diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig
index 4c59793..082e77d 100644
--- a/drivers/gpu/drm/i915/Kconfig
+++ b/drivers/gpu/drm/i915/Kconfig
@@ -45,3 +45,18 @@ config DRM_I915_PRELIMINARY_HW_SUPPORT
 	  option changes the default for that module option.
 
 	  If in doubt, say "N".
+
+config DRM_I915_GVT
+        tristate "GVT-g host driver"
+        depends on DRM_I915
+        default n
+        help
+          Enabling GVT-g mediated graphics passthrough technique for Intel i915
+          based integrated graphics card. With GVT-g, it's possible to have one
+          integrated i915 device shared by multiple VMs. Performance critical
+          opterations such as apperture accesses and ring buffer operations
+          are pass-throughed to VM, with a minimal set of conflicting resources
+          (e.g. display settings) mediated by vGT driver. The benefit of vGT
+          is on both the performance, given that each VM could directly operate
+          its aperture space and submit commands like running on native, and
+          the feature completeness, given that a true GEN hardware is exposed.
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index 0851de07..c65026c 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -91,6 +91,8 @@ i915-y += dvo_ch7017.o \
 	  intel_sdvo.o \
 	  intel_tv.o
 
+obj-$(CONFIG_DRM_I915_GVT)  += i915_gvt.o gvt/
+
 # virtual gpu code
 i915-y += i915_vgpu.o
 
diff --git a/drivers/gpu/drm/i915/gvt/Makefile b/drivers/gpu/drm/i915/gvt/Makefile
new file mode 100644
index 0000000..959305f
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/Makefile
@@ -0,0 +1,5 @@
+GVT_SOURCE := gvt.o params.o
+
+ccflags-y                      += -I$(src) -I$(src)/.. -Wall -Werror -Wno-unused-function
+i915_gvt-y                     := $(GVT_SOURCE)
+obj-$(CONFIG_DRM_I915_GVT)     += i915_gvt.o
diff --git a/drivers/gpu/drm/i915/gvt/debug.h b/drivers/gpu/drm/i915/gvt/debug.h
new file mode 100644
index 0000000..0747f28
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/debug.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef __GVT_DEBUG_H__
+#define __GVT_DEBUG_H__
+
+#define gvt_info(fmt, args...) \
+	DRM_INFO("gvt: "fmt"\n", ##args)
+
+#define gvt_err(fmt, args...) \
+	DRM_ERROR("gvt: "fmt"\n", ##args)
+
+#define gvt_warn(condition, fmt, args...) \
+	WARN((condition), "gvt: "fmt"\n", ##args)
+
+#define gvt_warn_once(condition, fmt, args...) \
+	WARN_ONCE((condition), "gvt: "fmt"\n", ##args)
+
+#define gvt_dbg(level, fmt, args...) \
+	DRM_DEBUG_DRIVER("gvt: "fmt"\n", ##args)
+
+enum {
+	GVT_DBG_CORE = (1 << 0),
+	GVT_DBG_MM = (1 << 1),
+	GVT_DBG_IRQ = (1 << 2),
+};
+
+#define gvt_dbg_core(fmt, args...) \
+	gvt_dbg(GVT_DBG_CORE, fmt, ##args)
+
+#define gvt_dbg_mm(fmt, args...) \
+	gvt_dbg(GVT_DBG_MM, fmt, ##args)
+
+#define gvt_dbg_irq(fmt, args...) \
+	gvt_dbg(GVT_DBG_IRQ, fmt, ##args)
+
+#endif
diff --git a/drivers/gpu/drm/i915/gvt/gvt.c b/drivers/gpu/drm/i915/gvt/gvt.c
new file mode 100644
index 0000000..52cfa32
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/gvt.c
@@ -0,0 +1,393 @@
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/types.h>
+#include <xen/xen.h>
+#include <linux/kthread.h>
+
+#include "gvt.h"
+
+struct gvt_host gvt_host;
+
+static const char * const supported_hypervisors[] = {
+	[GVT_HYPERVISOR_TYPE_XEN] = "Xen Hypervisor",
+	[GVT_HYPERVISOR_TYPE_KVM] = "KVM",
+};
+
+static int gvt_init_host(void)
+{
+	struct gvt_host *host = &gvt_host;
+
+	if (!gvt.enable) {
+		gvt_dbg_core("GVT-g has been disabled by kernel parameter");
+		return -EINVAL;
+	}
+
+	if (host->initialized) {
+		gvt_err("GVT-g has already been initialized!");
+		return -EINVAL;
+	}
+
+	/* Xen DOM U */
+	if (xen_domain() && !xen_initial_domain())
+		return -ENODEV;
+
+	if (xen_initial_domain()) {
+		/* Xen Dom0 */
+		host->kdm = try_then_request_module(
+				symbol_get(xengt_kdm), "xengt");
+		host->hypervisor_type = GVT_HYPERVISOR_TYPE_XEN;
+	} else {
+		/* not in Xen. Try KVMGT */
+		host->kdm = try_then_request_module(
+				symbol_get(kvmgt_kdm), "kvm");
+		host->hypervisor_type = GVT_HYPERVISOR_TYPE_KVM;
+	}
+
+	if (!host->kdm)
+		return -EINVAL;
+
+	if (!hypervisor_detect_host())
+		return -ENODEV;
+
+	gvt_info("Running with hypervisor %s in host mode",
+			supported_hypervisors[host->hypervisor_type]);
+
+	idr_init(&host->device_idr);
+	mutex_init(&host->device_idr_lock);
+
+	host->initialized = true;
+	return 0;
+}
+
+static int init_device_info(struct pgt_device *pdev)
+{
+	struct gvt_device_info *info = &pdev->device_info;
+
+	if (!IS_BROADWELL(pdev->dev_priv)) {
+		DRM_DEBUG_DRIVER("Unsupported GEN device");
+		return -ENODEV;
+	}
+
+	if (IS_BROADWELL(pdev->dev_priv)) {
+		info->max_gtt_gm_sz = (1ULL << 32); /* 4GB */
+		/*
+		 * The layout of BAR0 in BDW:
+		 * |< - MMIO 2MB ->|<- Reserved 6MB ->|<- MAX GTT 8MB->|
+		 *
+		 * GTT offset in BAR0 starts from 8MB to 16MB, and
+		 * Whatever GTT size is configured in BIOS,
+		 * the size of BAR0 is always 16MB. The actual configured
+		 * GTT size can be found in GMCH_CTRL.
+		 */
+		info->gtt_start_offset = (1UL << 23); /* 8MB */
+		info->max_gtt_size = (1UL << 23); /* 8MB */
+		info->gtt_entry_size = 8;
+		info->gtt_entry_size_shift = 3;
+		info->gmadr_bytes_in_cmd = 8;
+		info->mmio_size = 2 * 1024 * 1024; /* 2MB */
+	}
+
+	return 0;
+}
+
+static void init_initial_cfg_space_state(struct pgt_device *pdev)
+{
+	struct pci_dev *pci_dev = pdev->dev_priv->dev->pdev;
+	int i;
+
+	gvt_dbg_core("init initial cfg space, id %d", pdev->id);
+
+	for (i = 0; i < GVT_CFG_SPACE_SZ; i += 4)
+		pci_read_config_dword(pci_dev, i,
+				(u32 *)&pdev->initial_cfg_space[i]);
+
+	for (i = 0; i < GVT_BAR_NUM; i++) {
+		pdev->bar_size[i] = pci_resource_len(pci_dev, i * 2);
+		gvt_dbg_core("bar %d size: %llx", i, pdev->bar_size[i]);
+	}
+}
+
+static void clean_initial_mmio_state(struct pgt_device *pdev)
+{
+	if (pdev->gttmmio_va) {
+		iounmap(pdev->gttmmio_va);
+		pdev->gttmmio_va = NULL;
+	}
+
+	if (pdev->gmadr_va) {
+		iounmap(pdev->gmadr_va);
+		pdev->gmadr_va = NULL;
+	}
+}
+
+static int init_initial_mmio_state(struct pgt_device *pdev)
+{
+	struct gvt_device_info *info = &pdev->device_info;
+
+	u64 bar0, bar1;
+	int rc;
+
+	gvt_dbg_core("init initial mmio state, id %d", pdev->id);
+
+	bar0 = *(u64 *)&pdev->initial_cfg_space[GVT_REG_CFG_SPACE_BAR0];
+	bar1 = *(u64 *)&pdev->initial_cfg_space[GVT_REG_CFG_SPACE_BAR1];
+
+	pdev->gttmmio_base = bar0 & ~0xf;
+	pdev->reg_num = info->mmio_size / 4;
+	pdev->gmadr_base = bar1 & ~0xf;
+
+	pdev->gttmmio_va = ioremap(pdev->gttmmio_base, pdev->bar_size[0]);
+	if (!pdev->gttmmio_va) {
+		gvt_err("fail to map GTTMMIO BAR.");
+		return -EFAULT;
+	}
+
+	pdev->gmadr_va = ioremap(pdev->gmadr_base, pdev->bar_size[2]);
+	if (!pdev->gmadr_va) {
+		gvt_err("fail to map GMADR BAR.");
+		rc = -EFAULT;
+		goto err;
+	}
+
+	gvt_dbg_core("bar0: 0x%llx, bar1: 0x%llx", bar0, bar1);
+	gvt_dbg_core("mmio size: %x", pdev->mmio_size);
+	gvt_dbg_core("gttmmio: 0x%llx, gmadr: 0x%llx", pdev->gttmmio_base,
+			pdev->gmadr_base);
+	gvt_dbg_core("gttmmio_va: %p", pdev->gttmmio_va);
+	gvt_dbg_core("gmadr_va: %p", pdev->gmadr_va);
+
+	return 0;
+err:
+	clean_initial_mmio_state(pdev);
+	return rc;
+}
+
+static int gvt_service_thread(void *data)
+{
+	struct pgt_device *pdev = (struct pgt_device *)data;
+	int r;
+
+	gvt_dbg_core("service thread start, pgt %d", pdev->id);
+
+	while (!kthread_should_stop()) {
+		r = wait_event_interruptible(pdev->service_thread_wq,
+				kthread_should_stop() || pdev->service_request);
+
+		if (kthread_should_stop())
+			break;
+
+		if (gvt_warn_once(r,
+			"service thread is waken up by unexpected signal."))
+			continue;
+	}
+
+	return 0;
+}
+
+static void clean_service_thread(struct pgt_device *pdev)
+{
+	if (pdev->service_thread) {
+		kthread_stop(pdev->service_thread);
+		pdev->service_thread = NULL;
+	}
+}
+
+static int init_service_thread(struct pgt_device *pdev)
+{
+	init_waitqueue_head(&pdev->service_thread_wq);
+
+	pdev->service_thread = kthread_run(gvt_service_thread,
+			pdev, "gvt_service_thread%d", pdev->id);
+
+	if (!pdev->service_thread) {
+		gvt_err("fail to start service thread.");
+		return -ENOSPC;
+	}
+
+	return 0;
+}
+
+static void clean_pgt_device(struct pgt_device *pdev)
+{
+	clean_service_thread(pdev);
+	clean_initial_mmio_state(pdev);
+}
+
+static int init_pgt_device(struct pgt_device *pdev,
+	struct drm_i915_private *dev_priv)
+{
+	int rc;
+
+	rc = init_device_info(pdev);
+	if (rc)
+		return rc;
+
+	init_initial_cfg_space_state(pdev);
+
+	rc = init_initial_mmio_state(pdev);
+	if (rc)
+		goto err;
+
+	rc = init_service_thread(pdev);
+	if (rc)
+		goto err;
+
+	return 0;
+err:
+	clean_pgt_device(pdev);
+	return rc;
+}
+
+static int post_init_pgt_device(struct pgt_device *pdev)
+{
+	return 0;
+}
+
+static void free_pgt_device(struct pgt_device *pdev)
+{
+	struct gvt_host *host = &gvt_host;
+
+	mutex_lock(&host->device_idr_lock);
+	idr_remove(&host->device_idr, pdev->id);
+	mutex_unlock(&host->device_idr_lock);
+
+	vfree(pdev);
+}
+
+static struct pgt_device *alloc_pgt_device(struct drm_i915_private *dev_priv)
+{
+	struct gvt_host *host = &gvt_host;
+	struct pgt_device *pdev = NULL;
+
+	pdev = vzalloc(sizeof(*pdev));
+	if (!pdev)
+		return NULL;
+
+	mutex_lock(&host->device_idr_lock);
+	pdev->id = idr_alloc(&host->device_idr, pdev, 0, 0, GFP_KERNEL);
+	mutex_unlock(&host->device_idr_lock);
+
+	if (pdev->id < 0) {
+		gvt_err("fail to allocate pgt device id.");
+		goto err;
+	}
+
+	mutex_init(&pdev->lock);
+	pdev->dev_priv = dev_priv;
+	idr_init(&pdev->instance_idr);
+
+	return pdev;
+err:
+	free_pgt_device(pdev);
+	return NULL;
+}
+
+void gvt_destroy_pgt_device(void *private_data)
+{
+	struct pgt_device *pdev = (struct pgt_device *)private_data;
+
+	clean_pgt_device(pdev);
+	free_pgt_device(pdev);
+}
+
+/**
+ * gvt_create_pgt_device - create a GVT physical device
+ * @dev: drm device
+ *
+ * This function is called at the initialization stage, to create a physical
+ * GVT device and initialize necessary GVT components for it.
+ *
+ * Returns:
+ * pointer to the pgt_device structure, NULL if failed.
+ */
+void *gvt_create_pgt_device(struct drm_i915_private *dev_priv)
+{
+	struct pgt_device *pdev = NULL;
+	struct gvt_host *host = &gvt_host;
+	int rc;
+
+	if (!host->initialized && !gvt_init_host()) {
+		gvt_err("gvt_init_host fail");
+		return NULL;
+	}
+
+	gvt_dbg_core("create new pgt device, i915 dev_priv: %p", dev_priv);
+
+	pdev = alloc_pgt_device(dev_priv);
+	if (!pdev) {
+		gvt_err("fail to allocate memory for pgt device.");
+		goto err;
+	}
+
+	gvt_dbg_core("init pgt device, id %d", pdev->id);
+
+	rc = init_pgt_device(pdev, dev_priv);
+	if (rc) {
+		gvt_err("fail to init physical device state.");
+		goto err;
+	}
+
+	gvt_dbg_core("pgt device creation done, id %d", pdev->id);
+
+	return pdev;
+err:
+	if (pdev) {
+		gvt_destroy_pgt_device(pdev);
+		pdev = NULL;
+	}
+	return NULL;
+}
+
+/**
+ * gvt_post_init_pgt_device - post init a GVT physical device
+ * @dev: drm device
+ *
+ * This function is called at the end of the initialization stage, to
+ * post-initialize a physical GVT device and initialize necessary
+ * GVT components rely on i915 components.
+ *
+ * Returns:
+ * zero on success, non-zero if failed.
+ */
+int gvt_post_init_pgt_device(void *private_data)
+{
+	struct pgt_device *pdev = (struct pgt_device *)private_data;
+	struct gvt_host *host = &gvt_host;
+	int rc;
+
+	if (!host->initialized) {
+		gvt_err("gvt_host haven't been initialized.");
+		return -ENODEV;
+	}
+
+	gvt_dbg_core("post init pgt device %d", pdev->id);
+
+	rc = post_init_pgt_device(pdev);
+	if (rc) {
+		gvt_err("fail to post init physical device state.");
+		return rc;
+	}
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
new file mode 100644
index 0000000..d450198
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _GVT_H_
+#define _GVT_H_
+
+#include "i915_drv.h"
+#include "i915_vgpu.h"
+
+#include "debug.h"
+#include "params.h"
+#include "reg.h"
+#include "hypercall.h"
+#include "mpt.h"
+
+#define GVT_MAX_VGPU 8
+
+enum {
+	GVT_HYPERVISOR_TYPE_XEN = 0,
+	GVT_HYPERVISOR_TYPE_KVM,
+};
+
+struct gvt_host {
+	bool initialized;
+	int hypervisor_type;
+	struct mutex device_idr_lock;
+	struct idr device_idr;
+	struct gvt_kernel_dm *kdm;
+};
+
+extern struct gvt_host gvt_host;
+extern struct gvt_kernel_dm xengt_kdm;
+extern struct gvt_kernel_dm kvmgt_kdm;
+
+/* Describe the limitation of HW.*/
+struct gvt_device_info {
+	u64 max_gtt_gm_sz;
+	u32 gtt_start_offset;
+	u32 gtt_end_offset;
+	u32 max_gtt_size;
+	u32 gtt_entry_size;
+	u32 gtt_entry_size_shift;
+	u32 gmadr_bytes_in_cmd;
+	u32 mmio_size;
+};
+
+struct vgt_device {
+	int id;
+	int vm_id;
+	struct pgt_device *pdev;
+	bool warn_untrack;
+};
+
+struct pgt_device {
+	struct mutex lock;
+	int id;
+
+	struct drm_i915_private *dev_priv;
+	struct idr instance_idr;
+
+	struct gvt_device_info device_info;
+
+	u8 initial_cfg_space[GVT_CFG_SPACE_SZ];
+	u64 bar_size[GVT_BAR_NUM];
+
+	u64 gttmmio_base;
+	void *gttmmio_va;
+
+	u64 gmadr_base;
+	void *gmadr_va;
+
+	u32 mmio_size;
+	u32 reg_num;
+
+	wait_queue_head_t service_thread_wq;
+	struct task_struct *service_thread;
+	unsigned long service_request;
+};
+
+#endif
diff --git a/drivers/gpu/drm/i915/gvt/hypercall.h b/drivers/gpu/drm/i915/gvt/hypercall.h
new file mode 100644
index 0000000..0a41874
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/hypercall.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _GVT_HYPERCALL_H_
+#define _GVT_HYPERCALL_H_
+
+struct gvt_kernel_dm {
+};
+
+#endif /* _GVT_HYPERCALL_H_ */
diff --git a/drivers/gpu/drm/i915/gvt/mpt.h b/drivers/gpu/drm/i915/gvt/mpt.h
new file mode 100644
index 0000000..e594bb8
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/mpt.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _GVT_MPT_H_
+#define _GVT_MPT_H_
+
+struct vgt_device;
+
+static inline bool hypervisor_detect_host(void)
+{
+	return false;
+}
+
+#endif /* _GVT_MPT_H_ */
diff --git a/drivers/gpu/drm/i915/gvt/params.c b/drivers/gpu/drm/i915/gvt/params.c
new file mode 100644
index 0000000..d381d17
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/params.c
@@ -0,0 +1,32 @@
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "gvt.h"
+
+struct gvt_kernel_params gvt = {
+	.enable = false,
+	.debug = 0,
+};
+
+module_param_named(gvt_enable, gvt.enable, bool, 0600);
+MODULE_PARM_DESC(gvt_enable, "Enable Intel GVT-g host support");
diff --git a/drivers/gpu/drm/i915/gvt/params.h b/drivers/gpu/drm/i915/gvt/params.h
new file mode 100644
index 0000000..d2955b9
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/params.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _GVT_PARAMS_H_
+#define _GVT_PARAMS_H_
+
+struct gvt_kernel_params {
+	bool enable;
+	int debug;
+};
+
+extern struct gvt_kernel_params gvt;
+
+#endif
diff --git a/drivers/gpu/drm/i915/gvt/reg.h b/drivers/gpu/drm/i915/gvt/reg.h
new file mode 100644
index 0000000..d363b74
--- /dev/null
+++ b/drivers/gpu/drm/i915/gvt/reg.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _GVT_REG_H
+#define _GVT_REG_H
+
+#define GVT_CFG_SPACE_SZ	256
+#define GVT_BAR_NUM		4
+
+#define GVT_REG_CFG_SPACE_BAR0	0x10
+#define GVT_REG_CFG_SPACE_BAR1	0x18
+#define GVT_REG_CFG_SPACE_BAR2	0x20
+
+#endif
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 1c6d227..f3bed37 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -35,6 +35,7 @@
 #include "intel_drv.h"
 #include <drm/i915_drm.h>
 #include "i915_drv.h"
+#include "i915_gvt.h"
 #include "i915_vgpu.h"
 #include "i915_trace.h"
 #include <linux/pci.h>
@@ -1045,6 +1046,10 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 
 	intel_uncore_init(dev);
 
+	ret = intel_gvt_init(dev);
+	if (ret)
+		goto out_uncore_fini;
+
 	ret = i915_gem_gtt_init(dev);
 	if (ret)
 		goto out_uncore_fini;
@@ -1135,6 +1140,12 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 		goto out_power_well;
 	}
 
+	ret = intel_gvt_post_init(dev);
+	if (ret) {
+		DRM_ERROR("failed to post init pgt device\n");
+		goto out_power_well;
+	}
+
 	/*
 	 * Notify a valid surface after modesetting,
 	 * when running inside a VM.
@@ -1177,6 +1188,7 @@ out_gem_unload:
 out_gtt:
 	i915_global_gtt_cleanup(dev);
 out_uncore_fini:
+	intel_gvt_cleanup(dev);
 	intel_uncore_fini(dev);
 	i915_mmio_cleanup(dev);
 put_bridge:
@@ -1223,6 +1235,8 @@ int i915_driver_unload(struct drm_device *dev)
 
 	intel_modeset_cleanup(dev);
 
+	intel_gvt_cleanup(dev);
+
 	/*
 	 * free the memory space allocated for the child device
 	 * config parsed from VBT
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 20d9dbd..2f897c3 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1705,6 +1705,10 @@ struct i915_workarounds {
 	u32 hw_whitelist_count[I915_NUM_RINGS];
 };
 
+struct i915_gvt {
+	void *pgt_device;
+};
+
 struct i915_virtual_gpu {
 	bool active;
 };
@@ -1744,6 +1748,8 @@ struct drm_i915_private {
 
 	struct i915_virtual_gpu vgpu;
 
+	struct i915_gvt gvt;
+
 	struct intel_guc guc;
 
 	struct intel_csr csr;
@@ -2780,6 +2786,12 @@ void intel_uncore_forcewake_get__locked(struct drm_i915_private *dev_priv,
 void intel_uncore_forcewake_put__locked(struct drm_i915_private *dev_priv,
 					enum forcewake_domains domains);
 void assert_forcewakes_inactive(struct drm_i915_private *dev_priv);
+
+static inline bool intel_gvt_active(struct drm_device *dev)
+{
+	return to_i915(dev)->gvt.pgt_device ? true : false;
+}
+
 static inline bool intel_vgpu_active(struct drm_device *dev)
 {
 	return to_i915(dev)->vgpu.active;
diff --git a/drivers/gpu/drm/i915/i915_gvt.c b/drivers/gpu/drm/i915/i915_gvt.c
new file mode 100644
index 0000000..3ca7232
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_gvt.c
@@ -0,0 +1,93 @@
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "i915_drv.h"
+#include "i915_gvt.h"
+
+/**
+ * DOC: Intel GVT-g host support
+ *
+ * Intel GVT-g is a graphics virtualization technology which shares the
+ * GPU among multiple virtual machines on a time-sharing basis. Each
+ * virtual machine is presented a virtual GPU (vGPU), which has equivalent
+ * features as the underlying physical GPU (pGPU), so i915 driver can run
+ * seamlessly in a virtual machine. This file provides the englightments
+ * of GVT and the necessary components used by GVT in i915 driver.
+ */
+
+/**
+ * intel_gvt_init - initialize GVT components at the beginning of i915
+ * driver loading.
+ * @dev: drm device *
+ *
+ * This function is called at the beginning of the initialization stage,
+ * to initialize the GVT components that have to be initialized
+ * before HW gets touched by other i915 components.
+ */
+int intel_gvt_init(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+
+	dev_priv->gvt.pgt_device = gvt_create_pgt_device(dev_priv);
+	if (intel_gvt_active(dev))
+		DRM_DEBUG_DRIVER("GVT-g is running in host mode\n");
+
+	return 0;
+}
+
+/**
+ * intel_gvt_post_init - initialize GVT components at the end of i915
+ * driver loading.
+ * @dev: drm device *
+ *
+ * This function is called at the end of the initialization stage,
+ * to initialize the GVT components that have to be initialized after
+ * other i915 components are ready.
+ */
+int intel_gvt_post_init(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+
+	if (!intel_gvt_active(dev))
+		return 0;
+
+	return gvt_post_init_pgt_device(dev_priv->gvt.pgt_device);
+}
+
+/**
+ * intel_gvt_cleanup - cleanup GVT components when i915 driver is unloading
+ * @dev: drm device *
+ *
+ * This function is called at the i915 driver unloading stage, to shutdown
+ * GVT components and release the related resources.
+ */
+void intel_gvt_cleanup(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
+
+	if (!intel_gvt_active(dev))
+		return;
+
+	gvt_destroy_pgt_device(dev_priv->gvt.pgt_device);
+	dev_priv->gvt.pgt_device = NULL;
+}
diff --git a/drivers/gpu/drm/i915/i915_gvt.h b/drivers/gpu/drm/i915/i915_gvt.h
new file mode 100644
index 0000000..30cc207
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_gvt.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright(c) 2011-2016 Intel Corporation. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _I915_GVT_H_
+#define _I915_GVT_H_
+
+#ifdef CONFIG_DRM_I915_GVT
+extern void *gvt_create_pgt_device(struct drm_i915_private *dev_priv);
+extern int gvt_post_init_pgt_device(void *data);
+extern void gvt_destroy_pgt_device(void *data);
+
+extern int intel_gvt_init(struct drm_device *dev);
+extern int intel_gvt_post_init(struct drm_device *dev);
+extern void intel_gvt_cleanup(struct drm_device *dev);
+#else
+extern int intel_gvt_init(struct drm_device *dev)
+{
+	return 0;
+}
+extern int intel_gvt_post_init(struct drm_device *dev)
+{
+	return 0;
+}
+extern void intel_gvt_cleanup(struct drm_device *dev)
+{
+}
+#endif
+
+#endif /* _I915_GVT_H_ */
