ata_drive Struct Reference

ATA drive. More...

#include <ata_drive.hpp>

Inheritance diagram for ata_drive:

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Collaboration diagram for ata_drive:

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List of all members.

Public Types
enum	state_flags_constants { REMOVABLE = 1 << (static_log2<block_driver::ALL_MASK>::value + 1), FAKE_IO = REMOVABLE << 1, ALL_MASK = block_driver::ALL_MASK | REMOVABLE | FAKE_IO }
typedef bitmask< uint_value_t < ALL_MASK >::least >	state_flags
Public Member Functions
	static_assert (integer_traits< state_flags::word_type >::const_max >=ALL_MASK,"state_flags's max value is too small")
	ata_drive (machine_base &machine, block_driver *driver=nullptr, state_flags flags=0)
int	reset (void)
const char *	name (void) const
void	set_drive_name_index (const string &name, const uint8_t index)
bool	is_ready (void) const
void	set_irq (const l4_irq_t irq)
void	assert_irq_if_enabled (void) const
uint32_t	read_command_block (ata_command_block::offset_t offset, access_size access_size)
int	write_command_block (ata_command_block::offset_t offset, uint32_t data, access_size access_size)
uint32_t	read_control_block (ata_control_block::offset_t offset, access_size access_size)
int	write_control_block (ata_control_block::offset_t offset, uint32_t data, access_size access_size)
int	read_write_DMA (uint8_t read_write, l4_gpa_t PRD_base)
Static Public Attributes
static const uint8_t	MAX_MULTIPLE_SECTORS = 128
	Maximum allowed sector number for multi sector transfer modes.
static const uint32_t	BUFFER_SIZE = SECTOR_SIZE * 256
	Internal sector buffer's size.
Protected Member Functions
bool	check_sector_range (l4_sector_t sector, l4_sector_t number)
void	identify_device (void)
void	execute_command (uint8_t command)
int	read_from_media (uint8_t *dst, l4_sector_t sector, l4_sector_t number)
int	read_buffer_from_media (l4_sector_t sector, l4_sector_t number, unsigned commit_blocks=0)
uint32_t	read_from_buffer (access_size access_size)
int	write_to_media (uint8_t *src, l4_sector_t sector, l4_sector_t number)
int	write_buffer_to_media (void)
int	write_to_buffer (uint32_t data, access_size access_size)
int	read_write_media (uint8_t read_write, l4_hva_t base, l4_hva_t size)
Protected Attributes
string	drive_name
	The drive's name returned by name().
machine_base &	machine
	Reference to the machine object this drive belongs to.
l4_irq_t	irq
	The IRQ number the channel is connected to.
ata_command_block	command_block
	ATA command block.
ata_control_block	control_block
	ATA control block.
block_driver *const	driver
	The driver to get blocks from.
state_flags	state
	Current active state/features merged with the ones provided by the driver.
uint8_t	multiple_sectors
	Current multiple sector setting for multi sector transfer modes.
uint8_t	last_command
	Last command executed (needed for DMA operation).
struct ata_drive::geometry	geometry
	Struct/Attribute to store and compute the drive's physical geometry.
struct ata_drive::transaction	transaction
	Struct/Attribute to store the current transaction state.
Classes
struct	geometry
	Struct/Attribute to store and compute the drive's physical geometry. More...
struct	transaction
	Struct/Attribute to store the current transaction state. More...

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Detailed Description

ATA drive.

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Member Enumeration Documentation

enum ata_drive::state_flags_constants

Enumerator:

REMOVABLE	The medium is removable.
FAKE_IO	Pretend success, but do not read/write anything.
ALL_MASK	Mask containing all used bits.

Reimplemented from block_driver_constants.

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Member Data Documentation

const uint32_t ata_drive::BUFFER_SIZE = SECTOR_SIZE * 256 [static]

Internal sector buffer's size.

The LBA48 address feature requires SECTOR_SIZE * 65536 sectors.

machine_base& ata_drive::machine [protected]

Reference to the machine object this drive belongs to.

Used to request/free resources.

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The documentation for this struct was generated from the following files:

• ata_drive.hpp
• ata_drive.cpp