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 skb
= bt_skb_alloc(HCI_COMMAND_HDR_SIZE
+ len
, GFP_ATOMIC
);
183 BT_ERR("No free skb");
187 hdr
= (struct hci_command_hdr
*)skb_put(skb
, HCI_COMMAND_HDR_SIZE
);
188 hdr
->opcode
= cpu_to_le16(opcode
);
192 memcpy(skb_put(skb
, len
), param
, len
);
194 bt_cb(skb
)->pkt_type
= MRVL_VENDOR_PKT
;
196 skb_queue_head(&priv
->adapter
->tx_queue
, skb
);
198 priv
->btmrvl_dev
.sendcmdflag
= true;
200 priv
->adapter
->cmd_complete
= false;
202 wake_up_interruptible(&priv
->main_thread
.wait_q
);
204 if (!wait_event_interruptible_timeout(priv
->adapter
->cmd_wait_q
,
205 priv
->adapter
->cmd_complete
,
206 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP
)))
212 int btmrvl_send_module_cfg_cmd(struct btmrvl_private
*priv
, u8 subcmd
)
216 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_MODULE_CFG_REQ
, &subcmd
, 1);
218 BT_ERR("module_cfg_cmd(%x) failed", subcmd
);
222 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd
);
224 int btmrvl_pscan_window_reporting(struct btmrvl_private
*priv
, u8 subcmd
)
226 struct btmrvl_sdio_card
*card
= priv
->btmrvl_dev
.card
;
229 if (!card
->support_pscan_win_report
)
232 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_PSCAN_WIN_REPORT_ENABLE
,
235 BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret
);
239 EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting
);
241 int btmrvl_send_hscfg_cmd(struct btmrvl_private
*priv
)
246 param
[0] = (priv
->btmrvl_dev
.gpio_gap
& 0xff00) >> 8;
247 param
[1] = (u8
) (priv
->btmrvl_dev
.gpio_gap
& 0x00ff);
249 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
252 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_HOST_SLEEP_CONFIG
, param
, 2);
254 BT_ERR("HSCFG command failed");
258 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd
);
260 int btmrvl_enable_ps(struct btmrvl_private
*priv
)
265 if (priv
->btmrvl_dev
.psmode
)
266 param
= BT_PS_ENABLE
;
268 param
= BT_PS_DISABLE
;
270 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_AUTO_SLEEP_MODE
, ¶m
, 1);
272 BT_ERR("PSMODE command failed");
276 EXPORT_SYMBOL_GPL(btmrvl_enable_ps
);
278 int btmrvl_enable_hs(struct btmrvl_private
*priv
)
280 struct btmrvl_adapter
*adapter
= priv
->adapter
;
283 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_HOST_SLEEP_ENABLE
, NULL
, 0);
285 BT_ERR("Host sleep enable command failed");
289 ret
= wait_event_interruptible_timeout(adapter
->event_hs_wait_q
,
291 msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED
));
293 BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d",
294 ret
, adapter
->hs_state
, adapter
->ps_state
,
295 adapter
->wakeup_tries
);
297 BT_ERR("hs_enable timeout: %d,%d,%d", adapter
->hs_state
,
298 adapter
->ps_state
, adapter
->wakeup_tries
);
301 BT_DBG("host sleep enabled: %d,%d,%d", adapter
->hs_state
,
302 adapter
->ps_state
, adapter
->wakeup_tries
);
308 EXPORT_SYMBOL_GPL(btmrvl_enable_hs
);
310 int btmrvl_prepare_command(struct btmrvl_private
*priv
)
314 if (priv
->btmrvl_dev
.hscfgcmd
) {
315 priv
->btmrvl_dev
.hscfgcmd
= 0;
316 btmrvl_send_hscfg_cmd(priv
);
319 if (priv
->btmrvl_dev
.pscmd
) {
320 priv
->btmrvl_dev
.pscmd
= 0;
321 btmrvl_enable_ps(priv
);
324 if (priv
->btmrvl_dev
.hscmd
) {
325 priv
->btmrvl_dev
.hscmd
= 0;
327 if (priv
->btmrvl_dev
.hsmode
) {
328 ret
= btmrvl_enable_hs(priv
);
330 ret
= priv
->hw_wakeup_firmware(priv
);
331 priv
->adapter
->hs_state
= HS_DEACTIVATED
;
332 BT_DBG("BT: HS DEACTIVATED due to host activity!");
339 void btmrvl_firmware_dump(struct btmrvl_private
*priv
)
341 if (priv
->firmware_dump
)
342 priv
->firmware_dump(priv
);
345 static int btmrvl_tx_pkt(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
349 if (!skb
|| !skb
->data
)
352 if (!skb
->len
|| ((skb
->len
+ BTM_HEADER_LEN
) > BTM_UPLD_SIZE
)) {
353 BT_ERR("Tx Error: Bad skb length %d : %d",
354 skb
->len
, BTM_UPLD_SIZE
);
358 if (skb_headroom(skb
) < BTM_HEADER_LEN
) {
359 struct sk_buff
*tmp
= skb
;
361 skb
= skb_realloc_headroom(skb
, BTM_HEADER_LEN
);
363 BT_ERR("Tx Error: realloc_headroom failed %d",
372 skb_push(skb
, BTM_HEADER_LEN
);
374 /* header type: byte[3]
375 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
376 * header length: byte[2][1][0]
379 skb
->data
[0] = (skb
->len
& 0x0000ff);
380 skb
->data
[1] = (skb
->len
& 0x00ff00) >> 8;
381 skb
->data
[2] = (skb
->len
& 0xff0000) >> 16;
382 skb
->data
[3] = bt_cb(skb
)->pkt_type
;
384 if (priv
->hw_host_to_card
)
385 ret
= priv
->hw_host_to_card(priv
, skb
->data
, skb
->len
);
390 static void btmrvl_init_adapter(struct btmrvl_private
*priv
)
394 skb_queue_head_init(&priv
->adapter
->tx_queue
);
396 priv
->adapter
->ps_state
= PS_AWAKE
;
398 buf_size
= ALIGN_SZ(SDIO_BLOCK_SIZE
, BTSDIO_DMA_ALIGN
);
399 priv
->adapter
->hw_regs_buf
= kzalloc(buf_size
, GFP_KERNEL
);
400 if (!priv
->adapter
->hw_regs_buf
) {
401 priv
->adapter
->hw_regs
= NULL
;
402 BT_ERR("Unable to allocate buffer for hw_regs.");
404 priv
->adapter
->hw_regs
=
405 (u8
*)ALIGN_ADDR(priv
->adapter
->hw_regs_buf
,
407 BT_DBG("hw_regs_buf=%p hw_regs=%p",
408 priv
->adapter
->hw_regs_buf
, priv
->adapter
->hw_regs
);
411 init_waitqueue_head(&priv
->adapter
->cmd_wait_q
);
412 init_waitqueue_head(&priv
->adapter
->event_hs_wait_q
);
415 static void btmrvl_free_adapter(struct btmrvl_private
*priv
)
417 skb_queue_purge(&priv
->adapter
->tx_queue
);
419 kfree(priv
->adapter
->hw_regs_buf
);
420 kfree(priv
->adapter
);
422 priv
->adapter
= NULL
;
425 static int btmrvl_send_frame(struct hci_dev
*hdev
, struct sk_buff
*skb
)
427 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
429 BT_DBG("type=%d, len=%d", skb
->pkt_type
, skb
->len
);
431 if (!test_bit(HCI_RUNNING
, &hdev
->flags
)) {
432 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev
->flags
);
433 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET
,
434 skb
->data
, skb
->len
);
438 switch (bt_cb(skb
)->pkt_type
) {
439 case HCI_COMMAND_PKT
:
443 case HCI_ACLDATA_PKT
:
447 case HCI_SCODATA_PKT
:
452 skb_queue_tail(&priv
->adapter
->tx_queue
, skb
);
454 wake_up_interruptible(&priv
->main_thread
.wait_q
);
459 static int btmrvl_flush(struct hci_dev
*hdev
)
461 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
463 skb_queue_purge(&priv
->adapter
->tx_queue
);
468 static int btmrvl_close(struct hci_dev
*hdev
)
470 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
472 if (!test_and_clear_bit(HCI_RUNNING
, &hdev
->flags
))
475 skb_queue_purge(&priv
->adapter
->tx_queue
);
480 static int btmrvl_open(struct hci_dev
*hdev
)
482 set_bit(HCI_RUNNING
, &hdev
->flags
);
487 static int btmrvl_download_cal_data(struct btmrvl_private
*priv
,
497 print_hex_dump_bytes("Calibration data: ",
498 DUMP_PREFIX_OFFSET
, data
, BT_CAL_HDR_LEN
+ len
);
500 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_LOAD_CONFIG_DATA
, data
,
501 BT_CAL_HDR_LEN
+ len
);
503 BT_ERR("Failed to download caibration data");
508 static int btmrvl_check_device_tree(struct btmrvl_private
*priv
)
510 struct device_node
*dt_node
;
511 u8 cal_data
[BT_CAL_HDR_LEN
+ BT_CAL_DATA_SIZE
];
515 for_each_compatible_node(dt_node
, NULL
, "btmrvl,cfgdata") {
516 ret
= of_property_read_u32(dt_node
, "btmrvl,gpio-gap", &val
);
518 priv
->btmrvl_dev
.gpio_gap
= val
;
520 ret
= of_property_read_u8_array(dt_node
, "btmrvl,cal-data",
521 cal_data
+ BT_CAL_HDR_LEN
,
526 BT_DBG("Use cal data from device tree");
527 ret
= btmrvl_download_cal_data(priv
, cal_data
,
530 BT_ERR("Fail to download calibrate data");
538 static int btmrvl_setup(struct hci_dev
*hdev
)
540 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
542 btmrvl_send_module_cfg_cmd(priv
, MODULE_BRINGUP_REQ
);
544 priv
->btmrvl_dev
.gpio_gap
= 0xffff;
546 btmrvl_check_device_tree(priv
);
548 btmrvl_pscan_window_reporting(priv
, 0x01);
550 priv
->btmrvl_dev
.psmode
= 1;
551 btmrvl_enable_ps(priv
);
553 btmrvl_send_hscfg_cmd(priv
);
558 static int btmrvl_set_bdaddr(struct hci_dev
*hdev
, const bdaddr_t
*bdaddr
)
564 buf
[0] = MRVL_VENDOR_PKT
;
565 buf
[1] = sizeof(bdaddr_t
);
566 memcpy(buf
+ 2, bdaddr
, sizeof(bdaddr_t
));
568 skb
= __hci_cmd_sync(hdev
, BT_CMD_SET_BDADDR
, sizeof(buf
), buf
,
572 BT_ERR("%s: changing btmrvl device address failed (%ld)",
582 * This function handles the event generated by firmware, rx data
583 * received from firmware, and tx data sent from kernel.
585 static int btmrvl_service_main_thread(void *data
)
587 struct btmrvl_thread
*thread
= data
;
588 struct btmrvl_private
*priv
= thread
->priv
;
589 struct btmrvl_adapter
*adapter
= priv
->adapter
;
594 init_waitqueue_entry(&wait
, current
);
597 add_wait_queue(&thread
->wait_q
, &wait
);
599 set_current_state(TASK_INTERRUPTIBLE
);
600 if (kthread_should_stop()) {
601 BT_DBG("main_thread: break from main thread");
605 if (adapter
->wakeup_tries
||
606 ((!adapter
->int_count
) &&
607 (!priv
->btmrvl_dev
.tx_dnld_rdy
||
608 skb_queue_empty(&adapter
->tx_queue
)))) {
609 BT_DBG("main_thread is sleeping...");
613 set_current_state(TASK_RUNNING
);
615 remove_wait_queue(&thread
->wait_q
, &wait
);
617 BT_DBG("main_thread woke up");
619 if (kthread_should_stop()) {
620 BT_DBG("main_thread: break from main thread");
624 spin_lock_irqsave(&priv
->driver_lock
, flags
);
625 if (adapter
->int_count
) {
626 adapter
->int_count
= 0;
627 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
628 priv
->hw_process_int_status(priv
);
629 } else if (adapter
->ps_state
== PS_SLEEP
&&
630 !skb_queue_empty(&adapter
->tx_queue
)) {
631 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
632 adapter
->wakeup_tries
++;
633 priv
->hw_wakeup_firmware(priv
);
636 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
639 if (adapter
->ps_state
== PS_SLEEP
)
642 if (!priv
->btmrvl_dev
.tx_dnld_rdy
)
645 skb
= skb_dequeue(&adapter
->tx_queue
);
647 if (btmrvl_tx_pkt(priv
, skb
))
648 priv
->btmrvl_dev
.hcidev
->stat
.err_tx
++;
650 priv
->btmrvl_dev
.hcidev
->stat
.byte_tx
+= skb
->len
;
659 int btmrvl_register_hdev(struct btmrvl_private
*priv
)
661 struct hci_dev
*hdev
= NULL
;
664 hdev
= hci_alloc_dev();
666 BT_ERR("Can not allocate HCI device");
670 priv
->btmrvl_dev
.hcidev
= hdev
;
671 hci_set_drvdata(hdev
, priv
);
673 hdev
->bus
= HCI_SDIO
;
674 hdev
->open
= btmrvl_open
;
675 hdev
->close
= btmrvl_close
;
676 hdev
->flush
= btmrvl_flush
;
677 hdev
->send
= btmrvl_send_frame
;
678 hdev
->setup
= btmrvl_setup
;
679 hdev
->set_bdaddr
= btmrvl_set_bdaddr
;
681 hdev
->dev_type
= priv
->btmrvl_dev
.dev_type
;
683 ret
= hci_register_dev(hdev
);
685 BT_ERR("Can not register HCI device");
686 goto err_hci_register_dev
;
689 #ifdef CONFIG_DEBUG_FS
690 btmrvl_debugfs_init(hdev
);
695 err_hci_register_dev
:
699 /* Stop the thread servicing the interrupts */
700 kthread_stop(priv
->main_thread
.task
);
702 btmrvl_free_adapter(priv
);
707 EXPORT_SYMBOL_GPL(btmrvl_register_hdev
);
709 struct btmrvl_private
*btmrvl_add_card(void *card
)
711 struct btmrvl_private
*priv
;
713 priv
= kzalloc(sizeof(*priv
), GFP_KERNEL
);
715 BT_ERR("Can not allocate priv");
719 priv
->adapter
= kzalloc(sizeof(*priv
->adapter
), GFP_KERNEL
);
720 if (!priv
->adapter
) {
721 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
725 btmrvl_init_adapter(priv
);
727 BT_DBG("Starting kthread...");
728 priv
->main_thread
.priv
= priv
;
729 spin_lock_init(&priv
->driver_lock
);
731 init_waitqueue_head(&priv
->main_thread
.wait_q
);
732 priv
->main_thread
.task
= kthread_run(btmrvl_service_main_thread
,
733 &priv
->main_thread
, "btmrvl_main_service");
734 if (IS_ERR(priv
->main_thread
.task
))
737 priv
->btmrvl_dev
.card
= card
;
738 priv
->btmrvl_dev
.tx_dnld_rdy
= true;
743 btmrvl_free_adapter(priv
);
751 EXPORT_SYMBOL_GPL(btmrvl_add_card
);
753 int btmrvl_remove_card(struct btmrvl_private
*priv
)
755 struct hci_dev
*hdev
;
757 hdev
= priv
->btmrvl_dev
.hcidev
;
759 wake_up_interruptible(&priv
->adapter
->cmd_wait_q
);
760 wake_up_interruptible(&priv
->adapter
->event_hs_wait_q
);
762 kthread_stop(priv
->main_thread
.task
);
764 #ifdef CONFIG_DEBUG_FS
765 btmrvl_debugfs_remove(hdev
);
768 hci_unregister_dev(hdev
);
772 priv
->btmrvl_dev
.hcidev
= NULL
;
774 btmrvl_free_adapter(priv
);
780 EXPORT_SYMBOL_GPL(btmrvl_remove_card
);
782 MODULE_AUTHOR("Marvell International Ltd.");
783 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION
);
784 MODULE_VERSION(VERSION
);
785 MODULE_LICENSE("GPL v2");