[mirror_ubuntu-jammy-kernel.git] / drivers / memstick / host / tifm_ms.c

/*
 *  TI FlashMedia driver
 *
 *  Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Special thanks to Carlos Corbacho for providing various MemoryStick cards
 * that made this driver possible.
 *
 */

#include <linux/tifm.h>
#include <linux/memstick.h>
#include <linux/highmem.h>
#include <linux/scatterlist.h>
#include <linux/log2.h>
#include <asm/io.h>

#define DRIVER_NAME "tifm_ms"

static int no_dma;
module_param(no_dma, bool, 0644);

/*
 * Some control bits of TIFM appear to conform to Sony's reference design,
 * so I'm just assuming they all are.
 */

#define TIFM_MS_STAT_DRQ     0x04000
#define TIFM_MS_STAT_MSINT   0x02000
#define TIFM_MS_STAT_RDY     0x01000
#define TIFM_MS_STAT_CRC     0x00200
#define TIFM_MS_STAT_TOE     0x00100
#define TIFM_MS_STAT_EMP     0x00020
#define TIFM_MS_STAT_FUL     0x00010
#define TIFM_MS_STAT_CED     0x00008
#define TIFM_MS_STAT_ERR     0x00004
#define TIFM_MS_STAT_BRQ     0x00002
#define TIFM_MS_STAT_CNK     0x00001

#define TIFM_MS_SYS_DMA      0x10000
#define TIFM_MS_SYS_RESET    0x08000
#define TIFM_MS_SYS_SRAC     0x04000
#define TIFM_MS_SYS_INTEN    0x02000
#define TIFM_MS_SYS_NOCRC    0x01000
#define TIFM_MS_SYS_INTCLR   0x00800
#define TIFM_MS_SYS_MSIEN    0x00400
#define TIFM_MS_SYS_FCLR     0x00200
#define TIFM_MS_SYS_FDIR     0x00100
#define TIFM_MS_SYS_DAM      0x00080
#define TIFM_MS_SYS_DRM      0x00040
#define TIFM_MS_SYS_DRQSL    0x00020
#define TIFM_MS_SYS_REI      0x00010
#define TIFM_MS_SYS_REO      0x00008
#define TIFM_MS_SYS_BSY_MASK 0x00007

#define TIFM_MS_SYS_FIFO     (TIFM_MS_SYS_INTEN | TIFM_MS_SYS_MSIEN \
			      | TIFM_MS_SYS_FCLR | TIFM_MS_SYS_BSY_MASK)

/* Hardware flags */
enum {
	CMD_READY  = 0x01,
	FIFO_READY = 0x02,
	CARD_INT   = 0x04
};

struct tifm_ms {
	struct tifm_dev         *dev;
	struct timer_list       timer;
	struct memstick_request *req;
	unsigned int            mode_mask;
	unsigned int            block_pos;
	unsigned long           timeout_jiffies;
	unsigned char           eject:1,
				use_dma:1;
	unsigned char           cmd_flags;
	unsigned char           io_pos;
	unsigned int            io_word;
};

static unsigned int tifm_ms_read_data(struct tifm_ms *host,
				      unsigned char *buf, unsigned int length)
{
	struct tifm_dev *sock = host->dev;
	unsigned int off = 0;

	while (host->io_pos && length) {
		buf[off++] = host->io_word & 0xff;
		host->io_word >>= 8;
		length--;
		host->io_pos--;
	}

	if (!length)
		return off;

	while (!(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
		if (length < 4)
			break;
		*(unsigned int *)(buf + off) = __raw_readl(sock->addr
							   + SOCK_MS_DATA);
		length -= 4;
		off += 4;
	}

	if (length
	    && !(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
		host->io_word = readl(sock->addr + SOCK_MS_DATA);
		for (host->io_pos = 4; host->io_pos; --host->io_pos) {
			buf[off++] = host->io_word & 0xff;
			host->io_word >>= 8;
			length--;
			if (!length)
				break;
		}
	}

	return off;
}

static unsigned int tifm_ms_write_data(struct tifm_ms *host,
				       unsigned char *buf, unsigned int length)
{
	struct tifm_dev *sock = host->dev;
	unsigned int off = 0;

	if (host->io_pos) {
		while (host->io_pos < 4 && length) {
			host->io_word |=  buf[off++] << (host->io_pos * 8);
			host->io_pos++;
			length--;
		}
	}

	if (host->io_pos == 4
	    && !(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
		writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM),
		       sock->addr + SOCK_MS_SYSTEM);
		writel(host->io_word, sock->addr + SOCK_MS_DATA);
		host->io_pos = 0;
		host->io_word = 0;
	} else if (host->io_pos) {
		return off;
	}

	if (!length)
		return off;

	while (!(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
		if (length < 4)
			break;
		writel(TIFM_MS_SYS_FDIR | readl(sock->addr + SOCK_MS_SYSTEM),
		       sock->addr + SOCK_MS_SYSTEM);
		__raw_writel(*(unsigned int *)(buf + off),
			     sock->addr + SOCK_MS_DATA);
		length -= 4;
		off += 4;
	}

	switch (length) {
	case 3:
		host->io_word |= buf[off + 2] << 16;
		host->io_pos++;
	case 2:
		host->io_word |= buf[off + 1] << 8;
		host->io_pos++;
	case 1:
		host->io_word |= buf[off];
		host->io_pos++;
	}

	off += host->io_pos;

	return off;
}

static unsigned int tifm_ms_transfer_data(struct tifm_ms *host)
{
	struct tifm_dev *sock = host->dev;
	unsigned int length;
	unsigned int off;
	unsigned int t_size, p_cnt;
	unsigned char *buf;
	struct page *pg;
	unsigned long flags = 0;

	if (host->req->long_data) {
		length = host->req->sg.length - host->block_pos;
		off = host->req->sg.offset + host->block_pos;
	} else {
		length = host->req->data_len - host->block_pos;
		off = 0;
	}
	dev_dbg(&sock->dev, "fifo data transfer, %d, %d\n", length,
		host->block_pos);

	while (length) {
		unsigned int uninitialized_var(p_off);

		if (host->req->long_data) {
			pg = nth_page(sg_page(&host->req->sg),
				      off >> PAGE_SHIFT);
			p_off = offset_in_page(off);
			p_cnt = PAGE_SIZE - p_off;
			p_cnt = min(p_cnt, length);

			local_irq_save(flags);
			buf = kmap_atomic(pg, KM_BIO_SRC_IRQ) + p_off;
		} else {
			buf = host->req->data + host->block_pos;
			p_cnt = host->req->data_len - host->block_pos;
		}

		t_size = host->req->data_dir == WRITE
			 ? tifm_ms_write_data(host, buf, p_cnt)
			 : tifm_ms_read_data(host, buf, p_cnt);

		if (host->req->long_data) {
			kunmap_atomic(buf - p_off, KM_BIO_SRC_IRQ);
			local_irq_restore(flags);
		}

		if (!t_size)
			break;
		host->block_pos += t_size;
		length -= t_size;
		off += t_size;
	}

	dev_dbg(&sock->dev, "fifo data transfer, %d remaining\n", length);
	if (!length && (host->req->data_dir == WRITE)) {
		if (host->io_pos) {
			writel(TIFM_MS_SYS_FDIR
			       | readl(sock->addr + SOCK_MS_SYSTEM),
			       sock->addr + SOCK_MS_SYSTEM);
			writel(host->io_word, sock->addr + SOCK_MS_DATA);
		}
		writel(TIFM_MS_SYS_FDIR
		       | readl(sock->addr + SOCK_MS_SYSTEM),
		       sock->addr + SOCK_MS_SYSTEM);
		writel(0, sock->addr + SOCK_MS_DATA);
	} else {
		readl(sock->addr + SOCK_MS_DATA);
	}

	return length;
}

static int tifm_ms_issue_cmd(struct tifm_ms *host)
{
	struct tifm_dev *sock = host->dev;
	unsigned char *data;
	unsigned int data_len, cmd, sys_param;

	host->cmd_flags = 0;
	host->block_pos = 0;
	host->io_pos = 0;
	host->io_word = 0;
	host->cmd_flags = 0;

	data = host->req->data;

	host->use_dma = !no_dma;

	if (host->req->long_data) {
		data_len = host->req->sg.length;
		if (!is_power_of_2(data_len))
			host->use_dma = 0;
	} else {
		data_len = host->req->data_len;
		host->use_dma = 0;
	}

	writel(TIFM_FIFO_INT_SETALL,
	       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
	writel(TIFM_FIFO_ENABLE,
	       sock->addr + SOCK_FIFO_CONTROL);

	if (host->use_dma) {
		if (1 != tifm_map_sg(sock, &host->req->sg, 1,
				     host->req->data_dir == READ
				     ? PCI_DMA_FROMDEVICE
				     : PCI_DMA_TODEVICE)) {
			host->req->error = -ENOMEM;
			return host->req->error;
		}
		data_len = sg_dma_len(&host->req->sg);

		writel(ilog2(data_len) - 2,
		       sock->addr + SOCK_FIFO_PAGE_SIZE);
		writel(TIFM_FIFO_INTMASK,
		       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
		sys_param = TIFM_DMA_EN | (1 << 8);
		if (host->req->data_dir == WRITE)
			sys_param |= TIFM_DMA_TX;

		writel(TIFM_FIFO_INTMASK,
		       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);

		writel(sg_dma_address(&host->req->sg),
		       sock->addr + SOCK_DMA_ADDRESS);
		writel(sys_param, sock->addr + SOCK_DMA_CONTROL);
	} else {
		writel(host->mode_mask | TIFM_MS_SYS_FIFO,
		       sock->addr + SOCK_MS_SYSTEM);

		writel(TIFM_FIFO_MORE,
		       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
	}

	mod_timer(&host->timer, jiffies + host->timeout_jiffies);
	writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL),
	       sock->addr + SOCK_CONTROL);
	host->req->error = 0;

	sys_param = readl(sock->addr + SOCK_MS_SYSTEM);
	sys_param |= TIFM_MS_SYS_INTCLR;

	if (host->use_dma)
		sys_param |= TIFM_MS_SYS_DMA;
	else
		sys_param &= ~TIFM_MS_SYS_DMA;

	writel(sys_param, sock->addr + SOCK_MS_SYSTEM);

	cmd = (host->req->tpc & 0xf) << 12;
	cmd |= data_len;
	writel(cmd, sock->addr + SOCK_MS_COMMAND);

	dev_dbg(&sock->dev, "executing TPC %x, %x\n", cmd, sys_param);
	return 0;
}

static void tifm_ms_complete_cmd(struct tifm_ms *host)
{
	struct tifm_dev *sock = host->dev;
	struct memstick_host *msh = tifm_get_drvdata(sock);
	int rc;

	del_timer(&host->timer);

	host->req->int_reg = readl(sock->addr + SOCK_MS_STATUS) & 0xff;
	host->req->int_reg = (host->req->int_reg & 1)
			     | ((host->req->int_reg << 4) & 0xe0);

	writel(TIFM_FIFO_INT_SETALL,
	       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
	writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);

	if (host->use_dma) {
		tifm_unmap_sg(sock, &host->req->sg, 1,
			      host->req->data_dir == READ
			      ? PCI_DMA_FROMDEVICE
			      : PCI_DMA_TODEVICE);
	}

	writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
	       sock->addr + SOCK_CONTROL);

	dev_dbg(&sock->dev, "TPC complete\n");
	do {
		rc = memstick_next_req(msh, &host->req);
	} while (!rc && tifm_ms_issue_cmd(host));
}

static int tifm_ms_check_status(struct tifm_ms *host)
{
	if (!host->req->error) {
		if (!(host->cmd_flags & CMD_READY))
			return 1;
		if (!(host->cmd_flags & FIFO_READY))
			return 1;
		if (host->req->need_card_int
		    && !(host->cmd_flags & CARD_INT))
			return 1;
	}
	return 0;
}

/* Called from interrupt handler */
static void tifm_ms_data_event(struct tifm_dev *sock)
{
	struct tifm_ms *host;
	unsigned int fifo_status = 0, host_status = 0;
	int rc = 1;

	spin_lock(&sock->lock);
	host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
	fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
	host_status = readl(sock->addr + SOCK_MS_STATUS);
	dev_dbg(&sock->dev,
		"data event: fifo_status %x, host_status %x, flags %x\n",
		fifo_status, host_status, host->cmd_flags);

	if (host->req) {
		if (host->use_dma && (fifo_status & 1)) {
			host->cmd_flags |= FIFO_READY;
			rc = tifm_ms_check_status(host);
		}
		if (!host->use_dma && (fifo_status & TIFM_FIFO_MORE)) {
			if (!tifm_ms_transfer_data(host)) {
				host->cmd_flags |= FIFO_READY;
				rc = tifm_ms_check_status(host);
			}
		}
	}

	writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
	if (!rc)
		tifm_ms_complete_cmd(host);

	spin_unlock(&sock->lock);
}


/* Called from interrupt handler */
static void tifm_ms_card_event(struct tifm_dev *sock)
{
	struct tifm_ms *host;
	unsigned int host_status = 0;
	int rc = 1;

	spin_lock(&sock->lock);
	host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
	host_status = readl(sock->addr + SOCK_MS_STATUS);
	dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n",
		host_status, host->cmd_flags);

	if (host->req) {
		if (host_status & TIFM_MS_STAT_TOE)
			host->req->error = -ETIME;
		else if (host_status & TIFM_MS_STAT_CRC)
			host->req->error = -EILSEQ;

		if (host_status & TIFM_MS_STAT_RDY)
			host->cmd_flags |= CMD_READY;

		if (host_status & TIFM_MS_STAT_MSINT)
			host->cmd_flags |= CARD_INT;

		rc = tifm_ms_check_status(host);

	}

	writel(TIFM_MS_SYS_INTCLR | readl(sock->addr + SOCK_MS_SYSTEM),
	       sock->addr + SOCK_MS_SYSTEM);

	if (!rc)
		tifm_ms_complete_cmd(host);

	spin_unlock(&sock->lock);
	return;
}

static void tifm_ms_request(struct memstick_host *msh)
{
	struct tifm_ms *host = memstick_priv(msh);
	struct tifm_dev *sock = host->dev;
	unsigned long flags;
	int rc;

	spin_lock_irqsave(&sock->lock, flags);
	if (host->req) {
		printk(KERN_ERR "%s : unfinished request detected\n",
		       sock->dev.bus_id);
		spin_unlock_irqrestore(&sock->lock, flags);
		tifm_eject(host->dev);
		return;
	}

	if (host->eject) {
		do {
			rc = memstick_next_req(msh, &host->req);
			if (!rc)
				host->req->error = -ETIME;
		} while (!rc);
		spin_unlock_irqrestore(&sock->lock, flags);
		return;
	}

	do {
		rc = memstick_next_req(msh, &host->req);
	} while (!rc && tifm_ms_issue_cmd(host));

	spin_unlock_irqrestore(&sock->lock, flags);
	return;
}

static int tifm_ms_set_param(struct memstick_host *msh,
			     enum memstick_param param,
			     int value)
{
	struct tifm_ms *host = memstick_priv(msh);
	struct tifm_dev *sock = host->dev;

	switch (param) {
	case MEMSTICK_POWER:
		/* also affected by media detection mechanism */
		if (value == MEMSTICK_POWER_ON) {
			host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI;
			writel(TIFM_MS_SYS_RESET, sock->addr + SOCK_MS_SYSTEM);
			writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
			       sock->addr + SOCK_MS_SYSTEM);
			writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
		} else if (value == MEMSTICK_POWER_OFF) {
			writel(TIFM_MS_SYS_FCLR | TIFM_MS_SYS_INTCLR,
			       sock->addr + SOCK_MS_SYSTEM);
			writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
		} else
			return -EINVAL;
		break;
	case MEMSTICK_INTERFACE:
		if (value == MEMSTICK_SERIAL) {
			host->mode_mask = TIFM_MS_SYS_SRAC | TIFM_MS_SYS_REI;
			writel((~TIFM_CTRL_FAST_CLK)
			       & readl(sock->addr + SOCK_CONTROL),
			       sock->addr + SOCK_CONTROL);
		} else if (value == MEMSTICK_PAR4) {
			host->mode_mask = 0;
			writel(TIFM_CTRL_FAST_CLK
			       | readl(sock->addr + SOCK_CONTROL),
			       sock->addr + SOCK_CONTROL);
		} else
			return -EINVAL;
		break;
	};

	return 0;
}

static void tifm_ms_abort(unsigned long data)
{
	struct tifm_ms *host = (struct tifm_ms *)data;

	dev_dbg(&host->dev->dev, "status %x\n",
		readl(host->dev->addr + SOCK_MS_STATUS));
	printk(KERN_ERR
	       "%s : card failed to respond for a long period of time "
	       "(%x, %x)\n",
	       host->dev->dev.bus_id, host->req ? host->req->tpc : 0,
	       host->cmd_flags);

	tifm_eject(host->dev);
}

static int tifm_ms_probe(struct tifm_dev *sock)
{
	struct memstick_host *msh;
	struct tifm_ms *host;
	int rc = -EIO;

	if (!(TIFM_SOCK_STATE_OCCUPIED
	      & readl(sock->addr + SOCK_PRESENT_STATE))) {
		printk(KERN_WARNING "%s : card gone, unexpectedly\n",
		       sock->dev.bus_id);
		return rc;
	}

	msh = memstick_alloc_host(sizeof(struct tifm_ms), &sock->dev);
	if (!msh)
		return -ENOMEM;

	host = memstick_priv(msh);
	tifm_set_drvdata(sock, msh);
	host->dev = sock;
	host->timeout_jiffies = msecs_to_jiffies(1000);

	setup_timer(&host->timer, tifm_ms_abort, (unsigned long)host);

	msh->request = tifm_ms_request;
	msh->set_param = tifm_ms_set_param;
	sock->card_event = tifm_ms_card_event;
	sock->data_event = tifm_ms_data_event;
	if (tifm_has_ms_pif(sock))
		msh->caps |= MEMSTICK_CAP_PAR4;

	rc = memstick_add_host(msh);
	if (!rc)
		return 0;

	memstick_free_host(msh);
	return rc;
}

static void tifm_ms_remove(struct tifm_dev *sock)
{
	struct memstick_host *msh = tifm_get_drvdata(sock);
	struct tifm_ms *host = memstick_priv(msh);
	int rc = 0;
	unsigned long flags;

	spin_lock_irqsave(&sock->lock, flags);
	host->eject = 1;
	if (host->req) {
		del_timer(&host->timer);
		writel(TIFM_FIFO_INT_SETALL,
		       sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
		writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
		if (host->use_dma)
			tifm_unmap_sg(sock, &host->req->sg, 1,
				      host->req->data_dir == READ
				      ? PCI_DMA_TODEVICE
				      : PCI_DMA_FROMDEVICE);
		host->req->error = -ETIME;

		do {
			rc = memstick_next_req(msh, &host->req);
			if (!rc)
				host->req->error = -ETIME;
		} while (!rc);
	}
	spin_unlock_irqrestore(&sock->lock, flags);

	memstick_remove_host(msh);
	memstick_free_host(msh);
}

#ifdef CONFIG_PM

static int tifm_ms_suspend(struct tifm_dev *sock, pm_message_t state)
{
	struct memstick_host *msh = tifm_get_drvdata(sock);

	memstick_suspend_host(msh);
	return 0;
}

static int tifm_ms_resume(struct tifm_dev *sock)
{
	struct memstick_host *msh = tifm_get_drvdata(sock);

	memstick_resume_host(msh);
	return 0;
}

#else

#define tifm_ms_suspend NULL
#define tifm_ms_resume NULL

#endif /* CONFIG_PM */

static struct tifm_device_id tifm_ms_id_tbl[] = {
	{ TIFM_TYPE_MS }, { 0 }
};

static struct tifm_driver tifm_ms_driver = {
	.driver = {
		.name  = DRIVER_NAME,
		.owner = THIS_MODULE
	},
	.id_table = tifm_ms_id_tbl,
	.probe    = tifm_ms_probe,
	.remove   = tifm_ms_remove,
	.suspend  = tifm_ms_suspend,
	.resume   = tifm_ms_resume
};

static int __init tifm_ms_init(void)
{
	return tifm_register_driver(&tifm_ms_driver);
}

static void __exit tifm_ms_exit(void)
{
	tifm_unregister_driver(&tifm_ms_driver);
}

MODULE_AUTHOR("Alex Dubov");
MODULE_DESCRIPTION("TI FlashMedia MemoryStick driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(tifm, tifm_ms_id_tbl);

module_init(tifm_ms_init);
module_exit(tifm_ms_exit);
Commit	Line	Data
baf8532a AD	1	/*
	2	* TI FlashMedia driver
	3	*
	4	* Copyright (C) 2007 Alex Dubov <oakad@yahoo.com>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*
	10	* Special thanks to Carlos Corbacho for providing various MemoryStick cards
	11	* that made this driver possible.
	12	*
	13	*/
	14
	15	#include <linux/tifm.h>
	16	#include <linux/memstick.h>
	17	#include <linux/highmem.h>
	18	#include <linux/scatterlist.h>
	19	#include <linux/log2.h>
	20	#include <asm/io.h>
	21
	22	#define DRIVER_NAME "tifm_ms"
baf8532a AD	23
	24	static int no_dma;
	25	module_param(no_dma, bool, 0644);
	26
92b22d93 AD	27	/*
	28	* Some control bits of TIFM appear to conform to Sony's reference design,
	29	* so I'm just assuming they all are.
	30	*/
baf8532a	31
92b22d93 AD	32	#define TIFM_MS_STAT_DRQ 0x04000
	33	#define TIFM_MS_STAT_MSINT 0x02000
	34	#define TIFM_MS_STAT_RDY 0x01000
	35	#define TIFM_MS_STAT_CRC 0x00200
	36	#define TIFM_MS_STAT_TOE 0x00100
	37	#define TIFM_MS_STAT_EMP 0x00020
	38	#define TIFM_MS_STAT_FUL 0x00010
	39	#define TIFM_MS_STAT_CED 0x00008
	40	#define TIFM_MS_STAT_ERR 0x00004
	41	#define TIFM_MS_STAT_BRQ 0x00002
	42	#define TIFM_MS_STAT_CNK 0x00001
	43
	44	#define TIFM_MS_SYS_DMA 0x10000
	45	#define TIFM_MS_SYS_RESET 0x08000
	46	#define TIFM_MS_SYS_SRAC 0x04000
	47	#define TIFM_MS_SYS_INTEN 0x02000
	48	#define TIFM_MS_SYS_NOCRC 0x01000
	49	#define TIFM_MS_SYS_INTCLR 0x00800
	50	#define TIFM_MS_SYS_MSIEN 0x00400
	51	#define TIFM_MS_SYS_FCLR 0x00200
	52	#define TIFM_MS_SYS_FDIR 0x00100
	53	#define TIFM_MS_SYS_DAM 0x00080
	54	#define TIFM_MS_SYS_DRM 0x00040
	55	#define TIFM_MS_SYS_DRQSL 0x00020
	56	#define TIFM_MS_SYS_REI 0x00010
	57	#define TIFM_MS_SYS_REO 0x00008
	58	#define TIFM_MS_SYS_BSY_MASK 0x00007
	59
	60	#define TIFM_MS_SYS_FIFO (TIFM_MS_SYS_INTEN \| TIFM_MS_SYS_MSIEN \
	61	\| TIFM_MS_SYS_FCLR \| TIFM_MS_SYS_BSY_MASK)
baf8532a AD	62
	63	/* Hardware flags */
	64	enum {
92b22d93 AD	65	CMD_READY = 0x01,
	66	FIFO_READY = 0x02,
	67	CARD_INT = 0x04
baf8532a AD	68	};
	69
	70	struct tifm_ms {
	71	struct tifm_dev *dev;
92b22d93 AD	72	struct timer_list timer;
92b22d93 AD	73	struct memstick_request *req;
baf8532a AD	74	unsigned int mode_mask;
	75	unsigned int block_pos;
	76	unsigned long timeout_jiffies;
92b22d93 AD	77	unsigned char eject:1,
	78	use_dma:1;
	79	unsigned char cmd_flags;
	80	unsigned char io_pos;
baf8532a AD	81	unsigned int io_word;
	82	};
	83
92b22d93 AD	84	static unsigned int tifm_ms_read_data(struct tifm_ms *host,
92b22d93 AD	85	unsigned char *buf, unsigned int length)
baf8532a AD	86	{
baf8532a AD	87	struct tifm_dev *sock = host->dev;
92b22d93 AD	88	unsigned int off = 0;
	89
	90	while (host->io_pos && length) {
	91	buf[off++] = host->io_word & 0xff;
	92	host->io_word >>= 8;
	93	length--;
	94	host->io_pos--;
	95	}
	96
	97	if (!length)
	98	return off;
	99
	100	while (!(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
	101	if (length < 4)
	102	break;
	103	(unsigned int )(buf + off) = __raw_readl(sock->addr
	104	+ SOCK_MS_DATA);
	105	length -= 4;
	106	off += 4;
	107	}
baf8532a	108
92b22d93 AD	109	if (length
	110	&& !(TIFM_MS_STAT_EMP & readl(sock->addr + SOCK_MS_STATUS))) {
	111	host->io_word = readl(sock->addr + SOCK_MS_DATA);
	112	for (host->io_pos = 4; host->io_pos; --host->io_pos) {
baf8532a AD	113	buf[off++] = host->io_word & 0xff;
	114	host->io_word >>= 8;
	115	length--;
92b22d93 AD	116	if (!length)
92b22d93 AD	117	break;
baf8532a	118	}
baf8532a AD	119	}
baf8532a AD	120
92b22d93	121	return off;
baf8532a AD	122	}
baf8532a AD	123
92b22d93 AD	124	static unsigned int tifm_ms_write_data(struct tifm_ms *host,
92b22d93 AD	125	unsigned char *buf, unsigned int length)
baf8532a AD	126	{
baf8532a AD	127	struct tifm_dev *sock = host->dev;
92b22d93	128	unsigned int off = 0;
baf8532a	129
92b22d93 AD	130	if (host->io_pos) {
	131	while (host->io_pos < 4 && length) {
	132	host->io_word \|= buf[off++] << (host->io_pos * 8);
	133	host->io_pos++;
baf8532a	134	length--;
baf8532a	135	}
baf8532a AD	136	}
baf8532a AD	137
92b22d93 AD	138	if (host->io_pos == 4
	139	&& !(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
	140	writel(TIFM_MS_SYS_FDIR \| readl(sock->addr + SOCK_MS_SYSTEM),
	141	sock->addr + SOCK_MS_SYSTEM);
	142	writel(host->io_word, sock->addr + SOCK_MS_DATA);
	143	host->io_pos = 0;
baf8532a	144	host->io_word = 0;
92b22d93 AD	145	} else if (host->io_pos) {
	146	return off;
	147	}
baf8532a	148
92b22d93 AD	149	if (!length)
92b22d93 AD	150	return off;
baf8532a	151
92b22d93 AD	152	while (!(TIFM_MS_STAT_FUL & readl(sock->addr + SOCK_MS_STATUS))) {
	153	if (length < 4)
	154	break;
	155	writel(TIFM_MS_SYS_FDIR \| readl(sock->addr + SOCK_MS_SYSTEM),
	156	sock->addr + SOCK_MS_SYSTEM);
	157	__raw_writel((unsigned int )(buf + off),
	158	sock->addr + SOCK_MS_DATA);
	159	length -= 4;
	160	off += 4;
	161	}
baf8532a	162
92b22d93 AD	163	switch (length) {
	164	case 3:
	165	host->io_word \|= buf[off + 2] << 16;
	166	host->io_pos++;
	167	case 2:
	168	host->io_word \|= buf[off + 1] << 8;
	169	host->io_pos++;
	170	case 1:
	171	host->io_word \|= buf[off];
	172	host->io_pos++;
	173	}
baf8532a	174
92b22d93	175	off += host->io_pos;
baf8532a	176
92b22d93	177	return off;
baf8532a AD	178	}
baf8532a AD	179
92b22d93	180	static unsigned int tifm_ms_transfer_data(struct tifm_ms *host)
baf8532a AD	181	{
baf8532a AD	182	struct tifm_dev *sock = host->dev;
92b22d93 AD	183	unsigned int length;
92b22d93 AD	184	unsigned int off;
d250dad6	185	unsigned int t_size, p_cnt;
92b22d93 AD	186	unsigned char *buf;
	187	struct page *pg;
	188	unsigned long flags = 0;
baf8532a	189
92b22d93 AD	190	if (host->req->long_data) {
	191	length = host->req->sg.length - host->block_pos;
	192	off = host->req->sg.offset + host->block_pos;
	193	} else {
	194	length = host->req->data_len - host->block_pos;
	195	off = 0;
	196	}
	197	dev_dbg(&sock->dev, "fifo data transfer, %d, %d\n", length,
	198	host->block_pos);
	199
	200	while (length) {
d250dad6 AM	201	unsigned int uninitialized_var(p_off);
d250dad6 AM	202
92b22d93 AD	203	if (host->req->long_data) {
	204	pg = nth_page(sg_page(&host->req->sg),
	205	off >> PAGE_SHIFT);
	206	p_off = offset_in_page(off);
	207	p_cnt = PAGE_SIZE - p_off;
	208	p_cnt = min(p_cnt, length);
	209
	210	local_irq_save(flags);
	211	buf = kmap_atomic(pg, KM_BIO_SRC_IRQ) + p_off;
	212	} else {
	213	buf = host->req->data + host->block_pos;
	214	p_cnt = host->req->data_len - host->block_pos;
	215	}
baf8532a	216
92b22d93 AD	217	t_size = host->req->data_dir == WRITE
	218	? tifm_ms_write_data(host, buf, p_cnt)
	219	: tifm_ms_read_data(host, buf, p_cnt);
baf8532a	220
92b22d93 AD	221	if (host->req->long_data) {
	222	kunmap_atomic(buf - p_off, KM_BIO_SRC_IRQ);
	223	local_irq_restore(flags);
	224	}
baf8532a	225
92b22d93 AD	226	if (!t_size)
	227	break;
	228	host->block_pos += t_size;
	229	length -= t_size;
	230	off += t_size;
	231	}
baf8532a	232
92b22d93 AD	233	dev_dbg(&sock->dev, "fifo data transfer, %d remaining\n", length);
	234	if (!length && (host->req->data_dir == WRITE)) {
	235	if (host->io_pos) {
	236	writel(TIFM_MS_SYS_FDIR
	237	\| readl(sock->addr + SOCK_MS_SYSTEM),
	238	sock->addr + SOCK_MS_SYSTEM);
	239	writel(host->io_word, sock->addr + SOCK_MS_DATA);
	240	}
	241	writel(TIFM_MS_SYS_FDIR
	242	\| readl(sock->addr + SOCK_MS_SYSTEM),
	243	sock->addr + SOCK_MS_SYSTEM);
	244	writel(0, sock->addr + SOCK_MS_DATA);
	245	} else {
	246	readl(sock->addr + SOCK_MS_DATA);
	247	}
baf8532a	248
92b22d93	249	return length;
baf8532a AD	250	}
	251
	252	static int tifm_ms_issue_cmd(struct tifm_ms *host)
	253	{
	254	struct tifm_dev *sock = host->dev;
	255	unsigned char *data;
92b22d93	256	unsigned int data_len, cmd, sys_param;
baf8532a	257
92b22d93 AD	258	host->cmd_flags = 0;
	259	host->block_pos = 0;
	260	host->io_pos = 0;
	261	host->io_word = 0;
baf8532a AD	262	host->cmd_flags = 0;
baf8532a AD	263
92b22d93	264	data = host->req->data;
baf8532a	265
92b22d93	266	host->use_dma = !no_dma;
baf8532a	267
92b22d93 AD	268	if (host->req->long_data) {
	269	data_len = host->req->sg.length;
	270	if (!is_power_of_2(data_len))
	271	host->use_dma = 0;
e1f19995	272	} else {
baf8532a	273	data_len = host->req->data_len;
92b22d93 AD	274	host->use_dma = 0;
92b22d93 AD	275	}
baf8532a	276
92b22d93 AD	277	writel(TIFM_FIFO_INT_SETALL,
	278	sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
	279	writel(TIFM_FIFO_ENABLE,
	280	sock->addr + SOCK_FIFO_CONTROL);
	281
	282	if (host->use_dma) {
	283	if (1 != tifm_map_sg(sock, &host->req->sg, 1,
	284	host->req->data_dir == READ
	285	? PCI_DMA_FROMDEVICE
	286	: PCI_DMA_TODEVICE)) {
	287	host->req->error = -ENOMEM;
	288	return host->req->error;
	289	}
	290	data_len = sg_dma_len(&host->req->sg);
baf8532a	291
92b22d93 AD	292	writel(ilog2(data_len) - 2,
	293	sock->addr + SOCK_FIFO_PAGE_SIZE);
	294	writel(TIFM_FIFO_INTMASK,
	295	sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
	296	sys_param = TIFM_DMA_EN \| (1 << 8);
	297	if (host->req->data_dir == WRITE)
	298	sys_param \|= TIFM_DMA_TX;
baf8532a	299
92b22d93 AD	300	writel(TIFM_FIFO_INTMASK,
92b22d93 AD	301	sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
baf8532a	302
92b22d93 AD	303	writel(sg_dma_address(&host->req->sg),
	304	sock->addr + SOCK_DMA_ADDRESS);
	305	writel(sys_param, sock->addr + SOCK_DMA_CONTROL);
	306	} else {
	307	writel(host->mode_mask \| TIFM_MS_SYS_FIFO,
	308	sock->addr + SOCK_MS_SYSTEM);
	309
	310	writel(TIFM_FIFO_MORE,
	311	sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
e1f19995	312	}
baf8532a AD	313
	314	mod_timer(&host->timer, jiffies + host->timeout_jiffies);
	315	writel(TIFM_CTRL_LED \| readl(sock->addr + SOCK_CONTROL),
	316	sock->addr + SOCK_CONTROL);
	317	host->req->error = 0;
	318
92b22d93 AD	319	sys_param = readl(sock->addr + SOCK_MS_SYSTEM);
	320	sys_param \|= TIFM_MS_SYS_INTCLR;
	321
	322	if (host->use_dma)
	323	sys_param \|= TIFM_MS_SYS_DMA;
	324	else
	325	sys_param &= ~TIFM_MS_SYS_DMA;
	326
	327	writel(sys_param, sock->addr + SOCK_MS_SYSTEM);
	328
baf8532a AD	329	cmd = (host->req->tpc & 0xf) << 12;
	330	cmd \|= data_len;
	331	writel(cmd, sock->addr + SOCK_MS_COMMAND);
	332
92b22d93	333	dev_dbg(&sock->dev, "executing TPC %x, %x\n", cmd, sys_param);
baf8532a AD	334	return 0;
	335	}
	336
	337	static void tifm_ms_complete_cmd(struct tifm_ms *host)
	338	{
	339	struct tifm_dev *sock = host->dev;
	340	struct memstick_host *msh = tifm_get_drvdata(sock);
baf8532a AD	341	int rc;
	342
	343	del_timer(&host->timer);
baf8532a	344
ead70773 AD	345	host->req->int_reg = readl(sock->addr + SOCK_MS_STATUS) & 0xff;
	346	host->req->int_reg = (host->req->int_reg & 1)
	347	\| ((host->req->int_reg << 4) & 0xe0);
	348
	349	writel(TIFM_FIFO_INT_SETALL,
	350	sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
	351	writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
	352
	353	if (host->use_dma) {
92b22d93 AD	354	tifm_unmap_sg(sock, &host->req->sg, 1,
	355	host->req->data_dir == READ
	356	? PCI_DMA_FROMDEVICE
	357	: PCI_DMA_TODEVICE);
ead70773	358	}
baf8532a AD	359
	360	writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
	361	sock->addr + SOCK_CONTROL);
	362
92b22d93	363	dev_dbg(&sock->dev, "TPC complete\n");
baf8532a AD	364	do {
	365	rc = memstick_next_req(msh, &host->req);
	366	} while (!rc && tifm_ms_issue_cmd(host));
	367	}
	368
	369	static int tifm_ms_check_status(struct tifm_ms *host)
	370	{
	371	if (!host->req->error) {
	372	if (!(host->cmd_flags & CMD_READY))
	373	return 1;
92b22d93	374	if (!(host->cmd_flags & FIFO_READY))
baf8532a AD	375	return 1;
baf8532a AD	376	if (host->req->need_card_int
92b22d93	377	&& !(host->cmd_flags & CARD_INT))
baf8532a AD	378	return 1;
	379	}
	380	return 0;
	381	}
	382
	383	/* Called from interrupt handler */
	384	static void tifm_ms_data_event(struct tifm_dev *sock)
	385	{
	386	struct tifm_ms *host;
92b22d93	387	unsigned int fifo_status = 0, host_status = 0;
baf8532a AD	388	int rc = 1;
	389
	390	spin_lock(&sock->lock);
	391	host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
	392	fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
92b22d93 AD	393	host_status = readl(sock->addr + SOCK_MS_STATUS);
	394	dev_dbg(&sock->dev,
	395	"data event: fifo_status %x, host_status %x, flags %x\n",
	396	fifo_status, host_status, host->cmd_flags);
baf8532a AD	397
baf8532a AD	398	if (host->req) {
92b22d93 AD	399	if (host->use_dma && (fifo_status & 1)) {
	400	host->cmd_flags \|= FIFO_READY;
	401	rc = tifm_ms_check_status(host);
	402	}
	403	if (!host->use_dma && (fifo_status & TIFM_FIFO_MORE)) {
	404	if (!tifm_ms_transfer_data(host)) {
baf8532a AD	405	host->cmd_flags \|= FIFO_READY;
	406	rc = tifm_ms_check_status(host);
	407	}
	408	}
	409	}
	410
	411	writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
	412	if (!rc)
	413	tifm_ms_complete_cmd(host);
	414
	415	spin_unlock(&sock->lock);
	416	}
	417
	418
	419	/* Called from interrupt handler */
	420	static void tifm_ms_card_event(struct tifm_dev *sock)
	421	{
	422	struct tifm_ms *host;
	423	unsigned int host_status = 0;
	424	int rc = 1;
	425
	426	spin_lock(&sock->lock);
	427	host = memstick_priv((struct memstick_host *)tifm_get_drvdata(sock));
	428	host_status = readl(sock->addr + SOCK_MS_STATUS);
	429	dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n",
	430	host_status, host->cmd_flags);
	431
	432	if (host->req) {
92b22d93	433	if (host_status & TIFM_MS_STAT_TOE)
baf8532a	434	host->req->error = -ETIME;
92b22d93	435	else if (host_status & TIFM_MS_STAT_CRC)
baf8532a AD	436	host->req->error = -EILSEQ;
baf8532a AD	437
92b22d93	438	if (host_status & TIFM_MS_STAT_RDY)
baf8532a	439	host->cmd_flags \|= CMD_READY;
92b22d93 AD	440
	441	if (host_status & TIFM_MS_STAT_MSINT)
	442	host->cmd_flags \|= CARD_INT;
baf8532a AD	443
	444	rc = tifm_ms_check_status(host);
	445
	446	}
	447
92b22d93	448	writel(TIFM_MS_SYS_INTCLR \| readl(sock->addr + SOCK_MS_SYSTEM),
baf8532a AD	449	sock->addr + SOCK_MS_SYSTEM);
	450
	451	if (!rc)
	452	tifm_ms_complete_cmd(host);
	453
	454	spin_unlock(&sock->lock);
	455	return;
	456	}
	457
	458	static void tifm_ms_request(struct memstick_host *msh)
	459	{
	460	struct tifm_ms *host = memstick_priv(msh);
	461	struct tifm_dev *sock = host->dev;
	462	unsigned long flags;
	463	int rc;
	464
	465	spin_lock_irqsave(&sock->lock, flags);
	466	if (host->req) {
	467	printk(KERN_ERR "%s : unfinished request detected\n",
	468	sock->dev.bus_id);
	469	spin_unlock_irqrestore(&sock->lock, flags);
	470	tifm_eject(host->dev);
	471	return;
	472	}
	473
	474	if (host->eject) {
	475	do {
	476	rc = memstick_next_req(msh, &host->req);
	477	if (!rc)
	478	host->req->error = -ETIME;
	479	} while (!rc);
	480	spin_unlock_irqrestore(&sock->lock, flags);
	481	return;
	482	}
	483
	484	do {
	485	rc = memstick_next_req(msh, &host->req);
	486	} while (!rc && tifm_ms_issue_cmd(host));
	487
	488	spin_unlock_irqrestore(&sock->lock, flags);
	489	return;
	490	}
	491
b7789998 AD	492	static int tifm_ms_set_param(struct memstick_host *msh,
	493	enum memstick_param param,
	494	int value)
baf8532a AD	495	{
	496	struct tifm_ms *host = memstick_priv(msh);
	497	struct tifm_dev *sock = host->dev;
baf8532a AD	498
	499	switch (param) {
	500	case MEMSTICK_POWER:
eebbe9ca AD	501	/* also affected by media detection mechanism */
	502	if (value == MEMSTICK_POWER_ON) {
	503	host->mode_mask = TIFM_MS_SYS_SRAC \| TIFM_MS_SYS_REI;
	504	writel(TIFM_MS_SYS_RESET, sock->addr + SOCK_MS_SYSTEM);
	505	writel(TIFM_MS_SYS_FCLR \| TIFM_MS_SYS_INTCLR,
	506	sock->addr + SOCK_MS_SYSTEM);
	507	writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
	508	} else if (value == MEMSTICK_POWER_OFF) {
	509	writel(TIFM_MS_SYS_FCLR \| TIFM_MS_SYS_INTCLR,
	510	sock->addr + SOCK_MS_SYSTEM);
	511	writel(0xffffffff, sock->addr + SOCK_MS_STATUS);
b7789998 AD	512	} else
b7789998 AD	513	return -EINVAL;
baf8532a AD	514	break;
	515	case MEMSTICK_INTERFACE:
	516	if (value == MEMSTICK_SERIAL) {
92b22d93	517	host->mode_mask = TIFM_MS_SYS_SRAC \| TIFM_MS_SYS_REI;
baf8532a AD	518	writel((~TIFM_CTRL_FAST_CLK)
	519	& readl(sock->addr + SOCK_CONTROL),
	520	sock->addr + SOCK_CONTROL);
e1f19995	521	} else if (value == MEMSTICK_PAR4) {
baf8532a AD	522	host->mode_mask = 0;
	523	writel(TIFM_CTRL_FAST_CLK
	524	\| readl(sock->addr + SOCK_CONTROL),
	525	sock->addr + SOCK_CONTROL);
b7789998 AD	526	} else
b7789998 AD	527	return -EINVAL;
baf8532a AD	528	break;
	529	};
	530
b7789998	531	return 0;
baf8532a AD	532	}
	533
	534	static void tifm_ms_abort(unsigned long data)
	535	{
	536	struct tifm_ms host = (struct tifm_ms )data;
	537
	538	dev_dbg(&host->dev->dev, "status %x\n",
	539	readl(host->dev->addr + SOCK_MS_STATUS));
	540	printk(KERN_ERR
	541	"%s : card failed to respond for a long period of time "
	542	"(%x, %x)\n",
	543	host->dev->dev.bus_id, host->req ? host->req->tpc : 0,
	544	host->cmd_flags);
	545
	546	tifm_eject(host->dev);
	547	}
	548
baf8532a AD	549	static int tifm_ms_probe(struct tifm_dev *sock)
	550	{
	551	struct memstick_host *msh;
	552	struct tifm_ms *host;
	553	int rc = -EIO;
	554
	555	if (!(TIFM_SOCK_STATE_OCCUPIED
	556	& readl(sock->addr + SOCK_PRESENT_STATE))) {
	557	printk(KERN_WARNING "%s : card gone, unexpectedly\n",
	558	sock->dev.bus_id);
	559	return rc;
	560	}
	561
	562	msh = memstick_alloc_host(sizeof(struct tifm_ms), &sock->dev);
	563	if (!msh)
	564	return -ENOMEM;
	565
	566	host = memstick_priv(msh);
	567	tifm_set_drvdata(sock, msh);
	568	host->dev = sock;
	569	host->timeout_jiffies = msecs_to_jiffies(1000);
baf8532a AD	570
	571	setup_timer(&host->timer, tifm_ms_abort, (unsigned long)host);
	572
	573	msh->request = tifm_ms_request;
	574	msh->set_param = tifm_ms_set_param;
	575	sock->card_event = tifm_ms_card_event;
	576	sock->data_event = tifm_ms_data_event;
eebbe9ca AD	577	if (tifm_has_ms_pif(sock))
eebbe9ca AD	578	msh->caps \|= MEMSTICK_CAP_PAR4;
baf8532a	579
eebbe9ca	580	rc = memstick_add_host(msh);
baf8532a AD	581	if (!rc)
	582	return 0;
	583
	584	memstick_free_host(msh);
	585	return rc;
	586	}
	587
	588	static void tifm_ms_remove(struct tifm_dev *sock)
	589	{
	590	struct memstick_host *msh = tifm_get_drvdata(sock);
	591	struct tifm_ms *host = memstick_priv(msh);
	592	int rc = 0;
	593	unsigned long flags;
	594
	595	spin_lock_irqsave(&sock->lock, flags);
	596	host->eject = 1;
	597	if (host->req) {
	598	del_timer(&host->timer);
	599	writel(TIFM_FIFO_INT_SETALL,
	600	sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
	601	writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
92b22d93	602	if (host->use_dma)
baf8532a AD	603	tifm_unmap_sg(sock, &host->req->sg, 1,
	604	host->req->data_dir == READ
	605	? PCI_DMA_TODEVICE
	606	: PCI_DMA_FROMDEVICE);
	607	host->req->error = -ETIME;
	608
	609	do {
	610	rc = memstick_next_req(msh, &host->req);
	611	if (!rc)
	612	host->req->error = -ETIME;
	613	} while (!rc);
	614	}
	615	spin_unlock_irqrestore(&sock->lock, flags);
	616
	617	memstick_remove_host(msh);
baf8532a AD	618	memstick_free_host(msh);
	619	}
	620
	621	#ifdef CONFIG_PM
	622
	623	static int tifm_ms_suspend(struct tifm_dev *sock, pm_message_t state)
	624	{
d114ad54 AD	625	struct memstick_host *msh = tifm_get_drvdata(sock);
	626
	627	memstick_suspend_host(msh);
baf8532a AD	628	return 0;
	629	}
	630
	631	static int tifm_ms_resume(struct tifm_dev *sock)
	632	{
	633	struct memstick_host *msh = tifm_get_drvdata(sock);
baf8532a	634
d114ad54	635	memstick_resume_host(msh);
baf8532a AD	636	return 0;
	637	}
	638
	639	#else
	640
	641	#define tifm_ms_suspend NULL
	642	#define tifm_ms_resume NULL
	643
	644	#endif /* CONFIG_PM */
	645
	646	static struct tifm_device_id tifm_ms_id_tbl[] = {
	647	{ TIFM_TYPE_MS }, { 0 }
	648	};
	649
	650	static struct tifm_driver tifm_ms_driver = {
	651	.driver = {
	652	.name = DRIVER_NAME,
	653	.owner = THIS_MODULE
	654	},
	655	.id_table = tifm_ms_id_tbl,
	656	.probe = tifm_ms_probe,
	657	.remove = tifm_ms_remove,
	658	.suspend = tifm_ms_suspend,
	659	.resume = tifm_ms_resume
	660	};
	661
	662	static int __init tifm_ms_init(void)
	663	{
	664	return tifm_register_driver(&tifm_ms_driver);
	665	}
	666
	667	static void __exit tifm_ms_exit(void)
	668	{
	669	tifm_unregister_driver(&tifm_ms_driver);
	670	}
	671
	672	MODULE_AUTHOR("Alex Dubov");
	673	MODULE_DESCRIPTION("TI FlashMedia MemoryStick driver");
	674	MODULE_LICENSE("GPL");
	675	MODULE_DEVICE_TABLE(tifm, tifm_ms_id_tbl);
baf8532a AD	676
	677	module_init(tifm_ms_init);
	678	module_exit(tifm_ms_exit);