From: Lang Yu <Lang.Yu@amd.com>
To: <amd-gfx@lists.freedesktop.org>
Cc: Alex Deucher <alexander.deucher@amd.com>,
Lang Yu <Lang.Yu@amd.com>, Lijo Lazar <lijo.lazar@amd.com>,
Huang Rui <ray.huang@amd.com>
Subject: [PATCH] drm/amdgpu: fix a potential GPU hang on cyan skillfish
Date: Fri, 28 Jan 2022 18:43:23 +0800 [thread overview]
Message-ID: <20220128104323.1565796-1-Lang.Yu@amd.com> (raw)
We observed a GPU hang when querying GMC CG state(i.e.,
cat amdgpu_pm_info) on cyan skillfish. Acctually, cyan
skillfish doesn't support any CG features.
Just prevent cyan skillfish from accessing GMC CG registers.
Signed-off-by: Lang Yu <Lang.Yu@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index 73ab0eebe4e2..bddaf2417344 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -1156,6 +1156,9 @@ static void gmc_v10_0_get_clockgating_state(void *handle, u32 *flags)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(10, 1, 3))
+ return;
+
adev->mmhub.funcs->get_clockgating(adev, flags);
if (adev->ip_versions[ATHUB_HWIP][0] >= IP_VERSION(2, 1, 0))
--
2.25.1
next reply other threads:[~2022-01-28 10:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-28 10:43 Lang Yu [this message]
2022-01-28 12:12 ` [PATCH] drm/amdgpu: fix a potential GPU hang on cyan skillfish Lazar, Lijo
2022-01-29 7:42 ` Huang Rui
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