This is a note to let you know that I've just added the patch titled
drm/amdgpu: skip ASIC reset for APUs when go to S4
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amdgpu-skip-asic-reset-for-apus-when-go-to-s4.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b589626674de94d977e81c99bf7905872b991197 Mon Sep 17 00:00:00 2001
From: Tim Huang <tim.huang@xxxxxxx>
Date: Thu, 9 Mar 2023 16:27:51 +0800
Subject: drm/amdgpu: skip ASIC reset for APUs when go to S4
From: Tim Huang <tim.huang@xxxxxxx>
commit b589626674de94d977e81c99bf7905872b991197 upstream.
For GC IP v11.0.4/11, PSP TMR need to be reserved
for ASIC mode2 reset. But for S4, when psp suspend,
it will destroy the TMR that fails the ASIC reset.
[ 96.006101] amdgpu 0000:62:00.0: amdgpu: MODE2 reset
[ 100.409717] amdgpu 0000:62:00.0: amdgpu: SMU: I'm not done with your previous command: SMN_C2PMSG_66:0x00000011 SMN_C2PMSG_82:0x00000002
[ 100.411593] amdgpu 0000:62:00.0: amdgpu: Mode2 reset failed!
[ 100.412470] amdgpu 0000:62:00.0: PM: pci_pm_freeze(): amdgpu_pmops_freeze+0x0/0x50 [amdgpu] returns -62
[ 100.414020] amdgpu 0000:62:00.0: PM: dpm_run_callback(): pci_pm_freeze+0x0/0xd0 returns -62
[ 100.415311] amdgpu 0000:62:00.0: PM: pci_pm_freeze+0x0/0xd0 returned -62 after 4623202 usecs
[ 100.416608] amdgpu 0000:62:00.0: PM: failed to freeze async: error -62
We can skip the reset on APUs, assuming we can resume them
properly. Verified on some GFX11, GFX10 and old GFX9 APUs.
Signed-off-by: Tim Huang <tim.huang@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # 6.1.x
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -2457,7 +2457,10 @@ static int amdgpu_pmops_freeze(struct de
adev->in_s4 = false;
if (r)
return r;
- return amdgpu_asic_reset(adev);
+
+ if (amdgpu_acpi_should_gpu_reset(adev))
+ return amdgpu_asic_reset(adev);
+ return 0;
}
static int amdgpu_pmops_thaw(struct device *dev)
Patches currently in stable-queue which might be from tim.huang@xxxxxxx are
queue-6.2/drm-amdgpu-reposition-the-gpu-reset-checking-for-reuse.patch
queue-6.2/drm-amdgpu-skip-asic-reset-for-apus-when-go-to-s4.patch
