From 4d60c5fd3f8751ea751d6dc6cfe0c1620420ccf8 Mon Sep 17 00:00:00 2001 From: Zhi Wang Date: Wed, 20 Jul 2016 01:14:38 -0400 Subject: drm/i915/gvt: vGPU PCI configuration space virtualization This patch introduces vGPU PCI configuration space virtualization. - Adjust the trapped GPFN(Guest Page Frame Number) window of virtual GEN PCI BAR 0 when guest initializes PCI BAR 0 address. - Emulate OpRegion when guest touches OpRegion. - Pass-through a part of aperture to guest when guest initializes aperture BAR. Signed-off-by: Zhi Wang Signed-off-by: Zhenyu Wang --- drivers/gpu/drm/i915/gvt/gvt.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/gpu/drm/i915/gvt/gvt.c') diff --git a/drivers/gpu/drm/i915/gvt/gvt.c b/drivers/gpu/drm/i915/gvt/gvt.c index 5063c672736d..c6e063ec6c5d 100644 --- a/drivers/gpu/drm/i915/gvt/gvt.c +++ b/drivers/gpu/drm/i915/gvt/gvt.c @@ -42,6 +42,11 @@ static const char * const supported_hypervisors[] = { [INTEL_GVT_HYPERVISOR_KVM] = "KVM", }; +struct intel_gvt_io_emulation_ops intel_gvt_io_emulation_ops = { + .emulate_cfg_read = intel_vgpu_emulate_cfg_read, + .emulate_cfg_write = intel_vgpu_emulate_cfg_write, +}; + /** * intel_gvt_init_host - Load MPT modules and detect if we're running in host * @gvt: intel gvt device @@ -122,6 +127,7 @@ void intel_gvt_clean_device(struct drm_i915_private *dev_priv) if (WARN_ON(!gvt->initialized)) return; + intel_gvt_clean_opregion(gvt); intel_gvt_clean_gtt(gvt); intel_gvt_clean_irq(gvt); intel_gvt_clean_mmio_info(gvt); @@ -179,10 +185,16 @@ int intel_gvt_init_device(struct drm_i915_private *dev_priv) if (ret) goto out_clean_irq; + ret = intel_gvt_init_opregion(gvt); + if (ret) + goto out_clean_gtt; + gvt_dbg_core("gvt device creation is done\n"); gvt->initialized = true; return 0; +out_clean_gtt: + intel_gvt_clean_gtt(gvt); out_clean_irq: intel_gvt_clean_irq(gvt); out_free_firmware: -- cgit