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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NVKM_MM_H__
#define __NVKM_MM_H__
#include <core/os.h>
struct nvkm_mm_node {
struct list_head nl_entry;
struct list_head fl_entry;
struct nvkm_mm_node *next;
#define NVKM_MM_HEAP_ANY 0x00
u8 heap;
#define NVKM_MM_TYPE_NONE 0x00
#define NVKM_MM_TYPE_HOLE 0xff
u8 type;
u32 offset;
u32 length;
};
struct nvkm_mm {
struct list_head nodes;
struct list_head free;
u32 block_size;
int heap_nodes;
};
static inline bool
nvkm_mm_initialised(struct nvkm_mm *mm)
{
return mm->heap_nodes;
}
int nvkm_mm_init(struct nvkm_mm *, u8 heap, u32 offset, u32 length, u32 block);
int nvkm_mm_fini(struct nvkm_mm *);
int nvkm_mm_head(struct nvkm_mm *, u8 heap, u8 type, u32 size_max,
u32 size_min, u32 align, struct nvkm_mm_node **);
int nvkm_mm_tail(struct nvkm_mm *, u8 heap, u8 type, u32 size_max,
u32 size_min, u32 align, struct nvkm_mm_node **);
void nvkm_mm_free(struct nvkm_mm *, struct nvkm_mm_node **);
void nvkm_mm_dump(struct nvkm_mm *, const char *);
static inline u32
nvkm_mm_heap_size(struct nvkm_mm *mm, u8 heap)
{
struct nvkm_mm_node *node;
u32 size = 0;
list_for_each_entry(node, &mm->nodes, nl_entry) {
if (node->heap == heap)
size += node->length;
}
return size;
}
static inline bool
nvkm_mm_contiguous(struct nvkm_mm_node *node)
{
return !node->next;
}
static inline u32
nvkm_mm_addr(struct nvkm_mm_node *node)
{
if (WARN_ON(!nvkm_mm_contiguous(node)))
return 0;
return node->offset;
}
static inline u32
nvkm_mm_size(struct nvkm_mm_node *node)
{
u32 size = 0;
do {
size += node->length;
} while ((node = node->next));
return size;
}
#endif
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