2a93cee8e2
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23572 a1c6a512-1295-4272-9138-f99709370657
81 lines
3 KiB
C
81 lines
3 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2007 by Karl Kurbjun
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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
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef ATA_TARGET_H
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#define ATA_TARGET_H
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#if 0
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/* Plain C read & write loops */
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#define PREFER_C_READING
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#define PREFER_C_WRITING
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#else
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/* ASM optimized reading and writing */
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#define ATA_OPTIMIZED_READING
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#define ATA_OPTIMIZED_WRITING
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void copy_read_sectors(const unsigned char* buf, int wordcount);
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void copy_write_sectors(const unsigned char* buf, int wordcount);
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#endif
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#define ATA_IOBASE 0x50000000
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#define REGISTER_OFFSET (ATA_IOBASE+0x00400000) /* A21 = High */
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#define CONTROL_OFFSET (ATA_IOBASE+0x00800000) /* A22 = High */
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#define IDE_SHIFT 17
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#define ATA_DATA (*((volatile unsigned short*)(REGISTER_OFFSET + (0x00 << IDE_SHIFT))))
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#define ATA_ERROR (*((volatile unsigned char*)(REGISTER_OFFSET + (0x01 << IDE_SHIFT))))
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#define ATA_NSECTOR (*((volatile unsigned char*)(REGISTER_OFFSET + (0x02 << IDE_SHIFT))))
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#define ATA_SECTOR (*((volatile unsigned char*)(REGISTER_OFFSET + (0x03 << IDE_SHIFT))))
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#define ATA_LCYL (*((volatile unsigned char*)(REGISTER_OFFSET + (0x04 << IDE_SHIFT))))
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#define ATA_HCYL (*((volatile unsigned char*)(REGISTER_OFFSET + (0x05 << IDE_SHIFT))))
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#define ATA_SELECT (*((volatile unsigned char*)(REGISTER_OFFSET + (0x06 << IDE_SHIFT))))
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#define ATA_COMMAND (*((volatile unsigned char*)(REGISTER_OFFSET + (0x07 << IDE_SHIFT))))
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#define ATA_CONTROL (*((volatile unsigned char*)(CONTROL_OFFSET + (0x06 << IDE_SHIFT))))
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#define STATUS_BSY 0x80
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#define STATUS_RDY 0x40
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#define STATUS_DF 0x20
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#define STATUS_DRQ 0x08
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#define STATUS_ERR 0x01
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#define ERROR_ABRT 0x04
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#define WRITE_PATTERN1 0xa5
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#define WRITE_PATTERN2 0x5a
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#define WRITE_PATTERN3 0xaa
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#define WRITE_PATTERN4 0x55
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#define READ_PATTERN1 0xa5
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#define READ_PATTERN2 0x5a
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#define READ_PATTERN3 0xaa
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#define READ_PATTERN4 0x55
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#define READ_PATTERN1_MASK 0xff
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#define READ_PATTERN2_MASK 0xff
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#define READ_PATTERN3_MASK 0xff
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#define READ_PATTERN4_MASK 0xff
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#define SET_REG(reg,val) reg = (val)
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#define SET_16BITREG(reg,val) reg = (val)
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void ata_reset(void);
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void ata_device_init(void);
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bool ata_is_coldstart(void);
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#endif
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