From f24940e00062f47f1e45fb20c405c2ed6bc006a3 Mon Sep 17 00:00:00 2001 From: Ping Gao Date: Thu, 27 Oct 2016 14:37:41 +0800 Subject: [PATCH] drm/i915/gvt: correct the emulation in TLB control handler Need a explicit write_vreg in TLB MMIO write handler, beside that TLB vreg should update correspondingly following HW status to do correct emulation. Signed-off-by: Ping Gao Signed-off-by: Zhenyu Wang --- drivers/gpu/drm/i915/gvt/handlers.c | 2 ++ drivers/gpu/drm/i915/gvt/render.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c index 0b62f4621a85..2d97fb78343e 100644 --- a/drivers/gpu/drm/i915/gvt/handlers.c +++ b/drivers/gpu/drm/i915/gvt/handlers.c @@ -1370,6 +1370,8 @@ static int gvt_reg_tlb_control_handler(struct intel_vgpu *vgpu, int rc = 0; unsigned int id = 0; + write_vreg(vgpu, offset, p_data, bytes); + switch (offset) { case 0x4260: id = RCS; diff --git a/drivers/gpu/drm/i915/gvt/render.c b/drivers/gpu/drm/i915/gvt/render.c index 3af894b3d257..44136b1f3aab 100644 --- a/drivers/gpu/drm/i915/gvt/render.c +++ b/drivers/gpu/drm/i915/gvt/render.c @@ -152,6 +152,8 @@ static void handle_tlb_pending_event(struct intel_vgpu *vgpu, int ring_id) if (wait_for_atomic((I915_READ_FW(reg) == 0), 50)) gvt_err("timeout in invalidate ring (%d) tlb\n", ring_id); + else + vgpu_vreg(vgpu, regs[ring_id]) = 0; intel_uncore_forcewake_put(dev_priv, fw);