109 lines
3.0 KiB
C
109 lines
3.0 KiB
C
#pragma once
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#include "stdarg.h"
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#include "synchro.h"
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#define ATA_PIO_DATA 0
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#define ATA_PIO_ERR 1
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#define ATA_PIO_FEAT 1
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#define ATA_PIO_SEC_COUNT 2
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#define ATA_PIO_LBALO 3
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#define ATA_PIO_LBAMID 4
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#define ATA_PIO_CYL_LOW 4
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#define ATA_PIO_LBAHI 5
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#define ATA_PIO_CYL_HI 5
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#define ATA_PIO_DRIVE 6
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#define ATA_PIO_STATUS 7
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#define ATA_PIO_CMD 7
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// cmd details
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// https://people.freebsd.org/~imp/asiabsdcon2015/works/d2161r5-ATAATAPI_Command_Set_-_3.pdf
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#define ATA_PIO_CMD_IDENTIFY 0xEC /* get ATA params */
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#define ATA_PIO_CMD_ATAPI_IDENTIFY 0xA1 /* get ATAPI params*/
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#define ATA_PIO_CMD_READ 0x20 /* read command */
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#define ATA_PIO_CMD_WRITE 0x30 /* write command */
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#define ATA_PIO_CMD_READ_MULTI 0xC4 /* read multi command */
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#define ATA_PIO_CMD_WRITE_MULTI 0xC5 /* write multi command */
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#define ATA_PIO_CMD_SET_MULTI 0xC6 /* set multi size command */
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#define ATA_PIO_CMD_PACKET_CMD 0xA0 /* set multi size command */
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#define ATA_PIO_DRIVE_IBM 0xA0 /* bits that must be set */
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#define ATA_PIO_DRIVE_LBA 0x40 /* use LBA ? */
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#define ATA_PIO_DRIVE_MASTER 0x00 /* select master */
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#define ATA_PIO_DRIVE_SLAVE 0x10 /* select slave */
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#define ATA_PIO_ERROR_ADDR_MARK_NOT_FOUND 0
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#define ATA_PIO_ERROR_TRACK_ZERO_NOT_FOUND 1
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#define ATA_PIO_ERROR_ABORTED 2
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#define ATA_PIO_ERROR_MEDIA_CHANGE_REQUEST 3
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#define ATA_PIO_ERROR_ID_NOT_FOUND 4
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#define ATA_PIO_ERROR_MEDIA_CHANGED 5
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#define ATA_PIO_ERROR_UNCORRECTABLE_DATA 6
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#define ATA_PIO_ERROR_BAD_BLOCK 7
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#define ATA_PIO_STATUS_REG_ERR (1 << 0)
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#define ATA_PIO_STATUS_IDX (1 << 1)
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#define ATA_PIO_STATUS_CORP (1 << 2)
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#define ATA_PIO_STATUS_DRQ (1 << 3)
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#define ATA_PIO_STATUS_SRV (1 << 4)
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#define ATA_PIO_STATUS_DRIVE_FAULT (1 << 5)
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#define ATA_PIO_STATUS_DRIVE_RDY (1 << 6)
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#define ATA_PIO_STATUS_DRIVE_BUSY (1 << 7)
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#define MAX_ATA_CONTROLLER 2
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#define MAX_ATA_DEVICES 2
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#define DISK_SECTOR_SIZE 512
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#define PART_TYPE_EXTENDED 0x5
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#define PART_TYPE_FAT16 0x6
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#define PART_TYPE_FAT16_LBA 0xe
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#define PART_TYPE_FAT32 0xb
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#define PART_TYPE_FAT32_LBA 0xc
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#define PART_TYPE_LINUX_SWAP 0x82
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#define PART_TYPE_LINUX 0x83
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typedef enum {
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ATA_DEV_UNKNOWN,
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ATA_DEV_PATA,
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ATA_DEV_SATA,
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ATA_DEV_PATAPI,
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ATA_DEV_SATAPI
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} ata_type;
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struct ata_device {
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int id;
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ata_type type;
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int isSlave;
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struct ata_controller *ctl;
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int heads;
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int cyls;
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int sectors;
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};
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struct ata_controller {
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int id;
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int16_t base;
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int16_t dev_ctl;
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int present;
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struct ata_device devices[MAX_ATA_DEVICES];
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struct mutex mutex;
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int last_device_used;
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};
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struct ata_partition {
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int id;
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uint type;
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uint size;
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uint32_t lba;
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struct ata_device *device;
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struct ata_partition *prev, *next;
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};
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int ATAInit();
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int ATAReadPartitionSector(struct ata_partition *part, int offset, uint nbSector, void *buf);
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int ATAReadSector(struct ata_device *dev, int lba, uint nbSector, void *buf);
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int ATAWriteSector(struct ata_device *dev, int lba, uint nbSector, void *buf);
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struct ata_device *ATAGetDevice(int ctlId, int devId);
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int ATAReadPartition(struct ata_device *dev);
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struct ata_partition *ATAGetPartition(int id);
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