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head/sys/dev/hyperv/vmbus/vmbus_res.c
Property | Old Value | New Value |
---|---|---|
svn:keywords | null | FreeBSD=%H \ No newline at end of property |
/*- | |||||
* Copyright (c) 2017 Microsoft Corp. | |||||
* 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 unmodified, 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 ``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. | |||||
*/ | |||||
#include <sys/cdefs.h> | |||||
__FBSDID("$FreeBSD$"); | |||||
#include <sys/param.h> | |||||
#include <sys/kernel.h> | |||||
#include <sys/bus.h> | |||||
#include <sys/module.h> | |||||
#include <contrib/dev/acpica/include/acpi.h> | |||||
#include <dev/acpica/acpivar.h> | |||||
#include <dev/hyperv/include/hyperv.h> | |||||
#include "acpi_if.h" | |||||
#include "bus_if.h" | |||||
static int vmbus_res_probe(device_t); | |||||
static int vmbus_res_attach(device_t); | |||||
static int vmbus_res_detach(device_t); | |||||
static device_method_t vmbus_res_methods[] = { | |||||
/* Device interface */ | |||||
DEVMETHOD(device_probe, vmbus_res_probe), | |||||
DEVMETHOD(device_attach, vmbus_res_attach), | |||||
DEVMETHOD(device_detach, vmbus_res_detach), | |||||
DEVMETHOD(device_shutdown, bus_generic_shutdown), | |||||
DEVMETHOD(device_suspend, bus_generic_suspend), | |||||
DEVMETHOD(device_resume, bus_generic_resume), | |||||
DEVMETHOD_END | |||||
}; | |||||
static driver_t vmbus_res_driver = { | |||||
"vmbus_res", | |||||
vmbus_res_methods, | |||||
1 | |||||
}; | |||||
static devclass_t vmbus_res_devclass; | |||||
DRIVER_MODULE(vmbus_res, acpi, vmbus_res_driver, vmbus_res_devclass, | |||||
NULL, NULL); | |||||
MODULE_DEPEND(vmbus_res, acpi, 1, 1, 1); | |||||
MODULE_VERSION(vmbus_res, 1); | |||||
static int | |||||
vmbus_res_probe(device_t dev) | |||||
{ | |||||
char *id[] = { "VMBUS", NULL }; | |||||
if (ACPI_ID_PROBE(device_get_parent(dev), dev, id) == NULL || | |||||
device_get_unit(dev) != 0 || vm_guest != VM_GUEST_HV || | |||||
(hyperv_features & CPUID_HV_MSR_SYNIC) == 0) | |||||
return (ENXIO); | |||||
device_set_desc(dev, "Hyper-V Vmbus Resource"); | |||||
return (BUS_PROBE_DEFAULT); | |||||
} | |||||
static int | |||||
vmbus_res_attach(device_t dev __unused) | |||||
{ | |||||
return (0); | |||||
} | |||||
static int | |||||
vmbus_res_detach(device_t dev __unused) | |||||
{ | |||||
return (0); | |||||
} |