alexvoste
77 lines
2.0 KiB
C
77 lines
2.0 KiB
C
#ifndef ATA_H
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#define ATA_H
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#define ATA_PRIMARY_IO 0x1F0
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#define ATA_PRIMARY_CTRL 0x3F6
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#define ATA_SECONDARY_IO 0x170
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#define ATA_SECONDARY_CTRL 0x376
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#define ATA_REG_DATA 0x00
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#define ATA_REG_ERROR 0x01
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#define ATA_REG_FEATURES 0x01
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#define ATA_REG_SECCOUNT 0x02
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#define ATA_REG_LBA_LO 0x03
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#define ATA_REG_LBA_MID 0x04
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#define ATA_REG_LBA_HI 0x05
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#define ATA_REG_DRIVE 0x06
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#define ATA_REG_STATUS 0x07
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#define ATA_REG_COMMAND 0x07
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#define ATA_REG_ALT_STATUS 0x00
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#define ATA_REG_DEV_CTRL 0x00
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#define ATA_SR_BSY 0x80
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#define ATA_SR_DRDY 0x40
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#define ATA_SR_DF 0x20
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#define ATA_SR_DSC 0x10
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#define ATA_SR_DRQ 0x08
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#define ATA_SR_CORR 0x04
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#define ATA_SR_IDX 0x02
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#define ATA_SR_ERR 0x01
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#define ATA_CMD_READ_PIO 0x20
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#define ATA_CMD_READ_PIO_EXT 0x24
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#define ATA_CMD_WRITE_PIO 0x30
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#define ATA_CMD_WRITE_PIO_EXT 0x34
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#define ATA_CMD_CACHE_FLUSH 0xE7
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#define ATA_CMD_CACHE_FLUSH_EXT 0xEA
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#define ATA_CMD_IDENTIFY 0xEC
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#define ATA_CMD_IDENTIFY_PACKET 0xA1
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#define ATA_DRIVE_MASTER 0xA0
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#define ATA_DRIVE_SLAVE 0xB0
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#define ATA_LBA_BIT 0x40
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#define ATA_MAX_DRIVES 4
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#define ATA_SECTOR_SIZE 512
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typedef struct {
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bool present;
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bool is_atapi;
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bool lba48;
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uint16_t io_base;
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uint16_t ctrl_base;
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uint8_t drive_select;
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uint8_t irq;
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uint64_t sectors;
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uint64_t size_bytes;
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char model[41];
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char serial[21];
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char firmware[9];
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uint16_t identify[256];
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} ata_drive_t;
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void ata_init(void);
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ata_drive_t *ata_get_drive(int index);
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int ata_get_drive_count(void);
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int ata_read_sectors(ata_drive_t *drive, uint64_t lba, uint32_t count, void *buffer);
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int ata_write_sectors(ata_drive_t *drive, uint64_t lba, uint32_t count, const void *buffer);
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int ata_flush(ata_drive_t *drive);
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#endif |