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

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
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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,