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         u16 kind_nr;
  11         s32 mem;
  12
  13         struct {
  14                 u64 size;
  15         } *heap;
  16
  17         struct {
  18 #define NVIF_MEM_VRAM                                                      0x01
  19 #define NVIF_MEM_HOST                                                      0x02
  20 #define NVIF_MEM_COMP                                                      0x04
  21 #define NVIF_MEM_DISP                                                      0x08
  22 #define NVIF_MEM_KIND                                                      0x10
  23 #define NVIF_MEM_MAPPABLE                                                  0x20
  24 #define NVIF_MEM_COHERENT                                                  0x40
  25 #define NVIF_MEM_UNCACHED                                                  0x80
  26                 u8 type;
  27                 u8 heap;
  28         } *type;
  29
  30         u8 *kind;
  31 };
  32
  33 int nvif_mmu_init(struct nvif_object *, s32 oclass, struct nvif_mmu *);
  34 void nvif_mmu_fini(struct nvif_mmu *);
  35
  36 static inline bool
  37 nvif_mmu_kind_valid(struct nvif_mmu *mmu, u8 kind)
  38 {
  39         const u8 invalid = mmu->kind_nr - 1;
  40         if (kind) {
  41                 if (kind >= mmu->kind_nr || mmu->kind[kind] == invalid)
  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