This series enables PXP on MTL. On ADL/TGL platforms, we rely on the mei driver via the i915-mei PXP component interface to establish a connection to the security firmware via the HECI device interface. That interface is used to create and teardown the PXP ARB session. PXP ARB session is created when protected contexts are created. In this series, the front end behaviors and interfaces (uapi) remain the same. We add backend support for MTL but with MTL we directly use the GSC-CS engine on the MTL GPU device to send messages to the PXP (a.k.a. GSC a.k.a graphics-security) firmware. With MTL, the format of the message is slightly different with a 2-layer packetization that is explained in detail in Patch #4. Also, the second layer which is the actual PXP firmware packet is now rev'd to version 4.3 for MTL that is defined in Patch #6. Alan Previn (9): drm/i915/pxp: Add MTL PXP GSC-CS back-end skeleton drm/i915/pxp: Add GSC-CS back-end resource init and cleanup drm/i915/pxp: Add MTL hw-plumbing enabling for KCR operation drm/i915/pxp: Add MTL helpers to submit Heci-Cmd-Packet to GSC drm/i915/pxp: Add GSC-CS backend to send GSC fw messages drm/i915/pxp: Add ARB session creation with new PXP API Ver4.3 drm/i915/pxp: MTL-KCR interrupt ctrl's are in GT-0 drm/i915/pxp: On MTL, KCR enabling doesn't wait on tee component drm/i915/pxp: Enable PXP with MTL-GSC-CS drivers/gpu/drm/i915/Makefile | 2 + drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 2 + drivers/gpu/drm/i915/gt/intel_gt_irq.c | 3 +- .../i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c | 128 ++++++ .../i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h | 74 ++++ drivers/gpu/drm/i915/i915_pci.c | 1 + drivers/gpu/drm/i915/pxp/intel_pxp.c | 92 ++++- drivers/gpu/drm/i915/pxp/intel_pxp.h | 4 +- .../drm/i915/pxp/intel_pxp_cmd_interface_43.h | 27 +- drivers/gpu/drm/i915/pxp/intel_pxp_debugfs.c | 2 +- drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.c | 379 ++++++++++++++++++ drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h | 18 + drivers/gpu/drm/i915/pxp/intel_pxp_irq.c | 23 +- drivers/gpu/drm/i915/pxp/intel_pxp_irq.h | 8 + drivers/gpu/drm/i915/pxp/intel_pxp_pm.c | 10 +- drivers/gpu/drm/i915/pxp/intel_pxp_regs.h | 26 ++ drivers/gpu/drm/i915/pxp/intel_pxp_session.c | 37 +- drivers/gpu/drm/i915/pxp/intel_pxp_tee.c | 13 +- drivers/gpu/drm/i915/pxp/intel_pxp_types.h | 11 + 19 files changed, 804 insertions(+), 56 deletions(-) create mode 100644 drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.c create mode 100644 drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_heci_cmd_submit.h create mode 100644 drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.c create mode 100644 drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h create mode 100644 drivers/gpu/drm/i915/pxp/intel_pxp_regs.h base-commit: cc44a1e87ea6b788868878295119398966f98a81 -- 2.39.0
