248 lines
7.3 KiB
C
248 lines
7.3 KiB
C
/*
|
|
* 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_OD (1 << 6)
|
|
#define MCI_ROD (1 << 7)
|
|
/*
|
|
* The ST Micro version does not have ROD and reuse the voltage registers for
|
|
* direction settings.
|
|
*/
|
|
#define MCI_ST_DATA2DIREN (1 << 2)
|
|
#define MCI_ST_CMDDIREN (1 << 3)
|
|
#define MCI_ST_DATA0DIREN (1 << 4)
|
|
#define MCI_ST_DATA31DIREN (1 << 5)
|
|
#define MCI_ST_FBCLKEN (1 << 7)
|
|
#define MCI_ST_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, hardware flow contronl, negative edges and clock inversion
|
|
* supported in ST Micro U300 and Ux500 versions
|
|
*/
|
|
#define MCI_ST_8BIT_BUS (1 << 12)
|
|
#define MCI_ST_U300_HWFCEN (1 << 13)
|
|
#define MCI_ST_UX500_NEG_EDGE (1 << 13)
|
|
#define MCI_ST_UX500_HWFCEN (1 << 14)
|
|
#define MCI_ST_UX500_CLK_INV (1 << 15)
|
|
/* Modified PL180 on Versatile Express platform */
|
|
#define MCI_ARM_HWFCEN (1 << 12)
|
|
|
|
/* Modified on Qualcomm Integrations */
|
|
#define MCI_QCOM_CLK_WIDEBUS_8 (BIT(10) | BIT(11))
|
|
#define MCI_QCOM_CLK_FLOWENA BIT(12)
|
|
#define MCI_QCOM_CLK_INVERTOUT BIT(13)
|
|
|
|
/* select in latch data and command in */
|
|
#define MCI_QCOM_CLK_SELECT_IN_FBCLK BIT(15)
|
|
#define MCI_QCOM_CLK_SELECT_IN_DDR_MODE (BIT(14) | BIT(15))
|
|
|
|
#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)
|
|
/* Argument flag extenstions in the ST Micro versions */
|
|
#define MCI_ST_SDIO_SUSP (1 << 11)
|
|
#define MCI_ST_ENCMD_COMPL (1 << 12)
|
|
#define MCI_ST_NIEN (1 << 13)
|
|
#define MCI_ST_CE_ATACMD (1 << 14)
|
|
|
|
/* Modified on Qualcomm Integrations */
|
|
#define MCI_QCOM_CSPM_DATCMD BIT(12)
|
|
#define MCI_QCOM_CSPM_MCIABORT BIT(13)
|
|
#define MCI_QCOM_CSPM_CCSENABLE BIT(14)
|
|
#define MCI_QCOM_CSPM_CCSDISABLE BIT(15)
|
|
#define MCI_QCOM_CSPM_AUTO_CMD19 BIT(16)
|
|
#define MCI_QCOM_CSPM_AUTO_CMD21 BIT(21)
|
|
|
|
#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)
|
|
/* Control register extensions in the ST Micro U300 and Ux500 versions */
|
|
#define MCI_ST_DPSM_RWSTART (1 << 8)
|
|
#define MCI_ST_DPSM_RWSTOP (1 << 9)
|
|
#define MCI_ST_DPSM_RWMOD (1 << 10)
|
|
#define MCI_ST_DPSM_SDIOEN (1 << 11)
|
|
/* Control register extensions in the ST Micro Ux500 versions */
|
|
#define MCI_ST_DPSM_DMAREQCTL (1 << 12)
|
|
#define MCI_ST_DPSM_DBOOTMODEEN (1 << 13)
|
|
#define MCI_ST_DPSM_BUSYMODE (1 << 14)
|
|
#define MCI_ST_DPSM_DDRMODE (1 << 15)
|
|
|
|
#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_STARTBITERR (1 << 9)
|
|
#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)
|
|
/* Extended status bits for the ST Micro variants */
|
|
#define MCI_ST_SDIOIT (1 << 22)
|
|
#define MCI_ST_CEATAEND (1 << 23)
|
|
#define MCI_ST_CARDBUSY (1 << 24)
|
|
|
|
#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_STARTBITERRCLR (1 << 9)
|
|
#define MCI_DATABLOCKENDCLR (1 << 10)
|
|
/* Extended status bits for the ST Micro variants */
|
|
#define MCI_ST_SDIOITC (1 << 22)
|
|
#define MCI_ST_CEATAENDC (1 << 23)
|
|
#define MCI_ST_BUSYENDC (1 << 24)
|
|
|
|
#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_STARTBITERRMASK (1 << 9)
|
|
#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)
|
|
/* Extended status bits for the ST Micro variants */
|
|
#define MCI_ST_SDIOITMASK (1 << 22)
|
|
#define MCI_ST_CEATAENDMASK (1 << 23)
|
|
#define MCI_ST_BUSYEND (1 << 24)
|
|
|
|
#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_STARTBITERRMASK)
|
|
|
|
/* These interrupts are directed to IRQ1 when two IRQ lines are available */
|
|
#define MCI_IRQ1MASK \
|
|
(MCI_RXFIFOHALFFULLMASK | MCI_RXDATAAVLBLMASK | \
|
|
MCI_TXFIFOHALFEMPTYMASK)
|
|
|
|
#define NR_SG 128
|
|
|
|
struct clk;
|
|
struct variant_data;
|
|
struct dma_chan;
|
|
|
|
struct mmci_host_next {
|
|
struct dma_async_tx_descriptor *dma_desc;
|
|
struct dma_chan *dma_chan;
|
|
s32 cookie;
|
|
};
|
|
|
|
struct mmci_host {
|
|
phys_addr_t phybase;
|
|
void __iomem *base;
|
|
struct mmc_request *mrq;
|
|
struct mmc_command *cmd;
|
|
struct mmc_data *data;
|
|
struct mmc_host *mmc;
|
|
struct clk *clk;
|
|
bool singleirq;
|
|
|
|
spinlock_t lock;
|
|
|
|
unsigned int mclk;
|
|
/* cached value of requested clk in set_ios */
|
|
unsigned int clock_cache;
|
|
unsigned int cclk;
|
|
u32 pwr_reg;
|
|
u32 pwr_reg_add;
|
|
u32 clk_reg;
|
|
u32 datactrl_reg;
|
|
u32 busy_status;
|
|
bool vqmmc_enabled;
|
|
struct mmci_platform_data *plat;
|
|
struct variant_data *variant;
|
|
|
|
u8 hw_designer;
|
|
u8 hw_revision:4;
|
|
|
|
struct timer_list timer;
|
|
unsigned int oldstat;
|
|
|
|
/* pio stuff */
|
|
struct sg_mapping_iter sg_miter;
|
|
unsigned int size;
|
|
int (*get_rx_fifocnt)(struct mmci_host *h, u32 status, int remain);
|
|
|
|
#ifdef CONFIG_DMA_ENGINE
|
|
/* DMA stuff */
|
|
struct dma_chan *dma_current;
|
|
struct dma_chan *dma_rx_channel;
|
|
struct dma_chan *dma_tx_channel;
|
|
struct dma_async_tx_descriptor *dma_desc_current;
|
|
struct mmci_host_next next_data;
|
|
|
|
#define dma_inprogress(host) ((host)->dma_current)
|
|
#else
|
|
#define dma_inprogress(host) (0)
|
|
#endif
|
|
};
|
|
|