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

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

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yong Zhao 2017-07-20 18:44:10 -04:00 committed by Alex Deucher
parent aef060e114
commit 330df03b3a
2 changed files with 12 additions and 5 deletions
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15
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
View file

@ -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;

2
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
View file

@ -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);