mirror of
https://github.com/LIV2/lide.device.git
synced 2025-12-06 00:32:45 +00:00
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/* This file is part of liv2ride.device
|
|
* Copyright (C) 2023 Matthew Harlum <matt@harlum.net>
|
|
*/
|
|
#ifndef _ATA_H
|
|
#define _ATA_H
|
|
|
|
#include <stdbool.h>
|
|
#include "device.h"
|
|
#include <exec/types.h>
|
|
|
|
#define MAX_TRANSFER_SECTORS 255 // Max amount of sectors to transfer per read/write command
|
|
#if MAX_TRANSFER_SECTORS > 256
|
|
#error "MAX_TRANSFER_SECTORS cannot be larger than 256"
|
|
#endif
|
|
|
|
#define CHANNEL_0 0x1000
|
|
#define CHANNEL_1 0x2000
|
|
#define NEXT_REG 0x200
|
|
|
|
// BYTE Offsets
|
|
#define ata_reg_data 0x000
|
|
#define ata_reg_error 0x200
|
|
#define ata_reg_features 0x200
|
|
#define ata_reg_sectorCount 0x400
|
|
#define ata_reg_lbaLow 0x600
|
|
#define ata_reg_lbaMid 0x800
|
|
#define ata_reg_lbaHigh 0xA00
|
|
#define ata_reg_devHead 0xC00
|
|
#define ata_reg_status 0xE00
|
|
#define ata_reg_command 0xE00
|
|
|
|
#define drv_sel_secondary (1<<4)
|
|
|
|
#define ata_flag_busy (1<<7)
|
|
#define ata_flag_ready (1<<6)
|
|
#define ata_flag_df (1<<5)
|
|
#define ata_flag_drq (1<<3)
|
|
#define ata_flag_error (1<<0)
|
|
|
|
#define ata_err_flag_aborted (1<<2)
|
|
|
|
#define ATA_CMD_IDENTIFY 0xEC
|
|
#define ATA_CMD_READ 0x20
|
|
#define ATA_CMD_WRITE 0x30
|
|
// Identify data word offsets
|
|
#define ata_identify_cylinders 1
|
|
#define ata_identify_heads 3
|
|
#define ata_identify_sectors 6
|
|
#define ata_identify_serial 10
|
|
#define ata_identify_fw_rev 23
|
|
#define ata_identify_model 27
|
|
#define ata_identify_capabilities 49
|
|
#define ata_identify_logical_sectors 60
|
|
#define ata_identify_pio_modes 64
|
|
|
|
#define ata_identify_lls_bit (1<<13)
|
|
|
|
|
|
#define ata_capability_lba (1<<9)
|
|
#define ata_capability_dma (1<<8)
|
|
|
|
enum xfer_dir {
|
|
READ,
|
|
WRITE
|
|
};
|
|
|
|
bool ata_wait_not_busy(struct IDEUnit *unit);
|
|
bool ata_wait_ready(struct IDEUnit *unit);
|
|
bool ata_wait_drq(struct IDEUnit *unit);
|
|
|
|
|
|
bool ata_init_unit(struct IDEUnit *);
|
|
bool ata_identify(struct IDEUnit *, UWORD *);
|
|
BYTE ata_transfer(void *buffer, ULONG lba, ULONG count, ULONG *actual, struct IDEUnit *unit, enum xfer_dir direction);
|
|
static void ata_read_fast (void *, void *);
|
|
static void ata_write_fast (void *, void *);
|
|
#endif |