idereg.h

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/*
** idereg.h for  in /root/research/lseosr2/programs/ide
** 
** Copyright (c)2004 Julien Quintard
** Login   <quinta_j@epita.fr>
** 
** Started on  Tue Mar  9 11:41:38 2004 Julien Quintard
** Last update Mon Dec  6 12:23:13 2004 Vianney Rancurel
*/
#ifndef __IDEREG_H__
#define __IDEREG_H__       1
#include <libc.h>

/*
 * i/o [1] registers
 */

#define ATA_DATA                        0x00 /* R/W, 16 bits          */

#define ATA_ERR                         0x01 /* R  , error            */
# define ATA_ERR_BBLK                   0x80
# define ATA_ERR_UNC                    0x20
# define ATA_ERR_IDNF                   0x10
# define ATA_ERR_ABRT                   0x04
# define ATA_ERR_TK0NF                  0x02
# define ATA_ERR_AMNF                   0x01

#define ATA_FG                          0x01 /* W  , feature reg      */
#define ATA_SC                          0x02 /* R/W, sector count     */
#define ATA_SN                          0x03 /* R/W, sector number    */
#define ATA_CL                          0x04 /* R/W, low cylinder     */
#define ATA_CH                          0x05 /* R/W, high cylinder    */

#define ATA_DH                          0x06 /* R/W, device head      */
# define ATA_DH_IBM                     0xa0
# define ATA_DH_LBA                     0x40
# define ATA_DH_MASTER                  0x00
# define ATA_DH_SLAVE                   0x10

#define ATA_STAT                        0x07 /* R  , status           */
# define ATA_STAT_BSY                   0x80
# define ATA_STAT_DRDY                  0x40
# define ATA_STAT_DWF                   0x20
# define ATA_STAT_DSC                   0x10
# define ATA_STAT_DRQ                   0x08
# define ATA_STAT_CORR                  0x04
# define ATA_STAT_INDEX                 0x02
# define ATA_STAT_ERR                   0x01

#define ATA_CMD                         0x07 /* W  , command          */
# define ATA_CMD_READ_SECTORS           0x20
# define ATA_CMD_WRITE_SECTORS          0x30
# define ATA_CMD_IDENTIFY               0xec
# define ATA_CMD_IDENTIFY_PACKET_DEVICE 0xa1

/*
 * i/o [2] registers
 */

#define ATA_ASTAT                       0x06 /* R  , alternate status */

#define ATA_DCR                         0x06 /* W  , device control   */
# define ATA_DCR_DEFAULT                0x08
# define ATA_DCR_SRST                   0x04
# define ATA_DCR_NIEN                   0x02

#define ATA_DAR                         0x07 /* R  , device address   */

#endif

---