[deliverable/linux.git] / drivers / bluetooth / btmrvl_main.c

/**
 * Marvell Bluetooth driver
 *
 * Copyright (C) 2009, Marvell International Ltd.
 *
 * This software file (the "File") is distributed by Marvell International
 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
 * (the "License").  You may use, redistribute and/or modify this File in
 * accordance with the terms and conditions of the License, a copy of which
 * is available by writing to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *
 *
 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 * this warranty disclaimer.
 **/

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#include "btmrvl_drv.h"

#define VERSION "1.0"

/*
 * This function is called by interface specific interrupt handler.
 * It updates Power Save & Host Sleep states, and wakes up the main
 * thread.
 */
void btmrvl_interrupt(struct btmrvl_private *priv)
{
	BT_DBG("Enter");

	priv->adapter->ps_state = PS_AWAKE;

	priv->adapter->wakeup_tries = 0;

	priv->adapter->int_count++;

	wake_up_interruptible(&priv->main_thread.wait_q);

	BT_DBG("Leave");
}
EXPORT_SYMBOL_GPL(btmrvl_interrupt);

void btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
{
	struct hci_event_hdr *hdr = (void *) skb->data;
	struct hci_ev_cmd_complete *ec;
	u16 opcode, ocf;

	BT_DBG("Enter");

	if (hdr->evt == HCI_EV_CMD_COMPLETE) {
		ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
		opcode = __le16_to_cpu(ec->opcode);
		ocf = hci_opcode_ocf(opcode);
		if (ocf == BT_CMD_MODULE_CFG_REQ &&
					priv->btmrvl_dev.sendcmdflag) {
			priv->btmrvl_dev.sendcmdflag = false;
			priv->adapter->cmd_complete = true;
			wake_up_interruptible(&priv->adapter->cmd_wait_q);
		}
	}

	BT_DBG("Leave");
}
EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);

int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
{
	struct btmrvl_adapter *adapter = priv->adapter;
	struct btmrvl_event *event;
	u8 ret = 0;

	BT_DBG("Enter");

	event = (struct btmrvl_event *) skb->data;
	if (event->ec != 0xff) {
		BT_DBG("Not Marvell Event=%x", event->ec);
		ret = -EINVAL;
		goto exit;
	}

	switch (event->data[0]) {
	case BT_CMD_AUTO_SLEEP_MODE:
		if (!event->data[2]) {
			if (event->data[1] == BT_PS_ENABLE)
				adapter->psmode = 1;
			else
				adapter->psmode = 0;
			BT_DBG("PS Mode:%s",
				(adapter->psmode) ? "Enable" : "Disable");
		} else {
			BT_DBG("PS Mode command failed");
		}
		break;

	case BT_CMD_HOST_SLEEP_CONFIG:
		if (!event->data[3])
			BT_DBG("gpio=%x, gap=%x", event->data[1],
							event->data[2]);
		else
			BT_DBG("HSCFG command failed");
		break;

	case BT_CMD_HOST_SLEEP_ENABLE:
		if (!event->data[1]) {
			adapter->hs_state = HS_ACTIVATED;
			if (adapter->psmode)
				adapter->ps_state = PS_SLEEP;
			wake_up_interruptible(&adapter->cmd_wait_q);
			BT_DBG("HS ACTIVATED!");
		} else {
			BT_DBG("HS Enable failed");
		}
		break;

	case BT_CMD_MODULE_CFG_REQ:
		if (priv->btmrvl_dev.sendcmdflag &&
				event->data[1] == MODULE_BRINGUP_REQ) {
			BT_DBG("EVENT:%s", (event->data[2]) ?
				"Bring-up failed" : "Bring-up succeed");
		} else if (priv->btmrvl_dev.sendcmdflag &&
				event->data[1] == MODULE_SHUTDOWN_REQ) {
			BT_DBG("EVENT:%s", (event->data[2]) ?
				"Shutdown failed" : "Shutdown succeed");
		} else {
			BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
			ret = -EINVAL;
		}
		break;

	case BT_EVENT_POWER_STATE:
		if (event->data[1] == BT_PS_SLEEP)
			adapter->ps_state = PS_SLEEP;
		BT_DBG("EVENT:%s",
			(adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
		break;

	default:
		BT_DBG("Unknown Event=%d", event->data[0]);
		ret = -EINVAL;
		break;
	}

exit:
	if (!ret)
		kfree_skb(skb);

	BT_DBG("Leave");

	return ret;
}
EXPORT_SYMBOL_GPL(btmrvl_process_event);

int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
{
	struct sk_buff *skb;
	struct btmrvl_cmd *cmd;
	u8 ret = 0;

	BT_DBG("Enter");

	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	if (skb == NULL) {
		BT_ERR("No free skb");
		ret = -ENOMEM;
		goto exit;
	}

	cmd = skb_put(skb, sizeof(*cmd));
	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_MODULE_CFG_REQ));
	cmd->length = 1;
	cmd->data[0] = subcmd;

	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;

	skb->dev = (void *) priv->btmrvl_dev.hcidev;
	skb_queue_head(&priv->adapter->tx_queue, skb);

	priv->btmrvl_dev.sendcmdflag = true;

	priv->adapter->cmd_complete = false;

	BT_DBG("Queue module cfg Command");

	wake_up_interruptible(&priv->main_thread.wait_q);

	if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
				priv->adapter->cmd_complete,
				msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) {
		ret = -ETIMEDOUT;
		BT_ERR("module_cfg_cmd(%x): timeout: %d",
					subcmd, priv->btmrvl_dev.sendcmdflag);
	}

	BT_DBG("module cfg Command done");

exit:
	BT_DBG("Leave");

	return ret;
}
EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);

static int btmrvl_enable_hs(struct btmrvl_private *priv)
{
	struct sk_buff *skb;
	struct btmrvl_cmd *cmd;
	u8 ret = 0;

	BT_DBG("Enter");

	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	if (skb == NULL) {
		BT_ERR("No free skb");
		ret = -ENOMEM;
		goto exit;
	}

	cmd = skb_put(skb, sizeof(*cmd));
	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_ENABLE));
	cmd->length = 0;

	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;

	skb->dev = (void *) priv->btmrvl_dev.hcidev;
	skb_queue_head(&priv->adapter->tx_queue, skb);

	BT_DBG("Queue hs enable Command");

	wake_up_interruptible(&priv->main_thread.wait_q);

	if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
			priv->adapter->hs_state,
			msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
		ret = -ETIMEDOUT;
		BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
						priv->adapter->ps_state,
						priv->adapter->wakeup_tries);
	}

exit:
	BT_DBG("Leave");

	return ret;
}

int btmrvl_prepare_command(struct btmrvl_private *priv)
{
	struct sk_buff *skb = NULL;
	struct btmrvl_cmd *cmd;
	u8 ret = 0;

	BT_DBG("Enter");

	if (priv->btmrvl_dev.hscfgcmd) {
		priv->btmrvl_dev.hscfgcmd = 0;

		skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
		if (skb == NULL) {
			BT_ERR("No free skb");
			ret = -ENOMEM;
			goto exit;
		}

		cmd = skb_put(skb, sizeof(*cmd));
		cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_CONFIG));
		cmd->length = 2;
		cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
		cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);

		bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;

		skb->dev = (void *) priv->btmrvl_dev.hcidev;
		skb_queue_head(&priv->adapter->tx_queue, skb);

		BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x",
						cmd->data[0], cmd->data[1]);
	}

	if (priv->btmrvl_dev.pscmd) {
		priv->btmrvl_dev.pscmd = 0;

		skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
		if (skb == NULL) {
			BT_ERR("No free skb");
			ret = -ENOMEM;
			goto exit;
		}

		cmd = skb_put(skb, sizeof(*cmd));
		cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_AUTO_SLEEP_MODE));
		cmd->length = 1;

		if (priv->btmrvl_dev.psmode)
			cmd->data[0] = BT_PS_ENABLE;
		else
			cmd->data[0] = BT_PS_DISABLE;

		bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;

		skb->dev = (void *) priv->btmrvl_dev.hcidev;
		skb_queue_head(&priv->adapter->tx_queue, skb);

		BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
	}

	if (priv->btmrvl_dev.hscmd) {
		priv->btmrvl_dev.hscmd = 0;

		if (priv->btmrvl_dev.hsmode) {
			ret = btmrvl_enable_hs(priv);
		} else {
			ret = priv->hw_wakeup_firmware(priv);
			priv->adapter->hs_state = HS_DEACTIVATED;
		}
	}

exit:
	BT_DBG("Leave");

	return ret;
}

static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
{
	u8 ret = 0;

	BT_DBG("Enter");

	if (!skb || !skb->data) {
		BT_DBG("Leave");
		return -EINVAL;
	}

	if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
		BT_ERR("Tx Error: Bad skb length %d : %d",
						skb->len, BTM_UPLD_SIZE);
		BT_DBG("Leave");
		return -EINVAL;
	}

	if (skb_headroom(skb) < BTM_HEADER_LEN) {
		struct sk_buff *tmp = skb;

		skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
		if (!skb) {
			BT_ERR("Tx Error: realloc_headroom failed %d",
				BTM_HEADER_LEN);
			skb = tmp;
			BT_DBG("Leave");
			return -EINVAL;
		}

		kfree_skb(tmp);
	}

	skb_push(skb, BTM_HEADER_LEN);

	/* header type: byte[3]
	 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
	 * header length: byte[2][1][0]
	 */

	skb->data[0] = (skb->len & 0x0000ff);
	skb->data[1] = (skb->len & 0x00ff00) >> 8;
	skb->data[2] = (skb->len & 0xff0000) >> 16;
	skb->data[3] = bt_cb(skb)->pkt_type;

	if (priv->hw_host_to_card)
		ret = priv->hw_host_to_card(priv, skb->data, skb->len);

	BT_DBG("Leave");

	return ret;
}

static void btmrvl_init_adapter(struct btmrvl_private *priv)
{
	BT_DBG("Enter");

	skb_queue_head_init(&priv->adapter->tx_queue);

	priv->adapter->ps_state = PS_AWAKE;

	init_waitqueue_head(&priv->adapter->cmd_wait_q);

	BT_DBG("Leave");
}

static void btmrvl_free_adapter(struct btmrvl_private *priv)
{
	BT_DBG("Enter");

	skb_queue_purge(&priv->adapter->tx_queue);

	kfree(priv->adapter);

	priv->adapter = NULL;

	BT_DBG("Leave");
}

static int btmrvl_ioctl(struct hci_dev *hdev,
				unsigned int cmd, unsigned long arg)
{
	BT_DBG("Enter");

	BT_DBG("Leave");

	return -ENOIOCTLCMD;
}

static void btmrvl_destruct(struct hci_dev *hdev)
{
	BT_DBG("Enter");

	BT_DBG("Leave");
}

static int btmrvl_send_frame(struct sk_buff *skb)
{
	struct hci_dev *hdev = (struct hci_dev *) skb->dev;
	struct btmrvl_private *priv = NULL;

	BT_DBG("Enter: type=%d, len=%d", skb->pkt_type, skb->len);

	if (!hdev || !hdev->driver_data) {
		BT_ERR("Frame for unknown HCI device");
		BT_DBG("Leave");
		return -ENODEV;
	}

	priv = (struct btmrvl_private *) hdev->driver_data;
	if (!test_bit(HCI_RUNNING, &hdev->flags)) {
		BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
		print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
							skb->data, skb->len);
		BT_DBG("Leave");
		return -EBUSY;
	}

	switch (bt_cb(skb)->pkt_type) {
	case HCI_COMMAND_PKT:
		hdev->stat.cmd_tx++;
		break;

	case HCI_ACLDATA_PKT:
		hdev->stat.acl_tx++;
		break;

	case HCI_SCODATA_PKT:
		hdev->stat.sco_tx++;
		break;
	}

	skb_queue_tail(&priv->adapter->tx_queue, skb);

	wake_up_interruptible(&priv->main_thread.wait_q);

	BT_DBG("Leave");

	return 0;
}

static int btmrvl_flush(struct hci_dev *hdev)
{
	struct btmrvl_private *priv = hdev->driver_data;

	BT_DBG("Enter");

	skb_queue_purge(&priv->adapter->tx_queue);

	BT_DBG("Leave");

	return 0;
}

static int btmrvl_close(struct hci_dev *hdev)
{
	struct btmrvl_private *priv = hdev->driver_data;

	BT_DBG("Enter");

	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) {
		BT_DBG("Leave");
		return 0;
	}

	skb_queue_purge(&priv->adapter->tx_queue);

	BT_DBG("Leave");

	return 0;
}

static int btmrvl_open(struct hci_dev *hdev)
{
	BT_DBG("Enter");

	set_bit(HCI_RUNNING, &hdev->flags);

	BT_DBG("Leave");

	return 0;
}

/*
 * This function handles the event generated by firmware, rx data
 * received from firmware, and tx data sent from kernel.
 */
static int btmrvl_service_main_thread(void *data)
{
	struct btmrvl_thread *thread = data;
	struct btmrvl_private *priv = thread->priv;
	struct btmrvl_adapter *adapter = priv->adapter;
	wait_queue_t wait;
	struct sk_buff *skb;
	ulong flags;

	BT_DBG("Enter");

	init_waitqueue_entry(&wait, current);

	current->flags |= PF_NOFREEZE;

	for (;;) {
		add_wait_queue(&thread->wait_q, &wait);

		set_current_state(TASK_INTERRUPTIBLE);

		if (adapter->wakeup_tries ||
				((!adapter->int_count) &&
				(!priv->btmrvl_dev.tx_dnld_rdy ||
				skb_queue_empty(&adapter->tx_queue)))) {
			BT_DBG("main_thread is sleeping...");
			schedule();
		}

		set_current_state(TASK_RUNNING);

		remove_wait_queue(&thread->wait_q, &wait);

		BT_DBG("main_thread woke up");

		if (kthread_should_stop()) {
			BT_DBG("main_thread: break from main thread");
			break;
		}

		spin_lock_irqsave(&priv->driver_lock, flags);
		if (adapter->int_count) {
			adapter->int_count = 0;
		} else if (adapter->ps_state == PS_SLEEP &&
					!skb_queue_empty(&adapter->tx_queue)) {
			spin_unlock_irqrestore(&priv->driver_lock, flags);
			adapter->wakeup_tries++;
			priv->hw_wakeup_firmware(priv);
			continue;
		}
		spin_unlock_irqrestore(&priv->driver_lock, flags);

		if (adapter->ps_state == PS_SLEEP)
			continue;

		if (!priv->btmrvl_dev.tx_dnld_rdy)
			continue;

		skb = skb_dequeue(&adapter->tx_queue);
		if (skb) {
			if (btmrvl_tx_pkt(priv, skb))
				priv->btmrvl_dev.hcidev->stat.err_tx++;
			else
				priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;

			kfree_skb(skb);
		}
	}

	BT_DBG("Leave");

	return 0;
}

struct btmrvl_private *btmrvl_add_card(void *card)
{
	struct hci_dev *hdev = NULL;
	struct btmrvl_private *priv;
	int ret;

	BT_DBG("Enter");

	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv) {
		BT_ERR("Can not allocate priv");
		goto err_priv;
	}

	priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
	if (!priv->adapter) {
		BT_ERR("Allocate buffer for btmrvl_adapter failed!");
		goto err_adapter;
	}

	btmrvl_init_adapter(priv);

	hdev = hci_alloc_dev();
	if (!hdev) {
		BT_ERR("Can not allocate HCI device");
		goto err_hdev;
	}

	BT_DBG("Starting kthread...");
	priv->main_thread.priv = priv;
	spin_lock_init(&priv->driver_lock);

	init_waitqueue_head(&priv->main_thread.wait_q);
	priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
				&priv->main_thread, "btmrvl_main_service");

	priv->btmrvl_dev.hcidev = hdev;
	priv->btmrvl_dev.card = card;

	hdev->driver_data = priv;

	priv->btmrvl_dev.tx_dnld_rdy = true;

	hdev->type = HCI_SDIO;
	hdev->open = btmrvl_open;
	hdev->close = btmrvl_close;
	hdev->flush = btmrvl_flush;
	hdev->send = btmrvl_send_frame;
	hdev->destruct = btmrvl_destruct;
	hdev->ioctl = btmrvl_ioctl;
	hdev->owner = THIS_MODULE;

	ret = hci_register_dev(hdev);
	if (ret < 0) {
		BT_ERR("Can not register HCI device");
		goto err_hci_register_dev;
	}

#ifdef CONFIG_DEBUG_FS
	btmrvl_debugfs_init(hdev);
#endif

	BT_DBG("Leave");
	return priv;

err_hci_register_dev:
	/* Stop the thread servicing the interrupts */
	kthread_stop(priv->main_thread.task);

	hci_free_dev(hdev);

err_hdev:
	btmrvl_free_adapter(priv);

err_adapter:
	kfree(priv);

err_priv:
	BT_DBG("Leave");

	return NULL;
}
EXPORT_SYMBOL_GPL(btmrvl_add_card);

int btmrvl_remove_card(struct btmrvl_private *priv)
{
	struct hci_dev *hdev;

	BT_DBG("Enter");

	hdev = priv->btmrvl_dev.hcidev;

	wake_up_interruptible(&priv->adapter->cmd_wait_q);

	kthread_stop(priv->main_thread.task);

#ifdef CONFIG_DEBUG_FS
	btmrvl_debugfs_remove(hdev);
#endif

	hci_unregister_dev(hdev);

	hci_free_dev(hdev);

	priv->btmrvl_dev.hcidev = NULL;

	btmrvl_free_adapter(priv);

	kfree(priv);

	BT_DBG("Leave");

	return 0;
}
EXPORT_SYMBOL_GPL(btmrvl_remove_card);

MODULE_AUTHOR("Marvell International Ltd.");
MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL v2");
Commit	Line	Data
132ff4e5 BZ	1	/**
	2	* Marvell Bluetooth driver
	3	*
	4	* Copyright (C) 2009, Marvell International Ltd.
	5	*
	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.
	13	*
	14	*
	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.
	19	**/
	20
	21	#include <net/bluetooth/bluetooth.h>
	22	#include <net/bluetooth/hci_core.h>
	23
	24	#include "btmrvl_drv.h"
	25
	26	#define VERSION "1.0"
	27
	28	/*
	29	* This function is called by interface specific interrupt handler.
	30	* It updates Power Save & Host Sleep states, and wakes up the main
	31	* thread.
	32	*/
	33	void btmrvl_interrupt(struct btmrvl_private *priv)
	34	{
	35	BT_DBG("Enter");
	36
	37	priv->adapter->ps_state = PS_AWAKE;
	38
	39	priv->adapter->wakeup_tries = 0;
	40
	41	priv->adapter->int_count++;
	42
	43	wake_up_interruptible(&priv->main_thread.wait_q);
	44
	45	BT_DBG("Leave");
	46	}
	47	EXPORT_SYMBOL_GPL(btmrvl_interrupt);
	48
	49	void btmrvl_check_evtpkt(struct btmrvl_private priv, struct sk_buff skb)
	50	{
4271e08d	51	struct hci_event_hdr hdr = (void ) skb->data;
132ff4e5 BZ	52	struct hci_ev_cmd_complete *ec;
	53	u16 opcode, ocf;
	54
	55	BT_DBG("Enter");
	56
	57	if (hdr->evt == HCI_EV_CMD_COMPLETE) {
4271e08d	58	ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
132ff4e5 BZ	59	opcode = __le16_to_cpu(ec->opcode);
132ff4e5 BZ	60	ocf = hci_opcode_ocf(opcode);
4271e08d MH	61	if (ocf == BT_CMD_MODULE_CFG_REQ &&
4271e08d MH	62	priv->btmrvl_dev.sendcmdflag) {
132ff4e5 BZ	63	priv->btmrvl_dev.sendcmdflag = false;
	64	priv->adapter->cmd_complete = true;
	65	wake_up_interruptible(&priv->adapter->cmd_wait_q);
	66	}
	67	}
	68
	69	BT_DBG("Leave");
	70	}
	71	EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
	72
	73	int btmrvl_process_event(struct btmrvl_private priv, struct sk_buff skb)
	74	{
	75	struct btmrvl_adapter *adapter = priv->adapter;
132ff4e5	76	struct btmrvl_event *event;
4271e08d	77	u8 ret = 0;
132ff4e5 BZ	78
	79	BT_DBG("Enter");
	80
	81	event = (struct btmrvl_event *) skb->data;
	82	if (event->ec != 0xff) {
	83	BT_DBG("Not Marvell Event=%x", event->ec);
	84	ret = -EINVAL;
	85	goto exit;
	86	}
	87
	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)
	92	adapter->psmode = 1;
	93	else
	94	adapter->psmode = 0;
	95	BT_DBG("PS Mode:%s",
	96	(adapter->psmode) ? "Enable" : "Disable");
	97	} else {
	98	BT_DBG("PS Mode command failed");
	99	}
	100	break;
	101
	102	case BT_CMD_HOST_SLEEP_CONFIG:
	103	if (!event->data[3])
	104	BT_DBG("gpio=%x, gap=%x", event->data[1],
4271e08d	105	event->data[2]);
132ff4e5 BZ	106	else
	107	BT_DBG("HSCFG command failed");
	108	break;
	109
	110	case BT_CMD_HOST_SLEEP_ENABLE:
	111	if (!event->data[1]) {
	112	adapter->hs_state = HS_ACTIVATED;
	113	if (adapter->psmode)
	114	adapter->ps_state = PS_SLEEP;
	115	wake_up_interruptible(&adapter->cmd_wait_q);
	116	BT_DBG("HS ACTIVATED!");
	117	} else {
	118	BT_DBG("HS Enable failed");
	119	}
	120	break;
	121
	122	case BT_CMD_MODULE_CFG_REQ:
4271e08d MH	123	if (priv->btmrvl_dev.sendcmdflag &&
4271e08d MH	124	event->data[1] == MODULE_BRINGUP_REQ) {
132ff4e5 BZ	125	BT_DBG("EVENT:%s", (event->data[2]) ?
132ff4e5 BZ	126	"Bring-up failed" : "Bring-up succeed");
4271e08d MH	127	} else if (priv->btmrvl_dev.sendcmdflag &&
4271e08d MH	128	event->data[1] == MODULE_SHUTDOWN_REQ) {
132ff4e5 BZ	129	BT_DBG("EVENT:%s", (event->data[2]) ?
	130	"Shutdown failed" : "Shutdown succeed");
	131	} else {
	132	BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
	133	ret = -EINVAL;
	134	}
	135	break;
	136
	137	case BT_EVENT_POWER_STATE:
	138	if (event->data[1] == BT_PS_SLEEP)
	139	adapter->ps_state = PS_SLEEP;
	140	BT_DBG("EVENT:%s",
	141	(adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
	142	break;
	143
	144	default:
	145	BT_DBG("Unknown Event=%d", event->data[0]);
	146	ret = -EINVAL;
	147	break;
	148	}
	149
	150	exit:
	151	if (!ret)
	152	kfree_skb(skb);
	153
	154	BT_DBG("Leave");
	155
	156	return ret;
	157	}
	158	EXPORT_SYMBOL_GPL(btmrvl_process_event);
	159
	160	int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
	161	{
4271e08d	162	struct sk_buff *skb;
132ff4e5	163	struct btmrvl_cmd *cmd;
4271e08d	164	u8 ret = 0;
132ff4e5 BZ	165
	166	BT_DBG("Enter");
	167
	168	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	169	if (skb == NULL) {
	170	BT_ERR("No free skb");
	171	ret = -ENOMEM;
	172	goto exit;
	173	}
	174
91d69730 MH	175	cmd = skb_put(skb, sizeof(*cmd));
91d69730 MH	176	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_MODULE_CFG_REQ));
132ff4e5 BZ	177	cmd->length = 1;
	178	cmd->data[0] = subcmd;
	179
	180	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
	181
4271e08d	182	skb->dev = (void *) priv->btmrvl_dev.hcidev;
132ff4e5 BZ	183	skb_queue_head(&priv->adapter->tx_queue, skb);
	184
	185	priv->btmrvl_dev.sendcmdflag = true;
	186
	187	priv->adapter->cmd_complete = false;
	188
	189	BT_DBG("Queue module cfg Command");
	190
	191	wake_up_interruptible(&priv->main_thread.wait_q);
	192
4271e08d MH	193	if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
	194	priv->adapter->cmd_complete,
	195	msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) {
132ff4e5 BZ	196	ret = -ETIMEDOUT;
132ff4e5 BZ	197	BT_ERR("module_cfg_cmd(%x): timeout: %d",
4271e08d	198	subcmd, priv->btmrvl_dev.sendcmdflag);
132ff4e5 BZ	199	}
	200
	201	BT_DBG("module cfg Command done");
	202
	203	exit:
	204	BT_DBG("Leave");
	205
	206	return ret;
	207	}
	208	EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
	209
	210	static int btmrvl_enable_hs(struct btmrvl_private *priv)
	211	{
4271e08d	212	struct sk_buff *skb;
132ff4e5	213	struct btmrvl_cmd *cmd;
4271e08d	214	u8 ret = 0;
132ff4e5 BZ	215
	216	BT_DBG("Enter");
	217
	218	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	219	if (skb == NULL) {
	220	BT_ERR("No free skb");
	221	ret = -ENOMEM;
	222	goto exit;
	223	}
	224
91d69730 MH	225	cmd = skb_put(skb, sizeof(*cmd));
91d69730 MH	226	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_ENABLE));
132ff4e5 BZ	227	cmd->length = 0;
	228
	229	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
	230
4271e08d	231	skb->dev = (void *) priv->btmrvl_dev.hcidev;
132ff4e5 BZ	232	skb_queue_head(&priv->adapter->tx_queue, skb);
	233
	234	BT_DBG("Queue hs enable Command");
	235
	236	wake_up_interruptible(&priv->main_thread.wait_q);
	237
4271e08d	238	if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
132ff4e5 BZ	239	priv->adapter->hs_state,
	240	msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
	241	ret = -ETIMEDOUT;
4271e08d MH	242	BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
	243	priv->adapter->ps_state,
	244	priv->adapter->wakeup_tries);
132ff4e5 BZ	245	}
	246
	247	exit:
	248	BT_DBG("Leave");
	249
	250	return ret;
	251	}
	252
	253	int btmrvl_prepare_command(struct btmrvl_private *priv)
	254	{
	255	struct sk_buff *skb = NULL;
132ff4e5	256	struct btmrvl_cmd *cmd;
4271e08d	257	u8 ret = 0;
132ff4e5 BZ	258
	259	BT_DBG("Enter");
	260
	261	if (priv->btmrvl_dev.hscfgcmd) {
	262	priv->btmrvl_dev.hscfgcmd = 0;
	263
	264	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	265	if (skb == NULL) {
	266	BT_ERR("No free skb");
	267	ret = -ENOMEM;
	268	goto exit;
	269	}
	270
91d69730 MH	271	cmd = skb_put(skb, sizeof(*cmd));
91d69730 MH	272	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_CONFIG));
132ff4e5 BZ	273	cmd->length = 2;
	274	cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
	275	cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
	276
	277	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
	278
4271e08d	279	skb->dev = (void *) priv->btmrvl_dev.hcidev;
132ff4e5 BZ	280	skb_queue_head(&priv->adapter->tx_queue, skb);
	281
	282	BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x",
4271e08d	283	cmd->data[0], cmd->data[1]);
132ff4e5 BZ	284	}
	285
	286	if (priv->btmrvl_dev.pscmd) {
	287	priv->btmrvl_dev.pscmd = 0;
	288
	289	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	290	if (skb == NULL) {
	291	BT_ERR("No free skb");
	292	ret = -ENOMEM;
	293	goto exit;
	294	}
	295
91d69730 MH	296	cmd = skb_put(skb, sizeof(*cmd));
91d69730 MH	297	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_AUTO_SLEEP_MODE));
132ff4e5 BZ	298	cmd->length = 1;
	299
	300	if (priv->btmrvl_dev.psmode)
	301	cmd->data[0] = BT_PS_ENABLE;
	302	else
	303	cmd->data[0] = BT_PS_DISABLE;
	304
	305	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
	306
4271e08d	307	skb->dev = (void *) priv->btmrvl_dev.hcidev;
132ff4e5 BZ	308	skb_queue_head(&priv->adapter->tx_queue, skb);
	309
	310	BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
	311	}
	312
	313	if (priv->btmrvl_dev.hscmd) {
	314	priv->btmrvl_dev.hscmd = 0;
	315
	316	if (priv->btmrvl_dev.hsmode) {
	317	ret = btmrvl_enable_hs(priv);
	318	} else {
	319	ret = priv->hw_wakeup_firmware(priv);
	320	priv->adapter->hs_state = HS_DEACTIVATED;
	321	}
	322	}
	323
	324	exit:
	325	BT_DBG("Leave");
	326
	327	return ret;
	328	}
	329
	330	static int btmrvl_tx_pkt(struct btmrvl_private priv, struct sk_buff skb)
	331	{
	332	u8 ret = 0;
	333
	334	BT_DBG("Enter");
	335
	336	if (!skb \|\| !skb->data) {
	337	BT_DBG("Leave");
	338	return -EINVAL;
	339	}
	340
	341	if (!skb->len \|\| ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
	342	BT_ERR("Tx Error: Bad skb length %d : %d",
4271e08d	343	skb->len, BTM_UPLD_SIZE);
132ff4e5 BZ	344	BT_DBG("Leave");
	345	return -EINVAL;
	346	}
	347
	348	if (skb_headroom(skb) < BTM_HEADER_LEN) {
	349	struct sk_buff *tmp = skb;
	350
	351	skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
	352	if (!skb) {
	353	BT_ERR("Tx Error: realloc_headroom failed %d",
	354	BTM_HEADER_LEN);
	355	skb = tmp;
	356	BT_DBG("Leave");
	357	return -EINVAL;
	358	}
	359
	360	kfree_skb(tmp);
	361	}
	362
	363	skb_push(skb, BTM_HEADER_LEN);
	364
	365	/* header type: byte[3]
	366	* HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
	367	* header length: byte[2][1][0]
	368	*/
	369
	370	skb->data[0] = (skb->len & 0x0000ff);
	371	skb->data[1] = (skb->len & 0x00ff00) >> 8;
	372	skb->data[2] = (skb->len & 0xff0000) >> 16;
	373	skb->data[3] = bt_cb(skb)->pkt_type;
	374
	375	if (priv->hw_host_to_card)
	376	ret = priv->hw_host_to_card(priv, skb->data, skb->len);
	377
	378	BT_DBG("Leave");
	379
	380	return ret;
	381	}
	382
	383	static void btmrvl_init_adapter(struct btmrvl_private *priv)
	384	{
	385	BT_DBG("Enter");
	386
	387	skb_queue_head_init(&priv->adapter->tx_queue);
	388
	389	priv->adapter->ps_state = PS_AWAKE;
	390
	391	init_waitqueue_head(&priv->adapter->cmd_wait_q);
	392
	393	BT_DBG("Leave");
	394	}
	395
	396	static void btmrvl_free_adapter(struct btmrvl_private *priv)
	397	{
	398	BT_DBG("Enter");
	399
	400	skb_queue_purge(&priv->adapter->tx_queue);
	401
	402	kfree(priv->adapter);
	403
	404	priv->adapter = NULL;
	405
	406	BT_DBG("Leave");
	407	}
408
4271e08d MH	409	static int btmrvl_ioctl(struct hci_dev *hdev,
4271e08d MH	410	unsigned int cmd, unsigned long arg)
132ff4e5 BZ	411	{
	412	BT_DBG("Enter");
	413
	414	BT_DBG("Leave");
	415
	416	return -ENOIOCTLCMD;
	417	}
	418
	419	static void btmrvl_destruct(struct hci_dev *hdev)
	420	{
	421	BT_DBG("Enter");
	422
	423	BT_DBG("Leave");
	424	}
	425
	426	static int btmrvl_send_frame(struct sk_buff *skb)
	427	{
4271e08d	428	struct hci_dev hdev = (struct hci_dev ) skb->dev;
132ff4e5 BZ	429	struct btmrvl_private *priv = NULL;
	430
	431	BT_DBG("Enter: type=%d, len=%d", skb->pkt_type, skb->len);
	432
	433	if (!hdev \|\| !hdev->driver_data) {
	434	BT_ERR("Frame for unknown HCI device");
	435	BT_DBG("Leave");
	436	return -ENODEV;
	437	}
	438
4271e08d	439	priv = (struct btmrvl_private *) hdev->driver_data;
132ff4e5 BZ	440	if (!test_bit(HCI_RUNNING, &hdev->flags)) {
	441	BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
	442	print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
4271e08d	443	skb->data, skb->len);
132ff4e5 BZ	444	BT_DBG("Leave");
	445	return -EBUSY;
	446	}
	447
	448	switch (bt_cb(skb)->pkt_type) {
	449	case HCI_COMMAND_PKT:
	450	hdev->stat.cmd_tx++;
	451	break;
	452
	453	case HCI_ACLDATA_PKT:
	454	hdev->stat.acl_tx++;
	455	break;
	456
	457	case HCI_SCODATA_PKT:
	458	hdev->stat.sco_tx++;
	459	break;
	460	}
	461
	462	skb_queue_tail(&priv->adapter->tx_queue, skb);
	463
	464	wake_up_interruptible(&priv->main_thread.wait_q);
	465
	466	BT_DBG("Leave");
	467
	468	return 0;
	469	}
	470
	471	static int btmrvl_flush(struct hci_dev *hdev)
	472	{
4271e08d	473	struct btmrvl_private *priv = hdev->driver_data;
132ff4e5 BZ	474
	475	BT_DBG("Enter");
	476
	477	skb_queue_purge(&priv->adapter->tx_queue);
	478
	479	BT_DBG("Leave");
	480
	481	return 0;
	482	}
	483
	484	static int btmrvl_close(struct hci_dev *hdev)
	485	{
4271e08d	486	struct btmrvl_private *priv = hdev->driver_data;
132ff4e5 BZ	487
	488	BT_DBG("Enter");
	489
	490	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) {
	491	BT_DBG("Leave");
	492	return 0;
	493	}
	494
	495	skb_queue_purge(&priv->adapter->tx_queue);
	496
	497	BT_DBG("Leave");
	498
	499	return 0;
	500	}
	501
	502	static int btmrvl_open(struct hci_dev *hdev)
	503	{
	504	BT_DBG("Enter");
	505
	506	set_bit(HCI_RUNNING, &hdev->flags);
	507
	508	BT_DBG("Leave");
	509
	510	return 0;
	511	}
	512
	513	/*
	514	* This function handles the event generated by firmware, rx data
	515	* received from firmware, and tx data sent from kernel.
	516	*/
	517	static int btmrvl_service_main_thread(void *data)
	518	{
	519	struct btmrvl_thread *thread = data;
	520	struct btmrvl_private *priv = thread->priv;
	521	struct btmrvl_adapter *adapter = priv->adapter;
	522	wait_queue_t wait;
	523	struct sk_buff *skb;
	524	ulong flags;
	525
	526	BT_DBG("Enter");
	527
	528	init_waitqueue_entry(&wait, current);
	529
	530	current->flags \|= PF_NOFREEZE;
	531
	532	for (;;) {
	533	add_wait_queue(&thread->wait_q, &wait);
	534
	535	set_current_state(TASK_INTERRUPTIBLE);
	536
	537	if (adapter->wakeup_tries \|\|
4271e08d MH	538	((!adapter->int_count) &&
	539	(!priv->btmrvl_dev.tx_dnld_rdy \|\|
	540	skb_queue_empty(&adapter->tx_queue)))) {
132ff4e5 BZ	541	BT_DBG("main_thread is sleeping...");
	542	schedule();
	543	}
	544
	545	set_current_state(TASK_RUNNING);
	546
	547	remove_wait_queue(&thread->wait_q, &wait);
	548
	549	BT_DBG("main_thread woke up");
	550
	551	if (kthread_should_stop()) {
	552	BT_DBG("main_thread: break from main thread");
	553	break;
	554	}
	555
	556	spin_lock_irqsave(&priv->driver_lock, flags);
	557	if (adapter->int_count) {
	558	adapter->int_count = 0;
4271e08d MH	559	} else if (adapter->ps_state == PS_SLEEP &&
4271e08d MH	560	!skb_queue_empty(&adapter->tx_queue)) {
132ff4e5 BZ	561	spin_unlock_irqrestore(&priv->driver_lock, flags);
	562	adapter->wakeup_tries++;
	563	priv->hw_wakeup_firmware(priv);
	564	continue;
	565	}
	566	spin_unlock_irqrestore(&priv->driver_lock, flags);
	567
	568	if (adapter->ps_state == PS_SLEEP)
	569	continue;
	570
	571	if (!priv->btmrvl_dev.tx_dnld_rdy)
	572	continue;
	573
	574	skb = skb_dequeue(&adapter->tx_queue);
	575	if (skb) {
	576	if (btmrvl_tx_pkt(priv, skb))
	577	priv->btmrvl_dev.hcidev->stat.err_tx++;
	578	else
4271e08d	579	priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
132ff4e5 BZ	580
	581	kfree_skb(skb);
	582	}
	583	}
	584
	585	BT_DBG("Leave");
	586
	587	return 0;
	588	}
	589
	590	struct btmrvl_private btmrvl_add_card(void card)
	591	{
	592	struct hci_dev *hdev = NULL;
4271e08d	593	struct btmrvl_private *priv;
132ff4e5 BZ	594	int ret;
	595
	596	BT_DBG("Enter");
	597
	598	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	599	if (!priv) {
	600	BT_ERR("Can not allocate priv");
	601	goto err_priv;
	602	}
	603
	604	priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
	605	if (!priv->adapter) {
	606	BT_ERR("Allocate buffer for btmrvl_adapter failed!");
	607	goto err_adapter;
	608	}
	609
	610	btmrvl_init_adapter(priv);
	611
	612	hdev = hci_alloc_dev();
	613	if (!hdev) {
	614	BT_ERR("Can not allocate HCI device");
	615	goto err_hdev;
	616	}
	617
	618	BT_DBG("Starting kthread...");
	619	priv->main_thread.priv = priv;
	620	spin_lock_init(&priv->driver_lock);
	621
	622	init_waitqueue_head(&priv->main_thread.wait_q);
	623	priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
4271e08d	624	&priv->main_thread, "btmrvl_main_service");
132ff4e5 BZ	625
	626	priv->btmrvl_dev.hcidev = hdev;
	627	priv->btmrvl_dev.card = card;
	628
	629	hdev->driver_data = priv;
	630
	631	priv->btmrvl_dev.tx_dnld_rdy = true;
	632
	633	hdev->type = HCI_SDIO;
	634	hdev->open = btmrvl_open;
	635	hdev->close = btmrvl_close;
	636	hdev->flush = btmrvl_flush;
	637	hdev->send = btmrvl_send_frame;
	638	hdev->destruct = btmrvl_destruct;
	639	hdev->ioctl = btmrvl_ioctl;
	640	hdev->owner = THIS_MODULE;
	641
	642	ret = hci_register_dev(hdev);
	643	if (ret < 0) {
	644	BT_ERR("Can not register HCI device");
	645	goto err_hci_register_dev;
	646	}
	647
fb784f05 BZ	648	#ifdef CONFIG_DEBUG_FS
	649	btmrvl_debugfs_init(hdev);
	650	#endif
	651
132ff4e5 BZ	652	BT_DBG("Leave");
	653	return priv;
	654
	655	err_hci_register_dev:
	656	/* Stop the thread servicing the interrupts */
	657	kthread_stop(priv->main_thread.task);
	658
	659	hci_free_dev(hdev);
	660
	661	err_hdev:
	662	btmrvl_free_adapter(priv);
	663
	664	err_adapter:
	665	kfree(priv);
	666
	667	err_priv:
	668	BT_DBG("Leave");
	669
	670	return NULL;
	671	}
	672	EXPORT_SYMBOL_GPL(btmrvl_add_card);
	673
	674	int btmrvl_remove_card(struct btmrvl_private *priv)
	675	{
	676	struct hci_dev *hdev;
	677
	678	BT_DBG("Enter");
	679
	680	hdev = priv->btmrvl_dev.hcidev;
	681
	682	wake_up_interruptible(&priv->adapter->cmd_wait_q);
	683
	684	kthread_stop(priv->main_thread.task);
	685
fb784f05 BZ	686	#ifdef CONFIG_DEBUG_FS
	687	btmrvl_debugfs_remove(hdev);
	688	#endif
	689
132ff4e5 BZ	690	hci_unregister_dev(hdev);
	691
	692	hci_free_dev(hdev);
	693
	694	priv->btmrvl_dev.hcidev = NULL;
	695
	696	btmrvl_free_adapter(priv);
	697
	698	kfree(priv);
	699
	700	BT_DBG("Leave");
	701
	702	return 0;
	703	}
	704	EXPORT_SYMBOL_GPL(btmrvl_remove_card);
	705
	706	MODULE_AUTHOR("Marvell International Ltd.");
9666fb35	707	MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
132ff4e5 BZ	708	MODULE_VERSION(VERSION);
132ff4e5 BZ	709	MODULE_LICENSE("GPL v2");