Bug 109303

The CI Bug Log issue associated to this bug has been updated.

### New filters associated

* ICL: igt@i915_query@query-topology-known-pci-ids - skip - Test requirement: IS_HASWELL(devid) || IS_BROADWELL(devid) || IS_SKYLAKE(devid) ||
  - https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5388/shard-iclb2/igt@i915_query@query-topology-known-pci-ids.html

(In reply to Martin Peres from comment #0)
> https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5388/shard-iclb2/
> igt@i915_query@query-topology-known-pci-ids.html
> 
> Test requirement: IS_HASWELL(devid) || IS_BROADWELL(devid) ||
> IS_SKYLAKE(devid) || IS_KABYLAKE(devid) || IS_COFFEELAKE(devid)
> Subtest query-topology-known-pci-ids: SKIP (0.000s)
> 
> I doubt that this would only be supported on these platforms and not on CNL
> and ICL.

It does only support haswell/gen8/gen9 because that's the only place where based off the GT we can deduct the number of slices/subslices and do some actual checks on the values returned by i915.
On gen10+ fusing is a lot more fuzzy.

One way to extend coverage would be to beef up lib/intel_device_info.c to contain information about the topology of the device.

Thoughts welcome.

(In reply to Lionel Landwerlin from comment #2)
> (In reply to Martin Peres from comment #0)
> > https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5388/shard-iclb2/
> > igt@i915_query@query-topology-known-pci-ids.html
> > 
> > Test requirement: IS_HASWELL(devid) || IS_BROADWELL(devid) ||
> > IS_SKYLAKE(devid) || IS_KABYLAKE(devid) || IS_COFFEELAKE(devid)
> > Subtest query-topology-known-pci-ids: SKIP (0.000s)
> > 
> > I doubt that this would only be supported on these platforms and not on CNL
> > and ICL.
> 
> It does only support haswell/gen8/gen9 because that's the only place where
> based off the GT we can deduct the number of slices/subslices and do some
> actual checks on the values returned by i915.
> On gen10+ fusing is a lot more fuzzy.
> 
> One way to extend coverage would be to beef up lib/intel_device_info.c to
> contain information about the topology of the device.

Not really, I think. The purpose of the topology i915_query is precisely to retrieve the more flexible configurations that are not simply defined in static pci-id tables.

So long as we have sanity checks on the ioctl to catch garbage returns; along with the static checks to make sure known configs are reported, that seems like we have our boundary conditions covered.

If were possible to use the topology and verify that matches hw, that would be a useful test (I presume that would also closely match use).

(In reply to Chris Wilson from comment #3)
> (In reply to Lionel Landwerlin from comment #2)
> > (In reply to Martin Peres from comment #0)
> > > https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5388/shard-iclb2/
> > > igt@i915_query@query-topology-known-pci-ids.html
> > > 
> > > Test requirement: IS_HASWELL(devid) || IS_BROADWELL(devid) ||
> > > IS_SKYLAKE(devid) || IS_KABYLAKE(devid) || IS_COFFEELAKE(devid)
> > > Subtest query-topology-known-pci-ids: SKIP (0.000s)
> > > 
> > > I doubt that this would only be supported on these platforms and not on CNL
> > > and ICL.
> > 
> > It does only support haswell/gen8/gen9 because that's the only place where
> > based off the GT we can deduct the number of slices/subslices and do some
> > actual checks on the values returned by i915.
> > On gen10+ fusing is a lot more fuzzy.
> > 
> > One way to extend coverage would be to beef up lib/intel_device_info.c to
> > contain information about the topology of the device.
> 
> Not really, I think. The purpose of the topology i915_query is precisely to
> retrieve the more flexible configurations that are not simply defined in
> static pci-id tables.
> 
> So long as we have sanity checks on the ioctl to catch garbage returns;
> along with the static checks to make sure known configs are reported, that
> seems like we have our boundary conditions covered.
> 
> If were possible to use the topology and verify that matches hw, that would
> be a useful test (I presume that would also closely match use).

(In reply to Lionel Landwerlin from comment #2)
> (In reply to Martin Peres from comment #0)
> > https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5388/shard-iclb2/
> > igt@i915_query@query-topology-known-pci-ids.html
> > 
> > Test requirement: IS_HASWELL(devid) || IS_BROADWELL(devid) ||
> > IS_SKYLAKE(devid) || IS_KABYLAKE(devid) || IS_COFFEELAKE(devid)
> > Subtest query-topology-known-pci-ids: SKIP (0.000s)
> > 
> > I doubt that this would only be supported on these platforms and not on CNL
> > and ICL.
> 
> It does only support haswell/gen8/gen9 because that's the only place where
> based off the GT we can deduct the number of slices/subslices and do some
> actual checks on the values returned by i915.
> On gen10+ fusing is a lot more fuzzy.
> 
> One way to extend coverage would be to beef up lib/intel_device_info.c to
> contain information about the topology of the device.
> 
> Thoughts welcome.

Thanks for the info! Maybe you could create a Jira to implement something like Chris is describing so we don't forget about this gap in coverage?

A CI Bug Log filter associated to this bug has been updated:

{- ICL: igt@i915_query@query-topology-known-pci-ids - skip - Test requirement: IS_HASWELL(devid) || IS_BROADWELL(devid) || IS_SKYLAKE(devid) || -}
{+ CML ICL: igt@i915_query@query-topology-known-pci-ids - skip - Test requirement: IS_HASWELL(devid) || IS_BROADWELL(devid) || IS_SKYLAKE(devid) || +}

New failures caught by the filter:

  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_265/fi-cml-u/igt@i915_query@query-topology-known-pci-ids.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_266/fi-cml-u/igt@i915_query@query-topology-known-pci-ids.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_267/fi-cml-u/igt@i915_query@query-topology-known-pci-ids.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_268/fi-cml-u/igt@i915_query@query-topology-known-pci-ids.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_269/fi-cml-u/igt@i915_query@query-topology-known-pci-ids.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6001/re-cml-u/igt@i915_query@query-topology-known-pci-ids.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_270/fi-cml-u/igt@i915_query@query-topology-known-pci-ids.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6010/re-cml-u/igt@i915_query@query-topology-known-pci-ids.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6012/re-cml-u/igt@i915_query@query-topology-known-pci-ids.html

A CI Bug Log filter associated to this bug has been updated:

{- CML ICL: igt@i915_query@query-topology-known-pci-ids - skip - Test requirement: IS_HASWELL(devid) || IS_BROADWELL(devid) || IS_SKYLAKE(devid) || -}
{+ CML ICL TGL: igt@i915_query@query-topology-known-pci-ids - skip - Test requirement: IS_HASWELL(devid) || IS_BROADWELL(devid) || IS_SKYLAKE(devid) || +}

New failures caught by the filter:

  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_362/fi-tgl-u/igt@i915_query@query-topology-known-pci-ids.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_363/fi-tgl-u/igt@i915_query@query-topology-known-pci-ids.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_364/fi-tgl-u/igt@i915_query@query-topology-known-pci-ids.html