Current Path : /sys/i386/isa/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/i386/isa/pmtimer.c |
/*- * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@FreeBSD.org> * All rights reserved. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/i386/isa/pmtimer.c 184386 2008-10-28 04:32:41Z imp $"); /* * Timer device driver for power management events. * The code for suspend/resume is derived from APM device driver. */ #include <sys/param.h> #include <sys/systm.h> #include <sys/bus.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/syslog.h> #include <machine/clock.h> #include <isa/isavar.h> static devclass_t pmtimer_devclass; /* reject any PnP devices for now */ static struct isa_pnp_id pmtimer_ids[] = { {0} }; static void pmtimer_identify(driver_t *driver, device_t parent) { device_t child; /* * Only add a child if one doesn't exist already. */ child = devclass_get_device(pmtimer_devclass, 0); if (child == NULL) { child = BUS_ADD_CHILD(parent, 0, "pmtimer", 0); if (child == NULL) panic("pmtimer_identify"); } } static int pmtimer_probe(device_t dev) { if (ISA_PNP_PROBE(device_get_parent(dev), dev, pmtimer_ids) == ENXIO) return (ENXIO); /* only one instance always */ return (device_get_unit(dev)); } static struct timeval suspend_time; static struct timeval diff_time; static int pmtimer_suspend(device_t dev) { int pl; pl = splsoftclock(); microtime(&diff_time); inittodr(0); microtime(&suspend_time); timevalsub(&diff_time, &suspend_time); splx(pl); return (0); } static int pmtimer_resume(device_t dev) { int pl; u_int second, minute, hour; struct timeval resume_time, tmp_time; /* modified for adjkerntz */ pl = splsoftclock(); timer_restore(); /* restore the all timers */ inittodr(0); /* adjust time to RTC */ microtime(&resume_time); getmicrotime(&tmp_time); timevaladd(&tmp_time, &diff_time); #ifdef FIXME /* XXX THIS DOESN'T WORK!!! */ time = tmp_time; #endif #ifdef PMTIMER_FIXUP_CALLTODO /* Calculate the delta time suspended */ timevalsub(&resume_time, &suspend_time); /* Fixup the calltodo list with the delta time. */ adjust_timeout_calltodo(&resume_time); #endif /* PMTIMER_FIXUP_CALLTODOK */ splx(pl); #ifndef PMTIMER_FIXUP_CALLTODO second = resume_time.tv_sec - suspend_time.tv_sec; #else /* PMTIMER_FIXUP_CALLTODO */ /* * We've already calculated resume_time to be the delta between * the suspend and the resume. */ second = resume_time.tv_sec; #endif /* PMTIMER_FIXUP_CALLTODO */ hour = second / 3600; second %= 3600; minute = second / 60; second %= 60; log(LOG_NOTICE, "wakeup from sleeping state (slept %02d:%02d:%02d)\n", hour, minute, second); return (0); } static device_method_t pmtimer_methods[] = { /* Device interface */ DEVMETHOD(device_identify, pmtimer_identify), DEVMETHOD(device_probe, pmtimer_probe), DEVMETHOD(device_attach, bus_generic_attach), DEVMETHOD(device_suspend, pmtimer_suspend), DEVMETHOD(device_resume, pmtimer_resume), { 0, 0 } }; static driver_t pmtimer_driver = { "pmtimer", pmtimer_methods, 1, /* no softc */ }; DRIVER_MODULE(pmtimer, isa, pmtimer_driver, pmtimer_devclass, 0, 0);