Commit 24999f33 authored by Ioana Radulescu's avatar Ioana Radulescu Committed by Greg Kroah-Hartman
Browse files

staging: fsl-mc: bus: add DPCON object APIs 



This patch adds the command building/parsing wrapper functions
for the DPCON object. The binary interface version is v3.2.

A DPCON (DataPath Concentrator) is an aggregator object that
allows ingress frames from multiple hardware queues to be seen
as coming from a single source, from the CPU point of view.

Signed-off-by: default avatarIoana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: default avatarIoana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: default avatarStuart Yoder <stuart.yoder@nxp.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c96d886d

drivers/staging/fsl-mc/bus/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -17,7 +17,8 @@ mc-bus-driver-objs := fsl-mc-bus.o \ 
		      fsl-mc-msi.o \

		      irq-gic-v3-its-fsl-mc-msi.o \

		      dpmcp.o \

		      dpbp.o

		      dpbp.o \

		      dpcon.o



# MC DPIO driver

obj-$(CONFIG_FSL_MC_DPIO) += dpio/

drivers/staging/fsl-mc/bus/dpcon-cmd.h

+46 −23
Original line number Diff line number Diff line
@@ -33,30 +33,53 @@ 
#define _FSL_DPCON_CMD_H



/* DPCON Version */

#define DPCON_VER_MAJOR				2

#define DPCON_VER_MINOR				1

#define DPCON_VER_MAJOR				3

#define DPCON_VER_MINOR				2



/* Command versioning */

#define DPCON_CMD_BASE_VERSION			1

#define DPCON_CMD_ID_OFFSET			4



#define DPCON_CMD(id)	(((id) << DPCON_CMD_ID_OFFSET) | DPCON_CMD_BASE_VERSION)



/* Command IDs */

#define DPCON_CMDID_CLOSE				0x800

#define DPCON_CMDID_OPEN				0x808

#define DPCON_CMDID_CREATE				0x908

#define DPCON_CMDID_DESTROY				0x900



#define DPCON_CMDID_ENABLE				0x002

#define DPCON_CMDID_DISABLE				0x003

#define DPCON_CMDID_GET_ATTR				0x004

#define DPCON_CMDID_RESET				0x005

#define DPCON_CMDID_IS_ENABLED				0x006



#define DPCON_CMDID_SET_IRQ				0x010

#define DPCON_CMDID_GET_IRQ				0x011

#define DPCON_CMDID_SET_IRQ_ENABLE			0x012

#define DPCON_CMDID_GET_IRQ_ENABLE			0x013

#define DPCON_CMDID_SET_IRQ_MASK			0x014

#define DPCON_CMDID_GET_IRQ_MASK			0x015

#define DPCON_CMDID_GET_IRQ_STATUS			0x016

#define DPCON_CMDID_CLEAR_IRQ_STATUS			0x017



#define DPCON_CMDID_SET_NOTIFICATION			0x100

#define DPCON_CMDID_CLOSE			DPCON_CMD(0x800)

#define DPCON_CMDID_OPEN			DPCON_CMD(0x808)

#define DPCON_CMDID_GET_API_VERSION		DPCON_CMD(0xa08)



#define DPCON_CMDID_ENABLE			DPCON_CMD(0x002)

#define DPCON_CMDID_DISABLE			DPCON_CMD(0x003)

#define DPCON_CMDID_GET_ATTR			DPCON_CMD(0x004)

#define DPCON_CMDID_RESET			DPCON_CMD(0x005)

#define DPCON_CMDID_IS_ENABLED			DPCON_CMD(0x006)



#define DPCON_CMDID_SET_NOTIFICATION		DPCON_CMD(0x100)



struct dpcon_cmd_open {

	__le32 dpcon_id;

};



#define DPCON_ENABLE			1



struct dpcon_rsp_is_enabled {

	u8 enabled;

};



struct dpcon_rsp_get_attr {

	/* response word 0 */

	__le32 id;

	__le16 qbman_ch_id;

	u8 num_priorities;

	u8 pad;

};



struct dpcon_cmd_set_notification {

	/* cmd word 0 */

	__le32 dpio_id;

	u8 priority;

	u8 pad[3];

	/* cmd word 1 */

	__le64 user_ctx;

};



#endif /* _FSL_DPCON_CMD_H */

drivers/staging/fsl-mc/bus/dpcon.c

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+317 −0
Original line number Diff line number Diff line 
/* 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 "../include/mc-sys.h"

#include "../include/mc-cmd.h"

#include "../include/dpcon.h"



#include "dpcon-cmd.h"



/**

 * dpcon_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_'

 * @dpcon_id:	DPCON 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 dpcon_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 dpcon_open(struct fsl_mc_io *mc_io,

	       u32 cmd_flags,

	       int dpcon_id,

	       u16 *token)

{

	struct mc_command cmd = { 0 };

	struct dpcon_cmd_open *dpcon_cmd;

	int err;



	/* prepare command */

	cmd.header = mc_encode_cmd_header(DPCON_CMDID_OPEN,

					  cmd_flags,

					  0);

	dpcon_cmd = (struct dpcon_cmd_open *)cmd.params;

	dpcon_cmd->dpcon_id = cpu_to_le32(dpcon_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(dpcon_open);



/**

 * dpcon_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 DPCON 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 dpcon_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(DPCON_CMDID_CLOSE,

					  cmd_flags,

					  token);



	/* send command to mc*/

	return mc_send_command(mc_io, &cmd);

}

EXPORT_SYMBOL(dpcon_close);



/**

 * dpcon_enable() - Enable the DPCON

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:	Token of DPCON object

 *

 * Return:	'0' on Success; Error code otherwise

 */

int dpcon_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(DPCON_CMDID_ENABLE,

					  cmd_flags,

					  token);



	/* send command to mc*/

	return mc_send_command(mc_io, &cmd);

}

EXPORT_SYMBOL(dpcon_enable);



/**

 * dpcon_disable() - Disable the DPCON

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:	Token of DPCON object

 *

 * Return:	'0' on Success; Error code otherwise

 */

int dpcon_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(DPCON_CMDID_DISABLE,

					  cmd_flags,

					  token);



	/* send command to mc*/

	return mc_send_command(mc_io, &cmd);

}

EXPORT_SYMBOL(dpcon_disable);



/**

 * dpcon_is_enabled() -	Check if the DPCON 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 DPCON object

 * @en:		Returns '1' if object is enabled; '0' otherwise

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dpcon_is_enabled(struct fsl_mc_io *mc_io,

		     u32 cmd_flags,

		     u16 token,

		     int *en)

{

	struct mc_command cmd = { 0 };

	struct dpcon_rsp_is_enabled *dpcon_rsp;

	int err;



	/* prepare command */

	cmd.header = mc_encode_cmd_header(DPCON_CMDID_IS_ENABLED,

					  cmd_flags,

					  token);



	/* send command to mc*/

	err = mc_send_command(mc_io, &cmd);

	if (err)

		return err;



	/* retrieve response parameters */

	dpcon_rsp = (struct dpcon_rsp_is_enabled *)cmd.params;

	*en = dpcon_rsp->enabled & DPCON_ENABLE;



	return 0;

}

EXPORT_SYMBOL(dpcon_is_enabled);



/**

 * dpcon_reset() - Reset the DPCON, 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 DPCON object

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dpcon_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(DPCON_CMDID_RESET,

					  cmd_flags, token);



	/* send command to mc*/

	return mc_send_command(mc_io, &cmd);

}

EXPORT_SYMBOL(dpcon_reset);



/**

 * dpcon_get_attributes() - Retrieve DPCON 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 DPCON object

 * @attr:	Object's attributes

 *

 * Return:	'0' on Success; Error code otherwise.

 */

int dpcon_get_attributes(struct fsl_mc_io *mc_io,

			 u32 cmd_flags,

			 u16 token,

			 struct dpcon_attr *attr)

{

	struct mc_command cmd = { 0 };

	struct dpcon_rsp_get_attr *dpcon_rsp;

	int err;



	/* prepare command */

	cmd.header = mc_encode_cmd_header(DPCON_CMDID_GET_ATTR,

					  cmd_flags,

					  token);



	/* send command to mc*/

	err = mc_send_command(mc_io, &cmd);

	if (err)

		return err;



	/* retrieve response parameters */

	dpcon_rsp = (struct dpcon_rsp_get_attr *)cmd.params;

	attr->id = le32_to_cpu(dpcon_rsp->id);

	attr->qbman_ch_id = le16_to_cpu(dpcon_rsp->qbman_ch_id);

	attr->num_priorities = dpcon_rsp->num_priorities;



	return 0;

}

EXPORT_SYMBOL(dpcon_get_attributes);



/**

 * dpcon_set_notification() - Set DPCON notification destination

 * @mc_io:	Pointer to MC portal's I/O object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @token:	Token of DPCON object

 * @cfg:	Notification parameters

 *

 * Return:	'0' on Success; Error code otherwise

 */

int dpcon_set_notification(struct fsl_mc_io *mc_io,

			   u32 cmd_flags,

			   u16 token,

			   struct dpcon_notification_cfg *cfg)

{

	struct mc_command cmd = { 0 };

	struct dpcon_cmd_set_notification *dpcon_cmd;



	/* prepare command */

	cmd.header = mc_encode_cmd_header(DPCON_CMDID_SET_NOTIFICATION,

					  cmd_flags,

					  token);

	dpcon_cmd = (struct dpcon_cmd_set_notification *)cmd.params;

	dpcon_cmd->dpio_id = cpu_to_le32(cfg->dpio_id);

	dpcon_cmd->priority = cfg->priority;

	dpcon_cmd->user_ctx = cpu_to_le64(cfg->user_ctx);



	/* send command to mc*/

	return mc_send_command(mc_io, &cmd);

}

EXPORT_SYMBOL(dpcon_set_notification);



/**

 * dpcon_get_api_version - Get Data Path Concentrator API version

 * @mc_io:	Pointer to MC portal's DPCON object

 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'

 * @major_ver:	Major version of DPCON API

 * @minor_ver:	Minor version of DPCON API

 *

 * Return:	'0' on Success; Error code otherwise

 */

int dpcon_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(DPCON_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(dpcon_get_api_version);

drivers/staging/fsl-mc/include/dpcon.h

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+115 −0
Original line number Diff line number Diff line 
/* 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.

 */

#ifndef __FSL_DPCON_H

#define __FSL_DPCON_H



/* Data Path Concentrator API

 * Contains initialization APIs and runtime control APIs for DPCON

 */



struct fsl_mc_io;



/** General DPCON macros */



/**

 * Use it to disable notifications; see dpcon_set_notification()

 */

#define DPCON_INVALID_DPIO_ID		(int)(-1)



int dpcon_open(struct fsl_mc_io *mc_io,

	       u32 cmd_flags,

	       int dpcon_id,

	       u16 *token);



int dpcon_close(struct fsl_mc_io *mc_io,

		u32 cmd_flags,

		u16 token);



int dpcon_enable(struct fsl_mc_io *mc_io,

		 u32 cmd_flags,

		 u16 token);



int dpcon_disable(struct fsl_mc_io *mc_io,

		  u32 cmd_flags,

		  u16 token);



int dpcon_is_enabled(struct fsl_mc_io *mc_io,

		     u32 cmd_flags,

		     u16 token,

		     int *en);



int dpcon_reset(struct fsl_mc_io *mc_io,

		u32 cmd_flags,

		u16 token);



/**

 * struct dpcon_attr - Structure representing DPCON attributes

 * @id: DPCON object ID

 * @qbman_ch_id: Channel ID to be used by dequeue operation

 * @num_priorities: Number of priorities for the DPCON channel (1-8)

 */

struct dpcon_attr {

	int id;

	u16 qbman_ch_id;

	u8 num_priorities;

};



int dpcon_get_attributes(struct fsl_mc_io *mc_io,

			 u32 cmd_flags,

			 u16 token,

			 struct dpcon_attr *attr);



/**

 * struct dpcon_notification_cfg - Structure representing notification params

 * @dpio_id:	DPIO object ID; must be configured with a notification channel;

 *	to disable notifications set it to 'DPCON_INVALID_DPIO_ID';

 * @priority:	Priority selection within the DPIO channel; valid values

 *		are 0-7, depending on the number of priorities in that channel

 * @user_ctx:	User context value provided with each CDAN message

 */

struct dpcon_notification_cfg {

	int dpio_id;

	u8 priority;

	u64 user_ctx;

};



int dpcon_set_notification(struct fsl_mc_io *mc_io,

			   u32 cmd_flags,

			   u16 token,

			   struct dpcon_notification_cfg *cfg);



int dpcon_get_api_version(struct fsl_mc_io *mc_io,

			  u32 cmd_flags,

			  u16 *major_ver,

			  u16 *minor_ver);



#endif /* __FSL_DPCON_H */

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