/*
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* include/asm-ppc/rheap.h
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*
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* Header file for the implementation of a remote heap.
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*
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* Author: Pantelis Antoniou <panto@intracom.gr>
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*
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* 2004 (c) INTRACOM S.A. Greece. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#ifndef __ASM_PPC_RHEAP_H__
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#define __ASM_PPC_RHEAP_H__
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#include <linux/list.h>
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typedef struct _rh_block {
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struct list_head list;
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unsigned long start;
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int size;
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const char *owner;
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} rh_block_t;
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typedef struct _rh_info {
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unsigned int alignment;
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int max_blocks;
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int empty_slots;
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rh_block_t *block;
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struct list_head empty_list;
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struct list_head free_list;
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struct list_head taken_list;
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unsigned int flags;
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} rh_info_t;
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#define RHIF_STATIC_INFO 0x1
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#define RHIF_STATIC_BLOCK 0x2
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typedef struct _rh_stats {
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unsigned long start;
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int size;
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const char *owner;
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} rh_stats_t;
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#define RHGS_FREE 0
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#define RHGS_TAKEN 1
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/* Create a remote heap dynamically */
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extern rh_info_t *rh_create(unsigned int alignment);
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/* Destroy a remote heap, created by rh_create() */
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extern void rh_destroy(rh_info_t * info);
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/* Initialize in place a remote info block */
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extern void rh_init(rh_info_t * info, unsigned int alignment, int max_blocks,
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rh_block_t * block);
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/* Attach a free region to manage */
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extern int rh_attach_region(rh_info_t * info, unsigned long start, int size);
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/* Detach a free region */
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extern unsigned long rh_detach_region(rh_info_t * info, unsigned long start, int size);
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/* Allocate the given size from the remote heap (with alignment) */
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extern unsigned long rh_alloc_align(rh_info_t * info, int size, int alignment,
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const char *owner);
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/* Allocate the given size from the remote heap */
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extern unsigned long rh_alloc(rh_info_t * info, int size, const char *owner);
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/* Allocate the given size from the given address */
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extern unsigned long rh_alloc_fixed(rh_info_t * info, unsigned long start, int size,
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const char *owner);
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/* Free the allocated area */
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extern int rh_free(rh_info_t * info, unsigned long start);
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/* Get stats for debugging purposes */
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extern int rh_get_stats(rh_info_t * info, int what, int max_stats,
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rh_stats_t * stats);
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/* Simple dump of remote heap info */
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extern void rh_dump(rh_info_t * info);
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/* Simple dump of remote info block */
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void rh_dump_blk(rh_info_t *info, rh_block_t *blk);
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/* Set owner of taken block */
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extern int rh_set_owner(rh_info_t * info, unsigned long start, const char *owner);
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#endif /* __ASM_PPC_RHEAP_H__ */
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