Block Device Disk Management

This module provides functions to manage disk devices. More...

Files
file	cpukit/include/rtems/diskdevs.h
	Block Device Disk Management API.
file	cpukit/libblock/src/diskdevs-init.c
	Block Device Disk Management Initialize.
file	cpukit/libblock/src/diskdevs.c
	Block device disk management implementation.

Data Structures
struct	rtems_blkdev_read_ahead
	Block device read-ahead control. More...
struct	rtems_blkdev_stats
	Block device statistics. More...
struct	rtems_disk_device
	Description of a disk device (logical and physical disks). More...

Macros
#define	RTEMS_DISK_READ_AHEAD_NO_TRIGGER   ((rtems_blkdev_bnum) -1)
	Trigger value to disable further read-ahead requests.
#define	RTEMS_DISK_READ_AHEAD_SIZE_AUTO   (0)
	Size value to set number of blocks based on config and disk size.

Typedefs
typedef uint32_t	rtems_blkdev_bnum
	Block device block index type.
typedef int(*)	rtems_block_device_ioctl(rtems_disk_device *dd, uint32_t req, void *argp)
	Block device IO control handler type.

Disk Device Maintainance
RTEMS_DEPRECATED rtems_status_code	rtems_disk_create_phys (dev_t dev, uint32_t block_size, rtems_blkdev_bnum block_count, rtems_block_device_ioctl handler, void *driver_data, const char *name)
RTEMS_DEPRECATED rtems_status_code	rtems_disk_create_log (dev_t dev, dev_t phys, rtems_blkdev_bnum block_begin, rtems_blkdev_bnum block_count, const char *name)
RTEMS_DEPRECATED rtems_status_code	rtems_disk_delete (dev_t dev)
RTEMS_DEPRECATED rtems_disk_device *	rtems_disk_obtain (dev_t dev)
RTEMS_DEPRECATED rtems_status_code	rtems_disk_release (rtems_disk_device *dd)

Disk Management
RTEMS_DEPRECATED rtems_status_code	rtems_disk_io_initialize (void)
RTEMS_DEPRECATED rtems_status_code	rtems_disk_io_done (void)

Detailed Description

This module provides functions to manage disk devices.

A disk is a set of blocks which are identified by a consecutive set of non-negative integers starting at zero. There are also logical disks which contain a subset of consecutive disk blocks. The logical disks are used to represent the partitions of a disk. The disk devices are accessed via the block device buffer module.