[net-next-2.6.git] / drivers / mmc / host / tmio_mmc.h

/* Definitons for use with the tmio_mmc.c
 *
 * (c) 2004 Ian Molton <spyro@f2s.com>
 * (c) 2007 Ian Molton <spyro@f2s.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.
 *
 */

#include <linux/highmem.h>

#define CTL_SD_CMD 0x00
#define CTL_ARG_REG 0x04
#define CTL_STOP_INTERNAL_ACTION 0x08
#define CTL_XFER_BLK_COUNT 0xa
#define CTL_RESPONSE 0x0c
#define CTL_STATUS 0x1c
#define CTL_IRQ_MASK 0x20
#define CTL_SD_CARD_CLK_CTL 0x24
#define CTL_SD_XFER_LEN 0x26
#define CTL_SD_MEM_CARD_OPT 0x28
#define CTL_SD_ERROR_DETAIL_STATUS 0x2c
#define CTL_SD_DATA_PORT 0x30
#define CTL_TRANSACTION_CTL 0x34
#define CTL_RESET_SD 0xe0
#define CTL_SDIO_REGS 0x100
#define CTL_CLK_AND_WAIT_CTL 0x138
#define CTL_RESET_SDIO 0x1e0

/* Definitions for values the CTRL_STATUS register can take. */
#define TMIO_STAT_CMDRESPEND    0x00000001
#define TMIO_STAT_DATAEND       0x00000004
#define TMIO_STAT_CARD_REMOVE   0x00000008
#define TMIO_STAT_CARD_INSERT   0x00000010
#define TMIO_STAT_SIGSTATE      0x00000020
#define TMIO_STAT_WRPROTECT     0x00000080
#define TMIO_STAT_CARD_REMOVE_A 0x00000100
#define TMIO_STAT_CARD_INSERT_A 0x00000200
#define TMIO_STAT_SIGSTATE_A    0x00000400
#define TMIO_STAT_CMD_IDX_ERR   0x00010000
#define TMIO_STAT_CRCFAIL       0x00020000
#define TMIO_STAT_STOPBIT_ERR   0x00040000
#define TMIO_STAT_DATATIMEOUT   0x00080000
#define TMIO_STAT_RXOVERFLOW    0x00100000
#define TMIO_STAT_TXUNDERRUN    0x00200000
#define TMIO_STAT_CMDTIMEOUT    0x00400000
#define TMIO_STAT_RXRDY         0x01000000
#define TMIO_STAT_TXRQ          0x02000000
#define TMIO_STAT_ILL_FUNC      0x20000000
#define TMIO_STAT_CMD_BUSY      0x40000000
#define TMIO_STAT_ILL_ACCESS    0x80000000

/* Define some IRQ masks */
/* This is the mask used at reset by the chip */
#define TMIO_MASK_ALL           0x837f031d
#define TMIO_MASK_READOP  (TMIO_STAT_RXRDY | TMIO_STAT_DATAEND)
#define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND)
#define TMIO_MASK_CMD     (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT | \
		TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT)
#define TMIO_MASK_IRQ     (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD)


#define enable_mmc_irqs(host, i) \
	do { \
		u32 mask;\
		mask  = sd_ctrl_read32((host), CTL_IRQ_MASK); \
		mask &= ~((i) & TMIO_MASK_IRQ); \
		sd_ctrl_write32((host), CTL_IRQ_MASK, mask); \
	} while (0)

#define disable_mmc_irqs(host, i) \
	do { \
		u32 mask;\
		mask  = sd_ctrl_read32((host), CTL_IRQ_MASK); \
		mask |= ((i) & TMIO_MASK_IRQ); \
		sd_ctrl_write32((host), CTL_IRQ_MASK, mask); \
	} while (0)

#define ack_mmc_irqs(host, i) \
	do { \
		u32 mask;\
		mask  = sd_ctrl_read32((host), CTL_STATUS); \
		mask &= ~((i) & TMIO_MASK_IRQ); \
		sd_ctrl_write32((host), CTL_STATUS, mask); \
	} while (0)


struct tmio_mmc_host {
	void __iomem *ctl;
	unsigned long bus_shift;
	struct mmc_command      *cmd;
	struct mmc_request      *mrq;
	struct mmc_data         *data;
	struct mmc_host         *mmc;
	int                     irq;

	/* Callbacks for clock / power control */
	void (*set_pwr)(struct platform_device *host, int state);
	void (*set_clk_div)(struct platform_device *host, int state);

	/* pio related stuff */
	struct scatterlist      *sg_ptr;
	unsigned int            sg_len;
	unsigned int            sg_off;

	struct platform_device *pdev;
};

#include <linux/io.h>

static inline u16 sd_ctrl_read16(struct tmio_mmc_host *host, int addr)
{
	return readw(host->ctl + (addr << host->bus_shift));
}

static inline void sd_ctrl_read16_rep(struct tmio_mmc_host *host, int addr,
		u16 *buf, int count)
{
	readsw(host->ctl + (addr << host->bus_shift), buf, count);
}

static inline u32 sd_ctrl_read32(struct tmio_mmc_host *host, int addr)
{
	return readw(host->ctl + (addr << host->bus_shift)) |
	       readw(host->ctl + ((addr + 2) << host->bus_shift)) << 16;
}

static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr,
		u16 val)
{
	writew(val, host->ctl + (addr << host->bus_shift));
}

static inline void sd_ctrl_write16_rep(struct tmio_mmc_host *host, int addr,
		u16 *buf, int count)
{
	writesw(host->ctl + (addr << host->bus_shift), buf, count);
}

static inline void sd_ctrl_write32(struct tmio_mmc_host *host, int addr,
		u32 val)
{
	writew(val, host->ctl + (addr << host->bus_shift));
	writew(val >> 16, host->ctl + ((addr + 2) << host->bus_shift));
}

#include <linux/scatterlist.h>
#include <linux/blkdev.h>

static inline void tmio_mmc_init_sg(struct tmio_mmc_host *host,
	struct mmc_data *data)
{
	host->sg_len = data->sg_len;
	host->sg_ptr = data->sg;
	host->sg_off = 0;
}

static inline int tmio_mmc_next_sg(struct tmio_mmc_host *host)
{
	host->sg_ptr = sg_next(host->sg_ptr);
	host->sg_off = 0;
	return --host->sg_len;
}

static inline char *tmio_mmc_kmap_atomic(struct tmio_mmc_host *host,
	unsigned long *flags)
{
	struct scatterlist *sg = host->sg_ptr;

	local_irq_save(*flags);
	return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset;
}

static inline void tmio_mmc_kunmap_atomic(struct tmio_mmc_host *host,
	unsigned long *flags)
{
	kunmap_atomic(sg_page(host->sg_ptr), KM_BIO_SRC_IRQ);
	local_irq_restore(*flags);
}

#ifdef CONFIG_MMC_DEBUG

#define STATUS_TO_TEXT(a) \
	do { \
		if (status & TMIO_STAT_##a) \
			printk(#a); \
	} while (0)

void pr_debug_status(u32 status)
{
	printk(KERN_DEBUG "status: %08x = ", status);
	STATUS_TO_TEXT(CARD_REMOVE);
	STATUS_TO_TEXT(CARD_INSERT);
	STATUS_TO_TEXT(SIGSTATE);
	STATUS_TO_TEXT(WRPROTECT);
	STATUS_TO_TEXT(CARD_REMOVE_A);
	STATUS_TO_TEXT(CARD_INSERT_A);
	STATUS_TO_TEXT(SIGSTATE_A);
	STATUS_TO_TEXT(CMD_IDX_ERR);
	STATUS_TO_TEXT(STOPBIT_ERR);
	STATUS_TO_TEXT(ILL_FUNC);
	STATUS_TO_TEXT(CMD_BUSY);
	STATUS_TO_TEXT(CMDRESPEND);
	STATUS_TO_TEXT(DATAEND);
	STATUS_TO_TEXT(CRCFAIL);
	STATUS_TO_TEXT(DATATIMEOUT);
	STATUS_TO_TEXT(CMDTIMEOUT);
	STATUS_TO_TEXT(RXOVERFLOW);
	STATUS_TO_TEXT(TXUNDERRUN);
	STATUS_TO_TEXT(RXRDY);
	STATUS_TO_TEXT(TXRQ);
	STATUS_TO_TEXT(ILL_ACCESS);
	printk("\n");
}

#else
#define pr_debug_status(s)  do { } while (0)
#endif
Commit	Line	Data
4a48998f IM	1	/* Definitons for use with the tmio_mmc.c
	2	*
	3	* (c) 2004 Ian Molton <spyro@f2s.com>
	4	* (c) 2007 Ian Molton <spyro@f2s.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	*/
4cb32906 AB	11
	12	#include <linux/highmem.h>
	13
4a48998f IM	14	#define CTL_SD_CMD 0x00
	15	#define CTL_ARG_REG 0x04
	16	#define CTL_STOP_INTERNAL_ACTION 0x08
	17	#define CTL_XFER_BLK_COUNT 0xa
	18	#define CTL_RESPONSE 0x0c
	19	#define CTL_STATUS 0x1c
	20	#define CTL_IRQ_MASK 0x20
	21	#define CTL_SD_CARD_CLK_CTL 0x24
	22	#define CTL_SD_XFER_LEN 0x26
	23	#define CTL_SD_MEM_CARD_OPT 0x28
	24	#define CTL_SD_ERROR_DETAIL_STATUS 0x2c
	25	#define CTL_SD_DATA_PORT 0x30
	26	#define CTL_TRANSACTION_CTL 0x34
	27	#define CTL_RESET_SD 0xe0
	28	#define CTL_SDIO_REGS 0x100
	29	#define CTL_CLK_AND_WAIT_CTL 0x138
	30	#define CTL_RESET_SDIO 0x1e0
	31
	32	/* Definitions for values the CTRL_STATUS register can take. */
	33	#define TMIO_STAT_CMDRESPEND 0x00000001
	34	#define TMIO_STAT_DATAEND 0x00000004
	35	#define TMIO_STAT_CARD_REMOVE 0x00000008
	36	#define TMIO_STAT_CARD_INSERT 0x00000010
	37	#define TMIO_STAT_SIGSTATE 0x00000020
	38	#define TMIO_STAT_WRPROTECT 0x00000080
	39	#define TMIO_STAT_CARD_REMOVE_A 0x00000100
	40	#define TMIO_STAT_CARD_INSERT_A 0x00000200
	41	#define TMIO_STAT_SIGSTATE_A 0x00000400
	42	#define TMIO_STAT_CMD_IDX_ERR 0x00010000
	43	#define TMIO_STAT_CRCFAIL 0x00020000
	44	#define TMIO_STAT_STOPBIT_ERR 0x00040000
	45	#define TMIO_STAT_DATATIMEOUT 0x00080000
	46	#define TMIO_STAT_RXOVERFLOW 0x00100000
	47	#define TMIO_STAT_TXUNDERRUN 0x00200000
	48	#define TMIO_STAT_CMDTIMEOUT 0x00400000
	49	#define TMIO_STAT_RXRDY 0x01000000
	50	#define TMIO_STAT_TXRQ 0x02000000
	51	#define TMIO_STAT_ILL_FUNC 0x20000000
	52	#define TMIO_STAT_CMD_BUSY 0x40000000
	53	#define TMIO_STAT_ILL_ACCESS 0x80000000
	54
	55	/* Define some IRQ masks */
	56	/* This is the mask used at reset by the chip */
	57	#define TMIO_MASK_ALL 0x837f031d
a8c39d8d GL	58	#define TMIO_MASK_READOP (TMIO_STAT_RXRDY \| TMIO_STAT_DATAEND)
a8c39d8d GL	59	#define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ \| TMIO_STAT_DATAEND)
4a48998f IM	60	#define TMIO_MASK_CMD (TMIO_STAT_CMDRESPEND \| TMIO_STAT_CMDTIMEOUT \| \
	61	TMIO_STAT_CARD_REMOVE \| TMIO_STAT_CARD_INSERT)
	62	#define TMIO_MASK_IRQ (TMIO_MASK_READOP \| TMIO_MASK_WRITEOP \| TMIO_MASK_CMD)
	63
5e74672c PZ	64
5e74672c PZ	65	#define enable_mmc_irqs(host, i) \
4a48998f IM	66	do { \
4a48998f IM	67	u32 mask;\
5e74672c	68	mask = sd_ctrl_read32((host), CTL_IRQ_MASK); \
4a48998f	69	mask &= ~((i) & TMIO_MASK_IRQ); \
5e74672c	70	sd_ctrl_write32((host), CTL_IRQ_MASK, mask); \
4a48998f IM	71	} while (0)
4a48998f IM	72
5e74672c	73	#define disable_mmc_irqs(host, i) \
4a48998f IM	74	do { \
4a48998f IM	75	u32 mask;\
5e74672c	76	mask = sd_ctrl_read32((host), CTL_IRQ_MASK); \
4a48998f	77	mask \|= ((i) & TMIO_MASK_IRQ); \
5e74672c	78	sd_ctrl_write32((host), CTL_IRQ_MASK, mask); \
4a48998f IM	79	} while (0)
4a48998f IM	80
5e74672c	81	#define ack_mmc_irqs(host, i) \
4a48998f IM	82	do { \
4a48998f IM	83	u32 mask;\
5e74672c	84	mask = sd_ctrl_read32((host), CTL_STATUS); \
4a48998f	85	mask &= ~((i) & TMIO_MASK_IRQ); \
5e74672c	86	sd_ctrl_write32((host), CTL_STATUS, mask); \
4a48998f IM	87	} while (0)
	88
	89
	90	struct tmio_mmc_host {
4a48998f	91	void __iomem *ctl;
5e74672c	92	unsigned long bus_shift;
4a48998f IM	93	struct mmc_command *cmd;
	94	struct mmc_request *mrq;
	95	struct mmc_data *data;
	96	struct mmc_host *mmc;
	97	int irq;
	98
64e8867b IM	99	/* Callbacks for clock / power control */
	100	void (set_pwr)(struct platform_device host, int state);
	101	void (set_clk_div)(struct platform_device host, int state);
	102
4a48998f IM	103	/* pio related stuff */
	104	struct scatterlist *sg_ptr;
	105	unsigned int sg_len;
	106	unsigned int sg_off;
64e8867b IM	107
64e8867b IM	108	struct platform_device *pdev;
4a48998f IM	109	};
4a48998f IM	110
5e74672c PZ	111	#include <linux/io.h>
	112
	113	static inline u16 sd_ctrl_read16(struct tmio_mmc_host *host, int addr)
	114	{
	115	return readw(host->ctl + (addr << host->bus_shift));
	116	}
	117
	118	static inline void sd_ctrl_read16_rep(struct tmio_mmc_host *host, int addr,
	119	u16 *buf, int count)
	120	{
	121	readsw(host->ctl + (addr << host->bus_shift), buf, count);
	122	}
	123
	124	static inline u32 sd_ctrl_read32(struct tmio_mmc_host *host, int addr)
	125	{
	126	return readw(host->ctl + (addr << host->bus_shift)) \|
	127	readw(host->ctl + ((addr + 2) << host->bus_shift)) << 16;
	128	}
	129
	130	static inline void sd_ctrl_write16(struct tmio_mmc_host *host, int addr,
	131	u16 val)
	132	{
	133	writew(val, host->ctl + (addr << host->bus_shift));
	134	}
	135
	136	static inline void sd_ctrl_write16_rep(struct tmio_mmc_host *host, int addr,
	137	u16 *buf, int count)
	138	{
	139	writesw(host->ctl + (addr << host->bus_shift), buf, count);
	140	}
	141
	142	static inline void sd_ctrl_write32(struct tmio_mmc_host *host, int addr,
	143	u32 val)
	144	{
	145	writew(val, host->ctl + (addr << host->bus_shift));
	146	writew(val >> 16, host->ctl + ((addr + 2) << host->bus_shift));
	147	}
	148
4a48998f IM	149	#include <linux/scatterlist.h>
	150	#include <linux/blkdev.h>
	151
	152	static inline void tmio_mmc_init_sg(struct tmio_mmc_host *host,
	153	struct mmc_data *data)
	154	{
	155	host->sg_len = data->sg_len;
	156	host->sg_ptr = data->sg;
	157	host->sg_off = 0;
	158	}
	159
	160	static inline int tmio_mmc_next_sg(struct tmio_mmc_host *host)
	161	{
	162	host->sg_ptr = sg_next(host->sg_ptr);
	163	host->sg_off = 0;
	164	return --host->sg_len;
	165	}
	166
	167	static inline char tmio_mmc_kmap_atomic(struct tmio_mmc_host host,
	168	unsigned long *flags)
	169	{
	170	struct scatterlist *sg = host->sg_ptr;
	171
	172	local_irq_save(*flags);
	173	return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset;
	174	}
	175
	176	static inline void tmio_mmc_kunmap_atomic(struct tmio_mmc_host *host,
	177	unsigned long *flags)
	178	{
	179	kunmap_atomic(sg_page(host->sg_ptr), KM_BIO_SRC_IRQ);
	180	local_irq_restore(*flags);
	181	}
	182
	183	#ifdef CONFIG_MMC_DEBUG
	184
	185	#define STATUS_TO_TEXT(a) \
	186	do { \
	187	if (status & TMIO_STAT_##a) \
fe246eb0	188	printk(#a); \
4a48998f IM	189	} while (0)
4a48998f IM	190
fe246eb0	191	void pr_debug_status(u32 status)
4a48998f IM	192	{
	193	printk(KERN_DEBUG "status: %08x = ", status);
	194	STATUS_TO_TEXT(CARD_REMOVE);
	195	STATUS_TO_TEXT(CARD_INSERT);
	196	STATUS_TO_TEXT(SIGSTATE);
	197	STATUS_TO_TEXT(WRPROTECT);
	198	STATUS_TO_TEXT(CARD_REMOVE_A);
	199	STATUS_TO_TEXT(CARD_INSERT_A);
	200	STATUS_TO_TEXT(SIGSTATE_A);
	201	STATUS_TO_TEXT(CMD_IDX_ERR);
	202	STATUS_TO_TEXT(STOPBIT_ERR);
	203	STATUS_TO_TEXT(ILL_FUNC);
	204	STATUS_TO_TEXT(CMD_BUSY);
	205	STATUS_TO_TEXT(CMDRESPEND);
	206	STATUS_TO_TEXT(DATAEND);
	207	STATUS_TO_TEXT(CRCFAIL);
	208	STATUS_TO_TEXT(DATATIMEOUT);
	209	STATUS_TO_TEXT(CMDTIMEOUT);
	210	STATUS_TO_TEXT(RXOVERFLOW);
	211	STATUS_TO_TEXT(TXUNDERRUN);
	212	STATUS_TO_TEXT(RXRDY);
	213	STATUS_TO_TEXT(TXRQ);
	214	STATUS_TO_TEXT(ILL_ACCESS);
	215	printk("\n");
	216	}
	217
	218	#else
	219	#define pr_debug_status(s) do { } while (0)
	220	#endif