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");