diff options
Diffstat (limited to 'sys/dev/xen/control/control.c')
| -rw-r--r-- | sys/dev/xen/control/control.c | 60 |
1 files changed, 26 insertions, 34 deletions
diff --git a/sys/dev/xen/control/control.c b/sys/dev/xen/control/control.c index 1dc1df935b84..123df4992894 100644 --- a/sys/dev/xen/control/control.c +++ b/sys/dev/xen/control/control.c @@ -1,5 +1,5 @@ /*- - * SPDX-License-Identifier: BSD-2-Clause AND BSD-4-Clause + * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2010 Justin T. Gibbs, Spectra Logic Corporation * All rights reserved. @@ -31,39 +31,6 @@ */ /*- - * PV suspend/resume support: - * - * Copyright (c) 2004 Christian Limpach. - * Copyright (c) 2004-2006,2008 Kip Macy - * 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. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Christian Limpach. - * 4. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. - */ - -/*- * HVM suspend/resume support: * * Copyright (c) 2008 Citrix Systems, Inc. @@ -394,6 +361,20 @@ xctrl_on_watch_event(struct xs_watch *watch, const char **vec, unsigned int len) } /*------------------ Private Device Attachment Functions --------------------*/ + +static void +notify_support(void) +{ + /* + * Notify kernel is ready to handle "control/shutdown" events. Ignore + * errors if the nodes haven't been created by the toolstack, as the + * parent "control" directory should be read-only for the guest. + */ + xs_write(XST_NIL, "control", "feature-poweroff", "1"); + xs_write(XST_NIL, "control", "feature-reboot", "1"); + xs_write(XST_NIL, "control", "feature-suspend", "1"); +} + /** * \brief Identify instances of this device type in the system. * @@ -455,6 +436,8 @@ xctrl_attach(device_t dev) EVENTHANDLER_REGISTER(shutdown_final, xctrl_shutdown_final, NULL, SHUTDOWN_PRI_LAST); + notify_support(); + return (0); } @@ -479,6 +462,14 @@ xctrl_detach(device_t dev) return (0); } +static int +xctrl_resume(device_t dev) +{ + notify_support(); + + return (0); +} + /*-------------------- Private Device Attachment Data -----------------------*/ static device_method_t xctrl_methods[] = { /* Device interface */ @@ -486,6 +477,7 @@ static device_method_t xctrl_methods[] = { DEVMETHOD(device_probe, xctrl_probe), DEVMETHOD(device_attach, xctrl_attach), DEVMETHOD(device_detach, xctrl_detach), + DEVMETHOD(device_resume, xctrl_resume), DEVMETHOD_END }; |