| atrtc.c (54890) | atrtc.c (55098) |
|---|---|
| 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz and Don Ahn. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)clock.c 7.2 (Berkeley) 5/12/91 | 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz and Don Ahn. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)clock.c 7.2 (Berkeley) 5/12/91 |
| 37 * $FreeBSD: head/sys/isa/atrtc.c 54890 1999-12-20 15:11:31Z peter $ | 37 * $FreeBSD: head/sys/isa/atrtc.c 55098 1999-12-25 15:30:31Z bde $ |
| 38 */ 39 40/* 41 * Routines to handle clock hardware. 42 */ 43 44/* 45 * inittodr, settodr and support routines written --- 499 unchanged lines hidden (view full) --- 545/* 546 * RTC support routines 547 */ 548 549int 550rtcin(reg) 551 int reg; 552{ | 38 */ 39 40/* 41 * Routines to handle clock hardware. 42 */ 43 44/* 45 * inittodr, settodr and support routines written --- 499 unchanged lines hidden (view full) --- 545/* 546 * RTC support routines 547 */ 548 549int 550rtcin(reg) 551 int reg; 552{ |
| 553 int s; |
|
| 553 u_char val; 554 | 554 u_char val; 555 |
| 556 s = splhigh(); |
|
| 555 outb(IO_RTC, reg); 556 inb(0x84); 557 val = inb(IO_RTC + 1); 558 inb(0x84); | 557 outb(IO_RTC, reg); 558 inb(0x84); 559 val = inb(IO_RTC + 1); 560 inb(0x84); |
| 561 splx(s); |
|
| 559 return (val); 560} 561 562static __inline void 563writertc(u_char reg, u_char val) 564{ | 562 return (val); 563} 564 565static __inline void 566writertc(u_char reg, u_char val) 567{ |
| 568 int s; 569 570 s = splhigh(); |
|
| 565 inb(0x84); 566 outb(IO_RTC, reg); 567 inb(0x84); 568 outb(IO_RTC + 1, val); 569 inb(0x84); /* XXX work around wrong order in rtcin() */ | 571 inb(0x84); 572 outb(IO_RTC, reg); 573 inb(0x84); 574 outb(IO_RTC + 1, val); 575 inb(0x84); /* XXX work around wrong order in rtcin() */ |
| 576 splx(s); |
|
| 570} 571 572static __inline int 573readrtc(int port) 574{ 575 return(bcd2bin(rtcin(port))); 576} 577 --- 264 unchanged lines hidden (view full) --- 842 } 843 844 /* Look if we have a RTC present and the time is valid */ 845 if (!(rtcin(RTC_STATUSD) & RTCSD_PWR)) 846 goto wrong_time; 847 848 /* wait for time update to complete */ 849 /* If RTCSA_TUP is zero, we have at least 244us before next update */ | 577} 578 579static __inline int 580readrtc(int port) 581{ 582 return(bcd2bin(rtcin(port))); 583} 584 --- 264 unchanged lines hidden (view full) --- 849 } 850 851 /* Look if we have a RTC present and the time is valid */ 852 if (!(rtcin(RTC_STATUSD) & RTCSD_PWR)) 853 goto wrong_time; 854 855 /* wait for time update to complete */ 856 /* If RTCSA_TUP is zero, we have at least 244us before next update */ |
| 850 while (rtcin(RTC_STATUSA) & RTCSA_TUP); | 857 s = splhigh(); 858 while (rtcin(RTC_STATUSA) & RTCSA_TUP) { 859 splx(s); 860 s = splhigh(); 861 } |
| 851 852 days = 0; 853#ifdef USE_RTC_CENTURY 854 year = readrtc(RTC_YEAR) + readrtc(RTC_CENTURY) * 100; 855#else 856 year = readrtc(RTC_YEAR) + 1900; 857 if (year < 1970) 858 year += 100; 859#endif | 862 863 days = 0; 864#ifdef USE_RTC_CENTURY 865 year = readrtc(RTC_YEAR) + readrtc(RTC_CENTURY) * 100; 866#else 867 year = readrtc(RTC_YEAR) + 1900; 868 if (year < 1970) 869 year += 100; 870#endif |
| 860 if (year < 1970) | 871 if (year < 1970) { 872 splx(s); |
| 861 goto wrong_time; | 873 goto wrong_time; |
| 874 } |
|
| 862 month = readrtc(RTC_MONTH); 863 for (m = 1; m < month; m++) 864 days += daysinmonth[m-1]; 865 if ((month > 2) && LEAPYEAR(year)) 866 days ++; 867 days += readrtc(RTC_DAY) - 1; 868 yd = days; 869 for (y = 1970; y < year; y++) --- 5 unchanged lines hidden (view full) --- 875 /* sec now contains the number of seconds, since Jan 1 1970, 876 in the local time zone */ 877 878 sec += tz.tz_minuteswest * 60 + (wall_cmos_clock ? adjkerntz : 0); 879 880 y = time_second - sec; 881 if (y <= -2 || y >= 2) { 882 /* badly off, adjust it */ | 875 month = readrtc(RTC_MONTH); 876 for (m = 1; m < month; m++) 877 days += daysinmonth[m-1]; 878 if ((month > 2) && LEAPYEAR(year)) 879 days ++; 880 days += readrtc(RTC_DAY) - 1; 881 yd = days; 882 for (y = 1970; y < year; y++) --- 5 unchanged lines hidden (view full) --- 888 /* sec now contains the number of seconds, since Jan 1 1970, 889 in the local time zone */ 890 891 sec += tz.tz_minuteswest * 60 + (wall_cmos_clock ? adjkerntz : 0); 892 893 y = time_second - sec; 894 if (y <= -2 || y >= 2) { 895 /* badly off, adjust it */ |
| 883 s = splclock(); | |
| 884 ts.tv_sec = sec; 885 ts.tv_nsec = 0; 886 set_timecounter(&ts); | 896 ts.tv_sec = sec; 897 ts.tv_nsec = 0; 898 set_timecounter(&ts); |
| 887 splx(s); | |
| 888 } | 899 } |
| 900 splx(s); |
|
| 889 return; 890 891wrong_time: 892 printf("Invalid time in real time clock.\n"); 893 printf("Check and reset the date immediately!\n"); 894} 895 896/* --- 304 unchanged lines hidden --- | 901 return; 902 903wrong_time: 904 printf("Invalid time in real time clock.\n"); 905 printf("Check and reset the date immediately!\n"); 906} 907 908/* --- 304 unchanged lines hidden --- |