FreeBSD/Linux Kernel Cross Reference
sys/scsi/compat_30.h

     /* 
      * Mach Operating System
      * Copyright (c) 1991,1990 Carnegie Mellon University
      * 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 ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     * CONDITION.  CARNEGIE MELLON DISCLAIMS 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:        compat_30.h,v $
     * Revision 2.6  91/10/09  16:16:40  af
     *       Revision 2.5.1.1  91/08/29  18:10:28  af
     *              The 2.5 raw-I/O support code has moved, and became MI.
     * 
     * Revision 2.5.1.1  91/08/29  18:10:28  af
     *      The 2.5 raw-I/O support code has moved, and became MI.
     * 
     * Revision 2.5  91/08/24  12:27:32  af
     *      Corrected defines.
     *      [91/08/02  03:50:58  af]
     * 
     * Revision 2.4  91/06/19  11:56:38  rvb
     *      File moved here from mips/PMAX since it is now "MI" code, also
     *      used by Vax3100 and soon -- the omron luna88k.
     *      [91/06/04            rvb]
     * 
     * Revision 2.3  91/05/14  17:20:23  mrt
     *      Correcting copyright
     * 
     * Revision 2.2  91/05/13  06:03:39  af
     *      Created.
     *      [91/05/12  16:02:24  af]
     * 
     */
    /*
     *      File: compat_30.h
     *      Author: Alessandro Forin, Carnegie Mellon University
     *      Date:   4/91
     *
     *      Compatibility defs to retrofit Mach 3.0 drivers
     *      into Mach 2.6.
     */
    
    #ifndef _SCSI_COMPAT_30_
    #define _SCSI_COMPAT_30_
    
    #include <kern/assert.h>
    
    #ifdef  MACH_KERNEL
    /*
     * Mach 3.0 compiles with these definitions
     */
    
    #include <device/param.h>
    #include <device/io_req.h>
    #include <device/device_types.h>
    #include <device/disk_status.h>
    
    /*
     * Scratch temporary in io_req structure (for error handling)
     */
    #define io_temporary    io_error
    
    #else   /*MACH_KERNEL*/
    /*
     * Mach 2.x compiles with these definitions
     */
    
    /* ??? */
    typedef int     dev_mode_t;
    typedef int     *dev_status_t;  /* Variable-length array of integers */
    /* ??? */
    
    /* Buffer structures */
    
    typedef int     io_return_t;
    
    #include <sys/param.h>
    #include <sys/buf.h>
    
    #define io_req  buf
   typedef struct buf      *io_req_t;
   
   #define io_req_alloc(ior,size)  ior = geteblk(size)
   #define io_req_free(ior)        brelse(ior)
   
   /*
    * Redefine fields for drivers using new names
    */
   #define io_op           b_flags
   #define io_count        b_bcount
   #define io_error        b_error
   #define io_unit         b_dev
   #define io_recnum       b_blkno
   #define io_residual     b_resid
   #define io_data         b_un.b_addr
   #define io_done         b_iodone
   
   /*
    * Redefine fields for driver request list heads, using new names.
    */
   #define io_next         av_forw
   #define io_prev         av_back
   /*#define       io_next         b_actf*/
   /*#define       io_prev         b_actl*/
   #define io_link         b_forw
   #define io_rlink        b_back
   /*#define       io_count        b_active*/
   /*#define       io_residual     b_errcnt*/
   #define io_alloc_size   b_bufsize
   
   /*
    * Scratch temporary in io_req structure (for error handling)
    */
   #define io_temporary    b_pfcent
   
   /*
    * Redefine flags
    */
   #define IO_WRITE        B_WRITE
   #define IO_READ         B_READ
   #define IO_OPEN         B_OPEN
   #define IO_DONE         B_DONE
   #define IO_ERROR        B_ERROR
   #define IO_BUSY         B_BUSY
   #define IO_WANTED       B_WANTED
   #define IO_BAD          B_BAD
   #define IO_CALL         B_CALL
   #define IO_INTERNAL     B_MD1
   
   #define IO_SPARE_START  B_MD1
   
   #include <sys/disklabel.h>
   
   /* Error codes */
   
   #include <sys/errno.h>
   
   #define D_SUCCESS               ESUCCESS
   #define D_IO_ERROR              EIO
   #define D_NO_SUCH_DEVICE        ENXIO
   #define D_INVALID_SIZE          EINVAL
   #define D_ALREADY_OPEN          EBUSY
   #define D_INVALID_OPERATION     EINVAL
   #define D_NO_MEMORY             ENOMEM
   #define D_WOULD_BLOCK           EWOULDBLOCK
   #define D_DEVICE_DOWN           EIO
   #define D_READ_ONLY             EROFS
   
   /*
    * Debugging support
    */
   #define db_printf               kdbprintf
   #define db_printsym(s,m)        kdbpsymoff(s,1,"")
   
   /*
    * Miscellaneous utils
    */
   
   #define check_memory(addr,dow)  ((dow) ? wbadaddr(addr,4) : badaddr(addr,4))
   
   #include <sys/kernel.h>         /* for hz */
   #include <scsi/adapters/scsi_user_dma.h>
   
   #ifdef  DECSTATION
   #include <mach/mips/vm_param.h> /* for page size */
   #define ULTRIX_COMPAT   1       /* support for rzdisk disk formatter  */
   #endif  /*DECSTATION*/
   
   #endif  /*MACH_KERNEL*/
   
   #endif  /*_SCSI_COMPAT_30_*/

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