1 /*
2 * include/asm-ppc/rheap.h
3 *
4 * Header file for the implementation of a remote heap.
5 *
6 * Author: Pantelis Antoniou <panto@intracom.gr>
7 *
8 * 2004 (c) INTRACOM S.A. Greece. This file is licensed under
9 * the terms of the GNU General Public License version 2. This program
10 * is licensed "as is" without any warranty of any kind, whether express
11 * or implied.
12 */
13
14 #ifndef __ASM_PPC_RHEAP_H__
15 #define __ASM_PPC_RHEAP_H__
16
17 #include <linux/list.h>
18
19 typedef struct _rh_block {
20 struct list_head list;
21 unsigned long start;
22 int size;
23 const char *owner;
24 } rh_block_t;
25
26 typedef struct _rh_info {
27 unsigned int alignment;
28 int max_blocks;
29 int empty_slots;
30 rh_block_t *block;
31 struct list_head empty_list;
32 struct list_head free_list;
33 struct list_head taken_list;
34 unsigned int flags;
35 } rh_info_t;
36
37 #define RHIF_STATIC_INFO 0x1
38 #define RHIF_STATIC_BLOCK 0x2
39
40 typedef struct _rh_stats {
41 unsigned long start;
42 int size;
43 const char *owner;
44 } rh_stats_t;
45
46 #define RHGS_FREE 0
47 #define RHGS_TAKEN 1
48
49 /* Create a remote heap dynamically */
50 extern rh_info_t *rh_create(unsigned int alignment);
51
52 /* Destroy a remote heap, created by rh_create() */
53 extern void rh_destroy(rh_info_t * info);
54
55 /* Initialize in place a remote info block */
56 extern void rh_init(rh_info_t * info, unsigned int alignment, int max_blocks,
57 rh_block_t * block);
58
59 /* Attach a free region to manage */
60 extern int rh_attach_region(rh_info_t * info, unsigned long start, int size);
61
62 /* Detach a free region */
63 extern unsigned long rh_detach_region(rh_info_t * info, unsigned long start, int size);
64
65 /* Allocate the given size from the remote heap (with alignment) */
66 extern unsigned long rh_alloc_align(rh_info_t * info, int size, int alignment,
67 const char *owner);
68
69 /* Allocate the given size from the remote heap */
70 extern unsigned long rh_alloc(rh_info_t * info, int size, const char *owner);
71
72 /* Allocate the given size from the given address */
73 extern unsigned long rh_alloc_fixed(rh_info_t * info, unsigned long start, int size,
74 const char *owner);
75
76 /* Free the allocated area */
77 extern int rh_free(rh_info_t * info, unsigned long start);
78
79 /* Get stats for debugging purposes */
80 extern int rh_get_stats(rh_info_t * info, int what, int max_stats,
81 rh_stats_t * stats);
82
83 /* Simple dump of remote heap info */
84 extern void rh_dump(rh_info_t * info);
85
86 /* Simple dump of remote info block */
87 void rh_dump_blk(rh_info_t *info, rh_block_t *blk);
88
89 /* Set owner of taken block */
90 extern int rh_set_owner(rh_info_t * info, unsigned long start, const char *owner);
91
92 #endif /* __ASM_PPC_RHEAP_H__ */
93
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