Merge tag 'staging-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO updates from Greg KH:
 "Here is the big set of Staging/IIO driver patches for 4.17-rc1.

  It is a lot, over 500 changes, but not huge by previous kernel release
  standards. We deleted more lines than we added again (27k added vs.
  91k remvoed), thanks to finally being able to delete the IRDA drivers
  and networking code.

  We also deleted the ccree crypto driver, but that's coming back in
  through the crypto tree to you, in a much cleaned-up form.

  Added this round is at lot of "mt7621" device support, which is for an
  embedded device that Neil Brown cares about, and of course a handful
  of new IIO drivers as well.

  And finally, the fsl-mc core code moved out of the staging tree to the
  "real" part of the kernel, which is nice to see happen as well.

  Full details are in the shortlog, which has all of the tiny cleanup
  patches described.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'staging-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (579 commits)
  staging: rtl8723bs: Remove yield call, replace with cond_resched()
  staging: rtl8723bs: Replace yield() call with cond_resched()
  staging: rtl8723bs: Remove unecessary newlines from 'odm.h'.
  staging: rtl8723bs: Rework 'struct _ODM_Phy_Status_Info_' coding style.
  staging: rtl8723bs: Rework 'struct _ODM_Per_Pkt_Info_' coding style.
  staging: rtl8723bs: Replace NULL pointer comparison with '!'.
  staging: rtl8723bs: Factor out rtl8723bs_recv_tasklet() sections.
  staging: rtl8723bs: Fix function signature that goes over 80 characters.
  staging: rtl8723bs: Fix lines too long in update_recvframe_attrib().
  staging: rtl8723bs: Remove unnecessary blank lines in 'rtl8723bs_recv.c'.
  staging: rtl8723bs: Change camel case to snake case in 'rtl8723bs_recv.c'.
  staging: rtl8723bs: Add missing braces in else statement.
  staging: rtl8723bs: Add spaces around ternary operators.
  staging: rtl8723bs: Fix lines with trailing open parentheses.
  staging: rtl8723bs: Remove unnecessary length #define's.
  staging: rtl8723bs: Fix IEEE80211 authentication algorithm constants.
  staging: rtl8723bs: Fix alignment in rtw_wx_set_auth().
  staging: rtl8723bs: Remove braces from single statement conditionals.
  staging: rtl8723bs: Remove unecessary braces from switch statement.
  staging: rtl8723bs: Fix newlines in rtw_wx_set_auth().
  ...

15 files changed, 4902 insertions, 0 deletions

diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig
index 57e011d36a79..769599bc1bab 100644
--- a/drivers/bus/Kconfig
+++ b/drivers/bus/Kconfig
@@ -199,4 +199,6 @@ config DA8XX_MSTPRI
 	  configuration. Allows to adjust the priorities of all master
 	  peripherals.
 
+source "drivers/bus/fsl-mc/Kconfig"
+
 endmenu
diff --git a/drivers/bus/Makefile b/drivers/bus/Makefile
index 9bcd0bf3954b..b666c49f249e 100644
--- a/drivers/bus/Makefile
+++ b/drivers/bus/Makefile
@@ -8,6 +8,10 @@ obj-$(CONFIG_ARM_CCI)		+= arm-cci.o
 obj-$(CONFIG_ARM_CCN)		+= arm-ccn.o
 
 obj-$(CONFIG_BRCMSTB_GISB_ARB)	+= brcmstb_gisb.o
+
+# DPAA2 fsl-mc bus
+obj-$(CONFIG_FSL_MC_BUS)	+= fsl-mc/
+
 obj-$(CONFIG_IMX_WEIM)		+= imx-weim.o
 obj-$(CONFIG_MIPS_CDMM)		+= mips_cdmm.o
 obj-$(CONFIG_MVEBU_MBUS) 	+= mvebu-mbus.o
diff --git a/drivers/bus/fsl-mc/Kconfig b/drivers/bus/fsl-mc/Kconfig
new file mode 100644
index 000000000000..c23c77c9b705
--- /dev/null
+++ b/drivers/bus/fsl-mc/Kconfig
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# DPAA2 fsl-mc bus
+#
+# Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
+#
+
+config FSL_MC_BUS
+	bool "QorIQ DPAA2 fsl-mc bus driver"
+	depends on OF && (ARCH_LAYERSCAPE || (COMPILE_TEST && (ARM || ARM64 || X86_LOCAL_APIC || PPC)))
+	select GENERIC_MSI_IRQ_DOMAIN
+	help
+	  Driver to enable the bus infrastructure for the QorIQ DPAA2
+	  architecture.  The fsl-mc bus driver handles discovery of
+	  DPAA2 objects (which are represented as Linux devices) and
+	  binding objects to drivers.
diff --git a/drivers/bus/fsl-mc/Makefile b/drivers/bus/fsl-mc/Makefile
new file mode 100644
index 000000000000..3c518c7e8374
--- /dev/null
+++ b/drivers/bus/fsl-mc/Makefile
@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Freescale Management Complex (MC) bus drivers
+#
+# Copyright (C) 2014 Freescale Semiconductor, Inc.
+#
+obj-$(CONFIG_FSL_MC_BUS) += mc-bus-driver.o
+
+mc-bus-driver-objs := fsl-mc-bus.o \
+		      mc-sys.o \
+		      mc-io.o \
+		      dpbp.o \
+		      dpcon.o \
+		      dprc.o \
+		      dprc-driver.o \
+		      fsl-mc-allocator.o \
+		      fsl-mc-msi.o \
+		      dpmcp.o
diff --git a/drivers/bus/fsl-mc/dpbp.c b/drivers/bus/fsl-mc/dpbp.c
new file mode 100644
index 000000000000..17e3c5d2f22e
--- /dev/null
+++ b/drivers/bus/fsl-mc/dpbp.c
@@ -0,0 +1,186 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/fsl/mc.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+/**
+ * dpbp_open() - Open a control session for the specified object.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @dpbp_id:	DPBP unique ID
+ * @token:	Returned token; use in subsequent API calls
+ *
+ * This function can be used to open a control session for an
+ * already created object; an object may have been declared in
+ * the DPL or by calling the dpbp_create function.
+ * This function returns a unique authentication token,
+ * associated with the specific object ID and the specific MC
+ * portal; this token must be used in all subsequent commands for
+ * this specific object
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpbp_open(struct fsl_mc_io *mc_io,
+	      u32 cmd_flags,
+	      int dpbp_id,
+	      u16 *token)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dpbp_cmd_open *cmd_params;
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPBP_CMDID_OPEN,
+					  cmd_flags, 0);
+	cmd_params = (struct dpbp_cmd_open *)cmd.params;
+	cmd_params->dpbp_id = cpu_to_le32(dpbp_id);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	*token = mc_cmd_hdr_read_token(&cmd);
+
+	return err;
+}
+EXPORT_SYMBOL_GPL(dpbp_open);
+
+/**
+ * dpbp_close() - Close the control session of the object
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPBP object
+ *
+ * After this function is called, no further operations are
+ * allowed on the object without opening a new control session.
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpbp_close(struct fsl_mc_io *mc_io,
+	       u32 cmd_flags,
+	       u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPBP_CMDID_CLOSE, cmd_flags,
+					  token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(dpbp_close);
+
+/**
+ * dpbp_enable() - Enable the DPBP.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPBP object
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpbp_enable(struct fsl_mc_io *mc_io,
+		u32 cmd_flags,
+		u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPBP_CMDID_ENABLE, cmd_flags,
+					  token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(dpbp_enable);
+
+/**
+ * dpbp_disable() - Disable the DPBP.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPBP object
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpbp_disable(struct fsl_mc_io *mc_io,
+		 u32 cmd_flags,
+		 u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPBP_CMDID_DISABLE,
+					  cmd_flags, token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(dpbp_disable);
+
+/**
+ * dpbp_reset() - Reset the DPBP, returns the object to initial state.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPBP object
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpbp_reset(struct fsl_mc_io *mc_io,
+	       u32 cmd_flags,
+	       u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPBP_CMDID_RESET,
+					  cmd_flags, token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(dpbp_reset);
+
+/**
+ * dpbp_get_attributes - Retrieve DPBP attributes.
+ *
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPBP object
+ * @attr:	Returned object's attributes
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpbp_get_attributes(struct fsl_mc_io *mc_io,
+			u32 cmd_flags,
+			u16 token,
+			struct dpbp_attr *attr)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dpbp_rsp_get_attributes *rsp_params;
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_ATTR,
+					  cmd_flags, token);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	rsp_params = (struct dpbp_rsp_get_attributes *)cmd.params;
+	attr->bpid = le16_to_cpu(rsp_params->bpid);
+	attr->id = le32_to_cpu(rsp_params->id);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(dpbp_get_attributes);
diff --git a/drivers/bus/fsl-mc/dpcon.c b/drivers/bus/fsl-mc/dpcon.c
new file mode 100644
index 000000000000..760555d7946e
--- /dev/null
+++ b/drivers/bus/fsl-mc/dpcon.c
@@ -0,0 +1,222 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/fsl/mc.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+/**
+ * dpcon_open() - Open a control session for the specified object
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @dpcon_id:	DPCON unique ID
+ * @token:	Returned token; use in subsequent API calls
+ *
+ * This function can be used to open a control session for an
+ * already created object; an object may have been declared in
+ * the DPL or by calling the dpcon_create() function.
+ * This function returns a unique authentication token,
+ * associated with the specific object ID and the specific MC
+ * portal; this token must be used in all subsequent commands for
+ * this specific object.
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpcon_open(struct fsl_mc_io *mc_io,
+	       u32 cmd_flags,
+	       int dpcon_id,
+	       u16 *token)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dpcon_cmd_open *dpcon_cmd;
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPCON_CMDID_OPEN,
+					  cmd_flags,
+					  0);
+	dpcon_cmd = (struct dpcon_cmd_open *)cmd.params;
+	dpcon_cmd->dpcon_id = cpu_to_le32(dpcon_id);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	*token = mc_cmd_hdr_read_token(&cmd);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(dpcon_open);
+
+/**
+ * dpcon_close() - Close the control session of the object
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPCON object
+ *
+ * After this function is called, no further operations are
+ * allowed on the object without opening a new control session.
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpcon_close(struct fsl_mc_io *mc_io,
+		u32 cmd_flags,
+		u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPCON_CMDID_CLOSE,
+					  cmd_flags,
+					  token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(dpcon_close);
+
+/**
+ * dpcon_enable() - Enable the DPCON
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPCON object
+ *
+ * Return:	'0' on Success; Error code otherwise
+ */
+int dpcon_enable(struct fsl_mc_io *mc_io,
+		 u32 cmd_flags,
+		 u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPCON_CMDID_ENABLE,
+					  cmd_flags,
+					  token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(dpcon_enable);
+
+/**
+ * dpcon_disable() - Disable the DPCON
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPCON object
+ *
+ * Return:	'0' on Success; Error code otherwise
+ */
+int dpcon_disable(struct fsl_mc_io *mc_io,
+		  u32 cmd_flags,
+		  u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPCON_CMDID_DISABLE,
+					  cmd_flags,
+					  token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(dpcon_disable);
+
+/**
+ * dpcon_reset() - Reset the DPCON, returns the object to initial state.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPCON object
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpcon_reset(struct fsl_mc_io *mc_io,
+		u32 cmd_flags,
+		u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPCON_CMDID_RESET,
+					  cmd_flags, token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(dpcon_reset);
+
+/**
+ * dpcon_get_attributes() - Retrieve DPCON attributes.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPCON object
+ * @attr:	Object's attributes
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpcon_get_attributes(struct fsl_mc_io *mc_io,
+			 u32 cmd_flags,
+			 u16 token,
+			 struct dpcon_attr *attr)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dpcon_rsp_get_attr *dpcon_rsp;
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPCON_CMDID_GET_ATTR,
+					  cmd_flags,
+					  token);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	dpcon_rsp = (struct dpcon_rsp_get_attr *)cmd.params;
+	attr->id = le32_to_cpu(dpcon_rsp->id);
+	attr->qbman_ch_id = le16_to_cpu(dpcon_rsp->qbman_ch_id);
+	attr->num_priorities = dpcon_rsp->num_priorities;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(dpcon_get_attributes);
+
+/**
+ * dpcon_set_notification() - Set DPCON notification destination
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPCON object
+ * @cfg:	Notification parameters
+ *
+ * Return:	'0' on Success; Error code otherwise
+ */
+int dpcon_set_notification(struct fsl_mc_io *mc_io,
+			   u32 cmd_flags,
+			   u16 token,
+			   struct dpcon_notification_cfg *cfg)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dpcon_cmd_set_notification *dpcon_cmd;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPCON_CMDID_SET_NOTIFICATION,
+					  cmd_flags,
+					  token);
+	dpcon_cmd = (struct dpcon_cmd_set_notification *)cmd.params;
+	dpcon_cmd->dpio_id = cpu_to_le32(cfg->dpio_id);
+	dpcon_cmd->priority = cfg->priority;
+	dpcon_cmd->user_ctx = cpu_to_le64(cfg->user_ctx);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(dpcon_set_notification);
diff --git a/drivers/bus/fsl-mc/dpmcp.c b/drivers/bus/fsl-mc/dpmcp.c
new file mode 100644
index 000000000000..5fbd0dbde24a
--- /dev/null
+++ b/drivers/bus/fsl-mc/dpmcp.c
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+/**
+ * dpmcp_open() - Open a control session for the specified object.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @dpmcp_id:	DPMCP unique ID
+ * @token:	Returned token; use in subsequent API calls
+ *
+ * This function can be used to open a control session for an
+ * already created object; an object may have been declared in
+ * the DPL or by calling the dpmcp_create function.
+ * This function returns a unique authentication token,
+ * associated with the specific object ID and the specific MC
+ * portal; this token must be used in all subsequent commands for
+ * this specific object
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpmcp_open(struct fsl_mc_io *mc_io,
+	       u32 cmd_flags,
+	       int dpmcp_id,
+	       u16 *token)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dpmcp_cmd_open *cmd_params;
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_OPEN,
+					  cmd_flags, 0);
+	cmd_params = (struct dpmcp_cmd_open *)cmd.params;
+	cmd_params->dpmcp_id = cpu_to_le32(dpmcp_id);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	*token = mc_cmd_hdr_read_token(&cmd);
+
+	return err;
+}
+
+/**
+ * dpmcp_close() - Close the control session of the object
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPMCP object
+ *
+ * After this function is called, no further operations are
+ * allowed on the object without opening a new control session.
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpmcp_close(struct fsl_mc_io *mc_io,
+		u32 cmd_flags,
+		u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_CLOSE,
+					  cmd_flags, token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpmcp_reset() - Reset the DPMCP, returns the object to initial state.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPMCP object
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dpmcp_reset(struct fsl_mc_io *mc_io,
+		u32 cmd_flags,
+		u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMCP_CMDID_RESET,
+					  cmd_flags, token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
diff --git a/drivers/bus/fsl-mc/dprc-driver.c b/drivers/bus/fsl-mc/dprc-driver.c
new file mode 100644
index 000000000000..52c7e15143d6
--- /dev/null
+++ b/drivers/bus/fsl-mc/dprc-driver.c
@@ -0,0 +1,809 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Freescale data path resource container (DPRC) driver
+ *
+ * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
+ * Author: German Rivera <German.Rivera@freescale.com>
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/msi.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+#define FSL_MC_DPRC_DRIVER_NAME    "fsl_mc_dprc"
+
+struct fsl_mc_child_objs {
+	int child_count;
+	struct fsl_mc_obj_desc *child_array;
+};
+
+static bool fsl_mc_device_match(struct fsl_mc_device *mc_dev,
+				struct fsl_mc_obj_desc *obj_desc)
+{
+	return mc_dev->obj_desc.id == obj_desc->id &&
+	       strcmp(mc_dev->obj_desc.type, obj_desc->type) == 0;
+
+}
+
+static int __fsl_mc_device_remove_if_not_in_mc(struct device *dev, void *data)
+{
+	int i;
+	struct fsl_mc_child_objs *objs;
+	struct fsl_mc_device *mc_dev;
+
+	mc_dev = to_fsl_mc_device(dev);
+	objs = data;
+
+	for (i = 0; i < objs->child_count; i++) {
+		struct fsl_mc_obj_desc *obj_desc = &objs->child_array[i];
+
+		if (strlen(obj_desc->type) != 0 &&
+		    fsl_mc_device_match(mc_dev, obj_desc))
+			break;
+	}
+
+	if (i == objs->child_count)
+		fsl_mc_device_remove(mc_dev);
+
+	return 0;
+}
+
+static int __fsl_mc_device_remove(struct device *dev, void *data)
+{
+	fsl_mc_device_remove(to_fsl_mc_device(dev));
+	return 0;
+}
+
+/**
+ * dprc_remove_devices - Removes devices for objects removed from a DPRC
+ *
+ * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
+ * @obj_desc_array: array of object descriptors for child objects currently
+ * present in the DPRC in the MC.
+ * @num_child_objects_in_mc: number of entries in obj_desc_array
+ *
+ * Synchronizes the state of the Linux bus driver with the actual state of
+ * the MC by removing devices that represent MC objects that have
+ * been dynamically removed in the physical DPRC.
+ */
+static void dprc_remove_devices(struct fsl_mc_device *mc_bus_dev,
+				struct fsl_mc_obj_desc *obj_desc_array,
+				int num_child_objects_in_mc)
+{
+	if (num_child_objects_in_mc != 0) {
+		/*
+		 * Remove child objects that are in the DPRC in Linux,
+		 * but not in the MC:
+		 */
+		struct fsl_mc_child_objs objs;
+
+		objs.child_count = num_child_objects_in_mc;
+		objs.child_array = obj_desc_array;
+		device_for_each_child(&mc_bus_dev->dev, &objs,
+				      __fsl_mc_device_remove_if_not_in_mc);
+	} else {
+		/*
+		 * There are no child objects for this DPRC in the MC.
+		 * So, remove all the child devices from Linux:
+		 */
+		device_for_each_child(&mc_bus_dev->dev, NULL,
+				      __fsl_mc_device_remove);
+	}
+}
+
+static int __fsl_mc_device_match(struct device *dev, void *data)
+{
+	struct fsl_mc_obj_desc *obj_desc = data;
+	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+
+	return fsl_mc_device_match(mc_dev, obj_desc);
+}
+
+static struct fsl_mc_device *fsl_mc_device_lookup(struct fsl_mc_obj_desc
+								*obj_desc,
+						  struct fsl_mc_device
+								*mc_bus_dev)
+{
+	struct device *dev;
+
+	dev = device_find_child(&mc_bus_dev->dev, obj_desc,
+				__fsl_mc_device_match);
+
+	return dev ? to_fsl_mc_device(dev) : NULL;
+}
+
+/**
+ * check_plugged_state_change - Check change in an MC object's plugged state
+ *
+ * @mc_dev: pointer to the fsl-mc device for a given MC object
+ * @obj_desc: pointer to the MC object's descriptor in the MC
+ *
+ * If the plugged state has changed from unplugged to plugged, the fsl-mc
+ * device is bound to the corresponding device driver.
+ * If the plugged state has changed from plugged to unplugged, the fsl-mc
+ * device is unbound from the corresponding device driver.
+ */
+static void check_plugged_state_change(struct fsl_mc_device *mc_dev,
+				       struct fsl_mc_obj_desc *obj_desc)
+{
+	int error;
+	u32 plugged_flag_at_mc =
+			obj_desc->state & FSL_MC_OBJ_STATE_PLUGGED;
+
+	if (plugged_flag_at_mc !=
+	    (mc_dev->obj_desc.state & FSL_MC_OBJ_STATE_PLUGGED)) {
+		if (plugged_flag_at_mc) {
+			mc_dev->obj_desc.state |= FSL_MC_OBJ_STATE_PLUGGED;
+			error = device_attach(&mc_dev->dev);
+			if (error < 0) {
+				dev_err(&mc_dev->dev,
+					"device_attach() failed: %d\n",
+					error);
+			}
+		} else {
+			mc_dev->obj_desc.state &= ~FSL_MC_OBJ_STATE_PLUGGED;
+			device_release_driver(&mc_dev->dev);
+		}
+	}
+}
+
+/**
+ * dprc_add_new_devices - Adds devices to the logical bus for a DPRC
+ *
+ * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
+ * @obj_desc_array: array of device descriptors for child devices currently
+ * present in the physical DPRC.
+ * @num_child_objects_in_mc: number of entries in obj_desc_array
+ *
+ * Synchronizes the state of the Linux bus driver with the actual
+ * state of the MC by adding objects that have been newly discovered
+ * in the physical DPRC.
+ */
+static void dprc_add_new_devices(struct fsl_mc_device *mc_bus_dev,
+				 struct fsl_mc_obj_desc *obj_desc_array,
+				 int num_child_objects_in_mc)
+{
+	int error;
+	int i;
+
+	for (i = 0; i < num_child_objects_in_mc; i++) {
+		struct fsl_mc_device *child_dev;
+		struct fsl_mc_obj_desc *obj_desc = &obj_desc_array[i];
+
+		if (strlen(obj_desc->type) == 0)
+			continue;
+
+		/*
+		 * Check if device is already known to Linux:
+		 */
+		child_dev = fsl_mc_device_lookup(obj_desc, mc_bus_dev);
+		if (child_dev) {
+			check_plugged_state_change(child_dev, obj_desc);
+			put_device(&child_dev->dev);
+			continue;
+		}
+
+		error = fsl_mc_device_add(obj_desc, NULL, &mc_bus_dev->dev,
+					  &child_dev);
+		if (error < 0)
+			continue;
+	}
+}
+
+/**
+ * dprc_scan_objects - Discover objects in a DPRC
+ *
+ * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
+ * @total_irq_count: If argument is provided the function populates the
+ * total number of IRQs created by objects in the DPRC.
+ *
+ * Detects objects added and removed from a DPRC and synchronizes the
+ * state of the Linux bus driver, MC by adding and removing
+ * devices accordingly.
+ * Two types of devices can be found in a DPRC: allocatable objects (e.g.,
+ * dpbp, dpmcp) and non-allocatable devices (e.g., dprc, dpni).
+ * All allocatable devices needed to be probed before all non-allocatable
+ * devices, to ensure that device drivers for non-allocatable
+ * devices can allocate any type of allocatable devices.
+ * That is, we need to ensure that the corresponding resource pools are
+ * populated before they can get allocation requests from probe callbacks
+ * of the device drivers for the non-allocatable devices.
+ */
+static int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev,
+			     unsigned int *total_irq_count)
+{
+	int num_child_objects;
+	int dprc_get_obj_failures;
+	int error;
+	unsigned int irq_count = mc_bus_dev->obj_desc.irq_count;
+	struct fsl_mc_obj_desc *child_obj_desc_array = NULL;
+	struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
+
+	error = dprc_get_obj_count(mc_bus_dev->mc_io,
+				   0,
+				   mc_bus_dev->mc_handle,
+				   &num_child_objects);
+	if (error < 0) {
+		dev_err(&mc_bus_dev->dev, "dprc_get_obj_count() failed: %d\n",
+			error);
+		return error;
+	}
+
+	if (num_child_objects != 0) {
+		int i;
+
+		child_obj_desc_array =
+		    devm_kmalloc_array(&mc_bus_dev->dev, num_child_objects,
+				       sizeof(*child_obj_desc_array),
+				       GFP_KERNEL);
+		if (!child_obj_desc_array)
+			return -ENOMEM;
+
+		/*
+		 * Discover objects currently present in the physical DPRC:
+		 */
+		dprc_get_obj_failures = 0;
+		for (i = 0; i < num_child_objects; i++) {
+			struct fsl_mc_obj_desc *obj_desc =
+			    &child_obj_desc_array[i];
+
+			error = dprc_get_obj(mc_bus_dev->mc_io,
+					     0,
+					     mc_bus_dev->mc_handle,
+					     i, obj_desc);
+			if (error < 0) {
+				dev_err(&mc_bus_dev->dev,
+					"dprc_get_obj(i=%d) failed: %d\n",
+					i, error);
+				/*
+				 * Mark the obj entry as "invalid", by using the
+				 * empty string as obj type:
+				 */
+				obj_desc->type[0] = '\0';
+				obj_desc->id = error;
+				dprc_get_obj_failures++;
+				continue;
+			}
+
+			/*
+			 * add a quirk for all versions of dpsec < 4.0...none
+			 * are coherent regardless of what the MC reports.
+			 */
+			if ((strcmp(obj_desc->type, "dpseci") == 0) &&
+			    (obj_desc->ver_major < 4))
+				obj_desc->flags |=
+					FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY;
+
+			irq_count += obj_desc->irq_count;
+			dev_dbg(&mc_bus_dev->dev,
+				"Discovered object: type %s, id %d\n",
+				obj_desc->type, obj_desc->id);
+		}
+
+		if (dprc_get_obj_failures != 0) {
+			dev_err(&mc_bus_dev->dev,
+				"%d out of %d devices could not be retrieved\n",
+				dprc_get_obj_failures, num_child_objects);
+		}
+	}
+
+	/*
+	 * Allocate IRQ's before binding the scanned devices with their
+	 * respective drivers.
+	 */
+	if (dev_get_msi_domain(&mc_bus_dev->dev) && !mc_bus->irq_resources) {
+		if (irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS) {
+			dev_warn(&mc_bus_dev->dev,
+				 "IRQs needed (%u) exceed IRQs preallocated (%u)\n",
+				 irq_count, FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
+		}
+
+		error = fsl_mc_populate_irq_pool(mc_bus,
+				FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
+		if (error < 0)
+			return error;
+	}
+
+	if (total_irq_count)
+		*total_irq_count = irq_count;
+
+	dprc_remove_devices(mc_bus_dev, child_obj_desc_array,
+			    num_child_objects);
+
+	dprc_add_new_devices(mc_bus_dev, child_obj_desc_array,
+			     num_child_objects);
+
+	if (child_obj_desc_array)
+		devm_kfree(&mc_bus_dev->dev, child_obj_desc_array);
+
+	return 0;
+}
+
+/**
+ * dprc_scan_container - Scans a physical DPRC and synchronizes Linux bus state
+ *
+ * @mc_bus_dev: pointer to the fsl-mc device that represents a DPRC object
+ *
+ * Scans the physical DPRC and synchronizes the state of the Linux
+ * bus driver with the actual state of the MC by adding and removing
+ * devices as appropriate.
+ */
+static int dprc_scan_container(struct fsl_mc_device *mc_bus_dev)
+{
+	int error;
+	struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
+
+	fsl_mc_init_all_resource_pools(mc_bus_dev);
+
+	/*
+	 * Discover objects in the DPRC:
+	 */
+	mutex_lock(&mc_bus->scan_mutex);
+	error = dprc_scan_objects(mc_bus_dev, NULL);
+	mutex_unlock(&mc_bus->scan_mutex);
+	if (error < 0) {
+		fsl_mc_cleanup_all_resource_pools(mc_bus_dev);
+		return error;
+	}
+
+	return 0;
+}
+
+/**
+ * dprc_irq0_handler - Regular ISR for DPRC interrupt 0
+ *
+ * @irq: IRQ number of the interrupt being handled
+ * @arg: Pointer to device structure
+ */
+static irqreturn_t dprc_irq0_handler(int irq_num, void *arg)
+{
+	return IRQ_WAKE_THREAD;
+}
+
+/**
+ * dprc_irq0_handler_thread - Handler thread function for DPRC interrupt 0
+ *
+ * @irq: IRQ number of the interrupt being handled
+ * @arg: Pointer to device structure
+ */
+static irqreturn_t dprc_irq0_handler_thread(int irq_num, void *arg)
+{
+	int error;
+	u32 status;
+	struct device *dev = arg;
+	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+	struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
+	struct fsl_mc_io *mc_io = mc_dev->mc_io;
+	struct msi_desc *msi_desc = mc_dev->irqs[0]->msi_desc;
+
+	dev_dbg(dev, "DPRC IRQ %d triggered on CPU %u\n",
+		irq_num, smp_processor_id());
+
+	if (!(mc_dev->flags & FSL_MC_IS_DPRC))
+		return IRQ_HANDLED;
+
+	mutex_lock(&mc_bus->scan_mutex);
+	if (!msi_desc || msi_desc->irq != (u32)irq_num)
+		goto out;
+
+	status = 0;
+	error = dprc_get_irq_status(mc_io, 0, mc_dev->mc_handle, 0,
+				    &status);
+	if (error < 0) {
+		dev_err(dev,
+			"dprc_get_irq_status() failed: %d\n", error);
+		goto out;
+	}
+
+	error = dprc_clear_irq_status(mc_io, 0, mc_dev->mc_handle, 0,
+				      status);
+	if (error < 0) {
+		dev_err(dev,
+			"dprc_clear_irq_status() failed: %d\n", error);
+		goto out;
+	}
+
+	if (status & (DPRC_IRQ_EVENT_OBJ_ADDED |
+		      DPRC_IRQ_EVENT_OBJ_REMOVED |
+		      DPRC_IRQ_EVENT_CONTAINER_DESTROYED |
+		      DPRC_IRQ_EVENT_OBJ_DESTROYED |
+		      DPRC_IRQ_EVENT_OBJ_CREATED)) {
+		unsigned int irq_count;
+
+		error = dprc_scan_objects(mc_dev, &irq_count);
+		if (error < 0) {
+			/*
+			 * If the error is -ENXIO, we ignore it, as it indicates
+			 * that the object scan was aborted, as we detected that
+			 * an object was removed from the DPRC in the MC, while
+			 * we were scanning the DPRC.
+			 */
+			if (error != -ENXIO) {
+				dev_err(dev, "dprc_scan_objects() failed: %d\n",
+					error);
+			}
+
+			goto out;
+		}
+
+		if (irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS) {
+			dev_warn(dev,
+				 "IRQs needed (%u) exceed IRQs preallocated (%u)\n",
+				 irq_count, FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS);
+		}
+	}
+
+out:
+	mutex_unlock(&mc_bus->scan_mutex);
+	return IRQ_HANDLED;
+}
+
+/*
+ * Disable and clear interrupt for a given DPRC object
+ */
+static int disable_dprc_irq(struct fsl_mc_device *mc_dev)
+{
+	int error;
+	struct fsl_mc_io *mc_io = mc_dev->mc_io;
+
+	/*
+	 * Disable generation of interrupt, while we configure it:
+	 */
+	error = dprc_set_irq_enable(mc_io, 0, mc_dev->mc_handle, 0, 0);
+	if (error < 0) {
+		dev_err(&mc_dev->dev,
+			"Disabling DPRC IRQ failed: dprc_set_irq_enable() failed: %d\n",
+			error);
+		return error;
+	}
+
+	/*
+	 * Disable all interrupt causes for the interrupt:
+	 */
+	error = dprc_set_irq_mask(mc_io, 0, mc_dev->mc_handle, 0, 0x0);
+	if (error < 0) {
+		dev_err(&mc_dev->dev,
+			"Disabling DPRC IRQ failed: dprc_set_irq_mask() failed: %d\n",
+			error);
+		return error;
+	}
+
+	/*
+	 * Clear any leftover interrupts:
+	 */
+	error = dprc_clear_irq_status(mc_io, 0, mc_dev->mc_handle, 0, ~0x0U);
+	if (error < 0) {
+		dev_err(&mc_dev->dev,
+			"Disabling DPRC IRQ failed: dprc_clear_irq_status() failed: %d\n",
+			error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int register_dprc_irq_handler(struct fsl_mc_device *mc_dev)
+{
+	int error;
+	struct fsl_mc_device_irq *irq = mc_dev->irqs[0];
+
+	/*
+	 * NOTE: devm_request_threaded_irq() invokes the device-specific
+	 * function that programs the MSI physically in the device
+	 */
+	error = devm_request_threaded_irq(&mc_dev->dev,
+					  irq->msi_desc->irq,
+					  dprc_irq0_handler,
+					  dprc_irq0_handler_thread,
+					  IRQF_NO_SUSPEND | IRQF_ONESHOT,
+					  dev_name(&mc_dev->dev),
+					  &mc_dev->dev);
+	if (error < 0) {
+		dev_err(&mc_dev->dev,
+			"devm_request_threaded_irq() failed: %d\n",
+			error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int enable_dprc_irq(struct fsl_mc_device *mc_dev)
+{
+	int error;
+
+	/*
+	 * Enable all interrupt causes for the interrupt:
+	 */
+	error = dprc_set_irq_mask(mc_dev->mc_io, 0, mc_dev->mc_handle, 0,
+				  ~0x0u);
+	if (error < 0) {
+		dev_err(&mc_dev->dev,
+			"Enabling DPRC IRQ failed: dprc_set_irq_mask() failed: %d\n",
+			error);
+
+		return error;
+	}
+
+	/*
+	 * Enable generation of the interrupt:
+	 */
+	error = dprc_set_irq_enable(mc_dev->mc_io, 0, mc_dev->mc_handle, 0, 1);
+	if (error < 0) {
+		dev_err(&mc_dev->dev,
+			"Enabling DPRC IRQ failed: dprc_set_irq_enable() failed: %d\n",
+			error);
+
+		return error;
+	}
+
+	return 0;
+}
+
+/*
+ * Setup interrupt for a given DPRC device
+ */
+static int dprc_setup_irq(struct fsl_mc_device *mc_dev)
+{
+	int error;
+
+	error = fsl_mc_allocate_irqs(mc_dev);
+	if (error < 0)
+		return error;
+
+	error = disable_dprc_irq(mc_dev);
+	if (error < 0)
+		goto error_free_irqs;
+
+	error = register_dprc_irq_handler(mc_dev);
+	if (error < 0)
+		goto error_free_irqs;
+
+	error = enable_dprc_irq(mc_dev);
+	if (error < 0)
+		goto error_free_irqs;
+
+	return 0;
+
+error_free_irqs:
+	fsl_mc_free_irqs(mc_dev);
+	return error;
+}
+
+/**
+ * dprc_probe - callback invoked when a DPRC is being bound to this driver
+ *
+ * @mc_dev: Pointer to fsl-mc device representing a DPRC
+ *
+ * It opens the physical DPRC in the MC.
+ * It scans the DPRC to discover the MC objects contained in it.
+ * It creates the interrupt pool for the MC bus associated with the DPRC.
+ * It configures the interrupts for the DPRC device itself.
+ */
+static int dprc_probe(struct fsl_mc_device *mc_dev)
+{
+	int error;
+	size_t region_size;
+	struct device *parent_dev = mc_dev->dev.parent;
+	struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
+	bool mc_io_created = false;
+	bool msi_domain_set = false;
+	u16 major_ver, minor_ver;
+
+	if (!is_fsl_mc_bus_dprc(mc_dev))
+		return -EINVAL;
+
+	if (dev_get_msi_domain(&mc_dev->dev))
+		return -EINVAL;
+
+	if (!mc_dev->mc_io) {
+		/*
+		 * This is a child DPRC:
+		 */
+		if (!dev_is_fsl_mc(parent_dev))
+			return -EINVAL;
+
+		if (mc_dev->obj_desc.region_count == 0)
+			return -EINVAL;
+
+		region_size = resource_size(mc_dev->regions);
+
+		error = fsl_create_mc_io(&mc_dev->dev,
+					 mc_dev->regions[0].start,
+					 region_size,
+					 NULL,
+					 FSL_MC_IO_ATOMIC_CONTEXT_PORTAL,
+					 &mc_dev->mc_io);
+		if (error < 0)
+			return error;
+
+		mc_io_created = true;
+
+		/*
+		 * Inherit parent MSI domain:
+		 */
+		dev_set_msi_domain(&mc_dev->dev,
+				   dev_get_msi_domain(parent_dev));
+		msi_domain_set = true;
+	} else {
+		/*
+		 * This is a root DPRC
+		 */
+		struct irq_domain *mc_msi_domain;
+
+		if (dev_is_fsl_mc(parent_dev))
+			return -EINVAL;
+
+		error = fsl_mc_find_msi_domain(parent_dev,
+					       &mc_msi_domain);
+		if (error < 0) {
+			dev_warn(&mc_dev->dev,
+				 "WARNING: MC bus without interrupt support\n");
+		} else {
+			dev_set_msi_domain(&mc_dev->dev, mc_msi_domain);
+			msi_domain_set = true;
+		}
+	}
+
+	error = dprc_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id,
+			  &mc_dev->mc_handle);
+	if (error < 0) {
+		dev_err(&mc_dev->dev, "dprc_open() failed: %d\n", error);
+		goto error_cleanup_msi_domain;
+	}
+
+	error = dprc_get_attributes(mc_dev->mc_io, 0, mc_dev->mc_handle,
+				    &mc_bus->dprc_attr);
+	if (error < 0) {
+		dev_err(&mc_dev->dev, "dprc_get_attributes() failed: %d\n",
+			error);
+		goto error_cleanup_open;
+	}
+
+	error = dprc_get_api_version(mc_dev->mc_io, 0,
+				     &major_ver,
+				     &minor_ver);
+	if (error < 0) {
+		dev_err(&mc_dev->dev, "dprc_get_api_version() failed: %d\n",
+			error);
+		goto error_cleanup_open;
+	}
+
+	if (major_ver < DPRC_MIN_VER_MAJOR ||
+	    (major_ver == DPRC_MIN_VER_MAJOR &&
+	     minor_ver < DPRC_MIN_VER_MINOR)) {
+		dev_err(&mc_dev->dev,
+			"ERROR: DPRC version %d.%d not supported\n",
+			major_ver, minor_ver);
+		error = -ENOTSUPP;
+		goto error_cleanup_open;
+	}
+
+	mutex_init(&mc_bus->scan_mutex);
+
+	/*
+	 * Discover MC objects in DPRC object:
+	 */
+	error = dprc_scan_container(mc_dev);
+	if (error < 0)
+		goto error_cleanup_open;
+
+	/*
+	 * Configure interrupt for the DPRC object associated with this MC bus:
+	 */
+	error = dprc_setup_irq(mc_dev);
+	if (error < 0)
+		goto error_cleanup_open;
+
+	dev_info(&mc_dev->dev, "DPRC device bound to driver");
+	return 0;
+
+error_cleanup_open:
+	(void)dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
+
+error_cleanup_msi_domain:
+	if (msi_domain_set)
+		dev_set_msi_domain(&mc_dev->dev, NULL);
+
+	if (mc_io_created) {
+		fsl_destroy_mc_io(mc_dev->mc_io);
+		mc_dev->mc_io = NULL;
+	}
+
+	return error;
+}
+
+/*
+ * Tear down interrupt for a given DPRC object
+ */
+static void dprc_teardown_irq(struct fsl_mc_device *mc_dev)
+{
+	struct fsl_mc_device_irq *irq = mc_dev->irqs[0];
+
+	(void)disable_dprc_irq(mc_dev);
+
+	devm_free_irq(&mc_dev->dev, irq->msi_desc->irq, &mc_dev->dev);
+
+	fsl_mc_free_irqs(mc_dev);
+}
+
+/**
+ * dprc_remove - callback invoked when a DPRC is being unbound from this driver
+ *
+ * @mc_dev: Pointer to fsl-mc device representing the DPRC
+ *
+ * It removes the DPRC's child objects from Linux (not from the MC) and
+ * closes the DPRC device in the MC.
+ * It tears down the interrupts that were configured for the DPRC device.
+ * It destroys the interrupt pool associated with this MC bus.
+ */
+static int dprc_remove(struct fsl_mc_device *mc_dev)
+{
+	int error;
+	struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_dev);
+
+	if (!is_fsl_mc_bus_dprc(mc_dev))
+		return -EINVAL;
+	if (!mc_dev->mc_io)
+		return -EINVAL;
+
+	if (!mc_bus->irq_resources)
+		return -EINVAL;
+
+	if (dev_get_msi_domain(&mc_dev->dev))
+		dprc_teardown_irq(mc_dev);
+
+	device_for_each_child(&mc_dev->dev, NULL, __fsl_mc_device_remove);
+
+	if (dev_get_msi_domain(&mc_dev->dev)) {
+		fsl_mc_cleanup_irq_pool(mc_bus);
+		dev_set_msi_domain(&mc_dev->dev, NULL);
+	}
+
+	fsl_mc_cleanup_all_resource_pools(mc_dev);
+
+	error = dprc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
+	if (error < 0)
+		dev_err(&mc_dev->dev, "dprc_close() failed: %d\n", error);
+
+	if (!fsl_mc_is_root_dprc(&mc_dev->dev)) {
+		fsl_destroy_mc_io(mc_dev->mc_io);
+		mc_dev->mc_io = NULL;
+	}
+
+	dev_info(&mc_dev->dev, "DPRC device unbound from driver");
+	return 0;
+}
+
+static const struct fsl_mc_device_id match_id_table[] = {
+	{
+	 .vendor = FSL_MC_VENDOR_FREESCALE,
+	 .obj_type = "dprc"},
+	{.vendor = 0x0},
+};
+
+static struct fsl_mc_driver dprc_driver = {
+	.driver = {
+		   .name = FSL_MC_DPRC_DRIVER_NAME,
+		   .owner = THIS_MODULE,
+		   .pm = NULL,
+		   },
+	.match_id_table = match_id_table,
+	.probe = dprc_probe,
+	.remove = dprc_remove,
+};
+
+int __init dprc_driver_init(void)
+{
+	return fsl_mc_driver_register(&dprc_driver);
+}
+
+void dprc_driver_exit(void)
+{
+	fsl_mc_driver_unregister(&dprc_driver);
+}
diff --git a/drivers/bus/fsl-mc/dprc.c b/drivers/bus/fsl-mc/dprc.c
new file mode 100644
index 000000000000..1c3f62182266
--- /dev/null
+++ b/drivers/bus/fsl-mc/dprc.c
@@ -0,0 +1,532 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+/**
+ * dprc_open() - Open DPRC object for use
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @container_id: Container ID to open
+ * @token:	Returned token of DPRC object
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ *
+ * @warning	Required before any operation on the object.
+ */
+int dprc_open(struct fsl_mc_io *mc_io,
+	      u32 cmd_flags,
+	      int container_id,
+	      u16 *token)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dprc_cmd_open *cmd_params;
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_OPEN, cmd_flags,
+					  0);
+	cmd_params = (struct dprc_cmd_open *)cmd.params;
+	cmd_params->container_id = cpu_to_le32(container_id);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	*token = mc_cmd_hdr_read_token(&cmd);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(dprc_open);
+
+/**
+ * dprc_close() - Close the control session of the object
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRC object
+ *
+ * After this function is called, no further operations are
+ * allowed on the object without opening a new control session.
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprc_close(struct fsl_mc_io *mc_io,
+	       u32 cmd_flags,
+	       u16 token)
+{
+	struct fsl_mc_command cmd = { 0 };
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_CLOSE, cmd_flags,
+					  token);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(dprc_close);
+
+/**
+ * dprc_set_irq() - Set IRQ information for the DPRC to trigger an interrupt.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRC object
+ * @irq_index:	Identifies the interrupt index to configure
+ * @irq_cfg:	IRQ configuration
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprc_set_irq(struct fsl_mc_io *mc_io,
+		 u32 cmd_flags,
+		 u16 token,
+		 u8 irq_index,
+		 struct dprc_irq_cfg *irq_cfg)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dprc_cmd_set_irq *cmd_params;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dprc_cmd_set_irq *)cmd.params;
+	cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
+	cmd_params->irq_index = irq_index;
+	cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
+	cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dprc_set_irq_enable() - Set overall interrupt state.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRC object
+ * @irq_index:	The interrupt index to configure
+ * @en:		Interrupt state - enable = 1, disable = 0
+ *
+ * Allows GPP software to control when interrupts are generated.
+ * Each interrupt can have up to 32 causes.  The enable/disable control's the
+ * overall interrupt state. if the interrupt is disabled no causes will cause
+ * an interrupt.
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprc_set_irq_enable(struct fsl_mc_io *mc_io,
+			u32 cmd_flags,
+			u16 token,
+			u8 irq_index,
+			u8 en)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dprc_cmd_set_irq_enable *cmd_params;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ_ENABLE,
+					  cmd_flags, token);
+	cmd_params = (struct dprc_cmd_set_irq_enable *)cmd.params;
+	cmd_params->enable = en & DPRC_ENABLE;
+	cmd_params->irq_index = irq_index;
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dprc_set_irq_mask() - Set interrupt mask.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRC object
+ * @irq_index:	The interrupt index to configure
+ * @mask:	event mask to trigger interrupt;
+ *			each bit:
+ *				0 = ignore event
+ *				1 = consider event for asserting irq
+ *
+ * Every interrupt can have up to 32 causes and the interrupt model supports
+ * masking/unmasking each cause independently
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprc_set_irq_mask(struct fsl_mc_io *mc_io,
+		      u32 cmd_flags,
+		      u16 token,
+		      u8 irq_index,
+		      u32 mask)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dprc_cmd_set_irq_mask *cmd_params;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ_MASK,
+					  cmd_flags, token);
+	cmd_params = (struct dprc_cmd_set_irq_mask *)cmd.params;
+	cmd_params->mask = cpu_to_le32(mask);
+	cmd_params->irq_index = irq_index;
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dprc_get_irq_status() - Get the current status of any pending interrupts.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRC object
+ * @irq_index:	The interrupt index to configure
+ * @status:	Returned interrupts status - one bit per cause:
+ *			0 = no interrupt pending
+ *			1 = interrupt pending
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprc_get_irq_status(struct fsl_mc_io *mc_io,
+			u32 cmd_flags,
+			u16 token,
+			u8 irq_index,
+			u32 *status)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dprc_cmd_get_irq_status *cmd_params;
+	struct dprc_rsp_get_irq_status *rsp_params;
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_IRQ_STATUS,
+					  cmd_flags, token);
+	cmd_params = (struct dprc_cmd_get_irq_status *)cmd.params;
+	cmd_params->status = cpu_to_le32(*status);
+	cmd_params->irq_index = irq_index;
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	rsp_params = (struct dprc_rsp_get_irq_status *)cmd.params;
+	*status = le32_to_cpu(rsp_params->status);
+
+	return 0;
+}
+
+/**
+ * dprc_clear_irq_status() - Clear a pending interrupt's status
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRC object
+ * @irq_index:	The interrupt index to configure
+ * @status:	bits to clear (W1C) - one bit per cause:
+ *					0 = don't change
+ *					1 = clear status bit
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprc_clear_irq_status(struct fsl_mc_io *mc_io,
+			  u32 cmd_flags,
+			  u16 token,
+			  u8 irq_index,
+			  u32 status)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dprc_cmd_clear_irq_status *cmd_params;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_CLEAR_IRQ_STATUS,
+					  cmd_flags, token);
+	cmd_params = (struct dprc_cmd_clear_irq_status *)cmd.params;
+	cmd_params->status = cpu_to_le32(status);
+	cmd_params->irq_index = irq_index;
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dprc_get_attributes() - Obtains container attributes
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRC object
+ * @attributes	Returned container attributes
+ *
+ * Return:     '0' on Success; Error code otherwise.
+ */
+int dprc_get_attributes(struct fsl_mc_io *mc_io,
+			u32 cmd_flags,
+			u16 token,
+			struct dprc_attributes *attr)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dprc_rsp_get_attributes *rsp_params;
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_ATTR,
+					  cmd_flags,
+					  token);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	rsp_params = (struct dprc_rsp_get_attributes *)cmd.params;
+	attr->container_id = le32_to_cpu(rsp_params->container_id);
+	attr->icid = le16_to_cpu(rsp_params->icid);
+	attr->options = le32_to_cpu(rsp_params->options);
+	attr->portal_id = le32_to_cpu(rsp_params->portal_id);
+
+	return 0;
+}
+
+/**
+ * dprc_get_obj_count() - Obtains the number of objects in the DPRC
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRC object
+ * @obj_count:	Number of objects assigned to the DPRC
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprc_get_obj_count(struct fsl_mc_io *mc_io,
+		       u32 cmd_flags,
+		       u16 token,
+		       int *obj_count)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dprc_rsp_get_obj_count *rsp_params;
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_COUNT,
+					  cmd_flags, token);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	rsp_params = (struct dprc_rsp_get_obj_count *)cmd.params;
+	*obj_count = le32_to_cpu(rsp_params->obj_count);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(dprc_get_obj_count);
+
+/**
+ * dprc_get_obj() - Get general information on an object
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRC object
+ * @obj_index:	Index of the object to be queried (< obj_count)
+ * @obj_desc:	Returns the requested object descriptor
+ *
+ * The object descriptors are retrieved one by one by incrementing
+ * obj_index up to (not including) the value of obj_count returned
+ * from dprc_get_obj_count(). dprc_get_obj_count() must
+ * be called prior to dprc_get_obj().
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprc_get_obj(struct fsl_mc_io *mc_io,
+		 u32 cmd_flags,
+		 u16 token,
+		 int obj_index,
+		 struct fsl_mc_obj_desc *obj_desc)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dprc_cmd_get_obj *cmd_params;
+	struct dprc_rsp_get_obj *rsp_params;
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dprc_cmd_get_obj *)cmd.params;
+	cmd_params->obj_index = cpu_to_le32(obj_index);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	rsp_params = (struct dprc_rsp_get_obj *)cmd.params;
+	obj_desc->id = le32_to_cpu(rsp_params->id);
+	obj_desc->vendor = le16_to_cpu(rsp_params->vendor);
+	obj_desc->irq_count = rsp_params->irq_count;
+	obj_desc->region_count = rsp_params->region_count;
+	obj_desc->state = le32_to_cpu(rsp_params->state);
+	obj_desc->ver_major = le16_to_cpu(rsp_params->version_major);
+	obj_desc->ver_minor = le16_to_cpu(rsp_params->version_minor);
+	obj_desc->flags = le16_to_cpu(rsp_params->flags);
+	strncpy(obj_desc->type, rsp_params->type, 16);
+	obj_desc->type[15] = '\0';
+	strncpy(obj_desc->label, rsp_params->label, 16);
+	obj_desc->label[15] = '\0';
+	return 0;
+}
+EXPORT_SYMBOL_GPL(dprc_get_obj);
+
+/**
+ * dprc_set_obj_irq() - Set IRQ information for object to trigger an interrupt.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRC object
+ * @obj_type:	Type of the object to set its IRQ
+ * @obj_id:	ID of the object to set its IRQ
+ * @irq_index:	The interrupt index to configure
+ * @irq_cfg:	IRQ configuration
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprc_set_obj_irq(struct fsl_mc_io *mc_io,
+		     u32 cmd_flags,
+		     u16 token,
+		     char *obj_type,
+		     int obj_id,
+		     u8 irq_index,
+		     struct dprc_irq_cfg *irq_cfg)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dprc_cmd_set_obj_irq *cmd_params;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_OBJ_IRQ,
+					  cmd_flags,
+					  token);
+	cmd_params = (struct dprc_cmd_set_obj_irq *)cmd.params;
+	cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
+	cmd_params->irq_index = irq_index;
+	cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
+	cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);
+	cmd_params->obj_id = cpu_to_le32(obj_id);
+	strncpy(cmd_params->obj_type, obj_type, 16);
+	cmd_params->obj_type[15] = '\0';
+
+	/* send command to mc*/
+	return mc_send_command(mc_io, &cmd);
+}
+EXPORT_SYMBOL_GPL(dprc_set_obj_irq);
+
+/**
+ * dprc_get_obj_region() - Get region information for a specified object.
+ * @mc_io:	Pointer to MC portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token:	Token of DPRC object
+ * @obj_type;	Object type as returned in dprc_get_obj()
+ * @obj_id:	Unique object instance as returned in dprc_get_obj()
+ * @region_index: The specific region to query
+ * @region_desc:  Returns the requested region descriptor
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprc_get_obj_region(struct fsl_mc_io *mc_io,
+			u32 cmd_flags,
+			u16 token,
+			char *obj_type,
+			int obj_id,
+			u8 region_index,
+			struct dprc_region_desc *region_desc)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dprc_cmd_get_obj_region *cmd_params;
+	struct dprc_rsp_get_obj_region *rsp_params;
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_REG,
+					  cmd_flags, token);
+	cmd_params = (struct dprc_cmd_get_obj_region *)cmd.params;
+	cmd_params->obj_id = cpu_to_le32(obj_id);
+	cmd_params->region_index = region_index;
+	strncpy(cmd_params->obj_type, obj_type, 16);
+	cmd_params->obj_type[15] = '\0';
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	rsp_params = (struct dprc_rsp_get_obj_region *)cmd.params;
+	region_desc->base_offset = le64_to_cpu(rsp_params->base_addr);
+	region_desc->size = le32_to_cpu(rsp_params->size);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(dprc_get_obj_region);
+
+/**
+ * dprc_get_api_version - Get Data Path Resource Container API version
+ * @mc_io:	Pointer to Mc portal's I/O object
+ * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
+ * @major_ver:	Major version of Data Path Resource Container API
+ * @minor_ver:	Minor version of Data Path Resource Container API
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprc_get_api_version(struct fsl_mc_io *mc_io,
+			 u32 cmd_flags,
+			 u16 *major_ver,
+			 u16 *minor_ver)
+{
+	struct fsl_mc_command cmd = { 0 };
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_API_VERSION,
+					  cmd_flags, 0);
+
+	/* send command to mc */
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	mc_cmd_read_api_version(&cmd, major_ver, minor_ver);
+
+	return 0;
+}
+
+/**
+ * dprc_get_container_id - Get container ID associated with a given portal.
+ * @mc_io:		Pointer to Mc portal's I/O object
+ * @cmd_flags:		Command flags; one or more of 'MC_CMD_FLAG_'
+ * @container_id:	Requested container id
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+int dprc_get_container_id(struct fsl_mc_io *mc_io,
+			  u32 cmd_flags,
+			  int *container_id)
+{
+	struct fsl_mc_command cmd = { 0 };
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_CONT_ID,
+					  cmd_flags,
+					  0);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	*container_id = (int)mc_cmd_read_object_id(&cmd);
+
+	return 0;
+}
diff --git a/drivers/bus/fsl-mc/fsl-mc-allocator.c b/drivers/bus/fsl-mc/fsl-mc-allocator.c
new file mode 100644
index 000000000000..fb1442b08962
--- /dev/null
+++ b/drivers/bus/fsl-mc/fsl-mc-allocator.c
@@ -0,0 +1,653 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * fsl-mc object allocator driver
+ *
+ * Copyright (C) 2013-2016 Freescale Semiconductor, Inc.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/msi.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+static bool __must_check fsl_mc_is_allocatable(struct fsl_mc_device *mc_dev)
+{
+	return is_fsl_mc_bus_dpbp(mc_dev) ||
+	       is_fsl_mc_bus_dpmcp(mc_dev) ||
+	       is_fsl_mc_bus_dpcon(mc_dev);
+}
+
+/**
+ * fsl_mc_resource_pool_add_device - add allocatable object to a resource
+ * pool of a given fsl-mc bus
+ *
+ * @mc_bus: pointer to the fsl-mc bus
+ * @pool_type: pool type
+ * @mc_dev: pointer to allocatable fsl-mc device
+ */
+static int __must_check fsl_mc_resource_pool_add_device(struct fsl_mc_bus
+								*mc_bus,
+							enum fsl_mc_pool_type
+								pool_type,
+							struct fsl_mc_device
+								*mc_dev)
+{
+	struct fsl_mc_resource_pool *res_pool;
+	struct fsl_mc_resource *resource;
+	struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
+	int error = -EINVAL;
+
+	if (pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES)
+		goto out;
+	if (!fsl_mc_is_allocatable(mc_dev))
+		goto out;
+	if (mc_dev->resource)
+		goto out;
+
+	res_pool = &mc_bus->resource_pools[pool_type];
+	if (res_pool->type != pool_type)
+		goto out;
+	if (res_pool->mc_bus != mc_bus)
+		goto out;
+
+	mutex_lock(&res_pool->mutex);
+
+	if (res_pool->max_count < 0)
+		goto out_unlock;
+	if (res_pool->free_count < 0 ||
+	    res_pool->free_count > res_pool->max_count)
+		goto out_unlock;
+
+	resource = devm_kzalloc(&mc_bus_dev->dev, sizeof(*resource),
+				GFP_KERNEL);
+	if (!resource) {
+		error = -ENOMEM;
+		dev_err(&mc_bus_dev->dev,
+			"Failed to allocate memory for fsl_mc_resource\n");
+		goto out_unlock;
+	}
+
+	resource->type = pool_type;
+	resource->id = mc_dev->obj_desc.id;
+	resource->data = mc_dev;
+	resource->parent_pool = res_pool;
+	INIT_LIST_HEAD(&resource->node);
+	list_add_tail(&resource->node, &res_pool->free_list);
+	mc_dev->resource = resource;
+	res_pool->free_count++;
+	res_pool->max_count++;
+	error = 0;
+out_unlock:
+	mutex_unlock(&res_pool->mutex);
+out:
+	return error;
+}
+
+/**
+ * fsl_mc_resource_pool_remove_device - remove an allocatable device from a
+ * resource pool
+ *
+ * @mc_dev: pointer to allocatable fsl-mc device
+ *
+ * It permanently removes an allocatable fsl-mc device from the resource
+ * pool. It's an error if the device is in use.
+ */
+static int __must_check fsl_mc_resource_pool_remove_device(struct fsl_mc_device
+								   *mc_dev)
+{
+	struct fsl_mc_device *mc_bus_dev;
+	struct fsl_mc_bus *mc_bus;
+	struct fsl_mc_resource_pool *res_pool;
+	struct fsl_mc_resource *resource;
+	int error = -EINVAL;
+
+	if (!fsl_mc_is_allocatable(mc_dev))
+		goto out;
+
+	resource = mc_dev->resource;
+	if (!resource || resource->data != mc_dev)
+		goto out;
+
+	mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
+	mc_bus = to_fsl_mc_bus(mc_bus_dev);
+	res_pool = resource->parent_pool;
+	if (res_pool != &mc_bus->resource_pools[resource->type])
+		goto out;
+
+	mutex_lock(&res_pool->mutex);
+
+	if (res_pool->max_count <= 0)
+		goto out_unlock;
+	if (res_pool->free_count <= 0 ||
+	    res_pool->free_count > res_pool->max_count)
+		goto out_unlock;
+
+	/*
+	 * If the device is currently allocated, its resource is not
+	 * in the free list and thus, the device cannot be removed.
+	 */
+	if (list_empty(&resource->node)) {
+		error = -EBUSY;
+		dev_err(&mc_bus_dev->dev,
+			"Device %s cannot be removed from resource pool\n",
+			dev_name(&mc_dev->dev));
+		goto out_unlock;
+	}
+
+	list_del_init(&resource->node);
+	res_pool->free_count--;
+	res_pool->max_count--;
+
+	devm_kfree(&mc_bus_dev->dev, resource);
+	mc_dev->resource = NULL;
+	error = 0;
+out_unlock:
+	mutex_unlock(&res_pool->mutex);
+out:
+	return error;
+}
+
+static const char *const fsl_mc_pool_type_strings[] = {
+	[FSL_MC_POOL_DPMCP] = "dpmcp",
+	[FSL_MC_POOL_DPBP] = "dpbp",
+	[FSL_MC_POOL_DPCON] = "dpcon",
+	[FSL_MC_POOL_IRQ] = "irq",
+};
+
+static int __must_check object_type_to_pool_type(const char *object_type,
+						 enum fsl_mc_pool_type
+								*pool_type)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(fsl_mc_pool_type_strings); i++) {
+		if (strcmp(object_type, fsl_mc_pool_type_strings[i]) == 0) {
+			*pool_type = i;
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+
+int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
+					  enum fsl_mc_pool_type pool_type,
+					  struct fsl_mc_resource **new_resource)
+{
+	struct fsl_mc_resource_pool *res_pool;
+	struct fsl_mc_resource *resource;
+	struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
+	int error = -EINVAL;
+
+	BUILD_BUG_ON(ARRAY_SIZE(fsl_mc_pool_type_strings) !=
+		     FSL_MC_NUM_POOL_TYPES);
+
+	*new_resource = NULL;
+	if (pool_type < 0 || pool_type >= FSL_MC_NUM_POOL_TYPES)
+		goto out;
+
+	res_pool = &mc_bus->resource_pools[pool_type];
+	if (res_pool->mc_bus != mc_bus)
+		goto out;
+
+	mutex_lock(&res_pool->mutex);
+	resource = list_first_entry_or_null(&res_pool->free_list,
+					    struct fsl_mc_resource, node);
+
+	if (!resource) {
+		error = -ENXIO;
+		dev_err(&mc_bus_dev->dev,
+			"No more resources of type %s left\n",
+			fsl_mc_pool_type_strings[pool_type]);
+		goto out_unlock;
+	}
+
+	if (resource->type != pool_type)
+		goto out_unlock;
+	if (resource->parent_pool != res_pool)
+		goto out_unlock;
+	if (res_pool->free_count <= 0 ||
+	    res_pool->free_count > res_pool->max_count)
+		goto out_unlock;
+
+	list_del_init(&resource->node);
+
+	res_pool->free_count--;
+	error = 0;
+out_unlock:
+	mutex_unlock(&res_pool->mutex);
+	*new_resource = resource;
+out:
+	return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_resource_allocate);
+
+void fsl_mc_resource_free(struct fsl_mc_resource *resource)
+{
+	struct fsl_mc_resource_pool *res_pool;
+
+	res_pool = resource->parent_pool;
+	if (resource->type != res_pool->type)
+		return;
+
+	mutex_lock(&res_pool->mutex);
+	if (res_pool->free_count < 0 ||
+	    res_pool->free_count >= res_pool->max_count)
+		goto out_unlock;
+
+	if (!list_empty(&resource->node))
+		goto out_unlock;
+
+	list_add_tail(&resource->node, &res_pool->free_list);
+	res_pool->free_count++;
+out_unlock:
+	mutex_unlock(&res_pool->mutex);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_resource_free);
+
+/**
+ * fsl_mc_object_allocate - Allocates an fsl-mc object of the given
+ * pool type from a given fsl-mc bus instance
+ *
+ * @mc_dev: fsl-mc device which is used in conjunction with the
+ * allocated object
+ * @pool_type: pool type
+ * @new_mc_dev: pointer to area where the pointer to the allocated device
+ * is to be returned
+ *
+ * Allocatable objects are always used in conjunction with some functional
+ * device.  This function allocates an object of the specified type from
+ * the DPRC containing the functional device.
+ *
+ * NOTE: pool_type must be different from FSL_MC_POOL_MCP, since MC
+ * portals are allocated using fsl_mc_portal_allocate(), instead of
+ * this function.
+ */
+int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev,
+					enum fsl_mc_pool_type pool_type,
+					struct fsl_mc_device **new_mc_adev)
+{
+	struct fsl_mc_device *mc_bus_dev;
+	struct fsl_mc_bus *mc_bus;
+	struct fsl_mc_device *mc_adev;
+	int error = -EINVAL;
+	struct fsl_mc_resource *resource = NULL;
+
+	*new_mc_adev = NULL;
+	if (mc_dev->flags & FSL_MC_IS_DPRC)
+		goto error;
+
+	if (!dev_is_fsl_mc(mc_dev->dev.parent))
+		goto error;
+
+	if (pool_type == FSL_MC_POOL_DPMCP)
+		goto error;
+
+	mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
+	mc_bus = to_fsl_mc_bus(mc_bus_dev);
+	error = fsl_mc_resource_allocate(mc_bus, pool_type, &resource);
+	if (error < 0)
+		goto error;
+
+	mc_adev = resource->data;
+	if (!mc_adev)
+		goto error;
+
+	*new_mc_adev = mc_adev;
+	return 0;
+error:
+	if (resource)
+		fsl_mc_resource_free(resource);
+
+	return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_object_allocate);
+
+/**
+ * fsl_mc_object_free - Returns an fsl-mc object to the resource
+ * pool where it came from.
+ * @mc_adev: Pointer to the fsl-mc device
+ */
+void fsl_mc_object_free(struct fsl_mc_device *mc_adev)
+{
+	struct fsl_mc_resource *resource;
+
+	resource = mc_adev->resource;
+	if (resource->type == FSL_MC_POOL_DPMCP)
+		return;
+	if (resource->data != mc_adev)
+		return;
+
+	fsl_mc_resource_free(resource);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_object_free);
+
+/*
+ * A DPRC and the devices in the DPRC all share the same GIC-ITS device
+ * ID.  A block of IRQs is pre-allocated and maintained in a pool
+ * from which devices can allocate them when needed.
+ */
+
+/*
+ * Initialize the interrupt pool associated with an fsl-mc bus.
+ * It allocates a block of IRQs from the GIC-ITS.
+ */
+int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
+			     unsigned int irq_count)
+{
+	unsigned int i;
+	struct msi_desc *msi_desc;
+	struct fsl_mc_device_irq *irq_resources;
+	struct fsl_mc_device_irq *mc_dev_irq;
+	int error;
+	struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
+	struct fsl_mc_resource_pool *res_pool =
+			&mc_bus->resource_pools[FSL_MC_POOL_IRQ];
+
+	if (irq_count == 0 ||
+	    irq_count > FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS)
+		return -EINVAL;
+
+	error = fsl_mc_msi_domain_alloc_irqs(&mc_bus_dev->dev, irq_count);
+	if (error < 0)
+		return error;
+
+	irq_resources = devm_kzalloc(&mc_bus_dev->dev,
+				     sizeof(*irq_resources) * irq_count,
+				     GFP_KERNEL);
+	if (!irq_resources) {
+		error = -ENOMEM;
+		goto cleanup_msi_irqs;
+	}
+
+	for (i = 0; i < irq_count; i++) {
+		mc_dev_irq = &irq_resources[i];
+
+		/*
+		 * NOTE: This mc_dev_irq's MSI addr/value pair will be set
+		 * by the fsl_mc_msi_write_msg() callback
+		 */
+		mc_dev_irq->resource.type = res_pool->type;
+		mc_dev_irq->resource.data = mc_dev_irq;
+		mc_dev_irq->resource.parent_pool = res_pool;
+		INIT_LIST_HEAD(&mc_dev_irq->resource.node);
+		list_add_tail(&mc_dev_irq->resource.node, &res_pool->free_list);
+	}
+
+	for_each_msi_entry(msi_desc, &mc_bus_dev->dev) {
+		mc_dev_irq = &irq_resources[msi_desc->fsl_mc.msi_index];
+		mc_dev_irq->msi_desc = msi_desc;
+		mc_dev_irq->resource.id = msi_desc->irq;
+	}
+
+	res_pool->max_count = irq_count;
+	res_pool->free_count = irq_count;
+	mc_bus->irq_resources = irq_resources;
+	return 0;
+
+cleanup_msi_irqs:
+	fsl_mc_msi_domain_free_irqs(&mc_bus_dev->dev);
+	return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_populate_irq_pool);
+
+/**
+ * Teardown the interrupt pool associated with an fsl-mc bus.
+ * It frees the IRQs that were allocated to the pool, back to the GIC-ITS.
+ */
+void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus)
+{
+	struct fsl_mc_device *mc_bus_dev = &mc_bus->mc_dev;
+	struct fsl_mc_resource_pool *res_pool =
+			&mc_bus->resource_pools[FSL_MC_POOL_IRQ];
+
+	if (!mc_bus->irq_resources)
+		return;
+
+	if (res_pool->max_count == 0)
+		return;
+
+	if (res_pool->free_count != res_pool->max_count)
+		return;
+
+	INIT_LIST_HEAD(&res_pool->free_list);
+	res_pool->max_count = 0;
+	res_pool->free_count = 0;
+	mc_bus->irq_resources = NULL;
+	fsl_mc_msi_domain_free_irqs(&mc_bus_dev->dev);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_cleanup_irq_pool);
+
+/**
+ * Allocate the IRQs required by a given fsl-mc device.
+ */
+int __must_check fsl_mc_allocate_irqs(struct fsl_mc_device *mc_dev)
+{
+	int i;
+	int irq_count;
+	int res_allocated_count = 0;
+	int error = -EINVAL;
+	struct fsl_mc_device_irq **irqs = NULL;
+	struct fsl_mc_bus *mc_bus;
+	struct fsl_mc_resource_pool *res_pool;
+
+	if (mc_dev->irqs)
+		return -EINVAL;
+
+	irq_count = mc_dev->obj_desc.irq_count;
+	if (irq_count == 0)
+		return -EINVAL;
+
+	if (is_fsl_mc_bus_dprc(mc_dev))
+		mc_bus = to_fsl_mc_bus(mc_dev);
+	else
+		mc_bus = to_fsl_mc_bus(to_fsl_mc_device(mc_dev->dev.parent));
+
+	if (!mc_bus->irq_resources)
+		return -EINVAL;
+
+	res_pool = &mc_bus->resource_pools[FSL_MC_POOL_IRQ];
+	if (res_pool->free_count < irq_count) {
+		dev_err(&mc_dev->dev,
+			"Not able to allocate %u irqs for device\n", irq_count);
+		return -ENOSPC;
+	}
+
+	irqs = devm_kzalloc(&mc_dev->dev, irq_count * sizeof(irqs[0]),
+			    GFP_KERNEL);
+	if (!irqs)
+		return -ENOMEM;
+
+	for (i = 0; i < irq_count; i++) {
+		struct fsl_mc_resource *resource;
+
+		error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_IRQ,
+						 &resource);
+		if (error < 0)
+			goto error_resource_alloc;
+
+		irqs[i] = to_fsl_mc_irq(resource);
+		res_allocated_count++;
+
+		irqs[i]->mc_dev = mc_dev;
+		irqs[i]->dev_irq_index = i;
+	}
+
+	mc_dev->irqs = irqs;
+	return 0;
+
+error_resource_alloc:
+	for (i = 0; i < res_allocated_count; i++) {
+		irqs[i]->mc_dev = NULL;
+		fsl_mc_resource_free(&irqs[i]->resource);
+	}
+
+	return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_allocate_irqs);
+
+/*
+ * Frees the IRQs that were allocated for an fsl-mc device.
+ */
+void fsl_mc_free_irqs(struct fsl_mc_device *mc_dev)
+{
+	int i;
+	int irq_count;
+	struct fsl_mc_bus *mc_bus;
+	struct fsl_mc_device_irq **irqs = mc_dev->irqs;
+
+	if (!irqs)
+		return;
+
+	irq_count = mc_dev->obj_desc.irq_count;
+
+	if (is_fsl_mc_bus_dprc(mc_dev))
+		mc_bus = to_fsl_mc_bus(mc_dev);
+	else
+		mc_bus = to_fsl_mc_bus(to_fsl_mc_device(mc_dev->dev.parent));
+
+	if (!mc_bus->irq_resources)
+		return;
+
+	for (i = 0; i < irq_count; i++) {
+		irqs[i]->mc_dev = NULL;
+		fsl_mc_resource_free(&irqs[i]->resource);
+	}
+
+	mc_dev->irqs = NULL;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_free_irqs);
+
+void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
+{
+	int pool_type;
+	struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
+
+	for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++) {
+		struct fsl_mc_resource_pool *res_pool =
+		    &mc_bus->resource_pools[pool_type];
+
+		res_pool->type = pool_type;
+		res_pool->max_count = 0;
+		res_pool->free_count = 0;
+		res_pool->mc_bus = mc_bus;
+		INIT_LIST_HEAD(&res_pool->free_list);
+		mutex_init(&res_pool->mutex);
+	}
+}
+
+static void fsl_mc_cleanup_resource_pool(struct fsl_mc_device *mc_bus_dev,
+					 enum fsl_mc_pool_type pool_type)
+{
+	struct fsl_mc_resource *resource;
+	struct fsl_mc_resource *next;
+	struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
+	struct fsl_mc_resource_pool *res_pool =
+					&mc_bus->resource_pools[pool_type];
+	int free_count = 0;
+
+	list_for_each_entry_safe(resource, next, &res_pool->free_list, node) {
+		free_count++;
+		devm_kfree(&mc_bus_dev->dev, resource);
+	}
+}
+
+void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev)
+{
+	int pool_type;
+
+	for (pool_type = 0; pool_type < FSL_MC_NUM_POOL_TYPES; pool_type++)
+		fsl_mc_cleanup_resource_pool(mc_bus_dev, pool_type);
+}
+
+/**
+ * fsl_mc_allocator_probe - callback invoked when an allocatable device is
+ * being added to the system
+ */
+static int fsl_mc_allocator_probe(struct fsl_mc_device *mc_dev)
+{
+	enum fsl_mc_pool_type pool_type;
+	struct fsl_mc_device *mc_bus_dev;
+	struct fsl_mc_bus *mc_bus;
+	int error;
+
+	if (!fsl_mc_is_allocatable(mc_dev))
+		return -EINVAL;
+
+	mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
+	if (!dev_is_fsl_mc(&mc_bus_dev->dev))
+		return -EINVAL;
+
+	mc_bus = to_fsl_mc_bus(mc_bus_dev);
+	error = object_type_to_pool_type(mc_dev->obj_desc.type, &pool_type);
+	if (error < 0)
+		return error;
+
+	error = fsl_mc_resource_pool_add_device(mc_bus, pool_type, mc_dev);
+	if (error < 0)
+		return error;
+
+	dev_dbg(&mc_dev->dev,
+		"Allocatable fsl-mc device bound to fsl_mc_allocator driver");
+	return 0;
+}
+
+/**
+ * fsl_mc_allocator_remove - callback invoked when an allocatable device is
+ * being removed from the system
+ */
+static int fsl_mc_allocator_remove(struct fsl_mc_device *mc_dev)
+{
+	int error;
+
+	if (!fsl_mc_is_allocatable(mc_dev))
+		return -EINVAL;
+
+	if (mc_dev->resource) {
+		error = fsl_mc_resource_pool_remove_device(mc_dev);
+		if (error < 0)
+			return error;
+	}
+
+	dev_dbg(&mc_dev->dev,
+		"Allocatable fsl-mc device unbound from fsl_mc_allocator driver");
+	return 0;
+}
+
+static const struct fsl_mc_device_id match_id_table[] = {
+	{
+	 .vendor = FSL_MC_VENDOR_FREESCALE,
+	 .obj_type = "dpbp",
+	},
+	{
+	 .vendor = FSL_MC_VENDOR_FREESCALE,
+	 .obj_type = "dpmcp",
+	},
+	{
+	 .vendor = FSL_MC_VENDOR_FREESCALE,
+	 .obj_type = "dpcon",
+	},
+	{.vendor = 0x0},
+};
+
+static struct fsl_mc_driver fsl_mc_allocator_driver = {
+	.driver = {
+		   .name = "fsl_mc_allocator",
+		   .pm = NULL,
+		   },
+	.match_id_table = match_id_table,
+	.probe = fsl_mc_allocator_probe,
+	.remove = fsl_mc_allocator_remove,
+};
+
+int __init fsl_mc_allocator_driver_init(void)
+{
+	return fsl_mc_driver_register(&fsl_mc_allocator_driver);
+}
+
+void fsl_mc_allocator_driver_exit(void)
+{
+	fsl_mc_driver_unregister(&fsl_mc_allocator_driver);
+}
diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c
new file mode 100644
index 000000000000..5d8266c6571f
--- /dev/null
+++ b/drivers/bus/fsl-mc/fsl-mc-bus.c
@@ -0,0 +1,948 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Freescale Management Complex (MC) bus driver
+ *
+ * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
+ * Author: German Rivera <German.Rivera@freescale.com>
+ *
+ */
+
+#define pr_fmt(fmt) "fsl-mc: " fmt
+
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/limits.h>
+#include <linux/bitops.h>
+#include <linux/msi.h>
+#include <linux/dma-mapping.h>
+
+#include "fsl-mc-private.h"
+
+/**
+ * Default DMA mask for devices on a fsl-mc bus
+ */
+#define FSL_MC_DEFAULT_DMA_MASK	(~0ULL)
+
+/**
+ * struct fsl_mc - Private data of a "fsl,qoriq-mc" platform device
+ * @root_mc_bus_dev: fsl-mc device representing the root DPRC
+ * @num_translation_ranges: number of entries in addr_translation_ranges
+ * @translation_ranges: array of bus to system address translation ranges
+ */
+struct fsl_mc {
+	struct fsl_mc_device *root_mc_bus_dev;
+	u8 num_translation_ranges;
+	struct fsl_mc_addr_translation_range *translation_ranges;
+};
+
+/**
+ * struct fsl_mc_addr_translation_range - bus to system address translation
+ * range
+ * @mc_region_type: Type of MC region for the range being translated
+ * @start_mc_offset: Start MC offset of the range being translated
+ * @end_mc_offset: MC offset of the first byte after the range (last MC
+ * offset of the range is end_mc_offset - 1)
+ * @start_phys_addr: system physical address corresponding to start_mc_addr
+ */
+struct fsl_mc_addr_translation_range {
+	enum dprc_region_type mc_region_type;
+	u64 start_mc_offset;
+	u64 end_mc_offset;
+	phys_addr_t start_phys_addr;
+};
+
+/**
+ * struct mc_version
+ * @major: Major version number: incremented on API compatibility changes
+ * @minor: Minor version number: incremented on API additions (that are
+ *		backward compatible); reset when major version is incremented
+ * @revision: Internal revision number: incremented on implementation changes
+ *		and/or bug fixes that have no impact on API
+ */
+struct mc_version {
+	u32 major;
+	u32 minor;
+	u32 revision;
+};
+
+/**
+ * fsl_mc_bus_match - device to driver matching callback
+ * @dev: the fsl-mc device to match against
+ * @drv: the device driver to search for matching fsl-mc object type
+ * structures
+ *
+ * Returns 1 on success, 0 otherwise.
+ */
+static int fsl_mc_bus_match(struct device *dev, struct device_driver *drv)
+{
+	const struct fsl_mc_device_id *id;
+	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+	struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(drv);
+	bool found = false;
+
+	if (!mc_drv->match_id_table)
+		goto out;
+
+	/*
+	 * If the object is not 'plugged' don't match.
+	 * Only exception is the root DPRC, which is a special case.
+	 */
+	if ((mc_dev->obj_desc.state & FSL_MC_OBJ_STATE_PLUGGED) == 0 &&
+	    !fsl_mc_is_root_dprc(&mc_dev->dev))
+		goto out;
+
+	/*
+	 * Traverse the match_id table of the given driver, trying to find
+	 * a matching for the given device.
+	 */
+	for (id = mc_drv->match_id_table; id->vendor != 0x0; id++) {
+		if (id->vendor == mc_dev->obj_desc.vendor &&
+		    strcmp(id->obj_type, mc_dev->obj_desc.type) == 0) {
+			found = true;
+
+			break;
+		}
+	}
+
+out:
+	dev_dbg(dev, "%smatched\n", found ? "" : "not ");
+	return found;
+}
+
+/**
+ * fsl_mc_bus_uevent - callback invoked when a device is added
+ */
+static int fsl_mc_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+
+	if (add_uevent_var(env, "MODALIAS=fsl-mc:v%08Xd%s",
+			   mc_dev->obj_desc.vendor,
+			   mc_dev->obj_desc.type))
+		return -ENOMEM;
+
+	return 0;
+}
+
+static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
+			     char *buf)
+{
+	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+
+	return sprintf(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor,
+		       mc_dev->obj_desc.type);
+}
+static DEVICE_ATTR_RO(modalias);
+
+static struct attribute *fsl_mc_dev_attrs[] = {
+	&dev_attr_modalias.attr,
+	NULL,
+};
+
+ATTRIBUTE_GROUPS(fsl_mc_dev);
+
+struct bus_type fsl_mc_bus_type = {
+	.name = "fsl-mc",
+	.match = fsl_mc_bus_match,
+	.uevent = fsl_mc_bus_uevent,
+	.dev_groups = fsl_mc_dev_groups,
+};
+EXPORT_SYMBOL_GPL(fsl_mc_bus_type);
+
+struct device_type fsl_mc_bus_dprc_type = {
+	.name = "fsl_mc_bus_dprc"
+};
+
+struct device_type fsl_mc_bus_dpni_type = {
+	.name = "fsl_mc_bus_dpni"
+};
+
+struct device_type fsl_mc_bus_dpio_type = {
+	.name = "fsl_mc_bus_dpio"
+};
+
+struct device_type fsl_mc_bus_dpsw_type = {
+	.name = "fsl_mc_bus_dpsw"
+};
+
+struct device_type fsl_mc_bus_dpbp_type = {
+	.name = "fsl_mc_bus_dpbp"
+};
+
+struct device_type fsl_mc_bus_dpcon_type = {
+	.name = "fsl_mc_bus_dpcon"
+};
+
+struct device_type fsl_mc_bus_dpmcp_type = {
+	.name = "fsl_mc_bus_dpmcp"
+};
+
+struct device_type fsl_mc_bus_dpmac_type = {
+	.name = "fsl_mc_bus_dpmac"
+};
+
+struct device_type fsl_mc_bus_dprtc_type = {
+	.name = "fsl_mc_bus_dprtc"
+};
+
+static struct device_type *fsl_mc_get_device_type(const char *type)
+{
+	static const struct {
+		struct device_type *dev_type;
+		const char *type;
+	} dev_types[] = {
+		{ &fsl_mc_bus_dprc_type, "dprc" },
+		{ &fsl_mc_bus_dpni_type, "dpni" },
+		{ &fsl_mc_bus_dpio_type, "dpio" },
+		{ &fsl_mc_bus_dpsw_type, "dpsw" },
+		{ &fsl_mc_bus_dpbp_type, "dpbp" },
+		{ &fsl_mc_bus_dpcon_type, "dpcon" },
+		{ &fsl_mc_bus_dpmcp_type, "dpmcp" },
+		{ &fsl_mc_bus_dpmac_type, "dpmac" },
+		{ &fsl_mc_bus_dprtc_type, "dprtc" },
+		{ NULL, NULL }
+	};
+	int i;
+
+	for (i = 0; dev_types[i].dev_type; i++)
+		if (!strcmp(dev_types[i].type, type))
+			return dev_types[i].dev_type;
+
+	return NULL;
+}
+
+static int fsl_mc_driver_probe(struct device *dev)
+{
+	struct fsl_mc_driver *mc_drv;
+	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+	int error;
+
+	mc_drv = to_fsl_mc_driver(dev->driver);
+
+	error = mc_drv->probe(mc_dev);
+	if (error < 0) {
+		if (error != -EPROBE_DEFER)
+			dev_err(dev, "%s failed: %d\n", __func__, error);
+		return error;
+	}
+
+	return 0;
+}
+
+static int fsl_mc_driver_remove(struct device *dev)
+{
+	struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
+	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+	int error;
+
+	error = mc_drv->remove(mc_dev);
+	if (error < 0) {
+		dev_err(dev, "%s failed: %d\n", __func__, error);
+		return error;
+	}
+
+	return 0;
+}
+
+static void fsl_mc_driver_shutdown(struct device *dev)
+{
+	struct fsl_mc_driver *mc_drv = to_fsl_mc_driver(dev->driver);
+	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+
+	mc_drv->shutdown(mc_dev);
+}
+
+/**
+ * __fsl_mc_driver_register - registers a child device driver with the
+ * MC bus
+ *
+ * This function is implicitly invoked from the registration function of
+ * fsl_mc device drivers, which is generated by the
+ * module_fsl_mc_driver() macro.
+ */
+int __fsl_mc_driver_register(struct fsl_mc_driver *mc_driver,
+			     struct module *owner)
+{
+	int error;
+
+	mc_driver->driver.owner = owner;
+	mc_driver->driver.bus = &fsl_mc_bus_type;
+
+	if (mc_driver->probe)
+		mc_driver->driver.probe = fsl_mc_driver_probe;
+
+	if (mc_driver->remove)
+		mc_driver->driver.remove = fsl_mc_driver_remove;
+
+	if (mc_driver->shutdown)
+		mc_driver->driver.shutdown = fsl_mc_driver_shutdown;
+
+	error = driver_register(&mc_driver->driver);
+	if (error < 0) {
+		pr_err("driver_register() failed for %s: %d\n",
+		       mc_driver->driver.name, error);
+		return error;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(__fsl_mc_driver_register);
+
+/**
+ * fsl_mc_driver_unregister - unregisters a device driver from the
+ * MC bus
+ */
+void fsl_mc_driver_unregister(struct fsl_mc_driver *mc_driver)
+{
+	driver_unregister(&mc_driver->driver);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_driver_unregister);
+
+/**
+ * mc_get_version() - Retrieves the Management Complex firmware
+ *			version information
+ * @mc_io:		Pointer to opaque I/O object
+ * @cmd_flags:		Command flags; one or more of 'MC_CMD_FLAG_'
+ * @mc_ver_info:	Returned version information structure
+ *
+ * Return:	'0' on Success; Error code otherwise.
+ */
+static int mc_get_version(struct fsl_mc_io *mc_io,
+			  u32 cmd_flags,
+			  struct mc_version *mc_ver_info)
+{
+	struct fsl_mc_command cmd = { 0 };
+	struct dpmng_rsp_get_version *rsp_params;
+	int err;
+
+	/* prepare command */
+	cmd.header = mc_encode_cmd_header(DPMNG_CMDID_GET_VERSION,
+					  cmd_flags,
+					  0);
+
+	/* send command to mc*/
+	err = mc_send_command(mc_io, &cmd);
+	if (err)
+		return err;
+
+	/* retrieve response parameters */
+	rsp_params = (struct dpmng_rsp_get_version *)cmd.params;
+	mc_ver_info->revision = le32_to_cpu(rsp_params->revision);
+	mc_ver_info->major = le32_to_cpu(rsp_params->version_major);
+	mc_ver_info->minor = le32_to_cpu(rsp_params->version_minor);
+
+	return 0;
+}
+
+/**
+ * fsl_mc_get_root_dprc - function to traverse to the root dprc
+ */
+static void fsl_mc_get_root_dprc(struct device *dev,
+				 struct device **root_dprc_dev)
+{
+	if (!dev) {
+		*root_dprc_dev = NULL;
+	} else if (!dev_is_fsl_mc(dev)) {
+		*root_dprc_dev = NULL;
+	} else {
+		*root_dprc_dev = dev;
+		while (dev_is_fsl_mc((*root_dprc_dev)->parent))
+			*root_dprc_dev = (*root_dprc_dev)->parent;
+	}
+}
+
+static int get_dprc_attr(struct fsl_mc_io *mc_io,
+			 int container_id, struct dprc_attributes *attr)
+{
+	u16 dprc_handle;
+	int error;
+
+	error = dprc_open(mc_io, 0, container_id, &dprc_handle);
+	if (error < 0) {
+		dev_err(mc_io->dev, "dprc_open() failed: %d\n", error);
+		return error;
+	}
+
+	memset(attr, 0, sizeof(struct dprc_attributes));
+	error = dprc_get_attributes(mc_io, 0, dprc_handle, attr);
+	if (error < 0) {
+		dev_err(mc_io->dev, "dprc_get_attributes() failed: %d\n",
+			error);
+		goto common_cleanup;
+	}
+
+	error = 0;
+
+common_cleanup:
+	(void)dprc_close(mc_io, 0, dprc_handle);
+	return error;
+}
+
+static int get_dprc_icid(struct fsl_mc_io *mc_io,
+			 int container_id, u16 *icid)
+{
+	struct dprc_attributes attr;
+	int error;
+
+	error = get_dprc_attr(mc_io, container_id, &attr);
+	if (error == 0)
+		*icid = attr.icid;
+
+	return error;
+}
+
+static int translate_mc_addr(struct fsl_mc_device *mc_dev,
+			     enum dprc_region_type mc_region_type,
+			     u64 mc_offset, phys_addr_t *phys_addr)
+{
+	int i;
+	struct device *root_dprc_dev;
+	struct fsl_mc *mc;
+
+	fsl_mc_get_root_dprc(&mc_dev->dev, &root_dprc_dev);
+	mc = dev_get_drvdata(root_dprc_dev->parent);
+
+	if (mc->num_translation_ranges == 0) {
+		/*
+		 * Do identity mapping:
+		 */
+		*phys_addr = mc_offset;
+		return 0;
+	}
+
+	for (i = 0; i < mc->num_translation_ranges; i++) {
+		struct fsl_mc_addr_translation_range *range =
+			&mc->translation_ranges[i];
+
+		if (mc_region_type == range->mc_region_type &&
+		    mc_offset >= range->start_mc_offset &&
+		    mc_offset < range->end_mc_offset) {
+			*phys_addr = range->start_phys_addr +
+				     (mc_offset - range->start_mc_offset);
+			return 0;
+		}
+	}
+
+	return -EFAULT;
+}
+
+static int fsl_mc_device_get_mmio_regions(struct fsl_mc_device *mc_dev,
+					  struct fsl_mc_device *mc_bus_dev)
+{
+	int i;
+	int error;
+	struct resource *regions;
+	struct fsl_mc_obj_desc *obj_desc = &mc_dev->obj_desc;
+	struct device *parent_dev = mc_dev->dev.parent;
+	enum dprc_region_type mc_region_type;
+
+	if (is_fsl_mc_bus_dprc(mc_dev) ||
+	    is_fsl_mc_bus_dpmcp(mc_dev)) {
+		mc_region_type = DPRC_REGION_TYPE_MC_PORTAL;
+	} else if (is_fsl_mc_bus_dpio(mc_dev)) {
+		mc_region_type = DPRC_REGION_TYPE_QBMAN_PORTAL;
+	} else {
+		/*
+		 * This function should not have been called for this MC object
+		 * type, as this object type is not supposed to have MMIO
+		 * regions
+		 */
+		return -EINVAL;
+	}
+
+	regions = kmalloc_array(obj_desc->region_count,
+				sizeof(regions[0]), GFP_KERNEL);
+	if (!regions)
+		return -ENOMEM;
+
+	for (i = 0; i < obj_desc->region_count; i++) {
+		struct dprc_region_desc region_desc;
+
+		error = dprc_get_obj_region(mc_bus_dev->mc_io,
+					    0,
+					    mc_bus_dev->mc_handle,
+					    obj_desc->type,
+					    obj_desc->id, i, &region_desc);
+		if (error < 0) {
+			dev_err(parent_dev,
+				"dprc_get_obj_region() failed: %d\n", error);
+			goto error_cleanup_regions;
+		}
+
+		error = translate_mc_addr(mc_dev, mc_region_type,
+					  region_desc.base_offset,
+					  &regions[i].start);
+		if (error < 0) {
+			dev_err(parent_dev,
+				"Invalid MC offset: %#x (for %s.%d\'s region %d)\n",
+				region_desc.base_offset,
+				obj_desc->type, obj_desc->id, i);
+			goto error_cleanup_regions;
+		}
+
+		regions[i].end = regions[i].start + region_desc.size - 1;
+		regions[i].name = "fsl-mc object MMIO region";
+		regions[i].flags = IORESOURCE_IO;
+		if (region_desc.flags & DPRC_REGION_CACHEABLE)
+			regions[i].flags |= IORESOURCE_CACHEABLE;
+	}
+
+	mc_dev->regions = regions;
+	return 0;
+
+error_cleanup_regions:
+	kfree(regions);
+	return error;
+}
+
+/**
+ * fsl_mc_is_root_dprc - function to check if a given device is a root dprc
+ */
+bool fsl_mc_is_root_dprc(struct device *dev)
+{
+	struct device *root_dprc_dev;
+
+	fsl_mc_get_root_dprc(dev, &root_dprc_dev);
+	if (!root_dprc_dev)
+		return false;
+	return dev == root_dprc_dev;
+}
+
+static void fsl_mc_device_release(struct device *dev)
+{
+	struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev);
+
+	kfree(mc_dev->regions);
+
+	if (is_fsl_mc_bus_dprc(mc_dev))
+		kfree(to_fsl_mc_bus(mc_dev));
+	else
+		kfree(mc_dev);
+}
+
+/**
+ * Add a newly discovered fsl-mc device to be visible in Linux
+ */
+int fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
+		      struct fsl_mc_io *mc_io,
+		      struct device *parent_dev,
+		      struct fsl_mc_device **new_mc_dev)
+{
+	int error;
+	struct fsl_mc_device *mc_dev = NULL;
+	struct fsl_mc_bus *mc_bus = NULL;
+	struct fsl_mc_device *parent_mc_dev;
+
+	if (dev_is_fsl_mc(parent_dev))
+		parent_mc_dev = to_fsl_mc_device(parent_dev);
+	else
+		parent_mc_dev = NULL;
+
+	if (strcmp(obj_desc->type, "dprc") == 0) {
+		/*
+		 * Allocate an MC bus device object:
+		 */
+		mc_bus = kzalloc(sizeof(*mc_bus), GFP_KERNEL);
+		if (!mc_bus)
+			return -ENOMEM;
+
+		mc_dev = &mc_bus->mc_dev;
+	} else {
+		/*
+		 * Allocate a regular fsl_mc_device object:
+		 */
+		mc_dev = kzalloc(sizeof(*mc_dev), GFP_KERNEL);
+		if (!mc_dev)
+			return -ENOMEM;
+	}
+
+	mc_dev->obj_desc = *obj_desc;
+	mc_dev->mc_io = mc_io;
+	device_initialize(&mc_dev->dev);
+	mc_dev->dev.parent = parent_dev;
+	mc_dev->dev.bus = &fsl_mc_bus_type;
+	mc_dev->dev.release = fsl_mc_device_release;
+	mc_dev->dev.type = fsl_mc_get_device_type(obj_desc->type);
+	if (!mc_dev->dev.type) {
+		error = -ENODEV;
+		dev_err(parent_dev, "unknown device type %s\n", obj_desc->type);
+		goto error_cleanup_dev;
+	}
+	dev_set_name(&mc_dev->dev, "%s.%d", obj_desc->type, obj_desc->id);
+
+	if (strcmp(obj_desc->type, "dprc") == 0) {
+		struct fsl_mc_io *mc_io2;
+
+		mc_dev->flags |= FSL_MC_IS_DPRC;
+
+		/*
+		 * To get the DPRC's ICID, we need to open the DPRC
+		 * in get_dprc_icid(). For child DPRCs, we do so using the
+		 * parent DPRC's MC portal instead of the child DPRC's MC
+		 * portal, in case the child DPRC is already opened with
+		 * its own portal (e.g., the DPRC used by AIOP).
+		 *
+		 * NOTE: There cannot be more than one active open for a
+		 * given MC object, using the same MC portal.
+		 */
+		if (parent_mc_dev) {
+			/*
+			 * device being added is a child DPRC device
+			 */
+			mc_io2 = parent_mc_dev->mc_io;
+		} else {
+			/*
+			 * device being added is the root DPRC device
+			 */
+			if (!mc_io) {
+				error = -EINVAL;
+				goto error_cleanup_dev;
+			}
+
+			mc_io2 = mc_io;
+		}
+
+		error = get_dprc_icid(mc_io2, obj_desc->id, &mc_dev->icid);
+		if (error < 0)
+			goto error_cleanup_dev;
+	} else {
+		/*
+		 * A non-DPRC object has to be a child of a DPRC, use the
+		 * parent's ICID and interrupt domain.
+		 */
+		mc_dev->icid = parent_mc_dev->icid;
+		mc_dev->dma_mask = FSL_MC_DEFAULT_DMA_MASK;
+		mc_dev->dev.dma_mask = &mc_dev->dma_mask;
+		dev_set_msi_domain(&mc_dev->dev,
+				   dev_get_msi_domain(&parent_mc_dev->dev));
+	}
+
+	/*
+	 * Get MMIO regions for the device from the MC:
+	 *
+	 * NOTE: the root DPRC is a special case as its MMIO region is
+	 * obtained from the device tree
+	 */
+	if (parent_mc_dev && obj_desc->region_count != 0) {
+		error = fsl_mc_device_get_mmio_regions(mc_dev,
+						       parent_mc_dev);
+		if (error < 0)
+			goto error_cleanup_dev;
+	}
+
+	/* Objects are coherent, unless 'no shareability' flag set. */
+	if (!(obj_desc->flags & FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY))
+		arch_setup_dma_ops(&mc_dev->dev, 0, 0, NULL, true);
+
+	/*
+	 * The device-specific probe callback will get invoked by device_add()
+	 */
+	error = device_add(&mc_dev->dev);
+	if (error < 0) {
+		dev_err(parent_dev,
+			"device_add() failed for device %s: %d\n",
+			dev_name(&mc_dev->dev), error);
+		goto error_cleanup_dev;
+	}
+
+	dev_dbg(parent_dev, "added %s\n", dev_name(&mc_dev->dev));
+
+	*new_mc_dev = mc_dev;
+	return 0;
+
+error_cleanup_dev:
+	kfree(mc_dev->regions);
+	kfree(mc_bus);
+	kfree(mc_dev);
+
+	return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_device_add);
+
+/**
+ * fsl_mc_device_remove - Remove an fsl-mc device from being visible to
+ * Linux
+ *
+ * @mc_dev: Pointer to an fsl-mc device
+ */
+void fsl_mc_device_remove(struct fsl_mc_device *mc_dev)
+{
+	/*
+	 * The device-specific remove callback will get invoked by device_del()
+	 */
+	device_del(&mc_dev->dev);
+	put_device(&mc_dev->dev);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_device_remove);
+
+static int parse_mc_ranges(struct device *dev,
+			   int *paddr_cells,
+			   int *mc_addr_cells,
+			   int *mc_size_cells,
+			   const __be32 **ranges_start)
+{
+	const __be32 *prop;
+	int range_tuple_cell_count;
+	int ranges_len;
+	int tuple_len;
+	struct device_node *mc_node = dev->of_node;
+
+	*ranges_start = of_get_property(mc_node, "ranges", &ranges_len);
+	if (!(*ranges_start) || !ranges_len) {
+		dev_warn(dev,
+			 "missing or empty ranges property for device tree node '%s'\n",
+			 mc_node->name);
+		return 0;
+	}
+
+	*paddr_cells = of_n_addr_cells(mc_node);
+
+	prop = of_get_property(mc_node, "#address-cells", NULL);
+	if (prop)
+		*mc_addr_cells = be32_to_cpup(prop);
+	else
+		*mc_addr_cells = *paddr_cells;
+
+	prop = of_get_property(mc_node, "#size-cells", NULL);
+	if (prop)
+		*mc_size_cells = be32_to_cpup(prop);
+	else
+		*mc_size_cells = of_n_size_cells(mc_node);
+
+	range_tuple_cell_count = *paddr_cells + *mc_addr_cells +
+				 *mc_size_cells;
+
+	tuple_len = range_tuple_cell_count * sizeof(__be32);
+	if (ranges_len % tuple_len != 0) {
+		dev_err(dev, "malformed ranges property '%s'\n", mc_node->name);
+		return -EINVAL;
+	}
+
+	return ranges_len / tuple_len;
+}
+
+static int get_mc_addr_translation_ranges(struct device *dev,
+					  struct fsl_mc_addr_translation_range
+						**ranges,
+					  u8 *num_ranges)
+{
+	int ret;
+	int paddr_cells;
+	int mc_addr_cells;
+	int mc_size_cells;
+	int i;
+	const __be32 *ranges_start;
+	const __be32 *cell;
+
+	ret = parse_mc_ranges(dev,
+			      &paddr_cells,
+			      &mc_addr_cells,
+			      &mc_size_cells,
+			      &ranges_start);
+	if (ret < 0)
+		return ret;
+
+	*num_ranges = ret;
+	if (!ret) {
+		/*
+		 * Missing or empty ranges property ("ranges;") for the
+		 * 'fsl,qoriq-mc' node. In this case, identity mapping
+		 * will be used.
+		 */
+		*ranges = NULL;
+		return 0;
+	}
+
+	*ranges = devm_kcalloc(dev, *num_ranges,
+			       sizeof(struct fsl_mc_addr_translation_range),
+			       GFP_KERNEL);
+	if (!(*ranges))
+		return -ENOMEM;
+
+	cell = ranges_start;
+	for (i = 0; i < *num_ranges; ++i) {
+		struct fsl_mc_addr_translation_range *range = &(*ranges)[i];
+
+		range->mc_region_type = of_read_number(cell, 1);
+		range->start_mc_offset = of_read_number(cell + 1,
+							mc_addr_cells - 1);
+		cell += mc_addr_cells;
+		range->start_phys_addr = of_read_number(cell, paddr_cells);
+		cell += paddr_cells;
+		range->end_mc_offset = range->start_mc_offset +
+				     of_read_number(cell, mc_size_cells);
+
+		cell += mc_size_cells;
+	}
+
+	return 0;
+}
+
+/**
+ * fsl_mc_bus_probe - callback invoked when the root MC bus is being
+ * added
+ */
+static int fsl_mc_bus_probe(struct platform_device *pdev)
+{
+	struct fsl_mc_obj_desc obj_desc;
+	int error;
+	struct fsl_mc *mc;
+	struct fsl_mc_device *mc_bus_dev = NULL;
+	struct fsl_mc_io *mc_io = NULL;
+	int container_id;
+	phys_addr_t mc_portal_phys_addr;
+	u32 mc_portal_size;
+	struct mc_version mc_version;
+	struct resource res;
+
+	mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL);
+	if (!mc)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, mc);
+
+	/*
+	 * Get physical address of MC portal for the root DPRC:
+	 */
+	error = of_address_to_resource(pdev->dev.of_node, 0, &res);
+	if (error < 0) {
+		dev_err(&pdev->dev,
+			"of_address_to_resource() failed for %pOF\n",
+			pdev->dev.of_node);
+		return error;
+	}
+
+	mc_portal_phys_addr = res.start;
+	mc_portal_size = resource_size(&res);
+	error = fsl_create_mc_io(&pdev->dev, mc_portal_phys_addr,
+				 mc_portal_size, NULL,
+				 FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, &mc_io);
+	if (error < 0)
+		return error;
+
+	error = mc_get_version(mc_io, 0, &mc_version);
+	if (error != 0) {
+		dev_err(&pdev->dev,
+			"mc_get_version() failed with error %d\n", error);
+		goto error_cleanup_mc_io;
+	}
+
+	dev_info(&pdev->dev, "MC firmware version: %u.%u.%u\n",
+		 mc_version.major, mc_version.minor, mc_version.revision);
+
+	error = get_mc_addr_translation_ranges(&pdev->dev,
+					       &mc->translation_ranges,
+					       &mc->num_translation_ranges);
+	if (error < 0)
+		goto error_cleanup_mc_io;
+
+	error = dprc_get_container_id(mc_io, 0, &container_id);
+	if (error < 0) {
+		dev_err(&pdev->dev,
+			"dprc_get_container_id() failed: %d\n", error);
+		goto error_cleanup_mc_io;
+	}
+
+	memset(&obj_desc, 0, sizeof(struct fsl_mc_obj_desc));
+	error = dprc_get_api_version(mc_io, 0,
+				     &obj_desc.ver_major,
+				     &obj_desc.ver_minor);
+	if (error < 0)
+		goto error_cleanup_mc_io;
+
+	obj_desc.vendor = FSL_MC_VENDOR_FREESCALE;
+	strcpy(obj_desc.type, "dprc");
+	obj_desc.id = container_id;
+	obj_desc.irq_count = 1;
+	obj_desc.region_count = 0;
+
+	error = fsl_mc_device_add(&obj_desc, mc_io, &pdev->dev, &mc_bus_dev);
+	if (error < 0)
+		goto error_cleanup_mc_io;
+
+	mc->root_mc_bus_dev = mc_bus_dev;
+	return 0;
+
+error_cleanup_mc_io:
+	fsl_destroy_mc_io(mc_io);
+	return error;
+}
+
+/**
+ * fsl_mc_bus_remove - callback invoked when the root MC bus is being
+ * removed
+ */
+static int fsl_mc_bus_remove(struct platform_device *pdev)
+{
+	struct fsl_mc *mc = platform_get_drvdata(pdev);
+
+	if (!fsl_mc_is_root_dprc(&mc->root_mc_bus_dev->dev))
+		return -EINVAL;
+
+	fsl_mc_device_remove(mc->root_mc_bus_dev);
+
+	fsl_destroy_mc_io(mc->root_mc_bus_dev->mc_io);
+	mc->root_mc_bus_dev->mc_io = NULL;
+
+	return 0;
+}
+
+static const struct of_device_id fsl_mc_bus_match_table[] = {
+	{.compatible = "fsl,qoriq-mc",},
+	{},
+};
+
+MODULE_DEVICE_TABLE(of, fsl_mc_bus_match_table);
+
+static struct platform_driver fsl_mc_bus_driver = {
+	.driver = {
+		   .name = "fsl_mc_bus",
+		   .pm = NULL,
+		   .of_match_table = fsl_mc_bus_match_table,
+		   },
+	.probe = fsl_mc_bus_probe,
+	.remove = fsl_mc_bus_remove,
+};
+
+static int __init fsl_mc_bus_driver_init(void)
+{
+	int error;
+
+	error = bus_register(&fsl_mc_bus_type);
+	if (error < 0) {
+		pr_err("bus type registration failed: %d\n", error);
+		goto error_cleanup_cache;
+	}
+
+	error = platform_driver_register(&fsl_mc_bus_driver);
+	if (error < 0) {
+		pr_err("platform_driver_register() failed: %d\n", error);
+		goto error_cleanup_bus;
+	}
+
+	error = dprc_driver_init();
+	if (error < 0)
+		goto error_cleanup_driver;
+
+	error = fsl_mc_allocator_driver_init();
+	if (error < 0)
+		goto error_cleanup_dprc_driver;
+
+	return 0;
+
+error_cleanup_dprc_driver:
+	dprc_driver_exit();
+
+error_cleanup_driver:
+	platform_driver_unregister(&fsl_mc_bus_driver);
+
+error_cleanup_bus:
+	bus_unregister(&fsl_mc_bus_type);
+
+error_cleanup_cache:
+	return error;
+}
+postcore_initcall(fsl_mc_bus_driver_init);
diff --git a/drivers/bus/fsl-mc/fsl-mc-msi.c b/drivers/bus/fsl-mc/fsl-mc-msi.c
new file mode 100644
index 000000000000..ec35e255b496
--- /dev/null
+++ b/drivers/bus/fsl-mc/fsl-mc-msi.c
@@ -0,0 +1,285 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Freescale Management Complex (MC) bus driver MSI support
+ *
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
+ * Author: German Rivera <German.Rivera@freescale.com>
+ *
+ */
+
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/msi.h>
+
+#include "fsl-mc-private.h"
+
+#ifdef GENERIC_MSI_DOMAIN_OPS
+/*
+ * Generate a unique ID identifying the interrupt (only used within the MSI
+ * irqdomain.  Combine the icid with the interrupt index.
+ */
+static irq_hw_number_t fsl_mc_domain_calc_hwirq(struct fsl_mc_device *dev,
+						struct msi_desc *desc)
+{
+	/*
+	 * Make the base hwirq value for ICID*10000 so it is readable
+	 * as a decimal value in /proc/interrupts.
+	 */
+	return (irq_hw_number_t)(desc->fsl_mc.msi_index + (dev->icid * 10000));
+}
+
+static void fsl_mc_msi_set_desc(msi_alloc_info_t *arg,
+				struct msi_desc *desc)
+{
+	arg->desc = desc;
+	arg->hwirq = fsl_mc_domain_calc_hwirq(to_fsl_mc_device(desc->dev),
+					      desc);
+}
+#else
+#define fsl_mc_msi_set_desc NULL
+#endif
+
+static void fsl_mc_msi_update_dom_ops(struct msi_domain_info *info)
+{
+	struct msi_domain_ops *ops = info->ops;
+
+	if (!ops)
+		return;
+
+	/*
+	 * set_desc should not be set by the caller
+	 */
+	if (!ops->set_desc)
+		ops->set_desc = fsl_mc_msi_set_desc;
+}
+
+static void __fsl_mc_msi_write_msg(struct fsl_mc_device *mc_bus_dev,
+				   struct fsl_mc_device_irq *mc_dev_irq)
+{
+	int error;
+	struct fsl_mc_device *owner_mc_dev = mc_dev_irq->mc_dev;
+	struct msi_desc *msi_desc = mc_dev_irq->msi_desc;
+	struct dprc_irq_cfg irq_cfg;
+
+	/*
+	 * msi_desc->msg.address is 0x0 when this function is invoked in
+	 * the free_irq() code path. In this case, for the MC, we don't
+	 * really need to "unprogram" the MSI, so we just return.
+	 */
+	if (msi_desc->msg.address_lo == 0x0 && msi_desc->msg.address_hi == 0x0)
+		return;
+
+	if (!owner_mc_dev)
+		return;
+
+	irq_cfg.paddr = ((u64)msi_desc->msg.address_hi << 32) |
+			msi_desc->msg.address_lo;
+	irq_cfg.val = msi_desc->msg.data;
+	irq_cfg.irq_num = msi_desc->irq;
+
+	if (owner_mc_dev == mc_bus_dev) {
+		/*
+		 * IRQ is for the mc_bus_dev's DPRC itself
+		 */
+		error = dprc_set_irq(mc_bus_dev->mc_io,
+				     MC_CMD_FLAG_INTR_DIS | MC_CMD_FLAG_PRI,
+				     mc_bus_dev->mc_handle,
+				     mc_dev_irq->dev_irq_index,
+				     &irq_cfg);
+		if (error < 0) {
+			dev_err(&owner_mc_dev->dev,
+				"dprc_set_irq() failed: %d\n", error);
+		}
+	} else {
+		/*
+		 * IRQ is for for a child device of mc_bus_dev
+		 */
+		error = dprc_set_obj_irq(mc_bus_dev->mc_io,
+					 MC_CMD_FLAG_INTR_DIS | MC_CMD_FLAG_PRI,
+					 mc_bus_dev->mc_handle,
+					 owner_mc_dev->obj_desc.type,
+					 owner_mc_dev->obj_desc.id,
+					 mc_dev_irq->dev_irq_index,
+					 &irq_cfg);
+		if (error < 0) {
+			dev_err(&owner_mc_dev->dev,
+				"dprc_obj_set_irq() failed: %d\n", error);
+		}
+	}
+}
+
+/*
+ * NOTE: This function is invoked with interrupts disabled
+ */
+static void fsl_mc_msi_write_msg(struct irq_data *irq_data,
+				 struct msi_msg *msg)
+{
+	struct msi_desc *msi_desc = irq_data_get_msi_desc(irq_data);
+	struct fsl_mc_device *mc_bus_dev = to_fsl_mc_device(msi_desc->dev);
+	struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
+	struct fsl_mc_device_irq *mc_dev_irq =
+		&mc_bus->irq_resources[msi_desc->fsl_mc.msi_index];
+
+	msi_desc->msg = *msg;
+
+	/*
+	 * Program the MSI (paddr, value) pair in the device:
+	 */
+	__fsl_mc_msi_write_msg(mc_bus_dev, mc_dev_irq);
+}
+
+static void fsl_mc_msi_update_chip_ops(struct msi_domain_info *info)
+{
+	struct irq_chip *chip = info->chip;
+
+	if (!chip)
+		return;
+
+	/*
+	 * irq_write_msi_msg should not be set by the caller
+	 */
+	if (!chip->irq_write_msi_msg)
+		chip->irq_write_msi_msg = fsl_mc_msi_write_msg;
+}
+
+/**
+ * fsl_mc_msi_create_irq_domain - Create a fsl-mc MSI interrupt domain
+ * @np:		Optional device-tree node of the interrupt controller
+ * @info:	MSI domain info
+ * @parent:	Parent irq domain
+ *
+ * Updates the domain and chip ops and creates a fsl-mc MSI
+ * interrupt domain.
+ *
+ * Returns:
+ * A domain pointer or NULL in case of failure.
+ */
+struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode,
+						struct msi_domain_info *info,
+						struct irq_domain *parent)
+{
+	struct irq_domain *domain;
+
+	if (info->flags & MSI_FLAG_USE_DEF_DOM_OPS)
+		fsl_mc_msi_update_dom_ops(info);
+	if (info->flags & MSI_FLAG_USE_DEF_CHIP_OPS)
+		fsl_mc_msi_update_chip_ops(info);
+
+	domain = msi_create_irq_domain(fwnode, info, parent);
+	if (domain)
+		irq_domain_update_bus_token(domain, DOMAIN_BUS_FSL_MC_MSI);
+
+	return domain;
+}
+
+int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
+			   struct irq_domain **mc_msi_domain)
+{
+	struct irq_domain *msi_domain;
+	struct device_node *mc_of_node = mc_platform_dev->of_node;
+
+	msi_domain = of_msi_get_domain(mc_platform_dev, mc_of_node,
+				       DOMAIN_BUS_FSL_MC_MSI);
+	if (!msi_domain) {
+		pr_err("Unable to find fsl-mc MSI domain for %pOF\n",
+		       mc_of_node);
+
+		return -ENOENT;
+	}
+
+	*mc_msi_domain = msi_domain;
+	return 0;
+}
+
+static void fsl_mc_msi_free_descs(struct device *dev)
+{
+	struct msi_desc *desc, *tmp;
+
+	list_for_each_entry_safe(desc, tmp, dev_to_msi_list(dev), list) {
+		list_del(&desc->list);
+		free_msi_entry(desc);
+	}
+}
+
+static int fsl_mc_msi_alloc_descs(struct device *dev, unsigned int irq_count)
+
+{
+	unsigned int i;
+	int error;
+	struct msi_desc *msi_desc;
+
+	for (i = 0; i < irq_count; i++) {
+		msi_desc = alloc_msi_entry(dev, 1, NULL);
+		if (!msi_desc) {
+			dev_err(dev, "Failed to allocate msi entry\n");
+			error = -ENOMEM;
+			goto cleanup_msi_descs;
+		}
+
+		msi_desc->fsl_mc.msi_index = i;
+		INIT_LIST_HEAD(&msi_desc->list);
+		list_add_tail(&msi_desc->list, dev_to_msi_list(dev));
+	}
+
+	return 0;
+
+cleanup_msi_descs:
+	fsl_mc_msi_free_descs(dev);
+	return error;
+}
+
+int fsl_mc_msi_domain_alloc_irqs(struct device *dev,
+				 unsigned int irq_count)
+{
+	struct irq_domain *msi_domain;
+	int error;
+
+	if (!list_empty(dev_to_msi_list(dev)))
+		return -EINVAL;
+
+	error = fsl_mc_msi_alloc_descs(dev, irq_count);
+	if (error < 0)
+		return error;
+
+	msi_domain = dev_get_msi_domain(dev);
+	if (!msi_domain) {
+		error = -EINVAL;
+		goto cleanup_msi_descs;
+	}
+
+	/*
+	 * NOTE: Calling this function will trigger the invocation of the
+	 * its_fsl_mc_msi_prepare() callback
+	 */
+	error = msi_domain_alloc_irqs(msi_domain, dev, irq_count);
+
+	if (error) {
+		dev_err(dev, "Failed to allocate IRQs\n");
+		goto cleanup_msi_descs;
+	}
+
+	return 0;
+
+cleanup_msi_descs:
+	fsl_mc_msi_free_descs(dev);
+	return error;
+}
+
+void fsl_mc_msi_domain_free_irqs(struct device *dev)
+{
+	struct irq_domain *msi_domain;
+
+	msi_domain = dev_get_msi_domain(dev);
+	if (!msi_domain)
+		return;
+
+	msi_domain_free_irqs(msi_domain, dev);
+
+	if (list_empty(dev_to_msi_list(dev)))
+		return;
+
+	fsl_mc_msi_free_descs(dev);
+}
diff --git a/drivers/bus/fsl-mc/fsl-mc-private.h b/drivers/bus/fsl-mc/fsl-mc-private.h
new file mode 100644
index 000000000000..ea11b4fe59f7
--- /dev/null
+++ b/drivers/bus/fsl-mc/fsl-mc-private.h
@@ -0,0 +1,564 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Freescale Management Complex (MC) bus private declarations
+ *
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ */
+#ifndef _FSL_MC_PRIVATE_H_
+#define _FSL_MC_PRIVATE_H_
+
+#include <linux/fsl/mc.h>
+#include <linux/mutex.h>
+
+/*
+ * Data Path Management Complex (DPMNG) General API
+ */
+
+/* DPMNG command versioning */
+#define DPMNG_CMD_BASE_VERSION		1
+#define DPMNG_CMD_ID_OFFSET		4
+
+#define DPMNG_CMD(id)	(((id) << DPMNG_CMD_ID_OFFSET) | DPMNG_CMD_BASE_VERSION)
+
+/* DPMNG command IDs */
+#define DPMNG_CMDID_GET_VERSION		DPMNG_CMD(0x831)
+
+struct dpmng_rsp_get_version {
+	__le32 revision;
+	__le32 version_major;
+	__le32 version_minor;
+};
+
+/*
+ * Data Path Management Command Portal (DPMCP) API
+ */
+
+/* Minimal supported DPMCP Version */
+#define DPMCP_MIN_VER_MAJOR		3
+#define DPMCP_MIN_VER_MINOR		0
+
+/* DPMCP command versioning */
+#define DPMCP_CMD_BASE_VERSION		1
+#define DPMCP_CMD_ID_OFFSET		4
+
+#define DPMCP_CMD(id)	(((id) << DPMCP_CMD_ID_OFFSET) | DPMCP_CMD_BASE_VERSION)
+
+/* DPMCP command IDs */
+#define DPMCP_CMDID_CLOSE		DPMCP_CMD(0x800)
+#define DPMCP_CMDID_OPEN		DPMCP_CMD(0x80b)
+#define DPMCP_CMDID_RESET		DPMCP_CMD(0x005)
+
+struct dpmcp_cmd_open {
+	__le32 dpmcp_id;
+};
+
+/*
+ * Initialization and runtime control APIs for DPMCP
+ */
+int dpmcp_open(struct fsl_mc_io *mc_io,
+	       u32 cmd_flags,
+	       int dpmcp_id,
+	       u16 *token);
+
+int dpmcp_close(struct fsl_mc_io *mc_io,
+		u32 cmd_flags,
+		u16 token);
+
+int dpmcp_reset(struct fsl_mc_io *mc_io,
+		u32 cmd_flags,
+		u16 token);
+
+/*
+ * Data Path Resource Container (DPRC) API
+ */
+
+/* Minimal supported DPRC Version */
+#define DPRC_MIN_VER_MAJOR			6
+#define DPRC_MIN_VER_MINOR			0
+
+/* DPRC command versioning */
+#define DPRC_CMD_BASE_VERSION			1
+#define DPRC_CMD_ID_OFFSET			4
+
+#define DPRC_CMD(id)	(((id) << DPRC_CMD_ID_OFFSET) | DPRC_CMD_BASE_VERSION)
+
+/* DPRC command IDs */
+#define DPRC_CMDID_CLOSE                        DPRC_CMD(0x800)
+#define DPRC_CMDID_OPEN                         DPRC_CMD(0x805)
+#define DPRC_CMDID_GET_API_VERSION              DPRC_CMD(0xa05)
+
+#define DPRC_CMDID_GET_ATTR                     DPRC_CMD(0x004)
+
+#define DPRC_CMDID_SET_IRQ                      DPRC_CMD(0x010)
+#define DPRC_CMDID_SET_IRQ_ENABLE               DPRC_CMD(0x012)
+#define DPRC_CMDID_SET_IRQ_MASK                 DPRC_CMD(0x014)
+#define DPRC_CMDID_GET_IRQ_STATUS               DPRC_CMD(0x016)
+#define DPRC_CMDID_CLEAR_IRQ_STATUS             DPRC_CMD(0x017)
+
+#define DPRC_CMDID_GET_CONT_ID                  DPRC_CMD(0x830)
+#define DPRC_CMDID_GET_OBJ_COUNT                DPRC_CMD(0x159)
+#define DPRC_CMDID_GET_OBJ                      DPRC_CMD(0x15A)
+#define DPRC_CMDID_GET_OBJ_REG                  DPRC_CMD(0x15E)
+#define DPRC_CMDID_SET_OBJ_IRQ                  DPRC_CMD(0x15F)
+
+struct dprc_cmd_open {
+	__le32 container_id;
+};
+
+struct dprc_cmd_set_irq {
+	/* cmd word 0 */
+	__le32 irq_val;
+	u8 irq_index;
+	u8 pad[3];
+	/* cmd word 1 */
+	__le64 irq_addr;
+	/* cmd word 2 */
+	__le32 irq_num;
+};
+
+#define DPRC_ENABLE		0x1
+
+struct dprc_cmd_set_irq_enable {
+	u8 enable;
+	u8 pad[3];
+	u8 irq_index;
+};
+
+struct dprc_cmd_set_irq_mask {
+	__le32 mask;
+	u8 irq_index;
+};
+
+struct dprc_cmd_get_irq_status {
+	__le32 status;
+	u8 irq_index;
+};
+
+struct dprc_rsp_get_irq_status {
+	__le32 status;
+};
+
+struct dprc_cmd_clear_irq_status {
+	__le32 status;
+	u8 irq_index;
+};
+
+struct dprc_rsp_get_attributes {
+	/* response word 0 */
+	__le32 container_id;
+	__le16 icid;
+	__le16 pad;
+	/* response word 1 */
+	__le32 options;
+	__le32 portal_id;
+};
+
+struct dprc_rsp_get_obj_count {
+	__le32 pad;
+	__le32 obj_count;
+};
+
+struct dprc_cmd_get_obj {
+	__le32 obj_index;
+};
+
+struct dprc_rsp_get_obj {
+	/* response word 0 */
+	__le32 pad0;
+	__le32 id;
+	/* response word 1 */
+	__le16 vendor;
+	u8 irq_count;
+	u8 region_count;
+	__le32 state;
+	/* response word 2 */
+	__le16 version_major;
+	__le16 version_minor;
+	__le16 flags;
+	__le16 pad1;
+	/* response word 3-4 */
+	u8 type[16];
+	/* response word 5-6 */
+	u8 label[16];
+};
+
+struct dprc_cmd_get_obj_region {
+	/* cmd word 0 */
+	__le32 obj_id;
+	__le16 pad0;
+	u8 region_index;
+	u8 pad1;
+	/* cmd word 1-2 */
+	__le64 pad2[2];
+	/* cmd word 3-4 */
+	u8 obj_type[16];
+};
+
+struct dprc_rsp_get_obj_region {
+	/* response word 0 */
+	__le64 pad;
+	/* response word 1 */
+	__le64 base_addr;
+	/* response word 2 */
+	__le32 size;
+};
+
+struct dprc_cmd_set_obj_irq {
+	/* cmd word 0 */
+	__le32 irq_val;
+	u8 irq_index;
+	u8 pad[3];
+	/* cmd word 1 */
+	__le64 irq_addr;
+	/* cmd word 2 */
+	__le32 irq_num;
+	__le32 obj_id;
+	/* cmd word 3-4 */
+	u8 obj_type[16];
+};
+
+/*
+ * DPRC API for managing and querying DPAA resources
+ */
+int dprc_open(struct fsl_mc_io *mc_io,
+	      u32 cmd_flags,
+	      int container_id,
+	      u16 *token);
+
+int dprc_close(struct fsl_mc_io *mc_io,
+	       u32 cmd_flags,
+	       u16 token);
+
+/* DPRC IRQ events */
+
+/* IRQ event - Indicates that a new object added to the container */
+#define DPRC_IRQ_EVENT_OBJ_ADDED		0x00000001
+/* IRQ event - Indicates that an object was removed from the container */
+#define DPRC_IRQ_EVENT_OBJ_REMOVED		0x00000002
+/*
+ * IRQ event - Indicates that one of the descendant containers that opened by
+ * this container is destroyed
+ */
+#define DPRC_IRQ_EVENT_CONTAINER_DESTROYED	0x00000010
+
+/*
+ * IRQ event - Indicates that on one of the container's opened object is
+ * destroyed
+ */
+#define DPRC_IRQ_EVENT_OBJ_DESTROYED		0x00000020
+
+/* Irq event - Indicates that object is created at the container */
+#define DPRC_IRQ_EVENT_OBJ_CREATED		0x00000040
+
+/**
+ * struct dprc_irq_cfg - IRQ configuration
+ * @paddr:	Address that must be written to signal a message-based interrupt
+ * @val:	Value to write into irq_addr address
+ * @irq_num:	A user defined number associated with this IRQ
+ */
+struct dprc_irq_cfg {
+	     phys_addr_t paddr;
+	     u32 val;
+	     int irq_num;
+};
+
+int dprc_set_irq(struct fsl_mc_io *mc_io,
+		 u32 cmd_flags,
+		 u16 token,
+		 u8 irq_index,
+		 struct dprc_irq_cfg *irq_cfg);
+
+int dprc_set_irq_enable(struct fsl_mc_io *mc_io,
+			u32 cmd_flags,
+			u16 token,
+			u8 irq_index,
+			u8 en);
+
+int dprc_set_irq_mask(struct fsl_mc_io *mc_io,
+		      u32 cmd_flags,
+		      u16 token,
+		      u8 irq_index,
+		      u32 mask);
+
+int dprc_get_irq_status(struct fsl_mc_io *mc_io,
+			u32 cmd_flags,
+			u16 token,
+			u8 irq_index,
+			u32 *status);
+
+int dprc_clear_irq_status(struct fsl_mc_io *mc_io,
+			  u32 cmd_flags,
+			  u16 token,
+			  u8 irq_index,
+			  u32 status);
+
+/**
+ * struct dprc_attributes - Container attributes
+ * @container_id: Container's ID
+ * @icid: Container's ICID
+ * @portal_id: Container's portal ID
+ * @options: Container's options as set at container's creation
+ */
+struct dprc_attributes {
+	int container_id;
+	u16 icid;
+	int portal_id;
+	u64 options;
+};
+
+int dprc_get_attributes(struct fsl_mc_io *mc_io,
+			u32 cmd_flags,
+			u16 token,
+			struct dprc_attributes *attributes);
+
+int dprc_get_obj_count(struct fsl_mc_io *mc_io,
+		       u32 cmd_flags,
+		       u16 token,
+		       int *obj_count);
+
+int dprc_get_obj(struct fsl_mc_io *mc_io,
+		 u32 cmd_flags,
+		 u16 token,
+		 int obj_index,
+		 struct fsl_mc_obj_desc *obj_desc);
+
+int dprc_set_obj_irq(struct fsl_mc_io *mc_io,
+		     u32 cmd_flags,
+		     u16 token,
+		     char *obj_type,
+		     int obj_id,
+		     u8 irq_index,
+		     struct dprc_irq_cfg *irq_cfg);
+
+/* Region flags */
+/* Cacheable - Indicates that region should be mapped as cacheable */
+#define DPRC_REGION_CACHEABLE	0x00000001
+
+/**
+ * enum dprc_region_type - Region type
+ * @DPRC_REGION_TYPE_MC_PORTAL: MC portal region
+ * @DPRC_REGION_TYPE_QBMAN_PORTAL: Qbman portal region
+ */
+enum dprc_region_type {
+	DPRC_REGION_TYPE_MC_PORTAL,
+	DPRC_REGION_TYPE_QBMAN_PORTAL
+};
+
+/**
+ * struct dprc_region_desc - Mappable region descriptor
+ * @base_offset: Region offset from region's base address.
+ *	For DPMCP and DPRC objects, region base is offset from SoC MC portals
+ *	base address; For DPIO, region base is offset from SoC QMan portals
+ *	base address
+ * @size: Region size (in bytes)
+ * @flags: Region attributes
+ * @type: Portal region type
+ */
+struct dprc_region_desc {
+	u32 base_offset;
+	u32 size;
+	u32 flags;
+	enum dprc_region_type type;
+};
+
+int dprc_get_obj_region(struct fsl_mc_io *mc_io,
+			u32 cmd_flags,
+			u16 token,
+			char *obj_type,
+			int obj_id,
+			u8 region_index,
+			struct dprc_region_desc *region_desc);
+
+int dprc_get_api_version(struct fsl_mc_io *mc_io,
+			 u32 cmd_flags,
+			 u16 *major_ver,
+			 u16 *minor_ver);
+
+int dprc_get_container_id(struct fsl_mc_io *mc_io,
+			  u32 cmd_flags,
+			  int *container_id);
+
+/*
+ * Data Path Buffer Pool (DPBP) API
+ */
+
+/* DPBP Version */
+#define DPBP_VER_MAJOR				3
+#define DPBP_VER_MINOR				2
+
+/* Command versioning */
+#define DPBP_CMD_BASE_VERSION			1
+#define DPBP_CMD_ID_OFFSET			4
+
+#define DPBP_CMD(id)	(((id) << DPBP_CMD_ID_OFFSET) | DPBP_CMD_BASE_VERSION)
+
+/* Command IDs */
+#define DPBP_CMDID_CLOSE		DPBP_CMD(0x800)
+#define DPBP_CMDID_OPEN			DPBP_CMD(0x804)
+
+#define DPBP_CMDID_ENABLE		DPBP_CMD(0x002)
+#define DPBP_CMDID_DISABLE		DPBP_CMD(0x003)
+#define DPBP_CMDID_GET_ATTR		DPBP_CMD(0x004)
+#define DPBP_CMDID_RESET		DPBP_CMD(0x005)
+
+struct dpbp_cmd_open {
+	__le32 dpbp_id;
+};
+
+#define DPBP_ENABLE			0x1
+
+struct dpbp_rsp_get_attributes {
+	/* response word 0 */
+	__le16 pad;
+	__le16 bpid;
+	__le32 id;
+	/* response word 1 */
+	__le16 version_major;
+	__le16 version_minor;
+};
+
+/*
+ * Data Path Concentrator (DPCON) API
+ */
+
+/* DPCON Version */
+#define DPCON_VER_MAJOR				3
+#define DPCON_VER_MINOR				2
+
+/* Command versioning */
+#define DPCON_CMD_BASE_VERSION			1
+#define DPCON_CMD_ID_OFFSET			4
+
+#define DPCON_CMD(id)	(((id) << DPCON_CMD_ID_OFFSET) | DPCON_CMD_BASE_VERSION)
+
+/* Command IDs */
+#define DPCON_CMDID_CLOSE			DPCON_CMD(0x800)
+#define DPCON_CMDID_OPEN			DPCON_CMD(0x808)
+
+#define DPCON_CMDID_ENABLE			DPCON_CMD(0x002)
+#define DPCON_CMDID_DISABLE			DPCON_CMD(0x003)
+#define DPCON_CMDID_GET_ATTR			DPCON_CMD(0x004)
+#define DPCON_CMDID_RESET			DPCON_CMD(0x005)
+
+#define DPCON_CMDID_SET_NOTIFICATION		DPCON_CMD(0x100)
+
+struct dpcon_cmd_open {
+	__le32 dpcon_id;
+};
+
+#define DPCON_ENABLE			1
+
+struct dpcon_rsp_get_attr {
+	/* response word 0 */
+	__le32 id;
+	__le16 qbman_ch_id;
+	u8 num_priorities;
+	u8 pad;
+};
+
+struct dpcon_cmd_set_notification {
+	/* cmd word 0 */
+	__le32 dpio_id;
+	u8 priority;
+	u8 pad[3];
+	/* cmd word 1 */
+	__le64 user_ctx;
+};
+
+/**
+ * Maximum number of total IRQs that can be pre-allocated for an MC bus'
+ * IRQ pool
+ */
+#define FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS	256
+
+/**
+ * struct fsl_mc_resource_pool - Pool of MC resources of a given
+ * type
+ * @type: type of resources in the pool
+ * @max_count: maximum number of resources in the pool
+ * @free_count: number of free resources in the pool
+ * @mutex: mutex to serialize access to the pool's free list
+ * @free_list: anchor node of list of free resources in the pool
+ * @mc_bus: pointer to the MC bus that owns this resource pool
+ */
+struct fsl_mc_resource_pool {
+	enum fsl_mc_pool_type type;
+	int max_count;
+	int free_count;
+	struct mutex mutex;	/* serializes access to free_list */
+	struct list_head free_list;
+	struct fsl_mc_bus *mc_bus;
+};
+
+/**
+ * struct fsl_mc_bus - logical bus that corresponds to a physical DPRC
+ * @mc_dev: fsl-mc device for the bus device itself.
+ * @resource_pools: array of resource pools (one pool per resource type)
+ * for this MC bus. These resources represent allocatable entities
+ * from the physical DPRC.
+ * @irq_resources: Pointer to array of IRQ objects for the IRQ pool
+ * @scan_mutex: Serializes bus scanning
+ * @dprc_attr: DPRC attributes
+ */
+struct fsl_mc_bus {
+	struct fsl_mc_device mc_dev;
+	struct fsl_mc_resource_pool resource_pools[FSL_MC_NUM_POOL_TYPES];
+	struct fsl_mc_device_irq *irq_resources;
+	struct mutex scan_mutex;    /* serializes bus scanning */
+	struct dprc_attributes dprc_attr;
+};
+
+#define to_fsl_mc_bus(_mc_dev) \
+	container_of(_mc_dev, struct fsl_mc_bus, mc_dev)
+
+int __must_check fsl_mc_device_add(struct fsl_mc_obj_desc *obj_desc,
+				   struct fsl_mc_io *mc_io,
+				   struct device *parent_dev,
+				   struct fsl_mc_device **new_mc_dev);
+
+void fsl_mc_device_remove(struct fsl_mc_device *mc_dev);
+
+int __init dprc_driver_init(void);
+
+void dprc_driver_exit(void);
+
+int __init fsl_mc_allocator_driver_init(void);
+
+void fsl_mc_allocator_driver_exit(void);
+
+void fsl_mc_init_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
+
+void fsl_mc_cleanup_all_resource_pools(struct fsl_mc_device *mc_bus_dev);
+
+int __must_check fsl_mc_resource_allocate(struct fsl_mc_bus *mc_bus,
+					  enum fsl_mc_pool_type pool_type,
+					  struct fsl_mc_resource
+							  **new_resource);
+
+void fsl_mc_resource_free(struct fsl_mc_resource *resource);
+
+int fsl_mc_msi_domain_alloc_irqs(struct device *dev,
+				 unsigned int irq_count);
+
+void fsl_mc_msi_domain_free_irqs(struct device *dev);
+
+int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
+			   struct irq_domain **mc_msi_domain);
+
+int fsl_mc_populate_irq_pool(struct fsl_mc_bus *mc_bus,
+			     unsigned int irq_count);
+
+void fsl_mc_cleanup_irq_pool(struct fsl_mc_bus *mc_bus);
+
+int __must_check fsl_create_mc_io(struct device *dev,
+				  phys_addr_t mc_portal_phys_addr,
+				  u32 mc_portal_size,
+				  struct fsl_mc_device *dpmcp_dev,
+				  u32 flags, struct fsl_mc_io **new_mc_io);
+
+void fsl_destroy_mc_io(struct fsl_mc_io *mc_io);
+
+bool fsl_mc_is_root_dprc(struct device *dev);
+
+#endif /* _FSL_MC_PRIVATE_H_ */
diff --git a/drivers/bus/fsl-mc/mc-io.c b/drivers/bus/fsl-mc/mc-io.c
new file mode 100644
index 000000000000..7226cfc49b6f
--- /dev/null
+++ b/drivers/bus/fsl-mc/mc-io.c
@@ -0,0 +1,268 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
+ *
+ */
+
+#include <linux/io.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+static int fsl_mc_io_set_dpmcp(struct fsl_mc_io *mc_io,
+			       struct fsl_mc_device *dpmcp_dev)
+{
+	int error;
+
+	if (mc_io->dpmcp_dev)
+		return -EINVAL;
+
+	if (dpmcp_dev->mc_io)
+		return -EINVAL;
+
+	error = dpmcp_open(mc_io,
+			   0,
+			   dpmcp_dev->obj_desc.id,
+			   &dpmcp_dev->mc_handle);
+	if (error < 0)
+		return error;
+
+	mc_io->dpmcp_dev = dpmcp_dev;
+	dpmcp_dev->mc_io = mc_io;
+	return 0;
+}
+
+static void fsl_mc_io_unset_dpmcp(struct fsl_mc_io *mc_io)
+{
+	int error;
+	struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
+
+	error = dpmcp_close(mc_io,
+			    0,
+			    dpmcp_dev->mc_handle);
+	if (error < 0) {
+		dev_err(&dpmcp_dev->dev, "dpmcp_close() failed: %d\n",
+			error);
+	}
+
+	mc_io->dpmcp_dev = NULL;
+	dpmcp_dev->mc_io = NULL;
+}
+
+/**
+ * Creates an MC I/O object
+ *
+ * @dev: device to be associated with the MC I/O object
+ * @mc_portal_phys_addr: physical address of the MC portal to use
+ * @mc_portal_size: size in bytes of the MC portal
+ * @dpmcp-dev: Pointer to the DPMCP object associated with this MC I/O
+ * object or NULL if none.
+ * @flags: flags for the new MC I/O object
+ * @new_mc_io: Area to return pointer to newly created MC I/O object
+ *
+ * Returns '0' on Success; Error code otherwise.
+ */
+int __must_check fsl_create_mc_io(struct device *dev,
+				  phys_addr_t mc_portal_phys_addr,
+				  u32 mc_portal_size,
+				  struct fsl_mc_device *dpmcp_dev,
+				  u32 flags, struct fsl_mc_io **new_mc_io)
+{
+	int error;
+	struct fsl_mc_io *mc_io;
+	void __iomem *mc_portal_virt_addr;
+	struct resource *res;
+
+	mc_io = devm_kzalloc(dev, sizeof(*mc_io), GFP_KERNEL);
+	if (!mc_io)
+		return -ENOMEM;
+
+	mc_io->dev = dev;
+	mc_io->flags = flags;
+	mc_io->portal_phys_addr = mc_portal_phys_addr;
+	mc_io->portal_size = mc_portal_size;
+	if (flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
+		spin_lock_init(&mc_io->spinlock);
+	else
+		mutex_init(&mc_io->mutex);
+
+	res = devm_request_mem_region(dev,
+				      mc_portal_phys_addr,
+				      mc_portal_size,
+				      "mc_portal");
+	if (!res) {
+		dev_err(dev,
+			"devm_request_mem_region failed for MC portal %pa\n",
+			&mc_portal_phys_addr);
+		return -EBUSY;
+	}
+
+	mc_portal_virt_addr = devm_ioremap_nocache(dev,
+						   mc_portal_phys_addr,
+						   mc_portal_size);
+	if (!mc_portal_virt_addr) {
+		dev_err(dev,
+			"devm_ioremap_nocache failed for MC portal %pa\n",
+			&mc_portal_phys_addr);
+		return -ENXIO;
+	}
+
+	mc_io->portal_virt_addr = mc_portal_virt_addr;
+	if (dpmcp_dev) {
+		error = fsl_mc_io_set_dpmcp(mc_io, dpmcp_dev);
+		if (error < 0)
+			goto error_destroy_mc_io;
+	}
+
+	*new_mc_io = mc_io;
+	return 0;
+
+error_destroy_mc_io:
+	fsl_destroy_mc_io(mc_io);
+	return error;
+}
+
+/**
+ * Destroys an MC I/O object
+ *
+ * @mc_io: MC I/O object to destroy
+ */
+void fsl_destroy_mc_io(struct fsl_mc_io *mc_io)
+{
+	struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
+
+	if (dpmcp_dev)
+		fsl_mc_io_unset_dpmcp(mc_io);
+
+	devm_iounmap(mc_io->dev, mc_io->portal_virt_addr);
+	devm_release_mem_region(mc_io->dev,
+				mc_io->portal_phys_addr,
+				mc_io->portal_size);
+
+	mc_io->portal_virt_addr = NULL;
+	devm_kfree(mc_io->dev, mc_io);
+}
+
+/**
+ * fsl_mc_portal_allocate - Allocates an MC portal
+ *
+ * @mc_dev: MC device for which the MC portal is to be allocated
+ * @mc_io_flags: Flags for the fsl_mc_io object that wraps the allocated
+ * MC portal.
+ * @new_mc_io: Pointer to area where the pointer to the fsl_mc_io object
+ * that wraps the allocated MC portal is to be returned
+ *
+ * This function allocates an MC portal from the device's parent DPRC,
+ * from the corresponding MC bus' pool of MC portals and wraps
+ * it in a new fsl_mc_io object. If 'mc_dev' is a DPRC itself, the
+ * portal is allocated from its own MC bus.
+ */
+int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev,
+					u16 mc_io_flags,
+					struct fsl_mc_io **new_mc_io)
+{
+	struct fsl_mc_device *mc_bus_dev;
+	struct fsl_mc_bus *mc_bus;
+	phys_addr_t mc_portal_phys_addr;
+	size_t mc_portal_size;
+	struct fsl_mc_device *dpmcp_dev;
+	int error = -EINVAL;
+	struct fsl_mc_resource *resource = NULL;
+	struct fsl_mc_io *mc_io = NULL;
+
+	if (mc_dev->flags & FSL_MC_IS_DPRC) {
+		mc_bus_dev = mc_dev;
+	} else {
+		if (!dev_is_fsl_mc(mc_dev->dev.parent))
+			return error;
+
+		mc_bus_dev = to_fsl_mc_device(mc_dev->dev.parent);
+	}
+
+	mc_bus = to_fsl_mc_bus(mc_bus_dev);
+	*new_mc_io = NULL;
+	error = fsl_mc_resource_allocate(mc_bus, FSL_MC_POOL_DPMCP, &resource);
+	if (error < 0)
+		return error;
+
+	error = -EINVAL;
+	dpmcp_dev = resource->data;
+
+	if (dpmcp_dev->obj_desc.ver_major < DPMCP_MIN_VER_MAJOR ||
+	    (dpmcp_dev->obj_desc.ver_major == DPMCP_MIN_VER_MAJOR &&
+	     dpmcp_dev->obj_desc.ver_minor < DPMCP_MIN_VER_MINOR)) {
+		dev_err(&dpmcp_dev->dev,
+			"ERROR: Version %d.%d of DPMCP not supported.\n",
+			dpmcp_dev->obj_desc.ver_major,
+			dpmcp_dev->obj_desc.ver_minor);
+		error = -ENOTSUPP;
+		goto error_cleanup_resource;
+	}
+
+	mc_portal_phys_addr = dpmcp_dev->regions[0].start;
+	mc_portal_size = resource_size(dpmcp_dev->regions);
+
+	error = fsl_create_mc_io(&mc_bus_dev->dev,
+				 mc_portal_phys_addr,
+				 mc_portal_size, dpmcp_dev,
+				 mc_io_flags, &mc_io);
+	if (error < 0)
+		goto error_cleanup_resource;
+
+	*new_mc_io = mc_io;
+	return 0;
+
+error_cleanup_resource:
+	fsl_mc_resource_free(resource);
+	return error;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_portal_allocate);
+
+/**
+ * fsl_mc_portal_free - Returns an MC portal to the pool of free MC portals
+ * of a given MC bus
+ *
+ * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free
+ */
+void fsl_mc_portal_free(struct fsl_mc_io *mc_io)
+{
+	struct fsl_mc_device *dpmcp_dev;
+	struct fsl_mc_resource *resource;
+
+	/*
+	 * Every mc_io obtained by calling fsl_mc_portal_allocate() is supposed
+	 * to have a DPMCP object associated with.
+	 */
+	dpmcp_dev = mc_io->dpmcp_dev;
+
+	resource = dpmcp_dev->resource;
+	if (!resource || resource->type != FSL_MC_POOL_DPMCP)
+		return;
+
+	if (resource->data != dpmcp_dev)
+		return;
+
+	fsl_destroy_mc_io(mc_io);
+	fsl_mc_resource_free(resource);
+}
+EXPORT_SYMBOL_GPL(fsl_mc_portal_free);
+
+/**
+ * fsl_mc_portal_reset - Resets the dpmcp object for a given fsl_mc_io object
+ *
+ * @mc_io: Pointer to the fsl_mc_io object that wraps the MC portal to free
+ */
+int fsl_mc_portal_reset(struct fsl_mc_io *mc_io)
+{
+	int error;
+	struct fsl_mc_device *dpmcp_dev = mc_io->dpmcp_dev;
+
+	error = dpmcp_reset(mc_io, 0, dpmcp_dev->mc_handle);
+	if (error < 0) {
+		dev_err(&dpmcp_dev->dev, "dpmcp_reset() failed: %d\n", error);
+		return error;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(fsl_mc_portal_reset);
diff --git a/drivers/bus/fsl-mc/mc-sys.c b/drivers/bus/fsl-mc/mc-sys.c
new file mode 100644
index 000000000000..3221a7fbaf0a
--- /dev/null
+++ b/drivers/bus/fsl-mc/mc-sys.c
@@ -0,0 +1,296 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright 2013-2016 Freescale Semiconductor Inc.
+ *
+ * I/O services to send MC commands to the MC hardware
+ *
+ */
+
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/io-64-nonatomic-hi-lo.h>
+#include <linux/fsl/mc.h>
+
+#include "fsl-mc-private.h"
+
+/**
+ * Timeout in milliseconds to wait for the completion of an MC command
+ */
+#define MC_CMD_COMPLETION_TIMEOUT_MS	500
+
+/*
+ * usleep_range() min and max values used to throttle down polling
+ * iterations while waiting for MC command completion
+ */
+#define MC_CMD_COMPLETION_POLLING_MIN_SLEEP_USECS    10
+#define MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS    500
+
+static enum mc_cmd_status mc_cmd_hdr_read_status(struct fsl_mc_command *cmd)
+{
+	struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
+
+	return (enum mc_cmd_status)hdr->status;
+}
+
+static u16 mc_cmd_hdr_read_cmdid(struct fsl_mc_command *cmd)
+{
+	struct mc_cmd_header *hdr = (struct mc_cmd_header *)&cmd->header;
+	u16 cmd_id = le16_to_cpu(hdr->cmd_id);
+
+	return cmd_id;
+}
+
+static int mc_status_to_error(enum mc_cmd_status status)
+{
+	static const int mc_status_to_error_map[] = {
+		[MC_CMD_STATUS_OK] = 0,
+		[MC_CMD_STATUS_AUTH_ERR] = -EACCES,
+		[MC_CMD_STATUS_NO_PRIVILEGE] = -EPERM,
+		[MC_CMD_STATUS_DMA_ERR] = -EIO,
+		[MC_CMD_STATUS_CONFIG_ERR] = -ENXIO,
+		[MC_CMD_STATUS_TIMEOUT] = -ETIMEDOUT,
+		[MC_CMD_STATUS_NO_RESOURCE] = -ENAVAIL,
+		[MC_CMD_STATUS_NO_MEMORY] = -ENOMEM,
+		[MC_CMD_STATUS_BUSY] = -EBUSY,
+		[MC_CMD_STATUS_UNSUPPORTED_OP] = -ENOTSUPP,
+		[MC_CMD_STATUS_INVALID_STATE] = -ENODEV,
+	};
+
+	if ((u32)status >= ARRAY_SIZE(mc_status_to_error_map))
+		return -EINVAL;
+
+	return mc_status_to_error_map[status];
+}
+
+static const char *mc_status_to_string(enum mc_cmd_status status)
+{
+	static const char *const status_strings[] = {
+		[MC_CMD_STATUS_OK] = "Command completed successfully",
+		[MC_CMD_STATUS_READY] = "Command ready to be processed",
+		[MC_CMD_STATUS_AUTH_ERR] = "Authentication error",
+		[MC_CMD_STATUS_NO_PRIVILEGE] = "No privilege",
+		[MC_CMD_STATUS_DMA_ERR] = "DMA or I/O error",
+		[MC_CMD_STATUS_CONFIG_ERR] = "Configuration error",
+		[MC_CMD_STATUS_TIMEOUT] = "Operation timed out",
+		[MC_CMD_STATUS_NO_RESOURCE] = "No resources",
+		[MC_CMD_STATUS_NO_MEMORY] = "No memory available",
+		[MC_CMD_STATUS_BUSY] = "Device is busy",
+		[MC_CMD_STATUS_UNSUPPORTED_OP] = "Unsupported operation",
+		[MC_CMD_STATUS_INVALID_STATE] = "Invalid state"
+	};
+
+	if ((unsigned int)status >= ARRAY_SIZE(status_strings))
+		return "Unknown MC error";
+
+	return status_strings[status];
+}
+
+/**
+ * mc_write_command - writes a command to a Management Complex (MC) portal
+ *
+ * @portal: pointer to an MC portal
+ * @cmd: pointer to a filled command
+ */
+static inline void mc_write_command(struct fsl_mc_command __iomem *portal,
+				    struct fsl_mc_command *cmd)
+{
+	int i;
+
+	/* copy command parameters into the portal */
+	for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
+		/*
+		 * Data is already in the expected LE byte-order. Do an
+		 * extra LE -> CPU conversion so that the CPU -> LE done in
+		 * the device io write api puts it back in the right order.
+		 */
+		writeq_relaxed(le64_to_cpu(cmd->params[i]), &portal->params[i]);
+
+	/* submit the command by writing the header */
+	writeq(le64_to_cpu(cmd->header), &portal->header);
+}
+
+/**
+ * mc_read_response - reads the response for the last MC command from a
+ * Management Complex (MC) portal
+ *
+ * @portal: pointer to an MC portal
+ * @resp: pointer to command response buffer
+ *
+ * Returns MC_CMD_STATUS_OK on Success; Error code otherwise.
+ */
+static inline enum mc_cmd_status mc_read_response(struct fsl_mc_command __iomem
+						  *portal,
+						  struct fsl_mc_command *resp)
+{
+	int i;
+	enum mc_cmd_status status;
+
+	/* Copy command response header from MC portal: */
+	resp->header = cpu_to_le64(readq_relaxed(&portal->header));
+	status = mc_cmd_hdr_read_status(resp);
+	if (status != MC_CMD_STATUS_OK)
+		return status;
+
+	/* Copy command response data from MC portal: */
+	for (i = 0; i < MC_CMD_NUM_OF_PARAMS; i++)
+		/*
+		 * Data is expected to be in LE byte-order. Do an
+		 * extra CPU -> LE to revert the LE -> CPU done in
+		 * the device io read api.
+		 */
+		resp->params[i] =
+			cpu_to_le64(readq_relaxed(&portal->params[i]));
+
+	return status;
+}
+
+/**
+ * Waits for the completion of an MC command doing preemptible polling.
+ * uslepp_range() is called between polling iterations.
+ *
+ * @mc_io: MC I/O object to be used
+ * @cmd: command buffer to receive MC response
+ * @mc_status: MC command completion status
+ */
+static int mc_polling_wait_preemptible(struct fsl_mc_io *mc_io,
+				       struct fsl_mc_command *cmd,
+				       enum mc_cmd_status *mc_status)
+{
+	enum mc_cmd_status status;
+	unsigned long jiffies_until_timeout =
+		jiffies + msecs_to_jiffies(MC_CMD_COMPLETION_TIMEOUT_MS);
+
+	/*
+	 * Wait for response from the MC hardware:
+	 */
+	for (;;) {
+		status = mc_read_response(mc_io->portal_virt_addr, cmd);
+		if (status != MC_CMD_STATUS_READY)
+			break;
+
+		/*
+		 * TODO: When MC command completion interrupts are supported
+		 * call wait function here instead of usleep_range()
+		 */
+		usleep_range(MC_CMD_COMPLETION_POLLING_MIN_SLEEP_USECS,
+			     MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS);
+
+		if (time_after_eq(jiffies, jiffies_until_timeout)) {
+			dev_dbg(mc_io->dev,
+				"MC command timed out (portal: %pa, dprc handle: %#x, command: %#x)\n",
+				 &mc_io->portal_phys_addr,
+				 (unsigned int)mc_cmd_hdr_read_token(cmd),
+				 (unsigned int)mc_cmd_hdr_read_cmdid(cmd));
+
+			return -ETIMEDOUT;
+		}
+	}
+
+	*mc_status = status;
+	return 0;
+}
+
+/**
+ * Waits for the completion of an MC command doing atomic polling.
+ * udelay() is called between polling iterations.
+ *
+ * @mc_io: MC I/O object to be used
+ * @cmd: command buffer to receive MC response
+ * @mc_status: MC command completion status
+ */
+static int mc_polling_wait_atomic(struct fsl_mc_io *mc_io,
+				  struct fsl_mc_command *cmd,
+				  enum mc_cmd_status *mc_status)
+{
+	enum mc_cmd_status status;
+	unsigned long timeout_usecs = MC_CMD_COMPLETION_TIMEOUT_MS * 1000;
+
+	BUILD_BUG_ON((MC_CMD_COMPLETION_TIMEOUT_MS * 1000) %
+		     MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS != 0);
+
+	for (;;) {
+		status = mc_read_response(mc_io->portal_virt_addr, cmd);
+		if (status != MC_CMD_STATUS_READY)
+			break;
+
+		udelay(MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS);
+		timeout_usecs -= MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS;
+		if (timeout_usecs == 0) {
+			dev_dbg(mc_io->dev,
+				"MC command timed out (portal: %pa, dprc handle: %#x, command: %#x)\n",
+				 &mc_io->portal_phys_addr,
+				 (unsigned int)mc_cmd_hdr_read_token(cmd),
+				 (unsigned int)mc_cmd_hdr_read_cmdid(cmd));
+
+			return -ETIMEDOUT;
+		}
+	}
+
+	*mc_status = status;
+	return 0;
+}
+
+/**
+ * Sends a command to the MC device using the given MC I/O object
+ *
+ * @mc_io: MC I/O object to be used
+ * @cmd: command to be sent
+ *
+ * Returns '0' on Success; Error code otherwise.
+ */
+int mc_send_command(struct fsl_mc_io *mc_io, struct fsl_mc_command *cmd)
+{
+	int error;
+	enum mc_cmd_status status;
+	unsigned long irq_flags = 0;
+
+	if (in_irq() && !(mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL))
+		return -EINVAL;
+
+	if (mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
+		spin_lock_irqsave(&mc_io->spinlock, irq_flags);
+	else
+		mutex_lock(&mc_io->mutex);
+
+	/*
+	 * Send command to the MC hardware:
+	 */
+	mc_write_command(mc_io->portal_virt_addr, cmd);
+
+	/*
+	 * Wait for response from the MC hardware:
+	 */
+	if (!(mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL))
+		error = mc_polling_wait_preemptible(mc_io, cmd, &status);
+	else
+		error = mc_polling_wait_atomic(mc_io, cmd, &status);
+
+	if (error < 0)
+		goto common_exit;
+
+	if (status != MC_CMD_STATUS_OK) {
+		dev_dbg(mc_io->dev,
+			"MC command failed: portal: %pa, dprc handle: %#x, command: %#x, status: %s (%#x)\n",
+			 &mc_io->portal_phys_addr,
+			 (unsigned int)mc_cmd_hdr_read_token(cmd),
+			 (unsigned int)mc_cmd_hdr_read_cmdid(cmd),
+			 mc_status_to_string(status),
+			 (unsigned int)status);
+
+		error = mc_status_to_error(status);
+		goto common_exit;
+	}
+
+	error = 0;
+common_exit:
+	if (mc_io->flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
+		spin_unlock_irqrestore(&mc_io->spinlock, irq_flags);
+	else
+		mutex_unlock(&mc_io->mutex);
+
+	return error;
+}
+EXPORT_SYMBOL_GPL(mc_send_command);