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/*
* linux/drivers/mmc/host/mmci.h - ARM PrimeCell MMCI PL180/1 driver
*
* Copyright (C) 2003 Deep Blue Solutions, Ltd, All Rights Reserved.
*
* 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.
*/
#define MMCIPOWER 0x000
#define MCI_PWR_OFF 0x00
#define MCI_PWR_UP 0x02
#define MCI_PWR_ON 0x03
#define MCI_DATA2DIREN (1 << 2)
#define MCI_CMDDIREN (1 << 3)
#define MCI_DATA0DIREN (1 << 4)
#define MCI_DATA31DIREN (1 << 5)
#define MCI_OD (1 << 6)
#define MCI_ROD (1 << 7)
/* The ST Micro version does not have ROD */
#define MCI_FBCLKEN (1 << 7)
#define MCI_DATA74DIREN (1 << 8)
#define MMCICLOCK 0x004
#define MCI_CLK_ENABLE (1 << 8)
#define MCI_CLK_PWRSAVE (1 << 9)
#define MCI_CLK_BYPASS (1 << 10)
#define MCI_4BIT_BUS (1 << 11)
/* 8bit wide buses supported in ST Micro versions */
#define MCI_ST_8BIT_BUS (1 << 12)
/* HW flow control on the ST Micro version */
#define MCI_ST_FCEN (1 << 13)
#define MMCIARGUMENT 0x008
#define MMCICOMMAND 0x00c
#define MCI_CPSM_RESPONSE (1 << 6)
#define MCI_CPSM_LONGRSP (1 << 7)
#define MCI_CPSM_INTERRUPT (1 << 8)
#define MCI_CPSM_PENDING (1 << 9)
#define MCI_CPSM_ENABLE (1 << 10)
#define MCI_SDIO_SUSP (1 << 11)
#define MCI_ENCMD_COMPL (1 << 12)
#define MCI_NIEN (1 << 13)
#define MCI_CE_ATACMD (1 << 14)
#define MMCIRESPCMD 0x010
#define MMCIRESPONSE0 0x014
#define MMCIRESPONSE1 0x018
#define MMCIRESPONSE2 0x01c
#define MMCIRESPONSE3 0x020
#define MMCIDATATIMER 0x024
#define MMCIDATALENGTH 0x028
#define MMCIDATACTRL 0x02c
#define MCI_DPSM_ENABLE (1 << 0)
#define MCI_DPSM_DIRECTION (1 << 1)
#define MCI_DPSM_MODE (1 << 2)
#define MCI_DPSM_DMAENABLE (1 << 3)
#define MCI_DPSM_BLOCKSIZE (1 << 4)
#define MCI_DPSM_RWSTART (1 << 8)
#define MCI_DPSM_RWSTOP (1 << 9)
#define MCI_DPSM_RWMOD (1 << 10)
#define MCI_DPSM_SDIOEN (1 << 11)
#define MMCIDATACNT 0x030
#define MMCISTATUS 0x034
#define MCI_CMDCRCFAIL (1 << 0)
#define MCI_DATACRCFAIL (1 << 1)
#define MCI_CMDTIMEOUT (1 << 2)
#define MCI_DATATIMEOUT (1 << 3)
#define MCI_TXUNDERRUN (1 << 4)
#define MCI_RXOVERRUN (1 << 5)
#define MCI_CMDRESPEND (1 << 6)
#define MCI_CMDSENT (1 << 7)
#define MCI_DATAEND (1 << 8)
#define MCI_DATABLOCKEND (1 << 10)
#define MCI_CMDACTIVE (1 << 11)
#define MCI_TXACTIVE (1 << 12)
#define MCI_RXACTIVE (1 << 13)
#define MCI_TXFIFOHALFEMPTY (1 << 14)
#define MCI_RXFIFOHALFFULL (1 << 15)
#define MCI_TXFIFOFULL (1 << 16)
#define MCI_RXFIFOFULL (1 << 17)
#define MCI_TXFIFOEMPTY (1 << 18)
#define MCI_RXFIFOEMPTY (1 << 19)
#define MCI_TXDATAAVLBL (1 << 20)
#define MCI_RXDATAAVLBL (1 << 21)
#define MCI_SDIOIT (1 << 22)
#define MCI_CEATAEND (1 << 23)
#define MMCICLEAR 0x038
#define MCI_CMDCRCFAILCLR (1 << 0)
#define MCI_DATACRCFAILCLR (1 << 1)
#define MCI_CMDTIMEOUTCLR (1 << 2)
#define MCI_DATATIMEOUTCLR (1 << 3)
#define MCI_TXUNDERRUNCLR (1 << 4)
#define MCI_RXOVERRUNCLR (1 << 5)
#define MCI_CMDRESPENDCLR (1 << 6)
#define MCI_CMDSENTCLR (1 << 7)
#define MCI_DATAENDCLR (1 << 8)
#define MCI_DATABLOCKENDCLR (1 << 10)
#define MCI_SDIOITC (1 << 22)
#define MCI_CEATAENDC (1 << 23)
#define MMCIMASK0 0x03c
#define MCI_CMDCRCFAILMASK (1 << 0)
#define MCI_DATACRCFAILMASK (1 << 1)
#define MCI_CMDTIMEOUTMASK (1 << 2)
#define MCI_DATATIMEOUTMASK (1 << 3)
#define MCI_TXUNDERRUNMASK (1 << 4)
#define MCI_RXOVERRUNMASK (1 << 5)
#define MCI_CMDRESPENDMASK (1 << 6)
#define MCI_CMDSENTMASK (1 << 7)
#define MCI_DATAENDMASK (1 << 8)
#define MCI_DATABLOCKENDMASK (1 << 10)
#define MCI_CMDACTIVEMASK (1 << 11)
#define MCI_TXACTIVEMASK (1 << 12)
#define MCI_RXACTIVEMASK (1 << 13)
#define MCI_TXFIFOHALFEMPTYMASK (1 << 14)
#define MCI_RXFIFOHALFFULLMASK (1 << 15)
#define MCI_TXFIFOFULLMASK (1 << 16)
#define MCI_RXFIFOFULLMASK (1 << 17)
#define MCI_TXFIFOEMPTYMASK (1 << 18)
#define MCI_RXFIFOEMPTYMASK (1 << 19)
#define MCI_TXDATAAVLBLMASK (1 << 20)
#define MCI_RXDATAAVLBLMASK (1 << 21)
#define MCI_SDIOITMASK (1 << 22)
#define MCI_CEATAENDMASK (1 << 23)
#define MMCIMASK1 0x040
#define MMCIFIFOCNT 0x048
#define MMCIFIFO 0x080 /* to 0x0bc */
#define MCI_IRQENABLE \
(MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK| \
MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK| \
MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATABLOCKENDMASK)
/*
* The size of the FIFO in bytes.
*/
#define MCI_FIFOSIZE (16*4)
#define MCI_FIFOHALFSIZE (MCI_FIFOSIZE / 2)
#define NR_SG 16
struct clk;
struct mmci_host {
void __iomem *base;
struct mmc_request *mrq;
struct mmc_command *cmd;
struct mmc_data *data;
struct mmc_host *mmc;
struct clk *clk;
int gpio_cd;
int gpio_wp;
unsigned int data_xfered;
spinlock_t lock;
unsigned int mclk;
unsigned int cclk;
u32 pwr;
struct mmci_platform_data *plat;
u8 hw_designer;
u8 hw_revision:4;
struct timer_list timer;
unsigned int oldstat;
unsigned int sg_len;
/* pio stuff */
struct scatterlist *sg_ptr;
unsigned int sg_off;
unsigned int size;
struct regulator *vcc;
};
static inline void mmci_init_sg(struct mmci_host *host, struct mmc_data *data)
{
/*
* Ideally, we want the higher levels to pass us a scatter list.
*/
host->sg_len = data->sg_len;
host->sg_ptr = data->sg;
host->sg_off = 0;
}
static inline int mmci_next_sg(struct mmci_host *host)
{
host->sg_ptr++;
host->sg_off = 0;
return --host->sg_len;
}
static inline char *mmci_kmap_atomic(struct mmci_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 mmci_kunmap_atomic(struct mmci_host *host, void *buffer, unsigned long *flags)
{
kunmap_atomic(buffer, KM_BIO_SRC_IRQ);
local_irq_restore(*flags);
}
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