drivers/gpu/drm/nouveau/include/nvif/mmu.h

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