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imx233: add basic ATA driver

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The current driver only works in PIO mode.

Change-Id: I1cf2eaedcce0172a254c3bab0e1257886226d3a0
This commit is contained in:
Amaury Pouly 2013-06-18 16:39:11 +02:00
parent bbb789120c
commit 0b6198f8a8
3 changed files with 313 additions and 0 deletions
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78
firmware/target/arm/imx233/ata-target.h Normal file
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2013 Amaury Pouly
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef ATA_TARGET_H
#define ATA_TARGET_H
#include "config.h"
#ifdef BOOTLOADER
#define ATA_DRIVER_CLOSE
#endif
#ifdef HAVE_ATA_DMA
/* FIXME does this chips does MWDMA ? */
#define ATA_MAX_MWDMA 2
#define ATA_MAX_UDMA 4
#endif
uint8_t imx233_ata_inb(unsigned reg);
uint16_t imx233_ata_inw(unsigned reg);
void imx233_ata_outb(unsigned reg, uint8_t v);
void imx233_ata_outw(unsigned reg, uint16_t v);
#define IMX233_ATA_REG(cs,addr) ((cs) << 3 | (addr))
#define IMX233_ATA_REG_CS(reg) ((reg) >> 3)
#define IMX233_ATA_REG_ADDR(reg) ((reg) & 0x7)
/* use register address (see ATA spec) */
#define ATA_DATA IMX233_ATA_REG(0, 0)
#define ATA_ERROR IMX233_ATA_REG(0, 1)
#define ATA_NSECTOR IMX233_ATA_REG(0, 2)
#define ATA_SECTOR IMX233_ATA_REG(0, 3)
#define ATA_LCYL IMX233_ATA_REG(0, 4)
#define ATA_HCYL IMX233_ATA_REG(0, 5)
#define ATA_SELECT IMX233_ATA_REG(0, 6)
#define ATA_COMMAND IMX233_ATA_REG(0, 7)
#define ATA_CONTROL IMX233_ATA_REG(1, 6)
/* keep consistent with definition of IMX233_ATA_REG */
#define ATA_OUT8(reg, data) imx233_ata_outb(reg, data)
#define ATA_OUT16(reg, data) imx233_ata_outw(reg, data)
#define ATA_IN8(reg) imx233_ata_inb(reg)
#define ATA_IN16(reg) imx233_ata_inw(reg)
#define ATA_SET_PIO_TIMING
#define ATA_TARGET_POLLING
void ata_set_pio_timings(int mode);
void ata_reset(void);
void ata_enable(bool on);
bool ata_is_coldstart(void);
#ifdef HAVE_ATA_DMA
void ata_dma_set_mode(unsigned char mode);
bool ata_dma_setup(void *addr, unsigned long bytes, bool write);
bool ata_dma_finish(void);
#endif
int ata_wait_for_bsy(void);
int ata_wait_for_rdy(void);
void ata_device_init(void);
#endif /* ATA_TARGET_H */