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 */
btmrvl_interrupt(struct btmrvl_private * priv)37 void btmrvl_interrupt(struct btmrvl_private *priv)
38 {
39 priv->adapter->ps_state = PS_AWAKE;
40
41 priv->adapter->wakeup_tries = 0;
42
43 priv->adapter->int_count++;
44
45 if (priv->adapter->hs_state == HS_ACTIVATED) {
46 BT_DBG("BT: HS DEACTIVATED in ISR!");
47 priv->adapter->hs_state = HS_DEACTIVATED;
48 }
49
50 wake_up_interruptible(&priv->main_thread.wait_q);
51 }
52 EXPORT_SYMBOL_GPL(btmrvl_interrupt);
53
btmrvl_check_evtpkt(struct btmrvl_private * priv,struct sk_buff * skb)54 bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
55 {
56 struct hci_event_hdr *hdr = (void *) skb->data;
57
58 if (hdr->evt == HCI_EV_CMD_COMPLETE) {
59 struct hci_ev_cmd_complete *ec;
60 u16 opcode;
61
62 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
63 opcode = __le16_to_cpu(ec->opcode);
64
65 if (priv->btmrvl_dev.sendcmdflag) {
66 priv->btmrvl_dev.sendcmdflag = false;
67 priv->adapter->cmd_complete = true;
68 wake_up_interruptible(&priv->adapter->cmd_wait_q);
69
70 if (hci_opcode_ogf(opcode) == 0x3F) {
71 BT_DBG("vendor event skipped: opcode=%#4.4x",
72 opcode);
73 kfree_skb(skb);
74 return false;
75 }
76 }
77 }
78
79 return true;
80 }
81 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
82
btmrvl_process_event(struct btmrvl_private * priv,struct sk_buff * skb)83 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
84 {
85 struct btmrvl_adapter *adapter = priv->adapter;
86 struct btmrvl_event *event;
87 int ret = 0;
88
89 event = (struct btmrvl_event *) skb->data;
90 if (event->ec != 0xff) {
91 BT_DBG("Not Marvell Event=%x", event->ec);
92 ret = -EINVAL;
93 goto exit;
94 }
95
96 switch (event->data[0]) {
97 case BT_EVENT_AUTO_SLEEP_MODE:
98 if (!event->data[2]) {
99 if (event->data[1] == BT_PS_ENABLE)
100 adapter->psmode = 1;
101 else
102 adapter->psmode = 0;
103 BT_DBG("PS Mode:%s",
104 (adapter->psmode) ? "Enable" : "Disable");
105 } else {
106 BT_DBG("PS Mode command failed");
107 }
108 break;
109
110 case BT_EVENT_HOST_SLEEP_CONFIG:
111 if (!event->data[3])
112 BT_DBG("gpio=%x, gap=%x", event->data[1],
113 event->data[2]);
114 else
115 BT_DBG("HSCFG command failed");
116 break;
117
118 case BT_EVENT_HOST_SLEEP_ENABLE:
119 if (!event->data[1]) {
120 adapter->hs_state = HS_ACTIVATED;
121 if (adapter->psmode)
122 adapter->ps_state = PS_SLEEP;
123 wake_up_interruptible(&adapter->event_hs_wait_q);
124 BT_DBG("HS ACTIVATED!");
125 } else {
126 BT_DBG("HS Enable failed");
127 }
128 break;
129
130 case BT_EVENT_MODULE_CFG_REQ:
131 if (priv->btmrvl_dev.sendcmdflag &&
132 event->data[1] == MODULE_BRINGUP_REQ) {
133 BT_DBG("EVENT:%s",
134 ((event->data[2] == MODULE_BROUGHT_UP) ||
135 (event->data[2] == MODULE_ALREADY_UP)) ?
136 "Bring-up succeed" : "Bring-up failed");
137
138 if (event->length > 3 && event->data[3])
139 priv->btmrvl_dev.dev_type = HCI_AMP;
140 else
141 priv->btmrvl_dev.dev_type = HCI_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
167 exit:
168 if (!ret)
169 kfree_skb(skb);
170
171 return ret;
172 }
173 EXPORT_SYMBOL_GPL(btmrvl_process_event);
174
btmrvl_send_sync_cmd(struct btmrvl_private * priv,u16 opcode,const void * param,u8 len)175 static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
176 const void *param, u8 len)
177 {
178 struct sk_buff *skb;
179 struct hci_command_hdr *hdr;
180
181 if (priv->surprise_removed) {
182 BT_ERR("Card is removed");
183 return -EFAULT;
184 }
185
186 skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_KERNEL);
187 if (!skb) {
188 BT_ERR("No free skb");
189 return -ENOMEM;
190 }
191
192 hdr = skb_put(skb, HCI_COMMAND_HDR_SIZE);
193 hdr->opcode = cpu_to_le16(opcode);
194 hdr->plen = len;
195
196 if (len)
197 skb_put_data(skb, param, len);
198
199 hci_skb_pkt_type(skb) = MRVL_VENDOR_PKT;
200
201 skb_queue_head(&priv->adapter->tx_queue, skb);
202
203 priv->btmrvl_dev.sendcmdflag = true;
204
205 priv->adapter->cmd_complete = false;
206
207 wake_up_interruptible(&priv->main_thread.wait_q);
208
209 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
210 priv->adapter->cmd_complete ||
211 priv->surprise_removed,
212 WAIT_UNTIL_CMD_RESP))
213 return -ETIMEDOUT;
214
215 if (priv->surprise_removed)
216 return -EFAULT;
217
218 return 0;
219 }
220
btmrvl_send_module_cfg_cmd(struct btmrvl_private * priv,u8 subcmd)221 int 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 }
231 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
232
btmrvl_enable_sco_routing_to_host(struct btmrvl_private * priv)233 static 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
btmrvl_pscan_window_reporting(struct btmrvl_private * priv,u8 subcmd)245 int 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 }
260 EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting);
261
btmrvl_send_hscfg_cmd(struct btmrvl_private * priv)262 int 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 }
279 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
280
btmrvl_enable_ps(struct btmrvl_private * priv)281 int 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 }
297 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
298
btmrvl_enable_hs(struct btmrvl_private * priv)299 int 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 }
330 EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
331
btmrvl_prepare_command(struct btmrvl_private * priv)332 int 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
btmrvl_tx_pkt(struct btmrvl_private * priv,struct sk_buff * skb)361 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
362 {
363 int ret = 0;
364
365 if (!skb || !skb->data)
366 return -EINVAL;
367
368 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
369 BT_ERR("Tx Error: Bad skb length %d : %d",
370 skb->len, BTM_UPLD_SIZE);
371 return -EINVAL;
372 }
373
374 skb_push(skb, BTM_HEADER_LEN);
375
376 /* header type: byte[3]
377 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
378 * header length: byte[2][1][0]
379 */
380
381 skb->data[0] = (skb->len & 0x0000ff);
382 skb->data[1] = (skb->len & 0x00ff00) >> 8;
383 skb->data[2] = (skb->len & 0xff0000) >> 16;
384 skb->data[3] = hci_skb_pkt_type(skb);
385
386 if (priv->hw_host_to_card)
387 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
388
389 return ret;
390 }
391
btmrvl_init_adapter(struct btmrvl_private * priv)392 static void btmrvl_init_adapter(struct btmrvl_private *priv)
393 {
394 int buf_size;
395
396 skb_queue_head_init(&priv->adapter->tx_queue);
397
398 priv->adapter->ps_state = PS_AWAKE;
399
400 buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
401 priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
402 if (!priv->adapter->hw_regs_buf) {
403 priv->adapter->hw_regs = NULL;
404 BT_ERR("Unable to allocate buffer for hw_regs.");
405 } else {
406 priv->adapter->hw_regs =
407 (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
408 BTSDIO_DMA_ALIGN);
409 BT_DBG("hw_regs_buf=%p hw_regs=%p",
410 priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
411 }
412
413 init_waitqueue_head(&priv->adapter->cmd_wait_q);
414 init_waitqueue_head(&priv->adapter->event_hs_wait_q);
415 }
416
btmrvl_free_adapter(struct btmrvl_private * priv)417 static void btmrvl_free_adapter(struct btmrvl_private *priv)
418 {
419 skb_queue_purge(&priv->adapter->tx_queue);
420
421 kfree(priv->adapter->hw_regs_buf);
422 kfree(priv->adapter);
423
424 priv->adapter = NULL;
425 }
426
btmrvl_send_frame(struct hci_dev * hdev,struct sk_buff * skb)427 static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
428 {
429 struct btmrvl_private *priv = hci_get_drvdata(hdev);
430
431 BT_DBG("type=%d, len=%d", hci_skb_pkt_type(skb), skb->len);
432
433 if (priv->adapter->is_suspending || priv->adapter->is_suspended) {
434 BT_ERR("%s: Device is suspending or suspended", __func__);
435 return -EBUSY;
436 }
437
438 switch (hci_skb_pkt_type(skb)) {
439 case HCI_COMMAND_PKT:
440 hdev->stat.cmd_tx++;
441 break;
442
443 case HCI_ACLDATA_PKT:
444 hdev->stat.acl_tx++;
445 break;
446
447 case HCI_SCODATA_PKT:
448 hdev->stat.sco_tx++;
449 break;
450 }
451
452 skb_queue_tail(&priv->adapter->tx_queue, skb);
453
454 if (!priv->adapter->is_suspended)
455 wake_up_interruptible(&priv->main_thread.wait_q);
456
457 return 0;
458 }
459
btmrvl_flush(struct hci_dev * hdev)460 static int btmrvl_flush(struct hci_dev *hdev)
461 {
462 struct btmrvl_private *priv = hci_get_drvdata(hdev);
463
464 skb_queue_purge(&priv->adapter->tx_queue);
465
466 return 0;
467 }
468
btmrvl_close(struct hci_dev * hdev)469 static int btmrvl_close(struct hci_dev *hdev)
470 {
471 struct btmrvl_private *priv = hci_get_drvdata(hdev);
472
473 skb_queue_purge(&priv->adapter->tx_queue);
474
475 return 0;
476 }
477
btmrvl_open(struct hci_dev * hdev)478 static int btmrvl_open(struct hci_dev *hdev)
479 {
480 return 0;
481 }
482
btmrvl_download_cal_data(struct btmrvl_private * priv,u8 * data,int len)483 static int btmrvl_download_cal_data(struct btmrvl_private *priv,
484 u8 *data, int len)
485 {
486 int ret;
487
488 data[0] = 0x00;
489 data[1] = 0x00;
490 data[2] = 0x00;
491 data[3] = len;
492
493 print_hex_dump_bytes("Calibration data: ",
494 DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
495
496 ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
497 BT_CAL_HDR_LEN + len);
498 if (ret)
499 BT_ERR("Failed to download calibration data");
500
501 return 0;
502 }
503
btmrvl_check_device_tree(struct btmrvl_private * priv)504 static int btmrvl_check_device_tree(struct btmrvl_private *priv)
505 {
506 struct device_node *dt_node;
507 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
508 u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
509 int ret = 0;
510 u16 gpio, gap;
511
512 if (card->plt_of_node) {
513 dt_node = card->plt_of_node;
514 ret = of_property_read_u16(dt_node, "marvell,wakeup-pin",
515 &gpio);
516 if (ret)
517 gpio = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
518
519 ret = of_property_read_u16(dt_node, "marvell,wakeup-gap-ms",
520 &gap);
521 if (ret)
522 gap = (u8)(priv->btmrvl_dev.gpio_gap & 0x00ff);
523
524 priv->btmrvl_dev.gpio_gap = (gpio << 8) + gap;
525
526 ret = of_property_read_u8_array(dt_node, "marvell,cal-data",
527 cal_data + BT_CAL_HDR_LEN,
528 BT_CAL_DATA_SIZE);
529 if (ret)
530 return ret;
531
532 BT_DBG("Use cal data from device tree");
533 ret = btmrvl_download_cal_data(priv, cal_data,
534 BT_CAL_DATA_SIZE);
535 if (ret)
536 BT_ERR("Fail to download calibrate data");
537 }
538
539 return ret;
540 }
541
btmrvl_setup(struct hci_dev * hdev)542 static int btmrvl_setup(struct hci_dev *hdev)
543 {
544 struct btmrvl_private *priv = hci_get_drvdata(hdev);
545 int ret;
546
547 ret = btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
548 if (ret)
549 return ret;
550
551 priv->btmrvl_dev.gpio_gap = 0xfffe;
552
553 btmrvl_check_device_tree(priv);
554
555 btmrvl_enable_sco_routing_to_host(priv);
556
557 btmrvl_pscan_window_reporting(priv, 0x01);
558
559 priv->btmrvl_dev.psmode = 1;
560 btmrvl_enable_ps(priv);
561
562 btmrvl_send_hscfg_cmd(priv);
563
564 return 0;
565 }
566
btmrvl_set_bdaddr(struct hci_dev * hdev,const bdaddr_t * bdaddr)567 static int btmrvl_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
568 {
569 struct sk_buff *skb;
570 long ret;
571 u8 buf[8];
572
573 buf[0] = MRVL_VENDOR_PKT;
574 buf[1] = sizeof(bdaddr_t);
575 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
576
577 skb = __hci_cmd_sync(hdev, BT_CMD_SET_BDADDR, sizeof(buf), buf,
578 HCI_INIT_TIMEOUT);
579 if (IS_ERR(skb)) {
580 ret = PTR_ERR(skb);
581 BT_ERR("%s: changing btmrvl device address failed (%ld)",
582 hdev->name, ret);
583 return ret;
584 }
585 kfree_skb(skb);
586
587 return 0;
588 }
589
btmrvl_prevent_wake(struct hci_dev * hdev)590 static bool btmrvl_prevent_wake(struct hci_dev *hdev)
591 {
592 struct btmrvl_private *priv = hci_get_drvdata(hdev);
593 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
594
595 return !device_may_wakeup(&card->func->dev);
596 }
597
598 /*
599 * This function handles the event generated by firmware, rx data
600 * received from firmware, and tx data sent from kernel.
601 */
btmrvl_service_main_thread(void * data)602 static int btmrvl_service_main_thread(void *data)
603 {
604 struct btmrvl_thread *thread = data;
605 struct btmrvl_private *priv = thread->priv;
606 struct btmrvl_adapter *adapter = priv->adapter;
607 wait_queue_entry_t wait;
608 struct sk_buff *skb;
609 ulong flags;
610
611 init_waitqueue_entry(&wait, current);
612
613 for (;;) {
614 add_wait_queue(&thread->wait_q, &wait);
615
616 set_current_state(TASK_INTERRUPTIBLE);
617 if (kthread_should_stop() || priv->surprise_removed) {
618 BT_DBG("main_thread: break from main thread");
619 break;
620 }
621
622 if (adapter->wakeup_tries ||
623 ((!adapter->int_count) &&
624 (!priv->btmrvl_dev.tx_dnld_rdy ||
625 skb_queue_empty(&adapter->tx_queue)))) {
626 BT_DBG("main_thread is sleeping...");
627 schedule();
628 }
629
630 set_current_state(TASK_RUNNING);
631
632 remove_wait_queue(&thread->wait_q, &wait);
633
634 BT_DBG("main_thread woke up");
635
636 if (kthread_should_stop() || priv->surprise_removed) {
637 BT_DBG("main_thread: break from main thread");
638 break;
639 }
640
641 spin_lock_irqsave(&priv->driver_lock, flags);
642 if (adapter->int_count) {
643 adapter->int_count = 0;
644 spin_unlock_irqrestore(&priv->driver_lock, flags);
645 priv->hw_process_int_status(priv);
646 } else if (adapter->ps_state == PS_SLEEP &&
647 !skb_queue_empty(&adapter->tx_queue)) {
648 spin_unlock_irqrestore(&priv->driver_lock, flags);
649 adapter->wakeup_tries++;
650 priv->hw_wakeup_firmware(priv);
651 continue;
652 } else {
653 spin_unlock_irqrestore(&priv->driver_lock, flags);
654 }
655
656 if (adapter->ps_state == PS_SLEEP)
657 continue;
658
659 if (!priv->btmrvl_dev.tx_dnld_rdy ||
660 priv->adapter->is_suspended)
661 continue;
662
663 skb = skb_dequeue(&adapter->tx_queue);
664 if (skb) {
665 if (btmrvl_tx_pkt(priv, skb))
666 priv->btmrvl_dev.hcidev->stat.err_tx++;
667 else
668 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
669
670 kfree_skb(skb);
671 }
672 }
673
674 return 0;
675 }
676
btmrvl_register_hdev(struct btmrvl_private * priv)677 int btmrvl_register_hdev(struct btmrvl_private *priv)
678 {
679 struct hci_dev *hdev = NULL;
680 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
681 int ret;
682
683 hdev = hci_alloc_dev();
684 if (!hdev) {
685 BT_ERR("Can not allocate HCI device");
686 goto err_hdev;
687 }
688
689 priv->btmrvl_dev.hcidev = hdev;
690 hci_set_drvdata(hdev, priv);
691
692 hdev->bus = HCI_SDIO;
693 hdev->open = btmrvl_open;
694 hdev->close = btmrvl_close;
695 hdev->flush = btmrvl_flush;
696 hdev->send = btmrvl_send_frame;
697 hdev->setup = btmrvl_setup;
698 hdev->set_bdaddr = btmrvl_set_bdaddr;
699 hdev->prevent_wake = btmrvl_prevent_wake;
700 SET_HCIDEV_DEV(hdev, &card->func->dev);
701
702 hdev->dev_type = priv->btmrvl_dev.dev_type;
703
704 ret = hci_register_dev(hdev);
705 if (ret < 0) {
706 BT_ERR("Can not register HCI device");
707 goto err_hci_register_dev;
708 }
709
710 #ifdef CONFIG_DEBUG_FS
711 btmrvl_debugfs_init(hdev);
712 #endif
713
714 return 0;
715
716 err_hci_register_dev:
717 hci_free_dev(hdev);
718
719 err_hdev:
720 /* Stop the thread servicing the interrupts */
721 kthread_stop(priv->main_thread.task);
722
723 btmrvl_free_adapter(priv);
724 kfree(priv);
725
726 return -ENOMEM;
727 }
728 EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
729
btmrvl_add_card(void * card)730 struct btmrvl_private *btmrvl_add_card(void *card)
731 {
732 struct btmrvl_private *priv;
733
734 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
735 if (!priv) {
736 BT_ERR("Can not allocate priv");
737 goto err_priv;
738 }
739
740 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
741 if (!priv->adapter) {
742 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
743 goto err_adapter;
744 }
745
746 btmrvl_init_adapter(priv);
747
748 BT_DBG("Starting kthread...");
749 priv->main_thread.priv = priv;
750 spin_lock_init(&priv->driver_lock);
751
752 init_waitqueue_head(&priv->main_thread.wait_q);
753 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
754 &priv->main_thread, "btmrvl_main_service");
755 if (IS_ERR(priv->main_thread.task))
756 goto err_thread;
757
758 priv->btmrvl_dev.card = card;
759 priv->btmrvl_dev.tx_dnld_rdy = true;
760
761 return priv;
762
763 err_thread:
764 btmrvl_free_adapter(priv);
765
766 err_adapter:
767 kfree(priv);
768
769 err_priv:
770 return NULL;
771 }
772 EXPORT_SYMBOL_GPL(btmrvl_add_card);
773
btmrvl_remove_card(struct btmrvl_private * priv)774 int btmrvl_remove_card(struct btmrvl_private *priv)
775 {
776 struct hci_dev *hdev;
777
778 hdev = priv->btmrvl_dev.hcidev;
779
780 wake_up_interruptible(&priv->adapter->cmd_wait_q);
781 wake_up_interruptible(&priv->adapter->event_hs_wait_q);
782
783 kthread_stop(priv->main_thread.task);
784
785 #ifdef CONFIG_DEBUG_FS
786 btmrvl_debugfs_remove(hdev);
787 #endif
788
789 hci_unregister_dev(hdev);
790
791 hci_free_dev(hdev);
792
793 priv->btmrvl_dev.hcidev = NULL;
794
795 btmrvl_free_adapter(priv);
796
797 kfree(priv);
798
799 return 0;
800 }
801 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
802
803 MODULE_AUTHOR("Marvell International Ltd.");
804 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
805 MODULE_VERSION(VERSION);
806 MODULE_LICENSE("GPL v2");
807