2 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
34 * Driver for the Atheros Wireless LAN controller.
36 * This software is derived from work of Atsushi Onoe; his contribution
37 * is greatly appreciated.
43 * This is needed for register operations which are performed
44 * by the driver - eg, calls to ath_hal_gettsf32().
46 * It's also required for any AH_DEBUG checks in here, eg the
47 * module dependencies.
52 #include <sys/param.h>
53 #include <sys/systm.h>
54 #include <sys/sysctl.h>
56 #include <sys/malloc.h>
58 #include <sys/mutex.h>
59 #include <sys/kernel.h>
60 #include <sys/socket.h>
61 #include <sys/sockio.h>
62 #include <sys/errno.h>
63 #include <sys/callout.h>
65 #include <sys/endian.h>
66 #include <sys/kthread.h>
67 #include <sys/taskqueue.h>
69 #include <sys/module.h>
71 #include <sys/smp.h> /* for mp_ncpus */
73 #include <machine/bus.h>
76 #include <net/if_var.h>
77 #include <net/if_dl.h>
78 #include <net/if_media.h>
79 #include <net/if_types.h>
80 #include <net/if_arp.h>
81 #include <net/ethernet.h>
82 #include <net/if_llc.h>
84 #include <net80211/ieee80211_var.h>
85 #include <net80211/ieee80211_regdomain.h>
86 #ifdef IEEE80211_SUPPORT_SUPERG
87 #include <net80211/ieee80211_superg.h>
89 #ifdef IEEE80211_SUPPORT_TDMA
90 #include <net80211/ieee80211_tdma.h>
96 #include <netinet/in.h>
97 #include <netinet/if_ether.h>
100 #include <dev/ath/if_athvar.h>
101 #include <dev/ath/ath_hal/ah_devid.h> /* XXX for softled */
102 #include <dev/ath/ath_hal/ah_diagcodes.h>
104 #include <dev/ath/if_ath_debug.h>
105 #include <dev/ath/if_ath_misc.h>
106 #include <dev/ath/if_ath_tsf.h>
107 #include <dev/ath/if_ath_tx.h>
108 #include <dev/ath/if_ath_sysctl.h>
109 #include <dev/ath/if_ath_led.h>
110 #include <dev/ath/if_ath_keycache.h>
111 #include <dev/ath/if_ath_rx.h>
112 #include <dev/ath/if_ath_rx_edma.h>
113 #include <dev/ath/if_ath_tx_edma.h>
114 #include <dev/ath/if_ath_beacon.h>
115 #include <dev/ath/if_ath_btcoex.h>
116 #include <dev/ath/if_ath_spectral.h>
117 #include <dev/ath/if_ath_lna_div.h>
118 #include <dev/ath/if_athdfs.h>
121 #include <dev/ath/ath_tx99/ath_tx99.h>
125 #include <dev/ath/if_ath_alq.h>
129 * Only enable this if you're working on PS-POLL support.
134 * ATH_BCBUF determines the number of vap's that can transmit
135 * beacons and also (currently) the number of vap's that can
136 * have unique mac addresses/bssid. When staggering beacons
137 * 4 is probably a good max as otherwise the beacons become
138 * very closely spaced and there is limited time for cab q traffic
139 * to go out. You can burst beacons instead but that is not good
140 * for stations in power save and at some point you really want
141 * another radio (and channel).
143 * The limit on the number of mac addresses is tied to our use of
144 * the U/L bit and tracking addresses in a byte; it would be
145 * worthwhile to allow more for applications like proxy sta.
147 CTASSERT(ATH_BCBUF <= 8);
149 static struct ieee80211vap *ath_vap_create(struct ieee80211com *,
150 const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
151 const uint8_t [IEEE80211_ADDR_LEN],
152 const uint8_t [IEEE80211_ADDR_LEN]);
153 static void ath_vap_delete(struct ieee80211vap *);
154 static int ath_init(struct ath_softc *);
155 static void ath_stop(struct ath_softc *);
156 static int ath_reset_vap(struct ieee80211vap *, u_long);
157 static int ath_transmit(struct ieee80211com *, struct mbuf *);
158 static int ath_media_change(struct ifnet *);
159 static void ath_watchdog(void *);
160 static int ath_ioctl(struct ieee80211com *, u_long, void *);
161 static void ath_parent(struct ieee80211com *);
162 static void ath_fatal_proc(void *, int);
163 static void ath_bmiss_vap(struct ieee80211vap *);
164 static void ath_bmiss_proc(void *, int);
165 static void ath_key_update_begin(struct ieee80211vap *);
166 static void ath_key_update_end(struct ieee80211vap *);
167 static void ath_update_mcast_hw(struct ath_softc *);
168 static void ath_update_mcast(struct ieee80211com *);
169 static void ath_update_promisc(struct ieee80211com *);
170 static void ath_updateslot(struct ieee80211com *);
171 static void ath_bstuck_proc(void *, int);
172 static void ath_reset_proc(void *, int);
173 static int ath_desc_alloc(struct ath_softc *);
174 static void ath_desc_free(struct ath_softc *);
175 static struct ieee80211_node *ath_node_alloc(struct ieee80211vap *,
176 const uint8_t [IEEE80211_ADDR_LEN]);
177 static void ath_node_cleanup(struct ieee80211_node *);
178 static void ath_node_free(struct ieee80211_node *);
179 static void ath_node_getsignal(const struct ieee80211_node *,
181 static void ath_txq_init(struct ath_softc *sc, struct ath_txq *, int);
182 static struct ath_txq *ath_txq_setup(struct ath_softc*, int qtype, int subtype);
183 static int ath_tx_setup(struct ath_softc *, int, int);
184 static void ath_tx_cleanupq(struct ath_softc *, struct ath_txq *);
185 static void ath_tx_cleanup(struct ath_softc *);
186 static int ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq,
188 static void ath_tx_proc_q0(void *, int);
189 static void ath_tx_proc_q0123(void *, int);
190 static void ath_tx_proc(void *, int);
191 static void ath_txq_sched_tasklet(void *, int);
192 static int ath_chan_set(struct ath_softc *, struct ieee80211_channel *);
193 static void ath_chan_change(struct ath_softc *, struct ieee80211_channel *);
194 static void ath_scan_start(struct ieee80211com *);
195 static void ath_scan_end(struct ieee80211com *);
196 static void ath_set_channel(struct ieee80211com *);
197 #ifdef ATH_ENABLE_11N
198 static void ath_update_chw(struct ieee80211com *);
199 #endif /* ATH_ENABLE_11N */
200 static void ath_calibrate(void *);
201 static int ath_newstate(struct ieee80211vap *, enum ieee80211_state, int);
202 static void ath_setup_stationkey(struct ieee80211_node *);
203 static void ath_newassoc(struct ieee80211_node *, int);
204 static int ath_setregdomain(struct ieee80211com *,
205 struct ieee80211_regdomain *, int,
206 struct ieee80211_channel []);
207 static void ath_getradiocaps(struct ieee80211com *, int, int *,
208 struct ieee80211_channel []);
209 static int ath_getchannels(struct ath_softc *);
211 static int ath_rate_setup(struct ath_softc *, u_int mode);
212 static void ath_setcurmode(struct ath_softc *, enum ieee80211_phymode);
214 static void ath_announce(struct ath_softc *);
216 static void ath_dfs_tasklet(void *, int);
217 static void ath_node_powersave(struct ieee80211_node *, int);
218 static int ath_node_set_tim(struct ieee80211_node *, int);
219 static void ath_node_recv_pspoll(struct ieee80211_node *, struct mbuf *);
221 #ifdef IEEE80211_SUPPORT_TDMA
222 #include <dev/ath/if_ath_tdma.h>
225 SYSCTL_DECL(_hw_ath);
227 /* XXX validate sysctl values */
228 static int ath_longcalinterval = 30; /* long cals every 30 secs */
229 SYSCTL_INT(_hw_ath, OID_AUTO, longcal, CTLFLAG_RW, &ath_longcalinterval,
230 0, "long chip calibration interval (secs)");
231 static int ath_shortcalinterval = 100; /* short cals every 100 ms */
232 SYSCTL_INT(_hw_ath, OID_AUTO, shortcal, CTLFLAG_RW, &ath_shortcalinterval,
233 0, "short chip calibration interval (msecs)");
234 static int ath_resetcalinterval = 20*60; /* reset cal state 20 mins */
235 SYSCTL_INT(_hw_ath, OID_AUTO, resetcal, CTLFLAG_RW, &ath_resetcalinterval,
236 0, "reset chip calibration results (secs)");
237 static int ath_anicalinterval = 100; /* ANI calibration - 100 msec */
238 SYSCTL_INT(_hw_ath, OID_AUTO, anical, CTLFLAG_RW, &ath_anicalinterval,
239 0, "ANI calibration (msecs)");
241 int ath_rxbuf = ATH_RXBUF; /* # rx buffers to allocate */
242 SYSCTL_INT(_hw_ath, OID_AUTO, rxbuf, CTLFLAG_RWTUN, &ath_rxbuf,
243 0, "rx buffers allocated");
244 int ath_txbuf = ATH_TXBUF; /* # tx buffers to allocate */
245 SYSCTL_INT(_hw_ath, OID_AUTO, txbuf, CTLFLAG_RWTUN, &ath_txbuf,
246 0, "tx buffers allocated");
247 int ath_txbuf_mgmt = ATH_MGMT_TXBUF; /* # mgmt tx buffers to allocate */
248 SYSCTL_INT(_hw_ath, OID_AUTO, txbuf_mgmt, CTLFLAG_RWTUN, &ath_txbuf_mgmt,
249 0, "tx (mgmt) buffers allocated");
251 int ath_bstuck_threshold = 4; /* max missed beacons */
252 SYSCTL_INT(_hw_ath, OID_AUTO, bstuck, CTLFLAG_RW, &ath_bstuck_threshold,
253 0, "max missed beacon xmits before chip reset");
255 MALLOC_DEFINE(M_ATHDEV, "athdev", "ath driver dma buffers");
258 ath_legacy_attach_comp_func(struct ath_softc *sc)
262 * Special case certain configurations. Note the
263 * CAB queue is handled by these specially so don't
264 * include them when checking the txq setup mask.
266 switch (sc->sc_txqsetup &~ (1<<sc->sc_cabq->axq_qnum)) {
268 TASK_INIT(&sc->sc_txtask, 0, ath_tx_proc_q0, sc);
271 TASK_INIT(&sc->sc_txtask, 0, ath_tx_proc_q0123, sc);
274 TASK_INIT(&sc->sc_txtask, 0, ath_tx_proc, sc);
280 * Set the target power mode.
282 * If this is called during a point in time where
283 * the hardware is being programmed elsewhere, it will
284 * simply store it away and update it when all current
285 * uses of the hardware are completed.
288 _ath_power_setpower(struct ath_softc *sc, int power_state, const char *file, int line)
292 sc->sc_target_powerstate = power_state;
294 DPRINTF(sc, ATH_DEBUG_PWRSAVE, "%s: (%s:%d) state=%d, refcnt=%d\n",
299 sc->sc_powersave_refcnt);
301 if (sc->sc_powersave_refcnt == 0 &&
302 power_state != sc->sc_cur_powerstate) {
303 sc->sc_cur_powerstate = power_state;
304 ath_hal_setpower(sc->sc_ah, power_state);
307 * If the NIC is force-awake, then set the
308 * self-gen frame state appropriately.
310 * If the nic is in network sleep or full-sleep,
311 * we let the above call leave the self-gen
314 if (sc->sc_cur_powerstate == HAL_PM_AWAKE &&
315 sc->sc_target_selfgen_state != HAL_PM_AWAKE) {
316 ath_hal_setselfgenpower(sc->sc_ah,
317 sc->sc_target_selfgen_state);
323 * Set the current self-generated frames state.
325 * This is separate from the target power mode. The chip may be
326 * awake but the desired state is "sleep", so frames sent to the
327 * destination has PWRMGT=1 in the 802.11 header. The NIC also
328 * needs to know to set PWRMGT=1 in self-generated frames.
331 _ath_power_set_selfgen(struct ath_softc *sc, int power_state, const char *file, int line)
336 DPRINTF(sc, ATH_DEBUG_PWRSAVE, "%s: (%s:%d) state=%d, refcnt=%d\n",
341 sc->sc_target_selfgen_state);
343 sc->sc_target_selfgen_state = power_state;
346 * If the NIC is force-awake, then set the power state.
347 * Network-state and full-sleep will already transition it to
348 * mark self-gen frames as sleeping - and we can't
349 * guarantee the NIC is awake to program the self-gen frame
352 if (sc->sc_cur_powerstate == HAL_PM_AWAKE) {
353 ath_hal_setselfgenpower(sc->sc_ah, power_state);
358 * Set the hardware power mode and take a reference.
360 * This doesn't update the target power mode in the driver;
361 * it just updates the hardware power state.
363 * XXX it should only ever force the hardware awake; it should
364 * never be called to set it asleep.
367 _ath_power_set_power_state(struct ath_softc *sc, int power_state, const char *file, int line)
371 DPRINTF(sc, ATH_DEBUG_PWRSAVE, "%s: (%s:%d) state=%d, refcnt=%d\n",
376 sc->sc_powersave_refcnt);
378 sc->sc_powersave_refcnt++;
380 if (power_state != sc->sc_cur_powerstate) {
381 ath_hal_setpower(sc->sc_ah, power_state);
382 sc->sc_cur_powerstate = power_state;
385 * Adjust the self-gen powerstate if appropriate.
387 if (sc->sc_cur_powerstate == HAL_PM_AWAKE &&
388 sc->sc_target_selfgen_state != HAL_PM_AWAKE) {
389 ath_hal_setselfgenpower(sc->sc_ah,
390 sc->sc_target_selfgen_state);
397 * Restore the power save mode to what it once was.
399 * This will decrement the reference counter and once it hits
400 * zero, it'll restore the powersave state.
403 _ath_power_restore_power_state(struct ath_softc *sc, const char *file, int line)
408 DPRINTF(sc, ATH_DEBUG_PWRSAVE, "%s: (%s:%d) refcnt=%d, target state=%d\n",
412 sc->sc_powersave_refcnt,
413 sc->sc_target_powerstate);
415 if (sc->sc_powersave_refcnt == 0)
416 device_printf(sc->sc_dev, "%s: refcnt=0?\n", __func__);
418 sc->sc_powersave_refcnt--;
420 if (sc->sc_powersave_refcnt == 0 &&
421 sc->sc_target_powerstate != sc->sc_cur_powerstate) {
422 sc->sc_cur_powerstate = sc->sc_target_powerstate;
423 ath_hal_setpower(sc->sc_ah, sc->sc_target_powerstate);
427 * Adjust the self-gen powerstate if appropriate.
429 if (sc->sc_cur_powerstate == HAL_PM_AWAKE &&
430 sc->sc_target_selfgen_state != HAL_PM_AWAKE) {
431 ath_hal_setselfgenpower(sc->sc_ah,
432 sc->sc_target_selfgen_state);
438 * Configure the initial HAL configuration values based on bus
439 * specific parameters.
441 * Some PCI IDs and other information may need tweaking.
443 * XXX TODO: ath9k and the Atheros HAL only program comm2g_switch_enable
444 * if BT antenna diversity isn't enabled.
446 * So, let's also figure out how to enable BT diversity for AR9485.
449 ath_setup_hal_config(struct ath_softc *sc, HAL_OPS_CONFIG *ah_config)
451 /* XXX TODO: only for PCI devices? */
453 if (sc->sc_pci_devinfo & (ATH_PCI_CUS198 | ATH_PCI_CUS230)) {
454 ah_config->ath_hal_ext_lna_ctl_gpio = 0x200; /* bit 9 */
455 ah_config->ath_hal_ext_atten_margin_cfg = AH_TRUE;
456 ah_config->ath_hal_min_gainidx = AH_TRUE;
457 ah_config->ath_hal_ant_ctrl_comm2g_switch_enable = 0x000bbb88;
458 /* XXX low_rssi_thresh */
459 /* XXX fast_div_bias */
460 device_printf(sc->sc_dev, "configuring for %s\n",
461 (sc->sc_pci_devinfo & ATH_PCI_CUS198) ?
462 "CUS198" : "CUS230");
465 if (sc->sc_pci_devinfo & ATH_PCI_CUS217)
466 device_printf(sc->sc_dev, "CUS217 card detected\n");
468 if (sc->sc_pci_devinfo & ATH_PCI_CUS252)
469 device_printf(sc->sc_dev, "CUS252 card detected\n");
471 if (sc->sc_pci_devinfo & ATH_PCI_AR9565_1ANT)
472 device_printf(sc->sc_dev, "WB335 1-ANT card detected\n");
474 if (sc->sc_pci_devinfo & ATH_PCI_AR9565_2ANT)
475 device_printf(sc->sc_dev, "WB335 2-ANT card detected\n");
477 if (sc->sc_pci_devinfo & ATH_PCI_KILLER)
478 device_printf(sc->sc_dev, "Killer Wireless card detected\n");
482 * Some WB335 cards do not support antenna diversity. Since
483 * we use a hardcoded value for AR9565 instead of using the
484 * EEPROM/OTP data, remove the combining feature from
485 * the HW capabilities bitmap.
487 if (sc->sc_pci_devinfo & (ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_AR9565_2ANT)) {
488 if (!(sc->sc_pci_devinfo & ATH9K_PCI_BT_ANT_DIV))
489 pCap->hw_caps &= ~ATH9K_HW_CAP_ANT_DIV_COMB;
492 if (sc->sc_pci_devinfo & ATH9K_PCI_BT_ANT_DIV) {
493 pCap->hw_caps |= ATH9K_HW_CAP_BT_ANT_DIV;
494 device_printf(sc->sc_dev, "Set BT/WLAN RX diversity capability\n");
498 if (sc->sc_pci_devinfo & ATH_PCI_D3_L1_WAR) {
499 ah_config->ath_hal_pcie_waen = 0x0040473b;
500 device_printf(sc->sc_dev, "Enable WAR for ASPM D3/L1\n");
504 if (sc->sc_pci_devinfo & ATH9K_PCI_NO_PLL_PWRSAVE) {
505 ah->config.no_pll_pwrsave = true;
506 device_printf(sc->sc_dev, "Disable PLL PowerSave\n");
513 * Attempt to fetch the MAC address from the kernel environment.
515 * Returns 0, macaddr in macaddr if successful; -1 otherwise.
518 ath_fetch_mac_kenv(struct ath_softc *sc, uint8_t *macaddr)
525 * Fetch from the kenv rather than using hints.
527 * Hints would be nice but the transition to dynamic
528 * hints/kenv doesn't happen early enough for this
529 * to work reliably (eg on anything embedded.)
531 snprintf(devid_str, 32, "hint.%s.%d.macaddr",
532 device_get_name(sc->sc_dev),
533 device_get_unit(sc->sc_dev));
535 if ((local_macstr = kern_getenv(devid_str)) != NULL) {
536 uint32_t tmpmac[ETHER_ADDR_LEN];
540 /* Have a MAC address; should use it */
541 device_printf(sc->sc_dev,
542 "Overriding MAC address from environment: '%s'\n",
545 /* Extract out the MAC address */
546 count = sscanf(local_macstr, "%x%*c%x%*c%x%*c%x%*c%x%*c%x",
547 &tmpmac[0], &tmpmac[1],
548 &tmpmac[2], &tmpmac[3],
549 &tmpmac[4], &tmpmac[5]);
553 for (i = 0; i < ETHER_ADDR_LEN; i++)
554 macaddr[i] = tmpmac[i];
557 freeenv(local_macstr);
566 #define HAL_MODE_HT20 (HAL_MODE_11NG_HT20 | HAL_MODE_11NA_HT20)
567 #define HAL_MODE_HT40 \
568 (HAL_MODE_11NG_HT40PLUS | HAL_MODE_11NG_HT40MINUS | \
569 HAL_MODE_11NA_HT40PLUS | HAL_MODE_11NA_HT40MINUS)
571 ath_attach(u_int16_t devid, struct ath_softc *sc)
573 struct ieee80211com *ic = &sc->sc_ic;
574 struct ath_hal *ah = NULL;
578 int rx_chainmask, tx_chainmask;
579 HAL_OPS_CONFIG ah_config;
581 DPRINTF(sc, ATH_DEBUG_ANY, "%s: devid 0x%x\n", __func__, devid);
584 ic->ic_name = device_get_nameunit(sc->sc_dev);
587 * Configure the initial configuration data.
589 * This is stuff that may be needed early during attach
590 * rather than done via configuration calls later.
592 bzero(&ah_config, sizeof(ah_config));
593 ath_setup_hal_config(sc, &ah_config);
595 ah = ath_hal_attach(devid, sc, sc->sc_st, sc->sc_sh,
596 sc->sc_eepromdata, &ah_config, &status);
598 device_printf(sc->sc_dev,
599 "unable to attach hardware; HAL status %u\n", status);
604 sc->sc_invalid = 0; /* ready to go, enable interrupt handling */
606 sc->sc_debug = ath_debug;
610 * Setup the DMA/EDMA functions based on the current
613 * This is required before the descriptors are allocated.
615 if (ath_hal_hasedma(sc->sc_ah)) {
617 ath_recv_setup_edma(sc);
618 ath_xmit_setup_edma(sc);
620 ath_recv_setup_legacy(sc);
621 ath_xmit_setup_legacy(sc);
624 if (ath_hal_hasmybeacon(sc->sc_ah)) {
625 sc->sc_do_mybeacon = 1;
629 * Check if the MAC has multi-rate retry support.
630 * We do this by trying to setup a fake extended
631 * descriptor. MAC's that don't have support will
632 * return false w/o doing anything. MAC's that do
633 * support it will return true w/o doing anything.
635 sc->sc_mrretry = ath_hal_setupxtxdesc(ah, NULL, 0,0, 0,0, 0,0);
638 * Check if the device has hardware counters for PHY
639 * errors. If so we need to enable the MIB interrupt
640 * so we can act on stat triggers.
642 if (ath_hal_hwphycounters(ah))
646 * Get the hardware key cache size.
648 sc->sc_keymax = ath_hal_keycachesize(ah);
649 if (sc->sc_keymax > ATH_KEYMAX) {
650 device_printf(sc->sc_dev,
651 "Warning, using only %u of %u key cache slots\n",
652 ATH_KEYMAX, sc->sc_keymax);
653 sc->sc_keymax = ATH_KEYMAX;
656 * Reset the key cache since some parts do not
657 * reset the contents on initial power up.
659 for (i = 0; i < sc->sc_keymax; i++)
660 ath_hal_keyreset(ah, i);
663 * Collect the default channel list.
665 error = ath_getchannels(sc);
670 * Setup rate tables for all potential media types.
672 ath_rate_setup(sc, IEEE80211_MODE_11A);
673 ath_rate_setup(sc, IEEE80211_MODE_11B);
674 ath_rate_setup(sc, IEEE80211_MODE_11G);
675 ath_rate_setup(sc, IEEE80211_MODE_TURBO_A);
676 ath_rate_setup(sc, IEEE80211_MODE_TURBO_G);
677 ath_rate_setup(sc, IEEE80211_MODE_STURBO_A);
678 ath_rate_setup(sc, IEEE80211_MODE_11NA);
679 ath_rate_setup(sc, IEEE80211_MODE_11NG);
680 ath_rate_setup(sc, IEEE80211_MODE_HALF);
681 ath_rate_setup(sc, IEEE80211_MODE_QUARTER);
683 /* NB: setup here so ath_rate_update is happy */
684 ath_setcurmode(sc, IEEE80211_MODE_11A);
687 * Allocate TX descriptors and populate the lists.
689 error = ath_desc_alloc(sc);
691 device_printf(sc->sc_dev,
692 "failed to allocate TX descriptors: %d\n", error);
695 error = ath_txdma_setup(sc);
697 device_printf(sc->sc_dev,
698 "failed to allocate TX descriptors: %d\n", error);
703 * Allocate RX descriptors and populate the lists.
705 error = ath_rxdma_setup(sc);
707 device_printf(sc->sc_dev,
708 "failed to allocate RX descriptors: %d\n", error);
712 callout_init_mtx(&sc->sc_cal_ch, &sc->sc_mtx, 0);
713 callout_init_mtx(&sc->sc_wd_ch, &sc->sc_mtx, 0);
715 ATH_TXBUF_LOCK_INIT(sc);
717 sc->sc_tq = taskqueue_create("ath_taskq", M_NOWAIT,
718 taskqueue_thread_enqueue, &sc->sc_tq);
719 taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
720 device_get_nameunit(sc->sc_dev));
722 TASK_INIT(&sc->sc_rxtask, 0, sc->sc_rx.recv_tasklet, sc);
723 TASK_INIT(&sc->sc_bmisstask, 0, ath_bmiss_proc, sc);
724 TASK_INIT(&sc->sc_bstucktask,0, ath_bstuck_proc, sc);
725 TASK_INIT(&sc->sc_resettask,0, ath_reset_proc, sc);
726 TASK_INIT(&sc->sc_txqtask, 0, ath_txq_sched_tasklet, sc);
727 TASK_INIT(&sc->sc_fataltask, 0, ath_fatal_proc, sc);
730 * Allocate hardware transmit queues: one queue for
731 * beacon frames and one data queue for each QoS
732 * priority. Note that the hal handles resetting
733 * these queues at the needed time.
737 sc->sc_bhalq = ath_beaconq_setup(sc);
738 if (sc->sc_bhalq == (u_int) -1) {
739 device_printf(sc->sc_dev,
740 "unable to setup a beacon xmit queue!\n");
744 sc->sc_cabq = ath_txq_setup(sc, HAL_TX_QUEUE_CAB, 0);
745 if (sc->sc_cabq == NULL) {
746 device_printf(sc->sc_dev, "unable to setup CAB xmit queue!\n");
750 /* NB: insure BK queue is the lowest priority h/w queue */
751 if (!ath_tx_setup(sc, WME_AC_BK, HAL_WME_AC_BK)) {
752 device_printf(sc->sc_dev,
753 "unable to setup xmit queue for %s traffic!\n",
754 ieee80211_wme_acnames[WME_AC_BK]);
758 if (!ath_tx_setup(sc, WME_AC_BE, HAL_WME_AC_BE) ||
759 !ath_tx_setup(sc, WME_AC_VI, HAL_WME_AC_VI) ||
760 !ath_tx_setup(sc, WME_AC_VO, HAL_WME_AC_VO)) {
762 * Not enough hardware tx queues to properly do WME;
763 * just punt and assign them all to the same h/w queue.
764 * We could do a better job of this if, for example,
765 * we allocate queues when we switch from station to
768 if (sc->sc_ac2q[WME_AC_VI] != NULL)
769 ath_tx_cleanupq(sc, sc->sc_ac2q[WME_AC_VI]);
770 if (sc->sc_ac2q[WME_AC_BE] != NULL)
771 ath_tx_cleanupq(sc, sc->sc_ac2q[WME_AC_BE]);
772 sc->sc_ac2q[WME_AC_BE] = sc->sc_ac2q[WME_AC_BK];
773 sc->sc_ac2q[WME_AC_VI] = sc->sc_ac2q[WME_AC_BK];
774 sc->sc_ac2q[WME_AC_VO] = sc->sc_ac2q[WME_AC_BK];
778 * Attach the TX completion function.
780 * The non-EDMA chips may have some special case optimisations;
781 * this method gives everyone a chance to attach cleanly.
783 sc->sc_tx.xmit_attach_comp_func(sc);
786 * Setup rate control. Some rate control modules
787 * call back to change the anntena state so expose
788 * the necessary entry points.
789 * XXX maybe belongs in struct ath_ratectrl?
791 sc->sc_setdefantenna = ath_setdefantenna;
792 sc->sc_rc = ath_rate_attach(sc);
793 if (sc->sc_rc == NULL) {
798 /* Attach DFS module */
799 if (! ath_dfs_attach(sc)) {
800 device_printf(sc->sc_dev,
801 "%s: unable to attach DFS\n", __func__);
806 /* Attach spectral module */
807 if (ath_spectral_attach(sc) < 0) {
808 device_printf(sc->sc_dev,
809 "%s: unable to attach spectral\n", __func__);
814 /* Attach bluetooth coexistence module */
815 if (ath_btcoex_attach(sc) < 0) {
816 device_printf(sc->sc_dev,
817 "%s: unable to attach bluetooth coexistence\n", __func__);
822 /* Attach LNA diversity module */
823 if (ath_lna_div_attach(sc) < 0) {
824 device_printf(sc->sc_dev,
825 "%s: unable to attach LNA diversity\n", __func__);
830 /* Start DFS processing tasklet */
831 TASK_INIT(&sc->sc_dfstask, 0, ath_dfs_tasklet, sc);
833 /* Configure LED state */
836 sc->sc_ledon = 0; /* low true */
837 sc->sc_ledidle = (2700*hz)/1000; /* 2.7sec */
838 callout_init(&sc->sc_ledtimer, 1);
841 * Don't setup hardware-based blinking.
843 * Although some NICs may have this configured in the
844 * default reset register values, the user may wish
845 * to alter which pins have which function.
847 * The reference driver attaches the MAC network LED to GPIO1 and
848 * the MAC power LED to GPIO2. However, the DWA-552 cardbus
849 * NIC has these reversed.
851 sc->sc_hardled = (1 == 0);
852 sc->sc_led_net_pin = -1;
853 sc->sc_led_pwr_pin = -1;
855 * Auto-enable soft led processing for IBM cards and for
856 * 5211 minipci cards. Users can also manually enable/disable
857 * support with a sysctl.
859 sc->sc_softled = (devid == AR5212_DEVID_IBM || devid == AR5211_DEVID);
861 ath_hal_setledstate(ah, HAL_LED_INIT);
863 /* XXX not right but it's not used anywhere important */
864 ic->ic_phytype = IEEE80211_T_OFDM;
865 ic->ic_opmode = IEEE80211_M_STA;
867 IEEE80211_C_STA /* station mode */
868 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */
869 | IEEE80211_C_HOSTAP /* hostap mode */
870 | IEEE80211_C_MONITOR /* monitor mode */
871 | IEEE80211_C_AHDEMO /* adhoc demo mode */
872 | IEEE80211_C_WDS /* 4-address traffic works */
873 | IEEE80211_C_MBSS /* mesh point link mode */
874 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
875 | IEEE80211_C_SHSLOT /* short slot time supported */
876 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */
877 #ifndef ATH_ENABLE_11N
878 | IEEE80211_C_BGSCAN /* capable of bg scanning */
880 | IEEE80211_C_TXFRAG /* handle tx frags */
881 #ifdef ATH_ENABLE_DFS
882 | IEEE80211_C_DFS /* Enable radar detection */
884 | IEEE80211_C_PMGT /* Station side power mgmt */
885 | IEEE80211_C_SWSLEEP
888 * Query the hal to figure out h/w crypto support.
890 if (ath_hal_ciphersupported(ah, HAL_CIPHER_WEP))
891 ic->ic_cryptocaps |= IEEE80211_CRYPTO_WEP;
892 if (ath_hal_ciphersupported(ah, HAL_CIPHER_AES_OCB))
893 ic->ic_cryptocaps |= IEEE80211_CRYPTO_AES_OCB;
894 if (ath_hal_ciphersupported(ah, HAL_CIPHER_AES_CCM))
895 ic->ic_cryptocaps |= IEEE80211_CRYPTO_AES_CCM;
896 if (ath_hal_ciphersupported(ah, HAL_CIPHER_CKIP))
897 ic->ic_cryptocaps |= IEEE80211_CRYPTO_CKIP;
898 if (ath_hal_ciphersupported(ah, HAL_CIPHER_TKIP)) {
899 ic->ic_cryptocaps |= IEEE80211_CRYPTO_TKIP;
901 * Check if h/w does the MIC and/or whether the
902 * separate key cache entries are required to
903 * handle both tx+rx MIC keys.
905 if (ath_hal_ciphersupported(ah, HAL_CIPHER_MIC))
906 ic->ic_cryptocaps |= IEEE80211_CRYPTO_TKIPMIC;
908 * If the h/w supports storing tx+rx MIC keys
909 * in one cache slot automatically enable use.
911 if (ath_hal_hastkipsplit(ah) ||
912 !ath_hal_settkipsplit(ah, AH_FALSE))
915 * If the h/w can do TKIP MIC together with WME then
916 * we use it; otherwise we force the MIC to be done
917 * in software by the net80211 layer.
919 if (ath_hal_haswmetkipmic(ah))
920 sc->sc_wmetkipmic = 1;
922 sc->sc_hasclrkey = ath_hal_ciphersupported(ah, HAL_CIPHER_CLR);
924 * Check for multicast key search support.
926 if (ath_hal_hasmcastkeysearch(sc->sc_ah) &&
927 !ath_hal_getmcastkeysearch(sc->sc_ah)) {
928 ath_hal_setmcastkeysearch(sc->sc_ah, 1);
930 sc->sc_mcastkey = ath_hal_getmcastkeysearch(ah);
932 * Mark key cache slots associated with global keys
933 * as in use. If we knew TKIP was not to be used we
934 * could leave the +32, +64, and +32+64 slots free.
936 for (i = 0; i < IEEE80211_WEP_NKID; i++) {
937 setbit(sc->sc_keymap, i);
938 setbit(sc->sc_keymap, i+64);
939 if (sc->sc_splitmic) {
940 setbit(sc->sc_keymap, i+32);
941 setbit(sc->sc_keymap, i+32+64);
945 * TPC support can be done either with a global cap or
946 * per-packet support. The latter is not available on
947 * all parts. We're a bit pedantic here as all parts
948 * support a global cap.
950 if (ath_hal_hastpc(ah) || ath_hal_hastxpowlimit(ah))
951 ic->ic_caps |= IEEE80211_C_TXPMGT;
954 * Mark WME capability only if we have sufficient
955 * hardware queues to do proper priority scheduling.
957 if (sc->sc_ac2q[WME_AC_BE] != sc->sc_ac2q[WME_AC_BK])
958 ic->ic_caps |= IEEE80211_C_WME;
960 * Check for misc other capabilities.
962 if (ath_hal_hasbursting(ah))
963 ic->ic_caps |= IEEE80211_C_BURST;
964 sc->sc_hasbmask = ath_hal_hasbssidmask(ah);
965 sc->sc_hasbmatch = ath_hal_hasbssidmatch(ah);
966 sc->sc_hastsfadd = ath_hal_hastsfadjust(ah);
967 sc->sc_rxslink = ath_hal_self_linked_final_rxdesc(ah);
968 sc->sc_rxtsf32 = ath_hal_has_long_rxdesc_tsf(ah);
969 sc->sc_hasenforcetxop = ath_hal_hasenforcetxop(ah);
970 sc->sc_rx_lnamixer = ath_hal_hasrxlnamixer(ah);
971 sc->sc_hasdivcomb = ath_hal_hasdivantcomb(ah);
973 if (ath_hal_hasfastframes(ah))
974 ic->ic_caps |= IEEE80211_C_FF;
975 wmodes = ath_hal_getwirelessmodes(ah);
976 if (wmodes & (HAL_MODE_108G|HAL_MODE_TURBO))
977 ic->ic_caps |= IEEE80211_C_TURBOP;
978 #ifdef IEEE80211_SUPPORT_TDMA
979 if (ath_hal_macversion(ah) > 0x78) {
980 ic->ic_caps |= IEEE80211_C_TDMA; /* capable of TDMA */
981 ic->ic_tdma_update = ath_tdma_update;
986 * TODO: enforce that at least this many frames are available
987 * in the txbuf list before allowing data frames (raw or
988 * otherwise) to be transmitted.
990 sc->sc_txq_data_minfree = 10;
992 * Leave this as default to maintain legacy behaviour.
993 * Shortening the cabq/mcastq may end up causing some
994 * undesirable behaviour.
996 sc->sc_txq_mcastq_maxdepth = ath_txbuf;
999 * How deep can the node software TX queue get whilst it's asleep.
1001 sc->sc_txq_node_psq_maxdepth = 16;
1004 * Default the maximum queue depth for a given node
1005 * to 1/4'th the TX buffers, or 64, whichever
1008 sc->sc_txq_node_maxdepth = MAX(64, ath_txbuf / 4);
1010 /* Enable CABQ by default */
1011 sc->sc_cabq_enable = 1;
1014 * Allow the TX and RX chainmasks to be overridden by
1015 * environment variables and/or device.hints.
1017 * This must be done early - before the hardware is
1018 * calibrated or before the 802.11n stream calculation
1021 if (resource_int_value(device_get_name(sc->sc_dev),
1022 device_get_unit(sc->sc_dev), "rx_chainmask",
1023 &rx_chainmask) == 0) {
1024 device_printf(sc->sc_dev, "Setting RX chainmask to 0x%x\n",
1026 (void) ath_hal_setrxchainmask(sc->sc_ah, rx_chainmask);
1028 if (resource_int_value(device_get_name(sc->sc_dev),
1029 device_get_unit(sc->sc_dev), "tx_chainmask",
1030 &tx_chainmask) == 0) {
1031 device_printf(sc->sc_dev, "Setting TX chainmask to 0x%x\n",
1033 (void) ath_hal_settxchainmask(sc->sc_ah, tx_chainmask);
1037 * Query the TX/RX chainmask configuration.
1039 * This is only relevant for 11n devices.
1041 ath_hal_getrxchainmask(ah, &sc->sc_rxchainmask);
1042 ath_hal_gettxchainmask(ah, &sc->sc_txchainmask);
1045 * Disable MRR with protected frames by default.
1046 * Only 802.11n series NICs can handle this.
1048 sc->sc_mrrprot = 0; /* XXX should be a capability */
1051 * Query the enterprise mode information the HAL.
1053 if (ath_hal_getcapability(ah, HAL_CAP_ENTERPRISE_MODE, 0,
1054 &sc->sc_ent_cfg) == HAL_OK)
1057 #ifdef ATH_ENABLE_11N
1059 * Query HT capabilities
1061 if (ath_hal_getcapability(ah, HAL_CAP_HT, 0, NULL) == HAL_OK &&
1062 (wmodes & (HAL_MODE_HT20 | HAL_MODE_HT40))) {
1065 device_printf(sc->sc_dev, "[HT] enabling HT modes\n");
1067 sc->sc_mrrprot = 1; /* XXX should be a capability */
1069 ic->ic_htcaps = IEEE80211_HTC_HT /* HT operation */
1070 | IEEE80211_HTC_AMPDU /* A-MPDU tx/rx */
1071 | IEEE80211_HTC_AMSDU /* A-MSDU tx/rx */
1072 | IEEE80211_HTCAP_MAXAMSDU_3839
1073 /* max A-MSDU length */
1074 | IEEE80211_HTCAP_SMPS_OFF; /* SM power save off */
1078 * Enable short-GI for HT20 only if the hardware
1079 * advertises support.
1080 * Notably, anything earlier than the AR9287 doesn't.
1082 if ((ath_hal_getcapability(ah,
1083 HAL_CAP_HT20_SGI, 0, NULL) == HAL_OK) &&
1084 (wmodes & HAL_MODE_HT20)) {
1085 device_printf(sc->sc_dev,
1086 "[HT] enabling short-GI in 20MHz mode\n");
1087 ic->ic_htcaps |= IEEE80211_HTCAP_SHORTGI20;
1090 if (wmodes & HAL_MODE_HT40)
1091 ic->ic_htcaps |= IEEE80211_HTCAP_CHWIDTH40
1092 | IEEE80211_HTCAP_SHORTGI40;
1095 * TX/RX streams need to be taken into account when
1096 * negotiating which MCS rates it'll receive and
1097 * what MCS rates are available for TX.
1099 (void) ath_hal_getcapability(ah, HAL_CAP_STREAMS, 0, &txs);
1100 (void) ath_hal_getcapability(ah, HAL_CAP_STREAMS, 1, &rxs);
1101 ic->ic_txstream = txs;
1102 ic->ic_rxstream = rxs;
1105 * Setup TX and RX STBC based on what the HAL allows and
1106 * the currently configured chainmask set.
1107 * Ie - don't enable STBC TX if only one chain is enabled.
1108 * STBC RX is fine on a single RX chain; it just won't
1109 * provide any real benefit.
1111 if (ath_hal_getcapability(ah, HAL_CAP_RX_STBC, 0,
1114 device_printf(sc->sc_dev,
1115 "[HT] 1 stream STBC receive enabled\n");
1116 ic->ic_htcaps |= IEEE80211_HTCAP_RXSTBC_1STREAM;
1118 if (txs > 1 && ath_hal_getcapability(ah, HAL_CAP_TX_STBC, 0,
1121 device_printf(sc->sc_dev,
1122 "[HT] 1 stream STBC transmit enabled\n");
1123 ic->ic_htcaps |= IEEE80211_HTCAP_TXSTBC;
1126 (void) ath_hal_getcapability(ah, HAL_CAP_RTS_AGGR_LIMIT, 1,
1127 &sc->sc_rts_aggr_limit);
1128 if (sc->sc_rts_aggr_limit != (64 * 1024))
1129 device_printf(sc->sc_dev,
1130 "[HT] RTS aggregates limited to %d KiB\n",
1131 sc->sc_rts_aggr_limit / 1024);
1133 device_printf(sc->sc_dev,
1134 "[HT] %d RX streams; %d TX streams\n", rxs, txs);
1139 * Initial aggregation settings.
1141 sc->sc_hwq_limit_aggr = ATH_AGGR_MIN_QDEPTH;
1142 sc->sc_hwq_limit_nonaggr = ATH_NONAGGR_MIN_QDEPTH;
1143 sc->sc_tid_hwq_lo = ATH_AGGR_SCHED_LOW;
1144 sc->sc_tid_hwq_hi = ATH_AGGR_SCHED_HIGH;
1145 sc->sc_aggr_limit = ATH_AGGR_MAXSIZE;
1146 sc->sc_delim_min_pad = 0;
1149 * Check if the hardware requires PCI register serialisation.
1150 * Some of the Owl based MACs require this.
1153 ath_hal_getcapability(ah, HAL_CAP_SERIALISE_WAR,
1154 0, NULL) == HAL_OK) {
1155 sc->sc_ah->ah_config.ah_serialise_reg_war = 1;
1156 device_printf(sc->sc_dev,
1157 "Enabling register serialisation\n");
1161 * Initialise the deferred completed RX buffer list.
1163 TAILQ_INIT(&sc->sc_rx_rxlist[HAL_RX_QUEUE_HP]);
1164 TAILQ_INIT(&sc->sc_rx_rxlist[HAL_RX_QUEUE_LP]);
1167 * Indicate we need the 802.11 header padded to a
1168 * 32-bit boundary for 4-address and QoS frames.
1170 ic->ic_flags |= IEEE80211_F_DATAPAD;
1173 * Query the hal about antenna support.
1175 sc->sc_defant = ath_hal_getdefantenna(ah);
1178 * Not all chips have the VEOL support we want to
1179 * use with IBSS beacons; check here for it.
1181 sc->sc_hasveol = ath_hal_hasveol(ah);
1183 /* get mac address from kenv first, then hardware */
1184 if (ath_fetch_mac_kenv(sc, ic->ic_macaddr) == 0) {
1185 /* Tell the HAL now about the new MAC */
1186 ath_hal_setmac(ah, ic->ic_macaddr);
1188 ath_hal_getmac(ah, ic->ic_macaddr);
1191 if (sc->sc_hasbmask)
1192 ath_hal_getbssidmask(ah, sc->sc_hwbssidmask);
1194 /* NB: used to size node table key mapping array */
1195 ic->ic_max_keyix = sc->sc_keymax;
1196 /* call MI attach routine. */
1197 ieee80211_ifattach(ic);
1198 ic->ic_setregdomain = ath_setregdomain;
1199 ic->ic_getradiocaps = ath_getradiocaps;
1200 sc->sc_opmode = HAL_M_STA;
1202 /* override default methods */
1203 ic->ic_ioctl = ath_ioctl;
1204 ic->ic_parent = ath_parent;
1205 ic->ic_transmit = ath_transmit;
1206 ic->ic_newassoc = ath_newassoc;
1207 ic->ic_updateslot = ath_updateslot;
1208 ic->ic_wme.wme_update = ath_wme_update;
1209 ic->ic_vap_create = ath_vap_create;
1210 ic->ic_vap_delete = ath_vap_delete;
1211 ic->ic_raw_xmit = ath_raw_xmit;
1212 ic->ic_update_mcast = ath_update_mcast;
1213 ic->ic_update_promisc = ath_update_promisc;
1214 ic->ic_node_alloc = ath_node_alloc;
1215 sc->sc_node_free = ic->ic_node_free;
1216 ic->ic_node_free = ath_node_free;
1217 sc->sc_node_cleanup = ic->ic_node_cleanup;
1218 ic->ic_node_cleanup = ath_node_cleanup;
1219 ic->ic_node_getsignal = ath_node_getsignal;
1220 ic->ic_scan_start = ath_scan_start;
1221 ic->ic_scan_end = ath_scan_end;
1222 ic->ic_set_channel = ath_set_channel;
1223 #ifdef ATH_ENABLE_11N
1224 /* 802.11n specific - but just override anyway */
1225 sc->sc_addba_request = ic->ic_addba_request;
1226 sc->sc_addba_response = ic->ic_addba_response;
1227 sc->sc_addba_stop = ic->ic_addba_stop;
1228 sc->sc_bar_response = ic->ic_bar_response;
1229 sc->sc_addba_response_timeout = ic->ic_addba_response_timeout;
1231 ic->ic_addba_request = ath_addba_request;
1232 ic->ic_addba_response = ath_addba_response;
1233 ic->ic_addba_response_timeout = ath_addba_response_timeout;
1234 ic->ic_addba_stop = ath_addba_stop;
1235 ic->ic_bar_response = ath_bar_response;
1237 ic->ic_update_chw = ath_update_chw;
1238 #endif /* ATH_ENABLE_11N */
1240 #ifdef ATH_ENABLE_RADIOTAP_VENDOR_EXT
1242 * There's one vendor bitmap entry in the RX radiotap
1243 * header; make sure that's taken into account.
1245 ieee80211_radiotap_attachv(ic,
1246 &sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th), 0,
1247 ATH_TX_RADIOTAP_PRESENT,
1248 &sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th), 1,
1249 ATH_RX_RADIOTAP_PRESENT);
1252 * No vendor bitmap/extensions are present.
1254 ieee80211_radiotap_attach(ic,
1255 &sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th),
1256 ATH_TX_RADIOTAP_PRESENT,
1257 &sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th),
1258 ATH_RX_RADIOTAP_PRESENT);
1259 #endif /* ATH_ENABLE_RADIOTAP_VENDOR_EXT */
1262 * Setup the ALQ logging if required
1264 #ifdef ATH_DEBUG_ALQ
1265 if_ath_alq_init(&sc->sc_alq, device_get_nameunit(sc->sc_dev));
1266 if_ath_alq_setcfg(&sc->sc_alq,
1267 sc->sc_ah->ah_macVersion,
1268 sc->sc_ah->ah_macRev,
1269 sc->sc_ah->ah_phyRev,
1270 sc->sc_ah->ah_magic);
1274 * Setup dynamic sysctl's now that country code and
1275 * regdomain are available from the hal.
1277 ath_sysctlattach(sc);
1278 ath_sysctl_stats_attach(sc);
1279 ath_sysctl_hal_attach(sc);
1282 ieee80211_announce(ic);
1286 * Put it to sleep for now.
1289 ath_power_setpower(sc, HAL_PM_FULL_SLEEP);
1296 ath_txdma_teardown(sc);
1297 ath_rxdma_teardown(sc);
1306 ath_detach(struct ath_softc *sc)
1310 * NB: the order of these is important:
1311 * o stop the chip so no more interrupts will fire
1312 * o call the 802.11 layer before detaching the hal to
1313 * insure callbacks into the driver to delete global
1314 * key cache entries can be handled
1315 * o free the taskqueue which drains any pending tasks
1316 * o reclaim the tx queue data structures after calling
1317 * the 802.11 layer as we'll get called back to reclaim
1318 * node state and potentially want to use them
1319 * o to cleanup the tx queues the hal is called, so detach
1321 * Other than that, it's straightforward...
1325 * XXX Wake the hardware up first. ath_stop() will still
1326 * wake it up first, but I'd rather do it here just to
1327 * ensure it's awake.
1330 ath_power_set_power_state(sc, HAL_PM_AWAKE);
1331 ath_power_setpower(sc, HAL_PM_AWAKE);
1334 * Stop things cleanly.
1339 ieee80211_ifdetach(&sc->sc_ic);
1340 taskqueue_free(sc->sc_tq);
1341 #ifdef ATH_TX99_DIAG
1342 if (sc->sc_tx99 != NULL)
1343 sc->sc_tx99->detach(sc->sc_tx99);
1345 ath_rate_detach(sc->sc_rc);
1346 #ifdef ATH_DEBUG_ALQ
1347 if_ath_alq_tidyup(&sc->sc_alq);
1349 ath_lna_div_detach(sc);
1350 ath_btcoex_detach(sc);
1351 ath_spectral_detach(sc);
1354 ath_txdma_teardown(sc);
1355 ath_rxdma_teardown(sc);
1357 ath_hal_detach(sc->sc_ah); /* NB: sets chip in full sleep */
1363 * MAC address handling for multiple BSS on the same radio.
1364 * The first vap uses the MAC address from the EEPROM. For
1365 * subsequent vap's we set the U/L bit (bit 1) in the MAC
1366 * address and use the next six bits as an index.
1369 assign_address(struct ath_softc *sc, uint8_t mac[IEEE80211_ADDR_LEN], int clone)
1373 if (clone && sc->sc_hasbmask) {
1374 /* NB: we only do this if h/w supports multiple bssid */
1375 for (i = 0; i < 8; i++)
1376 if ((sc->sc_bssidmask & (1<<i)) == 0)
1379 mac[0] |= (i << 2)|0x2;
1382 sc->sc_bssidmask |= 1<<i;
1383 sc->sc_hwbssidmask[0] &= ~mac[0];
1389 reclaim_address(struct ath_softc *sc, const uint8_t mac[IEEE80211_ADDR_LEN])
1391 int i = mac[0] >> 2;
1394 if (i != 0 || --sc->sc_nbssid0 == 0) {
1395 sc->sc_bssidmask &= ~(1<<i);
1396 /* recalculate bssid mask from remaining addresses */
1398 for (i = 1; i < 8; i++)
1399 if (sc->sc_bssidmask & (1<<i))
1400 mask &= ~((i<<2)|0x2);
1401 sc->sc_hwbssidmask[0] |= mask;
1406 * Assign a beacon xmit slot. We try to space out
1407 * assignments so when beacons are staggered the
1408 * traffic coming out of the cab q has maximal time
1409 * to go out before the next beacon is scheduled.
1412 assign_bslot(struct ath_softc *sc)
1417 for (slot = 0; slot < ATH_BCBUF; slot++)
1418 if (sc->sc_bslot[slot] == NULL) {
1419 if (sc->sc_bslot[(slot+1)%ATH_BCBUF] == NULL &&
1420 sc->sc_bslot[(slot-1)%ATH_BCBUF] == NULL)
1423 /* NB: keep looking for a double slot */
1428 static struct ieee80211vap *
1429 ath_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
1430 enum ieee80211_opmode opmode, int flags,
1431 const uint8_t bssid[IEEE80211_ADDR_LEN],
1432 const uint8_t mac0[IEEE80211_ADDR_LEN])
1434 struct ath_softc *sc = ic->ic_softc;
1435 struct ath_vap *avp;
1436 struct ieee80211vap *vap;
1437 uint8_t mac[IEEE80211_ADDR_LEN];
1438 int needbeacon, error;
1439 enum ieee80211_opmode ic_opmode;
1441 avp = (struct ath_vap *) malloc(sizeof(struct ath_vap),
1442 M_80211_VAP, M_WAITOK | M_ZERO);
1444 IEEE80211_ADDR_COPY(mac, mac0);
1447 ic_opmode = opmode; /* default to opmode of new vap */
1449 case IEEE80211_M_STA:
1450 if (sc->sc_nstavaps != 0) { /* XXX only 1 for now */
1451 device_printf(sc->sc_dev, "only 1 sta vap supported\n");
1456 * With multiple vaps we must fall back
1457 * to s/w beacon miss handling.
1459 flags |= IEEE80211_CLONE_NOBEACONS;
1461 if (flags & IEEE80211_CLONE_NOBEACONS) {
1463 * Station mode w/o beacons are implemented w/ AP mode.
1465 ic_opmode = IEEE80211_M_HOSTAP;
1468 case IEEE80211_M_IBSS:
1469 if (sc->sc_nvaps != 0) { /* XXX only 1 for now */
1470 device_printf(sc->sc_dev,
1471 "only 1 ibss vap supported\n");
1476 case IEEE80211_M_AHDEMO:
1477 #ifdef IEEE80211_SUPPORT_TDMA
1478 if (flags & IEEE80211_CLONE_TDMA) {
1479 if (sc->sc_nvaps != 0) {
1480 device_printf(sc->sc_dev,
1481 "only 1 tdma vap supported\n");
1485 flags |= IEEE80211_CLONE_NOBEACONS;
1489 case IEEE80211_M_MONITOR:
1490 if (sc->sc_nvaps != 0 && ic->ic_opmode != opmode) {
1492 * Adopt existing mode. Adding a monitor or ahdemo
1493 * vap to an existing configuration is of dubious
1494 * value but should be ok.
1496 /* XXX not right for monitor mode */
1497 ic_opmode = ic->ic_opmode;
1500 case IEEE80211_M_HOSTAP:
1501 case IEEE80211_M_MBSS:
1504 case IEEE80211_M_WDS:
1505 if (sc->sc_nvaps != 0 && ic->ic_opmode == IEEE80211_M_STA) {
1506 device_printf(sc->sc_dev,
1507 "wds not supported in sta mode\n");
1511 * Silently remove any request for a unique
1512 * bssid; WDS vap's always share the local
1515 flags &= ~IEEE80211_CLONE_BSSID;
1516 if (sc->sc_nvaps == 0)
1517 ic_opmode = IEEE80211_M_HOSTAP;
1519 ic_opmode = ic->ic_opmode;
1522 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode);
1526 * Check that a beacon buffer is available; the code below assumes it.
1528 if (needbeacon & TAILQ_EMPTY(&sc->sc_bbuf)) {
1529 device_printf(sc->sc_dev, "no beacon buffer available\n");
1534 if (opmode == IEEE80211_M_HOSTAP || opmode == IEEE80211_M_MBSS) {
1535 assign_address(sc, mac, flags & IEEE80211_CLONE_BSSID);
1536 ath_hal_setbssidmask(sc->sc_ah, sc->sc_hwbssidmask);
1540 /* XXX can't hold mutex across if_alloc */
1542 error = ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
1545 device_printf(sc->sc_dev, "%s: error %d creating vap\n",
1550 /* h/w crypto support */
1551 vap->iv_key_alloc = ath_key_alloc;
1552 vap->iv_key_delete = ath_key_delete;
1553 vap->iv_key_set = ath_key_set;
1554 vap->iv_key_update_begin = ath_key_update_begin;
1555 vap->iv_key_update_end = ath_key_update_end;
1557 /* override various methods */
1558 avp->av_recv_mgmt = vap->iv_recv_mgmt;
1559 vap->iv_recv_mgmt = ath_recv_mgmt;
1560 vap->iv_reset = ath_reset_vap;
1561 vap->iv_update_beacon = ath_beacon_update;
1562 avp->av_newstate = vap->iv_newstate;
1563 vap->iv_newstate = ath_newstate;
1564 avp->av_bmiss = vap->iv_bmiss;
1565 vap->iv_bmiss = ath_bmiss_vap;
1567 avp->av_node_ps = vap->iv_node_ps;
1568 vap->iv_node_ps = ath_node_powersave;
1570 avp->av_set_tim = vap->iv_set_tim;
1571 vap->iv_set_tim = ath_node_set_tim;
1573 avp->av_recv_pspoll = vap->iv_recv_pspoll;
1574 vap->iv_recv_pspoll = ath_node_recv_pspoll;
1576 /* Set default parameters */
1579 * Anything earlier than some AR9300 series MACs don't
1580 * support a smaller MPDU density.
1582 vap->iv_ampdu_density = IEEE80211_HTCAP_MPDUDENSITY_8;
1584 * All NICs can handle the maximum size, however
1585 * AR5416 based MACs can only TX aggregates w/ RTS
1586 * protection when the total aggregate size is <= 8k.
1587 * However, for now that's enforced by the TX path.
1589 vap->iv_ampdu_rxmax = IEEE80211_HTCAP_MAXRXAMPDU_64K;
1594 * Allocate beacon state and setup the q for buffered
1595 * multicast frames. We know a beacon buffer is
1596 * available because we checked above.
1598 avp->av_bcbuf = TAILQ_FIRST(&sc->sc_bbuf);
1599 TAILQ_REMOVE(&sc->sc_bbuf, avp->av_bcbuf, bf_list);
1600 if (opmode != IEEE80211_M_IBSS || !sc->sc_hasveol) {
1602 * Assign the vap to a beacon xmit slot. As above
1603 * this cannot fail to find a free one.
1605 avp->av_bslot = assign_bslot(sc);
1606 KASSERT(sc->sc_bslot[avp->av_bslot] == NULL,
1607 ("beacon slot %u not empty", avp->av_bslot));
1608 sc->sc_bslot[avp->av_bslot] = vap;
1611 if (sc->sc_hastsfadd && sc->sc_nbcnvaps > 0) {
1613 * Multple vaps are to transmit beacons and we
1614 * have h/w support for TSF adjusting; enable
1615 * use of staggered beacons.
1617 sc->sc_stagbeacons = 1;
1619 ath_txq_init(sc, &avp->av_mcastq, ATH_TXQ_SWQ);
1622 ic->ic_opmode = ic_opmode;
1623 if (opmode != IEEE80211_M_WDS) {
1625 if (opmode == IEEE80211_M_STA)
1627 if (opmode == IEEE80211_M_MBSS)
1630 switch (ic_opmode) {
1631 case IEEE80211_M_IBSS:
1632 sc->sc_opmode = HAL_M_IBSS;
1634 case IEEE80211_M_STA:
1635 sc->sc_opmode = HAL_M_STA;
1637 case IEEE80211_M_AHDEMO:
1638 #ifdef IEEE80211_SUPPORT_TDMA
1639 if (vap->iv_caps & IEEE80211_C_TDMA) {
1641 /* NB: disable tsf adjust */
1642 sc->sc_stagbeacons = 0;
1645 * NB: adhoc demo mode is a pseudo mode; to the hal it's
1650 case IEEE80211_M_HOSTAP:
1651 case IEEE80211_M_MBSS:
1652 sc->sc_opmode = HAL_M_HOSTAP;
1654 case IEEE80211_M_MONITOR:
1655 sc->sc_opmode = HAL_M_MONITOR;
1658 /* XXX should not happen */
1661 if (sc->sc_hastsfadd) {
1663 * Configure whether or not TSF adjust should be done.
1665 ath_hal_settsfadjust(sc->sc_ah, sc->sc_stagbeacons);
1667 if (flags & IEEE80211_CLONE_NOBEACONS) {
1669 * Enable s/w beacon miss handling.
1675 /* complete setup */
1676 ieee80211_vap_attach(vap, ath_media_change, ieee80211_media_status,
1680 reclaim_address(sc, mac);
1681 ath_hal_setbssidmask(sc->sc_ah, sc->sc_hwbssidmask);
1683 free(avp, M_80211_VAP);
1689 ath_vap_delete(struct ieee80211vap *vap)
1691 struct ieee80211com *ic = vap->iv_ic;
1692 struct ath_softc *sc = ic->ic_softc;
1693 struct ath_hal *ah = sc->sc_ah;
1694 struct ath_vap *avp = ATH_VAP(vap);
1697 ath_power_set_power_state(sc, HAL_PM_AWAKE);
1700 DPRINTF(sc, ATH_DEBUG_RESET, "%s: called\n", __func__);
1701 if (sc->sc_running) {
1703 * Quiesce the hardware while we remove the vap. In
1704 * particular we need to reclaim all references to
1705 * the vap state by any frames pending on the tx queues.
1707 ath_hal_intrset(ah, 0); /* disable interrupts */
1708 /* XXX Do all frames from all vaps/nodes need draining here? */
1709 ath_stoprecv(sc, 1); /* stop recv side */
1710 ath_draintxq(sc, ATH_RESET_DEFAULT); /* stop hw xmit side */
1713 /* .. leave the hardware awake for now. */
1715 ieee80211_vap_detach(vap);
1718 * XXX Danger Will Robinson! Danger!
1720 * Because ieee80211_vap_detach() can queue a frame (the station
1721 * diassociate message?) after we've drained the TXQ and
1722 * flushed the software TXQ, we will end up with a frame queued
1723 * to a node whose vap is about to be freed.
1725 * To work around this, flush the hardware/software again.
1726 * This may be racy - the ath task may be running and the packet
1727 * may be being scheduled between sw->hw txq. Tsk.
1729 * TODO: figure out why a new node gets allocated somewhere around
1730 * here (after the ath_tx_swq() call; and after an ath_stop()
1734 ath_draintxq(sc, ATH_RESET_DEFAULT);
1738 * Reclaim beacon state. Note this must be done before
1739 * the vap instance is reclaimed as we may have a reference
1740 * to it in the buffer for the beacon frame.
1742 if (avp->av_bcbuf != NULL) {
1743 if (avp->av_bslot != -1) {
1744 sc->sc_bslot[avp->av_bslot] = NULL;
1747 ath_beacon_return(sc, avp->av_bcbuf);
1748 avp->av_bcbuf = NULL;
1749 if (sc->sc_nbcnvaps == 0) {
1750 sc->sc_stagbeacons = 0;
1751 if (sc->sc_hastsfadd)
1752 ath_hal_settsfadjust(sc->sc_ah, 0);
1755 * Reclaim any pending mcast frames for the vap.
1757 ath_tx_draintxq(sc, &avp->av_mcastq);
1760 * Update bookkeeping.
1762 if (vap->iv_opmode == IEEE80211_M_STA) {
1764 if (sc->sc_nstavaps == 0 && sc->sc_swbmiss)
1766 } else if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
1767 vap->iv_opmode == IEEE80211_M_MBSS) {
1768 reclaim_address(sc, vap->iv_myaddr);
1769 ath_hal_setbssidmask(ah, sc->sc_hwbssidmask);
1770 if (vap->iv_opmode == IEEE80211_M_MBSS)
1773 if (vap->iv_opmode != IEEE80211_M_WDS)
1775 #ifdef IEEE80211_SUPPORT_TDMA
1776 /* TDMA operation ceases when the last vap is destroyed */
1777 if (sc->sc_tdma && sc->sc_nvaps == 0) {
1782 free(avp, M_80211_VAP);
1784 if (sc->sc_running) {
1786 * Restart rx+tx machines if still running (RUNNING will
1787 * be reset if we just destroyed the last vap).
1789 if (ath_startrecv(sc) != 0)
1790 device_printf(sc->sc_dev,
1791 "%s: unable to restart recv logic\n", __func__);
1792 if (sc->sc_beacons) { /* restart beacons */
1793 #ifdef IEEE80211_SUPPORT_TDMA
1795 ath_tdma_config(sc, NULL);
1798 ath_beacon_config(sc, NULL);
1800 ath_hal_intrset(ah, sc->sc_imask);
1803 /* Ok, let the hardware asleep. */
1804 ath_power_restore_power_state(sc);
1809 ath_suspend(struct ath_softc *sc)
1811 struct ieee80211com *ic = &sc->sc_ic;
1813 sc->sc_resume_up = ic->ic_nrunning != 0;
1815 ieee80211_suspend_all(ic);
1817 * NB: don't worry about putting the chip in low power
1818 * mode; pci will power off our socket on suspend and
1819 * CardBus detaches the device.
1821 * XXX TODO: well, that's great, except for non-cardbus
1826 * XXX This doesn't wait until all pending taskqueue
1827 * items and parallel transmit/receive/other threads
1830 ath_hal_intrset(sc->sc_ah, 0);
1831 taskqueue_block(sc->sc_tq);
1834 callout_stop(&sc->sc_cal_ch);
1838 * XXX ensure sc_invalid is 1
1841 /* Disable the PCIe PHY, complete with workarounds */
1842 ath_hal_enablepcie(sc->sc_ah, 1, 1);
1846 * Reset the key cache since some parts do not reset the
1847 * contents on resume. First we clear all entries, then
1848 * re-load keys that the 802.11 layer assumes are setup
1852 ath_reset_keycache(struct ath_softc *sc)
1854 struct ieee80211com *ic = &sc->sc_ic;
1855 struct ath_hal *ah = sc->sc_ah;
1859 ath_power_set_power_state(sc, HAL_PM_AWAKE);
1860 for (i = 0; i < sc->sc_keymax; i++)
1861 ath_hal_keyreset(ah, i);
1862 ath_power_restore_power_state(sc);
1864 ieee80211_crypto_reload_keys(ic);
1868 * Fetch the current chainmask configuration based on the current
1869 * operating channel and options.
1872 ath_update_chainmasks(struct ath_softc *sc, struct ieee80211_channel *chan)
1876 * Set TX chainmask to the currently configured chainmask;
1877 * the TX chainmask depends upon the current operating mode.
1879 sc->sc_cur_rxchainmask = sc->sc_rxchainmask;
1880 if (IEEE80211_IS_CHAN_HT(chan)) {
1881 sc->sc_cur_txchainmask = sc->sc_txchainmask;
1883 sc->sc_cur_txchainmask = 1;
1886 DPRINTF(sc, ATH_DEBUG_RESET,
1887 "%s: TX chainmask is now 0x%x, RX is now 0x%x\n",
1889 sc->sc_cur_txchainmask,
1890 sc->sc_cur_rxchainmask);
1894 ath_resume(struct ath_softc *sc)
1896 struct ieee80211com *ic = &sc->sc_ic;
1897 struct ath_hal *ah = sc->sc_ah;
1900 ath_hal_enablepcie(ah, 0, 0);
1903 * Must reset the chip before we reload the
1904 * keycache as we were powered down on suspend.
1906 ath_update_chainmasks(sc,
1907 sc->sc_curchan != NULL ? sc->sc_curchan : ic->ic_curchan);
1908 ath_hal_setchainmasks(sc->sc_ah, sc->sc_cur_txchainmask,
1909 sc->sc_cur_rxchainmask);
1911 /* Ensure we set the current power state to on */
1913 ath_power_setselfgen(sc, HAL_PM_AWAKE);
1914 ath_power_set_power_state(sc, HAL_PM_AWAKE);
1915 ath_power_setpower(sc, HAL_PM_AWAKE);
1918 ath_hal_reset(ah, sc->sc_opmode,
1919 sc->sc_curchan != NULL ? sc->sc_curchan : ic->ic_curchan,
1921 ath_reset_keycache(sc);
1924 sc->sc_rx_stopped = 1;
1925 sc->sc_rx_resetted = 1;
1928 /* Let DFS at it in case it's a DFS channel */
1929 ath_dfs_radar_enable(sc, ic->ic_curchan);
1931 /* Let spectral at in case spectral is enabled */
1932 ath_spectral_enable(sc, ic->ic_curchan);
1935 * Let bluetooth coexistence at in case it's needed for this channel
1937 ath_btcoex_enable(sc, ic->ic_curchan);
1940 * If we're doing TDMA, enforce the TXOP limitation for chips that
1943 if (sc->sc_hasenforcetxop && sc->sc_tdma)
1944 ath_hal_setenforcetxop(sc->sc_ah, 1);
1946 ath_hal_setenforcetxop(sc->sc_ah, 0);
1948 /* Restore the LED configuration */
1950 ath_hal_setledstate(ah, HAL_LED_INIT);
1952 if (sc->sc_resume_up)
1953 ieee80211_resume_all(ic);
1956 ath_power_restore_power_state(sc);
1963 ath_shutdown(struct ath_softc *sc)
1969 /* NB: no point powering down chip as we're about to reboot */
1973 * Interrupt handler. Most of the actual processing is deferred.
1978 struct ath_softc *sc = arg;
1979 struct ath_hal *ah = sc->sc_ah;
1984 * If we're inside a reset path, just print a warning and
1985 * clear the ISR. The reset routine will finish it for us.
1988 if (sc->sc_inreset_cnt) {
1990 ath_hal_getisr(ah, &status); /* clear ISR */
1991 ath_hal_intrset(ah, 0); /* disable further intr's */
1992 DPRINTF(sc, ATH_DEBUG_ANY,
1993 "%s: in reset, ignoring: status=0x%x\n",
1999 if (sc->sc_invalid) {
2001 * The hardware is not ready/present, don't touch anything.
2002 * Note this can happen early on if the IRQ is shared.
2004 DPRINTF(sc, ATH_DEBUG_ANY, "%s: invalid; ignored\n", __func__);
2008 if (!ath_hal_intrpend(ah)) { /* shared irq, not for us */
2014 ath_power_set_power_state(sc, HAL_PM_AWAKE);
2017 if (sc->sc_ic.ic_nrunning == 0 && sc->sc_running == 0) {
2020 DPRINTF(sc, ATH_DEBUG_ANY, "%s: ic_nrunning %d sc_running %d\n",
2021 __func__, sc->sc_ic.ic_nrunning, sc->sc_running);
2022 ath_hal_getisr(ah, &status); /* clear ISR */
2023 ath_hal_intrset(ah, 0); /* disable further intr's */
2027 ath_power_restore_power_state(sc);
2033 * Figure out the reason(s) for the interrupt. Note
2034 * that the hal returns a pseudo-ISR that may include
2035 * bits we haven't explicitly enabled so we mask the
2036 * value to insure we only process bits we requested.
2038 ath_hal_getisr(ah, &status); /* NB: clears ISR too */
2039 DPRINTF(sc, ATH_DEBUG_INTR, "%s: status 0x%x\n", __func__, status);
2040 ATH_KTR(sc, ATH_KTR_INTERRUPTS, 1, "ath_intr: mask=0x%.8x", status);
2041 #ifdef ATH_DEBUG_ALQ
2042 if_ath_alq_post_intr(&sc->sc_alq, status, ah->ah_intrstate,
2044 #endif /* ATH_DEBUG_ALQ */
2045 #ifdef ATH_KTR_INTR_DEBUG
2046 ATH_KTR(sc, ATH_KTR_INTERRUPTS, 5,
2047 "ath_intr: ISR=0x%.8x, ISR_S0=0x%.8x, ISR_S1=0x%.8x, ISR_S2=0x%.8x, ISR_S5=0x%.8x",
2048 ah->ah_intrstate[0],
2049 ah->ah_intrstate[1],
2050 ah->ah_intrstate[2],
2051 ah->ah_intrstate[3],
2052 ah->ah_intrstate[6]);
2055 /* Squirrel away SYNC interrupt debugging */
2056 if (ah->ah_syncstate != 0) {
2058 for (i = 0; i < 32; i++)
2059 if (ah->ah_syncstate & (i << i))
2060 sc->sc_intr_stats.sync_intr[i]++;
2063 status &= sc->sc_imask; /* discard unasked for bits */
2065 /* Short-circuit un-handled interrupts */
2066 if (status == 0x0) {
2070 ath_power_restore_power_state(sc);
2077 * Take a note that we're inside the interrupt handler, so
2078 * the reset routines know to wait.
2084 * Handle the interrupt. We won't run concurrent with the reset
2085 * or channel change routines as they'll wait for sc_intr_cnt
2086 * to be 0 before continuing.
2088 if (status & HAL_INT_FATAL) {
2089 sc->sc_stats.ast_hardware++;
2090 ath_hal_intrset(ah, 0); /* disable intr's until reset */
2091 taskqueue_enqueue(sc->sc_tq, &sc->sc_fataltask);
2093 if (status & HAL_INT_SWBA) {
2095 * Software beacon alert--time to send a beacon.
2096 * Handle beacon transmission directly; deferring
2097 * this is too slow to meet timing constraints
2100 #ifdef IEEE80211_SUPPORT_TDMA
2102 if (sc->sc_tdmaswba == 0) {
2103 struct ieee80211com *ic = &sc->sc_ic;
2104 struct ieee80211vap *vap =
2105 TAILQ_FIRST(&ic->ic_vaps);
2106 ath_tdma_beacon_send(sc, vap);
2108 vap->iv_tdma->tdma_bintval;
2114 ath_beacon_proc(sc, 0);
2115 #ifdef IEEE80211_SUPPORT_SUPERG
2117 * Schedule the rx taskq in case there's no
2118 * traffic so any frames held on the staging
2119 * queue are aged and potentially flushed.
2121 sc->sc_rx.recv_sched(sc, 1);
2125 if (status & HAL_INT_RXEOL) {
2127 ATH_KTR(sc, ATH_KTR_ERROR, 0, "ath_intr: RXEOL");
2128 if (! sc->sc_isedma) {
2131 * NB: the hardware should re-read the link when
2132 * RXE bit is written, but it doesn't work at
2133 * least on older hardware revs.
2135 sc->sc_stats.ast_rxeol++;
2137 * Disable RXEOL/RXORN - prevent an interrupt
2138 * storm until the PCU logic can be reset.
2139 * In case the interface is reset some other
2140 * way before "sc_kickpcu" is called, don't
2141 * modify sc_imask - that way if it is reset
2142 * by a call to ath_reset() somehow, the
2143 * interrupt mask will be correctly reprogrammed.
2145 imask = sc->sc_imask;
2146 imask &= ~(HAL_INT_RXEOL | HAL_INT_RXORN);
2147 ath_hal_intrset(ah, imask);
2149 * Only blank sc_rxlink if we've not yet kicked
2152 * This isn't entirely correct - the correct solution
2153 * would be to have a PCU lock and engage that for
2154 * the duration of the PCU fiddling; which would include
2155 * running the RX process. Otherwise we could end up
2156 * messing up the RX descriptor chain and making the
2157 * RX desc list much shorter.
2159 if (! sc->sc_kickpcu)
2160 sc->sc_rxlink = NULL;
2165 * Enqueue an RX proc to handle whatever
2166 * is in the RX queue.
2167 * This will then kick the PCU if required.
2169 sc->sc_rx.recv_sched(sc, 1);
2171 if (status & HAL_INT_TXURN) {
2172 sc->sc_stats.ast_txurn++;
2173 /* bump tx trigger level */
2174 ath_hal_updatetxtriglevel(ah, AH_TRUE);
2177 * Handle both the legacy and RX EDMA interrupt bits.
2178 * Note that HAL_INT_RXLP is also HAL_INT_RXDESC.
2180 if (status & (HAL_INT_RX | HAL_INT_RXHP | HAL_INT_RXLP)) {
2181 sc->sc_stats.ast_rx_intr++;
2182 sc->sc_rx.recv_sched(sc, 1);
2184 if (status & HAL_INT_TX) {
2185 sc->sc_stats.ast_tx_intr++;
2187 * Grab all the currently set bits in the HAL txq bitmap
2188 * and blank them. This is the only place we should be
2191 if (! sc->sc_isedma) {
2194 ath_hal_gettxintrtxqs(sc->sc_ah, &txqs);
2195 ATH_KTR(sc, ATH_KTR_INTERRUPTS, 3,
2196 "ath_intr: TX; txqs=0x%08x, txq_active was 0x%08x, now 0x%08x",
2199 sc->sc_txq_active | txqs);
2200 sc->sc_txq_active |= txqs;
2203 taskqueue_enqueue(sc->sc_tq, &sc->sc_txtask);
2205 if (status & HAL_INT_BMISS) {
2206 sc->sc_stats.ast_bmiss++;
2207 taskqueue_enqueue(sc->sc_tq, &sc->sc_bmisstask);
2209 if (status & HAL_INT_GTT)
2210 sc->sc_stats.ast_tx_timeout++;
2211 if (status & HAL_INT_CST)
2212 sc->sc_stats.ast_tx_cst++;
2213 if (status & HAL_INT_MIB) {
2214 sc->sc_stats.ast_mib++;
2217 * Disable interrupts until we service the MIB
2218 * interrupt; otherwise it will continue to fire.
2220 ath_hal_intrset(ah, 0);
2222 * Let the hal handle the event. We assume it will
2223 * clear whatever condition caused the interrupt.
2225 ath_hal_mibevent(ah, &sc->sc_halstats);
2227 * Don't reset the interrupt if we've just
2228 * kicked the PCU, or we may get a nested
2229 * RXEOL before the rxproc has had a chance
2232 if (sc->sc_kickpcu == 0)
2233 ath_hal_intrset(ah, sc->sc_imask);
2236 if (status & HAL_INT_RXORN) {
2237 /* NB: hal marks HAL_INT_FATAL when RXORN is fatal */
2238 ATH_KTR(sc, ATH_KTR_ERROR, 0, "ath_intr: RXORN");
2239 sc->sc_stats.ast_rxorn++;
2241 if (status & HAL_INT_TSFOOR) {
2242 device_printf(sc->sc_dev, "%s: TSFOOR\n", __func__);
2243 sc->sc_syncbeacon = 1;
2251 ath_power_restore_power_state(sc);
2256 ath_fatal_proc(void *arg, int pending)
2258 struct ath_softc *sc = arg;
2266 device_printf(sc->sc_dev, "hardware error; resetting\n");
2268 * Fatal errors are unrecoverable. Typically these
2269 * are caused by DMA errors. Collect h/w state from
2270 * the hal so we can diagnose what's going on.
2272 if (ath_hal_getfatalstate(sc->sc_ah, &sp, &len)) {
2273 KASSERT(len >= 6*sizeof(u_int32_t), ("len %u bytes", len));
2275 device_printf(sc->sc_dev,
2276 "0x%08x 0x%08x 0x%08x, 0x%08x 0x%08x 0x%08x\n", state[0],
2277 state[1] , state[2], state[3], state[4], state[5]);
2279 ath_reset(sc, ATH_RESET_NOLOSS);
2283 ath_bmiss_vap(struct ieee80211vap *vap)
2285 struct ath_softc *sc = vap->iv_ic->ic_softc;
2288 * Workaround phantom bmiss interrupts by sanity-checking
2289 * the time of our last rx'd frame. If it is within the
2290 * beacon miss interval then ignore the interrupt. If it's
2291 * truly a bmiss we'll get another interrupt soon and that'll
2292 * be dispatched up for processing. Note this applies only
2293 * for h/w beacon miss events.
2297 * XXX TODO: Just read the TSF during the interrupt path;
2298 * that way we don't have to wake up again just to read it
2302 ath_power_set_power_state(sc, HAL_PM_AWAKE);
2305 if ((vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS) == 0) {
2306 u_int64_t lastrx = sc->sc_lastrx;
2307 u_int64_t tsf = ath_hal_gettsf64(sc->sc_ah);
2308 /* XXX should take a locked ref to iv_bss */
2309 u_int bmisstimeout =
2310 vap->iv_bmissthreshold * vap->iv_bss->ni_intval * 1024;
2312 DPRINTF(sc, ATH_DEBUG_BEACON,
2313 "%s: tsf %llu lastrx %lld (%llu) bmiss %u\n",
2314 __func__, (unsigned long long) tsf,
2315 (unsigned long long)(tsf - lastrx),
2316 (unsigned long long) lastrx, bmisstimeout);
2318 if (tsf - lastrx <= bmisstimeout) {
2319 sc->sc_stats.ast_bmiss_phantom++;
2322 ath_power_restore_power_state(sc);
2330 * There's no need to keep the hardware awake during the call
2334 ath_power_restore_power_state(sc);
2338 * Attempt to force a beacon resync.
2340 sc->sc_syncbeacon = 1;
2342 ATH_VAP(vap)->av_bmiss(vap);
2345 /* XXX this needs a force wakeup! */
2347 ath_hal_gethangstate(struct ath_hal *ah, uint32_t mask, uint32_t *hangs)
2352 if (!ath_hal_getdiagstate(ah, HAL_DIAG_CHECK_HANGS, &mask, sizeof(mask), &sp, &rsize))
2354 KASSERT(rsize == sizeof(uint32_t), ("resultsize %u", rsize));
2355 *hangs = *(uint32_t *)sp;
2360 ath_bmiss_proc(void *arg, int pending)
2362 struct ath_softc *sc = arg;
2365 DPRINTF(sc, ATH_DEBUG_ANY, "%s: pending %u\n", __func__, pending);
2368 ath_power_set_power_state(sc, HAL_PM_AWAKE);
2371 ath_beacon_miss(sc);
2374 * Do a reset upon any becaon miss event.
2376 * It may be a non-recognised RX clear hang which needs a reset
2379 if (ath_hal_gethangstate(sc->sc_ah, 0xff, &hangs) && hangs != 0) {
2380 ath_reset(sc, ATH_RESET_NOLOSS);
2381 device_printf(sc->sc_dev,
2382 "bb hang detected (0x%x), resetting\n", hangs);
2384 ath_reset(sc, ATH_RESET_NOLOSS);
2385 ieee80211_beacon_miss(&sc->sc_ic);
2388 /* Force a beacon resync, in case they've drifted */
2389 sc->sc_syncbeacon = 1;
2392 ath_power_restore_power_state(sc);
2397 * Handle TKIP MIC setup to deal hardware that doesn't do MIC
2398 * calcs together with WME. If necessary disable the crypto
2399 * hardware and mark the 802.11 state so keys will be setup
2400 * with the MIC work done in software.
2403 ath_settkipmic(struct ath_softc *sc)
2405 struct ieee80211com *ic = &sc->sc_ic;
2407 if ((ic->ic_cryptocaps & IEEE80211_CRYPTO_TKIP) && !sc->sc_wmetkipmic) {
2408 if (ic->ic_flags & IEEE80211_F_WME) {
2409 ath_hal_settkipmic(sc->sc_ah, AH_FALSE);
2410 ic->ic_cryptocaps &= ~IEEE80211_CRYPTO_TKIPMIC;
2412 ath_hal_settkipmic(sc->sc_ah, AH_TRUE);
2413 ic->ic_cryptocaps |= IEEE80211_CRYPTO_TKIPMIC;
2419 ath_init(struct ath_softc *sc)
2421 struct ieee80211com *ic = &sc->sc_ic;
2422 struct ath_hal *ah = sc->sc_ah;
2425 ATH_LOCK_ASSERT(sc);
2428 * Force the sleep state awake.
2430 ath_power_setselfgen(sc, HAL_PM_AWAKE);
2431 ath_power_set_power_state(sc, HAL_PM_AWAKE);
2432 ath_power_setpower(sc, HAL_PM_AWAKE);
2435 * Stop anything previously setup. This is safe
2436 * whether this is the first time through or not.
2441 * The basic interface to setting the hardware in a good
2442 * state is ``reset''. On return the hardware is known to
2443 * be powered up and with interrupts disabled. This must
2444 * be followed by initialization of the appropriate bits
2445 * and then setup of the interrupt mask.
2448 ath_update_chainmasks(sc, ic->ic_curchan);
2449 ath_hal_setchainmasks(sc->sc_ah, sc->sc_cur_txchainmask,
2450 sc->sc_cur_rxchainmask);
2452 if (!ath_hal_reset(ah, sc->sc_opmode, ic->ic_curchan, AH_FALSE,
2454 device_printf(sc->sc_dev,
2455 "unable to reset hardware; hal status %u\n", status);
2460 sc->sc_rx_stopped = 1;
2461 sc->sc_rx_resetted = 1;
2464 ath_chan_change(sc, ic->ic_curchan);
2466 /* Let DFS at it in case it's a DFS channel */
2467 ath_dfs_radar_enable(sc, ic->ic_curchan);
2469 /* Let spectral at in case spectral is enabled */
2470 ath_spectral_enable(sc, ic->ic_curchan);
2473 * Let bluetooth coexistence at in case it's needed for this channel
2475 ath_btcoex_enable(sc, ic->ic_curchan);
2478 * If we're doing TDMA, enforce the TXOP limitation for chips that
2481 if (sc->sc_hasenforcetxop && sc->sc_tdma)
2482 ath_hal_setenforcetxop(sc->sc_ah, 1);
2484 ath_hal_setenforcetxop(sc->sc_ah, 0);
2487 * Likewise this is set during reset so update
2488 * state cached in the driver.
2490 sc->sc_diversity = ath_hal_getdiversity(ah);
2491 sc->sc_lastlongcal = ticks;
2492 sc->sc_resetcal = 1;
2493 sc->sc_lastcalreset = 0;
2494 sc->sc_lastani = ticks;
2495 sc->sc_lastshortcal = ticks;
2496 sc->sc_doresetcal = AH_FALSE;
2498 * Beacon timers were cleared here; give ath_newstate()
2499 * a hint that the beacon timers should be poked when
2500 * things transition to the RUN state.
2505 * Setup the hardware after reset: the key cache
2506 * is filled as needed and the receive engine is
2507 * set going. Frame transmit is handled entirely
2508 * in the frame output path; there's nothing to do
2509 * here except setup the interrupt mask.
2511 if (ath_startrecv(sc) != 0) {
2512 device_printf(sc->sc_dev, "unable to start recv logic\n");
2513 ath_power_restore_power_state(sc);
2518 * Enable interrupts.
2520 sc->sc_imask = HAL_INT_RX | HAL_INT_TX
2521 | HAL_INT_RXORN | HAL_INT_TXURN
2522 | HAL_INT_FATAL | HAL_INT_GLOBAL;
2525 * Enable RX EDMA bits. Note these overlap with
2526 * HAL_INT_RX and HAL_INT_RXDESC respectively.
2529 sc->sc_imask |= (HAL_INT_RXHP | HAL_INT_RXLP);
2532 * If we're an EDMA NIC, we don't care about RXEOL.
2533 * Writing a new descriptor in will simply restart
2536 if (! sc->sc_isedma)
2537 sc->sc_imask |= HAL_INT_RXEOL;
2540 * Enable MIB interrupts when there are hardware phy counters.
2541 * Note we only do this (at the moment) for station mode.
2543 if (sc->sc_needmib && ic->ic_opmode == IEEE80211_M_STA)
2544 sc->sc_imask |= HAL_INT_MIB;
2547 * XXX add capability for this.
2549 * If we're in STA mode (and maybe IBSS?) then register for
2550 * TSFOOR interrupts.
2552 if (ic->ic_opmode == IEEE80211_M_STA)
2553 sc->sc_imask |= HAL_INT_TSFOOR;
2555 /* Enable global TX timeout and carrier sense timeout if available */
2556 if (ath_hal_gtxto_supported(ah))
2557 sc->sc_imask |= HAL_INT_GTT;
2559 DPRINTF(sc, ATH_DEBUG_RESET, "%s: imask=0x%x\n",
2560 __func__, sc->sc_imask);
2563 callout_reset(&sc->sc_wd_ch, hz, ath_watchdog, sc);
2564 ath_hal_intrset(ah, sc->sc_imask);
2566 ath_power_restore_power_state(sc);
2572 ath_stop(struct ath_softc *sc)
2574 struct ath_hal *ah = sc->sc_ah;
2576 ATH_LOCK_ASSERT(sc);
2579 * Wake the hardware up before fiddling with it.
2581 ath_power_set_power_state(sc, HAL_PM_AWAKE);
2583 if (sc->sc_running) {
2585 * Shutdown the hardware and driver:
2586 * reset 802.11 state machine
2588 * disable interrupts
2589 * turn off the radio
2590 * clear transmit machinery
2591 * clear receive machinery
2592 * drain and release tx queues
2593 * reclaim beacon resources
2594 * power down hardware
2596 * Note that some of this work is not possible if the
2597 * hardware is gone (invalid).
2599 #ifdef ATH_TX99_DIAG
2600 if (sc->sc_tx99 != NULL)
2601 sc->sc_tx99->stop(sc->sc_tx99);
2603 callout_stop(&sc->sc_wd_ch);
2604 sc->sc_wd_timer = 0;
2606 if (!sc->sc_invalid) {
2607 if (sc->sc_softled) {
2608 callout_stop(&sc->sc_ledtimer);
2609 ath_hal_gpioset(ah, sc->sc_ledpin,
2611 sc->sc_blinking = 0;
2613 ath_hal_intrset(ah, 0);
2615 /* XXX we should stop RX regardless of whether it's valid */
2616 if (!sc->sc_invalid) {
2617 ath_stoprecv(sc, 1);
2618 ath_hal_phydisable(ah);
2620 sc->sc_rxlink = NULL;
2621 ath_draintxq(sc, ATH_RESET_DEFAULT);
2622 ath_beacon_free(sc); /* XXX not needed */
2625 /* And now, restore the current power state */
2626 ath_power_restore_power_state(sc);
2630 * Wait until all pending TX/RX has completed.
2632 * This waits until all existing transmit, receive and interrupts
2633 * have completed. It's assumed that the caller has first
2634 * grabbed the reset lock so it doesn't try to do overlapping
2637 #define MAX_TXRX_ITERATIONS 100
2639 ath_txrx_stop_locked(struct ath_softc *sc)
2641 int i = MAX_TXRX_ITERATIONS;
2643 ATH_UNLOCK_ASSERT(sc);
2644 ATH_PCU_LOCK_ASSERT(sc);
2647 * Sleep until all the pending operations have completed.
2649 * The caller must ensure that reset has been incremented
2650 * or the pending operations may continue being queued.
2652 while (sc->sc_rxproc_cnt || sc->sc_txproc_cnt ||
2653 sc->sc_txstart_cnt || sc->sc_intr_cnt) {
2656 msleep(sc, &sc->sc_pcu_mtx, 0, "ath_txrx_stop",
2657 msecs_to_ticks(10));
2662 device_printf(sc->sc_dev,
2663 "%s: didn't finish after %d iterations\n",
2664 __func__, MAX_TXRX_ITERATIONS);
2666 #undef MAX_TXRX_ITERATIONS
2670 ath_txrx_stop(struct ath_softc *sc)
2672 ATH_UNLOCK_ASSERT(sc);
2673 ATH_PCU_UNLOCK_ASSERT(sc);
2676 ath_txrx_stop_locked(sc);
2682 ath_txrx_start(struct ath_softc *sc)
2685 taskqueue_unblock(sc->sc_tq);
2689 * Grab the reset lock, and wait around until noone else
2690 * is trying to do anything with it.
2692 * This is totally horrible but we can't hold this lock for
2693 * long enough to do TX/RX or we end up with net80211/ip stack
2694 * LORs and eventual deadlock.
2696 * "dowait" signals whether to spin, waiting for the reset
2697 * lock count to reach 0. This should (for now) only be used
2698 * during the reset path, as the rest of the code may not
2699 * be locking-reentrant enough to behave correctly.
2701 * Another, cleaner way should be found to serialise all of
2704 #define MAX_RESET_ITERATIONS 25
2706 ath_reset_grablock(struct ath_softc *sc, int dowait)
2709 int i = MAX_RESET_ITERATIONS;
2711 ATH_PCU_LOCK_ASSERT(sc);
2713 if (sc->sc_inreset_cnt == 0) {
2723 * 1 tick is likely not enough time for long calibrations
2724 * to complete. So we should wait quite a while.
2726 pause("ath_reset_grablock", msecs_to_ticks(100));
2732 * We always increment the refcounter, regardless
2733 * of whether we succeeded to get it in an exclusive
2736 sc->sc_inreset_cnt++;
2739 device_printf(sc->sc_dev,
2740 "%s: didn't finish after %d iterations\n",
2741 __func__, MAX_RESET_ITERATIONS);
2744 device_printf(sc->sc_dev,
2745 "%s: warning, recursive reset path!\n",
2750 #undef MAX_RESET_ITERATIONS
2753 * Reset the hardware w/o losing operational state. This is
2754 * basically a more efficient way of doing ath_stop, ath_init,
2755 * followed by state transitions to the current 802.11
2756 * operational state. Used to recover from various errors and
2757 * to reset or reload hardware state.
2760 ath_reset(struct ath_softc *sc, ATH_RESET_TYPE reset_type)
2762 struct ieee80211com *ic = &sc->sc_ic;
2763 struct ath_hal *ah = sc->sc_ah;
2767 DPRINTF(sc, ATH_DEBUG_RESET, "%s: called\n", __func__);
2769 /* Ensure ATH_LOCK isn't held; ath_rx_proc can't be locked */
2770 ATH_PCU_UNLOCK_ASSERT(sc);
2771 ATH_UNLOCK_ASSERT(sc);
2773 /* Try to (stop any further TX/RX from occuring */
2774 taskqueue_block(sc->sc_tq);
2777 * Wake the hardware up.
2780 ath_power_set_power_state(sc, HAL_PM_AWAKE);
2786 * Grab the reset lock before TX/RX is stopped.
2788 * This is needed to ensure that when the TX/RX actually does finish,
2789 * no further TX/RX/reset runs in parallel with this.
2791 if (ath_reset_grablock(sc, 1) == 0) {
2792 device_printf(sc->sc_dev, "%s: concurrent reset! Danger!\n",
2796 /* disable interrupts */
2797 ath_hal_intrset(ah, 0);
2800 * Now, ensure that any in progress TX/RX completes before we
2803 ath_txrx_stop_locked(sc);
2808 * Regardless of whether we're doing a no-loss flush or
2809 * not, stop the PCU and handle what's in the RX queue.
2810 * That way frames aren't dropped which shouldn't be.
2812 ath_stoprecv(sc, (reset_type != ATH_RESET_NOLOSS));
2816 * Should now wait for pending TX/RX to complete
2817 * and block future ones from occuring. This needs to be
2818 * done before the TX queue is drained.
2820 ath_draintxq(sc, reset_type); /* stop xmit side */
2822 ath_settkipmic(sc); /* configure TKIP MIC handling */
2823 /* NB: indicate channel change so we do a full reset */
2824 ath_update_chainmasks(sc, ic->ic_curchan);
2825 ath_hal_setchainmasks(sc->sc_ah, sc->sc_cur_txchainmask,
2826 sc->sc_cur_rxchainmask);
2827 if (!ath_hal_reset(ah, sc->sc_opmode, ic->ic_curchan, AH_TRUE, &status))
2828 device_printf(sc->sc_dev,
2829 "%s: unable to reset hardware; hal status %u\n",
2831 sc->sc_diversity = ath_hal_getdiversity(ah);
2834 sc->sc_rx_stopped = 1;
2835 sc->sc_rx_resetted = 1;
2838 /* Let DFS at it in case it's a DFS channel */
2839 ath_dfs_radar_enable(sc, ic->ic_curchan);
2841 /* Let spectral at in case spectral is enabled */
2842 ath_spectral_enable(sc, ic->ic_curchan);
2845 * Let bluetooth coexistence at in case it's needed for this channel
2847 ath_btcoex_enable(sc, ic->ic_curchan);
2850 * If we're doing TDMA, enforce the TXOP limitation for chips that
2853 if (sc->sc_hasenforcetxop && sc->sc_tdma)
2854 ath_hal_setenforcetxop(sc->sc_ah, 1);
2856 ath_hal_setenforcetxop(sc->sc_ah, 0);
2858 if (ath_startrecv(sc) != 0) /* restart recv */
2859 device_printf(sc->sc_dev,
2860 "%s: unable to start recv logic\n", __func__);
2862 * We may be doing a reset in response to an ioctl
2863 * that changes the channel so update any state that
2864 * might change as a result.
2866 ath_chan_change(sc, ic->ic_curchan);
2867 if (sc->sc_beacons) { /* restart beacons */
2868 #ifdef IEEE80211_SUPPORT_TDMA
2870 ath_tdma_config(sc, NULL);
2873 ath_beacon_config(sc, NULL);
2877 * Release the reset lock and re-enable interrupts here.
2878 * If an interrupt was being processed in ath_intr(),
2879 * it would disable interrupts at this point. So we have
2880 * to atomically enable interrupts and decrement the
2881 * reset counter - this way ath_intr() doesn't end up
2882 * disabling interrupts without a corresponding enable
2883 * in the rest or channel change path.
2885 * Grab the TX reference in case we need to transmit.
2886 * That way a parallel transmit doesn't.
2889 sc->sc_inreset_cnt--;
2890 sc->sc_txstart_cnt++;
2891 /* XXX only do this if sc_inreset_cnt == 0? */
2892 ath_hal_intrset(ah, sc->sc_imask);
2896 * TX and RX can be started here. If it were started with
2897 * sc_inreset_cnt > 0, the TX and RX path would abort.
2898 * Thus if this is a nested call through the reset or
2899 * channel change code, TX completion will occur but
2900 * RX completion and ath_start / ath_tx_start will not
2904 /* Restart TX/RX as needed */
2907 /* XXX TODO: we need to hold the tx refcount here! */
2909 /* Restart TX completion and pending TX */
2910 if (reset_type == ATH_RESET_NOLOSS) {
2911 for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
2912 if (ATH_TXQ_SETUP(sc, i)) {
2913 ATH_TXQ_LOCK(&sc->sc_txq[i]);
2914 ath_txq_restart_dma(sc, &sc->sc_txq[i]);
2915 ATH_TXQ_UNLOCK(&sc->sc_txq[i]);
2918 ath_txq_sched(sc, &sc->sc_txq[i]);
2925 ath_power_restore_power_state(sc);
2929 sc->sc_txstart_cnt--;
2932 /* Handle any frames in the TX queue */
2934 * XXX should this be done by the caller, rather than
2937 ath_tx_kick(sc); /* restart xmit */
2942 ath_reset_vap(struct ieee80211vap *vap, u_long cmd)
2944 struct ieee80211com *ic = vap->iv_ic;
2945 struct ath_softc *sc = ic->ic_softc;
2946 struct ath_hal *ah = sc->sc_ah;
2949 case IEEE80211_IOC_TXPOWER:
2951 * If per-packet TPC is enabled, then we have nothing
2952 * to do; otherwise we need to force the global limit.
2953 * All this can happen directly; no need to reset.
2955 if (!ath_hal_gettpc(ah))
2956 ath_hal_settxpowlimit(ah, ic->ic_txpowlimit);
2959 /* XXX? Full or NOLOSS? */
2960 return ath_reset(sc, ATH_RESET_FULL);
2964 _ath_getbuf_locked(struct ath_softc *sc, ath_buf_type_t btype)
2968 ATH_TXBUF_LOCK_ASSERT(sc);
2970 if (btype == ATH_BUFTYPE_MGMT)
2971 bf = TAILQ_FIRST(&sc->sc_txbuf_mgmt);
2973 bf = TAILQ_FIRST(&sc->sc_txbuf);
2976 sc->sc_stats.ast_tx_getnobuf++;
2978 if (bf->bf_flags & ATH_BUF_BUSY) {
2979 sc->sc_stats.ast_tx_getbusybuf++;
2984 if (bf != NULL && (bf->bf_flags & ATH_BUF_BUSY) == 0) {
2985 if (btype == ATH_BUFTYPE_MGMT)
2986 TAILQ_REMOVE(&sc->sc_txbuf_mgmt, bf, bf_list);
2988 TAILQ_REMOVE(&sc->sc_txbuf, bf, bf_list);
2992 * This shuldn't happen; however just to be
2993 * safe print a warning and fudge the txbuf
2996 if (sc->sc_txbuf_cnt < 0) {
2997 device_printf(sc->sc_dev,
2998 "%s: sc_txbuf_cnt < 0?\n",
3000 sc->sc_txbuf_cnt = 0;
3007 /* XXX should check which list, mgmt or otherwise */
3008 DPRINTF(sc, ATH_DEBUG_XMIT, "%s: %s\n", __func__,
3009 TAILQ_FIRST(&sc->sc_txbuf) == NULL ?
3010 "out of xmit buffers" : "xmit buffer busy");
3014 /* XXX TODO: should do this at buffer list initialisation */
3015 /* XXX (then, ensure the buffer has the right flag set) */
3017 if (btype == ATH_BUFTYPE_MGMT)
3018 bf->bf_flags |= ATH_BUF_MGMT;
3020 bf->bf_flags &= (~ATH_BUF_MGMT);
3022 /* Valid bf here; clear some basic fields */
3023 bf->bf_next = NULL; /* XXX just to be sure */
3024 bf->bf_last = NULL; /* XXX again, just to be sure */
3025 bf->bf_comp = NULL; /* XXX again, just to be sure */
3026 bzero(&bf->bf_state, sizeof(bf->bf_state));
3029 * Track the descriptor ID only if doing EDMA
3031 if (sc->sc_isedma) {
3032 bf->bf_descid = sc->sc_txbuf_descid;
3033 sc->sc_txbuf_descid++;
3040 * When retrying a software frame, buffers marked ATH_BUF_BUSY
3041 * can't be thrown back on the queue as they could still be
3042 * in use by the hardware.
3044 * This duplicates the buffer, or returns NULL.
3046 * The descriptor is also copied but the link pointers and
3047 * the DMA segments aren't copied; this frame should thus
3048 * be again passed through the descriptor setup/chain routines
3049 * so the link is correct.
3051 * The caller must free the buffer using ath_freebuf().
3054 ath_buf_clone(struct ath_softc *sc, struct ath_buf *bf)
3056 struct ath_buf *tbf;
3058 tbf = ath_getbuf(sc,
3059 (bf->bf_flags & ATH_BUF_MGMT) ?
3060 ATH_BUFTYPE_MGMT : ATH_BUFTYPE_NORMAL);
3062 return NULL; /* XXX failure? Why? */
3065 tbf->bf_next = NULL;
3066 tbf->bf_nseg = bf->bf_nseg;
3067 tbf->bf_flags = bf->bf_flags & ATH_BUF_FLAGS_CLONE;
3068 tbf->bf_status = bf->bf_status;
3069 tbf->bf_m = bf->bf_m;
3070 tbf->bf_node = bf->bf_node;
3071 KASSERT((bf->bf_node != NULL), ("%s: bf_node=NULL!", __func__));
3072 /* will be setup by the chain/setup function */
3073 tbf->bf_lastds = NULL;
3074 /* for now, last == self */
3076 tbf->bf_comp = bf->bf_comp;
3078 /* NOTE: DMA segments will be setup by the setup/chain functions */
3080 /* The caller has to re-init the descriptor + links */
3083 * Free the DMA mapping here, before we NULL the mbuf.
3084 * We must only call bus_dmamap_unload() once per mbuf chain
3085 * or behaviour is undefined.
3087 if (bf->bf_m != NULL) {
3089 * XXX is this POSTWRITE call required?
3091 bus_dmamap_sync(sc->sc_dmat, bf->bf_dmamap,
3092 BUS_DMASYNC_POSTWRITE);
3093 bus_dmamap_unload(sc->sc_dmat, bf->bf_dmamap);
3100 memcpy(&tbf->bf_state, &bf->bf_state, sizeof(bf->bf_state));
3106 ath_getbuf(struct ath_softc *sc, ath_buf_type_t btype)
3111 bf = _ath_getbuf_locked(sc, btype);
3113 * If a mgmt buffer was requested but we're out of those,
3114 * try requesting a normal one.
3116 if (bf == NULL && btype == ATH_BUFTYPE_MGMT)
3117 bf = _ath_getbuf_locked(sc, ATH_BUFTYPE_NORMAL);
3118 ATH_TXBUF_UNLOCK(sc);
3120 DPRINTF(sc, ATH_DEBUG_XMIT, "%s: stop queue\n", __func__);
3121 sc->sc_stats.ast_tx_qstop++;
3127 * Transmit a single frame.
3129 * net80211 will free the node reference if the transmit
3130 * fails, so don't free the node reference here.
3133 ath_transmit(struct ieee80211com *ic, struct mbuf *m)
3135 struct ath_softc *sc = ic->ic_softc;
3136 struct ieee80211_node *ni;
3143 * Tell the reset path that we're currently transmitting.
3146 if (sc->sc_inreset_cnt > 0) {
3147 DPRINTF(sc, ATH_DEBUG_XMIT,
3148 "%s: sc_inreset_cnt > 0; bailing\n", __func__);
3150 sc->sc_stats.ast_tx_qstop++;
3151 ATH_KTR(sc, ATH_KTR_TX, 0, "ath_start_task: OACTIVE, finish");
3152 return (ENOBUFS); /* XXX should be EINVAL or? */
3154 sc->sc_txstart_cnt++;
3157 /* Wake the hardware up already */
3159 ath_power_set_power_state(sc, HAL_PM_AWAKE);
3162 ATH_KTR(sc, ATH_KTR_TX, 0, "ath_transmit: start");
3164 * Grab the TX lock - it's ok to do this here; we haven't
3165 * yet started transmitting.
3170 * Node reference, if there's one.
3172 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
3175 * Enforce how deep a node queue can get.
3177 * XXX it would be nicer if we kept an mbuf queue per
3178 * node and only whacked them into ath_bufs when we
3179 * are ready to schedule some traffic from them.
3180 * .. that may come later.
3182 * XXX we should also track the per-node hardware queue
3183 * depth so it is easy to limit the _SUM_ of the swq and
3184 * hwq frames. Since we only schedule two HWQ frames
3185 * at a time, this should be OK for now.
3187 if ((!(m->m_flags & M_EAPOL)) &&
3188 (ATH_NODE(ni)->an_swq_depth > sc->sc_txq_node_maxdepth)) {
3189 sc->sc_stats.ast_tx_nodeq_overflow++;
3195 * Check how many TX buffers are available.
3197 * If this is for non-EAPOL traffic, just leave some
3198 * space free in order for buffer cloning and raw
3199 * frame transmission to occur.
3201 * If it's for EAPOL traffic, ignore this for now.
3202 * Management traffic will be sent via the raw transmit
3203 * method which bypasses this check.
3205 * This is needed to ensure that EAPOL frames during
3206 * (re) keying have a chance to go out.
3208 * See kern/138379 for more information.
3210 if ((!(m->m_flags & M_EAPOL)) &&
3211 (sc->sc_txbuf_cnt <= sc->sc_txq_data_minfree)) {
3212 sc->sc_stats.ast_tx_nobuf++;
3218 * Grab a TX buffer and associated resources.
3220 * If it's an EAPOL frame, allocate a MGMT ath_buf.
3221 * That way even with temporary buffer exhaustion due to
3222 * the data path doesn't leave us without the ability
3223 * to transmit management frames.
3225 * Otherwise allocate a normal buffer.
3227 if (m->m_flags & M_EAPOL)
3228 bf = ath_getbuf(sc, ATH_BUFTYPE_MGMT);
3230 bf = ath_getbuf(sc, ATH_BUFTYPE_NORMAL);
3234 * If we failed to allocate a buffer, fail.
3236 * We shouldn't fail normally, due to the check
3239 sc->sc_stats.ast_tx_nobuf++;
3245 * At this point we have a buffer; so we need to free it
3246 * if we hit any error conditions.
3250 * Check for fragmentation. If this frame
3251 * has been broken up verify we have enough
3252 * buffers to send all the fragments so all
3256 if ((m->m_flags & M_FRAG) &&
3257 !ath_txfrag_setup(sc, &frags, m, ni)) {
3258 DPRINTF(sc, ATH_DEBUG_XMIT,
3259 "%s: out of txfrag buffers\n", __func__);
3260 sc->sc_stats.ast_tx_nofrag++;
3261 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1);
3263 * XXXGL: is mbuf valid after ath_txfrag_setup? If yes,
3264 * we shouldn't free it but return back.
3272 * At this point if we have any TX fragments, then we will
3273 * have bumped the node reference once for each of those.
3277 * XXX Is there anything actually _enforcing_ that the
3278 * fragments are being transmitted in one hit, rather than
3279 * being interleaved with other transmissions on that
3282 * The ATH TX output lock is the only thing serialising this
3287 * Calculate the "next fragment" length field in ath_buf
3288 * in order to let the transmit path know enough about
3289 * what to next write to the hardware.
3291 if (m->m_flags & M_FRAG) {
3292 struct ath_buf *fbf = bf;
3293 struct ath_buf *n_fbf = NULL;
3294 struct mbuf *fm = m->m_nextpkt;
3297 * We need to walk the list of fragments and set
3298 * the next size to the following buffer.
3299 * However, the first buffer isn't in the frag
3300 * list, so we have to do some gymnastics here.
3302 TAILQ_FOREACH(n_fbf, &frags, bf_list) {
3303 fbf->bf_nextfraglen = fm->m_pkthdr.len;
3311 * Pass the frame to the h/w for transmission.
3312 * Fragmented frames have each frag chained together
3313 * with m_nextpkt. We know there are sufficient ath_buf's
3314 * to send all the frags because of work done by
3315 * ath_txfrag_setup. We leave m_nextpkt set while
3316 * calling ath_tx_start so it can use it to extend the
3317 * the tx duration to cover the subsequent frag and
3318 * so it can reclaim all the mbufs in case of an error;
3319 * ath_tx_start clears m_nextpkt once it commits to
3320 * handing the frame to the hardware.
3322 * Note: if this fails, then the mbufs are freed but
3323 * not the node reference.
3325 next = m->m_nextpkt;
3326 if (ath_tx_start(sc, ni, bf, m)) {
3328 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1);
3333 ath_returnbuf_head(sc, bf);
3335 * Free the rest of the node references and
3336 * buffers for the fragment list.
3338 ath_txfrag_cleanup(sc, &frags, ni);
3339 ATH_TXBUF_UNLOCK(sc);
3345 * Check here if the node is in power save state.
3347 ath_tx_update_tim(sc, ni, 1);
3351 * Beware of state changing between frags.
3352 * XXX check sta power-save state?
3354 if (ni->ni_vap->iv_state != IEEE80211_S_RUN) {
3355 DPRINTF(sc, ATH_DEBUG_XMIT,
3356 "%s: flush fragmented packet, state %s\n",
3358 ieee80211_state_name[ni->ni_vap->iv_state]);
3364 bf = TAILQ_FIRST(&frags);
3365 KASSERT(bf != NULL, ("no buf for txfrag"));
3366 TAILQ_REMOVE(&frags, bf, bf_list);
3371 * Bump watchdog timer.
3373 sc->sc_wd_timer = 5;
3379 * Finished transmitting!
3382 sc->sc_txstart_cnt--;
3385 /* Sleep the hardware if required */
3387 ath_power_restore_power_state(sc);
3390 ATH_KTR(sc, ATH_KTR_TX, 0, "ath_transmit: finished");
3396 ath_media_change(struct ifnet *ifp)
3398 int error = ieee80211_media_change(ifp);
3399 /* NB: only the fixed rate can change and that doesn't need a reset */
3400 return (error == ENETRESET ? 0 : error);
3404 * Block/unblock tx+rx processing while a key change is done.
3405 * We assume the caller serializes key management operations
3406 * so we only need to worry about synchronization with other
3407 * uses that originate in the driver.
3410 ath_key_update_begin(struct ieee80211vap *vap)
3412 struct ath_softc *sc = vap->iv_ic->ic_softc;
3414 DPRINTF(sc, ATH_DEBUG_KEYCACHE, "%s:\n", __func__);
3415 taskqueue_block(sc->sc_tq);
3419 ath_key_update_end(struct ieee80211vap *vap)
3421 struct ath_softc *sc = vap->iv_ic->ic_softc;
3423 DPRINTF(sc, ATH_DEBUG_KEYCACHE, "%s:\n", __func__);
3424 taskqueue_unblock(sc->sc_tq);
3428 ath_update_promisc(struct ieee80211com *ic)
3430 struct ath_softc *sc = ic->ic_softc;
3433 /* configure rx filter */
3435 ath_power_set_power_state(sc, HAL_PM_AWAKE);
3436 rfilt = ath_calcrxfilter(sc);
3437 ath_hal_setrxfilter(sc->sc_ah, rfilt);
3438 ath_power_restore_power_state(sc);
3441 DPRINTF(sc, ATH_DEBUG_MODE, "%s: RX filter 0x%x\n", __func__, rfilt);
3445 * Driver-internal mcast update call.
3447 * Assumes the hardware is already awake.
3450 ath_update_mcast_hw(struct ath_softc *sc)
3452 struct ieee80211com *ic = &sc->sc_ic;
3455 /* calculate and install multicast filter */
3456 if (ic->ic_allmulti == 0) {
3457 struct ieee80211vap *vap;
3459 struct ifmultiaddr *ifma;
3462 * Merge multicast addresses to form the hardware filter.
3464 mfilt[0] = mfilt[1] = 0;
3465 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
3467 if_maddr_rlock(ifp);
3468 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
3473 /* calculate XOR of eight 6bit values */
3474 dl = LLADDR((struct sockaddr_dl *)
3476 val = LE_READ_4(dl + 0);
3477 pos = (val >> 18) ^ (val >> 12) ^ (val >> 6) ^
3479 val = LE_READ_4(dl + 3);
3480 pos ^= (val >> 18) ^ (val >> 12) ^ (val >> 6) ^
3483 mfilt[pos / 32] |= (1 << (pos % 32));
3485 if_maddr_runlock(ifp);
3488 mfilt[0] = mfilt[1] = ~0;
3490 ath_hal_setmcastfilter(sc->sc_ah, mfilt[0], mfilt[1]);
3492 DPRINTF(sc, ATH_DEBUG_MODE, "%s: MC filter %08x:%08x\n",
3493 __func__, mfilt[0], mfilt[1]);
3497 * Called from the net80211 layer - force the hardware
3498 * awake before operating.
3501 ath_update_mcast(struct ieee80211com *ic)
3503 struct ath_softc *sc = ic->ic_softc;
3506 ath_power_set_power_state(sc, HAL_PM_AWAKE);
3509 ath_update_mcast_hw(sc);
3512 ath_power_restore_power_state(sc);
3517 ath_mode_init(struct ath_softc *sc)
3519 struct ieee80211com *ic = &sc->sc_ic;
3520 struct ath_hal *ah = sc->sc_ah;
3523 /* configure rx filter */
3524 rfilt = ath_calcrxfilter(sc);
3525 ath_hal_setrxfilter(ah, rfilt);
3527 /* configure operational mode */
3528 ath_hal_setopmode(ah);
3530 /* handle any link-level address change */
3531 ath_hal_setmac(ah, ic->ic_macaddr);
3533 /* calculate and install multicast filter */
3534 ath_update_mcast_hw(sc);
3538 * Set the slot time based on the current setting.
3541 ath_setslottime(struct ath_softc *sc)
3543 struct ieee80211com *ic = &sc->sc_ic;
3544 struct ath_hal *ah = sc->sc_ah;
3547 if (IEEE80211_IS_CHAN_HALF(ic->ic_curchan))
3549 else if (IEEE80211_IS_CHAN_QUARTER(ic->ic_curchan))
3551 else if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan)) {
3552 /* honor short/long slot time only in 11g */
3553 /* XXX shouldn't honor on pure g or turbo g channel */
3554 if (ic->ic_flags & IEEE80211_F_SHSLOT)
3555 usec = HAL_SLOT_TIME_9;
3557 usec = HAL_SLOT_TIME_20;
3559 usec = HAL_SLOT_TIME_9;
3561 DPRINTF(sc, ATH_DEBUG_RESET,
3562 "%s: chan %u MHz flags 0x%x %s slot, %u usec\n",
3563 __func__, ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags,
3564 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", usec);
3566 /* Wake up the hardware first before updating the slot time */
3568 ath_power_set_power_state(sc, HAL_PM_AWAKE);
3569 ath_hal_setslottime(ah, usec);
3570 ath_power_restore_power_state(sc);
3571 sc->sc_updateslot = OK;
3576 * Callback from the 802.11 layer to update the
3577 * slot time based on the current setting.
3580 ath_updateslot(struct ieee80211com *ic)
3582 struct ath_softc *sc = ic->ic_softc;
3585 * When not coordinating the BSS, change the hardware
3586 * immediately. For other operation we defer the change
3587 * until beacon updates have propagated to the stations.
3589 * XXX sc_updateslot isn't changed behind a lock?
3591 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
3592 ic->ic_opmode == IEEE80211_M_MBSS)
3593 sc->sc_updateslot = UPDATE;
3595 ath_setslottime(sc);
3599 * Append the contents of src to dst; both queues
3600 * are assumed to be locked.
3603 ath_txqmove(struct ath_txq *dst, struct ath_txq *src)
3606 ATH_TXQ_LOCK_ASSERT(src);
3607 ATH_TXQ_LOCK_ASSERT(dst);
3609 TAILQ_CONCAT(&dst->axq_q, &src->axq_q, bf_list);
3610 dst->axq_link = src->axq_link;
3611 src->axq_link = NULL;
3612 dst->axq_depth += src->axq_depth;
3613 dst->axq_aggr_depth += src->axq_aggr_depth;
3615 src->axq_aggr_depth = 0;
3619 * Reset the hardware, with no loss.
3621 * This can't be used for a general case reset.
3624 ath_reset_proc(void *arg, int pending)
3626 struct ath_softc *sc = arg;
3629 device_printf(sc->sc_dev, "%s: resetting\n", __func__);
3631 ath_reset(sc, ATH_RESET_NOLOSS);
3635 * Reset the hardware after detecting beacons have stopped.
3638 ath_bstuck_proc(void *arg, int pending)
3640 struct ath_softc *sc = arg;
3643 if (ath_hal_gethangstate(sc->sc_ah, 0xff, &hangs) && hangs != 0)
3644 device_printf(sc->sc_dev, "bb hang detected (0x%x)\n", hangs);
3646 #ifdef ATH_DEBUG_ALQ
3647 if (if_ath_alq_checkdebug(&sc->sc_alq, ATH_ALQ_STUCK_BEACON))
3648 if_ath_alq_post(&sc->sc_alq, ATH_ALQ_STUCK_BEACON, 0, NULL);
3651 device_printf(sc->sc_dev, "stuck beacon; resetting (bmiss count %u)\n",
3653 sc->sc_stats.ast_bstuck++;
3655 * This assumes that there's no simultaneous channel mode change
3658 ath_reset(sc, ATH_RESET_NOLOSS);
3662 ath_load_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
3664 bus_addr_t *paddr = (bus_addr_t*) arg;
3665 KASSERT(error == 0, ("error %u on bus_dma callback", error));
3666 *paddr = segs->ds_addr;
3670 * Allocate the descriptors and appropriate DMA tag/setup.
3672 * For some situations (eg EDMA TX completion), there isn't a requirement
3673 * for the ath_buf entries to be allocated.
3676 ath_descdma_alloc_desc(struct ath_softc *sc,
3677 struct ath_descdma *dd, ath_bufhead *head,
3678 const char *name, int ds_size, int ndesc)
3680 #define DS2PHYS(_dd, _ds) \
3681 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc))
3682 #define ATH_DESC_4KB_BOUND_CHECK(_daddr, _len) \
3683 ((((u_int32_t)(_daddr) & 0xFFF) > (0x1000 - (_len))) ? 1 : 0)
3686 dd->dd_descsize = ds_size;
3688 DPRINTF(sc, ATH_DEBUG_RESET,
3689 "%s: %s DMA: %u desc, %d bytes per descriptor\n",
3690 __func__, name, ndesc, dd->dd_descsize);
3693 dd->dd_desc_len = dd->dd_descsize * ndesc;
3696 * Merlin work-around:
3697 * Descriptors that cross the 4KB boundary can't be used.
3698 * Assume one skipped descriptor per 4KB page.
3700 if (! ath_hal_split4ktrans(sc->sc_ah)) {
3701 int numpages = dd->dd_desc_len / 4096;
3702 dd->dd_desc_len += ds_size * numpages;
3706 * Setup DMA descriptor area.
3708 * BUS_DMA_ALLOCNOW is not used; we never use bounce
3709 * buffers for the descriptors themselves.
3711 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), /* parent */
3712 PAGE_SIZE, 0, /* alignment, bounds */
3713 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
3714 BUS_SPACE_MAXADDR, /* highaddr */
3715 NULL, NULL, /* filter, filterarg */
3716 dd->dd_desc_len, /* maxsize */
3718 dd->dd_desc_len, /* maxsegsize */
3720 NULL, /* lockfunc */
3724 device_printf(sc->sc_dev,
3725 "cannot allocate %s DMA tag\n", dd->dd_name);
3729 /* allocate descriptors */
3730 error = bus_dmamem_alloc(dd->dd_dmat, (void**) &dd->dd_desc,
3731 BUS_DMA_NOWAIT | BUS_DMA_COHERENT,
3734 device_printf(sc->sc_dev,
3735 "unable to alloc memory for %u %s descriptors, error %u\n",
3736 ndesc, dd->dd_name, error);
3740 error = bus_dmamap_load(dd->dd_dmat, dd->dd_dmamap,
3741 dd->dd_desc, dd->dd_desc_len,
3742 ath_load_cb, &dd->dd_desc_paddr,
3745 device_printf(sc->sc_dev,
3746 "unable to map %s descriptors, error %u\n",
3747 dd->dd_name, error);
3751 DPRINTF(sc, ATH_DEBUG_RESET, "%s: %s DMA map: %p (%lu) -> %p (%lu)\n",
3752 __func__, dd->dd_name, (uint8_t *) dd->dd_desc,
3753 (u_long) dd->dd_desc_len, (caddr_t) dd->dd_desc_paddr,
3754 /*XXX*/ (u_long) dd->dd_desc_len);
3759 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap);
3761 bus_dma_tag_destroy(dd->dd_dmat);
3762 memset(dd, 0, sizeof(*dd));
3765 #undef ATH_DESC_4KB_BOUND_CHECK
3769 ath_descdma_setup(struct ath_softc *sc,
3770 struct ath_descdma *dd, ath_bufhead *head,
3771 const char *name, int ds_size, int nbuf, int ndesc)
3773 #define DS2PHYS(_dd, _ds) \
3774 ((_dd)->dd_desc_paddr + ((caddr_t)(_ds) - (caddr_t)(_dd)->dd_desc))
3775 #define ATH_DESC_4KB_BOUND_CHECK(_daddr, _len) \
3776 ((((u_int32_t)(_daddr) & 0xFFF) > (0x1000 - (_len))) ? 1 : 0)
3779 int i, bsize, error;
3781 /* Allocate descriptors */
3782 error = ath_descdma_alloc_desc(sc, dd, head, name, ds_size,
3785 /* Assume any errors during allocation were dealt with */
3790 ds = (uint8_t *) dd->dd_desc;
3792 /* allocate rx buffers */
3793 bsize = sizeof(struct ath_buf) * nbuf;
3794 bf = malloc(bsize, M_ATHDEV, M_NOWAIT | M_ZERO);
3796 device_printf(sc->sc_dev,
3797 "malloc of %s buffers failed, size %u\n",
3798 dd->dd_name, bsize);
3804 for (i = 0; i < nbuf; i++, bf++, ds += (ndesc * dd->dd_descsize)) {
3805 bf->bf_desc = (struct ath_desc *) ds;
3806 bf->bf_daddr = DS2PHYS(dd, ds);
3807 if (! ath_hal_split4ktrans(sc->sc_ah)) {
3809 * Merlin WAR: Skip descriptor addresses which
3810 * cause 4KB boundary crossing along any point
3811 * in the descriptor.
3813 if (ATH_DESC_4KB_BOUND_CHECK(bf->bf_daddr,
3815 /* Start at the next page */
3816 ds += 0x1000 - (bf->bf_daddr & 0xFFF);
3817 bf->bf_desc = (struct ath_desc *) ds;
3818 bf->bf_daddr = DS2PHYS(dd, ds);
3821 error = bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT,
3824 device_printf(sc->sc_dev, "unable to create dmamap "
3825 "for %s buffer %u, error %u\n",
3826 dd->dd_name, i, error);
3827 ath_descdma_cleanup(sc, dd, head);
3830 bf->bf_lastds = bf->bf_desc; /* Just an initial value */
3831 TAILQ_INSERT_TAIL(head, bf, bf_list);
3835 * XXX TODO: ensure that ds doesn't overflow the descriptor
3836 * allocation otherwise weird stuff will occur and crash your
3840 /* XXX this should likely just call ath_descdma_cleanup() */
3842 bus_dmamap_unload(dd->dd_dmat, dd->dd_dmamap);
3843 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap);
3844 bus_dma_tag_destroy(dd->dd_dmat);
3845 memset(dd, 0, sizeof(*dd));
3848 #undef ATH_DESC_4KB_BOUND_CHECK
3852 * Allocate ath_buf entries but no descriptor contents.
3854 * This is for RX EDMA where the descriptors are the header part of
3858 ath_descdma_setup_rx_edma(struct ath_softc *sc,
3859 struct ath_descdma *dd, ath_bufhead *head,
3860 const char *name, int nbuf, int rx_status_len)
3863 int i, bsize, error;
3865 DPRINTF(sc, ATH_DEBUG_RESET, "%s: %s DMA: %u buffers\n",
3866 __func__, name, nbuf);
3870 * This is (mostly) purely for show. We're not allocating any actual
3871 * descriptors here as EDMA RX has the descriptor be part
3874 * However, dd_desc_len is used by ath_descdma_free() to determine
3875 * whether we have already freed this DMA mapping.
3877 dd->dd_desc_len = rx_status_len * nbuf;
3878 dd->dd_descsize = rx_status_len;
3880 /* allocate rx buffers */
3881 bsize = sizeof(struct ath_buf) * nbuf;
3882 bf = malloc(bsize, M_ATHDEV, M_NOWAIT | M_ZERO);
3884 device_printf(sc->sc_dev,
3885 "malloc of %s buffers failed, size %u\n",
3886 dd->dd_name, bsize);
3893 for (i = 0; i < nbuf; i++, bf++) {
3896 bf->bf_lastds = NULL; /* Just an initial value */
3898 error = bus_dmamap_create(sc->sc_dmat, BUS_DMA_NOWAIT,
3901 device_printf(sc->sc_dev, "unable to create dmamap "
3902 "for %s buffer %u, error %u\n",
3903 dd->dd_name, i, error);
3904 ath_descdma_cleanup(sc, dd, head);
3907 TAILQ_INSERT_TAIL(head, bf, bf_list);
3911 memset(dd, 0, sizeof(*dd));
3916 ath_descdma_cleanup(struct ath_softc *sc,
3917 struct ath_descdma *dd, ath_bufhead *head)
3920 struct ieee80211_node *ni;
3923 if (dd->dd_dmamap != 0) {
3924 bus_dmamap_unload(dd->dd_dmat, dd->dd_dmamap);
3925 bus_dmamem_free(dd->dd_dmat, dd->dd_desc, dd->dd_dmamap);
3926 bus_dma_tag_destroy(dd->dd_dmat);
3930 TAILQ_FOREACH(bf, head, bf_list) {
3933 * XXX warn if there's buffers here.
3934 * XXX it should have been freed by the
3938 if (do_warning == 0) {
3940 device_printf(sc->sc_dev,
3941 "%s: %s: mbuf should've been"
3942 " unmapped/freed!\n",
3946 bus_dmamap_sync(sc->sc_dmat, bf->bf_dmamap,
3947 BUS_DMASYNC_POSTREAD);
3948 bus_dmamap_unload(sc->sc_dmat, bf->bf_dmamap);
3952 if (bf->bf_dmamap != NULL) {
3953 bus_dmamap_destroy(sc->sc_dmat, bf->bf_dmamap);
3954 bf->bf_dmamap = NULL;
3960 * Reclaim node reference.
3962 ieee80211_free_node(ni);
3970 if (dd->dd_bufptr != NULL)
3971 free(dd->dd_bufptr, M_ATHDEV);
3972 memset(dd, 0, sizeof(*dd));
3976 ath_desc_alloc(struct ath_softc *sc)
3980 error = ath_descdma_setup(sc, &sc->sc_txdma, &sc->sc_txbuf,
3981 "tx", sc->sc_tx_desclen, ath_txbuf, ATH_MAX_SCATTER);
3985 sc->sc_txbuf_cnt = ath_txbuf;
3987 error = ath_descdma_setup(sc, &sc->sc_txdma_mgmt, &sc->sc_txbuf_mgmt,
3988 "tx_mgmt", sc->sc_tx_desclen, ath_txbuf_mgmt,
3991 ath_descdma_cleanup(sc, &sc->sc_txdma, &sc->sc_txbuf);
3996 * XXX mark txbuf_mgmt frames with ATH_BUF_MGMT, so the
3997 * flag doesn't have to be set in ath_getbuf_locked().
4000 error = ath_descdma_setup(sc, &sc->sc_bdma, &sc->sc_bbuf,
4001 "beacon", sc->sc_tx_desclen, ATH_BCBUF, 1);
4003 ath_descdma_cleanup(sc, &sc->sc_txdma, &sc->sc_txbuf);
4004 ath_descdma_cleanup(sc, &sc->sc_txdma_mgmt,
4005 &sc->sc_txbuf_mgmt);
4012 ath_desc_free(struct ath_softc *sc)
4015 if (sc->sc_bdma.dd_desc_len != 0)
4016 ath_descdma_cleanup(sc, &sc->sc_bdma, &sc->sc_bbuf);
4017 if (sc->sc_txdma.dd_desc_len != 0)
4018 ath_descdma_cleanup(sc, &sc->sc_txdma, &sc->sc_txbuf);
4019 if (sc->sc_txdma_mgmt.dd_desc_len != 0)
4020 ath_descdma_cleanup(sc, &sc->sc_txdma_mgmt,
4021 &sc->sc_txbuf_mgmt);
4024 static struct ieee80211_node *
4025 ath_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
4027 struct ieee80211com *ic = vap->iv_ic;
4028 struct ath_softc *sc = ic->ic_softc;
4029 const size_t space = sizeof(struct ath_node) + sc->sc_rc->arc_space;
4030 struct ath_node *an;
4032 an = malloc(space, M_80211_NODE, M_NOWAIT|M_ZERO);
4037 ath_rate_node_init(sc, an);
4039 /* Setup the mutex - there's no associd yet so set the name to NULL */
4040 snprintf(an->an_name, sizeof(an->an_name), "%s: node %p",
4041 device_get_nameunit(sc->sc_dev), an);
4042 mtx_init(&an->an_mtx, an->an_name, NULL, MTX_DEF);
4044 /* XXX setup ath_tid */
4045 ath_tx_tid_init(sc, an);
4047 DPRINTF(sc, ATH_DEBUG_NODE, "%s: %6D: an %p\n", __func__, mac, ":", an);
4048 return &an->an_node;
4052 ath_node_cleanup(struct ieee80211_node *ni)
4054 struct ieee80211com *ic = ni->ni_ic;
4055 struct ath_softc *sc = ic->ic_softc;
4057 DPRINTF(sc, ATH_DEBUG_NODE, "%s: %6D: an %p\n", __func__,
4058 ni->ni_macaddr, ":", ATH_NODE(ni));
4060 /* Cleanup ath_tid, free unused bufs, unlink bufs in TXQ */
4061 ath_tx_node_flush(sc, ATH_NODE(ni));
4062 ath_rate_node_cleanup(sc, ATH_NODE(ni));
4063 sc->sc_node_cleanup(ni);
4067 ath_node_free(struct ieee80211_node *ni)
4069 struct ieee80211com *ic = ni->ni_ic;
4070 struct ath_softc *sc = ic->ic_softc;
4072 DPRINTF(sc, ATH_DEBUG_NODE, "%s: %6D: an %p\n", __func__,
4073 ni->ni_macaddr, ":", ATH_NODE(ni));
4074 mtx_destroy(&ATH_NODE(ni)->an_mtx);
4075 sc->sc_node_free(ni);
4079 ath_node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
4081 struct ieee80211com *ic = ni->ni_ic;
4082 struct ath_softc *sc = ic->ic_softc;
4083 struct ath_hal *ah = sc->sc_ah;
4085 *rssi = ic->ic_node_getrssi(ni);
4086 if (ni->ni_chan != IEEE80211_CHAN_ANYC)
4087 *noise = ath_hal_getchannoise(ah, ni->ni_chan);
4089 *noise = -95; /* nominally correct */
4093 * Set the default antenna.
4096 ath_setdefantenna(struct ath_softc *sc, u_int antenna)
4098 struct ath_hal *ah = sc->sc_ah;
4100 /* XXX block beacon interrupts */
4101 ath_hal_setdefantenna(ah, antenna);
4102 if (sc->sc_defant != antenna)
4103 sc->sc_stats.ast_ant_defswitch++;
4104 sc->sc_defant = antenna;
4105 sc->sc_rxotherant = 0;
4109 ath_txq_init(struct ath_softc *sc, struct ath_txq *txq, int qnum)
4111 txq->axq_qnum = qnum;
4114 txq->axq_aggr_depth = 0;
4115 txq->axq_intrcnt = 0;
4116 txq->axq_link = NULL;
4117 txq->axq_softc = sc;
4118 TAILQ_INIT(&txq->axq_q);
4119 TAILQ_INIT(&txq->axq_tidq);
4120 TAILQ_INIT(&txq->fifo.axq_q);
4121 ATH_TXQ_LOCK_INIT(sc, txq);
4125 * Setup a h/w transmit queue.
4127 static struct ath_txq *
4128 ath_txq_setup(struct ath_softc *sc, int qtype, int subtype)
4130 #define N(a) (sizeof(a)/sizeof(a[0]))
4131 struct ath_hal *ah = sc->sc_ah;
4135 memset(&qi, 0, sizeof(qi));
4136 qi.tqi_subtype = subtype;
4137 qi.tqi_aifs = HAL_TXQ_USEDEFAULT;
4138 qi.tqi_cwmin = HAL_TXQ_USEDEFAULT;
4139 qi.tqi_cwmax = HAL_TXQ_USEDEFAULT;
4141 * Enable interrupts only for EOL and DESC conditions.
4142 * We mark tx descriptors to receive a DESC interrupt
4143 * when a tx queue gets deep; otherwise waiting for the
4144 * EOL to reap descriptors. Note that this is done to
4145 * reduce interrupt load and this only defers reaping
4146 * descriptors, never transmitting frames. Aside from
4147 * reducing interrupts this also permits more concurrency.
4148 * The only potential downside is if the tx queue backs
4149 * up in which case the top half of the kernel may backup
4150 * due to a lack of tx descriptors.
4153 qi.tqi_qflags = HAL_TXQ_TXEOLINT_ENABLE |
4154 HAL_TXQ_TXOKINT_ENABLE;
4156 qi.tqi_qflags = HAL_TXQ_TXEOLINT_ENABLE |
4157 HAL_TXQ_TXDESCINT_ENABLE;
4159 qnum = ath_hal_setuptxqueue(ah, qtype, &qi);
4162 * NB: don't print a message, this happens
4163 * normally on parts with too few tx queues
4167 if (qnum >= N(sc->sc_txq)) {
4168 device_printf(sc->sc_dev,
4169 "hal qnum %u out of range, max %zu!\n",
4170 qnum, N(sc->sc_txq));
4171 ath_hal_releasetxqueue(ah, qnum);
4174 if (!ATH_TXQ_SETUP(sc, qnum)) {
4175 ath_txq_init(sc, &sc->sc_txq[qnum], qnum);
4176 sc->sc_txqsetup |= 1<<qnum;
4178 return &sc->sc_txq[qnum];
4183 * Setup a hardware data transmit queue for the specified
4184 * access control. The hal may not support all requested
4185 * queues in which case it will return a reference to a
4186 * previously setup queue. We record the mapping from ac's
4187 * to h/w queues for use by ath_tx_start and also track
4188 * the set of h/w queues being used to optimize work in the
4189 * transmit interrupt handler and related routines.
4192 ath_tx_setup(struct ath_softc *sc, int ac, int haltype)
4194 #define N(a) (sizeof(a)/sizeof(a[0]))
4195 struct ath_txq *txq;
4197 if (ac >= N(sc->sc_ac2q)) {
4198 device_printf(sc->sc_dev, "AC %u out of range, max %zu!\n",
4199 ac, N(sc->sc_ac2q));
4202 txq = ath_txq_setup(sc, HAL_TX_QUEUE_DATA, haltype);
4205 sc->sc_ac2q[ac] = txq;
4213 * Update WME parameters for a transmit queue.
4216 ath_txq_update(struct ath_softc *sc, int ac)
4218 #define ATH_EXPONENT_TO_VALUE(v) ((1<<v)-1)
4219 #define ATH_TXOP_TO_US(v) (v<<5)
4220 struct ieee80211com *ic = &sc->sc_ic;
4221 struct ath_txq *txq = sc->sc_ac2q[ac];
4222 struct wmeParams *wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac];
4223 struct ath_hal *ah = sc->sc_ah;
4226 ath_hal_gettxqueueprops(ah, txq->axq_qnum, &qi);
4227 #ifdef IEEE80211_SUPPORT_TDMA
4230 * AIFS is zero so there's no pre-transmit wait. The
4231 * burst time defines the slot duration and is configured
4232 * through net80211. The QCU is setup to not do post-xmit
4233 * back off, lockout all lower-priority QCU's, and fire
4234 * off the DMA beacon alert timer which is setup based
4235 * on the slot configuration.
4237 qi.tqi_qflags = HAL_TXQ_TXOKINT_ENABLE
4238 | HAL_TXQ_TXERRINT_ENABLE
4239 | HAL_TXQ_TXURNINT_ENABLE
4240 | HAL_TXQ_TXEOLINT_ENABLE
4242 | HAL_TXQ_BACKOFF_DISABLE
4243 | HAL_TXQ_ARB_LOCKOUT_GLOBAL
4247 qi.tqi_readyTime = sc->sc_tdmaslotlen;
4248 qi.tqi_burstTime = qi.tqi_readyTime;
4252 * XXX shouldn't this just use the default flags
4253 * used in the previous queue setup?
4255 qi.tqi_qflags = HAL_TXQ_TXOKINT_ENABLE
4256 | HAL_TXQ_TXERRINT_ENABLE
4257 | HAL_TXQ_TXDESCINT_ENABLE
4258 | HAL_TXQ_TXURNINT_ENABLE
4259 | HAL_TXQ_TXEOLINT_ENABLE
4261 qi.tqi_aifs = wmep->wmep_aifsn;
4262 qi.tqi_cwmin = ATH_EXPONENT_TO_VALUE(wmep->wmep_logcwmin);
4263 qi.tqi_cwmax = ATH_EXPONENT_TO_VALUE(wmep->wmep_logcwmax);
4264 qi.tqi_readyTime = 0;
4265 qi.tqi_burstTime = ATH_TXOP_TO_US(wmep->wmep_txopLimit);
4266 #ifdef IEEE80211_SUPPORT_TDMA
4270 DPRINTF(sc, ATH_DEBUG_RESET,
4271 "%s: Q%u qflags 0x%x aifs %u cwmin %u cwmax %u burstTime %u\n",
4272 __func__, txq->axq_qnum, qi.tqi_qflags,
4273 qi.tqi_aifs, qi.tqi_cwmin, qi.tqi_cwmax, qi.tqi_burstTime);
4275 if (!ath_hal_settxqueueprops(ah, txq->axq_qnum, &qi)) {
4276 device_printf(sc->sc_dev, "unable to update hardware queue "
4277 "parameters for %s traffic!\n", ieee80211_wme_acnames[ac]);
4280 ath_hal_resettxqueue(ah, txq->axq_qnum); /* push to h/w */
4283 #undef ATH_TXOP_TO_US
4284 #undef ATH_EXPONENT_TO_VALUE
4288 * Callback from the 802.11 layer to update WME parameters.
4291 ath_wme_update(struct ieee80211com *ic)
4293 struct ath_softc *sc = ic->ic_softc;
4295 return !ath_txq_update(sc, WME_AC_BE) ||
4296 !ath_txq_update(sc, WME_AC_BK) ||
4297 !ath_txq_update(sc, WME_AC_VI) ||
4298 !ath_txq_update(sc, WME_AC_VO) ? EIO : 0;
4302 * Reclaim resources for a setup queue.
4305 ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq)
4308 ath_hal_releasetxqueue(sc->sc_ah, txq->axq_qnum);
4309 sc->sc_txqsetup &= ~(1<<txq->axq_qnum);
4310 ATH_TXQ_LOCK_DESTROY(txq);
4314 * Reclaim all tx queue resources.
4317 ath_tx_cleanup(struct ath_softc *sc)
4321 ATH_TXBUF_LOCK_DESTROY(sc);
4322 for (i = 0; i < HAL_NUM_TX_QUEUES; i++)
4323 if (ATH_TXQ_SETUP(sc, i))
4324 ath_tx_cleanupq(sc, &sc->sc_txq[i]);
4328 * Return h/w rate index for an IEEE rate (w/o basic rate bit)
4329 * using the current rates in sc_rixmap.
4332 ath_tx_findrix(const struct ath_softc *sc, uint8_t rate)
4334 int rix = sc->sc_rixmap[rate];
4335 /* NB: return lowest rix for invalid rate */
4336 return (rix == 0xff ? 0 : rix);
4340 ath_tx_update_stats(struct ath_softc *sc, struct ath_tx_status *ts,
4343 struct ieee80211_node *ni = bf->bf_node;
4344 struct ieee80211com *ic = &sc->sc_ic;
4347 if (ts->ts_status == 0) {
4348 u_int8_t txant = ts->ts_antenna;
4349 sc->sc_stats.ast_ant_tx[txant]++;
4350 sc->sc_ant_tx[txant]++;
4351 if (ts->ts_finaltsi != 0)
4352 sc->sc_stats.ast_tx_altrate++;
4353 pri = M_WME_GETAC(bf->bf_m);
4354 if (pri >= WME_AC_VO)
4355 ic->ic_wme.wme_hipri_traffic++;
4356 if ((bf->bf_state.bfs_txflags & HAL_TXDESC_NOACK) == 0)
4357 ni->ni_inact = ni->ni_inact_reload;
4359 if (ts->ts_status & HAL_TXERR_XRETRY)
4360 sc->sc_stats.ast_tx_xretries++;
4361 if (ts->ts_status & HAL_TXERR_FIFO)
4362 sc->sc_stats.ast_tx_fifoerr++;
4363 if (ts->ts_status & HAL_TXERR_FILT)
4364 sc->sc_stats.ast_tx_filtered++;
4365 if (ts->ts_status & HAL_TXERR_XTXOP)
4366 sc->sc_stats.ast_tx_xtxop++;
4367 if (ts->ts_status & HAL_TXERR_TIMER_EXPIRED)
4368 sc->sc_stats.ast_tx_timerexpired++;
4370 if (bf->bf_m->m_flags & M_FF)
4371 sc->sc_stats.ast_ff_txerr++;
4373 /* XXX when is this valid? */
4374 if (ts->ts_flags & HAL_TX_DESC_CFG_ERR)
4375 sc->sc_stats.ast_tx_desccfgerr++;
4377 * This can be valid for successful frame transmission!
4378 * If there's a TX FIFO underrun during aggregate transmission,
4379 * the MAC will pad the rest of the aggregate with delimiters.
4380 * If a BA is returned, the frame is marked as "OK" and it's up
4381 * to the TX completion code to notice which frames weren't
4382 * successfully transmitted.
4384 if (ts->ts_flags & HAL_TX_DATA_UNDERRUN)
4385 sc->sc_stats.ast_tx_data_underrun++;
4386 if (ts->ts_flags & HAL_TX_DELIM_UNDERRUN)
4387 sc->sc_stats.ast_tx_delim_underrun++;
4389 sr = ts->ts_shortretry;
4390 lr = ts->ts_longretry;
4391 sc->sc_stats.ast_tx_shortretry += sr;
4392 sc->sc_stats.ast_tx_longretry += lr;
4397 * The default completion. If fail is 1, this means
4398 * "please don't retry the frame, and just return -1 status
4399 * to the net80211 stack.
4402 ath_tx_default_comp(struct ath_softc *sc, struct ath_buf *bf, int fail)
4404 struct ath_tx_status *ts = &bf->bf_status.ds_txstat;
4410 st = ((bf->bf_state.bfs_txflags & HAL_TXDESC_NOACK) == 0) ?
4411 ts->ts_status : HAL_TXERR_XRETRY;
4414 if (bf->bf_state.bfs_dobaw)
4415 device_printf(sc->sc_dev,
4416 "%s: bf %p: seqno %d: dobaw should've been cleared!\n",
4419 SEQNO(bf->bf_state.bfs_seqno));
4421 if (bf->bf_next != NULL)
4422 device_printf(sc->sc_dev,
4423 "%s: bf %p: seqno %d: bf_next not NULL!\n",
4426 SEQNO(bf->bf_state.bfs_seqno));
4429 * Check if the node software queue is empty; if so
4430 * then clear the TIM.
4432 * This needs to be done before the buffer is freed as
4433 * otherwise the node reference will have been released
4434 * and the node may not actually exist any longer.
4436 * XXX I don't like this belonging here, but it's cleaner
4437 * to do it here right now then all the other places
4438 * where ath_tx_default_comp() is called.
4440 * XXX TODO: during drain, ensure that the callback is
4441 * being called so we get a chance to update the TIM.
4445 ath_tx_update_tim(sc, bf->bf_node, 0);
4450 * Do any tx complete callback. Note this must
4451 * be done before releasing the node reference.
4452 * This will free the mbuf, release the net80211
4453 * node and recycle the ath_buf.
4455 ath_tx_freebuf(sc, bf, st);
4459 * Update rate control with the given completion status.
4462 ath_tx_update_ratectrl(struct ath_softc *sc, struct ieee80211_node *ni,
4463 struct ath_rc_series *rc, struct ath_tx_status *ts, int frmlen,
4464 int nframes, int nbad)
4466 struct ath_node *an;
4468 /* Only for unicast frames */
4473 ATH_NODE_UNLOCK_ASSERT(an);
4475 if ((ts->ts_status & HAL_TXERR_FILT) == 0) {
4477 ath_rate_tx_complete(sc, an, rc, ts, frmlen, nframes, nbad);
4478 ATH_NODE_UNLOCK(an);
4483 * Process the completion of the given buffer.
4485 * This calls the rate control update and then the buffer completion.
4486 * This will either free the buffer or requeue it. In any case, the
4487 * bf pointer should be treated as invalid after this function is called.
4490 ath_tx_process_buf_completion(struct ath_softc *sc, struct ath_txq *txq,
4491 struct ath_tx_status *ts, struct ath_buf *bf)
4493 struct ieee80211_node *ni = bf->bf_node;
4495 ATH_TX_UNLOCK_ASSERT(sc);
4496 ATH_TXQ_UNLOCK_ASSERT(txq);
4498 /* If unicast frame, update general statistics */
4500 /* update statistics */
4501 ath_tx_update_stats(sc, ts, bf);
4505 * Call the completion handler.
4506 * The completion handler is responsible for
4507 * calling the rate control code.
4509 * Frames with no completion handler get the
4510 * rate control code called here.
4512 if (bf->bf_comp == NULL) {
4513 if ((ts->ts_status & HAL_TXERR_FILT) == 0 &&
4514 (bf->bf_state.bfs_txflags & HAL_TXDESC_NOACK) == 0) {
4516 * XXX assume this isn't an aggregate
4519 ath_tx_update_ratectrl(sc, ni,
4520 bf->bf_state.bfs_rc, ts,
4521 bf->bf_state.bfs_pktlen, 1,
4522 (ts->ts_status == 0 ? 0 : 1));
4524 ath_tx_default_comp(sc, bf, 0);
4526 bf->bf_comp(sc, bf, 0);
4532 * Process completed xmit descriptors from the specified queue.
4533 * Kick the packet scheduler if needed. This can occur from this
4537 ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq, int dosched)
4539 struct ath_hal *ah = sc->sc_ah;
4541 struct ath_desc *ds;
4542 struct ath_tx_status *ts;
4543 struct ieee80211_node *ni;
4544 #ifdef IEEE80211_SUPPORT_SUPERG
4545 struct ieee80211com *ic = &sc->sc_ic;
4546 #endif /* IEEE80211_SUPPORT_SUPERG */
4550 DPRINTF(sc, ATH_DEBUG_TX_PROC, "%s: tx queue %u head %p link %p\n",
4551 __func__, txq->axq_qnum,
4552 (caddr_t)(uintptr_t) ath_hal_gettxbuf(sc->sc_ah, txq->axq_qnum),
4555 ATH_KTR(sc, ATH_KTR_TXCOMP, 4,
4556 "ath_tx_processq: txq=%u head %p link %p depth %p",
4558 (caddr_t)(uintptr_t) ath_hal_gettxbuf(sc->sc_ah, txq->axq_qnum),
4565 txq->axq_intrcnt = 0; /* reset periodic desc intr count */
4566 bf = TAILQ_FIRST(&txq->axq_q);
4568 ATH_TXQ_UNLOCK(txq);
4571 ds = bf->bf_lastds; /* XXX must be setup correctly! */
4572 ts = &bf->bf_status.ds_txstat;
4574 status = ath_hal_txprocdesc(ah, ds, ts);
4576 if (sc->sc_debug & ATH_DEBUG_XMIT_DESC)
4577 ath_printtxbuf(sc, bf, txq->axq_qnum, 0,
4579 else if ((sc->sc_debug & ATH_DEBUG_RESET) && (dosched == 0))
4580 ath_printtxbuf(sc, bf, txq->axq_qnum, 0,
4583 #ifdef ATH_DEBUG_ALQ
4584 if (if_ath_alq_checkdebug(&sc->sc_alq,
4585 ATH_ALQ_EDMA_TXSTATUS)) {
4586 if_ath_alq_post(&sc->sc_alq, ATH_ALQ_EDMA_TXSTATUS,
4587 sc->sc_tx_statuslen,
4592 if (status == HAL_EINPROGRESS) {
4593 ATH_KTR(sc, ATH_KTR_TXCOMP, 3,
4594 "ath_tx_processq: txq=%u, bf=%p ds=%p, HAL_EINPROGRESS",
4595 txq->axq_qnum, bf, ds);
4596 ATH_TXQ_UNLOCK(txq);
4599 ATH_TXQ_REMOVE(txq, bf, bf_list);
4604 if (txq->axq_qnum != bf->bf_state.bfs_tx_queue) {
4605 device_printf(sc->sc_dev,
4606 "%s: TXQ=%d: bf=%p, bfs_tx_queue=%d\n",
4610 bf->bf_state.bfs_tx_queue);
4612 if (txq->axq_qnum != bf->bf_last->bf_state.bfs_tx_queue) {
4613 device_printf(sc->sc_dev,
4614 "%s: TXQ=%d: bf_last=%p, bfs_tx_queue=%d\n",
4618 bf->bf_last->bf_state.bfs_tx_queue);
4622 if (txq->axq_depth > 0) {
4624 * More frames follow. Mark the buffer busy
4625 * so it's not re-used while the hardware may
4626 * still re-read the link field in the descriptor.
4628 * Use the last buffer in an aggregate as that
4629 * is where the hardware may be - intermediate
4630 * descriptors won't be "busy".
4632 bf->bf_last->bf_flags |= ATH_BUF_BUSY;
4634 txq->axq_link = NULL;
4636 bf->bf_last->bf_flags |= ATH_BUF_BUSY;
4638 if (bf->bf_state.bfs_aggr)
4639 txq->axq_aggr_depth--;
4643 ATH_KTR(sc, ATH_KTR_TXCOMP, 5,
4644 "ath_tx_processq: txq=%u, bf=%p, ds=%p, ni=%p, ts_status=0x%08x",
4645 txq->axq_qnum, bf, ds, ni, ts->ts_status);
4647 * If unicast frame was ack'd update RSSI,
4648 * including the last rx time used to
4649 * workaround phantom bmiss interrupts.
4651 if (ni != NULL && ts->ts_status == 0 &&
4652 ((bf->bf_state.bfs_txflags & HAL_TXDESC_NOACK) == 0)) {
4654 sc->sc_stats.ast_tx_rssi = ts->ts_rssi;
4655 ATH_RSSI_LPF(sc->sc_halstats.ns_avgtxrssi,
4658 ATH_TXQ_UNLOCK(txq);
4661 * Update statistics and call completion
4663 ath_tx_process_buf_completion(sc, txq, ts, bf);
4665 /* XXX at this point, bf and ni may be totally invalid */
4667 #ifdef IEEE80211_SUPPORT_SUPERG
4669 * Flush fast-frame staging queue when traffic slows.
4671 if (txq->axq_depth <= 1)
4672 ieee80211_ff_flush(ic, txq->axq_ac);
4675 /* Kick the software TXQ scheduler */
4678 ath_txq_sched(sc, txq);
4682 ATH_KTR(sc, ATH_KTR_TXCOMP, 1,
4683 "ath_tx_processq: txq=%u: done",
4689 #define TXQACTIVE(t, q) ( (t) & (1 << (q)))
4692 * Deferred processing of transmit interrupt; special-cased
4693 * for a single hardware transmit queue (e.g. 5210 and 5211).
4696 ath_tx_proc_q0(void *arg, int npending)
4698 struct ath_softc *sc = arg;
4702 sc->sc_txproc_cnt++;
4703 txqs = sc->sc_txq_active;
4704 sc->sc_txq_active &= ~txqs;
4708 ath_power_set_power_state(sc, HAL_PM_AWAKE);
4711 ATH_KTR(sc, ATH_KTR_TXCOMP, 1,
4712 "ath_tx_proc_q0: txqs=0x%08x", txqs);
4714 if (TXQACTIVE(txqs, 0) && ath_tx_processq(sc, &sc->sc_txq[0], 1))
4715 /* XXX why is lastrx updated in tx code? */
4716 sc->sc_lastrx = ath_hal_gettsf64(sc->sc_ah);
4717 if (TXQACTIVE(txqs, sc->sc_cabq->axq_qnum))
4718 ath_tx_processq(sc, sc->sc_cabq, 1);
4719 sc->sc_wd_timer = 0;
4722 ath_led_event(sc, sc->sc_txrix);
4725 sc->sc_txproc_cnt--;
4729 ath_power_restore_power_state(sc);
4736 * Deferred processing of transmit interrupt; special-cased
4737 * for four hardware queues, 0-3 (e.g. 5212 w/ WME support).
4740 ath_tx_proc_q0123(void *arg, int npending)
4742 struct ath_softc *sc = arg;
4747 sc->sc_txproc_cnt++;
4748 txqs = sc->sc_txq_active;
4749 sc->sc_txq_active &= ~txqs;
4753 ath_power_set_power_state(sc, HAL_PM_AWAKE);
4756 ATH_KTR(sc, ATH_KTR_TXCOMP, 1,
4757 "ath_tx_proc_q0123: txqs=0x%08x", txqs);
4760 * Process each active queue.
4763 if (TXQACTIVE(txqs, 0))
4764 nacked += ath_tx_processq(sc, &sc->sc_txq[0], 1);
4765 if (TXQACTIVE(txqs, 1))
4766 nacked += ath_tx_processq(sc, &sc->sc_txq[1], 1);
4767 if (TXQACTIVE(txqs, 2))
4768 nacked += ath_tx_processq(sc, &sc->sc_txq[2], 1);
4769 if (TXQACTIVE(txqs, 3))
4770 nacked += ath_tx_processq(sc, &sc->sc_txq[3], 1);
4771 if (TXQACTIVE(txqs, sc->sc_cabq->axq_qnum))
4772 ath_tx_processq(sc, sc->sc_cabq, 1);
4774 sc->sc_lastrx = ath_hal_gettsf64(sc->sc_ah);
4776 sc->sc_wd_timer = 0;
4779 ath_led_event(sc, sc->sc_txrix);
4782 sc->sc_txproc_cnt--;
4786 ath_power_restore_power_state(sc);
4793 * Deferred processing of transmit interrupt.
4796 ath_tx_proc(void *arg, int npending)
4798 struct ath_softc *sc = arg;
4803 sc->sc_txproc_cnt++;
4804 txqs = sc->sc_txq_active;
4805 sc->sc_txq_active &= ~txqs;
4809 ath_power_set_power_state(sc, HAL_PM_AWAKE);
4812 ATH_KTR(sc, ATH_KTR_TXCOMP, 1, "ath_tx_proc: txqs=0x%08x", txqs);
4815 * Process each active queue.
4818 for (i = 0; i < HAL_NUM_TX_QUEUES; i++)
4819 if (ATH_TXQ_SETUP(sc, i) && TXQACTIVE(txqs, i))
4820 nacked += ath_tx_processq(sc, &sc->sc_txq[i], 1);
4822 sc->sc_lastrx = ath_hal_gettsf64(sc->sc_ah);
4824 sc->sc_wd_timer = 0;
4827 ath_led_event(sc, sc->sc_txrix);
4830 sc->sc_txproc_cnt--;
4834 ath_power_restore_power_state(sc);
4842 * Deferred processing of TXQ rescheduling.
4845 ath_txq_sched_tasklet(void *arg, int npending)
4847 struct ath_softc *sc = arg;
4850 /* XXX is skipping ok? */
4853 if (sc->sc_inreset_cnt > 0) {
4854 device_printf(sc->sc_dev,
4855 "%s: sc_inreset_cnt > 0; skipping\n", __func__);
4860 sc->sc_txproc_cnt++;
4864 ath_power_set_power_state(sc, HAL_PM_AWAKE);
4868 for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
4869 if (ATH_TXQ_SETUP(sc, i)) {
4870 ath_txq_sched(sc, &sc->sc_txq[i]);
4876 ath_power_restore_power_state(sc);
4880 sc->sc_txproc_cnt--;
4885 ath_returnbuf_tail(struct ath_softc *sc, struct ath_buf *bf)
4888 ATH_TXBUF_LOCK_ASSERT(sc);
4890 if (bf->bf_flags & ATH_BUF_MGMT)
4891 TAILQ_INSERT_TAIL(&sc->sc_txbuf_mgmt, bf, bf_list);
4893 TAILQ_INSERT_TAIL(&sc->sc_txbuf, bf, bf_list);
4895 if (sc->sc_txbuf_cnt > ath_txbuf) {
4896 device_printf(sc->sc_dev,
4897 "%s: sc_txbuf_cnt > %d?\n",
4900 sc->sc_txbuf_cnt = ath_txbuf;
4906 ath_returnbuf_head(struct ath_softc *sc, struct ath_buf *bf)
4909 ATH_TXBUF_LOCK_ASSERT(sc);
4911 if (bf->bf_flags & ATH_BUF_MGMT)
4912 TAILQ_INSERT_HEAD(&sc->sc_txbuf_mgmt, bf, bf_list);
4914 TAILQ_INSERT_HEAD(&sc->sc_txbuf, bf, bf_list);
4916 if (sc->sc_txbuf_cnt > ATH_TXBUF) {
4917 device_printf(sc->sc_dev,
4918 "%s: sc_txbuf_cnt > %d?\n",
4921 sc->sc_txbuf_cnt = ATH_TXBUF;
4927 * Free the holding buffer if it exists
4930 ath_txq_freeholdingbuf(struct ath_softc *sc, struct ath_txq *txq)
4932 ATH_TXBUF_UNLOCK_ASSERT(sc);
4933 ATH_TXQ_LOCK_ASSERT(txq);
4935 if (txq->axq_holdingbf == NULL)
4938 txq->axq_holdingbf->bf_flags &= ~ATH_BUF_BUSY;
4941 ath_returnbuf_tail(sc, txq->axq_holdingbf);
4942 ATH_TXBUF_UNLOCK(sc);
4944 txq->axq_holdingbf = NULL;
4948 * Add this buffer to the holding queue, freeing the previous
4952 ath_txq_addholdingbuf(struct ath_softc *sc, struct ath_buf *bf)
4954 struct ath_txq *txq;
4956 txq = &sc->sc_txq[bf->bf_state.bfs_tx_queue];
4958 ATH_TXBUF_UNLOCK_ASSERT(sc);
4959 ATH_TXQ_LOCK_ASSERT(txq);
4961 /* XXX assert ATH_BUF_BUSY is set */
4963 /* XXX assert the tx queue is under the max number */
4964 if (bf->bf_state.bfs_tx_queue > HAL_NUM_TX_QUEUES) {
4965 device_printf(sc->sc_dev, "%s: bf=%p: invalid tx queue (%d)\n",
4968 bf->bf_state.bfs_tx_queue);
4969 bf->bf_flags &= ~ATH_BUF_BUSY;
4970 ath_returnbuf_tail(sc, bf);
4973 ath_txq_freeholdingbuf(sc, txq);
4974 txq->axq_holdingbf = bf;
4978 * Return a buffer to the pool and update the 'busy' flag on the
4979 * previous 'tail' entry.
4981 * This _must_ only be called when the buffer is involved in a completed
4982 * TX. The logic is that if it was part of an active TX, the previous
4983 * buffer on the list is now not involved in a halted TX DMA queue, waiting
4984 * for restart (eg for TDMA.)
4986 * The caller must free the mbuf and recycle the node reference.
4988 * XXX This method of handling busy / holding buffers is insanely stupid.
4989 * It requires bf_state.bfs_tx_queue to be correctly assigned. It would
4990 * be much nicer if buffers in the processq() methods would instead be
4991 * always completed there (pushed onto a txq or ath_bufhead) so we knew
4992 * exactly what hardware queue they came from in the first place.
4995 ath_freebuf(struct ath_softc *sc, struct ath_buf *bf)
4997 struct ath_txq *txq;
4999 txq = &sc->sc_txq[bf->bf_state.bfs_tx_queue];
5001 KASSERT((bf->bf_node == NULL), ("%s: bf->bf_node != NULL\n", __func__));
5002 KASSERT((bf->bf_m == NULL), ("%s: bf->bf_m != NULL\n", __func__));
5005 * If this buffer is busy, push it onto the holding queue.
5007 if (bf->bf_flags & ATH_BUF_BUSY) {
5009 ath_txq_addholdingbuf(sc, bf);
5010 ATH_TXQ_UNLOCK(txq);
5015 * Not a busy buffer, so free normally
5018 ath_returnbuf_tail(sc, bf);
5019 ATH_TXBUF_UNLOCK(sc);
5023 * This is currently used by ath_tx_draintxq() and
5024 * ath_tx_tid_free_pkts().
5026 * It recycles a single ath_buf.
5029 ath_tx_freebuf(struct ath_softc *sc, struct ath_buf *bf, int status)
5031 struct ieee80211_node *ni = bf->bf_node;
5032 struct mbuf *m0 = bf->bf_m;
5035 * Make sure that we only sync/unload if there's an mbuf.
5036 * If not (eg we cloned a buffer), the unload will have already
5039 if (bf->bf_m != NULL) {
5040 bus_dmamap_sync(sc->sc_dmat, bf->bf_dmamap,
5041 BUS_DMASYNC_POSTWRITE);
5042 bus_dmamap_unload(sc->sc_dmat, bf->bf_dmamap);
5048 /* Free the buffer, it's not needed any longer */
5049 ath_freebuf(sc, bf);
5051 /* Pass the buffer back to net80211 - completing it */
5052 ieee80211_tx_complete(ni, m0, status);
5055 static struct ath_buf *
5056 ath_tx_draintxq_get_one(struct ath_softc *sc, struct ath_txq *txq)
5060 ATH_TXQ_LOCK_ASSERT(txq);
5063 * Drain the FIFO queue first, then if it's
5064 * empty, move to the normal frame queue.
5066 bf = TAILQ_FIRST(&txq->fifo.axq_q);
5069 * Is it the last buffer in this set?
5070 * Decrement the FIFO counter.
5072 if (bf->bf_flags & ATH_BUF_FIFOEND) {
5073 if (txq->axq_fifo_depth == 0) {
5074 device_printf(sc->sc_dev,
5075 "%s: Q%d: fifo_depth=0, fifo.axq_depth=%d?\n",
5078 txq->fifo.axq_depth);
5080 txq->axq_fifo_depth--;
5082 ATH_TXQ_REMOVE(&txq->fifo, bf, bf_list);
5089 if (txq->axq_fifo_depth != 0 || txq->fifo.axq_depth != 0) {
5090 device_printf(sc->sc_dev,
5091 "%s: Q%d: fifo_depth=%d, fifo.axq_depth=%d\n",
5094 txq->axq_fifo_depth,
5095 txq->fifo.axq_depth);
5099 * Now drain the pending queue.
5101 bf = TAILQ_FIRST(&txq->axq_q);
5103 txq->axq_link = NULL;
5106 ATH_TXQ_REMOVE(txq, bf, bf_list);
5111 ath_tx_draintxq(struct ath_softc *sc, struct ath_txq *txq)
5114 struct ath_hal *ah = sc->sc_ah;
5120 * NB: this assumes output has been stopped and
5121 * we do not need to block ath_tx_proc
5123 for (ix = 0;; ix++) {
5125 bf = ath_tx_draintxq_get_one(sc, txq);
5127 ATH_TXQ_UNLOCK(txq);
5130 if (bf->bf_state.bfs_aggr)
5131 txq->axq_aggr_depth--;
5133 if (sc->sc_debug & ATH_DEBUG_RESET) {
5134 struct ieee80211com *ic = &sc->sc_ic;
5138 * EDMA operation has a TX completion FIFO
5139 * separate from the TX descriptor, so this
5140 * method of checking the "completion" status
5143 if (! sc->sc_isedma) {
5144 status = (ath_hal_txprocdesc(ah,
5146 &bf->bf_status.ds_txstat) == HAL_OK);
5148 ath_printtxbuf(sc, bf, txq->axq_qnum, ix, status);
5149 ieee80211_dump_pkt(ic, mtod(bf->bf_m, const uint8_t *),
5150 bf->bf_m->m_len, 0, -1);
5152 #endif /* ATH_DEBUG */
5154 * Since we're now doing magic in the completion
5155 * functions, we -must- call it for aggregation
5156 * destinations or BAW tracking will get upset.
5159 * Clear ATH_BUF_BUSY; the completion handler
5160 * will free the buffer.
5162 ATH_TXQ_UNLOCK(txq);
5163 bf->bf_flags &= ~ATH_BUF_BUSY;
5165 bf->bf_comp(sc, bf, 1);
5167 ath_tx_default_comp(sc, bf, 1);
5171 * Free the holding buffer if it exists
5174 ath_txq_freeholdingbuf(sc, txq);
5175 ATH_TXQ_UNLOCK(txq);
5178 * Drain software queued frames which are on
5181 ath_tx_txq_drain(sc, txq);
5185 ath_tx_stopdma(struct ath_softc *sc, struct ath_txq *txq)
5187 struct ath_hal *ah = sc->sc_ah;
5189 ATH_TXQ_LOCK_ASSERT(txq);
5191 DPRINTF(sc, ATH_DEBUG_RESET,
5192 "%s: tx queue [%u] %p, active=%d, hwpending=%d, flags 0x%08x, "
5193 "link %p, holdingbf=%p\n",
5196 (caddr_t)(uintptr_t) ath_hal_gettxbuf(ah, txq->axq_qnum),
5197 (int) (!! ath_hal_txqenabled(ah, txq->axq_qnum)),
5198 (int) ath_hal_numtxpending(ah, txq->axq_qnum),
5201 txq->axq_holdingbf);
5203 (void) ath_hal_stoptxdma(ah, txq->axq_qnum);
5204 /* We've stopped TX DMA, so mark this as stopped. */
5205 txq->axq_flags &= ~ATH_TXQ_PUTRUNNING;
5208 if ((sc->sc_debug & ATH_DEBUG_RESET)
5209 && (txq->axq_holdingbf != NULL)) {
5210 ath_printtxbuf(sc, txq->axq_holdingbf, txq->axq_qnum, 0, 0);
5216 ath_stoptxdma(struct ath_softc *sc)
5218 struct ath_hal *ah = sc->sc_ah;
5221 /* XXX return value */
5225 if (!sc->sc_invalid) {
5226 /* don't touch the hardware if marked invalid */
5227 DPRINTF(sc, ATH_DEBUG_RESET, "%s: tx queue [%u] %p, link %p\n",
5228 __func__, sc->sc_bhalq,
5229 (caddr_t)(uintptr_t) ath_hal_gettxbuf(ah, sc->sc_bhalq),
5232 /* stop the beacon queue */
5233 (void) ath_hal_stoptxdma(ah, sc->sc_bhalq);
5235 /* Stop the data queues */
5236 for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
5237 if (ATH_TXQ_SETUP(sc, i)) {
5238 ATH_TXQ_LOCK(&sc->sc_txq[i]);
5239 ath_tx_stopdma(sc, &sc->sc_txq[i]);
5240 ATH_TXQ_UNLOCK(&sc->sc_txq[i]);
5250 ath_tx_dump(struct ath_softc *sc, struct ath_txq *txq)
5252 struct ath_hal *ah = sc->sc_ah;
5256 if (! (sc->sc_debug & ATH_DEBUG_RESET))
5259 device_printf(sc->sc_dev, "%s: Q%d: begin\n",
5260 __func__, txq->axq_qnum);
5261 TAILQ_FOREACH(bf, &txq->axq_q, bf_list) {
5262 ath_printtxbuf(sc, bf, txq->axq_qnum, i,
5263 ath_hal_txprocdesc(ah, bf->bf_lastds,
5264 &bf->bf_status.ds_txstat) == HAL_OK);
5267 device_printf(sc->sc_dev, "%s: Q%d: end\n",
5268 __func__, txq->axq_qnum);
5270 #endif /* ATH_DEBUG */
5273 * Drain the transmit queues and reclaim resources.
5276 ath_legacy_tx_drain(struct ath_softc *sc, ATH_RESET_TYPE reset_type)
5278 struct ath_hal *ah = sc->sc_ah;
5279 struct ath_buf *bf_last;
5282 (void) ath_stoptxdma(sc);
5285 * Dump the queue contents
5287 for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
5289 * XXX TODO: should we just handle the completed TX frames
5290 * here, whether or not the reset is a full one or not?
5292 if (ATH_TXQ_SETUP(sc, i)) {
5294 if (sc->sc_debug & ATH_DEBUG_RESET)
5295 ath_tx_dump(sc, &sc->sc_txq[i]);
5296 #endif /* ATH_DEBUG */
5297 if (reset_type == ATH_RESET_NOLOSS) {
5298 ath_tx_processq(sc, &sc->sc_txq[i], 0);
5299 ATH_TXQ_LOCK(&sc->sc_txq[i]);
5301 * Free the holding buffer; DMA is now
5304 ath_txq_freeholdingbuf(sc, &sc->sc_txq[i]);
5306 * Setup the link pointer to be the
5307 * _last_ buffer/descriptor in the list.
5308 * If there's nothing in the list, set it
5311 bf_last = ATH_TXQ_LAST(&sc->sc_txq[i],
5313 if (bf_last != NULL) {
5314 ath_hal_gettxdesclinkptr(ah,
5316 &sc->sc_txq[i].axq_link);
5318 sc->sc_txq[i].axq_link = NULL;
5320 ATH_TXQ_UNLOCK(&sc->sc_txq[i]);
5322 ath_tx_draintxq(sc, &sc->sc_txq[i]);
5326 if (sc->sc_debug & ATH_DEBUG_RESET) {
5327 struct ath_buf *bf = TAILQ_FIRST(&sc->sc_bbuf);
5328 if (bf != NULL && bf->bf_m != NULL) {
5329 ath_printtxbuf(sc, bf, sc->sc_bhalq, 0,
5330 ath_hal_txprocdesc(ah, bf->bf_lastds,
5331 &bf->bf_status.ds_txstat) == HAL_OK);
5332 ieee80211_dump_pkt(&sc->sc_ic,
5333 mtod(bf->bf_m, const uint8_t *), bf->bf_m->m_len,
5337 #endif /* ATH_DEBUG */
5338 sc->sc_wd_timer = 0;
5342 * Update internal state after a channel change.
5345 ath_chan_change(struct ath_softc *sc, struct ieee80211_channel *chan)
5347 enum ieee80211_phymode mode;
5350 * Change channels and update the h/w rate map
5351 * if we're switching; e.g. 11a to 11b/g.
5353 mode = ieee80211_chan2mode(chan);
5354 if (mode != sc->sc_curmode)
5355 ath_setcurmode(sc, mode);
5356 sc->sc_curchan = chan;
5360 * Set/change channels. If the channel is really being changed,
5361 * it's done by resetting the chip. To accomplish this we must
5362 * first cleanup any pending DMA, then restart stuff after a la
5366 ath_chan_set(struct ath_softc *sc, struct ieee80211_channel *chan)
5368 struct ieee80211com *ic = &sc->sc_ic;
5369 struct ath_hal *ah = sc->sc_ah;
5372 /* Treat this as an interface reset */
5373 ATH_PCU_UNLOCK_ASSERT(sc);
5374 ATH_UNLOCK_ASSERT(sc);
5376 /* (Try to) stop TX/RX from occuring */
5377 taskqueue_block(sc->sc_tq);
5381 /* Disable interrupts */
5382 ath_hal_intrset(ah, 0);
5384 /* Stop new RX/TX/interrupt completion */
5385 if (ath_reset_grablock(sc, 1) == 0) {
5386 device_printf(sc->sc_dev, "%s: concurrent reset! Danger!\n",
5390 /* Stop pending RX/TX completion */
5391 ath_txrx_stop_locked(sc);
5395 DPRINTF(sc, ATH_DEBUG_RESET, "%s: %u (%u MHz, flags 0x%x)\n",
5396 __func__, ieee80211_chan2ieee(ic, chan),
5397 chan->ic_freq, chan->ic_flags);
5398 if (chan != sc->sc_curchan) {
5401 * To switch channels clear any pending DMA operations;
5402 * wait long enough for the RX fifo to drain, reset the
5403 * hardware at the new frequency, and then re-enable
5404 * the relevant bits of the h/w.
5407 ath_hal_intrset(ah, 0); /* disable interrupts */
5409 ath_stoprecv(sc, 1); /* turn off frame recv */
5411 * First, handle completed TX/RX frames.
5414 ath_draintxq(sc, ATH_RESET_NOLOSS);
5416 * Next, flush the non-scheduled frames.
5418 ath_draintxq(sc, ATH_RESET_FULL); /* clear pending tx frames */
5420 ath_update_chainmasks(sc, chan);
5421 ath_hal_setchainmasks(sc->sc_ah, sc->sc_cur_txchainmask,
5422 sc->sc_cur_rxchainmask);
5423 if (!ath_hal_reset(ah, sc->sc_opmode, chan, AH_TRUE, &status)) {
5424 device_printf(sc->sc_dev, "%s: unable to reset "
5425 "channel %u (%u MHz, flags 0x%x), hal status %u\n",
5426 __func__, ieee80211_chan2ieee(ic, chan),
5427 chan->ic_freq, chan->ic_flags, status);
5431 sc->sc_diversity = ath_hal_getdiversity(ah);
5434 sc->sc_rx_stopped = 1;
5435 sc->sc_rx_resetted = 1;
5438 /* Let DFS at it in case it's a DFS channel */
5439 ath_dfs_radar_enable(sc, chan);
5441 /* Let spectral at in case spectral is enabled */
5442 ath_spectral_enable(sc, chan);
5445 * Let bluetooth coexistence at in case it's needed for this
5448 ath_btcoex_enable(sc, ic->ic_curchan);
5451 * If we're doing TDMA, enforce the TXOP limitation for chips
5454 if (sc->sc_hasenforcetxop && sc->sc_tdma)
5455 ath_hal_setenforcetxop(sc->sc_ah, 1);
5457 ath_hal_setenforcetxop(sc->sc_ah, 0);
5460 * Re-enable rx framework.
5462 if (ath_startrecv(sc) != 0) {
5463 device_printf(sc->sc_dev,
5464 "%s: unable to restart recv logic\n", __func__);
5470 * Change channels and update the h/w rate map
5471 * if we're switching; e.g. 11a to 11b/g.
5473 ath_chan_change(sc, chan);
5476 * Reset clears the beacon timers; reset them
5479 if (sc->sc_beacons) { /* restart beacons */
5480 #ifdef IEEE80211_SUPPORT_TDMA
5482 ath_tdma_config(sc, NULL);
5485 ath_beacon_config(sc, NULL);
5489 * Re-enable interrupts.
5492 ath_hal_intrset(ah, sc->sc_imask);
5498 sc->sc_inreset_cnt--;
5499 /* XXX only do this if sc_inreset_cnt == 0? */
5500 ath_hal_intrset(ah, sc->sc_imask);
5504 /* XXX ath_start? */
5510 * Periodically recalibrate the PHY to account
5511 * for temperature/environment changes.
5514 ath_calibrate(void *arg)
5516 struct ath_softc *sc = arg;
5517 struct ath_hal *ah = sc->sc_ah;
5518 struct ieee80211com *ic = &sc->sc_ic;
5519 HAL_BOOL longCal, isCalDone = AH_TRUE;
5520 HAL_BOOL aniCal, shortCal = AH_FALSE;
5523 ATH_LOCK_ASSERT(sc);
5526 * Force the hardware awake for ANI work.
5528 ath_power_set_power_state(sc, HAL_PM_AWAKE);
5530 /* Skip trying to do this if we're in reset */
5531 if (sc->sc_inreset_cnt)
5534 if (ic->ic_flags & IEEE80211_F_SCAN) /* defer, off channel */
5536 longCal = (ticks - sc->sc_lastlongcal >= ath_longcalinterval*hz);
5537 aniCal = (ticks - sc->sc_lastani >= ath_anicalinterval*hz/1000);
5538 if (sc->sc_doresetcal)
5539 shortCal = (ticks - sc->sc_lastshortcal >= ath_shortcalinterval*hz/1000);
5541 DPRINTF(sc, ATH_DEBUG_CALIBRATE, "%s: shortCal=%d; longCal=%d; aniCal=%d\n", __func__, shortCal, longCal, aniCal);
5543 sc->sc_stats.ast_ani_cal++;
5544 sc->sc_lastani = ticks;
5545 ath_hal_ani_poll(ah, sc->sc_curchan);
5549 sc->sc_stats.ast_per_cal++;
5550 sc->sc_lastlongcal = ticks;
5551 if (ath_hal_getrfgain(ah) == HAL_RFGAIN_NEED_CHANGE) {
5553 * Rfgain is out of bounds, reset the chip
5554 * to load new gain values.
5556 DPRINTF(sc, ATH_DEBUG_CALIBRATE,
5557 "%s: rfgain change\n", __func__);
5558 sc->sc_stats.ast_per_rfgain++;
5559 sc->sc_resetcal = 0;
5560 sc->sc_doresetcal = AH_TRUE;
5561 taskqueue_enqueue(sc->sc_tq, &sc->sc_resettask);
5562 callout_reset(&sc->sc_cal_ch, 1, ath_calibrate, sc);
5563 ath_power_restore_power_state(sc);
5567 * If this long cal is after an idle period, then
5568 * reset the data collection state so we start fresh.
5570 if (sc->sc_resetcal) {
5571 (void) ath_hal_calreset(ah, sc->sc_curchan);
5572 sc->sc_lastcalreset = ticks;
5573 sc->sc_lastshortcal = ticks;
5574 sc->sc_resetcal = 0;
5575 sc->sc_doresetcal = AH_TRUE;
5579 /* Only call if we're doing a short/long cal, not for ANI calibration */
5580 if (shortCal || longCal) {
5581 isCalDone = AH_FALSE;
5582 if (ath_hal_calibrateN(ah, sc->sc_curchan, longCal, &isCalDone)) {
5585 * Calibrate noise floor data again in case of change.
5587 ath_hal_process_noisefloor(ah);
5590 DPRINTF(sc, ATH_DEBUG_ANY,
5591 "%s: calibration of channel %u failed\n",
5592 __func__, sc->sc_curchan->ic_freq);
5593 sc->sc_stats.ast_per_calfail++;
5596 sc->sc_lastshortcal = ticks;
5601 * Use a shorter interval to potentially collect multiple
5602 * data samples required to complete calibration. Once
5603 * we're told the work is done we drop back to a longer
5604 * interval between requests. We're more aggressive doing
5605 * work when operating as an AP to improve operation right
5608 sc->sc_lastshortcal = ticks;
5609 nextcal = ath_shortcalinterval*hz/1000;
5610 if (sc->sc_opmode != HAL_M_HOSTAP)
5612 sc->sc_doresetcal = AH_TRUE;
5614 /* nextcal should be the shortest time for next event */
5615 nextcal = ath_longcalinterval*hz;
5616 if (sc->sc_lastcalreset == 0)
5617 sc->sc_lastcalreset = sc->sc_lastlongcal;
5618 else if (ticks - sc->sc_lastcalreset >= ath_resetcalinterval*hz)
5619 sc->sc_resetcal = 1; /* setup reset next trip */
5620 sc->sc_doresetcal = AH_FALSE;
5622 /* ANI calibration may occur more often than short/long/resetcal */
5623 if (ath_anicalinterval > 0)
5624 nextcal = MIN(nextcal, ath_anicalinterval*hz/1000);
5627 DPRINTF(sc, ATH_DEBUG_CALIBRATE, "%s: next +%u (%sisCalDone)\n",
5628 __func__, nextcal, isCalDone ? "" : "!");
5629 callout_reset(&sc->sc_cal_ch, nextcal, ath_calibrate, sc);
5631 DPRINTF(sc, ATH_DEBUG_CALIBRATE, "%s: calibration disabled\n",
5633 /* NB: don't rearm timer */
5636 * Restore power state now that we're done.
5638 ath_power_restore_power_state(sc);
5642 ath_scan_start(struct ieee80211com *ic)
5644 struct ath_softc *sc = ic->ic_softc;
5645 struct ath_hal *ah = sc->sc_ah;
5648 /* XXX calibration timer? */
5649 /* XXXGL: is constant ieee80211broadcastaddr a correct choice? */
5652 sc->sc_scanning = 1;
5653 sc->sc_syncbeacon = 0;
5654 rfilt = ath_calcrxfilter(sc);
5658 ath_hal_setrxfilter(ah, rfilt);
5659 ath_hal_setassocid(ah, ieee80211broadcastaddr, 0);
5662 DPRINTF(sc, ATH_DEBUG_STATE, "%s: RX filter 0x%x bssid %s aid 0\n",
5663 __func__, rfilt, ether_sprintf(ieee80211broadcastaddr));
5667 ath_scan_end(struct ieee80211com *ic)
5669 struct ath_softc *sc = ic->ic_softc;
5670 struct ath_hal *ah = sc->sc_ah;
5674 sc->sc_scanning = 0;
5675 rfilt = ath_calcrxfilter(sc);
5679 ath_hal_setrxfilter(ah, rfilt);
5680 ath_hal_setassocid(ah, sc->sc_curbssid, sc->sc_curaid);
5682 ath_hal_process_noisefloor(ah);
5685 DPRINTF(sc, ATH_DEBUG_STATE, "%s: RX filter 0x%x bssid %s aid 0x%x\n",
5686 __func__, rfilt, ether_sprintf(sc->sc_curbssid),
5690 #ifdef ATH_ENABLE_11N
5692 * For now, just do a channel change.
5694 * Later, we'll go through the hard slog of suspending tx/rx, changing rate
5695 * control state and resetting the hardware without dropping frames out
5698 * The unfortunate trouble here is making absolutely sure that the
5699 * channel width change has propagated enough so the hardware
5700 * absolutely isn't handed bogus frames for it's current operating
5701 * mode. (Eg, 40MHz frames in 20MHz mode.) Since TX and RX can and
5702 * does occur in parallel, we need to make certain we've blocked
5703 * any further ongoing TX (and RX, that can cause raw TX)
5704 * before we do this.
5707 ath_update_chw(struct ieee80211com *ic)
5709 struct ath_softc *sc = ic->ic_softc;
5711 DPRINTF(sc, ATH_DEBUG_STATE, "%s: called\n", __func__);
5712 ath_set_channel(ic);
5714 #endif /* ATH_ENABLE_11N */
5717 ath_set_channel(struct ieee80211com *ic)
5719 struct ath_softc *sc = ic->ic_softc;
5722 ath_power_set_power_state(sc, HAL_PM_AWAKE);
5725 (void) ath_chan_set(sc, ic->ic_curchan);
5727 * If we are returning to our bss channel then mark state
5728 * so the next recv'd beacon's tsf will be used to sync the
5729 * beacon timers. Note that since we only hear beacons in
5730 * sta/ibss mode this has no effect in other operating modes.
5733 if (!sc->sc_scanning && ic->ic_curchan == ic->ic_bsschan)
5734 sc->sc_syncbeacon = 1;
5735 ath_power_restore_power_state(sc);
5740 * Walk the vap list and check if there any vap's in RUN state.
5743 ath_isanyrunningvaps(struct ieee80211vap *this)
5745 struct ieee80211com *ic = this->iv_ic;
5746 struct ieee80211vap *vap;
5748 IEEE80211_LOCK_ASSERT(ic);
5750 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
5751 if (vap != this && vap->iv_state >= IEEE80211_S_RUN)
5758 ath_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
5760 struct ieee80211com *ic = vap->iv_ic;
5761 struct ath_softc *sc = ic->ic_softc;
5762 struct ath_vap *avp = ATH_VAP(vap);
5763 struct ath_hal *ah = sc->sc_ah;
5764 struct ieee80211_node *ni = NULL;
5765 int i, error, stamode;
5767 int csa_run_transition = 0;
5768 enum ieee80211_state ostate = vap->iv_state;
5770 static const HAL_LED_STATE leds[] = {
5771 HAL_LED_INIT, /* IEEE80211_S_INIT */
5772 HAL_LED_SCAN, /* IEEE80211_S_SCAN */
5773 HAL_LED_AUTH, /* IEEE80211_S_AUTH */
5774 HAL_LED_ASSOC, /* IEEE80211_S_ASSOC */
5775 HAL_LED_RUN, /* IEEE80211_S_CAC */
5776 HAL_LED_RUN, /* IEEE80211_S_RUN */
5777 HAL_LED_RUN, /* IEEE80211_S_CSA */
5778 HAL_LED_RUN, /* IEEE80211_S_SLEEP */
5781 DPRINTF(sc, ATH_DEBUG_STATE, "%s: %s -> %s\n", __func__,
5782 ieee80211_state_name[ostate],
5783 ieee80211_state_name[nstate]);
5786 * net80211 _should_ have the comlock asserted at this point.
5787 * There are some comments around the calls to vap->iv_newstate
5788 * which indicate that it (newstate) may end up dropping the
5789 * lock. This and the subsequent lock assert check after newstate
5790 * are an attempt to catch these and figure out how/why.
5792 IEEE80211_LOCK_ASSERT(ic);
5794 /* Before we touch the hardware - wake it up */
5797 * If the NIC is in anything other than SLEEP state,
5798 * we need to ensure that self-generated frames are
5799 * set for PWRMGT=0. Otherwise we may end up with
5800 * strange situations.
5802 * XXX TODO: is this actually the case? :-)
5804 if (nstate != IEEE80211_S_SLEEP)
5805 ath_power_setselfgen(sc, HAL_PM_AWAKE);
5808 * Now, wake the thing up.
5810 ath_power_set_power_state(sc, HAL_PM_AWAKE);
5813 * And stop the calibration callout whilst we have
5816 callout_stop(&sc->sc_cal_ch);
5819 if (ostate == IEEE80211_S_CSA && nstate == IEEE80211_S_RUN)
5820 csa_run_transition = 1;
5822 ath_hal_setledstate(ah, leds[nstate]); /* set LED */
5824 if (nstate == IEEE80211_S_SCAN) {
5826 * Scanning: turn off beacon miss and don't beacon.
5827 * Mark beacon state so when we reach RUN state we'll
5828 * [re]setup beacons. Unblock the task q thread so
5829 * deferred interrupt processing is done.
5832 /* Ensure we stay awake during scan */
5834 ath_power_setselfgen(sc, HAL_PM_AWAKE);
5835 ath_power_setpower(sc, HAL_PM_AWAKE);
5839 sc->sc_imask &~ (HAL_INT_SWBA | HAL_INT_BMISS));
5840 sc->sc_imask &= ~(HAL_INT_SWBA | HAL_INT_BMISS);
5842 taskqueue_unblock(sc->sc_tq);
5845 ni = ieee80211_ref_node(vap->iv_bss);
5846 rfilt = ath_calcrxfilter(sc);
5847 stamode = (vap->iv_opmode == IEEE80211_M_STA ||
5848 vap->iv_opmode == IEEE80211_M_AHDEMO ||
5849 vap->iv_opmode == IEEE80211_M_IBSS);
5852 * XXX Dont need to do this (and others) if we've transitioned
5855 if (stamode && nstate == IEEE80211_S_RUN) {
5856 sc->sc_curaid = ni->ni_associd;
5857 IEEE80211_ADDR_COPY(sc->sc_curbssid, ni->ni_bssid);
5858 ath_hal_setassocid(ah, sc->sc_curbssid, sc->sc_curaid);
5860 DPRINTF(sc, ATH_DEBUG_STATE, "%s: RX filter 0x%x bssid %s aid 0x%x\n",
5861 __func__, rfilt, ether_sprintf(sc->sc_curbssid), sc->sc_curaid);
5862 ath_hal_setrxfilter(ah, rfilt);
5864 /* XXX is this to restore keycache on resume? */
5865 if (vap->iv_opmode != IEEE80211_M_STA &&
5866 (vap->iv_flags & IEEE80211_F_PRIVACY)) {
5867 for (i = 0; i < IEEE80211_WEP_NKID; i++)
5868 if (ath_hal_keyisvalid(ah, i))
5869 ath_hal_keysetmac(ah, i, ni->ni_bssid);
5873 * Invoke the parent method to do net80211 work.
5875 error = avp->av_newstate(vap, nstate, arg);
5880 * See above: ensure av_newstate() doesn't drop the lock
5883 IEEE80211_LOCK_ASSERT(ic);
5885 if (nstate == IEEE80211_S_RUN) {
5886 /* NB: collect bss node again, it may have changed */
5887 ieee80211_free_node(ni);
5888 ni = ieee80211_ref_node(vap->iv_bss);
5890 DPRINTF(sc, ATH_DEBUG_STATE,
5891 "%s(RUN): iv_flags 0x%08x bintvl %d bssid %s "
5892 "capinfo 0x%04x chan %d\n", __func__,
5893 vap->iv_flags, ni->ni_intval, ether_sprintf(ni->ni_bssid),
5894 ni->ni_capinfo, ieee80211_chan2ieee(ic, ic->ic_curchan));
5896 switch (vap->iv_opmode) {
5897 #ifdef IEEE80211_SUPPORT_TDMA
5898 case IEEE80211_M_AHDEMO:
5899 if ((vap->iv_caps & IEEE80211_C_TDMA) == 0)
5903 case IEEE80211_M_HOSTAP:
5904 case IEEE80211_M_IBSS:
5905 case IEEE80211_M_MBSS:
5907 * Allocate and setup the beacon frame.
5909 * Stop any previous beacon DMA. This may be
5910 * necessary, for example, when an ibss merge
5911 * causes reconfiguration; there will be a state
5912 * transition from RUN->RUN that means we may
5913 * be called with beacon transmission active.
5915 ath_hal_stoptxdma(ah, sc->sc_bhalq);
5917 error = ath_beacon_alloc(sc, ni);
5921 * If joining an adhoc network defer beacon timer
5922 * configuration to the next beacon frame so we
5923 * have a current TSF to use. Otherwise we're
5924 * starting an ibss/bss so there's no need to delay;
5925 * if this is the first vap moving to RUN state, then
5926 * beacon state needs to be [re]configured.
5928 if (vap->iv_opmode == IEEE80211_M_IBSS &&
5929 ni->ni_tstamp.tsf != 0) {
5930 sc->sc_syncbeacon = 1;
5931 } else if (!sc->sc_beacons) {
5932 #ifdef IEEE80211_SUPPORT_TDMA
5933 if (vap->iv_caps & IEEE80211_C_TDMA)
5934 ath_tdma_config(sc, vap);
5937 ath_beacon_config(sc, vap);
5941 case IEEE80211_M_STA:
5943 * Defer beacon timer configuration to the next
5944 * beacon frame so we have a current TSF to use
5945 * (any TSF collected when scanning is likely old).
5946 * However if it's due to a CSA -> RUN transition,
5947 * force a beacon update so we pick up a lack of
5948 * beacons from an AP in CAC and thus force a
5951 * And, there's also corner cases here where
5952 * after a scan, the AP may have disappeared.
5953 * In that case, we may not receive an actual
5954 * beacon to update the beacon timer and thus we
5955 * won't get notified of the missing beacons.
5957 if (ostate != IEEE80211_S_RUN &&
5958 ostate != IEEE80211_S_SLEEP) {
5959 DPRINTF(sc, ATH_DEBUG_BEACON,
5960 "%s: STA; syncbeacon=1\n", __func__);
5961 sc->sc_syncbeacon = 1;
5963 if (csa_run_transition)
5964 ath_beacon_config(sc, vap);
5969 * Reconfigure beacons during reset; as otherwise
5970 * we won't get the beacon timers reprogrammed
5971 * after a reset and thus we won't pick up a
5972 * beacon miss interrupt.
5974 * Hopefully we'll see a beacon before the BMISS
5975 * timer fires (too often), leading to a STA
5981 case IEEE80211_M_MONITOR:
5983 * Monitor mode vaps have only INIT->RUN and RUN->RUN
5984 * transitions so we must re-enable interrupts here to
5985 * handle the case of a single monitor mode vap.
5987 ath_hal_intrset(ah, sc->sc_imask);
5989 case IEEE80211_M_WDS:
5995 * Let the hal process statistics collected during a
5996 * scan so it can provide calibrated noise floor data.
5998 ath_hal_process_noisefloor(ah);
6000 * Reset rssi stats; maybe not the best place...
6002 sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
6003 sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
6004 sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
6007 * Force awake for RUN mode.
6010 ath_power_setselfgen(sc, HAL_PM_AWAKE);
6011 ath_power_setpower(sc, HAL_PM_AWAKE);
6014 * Finally, start any timers and the task q thread
6015 * (in case we didn't go through SCAN state).
6017 if (ath_longcalinterval != 0) {
6018 /* start periodic recalibration timer */
6019 callout_reset(&sc->sc_cal_ch, 1, ath_calibrate, sc);
6021 DPRINTF(sc, ATH_DEBUG_CALIBRATE,
6022 "%s: calibration disabled\n", __func__);
6026 taskqueue_unblock(sc->sc_tq);
6027 } else if (nstate == IEEE80211_S_INIT) {
6029 * If there are no vaps left in RUN state then
6030 * shutdown host/driver operation:
6031 * o disable interrupts
6032 * o disable the task queue thread
6033 * o mark beacon processing as stopped
6035 if (!ath_isanyrunningvaps(vap)) {
6036 sc->sc_imask &= ~(HAL_INT_SWBA | HAL_INT_BMISS);
6037 /* disable interrupts */
6038 ath_hal_intrset(ah, sc->sc_imask &~ HAL_INT_GLOBAL);
6039 taskqueue_block(sc->sc_tq);
6042 #ifdef IEEE80211_SUPPORT_TDMA
6043 ath_hal_setcca(ah, AH_TRUE);
6045 } else if (nstate == IEEE80211_S_SLEEP) {
6046 /* We're going to sleep, so transition appropriately */
6047 /* For now, only do this if we're a single STA vap */
6048 if (sc->sc_nvaps == 1 &&
6049 vap->iv_opmode == IEEE80211_M_STA) {
6050 DPRINTF(sc, ATH_DEBUG_BEACON, "%s: syncbeacon=%d\n", __func__, sc->sc_syncbeacon);
6053 * Always at least set the self-generated
6054 * frame config to set PWRMGT=1.
6056 ath_power_setselfgen(sc, HAL_PM_NETWORK_SLEEP);
6059 * If we're not syncing beacons, transition
6062 * We stay awake if syncbeacon > 0 in case
6063 * we need to listen for some beacons otherwise
6064 * our beacon timer config may be wrong.
6066 if (sc->sc_syncbeacon == 0) {
6067 ath_power_setpower(sc, HAL_PM_NETWORK_SLEEP);
6073 ieee80211_free_node(ni);
6076 * Restore the power state - either to what it was, or
6077 * to network_sleep if it's alright.
6080 ath_power_restore_power_state(sc);
6086 * Allocate a key cache slot to the station so we can
6087 * setup a mapping from key index to node. The key cache
6088 * slot is needed for managing antenna state and for
6089 * compression when stations do not use crypto. We do
6090 * it uniliaterally here; if crypto is employed this slot
6091 * will be reassigned.
6094 ath_setup_stationkey(struct ieee80211_node *ni)
6096 struct ieee80211vap *vap = ni->ni_vap;
6097 struct ath_softc *sc = vap->iv_ic->ic_softc;
6098 ieee80211_keyix keyix, rxkeyix;
6100 /* XXX should take a locked ref to vap->iv_bss */
6101 if (!ath_key_alloc(vap, &ni->ni_ucastkey, &keyix, &rxkeyix)) {
6103 * Key cache is full; we'll fall back to doing
6104 * the more expensive lookup in software. Note
6105 * this also means no h/w compression.
6107 /* XXX msg+statistic */
6110 ni->ni_ucastkey.wk_keyix = keyix;
6111 ni->ni_ucastkey.wk_rxkeyix = rxkeyix;
6112 /* NB: must mark device key to get called back on delete */
6113 ni->ni_ucastkey.wk_flags |= IEEE80211_KEY_DEVKEY;
6114 IEEE80211_ADDR_COPY(ni->ni_ucastkey.wk_macaddr, ni->ni_macaddr);
6115 /* NB: this will create a pass-thru key entry */
6116 ath_keyset(sc, vap, &ni->ni_ucastkey, vap->iv_bss);
6121 * Setup driver-specific state for a newly associated node.
6122 * Note that we're called also on a re-associate, the isnew
6123 * param tells us if this is the first time or not.
6126 ath_newassoc(struct ieee80211_node *ni, int isnew)
6128 struct ath_node *an = ATH_NODE(ni);
6129 struct ieee80211vap *vap = ni->ni_vap;
6130 struct ath_softc *sc = vap->iv_ic->ic_softc;
6131 const struct ieee80211_txparam *tp = ni->ni_txparms;
6133 an->an_mcastrix = ath_tx_findrix(sc, tp->mcastrate);
6134 an->an_mgmtrix = ath_tx_findrix(sc, tp->mgmtrate);
6136 DPRINTF(sc, ATH_DEBUG_NODE, "%s: %6D: reassoc; isnew=%d, is_powersave=%d\n",
6141 an->an_is_powersave);
6144 ath_rate_newassoc(sc, an, isnew);
6145 ATH_NODE_UNLOCK(an);
6148 (vap->iv_flags & IEEE80211_F_PRIVACY) == 0 && sc->sc_hasclrkey &&
6149 ni->ni_ucastkey.wk_keyix == IEEE80211_KEYIX_NONE)
6150 ath_setup_stationkey(ni);
6153 * If we're reassociating, make sure that any paused queues
6156 * Now, we may hvae frames in the hardware queue for this node.
6157 * So if we are reassociating and there are frames in the queue,
6158 * we need to go through the cleanup path to ensure that they're
6159 * marked as non-aggregate.
6162 DPRINTF(sc, ATH_DEBUG_NODE,
6163 "%s: %6D: reassoc; is_powersave=%d\n",
6167 an->an_is_powersave);
6169 /* XXX for now, we can't hold the lock across assoc */
6170 ath_tx_node_reassoc(sc, an);
6172 /* XXX for now, we can't hold the lock across wakeup */
6173 if (an->an_is_powersave)
6174 ath_tx_node_wakeup(sc, an);
6179 ath_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *reg,
6180 int nchans, struct ieee80211_channel chans[])
6182 struct ath_softc *sc = ic->ic_softc;
6183 struct ath_hal *ah = sc->sc_ah;
6186 DPRINTF(sc, ATH_DEBUG_REGDOMAIN,
6187 "%s: rd %u cc %u location %c%s\n",
6188 __func__, reg->regdomain, reg->country, reg->location,
6189 reg->ecm ? " ecm" : "");
6191 status = ath_hal_set_channels(ah, chans, nchans,
6192 reg->country, reg->regdomain);
6193 if (status != HAL_OK) {
6194 DPRINTF(sc, ATH_DEBUG_REGDOMAIN, "%s: failed, status %u\n",
6196 return EINVAL; /* XXX */
6203 ath_getradiocaps(struct ieee80211com *ic,
6204 int maxchans, int *nchans, struct ieee80211_channel chans[])
6206 struct ath_softc *sc = ic->ic_softc;
6207 struct ath_hal *ah = sc->sc_ah;
6209 DPRINTF(sc, ATH_DEBUG_REGDOMAIN, "%s: use rd %u cc %d\n",
6210 __func__, SKU_DEBUG, CTRY_DEFAULT);
6212 /* XXX check return */
6213 (void) ath_hal_getchannels(ah, chans, maxchans, nchans,
6214 HAL_MODE_ALL, CTRY_DEFAULT, SKU_DEBUG, AH_TRUE);
6219 ath_getchannels(struct ath_softc *sc)
6221 struct ieee80211com *ic = &sc->sc_ic;
6222 struct ath_hal *ah = sc->sc_ah;
6226 * Collect channel set based on EEPROM contents.
6228 status = ath_hal_init_channels(ah, ic->ic_channels, IEEE80211_CHAN_MAX,
6229 &ic->ic_nchans, HAL_MODE_ALL, CTRY_DEFAULT, SKU_NONE, AH_TRUE);
6230 if (status != HAL_OK) {
6231 device_printf(sc->sc_dev,
6232 "%s: unable to collect channel list from hal, status %d\n",
6236 (void) ath_hal_getregdomain(ah, &sc->sc_eerd);
6237 ath_hal_getcountrycode(ah, &sc->sc_eecc); /* NB: cannot fail */
6238 /* XXX map Atheros sku's to net80211 SKU's */
6239 /* XXX net80211 types too small */
6240 ic->ic_regdomain.regdomain = (uint16_t) sc->sc_eerd;
6241 ic->ic_regdomain.country = (uint16_t) sc->sc_eecc;
6242 ic->ic_regdomain.isocc[0] = ' '; /* XXX don't know */
6243 ic->ic_regdomain.isocc[1] = ' ';
6245 ic->ic_regdomain.ecm = 1;
6246 ic->ic_regdomain.location = 'I';
6248 DPRINTF(sc, ATH_DEBUG_REGDOMAIN,
6249 "%s: eeprom rd %u cc %u (mapped rd %u cc %u) location %c%s\n",
6250 __func__, sc->sc_eerd, sc->sc_eecc,
6251 ic->ic_regdomain.regdomain, ic->ic_regdomain.country,
6252 ic->ic_regdomain.location, ic->ic_regdomain.ecm ? " ecm" : "");
6257 ath_rate_setup(struct ath_softc *sc, u_int mode)
6259 struct ath_hal *ah = sc->sc_ah;
6260 const HAL_RATE_TABLE *rt;
6263 case IEEE80211_MODE_11A:
6264 rt = ath_hal_getratetable(ah, HAL_MODE_11A);
6266 case IEEE80211_MODE_HALF:
6267 rt = ath_hal_getratetable(ah, HAL_MODE_11A_HALF_RATE);
6269 case IEEE80211_MODE_QUARTER:
6270 rt = ath_hal_getratetable(ah, HAL_MODE_11A_QUARTER_RATE);
6272 case IEEE80211_MODE_11B:
6273 rt = ath_hal_getratetable(ah, HAL_MODE_11B);
6275 case IEEE80211_MODE_11G:
6276 rt = ath_hal_getratetable(ah, HAL_MODE_11G);
6278 case IEEE80211_MODE_TURBO_A:
6279 rt = ath_hal_getratetable(ah, HAL_MODE_108A);
6281 case IEEE80211_MODE_TURBO_G:
6282 rt = ath_hal_getratetable(ah, HAL_MODE_108G);
6284 case IEEE80211_MODE_STURBO_A:
6285 rt = ath_hal_getratetable(ah, HAL_MODE_TURBO);
6287 case IEEE80211_MODE_11NA:
6288 rt = ath_hal_getratetable(ah, HAL_MODE_11NA_HT20);
6290 case IEEE80211_MODE_11NG:
6291 rt = ath_hal_getratetable(ah, HAL_MODE_11NG_HT20);
6294 DPRINTF(sc, ATH_DEBUG_ANY, "%s: invalid mode %u\n",
6298 sc->sc_rates[mode] = rt;
6299 return (rt != NULL);
6303 ath_setcurmode(struct ath_softc *sc, enum ieee80211_phymode mode)
6305 #define N(a) (sizeof(a)/sizeof(a[0]))
6306 /* NB: on/off times from the Atheros NDIS driver, w/ permission */
6307 static const struct {
6308 u_int rate; /* tx/rx 802.11 rate */
6309 u_int16_t timeOn; /* LED on time (ms) */
6310 u_int16_t timeOff; /* LED off time (ms) */
6326 /* XXX half/quarter rates */
6328 const HAL_RATE_TABLE *rt;
6331 memset(sc->sc_rixmap, 0xff, sizeof(sc->sc_rixmap));
6332 rt = sc->sc_rates[mode];
6333 KASSERT(rt != NULL, ("no h/w rate set for phy mode %u", mode));
6334 for (i = 0; i < rt->rateCount; i++) {
6335 uint8_t ieeerate = rt->info[i].dot11Rate & IEEE80211_RATE_VAL;
6336 if (rt->info[i].phy != IEEE80211_T_HT)
6337 sc->sc_rixmap[ieeerate] = i;
6339 sc->sc_rixmap[ieeerate | IEEE80211_RATE_MCS] = i;
6341 memset(sc->sc_hwmap, 0, sizeof(sc->sc_hwmap));
6342 for (i = 0; i < N(sc->sc_hwmap); i++) {
6343 if (i >= rt->rateCount) {
6344 sc->sc_hwmap[i].ledon = (500 * hz) / 1000;
6345 sc->sc_hwmap[i].ledoff = (130 * hz) / 1000;
6348 sc->sc_hwmap[i].ieeerate =
6349 rt->info[i].dot11Rate & IEEE80211_RATE_VAL;
6350 if (rt->info[i].phy == IEEE80211_T_HT)
6351 sc->sc_hwmap[i].ieeerate |= IEEE80211_RATE_MCS;
6352 sc->sc_hwmap[i].txflags = IEEE80211_RADIOTAP_F_DATAPAD;
6353 if (rt->info[i].shortPreamble ||
6354 rt->info[i].phy == IEEE80211_T_OFDM)
6355 sc->sc_hwmap[i].txflags |= IEEE80211_RADIOTAP_F_SHORTPRE;
6356 sc->sc_hwmap[i].rxflags = sc->sc_hwmap[i].txflags;
6357 for (j = 0; j < N(blinkrates)-1; j++)
6358 if (blinkrates[j].rate == sc->sc_hwmap[i].ieeerate)
6360 /* NB: this uses the last entry if the rate isn't found */
6361 /* XXX beware of overlow */
6362 sc->sc_hwmap[i].ledon = (blinkrates[j].timeOn * hz) / 1000;
6363 sc->sc_hwmap[i].ledoff = (blinkrates[j].timeOff * hz) / 1000;
6365 sc->sc_currates = rt;
6366 sc->sc_curmode = mode;
6368 * All protection frames are transmited at 2Mb/s for
6369 * 11g, otherwise at 1Mb/s.
6371 if (mode == IEEE80211_MODE_11G)
6372 sc->sc_protrix = ath_tx_findrix(sc, 2*2);
6374 sc->sc_protrix = ath_tx_findrix(sc, 2*1);
6375 /* NB: caller is responsible for resetting rate control state */
6380 ath_watchdog(void *arg)
6382 struct ath_softc *sc = arg;
6383 struct ieee80211com *ic = &sc->sc_ic;
6386 ATH_LOCK_ASSERT(sc);
6388 if (sc->sc_wd_timer != 0 && --sc->sc_wd_timer == 0) {
6391 ath_power_set_power_state(sc, HAL_PM_AWAKE);
6393 if (ath_hal_gethangstate(sc->sc_ah, 0xffff, &hangs) &&
6395 device_printf(sc->sc_dev, "%s hang detected (0x%x)\n",
6396 hangs & 0xff ? "bb" : "mac", hangs);
6398 device_printf(sc->sc_dev, "device timeout\n");
6400 counter_u64_add(ic->ic_oerrors, 1);
6401 sc->sc_stats.ast_watchdog++;
6403 ath_power_restore_power_state(sc);
6407 * We can't hold the lock across the ath_reset() call.
6409 * And since this routine can't hold a lock and sleep,
6410 * do the reset deferred.
6413 taskqueue_enqueue(sc->sc_tq, &sc->sc_resettask);
6416 callout_schedule(&sc->sc_wd_ch, hz);
6420 * Fetch the rate control statistics for the given node.
6423 ath_ioctl_ratestats(struct ath_softc *sc, struct ath_rateioctl *rs)
6425 struct ath_node *an;
6426 struct ieee80211com *ic = &sc->sc_ic;
6427 struct ieee80211_node *ni;
6430 /* Perform a lookup on the given node */
6431 ni = ieee80211_find_node(&ic->ic_sta, rs->is_u.macaddr);
6437 /* Lock the ath_node */
6441 /* Fetch the rate control stats for this node */
6442 error = ath_rate_fetch_node_stats(sc, an, rs);
6444 /* No matter what happens here, just drop through */
6446 /* Unlock the ath_node */
6447 ATH_NODE_UNLOCK(an);
6449 /* Unref the node */
6450 ieee80211_node_decref(ni);
6458 * Diagnostic interface to the HAL. This is used by various
6459 * tools to do things like retrieve register contents for
6460 * debugging. The mechanism is intentionally opaque so that
6461 * it can change frequently w/o concern for compatiblity.
6464 ath_ioctl_diag(struct ath_softc *sc, struct ath_diag *ad)
6466 struct ath_hal *ah = sc->sc_ah;
6467 u_int id = ad->ad_id & ATH_DIAG_ID;
6468 void *indata = NULL;
6469 void *outdata = NULL;
6470 u_int32_t insize = ad->ad_in_size;
6471 u_int32_t outsize = ad->ad_out_size;
6474 if (ad->ad_id & ATH_DIAG_IN) {
6478 indata = malloc(insize, M_TEMP, M_NOWAIT);
6479 if (indata == NULL) {
6483 error = copyin(ad->ad_in_data, indata, insize);
6487 if (ad->ad_id & ATH_DIAG_DYN) {
6489 * Allocate a buffer for the results (otherwise the HAL
6490 * returns a pointer to a buffer where we can read the
6491 * results). Note that we depend on the HAL leaving this
6492 * pointer for us to use below in reclaiming the buffer;
6493 * may want to be more defensive.
6495 outdata = malloc(outsize, M_TEMP, M_NOWAIT);
6496 if (outdata == NULL) {
6504 if (id != HAL_DIAG_REGS)
6505 ath_power_set_power_state(sc, HAL_PM_AWAKE);
6508 if (ath_hal_getdiagstate(ah, id, indata, insize, &outdata, &outsize)) {
6509 if (outsize < ad->ad_out_size)
6510 ad->ad_out_size = outsize;
6511 if (outdata != NULL)
6512 error = copyout(outdata, ad->ad_out_data,
6519 if (id != HAL_DIAG_REGS)
6520 ath_power_restore_power_state(sc);
6524 if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL)
6525 free(indata, M_TEMP);
6526 if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL)
6527 free(outdata, M_TEMP);
6530 #endif /* ATH_DIAGAPI */
6533 ath_parent(struct ieee80211com *ic)
6535 struct ath_softc *sc = ic->ic_softc;
6536 int error = EDOOFUS;
6539 if (ic->ic_nrunning > 0) {
6541 * To avoid rescanning another access point,
6542 * do not call ath_init() here. Instead,
6543 * only reflect promisc mode settings.
6545 if (sc->sc_running) {
6546 ath_power_set_power_state(sc, HAL_PM_AWAKE);
6548 ath_power_restore_power_state(sc);
6549 } else if (!sc->sc_invalid) {
6551 * Beware of being called during attach/detach
6552 * to reset promiscuous mode. In that case we
6553 * will still be marked UP but not RUNNING.
6554 * However trying to re-init the interface
6555 * is the wrong thing to do as we've already
6556 * torn down much of our state. There's
6557 * probably a better way to deal with this.
6559 error = ath_init(sc);
6563 if (!sc->sc_invalid)
6564 ath_power_setpower(sc, HAL_PM_FULL_SLEEP);
6569 #ifdef ATH_TX99_DIAG
6570 if (sc->sc_tx99 != NULL)
6571 sc->sc_tx99->start(sc->sc_tx99);
6574 ieee80211_start_all(ic);
6579 ath_ioctl(struct ieee80211com *ic, u_long cmd, void *data)
6581 struct ifreq *ifr = data;
6582 struct ath_softc *sc = ic->ic_softc;
6585 case SIOCGATHSTATS: {
6586 struct ieee80211vap *vap;
6588 const HAL_RATE_TABLE *rt;
6590 /* NB: embed these numbers to get a consistent view */
6591 sc->sc_stats.ast_tx_packets = 0;
6592 sc->sc_stats.ast_rx_packets = 0;
6593 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
6595 sc->sc_stats.ast_tx_packets += ifp->if_get_counter(ifp,
6596 IFCOUNTER_OPACKETS);
6597 sc->sc_stats.ast_rx_packets += ifp->if_get_counter(ifp,
6598 IFCOUNTER_IPACKETS);
6600 sc->sc_stats.ast_tx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgtxrssi);
6601 sc->sc_stats.ast_rx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgrssi);
6602 #ifdef IEEE80211_SUPPORT_TDMA
6603 sc->sc_stats.ast_tdma_tsfadjp = TDMA_AVG(sc->sc_avgtsfdeltap);
6604 sc->sc_stats.ast_tdma_tsfadjm = TDMA_AVG(sc->sc_avgtsfdeltam);
6606 rt = sc->sc_currates;
6607 sc->sc_stats.ast_tx_rate =
6608 rt->info[sc->sc_txrix].dot11Rate &~ IEEE80211_RATE_BASIC;
6609 if (rt->info[sc->sc_txrix].phy & IEEE80211_T_HT)
6610 sc->sc_stats.ast_tx_rate |= IEEE80211_RATE_MCS;
6611 return copyout(&sc->sc_stats,
6612 ifr->ifr_data, sizeof (sc->sc_stats));
6614 case SIOCGATHAGSTATS:
6615 return copyout(&sc->sc_aggr_stats,
6616 ifr->ifr_data, sizeof (sc->sc_aggr_stats));
6617 case SIOCZATHSTATS: {
6620 error = priv_check(curthread, PRIV_DRIVER);
6622 memset(&sc->sc_stats, 0, sizeof(sc->sc_stats));
6623 memset(&sc->sc_aggr_stats, 0,
6624 sizeof(sc->sc_aggr_stats));
6625 memset(&sc->sc_intr_stats, 0,
6626 sizeof(sc->sc_intr_stats));
6632 return (ath_ioctl_diag(sc, data));
6633 case SIOCGATHPHYERR:
6634 return (ath_ioctl_phyerr(sc, data));
6636 case SIOCGATHSPECTRAL:
6637 return (ath_ioctl_spectral(sc, data));
6638 case SIOCGATHNODERATESTATS:
6639 return (ath_ioctl_ratestats(sc, data));
6646 * Announce various information on device/driver attach.
6649 ath_announce(struct ath_softc *sc)
6651 struct ath_hal *ah = sc->sc_ah;
6653 device_printf(sc->sc_dev, "AR%s mac %d.%d RF%s phy %d.%d\n",
6654 ath_hal_mac_name(ah), ah->ah_macVersion, ah->ah_macRev,
6655 ath_hal_rf_name(ah), ah->ah_phyRev >> 4, ah->ah_phyRev & 0xf);
6656 device_printf(sc->sc_dev, "2GHz radio: 0x%.4x; 5GHz radio: 0x%.4x\n",
6657 ah->ah_analog2GhzRev, ah->ah_analog5GhzRev);
6660 for (i = 0; i <= WME_AC_VO; i++) {
6661 struct ath_txq *txq = sc->sc_ac2q[i];
6662 device_printf(sc->sc_dev,
6663 "Use hw queue %u for %s traffic\n",
6664 txq->axq_qnum, ieee80211_wme_acnames[i]);
6666 device_printf(sc->sc_dev, "Use hw queue %u for CAB traffic\n",
6667 sc->sc_cabq->axq_qnum);
6668 device_printf(sc->sc_dev, "Use hw queue %u for beacons\n",
6671 if (ath_rxbuf != ATH_RXBUF)
6672 device_printf(sc->sc_dev, "using %u rx buffers\n", ath_rxbuf);
6673 if (ath_txbuf != ATH_TXBUF)
6674 device_printf(sc->sc_dev, "using %u tx buffers\n", ath_txbuf);
6675 if (sc->sc_mcastkey && bootverbose)
6676 device_printf(sc->sc_dev, "using multicast key search\n");
6680 ath_dfs_tasklet(void *p, int npending)
6682 struct ath_softc *sc = (struct ath_softc *) p;
6683 struct ieee80211com *ic = &sc->sc_ic;
6686 * If previous processing has found a radar event,
6687 * signal this to the net80211 layer to begin DFS
6690 if (ath_dfs_process_radar_event(sc, sc->sc_curchan)) {
6691 /* DFS event found, initiate channel change */
6693 * XXX doesn't currently tell us whether the event
6694 * XXX was found in the primary or extension
6698 ieee80211_dfs_notify_radar(ic, sc->sc_curchan);
6699 IEEE80211_UNLOCK(ic);
6704 * Enable/disable power save. This must be called with
6705 * no TX driver locks currently held, so it should only
6706 * be called from the RX path (which doesn't hold any
6710 ath_node_powersave(struct ieee80211_node *ni, int enable)
6713 struct ath_node *an = ATH_NODE(ni);
6714 struct ieee80211com *ic = ni->ni_ic;
6715 struct ath_softc *sc = ic->ic_softc;
6716 struct ath_vap *avp = ATH_VAP(ni->ni_vap);
6718 /* XXX and no TXQ locks should be held here */
6720 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE, "%s: %6D: enable=%d\n",
6726 /* Suspend or resume software queue handling */
6728 ath_tx_node_sleep(sc, an);
6730 ath_tx_node_wakeup(sc, an);
6732 /* Update net80211 state */
6733 avp->av_node_ps(ni, enable);
6735 struct ath_vap *avp = ATH_VAP(ni->ni_vap);
6737 /* Update net80211 state */
6738 avp->av_node_ps(ni, enable);
6739 #endif/* ATH_SW_PSQ */
6743 * Notification from net80211 that the powersave queue state has
6746 * Since the software queue also may have some frames:
6748 * + if the node software queue has frames and the TID state
6749 * is 0, we set the TIM;
6750 * + if the node and the stack are both empty, we clear the TIM bit.
6751 * + If the stack tries to set the bit, always set it.
6752 * + If the stack tries to clear the bit, only clear it if the
6753 * software queue in question is also cleared.
6755 * TODO: this is called during node teardown; so let's ensure this
6756 * is all correctly handled and that the TIM bit is cleared.
6757 * It may be that the node flush is called _AFTER_ the net80211
6758 * stack clears the TIM.
6760 * Here is the racy part. Since it's possible >1 concurrent,
6761 * overlapping TXes will appear complete with a TX completion in
6762 * another thread, it's possible that the concurrent TIM calls will
6763 * clash. We can't hold the node lock here because setting the
6764 * TIM grabs the net80211 comlock and this may cause a LOR.
6765 * The solution is either to totally serialise _everything_ at
6766 * this point (ie, all TX, completion and any reset/flush go into
6767 * one taskqueue) or a new "ath TIM lock" needs to be created that
6768 * just wraps the driver state change and this call to avp->av_set_tim().
6770 * The same race exists in the net80211 power save queue handling
6771 * as well. Since multiple transmitting threads may queue frames
6772 * into the driver, as well as ps-poll and the driver transmitting
6773 * frames (and thus clearing the psq), it's quite possible that
6774 * a packet entering the PSQ and a ps-poll being handled will
6775 * race, causing the TIM to be cleared and not re-set.
6778 ath_node_set_tim(struct ieee80211_node *ni, int enable)
6781 struct ieee80211com *ic = ni->ni_ic;
6782 struct ath_softc *sc = ic->ic_softc;
6783 struct ath_node *an = ATH_NODE(ni);
6784 struct ath_vap *avp = ATH_VAP(ni->ni_vap);
6788 an->an_stack_psq = enable;
6791 * This will get called for all operating modes,
6792 * even if avp->av_set_tim is unset.
6793 * It's currently set for hostap/ibss modes; but
6794 * the same infrastructure is used for both STA
6795 * and AP/IBSS node power save.
6797 if (avp->av_set_tim == NULL) {
6803 * If setting the bit, always set it here.
6804 * If clearing the bit, only clear it if the
6805 * software queue is also empty.
6807 * If the node has left power save, just clear the TIM
6808 * bit regardless of the state of the power save queue.
6810 * XXX TODO: although atomics are used, it's quite possible
6811 * that a race will occur between this and setting/clearing
6812 * in another thread. TX completion will occur always in
6813 * one thread, however setting/clearing the TIM bit can come
6814 * from a variety of different process contexts!
6816 if (enable && an->an_tim_set == 1) {
6817 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6818 "%s: %6D: enable=%d, tim_set=1, ignoring\n",
6824 } else if (enable) {
6825 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6826 "%s: %6D: enable=%d, enabling TIM\n",
6833 changed = avp->av_set_tim(ni, enable);
6834 } else if (an->an_swq_depth == 0) {
6836 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6837 "%s: %6D: enable=%d, an_swq_depth == 0, disabling\n",
6844 changed = avp->av_set_tim(ni, enable);
6845 } else if (! an->an_is_powersave) {
6847 * disable regardless; the node isn't in powersave now
6849 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6850 "%s: %6D: enable=%d, an_pwrsave=0, disabling\n",
6857 changed = avp->av_set_tim(ni, enable);
6860 * psq disable, node is currently in powersave, node
6861 * software queue isn't empty, so don't clear the TIM bit
6865 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6866 "%s: %6D: enable=%d, an_swq_depth > 0, ignoring\n",
6876 struct ath_vap *avp = ATH_VAP(ni->ni_vap);
6879 * Some operating modes don't set av_set_tim(), so don't
6882 if (avp->av_set_tim == NULL)
6885 return (avp->av_set_tim(ni, enable));
6886 #endif /* ATH_SW_PSQ */
6890 * Set or update the TIM from the software queue.
6892 * Check the software queue depth before attempting to do lock
6893 * anything; that avoids trying to obtain the lock. Then,
6894 * re-check afterwards to ensure nothing has changed in the
6897 * set: This is designed to be called from the TX path, after
6898 * a frame has been queued; to see if the swq > 0.
6900 * clear: This is designed to be called from the buffer completion point
6901 * (right now it's ath_tx_default_comp()) where the state of
6902 * a software queue has changed.
6904 * It makes sense to place it at buffer free / completion rather
6905 * than after each software queue operation, as there's no real
6906 * point in churning the TIM bit as the last frames in the software
6907 * queue are transmitted. If they fail and we retry them, we'd
6908 * just be setting the TIM bit again anyway.
6911 ath_tx_update_tim(struct ath_softc *sc, struct ieee80211_node *ni,
6915 struct ath_node *an;
6916 struct ath_vap *avp;
6918 /* Don't do this for broadcast/etc frames */
6923 avp = ATH_VAP(ni->ni_vap);
6926 * And for operating modes without the TIM handler set, let's
6929 if (avp->av_set_tim == NULL)
6932 ATH_TX_LOCK_ASSERT(sc);
6935 if (an->an_is_powersave &&
6936 an->an_tim_set == 0 &&
6937 an->an_swq_depth != 0) {
6938 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6939 "%s: %6D: swq_depth>0, tim_set=0, set!\n",
6944 (void) avp->av_set_tim(ni, 1);
6948 * Don't bother grabbing the lock unless the queue is empty.
6950 if (an->an_swq_depth != 0)
6953 if (an->an_is_powersave &&
6954 an->an_stack_psq == 0 &&
6955 an->an_tim_set == 1 &&
6956 an->an_swq_depth == 0) {
6957 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6958 "%s: %6D: swq_depth=0, tim_set=1, psq_set=0,"
6964 (void) avp->av_set_tim(ni, 0);
6969 #endif /* ATH_SW_PSQ */
6973 * Received a ps-poll frame from net80211.
6975 * Here we get a chance to serve out a software-queued frame ourselves
6976 * before we punt it to net80211 to transmit us one itself - either
6977 * because there's traffic in the net80211 psq, or a NULL frame to
6978 * indicate there's nothing else.
6981 ath_node_recv_pspoll(struct ieee80211_node *ni, struct mbuf *m)
6984 struct ath_node *an;
6985 struct ath_vap *avp;
6986 struct ieee80211com *ic = ni->ni_ic;
6987 struct ath_softc *sc = ic->ic_softc;
6995 * Unassociated (temporary node) station.
6997 if (ni->ni_associd == 0)
7001 * We do have an active node, so let's begin looking into it.
7004 avp = ATH_VAP(ni->ni_vap);
7007 * For now, we just call the original ps-poll method.
7008 * Once we're ready to flip this on:
7010 * + Set leak to 1, as no matter what we're going to have
7012 * + Check the software queue and if there's something in it,
7013 * schedule the highest TID thas has traffic from this node.
7014 * Then make sure we schedule the software scheduler to
7015 * run so it picks up said frame.
7017 * That way whatever happens, we'll at least send _a_ frame
7018 * to the given node.
7020 * Again, yes, it's crappy QoS if the node has multiple
7021 * TIDs worth of traffic - but let's get it working first
7022 * before we optimise it.
7024 * Also yes, there's definitely latency here - we're not
7025 * direct dispatching to the hardware in this path (and
7026 * we're likely being called from the packet receive path,
7027 * so going back into TX may be a little hairy!) but again
7028 * I'd like to get this working first before optimising
7035 * Legacy - we're called and the node isn't asleep.
7038 if (! an->an_is_powersave) {
7039 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
7040 "%s: %6D: not in powersave?\n",
7045 avp->av_recv_pspoll(ni, m);
7050 * We're in powersave.
7054 an->an_leak_count = 1;
7057 * Now, if there's no frames in the node, just punt to
7060 * Don't bother checking if the TIM bit is set, we really
7061 * only care if there are any frames here!
7063 if (an->an_swq_depth == 0) {
7065 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
7066 "%s: %6D: SWQ empty; punting to net80211\n",
7070 avp->av_recv_pspoll(ni, m);
7075 * Ok, let's schedule the highest TID that has traffic
7076 * and then schedule something.
7078 for (tid = IEEE80211_TID_SIZE - 1; tid >= 0; tid--) {
7079 struct ath_tid *atid = &an->an_tid[tid];
7083 if (atid->axq_depth == 0)
7085 ath_tx_tid_sched(sc, atid);
7087 * XXX we could do a direct call to the TXQ
7088 * scheduler code here to optimise latency
7089 * at the expense of a REALLY deep callstack.
7092 taskqueue_enqueue(sc->sc_tq, &sc->sc_txqtask);
7093 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
7094 "%s: %6D: leaking frame to TID %d\n",
7105 * XXX nothing in the TIDs at this point? Eek.
7107 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
7108 "%s: %6D: TIDs empty, but ath_node showed traffic?!\n",
7112 avp->av_recv_pspoll(ni, m);
7114 avp->av_recv_pspoll(ni, m);
7115 #endif /* ATH_SW_PSQ */
7118 MODULE_VERSION(if_ath, 1);
7119 MODULE_DEPEND(if_ath, wlan, 1, 1, 1); /* 802.11 media layer */
7120 #if defined(IEEE80211_ALQ) || defined(AH_DEBUG_ALQ) || defined(ATH_DEBUG_ALQ)
7121 MODULE_DEPEND(if_ath, alq, 1, 1, 1);