dpaa2/mc/dpni.c

/*-
 * This file is provided under a dual BSD/GPLv2 license. When using or
 * redistributing this file, you may do so under either license.
 *
 *   BSD LICENSE
 *
 * Copyright 2013-2016 Freescale Semiconductor Inc.
 * Copyright 2016 NXP.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * * Neither the name of the above-listed copyright holders nor the
 * names of any contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 *
 *   GPL LICENSE SUMMARY
 *
 * ALTERNATIVELY, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") as published by the Free Software
 * Foundation, either version 2 of that License or (at your option) any
 * later version.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
#include <fsl_mc_sys.h>
#include <fsl_mc_cmd.h>
#include <fsl_dpni.h>
#include <fsl_dpni_cmd.h>

/**
 * dpni_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_'
 * @dpni_id:	DPNI 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 dpni_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 dpni_open(struct fsl_mc_io *mc_io,
	      uint32_t cmd_flags,
	      int dpni_id,
	      uint16_t *token)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_open *cmd_params;

	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_OPEN,
					  cmd_flags,
					  0);
	cmd_params = (struct dpni_cmd_open *)cmd.params;
	cmd_params->dpni_id = cpu_to_le32(dpni_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;
}

/**
 * dpni_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 DPNI 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 dpni_close(struct fsl_mc_io *mc_io,
	       uint32_t cmd_flags,
	       uint16_t token)
{
	struct mc_command cmd = { 0 };

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_CLOSE,
					  cmd_flags,
					  token);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_create() - Create the DPNI object
 * @mc_io:	Pointer to MC portal's I/O object
 * @dprc_token:	Parent container token; '0' for default container
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @cfg:	Configuration structure
 * @obj_id:	Returned object id
 *
 * Create the DPNI object, allocate required resources and
 * perform required initialization.
 *
 * The object can be created either by declaring it in the
 * DPL file, or by calling this function.
 *
 * The function accepts an authentication token of a parent
 * container that this object should be assigned to. The token
 * can be '0' so the object will be assigned to the default container.
 * The newly created object can be opened with the returned
 * object id and using the container's associated tokens and MC portals.
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_create(struct fsl_mc_io *mc_io,
		uint16_t dprc_token,
		uint32_t cmd_flags,
		const struct dpni_cfg *cfg,
		uint32_t *obj_id)
{
	struct dpni_cmd_create *cmd_params;
	struct mc_command cmd = { 0 };
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_CREATE,
					  cmd_flags,
					  dprc_token);
	cmd_params = (struct dpni_cmd_create *)cmd.params;
	cmd_params->options = cpu_to_le32(cfg->options);
	cmd_params->num_queues = cfg->num_queues;
	cmd_params->num_tcs = cfg->num_tcs;
	cmd_params->mac_filter_entries = cfg->mac_filter_entries;
	cmd_params->vlan_filter_entries =  cfg->vlan_filter_entries;
	cmd_params->qos_entries = cfg->qos_entries;
	cmd_params->fs_entries = cpu_to_le16(cfg->fs_entries);

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	*obj_id = mc_cmd_read_object_id(&cmd);

	return 0;
}

/**
 * dpni_destroy() - Destroy the DPNI object and release all its resources.
 * @mc_io:	Pointer to MC portal's I/O object
 * @dprc_token: Parent container token; '0' for default container
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @object_id:	The object id; it must be a valid id within the container that
 * created this object;
 *
 * The function accepts the authentication token of the parent container that
 * created the object (not the one that currently owns the object). The object
 * is searched within parent using the provided 'object_id'.
 * All tokens to the object must be closed before calling destroy.
 *
 * Return:	'0' on Success; error code otherwise.
 */
int dpni_destroy(struct fsl_mc_io *mc_io,
		 uint16_t dprc_token,
		 uint32_t cmd_flags,
		 uint32_t object_id)
{
	struct dpni_cmd_destroy *cmd_params;
	struct mc_command cmd = { 0 };

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_DESTROY,
					  cmd_flags,
					  dprc_token);
	/* set object id to destroy */
	cmd_params = (struct dpni_cmd_destroy *)cmd.params;
	cmd_params->dpsw_id = cpu_to_le32(object_id);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_set_pools() - Set buffer pools configuration
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @cfg:	Buffer pools configuration
 *
 * mandatory for DPNI operation
 * warning:Allowed only when DPNI is disabled
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_set_pools(struct fsl_mc_io *mc_io,
		   uint32_t cmd_flags,
		   uint16_t token,
		   const struct dpni_pools_cfg *cfg)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_set_pools *cmd_params;
	int i;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_POOLS,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_set_pools *)cmd.params;
	cmd_params->num_dpbp = cfg->num_dpbp;
	for (i = 0; i < DPNI_MAX_DPBP; i++) {
		cmd_params->pool[i].dpbp_id =
			cpu_to_le16(cfg->pools[i].dpbp_id);
		cmd_params->pool[i].priority_mask =
			cfg->pools[i].priority_mask;
		cmd_params->buffer_size[i] =
			cpu_to_le16(cfg->pools[i].buffer_size);
		cmd_params->backup_pool_mask |=
			DPNI_BACKUP_POOL(cfg->pools[i].backup_pool, i);
	}

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_enable() - Enable the DPNI, allow sending and receiving frames.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_enable(struct fsl_mc_io *mc_io,
		uint32_t cmd_flags,
		uint16_t token)
{
	struct mc_command cmd = { 0 };

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_ENABLE,
					  cmd_flags,
					  token);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_disable() - Disable the DPNI, stop sending and receiving frames.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_disable(struct fsl_mc_io *mc_io,
		 uint32_t cmd_flags,
		 uint16_t token)
{
	struct mc_command cmd = { 0 };

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_DISABLE,
					  cmd_flags,
					  token);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_is_enabled() - Check if the DPNI is enabled.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @en:		Returns '1' if object is enabled; '0' otherwise
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_is_enabled(struct fsl_mc_io *mc_io,
		    uint32_t cmd_flags,
		    uint16_t token,
		    int *en)
{
	struct mc_command cmd = { 0 };
	struct dpni_rsp_is_enabled *rsp_params;
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_IS_ENABLED,
					  cmd_flags,
					  token);

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_is_enabled *)cmd.params;
	*en = dpni_get_field(rsp_params->enabled, ENABLE);

	return 0;
}

/**
 * dpni_reset() - Reset the DPNI, 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 DPNI object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_reset(struct fsl_mc_io *mc_io,
	       uint32_t cmd_flags,
	       uint16_t token)
{
	struct mc_command cmd = { 0 };

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_RESET,
					  cmd_flags,
					  token);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_get_attributes() - Retrieve DPNI 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 DPNI object
 * @attr:	Object's attributes
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_get_attributes(struct fsl_mc_io *mc_io,
			uint32_t cmd_flags,
			uint16_t token,
			struct dpni_attr *attr)
{
	struct mc_command cmd = { 0 };
	struct dpni_rsp_get_attr *rsp_params;

	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_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 dpni_rsp_get_attr *)cmd.params;
	attr->options = le32_to_cpu(rsp_params->options);
	attr->num_queues = rsp_params->num_queues;
	attr->num_rx_tcs = rsp_params->num_rx_tcs;
	attr->num_tx_tcs = rsp_params->num_tx_tcs;
	attr->mac_filter_entries = rsp_params->mac_filter_entries;
	attr->vlan_filter_entries = rsp_params->vlan_filter_entries;
	attr->qos_entries = rsp_params->qos_entries;
	attr->fs_entries = le16_to_cpu(rsp_params->fs_entries);
	attr->qos_key_size = rsp_params->qos_key_size;
	attr->fs_key_size = rsp_params->fs_key_size;
	attr->wriop_version = le16_to_cpu(rsp_params->wriop_version);

	return 0;
}

/**
 * dpni_set_errors_behavior() - Set errors behavior
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @cfg:	Errors configuration
 *
 * This function may be called numerous times with different
 * error masks
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_set_errors_behavior(struct fsl_mc_io *mc_io,
			     uint32_t cmd_flags,
			     uint16_t token,
			     struct dpni_error_cfg *cfg)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_set_errors_behavior *cmd_params;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_ERRORS_BEHAVIOR,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_set_errors_behavior *)cmd.params;
	cmd_params->errors = cpu_to_le32(cfg->errors);
	dpni_set_field(cmd_params->flags, ERROR_ACTION, cfg->error_action);
	dpni_set_field(cmd_params->flags, FRAME_ANN, cfg->set_frame_annotation);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_get_buffer_layout() - Retrieve buffer layout 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 DPNI object
 * @qtype:	Type of queue to retrieve configuration for
 * @layout:	Returns buffer layout attributes
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_get_buffer_layout(struct fsl_mc_io *mc_io,
			   uint32_t cmd_flags,
			   uint16_t token,
			   enum dpni_queue_type qtype,
			   struct dpni_buffer_layout *layout)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_get_buffer_layout *cmd_params;
	struct dpni_rsp_get_buffer_layout *rsp_params;
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_BUFFER_LAYOUT,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_get_buffer_layout *)cmd.params;
	cmd_params->qtype = qtype;

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_get_buffer_layout *)cmd.params;
	layout->pass_timestamp = dpni_get_field(rsp_params->flags, PASS_TS);
	layout->pass_parser_result = dpni_get_field(rsp_params->flags, PASS_PR);
	layout->pass_frame_status = dpni_get_field(rsp_params->flags, PASS_FS);
	layout->private_data_size = le16_to_cpu(rsp_params->private_data_size);
	layout->data_align = le16_to_cpu(rsp_params->data_align);
	layout->data_head_room = le16_to_cpu(rsp_params->head_room);
	layout->data_tail_room = le16_to_cpu(rsp_params->tail_room);

	return 0;
}

/**
 * dpni_set_buffer_layout() - Set buffer layout configuration.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @qtype:	Type of queue this configuration applies to
 * @layout:	Buffer layout configuration
 *
 * Return:	'0' on Success; Error code otherwise.
 *
 * @warning	Allowed only when DPNI is disabled
 */
int dpni_set_buffer_layout(struct fsl_mc_io *mc_io,
			   uint32_t cmd_flags,
			   uint16_t token,
			   enum dpni_queue_type qtype,
			   const struct dpni_buffer_layout *layout)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_set_buffer_layout *cmd_params;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_BUFFER_LAYOUT,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_set_buffer_layout *)cmd.params;
	cmd_params->qtype = qtype;
	cmd_params->options = cpu_to_le16(layout->options);
	dpni_set_field(cmd_params->flags, PASS_TS, layout->pass_timestamp);
	dpni_set_field(cmd_params->flags, PASS_PR, layout->pass_parser_result);
	dpni_set_field(cmd_params->flags, PASS_FS, layout->pass_frame_status);
	cmd_params->private_data_size = cpu_to_le16(layout->private_data_size);
	cmd_params->data_align = cpu_to_le16(layout->data_align);
	cmd_params->head_room = cpu_to_le16(layout->data_head_room);
	cmd_params->tail_room = cpu_to_le16(layout->data_tail_room);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_set_offload() - Set DPNI offload configuration.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @type:	Type of DPNI offload
 * @config:	Offload configuration.
 *		For checksum offloads, non-zero value enables the offload
 *
 * Return:     '0' on Success; Error code otherwise.
 *
 * @warning    Allowed only when DPNI is disabled
 */

int dpni_set_offload(struct fsl_mc_io *mc_io,
		     uint32_t cmd_flags,
		     uint16_t token,
		     enum dpni_offload type,
		     uint32_t config)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_set_offload *cmd_params;

	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_OFFLOAD,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_set_offload *)cmd.params;
	cmd_params->dpni_offload = type;
	cmd_params->config = cpu_to_le32(config);

	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_get_offload() - Get DPNI offload configuration.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @type:	Type of DPNI offload
 * @config:	Offload configuration.
 *			For checksum offloads, a value of 1 indicates that the
 *			offload is enabled.
 *
 * Return:	'0' on Success; Error code otherwise.
 *
 * @warning	Allowed only when DPNI is disabled
 */
int dpni_get_offload(struct fsl_mc_io *mc_io,
		     uint32_t cmd_flags,
		     uint16_t token,
		     enum dpni_offload type,
		     uint32_t *config)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_get_offload *cmd_params;
	struct dpni_rsp_get_offload *rsp_params;
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_OFFLOAD,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_get_offload *)cmd.params;
	cmd_params->dpni_offload = type;

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_get_offload *)cmd.params;
	*config = le32_to_cpu(rsp_params->config);

	return 0;
}

/**
 * dpni_get_qdid() - Get the Queuing Destination ID (QDID) that should be used
 *			for enqueue operations
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @qtype:	Type of queue to receive QDID for
 * @qdid:	Returned virtual QDID value that should be used as an argument
 *			in all enqueue operations
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_get_qdid(struct fsl_mc_io *mc_io,
		  uint32_t cmd_flags,
		  uint16_t token,
		  enum dpni_queue_type qtype,
		  uint16_t *qdid)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_get_qdid *cmd_params;
	struct dpni_rsp_get_qdid *rsp_params;
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_QDID,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_get_qdid *)cmd.params;
	cmd_params->qtype = qtype;

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_get_qdid *)cmd.params;
	*qdid = le16_to_cpu(rsp_params->qdid);

	return 0;
}

/**
 * dpni_get_tx_data_offset() - Get the Tx data offset (from start of buffer)
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @data_offset: Tx data offset (from start of buffer)
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_get_tx_data_offset(struct fsl_mc_io *mc_io,
			    uint32_t cmd_flags,
			    uint16_t token,
			    uint16_t *data_offset)
{
	struct mc_command cmd = { 0 };
	struct dpni_rsp_get_tx_data_offset *rsp_params;
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_TX_DATA_OFFSET,
					  cmd_flags,
					  token);

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_get_tx_data_offset *)cmd.params;
	*data_offset = le16_to_cpu(rsp_params->data_offset);

	return 0;
}

/**
 * dpni_set_link_cfg() - set the link configuration.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @cfg:	Link configuration
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_set_link_cfg(struct fsl_mc_io *mc_io,
		      uint32_t cmd_flags,
		      uint16_t token,
		      const struct dpni_link_cfg *cfg)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_set_link_cfg *cmd_params;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_LINK_CFG,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_set_link_cfg *)cmd.params;
	cmd_params->rate = cpu_to_le32(cfg->rate);
	cmd_params->options = cpu_to_le64(cfg->options);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_get_link_state() - Return the link state (either up or down)
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @state:	Returned link state;
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_get_link_state(struct fsl_mc_io *mc_io,
			uint32_t cmd_flags,
			uint16_t token,
			struct dpni_link_state *state)
{
	struct mc_command cmd = { 0 };
	struct dpni_rsp_get_link_state *rsp_params;
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_LINK_STATE,
					  cmd_flags,
					  token);

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_get_link_state *)cmd.params;
	state->up = dpni_get_field(rsp_params->flags, LINK_STATE);
	state->rate = le32_to_cpu(rsp_params->rate);
	state->options = le64_to_cpu(rsp_params->options);

	return 0;
}

/**
 * dpni_set_max_frame_length() - Set the maximum received frame length.
 * @mc_io:		Pointer to MC portal's I/O object
 * @cmd_flags:		Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:		Token of DPNI object
 * @max_frame_length:	Maximum received frame length (in bytes);
 *			frame is discarded if its length exceeds this value
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_set_max_frame_length(struct fsl_mc_io *mc_io,
			      uint32_t cmd_flags,
			      uint16_t token,
			      uint16_t max_frame_length)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_set_max_frame_length *cmd_params;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_MAX_FRAME_LENGTH,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_set_max_frame_length *)cmd.params;
	cmd_params->max_frame_length = cpu_to_le16(max_frame_length);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_get_max_frame_length() - Get the maximum received frame length.
 * @mc_io:		Pointer to MC portal's I/O object
 * @cmd_flags:		Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:		Token of DPNI object
 * @max_frame_length:	Maximum received frame length (in bytes);
 *			frame is discarded if its length exceeds this value
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_get_max_frame_length(struct fsl_mc_io *mc_io,
			      uint32_t cmd_flags,
			      uint16_t token,
			      uint16_t *max_frame_length)
{
	struct mc_command cmd = { 0 };
	struct dpni_rsp_get_max_frame_length *rsp_params;
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_MAX_FRAME_LENGTH,
					  cmd_flags,
					  token);

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_get_max_frame_length *)cmd.params;
	*max_frame_length = le16_to_cpu(rsp_params->max_frame_length);

	return 0;
}

/**
 * dpni_set_multicast_promisc() - Enable/disable multicast promiscuous mode
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @en:		Set to '1' to enable; '0' to disable
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_set_multicast_promisc(struct fsl_mc_io *mc_io,
			       uint32_t cmd_flags,
			       uint16_t token,
			       int en)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_set_multicast_promisc *cmd_params;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_MCAST_PROMISC,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_set_multicast_promisc *)cmd.params;
	dpni_set_field(cmd_params->enable, ENABLE, en);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_get_multicast_promisc() - Get multicast promiscuous mode
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @en:		Returns '1' if enabled; '0' otherwise
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_get_multicast_promisc(struct fsl_mc_io *mc_io,
			       uint32_t cmd_flags,
			       uint16_t token,
			       int *en)
{
	struct mc_command cmd = { 0 };
	struct dpni_rsp_get_multicast_promisc *rsp_params;
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_MCAST_PROMISC,
					  cmd_flags,
					  token);

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_get_multicast_promisc *)cmd.params;
	*en = dpni_get_field(rsp_params->enabled, ENABLE);

	return 0;
}

/**
 * dpni_set_unicast_promisc() - Enable/disable unicast promiscuous mode
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @en:		Set to '1' to enable; '0' to disable
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_set_unicast_promisc(struct fsl_mc_io *mc_io,
			     uint32_t cmd_flags,
			     uint16_t token,
			     int en)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_set_unicast_promisc *cmd_params;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_UNICAST_PROMISC,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_set_unicast_promisc *)cmd.params;
	dpni_set_field(cmd_params->enable, ENABLE, en);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_get_unicast_promisc() - Get unicast promiscuous mode
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @en:		Returns '1' if enabled; '0' otherwise
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_get_unicast_promisc(struct fsl_mc_io *mc_io,
			     uint32_t cmd_flags,
			     uint16_t token,
			     int *en)
{
	struct mc_command cmd = { 0 };
	struct dpni_rsp_get_unicast_promisc *rsp_params;
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_UNICAST_PROMISC,
					  cmd_flags,
					  token);

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_get_unicast_promisc *)cmd.params;
	*en = dpni_get_field(rsp_params->enabled, ENABLE);

	return 0;
}

/**
 * dpni_set_primary_mac_addr() - Set the primary MAC address
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @mac_addr:	MAC address to set as primary address
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_set_primary_mac_addr(struct fsl_mc_io *mc_io,
			      uint32_t cmd_flags,
			      uint16_t token,
			      const uint8_t mac_addr[6])
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_set_primary_mac_addr *cmd_params;
	int i;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_PRIM_MAC,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_set_primary_mac_addr *)cmd.params;
	for (i = 0; i < 6; i++)
		cmd_params->mac_addr[i] = mac_addr[5 - i];

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_get_primary_mac_addr() - Get the primary MAC address
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @mac_addr:	Returned MAC address
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_get_primary_mac_addr(struct fsl_mc_io *mc_io,
			      uint32_t cmd_flags,
			      uint16_t token,
			      uint8_t mac_addr[6])
{
	struct mc_command cmd = { 0 };
	struct dpni_rsp_get_primary_mac_addr *rsp_params;
	int i, err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_PRIM_MAC,
					  cmd_flags,
					  token);

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_get_primary_mac_addr *)cmd.params;
	for (i = 0; i < 6; i++)
		mac_addr[5 - i] = rsp_params->mac_addr[i];

	return 0;
}

/**
 * dpni_add_mac_addr() - Add MAC address filter
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @mac_addr:	MAC address to add
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_add_mac_addr(struct fsl_mc_io *mc_io,
		      uint32_t cmd_flags,
		      uint16_t token,
		      const uint8_t mac_addr[6])
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_add_mac_addr *cmd_params;
	int i;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_ADD_MAC_ADDR,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_add_mac_addr *)cmd.params;
	for (i = 0; i < 6; i++)
		cmd_params->mac_addr[i] = mac_addr[5 - i];

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_remove_mac_addr() - Remove MAC address filter
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @mac_addr:	MAC address to remove
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_remove_mac_addr(struct fsl_mc_io *mc_io,
			 uint32_t cmd_flags,
			 uint16_t token,
			 const uint8_t mac_addr[6])
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_remove_mac_addr *cmd_params;
	int i;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_REMOVE_MAC_ADDR,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_remove_mac_addr *)cmd.params;
	for (i = 0; i < 6; i++)
		cmd_params->mac_addr[i] = mac_addr[5 - i];

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_clear_mac_filters() - Clear all unicast and/or multicast MAC filters
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @unicast:	Set to '1' to clear unicast addresses
 * @multicast:	Set to '1' to clear multicast addresses
 *
 * The primary MAC address is not cleared by this operation.
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_clear_mac_filters(struct fsl_mc_io *mc_io,
			   uint32_t cmd_flags,
			   uint16_t token,
			   int unicast,
			   int multicast)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_clear_mac_filters *cmd_params;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_CLR_MAC_FILTERS,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_clear_mac_filters *)cmd.params;
	dpni_set_field(cmd_params->flags, UNICAST_FILTERS, unicast);
	dpni_set_field(cmd_params->flags, MULTICAST_FILTERS, multicast);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_get_port_mac_addr() - Retrieve MAC address associated to the physical
 *			port the DPNI is attached to
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @mac_addr:	MAC address of the physical port, if any, otherwise 0
 *
 * The primary MAC address is not cleared by this operation.
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_get_port_mac_addr(struct fsl_mc_io *mc_io,
			   uint32_t cmd_flags,
			   uint16_t token,
			   uint8_t mac_addr[6])
{
	struct mc_command cmd = { 0 };
	struct dpni_rsp_get_port_mac_addr *rsp_params;
	int i, err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_PORT_MAC_ADDR,
					  cmd_flags,
					  token);

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_get_port_mac_addr *)cmd.params;
	for (i = 0; i < 6; i++)
		mac_addr[5 - i] = rsp_params->mac_addr[i];

	return 0;
}

/**
 * dpni_enable_vlan_filter() - Enable/disable VLAN filtering mode
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @en:		Set to '1' to enable; '0' to disable
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_enable_vlan_filter(struct fsl_mc_io *mc_io,
			    uint32_t cmd_flags,
			    uint16_t token,
			    int en)
{
	struct dpni_cmd_enable_vlan_filter *cmd_params;
	struct mc_command cmd = { 0 };

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_ENABLE_VLAN_FILTER,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_enable_vlan_filter *)cmd.params;
	dpni_set_field(cmd_params->en, ENABLE, en);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_add_vlan_id() - Add VLAN ID filter
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @vlan_id:	VLAN ID to add
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_add_vlan_id(struct fsl_mc_io *mc_io,
		     uint32_t cmd_flags,
		     uint16_t token,
		     uint16_t vlan_id)
{
	struct dpni_cmd_vlan_id *cmd_params;
	struct mc_command cmd = { 0 };

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_ADD_VLAN_ID,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_vlan_id *)cmd.params;
	cmd_params->vlan_id = cpu_to_le16(vlan_id);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_remove_vlan_id() - Remove VLAN ID filter
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @vlan_id:	VLAN ID to remove
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_remove_vlan_id(struct fsl_mc_io *mc_io,
			uint32_t cmd_flags,
			uint16_t token,
			uint16_t vlan_id)
{
	struct dpni_cmd_vlan_id *cmd_params;
	struct mc_command cmd = { 0 };

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_REMOVE_VLAN_ID,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_vlan_id *)cmd.params;
	cmd_params->vlan_id = cpu_to_le16(vlan_id);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_clear_vlan_filters() - Clear all VLAN filters
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_clear_vlan_filters(struct fsl_mc_io *mc_io,
			    uint32_t cmd_flags,
			    uint16_t token)
{
	struct mc_command cmd = { 0 };

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_CLR_VLAN_FILTERS,
					  cmd_flags,
					  token);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_set_rx_tc_dist() - Set Rx traffic class distribution configuration
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @tc_id:	Traffic class selection (0-7)
 * @cfg:	Traffic class distribution configuration
 *
 * warning: if 'dist_mode != DPNI_DIST_MODE_NONE', call dpkg_prepare_key_cfg()
 *			first to prepare the key_cfg_iova parameter
 *
 * Return:	'0' on Success; error code otherwise.
 */
int dpni_set_rx_tc_dist(struct fsl_mc_io *mc_io,
			uint32_t cmd_flags,
			uint16_t token,
			uint8_t tc_id,
			const struct dpni_rx_tc_dist_cfg *cfg)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_set_rx_tc_dist *cmd_params;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_RX_TC_DIST,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_set_rx_tc_dist *)cmd.params;
	cmd_params->dist_size = cpu_to_le16(cfg->dist_size);
	cmd_params->tc_id = tc_id;
	cmd_params->default_flow_id = cpu_to_le16(cfg->fs_cfg.default_flow_id);
	cmd_params->key_cfg_iova = cpu_to_le64(cfg->key_cfg_iova);
	dpni_set_field(cmd_params->flags,
		       DIST_MODE,
		       cfg->dist_mode);
	dpni_set_field(cmd_params->flags,
		       MISS_ACTION,
		       cfg->fs_cfg.miss_action);
	dpni_set_field(cmd_params->keep_hash_key,
		       KEEP_HASH_KEY,
		       cfg->fs_cfg.keep_hash_key);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_set_tx_confirmation_mode() - Tx confirmation mode
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @mode:	Tx confirmation mode
 *
 * This function is useful only when 'DPNI_OPT_TX_CONF_DISABLED' is not
 * selected at DPNI creation.
 * Calling this function with 'mode' set to DPNI_CONF_DISABLE disables all
 * transmit confirmation (including the private confirmation queues), regardless
 * of previous settings; Note that in this case, Tx error frames are still
 * enqueued to the general transmit errors queue.
 * Calling this function with 'mode' set to DPNI_CONF_SINGLE switches all
 * Tx confirmations to a shared Tx conf queue. 'index' field in dpni_get_queue
 * command will be ignored.
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_set_tx_confirmation_mode(struct fsl_mc_io *mc_io,
				  uint32_t cmd_flags,
				  uint16_t token,
				  enum dpni_confirmation_mode mode)
{
	struct dpni_tx_confirmation_mode *cmd_params;
	struct mc_command cmd = { 0 };

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_TX_CONFIRMATION_MODE,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_tx_confirmation_mode *)cmd.params;
	cmd_params->confirmation_mode = mode;

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_set_congestion_notification() - Set traffic class congestion
 *	notification configuration
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @qtype:	Type of queue - Rx, Tx and Tx confirm types are supported
 * @tc_id:	Traffic class selection (0-7)
 * @cfg:	congestion notification configuration
 *
 * Return:	'0' on Success; error code otherwise.
 */
int dpni_set_congestion_notification(struct fsl_mc_io *mc_io,
				     uint32_t cmd_flags,
				     uint16_t token,
				     enum dpni_queue_type qtype,
				     uint8_t tc_id,
			const struct dpni_congestion_notification_cfg *cfg)
{
	struct dpni_cmd_set_congestion_notification *cmd_params;
	struct mc_command cmd = { 0 };

	/* prepare command */
	cmd.header = mc_encode_cmd_header(
					DPNI_CMDID_SET_CONGESTION_NOTIFICATION,
					cmd_flags,
					token);
	cmd_params = (struct dpni_cmd_set_congestion_notification *)cmd.params;
	cmd_params->qtype = qtype;
	cmd_params->tc = tc_id;
	cmd_params->dest_id = cpu_to_le32(cfg->dest_cfg.dest_id);
	cmd_params->notification_mode = cpu_to_le16(cfg->notification_mode);
	cmd_params->dest_priority = cfg->dest_cfg.priority;
	cmd_params->message_iova = cpu_to_le64(cfg->message_iova);
	cmd_params->message_ctx = cpu_to_le64(cfg->message_ctx);
	cmd_params->threshold_entry = cpu_to_le32(cfg->threshold_entry);
	cmd_params->threshold_exit = cpu_to_le32(cfg->threshold_exit);
	dpni_set_field(cmd_params->type_units,
		       DEST_TYPE,
		       cfg->dest_cfg.dest_type);
	dpni_set_field(cmd_params->type_units,
		       CONG_UNITS,
		       cfg->units);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_get_congestion_notification() - Get traffic class congestion
 *	notification configuration
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @qtype:	Type of queue - Rx, Tx and Tx confirm types are supported
 * @tc_id:	Traffic class selection (0-7)
 * @cfg:	congestion notification configuration
 *
 * Return:	'0' on Success; error code otherwise.
 */
int dpni_get_congestion_notification(struct fsl_mc_io *mc_io,
				     uint32_t cmd_flags,
				     uint16_t token,
				     enum dpni_queue_type qtype,
				     uint8_t tc_id,
				struct dpni_congestion_notification_cfg *cfg)
{
	struct dpni_rsp_get_congestion_notification *rsp_params;
	struct dpni_cmd_get_congestion_notification *cmd_params;
	struct mc_command cmd = { 0 };
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(
					DPNI_CMDID_GET_CONGESTION_NOTIFICATION,
					cmd_flags,
					token);
	cmd_params = (struct dpni_cmd_get_congestion_notification *)cmd.params;
	cmd_params->qtype = qtype;
	cmd_params->tc = tc_id;

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	rsp_params = (struct dpni_rsp_get_congestion_notification *)cmd.params;
	cfg->units = dpni_get_field(rsp_params->type_units, CONG_UNITS);
	cfg->threshold_entry = le32_to_cpu(rsp_params->threshold_entry);
	cfg->threshold_exit = le32_to_cpu(rsp_params->threshold_exit);
	cfg->message_ctx = le64_to_cpu(rsp_params->message_ctx);
	cfg->message_iova = le64_to_cpu(rsp_params->message_iova);
	cfg->notification_mode = le16_to_cpu(rsp_params->notification_mode);
	cfg->dest_cfg.dest_id = le32_to_cpu(rsp_params->dest_id);
	cfg->dest_cfg.priority = rsp_params->dest_priority;
	cfg->dest_cfg.dest_type = dpni_get_field(rsp_params->type_units,
						 DEST_TYPE);

	return 0;
}

/**
 * dpni_get_api_version() - Get Data Path Network Interface 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 network interface API
 * @minor_ver:	Minor version of data path network interface API
 *
 * Return:  '0' on Success; Error code otherwise.
 */
int dpni_get_api_version(struct fsl_mc_io *mc_io,
			 uint32_t cmd_flags,
			 uint16_t *major_ver,
			 uint16_t *minor_ver)
{
	struct dpni_rsp_get_api_version *rsp_params;
	struct mc_command cmd = { 0 };
	int err;

	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_API_VERSION,
					cmd_flags,
					0);

	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	rsp_params = (struct dpni_rsp_get_api_version *)cmd.params;
	*major_ver = le16_to_cpu(rsp_params->major);
	*minor_ver = le16_to_cpu(rsp_params->minor);

	return 0;
}

/**
 * dpni_set_queue() - Set queue parameters
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @qtype:	Type of queue - all queue types are supported, although
 *		the command is ignored for Tx
 * @tc:		Traffic class, in range 0 to NUM_TCS - 1
 * @index:	Selects the specific queue out of the set allocated for the
 *		same TC. Value must be in range 0 to NUM_QUEUES - 1
 * @options:	A combination of DPNI_QUEUE_OPT_ values that control what
 *		configuration options are set on the queue
 * @queue:	Queue structure
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_set_queue(struct fsl_mc_io *mc_io,
		   uint32_t cmd_flags,
		   uint16_t token,
		   enum dpni_queue_type qtype,
		   uint8_t tc,
		   uint8_t index,
		   uint8_t options,
		   const struct dpni_queue *queue)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_set_queue *cmd_params;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_QUEUE,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_set_queue *)cmd.params;
	cmd_params->qtype = qtype;
	cmd_params->tc = tc;
	cmd_params->index = index;
	cmd_params->options = options;
	cmd_params->dest_id = cpu_to_le32(queue->destination.id);
	cmd_params->dest_prio = queue->destination.priority;
	dpni_set_field(cmd_params->flags, DEST_TYPE, queue->destination.type);
	dpni_set_field(cmd_params->flags, STASH_CTRL, queue->flc.stash_control);
	dpni_set_field(cmd_params->flags, HOLD_ACTIVE,
		       queue->destination.hold_active);
	cmd_params->flc = cpu_to_le64(queue->flc.value);
	cmd_params->user_context = cpu_to_le64(queue->user_context);

	/* send command to mc */
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_get_queue() - Get queue parameters
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @qtype:	Type of queue - all queue types are supported
 * @tc:		Traffic class, in range 0 to NUM_TCS - 1
 * @index:	Selects the specific queue out of the set allocated for the
 *		same TC. Value must be in range 0 to NUM_QUEUES - 1
 * @queue:	Queue configuration structure
 * @qid:	Queue identification
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_get_queue(struct fsl_mc_io *mc_io,
		   uint32_t cmd_flags,
		   uint16_t token,
		   enum dpni_queue_type qtype,
		   uint8_t tc,
		   uint8_t index,
		   struct dpni_queue *queue,
		   struct dpni_queue_id *qid)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_get_queue *cmd_params;
	struct dpni_rsp_get_queue *rsp_params;
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_QUEUE,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_get_queue *)cmd.params;
	cmd_params->qtype = qtype;
	cmd_params->tc = tc;
	cmd_params->index = index;

	/* send command to mc */
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_get_queue *)cmd.params;
	queue->destination.id = le32_to_cpu(rsp_params->dest_id);
	queue->destination.priority = rsp_params->dest_prio;
	queue->destination.type = dpni_get_field(rsp_params->flags,
						     DEST_TYPE);
	queue->flc.stash_control = dpni_get_field(rsp_params->flags,
						  STASH_CTRL);
	queue->destination.hold_active = dpni_get_field(rsp_params->flags,
							HOLD_ACTIVE);
	queue->flc.value = le64_to_cpu(rsp_params->flc);
	queue->user_context = le64_to_cpu(rsp_params->user_context);
	qid->fqid = le32_to_cpu(rsp_params->fqid);
	qid->qdbin = le16_to_cpu(rsp_params->qdbin);

	return 0;
}

/**
 * dpni_get_statistics() - Get DPNI statistics
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @page:	Selects the statistics page to retrieve, see
 *		DPNI_GET_STATISTICS output. Pages are numbered 0 to 2.
 * @param:  Custom parameter for some pages used to select
 *		a certain statistic source, for example the TC.
 * @stat:	Structure containing the statistics
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_get_statistics(struct fsl_mc_io *mc_io,
			uint32_t cmd_flags,
			uint16_t token,
			uint8_t page,
			uint8_t param,
			union dpni_statistics *stat)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_get_statistics *cmd_params;
	struct dpni_rsp_get_statistics *rsp_params;
	int i, err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_STATISTICS,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_get_statistics *)cmd.params;
	cmd_params->page_number = page;
	cmd_params->param = param;

	/* send command to mc */
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_get_statistics *)cmd.params;
	for (i = 0; i < DPNI_STATISTICS_CNT; i++)
		stat->raw.counter[i] = le64_to_cpu(rsp_params->counter[i]);

	return 0;
}

/**
 * dpni_reset_statistics() - Clears DPNI statistics
 * @mc_io:		Pointer to MC portal's I/O object
 * @cmd_flags:		Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:		Token of DPNI object
 *
 * Return:  '0' on Success; Error code otherwise.
 */
int dpni_reset_statistics(struct fsl_mc_io *mc_io,
			  uint32_t cmd_flags,
		     uint16_t token)
{
	struct mc_command cmd = { 0 };

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_RESET_STATISTICS,
					  cmd_flags,
					  token);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_set_taildrop() - Set taildrop per queue or TC
 *
 * Setting a per-TC taildrop (cg_point = DPNI_CP_GROUP) will reset any current
 * congestion notification or early drop (WRED) configuration previously applied
 * to the same TC.
 *
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @cg_point:	Congestion point, DPNI_CP_QUEUE is only supported in
 *		combination with DPNI_QUEUE_RX.
 * @q_type:	Queue type, can be DPNI_QUEUE_RX or DPNI_QUEUE_TX.
 * @tc:		Traffic class to apply this taildrop to
 * @q_index:	Index of the queue if the DPNI supports multiple queues for
 *		traffic distribution.
 *		Ignored if CONGESTION_POINT is not DPNI_CP_QUEUE.
 * @taildrop:	Taildrop structure
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_set_taildrop(struct fsl_mc_io *mc_io,
		      uint32_t cmd_flags,
		      uint16_t token,
		      enum dpni_congestion_point cg_point,
		      enum dpni_queue_type qtype,
		      uint8_t tc,
		      uint8_t index,
		      struct dpni_taildrop *taildrop)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_set_taildrop *cmd_params;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_TAILDROP,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_set_taildrop *)cmd.params;
	cmd_params->congestion_point = cg_point;
	cmd_params->qtype = qtype;
	cmd_params->tc = tc;
	cmd_params->index = index;
	cmd_params->units = taildrop->units;
	cmd_params->threshold = cpu_to_le32(taildrop->threshold);
	dpni_set_field(cmd_params->enable_oal_lo, ENABLE, taildrop->enable);
	dpni_set_field(cmd_params->enable_oal_lo, OAL_LO, taildrop->oal);
	dpni_set_field(cmd_params->oal_hi,
		       OAL_HI,
		       taildrop->oal >> DPNI_OAL_LO_SIZE);

	/* send command to mc */
	return mc_send_command(mc_io, &cmd);
}

/**
 * dpni_get_taildrop() - Get taildrop information
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPNI object
 * @cg_point:	Congestion point
 * @q_type:	Queue type on which the taildrop is configured.
 *		Only Rx queues are supported for now
 * @tc:		Traffic class to apply this taildrop to
 * @q_index:	Index of the queue if the DPNI supports multiple queues for
 *		traffic distribution. Ignored if CONGESTION_POINT is not 0.
 * @taildrop:	Taildrop structure
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpni_get_taildrop(struct fsl_mc_io *mc_io,
		      uint32_t cmd_flags,
		      uint16_t token,
		      enum dpni_congestion_point cg_point,
		      enum dpni_queue_type qtype,
		      uint8_t tc,
		      uint8_t index,
		      struct dpni_taildrop *taildrop)
{
	struct mc_command cmd = { 0 };
	struct dpni_cmd_get_taildrop *cmd_params;
	struct dpni_rsp_get_taildrop *rsp_params;
	uint8_t oal_lo, oal_hi;
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_TAILDROP,
					  cmd_flags,
					  token);
	cmd_params = (struct dpni_cmd_get_taildrop *)cmd.params;
	cmd_params->congestion_point = cg_point;
	cmd_params->qtype = qtype;
	cmd_params->tc = tc;
	cmd_params->index = index;

	/* send command to mc */
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	rsp_params = (struct dpni_rsp_get_taildrop *)cmd.params;
	taildrop->enable = dpni_get_field(rsp_params->enable_oal_lo, ENABLE);
	taildrop->units = rsp_params->units;
	taildrop->threshold = le32_to_cpu(rsp_params->threshold);
	oal_lo = dpni_get_field(rsp_params->enable_oal_lo, OAL_LO);
	oal_hi = dpni_get_field(rsp_params->oal_hi, OAL_HI);
	taildrop->oal = oal_hi << DPNI_OAL_LO_SIZE | oal_lo;

	/* Fill the first 4 bits, 'oal' is a 2's complement value of 12 bits */
	if (taildrop->oal >= 0x0800)
		taildrop->oal |= 0xF000;

	return 0;
}