[PATCH 1/1] drm/amdgpu: wrap kiq ring ops with kiq spinlock
Nirmoy Das
nirmoy.das at amd.com
Fri Mar 12 17:08:10 UTC 2021
KIQ ring is being operated by kfd as well as amdgpu.
KFD is using kiq lock, we should the same from amdgpu side
as well.
Signed-off-by: Nirmoy Das <nirmoy.das at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index 1915b9b95106..892dc6b269fb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -462,20 +462,25 @@ int amdgpu_gfx_disable_kcq(struct amdgpu_device *adev)
{
struct amdgpu_kiq *kiq = &adev->gfx.kiq;
struct amdgpu_ring *kiq_ring = &kiq->ring;
- int i;
+ int i, r;
if (!kiq->pmf || !kiq->pmf->kiq_unmap_queues)
return -EINVAL;
+ spin_lock(&adev->gfx.kiq.ring_lock);
if (amdgpu_ring_alloc(kiq_ring, kiq->pmf->unmap_queues_size *
- adev->gfx.num_compute_rings))
+ adev->gfx.num_compute_rings)) {
+ spin_unlock(&adev->gfx.kiq.ring_lock);
return -ENOMEM;
+ }
for (i = 0; i < adev->gfx.num_compute_rings; i++)
kiq->pmf->kiq_unmap_queues(kiq_ring, &adev->gfx.compute_ring[i],
RESET_QUEUES, 0, 0);
+ r = amdgpu_ring_test_helper(kiq_ring);
+ spin_unlock(&adev->gfx.kiq.ring_lock);
- return amdgpu_ring_test_helper(kiq_ring);
+ return r;
}
int amdgpu_queue_mask_bit_to_set_resource_bit(struct amdgpu_device *adev,
@@ -518,12 +523,13 @@ int amdgpu_gfx_enable_kcq(struct amdgpu_device *adev)
DRM_INFO("kiq ring mec %d pipe %d q %d\n", kiq_ring->me, kiq_ring->pipe,
kiq_ring->queue);
-
+ spin_lock(&adev->gfx.kiq.ring_lock);
r = amdgpu_ring_alloc(kiq_ring, kiq->pmf->map_queues_size *
adev->gfx.num_compute_rings +
kiq->pmf->set_resources_size);
if (r) {
DRM_ERROR("Failed to lock KIQ (%d).\n", r);
+ spin_unlock(&adev->gfx.kiq.ring_lock);
return r;
}
@@ -532,6 +538,7 @@ int amdgpu_gfx_enable_kcq(struct amdgpu_device *adev)
kiq->pmf->kiq_map_queues(kiq_ring, &adev->gfx.compute_ring[i]);
r = amdgpu_ring_test_helper(kiq_ring);
+ spin_unlock(&adev->gfx.kiq.ring_lock);
if (r)
DRM_ERROR("KCQ enable failed\n");
--
2.30.1
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