xref: /OK3568_Linux_fs/kernel/drivers/gpu/drm/nouveau/include/nvif/mmu.h (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun #ifndef __NVIF_MMU_H__
2*4882a593Smuzhiyun #define __NVIF_MMU_H__
3*4882a593Smuzhiyun #include <nvif/object.h>
4*4882a593Smuzhiyun 
5*4882a593Smuzhiyun struct nvif_mmu {
6*4882a593Smuzhiyun 	struct nvif_object object;
7*4882a593Smuzhiyun 	u8  dmabits;
8*4882a593Smuzhiyun 	u8  heap_nr;
9*4882a593Smuzhiyun 	u8  type_nr;
10*4882a593Smuzhiyun 	u8  kind_inv;
11*4882a593Smuzhiyun 	u16 kind_nr;
12*4882a593Smuzhiyun 	s32 mem;
13*4882a593Smuzhiyun 
14*4882a593Smuzhiyun 	struct {
15*4882a593Smuzhiyun 		u64 size;
16*4882a593Smuzhiyun 	} *heap;
17*4882a593Smuzhiyun 
18*4882a593Smuzhiyun 	struct {
19*4882a593Smuzhiyun #define NVIF_MEM_VRAM                                                      0x01
20*4882a593Smuzhiyun #define NVIF_MEM_HOST                                                      0x02
21*4882a593Smuzhiyun #define NVIF_MEM_COMP                                                      0x04
22*4882a593Smuzhiyun #define NVIF_MEM_DISP                                                      0x08
23*4882a593Smuzhiyun #define NVIF_MEM_KIND                                                      0x10
24*4882a593Smuzhiyun #define NVIF_MEM_MAPPABLE                                                  0x20
25*4882a593Smuzhiyun #define NVIF_MEM_COHERENT                                                  0x40
26*4882a593Smuzhiyun #define NVIF_MEM_UNCACHED                                                  0x80
27*4882a593Smuzhiyun 		u8 type;
28*4882a593Smuzhiyun 		u8 heap;
29*4882a593Smuzhiyun 	} *type;
30*4882a593Smuzhiyun 
31*4882a593Smuzhiyun 	u8 *kind;
32*4882a593Smuzhiyun };
33*4882a593Smuzhiyun 
34*4882a593Smuzhiyun int nvif_mmu_ctor(struct nvif_object *, const char *name, s32 oclass,
35*4882a593Smuzhiyun 		  struct nvif_mmu *);
36*4882a593Smuzhiyun void nvif_mmu_dtor(struct nvif_mmu *);
37*4882a593Smuzhiyun 
38*4882a593Smuzhiyun static inline bool
nvif_mmu_kind_valid(struct nvif_mmu * mmu,u8 kind)39*4882a593Smuzhiyun nvif_mmu_kind_valid(struct nvif_mmu *mmu, u8 kind)
40*4882a593Smuzhiyun {
41*4882a593Smuzhiyun 	if (kind) {
42*4882a593Smuzhiyun 		if (kind >= mmu->kind_nr || mmu->kind[kind] == mmu->kind_inv)
43*4882a593Smuzhiyun 			return false;
44*4882a593Smuzhiyun 	}
45*4882a593Smuzhiyun 	return true;
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun 
48*4882a593Smuzhiyun static inline int
nvif_mmu_type(struct nvif_mmu * mmu,u8 mask)49*4882a593Smuzhiyun nvif_mmu_type(struct nvif_mmu *mmu, u8 mask)
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun 	int i;
52*4882a593Smuzhiyun 	for (i = 0; i < mmu->type_nr; i++) {
53*4882a593Smuzhiyun 		if ((mmu->type[i].type & mask) == mask)
54*4882a593Smuzhiyun 			return i;
55*4882a593Smuzhiyun 	}
56*4882a593Smuzhiyun 	return -EINVAL;
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun #endif
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