Add MI implementation of inittodr, todr_attach, and resettodr.
This is triggered upon __HAVE_GENRIC_TODR in machine/types.h. Conversion of evbmips port forthcoming.
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gdamore
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c583da0d13
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# $NetBSD: files,v 1.805 2006/09/01 22:38:27 cube Exp $
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# $NetBSD: files,v 1.806 2006/09/02 20:18:00 gdamore Exp $
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# @(#)files.newconf 7.5 (Berkeley) 5/10/93
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@ -1282,6 +1282,7 @@ file kern/kern_sysctl.c
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file kern/kern_tc.c
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file kern/kern_time.c
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file kern/kern_timeout.c
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file kern/kern_todr.c
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file kern/kern_uuid.c
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file kern/kern_xxx.c
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file kern/kgdb_stub.c kgdb
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@ -0,0 +1,195 @@
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/* $NetBSD: kern_todr.c,v 1.1 2006/09/02 20:18:00 gdamore Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department and Ralph Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah Hdr: clock.c 1.18 91/01/21
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*
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* @(#)clock.c 8.1 (Berkeley) 6/10/93
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*/
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/*
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* Copyright (c) 1988 University of Utah.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department and Ralph Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah Hdr: clock.c 1.18 91/01/21
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*
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* @(#)clock.c 8.1 (Berkeley) 6/10/93
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: kern_todr.c,v 1.1 2006/09/02 20:18:00 gdamore Exp $");
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#include <sys/param.h>
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#ifdef __HAVE_GENERIC_TODR
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/timetc.h>
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#include <dev/clock_subr.h> /* hmm.. this should probably move to sys */
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static todr_chip_handle_t todr_handle = NULL;
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/*
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* Attach the clock device to todr_handle.
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*/
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void
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todr_attach(todr_chip_handle_t todr)
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{
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if (todr_handle) {
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printf("todr_attach: TOD already configured\n");
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return;
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}
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todr_handle = todr;
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}
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/*
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* Set up the system's time, given a `reasonable' time value.
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*/
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void
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inittodr(time_t base)
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{
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int badbase = 0, waszero = base == 0;
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#ifdef __HAVE_TIMECOUNTER
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struct timeval time;
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struct timespec ts;
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#endif
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if (base < 5 * SECYR) {
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/*
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* If base is 0, assume filesystem time is just unknown
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* in stead of preposterous. Don't bark.
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*/
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if (base != 0)
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printf("WARNING: preposterous time in file system\n");
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/* not going to use it anyway, if the chip is readable */
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base = 21*SECYR + 186*SECDAY + SECDAY/2;
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badbase = 1;
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}
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if ((todr_handle == NULL) ||
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(todr_gettime(todr_handle, &time) != 0) ||
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(time.tv_sec == 0)) {
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if (todr_handle != NULL)
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printf("WARNING: preposterous TOD clock time");
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else
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printf("WARNING: no TOD clock present");
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/*
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* Believe the time in the file system for lack of
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* anything better, resetting the clock.
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*/
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time.tv_sec = base;
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#ifdef __HAVE_TIMECOUNTER
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ts.tv_sec = base;
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ts.tv_nsec = 0;
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tc_setclock(&ts);
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#endif
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if (!badbase)
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resettodr();
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} else {
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int deltat = time.tv_sec - base;
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#ifdef __HAVE_TIMECOUNTER
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ts.tv_sec = time.tv_sec;
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ts.tv_nsec = time.tv_usec * 1000;
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tc_setclock(&ts);
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#endif
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if (deltat < 0)
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deltat = -deltat;
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if (waszero || deltat < 2 * SECDAY)
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return;
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printf("WARNING: clock %s %d days",
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time.tv_sec < base ? "lost" : "gained", deltat / SECDAY);
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}
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printf(" -- CHECK AND RESET THE DATE!\n");
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}
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/*
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* Reset the TODR based on the time value; used when the TODR
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* has a preposterous value and also when the time is reset
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* by the stime system call. Also called when the TODR goes past
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* TODRZERO + 100*(SECYEAR+2*SECDAY) (e.g. on Jan 2 just after midnight)
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* to wrap the TODR around.
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*/
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void
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resettodr(void)
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{
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#ifdef __HAVE_TIMECOUNTER
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struct timeval time;
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getmicrotime(&time);
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#endif
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if (time.tv_sec == 0)
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return;
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if (todr_handle)
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if (todr_settime(todr_handle, &time) != 0)
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printf("Cannot set TOD clock time\n");
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}
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#endif /* __HAVE_GENERIC_TODR */
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