1 /*	$NetBSD: mmu.h,v 1.2 2021/12/18 23:45:33 riastradh Exp $	*/
2 
3 #ifndef __NVIF_MMU_H__
4 #define __NVIF_MMU_H__
5 #include <nvif/object.h>
6 
7 struct nvif_mmu {
8 	struct nvif_object object;
9 	u8  dmabits;
10 	u8  heap_nr;
11 	u8  type_nr;
12 	u8  kind_inv;
13 	u16 kind_nr;
14 	s32 mem;
15 
16 	struct {
17 		u64 size;
18 	} *heap;
19 
20 	struct {
21 #define NVIF_MEM_VRAM                                                      0x01
22 #define NVIF_MEM_HOST                                                      0x02
23 #define NVIF_MEM_COMP                                                      0x04
24 #define NVIF_MEM_DISP                                                      0x08
25 #define NVIF_MEM_KIND                                                      0x10
26 #define NVIF_MEM_MAPPABLE                                                  0x20
27 #define NVIF_MEM_COHERENT                                                  0x40
28 #define NVIF_MEM_UNCACHED                                                  0x80
29 		u8 type;
30 		u8 heap;
31 	} *type;
32 
33 	u8 *kind;
34 };
35 
36 int nvif_mmu_init(struct nvif_object *, s32 oclass, struct nvif_mmu *);
37 void nvif_mmu_fini(struct nvif_mmu *);
38 
39 static inline bool
nvif_mmu_kind_valid(struct nvif_mmu * mmu,u8 kind)40 nvif_mmu_kind_valid(struct nvif_mmu *mmu, u8 kind)
41 {
42 	if (kind) {
43 		if (kind >= mmu->kind_nr || mmu->kind[kind] == mmu->kind_inv)
44 			return false;
45 	}
46 	return true;
47 }
48 
49 static inline int
nvif_mmu_type(struct nvif_mmu * mmu,u8 mask)50 nvif_mmu_type(struct nvif_mmu *mmu, u8 mask)
51 {
52 	int i;
53 	for (i = 0; i < mmu->type_nr; i++) {
54 		if ((mmu->type[i].type & mask) == mask)
55 			return i;
56 	}
57 	return -EINVAL;
58 }
59 #endif
60