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 /*
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 uint16_t vid, did;
123
124 t = an_devs;
125 vid = pci_get_vendor(dev);
126 did = pci_get_device(dev);
127
128 while (t->an_name != NULL) {
129 if (vid == t->an_vid &&
130 did == t->an_did) {
131 device_set_desc(dev, t->an_name);
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 bzero(sc, sizeof(struct an_softc));
149 flags = device_get_flags(dev);
150
151 /*
152 * Setup the lock in PCI attachment since it skips the an_probe
153 * function.
154 */
155 mtx_init(&sc->an_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
156 MTX_DEF);
157
158 if (pci_get_vendor(dev) == AIRONET_VENDORID &&
159 pci_get_device(dev) == AIRONET_DEVICEID_MPI350) {
160 sc->mpi350 = 1;
161 sc->port_rid = PCIR_BAR(0);
162 } else {
163 sc->port_rid = AN_PCI_LOIO;
164 }
165 error = an_alloc_port(dev, sc->port_rid, 1);
166
167 if (error) {
168 device_printf(dev, "couldn't map ports\n");
169 goto fail;
170 }
171
172 /* Allocate memory for MPI350 */
173 if (sc->mpi350) {
174 /* Allocate memory */
175 sc->mem_rid = PCIR_BAR(1);
176 error = an_alloc_memory(dev, sc->mem_rid, 1);
177 if (error) {
178 device_printf(dev, "couldn't map memory\n");
179 goto fail;
180 }
181
182 /* Allocate aux. memory */
183 sc->mem_aux_rid = PCIR_BAR(2);
184 error = an_alloc_aux_memory(dev, sc->mem_aux_rid,
185 AN_AUX_MEM_SIZE);
186 if (error) {
187 device_printf(dev, "couldn't map aux memory\n");
188 goto fail;
189 }
190
191 /* Allocate DMA region */
192 error = bus_dma_tag_create(bus_get_dma_tag(dev),/* parent */
193 1, 0, /* alignment, bounds */
194 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
195 BUS_SPACE_MAXADDR, /* highaddr */
196 NULL, NULL, /* filter, filterarg */
197 0x3ffff, /* maxsize XXX */
198 1, /* nsegments */
199 0xffff, /* maxsegsize XXX */
200 BUS_DMA_ALLOCNOW, /* flags */
201 NULL, /* lockfunc */
202 NULL, /* lockarg */
203 &sc->an_dtag);
204 if (error) {
205 device_printf(dev, "couldn't get DMA region\n");
206 goto fail;
207 }
208 }
209
210 /* Allocate interrupt */
211 error = an_alloc_irq(dev, 0, RF_SHAREABLE);
212 if (error) {
213 device_printf(dev, "couldn't get interrupt\n");
214 goto fail;
215 }
216
217 sc->an_dev = dev;
218 error = an_attach(sc, flags);
219 if (error) {
220 device_printf(dev, "couldn't attach\n");
221 goto fail;
222 }
223
224 /*
225 * Must setup the interrupt after the an_attach to prevent racing.
226 */
227 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET,
228 NULL, an_intr, sc, &sc->irq_handle);
229 if (error)
230 device_printf(dev, "couldn't setup interrupt\n");
231 else
232 gone_in_dev(dev, 13, "pccard removed, an doesn't support modern crypto");
233 fail:
234 if (error)
235 an_release_resources(dev);
236 return(error);
237 }
238
239 static int
an_suspend_pci(device_t dev)240 an_suspend_pci(device_t dev)
241 {
242 an_shutdown(dev);
243
244 return (0);
245 }
246
247 static int
an_resume_pci(device_t dev)248 an_resume_pci(device_t dev)
249 {
250 an_resume(dev);
251
252 return (0);
253 }
254
255 static device_method_t an_pci_methods[] = {
256 /* Device interface */
257 DEVMETHOD(device_probe, an_probe_pci),
258 DEVMETHOD(device_attach, an_attach_pci),
259 DEVMETHOD(device_detach, an_detach),
260 DEVMETHOD(device_shutdown, an_shutdown),
261 DEVMETHOD(device_suspend, an_suspend_pci),
262 DEVMETHOD(device_resume, an_resume_pci),
263 { 0, 0 }
264 };
265
266 static driver_t an_pci_driver = {
267 "an",
268 an_pci_methods,
269 sizeof(struct an_softc),
270 };
271
272 static devclass_t an_devclass;
273
274 DRIVER_MODULE(an, pci, an_pci_driver, an_devclass, 0, 0);
275 MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, an,
276 an_devs, nitems(an_devs) - 1);
277 MODULE_DEPEND(an, pci, 1, 1, 1);
278 MODULE_DEPEND(an, wlan, 1, 1, 1);
279