165865Siwasaki/*- 265865Siwasaki * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@FreeBSD.org> 365865Siwasaki * All rights reserved. 465865Siwasaki * 565865Siwasaki * Redistribution and use in source and binary forms, with or without 665865Siwasaki * modification, are permitted provided that the following conditions 765865Siwasaki * are met: 865865Siwasaki * 1. Redistributions of source code must retain the above copyright 965865Siwasaki * notice, this list of conditions and the following disclaimer. 1065865Siwasaki * 2. Redistributions in binary form must reproduce the above copyright 1165865Siwasaki * notice, this list of conditions and the following disclaimer in the 1265865Siwasaki * documentation and/or other materials provided with the distribution. 1365865Siwasaki * 1465865Siwasaki * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1565865Siwasaki * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1665865Siwasaki * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1765865Siwasaki * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1865865Siwasaki * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1965865Siwasaki * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2065865Siwasaki * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2165865Siwasaki * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2265865Siwasaki * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2365865Siwasaki * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2465865Siwasaki * SUCH DAMAGE. 2565865Siwasaki */ 2665865Siwasaki 27115703Sobrien#include <sys/cdefs.h> 28115703Sobrien__FBSDID("$FreeBSD: releng/11.0/sys/i386/isa/pmtimer.c 247088 2013-02-21 07:16:40Z imp $"); 29115703Sobrien 3065865Siwasaki/* 3165865Siwasaki * Timer device driver for power management events. 3265865Siwasaki * The code for suspend/resume is derived from APM device driver. 3365865Siwasaki */ 3465865Siwasaki 3565865Siwasaki#include <sys/param.h> 3665865Siwasaki#include <sys/systm.h> 3765865Siwasaki#include <sys/bus.h> 3865865Siwasaki#include <sys/kernel.h> 39129876Sphk#include <sys/module.h> 4065865Siwasaki#include <sys/syslog.h> 4165865Siwasaki#include <machine/clock.h> 4265865Siwasaki 4365865Siwasaki#include <isa/isavar.h> 4465865Siwasaki 45105730Sjhbstatic devclass_t pmtimer_devclass; 46105730Sjhb 4765865Siwasaki/* reject any PnP devices for now */ 4865865Siwasakistatic struct isa_pnp_id pmtimer_ids[] = { 4965865Siwasaki {0} 5065865Siwasaki}; 5165865Siwasaki 52105730Sjhbstatic void 53105730Sjhbpmtimer_identify(driver_t *driver, device_t parent) 54105730Sjhb{ 55105730Sjhb device_t child; 56105730Sjhb 57105730Sjhb /* 58105730Sjhb * Only add a child if one doesn't exist already. 59105730Sjhb */ 60105730Sjhb child = devclass_get_device(pmtimer_devclass, 0); 61105730Sjhb if (child == NULL) { 62105730Sjhb child = BUS_ADD_CHILD(parent, 0, "pmtimer", 0); 63105730Sjhb if (child == NULL) 64105730Sjhb panic("pmtimer_identify"); 65105730Sjhb } 66105730Sjhb} 67105730Sjhb 6865865Siwasakistatic int 6965865Siwasakipmtimer_probe(device_t dev) 7065865Siwasaki{ 7165865Siwasaki 72184386Simp if (ISA_PNP_PROBE(device_get_parent(dev), dev, pmtimer_ids) == ENXIO) 7365865Siwasaki return (ENXIO); 7465865Siwasaki 7565865Siwasaki /* only one instance always */ 7665865Siwasaki return (device_get_unit(dev)); 7765865Siwasaki} 7865865Siwasaki 7965865Siwasakistatic struct timeval suspend_time; 8065865Siwasakistatic struct timeval diff_time; 8165865Siwasaki 8265865Siwasakistatic int 8365865Siwasakipmtimer_suspend(device_t dev) 8465865Siwasaki{ 8565865Siwasaki 8665865Siwasaki microtime(&diff_time); 8765865Siwasaki inittodr(0); 8865865Siwasaki microtime(&suspend_time); 8965865Siwasaki timevalsub(&diff_time, &suspend_time); 9065865Siwasaki return (0); 9165865Siwasaki} 9265865Siwasaki 9365865Siwasakistatic int 9465865Siwasakipmtimer_resume(device_t dev) 9565865Siwasaki{ 9665865Siwasaki u_int second, minute, hour; 9765865Siwasaki struct timeval resume_time, tmp_time; 9865865Siwasaki 9965865Siwasaki /* modified for adjkerntz */ 10082971Siwasaki timer_restore(); /* restore the all timers */ 10165865Siwasaki inittodr(0); /* adjust time to RTC */ 10265865Siwasaki microtime(&resume_time); 10365865Siwasaki getmicrotime(&tmp_time); 10465865Siwasaki timevaladd(&tmp_time, &diff_time); 10565865Siwasaki 10665865Siwasaki#ifdef FIXME 10765865Siwasaki /* XXX THIS DOESN'T WORK!!! */ 10865865Siwasaki time = tmp_time; 10965865Siwasaki#endif 11065865Siwasaki 11165865Siwasaki#ifdef PMTIMER_FIXUP_CALLTODO 11265865Siwasaki /* Calculate the delta time suspended */ 11365865Siwasaki timevalsub(&resume_time, &suspend_time); 11465865Siwasaki /* Fixup the calltodo list with the delta time. */ 11565865Siwasaki adjust_timeout_calltodo(&resume_time); 11665865Siwasaki /* 11765865Siwasaki * We've already calculated resume_time to be the delta between 11865865Siwasaki * the suspend and the resume. 11965865Siwasaki */ 12065865Siwasaki second = resume_time.tv_sec; 121247088Simp#else /* !PMTIMER_FIXUP_CALLTODO */ 122247088Simp second = resume_time.tv_sec - suspend_time.tv_sec; 12365865Siwasaki#endif /* PMTIMER_FIXUP_CALLTODO */ 12465865Siwasaki hour = second / 3600; 12565865Siwasaki second %= 3600; 12665865Siwasaki minute = second / 60; 12765865Siwasaki second %= 60; 12865865Siwasaki log(LOG_NOTICE, "wakeup from sleeping state (slept %02d:%02d:%02d)\n", 12965865Siwasaki hour, minute, second); 13065865Siwasaki return (0); 13165865Siwasaki} 13265865Siwasaki 13365865Siwasakistatic device_method_t pmtimer_methods[] = { 13465865Siwasaki /* Device interface */ 135105730Sjhb DEVMETHOD(device_identify, pmtimer_identify), 13665865Siwasaki DEVMETHOD(device_probe, pmtimer_probe), 13765865Siwasaki DEVMETHOD(device_attach, bus_generic_attach), 13865865Siwasaki DEVMETHOD(device_suspend, pmtimer_suspend), 13965865Siwasaki DEVMETHOD(device_resume, pmtimer_resume), 14065865Siwasaki { 0, 0 } 14165865Siwasaki}; 14265865Siwasaki 14365865Siwasakistatic driver_t pmtimer_driver = { 14465865Siwasaki "pmtimer", 14565865Siwasaki pmtimer_methods, 14665865Siwasaki 1, /* no softc */ 14765865Siwasaki}; 14865865Siwasaki 14965865SiwasakiDRIVER_MODULE(pmtimer, isa, pmtimer_driver, pmtimer_devclass, 0, 0); 150