[net-next-2.6.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)
{
	priv->adapter->ps_state = PS_AWAKE;

	priv->adapter->wakeup_tries = 0;

	priv->adapter->int_count++;

	wake_up_interruptible(&priv->main_thread.wait_q);
}
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;

	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);
		}
	}
}
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;
	int ret = 0;

	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] == MODULE_BROUGHT_UP) ||
				(event->data[2] == MODULE_ALREADY_UP)) ?
				"Bring-up succeed" : "Bring-up failed");
		} 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);

	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;
	int ret = 0;

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

	cmd = (struct btmrvl_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");

	return ret;
}
EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);

int btmrvl_enable_ps(struct btmrvl_private *priv)
{
	struct sk_buff *skb;
	struct btmrvl_cmd *cmd;

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

	cmd = (struct btmrvl_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]);

	return 0;
}
EXPORT_SYMBOL_GPL(btmrvl_enable_ps);

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

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

	cmd = (struct btmrvl_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);
	}

	return ret;
}

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

	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");
			return -ENOMEM;
		}

		cmd = (struct btmrvl_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;
		btmrvl_enable_ps(priv);
	}

	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;
		}
	}

	return ret;
}

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

	if (!skb || !skb->data)
		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);
		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;
			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);

	return ret;
}

static void btmrvl_init_adapter(struct btmrvl_private *priv)
{
	skb_queue_head_init(&priv->adapter->tx_queue);

	priv->adapter->ps_state = PS_AWAKE;

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

static void btmrvl_free_adapter(struct btmrvl_private *priv)
{
	skb_queue_purge(&priv->adapter->tx_queue);

	kfree(priv->adapter);

	priv->adapter = NULL;
}

static int btmrvl_ioctl(struct hci_dev *hdev,
				unsigned int cmd, unsigned long arg)
{
	return -ENOIOCTLCMD;
}

static void btmrvl_destruct(struct hci_dev *hdev)
{
}

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

	if (!hdev || !hdev->driver_data) {
		BT_ERR("Frame for unknown HCI device");
		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);
		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);

	return 0;
}

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

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

	return 0;
}

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

	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
		return 0;

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

	return 0;
}

static int btmrvl_open(struct hci_dev *hdev)
{
	set_bit(HCI_RUNNING, &hdev->flags);

	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;

	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);
		}
	}

	return 0;
}

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

	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->bus = 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

	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:
	return NULL;
}
EXPORT_SYMBOL_GPL(btmrvl_add_card);

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

	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);

	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	{
132ff4e5 BZ	35	priv->adapter->ps_state = PS_AWAKE;
	36
	37	priv->adapter->wakeup_tries = 0;
	38
	39	priv->adapter->int_count++;
	40
	41	wake_up_interruptible(&priv->main_thread.wait_q);
132ff4e5 BZ	42	}
	43	EXPORT_SYMBOL_GPL(btmrvl_interrupt);
	44
	45	void btmrvl_check_evtpkt(struct btmrvl_private priv, struct sk_buff skb)
	46	{
4271e08d	47	struct hci_event_hdr hdr = (void ) skb->data;
132ff4e5 BZ	48	struct hci_ev_cmd_complete *ec;
	49	u16 opcode, ocf;
	50
132ff4e5	51	if (hdr->evt == HCI_EV_CMD_COMPLETE) {
4271e08d	52	ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
132ff4e5 BZ	53	opcode = __le16_to_cpu(ec->opcode);
132ff4e5 BZ	54	ocf = hci_opcode_ocf(opcode);
4271e08d MH	55	if (ocf == BT_CMD_MODULE_CFG_REQ &&
4271e08d MH	56	priv->btmrvl_dev.sendcmdflag) {
132ff4e5 BZ	57	priv->btmrvl_dev.sendcmdflag = false;
	58	priv->adapter->cmd_complete = true;
	59	wake_up_interruptible(&priv->adapter->cmd_wait_q);
	60	}
	61	}
132ff4e5 BZ	62	}
	63	EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);
	64
	65	int btmrvl_process_event(struct btmrvl_private priv, struct sk_buff skb)
	66	{
	67	struct btmrvl_adapter *adapter = priv->adapter;
132ff4e5	68	struct btmrvl_event *event;
31f085fe	69	int ret = 0;
132ff4e5	70
132ff4e5 BZ	71	event = (struct btmrvl_event *) skb->data;
	72	if (event->ec != 0xff) {
	73	BT_DBG("Not Marvell Event=%x", event->ec);
	74	ret = -EINVAL;
	75	goto exit;
	76	}
	77
	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)
	82	adapter->psmode = 1;
	83	else
	84	adapter->psmode = 0;
	85	BT_DBG("PS Mode:%s",
	86	(adapter->psmode) ? "Enable" : "Disable");
	87	} else {
	88	BT_DBG("PS Mode command failed");
	89	}
	90	break;
	91
	92	case BT_CMD_HOST_SLEEP_CONFIG:
	93	if (!event->data[3])
	94	BT_DBG("gpio=%x, gap=%x", event->data[1],
4271e08d	95	event->data[2]);
132ff4e5 BZ	96	else
	97	BT_DBG("HSCFG command failed");
	98	break;
	99
	100	case BT_CMD_HOST_SLEEP_ENABLE:
	101	if (!event->data[1]) {
	102	adapter->hs_state = HS_ACTIVATED;
	103	if (adapter->psmode)
	104	adapter->ps_state = PS_SLEEP;
	105	wake_up_interruptible(&adapter->cmd_wait_q);
	106	BT_DBG("HS ACTIVATED!");
	107	} else {
	108	BT_DBG("HS Enable failed");
	109	}
	110	break;
	111
	112	case BT_CMD_MODULE_CFG_REQ:
4271e08d MH	113	if (priv->btmrvl_dev.sendcmdflag &&
4271e08d MH	114	event->data[1] == MODULE_BRINGUP_REQ) {
903c8437 BZ	115	BT_DBG("EVENT:%s",
	116	((event->data[2] == MODULE_BROUGHT_UP) \|\|
	117	(event->data[2] == MODULE_ALREADY_UP)) ?
	118	"Bring-up succeed" : "Bring-up failed");
4271e08d MH	119	} else if (priv->btmrvl_dev.sendcmdflag &&
4271e08d MH	120	event->data[1] == MODULE_SHUTDOWN_REQ) {
132ff4e5 BZ	121	BT_DBG("EVENT:%s", (event->data[2]) ?
	122	"Shutdown failed" : "Shutdown succeed");
	123	} else {
	124	BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
	125	ret = -EINVAL;
	126	}
	127	break;
	128
	129	case BT_EVENT_POWER_STATE:
	130	if (event->data[1] == BT_PS_SLEEP)
	131	adapter->ps_state = PS_SLEEP;
	132	BT_DBG("EVENT:%s",
	133	(adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
	134	break;
	135
	136	default:
	137	BT_DBG("Unknown Event=%d", event->data[0]);
	138	ret = -EINVAL;
	139	break;
	140	}
	141
	142	exit:
	143	if (!ret)
	144	kfree_skb(skb);
	145
132ff4e5 BZ	146	return ret;
	147	}
	148	EXPORT_SYMBOL_GPL(btmrvl_process_event);
	149
	150	int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
	151	{
4271e08d	152	struct sk_buff *skb;
132ff4e5	153	struct btmrvl_cmd *cmd;
9374253f	154	int ret = 0;
132ff4e5 BZ	155
	156	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	157	if (skb == NULL) {
	158	BT_ERR("No free skb");
9374253f	159	return -ENOMEM;
132ff4e5 BZ	160	}
132ff4e5 BZ	161
e0721f99	162	cmd = (struct btmrvl_cmd ) skb_put(skb, sizeof(cmd));
91d69730	163	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_MODULE_CFG_REQ));
132ff4e5 BZ	164	cmd->length = 1;
	165	cmd->data[0] = subcmd;
	166
	167	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
	168
4271e08d	169	skb->dev = (void *) priv->btmrvl_dev.hcidev;
132ff4e5 BZ	170	skb_queue_head(&priv->adapter->tx_queue, skb);
	171
	172	priv->btmrvl_dev.sendcmdflag = true;
	173
	174	priv->adapter->cmd_complete = false;
	175
	176	BT_DBG("Queue module cfg Command");
	177
	178	wake_up_interruptible(&priv->main_thread.wait_q);
	179
4271e08d MH	180	if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
	181	priv->adapter->cmd_complete,
	182	msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) {
132ff4e5 BZ	183	ret = -ETIMEDOUT;
132ff4e5 BZ	184	BT_ERR("module_cfg_cmd(%x): timeout: %d",
4271e08d	185	subcmd, priv->btmrvl_dev.sendcmdflag);
132ff4e5 BZ	186	}
	187
	188	BT_DBG("module cfg Command done");
	189
132ff4e5 BZ	190	return ret;
	191	}
	192	EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
	193
32fd6398 AK	194	int btmrvl_enable_ps(struct btmrvl_private *priv)
	195	{
	196	struct sk_buff *skb;
	197	struct btmrvl_cmd *cmd;
	198
	199	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	200	if (skb == NULL) {
	201	BT_ERR("No free skb");
	202	return -ENOMEM;
	203	}
	204
	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));
	208	cmd->length = 1;
	209
	210	if (priv->btmrvl_dev.psmode)
	211	cmd->data[0] = BT_PS_ENABLE;
	212	else
	213	cmd->data[0] = BT_PS_DISABLE;
	214
	215	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
	216
	217	skb->dev = (void *) priv->btmrvl_dev.hcidev;
	218	skb_queue_head(&priv->adapter->tx_queue, skb);
	219
	220	BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);
	221
	222	return 0;
	223	}
	224	EXPORT_SYMBOL_GPL(btmrvl_enable_ps);
	225
132ff4e5 BZ	226	static int btmrvl_enable_hs(struct btmrvl_private *priv)
132ff4e5 BZ	227	{
4271e08d	228	struct sk_buff *skb;
132ff4e5	229	struct btmrvl_cmd *cmd;
9374253f	230	int ret = 0;
132ff4e5 BZ	231
	232	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	233	if (skb == NULL) {
	234	BT_ERR("No free skb");
9374253f	235	return -ENOMEM;
132ff4e5 BZ	236	}
132ff4e5 BZ	237
e0721f99	238	cmd = (struct btmrvl_cmd ) skb_put(skb, sizeof(cmd));
91d69730	239	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_ENABLE));
132ff4e5 BZ	240	cmd->length = 0;
	241
	242	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
	243
4271e08d	244	skb->dev = (void *) priv->btmrvl_dev.hcidev;
132ff4e5 BZ	245	skb_queue_head(&priv->adapter->tx_queue, skb);
	246
	247	BT_DBG("Queue hs enable Command");
	248
	249	wake_up_interruptible(&priv->main_thread.wait_q);
	250
4271e08d	251	if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
132ff4e5 BZ	252	priv->adapter->hs_state,
	253	msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
	254	ret = -ETIMEDOUT;
4271e08d MH	255	BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
	256	priv->adapter->ps_state,
	257	priv->adapter->wakeup_tries);
132ff4e5 BZ	258	}
132ff4e5 BZ	259
132ff4e5 BZ	260	return ret;
	261	}
	262
	263	int btmrvl_prepare_command(struct btmrvl_private *priv)
	264	{
	265	struct sk_buff *skb = NULL;
132ff4e5	266	struct btmrvl_cmd *cmd;
9374253f	267	int ret = 0;
132ff4e5 BZ	268
	269	if (priv->btmrvl_dev.hscfgcmd) {
	270	priv->btmrvl_dev.hscfgcmd = 0;
	271
	272	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	273	if (skb == NULL) {
	274	BT_ERR("No free skb");
9374253f	275	return -ENOMEM;
132ff4e5 BZ	276	}
132ff4e5 BZ	277
e0721f99	278	cmd = (struct btmrvl_cmd ) skb_put(skb, sizeof(cmd));
91d69730	279	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_CONFIG));
132ff4e5 BZ	280	cmd->length = 2;
	281	cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
	282	cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
	283
	284	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
	285
4271e08d	286	skb->dev = (void *) priv->btmrvl_dev.hcidev;
132ff4e5 BZ	287	skb_queue_head(&priv->adapter->tx_queue, skb);
	288
	289	BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x",
4271e08d	290	cmd->data[0], cmd->data[1]);
132ff4e5 BZ	291	}
	292
	293	if (priv->btmrvl_dev.pscmd) {
	294	priv->btmrvl_dev.pscmd = 0;
32fd6398	295	btmrvl_enable_ps(priv);
132ff4e5 BZ	296	}
	297
	298	if (priv->btmrvl_dev.hscmd) {
	299	priv->btmrvl_dev.hscmd = 0;
	300
	301	if (priv->btmrvl_dev.hsmode) {
	302	ret = btmrvl_enable_hs(priv);
	303	} else {
	304	ret = priv->hw_wakeup_firmware(priv);
	305	priv->adapter->hs_state = HS_DEACTIVATED;
	306	}
	307	}
	308
132ff4e5 BZ	309	return ret;
	310	}
	311
	312	static int btmrvl_tx_pkt(struct btmrvl_private priv, struct sk_buff skb)
	313	{
9374253f	314	int ret = 0;
132ff4e5	315
9374253f	316	if (!skb \|\| !skb->data)
132ff4e5	317	return -EINVAL;
132ff4e5 BZ	318
	319	if (!skb->len \|\| ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
	320	BT_ERR("Tx Error: Bad skb length %d : %d",
4271e08d	321	skb->len, BTM_UPLD_SIZE);
132ff4e5 BZ	322	return -EINVAL;
	323	}
	324
	325	if (skb_headroom(skb) < BTM_HEADER_LEN) {
	326	struct sk_buff *tmp = skb;
	327
	328	skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
	329	if (!skb) {
	330	BT_ERR("Tx Error: realloc_headroom failed %d",
	331	BTM_HEADER_LEN);
	332	skb = tmp;
132ff4e5 BZ	333	return -EINVAL;
	334	}
	335
	336	kfree_skb(tmp);
	337	}
	338
	339	skb_push(skb, BTM_HEADER_LEN);
	340
	341	/* header type: byte[3]
	342	* HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
	343	* header length: byte[2][1][0]
	344	*/
	345
	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;
	350
	351	if (priv->hw_host_to_card)
	352	ret = priv->hw_host_to_card(priv, skb->data, skb->len);
	353
132ff4e5 BZ	354	return ret;
	355	}
	356
	357	static void btmrvl_init_adapter(struct btmrvl_private *priv)
	358	{
132ff4e5 BZ	359	skb_queue_head_init(&priv->adapter->tx_queue);
	360
	361	priv->adapter->ps_state = PS_AWAKE;
	362
	363	init_waitqueue_head(&priv->adapter->cmd_wait_q);
132ff4e5 BZ	364	}
	365
	366	static void btmrvl_free_adapter(struct btmrvl_private *priv)
	367	{
132ff4e5 BZ	368	skb_queue_purge(&priv->adapter->tx_queue);
	369
	370	kfree(priv->adapter);
	371
	372	priv->adapter = NULL;
132ff4e5 BZ	373	}
132ff4e5 BZ	374
4271e08d MH	375	static int btmrvl_ioctl(struct hci_dev *hdev,
4271e08d MH	376	unsigned int cmd, unsigned long arg)
132ff4e5	377	{
132ff4e5 BZ	378	return -ENOIOCTLCMD;
	379	}
	380
	381	static void btmrvl_destruct(struct hci_dev *hdev)
	382	{
132ff4e5 BZ	383	}
	384
	385	static int btmrvl_send_frame(struct sk_buff *skb)
	386	{
4271e08d	387	struct hci_dev hdev = (struct hci_dev ) skb->dev;
132ff4e5 BZ	388	struct btmrvl_private *priv = NULL;
132ff4e5 BZ	389
9374253f	390	BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
132ff4e5 BZ	391
	392	if (!hdev \|\| !hdev->driver_data) {
	393	BT_ERR("Frame for unknown HCI device");
132ff4e5 BZ	394	return -ENODEV;
	395	}
	396
4271e08d	397	priv = (struct btmrvl_private *) hdev->driver_data;
132ff4e5 BZ	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,
4271e08d	401	skb->data, skb->len);
132ff4e5 BZ	402	return -EBUSY;
	403	}
	404
	405	switch (bt_cb(skb)->pkt_type) {
	406	case HCI_COMMAND_PKT:
	407	hdev->stat.cmd_tx++;
	408	break;
	409
	410	case HCI_ACLDATA_PKT:
	411	hdev->stat.acl_tx++;
	412	break;
	413
	414	case HCI_SCODATA_PKT:
	415	hdev->stat.sco_tx++;
	416	break;
	417	}
	418
	419	skb_queue_tail(&priv->adapter->tx_queue, skb);
	420
	421	wake_up_interruptible(&priv->main_thread.wait_q);
	422
132ff4e5 BZ	423	return 0;
	424	}
	425
	426	static int btmrvl_flush(struct hci_dev *hdev)
	427	{
4271e08d	428	struct btmrvl_private *priv = hdev->driver_data;
132ff4e5	429
132ff4e5 BZ	430	skb_queue_purge(&priv->adapter->tx_queue);
132ff4e5 BZ	431
132ff4e5 BZ	432	return 0;
	433	}
	434
	435	static int btmrvl_close(struct hci_dev *hdev)
	436	{
4271e08d	437	struct btmrvl_private *priv = hdev->driver_data;
132ff4e5	438
9374253f	439	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
132ff4e5	440	return 0;
132ff4e5 BZ	441
	442	skb_queue_purge(&priv->adapter->tx_queue);
	443
132ff4e5 BZ	444	return 0;
	445	}
	446
	447	static int btmrvl_open(struct hci_dev *hdev)
	448	{
132ff4e5 BZ	449	set_bit(HCI_RUNNING, &hdev->flags);
132ff4e5 BZ	450
132ff4e5 BZ	451	return 0;
	452	}
	453
	454	/*
	455	* This function handles the event generated by firmware, rx data
	456	* received from firmware, and tx data sent from kernel.
	457	*/
	458	static int btmrvl_service_main_thread(void *data)
	459	{
	460	struct btmrvl_thread *thread = data;
	461	struct btmrvl_private *priv = thread->priv;
	462	struct btmrvl_adapter *adapter = priv->adapter;
	463	wait_queue_t wait;
	464	struct sk_buff *skb;
	465	ulong flags;
	466
132ff4e5 BZ	467	init_waitqueue_entry(&wait, current);
	468
	469	current->flags \|= PF_NOFREEZE;
	470
	471	for (;;) {
	472	add_wait_queue(&thread->wait_q, &wait);
	473
	474	set_current_state(TASK_INTERRUPTIBLE);
	475
	476	if (adapter->wakeup_tries \|\|
4271e08d MH	477	((!adapter->int_count) &&
	478	(!priv->btmrvl_dev.tx_dnld_rdy \|\|
	479	skb_queue_empty(&adapter->tx_queue)))) {
132ff4e5 BZ	480	BT_DBG("main_thread is sleeping...");
	481	schedule();
	482	}
	483
	484	set_current_state(TASK_RUNNING);
	485
	486	remove_wait_queue(&thread->wait_q, &wait);
	487
	488	BT_DBG("main_thread woke up");
	489
	490	if (kthread_should_stop()) {
	491	BT_DBG("main_thread: break from main thread");
	492	break;
	493	}
	494
	495	spin_lock_irqsave(&priv->driver_lock, flags);
	496	if (adapter->int_count) {
	497	adapter->int_count = 0;
4271e08d MH	498	} else if (adapter->ps_state == PS_SLEEP &&
4271e08d MH	499	!skb_queue_empty(&adapter->tx_queue)) {
132ff4e5 BZ	500	spin_unlock_irqrestore(&priv->driver_lock, flags);
	501	adapter->wakeup_tries++;
	502	priv->hw_wakeup_firmware(priv);
	503	continue;
	504	}
	505	spin_unlock_irqrestore(&priv->driver_lock, flags);
	506
	507	if (adapter->ps_state == PS_SLEEP)
	508	continue;
	509
	510	if (!priv->btmrvl_dev.tx_dnld_rdy)
	511	continue;
	512
	513	skb = skb_dequeue(&adapter->tx_queue);
	514	if (skb) {
	515	if (btmrvl_tx_pkt(priv, skb))
	516	priv->btmrvl_dev.hcidev->stat.err_tx++;
	517	else
4271e08d	518	priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
132ff4e5 BZ	519
	520	kfree_skb(skb);
	521	}
	522	}
	523
132ff4e5 BZ	524	return 0;
	525	}
	526
	527	struct btmrvl_private btmrvl_add_card(void card)
	528	{
	529	struct hci_dev *hdev = NULL;
4271e08d	530	struct btmrvl_private *priv;
132ff4e5 BZ	531	int ret;
132ff4e5 BZ	532
132ff4e5 BZ	533	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	534	if (!priv) {
	535	BT_ERR("Can not allocate priv");
	536	goto err_priv;
	537	}
	538
	539	priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
	540	if (!priv->adapter) {
	541	BT_ERR("Allocate buffer for btmrvl_adapter failed!");
	542	goto err_adapter;
	543	}
	544
	545	btmrvl_init_adapter(priv);
	546
	547	hdev = hci_alloc_dev();
	548	if (!hdev) {
	549	BT_ERR("Can not allocate HCI device");
	550	goto err_hdev;
	551	}
	552
	553	BT_DBG("Starting kthread...");
	554	priv->main_thread.priv = priv;
	555	spin_lock_init(&priv->driver_lock);
	556
	557	init_waitqueue_head(&priv->main_thread.wait_q);
	558	priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
4271e08d	559	&priv->main_thread, "btmrvl_main_service");
132ff4e5 BZ	560
	561	priv->btmrvl_dev.hcidev = hdev;
	562	priv->btmrvl_dev.card = card;
	563
	564	hdev->driver_data = priv;
	565
	566	priv->btmrvl_dev.tx_dnld_rdy = true;
	567
c13854ce	568	hdev->bus = HCI_SDIO;
132ff4e5 BZ	569	hdev->open = btmrvl_open;
	570	hdev->close = btmrvl_close;
	571	hdev->flush = btmrvl_flush;
	572	hdev->send = btmrvl_send_frame;
	573	hdev->destruct = btmrvl_destruct;
	574	hdev->ioctl = btmrvl_ioctl;
	575	hdev->owner = THIS_MODULE;
	576
	577	ret = hci_register_dev(hdev);
	578	if (ret < 0) {
	579	BT_ERR("Can not register HCI device");
	580	goto err_hci_register_dev;
	581	}
	582
fb784f05 BZ	583	#ifdef CONFIG_DEBUG_FS
	584	btmrvl_debugfs_init(hdev);
	585	#endif
	586
132ff4e5 BZ	587	return priv;
	588
	589	err_hci_register_dev:
	590	/* Stop the thread servicing the interrupts */
	591	kthread_stop(priv->main_thread.task);
	592
	593	hci_free_dev(hdev);
	594
	595	err_hdev:
	596	btmrvl_free_adapter(priv);
	597
	598	err_adapter:
	599	kfree(priv);
	600
	601	err_priv:
132ff4e5 BZ	602	return NULL;
	603	}
	604	EXPORT_SYMBOL_GPL(btmrvl_add_card);
	605
	606	int btmrvl_remove_card(struct btmrvl_private *priv)
	607	{
	608	struct hci_dev *hdev;
	609
132ff4e5 BZ	610	hdev = priv->btmrvl_dev.hcidev;
	611
	612	wake_up_interruptible(&priv->adapter->cmd_wait_q);
	613
	614	kthread_stop(priv->main_thread.task);
	615
fb784f05 BZ	616	#ifdef CONFIG_DEBUG_FS
	617	btmrvl_debugfs_remove(hdev);
	618	#endif
	619
132ff4e5 BZ	620	hci_unregister_dev(hdev);
	621
	622	hci_free_dev(hdev);
	623
	624	priv->btmrvl_dev.hcidev = NULL;
	625
	626	btmrvl_free_adapter(priv);
	627
	628	kfree(priv);
	629
132ff4e5 BZ	630	return 0;
	631	}
	632	EXPORT_SYMBOL_GPL(btmrvl_remove_card);
	633
	634	MODULE_AUTHOR("Marvell International Ltd.");
9666fb35	635	MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
132ff4e5 BZ	636	MODULE_VERSION(VERSION);
132ff4e5 BZ	637	MODULE_LICENSE("GPL v2");