Add support for /etc/rc.suspend and /etc/rc.resume for ACPI. They are

called directly from acpiconf(8).  Change both scripts to take a
subsystem (apm|acpi) and sleep level (suspend,standby|1-5) argument.

etc/apmd.conf

@@ -4,7 +4,7 @@
 #
 
 apm_event SUSPENDREQ {
-	exec "/etc/rc.suspend";
+	exec "/etc/rc.suspend apm suspend";
 }
 
 apm_event USERSUSPENDREQ {
@@ -14,7 +14,7 @@ apm_event USERSUSPENDREQ {
 }
 
 apm_event NORMRESUME, STANDBYRESUME {
-	exec "/etc/rc.resume";
+	exec "/etc/rc.resume apm resume";
 }
 
 # resume event configuration for serial mouse users by

etc/rc.resume

@@ -29,10 +29,18 @@
 
 # sample run command file for APM Resume Event
 
+if [ $# -ne 2 ]; then
+	echo "Usage: $0 [apm|acpi] [resume|1-5]"
+	exit 1
+fi
+
+subsystem=$1
+state=$2
+
 if [ -r /var/run/rc.suspend.pid ]; then
 	kill -9 `cat /var/run/rc.suspend.pid`
 	rm -f /var/run/rc.suspend.pid
-	echo 'rc.suspend is killed'
+	echo 'rc.resume: killed rc.suspend that was still around'
 fi
 
 # Turns on a power supply of a card in the slot inactivated.
@@ -40,7 +48,11 @@ fi
 # pccardq | awk -F '~' '$5 == "inactive" \
 #	{ printf("pccardc power %d 1", $1); }' | sh
 
-logger -t apmd resumed at `date +'%Y%m%d %H:%M:%S'`
+# UHCI has trouble resuming so we just load/unload it.  You
+# should add any other kernel modules you want reloaded here.
+# kldload usb
+
+logger -t $subsystem resumed at `date +'%Y%m%d %H:%M:%S'`
 sync && sync && sync
 
 exit 0

etc/rc.suspend

@@ -29,6 +29,14 @@
 
 # sample run command file for APM Suspend Event
 
+if [ $# -ne 2 ]; then
+	echo "Usage: $0 [apm|acpi] [standby,suspend|1-5]"
+	exit 1
+fi
+
+subsystem=$1
+state=$2
+
 if [ -r /var/run/rc.suspend.pid ]; then
 	exit 1
 fi
@@ -40,11 +48,15 @@ echo $$ > /var/run/rc.suspend.pid
 # pccardq | awk -F '~' '$5 == "filled" && $4 ~ /sio/ \
 #	{ printf("pccardc power %d 0", $1); }' | sh
 
-logger -t apmd suspend at `date +'%Y%m%d %H:%M:%S'`
+# UHCI has trouble resuming so we just load/unload it.  You
+# should add any other kernel modules you want unloaded here.
+# kldunload usb
+
+logger -t $subsystem suspend at `date +'%Y%m%d %H:%M:%S'`
 sync && sync && sync
-sleep 3
+[ $subsystem = "apm" ] && sleep 3
 
 rm -f /var/run/rc.suspend.pid
-zzz
+[ $subsystem = "apm" ] && zzz
 
 exit 0

usr.sbin/acpi/acpiconf/acpiconf.8

@@ -58,7 +58,8 @@ Enters the specified sleep mode.
 Recognized types are
 .Cm 1
 (only the CPU clock is stopped),
-.Cm 2 ,
+.Cm 2 
+(not implemented on most systems but similar to S1),
 .Cm 3
 (the CPU context is lost and memory context is preserved),
 .Cm 4
@@ -69,6 +70,12 @@ and
 Sleep states may also be given as S1, S2, etc.
 The supported states depend on BIOS implementation, including ACPI
 byte code (AML).
+If the
+.Pa /etc/rc.suspend
+and
+.Pa /etc/rc.resume
+scripts are executable, they will be run before and after entering
+the given sleep state.
 .El
 .Sh SEE ALSO
 .Xr acpi 4 ,

usr.sbin/acpi/acpiconf/acpiconf.c

@@ -37,10 +37,11 @@
 #include <unistd.h>
 
 #include <dev/acpica/acpiio.h>
-
 #include <contrib/dev/acpica/acpi.h>
 
-#define ACPIDEV	"/dev/acpi"
+#define ACPIDEV		"/dev/acpi"
+#define RC_SUSPEND_PATH	"/etc/rc.suspend"
+#define RC_RESUME_PATH	"/etc/rc.resume"
 
 static int	acpifd;
 
@@ -68,7 +69,26 @@ acpi_enable_disable(int enable)
 static int
 acpi_sleep(int sleep_type)
 {
-	if (ioctl(acpifd, ACPIIO_SETSLPSTATE, &sleep_type) == -1)
+	char cmd[64];
+	int ret;
+
+	/* Run the suspend rc script, if available. */
+	if (access(RC_SUSPEND_PATH, X_OK) == 0) {
+		snprintf(cmd, sizeof(cmd), "%s acpi %d", RC_SUSPEND_PATH,
+		    sleep_type);
+		system(cmd);
+	}
+
+	ret = ioctl(acpifd, ACPIIO_SETSLPSTATE, &sleep_type);
+
+	/* Run the resume rc script, if available. */
+	if (access(RC_RESUME_PATH, X_OK) == 0) {
+		snprintf(cmd, sizeof(cmd), "%s acpi %d", RC_RESUME_PATH,
+		    sleep_type);
+		system(cmd);
+	}
+
+	if (ret != 0)
 		err(EX_IOERR, "sleep type (%d) failed", sleep_type);
 
 	return (0);