bbe5845f04
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31532 a1c6a512-1295-4272-9138-f99709370657
88 lines
3 KiB
C
88 lines
3 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2006 by Barry Wardell
|
|
*
|
|
* 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 HAVE_BOOTLOADER_USB_MODE
|
|
#define ATA_DRIVER_CLOSE
|
|
#endif
|
|
|
|
/* primary channel */
|
|
#define ATA_DATA (*((volatile unsigned short*)(IDE_BASE + 0x1e0)))
|
|
#define ATA_ERROR (*((volatile unsigned char*)(IDE_BASE + 0x1e4)))
|
|
#define ATA_NSECTOR (*((volatile unsigned char*)(IDE_BASE + 0x1e8)))
|
|
#define ATA_SECTOR (*((volatile unsigned char*)(IDE_BASE + 0x1ec)))
|
|
#define ATA_LCYL (*((volatile unsigned char*)(IDE_BASE + 0x1f0)))
|
|
#define ATA_HCYL (*((volatile unsigned char*)(IDE_BASE + 0x1f4)))
|
|
#define ATA_SELECT (*((volatile unsigned char*)(IDE_BASE + 0x1f8)))
|
|
#define ATA_COMMAND (*((volatile unsigned char*)(IDE_BASE + 0x1fc)))
|
|
#define ATA_CONTROL (*((volatile unsigned char*)(IDE_BASE + 0x3f8)))
|
|
|
|
#if (CONFIG_CPU == PP5002)
|
|
|
|
#define ATA_OUT8(reg,val) do { reg = (val); \
|
|
while (!(IDE_CFG_STATUS & 0x40)); \
|
|
} while (0)
|
|
|
|
/* Plain C reading and writing. See comment in ata-as-arm.S */
|
|
|
|
#elif defined CPU_PP502x
|
|
|
|
/* asm optimized reading and writing */
|
|
#define ATA_OPTIMIZED_READING
|
|
#define ATA_OPTIMIZED_WRITING
|
|
|
|
#endif /* CONFIG_CPU */
|
|
|
|
#ifdef HAVE_ATA_DMA
|
|
|
|
/* IDE DMA controller registers */
|
|
#define IDE_DMA_CONTROL (*(volatile unsigned long *)(0xc3000400))
|
|
#define IDE_DMA_LENGTH (*(volatile unsigned long *)(0xc3000408))
|
|
#define IDE_DMA_ADDR (*(volatile unsigned long *)(0xc300040C))
|
|
|
|
/* Maximum multi-word DMA mode supported by the controller */
|
|
#define ATA_MAX_MWDMA 2
|
|
|
|
#ifndef BOOTLOADER
|
|
/* The PP5020 supports UDMA 4, but it needs cpu boosting and only
|
|
* improves performance by ~10% with a stock disk.
|
|
* UDMA 2 is stable at 30 Mhz.
|
|
* UDMA 1 is stable at 24 Mhz.
|
|
*/
|
|
#if CPUFREQ_NORMAL >= 30000000
|
|
#define ATA_MAX_UDMA 2
|
|
#elif CPUFREQ_NORMAL >= 24000000
|
|
#define ATA_MAX_UDMA 1
|
|
#else
|
|
#error "CPU speeds under 24Mhz have not been tested with DMA"
|
|
#endif
|
|
#else
|
|
/* The bootloader runs at 24 Mhz and needs a slower mode */
|
|
#define ATA_MAX_UDMA 1
|
|
#endif
|
|
|
|
#endif /* HAVE_ATA_DMA */
|
|
|
|
#endif /* ATA_TARGET_H */
|