FreeBSD/Linux Kernel Cross Reference
sys/dev/an/if_an_pci.c
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 /*
34 * This is a PCI shim for the Aironet PC4500/4800 wireless network
35 * driver. Aironet makes PCMCIA, ISA and PCI versions of these devices,
36 * which all have basically the same interface. The ISA and PCI cards
37 * are actually bridge adapters with PCMCIA cards inserted into them,
38 * however they appear as normal PCI or ISA devices to the host.
39 *
40 * All we do here is handle the PCI probe and attach and set up an
41 * interrupt handler entry point. The PCI version of the card uses
42 * a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with
43 * multiple PCI address space mappings. The primary mapping at PCI
44 * register 0x14 is for the PLX chip itself, *NOT* the Aironet card.
45 * The I/O address of the Aironet is actually at register 0x18, which
46 * is the local bus mapping register for bus space 0. There are also
47 * registers for additional register spaces at registers 0x1C and
48 * 0x20, but these are unused in the Aironet devices. To find out
49 * more, you need a datasheet for the 9050 from PLX, but you have
50 * to go through their sales office to get it. Bleh.
51 */
52
53 #include <sys/cdefs.h>
54 __FBSDID("$FreeBSD: releng/5.1/sys/dev/an/if_an_pci.c 113506 2003-04-15 06:37:30Z mdodd $");
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 <pci/pcireg.h>
84 #include <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_4500, "Aironet PCI4500" },
107 { AIRONET_VENDORID, AIRONET_DEVICEID_4800, "Aironet PCI4800" },
108 { AIRONET_VENDORID, AIRONET_DEVICEID_4xxx, "Aironet PCI4500/PCI4800" },
109 { 0, 0, NULL }
110 };
111
112 static int an_probe_pci (device_t);
113 static int an_attach_pci (device_t);
114 static int an_detach_pci (device_t);
115 static int an_suspend_pci (device_t);
116 static int an_resume_pci (device_t);
117
118 static int
119 an_probe_pci(device_t dev)
120 {
121 struct an_type *t;
122
123 t = an_devs;
124
125 while (t->an_name != NULL) {
126 if (pci_get_vendor(dev) == t->an_vid &&
127 pci_get_device(dev) == t->an_did) {
128 device_set_desc(dev, t->an_name);
129 return(0);
130 }
131 t++;
132 }
133
134 if (pci_get_vendor(dev) == AIRONET_VENDORID &&
135 pci_get_device(dev) == AIRONET_DEVICEID_MPI350) {
136 device_set_desc(dev, "Cisco Aironet MPI350");
137 return(0);
138 }
139
140 return(ENXIO);
141 }
142
143 static int
144 an_attach_pci(dev)
145 device_t dev;
146 {
147 u_int32_t command;
148 struct an_softc *sc;
149 int unit, flags, error = 0;
150
151 sc = device_get_softc(dev);
152 unit = device_get_unit(dev);
153 flags = device_get_flags(dev);
154 bzero(sc, sizeof(struct an_softc));
155
156 if (pci_get_vendor(dev) == AIRONET_VENDORID &&
157 pci_get_device(dev) == AIRONET_DEVICEID_MPI350) {
158 sc->mpi350 = 1;
159 sc->port_rid = PCIR_MAPS;
160 } else {
161 /*
162 * Map control/status registers.
163 */
164 command = pci_read_config(dev, PCIR_COMMAND, 4);
165 command |= PCIM_CMD_PORTEN;
166 pci_write_config(dev, PCIR_COMMAND, command, 4);
167 command = pci_read_config(dev, PCIR_COMMAND, 4);
168
169 if (!(command & PCIM_CMD_PORTEN)) {
170 printf("an%d: failed to enable I/O ports!\n", unit);
171 error = ENXIO;
172 goto fail;
173 }
174 sc->port_rid = AN_PCI_LOIO;
175 }
176 error = an_alloc_port(dev, sc->port_rid, 1);
177
178 if (error) {
179 printf("an%d: couldn't map ports\n", unit);
180 goto fail;
181 }
182
183 sc->an_btag = rman_get_bustag(sc->port_res);
184 sc->an_bhandle = rman_get_bushandle(sc->port_res);
185
186 /* Allocate memory for MPI350 */
187 if (sc->mpi350) {
188 /* Allocate memory */
189 sc->mem_rid = PCIR_MAPS + 4;
190 error = an_alloc_memory(dev, sc->mem_rid, 1);
191 if (error) {
192 printf("an%d: couldn't map memory\n", unit);
193 goto fail;
194 }
195 sc->an_mem_btag = rman_get_bustag(sc->mem_res);
196 sc->an_mem_bhandle = rman_get_bushandle(sc->mem_res);
197
198 /* Allocate aux. memory */
199 sc->mem_aux_rid = PCIR_MAPS + 8;
200 error = an_alloc_aux_memory(dev, sc->mem_aux_rid,
201 AN_AUXMEMSIZE);
202 if (error) {
203 printf("an%d: couldn't map aux memory\n", unit);
204 goto fail;
205 }
206 sc->an_mem_aux_btag = rman_get_bustag(sc->mem_aux_res);
207 sc->an_mem_aux_bhandle = rman_get_bushandle(sc->mem_aux_res);
208
209 /* Allocate DMA region */
210 error = bus_dma_tag_create(NULL, /* parent */
211 1, 0, /* alignment, bounds */
212 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
213 BUS_SPACE_MAXADDR, /* highaddr */
214 NULL, NULL, /* filter, filterarg */
215 0x3ffff, /* maxsize XXX */
216 1, /* nsegments */
217 0xffff, /* maxsegsize XXX */
218 BUS_DMA_ALLOCNOW, /* flags */
219 &sc->an_dtag);
220 if (error) {
221 printf("an%d: couldn't get DMA region\n", unit);
222 goto fail;
223 }
224 }
225
226 /* Allocate interrupt */
227 error = an_alloc_irq(dev, 0, RF_SHAREABLE);
228 if (error) {
229 goto fail;
230 }
231
232 sc->an_dev = dev;
233 error = an_attach(sc, device_get_unit(dev), flags);
234 if (error) {
235 goto fail;
236 }
237
238 /*
239 * Must setup the interrupt after the an_attach to prevent racing.
240 */
241 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET,
242 an_intr, sc, &sc->irq_handle);
243
244 fail:
245 if (error)
246 an_release_resources(dev);
247 return(error);
248 }
249
250 static int
251 an_detach_pci(device_t dev)
252 {
253 struct an_softc *sc = device_get_softc(dev);
254 struct ifnet *ifp = &sc->arpcom.ac_if;
255
256 an_stop(sc);
257 ifmedia_removeall(&sc->an_ifmedia);
258 ether_ifdetach(ifp);
259 bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
260 an_release_resources(dev);
261
262 return (0);
263 }
264
265 static int
266 an_suspend_pci(device_t dev)
267 {
268 an_shutdown(dev);
269
270 return (0);
271 }
272
273 static int
274 an_resume_pci(device_t dev)
275 {
276 an_resume(dev);
277
278 return (0);
279 }
280
281 static device_method_t an_pci_methods[] = {
282 /* Device interface */
283 DEVMETHOD(device_probe, an_probe_pci),
284 DEVMETHOD(device_attach, an_attach_pci),
285 DEVMETHOD(device_detach, an_detach_pci),
286 DEVMETHOD(device_shutdown, an_shutdown),
287 DEVMETHOD(device_suspend, an_suspend_pci),
288 DEVMETHOD(device_resume, an_resume_pci),
289 { 0, 0 }
290 };
291
292 static driver_t an_pci_driver = {
293 "an",
294 an_pci_methods,
295 sizeof(struct an_softc),
296 };
297
298 static devclass_t an_devclass;
299
300 DRIVER_MODULE(an, pci, an_pci_driver, an_devclass, 0, 0);
301 MODULE_DEPEND(an, pci, 1, 1, 1);
302 MODULE_DEPEND(an, wlan, 1, 1, 1);
Cache object: d002cc3ebc69703543a4d63f273e9b8d
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