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/10.3/sys/dev/bwi/if_bwi_pci.c 235338 2012-05-12 15:11:53Z adrian $");
32
33 /*
34 * PCI/Cardbus front-end for the Broadcom Wireless LAN controller driver.
35 */
36
37 #include "opt_wlan.h"
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/module.h>
42 #include <sys/kernel.h>
43 #include <sys/lock.h>
44 #include <sys/mutex.h>
45 #include <sys/errno.h>
46
47 #include <machine/bus.h>
48 #include <machine/resource.h>
49 #include <sys/bus.h>
50 #include <sys/rman.h>
51
52 #include <sys/socket.h>
53
54 #include <net/if.h>
55 #include <net/if_media.h>
56 #include <net/if_arp.h>
57
58 #include <net80211/ieee80211_var.h>
59 #include <net80211/ieee80211_radiotap.h>
60 #include <net80211/ieee80211_amrr.h>
61
62 #include <dev/pci/pcivar.h>
63 #include <dev/pci/pcireg.h>
64
65 #include <dev/bwi/if_bwivar.h>
66 #include <dev/bwi/if_bwireg.h>
67 #include <dev/bwi/bitops.h>
68
69 /*
70 * PCI glue.
71 */
72
73 struct bwi_pci_softc {
74 struct bwi_softc sc_sc;
75 };
76
77 #define BS_BAR 0x10
78 #define PCIR_RETRY_TIMEOUT 0x41
79
80 static const struct bwi_dev {
81 uint16_t vid;
82 uint16_t did;
83 const char *desc;
84 } bwi_devices[] = {
85 { PCI_VENDOR_BROADCOM, 0x4301,"Broadcom BCM4301 802.11b Wireless Lan" },
86 { PCI_VENDOR_BROADCOM, 0x4307,"Broadcom BCM4307 802.11b Wireless Lan" },
87 { PCI_VENDOR_BROADCOM, 0x4311,"Broadcom BCM4311 802.11b/g Wireless Lan" },
88 { PCI_VENDOR_BROADCOM, 0x4312,"Broadcom BCM4312 802.11a/b/g Wireless Lan" },
89 { PCI_VENDOR_BROADCOM, 0x4313,"Broadcom BCM4312 802.11a Wireless Lan" },
90 { PCI_VENDOR_BROADCOM, 0x4320,"Broadcom BCM4306 802.11b/g Wireless Lan"},
91 { PCI_VENDOR_BROADCOM, 0x4321,"Broadcom BCM4306 802.11a Wireless Lan"},
92 { PCI_VENDOR_BROADCOM, 0x4325,"Broadcom BCM4306 802.11b/g Wireless Lan"},
93 { PCI_VENDOR_BROADCOM, 0x4324,"Broadcom BCM4309 802.11a/b/g Wireless Lan" },
94 { PCI_VENDOR_BROADCOM, 0x4318,"Broadcom BCM4318 802.11b/g Wireless Lan" },
95 { PCI_VENDOR_BROADCOM, 0x4319,"Broadcom BCM4318 802.11a/b/g Wireless Lan" },
96 { PCI_VENDOR_BROADCOM, 0x431a,"Broadcom BCM4318 802.11a Wireless Lan" },
97 { 0, 0, NULL }
98 };
99
100 static int
101 bwi_pci_probe(device_t dev)
102 {
103 const struct bwi_dev *b;
104 uint16_t did, vid;
105
106 did = pci_get_device(dev);
107 vid = pci_get_vendor(dev);
108
109 for (b = bwi_devices; b->desc != NULL; ++b) {
110 if (b->did == did && b->vid == vid) {
111 device_set_desc(dev, b->desc);
112 return BUS_PROBE_DEFAULT;
113 }
114 }
115 return ENXIO;
116 }
117
118 static int
119 bwi_pci_attach(device_t dev)
120 {
121 struct bwi_pci_softc *psc = device_get_softc(dev);
122 struct bwi_softc *sc = &psc->sc_sc;
123 int error = ENXIO;
124
125 sc->sc_dev = dev;
126
127 /*
128 * Enable bus mastering.
129 */
130 pci_enable_busmaster(dev);
131
132 /*
133 * Setup memory-mapping of PCI registers.
134 */
135 sc->sc_mem_rid = BWI_PCIR_BAR;
136 sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
137 &sc->sc_mem_rid, RF_ACTIVE);
138 if (sc->sc_mem_res == NULL) {
139 device_printf(dev, "cannot map register space\n");
140 goto bad;
141 }
142 sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res);
143 sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res);
144 /*
145 * Mark device invalid so any interrupts (shared or otherwise)
146 * that arrive before the card is setup are discarded.
147 */
148 sc->sc_invalid = 1;
149
150 /*
151 * Arrange interrupt line.
152 */
153 sc->sc_irq_rid = 0;
154 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
155 &sc->sc_irq_rid,
156 RF_SHAREABLE|RF_ACTIVE);
157 if (sc->sc_irq_res == NULL) {
158 device_printf(dev, "could not map interrupt\n");
159 goto bad1;
160 }
161 if (bus_setup_intr(dev, sc->sc_irq_res,
162 INTR_TYPE_NET | INTR_MPSAFE,
163 NULL, bwi_intr, sc, &sc->sc_irq_handle)) {
164 device_printf(dev, "could not establish interrupt\n");
165 goto bad2;
166 }
167
168 /* Get more PCI information */
169 sc->sc_pci_did = pci_get_device(dev);
170 sc->sc_pci_revid = pci_get_revid(dev);
171 sc->sc_pci_subvid = pci_get_subvendor(dev);
172 sc->sc_pci_subdid = pci_get_subdevice(dev);
173
174 error = bwi_attach(sc);
175 if (error == 0) /* success */
176 return 0;
177
178 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
179 bad2:
180 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
181 bad1:
182 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res);
183 bad:
184 return (error);
185 }
186
187 static int
188 bwi_pci_detach(device_t dev)
189 {
190 struct bwi_pci_softc *psc = device_get_softc(dev);
191 struct bwi_softc *sc = &psc->sc_sc;
192
193 /* check if device was removed */
194 sc->sc_invalid = !bus_child_present(dev);
195
196 bwi_detach(sc);
197
198 bus_generic_detach(dev);
199 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
200 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
201
202 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res);
203
204 return (0);
205 }
206
207 static int
208 bwi_pci_shutdown(device_t dev)
209 {
210 struct bwi_pci_softc *psc = device_get_softc(dev);
211
212 bwi_shutdown(&psc->sc_sc);
213 return (0);
214 }
215
216 static int
217 bwi_pci_suspend(device_t dev)
218 {
219 struct bwi_pci_softc *psc = device_get_softc(dev);
220
221 bwi_suspend(&psc->sc_sc);
222
223 return (0);
224 }
225
226 static int
227 bwi_pci_resume(device_t dev)
228 {
229 struct bwi_pci_softc *psc = device_get_softc(dev);
230
231 bwi_resume(&psc->sc_sc);
232
233 return (0);
234 }
235
236 static device_method_t bwi_pci_methods[] = {
237 /* Device interface */
238 DEVMETHOD(device_probe, bwi_pci_probe),
239 DEVMETHOD(device_attach, bwi_pci_attach),
240 DEVMETHOD(device_detach, bwi_pci_detach),
241 DEVMETHOD(device_shutdown, bwi_pci_shutdown),
242 DEVMETHOD(device_suspend, bwi_pci_suspend),
243 DEVMETHOD(device_resume, bwi_pci_resume),
244
245 { 0,0 }
246 };
247 static driver_t bwi_driver = {
248 "bwi",
249 bwi_pci_methods,
250 sizeof (struct bwi_pci_softc)
251 };
252 static devclass_t bwi_devclass;
253 DRIVER_MODULE(bwi, pci, bwi_driver, bwi_devclass, 0, 0);
254 MODULE_DEPEND(bwi, wlan, 1, 1, 1); /* 802.11 media layer */
255 MODULE_DEPEND(bwi, firmware, 1, 1, 1); /* firmware support */
256 MODULE_DEPEND(bwi, wlan_amrr, 1, 1, 1);
Cache object: 43c9235d0354fd565664628e18e44a8d
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