drvdata(hdev);
580 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
581
582 return device_may_wakeup(&card->func->dev);
583}
584
585/*
586 * This function handles the event generated by firmware, rx data
587 * received from firmware, and tx data sent from kernel.
588 */
589static int btmrvl_service_main_thread(void *data)
590{
591 struct btmrvl_thread *thread = data;
592 struct btmrvl_private *priv = thread->priv;
593 struct btmrvl_adapter *adapter = priv->adapter;
594 wait_queue_entry_t wait;
595 struct sk_buff *skb;
596 ulong flags;
597
598 init_waitqueue_entry(&wait, current);
599
600 for (;;) {
601 add_wait_queue(&thread->wait_q, &wait);
602
603 set_current_state(TASK_INTERRUPTIBLE);
604 if (kthread_should_stop() || priv->surprise_removed) {
605 BT_DBG("main_thread: break from main thread");
606 break;
607 }
608
609 if (adapter->wakeup_tries ||
610 ((!adapter->int_count) &&
611 (!priv->btmrvl_dev.tx_dnld_rdy ||
612 skb_queue_empty(&adapter->tx_queue)))) {
613 BT_DBG("main_thread is sleeping...");
614 schedule();
615 }
616
617 set_current_state(TASK_RUNNING);
618
619 remove_wait_queue(&thread->wait_q, &wait);
620
621 BT_DBG("main_thread woke up");
622
623 if (kthread_should_stop() || priv->surprise_removed) {
624 BT_DBG("main_thread: break from main thread");
625 break;
626 }
627
628 spin_lock_irqsave(&priv->driver_lock, flags);
629 if (adapter->int_count) {
630 adapter->int_count = 0;
631 spin_unlock_irqrestore(&priv->driver_lock, flags);
632 priv->hw_process_int_status(priv);
633 } else if (adapter->ps_state == PS_SLEEP &&
634 !skb_queue_empty(&adapter->tx_queue)) {
635 spin_unlock_irqrestore(&priv->driver_lock, flags);
636 adapter->wakeup_tries++;
637 priv->hw_wakeup_firmware(priv);
638 continue;
639 } else {
640 spin_unlock_irqrestore(&priv->driver_lock, flags);
641 }
642
643 if (adapter->ps_state == PS_SLEEP)
644 continue;
645
646 if (!priv->btmrvl_dev.tx_dnld_rdy ||
647 priv->adapter->is_suspended)
648 continue;
649
650 skb = skb_dequeue(&adapter->tx_queue);
651 if (skb) {
652 if (btmrvl_tx_pkt(priv, skb))
653 priv->btmrvl_dev.hcidev->stat.err_tx++;
654 else
655 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
656
657 kfree_skb(skb);
658 }
659 }
660
661 return 0;
662}
663
664int btmrvl_register_hdev(struct btmrvl_private *priv)
665{
666 struct hci_dev *hdev = NULL;
667 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
668 int ret;
669
670 hdev = hci_alloc_dev();
671 if (!hdev) {
672 BT_ERR("Can not allocate HCI device");
673 goto err_hdev;
674 }
675
676 priv->btmrvl_dev.hcidev = hdev;
677 hci_set_drvdata(hdev, priv);
678
679 hdev->bus = HCI_SDIO;
680 hdev->open = btmrvl_open;
681 hdev->close = btmrvl_close;
682 hdev->flush = btmrvl_flush;
683 hdev->send = btmrvl_send_frame;
684 hdev->setup = btmrvl_setup;
685 hdev->set_bdaddr = btmrvl_set_bdaddr;
686 hdev->wakeup = btmrvl_wakeup;
687 SET_HCIDEV_DEV(hdev, &card->func->dev);
688
689 hdev->dev_type = priv->btmrvl_dev.dev_type;
690
691 ret = hci_register_dev(hdev);
692 if (ret < 0) {
693 BT_ERR("Can not register HCI device");
694 goto err_hci_register_dev;
695 }
696
697#ifdef CONFIG_DEBUG_FS
698 btmrvl_debugfs_init(hdev);
699#endif
700
701 return 0;
702
703err_hci_register_dev:
704 hci_free_dev(hdev);
705
706err_hdev:
707 /* Stop the thread servicing the interrupts */
708 kthread_stop(priv->main_thread.task);
709
710 btmrvl_free_adapter(priv);
711 kfree(priv);
712
713 return -ENOMEM;
714}
715EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
716
717struct btmrvl_private *btmrvl_add_card(void *card)
718{
719 struct btmrvl_private *priv;
720
721 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
722 if (!priv) {
723 BT_ERR("Can not allocate priv");
724 goto err_priv;
725 }
726
727 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
728 if (!priv->adapter) {
729 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
730 goto err_adapter;
731 }
732
733 btmrvl_init_adapter(priv);
734
735 BT_DBG("Starting kthread...");
736 priv->main_thread.priv = priv;
737 spin_lock_init(&priv->driver_lock);
738
739 init_waitqueue_head(&priv->main_thread.wait_q);
740 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
741 &priv->main_thread, "btmrvl_main_service");
742 if (IS_ERR(priv->main_thread.task))
743 goto err_thread;
744
745 priv->btmrvl_dev.card = card;
746 priv->btmrvl_dev.tx_dnld_rdy = true;
747
748 return priv;
749
750err_thread:
751 btmrvl_free_adapter(priv);
752
753err_adapter:
754 kfree(priv);
755
756err_priv:
757 return NULL;
758}
759EXPORT_SYMBOL_GPL(btmrvl_add_card);
760
761int btmrvl_remove_card(struct btmrvl_private *priv)
762{
763 struct hci_dev *hdev;
764
765 hdev = priv->btmrvl_dev.hcidev;
766
767 wake_up_interruptible(&priv->adapter->cmd_wait_q);
768 wake_up_interruptible(&priv->adapter->event_hs_wait_q);
769
770 kthread_stop(priv->main_thread.task);
771
772#ifdef CONFIG_DEBUG_FS
773 btmrvl_debugfs_remove(hdev);
774#endif
775
776 hci_unregister_dev(hdev);
777
778 hci_free_dev(hdev);
779
780 priv->btmrvl_dev.hcidev = NULL;
781
782 btmrvl_free_adapter(priv);
783
784 kfree(priv);
785
786 return 0;
787}
788EXPORT_SYMBOL_GPL(btmrvl_remove_card);
789
790MODULE_AUTHOR("Marvell International Ltd.");
791MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
792MODULE_VERSION(VERSION);
793MODULE_LICENSE("GPL v2");
1/**
2 * Marvell Bluetooth driver
3 *
4 * Copyright (C) 2009, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 *
15 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
17 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
18 * this warranty disclaimer.
19 **/
20
21#include <linux/module.h>
22
23#include <net/bluetooth/bluetooth.h>
24#include <net/bluetooth/hci_core.h>
25
26#include "btmrvl_drv.h"
27
28#define VERSION "1.0"
29
30/*
31 * This function is called by interface specific interrupt handler.
32 * It updates Power Save & Host Sleep states, and wakes up the main
33 * thread.
34 */
35void btmrvl_interrupt(struct btmrvl_private *priv)
36{
37 priv->adapter->ps_state = PS_AWAKE;
38
39 priv->adapter->wakeup_tries = 0;
40
41 priv->adapter->int_count++;
42
43 wake_up_interruptible(&priv->main_thread.wait_q);
44}
45EXPORT_SYMBOL_GPL(btmrvl_interrupt);
46
47bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
48{
49 struct hci_event_hdr *hdr = (void *) skb->data;
50 struct hci_ev_cmd_complete *ec;
51 u16 opcode, ocf, ogf;
52
53 if (hdr->evt == HCI_EV_CMD_COMPLETE) {
54 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
55 opcode = __le16_to_cpu(ec->opcode);
56 ocf = hci_opcode_ocf(opcode);
57 ogf = hci_opcode_ogf(opcode);
58
59 if (ocf == BT_CMD_MODULE_CFG_REQ &&
60 priv->btmrvl_dev.sendcmdflag) {
61 priv->btmrvl_dev.sendcmdflag = false;
62 priv->adapter->cmd_complete = true;
63 wake_up_interruptible(&priv->adapter->cmd_wait_q);
64 }
65
66 if (ogf == OGF) {
67 BT_DBG("vendor event skipped: ogf 0x%4.4x", ogf);
68 kfree_skb(skb);
69 return false;
70 }
71 }
72
73 return true;
74}
75EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
76
77int 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_CMD_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_CMD_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_CMD_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->cmd_wait_q);
118 BT_DBG("HS ACTIVATED!");
119 } else {
120 BT_DBG("HS Enable failed");
121 }
122 break;
123
124 case BT_CMD_MODULE_CFG_REQ:
125 if (priv->btmrvl_dev.sendcmdflag &&
126 event->data[1] == MODULE_BRINGUP_REQ) {
127 BT_DBG("EVENT:%s",
128 ((event->data[2] == MODULE_BROUGHT_UP) ||
129 (event->data[2] == MODULE_ALREADY_UP)) ?
130 "Bring-up succeed" : "Bring-up failed");
131
132 if (event->length > 3 && event->data[3])
133 priv->btmrvl_dev.dev_type = HCI_AMP;
134 else
135 priv->btmrvl_dev.dev_type = HCI_BREDR;
136
137 BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
138 } else if (priv->btmrvl_dev.sendcmdflag &&
139 event->data[1] == MODULE_SHUTDOWN_REQ) {
140 BT_DBG("EVENT:%s", (event->data[2]) ?
141 "Shutdown failed" : "Shutdown succeed");
142 } else {
143 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
144 ret = -EINVAL;
145 }
146 break;
147
148 case BT_EVENT_POWER_STATE:
149 if (event->data[1] == BT_PS_SLEEP)
150 adapter->ps_state = PS_SLEEP;
151 BT_DBG("EVENT:%s",
152 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
153 break;
154
155 default:
156 BT_DBG("Unknown Event=%d", event->data[0]);
157 ret = -EINVAL;
158 break;
159 }
160
161exit:
162 if (!ret)
163 kfree_skb(skb);
164
165 return ret;
166}
167EXPORT_SYMBOL_GPL(btmrvl_process_event);
168
169int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
170{
171 struct sk_buff *skb;
172 struct btmrvl_cmd *cmd;
173 int ret = 0;
174
175 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
176 if (skb == NULL) {
177 BT_ERR("No free skb");
178 return -ENOMEM;
179 }
180
181 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
182 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_MODULE_CFG_REQ));
183 cmd->length = 1;
184 cmd->data[0] = subcmd;
185
186 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
187
188 skb->dev = (void *) priv->btmrvl_dev.hcidev;
189 skb_queue_head(&priv->adapter->tx_queue, skb);
190
191 priv->btmrvl_dev.sendcmdflag = true;
192
193 priv->adapter->cmd_complete = false;
194
195 BT_DBG("Queue module cfg Command");
196
197 wake_up_interruptible(&priv->main_thread.wait_q);
198
199 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
200 priv->adapter->cmd_complete,
201 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) {
202 ret = -ETIMEDOUT;
203 BT_ERR("module_cfg_cmd(%x): timeout: %d",
204 subcmd, priv->btmrvl_dev.sendcmdflag);
205 }
206
207 BT_DBG("module cfg Command done");
208
209 return ret;
210}
211EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
212
213int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
214{
215 struct sk_buff *skb;
216 struct btmrvl_cmd *cmd;
217
218 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
219 if (!skb) {
220 BT_ERR("No free skb");
221 return -ENOMEM;
222 }
223
224 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
225 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF,
226 BT_CMD_HOST_SLEEP_CONFIG));
227 cmd->length = 2;
228 cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
229 cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
230
231 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
232
233 skb->dev = (void *) priv->btmrvl_dev.hcidev;
234 skb_queue_head(&priv->adapter->tx_queue, skb);
235
236 BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x", cmd->data[0],
237 cmd->data[1]);
238
239 return 0;
240}
241EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
242
243int btmrvl_enable_ps(struct btmrvl_private *priv)
244{
245 struct sk_buff *skb;
246 struct btmrvl_cmd *cmd;
247
248 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
249 if (skb == NULL) {
250 BT_ERR("No free skb");
251 return -ENOMEM;
252 }
253
254 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
255 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF,
256 BT_CMD_AUTO_SLEEP_MODE));
257 cmd->length = 1;
258
259 if (priv->btmrvl_dev.psmode)
260 cmd->data[0] = BT_PS_ENABLE;
261 else
262 cmd->data[0] = BT_PS_DISABLE;
263
264 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
265
266 skb->dev = (void *) priv->btmrvl_dev.hcidev;
267 skb_queue_head(&priv->adapter->tx_queue, skb);
268
269 BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
270
271 return 0;
272}
273EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
274
275int btmrvl_enable_hs(struct btmrvl_private *priv)
276{
277 struct sk_buff *skb;
278 struct btmrvl_cmd *cmd;
279 int ret = 0;
280
281 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
282 if (skb == NULL) {
283 BT_ERR("No free skb");
284 return -ENOMEM;
285 }
286
287 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
288 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_ENABLE));
289 cmd->length = 0;
290
291 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
292
293 skb->dev = (void *) priv->btmrvl_dev.hcidev;
294 skb_queue_head(&priv->adapter->tx_queue, skb);
295
296 BT_DBG("Queue hs enable Command");
297
298 wake_up_interruptible(&priv->main_thread.wait_q);
299
300 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
301 priv->adapter->hs_state,
302 msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
303 ret = -ETIMEDOUT;
304 BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
305 priv->adapter->ps_state,
306 priv->adapter->wakeup_tries);
307 }
308
309 return ret;
310}
311EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
312
313int btmrvl_prepare_command(struct btmrvl_private *priv)
314{
315 int ret = 0;
316
317 if (priv->btmrvl_dev.hscfgcmd) {
318 priv->btmrvl_dev.hscfgcmd = 0;
319 btmrvl_send_hscfg_cmd(priv);
320 }
321
322 if (priv->btmrvl_dev.pscmd) {
323 priv->btmrvl_dev.pscmd = 0;
324 btmrvl_enable_ps(priv);
325 }
326
327 if (priv->btmrvl_dev.hscmd) {
328 priv->btmrvl_dev.hscmd = 0;
329
330 if (priv->btmrvl_dev.hsmode) {
331 ret = btmrvl_enable_hs(priv);
332 } else {
333 ret = priv->hw_wakeup_firmware(priv);
334 priv->adapter->hs_state = HS_DEACTIVATED;
335 }
336 }
337
338 return ret;
339}
340
341static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
342{
343 int ret = 0;
344
345 if (!skb || !skb->data)
346 return -EINVAL;
347
348 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
349 BT_ERR("Tx Error: Bad skb length %d : %d",
350 skb->len, BTM_UPLD_SIZE);
351 return -EINVAL;
352 }
353
354 if (skb_headroom(skb) < BTM_HEADER_LEN) {
355 struct sk_buff *tmp = skb;
356
357 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
358 if (!skb) {
359 BT_ERR("Tx Error: realloc_headroom failed %d",
360 BTM_HEADER_LEN);
361 skb = tmp;
362 return -EINVAL;
363 }
364
365 kfree_skb(tmp);
366 }
367
368 skb_push(skb, BTM_HEADER_LEN);
369
370 /* header type: byte[3]
371 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
372 * header length: byte[2][1][0]
373 */
374
375 skb->data[0] = (skb->len & 0x0000ff);
376 skb->data[1] = (skb->len & 0x00ff00) >> 8;
377 skb->data[2] = (skb->len & 0xff0000) >> 16;
378 skb->data[3] = bt_cb(skb)->pkt_type;
379
380 if (priv->hw_host_to_card)
381 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
382
383 return ret;
384}
385
386static void btmrvl_init_adapter(struct btmrvl_private *priv)
387{
388 skb_queue_head_init(&priv->adapter->tx_queue);
389
390 priv->adapter->ps_state = PS_AWAKE;
391
392 init_waitqueue_head(&priv->adapter->cmd_wait_q);
393}
394
395static void btmrvl_free_adapter(struct btmrvl_private *priv)
396{
397 skb_queue_purge(&priv->adapter->tx_queue);
398
399 kfree(priv->adapter);
400
401 priv->adapter = NULL;
402}
403
404static int btmrvl_ioctl(struct hci_dev *hdev,
405 unsigned int cmd, unsigned long arg)
406{
407 return -ENOIOCTLCMD;
408}
409
410static int btmrvl_send_frame(struct sk_buff *skb)
411{
412 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
413 struct btmrvl_private *priv = NULL;
414
415 BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
416
417 if (!hdev) {
418 BT_ERR("Frame for unknown HCI device");
419 return -ENODEV;
420 }
421
422 priv = hci_get_drvdata(hdev);
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
452static 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
461static 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
473static int btmrvl_open(struct hci_dev *hdev)
474{
475 set_bit(HCI_RUNNING, &hdev->flags);
476
477 return 0;
478}
479
480/*
481 * This function handles the event generated by firmware, rx data
482 * received from firmware, and tx data sent from kernel.
483 */
484static int btmrvl_service_main_thread(void *data)
485{
486 struct btmrvl_thread *thread = data;
487 struct btmrvl_private *priv = thread->priv;
488 struct btmrvl_adapter *adapter = priv->adapter;
489 wait_queue_t wait;
490 struct sk_buff *skb;
491 ulong flags;
492
493 init_waitqueue_entry(&wait, current);
494
495 for (;;) {
496 add_wait_queue(&thread->wait_q, &wait);
497
498 set_current_state(TASK_INTERRUPTIBLE);
499
500 if (adapter->wakeup_tries ||
501 ((!adapter->int_count) &&
502 (!priv->btmrvl_dev.tx_dnld_rdy ||
503 skb_queue_empty(&adapter->tx_queue)))) {
504 BT_DBG("main_thread is sleeping...");
505 schedule();
506 }
507
508 set_current_state(TASK_RUNNING);
509
510 remove_wait_queue(&thread->wait_q, &wait);
511
512 BT_DBG("main_thread woke up");
513
514 if (kthread_should_stop()) {
515 BT_DBG("main_thread: break from main thread");
516 break;
517 }
518
519 spin_lock_irqsave(&priv->driver_lock, flags);
520 if (adapter->int_count) {
521 adapter->int_count = 0;
522 spin_unlock_irqrestore(&priv->driver_lock, flags);
523 priv->hw_process_int_status(priv);
524 } else if (adapter->ps_state == PS_SLEEP &&
525 !skb_queue_empty(&adapter->tx_queue)) {
526 spin_unlock_irqrestore(&priv->driver_lock, flags);
527 adapter->wakeup_tries++;
528 priv->hw_wakeup_firmware(priv);
529 continue;
530 } else {
531 spin_unlock_irqrestore(&priv->driver_lock, flags);
532 }
533
534 if (adapter->ps_state == PS_SLEEP)
535 continue;
536
537 if (!priv->btmrvl_dev.tx_dnld_rdy)
538 continue;
539
540 skb = skb_dequeue(&adapter->tx_queue);
541 if (skb) {
542 if (btmrvl_tx_pkt(priv, skb))
543 priv->btmrvl_dev.hcidev->stat.err_tx++;
544 else
545 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
546
547 kfree_skb(skb);
548 }
549 }
550
551 return 0;
552}
553
554int btmrvl_register_hdev(struct btmrvl_private *priv)
555{
556 struct hci_dev *hdev = NULL;
557 int ret;
558
559 hdev = hci_alloc_dev();
560 if (!hdev) {
561 BT_ERR("Can not allocate HCI device");
562 goto err_hdev;
563 }
564
565 priv->btmrvl_dev.hcidev = hdev;
566 hci_set_drvdata(hdev, priv);
567
568 hdev->bus = HCI_SDIO;
569 hdev->open = btmrvl_open;
570 hdev->close = btmrvl_close;
571 hdev->flush = btmrvl_flush;
572 hdev->send = btmrvl_send_frame;
573 hdev->ioctl = btmrvl_ioctl;
574
575 btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
576
577 hdev->dev_type = priv->btmrvl_dev.dev_type;
578
579 ret = hci_register_dev(hdev);
580 if (ret < 0) {
581 BT_ERR("Can not register HCI device");
582 goto err_hci_register_dev;
583 }
584
585#ifdef CONFIG_DEBUG_FS
586 btmrvl_debugfs_init(hdev);
587#endif
588
589 return 0;
590
591err_hci_register_dev:
592 hci_free_dev(hdev);
593
594err_hdev:
595 /* Stop the thread servicing the interrupts */
596 kthread_stop(priv->main_thread.task);
597
598 btmrvl_free_adapter(priv);
599 kfree(priv);
600
601 return -ENOMEM;
602}
603EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
604
605struct btmrvl_private *btmrvl_add_card(void *card)
606{
607 struct btmrvl_private *priv;
608
609 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
610 if (!priv) {
611 BT_ERR("Can not allocate priv");
612 goto err_priv;
613 }
614
615 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
616 if (!priv->adapter) {
617 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
618 goto err_adapter;
619 }
620
621 btmrvl_init_adapter(priv);
622
623 BT_DBG("Starting kthread...");
624 priv->main_thread.priv = priv;
625 spin_lock_init(&priv->driver_lock);
626
627 init_waitqueue_head(&priv->main_thread.wait_q);
628 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
629 &priv->main_thread, "btmrvl_main_service");
630
631 priv->btmrvl_dev.card = card;
632 priv->btmrvl_dev.tx_dnld_rdy = true;
633
634 return priv;
635
636err_adapter:
637 kfree(priv);
638
639err_priv:
640 return NULL;
641}
642EXPORT_SYMBOL_GPL(btmrvl_add_card);
643
644int btmrvl_remove_card(struct btmrvl_private *priv)
645{
646 struct hci_dev *hdev;
647
648 hdev = priv->btmrvl_dev.hcidev;
649
650 wake_up_interruptible(&priv->adapter->cmd_wait_q);
651
652 kthread_stop(priv->main_thread.task);
653
654#ifdef CONFIG_DEBUG_FS
655 btmrvl_debugfs_remove(hdev);
656#endif
657
658 hci_unregister_dev(hdev);
659
660 hci_free_dev(hdev);
661
662 priv->btmrvl_dev.hcidev = NULL;
663
664 btmrvl_free_adapter(priv);
665
666 kfree(priv);
667
668 return 0;
669}
670EXPORT_SYMBOL_GPL(btmrvl_remove_card);
671
672MODULE_AUTHOR("Marvell International Ltd.");
673MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
674MODULE_VERSION(VERSION);
675MODULE_LICENSE("GPL v2");