mirror of
https://github.com/smaeul/u-boot.git
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766b16fe18
Writes in u-boot are so rare, and the logic to know when is the last write and do a flush only there is sufficiently difficult. Just do a flush after every write. This incurs, usually, one extra flush when the rare writes do happen. Signed-off-by: Marc Jones <marc.jones@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
268 lines
10 KiB
C
268 lines
10 KiB
C
/*
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* (C) Copyright 2000
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Most of the following information was derived from the document
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* "Information Technology - AT Attachment-3 Interface (ATA-3)"
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* which can be found at:
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* http://www.dt.wdc.com/ata/ata-3/ata3r5v.zip
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* ftp://poctok.iae.nsk.su/pub/asm/Documents/IDE/ATA3R5V.ZIP
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* ftp://ftp.fee.vutbr.cz/pub/doc/io/ata/ata-3/ata3r5v.zip
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*/
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#ifndef _ATA_H
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#define _ATA_H
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#include <libata.h>
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/* Register addressing depends on the hardware design; for instance,
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* 8-bit (register) and 16-bit (data) accesses might use different
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* address spaces. This is implemented by the following definitions.
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*/
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#ifndef CONFIG_SYS_ATA_STRIDE
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#define CONFIG_SYS_ATA_STRIDE 1
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#endif
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#define ATA_IO_DATA(x) (CONFIG_SYS_ATA_DATA_OFFSET+((x) * CONFIG_SYS_ATA_STRIDE))
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#define ATA_IO_REG(x) (CONFIG_SYS_ATA_REG_OFFSET +((x) * CONFIG_SYS_ATA_STRIDE))
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#define ATA_IO_ALT(x) (CONFIG_SYS_ATA_ALT_OFFSET +((x) * CONFIG_SYS_ATA_STRIDE))
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/*
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* I/O Register Descriptions
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*/
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#define ATA_DATA_REG ATA_IO_DATA(0)
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#define ATA_ERROR_REG ATA_IO_REG(1)
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#define ATA_SECT_CNT ATA_IO_REG(2)
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#define ATA_SECT_NUM ATA_IO_REG(3)
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#define ATA_CYL_LOW ATA_IO_REG(4)
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#define ATA_CYL_HIGH ATA_IO_REG(5)
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#define ATA_DEV_HD ATA_IO_REG(6)
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#define ATA_COMMAND ATA_IO_REG(7)
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#define ATA_DATA_EVEN ATA_IO_REG(8)
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#define ATA_DATA_ODD ATA_IO_REG(9)
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#define ATA_STATUS ATA_COMMAND
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#define ATA_DEV_CTL ATA_IO_ALT(6)
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#define ATA_LBA_LOW ATA_SECT_NUM
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#define ATA_LBA_MID ATA_CYL_LOW
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#define ATA_LBA_HIGH ATA_CYL_HIGH
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#define ATA_LBA_SEL ATA_DEV_CTL
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/*
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* Status register bits
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*/
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#define ATA_STAT_BUSY 0x80 /* Device Busy */
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#define ATA_STAT_READY 0x40 /* Device Ready */
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#define ATA_STAT_FAULT 0x20 /* Device Fault */
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#define ATA_STAT_SEEK 0x10 /* Device Seek Complete */
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#define ATA_STAT_DRQ 0x08 /* Data Request (ready) */
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#define ATA_STAT_CORR 0x04 /* Corrected Data Error */
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#define ATA_STAT_INDEX 0x02 /* Vendor specific */
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#define ATA_STAT_ERR 0x01 /* Error */
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/*
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* Device / Head Register Bits
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*/
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#ifndef ATA_DEVICE
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#define ATA_DEVICE(x) ((x & 1)<<4)
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#endif /* ATA_DEVICE */
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#define ATA_LBA 0xE0
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/*
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* ATA Commands (only mandatory commands listed here)
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*/
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#define ATA_CMD_READ 0x20 /* Read Sectors (with retries) */
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#define ATA_CMD_READN 0x21 /* Read Sectors ( no retries) */
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#define ATA_CMD_WRITE 0x30 /* Write Sectores (with retries)*/
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#define ATA_CMD_WRITEN 0x31 /* Write Sectors ( no retries)*/
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#define ATA_CMD_VRFY 0x40 /* Read Verify (with retries) */
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#define ATA_CMD_VRFYN 0x41 /* Read verify ( no retries) */
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#define ATA_CMD_SEEK 0x70 /* Seek */
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#define ATA_CMD_DIAG 0x90 /* Execute Device Diagnostic */
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#define ATA_CMD_INIT 0x91 /* Initialize Device Parameters */
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#define ATA_CMD_RD_MULT 0xC4 /* Read Multiple */
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#define ATA_CMD_WR_MULT 0xC5 /* Write Multiple */
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#define ATA_CMD_SETMULT 0xC6 /* Set Multiple Mode */
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#define ATA_CMD_RD_DMA 0xC8 /* Read DMA (with retries) */
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#define ATA_CMD_RD_DMAN 0xC9 /* Read DMS ( no retries) */
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#define ATA_CMD_WR_DMA 0xCA /* Write DMA (with retries) */
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#define ATA_CMD_WR_DMAN 0xCB /* Write DMA ( no retires) */
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#define ATA_CMD_IDENT 0xEC /* Identify Device */
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#define ATA_CMD_SETF 0xEF /* Set Features */
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#define ATA_CMD_CHK_PWR 0xE5 /* Check Power Mode */
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#define ATA_CMD_READ_EXT 0x24 /* Read Sectors (with retries) with 48bit addressing */
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#define ATA_CMD_WRITE_EXT 0x34 /* Write Sectores (with retries) with 48bit addressing */
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#define ATA_CMD_VRFY_EXT 0x42 /* Read Verify (with retries) with 48bit addressing */
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#define ATA_CMD_FLUSH 0xE7 /* Flush drive cache */
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#define ATA_CMD_FLUSH_EXT 0xEA /* Flush drive cache, with 48bit addressing */
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/*
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* ATAPI Commands
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*/
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#define ATAPI_CMD_IDENT 0xA1 /* Identify AT Atachment Packed Interface Device */
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#define ATAPI_CMD_PACKET 0xA0 /* Packed Command */
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#define ATAPI_CMD_INQUIRY 0x12
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#define ATAPI_CMD_REQ_SENSE 0x03
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#define ATAPI_CMD_READ_CAP 0x25
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#define ATAPI_CMD_START_STOP 0x1B
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#define ATAPI_CMD_READ_12 0xA8
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#define ATA_GET_ERR() inb(ATA_STATUS)
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#define ATA_GET_STAT() inb(ATA_STATUS)
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#define ATA_OK_STAT(stat,good,bad) (((stat)&((good)|(bad)))==(good))
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#define ATA_BAD_R_STAT (ATA_STAT_BUSY | ATA_STAT_ERR)
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#define ATA_BAD_W_STAT (ATA_BAD_R_STAT | ATA_STAT_FAULT)
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#define ATA_BAD_STAT (ATA_BAD_R_STAT | ATA_STAT_DRQ)
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#define ATA_DRIVE_READY (ATA_READY_STAT | ATA_STAT_SEEK)
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#define ATA_DATA_READY (ATA_STAT_DRQ)
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#define ATA_BLOCKSIZE 512 /* bytes */
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#define ATA_BLOCKSHIFT 9 /* 2 ^ ATA_BLOCKSIZESHIFT = 512 */
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#define ATA_SECTORWORDS (512 / sizeof(unsigned long))
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#ifndef ATA_RESET_TIME
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#define ATA_RESET_TIME 60 /* spec allows up to 31 seconds */
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#endif
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/* ------------------------------------------------------------------------- */
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/*
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* structure returned by ATA_CMD_IDENT, as per ANSI ATA2 rev.2f spec
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*/
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typedef struct hd_driveid {
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unsigned short config; /* lots of obsolete bit flags */
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unsigned short cyls; /* "physical" cyls */
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unsigned short reserved2; /* reserved (word 2) */
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unsigned short heads; /* "physical" heads */
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unsigned short track_bytes; /* unformatted bytes per track */
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unsigned short sector_bytes; /* unformatted bytes per sector */
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unsigned short sectors; /* "physical" sectors per track */
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unsigned short vendor0; /* vendor unique */
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unsigned short vendor1; /* vendor unique */
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unsigned short vendor2; /* vendor unique */
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unsigned char serial_no[20]; /* 0 = not_specified */
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unsigned short buf_type;
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unsigned short buf_size; /* 512 byte increments; 0 = not_specified */
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unsigned short ecc_bytes; /* for r/w long cmds; 0 = not_specified */
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unsigned char fw_rev[8]; /* 0 = not_specified */
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unsigned char model[40]; /* 0 = not_specified */
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unsigned char max_multsect; /* 0=not_implemented */
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unsigned char vendor3; /* vendor unique */
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unsigned short dword_io; /* 0=not_implemented; 1=implemented */
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unsigned char vendor4; /* vendor unique */
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unsigned char capability; /* bits 0:DMA 1:LBA 2:IORDYsw 3:IORDYsup*/
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unsigned short reserved50; /* reserved (word 50) */
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unsigned char vendor5; /* vendor unique */
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unsigned char tPIO; /* 0=slow, 1=medium, 2=fast */
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unsigned char vendor6; /* vendor unique */
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unsigned char tDMA; /* 0=slow, 1=medium, 2=fast */
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unsigned short field_valid; /* bits 0:cur_ok 1:eide_ok */
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unsigned short cur_cyls; /* logical cylinders */
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unsigned short cur_heads; /* logical heads */
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unsigned short cur_sectors; /* logical sectors per track */
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unsigned short cur_capacity0; /* logical total sectors on drive */
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unsigned short cur_capacity1; /* (2 words, misaligned int) */
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unsigned char multsect; /* current multiple sector count */
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unsigned char multsect_valid; /* when (bit0==1) multsect is ok */
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unsigned int lba_capacity; /* total number of sectors */
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unsigned short dma_1word; /* single-word dma info */
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unsigned short dma_mword; /* multiple-word dma info */
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unsigned short eide_pio_modes; /* bits 0:mode3 1:mode4 */
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unsigned short eide_dma_min; /* min mword dma cycle time (ns) */
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unsigned short eide_dma_time; /* recommended mword dma cycle time (ns) */
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unsigned short eide_pio; /* min cycle time (ns), no IORDY */
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unsigned short eide_pio_iordy; /* min cycle time (ns), with IORDY */
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unsigned short words69_70[2]; /* reserved words 69-70 */
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unsigned short words71_74[4]; /* reserved words 71-74 */
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unsigned short queue_depth; /* */
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unsigned short words76_79[4]; /* reserved words 76-79 */
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unsigned short major_rev_num; /* */
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unsigned short minor_rev_num; /* */
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unsigned short command_set_1; /* bits 0:Smart 1:Security 2:Removable 3:PM */
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unsigned short command_set_2; /* bits 14:Smart Enabled 13:0 zero 10:lba48 support*/
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unsigned short cfsse; /* command set-feature supported extensions */
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unsigned short cfs_enable_1; /* command set-feature enabled */
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unsigned short cfs_enable_2; /* command set-feature enabled */
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unsigned short csf_default; /* command set-feature default */
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unsigned short dma_ultra; /* */
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unsigned short word89; /* reserved (word 89) */
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unsigned short word90; /* reserved (word 90) */
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unsigned short CurAPMvalues; /* current APM values */
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unsigned short word92; /* reserved (word 92) */
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unsigned short hw_config; /* hardware config */
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unsigned short words94_99[6];/* reserved words 94-99 */
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/*unsigned long long lba48_capacity; /--* 4 16bit values containing lba 48 total number of sectors */
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unsigned short lba48_capacity[4]; /* 4 16bit values containing lba 48 total number of sectors */
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unsigned short words104_125[22];/* reserved words 104-125 */
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unsigned short last_lun; /* reserved (word 126) */
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unsigned short word127; /* reserved (word 127) */
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unsigned short dlf; /* device lock function
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* 15:9 reserved
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* 8 security level 1:max 0:high
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* 7:6 reserved
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* 5 enhanced erase
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* 4 expire
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* 3 frozen
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* 2 locked
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* 1 en/disabled
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* 0 capability
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*/
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unsigned short csfo; /* current set features options
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* 15:4 reserved
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* 3 auto reassign
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* 2 reverting
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* 1 read-look-ahead
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* 0 write cache
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*/
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unsigned short words130_155[26];/* reserved vendor words 130-155 */
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unsigned short word156;
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unsigned short words157_159[3];/* reserved vendor words 157-159 */
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unsigned short words160_162[3];/* reserved words 160-162 */
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unsigned short cf_advanced_caps;
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unsigned short words164_255[92];/* reserved words 164-255 */
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} hd_driveid_t;
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/*
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* PIO Mode Configuration
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*
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* See ATA-3 (AT Attachment-3 Interface) documentation, Figure 14 / Table 21
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*/
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typedef struct {
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unsigned int t_setup; /* Setup Time in [ns] or clocks */
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unsigned int t_length; /* Length Time in [ns] or clocks */
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unsigned int t_hold; /* Hold Time in [ns] or clocks */
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}
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pio_config_t;
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#define IDE_MAX_PIO_MODE 4 /* max suppurted PIO mode */
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/* ------------------------------------------------------------------------- */
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#endif /* _ATA_H */
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