matos/drivers/ata.h

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#pragma once
#include "stdarg.h"
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#define ATA_PIO_DATA 0
#define ATA_PIO_ERR 1
#define ATA_PIO_FEAT 1
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#define ATA_PIO_SEC_COUNT 2
#define ATA_PIO_LBALO 3
#define ATA_PIO_LBAMID 4
#define ATA_PIO_CYL_LOW 4
#define ATA_PIO_LBAHI 5
#define ATA_PIO_CYL_HI 5
#define ATA_PIO_DRIVE 6
#define ATA_PIO_STATUS 7
#define ATA_PIO_CMD 7
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// cmd details
// https://people.freebsd.org/~imp/asiabsdcon2015/works/d2161r5-ATAATAPI_Command_Set_-_3.pdf
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#define ATA_PIO_CMD_IDENTIFY 0xEC
#define ATA_PIO_ERROR_ADDR_MARK_NOT_FOUND 0
#define ATA_PIO_ERROR_TRACK_ZERO_NOT_FOUND 1
#define ATA_PIO_ERROR_ABORTED 2
#define ATA_PIO_ERROR_MEDIA_CHANGE_REQUEST 3
#define ATA_PIO_ERROR_ID_NOT_FOUND 4
#define ATA_PIO_ERROR_MEDIA_CHANGED 5
#define ATA_PIO_ERROR_UNCORRECTABLE_DATA 6
#define ATA_PIO_ERROR_BAD_BLOCK 7
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#define ATA_PIO_STATUS_REG_ERR (1 << 0)
#define ATA_PIO_STATUS_IDX (1 << 1)
#define ATA_PIO_STATUS_CORP (1 << 2)
#define ATA_PIO_STATUS_DRQ (1 << 3)
#define ATA_PIO_STATUS_SRV (1 << 4)
#define ATA_PIO_STATUS_DRIVE_FAULT (1 << 5)
#define ATA_PIO_STATUS_DRIVE_RDY (1 << 6)
#define ATA_PIO_STATUS_DRIVE_BUSY (1 << 7)
#define MAX_ATA_CONTROLLER 2
#define MAX_ATA_DEVICES 2
#define DISK_SECTOR_SIZE 512
typedef enum {
ATA_DEV_UNKNOWN,
ATA_DEV_PATA,
ATA_DEV_SATA,
ATA_DEV_PATAPI,
ATA_DEV_SATAPI
} ata_type;
struct ata_device {
int id;
ata_type type;
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int isSlave;
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struct ata_controller *ctl;
int heads;
int cyls;
int sectors;
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};
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struct ata_controller {
int id;
int16_t base;
int16_t dev_ctl;
int present;
struct ata_device devices[MAX_ATA_DEVICES];
};
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int ATAInit();