[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)
{
	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;
	u8 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]) ?
				"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);

	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);

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;

		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]);
	}

	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->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

	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;
4271e08d	69	u8 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) {
132ff4e5 BZ	115	BT_DBG("EVENT:%s", (event->data[2]) ?
132ff4e5 BZ	116	"Bring-up failed" : "Bring-up succeed");
4271e08d MH	117	} else if (priv->btmrvl_dev.sendcmdflag &&
4271e08d MH	118	event->data[1] == MODULE_SHUTDOWN_REQ) {
132ff4e5 BZ	119	BT_DBG("EVENT:%s", (event->data[2]) ?
	120	"Shutdown failed" : "Shutdown succeed");
	121	} else {
	122	BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
	123	ret = -EINVAL;
	124	}
	125	break;
	126
	127	case BT_EVENT_POWER_STATE:
	128	if (event->data[1] == BT_PS_SLEEP)
	129	adapter->ps_state = PS_SLEEP;
	130	BT_DBG("EVENT:%s",
	131	(adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
	132	break;
	133
	134	default:
	135	BT_DBG("Unknown Event=%d", event->data[0]);
	136	ret = -EINVAL;
	137	break;
	138	}
	139
	140	exit:
	141	if (!ret)
	142	kfree_skb(skb);
	143
132ff4e5 BZ	144	return ret;
	145	}
	146	EXPORT_SYMBOL_GPL(btmrvl_process_event);
	147
	148	int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
	149	{
4271e08d	150	struct sk_buff *skb;
132ff4e5	151	struct btmrvl_cmd *cmd;
9374253f	152	int ret = 0;
132ff4e5 BZ	153
	154	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	155	if (skb == NULL) {
	156	BT_ERR("No free skb");
9374253f	157	return -ENOMEM;
132ff4e5 BZ	158	}
132ff4e5 BZ	159
e0721f99	160	cmd = (struct btmrvl_cmd ) skb_put(skb, sizeof(cmd));
91d69730	161	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_MODULE_CFG_REQ));
132ff4e5 BZ	162	cmd->length = 1;
	163	cmd->data[0] = subcmd;
	164
	165	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
	166
4271e08d	167	skb->dev = (void *) priv->btmrvl_dev.hcidev;
132ff4e5 BZ	168	skb_queue_head(&priv->adapter->tx_queue, skb);
	169
	170	priv->btmrvl_dev.sendcmdflag = true;
	171
	172	priv->adapter->cmd_complete = false;
	173
	174	BT_DBG("Queue module cfg Command");
	175
	176	wake_up_interruptible(&priv->main_thread.wait_q);
	177
4271e08d MH	178	if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
	179	priv->adapter->cmd_complete,
	180	msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) {
132ff4e5 BZ	181	ret = -ETIMEDOUT;
132ff4e5 BZ	182	BT_ERR("module_cfg_cmd(%x): timeout: %d",
4271e08d	183	subcmd, priv->btmrvl_dev.sendcmdflag);
132ff4e5 BZ	184	}
	185
	186	BT_DBG("module cfg Command done");
	187
132ff4e5 BZ	188	return ret;
	189	}
	190	EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);
	191
	192	static int btmrvl_enable_hs(struct btmrvl_private *priv)
	193	{
4271e08d	194	struct sk_buff *skb;
132ff4e5	195	struct btmrvl_cmd *cmd;
9374253f	196	int ret = 0;
132ff4e5 BZ	197
	198	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	199	if (skb == NULL) {
	200	BT_ERR("No free skb");
9374253f	201	return -ENOMEM;
132ff4e5 BZ	202	}
132ff4e5 BZ	203
e0721f99	204	cmd = (struct btmrvl_cmd ) skb_put(skb, sizeof(cmd));
91d69730	205	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_ENABLE));
132ff4e5 BZ	206	cmd->length = 0;
	207
	208	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
	209
4271e08d	210	skb->dev = (void *) priv->btmrvl_dev.hcidev;
132ff4e5 BZ	211	skb_queue_head(&priv->adapter->tx_queue, skb);
	212
	213	BT_DBG("Queue hs enable Command");
	214
	215	wake_up_interruptible(&priv->main_thread.wait_q);
	216
4271e08d	217	if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
132ff4e5 BZ	218	priv->adapter->hs_state,
	219	msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
	220	ret = -ETIMEDOUT;
4271e08d MH	221	BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
	222	priv->adapter->ps_state,
	223	priv->adapter->wakeup_tries);
132ff4e5 BZ	224	}
132ff4e5 BZ	225
132ff4e5 BZ	226	return ret;
	227	}
	228
	229	int btmrvl_prepare_command(struct btmrvl_private *priv)
	230	{
	231	struct sk_buff *skb = NULL;
132ff4e5	232	struct btmrvl_cmd *cmd;
9374253f	233	int ret = 0;
132ff4e5 BZ	234
	235	if (priv->btmrvl_dev.hscfgcmd) {
	236	priv->btmrvl_dev.hscfgcmd = 0;
	237
	238	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	239	if (skb == NULL) {
	240	BT_ERR("No free skb");
9374253f	241	return -ENOMEM;
132ff4e5 BZ	242	}
132ff4e5 BZ	243
e0721f99	244	cmd = (struct btmrvl_cmd ) skb_put(skb, sizeof(cmd));
91d69730	245	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_CONFIG));
132ff4e5 BZ	246	cmd->length = 2;
	247	cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
	248	cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);
	249
	250	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;
	251
4271e08d	252	skb->dev = (void *) priv->btmrvl_dev.hcidev;
132ff4e5 BZ	253	skb_queue_head(&priv->adapter->tx_queue, skb);
	254
	255	BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x",
4271e08d	256	cmd->data[0], cmd->data[1]);
132ff4e5 BZ	257	}
	258
	259	if (priv->btmrvl_dev.pscmd) {
	260	priv->btmrvl_dev.pscmd = 0;
	261
	262	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	263	if (skb == NULL) {
	264	BT_ERR("No free skb");
9374253f	265	return -ENOMEM;
132ff4e5 BZ	266	}
132ff4e5 BZ	267
e0721f99	268	cmd = (struct btmrvl_cmd ) skb_put(skb, sizeof(cmd));
91d69730	269	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_AUTO_SLEEP_MODE));
132ff4e5 BZ	270	cmd->length = 1;
	271
	272	if (priv->btmrvl_dev.psmode)
	273	cmd->data[0] = BT_PS_ENABLE;
	274	else
	275	cmd->data[0] = BT_PS_DISABLE;
	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 PSMODE Command:%d", cmd->data[0]);
	283	}
	284
	285	if (priv->btmrvl_dev.hscmd) {
	286	priv->btmrvl_dev.hscmd = 0;
	287
	288	if (priv->btmrvl_dev.hsmode) {
	289	ret = btmrvl_enable_hs(priv);
	290	} else {
	291	ret = priv->hw_wakeup_firmware(priv);
	292	priv->adapter->hs_state = HS_DEACTIVATED;
	293	}
	294	}
	295
132ff4e5 BZ	296	return ret;
	297	}
	298
	299	static int btmrvl_tx_pkt(struct btmrvl_private priv, struct sk_buff skb)
	300	{
9374253f	301	int ret = 0;
132ff4e5	302
9374253f	303	if (!skb \|\| !skb->data)
132ff4e5	304	return -EINVAL;
132ff4e5 BZ	305
	306	if (!skb->len \|\| ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
	307	BT_ERR("Tx Error: Bad skb length %d : %d",
4271e08d	308	skb->len, BTM_UPLD_SIZE);
132ff4e5 BZ	309	return -EINVAL;
	310	}
	311
	312	if (skb_headroom(skb) < BTM_HEADER_LEN) {
	313	struct sk_buff *tmp = skb;
	314
	315	skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
	316	if (!skb) {
	317	BT_ERR("Tx Error: realloc_headroom failed %d",
	318	BTM_HEADER_LEN);
	319	skb = tmp;
132ff4e5 BZ	320	return -EINVAL;
	321	}
	322
	323	kfree_skb(tmp);
	324	}
	325
	326	skb_push(skb, BTM_HEADER_LEN);
	327
	328	/* header type: byte[3]
	329	* HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
	330	* header length: byte[2][1][0]
	331	*/
	332
	333	skb->data[0] = (skb->len & 0x0000ff);
	334	skb->data[1] = (skb->len & 0x00ff00) >> 8;
	335	skb->data[2] = (skb->len & 0xff0000) >> 16;
	336	skb->data[3] = bt_cb(skb)->pkt_type;
	337
	338	if (priv->hw_host_to_card)
	339	ret = priv->hw_host_to_card(priv, skb->data, skb->len);
	340
132ff4e5 BZ	341	return ret;
	342	}
	343
	344	static void btmrvl_init_adapter(struct btmrvl_private *priv)
	345	{
132ff4e5 BZ	346	skb_queue_head_init(&priv->adapter->tx_queue);
	347
	348	priv->adapter->ps_state = PS_AWAKE;
	349
	350	init_waitqueue_head(&priv->adapter->cmd_wait_q);
132ff4e5 BZ	351	}
	352
	353	static void btmrvl_free_adapter(struct btmrvl_private *priv)
	354	{
132ff4e5 BZ	355	skb_queue_purge(&priv->adapter->tx_queue);
	356
	357	kfree(priv->adapter);
	358
	359	priv->adapter = NULL;
132ff4e5 BZ	360	}
132ff4e5 BZ	361
4271e08d MH	362	static int btmrvl_ioctl(struct hci_dev *hdev,
4271e08d MH	363	unsigned int cmd, unsigned long arg)
132ff4e5	364	{
132ff4e5 BZ	365	return -ENOIOCTLCMD;
	366	}
	367
	368	static void btmrvl_destruct(struct hci_dev *hdev)
	369	{
132ff4e5 BZ	370	}
	371
	372	static int btmrvl_send_frame(struct sk_buff *skb)
	373	{
4271e08d	374	struct hci_dev hdev = (struct hci_dev ) skb->dev;
132ff4e5 BZ	375	struct btmrvl_private *priv = NULL;
132ff4e5 BZ	376
9374253f	377	BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
132ff4e5 BZ	378
	379	if (!hdev \|\| !hdev->driver_data) {
	380	BT_ERR("Frame for unknown HCI device");
132ff4e5 BZ	381	return -ENODEV;
	382	}
	383
4271e08d	384	priv = (struct btmrvl_private *) hdev->driver_data;
132ff4e5 BZ	385	if (!test_bit(HCI_RUNNING, &hdev->flags)) {
	386	BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
	387	print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
4271e08d	388	skb->data, skb->len);
132ff4e5 BZ	389	return -EBUSY;
	390	}
	391
	392	switch (bt_cb(skb)->pkt_type) {
	393	case HCI_COMMAND_PKT:
	394	hdev->stat.cmd_tx++;
	395	break;
	396
	397	case HCI_ACLDATA_PKT:
	398	hdev->stat.acl_tx++;
	399	break;
	400
	401	case HCI_SCODATA_PKT:
	402	hdev->stat.sco_tx++;
	403	break;
	404	}
	405
	406	skb_queue_tail(&priv->adapter->tx_queue, skb);
	407
	408	wake_up_interruptible(&priv->main_thread.wait_q);
	409
132ff4e5 BZ	410	return 0;
	411	}
	412
	413	static int btmrvl_flush(struct hci_dev *hdev)
	414	{
4271e08d	415	struct btmrvl_private *priv = hdev->driver_data;
132ff4e5	416
132ff4e5 BZ	417	skb_queue_purge(&priv->adapter->tx_queue);
132ff4e5 BZ	418
132ff4e5 BZ	419	return 0;
	420	}
	421
	422	static int btmrvl_close(struct hci_dev *hdev)
	423	{
4271e08d	424	struct btmrvl_private *priv = hdev->driver_data;
132ff4e5	425
9374253f	426	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
132ff4e5	427	return 0;
132ff4e5 BZ	428
	429	skb_queue_purge(&priv->adapter->tx_queue);
	430
132ff4e5 BZ	431	return 0;
	432	}
	433
	434	static int btmrvl_open(struct hci_dev *hdev)
	435	{
132ff4e5 BZ	436	set_bit(HCI_RUNNING, &hdev->flags);
132ff4e5 BZ	437
132ff4e5 BZ	438	return 0;
	439	}
	440
	441	/*
	442	* This function handles the event generated by firmware, rx data
	443	* received from firmware, and tx data sent from kernel.
	444	*/
	445	static int btmrvl_service_main_thread(void *data)
	446	{
	447	struct btmrvl_thread *thread = data;
	448	struct btmrvl_private *priv = thread->priv;
	449	struct btmrvl_adapter *adapter = priv->adapter;
	450	wait_queue_t wait;
	451	struct sk_buff *skb;
	452	ulong flags;
	453
132ff4e5 BZ	454	init_waitqueue_entry(&wait, current);
	455
	456	current->flags \|= PF_NOFREEZE;
	457
	458	for (;;) {
	459	add_wait_queue(&thread->wait_q, &wait);
	460
	461	set_current_state(TASK_INTERRUPTIBLE);
	462
	463	if (adapter->wakeup_tries \|\|
4271e08d MH	464	((!adapter->int_count) &&
	465	(!priv->btmrvl_dev.tx_dnld_rdy \|\|
	466	skb_queue_empty(&adapter->tx_queue)))) {
132ff4e5 BZ	467	BT_DBG("main_thread is sleeping...");
	468	schedule();
	469	}
	470
	471	set_current_state(TASK_RUNNING);
	472
	473	remove_wait_queue(&thread->wait_q, &wait);
	474
	475	BT_DBG("main_thread woke up");
	476
	477	if (kthread_should_stop()) {
	478	BT_DBG("main_thread: break from main thread");
	479	break;
	480	}
	481
	482	spin_lock_irqsave(&priv->driver_lock, flags);
	483	if (adapter->int_count) {
	484	adapter->int_count = 0;
4271e08d MH	485	} else if (adapter->ps_state == PS_SLEEP &&
4271e08d MH	486	!skb_queue_empty(&adapter->tx_queue)) {
132ff4e5 BZ	487	spin_unlock_irqrestore(&priv->driver_lock, flags);
	488	adapter->wakeup_tries++;
	489	priv->hw_wakeup_firmware(priv);
	490	continue;
	491	}
	492	spin_unlock_irqrestore(&priv->driver_lock, flags);
	493
	494	if (adapter->ps_state == PS_SLEEP)
	495	continue;
	496
	497	if (!priv->btmrvl_dev.tx_dnld_rdy)
	498	continue;
	499
	500	skb = skb_dequeue(&adapter->tx_queue);
	501	if (skb) {
	502	if (btmrvl_tx_pkt(priv, skb))
	503	priv->btmrvl_dev.hcidev->stat.err_tx++;
	504	else
4271e08d	505	priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
132ff4e5 BZ	506
	507	kfree_skb(skb);
	508	}
	509	}
	510
132ff4e5 BZ	511	return 0;
	512	}
	513
	514	struct btmrvl_private btmrvl_add_card(void card)
	515	{
	516	struct hci_dev *hdev = NULL;
4271e08d	517	struct btmrvl_private *priv;
132ff4e5 BZ	518	int ret;
132ff4e5 BZ	519
132ff4e5 BZ	520	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	521	if (!priv) {
	522	BT_ERR("Can not allocate priv");
	523	goto err_priv;
	524	}
	525
	526	priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
	527	if (!priv->adapter) {
	528	BT_ERR("Allocate buffer for btmrvl_adapter failed!");
	529	goto err_adapter;
	530	}
	531
	532	btmrvl_init_adapter(priv);
	533
	534	hdev = hci_alloc_dev();
	535	if (!hdev) {
	536	BT_ERR("Can not allocate HCI device");
	537	goto err_hdev;
	538	}
	539
	540	BT_DBG("Starting kthread...");
	541	priv->main_thread.priv = priv;
	542	spin_lock_init(&priv->driver_lock);
	543
	544	init_waitqueue_head(&priv->main_thread.wait_q);
	545	priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
4271e08d	546	&priv->main_thread, "btmrvl_main_service");
132ff4e5 BZ	547
	548	priv->btmrvl_dev.hcidev = hdev;
	549	priv->btmrvl_dev.card = card;
	550
	551	hdev->driver_data = priv;
	552
	553	priv->btmrvl_dev.tx_dnld_rdy = true;
	554
	555	hdev->type = HCI_SDIO;
	556	hdev->open = btmrvl_open;
	557	hdev->close = btmrvl_close;
	558	hdev->flush = btmrvl_flush;
	559	hdev->send = btmrvl_send_frame;
	560	hdev->destruct = btmrvl_destruct;
	561	hdev->ioctl = btmrvl_ioctl;
	562	hdev->owner = THIS_MODULE;
	563
	564	ret = hci_register_dev(hdev);
	565	if (ret < 0) {
	566	BT_ERR("Can not register HCI device");
	567	goto err_hci_register_dev;
	568	}
	569
fb784f05 BZ	570	#ifdef CONFIG_DEBUG_FS
	571	btmrvl_debugfs_init(hdev);
	572	#endif
	573
132ff4e5 BZ	574	return priv;
	575
	576	err_hci_register_dev:
	577	/* Stop the thread servicing the interrupts */
	578	kthread_stop(priv->main_thread.task);
	579
	580	hci_free_dev(hdev);
	581
	582	err_hdev:
	583	btmrvl_free_adapter(priv);
	584
	585	err_adapter:
	586	kfree(priv);
	587
	588	err_priv:
132ff4e5 BZ	589	return NULL;
	590	}
	591	EXPORT_SYMBOL_GPL(btmrvl_add_card);
	592
	593	int btmrvl_remove_card(struct btmrvl_private *priv)
	594	{
	595	struct hci_dev *hdev;
	596
132ff4e5 BZ	597	hdev = priv->btmrvl_dev.hcidev;
	598
	599	wake_up_interruptible(&priv->adapter->cmd_wait_q);
	600
	601	kthread_stop(priv->main_thread.task);
	602
fb784f05 BZ	603	#ifdef CONFIG_DEBUG_FS
	604	btmrvl_debugfs_remove(hdev);
	605	#endif
	606
132ff4e5 BZ	607	hci_unregister_dev(hdev);
	608
	609	hci_free_dev(hdev);
	610
	611	priv->btmrvl_dev.hcidev = NULL;
	612
	613	btmrvl_free_adapter(priv);
	614
	615	kfree(priv);
	616
132ff4e5 BZ	617	return 0;
	618	}
	619	EXPORT_SYMBOL_GPL(btmrvl_remove_card);
	620
	621	MODULE_AUTHOR("Marvell International Ltd.");
9666fb35	622	MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
132ff4e5 BZ	623	MODULE_VERSION(VERSION);
132ff4e5 BZ	624	MODULE_LICENSE("GPL v2");