RockOS/kernel/drivers/atapi/ata.h

#ifndef KATA_H
#define KATA_H

#ifndef __ASSEMBLER__
#include <stdint.h>
#endif

#define IDE_PRIMARY_IO_BASE 0x01F0
#define IDE_PRIMARY_CRTL_BASE 0x03F6

#define IDE_SECONDARY_IO_BASE 0x0170
#define IDE_SECONDARY_CRTL_BASE 0x0376

#define IDE_DRIVE_MASTER 0xA0
#define IDE_DRIVE_SLAVE 0xB0

#define IO_DATA_REG 0x0000
#define IO_ERROR_REG 0x0001
#define IO_FEATURE_REG 0x0001
#define IO_SECTOR_COUNT_REG 0x0002
#define IO_SECTOR_NUM_REG 0x0003 
#define IO_LBA_LO_REG 0x0003
#define IO_CYL_LO_REG 0x0004
#define IO_LBA_MID_REG 0x0004
#define IO_LBA_HI_REG 0x0005
#define IO_CYL_HI_REG 0x0005
#define IO_DRIVE_SELECT_REG 0x0006
#define IO_STATUS_REG 0x0007
#define IO_CMD_REG 0x0007

#define CTRL_ALT_STATUS_REG 0x00
#define CTRL_DEV_CTRL_REG 0x00
#define CTRL_DRIVE_ADDR_REG 0x01

#define ERROR_REG_AMNF  0b00000001  // Address mark not found
#define ERROR_REG_TKZNF 0b00000010  // Track zero not found
#define ERROR_REG_ABRT  0b00000100  // Aborted command
#define ERROR_REG_MCR   0b00001000  // Media change request
#define ERROR_REG_IDNF  0b00010000  // ID not found
#define ERROR_REG_MC    0b00100000  // Media changed
#define ERROR_REG_UNC   0b01000000  // Uncorrectable data error
#define ERROR_REG_BBK   0b10000000  // Bad Block detected

#define DRIVE_SELECT_REG_BN     0b00000111
#define DRIVE_SELECT_REG_DRV    0b00010000
#define DRIVE_SELECT_REG_LBAA   0b01000000

#define STATUS_REG_ERR  0b00000001
#define STATUS_REG_IDX  0b00000010
#define STATUS_REG_CORR 0b00000100
#define STATUS_REG_DRQ  0b00001000
#define STATUS_REG_SRV  0b00010000
#define STATUS_REG_DF   0b00100000
#define STATUS_REG_RDY  0b01000000
#define STATUS_REG_BSY  0b10000000

#define DEV_CTRL_REG_nIEN   0b00000001
#define DEV_CTRL_REG_SRST   0b00000010
#define DEV_CTRL_REG_HOB    0b10000000

#define DRIVE_ADDR_REG_DS0      0b00000001
#define DRIVE_ADDR_REG_DS1      0b00000010
#define DRIVE_ADDR_REG_HEAD     0b00111100
#define DRIVE_ADDR_REG_WTG      0b01000000

#define ATAPI_CMD_IDENTIFY_PACKET 0xA1

#ifndef __ASSEMBLER__
uint8_t ident_device(uint16_t bus, uint8_t drive_select, uint8_t* buffer);

typedef struct __attribute__((packed)) {
    uint16_t bus;
    uint8_t device;
    uint8_t type;
    void* ident_info_struct;
} ide_device_t;

typedef struct __attribute__((packed)) {
    uint16_t gen_config;
    uint16_t reserved_1[9];
    char serial_number[20];
    uint16_t vendor_1[3];
    char firmware_v[8];
    char model_num[40];
    uint16_t vendor_2[2];
    uint16_t capabilities;
    uint16_t reserved_2;
    uint16_t pio_dma_timing;
} atapi_identify_data_t;

#endif

#endif