The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x df3c7dc5c58b1f85033d2cd9a121b27844700ca2 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2024061934-endanger-autism-856a@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^..
Possible dependencies:
df3c7dc5c58b ("drm/amdgpu: Reset dGPU if suspend got aborted") 71199aa47bbc ("drm/amdgpu: add soc21 common ip block v2") 0d055f09e121 ("drm/amdgpu: drop navi reg init functions") bf99b9b03265 ("drm/amdgpu: drop nv_set_ip_blocks()") f76f795a8ffa ("drm/amdgpu: move headless sku check into harvest function") 3f68c01be9a2 ("drm/amd/display: add cyan_skillfish display support") 59066d0083d2 ("drm/amdgpu: handle VCN instances when harvesting (v2)") 733ee71ae0d0 ("drm/amdgpu: replace dce_virtual with amdgpu_vkms (v3)") fd922f7a0e90 ("drm/amdgpu: cleanup dce_virtual") 84ec374bd580 ("drm/amdgpu: create amdgpu_vkms (v4)") 641df0990487 ("drm/amdgpu: enable SMU for cyan_skilfish") 1c7916af55a7 ("drm/amdgpu: enable psp v11.0.8 for cyan_skillfish") 338b3cf0b9f8 ("drm/amdgpu: add nbio support for cyan_skillfish") f36fb5a0e361 ("drm/amdgpu: set ip blocks for cyan_skillfish") 708391977be5 ("drm/amdgpu: dynamic initialize ip offset for cyan_skillfish") 46ddb8965882 ("drm/amd/display: implement workaround for riommu related hang") 9604b74bff62 ("drm/amdgpu: Correct the irq numbers for virtual crtc") 8fe44c080a53 ("drm/amdgpu/display: fold DRM_AMD_DC_DCN3_1 into DRM_AMD_DC_DCN") 30adeee52d1e ("drm/amd/display: Enforce DPCD Address ranges") c5bc8c1bd4c7 ("drm/amd/display: Read LTTPR caps first on bootup")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From df3c7dc5c58b1f85033d2cd9a121b27844700ca2 Mon Sep 17 00:00:00 2001 From: Lijo Lazar lijo.lazar@amd.com Date: Wed, 14 Feb 2024 17:55:54 +0530 Subject: [PATCH] drm/amdgpu: Reset dGPU if suspend got aborted
For SOC21 ASICs, there is an issue in re-enabling PM features if a suspend got aborted. In such cases, reset the device during resume phase. This is a workaround till a proper solution is finalized.
Signed-off-by: Lijo Lazar lijo.lazar@amd.com Reviewed-by: Alex Deucher alexander.deucher@amd.com Reviewed-by: Yang Wang kevinyang.wang@amd.com Reviewed-by: Hawking Zhang Hawking.Zhang@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org
diff --git a/drivers/gpu/drm/amd/amdgpu/soc21.c b/drivers/gpu/drm/amd/amdgpu/soc21.c index 8526282f4da1..abe319b0f063 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc21.c +++ b/drivers/gpu/drm/amd/amdgpu/soc21.c @@ -867,10 +867,35 @@ static int soc21_common_suspend(void *handle) return soc21_common_hw_fini(adev); }
+static bool soc21_need_reset_on_resume(struct amdgpu_device *adev) +{ + u32 sol_reg1, sol_reg2; + + /* Will reset for the following suspend abort cases. + * 1) Only reset dGPU side. + * 2) S3 suspend got aborted and TOS is active. + */ + if (!(adev->flags & AMD_IS_APU) && adev->in_s3 && + !adev->suspend_complete) { + sol_reg1 = RREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_81); + msleep(100); + sol_reg2 = RREG32_SOC15(MP0, 0, regMP0_SMN_C2PMSG_81); + + return (sol_reg1 != sol_reg2); + } + + return false; +} + static int soc21_common_resume(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ if (soc21_need_reset_on_resume(adev)) { + dev_info(adev->dev, "S3 suspend aborted, resetting..."); + soc21_asic_reset(adev); + } + return soc21_common_hw_init(adev); }