Line data Source code
1 : /* $OpenBSD: if_bwi_cardbus.c,v 1.15 2013/12/06 21:03:02 deraadt 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/mbuf.h>
28 : #include <sys/socket.h>
29 : #include <sys/systm.h>
30 : #include <sys/timeout.h>
31 :
32 : #include <net/if.h>
33 : #include <net/if_media.h>
34 :
35 : #include <netinet/in.h>
36 : #include <netinet/if_ether.h>
37 :
38 : #include <net80211/ieee80211_var.h>
39 : #include <net80211/ieee80211_amrr.h>
40 : #include <net80211/ieee80211_radiotap.h>
41 :
42 : #include <dev/pci/pcireg.h>
43 : #include <dev/pci/pcivar.h>
44 : #include <dev/pci/pcidevs.h>
45 :
46 : #include <dev/cardbus/cardbusvar.h>
47 :
48 : #include <dev/ic/bwivar.h>
49 :
50 : struct bwi_cardbus_softc {
51 : struct bwi_softc csc_bwi;
52 :
53 : /* cardbus specific goo */
54 : cardbus_devfunc_t csc_ct;
55 : pcitag_t csc_tag;
56 : void *csc_ih;
57 :
58 : bus_size_t csc_mapsize;
59 : pcireg_t csc_bar_val;
60 : int csc_intrline;
61 : pci_chipset_tag_t csc_pc;
62 : };
63 :
64 : int bwi_cardbus_match(struct device *, void *, void*);
65 : void bwi_cardbus_attach(struct device *, struct device *, void *);
66 : int bwi_cardbus_detach(struct device *, int);
67 : void bwi_cardbus_setup(struct bwi_cardbus_softc *);
68 : int bwi_cardbus_enable(struct bwi_softc *);
69 : void bwi_cardbus_disable(struct bwi_softc *);
70 : void bwi_cardbus_conf_write(void *, uint32_t, uint32_t);
71 : uint32_t bwi_cardbus_conf_read(void *, uint32_t);
72 :
73 : struct cfattach bwi_cardbus_ca = {
74 : sizeof (struct bwi_cardbus_softc), bwi_cardbus_match,
75 : bwi_cardbus_attach, bwi_cardbus_detach
76 : };
77 :
78 : static const struct pci_matchid bwi_cardbus_devices[] = {
79 : { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4303 },
80 : { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306 },
81 : { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4306_2 },
82 : { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4307 },
83 : { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4309 },
84 : { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4318 },
85 : { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM4319 },
86 : { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM43XG }
87 : };
88 :
89 : int
90 0 : bwi_cardbus_match(struct device *parent, void *match, void *aux)
91 : {
92 0 : return (cardbus_matchbyid(aux, bwi_cardbus_devices,
93 : sizeof (bwi_cardbus_devices) / sizeof (bwi_cardbus_devices[0])));
94 : }
95 :
96 : void
97 0 : bwi_cardbus_attach(struct device *parent, struct device *self, void *aux)
98 : {
99 0 : struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)self;
100 0 : struct cardbus_attach_args *ca = aux;
101 0 : struct bwi_softc *sc = &csc->csc_bwi;
102 0 : cardbus_devfunc_t ct = ca->ca_ct;
103 : pcireg_t reg;
104 0 : bus_addr_t base;
105 : int error;
106 :
107 0 : sc->sc_dmat = ca->ca_dmat;
108 0 : csc->csc_ct = ct;
109 0 : csc->csc_tag = ca->ca_tag;
110 0 : csc->csc_intrline = ca->ca_intrline;
111 0 : csc->csc_pc = ca->ca_pc;
112 :
113 : /* power management hooks */
114 0 : sc->sc_enable = bwi_cardbus_enable;
115 0 : sc->sc_disable = bwi_cardbus_disable;
116 : //sc->sc_power = bwi_cardbus_power;
117 :
118 : /* map control/status registers */
119 0 : error = Cardbus_mapreg_map(ct, CARDBUS_BASE0_REG,
120 : PCI_MAPREG_TYPE_MEM, 0, &sc->sc_mem_bt,
121 : &sc->sc_mem_bh, &base, &csc->csc_mapsize);
122 0 : if (error != 0) {
123 0 : printf(": can't map mem space\n");
124 0 : return;
125 : }
126 0 : csc->csc_bar_val = base | PCI_MAPREG_TYPE_MEM;
127 :
128 : /* set up the PCI configuration registers */
129 0 : bwi_cardbus_setup(csc);
130 :
131 0 : printf(": irq %d", csc->csc_intrline);
132 :
133 : /* we need to access Cardbus config space from the driver */
134 0 : sc->sc_conf_read = bwi_cardbus_conf_read;
135 0 : sc->sc_conf_write = bwi_cardbus_conf_write;
136 :
137 0 : reg = (sc->sc_conf_read)(sc, PCI_SUBSYS_ID_REG);
138 :
139 0 : sc->sc_pci_revid = PCI_REVISION(ca->ca_class);
140 0 : sc->sc_pci_did = PCI_PRODUCT(ca->ca_id);
141 0 : sc->sc_pci_subvid = PCI_VENDOR(reg);
142 0 : sc->sc_pci_subdid = PCI_PRODUCT(reg);
143 :
144 0 : error = bwi_attach(sc);
145 0 : if (error != 0)
146 0 : bwi_cardbus_detach(&sc->sc_dev, 0);
147 :
148 0 : Cardbus_function_disable(ct);
149 0 : }
150 :
151 : int
152 0 : bwi_cardbus_detach(struct device *self, int flags)
153 : {
154 0 : struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)self;
155 0 : struct bwi_softc *sc = &csc->csc_bwi;
156 0 : cardbus_devfunc_t ct = csc->csc_ct;
157 0 : cardbus_chipset_tag_t cc = ct->ct_cc;
158 0 : cardbus_function_tag_t cf = ct->ct_cf;
159 : int error;
160 :
161 0 : error = bwi_detach(sc);
162 0 : if (error != 0)
163 0 : return (error);
164 :
165 : /* unhook the interrupt handler */
166 0 : if (csc->csc_ih != NULL) {
167 0 : cardbus_intr_disestablish(cc, cf, csc->csc_ih);
168 0 : csc->csc_ih = NULL;
169 0 : }
170 :
171 : /* release bus space and close window */
172 0 : Cardbus_mapreg_unmap(ct, CARDBUS_BASE0_REG, sc->sc_mem_bt,
173 : sc->sc_mem_bh, csc->csc_mapsize);
174 :
175 0 : return (0);
176 0 : }
177 :
178 : void
179 0 : bwi_cardbus_setup(struct bwi_cardbus_softc *csc)
180 : {
181 0 : cardbus_devfunc_t ct = csc->csc_ct;
182 0 : cardbus_chipset_tag_t cc = ct->ct_cc;
183 0 : pci_chipset_tag_t pc = csc->csc_pc;
184 0 : cardbus_function_tag_t cf = ct->ct_cf;
185 : pcireg_t reg;
186 :
187 : /* program the BAR */
188 0 : pci_conf_write(pc, csc->csc_tag, CARDBUS_BASE0_REG,
189 0 : csc->csc_bar_val);
190 :
191 : /* make sure the right access type is on the cardbus bridge */
192 0 : (*cf->cardbus_ctrl)(cc, CARDBUS_MEM_ENABLE);
193 0 : (*cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
194 :
195 : /* enable the appropriate bits in the PCI CSR */
196 0 : reg = pci_conf_read(pc, csc->csc_tag,
197 : PCI_COMMAND_STATUS_REG);
198 0 : reg |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE;
199 0 : pci_conf_write(pc, csc->csc_tag, PCI_COMMAND_STATUS_REG,
200 : reg);
201 0 : }
202 :
203 : int
204 0 : bwi_cardbus_enable(struct bwi_softc *sc)
205 : {
206 0 : struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc;
207 0 : cardbus_devfunc_t ct = csc->csc_ct;
208 0 : cardbus_chipset_tag_t cc = ct->ct_cc;
209 0 : cardbus_function_tag_t cf = ct->ct_cf;
210 :
211 : /* power on the socket */
212 0 : Cardbus_function_enable(ct);
213 :
214 : /* setup the PCI configuration registers */
215 0 : bwi_cardbus_setup(csc);
216 :
217 : /* map and establish the interrupt handler */
218 0 : csc->csc_ih = cardbus_intr_establish(cc, cf, csc->csc_intrline, IPL_NET,
219 0 : bwi_intr, sc, sc->sc_dev.dv_xname);
220 0 : if (csc->csc_ih == NULL) {
221 0 : printf("%s: could not establish interrupt at %d\n",
222 0 : sc->sc_dev.dv_xname, csc->csc_intrline);
223 0 : Cardbus_function_disable(ct);
224 0 : return (1);
225 : }
226 :
227 0 : return (0);
228 0 : }
229 :
230 : void
231 0 : bwi_cardbus_disable(struct bwi_softc *sc)
232 : {
233 0 : struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc;
234 0 : cardbus_devfunc_t ct = csc->csc_ct;
235 0 : cardbus_chipset_tag_t cc = ct->ct_cc;
236 0 : cardbus_function_tag_t cf = ct->ct_cf;
237 :
238 : /* unhook the interrupt handler */
239 0 : cardbus_intr_disestablish(cc, cf, csc->csc_ih);
240 0 : csc->csc_ih = NULL;
241 :
242 : /* power down the socket */
243 0 : Cardbus_function_disable(ct);
244 0 : }
245 :
246 : void
247 0 : bwi_cardbus_conf_write(void *self, uint32_t reg, uint32_t val)
248 : {
249 0 : struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)self;
250 0 : pci_chipset_tag_t pc = csc->csc_pc;
251 :
252 0 : pci_conf_write(pc, csc->csc_tag, reg, val);
253 0 : }
254 :
255 : uint32_t
256 0 : bwi_cardbus_conf_read(void *self, uint32_t reg)
257 : {
258 0 : struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)self;
259 0 : pci_chipset_tag_t pc = csc->csc_pc;
260 :
261 0 : return (pci_conf_read(pc, csc->csc_tag, reg));
262 : }
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