FreeBSD/Linux Kernel Cross Reference
sys/sqtsec/co.h

     /* 
      * Mach Operating System
      * Copyright (c) 1991 Carnegie Mellon University
      * Copyright (c) 1991 Sequent Computer Systems
      * All Rights Reserved.
      * 
      * Permission to use, copy, modify and distribute this software and its
      * documentation is hereby granted, provided that both the copyright
      * notice and this permission notice appear in all copies of the
     * software, derivative works or modified versions, and any portions
     * thereof, and that both notices appear in supporting documentation.
     * 
     * CARNEGIE MELLON AND SEQUENT COMPUTER SYSTEMS ALLOW FREE USE OF
     * THIS SOFTWARE IN ITS "AS IS" CONDITION.  CARNEGIE MELLON AND
     * SEQUENT COMPUTER SYSTEMS DISCLAIM ANY LIABILITY OF ANY KIND FOR
     * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     * 
     * Carnegie Mellon requests users of this software to return to
     * 
     *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
     *  School of Computer Science
     *  Carnegie Mellon University
     *  Pittsburgh PA 15213-3890
     * 
     * any improvements or extensions that they make and grant Carnegie Mellon 
     * the rights to redistribute these changes.
     */
    
    /*
     * HISTORY
     * $Log:        co.h,v $
     * Revision 2.4  93/03/10  11:30:35  danner
     *      u_long -> u_int
     *      [93/03/10            danner]
     * 
     * Revision 2.3  91/07/31  18:06:27  dbg
     *      Changed copyright.
     *      [91/07/31            dbg]
     * 
     * Revision 2.2  91/05/08  13:05:01  dbg
     *      Added volatile declarations.
     *      [91/03/25            dbg]
     * 
     *      Added output buffer since Mach kernel circular buffers are not
     *      within SCED-addressable space (lowest 4 Meg).
     *      [90/12/18            dbg]
     * 
     *      Adapted for pure kernel.
     *      [90/09/24            dbg]
     * 
     */
    
    /*
     * $Header: co.h,v 2.4 93/03/10 11:30:35 danner Exp $
     */
    
    /*
     * co.h
     *      Info passed between the SCSI/Ether console driver and the
     *      binary config file.
     *
     * binary config table for the console driver.  There is one entry in
     * the co_bin_config[] table for each controller in the system.
     */
    
    /*
     * Revision 1.1  89/07/05  13:20:12  kak
     * Initial revision
     * 
     */
    #ifndef _SQTSEC_CO_H_
    #define _SQTSEC_CO_H_
    
    #include <sys/types.h>
    #include <device/tty.h>
    
    #include <sqt/mutex.h>
    #include <sqtsec/sec.h>
    
    struct co_bin_config {
            gate_t  cobc_gate;
    };
    
    /*
     * Console state.
     * There is one such structure for each tty device (minor device) on
     * each SCSI/Ether controller.
     *
     * The local and remote console devices are always minor devices 0
     * and 1, regardless of where they appear on the bus.  This is
     * guaranteed at config time.
     * 
     * Mutex notes:
     *      We could lock the input and output sides separately.  
     *      But, this would probably not be a big win.  So, use one
     *      lock for all state information.
     */
    
    /*
    * throw together a structure containing the size of the program queue
    * and its state.
    */
   
   struct sec_pq {
           struct sec_progq        *sq_progq;
           u_short                 sq_size;
   };
   
   #define CBSIZE  64                              /* size of input buffer */
   
   struct co_state {
           struct  tty     ss_tty;
           u_char  ss_alive;
           u_char  ss_initted;
                                                   /* input state */
           volatile
             int   is_status;
           struct  sec_dev *is_sd;
           struct  sec_pq  is_reqq;
           struct  sec_pq  is_doneq;
           u_int   is_ovc;                 /* count number of overflow errors */
           u_int   is_parc;                /* count number of parity errors */
           char    is_buffer[CBSIZE];
           u_char  is_restart_read;        /* restart read flag             */
           u_char  is_initted;
                                                   /* output state */
           volatile
             int   os_status;
           struct  sec_dev *os_sd;
           struct  sec_pq  os_reqq;
           struct  sec_pq  os_doneq;
           struct  sec_smode       os_smode;
           sema_t  os_busy_wait;
           u_char  os_busy_flag;
           u_char  os_initted;
   #ifdef  MACH_KERNEL
           char    os_buffer[CBSIZE];
   #endif  /* MACH_KERNEL */
   
   };
   
   #define CM_BAUD         sm_un.sm_cons.cm_baud
   #define CM_FLAGS        sm_un.sm_cons.cm_flags
   
   #ifdef  KERNEL
   extern struct   co_bin_config co_bin_config[];
   extern int      co_bin_config_count;
   #ifdef  DEBUG
   extern int      co_debug;
   #endif  DEBUG
   #endif  KERNEL
   
   #ifdef DEBUG
   extern char gc_last;
   #define DBGCHAR ('f'&037)
   #endif  DEBUG
   
   #endif  /* _SQTSEC_CO_H_ */

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