drm/amdgpu: separate VM PT handling into amdgpu_vm_pt.c

Separate the VM page table backend operations from the state machine since
the amdgpu_vm.c file is becoming to complex.

The allocating, freeing and updating page tables and page directories can
easily be moved into a separate file.

While at it cleanup everything checkpatch.pl reported and rename the
functions a bit to make more clear that they belong together.
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/Makefile

@@ -49,7 +49,7 @@ amdgpu-y += amdgpu_device.o amdgpu_kms.o \
 	amdgpu_cs.o amdgpu_bios.o amdgpu_benchmark.o \
 	atombios_dp.o amdgpu_afmt.o amdgpu_trace_points.o \
 	atombios_encoders.o amdgpu_sa.o atombios_i2c.o \
-	amdgpu_dma_buf.o amdgpu_vm.o amdgpu_ib.o amdgpu_pll.o \
+	amdgpu_dma_buf.o amdgpu_vm.o amdgpu_vm_pt.o amdgpu_ib.o amdgpu_pll.o \
 	amdgpu_ucode.o amdgpu_bo_list.o amdgpu_ctx.o amdgpu_sync.o \
 	amdgpu_gtt_mgr.o amdgpu_preempt_mgr.o amdgpu_vram_mgr.o amdgpu_virt.o \
 	amdgpu_atomfirmware.o amdgpu_vf_error.o amdgpu_sched.o \

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h

@@ -397,6 +397,8 @@ int amdgpu_vm_clear_freed(struct amdgpu_device *adev,
 			  struct dma_fence **fence);
 int amdgpu_vm_handle_moved(struct amdgpu_device *adev,
 			   struct amdgpu_vm *vm);
+void amdgpu_vm_bo_base_init(struct amdgpu_vm_bo_base *base,
+			    struct amdgpu_vm *vm, struct amdgpu_bo *bo);
 int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
 				struct amdgpu_device *bo_adev,
 				struct amdgpu_vm *vm, bool immediate,
@@ -458,6 +460,20 @@ void amdgpu_vm_del_from_lru_notify(struct ttm_buffer_object *bo);
 void amdgpu_vm_get_memory(struct amdgpu_vm *vm, uint64_t *vram_mem,
 				uint64_t *gtt_mem, uint64_t *cpu_mem);
 
+int amdgpu_vm_pt_clear(struct amdgpu_device *adev, struct amdgpu_vm *vm,
+		       struct amdgpu_bo_vm *vmbo, bool immediate);
+int amdgpu_vm_pt_create(struct amdgpu_device *adev, struct amdgpu_vm *vm,
+			int level, bool immediate, struct amdgpu_bo_vm **vmbo);
+void amdgpu_vm_pt_free_root(struct amdgpu_device *adev, struct amdgpu_vm *vm);
+bool amdgpu_vm_pt_is_root_clean(struct amdgpu_device *adev,
+				struct amdgpu_vm *vm);
+
+int amdgpu_vm_pde_update(struct amdgpu_vm_update_params *params,
+			 struct amdgpu_vm_bo_base *entry);
+int amdgpu_vm_ptes_update(struct amdgpu_vm_update_params *params,
+			  uint64_t start, uint64_t end,
+			  uint64_t dst, uint64_t flags);
+
 #if defined(CONFIG_DEBUG_FS)
 void amdgpu_debugfs_vm_bo_info(struct amdgpu_vm *vm, struct seq_file *m);
 #endif