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

   1#ifndef __NVIF_MMU_H__
   2#define __NVIF_MMU_H__
   3#include <nvif/object.h>
   4
   5struct 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
  34int nvif_mmu_ctor(struct nvif_object *, const char *name, s32 oclass,
  35                  struct nvif_mmu *);
  36void nvif_mmu_dtor(struct nvif_mmu *);
  37
  38static inline bool
  39nvif_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
  48static inline int
  49nvif_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
  59