[PATCH] drm/i915/gvt: Init vreg GUC_STATUS to GS_MIA_IN_RESET
Colin Xu
colin.xu at intel.com
Wed Aug 19 01:09:00 UTC 2020
Although GVT doesnt' support guest GuC, MIA core is still expected
to be GS_MIA_IN_RESET after uc HW reset.
Signed-off-by: Colin Xu <colin.xu at intel.com>
---
drivers/gpu/drm/i915/gvt/mmio.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/gvt/mmio.c b/drivers/gpu/drm/i915/gvt/mmio.c
index 291993615af9..b6811f6a230d 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));
--
2.28.0
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