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Commit 330df03b authored by Yong Zhao's avatar Yong Zhao Committed by Alex Deucher
Browse files

drm/amdgpu: Add support for filling a buffer with 64 bit value 



That function will be used later to support setting a page table
block with 64 bit value.

Signed-off-by: default avatarYong Zhao <Yong.Zhao@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent aef060e1

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

+11 −4
Original line number Diff line number Diff line
@@ -1509,11 +1509,12 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset, 
}



int amdgpu_fill_buffer(struct amdgpu_bo *bo,

		       uint32_t src_data,

		       uint64_t src_data,

		       struct reservation_object *resv,

		       struct dma_fence **fence)

{

	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);

	/* max_bytes applies to SDMA_OP_PTEPDE as well as SDMA_OP_CONST_FILL*/

	uint32_t max_bytes = adev->mman.buffer_funcs->fill_max_bytes;

	struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
@@ -1545,7 +1546,9 @@ int amdgpu_fill_buffer(struct amdgpu_bo *bo, 
		num_pages -= mm_node->size;

		++mm_node;

	}

	num_dw = num_loops * adev->mman.buffer_funcs->fill_num_dw;



	/* 10 double words for each SDMA_OP_PTEPDE cmd */

	num_dw = num_loops * 10;



	/* for IB padding */

	num_dw += 64;
@@ -1570,12 +1573,16 @@ int amdgpu_fill_buffer(struct amdgpu_bo *bo, 
		uint32_t byte_count = mm_node->size << PAGE_SHIFT;

		uint64_t dst_addr;



		WARN_ONCE(byte_count & 0x7, "size should be a multiple of 8");



		dst_addr = amdgpu_mm_node_addr(&bo->tbo, mm_node, &bo->tbo.mem);

		while (byte_count) {

			uint32_t cur_size_in_bytes = min(byte_count, max_bytes);



			amdgpu_emit_fill_buffer(adev, &job->ibs[0], src_data,

						dst_addr, cur_size_in_bytes);

			amdgpu_vm_set_pte_pde(adev, &job->ibs[0],

					dst_addr, 0,

					cur_size_in_bytes >> 3, 0,

					src_data);



			dst_addr += cur_size_in_bytes;

			byte_count -= cur_size_in_bytes;

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

+1 −1
Original line number Diff line number Diff line
@@ -73,7 +73,7 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring, uint64_t src_offset, 
		       struct dma_fence **fence, bool direct_submit,

		       bool vm_needs_flush);

int amdgpu_fill_buffer(struct amdgpu_bo *bo,

			uint32_t src_data,

			uint64_t src_data,

			struct reservation_object *resv,

			struct dma_fence **fence);