Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / powerpc / include / asm / rheap.h

diff --git a/kernel/arch/powerpc/include/asm/rheap.h b/kernel/arch/powerpc/include/asm/rheap.h
new file mode 100644 (file)
index 0000000..1723817
--- /dev/null
+++ b/kernel/arch/powerpc/include/asm/rheap.h
@@ -0,0 +1,89 @@
+/*
+ * include/asm-ppc/rheap.h
+ *
+ * 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;
+       unsigned long 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 {
+       unsigned long 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, unsigned long start, int size);
+
+/* Detach a free region */
+extern unsigned long rh_detach_region(rh_info_t * info, unsigned long start, int size);
+
+/* Allocate the given size from the remote heap (with alignment) */
+extern unsigned long rh_alloc_align(rh_info_t * info, int size, int alignment,
+               const char *owner);
+
+/* Allocate the given size from the remote heap */
+extern unsigned long rh_alloc(rh_info_t * info, int size, const char *owner);
+
+/* Allocate the given size from the given address */
+extern unsigned long rh_alloc_fixed(rh_info_t * info, unsigned long start, int size,
+                           const char *owner);
+
+/* Free the allocated area */
+extern int rh_free(rh_info_t * info, unsigned long 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, unsigned long start, const char *owner);
+
+#endif                         /* __ASM_PPC_RHEAP_H__ */