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 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD: releng/6.4/sys/dev/an/if_an_pci.c 143163 2005-03-05 19:06:12Z imp $");
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_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_suspend_pci (device_t);
115 static int an_resume_pci (device_t);
116
117 static int
118 an_probe_pci(device_t dev)
119 {
120 struct an_type *t;
121
122 t = an_devs;
123
124 while (t->an_name != NULL) {
125 if (pci_get_vendor(dev) == t->an_vid &&
126 pci_get_device(dev) == t->an_did) {
127 device_set_desc(dev, t->an_name);
128 return(BUS_PROBE_DEFAULT);
129 }
130 t++;
131 }
132
133 if (pci_get_vendor(dev) == AIRONET_VENDORID &&
134 pci_get_device(dev) == AIRONET_DEVICEID_MPI350) {
135 device_set_desc(dev, "Cisco Aironet MPI350");
136 return(BUS_PROBE_DEFAULT);
137 }
138
139 return(ENXIO);
140 }
141
142 static int
143 an_attach_pci(dev)
144 device_t dev;
145 {
146 u_int32_t command;
147 struct an_softc *sc;
148 int unit, flags, error = 0;
149
150 sc = device_get_softc(dev);
151 unit = device_get_unit(dev);
152 flags = device_get_flags(dev);
153 bzero(sc, sizeof(struct an_softc));
154
155 if (pci_get_vendor(dev) == AIRONET_VENDORID &&
156 pci_get_device(dev) == AIRONET_DEVICEID_MPI350) {
157 sc->mpi350 = 1;
158 sc->port_rid = PCIR_BAR(0);
159 } else {
160 /*
161 * Map control/status registers.
162 */
163 command = pci_read_config(dev, PCIR_COMMAND, 4);
164 command |= PCIM_CMD_PORTEN;
165 pci_write_config(dev, PCIR_COMMAND, command, 4);
166 command = pci_read_config(dev, PCIR_COMMAND, 4);
167
168 if (!(command & PCIM_CMD_PORTEN)) {
169 printf("an%d: failed to enable I/O ports!\n", unit);
170 error = ENXIO;
171 goto fail;
172 }
173 sc->port_rid = AN_PCI_LOIO;
174 }
175 error = an_alloc_port(dev, sc->port_rid, 1);
176
177 if (error) {
178 printf("an%d: couldn't map ports\n", unit);
179 goto fail;
180 }
181
182 sc->an_btag = rman_get_bustag(sc->port_res);
183 sc->an_bhandle = rman_get_bushandle(sc->port_res);
184
185 /* Allocate memory for MPI350 */
186 if (sc->mpi350) {
187 /* Allocate memory */
188 sc->mem_rid = PCIR_BAR(1);
189 error = an_alloc_memory(dev, sc->mem_rid, 1);
190 if (error) {
191 printf("an%d: couldn't map memory\n", unit);
192 goto fail;
193 }
194 sc->an_mem_btag = rman_get_bustag(sc->mem_res);
195 sc->an_mem_bhandle = rman_get_bushandle(sc->mem_res);
196
197 /* Allocate aux. memory */
198 sc->mem_aux_rid = PCIR_BAR(2);
199 error = an_alloc_aux_memory(dev, sc->mem_aux_rid,
200 AN_AUX_MEM_SIZE);
201 if (error) {
202 printf("an%d: couldn't map aux memory\n", unit);
203 goto fail;
204 }
205 sc->an_mem_aux_btag = rman_get_bustag(sc->mem_aux_res);
206 sc->an_mem_aux_bhandle = rman_get_bushandle(sc->mem_aux_res);
207
208 /* Allocate DMA region */
209 error = bus_dma_tag_create(NULL, /* parent */
210 1, 0, /* alignment, bounds */
211 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
212 BUS_SPACE_MAXADDR, /* highaddr */
213 NULL, NULL, /* filter, filterarg */
214 0x3ffff, /* maxsize XXX */
215 1, /* nsegments */
216 0xffff, /* maxsegsize XXX */
217 BUS_DMA_ALLOCNOW, /* flags */
218 NULL, /* lockfunc */
219 NULL, /* lockarg */
220 &sc->an_dtag);
221 if (error) {
222 printf("an%d: couldn't get DMA region\n", unit);
223 goto fail;
224 }
225 }
226
227 /* Allocate interrupt */
228 error = an_alloc_irq(dev, 0, RF_SHAREABLE);
229 if (error) {
230 goto fail;
231 }
232
233 sc->an_dev = dev;
234 error = an_attach(sc, device_get_unit(dev), flags);
235 if (error) {
236 goto fail;
237 }
238
239 /*
240 * Must setup the interrupt after the an_attach to prevent racing.
241 */
242 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET,
243 an_intr, sc, &sc->irq_handle);
244
245 fail:
246 if (error)
247 an_release_resources(dev);
248 return(error);
249 }
250
251 static int
252 an_suspend_pci(device_t dev)
253 {
254 an_shutdown(dev);
255
256 return (0);
257 }
258
259 static int
260 an_resume_pci(device_t dev)
261 {
262 an_resume(dev);
263
264 return (0);
265 }
266
267 static device_method_t an_pci_methods[] = {
268 /* Device interface */
269 DEVMETHOD(device_probe, an_probe_pci),
270 DEVMETHOD(device_attach, an_attach_pci),
271 DEVMETHOD(device_detach, an_detach),
272 DEVMETHOD(device_shutdown, an_shutdown),
273 DEVMETHOD(device_suspend, an_suspend_pci),
274 DEVMETHOD(device_resume, an_resume_pci),
275 { 0, 0 }
276 };
277
278 static driver_t an_pci_driver = {
279 "an",
280 an_pci_methods,
281 sizeof(struct an_softc),
282 };
283
284 static devclass_t an_devclass;
285
286 DRIVER_MODULE(an, pci, an_pci_driver, an_devclass, 0, 0);
287 MODULE_DEPEND(an, pci, 1, 1, 1);
288 MODULE_DEPEND(an, wlan, 1, 1, 1);
Cache object: 90ffc29d2cc91a675c734763e12ea685
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