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11 * The above copyright notice and this permission notice (including the next
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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25 #include "intel_gvt.h"
28 * DOC: Intel GVT-g host support
30 * Intel GVT-g is a graphics virtualization technology which shares the
31 * GPU among multiple virtual machines on a time-sharing basis. Each
32 * virtual machine is presented a virtual GPU (vGPU), which has equivalent
33 * features as the underlying physical GPU (pGPU), so i915 driver can run
34 * seamlessly in a virtual machine. This file provides the englightments
35 * of GVT and the necessary components used by GVT in i915 driver.
38 static bool is_supported_device(struct drm_i915_private *dev_priv)
40 if (IS_BROADWELL(dev_priv))
46 * intel_gvt_init - initialize GVT components
47 * @dev_priv: drm i915 private data
49 * This function is called at the initialization stage to create a GVT device.
52 * Zero on success, negative error code if failed.
55 int intel_gvt_init(struct drm_i915_private *dev_priv)
59 if (!i915.enable_gvt) {
60 DRM_DEBUG_DRIVER("GVT-g is disabled by kernel params\n");
64 if (!is_supported_device(dev_priv)) {
65 DRM_DEBUG_DRIVER("Unsupported device. GVT-g is disabled\n");
70 * We're not in host or fail to find a MPT module, disable GVT-g
72 ret = intel_gvt_init_host();
74 DRM_DEBUG_DRIVER("Not in host or MPT modules not found\n");
78 ret = intel_gvt_init_device(dev_priv);
80 DRM_DEBUG_DRIVER("Fail to init GVT device\n");
92 * intel_gvt_cleanup - cleanup GVT components when i915 driver is unloading
93 * @dev_priv: drm i915 private *
95 * This function is called at the i915 driver unloading stage, to shutdown
96 * GVT components and release the related resources.
98 void intel_gvt_cleanup(struct drm_i915_private *dev_priv)
100 if (!intel_gvt_active(dev_priv))
103 intel_gvt_clean_device(dev_priv);