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- /*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * William Jolitz.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #ifndef _I386_ISA_RTC_H_
- #define _I386_ISA_RTC_H_ 1
- /*
- * MC146818 RTC Register locations
- */
- #define RTC_SEC 0x00 /* seconds */
- #define RTC_SECALRM 0x01 /* seconds alarm */
- #define RTC_MIN 0x02 /* minutes */
- #define RTC_MINALRM 0x03 /* minutes alarm */
- #define RTC_HRS 0x04 /* hours */
- #define RTC_HRSALRM 0x05 /* hours alarm */
- #define RTC_WDAY 0x06 /* week day */
- #define RTC_DAY 0x07 /* day of month */
- #define RTC_MONTH 0x08 /* month of year */
- #define RTC_YEAR 0x09 /* month of year */
- #define RTC_STATUSA 0x0a /* status register A */
- #define RTCSA_TUP 0x80 /* time update, don't look now */
- #define RTCSA_RESET 0x70 /* reset divider */
- #define RTCSA_DIVIDER 0x20 /* divider correct for 32768 Hz */
- #define RTCSA_8192 0x03 /* 8192 Hz interrupt */
- #define RTCSA_4096 0x04
- #define RTCSA_2048 0x05
- #define RTCSA_1024 0x06 /* default for profiling */
- #define RTCSA_PROF RTCSA_1024
- #define RTC_PROFRATE 1024
- #define RTCSA_512 0x07
- #define RTCSA_256 0x08
- #define RTCSA_128 0x09
- #define RTCSA_NOPROF RTCSA_128
- #define RTC_NOPROFRATE 128
- #define RTCSA_64 0x0a
- #define RTCSA_32 0x0b /* 32 Hz interrupt */
- #define RTC_STATUSB 0x0b /* status register B */
- #define RTCSB_DST 0x01 /* USA Daylight Savings Time enable */
- #define RTCSB_24HR 0x02 /* 0 = 12 hours, 1 = 24 hours */
- #define RTCSB_BCD 0x04 /* 0 = BCD, 1 = Binary coded time */
- #define RTCSB_SQWE 0x08 /* 1 = output sqare wave at SQW pin */
- #define RTCSB_UINTR 0x10 /* 1 = enable update-ended interrupt */
- #define RTCSB_AINTR 0x20 /* 1 = enable alarm interrupt */
- #define RTCSB_PINTR 0x40 /* 1 = enable periodic clock interrupt */
- #define RTCSB_HALT 0x80 /* stop clock updates */
- #define RTC_INTR 0x0c /* status register C (R) interrupt source */
- #define RTCIR_UPDATE 0x10 /* update intr */
- #define RTCIR_ALARM 0x20 /* alarm intr */
- #define RTCIR_PERIOD 0x40 /* periodic intr */
- #define RTCIR_INT 0x80 /* interrupt output signal */
- #define RTC_STATUSD 0x0d /* status register D (R) Lost Power */
- #define RTCSD_PWR 0x80 /* clock power OK */
- #define RTC_DIAG 0x0e /* status register E - bios diagnostic */
- #define RTCDG_BITS "\020\010clock_battery\007ROM_cksum\006config_unit\005memory_size\004fixed_disk\003invalid_time"
- #define RTC_RESET 0x0f /* status register F - reset code byte */
- #define RTCRS_RST 0x00 /* normal reset */
- #define RTCRS_LOAD 0x04 /* load system */
- #define RTC_FDISKETTE 0x10 /* diskette drive type in upper/lower nibble */
- #define RTCFDT_NONE 0 /* none present */
- #define RTCFDT_360K 0x10 /* 360K */
- #define RTCFDT_12M 0x20 /* 1.2M */
- #define RTCFDT_720K 0x30 /* 720K */
- #define RTCFDT_144M 0x40 /* 1.44M */
- #define RTCFDT_288M_1 0x50 /* 2.88M, some BIOSes */
- #define RTCFDT_288M 0x60 /* 2.88M */
- #define RTC_BASELO 0x15 /* low byte of basemem size */
- #define RTC_BASEHI 0x16 /* high byte of basemem size */
- #define RTC_EXTLO 0x17 /* low byte of extended mem size */
- #define RTC_EXTHI 0x18 /* low byte of extended mem size */
- #define RTC_CENTURY 0x32 /* current century */
- #ifdef _KERNEL
- extern struct mtx atrtc_time_lock;
- extern int atrtcclock_disable;
- int rtcin(int reg);
- void atrtc_restore(void);
- void writertc(int reg, u_char val);
- #endif
- #endif /* _I386_ISA_RTC_H_ */
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