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Diffstat (limited to '')
| -rw-r--r-- | c/src/exec/libblock/include/rtems/diskdevs.h | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/c/src/exec/libblock/include/rtems/diskdevs.h b/c/src/exec/libblock/include/rtems/diskdevs.h deleted file mode 100644 index fab3231e62..0000000000 --- a/c/src/exec/libblock/include/rtems/diskdevs.h +++ /dev/null @@ -1,206 +0,0 @@ -/* - * logdisk.h - Physical and logical block devices (disks) support - * - * Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia - * Author: Victor V. Vengerov <vvv@oktet.ru> - * - * @(#) $Id$ - */ - -#ifndef __RTEMS_LIBBLOCK_LOGDISK_H__ -#define __RTEMS_LIBBLOCK_LOGDISK_H__ - -#ifdef __cplusplus -extern "C" { -#endif - -#include <rtems.h> -#include <rtems/libio.h> -#include <stdlib.h> - -#include "rtems/blkdev.h" - -/* Buffer pool identifier */ -typedef int rtems_bdpool_id; - -/* Block device ioctl handler */ -typedef int (* block_device_ioctl) (dev_t dev, int req, void *argp); - -/* disk_device: Entry of this type created for every disk device (both for - * logical and physical disks). - * Array of arrays of pointers to disk_device structures maintained. First - * table indexed by major number and second table indexed by minor number. - * Such data organization allow quick lookup using data structure of - * moderated size. - */ -typedef struct disk_device { - dev_t dev; /* Device ID (major + minor) */ - struct disk_device *phys_dev; /* Physical device ID (the same - as dev if this entry specifies - the physical device) */ - char *name; /* Disk device name */ - int uses; /* Use counter. Device couldn't be - removed if it is in use. */ - int start; /* Starting block number (0 for - physical devices, block offset - on the related physical device - for logical device) */ - int size; /* Size of physical or logical disk - in disk blocks */ - int block_size; /* Size of device block (minimum - transfer unit) in bytes - (must be power of 2) */ - int block_size_log2; /* log2 of block_size */ - rtems_bdpool_id pool; /* Buffer pool assigned to this - device */ - block_device_ioctl ioctl; /* ioctl handler for this block - device */ -} disk_device; - -/* rtems_disk_create_phys -- - * Create physical disk entry. This function usually invoked from - * block device driver initialization code when physical device - * detected in the system. Device driver should provide ioctl handler - * to allow block device access operations. This primitive will register - * device in rtems (invoke rtems_io_register_name). - * - * PARAMETERS: - * dev - device identifier (major, minor numbers) - * block_size - size of disk block (minimum data transfer unit); must be - * power of 2 - * disk_size - number of blocks on device - * handler - IOCTL handler (function providing basic block input/output - * request handling BIOREQUEST and other device management - * operations) - * name - character name of device (e.g. /dev/hda) - * - * RETURNS: - * RTEMS_SUCCESSFUL if information about new physical disk added, or - * error code if error occured (device already registered, wrong block - * size value, no memory available). - */ -rtems_status_code -rtems_disk_create_phys(dev_t dev, int block_size, int disk_size, - block_device_ioctl handler, - char *name); - -/* rtems_disk_create_log -- - * Create logical disk entry. Logical disk is contiguous area on physical - * disk. Disk may be splitted to several logical disks in several ways: - * manually or using information stored in blocks on physical disk - * (DOS-like partition table, BSD disk label, etc). This function usually - * invoked from application when application-specific splitting are in use, - * or from generic code which handle different logical disk organizations. - * This primitive will register device in rtems (invoke - * rtems_io_register_name). - * - * PARAMETERS: - * dev - logical device identifier (major, minor numbers) - * phys - physical device (block device which holds this logical disk) - * identifier - * start - starting block number on the physical device - * size - logical disk size in blocks - * name - logical disk name - * - * RETURNS: - * RTEMS_SUCCESSFUL if logical device successfully added, or error code - * if error occured (device already registered, no physical device - * exists, logical disk is out of physical disk boundaries, no memory - * available). - */ -rtems_status_code -rtems_disk_create_log(dev_t dev, dev_t phys, int start, int size, char *name); - -/* rtems_disk_delete -- - * Delete physical or logical disk device. Device may be deleted if its - * use counter (and use counters of all logical devices - if it is - * physical device) equal to 0. When physical device deleted, - * all logical devices deleted inherently. Appropriate devices removed - * from "/dev" filesystem. - * - * PARAMETERS: - * dev - device identifier (major, minor numbers) - * - * RETURNS: - * RTEMS_SUCCESSFUL if block device successfully deleted, or error code - * if error occured (device is not defined, device is in use). - */ -rtems_status_code -rtems_disk_delete(dev_t dev); - -/* rtems_disk_lookup -- - * Find block device descriptor by its device identifier. This function - * increment usage counter to 1. User should release disk_device structure - * by invoking rtems_disk_release primitive. - * - * PARAMETERS: - * dev - device identifier (major, minor numbers) - * - * RETURNS: - * pointer to the block device descriptor, or NULL if no such device - * exists. - */ -disk_device * -rtems_disk_lookup(dev_t dev); - -/* rtems_disk_release -- - * Release disk_device structure (decrement usage counter to 1). - * - * PARAMETERS: - * dd - pointer to disk device structure - * - * RETURNS: - * RTEMS_SUCCESSFUL - * - * NOTE: - * It should be implemented as inline function. - */ -rtems_status_code -rtems_disk_release(disk_device *dd); - -/* rtems_disk_next -- - * Disk device enumerator. Looking for device having device number larger - * than dev and return disk device descriptor for it. If there are no - * such device, NULL value returned. - * - * PARAMETERS: - * dev - device number (use -1 to start search) - * - * RETURNS: - * Pointer to the disk descriptor for next disk device, or NULL if all - * devices enumerated. */ -disk_device * -rtems_disk_next(dev_t dev); - -/* rtems_diskio_initialize -- - * Initialization of disk device library (initialize all data structures, - * etc.) - * - * PARAMETERS: - * none - * - * RETURNS: - * RTEMS_SUCCESSFUL if library initialized, or error code if error - * occured. - */ -rtems_status_code -rtems_disk_io_initialize(void); - -/* rtems_diskio_done -- - * Release all resources allocated for disk device interface. - * - * PARAMETERS: - * none - * - * RETURNS: - * RTEMS_SUCCESSFUL if all resources released, or error code if error - * occured. - */ -rtems_status_code -rtems_disk_io_done(void); - -#ifdef __cplusplus -} -#endif - -#endif |