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Annotation of sys/arch/macppc/dev/viareg.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: viareg.h,v 1.4 2002/06/07 07:14:48 miod Exp $ */
                      2: /*     $NetBSD: viareg.h,v 1.2 1998/10/20 14:56:30 tsubai Exp $        */
                      3:
                      4: /*-
                      5:  * Copyright (C) 1993  Allen K. Briggs, Chris P. Caputo,
                      6:  *                     Michael L. Finch, Bradley A. Grantham, and
                      7:  *                     Lawrence A. Kesteloot
                      8:  * All rights reserved.
                      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:  * 3. All advertising materials mentioning features or use of this software
                     19:  *    must display the following acknowledgement:
                     20:  *     This product includes software developed by the Alice Group.
                     21:  * 4. The names of the Alice Group or any of its members may not be used
                     22:  *    to endorse or promote products derived from this software without
                     23:  *    specific prior written permission.
                     24:  *
                     25:  * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR
                     26:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     27:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     28:  * IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT,
                     29:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     30:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     31:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     32:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     33:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
                     34:  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     35:  *
                     36:  */
                     37: /*
                     38:
                     39:        Prototype VIA control definitions
                     40:
                     41:        06/04/92,22:33:57 BG Let's see what I can do.
                     42:
                     43: */
                     44:
                     45: extern volatile unsigned char *Via1Base;
                     46: #define VIA1_addr      Via1Base        /* at PA 0x50f00000 */
                     47:
                     48: #define VIA1           0
                     49: #define VIA2           0
                     50:
                     51:        /* VIA interface registers */
                     52: #define vBufA          0x1e00  /* register A */
                     53: #define vBufB          0       /* register B */
                     54: #define vDirA          0x0600  /* data direction register */
                     55: #define vDirB          0x0400  /* data direction register */
                     56: #define vT1C           0x0800
                     57: #define vT1CH          0x0a00
                     58: #define vT1L           0x0c00
                     59: #define vT1LH          0x0e00
                     60: #define vT2C           0x1000
                     61: #define vT2CH          0x1200
                     62: #define vSR            0x1400  /* shift register */
                     63: #define vACR           0x1600  /* aux control register */
                     64: #define vIFR           0x1a00  /* interrupt flag register */
                     65: #define vIER           0x1c00  /* interrupt enable register */
                     66:
                     67: #define via_reg(v, r) (*(Via1Base + (r)))
                     68:
                     69: #include <machine/pio.h>
                     70:
                     71: static __inline void
                     72: via_reg_and(int ign, int reg, int val)
                     73: {
                     74:        volatile unsigned char *addr = Via1Base + reg;
                     75:
                     76:        out8(addr, in8(addr) & val);
                     77: }
                     78:
                     79: static __inline void
                     80: via_reg_or(int ign, int reg, int val)
                     81: {
                     82:        volatile unsigned char *addr = Via1Base + reg;
                     83:
                     84:        out8(addr, in8(addr) | val);
                     85: }
                     86:
                     87: static __inline void
                     88: via_reg_xor(int ign, int reg, int val)
                     89: {
                     90:        volatile unsigned char *addr = Via1Base + reg;
                     91:
                     92:        out8(addr, in8(addr) ^ val);
                     93: }
                     94:
                     95: static __inline int
                     96: read_via_reg(int ign, int reg)
                     97: {
                     98:        volatile unsigned char *addr = Via1Base + reg;
                     99:
                    100:        return in8(addr);
                    101: }
                    102:
                    103: static __inline void
                    104: write_via_reg(int ign, int reg, int val)
                    105: {
                    106:        volatile unsigned char *addr = Via1Base + reg;
                    107:
                    108:        out8(addr, val);
                    109: }