ata.h

TI的DM6446的硬件平台搭建的相关例子

/*
 *  Copyright 2005 by Spectrum Digital Incorporated.
 *  All rights reserved. Property of Spectrum Digital Incorporated.
 *
 *  Not for distribution.
 */

/*
 * ATA HDD Test
 */

#include "davincievm.h"
#include "davincievm_gpio_exp.h"
#include "davincievm_msp430.h"

/*
 *  Note: The variables: ata_prd_table
 *        must be located in a memory space accessible by the ATA DMA.
 *        If the memory location is not in a accessible location, the ATA DMA
 *        cannot function correctly, and does not send or receive data.
 *
 *        The DDR2 and AEMIF are both accessible to the ATA DMA.  More locations
 *        can be found in the DaVinci System's Guide under the Memory map section.
 *        There it is detailed what memory locations can be viewed by all periphearls.
 *
 */

/* ------------------------------------------------------------------------ *
 *  ATA DMA PRD variable                                                    *
 * ------------------------------------------------------------------------ */
extern Uint32* ata_prd_word0;   // Physical Region Descriptor ( PRD ) Table
extern Uint32* ata_prd_word1;   // PRD - EOT & Byte Count

#define ATA_PRD_TABLE           ( ( Uint32 )ata_prd_word0 )

/* ------------------------------------------------------------------------ *
 *  ATA Command Codes                                                       *
 * ------------------------------------------------------------------------ */
#define ATA_READ_SECTOR         0x20
#define ATA_WRITE_SECTOR        0x30

#define ATA_READ_DMA            0xC8
#define ATA_WRITE_DMA           0xCA

#define ATA_IDENTIFY_DEVICE     0xEC
#define ATA_SET_FEATURE         0xEF

/* ------------------------------------------------------------------------ *
 *  ATA Command Codes                                                       *
 * ------------------------------------------------------------------------ */
#define PIO_MODE_DEFAULT        0x00

#define PIO_MODE_NO_IORDY       0x01

#define PIO_MODE                0x08
#define PIO_MODE_0              0x00
#define PIO_MODE_1              ( PIO_MODE + 1 )
#define PIO_MODE_2              ( PIO_MODE + 2 )
#define PIO_MODE_3              ( PIO_MODE + 3 )
#define PIO_MODE_4              ( PIO_MODE + 4 )

#define MULTIWORD_DMA_MODE      0x20
#define MULTIWORD_DMA_MODE_0    ( MULTIWORD_DMA_MODE + 0 )
#define MULTIWORD_DMA_MODE_1    ( MULTIWORD_DMA_MODE + 1 )
#define MULTIWORD_DMA_MODE_2    ( MULTIWORD_DMA_MODE + 2 )

#define ULTRA_DMA_MODE          0x40
#define ULTRA_DMA_MODE_0        ( ULTRA_DMA_MODE + 0 )
#define ULTRA_DMA_MODE_1        ( ULTRA_DMA_MODE + 1 )
#define ULTRA_DMA_MODE_2        ( ULTRA_DMA_MODE + 2 )
#define ULTRA_DMA_MODE_3        ( ULTRA_DMA_MODE + 3 )
#define ULTRA_DMA_MODE_4        ( ULTRA_DMA_MODE + 4 )
#define ULTRA_DMA_MODE_5        ( ULTRA_DMA_MODE + 5 )
#define ULTRA_DMA_MODE_6        ( ULTRA_DMA_MODE + 6 )

/* ------------------------------------------------------------------------ *
 *  Prototypes                                                              *
 * ------------------------------------------------------------------------ */
Int16 ATA_init( );
Int16 ATA_changeMode( Uint8 ata_mode );

Int16 ATA_issueCommand( Uint8 command, Uint32 sector );
Int16 ATA_setfeature( Uint8 command, Uint8 options );

Int16 ATA_readId( Uint32 dst );
Int16 ATA_identify( Uint8* buffer );

Int16 ATA_readSector( Uint32 src, Uint32 dst, Uint32 count );
Int16 ATA_readSectorDma( Uint32 src, Uint32 dst, Uint32 count, Uint32 timeout  );
Int16 ATA_writeSector( Uint32 src, Uint32 dst, Uint32 count );
Int16 ATA_writeSectorDma( Uint32 src, Uint32 dst, Uint32 count, Uint32 timeout );