1 /* $NetBSD: if_ral_cardbus.c,v 1.26 2022/09/25 17:33:19 thorpej Exp $ */
2 /* $OpenBSD: if_ral_cardbus.c,v 1.6 2006/01/09 20:03:31 damien Exp $ */
3
4 /*-
5 * Copyright (c) 2005, 2006
6 * Damien Bergamini <damien.bergamini@free.fr>
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 * CardBus front-end for the Ralink RT2560/RT2561/RT2561S/RT2661 driver.
23 */
24 #include <sys/cdefs.h>
25 __KERNEL_RCSID(0, "$NetBSD: if_ral_cardbus.c,v 1.26 2022/09/25 17:33:19 thorpej Exp $");
26
27
28 #include <sys/param.h>
29 #include <sys/sockio.h>
30 #include <sys/mbuf.h>
31 #include <sys/kernel.h>
32 #include <sys/socket.h>
33 #include <sys/systm.h>
34 #include <sys/callout.h>
35 #include <sys/device.h>
36
37 #include <sys/bus.h>
38 #include <sys/intr.h>
39
40 #include <net/if.h>
41 #include <net/if_dl.h>
42 #include <net/if_media.h>
43 #include <net/if_ether.h>
44
45 #include <netinet/in.h>
46
47 #include <net80211/ieee80211_var.h>
48 #include <net80211/ieee80211_amrr.h>
49 #include <net80211/ieee80211_rssadapt.h>
50 #include <net80211/ieee80211_radiotap.h>
51
52 #include <dev/ic/rt2560var.h>
53 #include <dev/ic/rt2661var.h>
54
55 #include <dev/pci/pcireg.h>
56 #include <dev/pci/pcivar.h>
57 #include <dev/pci/pcidevs.h>
58
59 #include <dev/cardbus/cardbusvar.h>
60
61 static struct ral_opns {
62 int (*attach)(void *, int);
63 int (*detach)(void *);
64 int (*intr)(void *);
65
66 } ral_rt2560_opns = {
67 rt2560_attach,
68 rt2560_detach,
69 rt2560_intr
70
71 }, ral_rt2661_opns = {
72 rt2661_attach,
73 rt2661_detach,
74 rt2661_intr
75 };
76
77 struct ral_cardbus_softc {
78 union {
79 struct rt2560_softc sc_rt2560;
80 struct rt2661_softc sc_rt2661;
81 } u;
82 #define sc_sc u.sc_rt2560
83
84 /* cardbus specific goo */
85 struct ral_opns *sc_opns;
86 cardbus_devfunc_t sc_ct;
87 pcitag_t sc_tag;
88 void *sc_ih;
89 bus_size_t sc_mapsize;
90 pcireg_t sc_bar_val;
91 };
92
93 int ral_cardbus_match(device_t, cfdata_t, void *);
94 void ral_cardbus_attach(device_t, device_t, void *);
95 int ral_cardbus_detach(device_t, int);
96
97 CFATTACH_DECL_NEW(ral_cardbus, sizeof (struct ral_cardbus_softc),
98 ral_cardbus_match, ral_cardbus_attach, ral_cardbus_detach, NULL);
99
100 int ral_cardbus_enable(struct rt2560_softc *);
101 void ral_cardbus_disable(struct rt2560_softc *);
102 void ral_cardbus_power(struct rt2560_softc *, int);
103 void ral_cardbus_setup(struct ral_cardbus_softc *);
104
105 int
ral_cardbus_match(device_t parent,cfdata_t cfdata,void * aux)106 ral_cardbus_match(device_t parent, cfdata_t cfdata, void *aux)
107 {
108 struct cardbus_attach_args *ca = aux;
109
110 if (PCI_VENDOR(ca->ca_id) == PCI_VENDOR_RALINK) {
111 switch (PCI_PRODUCT(ca->ca_id)) {
112 case PCI_PRODUCT_RALINK_RT2560:
113 case PCI_PRODUCT_RALINK_RT2561:
114 case PCI_PRODUCT_RALINK_RT2561S:
115 case PCI_PRODUCT_RALINK_RT2661:
116 return 1;
117 default:
118 return 0;
119 }
120 }
121
122 return 0;
123 }
124
125 void
ral_cardbus_attach(device_t parent,device_t self,void * aux)126 ral_cardbus_attach(device_t parent, device_t self, void *aux)
127 {
128 struct ral_cardbus_softc *csc = device_private(self);
129 struct rt2560_softc *sc = &csc->sc_sc;
130 struct cardbus_attach_args *ca = aux;
131 cardbus_devfunc_t ct = ca->ca_ct;
132 char devinfo[256];
133 bus_addr_t base;
134 int error, revision;
135
136 pci_devinfo(ca->ca_id, ca->ca_class, 0, devinfo, sizeof(devinfo));
137 revision = PCI_REVISION(ca->ca_class);
138 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision);
139
140 csc->sc_opns =
141 (PCI_PRODUCT(ca->ca_id) == PCI_PRODUCT_RALINK_RT2560) ?
142 &ral_rt2560_opns : &ral_rt2661_opns;
143
144 sc->sc_dev = self;
145 sc->sc_dmat = ca->ca_dmat;
146 csc->sc_ct = ct;
147 csc->sc_tag = ca->ca_tag;
148
149 /* power management hooks */
150 sc->sc_enable = ral_cardbus_enable;
151 sc->sc_disable = ral_cardbus_disable;
152
153 /* map control/status registers */
154 error = Cardbus_mapreg_map(ct, PCI_BAR0,
155 PCI_MAPREG_TYPE_MEM, 0, &sc->sc_st, &sc->sc_sh, &base,
156 &csc->sc_mapsize);
157 if (error != 0) {
158 aprint_error(": could not map memory space\n");
159 return;
160 }
161
162 csc->sc_bar_val = base | PCI_MAPREG_TYPE_MEM;
163
164 /* set up the PCI configuration registers */
165 ral_cardbus_setup(csc);
166
167 (*csc->sc_opns->attach)(sc, PCI_PRODUCT(ca->ca_id));
168
169 Cardbus_function_disable(ct);
170 }
171
172 int
ral_cardbus_detach(device_t self,int flags)173 ral_cardbus_detach(device_t self, int flags)
174 {
175 struct ral_cardbus_softc *csc = device_private(self);
176 struct rt2560_softc *sc = &csc->sc_sc;
177 cardbus_devfunc_t ct = csc->sc_ct;
178 int error;
179
180 error = (*csc->sc_opns->detach)(sc);
181 if (error != 0)
182 return error;
183
184 /* unhook the interrupt handler */
185 if (csc->sc_ih != NULL) {
186 Cardbus_intr_disestablish(ct, csc->sc_ih);
187 csc->sc_ih = NULL;
188 }
189
190 /* release bus space and close window */
191 Cardbus_mapreg_unmap(ct, PCI_BAR0, sc->sc_st, sc->sc_sh,
192 csc->sc_mapsize);
193
194 return 0;
195 }
196
197 int
ral_cardbus_enable(struct rt2560_softc * sc)198 ral_cardbus_enable(struct rt2560_softc *sc)
199 {
200 struct ral_cardbus_softc *csc = (struct ral_cardbus_softc *)sc;
201 cardbus_devfunc_t ct = csc->sc_ct;
202
203 /* power on the socket */
204 Cardbus_function_enable(ct);
205
206 /* setup the PCI configuration registers */
207 ral_cardbus_setup(csc);
208
209 /* map and establish the interrupt handler */
210 csc->sc_ih = Cardbus_intr_establish(ct, IPL_NET,
211 csc->sc_opns->intr, sc);
212 if (csc->sc_ih == NULL) {
213 aprint_error_dev(sc->sc_dev,
214 "could not establish interrupt\n");
215 Cardbus_function_disable(ct);
216 return 1;
217 }
218
219 return 0;
220 }
221
222 void
ral_cardbus_disable(struct rt2560_softc * sc)223 ral_cardbus_disable(struct rt2560_softc *sc)
224 {
225 struct ral_cardbus_softc *csc = (struct ral_cardbus_softc *)sc;
226 cardbus_devfunc_t ct = csc->sc_ct;
227
228 /* unhook the interrupt handler */
229 Cardbus_intr_disestablish(ct, csc->sc_ih);
230 csc->sc_ih = NULL;
231
232 /* power down the socket */
233 Cardbus_function_disable(ct);
234 }
235
236 void
ral_cardbus_setup(struct ral_cardbus_softc * csc)237 ral_cardbus_setup(struct ral_cardbus_softc *csc)
238 {
239 cardbus_devfunc_t ct = csc->sc_ct;
240 pcireg_t reg;
241
242 /* program the BAR */
243 Cardbus_conf_write(ct, csc->sc_tag, PCI_BAR0, csc->sc_bar_val);
244
245 /* enable the appropriate bits in the PCI CSR */
246 reg = Cardbus_conf_read(ct, csc->sc_tag, PCI_COMMAND_STATUS_REG);
247 reg |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE;
248 Cardbus_conf_write(ct, csc->sc_tag, PCI_COMMAND_STATUS_REG, reg);
249 }
250