1 /*-
2 * Copyright (c) 2004, 2005
3 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
4 * Copyright (c) 2005-2006 Sam Leffler, Errno Consulting
5 * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
12 * disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD: stable/9/sys/dev/iwi/if_iwi.c 264953 2014-04-25 22:19:06Z marius $");
32
33 /*-
34 * Intel(R) PRO/Wireless 2200BG/2225BG/2915ABG driver
35 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm
36 */
37
38 #include <sys/param.h>
39 #include <sys/sysctl.h>
40 #include <sys/sockio.h>
41 #include <sys/mbuf.h>
42 #include <sys/kernel.h>
43 #include <sys/socket.h>
44 #include <sys/systm.h>
45 #include <sys/malloc.h>
46 #include <sys/lock.h>
47 #include <sys/mutex.h>
48 #include <sys/module.h>
49 #include <sys/bus.h>
50 #include <sys/endian.h>
51 #include <sys/proc.h>
52 #include <sys/mount.h>
53 #include <sys/namei.h>
54 #include <sys/linker.h>
55 #include <sys/firmware.h>
56 #include <sys/taskqueue.h>
57
58 #include <machine/bus.h>
59 #include <machine/resource.h>
60 #include <sys/rman.h>
61
62 #include <dev/pci/pcireg.h>
63 #include <dev/pci/pcivar.h>
64
65 #include <net/bpf.h>
66 #include <net/if.h>
67 #include <net/if_arp.h>
68 #include <net/ethernet.h>
69 #include <net/if_dl.h>
70 #include <net/if_media.h>
71 #include <net/if_types.h>
72
73 #include <net80211/ieee80211_var.h>
74 #include <net80211/ieee80211_radiotap.h>
75 #include <net80211/ieee80211_input.h>
76 #include <net80211/ieee80211_regdomain.h>
77
78 #include <netinet/in.h>
79 #include <netinet/in_systm.h>
80 #include <netinet/in_var.h>
81 #include <netinet/ip.h>
82 #include <netinet/if_ether.h>
83
84 #include <dev/iwi/if_iwireg.h>
85 #include <dev/iwi/if_iwivar.h>
86
87 #define IWI_DEBUG
88 #ifdef IWI_DEBUG
89 #define DPRINTF(x) do { if (iwi_debug > 0) printf x; } while (0)
90 #define DPRINTFN(n, x) do { if (iwi_debug >= (n)) printf x; } while (0)
91 int iwi_debug = 0;
92 SYSCTL_INT(_debug, OID_AUTO, iwi, CTLFLAG_RW, &iwi_debug, 0, "iwi debug level");
93
94 static const char *iwi_fw_states[] = {
95 "IDLE", /* IWI_FW_IDLE */
96 "LOADING", /* IWI_FW_LOADING */
97 "ASSOCIATING", /* IWI_FW_ASSOCIATING */
98 "DISASSOCIATING", /* IWI_FW_DISASSOCIATING */
99 "SCANNING", /* IWI_FW_SCANNING */
100 };
101 #else
102 #define DPRINTF(x)
103 #define DPRINTFN(n, x)
104 #endif
105
106 MODULE_DEPEND(iwi, pci, 1, 1, 1);
107 MODULE_DEPEND(iwi, wlan, 1, 1, 1);
108 MODULE_DEPEND(iwi, firmware, 1, 1, 1);
109
110 enum {
111 IWI_LED_TX,
112 IWI_LED_RX,
113 IWI_LED_POLL,
114 };
115
116 struct iwi_ident {
117 uint16_t vendor;
118 uint16_t device;
119 const char *name;
120 };
121
122 static const struct iwi_ident iwi_ident_table[] = {
123 { 0x8086, 0x4220, "Intel(R) PRO/Wireless 2200BG" },
124 { 0x8086, 0x4221, "Intel(R) PRO/Wireless 2225BG" },
125 { 0x8086, 0x4223, "Intel(R) PRO/Wireless 2915ABG" },
126 { 0x8086, 0x4224, "Intel(R) PRO/Wireless 2915ABG" },
127
128 { 0, 0, NULL }
129 };
130
131 static struct ieee80211vap *iwi_vap_create(struct ieee80211com *,
132 const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
133 const uint8_t [IEEE80211_ADDR_LEN],
134 const uint8_t [IEEE80211_ADDR_LEN]);
135 static void iwi_vap_delete(struct ieee80211vap *);
136 static void iwi_dma_map_addr(void *, bus_dma_segment_t *, int, int);
137 static int iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *,
138 int);
139 static void iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
140 static void iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *);
141 static int iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *,
142 int, bus_addr_t, bus_addr_t);
143 static void iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
144 static void iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *);
145 static int iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *,
146 int);
147 static void iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
148 static void iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *);
149 static struct ieee80211_node *iwi_node_alloc(struct ieee80211vap *,
150 const uint8_t [IEEE80211_ADDR_LEN]);
151 static void iwi_node_free(struct ieee80211_node *);
152 static void iwi_media_status(struct ifnet *, struct ifmediareq *);
153 static int iwi_newstate(struct ieee80211vap *, enum ieee80211_state, int);
154 static void iwi_wme_init(struct iwi_softc *);
155 static int iwi_wme_setparams(struct iwi_softc *, struct ieee80211com *);
156 static void iwi_update_wme(void *, int);
157 static int iwi_wme_update(struct ieee80211com *);
158 static uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t);
159 static void iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int,
160 struct iwi_frame *);
161 static void iwi_notification_intr(struct iwi_softc *, struct iwi_notif *);
162 static void iwi_rx_intr(struct iwi_softc *);
163 static void iwi_tx_intr(struct iwi_softc *, struct iwi_tx_ring *);
164 static void iwi_intr(void *);
165 static int iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t);
166 static void iwi_write_ibssnode(struct iwi_softc *, const u_int8_t [], int);
167 static int iwi_tx_start(struct ifnet *, struct mbuf *,
168 struct ieee80211_node *, int);
169 static int iwi_raw_xmit(struct ieee80211_node *, struct mbuf *,
170 const struct ieee80211_bpf_params *);
171 static void iwi_start_locked(struct ifnet *);
172 static void iwi_start(struct ifnet *);
173 static void iwi_watchdog(void *);
174 static int iwi_ioctl(struct ifnet *, u_long, caddr_t);
175 static void iwi_stop_master(struct iwi_softc *);
176 static int iwi_reset(struct iwi_softc *);
177 static int iwi_load_ucode(struct iwi_softc *, const struct iwi_fw *);
178 static int iwi_load_firmware(struct iwi_softc *, const struct iwi_fw *);
179 static void iwi_release_fw_dma(struct iwi_softc *sc);
180 static int iwi_config(struct iwi_softc *);
181 static int iwi_get_firmware(struct iwi_softc *, enum ieee80211_opmode);
182 static void iwi_put_firmware(struct iwi_softc *);
183 static void iwi_monitor_scan(void *, int);
184 static int iwi_scanchan(struct iwi_softc *, unsigned long, int);
185 static void iwi_scan_start(struct ieee80211com *);
186 static void iwi_scan_end(struct ieee80211com *);
187 static void iwi_set_channel(struct ieee80211com *);
188 static void iwi_scan_curchan(struct ieee80211_scan_state *, unsigned long maxdwell);
189 static void iwi_scan_mindwell(struct ieee80211_scan_state *);
190 static int iwi_auth_and_assoc(struct iwi_softc *, struct ieee80211vap *);
191 static void iwi_disassoc(void *, int);
192 static int iwi_disassociate(struct iwi_softc *, int quiet);
193 static void iwi_init_locked(struct iwi_softc *);
194 static void iwi_init(void *);
195 static int iwi_init_fw_dma(struct iwi_softc *, int);
196 static void iwi_stop_locked(void *);
197 static void iwi_stop(struct iwi_softc *);
198 static void iwi_restart(void *, int);
199 static int iwi_getrfkill(struct iwi_softc *);
200 static void iwi_radio_on(void *, int);
201 static void iwi_radio_off(void *, int);
202 static void iwi_sysctlattach(struct iwi_softc *);
203 static void iwi_led_event(struct iwi_softc *, int);
204 static void iwi_ledattach(struct iwi_softc *);
205
206 static int iwi_probe(device_t);
207 static int iwi_attach(device_t);
208 static int iwi_detach(device_t);
209 static int iwi_shutdown(device_t);
210 static int iwi_suspend(device_t);
211 static int iwi_resume(device_t);
212
213 static device_method_t iwi_methods[] = {
214 /* Device interface */
215 DEVMETHOD(device_probe, iwi_probe),
216 DEVMETHOD(device_attach, iwi_attach),
217 DEVMETHOD(device_detach, iwi_detach),
218 DEVMETHOD(device_shutdown, iwi_shutdown),
219 DEVMETHOD(device_suspend, iwi_suspend),
220 DEVMETHOD(device_resume, iwi_resume),
221
222 DEVMETHOD_END
223 };
224
225 static driver_t iwi_driver = {
226 "iwi",
227 iwi_methods,
228 sizeof (struct iwi_softc)
229 };
230
231 static devclass_t iwi_devclass;
232
233 DRIVER_MODULE(iwi, pci, iwi_driver, iwi_devclass, NULL, NULL);
234
235 MODULE_VERSION(iwi, 1);
236
237 static __inline uint8_t
MEM_READ_1(struct iwi_softc * sc,uint32_t addr)238 MEM_READ_1(struct iwi_softc *sc, uint32_t addr)
239 {
240 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
241 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA);
242 }
243
244 static __inline uint32_t
MEM_READ_4(struct iwi_softc * sc,uint32_t addr)245 MEM_READ_4(struct iwi_softc *sc, uint32_t addr)
246 {
247 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr);
248 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA);
249 }
250
251 static int
iwi_probe(device_t dev)252 iwi_probe(device_t dev)
253 {
254 const struct iwi_ident *ident;
255
256 for (ident = iwi_ident_table; ident->name != NULL; ident++) {
257 if (pci_get_vendor(dev) == ident->vendor &&
258 pci_get_device(dev) == ident->device) {
259 device_set_desc(dev, ident->name);
260 return (BUS_PROBE_DEFAULT);
261 }
262 }
263 return ENXIO;
264 }
265
266 static int
iwi_attach(device_t dev)267 iwi_attach(device_t dev)
268 {
269 struct iwi_softc *sc = device_get_softc(dev);
270 struct ifnet *ifp;
271 struct ieee80211com *ic;
272 uint16_t val;
273 int i, error;
274 uint8_t bands;
275 uint8_t macaddr[IEEE80211_ADDR_LEN];
276
277 sc->sc_dev = dev;
278
279 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211);
280 if (ifp == NULL) {
281 device_printf(dev, "can not if_alloc()\n");
282 return ENXIO;
283 }
284 ic = ifp->if_l2com;
285
286 IWI_LOCK_INIT(sc);
287
288 sc->sc_unr = new_unrhdr(1, IWI_MAX_IBSSNODE-1, &sc->sc_mtx);
289
290 TASK_INIT(&sc->sc_radiontask, 0, iwi_radio_on, sc);
291 TASK_INIT(&sc->sc_radiofftask, 0, iwi_radio_off, sc);
292 TASK_INIT(&sc->sc_restarttask, 0, iwi_restart, sc);
293 TASK_INIT(&sc->sc_disassoctask, 0, iwi_disassoc, sc);
294 TASK_INIT(&sc->sc_wmetask, 0, iwi_update_wme, sc);
295 TASK_INIT(&sc->sc_monitortask, 0, iwi_monitor_scan, sc);
296
297 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0);
298 callout_init_mtx(&sc->sc_rftimer, &sc->sc_mtx, 0);
299
300 pci_write_config(dev, 0x41, 0, 1);
301
302 /* enable bus-mastering */
303 pci_enable_busmaster(dev);
304
305 i = PCIR_BAR(0);
306 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE);
307 if (sc->mem == NULL) {
308 device_printf(dev, "could not allocate memory resource\n");
309 goto fail;
310 }
311
312 sc->sc_st = rman_get_bustag(sc->mem);
313 sc->sc_sh = rman_get_bushandle(sc->mem);
314
315 i = 0;
316 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i,
317 RF_ACTIVE | RF_SHAREABLE);
318 if (sc->irq == NULL) {
319 device_printf(dev, "could not allocate interrupt resource\n");
320 goto fail;
321 }
322
323 if (iwi_reset(sc) != 0) {
324 device_printf(dev, "could not reset adapter\n");
325 goto fail;
326 }
327
328 /*
329 * Allocate rings.
330 */
331 if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) {
332 device_printf(dev, "could not allocate Cmd ring\n");
333 goto fail;
334 }
335
336 for (i = 0; i < 4; i++) {
337 error = iwi_alloc_tx_ring(sc, &sc->txq[i], IWI_TX_RING_COUNT,
338 IWI_CSR_TX1_RIDX + i * 4,
339 IWI_CSR_TX1_WIDX + i * 4);
340 if (error != 0) {
341 device_printf(dev, "could not allocate Tx ring %d\n",
342 i+i);
343 goto fail;
344 }
345 }
346
347 if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) {
348 device_printf(dev, "could not allocate Rx ring\n");
349 goto fail;
350 }
351
352 iwi_wme_init(sc);
353
354 ifp->if_softc = sc;
355 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
356 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
357 ifp->if_init = iwi_init;
358 ifp->if_ioctl = iwi_ioctl;
359 ifp->if_start = iwi_start;
360 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
361 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
362 IFQ_SET_READY(&ifp->if_snd);
363
364 ic->ic_ifp = ifp;
365 ic->ic_opmode = IEEE80211_M_STA;
366 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
367
368 /* set device capabilities */
369 ic->ic_caps =
370 IEEE80211_C_STA /* station mode supported */
371 | IEEE80211_C_IBSS /* IBSS mode supported */
372 | IEEE80211_C_MONITOR /* monitor mode supported */
373 | IEEE80211_C_PMGT /* power save supported */
374 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
375 | IEEE80211_C_WPA /* 802.11i */
376 | IEEE80211_C_WME /* 802.11e */
377 #if 0
378 | IEEE80211_C_BGSCAN /* capable of bg scanning */
379 #endif
380 ;
381
382 /* read MAC address from EEPROM */
383 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0);
384 macaddr[0] = val & 0xff;
385 macaddr[1] = val >> 8;
386 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1);
387 macaddr[2] = val & 0xff;
388 macaddr[3] = val >> 8;
389 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2);
390 macaddr[4] = val & 0xff;
391 macaddr[5] = val >> 8;
392
393 bands = 0;
394 setbit(&bands, IEEE80211_MODE_11B);
395 setbit(&bands, IEEE80211_MODE_11G);
396 if (pci_get_device(dev) >= 0x4223)
397 setbit(&bands, IEEE80211_MODE_11A);
398 ieee80211_init_channels(ic, NULL, &bands);
399
400 ieee80211_ifattach(ic, macaddr);
401 /* override default methods */
402 ic->ic_node_alloc = iwi_node_alloc;
403 sc->sc_node_free = ic->ic_node_free;
404 ic->ic_node_free = iwi_node_free;
405 ic->ic_raw_xmit = iwi_raw_xmit;
406 ic->ic_scan_start = iwi_scan_start;
407 ic->ic_scan_end = iwi_scan_end;
408 ic->ic_set_channel = iwi_set_channel;
409 ic->ic_scan_curchan = iwi_scan_curchan;
410 ic->ic_scan_mindwell = iwi_scan_mindwell;
411 ic->ic_wme.wme_update = iwi_wme_update;
412
413 ic->ic_vap_create = iwi_vap_create;
414 ic->ic_vap_delete = iwi_vap_delete;
415
416 ieee80211_radiotap_attach(ic,
417 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap),
418 IWI_TX_RADIOTAP_PRESENT,
419 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap),
420 IWI_RX_RADIOTAP_PRESENT);
421
422 iwi_sysctlattach(sc);
423 iwi_ledattach(sc);
424
425 /*
426 * Hook our interrupt after all initialization is complete.
427 */
428 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
429 NULL, iwi_intr, sc, &sc->sc_ih);
430 if (error != 0) {
431 device_printf(dev, "could not set up interrupt\n");
432 goto fail;
433 }
434
435 if (bootverbose)
436 ieee80211_announce(ic);
437
438 return 0;
439 fail:
440 /* XXX fix */
441 iwi_detach(dev);
442 return ENXIO;
443 }
444
445 static int
iwi_detach(device_t dev)446 iwi_detach(device_t dev)
447 {
448 struct iwi_softc *sc = device_get_softc(dev);
449 struct ifnet *ifp = sc->sc_ifp;
450 struct ieee80211com *ic = ifp->if_l2com;
451
452 bus_teardown_intr(dev, sc->irq, sc->sc_ih);
453
454 /* NB: do early to drain any pending tasks */
455 ieee80211_draintask(ic, &sc->sc_radiontask);
456 ieee80211_draintask(ic, &sc->sc_radiofftask);
457 ieee80211_draintask(ic, &sc->sc_restarttask);
458 ieee80211_draintask(ic, &sc->sc_disassoctask);
459 ieee80211_draintask(ic, &sc->sc_monitortask);
460
461 iwi_stop(sc);
462
463 ieee80211_ifdetach(ic);
464
465 iwi_put_firmware(sc);
466 iwi_release_fw_dma(sc);
467
468 iwi_free_cmd_ring(sc, &sc->cmdq);
469 iwi_free_tx_ring(sc, &sc->txq[0]);
470 iwi_free_tx_ring(sc, &sc->txq[1]);
471 iwi_free_tx_ring(sc, &sc->txq[2]);
472 iwi_free_tx_ring(sc, &sc->txq[3]);
473 iwi_free_rx_ring(sc, &sc->rxq);
474
475 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq);
476
477 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem),
478 sc->mem);
479
480 delete_unrhdr(sc->sc_unr);
481
482 IWI_LOCK_DESTROY(sc);
483
484 if_free(ifp);
485
486 return 0;
487 }
488
489 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])490 iwi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
491 enum ieee80211_opmode opmode, int flags,
492 const uint8_t bssid[IEEE80211_ADDR_LEN],
493 const uint8_t mac[IEEE80211_ADDR_LEN])
494 {
495 struct ifnet *ifp = ic->ic_ifp;
496 struct iwi_softc *sc = ifp->if_softc;
497 struct iwi_vap *ivp;
498 struct ieee80211vap *vap;
499 int i;
500
501 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */
502 return NULL;
503 /*
504 * Get firmware image (and possibly dma memory) on mode change.
505 */
506 if (iwi_get_firmware(sc, opmode))
507 return NULL;
508 /* allocate DMA memory for mapping firmware image */
509 i = sc->fw_fw.size;
510 if (sc->fw_boot.size > i)
511 i = sc->fw_boot.size;
512 /* XXX do we dma the ucode as well ? */
513 if (sc->fw_uc.size > i)
514 i = sc->fw_uc.size;
515 if (iwi_init_fw_dma(sc, i))
516 return NULL;
517
518 ivp = (struct iwi_vap *) malloc(sizeof(struct iwi_vap),
519 M_80211_VAP, M_NOWAIT | M_ZERO);
520 if (ivp == NULL)
521 return NULL;
522 vap = &ivp->iwi_vap;
523 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac);
524 /* override the default, the setting comes from the linux driver */
525 vap->iv_bmissthreshold = 24;
526 /* override with driver methods */
527 ivp->iwi_newstate = vap->iv_newstate;
528 vap->iv_newstate = iwi_newstate;
529
530 /* complete setup */
531 ieee80211_vap_attach(vap, ieee80211_media_change, iwi_media_status);
532 ic->ic_opmode = opmode;
533 return vap;
534 }
535
536 static void
iwi_vap_delete(struct ieee80211vap * vap)537 iwi_vap_delete(struct ieee80211vap *vap)
538 {
539 struct iwi_vap *ivp = IWI_VAP(vap);
540
541 ieee80211_vap_detach(vap);
542 free(ivp, M_80211_VAP);
543 }
544
545 static void
iwi_dma_map_addr(void * arg,bus_dma_segment_t * segs,int nseg,int error)546 iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
547 {
548 if (error != 0)
549 return;
550
551 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
552
553 *(bus_addr_t *)arg = segs[0].ds_addr;
554 }
555
556 static int
iwi_alloc_cmd_ring(struct iwi_softc * sc,struct iwi_cmd_ring * ring,int count)557 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, int count)
558 {
559 int error;
560
561 ring->count = count;
562 ring->queued = 0;
563 ring->cur = ring->next = 0;
564
565 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
566 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
567 count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE, 0,
568 NULL, NULL, &ring->desc_dmat);
569 if (error != 0) {
570 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
571 goto fail;
572 }
573
574 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
575 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
576 if (error != 0) {
577 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
578 goto fail;
579 }
580
581 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
582 count * IWI_CMD_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
583 if (error != 0) {
584 device_printf(sc->sc_dev, "could not load desc DMA map\n");
585 goto fail;
586 }
587
588 return 0;
589
590 fail: iwi_free_cmd_ring(sc, ring);
591 return error;
592 }
593
594 static void
iwi_reset_cmd_ring(struct iwi_softc * sc,struct iwi_cmd_ring * ring)595 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
596 {
597 ring->queued = 0;
598 ring->cur = ring->next = 0;
599 }
600
601 static void
iwi_free_cmd_ring(struct iwi_softc * sc,struct iwi_cmd_ring * ring)602 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring)
603 {
604 if (ring->desc != NULL) {
605 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
606 BUS_DMASYNC_POSTWRITE);
607 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
608 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
609 }
610
611 if (ring->desc_dmat != NULL)
612 bus_dma_tag_destroy(ring->desc_dmat);
613 }
614
615 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)616 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, int count,
617 bus_addr_t csr_ridx, bus_addr_t csr_widx)
618 {
619 int i, error;
620
621 ring->count = count;
622 ring->queued = 0;
623 ring->cur = ring->next = 0;
624 ring->csr_ridx = csr_ridx;
625 ring->csr_widx = csr_widx;
626
627 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
628 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
629 count * IWI_TX_DESC_SIZE, 1, count * IWI_TX_DESC_SIZE, 0, NULL,
630 NULL, &ring->desc_dmat);
631 if (error != 0) {
632 device_printf(sc->sc_dev, "could not create desc DMA tag\n");
633 goto fail;
634 }
635
636 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc,
637 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map);
638 if (error != 0) {
639 device_printf(sc->sc_dev, "could not allocate DMA memory\n");
640 goto fail;
641 }
642
643 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc,
644 count * IWI_TX_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0);
645 if (error != 0) {
646 device_printf(sc->sc_dev, "could not load desc DMA map\n");
647 goto fail;
648 }
649
650 ring->data = malloc(count * sizeof (struct iwi_tx_data), M_DEVBUF,
651 M_NOWAIT | M_ZERO);
652 if (ring->data == NULL) {
653 device_printf(sc->sc_dev, "could not allocate soft data\n");
654 error = ENOMEM;
655 goto fail;
656 }
657
658 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
659 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
660 IWI_MAX_NSEG, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
661 if (error != 0) {
662 device_printf(sc->sc_dev, "could not create data DMA tag\n");
663 goto fail;
664 }
665
666 for (i = 0; i < count; i++) {
667 error = bus_dmamap_create(ring->data_dmat, 0,
668 &ring->data[i].map);
669 if (error != 0) {
670 device_printf(sc->sc_dev, "could not create DMA map\n");
671 goto fail;
672 }
673 }
674
675 return 0;
676
677 fail: iwi_free_tx_ring(sc, ring);
678 return error;
679 }
680
681 static void
iwi_reset_tx_ring(struct iwi_softc * sc,struct iwi_tx_ring * ring)682 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
683 {
684 struct iwi_tx_data *data;
685 int i;
686
687 for (i = 0; i < ring->count; i++) {
688 data = &ring->data[i];
689
690 if (data->m != NULL) {
691 bus_dmamap_sync(ring->data_dmat, data->map,
692 BUS_DMASYNC_POSTWRITE);
693 bus_dmamap_unload(ring->data_dmat, data->map);
694 m_freem(data->m);
695 data->m = NULL;
696 }
697
698 if (data->ni != NULL) {
699 ieee80211_free_node(data->ni);
700 data->ni = NULL;
701 }
702 }
703
704 ring->queued = 0;
705 ring->cur = ring->next = 0;
706 }
707
708 static void
iwi_free_tx_ring(struct iwi_softc * sc,struct iwi_tx_ring * ring)709 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring)
710 {
711 struct iwi_tx_data *data;
712 int i;
713
714 if (ring->desc != NULL) {
715 bus_dmamap_sync(ring->desc_dmat, ring->desc_map,
716 BUS_DMASYNC_POSTWRITE);
717 bus_dmamap_unload(ring->desc_dmat, ring->desc_map);
718 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map);
719 }
720
721 if (ring->desc_dmat != NULL)
722 bus_dma_tag_destroy(ring->desc_dmat);
723
724 if (ring->data != NULL) {
725 for (i = 0; i < ring->count; i++) {
726 data = &ring->data[i];
727
728 if (data->m != NULL) {
729 bus_dmamap_sync(ring->data_dmat, data->map,
730 BUS_DMASYNC_POSTWRITE);
731 bus_dmamap_unload(ring->data_dmat, data->map);
732 m_freem(data->m);
733 }
734
735 if (data->ni != NULL)
736 ieee80211_free_node(data->ni);
737
738 if (data->map != NULL)
739 bus_dmamap_destroy(ring->data_dmat, data->map);
740 }
741
742 free(ring->data, M_DEVBUF);
743 }
744
745 if (ring->data_dmat != NULL)
746 bus_dma_tag_destroy(ring->data_dmat);
747 }
748
749 static int
iwi_alloc_rx_ring(struct iwi_softc * sc,struct iwi_rx_ring * ring,int count)750 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count)
751 {
752 struct iwi_rx_data *data;
753 int i, error;
754
755 ring->count = count;
756 ring->cur = 0;
757
758 ring->data = malloc(count * sizeof (struct iwi_rx_data), M_DEVBUF,
759 M_NOWAIT | M_ZERO);
760 if (ring->data == NULL) {
761 device_printf(sc->sc_dev, "could not allocate soft data\n");
762 error = ENOMEM;
763 goto fail;
764 }
765
766 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0,
767 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES,
768 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat);
769 if (error != 0) {
770 device_printf(sc->sc_dev, "could not create data DMA tag\n");
771 goto fail;
772 }
773
774 for (i = 0; i < count; i++) {
775 data = &ring->data[i];
776
777 error = bus_dmamap_create(ring->data_dmat, 0, &data->map);
778 if (error != 0) {
779 device_printf(sc->sc_dev, "could not create DMA map\n");
780 goto fail;
781 }
782
783 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
784 if (data->m == NULL) {
785 device_printf(sc->sc_dev,
786 "could not allocate rx mbuf\n");
787 error = ENOMEM;
788 goto fail;
789 }
790
791 error = bus_dmamap_load(ring->data_dmat, data->map,
792 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
793 &data->physaddr, 0);
794 if (error != 0) {
795 device_printf(sc->sc_dev,
796 "could not load rx buf DMA map");
797 goto fail;
798 }
799
800 data->reg = IWI_CSR_RX_BASE + i * 4;
801 }
802
803 return 0;
804
805 fail: iwi_free_rx_ring(sc, ring);
806 return error;
807 }
808
809 static void
iwi_reset_rx_ring(struct iwi_softc * sc,struct iwi_rx_ring * ring)810 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
811 {
812 ring->cur = 0;
813 }
814
815 static void
iwi_free_rx_ring(struct iwi_softc * sc,struct iwi_rx_ring * ring)816 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring)
817 {
818 struct iwi_rx_data *data;
819 int i;
820
821 if (ring->data != NULL) {
822 for (i = 0; i < ring->count; i++) {
823 data = &ring->data[i];
824
825 if (data->m != NULL) {
826 bus_dmamap_sync(ring->data_dmat, data->map,
827 BUS_DMASYNC_POSTREAD);
828 bus_dmamap_unload(ring->data_dmat, data->map);
829 m_freem(data->m);
830 }
831
832 if (data->map != NULL)
833 bus_dmamap_destroy(ring->data_dmat, data->map);
834 }
835
836 free(ring->data, M_DEVBUF);
837 }
838
839 if (ring->data_dmat != NULL)
840 bus_dma_tag_destroy(ring->data_dmat);
841 }
842
843 static int
iwi_shutdown(device_t dev)844 iwi_shutdown(device_t dev)
845 {
846 struct iwi_softc *sc = device_get_softc(dev);
847
848 iwi_stop(sc);
849 iwi_put_firmware(sc); /* ??? XXX */
850
851 return 0;
852 }
853
854 static int
iwi_suspend(device_t dev)855 iwi_suspend(device_t dev)
856 {
857 struct iwi_softc *sc = device_get_softc(dev);
858 struct ieee80211com *ic = sc->sc_ifp->if_l2com;
859
860 ieee80211_suspend_all(ic);
861 return 0;
862 }
863
864 static int
iwi_resume(device_t dev)865 iwi_resume(device_t dev)
866 {
867 struct iwi_softc *sc = device_get_softc(dev);
868 struct ieee80211com *ic = sc->sc_ifp->if_l2com;
869
870 pci_write_config(dev, 0x41, 0, 1);
871
872 ieee80211_resume_all(ic);
873 return 0;
874 }
875
876 static struct ieee80211_node *
iwi_node_alloc(struct ieee80211vap * vap,const uint8_t mac[IEEE80211_ADDR_LEN])877 iwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
878 {
879 struct iwi_node *in;
880
881 in = malloc(sizeof (struct iwi_node), M_80211_NODE, M_NOWAIT | M_ZERO);
882 if (in == NULL)
883 return NULL;
884 /* XXX assign sta table entry for adhoc */
885 in->in_station = -1;
886
887 return &in->in_node;
888 }
889
890 static void
iwi_node_free(struct ieee80211_node * ni)891 iwi_node_free(struct ieee80211_node *ni)
892 {
893 struct ieee80211com *ic = ni->ni_ic;
894 struct iwi_softc *sc = ic->ic_ifp->if_softc;
895 struct iwi_node *in = (struct iwi_node *)ni;
896
897 if (in->in_station != -1) {
898 DPRINTF(("%s mac %6D station %u\n", __func__,
899 ni->ni_macaddr, ":", in->in_station));
900 free_unr(sc->sc_unr, in->in_station);
901 }
902
903 sc->sc_node_free(ni);
904 }
905
906 /*
907 * Convert h/w rate code to IEEE rate code.
908 */
909 static int
iwi_cvtrate(int iwirate)910 iwi_cvtrate(int iwirate)
911 {
912 switch (iwirate) {
913 case IWI_RATE_DS1: return 2;
914 case IWI_RATE_DS2: return 4;
915 case IWI_RATE_DS5: return 11;
916 case IWI_RATE_DS11: return 22;
917 case IWI_RATE_OFDM6: return 12;
918 case IWI_RATE_OFDM9: return 18;
919 case IWI_RATE_OFDM12: return 24;
920 case IWI_RATE_OFDM18: return 36;
921 case IWI_RATE_OFDM24: return 48;
922 case IWI_RATE_OFDM36: return 72;
923 case IWI_RATE_OFDM48: return 96;
924 case IWI_RATE_OFDM54: return 108;
925 }
926 return 0;
927 }
928
929 /*
930 * The firmware automatically adapts the transmit speed. We report its current
931 * value here.
932 */
933 static void
iwi_media_status(struct ifnet * ifp,struct ifmediareq * imr)934 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr)
935 {
936 struct ieee80211vap *vap = ifp->if_softc;
937 struct ieee80211com *ic = vap->iv_ic;
938 struct iwi_softc *sc = ic->ic_ifp->if_softc;
939
940 /* read current transmission rate from adapter */
941 vap->iv_bss->ni_txrate =
942 iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE));
943 ieee80211_media_status(ifp, imr);
944 }
945
946 static int
iwi_newstate(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)947 iwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
948 {
949 struct iwi_vap *ivp = IWI_VAP(vap);
950 struct ieee80211com *ic = vap->iv_ic;
951 struct ifnet *ifp = ic->ic_ifp;
952 struct iwi_softc *sc = ifp->if_softc;
953 IWI_LOCK_DECL;
954
955 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__,
956 ieee80211_state_name[vap->iv_state],
957 ieee80211_state_name[nstate], sc->flags));
958
959 IEEE80211_UNLOCK(ic);
960 IWI_LOCK(sc);
961 switch (nstate) {
962 case IEEE80211_S_INIT:
963 /*
964 * NB: don't try to do this if iwi_stop_master has
965 * shutdown the firmware and disabled interrupts.
966 */
967 if (vap->iv_state == IEEE80211_S_RUN &&
968 (sc->flags & IWI_FLAG_FW_INITED))
969 iwi_disassociate(sc, 0);
970 break;
971 case IEEE80211_S_AUTH:
972 iwi_auth_and_assoc(sc, vap);
973 break;
974 case IEEE80211_S_RUN:
975 if (vap->iv_opmode == IEEE80211_M_IBSS &&
976 vap->iv_state == IEEE80211_S_SCAN) {
977 /*
978 * XXX when joining an ibss network we are called
979 * with a SCAN -> RUN transition on scan complete.
980 * Use that to call iwi_auth_and_assoc. On completing
981 * the join we are then called again with an
982 * AUTH -> RUN transition and we want to do nothing.
983 * This is all totally bogus and needs to be redone.
984 */
985 iwi_auth_and_assoc(sc, vap);
986 } else if (vap->iv_opmode == IEEE80211_M_MONITOR)
987 ieee80211_runtask(ic, &sc->sc_monitortask);
988 break;
989 case IEEE80211_S_ASSOC:
990 /*
991 * If we are transitioning from AUTH then just wait
992 * for the ASSOC status to come back from the firmware.
993 * Otherwise we need to issue the association request.
994 */
995 if (vap->iv_state == IEEE80211_S_AUTH)
996 break;
997 iwi_auth_and_assoc(sc, vap);
998 break;
999 default:
1000 break;
1001 }
1002 IWI_UNLOCK(sc);
1003 IEEE80211_LOCK(ic);
1004 return ivp->iwi_newstate(vap, nstate, arg);
1005 }
1006
1007 /*
1008 * WME parameters coming from IEEE 802.11e specification. These values are
1009 * already declared in ieee80211_proto.c, but they are static so they can't
1010 * be reused here.
1011 */
1012 static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = {
1013 { 0, 3, 5, 7, 0 }, /* WME_AC_BE */
1014 { 0, 3, 5, 10, 0 }, /* WME_AC_BK */
1015 { 0, 2, 4, 5, 188 }, /* WME_AC_VI */
1016 { 0, 2, 3, 4, 102 } /* WME_AC_VO */
1017 };
1018
1019 static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = {
1020 { 0, 3, 4, 6, 0 }, /* WME_AC_BE */
1021 { 0, 3, 4, 10, 0 }, /* WME_AC_BK */
1022 { 0, 2, 3, 4, 94 }, /* WME_AC_VI */
1023 { 0, 2, 2, 3, 47 } /* WME_AC_VO */
1024 };
1025 #define IWI_EXP2(v) htole16((1 << (v)) - 1)
1026 #define IWI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v))
1027
1028 static void
iwi_wme_init(struct iwi_softc * sc)1029 iwi_wme_init(struct iwi_softc *sc)
1030 {
1031 const struct wmeParams *wmep;
1032 int ac;
1033
1034 memset(sc->wme, 0, sizeof sc->wme);
1035 for (ac = 0; ac < WME_NUM_AC; ac++) {
1036 /* set WME values for CCK modulation */
1037 wmep = &iwi_wme_cck_params[ac];
1038 sc->wme[1].aifsn[ac] = wmep->wmep_aifsn;
1039 sc->wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1040 sc->wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1041 sc->wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1042 sc->wme[1].acm[ac] = wmep->wmep_acm;
1043
1044 /* set WME values for OFDM modulation */
1045 wmep = &iwi_wme_ofdm_params[ac];
1046 sc->wme[2].aifsn[ac] = wmep->wmep_aifsn;
1047 sc->wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1048 sc->wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1049 sc->wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1050 sc->wme[2].acm[ac] = wmep->wmep_acm;
1051 }
1052 }
1053
1054 static int
iwi_wme_setparams(struct iwi_softc * sc,struct ieee80211com * ic)1055 iwi_wme_setparams(struct iwi_softc *sc, struct ieee80211com *ic)
1056 {
1057 const struct wmeParams *wmep;
1058 int ac;
1059
1060 for (ac = 0; ac < WME_NUM_AC; ac++) {
1061 /* set WME values for current operating mode */
1062 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac];
1063 sc->wme[0].aifsn[ac] = wmep->wmep_aifsn;
1064 sc->wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin);
1065 sc->wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax);
1066 sc->wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit);
1067 sc->wme[0].acm[ac] = wmep->wmep_acm;
1068 }
1069
1070 DPRINTF(("Setting WME parameters\n"));
1071 return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, sc->wme, sizeof sc->wme);
1072 }
1073 #undef IWI_USEC
1074 #undef IWI_EXP2
1075
1076 static void
iwi_update_wme(void * arg,int npending)1077 iwi_update_wme(void *arg, int npending)
1078 {
1079 struct ieee80211com *ic = arg;
1080 struct iwi_softc *sc = ic->ic_ifp->if_softc;
1081 IWI_LOCK_DECL;
1082
1083 IWI_LOCK(sc);
1084 (void) iwi_wme_setparams(sc, ic);
1085 IWI_UNLOCK(sc);
1086 }
1087
1088 static int
iwi_wme_update(struct ieee80211com * ic)1089 iwi_wme_update(struct ieee80211com *ic)
1090 {
1091 struct iwi_softc *sc = ic->ic_ifp->if_softc;
1092 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1093
1094 /*
1095 * We may be called to update the WME parameters in
1096 * the adapter at various places. If we're already
1097 * associated then initiate the request immediately;
1098 * otherwise we assume the params will get sent down
1099 * to the adapter as part of the work iwi_auth_and_assoc
1100 * does.
1101 */
1102 if (vap->iv_state == IEEE80211_S_RUN)
1103 ieee80211_runtask(ic, &sc->sc_wmetask);
1104 return (0);
1105 }
1106
1107 static int
iwi_wme_setie(struct iwi_softc * sc)1108 iwi_wme_setie(struct iwi_softc *sc)
1109 {
1110 struct ieee80211_wme_info wme;
1111
1112 memset(&wme, 0, sizeof wme);
1113 wme.wme_id = IEEE80211_ELEMID_VENDOR;
1114 wme.wme_len = sizeof (struct ieee80211_wme_info) - 2;
1115 wme.wme_oui[0] = 0x00;
1116 wme.wme_oui[1] = 0x50;
1117 wme.wme_oui[2] = 0xf2;
1118 wme.wme_type = WME_OUI_TYPE;
1119 wme.wme_subtype = WME_INFO_OUI_SUBTYPE;
1120 wme.wme_version = WME_VERSION;
1121 wme.wme_info = 0;
1122
1123 DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len));
1124 return iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme);
1125 }
1126
1127 /*
1128 * Read 16 bits at address 'addr' from the serial EEPROM.
1129 */
1130 static uint16_t
iwi_read_prom_word(struct iwi_softc * sc,uint8_t addr)1131 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr)
1132 {
1133 uint32_t tmp;
1134 uint16_t val;
1135 int n;
1136
1137 /* clock C once before the first command */
1138 IWI_EEPROM_CTL(sc, 0);
1139 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1140 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1141 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1142
1143 /* write start bit (1) */
1144 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1145 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1146
1147 /* write READ opcode (10) */
1148 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D);
1149 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C);
1150 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1151 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1152
1153 /* write address A7-A0 */
1154 for (n = 7; n >= 0; n--) {
1155 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1156 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D));
1157 IWI_EEPROM_CTL(sc, IWI_EEPROM_S |
1158 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C);
1159 }
1160
1161 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1162
1163 /* read data Q15-Q0 */
1164 val = 0;
1165 for (n = 15; n >= 0; n--) {
1166 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C);
1167 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1168 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL);
1169 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n;
1170 }
1171
1172 IWI_EEPROM_CTL(sc, 0);
1173
1174 /* clear Chip Select and clock C */
1175 IWI_EEPROM_CTL(sc, IWI_EEPROM_S);
1176 IWI_EEPROM_CTL(sc, 0);
1177 IWI_EEPROM_CTL(sc, IWI_EEPROM_C);
1178
1179 return val;
1180 }
1181
1182 static void
iwi_setcurchan(struct iwi_softc * sc,int chan)1183 iwi_setcurchan(struct iwi_softc *sc, int chan)
1184 {
1185 struct ifnet *ifp = sc->sc_ifp;
1186 struct ieee80211com *ic = ifp->if_l2com;
1187
1188 sc->curchan = chan;
1189 ieee80211_radiotap_chan_change(ic);
1190 }
1191
1192 static void
iwi_frame_intr(struct iwi_softc * sc,struct iwi_rx_data * data,int i,struct iwi_frame * frame)1193 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i,
1194 struct iwi_frame *frame)
1195 {
1196 struct ifnet *ifp = sc->sc_ifp;
1197 struct ieee80211com *ic = ifp->if_l2com;
1198 struct mbuf *mnew, *m;
1199 struct ieee80211_node *ni;
1200 int type, error, framelen;
1201 int8_t rssi, nf;
1202 IWI_LOCK_DECL;
1203
1204 framelen = le16toh(frame->len);
1205 if (framelen < IEEE80211_MIN_LEN || framelen > MCLBYTES) {
1206 /*
1207 * XXX >MCLBYTES is bogus as it means the h/w dma'd
1208 * out of bounds; need to figure out how to limit
1209 * frame size in the firmware
1210 */
1211 /* XXX stat */
1212 DPRINTFN(1,
1213 ("drop rx frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1214 le16toh(frame->len), frame->chan, frame->rssi,
1215 frame->rssi_dbm));
1216 return;
1217 }
1218
1219 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u rssi_dbm=%u\n",
1220 le16toh(frame->len), frame->chan, frame->rssi, frame->rssi_dbm));
1221
1222 if (frame->chan != sc->curchan)
1223 iwi_setcurchan(sc, frame->chan);
1224
1225 /*
1226 * Try to allocate a new mbuf for this ring element and load it before
1227 * processing the current mbuf. If the ring element cannot be loaded,
1228 * drop the received packet and reuse the old mbuf. In the unlikely
1229 * case that the old mbuf can't be reloaded either, explicitly panic.
1230 */
1231 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
1232 if (mnew == NULL) {
1233 ifp->if_ierrors++;
1234 return;
1235 }
1236
1237 bus_dmamap_unload(sc->rxq.data_dmat, data->map);
1238
1239 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1240 mtod(mnew, void *), MCLBYTES, iwi_dma_map_addr, &data->physaddr,
1241 0);
1242 if (error != 0) {
1243 m_freem(mnew);
1244
1245 /* try to reload the old mbuf */
1246 error = bus_dmamap_load(sc->rxq.data_dmat, data->map,
1247 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr,
1248 &data->physaddr, 0);
1249 if (error != 0) {
1250 /* very unlikely that it will fail... */
1251 panic("%s: could not load old rx mbuf",
1252 device_get_name(sc->sc_dev));
1253 }
1254 ifp->if_ierrors++;
1255 return;
1256 }
1257
1258 /*
1259 * New mbuf successfully loaded, update Rx ring and continue
1260 * processing.
1261 */
1262 m = data->m;
1263 data->m = mnew;
1264 CSR_WRITE_4(sc, data->reg, data->physaddr);
1265
1266 /* finalize mbuf */
1267 m->m_pkthdr.rcvif = ifp;
1268 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) +
1269 sizeof (struct iwi_frame) + framelen;
1270
1271 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame));
1272
1273 rssi = frame->rssi_dbm;
1274 nf = -95;
1275 if (ieee80211_radiotap_active(ic)) {
1276 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap;
1277
1278 tap->wr_flags = 0;
1279 tap->wr_antsignal = rssi;
1280 tap->wr_antnoise = nf;
1281 tap->wr_rate = iwi_cvtrate(frame->rate);
1282 tap->wr_antenna = frame->antenna;
1283 }
1284 IWI_UNLOCK(sc);
1285
1286 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *));
1287 if (ni != NULL) {
1288 type = ieee80211_input(ni, m, rssi, nf);
1289 ieee80211_free_node(ni);
1290 } else
1291 type = ieee80211_input_all(ic, m, rssi, nf);
1292
1293 IWI_LOCK(sc);
1294 if (sc->sc_softled) {
1295 /*
1296 * Blink for any data frame. Otherwise do a
1297 * heartbeat-style blink when idle. The latter
1298 * is mainly for station mode where we depend on
1299 * periodic beacon frames to trigger the poll event.
1300 */
1301 if (type == IEEE80211_FC0_TYPE_DATA) {
1302 sc->sc_rxrate = frame->rate;
1303 iwi_led_event(sc, IWI_LED_RX);
1304 } else if (ticks - sc->sc_ledevent >= sc->sc_ledidle)
1305 iwi_led_event(sc, IWI_LED_POLL);
1306 }
1307 }
1308
1309 /*
1310 * Check for an association response frame to see if QoS
1311 * has been negotiated. We parse just enough to figure
1312 * out if we're supposed to use QoS. The proper solution
1313 * is to pass the frame up so ieee80211_input can do the
1314 * work but that's made hard by how things currently are
1315 * done in the driver.
1316 */
1317 static void
iwi_checkforqos(struct ieee80211vap * vap,const struct ieee80211_frame * wh,int len)1318 iwi_checkforqos(struct ieee80211vap *vap,
1319 const struct ieee80211_frame *wh, int len)
1320 {
1321 #define SUBTYPE(wh) ((wh)->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
1322 const uint8_t *frm, *efrm, *wme;
1323 struct ieee80211_node *ni;
1324 uint16_t capinfo, status, associd;
1325
1326 /* NB: +8 for capinfo, status, associd, and first ie */
1327 if (!(sizeof(*wh)+8 < len && len < IEEE80211_MAX_LEN) ||
1328 SUBTYPE(wh) != IEEE80211_FC0_SUBTYPE_ASSOC_RESP)
1329 return;
1330 /*
1331 * asresp frame format
1332 * [2] capability information
1333 * [2] status
1334 * [2] association ID
1335 * [tlv] supported rates
1336 * [tlv] extended supported rates
1337 * [tlv] WME
1338 */
1339 frm = (const uint8_t *)&wh[1];
1340 efrm = ((const uint8_t *) wh) + len;
1341
1342 capinfo = le16toh(*(const uint16_t *)frm);
1343 frm += 2;
1344 status = le16toh(*(const uint16_t *)frm);
1345 frm += 2;
1346 associd = le16toh(*(const uint16_t *)frm);
1347 frm += 2;
1348
1349 wme = NULL;
1350 while (efrm - frm > 1) {
1351 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
1352 switch (*frm) {
1353 case IEEE80211_ELEMID_VENDOR:
1354 if (iswmeoui(frm))
1355 wme = frm;
1356 break;
1357 }
1358 frm += frm[1] + 2;
1359 }
1360
1361 ni = vap->iv_bss;
1362 ni->ni_capinfo = capinfo;
1363 ni->ni_associd = associd & 0x3fff;
1364 if (wme != NULL)
1365 ni->ni_flags |= IEEE80211_NODE_QOS;
1366 else
1367 ni->ni_flags &= ~IEEE80211_NODE_QOS;
1368 #undef SUBTYPE
1369 }
1370
1371 /*
1372 * Task queue callbacks for iwi_notification_intr used to avoid LOR's.
1373 */
1374
1375 static void
iwi_notification_intr(struct iwi_softc * sc,struct iwi_notif * notif)1376 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif)
1377 {
1378 struct ifnet *ifp = sc->sc_ifp;
1379 struct ieee80211com *ic = ifp->if_l2com;
1380 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1381 struct iwi_notif_scan_channel *chan;
1382 struct iwi_notif_scan_complete *scan;
1383 struct iwi_notif_authentication *auth;
1384 struct iwi_notif_association *assoc;
1385 struct iwi_notif_beacon_state *beacon;
1386
1387 switch (notif->type) {
1388 case IWI_NOTIF_TYPE_SCAN_CHANNEL:
1389 chan = (struct iwi_notif_scan_channel *)(notif + 1);
1390
1391 DPRINTFN(3, ("Scan of channel %u complete (%u)\n",
1392 ieee80211_ieee2mhz(chan->nchan, 0), chan->nchan));
1393
1394 /* Reset the timer, the scan is still going */
1395 sc->sc_state_timer = 3;
1396 break;
1397
1398 case IWI_NOTIF_TYPE_SCAN_COMPLETE:
1399 scan = (struct iwi_notif_scan_complete *)(notif + 1);
1400
1401 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan,
1402 scan->status));
1403
1404 IWI_STATE_END(sc, IWI_FW_SCANNING);
1405
1406 /*
1407 * Monitor mode works by doing a passive scan to set
1408 * the channel and enable rx. Because we don't want
1409 * to abort a scan lest the firmware crash we scan
1410 * for a short period of time and automatically restart
1411 * the scan when notified the sweep has completed.
1412 */
1413 if (vap->iv_opmode == IEEE80211_M_MONITOR) {
1414 ieee80211_runtask(ic, &sc->sc_monitortask);
1415 break;
1416 }
1417
1418 if (scan->status == IWI_SCAN_COMPLETED) {
1419 /* NB: don't need to defer, net80211 does it for us */
1420 ieee80211_scan_next(vap);
1421 }
1422 break;
1423
1424 case IWI_NOTIF_TYPE_AUTHENTICATION:
1425 auth = (struct iwi_notif_authentication *)(notif + 1);
1426 switch (auth->state) {
1427 case IWI_AUTH_SUCCESS:
1428 DPRINTFN(2, ("Authentication succeeeded\n"));
1429 ieee80211_new_state(vap, IEEE80211_S_ASSOC, -1);
1430 break;
1431 case IWI_AUTH_FAIL:
1432 /*
1433 * These are delivered as an unsolicited deauth
1434 * (e.g. due to inactivity) or in response to an
1435 * associate request.
1436 */
1437 sc->flags &= ~IWI_FLAG_ASSOCIATED;
1438 if (vap->iv_state != IEEE80211_S_RUN) {
1439 DPRINTFN(2, ("Authentication failed\n"));
1440 vap->iv_stats.is_rx_auth_fail++;
1441 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1442 } else {
1443 DPRINTFN(2, ("Deauthenticated\n"));
1444 vap->iv_stats.is_rx_deauth++;
1445 }
1446 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1447 break;
1448 case IWI_AUTH_SENT_1:
1449 case IWI_AUTH_RECV_2:
1450 case IWI_AUTH_SEQ1_PASS:
1451 break;
1452 case IWI_AUTH_SEQ1_FAIL:
1453 DPRINTFN(2, ("Initial authentication handshake failed; "
1454 "you probably need shared key\n"));
1455 vap->iv_stats.is_rx_auth_fail++;
1456 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1457 /* XXX retry shared key when in auto */
1458 break;
1459 default:
1460 device_printf(sc->sc_dev,
1461 "unknown authentication state %u\n", auth->state);
1462 break;
1463 }
1464 break;
1465
1466 case IWI_NOTIF_TYPE_ASSOCIATION:
1467 assoc = (struct iwi_notif_association *)(notif + 1);
1468 switch (assoc->state) {
1469 case IWI_AUTH_SUCCESS:
1470 /* re-association, do nothing */
1471 break;
1472 case IWI_ASSOC_SUCCESS:
1473 DPRINTFN(2, ("Association succeeded\n"));
1474 sc->flags |= IWI_FLAG_ASSOCIATED;
1475 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1476 iwi_checkforqos(vap,
1477 (const struct ieee80211_frame *)(assoc+1),
1478 le16toh(notif->len) - sizeof(*assoc) - 1);
1479 ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
1480 break;
1481 case IWI_ASSOC_INIT:
1482 sc->flags &= ~IWI_FLAG_ASSOCIATED;
1483 switch (sc->fw_state) {
1484 case IWI_FW_ASSOCIATING:
1485 DPRINTFN(2, ("Association failed\n"));
1486 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
1487 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1488 break;
1489
1490 case IWI_FW_DISASSOCIATING:
1491 DPRINTFN(2, ("Dissassociated\n"));
1492 IWI_STATE_END(sc, IWI_FW_DISASSOCIATING);
1493 vap->iv_stats.is_rx_disassoc++;
1494 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1);
1495 break;
1496 }
1497 break;
1498 default:
1499 device_printf(sc->sc_dev,
1500 "unknown association state %u\n", assoc->state);
1501 break;
1502 }
1503 break;
1504
1505 case IWI_NOTIF_TYPE_BEACON:
1506 /* XXX check struct length */
1507 beacon = (struct iwi_notif_beacon_state *)(notif + 1);
1508
1509 DPRINTFN(5, ("Beacon state (%u, %u)\n",
1510 beacon->state, le32toh(beacon->number)));
1511
1512 if (beacon->state == IWI_BEACON_MISS) {
1513 /*
1514 * The firmware notifies us of every beacon miss
1515 * so we need to track the count against the
1516 * configured threshold before notifying the
1517 * 802.11 layer.
1518 * XXX try to roam, drop assoc only on much higher count
1519 */
1520 if (le32toh(beacon->number) >= vap->iv_bmissthreshold) {
1521 DPRINTF(("Beacon miss: %u >= %u\n",
1522 le32toh(beacon->number),
1523 vap->iv_bmissthreshold));
1524 vap->iv_stats.is_beacon_miss++;
1525 /*
1526 * It's pointless to notify the 802.11 layer
1527 * as it'll try to send a probe request (which
1528 * we'll discard) and then timeout and drop us
1529 * into scan state. Instead tell the firmware
1530 * to disassociate and then on completion we'll
1531 * kick the state machine to scan.
1532 */
1533 ieee80211_runtask(ic, &sc->sc_disassoctask);
1534 }
1535 }
1536 break;
1537
1538 case IWI_NOTIF_TYPE_CALIBRATION:
1539 case IWI_NOTIF_TYPE_NOISE:
1540 case IWI_NOTIF_TYPE_LINK_QUALITY:
1541 DPRINTFN(5, ("Notification (%u)\n", notif->type));
1542 break;
1543
1544 default:
1545 DPRINTF(("unknown notification type %u flags 0x%x len %u\n",
1546 notif->type, notif->flags, le16toh(notif->len)));
1547 break;
1548 }
1549 }
1550
1551 static void
iwi_rx_intr(struct iwi_softc * sc)1552 iwi_rx_intr(struct iwi_softc *sc)
1553 {
1554 struct iwi_rx_data *data;
1555 struct iwi_hdr *hdr;
1556 uint32_t hw;
1557
1558 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX);
1559
1560 for (; sc->rxq.cur != hw;) {
1561 data = &sc->rxq.data[sc->rxq.cur];
1562
1563 bus_dmamap_sync(sc->rxq.data_dmat, data->map,
1564 BUS_DMASYNC_POSTREAD);
1565
1566 hdr = mtod(data->m, struct iwi_hdr *);
1567
1568 switch (hdr->type) {
1569 case IWI_HDR_TYPE_FRAME:
1570 iwi_frame_intr(sc, data, sc->rxq.cur,
1571 (struct iwi_frame *)(hdr + 1));
1572 break;
1573
1574 case IWI_HDR_TYPE_NOTIF:
1575 iwi_notification_intr(sc,
1576 (struct iwi_notif *)(hdr + 1));
1577 break;
1578
1579 default:
1580 device_printf(sc->sc_dev, "unknown hdr type %u\n",
1581 hdr->type);
1582 }
1583
1584 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur));
1585
1586 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT;
1587 }
1588
1589 /* tell the firmware what we have processed */
1590 hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1;
1591 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw);
1592 }
1593
1594 static void
iwi_tx_intr(struct iwi_softc * sc,struct iwi_tx_ring * txq)1595 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq)
1596 {
1597 struct ifnet *ifp = sc->sc_ifp;
1598 struct iwi_tx_data *data;
1599 uint32_t hw;
1600
1601 hw = CSR_READ_4(sc, txq->csr_ridx);
1602
1603 for (; txq->next != hw;) {
1604 data = &txq->data[txq->next];
1605
1606 bus_dmamap_sync(txq->data_dmat, data->map,
1607 BUS_DMASYNC_POSTWRITE);
1608 bus_dmamap_unload(txq->data_dmat, data->map);
1609 if (data->m->m_flags & M_TXCB)
1610 ieee80211_process_callback(data->ni, data->m, 0/*XXX*/);
1611 m_freem(data->m);
1612 data->m = NULL;
1613 ieee80211_free_node(data->ni);
1614 data->ni = NULL;
1615
1616 DPRINTFN(15, ("tx done idx=%u\n", txq->next));
1617
1618 ifp->if_opackets++;
1619
1620 txq->queued--;
1621 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT;
1622 }
1623
1624 sc->sc_tx_timer = 0;
1625 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1626
1627 if (sc->sc_softled)
1628 iwi_led_event(sc, IWI_LED_TX);
1629
1630 iwi_start_locked(ifp);
1631 }
1632
1633 static void
iwi_fatal_error_intr(struct iwi_softc * sc)1634 iwi_fatal_error_intr(struct iwi_softc *sc)
1635 {
1636 struct ifnet *ifp = sc->sc_ifp;
1637 struct ieee80211com *ic = ifp->if_l2com;
1638 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
1639
1640 device_printf(sc->sc_dev, "firmware error\n");
1641 if (vap != NULL)
1642 ieee80211_cancel_scan(vap);
1643 ieee80211_runtask(ic, &sc->sc_restarttask);
1644
1645 sc->flags &= ~IWI_FLAG_BUSY;
1646 sc->sc_busy_timer = 0;
1647 wakeup(sc);
1648 }
1649
1650 static void
iwi_radio_off_intr(struct iwi_softc * sc)1651 iwi_radio_off_intr(struct iwi_softc *sc)
1652 {
1653 struct ifnet *ifp = sc->sc_ifp;
1654 struct ieee80211com *ic = ifp->if_l2com;
1655
1656 ieee80211_runtask(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 ifnet * ifp,struct mbuf * m0,struct ieee80211_node * ni,int ac)1771 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni,
1772 int ac)
1773 {
1774 struct iwi_softc *sc = ifp->if_softc;
1775 struct ieee80211vap *vap = ni->ni_vap;
1776 struct ieee80211com *ic = ni->ni_ic;
1777 struct iwi_node *in = (struct iwi_node *)ni;
1778 const struct ieee80211_frame *wh;
1779 struct ieee80211_key *k;
1780 const struct chanAccParams *cap;
1781 struct iwi_tx_ring *txq = &sc->txq[ac];
1782 struct iwi_tx_data *data;
1783 struct iwi_tx_desc *desc;
1784 struct mbuf *mnew;
1785 bus_dma_segment_t segs[IWI_MAX_NSEG];
1786 int error, nsegs, hdrlen, i;
1787 int ismcast, flags, xflags, staid;
1788
1789 IWI_LOCK_ASSERT(sc);
1790 wh = mtod(m0, const struct ieee80211_frame *);
1791 /* NB: only data frames use this path */
1792 hdrlen = ieee80211_hdrsize(wh);
1793 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1);
1794 flags = xflags = 0;
1795
1796 if (!ismcast)
1797 flags |= IWI_DATA_FLAG_NEED_ACK;
1798 if (vap->iv_flags & IEEE80211_F_SHPREAMBLE)
1799 flags |= IWI_DATA_FLAG_SHPREAMBLE;
1800 if (IEEE80211_QOS_HAS_SEQ(wh)) {
1801 xflags |= IWI_DATA_XFLAG_QOS;
1802 cap = &ic->ic_wme.wme_chanParams;
1803 if (!cap->cap_wmeParams[ac].wmep_noackPolicy)
1804 flags &= ~IWI_DATA_FLAG_NEED_ACK;
1805 }
1806
1807 /*
1808 * This is only used in IBSS mode where the firmware expect an index
1809 * in a h/w table instead of a destination address.
1810 */
1811 if (vap->iv_opmode == IEEE80211_M_IBSS) {
1812 if (!ismcast) {
1813 if (in->in_station == -1) {
1814 in->in_station = alloc_unr(sc->sc_unr);
1815 if (in->in_station == -1) {
1816 /* h/w table is full */
1817 m_freem(m0);
1818 ieee80211_free_node(ni);
1819 ifp->if_oerrors++;
1820 return 0;
1821 }
1822 iwi_write_ibssnode(sc,
1823 ni->ni_macaddr, in->in_station);
1824 }
1825 staid = in->in_station;
1826 } else {
1827 /*
1828 * Multicast addresses have no associated node
1829 * so there will be no station entry. We reserve
1830 * entry 0 for one mcast address and use that.
1831 * If there are many being used this will be
1832 * expensive and we'll need to do a better job
1833 * but for now this handles the broadcast case.
1834 */
1835 if (!IEEE80211_ADDR_EQ(wh->i_addr1, sc->sc_mcast)) {
1836 IEEE80211_ADDR_COPY(sc->sc_mcast, wh->i_addr1);
1837 iwi_write_ibssnode(sc, sc->sc_mcast, 0);
1838 }
1839 staid = 0;
1840 }
1841 } else
1842 staid = 0;
1843
1844 if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
1845 k = ieee80211_crypto_encap(ni, m0);
1846 if (k == NULL) {
1847 m_freem(m0);
1848 return ENOBUFS;
1849 }
1850
1851 /* packet header may have moved, reset our local pointer */
1852 wh = mtod(m0, struct ieee80211_frame *);
1853 }
1854
1855 if (ieee80211_radiotap_active_vap(vap)) {
1856 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap;
1857
1858 tap->wt_flags = 0;
1859
1860 ieee80211_radiotap_tx(vap, m0);
1861 }
1862
1863 data = &txq->data[txq->cur];
1864 desc = &txq->desc[txq->cur];
1865
1866 /* save and trim IEEE802.11 header */
1867 m_copydata(m0, 0, hdrlen, (caddr_t)&desc->wh);
1868 m_adj(m0, hdrlen);
1869
1870 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, m0, segs,
1871 &nsegs, 0);
1872 if (error != 0 && error != EFBIG) {
1873 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n",
1874 error);
1875 m_freem(m0);
1876 return error;
1877 }
1878 if (error != 0) {
1879 mnew = m_defrag(m0, M_NOWAIT);
1880 if (mnew == NULL) {
1881 device_printf(sc->sc_dev,
1882 "could not defragment mbuf\n");
1883 m_freem(m0);
1884 return ENOBUFS;
1885 }
1886 m0 = mnew;
1887
1888 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map,
1889 m0, segs, &nsegs, 0);
1890 if (error != 0) {
1891 device_printf(sc->sc_dev,
1892 "could not map mbuf (error %d)\n", error);
1893 m_freem(m0);
1894 return error;
1895 }
1896 }
1897
1898 data->m = m0;
1899 data->ni = ni;
1900
1901 desc->hdr.type = IWI_HDR_TYPE_DATA;
1902 desc->hdr.flags = IWI_HDR_FLAG_IRQ;
1903 desc->station = staid;
1904 desc->cmd = IWI_DATA_CMD_TX;
1905 desc->len = htole16(m0->m_pkthdr.len);
1906 desc->flags = flags;
1907 desc->xflags = xflags;
1908
1909 #if 0
1910 if (vap->iv_flags & IEEE80211_F_PRIVACY)
1911 desc->wep_txkey = vap->iv_def_txkey;
1912 else
1913 #endif
1914 desc->flags |= IWI_DATA_FLAG_NO_WEP;
1915
1916 desc->nseg = htole32(nsegs);
1917 for (i = 0; i < nsegs; i++) {
1918 desc->seg_addr[i] = htole32(segs[i].ds_addr);
1919 desc->seg_len[i] = htole16(segs[i].ds_len);
1920 }
1921
1922 bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE);
1923 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE);
1924
1925 DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n",
1926 ac, txq->cur, le16toh(desc->len), nsegs));
1927
1928 txq->queued++;
1929 txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT;
1930 CSR_WRITE_4(sc, txq->csr_widx, txq->cur);
1931
1932 return 0;
1933 }
1934
1935 static int
iwi_raw_xmit(struct ieee80211_node * ni,struct mbuf * m,const struct ieee80211_bpf_params * params)1936 iwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
1937 const struct ieee80211_bpf_params *params)
1938 {
1939 /* no support; just discard */
1940 m_freem(m);
1941 ieee80211_free_node(ni);
1942 return 0;
1943 }
1944
1945 static void
iwi_start_locked(struct ifnet * ifp)1946 iwi_start_locked(struct ifnet *ifp)
1947 {
1948 struct iwi_softc *sc = ifp->if_softc;
1949 struct mbuf *m;
1950 struct ieee80211_node *ni;
1951 int ac;
1952
1953 IWI_LOCK_ASSERT(sc);
1954
1955 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1956 return;
1957
1958 for (;;) {
1959 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
1960 if (m == NULL)
1961 break;
1962 ac = M_WME_GETAC(m);
1963 if (sc->txq[ac].queued > IWI_TX_RING_COUNT - 8) {
1964 /* there is no place left in this ring; tail drop */
1965 /* XXX tail drop */
1966 IFQ_DRV_PREPEND(&ifp->if_snd, m);
1967 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
1968 break;
1969 }
1970
1971 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
1972 if (iwi_tx_start(ifp, m, ni, ac) != 0) {
1973 ieee80211_free_node(ni);
1974 ifp->if_oerrors++;
1975 break;
1976 }
1977
1978 sc->sc_tx_timer = 5;
1979 }
1980 }
1981
1982 static void
iwi_start(struct ifnet * ifp)1983 iwi_start(struct ifnet *ifp)
1984 {
1985 struct iwi_softc *sc = ifp->if_softc;
1986 IWI_LOCK_DECL;
1987
1988 IWI_LOCK(sc);
1989 iwi_start_locked(ifp);
1990 IWI_UNLOCK(sc);
1991 }
1992
1993 static void
iwi_watchdog(void * arg)1994 iwi_watchdog(void *arg)
1995 {
1996 struct iwi_softc *sc = arg;
1997 struct ifnet *ifp = sc->sc_ifp;
1998 struct ieee80211com *ic = ifp->if_l2com;
1999
2000 IWI_LOCK_ASSERT(sc);
2001
2002 if (sc->sc_tx_timer > 0) {
2003 if (--sc->sc_tx_timer == 0) {
2004 if_printf(ifp, "device timeout\n");
2005 ifp->if_oerrors++;
2006 ieee80211_runtask(ic, &sc->sc_restarttask);
2007 }
2008 }
2009 if (sc->sc_state_timer > 0) {
2010 if (--sc->sc_state_timer == 0) {
2011 if_printf(ifp, "firmware stuck in state %d, resetting\n",
2012 sc->fw_state);
2013 if (sc->fw_state == IWI_FW_SCANNING) {
2014 struct ieee80211com *ic = ifp->if_l2com;
2015 ieee80211_cancel_scan(TAILQ_FIRST(&ic->ic_vaps));
2016 }
2017 ieee80211_runtask(ic, &sc->sc_restarttask);
2018 sc->sc_state_timer = 3;
2019 }
2020 }
2021 if (sc->sc_busy_timer > 0) {
2022 if (--sc->sc_busy_timer == 0) {
2023 if_printf(ifp, "firmware command timeout, resetting\n");
2024 ieee80211_runtask(ic, &sc->sc_restarttask);
2025 }
2026 }
2027 callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
2028 }
2029
2030 static int
iwi_ioctl(struct ifnet * ifp,u_long cmd,caddr_t data)2031 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
2032 {
2033 struct iwi_softc *sc = ifp->if_softc;
2034 struct ieee80211com *ic = ifp->if_l2com;
2035 struct ifreq *ifr = (struct ifreq *) data;
2036 int error = 0, startall = 0;
2037 IWI_LOCK_DECL;
2038
2039 switch (cmd) {
2040 case SIOCSIFFLAGS:
2041 IWI_LOCK(sc);
2042 if (ifp->if_flags & IFF_UP) {
2043 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
2044 iwi_init_locked(sc);
2045 startall = 1;
2046 }
2047 } else {
2048 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
2049 iwi_stop_locked(sc);
2050 }
2051 IWI_UNLOCK(sc);
2052 if (startall)
2053 ieee80211_start_all(ic);
2054 break;
2055 case SIOCGIFMEDIA:
2056 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd);
2057 break;
2058 case SIOCGIFADDR:
2059 error = ether_ioctl(ifp, cmd, data);
2060 break;
2061 default:
2062 error = EINVAL;
2063 break;
2064 }
2065 return error;
2066 }
2067
2068 static void
iwi_stop_master(struct iwi_softc * sc)2069 iwi_stop_master(struct iwi_softc *sc)
2070 {
2071 uint32_t tmp;
2072 int ntries;
2073
2074 /* disable interrupts */
2075 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0);
2076
2077 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER);
2078 for (ntries = 0; ntries < 5; ntries++) {
2079 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2080 break;
2081 DELAY(10);
2082 }
2083 if (ntries == 5)
2084 device_printf(sc->sc_dev, "timeout waiting for master\n");
2085
2086 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2087 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET);
2088
2089 sc->flags &= ~IWI_FLAG_FW_INITED;
2090 }
2091
2092 static int
iwi_reset(struct iwi_softc * sc)2093 iwi_reset(struct iwi_softc *sc)
2094 {
2095 uint32_t tmp;
2096 int i, ntries;
2097
2098 iwi_stop_master(sc);
2099
2100 tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2101 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2102
2103 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST);
2104
2105 /* wait for clock stabilization */
2106 for (ntries = 0; ntries < 1000; ntries++) {
2107 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY)
2108 break;
2109 DELAY(200);
2110 }
2111 if (ntries == 1000) {
2112 device_printf(sc->sc_dev,
2113 "timeout waiting for clock stabilization\n");
2114 return EIO;
2115 }
2116
2117 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2118 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SOFT_RESET);
2119
2120 DELAY(10);
2121
2122 tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2123 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT);
2124
2125 /* clear NIC memory */
2126 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0);
2127 for (i = 0; i < 0xc000; i++)
2128 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2129
2130 return 0;
2131 }
2132
2133 static const struct iwi_firmware_ohdr *
iwi_setup_ofw(struct iwi_softc * sc,struct iwi_fw * fw)2134 iwi_setup_ofw(struct iwi_softc *sc, struct iwi_fw *fw)
2135 {
2136 const struct firmware *fp = fw->fp;
2137 const struct iwi_firmware_ohdr *hdr;
2138
2139 if (fp->datasize < sizeof (struct iwi_firmware_ohdr)) {
2140 device_printf(sc->sc_dev, "image '%s' too small\n", fp->name);
2141 return NULL;
2142 }
2143 hdr = (const struct iwi_firmware_ohdr *)fp->data;
2144 if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) ||
2145 (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) {
2146 device_printf(sc->sc_dev, "version for '%s' %d.%d != %d.%d\n",
2147 fp->name, IWI_FW_GET_MAJOR(le32toh(hdr->version)),
2148 IWI_FW_GET_MINOR(le32toh(hdr->version)), IWI_FW_REQ_MAJOR,
2149 IWI_FW_REQ_MINOR);
2150 return NULL;
2151 }
2152 fw->data = ((const char *) fp->data) + sizeof(struct iwi_firmware_ohdr);
2153 fw->size = fp->datasize - sizeof(struct iwi_firmware_ohdr);
2154 fw->name = fp->name;
2155 return hdr;
2156 }
2157
2158 static const struct iwi_firmware_ohdr *
iwi_setup_oucode(struct iwi_softc * sc,struct iwi_fw * fw)2159 iwi_setup_oucode(struct iwi_softc *sc, struct iwi_fw *fw)
2160 {
2161 const struct iwi_firmware_ohdr *hdr;
2162
2163 hdr = iwi_setup_ofw(sc, fw);
2164 if (hdr != NULL && le32toh(hdr->mode) != IWI_FW_MODE_UCODE) {
2165 device_printf(sc->sc_dev, "%s is not a ucode image\n",
2166 fw->name);
2167 hdr = NULL;
2168 }
2169 return hdr;
2170 }
2171
2172 static void
iwi_getfw(struct iwi_fw * fw,const char * fwname,struct iwi_fw * uc,const char * ucname)2173 iwi_getfw(struct iwi_fw *fw, const char *fwname,
2174 struct iwi_fw *uc, const char *ucname)
2175 {
2176 if (fw->fp == NULL)
2177 fw->fp = firmware_get(fwname);
2178 /* NB: pre-3.0 ucode is packaged separately */
2179 if (uc->fp == NULL && fw->fp != NULL && fw->fp->version < 300)
2180 uc->fp = firmware_get(ucname);
2181 }
2182
2183 /*
2184 * Get the required firmware images if not already loaded.
2185 * Note that we hold firmware images so long as the device
2186 * is marked up in case we need to reload them on device init.
2187 * This is necessary because we re-init the device sometimes
2188 * from a context where we cannot read from the filesystem
2189 * (e.g. from the taskqueue thread when rfkill is re-enabled).
2190 * XXX return 0 on success, 1 on error.
2191 *
2192 * NB: the order of get'ing and put'ing images here is
2193 * intentional to support handling firmware images bundled
2194 * by operating mode and/or all together in one file with
2195 * the boot firmware as "master".
2196 */
2197 static int
iwi_get_firmware(struct iwi_softc * sc,enum ieee80211_opmode opmode)2198 iwi_get_firmware(struct iwi_softc *sc, enum ieee80211_opmode opmode)
2199 {
2200 const struct iwi_firmware_hdr *hdr;
2201 const struct firmware *fp;
2202
2203 /* invalidate cached firmware on mode change */
2204 if (sc->fw_mode != opmode)
2205 iwi_put_firmware(sc);
2206
2207 switch (opmode) {
2208 case IEEE80211_M_STA:
2209 iwi_getfw(&sc->fw_fw, "iwi_bss", &sc->fw_uc, "iwi_ucode_bss");
2210 break;
2211 case IEEE80211_M_IBSS:
2212 iwi_getfw(&sc->fw_fw, "iwi_ibss", &sc->fw_uc, "iwi_ucode_ibss");
2213 break;
2214 case IEEE80211_M_MONITOR:
2215 iwi_getfw(&sc->fw_fw, "iwi_monitor",
2216 &sc->fw_uc, "iwi_ucode_monitor");
2217 break;
2218 default:
2219 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode);
2220 return EINVAL;
2221 }
2222 fp = sc->fw_fw.fp;
2223 if (fp == NULL) {
2224 device_printf(sc->sc_dev, "could not load firmware\n");
2225 goto bad;
2226 }
2227 if (fp->version < 300) {
2228 /*
2229 * Firmware prior to 3.0 was packaged as separate
2230 * boot, firmware, and ucode images. Verify the
2231 * ucode image was read in, retrieve the boot image
2232 * if needed, and check version stamps for consistency.
2233 * The version stamps in the data are also checked
2234 * above; this is a bit paranoid but is a cheap
2235 * safeguard against mis-packaging.
2236 */
2237 if (sc->fw_uc.fp == NULL) {
2238 device_printf(sc->sc_dev, "could not load ucode\n");
2239 goto bad;
2240 }
2241 if (sc->fw_boot.fp == NULL) {
2242 sc->fw_boot.fp = firmware_get("iwi_boot");
2243 if (sc->fw_boot.fp == NULL) {
2244 device_printf(sc->sc_dev,
2245 "could not load boot firmware\n");
2246 goto bad;
2247 }
2248 }
2249 if (sc->fw_boot.fp->version != sc->fw_fw.fp->version ||
2250 sc->fw_boot.fp->version != sc->fw_uc.fp->version) {
2251 device_printf(sc->sc_dev,
2252 "firmware version mismatch: "
2253 "'%s' is %d, '%s' is %d, '%s' is %d\n",
2254 sc->fw_boot.fp->name, sc->fw_boot.fp->version,
2255 sc->fw_uc.fp->name, sc->fw_uc.fp->version,
2256 sc->fw_fw.fp->name, sc->fw_fw.fp->version
2257 );
2258 goto bad;
2259 }
2260 /*
2261 * Check and setup each image.
2262 */
2263 if (iwi_setup_oucode(sc, &sc->fw_uc) == NULL ||
2264 iwi_setup_ofw(sc, &sc->fw_boot) == NULL ||
2265 iwi_setup_ofw(sc, &sc->fw_fw) == NULL)
2266 goto bad;
2267 } else {
2268 /*
2269 * Check and setup combined image.
2270 */
2271 if (fp->datasize < sizeof(struct iwi_firmware_hdr)) {
2272 device_printf(sc->sc_dev, "image '%s' too small\n",
2273 fp->name);
2274 goto bad;
2275 }
2276 hdr = (const struct iwi_firmware_hdr *)fp->data;
2277 if (fp->datasize < sizeof(*hdr) + le32toh(hdr->bsize) + le32toh(hdr->usize)
2278 + le32toh(hdr->fsize)) {
2279 device_printf(sc->sc_dev, "image '%s' too small (2)\n",
2280 fp->name);
2281 goto bad;
2282 }
2283 sc->fw_boot.data = ((const char *) fp->data) + sizeof(*hdr);
2284 sc->fw_boot.size = le32toh(hdr->bsize);
2285 sc->fw_boot.name = fp->name;
2286 sc->fw_uc.data = sc->fw_boot.data + sc->fw_boot.size;
2287 sc->fw_uc.size = le32toh(hdr->usize);
2288 sc->fw_uc.name = fp->name;
2289 sc->fw_fw.data = sc->fw_uc.data + sc->fw_uc.size;
2290 sc->fw_fw.size = le32toh(hdr->fsize);
2291 sc->fw_fw.name = fp->name;
2292 }
2293 #if 0
2294 device_printf(sc->sc_dev, "boot %d ucode %d fw %d bytes\n",
2295 sc->fw_boot.size, sc->fw_uc.size, sc->fw_fw.size);
2296 #endif
2297
2298 sc->fw_mode = opmode;
2299 return 0;
2300 bad:
2301 iwi_put_firmware(sc);
2302 return 1;
2303 }
2304
2305 static void
iwi_put_fw(struct iwi_fw * fw)2306 iwi_put_fw(struct iwi_fw *fw)
2307 {
2308 if (fw->fp != NULL) {
2309 firmware_put(fw->fp, FIRMWARE_UNLOAD);
2310 fw->fp = NULL;
2311 }
2312 fw->data = NULL;
2313 fw->size = 0;
2314 fw->name = NULL;
2315 }
2316
2317 /*
2318 * Release any cached firmware images.
2319 */
2320 static void
iwi_put_firmware(struct iwi_softc * sc)2321 iwi_put_firmware(struct iwi_softc *sc)
2322 {
2323 iwi_put_fw(&sc->fw_uc);
2324 iwi_put_fw(&sc->fw_fw);
2325 iwi_put_fw(&sc->fw_boot);
2326 }
2327
2328 static int
iwi_load_ucode(struct iwi_softc * sc,const struct iwi_fw * fw)2329 iwi_load_ucode(struct iwi_softc *sc, const struct iwi_fw *fw)
2330 {
2331 uint32_t tmp;
2332 const uint16_t *w;
2333 const char *uc = fw->data;
2334 size_t size = fw->size;
2335 int i, ntries, error;
2336
2337 IWI_LOCK_ASSERT(sc);
2338 error = 0;
2339 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) |
2340 IWI_RST_STOP_MASTER);
2341 for (ntries = 0; ntries < 5; ntries++) {
2342 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED)
2343 break;
2344 DELAY(10);
2345 }
2346 if (ntries == 5) {
2347 device_printf(sc->sc_dev, "timeout waiting for master\n");
2348 error = EIO;
2349 goto fail;
2350 }
2351
2352 MEM_WRITE_4(sc, 0x3000e0, 0x80000000);
2353 DELAY(5000);
2354
2355 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2356 tmp &= ~IWI_RST_PRINCETON_RESET;
2357 CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2358
2359 DELAY(5000);
2360 MEM_WRITE_4(sc, 0x3000e0, 0);
2361 DELAY(1000);
2362 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 1);
2363 DELAY(1000);
2364 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 0);
2365 DELAY(1000);
2366 MEM_WRITE_1(sc, 0x200000, 0x00);
2367 MEM_WRITE_1(sc, 0x200000, 0x40);
2368 DELAY(1000);
2369
2370 /* write microcode into adapter memory */
2371 for (w = (const uint16_t *)uc; size > 0; w++, size -= 2)
2372 MEM_WRITE_2(sc, 0x200010, htole16(*w));
2373
2374 MEM_WRITE_1(sc, 0x200000, 0x00);
2375 MEM_WRITE_1(sc, 0x200000, 0x80);
2376
2377 /* wait until we get an answer */
2378 for (ntries = 0; ntries < 100; ntries++) {
2379 if (MEM_READ_1(sc, 0x200000) & 1)
2380 break;
2381 DELAY(100);
2382 }
2383 if (ntries == 100) {
2384 device_printf(sc->sc_dev,
2385 "timeout waiting for ucode to initialize\n");
2386 error = EIO;
2387 goto fail;
2388 }
2389
2390 /* read the answer or the firmware will not initialize properly */
2391 for (i = 0; i < 7; i++)
2392 MEM_READ_4(sc, 0x200004);
2393
2394 MEM_WRITE_1(sc, 0x200000, 0x00);
2395
2396 fail:
2397 return error;
2398 }
2399
2400 /* macro to handle unaligned little endian data in firmware image */
2401 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24)
2402
2403 static int
iwi_load_firmware(struct iwi_softc * sc,const struct iwi_fw * fw)2404 iwi_load_firmware(struct iwi_softc *sc, const struct iwi_fw *fw)
2405 {
2406 u_char *p, *end;
2407 uint32_t sentinel, ctl, src, dst, sum, len, mlen, tmp;
2408 int ntries, error;
2409
2410 IWI_LOCK_ASSERT(sc);
2411
2412 /* copy firmware image to DMA memory */
2413 memcpy(sc->fw_virtaddr, fw->data, fw->size);
2414
2415 /* make sure the adapter will get up-to-date values */
2416 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_PREWRITE);
2417
2418 /* tell the adapter where the command blocks are stored */
2419 MEM_WRITE_4(sc, 0x3000a0, 0x27000);
2420
2421 /*
2422 * Store command blocks into adapter's internal memory using register
2423 * indirections. The adapter will read the firmware image through DMA
2424 * using information stored in command blocks.
2425 */
2426 src = sc->fw_physaddr;
2427 p = sc->fw_virtaddr;
2428 end = p + fw->size;
2429 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000);
2430
2431 while (p < end) {
2432 dst = GETLE32(p); p += 4; src += 4;
2433 len = GETLE32(p); p += 4; src += 4;
2434 p += len;
2435
2436 while (len > 0) {
2437 mlen = min(len, IWI_CB_MAXDATALEN);
2438
2439 ctl = IWI_CB_DEFAULT_CTL | mlen;
2440 sum = ctl ^ src ^ dst;
2441
2442 /* write a command block */
2443 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl);
2444 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src);
2445 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst);
2446 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum);
2447
2448 src += mlen;
2449 dst += mlen;
2450 len -= mlen;
2451 }
2452 }
2453
2454 /* write a fictive final command block (sentinel) */
2455 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR);
2456 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0);
2457
2458 tmp = CSR_READ_4(sc, IWI_CSR_RST);
2459 tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER);
2460 CSR_WRITE_4(sc, IWI_CSR_RST, tmp);
2461
2462 /* tell the adapter to start processing command blocks */
2463 MEM_WRITE_4(sc, 0x3000a4, 0x540100);
2464
2465 /* wait until the adapter reaches the sentinel */
2466 for (ntries = 0; ntries < 400; ntries++) {
2467 if (MEM_READ_4(sc, 0x3000d0) >= sentinel)
2468 break;
2469 DELAY(100);
2470 }
2471 /* sync dma, just in case */
2472 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_POSTWRITE);
2473 if (ntries == 400) {
2474 device_printf(sc->sc_dev,
2475 "timeout processing command blocks for %s firmware\n",
2476 fw->name);
2477 return EIO;
2478 }
2479
2480 /* we're done with command blocks processing */
2481 MEM_WRITE_4(sc, 0x3000a4, 0x540c00);
2482
2483 /* allow interrupts so we know when the firmware is ready */
2484 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK);
2485
2486 /* tell the adapter to initialize the firmware */
2487 CSR_WRITE_4(sc, IWI_CSR_RST, 0);
2488
2489 tmp = CSR_READ_4(sc, IWI_CSR_CTL);
2490 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY);
2491
2492 /* wait at most one second for firmware initialization to complete */
2493 if ((error = msleep(sc, &sc->sc_mtx, 0, "iwiinit", hz)) != 0) {
2494 device_printf(sc->sc_dev, "timeout waiting for %s firmware "
2495 "initialization to complete\n", fw->name);
2496 }
2497
2498 return error;
2499 }
2500
2501 static int
iwi_setpowermode(struct iwi_softc * sc,struct ieee80211vap * vap)2502 iwi_setpowermode(struct iwi_softc *sc, struct ieee80211vap *vap)
2503 {
2504 uint32_t data;
2505
2506 if (vap->iv_flags & IEEE80211_F_PMGTON) {
2507 /* XXX set more fine-grained operation */
2508 data = htole32(IWI_POWER_MODE_MAX);
2509 } else
2510 data = htole32(IWI_POWER_MODE_CAM);
2511
2512 DPRINTF(("Setting power mode to %u\n", le32toh(data)));
2513 return iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data);
2514 }
2515
2516 static int
iwi_setwepkeys(struct iwi_softc * sc,struct ieee80211vap * vap)2517 iwi_setwepkeys(struct iwi_softc *sc, struct ieee80211vap *vap)
2518 {
2519 struct iwi_wep_key wepkey;
2520 struct ieee80211_key *wk;
2521 int error, i;
2522
2523 for (i = 0; i < IEEE80211_WEP_NKID; i++) {
2524 wk = &vap->iv_nw_keys[i];
2525
2526 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY;
2527 wepkey.idx = i;
2528 wepkey.len = wk->wk_keylen;
2529 memset(wepkey.key, 0, sizeof wepkey.key);
2530 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen);
2531 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx,
2532 wepkey.len));
2533 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey,
2534 sizeof wepkey);
2535 if (error != 0)
2536 return error;
2537 }
2538 return 0;
2539 }
2540
2541 static int
iwi_config(struct iwi_softc * sc)2542 iwi_config(struct iwi_softc *sc)
2543 {
2544 struct ifnet *ifp = sc->sc_ifp;
2545 struct ieee80211com *ic = ifp->if_l2com;
2546 struct iwi_configuration config;
2547 struct iwi_rateset rs;
2548 struct iwi_txpower power;
2549 uint32_t data;
2550 int error, i;
2551
2552 IWI_LOCK_ASSERT(sc);
2553
2554 DPRINTF(("Setting MAC address to %6D\n", IF_LLADDR(ifp), ":"));
2555 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, IF_LLADDR(ifp),
2556 IEEE80211_ADDR_LEN);
2557 if (error != 0)
2558 return error;
2559
2560 memset(&config, 0, sizeof config);
2561 config.bluetooth_coexistence = sc->bluetooth;
2562 config.silence_threshold = 0x1e;
2563 config.antenna = sc->antenna;
2564 config.multicast_enabled = 1;
2565 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2566 config.disable_unicast_decryption = 1;
2567 config.disable_multicast_decryption = 1;
2568 if (ic->ic_opmode == IEEE80211_M_MONITOR) {
2569 config.allow_invalid_frames = 1;
2570 config.allow_beacon_and_probe_resp = 1;
2571 config.allow_mgt = 1;
2572 }
2573 DPRINTF(("Configuring adapter\n"));
2574 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2575 if (error != 0)
2576 return error;
2577 if (ic->ic_opmode == IEEE80211_M_IBSS) {
2578 power.mode = IWI_MODE_11B;
2579 power.nchan = 11;
2580 for (i = 0; i < 11; i++) {
2581 power.chan[i].chan = i + 1;
2582 power.chan[i].power = IWI_TXPOWER_MAX;
2583 }
2584 DPRINTF(("Setting .11b channels tx power\n"));
2585 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2586 if (error != 0)
2587 return error;
2588
2589 power.mode = IWI_MODE_11G;
2590 DPRINTF(("Setting .11g channels tx power\n"));
2591 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power);
2592 if (error != 0)
2593 return error;
2594 }
2595
2596 memset(&rs, 0, sizeof rs);
2597 rs.mode = IWI_MODE_11G;
2598 rs.type = IWI_RATESET_TYPE_SUPPORTED;
2599 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates;
2600 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates,
2601 rs.nrates);
2602 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates));
2603 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2604 if (error != 0)
2605 return error;
2606
2607 memset(&rs, 0, sizeof rs);
2608 rs.mode = IWI_MODE_11A;
2609 rs.type = IWI_RATESET_TYPE_SUPPORTED;
2610 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates;
2611 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates,
2612 rs.nrates);
2613 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates));
2614 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2615 if (error != 0)
2616 return error;
2617
2618 data = htole32(arc4random());
2619 DPRINTF(("Setting initialization vector to %u\n", le32toh(data)));
2620 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data);
2621 if (error != 0)
2622 return error;
2623
2624 /* enable adapter */
2625 DPRINTF(("Enabling adapter\n"));
2626 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0);
2627 }
2628
2629 static __inline void
set_scan_type(struct iwi_scan_ext * scan,int ix,int scan_type)2630 set_scan_type(struct iwi_scan_ext *scan, int ix, int scan_type)
2631 {
2632 uint8_t *st = &scan->scan_type[ix / 2];
2633 if (ix % 2)
2634 *st = (*st & 0xf0) | ((scan_type & 0xf) << 0);
2635 else
2636 *st = (*st & 0x0f) | ((scan_type & 0xf) << 4);
2637 }
2638
2639 static int
scan_type(const struct ieee80211_scan_state * ss,const struct ieee80211_channel * chan)2640 scan_type(const struct ieee80211_scan_state *ss,
2641 const struct ieee80211_channel *chan)
2642 {
2643 /* We can only set one essid for a directed scan */
2644 if (ss->ss_nssid != 0)
2645 return IWI_SCAN_TYPE_BDIRECTED;
2646 if ((ss->ss_flags & IEEE80211_SCAN_ACTIVE) &&
2647 (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0)
2648 return IWI_SCAN_TYPE_BROADCAST;
2649 return IWI_SCAN_TYPE_PASSIVE;
2650 }
2651
2652 static __inline int
scan_band(const struct ieee80211_channel * c)2653 scan_band(const struct ieee80211_channel *c)
2654 {
2655 return IEEE80211_IS_CHAN_5GHZ(c) ? IWI_CHAN_5GHZ : IWI_CHAN_2GHZ;
2656 }
2657
2658 static void
iwi_monitor_scan(void * arg,int npending)2659 iwi_monitor_scan(void *arg, int npending)
2660 {
2661 struct iwi_softc *sc = arg;
2662 IWI_LOCK_DECL;
2663
2664 IWI_LOCK(sc);
2665 (void) iwi_scanchan(sc, 2000, 0);
2666 IWI_UNLOCK(sc);
2667 }
2668
2669 /*
2670 * Start a scan on the current channel or all channels.
2671 */
2672 static int
iwi_scanchan(struct iwi_softc * sc,unsigned long maxdwell,int allchan)2673 iwi_scanchan(struct iwi_softc *sc, unsigned long maxdwell, int allchan)
2674 {
2675 struct ieee80211com *ic;
2676 struct ieee80211_channel *chan;
2677 struct ieee80211_scan_state *ss;
2678 struct iwi_scan_ext scan;
2679 int error = 0;
2680
2681 IWI_LOCK_ASSERT(sc);
2682 if (sc->fw_state == IWI_FW_SCANNING) {
2683 /*
2684 * This should not happen as we only trigger scan_next after
2685 * completion
2686 */
2687 DPRINTF(("%s: called too early - still scanning\n", __func__));
2688 return (EBUSY);
2689 }
2690 IWI_STATE_BEGIN(sc, IWI_FW_SCANNING);
2691
2692 ic = sc->sc_ifp->if_l2com;
2693 ss = ic->ic_scan;
2694
2695 memset(&scan, 0, sizeof scan);
2696 scan.full_scan_index = htole32(++sc->sc_scangen);
2697 scan.dwell_time[IWI_SCAN_TYPE_PASSIVE] = htole16(maxdwell);
2698 if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) {
2699 /*
2700 * Use very short dwell times for when we send probe request
2701 * frames. Without this bg scans hang. Ideally this should
2702 * be handled with early-termination as done by net80211 but
2703 * that's not feasible (aborting a scan is problematic).
2704 */
2705 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(30);
2706 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(30);
2707 } else {
2708 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(maxdwell);
2709 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(maxdwell);
2710 }
2711
2712 /* We can only set one essid for a directed scan */
2713 if (ss->ss_nssid != 0) {
2714 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ss->ss_ssid[0].ssid,
2715 ss->ss_ssid[0].len);
2716 if (error)
2717 return (error);
2718 }
2719
2720 if (allchan) {
2721 int i, next, band, b, bstart;
2722 /*
2723 * Convert scan list to run-length encoded channel list
2724 * the firmware requires (preserving the order setup by
2725 * net80211). The first entry in each run specifies the
2726 * band and the count of items in the run.
2727 */
2728 next = 0; /* next open slot */
2729 bstart = 0; /* NB: not needed, silence compiler */
2730 band = -1; /* NB: impossible value */
2731 KASSERT(ss->ss_last > 0, ("no channels"));
2732 for (i = 0; i < ss->ss_last; i++) {
2733 chan = ss->ss_chans[i];
2734 b = scan_band(chan);
2735 if (b != band) {
2736 if (band != -1)
2737 scan.channels[bstart] =
2738 (next - bstart) | band;
2739 /* NB: this allocates a slot for the run-len */
2740 band = b, bstart = next++;
2741 }
2742 if (next >= IWI_SCAN_CHANNELS) {
2743 DPRINTF(("truncating scan list\n"));
2744 break;
2745 }
2746 scan.channels[next] = ieee80211_chan2ieee(ic, chan);
2747 set_scan_type(&scan, next, scan_type(ss, chan));
2748 next++;
2749 }
2750 scan.channels[bstart] = (next - bstart) | band;
2751 } else {
2752 /* Scan the current channel only */
2753 chan = ic->ic_curchan;
2754 scan.channels[0] = 1 | scan_band(chan);
2755 scan.channels[1] = ieee80211_chan2ieee(ic, chan);
2756 set_scan_type(&scan, 1, scan_type(ss, chan));
2757 }
2758 #ifdef IWI_DEBUG
2759 if (iwi_debug > 0) {
2760 static const char *scantype[8] =
2761 { "PSTOP", "PASV", "DIR", "BCAST", "BDIR", "5", "6", "7" };
2762 int i;
2763 printf("Scan request: index %u dwell %d/%d/%d\n"
2764 , le32toh(scan.full_scan_index)
2765 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_PASSIVE])
2766 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BROADCAST])
2767 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED])
2768 );
2769 i = 0;
2770 do {
2771 int run = scan.channels[i];
2772 if (run == 0)
2773 break;
2774 printf("Scan %d %s channels:", run & 0x3f,
2775 run & IWI_CHAN_2GHZ ? "2.4GHz" : "5GHz");
2776 for (run &= 0x3f, i++; run > 0; run--, i++) {
2777 uint8_t type = scan.scan_type[i/2];
2778 printf(" %u/%s", scan.channels[i],
2779 scantype[(i & 1 ? type : type>>4) & 7]);
2780 }
2781 printf("\n");
2782 } while (i < IWI_SCAN_CHANNELS);
2783 }
2784 #endif
2785
2786 return (iwi_cmd(sc, IWI_CMD_SCAN_EXT, &scan, sizeof scan));
2787 }
2788
2789 static int
iwi_set_sensitivity(struct iwi_softc * sc,int8_t rssi_dbm)2790 iwi_set_sensitivity(struct iwi_softc *sc, int8_t rssi_dbm)
2791 {
2792 struct iwi_sensitivity sens;
2793
2794 DPRINTF(("Setting sensitivity to %d\n", rssi_dbm));
2795
2796 memset(&sens, 0, sizeof sens);
2797 sens.rssi = htole16(rssi_dbm);
2798 return iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &sens, sizeof sens);
2799 }
2800
2801 static int
iwi_auth_and_assoc(struct iwi_softc * sc,struct ieee80211vap * vap)2802 iwi_auth_and_assoc(struct iwi_softc *sc, struct ieee80211vap *vap)
2803 {
2804 struct ieee80211com *ic = vap->iv_ic;
2805 struct ifnet *ifp = vap->iv_ifp;
2806 struct ieee80211_node *ni = vap->iv_bss;
2807 struct iwi_configuration config;
2808 struct iwi_associate *assoc = &sc->assoc;
2809 struct iwi_rateset rs;
2810 uint16_t capinfo;
2811 uint32_t data;
2812 int error, mode;
2813
2814 IWI_LOCK_ASSERT(sc);
2815
2816 if (sc->flags & IWI_FLAG_ASSOCIATED) {
2817 DPRINTF(("Already associated\n"));
2818 return (-1);
2819 }
2820
2821 IWI_STATE_BEGIN(sc, IWI_FW_ASSOCIATING);
2822 error = 0;
2823 mode = 0;
2824
2825 if (IEEE80211_IS_CHAN_A(ic->ic_curchan))
2826 mode = IWI_MODE_11A;
2827 else if (IEEE80211_IS_CHAN_G(ic->ic_curchan))
2828 mode = IWI_MODE_11G;
2829 if (IEEE80211_IS_CHAN_B(ic->ic_curchan))
2830 mode = IWI_MODE_11B;
2831
2832 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) {
2833 memset(&config, 0, sizeof config);
2834 config.bluetooth_coexistence = sc->bluetooth;
2835 config.antenna = sc->antenna;
2836 config.multicast_enabled = 1;
2837 if (mode == IWI_MODE_11G)
2838 config.use_protection = 1;
2839 config.answer_pbreq =
2840 (vap->iv_opmode == IEEE80211_M_IBSS) ? 1 : 0;
2841 config.disable_unicast_decryption = 1;
2842 config.disable_multicast_decryption = 1;
2843 DPRINTF(("Configuring adapter\n"));
2844 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config);
2845 if (error != 0)
2846 goto done;
2847 }
2848
2849 #ifdef IWI_DEBUG
2850 if (iwi_debug > 0) {
2851 printf("Setting ESSID to ");
2852 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
2853 printf("\n");
2854 }
2855 #endif
2856 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen);
2857 if (error != 0)
2858 goto done;
2859
2860 error = iwi_setpowermode(sc, vap);
2861 if (error != 0)
2862 goto done;
2863
2864 data = htole32(vap->iv_rtsthreshold);
2865 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data)));
2866 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data);
2867 if (error != 0)
2868 goto done;
2869
2870 data = htole32(vap->iv_fragthreshold);
2871 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data)));
2872 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data);
2873 if (error != 0)
2874 goto done;
2875
2876 /* the rate set has already been "negotiated" */
2877 memset(&rs, 0, sizeof rs);
2878 rs.mode = mode;
2879 rs.type = IWI_RATESET_TYPE_NEGOTIATED;
2880 rs.nrates = ni->ni_rates.rs_nrates;
2881 if (rs.nrates > IWI_RATESET_SIZE) {
2882 DPRINTF(("Truncating negotiated rate set from %u\n",
2883 rs.nrates));
2884 rs.nrates = IWI_RATESET_SIZE;
2885 }
2886 memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates);
2887 DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates));
2888 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs);
2889 if (error != 0)
2890 goto done;
2891
2892 memset(assoc, 0, sizeof *assoc);
2893
2894 if ((vap->iv_flags & IEEE80211_F_WME) && ni->ni_ies.wme_ie != NULL) {
2895 /* NB: don't treat WME setup as failure */
2896 if (iwi_wme_setparams(sc, ic) == 0 && iwi_wme_setie(sc) == 0)
2897 assoc->policy |= htole16(IWI_POLICY_WME);
2898 /* XXX complain on failure? */
2899 }
2900
2901 if (vap->iv_appie_wpa != NULL) {
2902 struct ieee80211_appie *ie = vap->iv_appie_wpa;
2903
2904 DPRINTF(("Setting optional IE (len=%u)\n", ie->ie_len));
2905 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ie->ie_data, ie->ie_len);
2906 if (error != 0)
2907 goto done;
2908 }
2909
2910 error = iwi_set_sensitivity(sc, ic->ic_node_getrssi(ni));
2911 if (error != 0)
2912 goto done;
2913
2914 assoc->mode = mode;
2915 assoc->chan = ic->ic_curchan->ic_ieee;
2916 /*
2917 * NB: do not arrange for shared key auth w/o privacy
2918 * (i.e. a wep key); it causes a firmware error.
2919 */
2920 if ((vap->iv_flags & IEEE80211_F_PRIVACY) &&
2921 ni->ni_authmode == IEEE80211_AUTH_SHARED) {
2922 assoc->auth = IWI_AUTH_SHARED;
2923 /*
2924 * It's possible to have privacy marked but no default
2925 * key setup. This typically is due to a user app bug
2926 * but if we blindly grab the key the firmware will
2927 * barf so avoid it for now.
2928 */
2929 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE)
2930 assoc->auth |= vap->iv_def_txkey << 4;
2931
2932 error = iwi_setwepkeys(sc, vap);
2933 if (error != 0)
2934 goto done;
2935 }
2936 if (vap->iv_flags & IEEE80211_F_WPA)
2937 assoc->policy |= htole16(IWI_POLICY_WPA);
2938 if (vap->iv_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0)
2939 assoc->type = IWI_HC_IBSS_START;
2940 else
2941 assoc->type = IWI_HC_ASSOC;
2942 memcpy(assoc->tstamp, ni->ni_tstamp.data, 8);
2943
2944 if (vap->iv_opmode == IEEE80211_M_IBSS)
2945 capinfo = IEEE80211_CAPINFO_IBSS;
2946 else
2947 capinfo = IEEE80211_CAPINFO_ESS;
2948 if (vap->iv_flags & IEEE80211_F_PRIVACY)
2949 capinfo |= IEEE80211_CAPINFO_PRIVACY;
2950 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) &&
2951 IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan))
2952 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE;
2953 if (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME)
2954 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME;
2955 assoc->capinfo = htole16(capinfo);
2956
2957 assoc->lintval = htole16(ic->ic_lintval);
2958 assoc->intval = htole16(ni->ni_intval);
2959 IEEE80211_ADDR_COPY(assoc->bssid, ni->ni_bssid);
2960 if (vap->iv_opmode == IEEE80211_M_IBSS)
2961 IEEE80211_ADDR_COPY(assoc->dst, ifp->if_broadcastaddr);
2962 else
2963 IEEE80211_ADDR_COPY(assoc->dst, ni->ni_bssid);
2964
2965 DPRINTF(("%s bssid %6D dst %6D channel %u policy 0x%x "
2966 "auth %u capinfo 0x%x lintval %u bintval %u\n",
2967 assoc->type == IWI_HC_IBSS_START ? "Start" : "Join",
2968 assoc->bssid, ":", assoc->dst, ":",
2969 assoc->chan, le16toh(assoc->policy), assoc->auth,
2970 le16toh(assoc->capinfo), le16toh(assoc->lintval),
2971 le16toh(assoc->intval)));
2972 error = iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
2973 done:
2974 if (error)
2975 IWI_STATE_END(sc, IWI_FW_ASSOCIATING);
2976
2977 return (error);
2978 }
2979
2980 static void
iwi_disassoc(void * arg,int pending)2981 iwi_disassoc(void *arg, int pending)
2982 {
2983 struct iwi_softc *sc = arg;
2984 IWI_LOCK_DECL;
2985
2986 IWI_LOCK(sc);
2987 iwi_disassociate(sc, 0);
2988 IWI_UNLOCK(sc);
2989 }
2990
2991 static int
iwi_disassociate(struct iwi_softc * sc,int quiet)2992 iwi_disassociate(struct iwi_softc *sc, int quiet)
2993 {
2994 struct iwi_associate *assoc = &sc->assoc;
2995
2996 if ((sc->flags & IWI_FLAG_ASSOCIATED) == 0) {
2997 DPRINTF(("Not associated\n"));
2998 return (-1);
2999 }
3000
3001 IWI_STATE_BEGIN(sc, IWI_FW_DISASSOCIATING);
3002
3003 if (quiet)
3004 assoc->type = IWI_HC_DISASSOC_QUIET;
3005 else
3006 assoc->type = IWI_HC_DISASSOC;
3007
3008 DPRINTF(("Trying to disassociate from %6D channel %u\n",
3009 assoc->bssid, ":", assoc->chan));
3010 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc);
3011 }
3012
3013 /*
3014 * release dma resources for the firmware
3015 */
3016 static void
iwi_release_fw_dma(struct iwi_softc * sc)3017 iwi_release_fw_dma(struct iwi_softc *sc)
3018 {
3019 if (sc->fw_flags & IWI_FW_HAVE_PHY)
3020 bus_dmamap_unload(sc->fw_dmat, sc->fw_map);
3021 if (sc->fw_flags & IWI_FW_HAVE_MAP)
3022 bus_dmamem_free(sc->fw_dmat, sc->fw_virtaddr, sc->fw_map);
3023 if (sc->fw_flags & IWI_FW_HAVE_DMAT)
3024 bus_dma_tag_destroy(sc->fw_dmat);
3025
3026 sc->fw_flags = 0;
3027 sc->fw_dma_size = 0;
3028 sc->fw_dmat = NULL;
3029 sc->fw_map = NULL;
3030 sc->fw_physaddr = 0;
3031 sc->fw_virtaddr = NULL;
3032 }
3033
3034 /*
3035 * allocate the dma descriptor for the firmware.
3036 * Return 0 on success, 1 on error.
3037 * Must be called unlocked, protected by IWI_FLAG_FW_LOADING.
3038 */
3039 static int
iwi_init_fw_dma(struct iwi_softc * sc,int size)3040 iwi_init_fw_dma(struct iwi_softc *sc, int size)
3041 {
3042 if (sc->fw_dma_size >= size)
3043 return 0;
3044 if (bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0,
3045 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
3046 size, 1, size, 0, NULL, NULL, &sc->fw_dmat) != 0) {
3047 device_printf(sc->sc_dev,
3048 "could not create firmware DMA tag\n");
3049 goto error;
3050 }
3051 sc->fw_flags |= IWI_FW_HAVE_DMAT;
3052 if (bus_dmamem_alloc(sc->fw_dmat, &sc->fw_virtaddr, 0,
3053 &sc->fw_map) != 0) {
3054 device_printf(sc->sc_dev,
3055 "could not allocate firmware DMA memory\n");
3056 goto error;
3057 }
3058 sc->fw_flags |= IWI_FW_HAVE_MAP;
3059 if (bus_dmamap_load(sc->fw_dmat, sc->fw_map, sc->fw_virtaddr,
3060 size, iwi_dma_map_addr, &sc->fw_physaddr, 0) != 0) {
3061 device_printf(sc->sc_dev, "could not load firmware DMA map\n");
3062 goto error;
3063 }
3064 sc->fw_flags |= IWI_FW_HAVE_PHY;
3065 sc->fw_dma_size = size;
3066 return 0;
3067
3068 error:
3069 iwi_release_fw_dma(sc);
3070 return 1;
3071 }
3072
3073 static void
iwi_init_locked(struct iwi_softc * sc)3074 iwi_init_locked(struct iwi_softc *sc)
3075 {
3076 struct ifnet *ifp = sc->sc_ifp;
3077 struct iwi_rx_data *data;
3078 int i;
3079
3080 IWI_LOCK_ASSERT(sc);
3081
3082 if (sc->fw_state == IWI_FW_LOADING) {
3083 device_printf(sc->sc_dev, "%s: already loading\n", __func__);
3084 return; /* XXX: condvar? */
3085 }
3086
3087 iwi_stop_locked(sc);
3088
3089 IWI_STATE_BEGIN(sc, IWI_FW_LOADING);
3090
3091 if (iwi_reset(sc) != 0) {
3092 device_printf(sc->sc_dev, "could not reset adapter\n");
3093 goto fail;
3094 }
3095 if (iwi_load_firmware(sc, &sc->fw_boot) != 0) {
3096 device_printf(sc->sc_dev,
3097 "could not load boot firmware %s\n", sc->fw_boot.name);
3098 goto fail;
3099 }
3100 if (iwi_load_ucode(sc, &sc->fw_uc) != 0) {
3101 device_printf(sc->sc_dev,
3102 "could not load microcode %s\n", sc->fw_uc.name);
3103 goto fail;
3104 }
3105
3106 iwi_stop_master(sc);
3107
3108 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.physaddr);
3109 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count);
3110 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur);
3111
3112 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].physaddr);
3113 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count);
3114 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur);
3115
3116 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].physaddr);
3117 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count);
3118 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur);
3119
3120 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].physaddr);
3121 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count);
3122 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur);
3123
3124 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].physaddr);
3125 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count);
3126 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur);
3127
3128 for (i = 0; i < sc->rxq.count; i++) {
3129 data = &sc->rxq.data[i];
3130 CSR_WRITE_4(sc, data->reg, data->physaddr);
3131 }
3132
3133 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count - 1);
3134
3135 if (iwi_load_firmware(sc, &sc->fw_fw) != 0) {
3136 device_printf(sc->sc_dev,
3137 "could not load main firmware %s\n", sc->fw_fw.name);
3138 goto fail;
3139 }
3140 sc->flags |= IWI_FLAG_FW_INITED;
3141
3142 IWI_STATE_END(sc, IWI_FW_LOADING);
3143
3144 if (iwi_config(sc) != 0) {
3145 device_printf(sc->sc_dev, "unable to enable adapter\n");
3146 goto fail2;
3147 }
3148
3149 callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc);
3150 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
3151 ifp->if_drv_flags |= IFF_DRV_RUNNING;
3152 return;
3153 fail:
3154 IWI_STATE_END(sc, IWI_FW_LOADING);
3155 fail2:
3156 iwi_stop_locked(sc);
3157 }
3158
3159 static void
iwi_init(void * priv)3160 iwi_init(void *priv)
3161 {
3162 struct iwi_softc *sc = priv;
3163 struct ifnet *ifp = sc->sc_ifp;
3164 struct ieee80211com *ic = ifp->if_l2com;
3165 IWI_LOCK_DECL;
3166
3167 IWI_LOCK(sc);
3168 iwi_init_locked(sc);
3169 IWI_UNLOCK(sc);
3170
3171 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
3172 ieee80211_start_all(ic);
3173 }
3174
3175 static void
iwi_stop_locked(void * priv)3176 iwi_stop_locked(void *priv)
3177 {
3178 struct iwi_softc *sc = priv;
3179 struct ifnet *ifp = sc->sc_ifp;
3180
3181 IWI_LOCK_ASSERT(sc);
3182
3183 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
3184
3185 if (sc->sc_softled) {
3186 callout_stop(&sc->sc_ledtimer);
3187 sc->sc_blinking = 0;
3188 }
3189 callout_stop(&sc->sc_wdtimer);
3190 callout_stop(&sc->sc_rftimer);
3191
3192 iwi_stop_master(sc);
3193
3194 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SOFT_RESET);
3195
3196 /* reset rings */
3197 iwi_reset_cmd_ring(sc, &sc->cmdq);
3198 iwi_reset_tx_ring(sc, &sc->txq[0]);
3199 iwi_reset_tx_ring(sc, &sc->txq[1]);
3200 iwi_reset_tx_ring(sc, &sc->txq[2]);
3201 iwi_reset_tx_ring(sc, &sc->txq[3]);
3202 iwi_reset_rx_ring(sc, &sc->rxq);
3203
3204 sc->sc_tx_timer = 0;
3205 sc->sc_state_timer = 0;
3206 sc->sc_busy_timer = 0;
3207 sc->flags &= ~(IWI_FLAG_BUSY | IWI_FLAG_ASSOCIATED);
3208 sc->fw_state = IWI_FW_IDLE;
3209 wakeup(sc);
3210 }
3211
3212 static void
iwi_stop(struct iwi_softc * sc)3213 iwi_stop(struct iwi_softc *sc)
3214 {
3215 IWI_LOCK_DECL;
3216
3217 IWI_LOCK(sc);
3218 iwi_stop_locked(sc);
3219 IWI_UNLOCK(sc);
3220 }
3221
3222 static void
iwi_restart(void * arg,int npending)3223 iwi_restart(void *arg, int npending)
3224 {
3225 struct iwi_softc *sc = arg;
3226
3227 iwi_init(sc);
3228 }
3229
3230 /*
3231 * Return whether or not the radio is enabled in hardware
3232 * (i.e. the rfkill switch is "off").
3233 */
3234 static int
iwi_getrfkill(struct iwi_softc * sc)3235 iwi_getrfkill(struct iwi_softc *sc)
3236 {
3237 return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0;
3238 }
3239
3240 static void
iwi_radio_on(void * arg,int pending)3241 iwi_radio_on(void *arg, int pending)
3242 {
3243 struct iwi_softc *sc = arg;
3244 struct ieee80211com *ic = sc->sc_ifp->if_l2com;
3245
3246 device_printf(sc->sc_dev, "radio turned on\n");
3247
3248 iwi_init(sc);
3249 ieee80211_notify_radio(ic, 1);
3250 }
3251
3252 static void
iwi_rfkill_poll(void * arg)3253 iwi_rfkill_poll(void *arg)
3254 {
3255 struct iwi_softc *sc = arg;
3256
3257 IWI_LOCK_ASSERT(sc);
3258
3259 /*
3260 * Check for a change in rfkill state. We get an
3261 * interrupt when a radio is disabled but not when
3262 * it is enabled so we must poll for the latter.
3263 */
3264 if (!iwi_getrfkill(sc)) {
3265 struct ifnet *ifp = sc->sc_ifp;
3266 struct ieee80211com *ic = ifp->if_l2com;
3267
3268 ieee80211_runtask(ic, &sc->sc_radiontask);
3269 return;
3270 }
3271 callout_reset(&sc->sc_rftimer, 2*hz, iwi_rfkill_poll, sc);
3272 }
3273
3274 static void
iwi_radio_off(void * arg,int pending)3275 iwi_radio_off(void *arg, int pending)
3276 {
3277 struct iwi_softc *sc = arg;
3278 struct ieee80211com *ic = sc->sc_ifp->if_l2com;
3279 IWI_LOCK_DECL;
3280
3281 device_printf(sc->sc_dev, "radio turned off\n");
3282
3283 ieee80211_notify_radio(ic, 0);
3284
3285 IWI_LOCK(sc);
3286 iwi_stop_locked(sc);
3287 iwi_rfkill_poll(sc);
3288 IWI_UNLOCK(sc);
3289 }
3290
3291 static int
iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)3292 iwi_sysctl_stats(SYSCTL_HANDLER_ARGS)
3293 {
3294 struct iwi_softc *sc = arg1;
3295 uint32_t size, buf[128];
3296
3297 memset(buf, 0, sizeof buf);
3298
3299 if (!(sc->flags & IWI_FLAG_FW_INITED))
3300 return SYSCTL_OUT(req, buf, sizeof buf);
3301
3302 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1);
3303 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size);
3304
3305 return SYSCTL_OUT(req, buf, size);
3306 }
3307
3308 static int
iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)3309 iwi_sysctl_radio(SYSCTL_HANDLER_ARGS)
3310 {
3311 struct iwi_softc *sc = arg1;
3312 int val = !iwi_getrfkill(sc);
3313
3314 return SYSCTL_OUT(req, &val, sizeof val);
3315 }
3316
3317 /*
3318 * Add sysctl knobs.
3319 */
3320 static void
iwi_sysctlattach(struct iwi_softc * sc)3321 iwi_sysctlattach(struct iwi_softc *sc)
3322 {
3323 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3324 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3325
3326 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "radio",
3327 CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I",
3328 "radio transmitter switch state (0=off, 1=on)");
3329
3330 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "stats",
3331 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats, "S",
3332 "statistics");
3333
3334 sc->bluetooth = 0;
3335 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "bluetooth",
3336 CTLFLAG_RW, &sc->bluetooth, 0, "bluetooth coexistence");
3337
3338 sc->antenna = IWI_ANTENNA_AUTO;
3339 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "antenna",
3340 CTLFLAG_RW, &sc->antenna, 0, "antenna (0=auto)");
3341 }
3342
3343 /*
3344 * LED support.
3345 *
3346 * Different cards have different capabilities. Some have three
3347 * led's while others have only one. The linux ipw driver defines
3348 * led's for link state (associated or not), band (11a, 11g, 11b),
3349 * and for link activity. We use one led and vary the blink rate
3350 * according to the tx/rx traffic a la the ath driver.
3351 */
3352
3353 static __inline uint32_t
iwi_toggle_event(uint32_t r)3354 iwi_toggle_event(uint32_t r)
3355 {
3356 return r &~ (IWI_RST_STANDBY | IWI_RST_GATE_ODMA |
3357 IWI_RST_GATE_IDMA | IWI_RST_GATE_ADMA);
3358 }
3359
3360 static uint32_t
iwi_read_event(struct iwi_softc * sc)3361 iwi_read_event(struct iwi_softc *sc)
3362 {
3363 return MEM_READ_4(sc, IWI_MEM_EEPROM_EVENT);
3364 }
3365
3366 static void
iwi_write_event(struct iwi_softc * sc,uint32_t v)3367 iwi_write_event(struct iwi_softc *sc, uint32_t v)
3368 {
3369 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, v);
3370 }
3371
3372 static void
iwi_led_done(void * arg)3373 iwi_led_done(void *arg)
3374 {
3375 struct iwi_softc *sc = arg;
3376
3377 sc->sc_blinking = 0;
3378 }
3379
3380 /*
3381 * Turn the activity LED off: flip the pin and then set a timer so no
3382 * update will happen for the specified duration.
3383 */
3384 static void
iwi_led_off(void * arg)3385 iwi_led_off(void *arg)
3386 {
3387 struct iwi_softc *sc = arg;
3388 uint32_t v;
3389
3390 v = iwi_read_event(sc);
3391 v &= ~sc->sc_ledpin;
3392 iwi_write_event(sc, iwi_toggle_event(v));
3393 callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, iwi_led_done, sc);
3394 }
3395
3396 /*
3397 * Blink the LED according to the specified on/off times.
3398 */
3399 static void
iwi_led_blink(struct iwi_softc * sc,int on,int off)3400 iwi_led_blink(struct iwi_softc *sc, int on, int off)
3401 {
3402 uint32_t v;
3403
3404 v = iwi_read_event(sc);
3405 v |= sc->sc_ledpin;
3406 iwi_write_event(sc, iwi_toggle_event(v));
3407 sc->sc_blinking = 1;
3408 sc->sc_ledoff = off;
3409 callout_reset(&sc->sc_ledtimer, on, iwi_led_off, sc);
3410 }
3411
3412 static void
iwi_led_event(struct iwi_softc * sc,int event)3413 iwi_led_event(struct iwi_softc *sc, int event)
3414 {
3415 #define N(a) (sizeof(a)/sizeof(a[0]))
3416 /* NB: on/off times from the Atheros NDIS driver, w/ permission */
3417 static const struct {
3418 u_int rate; /* tx/rx iwi rate */
3419 u_int16_t timeOn; /* LED on time (ms) */
3420 u_int16_t timeOff; /* LED off time (ms) */
3421 } blinkrates[] = {
3422 { IWI_RATE_OFDM54, 40, 10 },
3423 { IWI_RATE_OFDM48, 44, 11 },
3424 { IWI_RATE_OFDM36, 50, 13 },
3425 { IWI_RATE_OFDM24, 57, 14 },
3426 { IWI_RATE_OFDM18, 67, 16 },
3427 { IWI_RATE_OFDM12, 80, 20 },
3428 { IWI_RATE_DS11, 100, 25 },
3429 { IWI_RATE_OFDM9, 133, 34 },
3430 { IWI_RATE_OFDM6, 160, 40 },
3431 { IWI_RATE_DS5, 200, 50 },
3432 { 6, 240, 58 }, /* XXX 3Mb/s if it existed */
3433 { IWI_RATE_DS2, 267, 66 },
3434 { IWI_RATE_DS1, 400, 100 },
3435 { 0, 500, 130 }, /* unknown rate/polling */
3436 };
3437 uint32_t txrate;
3438 int j = 0; /* XXX silence compiler */
3439
3440 sc->sc_ledevent = ticks; /* time of last event */
3441 if (sc->sc_blinking) /* don't interrupt active blink */
3442 return;
3443 switch (event) {
3444 case IWI_LED_POLL:
3445 j = N(blinkrates)-1;
3446 break;
3447 case IWI_LED_TX:
3448 /* read current transmission rate from adapter */
3449 txrate = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE);
3450 if (blinkrates[sc->sc_txrix].rate != txrate) {
3451 for (j = 0; j < N(blinkrates)-1; j++)
3452 if (blinkrates[j].rate == txrate)
3453 break;
3454 sc->sc_txrix = j;
3455 } else
3456 j = sc->sc_txrix;
3457 break;
3458 case IWI_LED_RX:
3459 if (blinkrates[sc->sc_rxrix].rate != sc->sc_rxrate) {
3460 for (j = 0; j < N(blinkrates)-1; j++)
3461 if (blinkrates[j].rate == sc->sc_rxrate)
3462 break;
3463 sc->sc_rxrix = j;
3464 } else
3465 j = sc->sc_rxrix;
3466 break;
3467 }
3468 /* XXX beware of overflow */
3469 iwi_led_blink(sc, (blinkrates[j].timeOn * hz) / 1000,
3470 (blinkrates[j].timeOff * hz) / 1000);
3471 #undef N
3472 }
3473
3474 static int
iwi_sysctl_softled(SYSCTL_HANDLER_ARGS)3475 iwi_sysctl_softled(SYSCTL_HANDLER_ARGS)
3476 {
3477 struct iwi_softc *sc = arg1;
3478 int softled = sc->sc_softled;
3479 int error;
3480
3481 error = sysctl_handle_int(oidp, &softled, 0, req);
3482 if (error || !req->newptr)
3483 return error;
3484 softled = (softled != 0);
3485 if (softled != sc->sc_softled) {
3486 if (softled) {
3487 uint32_t v = iwi_read_event(sc);
3488 v &= ~sc->sc_ledpin;
3489 iwi_write_event(sc, iwi_toggle_event(v));
3490 }
3491 sc->sc_softled = softled;
3492 }
3493 return 0;
3494 }
3495
3496 static void
iwi_ledattach(struct iwi_softc * sc)3497 iwi_ledattach(struct iwi_softc *sc)
3498 {
3499 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
3500 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
3501
3502 sc->sc_blinking = 0;
3503 sc->sc_ledstate = 1;
3504 sc->sc_ledidle = (2700*hz)/1000; /* 2.7sec */
3505 callout_init_mtx(&sc->sc_ledtimer, &sc->sc_mtx, 0);
3506
3507 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3508 "softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
3509 iwi_sysctl_softled, "I", "enable/disable software LED support");
3510 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3511 "ledpin", CTLFLAG_RW, &sc->sc_ledpin, 0,
3512 "pin setting to turn activity LED on");
3513 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3514 "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0,
3515 "idle time for inactivity LED (ticks)");
3516 /* XXX for debugging */
3517 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
3518 "nictype", CTLFLAG_RD, &sc->sc_nictype, 0,
3519 "NIC type from EEPROM");
3520
3521 sc->sc_ledpin = IWI_RST_LED_ACTIVITY;
3522 sc->sc_softled = 1;
3523
3524 sc->sc_nictype = (iwi_read_prom_word(sc, IWI_EEPROM_NIC) >> 8) & 0xff;
3525 if (sc->sc_nictype == 1) {
3526 /*
3527 * NB: led's are reversed.
3528 */
3529 sc->sc_ledpin = IWI_RST_LED_ASSOCIATED;
3530 }
3531 }
3532
3533 static void
iwi_scan_start(struct ieee80211com * ic)3534 iwi_scan_start(struct ieee80211com *ic)
3535 {
3536 /* ignore */
3537 }
3538
3539 static void
iwi_set_channel(struct ieee80211com * ic)3540 iwi_set_channel(struct ieee80211com *ic)
3541 {
3542 struct ifnet *ifp = ic->ic_ifp;
3543 struct iwi_softc *sc = ifp->if_softc;
3544 if (sc->fw_state == IWI_FW_IDLE)
3545 iwi_setcurchan(sc, ic->ic_curchan->ic_ieee);
3546 }
3547
3548 static void
iwi_scan_curchan(struct ieee80211_scan_state * ss,unsigned long maxdwell)3549 iwi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell)
3550 {
3551 struct ieee80211vap *vap = ss->ss_vap;
3552 struct ifnet *ifp = vap->iv_ic->ic_ifp;
3553 struct iwi_softc *sc = ifp->if_softc;
3554 IWI_LOCK_DECL;
3555
3556 IWI_LOCK(sc);
3557 if (iwi_scanchan(sc, maxdwell, 0))
3558 ieee80211_cancel_scan(vap);
3559 IWI_UNLOCK(sc);
3560 }
3561
3562 static void
iwi_scan_mindwell(struct ieee80211_scan_state * ss)3563 iwi_scan_mindwell(struct ieee80211_scan_state *ss)
3564 {
3565 /* NB: don't try to abort scan; wait for firmware to finish */
3566 }
3567
3568 static void
iwi_scan_end(struct ieee80211com * ic)3569 iwi_scan_end(struct ieee80211com *ic)
3570 {
3571 struct ifnet *ifp = ic->ic_ifp;
3572 struct iwi_softc *sc = ifp->if_softc;
3573 IWI_LOCK_DECL;
3574
3575 IWI_LOCK(sc);
3576 sc->flags &= ~IWI_FLAG_CHANNEL_SCAN;
3577 /* NB: make sure we're still scanning */
3578 if (sc->fw_state == IWI_FW_SCANNING)
3579 iwi_cmd(sc, IWI_CMD_ABORT_SCAN, NULL, 0);
3580 IWI_UNLOCK(sc);
3581 }
3582