diff --git a/drivers/acpi/nfit/Kconfig b/drivers/acpi/nfit/Kconfig
index f7c57e33499e..52eefd732cf2 100644
--- a/drivers/acpi/nfit/Kconfig
+++ b/drivers/acpi/nfit/Kconfig
@@ -13,3 +13,14 @@ config ACPI_NFIT
 
 	  To compile this driver as a module, choose M here:
 	  the module will be called nfit.
+
+config NFIT_SECURITY_DEBUG
+	bool "Enable debug for NVDIMM security commands"
+	depends on ACPI_NFIT
+	help
+	  Some NVDIMM devices and controllers support encryption and
+	  other security features. The payloads for the commands that
+	  enable those features may contain sensitive clear-text
+	  security material. Disable debug of those command payloads
+	  by default. If you are a kernel developer actively working
+	  on NVDIMM security enabling say Y, otherwise say N.
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 14d9f5bea015..58fb4ce42548 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -24,6 +24,7 @@
 #include <linux/nd.h>
 #include <asm/cacheflush.h>
 #include <acpi/nfit.h>
+#include "intel.h"
 #include "nfit.h"
 #include "intel.h"
 
@@ -380,6 +381,14 @@ static u8 nfit_dsm_revid(unsigned family, unsigned func)
 			[NVDIMM_INTEL_QUERY_FWUPDATE] = 2,
 			[NVDIMM_INTEL_SET_THRESHOLD] = 2,
 			[NVDIMM_INTEL_INJECT_ERROR] = 2,
+			[NVDIMM_INTEL_GET_SECURITY_STATE] = 2,
+			[NVDIMM_INTEL_SET_PASSPHRASE] = 2,
+			[NVDIMM_INTEL_DISABLE_PASSPHRASE] = 2,
+			[NVDIMM_INTEL_UNLOCK_UNIT] = 2,
+			[NVDIMM_INTEL_FREEZE_LOCK] = 2,
+			[NVDIMM_INTEL_SECURE_ERASE] = 2,
+			[NVDIMM_INTEL_OVERWRITE] = 2,
+			[NVDIMM_INTEL_QUERY_OVERWRITE] = 2,
 		},
 	};
 	u8 id;
@@ -394,6 +403,17 @@ static u8 nfit_dsm_revid(unsigned family, unsigned func)
 	return id;
 }
 
+static bool payload_dumpable(struct nvdimm *nvdimm, unsigned int func)
+{
+	struct nfit_mem *nfit_mem = nvdimm_provider_data(nvdimm);
+
+	if (nfit_mem && nfit_mem->family == NVDIMM_FAMILY_INTEL
+			&& func >= NVDIMM_INTEL_GET_SECURITY_STATE
+			&& func <= NVDIMM_INTEL_MASTER_SECURE_ERASE)
+		return IS_ENABLED(CONFIG_NFIT_SECURITY_DEBUG);
+	return true;
+}
+
 int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
 		unsigned int cmd, void *buf, unsigned int buf_len, int *cmd_rc)
 {
@@ -478,9 +498,10 @@ int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
 
 	dev_dbg(dev, "%s cmd: %d: func: %d input length: %d\n",
 		dimm_name, cmd, func, in_buf.buffer.length);
-	print_hex_dump_debug("nvdimm in  ", DUMP_PREFIX_OFFSET, 4, 4,
-			in_buf.buffer.pointer,
-			min_t(u32, 256, in_buf.buffer.length), true);
+	if (payload_dumpable(nvdimm, func))
+		print_hex_dump_debug("nvdimm in  ", DUMP_PREFIX_OFFSET, 4, 4,
+				in_buf.buffer.pointer,
+				min_t(u32, 256, in_buf.buffer.length), true);
 
 	/* call the BIOS, prefer the named methods over _DSM if available */
 	if (nvdimm && cmd == ND_CMD_GET_CONFIG_SIZE
@@ -3337,7 +3358,7 @@ static int acpi_nfit_flush_probe(struct nvdimm_bus_descriptor *nd_desc)
 	return 0;
 }
 
-static int acpi_nfit_clear_to_send(struct nvdimm_bus_descriptor *nd_desc,
+static int __acpi_nfit_clear_to_send(struct nvdimm_bus_descriptor *nd_desc,
 		struct nvdimm *nvdimm, unsigned int cmd)
 {
 	struct acpi_nfit_desc *acpi_desc = to_acpi_nfit_desc(nd_desc);
@@ -3359,6 +3380,23 @@ static int acpi_nfit_clear_to_send(struct nvdimm_bus_descriptor *nd_desc,
 	return 0;
 }
 
+/* prevent security commands from being issued via ioctl */
+static int acpi_nfit_clear_to_send(struct nvdimm_bus_descriptor *nd_desc,
+		struct nvdimm *nvdimm, unsigned int cmd, void *buf)
+{
+	struct nd_cmd_pkg *call_pkg = buf;
+	unsigned int func;
+
+	if (nvdimm && cmd == ND_CMD_CALL &&
+			call_pkg->nd_family == NVDIMM_FAMILY_INTEL) {
+		func = call_pkg->nd_command;
+		if ((1 << func) & NVDIMM_INTEL_SECURITY_CMDMASK)
+			return -EOPNOTSUPP;
+	}
+
+	return __acpi_nfit_clear_to_send(nd_desc, nvdimm, cmd);
+}
+
 int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc,
 		enum nfit_ars_state req_type)
 {
diff --git a/drivers/acpi/nfit/intel.h b/drivers/acpi/nfit/intel.h
index 86746312381f..1802bd398c23 100644
--- a/drivers/acpi/nfit/intel.h
+++ b/drivers/acpi/nfit/intel.h
@@ -35,4 +35,78 @@ struct nd_intel_smart {
 	};
 } __packed;
 
+#define ND_INTEL_STATUS_SIZE		4
+#define ND_INTEL_PASSPHRASE_SIZE	32
+
+#define ND_INTEL_STATUS_NOT_SUPPORTED	1
+#define ND_INTEL_STATUS_RETRY		5
+#define ND_INTEL_STATUS_NOT_READY	9
+#define ND_INTEL_STATUS_INVALID_STATE	10
+#define ND_INTEL_STATUS_INVALID_PASS	11
+#define ND_INTEL_STATUS_OVERWRITE_UNSUPPORTED	0x10007
+#define ND_INTEL_STATUS_OQUERY_INPROGRESS	0x10007
+#define ND_INTEL_STATUS_OQUERY_SEQUENCE_ERR	0x20007
+
+#define ND_INTEL_SEC_STATE_ENABLED	0x02
+#define ND_INTEL_SEC_STATE_LOCKED	0x04
+#define ND_INTEL_SEC_STATE_FROZEN	0x08
+#define ND_INTEL_SEC_STATE_PLIMIT	0x10
+#define ND_INTEL_SEC_STATE_UNSUPPORTED	0x20
+#define ND_INTEL_SEC_STATE_OVERWRITE	0x40
+
+#define ND_INTEL_SEC_ESTATE_ENABLED	0x01
+#define ND_INTEL_SEC_ESTATE_PLIMIT	0x02
+
+struct nd_intel_get_security_state {
+	u32 status;
+	u8 extended_state;
+	u8 reserved[3];
+	u8 state;
+	u8 reserved1[3];
+} __packed;
+
+struct nd_intel_set_passphrase {
+	u8 old_pass[ND_INTEL_PASSPHRASE_SIZE];
+	u8 new_pass[ND_INTEL_PASSPHRASE_SIZE];
+	u32 status;
+} __packed;
+
+struct nd_intel_unlock_unit {
+	u8 passphrase[ND_INTEL_PASSPHRASE_SIZE];
+	u32 status;
+} __packed;
+
+struct nd_intel_disable_passphrase {
+	u8 passphrase[ND_INTEL_PASSPHRASE_SIZE];
+	u32 status;
+} __packed;
+
+struct nd_intel_freeze_lock {
+	u32 status;
+} __packed;
+
+struct nd_intel_secure_erase {
+	u8 passphrase[ND_INTEL_PASSPHRASE_SIZE];
+	u32 status;
+} __packed;
+
+struct nd_intel_overwrite {
+	u8 passphrase[ND_INTEL_PASSPHRASE_SIZE];
+	u32 status;
+} __packed;
+
+struct nd_intel_query_overwrite {
+	u32 status;
+} __packed;
+
+struct nd_intel_set_master_passphrase {
+	u8 old_pass[ND_INTEL_PASSPHRASE_SIZE];
+	u8 new_pass[ND_INTEL_PASSPHRASE_SIZE];
+	u32 status;
+} __packed;
+
+struct nd_intel_master_secure_erase {
+	u8 passphrase[ND_INTEL_PASSPHRASE_SIZE];
+	u32 status;
+} __packed;
 #endif
diff --git a/drivers/acpi/nfit/nfit.h b/drivers/acpi/nfit/nfit.h
index df0f6b8407e7..ecde13a9199d 100644
--- a/drivers/acpi/nfit/nfit.h
+++ b/drivers/acpi/nfit/nfit.h
@@ -60,14 +60,33 @@ enum nvdimm_family_cmds {
 	NVDIMM_INTEL_QUERY_FWUPDATE = 16,
 	NVDIMM_INTEL_SET_THRESHOLD = 17,
 	NVDIMM_INTEL_INJECT_ERROR = 18,
+	NVDIMM_INTEL_GET_SECURITY_STATE = 19,
+	NVDIMM_INTEL_SET_PASSPHRASE = 20,
+	NVDIMM_INTEL_DISABLE_PASSPHRASE = 21,
+	NVDIMM_INTEL_UNLOCK_UNIT = 22,
+	NVDIMM_INTEL_FREEZE_LOCK = 23,
+	NVDIMM_INTEL_SECURE_ERASE = 24,
+	NVDIMM_INTEL_OVERWRITE = 25,
+	NVDIMM_INTEL_QUERY_OVERWRITE = 26,
+	NVDIMM_INTEL_SET_MASTER_PASSPHRASE = 27,
+	NVDIMM_INTEL_MASTER_SECURE_ERASE = 28,
 };
 
+#define NVDIMM_INTEL_SECURITY_CMDMASK \
+(1 << NVDIMM_INTEL_GET_SECURITY_STATE | 1 << NVDIMM_INTEL_SET_PASSPHRASE \
+| 1 << NVDIMM_INTEL_DISABLE_PASSPHRASE | 1 << NVDIMM_INTEL_UNLOCK_UNIT \
+| 1 << NVDIMM_INTEL_FREEZE_LOCK | 1 << NVDIMM_INTEL_SECURE_ERASE \
+| 1 << NVDIMM_INTEL_OVERWRITE | 1 << NVDIMM_INTEL_QUERY_OVERWRITE \
+| 1 << NVDIMM_INTEL_SET_MASTER_PASSPHRASE \
+| 1 << NVDIMM_INTEL_MASTER_SECURE_ERASE)
+
 #define NVDIMM_INTEL_CMDMASK \
 (NVDIMM_STANDARD_CMDMASK | 1 << NVDIMM_INTEL_GET_MODES \
  | 1 << NVDIMM_INTEL_GET_FWINFO | 1 << NVDIMM_INTEL_START_FWUPDATE \
  | 1 << NVDIMM_INTEL_SEND_FWUPDATE | 1 << NVDIMM_INTEL_FINISH_FWUPDATE \
  | 1 << NVDIMM_INTEL_QUERY_FWUPDATE | 1 << NVDIMM_INTEL_SET_THRESHOLD \
- | 1 << NVDIMM_INTEL_INJECT_ERROR | 1 << NVDIMM_INTEL_LATCH_SHUTDOWN)
+ | 1 << NVDIMM_INTEL_INJECT_ERROR | 1 << NVDIMM_INTEL_LATCH_SHUTDOWN \
+ | NVDIMM_INTEL_SECURITY_CMDMASK)
 
 enum nfit_uuids {
 	/* for simplicity alias the uuid index with the family id */
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index f1fb39921236..9743d8083538 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -902,7 +902,7 @@ static int nd_cmd_clear_to_send(struct nvdimm_bus *nvdimm_bus,
 
 	/* ask the bus provider if it would like to block this request */
 	if (nd_desc->clear_to_send) {
-		int rc = nd_desc->clear_to_send(nd_desc, nvdimm, cmd);
+		int rc = nd_desc->clear_to_send(nd_desc, nvdimm, cmd, data);
 
 		if (rc)
 			return rc;
diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h
index 097072c5a852..472171af7f60 100644
--- a/include/linux/libnvdimm.h
+++ b/include/linux/libnvdimm.h
@@ -87,7 +87,7 @@ struct nvdimm_bus_descriptor {
 	ndctl_fn ndctl;
 	int (*flush_probe)(struct nvdimm_bus_descriptor *nd_desc);
 	int (*clear_to_send)(struct nvdimm_bus_descriptor *nd_desc,
-			struct nvdimm *nvdimm, unsigned int cmd);
+			struct nvdimm *nvdimm, unsigned int cmd, void *data);
 };
 
 struct nd_cmd_desc {