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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 <net/bluetooth/bluetooth.h>
22#include <net/bluetooth/hci_core.h>
23
24#include "btmrvl_drv.h"
25
26#define VERSION "1.0"
27
28/*
29 * This function is called by interface specific interrupt handler.
30 * It updates Power Save & Host Sleep states, and wakes up the main
31 * thread.
32 */
33void btmrvl_interrupt(struct btmrvl_private *priv)
34{
35 priv->adapter->ps_state = PS_AWAKE;
36
37 priv->adapter->wakeup_tries = 0;
38
39 priv->adapter->int_count++;
40
41 wake_up_interruptible(&priv->main_thread.wait_q);
42}
43EXPORT_SYMBOL_GPL(btmrvl_interrupt);
44
45void btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
46{
47 struct hci_event_hdr *hdr = (void *) skb->data;
48 struct hci_ev_cmd_complete *ec;
49 u16 opcode, ocf;
50
51 if (hdr->evt == HCI_EV_CMD_COMPLETE) {
52 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
53 opcode = __le16_to_cpu(ec->opcode);
54 ocf = hci_opcode_ocf(opcode);
55 if (ocf == BT_CMD_MODULE_CFG_REQ &&
56 priv->btmrvl_dev.sendcmdflag) {
57 priv->btmrvl_dev.sendcmdflag = false;
58 priv->adapter->cmd_complete = true;
59 wake_up_interruptible(&priv->adapter->cmd_wait_q);
60 }
61 }
62}
63EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
64
65int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
66{
67 struct btmrvl_adapter *adapter = priv->adapter;
68 struct btmrvl_event *event;
69 int ret = 0;
70
71 event = (struct btmrvl_event *) skb->data;
72 if (event->ec != 0xff) {
73 BT_DBG("Not Marvell Event=%x", event->ec);
74 ret = -EINVAL;
75 goto exit;
76 }
77
78 switch (event->data[0]) {
79 case BT_CMD_AUTO_SLEEP_MODE:
80 if (!event->data[2]) {
81 if (event->data[1] == BT_PS_ENABLE)
82 adapter->psmode = 1;
83 else
84 adapter->psmode = 0;
85 BT_DBG("PS Mode:%s",
86 (adapter->psmode) ? "Enable" : "Disable");
87 } else {
88 BT_DBG("PS Mode command failed");
89 }
90 break;
91
92 case BT_CMD_HOST_SLEEP_CONFIG:
93 if (!event->data[3])
94 BT_DBG("gpio=%x, gap=%x", event->data[1],
95 event->data[2]);
96 else
97 BT_DBG("HSCFG command failed");
98 break;
99
100 case BT_CMD_HOST_SLEEP_ENABLE:
101 if (!event->data[1]) {
102 adapter->hs_state = HS_ACTIVATED;
103 if (adapter->psmode)
104 adapter->ps_state = PS_SLEEP;
105 wake_up_interruptible(&adapter->cmd_wait_q);
106 BT_DBG("HS ACTIVATED!");
107 } else {
108 BT_DBG("HS Enable failed");
109 }
110 break;
111
112 case BT_CMD_MODULE_CFG_REQ:
113 if (priv->btmrvl_dev.sendcmdflag &&
114 event->data[1] == MODULE_BRINGUP_REQ) {
115 BT_DBG("EVENT:%s",
116 ((event->data[2] == MODULE_BROUGHT_UP) ||
117 (event->data[2] == MODULE_ALREADY_UP)) ?
118 "Bring-up succeed" : "Bring-up failed");
119
120 if (event->length > 3 && event->data[3])
121 priv->btmrvl_dev.dev_type = HCI_AMP;
122 else
123 priv->btmrvl_dev.dev_type = HCI_BREDR;
124
125 BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
126 } else if (priv->btmrvl_dev.sendcmdflag &&
127 event->data[1] == MODULE_SHUTDOWN_REQ) {
128 BT_DBG("EVENT:%s", (event->data[2]) ?
129 "Shutdown failed" : "Shutdown succeed");
130 } else {
131 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
132 ret = -EINVAL;
133 }
134 break;
135
136 case BT_EVENT_POWER_STATE:
137 if (event->data[1] == BT_PS_SLEEP)
138 adapter->ps_state = PS_SLEEP;
139 BT_DBG("EVENT:%s",
140 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
141 break;
142
143 default:
144 BT_DBG("Unknown Event=%d", event->data[0]);
145 ret = -EINVAL;
146 break;
147 }
148
149exit:
150 if (!ret)
151 kfree_skb(skb);
152
153 return ret;
154}
155EXPORT_SYMBOL_GPL(btmrvl_process_event);
156
157int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
158{
159 struct sk_buff *skb;
160 struct btmrvl_cmd *cmd;
161 int ret = 0;
162
163 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
164 if (skb == NULL) {
165 BT_ERR("No free skb");
166 return -ENOMEM;
167 }
168
169 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
170 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_MODULE_CFG_REQ));
171 cmd->length = 1;
172 cmd->data[0] = subcmd;
173
174 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
175
176 skb->dev = (void *) priv->btmrvl_dev.hcidev;
177 skb_queue_head(&priv->adapter->tx_queue, skb);
178
179 priv->btmrvl_dev.sendcmdflag = true;
180
181 priv->adapter->cmd_complete = false;
182
183 BT_DBG("Queue module cfg Command");
184
185 wake_up_interruptible(&priv->main_thread.wait_q);
186
187 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
188 priv->adapter->cmd_complete,
189 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) {
190 ret = -ETIMEDOUT;
191 BT_ERR("module_cfg_cmd(%x): timeout: %d",
192 subcmd, priv->btmrvl_dev.sendcmdflag);
193 }
194
195 BT_DBG("module cfg Command done");
196
197 return ret;
198}
199EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
200
201int btmrvl_enable_ps(struct btmrvl_private *priv)
202{
203 struct sk_buff *skb;
204 struct btmrvl_cmd *cmd;
205
206 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
207 if (skb == NULL) {
208 BT_ERR("No free skb");
209 return -ENOMEM;
210 }
211
212 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
213 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF,
214 BT_CMD_AUTO_SLEEP_MODE));
215 cmd->length = 1;
216
217 if (priv->btmrvl_dev.psmode)
218 cmd->data[0] = BT_PS_ENABLE;
219 else
220 cmd->data[0] = BT_PS_DISABLE;
221
222 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
223
224 skb->dev = (void *) priv->btmrvl_dev.hcidev;
225 skb_queue_head(&priv->adapter->tx_queue, skb);
226
227 BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
228
229 return 0;
230}
231EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
232
233static int btmrvl_enable_hs(struct btmrvl_private *priv)
234{
235 struct sk_buff *skb;
236 struct btmrvl_cmd *cmd;
237 int ret = 0;
238
239 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
240 if (skb == NULL) {
241 BT_ERR("No free skb");
242 return -ENOMEM;
243 }
244
245 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
246 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_ENABLE));
247 cmd->length = 0;
248
249 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
250
251 skb->dev = (void *) priv->btmrvl_dev.hcidev;
252 skb_queue_head(&priv->adapter->tx_queue, skb);
253
254 BT_DBG("Queue hs enable Command");
255
256 wake_up_interruptible(&priv->main_thread.wait_q);
257
258 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
259 priv->adapter->hs_state,
260 msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
261 ret = -ETIMEDOUT;
262 BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
263 priv->adapter->ps_state,
264 priv->adapter->wakeup_tries);
265 }
266
267 return ret;
268}
269
270int btmrvl_prepare_command(struct btmrvl_private *priv)
271{
272 struct sk_buff *skb = NULL;
273 struct btmrvl_cmd *cmd;
274 int ret = 0;
275
276 if (priv->btmrvl_dev.hscfgcmd) {
277 priv->btmrvl_dev.hscfgcmd = 0;
278
279 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
280 if (skb == NULL) {
281 BT_ERR("No free skb");
282 return -ENOMEM;
283 }
284
285 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
286 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_CONFIG));
287 cmd->length = 2;
288 cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
289 cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
290
291 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
292
293 skb->dev = (void *) priv->btmrvl_dev.hcidev;
294 skb_queue_head(&priv->adapter->tx_queue, skb);
295
296 BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x",
297 cmd->data[0], cmd->data[1]);
298 }
299
300 if (priv->btmrvl_dev.pscmd) {
301 priv->btmrvl_dev.pscmd = 0;
302 btmrvl_enable_ps(priv);
303 }
304
305 if (priv->btmrvl_dev.hscmd) {
306 priv->btmrvl_dev.hscmd = 0;
307
308 if (priv->btmrvl_dev.hsmode) {
309 ret = btmrvl_enable_hs(priv);
310 } else {
311 ret = priv->hw_wakeup_firmware(priv);
312 priv->adapter->hs_state = HS_DEACTIVATED;
313 }
314 }
315
316 return ret;
317}
318
319static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
320{
321 int ret = 0;
322
323 if (!skb || !skb->data)
324 return -EINVAL;
325
326 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
327 BT_ERR("Tx Error: Bad skb length %d : %d",
328 skb->len, BTM_UPLD_SIZE);
329 return -EINVAL;
330 }
331
332 if (skb_headroom(skb) < BTM_HEADER_LEN) {
333 struct sk_buff *tmp = skb;
334
335 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
336 if (!skb) {
337 BT_ERR("Tx Error: realloc_headroom failed %d",
338 BTM_HEADER_LEN);
339 skb = tmp;
340 return -EINVAL;
341 }
342
343 kfree_skb(tmp);
344 }
345
346 skb_push(skb, BTM_HEADER_LEN);
347
348 /* header type: byte[3]
349 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
350 * header length: byte[2][1][0]
351 */
352
353 skb->data[0] = (skb->len & 0x0000ff);
354 skb->data[1] = (skb->len & 0x00ff00) >> 8;
355 skb->data[2] = (skb->len & 0xff0000) >> 16;
356 skb->data[3] = bt_cb(skb)->pkt_type;
357
358 if (priv->hw_host_to_card)
359 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
360
361 return ret;
362}
363
364static void btmrvl_init_adapter(struct btmrvl_private *priv)
365{
366 skb_queue_head_init(&priv->adapter->tx_queue);
367
368 priv->adapter->ps_state = PS_AWAKE;
369
370 init_waitqueue_head(&priv->adapter->cmd_wait_q);
371}
372
373static void btmrvl_free_adapter(struct btmrvl_private *priv)
374{
375 skb_queue_purge(&priv->adapter->tx_queue);
376
377 kfree(priv->adapter);
378
379 priv->adapter = NULL;
380}
381
382static int btmrvl_ioctl(struct hci_dev *hdev,
383 unsigned int cmd, unsigned long arg)
384{
385 return -ENOIOCTLCMD;
386}
387
388static void btmrvl_destruct(struct hci_dev *hdev)
389{
390}
391
392static int btmrvl_send_frame(struct sk_buff *skb)
393{
394 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
395 struct btmrvl_private *priv = NULL;
396
397 BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
398
399 if (!hdev || !hdev->driver_data) {
400 BT_ERR("Frame for unknown HCI device");
401 return -ENODEV;
402 }
403
404 priv = (struct btmrvl_private *) hdev->driver_data;
405 if (!test_bit(HCI_RUNNING, &hdev->flags)) {
406 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
407 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
408 skb->data, skb->len);
409 return -EBUSY;
410 }
411
412 switch (bt_cb(skb)->pkt_type) {
413 case HCI_COMMAND_PKT:
414 hdev->stat.cmd_tx++;
415 break;
416
417 case HCI_ACLDATA_PKT:
418 hdev->stat.acl_tx++;
419 break;
420
421 case HCI_SCODATA_PKT:
422 hdev->stat.sco_tx++;
423 break;
424 }
425
426 skb_queue_tail(&priv->adapter->tx_queue, skb);
427
428 wake_up_interruptible(&priv->main_thread.wait_q);
429
430 return 0;
431}
432
433static int btmrvl_flush(struct hci_dev *hdev)
434{
435 struct btmrvl_private *priv = hdev->driver_data;
436
437 skb_queue_purge(&priv->adapter->tx_queue);
438
439 return 0;
440}
441
442static int btmrvl_close(struct hci_dev *hdev)
443{
444 struct btmrvl_private *priv = hdev->driver_data;
445
446 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
447 return 0;
448
449 skb_queue_purge(&priv->adapter->tx_queue);
450
451 return 0;
452}
453
454static int btmrvl_open(struct hci_dev *hdev)
455{
456 set_bit(HCI_RUNNING, &hdev->flags);
457
458 return 0;
459}
460
461/*
462 * This function handles the event generated by firmware, rx data
463 * received from firmware, and tx data sent from kernel.
464 */
465static int btmrvl_service_main_thread(void *data)
466{
467 struct btmrvl_thread *thread = data;
468 struct btmrvl_private *priv = thread->priv;
469 struct btmrvl_adapter *adapter = priv->adapter;
470 wait_queue_t wait;
471 struct sk_buff *skb;
472 ulong flags;
473
474 init_waitqueue_entry(&wait, current);
475
476 current->flags |= PF_NOFREEZE;
477
478 for (;;) {
479 add_wait_queue(&thread->wait_q, &wait);
480
481 set_current_state(TASK_INTERRUPTIBLE);
482
483 if (adapter->wakeup_tries ||
484 ((!adapter->int_count) &&
485 (!priv->btmrvl_dev.tx_dnld_rdy ||
486 skb_queue_empty(&adapter->tx_queue)))) {
487 BT_DBG("main_thread is sleeping...");
488 schedule();
489 }
490
491 set_current_state(TASK_RUNNING);
492
493 remove_wait_queue(&thread->wait_q, &wait);
494
495 BT_DBG("main_thread woke up");
496
497 if (kthread_should_stop()) {
498 BT_DBG("main_thread: break from main thread");
499 break;
500 }
501
502 spin_lock_irqsave(&priv->driver_lock, flags);
503 if (adapter->int_count) {
504 adapter->int_count = 0;
505 spin_unlock_irqrestore(&priv->driver_lock, flags);
506 priv->hw_process_int_status(priv);
507 } else if (adapter->ps_state == PS_SLEEP &&
508 !skb_queue_empty(&adapter->tx_queue)) {
509 spin_unlock_irqrestore(&priv->driver_lock, flags);
510 adapter->wakeup_tries++;
511 priv->hw_wakeup_firmware(priv);
512 continue;
513 } else {
514 spin_unlock_irqrestore(&priv->driver_lock, flags);
515 }
516
517 if (adapter->ps_state == PS_SLEEP)
518 continue;
519
520 if (!priv->btmrvl_dev.tx_dnld_rdy)
521 continue;
522
523 skb = skb_dequeue(&adapter->tx_queue);
524 if (skb) {
525 if (btmrvl_tx_pkt(priv, skb))
526 priv->btmrvl_dev.hcidev->stat.err_tx++;
527 else
528 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
529
530 kfree_skb(skb);
531 }
532 }
533
534 return 0;
535}
536
537int btmrvl_register_hdev(struct btmrvl_private *priv)
538{
539 struct hci_dev *hdev = NULL;
540 int ret;
541
542 hdev = hci_alloc_dev();
543 if (!hdev) {
544 BT_ERR("Can not allocate HCI device");
545 goto err_hdev;
546 }
547
548 priv->btmrvl_dev.hcidev = hdev;
549 hdev->driver_data = priv;
550
551 hdev->bus = HCI_SDIO;
552 hdev->open = btmrvl_open;
553 hdev->close = btmrvl_close;
554 hdev->flush = btmrvl_flush;
555 hdev->send = btmrvl_send_frame;
556 hdev->destruct = btmrvl_destruct;
557 hdev->ioctl = btmrvl_ioctl;
558 hdev->owner = THIS_MODULE;
559
560 btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
561
562 hdev->dev_type = priv->btmrvl_dev.dev_type;
563
564 ret = hci_register_dev(hdev);
565 if (ret < 0) {
566 BT_ERR("Can not register HCI device");
567 goto err_hci_register_dev;
568 }
569
570#ifdef CONFIG_DEBUG_FS
571 btmrvl_debugfs_init(hdev);
572#endif
573
574 return 0;
575
576err_hci_register_dev:
577 hci_free_dev(hdev);
578
579err_hdev:
580 /* Stop the thread servicing the interrupts */
581 kthread_stop(priv->main_thread.task);
582
583 btmrvl_free_adapter(priv);
584 kfree(priv);
585
586 return -ENOMEM;
587}
588EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
589
590struct btmrvl_private *btmrvl_add_card(void *card)
591{
592 struct btmrvl_private *priv;
593
594 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
595 if (!priv) {
596 BT_ERR("Can not allocate priv");
597 goto err_priv;
598 }
599
600 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
601 if (!priv->adapter) {
602 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
603 goto err_adapter;
604 }
605
606 btmrvl_init_adapter(priv);
607
608 BT_DBG("Starting kthread...");
609 priv->main_thread.priv = priv;
610 spin_lock_init(&priv->driver_lock);
611
612 init_waitqueue_head(&priv->main_thread.wait_q);
613 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
614 &priv->main_thread, "btmrvl_main_service");
615
616 priv->btmrvl_dev.card = card;
617 priv->btmrvl_dev.tx_dnld_rdy = true;
618
619 return priv;
620
621err_adapter:
622 kfree(priv);
623
624err_priv:
625 return NULL;
626}
627EXPORT_SYMBOL_GPL(btmrvl_add_card);
628
629int btmrvl_remove_card(struct btmrvl_private *priv)
630{
631 struct hci_dev *hdev;
632
633 hdev = priv->btmrvl_dev.hcidev;
634
635 wake_up_interruptible(&priv->adapter->cmd_wait_q);
636
637 kthread_stop(priv->main_thread.task);
638
639#ifdef CONFIG_DEBUG_FS
640 btmrvl_debugfs_remove(hdev);
641#endif
642
643 hci_unregister_dev(hdev);
644
645 hci_free_dev(hdev);
646
647 priv->btmrvl_dev.hcidev = NULL;
648
649 btmrvl_free_adapter(priv);
650
651 kfree(priv);
652
653 return 0;
654}
655EXPORT_SYMBOL_GPL(btmrvl_remove_card);
656
657MODULE_AUTHOR("Marvell International Ltd.");
658MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
659MODULE_VERSION(VERSION);
660MODULE_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
26#include "btmrvl_drv.h"
27
28#define VERSION "1.0"
29
30/*
31 * This function is called by interface specific interrupt handler.
32 * It updates Power Save & Host Sleep states, and wakes up the main
33 * thread.
34 */
35void btmrvl_interrupt(struct btmrvl_private *priv)
36{
37 priv->adapter->ps_state = PS_AWAKE;
38
39 priv->adapter->wakeup_tries = 0;
40
41 priv->adapter->int_count++;
42
43 wake_up_interruptible(&priv->main_thread.wait_q);
44}
45EXPORT_SYMBOL_GPL(btmrvl_interrupt);
46
47bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
48{
49 struct hci_event_hdr *hdr = (void *) skb->data;
50
51 if (hdr->evt == HCI_EV_CMD_COMPLETE) {
52 struct hci_ev_cmd_complete *ec;
53 u16 opcode;
54
55 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
56 opcode = __le16_to_cpu(ec->opcode);
57
58 if (priv->btmrvl_dev.sendcmdflag) {
59 priv->btmrvl_dev.sendcmdflag = false;
60 priv->adapter->cmd_complete = true;
61 wake_up_interruptible(&priv->adapter->cmd_wait_q);
62
63 if (hci_opcode_ogf(opcode) == 0x3F) {
64 BT_DBG("vendor event skipped: opcode=%#4.4x",
65 opcode);
66 kfree_skb(skb);
67 return false;
68 }
69 }
70 }
71
72 return true;
73}
74EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
75
76int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
77{
78 struct btmrvl_adapter *adapter = priv->adapter;
79 struct btmrvl_event *event;
80 int ret = 0;
81
82 event = (struct btmrvl_event *) skb->data;
83 if (event->ec != 0xff) {
84 BT_DBG("Not Marvell Event=%x", event->ec);
85 ret = -EINVAL;
86 goto exit;
87 }
88
89 switch (event->data[0]) {
90 case BT_EVENT_AUTO_SLEEP_MODE:
91 if (!event->data[2]) {
92 if (event->data[1] == BT_PS_ENABLE)
93 adapter->psmode = 1;
94 else
95 adapter->psmode = 0;
96 BT_DBG("PS Mode:%s",
97 (adapter->psmode) ? "Enable" : "Disable");
98 } else {
99 BT_DBG("PS Mode command failed");
100 }
101 break;
102
103 case BT_EVENT_HOST_SLEEP_CONFIG:
104 if (!event->data[3])
105 BT_DBG("gpio=%x, gap=%x", event->data[1],
106 event->data[2]);
107 else
108 BT_DBG("HSCFG command failed");
109 break;
110
111 case BT_EVENT_HOST_SLEEP_ENABLE:
112 if (!event->data[1]) {
113 adapter->hs_state = HS_ACTIVATED;
114 if (adapter->psmode)
115 adapter->ps_state = PS_SLEEP;
116 BT_DBG("HS ACTIVATED!");
117 } else {
118 BT_DBG("HS Enable failed");
119 }
120 break;
121
122 case BT_EVENT_MODULE_CFG_REQ:
123 if (priv->btmrvl_dev.sendcmdflag &&
124 event->data[1] == MODULE_BRINGUP_REQ) {
125 BT_DBG("EVENT:%s",
126 ((event->data[2] == MODULE_BROUGHT_UP) ||
127 (event->data[2] == MODULE_ALREADY_UP)) ?
128 "Bring-up succeed" : "Bring-up failed");
129
130 if (event->length > 3 && event->data[3])
131 priv->btmrvl_dev.dev_type = HCI_AMP;
132 else
133 priv->btmrvl_dev.dev_type = HCI_BREDR;
134
135 BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
136 } else if (priv->btmrvl_dev.sendcmdflag &&
137 event->data[1] == MODULE_SHUTDOWN_REQ) {
138 BT_DBG("EVENT:%s", (event->data[2]) ?
139 "Shutdown failed" : "Shutdown succeed");
140 } else {
141 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
142 ret = -EINVAL;
143 }
144 break;
145
146 case BT_EVENT_POWER_STATE:
147 if (event->data[1] == BT_PS_SLEEP)
148 adapter->ps_state = PS_SLEEP;
149 BT_DBG("EVENT:%s",
150 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
151 break;
152
153 default:
154 BT_DBG("Unknown Event=%d", event->data[0]);
155 ret = -EINVAL;
156 break;
157 }
158
159exit:
160 if (!ret)
161 kfree_skb(skb);
162
163 return ret;
164}
165EXPORT_SYMBOL_GPL(btmrvl_process_event);
166
167static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
168 const void *param, u8 len)
169{
170 struct sk_buff *skb;
171 struct hci_command_hdr *hdr;
172
173 skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
174 if (skb == NULL) {
175 BT_ERR("No free skb");
176 return -ENOMEM;
177 }
178
179 hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
180 hdr->opcode = cpu_to_le16(opcode);
181 hdr->plen = len;
182
183 if (len)
184 memcpy(skb_put(skb, len), param, len);
185
186 bt_cb(skb)->pkt_type = 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 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP)))
199 return -ETIMEDOUT;
200
201 return 0;
202}
203
204int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
205{
206 int ret;
207
208 ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
209 if (ret)
210 BT_ERR("module_cfg_cmd(%x) failed\n", subcmd);
211
212 return ret;
213}
214EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
215
216int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
217{
218 int ret;
219 u8 param[2];
220
221 param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
222 param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
223
224 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
225 param[0], param[1]);
226
227 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
228 if (ret)
229 BT_ERR("HSCFG command failed\n");
230
231 return ret;
232}
233EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
234
235int btmrvl_enable_ps(struct btmrvl_private *priv)
236{
237 int ret;
238 u8 param;
239
240 if (priv->btmrvl_dev.psmode)
241 param = BT_PS_ENABLE;
242 else
243 param = BT_PS_DISABLE;
244
245 ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, ¶m, 1);
246 if (ret)
247 BT_ERR("PSMODE command failed\n");
248
249 return 0;
250}
251EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
252
253int btmrvl_enable_hs(struct btmrvl_private *priv)
254{
255 int ret;
256
257 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
258 if (ret)
259 BT_ERR("Host sleep enable command failed\n");
260
261 return ret;
262}
263EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
264
265int btmrvl_prepare_command(struct btmrvl_private *priv)
266{
267 int ret = 0;
268
269 if (priv->btmrvl_dev.hscfgcmd) {
270 priv->btmrvl_dev.hscfgcmd = 0;
271 btmrvl_send_hscfg_cmd(priv);
272 }
273
274 if (priv->btmrvl_dev.pscmd) {
275 priv->btmrvl_dev.pscmd = 0;
276 btmrvl_enable_ps(priv);
277 }
278
279 if (priv->btmrvl_dev.hscmd) {
280 priv->btmrvl_dev.hscmd = 0;
281
282 if (priv->btmrvl_dev.hsmode) {
283 ret = btmrvl_enable_hs(priv);
284 } else {
285 ret = priv->hw_wakeup_firmware(priv);
286 priv->adapter->hs_state = HS_DEACTIVATED;
287 }
288 }
289
290 return ret;
291}
292
293static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
294{
295 int ret = 0;
296
297 if (!skb || !skb->data)
298 return -EINVAL;
299
300 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
301 BT_ERR("Tx Error: Bad skb length %d : %d",
302 skb->len, BTM_UPLD_SIZE);
303 return -EINVAL;
304 }
305
306 if (skb_headroom(skb) < BTM_HEADER_LEN) {
307 struct sk_buff *tmp = skb;
308
309 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
310 if (!skb) {
311 BT_ERR("Tx Error: realloc_headroom failed %d",
312 BTM_HEADER_LEN);
313 skb = tmp;
314 return -EINVAL;
315 }
316
317 kfree_skb(tmp);
318 }
319
320 skb_push(skb, BTM_HEADER_LEN);
321
322 /* header type: byte[3]
323 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
324 * header length: byte[2][1][0]
325 */
326
327 skb->data[0] = (skb->len & 0x0000ff);
328 skb->data[1] = (skb->len & 0x00ff00) >> 8;
329 skb->data[2] = (skb->len & 0xff0000) >> 16;
330 skb->data[3] = bt_cb(skb)->pkt_type;
331
332 if (priv->hw_host_to_card)
333 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
334
335 return ret;
336}
337
338static void btmrvl_init_adapter(struct btmrvl_private *priv)
339{
340 skb_queue_head_init(&priv->adapter->tx_queue);
341
342 priv->adapter->ps_state = PS_AWAKE;
343
344 init_waitqueue_head(&priv->adapter->cmd_wait_q);
345}
346
347static void btmrvl_free_adapter(struct btmrvl_private *priv)
348{
349 skb_queue_purge(&priv->adapter->tx_queue);
350
351 kfree(priv->adapter);
352
353 priv->adapter = NULL;
354}
355
356static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
357{
358 struct btmrvl_private *priv = hci_get_drvdata(hdev);
359
360 BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
361
362 if (!test_bit(HCI_RUNNING, &hdev->flags)) {
363 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
364 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
365 skb->data, skb->len);
366 return -EBUSY;
367 }
368
369 switch (bt_cb(skb)->pkt_type) {
370 case HCI_COMMAND_PKT:
371 hdev->stat.cmd_tx++;
372 break;
373
374 case HCI_ACLDATA_PKT:
375 hdev->stat.acl_tx++;
376 break;
377
378 case HCI_SCODATA_PKT:
379 hdev->stat.sco_tx++;
380 break;
381 }
382
383 skb_queue_tail(&priv->adapter->tx_queue, skb);
384
385 wake_up_interruptible(&priv->main_thread.wait_q);
386
387 return 0;
388}
389
390static int btmrvl_flush(struct hci_dev *hdev)
391{
392 struct btmrvl_private *priv = hci_get_drvdata(hdev);
393
394 skb_queue_purge(&priv->adapter->tx_queue);
395
396 return 0;
397}
398
399static int btmrvl_close(struct hci_dev *hdev)
400{
401 struct btmrvl_private *priv = hci_get_drvdata(hdev);
402
403 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
404 return 0;
405
406 skb_queue_purge(&priv->adapter->tx_queue);
407
408 return 0;
409}
410
411static int btmrvl_open(struct hci_dev *hdev)
412{
413 set_bit(HCI_RUNNING, &hdev->flags);
414
415 return 0;
416}
417
418static int btmrvl_download_cal_data(struct btmrvl_private *priv,
419 u8 *data, int len)
420{
421 int ret;
422
423 data[0] = 0x00;
424 data[1] = 0x00;
425 data[2] = 0x00;
426 data[3] = len;
427
428 print_hex_dump_bytes("Calibration data: ",
429 DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
430
431 ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
432 BT_CAL_HDR_LEN + len);
433 if (ret)
434 BT_ERR("Failed to download caibration data\n");
435
436 return 0;
437}
438
439static int btmrvl_cal_data_dt(struct btmrvl_private *priv)
440{
441 struct device_node *dt_node;
442 u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
443 const char name[] = "btmrvl_caldata";
444 const char property[] = "btmrvl,caldata";
445 int ret;
446
447 dt_node = of_find_node_by_name(NULL, name);
448 if (!dt_node)
449 return -ENODEV;
450
451 ret = of_property_read_u8_array(dt_node, property,
452 cal_data + BT_CAL_HDR_LEN,
453 BT_CAL_DATA_SIZE);
454 if (ret)
455 return ret;
456
457 BT_DBG("Use cal data from device tree");
458 ret = btmrvl_download_cal_data(priv, cal_data, BT_CAL_DATA_SIZE);
459 if (ret) {
460 BT_ERR("Fail to download calibrate data");
461 return ret;
462 }
463
464 return 0;
465}
466
467static int btmrvl_setup(struct hci_dev *hdev)
468{
469 struct btmrvl_private *priv = hci_get_drvdata(hdev);
470
471 btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
472
473 btmrvl_cal_data_dt(priv);
474
475 priv->btmrvl_dev.psmode = 1;
476 btmrvl_enable_ps(priv);
477
478 priv->btmrvl_dev.gpio_gap = 0xffff;
479 btmrvl_send_hscfg_cmd(priv);
480
481 return 0;
482}
483
484/*
485 * This function handles the event generated by firmware, rx data
486 * received from firmware, and tx data sent from kernel.
487 */
488static int btmrvl_service_main_thread(void *data)
489{
490 struct btmrvl_thread *thread = data;
491 struct btmrvl_private *priv = thread->priv;
492 struct btmrvl_adapter *adapter = priv->adapter;
493 wait_queue_t wait;
494 struct sk_buff *skb;
495 ulong flags;
496
497 init_waitqueue_entry(&wait, current);
498
499 for (;;) {
500 add_wait_queue(&thread->wait_q, &wait);
501
502 set_current_state(TASK_INTERRUPTIBLE);
503 if (kthread_should_stop()) {
504 BT_DBG("main_thread: break from main thread");
505 break;
506 }
507
508 if (adapter->wakeup_tries ||
509 ((!adapter->int_count) &&
510 (!priv->btmrvl_dev.tx_dnld_rdy ||
511 skb_queue_empty(&adapter->tx_queue)))) {
512 BT_DBG("main_thread is sleeping...");
513 schedule();
514 }
515
516 set_current_state(TASK_RUNNING);
517
518 remove_wait_queue(&thread->wait_q, &wait);
519
520 BT_DBG("main_thread woke up");
521
522 spin_lock_irqsave(&priv->driver_lock, flags);
523 if (adapter->int_count) {
524 adapter->int_count = 0;
525 spin_unlock_irqrestore(&priv->driver_lock, flags);
526 priv->hw_process_int_status(priv);
527 } else if (adapter->ps_state == PS_SLEEP &&
528 !skb_queue_empty(&adapter->tx_queue)) {
529 spin_unlock_irqrestore(&priv->driver_lock, flags);
530 adapter->wakeup_tries++;
531 priv->hw_wakeup_firmware(priv);
532 continue;
533 } else {
534 spin_unlock_irqrestore(&priv->driver_lock, flags);
535 }
536
537 if (adapter->ps_state == PS_SLEEP)
538 continue;
539
540 if (!priv->btmrvl_dev.tx_dnld_rdy)
541 continue;
542
543 skb = skb_dequeue(&adapter->tx_queue);
544 if (skb) {
545 if (btmrvl_tx_pkt(priv, skb))
546 priv->btmrvl_dev.hcidev->stat.err_tx++;
547 else
548 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
549
550 kfree_skb(skb);
551 }
552 }
553
554 return 0;
555}
556
557int btmrvl_register_hdev(struct btmrvl_private *priv)
558{
559 struct hci_dev *hdev = NULL;
560 int ret;
561
562 hdev = hci_alloc_dev();
563 if (!hdev) {
564 BT_ERR("Can not allocate HCI device");
565 goto err_hdev;
566 }
567
568 priv->btmrvl_dev.hcidev = hdev;
569 hci_set_drvdata(hdev, priv);
570
571 hdev->bus = HCI_SDIO;
572 hdev->open = btmrvl_open;
573 hdev->close = btmrvl_close;
574 hdev->flush = btmrvl_flush;
575 hdev->send = btmrvl_send_frame;
576 hdev->setup = btmrvl_setup;
577
578 hdev->dev_type = priv->btmrvl_dev.dev_type;
579
580 ret = hci_register_dev(hdev);
581 if (ret < 0) {
582 BT_ERR("Can not register HCI device");
583 goto err_hci_register_dev;
584 }
585
586#ifdef CONFIG_DEBUG_FS
587 btmrvl_debugfs_init(hdev);
588#endif
589
590 return 0;
591
592err_hci_register_dev:
593 hci_free_dev(hdev);
594
595err_hdev:
596 /* Stop the thread servicing the interrupts */
597 kthread_stop(priv->main_thread.task);
598
599 btmrvl_free_adapter(priv);
600 kfree(priv);
601
602 return -ENOMEM;
603}
604EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
605
606struct btmrvl_private *btmrvl_add_card(void *card)
607{
608 struct btmrvl_private *priv;
609
610 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
611 if (!priv) {
612 BT_ERR("Can not allocate priv");
613 goto err_priv;
614 }
615
616 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
617 if (!priv->adapter) {
618 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
619 goto err_adapter;
620 }
621
622 btmrvl_init_adapter(priv);
623
624 BT_DBG("Starting kthread...");
625 priv->main_thread.priv = priv;
626 spin_lock_init(&priv->driver_lock);
627
628 init_waitqueue_head(&priv->main_thread.wait_q);
629 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
630 &priv->main_thread, "btmrvl_main_service");
631
632 priv->btmrvl_dev.card = card;
633 priv->btmrvl_dev.tx_dnld_rdy = true;
634
635 return priv;
636
637err_adapter:
638 kfree(priv);
639
640err_priv:
641 return NULL;
642}
643EXPORT_SYMBOL_GPL(btmrvl_add_card);
644
645int btmrvl_remove_card(struct btmrvl_private *priv)
646{
647 struct hci_dev *hdev;
648
649 hdev = priv->btmrvl_dev.hcidev;
650
651 wake_up_interruptible(&priv->adapter->cmd_wait_q);
652
653 kthread_stop(priv->main_thread.task);
654
655#ifdef CONFIG_DEBUG_FS
656 btmrvl_debugfs_remove(hdev);
657#endif
658
659 hci_unregister_dev(hdev);
660
661 hci_free_dev(hdev);
662
663 priv->btmrvl_dev.hcidev = NULL;
664
665 btmrvl_free_adapter(priv);
666
667 kfree(priv);
668
669 return 0;
670}
671EXPORT_SYMBOL_GPL(btmrvl_remove_card);
672
673MODULE_AUTHOR("Marvell International Ltd.");
674MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
675MODULE_VERSION(VERSION);
676MODULE_LICENSE("GPL v2");