1 /* $OpenBSD: if_an_pci.c,v 1.21 2024/05/24 06:02:53 jsg Exp $ */
2
3 /*
4 * Copyright (c) 1997, 1998, 1999
5 * Bill Paul <wpaul@ctr.columbia.edu>. 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, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Bill Paul.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 * $FreeBSD: src/sys/dev/an/if_an_pci.c,v 1.1 2000/01/14 20:40:56 wpaul Exp $
35 */
36
37 /*
38 * This is a PCI shim for the Aironet PC4500/4800 wireless network
39 * driver. Aironet makes PCMCIA, ISA and PCI versions of these devices,
40 * which all have basically the same interface. The ISA and PCI cards
41 * are actually bridge adapters with PCMCIA cards inserted into them,
42 * however they appear as normal PCI or ISA devices to the host.
43 *
44 * All we do here is handle the PCI match and attach and set up an
45 * interrupt handler entry point. The PCI version of the card uses
46 * a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with
47 * multiple PCI address space mappings. The primary mapping at PCI
48 * register 0x14 is for the PLX chip itself, *NOT* the Aironet card.
49 * The I/O address of the Aironet is actually at register 0x18, which
50 * is the local bus mapping register for bus space 0. There are also
51 * registers for additional register spaces at registers 0x1C and
52 * 0x20, but these are unused in the Aironet devices. To find out
53 * more, you need a datasheet for the 9050 from PLX, but you have
54 * to go through their sales office to get it. Bleh.
55 */
56
57 #include <sys/param.h>
58 #include <sys/systm.h>
59 #include <sys/device.h>
60
61 #include <net/if.h>
62 #include <net/if_media.h>
63
64 #include <netinet/in.h>
65 #include <netinet/if_ether.h>
66
67 #include <net80211/ieee80211_radiotap.h>
68 #include <net80211/ieee80211_var.h>
69
70 #include <machine/bus.h>
71 #include <machine/intr.h>
72
73 #include <dev/pci/pcireg.h>
74 #include <dev/pci/pcivar.h>
75 #include <dev/pci/pcidevs.h>
76
77 #include <dev/ic/anreg.h>
78 #include <dev/ic/anvar.h>
79
80 #define AN_PCI_PLX_LOIO 0x14 /* PLX chip iobase */
81 #define AN_PCI_LOIO 0x18 /* Aironet iobase */
82
83 int an_pci_match(struct device *, void *, void *);
84 void an_pci_attach(struct device *, struct device *, void *);
85
86 const struct cfattach an_pci_ca = {
87 sizeof (struct an_softc), an_pci_match, an_pci_attach
88 };
89
90 const struct pci_matchid an_pci_devices[] = {
91 { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PCI352 },
92 { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PC4500 },
93 { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PC4800 },
94 { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PC4800_1 },
95 };
96
97 int
an_pci_match(struct device * parent,void * match,void * aux)98 an_pci_match(struct device *parent, void *match, void *aux)
99 {
100 return (pci_matchbyid((struct pci_attach_args *)aux, an_pci_devices,
101 nitems(an_pci_devices)));
102 }
103
104 void
an_pci_attach(struct device * parent,struct device * self,void * aux)105 an_pci_attach(struct device *parent, struct device *self, void *aux)
106 {
107 struct an_softc *sc = (struct an_softc *)self;
108 struct pci_attach_args *pa = aux;
109 pci_intr_handle_t ih;
110 bus_space_handle_t ioh;
111 bus_space_tag_t iot = pa->pa_iot;
112 pci_chipset_tag_t pc = pa->pa_pc;
113 const char *intrstr;
114
115 /* Map the I/O ports. */
116 if (pci_mapreg_map(pa, AN_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0,
117 &iot, &ioh, NULL, NULL, 0) != 0) {
118 printf(": can't map i/o space\n");
119 return;
120 }
121 sc->sc_iot = iot;
122 sc->sc_ioh = ioh;
123
124 /* Map and establish the interrupt. */
125 if (pci_intr_map(pa, &ih)) {
126 printf("\n%s: couldn't map interrupt\n", sc->sc_dev.dv_xname);
127 return;
128 }
129 intrstr = pci_intr_string(pc, ih);
130 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, an_intr, sc,
131 sc->sc_dev.dv_xname);
132 if (sc->sc_ih == NULL) {
133 printf("\n%s: couldn't establish interrupt",
134 sc->sc_dev.dv_xname);
135 if (intrstr != NULL)
136 printf(" at %s", intrstr);
137 printf("\n");
138 return;
139 }
140 printf(": %s", intrstr);
141
142 sc->sc_enabled = 1;
143
144 an_attach(sc);
145 }
146