FreeBSD/Linux Kernel Cross Reference
sys/compat/irix/irix_usema.h

     /*      $NetBSD: irix_usema.h,v 1.14 2008/05/10 12:57:18 tnn Exp $ */
     
     /*-
      * Copyright (c) 2002 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Emmanuel Dreyfus.
      *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 _IRIX_USEMA_H_
    #define _IRIX_USEMA_H_
    
    #include <sys/param.h>
    #include <sys/device.h>
    #include <sys/rwlock.h>
    #include <sys/queue.h>
    #include <sys/vnode.h>
    
    #include <compat/irix/irix_types.h>
    #include <compat/irix/irix_exec.h>
    
    extern struct vfsops irix_usema_dummy_vfsops;
    void irix_usema_dummy_vfs_init(void);
    extern const struct vnodeopv_desc * const irix_usema_vnodeopv_descs[];
    extern const struct vnodeopv_desc irix_usema_opv_desc;
    extern int (**irix_usema_vnodeop_p)(void *);
    extern const struct vnodeopv_entry_desc irix_usema_vnodeop_entries[];
    
    
    void    irix_usemaattach(struct device *, struct device *, void *);
    
    int     irix_usema_close(void *);
    int     irix_usema_access(void *);
    int     irix_usema_getattr(void *);
    int     irix_usema_setattr(void *);
    int     irix_usema_fcntl(void *);
    int     irix_usema_ioctl(void *);
    int     irix_usema_poll(void *);
    int     irix_usema_inactive(void *);
    
    void    irix_usema_exit_cleanup(struct proc *, struct proc *);
    #ifdef DEBUG_IRIX
    void    irix_usema_debug(void);
    #endif
    
    #define IRIX_USEMADEV_MINOR     1
    #define IRIX_USEMACLNDEV_MINOR  0
    
    /* Semaphore internal structure: undocumented in IRIX */
    struct irix_semaphore {
            int is_val;     /* Sempahore value */
            int is_uk1;     /* unknown, usually small integer < 3000  */
            int is_uk2;     /* metric, debug or history pointer ? */
            int is_uk3;     /* unknown, usually equal to 0 */
            int is_uk4;     /* unknown, usually equal to 0 */
            int is_shid;    /* unique ID for the shared arena ? */
            int is_oid;     /* owner id? usually equal to -1 */
            int is_uk7;     /* unknown, usually equal to -1 */
            int is_uk8;     /* unknown, usually equal to 0 */
            int is_uk9;     /* unknown, usually equal to 0 */
            int is_uk10;    /* semaphore page base address ? */
            int is_uk12;    /* unknown, usually equal to 0 */
            int is_uk13;    /* metric, debug or history pointer ? */
            int is_uk14;    /* padding? */
    };
    
    struct irix_usema_idaddr {
            int iui_uk1;    /* unknown, usually equal to 0 */
            int *iui_oidp;  /* pointer to is_oid field in struct irix_semaphore */
    };
    
    /* waiting processes list */
    struct irix_waiting_proc_rec {
            TAILQ_ENTRY(irix_waiting_proc_rec) iwpr_list;
            struct proc *iwpr_p;
    };
    
   /* semaphore list, their vnode counterparts, and waiting processes lists */
   struct irix_usema_rec {
           LIST_ENTRY(irix_usema_rec) iur_list;
           struct vnode *iur_vn;
           struct irix_semaphore *iur_sem;
           int iur_shid;
           struct proc *iur_p;
           struct selinfo iur_si;
           int iur_waiting_count;
           TAILQ_HEAD(iur_waiting_p, irix_waiting_proc_rec) iur_waiting_p;
           TAILQ_HEAD(iur_released_p, irix_waiting_proc_rec) iur_released_p;
           krwlock_t iur_lock;             /* lock for both lists */
   };
   
   /* From IRIX's <sys/usioctl.h> */
   #define IRIX_USEMADEV           "/dev/usema"
   #define IRIX_USEMACLNDEV        "/dev/usemaclone"
   
   #define IRIX_UIOC       ('u' << 16 | 's' << 8)
   #define IRIX_UIOC_MASK  0x00ffff00
   
   #define IRIX_UIOCATTACHSEMA     (IRIX_UIOC|2)
   #define IRIX_UIOCBLOCK          (IRIX_UIOC|3)
   #define IRIX_UIOCABLOCK         (IRIX_UIOC|4)
   #define IRIX_UIOCNOIBLOCK       (IRIX_UIOC|5)
   #define IRIX_UIOCUNBLOCK        (IRIX_UIOC|6)
   #define IRIX_UIOCAUNBLOCK       (IRIX_UIOC|7)
   #define IRIX_UIOCINIT           (IRIX_UIOC|8)
   #define IRIX_UIOCGETSEMASTATE   (IRIX_UIOC|9)
   #define IRIX_UIOCABLOCKPID      (IRIX_UIOC|10)
   #define IRIX_UIOCADDPID         (IRIX_UIOC|11)
   #define IRIX_UIOCABLOCKQ        (IRIX_UIOC|12)
   #define IRIX_UIOCAUNBLOCKQ      (IRIX_UIOC|13)
   #define IRIX_UIOCIDADDR         (IRIX_UIOC|14)
   #define IRIX_UIOCSETSEMASTATE   (IRIX_UIOC|15)
   #define IRIX_UIOCGETCOUNT       (IRIX_UIOC|16)
   
   struct irix_usattach_s {
           irix_dev_t      us_dev;
           void            *us_handle;
   };
   typedef struct irix_usattach_s irix_usattach_t;
   
   struct irix_irix5_usattach_s {
           __uint32_t      us_dev;
           __uint32_t      us_handle;
   };
   typedef struct irix_irix5_usattach_s irix_irix5_usattach_t;
   
   struct irix_ussemastate_s {
           int     ntid;
           int     nprepost;
           int     nfilled;
           int     nthread;
           struct irix_ussematidstate_s {
                   pid_t   pid;
                   int     tid;
                   int     count;
           } *tidinfo;
   };
   typedef struct irix_ussemastate_s irix_ussemastate_t;
   typedef struct irix_ussematidstate_s irix_ussematidstate_t;
   
   
   /* usync_fcntl() commands, undocumented in IRIX */
   #define IRIX_USYNC_BLOCK                1
   #define IRIX_USYNC_INTR_BLOCK           2
   #define IRIX_USYNC_UNBLOCK_ALL          3
   #define IRIX_USYNC_UNBLOCK              4
   #define IRIX_USYNC_NOTIFY_REGISTER      5
   #define IRIX_USYNC_NOTIFY               6
   #define IRIX_USYNC_NOTIFY_DELETE        7
   #define IRIX_USYNC_NOTIFY_CLEAR         8
   #define IRIX_USYNC_GET_STATE            11
   
   struct irix_usync_arg {
           int iua_uk0;    /* unknown, usually small integer around 1000 */
           int iua_uk1;    /* unknown, usually pointer to code in libc */
           int iua_uk2;    /* unknown, usually null */
           struct irix_semaphore *iua_sem; /* semaphore address */
   };
   
   #endif /* _IRIX_USEMA_H_ */

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