bhnd_pcib.c revision 296077 
1/*-
2 * Copyright (c) 2015 Landon Fuller <landon@landonf.org>
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 *    without modification.
11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
13 *    redistribution must be conditioned upon including a substantially
14 *    similar Disclaimer requirement for further binary redistribution.
15 *
16 * NO WARRANTY
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27 * THE POSSIBILITY OF SUCH DAMAGES.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: head/sys/dev/bhnd/cores/pci/bhnd_pcib.c 296077 2016-02-26 03:34:08Z adrian $");
32
33/*
34 * Broadcom PCI-BHND Host Bridge.
35 *
36 * This driver is used to "eat" PCI(e) cores operating in endpoint mode when
37 * they're attached to a bhndb_pci driver on the host side.
38 */
39
40#include <sys/param.h>
41#include <sys/kernel.h>
42#include <sys/bus.h>
43#include <sys/module.h>
44
45#include <machine/bus.h>
46#include <sys/rman.h>
47#include <machine/resource.h>
48
49#include <dev/bhnd/bhnd.h>
50
51#include "bhnd_pcireg.h"
52
53#include "bhnd_pcibvar.h"
54
55static const struct bhnd_pcib_device {
56	uint16_t	 vendor;
57	uint16_t	 device;
58	const char	*desc;
59} bhnd_pcib_devs[] = {
60	{ BHND_MFGID_BCM,	BHND_COREID_PCI,	"BHND Host-PCI bridge" },
61	{ BHND_MFGID_BCM,	BHND_COREID_PCIE,	"BHND Host-PCI bridge (PCIe Gen1)" },
62	{ BHND_MFGID_INVALID,	BHND_COREID_INVALID,	NULL }
63};
64
65static int
66bhnd_pcib_probe(device_t dev)
67{
68	const struct bhnd_pcib_device *id;
69
70	/* Ignore PCI cores configured in host bridge mode */
71	if (bhnd_is_hostb_device(dev))
72		return (ENXIO);
73
74	for (id = bhnd_pcib_devs; id->device != BHND_COREID_INVALID; id++) {
75		if (bhnd_get_vendor(dev) != id->vendor)
76			continue;
77
78		if (bhnd_get_device(dev) != id->device)
79			continue;
80
81		device_set_desc(dev, id->desc);
82		return (BUS_PROBE_SPECIFIC);
83	}
84
85	return (ENXIO);
86}
87
88static int
89bhnd_pcib_attach(device_t dev)
90{
91	return (ENXIO);
92}
93
94static int
95bhnd_pcib_detach(device_t dev)
96{
97	return (ENXIO);
98}
99
100static int
101bhnd_pcib_suspend(device_t dev)
102{
103	return (ENXIO);
104}
105
106static int
107bhnd_pcib_resume(device_t dev)
108{
109	return (ENXIO);
110}
111
112static device_method_t bhnd_pcib_methods[] = {
113	/* Device interface */
114	DEVMETHOD(device_probe,		bhnd_pcib_probe),
115	DEVMETHOD(device_attach,	bhnd_pcib_attach),
116	DEVMETHOD(device_detach,	bhnd_pcib_detach),
117	DEVMETHOD(device_suspend,	bhnd_pcib_suspend),
118	DEVMETHOD(device_resume,	bhnd_pcib_resume),
119	DEVMETHOD_END
120};
121
122DEFINE_CLASS_0(bhnd_pcib, bhnd_pcib_driver, bhnd_pcib_methods, sizeof(struct bhnd_pcib_softc));
123DRIVER_MODULE(bhnd_pcib, bhnd, bhnd_pcib_driver, bhnd_hostb_devclass, 0, 0);
124
125MODULE_VERSION(bhnd_pcib, 1);
126MODULE_DEPEND(bhnd_pcib, pci, 1, 1, 1);
127MODULE_DEPEND(bhnd_pcib, bhnd_pci_mdio, 1, 1, 1);
128