1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1997, 1998, 1999
5 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Bill Paul.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37
38 /*
39 * This is a PCI shim for the Aironet PC4500/4800 wireless network
40 * driver. Aironet makes PCMCIA, ISA and PCI versions of these devices,
41 * which all have basically the same interface. The ISA and PCI cards
42 * are actually bridge adapters with PCMCIA cards inserted into them,
43 * however they appear as normal PCI or ISA devices to the host.
44 *
45 * All we do here is handle the PCI probe and attach and set up an
46 * interrupt handler entry point. The PCI version of the card uses
47 * a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with
48 * multiple PCI address space mappings. The primary mapping at PCI
49 * register 0x14 is for the PLX chip itself, *NOT* the Aironet card.
50 * The I/O address of the Aironet is actually at register 0x18, which
51 * is the local bus mapping register for bus space 0. There are also
52 * registers for additional register spaces at registers 0x1C and
53 * 0x20, but these are unused in the Aironet devices. To find out
54 * more, you need a datasheet for the 9050 from PLX, but you have
55 * to go through their sales office to get it. Bleh.
56 */
57
58 #include "opt_inet.h"
59
60 #ifdef INET
61 #define ANCACHE
62 #endif
63
64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/sockio.h>
67 #include <sys/mbuf.h>
68 #include <sys/kernel.h>
69 #include <sys/socket.h>
70
71 #include <sys/module.h>
72 #include <sys/bus.h>
73 #include <machine/bus.h>
74 #include <sys/rman.h>
75 #include <sys/lock.h>
76 #include <sys/mutex.h>
77 #include <machine/resource.h>
78
79 #include <net/if.h>
80 #include <net/if_arp.h>
81 #include <net/ethernet.h>
82 #include <net/if_dl.h>
83 #include <net/if_media.h>
84
85 #include <dev/pci/pcireg.h>
86 #include <dev/pci/pcivar.h>
87
88 #include <dev/an/if_aironet_ieee.h>
89 #include <dev/an/if_anreg.h>
90
91 struct an_type {
92 u_int16_t an_vid;
93 u_int16_t an_did;
94 char *an_name;
95 };
96
97 #define AIRONET_VENDORID 0x14B9
98 #define AIRONET_DEVICEID_35x 0x0350
99 #define AIRONET_DEVICEID_4500 0x4500
100 #define AIRONET_DEVICEID_4800 0x4800
101 #define AIRONET_DEVICEID_4xxx 0x0001
102 #define AIRONET_DEVICEID_MPI350 0xA504
103 #define AN_PCI_PLX_LOIO 0x14 /* PLX chip iobase */
104 #define AN_PCI_LOIO 0x18 /* Aironet iobase */
105
106 static struct an_type an_devs[] = {
107 { AIRONET_VENDORID, AIRONET_DEVICEID_35x, "Cisco Aironet 350 Series" },
108 { AIRONET_VENDORID, AIRONET_DEVICEID_MPI350, "Cisco Aironet MPI350" },
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 (device_t);
116 static int an_attach_pci (device_t);
117 static int an_suspend_pci (device_t);
118 static int an_resume_pci (device_t);
119
120 static int
an_probe_pci(device_t dev)121 an_probe_pci(device_t dev)
122 {
123 struct an_type *t;
124 uint16_t vid, did;
125
126 t = an_devs;
127 vid = pci_get_vendor(dev);
128 did = pci_get_device(dev);
129
130 while (t->an_name != NULL) {
131 if (vid == t->an_vid &&
132 did == t->an_did) {
133 device_set_desc(dev, t->an_name);
134 return(BUS_PROBE_DEFAULT);
135 }
136 t++;
137 }
138
139 return(ENXIO);
140 }
141
142 static int
an_attach_pci(dev)143 an_attach_pci(dev)
144 device_t dev;
145 {
146 struct an_softc *sc;
147 int flags, error = 0;
148
149 sc = device_get_softc(dev);
150 bzero(sc, sizeof(struct an_softc));
151 flags = device_get_flags(dev);
152
153 /*
154 * Setup the lock in PCI attachment since it skips the an_probe
155 * function.
156 */
157 mtx_init(&sc->an_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
158 MTX_DEF);
159
160 if (pci_get_vendor(dev) == AIRONET_VENDORID &&
161 pci_get_device(dev) == AIRONET_DEVICEID_MPI350) {
162 sc->mpi350 = 1;
163 sc->port_rid = PCIR_BAR(0);
164 } else {
165 sc->port_rid = AN_PCI_LOIO;
166 }
167 error = an_alloc_port(dev, sc->port_rid, 1);
168
169 if (error) {
170 device_printf(dev, "couldn't map ports\n");
171 goto fail;
172 }
173
174 /* Allocate memory for MPI350 */
175 if (sc->mpi350) {
176 /* Allocate memory */
177 sc->mem_rid = PCIR_BAR(1);
178 error = an_alloc_memory(dev, sc->mem_rid, 1);
179 if (error) {
180 device_printf(dev, "couldn't map memory\n");
181 goto fail;
182 }
183
184 /* Allocate aux. memory */
185 sc->mem_aux_rid = PCIR_BAR(2);
186 error = an_alloc_aux_memory(dev, sc->mem_aux_rid,
187 AN_AUX_MEM_SIZE);
188 if (error) {
189 device_printf(dev, "couldn't map aux memory\n");
190 goto fail;
191 }
192
193 /* Allocate DMA region */
194 error = bus_dma_tag_create(bus_get_dma_tag(dev),/* parent */
195 1, 0, /* alignment, bounds */
196 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
197 BUS_SPACE_MAXADDR, /* highaddr */
198 NULL, NULL, /* filter, filterarg */
199 0x3ffff, /* maxsize XXX */
200 1, /* nsegments */
201 0xffff, /* maxsegsize XXX */
202 BUS_DMA_ALLOCNOW, /* flags */
203 NULL, /* lockfunc */
204 NULL, /* lockarg */
205 &sc->an_dtag);
206 if (error) {
207 device_printf(dev, "couldn't get DMA region\n");
208 goto fail;
209 }
210 }
211
212 /* Allocate interrupt */
213 error = an_alloc_irq(dev, 0, RF_SHAREABLE);
214 if (error) {
215 device_printf(dev, "couldn't get interrupt\n");
216 goto fail;
217 }
218
219 sc->an_dev = dev;
220 error = an_attach(sc, flags);
221 if (error) {
222 device_printf(dev, "couldn't attach\n");
223 goto fail;
224 }
225
226 /*
227 * Must setup the interrupt after the an_attach to prevent racing.
228 */
229 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET,
230 NULL, an_intr, sc, &sc->irq_handle);
231 if (error)
232 device_printf(dev, "couldn't setup interrupt\n");
233
234 fail:
235 if (error)
236 an_release_resources(dev);
237 return(error);
238 }
239
240 static int
an_suspend_pci(device_t dev)241 an_suspend_pci(device_t dev)
242 {
243 an_shutdown(dev);
244
245 return (0);
246 }
247
248 static int
an_resume_pci(device_t dev)249 an_resume_pci(device_t dev)
250 {
251 an_resume(dev);
252
253 return (0);
254 }
255
256 static device_method_t an_pci_methods[] = {
257 /* Device interface */
258 DEVMETHOD(device_probe, an_probe_pci),
259 DEVMETHOD(device_attach, an_attach_pci),
260 DEVMETHOD(device_detach, an_detach),
261 DEVMETHOD(device_shutdown, an_shutdown),
262 DEVMETHOD(device_suspend, an_suspend_pci),
263 DEVMETHOD(device_resume, an_resume_pci),
264 { 0, 0 }
265 };
266
267 static driver_t an_pci_driver = {
268 "an",
269 an_pci_methods,
270 sizeof(struct an_softc),
271 };
272
273 DRIVER_MODULE(an, pci, an_pci_driver, 0, 0);
274 MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, an,
275 an_devs, nitems(an_devs) - 1);
276 MODULE_DEPEND(an, pci, 1, 1, 1);
277 MODULE_DEPEND(an, wlan, 1, 1, 1);
278