1/*-
2 * Copyright (c) 2014, 2015 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("$FreeBSD$");
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 char proto_pci_prefix[] = "pci";
63static char **proto_pci_devnames;
64
65static int
66proto_pci_probe(device_t dev)
67{
68	struct sbuf *sb;
69
70	if ((pci_read_config(dev, PCIR_HDRTYPE, 1) & PCIM_HDRTYPE) != 0)
71		return (ENXIO);
72
73	sb = sbuf_new_auto();
74	sbuf_printf(sb, "%s%d:%d:%d:%d", proto_pci_prefix, pci_get_domain(dev),
75	    pci_get_bus(dev), pci_get_slot(dev), pci_get_function(dev));
76	sbuf_finish(sb);
77	device_set_desc_copy(dev, sbuf_data(sb));
78	sbuf_delete(sb);
79	return (proto_probe(dev, proto_pci_prefix, &proto_pci_devnames));
80}
81
82static int
83proto_pci_attach(device_t dev)
84{
85	struct proto_softc *sc;
86	struct resource *res;
87	uint32_t val;
88	int bar, rid, type;
89
90	sc = device_get_softc(dev);
91
92	proto_add_resource(sc, PROTO_RES_PCICFG, 0, NULL);
93	proto_add_resource(sc, PROTO_RES_BUSDMA, 0, NULL);
94
95	for (bar = 0; bar < PCIR_MAX_BAR_0; bar++) {
96		rid = PCIR_BAR(bar);
97		val = pci_read_config(dev, rid, 4);
98		type = (PCI_BAR_IO(val)) ? SYS_RES_IOPORT : SYS_RES_MEMORY;
99		res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
100		if (res == NULL)
101			continue;
102		proto_add_resource(sc, type, rid, res);
103		if (type == SYS_RES_IOPORT)
104			continue;
105		/* Skip over adjacent BAR for 64-bit memory BARs. */
106		if ((val & PCIM_BAR_MEM_TYPE) == PCIM_BAR_MEM_64)
107			bar++;
108	}
109
110	rid = 0;
111	type = SYS_RES_IRQ;
112	res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE | RF_SHAREABLE);
113	if (res != NULL)
114		proto_add_resource(sc, type, rid, res);
115	return (proto_attach(dev));
116}
117
118DRIVER_MODULE(proto, pci, proto_pci_driver, proto_devclass, NULL, NULL);
119