diff --git a/drivers/platform/x86/intel/Kconfig b/drivers/platform/x86/intel/Kconfig
index 8e65086bb6c8..a2ed17d67052 100644
--- a/drivers/platform/x86/intel/Kconfig
+++ b/drivers/platform/x86/intel/Kconfig
@@ -12,6 +12,7 @@ source "drivers/platform/x86/intel/pmt/Kconfig"
 source "drivers/platform/x86/intel/speed_select_if/Kconfig"
 source "drivers/platform/x86/intel/telemetry/Kconfig"
 source "drivers/platform/x86/intel/wmi/Kconfig"
+source "drivers/platform/x86/intel/tdx/Kconfig"
 
 config INTEL_HID_EVENT
 	tristate "Intel HID Event"
diff --git a/drivers/platform/x86/intel/Makefile b/drivers/platform/x86/intel/Makefile
index 35f2066578b2..27a6c6c5a83f 100644
--- a/drivers/platform/x86/intel/Makefile
+++ b/drivers/platform/x86/intel/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_INTEL_SKL_INT3472)		+= int3472/
 obj-$(CONFIG_INTEL_PMC_CORE)		+= pmc/
 obj-$(CONFIG_INTEL_PMT_CLASS)		+= pmt/
 obj-$(CONFIG_INTEL_SPEED_SELECT_INTERFACE) += speed_select_if/
+obj-$(CONFIG_INTEL_TDX_GUEST)		+= tdx/
 obj-$(CONFIG_INTEL_TELEMETRY)		+= telemetry/
 obj-$(CONFIG_INTEL_WMI)			+= wmi/
 
diff --git a/drivers/platform/x86/intel/tdx/Kconfig b/drivers/platform/x86/intel/tdx/Kconfig
new file mode 100644
index 000000000000..853e3a34c889
--- /dev/null
+++ b/drivers/platform/x86/intel/tdx/Kconfig
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# X86 TDX Platform Specific Drivers
+#
+
+config INTEL_TDX_ATTESTATION
+	tristate "Intel TDX attestation driver"
+	depends on INTEL_TDX_GUEST
+	help
+	  The TDX attestation driver provides IOCTL interfaces to the user to
+	  request TDREPORT from the TDX module or request quote from the VMM
+	  or to get quote buffer size. It is mainly used to get secure disk
+	  decryption keys from the key server.
diff --git a/drivers/platform/x86/intel/tdx/Makefile b/drivers/platform/x86/intel/tdx/Makefile
new file mode 100644
index 000000000000..124d6b7b20a0
--- /dev/null
+++ b/drivers/platform/x86/intel/tdx/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+obj-$(CONFIG_INTEL_TDX_ATTESTATION)	+= intel_tdx_attest.o
diff --git a/drivers/platform/x86/intel/tdx/intel_tdx_attest.c b/drivers/platform/x86/intel/tdx/intel_tdx_attest.c
new file mode 100644
index 000000000000..1db6c4f22692
--- /dev/null
+++ b/drivers/platform/x86/intel/tdx/intel_tdx_attest.c
@@ -0,0 +1,241 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * intel_tdx_attest.c - TDX guest attestation interface driver.
+ *
+ * Implements user interface to trigger attestation process and
+ * read the TD Quote result.
+ *
+ * Copyright (C) 2021-2022 Intel Corporation
+ *
+ * Author:
+ *     Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
+ */
+
+#define pr_fmt(fmt) "x86/tdx: attest: " fmt
+
+#include <linux/module.h>
+#include <linux/miscdevice.h>
+#include <linux/uaccess.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/set_memory.h>
+#include <linux/dma-mapping.h>
+#include <linux/jiffies.h>
+#include <linux/io.h>
+#include <asm/apic.h>
+#include <asm/tdx.h>
+#include <asm/irq_vectors.h>
+#include <uapi/misc/tdx.h>
+
+/* Used in Quote memory allocation */
+#define QUOTE_SIZE			(2 * PAGE_SIZE)
+/* Used in Get Quote request memory allocation */
+#define GET_QUOTE_MAX_SIZE		(4 * PAGE_SIZE)
+/* Get Quote timeout in msec */
+#define GET_QUOTE_TIMEOUT		(5000)
+
+/* Mutex to synchronize attestation requests */
+static DEFINE_MUTEX(attestation_lock);
+/* Completion object to track attestation status */
+static DECLARE_COMPLETION(attestation_done);
+/* Buffer used to copy report data in attestation handler */
+static u8 report_data[TDX_REPORT_DATA_LEN] __aligned(64);
+/* Data pointer used to get TD Quote data in attestation handler */
+static void *tdquote_data;
+/* Data pointer used to get TDREPORT data in attestation handler */
+static void *tdreport_data;
+/* DMA handle used to allocate and free tdquote DMA buffer */
+dma_addr_t tdquote_dma_handle;
+
+struct tdx_gen_quote {
+	void *buf __user;
+	size_t len;
+};
+
+static void attestation_callback_handler(void)
+{
+	complete(&attestation_done);
+}
+
+static long tdx_attest_ioctl(struct file *file, unsigned int cmd,
+			     unsigned long arg)
+{
+	void __user *argp = (void __user *)arg;
+	struct tdx_gen_quote tdquote_req;
+	long ret = 0;
+
+	mutex_lock(&attestation_lock);
+
+	switch (cmd) {
+	case TDX_CMD_GET_TDREPORT:
+		if (copy_from_user(report_data, argp, TDX_REPORT_DATA_LEN)) {
+			ret = -EFAULT;
+			break;
+		}
+
+		/* Generate TDREPORT_STRUCT */
+		if (tdx_mcall_tdreport(tdreport_data, report_data)) {
+			ret = -EIO;
+			break;
+		}
+
+		if (copy_to_user(argp, tdreport_data, TDX_TDREPORT_LEN))
+			ret = -EFAULT;
+		break;
+	case TDX_CMD_GEN_QUOTE:
+		reinit_completion(&attestation_done);
+
+		/* Copy TDREPORT data from user buffer */
+		if (copy_from_user(&tdquote_req, argp, sizeof(struct tdx_gen_quote))) {
+			ret = -EFAULT;
+			break;
+		}
+
+		if (tdquote_req.len <= 0 || tdquote_req.len > GET_QUOTE_MAX_SIZE) {
+			ret = -EINVAL;
+			break;
+		}
+
+		if (copy_from_user(tdquote_data, tdquote_req.buf, tdquote_req.len)) {
+			ret = -EFAULT;
+			break;
+		}
+
+		/* Submit GetQuote Request */
+		if (tdx_hcall_get_quote(tdquote_data)) {
+			ret = -EIO;
+			break;
+		}
+
+		/* Wait for attestation completion */
+		ret = wait_for_completion_interruptible_timeout(
+				&attestation_done,
+				msecs_to_jiffies(GET_QUOTE_TIMEOUT));
+		if (ret <= 0) {
+			ret = -EIO;
+			break;
+		}
+
+		/* ret will be positive if completed. */
+		ret = 0;
+
+		if (copy_to_user(tdquote_req.buf, tdquote_data, tdquote_req.len))
+			ret = -EFAULT;
+
+		break;
+	case TDX_CMD_GET_QUOTE_SIZE:
+		ret = put_user(QUOTE_SIZE, (u64 __user *)argp);
+		break;
+	default:
+		pr_err("cmd %d not supported\n", cmd);
+		break;
+	}
+
+	mutex_unlock(&attestation_lock);
+
+	return ret;
+}
+
+static const struct file_operations tdx_attest_fops = {
+	.owner		= THIS_MODULE,
+	.unlocked_ioctl	= tdx_attest_ioctl,
+	.llseek		= no_llseek,
+};
+
+static struct miscdevice tdx_attest_device = {
+	.minor          = MISC_DYNAMIC_MINOR,
+	.name           = "tdx-attest",
+	.fops           = &tdx_attest_fops,
+};
+
+static int __init tdx_attest_init(void)
+{
+	dma_addr_t handle;
+	long ret = 0;
+
+	mutex_lock(&attestation_lock);
+
+	ret = misc_register(&tdx_attest_device);
+	if (ret) {
+		pr_err("misc device registration failed\n");
+		mutex_unlock(&attestation_lock);
+		return ret;
+	}
+
+	/*
+	 * tdreport_data needs to be 64-byte aligned.
+	 * Full page alignment is more than enough.
+	 */
+	tdreport_data = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 0);
+	if (!tdreport_data) {
+		ret = -ENOMEM;
+		goto failed;
+	}
+
+	ret = dma_set_coherent_mask(tdx_attest_device.this_device,
+				    DMA_BIT_MASK(64));
+	if (ret) {
+		pr_err("dma set coherent mask failed\n");
+		goto failed;
+	}
+
+	/* Allocate DMA buffer to get TDQUOTE data from the VMM */
+	tdquote_data = dma_alloc_coherent(tdx_attest_device.this_device,
+					  GET_QUOTE_MAX_SIZE, &handle,
+					  GFP_KERNEL | __GFP_ZERO);
+	if (!tdquote_data) {
+		ret = -ENOMEM;
+		goto failed;
+	}
+
+	tdquote_dma_handle =  handle;
+
+	/*
+	 * Currently tdx_event_notify_handler is only used in attestation
+	 * driver. But, WRITE_ONCE is used as benign data race notice.
+	 */
+	WRITE_ONCE(tdx_event_notify_handler, attestation_callback_handler);
+
+	mutex_unlock(&attestation_lock);
+
+	pr_debug("module initialization success\n");
+
+	return 0;
+
+failed:
+	if (tdreport_data)
+		free_pages((unsigned long)tdreport_data, 0);
+
+	misc_deregister(&tdx_attest_device);
+
+	mutex_unlock(&attestation_lock);
+
+	pr_debug("module initialization failed\n");
+
+	return ret;
+}
+
+static void __exit tdx_attest_exit(void)
+{
+	mutex_lock(&attestation_lock);
+
+	dma_free_coherent(tdx_attest_device.this_device, GET_QUOTE_MAX_SIZE,
+			  tdquote_data, tdquote_dma_handle);
+	free_pages((unsigned long)tdreport_data, 0);
+	misc_deregister(&tdx_attest_device);
+	/*
+	 * Currently tdx_event_notify_handler is only used in attestation
+	 * driver. But, WRITE_ONCE is used as benign data race notice.
+	 */
+	WRITE_ONCE(tdx_event_notify_handler, NULL);
+	mutex_unlock(&attestation_lock);
+	pr_debug("module is successfully removed\n");
+}
+
+module_init(tdx_attest_init);
+module_exit(tdx_attest_exit);
+
+MODULE_AUTHOR("Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>");
+MODULE_DESCRIPTION("TDX attestation driver");
+MODULE_LICENSE("GPL");
diff --git a/include/uapi/misc/tdx.h b/include/uapi/misc/tdx.h
new file mode 100644
index 000000000000..da4b3866ea1b
--- /dev/null
+++ b/include/uapi/misc/tdx.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _UAPI_MISC_TDX_H
+#define _UAPI_MISC_TDX_H
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+/* Input report data length for TDX_CMD_GET_TDREPORT IOCTL request */
+#define TDX_REPORT_DATA_LEN		64
+
+/* Output TD report data length after TDX_CMD_GET_TDREPORT IOCTL execution */
+#define TDX_TDREPORT_LEN		1024
+
+/*
+ * TDX_CMD_GET_TDREPORT IOCTL is used to get TDREPORT data from the TDX
+ * Module. Users should pass report data of size TDX_REPORT_DATA_LEN bytes
+ * via user input buffer of size TDX_TDREPORT_LEN. Once IOCTL is successful
+ * TDREPORT data is copied to the user buffer.
+ */
+#define TDX_CMD_GET_TDREPORT		_IOWR('T', 0x01, __u64)
+
+/*
+ * TDX_CMD_GEN_QUOTE IOCTL is used to request TD QUOTE from the VMM. User
+ * should pass TD report data of size TDX_TDREPORT_LEN bytes via user input
+ * buffer of quote size. Once IOCTL is successful quote data is copied back to
+ * the user buffer.
+ */
+#define TDX_CMD_GEN_QUOTE		_IOR('T', 0x02, __u64)
+
+/*
+ * TDX_CMD_GET_QUOTE_SIZE IOCTL is used to get the TD Quote size info in bytes.
+ * This will be used for determining the input buffer allocation size when
+ * using TDX_CMD_GEN_QUOTE IOCTL.
+ */
+#define TDX_CMD_GET_QUOTE_SIZE		_IOR('T', 0x03, __u64)
+
+#endif /* _UAPI_MISC_TDX_H */
