1 /* $NetBSD: if_bwi_cardbus.c,v 1.3 2022/09/25 17:33:19 thorpej Exp $ */
2 /* $OpenBSD: if_bwi_cardbus.c,v 1.13 2010/08/06 05:26:24 mglocker Exp $ */
3
4 /*
5 * Copyright (c) 2007 Marcus Glocker <mglocker@openbsd.org>
6 * Copyright (c) 2006 Claudio Jeker <claudio@openbsd.org>
7 *
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 */
20
21 /*
22 * Broadcom AirForce BCM43xx IEEE 802.11b/g wireless network driver
23 * CardBus front end
24 */
25
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: if_bwi_cardbus.c,v 1.3 2022/09/25 17:33:19 thorpej Exp $");
28
29 #include "opt_inet.h"
30
31 #include <sys/param.h>
32 #include <sys/callout.h>
33 #include <sys/device.h>
34 #include <sys/kernel.h>
35 #include <sys/mbuf.h>
36 #include <sys/socket.h>
37 #include <sys/sockio.h>
38 #include <sys/systm.h>
39 #include <sys/errno.h>
40
41 #include <machine/endian.h>
42
43 #include <net/if.h>
44 #include <net/if_dl.h>
45 #include <net/if_ether.h>
46 #include <net/if_media.h>
47
48 #include <net80211/ieee80211_var.h>
49 #include <net80211/ieee80211_amrr.h>
50 #include <net80211/ieee80211_radiotap.h>
51
52 #include <dev/pci/pcireg.h>
53 #include <dev/pci/pcivar.h>
54 #include <dev/pci/pcidevs.h>
55
56 #include <dev/cardbus/cardbusvar.h>
57
58 #include <dev/ic/bwireg.h>
59 #include <dev/ic/bwivar.h>
60
61 struct bwi_cardbus_softc {
62 struct bwi_softc csc_bwi;
63
64 /* cardbus specific goo */
65 cardbus_devfunc_t csc_ct;
66 pcitag_t csc_tag;
67
68 bus_size_t csc_mapsize;
69 pcireg_t csc_bar_val;
70 };
71
72 static int bwi_cardbus_match(device_t, cfdata_t, void *);
73 static void bwi_cardbus_attach(device_t, device_t, void *);
74 static int bwi_cardbus_detach(device_t, int);
75 static void bwi_cardbus_setup(struct bwi_cardbus_softc *);
76 static int bwi_cardbus_enable(struct bwi_softc *, int);
77 static void bwi_cardbus_disable(struct bwi_softc *, int);
78 static void bwi_cardbus_conf_write(void *, uint32_t, uint32_t);
79 static uint32_t bwi_cardbus_conf_read(void *, uint32_t);
80
81 CFATTACH_DECL_NEW(bwi_cardbus, sizeof (struct bwi_cardbus_softc),
82 bwi_cardbus_match, bwi_cardbus_attach, bwi_cardbus_detach, NULL);
83
84 static int
bwi_cardbus_match(device_t parent,cfdata_t match,void * aux)85 bwi_cardbus_match(device_t parent, cfdata_t match, void *aux)
86 {
87 struct cardbus_attach_args *ca = aux;
88
89 if (PCI_VENDOR(ca->ca_id) == PCI_VENDOR_BROADCOM) {
90 switch (PCI_PRODUCT(ca->ca_id)) {
91 case PCI_PRODUCT_BROADCOM_BCM4303:
92 case PCI_PRODUCT_BROADCOM_BCM4306:
93 case PCI_PRODUCT_BROADCOM_BCM4306_2:
94 case PCI_PRODUCT_BROADCOM_BCM4307:
95 case PCI_PRODUCT_BROADCOM_BCM4309:
96 case PCI_PRODUCT_BROADCOM_BCM4311:
97 case PCI_PRODUCT_BROADCOM_BCM4312:
98 case PCI_PRODUCT_BROADCOM_BCM4318:
99 case PCI_PRODUCT_BROADCOM_BCM4319:
100 case PCI_PRODUCT_BROADCOM_BCM4322:
101 case PCI_PRODUCT_BROADCOM_BCM43XG:
102 case PCI_PRODUCT_BROADCOM_BCM4328:
103 return (1);
104 default:
105 return (0);
106 }
107 }
108
109 return (0);
110 }
111
112 static void
bwi_cardbus_attach(device_t parent,device_t self,void * aux)113 bwi_cardbus_attach(device_t parent, device_t self, void *aux)
114 {
115 struct bwi_cardbus_softc *csc = device_private(self);
116 struct cardbus_attach_args *ca = aux;
117 struct bwi_softc *sc = &csc->csc_bwi;
118 cardbus_devfunc_t ct = ca->ca_ct;
119 pcireg_t reg;
120 bus_addr_t base;
121 int error;
122
123 aprint_naive("\n");
124 aprint_normal(": Broadcom Wireless\n");
125
126 sc->sc_dev = self;
127 sc->sc_dmat = ca->ca_dmat;
128 csc->csc_ct = ct;
129 csc->csc_tag = ca->ca_tag;
130
131 /* power management hooks */
132 sc->sc_enable = bwi_cardbus_enable;
133 sc->sc_disable = bwi_cardbus_disable;
134
135 /* map control/status registers */
136 error = Cardbus_mapreg_map(ct, BWI_PCIR_BAR,
137 PCI_MAPREG_TYPE_MEM, 0, &sc->sc_mem_bt,
138 &sc->sc_mem_bh, &base, &csc->csc_mapsize);
139 if (error != 0) {
140 aprint_error_dev(self, "can't map mem space\n");
141 return;
142 }
143 csc->csc_bar_val = base | PCI_MAPREG_TYPE_MEM;
144
145 /* set up the PCI configuration registers */
146 bwi_cardbus_setup(csc);
147
148 /* we need to access Cardbus config space from the driver */
149 sc->sc_conf_read = bwi_cardbus_conf_read;
150 sc->sc_conf_write = bwi_cardbus_conf_write;
151
152 reg = (sc->sc_conf_read)(sc, PCI_SUBSYS_ID_REG);
153
154 sc->sc_pci_revid = PCI_REVISION(ca->ca_class);
155 sc->sc_pci_did = PCI_PRODUCT(ca->ca_id);
156 sc->sc_pci_subvid = PCI_VENDOR(reg);
157 sc->sc_pci_subdid = PCI_PRODUCT(reg);
158
159 if (pmf_device_register(self, bwi_suspend, bwi_resume))
160 pmf_class_network_register(self, &sc->sc_if);
161 else
162 aprint_error_dev(self, "couldn't establish power handler\n");
163
164 error = bwi_attach(sc);
165 if (error != 0)
166 bwi_cardbus_detach(self, 0);
167
168 Cardbus_function_disable(ct);
169 }
170
171 static int
bwi_cardbus_detach(device_t self,int flags)172 bwi_cardbus_detach(device_t self, int flags)
173 {
174 struct bwi_cardbus_softc *csc = device_private(self);
175 struct bwi_softc *sc = &csc->csc_bwi;
176 cardbus_devfunc_t ct = csc->csc_ct;
177
178 #ifdef DIAGNOSTIC
179 if (ct == NULL)
180 panic("%s: data structure lacks", device_xname(self));
181 #endif
182
183 pmf_device_deregister(self);
184
185 bwi_detach(sc);
186
187 /* unhook the interrupt handler */
188 if (sc->sc_ih != NULL) {
189 Cardbus_intr_disestablish(ct, sc->sc_ih);
190 sc->sc_ih = NULL;
191 }
192
193 /* release bus space and close window */
194 Cardbus_mapreg_unmap(ct, BWI_PCIR_BAR, sc->sc_mem_bt,
195 sc->sc_mem_bh, csc->csc_mapsize);
196
197 return (0);
198 }
199
200 static void
bwi_cardbus_setup(struct bwi_cardbus_softc * csc)201 bwi_cardbus_setup(struct bwi_cardbus_softc *csc)
202 {
203 cardbus_devfunc_t ct = csc->csc_ct;
204 pcireg_t reg;
205
206 /* program the BAR */
207 Cardbus_conf_write(ct, csc->csc_tag, BWI_PCIR_BAR, csc->csc_bar_val);
208
209 /* enable the appropriate bits in the PCI CSR */
210 reg = Cardbus_conf_read(ct, csc->csc_tag, PCI_COMMAND_STATUS_REG);
211 reg |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE;
212 Cardbus_conf_write(ct, csc->csc_tag, PCI_COMMAND_STATUS_REG, reg);
213 }
214
215 static int
bwi_cardbus_enable(struct bwi_softc * sc,int pmf)216 bwi_cardbus_enable(struct bwi_softc *sc, int pmf)
217 {
218 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc;
219 cardbus_devfunc_t ct = csc->csc_ct;
220
221 if (!pmf) {
222 /* power on the socket */
223 Cardbus_function_enable(ct);
224
225 /* setup the PCI configuration registers */
226 bwi_cardbus_setup(csc);
227 }
228
229 /* map and establish the interrupt handler */
230 sc->sc_ih = Cardbus_intr_establish(ct, IPL_NET, bwi_intr, sc);
231 if (sc->sc_ih == NULL) {
232 aprint_error_dev(sc->sc_dev,
233 "unable to establish interrupt\n");
234 if (!pmf)
235 Cardbus_function_disable(ct);
236 return (1);
237 }
238
239 return (0);
240 }
241
242 static void
bwi_cardbus_disable(struct bwi_softc * sc,int pmf)243 bwi_cardbus_disable(struct bwi_softc *sc, int pmf)
244 {
245 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc;
246 cardbus_devfunc_t ct = csc->csc_ct;
247
248 /* unhook the interrupt handler */
249 if (sc->sc_ih != NULL) {
250 Cardbus_intr_disestablish(ct, sc->sc_ih);
251 sc->sc_ih = NULL;
252 }
253
254 if (!pmf) {
255 /* power down the socket */
256 Cardbus_function_disable(ct);
257 }
258 }
259
260 static void
bwi_cardbus_conf_write(void * sc,uint32_t reg,uint32_t val)261 bwi_cardbus_conf_write(void *sc, uint32_t reg, uint32_t val)
262 {
263 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc;
264
265 Cardbus_conf_write(csc->csc_ct, csc->csc_tag, reg, val);
266 }
267
268 static uint32_t
bwi_cardbus_conf_read(void * sc,uint32_t reg)269 bwi_cardbus_conf_read(void *sc, uint32_t reg)
270 {
271 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc;
272
273 return Cardbus_conf_read(csc->csc_ct, csc->csc_tag, reg);
274 }
275