harddisk_header.c File Reference

#include "harddisk_header.h"

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...

Variables
harddisk_states	harddisk_current_states
	Current states of all hard drives. More...
harddisk_configuration	harddisk_current_configuration
	Current configuration of harddisk. More...

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

Variable Documentation

harddisk_current_configuration

harddisk_configuration harddisk_current_configuration

Current configuration of harddisk.

harddisk_current_states

harddisk_states harddisk_current_states

Current states of all hard drives.