180 lines
4.7 KiB
C
180 lines
4.7 KiB
C
/*
|
|
* linux/drivers/mmc/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_OD (1 << 6)
|
|
#define MCI_ROD (1 << 7)
|
|
|
|
#define MMCICLOCK 0x004
|
|
#define MCI_CLK_ENABLE (1 << 8)
|
|
#define MCI_CLK_PWRSAVE (1 << 9)
|
|
#define MCI_CLK_BYPASS (1 << 10)
|
|
|
|
#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 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 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 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 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 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;
|
|
|
|
unsigned int data_xfered;
|
|
|
|
spinlock_t lock;
|
|
|
|
unsigned int mclk;
|
|
unsigned int cclk;
|
|
u32 pwr;
|
|
struct mmc_platform_data *plat;
|
|
|
|
struct timer_list timer;
|
|
unsigned int oldstat;
|
|
|
|
unsigned int sg_len;
|
|
|
|
/* pio stuff */
|
|
struct scatterlist *sg_ptr;
|
|
unsigned int sg_off;
|
|
unsigned int size;
|
|
};
|
|
|
|
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, 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);
|
|
}
|