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* [PATCH v2] drm/amdgpu: fix gfx hang during suspend with video playback (v2)
@ 2020-04-07 13:14 Prike Liang
  2020-04-07 14:55 ` Huang Rui
  2020-04-11 23:55 ` Johannes Hirte
  0 siblings, 2 replies; 8+ messages in thread
From: Prike Liang @ 2020-04-07 13:14 UTC (permalink / raw)
  To: amd-gfx; +Cc: Alexander.Deucher, Prike Liang, ray.huang, evan.quan

The system will be hang up during S3 suspend because of SMU is pending
for GC not respose the register CP_HQD_ACTIVE access request.This issue
root cause of accessing the GC register under enter GFX CGGPG and can
be fixed by disable GFX CGPG before perform suspend.

v2: Use disable the GFX CGPG instead of RLC safe mode guard.

Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Tested-by: Mengbing Wang <Mengbing.Wang@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 2e1f955..bf8735b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2440,8 +2440,6 @@ static int amdgpu_device_ip_suspend_phase1(struct amdgpu_device *adev)
 {
 	int i, r;
 
-	amdgpu_device_set_pg_state(adev, AMD_PG_STATE_UNGATE);
-	amdgpu_device_set_cg_state(adev, AMD_CG_STATE_UNGATE);
 
 	for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
 		if (!adev->ip_blocks[i].status.valid)
@@ -3470,6 +3468,9 @@ int amdgpu_device_suspend(struct drm_device *dev, bool fbcon)
 		}
 	}
 
+	amdgpu_device_set_pg_state(adev, AMD_PG_STATE_UNGATE);
+	amdgpu_device_set_cg_state(adev, AMD_CG_STATE_UNGATE);
+
 	amdgpu_amdkfd_suspend(adev, !fbcon);
 
 	amdgpu_ras_suspend(adev);
-- 
2.7.4

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^ permalink raw reply related	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2020-04-13  4:28 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2020-04-07 13:14 [PATCH v2] drm/amdgpu: fix gfx hang during suspend with video playback (v2) Prike Liang
2020-04-07 14:55 ` Huang Rui
2020-04-11 23:55 ` Johannes Hirte
2020-04-12  3:49   ` Liang, Prike
2020-04-12  6:58     ` Pan, Xinhui
2020-04-13  4:23       ` Liang, Prike
2020-04-13  4:28         ` Pan, Xinhui
2020-04-12 10:21     ` Johannes Hirte

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