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
;
51 if (hdr
->evt
== HCI_EV_CMD_COMPLETE
) {
52 struct hci_ev_cmd_complete
*ec
;
55 ec
= (void *) (skb
->data
+ HCI_EVENT_HDR_SIZE
);
56 opcode
= __le16_to_cpu(ec
->opcode
);
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
);
63 if (hci_opcode_ogf(opcode
) == 0x3F) {
64 BT_DBG("vendor event skipped: opcode=%#4.4x",
74 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt
);
76 int btmrvl_process_event(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
78 struct btmrvl_adapter
*adapter
= priv
->adapter
;
79 struct btmrvl_event
*event
;
82 event
= (struct btmrvl_event
*) skb
->data
;
83 if (event
->ec
!= 0xff) {
84 BT_DBG("Not Marvell Event=%x", event
->ec
);
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
)
97 (adapter
->psmode
) ? "Enable" : "Disable");
99 BT_DBG("PS Mode command failed");
103 case BT_EVENT_HOST_SLEEP_CONFIG
:
105 BT_DBG("gpio=%x, gap=%x", event
->data
[1],
108 BT_DBG("HSCFG command failed");
111 case BT_EVENT_HOST_SLEEP_ENABLE
:
112 if (!event
->data
[1]) {
113 adapter
->hs_state
= HS_ACTIVATED
;
115 adapter
->ps_state
= PS_SLEEP
;
116 BT_DBG("HS ACTIVATED!");
118 BT_DBG("HS Enable failed");
122 case BT_EVENT_MODULE_CFG_REQ
:
123 if (priv
->btmrvl_dev
.sendcmdflag
&&
124 event
->data
[1] == MODULE_BRINGUP_REQ
) {
126 ((event
->data
[2] == MODULE_BROUGHT_UP
) ||
127 (event
->data
[2] == MODULE_ALREADY_UP
)) ?
128 "Bring-up succeed" : "Bring-up failed");
130 if (event
->length
> 3 && event
->data
[3])
131 priv
->btmrvl_dev
.dev_type
= HCI_AMP
;
133 priv
->btmrvl_dev
.dev_type
= HCI_BREDR
;
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");
141 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
146 case BT_EVENT_POWER_STATE
:
147 if (event
->data
[1] == BT_PS_SLEEP
)
148 adapter
->ps_state
= PS_SLEEP
;
150 (adapter
->ps_state
) ? "PS_SLEEP" : "PS_AWAKE");
154 BT_DBG("Unknown Event=%d", event
->data
[0]);
165 EXPORT_SYMBOL_GPL(btmrvl_process_event
);
167 static int btmrvl_send_sync_cmd(struct btmrvl_private
*priv
, u16 opcode
,
168 const void *param
, u8 len
)
171 struct hci_command_hdr
*hdr
;
173 skb
= bt_skb_alloc(HCI_COMMAND_HDR_SIZE
+ len
, GFP_ATOMIC
);
175 BT_ERR("No free skb");
179 hdr
= (struct hci_command_hdr
*)skb_put(skb
, HCI_COMMAND_HDR_SIZE
);
180 hdr
->opcode
= cpu_to_le16(opcode
);
184 memcpy(skb_put(skb
, len
), param
, len
);
186 bt_cb(skb
)->pkt_type
= MRVL_VENDOR_PKT
;
188 skb_queue_head(&priv
->adapter
->tx_queue
, skb
);
190 priv
->btmrvl_dev
.sendcmdflag
= true;
192 priv
->adapter
->cmd_complete
= false;
194 wake_up_interruptible(&priv
->main_thread
.wait_q
);
196 if (!wait_event_interruptible_timeout(priv
->adapter
->cmd_wait_q
,
197 priv
->adapter
->cmd_complete
,
198 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP
)))
204 int btmrvl_send_module_cfg_cmd(struct btmrvl_private
*priv
, int subcmd
)
208 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_MODULE_CFG_REQ
, &subcmd
, 1);
210 BT_ERR("module_cfg_cmd(%x) failed\n", subcmd
);
214 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd
);
216 int btmrvl_send_hscfg_cmd(struct btmrvl_private
*priv
)
221 param
[0] = (priv
->btmrvl_dev
.gpio_gap
& 0xff00) >> 8;
222 param
[1] = (u8
) (priv
->btmrvl_dev
.gpio_gap
& 0x00ff);
224 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
227 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_HOST_SLEEP_CONFIG
, param
, 2);
229 BT_ERR("HSCFG command failed\n");
233 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd
);
235 int btmrvl_enable_ps(struct btmrvl_private
*priv
)
240 if (priv
->btmrvl_dev
.psmode
)
241 param
= BT_PS_ENABLE
;
243 param
= BT_PS_DISABLE
;
245 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_AUTO_SLEEP_MODE
, ¶m
, 1);
247 BT_ERR("PSMODE command failed\n");
251 EXPORT_SYMBOL_GPL(btmrvl_enable_ps
);
253 int btmrvl_enable_hs(struct btmrvl_private
*priv
)
257 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_HOST_SLEEP_ENABLE
, NULL
, 0);
259 BT_ERR("Host sleep enable command failed\n");
263 EXPORT_SYMBOL_GPL(btmrvl_enable_hs
);
265 int btmrvl_prepare_command(struct btmrvl_private
*priv
)
269 if (priv
->btmrvl_dev
.hscfgcmd
) {
270 priv
->btmrvl_dev
.hscfgcmd
= 0;
271 btmrvl_send_hscfg_cmd(priv
);
274 if (priv
->btmrvl_dev
.pscmd
) {
275 priv
->btmrvl_dev
.pscmd
= 0;
276 btmrvl_enable_ps(priv
);
279 if (priv
->btmrvl_dev
.hscmd
) {
280 priv
->btmrvl_dev
.hscmd
= 0;
282 if (priv
->btmrvl_dev
.hsmode
) {
283 ret
= btmrvl_enable_hs(priv
);
285 ret
= priv
->hw_wakeup_firmware(priv
);
286 priv
->adapter
->hs_state
= HS_DEACTIVATED
;
293 static int btmrvl_tx_pkt(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
297 if (!skb
|| !skb
->data
)
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
);
306 if (skb_headroom(skb
) < BTM_HEADER_LEN
) {
307 struct sk_buff
*tmp
= skb
;
309 skb
= skb_realloc_headroom(skb
, BTM_HEADER_LEN
);
311 BT_ERR("Tx Error: realloc_headroom failed %d",
320 skb_push(skb
, BTM_HEADER_LEN
);
322 /* header type: byte[3]
323 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
324 * header length: byte[2][1][0]
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
;
332 if (priv
->hw_host_to_card
)
333 ret
= priv
->hw_host_to_card(priv
, skb
->data
, skb
->len
);
338 static void btmrvl_init_adapter(struct btmrvl_private
*priv
)
340 skb_queue_head_init(&priv
->adapter
->tx_queue
);
342 priv
->adapter
->ps_state
= PS_AWAKE
;
344 init_waitqueue_head(&priv
->adapter
->cmd_wait_q
);
347 static void btmrvl_free_adapter(struct btmrvl_private
*priv
)
349 skb_queue_purge(&priv
->adapter
->tx_queue
);
351 kfree(priv
->adapter
);
353 priv
->adapter
= NULL
;
356 static int btmrvl_send_frame(struct hci_dev
*hdev
, struct sk_buff
*skb
)
358 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
360 BT_DBG("type=%d, len=%d", skb
->pkt_type
, skb
->len
);
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
);
369 switch (bt_cb(skb
)->pkt_type
) {
370 case HCI_COMMAND_PKT
:
374 case HCI_ACLDATA_PKT
:
378 case HCI_SCODATA_PKT
:
383 skb_queue_tail(&priv
->adapter
->tx_queue
, skb
);
385 wake_up_interruptible(&priv
->main_thread
.wait_q
);
390 static int btmrvl_flush(struct hci_dev
*hdev
)
392 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
394 skb_queue_purge(&priv
->adapter
->tx_queue
);
399 static int btmrvl_close(struct hci_dev
*hdev
)
401 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
403 if (!test_and_clear_bit(HCI_RUNNING
, &hdev
->flags
))
406 skb_queue_purge(&priv
->adapter
->tx_queue
);
411 static int btmrvl_open(struct hci_dev
*hdev
)
413 set_bit(HCI_RUNNING
, &hdev
->flags
);
418 static int btmrvl_download_cal_data(struct btmrvl_private
*priv
,
428 print_hex_dump_bytes("Calibration data: ",
429 DUMP_PREFIX_OFFSET
, data
, BT_CAL_HDR_LEN
+ len
);
431 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_LOAD_CONFIG_DATA
, data
,
432 BT_CAL_HDR_LEN
+ len
);
434 BT_ERR("Failed to download caibration data\n");
439 static int btmrvl_cal_data_dt(struct btmrvl_private
*priv
)
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";
447 dt_node
= of_find_node_by_name(NULL
, name
);
451 ret
= of_property_read_u8_array(dt_node
, property
,
452 cal_data
+ BT_CAL_HDR_LEN
,
457 BT_DBG("Use cal data from device tree");
458 ret
= btmrvl_download_cal_data(priv
, cal_data
, BT_CAL_DATA_SIZE
);
460 BT_ERR("Fail to download calibrate data");
467 static int btmrvl_setup(struct hci_dev
*hdev
)
469 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
471 btmrvl_send_module_cfg_cmd(priv
, MODULE_BRINGUP_REQ
);
473 btmrvl_cal_data_dt(priv
);
475 priv
->btmrvl_dev
.psmode
= 1;
476 btmrvl_enable_ps(priv
);
478 priv
->btmrvl_dev
.gpio_gap
= 0xffff;
479 btmrvl_send_hscfg_cmd(priv
);
485 * This function handles the event generated by firmware, rx data
486 * received from firmware, and tx data sent from kernel.
488 static int btmrvl_service_main_thread(void *data
)
490 struct btmrvl_thread
*thread
= data
;
491 struct btmrvl_private
*priv
= thread
->priv
;
492 struct btmrvl_adapter
*adapter
= priv
->adapter
;
497 init_waitqueue_entry(&wait
, current
);
500 add_wait_queue(&thread
->wait_q
, &wait
);
502 set_current_state(TASK_INTERRUPTIBLE
);
503 if (kthread_should_stop()) {
504 BT_DBG("main_thread: break from main thread");
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...");
516 set_current_state(TASK_RUNNING
);
518 remove_wait_queue(&thread
->wait_q
, &wait
);
520 BT_DBG("main_thread woke up");
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
);
534 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
537 if (adapter
->ps_state
== PS_SLEEP
)
540 if (!priv
->btmrvl_dev
.tx_dnld_rdy
)
543 skb
= skb_dequeue(&adapter
->tx_queue
);
545 if (btmrvl_tx_pkt(priv
, skb
))
546 priv
->btmrvl_dev
.hcidev
->stat
.err_tx
++;
548 priv
->btmrvl_dev
.hcidev
->stat
.byte_tx
+= skb
->len
;
557 int btmrvl_register_hdev(struct btmrvl_private
*priv
)
559 struct hci_dev
*hdev
= NULL
;
562 hdev
= hci_alloc_dev();
564 BT_ERR("Can not allocate HCI device");
568 priv
->btmrvl_dev
.hcidev
= hdev
;
569 hci_set_drvdata(hdev
, priv
);
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
;
578 hdev
->dev_type
= priv
->btmrvl_dev
.dev_type
;
580 ret
= hci_register_dev(hdev
);
582 BT_ERR("Can not register HCI device");
583 goto err_hci_register_dev
;
586 #ifdef CONFIG_DEBUG_FS
587 btmrvl_debugfs_init(hdev
);
592 err_hci_register_dev
:
596 /* Stop the thread servicing the interrupts */
597 kthread_stop(priv
->main_thread
.task
);
599 btmrvl_free_adapter(priv
);
604 EXPORT_SYMBOL_GPL(btmrvl_register_hdev
);
606 struct btmrvl_private
*btmrvl_add_card(void *card
)
608 struct btmrvl_private
*priv
;
610 priv
= kzalloc(sizeof(*priv
), GFP_KERNEL
);
612 BT_ERR("Can not allocate priv");
616 priv
->adapter
= kzalloc(sizeof(*priv
->adapter
), GFP_KERNEL
);
617 if (!priv
->adapter
) {
618 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
622 btmrvl_init_adapter(priv
);
624 BT_DBG("Starting kthread...");
625 priv
->main_thread
.priv
= priv
;
626 spin_lock_init(&priv
->driver_lock
);
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");
632 priv
->btmrvl_dev
.card
= card
;
633 priv
->btmrvl_dev
.tx_dnld_rdy
= true;
643 EXPORT_SYMBOL_GPL(btmrvl_add_card
);
645 int btmrvl_remove_card(struct btmrvl_private
*priv
)
647 struct hci_dev
*hdev
;
649 hdev
= priv
->btmrvl_dev
.hcidev
;
651 wake_up_interruptible(&priv
->adapter
->cmd_wait_q
);
653 kthread_stop(priv
->main_thread
.task
);
655 #ifdef CONFIG_DEBUG_FS
656 btmrvl_debugfs_remove(hdev
);
659 hci_unregister_dev(hdev
);
663 priv
->btmrvl_dev
.hcidev
= NULL
;
665 btmrvl_free_adapter(priv
);
671 EXPORT_SYMBOL_GPL(btmrvl_remove_card
);
673 MODULE_AUTHOR("Marvell International Ltd.");
674 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION
);
675 MODULE_VERSION(VERSION
);
676 MODULE_LICENSE("GPL v2");