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"
31 * This function is called by interface specific interrupt handler.
32 * It updates Power Save & Host Sleep states, and wakes up the main
35 void btmrvl_interrupt(struct btmrvl_private *priv)
37 priv->adapter->ps_state = PS_AWAKE;
39 priv->adapter->wakeup_tries = 0;
41 priv->adapter->int_count++;
43 wake_up_interruptible(&priv->main_thread.wait_q);
45 EXPORT_SYMBOL_GPL(btmrvl_interrupt);
47 bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
49 struct hci_event_hdr *hdr = (void *) skb->data;
51 if (hdr->evt == HCI_EV_CMD_COMPLETE) {
52 struct hci_ev_cmd_complete *ec;
55 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
56 opcode = __le16_to_cpu(ec->opcode);
58 if (priv->btmrvl_dev.sendcmdflag) {
59 priv->btmrvl_dev.sendcmdflag = false;
60 priv->adapter->cmd_complete = true;
61 wake_up_interruptible(&priv->adapter->cmd_wait_q);
64 if (hci_opcode_ogf(opcode) == 0x3F) {
65 BT_DBG("vendor event skipped: opcode=%#4.4x", opcode);
73 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
75 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
77 struct btmrvl_adapter *adapter = priv->adapter;
78 struct btmrvl_event *event;
81 event = (struct btmrvl_event *) skb->data;
82 if (event->ec != 0xff) {
83 BT_DBG("Not Marvell Event=%x", event->ec);
88 switch (event->data[0]) {
89 case BT_EVENT_AUTO_SLEEP_MODE:
90 if (!event->data[2]) {
91 if (event->data[1] == BT_PS_ENABLE)
96 (adapter->psmode) ? "Enable" : "Disable");
98 BT_DBG("PS Mode command failed");
102 case BT_EVENT_HOST_SLEEP_CONFIG:
104 BT_DBG("gpio=%x, gap=%x", event->data[1],
107 BT_DBG("HSCFG command failed");
110 case BT_EVENT_HOST_SLEEP_ENABLE:
111 if (!event->data[1]) {
112 adapter->hs_state = HS_ACTIVATED;
114 adapter->ps_state = PS_SLEEP;
115 BT_DBG("HS ACTIVATED!");
117 BT_DBG("HS Enable failed");
121 case BT_EVENT_MODULE_CFG_REQ:
122 if (priv->btmrvl_dev.sendcmdflag &&
123 event->data[1] == MODULE_BRINGUP_REQ) {
125 ((event->data[2] == MODULE_BROUGHT_UP) ||
126 (event->data[2] == MODULE_ALREADY_UP)) ?
127 "Bring-up succeed" : "Bring-up failed");
129 if (event->length > 3 && event->data[3])
130 priv->btmrvl_dev.dev_type = HCI_AMP;
132 priv->btmrvl_dev.dev_type = HCI_BREDR;
134 BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
135 } else if (priv->btmrvl_dev.sendcmdflag &&
136 event->data[1] == MODULE_SHUTDOWN_REQ) {
137 BT_DBG("EVENT:%s", (event->data[2]) ?
138 "Shutdown failed" : "Shutdown succeed");
140 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
145 case BT_EVENT_POWER_STATE:
146 if (event->data[1] == BT_PS_SLEEP)
147 adapter->ps_state = PS_SLEEP;
149 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
153 BT_DBG("Unknown Event=%d", event->data[0]);
164 EXPORT_SYMBOL_GPL(btmrvl_process_event);
166 static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
167 const void *param, u8 len)
170 struct hci_command_hdr *hdr;
172 skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
174 BT_ERR("No free skb");
178 hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
179 hdr->opcode = cpu_to_le16(opcode);
183 memcpy(skb_put(skb, len), param, len);
185 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
187 skb_queue_head(&priv->adapter->tx_queue, skb);
189 priv->btmrvl_dev.sendcmdflag = true;
191 priv->adapter->cmd_complete = false;
193 wake_up_interruptible(&priv->main_thread.wait_q);
195 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
196 priv->adapter->cmd_complete,
197 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP)))
203 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
207 ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
209 BT_ERR("module_cfg_cmd(%x) failed\n", subcmd);
213 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
215 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
220 param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
221 param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
223 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
226 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
228 BT_ERR("HSCFG command failed\n");
232 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
234 int btmrvl_enable_ps(struct btmrvl_private *priv)
239 if (priv->btmrvl_dev.psmode)
240 param = BT_PS_ENABLE;
242 param = BT_PS_DISABLE;
244 ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, ¶m, 1);
246 BT_ERR("PSMODE command failed\n");
250 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
252 int btmrvl_enable_hs(struct btmrvl_private *priv)
256 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
258 BT_ERR("Host sleep enable command failed\n");
262 EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
264 int btmrvl_prepare_command(struct btmrvl_private *priv)
268 if (priv->btmrvl_dev.hscfgcmd) {
269 priv->btmrvl_dev.hscfgcmd = 0;
270 btmrvl_send_hscfg_cmd(priv);
273 if (priv->btmrvl_dev.pscmd) {
274 priv->btmrvl_dev.pscmd = 0;
275 btmrvl_enable_ps(priv);
278 if (priv->btmrvl_dev.hscmd) {
279 priv->btmrvl_dev.hscmd = 0;
281 if (priv->btmrvl_dev.hsmode) {
282 ret = btmrvl_enable_hs(priv);
284 ret = priv->hw_wakeup_firmware(priv);
285 priv->adapter->hs_state = HS_DEACTIVATED;
292 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
296 if (!skb || !skb->data)
299 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
300 BT_ERR("Tx Error: Bad skb length %d : %d",
301 skb->len, BTM_UPLD_SIZE);
305 if (skb_headroom(skb) < BTM_HEADER_LEN) {
306 struct sk_buff *tmp = skb;
308 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
310 BT_ERR("Tx Error: realloc_headroom failed %d",
319 skb_push(skb, BTM_HEADER_LEN);
321 /* header type: byte[3]
322 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
323 * header length: byte[2][1][0]
326 skb->data[0] = (skb->len & 0x0000ff);
327 skb->data[1] = (skb->len & 0x00ff00) >> 8;
328 skb->data[2] = (skb->len & 0xff0000) >> 16;
329 skb->data[3] = bt_cb(skb)->pkt_type;
331 if (priv->hw_host_to_card)
332 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
337 static void btmrvl_init_adapter(struct btmrvl_private *priv)
339 skb_queue_head_init(&priv->adapter->tx_queue);
341 priv->adapter->ps_state = PS_AWAKE;
343 init_waitqueue_head(&priv->adapter->cmd_wait_q);
346 static void btmrvl_free_adapter(struct btmrvl_private *priv)
348 skb_queue_purge(&priv->adapter->tx_queue);
350 kfree(priv->adapter);
352 priv->adapter = NULL;
355 static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
357 struct btmrvl_private *priv = hci_get_drvdata(hdev);
359 BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
361 if (!test_bit(HCI_RUNNING, &hdev->flags)) {
362 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
363 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
364 skb->data, skb->len);
368 switch (bt_cb(skb)->pkt_type) {
369 case HCI_COMMAND_PKT:
373 case HCI_ACLDATA_PKT:
377 case HCI_SCODATA_PKT:
382 skb_queue_tail(&priv->adapter->tx_queue, skb);
384 wake_up_interruptible(&priv->main_thread.wait_q);
389 static int btmrvl_flush(struct hci_dev *hdev)
391 struct btmrvl_private *priv = hci_get_drvdata(hdev);
393 skb_queue_purge(&priv->adapter->tx_queue);
398 static int btmrvl_close(struct hci_dev *hdev)
400 struct btmrvl_private *priv = hci_get_drvdata(hdev);
402 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
405 skb_queue_purge(&priv->adapter->tx_queue);
410 static int btmrvl_open(struct hci_dev *hdev)
412 set_bit(HCI_RUNNING, &hdev->flags);
417 static int btmrvl_download_cal_data(struct btmrvl_private *priv,
427 print_hex_dump_bytes("Calibration data: ",
428 DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
430 ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
431 BT_CAL_HDR_LEN + len);
433 BT_ERR("Failed to download caibration data\n");
438 static int btmrvl_cal_data_dt(struct btmrvl_private *priv)
440 struct device_node *dt_node;
441 u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
442 const char name[] = "btmrvl_caldata";
443 const char property[] = "btmrvl,caldata";
446 dt_node = of_find_node_by_name(NULL, name);
450 ret = of_property_read_u8_array(dt_node, property,
451 cal_data + BT_CAL_HDR_LEN,
456 BT_DBG("Use cal data from device tree");
457 ret = btmrvl_download_cal_data(priv, cal_data, BT_CAL_DATA_SIZE);
459 BT_ERR("Fail to download calibrate data");
466 static int btmrvl_setup(struct hci_dev *hdev)
468 struct btmrvl_private *priv = hci_get_drvdata(hdev);
470 btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
472 btmrvl_cal_data_dt(priv);
474 priv->btmrvl_dev.psmode = 1;
475 btmrvl_enable_ps(priv);
477 priv->btmrvl_dev.gpio_gap = 0xffff;
478 btmrvl_send_hscfg_cmd(priv);
484 * This function handles the event generated by firmware, rx data
485 * received from firmware, and tx data sent from kernel.
487 static int btmrvl_service_main_thread(void *data)
489 struct btmrvl_thread *thread = data;
490 struct btmrvl_private *priv = thread->priv;
491 struct btmrvl_adapter *adapter = priv->adapter;
496 init_waitqueue_entry(&wait, current);
499 add_wait_queue(&thread->wait_q, &wait);
501 set_current_state(TASK_INTERRUPTIBLE);
502 if (kthread_should_stop()) {
503 BT_DBG("main_thread: break from main thread");
507 if (adapter->wakeup_tries ||
508 ((!adapter->int_count) &&
509 (!priv->btmrvl_dev.tx_dnld_rdy ||
510 skb_queue_empty(&adapter->tx_queue)))) {
511 BT_DBG("main_thread is sleeping...");
515 set_current_state(TASK_RUNNING);
517 remove_wait_queue(&thread->wait_q, &wait);
519 BT_DBG("main_thread woke up");
521 spin_lock_irqsave(&priv->driver_lock, flags);
522 if (adapter->int_count) {
523 adapter->int_count = 0;
524 spin_unlock_irqrestore(&priv->driver_lock, flags);
525 priv->hw_process_int_status(priv);
526 } else if (adapter->ps_state == PS_SLEEP &&
527 !skb_queue_empty(&adapter->tx_queue)) {
528 spin_unlock_irqrestore(&priv->driver_lock, flags);
529 adapter->wakeup_tries++;
530 priv->hw_wakeup_firmware(priv);
533 spin_unlock_irqrestore(&priv->driver_lock, flags);
536 if (adapter->ps_state == PS_SLEEP)
539 if (!priv->btmrvl_dev.tx_dnld_rdy)
542 skb = skb_dequeue(&adapter->tx_queue);
544 if (btmrvl_tx_pkt(priv, skb))
545 priv->btmrvl_dev.hcidev->stat.err_tx++;
547 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
556 int btmrvl_register_hdev(struct btmrvl_private *priv)
558 struct hci_dev *hdev = NULL;
561 hdev = hci_alloc_dev();
563 BT_ERR("Can not allocate HCI device");
567 priv->btmrvl_dev.hcidev = hdev;
568 hci_set_drvdata(hdev, priv);
570 hdev->bus = HCI_SDIO;
571 hdev->open = btmrvl_open;
572 hdev->close = btmrvl_close;
573 hdev->flush = btmrvl_flush;
574 hdev->send = btmrvl_send_frame;
575 hdev->setup = btmrvl_setup;
577 hdev->dev_type = priv->btmrvl_dev.dev_type;
579 ret = hci_register_dev(hdev);
581 BT_ERR("Can not register HCI device");
582 goto err_hci_register_dev;
585 #ifdef CONFIG_DEBUG_FS
586 btmrvl_debugfs_init(hdev);
591 err_hci_register_dev:
595 /* Stop the thread servicing the interrupts */
596 kthread_stop(priv->main_thread.task);
598 btmrvl_free_adapter(priv);
603 EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
605 struct btmrvl_private *btmrvl_add_card(void *card)
607 struct btmrvl_private *priv;
609 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
611 BT_ERR("Can not allocate priv");
615 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
616 if (!priv->adapter) {
617 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
621 btmrvl_init_adapter(priv);
623 BT_DBG("Starting kthread...");
624 priv->main_thread.priv = priv;
625 spin_lock_init(&priv->driver_lock);
627 init_waitqueue_head(&priv->main_thread.wait_q);
628 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
629 &priv->main_thread, "btmrvl_main_service");
631 priv->btmrvl_dev.card = card;
632 priv->btmrvl_dev.tx_dnld_rdy = true;
642 EXPORT_SYMBOL_GPL(btmrvl_add_card);
644 int btmrvl_remove_card(struct btmrvl_private *priv)
646 struct hci_dev *hdev;
648 hdev = priv->btmrvl_dev.hcidev;
650 wake_up_interruptible(&priv->adapter->cmd_wait_q);
652 kthread_stop(priv->main_thread.task);
654 #ifdef CONFIG_DEBUG_FS
655 btmrvl_debugfs_remove(hdev);
658 hci_unregister_dev(hdev);
662 priv->btmrvl_dev.hcidev = NULL;
664 btmrvl_free_adapter(priv);
670 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
672 MODULE_AUTHOR("Marvell International Ltd.");
673 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
674 MODULE_VERSION(VERSION);
675 MODULE_LICENSE("GPL v2");