Implement the intel_pxp_gem_object_status() to allow i915 display
querying the current PXP session state. In the design, display
should not perform protection flip on the protected buffers if
there is no PXP session alive.
Signed-off-by: Huang, Sean Z <sean.z.huang@xxxxxxxxx>
---
drivers/gpu/drm/i915/pxp/intel_pxp.c | 9 +++++++++
drivers/gpu/drm/i915/pxp/intel_pxp.h | 8 ++++++++
2 files changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.c b/drivers/gpu/drm/i915/pxp/intel_pxp.c
index e67b1f302b78..0bca99523089 100644
--- a/drivers/gpu/drm/i915/pxp/intel_pxp.c
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp.c
@@ -153,3 +153,12 @@ void intel_pxp_irq_handler(struct intel_pxp *pxp, u16 iir)
pxp->current_events |= events;
schedule_work(&pxp->irq_work);
}
+
+bool intel_pxp_gem_object_status(struct drm_i915_private *i915)
+{
+ if (i915->gt.pxp.ctx.inited &&
+ i915->gt.pxp.ctx.flag_display_hm_surface_keys)
+ return true;
+ else
+ return false;
+}
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp.h b/drivers/gpu/drm/i915/pxp/intel_pxp.h
index cdaa6ce6fdca..976baf9b08e3 100644
--- a/drivers/gpu/drm/i915/pxp/intel_pxp.h
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp.h
@@ -29,6 +29,8 @@ enum pxp_protection_modes {
PROTECTION_MODE_ALL
};
+struct drm_i915_private;
+
#ifdef CONFIG_DRM_I915_PXP
void intel_pxp_irq_handler(struct intel_pxp *pxp, u16 iir);
int i915_pxp_teardown_required_callback(struct intel_pxp *pxp);
@@ -36,6 +38,7 @@ int i915_pxp_global_terminate_complete_callback(struct intel_pxp *pxp);
void intel_pxp_init(struct intel_pxp *pxp);
void intel_pxp_fini(struct intel_pxp *pxp);
+bool intel_pxp_gem_object_status(struct drm_i915_private *i915);
#else
static inline void intel_pxp_irq_handler(struct intel_pxp *pxp, u16 iir)
{
@@ -58,6 +61,11 @@ static inline void intel_pxp_init(struct intel_pxp *pxp)
static inline void intel_pxp_fini(struct intel_pxp *pxp)
{
}
+
+static inline bool intel_pxp_gem_object_status(struct drm_i915_private *i915)
+{
+ return false;
+}
#endif
#endif /* __INTEL_PXP_H__ */
--
2.17.1
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