RTEMS 6.1-rc2
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Files | Data Structures | Macros | Typedefs
Block Device Disk Management

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

Files

file  diskdevs.h
 Block Device Disk Management API.
 
file  diskdevs-init.c
 Block Device Disk Management Initialize.
 
file  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_devicertems_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.