280 lines
8.0 KiB
C
280 lines
8.0 KiB
C
/*
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* Copyright 2013-2016 Freescale Semiconductor Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the above-listed copyright holders nor the
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* names of any contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* ALTERNATIVELY, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") as published by the Free Software
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* Foundation, either version 2 of that License or (at your option) any
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* later version.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/kernel.h>
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#include "../include/mc.h"
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#include "../include/dpbp.h"
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#include "dpbp-cmd.h"
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/**
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* dpbp_open() - Open a control session for the specified object.
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @dpbp_id: DPBP unique ID
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* @token: Returned token; use in subsequent API calls
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*
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* This function can be used to open a control session for an
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* already created object; an object may have been declared in
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* the DPL or by calling the dpbp_create function.
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* This function returns a unique authentication token,
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* associated with the specific object ID and the specific MC
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* portal; this token must be used in all subsequent commands for
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* this specific object
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_open(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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int dpbp_id,
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u16 *token)
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{
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struct mc_command cmd = { 0 };
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struct dpbp_cmd_open *cmd_params;
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPBP_CMDID_OPEN,
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cmd_flags, 0);
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cmd_params = (struct dpbp_cmd_open *)cmd.params;
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cmd_params->dpbp_id = cpu_to_le32(dpbp_id);
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/* send command to mc*/
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err = mc_send_command(mc_io, &cmd);
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if (err)
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return err;
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/* retrieve response parameters */
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*token = mc_cmd_hdr_read_token(&cmd);
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return err;
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}
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EXPORT_SYMBOL(dpbp_open);
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/**
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* dpbp_close() - Close the control session of the object
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPBP object
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*
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* After this function is called, no further operations are
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* allowed on the object without opening a new control session.
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_close(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token)
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{
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struct mc_command cmd = { 0 };
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPBP_CMDID_CLOSE, cmd_flags,
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token);
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/* send command to mc*/
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return mc_send_command(mc_io, &cmd);
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}
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EXPORT_SYMBOL(dpbp_close);
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/**
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* dpbp_enable() - Enable the DPBP.
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPBP object
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_enable(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token)
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{
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struct mc_command cmd = { 0 };
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPBP_CMDID_ENABLE, cmd_flags,
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token);
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/* send command to mc*/
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return mc_send_command(mc_io, &cmd);
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}
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EXPORT_SYMBOL(dpbp_enable);
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/**
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* dpbp_disable() - Disable the DPBP.
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPBP object
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_disable(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token)
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{
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struct mc_command cmd = { 0 };
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPBP_CMDID_DISABLE,
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cmd_flags, token);
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/* send command to mc*/
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return mc_send_command(mc_io, &cmd);
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}
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EXPORT_SYMBOL(dpbp_disable);
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/**
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* dpbp_is_enabled() - Check if the DPBP is enabled.
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPBP object
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* @en: Returns '1' if object is enabled; '0' otherwise
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_is_enabled(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token,
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int *en)
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{
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struct mc_command cmd = { 0 };
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struct dpbp_rsp_is_enabled *rsp_params;
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPBP_CMDID_IS_ENABLED, cmd_flags,
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token);
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/* send command to mc*/
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err = mc_send_command(mc_io, &cmd);
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if (err)
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return err;
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/* retrieve response parameters */
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rsp_params = (struct dpbp_rsp_is_enabled *)cmd.params;
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*en = rsp_params->enabled & DPBP_ENABLE;
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return 0;
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}
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EXPORT_SYMBOL(dpbp_is_enabled);
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/**
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* dpbp_reset() - Reset the DPBP, returns the object to initial state.
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPBP object
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_reset(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token)
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{
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struct mc_command cmd = { 0 };
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPBP_CMDID_RESET,
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cmd_flags, token);
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/* send command to mc*/
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return mc_send_command(mc_io, &cmd);
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}
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EXPORT_SYMBOL(dpbp_reset);
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/**
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* dpbp_get_attributes - Retrieve DPBP attributes.
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*
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPBP object
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* @attr: Returned object's attributes
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_get_attributes(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token,
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struct dpbp_attr *attr)
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{
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struct mc_command cmd = { 0 };
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struct dpbp_rsp_get_attributes *rsp_params;
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_ATTR,
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cmd_flags, token);
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/* send command to mc*/
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err = mc_send_command(mc_io, &cmd);
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if (err)
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return err;
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/* retrieve response parameters */
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rsp_params = (struct dpbp_rsp_get_attributes *)cmd.params;
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attr->bpid = le16_to_cpu(rsp_params->bpid);
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attr->id = le32_to_cpu(rsp_params->id);
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return 0;
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}
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EXPORT_SYMBOL(dpbp_get_attributes);
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/**
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* dpbp_get_api_version - Get Data Path Buffer Pool API version
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* @mc_io: Pointer to Mc portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @major_ver: Major version of Buffer Pool API
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* @minor_ver: Minor version of Buffer Pool API
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_get_api_version(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 *major_ver,
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u16 *minor_ver)
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{
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struct mc_command cmd = { 0 };
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_API_VERSION,
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cmd_flags, 0);
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/* send command to mc */
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err = mc_send_command(mc_io, &cmd);
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if (err)
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return err;
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/* retrieve response parameters */
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mc_cmd_read_api_version(&cmd, major_ver, minor_ver);
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return 0;
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}
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EXPORT_SYMBOL(dpbp_get_api_version);
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