nuttx/drivers/ipcc/ipcc_priv.h
Michał Łyszczek a9f78a64db drivers/ipcc: add Inter Processor Communication driver
This patch adds upper half driver for IPCC character driver. IPCC
is a Inter Processor Communication Controller.

Driver is still immature and not thoroughly tested, thus
CONFIG_EXPERIMENTAL is required.

Signed-off-by: Michał Łyszczek <michal.lyszczek@bofc.pl>
2022-07-29 23:11:32 +08:00

64 lines
2.7 KiB
C

/****************************************************************************
* drivers/ipcc/ipcc_priv.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/ipcc.h>
#include <stdio.h>
/****************************************************************************
* Public Types
****************************************************************************/
/* Driver state structure */
struct ipcc_driver_s
{
FAR struct pollfd *fds[CONFIG_IPCC_NPOLLWAITERS];
FAR struct ipcc_lower_s *ipcc; /* Lower half driver state */
int crefs; /* Count number of open references */
int unlinked; /* 1 - driver has been unlinked */
sem_t exclsem; /* Mutual exclusion for driver */
sem_t rxsem; /* Data ready to read semaphore */
sem_t txsem; /* Data ready to send semaphore */
};
/****************************************************************************
* Public Functions Prototypes
****************************************************************************/
int ipcc_open(FAR struct file *filep);
int ipcc_close(FAR struct file *filep);
int ipcc_ioctl(FAR struct file *filep, int cmd, unsigned long arg);
ssize_t ipcc_read(FAR struct file *filep, FAR char *buffer, size_t buflen);
ssize_t ipcc_write(FAR struct file *filep, FAR const char *buffer,
size_t buflen);
int ipcc_poll(FAR struct file *filep, FAR struct pollfd *fds,
bool setup);
#ifndef CONFIG_DISABLE_PSEUDOFS_OPERATIONS
int ipcc_unlink(FAR struct inode *inode);
#endif
void ipcc_pollnotify(FAR struct ipcc_driver_s *ipcc, pollevent_t eventset);
void ipcc_cleanup(FAR struct ipcc_driver_s *priv);