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 void 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 if (ocf
== BT_CMD_MODULE_CFG_REQ
&&
58 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
);
65 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt
);
67 int btmrvl_process_event(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
69 struct btmrvl_adapter
*adapter
= priv
->adapter
;
70 struct btmrvl_event
*event
;
73 event
= (struct btmrvl_event
*) skb
->data
;
74 if (event
->ec
!= 0xff) {
75 BT_DBG("Not Marvell Event=%x", event
->ec
);
80 switch (event
->data
[0]) {
81 case BT_CMD_AUTO_SLEEP_MODE
:
82 if (!event
->data
[2]) {
83 if (event
->data
[1] == BT_PS_ENABLE
)
88 (adapter
->psmode
) ? "Enable" : "Disable");
90 BT_DBG("PS Mode command failed");
94 case BT_CMD_HOST_SLEEP_CONFIG
:
96 BT_DBG("gpio=%x, gap=%x", event
->data
[1],
99 BT_DBG("HSCFG command failed");
102 case BT_CMD_HOST_SLEEP_ENABLE
:
103 if (!event
->data
[1]) {
104 adapter
->hs_state
= HS_ACTIVATED
;
106 adapter
->ps_state
= PS_SLEEP
;
107 wake_up_interruptible(&adapter
->cmd_wait_q
);
108 BT_DBG("HS ACTIVATED!");
110 BT_DBG("HS Enable failed");
114 case BT_CMD_MODULE_CFG_REQ
:
115 if (priv
->btmrvl_dev
.sendcmdflag
&&
116 event
->data
[1] == MODULE_BRINGUP_REQ
) {
118 ((event
->data
[2] == MODULE_BROUGHT_UP
) ||
119 (event
->data
[2] == MODULE_ALREADY_UP
)) ?
120 "Bring-up succeed" : "Bring-up failed");
122 if (event
->length
> 3 && event
->data
[3])
123 priv
->btmrvl_dev
.dev_type
= HCI_AMP
;
125 priv
->btmrvl_dev
.dev_type
= HCI_BREDR
;
127 BT_DBG("dev_type: %d", priv
->btmrvl_dev
.dev_type
);
128 } else if (priv
->btmrvl_dev
.sendcmdflag
&&
129 event
->data
[1] == MODULE_SHUTDOWN_REQ
) {
130 BT_DBG("EVENT:%s", (event
->data
[2]) ?
131 "Shutdown failed" : "Shutdown succeed");
133 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
138 case BT_EVENT_POWER_STATE
:
139 if (event
->data
[1] == BT_PS_SLEEP
)
140 adapter
->ps_state
= PS_SLEEP
;
142 (adapter
->ps_state
) ? "PS_SLEEP" : "PS_AWAKE");
146 BT_DBG("Unknown Event=%d", event
->data
[0]);
157 EXPORT_SYMBOL_GPL(btmrvl_process_event
);
159 int btmrvl_send_module_cfg_cmd(struct btmrvl_private
*priv
, int subcmd
)
162 struct btmrvl_cmd
*cmd
;
165 skb
= bt_skb_alloc(sizeof(*cmd
), GFP_ATOMIC
);
167 BT_ERR("No free skb");
171 cmd
= (struct btmrvl_cmd
*) skb_put(skb
, sizeof(*cmd
));
172 cmd
->ocf_ogf
= cpu_to_le16(hci_opcode_pack(OGF
, BT_CMD_MODULE_CFG_REQ
));
174 cmd
->data
[0] = subcmd
;
176 bt_cb(skb
)->pkt_type
= MRVL_VENDOR_PKT
;
178 skb
->dev
= (void *) priv
->btmrvl_dev
.hcidev
;
179 skb_queue_head(&priv
->adapter
->tx_queue
, skb
);
181 priv
->btmrvl_dev
.sendcmdflag
= true;
183 priv
->adapter
->cmd_complete
= false;
185 BT_DBG("Queue module cfg Command");
187 wake_up_interruptible(&priv
->main_thread
.wait_q
);
189 if (!wait_event_interruptible_timeout(priv
->adapter
->cmd_wait_q
,
190 priv
->adapter
->cmd_complete
,
191 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP
))) {
193 BT_ERR("module_cfg_cmd(%x): timeout: %d",
194 subcmd
, priv
->btmrvl_dev
.sendcmdflag
);
197 BT_DBG("module cfg Command done");
201 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd
);
203 int btmrvl_send_hscfg_cmd(struct btmrvl_private
*priv
)
206 struct btmrvl_cmd
*cmd
;
208 skb
= bt_skb_alloc(sizeof(*cmd
), GFP_ATOMIC
);
210 BT_ERR("No free skb");
214 cmd
= (struct btmrvl_cmd
*) skb_put(skb
, sizeof(*cmd
));
215 cmd
->ocf_ogf
= cpu_to_le16(hci_opcode_pack(OGF
,
216 BT_CMD_HOST_SLEEP_CONFIG
));
218 cmd
->data
[0] = (priv
->btmrvl_dev
.gpio_gap
& 0xff00) >> 8;
219 cmd
->data
[1] = (u8
) (priv
->btmrvl_dev
.gpio_gap
& 0x00ff);
221 bt_cb(skb
)->pkt_type
= MRVL_VENDOR_PKT
;
223 skb
->dev
= (void *) priv
->btmrvl_dev
.hcidev
;
224 skb_queue_head(&priv
->adapter
->tx_queue
, skb
);
226 BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x", cmd
->data
[0],
231 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd
);
233 int btmrvl_enable_ps(struct btmrvl_private
*priv
)
236 struct btmrvl_cmd
*cmd
;
238 skb
= bt_skb_alloc(sizeof(*cmd
), GFP_ATOMIC
);
240 BT_ERR("No free skb");
244 cmd
= (struct btmrvl_cmd
*) skb_put(skb
, sizeof(*cmd
));
245 cmd
->ocf_ogf
= cpu_to_le16(hci_opcode_pack(OGF
,
246 BT_CMD_AUTO_SLEEP_MODE
));
249 if (priv
->btmrvl_dev
.psmode
)
250 cmd
->data
[0] = BT_PS_ENABLE
;
252 cmd
->data
[0] = BT_PS_DISABLE
;
254 bt_cb(skb
)->pkt_type
= MRVL_VENDOR_PKT
;
256 skb
->dev
= (void *) priv
->btmrvl_dev
.hcidev
;
257 skb_queue_head(&priv
->adapter
->tx_queue
, skb
);
259 BT_DBG("Queue PSMODE Command:%d", cmd
->data
[0]);
263 EXPORT_SYMBOL_GPL(btmrvl_enable_ps
);
265 int btmrvl_enable_hs(struct btmrvl_private
*priv
)
268 struct btmrvl_cmd
*cmd
;
271 skb
= bt_skb_alloc(sizeof(*cmd
), GFP_ATOMIC
);
273 BT_ERR("No free skb");
277 cmd
= (struct btmrvl_cmd
*) skb_put(skb
, sizeof(*cmd
));
278 cmd
->ocf_ogf
= cpu_to_le16(hci_opcode_pack(OGF
, BT_CMD_HOST_SLEEP_ENABLE
));
281 bt_cb(skb
)->pkt_type
= MRVL_VENDOR_PKT
;
283 skb
->dev
= (void *) priv
->btmrvl_dev
.hcidev
;
284 skb_queue_head(&priv
->adapter
->tx_queue
, skb
);
286 BT_DBG("Queue hs enable Command");
288 wake_up_interruptible(&priv
->main_thread
.wait_q
);
290 if (!wait_event_interruptible_timeout(priv
->adapter
->cmd_wait_q
,
291 priv
->adapter
->hs_state
,
292 msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED
))) {
294 BT_ERR("timeout: %d, %d,%d", priv
->adapter
->hs_state
,
295 priv
->adapter
->ps_state
,
296 priv
->adapter
->wakeup_tries
);
301 EXPORT_SYMBOL_GPL(btmrvl_enable_hs
);
303 int btmrvl_prepare_command(struct btmrvl_private
*priv
)
307 if (priv
->btmrvl_dev
.hscfgcmd
) {
308 priv
->btmrvl_dev
.hscfgcmd
= 0;
309 btmrvl_send_hscfg_cmd(priv
);
312 if (priv
->btmrvl_dev
.pscmd
) {
313 priv
->btmrvl_dev
.pscmd
= 0;
314 btmrvl_enable_ps(priv
);
317 if (priv
->btmrvl_dev
.hscmd
) {
318 priv
->btmrvl_dev
.hscmd
= 0;
320 if (priv
->btmrvl_dev
.hsmode
) {
321 ret
= btmrvl_enable_hs(priv
);
323 ret
= priv
->hw_wakeup_firmware(priv
);
324 priv
->adapter
->hs_state
= HS_DEACTIVATED
;
331 static int btmrvl_tx_pkt(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
335 if (!skb
|| !skb
->data
)
338 if (!skb
->len
|| ((skb
->len
+ BTM_HEADER_LEN
) > BTM_UPLD_SIZE
)) {
339 BT_ERR("Tx Error: Bad skb length %d : %d",
340 skb
->len
, BTM_UPLD_SIZE
);
344 if (skb_headroom(skb
) < BTM_HEADER_LEN
) {
345 struct sk_buff
*tmp
= skb
;
347 skb
= skb_realloc_headroom(skb
, BTM_HEADER_LEN
);
349 BT_ERR("Tx Error: realloc_headroom failed %d",
358 skb_push(skb
, BTM_HEADER_LEN
);
360 /* header type: byte[3]
361 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
362 * header length: byte[2][1][0]
365 skb
->data
[0] = (skb
->len
& 0x0000ff);
366 skb
->data
[1] = (skb
->len
& 0x00ff00) >> 8;
367 skb
->data
[2] = (skb
->len
& 0xff0000) >> 16;
368 skb
->data
[3] = bt_cb(skb
)->pkt_type
;
370 if (priv
->hw_host_to_card
)
371 ret
= priv
->hw_host_to_card(priv
, skb
->data
, skb
->len
);
376 static void btmrvl_init_adapter(struct btmrvl_private
*priv
)
378 skb_queue_head_init(&priv
->adapter
->tx_queue
);
380 priv
->adapter
->ps_state
= PS_AWAKE
;
382 init_waitqueue_head(&priv
->adapter
->cmd_wait_q
);
385 static void btmrvl_free_adapter(struct btmrvl_private
*priv
)
387 skb_queue_purge(&priv
->adapter
->tx_queue
);
389 kfree(priv
->adapter
);
391 priv
->adapter
= NULL
;
394 static int btmrvl_ioctl(struct hci_dev
*hdev
,
395 unsigned int cmd
, unsigned long arg
)
400 static int btmrvl_send_frame(struct sk_buff
*skb
)
402 struct hci_dev
*hdev
= (struct hci_dev
*) skb
->dev
;
403 struct btmrvl_private
*priv
= NULL
;
405 BT_DBG("type=%d, len=%d", skb
->pkt_type
, skb
->len
);
408 BT_ERR("Frame for unknown HCI device");
412 priv
= hci_get_drvdata(hdev
);
414 if (!test_bit(HCI_RUNNING
, &hdev
->flags
)) {
415 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev
->flags
);
416 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET
,
417 skb
->data
, skb
->len
);
421 switch (bt_cb(skb
)->pkt_type
) {
422 case HCI_COMMAND_PKT
:
426 case HCI_ACLDATA_PKT
:
430 case HCI_SCODATA_PKT
:
435 skb_queue_tail(&priv
->adapter
->tx_queue
, skb
);
437 wake_up_interruptible(&priv
->main_thread
.wait_q
);
442 static int btmrvl_flush(struct hci_dev
*hdev
)
444 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
446 skb_queue_purge(&priv
->adapter
->tx_queue
);
451 static int btmrvl_close(struct hci_dev
*hdev
)
453 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
455 if (!test_and_clear_bit(HCI_RUNNING
, &hdev
->flags
))
458 skb_queue_purge(&priv
->adapter
->tx_queue
);
463 static int btmrvl_open(struct hci_dev
*hdev
)
465 set_bit(HCI_RUNNING
, &hdev
->flags
);
471 * This function handles the event generated by firmware, rx data
472 * received from firmware, and tx data sent from kernel.
474 static int btmrvl_service_main_thread(void *data
)
476 struct btmrvl_thread
*thread
= data
;
477 struct btmrvl_private
*priv
= thread
->priv
;
478 struct btmrvl_adapter
*adapter
= priv
->adapter
;
483 init_waitqueue_entry(&wait
, current
);
486 add_wait_queue(&thread
->wait_q
, &wait
);
488 set_current_state(TASK_INTERRUPTIBLE
);
490 if (adapter
->wakeup_tries
||
491 ((!adapter
->int_count
) &&
492 (!priv
->btmrvl_dev
.tx_dnld_rdy
||
493 skb_queue_empty(&adapter
->tx_queue
)))) {
494 BT_DBG("main_thread is sleeping...");
498 set_current_state(TASK_RUNNING
);
500 remove_wait_queue(&thread
->wait_q
, &wait
);
502 BT_DBG("main_thread woke up");
504 if (kthread_should_stop()) {
505 BT_DBG("main_thread: break from main thread");
509 spin_lock_irqsave(&priv
->driver_lock
, flags
);
510 if (adapter
->int_count
) {
511 adapter
->int_count
= 0;
512 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
513 priv
->hw_process_int_status(priv
);
514 } else if (adapter
->ps_state
== PS_SLEEP
&&
515 !skb_queue_empty(&adapter
->tx_queue
)) {
516 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
517 adapter
->wakeup_tries
++;
518 priv
->hw_wakeup_firmware(priv
);
521 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
524 if (adapter
->ps_state
== PS_SLEEP
)
527 if (!priv
->btmrvl_dev
.tx_dnld_rdy
)
530 skb
= skb_dequeue(&adapter
->tx_queue
);
532 if (btmrvl_tx_pkt(priv
, skb
))
533 priv
->btmrvl_dev
.hcidev
->stat
.err_tx
++;
535 priv
->btmrvl_dev
.hcidev
->stat
.byte_tx
+= skb
->len
;
544 int btmrvl_register_hdev(struct btmrvl_private
*priv
)
546 struct hci_dev
*hdev
= NULL
;
549 hdev
= hci_alloc_dev();
551 BT_ERR("Can not allocate HCI device");
555 priv
->btmrvl_dev
.hcidev
= hdev
;
556 hci_set_drvdata(hdev
, priv
);
558 hdev
->bus
= HCI_SDIO
;
559 hdev
->open
= btmrvl_open
;
560 hdev
->close
= btmrvl_close
;
561 hdev
->flush
= btmrvl_flush
;
562 hdev
->send
= btmrvl_send_frame
;
563 hdev
->ioctl
= btmrvl_ioctl
;
565 btmrvl_send_module_cfg_cmd(priv
, MODULE_BRINGUP_REQ
);
567 hdev
->dev_type
= priv
->btmrvl_dev
.dev_type
;
569 ret
= hci_register_dev(hdev
);
571 BT_ERR("Can not register HCI device");
572 goto err_hci_register_dev
;
575 #ifdef CONFIG_DEBUG_FS
576 btmrvl_debugfs_init(hdev
);
581 err_hci_register_dev
:
585 /* Stop the thread servicing the interrupts */
586 kthread_stop(priv
->main_thread
.task
);
588 btmrvl_free_adapter(priv
);
593 EXPORT_SYMBOL_GPL(btmrvl_register_hdev
);
595 struct btmrvl_private
*btmrvl_add_card(void *card
)
597 struct btmrvl_private
*priv
;
599 priv
= kzalloc(sizeof(*priv
), GFP_KERNEL
);
601 BT_ERR("Can not allocate priv");
605 priv
->adapter
= kzalloc(sizeof(*priv
->adapter
), GFP_KERNEL
);
606 if (!priv
->adapter
) {
607 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
611 btmrvl_init_adapter(priv
);
613 BT_DBG("Starting kthread...");
614 priv
->main_thread
.priv
= priv
;
615 spin_lock_init(&priv
->driver_lock
);
617 init_waitqueue_head(&priv
->main_thread
.wait_q
);
618 priv
->main_thread
.task
= kthread_run(btmrvl_service_main_thread
,
619 &priv
->main_thread
, "btmrvl_main_service");
621 priv
->btmrvl_dev
.card
= card
;
622 priv
->btmrvl_dev
.tx_dnld_rdy
= true;
632 EXPORT_SYMBOL_GPL(btmrvl_add_card
);
634 int btmrvl_remove_card(struct btmrvl_private
*priv
)
636 struct hci_dev
*hdev
;
638 hdev
= priv
->btmrvl_dev
.hcidev
;
640 wake_up_interruptible(&priv
->adapter
->cmd_wait_q
);
642 kthread_stop(priv
->main_thread
.task
);
644 #ifdef CONFIG_DEBUG_FS
645 btmrvl_debugfs_remove(hdev
);
648 hci_unregister_dev(hdev
);
652 priv
->btmrvl_dev
.hcidev
= NULL
;
654 btmrvl_free_adapter(priv
);
660 EXPORT_SYMBOL_GPL(btmrvl_remove_card
);
662 MODULE_AUTHOR("Marvell International Ltd.");
663 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION
);
664 MODULE_VERSION(VERSION
);
665 MODULE_LICENSE("GPL v2");