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 <net/bluetooth/bluetooth.h>
22 #include <net/bluetooth/hci_core.h>
24 #include "btmrvl_drv.h"
29 * This function is called by interface specific interrupt handler.
30 * It updates Power Save & Host Sleep states, and wakes up the main
33 void btmrvl_interrupt(struct btmrvl_private *priv)
35 priv->adapter->ps_state = PS_AWAKE;
37 priv->adapter->wakeup_tries = 0;
39 priv->adapter->int_count++;
41 wake_up_interruptible(&priv->main_thread.wait_q);
43 EXPORT_SYMBOL_GPL(btmrvl_interrupt);
45 void btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
47 struct hci_event_hdr *hdr = (void *) skb->data;
48 struct hci_ev_cmd_complete *ec;
51 if (hdr->evt == HCI_EV_CMD_COMPLETE) {
52 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
53 opcode = __le16_to_cpu(ec->opcode);
54 ocf = hci_opcode_ocf(opcode);
55 if (ocf == BT_CMD_MODULE_CFG_REQ &&
56 priv->btmrvl_dev.sendcmdflag) {
57 priv->btmrvl_dev.sendcmdflag = false;
58 priv->adapter->cmd_complete = true;
59 wake_up_interruptible(&priv->adapter->cmd_wait_q);
63 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
65 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
67 struct btmrvl_adapter *adapter = priv->adapter;
68 struct btmrvl_event *event;
71 event = (struct btmrvl_event *) skb->data;
72 if (event->ec != 0xff) {
73 BT_DBG("Not Marvell Event=%x", event->ec);
78 switch (event->data[0]) {
79 case BT_CMD_AUTO_SLEEP_MODE:
80 if (!event->data[2]) {
81 if (event->data[1] == BT_PS_ENABLE)
86 (adapter->psmode) ? "Enable" : "Disable");
88 BT_DBG("PS Mode command failed");
92 case BT_CMD_HOST_SLEEP_CONFIG:
94 BT_DBG("gpio=%x, gap=%x", event->data[1],
97 BT_DBG("HSCFG command failed");
100 case BT_CMD_HOST_SLEEP_ENABLE:
101 if (!event->data[1]) {
102 adapter->hs_state = HS_ACTIVATED;
104 adapter->ps_state = PS_SLEEP;
105 wake_up_interruptible(&adapter->cmd_wait_q);
106 BT_DBG("HS ACTIVATED!");
108 BT_DBG("HS Enable failed");
112 case BT_CMD_MODULE_CFG_REQ:
113 if (priv->btmrvl_dev.sendcmdflag &&
114 event->data[1] == MODULE_BRINGUP_REQ) {
115 BT_DBG("EVENT:%s", (event->data[2]) ?
116 "Bring-up failed" : "Bring-up succeed");
117 } else if (priv->btmrvl_dev.sendcmdflag &&
118 event->data[1] == MODULE_SHUTDOWN_REQ) {
119 BT_DBG("EVENT:%s", (event->data[2]) ?
120 "Shutdown failed" : "Shutdown succeed");
122 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
127 case BT_EVENT_POWER_STATE:
128 if (event->data[1] == BT_PS_SLEEP)
129 adapter->ps_state = PS_SLEEP;
131 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
135 BT_DBG("Unknown Event=%d", event->data[0]);
146 EXPORT_SYMBOL_GPL(btmrvl_process_event);
148 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
151 struct btmrvl_cmd *cmd;
154 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
156 BT_ERR("No free skb");
160 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
161 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_MODULE_CFG_REQ));
163 cmd->data[0] = subcmd;
165 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
167 skb->dev = (void *) priv->btmrvl_dev.hcidev;
168 skb_queue_head(&priv->adapter->tx_queue, skb);
170 priv->btmrvl_dev.sendcmdflag = true;
172 priv->adapter->cmd_complete = false;
174 BT_DBG("Queue module cfg Command");
176 wake_up_interruptible(&priv->main_thread.wait_q);
178 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
179 priv->adapter->cmd_complete,
180 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) {
182 BT_ERR("module_cfg_cmd(%x): timeout: %d",
183 subcmd, priv->btmrvl_dev.sendcmdflag);
186 BT_DBG("module cfg Command done");
190 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
192 static int btmrvl_enable_hs(struct btmrvl_private *priv)
195 struct btmrvl_cmd *cmd;
198 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
200 BT_ERR("No free skb");
204 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
205 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_ENABLE));
208 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
210 skb->dev = (void *) priv->btmrvl_dev.hcidev;
211 skb_queue_head(&priv->adapter->tx_queue, skb);
213 BT_DBG("Queue hs enable Command");
215 wake_up_interruptible(&priv->main_thread.wait_q);
217 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
218 priv->adapter->hs_state,
219 msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
221 BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
222 priv->adapter->ps_state,
223 priv->adapter->wakeup_tries);
229 int btmrvl_prepare_command(struct btmrvl_private *priv)
231 struct sk_buff *skb = NULL;
232 struct btmrvl_cmd *cmd;
235 if (priv->btmrvl_dev.hscfgcmd) {
236 priv->btmrvl_dev.hscfgcmd = 0;
238 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
240 BT_ERR("No free skb");
244 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
245 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_CONFIG));
247 cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
248 cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
250 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
252 skb->dev = (void *) priv->btmrvl_dev.hcidev;
253 skb_queue_head(&priv->adapter->tx_queue, skb);
255 BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x",
256 cmd->data[0], cmd->data[1]);
259 if (priv->btmrvl_dev.pscmd) {
260 priv->btmrvl_dev.pscmd = 0;
262 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
264 BT_ERR("No free skb");
268 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
269 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_AUTO_SLEEP_MODE));
272 if (priv->btmrvl_dev.psmode)
273 cmd->data[0] = BT_PS_ENABLE;
275 cmd->data[0] = BT_PS_DISABLE;
277 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
279 skb->dev = (void *) priv->btmrvl_dev.hcidev;
280 skb_queue_head(&priv->adapter->tx_queue, skb);
282 BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
285 if (priv->btmrvl_dev.hscmd) {
286 priv->btmrvl_dev.hscmd = 0;
288 if (priv->btmrvl_dev.hsmode) {
289 ret = btmrvl_enable_hs(priv);
291 ret = priv->hw_wakeup_firmware(priv);
292 priv->adapter->hs_state = HS_DEACTIVATED;
299 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
303 if (!skb || !skb->data)
306 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
307 BT_ERR("Tx Error: Bad skb length %d : %d",
308 skb->len, BTM_UPLD_SIZE);
312 if (skb_headroom(skb) < BTM_HEADER_LEN) {
313 struct sk_buff *tmp = skb;
315 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
317 BT_ERR("Tx Error: realloc_headroom failed %d",
326 skb_push(skb, BTM_HEADER_LEN);
328 /* header type: byte[3]
329 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
330 * header length: byte[2][1][0]
333 skb->data[0] = (skb->len & 0x0000ff);
334 skb->data[1] = (skb->len & 0x00ff00) >> 8;
335 skb->data[2] = (skb->len & 0xff0000) >> 16;
336 skb->data[3] = bt_cb(skb)->pkt_type;
338 if (priv->hw_host_to_card)
339 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
344 static void btmrvl_init_adapter(struct btmrvl_private *priv)
346 skb_queue_head_init(&priv->adapter->tx_queue);
348 priv->adapter->ps_state = PS_AWAKE;
350 init_waitqueue_head(&priv->adapter->cmd_wait_q);
353 static void btmrvl_free_adapter(struct btmrvl_private *priv)
355 skb_queue_purge(&priv->adapter->tx_queue);
357 kfree(priv->adapter);
359 priv->adapter = NULL;
362 static int btmrvl_ioctl(struct hci_dev *hdev,
363 unsigned int cmd, unsigned long arg)
368 static void btmrvl_destruct(struct hci_dev *hdev)
372 static int btmrvl_send_frame(struct sk_buff *skb)
374 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
375 struct btmrvl_private *priv = NULL;
377 BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
379 if (!hdev || !hdev->driver_data) {
380 BT_ERR("Frame for unknown HCI device");
384 priv = (struct btmrvl_private *) hdev->driver_data;
385 if (!test_bit(HCI_RUNNING, &hdev->flags)) {
386 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
387 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
388 skb->data, skb->len);
392 switch (bt_cb(skb)->pkt_type) {
393 case HCI_COMMAND_PKT:
397 case HCI_ACLDATA_PKT:
401 case HCI_SCODATA_PKT:
406 skb_queue_tail(&priv->adapter->tx_queue, skb);
408 wake_up_interruptible(&priv->main_thread.wait_q);
413 static int btmrvl_flush(struct hci_dev *hdev)
415 struct btmrvl_private *priv = hdev->driver_data;
417 skb_queue_purge(&priv->adapter->tx_queue);
422 static int btmrvl_close(struct hci_dev *hdev)
424 struct btmrvl_private *priv = hdev->driver_data;
426 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
429 skb_queue_purge(&priv->adapter->tx_queue);
434 static int btmrvl_open(struct hci_dev *hdev)
436 set_bit(HCI_RUNNING, &hdev->flags);
442 * This function handles the event generated by firmware, rx data
443 * received from firmware, and tx data sent from kernel.
445 static int btmrvl_service_main_thread(void *data)
447 struct btmrvl_thread *thread = data;
448 struct btmrvl_private *priv = thread->priv;
449 struct btmrvl_adapter *adapter = priv->adapter;
454 init_waitqueue_entry(&wait, current);
456 current->flags |= PF_NOFREEZE;
459 add_wait_queue(&thread->wait_q, &wait);
461 set_current_state(TASK_INTERRUPTIBLE);
463 if (adapter->wakeup_tries ||
464 ((!adapter->int_count) &&
465 (!priv->btmrvl_dev.tx_dnld_rdy ||
466 skb_queue_empty(&adapter->tx_queue)))) {
467 BT_DBG("main_thread is sleeping...");
471 set_current_state(TASK_RUNNING);
473 remove_wait_queue(&thread->wait_q, &wait);
475 BT_DBG("main_thread woke up");
477 if (kthread_should_stop()) {
478 BT_DBG("main_thread: break from main thread");
482 spin_lock_irqsave(&priv->driver_lock, flags);
483 if (adapter->int_count) {
484 adapter->int_count = 0;
485 } else if (adapter->ps_state == PS_SLEEP &&
486 !skb_queue_empty(&adapter->tx_queue)) {
487 spin_unlock_irqrestore(&priv->driver_lock, flags);
488 adapter->wakeup_tries++;
489 priv->hw_wakeup_firmware(priv);
492 spin_unlock_irqrestore(&priv->driver_lock, flags);
494 if (adapter->ps_state == PS_SLEEP)
497 if (!priv->btmrvl_dev.tx_dnld_rdy)
500 skb = skb_dequeue(&adapter->tx_queue);
502 if (btmrvl_tx_pkt(priv, skb))
503 priv->btmrvl_dev.hcidev->stat.err_tx++;
505 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
514 struct btmrvl_private *btmrvl_add_card(void *card)
516 struct hci_dev *hdev = NULL;
517 struct btmrvl_private *priv;
520 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
522 BT_ERR("Can not allocate priv");
526 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
527 if (!priv->adapter) {
528 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
532 btmrvl_init_adapter(priv);
534 hdev = hci_alloc_dev();
536 BT_ERR("Can not allocate HCI device");
540 BT_DBG("Starting kthread...");
541 priv->main_thread.priv = priv;
542 spin_lock_init(&priv->driver_lock);
544 init_waitqueue_head(&priv->main_thread.wait_q);
545 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
546 &priv->main_thread, "btmrvl_main_service");
548 priv->btmrvl_dev.hcidev = hdev;
549 priv->btmrvl_dev.card = card;
551 hdev->driver_data = priv;
553 priv->btmrvl_dev.tx_dnld_rdy = true;
555 hdev->type = HCI_SDIO;
556 hdev->open = btmrvl_open;
557 hdev->close = btmrvl_close;
558 hdev->flush = btmrvl_flush;
559 hdev->send = btmrvl_send_frame;
560 hdev->destruct = btmrvl_destruct;
561 hdev->ioctl = btmrvl_ioctl;
562 hdev->owner = THIS_MODULE;
564 ret = hci_register_dev(hdev);
566 BT_ERR("Can not register HCI device");
567 goto err_hci_register_dev;
570 #ifdef CONFIG_DEBUG_FS
571 btmrvl_debugfs_init(hdev);
576 err_hci_register_dev:
577 /* Stop the thread servicing the interrupts */
578 kthread_stop(priv->main_thread.task);
583 btmrvl_free_adapter(priv);
591 EXPORT_SYMBOL_GPL(btmrvl_add_card);
593 int btmrvl_remove_card(struct btmrvl_private *priv)
595 struct hci_dev *hdev;
597 hdev = priv->btmrvl_dev.hcidev;
599 wake_up_interruptible(&priv->adapter->cmd_wait_q);
601 kthread_stop(priv->main_thread.task);
603 #ifdef CONFIG_DEBUG_FS
604 btmrvl_debugfs_remove(hdev);
607 hci_unregister_dev(hdev);
611 priv->btmrvl_dev.hcidev = NULL;
613 btmrvl_free_adapter(priv);
619 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
621 MODULE_AUTHOR("Marvell International Ltd.");
622 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
623 MODULE_VERSION(VERSION);
624 MODULE_LICENSE("GPL v2");