Commit 9e134ed7 authored by Alan Previn's avatar Alan Previn Committed by Radhakrishna Sripada
Browse files

drm/i915/pxp: On MTL, KCR enabling doesn't wait on tee component 



On legacy platforms, KCR HW enabling is done at the time the mei
component interface is bound. It's also disabled during unbind.
However, for MTL onwards, we don't depend on a tee component
to start sending GSC-CS firmware messages.

Thus, immediately enable (or disable) KCR HW on PXP's init,
fini and resume.

Signed-off-by: default avatarAlan Previn <alan.previn.teres.alexis@intel.com>
Reviewed-by: default avatarDaniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: default avatarRadhakrishna Sripada <radhakrishna.sripada@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230511231738.1077674-8-alan.previn.teres.alexis@intel.com
parent d1da138f

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

+14 −1
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
#include "gt/uc/intel_gsc_uc_heci_cmd_submit.h"



#include "i915_drv.h"

#include "intel_pxp.h"

#include "intel_pxp_cmd_interface_42.h"

#include "intel_pxp_cmd_interface_43.h"

#include "intel_pxp_gsccs.h"
@@ -422,10 +423,22 @@ gsccs_allocate_execution_resource(struct intel_pxp *pxp) 


void intel_pxp_gsccs_fini(struct intel_pxp *pxp)

{

	intel_wakeref_t wakeref;



	gsccs_destroy_execution_resource(pxp);

	with_intel_runtime_pm(&pxp->ctrl_gt->i915->runtime_pm, wakeref)

		intel_pxp_fini_hw(pxp);

}



int intel_pxp_gsccs_init(struct intel_pxp *pxp)

{

	return gsccs_allocate_execution_resource(pxp);

	int ret;

	intel_wakeref_t wakeref;



	ret = gsccs_allocate_execution_resource(pxp);

	if (!ret) {

		with_intel_runtime_pm(&pxp->ctrl_gt->i915->runtime_pm, wakeref)

			intel_pxp_init_hw(pxp);

	}

	return ret;

}

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

+2 −1
Original line number Diff line number Diff line
@@ -43,8 +43,9 @@ void intel_pxp_resume_complete(struct intel_pxp *pxp) 
	 * The PXP component gets automatically unbound when we go into S3 and

	 * re-bound after we come out, so in that scenario we can defer the

	 * hw init to the bind call.

	 * NOTE: GSC-CS backend doesn't rely on components.

	 */

	if (!pxp->pxp_component)

	if (!HAS_ENGINE(pxp->ctrl_gt, GSC0) && !pxp->pxp_component)

		return;



	intel_pxp_init_hw(pxp);