diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/include/nvif/mmu.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/include/nvif/mmu.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvif/mmu.h b/drivers/gpu/drm/nouveau/include/nvif/mmu.h new file mode 100644 index 000000000000..c8cd5b5b0688 --- /dev/null +++ b/drivers/gpu/drm/nouveau/include/nvif/mmu.h @@ -0,0 +1,56 @@ +#ifndef __NVIF_MMU_H__ +#define __NVIF_MMU_H__ +#include <nvif/object.h> + +struct nvif_mmu { + struct nvif_object object; + u8 dmabits; + u8 heap_nr; + u8 type_nr; + u16 kind_nr; + + struct { + u64 size; + } *heap; + + struct { +#define NVIF_MEM_VRAM 0x01 +#define NVIF_MEM_HOST 0x02 +#define NVIF_MEM_COMP 0x04 +#define NVIF_MEM_DISP 0x08 +#define NVIF_MEM_KIND 0x10 +#define NVIF_MEM_MAPPABLE 0x20 +#define NVIF_MEM_COHERENT 0x40 +#define NVIF_MEM_UNCACHED 0x80 + u8 type; + u8 heap; + } *type; + + u8 *kind; +}; + +int nvif_mmu_init(struct nvif_object *, s32 oclass, struct nvif_mmu *); +void nvif_mmu_fini(struct nvif_mmu *); + +static inline bool +nvif_mmu_kind_valid(struct nvif_mmu *mmu, u8 kind) +{ + const u8 invalid = mmu->kind_nr - 1; + if (kind) { + if (kind >= mmu->kind_nr || mmu->kind[kind] == invalid) + return false; + } + return true; +} + +static inline int +nvif_mmu_type(struct nvif_mmu *mmu, u8 mask) +{ + int i; + for (i = 0; i < mmu->type_nr; i++) { + if ((mmu->type[i].type & mask) == mask) + return i; + } + return -EINVAL; +} +#endif |