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_BREDR
;
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 bt_cb(skb
)->pkt_type
= 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 int btmrvl_pscan_window_reporting(struct btmrvl_private
*priv
, u8 subcmd
)
235 struct btmrvl_sdio_card
*card
= priv
->btmrvl_dev
.card
;
238 if (!card
->support_pscan_win_report
)
241 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_PSCAN_WIN_REPORT_ENABLE
,
244 BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret
);
248 EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting
);
250 int btmrvl_send_hscfg_cmd(struct btmrvl_private
*priv
)
255 param
[0] = (priv
->btmrvl_dev
.gpio_gap
& 0xff00) >> 8;
256 param
[1] = (u8
) (priv
->btmrvl_dev
.gpio_gap
& 0x00ff);
258 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
261 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_HOST_SLEEP_CONFIG
, param
, 2);
263 BT_ERR("HSCFG command failed");
267 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd
);
269 int btmrvl_enable_ps(struct btmrvl_private
*priv
)
274 if (priv
->btmrvl_dev
.psmode
)
275 param
= BT_PS_ENABLE
;
277 param
= BT_PS_DISABLE
;
279 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_AUTO_SLEEP_MODE
, ¶m
, 1);
281 BT_ERR("PSMODE command failed");
285 EXPORT_SYMBOL_GPL(btmrvl_enable_ps
);
287 int btmrvl_enable_hs(struct btmrvl_private
*priv
)
289 struct btmrvl_adapter
*adapter
= priv
->adapter
;
292 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_HOST_SLEEP_ENABLE
, NULL
, 0);
294 BT_ERR("Host sleep enable command failed");
298 ret
= wait_event_interruptible_timeout(adapter
->event_hs_wait_q
,
300 priv
->surprise_removed
,
301 WAIT_UNTIL_HS_STATE_CHANGED
);
302 if (ret
< 0 || priv
->surprise_removed
) {
303 BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d",
304 ret
, adapter
->hs_state
, adapter
->ps_state
,
305 adapter
->wakeup_tries
);
307 BT_ERR("hs_enable timeout: %d,%d,%d", adapter
->hs_state
,
308 adapter
->ps_state
, adapter
->wakeup_tries
);
311 BT_DBG("host sleep enabled: %d,%d,%d", adapter
->hs_state
,
312 adapter
->ps_state
, adapter
->wakeup_tries
);
318 EXPORT_SYMBOL_GPL(btmrvl_enable_hs
);
320 int btmrvl_prepare_command(struct btmrvl_private
*priv
)
324 if (priv
->btmrvl_dev
.hscfgcmd
) {
325 priv
->btmrvl_dev
.hscfgcmd
= 0;
326 btmrvl_send_hscfg_cmd(priv
);
329 if (priv
->btmrvl_dev
.pscmd
) {
330 priv
->btmrvl_dev
.pscmd
= 0;
331 btmrvl_enable_ps(priv
);
334 if (priv
->btmrvl_dev
.hscmd
) {
335 priv
->btmrvl_dev
.hscmd
= 0;
337 if (priv
->btmrvl_dev
.hsmode
) {
338 ret
= btmrvl_enable_hs(priv
);
340 ret
= priv
->hw_wakeup_firmware(priv
);
341 priv
->adapter
->hs_state
= HS_DEACTIVATED
;
342 BT_DBG("BT: HS DEACTIVATED due to host activity!");
349 void btmrvl_firmware_dump(struct btmrvl_private
*priv
)
351 if (priv
->firmware_dump
)
352 priv
->firmware_dump(priv
);
355 static int btmrvl_tx_pkt(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
359 if (!skb
|| !skb
->data
)
362 if (!skb
->len
|| ((skb
->len
+ BTM_HEADER_LEN
) > BTM_UPLD_SIZE
)) {
363 BT_ERR("Tx Error: Bad skb length %d : %d",
364 skb
->len
, BTM_UPLD_SIZE
);
368 if (skb_headroom(skb
) < BTM_HEADER_LEN
) {
369 struct sk_buff
*tmp
= skb
;
371 skb
= skb_realloc_headroom(skb
, BTM_HEADER_LEN
);
373 BT_ERR("Tx Error: realloc_headroom failed %d",
382 skb_push(skb
, BTM_HEADER_LEN
);
384 /* header type: byte[3]
385 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
386 * header length: byte[2][1][0]
389 skb
->data
[0] = (skb
->len
& 0x0000ff);
390 skb
->data
[1] = (skb
->len
& 0x00ff00) >> 8;
391 skb
->data
[2] = (skb
->len
& 0xff0000) >> 16;
392 skb
->data
[3] = bt_cb(skb
)->pkt_type
;
394 if (priv
->hw_host_to_card
)
395 ret
= priv
->hw_host_to_card(priv
, skb
->data
, skb
->len
);
400 static void btmrvl_init_adapter(struct btmrvl_private
*priv
)
404 skb_queue_head_init(&priv
->adapter
->tx_queue
);
406 priv
->adapter
->ps_state
= PS_AWAKE
;
408 buf_size
= ALIGN_SZ(SDIO_BLOCK_SIZE
, BTSDIO_DMA_ALIGN
);
409 priv
->adapter
->hw_regs_buf
= kzalloc(buf_size
, GFP_KERNEL
);
410 if (!priv
->adapter
->hw_regs_buf
) {
411 priv
->adapter
->hw_regs
= NULL
;
412 BT_ERR("Unable to allocate buffer for hw_regs.");
414 priv
->adapter
->hw_regs
=
415 (u8
*)ALIGN_ADDR(priv
->adapter
->hw_regs_buf
,
417 BT_DBG("hw_regs_buf=%p hw_regs=%p",
418 priv
->adapter
->hw_regs_buf
, priv
->adapter
->hw_regs
);
421 init_waitqueue_head(&priv
->adapter
->cmd_wait_q
);
422 init_waitqueue_head(&priv
->adapter
->event_hs_wait_q
);
425 static void btmrvl_free_adapter(struct btmrvl_private
*priv
)
427 skb_queue_purge(&priv
->adapter
->tx_queue
);
429 kfree(priv
->adapter
->hw_regs_buf
);
430 kfree(priv
->adapter
);
432 priv
->adapter
= NULL
;
435 static int btmrvl_send_frame(struct hci_dev
*hdev
, struct sk_buff
*skb
)
437 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
439 BT_DBG("type=%d, len=%d", skb
->pkt_type
, skb
->len
);
441 if (!test_bit(HCI_RUNNING
, &hdev
->flags
)) {
442 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev
->flags
);
443 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET
,
444 skb
->data
, skb
->len
);
448 switch (bt_cb(skb
)->pkt_type
) {
449 case HCI_COMMAND_PKT
:
453 case HCI_ACLDATA_PKT
:
457 case HCI_SCODATA_PKT
:
462 skb_queue_tail(&priv
->adapter
->tx_queue
, skb
);
464 wake_up_interruptible(&priv
->main_thread
.wait_q
);
469 static int btmrvl_flush(struct hci_dev
*hdev
)
471 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
473 skb_queue_purge(&priv
->adapter
->tx_queue
);
478 static int btmrvl_close(struct hci_dev
*hdev
)
480 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
482 if (!test_and_clear_bit(HCI_RUNNING
, &hdev
->flags
))
485 skb_queue_purge(&priv
->adapter
->tx_queue
);
490 static int btmrvl_open(struct hci_dev
*hdev
)
492 set_bit(HCI_RUNNING
, &hdev
->flags
);
497 static int btmrvl_download_cal_data(struct btmrvl_private
*priv
,
507 print_hex_dump_bytes("Calibration data: ",
508 DUMP_PREFIX_OFFSET
, data
, BT_CAL_HDR_LEN
+ len
);
510 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_LOAD_CONFIG_DATA
, data
,
511 BT_CAL_HDR_LEN
+ len
);
513 BT_ERR("Failed to download caibration data");
518 static int btmrvl_check_device_tree(struct btmrvl_private
*priv
)
520 struct device_node
*dt_node
;
521 u8 cal_data
[BT_CAL_HDR_LEN
+ BT_CAL_DATA_SIZE
];
525 for_each_compatible_node(dt_node
, NULL
, "btmrvl,cfgdata") {
526 ret
= of_property_read_u32(dt_node
, "btmrvl,gpio-gap", &val
);
528 priv
->btmrvl_dev
.gpio_gap
= val
;
530 ret
= of_property_read_u8_array(dt_node
, "btmrvl,cal-data",
531 cal_data
+ BT_CAL_HDR_LEN
,
536 BT_DBG("Use cal data from device tree");
537 ret
= btmrvl_download_cal_data(priv
, cal_data
,
540 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
= 0xffff;
559 btmrvl_check_device_tree(priv
);
561 btmrvl_pscan_window_reporting(priv
, 0x01);
563 priv
->btmrvl_dev
.psmode
= 1;
564 btmrvl_enable_ps(priv
);
566 btmrvl_send_hscfg_cmd(priv
);
571 static int btmrvl_set_bdaddr(struct hci_dev
*hdev
, const bdaddr_t
*bdaddr
)
577 buf
[0] = MRVL_VENDOR_PKT
;
578 buf
[1] = sizeof(bdaddr_t
);
579 memcpy(buf
+ 2, bdaddr
, sizeof(bdaddr_t
));
581 skb
= __hci_cmd_sync(hdev
, BT_CMD_SET_BDADDR
, sizeof(buf
), buf
,
585 BT_ERR("%s: changing btmrvl device address failed (%ld)",
595 * This function handles the event generated by firmware, rx data
596 * received from firmware, and tx data sent from kernel.
598 static int btmrvl_service_main_thread(void *data
)
600 struct btmrvl_thread
*thread
= data
;
601 struct btmrvl_private
*priv
= thread
->priv
;
602 struct btmrvl_adapter
*adapter
= priv
->adapter
;
607 init_waitqueue_entry(&wait
, current
);
610 add_wait_queue(&thread
->wait_q
, &wait
);
612 set_current_state(TASK_INTERRUPTIBLE
);
613 if (kthread_should_stop() || priv
->surprise_removed
) {
614 BT_DBG("main_thread: break from main thread");
618 if (adapter
->wakeup_tries
||
619 ((!adapter
->int_count
) &&
620 (!priv
->btmrvl_dev
.tx_dnld_rdy
||
621 skb_queue_empty(&adapter
->tx_queue
)))) {
622 BT_DBG("main_thread is sleeping...");
626 set_current_state(TASK_RUNNING
);
628 remove_wait_queue(&thread
->wait_q
, &wait
);
630 BT_DBG("main_thread woke up");
632 if (kthread_should_stop() || priv
->surprise_removed
) {
633 BT_DBG("main_thread: break from main thread");
637 spin_lock_irqsave(&priv
->driver_lock
, flags
);
638 if (adapter
->int_count
) {
639 adapter
->int_count
= 0;
640 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
641 priv
->hw_process_int_status(priv
);
642 } else if (adapter
->ps_state
== PS_SLEEP
&&
643 !skb_queue_empty(&adapter
->tx_queue
)) {
644 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
645 adapter
->wakeup_tries
++;
646 priv
->hw_wakeup_firmware(priv
);
649 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
652 if (adapter
->ps_state
== PS_SLEEP
)
655 if (!priv
->btmrvl_dev
.tx_dnld_rdy
)
658 skb
= skb_dequeue(&adapter
->tx_queue
);
660 if (btmrvl_tx_pkt(priv
, skb
))
661 priv
->btmrvl_dev
.hcidev
->stat
.err_tx
++;
663 priv
->btmrvl_dev
.hcidev
->stat
.byte_tx
+= skb
->len
;
672 int btmrvl_register_hdev(struct btmrvl_private
*priv
)
674 struct hci_dev
*hdev
= NULL
;
677 hdev
= hci_alloc_dev();
679 BT_ERR("Can not allocate HCI device");
683 priv
->btmrvl_dev
.hcidev
= hdev
;
684 hci_set_drvdata(hdev
, priv
);
686 hdev
->bus
= HCI_SDIO
;
687 hdev
->open
= btmrvl_open
;
688 hdev
->close
= btmrvl_close
;
689 hdev
->flush
= btmrvl_flush
;
690 hdev
->send
= btmrvl_send_frame
;
691 hdev
->setup
= btmrvl_setup
;
692 hdev
->set_bdaddr
= btmrvl_set_bdaddr
;
694 hdev
->dev_type
= priv
->btmrvl_dev
.dev_type
;
696 ret
= hci_register_dev(hdev
);
698 BT_ERR("Can not register HCI device");
699 goto err_hci_register_dev
;
702 #ifdef CONFIG_DEBUG_FS
703 btmrvl_debugfs_init(hdev
);
708 err_hci_register_dev
:
712 /* Stop the thread servicing the interrupts */
713 kthread_stop(priv
->main_thread
.task
);
715 btmrvl_free_adapter(priv
);
720 EXPORT_SYMBOL_GPL(btmrvl_register_hdev
);
722 struct btmrvl_private
*btmrvl_add_card(void *card
)
724 struct btmrvl_private
*priv
;
726 priv
= kzalloc(sizeof(*priv
), GFP_KERNEL
);
728 BT_ERR("Can not allocate priv");
732 priv
->adapter
= kzalloc(sizeof(*priv
->adapter
), GFP_KERNEL
);
733 if (!priv
->adapter
) {
734 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
738 btmrvl_init_adapter(priv
);
740 BT_DBG("Starting kthread...");
741 priv
->main_thread
.priv
= priv
;
742 spin_lock_init(&priv
->driver_lock
);
744 init_waitqueue_head(&priv
->main_thread
.wait_q
);
745 priv
->main_thread
.task
= kthread_run(btmrvl_service_main_thread
,
746 &priv
->main_thread
, "btmrvl_main_service");
747 if (IS_ERR(priv
->main_thread
.task
))
750 priv
->btmrvl_dev
.card
= card
;
751 priv
->btmrvl_dev
.tx_dnld_rdy
= true;
756 btmrvl_free_adapter(priv
);
764 EXPORT_SYMBOL_GPL(btmrvl_add_card
);
766 int btmrvl_remove_card(struct btmrvl_private
*priv
)
768 struct hci_dev
*hdev
;
770 hdev
= priv
->btmrvl_dev
.hcidev
;
772 wake_up_interruptible(&priv
->adapter
->cmd_wait_q
);
773 wake_up_interruptible(&priv
->adapter
->event_hs_wait_q
);
775 kthread_stop(priv
->main_thread
.task
);
777 #ifdef CONFIG_DEBUG_FS
778 btmrvl_debugfs_remove(hdev
);
781 hci_unregister_dev(hdev
);
785 priv
->btmrvl_dev
.hcidev
= NULL
;
787 btmrvl_free_adapter(priv
);
793 EXPORT_SYMBOL_GPL(btmrvl_remove_card
);
795 MODULE_AUTHOR("Marvell International Ltd.");
796 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION
);
797 MODULE_VERSION(VERSION
);
798 MODULE_LICENSE("GPL v2");