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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: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ioana Radulescu 2017-04-28 04:50:26 -05:00 committed by Greg Kroah-Hartman
parent c96d886d7b
commit 24999f3338
4 changed files with 477 additions and 21 deletions
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3
drivers/staging/fsl-mc/bus/Makefile
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@ -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/

63
drivers/staging/fsl-mc/bus/dpcon-cmd.h
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@ -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_CLOSE DPCON_CMD(0x800)
#define DPCON_CMDID_OPEN DPCON_CMD(0x808)
#define DPCON_CMDID_GET_API_VERSION DPCON_CMD(0xa08)
#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_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_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 DPCON_CMD(0x100)
#define DPCON_CMDID_SET_NOTIFICATION 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 */

317
drivers/staging/fsl-mc/bus/dpcon.c Normal file
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@ -0,0 +1,317 @@
/* 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);

115
drivers/staging/fsl-mc/include/dpcon.h Normal file
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@ -0,0 +1,115 @@
/* 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 */