xref: /freebsd/sys/dev/ath/if_ath_sysctl.c (revision 94e3ee44c3581ff37c5e01b5ffe5eb16d30079a7)
1 /*-
2  * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer,
10  *    without modification.
11  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
13  *    redistribution must be conditioned upon including a substantially
14  *    similar Disclaimer requirement for further binary redistribution.
15  *
16  * NO WARRANTY
17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
20  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
22  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27  * THE POSSIBILITY OF SUCH DAMAGES.
28  */
29 
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
32 
33 /*
34  * Driver for the Atheros Wireless LAN controller.
35  *
36  * This software is derived from work of Atsushi Onoe; his contribution
37  * is greatly appreciated.
38  */
39 
40 #include "opt_inet.h"
41 #include "opt_ath.h"
42 #include "opt_wlan.h"
43 
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/sysctl.h>
47 #include <sys/mbuf.h>
48 #include <sys/malloc.h>
49 #include <sys/lock.h>
50 #include <sys/mutex.h>
51 #include <sys/kernel.h>
52 #include <sys/socket.h>
53 #include <sys/sockio.h>
54 #include <sys/errno.h>
55 #include <sys/callout.h>
56 #include <sys/bus.h>
57 #include <sys/endian.h>
58 #include <sys/kthread.h>
59 #include <sys/taskqueue.h>
60 #include <sys/priv.h>
61 
62 #include <machine/bus.h>
63 
64 #include <net/if.h>
65 #include <net/if_dl.h>
66 #include <net/if_media.h>
67 #include <net/if_types.h>
68 #include <net/if_arp.h>
69 #include <net/ethernet.h>
70 #include <net/if_llc.h>
71 
72 #include <net80211/ieee80211_var.h>
73 #include <net80211/ieee80211_regdomain.h>
74 #ifdef IEEE80211_SUPPORT_SUPERG
75 #include <net80211/ieee80211_superg.h>
76 #endif
77 #ifdef IEEE80211_SUPPORT_TDMA
78 #include <net80211/ieee80211_tdma.h>
79 #endif
80 
81 #include <net/bpf.h>
82 
83 #ifdef INET
84 #include <netinet/in.h>
85 #include <netinet/if_ether.h>
86 #endif
87 
88 #include <dev/ath/if_athvar.h>
89 #include <dev/ath/ath_hal/ah_devid.h>		/* XXX for softled */
90 #include <dev/ath/ath_hal/ah_diagcodes.h>
91 
92 #include <dev/ath/if_ath_debug.h>
93 #include <dev/ath/if_ath_led.h>
94 #include <dev/ath/if_ath_misc.h>
95 #include <dev/ath/if_ath_tx.h>
96 #include <dev/ath/if_ath_sysctl.h>
97 
98 #ifdef ATH_TX99_DIAG
99 #include <dev/ath/ath_tx99/ath_tx99.h>
100 #endif
101 
102 static int
103 ath_sysctl_slottime(SYSCTL_HANDLER_ARGS)
104 {
105 	struct ath_softc *sc = arg1;
106 	u_int slottime = ath_hal_getslottime(sc->sc_ah);
107 	int error;
108 
109 	error = sysctl_handle_int(oidp, &slottime, 0, req);
110 	if (error || !req->newptr)
111 		return error;
112 	return !ath_hal_setslottime(sc->sc_ah, slottime) ? EINVAL : 0;
113 }
114 
115 static int
116 ath_sysctl_acktimeout(SYSCTL_HANDLER_ARGS)
117 {
118 	struct ath_softc *sc = arg1;
119 	u_int acktimeout = ath_hal_getacktimeout(sc->sc_ah);
120 	int error;
121 
122 	error = sysctl_handle_int(oidp, &acktimeout, 0, req);
123 	if (error || !req->newptr)
124 		return error;
125 	return !ath_hal_setacktimeout(sc->sc_ah, acktimeout) ? EINVAL : 0;
126 }
127 
128 static int
129 ath_sysctl_ctstimeout(SYSCTL_HANDLER_ARGS)
130 {
131 	struct ath_softc *sc = arg1;
132 	u_int ctstimeout = ath_hal_getctstimeout(sc->sc_ah);
133 	int error;
134 
135 	error = sysctl_handle_int(oidp, &ctstimeout, 0, req);
136 	if (error || !req->newptr)
137 		return error;
138 	return !ath_hal_setctstimeout(sc->sc_ah, ctstimeout) ? EINVAL : 0;
139 }
140 
141 static int
142 ath_sysctl_softled(SYSCTL_HANDLER_ARGS)
143 {
144 	struct ath_softc *sc = arg1;
145 	int softled = sc->sc_softled;
146 	int error;
147 
148 	error = sysctl_handle_int(oidp, &softled, 0, req);
149 	if (error || !req->newptr)
150 		return error;
151 	softled = (softled != 0);
152 	if (softled != sc->sc_softled) {
153 		if (softled) {
154 			/* NB: handle any sc_ledpin change */
155 			ath_led_config(sc);
156 		}
157 		sc->sc_softled = softled;
158 	}
159 	return 0;
160 }
161 
162 static int
163 ath_sysctl_ledpin(SYSCTL_HANDLER_ARGS)
164 {
165 	struct ath_softc *sc = arg1;
166 	int ledpin = sc->sc_ledpin;
167 	int error;
168 
169 	error = sysctl_handle_int(oidp, &ledpin, 0, req);
170 	if (error || !req->newptr)
171 		return error;
172 	if (ledpin != sc->sc_ledpin) {
173 		sc->sc_ledpin = ledpin;
174 		if (sc->sc_softled) {
175 			ath_led_config(sc);
176 		}
177 	}
178 	return 0;
179 }
180 
181 static int
182 ath_sysctl_hardled(SYSCTL_HANDLER_ARGS)
183 {
184 	struct ath_softc *sc = arg1;
185 	int hardled = sc->sc_hardled;
186 	int error;
187 
188 	error = sysctl_handle_int(oidp, &hardled, 0, req);
189 	if (error || !req->newptr)
190 		return error;
191 	hardled = (hardled != 0);
192 	if (hardled != sc->sc_hardled) {
193 		if (hardled) {
194 			/* NB: handle any sc_ledpin change */
195 			ath_led_config(sc);
196 		}
197 		sc->sc_hardled = hardled;
198 	}
199 	return 0;
200 }
201 
202 static int
203 ath_sysctl_txantenna(SYSCTL_HANDLER_ARGS)
204 {
205 	struct ath_softc *sc = arg1;
206 	u_int txantenna = ath_hal_getantennaswitch(sc->sc_ah);
207 	int error;
208 
209 	error = sysctl_handle_int(oidp, &txantenna, 0, req);
210 	if (!error && req->newptr) {
211 		/* XXX assumes 2 antenna ports */
212 		if (txantenna < HAL_ANT_VARIABLE || txantenna > HAL_ANT_FIXED_B)
213 			return EINVAL;
214 		ath_hal_setantennaswitch(sc->sc_ah, txantenna);
215 		/*
216 		 * NB: with the switch locked this isn't meaningful,
217 		 *     but set it anyway so things like radiotap get
218 		 *     consistent info in their data.
219 		 */
220 		sc->sc_txantenna = txantenna;
221 	}
222 	return error;
223 }
224 
225 static int
226 ath_sysctl_rxantenna(SYSCTL_HANDLER_ARGS)
227 {
228 	struct ath_softc *sc = arg1;
229 	u_int defantenna = ath_hal_getdefantenna(sc->sc_ah);
230 	int error;
231 
232 	error = sysctl_handle_int(oidp, &defantenna, 0, req);
233 	if (!error && req->newptr)
234 		ath_hal_setdefantenna(sc->sc_ah, defantenna);
235 	return error;
236 }
237 
238 static int
239 ath_sysctl_diversity(SYSCTL_HANDLER_ARGS)
240 {
241 	struct ath_softc *sc = arg1;
242 	u_int diversity = ath_hal_getdiversity(sc->sc_ah);
243 	int error;
244 
245 	error = sysctl_handle_int(oidp, &diversity, 0, req);
246 	if (error || !req->newptr)
247 		return error;
248 	if (!ath_hal_setdiversity(sc->sc_ah, diversity))
249 		return EINVAL;
250 	sc->sc_diversity = diversity;
251 	return 0;
252 }
253 
254 static int
255 ath_sysctl_diag(SYSCTL_HANDLER_ARGS)
256 {
257 	struct ath_softc *sc = arg1;
258 	u_int32_t diag;
259 	int error;
260 
261 	if (!ath_hal_getdiag(sc->sc_ah, &diag))
262 		return EINVAL;
263 	error = sysctl_handle_int(oidp, &diag, 0, req);
264 	if (error || !req->newptr)
265 		return error;
266 	return !ath_hal_setdiag(sc->sc_ah, diag) ? EINVAL : 0;
267 }
268 
269 static int
270 ath_sysctl_tpscale(SYSCTL_HANDLER_ARGS)
271 {
272 	struct ath_softc *sc = arg1;
273 	struct ifnet *ifp = sc->sc_ifp;
274 	u_int32_t scale;
275 	int error;
276 
277 	(void) ath_hal_gettpscale(sc->sc_ah, &scale);
278 	error = sysctl_handle_int(oidp, &scale, 0, req);
279 	if (error || !req->newptr)
280 		return error;
281 	return !ath_hal_settpscale(sc->sc_ah, scale) ? EINVAL :
282 	    (ifp->if_drv_flags & IFF_DRV_RUNNING) ?
283 	      ath_reset(ifp, ATH_RESET_NOLOSS) : 0;
284 }
285 
286 static int
287 ath_sysctl_tpc(SYSCTL_HANDLER_ARGS)
288 {
289 	struct ath_softc *sc = arg1;
290 	u_int tpc = ath_hal_gettpc(sc->sc_ah);
291 	int error;
292 
293 	error = sysctl_handle_int(oidp, &tpc, 0, req);
294 	if (error || !req->newptr)
295 		return error;
296 	return !ath_hal_settpc(sc->sc_ah, tpc) ? EINVAL : 0;
297 }
298 
299 static int
300 ath_sysctl_rfkill(SYSCTL_HANDLER_ARGS)
301 {
302 	struct ath_softc *sc = arg1;
303 	struct ifnet *ifp = sc->sc_ifp;
304 	struct ath_hal *ah = sc->sc_ah;
305 	u_int rfkill = ath_hal_getrfkill(ah);
306 	int error;
307 
308 	error = sysctl_handle_int(oidp, &rfkill, 0, req);
309 	if (error || !req->newptr)
310 		return error;
311 	if (rfkill == ath_hal_getrfkill(ah))	/* unchanged */
312 		return 0;
313 	if (!ath_hal_setrfkill(ah, rfkill))
314 		return EINVAL;
315 	return (ifp->if_drv_flags & IFF_DRV_RUNNING) ?
316 	    ath_reset(ifp, ATH_RESET_FULL) : 0;
317 }
318 
319 static int
320 ath_sysctl_txagg(SYSCTL_HANDLER_ARGS)
321 {
322 	struct ath_softc *sc = arg1;
323 	int i, t, param = 0;
324 	int error;
325 	struct ath_buf *bf;
326 
327 	error = sysctl_handle_int(oidp, &param, 0, req);
328 	if (error || !req->newptr)
329 		return error;
330 
331 	if (param != 1)
332 		return 0;
333 
334 	printf("no tx bufs (empty list): %d\n", sc->sc_stats.ast_tx_getnobuf);
335 	printf("no tx bufs (was busy): %d\n", sc->sc_stats.ast_tx_getbusybuf);
336 
337 	printf("aggr single packet: %d\n",
338 	    sc->sc_aggr_stats.aggr_single_pkt);
339 	printf("aggr single packet w/ BAW closed: %d\n",
340 	    sc->sc_aggr_stats.aggr_baw_closed_single_pkt);
341 	printf("aggr non-baw packet: %d\n",
342 	    sc->sc_aggr_stats.aggr_nonbaw_pkt);
343 	printf("aggr aggregate packet: %d\n",
344 	    sc->sc_aggr_stats.aggr_aggr_pkt);
345 	printf("aggr single packet low hwq: %d\n",
346 	    sc->sc_aggr_stats.aggr_low_hwq_single_pkt);
347 	printf("aggr sched, no work: %d\n",
348 	    sc->sc_aggr_stats.aggr_sched_nopkt);
349 	for (i = 0; i < 64; i++) {
350 		printf("%2d: %10d ", i, sc->sc_aggr_stats.aggr_pkts[i]);
351 		if (i % 4 == 3)
352 			printf("\n");
353 	}
354 	printf("\n");
355 
356 	for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
357 		if (ATH_TXQ_SETUP(sc, i)) {
358 			printf("HW TXQ %d: axq_depth=%d, axq_aggr_depth=%d\n",
359 			    i,
360 			    sc->sc_txq[i].axq_depth,
361 			    sc->sc_txq[i].axq_aggr_depth);
362 		}
363 	}
364 
365 	i = t = 0;
366 	ATH_TXBUF_LOCK(sc);
367 	TAILQ_FOREACH(bf, &sc->sc_txbuf, bf_list) {
368 		if (bf->bf_flags & ATH_BUF_BUSY) {
369 			printf("Busy: %d\n", t);
370 			i++;
371 		}
372 		t++;
373 	}
374 	ATH_TXBUF_UNLOCK(sc);
375 	printf("Total TX buffers: %d; Total TX buffers busy: %d\n",
376 	    t, i);
377 
378 	return 0;
379 }
380 
381 static int
382 ath_sysctl_rfsilent(SYSCTL_HANDLER_ARGS)
383 {
384 	struct ath_softc *sc = arg1;
385 	u_int rfsilent;
386 	int error;
387 
388 	(void) ath_hal_getrfsilent(sc->sc_ah, &rfsilent);
389 	error = sysctl_handle_int(oidp, &rfsilent, 0, req);
390 	if (error || !req->newptr)
391 		return error;
392 	if (!ath_hal_setrfsilent(sc->sc_ah, rfsilent))
393 		return EINVAL;
394 	sc->sc_rfsilentpin = rfsilent & 0x1c;
395 	sc->sc_rfsilentpol = (rfsilent & 0x2) != 0;
396 	return 0;
397 }
398 
399 static int
400 ath_sysctl_tpack(SYSCTL_HANDLER_ARGS)
401 {
402 	struct ath_softc *sc = arg1;
403 	u_int32_t tpack;
404 	int error;
405 
406 	(void) ath_hal_gettpack(sc->sc_ah, &tpack);
407 	error = sysctl_handle_int(oidp, &tpack, 0, req);
408 	if (error || !req->newptr)
409 		return error;
410 	return !ath_hal_settpack(sc->sc_ah, tpack) ? EINVAL : 0;
411 }
412 
413 static int
414 ath_sysctl_tpcts(SYSCTL_HANDLER_ARGS)
415 {
416 	struct ath_softc *sc = arg1;
417 	u_int32_t tpcts;
418 	int error;
419 
420 	(void) ath_hal_gettpcts(sc->sc_ah, &tpcts);
421 	error = sysctl_handle_int(oidp, &tpcts, 0, req);
422 	if (error || !req->newptr)
423 		return error;
424 	return !ath_hal_settpcts(sc->sc_ah, tpcts) ? EINVAL : 0;
425 }
426 
427 static int
428 ath_sysctl_intmit(SYSCTL_HANDLER_ARGS)
429 {
430 	struct ath_softc *sc = arg1;
431 	int intmit, error;
432 
433 	intmit = ath_hal_getintmit(sc->sc_ah);
434 	error = sysctl_handle_int(oidp, &intmit, 0, req);
435 	if (error || !req->newptr)
436 		return error;
437 
438 	/* reusing error; 1 here means "good"; 0 means "fail" */
439 	error = ath_hal_setintmit(sc->sc_ah, intmit);
440 	if (! error)
441 		return EINVAL;
442 
443 	/*
444 	 * Reset the hardware here - disabling ANI in the HAL
445 	 * doesn't reset ANI related registers, so it'll leave
446 	 * things in an inconsistent state.
447 	 */
448 	if (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING)
449 		ath_reset(sc->sc_ifp, ATH_RESET_NOLOSS);
450 
451 	return 0;
452 }
453 
454 #ifdef IEEE80211_SUPPORT_TDMA
455 static int
456 ath_sysctl_setcca(SYSCTL_HANDLER_ARGS)
457 {
458 	struct ath_softc *sc = arg1;
459 	int setcca, error;
460 
461 	setcca = sc->sc_setcca;
462 	error = sysctl_handle_int(oidp, &setcca, 0, req);
463 	if (error || !req->newptr)
464 		return error;
465 	sc->sc_setcca = (setcca != 0);
466 	return 0;
467 }
468 #endif /* IEEE80211_SUPPORT_TDMA */
469 
470 static int
471 ath_sysctl_forcebstuck(SYSCTL_HANDLER_ARGS)
472 {
473 	struct ath_softc *sc = arg1;
474 	int val = 0;
475 	int error;
476 
477 	error = sysctl_handle_int(oidp, &val, 0, req);
478 	if (error || !req->newptr)
479 		return error;
480 	if (val == 0)
481 		return 0;
482 
483 	taskqueue_enqueue_fast(sc->sc_tq, &sc->sc_bstucktask);
484 	val = 0;
485 	return 0;
486 }
487 
488 void
489 ath_sysctlattach(struct ath_softc *sc)
490 {
491 	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
492 	struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
493 	struct ath_hal *ah = sc->sc_ah;
494 
495 	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
496 		"countrycode", CTLFLAG_RD, &sc->sc_eecc, 0,
497 		"EEPROM country code");
498 	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
499 		"regdomain", CTLFLAG_RD, &sc->sc_eerd, 0,
500 		"EEPROM regdomain code");
501 #ifdef	ATH_DEBUG
502 	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
503 		"debug", CTLFLAG_RW, &sc->sc_debug, 0,
504 		"control debugging printfs");
505 #endif
506 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
507 		"slottime", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
508 		ath_sysctl_slottime, "I", "802.11 slot time (us)");
509 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
510 		"acktimeout", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
511 		ath_sysctl_acktimeout, "I", "802.11 ACK timeout (us)");
512 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
513 		"ctstimeout", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
514 		ath_sysctl_ctstimeout, "I", "802.11 CTS timeout (us)");
515 
516 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
517 		"softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
518 		ath_sysctl_softled, "I", "enable/disable software LED support");
519 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
520 		"ledpin", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
521 		ath_sysctl_ledpin, "I", "GPIO pin connected to LED");
522 	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
523 		"ledon", CTLFLAG_RW, &sc->sc_ledon, 0,
524 		"setting to turn LED on");
525 	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
526 		"ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0,
527 		"idle time for inactivity LED (ticks)");
528 
529 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
530 		"hardled", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
531 		ath_sysctl_hardled, "I", "enable/disable hardware LED support");
532 	/* XXX Laziness - configure pins, then flip hardled off/on */
533 	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
534 		"led_net_pin", CTLFLAG_RW, &sc->sc_led_net_pin, 0,
535 		"MAC Network LED pin, or -1 to disable");
536 	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
537 		"led_pwr_pin", CTLFLAG_RW, &sc->sc_led_pwr_pin, 0,
538 		"MAC Power LED pin, or -1 to disable");
539 
540 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
541 		"txantenna", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
542 		ath_sysctl_txantenna, "I", "antenna switch");
543 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
544 		"rxantenna", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
545 		ath_sysctl_rxantenna, "I", "default/rx antenna");
546 	if (ath_hal_hasdiversity(ah))
547 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
548 			"diversity", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
549 			ath_sysctl_diversity, "I", "antenna diversity");
550 	sc->sc_txintrperiod = ATH_TXINTR_PERIOD;
551 	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
552 		"txintrperiod", CTLFLAG_RW, &sc->sc_txintrperiod, 0,
553 		"tx descriptor batching");
554 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
555 		"diag", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
556 		ath_sysctl_diag, "I", "h/w diagnostic control");
557 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
558 		"tpscale", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
559 		ath_sysctl_tpscale, "I", "tx power scaling");
560 	if (ath_hal_hastpc(ah)) {
561 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
562 			"tpc", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
563 			ath_sysctl_tpc, "I", "enable/disable per-packet TPC");
564 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
565 			"tpack", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
566 			ath_sysctl_tpack, "I", "tx power for ack frames");
567 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
568 			"tpcts", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
569 			ath_sysctl_tpcts, "I", "tx power for cts frames");
570 	}
571 	if (ath_hal_hasrfsilent(ah)) {
572 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
573 			"rfsilent", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
574 			ath_sysctl_rfsilent, "I", "h/w RF silent config");
575 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
576 			"rfkill", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
577 			ath_sysctl_rfkill, "I", "enable/disable RF kill switch");
578 	}
579 
580 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
581 		"txagg", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
582 		ath_sysctl_txagg, "I", "");
583 
584 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
585 		"forcebstuck", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
586 		ath_sysctl_forcebstuck, "I", "");
587 
588 	if (ath_hal_hasintmit(ah)) {
589 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
590 			"intmit", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
591 			ath_sysctl_intmit, "I", "interference mitigation");
592 	}
593 	sc->sc_monpass = HAL_RXERR_DECRYPT | HAL_RXERR_MIC;
594 	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
595 		"monpass", CTLFLAG_RW, &sc->sc_monpass, 0,
596 		"mask of error frames to pass when monitoring");
597 
598 	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
599 		"hwq_limit", CTLFLAG_RW, &sc->sc_hwq_limit, 0,
600 		"");
601 	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
602 		"tid_hwq_lo", CTLFLAG_RW, &sc->sc_tid_hwq_lo, 0,
603 		"");
604 	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
605 		"tid_hwq_hi", CTLFLAG_RW, &sc->sc_tid_hwq_hi, 0,
606 		"");
607 
608 #if 0
609 	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
610 		"txq_data_minfree", CTLFLAG_RW, &sc->sc_txq_data_minfree,
611 		0, "Minimum free buffers before adding a data frame"
612 		" to the TX queue");
613 #endif
614 	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
615 		"txq_mcastq_maxdepth", CTLFLAG_RW,
616 		&sc->sc_txq_mcastq_maxdepth, 0,
617 		"Maximum buffer depth for multicast/broadcast frames");
618 
619 #ifdef IEEE80211_SUPPORT_TDMA
620 	if (ath_hal_macversion(ah) > 0x78) {
621 		sc->sc_tdmadbaprep = 2;
622 		SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
623 			"dbaprep", CTLFLAG_RW, &sc->sc_tdmadbaprep, 0,
624 			"TDMA DBA preparation time");
625 		sc->sc_tdmaswbaprep = 10;
626 		SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
627 			"swbaprep", CTLFLAG_RW, &sc->sc_tdmaswbaprep, 0,
628 			"TDMA SWBA preparation time");
629 		SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
630 			"guardtime", CTLFLAG_RW, &sc->sc_tdmaguard, 0,
631 			"TDMA slot guard time");
632 		SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
633 			"superframe", CTLFLAG_RD, &sc->sc_tdmabintval, 0,
634 			"TDMA calculated super frame");
635 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
636 			"setcca", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
637 			ath_sysctl_setcca, "I", "enable CCA control");
638 	}
639 #endif
640 }
641 
642 static int
643 ath_sysctl_clearstats(SYSCTL_HANDLER_ARGS)
644 {
645 	struct ath_softc *sc = arg1;
646 	int val = 0;
647 	int error;
648 
649 	error = sysctl_handle_int(oidp, &val, 0, req);
650 	if (error || !req->newptr)
651 		return error;
652 	if (val == 0)
653 		return 0;       /* Not clearing the stats is still valid */
654 	memset(&sc->sc_stats, 0, sizeof(sc->sc_stats));
655 	memset(&sc->sc_aggr_stats, 0, sizeof(sc->sc_aggr_stats));
656 
657 	val = 0;
658 	return 0;
659 }
660 
661 static void
662 ath_sysctl_stats_attach_rxphyerr(struct ath_softc *sc, struct sysctl_oid_list *parent)
663 {
664 	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
665 	struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
666 	struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);
667 	int i;
668 	char sn[8];
669 
670 	tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx_phy_err", CTLFLAG_RD, NULL, "Per-code RX PHY Errors");
671 	child = SYSCTL_CHILDREN(tree);
672 	for (i = 0; i < 64; i++) {
673 		snprintf(sn, sizeof(sn), "%d", i);
674 		SYSCTL_ADD_UINT(ctx, child, OID_AUTO, sn, CTLFLAG_RD, &sc->sc_stats.ast_rx_phy[i], 0, "");
675 	}
676 }
677 
678 void
679 ath_sysctl_stats_attach(struct ath_softc *sc)
680 {
681 	struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
682 	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
683 	struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);
684 
685 	/* Create "clear" node */
686 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
687 	    "clear_stats", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
688 	    ath_sysctl_clearstats, "I", "clear stats");
689 
690 	/* Create stats node */
691 	tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
692 	    NULL, "Statistics");
693 	child = SYSCTL_CHILDREN(tree);
694 
695 	/* This was generated from if_athioctl.h */
696 
697 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_watchdog", CTLFLAG_RD,
698 	    &sc->sc_stats.ast_watchdog, 0, "device reset by watchdog");
699 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_hardware", CTLFLAG_RD,
700 	    &sc->sc_stats.ast_hardware, 0, "fatal hardware error interrupts");
701 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_bmiss", CTLFLAG_RD,
702 	    &sc->sc_stats.ast_bmiss, 0, "beacon miss interrupts");
703 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_bmiss_phantom", CTLFLAG_RD,
704 	    &sc->sc_stats.ast_bmiss_phantom, 0, "beacon miss interrupts");
705 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_bstuck", CTLFLAG_RD,
706 	    &sc->sc_stats.ast_bstuck, 0, "beacon stuck interrupts");
707 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rxorn", CTLFLAG_RD,
708 	    &sc->sc_stats.ast_rxorn, 0, "rx overrun interrupts");
709 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rxeol", CTLFLAG_RD,
710 	    &sc->sc_stats.ast_rxeol, 0, "rx eol interrupts");
711 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_txurn", CTLFLAG_RD,
712 	    &sc->sc_stats.ast_txurn, 0, "tx underrun interrupts");
713 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_mib", CTLFLAG_RD,
714 	    &sc->sc_stats.ast_mib, 0, "mib interrupts");
715 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_intrcoal", CTLFLAG_RD,
716 	    &sc->sc_stats.ast_intrcoal, 0, "interrupts coalesced");
717 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_packets", CTLFLAG_RD,
718 	    &sc->sc_stats.ast_tx_packets, 0, "packet sent on the interface");
719 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_mgmt", CTLFLAG_RD,
720 	    &sc->sc_stats.ast_tx_mgmt, 0, "management frames transmitted");
721 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_discard", CTLFLAG_RD,
722 	    &sc->sc_stats.ast_tx_discard, 0, "frames discarded prior to assoc");
723 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_qstop", CTLFLAG_RD,
724 	    &sc->sc_stats.ast_tx_qstop, 0, "output stopped 'cuz no buffer");
725 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_encap", CTLFLAG_RD,
726 	    &sc->sc_stats.ast_tx_encap, 0, "tx encapsulation failed");
727 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nonode", CTLFLAG_RD,
728 	    &sc->sc_stats.ast_tx_nonode, 0, "tx failed 'cuz no node");
729 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nombuf", CTLFLAG_RD,
730 	    &sc->sc_stats.ast_tx_nombuf, 0, "tx failed 'cuz no mbuf");
731 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nomcl", CTLFLAG_RD,
732 	    &sc->sc_stats.ast_tx_nomcl, 0, "tx failed 'cuz no cluster");
733 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_linear", CTLFLAG_RD,
734 	    &sc->sc_stats.ast_tx_linear, 0, "tx linearized to cluster");
735 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nodata", CTLFLAG_RD,
736 	    &sc->sc_stats.ast_tx_nodata, 0, "tx discarded empty frame");
737 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_busdma", CTLFLAG_RD,
738 	    &sc->sc_stats.ast_tx_busdma, 0, "tx failed for dma resrcs");
739 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_xretries", CTLFLAG_RD,
740 	    &sc->sc_stats.ast_tx_xretries, 0, "tx failed 'cuz too many retries");
741 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_fifoerr", CTLFLAG_RD,
742 	    &sc->sc_stats.ast_tx_fifoerr, 0, "tx failed 'cuz FIFO underrun");
743 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_filtered", CTLFLAG_RD,
744 	    &sc->sc_stats.ast_tx_filtered, 0, "tx failed 'cuz xmit filtered");
745 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_shortretry", CTLFLAG_RD,
746 	    &sc->sc_stats.ast_tx_shortretry, 0, "tx on-chip retries (short)");
747 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_longretry", CTLFLAG_RD,
748 	    &sc->sc_stats.ast_tx_longretry, 0, "tx on-chip retries (long)");
749 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_badrate", CTLFLAG_RD,
750 	    &sc->sc_stats.ast_tx_badrate, 0, "tx failed 'cuz bogus xmit rate");
751 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_noack", CTLFLAG_RD,
752 	    &sc->sc_stats.ast_tx_noack, 0, "tx frames with no ack marked");
753 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_rts", CTLFLAG_RD,
754 	    &sc->sc_stats.ast_tx_rts, 0, "tx frames with rts enabled");
755 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_cts", CTLFLAG_RD,
756 	    &sc->sc_stats.ast_tx_cts, 0, "tx frames with cts enabled");
757 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_shortpre", CTLFLAG_RD,
758 	    &sc->sc_stats.ast_tx_shortpre, 0, "tx frames with short preamble");
759 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_altrate", CTLFLAG_RD,
760 	    &sc->sc_stats.ast_tx_altrate, 0, "tx frames with alternate rate");
761 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_protect", CTLFLAG_RD,
762 	    &sc->sc_stats.ast_tx_protect, 0, "tx frames with protection");
763 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_ctsburst", CTLFLAG_RD,
764 	    &sc->sc_stats.ast_tx_ctsburst, 0, "tx frames with cts and bursting");
765 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_ctsext", CTLFLAG_RD,
766 	    &sc->sc_stats.ast_tx_ctsext, 0, "tx frames with cts extension");
767 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_nombuf", CTLFLAG_RD,
768 	    &sc->sc_stats.ast_rx_nombuf, 0, "rx setup failed 'cuz no mbuf");
769 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_busdma", CTLFLAG_RD,
770 	    &sc->sc_stats.ast_rx_busdma, 0, "rx setup failed for dma resrcs");
771 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_orn", CTLFLAG_RD,
772 	    &sc->sc_stats.ast_rx_orn, 0, "rx failed 'cuz of desc overrun");
773 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_crcerr", CTLFLAG_RD,
774 	    &sc->sc_stats.ast_rx_crcerr, 0, "rx failed 'cuz of bad CRC");
775 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_fifoerr", CTLFLAG_RD,
776 	    &sc->sc_stats.ast_rx_fifoerr, 0, "rx failed 'cuz of FIFO overrun");
777 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_badcrypt", CTLFLAG_RD,
778 	    &sc->sc_stats.ast_rx_badcrypt, 0, "rx failed 'cuz decryption");
779 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_badmic", CTLFLAG_RD,
780 	    &sc->sc_stats.ast_rx_badmic, 0, "rx failed 'cuz MIC failure");
781 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_phyerr", CTLFLAG_RD,
782 	    &sc->sc_stats.ast_rx_phyerr, 0, "rx failed 'cuz of PHY err");
783 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_tooshort", CTLFLAG_RD,
784 	    &sc->sc_stats.ast_rx_tooshort, 0, "rx discarded 'cuz frame too short");
785 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_toobig", CTLFLAG_RD,
786 	    &sc->sc_stats.ast_rx_toobig, 0, "rx discarded 'cuz frame too large");
787 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_packets", CTLFLAG_RD,
788 	    &sc->sc_stats.ast_rx_packets, 0, "packet recv on the interface");
789 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_mgt", CTLFLAG_RD,
790 	    &sc->sc_stats.ast_rx_mgt, 0, "management frames received");
791 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_ctl", CTLFLAG_RD,
792 	    &sc->sc_stats.ast_rx_ctl, 0, "rx discarded 'cuz ctl frame");
793 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_be_xmit", CTLFLAG_RD,
794 	    &sc->sc_stats.ast_be_xmit, 0, "beacons transmitted");
795 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_be_nombuf", CTLFLAG_RD,
796 	    &sc->sc_stats.ast_be_nombuf, 0, "beacon setup failed 'cuz no mbuf");
797 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_per_cal", CTLFLAG_RD,
798 	    &sc->sc_stats.ast_per_cal, 0, "periodic calibration calls");
799 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_per_calfail", CTLFLAG_RD,
800 	    &sc->sc_stats.ast_per_calfail, 0, "periodic calibration failed");
801 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_per_rfgain", CTLFLAG_RD,
802 	    &sc->sc_stats.ast_per_rfgain, 0, "periodic calibration rfgain reset");
803 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rate_calls", CTLFLAG_RD,
804 	    &sc->sc_stats.ast_rate_calls, 0, "rate control checks");
805 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rate_raise", CTLFLAG_RD,
806 	    &sc->sc_stats.ast_rate_raise, 0, "rate control raised xmit rate");
807 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rate_drop", CTLFLAG_RD,
808 	    &sc->sc_stats.ast_rate_drop, 0, "rate control dropped xmit rate");
809 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ant_defswitch", CTLFLAG_RD,
810 	    &sc->sc_stats.ast_ant_defswitch, 0, "rx/default antenna switches");
811 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ant_txswitch", CTLFLAG_RD,
812 	    &sc->sc_stats.ast_ant_txswitch, 0, "tx antenna switches");
813 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_cabq_xmit", CTLFLAG_RD,
814 	    &sc->sc_stats.ast_cabq_xmit, 0, "cabq frames transmitted");
815 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_cabq_busy", CTLFLAG_RD,
816 	    &sc->sc_stats.ast_cabq_busy, 0, "cabq found busy");
817 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_raw", CTLFLAG_RD,
818 	    &sc->sc_stats.ast_tx_raw, 0, "tx frames through raw api");
819 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ff_txok", CTLFLAG_RD,
820 	    &sc->sc_stats.ast_ff_txok, 0, "fast frames tx'd successfully");
821 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ff_txerr", CTLFLAG_RD,
822 	    &sc->sc_stats.ast_ff_txerr, 0, "fast frames tx'd w/ error");
823 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ff_rx", CTLFLAG_RD,
824 	    &sc->sc_stats.ast_ff_rx, 0, "fast frames rx'd");
825 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ff_flush", CTLFLAG_RD,
826 	    &sc->sc_stats.ast_ff_flush, 0, "fast frames flushed from staging q");
827 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_qfull", CTLFLAG_RD,
828 	    &sc->sc_stats.ast_tx_qfull, 0, "tx dropped 'cuz of queue limit");
829 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nobuf", CTLFLAG_RD,
830 	    &sc->sc_stats.ast_tx_nobuf, 0, "tx dropped 'cuz no ath buffer");
831 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tdma_update", CTLFLAG_RD,
832 	    &sc->sc_stats.ast_tdma_update, 0, "TDMA slot timing updates");
833 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tdma_timers", CTLFLAG_RD,
834 	    &sc->sc_stats.ast_tdma_timers, 0, "TDMA slot update set beacon timers");
835 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tdma_tsf", CTLFLAG_RD,
836 	    &sc->sc_stats.ast_tdma_tsf, 0, "TDMA slot update set TSF");
837 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tdma_ack", CTLFLAG_RD,
838 	    &sc->sc_stats.ast_tdma_ack, 0, "TDMA tx failed 'cuz ACK required");
839 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_raw_fail", CTLFLAG_RD,
840 	    &sc->sc_stats.ast_tx_raw_fail, 0, "raw tx failed 'cuz h/w down");
841 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nofrag", CTLFLAG_RD,
842 	    &sc->sc_stats.ast_tx_nofrag, 0, "tx dropped 'cuz no ath frag buffer");
843 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_be_missed", CTLFLAG_RD,
844 	    &sc->sc_stats.ast_be_missed, 0, "number of -missed- beacons");
845 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ani_cal", CTLFLAG_RD,
846 	    &sc->sc_stats.ast_ani_cal, 0, "number of ANI polls");
847 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_agg", CTLFLAG_RD,
848 	    &sc->sc_stats.ast_rx_agg, 0, "number of aggregate frames received");
849 
850 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_halfgi", CTLFLAG_RD,
851 	    &sc->sc_stats.ast_rx_halfgi, 0, "number of frames received with half-GI");
852 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_2040", CTLFLAG_RD,
853 	    &sc->sc_stats.ast_rx_2040, 0, "number of HT/40 frames received");
854 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_pre_crc_err", CTLFLAG_RD,
855 	    &sc->sc_stats.ast_rx_pre_crc_err, 0, "number of delimeter-CRC errors detected");
856 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_post_crc_err", CTLFLAG_RD,
857 	    &sc->sc_stats.ast_rx_post_crc_err, 0, "number of post-delimiter CRC errors detected");
858 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_decrypt_busy_err", CTLFLAG_RD,
859 	    &sc->sc_stats.ast_rx_decrypt_busy_err, 0, "number of frames received w/ busy decrypt engine");
860 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_hi_rx_chain", CTLFLAG_RD,
861 	    &sc->sc_stats.ast_rx_hi_rx_chain, 0, "");
862 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_htprotect", CTLFLAG_RD,
863 	    &sc->sc_stats.ast_tx_htprotect, 0, "HT tx frames with protection");
864 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_hitqueueend", CTLFLAG_RD,
865 	    &sc->sc_stats.ast_rx_hitqueueend, 0, "RX hit queue end");
866 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_timeout", CTLFLAG_RD,
867 	    &sc->sc_stats.ast_tx_timeout, 0, "TX Global Timeout");
868 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_cst", CTLFLAG_RD,
869 	    &sc->sc_stats.ast_tx_cst, 0, "TX Carrier Sense Timeout");
870 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_xtxop", CTLFLAG_RD,
871 	    &sc->sc_stats.ast_tx_xtxop, 0, "TX exceeded TXOP");
872 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_timerexpired", CTLFLAG_RD,
873 	    &sc->sc_stats.ast_tx_timerexpired, 0, "TX exceeded TX_TIMER register");
874 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_desccfgerr", CTLFLAG_RD,
875 	    &sc->sc_stats.ast_tx_desccfgerr, 0, "TX Descriptor Cfg Error");
876 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_swretries", CTLFLAG_RD,
877 	    &sc->sc_stats.ast_tx_swretries, 0, "TX software retry count");
878 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_swretrymax", CTLFLAG_RD,
879 	    &sc->sc_stats.ast_tx_swretrymax, 0, "TX software retry max reached");
880 
881 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_data_underrun", CTLFLAG_RD,
882 	    &sc->sc_stats.ast_tx_data_underrun, 0, "");
883 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_delim_underrun", CTLFLAG_RD,
884 	    &sc->sc_stats.ast_tx_delim_underrun, 0, "");
885 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_aggr_failall", CTLFLAG_RD,
886 	    &sc->sc_stats.ast_tx_aggr_failall, 0,
887 	    "Number of aggregate TX failures (whole frame)");
888 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_aggr_ok", CTLFLAG_RD,
889 	    &sc->sc_stats.ast_tx_aggr_ok, 0,
890 	    "Number of aggregate TX OK completions (subframe)");
891 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_aggr_fail", CTLFLAG_RD,
892 	    &sc->sc_stats.ast_tx_aggr_fail, 0,
893 	    "Number of aggregate TX failures (subframe)");
894 
895 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_intr", CTLFLAG_RD,
896 	    &sc->sc_stats.ast_rx_intr, 0, "RX interrupts");
897 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_intr", CTLFLAG_RD,
898 	    &sc->sc_stats.ast_tx_intr, 0, "TX interrupts");
899 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_mcastq_overflow",
900 	    CTLFLAG_RD, &sc->sc_stats.ast_tx_mcastq_overflow, 0,
901 	    "Number of multicast frames exceeding maximum mcast queue depth");
902 
903 	/* Attach the RX phy error array */
904 	ath_sysctl_stats_attach_rxphyerr(sc, child);
905 }
906 
907 /*
908  * This doesn't necessarily belong here (because it's HAL related, not
909  * driver related).
910  */
911 void
912 ath_sysctl_hal_attach(struct ath_softc *sc)
913 {
914 	struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
915 	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
916 	struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);
917 
918 	tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "hal", CTLFLAG_RD,
919 	    NULL, "Atheros HAL parameters");
920 	child = SYSCTL_CHILDREN(tree);
921 
922 	sc->sc_ah->ah_config.ah_debug = 0;
923 	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "debug", CTLFLAG_RW,
924 	    &sc->sc_ah->ah_config.ah_debug, 0, "Atheros HAL debugging printfs");
925 
926 	sc->sc_ah->ah_config.ah_ar5416_biasadj = 0;
927 	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "ar5416_biasadj", CTLFLAG_RW,
928 	    &sc->sc_ah->ah_config.ah_ar5416_biasadj, 0,
929 	    "Enable 2GHz AR5416 direction sensitivity bias adjust");
930 
931 	sc->sc_ah->ah_config.ah_dma_beacon_response_time = 2;
932 	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "dma_brt", CTLFLAG_RW,
933 	    &sc->sc_ah->ah_config.ah_dma_beacon_response_time, 0,
934 	    "Atheros HAL DMA beacon response time");
935 
936 	sc->sc_ah->ah_config.ah_sw_beacon_response_time = 10;
937 	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "sw_brt", CTLFLAG_RW,
938 	    &sc->sc_ah->ah_config.ah_sw_beacon_response_time, 0,
939 	    "Atheros HAL software beacon response time");
940 
941 	sc->sc_ah->ah_config.ah_additional_swba_backoff = 0;
942 	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "swba_backoff", CTLFLAG_RW,
943 	    &sc->sc_ah->ah_config.ah_additional_swba_backoff, 0,
944 	    "Atheros HAL additional SWBA backoff time");
945 
946 	sc->sc_ah->ah_config.ah_force_full_reset = 0;
947 	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "force_full_reset", CTLFLAG_RW,
948 	    &sc->sc_ah->ah_config.ah_force_full_reset, 0,
949 	    "Force full chip reset rather than a warm reset");
950 
951 	/*
952 	 * This is initialised by the driver.
953 	 */
954 	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "serialise_reg_war", CTLFLAG_RW,
955 	    &sc->sc_ah->ah_config.ah_serialise_reg_war, 0,
956 	    "Force register access serialisation");
957 }
958