1 /* $NetBSD: if_bwi_pci.c,v 1.18 2023/12/20 05:08:34 thorpej Exp $ */
2 /* $OpenBSD: if_bwi_pci.c,v 1.6 2008/02/14 22:10:02 brad Exp $ */
3
4 /*
5 * Copyright (c) 2007 Marcus Glocker <mglocker@openbsd.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 /*
21 * Broadcom AirForce BCM43xx IEEE 802.11b/g wireless network driver
22 * PCI front end
23 */
24
25
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: if_bwi_pci.c,v 1.18 2023/12/20 05:08:34 thorpej Exp $");
28
29 #include <sys/param.h>
30 #include <sys/callout.h>
31 #include <sys/device.h>
32 #include <sys/kernel.h>
33 #include <sys/mbuf.h>
34 #include <sys/socket.h>
35 #include <sys/sockio.h>
36 #include <sys/systm.h>
37
38 #include <sys/bus.h>
39
40 #include <net/if.h>
41 #include <net/if_dl.h>
42 #include <net/if_ether.h>
43 #include <net/if_media.h>
44
45 #include <net80211/ieee80211_var.h>
46 #include <net80211/ieee80211_amrr.h>
47 #include <net80211/ieee80211_radiotap.h>
48
49 #include <dev/ic/bwivar.h>
50
51 #include <dev/pci/pcireg.h>
52 #include <dev/pci/pcivar.h>
53 #include <dev/pci/pcidevs.h>
54
55 /* Base Address Register */
56 #define BWI_PCI_BAR0 PCI_BAR(0)
57
58 static int bwi_pci_match(device_t, cfdata_t, void *);
59 static void bwi_pci_attach(device_t, device_t, void *);
60 static int bwi_pci_detach(device_t, int);
61 static void bwi_pci_conf_write(void *, uint32_t, uint32_t);
62 static uint32_t bwi_pci_conf_read(void *, uint32_t);
63
64 struct bwi_pci_softc {
65 struct bwi_softc psc_bwi;
66
67 pci_chipset_tag_t psc_pc;
68 pcitag_t psc_pcitag;
69
70 bus_size_t psc_mapsize;
71 };
72
73 CFATTACH_DECL_NEW(bwi_pci, sizeof(struct bwi_pci_softc),
74 bwi_pci_match, bwi_pci_attach, bwi_pci_detach, NULL);
75
76 static const struct device_compatible_entry compat_data[] = {
77 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM,
78 PCI_PRODUCT_BROADCOM_BCM4303), },
79
80 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM,
81 PCI_PRODUCT_BROADCOM_BCM4306), },
82
83 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM,
84 PCI_PRODUCT_BROADCOM_BCM4306_2), },
85
86 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM,
87 PCI_PRODUCT_BROADCOM_BCM4307), },
88
89 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM,
90 PCI_PRODUCT_BROADCOM_BCM4309), },
91
92 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM,
93 PCI_PRODUCT_BROADCOM_BCM4311), },
94
95 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM,
96 PCI_PRODUCT_BROADCOM_BCM4312), },
97
98 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM,
99 PCI_PRODUCT_BROADCOM_BCM4318), },
100
101 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM,
102 PCI_PRODUCT_BROADCOM_BCM4319), },
103
104 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM,
105 PCI_PRODUCT_BROADCOM_BCM4322), },
106
107 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM,
108 PCI_PRODUCT_BROADCOM_BCM43XG), },
109
110 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM,
111 PCI_PRODUCT_BROADCOM_BCM4328), },
112
113 PCI_COMPAT_EOL
114 };
115
116 static int
bwi_pci_match(device_t parent,cfdata_t match,void * aux)117 bwi_pci_match(device_t parent, cfdata_t match, void *aux)
118 {
119 struct pci_attach_args *pa = aux;
120
121 return pci_compatible_match(pa, compat_data);
122 }
123
124 static void
bwi_pci_attach(device_t parent,device_t self,void * aux)125 bwi_pci_attach(device_t parent, device_t self, void *aux)
126 {
127 struct bwi_pci_softc *psc = device_private(self);
128 struct pci_attach_args *pa = aux;
129 struct bwi_softc *sc = &psc->psc_bwi;
130 const char *intrstr = NULL;
131 pci_intr_handle_t ih;
132 pcireg_t memtype, reg;
133 int error = 0;
134 char intrbuf[PCI_INTRSTR_LEN];
135
136 aprint_naive("\n");
137 aprint_normal(": Broadcom Wireless\n");
138
139 sc->sc_dev = self;
140 sc->sc_dmat = pa->pa_dmat;
141 psc->psc_pc = pa->pa_pc;
142 psc->psc_pcitag = pa->pa_tag;
143
144 /* map control / status registers */
145 memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, BWI_PCI_BAR0);
146 switch (memtype) {
147 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT:
148 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT:
149 break;
150 default:
151 aprint_error_dev(self, "invalid base address register\n");
152 return;
153 }
154
155 if (pci_mapreg_map(pa, BWI_PCI_BAR0, memtype, 0, &sc->sc_mem_bt,
156 &sc->sc_mem_bh, NULL, &psc->psc_mapsize) != 0) {
157 aprint_error_dev(self, "could not map mem space\n");
158 return;
159 }
160
161 /* map interrupt */
162 if (pci_intr_map(pa, &ih) != 0) {
163 aprint_error_dev(self, "could not map interrupt\n");
164 goto fail;
165 }
166
167 /* establish interrupt */
168 intrstr = pci_intr_string(psc->psc_pc, ih, intrbuf, sizeof(intrbuf));
169 sc->sc_ih = pci_intr_establish_xname(psc->psc_pc, ih, IPL_NET, bwi_intr,
170 sc, device_xname(self));
171 if (sc->sc_ih == NULL) {
172 aprint_error_dev(self, "could not establish interrupt");
173 if (intrstr != NULL)
174 aprint_error(" at %s", intrstr);
175 aprint_error("\n");
176 goto fail;
177 }
178 aprint_normal_dev(self, "interrupting at %s\n", intrstr);
179
180 /* we need to access PCI config space from the driver */
181 sc->sc_conf_write = bwi_pci_conf_write;
182 sc->sc_conf_read = bwi_pci_conf_read;
183
184 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
185
186 sc->sc_pci_revid = PCI_REVISION(pa->pa_class);
187 sc->sc_pci_did = PCI_PRODUCT(pa->pa_id);
188 sc->sc_pci_subvid = PCI_VENDOR(reg);
189 sc->sc_pci_subdid = PCI_PRODUCT(reg);
190
191 if (!pmf_device_register(self, bwi_suspend, bwi_resume))
192 aprint_error_dev(self, "couldn't establish power handler\n");
193
194 error = bwi_attach(sc);
195 if (error)
196 goto fail;
197 return;
198
199 fail:
200 if (sc->sc_ih) {
201 pci_intr_disestablish(psc->psc_pc, sc->sc_ih);
202 sc->sc_ih = NULL;
203 }
204 if (psc->psc_mapsize) {
205 bus_space_unmap(sc->sc_mem_bt, sc->sc_mem_bh, psc->psc_mapsize);
206 psc->psc_mapsize = 0;
207 }
208 return;
209 }
210
211 int
bwi_pci_detach(device_t self,int flags)212 bwi_pci_detach(device_t self, int flags)
213 {
214 struct bwi_pci_softc *psc = device_private(self);
215 struct bwi_softc *sc = &psc->psc_bwi;
216
217 pmf_device_deregister(self);
218
219 bwi_detach(sc);
220
221 if (sc->sc_ih != NULL) {
222 pci_intr_disestablish(psc->psc_pc, sc->sc_ih);
223 sc->sc_ih = NULL;
224 }
225
226 return (0);
227 }
228
229 static void
bwi_pci_conf_write(void * sc,uint32_t reg,uint32_t val)230 bwi_pci_conf_write(void *sc, uint32_t reg, uint32_t val)
231 {
232 struct bwi_pci_softc *psc = (struct bwi_pci_softc *)sc;
233
234 pci_conf_write(psc->psc_pc, psc->psc_pcitag, reg, val);
235 }
236
237 static uint32_t
bwi_pci_conf_read(void * sc,uint32_t reg)238 bwi_pci_conf_read(void *sc, uint32_t reg)
239 {
240 struct bwi_pci_softc *psc = (struct bwi_pci_softc *)sc;
241
242 return (pci_conf_read(psc->psc_pc, psc->psc_pcitag, reg));
243 }
244