From: Colin Xu <colin.xu@intel.com>
Date: Fri, 14 Sep 2018 15:12:23 +0800
Subject: drm/i915/gvt: Add GEN9_CLKGATE_DIS_4 to default BXT mmio handler
Git-commit: d817de3bc186c305b8e72a52547df2971c06499d
Patch-mainline: v4.19-rc5
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Host prints lots of untracked MMIO at 0x4653c when creating linux guest.
"gvt: vgpu 2: untracked MMIO 0004653c len 4"

GEN9_CLKGATE_DIS_4 (0x4653c) is accessed by i915 for gmbus clockgating.
However vgpu doesn't support any clockgating powergating operations
on related mmio access trap so need add it to default handler.
GEN9_CLKGATE_DIS_4 is accessed in bxt_gmbus_clock_gating() which only
applies to GEN9_LP so doens't show the warning on other platforms.

The solution is to add it to default handler init_bxt_mmio_info().

Reviewed-by: He, Min <min.he@intel.com>
Signed-off-by: Colin Xu <colin.xu@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/i915/gvt/handlers.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -3210,6 +3210,7 @@ static int init_bxt_mmio_info(struct int
 	MMIO_D(BXT_DSI_PLL_ENABLE, D_BXT);
 
 	MMIO_D(GEN9_CLKGATE_DIS_0, D_BXT);
+	MMIO_D(GEN9_CLKGATE_DIS_4, D_BXT);
 
 	MMIO_D(HSW_TVIDEO_DIP_GCP(TRANSCODER_A), D_BXT);
 	MMIO_D(HSW_TVIDEO_DIP_GCP(TRANSCODER_B), D_BXT);