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Commit 94b568a9 authored by Alex Deucher's avatar Alex Deucher Committed by Greg Kroah-Hartman
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PCI: Mark all AMD Navi10 and Navi14 GPU ATS as broken

[ Upstream commit 3f1271b5 ]

There are enough VBIOS escapes without the proper workaround that some
users still hit this.  Microsoft never productized ATS on Windows so OEM
platforms that were Windows-only didn't always validate ATS.

The advantages of ATS are not worth it compared to the potential
instabilities on harvested boards.  Disable ATS on all Navi10 and Navi14
boards.

Symptoms include:

  amdgpu 0000:07:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x0007 address=0xffffc02000 flags=0x0000]
  AMD-Vi: Event logged [IO_PAGE_FAULT device=07:00.0 domain=0x0007 address=0xffffc02000 flags=0x0000]
  [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring sdma0 timeout, signaled seq=6047, emitted seq=6049
  amdgpu 0000:07:00.0: amdgpu: GPU reset begin!
  amdgpu 0000:07:00.0: amdgpu: GPU reset succeeded, trying to resume
  amdgpu 0000:07:00.0: [drm:amdgpu_ring_test_helper [amdgpu]] *ERROR* ring sdma0 test failed (-110)
  [drm:amdgpu_device_ip_resume_phase2 [amdgpu]] *ERROR* resume of IP block <sdma_v4_0> failed -110
  amdgpu 0000:07:00.0: amdgpu: GPU reset(1) failed

Related commits:

  e8946a53 ("PCI: Mark AMD Navi14 GPU ATS as broken")
  a2da5d8c ("PCI: Mark AMD Raven iGPU ATS as broken in some platforms")
  45beb31d ("PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken")
  5e89cd30 ("PCI: Mark AMD Navi14 GPU rev 0xc5 ATS as broken")
  d28ca864 ("PCI: Mark AMD Stoney Radeon R7 GPU ATS as broken")
  9b44b0b0 ("PCI: Mark AMD Stoney GPU ATS as broken")

[bhelgaas: add symptoms and related commits]
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1760
Link: https://lore.kernel.org/r/20220222160801.841643-1-alexander.deucher@amd.com


Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Acked-by: default avatarChristian König <christian.koenig@amd.com>
Acked-by: default avatarGuchun Chen <guchun.chen@amd.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent bb9795b6
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