so that bo could be set to some pattern
Change-Id: Iee7b7b28801e4c696b5d217a5d2ffc224dbe0cba
Signed-off-by: Flora Cui <flora....@amd.com>
Reviewed-by: Chunming Zhou <david1.z...@amd.com>
Reviewed-by: Christian König <christian.koe...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 5 +++
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 62 +++++++++++++++++++++++++++++++++
2 files changed, 67 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 459e136..a1c51f6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -432,6 +432,11 @@ 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 {
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index f85527f..56bbd83 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1202,6 +1202,68 @@ error_free:
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)
--
1.9.1
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