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_init(struct nvif_object *, s32 oclass, struct nvif_mmu *);
  35 void nvif_mmu_fini(struct nvif_mmu *);
  36
  37 static inline bool
  38 nvif_mmu_kind_valid(struct nvif_mmu *mmu, u8 kind)
  39 {
  40         if (kind) {
  41                 if (kind >= mmu->kind_nr || mmu->kind[kind] == mmu->kind_inv)
  42                         return false;
  43         }
  44         return true;
  45 }
  46
  47 static inline int
  48 nvif_mmu_type(struct nvif_mmu *mmu, u8 mask)
  49 {
  50         int i;
  51         for (i = 0; i < mmu->type_nr; i++) {
  52                 if ((mmu->type[i].type & mask) == mask)
  53                         return i;
  54         }
  55         return -EINVAL;
  56 }
  57 #endif