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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2011 by Boris Gjenero
*
* 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_DRIVER_H__
#define __ATA_DRIVER_H__
#include "config.h" /* for HAVE_ATA_DMA */
#include "ata-target.h" /* for other target-specific defines */
/* Returns true if the interface hasn't been initialised yet */
bool ata_is_coldstart(void) STORAGE_INIT_ATTR;
/* Initializes the interface */
void ata_device_init(void) STORAGE_INIT_ATTR;
/* ata_enable(true) is used after ata_device_init() to enable the interface
* ata_enable(false) is used to disable the interface so
* an ATA to USB bridge chip can use it instead.*/
void ata_enable(bool on);
/* ATA hard reset: pulse the RESET pin */
#ifdef HAVE_ATA_POWER_OFF
void ata_reset(void);
#else
void ata_reset(void) STORAGE_INIT_ATTR;
#endif
/* Optional optimized target-specific PIO transfer */
#ifdef ATA_OPTIMIZED_READING
void copy_read_sectors(unsigned char* buf, int wordcount);
#endif
#ifdef ATA_OPTIMIZED_WRITING
void copy_write_sectors(const unsigned char* buf, int wordcount);
#endif
/* Optional target-specific waiting */
#ifdef ATA_TARGET_POLLING
int ata_wait_for_bsy(void);
int ata_wait_for_rdy(void);
#endif
/* Optional setting of controller timings for PIO mode */
#ifdef ATA_SET_PIO_TIMING
void ata_set_pio_timings(int mode);
#endif
#ifdef HAVE_ATA_DMA
/* Used to update last disk activity time while waiting for DMA */
void ata_keep_active(void);
/* Set DMA mode for ATA interface */
void ata_dma_set_mode(unsigned char mode);
/* Sets up DMA transfer */
bool ata_dma_setup(void *addr, unsigned long bytes, bool write);
/* Waits for DMA transfer completion */
bool ata_dma_finish(void);
#endif /* HAVE_ATA_DMA */
#endif /* __ATA_DRIVER_H__ */
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