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drm/amdgpu: implement amdgpu_fill_buffer()

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so that bo could be set to some pattern

Signed-off-by: Flora Cui <Flora.Cui@amd.com>
Reviewed-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Flora Cui 2016-07-19 16:48:22 +08:00 committed by Alex Deucher
parent 309889098c
commit 59b4a97742
2 changed files with 67 additions and 0 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View file

@ -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 {

62
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
View file

@ -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)