19425909c3
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17337 a1c6a512-1295-4272-9138-f99709370657
71 lines
2.5 KiB
C
71 lines
2.5 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) 2006 by Linus Nielsen Feltzing
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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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/* asm optimised read & write loops */
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#define ATA_OPTIMIZED_READING
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#define ATA_OPTIMIZED_WRITING
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#define ATA_IOBASE 0x20000000
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#define ATA_DATA (*((volatile unsigned short*)(ATA_IOBASE + 0x20)))
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#define ATA_CONTROL (*((volatile unsigned short*)(ATA_IOBASE + 0x1c)))
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#define ATA_ERROR (*((volatile unsigned short*)(ATA_IOBASE + 0x22)))
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#define ATA_NSECTOR (*((volatile unsigned short*)(ATA_IOBASE + 0x24)))
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#define ATA_SECTOR (*((volatile unsigned short*)(ATA_IOBASE + 0x26)))
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#define ATA_LCYL (*((volatile unsigned short*)(ATA_IOBASE + 0x28)))
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#define ATA_HCYL (*((volatile unsigned short*)(ATA_IOBASE + 0x2a)))
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#define ATA_SELECT (*((volatile unsigned short*)(ATA_IOBASE + 0x2c)))
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#define ATA_COMMAND (*((volatile unsigned short*)(ATA_IOBASE + 0x2e)))
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#define STATUS_BSY 0x8000
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#define STATUS_RDY 0x4000
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#define STATUS_DF 0x2000
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#define STATUS_DRQ 0x0800
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#define STATUS_ERR 0x0100
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#define ERROR_ABRT 0x0400
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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 0xa500
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#define READ_PATTERN2 0x5a00
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#define READ_PATTERN3 0xaa00
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#define READ_PATTERN4 0x5500
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#define READ_PATTERN1_MASK 0xff00
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#define READ_PATTERN2_MASK 0xff00
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#define READ_PATTERN3_MASK 0xff00
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#define READ_PATTERN4_MASK 0xff00
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#define SET_REG(reg,val) reg = ((val) << 8)
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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_enable(bool on);
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void ata_device_init(void);
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bool ata_is_coldstart(void);
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void copy_read_sectors(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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