drm/i915/pxp: Implement funcs to create the TEE channel

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Implement the funcs to create the TEE channel, so kernel can
send the TEE commands directly to TEE for creating the arbitrary
(default) session.

v2: fix locking, don't pollute dev_priv (Chris)

v3: wait for mei PXP component to be bound.

v4: drop the wait, as the component might be bound after i915 load
completes. We'll instead check when sending a tee message.

v5: fix an issue with mei_pxp module removal

v6: don't use fetch_and_zero in fini (Rodrigo)

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/20210924191452.1539378-6-alan.previn.teres.alexis@intel.com

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This commit is contained in:

Huang, Sean Z 2021-09-24 12:14:40 -07:00 • committed by Rodrigo Vivi

parent 3ad2dd9c4c

commit 0436ac1b00

5 changed files with 112 additions and 1 deletions

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3

drivers/gpu/drm/i915/Makefile

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13

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

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79

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

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14

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

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4

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

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