1/*	$OpenBSD: if_mtd_pci.c,v 1.14 2024/05/24 06:02:56 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
35#include <net/if.h>
36#include <net/if_media.h>
37
38#include <netinet/in.h>
39#include <netinet/if_ether.h>
40
41#include <machine/bus.h>
42
43#include <dev/mii/miivar.h>
44
45#include <dev/pci/pcidevs.h>
46#include <dev/pci/pcireg.h>
47#include <dev/pci/pcivar.h>
48
49#include <dev/ic/mtd8xxreg.h>
50#include <dev/ic/mtd8xxvar.h>
51
52static int mtd_pci_match(struct device *, void *, void *);
53static void mtd_pci_attach(struct device *, struct device *, void *);
54
55
56const struct cfattach mtd_pci_ca = {
57	sizeof(struct mtd_softc), mtd_pci_match, mtd_pci_attach
58};
59
60static const struct pci_matchid mtd_pci_devices[] = {
61	{ PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD800 },
62	{ PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD803 },
63	{ PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD891 },
64};
65
66
67static int
68mtd_pci_match(struct device *parent, void *match, void *aux)
69{
70	return (pci_matchbyid((struct pci_attach_args *)aux, mtd_pci_devices,
71	    sizeof(mtd_pci_devices) / sizeof(mtd_pci_devices[0])));
72}
73
74
75static void
76mtd_pci_attach(struct device *parent, struct device *self, void *aux)
77{
78	struct mtd_softc *sc = (void *)self;
79	struct pci_attach_args *pa = aux;
80	pci_intr_handle_t ih;
81	const char *intrstr = NULL;
82	u_int32_t command;
83	bus_size_t iosize;
84
85	sc->sc_devid = PCI_PRODUCT(pa->pa_id);
86	command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
87	if (sc->sc_devid == PCI_PRODUCT_MYSON_MTD800 &&
88	    pci_conf_read(pa->pa_pc, pa->pa_tag, MTD_PCI_LOIO) & 0x300) {
89		pa->pa_flags &= ~PCI_FLAGS_IO_ENABLED;
90		command &= ~PCI_COMMAND_IO_ENABLE;
91	}
92	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, command);
93
94	command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
95	if (command & PCI_COMMAND_MEM_ENABLE) {
96		if (pci_mapreg_map(pa, MTD_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0,
97		    &sc->sc_bust, &sc->sc_bush, NULL, &iosize, 0)) {
98			printf(": can't map mem space\n");
99			return;
100		}
101	} else {
102		if (pci_mapreg_map(pa, MTD_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
103		    &sc->sc_bust, &sc->sc_bush, NULL, &iosize, 0)) {
104			printf(": can't map io space\n");
105			return;
106		}
107	}
108
109	/*
110	 * Allocate our interrupt.
111	 */
112	if (pci_intr_map(pa, &ih)) {
113		printf(": couldn't map interrupt\n");
114		bus_space_unmap(sc->sc_bust, sc->sc_bush, iosize);
115		return;
116	}
117
118	intrstr = pci_intr_string(pa->pa_pc, ih);
119	if (pci_intr_establish(pa->pa_pc, ih, IPL_NET, mtd_intr, sc,
120	    self->dv_xname) == NULL) {
121		printf(": couldn't establish interrupt");
122		if (intrstr != NULL)
123			printf(" at %s", intrstr);
124		printf("\n");
125		bus_space_unmap(sc->sc_bust, sc->sc_bush, iosize);
126		return;
127	}
128	printf(": %s", intrstr);
129
130	sc->sc_dmat = pa->pa_dmat;
131	mtd_attach(sc);
132}
133