diff options
| author | Anshuman Gupta <anshuman.gupta@intel.com> | 2021-09-24 12:14:48 -0700 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2021-10-04 13:11:16 -0400 |
| commit | ef6ba31dd3840588418e70f4dd63ce6022e1a254 (patch) | |
| tree | dd11eac66e79206833246a81f706c152e24163e2 /drivers/gpu/drm/i915/pxp | |
| parent | 0cfab4cb3c4e90c1c2f4b18c0b8ac4cb946808c8 (diff) | |
drm/i915/pxp: Add plane decryption support
Add support to enable/disable PLANE_SURF Decryption Request bit.
It requires only to enable plane decryption support when following
condition met.
1. PXP session is enabled.
2. Buffer object is protected.
v2:
- Used gen fb obj user_flags instead gem_object_metadata. [Krishna]
v3:
- intel_pxp_gem_object_status() API changes.
v4: use intel_pxp_is_active (Daniele)
v5: rebase and use the new protected object status checker (Daniele)
v6: used plane state for plane_decryption to handle async flip
as suggested by Ville.
v7: check pxp session while plane decrypt state computation. [Ville]
removed pointless code. [Ville]
v8 (Daniele): update PXP check
v9: move decrypt check after icl_check_nv12_planes() when overlays
have fb set (Juston)
v10 (Daniele): update PXP check again to match rework in earlier
patches and don't consider protection valid if the object has not
been used in an execbuf beforehand.
Cc: Bommu Krishnaiah <krishnaiah.bommu@intel.com>
Cc: Huang Sean Z <sean.z.huang@intel.com>
Cc: Gaurav Kumar <kumar.gaurav@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Juston Li <juston.li@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com> #v9
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210924191452.1539378-14-alan.previn.teres.alexis@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/pxp')
| -rw-r--r-- | drivers/gpu/drm/i915/pxp/intel_pxp.c | 9 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/pxp/intel_pxp.h | 7 |
2 files changed, 11 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.c b/drivers/gpu/drm/i915/pxp/intel_pxp.c index 7f241c0218c1..b85b72f12726 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp.c +++ b/drivers/gpu/drm/i915/pxp/intel_pxp.c @@ -191,7 +191,9 @@ void intel_pxp_fini_hw(struct intel_pxp *pxp) intel_pxp_irq_disable(pxp); } -int intel_pxp_key_check(struct intel_pxp *pxp, struct drm_i915_gem_object *obj) +int intel_pxp_key_check(struct intel_pxp *pxp, + struct drm_i915_gem_object *obj, + bool assign) { if (!intel_pxp_is_active(pxp)) return -ENODEV; @@ -207,9 +209,10 @@ int intel_pxp_key_check(struct intel_pxp *pxp, struct drm_i915_gem_object *obj) * as such. If the object is already encrypted, check instead if the * used key is still valid. */ - if (!obj->pxp_key_instance) + if (!obj->pxp_key_instance && assign) obj->pxp_key_instance = pxp->key_instance; - else if (obj->pxp_key_instance != pxp->key_instance) + + if (obj->pxp_key_instance != pxp->key_instance) return -ENOEXEC; return 0; diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.h b/drivers/gpu/drm/i915/pxp/intel_pxp.h index bce0014d9ff9..aa262258d4d4 100644 --- a/drivers/gpu/drm/i915/pxp/intel_pxp.h +++ b/drivers/gpu/drm/i915/pxp/intel_pxp.h @@ -29,7 +29,9 @@ void intel_pxp_mark_termination_in_progress(struct intel_pxp *pxp); int intel_pxp_start(struct intel_pxp *pxp); -int intel_pxp_key_check(struct intel_pxp *pxp, struct drm_i915_gem_object *obj); +int intel_pxp_key_check(struct intel_pxp *pxp, + struct drm_i915_gem_object *obj, + bool assign); void intel_pxp_invalidate(struct intel_pxp *pxp); #else @@ -52,7 +54,8 @@ static inline bool intel_pxp_is_active(const struct intel_pxp *pxp) } static inline int intel_pxp_key_check(struct intel_pxp *pxp, - struct drm_i915_gem_object *obj) + struct drm_i915_gem_object *obj, + bool assign) { return -ENODEV; } |