/*
 * Copyright 2013-2016 Freescale Semiconductor Inc.
 *
 * 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.
 *
 * 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 <linux/kernel.h>
#include "../include/mc.h"
#include "dprc.h"

#include "dprc-cmd.h"

/**
 * dprc_open() - Open DPRC object for use
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @container_id: Container ID to open
 * @token:      Returned token of DPRC object
 *
 * Return:      '0' on Success; Error code otherwise.
 *
 * @warning     Required before any operation on the object.
 */
int dprc_open(struct fsl_mc_io *mc_io,
              u32 cmd_flags,
              int container_id,
              u16 *token)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_open *cmd_params;
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_OPEN, cmd_flags,
                                          0);
        cmd_params = (struct dprc_cmd_open *)cmd.params;
        cmd_params->container_id = cpu_to_le32(container_id);

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

        /* retrieve response parameters */
        *token = mc_cmd_hdr_read_token(&cmd);

        return 0;
}
EXPORT_SYMBOL(dprc_open);

/**
 * dprc_close() - Close the control session of the object
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 *
 * After this function is called, no further operations are
 * allowed on the object without opening a new control session.
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_close(struct fsl_mc_io *mc_io,
               u32 cmd_flags,
               u16 token)
{
        struct mc_command cmd = { 0 };

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

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

/**
 * dprc_get_irq() - Get IRQ information from the DPRC.
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 * @irq_index:  The interrupt index to configure
 * @type:       Interrupt type: 0 represents message interrupt
 *              type (both irq_addr and irq_val are valid)
 * @irq_cfg:    IRQ attributes
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_get_irq(struct fsl_mc_io *mc_io,
                 u32 cmd_flags,
                 u16 token,
                 u8 irq_index,
                 int *type,
                 struct dprc_irq_cfg *irq_cfg)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_get_irq *cmd_params;
        struct dprc_rsp_get_irq *rsp_params;
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_IRQ,
                                          cmd_flags,
                                          token);
        cmd_params = (struct dprc_cmd_get_irq *)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 dprc_rsp_get_irq *)cmd.params;
        irq_cfg->val = le32_to_cpu(rsp_params->irq_val);
        irq_cfg->paddr = le64_to_cpu(rsp_params->irq_addr);
        irq_cfg->irq_num = le32_to_cpu(rsp_params->irq_num);
        *type = le32_to_cpu(rsp_params->type);

        return 0;
}

/**
 * dprc_set_irq() - Set IRQ information for the DPRC to trigger an interrupt.
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 * @irq_index:  Identifies the interrupt index to configure
 * @irq_cfg:    IRQ configuration
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_set_irq(struct fsl_mc_io *mc_io,
                 u32 cmd_flags,
                 u16 token,
                 u8 irq_index,
                 struct dprc_irq_cfg *irq_cfg)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_set_irq *cmd_params;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ,
                                          cmd_flags,
                                          token);
        cmd_params = (struct dprc_cmd_set_irq *)cmd.params;
        cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
        cmd_params->irq_index = irq_index;
        cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
        cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);

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

/**
 * dprc_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 DPRC object
 * @irq_index:  The interrupt index to configure
 * @en:         Returned interrupt state - enable = 1, disable = 0
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_get_irq_enable(struct fsl_mc_io *mc_io,
                        u32 cmd_flags,
                        u16 token,
                        u8 irq_index,
                        u8 *en)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_get_irq_enable *cmd_params;
        struct dprc_rsp_get_irq_enable *rsp_params;
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_IRQ_ENABLE,
                                          cmd_flags, token);
        cmd_params = (struct dprc_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 dprc_rsp_get_irq_enable *)cmd.params;
        *en = rsp_params->enabled & DPRC_ENABLE;

        return 0;
}

/**
 * dprc_set_irq_enable() - Set overall interrupt state.
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 * @irq_index:  The interrupt index to configure
 * @en:         Interrupt state - enable = 1, disable = 0
 *
 * Allows GPP software to control when interrupts are generated.
 * Each interrupt can have up to 32 causes.  The enable/disable control's the
 * overall interrupt state. if the interrupt is disabled no causes will cause
 * an interrupt.
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_set_irq_enable(struct fsl_mc_io *mc_io,
                        u32 cmd_flags,
                        u16 token,
                        u8 irq_index,
                        u8 en)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_set_irq_enable *cmd_params;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ_ENABLE,
                                          cmd_flags, token);
        cmd_params = (struct dprc_cmd_set_irq_enable *)cmd.params;
        cmd_params->enable = en & DPRC_ENABLE;
        cmd_params->irq_index = irq_index;

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

/**
 * dprc_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 DPRC 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 dprc_get_irq_mask(struct fsl_mc_io *mc_io,
                      u32 cmd_flags,
                      u16 token,
                      u8 irq_index,
                      u32 *mask)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_get_irq_mask *cmd_params;
        struct dprc_rsp_get_irq_mask *rsp_params;
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_IRQ_MASK,
                                          cmd_flags, token);
        cmd_params = (struct dprc_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 dprc_rsp_get_irq_mask *)cmd.params;
        *mask = le32_to_cpu(rsp_params->mask);

        return 0;
}

/**
 * dprc_set_irq_mask() - Set interrupt mask.
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 * @irq_index:  The interrupt index to configure
 * @mask:       event mask to trigger interrupt;
 *                      each bit:
 *                              0 = ignore event
 *                              1 = consider event for asserting irq
 *
 * Every interrupt can have up to 32 causes and the interrupt model supports
 * masking/unmasking each cause independently
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_set_irq_mask(struct fsl_mc_io *mc_io,
                      u32 cmd_flags,
                      u16 token,
                      u8 irq_index,
                      u32 mask)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_set_irq_mask *cmd_params;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_IRQ_MASK,
                                          cmd_flags, token);
        cmd_params = (struct dprc_cmd_set_irq_mask *)cmd.params;
        cmd_params->mask = cpu_to_le32(mask);
        cmd_params->irq_index = irq_index;

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

/**
 * dprc_get_irq_status() - Get the current status of any pending interrupts.
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 * @irq_index:  The interrupt index to configure
 * @status:     Returned interrupts status - one bit per cause:
 *                      0 = no interrupt pending
 *                      1 = interrupt pending
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_get_irq_status(struct fsl_mc_io *mc_io,
                        u32 cmd_flags,
                        u16 token,
                        u8 irq_index,
                        u32 *status)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_get_irq_status *cmd_params;
        struct dprc_rsp_get_irq_status *rsp_params;
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_IRQ_STATUS,
                                          cmd_flags, token);
        cmd_params = (struct dprc_cmd_get_irq_status *)cmd.params;
        cmd_params->status = cpu_to_le32(*status);
        cmd_params->irq_index = irq_index;

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

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

        return 0;
}

/**
 * dprc_clear_irq_status() - Clear a pending interrupt's status
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 * @irq_index:  The interrupt index to configure
 * @status:     bits to clear (W1C) - one bit per cause:
 *                                      0 = don't change
 *                                      1 = clear status bit
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_clear_irq_status(struct fsl_mc_io *mc_io,
                          u32 cmd_flags,
                          u16 token,
                          u8 irq_index,
                          u32 status)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_clear_irq_status *cmd_params;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_CLEAR_IRQ_STATUS,
                                          cmd_flags, token);
        cmd_params = (struct dprc_cmd_clear_irq_status *)cmd.params;
        cmd_params->status = cpu_to_le32(status);
        cmd_params->irq_index = irq_index;

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

/**
 * dprc_get_attributes() - Obtains container attributes
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 * @attributes  Returned container attributes
 *
 * Return:     '0' on Success; Error code otherwise.
 */
int dprc_get_attributes(struct fsl_mc_io *mc_io,
                        u32 cmd_flags,
                        u16 token,
                        struct dprc_attributes *attr)
{
        struct mc_command cmd = { 0 };
        struct dprc_rsp_get_attributes *rsp_params;
        int err;

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

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

        /* retrieve response parameters */
        rsp_params = (struct dprc_rsp_get_attributes *)cmd.params;
        attr->container_id = le32_to_cpu(rsp_params->container_id);
        attr->icid = le16_to_cpu(rsp_params->icid);
        attr->options = le32_to_cpu(rsp_params->options);
        attr->portal_id = le32_to_cpu(rsp_params->portal_id);

        return 0;
}

/**
 * dprc_get_obj_count() - Obtains the number of objects in the DPRC
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 * @obj_count:  Number of objects assigned to the DPRC
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_get_obj_count(struct fsl_mc_io *mc_io,
                       u32 cmd_flags,
                       u16 token,
                       int *obj_count)
{
        struct mc_command cmd = { 0 };
        struct dprc_rsp_get_obj_count *rsp_params;
        int err;

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

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

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

        return 0;
}
EXPORT_SYMBOL(dprc_get_obj_count);

/**
 * dprc_get_obj() - Get general information on an object
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 * @obj_index:  Index of the object to be queried (< obj_count)
 * @obj_desc:   Returns the requested object descriptor
 *
 * The object descriptors are retrieved one by one by incrementing
 * obj_index up to (not including) the value of obj_count returned
 * from dprc_get_obj_count(). dprc_get_obj_count() must
 * be called prior to dprc_get_obj().
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_get_obj(struct fsl_mc_io *mc_io,
                 u32 cmd_flags,
                 u16 token,
                 int obj_index,
                 struct fsl_mc_obj_desc *obj_desc)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_get_obj *cmd_params;
        struct dprc_rsp_get_obj *rsp_params;
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ,
                                          cmd_flags,
                                          token);
        cmd_params = (struct dprc_cmd_get_obj *)cmd.params;
        cmd_params->obj_index = cpu_to_le32(obj_index);

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

        /* retrieve response parameters */
        rsp_params = (struct dprc_rsp_get_obj *)cmd.params;
        obj_desc->id = le32_to_cpu(rsp_params->id);
        obj_desc->vendor = le16_to_cpu(rsp_params->vendor);
        obj_desc->irq_count = rsp_params->irq_count;
        obj_desc->region_count = rsp_params->region_count;
        obj_desc->state = le32_to_cpu(rsp_params->state);
        obj_desc->ver_major = le16_to_cpu(rsp_params->version_major);
        obj_desc->ver_minor = le16_to_cpu(rsp_params->version_minor);
        obj_desc->flags = le16_to_cpu(rsp_params->flags);
        strncpy(obj_desc->type, rsp_params->type, 16);
        obj_desc->type[15] = '\0';
        strncpy(obj_desc->label, rsp_params->label, 16);
        obj_desc->label[15] = '\0';
        return 0;
}
EXPORT_SYMBOL(dprc_get_obj);

/**
 * dprc_set_obj_irq() - Set IRQ information for object to trigger an interrupt.
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 * @obj_type:   Type of the object to set its IRQ
 * @obj_id:     ID of the object to set its IRQ
 * @irq_index:  The interrupt index to configure
 * @irq_cfg:    IRQ configuration
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_set_obj_irq(struct fsl_mc_io *mc_io,
                     u32 cmd_flags,
                     u16 token,
                     char *obj_type,
                     int obj_id,
                     u8 irq_index,
                     struct dprc_irq_cfg *irq_cfg)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_set_obj_irq *cmd_params;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_SET_OBJ_IRQ,
                                          cmd_flags,
                                          token);
        cmd_params = (struct dprc_cmd_set_obj_irq *)cmd.params;
        cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
        cmd_params->irq_index = irq_index;
        cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
        cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);
        cmd_params->obj_id = cpu_to_le32(obj_id);
        strncpy(cmd_params->obj_type, obj_type, 16);
        cmd_params->obj_type[15] = '\0';

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

/**
 * dprc_get_obj_irq() - Get IRQ information from object.
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 * @obj_type:   Type od the object to get its IRQ
 * @obj_id:     ID of the object to get its IRQ
 * @irq_index:  The interrupt index to configure
 * @type:       Interrupt type: 0 represents message interrupt
 *              type (both irq_addr and irq_val are valid)
 * @irq_cfg:    The returned IRQ attributes
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_get_obj_irq(struct fsl_mc_io *mc_io,
                     u32 cmd_flags,
                     u16 token,
                     char *obj_type,
                     int obj_id,
                     u8 irq_index,
                     int *type,
                     struct dprc_irq_cfg *irq_cfg)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_get_obj_irq *cmd_params;
        struct dprc_rsp_get_obj_irq *rsp_params;
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_IRQ,
                                          cmd_flags,
                                          token);
        cmd_params = (struct dprc_cmd_get_obj_irq *)cmd.params;
        cmd_params->obj_id = cpu_to_le32(obj_id);
        cmd_params->irq_index = irq_index;
        strncpy(cmd_params->obj_type, obj_type, 16);
        cmd_params->obj_type[15] = '\0';

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

        /* retrieve response parameters */
        rsp_params = (struct dprc_rsp_get_obj_irq *)cmd.params;
        irq_cfg->val = le32_to_cpu(rsp_params->irq_val);
        irq_cfg->paddr = le64_to_cpu(rsp_params->irq_addr);
        irq_cfg->irq_num = le32_to_cpu(rsp_params->irq_num);
        *type = le32_to_cpu(rsp_params->type);

        return 0;
}
EXPORT_SYMBOL(dprc_get_obj_irq);

/**
 * dprc_get_res_count() - Obtains the number of free resources that are assigned
 *              to this container, by pool type
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 * @type:       pool type
 * @res_count:  Returned number of free resources of the given
 *                      resource type that are assigned to this DPRC
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_get_res_count(struct fsl_mc_io *mc_io,
                       u32 cmd_flags,
                       u16 token,
                       char *type,
                       int *res_count)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_get_res_count *cmd_params;
        struct dprc_rsp_get_res_count *rsp_params;
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_RES_COUNT,
                                          cmd_flags, token);
        cmd_params = (struct dprc_cmd_get_res_count *)cmd.params;
        strncpy(cmd_params->type, type, 16);
        cmd_params->type[15] = '\0';

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

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

        return 0;
}
EXPORT_SYMBOL(dprc_get_res_count);

/**
 * dprc_get_obj_region() - Get region information for a specified object.
 * @mc_io:      Pointer to MC portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:      Token of DPRC object
 * @obj_type;   Object type as returned in dprc_get_obj()
 * @obj_id:     Unique object instance as returned in dprc_get_obj()
 * @region_index: The specific region to query
 * @region_desc:  Returns the requested region descriptor
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_get_obj_region(struct fsl_mc_io *mc_io,
                        u32 cmd_flags,
                        u16 token,
                        char *obj_type,
                        int obj_id,
                        u8 region_index,
                        struct dprc_region_desc *region_desc)
{
        struct mc_command cmd = { 0 };
        struct dprc_cmd_get_obj_region *cmd_params;
        struct dprc_rsp_get_obj_region *rsp_params;
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_OBJ_REG,
                                          cmd_flags, token);
        cmd_params = (struct dprc_cmd_get_obj_region *)cmd.params;
        cmd_params->obj_id = cpu_to_le32(obj_id);
        cmd_params->region_index = region_index;
        strncpy(cmd_params->obj_type, obj_type, 16);
        cmd_params->obj_type[15] = '\0';

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

        /* retrieve response parameters */
        rsp_params = (struct dprc_rsp_get_obj_region *)cmd.params;
        region_desc->base_offset = le64_to_cpu(rsp_params->base_addr);
        region_desc->size = le32_to_cpu(rsp_params->size);

        return 0;
}
EXPORT_SYMBOL(dprc_get_obj_region);

/**
 * dprc_get_api_version - Get Data Path Resource Container API version
 * @mc_io:      Pointer to Mc portal's I/O object
 * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 * @major_ver:  Major version of Data Path Resource Container API
 * @minor_ver:  Minor version of Data Path Resource Container API
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_get_api_version(struct fsl_mc_io *mc_io,
                         u32 cmd_flags,
                         u16 *major_ver,
                         u16 *minor_ver)
{
        struct mc_command cmd = { 0 };
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_API_VERSION,
                                          cmd_flags, 0);

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

        /* retrieve response parameters */
        mc_cmd_read_api_version(&cmd, major_ver, minor_ver);

        return 0;
}

/**
 * dprc_get_container_id - Get container ID associated with a given portal.
 * @mc_io:              Pointer to Mc portal's I/O object
 * @cmd_flags:          Command flags; one or more of 'MC_CMD_FLAG_'
 * @container_id:       Requested container id
 *
 * Return:      '0' on Success; Error code otherwise.
 */
int dprc_get_container_id(struct fsl_mc_io *mc_io,
                          u32 cmd_flags,
                          int *container_id)
{
        struct mc_command cmd = { 0 };
        int err;

        /* prepare command */
        cmd.header = mc_encode_cmd_header(DPRC_CMDID_GET_CONT_ID,
                                          cmd_flags,
                                          0);

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

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

        return 0;
}