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"
27 #include "btmrvl_sdio.h"
32 * This function is called by interface specific interrupt handler.
33 * It updates Power Save & Host Sleep states, and wakes up the main
36 void btmrvl_interrupt(struct btmrvl_private
*priv
)
38 priv
->adapter
->ps_state
= PS_AWAKE
;
40 priv
->adapter
->wakeup_tries
= 0;
42 priv
->adapter
->int_count
++;
44 wake_up_interruptible(&priv
->main_thread
.wait_q
);
46 EXPORT_SYMBOL_GPL(btmrvl_interrupt
);
48 bool btmrvl_check_evtpkt(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
50 struct hci_event_hdr
*hdr
= (void *) skb
->data
;
52 if (hdr
->evt
== HCI_EV_CMD_COMPLETE
) {
53 struct hci_ev_cmd_complete
*ec
;
56 ec
= (void *) (skb
->data
+ HCI_EVENT_HDR_SIZE
);
57 opcode
= __le16_to_cpu(ec
->opcode
);
59 if (priv
->btmrvl_dev
.sendcmdflag
) {
60 priv
->btmrvl_dev
.sendcmdflag
= false;
61 priv
->adapter
->cmd_complete
= true;
62 wake_up_interruptible(&priv
->adapter
->cmd_wait_q
);
64 if (hci_opcode_ogf(opcode
) == 0x3F) {
65 BT_DBG("vendor event skipped: opcode=%#4.4x",
75 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt
);
77 int btmrvl_process_event(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
79 struct btmrvl_adapter
*adapter
= priv
->adapter
;
80 struct btmrvl_event
*event
;
83 event
= (struct btmrvl_event
*) skb
->data
;
84 if (event
->ec
!= 0xff) {
85 BT_DBG("Not Marvell Event=%x", event
->ec
);
90 switch (event
->data
[0]) {
91 case BT_EVENT_AUTO_SLEEP_MODE
:
92 if (!event
->data
[2]) {
93 if (event
->data
[1] == BT_PS_ENABLE
)
98 (adapter
->psmode
) ? "Enable" : "Disable");
100 BT_DBG("PS Mode command failed");
104 case BT_EVENT_HOST_SLEEP_CONFIG
:
106 BT_DBG("gpio=%x, gap=%x", event
->data
[1],
109 BT_DBG("HSCFG command failed");
112 case BT_EVENT_HOST_SLEEP_ENABLE
:
113 if (!event
->data
[1]) {
114 adapter
->hs_state
= HS_ACTIVATED
;
116 adapter
->ps_state
= PS_SLEEP
;
117 wake_up_interruptible(&adapter
->event_hs_wait_q
);
118 BT_DBG("HS ACTIVATED!");
120 BT_DBG("HS Enable failed");
124 case BT_EVENT_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 opcode
,
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(opcode
);
186 memcpy(skb_put(skb
, len
), param
, len
);
188 bt_cb(skb
)->pkt_type
= MRVL_VENDOR_PKT
;
190 skb_queue_head(&priv
->adapter
->tx_queue
, skb
);
192 priv
->btmrvl_dev
.sendcmdflag
= true;
194 priv
->adapter
->cmd_complete
= false;
196 wake_up_interruptible(&priv
->main_thread
.wait_q
);
198 if (!wait_event_interruptible_timeout(priv
->adapter
->cmd_wait_q
,
199 priv
->adapter
->cmd_complete
,
200 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP
)))
206 int btmrvl_send_module_cfg_cmd(struct btmrvl_private
*priv
, u8 subcmd
)
210 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_MODULE_CFG_REQ
, &subcmd
, 1);
212 BT_ERR("module_cfg_cmd(%x) failed\n", subcmd
);
216 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd
);
218 int btmrvl_pscan_window_reporting(struct btmrvl_private
*priv
, u8 subcmd
)
220 struct btmrvl_sdio_card
*card
= priv
->btmrvl_dev
.card
;
223 if (!card
->support_pscan_win_report
)
226 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_PSCAN_WIN_REPORT_ENABLE
,
229 BT_ERR("PSCAN_WIN_REPORT_ENABLE command failed: %#x", ret
);
233 EXPORT_SYMBOL_GPL(btmrvl_pscan_window_reporting
);
235 int btmrvl_send_hscfg_cmd(struct btmrvl_private
*priv
)
240 param
[0] = (priv
->btmrvl_dev
.gpio_gap
& 0xff00) >> 8;
241 param
[1] = (u8
) (priv
->btmrvl_dev
.gpio_gap
& 0x00ff);
243 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
246 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_HOST_SLEEP_CONFIG
, param
, 2);
248 BT_ERR("HSCFG command failed\n");
252 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd
);
254 int btmrvl_enable_ps(struct btmrvl_private
*priv
)
259 if (priv
->btmrvl_dev
.psmode
)
260 param
= BT_PS_ENABLE
;
262 param
= BT_PS_DISABLE
;
264 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_AUTO_SLEEP_MODE
, ¶m
, 1);
266 BT_ERR("PSMODE command failed\n");
270 EXPORT_SYMBOL_GPL(btmrvl_enable_ps
);
272 int btmrvl_enable_hs(struct btmrvl_private
*priv
)
274 struct btmrvl_adapter
*adapter
= priv
->adapter
;
277 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_HOST_SLEEP_ENABLE
, NULL
, 0);
279 BT_ERR("Host sleep enable command failed\n");
283 ret
= wait_event_interruptible_timeout(adapter
->event_hs_wait_q
,
285 msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED
));
287 BT_ERR("event_hs_wait_q terminated (%d): %d,%d,%d",
288 ret
, adapter
->hs_state
, adapter
->ps_state
,
289 adapter
->wakeup_tries
);
291 BT_ERR("hs_enable timeout: %d,%d,%d", adapter
->hs_state
,
292 adapter
->ps_state
, adapter
->wakeup_tries
);
295 BT_DBG("host sleep enabled: %d,%d,%d", adapter
->hs_state
,
296 adapter
->ps_state
, adapter
->wakeup_tries
);
302 EXPORT_SYMBOL_GPL(btmrvl_enable_hs
);
304 int btmrvl_prepare_command(struct btmrvl_private
*priv
)
308 if (priv
->btmrvl_dev
.hscfgcmd
) {
309 priv
->btmrvl_dev
.hscfgcmd
= 0;
310 btmrvl_send_hscfg_cmd(priv
);
313 if (priv
->btmrvl_dev
.pscmd
) {
314 priv
->btmrvl_dev
.pscmd
= 0;
315 btmrvl_enable_ps(priv
);
318 if (priv
->btmrvl_dev
.hscmd
) {
319 priv
->btmrvl_dev
.hscmd
= 0;
321 if (priv
->btmrvl_dev
.hsmode
) {
322 ret
= btmrvl_enable_hs(priv
);
324 ret
= priv
->hw_wakeup_firmware(priv
);
325 priv
->adapter
->hs_state
= HS_DEACTIVATED
;
332 static int btmrvl_tx_pkt(struct btmrvl_private
*priv
, struct sk_buff
*skb
)
336 if (!skb
|| !skb
->data
)
339 if (!skb
->len
|| ((skb
->len
+ BTM_HEADER_LEN
) > BTM_UPLD_SIZE
)) {
340 BT_ERR("Tx Error: Bad skb length %d : %d",
341 skb
->len
, BTM_UPLD_SIZE
);
345 if (skb_headroom(skb
) < BTM_HEADER_LEN
) {
346 struct sk_buff
*tmp
= skb
;
348 skb
= skb_realloc_headroom(skb
, BTM_HEADER_LEN
);
350 BT_ERR("Tx Error: realloc_headroom failed %d",
359 skb_push(skb
, BTM_HEADER_LEN
);
361 /* header type: byte[3]
362 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
363 * header length: byte[2][1][0]
366 skb
->data
[0] = (skb
->len
& 0x0000ff);
367 skb
->data
[1] = (skb
->len
& 0x00ff00) >> 8;
368 skb
->data
[2] = (skb
->len
& 0xff0000) >> 16;
369 skb
->data
[3] = bt_cb(skb
)->pkt_type
;
371 if (priv
->hw_host_to_card
)
372 ret
= priv
->hw_host_to_card(priv
, skb
->data
, skb
->len
);
377 static void btmrvl_init_adapter(struct btmrvl_private
*priv
)
381 skb_queue_head_init(&priv
->adapter
->tx_queue
);
383 priv
->adapter
->ps_state
= PS_AWAKE
;
385 buf_size
= ALIGN_SZ(SDIO_BLOCK_SIZE
, BTSDIO_DMA_ALIGN
);
386 priv
->adapter
->hw_regs_buf
= kzalloc(buf_size
, GFP_KERNEL
);
387 if (!priv
->adapter
->hw_regs_buf
) {
388 priv
->adapter
->hw_regs
= NULL
;
389 BT_ERR("Unable to allocate buffer for hw_regs.");
391 priv
->adapter
->hw_regs
=
392 (u8
*)ALIGN_ADDR(priv
->adapter
->hw_regs_buf
,
394 BT_DBG("hw_regs_buf=%p hw_regs=%p",
395 priv
->adapter
->hw_regs_buf
, priv
->adapter
->hw_regs
);
398 init_waitqueue_head(&priv
->adapter
->cmd_wait_q
);
399 init_waitqueue_head(&priv
->adapter
->event_hs_wait_q
);
402 static void btmrvl_free_adapter(struct btmrvl_private
*priv
)
404 skb_queue_purge(&priv
->adapter
->tx_queue
);
406 kfree(priv
->adapter
->hw_regs_buf
);
407 kfree(priv
->adapter
);
409 priv
->adapter
= NULL
;
412 static int btmrvl_send_frame(struct hci_dev
*hdev
, struct sk_buff
*skb
)
414 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
416 BT_DBG("type=%d, len=%d", skb
->pkt_type
, skb
->len
);
418 if (!test_bit(HCI_RUNNING
, &hdev
->flags
)) {
419 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev
->flags
);
420 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET
,
421 skb
->data
, skb
->len
);
425 switch (bt_cb(skb
)->pkt_type
) {
426 case HCI_COMMAND_PKT
:
430 case HCI_ACLDATA_PKT
:
434 case HCI_SCODATA_PKT
:
439 skb_queue_tail(&priv
->adapter
->tx_queue
, skb
);
441 wake_up_interruptible(&priv
->main_thread
.wait_q
);
446 static int btmrvl_flush(struct hci_dev
*hdev
)
448 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
450 skb_queue_purge(&priv
->adapter
->tx_queue
);
455 static int btmrvl_close(struct hci_dev
*hdev
)
457 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
459 if (!test_and_clear_bit(HCI_RUNNING
, &hdev
->flags
))
462 skb_queue_purge(&priv
->adapter
->tx_queue
);
467 static int btmrvl_open(struct hci_dev
*hdev
)
469 set_bit(HCI_RUNNING
, &hdev
->flags
);
474 static int btmrvl_download_cal_data(struct btmrvl_private
*priv
,
484 print_hex_dump_bytes("Calibration data: ",
485 DUMP_PREFIX_OFFSET
, data
, BT_CAL_HDR_LEN
+ len
);
487 ret
= btmrvl_send_sync_cmd(priv
, BT_CMD_LOAD_CONFIG_DATA
, data
,
488 BT_CAL_HDR_LEN
+ len
);
490 BT_ERR("Failed to download caibration data\n");
495 static int btmrvl_cal_data_dt(struct btmrvl_private
*priv
)
497 struct device_node
*dt_node
;
498 u8 cal_data
[BT_CAL_HDR_LEN
+ BT_CAL_DATA_SIZE
];
499 const char name
[] = "btmrvl_caldata";
500 const char property
[] = "btmrvl,caldata";
503 dt_node
= of_find_node_by_name(NULL
, name
);
507 ret
= of_property_read_u8_array(dt_node
, property
,
508 cal_data
+ BT_CAL_HDR_LEN
,
513 BT_DBG("Use cal data from device tree");
514 ret
= btmrvl_download_cal_data(priv
, cal_data
, BT_CAL_DATA_SIZE
);
516 BT_ERR("Fail to download calibrate data");
523 static int btmrvl_setup(struct hci_dev
*hdev
)
525 struct btmrvl_private
*priv
= hci_get_drvdata(hdev
);
527 btmrvl_send_module_cfg_cmd(priv
, MODULE_BRINGUP_REQ
);
529 btmrvl_cal_data_dt(priv
);
531 btmrvl_pscan_window_reporting(priv
, 0x01);
533 priv
->btmrvl_dev
.psmode
= 1;
534 btmrvl_enable_ps(priv
);
536 priv
->btmrvl_dev
.gpio_gap
= 0xffff;
537 btmrvl_send_hscfg_cmd(priv
);
542 static int btmrvl_set_bdaddr(struct hci_dev
*hdev
, const bdaddr_t
*bdaddr
)
548 buf
[0] = MRVL_VENDOR_PKT
;
549 buf
[1] = sizeof(bdaddr_t
);
550 memcpy(buf
+ 2, bdaddr
, sizeof(bdaddr_t
));
552 skb
= __hci_cmd_sync(hdev
, BT_CMD_SET_BDADDR
, sizeof(buf
), buf
,
556 BT_ERR("%s: changing btmrvl device address failed (%ld)",
566 * This function handles the event generated by firmware, rx data
567 * received from firmware, and tx data sent from kernel.
569 static int btmrvl_service_main_thread(void *data
)
571 struct btmrvl_thread
*thread
= data
;
572 struct btmrvl_private
*priv
= thread
->priv
;
573 struct btmrvl_adapter
*adapter
= priv
->adapter
;
578 init_waitqueue_entry(&wait
, current
);
581 add_wait_queue(&thread
->wait_q
, &wait
);
583 set_current_state(TASK_INTERRUPTIBLE
);
584 if (kthread_should_stop()) {
585 BT_DBG("main_thread: break from main thread");
589 if (adapter
->wakeup_tries
||
590 ((!adapter
->int_count
) &&
591 (!priv
->btmrvl_dev
.tx_dnld_rdy
||
592 skb_queue_empty(&adapter
->tx_queue
)))) {
593 BT_DBG("main_thread is sleeping...");
597 set_current_state(TASK_RUNNING
);
599 remove_wait_queue(&thread
->wait_q
, &wait
);
601 BT_DBG("main_thread woke up");
603 spin_lock_irqsave(&priv
->driver_lock
, flags
);
604 if (adapter
->int_count
) {
605 adapter
->int_count
= 0;
606 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
607 priv
->hw_process_int_status(priv
);
608 } else if (adapter
->ps_state
== PS_SLEEP
&&
609 !skb_queue_empty(&adapter
->tx_queue
)) {
610 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
611 adapter
->wakeup_tries
++;
612 priv
->hw_wakeup_firmware(priv
);
615 spin_unlock_irqrestore(&priv
->driver_lock
, flags
);
618 if (adapter
->ps_state
== PS_SLEEP
)
621 if (!priv
->btmrvl_dev
.tx_dnld_rdy
)
624 skb
= skb_dequeue(&adapter
->tx_queue
);
626 if (btmrvl_tx_pkt(priv
, skb
))
627 priv
->btmrvl_dev
.hcidev
->stat
.err_tx
++;
629 priv
->btmrvl_dev
.hcidev
->stat
.byte_tx
+= skb
->len
;
638 int btmrvl_register_hdev(struct btmrvl_private
*priv
)
640 struct hci_dev
*hdev
= NULL
;
643 hdev
= hci_alloc_dev();
645 BT_ERR("Can not allocate HCI device");
649 priv
->btmrvl_dev
.hcidev
= hdev
;
650 hci_set_drvdata(hdev
, priv
);
652 hdev
->bus
= HCI_SDIO
;
653 hdev
->open
= btmrvl_open
;
654 hdev
->close
= btmrvl_close
;
655 hdev
->flush
= btmrvl_flush
;
656 hdev
->send
= btmrvl_send_frame
;
657 hdev
->setup
= btmrvl_setup
;
658 hdev
->set_bdaddr
= btmrvl_set_bdaddr
;
660 hdev
->dev_type
= priv
->btmrvl_dev
.dev_type
;
662 ret
= hci_register_dev(hdev
);
664 BT_ERR("Can not register HCI device");
665 goto err_hci_register_dev
;
668 #ifdef CONFIG_DEBUG_FS
669 btmrvl_debugfs_init(hdev
);
674 err_hci_register_dev
:
678 /* Stop the thread servicing the interrupts */
679 kthread_stop(priv
->main_thread
.task
);
681 btmrvl_free_adapter(priv
);
686 EXPORT_SYMBOL_GPL(btmrvl_register_hdev
);
688 struct btmrvl_private
*btmrvl_add_card(void *card
)
690 struct btmrvl_private
*priv
;
692 priv
= kzalloc(sizeof(*priv
), GFP_KERNEL
);
694 BT_ERR("Can not allocate priv");
698 priv
->adapter
= kzalloc(sizeof(*priv
->adapter
), GFP_KERNEL
);
699 if (!priv
->adapter
) {
700 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
704 btmrvl_init_adapter(priv
);
706 BT_DBG("Starting kthread...");
707 priv
->main_thread
.priv
= priv
;
708 spin_lock_init(&priv
->driver_lock
);
710 init_waitqueue_head(&priv
->main_thread
.wait_q
);
711 priv
->main_thread
.task
= kthread_run(btmrvl_service_main_thread
,
712 &priv
->main_thread
, "btmrvl_main_service");
713 if (IS_ERR(priv
->main_thread
.task
))
716 priv
->btmrvl_dev
.card
= card
;
717 priv
->btmrvl_dev
.tx_dnld_rdy
= true;
722 btmrvl_free_adapter(priv
);
730 EXPORT_SYMBOL_GPL(btmrvl_add_card
);
732 int btmrvl_remove_card(struct btmrvl_private
*priv
)
734 struct hci_dev
*hdev
;
736 hdev
= priv
->btmrvl_dev
.hcidev
;
738 wake_up_interruptible(&priv
->adapter
->cmd_wait_q
);
739 wake_up_interruptible(&priv
->adapter
->event_hs_wait_q
);
741 kthread_stop(priv
->main_thread
.task
);
743 #ifdef CONFIG_DEBUG_FS
744 btmrvl_debugfs_remove(hdev
);
747 hci_unregister_dev(hdev
);
751 priv
->btmrvl_dev
.hcidev
= NULL
;
753 btmrvl_free_adapter(priv
);
759 EXPORT_SYMBOL_GPL(btmrvl_remove_card
);
761 MODULE_AUTHOR("Marvell International Ltd.");
762 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION
);
763 MODULE_VERSION(VERSION
);
764 MODULE_LICENSE("GPL v2");