#define MAX_ATA_CHANNEL 4
typedef enum _sense {
- SENSE_NONE = 0,
- SENSE_NOT_READY = 2,
- SENSE_ILLEGAL_REQUEST = 5,
- SENSE_UNIT_ATTENTION = 6
+ SENSE_NONE = 0,
+ SENSE_NOT_READY = 2,
+ SENSE_ILLEGAL_REQUEST = 5,
+ SENSE_UNIT_ATTENTION = 6
} sense_t ;
typedef enum _asc {
- ASC_INV_FIELD_IN_CMD_PACKET = 0x24,
- ASC_MEDIUM_NOT_PRESENT = 0x3a,
- ASC_SAVING_PARAMETERS_NOT_SUPPORTED = 0x39,
- ASC_LOGICAL_BLOCK_OOR = 0x21
+ ASC_INV_FIELD_IN_CMD_PACKET = 0x24,
+ ASC_MEDIUM_NOT_PRESENT = 0x3a,
+ ASC_SAVING_PARAMETERS_NOT_SUPPORTED = 0x39,
+ ASC_LOGICAL_BLOCK_OOR = 0x21
} asc_t ;
typedef struct {
- unsigned cylinders;
- unsigned heads;
- unsigned sectors;
+ unsigned cylinders;
+ unsigned heads;
+ unsigned sectors;
} device_image_t;
struct interrupt_reason_t {
- unsigned c_d : 1;
- unsigned i_o : 1;
- unsigned rel : 1;
- unsigned tag : 5;
+ unsigned c_d : 1;
+ unsigned i_o : 1;
+ unsigned rel : 1;
+ unsigned tag : 5;
};
struct controller_status {
- rd_bool busy;
- rd_bool drive_ready;
- rd_bool write_fault;
- rd_bool seek_complete;
- rd_bool drq;
- rd_bool corrected_data;
- rd_bool index_pulse;
- unsigned int index_pulse_count;
- rd_bool err;
+ rd_bool busy;
+ rd_bool drive_ready;
+ rd_bool write_fault;
+ rd_bool seek_complete;
+ rd_bool drq;
+ rd_bool corrected_data;
+ rd_bool index_pulse;
+ unsigned int index_pulse_count;
+ rd_bool err;
};
struct sense_info_t {
- sense_t sense_key;
+ sense_t sense_key;
- struct {
- Bit8u arr[4];
- } information;
+ struct {
+ Bit8u arr[4];
+ } information;
- struct {
- Bit8u arr[4];
- } specific_inf;
+ struct {
+ Bit8u arr[4];
+ } specific_inf;
- struct {
- Bit8u arr[3];
- } key_spec;
+ struct {
+ Bit8u arr[3];
+ } key_spec;
- Bit8u fruc;
- Bit8u asc;
- Bit8u ascq;
+ Bit8u fruc;
+ Bit8u asc;
+ Bit8u ascq;
};
struct error_recovery_t {
- unsigned char data[8];
+ unsigned char data[8];
};
struct cdrom_t {
- rd_bool ready;
- rd_bool locked;
+ rd_bool ready;
+ rd_bool locked;
- struct cdrom_ops * cd;
+ struct cdrom_ops * cd;
- uint32_t capacity;
- int next_lba;
- int remaining_blocks;
+ uint32_t capacity;
+ int next_lba;
+ int remaining_blocks;
- struct currentStruct {
- struct error_recovery_t error_recovery;
- } current;
+ struct currentStruct {
+ struct error_recovery_t error_recovery;
+ } current;
};
struct atapi_t {
- uint8_t command;
- int drq_bytes;
- int total_bytes_remaining;
+ uint8_t command;
+ int drq_bytes;
+ int total_bytes_remaining;
};
typedef enum { IDE_NONE, IDE_DISK, IDE_CDROM } device_type_t;
struct controller_t {
- struct controller_status status;
- Bit8u error_register;
- Bit8u head_no;
+ struct controller_status status;
+ Bit8u error_register;
+ Bit8u head_no;
- union {
- Bit8u sector_count;
- struct interrupt_reason_t interrupt_reason;
- };
+ union {
+ Bit8u sector_count;
+ struct interrupt_reason_t interrupt_reason;
+ };
- Bit8u sector_no;
+ Bit8u sector_no;
- union {
- Bit16u cylinder_no;
- Bit16u byte_count;
- };
+ union {
+ Bit16u cylinder_no;
+ Bit16u byte_count;
+ };
- Bit8u buffer[2048];
- Bit32u buffer_index;
- Bit32u drq_index;
- Bit8u current_command;
- Bit8u sectors_per_block;
- Bit8u lba_mode;
+ Bit8u buffer[2048];
+ Bit32u buffer_index;
+ Bit32u drq_index;
+ Bit8u current_command;
+ Bit8u sectors_per_block;
+ Bit8u lba_mode;
- struct {
- rd_bool reset; // 0=normal, 1=reset controller
- rd_bool disable_irq; // 0=allow irq, 1=disable irq
- } control;
+ struct {
+ rd_bool reset; // 0=normal, 1=reset controller
+ rd_bool disable_irq; // 0=allow irq, 1=disable irq
+ } control;
- Bit8u reset_in_progress;
- Bit8u features;
+ Bit8u reset_in_progress;
+ Bit8u features;
};
struct drive_t {
- device_image_t hard_drive;
- device_type_t device_type;
- // 512 byte buffer for ID drive command
- // These words are stored in native word endian format, as
- // they are fetched and returned via a return(), so
- // there's no need to keep them in x86 endian format.
- Bit16u id_drive[256];
+ device_image_t hard_drive;
+ device_type_t device_type;
+ // 512 byte buffer for ID drive command
+ // These words are stored in native word endian format, as
+ // they are fetched and returned via a return(), so
+ // there's no need to keep them in x86 endian format.
+ Bit16u id_drive[256];
- struct controller_t controller;
- struct cdrom_t cdrom;
- struct sense_info_t sense;
- struct atapi_t atapi;
+ struct controller_t controller;
+ struct cdrom_t cdrom;
+ struct sense_info_t sense;
+ struct atapi_t atapi;
- /* JRL */
- void * private_data;
+ /* JRL */
+ void * private_data;
- Bit8u model_no[41];
+ Bit8u model_no[41];
};
// For each ATA channel we should have one controller struct
// and an array of two drive structs
struct channel_t {
- struct drive_t drives[2];
- unsigned drive_select;
+ struct drive_t drives[2];
+ unsigned drive_select;
- Bit16u ioaddr1;
- Bit16u ioaddr2;
- Bit8u irq;
+ Bit16u ioaddr1;
+ Bit16u ioaddr2;
+ Bit8u irq;
};
struct ramdisk_t {
- struct channel_t channels[MAX_ATA_CHANNEL];
+ struct channel_t channels[MAX_ATA_CHANNEL];
};
