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        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
  33int nvif_mmu_init(struct nvif_object *, s32 oclass, struct nvif_mmu *);
  34void nvif_mmu_fini(struct nvif_mmu *);
  35
  36static inline bool
  37nvif_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
  47static inline int
  48nvif_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
  58