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Annotation of Gnu-Mach/device/buf.h, revision 1.1.1.2

1.1       root        1: /* 
                      2:  * Mach Operating System
                      3:  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
                      4:  * All Rights Reserved.
                      5:  * 
                      6:  * Permission to use, copy, modify and distribute this software and its
                      7:  * documentation is hereby granted, provided that both the copyright
                      8:  * notice and this permission notice appear in all copies of the
                      9:  * software, derivative works or modified versions, and any portions
                     10:  * thereof, and that both notices appear in supporting documentation.
                     11:  * 
                     12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
                     13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
                     14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
                     15:  * 
                     16:  * Carnegie Mellon requests users of this software to return to
                     17:  * 
                     18:  *  Software Distribution Coordinator  or  [email protected]
                     19:  *  School of Computer Science
                     20:  *  Carnegie Mellon University
                     21:  *  Pittsburgh PA 15213-3890
                     22:  * 
                     23:  * any improvements or extensions that they make and grant Carnegie Mellon
                     24:  * the rights to redistribute these changes.
                     25:  */
                     26: /*
                     27:  *     Author: David B. Golub, Carnegie Mellon University
                     28:  *     Date:   3/90
                     29:  *
                     30:  *     Definitions to make new IO structures look like old ones
                     31:  */
                     32: 
                     33: /*
                     34:  * io_req and fields
                     35:  */
                     36: #include <device/io_req.h>
                     37: 
                     38: #define        buf     io_req
                     39: 
                     40: /*
                     41:  * Redefine fields for drivers using old names
                     42:  */
                     43: #define        b_flags         io_op
                     44: #define        b_bcount        io_count
                     45: #define        b_error         io_error
                     46: #define        b_dev           io_unit
                     47: #define        b_blkno         io_recnum
                     48: #define        b_resid         io_residual
                     49: #define        b_un            io_un
                     50: #define        b_addr          data
                     51: #define        av_forw         io_next
                     52: #define        av_back         io_prev
                     53: #define b_physblock     io_physrec
                     54: #define b_blocktotal    io_rectotal
                     55: 
                     56: /*
                     57:  * Redefine fields for driver request list heads, using old names.
                     58:  */
                     59: #define        b_actf          io_next
                     60: #define        b_actl          io_prev
                     61: #define        b_forw          io_link
                     62: #define        b_back          io_rlink
                     63: #define        b_active        io_count
                     64: #define        b_errcnt        io_residual
                     65: #define        b_bufsize       io_alloc_size
                     66: 
                     67: /*
                     68:  * Redefine flags
                     69:  */
                     70: #define        B_WRITE         IO_WRITE
                     71: #define        B_READ          IO_READ
                     72: #define        B_OPEN          IO_OPEN
                     73: #define        B_DONE          IO_DONE
                     74: #define        B_ERROR         IO_ERROR
                     75: #define        B_BUSY          IO_BUSY
                     76: #define        B_WANTED        IO_WANTED
                     77: #define        B_BAD           IO_BAD
                     78: #define        B_CALL          IO_CALL
                     79: 
                     80: #define        B_MD1           IO_SPARE_START
                     81: 
                     82: /*
                     83:  * Redefine uio structure
                     84:  */
                     85: #define        uio     io_req
                     86: 
                     87: /*
                     88:  * Redefine physio routine
                     89:  */
                     90: #define        physio(strat, xbuf, dev, ops, minphys, ior) \
                     91:                block_io(strat, minphys, ior)
                     92: 
                     93: /*
                     94:  * Export standard minphys routine.
                     95:  */
1.1.1.2 ! root       96: extern void minphys(io_req_t);
1.1       root       97: 
                     98: /*
                     99:  * Alternate name for iodone
                    100:  */
                    101: #define        biodone iodone
                    102: #define biowait iowait

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