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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// 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 } else if (priv->btmrvl_dev.sendcmdflag &&
125 event->data[1] == MODULE_SHUTDOWN_REQ) {
126 BT_DBG("EVENT:%s", (event->data[2]) ?
127 "Shutdown failed" : "Shutdown succeed");
128 } else {
129 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
130 ret = -EINVAL;
131 }
132 break;
133
134 case BT_EVENT_POWER_STATE:
135 if (event->data[1] == BT_PS_SLEEP)
136 adapter->ps_state = PS_SLEEP;
137 BT_DBG("EVENT:%s",
138 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
139 break;
140
141 default:
142 BT_DBG("Unknown Event=%d", event->data[0]);
143 ret = -EINVAL;
144 break;
145 }
146
147exit:
148 if (!ret)
149 kfree_skb(skb);
150
151 return ret;
152}
153EXPORT_SYMBOL_GPL(btmrvl_process_event);
154
155static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
156 const void *param, u8 len)
157{
158 struct sk_buff *skb;
159 struct hci_command_hdr *hdr;
160
161 if (priv->surprise_removed) {
162 BT_ERR("Card is removed");
163 return -EFAULT;
164 }
165
166 skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_KERNEL);
167 if (!skb) {
168 BT_ERR("No free skb");
169 return -ENOMEM;
170 }
171
172 hdr = skb_put(skb, HCI_COMMAND_HDR_SIZE);
173 hdr->opcode = cpu_to_le16(opcode);
174 hdr->plen = len;
175
176 if (len)
177 skb_put_data(skb, param, len);
178
179 hci_skb_pkt_type(skb) = MRVL_VENDOR_PKT;
180
181 skb_queue_head(&priv->adapter->tx_queue, skb);
182
183 priv->btmrvl_dev.sendcmdflag = true;
184
185 priv->adapter->cmd_complete = false;
186
187 wake_up_interruptible(&priv->main_thread.wait_q);
188
189 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
190 priv->adapter->cmd_complete ||
191 priv->surprise_removed,
192 WAIT_UNTIL_CMD_RESP))
193 return -ETIMEDOUT;
194
195 if (priv->surprise_removed)
196 return -EFAULT;
197
198 return 0;
199}
200
201int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd)
202{
203 int ret;
204
205 ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
206 if (ret)
207 BT_ERR("module_cfg_cmd(%x) failed", subcmd);
208
209 return ret;
210}
211EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
212
213static int btmrvl_enable_sco_routing_to_host(struct btmrvl_private *priv)
214{
215 int ret;
216 u8 subcmd = 0;
217
218 ret = btmrvl_send_sync_cmd(priv, BT_CMD_ROUTE_SCO_TO_HOST, &subcmd, 1);
219 if (ret)
220 BT_ERR("BT_CMD_ROUTE_SCO_TO_HOST command failed: %#x", ret);
221
222 return ret;
223}
224
225int btmrvl_pscan_window_reporting(struct btmrvl_private *priv, u8 subcmd)
226{
227 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
228 int ret;
229
230 if (!card->support_pscan_win_report)
231 return 0;
232
233 ret = btmrvl_send_sync_cmd(priv, BT_CMD_PSCAN_WIN_REPORT_ENABLE,
234 &subcmd, 1);
235 if (ret)
236 BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret);
237
238 return ret;
239}
240EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting);
241
242int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
243{
244 int ret;
245 u8 param[2];
246
247 param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
248 param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
249
250 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
251 param[0], param[1]);
252
253 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
254 if (ret)
255 BT_ERR("HSCFG command failed");
256
257 return ret;
258}
259EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
260
261int btmrvl_enable_ps(struct btmrvl_private *priv)
262{
263 int ret;
264 u8 param;
265
266 if (priv->btmrvl_dev.psmode)
267 param = BT_PS_ENABLE;
268 else
269 param = BT_PS_DISABLE;
270
271 ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, ¶m, 1);
272 if (ret)
273 BT_ERR("PSMODE command failed");
274
275 return 0;
276}
277EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
278
279int btmrvl_enable_hs(struct btmrvl_private *priv)
280{
281 struct btmrvl_adapter *adapter = priv->adapter;
282 int ret;
283
284 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
285 if (ret) {
286 BT_ERR("Host sleep enable command failed");
287 return ret;
288 }
289
290 ret = wait_event_interruptible_timeout(adapter->event_hs_wait_q,
291 adapter->hs_state ||
292 priv->surprise_removed,
293 WAIT_UNTIL_HS_STATE_CHANGED);
294 if (ret < 0 || priv->surprise_removed) {
295 BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d",
296 ret, adapter->hs_state, adapter->ps_state,
297 adapter->wakeup_tries);
298 } else if (!ret) {
299 BT_ERR("hs_enable timeout: %d,%d,%d", adapter->hs_state,
300 adapter->ps_state, adapter->wakeup_tries);
301 ret = -ETIMEDOUT;
302 } else {
303 BT_DBG("host sleep enabled: %d,%d,%d", adapter->hs_state,
304 adapter->ps_state, adapter->wakeup_tries);
305 ret = 0;
306 }
307
308 return ret;
309}
310EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
311
312int btmrvl_prepare_command(struct btmrvl_private *priv)
313{
314 int ret = 0;
315
316 if (priv->btmrvl_dev.hscfgcmd) {
317 priv->btmrvl_dev.hscfgcmd = 0;
318 btmrvl_send_hscfg_cmd(priv);
319 }
320
321 if (priv->btmrvl_dev.pscmd) {
322 priv->btmrvl_dev.pscmd = 0;
323 btmrvl_enable_ps(priv);
324 }
325
326 if (priv->btmrvl_dev.hscmd) {
327 priv->btmrvl_dev.hscmd = 0;
328
329 if (priv->btmrvl_dev.hsmode) {
330 ret = btmrvl_enable_hs(priv);
331 } else {
332 ret = priv->hw_wakeup_firmware(priv);
333 priv->adapter->hs_state = HS_DEACTIVATED;
334 BT_DBG("BT: HS DEACTIVATED due to host activity!");
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 skb_push(skb, BTM_HEADER_LEN);
355
356 /* header type: byte[3]
357 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
358 * header length: byte[2][1][0]
359 */
360
361 skb->data[0] = (skb->len & 0x0000ff);
362 skb->data[1] = (skb->len & 0x00ff00) >> 8;
363 skb->data[2] = (skb->len & 0xff0000) >> 16;
364 skb->data[3] = hci_skb_pkt_type(skb);
365
366 if (priv->hw_host_to_card)
367 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
368
369 return ret;
370}
371
372static void btmrvl_init_adapter(struct btmrvl_private *priv)
373{
374 int buf_size;
375
376 skb_queue_head_init(&priv->adapter->tx_queue);
377
378 priv->adapter->ps_state = PS_AWAKE;
379
380 buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
381 priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
382 if (!priv->adapter->hw_regs_buf) {
383 priv->adapter->hw_regs = NULL;
384 BT_ERR("Unable to allocate buffer for hw_regs.");
385 } else {
386 priv->adapter->hw_regs =
387 (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
388 BTSDIO_DMA_ALIGN);
389 BT_DBG("hw_regs_buf=%p hw_regs=%p",
390 priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
391 }
392
393 init_waitqueue_head(&priv->adapter->cmd_wait_q);
394 init_waitqueue_head(&priv->adapter->event_hs_wait_q);
395}
396
397static void btmrvl_free_adapter(struct btmrvl_private *priv)
398{
399 skb_queue_purge(&priv->adapter->tx_queue);
400
401 kfree(priv->adapter->hw_regs_buf);
402 kfree(priv->adapter);
403
404 priv->adapter = NULL;
405}
406
407static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
408{
409 struct btmrvl_private *priv = hci_get_drvdata(hdev);
410
411 BT_DBG("type=%d, len=%d", hci_skb_pkt_type(skb), skb->len);
412
413 if (priv->adapter->is_suspending || priv->adapter->is_suspended) {
414 BT_ERR("%s: Device is suspending or suspended", __func__);
415 return -EBUSY;
416 }
417
418 switch (hci_skb_pkt_type(skb)) {
419 case HCI_COMMAND_PKT:
420 hdev->stat.cmd_tx++;
421 break;
422
423 case HCI_ACLDATA_PKT:
424 hdev->stat.acl_tx++;
425 break;
426
427 case HCI_SCODATA_PKT:
428 hdev->stat.sco_tx++;
429 break;
430 }
431
432 skb_queue_tail(&priv->adapter->tx_queue, skb);
433
434 if (!priv->adapter->is_suspended)
435 wake_up_interruptible(&priv->main_thread.wait_q);
436
437 return 0;
438}
439
440static int btmrvl_flush(struct hci_dev *hdev)
441{
442 struct btmrvl_private *priv = hci_get_drvdata(hdev);
443
444 skb_queue_purge(&priv->adapter->tx_queue);
445
446 return 0;
447}
448
449static int btmrvl_close(struct hci_dev *hdev)
450{
451 struct btmrvl_private *priv = hci_get_drvdata(hdev);
452
453 skb_queue_purge(&priv->adapter->tx_queue);
454
455 return 0;
456}
457
458static int btmrvl_open(struct hci_dev *hdev)
459{
460 return 0;
461}
462
463static int btmrvl_download_cal_data(struct btmrvl_private *priv,
464 u8 *data, int len)
465{
466 int ret;
467
468 data[0] = 0x00;
469 data[1] = 0x00;
470 data[2] = 0x00;
471 data[3] = len;
472
473 print_hex_dump_bytes("Calibration data: ",
474 DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
475
476 ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
477 BT_CAL_HDR_LEN + len);
478 if (ret)
479 BT_ERR("Failed to download calibration data");
480
481 return 0;
482}
483
484static int btmrvl_check_device_tree(struct btmrvl_private *priv)
485{
486 struct device_node *dt_node;
487 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
488 u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
489 int ret = 0;
490 u16 gpio, gap;
491
492 if (card->plt_of_node) {
493 dt_node = card->plt_of_node;
494 ret = of_property_read_u16(dt_node, "marvell,wakeup-pin",
495 &gpio);
496 if (ret)
497 gpio = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
498
499 ret = of_property_read_u16(dt_node, "marvell,wakeup-gap-ms",
500 &gap);
501 if (ret)
502 gap = (u8)(priv->btmrvl_dev.gpio_gap & 0x00ff);
503
504 priv->btmrvl_dev.gpio_gap = (gpio << 8) + gap;
505
506 ret = of_property_read_u8_array(dt_node, "marvell,cal-data",
507 cal_data + BT_CAL_HDR_LEN,
508 BT_CAL_DATA_SIZE);
509 if (ret)
510 return ret;
511
512 BT_DBG("Use cal data from device tree");
513 ret = btmrvl_download_cal_data(priv, cal_data,
514 BT_CAL_DATA_SIZE);
515 if (ret)
516 BT_ERR("Fail to download calibrate data");
517 }
518
519 return ret;
520}
521
522static int btmrvl_setup(struct hci_dev *hdev)
523{
524 struct btmrvl_private *priv = hci_get_drvdata(hdev);
525 int ret;
526
527 ret = btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
528 if (ret)
529 return ret;
530
531 priv->btmrvl_dev.gpio_gap = 0xfffe;
532
533 btmrvl_check_device_tree(priv);
534
535 btmrvl_enable_sco_routing_to_host(priv);
536
537 btmrvl_pscan_window_reporting(priv, 0x01);
538
539 priv->btmrvl_dev.psmode = 1;
540 btmrvl_enable_ps(priv);
541
542 btmrvl_send_hscfg_cmd(priv);
543
544 return 0;
545}
546
547static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
548{
549 struct sk_buff *skb;
550 long ret;
551 u8 buf[8];
552
553 buf[0] = MRVL_VENDOR_PKT;
554 buf[1] = sizeof(bdaddr_t);
555 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
556
557 skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf,
558 HCI_INIT_TIMEOUT);
559 if (IS_ERR(skb)) {
560 ret = PTR_ERR(skb);
561 BT_ERR("%s: changing btmrvl device address failed (%ld)",
562 hdev->name, ret);
563 return ret;
564 }
565 kfree_skb(skb);
566
567 return 0;
568}
569
570static bool btmrvl_wakeup(struct hci_dev *hdev)
571{
572 struct btmrvl_private *priv = hci_get_drvdata(hdev);
573 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
574
575 return device_may_wakeup(&card->func->dev);
576}
577
578/*
579 * This function handles the event generated by firmware, rx data
580 * received from firmware, and tx data sent from kernel.
581 */
582static int btmrvl_service_main_thread(void *data)
583{
584 struct btmrvl_thread *thread = data;
585 struct btmrvl_private *priv = thread->priv;
586 struct btmrvl_adapter *adapter = priv->adapter;
587 wait_queue_entry_t wait;
588 struct sk_buff *skb;
589 ulong flags;
590
591 init_waitqueue_entry(&wait, current);
592
593 for (;;) {
594 add_wait_queue(&thread->wait_q, &wait);
595
596 set_current_state(TASK_INTERRUPTIBLE);
597 if (kthread_should_stop() || priv->surprise_removed) {
598 BT_DBG("main_thread: break from main thread");
599 break;
600 }
601
602 if (adapter->wakeup_tries ||
603 ((!adapter->int_count) &&
604 (!priv->btmrvl_dev.tx_dnld_rdy ||
605 skb_queue_empty(&adapter->tx_queue)))) {
606 BT_DBG("main_thread is sleeping...");
607 schedule();
608 }
609
610 set_current_state(TASK_RUNNING);
611
612 remove_wait_queue(&thread->wait_q, &wait);
613
614 BT_DBG("main_thread woke up");
615
616 if (kthread_should_stop() || priv->surprise_removed) {
617 BT_DBG("main_thread: break from main thread");
618 break;
619 }
620
621 spin_lock_irqsave(&priv->driver_lock, flags);
622 if (adapter->int_count) {
623 adapter->int_count = 0;
624 spin_unlock_irqrestore(&priv->driver_lock, flags);
625 priv->hw_process_int_status(priv);
626 } else if (adapter->ps_state == PS_SLEEP &&
627 !skb_queue_empty(&adapter->tx_queue)) {
628 spin_unlock_irqrestore(&priv->driver_lock, flags);
629 adapter->wakeup_tries++;
630 priv->hw_wakeup_firmware(priv);
631 continue;
632 } else {
633 spin_unlock_irqrestore(&priv->driver_lock, flags);
634 }
635
636 if (adapter->ps_state == PS_SLEEP)
637 continue;
638
639 if (!priv->btmrvl_dev.tx_dnld_rdy ||
640 priv->adapter->is_suspended)
641 continue;
642
643 skb = skb_dequeue(&adapter->tx_queue);
644 if (skb) {
645 if (btmrvl_tx_pkt(priv, skb))
646 priv->btmrvl_dev.hcidev->stat.err_tx++;
647 else
648 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
649
650 kfree_skb(skb);
651 }
652 }
653
654 return 0;
655}
656
657int btmrvl_register_hdev(struct btmrvl_private *priv)
658{
659 struct hci_dev *hdev = NULL;
660 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
661 int ret;
662
663 hdev = hci_alloc_dev();
664 if (!hdev) {
665 BT_ERR("Can not allocate HCI device");
666 goto err_hdev;
667 }
668
669 priv->btmrvl_dev.hcidev = hdev;
670 hci_set_drvdata(hdev, priv);
671
672 hdev->bus = HCI_SDIO;
673 hdev->open = btmrvl_open;
674 hdev->close = btmrvl_close;
675 hdev->flush = btmrvl_flush;
676 hdev->send = btmrvl_send_frame;
677 hdev->setup = btmrvl_setup;
678 hdev->set_bdaddr = btmrvl_set_bdaddr;
679 hdev->wakeup = btmrvl_wakeup;
680 SET_HCIDEV_DEV(hdev, &card->func->dev);
681
682 ret = hci_register_dev(hdev);
683 if (ret < 0) {
684 BT_ERR("Can not register HCI device");
685 goto err_hci_register_dev;
686 }
687
688#ifdef CONFIG_DEBUG_FS
689 btmrvl_debugfs_init(hdev);
690#endif
691
692 return 0;
693
694err_hci_register_dev:
695 hci_free_dev(hdev);
696
697err_hdev:
698 /* Stop the thread servicing the interrupts */
699 kthread_stop(priv->main_thread.task);
700
701 btmrvl_free_adapter(priv);
702 kfree(priv);
703
704 return -ENOMEM;
705}
706EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
707
708struct btmrvl_private *btmrvl_add_card(void *card)
709{
710 struct btmrvl_private *priv;
711
712 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
713 if (!priv) {
714 BT_ERR("Can not allocate priv");
715 goto err_priv;
716 }
717
718 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
719 if (!priv->adapter) {
720 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
721 goto err_adapter;
722 }
723
724 btmrvl_init_adapter(priv);
725
726 BT_DBG("Starting kthread...");
727 priv->main_thread.priv = priv;
728 spin_lock_init(&priv->driver_lock);
729
730 init_waitqueue_head(&priv->main_thread.wait_q);
731 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
732 &priv->main_thread, "btmrvl_main_service");
733 if (IS_ERR(priv->main_thread.task))
734 goto err_thread;
735
736 priv->btmrvl_dev.card = card;
737 priv->btmrvl_dev.tx_dnld_rdy = true;
738
739 return priv;
740
741err_thread:
742 btmrvl_free_adapter(priv);
743
744err_adapter:
745 kfree(priv);
746
747err_priv:
748 return NULL;
749}
750EXPORT_SYMBOL_GPL(btmrvl_add_card);
751
752int btmrvl_remove_card(struct btmrvl_private *priv)
753{
754 struct hci_dev *hdev;
755
756 hdev = priv->btmrvl_dev.hcidev;
757
758 wake_up_interruptible(&priv->adapter->cmd_wait_q);
759 wake_up_interruptible(&priv->adapter->event_hs_wait_q);
760
761 kthread_stop(priv->main_thread.task);
762
763#ifdef CONFIG_DEBUG_FS
764 btmrvl_debugfs_remove(hdev);
765#endif
766
767 hci_unregister_dev(hdev);
768
769 hci_free_dev(hdev);
770
771 priv->btmrvl_dev.hcidev = NULL;
772
773 btmrvl_free_adapter(priv);
774
775 kfree(priv);
776
777 return 0;
778}
779EXPORT_SYMBOL_GPL(btmrvl_remove_card);
780
781MODULE_AUTHOR("Marvell International Ltd.");
782MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
783MODULE_VERSION(VERSION);
784MODULE_LICENSE("GPL v2");