1 /*-
2 * Copyright (c) 1997, 1998, 1999
3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35
36 /*
37 * This is a PCI shim for the Aironet PC4500/4800 wireless network
38 * driver. Aironet makes PCMCIA, ISA and PCI versions of these devices,
39 * which all have basically the same interface. The ISA and PCI cards
40 * are actually bridge adapters with PCMCIA cards inserted into them,
41 * however they appear as normal PCI or ISA devices to the host.
42 *
43 * All we do here is handle the PCI probe and attach and set up an
44 * interrupt handler entry point. The PCI version of the card uses
45 * a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with
46 * multiple PCI address space mappings. The primary mapping at PCI
47 * register 0x14 is for the PLX chip itself, *NOT* the Aironet card.
48 * The I/O address of the Aironet is actually at register 0x18, which
49 * is the local bus mapping register for bus space 0. There are also
50 * registers for additional register spaces at registers 0x1C and
51 * 0x20, but these are unused in the Aironet devices. To find out
52 * more, you need a datasheet for the 9050 from PLX, but you have
53 * to go through their sales office to get it. Bleh.
54 */
55
56 #include "opt_inet.h"
57
58 #ifdef INET
59 #define ANCACHE
60 #endif
61
62 #include <sys/param.h>
63 #include <sys/systm.h>
64 #include <sys/sockio.h>
65 #include <sys/mbuf.h>
66 #include <sys/kernel.h>
67 #include <sys/socket.h>
68
69 #include <sys/module.h>
70 #include <sys/bus.h>
71 #include <machine/bus.h>
72 #include <sys/rman.h>
73 #include <sys/lock.h>
74 #include <sys/mutex.h>
75 #include <machine/resource.h>
76
77 #include <net/if.h>
78 #include <net/if_arp.h>
79 #include <net/ethernet.h>
80 #include <net/if_dl.h>
81 #include <net/if_media.h>
82
83 #include <dev/pci/pcireg.h>
84 #include <dev/pci/pcivar.h>
85
86 #include <dev/an/if_aironet_ieee.h>
87 #include <dev/an/if_anreg.h>
88
89 struct an_type {
90 u_int16_t an_vid;
91 u_int16_t an_did;
92 char *an_name;
93 };
94
95 #define AIRONET_VENDORID 0x14B9
96 #define AIRONET_DEVICEID_35x 0x0350
97 #define AIRONET_DEVICEID_4500 0x4500
98 #define AIRONET_DEVICEID_4800 0x4800
99 #define AIRONET_DEVICEID_4xxx 0x0001
100 #define AIRONET_DEVICEID_MPI350 0xA504
101 #define AN_PCI_PLX_LOIO 0x14 /* PLX chip iobase */
102 #define AN_PCI_LOIO 0x18 /* Aironet iobase */
103
104 static struct an_type an_devs[] = {
105 { AIRONET_VENDORID, AIRONET_DEVICEID_35x, "Cisco Aironet 350 Series" },
106 { AIRONET_VENDORID, AIRONET_DEVICEID_MPI350, "Cisco Aironet MPI350" },
107 { AIRONET_VENDORID, AIRONET_DEVICEID_4500, "Aironet PCI4500" },
108 { AIRONET_VENDORID, AIRONET_DEVICEID_4800, "Aironet PCI4800" },
109 { AIRONET_VENDORID, AIRONET_DEVICEID_4xxx, "Aironet PCI4500/PCI4800" },
110 { 0, 0, NULL }
111 };
112
113 static int an_probe_pci (device_t);
114 static int an_attach_pci (device_t);
115 static int an_suspend_pci (device_t);
116 static int an_resume_pci (device_t);
117
118 static int
an_probe_pci(device_t dev)119 an_probe_pci(device_t dev)
120 {
121 struct an_type *t;
122 struct an_softc *sc = device_get_softc(dev);
123
124 bzero(sc, sizeof(struct an_softc));
125 t = an_devs;
126
127 while (t->an_name != NULL) {
128 if (pci_get_vendor(dev) == t->an_vid &&
129 pci_get_device(dev) == t->an_did) {
130 device_set_desc(dev, t->an_name);
131 an_pci_probe(dev);
132 return(BUS_PROBE_DEFAULT);
133 }
134 t++;
135 }
136
137 return(ENXIO);
138 }
139
140 static int
an_attach_pci(dev)141 an_attach_pci(dev)
142 device_t dev;
143 {
144 struct an_softc *sc;
145 int flags, error = 0;
146
147 sc = device_get_softc(dev);
148 flags = device_get_flags(dev);
149
150 if (pci_get_vendor(dev) == AIRONET_VENDORID &&
151 pci_get_device(dev) == AIRONET_DEVICEID_MPI350) {
152 sc->mpi350 = 1;
153 sc->port_rid = PCIR_BAR(0);
154 } else {
155 sc->port_rid = AN_PCI_LOIO;
156 }
157 error = an_alloc_port(dev, sc->port_rid, 1);
158
159 if (error) {
160 device_printf(dev, "couldn't map ports\n");
161 goto fail;
162 }
163
164 /* Allocate memory for MPI350 */
165 if (sc->mpi350) {
166 /* Allocate memory */
167 sc->mem_rid = PCIR_BAR(1);
168 error = an_alloc_memory(dev, sc->mem_rid, 1);
169 if (error) {
170 device_printf(dev, "couldn't map memory\n");
171 goto fail;
172 }
173
174 /* Allocate aux. memory */
175 sc->mem_aux_rid = PCIR_BAR(2);
176 error = an_alloc_aux_memory(dev, sc->mem_aux_rid,
177 AN_AUX_MEM_SIZE);
178 if (error) {
179 device_printf(dev, "couldn't map aux memory\n");
180 goto fail;
181 }
182
183 /* Allocate DMA region */
184 error = bus_dma_tag_create(bus_get_dma_tag(dev),/* parent */
185 1, 0, /* alignment, bounds */
186 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
187 BUS_SPACE_MAXADDR, /* highaddr */
188 NULL, NULL, /* filter, filterarg */
189 0x3ffff, /* maxsize XXX */
190 1, /* nsegments */
191 0xffff, /* maxsegsize XXX */
192 BUS_DMA_ALLOCNOW, /* flags */
193 NULL, /* lockfunc */
194 NULL, /* lockarg */
195 &sc->an_dtag);
196 if (error) {
197 device_printf(dev, "couldn't get DMA region\n");
198 goto fail;
199 }
200 }
201
202 /* Allocate interrupt */
203 error = an_alloc_irq(dev, 0, RF_SHAREABLE);
204 if (error) {
205 device_printf(dev, "couldn't get interrupt\n");
206 goto fail;
207 }
208
209 sc->an_dev = dev;
210 error = an_attach(sc, flags);
211 if (error) {
212 device_printf(dev, "couldn't attach\n");
213 goto fail;
214 }
215
216 /*
217 * Must setup the interrupt after the an_attach to prevent racing.
218 */
219 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET,
220 NULL, an_intr, sc, &sc->irq_handle);
221 if (error)
222 device_printf(dev, "couldn't setup interrupt\n");
223
224 fail:
225 if (error)
226 an_release_resources(dev);
227 return(error);
228 }
229
230 static int
an_suspend_pci(device_t dev)231 an_suspend_pci(device_t dev)
232 {
233 an_shutdown(dev);
234
235 return (0);
236 }
237
238 static int
an_resume_pci(device_t dev)239 an_resume_pci(device_t dev)
240 {
241 an_resume(dev);
242
243 return (0);
244 }
245
246 static device_method_t an_pci_methods[] = {
247 /* Device interface */
248 DEVMETHOD(device_probe, an_probe_pci),
249 DEVMETHOD(device_attach, an_attach_pci),
250 DEVMETHOD(device_detach, an_detach),
251 DEVMETHOD(device_shutdown, an_shutdown),
252 DEVMETHOD(device_suspend, an_suspend_pci),
253 DEVMETHOD(device_resume, an_resume_pci),
254 { 0, 0 }
255 };
256
257 static driver_t an_pci_driver = {
258 "an",
259 an_pci_methods,
260 sizeof(struct an_softc),
261 };
262
263 static devclass_t an_devclass;
264
265 DRIVER_MODULE(an, pci, an_pci_driver, an_devclass, 0, 0);
266 MODULE_DEPEND(an, pci, 1, 1, 1);
267 MODULE_DEPEND(an, wlan, 1, 1, 1);
268