1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2004-2006
5 * Damien Bergamini <[email protected]>. All rights reserved.
6 * Copyright (c) 2006 Sam Leffler, Errno Consulting
7 * Copyright (c) 2007 Andrew Thompson <[email protected]>
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice unmodified, this list of conditions, and the following
14 * disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34
35 /*-
36 * Intel(R) PRO/Wireless 2100 MiniPCI driver
37 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
38 */
39
40 #include <sys/param.h>
41 #include <sys/sysctl.h>
42 #include <sys/sockio.h>
43 #include <sys/mbuf.h>
44 #include <sys/kernel.h>
45 #include <sys/socket.h>
46 #include <sys/systm.h>
47 #include <sys/malloc.h>
48 #include <sys/queue.h>
49 #include <sys/taskqueue.h>
50 #include <sys/module.h>
51 #include <sys/bus.h>
52 #include <sys/endian.h>
53 #include <sys/linker.h>
54 #include <sys/firmware.h>
55
56 #include <machine/bus.h>
57 #include <machine/resource.h>
58 #include <sys/rman.h>
59
60 #include <dev/pci/pcireg.h>
61 #include <dev/pci/pcivar.h>
62
63 #include <net/bpf.h>
64 #include <net/if.h>
65 #include <net/if_var.h>
66 #include <net/if_arp.h>
67 #include <net/ethernet.h>
68 #include <net/if_dl.h>
69 #include <net/if_media.h>
70 #include <net/if_types.h>
71
72 #include <net80211/ieee80211_var.h>
73 #include <net80211/ieee80211_radiotap.h>
74
75 #include <netinet/in.h>
76 #include <netinet/in_systm.h>
77 #include <netinet/in_var.h>
78 #include <netinet/ip.h>
79 #include <netinet/if_ether.h>
80
81 #include <dev/ipw/if_ipwreg.h>
82 #include <dev/ipw/if_ipwvar.h>
83
84 #define IPW_DEBUG
85 #ifdef IPW_DEBUG
86 #define DPRINTF(x) do { if (ipw_debug > 0) printf x; } while (0)
87 #define DPRINTFN(n, x) do { if (ipw_debug >= (n)) printf x; } while (0)
88 int ipw_debug = 0;
89 SYSCTL_INT(_debug, OID_AUTO, ipw, CTLFLAG_RW, &ipw_debug, 0, "ipw debug level");
90 #else
91 #define DPRINTF(x)
92 #define DPRINTFN(n, x)
93 #endif
94
95 MODULE_DEPEND(ipw, pci, 1, 1, 1);
96 MODULE_DEPEND(ipw, wlan, 1, 1, 1);
97 MODULE_DEPEND(ipw, firmware, 1, 1, 1);
98
99 struct ipw_ident {
100 uint16_t vendor;
101 uint16_t device;
102 const char *name;
103 };
104
105 static const struct ipw_ident ipw_ident_table[] = {
106 { 0x8086, 0x1043, "Intel(R) PRO/Wireless 2100 MiniPCI" },
107
108 { 0, 0, NULL }
109 };
110
111 static struct ieee80211vap *ipw_vap_create(struct ieee80211com *,
112 const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
113 const uint8_t [IEEE80211_ADDR_LEN],
114 const uint8_t [IEEE80211_ADDR_LEN]);
115 static void ipw_vap_delete(struct ieee80211vap *);
116 static int ipw_dma_alloc(struct ipw_softc *);
117 static void ipw_release(struct ipw_softc *);
118 static void ipw_media_status(struct ifnet *, struct ifmediareq *);
119 static int ipw_newstate(struct ieee80211vap *, enum ieee80211_state, int);
120 static uint16_t ipw_read_prom_word(struct ipw_softc *, uint8_t);
121 static uint16_t ipw_read_chanmask(struct ipw_softc *);
122 static void ipw_rx_cmd_intr(struct ipw_softc *, struct ipw_soft_buf *);
123 static void ipw_rx_newstate_intr(struct ipw_softc *, struct ipw_soft_buf *);
124 static void ipw_rx_data_intr(struct ipw_softc *, struct ipw_status *,
125 struct ipw_soft_bd *, struct ipw_soft_buf *);
126 static void ipw_rx_intr(struct ipw_softc *);
127 static void ipw_release_sbd(struct ipw_softc *, struct ipw_soft_bd *);
128 static void ipw_tx_intr(struct ipw_softc *);
129 static void ipw_intr(void *);
130 static void ipw_dma_map_addr(void *, bus_dma_segment_t *, int, int);
131 static const char * ipw_cmdname(int);
132 static int ipw_cmd(struct ipw_softc *, uint32_t, void *, uint32_t);
133 static int ipw_tx_start(struct ipw_softc *, struct mbuf *,
134 struct ieee80211_node *);
135 static int ipw_raw_xmit(struct ieee80211_node *, struct mbuf *,
136 const struct ieee80211_bpf_params *);
137 static int ipw_transmit(struct ieee80211com *, struct mbuf *);
138 static void ipw_start(struct ipw_softc *);
139 static void ipw_watchdog(void *);
140 static void ipw_parent(struct ieee80211com *);
141 static void ipw_stop_master(struct ipw_softc *);
142 static int ipw_enable(struct ipw_softc *);
143 static int ipw_disable(struct ipw_softc *);
144 static int ipw_reset(struct ipw_softc *);
145 static int ipw_load_ucode(struct ipw_softc *, const char *, int);
146 static int ipw_load_firmware(struct ipw_softc *, const char *, int);
147 static int ipw_config(struct ipw_softc *);
148 static void ipw_assoc(struct ieee80211com *, struct ieee80211vap *);
149 static void ipw_disassoc(struct ieee80211com *, struct ieee80211vap *);
150 static void ipw_init_task(void *, int);
151 static void ipw_init(void *);
152 static void ipw_init_locked(struct ipw_softc *);
153 static void ipw_stop(void *);
154 static void ipw_stop_locked(struct ipw_softc *);
155 static int ipw_sysctl_stats(SYSCTL_HANDLER_ARGS);
156 static int ipw_sysctl_radio(SYSCTL_HANDLER_ARGS);
157 static uint32_t ipw_read_table1(struct ipw_softc *, uint32_t);
158 static void ipw_write_table1(struct ipw_softc *, uint32_t, uint32_t);
159 #if 0
160 static int ipw_read_table2(struct ipw_softc *, uint32_t, void *,
161 uint32_t *);
162 static void ipw_read_mem_1(struct ipw_softc *, bus_size_t, uint8_t *,
163 bus_size_t);
164 #endif
165 static void ipw_write_mem_1(struct ipw_softc *, bus_size_t,
166 const uint8_t *, bus_size_t);
167 static int ipw_scan(struct ipw_softc *);
168 static void ipw_scan_start(struct ieee80211com *);
169 static void ipw_scan_end(struct ieee80211com *);
170 static void ipw_getradiocaps(struct ieee80211com *, int, int *,
171 struct ieee80211_channel[]);
172 static void ipw_set_channel(struct ieee80211com *);
173 static void ipw_scan_curchan(struct ieee80211_scan_state *,
174 unsigned long maxdwell);
175 static void ipw_scan_mindwell(struct ieee80211_scan_state *);
176
177 static int ipw_probe(device_t);
178 static int ipw_attach(device_t);
179 static int ipw_detach(device_t);
180 static int ipw_shutdown(device_t);
181 static int ipw_suspend(device_t);
182 static int ipw_resume(device_t);
183
184 static device_method_t ipw_methods[] = {
185 /* Device interface */
186 DEVMETHOD(device_probe, ipw_probe),
187 DEVMETHOD(device_attach, ipw_attach),
188 DEVMETHOD(device_detach, ipw_detach),
189 DEVMETHOD(device_shutdown, ipw_shutdown),
190 DEVMETHOD(device_suspend, ipw_suspend),
191 DEVMETHOD(device_resume, ipw_resume),
192
193 DEVMETHOD_END
194 };
195
196 static driver_t ipw_driver = {
197 "ipw",
198 ipw_methods,
199 sizeof (struct ipw_softc)
200 };
201
202 static devclass_t ipw_devclass;
203
204 DRIVER_MODULE(ipw, pci, ipw_driver, ipw_devclass, NULL, NULL);
205 MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, ipw, ipw_ident_table,
206 nitems(ipw_ident_table) - 1);
207
208 MODULE_VERSION(ipw, 1);
209
210 static int
ipw_probe(device_t dev)211 ipw_probe(device_t dev)
212 {
213 const struct ipw_ident *ident;
214
215 for (ident = ipw_ident_table; ident->name != NULL; ident++) {
216 if (pci_get_vendor(dev) == ident->vendor &&
217 pci_get_device(dev) == ident->device) {
218 device_set_desc(dev, ident->name);
219 return (BUS_PROBE_DEFAULT);
220 }
221 }
222 return ENXIO;
223 }
224
225 /* Base Address Register */
226 static int
ipw_attach(device_t dev)227 ipw_attach(device_t dev)
228 {
229 struct ipw_softc *sc = device_get_softc(dev);
230 struct ieee80211com *ic = &sc->sc_ic;
231 uint16_t val;
232 int error, i;
233
234 sc->sc_dev = dev;
235
236 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
237 MTX_DEF | MTX_RECURSE);
238 mbufq_init(&sc->sc_snd, ifqmaxlen);
239 TASK_INIT(&sc->sc_init_task, 0, ipw_init_task, sc);
240 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
241
242 pci_write_config(dev, 0x41, 0, 1);
243
244 /* enable bus-mastering */
245 pci_enable_busmaster(dev);
246
247 i = PCIR_BAR(0);
248 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
249 if (sc->mem == NULL) {
250 device_printf(dev, "could not allocate memory resource\n");
251 goto fail;
252 }
253
254 sc->sc_st = rman_get_bustag(sc->mem);
255 sc->sc_sh = rman_get_bushandle(sc->mem);
256
257 i = 0;
258 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
259 RF_ACTIVE | RF_SHAREABLE);
260 if (sc->irq == NULL) {
261 device_printf(dev, "could not allocate interrupt resource\n");
262 goto fail1;
263 }
264
265 if (ipw_reset(sc) != 0) {
266 device_printf(dev, "could not reset adapter\n");
267 goto fail2;
268 }
269
270 if (ipw_dma_alloc(sc) != 0) {
271 device_printf(dev, "could not allocate DMA resources\n");
272 goto fail2;
273 }
274
275 ic->ic_softc = sc;
276 ic->ic_name = device_get_nameunit(dev);
277 ic->ic_opmode = IEEE80211_M_STA;
278 ic->ic_phytype = IEEE80211_T_DS;
279
280 /* set device capabilities */
281 ic->ic_caps =
282 IEEE80211_C_STA /* station mode supported */
283 | IEEE80211_C_IBSS /* IBSS mode supported */
284 | IEEE80211_C_MONITOR /* monitor mode supported */
285 | IEEE80211_C_PMGT /* power save supported */
286 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
287 | IEEE80211_C_WPA /* 802.11i supported */
288 ;
289
290 /* read MAC address from EEPROM */
291 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 0);
292 ic->ic_macaddr[0] = val >> 8;
293 ic->ic_macaddr[1] = val & 0xff;
294 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 1);
295 ic->ic_macaddr[2] = val >> 8;
296 ic->ic_macaddr[3] = val & 0xff;
297 val = ipw_read_prom_word(sc, IPW_EEPROM_MAC + 2);
298 ic->ic_macaddr[4] = val >> 8;
299 ic->ic_macaddr[5] = val & 0xff;
300
301 sc->chanmask = ipw_read_chanmask(sc);
302 ipw_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
303 ic->ic_channels);
304
305 /* check support for radio transmitter switch in EEPROM */
306 if (!(ipw_read_prom_word(sc, IPW_EEPROM_RADIO) & 8))
307 sc->flags |= IPW_FLAG_HAS_RADIO_SWITCH;
308
309 ieee80211_ifattach(ic);
310 ic->ic_scan_start = ipw_scan_start;
311 ic->ic_scan_end = ipw_scan_end;
312 ic->ic_getradiocaps = ipw_getradiocaps;
313 ic->ic_set_channel = ipw_set_channel;
314 ic->ic_scan_curchan = ipw_scan_curchan;
315 ic->ic_scan_mindwell = ipw_scan_mindwell;
316 ic->ic_raw_xmit = ipw_raw_xmit;
317 ic->ic_vap_create = ipw_vap_create;
318 ic->ic_vap_delete = ipw_vap_delete;
319 ic->ic_transmit = ipw_transmit;
320 ic->ic_parent = ipw_parent;
321
322 ieee80211_radiotap_attach(ic,
323 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
324 IPW_TX_RADIOTAP_PRESENT,
325 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
326 IPW_RX_RADIOTAP_PRESENT);
327
328 /*
329 * Add a few sysctl knobs.
330 */
331 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
332 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "radio",
333 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, 0,
334 ipw_sysctl_radio, "I",
335 "radio transmitter switch state (0=off, 1=on)");
336
337 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
338 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "stats",
339 CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, 0,
340 ipw_sysctl_stats, "S", "statistics");
341
342 /*
343 * Hook our interrupt after all initialization is complete.
344 */
345 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
346 NULL, ipw_intr, sc, &sc->sc_ih);
347 if (error != 0) {
348 device_printf(dev, "could not set up interrupt\n");
349 goto fail3;
350 }
351
352 if (bootverbose)
353 ieee80211_announce(ic);
354
355 return 0;
356 fail3:
357 ipw_release(sc);
358 fail2:
359 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
360 fail1:
361 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
362 sc->mem);
363 fail:
364 mtx_destroy(&sc->sc_mtx);
365 return ENXIO;
366 }
367
368 static int
ipw_detach(device_t dev)369 ipw_detach(device_t dev)
370 {
371 struct ipw_softc *sc = device_get_softc(dev);
372 struct ieee80211com *ic = &sc->sc_ic;
373
374 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
375
376 ieee80211_draintask(ic, &sc->sc_init_task);
377 ipw_stop(sc);
378
379 ieee80211_ifdetach(ic);
380
381 callout_drain(&sc->sc_wdtimer);
382 mbufq_drain(&sc->sc_snd);
383
384 ipw_release(sc);
385
386 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
387
388 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
389 sc->mem);
390
391 if (sc->sc_firmware != NULL) {
392 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
393 sc->sc_firmware = NULL;
394 }
395
396 mtx_destroy(&sc->sc_mtx);
397
398 return 0;
399 }
400
401 static struct ieee80211vap *
ipw_vap_create(struct ieee80211com * ic,const char name[IFNAMSIZ],int unit,enum ieee80211_opmode opmode,int flags,const uint8_t bssid[IEEE80211_ADDR_LEN],const uint8_t mac[IEEE80211_ADDR_LEN])402 ipw_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
403 enum ieee80211_opmode opmode, int flags,
404 const uint8_t bssid[IEEE80211_ADDR_LEN],
405 const uint8_t mac[IEEE80211_ADDR_LEN])
406 {
407 struct ipw_softc *sc = ic->ic_softc;
408 struct ipw_vap *ivp;
409 struct ieee80211vap *vap;
410 const struct firmware *fp;
411 const struct ipw_firmware_hdr *hdr;
412 const char *imagename;
413
414 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
415 return NULL;
416
417 switch (opmode) {
418 case IEEE80211_M_STA:
419 imagename = "ipw_bss";
420 break;
421 case IEEE80211_M_IBSS:
422 imagename = "ipw_ibss";
423 break;
424 case IEEE80211_M_MONITOR:
425 imagename = "ipw_monitor";
426 break;
427 default:
428 return NULL;
429 }
430
431 /*
432 * Load firmware image using the firmware(9) subsystem. Doing
433 * this unlocked is ok since we're single-threaded by the
434 * 802.11 layer.
435 */
436 if (sc->sc_firmware == NULL ||
437 strcmp(sc->sc_firmware->name, imagename) != 0) {
438 if (sc->sc_firmware != NULL)
439 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
440 sc->sc_firmware = firmware_get(imagename);
441 }
442 if (sc->sc_firmware == NULL) {
443 device_printf(sc->sc_dev,
444 "could not load firmware image '%s'\n", imagename);
445 return NULL;
446 }
447 fp = sc->sc_firmware;
448 if (fp->datasize < sizeof *hdr) {
449 device_printf(sc->sc_dev,
450 "firmware image too short %zu\n", fp->datasize);
451 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
452 sc->sc_firmware = NULL;
453 return NULL;
454 }
455 hdr = (const struct ipw_firmware_hdr *)fp->data;
456 if (fp->datasize < sizeof *hdr + le32toh(hdr->mainsz) +
457 le32toh(hdr->ucodesz)) {
458 device_printf(sc->sc_dev,
459 "firmware image too short %zu\n", fp->datasize);
460 firmware_put(sc->sc_firmware, FIRMWARE_UNLOAD);
461 sc->sc_firmware = NULL;
462 return NULL;
463 }
464
465 ivp = malloc(sizeof(struct ipw_vap), M_80211_VAP, M_WAITOK | M_ZERO);
466 vap = &ivp->vap;
467
468 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
469 /* override with driver methods */
470 ivp->newstate = vap->iv_newstate;
471 vap->iv_newstate = ipw_newstate;
472
473 /* complete setup */
474 ieee80211_vap_attach(vap, ieee80211_media_change, ipw_media_status,
475 mac);
476 ic->ic_opmode = opmode;
477 return vap;
478 }
479
480 static void
ipw_vap_delete(struct ieee80211vap * vap)481 ipw_vap_delete(struct ieee80211vap *vap)
482 {
483 struct ipw_vap *ivp = IPW_VAP(vap);
484
485 ieee80211_vap_detach(vap);
486 free(ivp, M_80211_VAP);
487 }
488
489 static int
ipw_dma_alloc(struct ipw_softc * sc)490 ipw_dma_alloc(struct ipw_softc *sc)
491 {
492 struct ipw_soft_bd *sbd;
493 struct ipw_soft_hdr *shdr;
494 struct ipw_soft_buf *sbuf;
495 bus_addr_t physaddr;
496 int error, i;
497
498 /*
499 * Allocate parent DMA tag for subsequent allocations.
500 */
501 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
502 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
503 BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED,
504 BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->parent_dmat);
505 if (error != 0) {
506 device_printf(sc->sc_dev, "could not create parent DMA tag\n");
507 goto fail;
508 }
509
510 /*
511 * Allocate and map tx ring.
512 */
513 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
514 BUS_SPACE_MAXADDR, NULL, NULL, IPW_TBD_SZ, 1, IPW_TBD_SZ, 0, NULL,
515 NULL, &sc->tbd_dmat);
516 if (error != 0) {
517 device_printf(sc->sc_dev, "could not create tx ring DMA tag\n");
518 goto fail;
519 }
520
521 error = bus_dmamem_alloc(sc->tbd_dmat, (void **)&sc->tbd_list,
522 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->tbd_map);
523 if (error != 0) {
524 device_printf(sc->sc_dev,
525 "could not allocate tx ring DMA memory\n");
526 goto fail;
527 }
528
529 error = bus_dmamap_load(sc->tbd_dmat, sc->tbd_map, sc->tbd_list,
530 IPW_TBD_SZ, ipw_dma_map_addr, &sc->tbd_phys, 0);
531 if (error != 0) {
532 device_printf(sc->sc_dev, "could not map tx ring DMA memory\n");
533 goto fail;
534 }
535
536 /*
537 * Allocate and map rx ring.
538 */
539 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
540 BUS_SPACE_MAXADDR, NULL, NULL, IPW_RBD_SZ, 1, IPW_RBD_SZ, 0, NULL,
541 NULL, &sc->rbd_dmat);
542 if (error != 0) {
543 device_printf(sc->sc_dev, "could not create rx ring DMA tag\n");
544 goto fail;
545 }
546
547 error = bus_dmamem_alloc(sc->rbd_dmat, (void **)&sc->rbd_list,
548 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->rbd_map);
549 if (error != 0) {
550 device_printf(sc->sc_dev,
551 "could not allocate rx ring DMA memory\n");
552 goto fail;
553 }
554
555 error = bus_dmamap_load(sc->rbd_dmat, sc->rbd_map, sc->rbd_list,
556 IPW_RBD_SZ, ipw_dma_map_addr, &sc->rbd_phys, 0);
557 if (error != 0) {
558 device_printf(sc->sc_dev, "could not map rx ring DMA memory\n");
559 goto fail;
560 }
561
562 /*
563 * Allocate and map status ring.
564 */
565 error = bus_dma_tag_create(sc->parent_dmat, 4, 0, BUS_SPACE_MAXADDR_32BIT,
566 BUS_SPACE_MAXADDR, NULL, NULL, IPW_STATUS_SZ, 1, IPW_STATUS_SZ, 0,
567 NULL, NULL, &sc->status_dmat);
568 if (error != 0) {
569 device_printf(sc->sc_dev,
570 "could not create status ring DMA tag\n");
571 goto fail;
572 }
573
574 error = bus_dmamem_alloc(sc->status_dmat, (void **)&sc->status_list,
575 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->status_map);
576 if (error != 0) {
577 device_printf(sc->sc_dev,
578 "could not allocate status ring DMA memory\n");
579 goto fail;
580 }
581
582 error = bus_dmamap_load(sc->status_dmat, sc->status_map,
583 sc->status_list, IPW_STATUS_SZ, ipw_dma_map_addr, &sc->status_phys,
584 0);
585 if (error != 0) {
586 device_printf(sc->sc_dev,
587 "could not map status ring DMA memory\n");
588 goto fail;
589 }
590
591 /*
592 * Allocate command DMA map.
593 */
594 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
595 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_cmd), 1,
596 sizeof (struct ipw_cmd), 0, NULL, NULL, &sc->cmd_dmat);
597 if (error != 0) {
598 device_printf(sc->sc_dev, "could not create command DMA tag\n");
599 goto fail;
600 }
601
602 error = bus_dmamap_create(sc->cmd_dmat, 0, &sc->cmd_map);
603 if (error != 0) {
604 device_printf(sc->sc_dev,
605 "could not create command DMA map\n");
606 goto fail;
607 }
608
609 /*
610 * Allocate headers DMA maps.
611 */
612 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
613 BUS_SPACE_MAXADDR, NULL, NULL, sizeof (struct ipw_hdr), 1,
614 sizeof (struct ipw_hdr), 0, NULL, NULL, &sc->hdr_dmat);
615 if (error != 0) {
616 device_printf(sc->sc_dev, "could not create header DMA tag\n");
617 goto fail;
618 }
619
620 SLIST_INIT(&sc->free_shdr);
621 for (i = 0; i < IPW_NDATA; i++) {
622 shdr = &sc->shdr_list[i];
623 error = bus_dmamap_create(sc->hdr_dmat, 0, &shdr->map);
624 if (error != 0) {
625 device_printf(sc->sc_dev,
626 "could not create header DMA map\n");
627 goto fail;
628 }
629 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
630 }
631
632 /*
633 * Allocate tx buffers DMA maps.
634 */
635 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
636 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IPW_MAX_NSEG, MCLBYTES, 0,
637 NULL, NULL, &sc->txbuf_dmat);
638 if (error != 0) {
639 device_printf(sc->sc_dev, "could not create tx DMA tag\n");
640 goto fail;
641 }
642
643 SLIST_INIT(&sc->free_sbuf);
644 for (i = 0; i < IPW_NDATA; i++) {
645 sbuf = &sc->tx_sbuf_list[i];
646 error = bus_dmamap_create(sc->txbuf_dmat, 0, &sbuf->map);
647 if (error != 0) {
648 device_printf(sc->sc_dev,
649 "could not create tx DMA map\n");
650 goto fail;
651 }
652 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
653 }
654
655 /*
656 * Initialize tx ring.
657 */
658 for (i = 0; i < IPW_NTBD; i++) {
659 sbd = &sc->stbd_list[i];
660 sbd->bd = &sc->tbd_list[i];
661 sbd->type = IPW_SBD_TYPE_NOASSOC;
662 }
663
664 /*
665 * Pre-allocate rx buffers and DMA maps.
666 */
667 error = bus_dma_tag_create(sc->parent_dmat, 1, 0, BUS_SPACE_MAXADDR_32BIT,
668 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 0, NULL,
669 NULL, &sc->rxbuf_dmat);
670 if (error != 0) {
671 device_printf(sc->sc_dev, "could not create rx DMA tag\n");
672 goto fail;
673 }
674
675 for (i = 0; i < IPW_NRBD; i++) {
676 sbd = &sc->srbd_list[i];
677 sbuf = &sc->rx_sbuf_list[i];
678 sbd->bd = &sc->rbd_list[i];
679
680 sbuf->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
681 if (sbuf->m == NULL) {
682 device_printf(sc->sc_dev,
683 "could not allocate rx mbuf\n");
684 error = ENOMEM;
685 goto fail;
686 }
687
688 error = bus_dmamap_create(sc->rxbuf_dmat, 0, &sbuf->map);
689 if (error != 0) {
690 device_printf(sc->sc_dev,
691 "could not create rx DMA map\n");
692 goto fail;
693 }
694
695 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
696 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
697 &physaddr, 0);
698 if (error != 0) {
699 device_printf(sc->sc_dev,
700 "could not map rx DMA memory\n");
701 goto fail;
702 }
703
704 sbd->type = IPW_SBD_TYPE_DATA;
705 sbd->priv = sbuf;
706 sbd->bd->physaddr = htole32(physaddr);
707 sbd->bd->len = htole32(MCLBYTES);
708 }
709
710 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
711
712 return 0;
713
714 fail: ipw_release(sc);
715 return error;
716 }
717
718 static void
ipw_release(struct ipw_softc * sc)719 ipw_release(struct ipw_softc *sc)
720 {
721 struct ipw_soft_buf *sbuf;
722 int i;
723
724 if (sc->parent_dmat != NULL) {
725 bus_dma_tag_destroy(sc->parent_dmat);
726 }
727
728 if (sc->tbd_dmat != NULL) {
729 bus_dmamap_unload(sc->tbd_dmat, sc->tbd_map);
730 bus_dmamem_free(sc->tbd_dmat, sc->tbd_list, sc->tbd_map);
731 bus_dma_tag_destroy(sc->tbd_dmat);
732 }
733
734 if (sc->rbd_dmat != NULL) {
735 if (sc->rbd_list != NULL) {
736 bus_dmamap_unload(sc->rbd_dmat, sc->rbd_map);
737 bus_dmamem_free(sc->rbd_dmat, sc->rbd_list,
738 sc->rbd_map);
739 }
740 bus_dma_tag_destroy(sc->rbd_dmat);
741 }
742
743 if (sc->status_dmat != NULL) {
744 if (sc->status_list != NULL) {
745 bus_dmamap_unload(sc->status_dmat, sc->status_map);
746 bus_dmamem_free(sc->status_dmat, sc->status_list,
747 sc->status_map);
748 }
749 bus_dma_tag_destroy(sc->status_dmat);
750 }
751
752 for (i = 0; i < IPW_NTBD; i++)
753 ipw_release_sbd(sc, &sc->stbd_list[i]);
754
755 if (sc->cmd_dmat != NULL) {
756 bus_dmamap_destroy(sc->cmd_dmat, sc->cmd_map);
757 bus_dma_tag_destroy(sc->cmd_dmat);
758 }
759
760 if (sc->hdr_dmat != NULL) {
761 for (i = 0; i < IPW_NDATA; i++)
762 bus_dmamap_destroy(sc->hdr_dmat, sc->shdr_list[i].map);
763 bus_dma_tag_destroy(sc->hdr_dmat);
764 }
765
766 if (sc->txbuf_dmat != NULL) {
767 for (i = 0; i < IPW_NDATA; i++) {
768 bus_dmamap_destroy(sc->txbuf_dmat,
769 sc->tx_sbuf_list[i].map);
770 }
771 bus_dma_tag_destroy(sc->txbuf_dmat);
772 }
773
774 if (sc->rxbuf_dmat != NULL) {
775 for (i = 0; i < IPW_NRBD; i++) {
776 sbuf = &sc->rx_sbuf_list[i];
777 if (sbuf->m != NULL) {
778 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map,
779 BUS_DMASYNC_POSTREAD);
780 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
781 m_freem(sbuf->m);
782 }
783 bus_dmamap_destroy(sc->rxbuf_dmat, sbuf->map);
784 }
785 bus_dma_tag_destroy(sc->rxbuf_dmat);
786 }
787 }
788
789 static int
ipw_shutdown(device_t dev)790 ipw_shutdown(device_t dev)
791 {
792 struct ipw_softc *sc = device_get_softc(dev);
793
794 ipw_stop(sc);
795
796 return 0;
797 }
798
799 static int
ipw_suspend(device_t dev)800 ipw_suspend(device_t dev)
801 {
802 struct ipw_softc *sc = device_get_softc(dev);
803 struct ieee80211com *ic = &sc->sc_ic;
804
805 ieee80211_suspend_all(ic);
806 return 0;
807 }
808
809 static int
ipw_resume(device_t dev)810 ipw_resume(device_t dev)
811 {
812 struct ipw_softc *sc = device_get_softc(dev);
813 struct ieee80211com *ic = &sc->sc_ic;
814
815 pci_write_config(dev, 0x41, 0, 1);
816
817 ieee80211_resume_all(ic);
818 return 0;
819 }
820
821 static int
ipw_cvtrate(int ipwrate)822 ipw_cvtrate(int ipwrate)
823 {
824 switch (ipwrate) {
825 case IPW_RATE_DS1: return 2;
826 case IPW_RATE_DS2: return 4;
827 case IPW_RATE_DS5: return 11;
828 case IPW_RATE_DS11: return 22;
829 }
830 return 0;
831 }
832
833 /*
834 * The firmware automatically adapts the transmit speed. We report its current
835 * value here.
836 */
837 static void
ipw_media_status(struct ifnet * ifp,struct ifmediareq * imr)838 ipw_media_status(struct ifnet *ifp, struct ifmediareq *imr)
839 {
840 struct ieee80211vap *vap = ifp->if_softc;
841 struct ieee80211com *ic = vap->iv_ic;
842 struct ipw_softc *sc = ic->ic_softc;
843
844 /* read current transmission rate from adapter */
845 vap->iv_bss->ni_txrate = ipw_cvtrate(
846 ipw_read_table1(sc, IPW_INFO_CURRENT_TX_RATE) & 0xf);
847 ieee80211_media_status(ifp, imr);
848 }
849
850 static int
ipw_newstate(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)851 ipw_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
852 {
853 struct ipw_vap *ivp = IPW_VAP(vap);
854 struct ieee80211com *ic = vap->iv_ic;
855 struct ipw_softc *sc = ic->ic_softc;
856 enum ieee80211_state ostate;
857
858 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
859 ieee80211_state_name[vap->iv_state],
860 ieee80211_state_name[nstate], sc->flags));
861
862 ostate = vap->iv_state;
863 IEEE80211_UNLOCK(ic);
864
865 switch (nstate) {
866 case IEEE80211_S_RUN:
867 if (ic->ic_opmode == IEEE80211_M_IBSS) {
868 /*
869 * XXX when joining an ibss network we are called
870 * with a SCAN -> RUN transition on scan complete.
871 * Use that to call ipw_assoc. On completing the
872 * join we are then called again with an AUTH -> RUN
873 * transition and we want to do nothing. This is
874 * all totally bogus and needs to be redone.
875 */
876 if (ostate == IEEE80211_S_SCAN)
877 ipw_assoc(ic, vap);
878 }
879 break;
880
881 case IEEE80211_S_INIT:
882 if (sc->flags & IPW_FLAG_ASSOCIATED)
883 ipw_disassoc(ic, vap);
884 break;
885
886 case IEEE80211_S_AUTH:
887 /*
888 * Move to ASSOC state after the ipw_assoc() call. Firmware
889 * takes care of authentication, after the call we'll receive
890 * only an assoc response which would otherwise be discared
891 * if we are still in AUTH state.
892 */
893 nstate = IEEE80211_S_ASSOC;
894 ipw_assoc(ic, vap);
895 break;
896
897 case IEEE80211_S_ASSOC:
898 /*
899 * If we are not transitioning from AUTH then resend the
900 * association request.
901 */
902 if (ostate != IEEE80211_S_AUTH)
903 ipw_assoc(ic, vap);
904 break;
905
906 default:
907 break;
908 }
909 IEEE80211_LOCK(ic);
910 return ivp->newstate(vap, nstate, arg);
911 }
912
913 /*
914 * Read 16 bits at address 'addr' from the serial EEPROM.
915 */
916 static uint16_t
ipw_read_prom_word(struct ipw_softc * sc,uint8_t addr)917 ipw_read_prom_word(struct ipw_softc *sc, uint8_t addr)
918 {
919 uint32_t tmp;
920 uint16_t val;
921 int n;
922
923 /* clock C once before the first command */
924 IPW_EEPROM_CTL(sc, 0);
925 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
926 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
927 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
928
929 /* write start bit (1) */
930 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
931 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
932
933 /* write READ opcode (10) */
934 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D);
935 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_D | IPW_EEPROM_C);
936 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
937 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
938
939 /* write address A7-A0 */
940 for (n = 7; n >= 0; n--) {
941 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
942 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D));
943 IPW_EEPROM_CTL(sc, IPW_EEPROM_S |
944 (((addr >> n) & 1) << IPW_EEPROM_SHIFT_D) | IPW_EEPROM_C);
945 }
946
947 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
948
949 /* read data Q15-Q0 */
950 val = 0;
951 for (n = 15; n >= 0; n--) {
952 IPW_EEPROM_CTL(sc, IPW_EEPROM_S | IPW_EEPROM_C);
953 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
954 tmp = MEM_READ_4(sc, IPW_MEM_EEPROM_CTL);
955 val |= ((tmp & IPW_EEPROM_Q) >> IPW_EEPROM_SHIFT_Q) << n;
956 }
957
958 IPW_EEPROM_CTL(sc, 0);
959
960 /* clear Chip Select and clock C */
961 IPW_EEPROM_CTL(sc, IPW_EEPROM_S);
962 IPW_EEPROM_CTL(sc, 0);
963 IPW_EEPROM_CTL(sc, IPW_EEPROM_C);
964
965 return le16toh(val);
966 }
967
968 static uint16_t
ipw_read_chanmask(struct ipw_softc * sc)969 ipw_read_chanmask(struct ipw_softc *sc)
970 {
971 uint16_t val;
972
973 /* set supported .11b channels (read from EEPROM) */
974 if ((val = ipw_read_prom_word(sc, IPW_EEPROM_CHANNEL_LIST)) == 0)
975 val = 0x7ff; /* default to channels 1-11 */
976 val <<= 1;
977
978 return (val);
979 }
980
981 static void
ipw_rx_cmd_intr(struct ipw_softc * sc,struct ipw_soft_buf * sbuf)982 ipw_rx_cmd_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
983 {
984 struct ipw_cmd *cmd;
985
986 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
987
988 cmd = mtod(sbuf->m, struct ipw_cmd *);
989
990 DPRINTFN(9, ("cmd ack'ed %s(%u, %u, %u, %u, %u)\n",
991 ipw_cmdname(le32toh(cmd->type)), le32toh(cmd->type),
992 le32toh(cmd->subtype), le32toh(cmd->seq), le32toh(cmd->len),
993 le32toh(cmd->status)));
994
995 sc->flags &= ~IPW_FLAG_BUSY;
996 wakeup(sc);
997 }
998
999 static void
ipw_rx_newstate_intr(struct ipw_softc * sc,struct ipw_soft_buf * sbuf)1000 ipw_rx_newstate_intr(struct ipw_softc *sc, struct ipw_soft_buf *sbuf)
1001 {
1002 #define IEEESTATE(vap) ieee80211_state_name[vap->iv_state]
1003 struct ieee80211com *ic = &sc->sc_ic;
1004 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1005 uint32_t state;
1006
1007 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1008
1009 state = le32toh(*mtod(sbuf->m, uint32_t *));
1010
1011 switch (state) {
1012 case IPW_STATE_ASSOCIATED:
1013 DPRINTFN(2, ("Association succeeded (%s flags 0x%x)\n",
1014 IEEESTATE(vap), sc->flags));
1015 /* XXX suppress state change in case the fw auto-associates */
1016 if ((sc->flags & IPW_FLAG_ASSOCIATING) == 0) {
1017 DPRINTF(("Unexpected association (%s, flags 0x%x)\n",
1018 IEEESTATE(vap), sc->flags));
1019 break;
1020 }
1021 sc->flags &= ~IPW_FLAG_ASSOCIATING;
1022 sc->flags |= IPW_FLAG_ASSOCIATED;
1023 break;
1024
1025 case IPW_STATE_SCANNING:
1026 DPRINTFN(3, ("Scanning (%s flags 0x%x)\n",
1027 IEEESTATE(vap), sc->flags));
1028 /*
1029 * NB: Check driver state for association on assoc
1030 * loss as the firmware will immediately start to
1031 * scan and we would treat it as a beacon miss if
1032 * we checked the 802.11 layer state.
1033 */
1034 if (sc->flags & IPW_FLAG_ASSOCIATED) {
1035 IPW_UNLOCK(sc);
1036 /* XXX probably need to issue disassoc to fw */
1037 ieee80211_beacon_miss(ic);
1038 IPW_LOCK(sc);
1039 }
1040 break;
1041
1042 case IPW_STATE_SCAN_COMPLETE:
1043 /*
1044 * XXX For some reason scan requests generate scan
1045 * started + scan done events before any traffic is
1046 * received (e.g. probe response frames). We work
1047 * around this by marking the HACK flag and skipping
1048 * the first scan complete event.
1049 */
1050 DPRINTFN(3, ("Scan complete (%s flags 0x%x)\n",
1051 IEEESTATE(vap), sc->flags));
1052 if (sc->flags & IPW_FLAG_HACK) {
1053 sc->flags &= ~IPW_FLAG_HACK;
1054 break;
1055 }
1056 if (sc->flags & IPW_FLAG_SCANNING) {
1057 IPW_UNLOCK(sc);
1058 ieee80211_scan_done(vap);
1059 IPW_LOCK(sc);
1060 sc->flags &= ~IPW_FLAG_SCANNING;
1061 sc->sc_scan_timer = 0;
1062 }
1063 break;
1064
1065 case IPW_STATE_ASSOCIATION_LOST:
1066 DPRINTFN(2, ("Association lost (%s flags 0x%x)\n",
1067 IEEESTATE(vap), sc->flags));
1068 sc->flags &= ~(IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1069 if (vap->iv_state == IEEE80211_S_RUN) {
1070 IPW_UNLOCK(sc);
1071 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1072 IPW_LOCK(sc);
1073 }
1074 break;
1075
1076 case IPW_STATE_DISABLED:
1077 /* XXX? is this right? */
1078 sc->flags &= ~(IPW_FLAG_HACK | IPW_FLAG_SCANNING |
1079 IPW_FLAG_ASSOCIATING | IPW_FLAG_ASSOCIATED);
1080 DPRINTFN(2, ("Firmware disabled (%s flags 0x%x)\n",
1081 IEEESTATE(vap), sc->flags));
1082 break;
1083
1084 case IPW_STATE_RADIO_DISABLED:
1085 device_printf(sc->sc_dev, "radio turned off\n");
1086 ieee80211_notify_radio(ic, 0);
1087 ipw_stop_locked(sc);
1088 /* XXX start polling thread to detect radio on */
1089 break;
1090
1091 default:
1092 DPRINTFN(2, ("%s: unhandled state %u %s flags 0x%x\n",
1093 __func__, state, IEEESTATE(vap), sc->flags));
1094 break;
1095 }
1096 #undef IEEESTATE
1097 }
1098
1099 /*
1100 * Set driver state for current channel.
1101 */
1102 static void
ipw_setcurchan(struct ipw_softc * sc,struct ieee80211_channel * chan)1103 ipw_setcurchan(struct ipw_softc *sc, struct ieee80211_channel *chan)
1104 {
1105 struct ieee80211com *ic = &sc->sc_ic;
1106
1107 ic->ic_curchan = chan;
1108 ieee80211_radiotap_chan_change(ic);
1109 }
1110
1111 /*
1112 * XXX: Hack to set the current channel to the value advertised in beacons or
1113 * probe responses. Only used during AP detection.
1114 */
1115 static void
ipw_fix_channel(struct ipw_softc * sc,struct mbuf * m)1116 ipw_fix_channel(struct ipw_softc *sc, struct mbuf *m)
1117 {
1118 struct ieee80211com *ic = &sc->sc_ic;
1119 struct ieee80211_channel *c;
1120 struct ieee80211_frame *wh;
1121 uint8_t subtype;
1122 uint8_t *frm, *efrm;
1123
1124 wh = mtod(m, struct ieee80211_frame *);
1125
1126 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT)
1127 return;
1128
1129 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
1130
1131 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON &&
1132 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP)
1133 return;
1134
1135 /* XXX use ieee80211_parse_beacon */
1136 frm = (uint8_t *)(wh + 1);
1137 efrm = mtod(m, uint8_t *) + m->m_len;
1138
1139 frm += 12; /* skip tstamp, bintval and capinfo fields */
1140 while (frm < efrm) {
1141 if (*frm == IEEE80211_ELEMID_DSPARMS)
1142 #if IEEE80211_CHAN_MAX < 255
1143 if (frm[2] <= IEEE80211_CHAN_MAX)
1144 #endif
1145 {
1146 DPRINTF(("Fixing channel to %d\n", frm[2]));
1147 c = ieee80211_find_channel(ic,
1148 ieee80211_ieee2mhz(frm[2], 0),
1149 IEEE80211_CHAN_B);
1150 if (c == NULL)
1151 c = &ic->ic_channels[0];
1152 ipw_setcurchan(sc, c);
1153 }
1154
1155 frm += frm[1] + 2;
1156 }
1157 }
1158
1159 static void
ipw_rx_data_intr(struct ipw_softc * sc,struct ipw_status * status,struct ipw_soft_bd * sbd,struct ipw_soft_buf * sbuf)1160 ipw_rx_data_intr(struct ipw_softc *sc, struct ipw_status *status,
1161 struct ipw_soft_bd *sbd, struct ipw_soft_buf *sbuf)
1162 {
1163 struct epoch_tracker et;
1164 struct ieee80211com *ic = &sc->sc_ic;
1165 struct mbuf *mnew, *m;
1166 struct ieee80211_node *ni;
1167 bus_addr_t physaddr;
1168 int error;
1169 int8_t rssi, nf;
1170
1171 DPRINTFN(5, ("received frame len=%u, rssi=%u\n", le32toh(status->len),
1172 status->rssi));
1173
1174 if (le32toh(status->len) < sizeof (struct ieee80211_frame_min) ||
1175 le32toh(status->len) > MCLBYTES)
1176 return;
1177
1178 /*
1179 * Try to allocate a new mbuf for this ring element and load it before
1180 * processing the current mbuf. If the ring element cannot be loaded,
1181 * drop the received packet and reuse the old mbuf. In the unlikely
1182 * case that the old mbuf can't be reloaded either, explicitly panic.
1183 */
1184 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1185 if (mnew == NULL) {
1186 counter_u64_add(ic->ic_ierrors, 1);
1187 return;
1188 }
1189
1190 bus_dmamap_sync(sc->rxbuf_dmat, sbuf->map, BUS_DMASYNC_POSTREAD);
1191 bus_dmamap_unload(sc->rxbuf_dmat, sbuf->map);
1192
1193 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map, mtod(mnew, void *),
1194 MCLBYTES, ipw_dma_map_addr, &physaddr, 0);
1195 if (error != 0) {
1196 m_freem(mnew);
1197
1198 /* try to reload the old mbuf */
1199 error = bus_dmamap_load(sc->rxbuf_dmat, sbuf->map,
1200 mtod(sbuf->m, void *), MCLBYTES, ipw_dma_map_addr,
1201 &physaddr, 0);
1202 if (error != 0) {
1203 /* very unlikely that it will fail... */
1204 panic("%s: could not load old rx mbuf",
1205 device_get_name(sc->sc_dev));
1206 }
1207 counter_u64_add(ic->ic_ierrors, 1);
1208 return;
1209 }
1210
1211 /*
1212 * New mbuf successfully loaded, update Rx ring and continue
1213 * processing.
1214 */
1215 m = sbuf->m;
1216 sbuf->m = mnew;
1217 sbd->bd->physaddr = htole32(physaddr);
1218 m->m_pkthdr.len = m->m_len = le32toh(status->len);
1219
1220 rssi = status->rssi + IPW_RSSI_TO_DBM;
1221 nf = -95;
1222 if (ieee80211_radiotap_active(ic)) {
1223 struct ipw_rx_radiotap_header *tap = &sc->sc_rxtap;
1224
1225 tap->wr_flags = 0;
1226 tap->wr_antsignal = rssi;
1227 tap->wr_antnoise = nf;
1228 }
1229
1230 if (sc->flags & IPW_FLAG_SCANNING)
1231 ipw_fix_channel(sc, m);
1232
1233 IPW_UNLOCK(sc);
1234 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1235 NET_EPOCH_ENTER(et);
1236 if (ni != NULL) {
1237 (void) ieee80211_input(ni, m, rssi - nf, nf);
1238 ieee80211_free_node(ni);
1239 } else
1240 (void) ieee80211_input_all(ic, m, rssi - nf, nf);
1241 NET_EPOCH_EXIT(et);
1242 IPW_LOCK(sc);
1243
1244 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1245 }
1246
1247 static void
ipw_rx_intr(struct ipw_softc * sc)1248 ipw_rx_intr(struct ipw_softc *sc)
1249 {
1250 struct ipw_status *status;
1251 struct ipw_soft_bd *sbd;
1252 struct ipw_soft_buf *sbuf;
1253 uint32_t r, i;
1254
1255 if (!(sc->flags & IPW_FLAG_FW_INITED))
1256 return;
1257
1258 r = CSR_READ_4(sc, IPW_CSR_RX_READ);
1259
1260 bus_dmamap_sync(sc->status_dmat, sc->status_map, BUS_DMASYNC_POSTREAD);
1261
1262 for (i = (sc->rxcur + 1) % IPW_NRBD; i != r; i = (i + 1) % IPW_NRBD) {
1263 status = &sc->status_list[i];
1264 sbd = &sc->srbd_list[i];
1265 sbuf = sbd->priv;
1266
1267 switch (le16toh(status->code) & 0xf) {
1268 case IPW_STATUS_CODE_COMMAND:
1269 ipw_rx_cmd_intr(sc, sbuf);
1270 break;
1271
1272 case IPW_STATUS_CODE_NEWSTATE:
1273 ipw_rx_newstate_intr(sc, sbuf);
1274 break;
1275
1276 case IPW_STATUS_CODE_DATA_802_3:
1277 case IPW_STATUS_CODE_DATA_802_11:
1278 ipw_rx_data_intr(sc, status, sbd, sbuf);
1279 break;
1280
1281 case IPW_STATUS_CODE_NOTIFICATION:
1282 DPRINTFN(2, ("notification status, len %u flags 0x%x\n",
1283 le32toh(status->len), status->flags));
1284 /* XXX maybe drive state machine AUTH->ASSOC? */
1285 break;
1286
1287 default:
1288 device_printf(sc->sc_dev, "unexpected status code %u\n",
1289 le16toh(status->code));
1290 }
1291
1292 /* firmware was killed, stop processing received frames */
1293 if (!(sc->flags & IPW_FLAG_FW_INITED))
1294 return;
1295
1296 sbd->bd->flags = 0;
1297 }
1298
1299 bus_dmamap_sync(sc->rbd_dmat, sc->rbd_map, BUS_DMASYNC_PREWRITE);
1300
1301 /* kick the firmware */
1302 sc->rxcur = (r == 0) ? IPW_NRBD - 1 : r - 1;
1303 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
1304 }
1305
1306 static void
ipw_release_sbd(struct ipw_softc * sc,struct ipw_soft_bd * sbd)1307 ipw_release_sbd(struct ipw_softc *sc, struct ipw_soft_bd *sbd)
1308 {
1309 struct ipw_soft_hdr *shdr;
1310 struct ipw_soft_buf *sbuf;
1311
1312 switch (sbd->type) {
1313 case IPW_SBD_TYPE_COMMAND:
1314 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map,
1315 BUS_DMASYNC_POSTWRITE);
1316 bus_dmamap_unload(sc->cmd_dmat, sc->cmd_map);
1317 break;
1318
1319 case IPW_SBD_TYPE_HEADER:
1320 shdr = sbd->priv;
1321 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_POSTWRITE);
1322 bus_dmamap_unload(sc->hdr_dmat, shdr->map);
1323 SLIST_INSERT_HEAD(&sc->free_shdr, shdr, next);
1324 break;
1325
1326 case IPW_SBD_TYPE_DATA:
1327 sbuf = sbd->priv;
1328 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map,
1329 BUS_DMASYNC_POSTWRITE);
1330 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1331 SLIST_INSERT_HEAD(&sc->free_sbuf, sbuf, next);
1332
1333 ieee80211_tx_complete(sbuf->ni, sbuf->m, 0/*XXX*/);
1334
1335 sc->sc_tx_timer = 0;
1336 break;
1337 }
1338
1339 sbd->type = IPW_SBD_TYPE_NOASSOC;
1340 }
1341
1342 static void
ipw_tx_intr(struct ipw_softc * sc)1343 ipw_tx_intr(struct ipw_softc *sc)
1344 {
1345 struct ipw_soft_bd *sbd;
1346 uint32_t r, i;
1347
1348 if (!(sc->flags & IPW_FLAG_FW_INITED))
1349 return;
1350
1351 r = CSR_READ_4(sc, IPW_CSR_TX_READ);
1352
1353 for (i = (sc->txold + 1) % IPW_NTBD; i != r; i = (i + 1) % IPW_NTBD) {
1354 sbd = &sc->stbd_list[i];
1355 ipw_release_sbd(sc, sbd);
1356 sc->txfree++;
1357 }
1358
1359 /* remember what the firmware has processed */
1360 sc->txold = (r == 0) ? IPW_NTBD - 1 : r - 1;
1361
1362 ipw_start(sc);
1363 }
1364
1365 static void
ipw_fatal_error_intr(struct ipw_softc * sc)1366 ipw_fatal_error_intr(struct ipw_softc *sc)
1367 {
1368 struct ieee80211com *ic = &sc->sc_ic;
1369 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1370
1371 device_printf(sc->sc_dev, "firmware error\n");
1372 if (vap != NULL) {
1373 IPW_UNLOCK(sc);
1374 ieee80211_cancel_scan(vap);
1375 IPW_LOCK(sc);
1376 }
1377 ieee80211_runtask(ic, &sc->sc_init_task);
1378 }
1379
1380 static void
ipw_intr(void * arg)1381 ipw_intr(void *arg)
1382 {
1383 struct ipw_softc *sc = arg;
1384 uint32_t r;
1385
1386 IPW_LOCK(sc);
1387
1388 r = CSR_READ_4(sc, IPW_CSR_INTR);
1389 if (r == 0 || r == 0xffffffff)
1390 goto done;
1391
1392 /* disable interrupts */
1393 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1394
1395 /* acknowledge all interrupts */
1396 CSR_WRITE_4(sc, IPW_CSR_INTR, r);
1397
1398 if (r & (IPW_INTR_FATAL_ERROR | IPW_INTR_PARITY_ERROR)) {
1399 ipw_fatal_error_intr(sc);
1400 goto done;
1401 }
1402
1403 if (r & IPW_INTR_FW_INIT_DONE)
1404 wakeup(sc);
1405
1406 if (r & IPW_INTR_RX_TRANSFER)
1407 ipw_rx_intr(sc);
1408
1409 if (r & IPW_INTR_TX_TRANSFER)
1410 ipw_tx_intr(sc);
1411
1412 /* re-enable interrupts */
1413 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1414 done:
1415 IPW_UNLOCK(sc);
1416 }
1417
1418 static void
ipw_dma_map_addr(void * arg,bus_dma_segment_t * segs,int nseg,int error)1419 ipw_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1420 {
1421 if (error != 0)
1422 return;
1423
1424 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
1425
1426 *(bus_addr_t *)arg = segs[0].ds_addr;
1427 }
1428
1429 static const char *
ipw_cmdname(int cmd)1430 ipw_cmdname(int cmd)
1431 {
1432 static const struct {
1433 int cmd;
1434 const char *name;
1435 } cmds[] = {
1436 { IPW_CMD_ADD_MULTICAST, "ADD_MULTICAST" },
1437 { IPW_CMD_BROADCAST_SCAN, "BROADCAST_SCAN" },
1438 { IPW_CMD_DISABLE, "DISABLE" },
1439 { IPW_CMD_DISABLE_PHY, "DISABLE_PHY" },
1440 { IPW_CMD_ENABLE, "ENABLE" },
1441 { IPW_CMD_PREPARE_POWER_DOWN, "PREPARE_POWER_DOWN" },
1442 { IPW_CMD_SET_BASIC_TX_RATES, "SET_BASIC_TX_RATES" },
1443 { IPW_CMD_SET_BEACON_INTERVAL, "SET_BEACON_INTERVAL" },
1444 { IPW_CMD_SET_CHANNEL, "SET_CHANNEL" },
1445 { IPW_CMD_SET_CONFIGURATION, "SET_CONFIGURATION" },
1446 { IPW_CMD_SET_DESIRED_BSSID, "SET_DESIRED_BSSID" },
1447 { IPW_CMD_SET_ESSID, "SET_ESSID" },
1448 { IPW_CMD_SET_FRAG_THRESHOLD, "SET_FRAG_THRESHOLD" },
1449 { IPW_CMD_SET_MAC_ADDRESS, "SET_MAC_ADDRESS" },
1450 { IPW_CMD_SET_MANDATORY_BSSID, "SET_MANDATORY_BSSID" },
1451 { IPW_CMD_SET_MODE, "SET_MODE" },
1452 { IPW_CMD_SET_MSDU_TX_RATES, "SET_MSDU_TX_RATES" },
1453 { IPW_CMD_SET_POWER_MODE, "SET_POWER_MODE" },
1454 { IPW_CMD_SET_RTS_THRESHOLD, "SET_RTS_THRESHOLD" },
1455 { IPW_CMD_SET_SCAN_OPTIONS, "SET_SCAN_OPTIONS" },
1456 { IPW_CMD_SET_SECURITY_INFO, "SET_SECURITY_INFO" },
1457 { IPW_CMD_SET_TX_POWER_INDEX, "SET_TX_POWER_INDEX" },
1458 { IPW_CMD_SET_TX_RATES, "SET_TX_RATES" },
1459 { IPW_CMD_SET_WEP_FLAGS, "SET_WEP_FLAGS" },
1460 { IPW_CMD_SET_WEP_KEY, "SET_WEP_KEY" },
1461 { IPW_CMD_SET_WEP_KEY_INDEX, "SET_WEP_KEY_INDEX" },
1462 { IPW_CMD_SET_WPA_IE, "SET_WPA_IE" },
1463
1464 };
1465 static char buf[12];
1466 int i;
1467
1468 for (i = 0; i < nitems(cmds); i++)
1469 if (cmds[i].cmd == cmd)
1470 return cmds[i].name;
1471 snprintf(buf, sizeof(buf), "%u", cmd);
1472 return buf;
1473 }
1474
1475 /*
1476 * Send a command to the firmware and wait for the acknowledgement.
1477 */
1478 static int
ipw_cmd(struct ipw_softc * sc,uint32_t type,void * data,uint32_t len)1479 ipw_cmd(struct ipw_softc *sc, uint32_t type, void *data, uint32_t len)
1480 {
1481 struct ipw_soft_bd *sbd;
1482 bus_addr_t physaddr;
1483 int error;
1484
1485 IPW_LOCK_ASSERT(sc);
1486
1487 if (sc->flags & IPW_FLAG_BUSY) {
1488 device_printf(sc->sc_dev, "%s: %s not sent, busy\n",
1489 __func__, ipw_cmdname(type));
1490 return EAGAIN;
1491 }
1492 sc->flags |= IPW_FLAG_BUSY;
1493
1494 sbd = &sc->stbd_list[sc->txcur];
1495
1496 error = bus_dmamap_load(sc->cmd_dmat, sc->cmd_map, &sc->cmd,
1497 sizeof (struct ipw_cmd), ipw_dma_map_addr, &physaddr, 0);
1498 if (error != 0) {
1499 device_printf(sc->sc_dev, "could not map command DMA memory\n");
1500 sc->flags &= ~IPW_FLAG_BUSY;
1501 return error;
1502 }
1503
1504 sc->cmd.type = htole32(type);
1505 sc->cmd.subtype = 0;
1506 sc->cmd.len = htole32(len);
1507 sc->cmd.seq = 0;
1508 memcpy(sc->cmd.data, data, len);
1509
1510 sbd->type = IPW_SBD_TYPE_COMMAND;
1511 sbd->bd->physaddr = htole32(physaddr);
1512 sbd->bd->len = htole32(sizeof (struct ipw_cmd));
1513 sbd->bd->nfrag = 1;
1514 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_COMMAND |
1515 IPW_BD_FLAG_TX_LAST_FRAGMENT;
1516
1517 bus_dmamap_sync(sc->cmd_dmat, sc->cmd_map, BUS_DMASYNC_PREWRITE);
1518 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1519
1520 #ifdef IPW_DEBUG
1521 if (ipw_debug >= 4) {
1522 printf("sending %s(%u, %u, %u, %u)", ipw_cmdname(type), type,
1523 0, 0, len);
1524 /* Print the data buffer in the higher debug level */
1525 if (ipw_debug >= 9 && len > 0) {
1526 printf(" data: 0x");
1527 for (int i = 1; i <= len; i++)
1528 printf("%1D", (u_char *)data + len - i, "");
1529 }
1530 printf("\n");
1531 }
1532 #endif
1533
1534 /* kick firmware */
1535 sc->txfree--;
1536 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1537 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1538
1539 /* wait at most one second for command to complete */
1540 error = msleep(sc, &sc->sc_mtx, 0, "ipwcmd", hz);
1541 if (error != 0) {
1542 device_printf(sc->sc_dev, "%s: %s failed, timeout (error %u)\n",
1543 __func__, ipw_cmdname(type), error);
1544 sc->flags &= ~IPW_FLAG_BUSY;
1545 return (error);
1546 }
1547 return (0);
1548 }
1549
1550 static int
ipw_tx_start(struct ipw_softc * sc,struct mbuf * m0,struct ieee80211_node * ni)1551 ipw_tx_start(struct ipw_softc *sc, struct mbuf *m0, struct ieee80211_node *ni)
1552 {
1553 struct ieee80211com *ic = &sc->sc_ic;
1554 struct ieee80211vap *vap = ni->ni_vap;
1555 struct ieee80211_frame *wh;
1556 struct ipw_soft_bd *sbd;
1557 struct ipw_soft_hdr *shdr;
1558 struct ipw_soft_buf *sbuf;
1559 struct ieee80211_key *k;
1560 struct mbuf *mnew;
1561 bus_dma_segment_t segs[IPW_MAX_NSEG];
1562 bus_addr_t physaddr;
1563 int nsegs, error, i;
1564
1565 wh = mtod(m0, struct ieee80211_frame *);
1566
1567 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1568 k = ieee80211_crypto_encap(ni, m0);
1569 if (k == NULL) {
1570 m_freem(m0);
1571 return ENOBUFS;
1572 }
1573 /* packet header may have moved, reset our local pointer */
1574 wh = mtod(m0, struct ieee80211_frame *);
1575 }
1576
1577 if (ieee80211_radiotap_active_vap(vap)) {
1578 struct ipw_tx_radiotap_header *tap = &sc->sc_txtap;
1579
1580 tap->wt_flags = 0;
1581
1582 ieee80211_radiotap_tx(vap, m0);
1583 }
1584
1585 shdr = SLIST_FIRST(&sc->free_shdr);
1586 sbuf = SLIST_FIRST(&sc->free_sbuf);
1587 KASSERT(shdr != NULL && sbuf != NULL, ("empty sw hdr/buf pool"));
1588
1589 shdr->hdr.type = htole32(IPW_HDR_TYPE_SEND);
1590 shdr->hdr.subtype = 0;
1591 shdr->hdr.encrypted = (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) ? 1 : 0;
1592 shdr->hdr.encrypt = 0;
1593 shdr->hdr.keyidx = 0;
1594 shdr->hdr.keysz = 0;
1595 shdr->hdr.fragmentsz = 0;
1596 IEEE80211_ADDR_COPY(shdr->hdr.src_addr, wh->i_addr2);
1597 if (ic->ic_opmode == IEEE80211_M_STA)
1598 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr3);
1599 else
1600 IEEE80211_ADDR_COPY(shdr->hdr.dst_addr, wh->i_addr1);
1601
1602 /* trim IEEE802.11 header */
1603 m_adj(m0, sizeof (struct ieee80211_frame));
1604
1605 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0, segs,
1606 &nsegs, 0);
1607 if (error != 0 && error != EFBIG) {
1608 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1609 error);
1610 m_freem(m0);
1611 return error;
1612 }
1613 if (error != 0) {
1614 mnew = m_defrag(m0, M_NOWAIT);
1615 if (mnew == NULL) {
1616 device_printf(sc->sc_dev,
1617 "could not defragment mbuf\n");
1618 m_freem(m0);
1619 return ENOBUFS;
1620 }
1621 m0 = mnew;
1622
1623 error = bus_dmamap_load_mbuf_sg(sc->txbuf_dmat, sbuf->map, m0,
1624 segs, &nsegs, 0);
1625 if (error != 0) {
1626 device_printf(sc->sc_dev,
1627 "could not map mbuf (error %d)\n", error);
1628 m_freem(m0);
1629 return error;
1630 }
1631 }
1632
1633 error = bus_dmamap_load(sc->hdr_dmat, shdr->map, &shdr->hdr,
1634 sizeof (struct ipw_hdr), ipw_dma_map_addr, &physaddr, 0);
1635 if (error != 0) {
1636 device_printf(sc->sc_dev, "could not map header DMA memory\n");
1637 bus_dmamap_unload(sc->txbuf_dmat, sbuf->map);
1638 m_freem(m0);
1639 return error;
1640 }
1641
1642 SLIST_REMOVE_HEAD(&sc->free_sbuf, next);
1643 SLIST_REMOVE_HEAD(&sc->free_shdr, next);
1644
1645 sbd = &sc->stbd_list[sc->txcur];
1646 sbd->type = IPW_SBD_TYPE_HEADER;
1647 sbd->priv = shdr;
1648 sbd->bd->physaddr = htole32(physaddr);
1649 sbd->bd->len = htole32(sizeof (struct ipw_hdr));
1650 sbd->bd->nfrag = 1 + nsegs;
1651 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3 |
1652 IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1653
1654 DPRINTFN(5, ("sending tx hdr (%u, %u, %u, %u, %6D, %6D)\n",
1655 shdr->hdr.type, shdr->hdr.subtype, shdr->hdr.encrypted,
1656 shdr->hdr.encrypt, shdr->hdr.src_addr, ":", shdr->hdr.dst_addr,
1657 ":"));
1658
1659 sc->txfree--;
1660 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1661
1662 sbuf->m = m0;
1663 sbuf->ni = ni;
1664
1665 for (i = 0; i < nsegs; i++) {
1666 sbd = &sc->stbd_list[sc->txcur];
1667
1668 sbd->bd->physaddr = htole32(segs[i].ds_addr);
1669 sbd->bd->len = htole32(segs[i].ds_len);
1670 sbd->bd->nfrag = 0;
1671 sbd->bd->flags = IPW_BD_FLAG_TX_FRAME_802_3;
1672 if (i == nsegs - 1) {
1673 sbd->type = IPW_SBD_TYPE_DATA;
1674 sbd->priv = sbuf;
1675 sbd->bd->flags |= IPW_BD_FLAG_TX_LAST_FRAGMENT;
1676 } else {
1677 sbd->type = IPW_SBD_TYPE_NOASSOC;
1678 sbd->bd->flags |= IPW_BD_FLAG_TX_NOT_LAST_FRAGMENT;
1679 }
1680
1681 DPRINTFN(5, ("sending fragment (%d)\n", i));
1682
1683 sc->txfree--;
1684 sc->txcur = (sc->txcur + 1) % IPW_NTBD;
1685 }
1686
1687 bus_dmamap_sync(sc->hdr_dmat, shdr->map, BUS_DMASYNC_PREWRITE);
1688 bus_dmamap_sync(sc->txbuf_dmat, sbuf->map, BUS_DMASYNC_PREWRITE);
1689 bus_dmamap_sync(sc->tbd_dmat, sc->tbd_map, BUS_DMASYNC_PREWRITE);
1690
1691 /* kick firmware */
1692 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
1693
1694 return 0;
1695 }
1696
1697 static int
ipw_raw_xmit(struct ieee80211_node * ni,struct mbuf * m,const struct ieee80211_bpf_params * params)1698 ipw_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1699 const struct ieee80211_bpf_params *params)
1700 {
1701 /* no support; just discard */
1702 m_freem(m);
1703 ieee80211_free_node(ni);
1704 return 0;
1705 }
1706
1707 static int
ipw_transmit(struct ieee80211com * ic,struct mbuf * m)1708 ipw_transmit(struct ieee80211com *ic, struct mbuf *m)
1709 {
1710 struct ipw_softc *sc = ic->ic_softc;
1711 int error;
1712
1713 IPW_LOCK(sc);
1714 if ((sc->flags & IPW_FLAG_RUNNING) == 0) {
1715 IPW_UNLOCK(sc);
1716 return (ENXIO);
1717 }
1718 error = mbufq_enqueue(&sc->sc_snd, m);
1719 if (error) {
1720 IPW_UNLOCK(sc);
1721 return (error);
1722 }
1723 ipw_start(sc);
1724 IPW_UNLOCK(sc);
1725 return (0);
1726 }
1727
1728 static void
ipw_start(struct ipw_softc * sc)1729 ipw_start(struct ipw_softc *sc)
1730 {
1731 struct ieee80211_node *ni;
1732 struct mbuf *m;
1733
1734 IPW_LOCK_ASSERT(sc);
1735
1736 while (sc->txfree >= 1 + IPW_MAX_NSEG &&
1737 (m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
1738 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1739 if (ipw_tx_start(sc, m, ni) != 0) {
1740 if_inc_counter(ni->ni_vap->iv_ifp,
1741 IFCOUNTER_OERRORS, 1);
1742 ieee80211_free_node(ni);
1743 break;
1744 }
1745 /* start watchdog timer */
1746 sc->sc_tx_timer = 5;
1747 }
1748 }
1749
1750 static void
ipw_watchdog(void * arg)1751 ipw_watchdog(void *arg)
1752 {
1753 struct ipw_softc *sc = arg;
1754 struct ieee80211com *ic = &sc->sc_ic;
1755
1756 IPW_LOCK_ASSERT(sc);
1757
1758 if (sc->sc_tx_timer > 0) {
1759 if (--sc->sc_tx_timer == 0) {
1760 device_printf(sc->sc_dev, "device timeout\n");
1761 counter_u64_add(ic->ic_oerrors, 1);
1762 taskqueue_enqueue(taskqueue_swi, &sc->sc_init_task);
1763 }
1764 }
1765 if (sc->sc_scan_timer > 0) {
1766 if (--sc->sc_scan_timer == 0) {
1767 DPRINTFN(3, ("Scan timeout\n"));
1768 /* End the scan */
1769 if (sc->flags & IPW_FLAG_SCANNING) {
1770 IPW_UNLOCK(sc);
1771 ieee80211_scan_done(TAILQ_FIRST(&ic->ic_vaps));
1772 IPW_LOCK(sc);
1773 sc->flags &= ~IPW_FLAG_SCANNING;
1774 }
1775 }
1776 }
1777 if (sc->flags & IPW_FLAG_RUNNING)
1778 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
1779 }
1780
1781 static void
ipw_parent(struct ieee80211com * ic)1782 ipw_parent(struct ieee80211com *ic)
1783 {
1784 struct ipw_softc *sc = ic->ic_softc;
1785 int startall = 0;
1786
1787 IPW_LOCK(sc);
1788 if (ic->ic_nrunning > 0) {
1789 if (!(sc->flags & IPW_FLAG_RUNNING)) {
1790 ipw_init_locked(sc);
1791 startall = 1;
1792 }
1793 } else if (sc->flags & IPW_FLAG_RUNNING)
1794 ipw_stop_locked(sc);
1795 IPW_UNLOCK(sc);
1796 if (startall)
1797 ieee80211_start_all(ic);
1798 }
1799
1800 static void
ipw_stop_master(struct ipw_softc * sc)1801 ipw_stop_master(struct ipw_softc *sc)
1802 {
1803 uint32_t tmp;
1804 int ntries;
1805
1806 /* disable interrupts */
1807 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, 0);
1808
1809 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_STOP_MASTER);
1810 for (ntries = 0; ntries < 50; ntries++) {
1811 if (CSR_READ_4(sc, IPW_CSR_RST) & IPW_RST_MASTER_DISABLED)
1812 break;
1813 DELAY(10);
1814 }
1815 if (ntries == 50)
1816 device_printf(sc->sc_dev, "timeout waiting for master\n");
1817
1818 tmp = CSR_READ_4(sc, IPW_CSR_RST);
1819 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_PRINCETON_RESET);
1820
1821 /* Clear all flags except the following */
1822 sc->flags &= IPW_FLAG_HAS_RADIO_SWITCH;
1823 }
1824
1825 static int
ipw_reset(struct ipw_softc * sc)1826 ipw_reset(struct ipw_softc *sc)
1827 {
1828 uint32_t tmp;
1829 int ntries;
1830
1831 ipw_stop_master(sc);
1832
1833 /* move adapter to D0 state */
1834 tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1835 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1836
1837 /* wait for clock stabilization */
1838 for (ntries = 0; ntries < 1000; ntries++) {
1839 if (CSR_READ_4(sc, IPW_CSR_CTL) & IPW_CTL_CLOCK_READY)
1840 break;
1841 DELAY(200);
1842 }
1843 if (ntries == 1000)
1844 return EIO;
1845
1846 tmp = CSR_READ_4(sc, IPW_CSR_RST);
1847 CSR_WRITE_4(sc, IPW_CSR_RST, tmp | IPW_RST_SW_RESET);
1848
1849 DELAY(10);
1850
1851 tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1852 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_INIT);
1853
1854 return 0;
1855 }
1856
1857 static int
ipw_waitfordisable(struct ipw_softc * sc,int waitfor)1858 ipw_waitfordisable(struct ipw_softc *sc, int waitfor)
1859 {
1860 int ms = hz < 1000 ? 1 : hz/10;
1861 int i, error;
1862
1863 for (i = 0; i < 100; i++) {
1864 if (ipw_read_table1(sc, IPW_INFO_CARD_DISABLED) == waitfor)
1865 return 0;
1866 error = msleep(sc, &sc->sc_mtx, PCATCH, __func__, ms);
1867 if (error == 0 || error != EWOULDBLOCK)
1868 return 0;
1869 }
1870 DPRINTF(("%s: timeout waiting for %s\n",
1871 __func__, waitfor ? "disable" : "enable"));
1872 return ETIMEDOUT;
1873 }
1874
1875 static int
ipw_enable(struct ipw_softc * sc)1876 ipw_enable(struct ipw_softc *sc)
1877 {
1878 int error;
1879
1880 if ((sc->flags & IPW_FLAG_ENABLED) == 0) {
1881 DPRINTF(("Enable adapter\n"));
1882 error = ipw_cmd(sc, IPW_CMD_ENABLE, NULL, 0);
1883 if (error != 0)
1884 return error;
1885 error = ipw_waitfordisable(sc, 0);
1886 if (error != 0)
1887 return error;
1888 sc->flags |= IPW_FLAG_ENABLED;
1889 }
1890 return 0;
1891 }
1892
1893 static int
ipw_disable(struct ipw_softc * sc)1894 ipw_disable(struct ipw_softc *sc)
1895 {
1896 int error;
1897
1898 if (sc->flags & IPW_FLAG_ENABLED) {
1899 DPRINTF(("Disable adapter\n"));
1900 error = ipw_cmd(sc, IPW_CMD_DISABLE, NULL, 0);
1901 if (error != 0)
1902 return error;
1903 error = ipw_waitfordisable(sc, 1);
1904 if (error != 0)
1905 return error;
1906 sc->flags &= ~IPW_FLAG_ENABLED;
1907 }
1908 return 0;
1909 }
1910
1911 /*
1912 * Upload the microcode to the device.
1913 */
1914 static int
ipw_load_ucode(struct ipw_softc * sc,const char * uc,int size)1915 ipw_load_ucode(struct ipw_softc *sc, const char *uc, int size)
1916 {
1917 int ntries;
1918
1919 MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
1920 CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1921
1922 MEM_WRITE_2(sc, 0x220000, 0x0703);
1923 MEM_WRITE_2(sc, 0x220000, 0x0707);
1924
1925 MEM_WRITE_1(sc, 0x210014, 0x72);
1926 MEM_WRITE_1(sc, 0x210014, 0x72);
1927
1928 MEM_WRITE_1(sc, 0x210000, 0x40);
1929 MEM_WRITE_1(sc, 0x210000, 0x00);
1930 MEM_WRITE_1(sc, 0x210000, 0x40);
1931
1932 MEM_WRITE_MULTI_1(sc, 0x210010, uc, size);
1933
1934 MEM_WRITE_1(sc, 0x210000, 0x00);
1935 MEM_WRITE_1(sc, 0x210000, 0x00);
1936 MEM_WRITE_1(sc, 0x210000, 0x80);
1937
1938 MEM_WRITE_2(sc, 0x220000, 0x0703);
1939 MEM_WRITE_2(sc, 0x220000, 0x0707);
1940
1941 MEM_WRITE_1(sc, 0x210014, 0x72);
1942 MEM_WRITE_1(sc, 0x210014, 0x72);
1943
1944 MEM_WRITE_1(sc, 0x210000, 0x00);
1945 MEM_WRITE_1(sc, 0x210000, 0x80);
1946
1947 for (ntries = 0; ntries < 10; ntries++) {
1948 if (MEM_READ_1(sc, 0x210000) & 1)
1949 break;
1950 DELAY(10);
1951 }
1952 if (ntries == 10) {
1953 device_printf(sc->sc_dev,
1954 "timeout waiting for ucode to initialize\n");
1955 return EIO;
1956 }
1957
1958 MEM_WRITE_4(sc, 0x3000e0, 0);
1959
1960 return 0;
1961 }
1962
1963 /* set of macros to handle unaligned little endian data in firmware image */
1964 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
1965 #define GETLE16(p) ((p)[0] | (p)[1] << 8)
1966 static int
ipw_load_firmware(struct ipw_softc * sc,const char * fw,int size)1967 ipw_load_firmware(struct ipw_softc *sc, const char *fw, int size)
1968 {
1969 const uint8_t *p, *end;
1970 uint32_t tmp, dst;
1971 uint16_t len;
1972 int error;
1973
1974 p = fw;
1975 end = fw + size;
1976 while (p < end) {
1977 dst = GETLE32(p); p += 4;
1978 len = GETLE16(p); p += 2;
1979
1980 ipw_write_mem_1(sc, dst, p, len);
1981 p += len;
1982 }
1983
1984 CSR_WRITE_4(sc, IPW_CSR_IO, IPW_IO_GPIO1_ENABLE | IPW_IO_GPIO3_MASK |
1985 IPW_IO_LED_OFF);
1986
1987 /* enable interrupts */
1988 CSR_WRITE_4(sc, IPW_CSR_INTR_MASK, IPW_INTR_MASK);
1989
1990 /* kick the firmware */
1991 CSR_WRITE_4(sc, IPW_CSR_RST, 0);
1992
1993 tmp = CSR_READ_4(sc, IPW_CSR_CTL);
1994 CSR_WRITE_4(sc, IPW_CSR_CTL, tmp | IPW_CTL_ALLOW_STANDBY);
1995
1996 /* wait at most one second for firmware initialization to complete */
1997 if ((error = msleep(sc, &sc->sc_mtx, 0, "ipwinit", hz)) != 0) {
1998 device_printf(sc->sc_dev, "timeout waiting for firmware "
1999 "initialization to complete\n");
2000 return error;
2001 }
2002
2003 tmp = CSR_READ_4(sc, IPW_CSR_IO);
2004 CSR_WRITE_4(sc, IPW_CSR_IO, tmp | IPW_IO_GPIO1_MASK |
2005 IPW_IO_GPIO3_MASK);
2006
2007 return 0;
2008 }
2009
2010 static int
ipw_setwepkeys(struct ipw_softc * sc)2011 ipw_setwepkeys(struct ipw_softc *sc)
2012 {
2013 struct ieee80211com *ic = &sc->sc_ic;
2014 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2015 struct ipw_wep_key wepkey;
2016 struct ieee80211_key *wk;
2017 int error, i;
2018
2019 for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2020 wk = &vap->iv_nw_keys[i];
2021
2022 if (wk->wk_cipher == NULL ||
2023 wk->wk_cipher->ic_cipher != IEEE80211_CIPHER_WEP)
2024 continue;
2025
2026 wepkey.idx = i;
2027 wepkey.len = wk->wk_keylen;
2028 memset(wepkey.key, 0, sizeof wepkey.key);
2029 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2030 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2031 wepkey.len));
2032 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY, &wepkey,
2033 sizeof wepkey);
2034 if (error != 0)
2035 return error;
2036 }
2037 return 0;
2038 }
2039
2040 static int
ipw_setwpaie(struct ipw_softc * sc,const void * ie,int ielen)2041 ipw_setwpaie(struct ipw_softc *sc, const void *ie, int ielen)
2042 {
2043 struct ipw_wpa_ie wpaie;
2044
2045 memset(&wpaie, 0, sizeof(wpaie));
2046 wpaie.len = htole32(ielen);
2047 /* XXX verify length */
2048 memcpy(&wpaie.ie, ie, ielen);
2049 DPRINTF(("Setting WPA IE\n"));
2050 return ipw_cmd(sc, IPW_CMD_SET_WPA_IE, &wpaie, sizeof(wpaie));
2051 }
2052
2053 static int
ipw_setbssid(struct ipw_softc * sc,uint8_t * bssid)2054 ipw_setbssid(struct ipw_softc *sc, uint8_t *bssid)
2055 {
2056 static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
2057
2058 if (bssid == NULL || bcmp(bssid, zerobssid, IEEE80211_ADDR_LEN) == 0) {
2059 DPRINTF(("Setting mandatory BSSID to null\n"));
2060 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID, NULL, 0);
2061 } else {
2062 DPRINTF(("Setting mandatory BSSID to %6D\n", bssid, ":"));
2063 return ipw_cmd(sc, IPW_CMD_SET_MANDATORY_BSSID,
2064 bssid, IEEE80211_ADDR_LEN);
2065 }
2066 }
2067
2068 static int
ipw_setssid(struct ipw_softc * sc,void * ssid,size_t ssidlen)2069 ipw_setssid(struct ipw_softc *sc, void *ssid, size_t ssidlen)
2070 {
2071 if (ssidlen == 0) {
2072 /*
2073 * A bug in the firmware breaks the ``don't associate''
2074 * bit in the scan options command. To compensate for
2075 * this install a bogus ssid when no ssid is specified
2076 * so the firmware won't try to associate.
2077 */
2078 DPRINTF(("Setting bogus ESSID to WAR firmware bug\n"));
2079 return ipw_cmd(sc, IPW_CMD_SET_ESSID,
2080 "\x18\x19\x20\x21\x22\x23\x24\x25\x26\x27"
2081 "\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31"
2082 "\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b"
2083 "\x3c\x3d", IEEE80211_NWID_LEN);
2084 } else {
2085 #ifdef IPW_DEBUG
2086 if (ipw_debug > 0) {
2087 printf("Setting ESSID to ");
2088 ieee80211_print_essid(ssid, ssidlen);
2089 printf("\n");
2090 }
2091 #endif
2092 return ipw_cmd(sc, IPW_CMD_SET_ESSID, ssid, ssidlen);
2093 }
2094 }
2095
2096 static int
ipw_setscanopts(struct ipw_softc * sc,uint32_t chanmask,uint32_t flags)2097 ipw_setscanopts(struct ipw_softc *sc, uint32_t chanmask, uint32_t flags)
2098 {
2099 struct ipw_scan_options opts;
2100
2101 DPRINTF(("Scan options: mask 0x%x flags 0x%x\n", chanmask, flags));
2102 opts.channels = htole32(chanmask);
2103 opts.flags = htole32(flags);
2104 return ipw_cmd(sc, IPW_CMD_SET_SCAN_OPTIONS, &opts, sizeof(opts));
2105 }
2106
2107 static int
ipw_scan(struct ipw_softc * sc)2108 ipw_scan(struct ipw_softc *sc)
2109 {
2110 uint32_t params;
2111 int error;
2112
2113 DPRINTF(("%s: flags 0x%x\n", __func__, sc->flags));
2114
2115 if (sc->flags & IPW_FLAG_SCANNING)
2116 return (EBUSY);
2117 sc->flags |= IPW_FLAG_SCANNING | IPW_FLAG_HACK;
2118
2119 /* NB: IPW_SCAN_DO_NOT_ASSOCIATE does not work (we set it anyway) */
2120 error = ipw_setscanopts(sc, 0x3fff, IPW_SCAN_DO_NOT_ASSOCIATE);
2121 if (error != 0)
2122 goto done;
2123
2124 /*
2125 * Setup null/bogus ssid so firmware doesn't use any previous
2126 * ssid to try and associate. This is because the ``don't
2127 * associate'' option bit is broken (sigh).
2128 */
2129 error = ipw_setssid(sc, NULL, 0);
2130 if (error != 0)
2131 goto done;
2132
2133 /*
2134 * NB: the adapter may be disabled on association lost;
2135 * if so just re-enable it to kick off scanning.
2136 */
2137 DPRINTF(("Starting scan\n"));
2138 sc->sc_scan_timer = 3;
2139 if (sc->flags & IPW_FLAG_ENABLED) {
2140 params = 0; /* XXX? */
2141 error = ipw_cmd(sc, IPW_CMD_BROADCAST_SCAN,
2142 ¶ms, sizeof(params));
2143 } else
2144 error = ipw_enable(sc);
2145 done:
2146 if (error != 0) {
2147 DPRINTF(("Scan failed\n"));
2148 sc->flags &= ~(IPW_FLAG_SCANNING | IPW_FLAG_HACK);
2149 }
2150 return (error);
2151 }
2152
2153 static int
ipw_setchannel(struct ipw_softc * sc,struct ieee80211_channel * chan)2154 ipw_setchannel(struct ipw_softc *sc, struct ieee80211_channel *chan)
2155 {
2156 struct ieee80211com *ic = &sc->sc_ic;
2157 uint32_t data;
2158 int error;
2159
2160 data = htole32(ieee80211_chan2ieee(ic, chan));
2161 DPRINTF(("Setting channel to %u\n", le32toh(data)));
2162 error = ipw_cmd(sc, IPW_CMD_SET_CHANNEL, &data, sizeof data);
2163 if (error == 0)
2164 ipw_setcurchan(sc, chan);
2165 return error;
2166 }
2167
2168 static void
ipw_assoc(struct ieee80211com * ic,struct ieee80211vap * vap)2169 ipw_assoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2170 {
2171 struct ipw_softc *sc = ic->ic_softc;
2172 struct ieee80211_node *ni = vap->iv_bss;
2173 struct ipw_security security;
2174 uint32_t data;
2175 int error;
2176
2177 IPW_LOCK(sc);
2178 error = ipw_disable(sc);
2179 if (error != 0)
2180 goto done;
2181
2182 memset(&security, 0, sizeof security);
2183 security.authmode = (ni->ni_authmode == IEEE80211_AUTH_SHARED) ?
2184 IPW_AUTH_SHARED : IPW_AUTH_OPEN;
2185 security.ciphers = htole32(IPW_CIPHER_NONE);
2186 DPRINTF(("Setting authmode to %u\n", security.authmode));
2187 error = ipw_cmd(sc, IPW_CMD_SET_SECURITY_INFO, &security,
2188 sizeof security);
2189 if (error != 0)
2190 goto done;
2191
2192 data = htole32(vap->iv_rtsthreshold);
2193 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2194 error = ipw_cmd(sc, IPW_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2195 if (error != 0)
2196 goto done;
2197
2198 data = htole32(vap->iv_fragthreshold);
2199 DPRINTF(("Setting frag threshold to %u\n", le32toh(data)));
2200 error = ipw_cmd(sc, IPW_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2201 if (error != 0)
2202 goto done;
2203
2204 if (vap->iv_flags & IEEE80211_F_PRIVACY) {
2205 error = ipw_setwepkeys(sc);
2206 if (error != 0)
2207 goto done;
2208
2209 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) {
2210 data = htole32(vap->iv_def_txkey);
2211 DPRINTF(("Setting wep tx key index to %u\n",
2212 le32toh(data)));
2213 error = ipw_cmd(sc, IPW_CMD_SET_WEP_KEY_INDEX, &data,
2214 sizeof data);
2215 if (error != 0)
2216 goto done;
2217 }
2218 }
2219
2220 data = htole32((vap->iv_flags & IEEE80211_F_PRIVACY) ? IPW_WEPON : 0);
2221 DPRINTF(("Setting wep flags to 0x%x\n", le32toh(data)));
2222 error = ipw_cmd(sc, IPW_CMD_SET_WEP_FLAGS, &data, sizeof data);
2223 if (error != 0)
2224 goto done;
2225
2226 error = ipw_setssid(sc, ni->ni_essid, ni->ni_esslen);
2227 if (error != 0)
2228 goto done;
2229
2230 error = ipw_setbssid(sc, ni->ni_bssid);
2231 if (error != 0)
2232 goto done;
2233
2234 if (vap->iv_appie_wpa != NULL) {
2235 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2236 error = ipw_setwpaie(sc, ie->ie_data, ie->ie_len);
2237 if (error != 0)
2238 goto done;
2239 }
2240 if (ic->ic_opmode == IEEE80211_M_IBSS) {
2241 error = ipw_setchannel(sc, ni->ni_chan);
2242 if (error != 0)
2243 goto done;
2244 }
2245
2246 /* lock scan to ap's channel and enable associate */
2247 error = ipw_setscanopts(sc,
2248 1<<(ieee80211_chan2ieee(ic, ni->ni_chan)-1), 0);
2249 if (error != 0)
2250 goto done;
2251
2252 error = ipw_enable(sc); /* finally, enable adapter */
2253 if (error == 0)
2254 sc->flags |= IPW_FLAG_ASSOCIATING;
2255 done:
2256 IPW_UNLOCK(sc);
2257 }
2258
2259 static void
ipw_disassoc(struct ieee80211com * ic,struct ieee80211vap * vap)2260 ipw_disassoc(struct ieee80211com *ic, struct ieee80211vap *vap)
2261 {
2262 struct ieee80211_node *ni = vap->iv_bss;
2263 struct ipw_softc *sc = ic->ic_softc;
2264
2265 IPW_LOCK(sc);
2266 DPRINTF(("Disassociate from %6D\n", ni->ni_bssid, ":"));
2267 /*
2268 * NB: don't try to do this if ipw_stop_master has
2269 * shutdown the firmware and disabled interrupts.
2270 */
2271 if (sc->flags & IPW_FLAG_FW_INITED) {
2272 sc->flags &= ~IPW_FLAG_ASSOCIATED;
2273 /*
2274 * NB: firmware currently ignores bssid parameter, but
2275 * supply it in case this changes (follow linux driver).
2276 */
2277 (void) ipw_cmd(sc, IPW_CMD_DISASSOCIATE,
2278 ni->ni_bssid, IEEE80211_ADDR_LEN);
2279 }
2280 IPW_UNLOCK(sc);
2281 }
2282
2283 /*
2284 * Handler for sc_init_task. This is a simple wrapper around ipw_init().
2285 * It is called on firmware panics or on watchdog timeouts.
2286 */
2287 static void
ipw_init_task(void * context,int pending)2288 ipw_init_task(void *context, int pending)
2289 {
2290 ipw_init(context);
2291 }
2292
2293 static void
ipw_init(void * priv)2294 ipw_init(void *priv)
2295 {
2296 struct ipw_softc *sc = priv;
2297 struct ieee80211com *ic = &sc->sc_ic;
2298
2299 IPW_LOCK(sc);
2300 ipw_init_locked(sc);
2301 IPW_UNLOCK(sc);
2302
2303 if (sc->flags & IPW_FLAG_RUNNING)
2304 ieee80211_start_all(ic); /* start all vap's */
2305 }
2306
2307 static void
ipw_init_locked(struct ipw_softc * sc)2308 ipw_init_locked(struct ipw_softc *sc)
2309 {
2310 struct ieee80211com *ic = &sc->sc_ic;
2311 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2312 const struct firmware *fp;
2313 const struct ipw_firmware_hdr *hdr;
2314 const char *fw;
2315
2316 IPW_LOCK_ASSERT(sc);
2317
2318 DPRINTF(("%s: state %s flags 0x%x\n", __func__,
2319 ieee80211_state_name[vap->iv_state], sc->flags));
2320
2321 /*
2322 * Avoid re-entrant calls. We need to release the mutex in ipw_init()
2323 * when loading the firmware and we don't want to be called during this
2324 * operation.
2325 */
2326 if (sc->flags & IPW_FLAG_INIT_LOCKED)
2327 return;
2328 sc->flags |= IPW_FLAG_INIT_LOCKED;
2329
2330 ipw_stop_locked(sc);
2331
2332 if (ipw_reset(sc) != 0) {
2333 device_printf(sc->sc_dev, "could not reset adapter\n");
2334 goto fail;
2335 }
2336
2337 if (sc->sc_firmware == NULL) {
2338 device_printf(sc->sc_dev, "no firmware\n");
2339 goto fail;
2340 }
2341 /* NB: consistency already checked on load */
2342 fp = sc->sc_firmware;
2343 hdr = (const struct ipw_firmware_hdr *)fp->data;
2344
2345 DPRINTF(("Loading firmware image '%s'\n", fp->name));
2346 fw = (const char *)fp->data + sizeof *hdr + le32toh(hdr->mainsz);
2347 if (ipw_load_ucode(sc, fw, le32toh(hdr->ucodesz)) != 0) {
2348 device_printf(sc->sc_dev, "could not load microcode\n");
2349 goto fail;
2350 }
2351
2352 ipw_stop_master(sc);
2353
2354 /*
2355 * Setup tx, rx and status rings.
2356 */
2357 sc->txold = IPW_NTBD - 1;
2358 sc->txcur = 0;
2359 sc->txfree = IPW_NTBD - 2;
2360 sc->rxcur = IPW_NRBD - 1;
2361
2362 CSR_WRITE_4(sc, IPW_CSR_TX_BASE, sc->tbd_phys);
2363 CSR_WRITE_4(sc, IPW_CSR_TX_SIZE, IPW_NTBD);
2364 CSR_WRITE_4(sc, IPW_CSR_TX_READ, 0);
2365 CSR_WRITE_4(sc, IPW_CSR_TX_WRITE, sc->txcur);
2366
2367 CSR_WRITE_4(sc, IPW_CSR_RX_BASE, sc->rbd_phys);
2368 CSR_WRITE_4(sc, IPW_CSR_RX_SIZE, IPW_NRBD);
2369 CSR_WRITE_4(sc, IPW_CSR_RX_READ, 0);
2370 CSR_WRITE_4(sc, IPW_CSR_RX_WRITE, sc->rxcur);
2371
2372 CSR_WRITE_4(sc, IPW_CSR_STATUS_BASE, sc->status_phys);
2373
2374 fw = (const char *)fp->data + sizeof *hdr;
2375 if (ipw_load_firmware(sc, fw, le32toh(hdr->mainsz)) != 0) {
2376 device_printf(sc->sc_dev, "could not load firmware\n");
2377 goto fail;
2378 }
2379
2380 sc->flags |= IPW_FLAG_FW_INITED;
2381
2382 /* retrieve information tables base addresses */
2383 sc->table1_base = CSR_READ_4(sc, IPW_CSR_TABLE1_BASE);
2384 sc->table2_base = CSR_READ_4(sc, IPW_CSR_TABLE2_BASE);
2385
2386 ipw_write_table1(sc, IPW_INFO_LOCK, 0);
2387
2388 if (ipw_config(sc) != 0) {
2389 device_printf(sc->sc_dev, "device configuration failed\n");
2390 goto fail;
2391 }
2392
2393 callout_reset(&sc->sc_wdtimer, hz, ipw_watchdog, sc);
2394 sc->flags |= IPW_FLAG_RUNNING;
2395 sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2396 return;
2397
2398 fail:
2399 ipw_stop_locked(sc);
2400 sc->flags &= ~IPW_FLAG_INIT_LOCKED;
2401 }
2402
2403 static int
ipw_config(struct ipw_softc * sc)2404 ipw_config(struct ipw_softc *sc)
2405 {
2406 struct ieee80211com *ic = &sc->sc_ic;
2407 struct ipw_configuration config;
2408 uint32_t data;
2409 int error;
2410
2411 error = ipw_disable(sc);
2412 if (error != 0)
2413 return error;
2414
2415 switch (ic->ic_opmode) {
2416 case IEEE80211_M_STA:
2417 case IEEE80211_M_HOSTAP:
2418 case IEEE80211_M_WDS: /* XXX */
2419 data = htole32(IPW_MODE_BSS);
2420 break;
2421 case IEEE80211_M_IBSS:
2422 case IEEE80211_M_AHDEMO:
2423 data = htole32(IPW_MODE_IBSS);
2424 break;
2425 case IEEE80211_M_MONITOR:
2426 data = htole32(IPW_MODE_MONITOR);
2427 break;
2428 default:
2429 device_printf(sc->sc_dev, "unknown opmode %d\n", ic->ic_opmode);
2430 return EINVAL;
2431 }
2432 DPRINTF(("Setting mode to %u\n", le32toh(data)));
2433 error = ipw_cmd(sc, IPW_CMD_SET_MODE, &data, sizeof data);
2434 if (error != 0)
2435 return error;
2436
2437 if (ic->ic_opmode == IEEE80211_M_IBSS ||
2438 ic->ic_opmode == IEEE80211_M_MONITOR) {
2439 error = ipw_setchannel(sc, ic->ic_curchan);
2440 if (error != 0)
2441 return error;
2442 }
2443
2444 if (ic->ic_opmode == IEEE80211_M_MONITOR)
2445 return ipw_enable(sc);
2446
2447 config.flags = htole32(IPW_CFG_BSS_MASK | IPW_CFG_IBSS_MASK |
2448 IPW_CFG_PREAMBLE_AUTO | IPW_CFG_802_1x_ENABLE);
2449 if (ic->ic_opmode == IEEE80211_M_IBSS)
2450 config.flags |= htole32(IPW_CFG_IBSS_AUTO_START);
2451 if (ic->ic_promisc > 0)
2452 config.flags |= htole32(IPW_CFG_PROMISCUOUS);
2453 config.bss_chan = htole32(0x3fff); /* channels 1-14 */
2454 config.ibss_chan = htole32(0x7ff); /* channels 1-11 */
2455 DPRINTF(("Setting configuration to 0x%x\n", le32toh(config.flags)));
2456 error = ipw_cmd(sc, IPW_CMD_SET_CONFIGURATION, &config, sizeof config);
2457 if (error != 0)
2458 return error;
2459
2460 data = htole32(0xf); /* 1, 2, 5.5, 11 */
2461 DPRINTF(("Setting basic tx rates to 0x%x\n", le32toh(data)));
2462 error = ipw_cmd(sc, IPW_CMD_SET_BASIC_TX_RATES, &data, sizeof data);
2463 if (error != 0)
2464 return error;
2465
2466 /* Use the same rate set */
2467 DPRINTF(("Setting msdu tx rates to 0x%x\n", le32toh(data)));
2468 error = ipw_cmd(sc, IPW_CMD_SET_MSDU_TX_RATES, &data, sizeof data);
2469 if (error != 0)
2470 return error;
2471
2472 /* Use the same rate set */
2473 DPRINTF(("Setting tx rates to 0x%x\n", le32toh(data)));
2474 error = ipw_cmd(sc, IPW_CMD_SET_TX_RATES, &data, sizeof data);
2475 if (error != 0)
2476 return error;
2477
2478 data = htole32(IPW_POWER_MODE_CAM);
2479 DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2480 error = ipw_cmd(sc, IPW_CMD_SET_POWER_MODE, &data, sizeof data);
2481 if (error != 0)
2482 return error;
2483
2484 if (ic->ic_opmode == IEEE80211_M_IBSS) {
2485 data = htole32(32); /* default value */
2486 DPRINTF(("Setting tx power index to %u\n", le32toh(data)));
2487 error = ipw_cmd(sc, IPW_CMD_SET_TX_POWER_INDEX, &data,
2488 sizeof data);
2489 if (error != 0)
2490 return error;
2491 }
2492
2493 return 0;
2494 }
2495
2496 static void
ipw_stop(void * priv)2497 ipw_stop(void *priv)
2498 {
2499 struct ipw_softc *sc = priv;
2500
2501 IPW_LOCK(sc);
2502 ipw_stop_locked(sc);
2503 IPW_UNLOCK(sc);
2504 }
2505
2506 static void
ipw_stop_locked(struct ipw_softc * sc)2507 ipw_stop_locked(struct ipw_softc *sc)
2508 {
2509 int i;
2510
2511 IPW_LOCK_ASSERT(sc);
2512
2513 callout_stop(&sc->sc_wdtimer);
2514 ipw_stop_master(sc);
2515
2516 CSR_WRITE_4(sc, IPW_CSR_RST, IPW_RST_SW_RESET);
2517
2518 /*
2519 * Release tx buffers.
2520 */
2521 for (i = 0; i < IPW_NTBD; i++)
2522 ipw_release_sbd(sc, &sc->stbd_list[i]);
2523
2524 sc->sc_tx_timer = 0;
2525 sc->flags &= ~IPW_FLAG_RUNNING;
2526 }
2527
2528 static int
ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)2529 ipw_sysctl_stats(SYSCTL_HANDLER_ARGS)
2530 {
2531 struct ipw_softc *sc = arg1;
2532 uint32_t i, size, buf[256];
2533
2534 memset(buf, 0, sizeof buf);
2535
2536 if (!(sc->flags & IPW_FLAG_FW_INITED))
2537 return SYSCTL_OUT(req, buf, sizeof buf);
2538
2539 CSR_WRITE_4(sc, IPW_CSR_AUTOINC_ADDR, sc->table1_base);
2540
2541 size = min(CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA), 256);
2542 for (i = 1; i < size; i++)
2543 buf[i] = MEM_READ_4(sc, CSR_READ_4(sc, IPW_CSR_AUTOINC_DATA));
2544
2545 return SYSCTL_OUT(req, buf, size);
2546 }
2547
2548 static int
ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)2549 ipw_sysctl_radio(SYSCTL_HANDLER_ARGS)
2550 {
2551 struct ipw_softc *sc = arg1;
2552 int val;
2553
2554 val = !((sc->flags & IPW_FLAG_HAS_RADIO_SWITCH) &&
2555 (CSR_READ_4(sc, IPW_CSR_IO) & IPW_IO_RADIO_DISABLED));
2556
2557 return SYSCTL_OUT(req, &val, sizeof val);
2558 }
2559
2560 static uint32_t
ipw_read_table1(struct ipw_softc * sc,uint32_t off)2561 ipw_read_table1(struct ipw_softc *sc, uint32_t off)
2562 {
2563 return MEM_READ_4(sc, MEM_READ_4(sc, sc->table1_base + off));
2564 }
2565
2566 static void
ipw_write_table1(struct ipw_softc * sc,uint32_t off,uint32_t info)2567 ipw_write_table1(struct ipw_softc *sc, uint32_t off, uint32_t info)
2568 {
2569 MEM_WRITE_4(sc, MEM_READ_4(sc, sc->table1_base + off), info);
2570 }
2571
2572 #if 0
2573 static int
2574 ipw_read_table2(struct ipw_softc *sc, uint32_t off, void *buf, uint32_t *len)
2575 {
2576 uint32_t addr, info;
2577 uint16_t count, size;
2578 uint32_t total;
2579
2580 /* addr[4] + count[2] + size[2] */
2581 addr = MEM_READ_4(sc, sc->table2_base + off);
2582 info = MEM_READ_4(sc, sc->table2_base + off + 4);
2583
2584 count = info >> 16;
2585 size = info & 0xffff;
2586 total = count * size;
2587
2588 if (total > *len) {
2589 *len = total;
2590 return EINVAL;
2591 }
2592
2593 *len = total;
2594 ipw_read_mem_1(sc, addr, buf, total);
2595
2596 return 0;
2597 }
2598
2599 static void
2600 ipw_read_mem_1(struct ipw_softc *sc, bus_size_t offset, uint8_t *datap,
2601 bus_size_t count)
2602 {
2603 for (; count > 0; offset++, datap++, count--) {
2604 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2605 *datap = CSR_READ_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3));
2606 }
2607 }
2608 #endif
2609
2610 static void
ipw_write_mem_1(struct ipw_softc * sc,bus_size_t offset,const uint8_t * datap,bus_size_t count)2611 ipw_write_mem_1(struct ipw_softc *sc, bus_size_t offset, const uint8_t *datap,
2612 bus_size_t count)
2613 {
2614 for (; count > 0; offset++, datap++, count--) {
2615 CSR_WRITE_4(sc, IPW_CSR_INDIRECT_ADDR, offset & ~3);
2616 CSR_WRITE_1(sc, IPW_CSR_INDIRECT_DATA + (offset & 3), *datap);
2617 }
2618 }
2619
2620 static void
ipw_scan_start(struct ieee80211com * ic)2621 ipw_scan_start(struct ieee80211com *ic)
2622 {
2623 struct ipw_softc *sc = ic->ic_softc;
2624
2625 IPW_LOCK(sc);
2626 ipw_scan(sc);
2627 IPW_UNLOCK(sc);
2628 }
2629
2630 static void
ipw_getradiocaps(struct ieee80211com * ic,int maxchans,int * nchans,struct ieee80211_channel chans[])2631 ipw_getradiocaps(struct ieee80211com *ic,
2632 int maxchans, int *nchans, struct ieee80211_channel chans[])
2633 {
2634 struct ipw_softc *sc = ic->ic_softc;
2635 uint8_t bands[IEEE80211_MODE_BYTES];
2636 int i;
2637
2638 memset(bands, 0, sizeof(bands));
2639 setbit(bands, IEEE80211_MODE_11B);
2640
2641 for (i = 1; i < 16; i++) {
2642 if (sc->chanmask & (1 << i)) {
2643 ieee80211_add_channel(chans, maxchans, nchans,
2644 i, 0, 0, 0, bands);
2645 }
2646 }
2647
2648 }
2649
2650 static void
ipw_set_channel(struct ieee80211com * ic)2651 ipw_set_channel(struct ieee80211com *ic)
2652 {
2653 struct ipw_softc *sc = ic->ic_softc;
2654
2655 IPW_LOCK(sc);
2656 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2657 ipw_disable(sc);
2658 ipw_setchannel(sc, ic->ic_curchan);
2659 ipw_enable(sc);
2660 }
2661 IPW_UNLOCK(sc);
2662 }
2663
2664 static void
ipw_scan_curchan(struct ieee80211_scan_state * ss,unsigned long maxdwell)2665 ipw_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
2666 {
2667 /* NB: all channels are scanned at once */
2668 }
2669
2670 static void
ipw_scan_mindwell(struct ieee80211_scan_state * ss)2671 ipw_scan_mindwell(struct ieee80211_scan_state *ss)
2672 {
2673 /* NB: don't try to abort scan; wait for firmware to finish */
2674 }
2675
2676 static void
ipw_scan_end(struct ieee80211com * ic)2677 ipw_scan_end(struct ieee80211com *ic)
2678 {
2679 struct ipw_softc *sc = ic->ic_softc;
2680
2681 IPW_LOCK(sc);
2682 sc->flags &= ~IPW_FLAG_SCANNING;
2683 IPW_UNLOCK(sc);
2684 }
2685