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 * $FreeBSD$
33 */
34
35 /*
36 * This is a PCI shim for the Aironet PC4500/4800 wireless network
37 * driver. Aironet makes PCMCIA, ISA and PCI versions of these devices,
38 * which all have basically the same interface. The ISA and PCI cards
39 * are actually bridge adapters with PCMCIA cards inserted into them,
40 * however they appear as normal PCI or ISA devices to the host.
41 *
42 * All we do here is handle the PCI probe and attach and set up an
43 * interrupt handler entry point. The PCI version of the card uses
44 * a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with
45 * multiple PCI address space mappings. The primary mapping at PCI
46 * register 0x14 is for the PLX chip itself, *NOT* the Aironet card.
47 * The I/O address of the Aironet is actually at register 0x18, which
48 * is the local bus mapping register for bus space 0. There are also
49 * registers for additional register spaces at registers 0x1C and
50 * 0x20, but these are unused in the Aironet devices. To find out
51 * more, you need a datasheet for the 9050 from PLX, but you have
52 * to go through their sales office to get it. Bleh.
53 */
54
55 #include "opt_inet.h"
56
57 #ifdef INET
58 #define ANCACHE
59 #endif
60
61 #include <sys/param.h>
62 #include <sys/systm.h>
63 #include <sys/sockio.h>
64 #include <sys/mbuf.h>
65 #include <sys/malloc.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 <machine/resource.h>
74
75 #include <net/if.h>
76 #include <net/if_arp.h>
77 #include <net/ethernet.h>
78 #include <net/if_dl.h>
79 #include <net/if_media.h>
80
81 #include <pci/pcireg.h>
82 #include <pci/pcivar.h>
83
84 #ifndef lint
85 static const char rcsid[] =
86 "$FreeBSD$";
87 #endif
88
89 #include <dev/an/if_aironet_ieee.h>
90 #include <dev/an/if_anreg.h>
91
92 struct an_type {
93 u_int16_t an_vid;
94 u_int16_t an_did;
95 char *an_name;
96 };
97
98 #define AIRONET_VENDORID 0x14B9
99 #define AIRONET_DEVICEID_35x 0x0350
100 #define AIRONET_DEVICEID_4500 0x4500
101 #define AIRONET_DEVICEID_4800 0x4800
102 #define AIRONET_DEVICEID_4xxx 0x0001
103 #define AIRONET_DEVICEID_MPI350 0xA504
104 #define AN_PCI_PLX_LOIO 0x14 /* PLX chip iobase */
105 #define AN_PCI_LOIO 0x18 /* Aironet iobase */
106
107 static struct an_type an_devs[] = {
108 { AIRONET_VENDORID, AIRONET_DEVICEID_35x, "Cisco Aironet 350 Series" },
109 { AIRONET_VENDORID, AIRONET_DEVICEID_4500, "Aironet PCI4500" },
110 { AIRONET_VENDORID, AIRONET_DEVICEID_4800, "Aironet PCI4800" },
111 { AIRONET_VENDORID, AIRONET_DEVICEID_4xxx, "Aironet PCI4500/PCI4800" },
112 { 0, 0, NULL }
113 };
114
115 static int an_probe_pci __P((device_t));
116 static int an_attach_pci __P((device_t));
117 static int an_detach_pci __P((device_t));
118 static int an_suspend_pci __P((device_t));
119 static int an_resume_pci __P((device_t));
120
121 static int
122 an_probe_pci(device_t dev)
123 {
124 struct an_type *t;
125
126 t = an_devs;
127
128 while (t->an_name != NULL) {
129 if (pci_get_vendor(dev) == t->an_vid &&
130 pci_get_device(dev) == t->an_did) {
131 device_set_desc(dev, t->an_name);
132 return(0);
133 }
134 t++;
135 }
136
137 if (pci_get_vendor(dev) == AIRONET_VENDORID &&
138 pci_get_device(dev) == AIRONET_DEVICEID_MPI350) {
139 device_set_desc(dev, "Cisco Aironet MPI350");
140 return(0);
141 }
142
143 return(ENXIO);
144 }
145
146 static int
147 an_attach_pci(dev)
148 device_t dev;
149 {
150 int s;
151 u_int32_t command;
152 struct an_softc *sc;
153 int unit, flags, error = 0;
154
155 s = splimp();
156
157 sc = device_get_softc(dev);
158 unit = device_get_unit(dev);
159 flags = device_get_flags(dev);
160 bzero(sc, sizeof(struct an_softc));
161
162 if (pci_get_vendor(dev) == AIRONET_VENDORID &&
163 pci_get_device(dev) == AIRONET_DEVICEID_MPI350) {
164 sc->mpi350 = 1;
165 sc->port_rid = PCIR_MAPS;
166 } else {
167 /*
168 * Map control/status registers.
169 */
170 command = pci_read_config(dev, PCIR_COMMAND, 4);
171 command |= PCIM_CMD_PORTEN;
172 pci_write_config(dev, PCIR_COMMAND, command, 4);
173 command = pci_read_config(dev, PCIR_COMMAND, 4);
174
175 if (!(command & PCIM_CMD_PORTEN)) {
176 printf("an%d: failed to enable I/O ports!\n", unit);
177 error = ENXIO;
178 goto fail;
179 }
180 sc->port_rid = AN_PCI_LOIO;
181 }
182 error = an_alloc_port(dev, sc->port_rid, 1);
183
184 if (error) {
185 printf("an%d: couldn't map ports\n", unit);
186 goto fail;
187 }
188
189 sc->an_btag = rman_get_bustag(sc->port_res);
190 sc->an_bhandle = rman_get_bushandle(sc->port_res);
191
192 /* Allocate memory for MPI350 */
193 if (sc->mpi350) {
194 /* Allocate memory */
195 sc->mem_rid = PCIR_MAPS + 4;
196 error = an_alloc_memory(dev, sc->mem_rid, 1);
197 if (error) {
198 printf("an%d: couldn't map memory\n", unit);
199 goto fail;
200 }
201 sc->an_mem_btag = rman_get_bustag(sc->mem_res);
202 sc->an_mem_bhandle = rman_get_bushandle(sc->mem_res);
203
204 /* Allocate aux. memory */
205 sc->mem_aux_rid = PCIR_MAPS + 8;
206 error = an_alloc_aux_memory(dev, sc->mem_aux_rid,
207 AN_AUX_MEM_SIZE);
208 if (error) {
209 printf("an%d: couldn't map aux memory\n", unit);
210 goto fail;
211 }
212 sc->an_mem_aux_btag = rman_get_bustag(sc->mem_aux_res);
213 sc->an_mem_aux_bhandle = rman_get_bushandle(sc->mem_aux_res);
214
215 /* Allocate DMA region */
216 error = bus_dma_tag_create(NULL, /* parent */
217 1, 0, /* alignment, bounds */
218 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
219 BUS_SPACE_MAXADDR, /* highaddr */
220 NULL, NULL, /* filter, filterarg */
221 0x3ffff, /* maxsize XXX */
222 1, /* nsegments */
223 0xffff, /* maxsegsize XXX */
224 BUS_DMA_ALLOCNOW, /* flags */
225 &sc->an_dtag);
226 if (error) {
227 printf("an%d: couldn't get DMA region\n", unit);
228 goto fail;
229 }
230 }
231
232 /* Allocate interrupt */
233 error = an_alloc_irq(dev, 0, RF_SHAREABLE);
234 if (error) {
235 goto fail;
236 }
237
238 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET,
239 an_intr, sc, &sc->irq_handle);
240 if (error) {
241 goto fail;
242 }
243
244 sc->an_dev = dev;
245 error = an_attach(sc, device_get_unit(dev), flags);
246
247 fail:
248 if (error)
249 an_release_resources(dev);
250 splx(s);
251
252 return(error);
253 }
254
255 static int
256 an_detach_pci(device_t dev)
257 {
258 struct an_softc *sc = device_get_softc(dev);
259 struct ifnet *ifp = &sc->arpcom.ac_if;
260
261 an_stop(sc);
262 ifmedia_removeall(&sc->an_ifmedia);
263 ether_ifdetach(ifp, ETHER_BPF_SUPPORTED);
264 bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
265 an_release_resources(dev);
266
267 return (0);
268 }
269
270 static int
271 an_suspend_pci(device_t dev)
272 {
273 an_shutdown(dev);
274
275 return (0);
276 }
277
278 static int
279 an_resume_pci(device_t dev)
280 {
281 an_resume(dev);
282
283 return (0);
284 }
285
286 static device_method_t an_pci_methods[] = {
287 /* Device interface */
288 DEVMETHOD(device_probe, an_probe_pci),
289 DEVMETHOD(device_attach, an_attach_pci),
290 DEVMETHOD(device_detach, an_detach_pci),
291 DEVMETHOD(device_shutdown, an_shutdown),
292 DEVMETHOD(device_suspend, an_suspend_pci),
293 DEVMETHOD(device_resume, an_resume_pci),
294 { 0, 0 }
295 };
296
297 static driver_t an_pci_driver = {
298 "an",
299 an_pci_methods,
300 sizeof(struct an_softc),
301 };
302
303 static devclass_t an_devclass;
304
305 DRIVER_MODULE(if_an, pci, an_pci_driver, an_devclass, 0, 0);
Cache object: 043b16a053f4113da204f09412e13a56
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