1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2004, 2005
5 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
6 * Copyright (c) 2005-2006 Sam Leffler, Errno Consulting
7 * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice unmodified, this list of conditions, and the following
14 * disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 /*-
34 * Intel(R) PRO/Wireless 2200BG/2225BG/2915ABG driver
35 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
36 */
37
38 #include <sys/param.h>
39 #include <sys/sysctl.h>
40 #include <sys/sockio.h>
41 #include <sys/mbuf.h>
42 #include <sys/kernel.h>
43 #include <sys/socket.h>
44 #include <sys/systm.h>
45 #include <sys/malloc.h>
46 #include <sys/lock.h>
47 #include <sys/mutex.h>
48 #include <sys/module.h>
49 #include <sys/bus.h>
50 #include <sys/endian.h>
51 #include <sys/proc.h>
52 #include <sys/mount.h>
53 #include <sys/namei.h>
54 #include <sys/linker.h>
55 #include <sys/firmware.h>
56 #include <sys/taskqueue.h>
57
58 #include <machine/bus.h>
59 #include <machine/resource.h>
60 #include <sys/rman.h>
61
62 #include <dev/pci/pcireg.h>
63 #include <dev/pci/pcivar.h>
64
65 #include <net/bpf.h>
66 #include <net/if.h>
67 #include <net/if_var.h>
68 #include <net/if_arp.h>
69 #include <net/ethernet.h>
70 #include <net/if_dl.h>
71 #include <net/if_media.h>
72 #include <net/if_types.h>
73
74 #include <net80211/ieee80211_var.h>
75 #include <net80211/ieee80211_radiotap.h>
76 #include <net80211/ieee80211_input.h>
77 #include <net80211/ieee80211_regdomain.h>
78
79 #include <netinet/in.h>
80 #include <netinet/in_systm.h>
81 #include <netinet/in_var.h>
82 #include <netinet/ip.h>
83 #include <netinet/if_ether.h>
84
85 #include <dev/iwi/if_iwireg.h>
86 #include <dev/iwi/if_iwivar.h>
87 #include <dev/iwi/if_iwi_ioctl.h>
88
89 #define IWI_DEBUG
90 #ifdef IWI_DEBUG
91 #define DPRINTF(x) do { if (iwi_debug > 0) printf x; } while (0)
92 #define DPRINTFN(n, x) do { if (iwi_debug >= (n)) printf x; } while (0)
93 int iwi_debug = 0;
94 SYSCTL_INT(_debug, OID_AUTO, iwi, CTLFLAG_RW, &iwi_debug, 0, "iwi debug level");
95
96 static const char *iwi_fw_states[] = {
97 "IDLE", /* IWI_FW_IDLE */
98 "LOADING", /* IWI_FW_LOADING */
99 "ASSOCIATING", /* IWI_FW_ASSOCIATING */
100 "DISASSOCIATING", /* IWI_FW_DISASSOCIATING */
101 "SCANNING", /* IWI_FW_SCANNING */
102 };
103 #else
104 #define DPRINTF(x)
105 #define DPRINTFN(n, x)
106 #endif
107
108 MODULE_DEPEND(iwi, pci, 1, 1, 1);
109 MODULE_DEPEND(iwi, wlan, 1, 1, 1);
110 MODULE_DEPEND(iwi, firmware, 1, 1, 1);
111
112 enum {
113 IWI_LED_TX,
114 IWI_LED_RX,
115 IWI_LED_POLL,
116 };
117
118 struct iwi_ident {
119 uint16_t vendor;
120 uint16_t device;
121 const char *name;
122 };
123
124 static const struct iwi_ident iwi_ident_table[] = {
125 { 0x8086, 0x4220, "Intel(R) PRO/Wireless 2200BG" },
126 { 0x8086, 0x4221, "Intel(R) PRO/Wireless 2225BG" },
127 { 0x8086, 0x4223, "Intel(R) PRO/Wireless 2915ABG" },
128 { 0x8086, 0x4224, "Intel(R) PRO/Wireless 2915ABG" },
129
130 { 0, 0, NULL }
131 };
132
133 static const uint8_t def_chan_5ghz_band1[] =
134 { 36, 40, 44, 48, 52, 56, 60, 64 };
135 static const uint8_t def_chan_5ghz_band2[] =
136 { 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 };
137 static const uint8_t def_chan_5ghz_band3[] =
138 { 149, 153, 157, 161, 165 };
139
140 static struct ieee80211vap *iwi_vap_create(struct ieee80211com *,
141 const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
142 const uint8_t [IEEE80211_ADDR_LEN],
143 const uint8_t [IEEE80211_ADDR_LEN]);
144 static void iwi_vap_delete(struct ieee80211vap *);
145 static void iwi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
146 static int iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *,
147 int);
148 static void iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
149 static void iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
150 static int iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *,
151 int, bus_addr_t, bus_addr_t);
152 static void iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
153 static void iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
154 static int iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *,
155 int);
156 static void iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
157 static void iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
158 static struct ieee80211_node *iwi_node_alloc(struct ieee80211vap *,
159 const uint8_t [IEEE80211_ADDR_LEN]);
160 static void iwi_node_free(struct ieee80211_node *);
161 static void iwi_media_status(if_t, struct ifmediareq *);
162 static int iwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
163 static void iwi_wme_init(struct iwi_softc *);
164 static int iwi_wme_setparams(struct iwi_softc *);
165 static int iwi_wme_update(struct ieee80211com *);
166 static uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t);
167 static void iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int,
168 struct iwi_frame *);
169 static void iwi_notification_intr(struct iwi_softc *, struct iwi_notif *);
170 static void iwi_rx_intr(struct iwi_softc *);
171 static void iwi_tx_intr(struct iwi_softc *, struct iwi_tx_ring *);
172 static void iwi_intr(void *);
173 static int iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t);
174 static void iwi_write_ibssnode(struct iwi_softc *, const u_int8_t [IEEE80211_ADDR_LEN], int);
175 static int iwi_tx_start(struct iwi_softc *, struct mbuf *,
176 struct ieee80211_node *, int);
177 static int iwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
178 const struct ieee80211_bpf_params *);
179 static void iwi_start(struct iwi_softc *);
180 static int iwi_transmit(struct ieee80211com *, struct mbuf *);
181 static void iwi_watchdog(void *);
182 static int iwi_ioctl(struct ieee80211com *, u_long, void *);
183 static void iwi_parent(struct ieee80211com *);
184 static void iwi_stop_master(struct iwi_softc *);
185 static int iwi_reset(struct iwi_softc *);
186 static int iwi_load_ucode(struct iwi_softc *, const struct iwi_fw *);
187 static int iwi_load_firmware(struct iwi_softc *, const struct iwi_fw *);
188 static void iwi_release_fw_dma(struct iwi_softc *sc);
189 static int iwi_config(struct iwi_softc *);
190 static int iwi_get_firmware(struct iwi_softc *, enum ieee80211_opmode);
191 static void iwi_put_firmware(struct iwi_softc *);
192 static void iwi_monitor_scan(void *, int);
193 static int iwi_scanchan(struct iwi_softc *, unsigned long, int);
194 static void iwi_scan_start(struct ieee80211com *);
195 static void iwi_scan_end(struct ieee80211com *);
196 static void iwi_set_channel(struct ieee80211com *);
197 static void iwi_scan_curchan(struct ieee80211_scan_state *, unsigned long maxdwell);
198 static void iwi_scan_mindwell(struct ieee80211_scan_state *);
199 static int iwi_auth_and_assoc(struct iwi_softc *, struct ieee80211vap *);
200 static void iwi_disassoc(void *, int);
201 static int iwi_disassociate(struct iwi_softc *, int quiet);
202 static void iwi_init_locked(struct iwi_softc *);
203 static void iwi_init(void *);
204 static int iwi_init_fw_dma(struct iwi_softc *, int);
205 static void iwi_stop_locked(void *);
206 static void iwi_stop(struct iwi_softc *);
207 static void iwi_restart(void *, int);
208 static int iwi_getrfkill(struct iwi_softc *);
209 static void iwi_radio_on(void *, int);
210 static void iwi_radio_off(void *, int);
211 static void iwi_sysctlattach(struct iwi_softc *);
212 static void iwi_led_event(struct iwi_softc *, int);
213 static void iwi_ledattach(struct iwi_softc *);
214 static void iwi_collect_bands(struct ieee80211com *, uint8_t [], size_t);
215 static void iwi_getradiocaps(struct ieee80211com *, int, int *,
216 struct ieee80211_channel []);
217
218 static int iwi_probe(device_t);
219 static int iwi_attach(device_t);
220 static int iwi_detach(device_t);
221 static int iwi_shutdown(device_t);
222 static int iwi_suspend(device_t);
223 static int iwi_resume(device_t);
224
225 static device_method_t iwi_methods[] = {
226 /* Device interface */
227 DEVMETHOD(device_probe, iwi_probe),
228 DEVMETHOD(device_attach, iwi_attach),
229 DEVMETHOD(device_detach, iwi_detach),
230 DEVMETHOD(device_shutdown, iwi_shutdown),
231 DEVMETHOD(device_suspend, iwi_suspend),
232 DEVMETHOD(device_resume, iwi_resume),
233
234 DEVMETHOD_END
235 };
236
237 static driver_t iwi_driver = {
238 "iwi",
239 iwi_methods,
240 sizeof (struct iwi_softc)
241 };
242
243 DRIVER_MODULE(iwi, pci, iwi_driver, NULL, NULL);
244
245 MODULE_VERSION(iwi, 1);
246
247 static __inline uint8_t
MEM_READ_1(struct iwi_softc * sc,uint32_t addr)248 MEM_READ_1(struct iwi_softc *sc, uint32_t addr)
249 {
250 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
251 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA);
252 }
253
254 static __inline uint32_t
MEM_READ_4(struct iwi_softc * sc,uint32_t addr)255 MEM_READ_4(struct iwi_softc *sc, uint32_t addr)
256 {
257 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
258 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA);
259 }
260
261 static int
iwi_probe(device_t dev)262 iwi_probe(device_t dev)
263 {
264 const struct iwi_ident *ident;
265
266 for (ident = iwi_ident_table; ident->name != NULL; ident++) {
267 if (pci_get_vendor(dev) == ident->vendor &&
268 pci_get_device(dev) == ident->device) {
269 device_set_desc(dev, ident->name);
270 return (BUS_PROBE_DEFAULT);
271 }
272 }
273 return ENXIO;
274 }
275
276 static int
iwi_attach(device_t dev)277 iwi_attach(device_t dev)
278 {
279 struct iwi_softc *sc = device_get_softc(dev);
280 struct ieee80211com *ic = &sc->sc_ic;
281 uint16_t val;
282 int i, error;
283
284 sc->sc_dev = dev;
285 sc->sc_ledevent = ticks;
286
287 IWI_LOCK_INIT(sc);
288 mbufq_init(&sc->sc_snd, ifqmaxlen);
289
290 sc->sc_unr = new_unrhdr(1, IWI_MAX_IBSSNODE-1, &sc->sc_mtx);
291
292 TASK_INIT(&sc->sc_radiontask, 0, iwi_radio_on, sc);
293 TASK_INIT(&sc->sc_radiofftask, 0, iwi_radio_off, sc);
294 TASK_INIT(&sc->sc_restarttask, 0, iwi_restart, sc);
295 TASK_INIT(&sc->sc_disassoctask, 0, iwi_disassoc, sc);
296 TASK_INIT(&sc->sc_monitortask, 0, iwi_monitor_scan, sc);
297
298 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
299 callout_init_mtx(&sc->sc_rftimer, &sc->sc_mtx, 0);
300
301 pci_write_config(dev, 0x41, 0, 1);
302
303 /* enable bus-mastering */
304 pci_enable_busmaster(dev);
305
306 i = PCIR_BAR(0);
307 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
308 if (sc->mem == NULL) {
309 device_printf(dev, "could not allocate memory resource\n");
310 goto fail;
311 }
312
313 sc->sc_st = rman_get_bustag(sc->mem);
314 sc->sc_sh = rman_get_bushandle(sc->mem);
315
316 i = 0;
317 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
318 RF_ACTIVE | RF_SHAREABLE);
319 if (sc->irq == NULL) {
320 device_printf(dev, "could not allocate interrupt resource\n");
321 goto fail;
322 }
323
324 if (iwi_reset(sc) != 0) {
325 device_printf(dev, "could not reset adapter\n");
326 goto fail;
327 }
328
329 /*
330 * Allocate rings.
331 */
332 if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) {
333 device_printf(dev, "could not allocate Cmd ring\n");
334 goto fail;
335 }
336
337 for (i = 0; i < 4; i++) {
338 error = iwi_alloc_tx_ring(sc, &sc->txq[i], IWI_TX_RING_COUNT,
339 IWI_CSR_TX1_RIDX + i * 4,
340 IWI_CSR_TX1_WIDX + i * 4);
341 if (error != 0) {
342 device_printf(dev, "could not allocate Tx ring %d\n",
343 i+i);
344 goto fail;
345 }
346 }
347
348 if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) {
349 device_printf(dev, "could not allocate Rx ring\n");
350 goto fail;
351 }
352
353 iwi_wme_init(sc);
354
355 ic->ic_softc = sc;
356 ic->ic_name = device_get_nameunit(dev);
357 ic->ic_opmode = IEEE80211_M_STA;
358 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
359
360 /* set device capabilities */
361 ic->ic_caps =
362 IEEE80211_C_STA /* station mode supported */
363 | IEEE80211_C_IBSS /* IBSS mode supported */
364 | IEEE80211_C_MONITOR /* monitor mode supported */
365 | IEEE80211_C_PMGT /* power save supported */
366 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
367 | IEEE80211_C_WPA /* 802.11i */
368 | IEEE80211_C_WME /* 802.11e */
369 #if 0
370 | IEEE80211_C_BGSCAN /* capable of bg scanning */
371 #endif
372 ;
373
374 /* read MAC address from EEPROM */
375 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0);
376 ic->ic_macaddr[0] = val & 0xff;
377 ic->ic_macaddr[1] = val >> 8;
378 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1);
379 ic->ic_macaddr[2] = val & 0xff;
380 ic->ic_macaddr[3] = val >> 8;
381 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2);
382 ic->ic_macaddr[4] = val & 0xff;
383 ic->ic_macaddr[5] = val >> 8;
384
385 iwi_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
386 ic->ic_channels);
387
388 ieee80211_ifattach(ic);
389 /* override default methods */
390 ic->ic_node_alloc = iwi_node_alloc;
391 sc->sc_node_free = ic->ic_node_free;
392 ic->ic_node_free = iwi_node_free;
393 ic->ic_raw_xmit = iwi_raw_xmit;
394 ic->ic_scan_start = iwi_scan_start;
395 ic->ic_scan_end = iwi_scan_end;
396 ic->ic_set_channel = iwi_set_channel;
397 ic->ic_scan_curchan = iwi_scan_curchan;
398 ic->ic_scan_mindwell = iwi_scan_mindwell;
399 ic->ic_wme.wme_update = iwi_wme_update;
400
401 ic->ic_vap_create = iwi_vap_create;
402 ic->ic_vap_delete = iwi_vap_delete;
403 ic->ic_ioctl = iwi_ioctl;
404 ic->ic_transmit = iwi_transmit;
405 ic->ic_parent = iwi_parent;
406 ic->ic_getradiocaps = iwi_getradiocaps;
407
408 ieee80211_radiotap_attach(ic,
409 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
410 IWI_TX_RADIOTAP_PRESENT,
411 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
412 IWI_RX_RADIOTAP_PRESENT);
413
414 iwi_sysctlattach(sc);
415 iwi_ledattach(sc);
416
417 /*
418 * Hook our interrupt after all initialization is complete.
419 */
420 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
421 NULL, iwi_intr, sc, &sc->sc_ih);
422 if (error != 0) {
423 device_printf(dev, "could not set up interrupt\n");
424 goto fail;
425 }
426
427 if (bootverbose)
428 ieee80211_announce(ic);
429
430 return 0;
431 fail:
432 /* XXX fix */
433 iwi_detach(dev);
434 return ENXIO;
435 }
436
437 static int
iwi_detach(device_t dev)438 iwi_detach(device_t dev)
439 {
440 struct iwi_softc *sc = device_get_softc(dev);
441 struct ieee80211com *ic = &sc->sc_ic;
442
443 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
444
445 /* NB: do early to drain any pending tasks */
446 ieee80211_draintask(ic, &sc->sc_radiontask);
447 ieee80211_draintask(ic, &sc->sc_radiofftask);
448 ieee80211_draintask(ic, &sc->sc_restarttask);
449 ieee80211_draintask(ic, &sc->sc_disassoctask);
450 ieee80211_draintask(ic, &sc->sc_monitortask);
451
452 iwi_stop(sc);
453
454 ieee80211_ifdetach(ic);
455
456 iwi_put_firmware(sc);
457 iwi_release_fw_dma(sc);
458
459 iwi_free_cmd_ring(sc, &sc->cmdq);
460 iwi_free_tx_ring(sc, &sc->txq[0]);
461 iwi_free_tx_ring(sc, &sc->txq[1]);
462 iwi_free_tx_ring(sc, &sc->txq[2]);
463 iwi_free_tx_ring(sc, &sc->txq[3]);
464 iwi_free_rx_ring(sc, &sc->rxq);
465
466 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
467
468 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
469 sc->mem);
470
471 delete_unrhdr(sc->sc_unr);
472 mbufq_drain(&sc->sc_snd);
473
474 IWI_LOCK_DESTROY(sc);
475
476 return 0;
477 }
478
479 static struct ieee80211vap *
iwi_vap_create(struct ieee80211com * ic,const char name[IFNAMSIZ],int unit,enum ieee80211_opmode opmode,int flags,const uint8_t bssid[IEEE80211_ADDR_LEN],const uint8_t mac[IEEE80211_ADDR_LEN])480 iwi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
481 enum ieee80211_opmode opmode, int flags,
482 const uint8_t bssid[IEEE80211_ADDR_LEN],
483 const uint8_t mac[IEEE80211_ADDR_LEN])
484 {
485 struct iwi_softc *sc = ic->ic_softc;
486 struct iwi_vap *ivp;
487 struct ieee80211vap *vap;
488 int i;
489
490 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
491 return NULL;
492 /*
493 * Get firmware image (and possibly dma memory) on mode change.
494 */
495 if (iwi_get_firmware(sc, opmode))
496 return NULL;
497 /* allocate DMA memory for mapping firmware image */
498 i = sc->fw_fw.size;
499 if (sc->fw_boot.size > i)
500 i = sc->fw_boot.size;
501 /* XXX do we dma the ucode as well ? */
502 if (sc->fw_uc.size > i)
503 i = sc->fw_uc.size;
504 if (iwi_init_fw_dma(sc, i))
505 return NULL;
506
507 ivp = malloc(sizeof(struct iwi_vap), M_80211_VAP, M_WAITOK | M_ZERO);
508 vap = &ivp->iwi_vap;
509 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
510 /* override the default, the setting comes from the linux driver */
511 vap->iv_bmissthreshold = 24;
512 /* override with driver methods */
513 ivp->iwi_newstate = vap->iv_newstate;
514 vap->iv_newstate = iwi_newstate;
515
516 /* complete setup */
517 ieee80211_vap_attach(vap, ieee80211_media_change, iwi_media_status,
518 mac);
519 ic->ic_opmode = opmode;
520 return vap;
521 }
522
523 static void
iwi_vap_delete(struct ieee80211vap * vap)524 iwi_vap_delete(struct ieee80211vap *vap)
525 {
526 struct iwi_vap *ivp = IWI_VAP(vap);
527
528 ieee80211_vap_detach(vap);
529 free(ivp, M_80211_VAP);
530 }
531
532 static void
iwi_dma_map_addr(void * arg,bus_dma_segment_t * segs,int nseg,int error)533 iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
534 {
535 if (error != 0)
536 return;
537
538 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
539
540 *(bus_addr_t *)arg = segs[0].ds_addr;
541 }
542
543 static int
iwi_alloc_cmd_ring(struct iwi_softc * sc,struct iwi_cmd_ring * ring,int count)544 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, int count)
545 {
546 int error;
547
548 ring->count = count;
549 ring->queued = 0;
550 ring->cur = ring->next = 0;
551
552 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
553 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
554 count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE, 0,
555 NULL, NULL, &ring->desc_dmat);
556 if (error != 0) {
557 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
558 goto fail;
559 }
560
561 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
562 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
563 if (error != 0) {
564 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
565 goto fail;
566 }
567
568 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
569 count * IWI_CMD_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
570 if (error != 0) {
571 device_printf(sc->sc_dev, "could not load desc DMA map\n");
572 goto fail;
573 }
574
575 return 0;
576
577 fail: iwi_free_cmd_ring(sc, ring);
578 return error;
579 }
580
581 static void
iwi_reset_cmd_ring(struct iwi_softc * sc,struct iwi_cmd_ring * ring)582 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
583 {
584 ring->queued = 0;
585 ring->cur = ring->next = 0;
586 }
587
588 static void
iwi_free_cmd_ring(struct iwi_softc * sc,struct iwi_cmd_ring * ring)589 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
590 {
591 if (ring->desc != NULL) {
592 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
593 BUS_DMASYNC_POSTWRITE);
594 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
595 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
596 }
597
598 if (ring->desc_dmat != NULL)
599 bus_dma_tag_destroy(ring->desc_dmat);
600 }
601
602 static int
iwi_alloc_tx_ring(struct iwi_softc * sc,struct iwi_tx_ring * ring,int count,bus_addr_t csr_ridx,bus_addr_t csr_widx)603 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, int count,
604 bus_addr_t csr_ridx, bus_addr_t csr_widx)
605 {
606 int i, error;
607
608 ring->count = count;
609 ring->queued = 0;
610 ring->cur = ring->next = 0;
611 ring->csr_ridx = csr_ridx;
612 ring->csr_widx = csr_widx;
613
614 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
615 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
616 count * IWI_TX_DESC_SIZE, 1, count * IWI_TX_DESC_SIZE, 0, NULL,
617 NULL, &ring->desc_dmat);
618 if (error != 0) {
619 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
620 goto fail;
621 }
622
623 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
624 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
625 if (error != 0) {
626 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
627 goto fail;
628 }
629
630 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
631 count * IWI_TX_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
632 if (error != 0) {
633 device_printf(sc->sc_dev, "could not load desc DMA map\n");
634 goto fail;
635 }
636
637 ring->data = malloc(count * sizeof (struct iwi_tx_data), M_DEVBUF,
638 M_NOWAIT | M_ZERO);
639 if (ring->data == NULL) {
640 device_printf(sc->sc_dev, "could not allocate soft data\n");
641 error = ENOMEM;
642 goto fail;
643 }
644
645 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
646 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
647 IWI_MAX_NSEG, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
648 if (error != 0) {
649 device_printf(sc->sc_dev, "could not create data DMA tag\n");
650 goto fail;
651 }
652
653 for (i = 0; i < count; i++) {
654 error = bus_dmamap_create(ring->data_dmat, 0,
655 &ring->data[i].map);
656 if (error != 0) {
657 device_printf(sc->sc_dev, "could not create DMA map\n");
658 goto fail;
659 }
660 }
661
662 return 0;
663
664 fail: iwi_free_tx_ring(sc, ring);
665 return error;
666 }
667
668 static void
iwi_reset_tx_ring(struct iwi_softc * sc,struct iwi_tx_ring * ring)669 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
670 {
671 struct iwi_tx_data *data;
672 int i;
673
674 for (i = 0; i < ring->count; i++) {
675 data = &ring->data[i];
676
677 if (data->m != NULL) {
678 bus_dmamap_sync(ring->data_dmat, data->map,
679 BUS_DMASYNC_POSTWRITE);
680 bus_dmamap_unload(ring->data_dmat, data->map);
681 m_freem(data->m);
682 data->m = NULL;
683 }
684
685 if (data->ni != NULL) {
686 ieee80211_free_node(data->ni);
687 data->ni = NULL;
688 }
689 }
690
691 ring->queued = 0;
692 ring->cur = ring->next = 0;
693 }
694
695 static void
iwi_free_tx_ring(struct iwi_softc * sc,struct iwi_tx_ring * ring)696 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
697 {
698 struct iwi_tx_data *data;
699 int i;
700
701 if (ring->desc != NULL) {
702 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
703 BUS_DMASYNC_POSTWRITE);
704 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
705 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
706 }
707
708 if (ring->desc_dmat != NULL)
709 bus_dma_tag_destroy(ring->desc_dmat);
710
711 if (ring->data != NULL) {
712 for (i = 0; i < ring->count; i++) {
713 data = &ring->data[i];
714
715 if (data->m != NULL) {
716 bus_dmamap_sync(ring->data_dmat, data->map,
717 BUS_DMASYNC_POSTWRITE);
718 bus_dmamap_unload(ring->data_dmat, data->map);
719 m_freem(data->m);
720 }
721
722 if (data->ni != NULL)
723 ieee80211_free_node(data->ni);
724
725 if (data->map != NULL)
726 bus_dmamap_destroy(ring->data_dmat, data->map);
727 }
728
729 free(ring->data, M_DEVBUF);
730 }
731
732 if (ring->data_dmat != NULL)
733 bus_dma_tag_destroy(ring->data_dmat);
734 }
735
736 static int
iwi_alloc_rx_ring(struct iwi_softc * sc,struct iwi_rx_ring * ring,int count)737 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count)
738 {
739 struct iwi_rx_data *data;
740 int i, error;
741
742 ring->count = count;
743 ring->cur = 0;
744
745 ring->data = malloc(count * sizeof (struct iwi_rx_data), M_DEVBUF,
746 M_NOWAIT | M_ZERO);
747 if (ring->data == NULL) {
748 device_printf(sc->sc_dev, "could not allocate soft data\n");
749 error = ENOMEM;
750 goto fail;
751 }
752
753 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
754 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
755 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
756 if (error != 0) {
757 device_printf(sc->sc_dev, "could not create data DMA tag\n");
758 goto fail;
759 }
760
761 for (i = 0; i < count; i++) {
762 data = &ring->data[i];
763
764 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
765 if (error != 0) {
766 device_printf(sc->sc_dev, "could not create DMA map\n");
767 goto fail;
768 }
769
770 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
771 if (data->m == NULL) {
772 device_printf(sc->sc_dev,
773 "could not allocate rx mbuf\n");
774 error = ENOMEM;
775 goto fail;
776 }
777
778 error = bus_dmamap_load(ring->data_dmat, data->map,
779 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
780 &data->physaddr, 0);
781 if (error != 0) {
782 device_printf(sc->sc_dev,
783 "could not load rx buf DMA map");
784 goto fail;
785 }
786
787 data->reg = IWI_CSR_RX_BASE + i * 4;
788 }
789
790 return 0;
791
792 fail: iwi_free_rx_ring(sc, ring);
793 return error;
794 }
795
796 static void
iwi_reset_rx_ring(struct iwi_softc * sc,struct iwi_rx_ring * ring)797 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
798 {
799 ring->cur = 0;
800 }
801
802 static void
iwi_free_rx_ring(struct iwi_softc * sc,struct iwi_rx_ring * ring)803 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
804 {
805 struct iwi_rx_data *data;
806 int i;
807
808 if (ring->data != NULL) {
809 for (i = 0; i < ring->count; i++) {
810 data = &ring->data[i];
811
812 if (data->m != NULL) {
813 bus_dmamap_sync(ring->data_dmat, data->map,
814 BUS_DMASYNC_POSTREAD);
815 bus_dmamap_unload(ring->data_dmat, data->map);
816 m_freem(data->m);
817 }
818
819 if (data->map != NULL)
820 bus_dmamap_destroy(ring->data_dmat, data->map);
821 }
822
823 free(ring->data, M_DEVBUF);
824 }
825
826 if (ring->data_dmat != NULL)
827 bus_dma_tag_destroy(ring->data_dmat);
828 }
829
830 static int
iwi_shutdown(device_t dev)831 iwi_shutdown(device_t dev)
832 {
833 struct iwi_softc *sc = device_get_softc(dev);
834
835 iwi_stop(sc);
836 iwi_put_firmware(sc); /* ??? XXX */
837
838 return 0;
839 }
840
841 static int
iwi_suspend(device_t dev)842 iwi_suspend(device_t dev)
843 {
844 struct iwi_softc *sc = device_get_softc(dev);
845 struct ieee80211com *ic = &sc->sc_ic;
846
847 ieee80211_suspend_all(ic);
848 return 0;
849 }
850
851 static int
iwi_resume(device_t dev)852 iwi_resume(device_t dev)
853 {
854 struct iwi_softc *sc = device_get_softc(dev);
855 struct ieee80211com *ic = &sc->sc_ic;
856
857 pci_write_config(dev, 0x41, 0, 1);
858
859 ieee80211_resume_all(ic);
860 return 0;
861 }
862
863 static struct ieee80211_node *
iwi_node_alloc(struct ieee80211vap * vap,const uint8_t mac[IEEE80211_ADDR_LEN])864 iwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
865 {
866 struct iwi_node *in;
867
868 in = malloc(sizeof (struct iwi_node), M_80211_NODE, M_NOWAIT | M_ZERO);
869 if (in == NULL)
870 return NULL;
871 /* XXX assign sta table entry for adhoc */
872 in->in_station = -1;
873
874 return &in->in_node;
875 }
876
877 static void
iwi_node_free(struct ieee80211_node * ni)878 iwi_node_free(struct ieee80211_node *ni)
879 {
880 struct ieee80211com *ic = ni->ni_ic;
881 struct iwi_softc *sc = ic->ic_softc;
882 struct iwi_node *in = (struct iwi_node *)ni;
883
884 if (in->in_station != -1) {
885 DPRINTF(("%s mac %6D station %u\n", __func__,
886 ni->ni_macaddr, ":", in->in_station));
887 free_unr(sc->sc_unr, in->in_station);
888 }
889
890 sc->sc_node_free(ni);
891 }
892
893 /*
894 * Convert h/w rate code to IEEE rate code.
895 */
896 static int
iwi_cvtrate(int iwirate)897 iwi_cvtrate(int iwirate)
898 {
899 switch (iwirate) {
900 case IWI_RATE_DS1: return 2;
901 case IWI_RATE_DS2: return 4;
902 case IWI_RATE_DS5: return 11;
903 case IWI_RATE_DS11: return 22;
904 case IWI_RATE_OFDM6: return 12;
905 case IWI_RATE_OFDM9: return 18;
906 case IWI_RATE_OFDM12: return 24;
907 case IWI_RATE_OFDM18: return 36;
908 case IWI_RATE_OFDM24: return 48;
909 case IWI_RATE_OFDM36: return 72;
910 case IWI_RATE_OFDM48: return 96;
911 case IWI_RATE_OFDM54: return 108;
912 }
913 return 0;
914 }
915
916 /*
917 * The firmware automatically adapts the transmit speed. We report its current
918 * value here.
919 */
920 static void
iwi_media_status(if_t ifp,struct ifmediareq * imr)921 iwi_media_status(if_t ifp, struct ifmediareq *imr)
922 {
923 struct ieee80211vap *vap = if_getsoftc(ifp);
924 struct ieee80211com *ic = vap->iv_ic;
925 struct iwi_softc *sc = ic->ic_softc;
926 struct ieee80211_node *ni;
927
928 /* read current transmission rate from adapter */
929 ni = ieee80211_ref_node(vap->iv_bss);
930 ni->ni_txrate =
931 iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE));
932 ieee80211_free_node(ni);
933 ieee80211_media_status(ifp, imr);
934 }
935
936 static int
iwi_newstate(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)937 iwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
938 {
939 struct iwi_vap *ivp = IWI_VAP(vap);
940 struct ieee80211com *ic = vap->iv_ic;
941 struct iwi_softc *sc = ic->ic_softc;
942 IWI_LOCK_DECL;
943
944 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
945 ieee80211_state_name[vap->iv_state],
946 ieee80211_state_name[nstate], sc->flags));
947
948 IEEE80211_UNLOCK(ic);
949 IWI_LOCK(sc);
950 switch (nstate) {
951 case IEEE80211_S_INIT:
952 /*
953 * NB: don't try to do this if iwi_stop_master has
954 * shutdown the firmware and disabled interrupts.
955 */
956 if (vap->iv_state == IEEE80211_S_RUN &&
957 (sc->flags & IWI_FLAG_FW_INITED))
958 iwi_disassociate(sc, 0);
959 break;
960 case IEEE80211_S_AUTH:
961 iwi_auth_and_assoc(sc, vap);
962 break;
963 case IEEE80211_S_RUN:
964 if (vap->iv_opmode == IEEE80211_M_IBSS &&
965 vap->iv_state == IEEE80211_S_SCAN) {
966 /*
967 * XXX when joining an ibss network we are called
968 * with a SCAN -> RUN transition on scan complete.
969 * Use that to call iwi_auth_and_assoc. On completing
970 * the join we are then called again with an
971 * AUTH -> RUN transition and we want to do nothing.
972 * This is all totally bogus and needs to be redone.
973 */
974 iwi_auth_and_assoc(sc, vap);
975 } else if (vap->iv_opmode == IEEE80211_M_MONITOR)
976 ieee80211_runtask(ic, &sc->sc_monitortask);
977 break;
978 case IEEE80211_S_ASSOC:
979 /*
980 * If we are transitioning from AUTH then just wait
981 * for the ASSOC status to come back from the firmware.
982 * Otherwise we need to issue the association request.
983 */
984 if (vap->iv_state == IEEE80211_S_AUTH)
985 break;
986 iwi_auth_and_assoc(sc, vap);
987 break;
988 default:
989 break;
990 }
991 IWI_UNLOCK(sc);
992 IEEE80211_LOCK(ic);
993 return ivp->iwi_newstate(vap, nstate, arg);
994 }
995
996 /*
997 * WME parameters coming from IEEE 802.11e specification. These values are
998 * already declared in ieee80211_proto.c, but they are static so they can't
999 * be reused here.
1000 */
1001 static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = {
1002 { 0, 3, 5, 7, 0 }, /* WME_AC_BE */
1003 { 0, 3, 5, 10, 0 }, /* WME_AC_BK */
1004 { 0, 2, 4, 5, 188 }, /* WME_AC_VI */
1005 { 0, 2, 3, 4, 102 } /* WME_AC_VO */
1006 };
1007
1008 static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = {
1009 { 0, 3, 4, 6, 0 }, /* WME_AC_BE */
1010 { 0, 3, 4, 10, 0 }, /* WME_AC_BK */
1011 { 0, 2, 3, 4, 94 }, /* WME_AC_VI */
1012 { 0, 2, 2, 3, 47 } /* WME_AC_VO */
1013 };
1014 #define IWI_EXP2(v) htole16((1 << (v)) - 1)
1015 #define IWI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v))
1016
1017 static void
iwi_wme_init(struct iwi_softc * sc)1018 iwi_wme_init(struct iwi_softc *sc)
1019 {
1020 const struct wmeParams *wmep;
1021 int ac;
1022
1023 memset(sc->wme, 0, sizeof sc->wme);
1024 for (ac = 0; ac < WME_NUM_AC; ac++) {
1025 /* set WME values for CCK modulation */
1026 wmep = &iwi_wme_cck_params[ac];
1027 sc->wme[1].aifsn[ac] = wmep->wmep_aifsn;
1028 sc->wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1029 sc->wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1030 sc->wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1031 sc->wme[1].acm[ac] = wmep->wmep_acm;
1032
1033 /* set WME values for OFDM modulation */
1034 wmep = &iwi_wme_ofdm_params[ac];
1035 sc->wme[2].aifsn[ac] = wmep->wmep_aifsn;
1036 sc->wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1037 sc->wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1038 sc->wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1039 sc->wme[2].acm[ac] = wmep->wmep_acm;
1040 }
1041 }
1042
1043 static int
iwi_wme_setparams(struct iwi_softc * sc)1044 iwi_wme_setparams(struct iwi_softc *sc)
1045 {
1046 struct ieee80211com *ic = &sc->sc_ic;
1047 struct chanAccParams chp;
1048 const struct wmeParams *wmep;
1049 int ac;
1050
1051 ieee80211_wme_ic_getparams(ic, &chp);
1052
1053 for (ac = 0; ac < WME_NUM_AC; ac++) {
1054 /* set WME values for current operating mode */
1055 wmep = &chp.cap_wmeParams[ac];
1056 sc->wme[0].aifsn[ac] = wmep->wmep_aifsn;
1057 sc->wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1058 sc->wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1059 sc->wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1060 sc->wme[0].acm[ac] = wmep->wmep_acm;
1061 }
1062
1063 DPRINTF(("Setting WME parameters\n"));
1064 return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, sc->wme, sizeof sc->wme);
1065 }
1066 #undef IWI_USEC
1067 #undef IWI_EXP2
1068
1069 static int
iwi_wme_update(struct ieee80211com * ic)1070 iwi_wme_update(struct ieee80211com *ic)
1071 {
1072 struct iwi_softc *sc = ic->ic_softc;
1073 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1074 IWI_LOCK_DECL;
1075
1076 /*
1077 * We may be called to update the WME parameters in
1078 * the adapter at various places. If we're already
1079 * associated then initiate the request immediately;
1080 * otherwise we assume the params will get sent down
1081 * to the adapter as part of the work iwi_auth_and_assoc
1082 * does.
1083 */
1084 if (vap->iv_state == IEEE80211_S_RUN) {
1085 IWI_LOCK(sc);
1086 iwi_wme_setparams(sc);
1087 IWI_UNLOCK(sc);
1088 }
1089 return (0);
1090 }
1091
1092 static int
iwi_wme_setie(struct iwi_softc * sc)1093 iwi_wme_setie(struct iwi_softc *sc)
1094 {
1095 struct ieee80211_wme_info wme;
1096
1097 memset(&wme, 0, sizeof wme);
1098 wme.wme_id = IEEE80211_ELEMID_VENDOR;
1099 wme.wme_len = sizeof (struct ieee80211_wme_info) - 2;
1100 wme.wme_oui[0] = 0x00;
1101 wme.wme_oui[1] = 0x50;
1102 wme.wme_oui[2] = 0xf2;
1103 wme.wme_type = WME_OUI_TYPE;
1104 wme.wme_subtype = WME_INFO_OUI_SUBTYPE;
1105 wme.wme_version = WME_VERSION;
1106 wme.wme_info = 0;
1107
1108 DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len));
1109 return iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme);
1110 }
1111
1112 /*
1113 * Read 16 bits at address 'addr' from the serial EEPROM.
1114 */
1115 static uint16_t
iwi_read_prom_word(struct iwi_softc * sc,uint8_t addr)1116 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr)
1117 {
1118 uint32_t tmp;
1119 uint16_t val;
1120 int n;
1121
1122 /* clock C once before the first command */
1123 IWI_EEPROM_CTL(sc, 0);
1124 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1125 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1126 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1127
1128 /* write start bit (1) */
1129 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1130 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1131
1132 /* write READ opcode (10) */
1133 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1134 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1135 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1136 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1137
1138 /* write address A7-A0 */
1139 for (n = 7; n >= 0; n--) {
1140 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1141 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D));
1142 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1143 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C);
1144 }
1145
1146 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1147
1148 /* read data Q15-Q0 */
1149 val = 0;
1150 for (n = 15; n >= 0; n--) {
1151 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1152 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1153 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL);
1154 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n;
1155 }
1156
1157 IWI_EEPROM_CTL(sc, 0);
1158
1159 /* clear Chip Select and clock C */
1160 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1161 IWI_EEPROM_CTL(sc, 0);
1162 IWI_EEPROM_CTL(sc, IWI_EEPROM_C);
1163
1164 return val;
1165 }
1166
1167 static void
iwi_setcurchan(struct iwi_softc * sc,int chan)1168 iwi_setcurchan(struct iwi_softc *sc, int chan)
1169 {
1170 struct ieee80211com *ic = &sc->sc_ic;
1171
1172 sc->curchan = chan;
1173 ieee80211_radiotap_chan_change(ic);
1174 }
1175
1176 static void
iwi_frame_intr(struct iwi_softc * sc,struct iwi_rx_data * data,int i,struct iwi_frame * frame)1177 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i,
1178 struct iwi_frame *frame)
1179 {
1180 struct ieee80211com *ic = &sc->sc_ic;
1181 struct mbuf *mnew, *m;
1182 struct ieee80211_node *ni;
1183 int type, error, framelen;
1184 int8_t rssi, nf;
1185 IWI_LOCK_DECL;
1186
1187 framelen = le16toh(frame->len);
1188 if (framelen < IEEE80211_MIN_LEN || framelen > MCLBYTES) {
1189 /*
1190 * XXX >MCLBYTES is bogus as it means the h/w dma'd
1191 * out of bounds; need to figure out how to limit
1192 * frame size in the firmware
1193 */
1194 /* XXX stat */
1195 DPRINTFN(1,
1196 ("drop rx frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1197 le16toh(frame->len), frame->chan, frame->rssi,
1198 frame->rssi_dbm));
1199 return;
1200 }
1201
1202 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1203 le16toh(frame->len), frame->chan, frame->rssi, frame->rssi_dbm));
1204
1205 if (frame->chan != sc->curchan)
1206 iwi_setcurchan(sc, frame->chan);
1207
1208 /*
1209 * Try to allocate a new mbuf for this ring element and load it before
1210 * processing the current mbuf. If the ring element cannot be loaded,
1211 * drop the received packet and reuse the old mbuf. In the unlikely
1212 * case that the old mbuf can't be reloaded either, explicitly panic.
1213 */
1214 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1215 if (mnew == NULL) {
1216 counter_u64_add(ic->ic_ierrors, 1);
1217 return;
1218 }
1219
1220 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1221
1222 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1223 mtod(mnew, void *), MCLBYTES, iwi_dma_map_addr, &data->physaddr,
1224 0);
1225 if (error != 0) {
1226 m_freem(mnew);
1227
1228 /* try to reload the old mbuf */
1229 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1230 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
1231 &data->physaddr, 0);
1232 if (error != 0) {
1233 /* very unlikely that it will fail... */
1234 panic("%s: could not load old rx mbuf",
1235 device_get_name(sc->sc_dev));
1236 }
1237 counter_u64_add(ic->ic_ierrors, 1);
1238 return;
1239 }
1240
1241 /*
1242 * New mbuf successfully loaded, update Rx ring and continue
1243 * processing.
1244 */
1245 m = data->m;
1246 data->m = mnew;
1247 CSR_WRITE_4(sc, data->reg, data->physaddr);
1248
1249 /* finalize mbuf */
1250 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) +
1251 sizeof (struct iwi_frame) + framelen;
1252
1253 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame));
1254
1255 rssi = frame->rssi_dbm;
1256 nf = -95;
1257 if (ieee80211_radiotap_active(ic)) {
1258 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap;
1259
1260 tap->wr_flags = 0;
1261 tap->wr_antsignal = rssi;
1262 tap->wr_antnoise = nf;
1263 tap->wr_rate = iwi_cvtrate(frame->rate);
1264 tap->wr_antenna = frame->antenna;
1265 }
1266 IWI_UNLOCK(sc);
1267
1268 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1269 if (ni != NULL) {
1270 type = ieee80211_input(ni, m, rssi, nf);
1271 ieee80211_free_node(ni);
1272 } else
1273 type = ieee80211_input_all(ic, m, rssi, nf);
1274
1275 IWI_LOCK(sc);
1276 if (sc->sc_softled) {
1277 /*
1278 * Blink for any data frame. Otherwise do a
1279 * heartbeat-style blink when idle. The latter
1280 * is mainly for station mode where we depend on
1281 * periodic beacon frames to trigger the poll event.
1282 */
1283 if (type == IEEE80211_FC0_TYPE_DATA) {
1284 sc->sc_rxrate = frame->rate;
1285 iwi_led_event(sc, IWI_LED_RX);
1286 } else if (ticks - sc->sc_ledevent >= sc->sc_ledidle)
1287 iwi_led_event(sc, IWI_LED_POLL);
1288 }
1289 }
1290
1291 /*
1292 * Check for an association response frame to see if QoS
1293 * has been negotiated. We parse just enough to figure
1294 * out if we're supposed to use QoS. The proper solution
1295 * is to pass the frame up so ieee80211_input can do the
1296 * work but that's made hard by how things currently are
1297 * done in the driver.
1298 */
1299 static void
iwi_checkforqos(struct ieee80211vap * vap,const struct ieee80211_frame * wh,int len)1300 iwi_checkforqos(struct ieee80211vap *vap,
1301 const struct ieee80211_frame *wh, int len)
1302 {
1303 #define SUBTYPE(wh) ((wh)->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
1304 const uint8_t *frm, *efrm, *wme;
1305 struct ieee80211_node *ni;
1306 uint16_t capinfo, associd;
1307
1308 /* NB: +8 for capinfo, status, associd, and first ie */
1309 if (!(sizeof(*wh)+8 < len && len < IEEE80211_MAX_LEN) ||
1310 SUBTYPE(wh) != IEEE80211_FC0_SUBTYPE_ASSOC_RESP)
1311 return;
1312 /*
1313 * asresp frame format
1314 * [2] capability information
1315 * [2] status
1316 * [2] association ID
1317 * [tlv] supported rates
1318 * [tlv] extended supported rates
1319 * [tlv] WME
1320 */
1321 frm = (const uint8_t *)&wh[1];
1322 efrm = ((const uint8_t *) wh) + len;
1323
1324 capinfo = le16toh(*(const uint16_t *)frm);
1325 frm += 2;
1326 /* status */
1327 frm += 2;
1328 associd = le16toh(*(const uint16_t *)frm);
1329 frm += 2;
1330
1331 wme = NULL;
1332 while (efrm - frm > 1) {
1333 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
1334 switch (*frm) {
1335 case IEEE80211_ELEMID_VENDOR:
1336 if (iswmeoui(frm))
1337 wme = frm;
1338 break;
1339 }
1340 frm += frm[1] + 2;
1341 }
1342
1343 ni = ieee80211_ref_node(vap->iv_bss);
1344 ni->ni_capinfo = capinfo;
1345 ni->ni_associd = associd & 0x3fff;
1346 if (wme != NULL)
1347 ni->ni_flags |= IEEE80211_NODE_QOS;
1348 else
1349 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1350 ieee80211_free_node(ni);
1351 #undef SUBTYPE
1352 }
1353
1354 static void
iwi_notif_link_quality(struct iwi_softc * sc,struct iwi_notif * notif)1355 iwi_notif_link_quality(struct iwi_softc *sc, struct iwi_notif *notif)
1356 {
1357 struct iwi_notif_link_quality *lq;
1358 int len;
1359
1360 len = le16toh(notif->len);
1361
1362 DPRINTFN(5, ("Notification (%u) - len=%d, sizeof=%zu\n",
1363 notif->type,
1364 len,
1365 sizeof(struct iwi_notif_link_quality)
1366 ));
1367
1368 /* enforce length */
1369 if (len != sizeof(struct iwi_notif_link_quality)) {
1370 DPRINTFN(5, ("Notification: (%u) too short (%d)\n",
1371 notif->type,
1372 len));
1373 return;
1374 }
1375
1376 lq = (struct iwi_notif_link_quality *)(notif + 1);
1377 memcpy(&sc->sc_linkqual, lq, sizeof(sc->sc_linkqual));
1378 sc->sc_linkqual_valid = 1;
1379 }
1380
1381 /*
1382 * Task queue callbacks for iwi_notification_intr used to avoid LOR's.
1383 */
1384
1385 static void
iwi_notification_intr(struct iwi_softc * sc,struct iwi_notif * notif)1386 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif)
1387 {
1388 struct ieee80211com *ic = &sc->sc_ic;
1389 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1390 struct iwi_notif_scan_channel *chan;
1391 struct iwi_notif_scan_complete *scan;
1392 struct iwi_notif_authentication *auth;
1393 struct iwi_notif_association *assoc;
1394 struct iwi_notif_beacon_state *beacon;
1395
1396 switch (notif->type) {
1397 case IWI_NOTIF_TYPE_SCAN_CHANNEL:
1398 chan = (struct iwi_notif_scan_channel *)(notif + 1);
1399
1400 DPRINTFN(3, ("Scan of channel %u complete (%u)\n",
1401 ieee80211_ieee2mhz(chan->nchan, 0), chan->nchan));
1402
1403 /* Reset the timer, the scan is still going */
1404 sc->sc_state_timer = 3;
1405 break;
1406
1407 case IWI_NOTIF_TYPE_SCAN_COMPLETE:
1408 scan = (struct iwi_notif_scan_complete *)(notif + 1);
1409
1410 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan,
1411 scan->status));
1412
1413 IWI_STATE_END(sc, IWI_FW_SCANNING);
1414
1415 /*
1416 * Monitor mode works by doing a passive scan to set
1417 * the channel and enable rx. Because we don't want
1418 * to abort a scan lest the firmware crash we scan
1419 * for a short period of time and automatically restart
1420 * the scan when notified the sweep has completed.
1421 */
1422 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
1423 ieee80211_runtask(ic, &sc->sc_monitortask);
1424 break;
1425 }
1426
1427 if (scan->status == IWI_SCAN_COMPLETED) {
1428 /* NB: don't need to defer, net80211 does it for us */
1429 ieee80211_scan_next(vap);
1430 }
1431 break;
1432
1433 case IWI_NOTIF_TYPE_AUTHENTICATION:
1434 auth = (struct iwi_notif_authentication *)(notif + 1);
1435 switch (auth->state) {
1436 case IWI_AUTH_SUCCESS:
1437 DPRINTFN(2, ("Authentication succeeeded\n"));
1438 ieee80211_new_state(vap, IEEE80211_S_ASSOC, -1);
1439 break;
1440 case IWI_AUTH_FAIL:
1441 /*
1442 * These are delivered as an unsolicited deauth
1443 * (e.g. due to inactivity) or in response to an
1444 * associate request.
1445 */
1446 sc->flags &= ~IWI_FLAG_ASSOCIATED;
1447 if (vap->iv_state != IEEE80211_S_RUN) {
1448 DPRINTFN(2, ("Authentication failed\n"));
1449 vap->iv_stats.is_rx_auth_fail++;
1450 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1451 } else {
1452 DPRINTFN(2, ("Deauthenticated\n"));
1453 vap->iv_stats.is_rx_deauth++;
1454 }
1455 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1456 break;
1457 case IWI_AUTH_SENT_1:
1458 case IWI_AUTH_RECV_2:
1459 case IWI_AUTH_SEQ1_PASS:
1460 break;
1461 case IWI_AUTH_SEQ1_FAIL:
1462 DPRINTFN(2, ("Initial authentication handshake failed; "
1463 "you probably need shared key\n"));
1464 vap->iv_stats.is_rx_auth_fail++;
1465 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1466 /* XXX retry shared key when in auto */
1467 break;
1468 default:
1469 device_printf(sc->sc_dev,
1470 "unknown authentication state %u\n", auth->state);
1471 break;
1472 }
1473 break;
1474
1475 case IWI_NOTIF_TYPE_ASSOCIATION:
1476 assoc = (struct iwi_notif_association *)(notif + 1);
1477 switch (assoc->state) {
1478 case IWI_AUTH_SUCCESS:
1479 /* re-association, do nothing */
1480 break;
1481 case IWI_ASSOC_SUCCESS:
1482 DPRINTFN(2, ("Association succeeded\n"));
1483 sc->flags |= IWI_FLAG_ASSOCIATED;
1484 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1485 iwi_checkforqos(vap,
1486 (const struct ieee80211_frame *)(assoc+1),
1487 le16toh(notif->len) - sizeof(*assoc) - 1);
1488 ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
1489 break;
1490 case IWI_ASSOC_INIT:
1491 sc->flags &= ~IWI_FLAG_ASSOCIATED;
1492 switch (sc->fw_state) {
1493 case IWI_FW_ASSOCIATING:
1494 DPRINTFN(2, ("Association failed\n"));
1495 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1496 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1497 break;
1498
1499 case IWI_FW_DISASSOCIATING:
1500 DPRINTFN(2, ("Dissassociated\n"));
1501 IWI_STATE_END(sc, IWI_FW_DISASSOCIATING);
1502 vap->iv_stats.is_rx_disassoc++;
1503 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1504 break;
1505 }
1506 break;
1507 default:
1508 device_printf(sc->sc_dev,
1509 "unknown association state %u\n", assoc->state);
1510 break;
1511 }
1512 break;
1513
1514 case IWI_NOTIF_TYPE_BEACON:
1515 /* XXX check struct length */
1516 beacon = (struct iwi_notif_beacon_state *)(notif + 1);
1517
1518 DPRINTFN(5, ("Beacon state (%u, %u)\n",
1519 beacon->state, le32toh(beacon->number)));
1520
1521 if (beacon->state == IWI_BEACON_MISS) {
1522 /*
1523 * The firmware notifies us of every beacon miss
1524 * so we need to track the count against the
1525 * configured threshold before notifying the
1526 * 802.11 layer.
1527 * XXX try to roam, drop assoc only on much higher count
1528 */
1529 if (le32toh(beacon->number) >= vap->iv_bmissthreshold) {
1530 DPRINTF(("Beacon miss: %u >= %u\n",
1531 le32toh(beacon->number),
1532 vap->iv_bmissthreshold));
1533 vap->iv_stats.is_beacon_miss++;
1534 /*
1535 * It's pointless to notify the 802.11 layer
1536 * as it'll try to send a probe request (which
1537 * we'll discard) and then timeout and drop us
1538 * into scan state. Instead tell the firmware
1539 * to disassociate and then on completion we'll
1540 * kick the state machine to scan.
1541 */
1542 ieee80211_runtask(ic, &sc->sc_disassoctask);
1543 }
1544 }
1545 break;
1546
1547 case IWI_NOTIF_TYPE_CALIBRATION:
1548 case IWI_NOTIF_TYPE_NOISE:
1549 /* XXX handle? */
1550 DPRINTFN(5, ("Notification (%u)\n", notif->type));
1551 break;
1552 case IWI_NOTIF_TYPE_LINK_QUALITY:
1553 iwi_notif_link_quality(sc, notif);
1554 break;
1555
1556 default:
1557 DPRINTF(("unknown notification type %u flags 0x%x len %u\n",
1558 notif->type, notif->flags, le16toh(notif->len)));
1559 break;
1560 }
1561 }
1562
1563 static void
iwi_rx_intr(struct iwi_softc * sc)1564 iwi_rx_intr(struct iwi_softc *sc)
1565 {
1566 struct iwi_rx_data *data;
1567 struct iwi_hdr *hdr;
1568 uint32_t hw;
1569
1570 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX);
1571
1572 for (; sc->rxq.cur != hw;) {
1573 data = &sc->rxq.data[sc->rxq.cur];
1574
1575 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1576 BUS_DMASYNC_POSTREAD);
1577
1578 hdr = mtod(data->m, struct iwi_hdr *);
1579
1580 switch (hdr->type) {
1581 case IWI_HDR_TYPE_FRAME:
1582 iwi_frame_intr(sc, data, sc->rxq.cur,
1583 (struct iwi_frame *)(hdr + 1));
1584 break;
1585
1586 case IWI_HDR_TYPE_NOTIF:
1587 iwi_notification_intr(sc,
1588 (struct iwi_notif *)(hdr + 1));
1589 break;
1590
1591 default:
1592 device_printf(sc->sc_dev, "unknown hdr type %u\n",
1593 hdr->type);
1594 }
1595
1596 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1597
1598 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT;
1599 }
1600
1601 /* tell the firmware what we have processed */
1602 hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1;
1603 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw);
1604 }
1605
1606 static void
iwi_tx_intr(struct iwi_softc * sc,struct iwi_tx_ring * txq)1607 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq)
1608 {
1609 struct iwi_tx_data *data;
1610 uint32_t hw;
1611
1612 hw = CSR_READ_4(sc, txq->csr_ridx);
1613
1614 while (txq->next != hw) {
1615 data = &txq->data[txq->next];
1616 DPRINTFN(15, ("tx done idx=%u\n", txq->next));
1617 bus_dmamap_sync(txq->data_dmat, data->map,
1618 BUS_DMASYNC_POSTWRITE);
1619 bus_dmamap_unload(txq->data_dmat, data->map);
1620 ieee80211_tx_complete(data->ni, data->m, 0);
1621 data->ni = NULL;
1622 data->m = NULL;
1623 txq->queued--;
1624 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT;
1625 }
1626 sc->sc_tx_timer = 0;
1627 if (sc->sc_softled)
1628 iwi_led_event(sc, IWI_LED_TX);
1629 iwi_start(sc);
1630 }
1631
1632 static void
iwi_fatal_error_intr(struct iwi_softc * sc)1633 iwi_fatal_error_intr(struct iwi_softc *sc)
1634 {
1635 struct ieee80211com *ic = &sc->sc_ic;
1636 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1637
1638 device_printf(sc->sc_dev, "firmware error\n");
1639 if (vap != NULL)
1640 ieee80211_cancel_scan(vap);
1641 ieee80211_runtask(ic, &sc->sc_restarttask);
1642
1643 sc->flags &= ~IWI_FLAG_BUSY;
1644 sc->sc_busy_timer = 0;
1645 wakeup(sc);
1646 }
1647
1648 static void
iwi_radio_off_intr(struct iwi_softc * sc)1649 iwi_radio_off_intr(struct iwi_softc *sc)
1650 {
1651
1652 ieee80211_runtask(&sc->sc_ic, &sc->sc_radiofftask);
1653 }
1654
1655 static void
iwi_intr(void * arg)1656 iwi_intr(void *arg)
1657 {
1658 struct iwi_softc *sc = arg;
1659 uint32_t r;
1660 IWI_LOCK_DECL;
1661
1662 IWI_LOCK(sc);
1663
1664 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) {
1665 IWI_UNLOCK(sc);
1666 return;
1667 }
1668
1669 /* acknowledge interrupts */
1670 CSR_WRITE_4(sc, IWI_CSR_INTR, r);
1671
1672 if (r & IWI_INTR_FATAL_ERROR) {
1673 iwi_fatal_error_intr(sc);
1674 goto done;
1675 }
1676
1677 if (r & IWI_INTR_FW_INITED) {
1678 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)))
1679 wakeup(sc);
1680 }
1681
1682 if (r & IWI_INTR_RADIO_OFF)
1683 iwi_radio_off_intr(sc);
1684
1685 if (r & IWI_INTR_CMD_DONE) {
1686 sc->flags &= ~IWI_FLAG_BUSY;
1687 sc->sc_busy_timer = 0;
1688 wakeup(sc);
1689 }
1690
1691 if (r & IWI_INTR_TX1_DONE)
1692 iwi_tx_intr(sc, &sc->txq[0]);
1693
1694 if (r & IWI_INTR_TX2_DONE)
1695 iwi_tx_intr(sc, &sc->txq[1]);
1696
1697 if (r & IWI_INTR_TX3_DONE)
1698 iwi_tx_intr(sc, &sc->txq[2]);
1699
1700 if (r & IWI_INTR_TX4_DONE)
1701 iwi_tx_intr(sc, &sc->txq[3]);
1702
1703 if (r & IWI_INTR_RX_DONE)
1704 iwi_rx_intr(sc);
1705
1706 if (r & IWI_INTR_PARITY_ERROR) {
1707 /* XXX rate-limit */
1708 device_printf(sc->sc_dev, "parity error\n");
1709 }
1710 done:
1711 IWI_UNLOCK(sc);
1712 }
1713
1714 static int
iwi_cmd(struct iwi_softc * sc,uint8_t type,void * data,uint8_t len)1715 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len)
1716 {
1717 struct iwi_cmd_desc *desc;
1718
1719 IWI_LOCK_ASSERT(sc);
1720
1721 if (sc->flags & IWI_FLAG_BUSY) {
1722 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n",
1723 __func__, type);
1724 return EAGAIN;
1725 }
1726 sc->flags |= IWI_FLAG_BUSY;
1727 sc->sc_busy_timer = 2;
1728
1729 desc = &sc->cmdq.desc[sc->cmdq.cur];
1730
1731 desc->hdr.type = IWI_HDR_TYPE_COMMAND;
1732 desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1733 desc->type = type;
1734 desc->len = len;
1735 memcpy(desc->data, data, len);
1736
1737 bus_dmamap_sync(sc->cmdq.desc_dmat, sc->cmdq.desc_map,
1738 BUS_DMASYNC_PREWRITE);
1739
1740 DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur,
1741 type, len));
1742
1743 sc->cmdq.cur = (sc->cmdq.cur + 1) % IWI_CMD_RING_COUNT;
1744 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
1745
1746 return msleep(sc, &sc->sc_mtx, 0, "iwicmd", hz);
1747 }
1748
1749 static void
iwi_write_ibssnode(struct iwi_softc * sc,const u_int8_t addr[IEEE80211_ADDR_LEN],int entry)1750 iwi_write_ibssnode(struct iwi_softc *sc,
1751 const u_int8_t addr[IEEE80211_ADDR_LEN], int entry)
1752 {
1753 struct iwi_ibssnode node;
1754
1755 /* write node information into NIC memory */
1756 memset(&node, 0, sizeof node);
1757 IEEE80211_ADDR_COPY(node.bssid, addr);
1758
1759 DPRINTF(("%s mac %6D station %u\n", __func__, node.bssid, ":", entry));
1760
1761 CSR_WRITE_REGION_1(sc,
1762 IWI_CSR_NODE_BASE + entry * sizeof node,
1763 (uint8_t *)&node, sizeof node);
1764 }
1765
1766 static int
iwi_tx_start(struct iwi_softc * sc,struct mbuf * m0,struct ieee80211_node * ni,int ac)1767 iwi_tx_start(struct iwi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1768 int ac)
1769 {
1770 struct ieee80211vap *vap = ni->ni_vap;
1771 struct iwi_node *in = (struct iwi_node *)ni;
1772 const struct ieee80211_frame *wh;
1773 struct ieee80211_key *k;
1774 struct iwi_tx_ring *txq = &sc->txq[ac];
1775 struct iwi_tx_data *data;
1776 struct iwi_tx_desc *desc;
1777 struct mbuf *mnew;
1778 bus_dma_segment_t segs[IWI_MAX_NSEG];
1779 int error, nsegs, hdrlen, i;
1780 int ismcast, flags, xflags, staid;
1781
1782 IWI_LOCK_ASSERT(sc);
1783 wh = mtod(m0, const struct ieee80211_frame *);
1784 /* NB: only data frames use this path */
1785 hdrlen = ieee80211_hdrsize(wh);
1786 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1787 flags = xflags = 0;
1788
1789 if (!ismcast)
1790 flags |= IWI_DATA_FLAG_NEED_ACK;
1791 if (vap->iv_flags & IEEE80211_F_SHPREAMBLE)
1792 flags |= IWI_DATA_FLAG_SHPREAMBLE;
1793 if (IEEE80211_QOS_HAS_SEQ(wh)) {
1794 xflags |= IWI_DATA_XFLAG_QOS;
1795 if (ieee80211_wme_vap_ac_is_noack(vap, ac))
1796 flags &= ~IWI_DATA_FLAG_NEED_ACK;
1797 }
1798
1799 /*
1800 * This is only used in IBSS mode where the firmware expect an index
1801 * in a h/w table instead of a destination address.
1802 */
1803 if (vap->iv_opmode == IEEE80211_M_IBSS) {
1804 if (!ismcast) {
1805 if (in->in_station == -1) {
1806 in->in_station = alloc_unr(sc->sc_unr);
1807 if (in->in_station == -1) {
1808 /* h/w table is full */
1809 if_inc_counter(ni->ni_vap->iv_ifp,
1810 IFCOUNTER_OERRORS, 1);
1811 m_freem(m0);
1812 ieee80211_free_node(ni);
1813 return 0;
1814 }
1815 iwi_write_ibssnode(sc,
1816 ni->ni_macaddr, in->in_station);
1817 }
1818 staid = in->in_station;
1819 } else {
1820 /*
1821 * Multicast addresses have no associated node
1822 * so there will be no station entry. We reserve
1823 * entry 0 for one mcast address and use that.
1824 * If there are many being used this will be
1825 * expensive and we'll need to do a better job
1826 * but for now this handles the broadcast case.
1827 */
1828 if (!IEEE80211_ADDR_EQ(wh->i_addr1, sc->sc_mcast)) {
1829 IEEE80211_ADDR_COPY(sc->sc_mcast, wh->i_addr1);
1830 iwi_write_ibssnode(sc, sc->sc_mcast, 0);
1831 }
1832 staid = 0;
1833 }
1834 } else
1835 staid = 0;
1836
1837 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1838 k = ieee80211_crypto_encap(ni, m0);
1839 if (k == NULL) {
1840 m_freem(m0);
1841 return ENOBUFS;
1842 }
1843
1844 /* packet header may have moved, reset our local pointer */
1845 wh = mtod(m0, struct ieee80211_frame *);
1846 }
1847
1848 if (ieee80211_radiotap_active_vap(vap)) {
1849 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap;
1850
1851 tap->wt_flags = 0;
1852
1853 ieee80211_radiotap_tx(vap, m0);
1854 }
1855
1856 data = &txq->data[txq->cur];
1857 desc = &txq->desc[txq->cur];
1858
1859 /* save and trim IEEE802.11 header */
1860 m_copydata(m0, 0, hdrlen, (caddr_t)&desc->wh);
1861 m_adj(m0, hdrlen);
1862
1863 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, m0, segs,
1864 &nsegs, 0);
1865 if (error != 0 && error != EFBIG) {
1866 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1867 error);
1868 m_freem(m0);
1869 return error;
1870 }
1871 if (error != 0) {
1872 mnew = m_defrag(m0, M_NOWAIT);
1873 if (mnew == NULL) {
1874 device_printf(sc->sc_dev,
1875 "could not defragment mbuf\n");
1876 m_freem(m0);
1877 return ENOBUFS;
1878 }
1879 m0 = mnew;
1880
1881 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map,
1882 m0, segs, &nsegs, 0);
1883 if (error != 0) {
1884 device_printf(sc->sc_dev,
1885 "could not map mbuf (error %d)\n", error);
1886 m_freem(m0);
1887 return error;
1888 }
1889 }
1890
1891 data->m = m0;
1892 data->ni = ni;
1893
1894 desc->hdr.type = IWI_HDR_TYPE_DATA;
1895 desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1896 desc->station = staid;
1897 desc->cmd = IWI_DATA_CMD_TX;
1898 desc->len = htole16(m0->m_pkthdr.len);
1899 desc->flags = flags;
1900 desc->xflags = xflags;
1901
1902 #if 0
1903 if (vap->iv_flags & IEEE80211_F_PRIVACY)
1904 desc->wep_txkey = vap->iv_def_txkey;
1905 else
1906 #endif
1907 desc->flags |= IWI_DATA_FLAG_NO_WEP;
1908
1909 desc->nseg = htole32(nsegs);
1910 for (i = 0; i < nsegs; i++) {
1911 desc->seg_addr[i] = htole32(segs[i].ds_addr);
1912 desc->seg_len[i] = htole16(segs[i].ds_len);
1913 }
1914
1915 bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1916 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE);
1917
1918 DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n",
1919 ac, txq->cur, le16toh(desc->len), nsegs));
1920
1921 txq->queued++;
1922 txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT;
1923 CSR_WRITE_4(sc, txq->csr_widx, txq->cur);
1924
1925 return 0;
1926 }
1927
1928 static int
iwi_raw_xmit(struct ieee80211_node * ni,struct mbuf * m,const struct ieee80211_bpf_params * params)1929 iwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1930 const struct ieee80211_bpf_params *params)
1931 {
1932 /* no support; just discard */
1933 m_freem(m);
1934 ieee80211_free_node(ni);
1935 return 0;
1936 }
1937
1938 static int
iwi_transmit(struct ieee80211com * ic,struct mbuf * m)1939 iwi_transmit(struct ieee80211com *ic, struct mbuf *m)
1940 {
1941 struct iwi_softc *sc = ic->ic_softc;
1942 int error;
1943 IWI_LOCK_DECL;
1944
1945 IWI_LOCK(sc);
1946 if (!sc->sc_running) {
1947 IWI_UNLOCK(sc);
1948 return (ENXIO);
1949 }
1950 error = mbufq_enqueue(&sc->sc_snd, m);
1951 if (error) {
1952 IWI_UNLOCK(sc);
1953 return (error);
1954 }
1955 iwi_start(sc);
1956 IWI_UNLOCK(sc);
1957 return (0);
1958 }
1959
1960 static void
iwi_start(struct iwi_softc * sc)1961 iwi_start(struct iwi_softc *sc)
1962 {
1963 struct mbuf *m;
1964 struct ieee80211_node *ni;
1965 int ac;
1966
1967 IWI_LOCK_ASSERT(sc);
1968
1969 while ((m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
1970 ac = M_WME_GETAC(m);
1971 if (sc->txq[ac].queued > IWI_TX_RING_COUNT - 8) {
1972 /* there is no place left in this ring; tail drop */
1973 /* XXX tail drop */
1974 mbufq_prepend(&sc->sc_snd, m);
1975 break;
1976 }
1977 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1978 if (iwi_tx_start(sc, m, ni, ac) != 0) {
1979 if_inc_counter(ni->ni_vap->iv_ifp,
1980 IFCOUNTER_OERRORS, 1);
1981 ieee80211_free_node(ni);
1982 break;
1983 }
1984 sc->sc_tx_timer = 5;
1985 }
1986 }
1987
1988 static void
iwi_watchdog(void * arg)1989 iwi_watchdog(void *arg)
1990 {
1991 struct iwi_softc *sc = arg;
1992 struct ieee80211com *ic = &sc->sc_ic;
1993
1994 IWI_LOCK_ASSERT(sc);
1995
1996 if (sc->sc_tx_timer > 0) {
1997 if (--sc->sc_tx_timer == 0) {
1998 device_printf(sc->sc_dev, "device timeout\n");
1999 counter_u64_add(ic->ic_oerrors, 1);
2000 ieee80211_runtask(ic, &sc->sc_restarttask);
2001 }
2002 }
2003 if (sc->sc_state_timer > 0) {
2004 if (--sc->sc_state_timer == 0) {
2005 device_printf(sc->sc_dev,
2006 "firmware stuck in state %d, resetting\n",
2007 sc->fw_state);
2008 if (sc->fw_state == IWI_FW_SCANNING)
2009 ieee80211_cancel_scan(TAILQ_FIRST(&ic->ic_vaps));
2010 ieee80211_runtask(ic, &sc->sc_restarttask);
2011 sc->sc_state_timer = 3;
2012 }
2013 }
2014 if (sc->sc_busy_timer > 0) {
2015 if (--sc->sc_busy_timer == 0) {
2016 device_printf(sc->sc_dev,
2017 "firmware command timeout, resetting\n");
2018 ieee80211_runtask(ic, &sc->sc_restarttask);
2019 }
2020 }
2021 callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
2022 }
2023
2024 static void
iwi_parent(struct ieee80211com * ic)2025 iwi_parent(struct ieee80211com *ic)
2026 {
2027 struct iwi_softc *sc = ic->ic_softc;
2028 int startall = 0;
2029 IWI_LOCK_DECL;
2030
2031 IWI_LOCK(sc);
2032 if (ic->ic_nrunning > 0) {
2033 if (!sc->sc_running) {
2034 iwi_init_locked(sc);
2035 startall = 1;
2036 }
2037 } else if (sc->sc_running)
2038 iwi_stop_locked(sc);
2039 IWI_UNLOCK(sc);
2040 if (startall)
2041 ieee80211_start_all(ic);
2042 }
2043
2044 static int
iwi_ioctl(struct ieee80211com * ic,u_long cmd,void * data)2045 iwi_ioctl(struct ieee80211com *ic, u_long cmd, void *data)
2046 {
2047 struct ifreq *ifr = data;
2048 struct iwi_softc *sc = ic->ic_softc;
2049 int error;
2050 IWI_LOCK_DECL;
2051
2052 IWI_LOCK(sc);
2053 switch (cmd) {
2054 case SIOCGIWISTATS:
2055 /* XXX validate permissions/memory/etc? */
2056 error = copyout(&sc->sc_linkqual, ifr_data_get_ptr(ifr),
2057 sizeof(struct iwi_notif_link_quality));
2058 break;
2059 case SIOCZIWISTATS:
2060 memset(&sc->sc_linkqual, 0,
2061 sizeof(struct iwi_notif_link_quality));
2062 error = 0;
2063 break;
2064 default:
2065 error = ENOTTY;
2066 break;
2067 }
2068 IWI_UNLOCK(sc);
2069
2070 return (error);
2071 }
2072
2073 static void
iwi_stop_master(struct iwi_softc * sc)2074 iwi_stop_master(struct iwi_softc *sc)
2075 {
2076 uint32_t tmp;
2077 int ntries;
2078
2079 /* disable interrupts */
2080 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0);
2081
2082 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER);
2083 for (ntries = 0; ntries < 5; ntries++) {
2084 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2085 break;
2086 DELAY(10);
2087 }
2088 if (ntries == 5)
2089 device_printf(sc->sc_dev, "timeout waiting for master\n");
2090
2091 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2092 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET);
2093
2094 sc->flags &= ~IWI_FLAG_FW_INITED;
2095 }
2096
2097 static int
iwi_reset(struct iwi_softc * sc)2098 iwi_reset(struct iwi_softc *sc)
2099 {
2100 uint32_t tmp;
2101 int i, ntries;
2102
2103 iwi_stop_master(sc);
2104
2105 tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2106 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2107
2108 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST);
2109
2110 /* wait for clock stabilization */
2111 for (ntries = 0; ntries < 1000; ntries++) {
2112 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY)
2113 break;
2114 DELAY(200);
2115 }
2116 if (ntries == 1000) {
2117 device_printf(sc->sc_dev,
2118 "timeout waiting for clock stabilization\n");
2119 return EIO;
2120 }
2121
2122 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2123 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SOFT_RESET);
2124
2125 DELAY(10);
2126
2127 tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2128 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2129
2130 /* clear NIC memory */
2131 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0);
2132 for (i = 0; i < 0xc000; i++)
2133 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2134
2135 return 0;
2136 }
2137
2138 static const struct iwi_firmware_ohdr *
iwi_setup_ofw(struct iwi_softc * sc,struct iwi_fw * fw)2139 iwi_setup_ofw(struct iwi_softc *sc, struct iwi_fw *fw)
2140 {
2141 const struct firmware *fp = fw->fp;
2142 const struct iwi_firmware_ohdr *hdr;
2143
2144 if (fp->datasize < sizeof (struct iwi_firmware_ohdr)) {
2145 device_printf(sc->sc_dev, "image '%s' too small\n", fp->name);
2146 return NULL;
2147 }
2148 hdr = (const struct iwi_firmware_ohdr *)fp->data;
2149 if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) ||
2150 (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) {
2151 device_printf(sc->sc_dev, "version for '%s' %d.%d != %d.%d\n",
2152 fp->name, IWI_FW_GET_MAJOR(le32toh(hdr->version)),
2153 IWI_FW_GET_MINOR(le32toh(hdr->version)), IWI_FW_REQ_MAJOR,
2154 IWI_FW_REQ_MINOR);
2155 return NULL;
2156 }
2157 fw->data = ((const char *) fp->data) + sizeof(struct iwi_firmware_ohdr);
2158 fw->size = fp->datasize - sizeof(struct iwi_firmware_ohdr);
2159 fw->name = fp->name;
2160 return hdr;
2161 }
2162
2163 static const struct iwi_firmware_ohdr *
iwi_setup_oucode(struct iwi_softc * sc,struct iwi_fw * fw)2164 iwi_setup_oucode(struct iwi_softc *sc, struct iwi_fw *fw)
2165 {
2166 const struct iwi_firmware_ohdr *hdr;
2167
2168 hdr = iwi_setup_ofw(sc, fw);
2169 if (hdr != NULL && le32toh(hdr->mode) != IWI_FW_MODE_UCODE) {
2170 device_printf(sc->sc_dev, "%s is not a ucode image\n",
2171 fw->name);
2172 hdr = NULL;
2173 }
2174 return hdr;
2175 }
2176
2177 static void
iwi_getfw(struct iwi_fw * fw,const char * fwname,struct iwi_fw * uc,const char * ucname)2178 iwi_getfw(struct iwi_fw *fw, const char *fwname,
2179 struct iwi_fw *uc, const char *ucname)
2180 {
2181 if (fw->fp == NULL)
2182 fw->fp = firmware_get(fwname);
2183 /* NB: pre-3.0 ucode is packaged separately */
2184 if (uc->fp == NULL && fw->fp != NULL && fw->fp->version < 300)
2185 uc->fp = firmware_get(ucname);
2186 }
2187
2188 /*
2189 * Get the required firmware images if not already loaded.
2190 * Note that we hold firmware images so long as the device
2191 * is marked up in case we need to reload them on device init.
2192 * This is necessary because we re-init the device sometimes
2193 * from a context where we cannot read from the filesystem
2194 * (e.g. from the taskqueue thread when rfkill is re-enabled).
2195 * XXX return 0 on success, 1 on error.
2196 *
2197 * NB: the order of get'ing and put'ing images here is
2198 * intentional to support handling firmware images bundled
2199 * by operating mode and/or all together in one file with
2200 * the boot firmware as "master".
2201 */
2202 static int
iwi_get_firmware(struct iwi_softc * sc,enum ieee80211_opmode opmode)2203 iwi_get_firmware(struct iwi_softc *sc, enum ieee80211_opmode opmode)
2204 {
2205 const struct iwi_firmware_hdr *hdr;
2206 const struct firmware *fp;
2207
2208 /* invalidate cached firmware on mode change */
2209 if (sc->fw_mode != opmode)
2210 iwi_put_firmware(sc);
2211
2212 switch (opmode) {
2213 case IEEE80211_M_STA:
2214 iwi_getfw(&sc->fw_fw, "iwi_bss", &sc->fw_uc, "iwi_ucode_bss");
2215 break;
2216 case IEEE80211_M_IBSS:
2217 iwi_getfw(&sc->fw_fw, "iwi_ibss", &sc->fw_uc, "iwi_ucode_ibss");
2218 break;
2219 case IEEE80211_M_MONITOR:
2220 iwi_getfw(&sc->fw_fw, "iwi_monitor",
2221 &sc->fw_uc, "iwi_ucode_monitor");
2222 break;
2223 default:
2224 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode);
2225 return EINVAL;
2226 }
2227 fp = sc->fw_fw.fp;
2228 if (fp == NULL) {
2229 device_printf(sc->sc_dev, "could not load firmware\n");
2230 goto bad;
2231 }
2232 if (fp->version < 300) {
2233 /*
2234 * Firmware prior to 3.0 was packaged as separate
2235 * boot, firmware, and ucode images. Verify the
2236 * ucode image was read in, retrieve the boot image
2237 * if needed, and check version stamps for consistency.
2238 * The version stamps in the data are also checked
2239 * above; this is a bit paranoid but is a cheap
2240 * safeguard against mis-packaging.
2241 */
2242 if (sc->fw_uc.fp == NULL) {
2243 device_printf(sc->sc_dev, "could not load ucode\n");
2244 goto bad;
2245 }
2246 if (sc->fw_boot.fp == NULL) {
2247 sc->fw_boot.fp = firmware_get("iwi_boot");
2248 if (sc->fw_boot.fp == NULL) {
2249 device_printf(sc->sc_dev,
2250 "could not load boot firmware\n");
2251 goto bad;
2252 }
2253 }
2254 if (sc->fw_boot.fp->version != sc->fw_fw.fp->version ||
2255 sc->fw_boot.fp->version != sc->fw_uc.fp->version) {
2256 device_printf(sc->sc_dev,
2257 "firmware version mismatch: "
2258 "'%s' is %d, '%s' is %d, '%s' is %d\n",
2259 sc->fw_boot.fp->name, sc->fw_boot.fp->version,
2260 sc->fw_uc.fp->name, sc->fw_uc.fp->version,
2261 sc->fw_fw.fp->name, sc->fw_fw.fp->version
2262 );
2263 goto bad;
2264 }
2265 /*
2266 * Check and setup each image.
2267 */
2268 if (iwi_setup_oucode(sc, &sc->fw_uc) == NULL ||
2269 iwi_setup_ofw(sc, &sc->fw_boot) == NULL ||
2270 iwi_setup_ofw(sc, &sc->fw_fw) == NULL)
2271 goto bad;
2272 } else {
2273 /*
2274 * Check and setup combined image.
2275 */
2276 if (fp->datasize < sizeof(struct iwi_firmware_hdr)) {
2277 device_printf(sc->sc_dev, "image '%s' too small\n",
2278 fp->name);
2279 goto bad;
2280 }
2281 hdr = (const struct iwi_firmware_hdr *)fp->data;
2282 if (fp->datasize < sizeof(*hdr) + le32toh(hdr->bsize) + le32toh(hdr->usize)
2283 + le32toh(hdr->fsize)) {
2284 device_printf(sc->sc_dev, "image '%s' too small (2)\n",
2285 fp->name);
2286 goto bad;
2287 }
2288 sc->fw_boot.data = ((const char *) fp->data) + sizeof(*hdr);
2289 sc->fw_boot.size = le32toh(hdr->bsize);
2290 sc->fw_boot.name = fp->name;
2291 sc->fw_uc.data = sc->fw_boot.data + sc->fw_boot.size;
2292 sc->fw_uc.size = le32toh(hdr->usize);
2293 sc->fw_uc.name = fp->name;
2294 sc->fw_fw.data = sc->fw_uc.data + sc->fw_uc.size;
2295 sc->fw_fw.size = le32toh(hdr->fsize);
2296 sc->fw_fw.name = fp->name;
2297 }
2298 #if 0
2299 device_printf(sc->sc_dev, "boot %d ucode %d fw %d bytes\n",
2300 sc->fw_boot.size, sc->fw_uc.size, sc->fw_fw.size);
2301 #endif
2302
2303 sc->fw_mode = opmode;
2304 return 0;
2305 bad:
2306 iwi_put_firmware(sc);
2307 return 1;
2308 }
2309
2310 static void
iwi_put_fw(struct iwi_fw * fw)2311 iwi_put_fw(struct iwi_fw *fw)
2312 {
2313 if (fw->fp != NULL) {
2314 firmware_put(fw->fp, FIRMWARE_UNLOAD);
2315 fw->fp = NULL;
2316 }
2317 fw->data = NULL;
2318 fw->size = 0;
2319 fw->name = NULL;
2320 }
2321
2322 /*
2323 * Release any cached firmware images.
2324 */
2325 static void
iwi_put_firmware(struct iwi_softc * sc)2326 iwi_put_firmware(struct iwi_softc *sc)
2327 {
2328 iwi_put_fw(&sc->fw_uc);
2329 iwi_put_fw(&sc->fw_fw);
2330 iwi_put_fw(&sc->fw_boot);
2331 }
2332
2333 static int
iwi_load_ucode(struct iwi_softc * sc,const struct iwi_fw * fw)2334 iwi_load_ucode(struct iwi_softc *sc, const struct iwi_fw *fw)
2335 {
2336 uint32_t tmp;
2337 const uint16_t *w;
2338 const char *uc = fw->data;
2339 size_t size = fw->size;
2340 int i, ntries, error;
2341
2342 IWI_LOCK_ASSERT(sc);
2343 error = 0;
2344 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
2345 IWI_RST_STOP_MASTER);
2346 for (ntries = 0; ntries < 5; ntries++) {
2347 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2348 break;
2349 DELAY(10);
2350 }
2351 if (ntries == 5) {
2352 device_printf(sc->sc_dev, "timeout waiting for master\n");
2353 error = EIO;
2354 goto fail;
2355 }
2356
2357 MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
2358 DELAY(5000);
2359
2360 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2361 tmp &= ~IWI_RST_PRINCETON_RESET;
2362 CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2363
2364 DELAY(5000);
2365 MEM_WRITE_4(sc, 0x3000e0, 0);
2366 DELAY(1000);
2367 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 1);
2368 DELAY(1000);
2369 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 0);
2370 DELAY(1000);
2371 MEM_WRITE_1(sc, 0x200000, 0x00);
2372 MEM_WRITE_1(sc, 0x200000, 0x40);
2373 DELAY(1000);
2374
2375 /* write microcode into adapter memory */
2376 for (w = (const uint16_t *)uc; size > 0; w++, size -= 2)
2377 MEM_WRITE_2(sc, 0x200010, htole16(*w));
2378
2379 MEM_WRITE_1(sc, 0x200000, 0x00);
2380 MEM_WRITE_1(sc, 0x200000, 0x80);
2381
2382 /* wait until we get an answer */
2383 for (ntries = 0; ntries < 100; ntries++) {
2384 if (MEM_READ_1(sc, 0x200000) & 1)
2385 break;
2386 DELAY(100);
2387 }
2388 if (ntries == 100) {
2389 device_printf(sc->sc_dev,
2390 "timeout waiting for ucode to initialize\n");
2391 error = EIO;
2392 goto fail;
2393 }
2394
2395 /* read the answer or the firmware will not initialize properly */
2396 for (i = 0; i < 7; i++)
2397 MEM_READ_4(sc, 0x200004);
2398
2399 MEM_WRITE_1(sc, 0x200000, 0x00);
2400
2401 fail:
2402 return error;
2403 }
2404
2405 /* macro to handle unaligned little endian data in firmware image */
2406 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2407
2408 static int
iwi_load_firmware(struct iwi_softc * sc,const struct iwi_fw * fw)2409 iwi_load_firmware(struct iwi_softc *sc, const struct iwi_fw *fw)
2410 {
2411 u_char *p, *end;
2412 uint32_t sentinel, ctl, src, dst, sum, len, mlen, tmp;
2413 int ntries, error;
2414
2415 IWI_LOCK_ASSERT(sc);
2416
2417 /* copy firmware image to DMA memory */
2418 memcpy(sc->fw_virtaddr, fw->data, fw->size);
2419
2420 /* make sure the adapter will get up-to-date values */
2421 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_PREWRITE);
2422
2423 /* tell the adapter where the command blocks are stored */
2424 MEM_WRITE_4(sc, 0x3000a0, 0x27000);
2425
2426 /*
2427 * Store command blocks into adapter's internal memory using register
2428 * indirections. The adapter will read the firmware image through DMA
2429 * using information stored in command blocks.
2430 */
2431 src = sc->fw_physaddr;
2432 p = sc->fw_virtaddr;
2433 end = p + fw->size;
2434 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000);
2435
2436 while (p < end) {
2437 dst = GETLE32(p); p += 4; src += 4;
2438 len = GETLE32(p); p += 4; src += 4;
2439 p += len;
2440
2441 while (len > 0) {
2442 mlen = min(len, IWI_CB_MAXDATALEN);
2443
2444 ctl = IWI_CB_DEFAULT_CTL | mlen;
2445 sum = ctl ^ src ^ dst;
2446
2447 /* write a command block */
2448 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl);
2449 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src);
2450 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst);
2451 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum);
2452
2453 src += mlen;
2454 dst += mlen;
2455 len -= mlen;
2456 }
2457 }
2458
2459 /* write a fictive final command block (sentinel) */
2460 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR);
2461 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2462
2463 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2464 tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER);
2465 CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2466
2467 /* tell the adapter to start processing command blocks */
2468 MEM_WRITE_4(sc, 0x3000a4, 0x540100);
2469
2470 /* wait until the adapter reaches the sentinel */
2471 for (ntries = 0; ntries < 400; ntries++) {
2472 if (MEM_READ_4(sc, 0x3000d0) >= sentinel)
2473 break;
2474 DELAY(100);
2475 }
2476 /* sync dma, just in case */
2477 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_POSTWRITE);
2478 if (ntries == 400) {
2479 device_printf(sc->sc_dev,
2480 "timeout processing command blocks for %s firmware\n",
2481 fw->name);
2482 return EIO;
2483 }
2484
2485 /* we're done with command blocks processing */
2486 MEM_WRITE_4(sc, 0x3000a4, 0x540c00);
2487
2488 /* allow interrupts so we know when the firmware is ready */
2489 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK);
2490
2491 /* tell the adapter to initialize the firmware */
2492 CSR_WRITE_4(sc, IWI_CSR_RST, 0);
2493
2494 tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2495 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY);
2496
2497 /* wait at most one second for firmware initialization to complete */
2498 if ((error = msleep(sc, &sc->sc_mtx, 0, "iwiinit", hz)) != 0) {
2499 device_printf(sc->sc_dev, "timeout waiting for %s firmware "
2500 "initialization to complete\n", fw->name);
2501 }
2502
2503 return error;
2504 }
2505
2506 static int
iwi_setpowermode(struct iwi_softc * sc,struct ieee80211vap * vap)2507 iwi_setpowermode(struct iwi_softc *sc, struct ieee80211vap *vap)
2508 {
2509 uint32_t data;
2510
2511 if (vap->iv_flags & IEEE80211_F_PMGTON) {
2512 /* XXX set more fine-grained operation */
2513 data = htole32(IWI_POWER_MODE_MAX);
2514 } else
2515 data = htole32(IWI_POWER_MODE_CAM);
2516
2517 DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2518 return iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data);
2519 }
2520
2521 static int
iwi_setwepkeys(struct iwi_softc * sc,struct ieee80211vap * vap)2522 iwi_setwepkeys(struct iwi_softc *sc, struct ieee80211vap *vap)
2523 {
2524 struct iwi_wep_key wepkey;
2525 struct ieee80211_key *wk;
2526 int error, i;
2527
2528 for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2529 wk = &vap->iv_nw_keys[i];
2530
2531 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY;
2532 wepkey.idx = i;
2533 wepkey.len = wk->wk_keylen;
2534 memset(wepkey.key, 0, sizeof wepkey.key);
2535 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2536 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2537 wepkey.len));
2538 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey,
2539 sizeof wepkey);
2540 if (error != 0)
2541 return error;
2542 }
2543 return 0;
2544 }
2545
2546 static int
iwi_set_rateset(struct iwi_softc * sc,const struct ieee80211_rateset * net_rs,int mode,int type)2547 iwi_set_rateset(struct iwi_softc *sc, const struct ieee80211_rateset *net_rs,
2548 int mode, int type)
2549 {
2550 struct iwi_rateset rs;
2551
2552 memset(&rs, 0, sizeof(rs));
2553 rs.mode = mode;
2554 rs.type = type;
2555 rs.nrates = net_rs->rs_nrates;
2556 if (rs.nrates > nitems(rs.rates)) {
2557 DPRINTF(("Truncating negotiated rate set from %u\n",
2558 rs.nrates));
2559 rs.nrates = nitems(rs.rates);
2560 }
2561 memcpy(rs.rates, net_rs->rs_rates, rs.nrates);
2562 DPRINTF(("Setting .11%c%s %s rates (%u)\n",
2563 mode == IWI_MODE_11A ? 'a' : 'b',
2564 mode == IWI_MODE_11G ? "g" : "",
2565 type == IWI_RATESET_TYPE_SUPPORTED ? "supported" : "negotiated",
2566 rs.nrates));
2567
2568 return (iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof(rs)));
2569 }
2570
2571 static int
iwi_config(struct iwi_softc * sc)2572 iwi_config(struct iwi_softc *sc)
2573 {
2574 struct ieee80211com *ic = &sc->sc_ic;
2575 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2576 struct iwi_configuration config;
2577 struct iwi_txpower power;
2578 uint8_t *macaddr;
2579 uint32_t data;
2580 int error, i;
2581
2582 IWI_LOCK_ASSERT(sc);
2583
2584 macaddr = vap ? vap->iv_myaddr : ic->ic_macaddr;
2585 DPRINTF(("Setting MAC address to %6D\n", macaddr, ":"));
2586 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, macaddr,
2587 IEEE80211_ADDR_LEN);
2588 if (error != 0)
2589 return error;
2590
2591 memset(&config, 0, sizeof config);
2592 config.bluetooth_coexistence = sc->bluetooth;
2593 config.silence_threshold = 0x1e;
2594 config.antenna = sc->antenna;
2595 config.multicast_enabled = 1;
2596 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2597 config.disable_unicast_decryption = 1;
2598 config.disable_multicast_decryption = 1;
2599 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2600 config.allow_invalid_frames = 1;
2601 config.allow_beacon_and_probe_resp = 1;
2602 config.allow_mgt = 1;
2603 }
2604 DPRINTF(("Configuring adapter\n"));
2605 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2606 if (error != 0)
2607 return error;
2608 if (ic->ic_opmode == IEEE80211_M_IBSS) {
2609 power.mode = IWI_MODE_11B;
2610 power.nchan = 11;
2611 for (i = 0; i < 11; i++) {
2612 power.chan[i].chan = i + 1;
2613 power.chan[i].power = IWI_TXPOWER_MAX;
2614 }
2615 DPRINTF(("Setting .11b channels tx power\n"));
2616 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2617 if (error != 0)
2618 return error;
2619
2620 power.mode = IWI_MODE_11G;
2621 DPRINTF(("Setting .11g channels tx power\n"));
2622 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2623 if (error != 0)
2624 return error;
2625 }
2626
2627 error = iwi_set_rateset(sc, &ic->ic_sup_rates[IEEE80211_MODE_11G],
2628 IWI_MODE_11G, IWI_RATESET_TYPE_SUPPORTED);
2629 if (error != 0)
2630 return error;
2631
2632 error = iwi_set_rateset(sc, &ic->ic_sup_rates[IEEE80211_MODE_11A],
2633 IWI_MODE_11A, IWI_RATESET_TYPE_SUPPORTED);
2634 if (error != 0)
2635 return error;
2636
2637 data = htole32(arc4random());
2638 DPRINTF(("Setting initialization vector to %u\n", le32toh(data)));
2639 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data);
2640 if (error != 0)
2641 return error;
2642
2643 /* enable adapter */
2644 DPRINTF(("Enabling adapter\n"));
2645 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0);
2646 }
2647
2648 static __inline void
set_scan_type(struct iwi_scan_ext * scan,int ix,int scan_type)2649 set_scan_type(struct iwi_scan_ext *scan, int ix, int scan_type)
2650 {
2651 uint8_t *st = &scan->scan_type[ix / 2];
2652 if (ix % 2)
2653 *st = (*st & 0xf0) | ((scan_type & 0xf) << 0);
2654 else
2655 *st = (*st & 0x0f) | ((scan_type & 0xf) << 4);
2656 }
2657
2658 static int
scan_type(const struct ieee80211_scan_state * ss,const struct ieee80211_channel * chan)2659 scan_type(const struct ieee80211_scan_state *ss,
2660 const struct ieee80211_channel *chan)
2661 {
2662 /* We can only set one essid for a directed scan */
2663 if (ss->ss_nssid != 0)
2664 return IWI_SCAN_TYPE_BDIRECTED;
2665 if ((ss->ss_flags & IEEE80211_SCAN_ACTIVE) &&
2666 (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0)
2667 return IWI_SCAN_TYPE_BROADCAST;
2668 return IWI_SCAN_TYPE_PASSIVE;
2669 }
2670
2671 static __inline int
scan_band(const struct ieee80211_channel * c)2672 scan_band(const struct ieee80211_channel *c)
2673 {
2674 return IEEE80211_IS_CHAN_5GHZ(c) ? IWI_CHAN_5GHZ : IWI_CHAN_2GHZ;
2675 }
2676
2677 static void
iwi_monitor_scan(void * arg,int npending)2678 iwi_monitor_scan(void *arg, int npending)
2679 {
2680 struct iwi_softc *sc = arg;
2681 IWI_LOCK_DECL;
2682
2683 IWI_LOCK(sc);
2684 (void) iwi_scanchan(sc, 2000, 0);
2685 IWI_UNLOCK(sc);
2686 }
2687
2688 /*
2689 * Start a scan on the current channel or all channels.
2690 */
2691 static int
iwi_scanchan(struct iwi_softc * sc,unsigned long maxdwell,int allchan)2692 iwi_scanchan(struct iwi_softc *sc, unsigned long maxdwell, int allchan)
2693 {
2694 struct ieee80211com *ic = &sc->sc_ic;
2695 struct ieee80211_channel *chan;
2696 struct ieee80211_scan_state *ss;
2697 struct iwi_scan_ext scan;
2698 int error = 0;
2699
2700 IWI_LOCK_ASSERT(sc);
2701 if (sc->fw_state == IWI_FW_SCANNING) {
2702 /*
2703 * This should not happen as we only trigger scan_next after
2704 * completion
2705 */
2706 DPRINTF(("%s: called too early - still scanning\n", __func__));
2707 return (EBUSY);
2708 }
2709 IWI_STATE_BEGIN(sc, IWI_FW_SCANNING);
2710
2711 ss = ic->ic_scan;
2712
2713 memset(&scan, 0, sizeof scan);
2714 scan.full_scan_index = htole32(++sc->sc_scangen);
2715 scan.dwell_time[IWI_SCAN_TYPE_PASSIVE] = htole16(maxdwell);
2716 if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) {
2717 /*
2718 * Use very short dwell times for when we send probe request
2719 * frames. Without this bg scans hang. Ideally this should
2720 * be handled with early-termination as done by net80211 but
2721 * that's not feasible (aborting a scan is problematic).
2722 */
2723 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(30);
2724 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(30);
2725 } else {
2726 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(maxdwell);
2727 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(maxdwell);
2728 }
2729
2730 /* We can only set one essid for a directed scan */
2731 if (ss->ss_nssid != 0) {
2732 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ss->ss_ssid[0].ssid,
2733 ss->ss_ssid[0].len);
2734 if (error)
2735 return (error);
2736 }
2737
2738 if (allchan) {
2739 int i, next, band, b, bstart;
2740 /*
2741 * Convert scan list to run-length encoded channel list
2742 * the firmware requires (preserving the order setup by
2743 * net80211). The first entry in each run specifies the
2744 * band and the count of items in the run.
2745 */
2746 next = 0; /* next open slot */
2747 bstart = 0; /* NB: not needed, silence compiler */
2748 band = -1; /* NB: impossible value */
2749 KASSERT(ss->ss_last > 0, ("no channels"));
2750 for (i = 0; i < ss->ss_last; i++) {
2751 chan = ss->ss_chans[i];
2752 b = scan_band(chan);
2753 if (b != band) {
2754 if (band != -1)
2755 scan.channels[bstart] =
2756 (next - bstart) | band;
2757 /* NB: this allocates a slot for the run-len */
2758 band = b, bstart = next++;
2759 }
2760 if (next >= IWI_SCAN_CHANNELS) {
2761 DPRINTF(("truncating scan list\n"));
2762 break;
2763 }
2764 scan.channels[next] = ieee80211_chan2ieee(ic, chan);
2765 set_scan_type(&scan, next, scan_type(ss, chan));
2766 next++;
2767 }
2768 scan.channels[bstart] = (next - bstart) | band;
2769 } else {
2770 /* Scan the current channel only */
2771 chan = ic->ic_curchan;
2772 scan.channels[0] = 1 | scan_band(chan);
2773 scan.channels[1] = ieee80211_chan2ieee(ic, chan);
2774 set_scan_type(&scan, 1, scan_type(ss, chan));
2775 }
2776 #ifdef IWI_DEBUG
2777 if (iwi_debug > 0) {
2778 static const char *scantype[8] =
2779 { "PSTOP", "PASV", "DIR", "BCAST", "BDIR", "5", "6", "7" };
2780 int i;
2781 printf("Scan request: index %u dwell %d/%d/%d\n"
2782 , le32toh(scan.full_scan_index)
2783 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_PASSIVE])
2784 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BROADCAST])
2785 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED])
2786 );
2787 i = 0;
2788 do {
2789 int run = scan.channels[i];
2790 if (run == 0)
2791 break;
2792 printf("Scan %d %s channels:", run & 0x3f,
2793 run & IWI_CHAN_2GHZ ? "2.4GHz" : "5GHz");
2794 for (run &= 0x3f, i++; run > 0; run--, i++) {
2795 uint8_t type = scan.scan_type[i/2];
2796 printf(" %u/%s", scan.channels[i],
2797 scantype[(i & 1 ? type : type>>4) & 7]);
2798 }
2799 printf("\n");
2800 } while (i < IWI_SCAN_CHANNELS);
2801 }
2802 #endif
2803
2804 return (iwi_cmd(sc, IWI_CMD_SCAN_EXT, &scan, sizeof scan));
2805 }
2806
2807 static int
iwi_set_sensitivity(struct iwi_softc * sc,int8_t rssi_dbm)2808 iwi_set_sensitivity(struct iwi_softc *sc, int8_t rssi_dbm)
2809 {
2810 struct iwi_sensitivity sens;
2811
2812 DPRINTF(("Setting sensitivity to %d\n", rssi_dbm));
2813
2814 memset(&sens, 0, sizeof sens);
2815 sens.rssi = htole16(rssi_dbm);
2816 return iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &sens, sizeof sens);
2817 }
2818
2819 static int
iwi_auth_and_assoc(struct iwi_softc * sc,struct ieee80211vap * vap)2820 iwi_auth_and_assoc(struct iwi_softc *sc, struct ieee80211vap *vap)
2821 {
2822 struct ieee80211com *ic = vap->iv_ic;
2823 if_t ifp = vap->iv_ifp;
2824 struct ieee80211_node *ni;
2825 struct iwi_configuration config;
2826 struct iwi_associate *assoc = &sc->assoc;
2827 uint16_t capinfo;
2828 uint32_t data;
2829 int error, mode;
2830
2831 IWI_LOCK_ASSERT(sc);
2832
2833 if (sc->flags & IWI_FLAG_ASSOCIATED) {
2834 DPRINTF(("Already associated\n"));
2835 return (-1);
2836 }
2837
2838 ni = ieee80211_ref_node(vap->iv_bss);
2839
2840 IWI_STATE_BEGIN(sc, IWI_FW_ASSOCIATING);
2841 error = 0;
2842 mode = 0;
2843
2844 if (IEEE80211_IS_CHAN_A(ic->ic_curchan))
2845 mode = IWI_MODE_11A;
2846 else if (IEEE80211_IS_CHAN_G(ic->ic_curchan))
2847 mode = IWI_MODE_11G;
2848 if (IEEE80211_IS_CHAN_B(ic->ic_curchan))
2849 mode = IWI_MODE_11B;
2850
2851 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2852 memset(&config, 0, sizeof config);
2853 config.bluetooth_coexistence = sc->bluetooth;
2854 config.antenna = sc->antenna;
2855 config.multicast_enabled = 1;
2856 if (mode == IWI_MODE_11G)
2857 config.use_protection = 1;
2858 config.answer_pbreq =
2859 (vap->iv_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2860 config.disable_unicast_decryption = 1;
2861 config.disable_multicast_decryption = 1;
2862 DPRINTF(("Configuring adapter\n"));
2863 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2864 if (error != 0)
2865 goto done;
2866 }
2867
2868 #ifdef IWI_DEBUG
2869 if (iwi_debug > 0) {
2870 printf("Setting ESSID to ");
2871 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
2872 printf("\n");
2873 }
2874 #endif
2875 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen);
2876 if (error != 0)
2877 goto done;
2878
2879 error = iwi_setpowermode(sc, vap);
2880 if (error != 0)
2881 goto done;
2882
2883 data = htole32(vap->iv_rtsthreshold);
2884 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2885 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2886 if (error != 0)
2887 goto done;
2888
2889 data = htole32(vap->iv_fragthreshold);
2890 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data)));
2891 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2892 if (error != 0)
2893 goto done;
2894
2895 /* the rate set has already been "negotiated" */
2896 error = iwi_set_rateset(sc, &ni->ni_rates, mode,
2897 IWI_RATESET_TYPE_NEGOTIATED);
2898 if (error != 0)
2899 goto done;
2900
2901 memset(assoc, 0, sizeof *assoc);
2902
2903 if ((vap->iv_flags & IEEE80211_F_WME) && ni->ni_ies.wme_ie != NULL) {
2904 /* NB: don't treat WME setup as failure */
2905 if (iwi_wme_setparams(sc) == 0 && iwi_wme_setie(sc) == 0)
2906 assoc->policy |= htole16(IWI_POLICY_WME);
2907 /* XXX complain on failure? */
2908 }
2909
2910 if (vap->iv_appie_wpa != NULL) {
2911 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2912
2913 DPRINTF(("Setting optional IE (len=%u)\n", ie->ie_len));
2914 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ie->ie_data, ie->ie_len);
2915 if (error != 0)
2916 goto done;
2917 }
2918
2919 error = iwi_set_sensitivity(sc, ic->ic_node_getrssi(ni));
2920 if (error != 0)
2921 goto done;
2922
2923 assoc->mode = mode;
2924 assoc->chan = ic->ic_curchan->ic_ieee;
2925 /*
2926 * NB: do not arrange for shared key auth w/o privacy
2927 * (i.e. a wep key); it causes a firmware error.
2928 */
2929 if ((vap->iv_flags & IEEE80211_F_PRIVACY) &&
2930 ni->ni_authmode == IEEE80211_AUTH_SHARED) {
2931 assoc->auth = IWI_AUTH_SHARED;
2932 /*
2933 * It's possible to have privacy marked but no default
2934 * key setup. This typically is due to a user app bug
2935 * but if we blindly grab the key the firmware will
2936 * barf so avoid it for now.
2937 */
2938 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE)
2939 assoc->auth |= vap->iv_def_txkey << 4;
2940
2941 error = iwi_setwepkeys(sc, vap);
2942 if (error != 0)
2943 goto done;
2944 }
2945 if (vap->iv_flags & IEEE80211_F_WPA)
2946 assoc->policy |= htole16(IWI_POLICY_WPA);
2947 if (vap->iv_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0)
2948 assoc->type = IWI_HC_IBSS_START;
2949 else
2950 assoc->type = IWI_HC_ASSOC;
2951 memcpy(assoc->tstamp, ni->ni_tstamp.data, 8);
2952
2953 if (vap->iv_opmode == IEEE80211_M_IBSS)
2954 capinfo = IEEE80211_CAPINFO_IBSS;
2955 else
2956 capinfo = IEEE80211_CAPINFO_ESS;
2957 if (vap->iv_flags & IEEE80211_F_PRIVACY)
2958 capinfo |= IEEE80211_CAPINFO_PRIVACY;
2959 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
2960 IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
2961 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
2962 if (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)
2963 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
2964 assoc->capinfo = htole16(capinfo);
2965
2966 assoc->lintval = htole16(ic->ic_lintval);
2967 assoc->intval = htole16(ni->ni_intval);
2968 IEEE80211_ADDR_COPY(assoc->bssid, ni->ni_bssid);
2969 if (vap->iv_opmode == IEEE80211_M_IBSS)
2970 IEEE80211_ADDR_COPY(assoc->dst, if_getbroadcastaddr(ifp));
2971 else
2972 IEEE80211_ADDR_COPY(assoc->dst, ni->ni_bssid);
2973
2974 DPRINTF(("%s bssid %6D dst %6D channel %u policy 0x%x "
2975 "auth %u capinfo 0x%x lintval %u bintval %u\n",
2976 assoc->type == IWI_HC_IBSS_START ? "Start" : "Join",
2977 assoc->bssid, ":", assoc->dst, ":",
2978 assoc->chan, le16toh(assoc->policy), assoc->auth,
2979 le16toh(assoc->capinfo), le16toh(assoc->lintval),
2980 le16toh(assoc->intval)));
2981 error = iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
2982 done:
2983 ieee80211_free_node(ni);
2984 if (error)
2985 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
2986
2987 return (error);
2988 }
2989
2990 static void
iwi_disassoc(void * arg,int pending)2991 iwi_disassoc(void *arg, int pending)
2992 {
2993 struct iwi_softc *sc = arg;
2994 IWI_LOCK_DECL;
2995
2996 IWI_LOCK(sc);
2997 iwi_disassociate(sc, 0);
2998 IWI_UNLOCK(sc);
2999 }
3000
3001 static int
iwi_disassociate(struct iwi_softc * sc,int quiet)3002 iwi_disassociate(struct iwi_softc *sc, int quiet)
3003 {
3004 struct iwi_associate *assoc = &sc->assoc;
3005
3006 if ((sc->flags & IWI_FLAG_ASSOCIATED) == 0) {
3007 DPRINTF(("Not associated\n"));
3008 return (-1);
3009 }
3010
3011 IWI_STATE_BEGIN(sc, IWI_FW_DISASSOCIATING);
3012
3013 if (quiet)
3014 assoc->type = IWI_HC_DISASSOC_QUIET;
3015 else
3016 assoc->type = IWI_HC_DISASSOC;
3017
3018 DPRINTF(("Trying to disassociate from %6D channel %u\n",
3019 assoc->bssid, ":", assoc->chan));
3020 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
3021 }
3022
3023 /*
3024 * release dma resources for the firmware
3025 */
3026 static void
iwi_release_fw_dma(struct iwi_softc * sc)3027 iwi_release_fw_dma(struct iwi_softc *sc)
3028 {
3029 if (sc->fw_flags & IWI_FW_HAVE_PHY)
3030 bus_dmamap_unload(sc->fw_dmat, sc->fw_map);
3031 if (sc->fw_flags & IWI_FW_HAVE_MAP)
3032 bus_dmamem_free(sc->fw_dmat, sc->fw_virtaddr, sc->fw_map);
3033 if (sc->fw_flags & IWI_FW_HAVE_DMAT)
3034 bus_dma_tag_destroy(sc->fw_dmat);
3035
3036 sc->fw_flags = 0;
3037 sc->fw_dma_size = 0;
3038 sc->fw_dmat = NULL;
3039 sc->fw_map = NULL;
3040 sc->fw_physaddr = 0;
3041 sc->fw_virtaddr = NULL;
3042 }
3043
3044 /*
3045 * allocate the dma descriptor for the firmware.
3046 * Return 0 on success, 1 on error.
3047 * Must be called unlocked, protected by IWI_FLAG_FW_LOADING.
3048 */
3049 static int
iwi_init_fw_dma(struct iwi_softc * sc,int size)3050 iwi_init_fw_dma(struct iwi_softc *sc, int size)
3051 {
3052 if (sc->fw_dma_size >= size)
3053 return 0;
3054 if (bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
3055 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
3056 size, 1, size, 0, NULL, NULL, &sc->fw_dmat) != 0) {
3057 device_printf(sc->sc_dev,
3058 "could not create firmware DMA tag\n");
3059 goto error;
3060 }
3061 sc->fw_flags |= IWI_FW_HAVE_DMAT;
3062 if (bus_dmamem_alloc(sc->fw_dmat, &sc->fw_virtaddr, 0,
3063 &sc->fw_map) != 0) {
3064 device_printf(sc->sc_dev,
3065 "could not allocate firmware DMA memory\n");
3066 goto error;
3067 }
3068 sc->fw_flags |= IWI_FW_HAVE_MAP;
3069 if (bus_dmamap_load(sc->fw_dmat, sc->fw_map, sc->fw_virtaddr,
3070 size, iwi_dma_map_addr, &sc->fw_physaddr, 0) != 0) {
3071 device_printf(sc->sc_dev, "could not load firmware DMA map\n");
3072 goto error;
3073 }
3074 sc->fw_flags |= IWI_FW_HAVE_PHY;
3075 sc->fw_dma_size = size;
3076 return 0;
3077
3078 error:
3079 iwi_release_fw_dma(sc);
3080 return 1;
3081 }
3082
3083 static void
iwi_init_locked(struct iwi_softc * sc)3084 iwi_init_locked(struct iwi_softc *sc)
3085 {
3086 struct iwi_rx_data *data;
3087 int i;
3088
3089 IWI_LOCK_ASSERT(sc);
3090
3091 if (sc->fw_state == IWI_FW_LOADING) {
3092 device_printf(sc->sc_dev, "%s: already loading\n", __func__);
3093 return; /* XXX: condvar? */
3094 }
3095
3096 iwi_stop_locked(sc);
3097
3098 IWI_STATE_BEGIN(sc, IWI_FW_LOADING);
3099
3100 if (iwi_reset(sc) != 0) {
3101 device_printf(sc->sc_dev, "could not reset adapter\n");
3102 goto fail;
3103 }
3104 if (iwi_load_firmware(sc, &sc->fw_boot) != 0) {
3105 device_printf(sc->sc_dev,
3106 "could not load boot firmware %s\n", sc->fw_boot.name);
3107 goto fail;
3108 }
3109 if (iwi_load_ucode(sc, &sc->fw_uc) != 0) {
3110 device_printf(sc->sc_dev,
3111 "could not load microcode %s\n", sc->fw_uc.name);
3112 goto fail;
3113 }
3114
3115 iwi_stop_master(sc);
3116
3117 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.physaddr);
3118 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count);
3119 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
3120
3121 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].physaddr);
3122 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count);
3123 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur);
3124
3125 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].physaddr);
3126 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count);
3127 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur);
3128
3129 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].physaddr);
3130 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count);
3131 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur);
3132
3133 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].physaddr);
3134 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count);
3135 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur);
3136
3137 for (i = 0; i < sc->rxq.count; i++) {
3138 data = &sc->rxq.data[i];
3139 CSR_WRITE_4(sc, data->reg, data->physaddr);
3140 }
3141
3142 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count - 1);
3143
3144 if (iwi_load_firmware(sc, &sc->fw_fw) != 0) {
3145 device_printf(sc->sc_dev,
3146 "could not load main firmware %s\n", sc->fw_fw.name);
3147 goto fail;
3148 }
3149 sc->flags |= IWI_FLAG_FW_INITED;
3150
3151 IWI_STATE_END(sc, IWI_FW_LOADING);
3152
3153 if (iwi_config(sc) != 0) {
3154 device_printf(sc->sc_dev, "unable to enable adapter\n");
3155 goto fail2;
3156 }
3157
3158 callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
3159 sc->sc_running = 1;
3160 return;
3161 fail:
3162 IWI_STATE_END(sc, IWI_FW_LOADING);
3163 fail2:
3164 iwi_stop_locked(sc);
3165 }
3166
3167 static void
iwi_init(void * priv)3168 iwi_init(void *priv)
3169 {
3170 struct iwi_softc *sc = priv;
3171 struct ieee80211com *ic = &sc->sc_ic;
3172 IWI_LOCK_DECL;
3173
3174 IWI_LOCK(sc);
3175 iwi_init_locked(sc);
3176 IWI_UNLOCK(sc);
3177
3178 if (sc->sc_running)
3179 ieee80211_start_all(ic);
3180 }
3181
3182 static void
iwi_stop_locked(void * priv)3183 iwi_stop_locked(void *priv)
3184 {
3185 struct iwi_softc *sc = priv;
3186
3187 IWI_LOCK_ASSERT(sc);
3188
3189 sc->sc_running = 0;
3190
3191 if (sc->sc_softled) {
3192 callout_stop(&sc->sc_ledtimer);
3193 sc->sc_blinking = 0;
3194 }
3195 callout_stop(&sc->sc_wdtimer);
3196 callout_stop(&sc->sc_rftimer);
3197
3198 iwi_stop_master(sc);
3199
3200 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SOFT_RESET);
3201
3202 /* reset rings */
3203 iwi_reset_cmd_ring(sc, &sc->cmdq);
3204 iwi_reset_tx_ring(sc, &sc->txq[0]);
3205 iwi_reset_tx_ring(sc, &sc->txq[1]);
3206 iwi_reset_tx_ring(sc, &sc->txq[2]);
3207 iwi_reset_tx_ring(sc, &sc->txq[3]);
3208 iwi_reset_rx_ring(sc, &sc->rxq);
3209
3210 sc->sc_tx_timer = 0;
3211 sc->sc_state_timer = 0;
3212 sc->sc_busy_timer = 0;
3213 sc->flags &= ~(IWI_FLAG_BUSY | IWI_FLAG_ASSOCIATED);
3214 sc->fw_state = IWI_FW_IDLE;
3215 wakeup(sc);
3216 }
3217
3218 static void
iwi_stop(struct iwi_softc * sc)3219 iwi_stop(struct iwi_softc *sc)
3220 {
3221 IWI_LOCK_DECL;
3222
3223 IWI_LOCK(sc);
3224 iwi_stop_locked(sc);
3225 IWI_UNLOCK(sc);
3226 }
3227
3228 static void
iwi_restart(void * arg,int npending)3229 iwi_restart(void *arg, int npending)
3230 {
3231 struct iwi_softc *sc = arg;
3232
3233 iwi_init(sc);
3234 }
3235
3236 /*
3237 * Return whether or not the radio is enabled in hardware
3238 * (i.e. the rfkill switch is "off").
3239 */
3240 static int
iwi_getrfkill(struct iwi_softc * sc)3241 iwi_getrfkill(struct iwi_softc *sc)
3242 {
3243 return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0;
3244 }
3245
3246 static void
iwi_radio_on(void * arg,int pending)3247 iwi_radio_on(void *arg, int pending)
3248 {
3249 struct iwi_softc *sc = arg;
3250 struct ieee80211com *ic = &sc->sc_ic;
3251
3252 device_printf(sc->sc_dev, "radio turned on\n");
3253
3254 iwi_init(sc);
3255 ieee80211_notify_radio(ic, 1);
3256 }
3257
3258 static void
iwi_rfkill_poll(void * arg)3259 iwi_rfkill_poll(void *arg)
3260 {
3261 struct iwi_softc *sc = arg;
3262
3263 IWI_LOCK_ASSERT(sc);
3264
3265 /*
3266 * Check for a change in rfkill state. We get an
3267 * interrupt when a radio is disabled but not when
3268 * it is enabled so we must poll for the latter.
3269 */
3270 if (!iwi_getrfkill(sc)) {
3271 ieee80211_runtask(&sc->sc_ic, &sc->sc_radiontask);
3272 return;
3273 }
3274 callout_reset(&sc->sc_rftimer, 2*hz, iwi_rfkill_poll, sc);
3275 }
3276
3277 static void
iwi_radio_off(void * arg,int pending)3278 iwi_radio_off(void *arg, int pending)
3279 {
3280 struct iwi_softc *sc = arg;
3281 struct ieee80211com *ic = &sc->sc_ic;
3282 IWI_LOCK_DECL;
3283
3284 device_printf(sc->sc_dev, "radio turned off\n");
3285
3286 ieee80211_notify_radio(ic, 0);
3287
3288 IWI_LOCK(sc);
3289 iwi_stop_locked(sc);
3290 iwi_rfkill_poll(sc);
3291 IWI_UNLOCK(sc);
3292 }
3293
3294 static int
iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)3295 iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)
3296 {
3297 struct iwi_softc *sc = arg1;
3298 uint32_t size, buf[128];
3299
3300 memset(buf, 0, sizeof buf);
3301
3302 if (!(sc->flags & IWI_FLAG_FW_INITED))
3303 return SYSCTL_OUT(req, buf, sizeof buf);
3304
3305 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1);
3306 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size);
3307
3308 return SYSCTL_OUT(req, buf, size);
3309 }
3310
3311 static int
iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)3312 iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)
3313 {
3314 struct iwi_softc *sc = arg1;
3315 int val = !iwi_getrfkill(sc);
3316
3317 return SYSCTL_OUT(req, &val, sizeof val);
3318 }
3319
3320 /*
3321 * Add sysctl knobs.
3322 */
3323 static void
iwi_sysctlattach(struct iwi_softc * sc)3324 iwi_sysctlattach(struct iwi_softc *sc)
3325 {
3326 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3327 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3328
3329 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "radio",
3330 CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, 0,
3331 iwi_sysctl_radio, "I",
3332 "radio transmitter switch state (0=off, 1=on)");
3333
3334 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "stats",
3335 CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, 0,
3336 iwi_sysctl_stats, "S", "statistics");
3337
3338 sc->bluetooth = 0;
3339 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "bluetooth",
3340 CTLFLAG_RW, &sc->bluetooth, 0, "bluetooth coexistence");
3341
3342 sc->antenna = IWI_ANTENNA_AUTO;
3343 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "antenna",
3344 CTLFLAG_RW, &sc->antenna, 0, "antenna (0=auto)");
3345 }
3346
3347 /*
3348 * LED support.
3349 *
3350 * Different cards have different capabilities. Some have three
3351 * led's while others have only one. The linux ipw driver defines
3352 * led's for link state (associated or not), band (11a, 11g, 11b),
3353 * and for link activity. We use one led and vary the blink rate
3354 * according to the tx/rx traffic a la the ath driver.
3355 */
3356
3357 static __inline uint32_t
iwi_toggle_event(uint32_t r)3358 iwi_toggle_event(uint32_t r)
3359 {
3360 return r &~ (IWI_RST_STANDBY | IWI_RST_GATE_ODMA |
3361 IWI_RST_GATE_IDMA | IWI_RST_GATE_ADMA);
3362 }
3363
3364 static uint32_t
iwi_read_event(struct iwi_softc * sc)3365 iwi_read_event(struct iwi_softc *sc)
3366 {
3367 return MEM_READ_4(sc, IWI_MEM_EEPROM_EVENT);
3368 }
3369
3370 static void
iwi_write_event(struct iwi_softc * sc,uint32_t v)3371 iwi_write_event(struct iwi_softc *sc, uint32_t v)
3372 {
3373 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, v);
3374 }
3375
3376 static void
iwi_led_done(void * arg)3377 iwi_led_done(void *arg)
3378 {
3379 struct iwi_softc *sc = arg;
3380
3381 sc->sc_blinking = 0;
3382 }
3383
3384 /*
3385 * Turn the activity LED off: flip the pin and then set a timer so no
3386 * update will happen for the specified duration.
3387 */
3388 static void
iwi_led_off(void * arg)3389 iwi_led_off(void *arg)
3390 {
3391 struct iwi_softc *sc = arg;
3392 uint32_t v;
3393
3394 v = iwi_read_event(sc);
3395 v &= ~sc->sc_ledpin;
3396 iwi_write_event(sc, iwi_toggle_event(v));
3397 callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, iwi_led_done, sc);
3398 }
3399
3400 /*
3401 * Blink the LED according to the specified on/off times.
3402 */
3403 static void
iwi_led_blink(struct iwi_softc * sc,int on,int off)3404 iwi_led_blink(struct iwi_softc *sc, int on, int off)
3405 {
3406 uint32_t v;
3407
3408 v = iwi_read_event(sc);
3409 v |= sc->sc_ledpin;
3410 iwi_write_event(sc, iwi_toggle_event(v));
3411 sc->sc_blinking = 1;
3412 sc->sc_ledoff = off;
3413 callout_reset(&sc->sc_ledtimer, on, iwi_led_off, sc);
3414 }
3415
3416 static void
iwi_led_event(struct iwi_softc * sc,int event)3417 iwi_led_event(struct iwi_softc *sc, int event)
3418 {
3419 /* NB: on/off times from the Atheros NDIS driver, w/ permission */
3420 static const struct {
3421 u_int rate; /* tx/rx iwi rate */
3422 u_int16_t timeOn; /* LED on time (ms) */
3423 u_int16_t timeOff; /* LED off time (ms) */
3424 } blinkrates[] = {
3425 { IWI_RATE_OFDM54, 40, 10 },
3426 { IWI_RATE_OFDM48, 44, 11 },
3427 { IWI_RATE_OFDM36, 50, 13 },
3428 { IWI_RATE_OFDM24, 57, 14 },
3429 { IWI_RATE_OFDM18, 67, 16 },
3430 { IWI_RATE_OFDM12, 80, 20 },
3431 { IWI_RATE_DS11, 100, 25 },
3432 { IWI_RATE_OFDM9, 133, 34 },
3433 { IWI_RATE_OFDM6, 160, 40 },
3434 { IWI_RATE_DS5, 200, 50 },
3435 { 6, 240, 58 }, /* XXX 3Mb/s if it existed */
3436 { IWI_RATE_DS2, 267, 66 },
3437 { IWI_RATE_DS1, 400, 100 },
3438 { 0, 500, 130 }, /* unknown rate/polling */
3439 };
3440 uint32_t txrate;
3441 int j = 0; /* XXX silence compiler */
3442
3443 sc->sc_ledevent = ticks; /* time of last event */
3444 if (sc->sc_blinking) /* don't interrupt active blink */
3445 return;
3446 switch (event) {
3447 case IWI_LED_POLL:
3448 j = nitems(blinkrates)-1;
3449 break;
3450 case IWI_LED_TX:
3451 /* read current transmission rate from adapter */
3452 txrate = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE);
3453 if (blinkrates[sc->sc_txrix].rate != txrate) {
3454 for (j = 0; j < nitems(blinkrates)-1; j++)
3455 if (blinkrates[j].rate == txrate)
3456 break;
3457 sc->sc_txrix = j;
3458 } else
3459 j = sc->sc_txrix;
3460 break;
3461 case IWI_LED_RX:
3462 if (blinkrates[sc->sc_rxrix].rate != sc->sc_rxrate) {
3463 for (j = 0; j < nitems(blinkrates)-1; j++)
3464 if (blinkrates[j].rate == sc->sc_rxrate)
3465 break;
3466 sc->sc_rxrix = j;
3467 } else
3468 j = sc->sc_rxrix;
3469 break;
3470 }
3471 /* XXX beware of overflow */
3472 iwi_led_blink(sc, (blinkrates[j].timeOn * hz) / 1000,
3473 (blinkrates[j].timeOff * hz) / 1000);
3474 }
3475
3476 static int
iwi_sysctl_softled(SYSCTL_HANDLER_ARGS)3477 iwi_sysctl_softled(SYSCTL_HANDLER_ARGS)
3478 {
3479 struct iwi_softc *sc = arg1;
3480 int softled = sc->sc_softled;
3481 int error;
3482
3483 error = sysctl_handle_int(oidp, &softled, 0, req);
3484 if (error || !req->newptr)
3485 return error;
3486 softled = (softled != 0);
3487 if (softled != sc->sc_softled) {
3488 if (softled) {
3489 uint32_t v = iwi_read_event(sc);
3490 v &= ~sc->sc_ledpin;
3491 iwi_write_event(sc, iwi_toggle_event(v));
3492 }
3493 sc->sc_softled = softled;
3494 }
3495 return 0;
3496 }
3497
3498 static void
iwi_ledattach(struct iwi_softc * sc)3499 iwi_ledattach(struct iwi_softc *sc)
3500 {
3501 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3502 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3503
3504 sc->sc_blinking = 0;
3505 sc->sc_ledstate = 1;
3506 sc->sc_ledidle = (2700*hz)/1000; /* 2.7sec */
3507 callout_init_mtx(&sc->sc_ledtimer, &sc->sc_mtx, 0);
3508
3509 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3510 "softled", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
3511 iwi_sysctl_softled, "I", "enable/disable software LED support");
3512 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3513 "ledpin", CTLFLAG_RW, &sc->sc_ledpin, 0,
3514 "pin setting to turn activity LED on");
3515 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3516 "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0,
3517 "idle time for inactivity LED (ticks)");
3518 /* XXX for debugging */
3519 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3520 "nictype", CTLFLAG_RD, &sc->sc_nictype, 0,
3521 "NIC type from EEPROM");
3522
3523 sc->sc_ledpin = IWI_RST_LED_ACTIVITY;
3524 sc->sc_softled = 1;
3525
3526 sc->sc_nictype = (iwi_read_prom_word(sc, IWI_EEPROM_NIC) >> 8) & 0xff;
3527 if (sc->sc_nictype == 1) {
3528 /*
3529 * NB: led's are reversed.
3530 */
3531 sc->sc_ledpin = IWI_RST_LED_ASSOCIATED;
3532 }
3533 }
3534
3535 static void
iwi_scan_start(struct ieee80211com * ic)3536 iwi_scan_start(struct ieee80211com *ic)
3537 {
3538 /* ignore */
3539 }
3540
3541 static void
iwi_set_channel(struct ieee80211com * ic)3542 iwi_set_channel(struct ieee80211com *ic)
3543 {
3544 struct iwi_softc *sc = ic->ic_softc;
3545
3546 if (sc->fw_state == IWI_FW_IDLE)
3547 iwi_setcurchan(sc, ic->ic_curchan->ic_ieee);
3548 }
3549
3550 static void
iwi_scan_curchan(struct ieee80211_scan_state * ss,unsigned long maxdwell)3551 iwi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
3552 {
3553 struct ieee80211vap *vap = ss->ss_vap;
3554 struct iwi_softc *sc = vap->iv_ic->ic_softc;
3555 IWI_LOCK_DECL;
3556
3557 IWI_LOCK(sc);
3558 if (iwi_scanchan(sc, maxdwell, 0))
3559 ieee80211_cancel_scan(vap);
3560 IWI_UNLOCK(sc);
3561 }
3562
3563 static void
iwi_scan_mindwell(struct ieee80211_scan_state * ss)3564 iwi_scan_mindwell(struct ieee80211_scan_state *ss)
3565 {
3566 /* NB: don't try to abort scan; wait for firmware to finish */
3567 }
3568
3569 static void
iwi_scan_end(struct ieee80211com * ic)3570 iwi_scan_end(struct ieee80211com *ic)
3571 {
3572 struct iwi_softc *sc = ic->ic_softc;
3573 IWI_LOCK_DECL;
3574
3575 IWI_LOCK(sc);
3576 sc->flags &= ~IWI_FLAG_CHANNEL_SCAN;
3577 /* NB: make sure we're still scanning */
3578 if (sc->fw_state == IWI_FW_SCANNING)
3579 iwi_cmd(sc, IWI_CMD_ABORT_SCAN, NULL, 0);
3580 IWI_UNLOCK(sc);
3581 }
3582
3583 static void
iwi_collect_bands(struct ieee80211com * ic,uint8_t bands[],size_t bands_sz)3584 iwi_collect_bands(struct ieee80211com *ic, uint8_t bands[], size_t bands_sz)
3585 {
3586 struct iwi_softc *sc = ic->ic_softc;
3587 device_t dev = sc->sc_dev;
3588
3589 memset(bands, 0, bands_sz);
3590 setbit(bands, IEEE80211_MODE_11B);
3591 setbit(bands, IEEE80211_MODE_11G);
3592 if (pci_get_device(dev) >= 0x4223)
3593 setbit(bands, IEEE80211_MODE_11A);
3594 }
3595
3596 static void
iwi_getradiocaps(struct ieee80211com * ic,int maxchans,int * nchans,struct ieee80211_channel chans[])3597 iwi_getradiocaps(struct ieee80211com *ic,
3598 int maxchans, int *nchans, struct ieee80211_channel chans[])
3599 {
3600 uint8_t bands[IEEE80211_MODE_BYTES];
3601
3602 iwi_collect_bands(ic, bands, sizeof(bands));
3603 *nchans = 0;
3604 if (isset(bands, IEEE80211_MODE_11B) || isset(bands, IEEE80211_MODE_11G))
3605 ieee80211_add_channels_default_2ghz(chans, maxchans, nchans,
3606 bands, 0);
3607 if (isset(bands, IEEE80211_MODE_11A)) {
3608 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans,
3609 def_chan_5ghz_band1, nitems(def_chan_5ghz_band1),
3610 bands, 0);
3611 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans,
3612 def_chan_5ghz_band2, nitems(def_chan_5ghz_band2),
3613 bands, 0);
3614 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans,
3615 def_chan_5ghz_band3, nitems(def_chan_5ghz_band3),
3616 bands, 0);
3617 }
3618 }
3619