2 * Copyright (c) 2014 Roger Pau Monné <roger.pau@citrix.com>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/module.h>
38 #include <xen/xen-os.h>
39 #include <xen/gnttab.h>
41 static devclass_t xenpv_devclass;
44 xenpv_identify(driver_t *driver, device_t parent)
49 /* Make sure there's only one xenpv device. */
50 if (devclass_get_device(xenpv_devclass, 0))
53 if (BUS_ADD_CHILD(parent, 0, "xenpv", 0) == NULL)
54 panic("Unable to attach xenpv bus.");
58 xenpv_probe(device_t dev)
61 device_set_desc(dev, "Xen PV bus");
62 return (BUS_PROBE_NOWILDCARD);
66 xenpv_attach(device_t dev)
71 * Let our child drivers identify any child devices that they
72 * can find. Once that is done attach any devices that we
75 bus_generic_probe(dev);
76 bus_generic_attach(dev);
78 if (!devclass_get_device(devclass_find("isa"), 0)) {
79 child = BUS_ADD_CHILD(dev, 0, "isa", 0);
81 panic("Failed to attach ISA bus.");
82 device_probe_and_attach(child);
88 static device_method_t xenpv_methods[] = {
89 /* Device interface */
90 DEVMETHOD(device_identify, xenpv_identify),
91 DEVMETHOD(device_probe, xenpv_probe),
92 DEVMETHOD(device_attach, xenpv_attach),
93 DEVMETHOD(device_suspend, bus_generic_suspend),
94 DEVMETHOD(device_resume, bus_generic_resume),
97 DEVMETHOD(bus_add_child, bus_generic_add_child),
98 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
99 DEVMETHOD(bus_release_resource, bus_generic_release_resource),
100 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
101 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
106 static driver_t xenpv_driver = {
112 DRIVER_MODULE(xenpv, nexus, xenpv_driver, xenpv_devclass, 0, 0);