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Commit 59b4a977 authored by Flora Cui's avatar Flora Cui Committed by Alex Deucher
Browse files

drm/amdgpu: implement amdgpu_fill_buffer() 



so that bo could be set to some pattern

Signed-off-by: default avatarFlora Cui <Flora.Cui@amd.com>
Reviewed-by: default avatarChunming Zhou <David1.Zhou@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 30988909

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

+5 −0
Original line number Diff line number Diff line
@@ -435,6 +435,11 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring, 
		       uint32_t byte_count,

		       struct reservation_object *resv,

		       struct fence **fence);

int amdgpu_fill_buffer(struct amdgpu_bo *bo,

			uint32_t src_data,

			struct reservation_object *resv,

			struct fence **fence);



int amdgpu_mmap(struct file *filp, struct vm_area_struct *vma);



struct amdgpu_bo_list_entry {

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

+62 −0
Original line number Diff line number Diff line
@@ -1207,6 +1207,68 @@ int amdgpu_copy_buffer(struct amdgpu_ring *ring, 
	return r;

}



int amdgpu_fill_buffer(struct amdgpu_bo *bo,

		uint32_t src_data,

		struct reservation_object *resv,

		struct fence **fence)

{

	struct amdgpu_device *adev = bo->adev;

	struct amdgpu_job *job;

	struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;



	uint32_t max_bytes, byte_count;

	uint64_t dst_offset;

	unsigned int num_loops, num_dw;

	unsigned int i;

	int r;



	byte_count = bo->tbo.num_pages << PAGE_SHIFT;

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

	num_loops = DIV_ROUND_UP(byte_count, max_bytes);

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



	/* for IB padding */

	while (num_dw & 0x7)

		num_dw++;



	r = amdgpu_job_alloc_with_ib(adev, num_dw * 4, &job);

	if (r)

		return r;



	if (resv) {

		r = amdgpu_sync_resv(adev, &job->sync, resv,

				AMDGPU_FENCE_OWNER_UNDEFINED);

		if (r) {

			DRM_ERROR("sync failed (%d).\n", r);

			goto error_free;

		}

	}



	dst_offset = bo->tbo.mem.start << PAGE_SHIFT;

	for (i = 0; i < num_loops; i++) {

		uint32_t cur_size_in_bytes = min(byte_count, max_bytes);



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

				dst_offset, cur_size_in_bytes);



		dst_offset += cur_size_in_bytes;

		byte_count -= cur_size_in_bytes;

	}



	amdgpu_ring_pad_ib(ring, &job->ibs[0]);

	WARN_ON(job->ibs[0].length_dw > num_dw);

	r = amdgpu_job_submit(job, ring, &adev->mman.entity,

			AMDGPU_FENCE_OWNER_UNDEFINED, fence);

	if (r)

		goto error_free;



	return 0;



error_free:

	amdgpu_job_free(job);

	return r;

}



#if defined(CONFIG_DEBUG_FS)



static int amdgpu_mm_dump_table(struct seq_file *m, void *data)