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
52 static int mtd_pci_match(struct device *, void *, void *);
53 static void mtd_pci_attach(struct device *, struct device *, void *);
54
55
56 const struct cfattach mtd_pci_ca = {
57 sizeof(struct mtd_softc), mtd_pci_match, mtd_pci_attach
58 };
59
60 static 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
67 static int
mtd_pci_match(struct device * parent,void * match,void * aux)68 mtd_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
75 static void
mtd_pci_attach(struct device * parent,struct device * self,void * aux)76 mtd_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