proto_bus_pci.c revision 265055 
1/*-
2 * Copyright (c) 2014 Marcel Moolenaar
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 ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include <sys/cdefs.h>
27__FBSDID("$FreeBSD: head/sys/dev/proto/proto_bus_pci.c 265055 2014-04-28 17:58:40Z marcel $");
28
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/bus.h>
32#include <sys/conf.h>
33#include <sys/kernel.h>
34#include <sys/module.h>
35#include <machine/bus.h>
36#include <sys/rman.h>
37#include <machine/resource.h>
38#include <sys/sbuf.h>
39
40#include <dev/pci/pcireg.h>
41#include <dev/pci/pcivar.h>
42
43#include <dev/proto/proto.h>
44
45static int proto_pci_probe(device_t dev);
46static int proto_pci_attach(device_t dev);
47
48static device_method_t proto_pci_methods[] = {
49	/* Device interface */
50	DEVMETHOD(device_probe,		proto_pci_probe),
51	DEVMETHOD(device_attach,	proto_pci_attach),
52	DEVMETHOD(device_detach,	proto_detach),
53	DEVMETHOD_END
54};
55
56static driver_t proto_pci_driver = {
57	proto_driver_name,
58	proto_pci_methods,
59	sizeof(struct proto_softc),
60};
61
62static int
63proto_pci_probe(device_t dev)
64{
65	struct sbuf *sb;
66
67	/* For now we only attach to function 0 devices. */
68	if (pci_get_function(dev) != 0)
69		return (ENXIO);
70
71	sb = sbuf_new_auto();
72	sbuf_printf(sb, "pci%d:%d:%d:%d", pci_get_domain(dev),
73	    pci_get_bus(dev), pci_get_slot(dev), pci_get_function(dev));
74	sbuf_finish(sb);
75	device_set_desc_copy(dev, sbuf_data(sb));
76	sbuf_delete(sb);
77	return (BUS_PROBE_HOOVER);
78}
79
80static int
81proto_pci_attach(device_t dev)
82{
83	struct proto_softc *sc;
84	struct resource *res;
85	int bar, rid, type;
86
87	sc = device_get_softc(dev);
88
89	proto_add_resource(sc, PROTO_RES_PCICFG, 0, NULL);
90
91	for (bar = 0; bar < PCIR_MAX_BAR_0; bar++) {
92		rid = PCIR_BAR(bar);
93		type = SYS_RES_MEMORY;
94		res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
95		if (res == NULL) {
96			type = SYS_RES_IOPORT;
97			res = bus_alloc_resource_any(dev, type, &rid,
98			    RF_ACTIVE);
99		}
100		if (res != NULL)
101			proto_add_resource(sc, type, rid, res);
102	}
103
104	rid = 0;
105	type = SYS_RES_IRQ;
106	res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE | RF_SHAREABLE);
107	if (res != NULL)
108		proto_add_resource(sc, type, rid, res);
109	return (proto_attach(dev));
110}
111
112DRIVER_MODULE(proto, pci, proto_pci_driver, proto_devclass, NULL, NULL);
113