if_mtd_pci.c revision 1.13 
1/*	$OpenBSD: if_mtd_pci.c,v 1.13 2022/08/29 06:08:04 jsg Exp $	*/
2
3/*
4 * Copyright (c) 2003 Oleg Safiullin <form@pdp11.org.ru>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice unmodified, this list of conditions, and the following
12 *    disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 */
30
31#include <sys/param.h>
32#include <sys/device.h>
33#include <sys/systm.h>
34#include <sys/socket.h>
35
36#include <net/if.h>
37#include <net/if_media.h>
38
39#include <netinet/in.h>
40#include <netinet/if_ether.h>
41
42#include <machine/bus.h>
43
44#include <dev/mii/miivar.h>
45
46#include <dev/pci/pcidevs.h>
47#include <dev/pci/pcireg.h>
48#include <dev/pci/pcivar.h>
49
50#include <dev/ic/mtd8xxreg.h>
51#include <dev/ic/mtd8xxvar.h>
52
53static int mtd_pci_match(struct device *, void *, void *);
54static void mtd_pci_attach(struct device *, struct device *, void *);
55
56
57const struct cfattach mtd_pci_ca = {
58	sizeof(struct mtd_softc), mtd_pci_match, mtd_pci_attach
59};
60
61static const struct pci_matchid mtd_pci_devices[] = {
62	{ PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD800 },
63	{ PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD803 },
64	{ PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD891 },
65};
66
67
68static int
69mtd_pci_match(struct device *parent, void *match, void *aux)
70{
71	return (pci_matchbyid((struct pci_attach_args *)aux, mtd_pci_devices,
72	    sizeof(mtd_pci_devices) / sizeof(mtd_pci_devices[0])));
73}
74
75
76static void
77mtd_pci_attach(struct device *parent, struct device *self, void *aux)
78{
79	struct mtd_softc *sc = (void *)self;
80	struct pci_attach_args *pa = aux;
81	pci_intr_handle_t ih;
82	const char *intrstr = NULL;
83	u_int32_t command;
84	bus_size_t iosize;
85
86	sc->sc_devid = PCI_PRODUCT(pa->pa_id);
87	command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
88	if (sc->sc_devid == PCI_PRODUCT_MYSON_MTD800 &&
89	    pci_conf_read(pa->pa_pc, pa->pa_tag, MTD_PCI_LOIO) & 0x300) {
90		pa->pa_flags &= ~PCI_FLAGS_IO_ENABLED;
91		command &= ~PCI_COMMAND_IO_ENABLE;
92	}
93	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, command);
94
95	command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
96	if (command & PCI_COMMAND_MEM_ENABLE) {
97		if (pci_mapreg_map(pa, MTD_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0,
98		    &sc->sc_bust, &sc->sc_bush, NULL, &iosize, 0)) {
99			printf(": can't map mem space\n");
100			return;
101		}
102	} else {
103		if (pci_mapreg_map(pa, MTD_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
104		    &sc->sc_bust, &sc->sc_bush, NULL, &iosize, 0)) {
105			printf(": can't map io space\n");
106			return;
107		}
108	}
109
110	/*
111	 * Allocate our interrupt.
112	 */
113	if (pci_intr_map(pa, &ih)) {
114		printf(": couldn't map interrupt\n");
115		bus_space_unmap(sc->sc_bust, sc->sc_bush, iosize);
116		return;
117	}
118
119	intrstr = pci_intr_string(pa->pa_pc, ih);
120	if (pci_intr_establish(pa->pa_pc, ih, IPL_NET, mtd_intr, sc,
121	    self->dv_xname) == NULL) {
122		printf(": couldn't establish interrupt");
123		if (intrstr != NULL)
124			printf(" at %s", intrstr);
125		printf("\n");
126		bus_space_unmap(sc->sc_bust, sc->sc_bush, iosize);
127		return;
128	}
129	printf(": %s", intrstr);
130
131	sc->sc_dmat = pa->pa_dmat;
132	mtd_attach(sc);
133}
134