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 BT_DBG("HS ACTIVATED!");
119 BT_DBG("HS Enable failed");
123 case BT_EVENT_MODULE_CFG_REQ:
124 if (priv->btmrvl_dev.sendcmdflag &&
125 event->data[1] == MODULE_BRINGUP_REQ) {
127 ((event->data[2] == MODULE_BROUGHT_UP) ||
128 (event->data[2] == MODULE_ALREADY_UP)) ?
129 "Bring-up succeed" : "Bring-up failed");
131 if (event->length > 3 && event->data[3])
132 priv->btmrvl_dev.dev_type = HCI_AMP;
134 priv->btmrvl_dev.dev_type = HCI_BREDR;
136 BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
137 } else if (priv->btmrvl_dev.sendcmdflag &&
138 event->data[1] == MODULE_SHUTDOWN_REQ) {
139 BT_DBG("EVENT:%s", (event->data[2]) ?
140 "Shutdown failed" : "Shutdown succeed");
142 BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
147 case BT_EVENT_POWER_STATE:
148 if (event->data[1] == BT_PS_SLEEP)
149 adapter->ps_state = PS_SLEEP;
151 (adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
155 BT_DBG("Unknown Event=%d", event->data[0]);
166 EXPORT_SYMBOL_GPL(btmrvl_process_event);
168 static int btmrvl_send_sync_cmd(struct btmrvl_private *priv, u16 opcode,
169 const void *param, u8 len)
172 struct hci_command_hdr *hdr;
174 skb = bt_skb_alloc(HCI_COMMAND_HDR_SIZE + len, GFP_ATOMIC);
176 BT_ERR("No free skb");
180 hdr = (struct hci_command_hdr *)skb_put(skb, HCI_COMMAND_HDR_SIZE);
181 hdr->opcode = cpu_to_le16(opcode);
185 memcpy(skb_put(skb, len), param, len);
187 bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
189 skb_queue_head(&priv->adapter->tx_queue, skb);
191 priv->btmrvl_dev.sendcmdflag = true;
193 priv->adapter->cmd_complete = false;
195 wake_up_interruptible(&priv->main_thread.wait_q);
197 if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
198 priv->adapter->cmd_complete,
199 msecs_to_jiffies(WAIT_UNTIL_CMD_RESP)))
205 int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, u8 subcmd)
209 ret = btmrvl_send_sync_cmd(priv, BT_CMD_MODULE_CFG_REQ, &subcmd, 1);
211 BT_ERR("module_cfg_cmd(%x) failed\n", subcmd);
215 EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
217 int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
222 param[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
223 param[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
225 BT_DBG("Sending HSCFG Command, gpio=0x%x, gap=0x%x",
228 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_CONFIG, param, 2);
230 BT_ERR("HSCFG command failed\n");
234 EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);
236 int btmrvl_enable_ps(struct btmrvl_private *priv)
241 if (priv->btmrvl_dev.psmode)
242 param = BT_PS_ENABLE;
244 param = BT_PS_DISABLE;
246 ret = btmrvl_send_sync_cmd(priv, BT_CMD_AUTO_SLEEP_MODE, ¶m, 1);
248 BT_ERR("PSMODE command failed\n");
252 EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
254 int btmrvl_enable_hs(struct btmrvl_private *priv)
258 ret = btmrvl_send_sync_cmd(priv, BT_CMD_HOST_SLEEP_ENABLE, NULL, 0);
260 BT_ERR("Host sleep enable command failed\n");
264 EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
266 int btmrvl_prepare_command(struct btmrvl_private *priv)
270 if (priv->btmrvl_dev.hscfgcmd) {
271 priv->btmrvl_dev.hscfgcmd = 0;
272 btmrvl_send_hscfg_cmd(priv);
275 if (priv->btmrvl_dev.pscmd) {
276 priv->btmrvl_dev.pscmd = 0;
277 btmrvl_enable_ps(priv);
280 if (priv->btmrvl_dev.hscmd) {
281 priv->btmrvl_dev.hscmd = 0;
283 if (priv->btmrvl_dev.hsmode) {
284 ret = btmrvl_enable_hs(priv);
286 ret = priv->hw_wakeup_firmware(priv);
287 priv->adapter->hs_state = HS_DEACTIVATED;
294 static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
298 if (!skb || !skb->data)
301 if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
302 BT_ERR("Tx Error: Bad skb length %d : %d",
303 skb->len, BTM_UPLD_SIZE);
307 if (skb_headroom(skb) < BTM_HEADER_LEN) {
308 struct sk_buff *tmp = skb;
310 skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
312 BT_ERR("Tx Error: realloc_headroom failed %d",
321 skb_push(skb, BTM_HEADER_LEN);
323 /* header type: byte[3]
324 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
325 * header length: byte[2][1][0]
328 skb->data[0] = (skb->len & 0x0000ff);
329 skb->data[1] = (skb->len & 0x00ff00) >> 8;
330 skb->data[2] = (skb->len & 0xff0000) >> 16;
331 skb->data[3] = bt_cb(skb)->pkt_type;
333 if (priv->hw_host_to_card)
334 ret = priv->hw_host_to_card(priv, skb->data, skb->len);
339 static void btmrvl_init_adapter(struct btmrvl_private *priv)
343 skb_queue_head_init(&priv->adapter->tx_queue);
345 priv->adapter->ps_state = PS_AWAKE;
347 buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN);
348 priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL);
349 if (!priv->adapter->hw_regs_buf) {
350 priv->adapter->hw_regs = NULL;
351 BT_ERR("Unable to allocate buffer for hw_regs.");
353 priv->adapter->hw_regs =
354 (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf,
356 BT_DBG("hw_regs_buf=%p hw_regs=%p",
357 priv->adapter->hw_regs_buf, priv->adapter->hw_regs);
360 init_waitqueue_head(&priv->adapter->cmd_wait_q);
363 static void btmrvl_free_adapter(struct btmrvl_private *priv)
365 skb_queue_purge(&priv->adapter->tx_queue);
367 kfree(priv->adapter->hw_regs_buf);
368 kfree(priv->adapter);
370 priv->adapter = NULL;
373 static int btmrvl_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
375 struct btmrvl_private *priv = hci_get_drvdata(hdev);
377 BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
379 if (!test_bit(HCI_RUNNING, &hdev->flags)) {
380 BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
381 print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
382 skb->data, skb->len);
386 switch (bt_cb(skb)->pkt_type) {
387 case HCI_COMMAND_PKT:
391 case HCI_ACLDATA_PKT:
395 case HCI_SCODATA_PKT:
400 skb_queue_tail(&priv->adapter->tx_queue, skb);
402 wake_up_interruptible(&priv->main_thread.wait_q);
407 static int btmrvl_flush(struct hci_dev *hdev)
409 struct btmrvl_private *priv = hci_get_drvdata(hdev);
411 skb_queue_purge(&priv->adapter->tx_queue);
416 static int btmrvl_close(struct hci_dev *hdev)
418 struct btmrvl_private *priv = hci_get_drvdata(hdev);
420 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
423 skb_queue_purge(&priv->adapter->tx_queue);
428 static int btmrvl_open(struct hci_dev *hdev)
430 set_bit(HCI_RUNNING, &hdev->flags);
435 static int btmrvl_download_cal_data(struct btmrvl_private *priv,
445 print_hex_dump_bytes("Calibration data: ",
446 DUMP_PREFIX_OFFSET, data, BT_CAL_HDR_LEN + len);
448 ret = btmrvl_send_sync_cmd(priv, BT_CMD_LOAD_CONFIG_DATA, data,
449 BT_CAL_HDR_LEN + len);
451 BT_ERR("Failed to download caibration data\n");
456 static int btmrvl_cal_data_dt(struct btmrvl_private *priv)
458 struct device_node *dt_node;
459 u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
460 const char name[] = "btmrvl_caldata";
461 const char property[] = "btmrvl,caldata";
464 dt_node = of_find_node_by_name(NULL, name);
468 ret = of_property_read_u8_array(dt_node, property,
469 cal_data + BT_CAL_HDR_LEN,
474 BT_DBG("Use cal data from device tree");
475 ret = btmrvl_download_cal_data(priv, cal_data, BT_CAL_DATA_SIZE);
477 BT_ERR("Fail to download calibrate data");
484 static int btmrvl_setup(struct hci_dev *hdev)
486 struct btmrvl_private *priv = hci_get_drvdata(hdev);
488 btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
490 btmrvl_cal_data_dt(priv);
492 priv->btmrvl_dev.psmode = 1;
493 btmrvl_enable_ps(priv);
495 priv->btmrvl_dev.gpio_gap = 0xffff;
496 btmrvl_send_hscfg_cmd(priv);
502 * This function handles the event generated by firmware, rx data
503 * received from firmware, and tx data sent from kernel.
505 static int btmrvl_service_main_thread(void *data)
507 struct btmrvl_thread *thread = data;
508 struct btmrvl_private *priv = thread->priv;
509 struct btmrvl_adapter *adapter = priv->adapter;
514 init_waitqueue_entry(&wait, current);
517 add_wait_queue(&thread->wait_q, &wait);
519 set_current_state(TASK_INTERRUPTIBLE);
520 if (kthread_should_stop()) {
521 BT_DBG("main_thread: break from main thread");
525 if (adapter->wakeup_tries ||
526 ((!adapter->int_count) &&
527 (!priv->btmrvl_dev.tx_dnld_rdy ||
528 skb_queue_empty(&adapter->tx_queue)))) {
529 BT_DBG("main_thread is sleeping...");
533 set_current_state(TASK_RUNNING);
535 remove_wait_queue(&thread->wait_q, &wait);
537 BT_DBG("main_thread woke up");
539 spin_lock_irqsave(&priv->driver_lock, flags);
540 if (adapter->int_count) {
541 adapter->int_count = 0;
542 spin_unlock_irqrestore(&priv->driver_lock, flags);
543 priv->hw_process_int_status(priv);
544 } else if (adapter->ps_state == PS_SLEEP &&
545 !skb_queue_empty(&adapter->tx_queue)) {
546 spin_unlock_irqrestore(&priv->driver_lock, flags);
547 adapter->wakeup_tries++;
548 priv->hw_wakeup_firmware(priv);
551 spin_unlock_irqrestore(&priv->driver_lock, flags);
554 if (adapter->ps_state == PS_SLEEP)
557 if (!priv->btmrvl_dev.tx_dnld_rdy)
560 skb = skb_dequeue(&adapter->tx_queue);
562 if (btmrvl_tx_pkt(priv, skb))
563 priv->btmrvl_dev.hcidev->stat.err_tx++;
565 priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
574 int btmrvl_register_hdev(struct btmrvl_private *priv)
576 struct hci_dev *hdev = NULL;
579 hdev = hci_alloc_dev();
581 BT_ERR("Can not allocate HCI device");
585 priv->btmrvl_dev.hcidev = hdev;
586 hci_set_drvdata(hdev, priv);
588 hdev->bus = HCI_SDIO;
589 hdev->open = btmrvl_open;
590 hdev->close = btmrvl_close;
591 hdev->flush = btmrvl_flush;
592 hdev->send = btmrvl_send_frame;
593 hdev->setup = btmrvl_setup;
595 hdev->dev_type = priv->btmrvl_dev.dev_type;
597 ret = hci_register_dev(hdev);
599 BT_ERR("Can not register HCI device");
600 goto err_hci_register_dev;
603 #ifdef CONFIG_DEBUG_FS
604 btmrvl_debugfs_init(hdev);
609 err_hci_register_dev:
613 /* Stop the thread servicing the interrupts */
614 kthread_stop(priv->main_thread.task);
616 btmrvl_free_adapter(priv);
621 EXPORT_SYMBOL_GPL(btmrvl_register_hdev);
623 struct btmrvl_private *btmrvl_add_card(void *card)
625 struct btmrvl_private *priv;
627 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
629 BT_ERR("Can not allocate priv");
633 priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
634 if (!priv->adapter) {
635 BT_ERR("Allocate buffer for btmrvl_adapter failed!");
639 btmrvl_init_adapter(priv);
641 BT_DBG("Starting kthread...");
642 priv->main_thread.priv = priv;
643 spin_lock_init(&priv->driver_lock);
645 init_waitqueue_head(&priv->main_thread.wait_q);
646 priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
647 &priv->main_thread, "btmrvl_main_service");
649 priv->btmrvl_dev.card = card;
650 priv->btmrvl_dev.tx_dnld_rdy = true;
660 EXPORT_SYMBOL_GPL(btmrvl_add_card);
662 int btmrvl_remove_card(struct btmrvl_private *priv)
664 struct hci_dev *hdev;
666 hdev = priv->btmrvl_dev.hcidev;
668 wake_up_interruptible(&priv->adapter->cmd_wait_q);
670 kthread_stop(priv->main_thread.task);
672 #ifdef CONFIG_DEBUG_FS
673 btmrvl_debugfs_remove(hdev);
676 hci_unregister_dev(hdev);
680 priv->btmrvl_dev.hcidev = NULL;
682 btmrvl_free_adapter(priv);
688 EXPORT_SYMBOL_GPL(btmrvl_remove_card);
690 MODULE_AUTHOR("Marvell International Ltd.");
691 MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
692 MODULE_VERSION(VERSION);
693 MODULE_LICENSE("GPL v2");