Commit c5d86c19 authored by Andi Shyti's avatar Andi Shyti
Browse files

drm/i915: Increase FLR timeout from 3s to 9s 



Following the guidelines it takes 3 seconds to perform an FLR
reset. Let's give it a bit more slack because this time can
change depending on the platform and on the firmware

Signed-off-by: default avatarAndi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: default avatarNirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240523235853.171796-1-andi.shyti@linux.intel.com
parent a09d2327

drivers/gpu/drm/i915/intel_uncore.c

+8 −1
Original line number Diff line number Diff line
@@ -2614,11 +2614,18 @@ void intel_uncore_prune_engine_fw_domains(struct intel_uncore *uncore, 
static void driver_initiated_flr(struct intel_uncore *uncore)

{

	struct drm_i915_private *i915 = uncore->i915;

	const unsigned int flr_timeout_ms = 3000; /* specs recommend a 3s wait */

	unsigned int flr_timeout_ms;

	int ret;



	drm_dbg(&i915->drm, "Triggering Driver-FLR\n");



	/*

	 * The specification recommends a 3 seconds FLR reset timeout. To be

	 * cautious, we will extend this to 9 seconds, three times the specified

	 * timeout.

	 */

	flr_timeout_ms = 9000;



	/*

	 * Make sure any pending FLR requests have cleared by waiting for the

	 * FLR trigger bit to go to zero. Also clear GU_DEBUG's DRIVERFLR_STATUS