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drm/i915: Always try to reset the GPU on takeover

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When we first introduced the reset to sanitize the GPU on taking over
from the BIOS and before returning control to third parties (the BIOS!),
we restricted it to only systems utilizing HW contexts as we were
uncertain of how stable our reset mechanism truly was. We now have
reasonable coverage across all machines that expose a GPU reset method,
and so we should be safe to sanitize the GPU state everywhere.

v2: We _have_ to skip the reset if it would clobber the display.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190103112104.19561-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2019-01-03 11:21:04 +00:00
parent 57428bccdb
commit 55277e1f31
8 changed files with 26 additions and 15 deletions
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2
drivers/gpu/drm/i915/intel_ringbuffer.h
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@@ -1019,7 +1019,7 @@ gen8_emit_ggtt_write(u32 *cs, u32 value, u32 gtt_offset)
return cs;
}
void intel_engines_sanitize(struct drm_i915_private *i915);
void intel_engines_sanitize(struct drm_i915_private *i915, bool force);
bool intel_engine_is_idle(struct intel_engine_cs *engine);
bool intel_engines_are_idle(struct drm_i915_private *dev_priv);