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Annotation of sys/arch/hp300/dev/apcireg.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: apcireg.h,v 1.2 1997/07/06 08:01:45 downsj Exp $      */
                      2: /*     $NetBSD: apcireg.h,v 1.2 1997/05/12 08:14:01 thorpej Exp $      */
                      3:
                      4: /*
                      5:  * Copyright (c) 1997 Michael Smith.  All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  *
                     16:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
                     17:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     18:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     19:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     20:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     21:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     22:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     23:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     24:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     25:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     26:  * SUCH DAMAGE.
                     27:  */
                     28:
                     29: #include <hp300/dev/iotypes.h>
                     30:
                     31: struct apciregs {
                     32:        vu_char         ap_data;
                     33:        u_char          pad0[3];
                     34:        vu_char         ap_ier;
                     35:        u_char          pad1[3];
                     36:        vu_char         ap_iir;
                     37: #define        ap_fifo ap_iir
                     38:        u_char          pad2[3];
                     39:        vu_char         ap_cfcr;
                     40:        u_char          pad3[3];
                     41:        vu_char         ap_mcr;
                     42:        u_char          pad4[3];
                     43:        vu_char         ap_lsr;
                     44:        u_char          pad5[3];
                     45:        vu_char         ap_msr;
                     46:        u_char          pad6[3];
                     47:        vu_char         ap_scratch;
                     48: };
                     49:
                     50: /* max number of apci ports */
                     51: #define        APCI_MAXPORT    4
                     52:
                     53: /*
                     54:  * baudrate divisor calculations.
                     55:  *
                     56:  * The input clock frequency appears to be 8.0064MHz, giving a scale
                     57:  * factor of 500400.  (Using exactly 8MHz gives framing errors with
                     58:  * the Apollo keyboard.)
                     59:  */
                     60: #define        APCIBRD(x)      (500000 / (x))