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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_BREDR;
142
143 BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
144 } else if (priv->btmrvl_dev.sendcmdflag &&
145 event->data[1] == MODULE_SHUTDOWN_REQ) {
146 BT_DBG("EVENT:%s", (event->data[2]) ?
147 "Shutdown failed" : "Shutdown succeed");
148 } else {
149 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
150 ret = -EINVAL;
151 }
152 break;
153
154 case BT_EVENT_POWER_STATE:
155 if (event->data[1] == BT_PS_SLEEP)
156 adapter->ps_state = PS_SLEEP;
157 BT_DBG("EVENT:%s",
158 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
159 break;
160
161 default:
162 BT_DBG("Unknown Event=%d", event->data[0]);
163 ret = -EINVAL;
164 break;
165 }
166
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_ATOMIC);
187 if (!skb) {
188 BT_ERR("No free skb");
189 return -ENOMEM;
190 }
191
192 hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
193 hdr->opcode = cpu_to_le16(opcode);
194 hdr->plen = len;
195
196 if (len)
197 memcpy(skb_put(skb, len), 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, ¶m, 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
361void btmrvl_firmware_dump(struct btmrvl_private *priv)
362{
363 if (priv->firmware_dump)
364 priv->firmware_dump(priv);
365}
366
367static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
368{
369 int ret = 0;
370
371 if (!skb || !skb->data)
372 return -EINVAL;
373
374 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
375 BT_ERR("Tx Error: Bad skb length %d : %d",
376 skb->len, BTM_UPLD_SIZE);
377 return -EINVAL;
378 }
379
380 skb_push(skb, BTM_HEADER_LEN);
381
382 /* header type: byte[3]
383 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
384 * header length: byte[2][1][0]
385 */
386
387 skb->data[0] = (skb->len & 0x0000ff);
388 skb->data[1] = (skb->len & 0x00ff00) >> 8;
389 skb->data[2] = (skb->len & 0xff0000) >> 16;
390 skb->data[3] = hci_skb_pkt_type(skb);
391
392 if (priv->hw_host_to_card)
393 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
394
395 return ret;
396}
397
398static void btmrvl_init_adapter(struct btmrvl_private *priv)
399{
400 int buf_size;
401
402 skb_queue_head_init(&priv->adapter->tx_queue);
403
404 priv->adapter->ps_state = PS_AWAKE;
405
406 buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
407 priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
408 if (!priv->adapter->hw_regs_buf) {
409 priv->adapter->hw_regs = NULL;
410 BT_ERR("Unable to allocate buffer for hw_regs.");
411 } else {
412 priv->adapter->hw_regs =
413 (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
414 BTSDIO_DMA_ALIGN);
415 BT_DBG("hw_regs_buf=%p hw_regs=%p",
416 priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
417 }
418
419 init_waitqueue_head(&priv->adapter->cmd_wait_q);
420 init_waitqueue_head(&priv->adapter->event_hs_wait_q);
421}
422
423static void btmrvl_free_adapter(struct btmrvl_private *priv)
424{
425 skb_queue_purge(&priv->adapter->tx_queue);
426
427 kfree(priv->adapter->hw_regs_buf);
428 kfree(priv->adapter);
429
430 priv->adapter = NULL;
431}
432
433static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
434{
435 struct btmrvl_private *priv = hci_get_drvdata(hdev);
436
437 BT_DBG("type=%d, len=%d", hci_skb_pkt_type(skb), skb->len);
438
439 if (priv->adapter->is_suspending || priv->adapter->is_suspended) {
440 BT_ERR("%s: Device is suspending or suspended", __func__);
441 return -EBUSY;
442 }
443
444 switch (hci_skb_pkt_type(skb)) {
445 case HCI_COMMAND_PKT:
446 hdev->stat.cmd_tx++;
447 break;
448
449 case HCI_ACLDATA_PKT:
450 hdev->stat.acl_tx++;
451 break;
452
453 case HCI_SCODATA_PKT:
454 hdev->stat.sco_tx++;
455 break;
456 }
457
458 skb_queue_tail(&priv->adapter->tx_queue, skb);
459
460 if (!priv->adapter->is_suspended)
461 wake_up_interruptible(&priv->main_thread.wait_q);
462
463 return 0;
464}
465
466static int btmrvl_flush(struct hci_dev *hdev)
467{
468 struct btmrvl_private *priv = hci_get_drvdata(hdev);
469
470 skb_queue_purge(&priv->adapter->tx_queue);
471
472 return 0;
473}
474
475static int btmrvl_close(struct hci_dev *hdev)
476{
477 struct btmrvl_private *priv = hci_get_drvdata(hdev);
478
479 skb_queue_purge(&priv->adapter->tx_queue);
480
481 return 0;
482}
483
484static int btmrvl_open(struct hci_dev *hdev)
485{
486 return 0;
487}
488
489static int btmrvl_download_cal_data(struct btmrvl_private *priv,
490 u8 *data, int len)
491{
492 int ret;
493
494 data[0] = 0x00;
495 data[1] = 0x00;
496 data[2] = 0x00;
497 data[3] = len;
498
499 print_hex_dump_bytes("Calibration data: ",
500 DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
501
502 ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
503 BT_CAL_HDR_LEN + len);
504 if (ret)
505 BT_ERR("Failed to download caibration data");
506
507 return 0;
508}
509
510static int btmrvl_check_device_tree(struct btmrvl_private *priv)
511{
512 struct device_node *dt_node;
513 u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
514 int ret;
515 u32 val;
516
517 for_each_compatible_node(dt_node, NULL, "btmrvl,cfgdata") {
518 ret = of_property_read_u32(dt_node, "btmrvl,gpio-gap", &val);
519 if (!ret)
520 priv->btmrvl_dev.gpio_gap = val;
521
522 ret = of_property_read_u8_array(dt_node, "btmrvl,cal-data",
523 cal_data + BT_CAL_HDR_LEN,
524 BT_CAL_DATA_SIZE);
525 if (ret) {
526 of_node_put(dt_node);
527 return ret;
528 }
529
530 BT_DBG("Use cal data from device tree");
531 ret = btmrvl_download_cal_data(priv, cal_data,
532 BT_CAL_DATA_SIZE);
533 if (ret) {
534 BT_ERR("Fail to download calibrate data");
535 of_node_put(dt_node);
536 return ret;
537 }
538 }
539
540 return 0;
541}
542
543static int btmrvl_setup(struct hci_dev *hdev)
544{
545 struct btmrvl_private *priv = hci_get_drvdata(hdev);
546 int ret;
547
548 ret = btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
549 if (ret)
550 return ret;
551
552 priv->btmrvl_dev.gpio_gap = 0xfffe;
553
554 btmrvl_check_device_tree(priv);
555
556 btmrvl_enable_sco_routing_to_host(priv);
557
558 btmrvl_pscan_window_reporting(priv, 0x01);
559
560 priv->btmrvl_dev.psmode = 1;
561 btmrvl_enable_ps(priv);
562
563 btmrvl_send_hscfg_cmd(priv);
564
565 return 0;
566}
567
568static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
569{
570 struct sk_buff *skb;
571 long ret;
572 u8 buf[8];
573
574 buf[0] = MRVL_VENDOR_PKT;
575 buf[1] = sizeof(bdaddr_t);
576 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
577
578 skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf,
579 HCI_INIT_TIMEOUT);
580 if (IS_ERR(skb)) {
581 ret = PTR_ERR(skb);
582 BT_ERR("%s: changing btmrvl device address failed (%ld)",
583 hdev->name, ret);
584 return ret;
585 }
586 kfree_skb(skb);
587
588 return 0;
589}
590
591/*
592 * This function handles the event generated by firmware, rx data
593 * received from firmware, and tx data sent from kernel.
594 */
595static int btmrvl_service_main_thread(void *data)
596{
597 struct btmrvl_thread *thread = data;
598 struct btmrvl_private *priv = thread->priv;
599 struct btmrvl_adapter *adapter = priv->adapter;
600 wait_queue_t wait;
601 struct sk_buff *skb;
602 ulong flags;
603
604 init_waitqueue_entry(&wait, current);
605
606 for (;;) {
607 add_wait_queue(&thread->wait_q, &wait);
608
609 set_current_state(TASK_INTERRUPTIBLE);
610 if (kthread_should_stop() || priv->surprise_removed) {
611 BT_DBG("main_thread: break from main thread");
612 break;
613 }
614
615 if (adapter->wakeup_tries ||
616 ((!adapter->int_count) &&
617 (!priv->btmrvl_dev.tx_dnld_rdy ||
618 skb_queue_empty(&adapter->tx_queue)))) {
619 BT_DBG("main_thread is sleeping...");
620 schedule();
621 }
622
623 set_current_state(TASK_RUNNING);
624
625 remove_wait_queue(&thread->wait_q, &wait);
626
627 BT_DBG("main_thread woke up");
628
629 if (kthread_should_stop() || priv->surprise_removed) {
630 BT_DBG("main_thread: break from main thread");
631 break;
632 }
633
634 spin_lock_irqsave(&priv->driver_lock, flags);
635 if (adapter->int_count) {
636 adapter->int_count = 0;
637 spin_unlock_irqrestore(&priv->driver_lock, flags);
638 priv->hw_process_int_status(priv);
639 } else if (adapter->ps_state == PS_SLEEP &&
640 !skb_queue_empty(&adapter->tx_queue)) {
641 spin_unlock_irqrestore(&priv->driver_lock, flags);
642 adapter->wakeup_tries++;
643 priv->hw_wakeup_firmware(priv);
644 continue;
645 } else {
646 spin_unlock_irqrestore(&priv->driver_lock, flags);
647 }
648
649 if (adapter->ps_state == PS_SLEEP)
650 continue;
651
652 if (!priv->btmrvl_dev.tx_dnld_rdy ||
653 priv->adapter->is_suspended)
654 continue;
655
656 skb = skb_dequeue(&adapter->tx_queue);
657 if (skb) {
658 if (btmrvl_tx_pkt(priv, skb))
659 priv->btmrvl_dev.hcidev->stat.err_tx++;
660 else
661 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
662
663 kfree_skb(skb);
664 }
665 }
666
667 return 0;
668}
669
670int btmrvl_register_hdev(struct btmrvl_private *priv)
671{
672 struct hci_dev *hdev = NULL;
673 int ret;
674
675 hdev = hci_alloc_dev();
676 if (!hdev) {
677 BT_ERR("Can not allocate HCI device");
678 goto err_hdev;
679 }
680
681 priv->btmrvl_dev.hcidev = hdev;
682 hci_set_drvdata(hdev, priv);
683
684 hdev->bus = HCI_SDIO;
685 hdev->open = btmrvl_open;
686 hdev->close = btmrvl_close;
687 hdev->flush = btmrvl_flush;
688 hdev->send = btmrvl_send_frame;
689 hdev->setup = btmrvl_setup;
690 hdev->set_bdaddr = btmrvl_set_bdaddr;
691
692 hdev->dev_type = priv->btmrvl_dev.dev_type;
693
694 ret = hci_register_dev(hdev);
695 if (ret < 0) {
696 BT_ERR("Can not register HCI device");
697 goto err_hci_register_dev;
698 }
699
700#ifdef CONFIG_DEBUG_FS
701 btmrvl_debugfs_init(hdev);
702#endif
703
704 return 0;
705
706err_hci_register_dev:
707 hci_free_dev(hdev);
708
709err_hdev:
710 /* Stop the thread servicing the interrupts */
711 kthread_stop(priv->main_thread.task);
712
713 btmrvl_free_adapter(priv);
714 kfree(priv);
715
716 return -ENOMEM;
717}
718EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
719
720struct btmrvl_private *btmrvl_add_card(void *card)
721{
722 struct btmrvl_private *priv;
723
724 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
725 if (!priv) {
726 BT_ERR("Can not allocate priv");
727 goto err_priv;
728 }
729
730 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
731 if (!priv->adapter) {
732 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
733 goto err_adapter;
734 }
735
736 btmrvl_init_adapter(priv);
737
738 BT_DBG("Starting kthread...");
739 priv->main_thread.priv = priv;
740 spin_lock_init(&priv->driver_lock);
741
742 init_waitqueue_head(&priv->main_thread.wait_q);
743 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
744 &priv->main_thread, "btmrvl_main_service");
745 if (IS_ERR(priv->main_thread.task))
746 goto err_thread;
747
748 priv->btmrvl_dev.card = card;
749 priv->btmrvl_dev.tx_dnld_rdy = true;
750
751 return priv;
752
753err_thread:
754 btmrvl_free_adapter(priv);
755
756err_adapter:
757 kfree(priv);
758
759err_priv:
760 return NULL;
761}
762EXPORT_SYMBOL_GPL(btmrvl_add_card);
763
764int btmrvl_remove_card(struct btmrvl_private *priv)
765{
766 struct hci_dev *hdev;
767
768 hdev = priv->btmrvl_dev.hcidev;
769
770 wake_up_interruptible(&priv->adapter->cmd_wait_q);
771 wake_up_interruptible(&priv->adapter->event_hs_wait_q);
772
773 kthread_stop(priv->main_thread.task);
774
775#ifdef CONFIG_DEBUG_FS
776 btmrvl_debugfs_remove(hdev);
777#endif
778
779 hci_unregister_dev(hdev);
780
781 hci_free_dev(hdev);
782
783 priv->btmrvl_dev.hcidev = NULL;
784
785 btmrvl_free_adapter(priv);
786
787 kfree(priv);
788
789 return 0;
790}
791EXPORT_SYMBOL_GPL(btmrvl_remove_card);
792
793MODULE_AUTHOR("Marvell International Ltd.");
794MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
795MODULE_VERSION(VERSION);
796MODULE_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#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_ATOMIC);
187 if (!skb) {
188 BT_ERR("No free skb");
189 return -ENOMEM;
190 }
191
192 hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
193 hdr->opcode = cpu_to_le16(opcode);
194 hdr->plen = len;
195
196 if (len)
197 memcpy(skb_put(skb, len), 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, ¶m, 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
361void btmrvl_firmware_dump(struct btmrvl_private *priv)
362{
363 if (priv->firmware_dump)
364 priv->firmware_dump(priv);
365}
366
367static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
368{
369 int ret = 0;
370
371 if (!skb || !skb->data)
372 return -EINVAL;
373
374 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
375 BT_ERR("Tx Error: Bad skb length %d : %d",
376 skb->len, BTM_UPLD_SIZE);
377 return -EINVAL;
378 }
379
380 skb_push(skb, BTM_HEADER_LEN);
381
382 /* header type: byte[3]
383 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
384 * header length: byte[2][1][0]
385 */
386
387 skb->data[0] = (skb->len & 0x0000ff);
388 skb->data[1] = (skb->len & 0x00ff00) >> 8;
389 skb->data[2] = (skb->len & 0xff0000) >> 16;
390 skb->data[3] = hci_skb_pkt_type(skb);
391
392 if (priv->hw_host_to_card)
393 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
394
395 return ret;
396}
397
398static void btmrvl_init_adapter(struct btmrvl_private *priv)
399{
400 int buf_size;
401
402 skb_queue_head_init(&priv->adapter->tx_queue);
403
404 priv->adapter->ps_state = PS_AWAKE;
405
406 buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
407 priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
408 if (!priv->adapter->hw_regs_buf) {
409 priv->adapter->hw_regs = NULL;
410 BT_ERR("Unable to allocate buffer for hw_regs.");
411 } else {
412 priv->adapter->hw_regs =
413 (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
414 BTSDIO_DMA_ALIGN);
415 BT_DBG("hw_regs_buf=%p hw_regs=%p",
416 priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
417 }
418
419 init_waitqueue_head(&priv->adapter->cmd_wait_q);
420 init_waitqueue_head(&priv->adapter->event_hs_wait_q);
421}
422
423static void btmrvl_free_adapter(struct btmrvl_private *priv)
424{
425 skb_queue_purge(&priv->adapter->tx_queue);
426
427 kfree(priv->adapter->hw_regs_buf);
428 kfree(priv->adapter);
429
430 priv->adapter = NULL;
431}
432
433static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
434{
435 struct btmrvl_private *priv = hci_get_drvdata(hdev);
436
437 BT_DBG("type=%d, len=%d", hci_skb_pkt_type(skb), skb->len);
438
439 if (priv->adapter->is_suspending || priv->adapter->is_suspended) {
440 BT_ERR("%s: Device is suspending or suspended", __func__);
441 return -EBUSY;
442 }
443
444 switch (hci_skb_pkt_type(skb)) {
445 case HCI_COMMAND_PKT:
446 hdev->stat.cmd_tx++;
447 break;
448
449 case HCI_ACLDATA_PKT:
450 hdev->stat.acl_tx++;
451 break;
452
453 case HCI_SCODATA_PKT:
454 hdev->stat.sco_tx++;
455 break;
456 }
457
458 skb_queue_tail(&priv->adapter->tx_queue, skb);
459
460 if (!priv->adapter->is_suspended)
461 wake_up_interruptible(&priv->main_thread.wait_q);
462
463 return 0;
464}
465
466static int btmrvl_flush(struct hci_dev *hdev)
467{
468 struct btmrvl_private *priv = hci_get_drvdata(hdev);
469
470 skb_queue_purge(&priv->adapter->tx_queue);
471
472 return 0;
473}
474
475static int btmrvl_close(struct hci_dev *hdev)
476{
477 struct btmrvl_private *priv = hci_get_drvdata(hdev);
478
479 skb_queue_purge(&priv->adapter->tx_queue);
480
481 return 0;
482}
483
484static int btmrvl_open(struct hci_dev *hdev)
485{
486 return 0;
487}
488
489static int btmrvl_download_cal_data(struct btmrvl_private *priv,
490 u8 *data, int len)
491{
492 int ret;
493
494 data[0] = 0x00;
495 data[1] = 0x00;
496 data[2] = 0x00;
497 data[3] = len;
498
499 print_hex_dump_bytes("Calibration data: ",
500 DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
501
502 ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
503 BT_CAL_HDR_LEN + len);
504 if (ret)
505 BT_ERR("Failed to download caibration data");
506
507 return 0;
508}
509
510static int btmrvl_check_device_tree(struct btmrvl_private *priv)
511{
512 struct device_node *dt_node;
513 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
514 u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
515 int ret = 0;
516 u16 gpio, gap;
517
518 if (card->plt_of_node) {
519 dt_node = card->plt_of_node;
520 ret = of_property_read_u16(dt_node, "marvell,wakeup-pin",
521 &gpio);
522 if (ret)
523 gpio = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
524
525 ret = of_property_read_u16(dt_node, "marvell,wakeup-gap-ms",
526 &gap);
527 if (ret)
528 gap = (u8)(priv->btmrvl_dev.gpio_gap & 0x00ff);
529
530 priv->btmrvl_dev.gpio_gap = (gpio << 8) + gap;
531
532 ret = of_property_read_u8_array(dt_node, "marvell,cal-data",
533 cal_data + BT_CAL_HDR_LEN,
534 BT_CAL_DATA_SIZE);
535 if (ret)
536 return ret;
537
538 BT_DBG("Use cal data from device tree");
539 ret = btmrvl_download_cal_data(priv, cal_data,
540 BT_CAL_DATA_SIZE);
541 if (ret)
542 BT_ERR("Fail to download calibrate data");
543 }
544
545 return ret;
546}
547
548static int btmrvl_setup(struct hci_dev *hdev)
549{
550 struct btmrvl_private *priv = hci_get_drvdata(hdev);
551 int ret;
552
553 ret = btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
554 if (ret)
555 return ret;
556
557 priv->btmrvl_dev.gpio_gap = 0xfffe;
558
559 btmrvl_check_device_tree(priv);
560
561 btmrvl_enable_sco_routing_to_host(priv);
562
563 btmrvl_pscan_window_reporting(priv, 0x01);
564
565 priv->btmrvl_dev.psmode = 1;
566 btmrvl_enable_ps(priv);
567
568 btmrvl_send_hscfg_cmd(priv);
569
570 return 0;
571}
572
573static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
574{
575 struct sk_buff *skb;
576 long ret;
577 u8 buf[8];
578
579 buf[0] = MRVL_VENDOR_PKT;
580 buf[1] = sizeof(bdaddr_t);
581 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
582
583 skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf,
584 HCI_INIT_TIMEOUT);
585 if (IS_ERR(skb)) {
586 ret = PTR_ERR(skb);
587 BT_ERR("%s: changing btmrvl device address failed (%ld)",
588 hdev->name, ret);
589 return ret;
590 }
591 kfree_skb(skb);
592
593 return 0;
594}
595
596/*
597 * This function handles the event generated by firmware, rx data
598 * received from firmware, and tx data sent from kernel.
599 */
600static int btmrvl_service_main_thread(void *data)
601{
602 struct btmrvl_thread *thread = data;
603 struct btmrvl_private *priv = thread->priv;
604 struct btmrvl_adapter *adapter = priv->adapter;
605 wait_queue_t wait;
606 struct sk_buff *skb;
607 ulong flags;
608
609 init_waitqueue_entry(&wait, current);
610
611 for (;;) {
612 add_wait_queue(&thread->wait_q, &wait);
613
614 set_current_state(TASK_INTERRUPTIBLE);
615 if (kthread_should_stop() || priv->surprise_removed) {
616 BT_DBG("main_thread: break from main thread");
617 break;
618 }
619
620 if (adapter->wakeup_tries ||
621 ((!adapter->int_count) &&
622 (!priv->btmrvl_dev.tx_dnld_rdy ||
623 skb_queue_empty(&adapter->tx_queue)))) {
624 BT_DBG("main_thread is sleeping...");
625 schedule();
626 }
627
628 set_current_state(TASK_RUNNING);
629
630 remove_wait_queue(&thread->wait_q, &wait);
631
632 BT_DBG("main_thread woke up");
633
634 if (kthread_should_stop() || priv->surprise_removed) {
635 BT_DBG("main_thread: break from main thread");
636 break;
637 }
638
639 spin_lock_irqsave(&priv->driver_lock, flags);
640 if (adapter->int_count) {
641 adapter->int_count = 0;
642 spin_unlock_irqrestore(&priv->driver_lock, flags);
643 priv->hw_process_int_status(priv);
644 } else if (adapter->ps_state == PS_SLEEP &&
645 !skb_queue_empty(&adapter->tx_queue)) {
646 spin_unlock_irqrestore(&priv->driver_lock, flags);
647 adapter->wakeup_tries++;
648 priv->hw_wakeup_firmware(priv);
649 continue;
650 } else {
651 spin_unlock_irqrestore(&priv->driver_lock, flags);
652 }
653
654 if (adapter->ps_state == PS_SLEEP)
655 continue;
656
657 if (!priv->btmrvl_dev.tx_dnld_rdy ||
658 priv->adapter->is_suspended)
659 continue;
660
661 skb = skb_dequeue(&adapter->tx_queue);
662 if (skb) {
663 if (btmrvl_tx_pkt(priv, skb))
664 priv->btmrvl_dev.hcidev->stat.err_tx++;
665 else
666 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
667
668 kfree_skb(skb);
669 }
670 }
671
672 return 0;
673}
674
675int btmrvl_register_hdev(struct btmrvl_private *priv)
676{
677 struct hci_dev *hdev = NULL;
678 int ret;
679
680 hdev = hci_alloc_dev();
681 if (!hdev) {
682 BT_ERR("Can not allocate HCI device");
683 goto err_hdev;
684 }
685
686 priv->btmrvl_dev.hcidev = hdev;
687 hci_set_drvdata(hdev, priv);
688
689 hdev->bus = HCI_SDIO;
690 hdev->open = btmrvl_open;
691 hdev->close = btmrvl_close;
692 hdev->flush = btmrvl_flush;
693 hdev->send = btmrvl_send_frame;
694 hdev->setup = btmrvl_setup;
695 hdev->set_bdaddr = btmrvl_set_bdaddr;
696
697 hdev->dev_type = priv->btmrvl_dev.dev_type;
698
699 ret = hci_register_dev(hdev);
700 if (ret < 0) {
701 BT_ERR("Can not register HCI device");
702 goto err_hci_register_dev;
703 }
704
705#ifdef CONFIG_DEBUG_FS
706 btmrvl_debugfs_init(hdev);
707#endif
708
709 return 0;
710
711err_hci_register_dev:
712 hci_free_dev(hdev);
713
714err_hdev:
715 /* Stop the thread servicing the interrupts */
716 kthread_stop(priv->main_thread.task);
717
718 btmrvl_free_adapter(priv);
719 kfree(priv);
720
721 return -ENOMEM;
722}
723EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
724
725struct btmrvl_private *btmrvl_add_card(void *card)
726{
727 struct btmrvl_private *priv;
728
729 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
730 if (!priv) {
731 BT_ERR("Can not allocate priv");
732 goto err_priv;
733 }
734
735 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
736 if (!priv->adapter) {
737 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
738 goto err_adapter;
739 }
740
741 btmrvl_init_adapter(priv);
742
743 BT_DBG("Starting kthread...");
744 priv->main_thread.priv = priv;
745 spin_lock_init(&priv->driver_lock);
746
747 init_waitqueue_head(&priv->main_thread.wait_q);
748 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
749 &priv->main_thread, "btmrvl_main_service");
750 if (IS_ERR(priv->main_thread.task))
751 goto err_thread;
752
753 priv->btmrvl_dev.card = card;
754 priv->btmrvl_dev.tx_dnld_rdy = true;
755
756 return priv;
757
758err_thread:
759 btmrvl_free_adapter(priv);
760
761err_adapter:
762 kfree(priv);
763
764err_priv:
765 return NULL;
766}
767EXPORT_SYMBOL_GPL(btmrvl_add_card);
768
769int btmrvl_remove_card(struct btmrvl_private *priv)
770{
771 struct hci_dev *hdev;
772
773 hdev = priv->btmrvl_dev.hcidev;
774
775 wake_up_interruptible(&priv->adapter->cmd_wait_q);
776 wake_up_interruptible(&priv->adapter->event_hs_wait_q);
777
778 kthread_stop(priv->main_thread.task);
779
780#ifdef CONFIG_DEBUG_FS
781 btmrvl_debugfs_remove(hdev);
782#endif
783
784 hci_unregister_dev(hdev);
785
786 hci_free_dev(hdev);
787
788 priv->btmrvl_dev.hcidev = NULL;
789
790 btmrvl_free_adapter(priv);
791
792 kfree(priv);
793
794 return 0;
795}
796EXPORT_SYMBOL_GPL(btmrvl_remove_card);
797
798MODULE_AUTHOR("Marvell International Ltd.");
799MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
800MODULE_VERSION(VERSION);
801MODULE_LICENSE("GPL v2");