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)
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);
47 EXPORT_SYMBOL_GPL(btmrvl_interrupt);
49 void btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
51 struct hci_event_hdr *hdr = (void *) skb->data;
52 struct hci_ev_cmd_complete *ec;
57 if (hdr->evt == HCI_EV_CMD_COMPLETE) {
58 ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
59 opcode = __le16_to_cpu(ec->opcode);
60 ocf = hci_opcode_ocf(opcode);
61 if (ocf == BT_CMD_MODULE_CFG_REQ &&
62 priv->btmrvl_dev.sendcmdflag) {
63 priv->btmrvl_dev.sendcmdflag = false;
64 priv->adapter->cmd_complete = true;
65 wake_up_interruptible(&priv->adapter->cmd_wait_q);
71 EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
73 int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
75 struct btmrvl_adapter *adapter = priv->adapter;
76 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_CMD_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_CMD_HOST_SLEEP_CONFIG:
104 BT_DBG("gpio=%x, gap=%x", event->data[1],
107 BT_DBG("HSCFG command failed");
110 case BT_CMD_HOST_SLEEP_ENABLE:
111 if (!event->data[1]) {
112 adapter->hs_state = HS_ACTIVATED;
114 adapter->ps_state = PS_SLEEP;
115 wake_up_interruptible(&adapter->cmd_wait_q);
116 BT_DBG("HS ACTIVATED!");
118 BT_DBG("HS Enable failed");
122 case BT_CMD_MODULE_CFG_REQ:
123 if (priv->btmrvl_dev.sendcmdflag &&
124 event->data[1] == MODULE_BRINGUP_REQ) {
125 BT_DBG("EVENT:%s", (event->data[2]) ?
126 "Bring-up failed" : "Bring-up succeed");
127 } else if (priv->btmrvl_dev.sendcmdflag &&
128 event->data[1] == MODULE_SHUTDOWN_REQ) {
129 BT_DBG("EVENT:%s", (event->data[2]) ?
130 "Shutdown failed" : "Shutdown succeed");
132 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
137 case BT_EVENT_POWER_STATE:
138 if (event->data[1] == BT_PS_SLEEP)
139 adapter->ps_state = PS_SLEEP;
141 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
145 BT_DBG("Unknown Event=%d", event->data[0]);
158 EXPORT_SYMBOL_GPL(btmrvl_process_event);
160 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
163 struct btmrvl_cmd *cmd;
168 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
170 BT_ERR("No free skb");
175 cmd = (struct btmrvl_cmd *) skb->tail;
176 cmd->ocf_ogf = cpu_to_le16((OGF << 10) | BT_CMD_MODULE_CFG_REQ);
178 cmd->data[0] = subcmd;
180 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
182 skb_put(skb, sizeof(*cmd));
183 skb->dev = (void *) priv->btmrvl_dev.hcidev;
184 skb_queue_head(&priv->adapter->tx_queue, skb);
186 priv->btmrvl_dev.sendcmdflag = true;
188 priv->adapter->cmd_complete = false;
190 BT_DBG("Queue module cfg Command");
192 wake_up_interruptible(&priv->main_thread.wait_q);
194 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
195 priv->adapter->cmd_complete,
196 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) {
198 BT_ERR("module_cfg_cmd(%x): timeout: %d",
199 subcmd, priv->btmrvl_dev.sendcmdflag);
202 BT_DBG("module cfg Command done");
209 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
211 static int btmrvl_enable_hs(struct btmrvl_private *priv)
214 struct btmrvl_cmd *cmd;
219 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
221 BT_ERR("No free skb");
226 cmd = (struct btmrvl_cmd *) skb->tail;
227 cmd->ocf_ogf = cpu_to_le16((OGF << 10) | BT_CMD_HOST_SLEEP_ENABLE);
230 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
232 skb_put(skb, sizeof(*cmd));
233 skb->dev = (void *) priv->btmrvl_dev.hcidev;
234 skb_queue_head(&priv->adapter->tx_queue, skb);
236 BT_DBG("Queue hs enable Command");
238 wake_up_interruptible(&priv->main_thread.wait_q);
240 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
241 priv->adapter->hs_state,
242 msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
244 BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
245 priv->adapter->ps_state,
246 priv->adapter->wakeup_tries);
255 int btmrvl_prepare_command(struct btmrvl_private *priv)
257 struct sk_buff *skb = NULL;
258 struct btmrvl_cmd *cmd;
263 if (priv->btmrvl_dev.hscfgcmd) {
264 priv->btmrvl_dev.hscfgcmd = 0;
266 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
268 BT_ERR("No free skb");
273 cmd = (struct btmrvl_cmd *) skb->tail;
274 cmd->ocf_ogf = cpu_to_le16((OGF << 10) |
275 BT_CMD_HOST_SLEEP_CONFIG);
277 cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
278 cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
280 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
282 skb_put(skb, sizeof(*cmd));
283 skb->dev = (void *) priv->btmrvl_dev.hcidev;
284 skb_queue_head(&priv->adapter->tx_queue, skb);
286 BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x",
287 cmd->data[0], cmd->data[1]);
290 if (priv->btmrvl_dev.pscmd) {
291 priv->btmrvl_dev.pscmd = 0;
293 skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
295 BT_ERR("No free skb");
300 cmd = (struct btmrvl_cmd *) skb->tail;
301 cmd->ocf_ogf = cpu_to_le16((OGF << 10) |
302 BT_CMD_AUTO_SLEEP_MODE);
305 if (priv->btmrvl_dev.psmode)
306 cmd->data[0] = BT_PS_ENABLE;
308 cmd->data[0] = BT_PS_DISABLE;
310 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
312 skb_put(skb, sizeof(*cmd));
313 skb->dev = (void *) priv->btmrvl_dev.hcidev;
314 skb_queue_head(&priv->adapter->tx_queue, skb);
316 BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
319 if (priv->btmrvl_dev.hscmd) {
320 priv->btmrvl_dev.hscmd = 0;
322 if (priv->btmrvl_dev.hsmode) {
323 ret = btmrvl_enable_hs(priv);
325 ret = priv->hw_wakeup_firmware(priv);
326 priv->adapter->hs_state = HS_DEACTIVATED;
336 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
342 if (!skb || !skb->data) {
347 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
348 BT_ERR("Tx Error: Bad skb length %d : %d",
349 skb->len, BTM_UPLD_SIZE);
354 if (skb_headroom(skb) < BTM_HEADER_LEN) {
355 struct sk_buff *tmp = skb;
357 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
359 BT_ERR("Tx Error: realloc_headroom failed %d",
369 skb_push(skb, BTM_HEADER_LEN);
371 /* header type: byte[3]
372 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
373 * header length: byte[2][1][0]
376 skb->data[0] = (skb->len & 0x0000ff);
377 skb->data[1] = (skb->len & 0x00ff00) >> 8;
378 skb->data[2] = (skb->len & 0xff0000) >> 16;
379 skb->data[3] = bt_cb(skb)->pkt_type;
381 if (priv->hw_host_to_card)
382 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
389 static void btmrvl_init_adapter(struct btmrvl_private *priv)
393 skb_queue_head_init(&priv->adapter->tx_queue);
395 priv->adapter->ps_state = PS_AWAKE;
397 init_waitqueue_head(&priv->adapter->cmd_wait_q);
402 static void btmrvl_free_adapter(struct btmrvl_private *priv)
406 skb_queue_purge(&priv->adapter->tx_queue);
408 kfree(priv->adapter);
410 priv->adapter = NULL;
415 static int btmrvl_ioctl(struct hci_dev *hdev,
416 unsigned int cmd, unsigned long arg)
425 static void btmrvl_destruct(struct hci_dev *hdev)
432 static int btmrvl_send_frame(struct sk_buff *skb)
434 struct hci_dev *hdev = (struct hci_dev *) skb->dev;
435 struct btmrvl_private *priv = NULL;
437 BT_DBG("Enter: type=%d, len=%d", skb->pkt_type, skb->len);
439 if (!hdev || !hdev->driver_data) {
440 BT_ERR("Frame for unknown HCI device");
445 priv = (struct btmrvl_private *) hdev->driver_data;
446 if (!test_bit(HCI_RUNNING, &hdev->flags)) {
447 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
448 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
449 skb->data, skb->len);
454 switch (bt_cb(skb)->pkt_type) {
455 case HCI_COMMAND_PKT:
459 case HCI_ACLDATA_PKT:
463 case HCI_SCODATA_PKT:
468 skb_queue_tail(&priv->adapter->tx_queue, skb);
470 wake_up_interruptible(&priv->main_thread.wait_q);
477 static int btmrvl_flush(struct hci_dev *hdev)
479 struct btmrvl_private *priv = hdev->driver_data;
483 skb_queue_purge(&priv->adapter->tx_queue);
490 static int btmrvl_close(struct hci_dev *hdev)
492 struct btmrvl_private *priv = hdev->driver_data;
496 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) {
501 skb_queue_purge(&priv->adapter->tx_queue);
508 static int btmrvl_open(struct hci_dev *hdev)
512 set_bit(HCI_RUNNING, &hdev->flags);
520 * This function handles the event generated by firmware, rx data
521 * received from firmware, and tx data sent from kernel.
523 static int btmrvl_service_main_thread(void *data)
525 struct btmrvl_thread *thread = data;
526 struct btmrvl_private *priv = thread->priv;
527 struct btmrvl_adapter *adapter = priv->adapter;
534 init_waitqueue_entry(&wait, current);
536 current->flags |= PF_NOFREEZE;
539 add_wait_queue(&thread->wait_q, &wait);
541 set_current_state(TASK_INTERRUPTIBLE);
543 if (adapter->wakeup_tries ||
544 ((!adapter->int_count) &&
545 (!priv->btmrvl_dev.tx_dnld_rdy ||
546 skb_queue_empty(&adapter->tx_queue)))) {
547 BT_DBG("main_thread is sleeping...");
551 set_current_state(TASK_RUNNING);
553 remove_wait_queue(&thread->wait_q, &wait);
555 BT_DBG("main_thread woke up");
557 if (kthread_should_stop()) {
558 BT_DBG("main_thread: break from main thread");
562 spin_lock_irqsave(&priv->driver_lock, flags);
563 if (adapter->int_count) {
564 adapter->int_count = 0;
565 } else if (adapter->ps_state == PS_SLEEP &&
566 !skb_queue_empty(&adapter->tx_queue)) {
567 spin_unlock_irqrestore(&priv->driver_lock, flags);
568 adapter->wakeup_tries++;
569 priv->hw_wakeup_firmware(priv);
572 spin_unlock_irqrestore(&priv->driver_lock, flags);
574 if (adapter->ps_state == PS_SLEEP)
577 if (!priv->btmrvl_dev.tx_dnld_rdy)
580 skb = skb_dequeue(&adapter->tx_queue);
582 if (btmrvl_tx_pkt(priv, skb))
583 priv->btmrvl_dev.hcidev->stat.err_tx++;
585 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
596 struct btmrvl_private *btmrvl_add_card(void *card)
598 struct hci_dev *hdev = NULL;
599 struct btmrvl_private *priv;
604 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
606 BT_ERR("Can not allocate priv");
610 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
611 if (!priv->adapter) {
612 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
616 btmrvl_init_adapter(priv);
618 hdev = hci_alloc_dev();
620 BT_ERR("Can not allocate HCI device");
624 BT_DBG("Starting kthread...");
625 priv->main_thread.priv = priv;
626 spin_lock_init(&priv->driver_lock);
628 init_waitqueue_head(&priv->main_thread.wait_q);
629 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
630 &priv->main_thread, "btmrvl_main_service");
632 priv->btmrvl_dev.hcidev = hdev;
633 priv->btmrvl_dev.card = card;
635 hdev->driver_data = priv;
637 priv->btmrvl_dev.tx_dnld_rdy = true;
639 hdev->type = HCI_SDIO;
640 hdev->open = btmrvl_open;
641 hdev->close = btmrvl_close;
642 hdev->flush = btmrvl_flush;
643 hdev->send = btmrvl_send_frame;
644 hdev->destruct = btmrvl_destruct;
645 hdev->ioctl = btmrvl_ioctl;
646 hdev->owner = THIS_MODULE;
648 ret = hci_register_dev(hdev);
650 BT_ERR("Can not register HCI device");
651 goto err_hci_register_dev;
654 #ifdef CONFIG_DEBUG_FS
655 btmrvl_debugfs_init(hdev);
661 err_hci_register_dev:
662 /* Stop the thread servicing the interrupts */
663 kthread_stop(priv->main_thread.task);
668 btmrvl_free_adapter(priv);
678 EXPORT_SYMBOL_GPL(btmrvl_add_card);
680 int btmrvl_remove_card(struct btmrvl_private *priv)
682 struct hci_dev *hdev;
686 hdev = priv->btmrvl_dev.hcidev;
688 wake_up_interruptible(&priv->adapter->cmd_wait_q);
690 kthread_stop(priv->main_thread.task);
692 #ifdef CONFIG_DEBUG_FS
693 btmrvl_debugfs_remove(hdev);
696 hci_unregister_dev(hdev);
700 priv->btmrvl_dev.hcidev = NULL;
702 btmrvl_free_adapter(priv);
710 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
712 MODULE_AUTHOR("Marvell International Ltd.");
713 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
714 MODULE_VERSION(VERSION);
715 MODULE_LICENSE("GPL v2");