1 /*-
2 * Copyright (c) 2009-2010 Weongyo Jeong <weongyo@freebsd.org>
3 * 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 * without modification.
11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
13 * redistribution must be conditioned upon including a substantially
14 * similar Disclaimer requirement for further binary redistribution.
15 *
16 * NO WARRANTY
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27 * THE POSSIBILITY OF SUCH DAMAGES.
28 */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD: stable/9/sys/dev/siba/siba_bwn.c 229093 2011-12-31 14:12:12Z hselasky $");
32
33 /*
34 * Sonics Silicon Backplane front-end for bwn(4).
35 */
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/module.h>
40 #include <sys/kernel.h>
41 #include <sys/lock.h>
42 #include <sys/mutex.h>
43 #include <sys/errno.h>
44 #include <machine/bus.h>
45 #include <machine/resource.h>
46 #include <sys/bus.h>
47 #include <sys/rman.h>
48 #include <sys/socket.h>
49
50 #include <net/if.h>
51 #include <net/if_media.h>
52 #include <net/if_arp.h>
53
54 #include <dev/pci/pcivar.h>
55 #include <dev/pci/pcireg.h>
56
57 #include <dev/siba/siba_ids.h>
58 #include <dev/siba/sibareg.h>
59 #include <dev/siba/sibavar.h>
60
61 /*
62 * PCI glue.
63 */
64
65 struct siba_bwn_softc {
66 /* Child driver using MSI. */
67 device_t ssc_msi_child;
68 struct siba_softc ssc_siba;
69 };
70
71 #define BS_BAR 0x10
72 #define PCI_VENDOR_BROADCOM 0x14e4
73 #define N(a) (sizeof(a) / sizeof(a[0]))
74
75 static const struct siba_dev {
76 uint16_t vid;
77 uint16_t did;
78 const char *desc;
79 } siba_devices[] = {
80 { PCI_VENDOR_BROADCOM, 0x4301, "Broadcom BCM4301 802.11b Wireless" },
81 { PCI_VENDOR_BROADCOM, 0x4306, "Unknown" },
82 { PCI_VENDOR_BROADCOM, 0x4307, "Broadcom BCM4307 802.11b Wireless" },
83 { PCI_VENDOR_BROADCOM, 0x4311, "Broadcom BCM4311 802.11b/g Wireless" },
84 { PCI_VENDOR_BROADCOM, 0x4312,
85 "Broadcom BCM4312 802.11a/b/g Wireless" },
86 { PCI_VENDOR_BROADCOM, 0x4315, "Broadcom BCM4312 802.11b/g Wireless" },
87 { PCI_VENDOR_BROADCOM, 0x4318, "Broadcom BCM4318 802.11b/g Wireless" },
88 { PCI_VENDOR_BROADCOM, 0x4319,
89 "Broadcom BCM4318 802.11a/b/g Wireless" },
90 { PCI_VENDOR_BROADCOM, 0x4320, "Broadcom BCM4306 802.11b/g Wireless" },
91 { PCI_VENDOR_BROADCOM, 0x4321, "Broadcom BCM4306 802.11a Wireless" },
92 { PCI_VENDOR_BROADCOM, 0x4324,
93 "Broadcom BCM4309 802.11a/b/g Wireless" },
94 { PCI_VENDOR_BROADCOM, 0x4325, "Broadcom BCM4306 802.11b/g Wireless" },
95 { PCI_VENDOR_BROADCOM, 0x4328, "Unknown" },
96 { PCI_VENDOR_BROADCOM, 0x4329, "Unknown" },
97 { PCI_VENDOR_BROADCOM, 0x432b, "Unknown" }
98 };
99
100 int siba_core_attach(struct siba_softc *);
101 int siba_core_detach(struct siba_softc *);
102 int siba_core_suspend(struct siba_softc *);
103 int siba_core_resume(struct siba_softc *);
104
105 static int
siba_bwn_probe(device_t dev)106 siba_bwn_probe(device_t dev)
107 {
108 int i;
109 uint16_t did, vid;
110
111 did = pci_get_device(dev);
112 vid = pci_get_vendor(dev);
113
114 for (i = 0; i < N(siba_devices); i++) {
115 if (siba_devices[i].did == did && siba_devices[i].vid == vid) {
116 device_set_desc(dev, siba_devices[i].desc);
117 return (BUS_PROBE_DEFAULT);
118 }
119 }
120 return (ENXIO);
121 }
122
123 static int
siba_bwn_attach(device_t dev)124 siba_bwn_attach(device_t dev)
125 {
126 struct siba_bwn_softc *ssc = device_get_softc(dev);
127 struct siba_softc *siba = &ssc->ssc_siba;
128
129 siba->siba_dev = dev;
130 siba->siba_type = SIBA_TYPE_PCI;
131
132 /*
133 * Enable bus mastering.
134 */
135 pci_enable_busmaster(dev);
136
137 /*
138 * Setup memory-mapping of PCI registers.
139 */
140 siba->siba_mem_rid = SIBA_PCIR_BAR;
141 siba->siba_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
142 &siba->siba_mem_rid, RF_ACTIVE);
143 if (siba->siba_mem_res == NULL) {
144 device_printf(dev, "cannot map register space\n");
145 return (ENXIO);
146 }
147 siba->siba_mem_bt = rman_get_bustag(siba->siba_mem_res);
148 siba->siba_mem_bh = rman_get_bushandle(siba->siba_mem_res);
149
150 /* Get more PCI information */
151 siba->siba_pci_did = pci_get_device(dev);
152 siba->siba_pci_vid = pci_get_vendor(dev);
153 siba->siba_pci_subvid = pci_get_subvendor(dev);
154 siba->siba_pci_subdid = pci_get_subdevice(dev);
155 siba->siba_pci_revid = pci_get_revid(dev);
156
157 return (siba_core_attach(siba));
158 }
159
160 static int
siba_bwn_detach(device_t dev)161 siba_bwn_detach(device_t dev)
162 {
163 struct siba_bwn_softc *ssc = device_get_softc(dev);
164 struct siba_softc *siba = &ssc->ssc_siba;
165
166 /* check if device was removed */
167 siba->siba_invalid = !bus_child_present(dev);
168
169 pci_disable_busmaster(dev);
170 bus_generic_detach(dev);
171 siba_core_detach(siba);
172
173 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, siba->siba_mem_res);
174
175 return (0);
176 }
177
178 static int
siba_bwn_shutdown(device_t dev)179 siba_bwn_shutdown(device_t dev)
180 {
181 device_t *devlistp;
182 int devcnt, error = 0, i;
183
184 error = device_get_children(dev, &devlistp, &devcnt);
185 if (error != 0)
186 return (error);
187
188 for (i = 0 ; i < devcnt ; i++)
189 device_shutdown(devlistp[i]);
190 free(devlistp, M_TEMP);
191 return (0);
192 }
193
194 static int
siba_bwn_suspend(device_t dev)195 siba_bwn_suspend(device_t dev)
196 {
197 struct siba_bwn_softc *ssc = device_get_softc(dev);
198 struct siba_softc *siba = &ssc->ssc_siba;
199 device_t *devlistp;
200 int devcnt, error = 0, i, j;
201
202 error = device_get_children(dev, &devlistp, &devcnt);
203 if (error != 0)
204 return (error);
205
206 for (i = 0 ; i < devcnt ; i++) {
207 error = DEVICE_SUSPEND(devlistp[i]);
208 if (error) {
209 for (j = 0; j < i; j++)
210 DEVICE_RESUME(devlistp[j]);
211 free(devlistp, M_TEMP);
212 return (error);
213 }
214 }
215 free(devlistp, M_TEMP);
216 return (siba_core_suspend(siba));
217 }
218
219 static int
siba_bwn_resume(device_t dev)220 siba_bwn_resume(device_t dev)
221 {
222 struct siba_bwn_softc *ssc = device_get_softc(dev);
223 struct siba_softc *siba = &ssc->ssc_siba;
224 device_t *devlistp;
225 int devcnt, error = 0, i;
226
227 error = siba_core_resume(siba);
228 if (error != 0)
229 return (error);
230
231 error = device_get_children(dev, &devlistp, &devcnt);
232 if (error != 0)
233 return (error);
234
235 for (i = 0 ; i < devcnt ; i++)
236 DEVICE_RESUME(devlistp[i]);
237 free(devlistp, M_TEMP);
238 return (0);
239 }
240
241 /* proxying to the parent */
242 static struct resource *
siba_bwn_alloc_resource(device_t dev,device_t child,int type,int * rid,u_long start,u_long end,u_long count,u_int flags)243 siba_bwn_alloc_resource(device_t dev, device_t child, int type, int *rid,
244 u_long start, u_long end, u_long count, u_int flags)
245 {
246
247 return (BUS_ALLOC_RESOURCE(device_get_parent(dev), dev,
248 type, rid, start, end, count, flags));
249 }
250
251 /* proxying to the parent */
252 static int
siba_bwn_release_resource(device_t dev,device_t child,int type,int rid,struct resource * r)253 siba_bwn_release_resource(device_t dev, device_t child, int type,
254 int rid, struct resource *r)
255 {
256
257 return (BUS_RELEASE_RESOURCE(device_get_parent(dev), dev, type,
258 rid, r));
259 }
260
261 /* proxying to the parent */
262 static int
siba_bwn_setup_intr(device_t dev,device_t child,struct resource * irq,int flags,driver_filter_t * filter,driver_intr_t * intr,void * arg,void ** cookiep)263 siba_bwn_setup_intr(device_t dev, device_t child, struct resource *irq,
264 int flags, driver_filter_t *filter, driver_intr_t *intr, void *arg,
265 void **cookiep)
266 {
267
268 return (BUS_SETUP_INTR(device_get_parent(dev), dev, irq, flags,
269 filter, intr, arg, cookiep));
270 }
271
272 /* proxying to the parent */
273 static int
siba_bwn_teardown_intr(device_t dev,device_t child,struct resource * irq,void * cookie)274 siba_bwn_teardown_intr(device_t dev, device_t child, struct resource *irq,
275 void *cookie)
276 {
277
278 return (BUS_TEARDOWN_INTR(device_get_parent(dev), dev, irq, cookie));
279 }
280
281 static int
siba_bwn_find_extcap(device_t dev,device_t child,int capability,int * capreg)282 siba_bwn_find_extcap(device_t dev, device_t child, int capability,
283 int *capreg)
284 {
285
286 return (pci_find_extcap(dev, capability, capreg));
287 }
288
289 static int
siba_bwn_alloc_msi(device_t dev,device_t child,int * count)290 siba_bwn_alloc_msi(device_t dev, device_t child, int *count)
291 {
292 struct siba_bwn_softc *ssc;
293 int error;
294
295 ssc = device_get_softc(dev);
296 if (ssc->ssc_msi_child != NULL)
297 return (EBUSY);
298 error = pci_alloc_msi(dev, count);
299 if (error == 0)
300 ssc->ssc_msi_child = child;
301 return (error);
302 }
303
304 static int
siba_bwn_release_msi(device_t dev,device_t child)305 siba_bwn_release_msi(device_t dev, device_t child)
306 {
307 struct siba_bwn_softc *ssc;
308 int error;
309
310 ssc = device_get_softc(dev);
311 if (ssc->ssc_msi_child != child)
312 return (ENXIO);
313 error = pci_release_msi(dev);
314 if (error == 0)
315 ssc->ssc_msi_child = NULL;
316 return (error);
317 }
318
319 static int
siba_bwn_msi_count(device_t dev,device_t child)320 siba_bwn_msi_count(device_t dev, device_t child)
321 {
322
323 return (pci_msi_count(dev));
324 }
325
326 static int
siba_bwn_read_ivar(device_t dev,device_t child,int which,uintptr_t * result)327 siba_bwn_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
328 {
329 struct siba_dev_softc *sd;
330 struct siba_softc *siba;
331
332 sd = device_get_ivars(child);
333 siba = sd->sd_bus;
334
335 switch (which) {
336 case SIBA_IVAR_VENDOR:
337 *result = sd->sd_id.sd_vendor;
338 break;
339 case SIBA_IVAR_DEVICE:
340 *result = sd->sd_id.sd_device;
341 break;
342 case SIBA_IVAR_REVID:
343 *result = sd->sd_id.sd_rev;
344 break;
345 case SIBA_IVAR_PCI_VENDOR:
346 *result = siba->siba_pci_vid;
347 break;
348 case SIBA_IVAR_PCI_DEVICE:
349 *result = siba->siba_pci_did;
350 break;
351 case SIBA_IVAR_PCI_SUBVENDOR:
352 *result = siba->siba_pci_subvid;
353 break;
354 case SIBA_IVAR_PCI_SUBDEVICE:
355 *result = siba->siba_pci_subdid;
356 break;
357 case SIBA_IVAR_PCI_REVID:
358 *result = siba->siba_pci_revid;
359 break;
360 case SIBA_IVAR_CHIPID:
361 *result = siba->siba_chipid;
362 break;
363 case SIBA_IVAR_CHIPREV:
364 *result = siba->siba_chiprev;
365 break;
366 case SIBA_IVAR_CHIPPKG:
367 *result = siba->siba_chippkg;
368 break;
369 case SIBA_IVAR_TYPE:
370 *result = siba->siba_type;
371 break;
372 case SIBA_IVAR_CC_PMUFREQ:
373 *result = siba->siba_cc.scc_pmu.freq;
374 break;
375 case SIBA_IVAR_CC_CAPS:
376 *result = siba->siba_cc.scc_caps;
377 break;
378 case SIBA_IVAR_CC_POWERDELAY:
379 *result = siba->siba_cc.scc_powerup_delay;
380 break;
381 case SIBA_IVAR_PCICORE_REVID:
382 *result = siba->siba_pci.spc_dev->sd_id.sd_rev;
383 break;
384 default:
385 return (ENOENT);
386 }
387
388 return (0);
389 }
390
391 static device_method_t siba_bwn_methods[] = {
392 /* Device interface */
393 DEVMETHOD(device_probe, siba_bwn_probe),
394 DEVMETHOD(device_attach, siba_bwn_attach),
395 DEVMETHOD(device_detach, siba_bwn_detach),
396 DEVMETHOD(device_shutdown, siba_bwn_shutdown),
397 DEVMETHOD(device_suspend, siba_bwn_suspend),
398 DEVMETHOD(device_resume, siba_bwn_resume),
399
400 /* Bus interface */
401 DEVMETHOD(bus_alloc_resource, siba_bwn_alloc_resource),
402 DEVMETHOD(bus_release_resource, siba_bwn_release_resource),
403 DEVMETHOD(bus_read_ivar, siba_bwn_read_ivar),
404 DEVMETHOD(bus_setup_intr, siba_bwn_setup_intr),
405 DEVMETHOD(bus_teardown_intr, siba_bwn_teardown_intr),
406
407 /* PCI interface */
408 DEVMETHOD(pci_find_extcap, siba_bwn_find_extcap),
409 DEVMETHOD(pci_alloc_msi, siba_bwn_alloc_msi),
410 DEVMETHOD(pci_release_msi, siba_bwn_release_msi),
411 DEVMETHOD(pci_msi_count, siba_bwn_msi_count),
412
413 DEVMETHOD_END
414 };
415 static driver_t siba_bwn_driver = {
416 "siba_bwn",
417 siba_bwn_methods,
418 sizeof(struct siba_bwn_softc)
419 };
420 static devclass_t siba_bwn_devclass;
421 DRIVER_MODULE(siba_bwn, pci, siba_bwn_driver, siba_bwn_devclass, 0, 0);
422 MODULE_VERSION(siba_bwn, 1);
423