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diff --git a/cpukit/libblock/include/rtems/ramdisk.h b/cpukit/libblock/include/rtems/ramdisk.h
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+/**
+ * @file
+ *
+ * @ingroup rtems_ramdisk
+ *
+ * @brief RAM disk block device API.
+ */
+
+/*
+ * Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia
+ * Author: Victor V. Vengerov <vvv@oktet.ru>
+ *
+ * @(#) $Id$
+ */
+
+#ifndef _RTEMS_RAMDISK_H
+#define _RTEMS_RAMDISK_H
+
+
+#include <rtems.h>
+#include <rtems/blkdev.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup rtems_ramdisk RAM Disk Device
+ *
+ * @ingroup rtems_blkdev
+ *
+ * @{
+ */
+
+/**
+ * @name Static Configuration
+ *
+ * @{
+ */
+
+/**
+ * @brief RAM disk configuration table entry.
+ */
+typedef struct rtems_ramdisk_config {
+ /**
+ * @brief RAM disk block size.
+ */
+ uint32_t block_size;
+
+ /**
+ * @brief Number of blocks on this RAM disk.
+ */
+ rtems_blkdev_bnum block_num;
+
+ /**
+ * @brief RAM disk location or @c NULL if RAM disk memory should be allocated
+ * dynamically.
+ */
+ void *location;
+} rtems_ramdisk_config;
+
+/**
+ * @brief External reference to the RAM disk configuration table describing
+ * each RAM disk in the system.
+ *
+ * The configuration table is provided by the application.
+ */
+extern rtems_ramdisk_config rtems_ramdisk_configuration [];
+
+/**
+ * @brief External reference the size of the RAM disk configuration table @ref
+ * rtems_ramdisk_configuration.
+ *
+ * The configuration table size is provided by the application.
+ */
+extern size_t rtems_ramdisk_configuration_size;
+
+/**
+ * @brief RAM disk driver initialization entry point.
+ */
+rtems_device_driver ramdisk_initialize(
+ rtems_device_major_number major,
+ rtems_device_minor_number minor,
+ void *arg
+);
+
+/**
+ * RAM disk driver table entry.
+ */
+#define RAMDISK_DRIVER_TABLE_ENTRY \
+ { \
+ .initialization_entry = ramdisk_initialize, \
+ RTEMS_GENERIC_BLOCK_DEVICE_DRIVER_ENTRIES \
+ }
+
+#define RAMDISK_DEVICE_BASE_NAME "/dev/rd"
+
+/** @} */
+
+/**
+ * @name Runtime Configuration
+ *
+ * @{
+ */
+
+/**
+ * @brief RAM disk descriptor.
+ */
+typedef struct ramdisk {
+ /**
+ * @brief RAM disk block size, the media size.
+ */
+ uint32_t block_size;
+
+ /**
+ * @brief Number of blocks on this RAM disk.
+ */
+ rtems_blkdev_bnum block_num;
+
+ /**
+ * @brief RAM disk memory area.
+ */
+ void *area;
+
+ /**
+ * @brief RAM disk is initialized.
+ */
+ bool initialized;
+
+ /**
+ * @brief Indicates if memory is allocated by malloc() for this RAM disk.
+ */
+ bool malloced;
+
+ /**
+ * @brief Trace enable.
+ */
+ bool trace;
+} ramdisk;
+
+extern const rtems_driver_address_table ramdisk_ops;
+
+int ramdisk_ioctl(rtems_disk_device *dd, uint32_t req, void *argp);
+
+/**
+ * @brief Allocates and initializes a RAM disk descriptor.
+ *
+ * The block size will be @a block_size. The block count will be @a
+ * block_count. The disk storage area begins at @a area_begin. If @a
+ * area_begin is @c NULL, the memory will be allocated and zeroed. Sets the
+ * trace enable to @a trace.
+ *
+ * @return Pointer to allocated and initialized ramdisk structure, or @c NULL
+ * if no memory is available.
+ *
+ * @note
+ * Runtime configuration example:
+ * @code
+ * #include <rtems.h>
+ * #include <rtems/libio.h>
+ * #include <rtems/ramdisk.h>
+ *
+ * rtems_status_code create_ramdisk(
+ * const char *disk_name_path,
+ * uint32_t block_size,
+ * rtems_blkdev_bnum block_count
+ * )
+ * {
+ * rtems_status_code sc = RTEMS_SUCCESSFUL;
+ * rtems_device_major_number major = 0;
+ * ramdisk *rd = NULL;
+ * dev_t dev = 0;
+ *
+ * sc = rtems_io_register_driver(0, &ramdisk_ops, &major);
+ * if (sc != RTEMS_SUCCESSFUL) {
+ * return RTEMS_UNSATISFIED;
+ * }
+ *
+ * rd = ramdisk_allocate(NULL, block_size, block_count, false);
+ * if (rd == NULL) {
+ * rtems_io_unregister_driver(major);
+ *
+ * return RTEMS_UNSATISFIED;
+ * }
+ *
+ * dev = rtems_filesystem_make_dev_t(major, 0);
+ *
+ * sc = rtems_disk_create_phys(
+ * dev,
+ * block_size,
+ * block_count,
+ * ramdisk_ioctl,
+ * rd,
+ * disk_name_path
+ * );
+ * if (sc != RTEMS_SUCCESSFUL) {
+ * ramdisk_free(rd);
+ * rtems_io_unregister_driver(major);
+ *
+ * return RTEMS_UNSATISFIED;
+ * }
+ *
+ * return RTEMS_SUCCESSFUL;
+ * }
+ * @endcode
+ */
+ramdisk *ramdisk_allocate(
+ void *area_begin,
+ uint32_t block_size,
+ rtems_blkdev_bnum block_count,
+ bool trace
+);
+
+void ramdisk_free(ramdisk *rd);
+
+/**
+ * @brief Allocates, initializes and registers a RAM disk.
+ *
+ * The block size will be @a block_size. The block count will be @a
+ * block_count. The disk storage will be allocated. Sets the trace enable to
+ * @a trace. Registers a device node with disk name path @a disk. The
+ * registered device number will be returned in @a dev.
+ *
+ * @retval RTEMS_SUCCESSFUL Successful operation.
+ * @retval RTEMS_UNSATISFIED Something is wrong.
+ */
+rtems_status_code ramdisk_register(
+ uint32_t block_size,
+ rtems_blkdev_bnum block_count,
+ bool trace,
+ const char *disk,
+ dev_t *dev
+);
+
+/** @} */
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif