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/*
* 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 "../include/dpbp.h"
#include "dpbp-cmd.h"
/**
* dpbp_open() - Open a control session for the specified object.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @dpbp_id: DPBP unique ID
* @token: Returned token; use in subsequent API calls
*
* This function can be used to open a control session for an
* already created object; an object may have been declared in
* the DPL or by calling the dpbp_create function.
* This function returns a unique authentication token,
* associated with the specific object ID and the specific MC
* portal; this token must be used in all subsequent commands for
* this specific object
*
* Return: '0' on Success; Error code otherwise.
*/
int dpbp_open(struct fsl_mc_io *mc_io,
u32 cmd_flags,
int dpbp_id,
u16 *token)
{
struct mc_command cmd = { 0 };
struct dpbp_cmd_open *cmd_params;
int err;
/* prepare command */
cmd.header = mc_encode_cmd_header(DPBP_CMDID_OPEN,
cmd_flags, 0);
cmd_params = (struct dpbp_cmd_open *)cmd.params;
cmd_params->dpbp_id = cpu_to_le32(dpbp_id);
/* send command to mc*/
err = mc_send_command(mc_io, &cmd);
if (err)
return err;
/* retrieve response parameters */
*token = mc_cmd_hdr_read_token(&cmd);
return err;
}
EXPORT_SYMBOL(dpbp_open);
/**
* dpbp_close() - Close the control session of the object
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPBP object
*
* After this function is called, no further operations are
* allowed on the object without opening a new control session.
*
* Return: '0' on Success; Error code otherwise.
*/
int dpbp_close(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPBP_CMDID_CLOSE, cmd_flags,
token);
/* send command to mc*/
return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL(dpbp_close);
/**
* dpbp_enable() - Enable the DPBP.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPBP object
*
* Return: '0' on Success; Error code otherwise.
*/
int dpbp_enable(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPBP_CMDID_ENABLE, cmd_flags,
token);
/* send command to mc*/
return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL(dpbp_enable);
/**
* dpbp_disable() - Disable the DPBP.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPBP object
*
* Return: '0' on Success; Error code otherwise.
*/
int dpbp_disable(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPBP_CMDID_DISABLE,
cmd_flags, token);
/* send command to mc*/
return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL(dpbp_disable);
/**
* dpbp_is_enabled() - Check if the DPBP 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 DPBP object
* @en: Returns '1' if object is enabled; '0' otherwise
*
* Return: '0' on Success; Error code otherwise.
*/
int dpbp_is_enabled(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token,
int *en)
{
struct mc_command cmd = { 0 };
struct dpbp_rsp_is_enabled *rsp_params;
int err;
/* prepare command */
cmd.header = mc_encode_cmd_header(DPBP_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 dpbp_rsp_is_enabled *)cmd.params;
*en = rsp_params->enabled & DPBP_ENABLE;
return 0;
}
EXPORT_SYMBOL(dpbp_is_enabled);
/**
* dpbp_reset() - Reset the DPBP, returns the object to initial state.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPBP object
*
* Return: '0' on Success; Error code otherwise.
*/
int dpbp_reset(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPBP_CMDID_RESET,
cmd_flags, token);
/* send command to mc*/
return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL(dpbp_reset);
/**
* dpbp_get_attributes - Retrieve DPBP attributes.
*
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPBP object
* @attr: Returned object's attributes
*
* Return: '0' on Success; Error code otherwise.
*/
int dpbp_get_attributes(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token,
struct dpbp_attr *attr)
{
struct mc_command cmd = { 0 };
struct dpbp_rsp_get_attributes *rsp_params;
int err;
/* prepare command */
cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_ATTR,
cmd_flags, token);
/* send command to mc*/
err = mc_send_command(mc_io, &cmd);
if (err)
return err;
/* retrieve response parameters */
rsp_params = (struct dpbp_rsp_get_attributes *)cmd.params;
attr->bpid = le16_to_cpu(rsp_params->bpid);
attr->id = le32_to_cpu(rsp_params->id);
return 0;
}
EXPORT_SYMBOL(dpbp_get_attributes);
/**
* dpbp_get_api_version - Get Data Path Buffer Pool 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 Buffer Pool API
* @minor_ver: Minor version of Buffer Pool API
*
* Return: '0' on Success; Error code otherwise.
*/
int dpbp_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(DPBP_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;
}
EXPORT_SYMBOL(dpbp_get_api_version);
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