1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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 __FBSDID("$FreeBSD: stable/12/sys/dev/iwi/if_iwi.c 347511 2019-05-12 12:30:45Z avos $");
34
35 /*-
36 * Intel(R) PRO/Wireless 2200BG/2225BG/2915ABG driver
37 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
38 */
39
40 #include <sys/param.h>
41 #include <sys/sysctl.h>
42 #include <sys/sockio.h>
43 #include <sys/mbuf.h>
44 #include <sys/kernel.h>
45 #include <sys/socket.h>
46 #include <sys/systm.h>
47 #include <sys/malloc.h>
48 #include <sys/lock.h>
49 #include <sys/mutex.h>
50 #include <sys/module.h>
51 #include <sys/bus.h>
52 #include <sys/endian.h>
53 #include <sys/proc.h>
54 #include <sys/mount.h>
55 #include <sys/namei.h>
56 #include <sys/linker.h>
57 #include <sys/firmware.h>
58 #include <sys/taskqueue.h>
59
60 #include <machine/bus.h>
61 #include <machine/resource.h>
62 #include <sys/rman.h>
63
64 #include <dev/pci/pcireg.h>
65 #include <dev/pci/pcivar.h>
66
67 #include <net/bpf.h>
68 #include <net/if.h>
69 #include <net/if_var.h>
70 #include <net/if_arp.h>
71 #include <net/ethernet.h>
72 #include <net/if_dl.h>
73 #include <net/if_media.h>
74 #include <net/if_types.h>
75
76 #include <net80211/ieee80211_var.h>
77 #include <net80211/ieee80211_radiotap.h>
78 #include <net80211/ieee80211_input.h>
79 #include <net80211/ieee80211_regdomain.h>
80
81 #include <netinet/in.h>
82 #include <netinet/in_systm.h>
83 #include <netinet/in_var.h>
84 #include <netinet/ip.h>
85 #include <netinet/if_ether.h>
86
87 #include <dev/iwi/if_iwireg.h>
88 #include <dev/iwi/if_iwivar.h>
89 #include <dev/iwi/if_iwi_ioctl.h>
90
91 #define IWI_DEBUG
92 #ifdef IWI_DEBUG
93 #define DPRINTF(x) do { if (iwi_debug > 0) printf x; } while (0)
94 #define DPRINTFN(n, x) do { if (iwi_debug >= (n)) printf x; } while (0)
95 int iwi_debug = 0;
96 SYSCTL_INT(_debug, OID_AUTO, iwi, CTLFLAG_RW, &iwi_debug, 0, "iwi debug level");
97
98 static const char *iwi_fw_states[] = {
99 "IDLE", /* IWI_FW_IDLE */
100 "LOADING", /* IWI_FW_LOADING */
101 "ASSOCIATING", /* IWI_FW_ASSOCIATING */
102 "DISASSOCIATING", /* IWI_FW_DISASSOCIATING */
103 "SCANNING", /* IWI_FW_SCANNING */
104 };
105 #else
106 #define DPRINTF(x)
107 #define DPRINTFN(n, x)
108 #endif
109
110 MODULE_DEPEND(iwi, pci, 1, 1, 1);
111 MODULE_DEPEND(iwi, wlan, 1, 1, 1);
112 MODULE_DEPEND(iwi, firmware, 1, 1, 1);
113
114 enum {
115 IWI_LED_TX,
116 IWI_LED_RX,
117 IWI_LED_POLL,
118 };
119
120 struct iwi_ident {
121 uint16_t vendor;
122 uint16_t device;
123 const char *name;
124 };
125
126 static const struct iwi_ident iwi_ident_table[] = {
127 { 0x8086, 0x4220, "Intel(R) PRO/Wireless 2200BG" },
128 { 0x8086, 0x4221, "Intel(R) PRO/Wireless 2225BG" },
129 { 0x8086, 0x4223, "Intel(R) PRO/Wireless 2915ABG" },
130 { 0x8086, 0x4224, "Intel(R) PRO/Wireless 2915ABG" },
131
132 { 0, 0, NULL }
133 };
134
135 static const uint8_t def_chan_5ghz_band1[] =
136 { 36, 40, 44, 48, 52, 56, 60, 64 };
137 static const uint8_t def_chan_5ghz_band2[] =
138 { 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 };
139 static const uint8_t def_chan_5ghz_band3[] =
140 { 149, 153, 157, 161, 165 };
141
142 static struct ieee80211vap *iwi_vap_create(struct ieee80211com *,
143 const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
144 const uint8_t [IEEE80211_ADDR_LEN],
145 const uint8_t [IEEE80211_ADDR_LEN]);
146 static void iwi_vap_delete(struct ieee80211vap *);
147 static void iwi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
148 static int iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *,
149 int);
150 static void iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
151 static void iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
152 static int iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *,
153 int, bus_addr_t, bus_addr_t);
154 static void iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
155 static void iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
156 static int iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *,
157 int);
158 static void iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
159 static void iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
160 static struct ieee80211_node *iwi_node_alloc(struct ieee80211vap *,
161 const uint8_t [IEEE80211_ADDR_LEN]);
162 static void iwi_node_free(struct ieee80211_node *);
163 static void iwi_media_status(struct ifnet *, struct ifmediareq *);
164 static int iwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
165 static void iwi_wme_init(struct iwi_softc *);
166 static int iwi_wme_setparams(struct iwi_softc *);
167 static int iwi_wme_update(struct ieee80211com *);
168 static uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t);
169 static void iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int,
170 struct iwi_frame *);
171 static void iwi_notification_intr(struct iwi_softc *, struct iwi_notif *);
172 static void iwi_rx_intr(struct iwi_softc *);
173 static void iwi_tx_intr(struct iwi_softc *, struct iwi_tx_ring *);
174 static void iwi_intr(void *);
175 static int iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t);
176 static void iwi_write_ibssnode(struct iwi_softc *, const u_int8_t [], int);
177 static int iwi_tx_start(struct iwi_softc *, struct mbuf *,
178 struct ieee80211_node *, int);
179 static int iwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
180 const struct ieee80211_bpf_params *);
181 static void iwi_start(struct iwi_softc *);
182 static int iwi_transmit(struct ieee80211com *, struct mbuf *);
183 static void iwi_watchdog(void *);
184 static int iwi_ioctl(struct ieee80211com *, u_long, void *);
185 static void iwi_parent(struct ieee80211com *);
186 static void iwi_stop_master(struct iwi_softc *);
187 static int iwi_reset(struct iwi_softc *);
188 static int iwi_load_ucode(struct iwi_softc *, const struct iwi_fw *);
189 static int iwi_load_firmware(struct iwi_softc *, const struct iwi_fw *);
190 static void iwi_release_fw_dma(struct iwi_softc *sc);
191 static int iwi_config(struct iwi_softc *);
192 static int iwi_get_firmware(struct iwi_softc *, enum ieee80211_opmode);
193 static void iwi_put_firmware(struct iwi_softc *);
194 static void iwi_monitor_scan(void *, int);
195 static int iwi_scanchan(struct iwi_softc *, unsigned long, int);
196 static void iwi_scan_start(struct ieee80211com *);
197 static void iwi_scan_end(struct ieee80211com *);
198 static void iwi_set_channel(struct ieee80211com *);
199 static void iwi_scan_curchan(struct ieee80211_scan_state *, unsigned long maxdwell);
200 static void iwi_scan_mindwell(struct ieee80211_scan_state *);
201 static int iwi_auth_and_assoc(struct iwi_softc *, struct ieee80211vap *);
202 static void iwi_disassoc(void *, int);
203 static int iwi_disassociate(struct iwi_softc *, int quiet);
204 static void iwi_init_locked(struct iwi_softc *);
205 static void iwi_init(void *);
206 static int iwi_init_fw_dma(struct iwi_softc *, int);
207 static void iwi_stop_locked(void *);
208 static void iwi_stop(struct iwi_softc *);
209 static void iwi_restart(void *, int);
210 static int iwi_getrfkill(struct iwi_softc *);
211 static void iwi_radio_on(void *, int);
212 static void iwi_radio_off(void *, int);
213 static void iwi_sysctlattach(struct iwi_softc *);
214 static void iwi_led_event(struct iwi_softc *, int);
215 static void iwi_ledattach(struct iwi_softc *);
216 static void iwi_collect_bands(struct ieee80211com *, uint8_t [], size_t);
217 static void iwi_getradiocaps(struct ieee80211com *, int, int *,
218 struct ieee80211_channel []);
219
220 static int iwi_probe(device_t);
221 static int iwi_attach(device_t);
222 static int iwi_detach(device_t);
223 static int iwi_shutdown(device_t);
224 static int iwi_suspend(device_t);
225 static int iwi_resume(device_t);
226
227 static device_method_t iwi_methods[] = {
228 /* Device interface */
229 DEVMETHOD(device_probe, iwi_probe),
230 DEVMETHOD(device_attach, iwi_attach),
231 DEVMETHOD(device_detach, iwi_detach),
232 DEVMETHOD(device_shutdown, iwi_shutdown),
233 DEVMETHOD(device_suspend, iwi_suspend),
234 DEVMETHOD(device_resume, iwi_resume),
235
236 DEVMETHOD_END
237 };
238
239 static driver_t iwi_driver = {
240 "iwi",
241 iwi_methods,
242 sizeof (struct iwi_softc)
243 };
244
245 static devclass_t iwi_devclass;
246
247 DRIVER_MODULE(iwi, pci, iwi_driver, iwi_devclass, NULL, NULL);
248
249 MODULE_VERSION(iwi, 1);
250
251 static __inline uint8_t
MEM_READ_1(struct iwi_softc * sc,uint32_t addr)252 MEM_READ_1(struct iwi_softc *sc, uint32_t addr)
253 {
254 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
255 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA);
256 }
257
258 static __inline uint32_t
MEM_READ_4(struct iwi_softc * sc,uint32_t addr)259 MEM_READ_4(struct iwi_softc *sc, uint32_t addr)
260 {
261 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
262 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA);
263 }
264
265 static int
iwi_probe(device_t dev)266 iwi_probe(device_t dev)
267 {
268 const struct iwi_ident *ident;
269
270 for (ident = iwi_ident_table; ident->name != NULL; ident++) {
271 if (pci_get_vendor(dev) == ident->vendor &&
272 pci_get_device(dev) == ident->device) {
273 device_set_desc(dev, ident->name);
274 return (BUS_PROBE_DEFAULT);
275 }
276 }
277 return ENXIO;
278 }
279
280 static int
iwi_attach(device_t dev)281 iwi_attach(device_t dev)
282 {
283 struct iwi_softc *sc = device_get_softc(dev);
284 struct ieee80211com *ic = &sc->sc_ic;
285 uint16_t val;
286 int i, error;
287
288 sc->sc_dev = dev;
289 sc->sc_ledevent = ticks;
290
291 IWI_LOCK_INIT(sc);
292 mbufq_init(&sc->sc_snd, ifqmaxlen);
293
294 sc->sc_unr = new_unrhdr(1, IWI_MAX_IBSSNODE-1, &sc->sc_mtx);
295
296 TASK_INIT(&sc->sc_radiontask, 0, iwi_radio_on, sc);
297 TASK_INIT(&sc->sc_radiofftask, 0, iwi_radio_off, sc);
298 TASK_INIT(&sc->sc_restarttask, 0, iwi_restart, sc);
299 TASK_INIT(&sc->sc_disassoctask, 0, iwi_disassoc, sc);
300 TASK_INIT(&sc->sc_monitortask, 0, iwi_monitor_scan, sc);
301
302 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
303 callout_init_mtx(&sc->sc_rftimer, &sc->sc_mtx, 0);
304
305 pci_write_config(dev, 0x41, 0, 1);
306
307 /* enable bus-mastering */
308 pci_enable_busmaster(dev);
309
310 i = PCIR_BAR(0);
311 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
312 if (sc->mem == NULL) {
313 device_printf(dev, "could not allocate memory resource\n");
314 goto fail;
315 }
316
317 sc->sc_st = rman_get_bustag(sc->mem);
318 sc->sc_sh = rman_get_bushandle(sc->mem);
319
320 i = 0;
321 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
322 RF_ACTIVE | RF_SHAREABLE);
323 if (sc->irq == NULL) {
324 device_printf(dev, "could not allocate interrupt resource\n");
325 goto fail;
326 }
327
328 if (iwi_reset(sc) != 0) {
329 device_printf(dev, "could not reset adapter\n");
330 goto fail;
331 }
332
333 /*
334 * Allocate rings.
335 */
336 if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) {
337 device_printf(dev, "could not allocate Cmd ring\n");
338 goto fail;
339 }
340
341 for (i = 0; i < 4; i++) {
342 error = iwi_alloc_tx_ring(sc, &sc->txq[i], IWI_TX_RING_COUNT,
343 IWI_CSR_TX1_RIDX + i * 4,
344 IWI_CSR_TX1_WIDX + i * 4);
345 if (error != 0) {
346 device_printf(dev, "could not allocate Tx ring %d\n",
347 i+i);
348 goto fail;
349 }
350 }
351
352 if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) {
353 device_printf(dev, "could not allocate Rx ring\n");
354 goto fail;
355 }
356
357 iwi_wme_init(sc);
358
359 ic->ic_softc = sc;
360 ic->ic_name = device_get_nameunit(dev);
361 ic->ic_opmode = IEEE80211_M_STA;
362 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
363
364 /* set device capabilities */
365 ic->ic_caps =
366 IEEE80211_C_STA /* station mode supported */
367 | IEEE80211_C_IBSS /* IBSS mode supported */
368 | IEEE80211_C_MONITOR /* monitor mode supported */
369 | IEEE80211_C_PMGT /* power save supported */
370 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
371 | IEEE80211_C_WPA /* 802.11i */
372 | IEEE80211_C_WME /* 802.11e */
373 #if 0
374 | IEEE80211_C_BGSCAN /* capable of bg scanning */
375 #endif
376 ;
377
378 /* read MAC address from EEPROM */
379 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0);
380 ic->ic_macaddr[0] = val & 0xff;
381 ic->ic_macaddr[1] = val >> 8;
382 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1);
383 ic->ic_macaddr[2] = val & 0xff;
384 ic->ic_macaddr[3] = val >> 8;
385 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2);
386 ic->ic_macaddr[4] = val & 0xff;
387 ic->ic_macaddr[5] = val >> 8;
388
389 iwi_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
390 ic->ic_channels);
391
392 ieee80211_ifattach(ic);
393 /* override default methods */
394 ic->ic_node_alloc = iwi_node_alloc;
395 sc->sc_node_free = ic->ic_node_free;
396 ic->ic_node_free = iwi_node_free;
397 ic->ic_raw_xmit = iwi_raw_xmit;
398 ic->ic_scan_start = iwi_scan_start;
399 ic->ic_scan_end = iwi_scan_end;
400 ic->ic_set_channel = iwi_set_channel;
401 ic->ic_scan_curchan = iwi_scan_curchan;
402 ic->ic_scan_mindwell = iwi_scan_mindwell;
403 ic->ic_wme.wme_update = iwi_wme_update;
404
405 ic->ic_vap_create = iwi_vap_create;
406 ic->ic_vap_delete = iwi_vap_delete;
407 ic->ic_ioctl = iwi_ioctl;
408 ic->ic_transmit = iwi_transmit;
409 ic->ic_parent = iwi_parent;
410 ic->ic_getradiocaps = iwi_getradiocaps;
411
412 ieee80211_radiotap_attach(ic,
413 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
414 IWI_TX_RADIOTAP_PRESENT,
415 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
416 IWI_RX_RADIOTAP_PRESENT);
417
418 iwi_sysctlattach(sc);
419 iwi_ledattach(sc);
420
421 /*
422 * Hook our interrupt after all initialization is complete.
423 */
424 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
425 NULL, iwi_intr, sc, &sc->sc_ih);
426 if (error != 0) {
427 device_printf(dev, "could not set up interrupt\n");
428 goto fail;
429 }
430
431 if (bootverbose)
432 ieee80211_announce(ic);
433
434 return 0;
435 fail:
436 /* XXX fix */
437 iwi_detach(dev);
438 return ENXIO;
439 }
440
441 static int
iwi_detach(device_t dev)442 iwi_detach(device_t dev)
443 {
444 struct iwi_softc *sc = device_get_softc(dev);
445 struct ieee80211com *ic = &sc->sc_ic;
446
447 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
448
449 /* NB: do early to drain any pending tasks */
450 ieee80211_draintask(ic, &sc->sc_radiontask);
451 ieee80211_draintask(ic, &sc->sc_radiofftask);
452 ieee80211_draintask(ic, &sc->sc_restarttask);
453 ieee80211_draintask(ic, &sc->sc_disassoctask);
454 ieee80211_draintask(ic, &sc->sc_monitortask);
455
456 iwi_stop(sc);
457
458 ieee80211_ifdetach(ic);
459
460 iwi_put_firmware(sc);
461 iwi_release_fw_dma(sc);
462
463 iwi_free_cmd_ring(sc, &sc->cmdq);
464 iwi_free_tx_ring(sc, &sc->txq[0]);
465 iwi_free_tx_ring(sc, &sc->txq[1]);
466 iwi_free_tx_ring(sc, &sc->txq[2]);
467 iwi_free_tx_ring(sc, &sc->txq[3]);
468 iwi_free_rx_ring(sc, &sc->rxq);
469
470 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
471
472 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
473 sc->mem);
474
475 delete_unrhdr(sc->sc_unr);
476 mbufq_drain(&sc->sc_snd);
477
478 IWI_LOCK_DESTROY(sc);
479
480 return 0;
481 }
482
483 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])484 iwi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
485 enum ieee80211_opmode opmode, int flags,
486 const uint8_t bssid[IEEE80211_ADDR_LEN],
487 const uint8_t mac[IEEE80211_ADDR_LEN])
488 {
489 struct iwi_softc *sc = ic->ic_softc;
490 struct iwi_vap *ivp;
491 struct ieee80211vap *vap;
492 int i;
493
494 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
495 return NULL;
496 /*
497 * Get firmware image (and possibly dma memory) on mode change.
498 */
499 if (iwi_get_firmware(sc, opmode))
500 return NULL;
501 /* allocate DMA memory for mapping firmware image */
502 i = sc->fw_fw.size;
503 if (sc->fw_boot.size > i)
504 i = sc->fw_boot.size;
505 /* XXX do we dma the ucode as well ? */
506 if (sc->fw_uc.size > i)
507 i = sc->fw_uc.size;
508 if (iwi_init_fw_dma(sc, i))
509 return NULL;
510
511 ivp = malloc(sizeof(struct iwi_vap), M_80211_VAP, M_WAITOK | M_ZERO);
512 vap = &ivp->iwi_vap;
513 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
514 /* override the default, the setting comes from the linux driver */
515 vap->iv_bmissthreshold = 24;
516 /* override with driver methods */
517 ivp->iwi_newstate = vap->iv_newstate;
518 vap->iv_newstate = iwi_newstate;
519
520 /* complete setup */
521 ieee80211_vap_attach(vap, ieee80211_media_change, iwi_media_status,
522 mac);
523 ic->ic_opmode = opmode;
524 return vap;
525 }
526
527 static void
iwi_vap_delete(struct ieee80211vap * vap)528 iwi_vap_delete(struct ieee80211vap *vap)
529 {
530 struct iwi_vap *ivp = IWI_VAP(vap);
531
532 ieee80211_vap_detach(vap);
533 free(ivp, M_80211_VAP);
534 }
535
536 static void
iwi_dma_map_addr(void * arg,bus_dma_segment_t * segs,int nseg,int error)537 iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
538 {
539 if (error != 0)
540 return;
541
542 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
543
544 *(bus_addr_t *)arg = segs[0].ds_addr;
545 }
546
547 static int
iwi_alloc_cmd_ring(struct iwi_softc * sc,struct iwi_cmd_ring * ring,int count)548 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, int count)
549 {
550 int error;
551
552 ring->count = count;
553 ring->queued = 0;
554 ring->cur = ring->next = 0;
555
556 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
557 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
558 count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE, 0,
559 NULL, NULL, &ring->desc_dmat);
560 if (error != 0) {
561 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
562 goto fail;
563 }
564
565 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
566 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
567 if (error != 0) {
568 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
569 goto fail;
570 }
571
572 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
573 count * IWI_CMD_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
574 if (error != 0) {
575 device_printf(sc->sc_dev, "could not load desc DMA map\n");
576 goto fail;
577 }
578
579 return 0;
580
581 fail: iwi_free_cmd_ring(sc, ring);
582 return error;
583 }
584
585 static void
iwi_reset_cmd_ring(struct iwi_softc * sc,struct iwi_cmd_ring * ring)586 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
587 {
588 ring->queued = 0;
589 ring->cur = ring->next = 0;
590 }
591
592 static void
iwi_free_cmd_ring(struct iwi_softc * sc,struct iwi_cmd_ring * ring)593 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
594 {
595 if (ring->desc != NULL) {
596 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
597 BUS_DMASYNC_POSTWRITE);
598 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
599 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
600 }
601
602 if (ring->desc_dmat != NULL)
603 bus_dma_tag_destroy(ring->desc_dmat);
604 }
605
606 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)607 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, int count,
608 bus_addr_t csr_ridx, bus_addr_t csr_widx)
609 {
610 int i, error;
611
612 ring->count = count;
613 ring->queued = 0;
614 ring->cur = ring->next = 0;
615 ring->csr_ridx = csr_ridx;
616 ring->csr_widx = csr_widx;
617
618 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
619 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
620 count * IWI_TX_DESC_SIZE, 1, count * IWI_TX_DESC_SIZE, 0, NULL,
621 NULL, &ring->desc_dmat);
622 if (error != 0) {
623 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
624 goto fail;
625 }
626
627 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
628 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
629 if (error != 0) {
630 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
631 goto fail;
632 }
633
634 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
635 count * IWI_TX_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
636 if (error != 0) {
637 device_printf(sc->sc_dev, "could not load desc DMA map\n");
638 goto fail;
639 }
640
641 ring->data = malloc(count * sizeof (struct iwi_tx_data), M_DEVBUF,
642 M_NOWAIT | M_ZERO);
643 if (ring->data == NULL) {
644 device_printf(sc->sc_dev, "could not allocate soft data\n");
645 error = ENOMEM;
646 goto fail;
647 }
648
649 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
650 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
651 IWI_MAX_NSEG, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
652 if (error != 0) {
653 device_printf(sc->sc_dev, "could not create data DMA tag\n");
654 goto fail;
655 }
656
657 for (i = 0; i < count; i++) {
658 error = bus_dmamap_create(ring->data_dmat, 0,
659 &ring->data[i].map);
660 if (error != 0) {
661 device_printf(sc->sc_dev, "could not create DMA map\n");
662 goto fail;
663 }
664 }
665
666 return 0;
667
668 fail: iwi_free_tx_ring(sc, ring);
669 return error;
670 }
671
672 static void
iwi_reset_tx_ring(struct iwi_softc * sc,struct iwi_tx_ring * ring)673 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
674 {
675 struct iwi_tx_data *data;
676 int i;
677
678 for (i = 0; i < ring->count; i++) {
679 data = &ring->data[i];
680
681 if (data->m != NULL) {
682 bus_dmamap_sync(ring->data_dmat, data->map,
683 BUS_DMASYNC_POSTWRITE);
684 bus_dmamap_unload(ring->data_dmat, data->map);
685 m_freem(data->m);
686 data->m = NULL;
687 }
688
689 if (data->ni != NULL) {
690 ieee80211_free_node(data->ni);
691 data->ni = NULL;
692 }
693 }
694
695 ring->queued = 0;
696 ring->cur = ring->next = 0;
697 }
698
699 static void
iwi_free_tx_ring(struct iwi_softc * sc,struct iwi_tx_ring * ring)700 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
701 {
702 struct iwi_tx_data *data;
703 int i;
704
705 if (ring->desc != NULL) {
706 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
707 BUS_DMASYNC_POSTWRITE);
708 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
709 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
710 }
711
712 if (ring->desc_dmat != NULL)
713 bus_dma_tag_destroy(ring->desc_dmat);
714
715 if (ring->data != NULL) {
716 for (i = 0; i < ring->count; i++) {
717 data = &ring->data[i];
718
719 if (data->m != NULL) {
720 bus_dmamap_sync(ring->data_dmat, data->map,
721 BUS_DMASYNC_POSTWRITE);
722 bus_dmamap_unload(ring->data_dmat, data->map);
723 m_freem(data->m);
724 }
725
726 if (data->ni != NULL)
727 ieee80211_free_node(data->ni);
728
729 if (data->map != NULL)
730 bus_dmamap_destroy(ring->data_dmat, data->map);
731 }
732
733 free(ring->data, M_DEVBUF);
734 }
735
736 if (ring->data_dmat != NULL)
737 bus_dma_tag_destroy(ring->data_dmat);
738 }
739
740 static int
iwi_alloc_rx_ring(struct iwi_softc * sc,struct iwi_rx_ring * ring,int count)741 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count)
742 {
743 struct iwi_rx_data *data;
744 int i, error;
745
746 ring->count = count;
747 ring->cur = 0;
748
749 ring->data = malloc(count * sizeof (struct iwi_rx_data), M_DEVBUF,
750 M_NOWAIT | M_ZERO);
751 if (ring->data == NULL) {
752 device_printf(sc->sc_dev, "could not allocate soft data\n");
753 error = ENOMEM;
754 goto fail;
755 }
756
757 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
758 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
759 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
760 if (error != 0) {
761 device_printf(sc->sc_dev, "could not create data DMA tag\n");
762 goto fail;
763 }
764
765 for (i = 0; i < count; i++) {
766 data = &ring->data[i];
767
768 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
769 if (error != 0) {
770 device_printf(sc->sc_dev, "could not create DMA map\n");
771 goto fail;
772 }
773
774 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
775 if (data->m == NULL) {
776 device_printf(sc->sc_dev,
777 "could not allocate rx mbuf\n");
778 error = ENOMEM;
779 goto fail;
780 }
781
782 error = bus_dmamap_load(ring->data_dmat, data->map,
783 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
784 &data->physaddr, 0);
785 if (error != 0) {
786 device_printf(sc->sc_dev,
787 "could not load rx buf DMA map");
788 goto fail;
789 }
790
791 data->reg = IWI_CSR_RX_BASE + i * 4;
792 }
793
794 return 0;
795
796 fail: iwi_free_rx_ring(sc, ring);
797 return error;
798 }
799
800 static void
iwi_reset_rx_ring(struct iwi_softc * sc,struct iwi_rx_ring * ring)801 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
802 {
803 ring->cur = 0;
804 }
805
806 static void
iwi_free_rx_ring(struct iwi_softc * sc,struct iwi_rx_ring * ring)807 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
808 {
809 struct iwi_rx_data *data;
810 int i;
811
812 if (ring->data != NULL) {
813 for (i = 0; i < ring->count; i++) {
814 data = &ring->data[i];
815
816 if (data->m != NULL) {
817 bus_dmamap_sync(ring->data_dmat, data->map,
818 BUS_DMASYNC_POSTREAD);
819 bus_dmamap_unload(ring->data_dmat, data->map);
820 m_freem(data->m);
821 }
822
823 if (data->map != NULL)
824 bus_dmamap_destroy(ring->data_dmat, data->map);
825 }
826
827 free(ring->data, M_DEVBUF);
828 }
829
830 if (ring->data_dmat != NULL)
831 bus_dma_tag_destroy(ring->data_dmat);
832 }
833
834 static int
iwi_shutdown(device_t dev)835 iwi_shutdown(device_t dev)
836 {
837 struct iwi_softc *sc = device_get_softc(dev);
838
839 iwi_stop(sc);
840 iwi_put_firmware(sc); /* ??? XXX */
841
842 return 0;
843 }
844
845 static int
iwi_suspend(device_t dev)846 iwi_suspend(device_t dev)
847 {
848 struct iwi_softc *sc = device_get_softc(dev);
849 struct ieee80211com *ic = &sc->sc_ic;
850
851 ieee80211_suspend_all(ic);
852 return 0;
853 }
854
855 static int
iwi_resume(device_t dev)856 iwi_resume(device_t dev)
857 {
858 struct iwi_softc *sc = device_get_softc(dev);
859 struct ieee80211com *ic = &sc->sc_ic;
860
861 pci_write_config(dev, 0x41, 0, 1);
862
863 ieee80211_resume_all(ic);
864 return 0;
865 }
866
867 static struct ieee80211_node *
iwi_node_alloc(struct ieee80211vap * vap,const uint8_t mac[IEEE80211_ADDR_LEN])868 iwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
869 {
870 struct iwi_node *in;
871
872 in = malloc(sizeof (struct iwi_node), M_80211_NODE, M_NOWAIT | M_ZERO);
873 if (in == NULL)
874 return NULL;
875 /* XXX assign sta table entry for adhoc */
876 in->in_station = -1;
877
878 return &in->in_node;
879 }
880
881 static void
iwi_node_free(struct ieee80211_node * ni)882 iwi_node_free(struct ieee80211_node *ni)
883 {
884 struct ieee80211com *ic = ni->ni_ic;
885 struct iwi_softc *sc = ic->ic_softc;
886 struct iwi_node *in = (struct iwi_node *)ni;
887
888 if (in->in_station != -1) {
889 DPRINTF(("%s mac %6D station %u\n", __func__,
890 ni->ni_macaddr, ":", in->in_station));
891 free_unr(sc->sc_unr, in->in_station);
892 }
893
894 sc->sc_node_free(ni);
895 }
896
897 /*
898 * Convert h/w rate code to IEEE rate code.
899 */
900 static int
iwi_cvtrate(int iwirate)901 iwi_cvtrate(int iwirate)
902 {
903 switch (iwirate) {
904 case IWI_RATE_DS1: return 2;
905 case IWI_RATE_DS2: return 4;
906 case IWI_RATE_DS5: return 11;
907 case IWI_RATE_DS11: return 22;
908 case IWI_RATE_OFDM6: return 12;
909 case IWI_RATE_OFDM9: return 18;
910 case IWI_RATE_OFDM12: return 24;
911 case IWI_RATE_OFDM18: return 36;
912 case IWI_RATE_OFDM24: return 48;
913 case IWI_RATE_OFDM36: return 72;
914 case IWI_RATE_OFDM48: return 96;
915 case IWI_RATE_OFDM54: return 108;
916 }
917 return 0;
918 }
919
920 /*
921 * The firmware automatically adapts the transmit speed. We report its current
922 * value here.
923 */
924 static void
iwi_media_status(struct ifnet * ifp,struct ifmediareq * imr)925 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr)
926 {
927 struct ieee80211vap *vap = ifp->if_softc;
928 struct ieee80211com *ic = vap->iv_ic;
929 struct iwi_softc *sc = ic->ic_softc;
930 struct ieee80211_node *ni;
931
932 /* read current transmission rate from adapter */
933 ni = ieee80211_ref_node(vap->iv_bss);
934 ni->ni_txrate =
935 iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE));
936 ieee80211_free_node(ni);
937 ieee80211_media_status(ifp, imr);
938 }
939
940 static int
iwi_newstate(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)941 iwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
942 {
943 struct iwi_vap *ivp = IWI_VAP(vap);
944 struct ieee80211com *ic = vap->iv_ic;
945 struct iwi_softc *sc = ic->ic_softc;
946 IWI_LOCK_DECL;
947
948 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
949 ieee80211_state_name[vap->iv_state],
950 ieee80211_state_name[nstate], sc->flags));
951
952 IEEE80211_UNLOCK(ic);
953 IWI_LOCK(sc);
954 switch (nstate) {
955 case IEEE80211_S_INIT:
956 /*
957 * NB: don't try to do this if iwi_stop_master has
958 * shutdown the firmware and disabled interrupts.
959 */
960 if (vap->iv_state == IEEE80211_S_RUN &&
961 (sc->flags & IWI_FLAG_FW_INITED))
962 iwi_disassociate(sc, 0);
963 break;
964 case IEEE80211_S_AUTH:
965 iwi_auth_and_assoc(sc, vap);
966 break;
967 case IEEE80211_S_RUN:
968 if (vap->iv_opmode == IEEE80211_M_IBSS &&
969 vap->iv_state == IEEE80211_S_SCAN) {
970 /*
971 * XXX when joining an ibss network we are called
972 * with a SCAN -> RUN transition on scan complete.
973 * Use that to call iwi_auth_and_assoc. On completing
974 * the join we are then called again with an
975 * AUTH -> RUN transition and we want to do nothing.
976 * This is all totally bogus and needs to be redone.
977 */
978 iwi_auth_and_assoc(sc, vap);
979 } else if (vap->iv_opmode == IEEE80211_M_MONITOR)
980 ieee80211_runtask(ic, &sc->sc_monitortask);
981 break;
982 case IEEE80211_S_ASSOC:
983 /*
984 * If we are transitioning from AUTH then just wait
985 * for the ASSOC status to come back from the firmware.
986 * Otherwise we need to issue the association request.
987 */
988 if (vap->iv_state == IEEE80211_S_AUTH)
989 break;
990 iwi_auth_and_assoc(sc, vap);
991 break;
992 default:
993 break;
994 }
995 IWI_UNLOCK(sc);
996 IEEE80211_LOCK(ic);
997 return ivp->iwi_newstate(vap, nstate, arg);
998 }
999
1000 /*
1001 * WME parameters coming from IEEE 802.11e specification. These values are
1002 * already declared in ieee80211_proto.c, but they are static so they can't
1003 * be reused here.
1004 */
1005 static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = {
1006 { 0, 3, 5, 7, 0 }, /* WME_AC_BE */
1007 { 0, 3, 5, 10, 0 }, /* WME_AC_BK */
1008 { 0, 2, 4, 5, 188 }, /* WME_AC_VI */
1009 { 0, 2, 3, 4, 102 } /* WME_AC_VO */
1010 };
1011
1012 static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = {
1013 { 0, 3, 4, 6, 0 }, /* WME_AC_BE */
1014 { 0, 3, 4, 10, 0 }, /* WME_AC_BK */
1015 { 0, 2, 3, 4, 94 }, /* WME_AC_VI */
1016 { 0, 2, 2, 3, 47 } /* WME_AC_VO */
1017 };
1018 #define IWI_EXP2(v) htole16((1 << (v)) - 1)
1019 #define IWI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v))
1020
1021 static void
iwi_wme_init(struct iwi_softc * sc)1022 iwi_wme_init(struct iwi_softc *sc)
1023 {
1024 const struct wmeParams *wmep;
1025 int ac;
1026
1027 memset(sc->wme, 0, sizeof sc->wme);
1028 for (ac = 0; ac < WME_NUM_AC; ac++) {
1029 /* set WME values for CCK modulation */
1030 wmep = &iwi_wme_cck_params[ac];
1031 sc->wme[1].aifsn[ac] = wmep->wmep_aifsn;
1032 sc->wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1033 sc->wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1034 sc->wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1035 sc->wme[1].acm[ac] = wmep->wmep_acm;
1036
1037 /* set WME values for OFDM modulation */
1038 wmep = &iwi_wme_ofdm_params[ac];
1039 sc->wme[2].aifsn[ac] = wmep->wmep_aifsn;
1040 sc->wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1041 sc->wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1042 sc->wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1043 sc->wme[2].acm[ac] = wmep->wmep_acm;
1044 }
1045 }
1046
1047 static int
iwi_wme_setparams(struct iwi_softc * sc)1048 iwi_wme_setparams(struct iwi_softc *sc)
1049 {
1050 struct ieee80211com *ic = &sc->sc_ic;
1051 struct chanAccParams chp;
1052 const struct wmeParams *wmep;
1053 int ac;
1054
1055 ieee80211_wme_ic_getparams(ic, &chp);
1056
1057 for (ac = 0; ac < WME_NUM_AC; ac++) {
1058 /* set WME values for current operating mode */
1059 wmep = &chp.cap_wmeParams[ac];
1060 sc->wme[0].aifsn[ac] = wmep->wmep_aifsn;
1061 sc->wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1062 sc->wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1063 sc->wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1064 sc->wme[0].acm[ac] = wmep->wmep_acm;
1065 }
1066
1067 DPRINTF(("Setting WME parameters\n"));
1068 return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, sc->wme, sizeof sc->wme);
1069 }
1070 #undef IWI_USEC
1071 #undef IWI_EXP2
1072
1073 static int
iwi_wme_update(struct ieee80211com * ic)1074 iwi_wme_update(struct ieee80211com *ic)
1075 {
1076 struct iwi_softc *sc = ic->ic_softc;
1077 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1078 IWI_LOCK_DECL;
1079
1080 /*
1081 * We may be called to update the WME parameters in
1082 * the adapter at various places. If we're already
1083 * associated then initiate the request immediately;
1084 * otherwise we assume the params will get sent down
1085 * to the adapter as part of the work iwi_auth_and_assoc
1086 * does.
1087 */
1088 if (vap->iv_state == IEEE80211_S_RUN) {
1089 IWI_LOCK(sc);
1090 iwi_wme_setparams(sc);
1091 IWI_UNLOCK(sc);
1092 }
1093 return (0);
1094 }
1095
1096 static int
iwi_wme_setie(struct iwi_softc * sc)1097 iwi_wme_setie(struct iwi_softc *sc)
1098 {
1099 struct ieee80211_wme_info wme;
1100
1101 memset(&wme, 0, sizeof wme);
1102 wme.wme_id = IEEE80211_ELEMID_VENDOR;
1103 wme.wme_len = sizeof (struct ieee80211_wme_info) - 2;
1104 wme.wme_oui[0] = 0x00;
1105 wme.wme_oui[1] = 0x50;
1106 wme.wme_oui[2] = 0xf2;
1107 wme.wme_type = WME_OUI_TYPE;
1108 wme.wme_subtype = WME_INFO_OUI_SUBTYPE;
1109 wme.wme_version = WME_VERSION;
1110 wme.wme_info = 0;
1111
1112 DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len));
1113 return iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme);
1114 }
1115
1116 /*
1117 * Read 16 bits at address 'addr' from the serial EEPROM.
1118 */
1119 static uint16_t
iwi_read_prom_word(struct iwi_softc * sc,uint8_t addr)1120 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr)
1121 {
1122 uint32_t tmp;
1123 uint16_t val;
1124 int n;
1125
1126 /* clock C once before the first command */
1127 IWI_EEPROM_CTL(sc, 0);
1128 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1129 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1130 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1131
1132 /* write start bit (1) */
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
1136 /* write READ opcode (10) */
1137 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1138 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1139 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1140 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1141
1142 /* write address A7-A0 */
1143 for (n = 7; n >= 0; n--) {
1144 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1145 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D));
1146 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1147 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C);
1148 }
1149
1150 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1151
1152 /* read data Q15-Q0 */
1153 val = 0;
1154 for (n = 15; n >= 0; n--) {
1155 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1156 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1157 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL);
1158 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n;
1159 }
1160
1161 IWI_EEPROM_CTL(sc, 0);
1162
1163 /* clear Chip Select and clock C */
1164 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1165 IWI_EEPROM_CTL(sc, 0);
1166 IWI_EEPROM_CTL(sc, IWI_EEPROM_C);
1167
1168 return val;
1169 }
1170
1171 static void
iwi_setcurchan(struct iwi_softc * sc,int chan)1172 iwi_setcurchan(struct iwi_softc *sc, int chan)
1173 {
1174 struct ieee80211com *ic = &sc->sc_ic;
1175
1176 sc->curchan = chan;
1177 ieee80211_radiotap_chan_change(ic);
1178 }
1179
1180 static void
iwi_frame_intr(struct iwi_softc * sc,struct iwi_rx_data * data,int i,struct iwi_frame * frame)1181 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i,
1182 struct iwi_frame *frame)
1183 {
1184 struct ieee80211com *ic = &sc->sc_ic;
1185 struct mbuf *mnew, *m;
1186 struct ieee80211_node *ni;
1187 int type, error, framelen;
1188 int8_t rssi, nf;
1189 IWI_LOCK_DECL;
1190
1191 framelen = le16toh(frame->len);
1192 if (framelen < IEEE80211_MIN_LEN || framelen > MCLBYTES) {
1193 /*
1194 * XXX >MCLBYTES is bogus as it means the h/w dma'd
1195 * out of bounds; need to figure out how to limit
1196 * frame size in the firmware
1197 */
1198 /* XXX stat */
1199 DPRINTFN(1,
1200 ("drop rx frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1201 le16toh(frame->len), frame->chan, frame->rssi,
1202 frame->rssi_dbm));
1203 return;
1204 }
1205
1206 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1207 le16toh(frame->len), frame->chan, frame->rssi, frame->rssi_dbm));
1208
1209 if (frame->chan != sc->curchan)
1210 iwi_setcurchan(sc, frame->chan);
1211
1212 /*
1213 * Try to allocate a new mbuf for this ring element and load it before
1214 * processing the current mbuf. If the ring element cannot be loaded,
1215 * drop the received packet and reuse the old mbuf. In the unlikely
1216 * case that the old mbuf can't be reloaded either, explicitly panic.
1217 */
1218 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1219 if (mnew == NULL) {
1220 counter_u64_add(ic->ic_ierrors, 1);
1221 return;
1222 }
1223
1224 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1225
1226 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1227 mtod(mnew, void *), MCLBYTES, iwi_dma_map_addr, &data->physaddr,
1228 0);
1229 if (error != 0) {
1230 m_freem(mnew);
1231
1232 /* try to reload the old mbuf */
1233 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1234 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
1235 &data->physaddr, 0);
1236 if (error != 0) {
1237 /* very unlikely that it will fail... */
1238 panic("%s: could not load old rx mbuf",
1239 device_get_name(sc->sc_dev));
1240 }
1241 counter_u64_add(ic->ic_ierrors, 1);
1242 return;
1243 }
1244
1245 /*
1246 * New mbuf successfully loaded, update Rx ring and continue
1247 * processing.
1248 */
1249 m = data->m;
1250 data->m = mnew;
1251 CSR_WRITE_4(sc, data->reg, data->physaddr);
1252
1253 /* finalize mbuf */
1254 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) +
1255 sizeof (struct iwi_frame) + framelen;
1256
1257 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame));
1258
1259 rssi = frame->rssi_dbm;
1260 nf = -95;
1261 if (ieee80211_radiotap_active(ic)) {
1262 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap;
1263
1264 tap->wr_flags = 0;
1265 tap->wr_antsignal = rssi;
1266 tap->wr_antnoise = nf;
1267 tap->wr_rate = iwi_cvtrate(frame->rate);
1268 tap->wr_antenna = frame->antenna;
1269 }
1270 IWI_UNLOCK(sc);
1271
1272 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1273 if (ni != NULL) {
1274 type = ieee80211_input(ni, m, rssi, nf);
1275 ieee80211_free_node(ni);
1276 } else
1277 type = ieee80211_input_all(ic, m, rssi, nf);
1278
1279 IWI_LOCK(sc);
1280 if (sc->sc_softled) {
1281 /*
1282 * Blink for any data frame. Otherwise do a
1283 * heartbeat-style blink when idle. The latter
1284 * is mainly for station mode where we depend on
1285 * periodic beacon frames to trigger the poll event.
1286 */
1287 if (type == IEEE80211_FC0_TYPE_DATA) {
1288 sc->sc_rxrate = frame->rate;
1289 iwi_led_event(sc, IWI_LED_RX);
1290 } else if (ticks - sc->sc_ledevent >= sc->sc_ledidle)
1291 iwi_led_event(sc, IWI_LED_POLL);
1292 }
1293 }
1294
1295 /*
1296 * Check for an association response frame to see if QoS
1297 * has been negotiated. We parse just enough to figure
1298 * out if we're supposed to use QoS. The proper solution
1299 * is to pass the frame up so ieee80211_input can do the
1300 * work but that's made hard by how things currently are
1301 * done in the driver.
1302 */
1303 static void
iwi_checkforqos(struct ieee80211vap * vap,const struct ieee80211_frame * wh,int len)1304 iwi_checkforqos(struct ieee80211vap *vap,
1305 const struct ieee80211_frame *wh, int len)
1306 {
1307 #define SUBTYPE(wh) ((wh)->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
1308 const uint8_t *frm, *efrm, *wme;
1309 struct ieee80211_node *ni;
1310 uint16_t capinfo, status, associd;
1311
1312 /* NB: +8 for capinfo, status, associd, and first ie */
1313 if (!(sizeof(*wh)+8 < len && len < IEEE80211_MAX_LEN) ||
1314 SUBTYPE(wh) != IEEE80211_FC0_SUBTYPE_ASSOC_RESP)
1315 return;
1316 /*
1317 * asresp frame format
1318 * [2] capability information
1319 * [2] status
1320 * [2] association ID
1321 * [tlv] supported rates
1322 * [tlv] extended supported rates
1323 * [tlv] WME
1324 */
1325 frm = (const uint8_t *)&wh[1];
1326 efrm = ((const uint8_t *) wh) + len;
1327
1328 capinfo = le16toh(*(const uint16_t *)frm);
1329 frm += 2;
1330 status = le16toh(*(const uint16_t *)frm);
1331 frm += 2;
1332 associd = le16toh(*(const uint16_t *)frm);
1333 frm += 2;
1334
1335 wme = NULL;
1336 while (efrm - frm > 1) {
1337 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
1338 switch (*frm) {
1339 case IEEE80211_ELEMID_VENDOR:
1340 if (iswmeoui(frm))
1341 wme = frm;
1342 break;
1343 }
1344 frm += frm[1] + 2;
1345 }
1346
1347 ni = ieee80211_ref_node(vap->iv_bss);
1348 ni->ni_capinfo = capinfo;
1349 ni->ni_associd = associd & 0x3fff;
1350 if (wme != NULL)
1351 ni->ni_flags |= IEEE80211_NODE_QOS;
1352 else
1353 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1354 ieee80211_free_node(ni);
1355 #undef SUBTYPE
1356 }
1357
1358 static void
iwi_notif_link_quality(struct iwi_softc * sc,struct iwi_notif * notif)1359 iwi_notif_link_quality(struct iwi_softc *sc, struct iwi_notif *notif)
1360 {
1361 struct iwi_notif_link_quality *lq;
1362 int len;
1363
1364 len = le16toh(notif->len);
1365
1366 DPRINTFN(5, ("Notification (%u) - len=%d, sizeof=%zu\n",
1367 notif->type,
1368 len,
1369 sizeof(struct iwi_notif_link_quality)
1370 ));
1371
1372 /* enforce length */
1373 if (len != sizeof(struct iwi_notif_link_quality)) {
1374 DPRINTFN(5, ("Notification: (%u) too short (%d)\n",
1375 notif->type,
1376 len));
1377 return;
1378 }
1379
1380 lq = (struct iwi_notif_link_quality *)(notif + 1);
1381 memcpy(&sc->sc_linkqual, lq, sizeof(sc->sc_linkqual));
1382 sc->sc_linkqual_valid = 1;
1383 }
1384
1385 /*
1386 * Task queue callbacks for iwi_notification_intr used to avoid LOR's.
1387 */
1388
1389 static void
iwi_notification_intr(struct iwi_softc * sc,struct iwi_notif * notif)1390 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif)
1391 {
1392 struct ieee80211com *ic = &sc->sc_ic;
1393 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1394 struct iwi_notif_scan_channel *chan;
1395 struct iwi_notif_scan_complete *scan;
1396 struct iwi_notif_authentication *auth;
1397 struct iwi_notif_association *assoc;
1398 struct iwi_notif_beacon_state *beacon;
1399
1400 switch (notif->type) {
1401 case IWI_NOTIF_TYPE_SCAN_CHANNEL:
1402 chan = (struct iwi_notif_scan_channel *)(notif + 1);
1403
1404 DPRINTFN(3, ("Scan of channel %u complete (%u)\n",
1405 ieee80211_ieee2mhz(chan->nchan, 0), chan->nchan));
1406
1407 /* Reset the timer, the scan is still going */
1408 sc->sc_state_timer = 3;
1409 break;
1410
1411 case IWI_NOTIF_TYPE_SCAN_COMPLETE:
1412 scan = (struct iwi_notif_scan_complete *)(notif + 1);
1413
1414 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan,
1415 scan->status));
1416
1417 IWI_STATE_END(sc, IWI_FW_SCANNING);
1418
1419 /*
1420 * Monitor mode works by doing a passive scan to set
1421 * the channel and enable rx. Because we don't want
1422 * to abort a scan lest the firmware crash we scan
1423 * for a short period of time and automatically restart
1424 * the scan when notified the sweep has completed.
1425 */
1426 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
1427 ieee80211_runtask(ic, &sc->sc_monitortask);
1428 break;
1429 }
1430
1431 if (scan->status == IWI_SCAN_COMPLETED) {
1432 /* NB: don't need to defer, net80211 does it for us */
1433 ieee80211_scan_next(vap);
1434 }
1435 break;
1436
1437 case IWI_NOTIF_TYPE_AUTHENTICATION:
1438 auth = (struct iwi_notif_authentication *)(notif + 1);
1439 switch (auth->state) {
1440 case IWI_AUTH_SUCCESS:
1441 DPRINTFN(2, ("Authentication succeeeded\n"));
1442 ieee80211_new_state(vap, IEEE80211_S_ASSOC, -1);
1443 break;
1444 case IWI_AUTH_FAIL:
1445 /*
1446 * These are delivered as an unsolicited deauth
1447 * (e.g. due to inactivity) or in response to an
1448 * associate request.
1449 */
1450 sc->flags &= ~IWI_FLAG_ASSOCIATED;
1451 if (vap->iv_state != IEEE80211_S_RUN) {
1452 DPRINTFN(2, ("Authentication failed\n"));
1453 vap->iv_stats.is_rx_auth_fail++;
1454 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1455 } else {
1456 DPRINTFN(2, ("Deauthenticated\n"));
1457 vap->iv_stats.is_rx_deauth++;
1458 }
1459 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1460 break;
1461 case IWI_AUTH_SENT_1:
1462 case IWI_AUTH_RECV_2:
1463 case IWI_AUTH_SEQ1_PASS:
1464 break;
1465 case IWI_AUTH_SEQ1_FAIL:
1466 DPRINTFN(2, ("Initial authentication handshake failed; "
1467 "you probably need shared key\n"));
1468 vap->iv_stats.is_rx_auth_fail++;
1469 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1470 /* XXX retry shared key when in auto */
1471 break;
1472 default:
1473 device_printf(sc->sc_dev,
1474 "unknown authentication state %u\n", auth->state);
1475 break;
1476 }
1477 break;
1478
1479 case IWI_NOTIF_TYPE_ASSOCIATION:
1480 assoc = (struct iwi_notif_association *)(notif + 1);
1481 switch (assoc->state) {
1482 case IWI_AUTH_SUCCESS:
1483 /* re-association, do nothing */
1484 break;
1485 case IWI_ASSOC_SUCCESS:
1486 DPRINTFN(2, ("Association succeeded\n"));
1487 sc->flags |= IWI_FLAG_ASSOCIATED;
1488 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1489 iwi_checkforqos(vap,
1490 (const struct ieee80211_frame *)(assoc+1),
1491 le16toh(notif->len) - sizeof(*assoc) - 1);
1492 ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
1493 break;
1494 case IWI_ASSOC_INIT:
1495 sc->flags &= ~IWI_FLAG_ASSOCIATED;
1496 switch (sc->fw_state) {
1497 case IWI_FW_ASSOCIATING:
1498 DPRINTFN(2, ("Association failed\n"));
1499 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1500 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1501 break;
1502
1503 case IWI_FW_DISASSOCIATING:
1504 DPRINTFN(2, ("Dissassociated\n"));
1505 IWI_STATE_END(sc, IWI_FW_DISASSOCIATING);
1506 vap->iv_stats.is_rx_disassoc++;
1507 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1508 break;
1509 }
1510 break;
1511 default:
1512 device_printf(sc->sc_dev,
1513 "unknown association state %u\n", assoc->state);
1514 break;
1515 }
1516 break;
1517
1518 case IWI_NOTIF_TYPE_BEACON:
1519 /* XXX check struct length */
1520 beacon = (struct iwi_notif_beacon_state *)(notif + 1);
1521
1522 DPRINTFN(5, ("Beacon state (%u, %u)\n",
1523 beacon->state, le32toh(beacon->number)));
1524
1525 if (beacon->state == IWI_BEACON_MISS) {
1526 /*
1527 * The firmware notifies us of every beacon miss
1528 * so we need to track the count against the
1529 * configured threshold before notifying the
1530 * 802.11 layer.
1531 * XXX try to roam, drop assoc only on much higher count
1532 */
1533 if (le32toh(beacon->number) >= vap->iv_bmissthreshold) {
1534 DPRINTF(("Beacon miss: %u >= %u\n",
1535 le32toh(beacon->number),
1536 vap->iv_bmissthreshold));
1537 vap->iv_stats.is_beacon_miss++;
1538 /*
1539 * It's pointless to notify the 802.11 layer
1540 * as it'll try to send a probe request (which
1541 * we'll discard) and then timeout and drop us
1542 * into scan state. Instead tell the firmware
1543 * to disassociate and then on completion we'll
1544 * kick the state machine to scan.
1545 */
1546 ieee80211_runtask(ic, &sc->sc_disassoctask);
1547 }
1548 }
1549 break;
1550
1551 case IWI_NOTIF_TYPE_CALIBRATION:
1552 case IWI_NOTIF_TYPE_NOISE:
1553 /* XXX handle? */
1554 DPRINTFN(5, ("Notification (%u)\n", notif->type));
1555 break;
1556 case IWI_NOTIF_TYPE_LINK_QUALITY:
1557 iwi_notif_link_quality(sc, notif);
1558 break;
1559
1560 default:
1561 DPRINTF(("unknown notification type %u flags 0x%x len %u\n",
1562 notif->type, notif->flags, le16toh(notif->len)));
1563 break;
1564 }
1565 }
1566
1567 static void
iwi_rx_intr(struct iwi_softc * sc)1568 iwi_rx_intr(struct iwi_softc *sc)
1569 {
1570 struct iwi_rx_data *data;
1571 struct iwi_hdr *hdr;
1572 uint32_t hw;
1573
1574 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX);
1575
1576 for (; sc->rxq.cur != hw;) {
1577 data = &sc->rxq.data[sc->rxq.cur];
1578
1579 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1580 BUS_DMASYNC_POSTREAD);
1581
1582 hdr = mtod(data->m, struct iwi_hdr *);
1583
1584 switch (hdr->type) {
1585 case IWI_HDR_TYPE_FRAME:
1586 iwi_frame_intr(sc, data, sc->rxq.cur,
1587 (struct iwi_frame *)(hdr + 1));
1588 break;
1589
1590 case IWI_HDR_TYPE_NOTIF:
1591 iwi_notification_intr(sc,
1592 (struct iwi_notif *)(hdr + 1));
1593 break;
1594
1595 default:
1596 device_printf(sc->sc_dev, "unknown hdr type %u\n",
1597 hdr->type);
1598 }
1599
1600 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1601
1602 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT;
1603 }
1604
1605 /* tell the firmware what we have processed */
1606 hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1;
1607 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw);
1608 }
1609
1610 static void
iwi_tx_intr(struct iwi_softc * sc,struct iwi_tx_ring * txq)1611 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq)
1612 {
1613 struct iwi_tx_data *data;
1614 uint32_t hw;
1615
1616 hw = CSR_READ_4(sc, txq->csr_ridx);
1617
1618 while (txq->next != hw) {
1619 data = &txq->data[txq->next];
1620 DPRINTFN(15, ("tx done idx=%u\n", txq->next));
1621 bus_dmamap_sync(txq->data_dmat, data->map,
1622 BUS_DMASYNC_POSTWRITE);
1623 bus_dmamap_unload(txq->data_dmat, data->map);
1624 ieee80211_tx_complete(data->ni, data->m, 0);
1625 data->ni = NULL;
1626 data->m = NULL;
1627 txq->queued--;
1628 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT;
1629 }
1630 sc->sc_tx_timer = 0;
1631 if (sc->sc_softled)
1632 iwi_led_event(sc, IWI_LED_TX);
1633 iwi_start(sc);
1634 }
1635
1636 static void
iwi_fatal_error_intr(struct iwi_softc * sc)1637 iwi_fatal_error_intr(struct iwi_softc *sc)
1638 {
1639 struct ieee80211com *ic = &sc->sc_ic;
1640 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1641
1642 device_printf(sc->sc_dev, "firmware error\n");
1643 if (vap != NULL)
1644 ieee80211_cancel_scan(vap);
1645 ieee80211_runtask(ic, &sc->sc_restarttask);
1646
1647 sc->flags &= ~IWI_FLAG_BUSY;
1648 sc->sc_busy_timer = 0;
1649 wakeup(sc);
1650 }
1651
1652 static void
iwi_radio_off_intr(struct iwi_softc * sc)1653 iwi_radio_off_intr(struct iwi_softc *sc)
1654 {
1655
1656 ieee80211_runtask(&sc->sc_ic, &sc->sc_radiofftask);
1657 }
1658
1659 static void
iwi_intr(void * arg)1660 iwi_intr(void *arg)
1661 {
1662 struct iwi_softc *sc = arg;
1663 uint32_t r;
1664 IWI_LOCK_DECL;
1665
1666 IWI_LOCK(sc);
1667
1668 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) {
1669 IWI_UNLOCK(sc);
1670 return;
1671 }
1672
1673 /* acknowledge interrupts */
1674 CSR_WRITE_4(sc, IWI_CSR_INTR, r);
1675
1676 if (r & IWI_INTR_FATAL_ERROR) {
1677 iwi_fatal_error_intr(sc);
1678 goto done;
1679 }
1680
1681 if (r & IWI_INTR_FW_INITED) {
1682 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR)))
1683 wakeup(sc);
1684 }
1685
1686 if (r & IWI_INTR_RADIO_OFF)
1687 iwi_radio_off_intr(sc);
1688
1689 if (r & IWI_INTR_CMD_DONE) {
1690 sc->flags &= ~IWI_FLAG_BUSY;
1691 sc->sc_busy_timer = 0;
1692 wakeup(sc);
1693 }
1694
1695 if (r & IWI_INTR_TX1_DONE)
1696 iwi_tx_intr(sc, &sc->txq[0]);
1697
1698 if (r & IWI_INTR_TX2_DONE)
1699 iwi_tx_intr(sc, &sc->txq[1]);
1700
1701 if (r & IWI_INTR_TX3_DONE)
1702 iwi_tx_intr(sc, &sc->txq[2]);
1703
1704 if (r & IWI_INTR_TX4_DONE)
1705 iwi_tx_intr(sc, &sc->txq[3]);
1706
1707 if (r & IWI_INTR_RX_DONE)
1708 iwi_rx_intr(sc);
1709
1710 if (r & IWI_INTR_PARITY_ERROR) {
1711 /* XXX rate-limit */
1712 device_printf(sc->sc_dev, "parity error\n");
1713 }
1714 done:
1715 IWI_UNLOCK(sc);
1716 }
1717
1718 static int
iwi_cmd(struct iwi_softc * sc,uint8_t type,void * data,uint8_t len)1719 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len)
1720 {
1721 struct iwi_cmd_desc *desc;
1722
1723 IWI_LOCK_ASSERT(sc);
1724
1725 if (sc->flags & IWI_FLAG_BUSY) {
1726 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n",
1727 __func__, type);
1728 return EAGAIN;
1729 }
1730 sc->flags |= IWI_FLAG_BUSY;
1731 sc->sc_busy_timer = 2;
1732
1733 desc = &sc->cmdq.desc[sc->cmdq.cur];
1734
1735 desc->hdr.type = IWI_HDR_TYPE_COMMAND;
1736 desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1737 desc->type = type;
1738 desc->len = len;
1739 memcpy(desc->data, data, len);
1740
1741 bus_dmamap_sync(sc->cmdq.desc_dmat, sc->cmdq.desc_map,
1742 BUS_DMASYNC_PREWRITE);
1743
1744 DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur,
1745 type, len));
1746
1747 sc->cmdq.cur = (sc->cmdq.cur + 1) % IWI_CMD_RING_COUNT;
1748 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
1749
1750 return msleep(sc, &sc->sc_mtx, 0, "iwicmd", hz);
1751 }
1752
1753 static void
iwi_write_ibssnode(struct iwi_softc * sc,const u_int8_t addr[IEEE80211_ADDR_LEN],int entry)1754 iwi_write_ibssnode(struct iwi_softc *sc,
1755 const u_int8_t addr[IEEE80211_ADDR_LEN], int entry)
1756 {
1757 struct iwi_ibssnode node;
1758
1759 /* write node information into NIC memory */
1760 memset(&node, 0, sizeof node);
1761 IEEE80211_ADDR_COPY(node.bssid, addr);
1762
1763 DPRINTF(("%s mac %6D station %u\n", __func__, node.bssid, ":", entry));
1764
1765 CSR_WRITE_REGION_1(sc,
1766 IWI_CSR_NODE_BASE + entry * sizeof node,
1767 (uint8_t *)&node, sizeof node);
1768 }
1769
1770 static int
iwi_tx_start(struct iwi_softc * sc,struct mbuf * m0,struct ieee80211_node * ni,int ac)1771 iwi_tx_start(struct iwi_softc *sc, struct mbuf *m0, struct ieee80211_node *ni,
1772 int ac)
1773 {
1774 struct ieee80211vap *vap = ni->ni_vap;
1775 struct iwi_node *in = (struct iwi_node *)ni;
1776 const struct ieee80211_frame *wh;
1777 struct ieee80211_key *k;
1778 struct iwi_tx_ring *txq = &sc->txq[ac];
1779 struct iwi_tx_data *data;
1780 struct iwi_tx_desc *desc;
1781 struct mbuf *mnew;
1782 bus_dma_segment_t segs[IWI_MAX_NSEG];
1783 int error, nsegs, hdrlen, i;
1784 int ismcast, flags, xflags, staid;
1785
1786 IWI_LOCK_ASSERT(sc);
1787 wh = mtod(m0, const struct ieee80211_frame *);
1788 /* NB: only data frames use this path */
1789 hdrlen = ieee80211_hdrsize(wh);
1790 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1791 flags = xflags = 0;
1792
1793 if (!ismcast)
1794 flags |= IWI_DATA_FLAG_NEED_ACK;
1795 if (vap->iv_flags & IEEE80211_F_SHPREAMBLE)
1796 flags |= IWI_DATA_FLAG_SHPREAMBLE;
1797 if (IEEE80211_QOS_HAS_SEQ(wh)) {
1798 xflags |= IWI_DATA_XFLAG_QOS;
1799 if (ieee80211_wme_vap_ac_is_noack(vap, ac))
1800 flags &= ~IWI_DATA_FLAG_NEED_ACK;
1801 }
1802
1803 /*
1804 * This is only used in IBSS mode where the firmware expect an index
1805 * in a h/w table instead of a destination address.
1806 */
1807 if (vap->iv_opmode == IEEE80211_M_IBSS) {
1808 if (!ismcast) {
1809 if (in->in_station == -1) {
1810 in->in_station = alloc_unr(sc->sc_unr);
1811 if (in->in_station == -1) {
1812 /* h/w table is full */
1813 if_inc_counter(ni->ni_vap->iv_ifp,
1814 IFCOUNTER_OERRORS, 1);
1815 m_freem(m0);
1816 ieee80211_free_node(ni);
1817 return 0;
1818 }
1819 iwi_write_ibssnode(sc,
1820 ni->ni_macaddr, in->in_station);
1821 }
1822 staid = in->in_station;
1823 } else {
1824 /*
1825 * Multicast addresses have no associated node
1826 * so there will be no station entry. We reserve
1827 * entry 0 for one mcast address and use that.
1828 * If there are many being used this will be
1829 * expensive and we'll need to do a better job
1830 * but for now this handles the broadcast case.
1831 */
1832 if (!IEEE80211_ADDR_EQ(wh->i_addr1, sc->sc_mcast)) {
1833 IEEE80211_ADDR_COPY(sc->sc_mcast, wh->i_addr1);
1834 iwi_write_ibssnode(sc, sc->sc_mcast, 0);
1835 }
1836 staid = 0;
1837 }
1838 } else
1839 staid = 0;
1840
1841 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
1842 k = ieee80211_crypto_encap(ni, m0);
1843 if (k == NULL) {
1844 m_freem(m0);
1845 return ENOBUFS;
1846 }
1847
1848 /* packet header may have moved, reset our local pointer */
1849 wh = mtod(m0, struct ieee80211_frame *);
1850 }
1851
1852 if (ieee80211_radiotap_active_vap(vap)) {
1853 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap;
1854
1855 tap->wt_flags = 0;
1856
1857 ieee80211_radiotap_tx(vap, m0);
1858 }
1859
1860 data = &txq->data[txq->cur];
1861 desc = &txq->desc[txq->cur];
1862
1863 /* save and trim IEEE802.11 header */
1864 m_copydata(m0, 0, hdrlen, (caddr_t)&desc->wh);
1865 m_adj(m0, hdrlen);
1866
1867 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, m0, segs,
1868 &nsegs, 0);
1869 if (error != 0 && error != EFBIG) {
1870 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1871 error);
1872 m_freem(m0);
1873 return error;
1874 }
1875 if (error != 0) {
1876 mnew = m_defrag(m0, M_NOWAIT);
1877 if (mnew == NULL) {
1878 device_printf(sc->sc_dev,
1879 "could not defragment mbuf\n");
1880 m_freem(m0);
1881 return ENOBUFS;
1882 }
1883 m0 = mnew;
1884
1885 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map,
1886 m0, segs, &nsegs, 0);
1887 if (error != 0) {
1888 device_printf(sc->sc_dev,
1889 "could not map mbuf (error %d)\n", error);
1890 m_freem(m0);
1891 return error;
1892 }
1893 }
1894
1895 data->m = m0;
1896 data->ni = ni;
1897
1898 desc->hdr.type = IWI_HDR_TYPE_DATA;
1899 desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1900 desc->station = staid;
1901 desc->cmd = IWI_DATA_CMD_TX;
1902 desc->len = htole16(m0->m_pkthdr.len);
1903 desc->flags = flags;
1904 desc->xflags = xflags;
1905
1906 #if 0
1907 if (vap->iv_flags & IEEE80211_F_PRIVACY)
1908 desc->wep_txkey = vap->iv_def_txkey;
1909 else
1910 #endif
1911 desc->flags |= IWI_DATA_FLAG_NO_WEP;
1912
1913 desc->nseg = htole32(nsegs);
1914 for (i = 0; i < nsegs; i++) {
1915 desc->seg_addr[i] = htole32(segs[i].ds_addr);
1916 desc->seg_len[i] = htole16(segs[i].ds_len);
1917 }
1918
1919 bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1920 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE);
1921
1922 DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n",
1923 ac, txq->cur, le16toh(desc->len), nsegs));
1924
1925 txq->queued++;
1926 txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT;
1927 CSR_WRITE_4(sc, txq->csr_widx, txq->cur);
1928
1929 return 0;
1930 }
1931
1932 static int
iwi_raw_xmit(struct ieee80211_node * ni,struct mbuf * m,const struct ieee80211_bpf_params * params)1933 iwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1934 const struct ieee80211_bpf_params *params)
1935 {
1936 /* no support; just discard */
1937 m_freem(m);
1938 ieee80211_free_node(ni);
1939 return 0;
1940 }
1941
1942 static int
iwi_transmit(struct ieee80211com * ic,struct mbuf * m)1943 iwi_transmit(struct ieee80211com *ic, struct mbuf *m)
1944 {
1945 struct iwi_softc *sc = ic->ic_softc;
1946 int error;
1947 IWI_LOCK_DECL;
1948
1949 IWI_LOCK(sc);
1950 if (!sc->sc_running) {
1951 IWI_UNLOCK(sc);
1952 return (ENXIO);
1953 }
1954 error = mbufq_enqueue(&sc->sc_snd, m);
1955 if (error) {
1956 IWI_UNLOCK(sc);
1957 return (error);
1958 }
1959 iwi_start(sc);
1960 IWI_UNLOCK(sc);
1961 return (0);
1962 }
1963
1964 static void
iwi_start(struct iwi_softc * sc)1965 iwi_start(struct iwi_softc *sc)
1966 {
1967 struct mbuf *m;
1968 struct ieee80211_node *ni;
1969 int ac;
1970
1971 IWI_LOCK_ASSERT(sc);
1972
1973 while ((m = mbufq_dequeue(&sc->sc_snd)) != NULL) {
1974 ac = M_WME_GETAC(m);
1975 if (sc->txq[ac].queued > IWI_TX_RING_COUNT - 8) {
1976 /* there is no place left in this ring; tail drop */
1977 /* XXX tail drop */
1978 mbufq_prepend(&sc->sc_snd, m);
1979 break;
1980 }
1981 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1982 if (iwi_tx_start(sc, m, ni, ac) != 0) {
1983 if_inc_counter(ni->ni_vap->iv_ifp,
1984 IFCOUNTER_OERRORS, 1);
1985 ieee80211_free_node(ni);
1986 break;
1987 }
1988 sc->sc_tx_timer = 5;
1989 }
1990 }
1991
1992 static void
iwi_watchdog(void * arg)1993 iwi_watchdog(void *arg)
1994 {
1995 struct iwi_softc *sc = arg;
1996 struct ieee80211com *ic = &sc->sc_ic;
1997
1998 IWI_LOCK_ASSERT(sc);
1999
2000 if (sc->sc_tx_timer > 0) {
2001 if (--sc->sc_tx_timer == 0) {
2002 device_printf(sc->sc_dev, "device timeout\n");
2003 counter_u64_add(ic->ic_oerrors, 1);
2004 ieee80211_runtask(ic, &sc->sc_restarttask);
2005 }
2006 }
2007 if (sc->sc_state_timer > 0) {
2008 if (--sc->sc_state_timer == 0) {
2009 device_printf(sc->sc_dev,
2010 "firmware stuck in state %d, resetting\n",
2011 sc->fw_state);
2012 if (sc->fw_state == IWI_FW_SCANNING)
2013 ieee80211_cancel_scan(TAILQ_FIRST(&ic->ic_vaps));
2014 ieee80211_runtask(ic, &sc->sc_restarttask);
2015 sc->sc_state_timer = 3;
2016 }
2017 }
2018 if (sc->sc_busy_timer > 0) {
2019 if (--sc->sc_busy_timer == 0) {
2020 device_printf(sc->sc_dev,
2021 "firmware command timeout, resetting\n");
2022 ieee80211_runtask(ic, &sc->sc_restarttask);
2023 }
2024 }
2025 callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
2026 }
2027
2028 static void
iwi_parent(struct ieee80211com * ic)2029 iwi_parent(struct ieee80211com *ic)
2030 {
2031 struct iwi_softc *sc = ic->ic_softc;
2032 int startall = 0;
2033 IWI_LOCK_DECL;
2034
2035 IWI_LOCK(sc);
2036 if (ic->ic_nrunning > 0) {
2037 if (!sc->sc_running) {
2038 iwi_init_locked(sc);
2039 startall = 1;
2040 }
2041 } else if (sc->sc_running)
2042 iwi_stop_locked(sc);
2043 IWI_UNLOCK(sc);
2044 if (startall)
2045 ieee80211_start_all(ic);
2046 }
2047
2048 static int
iwi_ioctl(struct ieee80211com * ic,u_long cmd,void * data)2049 iwi_ioctl(struct ieee80211com *ic, u_long cmd, void *data)
2050 {
2051 struct ifreq *ifr = data;
2052 struct iwi_softc *sc = ic->ic_softc;
2053 int error;
2054 IWI_LOCK_DECL;
2055
2056 IWI_LOCK(sc);
2057 switch (cmd) {
2058 case SIOCGIWISTATS:
2059 /* XXX validate permissions/memory/etc? */
2060 error = copyout(&sc->sc_linkqual, ifr_data_get_ptr(ifr),
2061 sizeof(struct iwi_notif_link_quality));
2062 break;
2063 case SIOCZIWISTATS:
2064 memset(&sc->sc_linkqual, 0,
2065 sizeof(struct iwi_notif_link_quality));
2066 error = 0;
2067 break;
2068 default:
2069 error = ENOTTY;
2070 break;
2071 }
2072 IWI_UNLOCK(sc);
2073
2074 return (error);
2075 }
2076
2077 static void
iwi_stop_master(struct iwi_softc * sc)2078 iwi_stop_master(struct iwi_softc *sc)
2079 {
2080 uint32_t tmp;
2081 int ntries;
2082
2083 /* disable interrupts */
2084 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0);
2085
2086 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER);
2087 for (ntries = 0; ntries < 5; ntries++) {
2088 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2089 break;
2090 DELAY(10);
2091 }
2092 if (ntries == 5)
2093 device_printf(sc->sc_dev, "timeout waiting for master\n");
2094
2095 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2096 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET);
2097
2098 sc->flags &= ~IWI_FLAG_FW_INITED;
2099 }
2100
2101 static int
iwi_reset(struct iwi_softc * sc)2102 iwi_reset(struct iwi_softc *sc)
2103 {
2104 uint32_t tmp;
2105 int i, ntries;
2106
2107 iwi_stop_master(sc);
2108
2109 tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2110 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2111
2112 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST);
2113
2114 /* wait for clock stabilization */
2115 for (ntries = 0; ntries < 1000; ntries++) {
2116 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY)
2117 break;
2118 DELAY(200);
2119 }
2120 if (ntries == 1000) {
2121 device_printf(sc->sc_dev,
2122 "timeout waiting for clock stabilization\n");
2123 return EIO;
2124 }
2125
2126 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2127 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SOFT_RESET);
2128
2129 DELAY(10);
2130
2131 tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2132 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2133
2134 /* clear NIC memory */
2135 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0);
2136 for (i = 0; i < 0xc000; i++)
2137 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2138
2139 return 0;
2140 }
2141
2142 static const struct iwi_firmware_ohdr *
iwi_setup_ofw(struct iwi_softc * sc,struct iwi_fw * fw)2143 iwi_setup_ofw(struct iwi_softc *sc, struct iwi_fw *fw)
2144 {
2145 const struct firmware *fp = fw->fp;
2146 const struct iwi_firmware_ohdr *hdr;
2147
2148 if (fp->datasize < sizeof (struct iwi_firmware_ohdr)) {
2149 device_printf(sc->sc_dev, "image '%s' too small\n", fp->name);
2150 return NULL;
2151 }
2152 hdr = (const struct iwi_firmware_ohdr *)fp->data;
2153 if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) ||
2154 (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) {
2155 device_printf(sc->sc_dev, "version for '%s' %d.%d != %d.%d\n",
2156 fp->name, IWI_FW_GET_MAJOR(le32toh(hdr->version)),
2157 IWI_FW_GET_MINOR(le32toh(hdr->version)), IWI_FW_REQ_MAJOR,
2158 IWI_FW_REQ_MINOR);
2159 return NULL;
2160 }
2161 fw->data = ((const char *) fp->data) + sizeof(struct iwi_firmware_ohdr);
2162 fw->size = fp->datasize - sizeof(struct iwi_firmware_ohdr);
2163 fw->name = fp->name;
2164 return hdr;
2165 }
2166
2167 static const struct iwi_firmware_ohdr *
iwi_setup_oucode(struct iwi_softc * sc,struct iwi_fw * fw)2168 iwi_setup_oucode(struct iwi_softc *sc, struct iwi_fw *fw)
2169 {
2170 const struct iwi_firmware_ohdr *hdr;
2171
2172 hdr = iwi_setup_ofw(sc, fw);
2173 if (hdr != NULL && le32toh(hdr->mode) != IWI_FW_MODE_UCODE) {
2174 device_printf(sc->sc_dev, "%s is not a ucode image\n",
2175 fw->name);
2176 hdr = NULL;
2177 }
2178 return hdr;
2179 }
2180
2181 static void
iwi_getfw(struct iwi_fw * fw,const char * fwname,struct iwi_fw * uc,const char * ucname)2182 iwi_getfw(struct iwi_fw *fw, const char *fwname,
2183 struct iwi_fw *uc, const char *ucname)
2184 {
2185 if (fw->fp == NULL)
2186 fw->fp = firmware_get(fwname);
2187 /* NB: pre-3.0 ucode is packaged separately */
2188 if (uc->fp == NULL && fw->fp != NULL && fw->fp->version < 300)
2189 uc->fp = firmware_get(ucname);
2190 }
2191
2192 /*
2193 * Get the required firmware images if not already loaded.
2194 * Note that we hold firmware images so long as the device
2195 * is marked up in case we need to reload them on device init.
2196 * This is necessary because we re-init the device sometimes
2197 * from a context where we cannot read from the filesystem
2198 * (e.g. from the taskqueue thread when rfkill is re-enabled).
2199 * XXX return 0 on success, 1 on error.
2200 *
2201 * NB: the order of get'ing and put'ing images here is
2202 * intentional to support handling firmware images bundled
2203 * by operating mode and/or all together in one file with
2204 * the boot firmware as "master".
2205 */
2206 static int
iwi_get_firmware(struct iwi_softc * sc,enum ieee80211_opmode opmode)2207 iwi_get_firmware(struct iwi_softc *sc, enum ieee80211_opmode opmode)
2208 {
2209 const struct iwi_firmware_hdr *hdr;
2210 const struct firmware *fp;
2211
2212 /* invalidate cached firmware on mode change */
2213 if (sc->fw_mode != opmode)
2214 iwi_put_firmware(sc);
2215
2216 switch (opmode) {
2217 case IEEE80211_M_STA:
2218 iwi_getfw(&sc->fw_fw, "iwi_bss", &sc->fw_uc, "iwi_ucode_bss");
2219 break;
2220 case IEEE80211_M_IBSS:
2221 iwi_getfw(&sc->fw_fw, "iwi_ibss", &sc->fw_uc, "iwi_ucode_ibss");
2222 break;
2223 case IEEE80211_M_MONITOR:
2224 iwi_getfw(&sc->fw_fw, "iwi_monitor",
2225 &sc->fw_uc, "iwi_ucode_monitor");
2226 break;
2227 default:
2228 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode);
2229 return EINVAL;
2230 }
2231 fp = sc->fw_fw.fp;
2232 if (fp == NULL) {
2233 device_printf(sc->sc_dev, "could not load firmware\n");
2234 goto bad;
2235 }
2236 if (fp->version < 300) {
2237 /*
2238 * Firmware prior to 3.0 was packaged as separate
2239 * boot, firmware, and ucode images. Verify the
2240 * ucode image was read in, retrieve the boot image
2241 * if needed, and check version stamps for consistency.
2242 * The version stamps in the data are also checked
2243 * above; this is a bit paranoid but is a cheap
2244 * safeguard against mis-packaging.
2245 */
2246 if (sc->fw_uc.fp == NULL) {
2247 device_printf(sc->sc_dev, "could not load ucode\n");
2248 goto bad;
2249 }
2250 if (sc->fw_boot.fp == NULL) {
2251 sc->fw_boot.fp = firmware_get("iwi_boot");
2252 if (sc->fw_boot.fp == NULL) {
2253 device_printf(sc->sc_dev,
2254 "could not load boot firmware\n");
2255 goto bad;
2256 }
2257 }
2258 if (sc->fw_boot.fp->version != sc->fw_fw.fp->version ||
2259 sc->fw_boot.fp->version != sc->fw_uc.fp->version) {
2260 device_printf(sc->sc_dev,
2261 "firmware version mismatch: "
2262 "'%s' is %d, '%s' is %d, '%s' is %d\n",
2263 sc->fw_boot.fp->name, sc->fw_boot.fp->version,
2264 sc->fw_uc.fp->name, sc->fw_uc.fp->version,
2265 sc->fw_fw.fp->name, sc->fw_fw.fp->version
2266 );
2267 goto bad;
2268 }
2269 /*
2270 * Check and setup each image.
2271 */
2272 if (iwi_setup_oucode(sc, &sc->fw_uc) == NULL ||
2273 iwi_setup_ofw(sc, &sc->fw_boot) == NULL ||
2274 iwi_setup_ofw(sc, &sc->fw_fw) == NULL)
2275 goto bad;
2276 } else {
2277 /*
2278 * Check and setup combined image.
2279 */
2280 if (fp->datasize < sizeof(struct iwi_firmware_hdr)) {
2281 device_printf(sc->sc_dev, "image '%s' too small\n",
2282 fp->name);
2283 goto bad;
2284 }
2285 hdr = (const struct iwi_firmware_hdr *)fp->data;
2286 if (fp->datasize < sizeof(*hdr) + le32toh(hdr->bsize) + le32toh(hdr->usize)
2287 + le32toh(hdr->fsize)) {
2288 device_printf(sc->sc_dev, "image '%s' too small (2)\n",
2289 fp->name);
2290 goto bad;
2291 }
2292 sc->fw_boot.data = ((const char *) fp->data) + sizeof(*hdr);
2293 sc->fw_boot.size = le32toh(hdr->bsize);
2294 sc->fw_boot.name = fp->name;
2295 sc->fw_uc.data = sc->fw_boot.data + sc->fw_boot.size;
2296 sc->fw_uc.size = le32toh(hdr->usize);
2297 sc->fw_uc.name = fp->name;
2298 sc->fw_fw.data = sc->fw_uc.data + sc->fw_uc.size;
2299 sc->fw_fw.size = le32toh(hdr->fsize);
2300 sc->fw_fw.name = fp->name;
2301 }
2302 #if 0
2303 device_printf(sc->sc_dev, "boot %d ucode %d fw %d bytes\n",
2304 sc->fw_boot.size, sc->fw_uc.size, sc->fw_fw.size);
2305 #endif
2306
2307 sc->fw_mode = opmode;
2308 return 0;
2309 bad:
2310 iwi_put_firmware(sc);
2311 return 1;
2312 }
2313
2314 static void
iwi_put_fw(struct iwi_fw * fw)2315 iwi_put_fw(struct iwi_fw *fw)
2316 {
2317 if (fw->fp != NULL) {
2318 firmware_put(fw->fp, FIRMWARE_UNLOAD);
2319 fw->fp = NULL;
2320 }
2321 fw->data = NULL;
2322 fw->size = 0;
2323 fw->name = NULL;
2324 }
2325
2326 /*
2327 * Release any cached firmware images.
2328 */
2329 static void
iwi_put_firmware(struct iwi_softc * sc)2330 iwi_put_firmware(struct iwi_softc *sc)
2331 {
2332 iwi_put_fw(&sc->fw_uc);
2333 iwi_put_fw(&sc->fw_fw);
2334 iwi_put_fw(&sc->fw_boot);
2335 }
2336
2337 static int
iwi_load_ucode(struct iwi_softc * sc,const struct iwi_fw * fw)2338 iwi_load_ucode(struct iwi_softc *sc, const struct iwi_fw *fw)
2339 {
2340 uint32_t tmp;
2341 const uint16_t *w;
2342 const char *uc = fw->data;
2343 size_t size = fw->size;
2344 int i, ntries, error;
2345
2346 IWI_LOCK_ASSERT(sc);
2347 error = 0;
2348 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
2349 IWI_RST_STOP_MASTER);
2350 for (ntries = 0; ntries < 5; ntries++) {
2351 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2352 break;
2353 DELAY(10);
2354 }
2355 if (ntries == 5) {
2356 device_printf(sc->sc_dev, "timeout waiting for master\n");
2357 error = EIO;
2358 goto fail;
2359 }
2360
2361 MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
2362 DELAY(5000);
2363
2364 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2365 tmp &= ~IWI_RST_PRINCETON_RESET;
2366 CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2367
2368 DELAY(5000);
2369 MEM_WRITE_4(sc, 0x3000e0, 0);
2370 DELAY(1000);
2371 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 1);
2372 DELAY(1000);
2373 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 0);
2374 DELAY(1000);
2375 MEM_WRITE_1(sc, 0x200000, 0x00);
2376 MEM_WRITE_1(sc, 0x200000, 0x40);
2377 DELAY(1000);
2378
2379 /* write microcode into adapter memory */
2380 for (w = (const uint16_t *)uc; size > 0; w++, size -= 2)
2381 MEM_WRITE_2(sc, 0x200010, htole16(*w));
2382
2383 MEM_WRITE_1(sc, 0x200000, 0x00);
2384 MEM_WRITE_1(sc, 0x200000, 0x80);
2385
2386 /* wait until we get an answer */
2387 for (ntries = 0; ntries < 100; ntries++) {
2388 if (MEM_READ_1(sc, 0x200000) & 1)
2389 break;
2390 DELAY(100);
2391 }
2392 if (ntries == 100) {
2393 device_printf(sc->sc_dev,
2394 "timeout waiting for ucode to initialize\n");
2395 error = EIO;
2396 goto fail;
2397 }
2398
2399 /* read the answer or the firmware will not initialize properly */
2400 for (i = 0; i < 7; i++)
2401 MEM_READ_4(sc, 0x200004);
2402
2403 MEM_WRITE_1(sc, 0x200000, 0x00);
2404
2405 fail:
2406 return error;
2407 }
2408
2409 /* macro to handle unaligned little endian data in firmware image */
2410 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2411
2412 static int
iwi_load_firmware(struct iwi_softc * sc,const struct iwi_fw * fw)2413 iwi_load_firmware(struct iwi_softc *sc, const struct iwi_fw *fw)
2414 {
2415 u_char *p, *end;
2416 uint32_t sentinel, ctl, src, dst, sum, len, mlen, tmp;
2417 int ntries, error;
2418
2419 IWI_LOCK_ASSERT(sc);
2420
2421 /* copy firmware image to DMA memory */
2422 memcpy(sc->fw_virtaddr, fw->data, fw->size);
2423
2424 /* make sure the adapter will get up-to-date values */
2425 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_PREWRITE);
2426
2427 /* tell the adapter where the command blocks are stored */
2428 MEM_WRITE_4(sc, 0x3000a0, 0x27000);
2429
2430 /*
2431 * Store command blocks into adapter's internal memory using register
2432 * indirections. The adapter will read the firmware image through DMA
2433 * using information stored in command blocks.
2434 */
2435 src = sc->fw_physaddr;
2436 p = sc->fw_virtaddr;
2437 end = p + fw->size;
2438 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000);
2439
2440 while (p < end) {
2441 dst = GETLE32(p); p += 4; src += 4;
2442 len = GETLE32(p); p += 4; src += 4;
2443 p += len;
2444
2445 while (len > 0) {
2446 mlen = min(len, IWI_CB_MAXDATALEN);
2447
2448 ctl = IWI_CB_DEFAULT_CTL | mlen;
2449 sum = ctl ^ src ^ dst;
2450
2451 /* write a command block */
2452 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl);
2453 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src);
2454 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst);
2455 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum);
2456
2457 src += mlen;
2458 dst += mlen;
2459 len -= mlen;
2460 }
2461 }
2462
2463 /* write a fictive final command block (sentinel) */
2464 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR);
2465 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2466
2467 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2468 tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER);
2469 CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2470
2471 /* tell the adapter to start processing command blocks */
2472 MEM_WRITE_4(sc, 0x3000a4, 0x540100);
2473
2474 /* wait until the adapter reaches the sentinel */
2475 for (ntries = 0; ntries < 400; ntries++) {
2476 if (MEM_READ_4(sc, 0x3000d0) >= sentinel)
2477 break;
2478 DELAY(100);
2479 }
2480 /* sync dma, just in case */
2481 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_POSTWRITE);
2482 if (ntries == 400) {
2483 device_printf(sc->sc_dev,
2484 "timeout processing command blocks for %s firmware\n",
2485 fw->name);
2486 return EIO;
2487 }
2488
2489 /* we're done with command blocks processing */
2490 MEM_WRITE_4(sc, 0x3000a4, 0x540c00);
2491
2492 /* allow interrupts so we know when the firmware is ready */
2493 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK);
2494
2495 /* tell the adapter to initialize the firmware */
2496 CSR_WRITE_4(sc, IWI_CSR_RST, 0);
2497
2498 tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2499 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY);
2500
2501 /* wait at most one second for firmware initialization to complete */
2502 if ((error = msleep(sc, &sc->sc_mtx, 0, "iwiinit", hz)) != 0) {
2503 device_printf(sc->sc_dev, "timeout waiting for %s firmware "
2504 "initialization to complete\n", fw->name);
2505 }
2506
2507 return error;
2508 }
2509
2510 static int
iwi_setpowermode(struct iwi_softc * sc,struct ieee80211vap * vap)2511 iwi_setpowermode(struct iwi_softc *sc, struct ieee80211vap *vap)
2512 {
2513 uint32_t data;
2514
2515 if (vap->iv_flags & IEEE80211_F_PMGTON) {
2516 /* XXX set more fine-grained operation */
2517 data = htole32(IWI_POWER_MODE_MAX);
2518 } else
2519 data = htole32(IWI_POWER_MODE_CAM);
2520
2521 DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2522 return iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data);
2523 }
2524
2525 static int
iwi_setwepkeys(struct iwi_softc * sc,struct ieee80211vap * vap)2526 iwi_setwepkeys(struct iwi_softc *sc, struct ieee80211vap *vap)
2527 {
2528 struct iwi_wep_key wepkey;
2529 struct ieee80211_key *wk;
2530 int error, i;
2531
2532 for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2533 wk = &vap->iv_nw_keys[i];
2534
2535 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY;
2536 wepkey.idx = i;
2537 wepkey.len = wk->wk_keylen;
2538 memset(wepkey.key, 0, sizeof wepkey.key);
2539 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2540 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2541 wepkey.len));
2542 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey,
2543 sizeof wepkey);
2544 if (error != 0)
2545 return error;
2546 }
2547 return 0;
2548 }
2549
2550 static int
iwi_set_rateset(struct iwi_softc * sc,const struct ieee80211_rateset * net_rs,int mode,int type)2551 iwi_set_rateset(struct iwi_softc *sc, const struct ieee80211_rateset *net_rs,
2552 int mode, int type)
2553 {
2554 struct iwi_rateset rs;
2555
2556 memset(&rs, 0, sizeof(rs));
2557 rs.mode = mode;
2558 rs.type = type;
2559 rs.nrates = net_rs->rs_nrates;
2560 if (rs.nrates > nitems(rs.rates)) {
2561 DPRINTF(("Truncating negotiated rate set from %u\n",
2562 rs.nrates));
2563 rs.nrates = nitems(rs.rates);
2564 }
2565 memcpy(rs.rates, net_rs->rs_rates, rs.nrates);
2566 DPRINTF(("Setting .11%c%s %s rates (%u)\n",
2567 mode == IWI_MODE_11A ? 'a' : 'b',
2568 mode == IWI_MODE_11G ? "g" : "",
2569 type == IWI_RATESET_TYPE_SUPPORTED ? "supported" : "negotiated",
2570 rs.nrates));
2571
2572 return (iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof(rs)));
2573 }
2574
2575 static int
iwi_config(struct iwi_softc * sc)2576 iwi_config(struct iwi_softc *sc)
2577 {
2578 struct ieee80211com *ic = &sc->sc_ic;
2579 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
2580 struct iwi_configuration config;
2581 struct iwi_txpower power;
2582 uint8_t *macaddr;
2583 uint32_t data;
2584 int error, i;
2585
2586 IWI_LOCK_ASSERT(sc);
2587
2588 macaddr = vap ? vap->iv_myaddr : ic->ic_macaddr;
2589 DPRINTF(("Setting MAC address to %6D\n", macaddr, ":"));
2590 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, macaddr,
2591 IEEE80211_ADDR_LEN);
2592 if (error != 0)
2593 return error;
2594
2595 memset(&config, 0, sizeof config);
2596 config.bluetooth_coexistence = sc->bluetooth;
2597 config.silence_threshold = 0x1e;
2598 config.antenna = sc->antenna;
2599 config.multicast_enabled = 1;
2600 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2601 config.disable_unicast_decryption = 1;
2602 config.disable_multicast_decryption = 1;
2603 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2604 config.allow_invalid_frames = 1;
2605 config.allow_beacon_and_probe_resp = 1;
2606 config.allow_mgt = 1;
2607 }
2608 DPRINTF(("Configuring adapter\n"));
2609 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2610 if (error != 0)
2611 return error;
2612 if (ic->ic_opmode == IEEE80211_M_IBSS) {
2613 power.mode = IWI_MODE_11B;
2614 power.nchan = 11;
2615 for (i = 0; i < 11; i++) {
2616 power.chan[i].chan = i + 1;
2617 power.chan[i].power = IWI_TXPOWER_MAX;
2618 }
2619 DPRINTF(("Setting .11b channels tx power\n"));
2620 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2621 if (error != 0)
2622 return error;
2623
2624 power.mode = IWI_MODE_11G;
2625 DPRINTF(("Setting .11g channels tx power\n"));
2626 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2627 if (error != 0)
2628 return error;
2629 }
2630
2631 error = iwi_set_rateset(sc, &ic->ic_sup_rates[IEEE80211_MODE_11G],
2632 IWI_MODE_11G, IWI_RATESET_TYPE_SUPPORTED);
2633 if (error != 0)
2634 return error;
2635
2636 error = iwi_set_rateset(sc, &ic->ic_sup_rates[IEEE80211_MODE_11A],
2637 IWI_MODE_11A, IWI_RATESET_TYPE_SUPPORTED);
2638 if (error != 0)
2639 return error;
2640
2641 data = htole32(arc4random());
2642 DPRINTF(("Setting initialization vector to %u\n", le32toh(data)));
2643 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data);
2644 if (error != 0)
2645 return error;
2646
2647 /* enable adapter */
2648 DPRINTF(("Enabling adapter\n"));
2649 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0);
2650 }
2651
2652 static __inline void
set_scan_type(struct iwi_scan_ext * scan,int ix,int scan_type)2653 set_scan_type(struct iwi_scan_ext *scan, int ix, int scan_type)
2654 {
2655 uint8_t *st = &scan->scan_type[ix / 2];
2656 if (ix % 2)
2657 *st = (*st & 0xf0) | ((scan_type & 0xf) << 0);
2658 else
2659 *st = (*st & 0x0f) | ((scan_type & 0xf) << 4);
2660 }
2661
2662 static int
scan_type(const struct ieee80211_scan_state * ss,const struct ieee80211_channel * chan)2663 scan_type(const struct ieee80211_scan_state *ss,
2664 const struct ieee80211_channel *chan)
2665 {
2666 /* We can only set one essid for a directed scan */
2667 if (ss->ss_nssid != 0)
2668 return IWI_SCAN_TYPE_BDIRECTED;
2669 if ((ss->ss_flags & IEEE80211_SCAN_ACTIVE) &&
2670 (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0)
2671 return IWI_SCAN_TYPE_BROADCAST;
2672 return IWI_SCAN_TYPE_PASSIVE;
2673 }
2674
2675 static __inline int
scan_band(const struct ieee80211_channel * c)2676 scan_band(const struct ieee80211_channel *c)
2677 {
2678 return IEEE80211_IS_CHAN_5GHZ(c) ? IWI_CHAN_5GHZ : IWI_CHAN_2GHZ;
2679 }
2680
2681 static void
iwi_monitor_scan(void * arg,int npending)2682 iwi_monitor_scan(void *arg, int npending)
2683 {
2684 struct iwi_softc *sc = arg;
2685 IWI_LOCK_DECL;
2686
2687 IWI_LOCK(sc);
2688 (void) iwi_scanchan(sc, 2000, 0);
2689 IWI_UNLOCK(sc);
2690 }
2691
2692 /*
2693 * Start a scan on the current channel or all channels.
2694 */
2695 static int
iwi_scanchan(struct iwi_softc * sc,unsigned long maxdwell,int allchan)2696 iwi_scanchan(struct iwi_softc *sc, unsigned long maxdwell, int allchan)
2697 {
2698 struct ieee80211com *ic = &sc->sc_ic;
2699 struct ieee80211_channel *chan;
2700 struct ieee80211_scan_state *ss;
2701 struct iwi_scan_ext scan;
2702 int error = 0;
2703
2704 IWI_LOCK_ASSERT(sc);
2705 if (sc->fw_state == IWI_FW_SCANNING) {
2706 /*
2707 * This should not happen as we only trigger scan_next after
2708 * completion
2709 */
2710 DPRINTF(("%s: called too early - still scanning\n", __func__));
2711 return (EBUSY);
2712 }
2713 IWI_STATE_BEGIN(sc, IWI_FW_SCANNING);
2714
2715 ss = ic->ic_scan;
2716
2717 memset(&scan, 0, sizeof scan);
2718 scan.full_scan_index = htole32(++sc->sc_scangen);
2719 scan.dwell_time[IWI_SCAN_TYPE_PASSIVE] = htole16(maxdwell);
2720 if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) {
2721 /*
2722 * Use very short dwell times for when we send probe request
2723 * frames. Without this bg scans hang. Ideally this should
2724 * be handled with early-termination as done by net80211 but
2725 * that's not feasible (aborting a scan is problematic).
2726 */
2727 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(30);
2728 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(30);
2729 } else {
2730 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(maxdwell);
2731 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(maxdwell);
2732 }
2733
2734 /* We can only set one essid for a directed scan */
2735 if (ss->ss_nssid != 0) {
2736 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ss->ss_ssid[0].ssid,
2737 ss->ss_ssid[0].len);
2738 if (error)
2739 return (error);
2740 }
2741
2742 if (allchan) {
2743 int i, next, band, b, bstart;
2744 /*
2745 * Convert scan list to run-length encoded channel list
2746 * the firmware requires (preserving the order setup by
2747 * net80211). The first entry in each run specifies the
2748 * band and the count of items in the run.
2749 */
2750 next = 0; /* next open slot */
2751 bstart = 0; /* NB: not needed, silence compiler */
2752 band = -1; /* NB: impossible value */
2753 KASSERT(ss->ss_last > 0, ("no channels"));
2754 for (i = 0; i < ss->ss_last; i++) {
2755 chan = ss->ss_chans[i];
2756 b = scan_band(chan);
2757 if (b != band) {
2758 if (band != -1)
2759 scan.channels[bstart] =
2760 (next - bstart) | band;
2761 /* NB: this allocates a slot for the run-len */
2762 band = b, bstart = next++;
2763 }
2764 if (next >= IWI_SCAN_CHANNELS) {
2765 DPRINTF(("truncating scan list\n"));
2766 break;
2767 }
2768 scan.channels[next] = ieee80211_chan2ieee(ic, chan);
2769 set_scan_type(&scan, next, scan_type(ss, chan));
2770 next++;
2771 }
2772 scan.channels[bstart] = (next - bstart) | band;
2773 } else {
2774 /* Scan the current channel only */
2775 chan = ic->ic_curchan;
2776 scan.channels[0] = 1 | scan_band(chan);
2777 scan.channels[1] = ieee80211_chan2ieee(ic, chan);
2778 set_scan_type(&scan, 1, scan_type(ss, chan));
2779 }
2780 #ifdef IWI_DEBUG
2781 if (iwi_debug > 0) {
2782 static const char *scantype[8] =
2783 { "PSTOP", "PASV", "DIR", "BCAST", "BDIR", "5", "6", "7" };
2784 int i;
2785 printf("Scan request: index %u dwell %d/%d/%d\n"
2786 , le32toh(scan.full_scan_index)
2787 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_PASSIVE])
2788 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BROADCAST])
2789 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED])
2790 );
2791 i = 0;
2792 do {
2793 int run = scan.channels[i];
2794 if (run == 0)
2795 break;
2796 printf("Scan %d %s channels:", run & 0x3f,
2797 run & IWI_CHAN_2GHZ ? "2.4GHz" : "5GHz");
2798 for (run &= 0x3f, i++; run > 0; run--, i++) {
2799 uint8_t type = scan.scan_type[i/2];
2800 printf(" %u/%s", scan.channels[i],
2801 scantype[(i & 1 ? type : type>>4) & 7]);
2802 }
2803 printf("\n");
2804 } while (i < IWI_SCAN_CHANNELS);
2805 }
2806 #endif
2807
2808 return (iwi_cmd(sc, IWI_CMD_SCAN_EXT, &scan, sizeof scan));
2809 }
2810
2811 static int
iwi_set_sensitivity(struct iwi_softc * sc,int8_t rssi_dbm)2812 iwi_set_sensitivity(struct iwi_softc *sc, int8_t rssi_dbm)
2813 {
2814 struct iwi_sensitivity sens;
2815
2816 DPRINTF(("Setting sensitivity to %d\n", rssi_dbm));
2817
2818 memset(&sens, 0, sizeof sens);
2819 sens.rssi = htole16(rssi_dbm);
2820 return iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &sens, sizeof sens);
2821 }
2822
2823 static int
iwi_auth_and_assoc(struct iwi_softc * sc,struct ieee80211vap * vap)2824 iwi_auth_and_assoc(struct iwi_softc *sc, struct ieee80211vap *vap)
2825 {
2826 struct ieee80211com *ic = vap->iv_ic;
2827 struct ifnet *ifp = vap->iv_ifp;
2828 struct ieee80211_node *ni;
2829 struct iwi_configuration config;
2830 struct iwi_associate *assoc = &sc->assoc;
2831 uint16_t capinfo;
2832 uint32_t data;
2833 int error, mode;
2834
2835 IWI_LOCK_ASSERT(sc);
2836
2837 if (sc->flags & IWI_FLAG_ASSOCIATED) {
2838 DPRINTF(("Already associated\n"));
2839 return (-1);
2840 }
2841
2842 ni = ieee80211_ref_node(vap->iv_bss);
2843
2844 IWI_STATE_BEGIN(sc, IWI_FW_ASSOCIATING);
2845 error = 0;
2846 mode = 0;
2847
2848 if (IEEE80211_IS_CHAN_A(ic->ic_curchan))
2849 mode = IWI_MODE_11A;
2850 else if (IEEE80211_IS_CHAN_G(ic->ic_curchan))
2851 mode = IWI_MODE_11G;
2852 if (IEEE80211_IS_CHAN_B(ic->ic_curchan))
2853 mode = IWI_MODE_11B;
2854
2855 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2856 memset(&config, 0, sizeof config);
2857 config.bluetooth_coexistence = sc->bluetooth;
2858 config.antenna = sc->antenna;
2859 config.multicast_enabled = 1;
2860 if (mode == IWI_MODE_11G)
2861 config.use_protection = 1;
2862 config.answer_pbreq =
2863 (vap->iv_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2864 config.disable_unicast_decryption = 1;
2865 config.disable_multicast_decryption = 1;
2866 DPRINTF(("Configuring adapter\n"));
2867 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2868 if (error != 0)
2869 goto done;
2870 }
2871
2872 #ifdef IWI_DEBUG
2873 if (iwi_debug > 0) {
2874 printf("Setting ESSID to ");
2875 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
2876 printf("\n");
2877 }
2878 #endif
2879 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen);
2880 if (error != 0)
2881 goto done;
2882
2883 error = iwi_setpowermode(sc, vap);
2884 if (error != 0)
2885 goto done;
2886
2887 data = htole32(vap->iv_rtsthreshold);
2888 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2889 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2890 if (error != 0)
2891 goto done;
2892
2893 data = htole32(vap->iv_fragthreshold);
2894 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data)));
2895 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2896 if (error != 0)
2897 goto done;
2898
2899 /* the rate set has already been "negotiated" */
2900 error = iwi_set_rateset(sc, &ni->ni_rates, mode,
2901 IWI_RATESET_TYPE_NEGOTIATED);
2902 if (error != 0)
2903 goto done;
2904
2905 memset(assoc, 0, sizeof *assoc);
2906
2907 if ((vap->iv_flags & IEEE80211_F_WME) && ni->ni_ies.wme_ie != NULL) {
2908 /* NB: don't treat WME setup as failure */
2909 if (iwi_wme_setparams(sc) == 0 && iwi_wme_setie(sc) == 0)
2910 assoc->policy |= htole16(IWI_POLICY_WME);
2911 /* XXX complain on failure? */
2912 }
2913
2914 if (vap->iv_appie_wpa != NULL) {
2915 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2916
2917 DPRINTF(("Setting optional IE (len=%u)\n", ie->ie_len));
2918 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ie->ie_data, ie->ie_len);
2919 if (error != 0)
2920 goto done;
2921 }
2922
2923 error = iwi_set_sensitivity(sc, ic->ic_node_getrssi(ni));
2924 if (error != 0)
2925 goto done;
2926
2927 assoc->mode = mode;
2928 assoc->chan = ic->ic_curchan->ic_ieee;
2929 /*
2930 * NB: do not arrange for shared key auth w/o privacy
2931 * (i.e. a wep key); it causes a firmware error.
2932 */
2933 if ((vap->iv_flags & IEEE80211_F_PRIVACY) &&
2934 ni->ni_authmode == IEEE80211_AUTH_SHARED) {
2935 assoc->auth = IWI_AUTH_SHARED;
2936 /*
2937 * It's possible to have privacy marked but no default
2938 * key setup. This typically is due to a user app bug
2939 * but if we blindly grab the key the firmware will
2940 * barf so avoid it for now.
2941 */
2942 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE)
2943 assoc->auth |= vap->iv_def_txkey << 4;
2944
2945 error = iwi_setwepkeys(sc, vap);
2946 if (error != 0)
2947 goto done;
2948 }
2949 if (vap->iv_flags & IEEE80211_F_WPA)
2950 assoc->policy |= htole16(IWI_POLICY_WPA);
2951 if (vap->iv_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0)
2952 assoc->type = IWI_HC_IBSS_START;
2953 else
2954 assoc->type = IWI_HC_ASSOC;
2955 memcpy(assoc->tstamp, ni->ni_tstamp.data, 8);
2956
2957 if (vap->iv_opmode == IEEE80211_M_IBSS)
2958 capinfo = IEEE80211_CAPINFO_IBSS;
2959 else
2960 capinfo = IEEE80211_CAPINFO_ESS;
2961 if (vap->iv_flags & IEEE80211_F_PRIVACY)
2962 capinfo |= IEEE80211_CAPINFO_PRIVACY;
2963 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
2964 IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
2965 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
2966 if (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)
2967 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
2968 assoc->capinfo = htole16(capinfo);
2969
2970 assoc->lintval = htole16(ic->ic_lintval);
2971 assoc->intval = htole16(ni->ni_intval);
2972 IEEE80211_ADDR_COPY(assoc->bssid, ni->ni_bssid);
2973 if (vap->iv_opmode == IEEE80211_M_IBSS)
2974 IEEE80211_ADDR_COPY(assoc->dst, ifp->if_broadcastaddr);
2975 else
2976 IEEE80211_ADDR_COPY(assoc->dst, ni->ni_bssid);
2977
2978 DPRINTF(("%s bssid %6D dst %6D channel %u policy 0x%x "
2979 "auth %u capinfo 0x%x lintval %u bintval %u\n",
2980 assoc->type == IWI_HC_IBSS_START ? "Start" : "Join",
2981 assoc->bssid, ":", assoc->dst, ":",
2982 assoc->chan, le16toh(assoc->policy), assoc->auth,
2983 le16toh(assoc->capinfo), le16toh(assoc->lintval),
2984 le16toh(assoc->intval)));
2985 error = iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
2986 done:
2987 ieee80211_free_node(ni);
2988 if (error)
2989 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
2990
2991 return (error);
2992 }
2993
2994 static void
iwi_disassoc(void * arg,int pending)2995 iwi_disassoc(void *arg, int pending)
2996 {
2997 struct iwi_softc *sc = arg;
2998 IWI_LOCK_DECL;
2999
3000 IWI_LOCK(sc);
3001 iwi_disassociate(sc, 0);
3002 IWI_UNLOCK(sc);
3003 }
3004
3005 static int
iwi_disassociate(struct iwi_softc * sc,int quiet)3006 iwi_disassociate(struct iwi_softc *sc, int quiet)
3007 {
3008 struct iwi_associate *assoc = &sc->assoc;
3009
3010 if ((sc->flags & IWI_FLAG_ASSOCIATED) == 0) {
3011 DPRINTF(("Not associated\n"));
3012 return (-1);
3013 }
3014
3015 IWI_STATE_BEGIN(sc, IWI_FW_DISASSOCIATING);
3016
3017 if (quiet)
3018 assoc->type = IWI_HC_DISASSOC_QUIET;
3019 else
3020 assoc->type = IWI_HC_DISASSOC;
3021
3022 DPRINTF(("Trying to disassociate from %6D channel %u\n",
3023 assoc->bssid, ":", assoc->chan));
3024 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
3025 }
3026
3027 /*
3028 * release dma resources for the firmware
3029 */
3030 static void
iwi_release_fw_dma(struct iwi_softc * sc)3031 iwi_release_fw_dma(struct iwi_softc *sc)
3032 {
3033 if (sc->fw_flags & IWI_FW_HAVE_PHY)
3034 bus_dmamap_unload(sc->fw_dmat, sc->fw_map);
3035 if (sc->fw_flags & IWI_FW_HAVE_MAP)
3036 bus_dmamem_free(sc->fw_dmat, sc->fw_virtaddr, sc->fw_map);
3037 if (sc->fw_flags & IWI_FW_HAVE_DMAT)
3038 bus_dma_tag_destroy(sc->fw_dmat);
3039
3040 sc->fw_flags = 0;
3041 sc->fw_dma_size = 0;
3042 sc->fw_dmat = NULL;
3043 sc->fw_map = NULL;
3044 sc->fw_physaddr = 0;
3045 sc->fw_virtaddr = NULL;
3046 }
3047
3048 /*
3049 * allocate the dma descriptor for the firmware.
3050 * Return 0 on success, 1 on error.
3051 * Must be called unlocked, protected by IWI_FLAG_FW_LOADING.
3052 */
3053 static int
iwi_init_fw_dma(struct iwi_softc * sc,int size)3054 iwi_init_fw_dma(struct iwi_softc *sc, int size)
3055 {
3056 if (sc->fw_dma_size >= size)
3057 return 0;
3058 if (bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
3059 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
3060 size, 1, size, 0, NULL, NULL, &sc->fw_dmat) != 0) {
3061 device_printf(sc->sc_dev,
3062 "could not create firmware DMA tag\n");
3063 goto error;
3064 }
3065 sc->fw_flags |= IWI_FW_HAVE_DMAT;
3066 if (bus_dmamem_alloc(sc->fw_dmat, &sc->fw_virtaddr, 0,
3067 &sc->fw_map) != 0) {
3068 device_printf(sc->sc_dev,
3069 "could not allocate firmware DMA memory\n");
3070 goto error;
3071 }
3072 sc->fw_flags |= IWI_FW_HAVE_MAP;
3073 if (bus_dmamap_load(sc->fw_dmat, sc->fw_map, sc->fw_virtaddr,
3074 size, iwi_dma_map_addr, &sc->fw_physaddr, 0) != 0) {
3075 device_printf(sc->sc_dev, "could not load firmware DMA map\n");
3076 goto error;
3077 }
3078 sc->fw_flags |= IWI_FW_HAVE_PHY;
3079 sc->fw_dma_size = size;
3080 return 0;
3081
3082 error:
3083 iwi_release_fw_dma(sc);
3084 return 1;
3085 }
3086
3087 static void
iwi_init_locked(struct iwi_softc * sc)3088 iwi_init_locked(struct iwi_softc *sc)
3089 {
3090 struct iwi_rx_data *data;
3091 int i;
3092
3093 IWI_LOCK_ASSERT(sc);
3094
3095 if (sc->fw_state == IWI_FW_LOADING) {
3096 device_printf(sc->sc_dev, "%s: already loading\n", __func__);
3097 return; /* XXX: condvar? */
3098 }
3099
3100 iwi_stop_locked(sc);
3101
3102 IWI_STATE_BEGIN(sc, IWI_FW_LOADING);
3103
3104 if (iwi_reset(sc) != 0) {
3105 device_printf(sc->sc_dev, "could not reset adapter\n");
3106 goto fail;
3107 }
3108 if (iwi_load_firmware(sc, &sc->fw_boot) != 0) {
3109 device_printf(sc->sc_dev,
3110 "could not load boot firmware %s\n", sc->fw_boot.name);
3111 goto fail;
3112 }
3113 if (iwi_load_ucode(sc, &sc->fw_uc) != 0) {
3114 device_printf(sc->sc_dev,
3115 "could not load microcode %s\n", sc->fw_uc.name);
3116 goto fail;
3117 }
3118
3119 iwi_stop_master(sc);
3120
3121 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.physaddr);
3122 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count);
3123 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
3124
3125 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].physaddr);
3126 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count);
3127 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur);
3128
3129 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].physaddr);
3130 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count);
3131 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur);
3132
3133 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].physaddr);
3134 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count);
3135 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur);
3136
3137 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].physaddr);
3138 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count);
3139 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur);
3140
3141 for (i = 0; i < sc->rxq.count; i++) {
3142 data = &sc->rxq.data[i];
3143 CSR_WRITE_4(sc, data->reg, data->physaddr);
3144 }
3145
3146 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count - 1);
3147
3148 if (iwi_load_firmware(sc, &sc->fw_fw) != 0) {
3149 device_printf(sc->sc_dev,
3150 "could not load main firmware %s\n", sc->fw_fw.name);
3151 goto fail;
3152 }
3153 sc->flags |= IWI_FLAG_FW_INITED;
3154
3155 IWI_STATE_END(sc, IWI_FW_LOADING);
3156
3157 if (iwi_config(sc) != 0) {
3158 device_printf(sc->sc_dev, "unable to enable adapter\n");
3159 goto fail2;
3160 }
3161
3162 callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
3163 sc->sc_running = 1;
3164 return;
3165 fail:
3166 IWI_STATE_END(sc, IWI_FW_LOADING);
3167 fail2:
3168 iwi_stop_locked(sc);
3169 }
3170
3171 static void
iwi_init(void * priv)3172 iwi_init(void *priv)
3173 {
3174 struct iwi_softc *sc = priv;
3175 struct ieee80211com *ic = &sc->sc_ic;
3176 IWI_LOCK_DECL;
3177
3178 IWI_LOCK(sc);
3179 iwi_init_locked(sc);
3180 IWI_UNLOCK(sc);
3181
3182 if (sc->sc_running)
3183 ieee80211_start_all(ic);
3184 }
3185
3186 static void
iwi_stop_locked(void * priv)3187 iwi_stop_locked(void *priv)
3188 {
3189 struct iwi_softc *sc = priv;
3190
3191 IWI_LOCK_ASSERT(sc);
3192
3193 sc->sc_running = 0;
3194
3195 if (sc->sc_softled) {
3196 callout_stop(&sc->sc_ledtimer);
3197 sc->sc_blinking = 0;
3198 }
3199 callout_stop(&sc->sc_wdtimer);
3200 callout_stop(&sc->sc_rftimer);
3201
3202 iwi_stop_master(sc);
3203
3204 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SOFT_RESET);
3205
3206 /* reset rings */
3207 iwi_reset_cmd_ring(sc, &sc->cmdq);
3208 iwi_reset_tx_ring(sc, &sc->txq[0]);
3209 iwi_reset_tx_ring(sc, &sc->txq[1]);
3210 iwi_reset_tx_ring(sc, &sc->txq[2]);
3211 iwi_reset_tx_ring(sc, &sc->txq[3]);
3212 iwi_reset_rx_ring(sc, &sc->rxq);
3213
3214 sc->sc_tx_timer = 0;
3215 sc->sc_state_timer = 0;
3216 sc->sc_busy_timer = 0;
3217 sc->flags &= ~(IWI_FLAG_BUSY | IWI_FLAG_ASSOCIATED);
3218 sc->fw_state = IWI_FW_IDLE;
3219 wakeup(sc);
3220 }
3221
3222 static void
iwi_stop(struct iwi_softc * sc)3223 iwi_stop(struct iwi_softc *sc)
3224 {
3225 IWI_LOCK_DECL;
3226
3227 IWI_LOCK(sc);
3228 iwi_stop_locked(sc);
3229 IWI_UNLOCK(sc);
3230 }
3231
3232 static void
iwi_restart(void * arg,int npending)3233 iwi_restart(void *arg, int npending)
3234 {
3235 struct iwi_softc *sc = arg;
3236
3237 iwi_init(sc);
3238 }
3239
3240 /*
3241 * Return whether or not the radio is enabled in hardware
3242 * (i.e. the rfkill switch is "off").
3243 */
3244 static int
iwi_getrfkill(struct iwi_softc * sc)3245 iwi_getrfkill(struct iwi_softc *sc)
3246 {
3247 return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0;
3248 }
3249
3250 static void
iwi_radio_on(void * arg,int pending)3251 iwi_radio_on(void *arg, int pending)
3252 {
3253 struct iwi_softc *sc = arg;
3254 struct ieee80211com *ic = &sc->sc_ic;
3255
3256 device_printf(sc->sc_dev, "radio turned on\n");
3257
3258 iwi_init(sc);
3259 ieee80211_notify_radio(ic, 1);
3260 }
3261
3262 static void
iwi_rfkill_poll(void * arg)3263 iwi_rfkill_poll(void *arg)
3264 {
3265 struct iwi_softc *sc = arg;
3266
3267 IWI_LOCK_ASSERT(sc);
3268
3269 /*
3270 * Check for a change in rfkill state. We get an
3271 * interrupt when a radio is disabled but not when
3272 * it is enabled so we must poll for the latter.
3273 */
3274 if (!iwi_getrfkill(sc)) {
3275 ieee80211_runtask(&sc->sc_ic, &sc->sc_radiontask);
3276 return;
3277 }
3278 callout_reset(&sc->sc_rftimer, 2*hz, iwi_rfkill_poll, sc);
3279 }
3280
3281 static void
iwi_radio_off(void * arg,int pending)3282 iwi_radio_off(void *arg, int pending)
3283 {
3284 struct iwi_softc *sc = arg;
3285 struct ieee80211com *ic = &sc->sc_ic;
3286 IWI_LOCK_DECL;
3287
3288 device_printf(sc->sc_dev, "radio turned off\n");
3289
3290 ieee80211_notify_radio(ic, 0);
3291
3292 IWI_LOCK(sc);
3293 iwi_stop_locked(sc);
3294 iwi_rfkill_poll(sc);
3295 IWI_UNLOCK(sc);
3296 }
3297
3298 static int
iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)3299 iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)
3300 {
3301 struct iwi_softc *sc = arg1;
3302 uint32_t size, buf[128];
3303
3304 memset(buf, 0, sizeof buf);
3305
3306 if (!(sc->flags & IWI_FLAG_FW_INITED))
3307 return SYSCTL_OUT(req, buf, sizeof buf);
3308
3309 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1);
3310 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size);
3311
3312 return SYSCTL_OUT(req, buf, size);
3313 }
3314
3315 static int
iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)3316 iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)
3317 {
3318 struct iwi_softc *sc = arg1;
3319 int val = !iwi_getrfkill(sc);
3320
3321 return SYSCTL_OUT(req, &val, sizeof val);
3322 }
3323
3324 /*
3325 * Add sysctl knobs.
3326 */
3327 static void
iwi_sysctlattach(struct iwi_softc * sc)3328 iwi_sysctlattach(struct iwi_softc *sc)
3329 {
3330 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3331 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3332
3333 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "radio",
3334 CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I",
3335 "radio transmitter switch state (0=off, 1=on)");
3336
3337 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "stats",
3338 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats, "S",
3339 "statistics");
3340
3341 sc->bluetooth = 0;
3342 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "bluetooth",
3343 CTLFLAG_RW, &sc->bluetooth, 0, "bluetooth coexistence");
3344
3345 sc->antenna = IWI_ANTENNA_AUTO;
3346 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "antenna",
3347 CTLFLAG_RW, &sc->antenna, 0, "antenna (0=auto)");
3348 }
3349
3350 /*
3351 * LED support.
3352 *
3353 * Different cards have different capabilities. Some have three
3354 * led's while others have only one. The linux ipw driver defines
3355 * led's for link state (associated or not), band (11a, 11g, 11b),
3356 * and for link activity. We use one led and vary the blink rate
3357 * according to the tx/rx traffic a la the ath driver.
3358 */
3359
3360 static __inline uint32_t
iwi_toggle_event(uint32_t r)3361 iwi_toggle_event(uint32_t r)
3362 {
3363 return r &~ (IWI_RST_STANDBY | IWI_RST_GATE_ODMA |
3364 IWI_RST_GATE_IDMA | IWI_RST_GATE_ADMA);
3365 }
3366
3367 static uint32_t
iwi_read_event(struct iwi_softc * sc)3368 iwi_read_event(struct iwi_softc *sc)
3369 {
3370 return MEM_READ_4(sc, IWI_MEM_EEPROM_EVENT);
3371 }
3372
3373 static void
iwi_write_event(struct iwi_softc * sc,uint32_t v)3374 iwi_write_event(struct iwi_softc *sc, uint32_t v)
3375 {
3376 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, v);
3377 }
3378
3379 static void
iwi_led_done(void * arg)3380 iwi_led_done(void *arg)
3381 {
3382 struct iwi_softc *sc = arg;
3383
3384 sc->sc_blinking = 0;
3385 }
3386
3387 /*
3388 * Turn the activity LED off: flip the pin and then set a timer so no
3389 * update will happen for the specified duration.
3390 */
3391 static void
iwi_led_off(void * arg)3392 iwi_led_off(void *arg)
3393 {
3394 struct iwi_softc *sc = arg;
3395 uint32_t v;
3396
3397 v = iwi_read_event(sc);
3398 v &= ~sc->sc_ledpin;
3399 iwi_write_event(sc, iwi_toggle_event(v));
3400 callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, iwi_led_done, sc);
3401 }
3402
3403 /*
3404 * Blink the LED according to the specified on/off times.
3405 */
3406 static void
iwi_led_blink(struct iwi_softc * sc,int on,int off)3407 iwi_led_blink(struct iwi_softc *sc, int on, int off)
3408 {
3409 uint32_t v;
3410
3411 v = iwi_read_event(sc);
3412 v |= sc->sc_ledpin;
3413 iwi_write_event(sc, iwi_toggle_event(v));
3414 sc->sc_blinking = 1;
3415 sc->sc_ledoff = off;
3416 callout_reset(&sc->sc_ledtimer, on, iwi_led_off, sc);
3417 }
3418
3419 static void
iwi_led_event(struct iwi_softc * sc,int event)3420 iwi_led_event(struct iwi_softc *sc, int event)
3421 {
3422 /* NB: on/off times from the Atheros NDIS driver, w/ permission */
3423 static const struct {
3424 u_int rate; /* tx/rx iwi rate */
3425 u_int16_t timeOn; /* LED on time (ms) */
3426 u_int16_t timeOff; /* LED off time (ms) */
3427 } blinkrates[] = {
3428 { IWI_RATE_OFDM54, 40, 10 },
3429 { IWI_RATE_OFDM48, 44, 11 },
3430 { IWI_RATE_OFDM36, 50, 13 },
3431 { IWI_RATE_OFDM24, 57, 14 },
3432 { IWI_RATE_OFDM18, 67, 16 },
3433 { IWI_RATE_OFDM12, 80, 20 },
3434 { IWI_RATE_DS11, 100, 25 },
3435 { IWI_RATE_OFDM9, 133, 34 },
3436 { IWI_RATE_OFDM6, 160, 40 },
3437 { IWI_RATE_DS5, 200, 50 },
3438 { 6, 240, 58 }, /* XXX 3Mb/s if it existed */
3439 { IWI_RATE_DS2, 267, 66 },
3440 { IWI_RATE_DS1, 400, 100 },
3441 { 0, 500, 130 }, /* unknown rate/polling */
3442 };
3443 uint32_t txrate;
3444 int j = 0; /* XXX silence compiler */
3445
3446 sc->sc_ledevent = ticks; /* time of last event */
3447 if (sc->sc_blinking) /* don't interrupt active blink */
3448 return;
3449 switch (event) {
3450 case IWI_LED_POLL:
3451 j = nitems(blinkrates)-1;
3452 break;
3453 case IWI_LED_TX:
3454 /* read current transmission rate from adapter */
3455 txrate = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE);
3456 if (blinkrates[sc->sc_txrix].rate != txrate) {
3457 for (j = 0; j < nitems(blinkrates)-1; j++)
3458 if (blinkrates[j].rate == txrate)
3459 break;
3460 sc->sc_txrix = j;
3461 } else
3462 j = sc->sc_txrix;
3463 break;
3464 case IWI_LED_RX:
3465 if (blinkrates[sc->sc_rxrix].rate != sc->sc_rxrate) {
3466 for (j = 0; j < nitems(blinkrates)-1; j++)
3467 if (blinkrates[j].rate == sc->sc_rxrate)
3468 break;
3469 sc->sc_rxrix = j;
3470 } else
3471 j = sc->sc_rxrix;
3472 break;
3473 }
3474 /* XXX beware of overflow */
3475 iwi_led_blink(sc, (blinkrates[j].timeOn * hz) / 1000,
3476 (blinkrates[j].timeOff * hz) / 1000);
3477 }
3478
3479 static int
iwi_sysctl_softled(SYSCTL_HANDLER_ARGS)3480 iwi_sysctl_softled(SYSCTL_HANDLER_ARGS)
3481 {
3482 struct iwi_softc *sc = arg1;
3483 int softled = sc->sc_softled;
3484 int error;
3485
3486 error = sysctl_handle_int(oidp, &softled, 0, req);
3487 if (error || !req->newptr)
3488 return error;
3489 softled = (softled != 0);
3490 if (softled != sc->sc_softled) {
3491 if (softled) {
3492 uint32_t v = iwi_read_event(sc);
3493 v &= ~sc->sc_ledpin;
3494 iwi_write_event(sc, iwi_toggle_event(v));
3495 }
3496 sc->sc_softled = softled;
3497 }
3498 return 0;
3499 }
3500
3501 static void
iwi_ledattach(struct iwi_softc * sc)3502 iwi_ledattach(struct iwi_softc *sc)
3503 {
3504 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3505 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3506
3507 sc->sc_blinking = 0;
3508 sc->sc_ledstate = 1;
3509 sc->sc_ledidle = (2700*hz)/1000; /* 2.7sec */
3510 callout_init_mtx(&sc->sc_ledtimer, &sc->sc_mtx, 0);
3511
3512 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3513 "softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
3514 iwi_sysctl_softled, "I", "enable/disable software LED support");
3515 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3516 "ledpin", CTLFLAG_RW, &sc->sc_ledpin, 0,
3517 "pin setting to turn activity LED on");
3518 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3519 "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0,
3520 "idle time for inactivity LED (ticks)");
3521 /* XXX for debugging */
3522 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3523 "nictype", CTLFLAG_RD, &sc->sc_nictype, 0,
3524 "NIC type from EEPROM");
3525
3526 sc->sc_ledpin = IWI_RST_LED_ACTIVITY;
3527 sc->sc_softled = 1;
3528
3529 sc->sc_nictype = (iwi_read_prom_word(sc, IWI_EEPROM_NIC) >> 8) & 0xff;
3530 if (sc->sc_nictype == 1) {
3531 /*
3532 * NB: led's are reversed.
3533 */
3534 sc->sc_ledpin = IWI_RST_LED_ASSOCIATED;
3535 }
3536 }
3537
3538 static void
iwi_scan_start(struct ieee80211com * ic)3539 iwi_scan_start(struct ieee80211com *ic)
3540 {
3541 /* ignore */
3542 }
3543
3544 static void
iwi_set_channel(struct ieee80211com * ic)3545 iwi_set_channel(struct ieee80211com *ic)
3546 {
3547 struct iwi_softc *sc = ic->ic_softc;
3548
3549 if (sc->fw_state == IWI_FW_IDLE)
3550 iwi_setcurchan(sc, ic->ic_curchan->ic_ieee);
3551 }
3552
3553 static void
iwi_scan_curchan(struct ieee80211_scan_state * ss,unsigned long maxdwell)3554 iwi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
3555 {
3556 struct ieee80211vap *vap = ss->ss_vap;
3557 struct iwi_softc *sc = vap->iv_ic->ic_softc;
3558 IWI_LOCK_DECL;
3559
3560 IWI_LOCK(sc);
3561 if (iwi_scanchan(sc, maxdwell, 0))
3562 ieee80211_cancel_scan(vap);
3563 IWI_UNLOCK(sc);
3564 }
3565
3566 static void
iwi_scan_mindwell(struct ieee80211_scan_state * ss)3567 iwi_scan_mindwell(struct ieee80211_scan_state *ss)
3568 {
3569 /* NB: don't try to abort scan; wait for firmware to finish */
3570 }
3571
3572 static void
iwi_scan_end(struct ieee80211com * ic)3573 iwi_scan_end(struct ieee80211com *ic)
3574 {
3575 struct iwi_softc *sc = ic->ic_softc;
3576 IWI_LOCK_DECL;
3577
3578 IWI_LOCK(sc);
3579 sc->flags &= ~IWI_FLAG_CHANNEL_SCAN;
3580 /* NB: make sure we're still scanning */
3581 if (sc->fw_state == IWI_FW_SCANNING)
3582 iwi_cmd(sc, IWI_CMD_ABORT_SCAN, NULL, 0);
3583 IWI_UNLOCK(sc);
3584 }
3585
3586 static void
iwi_collect_bands(struct ieee80211com * ic,uint8_t bands[],size_t bands_sz)3587 iwi_collect_bands(struct ieee80211com *ic, uint8_t bands[], size_t bands_sz)
3588 {
3589 struct iwi_softc *sc = ic->ic_softc;
3590 device_t dev = sc->sc_dev;
3591
3592 memset(bands, 0, bands_sz);
3593 setbit(bands, IEEE80211_MODE_11B);
3594 setbit(bands, IEEE80211_MODE_11G);
3595 if (pci_get_device(dev) >= 0x4223)
3596 setbit(bands, IEEE80211_MODE_11A);
3597 }
3598
3599 static void
iwi_getradiocaps(struct ieee80211com * ic,int maxchans,int * nchans,struct ieee80211_channel chans[])3600 iwi_getradiocaps(struct ieee80211com *ic,
3601 int maxchans, int *nchans, struct ieee80211_channel chans[])
3602 {
3603 uint8_t bands[IEEE80211_MODE_BYTES];
3604
3605 iwi_collect_bands(ic, bands, sizeof(bands));
3606 *nchans = 0;
3607 if (isset(bands, IEEE80211_MODE_11B) || isset(bands, IEEE80211_MODE_11G))
3608 ieee80211_add_channels_default_2ghz(chans, maxchans, nchans,
3609 bands, 0);
3610 if (isset(bands, IEEE80211_MODE_11A)) {
3611 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans,
3612 def_chan_5ghz_band1, nitems(def_chan_5ghz_band1),
3613 bands, 0);
3614 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans,
3615 def_chan_5ghz_band2, nitems(def_chan_5ghz_band2),
3616 bands, 0);
3617 ieee80211_add_channel_list_5ghz(chans, maxchans, nchans,
3618 def_chan_5ghz_band3, nitems(def_chan_5ghz_band3),
3619 bands, 0);
3620 }
3621 }
3622