1
2#ifndef __NVKM_MM_H__
3#define __NVKM_MM_H__
4#include <core/os.h>
5
6struct nvkm_mm_node {
7 struct list_head nl_entry;
8 struct list_head fl_entry;
9 struct nvkm_mm_node *next;
10
11#define NVKM_MM_HEAP_ANY 0x00
12 u8 heap;
13#define NVKM_MM_TYPE_NONE 0x00
14#define NVKM_MM_TYPE_HOLE 0xff
15 u8 type;
16 u32 offset;
17 u32 length;
18};
19
20struct nvkm_mm {
21 struct list_head nodes;
22 struct list_head free;
23
24 u32 block_size;
25 int heap_nodes;
26};
27
28static inline bool
29nvkm_mm_initialised(struct nvkm_mm *mm)
30{
31 return mm->heap_nodes;
32}
33
34int nvkm_mm_init(struct nvkm_mm *, u8 heap, u32 offset, u32 length, u32 block);
35int nvkm_mm_fini(struct nvkm_mm *);
36int nvkm_mm_head(struct nvkm_mm *, u8 heap, u8 type, u32 size_max,
37 u32 size_min, u32 align, struct nvkm_mm_node **);
38int nvkm_mm_tail(struct nvkm_mm *, u8 heap, u8 type, u32 size_max,
39 u32 size_min, u32 align, struct nvkm_mm_node **);
40void nvkm_mm_free(struct nvkm_mm *, struct nvkm_mm_node **);
41void nvkm_mm_dump(struct nvkm_mm *, const char *);
42
43static inline u32
44nvkm_mm_heap_size(struct nvkm_mm *mm, u8 heap)
45{
46 struct nvkm_mm_node *node;
47 u32 size = 0;
48 list_for_each_entry(node, &mm->nodes, nl_entry) {
49 if (node->heap == heap)
50 size += node->length;
51 }
52 return size;
53}
54
55static inline bool
56nvkm_mm_contiguous(struct nvkm_mm_node *node)
57{
58 return !node->next;
59}
60
61static inline u32
62nvkm_mm_addr(struct nvkm_mm_node *node)
63{
64 if (WARN_ON(!nvkm_mm_contiguous(node)))
65 return 0;
66 return node->offset;
67}
68
69static inline u32
70nvkm_mm_size(struct nvkm_mm_node *node)
71{
72 u32 size = 0;
73 do {
74 size += node->length;
75 } while ((node = node->next));
76 return size;
77}
78#endif
79
