2 * Marvell Bluetooth driver
4 * Copyright (C) 2009, Marvell International Ltd.
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.
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.
21 #include <linux/module.h>
23 #include <net/bluetooth/bluetooth.h>
24 #include <net/bluetooth/hci_core.h>
26 #include "btmrvl_drv.h"
31 * This function is called by interface specific interrupt handler.
32 * It updates Power Save & Host Sleep states, and wakes up the main
35 void btmrvl_interrupt(struct btmrvl_private
*priv
)
37 priv
->adapter
->ps_state
= PS_AWAKE
;
39 priv
->adapter
->wakeup_tries
= 0;
41 priv
->adapter
->int_count
++;
43 wake_up_interruptible(&priv
->main_thread
.wait_q
);
45 EXPORT_SYMBOL_GPL(btmrvl_interrupt
);
47 bool btmrvl_check_evtpkt(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
49 struct hci_event_hdr
*hdr
= (void *) skb
->data
;
50 struct hci_ev_cmd_complete
*ec
;
53 if (hdr
->evt
== HCI_EV_CMD_COMPLETE
) {
54 ec
= (void *) (skb
->data
+ HCI_EVENT_HDR_SIZE
);
55 opcode
= __le16_to_cpu(ec
->opcode
);
56 ocf
= hci_opcode_ocf(opcode
);
57 ogf
= hci_opcode_ogf(opcode
);
59 if (ocf
== BT_CMD_MODULE_CFG_REQ
&&
60 priv
->btmrvl_dev
.sendcmdflag
) {
61 priv
->btmrvl_dev
.sendcmdflag
= false;
62 priv
->adapter
->cmd_complete
= true;
63 wake_up_interruptible(&priv
->adapter
->cmd_wait_q
);
67 BT_DBG("vendor event skipped: ogf 0x%4.4x", ogf
);
75 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt
);
77 int btmrvl_process_event(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
79 struct btmrvl_adapter
*adapter
= priv
->adapter
;
80 struct btmrvl_event
*event
;
83 event
= (struct btmrvl_event
*) skb
->data
;
84 if (event
->ec
!= 0xff) {
85 BT_DBG("Not Marvell Event=%x", event
->ec
);
90 switch (event
->data
[0]) {
91 case BT_CMD_AUTO_SLEEP_MODE
:
92 if (!event
->data
[2]) {
93 if (event
->data
[1] == BT_PS_ENABLE
)
98 (adapter
->psmode
) ? "Enable" : "Disable");
100 BT_DBG("PS Mode command failed");
104 case BT_CMD_HOST_SLEEP_CONFIG
:
106 BT_DBG("gpio=%x, gap=%x", event
->data
[1],
109 BT_DBG("HSCFG command failed");
112 case BT_CMD_HOST_SLEEP_ENABLE
:
113 if (!event
->data
[1]) {
114 adapter
->hs_state
= HS_ACTIVATED
;
116 adapter
->ps_state
= PS_SLEEP
;
117 wake_up_interruptible(&adapter
->cmd_wait_q
);
118 BT_DBG("HS ACTIVATED!");
120 BT_DBG("HS Enable failed");
124 case BT_CMD_MODULE_CFG_REQ
:
125 if (priv
->btmrvl_dev
.sendcmdflag
&&
126 event
->data
[1] == MODULE_BRINGUP_REQ
) {
128 ((event
->data
[2] == MODULE_BROUGHT_UP
) ||
129 (event
->data
[2] == MODULE_ALREADY_UP
)) ?
130 "Bring-up succeed" : "Bring-up failed");
132 if (event
->length
> 3 && event
->data
[3])
133 priv
->btmrvl_dev
.dev_type
= HCI_AMP
;
135 priv
->btmrvl_dev
.dev_type
= HCI_BREDR
;
137 BT_DBG("dev_type: %d", priv
->btmrvl_dev
.dev_type
);
138 } else if (priv
->btmrvl_dev
.sendcmdflag
&&
139 event
->data
[1] == MODULE_SHUTDOWN_REQ
) {
140 BT_DBG("EVENT:%s", (event
->data
[2]) ?
141 "Shutdown failed" : "Shutdown succeed");
143 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
148 case BT_EVENT_POWER_STATE
:
149 if (event
->data
[1] == BT_PS_SLEEP
)
150 adapter
->ps_state
= PS_SLEEP
;
152 (adapter
->ps_state
) ? "PS_SLEEP" : "PS_AWAKE");
156 BT_DBG("Unknown Event=%d", event
->data
[0]);
167 EXPORT_SYMBOL_GPL(btmrvl_process_event
);
169 int btmrvl_send_module_cfg_cmd(struct btmrvl_private
*priv
, int subcmd
)
172 struct btmrvl_cmd
*cmd
;
175 skb
= bt_skb_alloc(sizeof(*cmd
), GFP_ATOMIC
);
177 BT_ERR("No free skb");
181 cmd
= (struct btmrvl_cmd
*) skb_put(skb
, sizeof(*cmd
));
182 cmd
->ocf_ogf
= cpu_to_le16(hci_opcode_pack(OGF
, BT_CMD_MODULE_CFG_REQ
));
184 cmd
->data
[0] = subcmd
;
186 bt_cb(skb
)->pkt_type
= MRVL_VENDOR_PKT
;
188 skb
->dev
= (void *) priv
->btmrvl_dev
.hcidev
;
189 skb_queue_head(&priv
->adapter
->tx_queue
, skb
);
191 priv
->btmrvl_dev
.sendcmdflag
= true;
193 priv
->adapter
->cmd_complete
= false;
195 BT_DBG("Queue module cfg Command");
197 wake_up_interruptible(&priv
->main_thread
.wait_q
);
199 if (!wait_event_interruptible_timeout(priv
->adapter
->cmd_wait_q
,
200 priv
->adapter
->cmd_complete
,
201 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP
))) {
203 BT_ERR("module_cfg_cmd(%x): timeout: %d",
204 subcmd
, priv
->btmrvl_dev
.sendcmdflag
);
207 BT_DBG("module cfg Command done");
211 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd
);
213 int btmrvl_send_hscfg_cmd(struct btmrvl_private
*priv
)
216 struct btmrvl_cmd
*cmd
;
218 skb
= bt_skb_alloc(sizeof(*cmd
), GFP_ATOMIC
);
220 BT_ERR("No free skb");
224 cmd
= (struct btmrvl_cmd
*) skb_put(skb
, sizeof(*cmd
));
225 cmd
->ocf_ogf
= cpu_to_le16(hci_opcode_pack(OGF
,
226 BT_CMD_HOST_SLEEP_CONFIG
));
228 cmd
->data
[0] = (priv
->btmrvl_dev
.gpio_gap
& 0xff00) >> 8;
229 cmd
->data
[1] = (u8
) (priv
->btmrvl_dev
.gpio_gap
& 0x00ff);
231 bt_cb(skb
)->pkt_type
= MRVL_VENDOR_PKT
;
233 skb
->dev
= (void *) priv
->btmrvl_dev
.hcidev
;
234 skb_queue_head(&priv
->adapter
->tx_queue
, skb
);
236 BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x", cmd
->data
[0],
241 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd
);
243 int btmrvl_enable_ps(struct btmrvl_private
*priv
)
246 struct btmrvl_cmd
*cmd
;
248 skb
= bt_skb_alloc(sizeof(*cmd
), GFP_ATOMIC
);
250 BT_ERR("No free skb");
254 cmd
= (struct btmrvl_cmd
*) skb_put(skb
, sizeof(*cmd
));
255 cmd
->ocf_ogf
= cpu_to_le16(hci_opcode_pack(OGF
,
256 BT_CMD_AUTO_SLEEP_MODE
));
259 if (priv
->btmrvl_dev
.psmode
)
260 cmd
->data
[0] = BT_PS_ENABLE
;
262 cmd
->data
[0] = BT_PS_DISABLE
;
264 bt_cb(skb
)->pkt_type
= MRVL_VENDOR_PKT
;
266 skb
->dev
= (void *) priv
->btmrvl_dev
.hcidev
;
267 skb_queue_head(&priv
->adapter
->tx_queue
, skb
);
269 BT_DBG("Queue PSMODE Command:%d", cmd
->data
[0]);
273 EXPORT_SYMBOL_GPL(btmrvl_enable_ps
);
275 int btmrvl_enable_hs(struct btmrvl_private
*priv
)
278 struct btmrvl_cmd
*cmd
;
281 skb
= bt_skb_alloc(sizeof(*cmd
), GFP_ATOMIC
);
283 BT_ERR("No free skb");
287 cmd
= (struct btmrvl_cmd
*) skb_put(skb
, sizeof(*cmd
));
288 cmd
->ocf_ogf
= cpu_to_le16(hci_opcode_pack(OGF
, BT_CMD_HOST_SLEEP_ENABLE
));
291 bt_cb(skb
)->pkt_type
= MRVL_VENDOR_PKT
;
293 skb
->dev
= (void *) priv
->btmrvl_dev
.hcidev
;
294 skb_queue_head(&priv
->adapter
->tx_queue
, skb
);
296 BT_DBG("Queue hs enable Command");
298 wake_up_interruptible(&priv
->main_thread
.wait_q
);
300 if (!wait_event_interruptible_timeout(priv
->adapter
->cmd_wait_q
,
301 priv
->adapter
->hs_state
,
302 msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED
))) {
304 BT_ERR("timeout: %d, %d,%d", priv
->adapter
->hs_state
,
305 priv
->adapter
->ps_state
,
306 priv
->adapter
->wakeup_tries
);
311 EXPORT_SYMBOL_GPL(btmrvl_enable_hs
);
313 int btmrvl_prepare_command(struct btmrvl_private
*priv
)
317 if (priv
->btmrvl_dev
.hscfgcmd
) {
318 priv
->btmrvl_dev
.hscfgcmd
= 0;
319 btmrvl_send_hscfg_cmd(priv
);
322 if (priv
->btmrvl_dev
.pscmd
) {
323 priv
->btmrvl_dev
.pscmd
= 0;
324 btmrvl_enable_ps(priv
);
327 if (priv
->btmrvl_dev
.hscmd
) {
328 priv
->btmrvl_dev
.hscmd
= 0;
330 if (priv
->btmrvl_dev
.hsmode
) {
331 ret
= btmrvl_enable_hs(priv
);
333 ret
= priv
->hw_wakeup_firmware(priv
);
334 priv
->adapter
->hs_state
= HS_DEACTIVATED
;
341 static int btmrvl_tx_pkt(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
345 if (!skb
|| !skb
->data
)
348 if (!skb
->len
|| ((skb
->len
+ BTM_HEADER_LEN
) > BTM_UPLD_SIZE
)) {
349 BT_ERR("Tx Error: Bad skb length %d : %d",
350 skb
->len
, BTM_UPLD_SIZE
);
354 if (skb_headroom(skb
) < BTM_HEADER_LEN
) {
355 struct sk_buff
*tmp
= skb
;
357 skb
= skb_realloc_headroom(skb
, BTM_HEADER_LEN
);
359 BT_ERR("Tx Error: realloc_headroom failed %d",
368 skb_push(skb
, BTM_HEADER_LEN
);
370 /* header type: byte[3]
371 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
372 * header length: byte[2][1][0]
375 skb
->data
[0] = (skb
->len
& 0x0000ff);
376 skb
->data
[1] = (skb
->len
& 0x00ff00) >> 8;
377 skb
->data
[2] = (skb
->len
& 0xff0000) >> 16;
378 skb
->data
[3] = bt_cb(skb
)->pkt_type
;
380 if (priv
->hw_host_to_card
)
381 ret
= priv
->hw_host_to_card(priv
, skb
->data
, skb
->len
);
386 static void btmrvl_init_adapter(struct btmrvl_private
*priv
)
388 skb_queue_head_init(&priv
->adapter
->tx_queue
);
390 priv
->adapter
->ps_state
= PS_AWAKE
;
392 init_waitqueue_head(&priv
->adapter
->cmd_wait_q
);
395 static void btmrvl_free_adapter(struct btmrvl_private
*priv
)
397 skb_queue_purge(&priv
->adapter
->tx_queue
);
399 kfree(priv
->adapter
);
401 priv
->adapter
= NULL
;
404 static int btmrvl_ioctl(struct hci_dev
*hdev
,
405 unsigned int cmd
, unsigned long arg
)
410 static int btmrvl_send_frame(struct sk_buff
*skb
)
412 struct hci_dev
*hdev
= (struct hci_dev
*) skb
->dev
;
413 struct btmrvl_private
*priv
= NULL
;
415 BT_DBG("type=%d, len=%d", skb
->pkt_type
, skb
->len
);
418 BT_ERR("Frame for unknown HCI device");
422 priv
= hci_get_drvdata(hdev
);
424 if (!test_bit(HCI_RUNNING
, &hdev
->flags
)) {
425 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev
->flags
);
426 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET
,
427 skb
->data
, skb
->len
);
431 switch (bt_cb(skb
)->pkt_type
) {
432 case HCI_COMMAND_PKT
:
436 case HCI_ACLDATA_PKT
:
440 case HCI_SCODATA_PKT
:
445 skb_queue_tail(&priv
->adapter
->tx_queue
, skb
);
447 wake_up_interruptible(&priv
->main_thread
.wait_q
);
452 static int btmrvl_flush(struct hci_dev
*hdev
)
454 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
456 skb_queue_purge(&priv
->adapter
->tx_queue
);
461 static int btmrvl_close(struct hci_dev
*hdev
)
463 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
465 if (!test_and_clear_bit(HCI_RUNNING
, &hdev
->flags
))
468 skb_queue_purge(&priv
->adapter
->tx_queue
);
473 static int btmrvl_open(struct hci_dev
*hdev
)
475 set_bit(HCI_RUNNING
, &hdev
->flags
);
481 * This function handles the event generated by firmware, rx data
482 * received from firmware, and tx data sent from kernel.
484 static int btmrvl_service_main_thread(void *data
)
486 struct btmrvl_thread
*thread
= data
;
487 struct btmrvl_private
*priv
= thread
->priv
;
488 struct btmrvl_adapter
*adapter
= priv
->adapter
;
493 init_waitqueue_entry(&wait
, current
);
496 add_wait_queue(&thread
->wait_q
, &wait
);
498 set_current_state(TASK_INTERRUPTIBLE
);
500 if (adapter
->wakeup_tries
||
501 ((!adapter
->int_count
) &&
502 (!priv
->btmrvl_dev
.tx_dnld_rdy
||
503 skb_queue_empty(&adapter
->tx_queue
)))) {
504 BT_DBG("main_thread is sleeping...");
508 set_current_state(TASK_RUNNING
);
510 remove_wait_queue(&thread
->wait_q
, &wait
);
512 BT_DBG("main_thread woke up");
514 if (kthread_should_stop()) {
515 BT_DBG("main_thread: break from main thread");
519 spin_lock_irqsave(&priv
->driver_lock
, flags
);
520 if (adapter
->int_count
) {
521 adapter
->int_count
= 0;
522 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
523 priv
->hw_process_int_status(priv
);
524 } else if (adapter
->ps_state
== PS_SLEEP
&&
525 !skb_queue_empty(&adapter
->tx_queue
)) {
526 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
527 adapter
->wakeup_tries
++;
528 priv
->hw_wakeup_firmware(priv
);
531 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
534 if (adapter
->ps_state
== PS_SLEEP
)
537 if (!priv
->btmrvl_dev
.tx_dnld_rdy
)
540 skb
= skb_dequeue(&adapter
->tx_queue
);
542 if (btmrvl_tx_pkt(priv
, skb
))
543 priv
->btmrvl_dev
.hcidev
->stat
.err_tx
++;
545 priv
->btmrvl_dev
.hcidev
->stat
.byte_tx
+= skb
->len
;
554 int btmrvl_register_hdev(struct btmrvl_private
*priv
)
556 struct hci_dev
*hdev
= NULL
;
559 hdev
= hci_alloc_dev();
561 BT_ERR("Can not allocate HCI device");
565 priv
->btmrvl_dev
.hcidev
= hdev
;
566 hci_set_drvdata(hdev
, priv
);
568 hdev
->bus
= HCI_SDIO
;
569 hdev
->open
= btmrvl_open
;
570 hdev
->close
= btmrvl_close
;
571 hdev
->flush
= btmrvl_flush
;
572 hdev
->send
= btmrvl_send_frame
;
573 hdev
->ioctl
= btmrvl_ioctl
;
575 btmrvl_send_module_cfg_cmd(priv
, MODULE_BRINGUP_REQ
);
577 hdev
->dev_type
= priv
->btmrvl_dev
.dev_type
;
579 ret
= hci_register_dev(hdev
);
581 BT_ERR("Can not register HCI device");
582 goto err_hci_register_dev
;
585 #ifdef CONFIG_DEBUG_FS
586 btmrvl_debugfs_init(hdev
);
591 err_hci_register_dev
:
595 /* Stop the thread servicing the interrupts */
596 kthread_stop(priv
->main_thread
.task
);
598 btmrvl_free_adapter(priv
);
603 EXPORT_SYMBOL_GPL(btmrvl_register_hdev
);
605 struct btmrvl_private
*btmrvl_add_card(void *card
)
607 struct btmrvl_private
*priv
;
609 priv
= kzalloc(sizeof(*priv
), GFP_KERNEL
);
611 BT_ERR("Can not allocate priv");
615 priv
->adapter
= kzalloc(sizeof(*priv
->adapter
), GFP_KERNEL
);
616 if (!priv
->adapter
) {
617 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
621 btmrvl_init_adapter(priv
);
623 BT_DBG("Starting kthread...");
624 priv
->main_thread
.priv
= priv
;
625 spin_lock_init(&priv
->driver_lock
);
627 init_waitqueue_head(&priv
->main_thread
.wait_q
);
628 priv
->main_thread
.task
= kthread_run(btmrvl_service_main_thread
,
629 &priv
->main_thread
, "btmrvl_main_service");
631 priv
->btmrvl_dev
.card
= card
;
632 priv
->btmrvl_dev
.tx_dnld_rdy
= true;
642 EXPORT_SYMBOL_GPL(btmrvl_add_card
);
644 int btmrvl_remove_card(struct btmrvl_private
*priv
)
646 struct hci_dev
*hdev
;
648 hdev
= priv
->btmrvl_dev
.hcidev
;
650 wake_up_interruptible(&priv
->adapter
->cmd_wait_q
);
652 kthread_stop(priv
->main_thread
.task
);
654 #ifdef CONFIG_DEBUG_FS
655 btmrvl_debugfs_remove(hdev
);
658 hci_unregister_dev(hdev
);
662 priv
->btmrvl_dev
.hcidev
= NULL
;
664 btmrvl_free_adapter(priv
);
670 EXPORT_SYMBOL_GPL(btmrvl_remove_card
);
672 MODULE_AUTHOR("Marvell International Ltd.");
673 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION
);
674 MODULE_VERSION(VERSION
);
675 MODULE_LICENSE("GPL v2");