1  /*
  2   * Copyright (C) 2005-2007 Jan Kiszka <jan.kiszka@web.de>.
  3   * Copyright (C) 2005 Joerg Langenberg <joerg.langenberg@gmx.net>.
  4   *
  5   * with adaptions for RTAI by Paolo Mantegazza <mantegazza@aero.polimi.it>
  6   *
  7   * RTAI is free software; you can redistribute it and/or modify it
  8   * under the terms of the GNU General Public License as published by
  9   * the Free Software Foundation; either version 2 of the License, or
 10   * (at your option) any later version.
 11   *
 12   * RTAI is distributed in the hope that it will be useful, but
 13   * WITHOUT ANY WARRANTY; without even the implied warranty of
 14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 15   * General Public License for more details.
 16   *
 17   * You should have received a copy of the GNU General Public License
 18   * along with RTAI; if not, write to the Free Software Foundation,
 19   * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 20   */
 21  
 22  #ifndef _RTDM_INTERNAL_H
 23  #define _RTDM_INTERNAL_H
 24  
 25  #include <linux/list.h>
 26  #include <linux/proc_fs.h>
 27  #include <linux/sem.h>
 28  
 29  
 30  
 31  #include <rtdm/rtdm_driver.h>
 32  
 33  #define RTDM_FD_MAX			CONFIG_RTAI_RTDM_FD_MAX
 34  
 35  #define DEF_DEVNAME_HASHTAB_SIZE	256	/* entries in name hash table */
 36  #define DEF_PROTO_HASHTAB_SIZE		256	/* entries in protocol hash table */
 37  
 38  struct rtdm_fildes {
 39  	struct rtdm_dev_context *context;
 40  };
 41  
 42  struct rtdm_process {
 43  #ifdef CONFIG_PROC_FS
 44  	char name[32];
 45  	pid_t pid;
 46  #endif /* CONFIG_PROC_FS */
 47  
 48  
 49  };
 50  
 51  DECLARE_EXTERN_XNLOCK(rt_fildes_lock);
 52  DECLARE_EXTERN_XNLOCK(rt_dev_lock);
 53  
 54  extern int __rtdm_muxid;
 55  extern struct rtdm_fildes fildes_table[];
 56  extern int open_fildes;
 57  extern struct semaphore nrt_dev_lock;
 58  extern unsigned int devname_hashtab_size;
 59  extern unsigned int protocol_hashtab_size;
 60  extern struct list_head *rtdm_named_devices;
 61  extern struct list_head *rtdm_protocol_devices;
 62  
 63  #ifdef MODULE
 64  #define rtdm_initialised 1
 65  #else /* !MODULE */
 66  extern int rtdm_initialised;
 67  #endif /* MODULE */
 68  
 69  void cleanup_owned_contexts(void *user_info);
 70  int rtdm_no_support(void);
 71  struct rtdm_device *get_named_device(const char *name);
 72  struct rtdm_device *get_protocol_device(int protocol_family, int socket_type);
 73  
 74  static inline void rtdm_dereference_device(struct rtdm_device *device)
 75  {
 76  	atomic_dec(&device->reserved.refcount);
 77  }
 78  
 79  int __init rtdm_dev_init(void);
 80  void rtdm_dev_cleanup(void);
 81  
 82  #ifdef CONFIG_PROC_FS
 83  int __init rtdm_proc_init(void);
 84  void rtdm_proc_cleanup(void);
 85  int rtdm_proc_register_device(struct rtdm_device *device);
 86  void rtdm_proc_unregister_device(struct rtdm_device *device);
 87  #else
 88  static inline int rtdm_proc_init(void)
 89  {
 90  	return 0;
 91  }
 92  void rtdm_proc_cleanup(void)
 93  {
 94  }
 95  static int rtdm_proc_register_device(struct rtdm_device *device)
 96  {
 97  	return 0;
 98  }
 99  static void rtdm_proc_unregister_device(struct rtdm_device *device)
100  {
101  }
102  #endif
103  
104  void rtdm_apc_handler(void *cookie);
105  
106  #endif /* _RTDM_INTERNAL_H */