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
);
57 ocf
= hci_opcode_ocf(opcode
);
58 ogf
= hci_opcode_ogf(opcode
);
60 if (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 ocf 0x%4.4x",
76 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt
);
78 int btmrvl_process_event(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
80 struct btmrvl_adapter
*adapter
= priv
->adapter
;
81 struct btmrvl_event
*event
;
84 event
= (struct btmrvl_event
*) skb
->data
;
85 if (event
->ec
!= 0xff) {
86 BT_DBG("Not Marvell Event=%x", event
->ec
);
91 switch (event
->data
[0]) {
92 case BT_CMD_AUTO_SLEEP_MODE
:
93 if (!event
->data
[2]) {
94 if (event
->data
[1] == BT_PS_ENABLE
)
99 (adapter
->psmode
) ? "Enable" : "Disable");
101 BT_DBG("PS Mode command failed");
105 case BT_CMD_HOST_SLEEP_CONFIG
:
107 BT_DBG("gpio=%x, gap=%x", event
->data
[1],
110 BT_DBG("HSCFG command failed");
113 case BT_CMD_HOST_SLEEP_ENABLE
:
114 if (!event
->data
[1]) {
115 adapter
->hs_state
= HS_ACTIVATED
;
117 adapter
->ps_state
= PS_SLEEP
;
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 static int btmrvl_send_sync_cmd(struct btmrvl_private
*priv
, u16 cmd_no
,
170 const void *param
, u8 len
)
173 struct hci_command_hdr
*hdr
;
175 skb
= bt_skb_alloc(HCI_COMMAND_HDR_SIZE
+ len
, GFP_ATOMIC
);
177 BT_ERR("No free skb");
181 hdr
= (struct hci_command_hdr
*)skb_put(skb
, HCI_COMMAND_HDR_SIZE
);
182 hdr
->opcode
= cpu_to_le16(hci_opcode_pack(OGF
, cmd_no
));
186 memcpy(skb_put(skb
, len
), param
, len
);
188 bt_cb(skb
)->pkt_type
= MRVL_VENDOR_PKT
;
190 skb
->dev
= (void *) priv
->btmrvl_dev
.hcidev
;
191 skb_queue_head(&priv
->adapter
->tx_queue
, skb
);
193 priv
->btmrvl_dev
.sendcmdflag
= true;
195 priv
->adapter
->cmd_complete
= false;
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
)))
207 int btmrvl_send_module_cfg_cmd(struct btmrvl_private
*priv
, int subcmd
)
211 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_MODULE_CFG_REQ
, &subcmd
, 1);
213 BT_ERR("module_cfg_cmd(%x) failed\n", subcmd
);
217 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd
);
219 int btmrvl_send_hscfg_cmd(struct btmrvl_private
*priv
)
224 param
[0] = (priv
->btmrvl_dev
.gpio_gap
& 0xff00) >> 8;
225 param
[1] = (u8
) (priv
->btmrvl_dev
.gpio_gap
& 0x00ff);
227 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
230 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_HOST_SLEEP_CONFIG
, param
, 2);
232 BT_ERR("HSCFG command failed\n");
236 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd
);
238 int btmrvl_enable_ps(struct btmrvl_private
*priv
)
243 if (priv
->btmrvl_dev
.psmode
)
244 param
= BT_PS_ENABLE
;
246 param
= BT_PS_DISABLE
;
248 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_AUTO_SLEEP_MODE
, ¶m
, 1);
250 BT_ERR("PSMODE command failed\n");
254 EXPORT_SYMBOL_GPL(btmrvl_enable_ps
);
256 int btmrvl_enable_hs(struct btmrvl_private
*priv
)
260 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_HOST_SLEEP_ENABLE
, NULL
, 0);
262 BT_ERR("Host sleep enable command failed\n");
266 EXPORT_SYMBOL_GPL(btmrvl_enable_hs
);
268 int btmrvl_prepare_command(struct btmrvl_private
*priv
)
272 if (priv
->btmrvl_dev
.hscfgcmd
) {
273 priv
->btmrvl_dev
.hscfgcmd
= 0;
274 btmrvl_send_hscfg_cmd(priv
);
277 if (priv
->btmrvl_dev
.pscmd
) {
278 priv
->btmrvl_dev
.pscmd
= 0;
279 btmrvl_enable_ps(priv
);
282 if (priv
->btmrvl_dev
.hscmd
) {
283 priv
->btmrvl_dev
.hscmd
= 0;
285 if (priv
->btmrvl_dev
.hsmode
) {
286 ret
= btmrvl_enable_hs(priv
);
288 ret
= priv
->hw_wakeup_firmware(priv
);
289 priv
->adapter
->hs_state
= HS_DEACTIVATED
;
296 static int btmrvl_tx_pkt(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
300 if (!skb
|| !skb
->data
)
303 if (!skb
->len
|| ((skb
->len
+ BTM_HEADER_LEN
) > BTM_UPLD_SIZE
)) {
304 BT_ERR("Tx Error: Bad skb length %d : %d",
305 skb
->len
, BTM_UPLD_SIZE
);
309 if (skb_headroom(skb
) < BTM_HEADER_LEN
) {
310 struct sk_buff
*tmp
= skb
;
312 skb
= skb_realloc_headroom(skb
, BTM_HEADER_LEN
);
314 BT_ERR("Tx Error: realloc_headroom failed %d",
323 skb_push(skb
, BTM_HEADER_LEN
);
325 /* header type: byte[3]
326 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
327 * header length: byte[2][1][0]
330 skb
->data
[0] = (skb
->len
& 0x0000ff);
331 skb
->data
[1] = (skb
->len
& 0x00ff00) >> 8;
332 skb
->data
[2] = (skb
->len
& 0xff0000) >> 16;
333 skb
->data
[3] = bt_cb(skb
)->pkt_type
;
335 if (priv
->hw_host_to_card
)
336 ret
= priv
->hw_host_to_card(priv
, skb
->data
, skb
->len
);
341 static void btmrvl_init_adapter(struct btmrvl_private
*priv
)
343 skb_queue_head_init(&priv
->adapter
->tx_queue
);
345 priv
->adapter
->ps_state
= PS_AWAKE
;
347 init_waitqueue_head(&priv
->adapter
->cmd_wait_q
);
350 static void btmrvl_free_adapter(struct btmrvl_private
*priv
)
352 skb_queue_purge(&priv
->adapter
->tx_queue
);
354 kfree(priv
->adapter
);
356 priv
->adapter
= NULL
;
359 static int btmrvl_send_frame(struct sk_buff
*skb
)
361 struct hci_dev
*hdev
= (struct hci_dev
*) skb
->dev
;
362 struct btmrvl_private
*priv
= NULL
;
364 BT_DBG("type=%d, len=%d", skb
->pkt_type
, skb
->len
);
367 BT_ERR("Frame for unknown HCI device");
371 priv
= hci_get_drvdata(hdev
);
373 if (!test_bit(HCI_RUNNING
, &hdev
->flags
)) {
374 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev
->flags
);
375 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET
,
376 skb
->data
, skb
->len
);
380 switch (bt_cb(skb
)->pkt_type
) {
381 case HCI_COMMAND_PKT
:
385 case HCI_ACLDATA_PKT
:
389 case HCI_SCODATA_PKT
:
394 skb_queue_tail(&priv
->adapter
->tx_queue
, skb
);
396 wake_up_interruptible(&priv
->main_thread
.wait_q
);
401 static int btmrvl_flush(struct hci_dev
*hdev
)
403 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
405 skb_queue_purge(&priv
->adapter
->tx_queue
);
410 static int btmrvl_close(struct hci_dev
*hdev
)
412 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
414 if (!test_and_clear_bit(HCI_RUNNING
, &hdev
->flags
))
417 skb_queue_purge(&priv
->adapter
->tx_queue
);
422 static int btmrvl_open(struct hci_dev
*hdev
)
424 set_bit(HCI_RUNNING
, &hdev
->flags
);
430 * This function parses provided calibration data input. It should contain
431 * hex bytes separated by space or new line character. Here is an example.
432 * 00 1C 01 37 FF FF FF FF 02 04 7F 01
433 * CE BA 00 00 00 2D C6 C0 00 00 00 00
436 static int btmrvl_parse_cal_cfg(const u8
*src
, u32 len
, u8
*dst
, u32 dst_size
)
444 while ((s
- src
) <= len
- 2) {
451 if ((d
- dst
) >= dst_size
) {
452 BT_ERR("calibration data file too big!!!");
458 ret
= kstrtou8(tmp
, 16, d
++);
473 static int btmrvl_load_cal_data(struct btmrvl_private
*priv
,
477 u8 data
[BT_CMD_DATA_SIZE
];
482 data
[3] = BT_CMD_DATA_SIZE
- 4;
484 /* Swap cal-data bytes. Each four bytes are swapped. Considering 4
485 * byte SDIO header offset, mapping of input and output bytes will be
486 * {3, 2, 1, 0} -> {0+4, 1+4, 2+4, 3+4},
487 * {7, 6, 5, 4} -> {4+4, 5+4, 6+4, 7+4} */
488 for (i
= 4; i
< BT_CMD_DATA_SIZE
; i
++)
489 data
[i
] = config_data
[(i
/ 4) * 8 - 1 - i
];
491 print_hex_dump_bytes("Calibration data: ",
492 DUMP_PREFIX_OFFSET
, data
, BT_CMD_DATA_SIZE
);
494 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_LOAD_CONFIG_DATA
, data
,
497 BT_ERR("Failed to download caibration data\n");
503 btmrvl_process_cal_cfg(struct btmrvl_private
*priv
, u8
*data
, u32 size
)
505 u8 cal_data
[BT_CAL_DATA_SIZE
];
508 ret
= btmrvl_parse_cal_cfg(data
, size
, cal_data
, sizeof(cal_data
));
512 ret
= btmrvl_load_cal_data(priv
, cal_data
);
514 BT_ERR("Fail to load calibrate data");
521 static int btmrvl_cal_data_config(struct btmrvl_private
*priv
)
523 const struct firmware
*cfg
;
525 const char *cal_data
= priv
->btmrvl_dev
.cal_data
;
530 ret
= request_firmware(&cfg
, cal_data
, priv
->btmrvl_dev
.dev
);
532 BT_DBG("Failed to get %s file, skipping cal data download",
537 ret
= btmrvl_process_cal_cfg(priv
, (u8
*)cfg
->data
, cfg
->size
);
538 release_firmware(cfg
);
542 static int btmrvl_setup(struct hci_dev
*hdev
)
544 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
546 btmrvl_send_module_cfg_cmd(priv
, MODULE_BRINGUP_REQ
);
548 if (btmrvl_cal_data_config(priv
))
549 BT_ERR("Set cal data failed");
551 priv
->btmrvl_dev
.psmode
= 1;
552 btmrvl_enable_ps(priv
);
554 priv
->btmrvl_dev
.gpio_gap
= 0xffff;
555 btmrvl_send_hscfg_cmd(priv
);
561 * This function handles the event generated by firmware, rx data
562 * received from firmware, and tx data sent from kernel.
564 static int btmrvl_service_main_thread(void *data
)
566 struct btmrvl_thread
*thread
= data
;
567 struct btmrvl_private
*priv
= thread
->priv
;
568 struct btmrvl_adapter
*adapter
= priv
->adapter
;
573 init_waitqueue_entry(&wait
, current
);
576 add_wait_queue(&thread
->wait_q
, &wait
);
578 set_current_state(TASK_INTERRUPTIBLE
);
579 if (kthread_should_stop()) {
580 BT_DBG("main_thread: break from main thread");
584 if (adapter
->wakeup_tries
||
585 ((!adapter
->int_count
) &&
586 (!priv
->btmrvl_dev
.tx_dnld_rdy
||
587 skb_queue_empty(&adapter
->tx_queue
)))) {
588 BT_DBG("main_thread is sleeping...");
592 set_current_state(TASK_RUNNING
);
594 remove_wait_queue(&thread
->wait_q
, &wait
);
596 BT_DBG("main_thread woke up");
598 spin_lock_irqsave(&priv
->driver_lock
, flags
);
599 if (adapter
->int_count
) {
600 adapter
->int_count
= 0;
601 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
602 priv
->hw_process_int_status(priv
);
603 } else if (adapter
->ps_state
== PS_SLEEP
&&
604 !skb_queue_empty(&adapter
->tx_queue
)) {
605 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
606 adapter
->wakeup_tries
++;
607 priv
->hw_wakeup_firmware(priv
);
610 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
613 if (adapter
->ps_state
== PS_SLEEP
)
616 if (!priv
->btmrvl_dev
.tx_dnld_rdy
)
619 skb
= skb_dequeue(&adapter
->tx_queue
);
621 if (btmrvl_tx_pkt(priv
, skb
))
622 priv
->btmrvl_dev
.hcidev
->stat
.err_tx
++;
624 priv
->btmrvl_dev
.hcidev
->stat
.byte_tx
+= skb
->len
;
633 int btmrvl_register_hdev(struct btmrvl_private
*priv
)
635 struct hci_dev
*hdev
= NULL
;
638 hdev
= hci_alloc_dev();
640 BT_ERR("Can not allocate HCI device");
644 priv
->btmrvl_dev
.hcidev
= hdev
;
645 hci_set_drvdata(hdev
, priv
);
647 hdev
->bus
= HCI_SDIO
;
648 hdev
->open
= btmrvl_open
;
649 hdev
->close
= btmrvl_close
;
650 hdev
->flush
= btmrvl_flush
;
651 hdev
->send
= btmrvl_send_frame
;
652 hdev
->setup
= btmrvl_setup
;
654 hdev
->dev_type
= priv
->btmrvl_dev
.dev_type
;
656 ret
= hci_register_dev(hdev
);
658 BT_ERR("Can not register HCI device");
659 goto err_hci_register_dev
;
662 #ifdef CONFIG_DEBUG_FS
663 btmrvl_debugfs_init(hdev
);
668 err_hci_register_dev
:
672 /* Stop the thread servicing the interrupts */
673 kthread_stop(priv
->main_thread
.task
);
675 btmrvl_free_adapter(priv
);
680 EXPORT_SYMBOL_GPL(btmrvl_register_hdev
);
682 struct btmrvl_private
*btmrvl_add_card(void *card
)
684 struct btmrvl_private
*priv
;
686 priv
= kzalloc(sizeof(*priv
), GFP_KERNEL
);
688 BT_ERR("Can not allocate priv");
692 priv
->adapter
= kzalloc(sizeof(*priv
->adapter
), GFP_KERNEL
);
693 if (!priv
->adapter
) {
694 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
698 btmrvl_init_adapter(priv
);
700 BT_DBG("Starting kthread...");
701 priv
->main_thread
.priv
= priv
;
702 spin_lock_init(&priv
->driver_lock
);
704 init_waitqueue_head(&priv
->main_thread
.wait_q
);
705 priv
->main_thread
.task
= kthread_run(btmrvl_service_main_thread
,
706 &priv
->main_thread
, "btmrvl_main_service");
708 priv
->btmrvl_dev
.card
= card
;
709 priv
->btmrvl_dev
.tx_dnld_rdy
= true;
719 EXPORT_SYMBOL_GPL(btmrvl_add_card
);
721 int btmrvl_remove_card(struct btmrvl_private
*priv
)
723 struct hci_dev
*hdev
;
725 hdev
= priv
->btmrvl_dev
.hcidev
;
727 wake_up_interruptible(&priv
->adapter
->cmd_wait_q
);
729 kthread_stop(priv
->main_thread
.task
);
731 #ifdef CONFIG_DEBUG_FS
732 btmrvl_debugfs_remove(hdev
);
735 hci_unregister_dev(hdev
);
739 priv
->btmrvl_dev
.hcidev
= NULL
;
741 btmrvl_free_adapter(priv
);
747 EXPORT_SYMBOL_GPL(btmrvl_remove_card
);
749 MODULE_AUTHOR("Marvell International Ltd.");
750 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION
);
751 MODULE_VERSION(VERSION
);
752 MODULE_LICENSE("GPL v2");