// This file is part of noxos and licensed under the MIT open source license

#ifndef NOXOS_AHCI_H
#define NOXOS_AHCI_H

#include "utils/stdtypes.h"

typedef enum {
    AHCI_FIS_REGISTER_HOST_TO_DEVICE    = 0x27,     // host  --> device
    AHCI_FIS_REGISTER_DEVICE_TO_HOST    = 0x34,     // host <--  device
    AHCI_FIS_DMA_ACTIVATE               = 0x39,     // host <--  device
    AHCI_FIS_DMA_SETUP                  = 0x41,     // host <--> device
    AHCI_FIS_DATA                       = 0x46,     // host <--> device
    AHCI_FIS_BIST                       = 0x58,     // host <--> device
    AHCI_FIS_PIO_SETUP                  = 0x5F,     // host <--  device
    AHCI_FIS_DEVICE_BITS                = 0xA1      // host <--  device
} ahci_fis_type_E;

typedef struct {
    uint8_t     type;
    uint8_t     port_multiplier:4;
    uint8_t     reserved_0:3;
    uint8_t     command_control_select:1;
    uint8_t     command;
    uint8_t     feature_0;
    uint8_t     lba_0;
    uint8_t     lba_1;
    uint8_t     lba_2;
    uint8_t     device;
    uint8_t     lba_3;
    uint8_t     lba_4;
    uint8_t     lba_5;
    uint8_t     feature_1;
    uint16_t    count;
    uint8_t     icc;
    uint8_t     control;
    uint32_t    reserved_1;
} ahci_fis_register_host_to_device_T;

typedef struct {
    uint8_t     type;
    uint8_t     port_multiplier:4;
    uint8_t     reserved_0:2;
    uint8_t     interrupt:1;
    uint8_t     reserved_1:1;
    uint8_t     status;
    uint8_t     error;
    uint8_t     lba_0;
    uint8_t     lba_1;
    uint8_t     lba_2;
    uint8_t     device;
    uint8_t     lba_3;
    uint8_t     lba_4;
    uint8_t     lba_5;
    uint8_t     reserved_2;
    uint16_t    count;
    uint16_t    reserved_3;
    uint32_t    reserved_4;
} ahci_fis_register_device_to_host_T;

typedef struct {
    uint8_t     type;
    uint8_t     port_multiplier:4;
    uint8_t     reserved_0:4;
    uint16_t    reserved_1;
    uint32_t    data;   // this can be followed by more data
} ahci_fis_data_T;

typedef struct {
    uint8_t     type;
    uint8_t     port_multiplier:4;
    uint8_t     reserved_0:1;
    uint8_t     transfer_direction:1;
    uint8_t     interrupt:1;
    uint8_t     reserved_1:1;
    uint8_t     status;
    uint8_t     error;
    uint8_t     lba_0;
    uint8_t     lba_1;
    uint8_t     lba_2;
    uint8_t     device;
    uint8_t     lba_3;
    uint8_t     lba_4;
    uint8_t     lba_5;
    uint8_t     reserved_2;
    uint16_t    count;
    uint8_t     reserved_3;
    uint8_t     new_status;
    uint16_t    transfer_count;
    uint16_t    reserved_4;
} ahci_fis_pio_setup_T;

typedef struct {
    uint8_t     type;
    uint8_t     port_multiplier:4;
    uint8_t     reserved_0:1;
    uint8_t     transfer_direction:1;
    uint8_t     interrupt:1;
    uint8_t     auto_activate:1;
    uint16_t    reserved_1;
    uint64_t    dma_buffer_id;
    uint32_t    reserved_2;
    uint32_t    dma_buffer_offset;
    uint32_t    transfer_count;
    uint32_t    reserved_3;
} ahci_fis_dma_setup_T;



#endif //NOXOS_AHCI_H