internal.h

/*
 * Copyright (C) 2005-2007 Jan Kiszka <[email protected]>.
 * Copyright (C) 2005 Joerg Langenberg <[email protected]>.
 *
 * Xenomai is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Xenomai is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Xenomai; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef _RTDM_INTERNAL_H
#define _RTDM_INTERNAL_H

#include <nucleus/pod.h>
#include <nucleus/ppd.h>
#include <rtdm/rtdm_driver.h>

#include <linux/list.h>
#include <linux/sem.h>

#ifndef CONFIG_XENO_OPT_DEBUG_RTDM_APPL
#define CONFIG_XENO_OPT_DEBUG_RTDM_APPL 0
#endif

#define RTDM_FD_MAX                     CONFIG_XENO_OPT_RTDM_FILDES

#define DEF_DEVNAME_HASHTAB_SIZE        256     /* entries in name hash table */
#define DEF_PROTO_HASHTAB_SIZE          256     /* entries in protocol hash table */

struct rtdm_fildes {
        struct rtdm_dev_context *context;
};

struct rtdm_process {
#ifdef CONFIG_XENO_OPT_VFILE
        char name[32];
        pid_t pid;
#endif /* CONFIG_XENO_OPT_VFILE */

        xnshadow_ppd_t ppd;
};

DECLARE_EXTERN_XNLOCK(rt_fildes_lock);
DECLARE_EXTERN_XNLOCK(rt_dev_lock);

extern int __rtdm_muxid;
extern struct rtdm_fildes fildes_table[];
extern int open_fildes;
extern struct semaphore nrt_dev_lock;
extern unsigned int devname_hashtab_size;
extern unsigned int protocol_hashtab_size;
extern struct list_head *rtdm_named_devices;
extern struct list_head *rtdm_protocol_devices;

#ifdef MODULE
#define rtdm_initialised 1
#else /* !MODULE */
extern int rtdm_initialised;
#endif /* MODULE */

void cleanup_owned_contexts(void *user_info);
int rtdm_no_support(void);
struct rtdm_device *get_named_device(const char *name);
struct rtdm_device *get_protocol_device(int protocol_family, int socket_type);

static inline void rtdm_dereference_device(struct rtdm_device *device)
{
        atomic_dec(&device->reserved.refcount);
}

int __init rtdm_dev_init(void);
void rtdm_dev_cleanup(void);

#ifdef CONFIG_XENO_OPT_VFILE
int rtdm_proc_init(void);
void rtdm_proc_cleanup(void);
int rtdm_proc_register_device(struct rtdm_device *device);
void rtdm_proc_unregister_device(struct rtdm_device *device);
#else
static inline int rtdm_proc_init(void)
{
        return 0;
}
void rtdm_proc_cleanup(void)
{
}
static int rtdm_proc_register_device(struct rtdm_device *device)
{
        return 0;
}
static void rtdm_proc_unregister_device(struct rtdm_device *device)
{
}
#endif

void rtdm_apc_handler(void *cookie);

#endif /* _RTDM_INTERNAL_H */