1 files changed, 85 insertions, 0 deletions

diff --git a/include/asm-ppc/rheap.h b/include/asm-ppc/rheap.h
new file mode 100644
index 000000000000..e6ca1f67cedc
--- /dev/null
+++ b/include/asm-ppc/rheap.h
@@ -0,0 +1,85 @@
+/*
+ * include/asm-ppc/rheap.c
+ *
+ * Header file for the implementation of a remote heap.
+ *
+ * Author: Pantelis Antoniou <panto@intracom.gr>
+ *
+ * 2004 (c) INTRACOM S.A. Greece. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#ifndef __ASM_PPC_RHEAP_H__
+#define __ASM_PPC_RHEAP_H__
+
+#include <linux/list.h>
+
+typedef struct _rh_block {
+        struct list_head list;
+        void *start;
+        int size;
+        const char *owner;
+} rh_block_t;
+
+typedef struct _rh_info {
+        unsigned int alignment;
+        int max_blocks;
+        int empty_slots;
+        rh_block_t *block;
+        struct list_head empty_list;
+        struct list_head free_list;
+        struct list_head taken_list;
+        unsigned int flags;
+} rh_info_t;
+
+#define RHIF_STATIC_INFO        0x1
+#define RHIF_STATIC_BLOCK       0x2
+
+typedef struct rh_stats_t {
+        void *start;
+        int size;
+        const char *owner;
+} rh_stats_t;
+
+#define RHGS_FREE       0
+#define RHGS_TAKEN      1
+
+/* Create a remote heap dynamically */
+extern rh_info_t *rh_create(unsigned int alignment);
+
+/* Destroy a remote heap, created by rh_create() */
+extern void rh_destroy(rh_info_t * info);
+
+/* Initialize in place a remote info block */
+extern void rh_init(rh_info_t * info, unsigned int alignment, int max_blocks,
+                    rh_block_t * block);
+
+/* Attach a free region to manage */
+extern int rh_attach_region(rh_info_t * info, void *start, int size);
+
+/* Detach a free region */
+extern void *rh_detach_region(rh_info_t * info, void *start, int size);
+
+/* Allocate the given size from the remote heap */
+extern void *rh_alloc(rh_info_t * info, int size, const char *owner);
+
+/* Allocate the given size from the given address */
+extern void *rh_alloc_fixed(rh_info_t * info, void *start, int size,
+                            const char *owner);
+
+/* Free the allocated area */
+extern int rh_free(rh_info_t * info, void *start);
+
+/* Get stats for debugging purposes */
+extern int rh_get_stats(rh_info_t * info, int what, int max_stats,
+                        rh_stats_t * stats);
+
+/* Simple dump of remote heap info */
+extern void rh_dump(rh_info_t * info);
+
+/* Set owner of taken block */
+extern int rh_set_owner(rh_info_t * info, void *start, const char *owner);
+
+#endif                          /* __ASM_PPC_RHEAP_H__ */