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      1 /*	$NetBSD: bugsyscalls.S,v 1.3 2011/01/19 09:03:15 he Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Steve C. Woodford.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <machine/asm.h>
     33 
     34 #define	BSYS(num)	addi %r10,0,num ; sc
     35 
     36 
     37 /*
     38  * char bugsys_inchr(void);
     39  *
     40  * Blocks until a character is received from the console.
     41  * Returns character.
     42  */
     43 ENTRY(bugsys_inchr)
     44 	BSYS(0x0000)
     45 	blr
     46 
     47 /*
     48  * void bugsys_outchr(char ch)
     49  */
     50 ENTRY(bugsys_outchr)
     51 	BSYS(0x0020)
     52 	blr
     53 
     54 /*
     55  * int bugsys_instat(void);
     56  *
     57  * Returns zero if no characters are waiting to be read
     58  * from the console. (i.e. bugsys_inchr() would block).
     59  * Otherwise, it returns a non-zero value.
     60  */
     61 ENTRY(bugsys_instat)
     62 	BSYS(0x0002)
     63 	li	%r4,0x8
     64 	and	%r3,%r3,%r4
     65 	blr
     66 
     67 /*
     68  * int bugsys_dskrd(struct bug_diskio *dcmd);
     69  *
     70  * Read data from disk according to the parameters specified
     71  * in the `dcmd' data structure.
     72  *
     73  * Returns zero on success, non-zero on failure.
     74  */
     75 ENTRY(bugsys_dskrd)
     76 	BSYS(0x0010)
     77 	li	%r4,0x8
     78 	and	%r3,%r3,%r4
     79 	blr
     80 
     81 /*
     82  * int bugsys_dskwr(struct bug_diskio *dcmd);
     83  *
     84  * Write data to disk according to the parameters specified
     85  * in the `dcmd' data structure.
     86  *
     87  * Returns zero on success, non-zero on failure.
     88  */
     89 ENTRY(bugsys_dskwr)
     90 	BSYS(0x0011)
     91 	li	%r4,0x8
     92 	and	%r3,%r3,%r4
     93 	blr
     94 
     95 /*
     96  * int bugsys_netio(struct bug_netcmd *ncmd);
     97  *
     98  * Performs an I/O operation to/from a network device as
     99  * specified in the `ncmd' data structure.
    100  *
    101  * Returns zero on success, non-zero on failure.
    102  */
    103 ENTRY(bugsys_netio)
    104 	BSYS(0x001d)
    105 	li	%r4,0x8
    106 	and	%r3,%r3,%r4
    107 	blr
    108 
    109 /*
    110  * void bugsys_delay(int );
    111  *
    112  * Suspend processing for the specified number of milli-seconds
    113  */
    114 ENTRY(bugsys_delay)
    115 	BSYS(0x0043)
    116 	blr
    117 
    118 /*
    119  * struct bug_boardid *bugsys_brdid(void);
    120  *
    121  * Returns a pointer to the board-id structure.
    122  */
    123 ENTRY(bugsys_brdid)
    124 	BSYS(0x0070)
    125 	blr
    126 
    127 /*
    128  * struct bug_ioinquiry *bugsys_ioinq(void);
    129  *
    130  * Returns a pointer to the ioinq structure.
    131  */
    132 ENTRY(bugsys_ioinq)
    133 	BSYS(0x0120)
    134 	blr
    135 
    136 /*
    137  * void bugsys_rtc_rd(struct bug_rtc_rd *);
    138  *
    139  * Reads the current time from the RTC chip.
    140  */
    141 ENTRY(bugsys_rtc_rd)
    142 	BSYS(0x0053)
    143 	blr
    144