56ca904053
Patch from Pavel Pisa This patch adds support of i.MX/MX1 SD/MMC controller. It has been significantly redesigned from the original Sascha Hauer's version to support scatter-gather DMA, to conform to latest Pierre Ossman's and Russell King's MMC-SD Linux 2.6.x infrastructure. The handling of all events has been moved to the softirq context and is designed with no busy-looping in mind. Unfortunately some controller bugs has to be overcome by limited looping about 2-20 usec but these are observed only for initial card recognition phase. There are still some missing/missed IRQs problems under heavy load. Help of somebody with access to the full SDHC design information is probably necessary. Regenerated against 2.6.16-git-060402 to solve clash with other patches. Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
68 lines
3 KiB
C
68 lines
3 KiB
C
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# define __REG16(x) (*((volatile u16 *)IO_ADDRESS(x)))
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#define MMC_STR_STP_CLK __REG16(IMX_MMC_BASE + 0x00)
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#define MMC_STATUS __REG16(IMX_MMC_BASE + 0x04)
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#define MMC_CLK_RATE __REG16(IMX_MMC_BASE + 0x08)
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#define MMC_CMD_DAT_CONT __REG16(IMX_MMC_BASE + 0x0C)
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#define MMC_RES_TO __REG16(IMX_MMC_BASE + 0x10)
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#define MMC_READ_TO __REG16(IMX_MMC_BASE + 0x14)
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#define MMC_BLK_LEN __REG16(IMX_MMC_BASE + 0x18)
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#define MMC_NOB __REG16(IMX_MMC_BASE + 0x1C)
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#define MMC_REV_NO __REG16(IMX_MMC_BASE + 0x20)
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#define MMC_INT_MASK __REG16(IMX_MMC_BASE + 0x24)
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#define MMC_CMD __REG16(IMX_MMC_BASE + 0x28)
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#define MMC_ARGH __REG16(IMX_MMC_BASE + 0x2C)
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#define MMC_ARGL __REG16(IMX_MMC_BASE + 0x30)
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#define MMC_RES_FIFO __REG16(IMX_MMC_BASE + 0x34)
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#define MMC_BUFFER_ACCESS __REG16(IMX_MMC_BASE + 0x38)
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#define MMC_BUFFER_ACCESS_OFS 0x38
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#define STR_STP_CLK_ENDIAN (1<<5)
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#define STR_STP_CLK_RESET (1<<3)
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#define STR_STP_CLK_ENABLE (1<<2)
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#define STR_STP_CLK_START_CLK (1<<1)
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#define STR_STP_CLK_STOP_CLK (1<<0)
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#define STATUS_CARD_PRESENCE (1<<15)
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#define STATUS_SDIO_INT_ACTIVE (1<<14)
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#define STATUS_END_CMD_RESP (1<<13)
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#define STATUS_WRITE_OP_DONE (1<<12)
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#define STATUS_DATA_TRANS_DONE (1<<11)
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#define STATUS_WR_CRC_ERROR_CODE_MASK (3<<10)
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#define STATUS_CARD_BUS_CLK_RUN (1<<8)
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#define STATUS_APPL_BUFF_FF (1<<7)
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#define STATUS_APPL_BUFF_FE (1<<6)
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#define STATUS_RESP_CRC_ERR (1<<5)
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#define STATUS_CRC_READ_ERR (1<<3)
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#define STATUS_CRC_WRITE_ERR (1<<2)
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#define STATUS_TIME_OUT_RESP (1<<1)
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#define STATUS_TIME_OUT_READ (1<<0)
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#define STATUS_ERR_MASK 0x2f
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#define CLK_RATE_PRESCALER(x) ((x) & 0x7)
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#define CLK_RATE_CLK_RATE(x) (((x) & 0x7) << 3)
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#define CMD_DAT_CONT_CMD_RESP_LONG_OFF (1<<12)
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#define CMD_DAT_CONT_STOP_READWAIT (1<<11)
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#define CMD_DAT_CONT_START_READWAIT (1<<10)
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#define CMD_DAT_CONT_BUS_WIDTH_1 (0<<8)
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#define CMD_DAT_CONT_BUS_WIDTH_4 (2<<8)
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#define CMD_DAT_CONT_INIT (1<<7)
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#define CMD_DAT_CONT_BUSY (1<<6)
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#define CMD_DAT_CONT_STREAM_BLOCK (1<<5)
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#define CMD_DAT_CONT_WRITE (1<<4)
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#define CMD_DAT_CONT_DATA_ENABLE (1<<3)
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#define CMD_DAT_CONT_RESPONSE_FORMAT_R1 (1)
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#define CMD_DAT_CONT_RESPONSE_FORMAT_R2 (2)
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#define CMD_DAT_CONT_RESPONSE_FORMAT_R3 (3)
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#define CMD_DAT_CONT_RESPONSE_FORMAT_R4 (4)
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#define CMD_DAT_CONT_RESPONSE_FORMAT_R5 (5)
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#define CMD_DAT_CONT_RESPONSE_FORMAT_R6 (6)
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#define INT_MASK_AUTO_CARD_DETECT (1<<6)
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#define INT_MASK_DAT0_EN (1<<5)
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#define INT_MASK_SDIO (1<<4)
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#define INT_MASK_BUF_READY (1<<3)
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#define INT_MASK_END_CMD_RES (1<<2)
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#define INT_MASK_WRITE_OP_DONE (1<<1)
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#define INT_MASK_DATA_TRAN (1<<0)
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#define INT_ALL (0x7f)
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