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kernel: Remove <sys/mutex.h> from all files that don't need it (2/2).
[dragonfly.git] / sys / dev / netif / iwi / if_iwi.c
bloba45a5eb86e0909e87ffefc280318883c940db13d
1 /*-
2 * Copyright (c) 2004, 2005
3 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
4 * Copyright (c) 2005-2006 Sam Leffler, Errno Consulting
5 * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
12 * disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: head/sys/dev/iwi/if_iwi.c 298818 2016-04-29 22:14:11Z avos $
30 */
31
32 /*-
33 * Intel(R) PRO/Wireless 2200BG/2225BG/2915ABG driver
34 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
35 */
36
37 #include <sys/param.h>
38 #include <sys/sysctl.h>
39 #include <sys/sockio.h>
40 #include <sys/mbuf.h>
41 #include <sys/kernel.h>
42 #include <sys/socket.h>
43 #include <sys/systm.h>
44 #include <sys/malloc.h>
45 #include <sys/lock.h>
46 #include <sys/module.h>
47 #include <sys/bus.h>
48 #include <sys/endian.h>
49 #include <sys/proc.h>
50 #include <sys/mount.h>
51 #include <sys/namei.h>
52 #include <sys/linker.h>
53 #include <sys/firmware.h>
54 #include <sys/taskqueue.h>
55 #if defined(__DragonFly__)
56 #include <sys/devfs.h>
57 #endif
58
59 #if !defined(__DragonFly__)
60 #include <machine/bus.h>
61 #include <machine/resource.h>
62 #endif
63 #include <sys/rman.h>
64
65 #if defined(__DragonFly__)
66 #include <bus/pci/pcivar.h>
67 #include <bus/pci/pcireg.h>
68 #else
69 #include <dev/pci/pcireg.h>
70 #include <dev/pci/pcivar.h>
71 #endif
72
73 #include <net/bpf.h>
74 #include <net/if.h>
75 #include <net/if_var.h>
76 #include <net/if_arp.h>
77 #include <net/ethernet.h>
78 #include <net/if_dl.h>
79 #include <net/if_media.h>
80 #include <net/if_types.h>
81
82 #if defined(__DragonFly__)
83 #include <netproto/802_11/ieee80211_var.h>
84 #include <netproto/802_11/ieee80211_radiotap.h>
85 #include <netproto/802_11/ieee80211_input.h>
86 #include <netproto/802_11/ieee80211_regdomain.h>
87 #else
88 #include <net80211/ieee80211_var.h>
89 #include <net80211/ieee80211_radiotap.h>
90 #include <net80211/ieee80211_input.h>
91 #include <net80211/ieee80211_regdomain.h>
92 #endif
93
94 #include <netinet/in.h>
95 #include <netinet/in_systm.h>
96 #include <netinet/in_var.h>
97 #include <netinet/ip.h>
98 #include <netinet/if_ether.h>
99
100 #if defined(__DragonFly__)
101 #include "if_iwireg.h"
102 #include "if_iwivar.h"
103 #else
104 #include <dev/iwi/if_iwireg.h>
105 #include <dev/iwi/if_iwivar.h>
106 #endif
107
108 #define IWI_DEBUG
109 #ifdef IWI_DEBUG
110 #define DPRINTF(x) do { if (iwi_debug > 0) kprintf x; } while (0)
111 #define DPRINTFN(n, x) do { if (iwi_debug >= (n)) kprintf x; } while (0)
112 int iwi_debug = 0;
113 SYSCTL_INT(_debug, OID_AUTO, iwi, CTLFLAG_RW, &iwi_debug, 0, "iwi debug level");
114
115 static const char *iwi_fw_states[] = {
116 "IDLE", /* IWI_FW_IDLE */
117 "LOADING", /* IWI_FW_LOADING */
118 "ASSOCIATING", /* IWI_FW_ASSOCIATING */
119 "DISASSOCIATING", /* IWI_FW_DISASSOCIATING */
120 "SCANNING", /* IWI_FW_SCANNING */
121 };
122 #else
123 #define DPRINTF(x)
124 #define DPRINTFN(n, x)
125 #endif
126
127 MODULE_DEPEND(iwi, pci, 1, 1, 1);
128 MODULE_DEPEND(iwi, wlan, 1, 1, 1);
129 MODULE_DEPEND(iwi, firmware, 1, 1, 1);
130
131 enum {
132 IWI_LED_TX,
133 IWI_LED_RX,
134 IWI_LED_POLL,
135 };
136
137 struct iwi_ident {
138 uint16_t vendor;
139 uint16_t device;
140 const char *name;
141 };
142
143 static const struct iwi_ident iwi_ident_table[] = {
144 { 0x8086, 0x4220, "Intel(R) PRO/Wireless 2200BG" },
145 { 0x8086, 0x4221, "Intel(R) PRO/Wireless 2225BG" },
146 { 0x8086, 0x4223, "Intel(R) PRO/Wireless 2915ABG" },
147 { 0x8086, 0x4224, "Intel(R) PRO/Wireless 2915ABG" },
148
149 { 0, 0, NULL }
150 };
151
152 static struct ieee80211vap *iwi_vap_create(struct ieee80211com *,
153 const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
154 const uint8_t [IEEE80211_ADDR_LEN],
155 const uint8_t [IEEE80211_ADDR_LEN]);
156 static void iwi_vap_delete(struct ieee80211vap *);
157 static void iwi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
158 static int iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *,
159 int);
160 static void iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
161 static void iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
162 static int iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *,
163 int, bus_addr_t, bus_addr_t);
164 static void iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
165 static void iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
166 static int iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *,
167 int);
168 static void iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
169 static void iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
170 static struct ieee80211_node *iwi_node_alloc(struct ieee80211vap *,
171 const uint8_t [IEEE80211_ADDR_LEN]);
172 static void iwi_node_free(struct ieee80211_node *);
173 static void iwi_media_status(struct ifnet *, struct ifmediareq *);
174 static int iwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
175 static void iwi_wme_init(struct iwi_softc *);
176 static int iwi_wme_setparams(struct iwi_softc *);
177 static int iwi_wme_update(struct ieee80211com *);
178 static uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t);
179 static void iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int,
180 struct iwi_frame *);
181 static void iwi_notification_intr(struct iwi_softc *, struct iwi_notif *);
182 static void iwi_rx_intr(struct iwi_softc *);
183 static void iwi_tx_intr(struct iwi_softc *, struct iwi_tx_ring *);
184 static void iwi_intr(void *);
185 static int iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t);
186 static void iwi_write_ibssnode(struct iwi_softc *, const u_int8_t [], int);
187 static int iwi_tx_start(struct iwi_softc *, struct mbuf *,
188 struct ieee80211_node *, int);
189 static int iwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
190 const struct ieee80211_bpf_params *);
191 static void iwi_start(struct iwi_softc *);
192 static int iwi_transmit(struct ieee80211com *, struct mbuf *);
193 static void iwi_watchdog(void *);
194 static void iwi_parent(struct ieee80211com *);
195 static void iwi_stop_master(struct iwi_softc *);
196 static int iwi_reset(struct iwi_softc *);
197 static int iwi_load_ucode(struct iwi_softc *, const struct iwi_fw *);
198 static int iwi_load_firmware(struct iwi_softc *, const struct iwi_fw *);
199 static void iwi_release_fw_dma(struct iwi_softc *sc);
200 static int iwi_config(struct iwi_softc *);
201 static int iwi_get_firmware(struct iwi_softc *, enum ieee80211_opmode);
202 static void iwi_put_firmware(struct iwi_softc *);
203 static void iwi_monitor_scan(void *, int);
204 static int iwi_scanchan(struct iwi_softc *, unsigned long, int);
205 static void iwi_scan_start(struct ieee80211com *);
206 static void iwi_scan_end(struct ieee80211com *);
207 static void iwi_set_channel(struct ieee80211com *);
208 static void iwi_scan_curchan(struct ieee80211_scan_state *, unsigned long maxdwell);
209 static void iwi_scan_mindwell(struct ieee80211_scan_state *);
210 static int iwi_auth_and_assoc(struct iwi_softc *, struct ieee80211vap *);
211 static void iwi_disassoc(void *, int);
212 static int iwi_disassociate(struct iwi_softc *, int quiet);
213 static void iwi_init_locked(struct iwi_softc *);
214 static void iwi_init(void *);
215 static int iwi_init_fw_dma(struct iwi_softc *, int);
216 static void iwi_stop_locked(void *);
217 static void iwi_stop(struct iwi_softc *);
218 static void iwi_restart(void *, int);
219 static int iwi_getrfkill(struct iwi_softc *);
220 static void iwi_radio_on(void *, int);
221 static void iwi_radio_off(void *, int);
222 static void iwi_sysctlattach(struct iwi_softc *);
223 static void iwi_led_event(struct iwi_softc *, int);
224 static void iwi_ledattach(struct iwi_softc *);
225
226 static int iwi_probe(device_t);
227 static int iwi_attach(device_t);
228 static int iwi_detach(device_t);
229 static int iwi_shutdown(device_t);
230 static int iwi_suspend(device_t);
231 static int iwi_resume(device_t);
232
233 static device_method_t iwi_methods[] = {
234 /* Device interface */
235 DEVMETHOD(device_probe, iwi_probe),
236 DEVMETHOD(device_attach, iwi_attach),
237 DEVMETHOD(device_detach, iwi_detach),
238 DEVMETHOD(device_shutdown, iwi_shutdown),
239 DEVMETHOD(device_suspend, iwi_suspend),
240 DEVMETHOD(device_resume, iwi_resume),
241
242 DEVMETHOD_END
243 };
244
245 static driver_t iwi_driver = {
246 "iwi",
247 iwi_methods,
248 sizeof (struct iwi_softc)
249 };
250
251 static devclass_t iwi_devclass;
252
253 DRIVER_MODULE(iwi, pci, iwi_driver, iwi_devclass, NULL, NULL);
254
255 MODULE_VERSION(iwi, 1);
256
257 static __inline uint8_t
258 MEM_READ_1(struct iwi_softc *sc, uint32_t addr)
259 {
260 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
261 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA);
262 }
263
264 static __inline uint32_t
265 MEM_READ_4(struct iwi_softc *sc, uint32_t addr)
266 {
267 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
268 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA);
269 }
270
271 static int
272 iwi_probe(device_t dev)
273 {
274 const struct iwi_ident *ident;
275
276 for (ident = iwi_ident_table; ident->name != NULL; ident++) {
277 if (pci_get_vendor(dev) == ident->vendor &&
278 pci_get_device(dev) == ident->device) {
279 device_set_desc(dev, ident->name);
280 return (BUS_PROBE_DEFAULT);
281 }
282 }
283 return ENXIO;
284 }
285
286 static int
287 iwi_attach(device_t dev)
288 {
289 struct iwi_softc *sc = device_get_softc(dev);
290 struct ieee80211com *ic = &sc->sc_ic;
291 uint16_t val;
292 uint8_t bands[IEEE80211_MODE_BYTES];
293 int i, error;
294
295 sc->sc_dev = dev;
296
297 IWI_LOCK_INIT(sc);
298 mbufq_init(&sc->sc_snd, ifqmaxlen);
299
300 #if defined(__DragonFly__)
301 devfs_clone_bitmap_init(&sc->sc_unr);
302 #else
303 sc->sc_unr = new_unrhdr(1, IWI_MAX_IBSSNODE-1, &sc->sc_mtx);
304 #endif
305
306 TASK_INIT(&sc->sc_radiontask, 0, iwi_radio_on, sc);
307 TASK_INIT(&sc->sc_radiofftask, 0, iwi_radio_off, sc);
308 TASK_INIT(&sc->sc_restarttask, 0, iwi_restart, sc);
309 TASK_INIT(&sc->sc_disassoctask, 0, iwi_disassoc, sc);
310 TASK_INIT(&sc->sc_monitortask, 0, iwi_monitor_scan, sc);
311
312 #if defined(__DragonFly__)
313 callout_init_lk(&sc->sc_wdtimer, &sc->sc_lock);
314 callout_init_lk(&sc->sc_rftimer, &sc->sc_lock);
315 #else
316 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
317 callout_init_mtx(&sc->sc_rftimer, &sc->sc_mtx, 0);
318 #endif
319
320 pci_write_config(dev, 0x41, 0, 1);
321
322 /* enable bus-mastering */
323 pci_enable_busmaster(dev);
324
325 i = PCIR_BAR(0);
326 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
327 if (sc->mem == NULL) {
328 device_printf(dev, "could not allocate memory resource\n");
329 goto fail;
330 }
331
332 sc->sc_st = rman_get_bustag(sc->mem);
333 sc->sc_sh = rman_get_bushandle(sc->mem);
334
335 i = 0;
336 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
337 RF_ACTIVE | RF_SHAREABLE);
338 if (sc->irq == NULL) {
339 device_printf(dev, "could not allocate interrupt resource\n");
340 goto fail;
341 }
342
343 if (iwi_reset(sc) != 0) {
344 device_printf(dev, "could not reset adapter\n");
345 goto fail;
346 }
347
348 /*
349 * Allocate rings.
350 */
351 if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) {
352 device_printf(dev, "could not allocate Cmd ring\n");
353 goto fail;
354 }
355
356 for (i = 0; i < 4; i++) {
357 error = iwi_alloc_tx_ring(sc, &sc->txq[i], IWI_TX_RING_COUNT,
358 IWI_CSR_TX1_RIDX + i * 4,
359 IWI_CSR_TX1_WIDX + i * 4);
360 if (error != 0) {
361 device_printf(dev, "could not allocate Tx ring %d\n",
362 i+i);
363 goto fail;
364 }
365 }
366
367 if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) {
368 device_printf(dev, "could not allocate Rx ring\n");
369 goto fail;
370 }
371
372 iwi_wme_init(sc);
373
374 ic->ic_softc = sc;
375 ic->ic_name = device_get_nameunit(dev);
376 ic->ic_opmode = IEEE80211_M_STA;
377 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
378
379 /* set device capabilities */
380 ic->ic_caps =
381 IEEE80211_C_STA /* station mode supported */
382 | IEEE80211_C_IBSS /* IBSS mode supported */
383 | IEEE80211_C_MONITOR /* monitor mode supported */
384 | IEEE80211_C_PMGT /* power save supported */
385 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
386 | IEEE80211_C_WPA /* 802.11i */
387 | IEEE80211_C_WME /* 802.11e */
388 #if 0
389 | IEEE80211_C_BGSCAN /* capable of bg scanning */
390 #endif
391 ;
392
393 /* read MAC address from EEPROM */
394 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0);
395 ic->ic_macaddr[0] = val & 0xff;
396 ic->ic_macaddr[1] = val >> 8;
397 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1);
398 ic->ic_macaddr[2] = val & 0xff;
399 ic->ic_macaddr[3] = val >> 8;
400 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2);
401 ic->ic_macaddr[4] = val & 0xff;
402 ic->ic_macaddr[5] = val >> 8;
403
404 memset(bands, 0, sizeof(bands));
405 setbit(bands, IEEE80211_MODE_11B);
406 setbit(bands, IEEE80211_MODE_11G);
407 if (pci_get_device(dev) >= 0x4223)
408 setbit(bands, IEEE80211_MODE_11A);
409 ieee80211_init_channels(ic, NULL, bands);
410
411 ieee80211_ifattach(ic);
412 /* override default methods */
413 ic->ic_node_alloc = iwi_node_alloc;
414 sc->sc_node_free = ic->ic_node_free;
415 ic->ic_node_free = iwi_node_free;
416 ic->ic_raw_xmit = iwi_raw_xmit;
417 ic->ic_scan_start = iwi_scan_start;
418 ic->ic_scan_end = iwi_scan_end;
419 ic->ic_set_channel = iwi_set_channel;
420 ic->ic_scan_curchan = iwi_scan_curchan;
421 ic->ic_scan_mindwell = iwi_scan_mindwell;
422 ic->ic_wme.wme_update = iwi_wme_update;
423
424 ic->ic_vap_create = iwi_vap_create;
425 ic->ic_vap_delete = iwi_vap_delete;
426 ic->ic_transmit = iwi_transmit;
427 ic->ic_parent = iwi_parent;
428
429 ieee80211_radiotap_attach(ic,
430 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
431 IWI_TX_RADIOTAP_PRESENT,
432 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
433 IWI_RX_RADIOTAP_PRESENT);
434
435 iwi_sysctlattach(sc);
436 iwi_ledattach(sc);
437
438 /*
439 * Hook our interrupt after all initialization is complete.
440 */
441 #if defined(__DragonFly__)
442 error = bus_setup_intr(dev, sc->irq, INTR_MPSAFE,
443 iwi_intr, sc, &sc->sc_ih, &wlan_global_serializer);
444 #else
445 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
446 NULL, iwi_intr, sc, &sc->sc_ih);
447 #endif
448 if (error != 0) {
449 device_printf(dev, "could not set up interrupt\n");
450 goto fail;
451 }
452
453 if (bootverbose)
454 ieee80211_announce(ic);
455
456 return 0;
457 fail:
458 /* XXX fix */
459 iwi_detach(dev);
460 return ENXIO;
461 }
462
463 static int
464 iwi_detach(device_t dev)
465 {
466 struct iwi_softc *sc = device_get_softc(dev);
467 struct ieee80211com *ic = &sc->sc_ic;
468
469 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
470
471 /* NB: do early to drain any pending tasks */
472 ieee80211_draintask(ic, &sc->sc_radiontask);
473 ieee80211_draintask(ic, &sc->sc_radiofftask);
474 ieee80211_draintask(ic, &sc->sc_restarttask);
475 ieee80211_draintask(ic, &sc->sc_disassoctask);
476 ieee80211_draintask(ic, &sc->sc_monitortask);
477
478 iwi_stop(sc);
479
480 ieee80211_ifdetach(ic);
481
482 iwi_put_firmware(sc);
483 iwi_release_fw_dma(sc);
484
485 iwi_free_cmd_ring(sc, &sc->cmdq);
486 iwi_free_tx_ring(sc, &sc->txq[0]);
487 iwi_free_tx_ring(sc, &sc->txq[1]);
488 iwi_free_tx_ring(sc, &sc->txq[2]);
489 iwi_free_tx_ring(sc, &sc->txq[3]);
490 iwi_free_rx_ring(sc, &sc->rxq);
491
492 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
493
494 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
495 sc->mem);
496
497 #if defined(__DragonFly__)
498 devfs_clone_bitmap_uninit(&sc->sc_unr);
499 #else
500 delete_unrhdr(sc->sc_unr);
501 #endif
502 mbufq_drain(&sc->sc_snd);
503
504 IWI_LOCK_DESTROY(sc);
505
506 return 0;
507 }
508
509 static struct ieee80211vap *
510 iwi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
511 enum ieee80211_opmode opmode, int flags,
512 const uint8_t bssid[IEEE80211_ADDR_LEN],
513 const uint8_t mac[IEEE80211_ADDR_LEN])
514 {
515 struct iwi_softc *sc = ic->ic_softc;
516 struct iwi_vap *ivp;
517 struct ieee80211vap *vap;
518 int i;
519
520 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
521 return NULL;
522 /*
523 * Get firmware image (and possibly dma memory) on mode change.
524 */
525 if (iwi_get_firmware(sc, opmode))
526 return NULL;
527 /* allocate DMA memory for mapping firmware image */
528 i = sc->fw_fw.size;
529 if (sc->fw_boot.size > i)
530 i = sc->fw_boot.size;
531 /* XXX do we dma the ucode as well ? */
532 if (sc->fw_uc.size > i)
533 i = sc->fw_uc.size;
534 if (iwi_init_fw_dma(sc, i))
535 return NULL;
536
537 ivp = kmalloc(sizeof(struct iwi_vap), M_80211_VAP, M_WAITOK | M_ZERO);
538 vap = &ivp->iwi_vap;
539 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
540 /* override the default, the setting comes from the linux driver */
541 vap->iv_bmissthreshold = 24;
542 /* override with driver methods */
543 ivp->iwi_newstate = vap->iv_newstate;
544 vap->iv_newstate = iwi_newstate;
545
546 /* complete setup */
547 ieee80211_vap_attach(vap, ieee80211_media_change, iwi_media_status,
548 mac);
549 ic->ic_opmode = opmode;
550 return vap;
551 }
552
553 static void
554 iwi_vap_delete(struct ieee80211vap *vap)
555 {
556 struct iwi_vap *ivp = IWI_VAP(vap);
557
558 ieee80211_vap_detach(vap);
559 kfree(ivp, M_80211_VAP);
560 }
561
562 static void
563 iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
564 {
565 if (error != 0)
566 return;
567
568 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
569
570 *(bus_addr_t *)arg = segs[0].ds_addr;
571 }
572
573 static int
574 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, int count)
575 {
576 int error;
577
578 ring->count = count;
579 ring->queued = 0;
580 ring->cur = ring->next = 0;
581
582 #if defined(__DragonFly__)
583 error = bus_dma_tag_create(NULL, 4, 0,
584 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
585 count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE,
586 0 , &ring->desc_dmat);
587 #else
588 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
589 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
590 count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE, 0,
591 NULL, NULL, &ring->desc_dmat);
592 #endif
593 if (error != 0) {
594 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
595 goto fail;
596 }
597
598 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
599 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
600 if (error != 0) {
601 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
602 goto fail;
603 }
604
605 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
606 count * IWI_CMD_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
607 if (error != 0) {
608 device_printf(sc->sc_dev, "could not load desc DMA map\n");
609 goto fail;
610 }
611
612 return 0;
613
614 fail: iwi_free_cmd_ring(sc, ring);
615 return error;
616 }
617
618 static void
619 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
620 {
621 ring->queued = 0;
622 ring->cur = ring->next = 0;
623 }
624
625 static void
626 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
627 {
628 if (ring->desc != NULL) {
629 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
630 BUS_DMASYNC_POSTWRITE);
631 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
632 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
633 }
634
635 if (ring->desc_dmat != NULL)
636 bus_dma_tag_destroy(ring->desc_dmat);
637 }
638
639 static int
640 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, int count,
641 bus_addr_t csr_ridx, bus_addr_t csr_widx)
642 {
643 int i, error;
644
645 ring->count = count;
646 ring->queued = 0;
647 ring->cur = ring->next = 0;
648 ring->csr_ridx = csr_ridx;
649 ring->csr_widx = csr_widx;
650
651 #if defined(__DragonFly__)
652 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
653 BUS_SPACE_MAXADDR, NULL, NULL, count * IWI_TX_DESC_SIZE, 1,
654 count * IWI_TX_DESC_SIZE, 0, &ring->desc_dmat);
655 #else
656 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
657 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
658 count * IWI_TX_DESC_SIZE, 1, count * IWI_TX_DESC_SIZE, 0, NULL,
659 NULL, &ring->desc_dmat);
660 #endif
661 if (error != 0) {
662 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
663 goto fail;
664 }
665
666 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
667 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
668 if (error != 0) {
669 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
670 goto fail;
671 }
672
673 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
674 count * IWI_TX_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
675 if (error != 0) {
676 device_printf(sc->sc_dev, "could not load desc DMA map\n");
677 goto fail;
678 }
679
680 ring->data = kmalloc(count * sizeof (struct iwi_tx_data), M_DEVBUF,
681 M_WAITOK | M_ZERO);
682 if (ring->data == NULL) {
683 device_printf(sc->sc_dev, "could not allocate soft data\n");
684 error = ENOMEM;
685 goto fail;
686 }
687
688 #if defined(__DragonFly__)
689 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
690 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IWI_MAX_NSEG,
691 MCLBYTES, 0, &ring->data_dmat);
692 #else
693 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
694 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
695 IWI_MAX_NSEG, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
696 #endif
697 if (error != 0) {
698 device_printf(sc->sc_dev, "could not create data DMA tag\n");
699 goto fail;
700 }
701
702 for (i = 0; i < count; i++) {
703 error = bus_dmamap_create(ring->data_dmat, 0,
704 &ring->data[i].map);
705 if (error != 0) {
706 device_printf(sc->sc_dev, "could not create DMA map\n");
707 goto fail;
708 }
709 }
710
711 return 0;
712
713 fail: iwi_free_tx_ring(sc, ring);
714 return error;
715 }
716
717 static void
718 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
719 {
720 struct iwi_tx_data *data;
721 int i;
722
723 for (i = 0; i < ring->count; i++) {
724 data = &ring->data[i];
725
726 if (data->m != NULL) {
727 bus_dmamap_sync(ring->data_dmat, data->map,
728 BUS_DMASYNC_POSTWRITE);
729 bus_dmamap_unload(ring->data_dmat, data->map);
730 m_freem(data->m);
731 data->m = NULL;
732 }
733
734 if (data->ni != NULL) {
735 ieee80211_free_node(data->ni);
736 data->ni = NULL;
737 }
738 }
739
740 ring->queued = 0;
741 ring->cur = ring->next = 0;
742 }
743
744 static void
745 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
746 {
747 struct iwi_tx_data *data;
748 int i;
749
750 if (ring->desc != NULL) {
751 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
752 BUS_DMASYNC_POSTWRITE);
753 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
754 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
755 }
756
757 if (ring->desc_dmat != NULL)
758 bus_dma_tag_destroy(ring->desc_dmat);
759
760 if (ring->data != NULL) {
761 for (i = 0; i < ring->count; i++) {
762 data = &ring->data[i];
763
764 if (data->m != NULL) {
765 bus_dmamap_sync(ring->data_dmat, data->map,
766 BUS_DMASYNC_POSTWRITE);
767 bus_dmamap_unload(ring->data_dmat, data->map);
768 m_freem(data->m);
769 }
770
771 if (data->ni != NULL)
772 ieee80211_free_node(data->ni);
773
774 if (data->map != NULL)
775 bus_dmamap_destroy(ring->data_dmat, data->map);
776 }
777
778 kfree(ring->data, M_DEVBUF);
779 }
780
781 if (ring->data_dmat != NULL)
782 bus_dma_tag_destroy(ring->data_dmat);
783 }
784
785 static int
786 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count)
787 {
788 struct iwi_rx_data *data;
789 int i, error;
790
791 ring->count = count;
792 ring->cur = 0;
793
794 ring->data = kmalloc(count * sizeof (struct iwi_rx_data), M_DEVBUF,
795 M_WAITOK | M_ZERO);
796 if (ring->data == NULL) {
797 device_printf(sc->sc_dev, "could not allocate soft data\n");
798 error = ENOMEM;
799 goto fail;
800 }
801
802 #if defined(__DragonFly__)
803 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT,
804 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES,
805 0, &ring->data_dmat);
806 #else
807 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
808 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
809 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
810 #endif
811 if (error != 0) {
812 device_printf(sc->sc_dev, "could not create data DMA tag\n");
813 goto fail;
814 }
815
816 for (i = 0; i < count; i++) {
817 data = &ring->data[i];
818
819 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
820 if (error != 0) {
821 device_printf(sc->sc_dev, "could not create DMA map\n");
822 goto fail;
823 }
824
825 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
826 if (data->m == NULL) {
827 device_printf(sc->sc_dev,
828 "could not allocate rx mbuf\n");
829 error = ENOMEM;
830 goto fail;
831 }
832
833 error = bus_dmamap_load(ring->data_dmat, data->map,
834 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
835 &data->physaddr, 0);
836 if (error != 0) {
837 device_printf(sc->sc_dev,
838 "could not load rx buf DMA map");
839 goto fail;
840 }
841
842 data->reg = IWI_CSR_RX_BASE + i * 4;
843 }
844
845 return 0;
846
847 fail: iwi_free_rx_ring(sc, ring);
848 return error;
849 }
850
851 static void
852 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
853 {
854 ring->cur = 0;
855 }
856
857 static void
858 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
859 {
860 struct iwi_rx_data *data;
861 int i;
862
863 if (ring->data != NULL) {
864 for (i = 0; i < ring->count; i++) {
865 data = &ring->data[i];
866
867 if (data->m != NULL) {
868 bus_dmamap_sync(ring->data_dmat, data->map,
869 BUS_DMASYNC_POSTREAD);
870 bus_dmamap_unload(ring->data_dmat, data->map);
871 m_freem(data->m);
872 }
873
874 if (data->map != NULL)
875 bus_dmamap_destroy(ring->data_dmat, data->map);
876 }
877
878 kfree(ring->data, M_DEVBUF);
879 }
880
881 if (ring->data_dmat != NULL)
882 bus_dma_tag_destroy(ring->data_dmat);
883 }
884
885 static int
886 iwi_shutdown(device_t dev)
887 {
888 struct iwi_softc *sc = device_get_softc(dev);
889
890 iwi_stop(sc);
891 iwi_put_firmware(sc); /* ??? XXX */
892
893 return 0;
894 }
895
896 static int
897 iwi_suspend(device_t dev)
898 {
899 struct iwi_softc *sc = device_get_softc(dev);
900 struct ieee80211com *ic = &sc->sc_ic;
901
902 ieee80211_suspend_all(ic);
903 return 0;
904 }
905
906 static int
907 iwi_resume(device_t dev)
908 {
909 struct iwi_softc *sc = device_get_softc(dev);
910 struct ieee80211com *ic = &sc->sc_ic;
911
912 pci_write_config(dev, 0x41, 0, 1);
913
914 ieee80211_resume_all(ic);
915 return 0;
916 }
917
918 static struct ieee80211_node *
919 iwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
920 {
921 struct iwi_node *in;
922
923 in = kmalloc(sizeof (struct iwi_node), M_80211_NODE, M_INTWAIT | M_ZERO);
924 if (in == NULL)
925 return NULL;
926 /* XXX assign sta table entry for adhoc */
927 in->in_station = -1;
928
929 return &in->in_node;
930 }
931
932 static void
933 iwi_node_free(struct ieee80211_node *ni)
934 {
935 struct ieee80211com *ic = ni->ni_ic;
936 struct iwi_softc *sc = ic->ic_softc;
937 struct iwi_node *in = (struct iwi_node *)ni;
938
939 if (in->in_station != -1) {
940 #if defined(__DragonFly__)
941 DPRINTF(("%s mac %s station %u\n", __func__,
942 ether_sprintf(ni->ni_macaddr), in->in_station));
943 #else
944 DPRINTF(("%s mac %6D station %u\n", __func__,
945 ni->ni_macaddr, ":", in->in_station));
946 #endif
947 #if defined(__DragonFly__)
948 devfs_clone_bitmap_put(&sc->sc_unr, in->in_station);
949 #else
950 free_unr(sc->sc_unr, in->in_station);
951 #endif
952 }
953
954 sc->sc_node_free(ni);
955 }
956
957 /*
958 * Convert h/w rate code to IEEE rate code.
959 */
960 static int
961 iwi_cvtrate(int iwirate)
962 {
963 switch (iwirate) {
964 case IWI_RATE_DS1: return 2;
965 case IWI_RATE_DS2: return 4;
966 case IWI_RATE_DS5: return 11;
967 case IWI_RATE_DS11: return 22;
968 case IWI_RATE_OFDM6: return 12;
969 case IWI_RATE_OFDM9: return 18;
970 case IWI_RATE_OFDM12: return 24;
971 case IWI_RATE_OFDM18: return 36;
972 case IWI_RATE_OFDM24: return 48;
973 case IWI_RATE_OFDM36: return 72;
974 case IWI_RATE_OFDM48: return 96;
975 case IWI_RATE_OFDM54: return 108;
976 }
977 return 0;
978 }
979
980 /*
981 * The firmware automatically adapts the transmit speed. We report its current
982 * value here.
983 */
984 static void
985 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr)
986 {
987 struct ieee80211vap *vap = ifp->if_softc;
988 struct ieee80211com *ic = vap->iv_ic;
989 struct iwi_softc *sc = ic->ic_softc;
990 struct ieee80211_node *ni;
991
992 /* read current transmission rate from adapter */
993 ni = ieee80211_ref_node(vap->iv_bss);
994 ni->ni_txrate =
995 iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE));
996 ieee80211_free_node(ni);
997 ieee80211_media_status(ifp, imr);
998 }
999
1000 static int
1001 iwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1002 {
1003 struct iwi_vap *ivp = IWI_VAP(vap);
1004 struct ieee80211com *ic = vap->iv_ic;
1005 struct iwi_softc *sc = ic->ic_softc;
1006 IWI_LOCK_DECL;
1007
1008 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
1009 ieee80211_state_name[vap->iv_state],
1010 ieee80211_state_name[nstate], sc->flags));
1011
1012 IEEE80211_UNLOCK(ic);
1013 IWI_LOCK(sc);
1014 switch (nstate) {
1015 case IEEE80211_S_INIT:
1016 /*
1017 * NB: don't try to do this if iwi_stop_master has
1018 * shutdown the firmware and disabled interrupts.
1019 */
1020 if (vap->iv_state == IEEE80211_S_RUN &&
1021 (sc->flags & IWI_FLAG_FW_INITED))
1022 iwi_disassociate(sc, 0);
1023 break;
1024 case IEEE80211_S_AUTH:
1025 iwi_auth_and_assoc(sc, vap);
1026 break;
1027 case IEEE80211_S_RUN:
1028 if (vap->iv_opmode == IEEE80211_M_IBSS &&
1029 vap->iv_state == IEEE80211_S_SCAN) {
1030 /*
1031 * XXX when joining an ibss network we are called
1032 * with a SCAN -> RUN transition on scan complete.
1033 * Use that to call iwi_auth_and_assoc. On completing
1034 * the join we are then called again with an
1035 * AUTH -> RUN transition and we want to do nothing.
1036 * This is all totally bogus and needs to be redone.
1037 */
1038 iwi_auth_and_assoc(sc, vap);
1039 } else if (vap->iv_opmode == IEEE80211_M_MONITOR)
1040 ieee80211_runtask(ic, &sc->sc_monitortask);
1041 break;
1042 case IEEE80211_S_ASSOC:
1043 /*
1044 * If we are transitioning from AUTH then just wait
1045 * for the ASSOC status to come back from the firmware.
1046 * Otherwise we need to issue the association request.
1047 */
1048 if (vap->iv_state == IEEE80211_S_AUTH)
1049 break;
1050 iwi_auth_and_assoc(sc, vap);
1051 break;
1052 default:
1053 break;
1054 }
1055 IWI_UNLOCK(sc);
1056 IEEE80211_LOCK(ic);
1057 return ivp->iwi_newstate(vap, nstate, arg);
1058 }
1059
1060 /*
1061 * WME parameters coming from IEEE 802.11e specification. These values are
1062 * already declared in ieee80211_proto.c, but they are static so they can't
1063 * be reused here.
1064 */
1065 static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = {
1066 { 0, 3, 5, 7, 0 }, /* WME_AC_BE */
1067 { 0, 3, 5, 10, 0 }, /* WME_AC_BK */
1068 { 0, 2, 4, 5, 188 }, /* WME_AC_VI */
1069 { 0, 2, 3, 4, 102 } /* WME_AC_VO */
1070 };
1071
1072 static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = {
1073 { 0, 3, 4, 6, 0 }, /* WME_AC_BE */
1074 { 0, 3, 4, 10, 0 }, /* WME_AC_BK */
1075 { 0, 2, 3, 4, 94 }, /* WME_AC_VI */
1076 { 0, 2, 2, 3, 47 } /* WME_AC_VO */
1077 };
1078 #define IWI_EXP2(v) htole16((1 << (v)) - 1)
1079 #define IWI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v))
1080
1081 static void
1082 iwi_wme_init(struct iwi_softc *sc)
1083 {
1084 const struct wmeParams *wmep;
1085 int ac;
1086
1087 memset(sc->wme, 0, sizeof sc->wme);
1088 for (ac = 0; ac < WME_NUM_AC; ac++) {
1089 /* set WME values for CCK modulation */
1090 wmep = &iwi_wme_cck_params[ac];
1091 sc->wme[1].aifsn[ac] = wmep->wmep_aifsn;
1092 sc->wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1093 sc->wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1094 sc->wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1095 sc->wme[1].acm[ac] = wmep->wmep_acm;
1096
1097 /* set WME values for OFDM modulation */
1098 wmep = &iwi_wme_ofdm_params[ac];
1099 sc->wme[2].aifsn[ac] = wmep->wmep_aifsn;
1100 sc->wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1101 sc->wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1102 sc->wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1103 sc->wme[2].acm[ac] = wmep->wmep_acm;
1104 }
1105 }
1106
1107 static int
1108 iwi_wme_setparams(struct iwi_softc *sc)
1109 {
1110 struct ieee80211com *ic = &sc->sc_ic;
1111 const struct wmeParams *wmep;
1112 int ac;
1113
1114 for (ac = 0; ac < WME_NUM_AC; ac++) {
1115 /* set WME values for current operating mode */
1116 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac];
1117 sc->wme[0].aifsn[ac] = wmep->wmep_aifsn;
1118 sc->wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1119 sc->wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1120 sc->wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1121 sc->wme[0].acm[ac] = wmep->wmep_acm;
1122 }
1123
1124 DPRINTF(("Setting WME parameters\n"));
1125 return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, sc->wme, sizeof sc->wme);
1126 }
1127 #undef IWI_USEC
1128 #undef IWI_EXP2
1129
1130 static int
1131 iwi_wme_update(struct ieee80211com *ic)
1132 {
1133 struct iwi_softc *sc = ic->ic_softc;
1134 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1135 IWI_LOCK_DECL;
1136
1137 /*
1138 * We may be called to update the WME parameters in
1139 * the adapter at various places. If we're already
1140 * associated then initiate the request immediately;
1141 * otherwise we assume the params will get sent down
1142 * to the adapter as part of the work iwi_auth_and_assoc
1143 * does.
1144 */
1145 if (vap->iv_state == IEEE80211_S_RUN) {
1146 IWI_LOCK(sc);
1147 iwi_wme_setparams(sc);
1148 IWI_UNLOCK(sc);
1149 }
1150 return (0);
1151 }
1152
1153 static int
1154 iwi_wme_setie(struct iwi_softc *sc)
1155 {
1156 struct ieee80211_wme_info wme;
1157
1158 memset(&wme, 0, sizeof wme);
1159 wme.wme_id = IEEE80211_ELEMID_VENDOR;
1160 wme.wme_len = sizeof (struct ieee80211_wme_info) - 2;
1161 wme.wme_oui[0] = 0x00;
1162 wme.wme_oui[1] = 0x50;
1163 wme.wme_oui[2] = 0xf2;
1164 wme.wme_type = WME_OUI_TYPE;
1165 wme.wme_subtype = WME_INFO_OUI_SUBTYPE;
1166 wme.wme_version = WME_VERSION;
1167 wme.wme_info = 0;
1168
1169 DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len));
1170 return iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme);
1171 }
1172
1173 /*
1174 * Read 16 bits at address 'addr' from the serial EEPROM.
1175 */
1176 static uint16_t
1177 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr)
1178 {
1179 uint32_t tmp;
1180 uint16_t val;
1181 int n;
1182
1183 /* clock C once before the first command */
1184 IWI_EEPROM_CTL(sc, 0);
1185 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1186 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1187 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1188
1189 /* write start bit (1) */
1190 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1191 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1192
1193 /* write READ opcode (10) */
1194 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1195 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1196 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1197 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1198
1199 /* write address A7-A0 */
1200 for (n = 7; n >= 0; n--) {
1201 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1202 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D));
1203 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1204 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C);
1205 }
1206
1207 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1208
1209 /* read data Q15-Q0 */
1210 val = 0;
1211 for (n = 15; n >= 0; n--) {
1212 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1213 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1214 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL);
1215 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n;
1216 }
1217
1218 IWI_EEPROM_CTL(sc, 0);
1219
1220 /* clear Chip Select and clock C */
1221 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1222 IWI_EEPROM_CTL(sc, 0);
1223 IWI_EEPROM_CTL(sc, IWI_EEPROM_C);
1224
1225 return val;
1226 }
1227
1228 static void
1229 iwi_setcurchan(struct iwi_softc *sc, int chan)
1230 {
1231 struct ieee80211com *ic = &sc->sc_ic;
1232
1233 sc->curchan = chan;
1234 ieee80211_radiotap_chan_change(ic);
1235 }
1236
1237 static void
1238 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i,
1239 struct iwi_frame *frame)
1240 {
1241 struct ieee80211com *ic = &sc->sc_ic;
1242 struct mbuf *mnew, *m;
1243 struct ieee80211_node *ni;
1244 int type, error, framelen;
1245 int8_t rssi, nf;
1246 IWI_LOCK_DECL;
1247
1248 framelen = le16toh(frame->len);
1249 if (framelen < IEEE80211_MIN_LEN || framelen > MCLBYTES) {
1250 /*
1251 * XXX >MCLBYTES is bogus as it means the h/w dma'd
1252 * out of bounds; need to figure out how to limit
1253 * frame size in the firmware
1254 */
1255 /* XXX stat */
1256 DPRINTFN(1,
1257 ("drop rx frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1258 le16toh(frame->len), frame->chan, frame->rssi,
1259 frame->rssi_dbm));
1260 return;
1261 }
1262
1263 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1264 le16toh(frame->len), frame->chan, frame->rssi, frame->rssi_dbm));
1265
1266 if (frame->chan != sc->curchan)
1267 iwi_setcurchan(sc, frame->chan);
1268
1269 /*
1270 * Try to allocate a new mbuf for this ring element and load it before
1271 * processing the current mbuf. If the ring element cannot be loaded,
1272 * drop the received packet and reuse the old mbuf. In the unlikely
1273 * case that the old mbuf can't be reloaded either, explicitly panic.
1274 */
1275 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1276 if (mnew == NULL) {
1277 #if defined(__DragonFly__)
1278 ++ic->ic_ierrors;
1279 #else
1280 counter_u64_add(ic->ic_ierrors, 1);
1281 #endif
1282 return;
1283 }
1284
1285 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1286
1287 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1288 mtod(mnew, void *), MCLBYTES, iwi_dma_map_addr, &data->physaddr,
1289 0);
1290 if (error != 0) {
1291 m_freem(mnew);
1292
1293 /* try to reload the old mbuf */
1294 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1295 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
1296 &data->physaddr, 0);
1297 if (error != 0) {
1298 /* very unlikely that it will fail... */
1299 panic("%s: could not load old rx mbuf",
1300 device_get_name(sc->sc_dev));
1301 }
1302 #if defined(__DragonFly__)
1303 ++ic->ic_ierrors;
1304 #else
1305 counter_u64_add(ic->ic_ierrors, 1);
1306 #endif
1307 return;
1308 }
1309
1310 /*
1311 * New mbuf successfully loaded, update Rx ring and continue
1312 * processing.
1313 */
1314 m = data->m;
1315 data->m = mnew;
1316 CSR_WRITE_4(sc, data->reg, data->physaddr);
1317
1318 /* finalize mbuf */
1319 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) +
1320 sizeof (struct iwi_frame) + framelen;
1321
1322 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame));
1323
1324 rssi = frame->rssi_dbm;
1325 nf = -95;
1326 if (ieee80211_radiotap_active(ic)) {
1327 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap;
1328
1329 tap->wr_flags = 0;
1330 tap->wr_antsignal = rssi;
1331 tap->wr_antnoise = nf;
1332 tap->wr_rate = iwi_cvtrate(frame->rate);
1333 tap->wr_antenna = frame->antenna;
1334 }
1335 IWI_UNLOCK(sc);
1336
1337 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1338 if (ni != NULL) {
1339 type = ieee80211_input(ni, m, rssi, nf);
1340 ieee80211_free_node(ni);
1341 } else
1342 type = ieee80211_input_all(ic, m, rssi, nf);
1343
1344 IWI_LOCK(sc);
1345 if (sc->sc_softled) {
1346 /*
1347 * Blink for any data frame. Otherwise do a
1348 * heartbeat-style blink when idle. The latter
1349 * is mainly for station mode where we depend on
1350 * periodic beacon frames to trigger the poll event.
1351 */
1352 if (type == IEEE80211_FC0_TYPE_DATA) {
1353 sc->sc_rxrate = frame->rate;
1354 iwi_led_event(sc, IWI_LED_RX);
1355 } else if (ticks - sc->sc_ledevent >= sc->sc_ledidle)
1356 iwi_led_event(sc, IWI_LED_POLL);
1357 }
1358 }
1359
1360 /*
1361 * Check for an association response frame to see if QoS
1362 * has been negotiated. We parse just enough to figure
1363 * out if we're supposed to use QoS. The proper solution
1364 * is to pass the frame up so ieee80211_input can do the
1365 * work but that's made hard by how things currently are
1366 * done in the driver.
1367 */
1368 static void
1369 iwi_checkforqos(struct ieee80211vap *vap,
1370 const struct ieee80211_frame *wh, int len)
1371 {
1372 #define SUBTYPE(wh) ((wh)->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
1373 const uint8_t *frm, *efrm, *wme;
1374 struct ieee80211_node *ni;
1375 uint16_t capinfo, status, associd;
1376
1377 /* NB: +8 for capinfo, status, associd, and first ie */
1378 if (!(sizeof(*wh)+8 < len && len < IEEE80211_MAX_LEN) ||
1379 SUBTYPE(wh) != IEEE80211_FC0_SUBTYPE_ASSOC_RESP)
1380 return;
1381 /*
1382 * asresp frame format
1383 * [2] capability information
1384 * [2] status
1385 * [2] association ID
1386 * [tlv] supported rates
1387 * [tlv] extended supported rates
1388 * [tlv] WME
1389 */
1390 frm = (const uint8_t *)&wh[1];
1391 efrm = ((const uint8_t *) wh) + len;
1392
1393 capinfo = le16toh(*(const uint16_t *)frm);
1394 frm += 2;
1395 status = le16toh(*(const uint16_t *)frm);
1396 frm += 2;
1397 associd = le16toh(*(const uint16_t *)frm);
1398 frm += 2;
1399
1400 wme = NULL;
1401 while (efrm - frm > 1) {
1402 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
1403 switch (*frm) {
1404 case IEEE80211_ELEMID_VENDOR:
1405 if (iswmeoui(frm))
1406 wme = frm;
1407 break;
1408 }
1409 frm += frm[1] + 2;
1410 }
1411
1412 ni = ieee80211_ref_node(vap->iv_bss);
1413 ni->ni_capinfo = capinfo;
1414 ni->ni_associd = associd & 0x3fff;
1415 if (wme != NULL)
1416 ni->ni_flags |= IEEE80211_NODE_QOS;
1417 else
1418 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1419 ieee80211_free_node(ni);
1420 #undef SUBTYPE
1421 }
1422
1423 static void
1424 iwi_notif_link_quality(struct iwi_softc *sc, struct iwi_notif *notif)
1425 {
1426 struct iwi_notif_link_quality *lq;
1427 int len;
1428
1429 len = le16toh(notif->len);
1430
1431 DPRINTFN(5, ("Notification (%u) - len=%d, sizeof=%zu\n",
1432 notif->type,
1433 len,
1434 sizeof(struct iwi_notif_link_quality)
1435 ));
1436
1437 /* enforce length */
1438 if (len != sizeof(struct iwi_notif_link_quality)) {
1439 DPRINTFN(5, ("Notification: (%u) too short (%d)\n",
1440 notif->type,
1441 len));
1442 return;
1443 }
1444
1445 lq = (struct iwi_notif_link_quality *)(notif + 1);
1446 memcpy(&sc->sc_linkqual, lq, sizeof(sc->sc_linkqual));
1447 sc->sc_linkqual_valid = 1;
1448 }
1449
1450 /*
1451 * Task queue callbacks for iwi_notification_intr used to avoid LOR's.
1452 */
1453
1454 static void
1455 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif)
1456 {
1457 struct ieee80211com *ic = &sc->sc_ic;
1458 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1459 struct iwi_notif_scan_channel *chan;
1460 struct iwi_notif_scan_complete *scan;
1461 struct iwi_notif_authentication *auth;
1462 struct iwi_notif_association *assoc;
1463 struct iwi_notif_beacon_state *beacon;
1464
1465 switch (notif->type) {
1466 case IWI_NOTIF_TYPE_SCAN_CHANNEL:
1467 chan = (struct iwi_notif_scan_channel *)(notif + 1);
1468
1469 DPRINTFN(3, ("Scan of channel %u complete (%u)\n",
1470 ieee80211_ieee2mhz(chan->nchan, 0), chan->nchan));
1471
1472 /* Reset the timer, the scan is still going */
1473 sc->sc_state_timer = 3;
1474 break;
1475
1476 case IWI_NOTIF_TYPE_SCAN_COMPLETE:
1477 scan = (struct iwi_notif_scan_complete *)(notif + 1);
1478
1479 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan,
1480 scan->status));
1481
1482 IWI_STATE_END(sc, IWI_FW_SCANNING);
1483
1484 /*
1485 * Monitor mode works by doing a passive scan to set
1486 * the channel and enable rx. Because we don't want
1487 * to abort a scan lest the firmware crash we scan
1488 * for a short period of time and automatically restart
1489 * the scan when notified the sweep has completed.
1490 */
1491 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
1492 ieee80211_runtask(ic, &sc->sc_monitortask);
1493 break;
1494 }
1495
1496 if (scan->status == IWI_SCAN_COMPLETED) {
1497 /* NB: don't need to defer, net80211 does it for us */
1498 ieee80211_scan_next(vap);
1499 }
1500 break;
1501
1502 case IWI_NOTIF_TYPE_AUTHENTICATION:
1503 auth = (struct iwi_notif_authentication *)(notif + 1);
1504 switch (auth->state) {
1505 case IWI_AUTH_SUCCESS:
1506 DPRINTFN(2, ("Authentication succeeeded\n"));
1507 ieee80211_new_state(vap, IEEE80211_S_ASSOC, -1);
1508 break;
1509 case IWI_AUTH_FAIL:
1510 /*
1511 * These are delivered as an unsolicited deauth
1512 * (e.g. due to inactivity) or in response to an
1513 * associate request.
1514 */
1515 sc->flags &= ~IWI_FLAG_ASSOCIATED;
1516 if (vap->iv_state != IEEE80211_S_RUN) {
1517 DPRINTFN(2, ("Authentication failed\n"));
1518 vap->iv_stats.is_rx_auth_fail++;
1519 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1520 } else {
1521 DPRINTFN(2, ("Deauthenticated\n"));
1522 vap->iv_stats.is_rx_deauth++;
1523 }
1524 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1525 break;
1526 case IWI_AUTH_SENT_1:
1527 case IWI_AUTH_RECV_2:
1528 case IWI_AUTH_SEQ1_PASS:
1529 break;
1530 case IWI_AUTH_SEQ1_FAIL:
1531 DPRINTFN(2, ("Initial authentication handshake failed; "
1532 "you probably need shared key\n"));
1533 vap->iv_stats.is_rx_auth_fail++;
1534 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1535 /* XXX retry shared key when in auto */
1536 break;
1537 default:
1538 device_printf(sc->sc_dev,
1539 "unknown authentication state %u\n", auth->state);
1540 break;
1541 }
1542 break;
1543
1544 case IWI_NOTIF_TYPE_ASSOCIATION:
1545 assoc = (struct iwi_notif_association *)(notif + 1);
1546 switch (assoc->state) {
1547 case IWI_AUTH_SUCCESS:
1548 /* re-association, do nothing */
1549 break;
1550 case IWI_ASSOC_SUCCESS:
1551 DPRINTFN(2, ("Association succeeded\n"));
1552 sc->flags |= IWI_FLAG_ASSOCIATED;
1553 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1554 iwi_checkforqos(vap,
1555 (const struct ieee80211_frame *)(assoc+1),
1556 le16toh(notif->len) - sizeof(*assoc) - 1);
1557 ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
1558 break;
1559 case IWI_ASSOC_INIT:
1560 sc->flags &= ~IWI_FLAG_ASSOCIATED;
1561 switch (sc->fw_state) {
1562 case IWI_FW_ASSOCIATING:
1563 DPRINTFN(2, ("Association failed\n"));
1564 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1565 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1566 break;
1567
1568 case IWI_FW_DISASSOCIATING:
1569 DPRINTFN(2, ("Dissassociated\n"));
1570 IWI_STATE_END(sc, IWI_FW_DISASSOCIATING);
1571 vap->iv_stats.is_rx_disassoc++;
1572 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1573 break;
1574 }
1575 break;
1576 default:
1577 device_printf(sc->sc_dev,
1578 "unknown association state %u\n", assoc->state);
1579 break;
1580 }
1581 break;
1582
1583 case IWI_NOTIF_TYPE_BEACON:
1584 /* XXX check struct length */
1585 beacon = (struct iwi_notif_beacon_state *)(notif + 1);
1586
1587 DPRINTFN(5, ("Beacon state (%u, %u)\n",
1588 beacon->state, le32toh(beacon->number)));
1589
1590 if (beacon->state == IWI_BEACON_MISS) {
1591 /*
1592 * The firmware notifies us of every beacon miss
1593 * so we need to track the count against the
1594 * configured threshold before notifying the
1595 * 802.11 layer.
1596 * XXX try to roam, drop assoc only on much higher count
1597 */
1598 if (le32toh(beacon->number) >= vap->iv_bmissthreshold) {
1599 DPRINTF(("Beacon miss: %u >= %u\n",
1600 le32toh(beacon->number),
1601 vap->iv_bmissthreshold));
1602 vap->iv_stats.is_beacon_miss++;
1603 /*
1604 * It's pointless to notify the 802.11 layer
1605 * as it'll try to send a probe request (which
1606 * we'll discard) and then timeout and drop us
1607 * into scan state. Instead tell the firmware
1608 * to disassociate and then on completion we'll
1609 * kick the state machine to scan.
1610 */
1611 ieee80211_runtask(ic, &sc->sc_disassoctask);
1612 }
1613 }
1614 break;
1615
1616 case IWI_NOTIF_TYPE_CALIBRATION:
1617 case IWI_NOTIF_TYPE_NOISE:
1618 /* XXX handle? */
1619 DPRINTFN(5, ("Notification (%u)\n", notif->type));
1620 break;
1621 case IWI_NOTIF_TYPE_LINK_QUALITY:
1622 iwi_notif_link_quality(sc, notif);
1623 break;
1624
1625 default:
1626 DPRINTF(("unknown notification type %u flags 0x%x len %u\n",
1627 notif->type, notif->flags, le16toh(notif->len)));
1628 break;
1629 }
1630 }
1631
1632 static void
1633 iwi_rx_intr(struct iwi_softc *sc)
1634 {
1635 struct iwi_rx_data *data;
1636 struct iwi_hdr *hdr;
1637 uint32_t hw;
1638
1639 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX);
1640
1641 for (; sc->rxq.cur != hw;) {
1642 data = &sc->rxq.data[sc->rxq.cur];
1643
1644 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1645 BUS_DMASYNC_POSTREAD);
1646
1647 hdr = mtod(data->m, struct iwi_hdr *);
1648
1649 switch (hdr->type) {
1650 case IWI_HDR_TYPE_FRAME:
1651 iwi_frame_intr(sc, data, sc->rxq.cur,
1652 (struct iwi_frame *)(hdr + 1));
1653 break;
1654
1655 case IWI_HDR_TYPE_NOTIF:
1656 iwi_notification_intr(sc,
1657 (struct iwi_notif *)(hdr + 1));
1658 break;
1659
1660 default:
1661 device_printf(sc->sc_dev, "unknown hdr type %u\n",
1662 hdr->type);
1663 }
1664
1665 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1666
1667 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT;
1668 }
1669
1670 /* tell the firmware what we have processed */
1671 hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1;
1672 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw);
1673 }
1674
1675 static void
1676 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq)
1677 {
1678 struct iwi_tx_data *data;
1679 uint32_t hw;
1680
1681 hw = CSR_READ_4(sc, txq->csr_ridx);
1682
1683 while (txq->next != hw) {
1684 data = &txq->data[txq->next];
1685 DPRINTFN(15, ("tx done idx=%u\n", txq->next));
1686 bus_dmamap_sync(txq->data_dmat, data->map,
1687 BUS_DMASYNC_POSTWRITE);
1688 bus_dmamap_unload(txq->data_dmat, data->map);
1689 ieee80211_tx_complete(data->ni, data->m, 0);
1690 data->ni = NULL;
1691 data->m = NULL;
1692 txq->queued--;
1693 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT;
1694 }
1695 sc->sc_tx_timer = 0;
1696 if (sc->sc_softled)
1697 iwi_led_event(sc, IWI_LED_TX);
1698 iwi_start(sc);
1699 }
1700
1701 static void
1702 iwi_fatal_error_intr(struct iwi_softc *sc)
1703 {
1704 struct ieee80211com *ic = &sc->sc_ic;
1705 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1706
1707 device_printf(sc->sc_dev, "firmware error\n");
1708 if (vap != NULL)
1709 ieee80211_cancel_scan(vap);
1710 ieee80211_runtask(ic, &sc->sc_restarttask);
1711
1712 sc->flags &= ~IWI_FLAG_BUSY;
1713 sc->sc_busy_timer = 0;
1714 wakeup(sc);
1715 }
1716
1717 static void
1718 iwi_radio_off_intr(struct iwi_softc *sc)
1719 {
1720
1721 ieee80211_runtask(&sc->sc_ic, &sc->sc_radiofftask);
1722 }
1723
1724 static void
1725 iwi_intr(void *arg)
1726 {
1727 struct iwi_softc *sc = arg;
1728 uint32_t r;
1729 IWI_LOCK_DECL;
1730
1731 IWI_LOCK(sc);
1732
1733 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) {
1734 IWI_UNLOCK(sc);
1735 return;
1736 }
1737
1738 /* acknowledge interrupts */
1739 CSR_WRITE_4(sc, IWI_CSR_INTR, r);
1740
1741 if (r & IWI_INTR_FATAL_ERROR) {
1742 iwi_fatal_error_intr(sc);
1743 goto done;
1744 }
1745
1746 if (r & IWI_INTR_FW_INITED) {
1747 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)))
1748 wakeup(sc);
1749 }
1750
1751 if (r & IWI_INTR_RADIO_OFF)
1752 iwi_radio_off_intr(sc);
1753
1754 if (r & IWI_INTR_CMD_DONE) {
1755 sc->flags &= ~IWI_FLAG_BUSY;
1756 sc->sc_busy_timer = 0;
1757 wakeup(sc);
1758 }
1759
1760 if (r & IWI_INTR_TX1_DONE)
1761 iwi_tx_intr(sc, &sc->txq[0]);
1762
1763 if (r & IWI_INTR_TX2_DONE)
1764 iwi_tx_intr(sc, &sc->txq[1]);
1765
1766 if (r & IWI_INTR_TX3_DONE)
1767 iwi_tx_intr(sc, &sc->txq[2]);
1768
1769 if (r & IWI_INTR_TX4_DONE)
1770 iwi_tx_intr(sc, &sc->txq[3]);
1771
1772 if (r & IWI_INTR_RX_DONE)
1773 iwi_rx_intr(sc);
1774
1775 if (r & IWI_INTR_PARITY_ERROR) {
1776 /* XXX rate-limit */
1777 device_printf(sc->sc_dev, "parity error\n");
1778 }
1779 done:
1780 IWI_UNLOCK(sc);
1781 }
1782
1783 static int
1784 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len)
1785 {
1786 struct iwi_cmd_desc *desc;
1787
1788 IWI_LOCK_ASSERT(sc);
1789
1790 if (sc->flags & IWI_FLAG_BUSY) {
1791 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n",
1792 __func__, type);
1793 return EAGAIN;
1794 }
1795 sc->flags |= IWI_FLAG_BUSY;
1796 sc->sc_busy_timer = 2;
1797
1798 desc = &sc->cmdq.desc[sc->cmdq.cur];
1799
1800 desc->hdr.type = IWI_HDR_TYPE_COMMAND;
1801 desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1802 desc->type = type;
1803 desc->len = len;
1804 memcpy(desc->data, data, len);
1805
1806 bus_dmamap_sync(sc->cmdq.desc_dmat, sc->cmdq.desc_map,
1807 BUS_DMASYNC_PREWRITE);
1808
1809 DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur,
1810 type, len));
1811
1812 sc->cmdq.cur = (sc->cmdq.cur + 1) % IWI_CMD_RING_COUNT;
1813 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
1814
1815 #if defined(__DragonFly__)
1816 return lksleep(sc, &sc->sc_lock, 0, "iwicmd", hz);
1817 #else
1818 return msleep(sc, &sc->sc_mtx, 0, "iwicmd", hz);
1819 #endif
1820 }
1821
1822 static void
1823 iwi_write_ibssnode(struct iwi_softc *sc,
1824 const u_int8_t addr[IEEE80211_ADDR_LEN], int entry)
1825 {
1826 struct iwi_ibssnode node;
1827
1828 /* write node information into NIC memory */
1829 memset(&node, 0, sizeof node);
1830 IEEE80211_ADDR_COPY(node.bssid, addr);
1831 #if defined(__DragonFly__)
1832 DPRINTF(("%s mac %s station %u\n", __func__, ether_sprintf(node.bssid),
1833 entry));
1834 #else
1835 DPRINTF(("%s mac %6D station %u\n", __func__, node.bssid, ":", entry));
1836 #endif
1837
1838 CSR_WRITE_REGION_1(sc,
1839 IWI_CSR_NODE_BASE + entry * sizeof node,
1840 (uint8_t *)&node, sizeof node);
1841 }
1842
1843 static int
1844 iwi_tx_start(struct iwi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1845 int ac)
1846 {
1847 struct ieee80211vap *vap = ni->ni_vap;
1848 struct ieee80211com *ic = ni->ni_ic;
1849 struct iwi_node *in = (struct iwi_node *)ni;
1850 const struct ieee80211_frame *wh;
1851 struct ieee80211_key *k;
1852 const struct chanAccParams *cap;
1853 struct iwi_tx_ring *txq = &sc->txq[ac];
1854 struct iwi_tx_data *data;
1855 struct iwi_tx_desc *desc;
1856 struct mbuf *mnew;
1857 bus_dma_segment_t segs[IWI_MAX_NSEG];
1858 int error, nsegs, hdrlen, i;
1859 int ismcast, flags, xflags, staid;
1860
1861 IWI_LOCK_ASSERT(sc);
1862 wh = mtod(m0, const struct ieee80211_frame *);
1863 /* NB: only data frames use this path */
1864 hdrlen = ieee80211_hdrsize(wh);
1865 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1866 flags = xflags = 0;
1867
1868 if (!ismcast)
1869 flags |= IWI_DATA_FLAG_NEED_ACK;
1870 if (vap->iv_flags & IEEE80211_F_SHPREAMBLE)
1871 flags |= IWI_DATA_FLAG_SHPREAMBLE;
1872 if (IEEE80211_QOS_HAS_SEQ(wh)) {
1873 xflags |= IWI_DATA_XFLAG_QOS;
1874 cap = &ic->ic_wme.wme_chanParams;
1875 if (!cap->cap_wmeParams[ac].wmep_noackPolicy)
1876 flags &= ~IWI_DATA_FLAG_NEED_ACK;
1877 }
1878
1879 /*
1880 * This is only used in IBSS mode where the firmware expect an index
1881 * in a h/w table instead of a destination address.
1882 */
1883 if (vap->iv_opmode == IEEE80211_M_IBSS) {
1884 if (!ismcast) {
1885 if (in->in_station == -1) {
1886 #if defined(__DragonFly__)
1887 in->in_station = devfs_clone_bitmap_get(&sc->sc_unr,
1888 IWI_MAX_IBSSNODE-1);
1889 #else
1890 in->in_station = alloc_unr(sc->sc_unr);
1891 #endif
1892 if (in->in_station == -1) {
1893 /* h/w table is full */
1894 if_inc_counter(ni->ni_vap->iv_ifp,
1895 IFCOUNTER_OERRORS, 1);
1896 m_freem(m0);
1897 ieee80211_free_node(ni);
1898 return 0;
1899 }
1900 iwi_write_ibssnode(sc,
1901 ni->ni_macaddr, in->in_station);
1902 }
1903 staid = in->in_station;
1904 } else {
1905 /*
1906 * Multicast addresses have no associated node
1907 * so there will be no station entry. We reserve
1908 * entry 0 for one mcast address and use that.
1909 * If there are many being used this will be
1910 * expensive and we'll need to do a better job
1911 * but for now this handles the broadcast case.
1912 */
1913 if (!IEEE80211_ADDR_EQ(wh->i_addr1, sc->sc_mcast)) {
1914 IEEE80211_ADDR_COPY(sc->sc_mcast, wh->i_addr1);
1915 iwi_write_ibssnode(sc, sc->sc_mcast, 0);
1916 }
1917 staid = 0;
1918 }
1919 } else
1920 staid = 0;
1921
1922 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1923 k = ieee80211_crypto_encap(ni, m0);
1924 if (k == NULL) {
1925 m_freem(m0);
1926 return ENOBUFS;
1927 }
1928
1929 /* packet header may have moved, reset our local pointer */
1930 wh = mtod(m0, struct ieee80211_frame *);
1931 }
1932
1933 if (ieee80211_radiotap_active_vap(vap)) {
1934 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap;
1935
1936 tap->wt_flags = 0;
1937
1938 ieee80211_radiotap_tx(vap, m0);
1939 }
1940
1941 data = &txq->data[txq->cur];
1942 desc = &txq->desc[txq->cur];
1943
1944 /* save and trim IEEE802.11 header */
1945 m_copydata(m0, 0, hdrlen, (caddr_t)&desc->wh);
1946 m_adj(m0, hdrlen);
1947
1948 #if defined(__DragonFly__)
1949 error = bus_dmamap_load_mbuf_segment(txq->data_dmat, data->map,
1950 m0, segs, 1, &nsegs, BUS_DMA_NOWAIT);
1951 #else
1952 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, m0, segs,
1953 &nsegs, 0);
1954 #endif
1955 if (error != 0 && error != EFBIG) {
1956 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1957 error);
1958 m_freem(m0);
1959 return error;
1960 }
1961 if (error != 0) {
1962 mnew = m_defrag(m0, M_NOWAIT);
1963 if (mnew == NULL) {
1964 device_printf(sc->sc_dev,
1965 "could not defragment mbuf\n");
1966 m_freem(m0);
1967 return ENOBUFS;
1968 }
1969 m0 = mnew;
1970
1971 #if defined(__DragonFly__)
1972 error = bus_dmamap_load_mbuf_segment(txq->data_dmat,
1973 data->map, m0, segs, 1, &nsegs, BUS_DMA_NOWAIT);
1974 #else
1975 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map,
1976 m0, segs, &nsegs, 0);
1977 #endif
1978 if (error != 0) {
1979 device_printf(sc->sc_dev,
1980 "could not map mbuf (error %d)\n", error);
1981 m_freem(m0);
1982 return error;
1983 }
1984 }
1985
1986 data->m = m0;
1987 data->ni = ni;
1988
1989 desc->hdr.type = IWI_HDR_TYPE_DATA;
1990 desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1991 desc->station = staid;
1992 desc->cmd = IWI_DATA_CMD_TX;
1993 desc->len = htole16(m0->m_pkthdr.len);
1994 desc->flags = flags;
1995 desc->xflags = xflags;
1996
1997 #if 0
1998 if (vap->iv_flags & IEEE80211_F_PRIVACY)
1999 desc->wep_txkey = vap->iv_def_txkey;
2000 else
2001 #endif
2002 desc->flags |= IWI_DATA_FLAG_NO_WEP;
2003
2004 desc->nseg = htole32(nsegs);
2005 for (i = 0; i < nsegs; i++) {
2006 desc->seg_addr[i] = htole32(segs[i].ds_addr);
2007 desc->seg_len[i] = htole16(segs[i].ds_len);
2008 }
2009
2010 bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
2011 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE);
2012
2013 DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n",
2014 ac, txq->cur, le16toh(desc->len), nsegs));
2015
2016 txq->queued++;
2017 txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT;
2018 CSR_WRITE_4(sc, txq->csr_widx, txq->cur);
2019
2020 return 0;
2021 }
2022
2023 static int
2024 iwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
2025 const struct ieee80211_bpf_params *params)
2026 {
2027 /* no support; just discard */
2028 m_freem(m);
2029 ieee80211_free_node(ni);
2030 return 0;
2031 }
2032
2033 static int
2034 iwi_transmit(struct ieee80211com *ic, struct mbuf *m)
2035 {
2036 struct iwi_softc *sc = ic->ic_softc;
2037 int error;
2038 IWI_LOCK_DECL;
2039
2040 IWI_LOCK(sc);
2041 if (!sc->sc_running) {
2042 IWI_UNLOCK(sc);
2043 return (ENXIO);
2044 }
2045 error = mbufq_enqueue(&sc->sc_snd, m);
2046 if (error) {
2047 IWI_UNLOCK(sc);
2048 return (error);
2049 }
2050 iwi_start(sc);
2051 IWI_UNLOCK(sc);
2052 return (0);
2053 }
2054
2055 static void
2056 iwi_start(struct iwi_softc *sc)
2057 {
2058 struct mbuf *m;
2059 struct ieee80211_node *ni;
2060 int ac;
2061
2062 IWI_LOCK_ASSERT(sc);
2063
2064 while ((m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
2065 ac = M_WME_GETAC(m);
2066 if (sc->txq[ac].queued > IWI_TX_RING_COUNT - 8) {
2067 /* there is no place left in this ring; tail drop */
2068 /* XXX tail drop */
2069 mbufq_prepend(&sc->sc_snd, m);
2070 break;
2071 }
2072 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
2073 if (iwi_tx_start(sc, m, ni, ac) != 0) {
2074 ieee80211_free_node(ni);
2075 if_inc_counter(ni->ni_vap->iv_ifp,
2076 IFCOUNTER_OERRORS, 1);
2077 break;
2078 }
2079 sc->sc_tx_timer = 5;
2080 }
2081 }
2082
2083 static void
2084 iwi_watchdog(void *arg)
2085 {
2086 struct iwi_softc *sc = arg;
2087 struct ieee80211com *ic = &sc->sc_ic;
2088
2089 IWI_LOCK_ASSERT(sc);
2090
2091 if (sc->sc_tx_timer > 0) {
2092 if (--sc->sc_tx_timer == 0) {
2093 device_printf(sc->sc_dev, "device timeout\n");
2094 #if defined(__DragonFly__)
2095 ++ic->ic_oerrors;
2096 #else
2097 counter_u64_add(ic->ic_oerrors, 1);
2098 #endif
2099 ieee80211_runtask(ic, &sc->sc_restarttask);
2100 }
2101 }
2102 if (sc->sc_state_timer > 0) {
2103 if (--sc->sc_state_timer == 0) {
2104 device_printf(sc->sc_dev,
2105 "firmware stuck in state %d, resetting\n",
2106 sc->fw_state);
2107 if (sc->fw_state == IWI_FW_SCANNING)
2108 ieee80211_cancel_scan(TAILQ_FIRST(&ic->ic_vaps));
2109 ieee80211_runtask(ic, &sc->sc_restarttask);
2110 sc->sc_state_timer = 3;
2111 }
2112 }
2113 if (sc->sc_busy_timer > 0) {
2114 if (--sc->sc_busy_timer == 0) {
2115 device_printf(sc->sc_dev,
2116 "firmware command timeout, resetting\n");
2117 ieee80211_runtask(ic, &sc->sc_restarttask);
2118 }
2119 }
2120 callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
2121 }
2122
2123 static void
2124 iwi_parent(struct ieee80211com *ic)
2125 {
2126 struct iwi_softc *sc = ic->ic_softc;
2127 int startall = 0;
2128 IWI_LOCK_DECL;
2129
2130 IWI_LOCK(sc);
2131 if (ic->ic_nrunning > 0) {
2132 if (!sc->sc_running) {
2133 iwi_init_locked(sc);
2134 startall = 1;
2135 }
2136 } else if (sc->sc_running)
2137 iwi_stop_locked(sc);
2138 IWI_UNLOCK(sc);
2139 if (startall)
2140 ieee80211_start_all(ic);
2141 }
2142
2143 static void
2144 iwi_stop_master(struct iwi_softc *sc)
2145 {
2146 uint32_t tmp;
2147 int ntries;
2148
2149 /* disable interrupts */
2150 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0);
2151
2152 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER);
2153 for (ntries = 0; ntries < 5; ntries++) {
2154 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2155 break;
2156 DELAY(10);
2157 }
2158 if (ntries == 5)
2159 device_printf(sc->sc_dev, "timeout waiting for master\n");
2160
2161 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2162 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET);
2163
2164 sc->flags &= ~IWI_FLAG_FW_INITED;
2165 }
2166
2167 static int
2168 iwi_reset(struct iwi_softc *sc)
2169 {
2170 uint32_t tmp;
2171 int i, ntries;
2172
2173 iwi_stop_master(sc);
2174
2175 tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2176 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2177
2178 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST);
2179
2180 /* wait for clock stabilization */
2181 for (ntries = 0; ntries < 1000; ntries++) {
2182 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY)
2183 break;
2184 DELAY(200);
2185 }
2186 if (ntries == 1000) {
2187 device_printf(sc->sc_dev,
2188 "timeout waiting for clock stabilization\n");
2189 return EIO;
2190 }
2191
2192 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2193 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SOFT_RESET);
2194
2195 DELAY(10);
2196
2197 tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2198 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2199
2200 /* clear NIC memory */
2201 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0);
2202 for (i = 0; i < 0xc000; i++)
2203 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2204
2205 return 0;
2206 }
2207
2208 static const struct iwi_firmware_ohdr *
2209 iwi_setup_ofw(struct iwi_softc *sc, struct iwi_fw *fw)
2210 {
2211 const struct firmware *fp = fw->fp;
2212 const struct iwi_firmware_ohdr *hdr;
2213
2214 if (fp->datasize < sizeof (struct iwi_firmware_ohdr)) {
2215 device_printf(sc->sc_dev, "image '%s' too small\n", fp->name);
2216 return NULL;
2217 }
2218 hdr = (const struct iwi_firmware_ohdr *)fp->data;
2219 if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) ||
2220 (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) {
2221 device_printf(sc->sc_dev, "version for '%s' %d.%d != %d.%d\n",
2222 fp->name, IWI_FW_GET_MAJOR(le32toh(hdr->version)),
2223 IWI_FW_GET_MINOR(le32toh(hdr->version)), IWI_FW_REQ_MAJOR,
2224 IWI_FW_REQ_MINOR);
2225 return NULL;
2226 }
2227 fw->data = ((const char *) fp->data) + sizeof(struct iwi_firmware_ohdr);
2228 fw->size = fp->datasize - sizeof(struct iwi_firmware_ohdr);
2229 fw->name = fp->name;
2230 return hdr;
2231 }
2232
2233 static const struct iwi_firmware_ohdr *
2234 iwi_setup_oucode(struct iwi_softc *sc, struct iwi_fw *fw)
2235 {
2236 const struct iwi_firmware_ohdr *hdr;
2237
2238 hdr = iwi_setup_ofw(sc, fw);
2239 if (hdr != NULL && le32toh(hdr->mode) != IWI_FW_MODE_UCODE) {
2240 device_printf(sc->sc_dev, "%s is not a ucode image\n",
2241 fw->name);
2242 hdr = NULL;
2243 }
2244 return hdr;
2245 }
2246
2247 static void
2248 iwi_getfw(struct iwi_fw *fw, const char *fwname,
2249 struct iwi_fw *uc, const char *ucname)
2250 {
2251 if (fw->fp == NULL)
2252 fw->fp = firmware_get(fwname);
2253 /* NB: pre-3.0 ucode is packaged separately */
2254 if (uc->fp == NULL && fw->fp != NULL && fw->fp->version < 300)
2255 uc->fp = firmware_get(ucname);
2256 }
2257
2258 /*
2259 * Get the required firmware images if not already loaded.
2260 * Note that we hold firmware images so long as the device
2261 * is marked up in case we need to reload them on device init.
2262 * This is necessary because we re-init the device sometimes
2263 * from a context where we cannot read from the filesystem
2264 * (e.g. from the taskqueue thread when rfkill is re-enabled).
2265 * XXX return 0 on success, 1 on error.
2266 *
2267 * NB: the order of get'ing and put'ing images here is
2268 * intentional to support handling firmware images bundled
2269 * by operating mode and/or all together in one file with
2270 * the boot firmware as "master".
2271 */
2272 static int
2273 iwi_get_firmware(struct iwi_softc *sc, enum ieee80211_opmode opmode)
2274 {
2275 const struct iwi_firmware_hdr *hdr;
2276 const struct firmware *fp;
2277
2278 /* invalidate cached firmware on mode change */
2279 if (sc->fw_mode != opmode)
2280 iwi_put_firmware(sc);
2281
2282 switch (opmode) {
2283 case IEEE80211_M_STA:
2284 iwi_getfw(&sc->fw_fw, "iwi_bss", &sc->fw_uc, "iwi_ucode_bss");
2285 break;
2286 case IEEE80211_M_IBSS:
2287 iwi_getfw(&sc->fw_fw, "iwi_ibss", &sc->fw_uc, "iwi_ucode_ibss");
2288 break;
2289 case IEEE80211_M_MONITOR:
2290 iwi_getfw(&sc->fw_fw, "iwi_monitor",
2291 &sc->fw_uc, "iwi_ucode_monitor");
2292 break;
2293 default:
2294 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode);
2295 return EINVAL;
2296 }
2297 fp = sc->fw_fw.fp;
2298 if (fp == NULL) {
2299 device_printf(sc->sc_dev, "could not load firmware\n");
2300 goto bad;
2301 }
2302 if (fp->version < 300) {
2303 /*
2304 * Firmware prior to 3.0 was packaged as separate
2305 * boot, firmware, and ucode images. Verify the
2306 * ucode image was read in, retrieve the boot image
2307 * if needed, and check version stamps for consistency.
2308 * The version stamps in the data are also checked
2309 * above; this is a bit paranoid but is a cheap
2310 * safeguard against mis-packaging.
2311 */
2312 if (sc->fw_uc.fp == NULL) {
2313 device_printf(sc->sc_dev, "could not load ucode\n");
2314 goto bad;
2315 }
2316 if (sc->fw_boot.fp == NULL) {
2317 sc->fw_boot.fp = firmware_get("iwi_boot");
2318 if (sc->fw_boot.fp == NULL) {
2319 device_printf(sc->sc_dev,
2320 "could not load boot firmware\n");
2321 goto bad;
2322 }
2323 }
2324 if (sc->fw_boot.fp->version != sc->fw_fw.fp->version ||
2325 sc->fw_boot.fp->version != sc->fw_uc.fp->version) {
2326 device_printf(sc->sc_dev,
2327 "firmware version mismatch: "
2328 "'%s' is %d, '%s' is %d, '%s' is %d\n",
2329 sc->fw_boot.fp->name, sc->fw_boot.fp->version,
2330 sc->fw_uc.fp->name, sc->fw_uc.fp->version,
2331 sc->fw_fw.fp->name, sc->fw_fw.fp->version
2332 );
2333 goto bad;
2334 }
2335 /*
2336 * Check and setup each image.
2337 */
2338 if (iwi_setup_oucode(sc, &sc->fw_uc) == NULL ||
2339 iwi_setup_ofw(sc, &sc->fw_boot) == NULL ||
2340 iwi_setup_ofw(sc, &sc->fw_fw) == NULL)
2341 goto bad;
2342 } else {
2343 /*
2344 * Check and setup combined image.
2345 */
2346 if (fp->datasize < sizeof(struct iwi_firmware_hdr)) {
2347 device_printf(sc->sc_dev, "image '%s' too small\n",
2348 fp->name);
2349 goto bad;
2350 }
2351 hdr = (const struct iwi_firmware_hdr *)fp->data;
2352 if (fp->datasize < sizeof(*hdr) + le32toh(hdr->bsize) + le32toh(hdr->usize)
2353 + le32toh(hdr->fsize)) {
2354 device_printf(sc->sc_dev, "image '%s' too small (2)\n",
2355 fp->name);
2356 goto bad;
2357 }
2358 sc->fw_boot.data = ((const char *) fp->data) + sizeof(*hdr);
2359 sc->fw_boot.size = le32toh(hdr->bsize);
2360 sc->fw_boot.name = fp->name;
2361 sc->fw_uc.data = sc->fw_boot.data + sc->fw_boot.size;
2362 sc->fw_uc.size = le32toh(hdr->usize);
2363 sc->fw_uc.name = fp->name;
2364 sc->fw_fw.data = sc->fw_uc.data + sc->fw_uc.size;
2365 sc->fw_fw.size = le32toh(hdr->fsize);
2366 sc->fw_fw.name = fp->name;
2367 }
2368 #if 0
2369 device_printf(sc->sc_dev, "boot %d ucode %d fw %d bytes\n",
2370 sc->fw_boot.size, sc->fw_uc.size, sc->fw_fw.size);
2371 #endif
2372
2373 sc->fw_mode = opmode;
2374 return 0;
2375 bad:
2376 iwi_put_firmware(sc);
2377 return 1;
2378 }
2379
2380 static void
2381 iwi_put_fw(struct iwi_fw *fw)
2382 {
2383 if (fw->fp != NULL) {
2384 firmware_put(fw->fp, FIRMWARE_UNLOAD);
2385 fw->fp = NULL;
2386 }
2387 fw->data = NULL;
2388 fw->size = 0;
2389 fw->name = NULL;
2390 }
2391
2392 /*
2393 * Release any cached firmware images.
2394 */
2395 static void
2396 iwi_put_firmware(struct iwi_softc *sc)
2397 {
2398 iwi_put_fw(&sc->fw_uc);
2399 iwi_put_fw(&sc->fw_fw);
2400 iwi_put_fw(&sc->fw_boot);
2401 }
2402
2403 static int
2404 iwi_load_ucode(struct iwi_softc *sc, const struct iwi_fw *fw)
2405 {
2406 uint32_t tmp;
2407 const uint16_t *w;
2408 const char *uc = fw->data;
2409 size_t size = fw->size;
2410 int i, ntries, error;
2411
2412 IWI_LOCK_ASSERT(sc);
2413 error = 0;
2414 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
2415 IWI_RST_STOP_MASTER);
2416 for (ntries = 0; ntries < 5; ntries++) {
2417 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2418 break;
2419 DELAY(10);
2420 }
2421 if (ntries == 5) {
2422 device_printf(sc->sc_dev, "timeout waiting for master\n");
2423 error = EIO;
2424 goto fail;
2425 }
2426
2427 MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
2428 DELAY(5000);
2429
2430 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2431 tmp &= ~IWI_RST_PRINCETON_RESET;
2432 CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2433
2434 DELAY(5000);
2435 MEM_WRITE_4(sc, 0x3000e0, 0);
2436 DELAY(1000);
2437 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 1);
2438 DELAY(1000);
2439 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 0);
2440 DELAY(1000);
2441 MEM_WRITE_1(sc, 0x200000, 0x00);
2442 MEM_WRITE_1(sc, 0x200000, 0x40);
2443 DELAY(1000);
2444
2445 /* write microcode into adapter memory */
2446 for (w = (const uint16_t *)uc; size > 0; w++, size -= 2)
2447 MEM_WRITE_2(sc, 0x200010, htole16(*w));
2448
2449 MEM_WRITE_1(sc, 0x200000, 0x00);
2450 MEM_WRITE_1(sc, 0x200000, 0x80);
2451
2452 /* wait until we get an answer */
2453 for (ntries = 0; ntries < 100; ntries++) {
2454 if (MEM_READ_1(sc, 0x200000) & 1)
2455 break;
2456 DELAY(100);
2457 }
2458 if (ntries == 100) {
2459 device_printf(sc->sc_dev,
2460 "timeout waiting for ucode to initialize\n");
2461 error = EIO;
2462 goto fail;
2463 }
2464
2465 /* read the answer or the firmware will not initialize properly */
2466 for (i = 0; i < 7; i++)
2467 MEM_READ_4(sc, 0x200004);
2468
2469 MEM_WRITE_1(sc, 0x200000, 0x00);
2470
2471 fail:
2472 return error;
2473 }
2474
2475 /* macro to handle unaligned little endian data in firmware image */
2476 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2477
2478 static int
2479 iwi_load_firmware(struct iwi_softc *sc, const struct iwi_fw *fw)
2480 {
2481 u_char *p, *end;
2482 uint32_t sentinel, ctl, src, dst, sum, len, mlen, tmp;
2483 int ntries, error;
2484
2485 IWI_LOCK_ASSERT(sc);
2486
2487 /* copy firmware image to DMA memory */
2488 memcpy(sc->fw_virtaddr, fw->data, fw->size);
2489
2490 /* make sure the adapter will get up-to-date values */
2491 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_PREWRITE);
2492
2493 /* tell the adapter where the command blocks are stored */
2494 MEM_WRITE_4(sc, 0x3000a0, 0x27000);
2495
2496 /*
2497 * Store command blocks into adapter's internal memory using register
2498 * indirections. The adapter will read the firmware image through DMA
2499 * using information stored in command blocks.
2500 */
2501 src = sc->fw_physaddr;
2502 p = sc->fw_virtaddr;
2503 end = p + fw->size;
2504 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000);
2505
2506 while (p < end) {
2507 dst = GETLE32(p); p += 4; src += 4;
2508 len = GETLE32(p); p += 4; src += 4;
2509 p += len;
2510
2511 while (len > 0) {
2512 mlen = min(len, IWI_CB_MAXDATALEN);
2513
2514 ctl = IWI_CB_DEFAULT_CTL | mlen;
2515 sum = ctl ^ src ^ dst;
2516
2517 /* write a command block */
2518 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl);
2519 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src);
2520 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst);
2521 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum);
2522
2523 src += mlen;
2524 dst += mlen;
2525 len -= mlen;
2526 }
2527 }
2528
2529 /* write a fictive final command block (sentinel) */
2530 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR);
2531 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2532
2533 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2534 tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER);
2535 CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2536
2537 /* tell the adapter to start processing command blocks */
2538 MEM_WRITE_4(sc, 0x3000a4, 0x540100);
2539
2540 /* wait until the adapter reaches the sentinel */
2541 for (ntries = 0; ntries < 400; ntries++) {
2542 if (MEM_READ_4(sc, 0x3000d0) >= sentinel)
2543 break;
2544 DELAY(100);
2545 }
2546 /* sync dma, just in case */
2547 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_POSTWRITE);
2548 if (ntries == 400) {
2549 device_printf(sc->sc_dev,
2550 "timeout processing command blocks for %s firmware\n",
2551 fw->name);
2552 return EIO;
2553 }
2554
2555 /* we're done with command blocks processing */
2556 MEM_WRITE_4(sc, 0x3000a4, 0x540c00);
2557
2558 /* allow interrupts so we know when the firmware is ready */
2559 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK);
2560
2561 /* tell the adapter to initialize the firmware */
2562 CSR_WRITE_4(sc, IWI_CSR_RST, 0);
2563
2564 tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2565 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY);
2566
2567 /* wait at most one second for firmware initialization to complete */
2568 #if defined(__DragonFly__)
2569 if ((error = lksleep(sc, &sc->sc_lock, 0, "iwiinit", hz)) != 0) {
2570 #else
2571 if ((error = msleep(sc, &sc->sc_mtx, 0, "iwiinit", hz)) != 0) {
2572 #endif
2573 device_printf(sc->sc_dev, "timeout waiting for %s firmware "
2574 "initialization to complete\n", fw->name);
2575 }
2576
2577 return error;
2578 }
2579
2580 static int
2581 iwi_setpowermode(struct iwi_softc *sc, struct ieee80211vap *vap)
2582 {
2583 uint32_t data;
2584
2585 if (vap->iv_flags & IEEE80211_F_PMGTON) {
2586 /* XXX set more fine-grained operation */
2587 data = htole32(IWI_POWER_MODE_MAX);
2588 } else
2589 data = htole32(IWI_POWER_MODE_CAM);
2590
2591 DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2592 return iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data);
2593 }
2594
2595 static int
2596 iwi_setwepkeys(struct iwi_softc *sc, struct ieee80211vap *vap)
2597 {
2598 struct iwi_wep_key wepkey;
2599 struct ieee80211_key *wk;
2600 int error, i;
2601
2602 for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2603 wk = &vap->iv_nw_keys[i];
2604
2605 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY;
2606 wepkey.idx = i;
2607 wepkey.len = wk->wk_keylen;
2608 memset(wepkey.key, 0, sizeof wepkey.key);
2609 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2610 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2611 wepkey.len));
2612 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey,
2613 sizeof wepkey);
2614 if (error != 0)
2615 return error;
2616 }
2617 return 0;
2618 }
2619
2620 static int
2621 iwi_config(struct iwi_softc *sc)
2622 {
2623 struct ieee80211com *ic = &sc->sc_ic;
2624 struct iwi_configuration config;
2625 struct iwi_rateset rs;
2626 struct iwi_txpower power;
2627 uint32_t data;
2628 int error, i;
2629
2630 IWI_LOCK_ASSERT(sc);
2631
2632 #if defined(__DragonFly__)
2633 DPRINTF(("Setting MAC address to %s\n", ether_sprintf(ic->ic_macaddr)));
2634 #else
2635 DPRINTF(("Setting MAC address to %6D\n", ic->ic_macaddr, ":"));
2636 #endif
2637 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_macaddr,
2638 IEEE80211_ADDR_LEN);
2639 if (error != 0)
2640 return error;
2641
2642 memset(&config, 0, sizeof config);
2643 config.bluetooth_coexistence = sc->bluetooth;
2644 config.silence_threshold = 0x1e;
2645 config.antenna = sc->antenna;
2646 config.multicast_enabled = 1;
2647 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2648 config.disable_unicast_decryption = 1;
2649 config.disable_multicast_decryption = 1;
2650 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2651 config.allow_invalid_frames = 1;
2652 config.allow_beacon_and_probe_resp = 1;
2653 config.allow_mgt = 1;
2654 }
2655 DPRINTF(("Configuring adapter\n"));
2656 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2657 if (error != 0)
2658 return error;
2659 if (ic->ic_opmode == IEEE80211_M_IBSS) {
2660 power.mode = IWI_MODE_11B;
2661 power.nchan = 11;
2662 for (i = 0; i < 11; i++) {
2663 power.chan[i].chan = i + 1;
2664 power.chan[i].power = IWI_TXPOWER_MAX;
2665 }
2666 DPRINTF(("Setting .11b channels tx power\n"));
2667 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2668 if (error != 0)
2669 return error;
2670
2671 power.mode = IWI_MODE_11G;
2672 DPRINTF(("Setting .11g channels tx power\n"));
2673 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2674 if (error != 0)
2675 return error;
2676 }
2677
2678 memset(&rs, 0, sizeof rs);
2679 rs.mode = IWI_MODE_11G;
2680 rs.type = IWI_RATESET_TYPE_SUPPORTED;
2681 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates;
2682 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates,
2683 rs.nrates);
2684 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates));
2685 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2686 if (error != 0)
2687 return error;
2688
2689 memset(&rs, 0, sizeof rs);
2690 rs.mode = IWI_MODE_11A;
2691 rs.type = IWI_RATESET_TYPE_SUPPORTED;
2692 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates;
2693 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates,
2694 rs.nrates);
2695 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates));
2696 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2697 if (error != 0)
2698 return error;
2699
2700 data = htole32(karc4random());
2701 DPRINTF(("Setting initialization vector to %u\n", le32toh(data)));
2702 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data);
2703 if (error != 0)
2704 return error;
2705
2706 /* enable adapter */
2707 DPRINTF(("Enabling adapter\n"));
2708 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0);
2709 }
2710
2711 static __inline void
2712 set_scan_type(struct iwi_scan_ext *scan, int ix, int scan_type)
2713 {
2714 uint8_t *st = &scan->scan_type[ix / 2];
2715 if (ix % 2)
2716 *st = (*st & 0xf0) | ((scan_type & 0xf) << 0);
2717 else
2718 *st = (*st & 0x0f) | ((scan_type & 0xf) << 4);
2719 }
2720
2721 static int
2722 scan_type(const struct ieee80211_scan_state *ss,
2723 const struct ieee80211_channel *chan)
2724 {
2725 /* We can only set one essid for a directed scan */
2726 if (ss->ss_nssid != 0)
2727 return IWI_SCAN_TYPE_BDIRECTED;
2728 if ((ss->ss_flags & IEEE80211_SCAN_ACTIVE) &&
2729 (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0)
2730 return IWI_SCAN_TYPE_BROADCAST;
2731 return IWI_SCAN_TYPE_PASSIVE;
2732 }
2733
2734 static __inline int
2735 scan_band(const struct ieee80211_channel *c)
2736 {
2737 return IEEE80211_IS_CHAN_5GHZ(c) ? IWI_CHAN_5GHZ : IWI_CHAN_2GHZ;
2738 }
2739
2740 static void
2741 iwi_monitor_scan(void *arg, int npending)
2742 {
2743 struct iwi_softc *sc = arg;
2744 IWI_LOCK_DECL;
2745
2746 IWI_LOCK(sc);
2747 (void) iwi_scanchan(sc, 2000, 0);
2748 IWI_UNLOCK(sc);
2749 }
2750
2751 /*
2752 * Start a scan on the current channel or all channels.
2753 */
2754 static int
2755 iwi_scanchan(struct iwi_softc *sc, unsigned long maxdwell, int allchan)
2756 {
2757 struct ieee80211com *ic = &sc->sc_ic;
2758 struct ieee80211_channel *chan;
2759 struct ieee80211_scan_state *ss;
2760 struct iwi_scan_ext scan;
2761 int error = 0;
2762
2763 IWI_LOCK_ASSERT(sc);
2764 if (sc->fw_state == IWI_FW_SCANNING) {
2765 /*
2766 * This should not happen as we only trigger scan_next after
2767 * completion
2768 */
2769 DPRINTF(("%s: called too early - still scanning\n", __func__));
2770 return (EBUSY);
2771 }
2772 IWI_STATE_BEGIN(sc, IWI_FW_SCANNING);
2773
2774 ss = ic->ic_scan;
2775
2776 memset(&scan, 0, sizeof scan);
2777 scan.full_scan_index = htole32(++sc->sc_scangen);
2778 scan.dwell_time[IWI_SCAN_TYPE_PASSIVE] = htole16(maxdwell);
2779 if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) {
2780 /*
2781 * Use very short dwell times for when we send probe request
2782 * frames. Without this bg scans hang. Ideally this should
2783 * be handled with early-termination as done by net80211 but
2784 * that's not feasible (aborting a scan is problematic).
2785 */
2786 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(30);
2787 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(30);
2788 } else {
2789 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(maxdwell);
2790 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(maxdwell);
2791 }
2792
2793 /* We can only set one essid for a directed scan */
2794 if (ss->ss_nssid != 0) {
2795 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ss->ss_ssid[0].ssid,
2796 ss->ss_ssid[0].len);
2797 if (error)
2798 return (error);
2799 }
2800
2801 if (allchan) {
2802 int i, next, band, b, bstart;
2803 /*
2804 * Convert scan list to run-length encoded channel list
2805 * the firmware requires (preserving the order setup by
2806 * net80211). The first entry in each run specifies the
2807 * band and the count of items in the run.
2808 */
2809 next = 0; /* next open slot */
2810 bstart = 0; /* NB: not needed, silence compiler */
2811 band = -1; /* NB: impossible value */
2812 KASSERT(ss->ss_last > 0, ("no channels"));
2813 for (i = 0; i < ss->ss_last; i++) {
2814 chan = ss->ss_chans[i];
2815 b = scan_band(chan);
2816 if (b != band) {
2817 if (band != -1)
2818 scan.channels[bstart] =
2819 (next - bstart) | band;
2820 /* NB: this allocates a slot for the run-len */
2821 band = b, bstart = next++;
2822 }
2823 if (next >= IWI_SCAN_CHANNELS) {
2824 DPRINTF(("truncating scan list\n"));
2825 break;
2826 }
2827 scan.channels[next] = ieee80211_chan2ieee(ic, chan);
2828 set_scan_type(&scan, next, scan_type(ss, chan));
2829 next++;
2830 }
2831 scan.channels[bstart] = (next - bstart) | band;
2832 } else {
2833 /* Scan the current channel only */
2834 chan = ic->ic_curchan;
2835 scan.channels[0] = 1 | scan_band(chan);
2836 scan.channels[1] = ieee80211_chan2ieee(ic, chan);
2837 set_scan_type(&scan, 1, scan_type(ss, chan));
2838 }
2839 #ifdef IWI_DEBUG
2840 if (iwi_debug > 0) {
2841 static const char *scantype[8] =
2842 { "PSTOP", "PASV", "DIR", "BCAST", "BDIR", "5", "6", "7" };
2843 int i;
2844 kprintf("Scan request: index %u dwell %d/%d/%d\n"
2845 , le32toh(scan.full_scan_index)
2846 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_PASSIVE])
2847 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BROADCAST])
2848 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED])
2849 );
2850 i = 0;
2851 do {
2852 int run = scan.channels[i];
2853 if (run == 0)
2854 break;
2855 kprintf("Scan %d %s channels:", run & 0x3f,
2856 run & IWI_CHAN_2GHZ ? "2.4GHz" : "5GHz");
2857 for (run &= 0x3f, i++; run > 0; run--, i++) {
2858 uint8_t type = scan.scan_type[i/2];
2859 kprintf(" %u/%s", scan.channels[i],
2860 scantype[(i & 1 ? type : type>>4) & 7]);
2861 }
2862 kprintf("\n");
2863 } while (i < IWI_SCAN_CHANNELS);
2864 }
2865 #endif
2866
2867 return (iwi_cmd(sc, IWI_CMD_SCAN_EXT, &scan, sizeof scan));
2868 }
2869
2870 static int
2871 iwi_set_sensitivity(struct iwi_softc *sc, int8_t rssi_dbm)
2872 {
2873 struct iwi_sensitivity sens;
2874
2875 DPRINTF(("Setting sensitivity to %d\n", rssi_dbm));
2876
2877 memset(&sens, 0, sizeof sens);
2878 sens.rssi = htole16(rssi_dbm);
2879 return iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &sens, sizeof sens);
2880 }
2881
2882 static int
2883 iwi_auth_and_assoc(struct iwi_softc *sc, struct ieee80211vap *vap)
2884 {
2885 struct ieee80211com *ic = vap->iv_ic;
2886 struct ifnet *ifp = vap->iv_ifp;
2887 struct ieee80211_node *ni;
2888 struct iwi_configuration config;
2889 struct iwi_associate *assoc = &sc->assoc;
2890 struct iwi_rateset rs;
2891 uint16_t capinfo;
2892 uint32_t data;
2893 int error, mode;
2894
2895 IWI_LOCK_ASSERT(sc);
2896
2897 ni = ieee80211_ref_node(vap->iv_bss);
2898
2899 if (sc->flags & IWI_FLAG_ASSOCIATED) {
2900 DPRINTF(("Already associated\n"));
2901 return (-1);
2902 }
2903
2904 IWI_STATE_BEGIN(sc, IWI_FW_ASSOCIATING);
2905 error = 0;
2906 mode = 0;
2907
2908 if (IEEE80211_IS_CHAN_A(ic->ic_curchan))
2909 mode = IWI_MODE_11A;
2910 else if (IEEE80211_IS_CHAN_G(ic->ic_curchan))
2911 mode = IWI_MODE_11G;
2912 if (IEEE80211_IS_CHAN_B(ic->ic_curchan))
2913 mode = IWI_MODE_11B;
2914
2915 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2916 memset(&config, 0, sizeof config);
2917 config.bluetooth_coexistence = sc->bluetooth;
2918 config.antenna = sc->antenna;
2919 config.multicast_enabled = 1;
2920 if (mode == IWI_MODE_11G)
2921 config.use_protection = 1;
2922 config.answer_pbreq =
2923 (vap->iv_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2924 config.disable_unicast_decryption = 1;
2925 config.disable_multicast_decryption = 1;
2926 DPRINTF(("Configuring adapter\n"));
2927 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2928 if (error != 0)
2929 goto done;
2930 }
2931
2932 #ifdef IWI_DEBUG
2933 if (iwi_debug > 0) {
2934 kprintf("Setting ESSID to ");
2935 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
2936 kprintf("\n");
2937 }
2938 #endif
2939 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen);
2940 if (error != 0)
2941 goto done;
2942
2943 error = iwi_setpowermode(sc, vap);
2944 if (error != 0)
2945 goto done;
2946
2947 data = htole32(vap->iv_rtsthreshold);
2948 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2949 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2950 if (error != 0)
2951 goto done;
2952
2953 data = htole32(vap->iv_fragthreshold);
2954 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data)));
2955 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2956 if (error != 0)
2957 goto done;
2958
2959 /* the rate set has already been "negotiated" */
2960 memset(&rs, 0, sizeof rs);
2961 rs.mode = mode;
2962 rs.type = IWI_RATESET_TYPE_NEGOTIATED;
2963 rs.nrates = ni->ni_rates.rs_nrates;
2964 if (rs.nrates > IWI_RATESET_SIZE) {
2965 DPRINTF(("Truncating negotiated rate set from %u\n",
2966 rs.nrates));
2967 rs.nrates = IWI_RATESET_SIZE;
2968 }
2969 memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates);
2970 DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates));
2971 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2972 if (error != 0)
2973 goto done;
2974
2975 memset(assoc, 0, sizeof *assoc);
2976
2977 if ((vap->iv_flags & IEEE80211_F_WME) && ni->ni_ies.wme_ie != NULL) {
2978 /* NB: don't treat WME setup as failure */
2979 if (iwi_wme_setparams(sc) == 0 && iwi_wme_setie(sc) == 0)
2980 assoc->policy |= htole16(IWI_POLICY_WME);
2981 /* XXX complain on failure? */
2982 }
2983
2984 if (vap->iv_appie_wpa != NULL) {
2985 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2986
2987 DPRINTF(("Setting optional IE (len=%u)\n", ie->ie_len));
2988 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ie->ie_data, ie->ie_len);
2989 if (error != 0)
2990 goto done;
2991 }
2992
2993 error = iwi_set_sensitivity(sc, ic->ic_node_getrssi(ni));
2994 if (error != 0)
2995 goto done;
2996
2997 assoc->mode = mode;
2998 assoc->chan = ic->ic_curchan->ic_ieee;
2999 /*
3000 * NB: do not arrange for shared key auth w/o privacy
3001 * (i.e. a wep key); it causes a firmware error.
3002 */
3003 if ((vap->iv_flags & IEEE80211_F_PRIVACY) &&
3004 ni->ni_authmode == IEEE80211_AUTH_SHARED) {
3005 assoc->auth = IWI_AUTH_SHARED;
3006 /*
3007 * It's possible to have privacy marked but no default
3008 * key setup. This typically is due to a user app bug
3009 * but if we blindly grab the key the firmware will
3010 * barf so avoid it for now.
3011 */
3012 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE)
3013 assoc->auth |= vap->iv_def_txkey << 4;
3014
3015 error = iwi_setwepkeys(sc, vap);
3016 if (error != 0)
3017 goto done;
3018 }
3019 if (vap->iv_flags & IEEE80211_F_WPA)
3020 assoc->policy |= htole16(IWI_POLICY_WPA);
3021 if (vap->iv_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0)
3022 assoc->type = IWI_HC_IBSS_START;
3023 else
3024 assoc->type = IWI_HC_ASSOC;
3025 memcpy(assoc->tstamp, ni->ni_tstamp.data, 8);
3026
3027 if (vap->iv_opmode == IEEE80211_M_IBSS)
3028 capinfo = IEEE80211_CAPINFO_IBSS;
3029 else
3030 capinfo = IEEE80211_CAPINFO_ESS;
3031 if (vap->iv_flags & IEEE80211_F_PRIVACY)
3032 capinfo |= IEEE80211_CAPINFO_PRIVACY;
3033 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
3034 IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
3035 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
3036 if (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)
3037 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
3038 assoc->capinfo = htole16(capinfo);
3039
3040 assoc->lintval = htole16(ic->ic_lintval);
3041 assoc->intval = htole16(ni->ni_intval);
3042 IEEE80211_ADDR_COPY(assoc->bssid, ni->ni_bssid);
3043 if (vap->iv_opmode == IEEE80211_M_IBSS)
3044 IEEE80211_ADDR_COPY(assoc->dst, ifp->if_broadcastaddr);
3045 else
3046 IEEE80211_ADDR_COPY(assoc->dst, ni->ni_bssid);
3047
3048 #if defined(__DragonFly__)
3049 DPRINTF(("%s bssid %s dst %s channel %u policy 0x%x "
3050 "auth %u capinfo 0x%x lintval %u bintval %u\n",
3051 assoc->type == IWI_HC_IBSS_START ? "Start" : "Join",
3052 ether_sprintf(assoc->bssid), ether_sprintf(assoc->dst),
3053 assoc->chan, le16toh(assoc->policy), assoc->auth,
3054 le16toh(assoc->capinfo), le16toh(assoc->lintval),
3055 le16toh(assoc->intval)));
3056 #else
3057 DPRINTF(("%s bssid %6D dst %6D channel %u policy 0x%x "
3058 "auth %u capinfo 0x%x lintval %u bintval %u\n",
3059 assoc->type == IWI_HC_IBSS_START ? "Start" : "Join",
3060 assoc->bssid, ":", assoc->dst, ":",
3061 assoc->chan, le16toh(assoc->policy), assoc->auth,
3062 le16toh(assoc->capinfo), le16toh(assoc->lintval),
3063 le16toh(assoc->intval)));
3064 #endif
3065 error = iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
3066 done:
3067 ieee80211_free_node(ni);
3068 if (error)
3069 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
3070
3071 return (error);
3072 }
3073
3074 static void
3075 iwi_disassoc(void *arg, int pending)
3076 {
3077 struct iwi_softc *sc = arg;
3078 IWI_LOCK_DECL;
3079
3080 IWI_LOCK(sc);
3081 iwi_disassociate(sc, 0);
3082 IWI_UNLOCK(sc);
3083 }
3084
3085 static int
3086 iwi_disassociate(struct iwi_softc *sc, int quiet)
3087 {
3088 struct iwi_associate *assoc = &sc->assoc;
3089
3090 if ((sc->flags & IWI_FLAG_ASSOCIATED) == 0) {
3091 DPRINTF(("Not associated\n"));
3092 return (-1);
3093 }
3094
3095 IWI_STATE_BEGIN(sc, IWI_FW_DISASSOCIATING);
3096
3097 if (quiet)
3098 assoc->type = IWI_HC_DISASSOC_QUIET;
3099 else
3100 assoc->type = IWI_HC_DISASSOC;
3101
3102 #if defined(__DragonFly__)
3103 DPRINTF(("Trying to disassociate from %s channel %u\n",
3104 ether_sprintf(assoc->bssid), assoc->chan));
3105 #else
3106 DPRINTF(("Trying to disassociate from %6D channel %u\n",
3107 assoc->bssid, ":", assoc->chan));
3108 #endif
3109 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
3110 }
3111
3112 /*
3113 * release dma resources for the firmware
3114 */
3115 static void
3116 iwi_release_fw_dma(struct iwi_softc *sc)
3117 {
3118 if (sc->fw_flags & IWI_FW_HAVE_PHY)
3119 bus_dmamap_unload(sc->fw_dmat, sc->fw_map);
3120 if (sc->fw_flags & IWI_FW_HAVE_MAP)
3121 bus_dmamem_free(sc->fw_dmat, sc->fw_virtaddr, sc->fw_map);
3122 if (sc->fw_flags & IWI_FW_HAVE_DMAT)
3123 bus_dma_tag_destroy(sc->fw_dmat);
3124
3125 sc->fw_flags = 0;
3126 sc->fw_dma_size = 0;
3127 sc->fw_dmat = NULL;
3128 sc->fw_map = NULL;
3129 sc->fw_physaddr = 0;
3130 sc->fw_virtaddr = NULL;
3131 }
3132
3133 /*
3134 * allocate the dma descriptor for the firmware.
3135 * Return 0 on success, 1 on error.
3136 * Must be called unlocked, protected by IWI_FLAG_FW_LOADING.
3137 */
3138 static int
3139 iwi_init_fw_dma(struct iwi_softc *sc, int size)
3140 {
3141 if (sc->fw_dma_size >= size)
3142 return 0;
3143 #if defined(__DragonFly__)
3144 if (bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
3145 BUS_SPACE_MAXADDR, NULL, NULL, size, 1, size,
3146 0, &sc->fw_dmat) != 0) {
3147 #else
3148 if (bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
3149 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
3150 size, 1, size, 0, NULL, NULL, &sc->fw_dmat) != 0) {
3151 #endif
3152 device_printf(sc->sc_dev,
3153 "could not create firmware DMA tag\n");
3154 goto error;
3155 }
3156 sc->fw_flags |= IWI_FW_HAVE_DMAT;
3157 if (bus_dmamem_alloc(sc->fw_dmat, &sc->fw_virtaddr, 0,
3158 &sc->fw_map) != 0) {
3159 device_printf(sc->sc_dev,
3160 "could not allocate firmware DMA memory\n");
3161 goto error;
3162 }
3163 sc->fw_flags |= IWI_FW_HAVE_MAP;
3164 if (bus_dmamap_load(sc->fw_dmat, sc->fw_map, sc->fw_virtaddr,
3165 size, iwi_dma_map_addr, &sc->fw_physaddr, 0) != 0) {
3166 device_printf(sc->sc_dev, "could not load firmware DMA map\n");
3167 goto error;
3168 }
3169 sc->fw_flags |= IWI_FW_HAVE_PHY;
3170 sc->fw_dma_size = size;
3171 return 0;
3172
3173 error:
3174 iwi_release_fw_dma(sc);
3175 return 1;
3176 }
3177
3178 static void
3179 iwi_init_locked(struct iwi_softc *sc)
3180 {
3181 struct iwi_rx_data *data;
3182 int i;
3183
3184 IWI_LOCK_ASSERT(sc);
3185
3186 if (sc->fw_state == IWI_FW_LOADING) {
3187 device_printf(sc->sc_dev, "%s: already loading\n", __func__);
3188 return; /* XXX: condvar? */
3189 }
3190
3191 iwi_stop_locked(sc);
3192
3193 IWI_STATE_BEGIN(sc, IWI_FW_LOADING);
3194
3195 if (iwi_reset(sc) != 0) {
3196 device_printf(sc->sc_dev, "could not reset adapter\n");
3197 goto fail;
3198 }
3199 if (iwi_load_firmware(sc, &sc->fw_boot) != 0) {
3200 device_printf(sc->sc_dev,
3201 "could not load boot firmware %s\n", sc->fw_boot.name);
3202 goto fail;
3203 }
3204 if (iwi_load_ucode(sc, &sc->fw_uc) != 0) {
3205 device_printf(sc->sc_dev,
3206 "could not load microcode %s\n", sc->fw_uc.name);
3207 goto fail;
3208 }
3209
3210 iwi_stop_master(sc);
3211
3212 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.physaddr);
3213 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count);
3214 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
3215
3216 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].physaddr);
3217 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count);
3218 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur);
3219
3220 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].physaddr);
3221 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count);
3222 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur);
3223
3224 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].physaddr);
3225 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count);
3226 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur);
3227
3228 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].physaddr);
3229 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count);
3230 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur);
3231
3232 for (i = 0; i < sc->rxq.count; i++) {
3233 data = &sc->rxq.data[i];
3234 CSR_WRITE_4(sc, data->reg, data->physaddr);
3235 }
3236
3237 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count - 1);
3238
3239 if (iwi_load_firmware(sc, &sc->fw_fw) != 0) {
3240 device_printf(sc->sc_dev,
3241 "could not load main firmware %s\n", sc->fw_fw.name);
3242 goto fail;
3243 }
3244 sc->flags |= IWI_FLAG_FW_INITED;
3245
3246 IWI_STATE_END(sc, IWI_FW_LOADING);
3247
3248 if (iwi_config(sc) != 0) {
3249 device_printf(sc->sc_dev, "unable to enable adapter\n");
3250 goto fail2;
3251 }
3252
3253 callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
3254 sc->sc_running = 1;
3255 return;
3256 fail:
3257 IWI_STATE_END(sc, IWI_FW_LOADING);
3258 fail2:
3259 iwi_stop_locked(sc);
3260 }
3261
3262 static void
3263 iwi_init(void *priv)
3264 {
3265 struct iwi_softc *sc = priv;
3266 struct ieee80211com *ic = &sc->sc_ic;
3267 IWI_LOCK_DECL;
3268
3269 IWI_LOCK(sc);
3270 iwi_init_locked(sc);
3271 IWI_UNLOCK(sc);
3272
3273 if (sc->sc_running)
3274 ieee80211_start_all(ic);
3275 }
3276
3277 static void
3278 iwi_stop_locked(void *priv)
3279 {
3280 struct iwi_softc *sc = priv;
3281
3282 IWI_LOCK_ASSERT(sc);
3283
3284 sc->sc_running = 0;
3285
3286 if (sc->sc_softled) {
3287 callout_stop(&sc->sc_ledtimer);
3288 sc->sc_blinking = 0;
3289 }
3290 callout_stop(&sc->sc_wdtimer);
3291 callout_stop(&sc->sc_rftimer);
3292
3293 iwi_stop_master(sc);
3294
3295 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SOFT_RESET);
3296
3297 /* reset rings */
3298 iwi_reset_cmd_ring(sc, &sc->cmdq);
3299 iwi_reset_tx_ring(sc, &sc->txq[0]);
3300 iwi_reset_tx_ring(sc, &sc->txq[1]);
3301 iwi_reset_tx_ring(sc, &sc->txq[2]);
3302 iwi_reset_tx_ring(sc, &sc->txq[3]);
3303 iwi_reset_rx_ring(sc, &sc->rxq);
3304
3305 sc->sc_tx_timer = 0;
3306 sc->sc_state_timer = 0;
3307 sc->sc_busy_timer = 0;
3308 sc->flags &= ~(IWI_FLAG_BUSY | IWI_FLAG_ASSOCIATED);
3309 sc->fw_state = IWI_FW_IDLE;
3310 wakeup(sc);
3311 }
3312
3313 static void
3314 iwi_stop(struct iwi_softc *sc)
3315 {
3316 IWI_LOCK_DECL;
3317
3318 IWI_LOCK(sc);
3319 iwi_stop_locked(sc);
3320 IWI_UNLOCK(sc);
3321 }
3322
3323 static void
3324 iwi_restart(void *arg, int npending)
3325 {
3326 struct iwi_softc *sc = arg;
3327
3328 iwi_init(sc);
3329 }
3330
3331 /*
3332 * Return whether or not the radio is enabled in hardware
3333 * (i.e. the rfkill switch is "off").
3334 */
3335 static int
3336 iwi_getrfkill(struct iwi_softc *sc)
3337 {
3338 return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0;
3339 }
3340
3341 static void
3342 iwi_radio_on(void *arg, int pending)
3343 {
3344 struct iwi_softc *sc = arg;
3345 struct ieee80211com *ic = &sc->sc_ic;
3346
3347 device_printf(sc->sc_dev, "radio turned on\n");
3348
3349 iwi_init(sc);
3350 ieee80211_notify_radio(ic, 1);
3351 }
3352
3353 static void
3354 iwi_rfkill_poll(void *arg)
3355 {
3356 struct iwi_softc *sc = arg;
3357
3358 IWI_LOCK_ASSERT(sc);
3359
3360 /*
3361 * Check for a change in rfkill state. We get an
3362 * interrupt when a radio is disabled but not when
3363 * it is enabled so we must poll for the latter.
3364 */
3365 if (!iwi_getrfkill(sc)) {
3366 ieee80211_runtask(&sc->sc_ic, &sc->sc_radiontask);
3367 return;
3368 }
3369 callout_reset(&sc->sc_rftimer, 2*hz, iwi_rfkill_poll, sc);
3370 }
3371
3372 static void
3373 iwi_radio_off(void *arg, int pending)
3374 {
3375 struct iwi_softc *sc = arg;
3376 struct ieee80211com *ic = &sc->sc_ic;
3377 IWI_LOCK_DECL;
3378
3379 device_printf(sc->sc_dev, "radio turned off\n");
3380
3381 ieee80211_notify_radio(ic, 0);
3382
3383 IWI_LOCK(sc);
3384 iwi_stop_locked(sc);
3385 iwi_rfkill_poll(sc);
3386 IWI_UNLOCK(sc);
3387 }
3388
3389 static int
3390 iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)
3391 {
3392 struct iwi_softc *sc = arg1;
3393 uint32_t size, buf[128];
3394
3395 memset(buf, 0, sizeof buf);
3396
3397 if (!(sc->flags & IWI_FLAG_FW_INITED))
3398 return SYSCTL_OUT(req, buf, sizeof buf);
3399
3400 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1);
3401 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size);
3402
3403 return SYSCTL_OUT(req, buf, size);
3404 }
3405
3406 static int
3407 iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)
3408 {
3409 struct iwi_softc *sc = arg1;
3410 int val = !iwi_getrfkill(sc);
3411
3412 return SYSCTL_OUT(req, &val, sizeof val);
3413 }
3414
3415 /*
3416 * Add sysctl knobs.
3417 */
3418 static void
3419 iwi_sysctlattach(struct iwi_softc *sc)
3420 {
3421 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3422 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3423
3424 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "radio",
3425 CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I",
3426 "radio transmitter switch state (0=off, 1=on)");
3427
3428 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "stats",
3429 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats, "S",
3430 "statistics");
3431
3432 sc->bluetooth = 0;
3433 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "bluetooth",
3434 CTLFLAG_RW, &sc->bluetooth, 0, "bluetooth coexistence");
3435
3436 sc->antenna = IWI_ANTENNA_AUTO;
3437 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "antenna",
3438 CTLFLAG_RW, &sc->antenna, 0, "antenna (0=auto)");
3439 }
3440
3441 /*
3442 * LED support.
3443 *
3444 * Different cards have different capabilities. Some have three
3445 * led's while others have only one. The linux ipw driver defines
3446 * led's for link state (associated or not), band (11a, 11g, 11b),
3447 * and for link activity. We use one led and vary the blink rate
3448 * according to the tx/rx traffic a la the ath driver.
3449 */
3450
3451 static __inline uint32_t
3452 iwi_toggle_event(uint32_t r)
3453 {
3454 return r &~ (IWI_RST_STANDBY | IWI_RST_GATE_ODMA |
3455 IWI_RST_GATE_IDMA | IWI_RST_GATE_ADMA);
3456 }
3457
3458 static uint32_t
3459 iwi_read_event(struct iwi_softc *sc)
3460 {
3461 return MEM_READ_4(sc, IWI_MEM_EEPROM_EVENT);
3462 }
3463
3464 static void
3465 iwi_write_event(struct iwi_softc *sc, uint32_t v)
3466 {
3467 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, v);
3468 }
3469
3470 static void
3471 iwi_led_done(void *arg)
3472 {
3473 struct iwi_softc *sc = arg;
3474
3475 sc->sc_blinking = 0;
3476 }
3477
3478 /*
3479 * Turn the activity LED off: flip the pin and then set a timer so no
3480 * update will happen for the specified duration.
3481 */
3482 static void
3483 iwi_led_off(void *arg)
3484 {
3485 struct iwi_softc *sc = arg;
3486 uint32_t v;
3487
3488 v = iwi_read_event(sc);
3489 v &= ~sc->sc_ledpin;
3490 iwi_write_event(sc, iwi_toggle_event(v));
3491 callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, iwi_led_done, sc);
3492 }
3493
3494 /*
3495 * Blink the LED according to the specified on/off times.
3496 */
3497 static void
3498 iwi_led_blink(struct iwi_softc *sc, int on, int off)
3499 {
3500 uint32_t v;
3501
3502 v = iwi_read_event(sc);
3503 v |= sc->sc_ledpin;
3504 iwi_write_event(sc, iwi_toggle_event(v));
3505 sc->sc_blinking = 1;
3506 sc->sc_ledoff = off;
3507 callout_reset(&sc->sc_ledtimer, on, iwi_led_off, sc);
3508 }
3509
3510 static void
3511 iwi_led_event(struct iwi_softc *sc, int event)
3512 {
3513 /* NB: on/off times from the Atheros NDIS driver, w/ permission */
3514 static const struct {
3515 u_int rate; /* tx/rx iwi rate */
3516 u_int16_t timeOn; /* LED on time (ms) */
3517 u_int16_t timeOff; /* LED off time (ms) */
3518 } blinkrates[] = {
3519 { IWI_RATE_OFDM54, 40, 10 },
3520 { IWI_RATE_OFDM48, 44, 11 },
3521 { IWI_RATE_OFDM36, 50, 13 },
3522 { IWI_RATE_OFDM24, 57, 14 },
3523 { IWI_RATE_OFDM18, 67, 16 },
3524 { IWI_RATE_OFDM12, 80, 20 },
3525 { IWI_RATE_DS11, 100, 25 },
3526 { IWI_RATE_OFDM9, 133, 34 },
3527 { IWI_RATE_OFDM6, 160, 40 },
3528 { IWI_RATE_DS5, 200, 50 },
3529 { 6, 240, 58 }, /* XXX 3Mb/s if it existed */
3530 { IWI_RATE_DS2, 267, 66 },
3531 { IWI_RATE_DS1, 400, 100 },
3532 { 0, 500, 130 }, /* unknown rate/polling */
3533 };
3534 uint32_t txrate;
3535 int j = 0; /* XXX silence compiler */
3536
3537 sc->sc_ledevent = ticks; /* time of last event */
3538 if (sc->sc_blinking) /* don't interrupt active blink */
3539 return;
3540 switch (event) {
3541 case IWI_LED_POLL:
3542 j = nitems(blinkrates)-1;
3543 break;
3544 case IWI_LED_TX:
3545 /* read current transmission rate from adapter */
3546 txrate = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE);
3547 if (blinkrates[sc->sc_txrix].rate != txrate) {
3548 for (j = 0; j < nitems(blinkrates)-1; j++)
3549 if (blinkrates[j].rate == txrate)
3550 break;
3551 sc->sc_txrix = j;
3552 } else
3553 j = sc->sc_txrix;
3554 break;
3555 case IWI_LED_RX:
3556 if (blinkrates[sc->sc_rxrix].rate != sc->sc_rxrate) {
3557 for (j = 0; j < nitems(blinkrates)-1; j++)
3558 if (blinkrates[j].rate == sc->sc_rxrate)
3559 break;
3560 sc->sc_rxrix = j;
3561 } else
3562 j = sc->sc_rxrix;
3563 break;
3564 }
3565 /* XXX beware of overflow */
3566 iwi_led_blink(sc, (blinkrates[j].timeOn * hz) / 1000,
3567 (blinkrates[j].timeOff * hz) / 1000);
3568 }
3569
3570 static int
3571 iwi_sysctl_softled(SYSCTL_HANDLER_ARGS)
3572 {
3573 struct iwi_softc *sc = arg1;
3574 int softled = sc->sc_softled;
3575 int error;
3576
3577 error = sysctl_handle_int(oidp, &softled, 0, req);
3578 if (error || !req->newptr)
3579 return error;
3580 softled = (softled != 0);
3581 if (softled != sc->sc_softled) {
3582 if (softled) {
3583 uint32_t v = iwi_read_event(sc);
3584 v &= ~sc->sc_ledpin;
3585 iwi_write_event(sc, iwi_toggle_event(v));
3586 }
3587 sc->sc_softled = softled;
3588 }
3589 return 0;
3590 }
3591
3592 static void
3593 iwi_ledattach(struct iwi_softc *sc)
3594 {
3595 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3596 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3597
3598 sc->sc_blinking = 0;
3599 sc->sc_ledstate = 1;
3600 sc->sc_ledidle = (2700*hz)/1000; /* 2.7sec */
3601 #if defined(__DragonFly__)
3602 callout_init_lk(&sc->sc_ledtimer, &sc->sc_lock);
3603 #else
3604 callout_init_mtx(&sc->sc_ledtimer, &sc->sc_mtx, 0);
3605 #endif
3606
3607 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3608 "softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
3609 iwi_sysctl_softled, "I", "enable/disable software LED support");
3610 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3611 "ledpin", CTLFLAG_RW, &sc->sc_ledpin, 0,
3612 "pin setting to turn activity LED on");
3613 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3614 "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0,
3615 "idle time for inactivity LED (ticks)");
3616 /* XXX for debugging */
3617 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3618 "nictype", CTLFLAG_RD, &sc->sc_nictype, 0,
3619 "NIC type from EEPROM");
3620
3621 sc->sc_ledpin = IWI_RST_LED_ACTIVITY;
3622 sc->sc_softled = 1;
3623
3624 sc->sc_nictype = (iwi_read_prom_word(sc, IWI_EEPROM_NIC) >> 8) & 0xff;
3625 if (sc->sc_nictype == 1) {
3626 /*
3627 * NB: led's are reversed.
3628 */
3629 sc->sc_ledpin = IWI_RST_LED_ASSOCIATED;
3630 }
3631 }
3632
3633 static void
3634 iwi_scan_start(struct ieee80211com *ic)
3635 {
3636 /* ignore */
3637 }
3638
3639 static void
3640 iwi_set_channel(struct ieee80211com *ic)
3641 {
3642 struct iwi_softc *sc = ic->ic_softc;
3643
3644 if (sc->fw_state == IWI_FW_IDLE)
3645 iwi_setcurchan(sc, ic->ic_curchan->ic_ieee);
3646 }
3647
3648 static void
3649 iwi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
3650 {
3651 struct ieee80211vap *vap = ss->ss_vap;
3652 struct iwi_softc *sc = vap->iv_ic->ic_softc;
3653 IWI_LOCK_DECL;
3654
3655 IWI_LOCK(sc);
3656 if (iwi_scanchan(sc, maxdwell, 0))
3657 ieee80211_cancel_scan(vap);
3658 IWI_UNLOCK(sc);
3659 }
3660
3661 static void
3662 iwi_scan_mindwell(struct ieee80211_scan_state *ss)
3663 {
3664 /* NB: don't try to abort scan; wait for firmware to finish */
3665 }
3666
3667 static void
3668 iwi_scan_end(struct ieee80211com *ic)
3669 {
3670 struct iwi_softc *sc = ic->ic_softc;
3671 IWI_LOCK_DECL;
3672
3673 IWI_LOCK(sc);
3674 sc->flags &= ~IWI_FLAG_CHANNEL_SCAN;
3675 /* NB: make sure we're still scanning */
3676 if (sc->fw_state == IWI_FW_SCANNING)
3677 iwi_cmd(sc, IWI_CMD_ABORT_SCAN, NULL, 0);
3678 IWI_UNLOCK(sc);
3679 }
DragonFly BSD