Plumb in support for disabling kernel queues.
v2: use ring counts per Felix' suggestion
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c | 96 ++++++++++++++++----------
1 file changed, 58 insertions(+), 38 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
index 34cf187e72d9f..23ee4651cbffb 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
@@ -1421,11 +1421,13 @@ static int gfx_v12_0_sw_init(struct amdgpu_ip_block *ip_block)
break;
}
- /* recalculate compute rings to use based on hardware configuration */
- num_compute_rings = (adev->gfx.mec.num_pipe_per_mec *
- adev->gfx.mec.num_queue_per_pipe) / 2;
- adev->gfx.num_compute_rings = min(adev->gfx.num_compute_rings,
- num_compute_rings);
+ if (adev->gfx.num_compute_rings) {
+ /* recalculate compute rings to use based on hardware configuration */
+ num_compute_rings = (adev->gfx.mec.num_pipe_per_mec *
+ adev->gfx.mec.num_queue_per_pipe) / 2;
+ adev->gfx.num_compute_rings = min(adev->gfx.num_compute_rings,
+ num_compute_rings);
+ }
/* EOP Event */
r = amdgpu_irq_add_id(adev, SOC21_IH_CLIENTID_GRBM_CP,
@@ -1471,37 +1473,41 @@ static int gfx_v12_0_sw_init(struct amdgpu_ip_block *ip_block)
return r;
}
- /* set up the gfx ring */
- for (i = 0; i < adev->gfx.me.num_me; i++) {
- for (j = 0; j < adev->gfx.me.num_queue_per_pipe; j++) {
- for (k = 0; k < adev->gfx.me.num_pipe_per_me; k++) {
- if (!amdgpu_gfx_is_me_queue_enabled(adev, i, k, j))
- continue;
-
- r = gfx_v12_0_gfx_ring_init(adev, ring_id,
- i, k, j);
- if (r)
- return r;
- ring_id++;
+ if (adev->gfx.num_gfx_rings) {
+ /* set up the gfx ring */
+ for (i = 0; i < adev->gfx.me.num_me; i++) {
+ for (j = 0; j < adev->gfx.me.num_queue_per_pipe; j++) {
+ for (k = 0; k < adev->gfx.me.num_pipe_per_me; k++) {
+ if (!amdgpu_gfx_is_me_queue_enabled(adev, i, k, j))
+ continue;
+
+ r = gfx_v12_0_gfx_ring_init(adev, ring_id,
+ i, k, j);
+ if (r)
+ return r;
+ ring_id++;
+ }
}
}
}
- ring_id = 0;
- /* set up the compute queues - allocate horizontally across pipes */
- for (i = 0; i < adev->gfx.mec.num_mec; ++i) {
- for (j = 0; j < adev->gfx.mec.num_queue_per_pipe; j++) {
- for (k = 0; k < adev->gfx.mec.num_pipe_per_mec; k++) {
- if (!amdgpu_gfx_is_mec_queue_enabled(adev,
- 0, i, k, j))
- continue;
+ if (adev->gfx.num_compute_rings) {
+ ring_id = 0;
+ /* set up the compute queues - allocate horizontally across pipes */
+ for (i = 0; i < adev->gfx.mec.num_mec; ++i) {
+ for (j = 0; j < adev->gfx.mec.num_queue_per_pipe; j++) {
+ for (k = 0; k < adev->gfx.mec.num_pipe_per_mec; k++) {
+ if (!amdgpu_gfx_is_mec_queue_enabled(adev,
+ 0, i, k, j))
+ continue;
- r = gfx_v12_0_compute_ring_init(adev, ring_id,
- i, k, j);
- if (r)
- return r;
+ r = gfx_v12_0_compute_ring_init(adev, ring_id,
+ i, k, j);
+ if (r)
+ return r;
- ring_id++;
+ ring_id++;
+ }
}
}
}
@@ -3495,12 +3501,18 @@ static int gfx_v12_0_cp_resume(struct amdgpu_device *adev)
if (r)
return r;
- if (!amdgpu_async_gfx_ring) {
- r = gfx_v12_0_cp_gfx_resume(adev);
- if (r)
- return r;
+ if (adev->gfx.num_gfx_rings) {
+ if (!amdgpu_async_gfx_ring) {
+ r = gfx_v12_0_cp_gfx_resume(adev);
+ if (r)
+ return r;
+ } else {
+ r = gfx_v12_0_cp_async_gfx_ring_resume(adev);
+ if (r)
+ return r;
+ }
} else {
- r = gfx_v12_0_cp_async_gfx_ring_resume(adev);
+ r = gfx_v12_0_cp_gfx_start(adev);
if (r)
return r;
}
@@ -3809,11 +3821,19 @@ static int gfx_v12_0_early_init(struct amdgpu_ip_block *ip_block)
{
struct amdgpu_device *adev = ip_block->adev;
+ if (amdgpu_disable_kq == 1)
+ adev->gfx.disable_kq = true;
+
adev->gfx.funcs = &gfx_v12_0_gfx_funcs;
- adev->gfx.num_gfx_rings = GFX12_NUM_GFX_RINGS;
- adev->gfx.num_compute_rings = min(amdgpu_gfx_get_num_kcq(adev),
- AMDGPU_MAX_COMPUTE_RINGS);
+ if (adev->gfx.disable_kq) {
+ adev->gfx.num_gfx_rings = 0;
+ adev->gfx.num_compute_rings = 0;
+ } else {
+ adev->gfx.num_gfx_rings = GFX12_NUM_GFX_RINGS;
+ adev->gfx.num_compute_rings = min(amdgpu_gfx_get_num_kcq(adev),
+ AMDGPU_MAX_COMPUTE_RINGS);
+ }
gfx_v12_0_set_kiq_pm4_funcs(adev);
gfx_v12_0_set_ring_funcs(adev);
--
2.48.1
