Date: Thu, 23 Feb 2012 22:10:49 +0000 (UTC) From: Jung-uk Kim <jkim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r232083 - in stable/9: etc sys/dev/acpica Message-ID: <201202232210.q1NMAn7a026317@svn.freebsd.org>
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Author: jkim Date: Thu Feb 23 22:10:49 2012 New Revision: 232083 URL: http://svn.freebsd.org/changeset/base/232083 Log: MFC: r231226, r231295 Revert r211288 and move the logic to the acpi_timer itself. Modified: stable/9/etc/rc.resume stable/9/etc/rc.suspend stable/9/sys/dev/acpica/acpi_timer.c Directory Properties: stable/9/etc/ (props changed) stable/9/sys/ (props changed) Modified: stable/9/etc/rc.resume ============================================================================== --- stable/9/etc/rc.resume Thu Feb 23 22:03:20 2012 (r232082) +++ stable/9/etc/rc.resume Thu Feb 23 22:10:49 2012 (r232083) @@ -43,12 +43,6 @@ if [ -r /var/run/rc.suspend.pid ]; then echo 'rc.resume: killed rc.suspend that was still around' fi -if [ -r /var/run/rc.suspend.tch ]; then - _t=`cat /var/run/rc.suspend.tch` - /sbin/sysctl -n kern.timecounter.hardware=$_t > /dev/null 2>&1 - /bin/rm -f /var/run/rc.suspend.tch -fi - # Turns on a power supply of a card in the slot inactivated. # See also contrib/pccardq.c (only for PAO users). # pccardq | awk -F '~' '$5 == "inactive" \ Modified: stable/9/etc/rc.suspend ============================================================================== --- stable/9/etc/rc.suspend Thu Feb 23 22:03:20 2012 (r232082) +++ stable/9/etc/rc.suspend Thu Feb 23 22:10:49 2012 (r232083) @@ -43,18 +43,6 @@ fi echo $$ 2> /dev/null > /var/run/rc.suspend.pid -_t=`/sbin/sysctl -n kern.timecounter.hardware 2> /dev/null` -case ${_t#ACPI-} in -fast|safe) - /bin/rm -f /var/run/rc.suspend.tch - ;; -*) - { /sbin/sysctl -n kern.timecounter.hardware=ACPI-fast || \ - /sbin/sysctl -n kern.timecounter.hardware=ACPI-safe; } \ - > /dev/null 2>&1 && echo $_t > /var/run/rc.suspend.tch - ;; -esac - # If you have troubles on suspending with PC-CARD modem, try this. # See also contrib/pccardq.c (Only for PAO users). # pccardq | awk -F '~' '$5 == "filled" && $4 ~ /uart/ \ Modified: stable/9/sys/dev/acpica/acpi_timer.c ============================================================================== --- stable/9/sys/dev/acpica/acpi_timer.c Thu Feb 23 22:03:20 2012 (r232082) +++ stable/9/sys/dev/acpica/acpi_timer.c Thu Feb 23 22:10:49 2012 (r232083) @@ -31,6 +31,7 @@ __FBSDID("$FreeBSD$"); #include "opt_acpi.h" #include <sys/param.h> #include <sys/bus.h> +#include <sys/eventhandler.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/sysctl.h> @@ -60,12 +61,15 @@ static device_t acpi_timer_dev; static struct resource *acpi_timer_reg; static bus_space_handle_t acpi_timer_bsh; static bus_space_tag_t acpi_timer_bst; +static eventhandler_tag acpi_timer_eh; static u_int acpi_timer_frequency = 14318182 / 4; static void acpi_timer_identify(driver_t *driver, device_t parent); static int acpi_timer_probe(device_t dev); static int acpi_timer_attach(device_t dev); +static void acpi_timer_resume_handler(struct timecounter *); +static void acpi_timer_suspend_handler(struct timecounter *); static u_int acpi_timer_get_timecount(struct timecounter *tc); static u_int acpi_timer_get_timecount_safe(struct timecounter *tc); static int acpi_timer_sysctl_freq(SYSCTL_HANDLER_ARGS); @@ -244,9 +248,60 @@ acpi_timer_attach(device_t dev) return (ENXIO); acpi_timer_bsh = rman_get_bushandle(acpi_timer_reg); acpi_timer_bst = rman_get_bustag(acpi_timer_reg); + + /* Register suspend event handler. */ + if (EVENTHANDLER_REGISTER(power_suspend, acpi_timer_suspend_handler, + &acpi_timer_timecounter, EVENTHANDLER_PRI_LAST) == NULL) + device_printf(dev, "failed to register suspend event handler\n"); + return (0); } +static void +acpi_timer_resume_handler(struct timecounter *newtc) +{ + struct timecounter *tc; + + tc = timecounter; + if (tc != newtc) { + if (bootverbose) + device_printf(acpi_timer_dev, + "restoring timecounter, %s -> %s\n", + tc->tc_name, newtc->tc_name); + (void)newtc->tc_get_timecount(newtc); + (void)newtc->tc_get_timecount(newtc); + timecounter = newtc; + } +} + +static void +acpi_timer_suspend_handler(struct timecounter *newtc) +{ + struct timecounter *tc; + + /* Deregister existing resume event handler. */ + if (acpi_timer_eh != NULL) { + EVENTHANDLER_DEREGISTER(power_resume, acpi_timer_eh); + acpi_timer_eh = NULL; + } + + KASSERT(newtc == &acpi_timer_timecounter, + ("acpi_timer_suspend_handler: wrong timecounter")); + + tc = timecounter; + if (tc != newtc) { + if (bootverbose) + device_printf(acpi_timer_dev, + "switching timecounter, %s -> %s\n", + tc->tc_name, newtc->tc_name); + (void)acpi_timer_read(); + (void)acpi_timer_read(); + timecounter = newtc; + acpi_timer_eh = EVENTHANDLER_REGISTER(power_resume, + acpi_timer_resume_handler, tc, EVENTHANDLER_PRI_LAST); + } +} + /* * Fetch current time value from reliable hardware. */
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