Quelle dpio.c
Sprache: C
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/*
* Copyright 2013 - 2016 Freescale Semiconductor Inc .
* Copyright 2016 NXP
*
*/
#include <linux/kernel.h>
#include <linux/fsl/mc.h>
#include "dpio.h"
#include "dpio-cmd.h"
/*
* Data Path I / O Portal API
* Contains initialization APIs and runtime control APIs for DPIO
*/
/**
* dpio_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_ '
* @ dpio_id : DPIO 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 dpio_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 dpio_open(struct fsl_mc_io *mc_io,
u32 cmd_flags,
int dpio_id,
u16 *token)
{
struct fsl_mc_command cmd = { 0 };
struct dpio_cmd_open *dpio_cmd;
int err;
/* prepare command */
cmd.header = mc_encode_cmd_header(DPIO_CMDID_OPEN,
cmd_flags,
0 );
dpio_cmd = (struct dpio_cmd_open *)cmd.params;
dpio_cmd->dpio_id = cpu_to_le32(dpio_id);
err = mc_send_command(mc_io, &cmd);
if (err)
return err;
/* retrieve response parameters */
*token = mc_cmd_hdr_read_token(&cmd);
return 0 ;
}
/**
* dpio_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 DPIO object
*
* Return : ' 0 ' on Success ; Error code otherwise .
*/
int dpio_close(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct fsl_mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPIO_CMDID_CLOSE,
cmd_flags,
token);
return mc_send_command(mc_io, &cmd);
}
/**
* dpio_enable ( ) - Enable the DPIO , allow I / O portal operations .
* @ mc_io : Pointer to MC portal ' s I / O object
* @ cmd_flags : Command flags ; one or more of ' MC_CMD_FLAG_ '
* @ token : Token of DPIO object
*
* Return : ' 0 ' on Success ; Error code otherwise
*/
int dpio_enable(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct fsl_mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPIO_CMDID_ENABLE,
cmd_flags,
token);
return mc_send_command(mc_io, &cmd);
}
/**
* dpio_disable ( ) - Disable the DPIO , stop any I / O portal operation .
* @ mc_io : Pointer to MC portal ' s I / O object
* @ cmd_flags : Command flags ; one or more of ' MC_CMD_FLAG_ '
* @ token : Token of DPIO object
*
* Return : ' 0 ' on Success ; Error code otherwise
*/
int dpio_disable(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct fsl_mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPIO_CMDID_DISABLE,
cmd_flags,
token);
return mc_send_command(mc_io, &cmd);
}
/**
* dpio_get_attributes ( ) - Retrieve DPIO 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 DPIO object
* @ attr : Returned object ' s attributes
*
* Return : ' 0 ' on Success ; Error code otherwise
*/
int dpio_get_attributes(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token,
struct dpio_attr *attr)
{
struct fsl_mc_command cmd = { 0 };
struct dpio_rsp_get_attr *dpio_rsp;
int err;
/* prepare command */
cmd.header = mc_encode_cmd_header(DPIO_CMDID_GET_ATTR,
cmd_flags,
token);
err = mc_send_command(mc_io, &cmd);
if (err)
return err;
/* retrieve response parameters */
dpio_rsp = (struct dpio_rsp_get_attr *)cmd.params;
attr->id = le32_to_cpu(dpio_rsp->id);
attr->qbman_portal_id = le16_to_cpu(dpio_rsp->qbman_portal_id);
attr->num_priorities = dpio_rsp->num_priorities;
attr->channel_mode = dpio_rsp->channel_mode & DPIO_CHANNEL_MODE_MASK;
attr->qbman_portal_ce_offset =
le64_to_cpu(dpio_rsp->qbman_portal_ce_addr);
attr->qbman_portal_ci_offset =
le64_to_cpu(dpio_rsp->qbman_portal_ci_addr);
attr->qbman_version = le32_to_cpu(dpio_rsp->qbman_version);
attr->clk = le32_to_cpu(dpio_rsp->clk);
return 0 ;
}
int dpio_set_stashing_destination(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token,
u8 sdest)
{
struct fsl_mc_command cmd = { 0 };
struct dpio_stashing_dest *dpio_cmd;
cmd.header = mc_encode_cmd_header(DPIO_CMDID_SET_STASHING_DEST,
cmd_flags, token);
dpio_cmd = (struct dpio_stashing_dest *)cmd.params;
dpio_cmd->sdest = sdest;
return mc_send_command(mc_io, &cmd);
}
/**
* dpio_get_api_version - Get Data Path I / O API version
* @ mc_io : Pointer to MC portal ' s DPIO object
* @ cmd_flags : Command flags ; one or more of ' MC_CMD_FLAG_ '
* @ major_ver : Major version of DPIO API
* @ minor_ver : Minor version of DPIO API
*
* Return : ' 0 ' on Success ; Error code otherwise
*/
int dpio_get_api_version(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 *major_ver,
u16 *minor_ver)
{
struct fsl_mc_command cmd = { 0 };
int err;
/* prepare command */
cmd.header = mc_encode_cmd_header(DPIO_CMDID_GET_API_VERSION,
cmd_flags, 0 );
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 ;
}
/**
* dpio_reset ( ) - Reset the DPIO , 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 DPIO object
*
* Return : ' 0 ' on Success ; Error code otherwise .
*/
int dpio_reset(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct fsl_mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPIO_CMDID_RESET,
cmd_flags,
token);
/* send command to mc*/
return mc_send_command(mc_io, &cmd);
}
Messung V0.5 in Prozent C=96 H=89 G=92
¤ Dauer der Verarbeitung: 0.6 Sekunden
¤
*© Formatika GbR, Deutschland
2026-10-11
Neuigkeiten
Aktuelles
Motto des Tages
Open Source Software
Jenseits des Üblichen ....
Besucherstatistik
Statistik
#Sources=1127926
#Domains=2039723