drm/amdgpu/gfx12: adjust KGQ reset sequence

Kernel gfx queues do not need to be reinitialized or
remapped after a reset.  Align with gfx11.

v2: preserve init and remap for MMIO case.

Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 0a6d6ed694d72b66b0ed7a483d5effa01acd3951)
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
index fbc100778f970fa37ed9ff831b3298465746854a..4aab89a9ab4011e7602d2a1ec179299d0c1de78f 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c
@@ -5297,11 +5297,12 @@ static int gfx_v12_0_reset_kgq(struct amdgpu_ring *ring,
                               struct amdgpu_fence *timedout_fence)
 {
        struct amdgpu_device *adev = ring->adev;
+       bool use_mmio = false;
        int r;
 
        amdgpu_ring_reset_helper_begin(ring, timedout_fence);
 
-       r = amdgpu_mes_reset_legacy_queue(ring->adev, ring, vmid, false);
+       r = amdgpu_mes_reset_legacy_queue(ring->adev, ring, vmid, use_mmio);
        if (r) {
                dev_warn(adev->dev, "reset via MES failed and try pipe reset %d\n", r);
                r = gfx_v12_reset_gfx_pipe(ring);
@@ -5309,16 +5310,18 @@ static int gfx_v12_0_reset_kgq(struct amdgpu_ring *ring,
                        return r;
        }
 
-       r = gfx_v12_0_kgq_init_queue(ring, true);
-       if (r) {
-               dev_err(adev->dev, "failed to init kgq\n");
-               return r;
-       }
+       if (use_mmio) {
+               r = gfx_v12_0_kgq_init_queue(ring, true);
+               if (r) {
+                       dev_err(adev->dev, "failed to init kgq\n");
+                       return r;
+               }
 
-       r = amdgpu_mes_map_legacy_queue(adev, ring);
-       if (r) {
-               dev_err(adev->dev, "failed to remap kgq\n");
-               return r;
+               r = amdgpu_mes_map_legacy_queue(adev, ring);
+               if (r) {
+                       dev_err(adev->dev, "failed to remap kgq\n");
+                       return r;
+               }
        }
 
        return amdgpu_ring_reset_helper_end(ring, timedout_fence);