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path: root/drivers/gpu/drm/nouveau/include/nvif/mmu.h
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Diffstat (limited to 'drivers/gpu/drm/nouveau/include/nvif/mmu.h')
-rw-r--r--drivers/gpu/drm/nouveau/include/nvif/mmu.h58
1 files changed, 58 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 000000000..2035ef1d3
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/include/nvif/mmu.h
@@ -0,0 +1,58 @@
+#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;
+ u8 kind_inv;
+ u16 kind_nr;
+ s32 mem;
+
+ 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_ctor(struct nvif_object *, const char *name, s32 oclass,
+ struct nvif_mmu *);
+void nvif_mmu_dtor(struct nvif_mmu *);
+
+static inline bool
+nvif_mmu_kind_valid(struct nvif_mmu *mmu, u8 kind)
+{
+ if (kind) {
+ if (kind >= mmu->kind_nr || mmu->kind[kind] == mmu->kind_inv)
+ 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