| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-ppc/rheap.c |
| 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 | void *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_t { |
| 41 | void *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, void *start, int size); |
| 61 | |
| 62 | /* Detach a free region */ |
| 63 | extern void *rh_detach_region(rh_info_t * info, void *start, int size); |
| 64 | |
| 65 | /* Allocate the given size from the remote heap */ |
| 66 | extern void *rh_alloc(rh_info_t * info, int size, const char *owner); |
| 67 | |
| 68 | /* Allocate the given size from the given address */ |
| 69 | extern void *rh_alloc_fixed(rh_info_t * info, void *start, int size, |
| 70 | const char *owner); |
| 71 | |
| 72 | /* Free the allocated area */ |
| 73 | extern int rh_free(rh_info_t * info, void *start); |
| 74 | |
| 75 | /* Get stats for debugging purposes */ |
| 76 | extern int rh_get_stats(rh_info_t * info, int what, int max_stats, |
| 77 | rh_stats_t * stats); |
| 78 | |
| 79 | /* Simple dump of remote heap info */ |
| 80 | extern void rh_dump(rh_info_t * info); |
| 81 | |
| 82 | /* Set owner of taken block */ |
| 83 | extern int rh_set_owner(rh_info_t * info, void *start, const char *owner); |
| 84 | |
| 85 | #endif /* __ASM_PPC_RHEAP_H__ */ |