harddisk_header.h File Reference

#include <stdint.h>
#include <stddef.h>
#include "assembly/io.h"
#include "cpu/timer/timer.h"
#include "harddisk_identify_device_data.h"
#include "harddisk_pio_mode_header.h"

Go to the source code of this file.

Classes
struct	harddisk_states
	Defines status of hard disks in system. More...
struct	harddisk_configuration
	Defines configuration of harddisk driver. More...

Macros
#define	HARDDISK_BSY_ERROR_DELAY_MS   10000
	Delay after which we assume drive failed during BSY pooling. More...

Enumerations
enum	HARDDISK_ATA_BUS_TYPE { HARDDISK_ATA_PRIMARY_BUS = 1, HARDDISK_ATA_SECONDARY_BUS = 2 }
	Enum represent bus type. More...
enum	HARDDISK_ATA_MASTER_SLAVE { HARDDISK_ATA_MASTER = 1, HARDDISK_ATA_SLAVE = 2 }
	Enum represent hard disk type. More...
enum	HARDDISK_STATE {   HARDDISK_ERROR = -1, HARDDISK_NOT_PRESENT = 0, HARDDISK_ATA_PRESENT = 1, HARDDISK_ATAPI_PRESENT = 2,   HARDDISK_SATA_PRESENT = 3, HARDDISK_SATAPI_PRESENT = 4 }
	Enum represent hard disk status. More...

Functions
int8_t	__harddisk_soft_reset_port (uint16_t control_port)
	Perform soft reset for given control_port. More...
void	__harddisk_400ns_delay (uint16_t control_port)
	Makes 400ns delay. More...
int8_t	__harddisk_bsy_poll (uint16_t control_port)
	Pools BSY bit until clears. More...
void	__harddisk_get_pointers (HARDDISK_ATA_MASTER_SLAVE type, HARDDISK_ATA_BUS_TYPE bus, const HARDDISK_STATE **state, const harddisk_identify_device_data **data)
	Gets pointers to hard disk data. More...

Macro Definition Documentation

HARDDISK_BSY_ERROR_DELAY_MS

#define HARDDISK_BSY_ERROR_DELAY_MS   10000

Delay after which we assume drive failed during BSY pooling.

Enumeration Type Documentation

HARDDISK_ATA_BUS_TYPE

enum HARDDISK_ATA_BUS_TYPE

Enum represent bus type.

Enumerator
HARDDISK_ATA_PRIMARY_BUS	Primary bus.
HARDDISK_ATA_SECONDARY_BUS	Secondary bus.

HARDDISK_ATA_MASTER_SLAVE

enum HARDDISK_ATA_MASTER_SLAVE

Enum represent hard disk type.

Enumerator
HARDDISK_ATA_MASTER	Master hard disk.
HARDDISK_ATA_SLAVE	Slave hard disk.

HARDDISK_STATE

enum HARDDISK_STATE

Enum represent hard disk status.

Enumerator
HARDDISK_ERROR	Error.
HARDDISK_NOT_PRESENT	Not present.
HARDDISK_ATA_PRESENT	ATA device present.
HARDDISK_ATAPI_PRESENT	ATAPI device present.
HARDDISK_SATA_PRESENT	SATA device present.
HARDDISK_SATAPI_PRESENT	SATAPI device present.

Function Documentation

__harddisk_400ns_delay()

void __harddisk_400ns_delay

(

uint16_t

control_port

)

Makes 400ns delay.

Makes 400ns delay by checking drive status 15 times. User after switching type of drive in bus.

Parameters

port	Port for do delay.

__harddisk_bsy_poll()

int8_t __harddisk_bsy_poll

(

uint16_t

control_port

)

Pools BSY bit until clears.

Pools BSY bit until clears, if pooling takes too long exits with error.

Parameters

port	Port for pooling.

Returns

1 if success, -1 if error

__harddisk_get_pointers()

void __harddisk_get_pointers	(	HARDDISK_ATA_MASTER_SLAVE	type,
		HARDDISK_ATA_BUS_TYPE	bus,
		const HARDDISK_STATE **	state,
		const harddisk_identify_device_data **	data
	)

Gets pointers to hard disk data.

Sets state to proper state and data from harddisk_states structure to proper values for given harddisk and bus type.

Parameters

type	Type of harddisk.
bus	Type of bus.
state	Pointer to state.
bus	Pointer to data.

__harddisk_soft_reset_port()

int8_t __harddisk_soft_reset_port

(

uint16_t

control_port

)

Perform soft reset for given control_port.

Soft reset should set bit SRST in Device Control Register for 5 us.

Parameters

control_port

Control port to perform reset

Returns

1 if success, -1 if error