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) {
116 ((event->data[2] == MODULE_BROUGHT_UP) ||
117 (event->data[2] == MODULE_ALREADY_UP)) ?
118 "Bring-up succeed" : "Bring-up failed");
119 } else if (priv->btmrvl_dev.sendcmdflag &&
120 event->data[1] == MODULE_SHUTDOWN_REQ) {
121 BT_DBG("EVENT:%s", (event->data[2]) ?
122 "Shutdown failed" : "Shutdown succeed");
124 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
129 case BT_EVENT_POWER_STATE:
130 if (event->data[1] == BT_PS_SLEEP)
131 adapter->ps_state = PS_SLEEP;
133 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
137 BT_DBG("Unknown Event=%d", event->data[0]);
148 EXPORT_SYMBOL_GPL(btmrvl_process_event);
150 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
153 struct btmrvl_cmd *cmd;
156 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
158 BT_ERR("No free skb");
162 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
163 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_MODULE_CFG_REQ));
165 cmd->data[0] = subcmd;
167 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
169 skb->dev = (void *) priv->btmrvl_dev.hcidev;
170 skb_queue_head(&priv->adapter->tx_queue, skb);
172 priv->btmrvl_dev.sendcmdflag = true;
174 priv->adapter->cmd_complete = false;
176 BT_DBG("Queue module cfg Command");
178 wake_up_interruptible(&priv->main_thread.wait_q);
180 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
181 priv->adapter->cmd_complete,
182 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) {
184 BT_ERR("module_cfg_cmd(%x): timeout: %d",
185 subcmd, priv->btmrvl_dev.sendcmdflag);
188 BT_DBG("module cfg Command done");
192 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
194 int btmrvl_enable_ps(struct btmrvl_private *priv)
197 struct btmrvl_cmd *cmd;
199 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
201 BT_ERR("No free skb");
205 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
206 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF,
207 BT_CMD_AUTO_SLEEP_MODE));
210 if (priv->btmrvl_dev.psmode)
211 cmd->data[0] = BT_PS_ENABLE;
213 cmd->data[0] = BT_PS_DISABLE;
215 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
217 skb->dev = (void *) priv->btmrvl_dev.hcidev;
218 skb_queue_head(&priv->adapter->tx_queue, skb);
220 BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
224 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
226 static int btmrvl_enable_hs(struct btmrvl_private *priv)
229 struct btmrvl_cmd *cmd;
232 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
234 BT_ERR("No free skb");
238 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
239 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_ENABLE));
242 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
244 skb->dev = (void *) priv->btmrvl_dev.hcidev;
245 skb_queue_head(&priv->adapter->tx_queue, skb);
247 BT_DBG("Queue hs enable Command");
249 wake_up_interruptible(&priv->main_thread.wait_q);
251 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
252 priv->adapter->hs_state,
253 msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
255 BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
256 priv->adapter->ps_state,
257 priv->adapter->wakeup_tries);
263 int btmrvl_prepare_command(struct btmrvl_private *priv)
265 struct sk_buff *skb = NULL;
266 struct btmrvl_cmd *cmd;
269 if (priv->btmrvl_dev.hscfgcmd) {
270 priv->btmrvl_dev.hscfgcmd = 0;
272 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
274 BT_ERR("No free skb");
278 cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
279 cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_CONFIG));
281 cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
282 cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
284 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
286 skb->dev = (void *) priv->btmrvl_dev.hcidev;
287 skb_queue_head(&priv->adapter->tx_queue, skb);
289 BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x",
290 cmd->data[0], cmd->data[1]);
293 if (priv->btmrvl_dev.pscmd) {
294 priv->btmrvl_dev.pscmd = 0;
295 btmrvl_enable_ps(priv);
298 if (priv->btmrvl_dev.hscmd) {
299 priv->btmrvl_dev.hscmd = 0;
301 if (priv->btmrvl_dev.hsmode) {
302 ret = btmrvl_enable_hs(priv);
304 ret = priv->hw_wakeup_firmware(priv);
305 priv->adapter->hs_state = HS_DEACTIVATED;
312 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
316 if (!skb || !skb->data)
319 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
320 BT_ERR("Tx Error: Bad skb length %d : %d",
321 skb->len, BTM_UPLD_SIZE);
325 if (skb_headroom(skb) < BTM_HEADER_LEN) {
326 struct sk_buff *tmp = skb;
328 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
330 BT_ERR("Tx Error: realloc_headroom failed %d",
339 skb_push(skb, BTM_HEADER_LEN);
341 /* header type: byte[3]
342 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
343 * header length: byte[2][1][0]
346 skb->data[0] = (skb->len & 0x0000ff);
347 skb->data[1] = (skb->len & 0x00ff00) >> 8;
348 skb->data[2] = (skb->len & 0xff0000) >> 16;
349 skb->data[3] = bt_cb(skb)->pkt_type;
351 if (priv->hw_host_to_card)
352 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
357 static void btmrvl_init_adapter(struct btmrvl_private *priv)
359 skb_queue_head_init(&priv->adapter->tx_queue);
361 priv->adapter->ps_state = PS_AWAKE;
363 init_waitqueue_head(&priv->adapter->cmd_wait_q);
366 static void btmrvl_free_adapter(struct btmrvl_private *priv)
368 skb_queue_purge(&priv->adapter->tx_queue);
370 kfree(priv->adapter);
372 priv->adapter = NULL;
375 static int btmrvl_ioctl(struct hci_dev *hdev,
376 unsigned int cmd, unsigned long arg)
381 static void btmrvl_destruct(struct hci_dev *hdev)
385 static int btmrvl_send_frame(struct sk_buff *skb)
387 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
388 struct btmrvl_private *priv = NULL;
390 BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
392 if (!hdev || !hdev->driver_data) {
393 BT_ERR("Frame for unknown HCI device");
397 priv = (struct btmrvl_private *) hdev->driver_data;
398 if (!test_bit(HCI_RUNNING, &hdev->flags)) {
399 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
400 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
401 skb->data, skb->len);
405 switch (bt_cb(skb)->pkt_type) {
406 case HCI_COMMAND_PKT:
410 case HCI_ACLDATA_PKT:
414 case HCI_SCODATA_PKT:
419 skb_queue_tail(&priv->adapter->tx_queue, skb);
421 wake_up_interruptible(&priv->main_thread.wait_q);
426 static int btmrvl_flush(struct hci_dev *hdev)
428 struct btmrvl_private *priv = hdev->driver_data;
430 skb_queue_purge(&priv->adapter->tx_queue);
435 static int btmrvl_close(struct hci_dev *hdev)
437 struct btmrvl_private *priv = hdev->driver_data;
439 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
442 skb_queue_purge(&priv->adapter->tx_queue);
447 static int btmrvl_open(struct hci_dev *hdev)
449 set_bit(HCI_RUNNING, &hdev->flags);
455 * This function handles the event generated by firmware, rx data
456 * received from firmware, and tx data sent from kernel.
458 static int btmrvl_service_main_thread(void *data)
460 struct btmrvl_thread *thread = data;
461 struct btmrvl_private *priv = thread->priv;
462 struct btmrvl_adapter *adapter = priv->adapter;
467 init_waitqueue_entry(&wait, current);
469 current->flags |= PF_NOFREEZE;
472 add_wait_queue(&thread->wait_q, &wait);
474 set_current_state(TASK_INTERRUPTIBLE);
476 if (adapter->wakeup_tries ||
477 ((!adapter->int_count) &&
478 (!priv->btmrvl_dev.tx_dnld_rdy ||
479 skb_queue_empty(&adapter->tx_queue)))) {
480 BT_DBG("main_thread is sleeping...");
484 set_current_state(TASK_RUNNING);
486 remove_wait_queue(&thread->wait_q, &wait);
488 BT_DBG("main_thread woke up");
490 if (kthread_should_stop()) {
491 BT_DBG("main_thread: break from main thread");
495 spin_lock_irqsave(&priv->driver_lock, flags);
496 if (adapter->int_count) {
497 adapter->int_count = 0;
498 } else if (adapter->ps_state == PS_SLEEP &&
499 !skb_queue_empty(&adapter->tx_queue)) {
500 spin_unlock_irqrestore(&priv->driver_lock, flags);
501 adapter->wakeup_tries++;
502 priv->hw_wakeup_firmware(priv);
505 spin_unlock_irqrestore(&priv->driver_lock, flags);
507 if (adapter->ps_state == PS_SLEEP)
510 if (!priv->btmrvl_dev.tx_dnld_rdy)
513 skb = skb_dequeue(&adapter->tx_queue);
515 if (btmrvl_tx_pkt(priv, skb))
516 priv->btmrvl_dev.hcidev->stat.err_tx++;
518 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
527 int btmrvl_register_hdev(struct btmrvl_private *priv)
529 struct hci_dev *hdev = NULL;
532 hdev = hci_alloc_dev();
534 BT_ERR("Can not allocate HCI device");
538 priv->btmrvl_dev.hcidev = hdev;
539 hdev->driver_data = priv;
541 hdev->bus = HCI_SDIO;
542 hdev->open = btmrvl_open;
543 hdev->close = btmrvl_close;
544 hdev->flush = btmrvl_flush;
545 hdev->send = btmrvl_send_frame;
546 hdev->destruct = btmrvl_destruct;
547 hdev->ioctl = btmrvl_ioctl;
548 hdev->owner = THIS_MODULE;
550 btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
552 ret = hci_register_dev(hdev);
554 BT_ERR("Can not register HCI device");
555 goto err_hci_register_dev;
558 #ifdef CONFIG_DEBUG_FS
559 btmrvl_debugfs_init(hdev);
564 err_hci_register_dev:
568 /* Stop the thread servicing the interrupts */
569 kthread_stop(priv->main_thread.task);
571 btmrvl_free_adapter(priv);
576 EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
578 struct btmrvl_private *btmrvl_add_card(void *card)
580 struct btmrvl_private *priv;
582 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
584 BT_ERR("Can not allocate priv");
588 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
589 if (!priv->adapter) {
590 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
594 btmrvl_init_adapter(priv);
596 BT_DBG("Starting kthread...");
597 priv->main_thread.priv = priv;
598 spin_lock_init(&priv->driver_lock);
600 init_waitqueue_head(&priv->main_thread.wait_q);
601 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
602 &priv->main_thread, "btmrvl_main_service");
604 priv->btmrvl_dev.card = card;
605 priv->btmrvl_dev.tx_dnld_rdy = true;
615 EXPORT_SYMBOL_GPL(btmrvl_add_card);
617 int btmrvl_remove_card(struct btmrvl_private *priv)
619 struct hci_dev *hdev;
621 hdev = priv->btmrvl_dev.hcidev;
623 wake_up_interruptible(&priv->adapter->cmd_wait_q);
625 kthread_stop(priv->main_thread.task);
627 #ifdef CONFIG_DEBUG_FS
628 btmrvl_debugfs_remove(hdev);
631 hci_unregister_dev(hdev);
635 priv->btmrvl_dev.hcidev = NULL;
637 btmrvl_free_adapter(priv);
643 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
645 MODULE_AUTHOR("Marvell International Ltd.");
646 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
647 MODULE_VERSION(VERSION);
648 MODULE_LICENSE("GPL v2");