1 /* $OpenBSD: if_bwi_cardbus.c,v 1.17 2024/05/24 06:26:47 jsg Exp $ */
2
3 /*
4 * Copyright (c) 2007 Marcus Glocker <mglocker@openbsd.org>
5 * Copyright (c) 2006 Claudio Jeker <claudio@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 * Cardbus front-end for the Broadcom AirForce
22 */
23
24 #include "bpfilter.h"
25
26 #include <sys/param.h>
27 #include <sys/systm.h>
28 #include <sys/timeout.h>
29
30 #include <net/if.h>
31 #include <net/if_media.h>
32
33 #include <netinet/in.h>
34 #include <netinet/if_ether.h>
35
36 #include <net80211/ieee80211_var.h>
37 #include <net80211/ieee80211_amrr.h>
38 #include <net80211/ieee80211_radiotap.h>
39
40 #include <dev/pci/pcireg.h>
41 #include <dev/pci/pcivar.h>
42 #include <dev/pci/pcidevs.h>
43
44 #include <dev/cardbus/cardbusvar.h>
45
46 #include <dev/ic/bwivar.h>
47
48 struct bwi_cardbus_softc {
49 struct bwi_softc csc_bwi;
50
51 /* cardbus specific goo */
52 cardbus_devfunc_t csc_ct;
53 pcitag_t csc_tag;
54 void *csc_ih;
55
56 bus_size_t csc_mapsize;
57 pcireg_t csc_bar_val;
58 int csc_intrline;
59 pci_chipset_tag_t csc_pc;
60 };
61
62 int bwi_cardbus_match(struct device *, void *, void*);
63 void bwi_cardbus_attach(struct device *, struct device *, void *);
64 int bwi_cardbus_detach(struct device *, int);
65 void bwi_cardbus_setup(struct bwi_cardbus_softc *);
66 int bwi_cardbus_enable(struct bwi_softc *);
67 void bwi_cardbus_disable(struct bwi_softc *);
68 void bwi_cardbus_conf_write(void *, uint32_t, uint32_t);
69 uint32_t bwi_cardbus_conf_read(void *, uint32_t);
70
71 const struct cfattach bwi_cardbus_ca = {
72 sizeof (struct bwi_cardbus_softc), bwi_cardbus_match,
73 bwi_cardbus_attach, bwi_cardbus_detach
74 };
75
76 static const struct pci_matchid bwi_cardbus_devices[] = {
77 { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4303 },
78 { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306 },
79 { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_2 },
80 { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4307 },
81 { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4309 },
82 { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4318 },
83 { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4319 },
84 { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM43XG }
85 };
86
87 int
bwi_cardbus_match(struct device * parent,void * match,void * aux)88 bwi_cardbus_match(struct device *parent, void *match, void *aux)
89 {
90 return (cardbus_matchbyid(aux, bwi_cardbus_devices,
91 sizeof (bwi_cardbus_devices) / sizeof (bwi_cardbus_devices[0])));
92 }
93
94 void
bwi_cardbus_attach(struct device * parent,struct device * self,void * aux)95 bwi_cardbus_attach(struct device *parent, struct device *self, void *aux)
96 {
97 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)self;
98 struct cardbus_attach_args *ca = aux;
99 struct bwi_softc *sc = &csc->csc_bwi;
100 cardbus_devfunc_t ct = ca->ca_ct;
101 pcireg_t reg;
102 bus_addr_t base;
103 int error;
104
105 sc->sc_dmat = ca->ca_dmat;
106 csc->csc_ct = ct;
107 csc->csc_tag = ca->ca_tag;
108 csc->csc_intrline = ca->ca_intrline;
109 csc->csc_pc = ca->ca_pc;
110
111 /* power management hooks */
112 sc->sc_enable = bwi_cardbus_enable;
113 sc->sc_disable = bwi_cardbus_disable;
114 //sc->sc_power = bwi_cardbus_power;
115
116 /* map control/status registers */
117 error = Cardbus_mapreg_map(ct, CARDBUS_BASE0_REG,
118 PCI_MAPREG_TYPE_MEM, 0, &sc->sc_mem_bt,
119 &sc->sc_mem_bh, &base, &csc->csc_mapsize);
120 if (error != 0) {
121 printf(": can't map mem space\n");
122 return;
123 }
124 csc->csc_bar_val = base | PCI_MAPREG_TYPE_MEM;
125
126 /* set up the PCI configuration registers */
127 bwi_cardbus_setup(csc);
128
129 printf(": irq %d", csc->csc_intrline);
130
131 /* we need to access Cardbus config space from the driver */
132 sc->sc_conf_read = bwi_cardbus_conf_read;
133 sc->sc_conf_write = bwi_cardbus_conf_write;
134
135 reg = (sc->sc_conf_read)(sc, PCI_SUBSYS_ID_REG);
136
137 sc->sc_pci_revid = PCI_REVISION(ca->ca_class);
138 sc->sc_pci_did = PCI_PRODUCT(ca->ca_id);
139 sc->sc_pci_subvid = PCI_VENDOR(reg);
140 sc->sc_pci_subdid = PCI_PRODUCT(reg);
141
142 error = bwi_attach(sc);
143 if (error != 0)
144 bwi_cardbus_detach(&sc->sc_dev, 0);
145
146 Cardbus_function_disable(ct);
147 }
148
149 int
bwi_cardbus_detach(struct device * self,int flags)150 bwi_cardbus_detach(struct device *self, int flags)
151 {
152 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)self;
153 struct bwi_softc *sc = &csc->csc_bwi;
154 cardbus_devfunc_t ct = csc->csc_ct;
155 cardbus_chipset_tag_t cc = ct->ct_cc;
156 cardbus_function_tag_t cf = ct->ct_cf;
157 int error;
158
159 error = bwi_detach(sc);
160 if (error != 0)
161 return (error);
162
163 /* unhook the interrupt handler */
164 if (csc->csc_ih != NULL) {
165 cardbus_intr_disestablish(cc, cf, csc->csc_ih);
166 csc->csc_ih = NULL;
167 }
168
169 /* release bus space and close window */
170 Cardbus_mapreg_unmap(ct, CARDBUS_BASE0_REG, sc->sc_mem_bt,
171 sc->sc_mem_bh, csc->csc_mapsize);
172
173 return (0);
174 }
175
176 void
bwi_cardbus_setup(struct bwi_cardbus_softc * csc)177 bwi_cardbus_setup(struct bwi_cardbus_softc *csc)
178 {
179 cardbus_devfunc_t ct = csc->csc_ct;
180 cardbus_chipset_tag_t cc = ct->ct_cc;
181 pci_chipset_tag_t pc = csc->csc_pc;
182 cardbus_function_tag_t cf = ct->ct_cf;
183 pcireg_t reg;
184
185 /* program the BAR */
186 pci_conf_write(pc, csc->csc_tag, CARDBUS_BASE0_REG,
187 csc->csc_bar_val);
188
189 /* make sure the right access type is on the cardbus bridge */
190 (*cf->cardbus_ctrl)(cc, CARDBUS_MEM_ENABLE);
191 (*cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
192
193 /* enable the appropriate bits in the PCI CSR */
194 reg = pci_conf_read(pc, csc->csc_tag,
195 PCI_COMMAND_STATUS_REG);
196 reg |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE;
197 pci_conf_write(pc, csc->csc_tag, PCI_COMMAND_STATUS_REG,
198 reg);
199 }
200
201 int
bwi_cardbus_enable(struct bwi_softc * sc)202 bwi_cardbus_enable(struct bwi_softc *sc)
203 {
204 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc;
205 cardbus_devfunc_t ct = csc->csc_ct;
206 cardbus_chipset_tag_t cc = ct->ct_cc;
207 cardbus_function_tag_t cf = ct->ct_cf;
208
209 /* power on the socket */
210 Cardbus_function_enable(ct);
211
212 /* setup the PCI configuration registers */
213 bwi_cardbus_setup(csc);
214
215 /* map and establish the interrupt handler */
216 csc->csc_ih = cardbus_intr_establish(cc, cf, csc->csc_intrline, IPL_NET,
217 bwi_intr, sc, sc->sc_dev.dv_xname);
218 if (csc->csc_ih == NULL) {
219 printf("%s: could not establish interrupt at %d\n",
220 sc->sc_dev.dv_xname, csc->csc_intrline);
221 Cardbus_function_disable(ct);
222 return (1);
223 }
224
225 return (0);
226 }
227
228 void
bwi_cardbus_disable(struct bwi_softc * sc)229 bwi_cardbus_disable(struct bwi_softc *sc)
230 {
231 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc;
232 cardbus_devfunc_t ct = csc->csc_ct;
233 cardbus_chipset_tag_t cc = ct->ct_cc;
234 cardbus_function_tag_t cf = ct->ct_cf;
235
236 /* unhook the interrupt handler */
237 cardbus_intr_disestablish(cc, cf, csc->csc_ih);
238 csc->csc_ih = NULL;
239
240 /* power down the socket */
241 Cardbus_function_disable(ct);
242 }
243
244 void
bwi_cardbus_conf_write(void * self,uint32_t reg,uint32_t val)245 bwi_cardbus_conf_write(void *self, uint32_t reg, uint32_t val)
246 {
247 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)self;
248 pci_chipset_tag_t pc = csc->csc_pc;
249
250 pci_conf_write(pc, csc->csc_tag, reg, val);
251 }
252
253 uint32_t
bwi_cardbus_conf_read(void * self,uint32_t reg)254 bwi_cardbus_conf_read(void *self, uint32_t reg)
255 {
256 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)self;
257 pci_chipset_tag_t pc = csc->csc_pc;
258
259 return (pci_conf_read(pc, csc->csc_tag, reg));
260 }
261