14Srgrimes/*- 24Srgrimes * Copyright (c) 1990 The Regents of the University of California. 34Srgrimes * All rights reserved. 44Srgrimes * 54Srgrimes * This code is derived from software contributed to Berkeley by 64Srgrimes * William Jolitz. 74Srgrimes * 84Srgrimes * Redistribution and use in source and binary forms, with or without 94Srgrimes * modification, are permitted provided that the following conditions 104Srgrimes * are met: 114Srgrimes * 1. Redistributions of source code must retain the above copyright 124Srgrimes * notice, this list of conditions and the following disclaimer. 134Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 144Srgrimes * notice, this list of conditions and the following disclaimer in the 154Srgrimes * documentation and/or other materials provided with the distribution. 164Srgrimes * 4. Neither the name of the University nor the names of its contributors 174Srgrimes * may be used to endorse or promote products derived from this software 184Srgrimes * without specific prior written permission. 194Srgrimes * 204Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 214Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 224Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 234Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 244Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 254Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 264Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 274Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 284Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 294Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 304Srgrimes * SUCH DAMAGE. 314Srgrimes * 32619Srgrimes * from: @(#)rtc.h 7.1 (Berkeley) 5/12/91 3350477Speter * $FreeBSD$ 344Srgrimes */ 354Srgrimes 36720Swollman#ifndef _I386_ISA_RTC_H_ 37720Swollman#define _I386_ISA_RTC_H_ 1 38720Swollman 394Srgrimes/* 4037556Sphk * MC146818 RTC Register locations 414Srgrimes */ 424Srgrimes 434Srgrimes#define RTC_SEC 0x00 /* seconds */ 444Srgrimes#define RTC_SECALRM 0x01 /* seconds alarm */ 454Srgrimes#define RTC_MIN 0x02 /* minutes */ 464Srgrimes#define RTC_MINALRM 0x03 /* minutes alarm */ 474Srgrimes#define RTC_HRS 0x04 /* hours */ 484Srgrimes#define RTC_HRSALRM 0x05 /* hours alarm */ 494Srgrimes#define RTC_WDAY 0x06 /* week day */ 504Srgrimes#define RTC_DAY 0x07 /* day of month */ 514Srgrimes#define RTC_MONTH 0x08 /* month of year */ 524Srgrimes#define RTC_YEAR 0x09 /* month of year */ 532074Swollman 544Srgrimes#define RTC_STATUSA 0x0a /* status register A */ 554Srgrimes#define RTCSA_TUP 0x80 /* time update, don't look now */ 5637556Sphk#define RTCSA_RESET 0x70 /* reset divider */ 572074Swollman#define RTCSA_DIVIDER 0x20 /* divider correct for 32768 Hz */ 5837556Sphk#define RTCSA_8192 0x03 /* 8192 Hz interrupt */ 592074Swollman#define RTCSA_4096 0x04 602074Swollman#define RTCSA_2048 0x05 612074Swollman#define RTCSA_1024 0x06 /* default for profiling */ 622074Swollman#define RTCSA_PROF RTCSA_1024 632074Swollman#define RTC_PROFRATE 1024 642074Swollman#define RTCSA_512 0x07 652074Swollman#define RTCSA_256 0x08 662074Swollman#define RTCSA_128 0x09 672074Swollman#define RTCSA_NOPROF RTCSA_128 682074Swollman#define RTC_NOPROFRATE 128 692074Swollman#define RTCSA_64 0x0a 7037556Sphk#define RTCSA_32 0x0b /* 32 Hz interrupt */ 714Srgrimes 724Srgrimes#define RTC_STATUSB 0x0b /* status register B */ 7337556Sphk#define RTCSB_DST 0x01 /* USA Daylight Savings Time enable */ 742913Sache#define RTCSB_24HR 0x02 /* 0 = 12 hours, 1 = 24 hours */ 752913Sache#define RTCSB_BCD 0x04 /* 0 = BCD, 1 = Binary coded time */ 762913Sache#define RTCSB_SQWE 0x08 /* 1 = output sqare wave at SQW pin */ 772913Sache#define RTCSB_UINTR 0x10 /* 1 = enable update-ended interrupt */ 782913Sache#define RTCSB_AINTR 0x20 /* 1 = enable alarm interrupt */ 792913Sache#define RTCSB_PINTR 0x40 /* 1 = enable periodic clock interrupt */ 802074Swollman#define RTCSB_HALT 0x80 /* stop clock updates */ 814Srgrimes 824Srgrimes#define RTC_INTR 0x0c /* status register C (R) interrupt source */ 834Srgrimes#define RTCIR_UPDATE 0x10 /* update intr */ 844Srgrimes#define RTCIR_ALARM 0x20 /* alarm intr */ 854Srgrimes#define RTCIR_PERIOD 0x40 /* periodic intr */ 864Srgrimes#define RTCIR_INT 0x80 /* interrupt output signal */ 874Srgrimes 884Srgrimes#define RTC_STATUSD 0x0d /* status register D (R) Lost Power */ 8937556Sphk#define RTCSD_PWR 0x80 /* clock power OK */ 904Srgrimes 914Srgrimes#define RTC_DIAG 0x0e /* status register E - bios diagnostic */ 924Srgrimes#define RTCDG_BITS "\020\010clock_battery\007ROM_cksum\006config_unit\005memory_size\004fixed_disk\003invalid_time" 934Srgrimes 944Srgrimes#define RTC_RESET 0x0f /* status register F - reset code byte */ 954Srgrimes#define RTCRS_RST 0x00 /* normal reset */ 964Srgrimes#define RTCRS_LOAD 0x04 /* load system */ 974Srgrimes 984Srgrimes#define RTC_FDISKETTE 0x10 /* diskette drive type in upper/lower nibble */ 994Srgrimes#define RTCFDT_NONE 0 /* none present */ 1004Srgrimes#define RTCFDT_360K 0x10 /* 360K */ 1014Srgrimes#define RTCFDT_12M 0x20 /* 1.2M */ 102873Sache#define RTCFDT_720K 0x30 /* 720K */ 1034Srgrimes#define RTCFDT_144M 0x40 /* 1.44M */ 10411375Sjoerg#define RTCFDT_288M_1 0x50 /* 2.88M, some BIOSes */ 1054968Sjoerg#define RTCFDT_288M 0x60 /* 2.88M */ 1064Srgrimes 1074Srgrimes#define RTC_BASELO 0x15 /* low byte of basemem size */ 1084Srgrimes#define RTC_BASEHI 0x16 /* high byte of basemem size */ 1094Srgrimes#define RTC_EXTLO 0x17 /* low byte of extended mem size */ 1104Srgrimes#define RTC_EXTHI 0x18 /* low byte of extended mem size */ 1114Srgrimes 1122913Sache#define RTC_CENTURY 0x32 /* current century */ 113178192Sphk 114178192Sphk#ifdef _KERNEL 115178192Sphkextern struct mtx clock_lock; 116191766Smavextern int atrtcclock_disable; 117178192Sphkint rtcin(int reg); 118178192Sphkvoid atrtc_restore(void); 119178192Sphkvoid writertc(int reg, u_char val); 120178192Sphk#endif 121178192Sphk 122720Swollman#endif /* _I386_ISA_RTC_H_ */ 123