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drm/amdgpu: define and add extra dword for jpeg ring

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Define extra dword for jpeg ring. Jpeg ring will allocate extra dword to store
the patch commands for fixing the known issue.

v2: dropping extra_dw for rings other than jpeg.

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Boyuan Zhang 2018-06-01 12:30:17 -04:00 committed by Alex Deucher
parent 8a998052f2
commit c8c1a1d2ef
3 changed files with 3 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
View file

@ -304,7 +304,7 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
0xffffffffffffffff : ring->buf_mask;
/* Allocate ring buffer */
if (ring->ring_obj == NULL) {
r = amdgpu_bo_create_kernel(adev, ring->ring_size, PAGE_SIZE,
r = amdgpu_bo_create_kernel(adev, ring->ring_size + ring->funcs->extra_dw, PAGE_SIZE,
AMDGPU_GEM_DOMAIN_GTT,
&ring->ring_obj,
&ring->gpu_addr,

1
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
View file

@ -113,6 +113,7 @@ struct amdgpu_ring_funcs {
u32 nop;
bool support_64bit_ptrs;
unsigned vmhub;
unsigned extra_dw;
/* ring read/write ptr handling */
u64 (*get_rptr)(struct amdgpu_ring *ring);

1
drivers/gpu/drm/amd/amdgpu/vcn_v1_0.c
View file

@ -1690,6 +1690,7 @@ static const struct amdgpu_ring_funcs vcn_v1_0_jpeg_ring_vm_funcs = {
.nop = PACKET0(0x81ff, 0),
.support_64bit_ptrs = false,
.vmhub = AMDGPU_MMHUB,
.extra_dw = 64,
.get_rptr = vcn_v1_0_jpeg_ring_get_rptr,
.get_wptr = vcn_v1_0_jpeg_ring_get_wptr,
.set_wptr = vcn_v1_0_jpeg_ring_set_wptr,