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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 by Karl Kurbjun
*
* 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
#if 0
/* Plain C read & write loops */
#define PREFER_C_READING
#define PREFER_C_WRITING
#else
/* ASM optimized reading and writing */
#define ATA_OPTIMIZED_READING
#define ATA_OPTIMIZED_WRITING
void copy_read_sectors(const unsigned char* buf, int wordcount);
void copy_write_sectors(const unsigned char* buf, int wordcount);
#endif
#define ATA_IOBASE 0x50000000
#define REGISTER_OFFSET (ATA_IOBASE+0x00400000) /* A21 = High */
#define CONTROL_OFFSET (ATA_IOBASE+0x00800000) /* A22 = High */
#define IDE_SHIFT 17
#define ATA_DATA (*((volatile unsigned short*)(REGISTER_OFFSET + (0x00 << IDE_SHIFT))))
#define ATA_ERROR (*((volatile unsigned char*)(REGISTER_OFFSET + (0x01 << IDE_SHIFT))))
#define ATA_NSECTOR (*((volatile unsigned char*)(REGISTER_OFFSET + (0x02 << IDE_SHIFT))))
#define ATA_SECTOR (*((volatile unsigned char*)(REGISTER_OFFSET + (0x03 << IDE_SHIFT))))
#define ATA_LCYL (*((volatile unsigned char*)(REGISTER_OFFSET + (0x04 << IDE_SHIFT))))
#define ATA_HCYL (*((volatile unsigned char*)(REGISTER_OFFSET + (0x05 << IDE_SHIFT))))
#define ATA_SELECT (*((volatile unsigned char*)(REGISTER_OFFSET + (0x06 << IDE_SHIFT))))
#define ATA_COMMAND (*((volatile unsigned char*)(REGISTER_OFFSET + (0x07 << IDE_SHIFT))))
#define ATA_CONTROL (*((volatile unsigned char*)(CONTROL_OFFSET + (0x06 << IDE_SHIFT))))
void ata_reset(void);
void ata_device_init(void);
bool ata_is_coldstart(void);
#endif
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