2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer,
12 * without modification.
13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
15 * redistribution must be conditioned upon including a substantially
16 * similar Disclaimer requirement for further binary redistribution.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
22 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
23 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
24 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
27 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
29 * THE POSSIBILITY OF SUCH DAMAGES.
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
36 * Driver for the Atheros Wireless LAN controller.
38 * This software is derived from work of Atsushi Onoe; his contribution
39 * is greatly appreciated.
45 * This is needed for register operations which are performed
46 * by the driver - eg, calls to ath_hal_gettsf32().
48 * It's also required for any AH_DEBUG checks in here, eg the
49 * module dependencies.
54 #include <sys/param.h>
55 #include <sys/systm.h>
56 #include <sys/sysctl.h>
58 #include <sys/malloc.h>
60 #include <sys/mutex.h>
61 #include <sys/kernel.h>
62 #include <sys/socket.h>
63 #include <sys/sockio.h>
64 #include <sys/errno.h>
65 #include <sys/callout.h>
67 #include <sys/endian.h>
68 #include <sys/kthread.h>
69 #include <sys/taskqueue.h>
71 #include <sys/module.h>
73 #include <sys/smp.h> /* for mp_ncpus */
75 #include <machine/bus.h>
78 #include <net/if_var.h>
79 #include <net/if_dl.h>
80 #include <net/if_media.h>
81 #include <net/if_types.h>
82 #include <net/if_arp.h>
83 #include <net/ethernet.h>
84 #include <net/if_llc.h>
86 #include <net80211/ieee80211_var.h>
87 #include <net80211/ieee80211_regdomain.h>
88 #ifdef IEEE80211_SUPPORT_SUPERG
89 #include <net80211/ieee80211_superg.h>
91 #ifdef IEEE80211_SUPPORT_TDMA
92 #include <net80211/ieee80211_tdma.h>
98 #include <netinet/in.h>
99 #include <netinet/if_ether.h>
102 #include <dev/ath/if_athvar.h>
103 #include <dev/ath/ath_hal/ah_devid.h> /* XXX for softled */
104 #include <dev/ath/ath_hal/ah_diagcodes.h>
106 #include <dev/ath/if_ath_debug.h>
107 #include <dev/ath/if_ath_misc.h>
108 #include <dev/ath/if_ath_tsf.h>
109 #include <dev/ath/if_ath_tx.h>
110 #include <dev/ath/if_ath_sysctl.h>
111 #include <dev/ath/if_ath_led.h>
112 #include <dev/ath/if_ath_keycache.h>
113 #include <dev/ath/if_ath_rx.h>
114 #include <dev/ath/if_ath_rx_edma.h>
115 #include <dev/ath/if_ath_tx_edma.h>
116 #include <dev/ath/if_ath_beacon.h>
117 #include <dev/ath/if_ath_btcoex.h>
118 #include <dev/ath/if_ath_btcoex_mci.h>
119 #include <dev/ath/if_ath_spectral.h>
120 #include <dev/ath/if_ath_lna_div.h>
121 #include <dev/ath/if_athdfs.h>
122 #include <dev/ath/if_ath_ioctl.h>
123 #include <dev/ath/if_ath_descdma.h>
126 #include <dev/ath/ath_tx99/ath_tx99.h>
130 #include <dev/ath/if_ath_alq.h>
134 * Only enable this if you're working on PS-POLL support.
139 * ATH_BCBUF determines the number of vap's that can transmit
140 * beacons and also (currently) the number of vap's that can
141 * have unique mac addresses/bssid. When staggering beacons
142 * 4 is probably a good max as otherwise the beacons become
143 * very closely spaced and there is limited time for cab q traffic
144 * to go out. You can burst beacons instead but that is not good
145 * for stations in power save and at some point you really want
146 * another radio (and channel).
148 * The limit on the number of mac addresses is tied to our use of
149 * the U/L bit and tracking addresses in a byte; it would be
150 * worthwhile to allow more for applications like proxy sta.
152 CTASSERT(ATH_BCBUF <= 8);
154 static struct ieee80211vap *ath_vap_create(struct ieee80211com *,
155 const char [IFNAMSIZ], int, enum ieee80211_opmode, int,
156 const uint8_t [IEEE80211_ADDR_LEN],
157 const uint8_t [IEEE80211_ADDR_LEN]);
158 static void ath_vap_delete(struct ieee80211vap *);
159 static int ath_init(struct ath_softc *);
160 static void ath_stop(struct ath_softc *);
161 static int ath_reset_vap(struct ieee80211vap *, u_long);
162 static int ath_transmit(struct ieee80211com *, struct mbuf *);
163 static int ath_media_change(struct ifnet *);
164 static void ath_watchdog(void *);
165 static void ath_parent(struct ieee80211com *);
166 static void ath_fatal_proc(void *, int);
167 static void ath_bmiss_vap(struct ieee80211vap *);
168 static void ath_bmiss_proc(void *, int);
169 static void ath_key_update_begin(struct ieee80211vap *);
170 static void ath_key_update_end(struct ieee80211vap *);
171 static void ath_update_mcast_hw(struct ath_softc *);
172 static void ath_update_mcast(struct ieee80211com *);
173 static void ath_update_promisc(struct ieee80211com *);
174 static void ath_updateslot(struct ieee80211com *);
175 static void ath_bstuck_proc(void *, int);
176 static void ath_reset_proc(void *, int);
177 static int ath_desc_alloc(struct ath_softc *);
178 static void ath_desc_free(struct ath_softc *);
179 static struct ieee80211_node *ath_node_alloc(struct ieee80211vap *,
180 const uint8_t [IEEE80211_ADDR_LEN]);
181 static void ath_node_cleanup(struct ieee80211_node *);
182 static void ath_node_free(struct ieee80211_node *);
183 static void ath_node_getsignal(const struct ieee80211_node *,
185 static void ath_txq_init(struct ath_softc *sc, struct ath_txq *, int);
186 static struct ath_txq *ath_txq_setup(struct ath_softc*, int qtype, int subtype);
187 static int ath_tx_setup(struct ath_softc *, int, int);
188 static void ath_tx_cleanupq(struct ath_softc *, struct ath_txq *);
189 static void ath_tx_cleanup(struct ath_softc *);
190 static int ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq,
192 static void ath_tx_proc_q0(void *, int);
193 static void ath_tx_proc_q0123(void *, int);
194 static void ath_tx_proc(void *, int);
195 static void ath_txq_sched_tasklet(void *, int);
196 static int ath_chan_set(struct ath_softc *, struct ieee80211_channel *);
197 static void ath_chan_change(struct ath_softc *, struct ieee80211_channel *);
198 static void ath_scan_start(struct ieee80211com *);
199 static void ath_scan_end(struct ieee80211com *);
200 static void ath_set_channel(struct ieee80211com *);
201 #ifdef ATH_ENABLE_11N
202 static void ath_update_chw(struct ieee80211com *);
203 #endif /* ATH_ENABLE_11N */
204 static int ath_set_quiet_ie(struct ieee80211_node *, uint8_t *);
205 static void ath_calibrate(void *);
206 static int ath_newstate(struct ieee80211vap *, enum ieee80211_state, int);
207 static void ath_setup_stationkey(struct ieee80211_node *);
208 static void ath_newassoc(struct ieee80211_node *, int);
209 static int ath_setregdomain(struct ieee80211com *,
210 struct ieee80211_regdomain *, int,
211 struct ieee80211_channel []);
212 static void ath_getradiocaps(struct ieee80211com *, int, int *,
213 struct ieee80211_channel []);
214 static int ath_getchannels(struct ath_softc *);
216 static int ath_rate_setup(struct ath_softc *, u_int mode);
217 static void ath_setcurmode(struct ath_softc *, enum ieee80211_phymode);
219 static void ath_announce(struct ath_softc *);
221 static void ath_dfs_tasklet(void *, int);
222 static void ath_node_powersave(struct ieee80211_node *, int);
223 static int ath_node_set_tim(struct ieee80211_node *, int);
224 static void ath_node_recv_pspoll(struct ieee80211_node *, struct mbuf *);
226 #ifdef IEEE80211_SUPPORT_TDMA
227 #include <dev/ath/if_ath_tdma.h>
230 SYSCTL_DECL(_hw_ath);
232 /* XXX validate sysctl values */
233 static int ath_longcalinterval = 30; /* long cals every 30 secs */
234 SYSCTL_INT(_hw_ath, OID_AUTO, longcal, CTLFLAG_RW, &ath_longcalinterval,
235 0, "long chip calibration interval (secs)");
236 static int ath_shortcalinterval = 100; /* short cals every 100 ms */
237 SYSCTL_INT(_hw_ath, OID_AUTO, shortcal, CTLFLAG_RW, &ath_shortcalinterval,
238 0, "short chip calibration interval (msecs)");
239 static int ath_resetcalinterval = 20*60; /* reset cal state 20 mins */
240 SYSCTL_INT(_hw_ath, OID_AUTO, resetcal, CTLFLAG_RW, &ath_resetcalinterval,
241 0, "reset chip calibration results (secs)");
242 static int ath_anicalinterval = 100; /* ANI calibration - 100 msec */
243 SYSCTL_INT(_hw_ath, OID_AUTO, anical, CTLFLAG_RW, &ath_anicalinterval,
244 0, "ANI calibration (msecs)");
246 int ath_rxbuf = ATH_RXBUF; /* # rx buffers to allocate */
247 SYSCTL_INT(_hw_ath, OID_AUTO, rxbuf, CTLFLAG_RWTUN, &ath_rxbuf,
248 0, "rx buffers allocated");
249 int ath_txbuf = ATH_TXBUF; /* # tx buffers to allocate */
250 SYSCTL_INT(_hw_ath, OID_AUTO, txbuf, CTLFLAG_RWTUN, &ath_txbuf,
251 0, "tx buffers allocated");
252 int ath_txbuf_mgmt = ATH_MGMT_TXBUF; /* # mgmt tx buffers to allocate */
253 SYSCTL_INT(_hw_ath, OID_AUTO, txbuf_mgmt, CTLFLAG_RWTUN, &ath_txbuf_mgmt,
254 0, "tx (mgmt) buffers allocated");
256 int ath_bstuck_threshold = 4; /* max missed beacons */
257 SYSCTL_INT(_hw_ath, OID_AUTO, bstuck, CTLFLAG_RW, &ath_bstuck_threshold,
258 0, "max missed beacon xmits before chip reset");
260 MALLOC_DEFINE(M_ATHDEV, "athdev", "ath driver dma buffers");
263 ath_legacy_attach_comp_func(struct ath_softc *sc)
267 * Special case certain configurations. Note the
268 * CAB queue is handled by these specially so don't
269 * include them when checking the txq setup mask.
271 switch (sc->sc_txqsetup &~ (1<<sc->sc_cabq->axq_qnum)) {
273 TASK_INIT(&sc->sc_txtask, 0, ath_tx_proc_q0, sc);
276 TASK_INIT(&sc->sc_txtask, 0, ath_tx_proc_q0123, sc);
279 TASK_INIT(&sc->sc_txtask, 0, ath_tx_proc, sc);
285 * Set the target power mode.
287 * If this is called during a point in time where
288 * the hardware is being programmed elsewhere, it will
289 * simply store it away and update it when all current
290 * uses of the hardware are completed.
292 * If the chip is going into network sleep or power off, then
293 * we will wait until all uses of the chip are done before
294 * going into network sleep or power off.
296 * If the chip is being programmed full-awake, then immediately
297 * program it full-awake so we can actually stay awake rather than
298 * the chip potentially going to sleep underneath us.
301 _ath_power_setpower(struct ath_softc *sc, int power_state, int selfgen,
302 const char *file, int line)
306 DPRINTF(sc, ATH_DEBUG_PWRSAVE, "%s: (%s:%d) state=%d, refcnt=%d, target=%d, cur=%d\n",
311 sc->sc_powersave_refcnt,
312 sc->sc_target_powerstate,
313 sc->sc_cur_powerstate);
315 sc->sc_target_powerstate = power_state;
318 * Don't program the chip into network sleep if the chip
319 * is being programmed elsewhere.
321 * However, if the chip is being programmed /awake/, force
322 * the chip awake so we stay awake.
324 if ((sc->sc_powersave_refcnt == 0 || power_state == HAL_PM_AWAKE) &&
325 power_state != sc->sc_cur_powerstate) {
326 sc->sc_cur_powerstate = power_state;
327 ath_hal_setpower(sc->sc_ah, power_state);
330 * If the NIC is force-awake, then set the
331 * self-gen frame state appropriately.
333 * If the nic is in network sleep or full-sleep,
334 * we let the above call leave the self-gen
338 sc->sc_cur_powerstate == HAL_PM_AWAKE &&
339 sc->sc_target_selfgen_state != HAL_PM_AWAKE) {
340 ath_hal_setselfgenpower(sc->sc_ah,
341 sc->sc_target_selfgen_state);
347 * Set the current self-generated frames state.
349 * This is separate from the target power mode. The chip may be
350 * awake but the desired state is "sleep", so frames sent to the
351 * destination has PWRMGT=1 in the 802.11 header. The NIC also
352 * needs to know to set PWRMGT=1 in self-generated frames.
355 _ath_power_set_selfgen(struct ath_softc *sc, int power_state, const char *file, int line)
360 DPRINTF(sc, ATH_DEBUG_PWRSAVE, "%s: (%s:%d) state=%d, refcnt=%d\n",
365 sc->sc_target_selfgen_state);
367 sc->sc_target_selfgen_state = power_state;
370 * If the NIC is force-awake, then set the power state.
371 * Network-state and full-sleep will already transition it to
372 * mark self-gen frames as sleeping - and we can't
373 * guarantee the NIC is awake to program the self-gen frame
376 if (sc->sc_cur_powerstate == HAL_PM_AWAKE) {
377 ath_hal_setselfgenpower(sc->sc_ah, power_state);
382 * Set the hardware power mode and take a reference.
384 * This doesn't update the target power mode in the driver;
385 * it just updates the hardware power state.
387 * XXX it should only ever force the hardware awake; it should
388 * never be called to set it asleep.
391 _ath_power_set_power_state(struct ath_softc *sc, int power_state, const char *file, int line)
395 DPRINTF(sc, ATH_DEBUG_PWRSAVE, "%s: (%s:%d) state=%d, refcnt=%d\n",
400 sc->sc_powersave_refcnt);
402 sc->sc_powersave_refcnt++;
405 * Only do the power state change if we're not programming
408 if (power_state != sc->sc_cur_powerstate) {
409 ath_hal_setpower(sc->sc_ah, power_state);
410 sc->sc_cur_powerstate = power_state;
412 * Adjust the self-gen powerstate if appropriate.
414 if (sc->sc_cur_powerstate == HAL_PM_AWAKE &&
415 sc->sc_target_selfgen_state != HAL_PM_AWAKE) {
416 ath_hal_setselfgenpower(sc->sc_ah,
417 sc->sc_target_selfgen_state);
423 * Restore the power save mode to what it once was.
425 * This will decrement the reference counter and once it hits
426 * zero, it'll restore the powersave state.
429 _ath_power_restore_power_state(struct ath_softc *sc, const char *file, int line)
434 DPRINTF(sc, ATH_DEBUG_PWRSAVE, "%s: (%s:%d) refcnt=%d, target state=%d\n",
438 sc->sc_powersave_refcnt,
439 sc->sc_target_powerstate);
441 if (sc->sc_powersave_refcnt == 0)
442 device_printf(sc->sc_dev, "%s: refcnt=0?\n", __func__);
444 sc->sc_powersave_refcnt--;
446 if (sc->sc_powersave_refcnt == 0 &&
447 sc->sc_target_powerstate != sc->sc_cur_powerstate) {
448 sc->sc_cur_powerstate = sc->sc_target_powerstate;
449 ath_hal_setpower(sc->sc_ah, sc->sc_target_powerstate);
453 * Adjust the self-gen powerstate if appropriate.
455 if (sc->sc_cur_powerstate == HAL_PM_AWAKE &&
456 sc->sc_target_selfgen_state != HAL_PM_AWAKE) {
457 ath_hal_setselfgenpower(sc->sc_ah,
458 sc->sc_target_selfgen_state);
464 * Configure the initial HAL configuration values based on bus
465 * specific parameters.
467 * Some PCI IDs and other information may need tweaking.
469 * XXX TODO: ath9k and the Atheros HAL only program comm2g_switch_enable
470 * if BT antenna diversity isn't enabled.
472 * So, let's also figure out how to enable BT diversity for AR9485.
475 ath_setup_hal_config(struct ath_softc *sc, HAL_OPS_CONFIG *ah_config)
477 /* XXX TODO: only for PCI devices? */
479 if (sc->sc_pci_devinfo & (ATH_PCI_CUS198 | ATH_PCI_CUS230)) {
480 ah_config->ath_hal_ext_lna_ctl_gpio = 0x200; /* bit 9 */
481 ah_config->ath_hal_ext_atten_margin_cfg = AH_TRUE;
482 ah_config->ath_hal_min_gainidx = AH_TRUE;
483 ah_config->ath_hal_ant_ctrl_comm2g_switch_enable = 0x000bbb88;
484 /* XXX low_rssi_thresh */
485 /* XXX fast_div_bias */
486 device_printf(sc->sc_dev, "configuring for %s\n",
487 (sc->sc_pci_devinfo & ATH_PCI_CUS198) ?
488 "CUS198" : "CUS230");
491 if (sc->sc_pci_devinfo & ATH_PCI_CUS217)
492 device_printf(sc->sc_dev, "CUS217 card detected\n");
494 if (sc->sc_pci_devinfo & ATH_PCI_CUS252)
495 device_printf(sc->sc_dev, "CUS252 card detected\n");
497 if (sc->sc_pci_devinfo & ATH_PCI_AR9565_1ANT)
498 device_printf(sc->sc_dev, "WB335 1-ANT card detected\n");
500 if (sc->sc_pci_devinfo & ATH_PCI_AR9565_2ANT)
501 device_printf(sc->sc_dev, "WB335 2-ANT card detected\n");
503 if (sc->sc_pci_devinfo & ATH_PCI_BT_ANT_DIV)
504 device_printf(sc->sc_dev,
505 "Bluetooth Antenna Diversity card detected\n");
507 if (sc->sc_pci_devinfo & ATH_PCI_KILLER)
508 device_printf(sc->sc_dev, "Killer Wireless card detected\n");
512 * Some WB335 cards do not support antenna diversity. Since
513 * we use a hardcoded value for AR9565 instead of using the
514 * EEPROM/OTP data, remove the combining feature from
515 * the HW capabilities bitmap.
517 if (sc->sc_pci_devinfo & (ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_AR9565_2ANT)) {
518 if (!(sc->sc_pci_devinfo & ATH9K_PCI_BT_ANT_DIV))
519 pCap->hw_caps &= ~ATH9K_HW_CAP_ANT_DIV_COMB;
522 if (sc->sc_pci_devinfo & ATH9K_PCI_BT_ANT_DIV) {
523 pCap->hw_caps |= ATH9K_HW_CAP_BT_ANT_DIV;
524 device_printf(sc->sc_dev, "Set BT/WLAN RX diversity capability\n");
528 if (sc->sc_pci_devinfo & ATH_PCI_D3_L1_WAR) {
529 ah_config->ath_hal_pcie_waen = 0x0040473b;
530 device_printf(sc->sc_dev, "Enable WAR for ASPM D3/L1\n");
534 if (sc->sc_pci_devinfo & ATH9K_PCI_NO_PLL_PWRSAVE) {
535 ah->config.no_pll_pwrsave = true;
536 device_printf(sc->sc_dev, "Disable PLL PowerSave\n");
543 * Attempt to fetch the MAC address from the kernel environment.
545 * Returns 0, macaddr in macaddr if successful; -1 otherwise.
548 ath_fetch_mac_kenv(struct ath_softc *sc, uint8_t *macaddr)
555 * Fetch from the kenv rather than using hints.
557 * Hints would be nice but the transition to dynamic
558 * hints/kenv doesn't happen early enough for this
559 * to work reliably (eg on anything embedded.)
561 snprintf(devid_str, 32, "hint.%s.%d.macaddr",
562 device_get_name(sc->sc_dev),
563 device_get_unit(sc->sc_dev));
565 if ((local_macstr = kern_getenv(devid_str)) != NULL) {
566 uint32_t tmpmac[ETHER_ADDR_LEN];
570 /* Have a MAC address; should use it */
571 device_printf(sc->sc_dev,
572 "Overriding MAC address from environment: '%s'\n",
575 /* Extract out the MAC address */
576 count = sscanf(local_macstr, "%x%*c%x%*c%x%*c%x%*c%x%*c%x",
577 &tmpmac[0], &tmpmac[1],
578 &tmpmac[2], &tmpmac[3],
579 &tmpmac[4], &tmpmac[5]);
583 for (i = 0; i < ETHER_ADDR_LEN; i++)
584 macaddr[i] = tmpmac[i];
587 freeenv(local_macstr);
596 #define HAL_MODE_HT20 (HAL_MODE_11NG_HT20 | HAL_MODE_11NA_HT20)
597 #define HAL_MODE_HT40 \
598 (HAL_MODE_11NG_HT40PLUS | HAL_MODE_11NG_HT40MINUS | \
599 HAL_MODE_11NA_HT40PLUS | HAL_MODE_11NA_HT40MINUS)
601 ath_attach(u_int16_t devid, struct ath_softc *sc)
603 struct ieee80211com *ic = &sc->sc_ic;
604 struct ath_hal *ah = NULL;
608 int rx_chainmask, tx_chainmask;
609 HAL_OPS_CONFIG ah_config;
611 DPRINTF(sc, ATH_DEBUG_ANY, "%s: devid 0x%x\n", __func__, devid);
614 ic->ic_name = device_get_nameunit(sc->sc_dev);
617 * Configure the initial configuration data.
619 * This is stuff that may be needed early during attach
620 * rather than done via configuration calls later.
622 bzero(&ah_config, sizeof(ah_config));
623 ath_setup_hal_config(sc, &ah_config);
625 ah = ath_hal_attach(devid, sc, sc->sc_st, sc->sc_sh,
626 sc->sc_eepromdata, &ah_config, &status);
628 device_printf(sc->sc_dev,
629 "unable to attach hardware; HAL status %u\n", status);
634 sc->sc_invalid = 0; /* ready to go, enable interrupt handling */
636 sc->sc_debug = ath_debug;
640 * Force the chip awake during setup, just to keep
641 * the HAL/driver power tracking happy.
643 * There are some methods (eg ath_hal_setmac())
644 * that poke the hardware.
647 ath_power_setpower(sc, HAL_PM_AWAKE, 1);
651 * Setup the DMA/EDMA functions based on the current
654 * This is required before the descriptors are allocated.
656 if (ath_hal_hasedma(sc->sc_ah)) {
658 ath_recv_setup_edma(sc);
659 ath_xmit_setup_edma(sc);
661 ath_recv_setup_legacy(sc);
662 ath_xmit_setup_legacy(sc);
665 if (ath_hal_hasmybeacon(sc->sc_ah)) {
666 sc->sc_do_mybeacon = 1;
670 * Check if the MAC has multi-rate retry support.
671 * We do this by trying to setup a fake extended
672 * descriptor. MAC's that don't have support will
673 * return false w/o doing anything. MAC's that do
674 * support it will return true w/o doing anything.
676 sc->sc_mrretry = ath_hal_setupxtxdesc(ah, NULL, 0,0, 0,0, 0,0);
679 * Check if the device has hardware counters for PHY
680 * errors. If so we need to enable the MIB interrupt
681 * so we can act on stat triggers.
683 if (ath_hal_hwphycounters(ah))
687 * Get the hardware key cache size.
689 sc->sc_keymax = ath_hal_keycachesize(ah);
690 if (sc->sc_keymax > ATH_KEYMAX) {
691 device_printf(sc->sc_dev,
692 "Warning, using only %u of %u key cache slots\n",
693 ATH_KEYMAX, sc->sc_keymax);
694 sc->sc_keymax = ATH_KEYMAX;
697 * Reset the key cache since some parts do not
698 * reset the contents on initial power up.
700 for (i = 0; i < sc->sc_keymax; i++)
701 ath_hal_keyreset(ah, i);
704 * Collect the default channel list.
706 error = ath_getchannels(sc);
711 * Setup rate tables for all potential media types.
713 ath_rate_setup(sc, IEEE80211_MODE_11A);
714 ath_rate_setup(sc, IEEE80211_MODE_11B);
715 ath_rate_setup(sc, IEEE80211_MODE_11G);
716 ath_rate_setup(sc, IEEE80211_MODE_TURBO_A);
717 ath_rate_setup(sc, IEEE80211_MODE_TURBO_G);
718 ath_rate_setup(sc, IEEE80211_MODE_STURBO_A);
719 ath_rate_setup(sc, IEEE80211_MODE_11NA);
720 ath_rate_setup(sc, IEEE80211_MODE_11NG);
721 ath_rate_setup(sc, IEEE80211_MODE_HALF);
722 ath_rate_setup(sc, IEEE80211_MODE_QUARTER);
724 /* NB: setup here so ath_rate_update is happy */
725 ath_setcurmode(sc, IEEE80211_MODE_11A);
728 * Allocate TX descriptors and populate the lists.
730 error = ath_desc_alloc(sc);
732 device_printf(sc->sc_dev,
733 "failed to allocate TX descriptors: %d\n", error);
736 error = ath_txdma_setup(sc);
738 device_printf(sc->sc_dev,
739 "failed to allocate TX descriptors: %d\n", error);
744 * Allocate RX descriptors and populate the lists.
746 error = ath_rxdma_setup(sc);
748 device_printf(sc->sc_dev,
749 "failed to allocate RX descriptors: %d\n", error);
753 callout_init_mtx(&sc->sc_cal_ch, &sc->sc_mtx, 0);
754 callout_init_mtx(&sc->sc_wd_ch, &sc->sc_mtx, 0);
756 ATH_TXBUF_LOCK_INIT(sc);
758 sc->sc_tq = taskqueue_create("ath_taskq", M_NOWAIT,
759 taskqueue_thread_enqueue, &sc->sc_tq);
760 taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
761 device_get_nameunit(sc->sc_dev));
763 TASK_INIT(&sc->sc_rxtask, 0, sc->sc_rx.recv_tasklet, sc);
764 TASK_INIT(&sc->sc_bmisstask, 0, ath_bmiss_proc, sc);
765 TASK_INIT(&sc->sc_bstucktask,0, ath_bstuck_proc, sc);
766 TASK_INIT(&sc->sc_resettask,0, ath_reset_proc, sc);
767 TASK_INIT(&sc->sc_txqtask, 0, ath_txq_sched_tasklet, sc);
768 TASK_INIT(&sc->sc_fataltask, 0, ath_fatal_proc, sc);
771 * Allocate hardware transmit queues: one queue for
772 * beacon frames and one data queue for each QoS
773 * priority. Note that the hal handles resetting
774 * these queues at the needed time.
778 sc->sc_bhalq = ath_beaconq_setup(sc);
779 if (sc->sc_bhalq == (u_int) -1) {
780 device_printf(sc->sc_dev,
781 "unable to setup a beacon xmit queue!\n");
785 sc->sc_cabq = ath_txq_setup(sc, HAL_TX_QUEUE_CAB, 0);
786 if (sc->sc_cabq == NULL) {
787 device_printf(sc->sc_dev, "unable to setup CAB xmit queue!\n");
791 /* NB: insure BK queue is the lowest priority h/w queue */
792 if (!ath_tx_setup(sc, WME_AC_BK, HAL_WME_AC_BK)) {
793 device_printf(sc->sc_dev,
794 "unable to setup xmit queue for %s traffic!\n",
795 ieee80211_wme_acnames[WME_AC_BK]);
799 if (!ath_tx_setup(sc, WME_AC_BE, HAL_WME_AC_BE) ||
800 !ath_tx_setup(sc, WME_AC_VI, HAL_WME_AC_VI) ||
801 !ath_tx_setup(sc, WME_AC_VO, HAL_WME_AC_VO)) {
803 * Not enough hardware tx queues to properly do WME;
804 * just punt and assign them all to the same h/w queue.
805 * We could do a better job of this if, for example,
806 * we allocate queues when we switch from station to
809 if (sc->sc_ac2q[WME_AC_VI] != NULL)
810 ath_tx_cleanupq(sc, sc->sc_ac2q[WME_AC_VI]);
811 if (sc->sc_ac2q[WME_AC_BE] != NULL)
812 ath_tx_cleanupq(sc, sc->sc_ac2q[WME_AC_BE]);
813 sc->sc_ac2q[WME_AC_BE] = sc->sc_ac2q[WME_AC_BK];
814 sc->sc_ac2q[WME_AC_VI] = sc->sc_ac2q[WME_AC_BK];
815 sc->sc_ac2q[WME_AC_VO] = sc->sc_ac2q[WME_AC_BK];
819 * Attach the TX completion function.
821 * The non-EDMA chips may have some special case optimisations;
822 * this method gives everyone a chance to attach cleanly.
824 sc->sc_tx.xmit_attach_comp_func(sc);
827 * Setup rate control. Some rate control modules
828 * call back to change the anntena state so expose
829 * the necessary entry points.
830 * XXX maybe belongs in struct ath_ratectrl?
832 sc->sc_setdefantenna = ath_setdefantenna;
833 sc->sc_rc = ath_rate_attach(sc);
834 if (sc->sc_rc == NULL) {
839 /* Attach DFS module */
840 if (! ath_dfs_attach(sc)) {
841 device_printf(sc->sc_dev,
842 "%s: unable to attach DFS\n", __func__);
847 /* Attach spectral module */
848 if (ath_spectral_attach(sc) < 0) {
849 device_printf(sc->sc_dev,
850 "%s: unable to attach spectral\n", __func__);
855 /* Attach bluetooth coexistence module */
856 if (ath_btcoex_attach(sc) < 0) {
857 device_printf(sc->sc_dev,
858 "%s: unable to attach bluetooth coexistence\n", __func__);
863 /* Attach LNA diversity module */
864 if (ath_lna_div_attach(sc) < 0) {
865 device_printf(sc->sc_dev,
866 "%s: unable to attach LNA diversity\n", __func__);
871 /* Start DFS processing tasklet */
872 TASK_INIT(&sc->sc_dfstask, 0, ath_dfs_tasklet, sc);
874 /* Configure LED state */
877 sc->sc_ledon = 0; /* low true */
878 sc->sc_ledidle = (2700*hz)/1000; /* 2.7sec */
879 callout_init(&sc->sc_ledtimer, 1);
882 * Don't setup hardware-based blinking.
884 * Although some NICs may have this configured in the
885 * default reset register values, the user may wish
886 * to alter which pins have which function.
888 * The reference driver attaches the MAC network LED to GPIO1 and
889 * the MAC power LED to GPIO2. However, the DWA-552 cardbus
890 * NIC has these reversed.
892 sc->sc_hardled = (1 == 0);
893 sc->sc_led_net_pin = -1;
894 sc->sc_led_pwr_pin = -1;
896 * Auto-enable soft led processing for IBM cards and for
897 * 5211 minipci cards. Users can also manually enable/disable
898 * support with a sysctl.
900 sc->sc_softled = (devid == AR5212_DEVID_IBM || devid == AR5211_DEVID);
902 ath_hal_setledstate(ah, HAL_LED_INIT);
904 /* XXX not right but it's not used anywhere important */
905 ic->ic_phytype = IEEE80211_T_OFDM;
906 ic->ic_opmode = IEEE80211_M_STA;
908 IEEE80211_C_STA /* station mode */
909 | IEEE80211_C_IBSS /* ibss, nee adhoc, mode */
910 | IEEE80211_C_HOSTAP /* hostap mode */
911 | IEEE80211_C_MONITOR /* monitor mode */
912 | IEEE80211_C_AHDEMO /* adhoc demo mode */
913 | IEEE80211_C_WDS /* 4-address traffic works */
914 | IEEE80211_C_MBSS /* mesh point link mode */
915 | IEEE80211_C_SHPREAMBLE /* short preamble supported */
916 | IEEE80211_C_SHSLOT /* short slot time supported */
917 | IEEE80211_C_WPA /* capable of WPA1+WPA2 */
918 #ifndef ATH_ENABLE_11N
919 | IEEE80211_C_BGSCAN /* capable of bg scanning */
921 | IEEE80211_C_TXFRAG /* handle tx frags */
922 #ifdef ATH_ENABLE_DFS
923 | IEEE80211_C_DFS /* Enable radar detection */
925 | IEEE80211_C_PMGT /* Station side power mgmt */
926 | IEEE80211_C_SWSLEEP
929 * Query the hal to figure out h/w crypto support.
931 if (ath_hal_ciphersupported(ah, HAL_CIPHER_WEP))
932 ic->ic_cryptocaps |= IEEE80211_CRYPTO_WEP;
933 if (ath_hal_ciphersupported(ah, HAL_CIPHER_AES_OCB))
934 ic->ic_cryptocaps |= IEEE80211_CRYPTO_AES_OCB;
935 if (ath_hal_ciphersupported(ah, HAL_CIPHER_AES_CCM))
936 ic->ic_cryptocaps |= IEEE80211_CRYPTO_AES_CCM;
937 if (ath_hal_ciphersupported(ah, HAL_CIPHER_CKIP))
938 ic->ic_cryptocaps |= IEEE80211_CRYPTO_CKIP;
939 if (ath_hal_ciphersupported(ah, HAL_CIPHER_TKIP)) {
940 ic->ic_cryptocaps |= IEEE80211_CRYPTO_TKIP;
942 * Check if h/w does the MIC and/or whether the
943 * separate key cache entries are required to
944 * handle both tx+rx MIC keys.
946 if (ath_hal_ciphersupported(ah, HAL_CIPHER_MIC))
947 ic->ic_cryptocaps |= IEEE80211_CRYPTO_TKIPMIC;
949 * If the h/w supports storing tx+rx MIC keys
950 * in one cache slot automatically enable use.
952 if (ath_hal_hastkipsplit(ah) ||
953 !ath_hal_settkipsplit(ah, AH_FALSE))
956 * If the h/w can do TKIP MIC together with WME then
957 * we use it; otherwise we force the MIC to be done
958 * in software by the net80211 layer.
960 if (ath_hal_haswmetkipmic(ah))
961 sc->sc_wmetkipmic = 1;
963 sc->sc_hasclrkey = ath_hal_ciphersupported(ah, HAL_CIPHER_CLR);
965 * Check for multicast key search support.
967 if (ath_hal_hasmcastkeysearch(sc->sc_ah) &&
968 !ath_hal_getmcastkeysearch(sc->sc_ah)) {
969 ath_hal_setmcastkeysearch(sc->sc_ah, 1);
971 sc->sc_mcastkey = ath_hal_getmcastkeysearch(ah);
973 * Mark key cache slots associated with global keys
974 * as in use. If we knew TKIP was not to be used we
975 * could leave the +32, +64, and +32+64 slots free.
977 for (i = 0; i < IEEE80211_WEP_NKID; i++) {
978 setbit(sc->sc_keymap, i);
979 setbit(sc->sc_keymap, i+64);
980 if (sc->sc_splitmic) {
981 setbit(sc->sc_keymap, i+32);
982 setbit(sc->sc_keymap, i+32+64);
986 * TPC support can be done either with a global cap or
987 * per-packet support. The latter is not available on
988 * all parts. We're a bit pedantic here as all parts
989 * support a global cap.
991 if (ath_hal_hastpc(ah) || ath_hal_hastxpowlimit(ah))
992 ic->ic_caps |= IEEE80211_C_TXPMGT;
995 * Mark WME capability only if we have sufficient
996 * hardware queues to do proper priority scheduling.
998 if (sc->sc_ac2q[WME_AC_BE] != sc->sc_ac2q[WME_AC_BK])
999 ic->ic_caps |= IEEE80211_C_WME;
1001 * Check for misc other capabilities.
1003 if (ath_hal_hasbursting(ah))
1004 ic->ic_caps |= IEEE80211_C_BURST;
1005 sc->sc_hasbmask = ath_hal_hasbssidmask(ah);
1006 sc->sc_hasbmatch = ath_hal_hasbssidmatch(ah);
1007 sc->sc_hastsfadd = ath_hal_hastsfadjust(ah);
1008 sc->sc_rxslink = ath_hal_self_linked_final_rxdesc(ah);
1010 /* XXX TODO: just make this a "store tx/rx timestamp length" operation */
1011 if (ath_hal_get_rx_tsf_prec(ah, &i)) {
1016 device_printf(sc->sc_dev, "RX timestamp: %d bits\n", i);
1018 if (ath_hal_get_tx_tsf_prec(ah, &i)) {
1020 device_printf(sc->sc_dev, "TX timestamp: %d bits\n", i);
1023 sc->sc_hasenforcetxop = ath_hal_hasenforcetxop(ah);
1024 sc->sc_rx_lnamixer = ath_hal_hasrxlnamixer(ah);
1025 sc->sc_hasdivcomb = ath_hal_hasdivantcomb(ah);
1028 * Some WB335 cards do not support antenna diversity. Since
1029 * we use a hardcoded value for AR9565 instead of using the
1030 * EEPROM/OTP data, remove the combining feature from
1031 * the HW capabilities bitmap.
1034 * XXX TODO: check reference driver and ath9k for what to do
1035 * here for WB335. I think we have to actually disable the
1036 * LNA div processing in the HAL and instead use the hard
1037 * coded values; and then use BT diversity.
1039 * .. but also need to setup MCI too for WB335..
1042 if (sc->sc_pci_devinfo & (ATH9K_PCI_AR9565_1ANT | ATH9K_PCI_AR9565_2ANT)) {
1043 device_printf(sc->sc_dev, "%s: WB335: disabling LNA mixer diversity\n",
1045 sc->sc_dolnadiv = 0;
1049 if (ath_hal_hasfastframes(ah))
1050 ic->ic_caps |= IEEE80211_C_FF;
1051 wmodes = ath_hal_getwirelessmodes(ah);
1052 if (wmodes & (HAL_MODE_108G|HAL_MODE_TURBO))
1053 ic->ic_caps |= IEEE80211_C_TURBOP;
1054 #ifdef IEEE80211_SUPPORT_TDMA
1055 if (ath_hal_macversion(ah) > 0x78) {
1056 ic->ic_caps |= IEEE80211_C_TDMA; /* capable of TDMA */
1057 ic->ic_tdma_update = ath_tdma_update;
1062 * TODO: enforce that at least this many frames are available
1063 * in the txbuf list before allowing data frames (raw or
1064 * otherwise) to be transmitted.
1066 sc->sc_txq_data_minfree = 10;
1069 * Shorten this to 64 packets, or 1/4 ath_txbuf, whichever
1072 * Anything bigger can potentially see the cabq consume
1073 * almost all buffers, starving everything else, only to
1074 * see most fail to transmit in the given beacon interval.
1076 sc->sc_txq_mcastq_maxdepth = MIN(64, ath_txbuf / 4);
1079 * How deep can the node software TX queue get whilst it's asleep.
1081 sc->sc_txq_node_psq_maxdepth = 16;
1084 * Default the maximum queue to 1/4'th the TX buffers, or
1085 * 64, whichever is smaller.
1087 sc->sc_txq_node_maxdepth = MIN(64, ath_txbuf / 4);
1089 /* Enable CABQ by default */
1090 sc->sc_cabq_enable = 1;
1093 * Allow the TX and RX chainmasks to be overridden by
1094 * environment variables and/or device.hints.
1096 * This must be done early - before the hardware is
1097 * calibrated or before the 802.11n stream calculation
1100 if (resource_int_value(device_get_name(sc->sc_dev),
1101 device_get_unit(sc->sc_dev), "rx_chainmask",
1102 &rx_chainmask) == 0) {
1103 device_printf(sc->sc_dev, "Setting RX chainmask to 0x%x\n",
1105 (void) ath_hal_setrxchainmask(sc->sc_ah, rx_chainmask);
1107 if (resource_int_value(device_get_name(sc->sc_dev),
1108 device_get_unit(sc->sc_dev), "tx_chainmask",
1109 &tx_chainmask) == 0) {
1110 device_printf(sc->sc_dev, "Setting TX chainmask to 0x%x\n",
1112 (void) ath_hal_settxchainmask(sc->sc_ah, tx_chainmask);
1116 * Query the TX/RX chainmask configuration.
1118 * This is only relevant for 11n devices.
1120 ath_hal_getrxchainmask(ah, &sc->sc_rxchainmask);
1121 ath_hal_gettxchainmask(ah, &sc->sc_txchainmask);
1124 * Disable MRR with protected frames by default.
1125 * Only 802.11n series NICs can handle this.
1127 sc->sc_mrrprot = 0; /* XXX should be a capability */
1130 * Query the enterprise mode information the HAL.
1132 if (ath_hal_getcapability(ah, HAL_CAP_ENTERPRISE_MODE, 0,
1133 &sc->sc_ent_cfg) == HAL_OK)
1136 #ifdef ATH_ENABLE_11N
1138 * Query HT capabilities
1140 if (ath_hal_getcapability(ah, HAL_CAP_HT, 0, NULL) == HAL_OK &&
1141 (wmodes & (HAL_MODE_HT20 | HAL_MODE_HT40))) {
1145 device_printf(sc->sc_dev, "[HT] enabling HT modes\n");
1147 sc->sc_mrrprot = 1; /* XXX should be a capability */
1149 ic->ic_htcaps = IEEE80211_HTC_HT /* HT operation */
1150 | IEEE80211_HTC_AMPDU /* A-MPDU tx/rx */
1151 | IEEE80211_HTC_AMSDU /* A-MSDU tx/rx */
1152 | IEEE80211_HTCAP_MAXAMSDU_3839
1153 /* max A-MSDU length */
1154 | IEEE80211_HTCAP_SMPS_OFF; /* SM power save off */
1157 * Enable short-GI for HT20 only if the hardware
1158 * advertises support.
1159 * Notably, anything earlier than the AR9287 doesn't.
1161 if ((ath_hal_getcapability(ah,
1162 HAL_CAP_HT20_SGI, 0, NULL) == HAL_OK) &&
1163 (wmodes & HAL_MODE_HT20)) {
1164 device_printf(sc->sc_dev,
1165 "[HT] enabling short-GI in 20MHz mode\n");
1166 ic->ic_htcaps |= IEEE80211_HTCAP_SHORTGI20;
1169 if (wmodes & HAL_MODE_HT40)
1170 ic->ic_htcaps |= IEEE80211_HTCAP_CHWIDTH40
1171 | IEEE80211_HTCAP_SHORTGI40;
1174 * TX/RX streams need to be taken into account when
1175 * negotiating which MCS rates it'll receive and
1176 * what MCS rates are available for TX.
1178 (void) ath_hal_getcapability(ah, HAL_CAP_STREAMS, 0, &txs);
1179 (void) ath_hal_getcapability(ah, HAL_CAP_STREAMS, 1, &rxs);
1180 ic->ic_txstream = txs;
1181 ic->ic_rxstream = rxs;
1184 * Setup TX and RX STBC based on what the HAL allows and
1185 * the currently configured chainmask set.
1186 * Ie - don't enable STBC TX if only one chain is enabled.
1187 * STBC RX is fine on a single RX chain; it just won't
1188 * provide any real benefit.
1190 if (ath_hal_getcapability(ah, HAL_CAP_RX_STBC, 0,
1193 device_printf(sc->sc_dev,
1194 "[HT] 1 stream STBC receive enabled\n");
1195 ic->ic_htcaps |= IEEE80211_HTCAP_RXSTBC_1STREAM;
1197 if (txs > 1 && ath_hal_getcapability(ah, HAL_CAP_TX_STBC, 0,
1200 device_printf(sc->sc_dev,
1201 "[HT] 1 stream STBC transmit enabled\n");
1202 ic->ic_htcaps |= IEEE80211_HTCAP_TXSTBC;
1205 (void) ath_hal_getcapability(ah, HAL_CAP_RTS_AGGR_LIMIT, 1,
1206 &sc->sc_rts_aggr_limit);
1207 if (sc->sc_rts_aggr_limit != (64 * 1024))
1208 device_printf(sc->sc_dev,
1209 "[HT] RTS aggregates limited to %d KiB\n",
1210 sc->sc_rts_aggr_limit / 1024);
1215 if ((ath_hal_getcapability(ah, HAL_CAP_LDPC, 0, &ldpc))
1216 == HAL_OK && (ldpc == 1)) {
1217 sc->sc_has_ldpc = 1;
1218 device_printf(sc->sc_dev,
1219 "[HT] LDPC transmit/receive enabled\n");
1220 ic->ic_htcaps |= IEEE80211_HTCAP_LDPC |
1221 IEEE80211_HTC_TXLDPC;
1225 device_printf(sc->sc_dev,
1226 "[HT] %d RX streams; %d TX streams\n", rxs, txs);
1231 * Initial aggregation settings.
1233 sc->sc_hwq_limit_aggr = ATH_AGGR_MIN_QDEPTH;
1234 sc->sc_hwq_limit_nonaggr = ATH_NONAGGR_MIN_QDEPTH;
1235 sc->sc_tid_hwq_lo = ATH_AGGR_SCHED_LOW;
1236 sc->sc_tid_hwq_hi = ATH_AGGR_SCHED_HIGH;
1237 sc->sc_aggr_limit = ATH_AGGR_MAXSIZE;
1238 sc->sc_delim_min_pad = 0;
1241 * Check if the hardware requires PCI register serialisation.
1242 * Some of the Owl based MACs require this.
1245 ath_hal_getcapability(ah, HAL_CAP_SERIALISE_WAR,
1246 0, NULL) == HAL_OK) {
1247 sc->sc_ah->ah_config.ah_serialise_reg_war = 1;
1248 device_printf(sc->sc_dev,
1249 "Enabling register serialisation\n");
1253 * Initialise the deferred completed RX buffer list.
1255 TAILQ_INIT(&sc->sc_rx_rxlist[HAL_RX_QUEUE_HP]);
1256 TAILQ_INIT(&sc->sc_rx_rxlist[HAL_RX_QUEUE_LP]);
1259 * Indicate we need the 802.11 header padded to a
1260 * 32-bit boundary for 4-address and QoS frames.
1262 ic->ic_flags |= IEEE80211_F_DATAPAD;
1265 * Query the hal about antenna support.
1267 sc->sc_defant = ath_hal_getdefantenna(ah);
1270 * Not all chips have the VEOL support we want to
1271 * use with IBSS beacons; check here for it.
1273 sc->sc_hasveol = ath_hal_hasveol(ah);
1275 /* get mac address from kenv first, then hardware */
1276 if (ath_fetch_mac_kenv(sc, ic->ic_macaddr) == 0) {
1277 /* Tell the HAL now about the new MAC */
1278 ath_hal_setmac(ah, ic->ic_macaddr);
1280 ath_hal_getmac(ah, ic->ic_macaddr);
1283 if (sc->sc_hasbmask)
1284 ath_hal_getbssidmask(ah, sc->sc_hwbssidmask);
1286 /* NB: used to size node table key mapping array */
1287 ic->ic_max_keyix = sc->sc_keymax;
1288 /* call MI attach routine. */
1289 ieee80211_ifattach(ic);
1290 ic->ic_setregdomain = ath_setregdomain;
1291 ic->ic_getradiocaps = ath_getradiocaps;
1292 sc->sc_opmode = HAL_M_STA;
1294 /* override default methods */
1295 ic->ic_ioctl = ath_ioctl;
1296 ic->ic_parent = ath_parent;
1297 ic->ic_transmit = ath_transmit;
1298 ic->ic_newassoc = ath_newassoc;
1299 ic->ic_updateslot = ath_updateslot;
1300 ic->ic_wme.wme_update = ath_wme_update;
1301 ic->ic_vap_create = ath_vap_create;
1302 ic->ic_vap_delete = ath_vap_delete;
1303 ic->ic_raw_xmit = ath_raw_xmit;
1304 ic->ic_update_mcast = ath_update_mcast;
1305 ic->ic_update_promisc = ath_update_promisc;
1306 ic->ic_node_alloc = ath_node_alloc;
1307 sc->sc_node_free = ic->ic_node_free;
1308 ic->ic_node_free = ath_node_free;
1309 sc->sc_node_cleanup = ic->ic_node_cleanup;
1310 ic->ic_node_cleanup = ath_node_cleanup;
1311 ic->ic_node_getsignal = ath_node_getsignal;
1312 ic->ic_scan_start = ath_scan_start;
1313 ic->ic_scan_end = ath_scan_end;
1314 ic->ic_set_channel = ath_set_channel;
1315 #ifdef ATH_ENABLE_11N
1316 /* 802.11n specific - but just override anyway */
1317 sc->sc_addba_request = ic->ic_addba_request;
1318 sc->sc_addba_response = ic->ic_addba_response;
1319 sc->sc_addba_stop = ic->ic_addba_stop;
1320 sc->sc_bar_response = ic->ic_bar_response;
1321 sc->sc_addba_response_timeout = ic->ic_addba_response_timeout;
1323 ic->ic_addba_request = ath_addba_request;
1324 ic->ic_addba_response = ath_addba_response;
1325 ic->ic_addba_response_timeout = ath_addba_response_timeout;
1326 ic->ic_addba_stop = ath_addba_stop;
1327 ic->ic_bar_response = ath_bar_response;
1329 ic->ic_update_chw = ath_update_chw;
1330 #endif /* ATH_ENABLE_11N */
1331 ic->ic_set_quiet = ath_set_quiet_ie;
1333 #ifdef ATH_ENABLE_RADIOTAP_VENDOR_EXT
1335 * There's one vendor bitmap entry in the RX radiotap
1336 * header; make sure that's taken into account.
1338 ieee80211_radiotap_attachv(ic,
1339 &sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th), 0,
1340 ATH_TX_RADIOTAP_PRESENT,
1341 &sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th), 1,
1342 ATH_RX_RADIOTAP_PRESENT);
1345 * No vendor bitmap/extensions are present.
1347 ieee80211_radiotap_attach(ic,
1348 &sc->sc_tx_th.wt_ihdr, sizeof(sc->sc_tx_th),
1349 ATH_TX_RADIOTAP_PRESENT,
1350 &sc->sc_rx_th.wr_ihdr, sizeof(sc->sc_rx_th),
1351 ATH_RX_RADIOTAP_PRESENT);
1352 #endif /* ATH_ENABLE_RADIOTAP_VENDOR_EXT */
1355 * Setup the ALQ logging if required
1357 #ifdef ATH_DEBUG_ALQ
1358 if_ath_alq_init(&sc->sc_alq, device_get_nameunit(sc->sc_dev));
1359 if_ath_alq_setcfg(&sc->sc_alq,
1360 sc->sc_ah->ah_macVersion,
1361 sc->sc_ah->ah_macRev,
1362 sc->sc_ah->ah_phyRev,
1363 sc->sc_ah->ah_magic);
1367 * Setup dynamic sysctl's now that country code and
1368 * regdomain are available from the hal.
1370 ath_sysctlattach(sc);
1371 ath_sysctl_stats_attach(sc);
1372 ath_sysctl_hal_attach(sc);
1375 ieee80211_announce(ic);
1379 * Put it to sleep for now.
1382 ath_power_setpower(sc, HAL_PM_FULL_SLEEP, 1);
1389 ath_txdma_teardown(sc);
1390 ath_rxdma_teardown(sc);
1400 ath_detach(struct ath_softc *sc)
1404 * NB: the order of these is important:
1405 * o stop the chip so no more interrupts will fire
1406 * o call the 802.11 layer before detaching the hal to
1407 * insure callbacks into the driver to delete global
1408 * key cache entries can be handled
1409 * o free the taskqueue which drains any pending tasks
1410 * o reclaim the tx queue data structures after calling
1411 * the 802.11 layer as we'll get called back to reclaim
1412 * node state and potentially want to use them
1413 * o to cleanup the tx queues the hal is called, so detach
1415 * Other than that, it's straightforward...
1419 * XXX Wake the hardware up first. ath_stop() will still
1420 * wake it up first, but I'd rather do it here just to
1421 * ensure it's awake.
1424 ath_power_set_power_state(sc, HAL_PM_AWAKE);
1425 ath_power_setpower(sc, HAL_PM_AWAKE, 1);
1428 * Stop things cleanly.
1433 ieee80211_ifdetach(&sc->sc_ic);
1434 taskqueue_free(sc->sc_tq);
1435 #ifdef ATH_TX99_DIAG
1436 if (sc->sc_tx99 != NULL)
1437 sc->sc_tx99->detach(sc->sc_tx99);
1439 ath_rate_detach(sc->sc_rc);
1440 #ifdef ATH_DEBUG_ALQ
1441 if_ath_alq_tidyup(&sc->sc_alq);
1443 ath_lna_div_detach(sc);
1444 ath_btcoex_detach(sc);
1445 ath_spectral_detach(sc);
1448 ath_txdma_teardown(sc);
1449 ath_rxdma_teardown(sc);
1451 ath_hal_detach(sc->sc_ah); /* NB: sets chip in full sleep */
1457 * MAC address handling for multiple BSS on the same radio.
1458 * The first vap uses the MAC address from the EEPROM. For
1459 * subsequent vap's we set the U/L bit (bit 1) in the MAC
1460 * address and use the next six bits as an index.
1463 assign_address(struct ath_softc *sc, uint8_t mac[IEEE80211_ADDR_LEN], int clone)
1467 if (clone && sc->sc_hasbmask) {
1468 /* NB: we only do this if h/w supports multiple bssid */
1469 for (i = 0; i < 8; i++)
1470 if ((sc->sc_bssidmask & (1<<i)) == 0)
1473 mac[0] |= (i << 2)|0x2;
1476 sc->sc_bssidmask |= 1<<i;
1477 sc->sc_hwbssidmask[0] &= ~mac[0];
1483 reclaim_address(struct ath_softc *sc, const uint8_t mac[IEEE80211_ADDR_LEN])
1485 int i = mac[0] >> 2;
1488 if (i != 0 || --sc->sc_nbssid0 == 0) {
1489 sc->sc_bssidmask &= ~(1<<i);
1490 /* recalculate bssid mask from remaining addresses */
1492 for (i = 1; i < 8; i++)
1493 if (sc->sc_bssidmask & (1<<i))
1494 mask &= ~((i<<2)|0x2);
1495 sc->sc_hwbssidmask[0] |= mask;
1500 * Assign a beacon xmit slot. We try to space out
1501 * assignments so when beacons are staggered the
1502 * traffic coming out of the cab q has maximal time
1503 * to go out before the next beacon is scheduled.
1506 assign_bslot(struct ath_softc *sc)
1511 for (slot = 0; slot < ATH_BCBUF; slot++)
1512 if (sc->sc_bslot[slot] == NULL) {
1513 if (sc->sc_bslot[(slot+1)%ATH_BCBUF] == NULL &&
1514 sc->sc_bslot[(slot-1)%ATH_BCBUF] == NULL)
1517 /* NB: keep looking for a double slot */
1522 static struct ieee80211vap *
1523 ath_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit,
1524 enum ieee80211_opmode opmode, int flags,
1525 const uint8_t bssid[IEEE80211_ADDR_LEN],
1526 const uint8_t mac0[IEEE80211_ADDR_LEN])
1528 struct ath_softc *sc = ic->ic_softc;
1529 struct ath_vap *avp;
1530 struct ieee80211vap *vap;
1531 uint8_t mac[IEEE80211_ADDR_LEN];
1532 int needbeacon, error;
1533 enum ieee80211_opmode ic_opmode;
1535 avp = malloc(sizeof(struct ath_vap), M_80211_VAP, M_WAITOK | M_ZERO);
1537 IEEE80211_ADDR_COPY(mac, mac0);
1540 ic_opmode = opmode; /* default to opmode of new vap */
1542 case IEEE80211_M_STA:
1543 if (sc->sc_nstavaps != 0) { /* XXX only 1 for now */
1544 device_printf(sc->sc_dev, "only 1 sta vap supported\n");
1549 * With multiple vaps we must fall back
1550 * to s/w beacon miss handling.
1552 flags |= IEEE80211_CLONE_NOBEACONS;
1554 if (flags & IEEE80211_CLONE_NOBEACONS) {
1556 * Station mode w/o beacons are implemented w/ AP mode.
1558 ic_opmode = IEEE80211_M_HOSTAP;
1561 case IEEE80211_M_IBSS:
1562 if (sc->sc_nvaps != 0) { /* XXX only 1 for now */
1563 device_printf(sc->sc_dev,
1564 "only 1 ibss vap supported\n");
1569 case IEEE80211_M_AHDEMO:
1570 #ifdef IEEE80211_SUPPORT_TDMA
1571 if (flags & IEEE80211_CLONE_TDMA) {
1572 if (sc->sc_nvaps != 0) {
1573 device_printf(sc->sc_dev,
1574 "only 1 tdma vap supported\n");
1578 flags |= IEEE80211_CLONE_NOBEACONS;
1582 case IEEE80211_M_MONITOR:
1583 if (sc->sc_nvaps != 0 && ic->ic_opmode != opmode) {
1585 * Adopt existing mode. Adding a monitor or ahdemo
1586 * vap to an existing configuration is of dubious
1587 * value but should be ok.
1589 /* XXX not right for monitor mode */
1590 ic_opmode = ic->ic_opmode;
1593 case IEEE80211_M_HOSTAP:
1594 case IEEE80211_M_MBSS:
1597 case IEEE80211_M_WDS:
1598 if (sc->sc_nvaps != 0 && ic->ic_opmode == IEEE80211_M_STA) {
1599 device_printf(sc->sc_dev,
1600 "wds not supported in sta mode\n");
1604 * Silently remove any request for a unique
1605 * bssid; WDS vap's always share the local
1608 flags &= ~IEEE80211_CLONE_BSSID;
1609 if (sc->sc_nvaps == 0)
1610 ic_opmode = IEEE80211_M_HOSTAP;
1612 ic_opmode = ic->ic_opmode;
1615 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode);
1619 * Check that a beacon buffer is available; the code below assumes it.
1621 if (needbeacon & TAILQ_EMPTY(&sc->sc_bbuf)) {
1622 device_printf(sc->sc_dev, "no beacon buffer available\n");
1627 if (opmode == IEEE80211_M_HOSTAP || opmode == IEEE80211_M_MBSS || opmode == IEEE80211_M_STA) {
1628 assign_address(sc, mac, flags & IEEE80211_CLONE_BSSID);
1629 ath_hal_setbssidmask(sc->sc_ah, sc->sc_hwbssidmask);
1633 /* XXX can't hold mutex across if_alloc */
1635 error = ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
1638 device_printf(sc->sc_dev, "%s: error %d creating vap\n",
1643 /* h/w crypto support */
1644 vap->iv_key_alloc = ath_key_alloc;
1645 vap->iv_key_delete = ath_key_delete;
1646 vap->iv_key_set = ath_key_set;
1647 vap->iv_key_update_begin = ath_key_update_begin;
1648 vap->iv_key_update_end = ath_key_update_end;
1650 /* override various methods */
1651 avp->av_recv_mgmt = vap->iv_recv_mgmt;
1652 vap->iv_recv_mgmt = ath_recv_mgmt;
1653 vap->iv_reset = ath_reset_vap;
1654 vap->iv_update_beacon = ath_beacon_update;
1655 avp->av_newstate = vap->iv_newstate;
1656 vap->iv_newstate = ath_newstate;
1657 avp->av_bmiss = vap->iv_bmiss;
1658 vap->iv_bmiss = ath_bmiss_vap;
1660 avp->av_node_ps = vap->iv_node_ps;
1661 vap->iv_node_ps = ath_node_powersave;
1663 avp->av_set_tim = vap->iv_set_tim;
1664 vap->iv_set_tim = ath_node_set_tim;
1666 avp->av_recv_pspoll = vap->iv_recv_pspoll;
1667 vap->iv_recv_pspoll = ath_node_recv_pspoll;
1669 /* Set default parameters */
1672 * Anything earlier than some AR9300 series MACs don't
1673 * support a smaller MPDU density.
1675 vap->iv_ampdu_density = IEEE80211_HTCAP_MPDUDENSITY_8;
1677 * All NICs can handle the maximum size, however
1678 * AR5416 based MACs can only TX aggregates w/ RTS
1679 * protection when the total aggregate size is <= 8k.
1680 * However, for now that's enforced by the TX path.
1682 vap->iv_ampdu_rxmax = IEEE80211_HTCAP_MAXRXAMPDU_64K;
1683 vap->iv_ampdu_limit = IEEE80211_HTCAP_MAXRXAMPDU_64K;
1688 * Allocate beacon state and setup the q for buffered
1689 * multicast frames. We know a beacon buffer is
1690 * available because we checked above.
1692 avp->av_bcbuf = TAILQ_FIRST(&sc->sc_bbuf);
1693 TAILQ_REMOVE(&sc->sc_bbuf, avp->av_bcbuf, bf_list);
1694 if (opmode != IEEE80211_M_IBSS || !sc->sc_hasveol) {
1696 * Assign the vap to a beacon xmit slot. As above
1697 * this cannot fail to find a free one.
1699 avp->av_bslot = assign_bslot(sc);
1700 KASSERT(sc->sc_bslot[avp->av_bslot] == NULL,
1701 ("beacon slot %u not empty", avp->av_bslot));
1702 sc->sc_bslot[avp->av_bslot] = vap;
1705 if (sc->sc_hastsfadd && sc->sc_nbcnvaps > 0) {
1707 * Multple vaps are to transmit beacons and we
1708 * have h/w support for TSF adjusting; enable
1709 * use of staggered beacons.
1711 sc->sc_stagbeacons = 1;
1713 ath_txq_init(sc, &avp->av_mcastq, ATH_TXQ_SWQ);
1716 ic->ic_opmode = ic_opmode;
1717 if (opmode != IEEE80211_M_WDS) {
1719 if (opmode == IEEE80211_M_STA)
1721 if (opmode == IEEE80211_M_MBSS)
1724 switch (ic_opmode) {
1725 case IEEE80211_M_IBSS:
1726 sc->sc_opmode = HAL_M_IBSS;
1728 case IEEE80211_M_STA:
1729 sc->sc_opmode = HAL_M_STA;
1731 case IEEE80211_M_AHDEMO:
1732 #ifdef IEEE80211_SUPPORT_TDMA
1733 if (vap->iv_caps & IEEE80211_C_TDMA) {
1735 /* NB: disable tsf adjust */
1736 sc->sc_stagbeacons = 0;
1739 * NB: adhoc demo mode is a pseudo mode; to the hal it's
1744 case IEEE80211_M_HOSTAP:
1745 case IEEE80211_M_MBSS:
1746 sc->sc_opmode = HAL_M_HOSTAP;
1748 case IEEE80211_M_MONITOR:
1749 sc->sc_opmode = HAL_M_MONITOR;
1752 /* XXX should not happen */
1755 if (sc->sc_hastsfadd) {
1757 * Configure whether or not TSF adjust should be done.
1759 ath_hal_settsfadjust(sc->sc_ah, sc->sc_stagbeacons);
1761 if (flags & IEEE80211_CLONE_NOBEACONS) {
1763 * Enable s/w beacon miss handling.
1769 /* complete setup */
1770 ieee80211_vap_attach(vap, ath_media_change, ieee80211_media_status,
1774 reclaim_address(sc, mac);
1775 ath_hal_setbssidmask(sc->sc_ah, sc->sc_hwbssidmask);
1777 free(avp, M_80211_VAP);
1783 ath_vap_delete(struct ieee80211vap *vap)
1785 struct ieee80211com *ic = vap->iv_ic;
1786 struct ath_softc *sc = ic->ic_softc;
1787 struct ath_hal *ah = sc->sc_ah;
1788 struct ath_vap *avp = ATH_VAP(vap);
1791 ath_power_set_power_state(sc, HAL_PM_AWAKE);
1794 DPRINTF(sc, ATH_DEBUG_RESET, "%s: called\n", __func__);
1795 if (sc->sc_running) {
1797 * Quiesce the hardware while we remove the vap. In
1798 * particular we need to reclaim all references to
1799 * the vap state by any frames pending on the tx queues.
1801 ath_hal_intrset(ah, 0); /* disable interrupts */
1802 /* XXX Do all frames from all vaps/nodes need draining here? */
1803 ath_stoprecv(sc, 1); /* stop recv side */
1804 ath_draintxq(sc, ATH_RESET_DEFAULT); /* stop hw xmit side */
1807 /* .. leave the hardware awake for now. */
1809 ieee80211_vap_detach(vap);
1812 * XXX Danger Will Robinson! Danger!
1814 * Because ieee80211_vap_detach() can queue a frame (the station
1815 * diassociate message?) after we've drained the TXQ and
1816 * flushed the software TXQ, we will end up with a frame queued
1817 * to a node whose vap is about to be freed.
1819 * To work around this, flush the hardware/software again.
1820 * This may be racy - the ath task may be running and the packet
1821 * may be being scheduled between sw->hw txq. Tsk.
1823 * TODO: figure out why a new node gets allocated somewhere around
1824 * here (after the ath_tx_swq() call; and after an ath_stop()
1828 ath_draintxq(sc, ATH_RESET_DEFAULT);
1832 * Reclaim beacon state. Note this must be done before
1833 * the vap instance is reclaimed as we may have a reference
1834 * to it in the buffer for the beacon frame.
1836 if (avp->av_bcbuf != NULL) {
1837 if (avp->av_bslot != -1) {
1838 sc->sc_bslot[avp->av_bslot] = NULL;
1841 ath_beacon_return(sc, avp->av_bcbuf);
1842 avp->av_bcbuf = NULL;
1843 if (sc->sc_nbcnvaps == 0) {
1844 sc->sc_stagbeacons = 0;
1845 if (sc->sc_hastsfadd)
1846 ath_hal_settsfadjust(sc->sc_ah, 0);
1849 * Reclaim any pending mcast frames for the vap.
1851 ath_tx_draintxq(sc, &avp->av_mcastq);
1854 * Update bookkeeping.
1856 if (vap->iv_opmode == IEEE80211_M_STA) {
1858 if (sc->sc_nstavaps == 0 && sc->sc_swbmiss)
1860 } else if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
1861 vap->iv_opmode == IEEE80211_M_STA ||
1862 vap->iv_opmode == IEEE80211_M_MBSS) {
1863 reclaim_address(sc, vap->iv_myaddr);
1864 ath_hal_setbssidmask(ah, sc->sc_hwbssidmask);
1865 if (vap->iv_opmode == IEEE80211_M_MBSS)
1868 if (vap->iv_opmode != IEEE80211_M_WDS)
1870 #ifdef IEEE80211_SUPPORT_TDMA
1871 /* TDMA operation ceases when the last vap is destroyed */
1872 if (sc->sc_tdma && sc->sc_nvaps == 0) {
1877 free(avp, M_80211_VAP);
1879 if (sc->sc_running) {
1881 * Restart rx+tx machines if still running (RUNNING will
1882 * be reset if we just destroyed the last vap).
1884 if (ath_startrecv(sc) != 0)
1885 device_printf(sc->sc_dev,
1886 "%s: unable to restart recv logic\n", __func__);
1887 if (sc->sc_beacons) { /* restart beacons */
1888 #ifdef IEEE80211_SUPPORT_TDMA
1890 ath_tdma_config(sc, NULL);
1893 ath_beacon_config(sc, NULL);
1895 ath_hal_intrset(ah, sc->sc_imask);
1898 /* Ok, let the hardware asleep. */
1899 ath_power_restore_power_state(sc);
1904 ath_suspend(struct ath_softc *sc)
1906 struct ieee80211com *ic = &sc->sc_ic;
1908 sc->sc_resume_up = ic->ic_nrunning != 0;
1910 ieee80211_suspend_all(ic);
1912 * NB: don't worry about putting the chip in low power
1913 * mode; pci will power off our socket on suspend and
1914 * CardBus detaches the device.
1916 * XXX TODO: well, that's great, except for non-cardbus
1921 * XXX This doesn't wait until all pending taskqueue
1922 * items and parallel transmit/receive/other threads
1925 ath_hal_intrset(sc->sc_ah, 0);
1926 taskqueue_block(sc->sc_tq);
1929 callout_stop(&sc->sc_cal_ch);
1933 * XXX ensure sc_invalid is 1
1936 /* Disable the PCIe PHY, complete with workarounds */
1937 ath_hal_enablepcie(sc->sc_ah, 1, 1);
1941 * Reset the key cache since some parts do not reset the
1942 * contents on resume. First we clear all entries, then
1943 * re-load keys that the 802.11 layer assumes are setup
1947 ath_reset_keycache(struct ath_softc *sc)
1949 struct ieee80211com *ic = &sc->sc_ic;
1950 struct ath_hal *ah = sc->sc_ah;
1954 ath_power_set_power_state(sc, HAL_PM_AWAKE);
1955 for (i = 0; i < sc->sc_keymax; i++)
1956 ath_hal_keyreset(ah, i);
1957 ath_power_restore_power_state(sc);
1959 ieee80211_crypto_reload_keys(ic);
1963 * Fetch the current chainmask configuration based on the current
1964 * operating channel and options.
1967 ath_update_chainmasks(struct ath_softc *sc, struct ieee80211_channel *chan)
1971 * Set TX chainmask to the currently configured chainmask;
1972 * the TX chainmask depends upon the current operating mode.
1974 sc->sc_cur_rxchainmask = sc->sc_rxchainmask;
1975 if (IEEE80211_IS_CHAN_HT(chan)) {
1976 sc->sc_cur_txchainmask = sc->sc_txchainmask;
1978 sc->sc_cur_txchainmask = 1;
1981 DPRINTF(sc, ATH_DEBUG_RESET,
1982 "%s: TX chainmask is now 0x%x, RX is now 0x%x\n",
1984 sc->sc_cur_txchainmask,
1985 sc->sc_cur_rxchainmask);
1989 ath_resume(struct ath_softc *sc)
1991 struct ieee80211com *ic = &sc->sc_ic;
1992 struct ath_hal *ah = sc->sc_ah;
1995 ath_hal_enablepcie(ah, 0, 0);
1998 * Must reset the chip before we reload the
1999 * keycache as we were powered down on suspend.
2001 ath_update_chainmasks(sc,
2002 sc->sc_curchan != NULL ? sc->sc_curchan : ic->ic_curchan);
2003 ath_hal_setchainmasks(sc->sc_ah, sc->sc_cur_txchainmask,
2004 sc->sc_cur_rxchainmask);
2006 /* Ensure we set the current power state to on */
2008 ath_power_setselfgen(sc, HAL_PM_AWAKE);
2009 ath_power_set_power_state(sc, HAL_PM_AWAKE);
2010 ath_power_setpower(sc, HAL_PM_AWAKE, 1);
2013 ath_hal_reset(ah, sc->sc_opmode,
2014 sc->sc_curchan != NULL ? sc->sc_curchan : ic->ic_curchan,
2015 AH_FALSE, HAL_RESET_NORMAL, &status);
2016 ath_reset_keycache(sc);
2019 sc->sc_rx_stopped = 1;
2020 sc->sc_rx_resetted = 1;
2023 /* Let DFS at it in case it's a DFS channel */
2024 ath_dfs_radar_enable(sc, ic->ic_curchan);
2026 /* Let spectral at in case spectral is enabled */
2027 ath_spectral_enable(sc, ic->ic_curchan);
2030 * Let bluetooth coexistence at in case it's needed for this channel
2032 ath_btcoex_enable(sc, ic->ic_curchan);
2035 * If we're doing TDMA, enforce the TXOP limitation for chips that
2038 if (sc->sc_hasenforcetxop && sc->sc_tdma)
2039 ath_hal_setenforcetxop(sc->sc_ah, 1);
2041 ath_hal_setenforcetxop(sc->sc_ah, 0);
2043 /* Restore the LED configuration */
2045 ath_hal_setledstate(ah, HAL_LED_INIT);
2047 if (sc->sc_resume_up)
2048 ieee80211_resume_all(ic);
2051 ath_power_restore_power_state(sc);
2058 ath_shutdown(struct ath_softc *sc)
2064 /* NB: no point powering down chip as we're about to reboot */
2068 * Interrupt handler. Most of the actual processing is deferred.
2073 struct ath_softc *sc = arg;
2074 struct ath_hal *ah = sc->sc_ah;
2079 * If we're inside a reset path, just print a warning and
2080 * clear the ISR. The reset routine will finish it for us.
2083 if (sc->sc_inreset_cnt) {
2085 ath_hal_getisr(ah, &status); /* clear ISR */
2086 ath_hal_intrset(ah, 0); /* disable further intr's */
2087 DPRINTF(sc, ATH_DEBUG_ANY,
2088 "%s: in reset, ignoring: status=0x%x\n",
2094 if (sc->sc_invalid) {
2096 * The hardware is not ready/present, don't touch anything.
2097 * Note this can happen early on if the IRQ is shared.
2099 DPRINTF(sc, ATH_DEBUG_ANY, "%s: invalid; ignored\n", __func__);
2103 if (!ath_hal_intrpend(ah)) { /* shared irq, not for us */
2109 ath_power_set_power_state(sc, HAL_PM_AWAKE);
2112 if (sc->sc_ic.ic_nrunning == 0 && sc->sc_running == 0) {
2115 DPRINTF(sc, ATH_DEBUG_ANY, "%s: ic_nrunning %d sc_running %d\n",
2116 __func__, sc->sc_ic.ic_nrunning, sc->sc_running);
2117 ath_hal_getisr(ah, &status); /* clear ISR */
2118 ath_hal_intrset(ah, 0); /* disable further intr's */
2122 ath_power_restore_power_state(sc);
2128 * Figure out the reason(s) for the interrupt. Note
2129 * that the hal returns a pseudo-ISR that may include
2130 * bits we haven't explicitly enabled so we mask the
2131 * value to insure we only process bits we requested.
2133 ath_hal_getisr(ah, &status); /* NB: clears ISR too */
2134 DPRINTF(sc, ATH_DEBUG_INTR, "%s: status 0x%x\n", __func__, status);
2135 ATH_KTR(sc, ATH_KTR_INTERRUPTS, 1, "ath_intr: mask=0x%.8x", status);
2136 #ifdef ATH_DEBUG_ALQ
2137 if_ath_alq_post_intr(&sc->sc_alq, status, ah->ah_intrstate,
2139 #endif /* ATH_DEBUG_ALQ */
2140 #ifdef ATH_KTR_INTR_DEBUG
2141 ATH_KTR(sc, ATH_KTR_INTERRUPTS, 5,
2142 "ath_intr: ISR=0x%.8x, ISR_S0=0x%.8x, ISR_S1=0x%.8x, ISR_S2=0x%.8x, ISR_S5=0x%.8x",
2143 ah->ah_intrstate[0],
2144 ah->ah_intrstate[1],
2145 ah->ah_intrstate[2],
2146 ah->ah_intrstate[3],
2147 ah->ah_intrstate[6]);
2150 /* Squirrel away SYNC interrupt debugging */
2151 if (ah->ah_syncstate != 0) {
2153 for (i = 0; i < 32; i++)
2154 if (ah->ah_syncstate & (1 << i))
2155 sc->sc_intr_stats.sync_intr[i]++;
2158 status &= sc->sc_imask; /* discard unasked for bits */
2160 /* Short-circuit un-handled interrupts */
2161 if (status == 0x0) {
2165 ath_power_restore_power_state(sc);
2172 * Take a note that we're inside the interrupt handler, so
2173 * the reset routines know to wait.
2179 * Handle the interrupt. We won't run concurrent with the reset
2180 * or channel change routines as they'll wait for sc_intr_cnt
2181 * to be 0 before continuing.
2183 if (status & HAL_INT_FATAL) {
2184 sc->sc_stats.ast_hardware++;
2185 ath_hal_intrset(ah, 0); /* disable intr's until reset */
2186 taskqueue_enqueue(sc->sc_tq, &sc->sc_fataltask);
2188 if (status & HAL_INT_SWBA) {
2190 * Software beacon alert--time to send a beacon.
2191 * Handle beacon transmission directly; deferring
2192 * this is too slow to meet timing constraints
2195 #ifdef IEEE80211_SUPPORT_TDMA
2197 if (sc->sc_tdmaswba == 0) {
2198 struct ieee80211com *ic = &sc->sc_ic;
2199 struct ieee80211vap *vap =
2200 TAILQ_FIRST(&ic->ic_vaps);
2201 ath_tdma_beacon_send(sc, vap);
2203 vap->iv_tdma->tdma_bintval;
2209 ath_beacon_proc(sc, 0);
2210 #ifdef IEEE80211_SUPPORT_SUPERG
2212 * Schedule the rx taskq in case there's no
2213 * traffic so any frames held on the staging
2214 * queue are aged and potentially flushed.
2216 sc->sc_rx.recv_sched(sc, 1);
2220 if (status & HAL_INT_RXEOL) {
2222 ATH_KTR(sc, ATH_KTR_ERROR, 0, "ath_intr: RXEOL");
2223 if (! sc->sc_isedma) {
2226 * NB: the hardware should re-read the link when
2227 * RXE bit is written, but it doesn't work at
2228 * least on older hardware revs.
2230 sc->sc_stats.ast_rxeol++;
2232 * Disable RXEOL/RXORN - prevent an interrupt
2233 * storm until the PCU logic can be reset.
2234 * In case the interface is reset some other
2235 * way before "sc_kickpcu" is called, don't
2236 * modify sc_imask - that way if it is reset
2237 * by a call to ath_reset() somehow, the
2238 * interrupt mask will be correctly reprogrammed.
2240 imask = sc->sc_imask;
2241 imask &= ~(HAL_INT_RXEOL | HAL_INT_RXORN);
2242 ath_hal_intrset(ah, imask);
2244 * Only blank sc_rxlink if we've not yet kicked
2247 * This isn't entirely correct - the correct solution
2248 * would be to have a PCU lock and engage that for
2249 * the duration of the PCU fiddling; which would include
2250 * running the RX process. Otherwise we could end up
2251 * messing up the RX descriptor chain and making the
2252 * RX desc list much shorter.
2254 if (! sc->sc_kickpcu)
2255 sc->sc_rxlink = NULL;
2260 * Enqueue an RX proc to handle whatever
2261 * is in the RX queue.
2262 * This will then kick the PCU if required.
2264 sc->sc_rx.recv_sched(sc, 1);
2266 if (status & HAL_INT_TXURN) {
2267 sc->sc_stats.ast_txurn++;
2268 /* bump tx trigger level */
2269 ath_hal_updatetxtriglevel(ah, AH_TRUE);
2272 * Handle both the legacy and RX EDMA interrupt bits.
2273 * Note that HAL_INT_RXLP is also HAL_INT_RXDESC.
2275 if (status & (HAL_INT_RX | HAL_INT_RXHP | HAL_INT_RXLP)) {
2276 sc->sc_stats.ast_rx_intr++;
2277 sc->sc_rx.recv_sched(sc, 1);
2279 if (status & HAL_INT_TX) {
2280 sc->sc_stats.ast_tx_intr++;
2282 * Grab all the currently set bits in the HAL txq bitmap
2283 * and blank them. This is the only place we should be
2286 if (! sc->sc_isedma) {
2289 ath_hal_gettxintrtxqs(sc->sc_ah, &txqs);
2290 ATH_KTR(sc, ATH_KTR_INTERRUPTS, 3,
2291 "ath_intr: TX; txqs=0x%08x, txq_active was 0x%08x, now 0x%08x",
2294 sc->sc_txq_active | txqs);
2295 sc->sc_txq_active |= txqs;
2298 taskqueue_enqueue(sc->sc_tq, &sc->sc_txtask);
2300 if (status & HAL_INT_BMISS) {
2301 sc->sc_stats.ast_bmiss++;
2302 taskqueue_enqueue(sc->sc_tq, &sc->sc_bmisstask);
2304 if (status & HAL_INT_GTT)
2305 sc->sc_stats.ast_tx_timeout++;
2306 if (status & HAL_INT_CST)
2307 sc->sc_stats.ast_tx_cst++;
2308 if (status & HAL_INT_MIB) {
2309 sc->sc_stats.ast_mib++;
2312 * Disable interrupts until we service the MIB
2313 * interrupt; otherwise it will continue to fire.
2315 ath_hal_intrset(ah, 0);
2317 * Let the hal handle the event. We assume it will
2318 * clear whatever condition caused the interrupt.
2320 ath_hal_mibevent(ah, &sc->sc_halstats);
2322 * Don't reset the interrupt if we've just
2323 * kicked the PCU, or we may get a nested
2324 * RXEOL before the rxproc has had a chance
2327 if (sc->sc_kickpcu == 0)
2328 ath_hal_intrset(ah, sc->sc_imask);
2331 if (status & HAL_INT_RXORN) {
2332 /* NB: hal marks HAL_INT_FATAL when RXORN is fatal */
2333 ATH_KTR(sc, ATH_KTR_ERROR, 0, "ath_intr: RXORN");
2334 sc->sc_stats.ast_rxorn++;
2336 if (status & HAL_INT_TSFOOR) {
2337 /* out of range beacon - wake the chip up,
2338 * but don't modify self-gen frame config */
2339 device_printf(sc->sc_dev, "%s: TSFOOR\n", __func__);
2340 sc->sc_syncbeacon = 1;
2342 ath_power_setpower(sc, HAL_PM_AWAKE, 0);
2345 if (status & HAL_INT_MCI) {
2346 ath_btcoex_mci_intr(sc);
2354 ath_power_restore_power_state(sc);
2359 ath_fatal_proc(void *arg, int pending)
2361 struct ath_softc *sc = arg;
2369 device_printf(sc->sc_dev, "hardware error; resetting\n");
2371 * Fatal errors are unrecoverable. Typically these
2372 * are caused by DMA errors. Collect h/w state from
2373 * the hal so we can diagnose what's going on.
2375 if (ath_hal_getfatalstate(sc->sc_ah, &sp, &len)) {
2376 KASSERT(len >= 6*sizeof(u_int32_t), ("len %u bytes", len));
2378 device_printf(sc->sc_dev,
2379 "0x%08x 0x%08x 0x%08x, 0x%08x 0x%08x 0x%08x\n", state[0],
2380 state[1] , state[2], state[3], state[4], state[5]);
2382 ath_reset(sc, ATH_RESET_NOLOSS);
2386 ath_bmiss_vap(struct ieee80211vap *vap)
2388 struct ath_softc *sc = vap->iv_ic->ic_softc;
2391 * Workaround phantom bmiss interrupts by sanity-checking
2392 * the time of our last rx'd frame. If it is within the
2393 * beacon miss interval then ignore the interrupt. If it's
2394 * truly a bmiss we'll get another interrupt soon and that'll
2395 * be dispatched up for processing. Note this applies only
2396 * for h/w beacon miss events.
2400 * XXX TODO: Just read the TSF during the interrupt path;
2401 * that way we don't have to wake up again just to read it
2405 ath_power_set_power_state(sc, HAL_PM_AWAKE);
2408 if ((vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS) == 0) {
2409 u_int64_t lastrx = sc->sc_lastrx;
2410 u_int64_t tsf = ath_hal_gettsf64(sc->sc_ah);
2411 /* XXX should take a locked ref to iv_bss */
2412 u_int bmisstimeout =
2413 vap->iv_bmissthreshold * vap->iv_bss->ni_intval * 1024;
2415 DPRINTF(sc, ATH_DEBUG_BEACON,
2416 "%s: tsf %llu lastrx %lld (%llu) bmiss %u\n",
2417 __func__, (unsigned long long) tsf,
2418 (unsigned long long)(tsf - lastrx),
2419 (unsigned long long) lastrx, bmisstimeout);
2421 if (tsf - lastrx <= bmisstimeout) {
2422 sc->sc_stats.ast_bmiss_phantom++;
2425 ath_power_restore_power_state(sc);
2433 * Keep the hardware awake if it's asleep (and leave self-gen
2434 * frame config alone) until the next beacon, so we can resync
2435 * against the next beacon.
2437 * This handles three common beacon miss cases in STA powersave mode -
2438 * (a) the beacon TBTT isnt a multiple of bintval;
2439 * (b) the beacon was missed; and
2440 * (c) the beacons are being delayed because the AP is busy and
2441 * isn't reliably able to meet its TBTT.
2444 ath_power_setpower(sc, HAL_PM_AWAKE, 0);
2445 ath_power_restore_power_state(sc);
2447 DPRINTF(sc, ATH_DEBUG_BEACON,
2448 "%s: forced awake; force syncbeacon=1\n", __func__);
2451 * Attempt to force a beacon resync.
2453 sc->sc_syncbeacon = 1;
2455 ATH_VAP(vap)->av_bmiss(vap);
2458 /* XXX this needs a force wakeup! */
2460 ath_hal_gethangstate(struct ath_hal *ah, uint32_t mask, uint32_t *hangs)
2465 if (!ath_hal_getdiagstate(ah, HAL_DIAG_CHECK_HANGS, &mask, sizeof(mask), &sp, &rsize))
2467 KASSERT(rsize == sizeof(uint32_t), ("resultsize %u", rsize));
2468 *hangs = *(uint32_t *)sp;
2473 ath_bmiss_proc(void *arg, int pending)
2475 struct ath_softc *sc = arg;
2478 DPRINTF(sc, ATH_DEBUG_ANY, "%s: pending %u\n", __func__, pending);
2481 ath_power_set_power_state(sc, HAL_PM_AWAKE);
2484 ath_beacon_miss(sc);
2487 * Do a reset upon any becaon miss event.
2489 * It may be a non-recognised RX clear hang which needs a reset
2492 if (ath_hal_gethangstate(sc->sc_ah, 0xff, &hangs) && hangs != 0) {
2493 ath_reset(sc, ATH_RESET_NOLOSS);
2494 device_printf(sc->sc_dev,
2495 "bb hang detected (0x%x), resetting\n", hangs);
2497 ath_reset(sc, ATH_RESET_NOLOSS);
2498 ieee80211_beacon_miss(&sc->sc_ic);
2501 /* Force a beacon resync, in case they've drifted */
2502 sc->sc_syncbeacon = 1;
2505 ath_power_restore_power_state(sc);
2510 * Handle TKIP MIC setup to deal hardware that doesn't do MIC
2511 * calcs together with WME. If necessary disable the crypto
2512 * hardware and mark the 802.11 state so keys will be setup
2513 * with the MIC work done in software.
2516 ath_settkipmic(struct ath_softc *sc)
2518 struct ieee80211com *ic = &sc->sc_ic;
2520 if ((ic->ic_cryptocaps & IEEE80211_CRYPTO_TKIP) && !sc->sc_wmetkipmic) {
2521 if (ic->ic_flags & IEEE80211_F_WME) {
2522 ath_hal_settkipmic(sc->sc_ah, AH_FALSE);
2523 ic->ic_cryptocaps &= ~IEEE80211_CRYPTO_TKIPMIC;
2525 ath_hal_settkipmic(sc->sc_ah, AH_TRUE);
2526 ic->ic_cryptocaps |= IEEE80211_CRYPTO_TKIPMIC;
2532 ath_vap_clear_quiet_ie(struct ath_softc *sc)
2534 struct ieee80211com *ic = &sc->sc_ic;
2535 struct ieee80211vap *vap;
2536 struct ath_vap *avp;
2538 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
2540 /* Quiet time handling - ensure we resync */
2541 memset(&avp->quiet_ie, 0, sizeof(avp->quiet_ie));
2546 ath_init(struct ath_softc *sc)
2548 struct ieee80211com *ic = &sc->sc_ic;
2549 struct ath_hal *ah = sc->sc_ah;
2552 ATH_LOCK_ASSERT(sc);
2555 * Force the sleep state awake.
2557 ath_power_setselfgen(sc, HAL_PM_AWAKE);
2558 ath_power_set_power_state(sc, HAL_PM_AWAKE);
2559 ath_power_setpower(sc, HAL_PM_AWAKE, 1);
2562 * Stop anything previously setup. This is safe
2563 * whether this is the first time through or not.
2568 * The basic interface to setting the hardware in a good
2569 * state is ``reset''. On return the hardware is known to
2570 * be powered up and with interrupts disabled. This must
2571 * be followed by initialization of the appropriate bits
2572 * and then setup of the interrupt mask.
2575 ath_update_chainmasks(sc, ic->ic_curchan);
2576 ath_hal_setchainmasks(sc->sc_ah, sc->sc_cur_txchainmask,
2577 sc->sc_cur_rxchainmask);
2579 if (!ath_hal_reset(ah, sc->sc_opmode, ic->ic_curchan, AH_FALSE,
2580 HAL_RESET_NORMAL, &status)) {
2581 device_printf(sc->sc_dev,
2582 "unable to reset hardware; hal status %u\n", status);
2587 sc->sc_rx_stopped = 1;
2588 sc->sc_rx_resetted = 1;
2591 /* Clear quiet IE state for each VAP */
2592 ath_vap_clear_quiet_ie(sc);
2594 ath_chan_change(sc, ic->ic_curchan);
2596 /* Let DFS at it in case it's a DFS channel */
2597 ath_dfs_radar_enable(sc, ic->ic_curchan);
2599 /* Let spectral at in case spectral is enabled */
2600 ath_spectral_enable(sc, ic->ic_curchan);
2603 * Let bluetooth coexistence at in case it's needed for this channel
2605 ath_btcoex_enable(sc, ic->ic_curchan);
2608 * If we're doing TDMA, enforce the TXOP limitation for chips that
2611 if (sc->sc_hasenforcetxop && sc->sc_tdma)
2612 ath_hal_setenforcetxop(sc->sc_ah, 1);
2614 ath_hal_setenforcetxop(sc->sc_ah, 0);
2617 * Likewise this is set during reset so update
2618 * state cached in the driver.
2620 sc->sc_diversity = ath_hal_getdiversity(ah);
2621 sc->sc_lastlongcal = ticks;
2622 sc->sc_resetcal = 1;
2623 sc->sc_lastcalreset = 0;
2624 sc->sc_lastani = ticks;
2625 sc->sc_lastshortcal = ticks;
2626 sc->sc_doresetcal = AH_FALSE;
2628 * Beacon timers were cleared here; give ath_newstate()
2629 * a hint that the beacon timers should be poked when
2630 * things transition to the RUN state.
2635 * Setup the hardware after reset: the key cache
2636 * is filled as needed and the receive engine is
2637 * set going. Frame transmit is handled entirely
2638 * in the frame output path; there's nothing to do
2639 * here except setup the interrupt mask.
2641 if (ath_startrecv(sc) != 0) {
2642 device_printf(sc->sc_dev, "unable to start recv logic\n");
2643 ath_power_restore_power_state(sc);
2648 * Enable interrupts.
2650 sc->sc_imask = HAL_INT_RX | HAL_INT_TX
2651 | HAL_INT_RXORN | HAL_INT_TXURN
2652 | HAL_INT_FATAL | HAL_INT_GLOBAL;
2655 * Enable RX EDMA bits. Note these overlap with
2656 * HAL_INT_RX and HAL_INT_RXDESC respectively.
2659 sc->sc_imask |= (HAL_INT_RXHP | HAL_INT_RXLP);
2662 * If we're an EDMA NIC, we don't care about RXEOL.
2663 * Writing a new descriptor in will simply restart
2666 if (! sc->sc_isedma)
2667 sc->sc_imask |= HAL_INT_RXEOL;
2670 * Enable MCI interrupt for MCI devices.
2672 if (sc->sc_btcoex_mci)
2673 sc->sc_imask |= HAL_INT_MCI;
2676 * Enable MIB interrupts when there are hardware phy counters.
2677 * Note we only do this (at the moment) for station mode.
2679 if (sc->sc_needmib && ic->ic_opmode == IEEE80211_M_STA)
2680 sc->sc_imask |= HAL_INT_MIB;
2683 * XXX add capability for this.
2685 * If we're in STA mode (and maybe IBSS?) then register for
2686 * TSFOOR interrupts.
2688 if (ic->ic_opmode == IEEE80211_M_STA)
2689 sc->sc_imask |= HAL_INT_TSFOOR;
2691 /* Enable global TX timeout and carrier sense timeout if available */
2692 if (ath_hal_gtxto_supported(ah))
2693 sc->sc_imask |= HAL_INT_GTT;
2695 DPRINTF(sc, ATH_DEBUG_RESET, "%s: imask=0x%x\n",
2696 __func__, sc->sc_imask);
2699 callout_reset(&sc->sc_wd_ch, hz, ath_watchdog, sc);
2700 ath_hal_intrset(ah, sc->sc_imask);
2702 ath_power_restore_power_state(sc);
2708 ath_stop(struct ath_softc *sc)
2710 struct ath_hal *ah = sc->sc_ah;
2712 ATH_LOCK_ASSERT(sc);
2715 * Wake the hardware up before fiddling with it.
2717 ath_power_set_power_state(sc, HAL_PM_AWAKE);
2719 if (sc->sc_running) {
2721 * Shutdown the hardware and driver:
2722 * reset 802.11 state machine
2724 * disable interrupts
2725 * turn off the radio
2726 * clear transmit machinery
2727 * clear receive machinery
2728 * drain and release tx queues
2729 * reclaim beacon resources
2730 * power down hardware
2732 * Note that some of this work is not possible if the
2733 * hardware is gone (invalid).
2735 #ifdef ATH_TX99_DIAG
2736 if (sc->sc_tx99 != NULL)
2737 sc->sc_tx99->stop(sc->sc_tx99);
2739 callout_stop(&sc->sc_wd_ch);
2740 sc->sc_wd_timer = 0;
2742 if (!sc->sc_invalid) {
2743 if (sc->sc_softled) {
2744 callout_stop(&sc->sc_ledtimer);
2745 ath_hal_gpioset(ah, sc->sc_ledpin,
2747 sc->sc_blinking = 0;
2749 ath_hal_intrset(ah, 0);
2751 /* XXX we should stop RX regardless of whether it's valid */
2752 if (!sc->sc_invalid) {
2753 ath_stoprecv(sc, 1);
2754 ath_hal_phydisable(ah);
2756 sc->sc_rxlink = NULL;
2757 ath_draintxq(sc, ATH_RESET_DEFAULT);
2758 ath_beacon_free(sc); /* XXX not needed */
2761 /* And now, restore the current power state */
2762 ath_power_restore_power_state(sc);
2766 * Wait until all pending TX/RX has completed.
2768 * This waits until all existing transmit, receive and interrupts
2769 * have completed. It's assumed that the caller has first
2770 * grabbed the reset lock so it doesn't try to do overlapping
2773 #define MAX_TXRX_ITERATIONS 100
2775 ath_txrx_stop_locked(struct ath_softc *sc)
2777 int i = MAX_TXRX_ITERATIONS;
2779 ATH_UNLOCK_ASSERT(sc);
2780 ATH_PCU_LOCK_ASSERT(sc);
2783 * Sleep until all the pending operations have completed.
2785 * The caller must ensure that reset has been incremented
2786 * or the pending operations may continue being queued.
2788 while (sc->sc_rxproc_cnt || sc->sc_txproc_cnt ||
2789 sc->sc_txstart_cnt || sc->sc_intr_cnt) {
2792 msleep(sc, &sc->sc_pcu_mtx, 0, "ath_txrx_stop",
2793 msecs_to_ticks(10));
2798 device_printf(sc->sc_dev,
2799 "%s: didn't finish after %d iterations\n",
2800 __func__, MAX_TXRX_ITERATIONS);
2802 #undef MAX_TXRX_ITERATIONS
2806 ath_txrx_stop(struct ath_softc *sc)
2808 ATH_UNLOCK_ASSERT(sc);
2809 ATH_PCU_UNLOCK_ASSERT(sc);
2812 ath_txrx_stop_locked(sc);
2818 ath_txrx_start(struct ath_softc *sc)
2821 taskqueue_unblock(sc->sc_tq);
2825 * Grab the reset lock, and wait around until no one else
2826 * is trying to do anything with it.
2828 * This is totally horrible but we can't hold this lock for
2829 * long enough to do TX/RX or we end up with net80211/ip stack
2830 * LORs and eventual deadlock.
2832 * "dowait" signals whether to spin, waiting for the reset
2833 * lock count to reach 0. This should (for now) only be used
2834 * during the reset path, as the rest of the code may not
2835 * be locking-reentrant enough to behave correctly.
2837 * Another, cleaner way should be found to serialise all of
2840 #define MAX_RESET_ITERATIONS 25
2842 ath_reset_grablock(struct ath_softc *sc, int dowait)
2845 int i = MAX_RESET_ITERATIONS;
2847 ATH_PCU_LOCK_ASSERT(sc);
2849 if (sc->sc_inreset_cnt == 0) {
2859 * 1 tick is likely not enough time for long calibrations
2860 * to complete. So we should wait quite a while.
2862 pause("ath_reset_grablock", msecs_to_ticks(100));
2868 * We always increment the refcounter, regardless
2869 * of whether we succeeded to get it in an exclusive
2872 sc->sc_inreset_cnt++;
2875 device_printf(sc->sc_dev,
2876 "%s: didn't finish after %d iterations\n",
2877 __func__, MAX_RESET_ITERATIONS);
2880 device_printf(sc->sc_dev,
2881 "%s: warning, recursive reset path!\n",
2886 #undef MAX_RESET_ITERATIONS
2889 * Reset the hardware w/o losing operational state. This is
2890 * basically a more efficient way of doing ath_stop, ath_init,
2891 * followed by state transitions to the current 802.11
2892 * operational state. Used to recover from various errors and
2893 * to reset or reload hardware state.
2896 ath_reset(struct ath_softc *sc, ATH_RESET_TYPE reset_type)
2898 struct ieee80211com *ic = &sc->sc_ic;
2899 struct ath_hal *ah = sc->sc_ah;
2903 DPRINTF(sc, ATH_DEBUG_RESET, "%s: called\n", __func__);
2905 /* Ensure ATH_LOCK isn't held; ath_rx_proc can't be locked */
2906 ATH_PCU_UNLOCK_ASSERT(sc);
2907 ATH_UNLOCK_ASSERT(sc);
2909 /* Try to (stop any further TX/RX from occurring */
2910 taskqueue_block(sc->sc_tq);
2913 * Wake the hardware up.
2916 ath_power_set_power_state(sc, HAL_PM_AWAKE);
2922 * Grab the reset lock before TX/RX is stopped.
2924 * This is needed to ensure that when the TX/RX actually does finish,
2925 * no further TX/RX/reset runs in parallel with this.
2927 if (ath_reset_grablock(sc, 1) == 0) {
2928 device_printf(sc->sc_dev, "%s: concurrent reset! Danger!\n",
2932 /* disable interrupts */
2933 ath_hal_intrset(ah, 0);
2936 * Now, ensure that any in progress TX/RX completes before we
2939 ath_txrx_stop_locked(sc);
2944 * Regardless of whether we're doing a no-loss flush or
2945 * not, stop the PCU and handle what's in the RX queue.
2946 * That way frames aren't dropped which shouldn't be.
2948 ath_stoprecv(sc, (reset_type != ATH_RESET_NOLOSS));
2952 * Should now wait for pending TX/RX to complete
2953 * and block future ones from occurring. This needs to be
2954 * done before the TX queue is drained.
2956 ath_draintxq(sc, reset_type); /* stop xmit side */
2958 ath_settkipmic(sc); /* configure TKIP MIC handling */
2959 /* NB: indicate channel change so we do a full reset */
2960 ath_update_chainmasks(sc, ic->ic_curchan);
2961 ath_hal_setchainmasks(sc->sc_ah, sc->sc_cur_txchainmask,
2962 sc->sc_cur_rxchainmask);
2963 if (!ath_hal_reset(ah, sc->sc_opmode, ic->ic_curchan, AH_TRUE,
2964 HAL_RESET_NORMAL, &status))
2965 device_printf(sc->sc_dev,
2966 "%s: unable to reset hardware; hal status %u\n",
2968 sc->sc_diversity = ath_hal_getdiversity(ah);
2971 sc->sc_rx_stopped = 1;
2972 sc->sc_rx_resetted = 1;
2975 /* Quiet time handling - ensure we resync */
2976 ath_vap_clear_quiet_ie(sc);
2978 /* Let DFS at it in case it's a DFS channel */
2979 ath_dfs_radar_enable(sc, ic->ic_curchan);
2981 /* Let spectral at in case spectral is enabled */
2982 ath_spectral_enable(sc, ic->ic_curchan);
2985 * Let bluetooth coexistence at in case it's needed for this channel
2987 ath_btcoex_enable(sc, ic->ic_curchan);
2990 * If we're doing TDMA, enforce the TXOP limitation for chips that
2993 if (sc->sc_hasenforcetxop && sc->sc_tdma)
2994 ath_hal_setenforcetxop(sc->sc_ah, 1);
2996 ath_hal_setenforcetxop(sc->sc_ah, 0);
2998 if (ath_startrecv(sc) != 0) /* restart recv */
2999 device_printf(sc->sc_dev,
3000 "%s: unable to start recv logic\n", __func__);
3002 * We may be doing a reset in response to an ioctl
3003 * that changes the channel so update any state that
3004 * might change as a result.
3006 ath_chan_change(sc, ic->ic_curchan);
3007 if (sc->sc_beacons) { /* restart beacons */
3008 #ifdef IEEE80211_SUPPORT_TDMA
3010 ath_tdma_config(sc, NULL);
3013 ath_beacon_config(sc, NULL);
3017 * Release the reset lock and re-enable interrupts here.
3018 * If an interrupt was being processed in ath_intr(),
3019 * it would disable interrupts at this point. So we have
3020 * to atomically enable interrupts and decrement the
3021 * reset counter - this way ath_intr() doesn't end up
3022 * disabling interrupts without a corresponding enable
3023 * in the rest or channel change path.
3025 * Grab the TX reference in case we need to transmit.
3026 * That way a parallel transmit doesn't.
3029 sc->sc_inreset_cnt--;
3030 sc->sc_txstart_cnt++;
3031 /* XXX only do this if sc_inreset_cnt == 0? */
3032 ath_hal_intrset(ah, sc->sc_imask);
3036 * TX and RX can be started here. If it were started with
3037 * sc_inreset_cnt > 0, the TX and RX path would abort.
3038 * Thus if this is a nested call through the reset or
3039 * channel change code, TX completion will occur but
3040 * RX completion and ath_start / ath_tx_start will not
3044 /* Restart TX/RX as needed */
3047 /* XXX TODO: we need to hold the tx refcount here! */
3049 /* Restart TX completion and pending TX */
3050 if (reset_type == ATH_RESET_NOLOSS) {
3051 for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
3052 if (ATH_TXQ_SETUP(sc, i)) {
3053 ATH_TXQ_LOCK(&sc->sc_txq[i]);
3054 ath_txq_restart_dma(sc, &sc->sc_txq[i]);
3055 ATH_TXQ_UNLOCK(&sc->sc_txq[i]);
3058 ath_txq_sched(sc, &sc->sc_txq[i]);
3065 ath_power_restore_power_state(sc);
3069 sc->sc_txstart_cnt--;
3072 /* Handle any frames in the TX queue */
3074 * XXX should this be done by the caller, rather than
3077 ath_tx_kick(sc); /* restart xmit */
3082 ath_reset_vap(struct ieee80211vap *vap, u_long cmd)
3084 struct ieee80211com *ic = vap->iv_ic;
3085 struct ath_softc *sc = ic->ic_softc;
3086 struct ath_hal *ah = sc->sc_ah;
3089 case IEEE80211_IOC_TXPOWER:
3091 * If per-packet TPC is enabled, then we have nothing
3092 * to do; otherwise we need to force the global limit.
3093 * All this can happen directly; no need to reset.
3095 if (!ath_hal_gettpc(ah))
3096 ath_hal_settxpowlimit(ah, ic->ic_txpowlimit);
3099 /* XXX? Full or NOLOSS? */
3100 return ath_reset(sc, ATH_RESET_FULL);
3104 _ath_getbuf_locked(struct ath_softc *sc, ath_buf_type_t btype)
3108 ATH_TXBUF_LOCK_ASSERT(sc);
3110 if (btype == ATH_BUFTYPE_MGMT)
3111 bf = TAILQ_FIRST(&sc->sc_txbuf_mgmt);
3113 bf = TAILQ_FIRST(&sc->sc_txbuf);
3116 sc->sc_stats.ast_tx_getnobuf++;
3118 if (bf->bf_flags & ATH_BUF_BUSY) {
3119 sc->sc_stats.ast_tx_getbusybuf++;
3124 if (bf != NULL && (bf->bf_flags & ATH_BUF_BUSY) == 0) {
3125 if (btype == ATH_BUFTYPE_MGMT)
3126 TAILQ_REMOVE(&sc->sc_txbuf_mgmt, bf, bf_list);
3128 TAILQ_REMOVE(&sc->sc_txbuf, bf, bf_list);
3132 * This shuldn't happen; however just to be
3133 * safe print a warning and fudge the txbuf
3136 if (sc->sc_txbuf_cnt < 0) {
3137 device_printf(sc->sc_dev,
3138 "%s: sc_txbuf_cnt < 0?\n",
3140 sc->sc_txbuf_cnt = 0;
3147 /* XXX should check which list, mgmt or otherwise */
3148 DPRINTF(sc, ATH_DEBUG_XMIT, "%s: %s\n", __func__,
3149 TAILQ_FIRST(&sc->sc_txbuf) == NULL ?
3150 "out of xmit buffers" : "xmit buffer busy");
3154 /* XXX TODO: should do this at buffer list initialisation */
3155 /* XXX (then, ensure the buffer has the right flag set) */
3157 if (btype == ATH_BUFTYPE_MGMT)
3158 bf->bf_flags |= ATH_BUF_MGMT;
3160 bf->bf_flags &= (~ATH_BUF_MGMT);
3162 /* Valid bf here; clear some basic fields */
3163 bf->bf_next = NULL; /* XXX just to be sure */
3164 bf->bf_last = NULL; /* XXX again, just to be sure */
3165 bf->bf_comp = NULL; /* XXX again, just to be sure */
3166 bzero(&bf->bf_state, sizeof(bf->bf_state));
3169 * Track the descriptor ID only if doing EDMA
3171 if (sc->sc_isedma) {
3172 bf->bf_descid = sc->sc_txbuf_descid;
3173 sc->sc_txbuf_descid++;
3180 * When retrying a software frame, buffers marked ATH_BUF_BUSY
3181 * can't be thrown back on the queue as they could still be
3182 * in use by the hardware.
3184 * This duplicates the buffer, or returns NULL.
3186 * The descriptor is also copied but the link pointers and
3187 * the DMA segments aren't copied; this frame should thus
3188 * be again passed through the descriptor setup/chain routines
3189 * so the link is correct.
3191 * The caller must free the buffer using ath_freebuf().
3194 ath_buf_clone(struct ath_softc *sc, struct ath_buf *bf)
3196 struct ath_buf *tbf;
3198 tbf = ath_getbuf(sc,
3199 (bf->bf_flags & ATH_BUF_MGMT) ?
3200 ATH_BUFTYPE_MGMT : ATH_BUFTYPE_NORMAL);
3202 return NULL; /* XXX failure? Why? */
3205 tbf->bf_next = NULL;
3206 tbf->bf_nseg = bf->bf_nseg;
3207 tbf->bf_flags = bf->bf_flags & ATH_BUF_FLAGS_CLONE;
3208 tbf->bf_status = bf->bf_status;
3209 tbf->bf_m = bf->bf_m;
3210 tbf->bf_node = bf->bf_node;
3211 KASSERT((bf->bf_node != NULL), ("%s: bf_node=NULL!", __func__));
3212 /* will be setup by the chain/setup function */
3213 tbf->bf_lastds = NULL;
3214 /* for now, last == self */
3216 tbf->bf_comp = bf->bf_comp;
3218 /* NOTE: DMA segments will be setup by the setup/chain functions */
3220 /* The caller has to re-init the descriptor + links */
3223 * Free the DMA mapping here, before we NULL the mbuf.
3224 * We must only call bus_dmamap_unload() once per mbuf chain
3225 * or behaviour is undefined.
3227 if (bf->bf_m != NULL) {
3229 * XXX is this POSTWRITE call required?
3231 bus_dmamap_sync(sc->sc_dmat, bf->bf_dmamap,
3232 BUS_DMASYNC_POSTWRITE);
3233 bus_dmamap_unload(sc->sc_dmat, bf->bf_dmamap);
3240 memcpy(&tbf->bf_state, &bf->bf_state, sizeof(bf->bf_state));
3246 ath_getbuf(struct ath_softc *sc, ath_buf_type_t btype)
3251 bf = _ath_getbuf_locked(sc, btype);
3253 * If a mgmt buffer was requested but we're out of those,
3254 * try requesting a normal one.
3256 if (bf == NULL && btype == ATH_BUFTYPE_MGMT)
3257 bf = _ath_getbuf_locked(sc, ATH_BUFTYPE_NORMAL);
3258 ATH_TXBUF_UNLOCK(sc);
3260 DPRINTF(sc, ATH_DEBUG_XMIT, "%s: stop queue\n", __func__);
3261 sc->sc_stats.ast_tx_qstop++;
3267 * Transmit a single frame.
3269 * net80211 will free the node reference if the transmit
3270 * fails, so don't free the node reference here.
3273 ath_transmit(struct ieee80211com *ic, struct mbuf *m)
3275 struct ath_softc *sc = ic->ic_softc;
3276 struct ieee80211_node *ni;
3283 * Tell the reset path that we're currently transmitting.
3286 if (sc->sc_inreset_cnt > 0) {
3287 DPRINTF(sc, ATH_DEBUG_XMIT,
3288 "%s: sc_inreset_cnt > 0; bailing\n", __func__);
3290 sc->sc_stats.ast_tx_qstop++;
3291 ATH_KTR(sc, ATH_KTR_TX, 0, "ath_start_task: OACTIVE, finish");
3292 return (ENOBUFS); /* XXX should be EINVAL or? */
3294 sc->sc_txstart_cnt++;
3297 /* Wake the hardware up already */
3299 ath_power_set_power_state(sc, HAL_PM_AWAKE);
3302 ATH_KTR(sc, ATH_KTR_TX, 0, "ath_transmit: start");
3304 * Grab the TX lock - it's ok to do this here; we haven't
3305 * yet started transmitting.
3310 * Node reference, if there's one.
3312 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif;
3315 * Enforce how deep a node queue can get.
3317 * XXX it would be nicer if we kept an mbuf queue per
3318 * node and only whacked them into ath_bufs when we
3319 * are ready to schedule some traffic from them.
3320 * .. that may come later.
3322 * XXX we should also track the per-node hardware queue
3323 * depth so it is easy to limit the _SUM_ of the swq and
3324 * hwq frames. Since we only schedule two HWQ frames
3325 * at a time, this should be OK for now.
3327 if ((!(m->m_flags & M_EAPOL)) &&
3328 (ATH_NODE(ni)->an_swq_depth > sc->sc_txq_node_maxdepth)) {
3329 sc->sc_stats.ast_tx_nodeq_overflow++;
3335 * Check how many TX buffers are available.
3337 * If this is for non-EAPOL traffic, just leave some
3338 * space free in order for buffer cloning and raw
3339 * frame transmission to occur.
3341 * If it's for EAPOL traffic, ignore this for now.
3342 * Management traffic will be sent via the raw transmit
3343 * method which bypasses this check.
3345 * This is needed to ensure that EAPOL frames during
3346 * (re) keying have a chance to go out.
3348 * See kern/138379 for more information.
3350 if ((!(m->m_flags & M_EAPOL)) &&
3351 (sc->sc_txbuf_cnt <= sc->sc_txq_data_minfree)) {
3352 sc->sc_stats.ast_tx_nobuf++;
3358 * Grab a TX buffer and associated resources.
3360 * If it's an EAPOL frame, allocate a MGMT ath_buf.
3361 * That way even with temporary buffer exhaustion due to
3362 * the data path doesn't leave us without the ability
3363 * to transmit management frames.
3365 * Otherwise allocate a normal buffer.
3367 if (m->m_flags & M_EAPOL)
3368 bf = ath_getbuf(sc, ATH_BUFTYPE_MGMT);
3370 bf = ath_getbuf(sc, ATH_BUFTYPE_NORMAL);
3374 * If we failed to allocate a buffer, fail.
3376 * We shouldn't fail normally, due to the check
3379 sc->sc_stats.ast_tx_nobuf++;
3385 * At this point we have a buffer; so we need to free it
3386 * if we hit any error conditions.
3390 * Check for fragmentation. If this frame
3391 * has been broken up verify we have enough
3392 * buffers to send all the fragments so all
3396 if ((m->m_flags & M_FRAG) &&
3397 !ath_txfrag_setup(sc, &frags, m, ni)) {
3398 DPRINTF(sc, ATH_DEBUG_XMIT,
3399 "%s: out of txfrag buffers\n", __func__);
3400 sc->sc_stats.ast_tx_nofrag++;
3401 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1);
3403 * XXXGL: is mbuf valid after ath_txfrag_setup? If yes,
3404 * we shouldn't free it but return back.
3406 ieee80211_free_mbuf(m);
3412 * At this point if we have any TX fragments, then we will
3413 * have bumped the node reference once for each of those.
3417 * XXX Is there anything actually _enforcing_ that the
3418 * fragments are being transmitted in one hit, rather than
3419 * being interleaved with other transmissions on that
3422 * The ATH TX output lock is the only thing serialising this
3427 * Calculate the "next fragment" length field in ath_buf
3428 * in order to let the transmit path know enough about
3429 * what to next write to the hardware.
3431 if (m->m_flags & M_FRAG) {
3432 struct ath_buf *fbf = bf;
3433 struct ath_buf *n_fbf = NULL;
3434 struct mbuf *fm = m->m_nextpkt;
3437 * We need to walk the list of fragments and set
3438 * the next size to the following buffer.
3439 * However, the first buffer isn't in the frag
3440 * list, so we have to do some gymnastics here.
3442 TAILQ_FOREACH(n_fbf, &frags, bf_list) {
3443 fbf->bf_nextfraglen = fm->m_pkthdr.len;
3451 * Pass the frame to the h/w for transmission.
3452 * Fragmented frames have each frag chained together
3453 * with m_nextpkt. We know there are sufficient ath_buf's
3454 * to send all the frags because of work done by
3455 * ath_txfrag_setup. We leave m_nextpkt set while
3456 * calling ath_tx_start so it can use it to extend the
3457 * the tx duration to cover the subsequent frag and
3458 * so it can reclaim all the mbufs in case of an error;
3459 * ath_tx_start clears m_nextpkt once it commits to
3460 * handing the frame to the hardware.
3462 * Note: if this fails, then the mbufs are freed but
3463 * not the node reference.
3465 * So, we now have to free the node reference ourselves here
3466 * and return OK up to the stack.
3468 next = m->m_nextpkt;
3469 if (ath_tx_start(sc, ni, bf, m)) {
3471 if_inc_counter(ni->ni_vap->iv_ifp, IFCOUNTER_OERRORS, 1);
3476 ath_returnbuf_head(sc, bf);
3478 * Free the rest of the node references and
3479 * buffers for the fragment list.
3481 ath_txfrag_cleanup(sc, &frags, ni);
3482 ATH_TXBUF_UNLOCK(sc);
3485 * XXX: And free the node/return OK; ath_tx_start() may have
3486 * modified the buffer. We currently have no way to
3487 * signify that the mbuf was freed but there was an error.
3489 ieee80211_free_node(ni);
3495 * Check here if the node is in power save state.
3497 ath_tx_update_tim(sc, ni, 1);
3501 * Beware of state changing between frags.
3502 * XXX check sta power-save state?
3504 if (ni->ni_vap->iv_state != IEEE80211_S_RUN) {
3505 DPRINTF(sc, ATH_DEBUG_XMIT,
3506 "%s: flush fragmented packet, state %s\n",
3508 ieee80211_state_name[ni->ni_vap->iv_state]);
3510 ieee80211_free_mbuf(next);
3514 bf = TAILQ_FIRST(&frags);
3515 KASSERT(bf != NULL, ("no buf for txfrag"));
3516 TAILQ_REMOVE(&frags, bf, bf_list);
3521 * Bump watchdog timer.
3523 sc->sc_wd_timer = 5;
3529 * Finished transmitting!
3532 sc->sc_txstart_cnt--;
3535 /* Sleep the hardware if required */
3537 ath_power_restore_power_state(sc);
3540 ATH_KTR(sc, ATH_KTR_TX, 0, "ath_transmit: finished");
3546 ath_media_change(struct ifnet *ifp)
3548 int error = ieee80211_media_change(ifp);
3549 /* NB: only the fixed rate can change and that doesn't need a reset */
3550 return (error == ENETRESET ? 0 : error);
3554 * Block/unblock tx+rx processing while a key change is done.
3555 * We assume the caller serializes key management operations
3556 * so we only need to worry about synchronization with other
3557 * uses that originate in the driver.
3560 ath_key_update_begin(struct ieee80211vap *vap)
3562 struct ath_softc *sc = vap->iv_ic->ic_softc;
3564 DPRINTF(sc, ATH_DEBUG_KEYCACHE, "%s:\n", __func__);
3565 taskqueue_block(sc->sc_tq);
3569 ath_key_update_end(struct ieee80211vap *vap)
3571 struct ath_softc *sc = vap->iv_ic->ic_softc;
3573 DPRINTF(sc, ATH_DEBUG_KEYCACHE, "%s:\n", __func__);
3574 taskqueue_unblock(sc->sc_tq);
3578 ath_update_promisc(struct ieee80211com *ic)
3580 struct ath_softc *sc = ic->ic_softc;
3583 /* configure rx filter */
3585 ath_power_set_power_state(sc, HAL_PM_AWAKE);
3586 rfilt = ath_calcrxfilter(sc);
3587 ath_hal_setrxfilter(sc->sc_ah, rfilt);
3588 ath_power_restore_power_state(sc);
3591 DPRINTF(sc, ATH_DEBUG_MODE, "%s: RX filter 0x%x\n", __func__, rfilt);
3595 ath_hash_maddr(void *arg, struct sockaddr_dl *sdl, u_int cnt)
3597 uint32_t val, *mfilt = arg;
3601 /* calculate XOR of eight 6bit values */
3603 val = le32dec(dl + 0);
3604 pos = (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val;
3605 val = le32dec(dl + 3);
3606 pos ^= (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val;
3608 mfilt[pos / 32] |= (1 << (pos % 32));
3614 * Driver-internal mcast update call.
3616 * Assumes the hardware is already awake.
3619 ath_update_mcast_hw(struct ath_softc *sc)
3621 struct ieee80211com *ic = &sc->sc_ic;
3624 /* calculate and install multicast filter */
3625 if (ic->ic_allmulti == 0) {
3626 struct ieee80211vap *vap;
3629 * Merge multicast addresses to form the hardware filter.
3631 mfilt[0] = mfilt[1] = 0;
3632 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
3633 if_foreach_llmaddr(vap->iv_ifp, ath_hash_maddr, &mfilt);
3635 mfilt[0] = mfilt[1] = ~0;
3637 ath_hal_setmcastfilter(sc->sc_ah, mfilt[0], mfilt[1]);
3639 DPRINTF(sc, ATH_DEBUG_MODE, "%s: MC filter %08x:%08x\n",
3640 __func__, mfilt[0], mfilt[1]);
3644 * Called from the net80211 layer - force the hardware
3645 * awake before operating.
3648 ath_update_mcast(struct ieee80211com *ic)
3650 struct ath_softc *sc = ic->ic_softc;
3653 ath_power_set_power_state(sc, HAL_PM_AWAKE);
3656 ath_update_mcast_hw(sc);
3659 ath_power_restore_power_state(sc);
3664 ath_mode_init(struct ath_softc *sc)
3666 struct ieee80211com *ic = &sc->sc_ic;
3667 struct ath_hal *ah = sc->sc_ah;
3670 /* XXX power state? */
3672 /* configure rx filter */
3673 rfilt = ath_calcrxfilter(sc);
3674 ath_hal_setrxfilter(ah, rfilt);
3676 /* configure operational mode */
3677 ath_hal_setopmode(ah);
3679 /* handle any link-level address change */
3680 ath_hal_setmac(ah, ic->ic_macaddr);
3682 /* calculate and install multicast filter */
3683 ath_update_mcast_hw(sc);
3687 * Set the slot time based on the current setting.
3690 ath_setslottime(struct ath_softc *sc)
3692 struct ieee80211com *ic = &sc->sc_ic;
3693 struct ath_hal *ah = sc->sc_ah;
3696 if (IEEE80211_IS_CHAN_HALF(ic->ic_curchan))
3698 else if (IEEE80211_IS_CHAN_QUARTER(ic->ic_curchan))
3700 else if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan)) {
3701 /* honor short/long slot time only in 11g */
3702 /* XXX shouldn't honor on pure g or turbo g channel */
3703 if (ic->ic_flags & IEEE80211_F_SHSLOT)
3704 usec = HAL_SLOT_TIME_9;
3706 usec = HAL_SLOT_TIME_20;
3708 usec = HAL_SLOT_TIME_9;
3710 DPRINTF(sc, ATH_DEBUG_RESET,
3711 "%s: chan %u MHz flags 0x%x %s slot, %u usec\n",
3712 __func__, ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags,
3713 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", usec);
3715 /* Wake up the hardware first before updating the slot time */
3717 ath_power_set_power_state(sc, HAL_PM_AWAKE);
3718 ath_hal_setslottime(ah, usec);
3719 ath_power_restore_power_state(sc);
3720 sc->sc_updateslot = OK;
3725 * Callback from the 802.11 layer to update the
3726 * slot time based on the current setting.
3729 ath_updateslot(struct ieee80211com *ic)
3731 struct ath_softc *sc = ic->ic_softc;
3734 * When not coordinating the BSS, change the hardware
3735 * immediately. For other operation we defer the change
3736 * until beacon updates have propagated to the stations.
3738 * XXX sc_updateslot isn't changed behind a lock?
3740 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
3741 ic->ic_opmode == IEEE80211_M_MBSS)
3742 sc->sc_updateslot = UPDATE;
3744 ath_setslottime(sc);
3748 * Append the contents of src to dst; both queues
3749 * are assumed to be locked.
3752 ath_txqmove(struct ath_txq *dst, struct ath_txq *src)
3755 ATH_TXQ_LOCK_ASSERT(src);
3756 ATH_TXQ_LOCK_ASSERT(dst);
3758 TAILQ_CONCAT(&dst->axq_q, &src->axq_q, bf_list);
3759 dst->axq_link = src->axq_link;
3760 src->axq_link = NULL;
3761 dst->axq_depth += src->axq_depth;
3762 dst->axq_aggr_depth += src->axq_aggr_depth;
3764 src->axq_aggr_depth = 0;
3768 * Reset the hardware, with no loss.
3770 * This can't be used for a general case reset.
3773 ath_reset_proc(void *arg, int pending)
3775 struct ath_softc *sc = arg;
3778 device_printf(sc->sc_dev, "%s: resetting\n", __func__);
3780 ath_reset(sc, ATH_RESET_NOLOSS);
3784 * Reset the hardware after detecting beacons have stopped.
3787 ath_bstuck_proc(void *arg, int pending)
3789 struct ath_softc *sc = arg;
3792 if (ath_hal_gethangstate(sc->sc_ah, 0xff, &hangs) && hangs != 0)
3793 device_printf(sc->sc_dev, "bb hang detected (0x%x)\n", hangs);
3795 #ifdef ATH_DEBUG_ALQ
3796 if (if_ath_alq_checkdebug(&sc->sc_alq, ATH_ALQ_STUCK_BEACON))
3797 if_ath_alq_post(&sc->sc_alq, ATH_ALQ_STUCK_BEACON, 0, NULL);
3800 device_printf(sc->sc_dev, "stuck beacon; resetting (bmiss count %u)\n",
3802 sc->sc_stats.ast_bstuck++;
3804 * This assumes that there's no simultaneous channel mode change
3807 ath_reset(sc, ATH_RESET_NOLOSS);
3811 ath_desc_alloc(struct ath_softc *sc)
3815 error = ath_descdma_setup(sc, &sc->sc_txdma, &sc->sc_txbuf,
3816 "tx", sc->sc_tx_desclen, ath_txbuf, ATH_MAX_SCATTER);
3820 sc->sc_txbuf_cnt = ath_txbuf;
3822 error = ath_descdma_setup(sc, &sc->sc_txdma_mgmt, &sc->sc_txbuf_mgmt,
3823 "tx_mgmt", sc->sc_tx_desclen, ath_txbuf_mgmt,
3826 ath_descdma_cleanup(sc, &sc->sc_txdma, &sc->sc_txbuf);
3831 * XXX mark txbuf_mgmt frames with ATH_BUF_MGMT, so the
3832 * flag doesn't have to be set in ath_getbuf_locked().
3835 error = ath_descdma_setup(sc, &sc->sc_bdma, &sc->sc_bbuf,
3836 "beacon", sc->sc_tx_desclen, ATH_BCBUF, 1);
3838 ath_descdma_cleanup(sc, &sc->sc_txdma, &sc->sc_txbuf);
3839 ath_descdma_cleanup(sc, &sc->sc_txdma_mgmt,
3840 &sc->sc_txbuf_mgmt);
3847 ath_desc_free(struct ath_softc *sc)
3850 if (sc->sc_bdma.dd_desc_len != 0)
3851 ath_descdma_cleanup(sc, &sc->sc_bdma, &sc->sc_bbuf);
3852 if (sc->sc_txdma.dd_desc_len != 0)
3853 ath_descdma_cleanup(sc, &sc->sc_txdma, &sc->sc_txbuf);
3854 if (sc->sc_txdma_mgmt.dd_desc_len != 0)
3855 ath_descdma_cleanup(sc, &sc->sc_txdma_mgmt,
3856 &sc->sc_txbuf_mgmt);
3859 static struct ieee80211_node *
3860 ath_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
3862 struct ieee80211com *ic = vap->iv_ic;
3863 struct ath_softc *sc = ic->ic_softc;
3864 const size_t space = sizeof(struct ath_node) + sc->sc_rc->arc_space;
3865 struct ath_node *an;
3867 an = malloc(space, M_80211_NODE, M_NOWAIT|M_ZERO);
3872 ath_rate_node_init(sc, an);
3874 /* Setup the mutex - there's no associd yet so set the name to NULL */
3875 snprintf(an->an_name, sizeof(an->an_name), "%s: node %p",
3876 device_get_nameunit(sc->sc_dev), an);
3877 mtx_init(&an->an_mtx, an->an_name, NULL, MTX_DEF);
3879 /* XXX setup ath_tid */
3880 ath_tx_tid_init(sc, an);
3882 an->an_node_stats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
3883 an->an_node_stats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
3884 an->an_node_stats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
3886 DPRINTF(sc, ATH_DEBUG_NODE, "%s: %6D: an %p\n", __func__, mac, ":", an);
3887 return &an->an_node;
3891 ath_node_cleanup(struct ieee80211_node *ni)
3893 struct ieee80211com *ic = ni->ni_ic;
3894 struct ath_softc *sc = ic->ic_softc;
3896 DPRINTF(sc, ATH_DEBUG_NODE, "%s: %6D: an %p\n", __func__,
3897 ni->ni_macaddr, ":", ATH_NODE(ni));
3899 /* Cleanup ath_tid, free unused bufs, unlink bufs in TXQ */
3900 ath_tx_node_flush(sc, ATH_NODE(ni));
3901 ath_rate_node_cleanup(sc, ATH_NODE(ni));
3902 sc->sc_node_cleanup(ni);
3906 ath_node_free(struct ieee80211_node *ni)
3908 struct ieee80211com *ic = ni->ni_ic;
3909 struct ath_softc *sc = ic->ic_softc;
3911 DPRINTF(sc, ATH_DEBUG_NODE, "%s: %6D: an %p\n", __func__,
3912 ni->ni_macaddr, ":", ATH_NODE(ni));
3913 mtx_destroy(&ATH_NODE(ni)->an_mtx);
3914 sc->sc_node_free(ni);
3918 ath_node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
3920 struct ieee80211com *ic = ni->ni_ic;
3921 struct ath_softc *sc = ic->ic_softc;
3922 struct ath_hal *ah = sc->sc_ah;
3924 *rssi = ic->ic_node_getrssi(ni);
3925 if (ni->ni_chan != IEEE80211_CHAN_ANYC)
3926 *noise = ath_hal_getchannoise(ah, ni->ni_chan);
3928 *noise = -95; /* nominally correct */
3932 * Set the default antenna.
3935 ath_setdefantenna(struct ath_softc *sc, u_int antenna)
3937 struct ath_hal *ah = sc->sc_ah;
3939 /* XXX block beacon interrupts */
3940 ath_hal_setdefantenna(ah, antenna);
3941 if (sc->sc_defant != antenna)
3942 sc->sc_stats.ast_ant_defswitch++;
3943 sc->sc_defant = antenna;
3944 sc->sc_rxotherant = 0;
3948 ath_txq_init(struct ath_softc *sc, struct ath_txq *txq, int qnum)
3950 txq->axq_qnum = qnum;
3953 txq->axq_aggr_depth = 0;
3954 txq->axq_intrcnt = 0;
3955 txq->axq_link = NULL;
3956 txq->axq_softc = sc;
3957 TAILQ_INIT(&txq->axq_q);
3958 TAILQ_INIT(&txq->axq_tidq);
3959 TAILQ_INIT(&txq->fifo.axq_q);
3960 ATH_TXQ_LOCK_INIT(sc, txq);
3964 * Setup a h/w transmit queue.
3966 static struct ath_txq *
3967 ath_txq_setup(struct ath_softc *sc, int qtype, int subtype)
3969 struct ath_hal *ah = sc->sc_ah;
3973 memset(&qi, 0, sizeof(qi));
3974 qi.tqi_subtype = subtype;
3975 qi.tqi_aifs = HAL_TXQ_USEDEFAULT;
3976 qi.tqi_cwmin = HAL_TXQ_USEDEFAULT;
3977 qi.tqi_cwmax = HAL_TXQ_USEDEFAULT;
3979 * Enable interrupts only for EOL and DESC conditions.
3980 * We mark tx descriptors to receive a DESC interrupt
3981 * when a tx queue gets deep; otherwise waiting for the
3982 * EOL to reap descriptors. Note that this is done to
3983 * reduce interrupt load and this only defers reaping
3984 * descriptors, never transmitting frames. Aside from
3985 * reducing interrupts this also permits more concurrency.
3986 * The only potential downside is if the tx queue backs
3987 * up in which case the top half of the kernel may backup
3988 * due to a lack of tx descriptors.
3991 qi.tqi_qflags = HAL_TXQ_TXEOLINT_ENABLE |
3992 HAL_TXQ_TXOKINT_ENABLE;
3994 qi.tqi_qflags = HAL_TXQ_TXEOLINT_ENABLE |
3995 HAL_TXQ_TXDESCINT_ENABLE;
3997 qnum = ath_hal_setuptxqueue(ah, qtype, &qi);
4000 * NB: don't print a message, this happens
4001 * normally on parts with too few tx queues
4005 if (qnum >= nitems(sc->sc_txq)) {
4006 device_printf(sc->sc_dev,
4007 "hal qnum %u out of range, max %zu!\n",
4008 qnum, nitems(sc->sc_txq));
4009 ath_hal_releasetxqueue(ah, qnum);
4012 if (!ATH_TXQ_SETUP(sc, qnum)) {
4013 ath_txq_init(sc, &sc->sc_txq[qnum], qnum);
4014 sc->sc_txqsetup |= 1<<qnum;
4016 return &sc->sc_txq[qnum];
4020 * Setup a hardware data transmit queue for the specified
4021 * access control. The hal may not support all requested
4022 * queues in which case it will return a reference to a
4023 * previously setup queue. We record the mapping from ac's
4024 * to h/w queues for use by ath_tx_start and also track
4025 * the set of h/w queues being used to optimize work in the
4026 * transmit interrupt handler and related routines.
4029 ath_tx_setup(struct ath_softc *sc, int ac, int haltype)
4031 struct ath_txq *txq;
4033 if (ac >= nitems(sc->sc_ac2q)) {
4034 device_printf(sc->sc_dev, "AC %u out of range, max %zu!\n",
4035 ac, nitems(sc->sc_ac2q));
4038 txq = ath_txq_setup(sc, HAL_TX_QUEUE_DATA, haltype);
4041 sc->sc_ac2q[ac] = txq;
4048 * Update WME parameters for a transmit queue.
4051 ath_txq_update(struct ath_softc *sc, int ac)
4053 #define ATH_EXPONENT_TO_VALUE(v) ((1<<v)-1)
4054 struct ieee80211com *ic = &sc->sc_ic;
4055 struct ath_txq *txq = sc->sc_ac2q[ac];
4056 struct chanAccParams chp;
4057 struct wmeParams *wmep;
4058 struct ath_hal *ah = sc->sc_ah;
4061 ieee80211_wme_ic_getparams(ic, &chp);
4062 wmep = &chp.cap_wmeParams[ac];
4064 ath_hal_gettxqueueprops(ah, txq->axq_qnum, &qi);
4065 #ifdef IEEE80211_SUPPORT_TDMA
4068 * AIFS is zero so there's no pre-transmit wait. The
4069 * burst time defines the slot duration and is configured
4070 * through net80211. The QCU is setup to not do post-xmit
4071 * back off, lockout all lower-priority QCU's, and fire
4072 * off the DMA beacon alert timer which is setup based
4073 * on the slot configuration.
4075 qi.tqi_qflags = HAL_TXQ_TXOKINT_ENABLE
4076 | HAL_TXQ_TXERRINT_ENABLE
4077 | HAL_TXQ_TXURNINT_ENABLE
4078 | HAL_TXQ_TXEOLINT_ENABLE
4080 | HAL_TXQ_BACKOFF_DISABLE
4081 | HAL_TXQ_ARB_LOCKOUT_GLOBAL
4085 qi.tqi_readyTime = sc->sc_tdmaslotlen;
4086 qi.tqi_burstTime = qi.tqi_readyTime;
4090 * XXX shouldn't this just use the default flags
4091 * used in the previous queue setup?
4093 qi.tqi_qflags = HAL_TXQ_TXOKINT_ENABLE
4094 | HAL_TXQ_TXERRINT_ENABLE
4095 | HAL_TXQ_TXDESCINT_ENABLE
4096 | HAL_TXQ_TXURNINT_ENABLE
4097 | HAL_TXQ_TXEOLINT_ENABLE
4099 qi.tqi_aifs = wmep->wmep_aifsn;
4100 qi.tqi_cwmin = ATH_EXPONENT_TO_VALUE(wmep->wmep_logcwmin);
4101 qi.tqi_cwmax = ATH_EXPONENT_TO_VALUE(wmep->wmep_logcwmax);
4102 qi.tqi_readyTime = 0;
4103 qi.tqi_burstTime = IEEE80211_TXOP_TO_US(wmep->wmep_txopLimit);
4104 #ifdef IEEE80211_SUPPORT_TDMA
4108 DPRINTF(sc, ATH_DEBUG_RESET,
4109 "%s: Q%u qflags 0x%x aifs %u cwmin %u cwmax %u burstTime %u\n",
4110 __func__, txq->axq_qnum, qi.tqi_qflags,
4111 qi.tqi_aifs, qi.tqi_cwmin, qi.tqi_cwmax, qi.tqi_burstTime);
4113 if (!ath_hal_settxqueueprops(ah, txq->axq_qnum, &qi)) {
4114 device_printf(sc->sc_dev, "unable to update hardware queue "
4115 "parameters for %s traffic!\n", ieee80211_wme_acnames[ac]);
4118 ath_hal_resettxqueue(ah, txq->axq_qnum); /* push to h/w */
4121 #undef ATH_EXPONENT_TO_VALUE
4125 * Callback from the 802.11 layer to update WME parameters.
4128 ath_wme_update(struct ieee80211com *ic)
4130 struct ath_softc *sc = ic->ic_softc;
4132 return !ath_txq_update(sc, WME_AC_BE) ||
4133 !ath_txq_update(sc, WME_AC_BK) ||
4134 !ath_txq_update(sc, WME_AC_VI) ||
4135 !ath_txq_update(sc, WME_AC_VO) ? EIO : 0;
4139 * Reclaim resources for a setup queue.
4142 ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq)
4145 ath_hal_releasetxqueue(sc->sc_ah, txq->axq_qnum);
4146 sc->sc_txqsetup &= ~(1<<txq->axq_qnum);
4147 ATH_TXQ_LOCK_DESTROY(txq);
4151 * Reclaim all tx queue resources.
4154 ath_tx_cleanup(struct ath_softc *sc)
4158 ATH_TXBUF_LOCK_DESTROY(sc);
4159 for (i = 0; i < HAL_NUM_TX_QUEUES; i++)
4160 if (ATH_TXQ_SETUP(sc, i))
4161 ath_tx_cleanupq(sc, &sc->sc_txq[i]);
4165 * Return h/w rate index for an IEEE rate (w/o basic rate bit)
4166 * using the current rates in sc_rixmap.
4169 ath_tx_findrix(const struct ath_softc *sc, uint8_t rate)
4171 int rix = sc->sc_rixmap[rate];
4172 /* NB: return lowest rix for invalid rate */
4173 return (rix == 0xff ? 0 : rix);
4177 ath_tx_update_stats(struct ath_softc *sc, struct ath_tx_status *ts,
4180 struct ieee80211_node *ni = bf->bf_node;
4181 struct ieee80211com *ic = &sc->sc_ic;
4184 if (ts->ts_status == 0) {
4185 u_int8_t txant = ts->ts_antenna;
4186 sc->sc_stats.ast_ant_tx[txant]++;
4187 sc->sc_ant_tx[txant]++;
4188 if (ts->ts_finaltsi != 0)
4189 sc->sc_stats.ast_tx_altrate++;
4191 /* XXX TODO: should do per-pri conuters */
4192 pri = M_WME_GETAC(bf->bf_m);
4193 if (pri >= WME_AC_VO)
4194 ic->ic_wme.wme_hipri_traffic++;
4196 if ((bf->bf_state.bfs_txflags & HAL_TXDESC_NOACK) == 0)
4197 ni->ni_inact = ni->ni_inact_reload;
4199 if (ts->ts_status & HAL_TXERR_XRETRY)
4200 sc->sc_stats.ast_tx_xretries++;
4201 if (ts->ts_status & HAL_TXERR_FIFO)
4202 sc->sc_stats.ast_tx_fifoerr++;
4203 if (ts->ts_status & HAL_TXERR_FILT)
4204 sc->sc_stats.ast_tx_filtered++;
4205 if (ts->ts_status & HAL_TXERR_XTXOP)
4206 sc->sc_stats.ast_tx_xtxop++;
4207 if (ts->ts_status & HAL_TXERR_TIMER_EXPIRED)
4208 sc->sc_stats.ast_tx_timerexpired++;
4210 if (bf->bf_m->m_flags & M_FF)
4211 sc->sc_stats.ast_ff_txerr++;
4213 /* XXX when is this valid? */
4214 if (ts->ts_flags & HAL_TX_DESC_CFG_ERR)
4215 sc->sc_stats.ast_tx_desccfgerr++;
4217 * This can be valid for successful frame transmission!
4218 * If there's a TX FIFO underrun during aggregate transmission,
4219 * the MAC will pad the rest of the aggregate with delimiters.
4220 * If a BA is returned, the frame is marked as "OK" and it's up
4221 * to the TX completion code to notice which frames weren't
4222 * successfully transmitted.
4224 if (ts->ts_flags & HAL_TX_DATA_UNDERRUN)
4225 sc->sc_stats.ast_tx_data_underrun++;
4226 if (ts->ts_flags & HAL_TX_DELIM_UNDERRUN)
4227 sc->sc_stats.ast_tx_delim_underrun++;
4229 sr = ts->ts_shortretry;
4230 lr = ts->ts_longretry;
4231 sc->sc_stats.ast_tx_shortretry += sr;
4232 sc->sc_stats.ast_tx_longretry += lr;
4237 * The default completion. If fail is 1, this means
4238 * "please don't retry the frame, and just return -1 status
4239 * to the net80211 stack.
4242 ath_tx_default_comp(struct ath_softc *sc, struct ath_buf *bf, int fail)
4244 struct ath_tx_status *ts = &bf->bf_status.ds_txstat;
4250 st = ((bf->bf_state.bfs_txflags & HAL_TXDESC_NOACK) == 0) ?
4251 ts->ts_status : HAL_TXERR_XRETRY;
4254 if (bf->bf_state.bfs_dobaw)
4255 device_printf(sc->sc_dev,
4256 "%s: bf %p: seqno %d: dobaw should've been cleared!\n",
4259 SEQNO(bf->bf_state.bfs_seqno));
4261 if (bf->bf_next != NULL)
4262 device_printf(sc->sc_dev,
4263 "%s: bf %p: seqno %d: bf_next not NULL!\n",
4266 SEQNO(bf->bf_state.bfs_seqno));
4269 * Check if the node software queue is empty; if so
4270 * then clear the TIM.
4272 * This needs to be done before the buffer is freed as
4273 * otherwise the node reference will have been released
4274 * and the node may not actually exist any longer.
4276 * XXX I don't like this belonging here, but it's cleaner
4277 * to do it here right now then all the other places
4278 * where ath_tx_default_comp() is called.
4280 * XXX TODO: during drain, ensure that the callback is
4281 * being called so we get a chance to update the TIM.
4285 ath_tx_update_tim(sc, bf->bf_node, 0);
4290 * Do any tx complete callback. Note this must
4291 * be done before releasing the node reference.
4292 * This will free the mbuf, release the net80211
4293 * node and recycle the ath_buf.
4295 ath_tx_freebuf(sc, bf, st);
4299 * Update rate control with the given completion status.
4302 ath_tx_update_ratectrl(struct ath_softc *sc, struct ieee80211_node *ni,
4303 struct ath_rc_series *rc, struct ath_tx_status *ts, int frmlen,
4304 int nframes, int nbad)
4306 struct ath_node *an;
4308 /* Only for unicast frames */
4313 ATH_NODE_UNLOCK_ASSERT(an);
4315 if ((ts->ts_status & HAL_TXERR_FILT) == 0) {
4317 ath_rate_tx_complete(sc, an, rc, ts, frmlen, nframes, nbad);
4318 ATH_NODE_UNLOCK(an);
4323 * Process the completion of the given buffer.
4325 * This calls the rate control update and then the buffer completion.
4326 * This will either free the buffer or requeue it. In any case, the
4327 * bf pointer should be treated as invalid after this function is called.
4330 ath_tx_process_buf_completion(struct ath_softc *sc, struct ath_txq *txq,
4331 struct ath_tx_status *ts, struct ath_buf *bf)
4333 struct ieee80211_node *ni = bf->bf_node;
4335 ATH_TX_UNLOCK_ASSERT(sc);
4336 ATH_TXQ_UNLOCK_ASSERT(txq);
4338 /* If unicast frame, update general statistics */
4340 /* update statistics */
4341 ath_tx_update_stats(sc, ts, bf);
4345 * Call the completion handler.
4346 * The completion handler is responsible for
4347 * calling the rate control code.
4349 * Frames with no completion handler get the
4350 * rate control code called here.
4352 if (bf->bf_comp == NULL) {
4353 if ((ts->ts_status & HAL_TXERR_FILT) == 0 &&
4354 (bf->bf_state.bfs_txflags & HAL_TXDESC_NOACK) == 0) {
4356 * XXX assume this isn't an aggregate
4359 ath_tx_update_ratectrl(sc, ni,
4360 bf->bf_state.bfs_rc, ts,
4361 bf->bf_state.bfs_pktlen, 1,
4362 (ts->ts_status == 0 ? 0 : 1));
4364 ath_tx_default_comp(sc, bf, 0);
4366 bf->bf_comp(sc, bf, 0);
4372 * Process completed xmit descriptors from the specified queue.
4373 * Kick the packet scheduler if needed. This can occur from this
4377 ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq, int dosched)
4379 struct ath_hal *ah = sc->sc_ah;
4381 struct ath_desc *ds;
4382 struct ath_tx_status *ts;
4383 struct ieee80211_node *ni;
4384 #ifdef IEEE80211_SUPPORT_SUPERG
4385 struct ieee80211com *ic = &sc->sc_ic;
4386 #endif /* IEEE80211_SUPPORT_SUPERG */
4390 DPRINTF(sc, ATH_DEBUG_TX_PROC, "%s: tx queue %u head %p link %p\n",
4391 __func__, txq->axq_qnum,
4392 (caddr_t)(uintptr_t) ath_hal_gettxbuf(sc->sc_ah, txq->axq_qnum),
4395 ATH_KTR(sc, ATH_KTR_TXCOMP, 4,
4396 "ath_tx_processq: txq=%u head %p link %p depth %p",
4398 (caddr_t)(uintptr_t) ath_hal_gettxbuf(sc->sc_ah, txq->axq_qnum),
4405 txq->axq_intrcnt = 0; /* reset periodic desc intr count */
4406 bf = TAILQ_FIRST(&txq->axq_q);
4408 ATH_TXQ_UNLOCK(txq);
4411 ds = bf->bf_lastds; /* XXX must be setup correctly! */
4412 ts = &bf->bf_status.ds_txstat;
4414 status = ath_hal_txprocdesc(ah, ds, ts);
4416 if (sc->sc_debug & ATH_DEBUG_XMIT_DESC)
4417 ath_printtxbuf(sc, bf, txq->axq_qnum, 0,
4419 else if ((sc->sc_debug & ATH_DEBUG_RESET) && (dosched == 0))
4420 ath_printtxbuf(sc, bf, txq->axq_qnum, 0,
4423 #ifdef ATH_DEBUG_ALQ
4424 if (if_ath_alq_checkdebug(&sc->sc_alq,
4425 ATH_ALQ_EDMA_TXSTATUS)) {
4426 if_ath_alq_post(&sc->sc_alq, ATH_ALQ_EDMA_TXSTATUS,
4427 sc->sc_tx_statuslen,
4432 if (status == HAL_EINPROGRESS) {
4433 ATH_KTR(sc, ATH_KTR_TXCOMP, 3,
4434 "ath_tx_processq: txq=%u, bf=%p ds=%p, HAL_EINPROGRESS",
4435 txq->axq_qnum, bf, ds);
4436 ATH_TXQ_UNLOCK(txq);
4439 ATH_TXQ_REMOVE(txq, bf, bf_list);
4444 if (txq->axq_qnum != bf->bf_state.bfs_tx_queue) {
4445 device_printf(sc->sc_dev,
4446 "%s: TXQ=%d: bf=%p, bfs_tx_queue=%d\n",
4450 bf->bf_state.bfs_tx_queue);
4452 if (txq->axq_qnum != bf->bf_last->bf_state.bfs_tx_queue) {
4453 device_printf(sc->sc_dev,
4454 "%s: TXQ=%d: bf_last=%p, bfs_tx_queue=%d\n",
4458 bf->bf_last->bf_state.bfs_tx_queue);
4462 if (txq->axq_depth > 0) {
4464 * More frames follow. Mark the buffer busy
4465 * so it's not re-used while the hardware may
4466 * still re-read the link field in the descriptor.
4468 * Use the last buffer in an aggregate as that
4469 * is where the hardware may be - intermediate
4470 * descriptors won't be "busy".
4472 bf->bf_last->bf_flags |= ATH_BUF_BUSY;
4474 txq->axq_link = NULL;
4476 bf->bf_last->bf_flags |= ATH_BUF_BUSY;
4478 if (bf->bf_state.bfs_aggr)
4479 txq->axq_aggr_depth--;
4483 ATH_KTR(sc, ATH_KTR_TXCOMP, 5,
4484 "ath_tx_processq: txq=%u, bf=%p, ds=%p, ni=%p, ts_status=0x%08x",
4485 txq->axq_qnum, bf, ds, ni, ts->ts_status);
4487 * If unicast frame was ack'd update RSSI,
4488 * including the last rx time used to
4489 * workaround phantom bmiss interrupts.
4491 if (ni != NULL && ts->ts_status == 0 &&
4492 ((bf->bf_state.bfs_txflags & HAL_TXDESC_NOACK) == 0)) {
4494 sc->sc_stats.ast_tx_rssi = ts->ts_rssi;
4495 ATH_RSSI_LPF(sc->sc_halstats.ns_avgtxrssi,
4497 ATH_RSSI_LPF(ATH_NODE(ni)->an_node_stats.ns_avgtxrssi,
4500 ATH_TXQ_UNLOCK(txq);
4503 * Update statistics and call completion
4505 ath_tx_process_buf_completion(sc, txq, ts, bf);
4507 /* XXX at this point, bf and ni may be totally invalid */
4509 #ifdef IEEE80211_SUPPORT_SUPERG
4511 * Flush fast-frame staging queue when traffic slows.
4513 if (txq->axq_depth <= 1)
4514 ieee80211_ff_flush(ic, txq->axq_ac);
4517 /* Kick the software TXQ scheduler */
4520 ath_txq_sched(sc, txq);
4524 ATH_KTR(sc, ATH_KTR_TXCOMP, 1,
4525 "ath_tx_processq: txq=%u: done",
4531 #define TXQACTIVE(t, q) ( (t) & (1 << (q)))
4534 * Deferred processing of transmit interrupt; special-cased
4535 * for a single hardware transmit queue (e.g. 5210 and 5211).
4538 ath_tx_proc_q0(void *arg, int npending)
4540 struct ath_softc *sc = arg;
4544 sc->sc_txproc_cnt++;
4545 txqs = sc->sc_txq_active;
4546 sc->sc_txq_active &= ~txqs;
4550 ath_power_set_power_state(sc, HAL_PM_AWAKE);
4553 ATH_KTR(sc, ATH_KTR_TXCOMP, 1,
4554 "ath_tx_proc_q0: txqs=0x%08x", txqs);
4556 if (TXQACTIVE(txqs, 0) && ath_tx_processq(sc, &sc->sc_txq[0], 1))
4557 /* XXX why is lastrx updated in tx code? */
4558 sc->sc_lastrx = ath_hal_gettsf64(sc->sc_ah);
4559 if (TXQACTIVE(txqs, sc->sc_cabq->axq_qnum))
4560 ath_tx_processq(sc, sc->sc_cabq, 1);
4561 sc->sc_wd_timer = 0;
4564 ath_led_event(sc, sc->sc_txrix);
4567 sc->sc_txproc_cnt--;
4571 ath_power_restore_power_state(sc);
4578 * Deferred processing of transmit interrupt; special-cased
4579 * for four hardware queues, 0-3 (e.g. 5212 w/ WME support).
4582 ath_tx_proc_q0123(void *arg, int npending)
4584 struct ath_softc *sc = arg;
4589 sc->sc_txproc_cnt++;
4590 txqs = sc->sc_txq_active;
4591 sc->sc_txq_active &= ~txqs;
4595 ath_power_set_power_state(sc, HAL_PM_AWAKE);
4598 ATH_KTR(sc, ATH_KTR_TXCOMP, 1,
4599 "ath_tx_proc_q0123: txqs=0x%08x", txqs);
4602 * Process each active queue.
4605 if (TXQACTIVE(txqs, 0))
4606 nacked += ath_tx_processq(sc, &sc->sc_txq[0], 1);
4607 if (TXQACTIVE(txqs, 1))
4608 nacked += ath_tx_processq(sc, &sc->sc_txq[1], 1);
4609 if (TXQACTIVE(txqs, 2))
4610 nacked += ath_tx_processq(sc, &sc->sc_txq[2], 1);
4611 if (TXQACTIVE(txqs, 3))
4612 nacked += ath_tx_processq(sc, &sc->sc_txq[3], 1);
4613 if (TXQACTIVE(txqs, sc->sc_cabq->axq_qnum))
4614 ath_tx_processq(sc, sc->sc_cabq, 1);
4616 sc->sc_lastrx = ath_hal_gettsf64(sc->sc_ah);
4618 sc->sc_wd_timer = 0;
4621 ath_led_event(sc, sc->sc_txrix);
4624 sc->sc_txproc_cnt--;
4628 ath_power_restore_power_state(sc);
4635 * Deferred processing of transmit interrupt.
4638 ath_tx_proc(void *arg, int npending)
4640 struct ath_softc *sc = arg;
4645 sc->sc_txproc_cnt++;
4646 txqs = sc->sc_txq_active;
4647 sc->sc_txq_active &= ~txqs;
4651 ath_power_set_power_state(sc, HAL_PM_AWAKE);
4654 ATH_KTR(sc, ATH_KTR_TXCOMP, 1, "ath_tx_proc: txqs=0x%08x", txqs);
4657 * Process each active queue.
4660 for (i = 0; i < HAL_NUM_TX_QUEUES; i++)
4661 if (ATH_TXQ_SETUP(sc, i) && TXQACTIVE(txqs, i))
4662 nacked += ath_tx_processq(sc, &sc->sc_txq[i], 1);
4664 sc->sc_lastrx = ath_hal_gettsf64(sc->sc_ah);
4666 sc->sc_wd_timer = 0;
4669 ath_led_event(sc, sc->sc_txrix);
4672 sc->sc_txproc_cnt--;
4676 ath_power_restore_power_state(sc);
4684 * Deferred processing of TXQ rescheduling.
4687 ath_txq_sched_tasklet(void *arg, int npending)
4689 struct ath_softc *sc = arg;
4692 /* XXX is skipping ok? */
4695 if (sc->sc_inreset_cnt > 0) {
4696 device_printf(sc->sc_dev,
4697 "%s: sc_inreset_cnt > 0; skipping\n", __func__);
4702 sc->sc_txproc_cnt++;
4706 ath_power_set_power_state(sc, HAL_PM_AWAKE);
4710 for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
4711 if (ATH_TXQ_SETUP(sc, i)) {
4712 ath_txq_sched(sc, &sc->sc_txq[i]);
4718 ath_power_restore_power_state(sc);
4722 sc->sc_txproc_cnt--;
4727 ath_returnbuf_tail(struct ath_softc *sc, struct ath_buf *bf)
4730 ATH_TXBUF_LOCK_ASSERT(sc);
4732 if (bf->bf_flags & ATH_BUF_MGMT)
4733 TAILQ_INSERT_TAIL(&sc->sc_txbuf_mgmt, bf, bf_list);
4735 TAILQ_INSERT_TAIL(&sc->sc_txbuf, bf, bf_list);
4737 if (sc->sc_txbuf_cnt > ath_txbuf) {
4738 device_printf(sc->sc_dev,
4739 "%s: sc_txbuf_cnt > %d?\n",
4742 sc->sc_txbuf_cnt = ath_txbuf;
4748 ath_returnbuf_head(struct ath_softc *sc, struct ath_buf *bf)
4751 ATH_TXBUF_LOCK_ASSERT(sc);
4753 if (bf->bf_flags & ATH_BUF_MGMT)
4754 TAILQ_INSERT_HEAD(&sc->sc_txbuf_mgmt, bf, bf_list);
4756 TAILQ_INSERT_HEAD(&sc->sc_txbuf, bf, bf_list);
4758 if (sc->sc_txbuf_cnt > ATH_TXBUF) {
4759 device_printf(sc->sc_dev,
4760 "%s: sc_txbuf_cnt > %d?\n",
4763 sc->sc_txbuf_cnt = ATH_TXBUF;
4769 * Free the holding buffer if it exists
4772 ath_txq_freeholdingbuf(struct ath_softc *sc, struct ath_txq *txq)
4774 ATH_TXBUF_UNLOCK_ASSERT(sc);
4775 ATH_TXQ_LOCK_ASSERT(txq);
4777 if (txq->axq_holdingbf == NULL)
4780 txq->axq_holdingbf->bf_flags &= ~ATH_BUF_BUSY;
4783 ath_returnbuf_tail(sc, txq->axq_holdingbf);
4784 ATH_TXBUF_UNLOCK(sc);
4786 txq->axq_holdingbf = NULL;
4790 * Add this buffer to the holding queue, freeing the previous
4794 ath_txq_addholdingbuf(struct ath_softc *sc, struct ath_buf *bf)
4796 struct ath_txq *txq;
4798 txq = &sc->sc_txq[bf->bf_state.bfs_tx_queue];
4800 ATH_TXBUF_UNLOCK_ASSERT(sc);
4801 ATH_TXQ_LOCK_ASSERT(txq);
4803 /* XXX assert ATH_BUF_BUSY is set */
4805 /* XXX assert the tx queue is under the max number */
4806 if (bf->bf_state.bfs_tx_queue > HAL_NUM_TX_QUEUES) {
4807 device_printf(sc->sc_dev, "%s: bf=%p: invalid tx queue (%d)\n",
4810 bf->bf_state.bfs_tx_queue);
4811 bf->bf_flags &= ~ATH_BUF_BUSY;
4812 ath_returnbuf_tail(sc, bf);
4815 ath_txq_freeholdingbuf(sc, txq);
4816 txq->axq_holdingbf = bf;
4820 * Return a buffer to the pool and update the 'busy' flag on the
4821 * previous 'tail' entry.
4823 * This _must_ only be called when the buffer is involved in a completed
4824 * TX. The logic is that if it was part of an active TX, the previous
4825 * buffer on the list is now not involved in a halted TX DMA queue, waiting
4826 * for restart (eg for TDMA.)
4828 * The caller must free the mbuf and recycle the node reference.
4830 * XXX This method of handling busy / holding buffers is insanely stupid.
4831 * It requires bf_state.bfs_tx_queue to be correctly assigned. It would
4832 * be much nicer if buffers in the processq() methods would instead be
4833 * always completed there (pushed onto a txq or ath_bufhead) so we knew
4834 * exactly what hardware queue they came from in the first place.
4837 ath_freebuf(struct ath_softc *sc, struct ath_buf *bf)
4839 struct ath_txq *txq;
4841 txq = &sc->sc_txq[bf->bf_state.bfs_tx_queue];
4843 KASSERT((bf->bf_node == NULL), ("%s: bf->bf_node != NULL\n", __func__));
4844 KASSERT((bf->bf_m == NULL), ("%s: bf->bf_m != NULL\n", __func__));
4847 * If this buffer is busy, push it onto the holding queue.
4849 if (bf->bf_flags & ATH_BUF_BUSY) {
4851 ath_txq_addholdingbuf(sc, bf);
4852 ATH_TXQ_UNLOCK(txq);
4857 * Not a busy buffer, so free normally
4860 ath_returnbuf_tail(sc, bf);
4861 ATH_TXBUF_UNLOCK(sc);
4865 * This is currently used by ath_tx_draintxq() and
4866 * ath_tx_tid_free_pkts().
4868 * It recycles a single ath_buf.
4871 ath_tx_freebuf(struct ath_softc *sc, struct ath_buf *bf, int status)
4873 struct ieee80211_node *ni = bf->bf_node;
4874 struct mbuf *m0 = bf->bf_m;
4877 * Make sure that we only sync/unload if there's an mbuf.
4878 * If not (eg we cloned a buffer), the unload will have already
4881 if (bf->bf_m != NULL) {
4882 bus_dmamap_sync(sc->sc_dmat, bf->bf_dmamap,
4883 BUS_DMASYNC_POSTWRITE);
4884 bus_dmamap_unload(sc->sc_dmat, bf->bf_dmamap);
4890 /* Free the buffer, it's not needed any longer */
4891 ath_freebuf(sc, bf);
4893 /* Pass the buffer back to net80211 - completing it */
4894 ieee80211_tx_complete(ni, m0, status);
4897 static struct ath_buf *
4898 ath_tx_draintxq_get_one(struct ath_softc *sc, struct ath_txq *txq)
4902 ATH_TXQ_LOCK_ASSERT(txq);
4905 * Drain the FIFO queue first, then if it's
4906 * empty, move to the normal frame queue.
4908 bf = TAILQ_FIRST(&txq->fifo.axq_q);
4911 * Is it the last buffer in this set?
4912 * Decrement the FIFO counter.
4914 if (bf->bf_flags & ATH_BUF_FIFOEND) {
4915 if (txq->axq_fifo_depth == 0) {
4916 device_printf(sc->sc_dev,
4917 "%s: Q%d: fifo_depth=0, fifo.axq_depth=%d?\n",
4920 txq->fifo.axq_depth);
4922 txq->axq_fifo_depth--;
4924 ATH_TXQ_REMOVE(&txq->fifo, bf, bf_list);
4931 if (txq->axq_fifo_depth != 0 || txq->fifo.axq_depth != 0) {
4932 device_printf(sc->sc_dev,
4933 "%s: Q%d: fifo_depth=%d, fifo.axq_depth=%d\n",
4936 txq->axq_fifo_depth,
4937 txq->fifo.axq_depth);
4941 * Now drain the pending queue.
4943 bf = TAILQ_FIRST(&txq->axq_q);
4945 txq->axq_link = NULL;
4948 ATH_TXQ_REMOVE(txq, bf, bf_list);
4953 ath_tx_draintxq(struct ath_softc *sc, struct ath_txq *txq)
4956 struct ath_hal *ah = sc->sc_ah;
4962 * NB: this assumes output has been stopped and
4963 * we do not need to block ath_tx_proc
4965 for (ix = 0;; ix++) {
4967 bf = ath_tx_draintxq_get_one(sc, txq);
4969 ATH_TXQ_UNLOCK(txq);
4972 if (bf->bf_state.bfs_aggr)
4973 txq->axq_aggr_depth--;
4975 if (sc->sc_debug & ATH_DEBUG_RESET) {
4976 struct ieee80211com *ic = &sc->sc_ic;
4980 * EDMA operation has a TX completion FIFO
4981 * separate from the TX descriptor, so this
4982 * method of checking the "completion" status
4985 if (! sc->sc_isedma) {
4986 status = (ath_hal_txprocdesc(ah,
4988 &bf->bf_status.ds_txstat) == HAL_OK);
4990 ath_printtxbuf(sc, bf, txq->axq_qnum, ix, status);
4991 ieee80211_dump_pkt(ic, mtod(bf->bf_m, const uint8_t *),
4992 bf->bf_m->m_len, 0, -1);
4994 #endif /* ATH_DEBUG */
4996 * Since we're now doing magic in the completion
4997 * functions, we -must- call it for aggregation
4998 * destinations or BAW tracking will get upset.
5001 * Clear ATH_BUF_BUSY; the completion handler
5002 * will free the buffer.
5004 ATH_TXQ_UNLOCK(txq);
5005 bf->bf_flags &= ~ATH_BUF_BUSY;
5007 bf->bf_comp(sc, bf, 1);
5009 ath_tx_default_comp(sc, bf, 1);
5013 * Free the holding buffer if it exists
5016 ath_txq_freeholdingbuf(sc, txq);
5017 ATH_TXQ_UNLOCK(txq);
5020 * Drain software queued frames which are on
5023 ath_tx_txq_drain(sc, txq);
5027 ath_tx_stopdma(struct ath_softc *sc, struct ath_txq *txq)
5029 struct ath_hal *ah = sc->sc_ah;
5031 ATH_TXQ_LOCK_ASSERT(txq);
5033 DPRINTF(sc, ATH_DEBUG_RESET,
5034 "%s: tx queue [%u] %p, active=%d, hwpending=%d, flags 0x%08x, "
5035 "link %p, holdingbf=%p\n",
5038 (caddr_t)(uintptr_t) ath_hal_gettxbuf(ah, txq->axq_qnum),
5039 (int) (!! ath_hal_txqenabled(ah, txq->axq_qnum)),
5040 (int) ath_hal_numtxpending(ah, txq->axq_qnum),
5043 txq->axq_holdingbf);
5045 (void) ath_hal_stoptxdma(ah, txq->axq_qnum);
5046 /* We've stopped TX DMA, so mark this as stopped. */
5047 txq->axq_flags &= ~ATH_TXQ_PUTRUNNING;
5050 if ((sc->sc_debug & ATH_DEBUG_RESET)
5051 && (txq->axq_holdingbf != NULL)) {
5052 ath_printtxbuf(sc, txq->axq_holdingbf, txq->axq_qnum, 0, 0);
5058 ath_stoptxdma(struct ath_softc *sc)
5060 struct ath_hal *ah = sc->sc_ah;
5063 /* XXX return value */
5067 if (!sc->sc_invalid) {
5068 /* don't touch the hardware if marked invalid */
5069 DPRINTF(sc, ATH_DEBUG_RESET, "%s: tx queue [%u] %p, link %p\n",
5070 __func__, sc->sc_bhalq,
5071 (caddr_t)(uintptr_t) ath_hal_gettxbuf(ah, sc->sc_bhalq),
5074 /* stop the beacon queue */
5075 (void) ath_hal_stoptxdma(ah, sc->sc_bhalq);
5077 /* Stop the data queues */
5078 for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
5079 if (ATH_TXQ_SETUP(sc, i)) {
5080 ATH_TXQ_LOCK(&sc->sc_txq[i]);
5081 ath_tx_stopdma(sc, &sc->sc_txq[i]);
5082 ATH_TXQ_UNLOCK(&sc->sc_txq[i]);
5092 ath_tx_dump(struct ath_softc *sc, struct ath_txq *txq)
5094 struct ath_hal *ah = sc->sc_ah;
5098 if (! (sc->sc_debug & ATH_DEBUG_RESET))
5101 device_printf(sc->sc_dev, "%s: Q%d: begin\n",
5102 __func__, txq->axq_qnum);
5103 TAILQ_FOREACH(bf, &txq->axq_q, bf_list) {
5104 ath_printtxbuf(sc, bf, txq->axq_qnum, i,
5105 ath_hal_txprocdesc(ah, bf->bf_lastds,
5106 &bf->bf_status.ds_txstat) == HAL_OK);
5109 device_printf(sc->sc_dev, "%s: Q%d: end\n",
5110 __func__, txq->axq_qnum);
5112 #endif /* ATH_DEBUG */
5115 * Drain the transmit queues and reclaim resources.
5118 ath_legacy_tx_drain(struct ath_softc *sc, ATH_RESET_TYPE reset_type)
5120 struct ath_hal *ah = sc->sc_ah;
5121 struct ath_buf *bf_last;
5124 (void) ath_stoptxdma(sc);
5127 * Dump the queue contents
5129 for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
5131 * XXX TODO: should we just handle the completed TX frames
5132 * here, whether or not the reset is a full one or not?
5134 if (ATH_TXQ_SETUP(sc, i)) {
5136 if (sc->sc_debug & ATH_DEBUG_RESET)
5137 ath_tx_dump(sc, &sc->sc_txq[i]);
5138 #endif /* ATH_DEBUG */
5139 if (reset_type == ATH_RESET_NOLOSS) {
5140 ath_tx_processq(sc, &sc->sc_txq[i], 0);
5141 ATH_TXQ_LOCK(&sc->sc_txq[i]);
5143 * Free the holding buffer; DMA is now
5146 ath_txq_freeholdingbuf(sc, &sc->sc_txq[i]);
5148 * Setup the link pointer to be the
5149 * _last_ buffer/descriptor in the list.
5150 * If there's nothing in the list, set it
5153 bf_last = ATH_TXQ_LAST(&sc->sc_txq[i],
5155 if (bf_last != NULL) {
5156 ath_hal_gettxdesclinkptr(ah,
5158 &sc->sc_txq[i].axq_link);
5160 sc->sc_txq[i].axq_link = NULL;
5162 ATH_TXQ_UNLOCK(&sc->sc_txq[i]);
5164 ath_tx_draintxq(sc, &sc->sc_txq[i]);
5168 if (sc->sc_debug & ATH_DEBUG_RESET) {
5169 struct ath_buf *bf = TAILQ_FIRST(&sc->sc_bbuf);
5170 if (bf != NULL && bf->bf_m != NULL) {
5171 ath_printtxbuf(sc, bf, sc->sc_bhalq, 0,
5172 ath_hal_txprocdesc(ah, bf->bf_lastds,
5173 &bf->bf_status.ds_txstat) == HAL_OK);
5174 ieee80211_dump_pkt(&sc->sc_ic,
5175 mtod(bf->bf_m, const uint8_t *), bf->bf_m->m_len,
5179 #endif /* ATH_DEBUG */
5180 sc->sc_wd_timer = 0;
5184 * Update internal state after a channel change.
5187 ath_chan_change(struct ath_softc *sc, struct ieee80211_channel *chan)
5189 enum ieee80211_phymode mode;
5192 * Change channels and update the h/w rate map
5193 * if we're switching; e.g. 11a to 11b/g.
5195 mode = ieee80211_chan2mode(chan);
5196 if (mode != sc->sc_curmode)
5197 ath_setcurmode(sc, mode);
5198 sc->sc_curchan = chan;
5202 * Set/change channels. If the channel is really being changed,
5203 * it's done by resetting the chip. To accomplish this we must
5204 * first cleanup any pending DMA, then restart stuff after a la
5208 ath_chan_set(struct ath_softc *sc, struct ieee80211_channel *chan)
5210 struct ieee80211com *ic = &sc->sc_ic;
5211 struct ath_hal *ah = sc->sc_ah;
5214 /* Treat this as an interface reset */
5215 ATH_PCU_UNLOCK_ASSERT(sc);
5216 ATH_UNLOCK_ASSERT(sc);
5218 /* (Try to) stop TX/RX from occurring */
5219 taskqueue_block(sc->sc_tq);
5223 /* Disable interrupts */
5224 ath_hal_intrset(ah, 0);
5226 /* Stop new RX/TX/interrupt completion */
5227 if (ath_reset_grablock(sc, 1) == 0) {
5228 device_printf(sc->sc_dev, "%s: concurrent reset! Danger!\n",
5232 /* Stop pending RX/TX completion */
5233 ath_txrx_stop_locked(sc);
5237 DPRINTF(sc, ATH_DEBUG_RESET, "%s: %u (%u MHz, flags 0x%x)\n",
5238 __func__, ieee80211_chan2ieee(ic, chan),
5239 chan->ic_freq, chan->ic_flags);
5240 if (chan != sc->sc_curchan) {
5243 * To switch channels clear any pending DMA operations;
5244 * wait long enough for the RX fifo to drain, reset the
5245 * hardware at the new frequency, and then re-enable
5246 * the relevant bits of the h/w.
5249 ath_hal_intrset(ah, 0); /* disable interrupts */
5251 ath_stoprecv(sc, 1); /* turn off frame recv */
5253 * First, handle completed TX/RX frames.
5256 ath_draintxq(sc, ATH_RESET_NOLOSS);
5258 * Next, flush the non-scheduled frames.
5260 ath_draintxq(sc, ATH_RESET_FULL); /* clear pending tx frames */
5262 ath_update_chainmasks(sc, chan);
5263 ath_hal_setchainmasks(sc->sc_ah, sc->sc_cur_txchainmask,
5264 sc->sc_cur_rxchainmask);
5265 if (!ath_hal_reset(ah, sc->sc_opmode, chan, AH_TRUE,
5266 HAL_RESET_NORMAL, &status)) {
5267 device_printf(sc->sc_dev, "%s: unable to reset "
5268 "channel %u (%u MHz, flags 0x%x), hal status %u\n",
5269 __func__, ieee80211_chan2ieee(ic, chan),
5270 chan->ic_freq, chan->ic_flags, status);
5274 sc->sc_diversity = ath_hal_getdiversity(ah);
5277 sc->sc_rx_stopped = 1;
5278 sc->sc_rx_resetted = 1;
5281 /* Quiet time handling - ensure we resync */
5282 ath_vap_clear_quiet_ie(sc);
5284 /* Let DFS at it in case it's a DFS channel */
5285 ath_dfs_radar_enable(sc, chan);
5287 /* Let spectral at in case spectral is enabled */
5288 ath_spectral_enable(sc, chan);
5291 * Let bluetooth coexistence at in case it's needed for this
5294 ath_btcoex_enable(sc, ic->ic_curchan);
5297 * If we're doing TDMA, enforce the TXOP limitation for chips
5300 if (sc->sc_hasenforcetxop && sc->sc_tdma)
5301 ath_hal_setenforcetxop(sc->sc_ah, 1);
5303 ath_hal_setenforcetxop(sc->sc_ah, 0);
5306 * Re-enable rx framework.
5308 if (ath_startrecv(sc) != 0) {
5309 device_printf(sc->sc_dev,
5310 "%s: unable to restart recv logic\n", __func__);
5316 * Change channels and update the h/w rate map
5317 * if we're switching; e.g. 11a to 11b/g.
5319 ath_chan_change(sc, chan);
5322 * Reset clears the beacon timers; reset them
5325 if (sc->sc_beacons) { /* restart beacons */
5326 #ifdef IEEE80211_SUPPORT_TDMA
5328 ath_tdma_config(sc, NULL);
5331 ath_beacon_config(sc, NULL);
5335 * Re-enable interrupts.
5338 ath_hal_intrset(ah, sc->sc_imask);
5344 sc->sc_inreset_cnt--;
5345 /* XXX only do this if sc_inreset_cnt == 0? */
5346 ath_hal_intrset(ah, sc->sc_imask);
5350 /* XXX ath_start? */
5356 * Periodically recalibrate the PHY to account
5357 * for temperature/environment changes.
5360 ath_calibrate(void *arg)
5362 struct ath_softc *sc = arg;
5363 struct ath_hal *ah = sc->sc_ah;
5364 struct ieee80211com *ic = &sc->sc_ic;
5365 HAL_BOOL longCal, isCalDone = AH_TRUE;
5366 HAL_BOOL aniCal, shortCal = AH_FALSE;
5369 ATH_LOCK_ASSERT(sc);
5372 * Force the hardware awake for ANI work.
5374 ath_power_set_power_state(sc, HAL_PM_AWAKE);
5376 /* Skip trying to do this if we're in reset */
5377 if (sc->sc_inreset_cnt)
5380 if (ic->ic_flags & IEEE80211_F_SCAN) /* defer, off channel */
5382 longCal = (ticks - sc->sc_lastlongcal >= ath_longcalinterval*hz);
5383 aniCal = (ticks - sc->sc_lastani >= ath_anicalinterval*hz/1000);
5384 if (sc->sc_doresetcal)
5385 shortCal = (ticks - sc->sc_lastshortcal >= ath_shortcalinterval*hz/1000);
5387 DPRINTF(sc, ATH_DEBUG_CALIBRATE, "%s: shortCal=%d; longCal=%d; aniCal=%d\n", __func__, shortCal, longCal, aniCal);
5389 sc->sc_stats.ast_ani_cal++;
5390 sc->sc_lastani = ticks;
5391 ath_hal_ani_poll(ah, sc->sc_curchan);
5395 sc->sc_stats.ast_per_cal++;
5396 sc->sc_lastlongcal = ticks;
5397 if (ath_hal_getrfgain(ah) == HAL_RFGAIN_NEED_CHANGE) {
5399 * Rfgain is out of bounds, reset the chip
5400 * to load new gain values.
5402 DPRINTF(sc, ATH_DEBUG_CALIBRATE,
5403 "%s: rfgain change\n", __func__);
5404 sc->sc_stats.ast_per_rfgain++;
5405 sc->sc_resetcal = 0;
5406 sc->sc_doresetcal = AH_TRUE;
5407 taskqueue_enqueue(sc->sc_tq, &sc->sc_resettask);
5408 callout_reset(&sc->sc_cal_ch, 1, ath_calibrate, sc);
5409 ath_power_restore_power_state(sc);
5413 * If this long cal is after an idle period, then
5414 * reset the data collection state so we start fresh.
5416 if (sc->sc_resetcal) {
5417 (void) ath_hal_calreset(ah, sc->sc_curchan);
5418 sc->sc_lastcalreset = ticks;
5419 sc->sc_lastshortcal = ticks;
5420 sc->sc_resetcal = 0;
5421 sc->sc_doresetcal = AH_TRUE;
5425 /* Only call if we're doing a short/long cal, not for ANI calibration */
5426 if (shortCal || longCal) {
5427 isCalDone = AH_FALSE;
5428 if (ath_hal_calibrateN(ah, sc->sc_curchan, longCal, &isCalDone)) {
5431 * Calibrate noise floor data again in case of change.
5433 ath_hal_process_noisefloor(ah);
5436 DPRINTF(sc, ATH_DEBUG_ANY,
5437 "%s: calibration of channel %u failed\n",
5438 __func__, sc->sc_curchan->ic_freq);
5439 sc->sc_stats.ast_per_calfail++;
5442 * XXX TODO: get the NF calibration results from the HAL.
5443 * If we failed NF cal then schedule a hard reset to potentially
5444 * un-freeze the PHY.
5446 * Note we have to be careful here to not get stuck in an
5447 * infinite NIC restart. Ideally we'd not restart if we
5448 * failed the first NF cal - that /can/ fail sometimes in
5449 * a noisy environment.
5452 sc->sc_lastshortcal = ticks;
5457 * Use a shorter interval to potentially collect multiple
5458 * data samples required to complete calibration. Once
5459 * we're told the work is done we drop back to a longer
5460 * interval between requests. We're more aggressive doing
5461 * work when operating as an AP to improve operation right
5464 sc->sc_lastshortcal = ticks;
5465 nextcal = ath_shortcalinterval*hz/1000;
5466 if (sc->sc_opmode != HAL_M_HOSTAP)
5468 sc->sc_doresetcal = AH_TRUE;
5470 /* nextcal should be the shortest time for next event */
5471 nextcal = ath_longcalinterval*hz;
5472 if (sc->sc_lastcalreset == 0)
5473 sc->sc_lastcalreset = sc->sc_lastlongcal;
5474 else if (ticks - sc->sc_lastcalreset >= ath_resetcalinterval*hz)
5475 sc->sc_resetcal = 1; /* setup reset next trip */
5476 sc->sc_doresetcal = AH_FALSE;
5478 /* ANI calibration may occur more often than short/long/resetcal */
5479 if (ath_anicalinterval > 0)
5480 nextcal = MIN(nextcal, ath_anicalinterval*hz/1000);
5483 DPRINTF(sc, ATH_DEBUG_CALIBRATE, "%s: next +%u (%sisCalDone)\n",
5484 __func__, nextcal, isCalDone ? "" : "!");
5485 callout_reset(&sc->sc_cal_ch, nextcal, ath_calibrate, sc);
5487 DPRINTF(sc, ATH_DEBUG_CALIBRATE, "%s: calibration disabled\n",
5489 /* NB: don't rearm timer */
5492 * Restore power state now that we're done.
5494 ath_power_restore_power_state(sc);
5498 ath_scan_start(struct ieee80211com *ic)
5500 struct ath_softc *sc = ic->ic_softc;
5501 struct ath_hal *ah = sc->sc_ah;
5504 /* XXX calibration timer? */
5505 /* XXXGL: is constant ieee80211broadcastaddr a correct choice? */
5508 sc->sc_scanning = 1;
5509 sc->sc_syncbeacon = 0;
5510 rfilt = ath_calcrxfilter(sc);
5514 ath_hal_setrxfilter(ah, rfilt);
5515 ath_hal_setassocid(ah, ieee80211broadcastaddr, 0);
5518 DPRINTF(sc, ATH_DEBUG_STATE, "%s: RX filter 0x%x bssid %s aid 0\n",
5519 __func__, rfilt, ether_sprintf(ieee80211broadcastaddr));
5523 ath_scan_end(struct ieee80211com *ic)
5525 struct ath_softc *sc = ic->ic_softc;
5526 struct ath_hal *ah = sc->sc_ah;
5530 sc->sc_scanning = 0;
5531 rfilt = ath_calcrxfilter(sc);
5535 ath_hal_setrxfilter(ah, rfilt);
5536 ath_hal_setassocid(ah, sc->sc_curbssid, sc->sc_curaid);
5538 ath_hal_process_noisefloor(ah);
5541 DPRINTF(sc, ATH_DEBUG_STATE, "%s: RX filter 0x%x bssid %s aid 0x%x\n",
5542 __func__, rfilt, ether_sprintf(sc->sc_curbssid),
5546 #ifdef ATH_ENABLE_11N
5548 * For now, just do a channel change.
5550 * Later, we'll go through the hard slog of suspending tx/rx, changing rate
5551 * control state and resetting the hardware without dropping frames out
5554 * The unfortunate trouble here is making absolutely sure that the
5555 * channel width change has propagated enough so the hardware
5556 * absolutely isn't handed bogus frames for it's current operating
5557 * mode. (Eg, 40MHz frames in 20MHz mode.) Since TX and RX can and
5558 * does occur in parallel, we need to make certain we've blocked
5559 * any further ongoing TX (and RX, that can cause raw TX)
5560 * before we do this.
5563 ath_update_chw(struct ieee80211com *ic)
5565 struct ath_softc *sc = ic->ic_softc;
5567 //DPRINTF(sc, ATH_DEBUG_STATE, "%s: called\n", __func__);
5568 device_printf(sc->sc_dev, "%s: called\n", __func__);
5571 * XXX TODO: schedule a tasklet that stops things without freeing,
5572 * walks the now stopped TX queue(s) looking for frames to retry
5573 * as if we TX filtered them (whch may mean dropping non-ampdu frames!)
5574 * but okay) then place them back on the software queue so they
5575 * can have the rate control lookup done again.
5577 ath_set_channel(ic);
5579 #endif /* ATH_ENABLE_11N */
5582 * This is called by the beacon parsing routine in the receive
5583 * path to update the current quiet time information provided by
5586 * This is STA specific, it doesn't take the AP TBTT/beacon slot
5587 * offset into account.
5589 * The quiet IE doesn't control the /now/ beacon interval - it
5590 * controls the upcoming beacon interval. So, when tbtt=1,
5591 * the quiet element programming shall be for the next beacon
5592 * interval. There's no tbtt=0 behaviour defined, so don't.
5594 * Since we're programming the next quiet interval, we have
5595 * to keep in mind what we will see when the next beacon
5596 * is received with potentially a quiet IE. For example, if
5597 * quiet_period is 1, then we are always getting a quiet interval
5598 * each TBTT - so if we just program it in upon each beacon received,
5599 * it will constantly reflect the "next" TBTT and we will never
5600 * let the counter stay programmed correctly.
5603 * + the first time we see the quiet IE, program it and store
5604 * the details somewhere;
5605 * + if the quiet parameters don't change (ie, period/duration/offset)
5606 * then just leave the programming enabled;
5607 * + (we can "skip" beacons, so don't try to enforce tbttcount unless
5608 * you're willing to also do the skipped beacon math);
5609 * + if the quiet IE is removed, then halt quiet time.
5612 ath_set_quiet_ie(struct ieee80211_node *ni, uint8_t *ie)
5614 struct ieee80211_quiet_ie *q;
5615 struct ieee80211vap *vap = ni->ni_vap;
5616 struct ath_vap *avp = ATH_VAP(vap);
5617 struct ieee80211com *ic = vap->iv_ic;
5618 struct ath_softc *sc = ic->ic_softc;
5620 if (vap->iv_opmode != IEEE80211_M_STA)
5623 /* Verify we have a quiet time IE */
5625 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5626 "%s: called; NULL IE, disabling\n", __func__);
5628 ath_hal_set_quiet(sc->sc_ah, 0, 0, 0, HAL_QUIET_DISABLE);
5629 memset(&avp->quiet_ie, 0, sizeof(avp->quiet_ie));
5633 /* If we do, verify it's actually legit */
5634 if (ie[0] != IEEE80211_ELEMID_QUIET)
5639 /* Note: this belongs in net80211, parsed out and everything */
5643 * Compare what we have stored to what we last saw.
5644 * If they're the same then don't program in anything.
5646 if ((q->period == avp->quiet_ie.period) &&
5647 (le16dec(&q->duration) == le16dec(&avp->quiet_ie.duration)) &&
5648 (le16dec(&q->offset) == le16dec(&avp->quiet_ie.offset)))
5651 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5652 "%s: called; tbttcount=%d, period=%d, duration=%d, offset=%d\n",
5656 (int) le16dec(&q->duration),
5657 (int) le16dec(&q->offset));
5660 * Don't program in garbage values.
5662 if ((le16dec(&q->duration) == 0) ||
5663 (le16dec(&q->duration) >= ni->ni_intval)) {
5664 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5665 "%s: invalid duration (%d)\n", __func__,
5666 le16dec(&q->duration));
5670 * Can have a 0 offset, but not a duration - so just check
5671 * they don't exceed the intval.
5673 if (le16dec(&q->duration) + le16dec(&q->offset) >= ni->ni_intval) {
5674 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5675 "%s: invalid duration + offset (%d+%d)\n", __func__,
5676 le16dec(&q->duration),
5677 le16dec(&q->offset));
5680 if (q->tbttcount == 0) {
5681 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5682 "%s: invalid tbttcount (0)\n", __func__);
5685 if (q->period == 0) {
5686 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5687 "%s: invalid period (0)\n", __func__);
5692 * This is a new quiet time IE config, so wait until tbttcount
5693 * is equal to 1, and program it in.
5695 if (q->tbttcount == 1) {
5696 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5697 "%s: programming\n", __func__);
5698 ath_hal_set_quiet(sc->sc_ah,
5699 q->period * ni->ni_intval, /* convert to TU */
5700 le16dec(&q->duration), /* already in TU */
5701 le16dec(&q->offset) + ni->ni_intval,
5702 HAL_QUIET_ENABLE | HAL_QUIET_ADD_CURRENT_TSF);
5704 * Note: no HAL_QUIET_ADD_SWBA_RESP_TIME; as this is for
5708 /* Update local state */
5709 memcpy(&avp->quiet_ie, ie, sizeof(struct ieee80211_quiet_ie));
5716 ath_set_channel(struct ieee80211com *ic)
5718 struct ath_softc *sc = ic->ic_softc;
5721 ath_power_set_power_state(sc, HAL_PM_AWAKE);
5724 (void) ath_chan_set(sc, ic->ic_curchan);
5726 * If we are returning to our bss channel then mark state
5727 * so the next recv'd beacon's tsf will be used to sync the
5728 * beacon timers. Note that since we only hear beacons in
5729 * sta/ibss mode this has no effect in other operating modes.
5732 if (!sc->sc_scanning && ic->ic_curchan == ic->ic_bsschan)
5733 sc->sc_syncbeacon = 1;
5734 ath_power_restore_power_state(sc);
5739 * Walk the vap list and check if there any vap's in RUN state.
5742 ath_isanyrunningvaps(struct ieee80211vap *this)
5744 struct ieee80211com *ic = this->iv_ic;
5745 struct ieee80211vap *vap;
5747 IEEE80211_LOCK_ASSERT(ic);
5749 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
5750 if (vap != this && vap->iv_state >= IEEE80211_S_RUN)
5757 ath_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
5759 struct ieee80211com *ic = vap->iv_ic;
5760 struct ath_softc *sc = ic->ic_softc;
5761 struct ath_vap *avp = ATH_VAP(vap);
5762 struct ath_hal *ah = sc->sc_ah;
5763 struct ieee80211_node *ni = NULL;
5764 int i, error, stamode;
5766 int csa_run_transition = 0;
5767 enum ieee80211_state ostate = vap->iv_state;
5769 static const HAL_LED_STATE leds[] = {
5770 HAL_LED_INIT, /* IEEE80211_S_INIT */
5771 HAL_LED_SCAN, /* IEEE80211_S_SCAN */
5772 HAL_LED_AUTH, /* IEEE80211_S_AUTH */
5773 HAL_LED_ASSOC, /* IEEE80211_S_ASSOC */
5774 HAL_LED_RUN, /* IEEE80211_S_CAC */
5775 HAL_LED_RUN, /* IEEE80211_S_RUN */
5776 HAL_LED_RUN, /* IEEE80211_S_CSA */
5777 HAL_LED_RUN, /* IEEE80211_S_SLEEP */
5780 DPRINTF(sc, ATH_DEBUG_STATE, "%s: %s -> %s\n", __func__,
5781 ieee80211_state_name[ostate],
5782 ieee80211_state_name[nstate]);
5785 * net80211 _should_ have the comlock asserted at this point.
5786 * There are some comments around the calls to vap->iv_newstate
5787 * which indicate that it (newstate) may end up dropping the
5788 * lock. This and the subsequent lock assert check after newstate
5789 * are an attempt to catch these and figure out how/why.
5791 IEEE80211_LOCK_ASSERT(ic);
5793 /* Before we touch the hardware - wake it up */
5796 * If the NIC is in anything other than SLEEP state,
5797 * we need to ensure that self-generated frames are
5798 * set for PWRMGT=0. Otherwise we may end up with
5799 * strange situations.
5801 * XXX TODO: is this actually the case? :-)
5803 if (nstate != IEEE80211_S_SLEEP)
5804 ath_power_setselfgen(sc, HAL_PM_AWAKE);
5807 * Now, wake the thing up.
5809 ath_power_set_power_state(sc, HAL_PM_AWAKE);
5812 * And stop the calibration callout whilst we have
5815 callout_stop(&sc->sc_cal_ch);
5818 if (ostate == IEEE80211_S_CSA && nstate == IEEE80211_S_RUN)
5819 csa_run_transition = 1;
5821 ath_hal_setledstate(ah, leds[nstate]); /* set LED */
5823 if (nstate == IEEE80211_S_SCAN) {
5825 * Scanning: turn off beacon miss and don't beacon.
5826 * Mark beacon state so when we reach RUN state we'll
5827 * [re]setup beacons. Unblock the task q thread so
5828 * deferred interrupt processing is done.
5831 /* Ensure we stay awake during scan */
5833 ath_power_setselfgen(sc, HAL_PM_AWAKE);
5834 ath_power_setpower(sc, HAL_PM_AWAKE, 1);
5838 sc->sc_imask &~ (HAL_INT_SWBA | HAL_INT_BMISS));
5839 sc->sc_imask &= ~(HAL_INT_SWBA | HAL_INT_BMISS);
5841 taskqueue_unblock(sc->sc_tq);
5844 ni = ieee80211_ref_node(vap->iv_bss);
5845 rfilt = ath_calcrxfilter(sc);
5846 stamode = (vap->iv_opmode == IEEE80211_M_STA ||
5847 vap->iv_opmode == IEEE80211_M_AHDEMO ||
5848 vap->iv_opmode == IEEE80211_M_IBSS);
5851 * XXX Dont need to do this (and others) if we've transitioned
5854 if (stamode && nstate == IEEE80211_S_RUN) {
5855 sc->sc_curaid = ni->ni_associd;
5856 IEEE80211_ADDR_COPY(sc->sc_curbssid, ni->ni_bssid);
5857 ath_hal_setassocid(ah, sc->sc_curbssid, sc->sc_curaid);
5859 DPRINTF(sc, ATH_DEBUG_STATE, "%s: RX filter 0x%x bssid %s aid 0x%x\n",
5860 __func__, rfilt, ether_sprintf(sc->sc_curbssid), sc->sc_curaid);
5861 ath_hal_setrxfilter(ah, rfilt);
5863 /* XXX is this to restore keycache on resume? */
5864 if (vap->iv_opmode != IEEE80211_M_STA &&
5865 (vap->iv_flags & IEEE80211_F_PRIVACY)) {
5866 for (i = 0; i < IEEE80211_WEP_NKID; i++)
5867 if (ath_hal_keyisvalid(ah, i))
5868 ath_hal_keysetmac(ah, i, ni->ni_bssid);
5872 * Invoke the parent method to do net80211 work.
5874 error = avp->av_newstate(vap, nstate, arg);
5879 * See above: ensure av_newstate() doesn't drop the lock
5882 IEEE80211_LOCK_ASSERT(ic);
5885 * XXX TODO: if nstate is _S_CAC, then we should disable
5886 * ACK processing until CAC is completed.
5890 * XXX TODO: if we're on a passive channel, then we should
5891 * not allow any ACKs or self-generated frames until we hear
5892 * a beacon. Unfortunately there isn't a notification from
5893 * net80211 so perhaps we could slot that particular check
5894 * into the mgmt receive path and just ensure that we clear
5895 * it on RX of beacons in passive mode (and only clear it
5900 * XXX TODO: net80211 should be tracking whether channels
5901 * have heard beacons and are thus considered "OK" for
5902 * transmitting - and then inform the driver about this
5903 * state change. That way if we hear an AP go quiet
5904 * (and nothing else is beaconing on a channel) the
5905 * channel can go back to being passive until another
5910 * XXX TODO: if nstate is _S_CAC, then we should disable
5911 * ACK processing until CAC is completed.
5915 * XXX TODO: if we're on a passive channel, then we should
5916 * not allow any ACKs or self-generated frames until we hear
5917 * a beacon. Unfortunately there isn't a notification from
5918 * net80211 so perhaps we could slot that particular check
5919 * into the mgmt receive path and just ensure that we clear
5920 * it on RX of beacons in passive mode (and only clear it
5925 * XXX TODO: net80211 should be tracking whether channels
5926 * have heard beacons and are thus considered "OK" for
5927 * transmitting - and then inform the driver about this
5928 * state change. That way if we hear an AP go quiet
5929 * (and nothing else is beaconing on a channel) the
5930 * channel can go back to being passive until another
5934 if (nstate == IEEE80211_S_RUN) {
5935 /* NB: collect bss node again, it may have changed */
5936 ieee80211_free_node(ni);
5937 ni = ieee80211_ref_node(vap->iv_bss);
5939 DPRINTF(sc, ATH_DEBUG_STATE,
5940 "%s(RUN): iv_flags 0x%08x bintvl %d bssid %s "
5941 "capinfo 0x%04x chan %d\n", __func__,
5942 vap->iv_flags, ni->ni_intval, ether_sprintf(ni->ni_bssid),
5943 ni->ni_capinfo, ieee80211_chan2ieee(ic, ic->ic_curchan));
5945 switch (vap->iv_opmode) {
5946 #ifdef IEEE80211_SUPPORT_TDMA
5947 case IEEE80211_M_AHDEMO:
5948 if ((vap->iv_caps & IEEE80211_C_TDMA) == 0)
5952 case IEEE80211_M_HOSTAP:
5953 case IEEE80211_M_IBSS:
5954 case IEEE80211_M_MBSS:
5957 * TODO: Enable ACK processing (ie, clear AR_DIAG_ACK_DIS.)
5958 * For channels that are in CAC, we may have disabled
5959 * this during CAC to ensure we don't ACK frames
5964 * Allocate and setup the beacon frame.
5966 * Stop any previous beacon DMA. This may be
5967 * necessary, for example, when an ibss merge
5968 * causes reconfiguration; there will be a state
5969 * transition from RUN->RUN that means we may
5970 * be called with beacon transmission active.
5972 ath_hal_stoptxdma(ah, sc->sc_bhalq);
5974 error = ath_beacon_alloc(sc, ni);
5978 * If joining an adhoc network defer beacon timer
5979 * configuration to the next beacon frame so we
5980 * have a current TSF to use. Otherwise we're
5981 * starting an ibss/bss so there's no need to delay;
5982 * if this is the first vap moving to RUN state, then
5983 * beacon state needs to be [re]configured.
5985 if (vap->iv_opmode == IEEE80211_M_IBSS &&
5986 ni->ni_tstamp.tsf != 0) {
5987 sc->sc_syncbeacon = 1;
5988 } else if (!sc->sc_beacons) {
5989 #ifdef IEEE80211_SUPPORT_TDMA
5990 if (vap->iv_caps & IEEE80211_C_TDMA)
5991 ath_tdma_config(sc, vap);
5994 ath_beacon_config(sc, vap);
5998 case IEEE80211_M_STA:
6000 * Defer beacon timer configuration to the next
6001 * beacon frame so we have a current TSF to use
6002 * (any TSF collected when scanning is likely old).
6003 * However if it's due to a CSA -> RUN transition,
6004 * force a beacon update so we pick up a lack of
6005 * beacons from an AP in CAC and thus force a
6008 * And, there's also corner cases here where
6009 * after a scan, the AP may have disappeared.
6010 * In that case, we may not receive an actual
6011 * beacon to update the beacon timer and thus we
6012 * won't get notified of the missing beacons.
6014 if (ostate != IEEE80211_S_RUN &&
6015 ostate != IEEE80211_S_SLEEP) {
6016 DPRINTF(sc, ATH_DEBUG_BEACON,
6017 "%s: STA; syncbeacon=1\n", __func__);
6018 sc->sc_syncbeacon = 1;
6020 /* Quiet time handling - ensure we resync */
6021 memset(&avp->quiet_ie, 0, sizeof(avp->quiet_ie));
6023 if (csa_run_transition)
6024 ath_beacon_config(sc, vap);
6029 * Reconfigure beacons during reset; as otherwise
6030 * we won't get the beacon timers reprogrammed
6031 * after a reset and thus we won't pick up a
6032 * beacon miss interrupt.
6034 * Hopefully we'll see a beacon before the BMISS
6035 * timer fires (too often), leading to a STA
6041 case IEEE80211_M_MONITOR:
6043 * Monitor mode vaps have only INIT->RUN and RUN->RUN
6044 * transitions so we must re-enable interrupts here to
6045 * handle the case of a single monitor mode vap.
6047 ath_hal_intrset(ah, sc->sc_imask);
6049 case IEEE80211_M_WDS:
6055 * Let the hal process statistics collected during a
6056 * scan so it can provide calibrated noise floor data.
6058 ath_hal_process_noisefloor(ah);
6060 * Reset rssi stats; maybe not the best place...
6062 sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
6063 sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
6064 sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
6067 * Force awake for RUN mode.
6070 ath_power_setselfgen(sc, HAL_PM_AWAKE);
6071 ath_power_setpower(sc, HAL_PM_AWAKE, 1);
6074 * Finally, start any timers and the task q thread
6075 * (in case we didn't go through SCAN state).
6077 if (ath_longcalinterval != 0) {
6078 /* start periodic recalibration timer */
6079 callout_reset(&sc->sc_cal_ch, 1, ath_calibrate, sc);
6081 DPRINTF(sc, ATH_DEBUG_CALIBRATE,
6082 "%s: calibration disabled\n", __func__);
6086 taskqueue_unblock(sc->sc_tq);
6087 } else if (nstate == IEEE80211_S_INIT) {
6089 /* Quiet time handling - ensure we resync */
6090 memset(&avp->quiet_ie, 0, sizeof(avp->quiet_ie));
6093 * If there are no vaps left in RUN state then
6094 * shutdown host/driver operation:
6095 * o disable interrupts
6096 * o disable the task queue thread
6097 * o mark beacon processing as stopped
6099 if (!ath_isanyrunningvaps(vap)) {
6100 sc->sc_imask &= ~(HAL_INT_SWBA | HAL_INT_BMISS);
6101 /* disable interrupts */
6102 ath_hal_intrset(ah, sc->sc_imask &~ HAL_INT_GLOBAL);
6103 taskqueue_block(sc->sc_tq);
6108 * For at least STA mode we likely should clear the ANI
6109 * and NF calibration state and allow the NIC/HAL to figure
6110 * out optimal parameters at runtime. Otherwise if we
6111 * disassociate due to interference / deafness it may persist
6112 * when we reconnect.
6114 * Note: may need to do this for other states too, not just
6117 #ifdef IEEE80211_SUPPORT_TDMA
6118 ath_hal_setcca(ah, AH_TRUE);
6120 } else if (nstate == IEEE80211_S_SLEEP) {
6121 /* We're going to sleep, so transition appropriately */
6122 /* For now, only do this if we're a single STA vap */
6123 if (sc->sc_nvaps == 1 &&
6124 vap->iv_opmode == IEEE80211_M_STA) {
6125 DPRINTF(sc, ATH_DEBUG_BEACON, "%s: syncbeacon=%d\n", __func__, sc->sc_syncbeacon);
6128 * Always at least set the self-generated
6129 * frame config to set PWRMGT=1.
6131 ath_power_setselfgen(sc, HAL_PM_NETWORK_SLEEP);
6134 * If we're not syncing beacons, transition
6137 * We stay awake if syncbeacon > 0 in case
6138 * we need to listen for some beacons otherwise
6139 * our beacon timer config may be wrong.
6141 if (sc->sc_syncbeacon == 0) {
6142 ath_power_setpower(sc, HAL_PM_NETWORK_SLEEP, 1);
6148 * Note - the ANI/calibration timer isn't re-enabled during
6149 * network sleep for now. One unfortunate side-effect is that
6150 * the PHY/airtime statistics aren't gathered on the channel
6151 * but I haven't yet tested to see if reading those registers
6152 * CAN occur during network sleep.
6154 * This should be revisited in a future commit, even if it's
6155 * just to split out the airtime polling from ANI/calibration.
6157 } else if (nstate == IEEE80211_S_SCAN) {
6158 /* Quiet time handling - ensure we resync */
6159 memset(&avp->quiet_ie, 0, sizeof(avp->quiet_ie));
6162 * If we're in scan mode then startpcureceive() is
6163 * hopefully being called with "reset ANI" for this channel;
6164 * but once we attempt to reassociate we program in the previous
6165 * ANI values and.. not do any calibration until we're running.
6166 * This may mean we stay deaf unless we can associate successfully.
6168 * So do kick off the cal timer to get NF/ANI going.
6171 if (ath_longcalinterval != 0) {
6172 /* start periodic recalibration timer */
6173 callout_reset(&sc->sc_cal_ch, 1, ath_calibrate, sc);
6175 DPRINTF(sc, ATH_DEBUG_CALIBRATE,
6176 "%s: calibration disabled\n", __func__);
6181 ieee80211_free_node(ni);
6184 * Restore the power state - either to what it was, or
6185 * to network_sleep if it's alright.
6188 ath_power_restore_power_state(sc);
6194 * Allocate a key cache slot to the station so we can
6195 * setup a mapping from key index to node. The key cache
6196 * slot is needed for managing antenna state and for
6197 * compression when stations do not use crypto. We do
6198 * it uniliaterally here; if crypto is employed this slot
6199 * will be reassigned.
6202 ath_setup_stationkey(struct ieee80211_node *ni)
6204 struct ieee80211vap *vap = ni->ni_vap;
6205 struct ath_softc *sc = vap->iv_ic->ic_softc;
6206 ieee80211_keyix keyix, rxkeyix;
6208 /* XXX should take a locked ref to vap->iv_bss */
6209 if (!ath_key_alloc(vap, &ni->ni_ucastkey, &keyix, &rxkeyix)) {
6211 * Key cache is full; we'll fall back to doing
6212 * the more expensive lookup in software. Note
6213 * this also means no h/w compression.
6215 /* XXX msg+statistic */
6218 ni->ni_ucastkey.wk_keyix = keyix;
6219 ni->ni_ucastkey.wk_rxkeyix = rxkeyix;
6220 /* NB: must mark device key to get called back on delete */
6221 ni->ni_ucastkey.wk_flags |= IEEE80211_KEY_DEVKEY;
6222 IEEE80211_ADDR_COPY(ni->ni_ucastkey.wk_macaddr, ni->ni_macaddr);
6223 /* NB: this will create a pass-thru key entry */
6224 ath_keyset(sc, vap, &ni->ni_ucastkey, vap->iv_bss);
6229 * Setup driver-specific state for a newly associated node.
6230 * Note that we're called also on a re-associate, the isnew
6231 * param tells us if this is the first time or not.
6234 ath_newassoc(struct ieee80211_node *ni, int isnew)
6236 struct ath_node *an = ATH_NODE(ni);
6237 struct ieee80211vap *vap = ni->ni_vap;
6238 struct ath_softc *sc = vap->iv_ic->ic_softc;
6239 const struct ieee80211_txparam *tp = ni->ni_txparms;
6241 an->an_mcastrix = ath_tx_findrix(sc, tp->mcastrate);
6242 an->an_mgmtrix = ath_tx_findrix(sc, tp->mgmtrate);
6244 DPRINTF(sc, ATH_DEBUG_NODE, "%s: %6D: reassoc; isnew=%d, is_powersave=%d\n",
6249 an->an_is_powersave);
6252 ath_rate_newassoc(sc, an, isnew);
6253 ATH_NODE_UNLOCK(an);
6256 (vap->iv_flags & IEEE80211_F_PRIVACY) == 0 && sc->sc_hasclrkey &&
6257 ni->ni_ucastkey.wk_keyix == IEEE80211_KEYIX_NONE)
6258 ath_setup_stationkey(ni);
6261 * If we're reassociating, make sure that any paused queues
6264 * Now, we may have frames in the hardware queue for this node.
6265 * So if we are reassociating and there are frames in the queue,
6266 * we need to go through the cleanup path to ensure that they're
6267 * marked as non-aggregate.
6270 DPRINTF(sc, ATH_DEBUG_NODE,
6271 "%s: %6D: reassoc; is_powersave=%d\n",
6275 an->an_is_powersave);
6277 /* XXX for now, we can't hold the lock across assoc */
6278 ath_tx_node_reassoc(sc, an);
6280 /* XXX for now, we can't hold the lock across wakeup */
6281 if (an->an_is_powersave)
6282 ath_tx_node_wakeup(sc, an);
6287 ath_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *reg,
6288 int nchans, struct ieee80211_channel chans[])
6290 struct ath_softc *sc = ic->ic_softc;
6291 struct ath_hal *ah = sc->sc_ah;
6294 DPRINTF(sc, ATH_DEBUG_REGDOMAIN,
6295 "%s: rd %u cc %u location %c%s\n",
6296 __func__, reg->regdomain, reg->country, reg->location,
6297 reg->ecm ? " ecm" : "");
6299 status = ath_hal_set_channels(ah, chans, nchans,
6300 reg->country, reg->regdomain);
6301 if (status != HAL_OK) {
6302 DPRINTF(sc, ATH_DEBUG_REGDOMAIN, "%s: failed, status %u\n",
6304 return EINVAL; /* XXX */
6311 ath_getradiocaps(struct ieee80211com *ic,
6312 int maxchans, int *nchans, struct ieee80211_channel chans[])
6314 struct ath_softc *sc = ic->ic_softc;
6315 struct ath_hal *ah = sc->sc_ah;
6317 DPRINTF(sc, ATH_DEBUG_REGDOMAIN, "%s: use rd %u cc %d\n",
6318 __func__, SKU_DEBUG, CTRY_DEFAULT);
6320 /* XXX check return */
6321 (void) ath_hal_getchannels(ah, chans, maxchans, nchans,
6322 HAL_MODE_ALL, CTRY_DEFAULT, SKU_DEBUG, AH_TRUE);
6327 ath_getchannels(struct ath_softc *sc)
6329 struct ieee80211com *ic = &sc->sc_ic;
6330 struct ath_hal *ah = sc->sc_ah;
6334 * Collect channel set based on EEPROM contents.
6336 status = ath_hal_init_channels(ah, ic->ic_channels, IEEE80211_CHAN_MAX,
6337 &ic->ic_nchans, HAL_MODE_ALL, CTRY_DEFAULT, SKU_NONE, AH_TRUE);
6338 if (status != HAL_OK) {
6339 device_printf(sc->sc_dev,
6340 "%s: unable to collect channel list from hal, status %d\n",
6344 (void) ath_hal_getregdomain(ah, &sc->sc_eerd);
6345 ath_hal_getcountrycode(ah, &sc->sc_eecc); /* NB: cannot fail */
6346 /* XXX map Atheros sku's to net80211 SKU's */
6347 /* XXX net80211 types too small */
6348 ic->ic_regdomain.regdomain = (uint16_t) sc->sc_eerd;
6349 ic->ic_regdomain.country = (uint16_t) sc->sc_eecc;
6350 ic->ic_regdomain.isocc[0] = ' '; /* XXX don't know */
6351 ic->ic_regdomain.isocc[1] = ' ';
6353 ic->ic_regdomain.ecm = 1;
6354 ic->ic_regdomain.location = 'I';
6356 DPRINTF(sc, ATH_DEBUG_REGDOMAIN,
6357 "%s: eeprom rd %u cc %u (mapped rd %u cc %u) location %c%s\n",
6358 __func__, sc->sc_eerd, sc->sc_eecc,
6359 ic->ic_regdomain.regdomain, ic->ic_regdomain.country,
6360 ic->ic_regdomain.location, ic->ic_regdomain.ecm ? " ecm" : "");
6365 ath_rate_setup(struct ath_softc *sc, u_int mode)
6367 struct ath_hal *ah = sc->sc_ah;
6368 const HAL_RATE_TABLE *rt;
6371 case IEEE80211_MODE_11A:
6372 rt = ath_hal_getratetable(ah, HAL_MODE_11A);
6374 case IEEE80211_MODE_HALF:
6375 rt = ath_hal_getratetable(ah, HAL_MODE_11A_HALF_RATE);
6377 case IEEE80211_MODE_QUARTER:
6378 rt = ath_hal_getratetable(ah, HAL_MODE_11A_QUARTER_RATE);
6380 case IEEE80211_MODE_11B:
6381 rt = ath_hal_getratetable(ah, HAL_MODE_11B);
6383 case IEEE80211_MODE_11G:
6384 rt = ath_hal_getratetable(ah, HAL_MODE_11G);
6386 case IEEE80211_MODE_TURBO_A:
6387 rt = ath_hal_getratetable(ah, HAL_MODE_108A);
6389 case IEEE80211_MODE_TURBO_G:
6390 rt = ath_hal_getratetable(ah, HAL_MODE_108G);
6392 case IEEE80211_MODE_STURBO_A:
6393 rt = ath_hal_getratetable(ah, HAL_MODE_TURBO);
6395 case IEEE80211_MODE_11NA:
6396 rt = ath_hal_getratetable(ah, HAL_MODE_11NA_HT20);
6398 case IEEE80211_MODE_11NG:
6399 rt = ath_hal_getratetable(ah, HAL_MODE_11NG_HT20);
6402 DPRINTF(sc, ATH_DEBUG_ANY, "%s: invalid mode %u\n",
6406 sc->sc_rates[mode] = rt;
6407 return (rt != NULL);
6411 ath_setcurmode(struct ath_softc *sc, enum ieee80211_phymode mode)
6413 /* NB: on/off times from the Atheros NDIS driver, w/ permission */
6414 static const struct {
6415 u_int rate; /* tx/rx 802.11 rate */
6416 u_int16_t timeOn; /* LED on time (ms) */
6417 u_int16_t timeOff; /* LED off time (ms) */
6433 /* XXX half/quarter rates */
6435 const HAL_RATE_TABLE *rt;
6438 memset(sc->sc_rixmap, 0xff, sizeof(sc->sc_rixmap));
6439 rt = sc->sc_rates[mode];
6440 KASSERT(rt != NULL, ("no h/w rate set for phy mode %u", mode));
6441 for (i = 0; i < rt->rateCount; i++) {
6442 uint8_t ieeerate = rt->info[i].dot11Rate & IEEE80211_RATE_VAL;
6443 if (rt->info[i].phy != IEEE80211_T_HT)
6444 sc->sc_rixmap[ieeerate] = i;
6446 sc->sc_rixmap[ieeerate | IEEE80211_RATE_MCS] = i;
6448 memset(sc->sc_hwmap, 0, sizeof(sc->sc_hwmap));
6449 for (i = 0; i < nitems(sc->sc_hwmap); i++) {
6450 if (i >= rt->rateCount) {
6451 sc->sc_hwmap[i].ledon = (500 * hz) / 1000;
6452 sc->sc_hwmap[i].ledoff = (130 * hz) / 1000;
6455 sc->sc_hwmap[i].ieeerate =
6456 rt->info[i].dot11Rate & IEEE80211_RATE_VAL;
6457 if (rt->info[i].phy == IEEE80211_T_HT)
6458 sc->sc_hwmap[i].ieeerate |= IEEE80211_RATE_MCS;
6459 sc->sc_hwmap[i].txflags = IEEE80211_RADIOTAP_F_DATAPAD;
6460 if (rt->info[i].shortPreamble ||
6461 rt->info[i].phy == IEEE80211_T_OFDM)
6462 sc->sc_hwmap[i].txflags |= IEEE80211_RADIOTAP_F_SHORTPRE;
6463 sc->sc_hwmap[i].rxflags = sc->sc_hwmap[i].txflags;
6464 for (j = 0; j < nitems(blinkrates)-1; j++)
6465 if (blinkrates[j].rate == sc->sc_hwmap[i].ieeerate)
6467 /* NB: this uses the last entry if the rate isn't found */
6468 /* XXX beware of overlow */
6469 sc->sc_hwmap[i].ledon = (blinkrates[j].timeOn * hz) / 1000;
6470 sc->sc_hwmap[i].ledoff = (blinkrates[j].timeOff * hz) / 1000;
6472 sc->sc_currates = rt;
6473 sc->sc_curmode = mode;
6475 * All protection frames are transmitted at 2Mb/s for
6476 * 11g, otherwise at 1Mb/s.
6478 if (mode == IEEE80211_MODE_11G)
6479 sc->sc_protrix = ath_tx_findrix(sc, 2*2);
6481 sc->sc_protrix = ath_tx_findrix(sc, 2*1);
6482 /* NB: caller is responsible for resetting rate control state */
6486 ath_watchdog(void *arg)
6488 struct ath_softc *sc = arg;
6489 struct ieee80211com *ic = &sc->sc_ic;
6492 ATH_LOCK_ASSERT(sc);
6494 if (sc->sc_wd_timer != 0 && --sc->sc_wd_timer == 0) {
6497 ath_power_set_power_state(sc, HAL_PM_AWAKE);
6499 if (ath_hal_gethangstate(sc->sc_ah, 0xffff, &hangs) &&
6501 device_printf(sc->sc_dev, "%s hang detected (0x%x)\n",
6502 hangs & 0xff ? "bb" : "mac", hangs);
6504 device_printf(sc->sc_dev, "device timeout\n");
6506 counter_u64_add(ic->ic_oerrors, 1);
6507 sc->sc_stats.ast_watchdog++;
6509 ath_power_restore_power_state(sc);
6513 * We can't hold the lock across the ath_reset() call.
6515 * And since this routine can't hold a lock and sleep,
6516 * do the reset deferred.
6519 taskqueue_enqueue(sc->sc_tq, &sc->sc_resettask);
6522 callout_schedule(&sc->sc_wd_ch, hz);
6526 ath_parent(struct ieee80211com *ic)
6528 struct ath_softc *sc = ic->ic_softc;
6529 int error = EDOOFUS;
6532 if (ic->ic_nrunning > 0) {
6534 * To avoid rescanning another access point,
6535 * do not call ath_init() here. Instead,
6536 * only reflect promisc mode settings.
6538 if (sc->sc_running) {
6539 ath_power_set_power_state(sc, HAL_PM_AWAKE);
6541 ath_power_restore_power_state(sc);
6542 } else if (!sc->sc_invalid) {
6544 * Beware of being called during attach/detach
6545 * to reset promiscuous mode. In that case we
6546 * will still be marked UP but not RUNNING.
6547 * However trying to re-init the interface
6548 * is the wrong thing to do as we've already
6549 * torn down much of our state. There's
6550 * probably a better way to deal with this.
6552 error = ath_init(sc);
6556 if (!sc->sc_invalid)
6557 ath_power_setpower(sc, HAL_PM_FULL_SLEEP, 1);
6562 #ifdef ATH_TX99_DIAG
6563 if (sc->sc_tx99 != NULL)
6564 sc->sc_tx99->start(sc->sc_tx99);
6567 ieee80211_start_all(ic);
6572 * Announce various information on device/driver attach.
6575 ath_announce(struct ath_softc *sc)
6577 struct ath_hal *ah = sc->sc_ah;
6579 device_printf(sc->sc_dev, "%s mac %d.%d RF%s phy %d.%d\n",
6580 ath_hal_mac_name(ah), ah->ah_macVersion, ah->ah_macRev,
6581 ath_hal_rf_name(ah), ah->ah_phyRev >> 4, ah->ah_phyRev & 0xf);
6582 device_printf(sc->sc_dev, "2GHz radio: 0x%.4x; 5GHz radio: 0x%.4x\n",
6583 ah->ah_analog2GhzRev, ah->ah_analog5GhzRev);
6586 for (i = 0; i <= WME_AC_VO; i++) {
6587 struct ath_txq *txq = sc->sc_ac2q[i];
6588 device_printf(sc->sc_dev,
6589 "Use hw queue %u for %s traffic\n",
6590 txq->axq_qnum, ieee80211_wme_acnames[i]);
6592 device_printf(sc->sc_dev, "Use hw queue %u for CAB traffic\n",
6593 sc->sc_cabq->axq_qnum);
6594 device_printf(sc->sc_dev, "Use hw queue %u for beacons\n",
6597 if (ath_rxbuf != ATH_RXBUF)
6598 device_printf(sc->sc_dev, "using %u rx buffers\n", ath_rxbuf);
6599 if (ath_txbuf != ATH_TXBUF)
6600 device_printf(sc->sc_dev, "using %u tx buffers\n", ath_txbuf);
6601 if (sc->sc_mcastkey && bootverbose)
6602 device_printf(sc->sc_dev, "using multicast key search\n");
6606 ath_dfs_tasklet(void *p, int npending)
6608 struct ath_softc *sc = (struct ath_softc *) p;
6609 struct ieee80211com *ic = &sc->sc_ic;
6612 * If previous processing has found a radar event,
6613 * signal this to the net80211 layer to begin DFS
6616 if (ath_dfs_process_radar_event(sc, sc->sc_curchan)) {
6617 /* DFS event found, initiate channel change */
6620 * XXX TODO: immediately disable ACK processing
6621 * on the current channel. This would be done
6622 * by setting AR_DIAG_ACK_DIS (AR5212; may be
6623 * different for others) until we are out of
6628 * XXX doesn't currently tell us whether the event
6629 * XXX was found in the primary or extension
6633 ieee80211_dfs_notify_radar(ic, sc->sc_curchan);
6634 IEEE80211_UNLOCK(ic);
6639 * Enable/disable power save. This must be called with
6640 * no TX driver locks currently held, so it should only
6641 * be called from the RX path (which doesn't hold any
6645 ath_node_powersave(struct ieee80211_node *ni, int enable)
6648 struct ath_node *an = ATH_NODE(ni);
6649 struct ieee80211com *ic = ni->ni_ic;
6650 struct ath_softc *sc = ic->ic_softc;
6651 struct ath_vap *avp = ATH_VAP(ni->ni_vap);
6653 /* XXX and no TXQ locks should be held here */
6655 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE, "%s: %6D: enable=%d\n",
6661 /* Suspend or resume software queue handling */
6663 ath_tx_node_sleep(sc, an);
6665 ath_tx_node_wakeup(sc, an);
6667 /* Update net80211 state */
6668 avp->av_node_ps(ni, enable);
6670 struct ath_vap *avp = ATH_VAP(ni->ni_vap);
6672 /* Update net80211 state */
6673 avp->av_node_ps(ni, enable);
6674 #endif/* ATH_SW_PSQ */
6678 * Notification from net80211 that the powersave queue state has
6681 * Since the software queue also may have some frames:
6683 * + if the node software queue has frames and the TID state
6684 * is 0, we set the TIM;
6685 * + if the node and the stack are both empty, we clear the TIM bit.
6686 * + If the stack tries to set the bit, always set it.
6687 * + If the stack tries to clear the bit, only clear it if the
6688 * software queue in question is also cleared.
6690 * TODO: this is called during node teardown; so let's ensure this
6691 * is all correctly handled and that the TIM bit is cleared.
6692 * It may be that the node flush is called _AFTER_ the net80211
6693 * stack clears the TIM.
6695 * Here is the racy part. Since it's possible >1 concurrent,
6696 * overlapping TXes will appear complete with a TX completion in
6697 * another thread, it's possible that the concurrent TIM calls will
6698 * clash. We can't hold the node lock here because setting the
6699 * TIM grabs the net80211 comlock and this may cause a LOR.
6700 * The solution is either to totally serialise _everything_ at
6701 * this point (ie, all TX, completion and any reset/flush go into
6702 * one taskqueue) or a new "ath TIM lock" needs to be created that
6703 * just wraps the driver state change and this call to avp->av_set_tim().
6705 * The same race exists in the net80211 power save queue handling
6706 * as well. Since multiple transmitting threads may queue frames
6707 * into the driver, as well as ps-poll and the driver transmitting
6708 * frames (and thus clearing the psq), it's quite possible that
6709 * a packet entering the PSQ and a ps-poll being handled will
6710 * race, causing the TIM to be cleared and not re-set.
6713 ath_node_set_tim(struct ieee80211_node *ni, int enable)
6716 struct ieee80211com *ic = ni->ni_ic;
6717 struct ath_softc *sc = ic->ic_softc;
6718 struct ath_node *an = ATH_NODE(ni);
6719 struct ath_vap *avp = ATH_VAP(ni->ni_vap);
6723 an->an_stack_psq = enable;
6726 * This will get called for all operating modes,
6727 * even if avp->av_set_tim is unset.
6728 * It's currently set for hostap/ibss modes; but
6729 * the same infrastructure is used for both STA
6730 * and AP/IBSS node power save.
6732 if (avp->av_set_tim == NULL) {
6738 * If setting the bit, always set it here.
6739 * If clearing the bit, only clear it if the
6740 * software queue is also empty.
6742 * If the node has left power save, just clear the TIM
6743 * bit regardless of the state of the power save queue.
6745 * XXX TODO: although atomics are used, it's quite possible
6746 * that a race will occur between this and setting/clearing
6747 * in another thread. TX completion will occur always in
6748 * one thread, however setting/clearing the TIM bit can come
6749 * from a variety of different process contexts!
6751 if (enable && an->an_tim_set == 1) {
6752 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6753 "%s: %6D: enable=%d, tim_set=1, ignoring\n",
6759 } else if (enable) {
6760 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6761 "%s: %6D: enable=%d, enabling TIM\n",
6768 changed = avp->av_set_tim(ni, enable);
6769 } else if (an->an_swq_depth == 0) {
6771 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6772 "%s: %6D: enable=%d, an_swq_depth == 0, disabling\n",
6779 changed = avp->av_set_tim(ni, enable);
6780 } else if (! an->an_is_powersave) {
6782 * disable regardless; the node isn't in powersave now
6784 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6785 "%s: %6D: enable=%d, an_pwrsave=0, disabling\n",
6792 changed = avp->av_set_tim(ni, enable);
6795 * psq disable, node is currently in powersave, node
6796 * software queue isn't empty, so don't clear the TIM bit
6800 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6801 "%s: %6D: enable=%d, an_swq_depth > 0, ignoring\n",
6811 struct ath_vap *avp = ATH_VAP(ni->ni_vap);
6814 * Some operating modes don't set av_set_tim(), so don't
6817 if (avp->av_set_tim == NULL)
6820 return (avp->av_set_tim(ni, enable));
6821 #endif /* ATH_SW_PSQ */
6825 * Set or update the TIM from the software queue.
6827 * Check the software queue depth before attempting to do lock
6828 * anything; that avoids trying to obtain the lock. Then,
6829 * re-check afterwards to ensure nothing has changed in the
6832 * set: This is designed to be called from the TX path, after
6833 * a frame has been queued; to see if the swq > 0.
6835 * clear: This is designed to be called from the buffer completion point
6836 * (right now it's ath_tx_default_comp()) where the state of
6837 * a software queue has changed.
6839 * It makes sense to place it at buffer free / completion rather
6840 * than after each software queue operation, as there's no real
6841 * point in churning the TIM bit as the last frames in the software
6842 * queue are transmitted. If they fail and we retry them, we'd
6843 * just be setting the TIM bit again anyway.
6846 ath_tx_update_tim(struct ath_softc *sc, struct ieee80211_node *ni,
6850 struct ath_node *an;
6851 struct ath_vap *avp;
6853 /* Don't do this for broadcast/etc frames */
6858 avp = ATH_VAP(ni->ni_vap);
6861 * And for operating modes without the TIM handler set, let's
6864 if (avp->av_set_tim == NULL)
6867 ATH_TX_LOCK_ASSERT(sc);
6870 if (an->an_is_powersave &&
6871 an->an_tim_set == 0 &&
6872 an->an_swq_depth != 0) {
6873 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6874 "%s: %6D: swq_depth>0, tim_set=0, set!\n",
6879 (void) avp->av_set_tim(ni, 1);
6883 * Don't bother grabbing the lock unless the queue is empty.
6885 if (an->an_swq_depth != 0)
6888 if (an->an_is_powersave &&
6889 an->an_stack_psq == 0 &&
6890 an->an_tim_set == 1 &&
6891 an->an_swq_depth == 0) {
6892 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6893 "%s: %6D: swq_depth=0, tim_set=1, psq_set=0,"
6899 (void) avp->av_set_tim(ni, 0);
6904 #endif /* ATH_SW_PSQ */
6908 * Received a ps-poll frame from net80211.
6910 * Here we get a chance to serve out a software-queued frame ourselves
6911 * before we punt it to net80211 to transmit us one itself - either
6912 * because there's traffic in the net80211 psq, or a NULL frame to
6913 * indicate there's nothing else.
6916 ath_node_recv_pspoll(struct ieee80211_node *ni, struct mbuf *m)
6919 struct ath_node *an;
6920 struct ath_vap *avp;
6921 struct ieee80211com *ic = ni->ni_ic;
6922 struct ath_softc *sc = ic->ic_softc;
6930 * Unassociated (temporary node) station.
6932 if (ni->ni_associd == 0)
6936 * We do have an active node, so let's begin looking into it.
6939 avp = ATH_VAP(ni->ni_vap);
6942 * For now, we just call the original ps-poll method.
6943 * Once we're ready to flip this on:
6945 * + Set leak to 1, as no matter what we're going to have
6947 * + Check the software queue and if there's something in it,
6948 * schedule the highest TID thas has traffic from this node.
6949 * Then make sure we schedule the software scheduler to
6950 * run so it picks up said frame.
6952 * That way whatever happens, we'll at least send _a_ frame
6953 * to the given node.
6955 * Again, yes, it's crappy QoS if the node has multiple
6956 * TIDs worth of traffic - but let's get it working first
6957 * before we optimise it.
6959 * Also yes, there's definitely latency here - we're not
6960 * direct dispatching to the hardware in this path (and
6961 * we're likely being called from the packet receive path,
6962 * so going back into TX may be a little hairy!) but again
6963 * I'd like to get this working first before optimising
6970 * Legacy - we're called and the node isn't asleep.
6973 if (! an->an_is_powersave) {
6974 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6975 "%s: %6D: not in powersave?\n",
6980 avp->av_recv_pspoll(ni, m);
6985 * We're in powersave.
6989 an->an_leak_count = 1;
6992 * Now, if there's no frames in the node, just punt to
6995 * Don't bother checking if the TIM bit is set, we really
6996 * only care if there are any frames here!
6998 if (an->an_swq_depth == 0) {
7000 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
7001 "%s: %6D: SWQ empty; punting to net80211\n",
7005 avp->av_recv_pspoll(ni, m);
7010 * Ok, let's schedule the highest TID that has traffic
7011 * and then schedule something.
7013 for (tid = IEEE80211_TID_SIZE - 1; tid >= 0; tid--) {
7014 struct ath_tid *atid = &an->an_tid[tid];
7018 if (atid->axq_depth == 0)
7020 ath_tx_tid_sched(sc, atid);
7022 * XXX we could do a direct call to the TXQ
7023 * scheduler code here to optimise latency
7024 * at the expense of a REALLY deep callstack.
7027 taskqueue_enqueue(sc->sc_tq, &sc->sc_txqtask);
7028 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
7029 "%s: %6D: leaking frame to TID %d\n",
7040 * XXX nothing in the TIDs at this point? Eek.
7042 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
7043 "%s: %6D: TIDs empty, but ath_node showed traffic?!\n",
7047 avp->av_recv_pspoll(ni, m);
7049 avp->av_recv_pspoll(ni, m);
7050 #endif /* ATH_SW_PSQ */
7053 MODULE_VERSION(ath_main, 1);
7054 MODULE_DEPEND(ath_main, wlan, 1, 1, 1); /* 802.11 media layer */
7055 MODULE_DEPEND(ath_main, ath_rate, 1, 1, 1);
7056 MODULE_DEPEND(ath_main, ath_dfs, 1, 1, 1);
7057 MODULE_DEPEND(ath_main, ath_hal, 1, 1, 1);
7058 #if defined(IEEE80211_ALQ) || defined(AH_DEBUG_ALQ) || defined(ATH_DEBUG_ALQ)
7059 MODULE_DEPEND(ath_main, alq, 1, 1, 1);