1 /*
2 * Copyright (c) 2014 Roger Pau Monné <roger.pau@citrix.com>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
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
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 #include <sys/param.h>
29 #include <sys/systm.h>
30 #include <sys/bus.h>
31 #include <sys/kernel.h>
32 #include <sys/malloc.h>
33 #include <sys/module.h>
34
35 #include <sys/pciio.h>
36 #include <dev/pci/pcireg.h>
37 #include <dev/pci/pcivar.h>
38 #include <dev/pci/pci_private.h>
39
40 #include <xen/xen-os.h>
41 #include <xen/hypervisor.h>
42 #include <xen/xen_pci.h>
43
44 #include "pcib_if.h"
45 #include "pci_if.h"
46
47 static int
xen_pci_probe(device_t dev)48 xen_pci_probe(device_t dev)
49 {
50
51 if (!xen_pv_domain())
52 return (ENXIO);
53
54 device_set_desc(dev, "Xen PCI bus");
55
56 return (BUS_PROBE_DEFAULT);
57 }
58
59 static device_method_t xen_pci_methods[] = {
60 /* Device interface */
61 DEVMETHOD(device_probe, xen_pci_probe),
62
63 /* PCI interface overwrites */
64 DEVMETHOD(pci_enable_msi, xen_pci_enable_msi_method),
65 DEVMETHOD(pci_disable_msi, xen_pci_disable_msi_method),
66 DEVMETHOD(pci_child_added, xen_pci_child_added_method),
67
68 DEVMETHOD_END
69 };
70
71 static devclass_t pci_devclass;
72
73 DEFINE_CLASS_1(pci, xen_pci_driver, xen_pci_methods, sizeof(struct pci_softc),
74 pci_driver);
75 DRIVER_MODULE(xen_pci, pcib, xen_pci_driver, pci_devclass, 0, 0);
76 MODULE_DEPEND(xen_pci, pci, 1, 1, 1);
77 MODULE_VERSION(xen_pci, 1);
78