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drm/amdgpu: put MQDs in VRAM

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Reduces preemption latency.
Only enable this for gfx10 and 11 for now
to avoid changing behavior on gfx 8 and 9.

v2: move MES MQDs into VRAM as well (YuBiao)
v3: enable on gfx10, 11 only (Alex)
v4: minor style changes, document why gfx10/11 only (Alex)

Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2023-04-26 15:30:13 -04:00
parent 967a66396e
commit 1cfb4d6121
3 changed files with 9 additions and 2 deletions
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9
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
View file

@ -382,6 +382,11 @@ int amdgpu_gfx_mqd_sw_init(struct amdgpu_device *adev,
int r, i, j; int r, i, j;
struct amdgpu_kiq *kiq = &adev->gfx.kiq[xcc_id]; struct amdgpu_kiq *kiq = &adev->gfx.kiq[xcc_id];
struct amdgpu_ring *ring = &kiq->ring; struct amdgpu_ring *ring = &kiq->ring;
u32 domain = AMDGPU_GEM_DOMAIN_GTT;
/* Only enable on gfx10 and 11 for now to avoid changing behavior on older chips */
if (adev->ip_versions[GC_HWIP][0] >= IP_VERSION(10, 0, 0))
domain |= AMDGPU_GEM_DOMAIN_VRAM;
/* create MQD for KIQ */ /* create MQD for KIQ */
if (!adev->enable_mes_kiq && !ring->mqd_obj) { if (!adev->enable_mes_kiq && !ring->mqd_obj) {
@ -413,7 +418,7 @@ int amdgpu_gfx_mqd_sw_init(struct amdgpu_device *adev,
ring = &adev->gfx.gfx_ring[i]; ring = &adev->gfx.gfx_ring[i];
if (!ring->mqd_obj) { if (!ring->mqd_obj) {
r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE, r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj, domain, &ring->mqd_obj,
&ring->mqd_gpu_addr, &ring->mqd_ptr); &ring->mqd_gpu_addr, &ring->mqd_ptr);
if (r) { if (r) {
dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r); dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r);
@ -435,7 +440,7 @@ int amdgpu_gfx_mqd_sw_init(struct amdgpu_device *adev,
ring = &adev->gfx.compute_ring[j]; ring = &adev->gfx.compute_ring[j];
if (!ring->mqd_obj) { if (!ring->mqd_obj) {
r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE, r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj, domain, &ring->mqd_obj,
&ring->mqd_gpu_addr, &ring->mqd_ptr); &ring->mqd_gpu_addr, &ring->mqd_ptr);
if (r) { if (r) {
dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r); dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r);

1
drivers/gpu/drm/amd/amdgpu/mes_v10_1.c
View file

@ -901,6 +901,7 @@ static int mes_v10_1_mqd_sw_init(struct amdgpu_device *adev,
return 0; return 0;
r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE, r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
AMDGPU_GEM_DOMAIN_VRAM |
AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj, AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj,
&ring->mqd_gpu_addr, &ring->mqd_ptr); &ring->mqd_gpu_addr, &ring->mqd_ptr);
if (r) { if (r) {

1
drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
View file

@ -999,6 +999,7 @@ static int mes_v11_0_mqd_sw_init(struct amdgpu_device *adev,
return 0; return 0;
r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE, r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
AMDGPU_GEM_DOMAIN_VRAM |
AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj, AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj,
&ring->mqd_gpu_addr, &ring->mqd_ptr); &ring->mqd_gpu_addr, &ring->mqd_ptr);
if (r) { if (r) {