1 /*-
2 * Copyright (c) 2002-2007 Sam Leffler, Errno Consulting
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer,
10 * without modification.
11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
13 * redistribution must be conditioned upon including a substantially
14 * similar Disclaimer requirement for further binary redistribution.
15 *
16 * NO WARRANTY
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27 * THE POSSIBILITY OF SUCH DAMAGES.
28 */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD: releng/8.1/sys/dev/bwi/if_bwi_pci.c 192277 2009-05-18 01:00:11Z imp $");
32
33 /*
34 * PCI/Cardbus front-end for the Broadcom Wireless LAN controller driver.
35 */
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/module.h>
40 #include <sys/kernel.h>
41 #include <sys/lock.h>
42 #include <sys/mutex.h>
43 #include <sys/errno.h>
44
45 #include <machine/bus.h>
46 #include <machine/resource.h>
47 #include <sys/bus.h>
48 #include <sys/rman.h>
49
50 #include <sys/socket.h>
51
52 #include <net/if.h>
53 #include <net/if_media.h>
54 #include <net/if_arp.h>
55
56 #include <net80211/ieee80211_var.h>
57 #include <net80211/ieee80211_radiotap.h>
58 #include <net80211/ieee80211_amrr.h>
59
60 #include <dev/pci/pcivar.h>
61 #include <dev/pci/pcireg.h>
62
63 #include <dev/bwi/if_bwivar.h>
64 #include <dev/bwi/if_bwireg.h>
65 #include <dev/bwi/bitops.h>
66
67 /*
68 * PCI glue.
69 */
70
71 struct bwi_pci_softc {
72 struct bwi_softc sc_sc;
73 };
74
75 #define BS_BAR 0x10
76 #define PCIR_RETRY_TIMEOUT 0x41
77
78 static const struct bwi_dev {
79 uint16_t vid;
80 uint16_t did;
81 const char *desc;
82 } bwi_devices[] = {
83 { PCI_VENDOR_BROADCOM, 0x4301,"Broadcom BCM4301 802.11b Wireless Lan" },
84 { PCI_VENDOR_BROADCOM, 0x4307,"Broadcom BCM4307 802.11b Wireless Lan" },
85 { PCI_VENDOR_BROADCOM, 0x4311,"Broadcom BCM4311 802.11b/g Wireless Lan" },
86 { PCI_VENDOR_BROADCOM, 0x4312,"Broadcom BCM4312 802.11a/b/g Wireless Lan" },
87 { PCI_VENDOR_BROADCOM, 0x4313,"Broadcom BCM4312 802.11a Wireless Lan" },
88 { PCI_VENDOR_BROADCOM, 0x4320,"Broadcom BCM4306 802.11b/g Wireless Lan"},
89 { PCI_VENDOR_BROADCOM, 0x4321,"Broadcom BCM4306 802.11a Wireless Lan"},
90 { PCI_VENDOR_BROADCOM, 0x4325,"Broadcom BCM4306 802.11b/g Wireless Lan"},
91 { PCI_VENDOR_BROADCOM, 0x4324,"Broadcom BCM4309 802.11a/b/g Wireless Lan" },
92 { PCI_VENDOR_BROADCOM, 0x4318,"Broadcom BCM4318 802.11b/g Wireless Lan" },
93 { PCI_VENDOR_BROADCOM, 0x4319,"Broadcom BCM4318 802.11a/b/g Wireless Lan" },
94 { PCI_VENDOR_BROADCOM, 0x431a,"Broadcom BCM4318 802.11a Wireless Lan" }
95 };
96
97 static int
98 bwi_pci_probe(device_t dev)
99 {
100 const struct bwi_dev *b;
101 uint16_t did, vid;
102
103 did = pci_get_device(dev);
104 vid = pci_get_vendor(dev);
105
106 for (b = bwi_devices; b->desc != NULL; ++b) {
107 if (b->did == did && b->vid == vid) {
108 device_set_desc(dev, b->desc);
109 return BUS_PROBE_DEFAULT;
110 }
111 }
112 return ENXIO;
113 }
114
115 static int
116 bwi_pci_attach(device_t dev)
117 {
118 struct bwi_pci_softc *psc = device_get_softc(dev);
119 struct bwi_softc *sc = &psc->sc_sc;
120 int error = ENXIO;
121
122 sc->sc_dev = dev;
123
124 /*
125 * Enable bus mastering.
126 */
127 pci_enable_busmaster(dev);
128
129 /*
130 * Setup memory-mapping of PCI registers.
131 */
132 sc->sc_mem_rid = BWI_PCIR_BAR;
133 sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
134 &sc->sc_mem_rid, RF_ACTIVE);
135 if (sc->sc_mem_res == NULL) {
136 device_printf(dev, "cannot map register space\n");
137 goto bad;
138 }
139 sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res);
140 sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res);
141 /*
142 * Mark device invalid so any interrupts (shared or otherwise)
143 * that arrive before the card is setup are discarded.
144 */
145 sc->sc_invalid = 1;
146
147 /*
148 * Arrange interrupt line.
149 */
150 sc->sc_irq_rid = 0;
151 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
152 &sc->sc_irq_rid,
153 RF_SHAREABLE|RF_ACTIVE);
154 if (sc->sc_irq_res == NULL) {
155 device_printf(dev, "could not map interrupt\n");
156 goto bad1;
157 }
158 if (bus_setup_intr(dev, sc->sc_irq_res,
159 INTR_TYPE_NET | INTR_MPSAFE,
160 NULL, bwi_intr, sc, &sc->sc_irq_handle)) {
161 device_printf(dev, "could not establish interrupt\n");
162 goto bad2;
163 }
164
165 /* Get more PCI information */
166 sc->sc_pci_did = pci_get_device(dev);
167 sc->sc_pci_revid = pci_get_revid(dev);
168 sc->sc_pci_subvid = pci_get_subvendor(dev);
169 sc->sc_pci_subdid = pci_get_subdevice(dev);
170
171 error = bwi_attach(sc);
172 if (error == 0) /* success */
173 return 0;
174
175 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
176 bad2:
177 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
178 bad1:
179 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res);
180 bad:
181 return (error);
182 }
183
184 static int
185 bwi_pci_detach(device_t dev)
186 {
187 struct bwi_pci_softc *psc = device_get_softc(dev);
188 struct bwi_softc *sc = &psc->sc_sc;
189
190 /* check if device was removed */
191 sc->sc_invalid = !bus_child_present(dev);
192
193 bwi_detach(sc);
194
195 bus_generic_detach(dev);
196 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
197 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
198
199 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res);
200
201 return (0);
202 }
203
204 static int
205 bwi_pci_shutdown(device_t dev)
206 {
207 struct bwi_pci_softc *psc = device_get_softc(dev);
208
209 bwi_shutdown(&psc->sc_sc);
210 return (0);
211 }
212
213 static int
214 bwi_pci_suspend(device_t dev)
215 {
216 struct bwi_pci_softc *psc = device_get_softc(dev);
217
218 bwi_suspend(&psc->sc_sc);
219
220 return (0);
221 }
222
223 static int
224 bwi_pci_resume(device_t dev)
225 {
226 struct bwi_pci_softc *psc = device_get_softc(dev);
227
228 bwi_resume(&psc->sc_sc);
229
230 return (0);
231 }
232
233 static device_method_t bwi_pci_methods[] = {
234 /* Device interface */
235 DEVMETHOD(device_probe, bwi_pci_probe),
236 DEVMETHOD(device_attach, bwi_pci_attach),
237 DEVMETHOD(device_detach, bwi_pci_detach),
238 DEVMETHOD(device_shutdown, bwi_pci_shutdown),
239 DEVMETHOD(device_suspend, bwi_pci_suspend),
240 DEVMETHOD(device_resume, bwi_pci_resume),
241
242 { 0,0 }
243 };
244 static driver_t bwi_driver = {
245 "bwi",
246 bwi_pci_methods,
247 sizeof (struct bwi_pci_softc)
248 };
249 static devclass_t bwi_devclass;
250 DRIVER_MODULE(bwi, pci, bwi_driver, bwi_devclass, 0, 0);
251 MODULE_DEPEND(bwi, wlan, 1, 1, 1); /* 802.11 media layer */
252 MODULE_DEPEND(bwi, firmware, 1, 1, 1); /* firmware support */
253 MODULE_DEPEND(bwi, wlan_amrr, 1, 1, 1);
Cache object: 48cad3692f1681e54223933cf8f351bc
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