1/* $NetBSD: if_an_pci.c,v 1.35 2014/03/29 19:28:24 christos Exp $ */
2
3/*
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Atsushi Onoe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/*
33 * PCI bus front-end for the Aironet PC4500/PC4800 Wireless LAN Adapter.
34 * Unlike WaveLAN, this adapter attached as PCI device using a PLX 9050
35 * PCI to "dumb bus" bridge chip.
36 */
37
38#include <sys/cdefs.h>
39__KERNEL_RCSID(0, "$NetBSD: if_an_pci.c,v 1.35 2014/03/29 19:28:24 christos Exp $");
40
41#include <sys/param.h>
42#include <sys/systm.h>
43#include <sys/mbuf.h>
44#include <sys/malloc.h>
45#include <sys/kernel.h>
46#include <sys/socket.h>
47#include <sys/ioctl.h>
48#include <sys/errno.h>
49#include <sys/device.h>
50#include <sys/callout.h>
51
52#include <machine/endian.h>
53
54#include <net/if.h>
55#include <net/if_dl.h>
56#include <net/if_media.h>
57#include <net/if_ether.h>
58
59#include <net80211/ieee80211_netbsd.h>
60#include <net80211/ieee80211_var.h>
61
62#include <sys/bus.h>
63#include <sys/intr.h>
64
65#include <dev/ic/anreg.h>
66#include <dev/ic/anvar.h>
67
68#include <dev/pci/pcivar.h>
69#include <dev/pci/pcireg.h>
70#include <dev/pci/pcidevs.h>
71
72#define AN_PCI_PLX_IOBA 0x14 /* i/o base for PLX chip */
73#define AN_PCI_IOBA PCI_BAR(2) /* i/o base */
74
75struct an_pci_softc {
76 struct an_softc sc_an; /* real "an" softc */
77 pci_chipset_tag_t sc_pct;
78 pcitag_t sc_pcitag;
79
80 /* PCI-specific goo. */
81 void *sc_ih; /* interrupt handle */
82};
83
84static int an_pci_match(device_t, cfdata_t, void *);
85static void an_pci_attach(device_t, device_t, void *);
86
87CFATTACH_DECL_NEW(an_pci, sizeof(struct an_pci_softc),
88 an_pci_match, an_pci_attach, NULL, NULL);
89
90static const struct an_pci_product {
91 u_int32_t app_vendor; /* PCI vendor ID */
92 u_int32_t app_product; /* PCI product ID */
93} an_pci_products[] = {
94 { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PC4xxx },
95 { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PC4500 },
96 { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PC4800 },
97 { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_PCI350 },
98 { PCI_VENDOR_AIRONET, PCI_PRODUCT_AIRONET_MPI350 },
99 { 0, 0 }
100};
101
102static int
103an_pci_match(device_t parent, cfdata_t match, void *aux)
104{
105 struct pci_attach_args *pa = aux;
106 const struct an_pci_product *app;
107
108 for (app = an_pci_products; app->app_vendor != 0; app++) {
109 if (PCI_VENDOR(pa->pa_id) == app->app_vendor &&
110 PCI_PRODUCT(pa->pa_id) == app->app_product)
111 return 1;
112 }
113 return 0;
114}
115
116static void
117an_pci_attach(device_t parent, device_t self, void *aux)
118{
119 struct pci_attach_args *pa = (struct pci_attach_args *)aux;
120 struct an_pci_softc *psc = device_private(self);
121 struct an_softc *sc = &psc->sc_an;
122 char const *intrstr;
123 pci_intr_handle_t ih;
124 bus_size_t iosize;
125 u_int32_t csr;
126 char intrbuf[PCI_INTRSTR_LEN];
127
128 sc->sc_dev = self;
129 psc->sc_pct = pa->pa_pc;
130 psc->sc_pcitag = pa->pa_tag;
131
132 pci_aprint_devinfo(pa, "802.11 controller");
133
134 /* Map I/O registers */
135 if (pci_mapreg_map(pa, AN_PCI_IOBA, PCI_MAPREG_TYPE_IO, 0,
136 &sc->sc_iot, &sc->sc_ioh, NULL, &iosize) != 0) {
137 aprint_error_dev(self, "unable to map registers\n");
138 return;
139 }
140
141 /* Enable the device. */
142 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
143 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
144 csr | PCI_COMMAND_MASTER_ENABLE);
145
146 /* Map and establish the interrupt. */
147 if (pci_intr_map(pa, &ih)) {
148 aprint_error_dev(self, "unable to map interrupt\n");
149 return;
150 }
151 intrstr = pci_intr_string(pa->pa_pc, ih, intrbuf, sizeof(intrbuf));
152 psc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET, an_intr, sc);
153 if (psc->sc_ih == NULL) {
154 aprint_error_dev(self, "unable to establish interrupt");
155 if (intrstr != NULL)
156 aprint_error(" at %s", intrstr);
157 aprint_error("\n");
158 return;
159 }
160 aprint_normal_dev(self, "interrupting at %s\n", intrstr);
161 sc->sc_enabled = 1;
162
163 if (an_attach(sc) != 0) {
164 aprint_error_dev(self, "failed to attach controller\n");
165 pci_intr_disestablish(pa->pa_pc, psc->sc_ih);
166 bus_space_unmap(sc->sc_iot, sc->sc_ioh, iosize);
167 }
168
169 if (pmf_device_register(self, NULL, NULL))
170 pmf_class_network_register(self, &sc->sc_if);
171 else
172 aprint_error_dev(self, "couldn't establish power handler\n");
173}
174