2002-05-28 Ralf Corsepius <corsepiu@faw.uni-ulm.de>

	* libblock, libfs moved to src/exec for multilib'ing.

1 files changed, 0 insertions, 275 deletions

diff --git a/c/src/libblock/include/rtems/bdbuf.h b/c/src/libblock/include/rtems/bdbuf.h
deleted file mode 100644
index 4405e17e34..0000000000
--- a/c/src/libblock/include/rtems/bdbuf.h
+++ /dev/null
@@ -1,275 +0,0 @@
-/* bdbuf.h -- block device buffer management
- *
- * Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia
- * Author: Victor V. Vengerov <vvv@oktet.ru>
- *
- * @(#) $Id$
- */
-
-#ifndef __RTEMS_LIBBLOCK_BDBUF_H__
-#define __RTEMS_LIBBLOCK_BDBUF_H__
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <rtems.h>
-#include <rtems/libio.h>
-#include <chain.h>
-
-#include "rtems/blkdev.h"
-#include "rtems/diskdevs.h"
-
-
-/*
- * To manage buffers we using Buffer Descriptors.
- * To speed-up buffer lookup descriptors are organized in AVL-Tree.
- * The fields 'dev' and 'block' are search key.
- */
-
-/* Buffer descriptors
- * Descriptors organized in AVL-tree to speedup buffer lookup.
- * dev and block fields are search key in AVL-tree.
- * Modified buffers, free buffers and used buffers linked in 'mod', 'free' and
- * 'lru' chains appropriately. 
- */
-
-typedef struct bdbuf_buffer {
-    Chain_Node link; /* Link in the lru, mod or free chains */
-
-    struct bdbuf_avl_node { 
-    	signed char cache;           /* Cache */
-
-	    struct bdbuf_buffer* left;  /* Left Child */
-	    struct bdbuf_buffer* right; /* Right Child */
-
-    	signed char bal;             /* The balance of the sub-tree */
-    } avl;
-
-    dev_t       dev;     /* device number */
-    blkdev_bnum block;   /* block number on the device */
-    
-    char       *buffer;  /* Pointer to the buffer memory area */
-    rtems_status_code status; /* Last I/O operation completion status */
-    int         error;   /* If status != RTEMS_SUCCESSFUL, this field contains
-                            errno value which can be used by user later */
-    boolean     modified:1;    /* =1 if buffer was modified */
-    boolean     in_progress:1; /* =1 if exchange with disk is in progress;
-                                  need to wait on semaphore */
-    boolean     actual:1;      /* Buffer contains actual data */
-    int         use_count; /* Usage counter; incremented when somebody use
-                              this buffer; decremented when buffer released
-                              without modification or when buffer is flushed
-                              by swapout task */
-
-    rtems_bdpool_id pool;  /* Identifier of buffer pool to which this buffer
-                              belongs */
-    CORE_mutex_Control transfer_sema;
-                           /* Transfer operation semaphore */
-} bdbuf_buffer;
-
-
-
-/* bdbuf_config structure describes block configuration (size,
- * amount, memory location) for buffering layer
- */
-typedef struct rtems_bdbuf_config {
-    int     size;     /* Size of block */
-    int     num;      /* Number of blocks of appropriate size */
-    char   *mem_area; /* Pointer to the blocks location or NULL, in this
-                          case memory for blocks will be allocated by
-                          Buffering Layer with the help of RTEMS partition
-                          manager */
-} rtems_bdbuf_config;
-
-extern rtems_bdbuf_config rtems_bdbuf_configuration[];
-extern int rtems_bdbuf_configuration_size;
-
-/* rtems_bdbuf_init --
- *     Prepare buffering layer to work - initialize buffer descritors 
- *     and (if it is neccessary) buffers. Buffers will be allocated accoriding
- *     to the configuration table, each entry describes kind of block and 
- *     amount requested. After initialization all blocks is placed into
- *     free elements lists.
- *
- * PARAMETERS:
- *     conf_table - pointer to the buffers configuration table
- *     size       - number of entries in configuration table
- *
- * RETURNS:
- *     RTEMS status code (RTEMS_SUCCESSFUL if operation completed successfully
- *     or error code if error is occured)
- */
-rtems_status_code
-rtems_bdbuf_init(rtems_bdbuf_config *conf_table, int size);
-
-
-/* rtems_bdbuf_get --
- *     Obtain block buffer. If specified block already cached (i.e. there's
- *     block in the _modified_, or _recently_used_), return address
- *     of appropriate buffer descriptor and increment reference counter to 1. 
- *     If block is not cached, allocate new buffer and return it. Data 
- *     shouldn't be read to the buffer from media; buffer may contains 
- *     arbitrary data. This primitive may be blocked if there are no free 
- *     buffer descriptors available and there are no unused non-modified 
- *     (or synchronized with media) buffers available.
- *
- * PARAMETERS:
- *     device - device number (constructed of major and minor device number)
- *     block  - linear media block number
- *     bd     - address of variable to store pointer to the buffer descriptor
- *
- * RETURNS:
- *     RTEMS status code (RTEMS_SUCCESSFUL if operation completed successfully
- *     or error code if error is occured)
- *
- * SIDE EFFECTS:
- *     bufget_sema semaphore obtained by this primitive.
- */
-rtems_status_code
-rtems_bdbuf_get(dev_t device, blkdev_bnum block, bdbuf_buffer **bdb_ptr);
-
-/* rtems_bdbuf_read --
- *     (Similar to the rtems_bdbuf_get, except reading data from media)
- *     Obtain block buffer. If specified block already cached, return address
- *     of appropriate buffer and increment reference counter to 1. If block is
- *     not cached, allocate new buffer and read data to it from the media.
- *     This primitive may be blocked on waiting until data to be read from
- *     media, if there are no free buffer descriptors available and there are
- *     no unused non-modified (or synchronized with media) buffers available.
- *
- * PARAMETERS:
- *     device - device number (consists of major and minor device number)
- *     block  - linear media block number
- *     bd     - address of variable to store pointer to the buffer descriptor
- *
- * RETURNS:
- *     RTEMS status code (RTEMS_SUCCESSFUL if operation completed successfully
- *     or error code if error is occured)
- *
- * SIDE EFFECTS:
- *     bufget_sema and transfer_sema semaphores obtained by this primitive.
- */
-rtems_status_code
-rtems_bdbuf_read(dev_t device, blkdev_bnum block, bdbuf_buffer **bdb_ptr);
-
-/* rtems_bdbuf_release --
- *     Release buffer allocated before. This primitive decrease the
- *     usage counter. If it is zero, further destiny of buffer depends on
- *     'modified' status. If buffer was modified, it is placed to the end of
- *     mod list and flush task waken up. If buffer was not modified,
- *     it is placed to the end of lru list, and bufget_sema released, allowing
- *     to reuse this buffer.
- *
- * PARAMETERS:
- *     bd_buf - pointer to the bdbuf_buffer structure previously obtained using
- *              get/read primitive. 
- *
- * RETURNS:
- *     RTEMS status code (RTEMS_SUCCESSFUL if operation completed successfully
- *     or error code if error is occured)
- *
- * SIDE EFFECTS:
- *     flush_sema and bufget_sema semaphores may be released by this primitive.
- */
-rtems_status_code
-rtems_bdbuf_release(bdbuf_buffer *bd_buf);
-
-/* rtems_bdbuf_release_modified --
- *     Release buffer allocated before, assuming that it is _modified_ by
- *     it's owner. This primitive decrease usage counter for buffer, mark 
- *     buffer descriptor as modified. If usage counter is 0, insert it at
- *     end of mod chain and release flush_sema semaphore to activate the
- *     flush task.
- *
- * PARAMETERS:
- *     bd_buf - pointer to the bdbuf_buffer structure previously obtained using
- *              get/read primitive.
- *
- * RETURNS:
- *     RTEMS status code (RTEMS_SUCCESSFUL if operation completed successfully
- *     or error code if error is occured)
- *
- * SIDE EFFECTS:
- *     flush_sema semaphore may be released by this primitive.
- */
-rtems_status_code
-rtems_bdbuf_release_modified(bdbuf_buffer *bd_buf);
-
-/* rtems_bdbuf_sync --
- *     Wait until specified buffer synchronized with disk. Invoked on exchanges
- *     critical for data consistency on the media. This primitive mark owned
- *     block as modified, decrease usage counter. If usage counter is 0,
- *     block inserted to the mod chain and flush_sema semaphore released.
- *     Finally, primitives blocked on transfer_sema semaphore.
- *
- * PARAMETERS:
- *     bd_buf - pointer to the bdbuf_buffer structure previously obtained using
- *              get/read primitive.
- *
- * RETURNS:
- *     RTEMS status code (RTEMS_SUCCESSFUL if operation completed successfully
- *     or error code if error is occured)
- *
- * SIDE EFFECTS:
- *     Primitive may be blocked on transfer_sema semaphore.
- */
-rtems_status_code
-rtems_bdbuf_sync(bdbuf_buffer *bd_buf);
-
-/* rtems_bdbuf_syncdev --
- *     Synchronize with disk all buffers containing the blocks belonging to
- *     specified device.
- *
- * PARAMETERS:
- *     dev - block device number
- *
- * RETURNS:
- *     RTEMS status code (RTEMS_SUCCESSFUL if operation completed successfully
- *     or error code if error is occured)
- */
-rtems_status_code
-rtems_bdbuf_syncdev(dev_t dev);
-
-/* rtems_bdbuf_find_pool --
- *     Find first appropriate buffer pool. This primitive returns the index
- *     of first buffer pool which block size is greater than or equal to
- *     specified size.
- *
- * PARAMETERS:
- *     block_size - requested block size
- *     pool       - placeholder for result
- *
- * RETURNS:
- *     RTEMS status code: RTEMS_SUCCESSFUL if operation completed successfully,
- *     RTEMS_INVALID_SIZE if specified block size is invalid (not a power 
- *     of 2), RTEMS_NOT_DEFINED if buffer pool for this or greater block size
- *     is not configured.
- */
-rtems_status_code
-rtems_bdbuf_find_pool(int block_size, rtems_bdpool_id *pool);
-
-/* rtems_bdbuf_get_pool_info --
- *     Obtain characteristics of buffer pool with specified number.
- *
- * PARAMETERS:
- *     pool       - buffer pool number
- *     block_size - block size for which buffer pool is configured returned
- *                  there
- *     blocks     - number of buffers in buffer pool returned there 
- *
- * RETURNS:
- *     RTEMS status code: RTEMS_SUCCESSFUL if operation completed successfully,
- *     RTEMS_INVALID_NUMBER if appropriate buffer pool is not configured.
- *
- * NOTE:
- *     Buffer pools enumerated contiguously starting from 0.
- */
-rtems_status_code
-rtems_bdbuf_get_pool_info(rtems_bdpool_id pool, int *block_size, int *blocks);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif