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>
25 #include <linux/mmc/sdio_func.h>
27 #include "btmrvl_drv.h"
28 #include "btmrvl_sdio.h"
33 * This function is called by interface specific interrupt handler.
34 * It updates Power Save & Host Sleep states, and wakes up the main
37 void btmrvl_interrupt(struct btmrvl_private
*priv
)
39 priv
->adapter
->ps_state
= PS_AWAKE
;
41 priv
->adapter
->wakeup_tries
= 0;
43 priv
->adapter
->int_count
++;
45 if (priv
->adapter
->hs_state
== HS_ACTIVATED
) {
46 BT_DBG("BT: HS DEACTIVATED in ISR!");
47 priv
->adapter
->hs_state
= HS_DEACTIVATED
;
50 wake_up_interruptible(&priv
->main_thread
.wait_q
);
52 EXPORT_SYMBOL_GPL(btmrvl_interrupt
);
54 bool btmrvl_check_evtpkt(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
56 struct hci_event_hdr
*hdr
= (void *) skb
->data
;
58 if (hdr
->evt
== HCI_EV_CMD_COMPLETE
) {
59 struct hci_ev_cmd_complete
*ec
;
62 ec
= (void *) (skb
->data
+ HCI_EVENT_HDR_SIZE
);
63 opcode
= __le16_to_cpu(ec
->opcode
);
65 if (priv
->btmrvl_dev
.sendcmdflag
) {
66 priv
->btmrvl_dev
.sendcmdflag
= false;
67 priv
->adapter
->cmd_complete
= true;
68 wake_up_interruptible(&priv
->adapter
->cmd_wait_q
);
70 if (hci_opcode_ogf(opcode
) == 0x3F) {
71 BT_DBG("vendor event skipped: opcode=%#4.4x",
81 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt
);
83 int btmrvl_process_event(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
85 struct btmrvl_adapter
*adapter
= priv
->adapter
;
86 struct btmrvl_event
*event
;
89 event
= (struct btmrvl_event
*) skb
->data
;
90 if (event
->ec
!= 0xff) {
91 BT_DBG("Not Marvell Event=%x", event
->ec
);
96 switch (event
->data
[0]) {
97 case BT_EVENT_AUTO_SLEEP_MODE
:
98 if (!event
->data
[2]) {
99 if (event
->data
[1] == BT_PS_ENABLE
)
104 (adapter
->psmode
) ? "Enable" : "Disable");
106 BT_DBG("PS Mode command failed");
110 case BT_EVENT_HOST_SLEEP_CONFIG
:
112 BT_DBG("gpio=%x, gap=%x", event
->data
[1],
115 BT_DBG("HSCFG command failed");
118 case BT_EVENT_HOST_SLEEP_ENABLE
:
119 if (!event
->data
[1]) {
120 adapter
->hs_state
= HS_ACTIVATED
;
122 adapter
->ps_state
= PS_SLEEP
;
123 wake_up_interruptible(&adapter
->event_hs_wait_q
);
124 BT_DBG("HS ACTIVATED!");
126 BT_DBG("HS Enable failed");
130 case BT_EVENT_MODULE_CFG_REQ
:
131 if (priv
->btmrvl_dev
.sendcmdflag
&&
132 event
->data
[1] == MODULE_BRINGUP_REQ
) {
134 ((event
->data
[2] == MODULE_BROUGHT_UP
) ||
135 (event
->data
[2] == MODULE_ALREADY_UP
)) ?
136 "Bring-up succeed" : "Bring-up failed");
138 if (event
->length
> 3 && event
->data
[3])
139 priv
->btmrvl_dev
.dev_type
= HCI_AMP
;
141 priv
->btmrvl_dev
.dev_type
= HCI_PRIMARY
;
143 BT_DBG("dev_type: %d", priv
->btmrvl_dev
.dev_type
);
144 } else if (priv
->btmrvl_dev
.sendcmdflag
&&
145 event
->data
[1] == MODULE_SHUTDOWN_REQ
) {
146 BT_DBG("EVENT:%s", (event
->data
[2]) ?
147 "Shutdown failed" : "Shutdown succeed");
149 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
154 case BT_EVENT_POWER_STATE
:
155 if (event
->data
[1] == BT_PS_SLEEP
)
156 adapter
->ps_state
= PS_SLEEP
;
158 (adapter
->ps_state
) ? "PS_SLEEP" : "PS_AWAKE");
162 BT_DBG("Unknown Event=%d", event
->data
[0]);
173 EXPORT_SYMBOL_GPL(btmrvl_process_event
);
175 static int btmrvl_send_sync_cmd(struct btmrvl_private
*priv
, u16 opcode
,
176 const void *param
, u8 len
)
179 struct hci_command_hdr
*hdr
;
181 if (priv
->surprise_removed
) {
182 BT_ERR("Card is removed");
186 skb
= bt_skb_alloc(HCI_COMMAND_HDR_SIZE
+ len
, GFP_ATOMIC
);
188 BT_ERR("No free skb");
192 hdr
= (struct hci_command_hdr
*)skb_put(skb
, HCI_COMMAND_HDR_SIZE
);
193 hdr
->opcode
= cpu_to_le16(opcode
);
197 memcpy(skb_put(skb
, len
), param
, len
);
199 hci_skb_pkt_type(skb
) = MRVL_VENDOR_PKT
;
201 skb_queue_head(&priv
->adapter
->tx_queue
, skb
);
203 priv
->btmrvl_dev
.sendcmdflag
= true;
205 priv
->adapter
->cmd_complete
= false;
207 wake_up_interruptible(&priv
->main_thread
.wait_q
);
209 if (!wait_event_interruptible_timeout(priv
->adapter
->cmd_wait_q
,
210 priv
->adapter
->cmd_complete
||
211 priv
->surprise_removed
,
212 WAIT_UNTIL_CMD_RESP
))
215 if (priv
->surprise_removed
)
221 int btmrvl_send_module_cfg_cmd(struct btmrvl_private
*priv
, u8 subcmd
)
225 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_MODULE_CFG_REQ
, &subcmd
, 1);
227 BT_ERR("module_cfg_cmd(%x) failed", subcmd
);
231 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd
);
233 static int btmrvl_enable_sco_routing_to_host(struct btmrvl_private
*priv
)
238 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_ROUTE_SCO_TO_HOST
, &subcmd
, 1);
240 BT_ERR("BT_CMD_ROUTE_SCO_TO_HOST command failed: %#x", ret
);
245 int btmrvl_pscan_window_reporting(struct btmrvl_private
*priv
, u8 subcmd
)
247 struct btmrvl_sdio_card
*card
= priv
->btmrvl_dev
.card
;
250 if (!card
->support_pscan_win_report
)
253 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_PSCAN_WIN_REPORT_ENABLE
,
256 BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret
);
260 EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting
);
262 int btmrvl_send_hscfg_cmd(struct btmrvl_private
*priv
)
267 param
[0] = (priv
->btmrvl_dev
.gpio_gap
& 0xff00) >> 8;
268 param
[1] = (u8
) (priv
->btmrvl_dev
.gpio_gap
& 0x00ff);
270 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
273 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_HOST_SLEEP_CONFIG
, param
, 2);
275 BT_ERR("HSCFG command failed");
279 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd
);
281 int btmrvl_enable_ps(struct btmrvl_private
*priv
)
286 if (priv
->btmrvl_dev
.psmode
)
287 param
= BT_PS_ENABLE
;
289 param
= BT_PS_DISABLE
;
291 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_AUTO_SLEEP_MODE
, ¶m
, 1);
293 BT_ERR("PSMODE command failed");
297 EXPORT_SYMBOL_GPL(btmrvl_enable_ps
);
299 int btmrvl_enable_hs(struct btmrvl_private
*priv
)
301 struct btmrvl_adapter
*adapter
= priv
->adapter
;
304 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_HOST_SLEEP_ENABLE
, NULL
, 0);
306 BT_ERR("Host sleep enable command failed");
310 ret
= wait_event_interruptible_timeout(adapter
->event_hs_wait_q
,
312 priv
->surprise_removed
,
313 WAIT_UNTIL_HS_STATE_CHANGED
);
314 if (ret
< 0 || priv
->surprise_removed
) {
315 BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d",
316 ret
, adapter
->hs_state
, adapter
->ps_state
,
317 adapter
->wakeup_tries
);
319 BT_ERR("hs_enable timeout: %d,%d,%d", adapter
->hs_state
,
320 adapter
->ps_state
, adapter
->wakeup_tries
);
323 BT_DBG("host sleep enabled: %d,%d,%d", adapter
->hs_state
,
324 adapter
->ps_state
, adapter
->wakeup_tries
);
330 EXPORT_SYMBOL_GPL(btmrvl_enable_hs
);
332 int btmrvl_prepare_command(struct btmrvl_private
*priv
)
336 if (priv
->btmrvl_dev
.hscfgcmd
) {
337 priv
->btmrvl_dev
.hscfgcmd
= 0;
338 btmrvl_send_hscfg_cmd(priv
);
341 if (priv
->btmrvl_dev
.pscmd
) {
342 priv
->btmrvl_dev
.pscmd
= 0;
343 btmrvl_enable_ps(priv
);
346 if (priv
->btmrvl_dev
.hscmd
) {
347 priv
->btmrvl_dev
.hscmd
= 0;
349 if (priv
->btmrvl_dev
.hsmode
) {
350 ret
= btmrvl_enable_hs(priv
);
352 ret
= priv
->hw_wakeup_firmware(priv
);
353 priv
->adapter
->hs_state
= HS_DEACTIVATED
;
354 BT_DBG("BT: HS DEACTIVATED due to host activity!");
361 void btmrvl_firmware_dump(struct btmrvl_private
*priv
)
363 if (priv
->firmware_dump
)
364 priv
->firmware_dump(priv
);
367 static int btmrvl_tx_pkt(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
371 if (!skb
|| !skb
->data
)
374 if (!skb
->len
|| ((skb
->len
+ BTM_HEADER_LEN
) > BTM_UPLD_SIZE
)) {
375 BT_ERR("Tx Error: Bad skb length %d : %d",
376 skb
->len
, BTM_UPLD_SIZE
);
380 skb_push(skb
, BTM_HEADER_LEN
);
382 /* header type: byte[3]
383 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
384 * header length: byte[2][1][0]
387 skb
->data
[0] = (skb
->len
& 0x0000ff);
388 skb
->data
[1] = (skb
->len
& 0x00ff00) >> 8;
389 skb
->data
[2] = (skb
->len
& 0xff0000) >> 16;
390 skb
->data
[3] = hci_skb_pkt_type(skb
);
392 if (priv
->hw_host_to_card
)
393 ret
= priv
->hw_host_to_card(priv
, skb
->data
, skb
->len
);
398 static void btmrvl_init_adapter(struct btmrvl_private
*priv
)
402 skb_queue_head_init(&priv
->adapter
->tx_queue
);
404 priv
->adapter
->ps_state
= PS_AWAKE
;
406 buf_size
= ALIGN_SZ(SDIO_BLOCK_SIZE
, BTSDIO_DMA_ALIGN
);
407 priv
->adapter
->hw_regs_buf
= kzalloc(buf_size
, GFP_KERNEL
);
408 if (!priv
->adapter
->hw_regs_buf
) {
409 priv
->adapter
->hw_regs
= NULL
;
410 BT_ERR("Unable to allocate buffer for hw_regs.");
412 priv
->adapter
->hw_regs
=
413 (u8
*)ALIGN_ADDR(priv
->adapter
->hw_regs_buf
,
415 BT_DBG("hw_regs_buf=%p hw_regs=%p",
416 priv
->adapter
->hw_regs_buf
, priv
->adapter
->hw_regs
);
419 init_waitqueue_head(&priv
->adapter
->cmd_wait_q
);
420 init_waitqueue_head(&priv
->adapter
->event_hs_wait_q
);
423 static void btmrvl_free_adapter(struct btmrvl_private
*priv
)
425 skb_queue_purge(&priv
->adapter
->tx_queue
);
427 kfree(priv
->adapter
->hw_regs_buf
);
428 kfree(priv
->adapter
);
430 priv
->adapter
= NULL
;
433 static int btmrvl_send_frame(struct hci_dev
*hdev
, struct sk_buff
*skb
)
435 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
437 BT_DBG("type=%d, len=%d", hci_skb_pkt_type(skb
), skb
->len
);
439 if (priv
->adapter
->is_suspending
|| priv
->adapter
->is_suspended
) {
440 BT_ERR("%s: Device is suspending or suspended", __func__
);
444 switch (hci_skb_pkt_type(skb
)) {
445 case HCI_COMMAND_PKT
:
449 case HCI_ACLDATA_PKT
:
453 case HCI_SCODATA_PKT
:
458 skb_queue_tail(&priv
->adapter
->tx_queue
, skb
);
460 if (!priv
->adapter
->is_suspended
)
461 wake_up_interruptible(&priv
->main_thread
.wait_q
);
466 static int btmrvl_flush(struct hci_dev
*hdev
)
468 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
470 skb_queue_purge(&priv
->adapter
->tx_queue
);
475 static int btmrvl_close(struct hci_dev
*hdev
)
477 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
479 skb_queue_purge(&priv
->adapter
->tx_queue
);
484 static int btmrvl_open(struct hci_dev
*hdev
)
489 static int btmrvl_download_cal_data(struct btmrvl_private
*priv
,
499 print_hex_dump_bytes("Calibration data: ",
500 DUMP_PREFIX_OFFSET
, data
, BT_CAL_HDR_LEN
+ len
);
502 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_LOAD_CONFIG_DATA
, data
,
503 BT_CAL_HDR_LEN
+ len
);
505 BT_ERR("Failed to download calibration data");
510 static int btmrvl_check_device_tree(struct btmrvl_private
*priv
)
512 struct device_node
*dt_node
;
513 struct btmrvl_sdio_card
*card
= priv
->btmrvl_dev
.card
;
514 u8 cal_data
[BT_CAL_HDR_LEN
+ BT_CAL_DATA_SIZE
];
518 if (card
->plt_of_node
) {
519 dt_node
= card
->plt_of_node
;
520 ret
= of_property_read_u16(dt_node
, "marvell,wakeup-pin",
523 gpio
= (priv
->btmrvl_dev
.gpio_gap
& 0xff00) >> 8;
525 ret
= of_property_read_u16(dt_node
, "marvell,wakeup-gap-ms",
528 gap
= (u8
)(priv
->btmrvl_dev
.gpio_gap
& 0x00ff);
530 priv
->btmrvl_dev
.gpio_gap
= (gpio
<< 8) + gap
;
532 ret
= of_property_read_u8_array(dt_node
, "marvell,cal-data",
533 cal_data
+ BT_CAL_HDR_LEN
,
538 BT_DBG("Use cal data from device tree");
539 ret
= btmrvl_download_cal_data(priv
, cal_data
,
542 BT_ERR("Fail to download calibrate data");
548 static int btmrvl_setup(struct hci_dev
*hdev
)
550 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
553 ret
= btmrvl_send_module_cfg_cmd(priv
, MODULE_BRINGUP_REQ
);
557 priv
->btmrvl_dev
.gpio_gap
= 0xfffe;
559 btmrvl_check_device_tree(priv
);
561 btmrvl_enable_sco_routing_to_host(priv
);
563 btmrvl_pscan_window_reporting(priv
, 0x01);
565 priv
->btmrvl_dev
.psmode
= 1;
566 btmrvl_enable_ps(priv
);
568 btmrvl_send_hscfg_cmd(priv
);
573 static int btmrvl_set_bdaddr(struct hci_dev
*hdev
, const bdaddr_t
*bdaddr
)
579 buf
[0] = MRVL_VENDOR_PKT
;
580 buf
[1] = sizeof(bdaddr_t
);
581 memcpy(buf
+ 2, bdaddr
, sizeof(bdaddr_t
));
583 skb
= __hci_cmd_sync(hdev
, BT_CMD_SET_BDADDR
, sizeof(buf
), buf
,
587 BT_ERR("%s: changing btmrvl device address failed (%ld)",
597 * This function handles the event generated by firmware, rx data
598 * received from firmware, and tx data sent from kernel.
600 static int btmrvl_service_main_thread(void *data
)
602 struct btmrvl_thread
*thread
= data
;
603 struct btmrvl_private
*priv
= thread
->priv
;
604 struct btmrvl_adapter
*adapter
= priv
->adapter
;
609 init_waitqueue_entry(&wait
, current
);
612 add_wait_queue(&thread
->wait_q
, &wait
);
614 set_current_state(TASK_INTERRUPTIBLE
);
615 if (kthread_should_stop() || priv
->surprise_removed
) {
616 BT_DBG("main_thread: break from main thread");
620 if (adapter
->wakeup_tries
||
621 ((!adapter
->int_count
) &&
622 (!priv
->btmrvl_dev
.tx_dnld_rdy
||
623 skb_queue_empty(&adapter
->tx_queue
)))) {
624 BT_DBG("main_thread is sleeping...");
628 set_current_state(TASK_RUNNING
);
630 remove_wait_queue(&thread
->wait_q
, &wait
);
632 BT_DBG("main_thread woke up");
634 if (kthread_should_stop() || priv
->surprise_removed
) {
635 BT_DBG("main_thread: break from main thread");
639 spin_lock_irqsave(&priv
->driver_lock
, flags
);
640 if (adapter
->int_count
) {
641 adapter
->int_count
= 0;
642 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
643 priv
->hw_process_int_status(priv
);
644 } else if (adapter
->ps_state
== PS_SLEEP
&&
645 !skb_queue_empty(&adapter
->tx_queue
)) {
646 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
647 adapter
->wakeup_tries
++;
648 priv
->hw_wakeup_firmware(priv
);
651 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
654 if (adapter
->ps_state
== PS_SLEEP
)
657 if (!priv
->btmrvl_dev
.tx_dnld_rdy
||
658 priv
->adapter
->is_suspended
)
661 skb
= skb_dequeue(&adapter
->tx_queue
);
663 if (btmrvl_tx_pkt(priv
, skb
))
664 priv
->btmrvl_dev
.hcidev
->stat
.err_tx
++;
666 priv
->btmrvl_dev
.hcidev
->stat
.byte_tx
+= skb
->len
;
675 int btmrvl_register_hdev(struct btmrvl_private
*priv
)
677 struct hci_dev
*hdev
= NULL
;
680 hdev
= hci_alloc_dev();
682 BT_ERR("Can not allocate HCI device");
686 priv
->btmrvl_dev
.hcidev
= hdev
;
687 hci_set_drvdata(hdev
, priv
);
689 hdev
->bus
= HCI_SDIO
;
690 hdev
->open
= btmrvl_open
;
691 hdev
->close
= btmrvl_close
;
692 hdev
->flush
= btmrvl_flush
;
693 hdev
->send
= btmrvl_send_frame
;
694 hdev
->setup
= btmrvl_setup
;
695 hdev
->set_bdaddr
= btmrvl_set_bdaddr
;
697 hdev
->dev_type
= priv
->btmrvl_dev
.dev_type
;
699 ret
= hci_register_dev(hdev
);
701 BT_ERR("Can not register HCI device");
702 goto err_hci_register_dev
;
705 #ifdef CONFIG_DEBUG_FS
706 btmrvl_debugfs_init(hdev
);
711 err_hci_register_dev
:
715 /* Stop the thread servicing the interrupts */
716 kthread_stop(priv
->main_thread
.task
);
718 btmrvl_free_adapter(priv
);
723 EXPORT_SYMBOL_GPL(btmrvl_register_hdev
);
725 struct btmrvl_private
*btmrvl_add_card(void *card
)
727 struct btmrvl_private
*priv
;
729 priv
= kzalloc(sizeof(*priv
), GFP_KERNEL
);
731 BT_ERR("Can not allocate priv");
735 priv
->adapter
= kzalloc(sizeof(*priv
->adapter
), GFP_KERNEL
);
736 if (!priv
->adapter
) {
737 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
741 btmrvl_init_adapter(priv
);
743 BT_DBG("Starting kthread...");
744 priv
->main_thread
.priv
= priv
;
745 spin_lock_init(&priv
->driver_lock
);
747 init_waitqueue_head(&priv
->main_thread
.wait_q
);
748 priv
->main_thread
.task
= kthread_run(btmrvl_service_main_thread
,
749 &priv
->main_thread
, "btmrvl_main_service");
750 if (IS_ERR(priv
->main_thread
.task
))
753 priv
->btmrvl_dev
.card
= card
;
754 priv
->btmrvl_dev
.tx_dnld_rdy
= true;
759 btmrvl_free_adapter(priv
);
767 EXPORT_SYMBOL_GPL(btmrvl_add_card
);
769 int btmrvl_remove_card(struct btmrvl_private
*priv
)
771 struct hci_dev
*hdev
;
773 hdev
= priv
->btmrvl_dev
.hcidev
;
775 wake_up_interruptible(&priv
->adapter
->cmd_wait_q
);
776 wake_up_interruptible(&priv
->adapter
->event_hs_wait_q
);
778 kthread_stop(priv
->main_thread
.task
);
780 #ifdef CONFIG_DEBUG_FS
781 btmrvl_debugfs_remove(hdev
);
784 hci_unregister_dev(hdev
);
788 priv
->btmrvl_dev
.hcidev
= NULL
;
790 btmrvl_free_adapter(priv
);
796 EXPORT_SYMBOL_GPL(btmrvl_remove_card
);
798 MODULE_AUTHOR("Marvell International Ltd.");
799 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION
);
800 MODULE_VERSION(VERSION
);
801 MODULE_LICENSE("GPL v2");