[PATCH 10/27] drm/amdgpu/gfx9.4.3: re-emit unprocessed state on kcq reset

[Alex Deucher]

Re-emit the unprocessed state after resetting the queue.

Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c 
b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c
index 05abe86ecd9ac..5323830691937 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c
@@ -3567,6 +3567,8 @@ static int gfx_v9_4_3_reset_kcq(struct amdgpu_ring *ring,
        if (!kiq->pmf || !kiq->pmf->kiq_unmap_queues)
                return -EINVAL;
 
+       amdgpu_ring_backup_unprocessed_commands(ring, guilty_fence);
+
        spin_lock_irqsave(&kiq->ring_lock, flags);
 
        if (amdgpu_ring_alloc(kiq_ring, kiq->pmf->unmap_queues_size)) {
@@ -3613,9 +3615,8 @@ static int gfx_v9_4_3_reset_kcq(struct amdgpu_ring *ring,
        }
        kiq->pmf->kiq_map_queues(kiq_ring, ring);
        amdgpu_ring_commit(kiq_ring);
-       spin_unlock_irqrestore(&kiq->ring_lock, flags);
-
        r = amdgpu_ring_test_ring(kiq_ring);
+       spin_unlock_irqrestore(&kiq->ring_lock, flags);
        if (r) {
                dev_err(adev->dev, "fail to remap queue\n");
                return r;
@@ -3624,8 +3625,15 @@ static int gfx_v9_4_3_reset_kcq(struct amdgpu_ring *ring,
        r = amdgpu_ring_test_ring(ring);
        if (r)
                return r;
-       amdgpu_fence_driver_force_completion(ring);
+
+       /* signal the fence of the bad job */
+       amdgpu_fence_driver_guilty_force_completion(guilty_fence);
        atomic_inc(&ring->adev->gpu_reset_counter);
+       r = amdgpu_ring_reemit_unprocessed_commands(ring);
+       if (r)
+               /* if we fail to reemit, force complete all fences */
+               amdgpu_fence_driver_force_completion(ring);
+
        return 0;
 }
 
-- 
2.49.0