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https://github.com/LIV2/lide.device.git
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105 lines
3.2 KiB
C
105 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* This file is part of lide.device
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* Copyright (C) 2023 Matthew Harlum <matt@harlum.net>
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*/
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#ifndef _ATA_H
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#define _ATA_H
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#include <stdbool.h>
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#include "device.h"
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#include <exec/types.h>
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#define MAX_TRANSFER_SECTORS 256 // Max amount of sectors to transfer per read/write command
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#if MAX_TRANSFER_SECTORS > 256
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#error "MAX_TRANSFER_SECTORS cannot be larger than 256"
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#endif
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#define CHANNEL_0 0x1000
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#define CHANNEL_1 0x2000
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#define NEXT_REG 0x200
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// BYTE Offsets
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#define ata_reg_data 0x000
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#define ata_reg_error 0x200
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#define ata_reg_features 0x200
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#define ata_reg_sectorCount 0x400
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#define ata_reg_lbaLow 0x600
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#define ata_reg_lbaMid 0x800
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#define ata_reg_lbaHigh 0xA00
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#define ata_reg_devHead 0xC00
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#define ata_reg_status 0xE00
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#define ata_reg_command 0xE00
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#define ata_reg_altStatus 0x1C00
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#define drv_sel_secondary (1<<4)
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#define ata_flag_busy (1<<7)
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#define ata_flag_ready (1<<6)
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#define ata_flag_df (1<<5)
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#define ata_flag_drq (1<<3)
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#define ata_flag_error (1<<0)
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#define ata_err_flag_aborted (1<<2)
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#define ATA_CMD_DEVICE_RESET 0x08
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#define ATA_CMD_IDENTIFY 0xEC
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#define ATA_CMD_READ 0x20
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#define ATA_CMD_READ_MULTIPLE 0xC4
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#define ATA_CMD_READ_MULTIPLE_EXT 0x29
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#define ATA_CMD_WRITE 0x30
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#define ATA_CMD_WRITE_MULTIPLE 0xC5
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#define ATA_CMD_WRITE_MULTIPLE_EXT 0x39
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#define ATA_CMD_SET_MULTIPLE 0xC6
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#define ATA_CMD_SET_FEATURES 0xEF
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// Identify data word offsets
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#define ata_identify_cylinders 1
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#define ata_identify_heads 3
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#define ata_identify_sectors 6
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#define ata_identify_serial 10
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#define ata_identify_fw_rev 23
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#define ata_identify_model 27
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#define ata_identify_multiple 47
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#define ata_identify_capabilities 49
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#define ata_identify_logical_sectors 60
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#define ata_identify_pio_modes 64
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#define ata_identify_features 83
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#define ata_identify_lba48_sectors 100
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#define ataf_multiple (1<<8)
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#define ata_capability_lba (1<<9)
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#define ata_capability_dma (1<<8)
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#define ata_feature_lba48 (1<<10)
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enum xfer_dir {
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READ,
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WRITE
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};
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#define ATA_DRQ_WAIT_LOOP_US 1000
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#define ATA_DRQ_WAIT_S 5
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#define ATA_DRQ_WAIT_COUNT (ATA_DRQ_WAIT_S * 1000 * (1000 / ATA_DRQ_WAIT_LOOP_US))
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#define ATA_BSY_WAIT_LOOP_US 1000
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#define ATA_BSY_WAIT_S 10
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#define ATA_BSY_WAIT_COUNT (ATA_BSY_WAIT_S * 1000 * (1000 / ATA_BSY_WAIT_LOOP_US))
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#define ATA_RDY_WAIT_LOOP_US 1000
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#define ATA_RDY_WAIT_S 3
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#define ATA_RDY_WAIT_COUNT (ATA_RDY_WAIT_S * 1000 * (1000 / ATA_RDY_WAIT_LOOP_US))
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bool ata_init_unit(struct IDEUnit *);
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bool ata_select(struct IDEUnit *unit, UBYTE select, bool wait);
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bool ata_identify(struct IDEUnit *, UWORD *);
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bool ata_set_multiple(struct IDEUnit *unit, BYTE multiple);
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void ata_set_xfer(struct IDEUnit *unit, enum xfer method);
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BYTE ata_read(void *buffer, ULONG lba, ULONG count, struct IDEUnit *unit);
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BYTE ata_write(void *buffer, ULONG lba, ULONG count, struct IDEUnit *unit);
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BYTE ata_set_pio(struct IDEUnit *unit, UBYTE pio);
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BYTE scsi_ata_passthrough( struct IDEUnit *unit, struct SCSICmd *cmd);
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void ata_read_unaligned_long(void *source, void *destination);
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void ata_write_unaligned_long(void *source, void *destination);
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#endif |