1 files changed, 104 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h
new file mode 100644
index 000000000000..3a5368776c31
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/mmu.h
@@ -0,0 +1,104 @@
+#ifndef __NVKM_MMU_H__
+#define __NVKM_MMU_H__
+#include <core/subdev.h>
+#include <core/mm.h>
+struct nvkm_device;
+struct nvkm_mem;
+
+struct nvkm_vm_pgt {
+	struct nvkm_gpuobj *obj[2];
+	u32 refcount[2];
+};
+
+struct nvkm_vm_pgd {
+	struct list_head head;
+	struct nvkm_gpuobj *obj;
+};
+
+struct nvkm_vma {
+	struct list_head head;
+	int refcount;
+	struct nvkm_vm *vm;
+	struct nvkm_mm_node *node;
+	u64 offset;
+	u32 access;
+};
+
+struct nvkm_vm {
+	struct nvkm_mmu *mmu;
+	struct nvkm_mm mm;
+	struct kref refcount;
+
+	struct list_head pgd_list;
+	atomic_t engref[NVDEV_SUBDEV_NR];
+
+	struct nvkm_vm_pgt *pgt;
+	u32 fpde;
+	u32 lpde;
+};
+
+struct nvkm_mmu {
+	struct nvkm_subdev base;
+
+	u64 limit;
+	u8  dma_bits;
+	u32 pgt_bits;
+	u8  spg_shift;
+	u8  lpg_shift;
+
+	int  (*create)(struct nvkm_mmu *, u64 offset, u64 length,
+		       u64 mm_offset, struct nvkm_vm **);
+
+	void (*map_pgt)(struct nvkm_gpuobj *pgd, u32 pde,
+			struct nvkm_gpuobj *pgt[2]);
+	void (*map)(struct nvkm_vma *, struct nvkm_gpuobj *,
+		    struct nvkm_mem *, u32 pte, u32 cnt,
+		    u64 phys, u64 delta);
+	void (*map_sg)(struct nvkm_vma *, struct nvkm_gpuobj *,
+		       struct nvkm_mem *, u32 pte, u32 cnt, dma_addr_t *);
+	void (*unmap)(struct nvkm_gpuobj *pgt, u32 pte, u32 cnt);
+	void (*flush)(struct nvkm_vm *);
+};
+
+static inline struct nvkm_mmu *
+nvkm_mmu(void *obj)
+{
+	return (void *)nvkm_subdev(obj, NVDEV_SUBDEV_MMU);
+}
+
+#define nvkm_mmu_create(p,e,o,i,f,d)                                      \
+	nvkm_subdev_create((p), (e), (o), 0, (i), (f), (d))
+#define nvkm_mmu_destroy(p)                                               \
+	nvkm_subdev_destroy(&(p)->base)
+#define nvkm_mmu_init(p)                                                  \
+	nvkm_subdev_init(&(p)->base)
+#define nvkm_mmu_fini(p,s)                                                \
+	nvkm_subdev_fini(&(p)->base, (s))
+
+#define _nvkm_mmu_dtor _nvkm_subdev_dtor
+#define _nvkm_mmu_init _nvkm_subdev_init
+#define _nvkm_mmu_fini _nvkm_subdev_fini
+
+extern struct nvkm_oclass nv04_mmu_oclass;
+extern struct nvkm_oclass nv41_mmu_oclass;
+extern struct nvkm_oclass nv44_mmu_oclass;
+extern struct nvkm_oclass nv50_mmu_oclass;
+extern struct nvkm_oclass gf100_mmu_oclass;
+
+int  nv04_vm_create(struct nvkm_mmu *, u64, u64, u64,
+		    struct nvkm_vm **);
+void nv04_mmu_dtor(struct nvkm_object *);
+
+int  nvkm_vm_create(struct nvkm_mmu *, u64 offset, u64 length, u64 mm_offset,
+		    u32 block, struct nvkm_vm **);
+int  nvkm_vm_new(struct nvkm_device *, u64 offset, u64 length, u64 mm_offset,
+		 struct nvkm_vm **);
+int  nvkm_vm_ref(struct nvkm_vm *, struct nvkm_vm **, struct nvkm_gpuobj *pgd);
+int  nvkm_vm_get(struct nvkm_vm *, u64 size, u32 page_shift, u32 access,
+		 struct nvkm_vma *);
+void nvkm_vm_put(struct nvkm_vma *);
+void nvkm_vm_map(struct nvkm_vma *, struct nvkm_mem *);
+void nvkm_vm_map_at(struct nvkm_vma *, u64 offset, struct nvkm_mem *);
+void nvkm_vm_unmap(struct nvkm_vma *);
+void nvkm_vm_unmap_at(struct nvkm_vma *, u64 offset, u64 length);
+#endif