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Commit bd3b3004 authored by Michel Thierry's avatar Michel Thierry Committed by Chris Wilson
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drm/i915/tgl: Report valid VDBoxes with SFC capability 



In Gen11, only even numbered "logical" VDBoxes are hooked up to a SFC
(Scaler & Format Converter) unit. This is not the case in Tigerlake,
where each VDBox can access a SFC.

We will use this information to decide when the SFC units need to be reset
and also pass it to the GuC.

Bspec: 48077
Signed-off-by: default avatarMichel Thierry <michel.thierry@intel.com>
Signed-off-by: default avatarDaniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190731004902.34672-5-daniele.ceraolospurio@intel.com
parent 2833ddcc

drivers/gpu/drm/i915/intel_device_info.c

+2 −1
Original line number Diff line number Diff line
@@ -1022,8 +1022,9 @@ void intel_device_info_init_mmio(struct drm_i915_private *dev_priv) 
		/*

		 * In Gen11, only even numbered logical VDBOXes are

		 * hooked up to an SFC (Scaler & Format Converter) unit.

		 * In TGL each VDBOX has access to an SFC.

		 */

		if (logical_vdbox++ % 2 == 0)

		if (IS_TIGERLAKE(dev_priv) || logical_vdbox++ % 2 == 0)

			RUNTIME_INFO(dev_priv)->vdbox_sfc_access |= BIT(i);

	}

	DRM_DEBUG_DRIVER("vdbox enable: %04x, instances: %04lx\n",