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/param.h>
27#include <sys/systm.h>
28#include <sys/bus.h>
29#include <sys/conf.h>
30#include <sys/kernel.h>
31#include <sys/module.h>
32#include <machine/bus.h>
33#include <sys/rman.h>
34#include <machine/resource.h>
35#include <sys/sbuf.h>
36
37#include <dev/pci/pcireg.h>
38#include <dev/pci/pcivar.h>
39
40#include <dev/proto/proto.h>
41
42static int proto_pci_probe(device_t dev);
43static int proto_pci_attach(device_t dev);
44
45static device_method_t proto_pci_methods[] = {
46	/* Device interface */
47	DEVMETHOD(device_probe,		proto_pci_probe),
48	DEVMETHOD(device_attach,	proto_pci_attach),
49	DEVMETHOD(device_detach,	proto_detach),
50	DEVMETHOD_END
51};
52
53static driver_t proto_pci_driver = {
54	proto_driver_name,
55	proto_pci_methods,
56	sizeof(struct proto_softc),
57};
58
59static char proto_pci_prefix[] = "pci";
60static char **proto_pci_devnames;
61
62static int
63proto_pci_probe(device_t dev)
64{
65	struct sbuf *sb;
66
67	if ((pci_read_config(dev, PCIR_HDRTYPE, 1) & PCIM_HDRTYPE) != 0)
68		return (ENXIO);
69
70	sb = sbuf_new_auto();
71	sbuf_printf(sb, "%s%d:%d:%d:%d", proto_pci_prefix, pci_get_domain(dev),
72	    pci_get_bus(dev), pci_get_slot(dev), pci_get_function(dev));
73	sbuf_finish(sb);
74	device_set_desc_copy(dev, sbuf_data(sb));
75	sbuf_delete(sb);
76	return (proto_probe(dev, proto_pci_prefix, &proto_pci_devnames));
77}
78
79static int
80proto_pci_attach(device_t dev)
81{
82	struct proto_softc *sc;
83	struct resource *res;
84	uint32_t val;
85	int bar, rid, type;
86
87	sc = device_get_softc(dev);
88
89	proto_add_resource(sc, PROTO_RES_PCICFG, 0, NULL);
90	proto_add_resource(sc, PROTO_RES_BUSDMA, 0, NULL);
91
92	for (bar = 0; bar < PCIR_MAX_BAR_0; bar++) {
93		rid = PCIR_BAR(bar);
94		val = pci_read_config(dev, rid, 4);
95		type = (PCI_BAR_IO(val)) ? SYS_RES_IOPORT : SYS_RES_MEMORY;
96		res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE);
97		if (res == NULL)
98			continue;
99		proto_add_resource(sc, type, rid, res);
100		if (type == SYS_RES_IOPORT)
101			continue;
102		/* Skip over adjacent BAR for 64-bit memory BARs. */
103		if ((val & PCIM_BAR_MEM_TYPE) == PCIM_BAR_MEM_64)
104			bar++;
105	}
106
107	rid = 0;
108	type = SYS_RES_IRQ;
109	res = bus_alloc_resource_any(dev, type, &rid, RF_ACTIVE | RF_SHAREABLE);
110	if (res != NULL)
111		proto_add_resource(sc, type, rid, res);
112	return (proto_attach(dev));
113}
114
115DRIVER_MODULE(proto, pci, proto_pci_driver, NULL, NULL);
116