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