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9755f055f5
At least during hibernation the DPT mappings are lost with all stolen
memory content, so suspend/resume these mappings similarly to GGTT
mappings.
This fixes a problem where the restoring modeset during system resume fails
with pipe faults if a tiled framebuffer was active before suspend.
v2: Clarify the way restore works in intel_dpt_resume()'s Docbook entry.
(Chris)
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Vunny Sodhi <vunny.sodhi@intel.com>
Reported-and-tested-by: Vunny Sodhi <vunny.sodhi@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211101183551.3580546-2-imre.deak@intel.com
24 lines
614 B
C
24 lines
614 B
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2021 Intel Corporation
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*/
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#ifndef __INTEL_DPT_H__
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#define __INTEL_DPT_H__
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struct drm_i915_private;
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struct i915_address_space;
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struct i915_vma;
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struct intel_framebuffer;
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void intel_dpt_destroy(struct i915_address_space *vm);
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struct i915_vma *intel_dpt_pin(struct i915_address_space *vm);
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void intel_dpt_unpin(struct i915_address_space *vm);
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void intel_dpt_suspend(struct drm_i915_private *i915);
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void intel_dpt_resume(struct drm_i915_private *i915);
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struct i915_address_space *
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intel_dpt_create(struct intel_framebuffer *fb);
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#endif /* __INTEL_DPT_H__ */
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