From: Colin Xu Date: Wed, 19 Aug 2020 01:09:00 +0000 (+0800) Subject: drm/i915/gvt: Init vreg GUC_STATUS to GS_MIA_IN_RESET X-Git-Tag: v5.10-rc1~123^2~12^2~41^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=df398e33b8fd3ac28b3c7166de555e38d26e7391;p=thirdparty%2Fkernel%2Flinux.git drm/i915/gvt: Init vreg GUC_STATUS to GS_MIA_IN_RESET Although GVT doesn't support guest GuC, MIA core is still expected to be GS_MIA_IN_RESET after uc HW reset. Reviewed-by: Zhenyu Wang Signed-off-by: Colin Xu Signed-off-by: Zhenyu Wang Link: http://patchwork.freedesktop.org/patch/msgid/20200819010900.54598-1-colin.xu@intel.com --- diff --git a/drivers/gpu/drm/i915/gvt/mmio.c b/drivers/gpu/drm/i915/gvt/mmio.c index 291993615af99..b6811f6a230df 100644 --- a/drivers/gpu/drm/i915/gvt/mmio.c +++ b/drivers/gpu/drm/i915/gvt/mmio.c @@ -251,6 +251,9 @@ void intel_vgpu_reset_mmio(struct intel_vgpu *vgpu, bool dmlr) /* set the bit 0:2(Core C-State ) to C0 */ vgpu_vreg_t(vgpu, GEN6_GT_CORE_STATUS) = 0; + /* uc reset hw expect GS_MIA_IN_RESET */ + vgpu_vreg_t(vgpu, GUC_STATUS) |= GS_MIA_IN_RESET; + if (IS_BROXTON(vgpu->gvt->gt->i915)) { vgpu_vreg_t(vgpu, BXT_P_CR_GT_DISP_PWRON) &= ~(BIT(0) | BIT(1));