1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2002-2007 Sam Leffler, Errno Consulting
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, this list of conditions and the following disclaimer,
12 * without modification.
13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
15 * redistribution must be conditioned upon including a substantially
16 * similar Disclaimer requirement for further binary redistribution.
17 *
18 * NO WARRANTY
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
22 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
23 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
24 * OR 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
27 * IN 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
29 * THE POSSIBILITY OF SUCH DAMAGES.
30 */
31
32 #include <sys/cdefs.h>
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/malloc.h>
45 #include <sys/mutex.h>
46 #include <sys/errno.h>
47
48 #include <machine/bus.h>
49 #include <machine/resource.h>
50 #include <sys/bus.h>
51 #include <sys/rman.h>
52
53 #include <sys/socket.h>
54
55 #include <net/if.h>
56 #include <net/if_var.h>
57 #include <net/if_media.h>
58 #include <net/if_arp.h>
59 #include <net/ethernet.h>
60
61 #include <net80211/ieee80211_var.h>
62 #include <net80211/ieee80211_radiotap.h>
63 #include <net80211/ieee80211_amrr.h>
64
65 #include <dev/pci/pcivar.h>
66 #include <dev/pci/pcireg.h>
67
68 #include <dev/bwi/if_bwivar.h>
69 #include <dev/bwi/if_bwireg.h>
70 #include <dev/bwi/bitops.h>
71
72 /*
73 * PCI glue.
74 */
75
76 struct bwi_pci_softc {
77 struct bwi_softc sc_sc;
78 };
79
80 #define BS_BAR 0x10
81 #define PCIR_RETRY_TIMEOUT 0x41
82
83 static const struct bwi_dev {
84 uint16_t vid;
85 uint16_t did;
86 const char *desc;
87 } bwi_devices[] = {
88 { PCI_VENDOR_BROADCOM, 0x4301,"Broadcom BCM4301 802.11b Wireless Lan" },
89 { PCI_VENDOR_BROADCOM, 0x4307,"Broadcom BCM4307 802.11b Wireless Lan" },
90 { PCI_VENDOR_BROADCOM, 0x4311,"Broadcom BCM4311 802.11b/g Wireless Lan" },
91 { PCI_VENDOR_BROADCOM, 0x4312,"Broadcom BCM4312 802.11a/b/g Wireless Lan" },
92 { PCI_VENDOR_BROADCOM, 0x4313,"Broadcom BCM4312 802.11a Wireless Lan" },
93 { PCI_VENDOR_BROADCOM, 0x4320,"Broadcom BCM4306 802.11b/g Wireless Lan"},
94 { PCI_VENDOR_BROADCOM, 0x4321,"Broadcom BCM4306 802.11a Wireless Lan"},
95 { PCI_VENDOR_BROADCOM, 0x4325,"Broadcom BCM4306 802.11b/g Wireless Lan"},
96 { PCI_VENDOR_BROADCOM, 0x4324,"Broadcom BCM4309 802.11a/b/g Wireless Lan" },
97 { PCI_VENDOR_BROADCOM, 0x4318,"Broadcom BCM4318 802.11b/g Wireless Lan" },
98 { PCI_VENDOR_BROADCOM, 0x4319,"Broadcom BCM4318 802.11a/b/g Wireless Lan" },
99 { PCI_VENDOR_BROADCOM, 0x431a,"Broadcom BCM4318 802.11a Wireless Lan" },
100 { 0, 0, NULL }
101 };
102
103 static int
bwi_pci_probe(device_t dev)104 bwi_pci_probe(device_t dev)
105 {
106 const struct bwi_dev *b;
107 uint16_t did, vid;
108
109 did = pci_get_device(dev);
110 vid = pci_get_vendor(dev);
111
112 for (b = bwi_devices; b->desc != NULL; ++b) {
113 if (b->did == did && b->vid == vid) {
114 device_set_desc(dev, b->desc);
115 return BUS_PROBE_DEFAULT;
116 }
117 }
118 return ENXIO;
119 }
120
121 static int
bwi_pci_attach(device_t dev)122 bwi_pci_attach(device_t dev)
123 {
124 struct bwi_pci_softc *psc = device_get_softc(dev);
125 struct bwi_softc *sc = &psc->sc_sc;
126 int error = ENXIO;
127
128 sc->sc_dev = dev;
129
130 /*
131 * Enable bus mastering.
132 */
133 pci_enable_busmaster(dev);
134
135 /*
136 * Setup memory-mapping of PCI registers.
137 */
138 sc->sc_mem_rid = BWI_PCIR_BAR;
139 sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
140 &sc->sc_mem_rid, RF_ACTIVE);
141 if (sc->sc_mem_res == NULL) {
142 device_printf(dev, "cannot map register space\n");
143 goto bad;
144 }
145 sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res);
146 sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res);
147 /*
148 * Mark device invalid so any interrupts (shared or otherwise)
149 * that arrive before the card is setup are discarded.
150 */
151 sc->sc_invalid = 1;
152
153 /*
154 * Arrange interrupt line.
155 */
156 sc->sc_irq_rid = 0;
157 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
158 &sc->sc_irq_rid,
159 RF_SHAREABLE|RF_ACTIVE);
160 if (sc->sc_irq_res == NULL) {
161 device_printf(dev, "could not map interrupt\n");
162 goto bad1;
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 if ((error = bwi_attach(sc)) != 0)
172 goto bad2;
173
174 if (bus_setup_intr(dev, sc->sc_irq_res,
175 INTR_TYPE_NET | INTR_MPSAFE,
176 NULL, bwi_intr, sc, &sc->sc_irq_handle)) {
177 device_printf(dev, "could not establish interrupt\n");
178 goto bad2;
179 }
180 return (0);
181
182 bad2:
183 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
184 bad1:
185 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res);
186 bad:
187 return (error);
188 }
189
190 static int
bwi_pci_detach(device_t dev)191 bwi_pci_detach(device_t dev)
192 {
193 struct bwi_pci_softc *psc = device_get_softc(dev);
194 struct bwi_softc *sc = &psc->sc_sc;
195
196 /* check if device was removed */
197 sc->sc_invalid = !bus_child_present(dev);
198
199 bwi_detach(sc);
200
201 bus_generic_detach(dev);
202 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
203 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
204
205 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res);
206
207 return (0);
208 }
209
210 static int
bwi_pci_shutdown(device_t dev)211 bwi_pci_shutdown(device_t dev)
212 {
213 struct bwi_pci_softc *psc = device_get_softc(dev);
214
215 bwi_shutdown(&psc->sc_sc);
216 return (0);
217 }
218
219 static int
bwi_pci_suspend(device_t dev)220 bwi_pci_suspend(device_t dev)
221 {
222 struct bwi_pci_softc *psc = device_get_softc(dev);
223
224 bwi_suspend(&psc->sc_sc);
225
226 return (0);
227 }
228
229 static int
bwi_pci_resume(device_t dev)230 bwi_pci_resume(device_t dev)
231 {
232 struct bwi_pci_softc *psc = device_get_softc(dev);
233
234 bwi_resume(&psc->sc_sc);
235
236 return (0);
237 }
238
239 static device_method_t bwi_pci_methods[] = {
240 /* Device interface */
241 DEVMETHOD(device_probe, bwi_pci_probe),
242 DEVMETHOD(device_attach, bwi_pci_attach),
243 DEVMETHOD(device_detach, bwi_pci_detach),
244 DEVMETHOD(device_shutdown, bwi_pci_shutdown),
245 DEVMETHOD(device_suspend, bwi_pci_suspend),
246 DEVMETHOD(device_resume, bwi_pci_resume),
247 { 0,0 }
248 };
249
250 static driver_t bwi_driver = {
251 "bwi",
252 bwi_pci_methods,
253 sizeof (struct bwi_pci_softc)
254 };
255
256 DRIVER_MODULE(bwi, pci, bwi_driver, 0, 0);
257 MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, bwi, bwi_devices,
258 nitems(bwi_devices) - 1);
259 MODULE_DEPEND(bwi, wlan, 1, 1, 1); /* 802.11 media layer */
260 MODULE_DEPEND(bwi, firmware, 1, 1, 1); /* firmware support */
261 MODULE_DEPEND(bwi, wlan_amrr, 1, 1, 1);
262