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363b0cbf3d
Be consistent and use kernel-preferred multi-line comment style everywhere. Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
504 lines
15 KiB
C
504 lines
15 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 "../include/mc-sys.h"
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#include "../include/mc-cmd.h"
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#include "dpmcp.h"
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#include "dpmcp-cmd.h"
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/**
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* dpmcp_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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* @dpmcp_id: DPMCP 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 dpmcp_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 dpmcp_open(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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int dpmcp_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 dpmcp_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(DPMCP_CMDID_OPEN,
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cmd_flags, 0);
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cmd_params = (struct dpmcp_cmd_open *)cmd.params;
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cmd_params->dpmcp_id = cpu_to_le32(dpmcp_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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/**
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* dpmcp_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 DPMCP 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 dpmcp_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(DPMCP_CMDID_CLOSE,
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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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/**
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* dpmcp_create() - Create the DPMCP 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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* @cfg: Configuration structure
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* @token: Returned token; use in subsequent API calls
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*
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* Create the DPMCP object, allocate required resources and
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* perform required initialization.
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*
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* The object can be created either by declaring it in the
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* DPL file, or by calling this 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 calls to
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* this specific object. For objects that are created using the
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* DPL file, call dpmcp_open function to get an authentication
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* token first.
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpmcp_create(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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const struct dpmcp_cfg *cfg,
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u16 *token)
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{
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struct mc_command cmd = { 0 };
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struct dpmcp_cmd_create *cmd_params;
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPMCP_CMDID_CREATE,
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cmd_flags, 0);
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cmd_params = (struct dpmcp_cmd_create *)cmd.params;
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cmd_params->portal_id = cpu_to_le32(cfg->portal_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 0;
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}
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/**
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* dpmcp_destroy() - Destroy the DPMCP object and release all its resources.
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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 DPMCP 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 dpmcp_destroy(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(DPMCP_CMDID_DESTROY,
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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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/**
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* dpmcp_reset() - Reset the DPMCP, 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 DPMCP 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 dpmcp_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(DPMCP_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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/**
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* dpmcp_set_irq() - Set IRQ information for the DPMCP to trigger an interrupt.
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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 DPMCP object
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* @irq_index: Identifies the interrupt index to configure
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* @irq_cfg: IRQ configuration
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpmcp_set_irq(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token,
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u8 irq_index,
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struct dpmcp_irq_cfg *irq_cfg)
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{
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struct mc_command cmd = { 0 };
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struct dpmcp_cmd_set_irq *cmd_params;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPMCP_CMDID_SET_IRQ,
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cmd_flags, token);
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cmd_params = (struct dpmcp_cmd_set_irq *)cmd.params;
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cmd_params->irq_index = irq_index;
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cmd_params->irq_val = cpu_to_le32(irq_cfg->val);
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cmd_params->irq_addr = cpu_to_le64(irq_cfg->paddr);
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cmd_params->irq_num = cpu_to_le32(irq_cfg->irq_num);
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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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/**
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* dpmcp_get_irq() - Get IRQ information from the DPMCP.
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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 DPMCP object
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* @irq_index: The interrupt index to configure
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* @type: Interrupt type: 0 represents message interrupt
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* type (both irq_addr and irq_val are valid)
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* @irq_cfg: IRQ 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 dpmcp_get_irq(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token,
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u8 irq_index,
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int *type,
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struct dpmcp_irq_cfg *irq_cfg)
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{
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struct mc_command cmd = { 0 };
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struct dpmcp_cmd_get_irq *cmd_params;
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struct dpmcp_rsp_get_irq *rsp_params;
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_IRQ,
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cmd_flags, token);
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cmd_params = (struct dpmcp_cmd_get_irq *)cmd.params;
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cmd_params->irq_index = irq_index;
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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 dpmcp_rsp_get_irq *)cmd.params;
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irq_cfg->val = le32_to_cpu(rsp_params->irq_val);
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irq_cfg->paddr = le64_to_cpu(rsp_params->irq_paddr);
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irq_cfg->irq_num = le32_to_cpu(rsp_params->irq_num);
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*type = le32_to_cpu(rsp_params->type);
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return 0;
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}
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/**
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* dpmcp_set_irq_enable() - Set overall interrupt 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 DPMCP object
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* @irq_index: The interrupt index to configure
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* @en: Interrupt state - enable = 1, disable = 0
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*
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* Allows GPP software to control when interrupts are generated.
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* Each interrupt can have up to 32 causes. The enable/disable control's the
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* overall interrupt state. if the interrupt is disabled no causes will cause
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* an interrupt.
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpmcp_set_irq_enable(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token,
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u8 irq_index,
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u8 en)
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{
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struct mc_command cmd = { 0 };
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struct dpmcp_cmd_set_irq_enable *cmd_params;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPMCP_CMDID_SET_IRQ_ENABLE,
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cmd_flags, token);
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cmd_params = (struct dpmcp_cmd_set_irq_enable *)cmd.params;
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cmd_params->enable = en & DPMCP_ENABLE;
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cmd_params->irq_index = irq_index;
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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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/**
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* dpmcp_get_irq_enable() - Get overall interrupt 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 DPMCP object
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* @irq_index: The interrupt index to configure
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* @en: Returned interrupt state - enable = 1, disable = 0
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpmcp_get_irq_enable(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token,
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u8 irq_index,
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u8 *en)
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{
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struct mc_command cmd = { 0 };
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struct dpmcp_cmd_get_irq_enable *cmd_params;
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struct dpmcp_rsp_get_irq_enable *rsp_params;
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_IRQ_ENABLE,
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cmd_flags, token);
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cmd_params = (struct dpmcp_cmd_get_irq_enable *)cmd.params;
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cmd_params->irq_index = irq_index;
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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 dpmcp_rsp_get_irq_enable *)cmd.params;
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*en = rsp_params->enabled & DPMCP_ENABLE;
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return 0;
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}
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/**
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* dpmcp_set_irq_mask() - Set interrupt mask.
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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 DPMCP object
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* @irq_index: The interrupt index to configure
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* @mask: Event mask to trigger interrupt;
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* each bit:
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* 0 = ignore event
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* 1 = consider event for asserting IRQ
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*
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* Every interrupt can have up to 32 causes and the interrupt model supports
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* masking/unmasking each cause independently
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpmcp_set_irq_mask(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token,
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u8 irq_index,
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u32 mask)
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{
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struct mc_command cmd = { 0 };
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struct dpmcp_cmd_set_irq_mask *cmd_params;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPMCP_CMDID_SET_IRQ_MASK,
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cmd_flags, token);
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cmd_params = (struct dpmcp_cmd_set_irq_mask *)cmd.params;
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cmd_params->mask = cpu_to_le32(mask);
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cmd_params->irq_index = irq_index;
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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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/**
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* dpmcp_get_irq_mask() - Get interrupt mask.
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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 DPMCP object
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* @irq_index: The interrupt index to configure
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* @mask: Returned event mask to trigger interrupt
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*
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* Every interrupt can have up to 32 causes and the interrupt model supports
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* masking/unmasking each cause independently
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpmcp_get_irq_mask(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token,
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u8 irq_index,
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u32 *mask)
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{
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struct mc_command cmd = { 0 };
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struct dpmcp_cmd_get_irq_mask *cmd_params;
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struct dpmcp_rsp_get_irq_mask *rsp_params;
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_IRQ_MASK,
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cmd_flags, token);
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cmd_params = (struct dpmcp_cmd_get_irq_mask *)cmd.params;
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cmd_params->irq_index = irq_index;
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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 dpmcp_rsp_get_irq_mask *)cmd.params;
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*mask = le32_to_cpu(rsp_params->mask);
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return 0;
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}
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/**
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* dpmcp_get_irq_status() - Get the current status of any pending interrupts.
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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 DPMCP object
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* @irq_index: The interrupt index to configure
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* @status: Returned interrupts status - one bit per cause:
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* 0 = no interrupt pending
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* 1 = interrupt pending
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpmcp_get_irq_status(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token,
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u8 irq_index,
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u32 *status)
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{
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struct mc_command cmd = { 0 };
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struct dpmcp_cmd_get_irq_status *cmd_params;
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struct dpmcp_rsp_get_irq_status *rsp_params;
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_IRQ_STATUS,
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cmd_flags, token);
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cmd_params = (struct dpmcp_cmd_get_irq_status *)cmd.params;
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cmd_params->status = cpu_to_le32(*status);
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cmd_params->irq_index = irq_index;
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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 dpmcp_rsp_get_irq_status *)cmd.params;
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*status = le32_to_cpu(rsp_params->status);
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return 0;
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}
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/**
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* dpmcp_get_attributes - Retrieve DPMCP 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 DPMCP 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 dpmcp_get_attributes(struct fsl_mc_io *mc_io,
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|
u32 cmd_flags,
|
|
u16 token,
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|
struct dpmcp_attr *attr)
|
|
{
|
|
struct mc_command cmd = { 0 };
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|
struct dpmcp_rsp_get_attributes *rsp_params;
|
|
int err;
|
|
|
|
/* prepare command */
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|
cmd.header = mc_encode_cmd_header(DPMCP_CMDID_GET_ATTR,
|
|
cmd_flags, token);
|
|
|
|
/* send command to mc*/
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|
err = mc_send_command(mc_io, &cmd);
|
|
if (err)
|
|
return err;
|
|
|
|
/* retrieve response parameters */
|
|
rsp_params = (struct dpmcp_rsp_get_attributes *)cmd.params;
|
|
attr->id = le32_to_cpu(rsp_params->id);
|
|
attr->version.major = le16_to_cpu(rsp_params->version_major);
|
|
attr->version.minor = le16_to_cpu(rsp_params->version_minor);
|
|
|
|
return 0;
|
|
}
|