drm/i915/gt: Mark the GT as dead when mmio is unreliable

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After we detect that mmio is returning all 0xff, we believe that the GPU
has dropped off the pci bus and is dead. Mark the device as wedged such
that we can propagate the failure back to userspace and wait for
recovery.

Signed-off-by: Chris Wilson <chris.p.wilson@intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240807091014.469992-1-andi.shyti@linux.intel.com

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Chris Wilson 2024-08-07 10:10:14 +01:00 • committed by Andi Shyti

parent b7b930d104

commit a857add73e

4 changed files with 24 additions and 3 deletions

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6

drivers/gpu/drm/i915/gt/intel_gt.h

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2

drivers/gpu/drm/i915/gt/intel_gt_types.h

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12

drivers/gpu/drm/i915/gt/intel_reset.c

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7

drivers/gpu/drm/i915/intel_uncore.c

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