drm/i915/pxp: Implement arb session teardown

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Teardown is triggered when the display topology changes and no
long meets the secure playback requirement, and hardware trashes
all the encryption keys for display. Additionally, we want to emit a
teardown operation to make sure we're clean on boot and resume

v2: emit in the ring, use high prio request (Chris)
v3: better defines, stalling flush, cleaned up and renamed submission
    funcs (Chris)
v12: fix uninitialized variable bug

Signed-off-by: Huang, Sean Z <sean.z.huang@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210924191452.1539378-9-alan.previn.teres.alexis@intel.com

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This commit is contained in:

Huang, Sean Z 2021-09-24 12:14:43 -07:00 • committed by Rodrigo Vivi

parent cbbd3764b2

commit 95c9e1224d

7 changed files with 212 additions and 4 deletions

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1

drivers/gpu/drm/i915/Makefile

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22

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

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7

drivers/gpu/drm/i915/pxp/intel_pxp.c

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141

drivers/gpu/drm/i915/pxp/intel_pxp_cmd.c

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15

drivers/gpu/drm/i915/pxp/intel_pxp_cmd.h

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29

drivers/gpu/drm/i915/pxp/intel_pxp_session.c

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1

drivers/gpu/drm/i915/pxp/intel_pxp_session.h

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