drm/i915/mtl: add initial definitions for GSC CS
Starting on MTL, the GSC is no longer managed with direct MMIO access,
but we instead have a dedicated command streamer for it. As a first step
for adding support for this CS, add the required definitions.
Note that, although it is now a CS, the GSC retains its old
class:instance value (OTHER_CLASS instance 6)
Bspec: 65308, 45605
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221102171047.2787951-2-daniele.ceraolospurio@intel.com
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 1c0da50..d056c31 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -970,6 +970,7 @@
#define GEN11_VEBOX2_RING_BASE 0x1d8000
#define XEHP_VEBOX3_RING_BASE 0x1e8000
#define XEHP_VEBOX4_RING_BASE 0x1f8000
+#define MTL_GSC_RING_BASE 0x11a000
#define GEN12_COMPUTE0_RING_BASE 0x1a000
#define GEN12_COMPUTE1_RING_BASE 0x1c000
#define GEN12_COMPUTE2_RING_BASE 0x1e000
