text: /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
   *
   * Copyright 2013-2016 Freescale Semiconductor Inc.
   * Copyright 2016 NXP
   *
   */
  #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->num_rx_tcs = cfg->num_rx_tcs;
  	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 < cmd_params->num_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_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 DPNI 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 dpni_set_irq_enable(struct fsl_mc_io *mc_io,
  			uint32_t cmd_flags,
  			uint16_t token,
  			uint8_t irq_index,
  			uint8_t en)
  {
  	struct mc_command cmd = { 0 };
  	struct dpni_cmd_set_irq_enable *cmd_params;
  
  	/* prepare command */
  	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_IRQ_ENABLE,
  					  cmd_flags,
  					  token);
  	cmd_params = (struct dpni_cmd_set_irq_enable *)cmd.params;
  	dpni_set_field(cmd_params->enable, ENABLE, en);
  	cmd_params->irq_index = irq_index;
  
  	/* send command to mc*/
  	return mc_send_command(mc_io, &cmd);
  }
  
  /**
   * dpni_get_irq_enable() - Get 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 DPNI object
   * @irq_index:	The interrupt index to configure
   * @en:		Returned interrupt state - enable = 1, disable = 0
   *
   * Return:	'0' on Success; Error code otherwise.
   */
  int dpni_get_irq_enable(struct fsl_mc_io *mc_io,
  			uint32_t cmd_flags,
  			uint16_t token,
  			uint8_t irq_index,
  			uint8_t *en)
  {
  	struct mc_command cmd = { 0 };
  	struct dpni_cmd_get_irq_enable *cmd_params;
  	struct dpni_rsp_get_irq_enable *rsp_params;
  
  	int err;
  
  	/* prepare command */
  	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_IRQ_ENABLE,
  					  cmd_flags,
  					  token);
  	cmd_params = (struct dpni_cmd_get_irq_enable *)cmd.params;
  	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 dpni_rsp_get_irq_enable *)cmd.params;
  	*en = dpni_get_field(rsp_params->enabled, ENABLE);
  
  	return 0;
  }
  
  /**
   * dpni_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 DPNI 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 dpni_set_irq_mask(struct fsl_mc_io *mc_io,
  		      uint32_t cmd_flags,
  		      uint16_t token,
  		      uint8_t irq_index,
  		      uint32_t mask)
  {
  	struct mc_command cmd = { 0 };
  	struct dpni_cmd_set_irq_mask *cmd_params;
  
  	/* prepare command */
  	cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_IRQ_MASK,
  					  cmd_flags,
  					  token);
  	cmd_params = (struct dpni_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);
  }
  
  /**
   * dpni_get_irq_mask() - Get 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 DPNI object
   * @irq_index:	The interrupt index to configure
   * @mask:	Returned event mask to trigger interrupt
   *
   * 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 dpni_get_irq_mask(struct fsl_mc_io *mc_io,
  		      uint32_t cmd_flags,
  		      uint16_t token,
  		      uint8_t irq_index,
  		      uint32_t *mask)
  {
  	struct mc_command cmd = { 0 };
  	struct dpni_cmd_get_irq_mask *cmd_params;
  	struct dpni_rsp_get_irq_mask *rsp_params;
  	int err;
  
  	/* prepare command */
  	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_IRQ_MASK,
  					  cmd_flags,
  					  token);
  	cmd_params = (struct dpni_cmd_get_irq_mask *)cmd.params;
  	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 dpni_rsp_get_irq_mask *)cmd.params;
  	*mask = le32_to_cpu(rsp_params->mask);
  
  	return 0;
  }
  
  /**
   * dpni_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 DPNI 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 dpni_get_irq_status(struct fsl_mc_io *mc_io,
  			uint32_t cmd_flags,
  			uint16_t token,
  			uint8_t irq_index,
  			uint32_t *status)
  {
  	struct mc_command cmd = { 0 };
  	struct dpni_cmd_get_irq_status *cmd_params;
  	struct dpni_rsp_get_irq_status *rsp_params;
  	int err;
  
  	/* prepare command */
  	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_IRQ_STATUS,
  					  cmd_flags,
  					  token);
  	cmd_params = (struct dpni_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 dpni_rsp_get_irq_status *)cmd.params;
  	*status = le32_to_cpu(rsp_params->status);
  
  	return 0;
  }
  
  /**
   * dpni_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 DPNI 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 dpni_clear_irq_status(struct fsl_mc_io *mc_io,
  			  uint32_t cmd_flags,
  			  uint16_t token,
  			  uint8_t irq_index,
  			  uint32_t status)
  {
  	struct mc_command cmd = { 0 };
  	struct dpni_cmd_clear_irq_status *cmd_params;
  
  	/* prepare command */
  	cmd.header = mc_encode_cmd_header(DPNI_CMDID_CLEAR_IRQ_STATUS,
  					  cmd_flags,
  					  token);
  	cmd_params = (struct dpni_cmd_clear_irq_status *)cmd.params;
  	cmd_params->irq_index = irq_index;
  	cmd_params->status = cpu_to_le32(status);
  
  	/* 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 =
  				(int)dpni_get_field(rsp_params->flags, PASS_TS);
  	layout->pass_parser_result =
  				(int)dpni_get_field(rsp_params->flags, PASS_PR);
  	layout->pass_frame_status =
  				(int)dpni_get_field(rsp_params->flags, PASS_FS);
  	layout->pass_sw_opaque =
  			(int)dpni_get_field(rsp_params->flags, PASS_SWO);
  	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((uint16_t)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);
  	dpni_set_field(cmd_params->flags, PASS_SWO, layout->pass_sw_opaque);
  	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);
  	cmd_params->advertising = cpu_to_le64(cfg->advertising);
  
  	/* 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->state_valid = dpni_get_field(rsp_params->flags, STATE_VALID);
  	state->rate = le32_to_cpu(rsp_params->rate);
  	state->options = le64_to_cpu(rsp_params->options);
  	state->supported = le64_to_cpu(rsp_params->supported);
  	state->advertising = le64_to_cpu(rsp_params->advertising);
  
  	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);
  	dpni_set_field(cmd_params->keep_hash_key,
  		       KEEP_ENTRIES,
  		       cfg->fs_cfg.keep_entries);
  
  	/* 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 3.
   * @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;
  }
  
  /**
   * dpni_set_opr() - Set Order Restoration 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:		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:	Configuration mode options
   *			can be OPR_OPT_CREATE or OPR_OPT_RETIRE
   * @cfg:	Configuration options for the OPR
   *
   * Return:	'0' on Success; Error code otherwise.
   */
  int dpni_set_opr(struct fsl_mc_io *mc_io,
  		 uint32_t cmd_flags,
  		 uint16_t token,
  		 uint8_t tc,
  		 uint8_t index,
  		 uint8_t options,
  		 struct opr_cfg *cfg)
  {
  	struct dpni_cmd_set_opr *cmd_params;
  	struct mc_command cmd = { 0 };
  
  	/* prepare command */
  	cmd.header = mc_encode_cmd_header(
  			DPNI_CMDID_SET_OPR,
  			cmd_flags,
  			token);
  	cmd_params = (struct dpni_cmd_set_opr *)cmd.params;
  	cmd_params->tc_id = tc;
  	cmd_params->index = index;
  	cmd_params->options = options;
  	cmd_params->oloe = cfg->oloe;
  	cmd_params->oeane = cfg->oeane;
  	cmd_params->olws = cfg->olws;
  	cmd_params->oa = cfg->oa;
  	cmd_params->oprrws = cfg->oprrws;
  
  	/* send command to mc*/
  	return mc_send_command(mc_io, &cmd);
  }
  
  /**
   * dpni_get_opr() - Retrieve Order Restoration config and query.
   * @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:		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
   * @cfg:	Returned OPR configuration
   * @qry:	Returned OPR query
   *
   * Return:	'0' on Success; Error code otherwise.
   */
  int dpni_get_opr(struct fsl_mc_io *mc_io,
  		 uint32_t cmd_flags,
  		 uint16_t token,
  		 uint8_t tc,
  		 uint8_t index,
  		 struct opr_cfg *cfg,
  		 struct opr_qry *qry)
  {
  	struct dpni_rsp_get_opr *rsp_params;
  	struct dpni_cmd_get_opr *cmd_params;
  	struct mc_command cmd = { 0 };
  	int err;
  
  	/* prepare command */
  	cmd.header = mc_encode_cmd_header(DPNI_CMDID_GET_OPR,
  					  cmd_flags,
  					  token);
  	cmd_params = (struct dpni_cmd_get_opr *)cmd.params;
  	cmd_params->index = index;
  	cmd_params->tc_id = tc;
  
  	/* send command to mc*/
  	err = mc_send_command(mc_io, &cmd);
  	if (err)
  		return err;
  
  	/* retrieve response parameters */
  	rsp_params = (struct dpni_rsp_get_opr *)cmd.params;
  	cfg->oloe = rsp_params->oloe;
  	cfg->oeane = rsp_params->oeane;
  	cfg->olws = rsp_params->olws;
  	cfg->oa = rsp_params->oa;
  	cfg->oprrws = rsp_params->oprrws;
  	qry->rip = dpni_get_field(rsp_params->flags, RIP);
  	qry->enable = dpni_get_field(rsp_params->flags, OPR_ENABLE);
  	qry->nesn = le16_to_cpu(rsp_params->nesn);
  	qry->ndsn = le16_to_cpu(rsp_params->ndsn);
  	qry->ea_tseq = le16_to_cpu(rsp_params->ea_tseq);
  	qry->tseq_nlis = dpni_get_field(rsp_params->tseq_nlis, TSEQ_NLIS);
  	qry->ea_hseq = le16_to_cpu(rsp_params->ea_hseq);
  	qry->hseq_nlis = dpni_get_field(rsp_params->hseq_nlis, HSEQ_NLIS);
  	qry->ea_hptr = le16_to_cpu(rsp_params->ea_hptr);
  	qry->ea_tptr = le16_to_cpu(rsp_params->ea_tptr);
  	qry->opr_vid = le16_to_cpu(rsp_params->opr_vid);
  	qry->opr_id = le16_to_cpu(rsp_params->opr_id);
  
  	return 0;
  }
  