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 * Driver-internal mcast update call.
3597 * Assumes the hardware is already awake.
3600 ath_update_mcast_hw(struct ath_softc *sc)
3602 struct ieee80211com *ic = &sc->sc_ic;
3605 /* calculate and install multicast filter */
3606 if (ic->ic_allmulti == 0) {
3607 struct ieee80211vap *vap;
3609 struct ifmultiaddr *ifma;
3612 * Merge multicast addresses to form the hardware filter.
3614 mfilt[0] = mfilt[1] = 0;
3615 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
3617 if_maddr_rlock(ifp);
3618 CK_STAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
3623 /* calculate XOR of eight 6bit values */
3624 dl = LLADDR((struct sockaddr_dl *)
3626 val = le32dec(dl + 0);
3627 pos = (val >> 18) ^ (val >> 12) ^ (val >> 6) ^
3629 val = le32dec(dl + 3);
3630 pos ^= (val >> 18) ^ (val >> 12) ^ (val >> 6) ^
3633 mfilt[pos / 32] |= (1 << (pos % 32));
3635 if_maddr_runlock(ifp);
3638 mfilt[0] = mfilt[1] = ~0;
3640 ath_hal_setmcastfilter(sc->sc_ah, mfilt[0], mfilt[1]);
3642 DPRINTF(sc, ATH_DEBUG_MODE, "%s: MC filter %08x:%08x\n",
3643 __func__, mfilt[0], mfilt[1]);
3647 * Called from the net80211 layer - force the hardware
3648 * awake before operating.
3651 ath_update_mcast(struct ieee80211com *ic)
3653 struct ath_softc *sc = ic->ic_softc;
3656 ath_power_set_power_state(sc, HAL_PM_AWAKE);
3659 ath_update_mcast_hw(sc);
3662 ath_power_restore_power_state(sc);
3667 ath_mode_init(struct ath_softc *sc)
3669 struct ieee80211com *ic = &sc->sc_ic;
3670 struct ath_hal *ah = sc->sc_ah;
3673 /* XXX power state? */
3675 /* configure rx filter */
3676 rfilt = ath_calcrxfilter(sc);
3677 ath_hal_setrxfilter(ah, rfilt);
3679 /* configure operational mode */
3680 ath_hal_setopmode(ah);
3682 /* handle any link-level address change */
3683 ath_hal_setmac(ah, ic->ic_macaddr);
3685 /* calculate and install multicast filter */
3686 ath_update_mcast_hw(sc);
3690 * Set the slot time based on the current setting.
3693 ath_setslottime(struct ath_softc *sc)
3695 struct ieee80211com *ic = &sc->sc_ic;
3696 struct ath_hal *ah = sc->sc_ah;
3699 if (IEEE80211_IS_CHAN_HALF(ic->ic_curchan))
3701 else if (IEEE80211_IS_CHAN_QUARTER(ic->ic_curchan))
3703 else if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan)) {
3704 /* honor short/long slot time only in 11g */
3705 /* XXX shouldn't honor on pure g or turbo g channel */
3706 if (ic->ic_flags & IEEE80211_F_SHSLOT)
3707 usec = HAL_SLOT_TIME_9;
3709 usec = HAL_SLOT_TIME_20;
3711 usec = HAL_SLOT_TIME_9;
3713 DPRINTF(sc, ATH_DEBUG_RESET,
3714 "%s: chan %u MHz flags 0x%x %s slot, %u usec\n",
3715 __func__, ic->ic_curchan->ic_freq, ic->ic_curchan->ic_flags,
3716 ic->ic_flags & IEEE80211_F_SHSLOT ? "short" : "long", usec);
3718 /* Wake up the hardware first before updating the slot time */
3720 ath_power_set_power_state(sc, HAL_PM_AWAKE);
3721 ath_hal_setslottime(ah, usec);
3722 ath_power_restore_power_state(sc);
3723 sc->sc_updateslot = OK;
3728 * Callback from the 802.11 layer to update the
3729 * slot time based on the current setting.
3732 ath_updateslot(struct ieee80211com *ic)
3734 struct ath_softc *sc = ic->ic_softc;
3737 * When not coordinating the BSS, change the hardware
3738 * immediately. For other operation we defer the change
3739 * until beacon updates have propagated to the stations.
3741 * XXX sc_updateslot isn't changed behind a lock?
3743 if (ic->ic_opmode == IEEE80211_M_HOSTAP ||
3744 ic->ic_opmode == IEEE80211_M_MBSS)
3745 sc->sc_updateslot = UPDATE;
3747 ath_setslottime(sc);
3751 * Append the contents of src to dst; both queues
3752 * are assumed to be locked.
3755 ath_txqmove(struct ath_txq *dst, struct ath_txq *src)
3758 ATH_TXQ_LOCK_ASSERT(src);
3759 ATH_TXQ_LOCK_ASSERT(dst);
3761 TAILQ_CONCAT(&dst->axq_q, &src->axq_q, bf_list);
3762 dst->axq_link = src->axq_link;
3763 src->axq_link = NULL;
3764 dst->axq_depth += src->axq_depth;
3765 dst->axq_aggr_depth += src->axq_aggr_depth;
3767 src->axq_aggr_depth = 0;
3771 * Reset the hardware, with no loss.
3773 * This can't be used for a general case reset.
3776 ath_reset_proc(void *arg, int pending)
3778 struct ath_softc *sc = arg;
3781 device_printf(sc->sc_dev, "%s: resetting\n", __func__);
3783 ath_reset(sc, ATH_RESET_NOLOSS);
3787 * Reset the hardware after detecting beacons have stopped.
3790 ath_bstuck_proc(void *arg, int pending)
3792 struct ath_softc *sc = arg;
3795 if (ath_hal_gethangstate(sc->sc_ah, 0xff, &hangs) && hangs != 0)
3796 device_printf(sc->sc_dev, "bb hang detected (0x%x)\n", hangs);
3798 #ifdef ATH_DEBUG_ALQ
3799 if (if_ath_alq_checkdebug(&sc->sc_alq, ATH_ALQ_STUCK_BEACON))
3800 if_ath_alq_post(&sc->sc_alq, ATH_ALQ_STUCK_BEACON, 0, NULL);
3803 device_printf(sc->sc_dev, "stuck beacon; resetting (bmiss count %u)\n",
3805 sc->sc_stats.ast_bstuck++;
3807 * This assumes that there's no simultaneous channel mode change
3810 ath_reset(sc, ATH_RESET_NOLOSS);
3814 ath_desc_alloc(struct ath_softc *sc)
3818 error = ath_descdma_setup(sc, &sc->sc_txdma, &sc->sc_txbuf,
3819 "tx", sc->sc_tx_desclen, ath_txbuf, ATH_MAX_SCATTER);
3823 sc->sc_txbuf_cnt = ath_txbuf;
3825 error = ath_descdma_setup(sc, &sc->sc_txdma_mgmt, &sc->sc_txbuf_mgmt,
3826 "tx_mgmt", sc->sc_tx_desclen, ath_txbuf_mgmt,
3829 ath_descdma_cleanup(sc, &sc->sc_txdma, &sc->sc_txbuf);
3834 * XXX mark txbuf_mgmt frames with ATH_BUF_MGMT, so the
3835 * flag doesn't have to be set in ath_getbuf_locked().
3838 error = ath_descdma_setup(sc, &sc->sc_bdma, &sc->sc_bbuf,
3839 "beacon", sc->sc_tx_desclen, ATH_BCBUF, 1);
3841 ath_descdma_cleanup(sc, &sc->sc_txdma, &sc->sc_txbuf);
3842 ath_descdma_cleanup(sc, &sc->sc_txdma_mgmt,
3843 &sc->sc_txbuf_mgmt);
3850 ath_desc_free(struct ath_softc *sc)
3853 if (sc->sc_bdma.dd_desc_len != 0)
3854 ath_descdma_cleanup(sc, &sc->sc_bdma, &sc->sc_bbuf);
3855 if (sc->sc_txdma.dd_desc_len != 0)
3856 ath_descdma_cleanup(sc, &sc->sc_txdma, &sc->sc_txbuf);
3857 if (sc->sc_txdma_mgmt.dd_desc_len != 0)
3858 ath_descdma_cleanup(sc, &sc->sc_txdma_mgmt,
3859 &sc->sc_txbuf_mgmt);
3862 static struct ieee80211_node *
3863 ath_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN])
3865 struct ieee80211com *ic = vap->iv_ic;
3866 struct ath_softc *sc = ic->ic_softc;
3867 const size_t space = sizeof(struct ath_node) + sc->sc_rc->arc_space;
3868 struct ath_node *an;
3870 an = malloc(space, M_80211_NODE, M_NOWAIT|M_ZERO);
3875 ath_rate_node_init(sc, an);
3877 /* Setup the mutex - there's no associd yet so set the name to NULL */
3878 snprintf(an->an_name, sizeof(an->an_name), "%s: node %p",
3879 device_get_nameunit(sc->sc_dev), an);
3880 mtx_init(&an->an_mtx, an->an_name, NULL, MTX_DEF);
3882 /* XXX setup ath_tid */
3883 ath_tx_tid_init(sc, an);
3885 an->an_node_stats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
3886 an->an_node_stats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
3887 an->an_node_stats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
3889 DPRINTF(sc, ATH_DEBUG_NODE, "%s: %6D: an %p\n", __func__, mac, ":", an);
3890 return &an->an_node;
3894 ath_node_cleanup(struct ieee80211_node *ni)
3896 struct ieee80211com *ic = ni->ni_ic;
3897 struct ath_softc *sc = ic->ic_softc;
3899 DPRINTF(sc, ATH_DEBUG_NODE, "%s: %6D: an %p\n", __func__,
3900 ni->ni_macaddr, ":", ATH_NODE(ni));
3902 /* Cleanup ath_tid, free unused bufs, unlink bufs in TXQ */
3903 ath_tx_node_flush(sc, ATH_NODE(ni));
3904 ath_rate_node_cleanup(sc, ATH_NODE(ni));
3905 sc->sc_node_cleanup(ni);
3909 ath_node_free(struct ieee80211_node *ni)
3911 struct ieee80211com *ic = ni->ni_ic;
3912 struct ath_softc *sc = ic->ic_softc;
3914 DPRINTF(sc, ATH_DEBUG_NODE, "%s: %6D: an %p\n", __func__,
3915 ni->ni_macaddr, ":", ATH_NODE(ni));
3916 mtx_destroy(&ATH_NODE(ni)->an_mtx);
3917 sc->sc_node_free(ni);
3921 ath_node_getsignal(const struct ieee80211_node *ni, int8_t *rssi, int8_t *noise)
3923 struct ieee80211com *ic = ni->ni_ic;
3924 struct ath_softc *sc = ic->ic_softc;
3925 struct ath_hal *ah = sc->sc_ah;
3927 *rssi = ic->ic_node_getrssi(ni);
3928 if (ni->ni_chan != IEEE80211_CHAN_ANYC)
3929 *noise = ath_hal_getchannoise(ah, ni->ni_chan);
3931 *noise = -95; /* nominally correct */
3935 * Set the default antenna.
3938 ath_setdefantenna(struct ath_softc *sc, u_int antenna)
3940 struct ath_hal *ah = sc->sc_ah;
3942 /* XXX block beacon interrupts */
3943 ath_hal_setdefantenna(ah, antenna);
3944 if (sc->sc_defant != antenna)
3945 sc->sc_stats.ast_ant_defswitch++;
3946 sc->sc_defant = antenna;
3947 sc->sc_rxotherant = 0;
3951 ath_txq_init(struct ath_softc *sc, struct ath_txq *txq, int qnum)
3953 txq->axq_qnum = qnum;
3956 txq->axq_aggr_depth = 0;
3957 txq->axq_intrcnt = 0;
3958 txq->axq_link = NULL;
3959 txq->axq_softc = sc;
3960 TAILQ_INIT(&txq->axq_q);
3961 TAILQ_INIT(&txq->axq_tidq);
3962 TAILQ_INIT(&txq->fifo.axq_q);
3963 ATH_TXQ_LOCK_INIT(sc, txq);
3967 * Setup a h/w transmit queue.
3969 static struct ath_txq *
3970 ath_txq_setup(struct ath_softc *sc, int qtype, int subtype)
3972 struct ath_hal *ah = sc->sc_ah;
3976 memset(&qi, 0, sizeof(qi));
3977 qi.tqi_subtype = subtype;
3978 qi.tqi_aifs = HAL_TXQ_USEDEFAULT;
3979 qi.tqi_cwmin = HAL_TXQ_USEDEFAULT;
3980 qi.tqi_cwmax = HAL_TXQ_USEDEFAULT;
3982 * Enable interrupts only for EOL and DESC conditions.
3983 * We mark tx descriptors to receive a DESC interrupt
3984 * when a tx queue gets deep; otherwise waiting for the
3985 * EOL to reap descriptors. Note that this is done to
3986 * reduce interrupt load and this only defers reaping
3987 * descriptors, never transmitting frames. Aside from
3988 * reducing interrupts this also permits more concurrency.
3989 * The only potential downside is if the tx queue backs
3990 * up in which case the top half of the kernel may backup
3991 * due to a lack of tx descriptors.
3994 qi.tqi_qflags = HAL_TXQ_TXEOLINT_ENABLE |
3995 HAL_TXQ_TXOKINT_ENABLE;
3997 qi.tqi_qflags = HAL_TXQ_TXEOLINT_ENABLE |
3998 HAL_TXQ_TXDESCINT_ENABLE;
4000 qnum = ath_hal_setuptxqueue(ah, qtype, &qi);
4003 * NB: don't print a message, this happens
4004 * normally on parts with too few tx queues
4008 if (qnum >= nitems(sc->sc_txq)) {
4009 device_printf(sc->sc_dev,
4010 "hal qnum %u out of range, max %zu!\n",
4011 qnum, nitems(sc->sc_txq));
4012 ath_hal_releasetxqueue(ah, qnum);
4015 if (!ATH_TXQ_SETUP(sc, qnum)) {
4016 ath_txq_init(sc, &sc->sc_txq[qnum], qnum);
4017 sc->sc_txqsetup |= 1<<qnum;
4019 return &sc->sc_txq[qnum];
4023 * Setup a hardware data transmit queue for the specified
4024 * access control. The hal may not support all requested
4025 * queues in which case it will return a reference to a
4026 * previously setup queue. We record the mapping from ac's
4027 * to h/w queues for use by ath_tx_start and also track
4028 * the set of h/w queues being used to optimize work in the
4029 * transmit interrupt handler and related routines.
4032 ath_tx_setup(struct ath_softc *sc, int ac, int haltype)
4034 struct ath_txq *txq;
4036 if (ac >= nitems(sc->sc_ac2q)) {
4037 device_printf(sc->sc_dev, "AC %u out of range, max %zu!\n",
4038 ac, nitems(sc->sc_ac2q));
4041 txq = ath_txq_setup(sc, HAL_TX_QUEUE_DATA, haltype);
4044 sc->sc_ac2q[ac] = txq;
4051 * Update WME parameters for a transmit queue.
4054 ath_txq_update(struct ath_softc *sc, int ac)
4056 #define ATH_EXPONENT_TO_VALUE(v) ((1<<v)-1)
4057 struct ieee80211com *ic = &sc->sc_ic;
4058 struct ath_txq *txq = sc->sc_ac2q[ac];
4059 struct chanAccParams chp;
4060 struct wmeParams *wmep;
4061 struct ath_hal *ah = sc->sc_ah;
4064 ieee80211_wme_ic_getparams(ic, &chp);
4065 wmep = &chp.cap_wmeParams[ac];
4067 ath_hal_gettxqueueprops(ah, txq->axq_qnum, &qi);
4068 #ifdef IEEE80211_SUPPORT_TDMA
4071 * AIFS is zero so there's no pre-transmit wait. The
4072 * burst time defines the slot duration and is configured
4073 * through net80211. The QCU is setup to not do post-xmit
4074 * back off, lockout all lower-priority QCU's, and fire
4075 * off the DMA beacon alert timer which is setup based
4076 * on the slot configuration.
4078 qi.tqi_qflags = HAL_TXQ_TXOKINT_ENABLE
4079 | HAL_TXQ_TXERRINT_ENABLE
4080 | HAL_TXQ_TXURNINT_ENABLE
4081 | HAL_TXQ_TXEOLINT_ENABLE
4083 | HAL_TXQ_BACKOFF_DISABLE
4084 | HAL_TXQ_ARB_LOCKOUT_GLOBAL
4088 qi.tqi_readyTime = sc->sc_tdmaslotlen;
4089 qi.tqi_burstTime = qi.tqi_readyTime;
4093 * XXX shouldn't this just use the default flags
4094 * used in the previous queue setup?
4096 qi.tqi_qflags = HAL_TXQ_TXOKINT_ENABLE
4097 | HAL_TXQ_TXERRINT_ENABLE
4098 | HAL_TXQ_TXDESCINT_ENABLE
4099 | HAL_TXQ_TXURNINT_ENABLE
4100 | HAL_TXQ_TXEOLINT_ENABLE
4102 qi.tqi_aifs = wmep->wmep_aifsn;
4103 qi.tqi_cwmin = ATH_EXPONENT_TO_VALUE(wmep->wmep_logcwmin);
4104 qi.tqi_cwmax = ATH_EXPONENT_TO_VALUE(wmep->wmep_logcwmax);
4105 qi.tqi_readyTime = 0;
4106 qi.tqi_burstTime = IEEE80211_TXOP_TO_US(wmep->wmep_txopLimit);
4107 #ifdef IEEE80211_SUPPORT_TDMA
4111 DPRINTF(sc, ATH_DEBUG_RESET,
4112 "%s: Q%u qflags 0x%x aifs %u cwmin %u cwmax %u burstTime %u\n",
4113 __func__, txq->axq_qnum, qi.tqi_qflags,
4114 qi.tqi_aifs, qi.tqi_cwmin, qi.tqi_cwmax, qi.tqi_burstTime);
4116 if (!ath_hal_settxqueueprops(ah, txq->axq_qnum, &qi)) {
4117 device_printf(sc->sc_dev, "unable to update hardware queue "
4118 "parameters for %s traffic!\n", ieee80211_wme_acnames[ac]);
4121 ath_hal_resettxqueue(ah, txq->axq_qnum); /* push to h/w */
4124 #undef ATH_EXPONENT_TO_VALUE
4128 * Callback from the 802.11 layer to update WME parameters.
4131 ath_wme_update(struct ieee80211com *ic)
4133 struct ath_softc *sc = ic->ic_softc;
4135 return !ath_txq_update(sc, WME_AC_BE) ||
4136 !ath_txq_update(sc, WME_AC_BK) ||
4137 !ath_txq_update(sc, WME_AC_VI) ||
4138 !ath_txq_update(sc, WME_AC_VO) ? EIO : 0;
4142 * Reclaim resources for a setup queue.
4145 ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq)
4148 ath_hal_releasetxqueue(sc->sc_ah, txq->axq_qnum);
4149 sc->sc_txqsetup &= ~(1<<txq->axq_qnum);
4150 ATH_TXQ_LOCK_DESTROY(txq);
4154 * Reclaim all tx queue resources.
4157 ath_tx_cleanup(struct ath_softc *sc)
4161 ATH_TXBUF_LOCK_DESTROY(sc);
4162 for (i = 0; i < HAL_NUM_TX_QUEUES; i++)
4163 if (ATH_TXQ_SETUP(sc, i))
4164 ath_tx_cleanupq(sc, &sc->sc_txq[i]);
4168 * Return h/w rate index for an IEEE rate (w/o basic rate bit)
4169 * using the current rates in sc_rixmap.
4172 ath_tx_findrix(const struct ath_softc *sc, uint8_t rate)
4174 int rix = sc->sc_rixmap[rate];
4175 /* NB: return lowest rix for invalid rate */
4176 return (rix == 0xff ? 0 : rix);
4180 ath_tx_update_stats(struct ath_softc *sc, struct ath_tx_status *ts,
4183 struct ieee80211_node *ni = bf->bf_node;
4184 struct ieee80211com *ic = &sc->sc_ic;
4187 if (ts->ts_status == 0) {
4188 u_int8_t txant = ts->ts_antenna;
4189 sc->sc_stats.ast_ant_tx[txant]++;
4190 sc->sc_ant_tx[txant]++;
4191 if (ts->ts_finaltsi != 0)
4192 sc->sc_stats.ast_tx_altrate++;
4194 /* XXX TODO: should do per-pri conuters */
4195 pri = M_WME_GETAC(bf->bf_m);
4196 if (pri >= WME_AC_VO)
4197 ic->ic_wme.wme_hipri_traffic++;
4199 if ((bf->bf_state.bfs_txflags & HAL_TXDESC_NOACK) == 0)
4200 ni->ni_inact = ni->ni_inact_reload;
4202 if (ts->ts_status & HAL_TXERR_XRETRY)
4203 sc->sc_stats.ast_tx_xretries++;
4204 if (ts->ts_status & HAL_TXERR_FIFO)
4205 sc->sc_stats.ast_tx_fifoerr++;
4206 if (ts->ts_status & HAL_TXERR_FILT)
4207 sc->sc_stats.ast_tx_filtered++;
4208 if (ts->ts_status & HAL_TXERR_XTXOP)
4209 sc->sc_stats.ast_tx_xtxop++;
4210 if (ts->ts_status & HAL_TXERR_TIMER_EXPIRED)
4211 sc->sc_stats.ast_tx_timerexpired++;
4213 if (bf->bf_m->m_flags & M_FF)
4214 sc->sc_stats.ast_ff_txerr++;
4216 /* XXX when is this valid? */
4217 if (ts->ts_flags & HAL_TX_DESC_CFG_ERR)
4218 sc->sc_stats.ast_tx_desccfgerr++;
4220 * This can be valid for successful frame transmission!
4221 * If there's a TX FIFO underrun during aggregate transmission,
4222 * the MAC will pad the rest of the aggregate with delimiters.
4223 * If a BA is returned, the frame is marked as "OK" and it's up
4224 * to the TX completion code to notice which frames weren't
4225 * successfully transmitted.
4227 if (ts->ts_flags & HAL_TX_DATA_UNDERRUN)
4228 sc->sc_stats.ast_tx_data_underrun++;
4229 if (ts->ts_flags & HAL_TX_DELIM_UNDERRUN)
4230 sc->sc_stats.ast_tx_delim_underrun++;
4232 sr = ts->ts_shortretry;
4233 lr = ts->ts_longretry;
4234 sc->sc_stats.ast_tx_shortretry += sr;
4235 sc->sc_stats.ast_tx_longretry += lr;
4240 * The default completion. If fail is 1, this means
4241 * "please don't retry the frame, and just return -1 status
4242 * to the net80211 stack.
4245 ath_tx_default_comp(struct ath_softc *sc, struct ath_buf *bf, int fail)
4247 struct ath_tx_status *ts = &bf->bf_status.ds_txstat;
4253 st = ((bf->bf_state.bfs_txflags & HAL_TXDESC_NOACK) == 0) ?
4254 ts->ts_status : HAL_TXERR_XRETRY;
4257 if (bf->bf_state.bfs_dobaw)
4258 device_printf(sc->sc_dev,
4259 "%s: bf %p: seqno %d: dobaw should've been cleared!\n",
4262 SEQNO(bf->bf_state.bfs_seqno));
4264 if (bf->bf_next != NULL)
4265 device_printf(sc->sc_dev,
4266 "%s: bf %p: seqno %d: bf_next not NULL!\n",
4269 SEQNO(bf->bf_state.bfs_seqno));
4272 * Check if the node software queue is empty; if so
4273 * then clear the TIM.
4275 * This needs to be done before the buffer is freed as
4276 * otherwise the node reference will have been released
4277 * and the node may not actually exist any longer.
4279 * XXX I don't like this belonging here, but it's cleaner
4280 * to do it here right now then all the other places
4281 * where ath_tx_default_comp() is called.
4283 * XXX TODO: during drain, ensure that the callback is
4284 * being called so we get a chance to update the TIM.
4288 ath_tx_update_tim(sc, bf->bf_node, 0);
4293 * Do any tx complete callback. Note this must
4294 * be done before releasing the node reference.
4295 * This will free the mbuf, release the net80211
4296 * node and recycle the ath_buf.
4298 ath_tx_freebuf(sc, bf, st);
4302 * Update rate control with the given completion status.
4305 ath_tx_update_ratectrl(struct ath_softc *sc, struct ieee80211_node *ni,
4306 struct ath_rc_series *rc, struct ath_tx_status *ts, int frmlen,
4307 int nframes, int nbad)
4309 struct ath_node *an;
4311 /* Only for unicast frames */
4316 ATH_NODE_UNLOCK_ASSERT(an);
4318 if ((ts->ts_status & HAL_TXERR_FILT) == 0) {
4320 ath_rate_tx_complete(sc, an, rc, ts, frmlen, nframes, nbad);
4321 ATH_NODE_UNLOCK(an);
4326 * Process the completion of the given buffer.
4328 * This calls the rate control update and then the buffer completion.
4329 * This will either free the buffer or requeue it. In any case, the
4330 * bf pointer should be treated as invalid after this function is called.
4333 ath_tx_process_buf_completion(struct ath_softc *sc, struct ath_txq *txq,
4334 struct ath_tx_status *ts, struct ath_buf *bf)
4336 struct ieee80211_node *ni = bf->bf_node;
4338 ATH_TX_UNLOCK_ASSERT(sc);
4339 ATH_TXQ_UNLOCK_ASSERT(txq);
4341 /* If unicast frame, update general statistics */
4343 /* update statistics */
4344 ath_tx_update_stats(sc, ts, bf);
4348 * Call the completion handler.
4349 * The completion handler is responsible for
4350 * calling the rate control code.
4352 * Frames with no completion handler get the
4353 * rate control code called here.
4355 if (bf->bf_comp == NULL) {
4356 if ((ts->ts_status & HAL_TXERR_FILT) == 0 &&
4357 (bf->bf_state.bfs_txflags & HAL_TXDESC_NOACK) == 0) {
4359 * XXX assume this isn't an aggregate
4362 ath_tx_update_ratectrl(sc, ni,
4363 bf->bf_state.bfs_rc, ts,
4364 bf->bf_state.bfs_pktlen, 1,
4365 (ts->ts_status == 0 ? 0 : 1));
4367 ath_tx_default_comp(sc, bf, 0);
4369 bf->bf_comp(sc, bf, 0);
4375 * Process completed xmit descriptors from the specified queue.
4376 * Kick the packet scheduler if needed. This can occur from this
4380 ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq, int dosched)
4382 struct ath_hal *ah = sc->sc_ah;
4384 struct ath_desc *ds;
4385 struct ath_tx_status *ts;
4386 struct ieee80211_node *ni;
4387 #ifdef IEEE80211_SUPPORT_SUPERG
4388 struct ieee80211com *ic = &sc->sc_ic;
4389 #endif /* IEEE80211_SUPPORT_SUPERG */
4393 DPRINTF(sc, ATH_DEBUG_TX_PROC, "%s: tx queue %u head %p link %p\n",
4394 __func__, txq->axq_qnum,
4395 (caddr_t)(uintptr_t) ath_hal_gettxbuf(sc->sc_ah, txq->axq_qnum),
4398 ATH_KTR(sc, ATH_KTR_TXCOMP, 4,
4399 "ath_tx_processq: txq=%u head %p link %p depth %p",
4401 (caddr_t)(uintptr_t) ath_hal_gettxbuf(sc->sc_ah, txq->axq_qnum),
4408 txq->axq_intrcnt = 0; /* reset periodic desc intr count */
4409 bf = TAILQ_FIRST(&txq->axq_q);
4411 ATH_TXQ_UNLOCK(txq);
4414 ds = bf->bf_lastds; /* XXX must be setup correctly! */
4415 ts = &bf->bf_status.ds_txstat;
4417 status = ath_hal_txprocdesc(ah, ds, ts);
4419 if (sc->sc_debug & ATH_DEBUG_XMIT_DESC)
4420 ath_printtxbuf(sc, bf, txq->axq_qnum, 0,
4422 else if ((sc->sc_debug & ATH_DEBUG_RESET) && (dosched == 0))
4423 ath_printtxbuf(sc, bf, txq->axq_qnum, 0,
4426 #ifdef ATH_DEBUG_ALQ
4427 if (if_ath_alq_checkdebug(&sc->sc_alq,
4428 ATH_ALQ_EDMA_TXSTATUS)) {
4429 if_ath_alq_post(&sc->sc_alq, ATH_ALQ_EDMA_TXSTATUS,
4430 sc->sc_tx_statuslen,
4435 if (status == HAL_EINPROGRESS) {
4436 ATH_KTR(sc, ATH_KTR_TXCOMP, 3,
4437 "ath_tx_processq: txq=%u, bf=%p ds=%p, HAL_EINPROGRESS",
4438 txq->axq_qnum, bf, ds);
4439 ATH_TXQ_UNLOCK(txq);
4442 ATH_TXQ_REMOVE(txq, bf, bf_list);
4447 if (txq->axq_qnum != bf->bf_state.bfs_tx_queue) {
4448 device_printf(sc->sc_dev,
4449 "%s: TXQ=%d: bf=%p, bfs_tx_queue=%d\n",
4453 bf->bf_state.bfs_tx_queue);
4455 if (txq->axq_qnum != bf->bf_last->bf_state.bfs_tx_queue) {
4456 device_printf(sc->sc_dev,
4457 "%s: TXQ=%d: bf_last=%p, bfs_tx_queue=%d\n",
4461 bf->bf_last->bf_state.bfs_tx_queue);
4465 if (txq->axq_depth > 0) {
4467 * More frames follow. Mark the buffer busy
4468 * so it's not re-used while the hardware may
4469 * still re-read the link field in the descriptor.
4471 * Use the last buffer in an aggregate as that
4472 * is where the hardware may be - intermediate
4473 * descriptors won't be "busy".
4475 bf->bf_last->bf_flags |= ATH_BUF_BUSY;
4477 txq->axq_link = NULL;
4479 bf->bf_last->bf_flags |= ATH_BUF_BUSY;
4481 if (bf->bf_state.bfs_aggr)
4482 txq->axq_aggr_depth--;
4486 ATH_KTR(sc, ATH_KTR_TXCOMP, 5,
4487 "ath_tx_processq: txq=%u, bf=%p, ds=%p, ni=%p, ts_status=0x%08x",
4488 txq->axq_qnum, bf, ds, ni, ts->ts_status);
4490 * If unicast frame was ack'd update RSSI,
4491 * including the last rx time used to
4492 * workaround phantom bmiss interrupts.
4494 if (ni != NULL && ts->ts_status == 0 &&
4495 ((bf->bf_state.bfs_txflags & HAL_TXDESC_NOACK) == 0)) {
4497 sc->sc_stats.ast_tx_rssi = ts->ts_rssi;
4498 ATH_RSSI_LPF(sc->sc_halstats.ns_avgtxrssi,
4500 ATH_RSSI_LPF(ATH_NODE(ni)->an_node_stats.ns_avgtxrssi,
4503 ATH_TXQ_UNLOCK(txq);
4506 * Update statistics and call completion
4508 ath_tx_process_buf_completion(sc, txq, ts, bf);
4510 /* XXX at this point, bf and ni may be totally invalid */
4512 #ifdef IEEE80211_SUPPORT_SUPERG
4514 * Flush fast-frame staging queue when traffic slows.
4516 if (txq->axq_depth <= 1)
4517 ieee80211_ff_flush(ic, txq->axq_ac);
4520 /* Kick the software TXQ scheduler */
4523 ath_txq_sched(sc, txq);
4527 ATH_KTR(sc, ATH_KTR_TXCOMP, 1,
4528 "ath_tx_processq: txq=%u: done",
4534 #define TXQACTIVE(t, q) ( (t) & (1 << (q)))
4537 * Deferred processing of transmit interrupt; special-cased
4538 * for a single hardware transmit queue (e.g. 5210 and 5211).
4541 ath_tx_proc_q0(void *arg, int npending)
4543 struct ath_softc *sc = arg;
4547 sc->sc_txproc_cnt++;
4548 txqs = sc->sc_txq_active;
4549 sc->sc_txq_active &= ~txqs;
4553 ath_power_set_power_state(sc, HAL_PM_AWAKE);
4556 ATH_KTR(sc, ATH_KTR_TXCOMP, 1,
4557 "ath_tx_proc_q0: txqs=0x%08x", txqs);
4559 if (TXQACTIVE(txqs, 0) && ath_tx_processq(sc, &sc->sc_txq[0], 1))
4560 /* XXX why is lastrx updated in tx code? */
4561 sc->sc_lastrx = ath_hal_gettsf64(sc->sc_ah);
4562 if (TXQACTIVE(txqs, sc->sc_cabq->axq_qnum))
4563 ath_tx_processq(sc, sc->sc_cabq, 1);
4564 sc->sc_wd_timer = 0;
4567 ath_led_event(sc, sc->sc_txrix);
4570 sc->sc_txproc_cnt--;
4574 ath_power_restore_power_state(sc);
4581 * Deferred processing of transmit interrupt; special-cased
4582 * for four hardware queues, 0-3 (e.g. 5212 w/ WME support).
4585 ath_tx_proc_q0123(void *arg, int npending)
4587 struct ath_softc *sc = arg;
4592 sc->sc_txproc_cnt++;
4593 txqs = sc->sc_txq_active;
4594 sc->sc_txq_active &= ~txqs;
4598 ath_power_set_power_state(sc, HAL_PM_AWAKE);
4601 ATH_KTR(sc, ATH_KTR_TXCOMP, 1,
4602 "ath_tx_proc_q0123: txqs=0x%08x", txqs);
4605 * Process each active queue.
4608 if (TXQACTIVE(txqs, 0))
4609 nacked += ath_tx_processq(sc, &sc->sc_txq[0], 1);
4610 if (TXQACTIVE(txqs, 1))
4611 nacked += ath_tx_processq(sc, &sc->sc_txq[1], 1);
4612 if (TXQACTIVE(txqs, 2))
4613 nacked += ath_tx_processq(sc, &sc->sc_txq[2], 1);
4614 if (TXQACTIVE(txqs, 3))
4615 nacked += ath_tx_processq(sc, &sc->sc_txq[3], 1);
4616 if (TXQACTIVE(txqs, sc->sc_cabq->axq_qnum))
4617 ath_tx_processq(sc, sc->sc_cabq, 1);
4619 sc->sc_lastrx = ath_hal_gettsf64(sc->sc_ah);
4621 sc->sc_wd_timer = 0;
4624 ath_led_event(sc, sc->sc_txrix);
4627 sc->sc_txproc_cnt--;
4631 ath_power_restore_power_state(sc);
4638 * Deferred processing of transmit interrupt.
4641 ath_tx_proc(void *arg, int npending)
4643 struct ath_softc *sc = arg;
4648 sc->sc_txproc_cnt++;
4649 txqs = sc->sc_txq_active;
4650 sc->sc_txq_active &= ~txqs;
4654 ath_power_set_power_state(sc, HAL_PM_AWAKE);
4657 ATH_KTR(sc, ATH_KTR_TXCOMP, 1, "ath_tx_proc: txqs=0x%08x", txqs);
4660 * Process each active queue.
4663 for (i = 0; i < HAL_NUM_TX_QUEUES; i++)
4664 if (ATH_TXQ_SETUP(sc, i) && TXQACTIVE(txqs, i))
4665 nacked += ath_tx_processq(sc, &sc->sc_txq[i], 1);
4667 sc->sc_lastrx = ath_hal_gettsf64(sc->sc_ah);
4669 sc->sc_wd_timer = 0;
4672 ath_led_event(sc, sc->sc_txrix);
4675 sc->sc_txproc_cnt--;
4679 ath_power_restore_power_state(sc);
4687 * Deferred processing of TXQ rescheduling.
4690 ath_txq_sched_tasklet(void *arg, int npending)
4692 struct ath_softc *sc = arg;
4695 /* XXX is skipping ok? */
4698 if (sc->sc_inreset_cnt > 0) {
4699 device_printf(sc->sc_dev,
4700 "%s: sc_inreset_cnt > 0; skipping\n", __func__);
4705 sc->sc_txproc_cnt++;
4709 ath_power_set_power_state(sc, HAL_PM_AWAKE);
4713 for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
4714 if (ATH_TXQ_SETUP(sc, i)) {
4715 ath_txq_sched(sc, &sc->sc_txq[i]);
4721 ath_power_restore_power_state(sc);
4725 sc->sc_txproc_cnt--;
4730 ath_returnbuf_tail(struct ath_softc *sc, struct ath_buf *bf)
4733 ATH_TXBUF_LOCK_ASSERT(sc);
4735 if (bf->bf_flags & ATH_BUF_MGMT)
4736 TAILQ_INSERT_TAIL(&sc->sc_txbuf_mgmt, bf, bf_list);
4738 TAILQ_INSERT_TAIL(&sc->sc_txbuf, bf, bf_list);
4740 if (sc->sc_txbuf_cnt > ath_txbuf) {
4741 device_printf(sc->sc_dev,
4742 "%s: sc_txbuf_cnt > %d?\n",
4745 sc->sc_txbuf_cnt = ath_txbuf;
4751 ath_returnbuf_head(struct ath_softc *sc, struct ath_buf *bf)
4754 ATH_TXBUF_LOCK_ASSERT(sc);
4756 if (bf->bf_flags & ATH_BUF_MGMT)
4757 TAILQ_INSERT_HEAD(&sc->sc_txbuf_mgmt, bf, bf_list);
4759 TAILQ_INSERT_HEAD(&sc->sc_txbuf, bf, bf_list);
4761 if (sc->sc_txbuf_cnt > ATH_TXBUF) {
4762 device_printf(sc->sc_dev,
4763 "%s: sc_txbuf_cnt > %d?\n",
4766 sc->sc_txbuf_cnt = ATH_TXBUF;
4772 * Free the holding buffer if it exists
4775 ath_txq_freeholdingbuf(struct ath_softc *sc, struct ath_txq *txq)
4777 ATH_TXBUF_UNLOCK_ASSERT(sc);
4778 ATH_TXQ_LOCK_ASSERT(txq);
4780 if (txq->axq_holdingbf == NULL)
4783 txq->axq_holdingbf->bf_flags &= ~ATH_BUF_BUSY;
4786 ath_returnbuf_tail(sc, txq->axq_holdingbf);
4787 ATH_TXBUF_UNLOCK(sc);
4789 txq->axq_holdingbf = NULL;
4793 * Add this buffer to the holding queue, freeing the previous
4797 ath_txq_addholdingbuf(struct ath_softc *sc, struct ath_buf *bf)
4799 struct ath_txq *txq;
4801 txq = &sc->sc_txq[bf->bf_state.bfs_tx_queue];
4803 ATH_TXBUF_UNLOCK_ASSERT(sc);
4804 ATH_TXQ_LOCK_ASSERT(txq);
4806 /* XXX assert ATH_BUF_BUSY is set */
4808 /* XXX assert the tx queue is under the max number */
4809 if (bf->bf_state.bfs_tx_queue > HAL_NUM_TX_QUEUES) {
4810 device_printf(sc->sc_dev, "%s: bf=%p: invalid tx queue (%d)\n",
4813 bf->bf_state.bfs_tx_queue);
4814 bf->bf_flags &= ~ATH_BUF_BUSY;
4815 ath_returnbuf_tail(sc, bf);
4818 ath_txq_freeholdingbuf(sc, txq);
4819 txq->axq_holdingbf = bf;
4823 * Return a buffer to the pool and update the 'busy' flag on the
4824 * previous 'tail' entry.
4826 * This _must_ only be called when the buffer is involved in a completed
4827 * TX. The logic is that if it was part of an active TX, the previous
4828 * buffer on the list is now not involved in a halted TX DMA queue, waiting
4829 * for restart (eg for TDMA.)
4831 * The caller must free the mbuf and recycle the node reference.
4833 * XXX This method of handling busy / holding buffers is insanely stupid.
4834 * It requires bf_state.bfs_tx_queue to be correctly assigned. It would
4835 * be much nicer if buffers in the processq() methods would instead be
4836 * always completed there (pushed onto a txq or ath_bufhead) so we knew
4837 * exactly what hardware queue they came from in the first place.
4840 ath_freebuf(struct ath_softc *sc, struct ath_buf *bf)
4842 struct ath_txq *txq;
4844 txq = &sc->sc_txq[bf->bf_state.bfs_tx_queue];
4846 KASSERT((bf->bf_node == NULL), ("%s: bf->bf_node != NULL\n", __func__));
4847 KASSERT((bf->bf_m == NULL), ("%s: bf->bf_m != NULL\n", __func__));
4850 * If this buffer is busy, push it onto the holding queue.
4852 if (bf->bf_flags & ATH_BUF_BUSY) {
4854 ath_txq_addholdingbuf(sc, bf);
4855 ATH_TXQ_UNLOCK(txq);
4860 * Not a busy buffer, so free normally
4863 ath_returnbuf_tail(sc, bf);
4864 ATH_TXBUF_UNLOCK(sc);
4868 * This is currently used by ath_tx_draintxq() and
4869 * ath_tx_tid_free_pkts().
4871 * It recycles a single ath_buf.
4874 ath_tx_freebuf(struct ath_softc *sc, struct ath_buf *bf, int status)
4876 struct ieee80211_node *ni = bf->bf_node;
4877 struct mbuf *m0 = bf->bf_m;
4880 * Make sure that we only sync/unload if there's an mbuf.
4881 * If not (eg we cloned a buffer), the unload will have already
4884 if (bf->bf_m != NULL) {
4885 bus_dmamap_sync(sc->sc_dmat, bf->bf_dmamap,
4886 BUS_DMASYNC_POSTWRITE);
4887 bus_dmamap_unload(sc->sc_dmat, bf->bf_dmamap);
4893 /* Free the buffer, it's not needed any longer */
4894 ath_freebuf(sc, bf);
4896 /* Pass the buffer back to net80211 - completing it */
4897 ieee80211_tx_complete(ni, m0, status);
4900 static struct ath_buf *
4901 ath_tx_draintxq_get_one(struct ath_softc *sc, struct ath_txq *txq)
4905 ATH_TXQ_LOCK_ASSERT(txq);
4908 * Drain the FIFO queue first, then if it's
4909 * empty, move to the normal frame queue.
4911 bf = TAILQ_FIRST(&txq->fifo.axq_q);
4914 * Is it the last buffer in this set?
4915 * Decrement the FIFO counter.
4917 if (bf->bf_flags & ATH_BUF_FIFOEND) {
4918 if (txq->axq_fifo_depth == 0) {
4919 device_printf(sc->sc_dev,
4920 "%s: Q%d: fifo_depth=0, fifo.axq_depth=%d?\n",
4923 txq->fifo.axq_depth);
4925 txq->axq_fifo_depth--;
4927 ATH_TXQ_REMOVE(&txq->fifo, bf, bf_list);
4934 if (txq->axq_fifo_depth != 0 || txq->fifo.axq_depth != 0) {
4935 device_printf(sc->sc_dev,
4936 "%s: Q%d: fifo_depth=%d, fifo.axq_depth=%d\n",
4939 txq->axq_fifo_depth,
4940 txq->fifo.axq_depth);
4944 * Now drain the pending queue.
4946 bf = TAILQ_FIRST(&txq->axq_q);
4948 txq->axq_link = NULL;
4951 ATH_TXQ_REMOVE(txq, bf, bf_list);
4956 ath_tx_draintxq(struct ath_softc *sc, struct ath_txq *txq)
4959 struct ath_hal *ah = sc->sc_ah;
4965 * NB: this assumes output has been stopped and
4966 * we do not need to block ath_tx_proc
4968 for (ix = 0;; ix++) {
4970 bf = ath_tx_draintxq_get_one(sc, txq);
4972 ATH_TXQ_UNLOCK(txq);
4975 if (bf->bf_state.bfs_aggr)
4976 txq->axq_aggr_depth--;
4978 if (sc->sc_debug & ATH_DEBUG_RESET) {
4979 struct ieee80211com *ic = &sc->sc_ic;
4983 * EDMA operation has a TX completion FIFO
4984 * separate from the TX descriptor, so this
4985 * method of checking the "completion" status
4988 if (! sc->sc_isedma) {
4989 status = (ath_hal_txprocdesc(ah,
4991 &bf->bf_status.ds_txstat) == HAL_OK);
4993 ath_printtxbuf(sc, bf, txq->axq_qnum, ix, status);
4994 ieee80211_dump_pkt(ic, mtod(bf->bf_m, const uint8_t *),
4995 bf->bf_m->m_len, 0, -1);
4997 #endif /* ATH_DEBUG */
4999 * Since we're now doing magic in the completion
5000 * functions, we -must- call it for aggregation
5001 * destinations or BAW tracking will get upset.
5004 * Clear ATH_BUF_BUSY; the completion handler
5005 * will free the buffer.
5007 ATH_TXQ_UNLOCK(txq);
5008 bf->bf_flags &= ~ATH_BUF_BUSY;
5010 bf->bf_comp(sc, bf, 1);
5012 ath_tx_default_comp(sc, bf, 1);
5016 * Free the holding buffer if it exists
5019 ath_txq_freeholdingbuf(sc, txq);
5020 ATH_TXQ_UNLOCK(txq);
5023 * Drain software queued frames which are on
5026 ath_tx_txq_drain(sc, txq);
5030 ath_tx_stopdma(struct ath_softc *sc, struct ath_txq *txq)
5032 struct ath_hal *ah = sc->sc_ah;
5034 ATH_TXQ_LOCK_ASSERT(txq);
5036 DPRINTF(sc, ATH_DEBUG_RESET,
5037 "%s: tx queue [%u] %p, active=%d, hwpending=%d, flags 0x%08x, "
5038 "link %p, holdingbf=%p\n",
5041 (caddr_t)(uintptr_t) ath_hal_gettxbuf(ah, txq->axq_qnum),
5042 (int) (!! ath_hal_txqenabled(ah, txq->axq_qnum)),
5043 (int) ath_hal_numtxpending(ah, txq->axq_qnum),
5046 txq->axq_holdingbf);
5048 (void) ath_hal_stoptxdma(ah, txq->axq_qnum);
5049 /* We've stopped TX DMA, so mark this as stopped. */
5050 txq->axq_flags &= ~ATH_TXQ_PUTRUNNING;
5053 if ((sc->sc_debug & ATH_DEBUG_RESET)
5054 && (txq->axq_holdingbf != NULL)) {
5055 ath_printtxbuf(sc, txq->axq_holdingbf, txq->axq_qnum, 0, 0);
5061 ath_stoptxdma(struct ath_softc *sc)
5063 struct ath_hal *ah = sc->sc_ah;
5066 /* XXX return value */
5070 if (!sc->sc_invalid) {
5071 /* don't touch the hardware if marked invalid */
5072 DPRINTF(sc, ATH_DEBUG_RESET, "%s: tx queue [%u] %p, link %p\n",
5073 __func__, sc->sc_bhalq,
5074 (caddr_t)(uintptr_t) ath_hal_gettxbuf(ah, sc->sc_bhalq),
5077 /* stop the beacon queue */
5078 (void) ath_hal_stoptxdma(ah, sc->sc_bhalq);
5080 /* Stop the data queues */
5081 for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
5082 if (ATH_TXQ_SETUP(sc, i)) {
5083 ATH_TXQ_LOCK(&sc->sc_txq[i]);
5084 ath_tx_stopdma(sc, &sc->sc_txq[i]);
5085 ATH_TXQ_UNLOCK(&sc->sc_txq[i]);
5095 ath_tx_dump(struct ath_softc *sc, struct ath_txq *txq)
5097 struct ath_hal *ah = sc->sc_ah;
5101 if (! (sc->sc_debug & ATH_DEBUG_RESET))
5104 device_printf(sc->sc_dev, "%s: Q%d: begin\n",
5105 __func__, txq->axq_qnum);
5106 TAILQ_FOREACH(bf, &txq->axq_q, bf_list) {
5107 ath_printtxbuf(sc, bf, txq->axq_qnum, i,
5108 ath_hal_txprocdesc(ah, bf->bf_lastds,
5109 &bf->bf_status.ds_txstat) == HAL_OK);
5112 device_printf(sc->sc_dev, "%s: Q%d: end\n",
5113 __func__, txq->axq_qnum);
5115 #endif /* ATH_DEBUG */
5118 * Drain the transmit queues and reclaim resources.
5121 ath_legacy_tx_drain(struct ath_softc *sc, ATH_RESET_TYPE reset_type)
5123 struct ath_hal *ah = sc->sc_ah;
5124 struct ath_buf *bf_last;
5127 (void) ath_stoptxdma(sc);
5130 * Dump the queue contents
5132 for (i = 0; i < HAL_NUM_TX_QUEUES; i++) {
5134 * XXX TODO: should we just handle the completed TX frames
5135 * here, whether or not the reset is a full one or not?
5137 if (ATH_TXQ_SETUP(sc, i)) {
5139 if (sc->sc_debug & ATH_DEBUG_RESET)
5140 ath_tx_dump(sc, &sc->sc_txq[i]);
5141 #endif /* ATH_DEBUG */
5142 if (reset_type == ATH_RESET_NOLOSS) {
5143 ath_tx_processq(sc, &sc->sc_txq[i], 0);
5144 ATH_TXQ_LOCK(&sc->sc_txq[i]);
5146 * Free the holding buffer; DMA is now
5149 ath_txq_freeholdingbuf(sc, &sc->sc_txq[i]);
5151 * Setup the link pointer to be the
5152 * _last_ buffer/descriptor in the list.
5153 * If there's nothing in the list, set it
5156 bf_last = ATH_TXQ_LAST(&sc->sc_txq[i],
5158 if (bf_last != NULL) {
5159 ath_hal_gettxdesclinkptr(ah,
5161 &sc->sc_txq[i].axq_link);
5163 sc->sc_txq[i].axq_link = NULL;
5165 ATH_TXQ_UNLOCK(&sc->sc_txq[i]);
5167 ath_tx_draintxq(sc, &sc->sc_txq[i]);
5171 if (sc->sc_debug & ATH_DEBUG_RESET) {
5172 struct ath_buf *bf = TAILQ_FIRST(&sc->sc_bbuf);
5173 if (bf != NULL && bf->bf_m != NULL) {
5174 ath_printtxbuf(sc, bf, sc->sc_bhalq, 0,
5175 ath_hal_txprocdesc(ah, bf->bf_lastds,
5176 &bf->bf_status.ds_txstat) == HAL_OK);
5177 ieee80211_dump_pkt(&sc->sc_ic,
5178 mtod(bf->bf_m, const uint8_t *), bf->bf_m->m_len,
5182 #endif /* ATH_DEBUG */
5183 sc->sc_wd_timer = 0;
5187 * Update internal state after a channel change.
5190 ath_chan_change(struct ath_softc *sc, struct ieee80211_channel *chan)
5192 enum ieee80211_phymode mode;
5195 * Change channels and update the h/w rate map
5196 * if we're switching; e.g. 11a to 11b/g.
5198 mode = ieee80211_chan2mode(chan);
5199 if (mode != sc->sc_curmode)
5200 ath_setcurmode(sc, mode);
5201 sc->sc_curchan = chan;
5205 * Set/change channels. If the channel is really being changed,
5206 * it's done by resetting the chip. To accomplish this we must
5207 * first cleanup any pending DMA, then restart stuff after a la
5211 ath_chan_set(struct ath_softc *sc, struct ieee80211_channel *chan)
5213 struct ieee80211com *ic = &sc->sc_ic;
5214 struct ath_hal *ah = sc->sc_ah;
5217 /* Treat this as an interface reset */
5218 ATH_PCU_UNLOCK_ASSERT(sc);
5219 ATH_UNLOCK_ASSERT(sc);
5221 /* (Try to) stop TX/RX from occurring */
5222 taskqueue_block(sc->sc_tq);
5226 /* Disable interrupts */
5227 ath_hal_intrset(ah, 0);
5229 /* Stop new RX/TX/interrupt completion */
5230 if (ath_reset_grablock(sc, 1) == 0) {
5231 device_printf(sc->sc_dev, "%s: concurrent reset! Danger!\n",
5235 /* Stop pending RX/TX completion */
5236 ath_txrx_stop_locked(sc);
5240 DPRINTF(sc, ATH_DEBUG_RESET, "%s: %u (%u MHz, flags 0x%x)\n",
5241 __func__, ieee80211_chan2ieee(ic, chan),
5242 chan->ic_freq, chan->ic_flags);
5243 if (chan != sc->sc_curchan) {
5246 * To switch channels clear any pending DMA operations;
5247 * wait long enough for the RX fifo to drain, reset the
5248 * hardware at the new frequency, and then re-enable
5249 * the relevant bits of the h/w.
5252 ath_hal_intrset(ah, 0); /* disable interrupts */
5254 ath_stoprecv(sc, 1); /* turn off frame recv */
5256 * First, handle completed TX/RX frames.
5259 ath_draintxq(sc, ATH_RESET_NOLOSS);
5261 * Next, flush the non-scheduled frames.
5263 ath_draintxq(sc, ATH_RESET_FULL); /* clear pending tx frames */
5265 ath_update_chainmasks(sc, chan);
5266 ath_hal_setchainmasks(sc->sc_ah, sc->sc_cur_txchainmask,
5267 sc->sc_cur_rxchainmask);
5268 if (!ath_hal_reset(ah, sc->sc_opmode, chan, AH_TRUE,
5269 HAL_RESET_NORMAL, &status)) {
5270 device_printf(sc->sc_dev, "%s: unable to reset "
5271 "channel %u (%u MHz, flags 0x%x), hal status %u\n",
5272 __func__, ieee80211_chan2ieee(ic, chan),
5273 chan->ic_freq, chan->ic_flags, status);
5277 sc->sc_diversity = ath_hal_getdiversity(ah);
5280 sc->sc_rx_stopped = 1;
5281 sc->sc_rx_resetted = 1;
5284 /* Quiet time handling - ensure we resync */
5285 ath_vap_clear_quiet_ie(sc);
5287 /* Let DFS at it in case it's a DFS channel */
5288 ath_dfs_radar_enable(sc, chan);
5290 /* Let spectral at in case spectral is enabled */
5291 ath_spectral_enable(sc, chan);
5294 * Let bluetooth coexistence at in case it's needed for this
5297 ath_btcoex_enable(sc, ic->ic_curchan);
5300 * If we're doing TDMA, enforce the TXOP limitation for chips
5303 if (sc->sc_hasenforcetxop && sc->sc_tdma)
5304 ath_hal_setenforcetxop(sc->sc_ah, 1);
5306 ath_hal_setenforcetxop(sc->sc_ah, 0);
5309 * Re-enable rx framework.
5311 if (ath_startrecv(sc) != 0) {
5312 device_printf(sc->sc_dev,
5313 "%s: unable to restart recv logic\n", __func__);
5319 * Change channels and update the h/w rate map
5320 * if we're switching; e.g. 11a to 11b/g.
5322 ath_chan_change(sc, chan);
5325 * Reset clears the beacon timers; reset them
5328 if (sc->sc_beacons) { /* restart beacons */
5329 #ifdef IEEE80211_SUPPORT_TDMA
5331 ath_tdma_config(sc, NULL);
5334 ath_beacon_config(sc, NULL);
5338 * Re-enable interrupts.
5341 ath_hal_intrset(ah, sc->sc_imask);
5347 sc->sc_inreset_cnt--;
5348 /* XXX only do this if sc_inreset_cnt == 0? */
5349 ath_hal_intrset(ah, sc->sc_imask);
5353 /* XXX ath_start? */
5359 * Periodically recalibrate the PHY to account
5360 * for temperature/environment changes.
5363 ath_calibrate(void *arg)
5365 struct ath_softc *sc = arg;
5366 struct ath_hal *ah = sc->sc_ah;
5367 struct ieee80211com *ic = &sc->sc_ic;
5368 HAL_BOOL longCal, isCalDone = AH_TRUE;
5369 HAL_BOOL aniCal, shortCal = AH_FALSE;
5372 ATH_LOCK_ASSERT(sc);
5375 * Force the hardware awake for ANI work.
5377 ath_power_set_power_state(sc, HAL_PM_AWAKE);
5379 /* Skip trying to do this if we're in reset */
5380 if (sc->sc_inreset_cnt)
5383 if (ic->ic_flags & IEEE80211_F_SCAN) /* defer, off channel */
5385 longCal = (ticks - sc->sc_lastlongcal >= ath_longcalinterval*hz);
5386 aniCal = (ticks - sc->sc_lastani >= ath_anicalinterval*hz/1000);
5387 if (sc->sc_doresetcal)
5388 shortCal = (ticks - sc->sc_lastshortcal >= ath_shortcalinterval*hz/1000);
5390 DPRINTF(sc, ATH_DEBUG_CALIBRATE, "%s: shortCal=%d; longCal=%d; aniCal=%d\n", __func__, shortCal, longCal, aniCal);
5392 sc->sc_stats.ast_ani_cal++;
5393 sc->sc_lastani = ticks;
5394 ath_hal_ani_poll(ah, sc->sc_curchan);
5398 sc->sc_stats.ast_per_cal++;
5399 sc->sc_lastlongcal = ticks;
5400 if (ath_hal_getrfgain(ah) == HAL_RFGAIN_NEED_CHANGE) {
5402 * Rfgain is out of bounds, reset the chip
5403 * to load new gain values.
5405 DPRINTF(sc, ATH_DEBUG_CALIBRATE,
5406 "%s: rfgain change\n", __func__);
5407 sc->sc_stats.ast_per_rfgain++;
5408 sc->sc_resetcal = 0;
5409 sc->sc_doresetcal = AH_TRUE;
5410 taskqueue_enqueue(sc->sc_tq, &sc->sc_resettask);
5411 callout_reset(&sc->sc_cal_ch, 1, ath_calibrate, sc);
5412 ath_power_restore_power_state(sc);
5416 * If this long cal is after an idle period, then
5417 * reset the data collection state so we start fresh.
5419 if (sc->sc_resetcal) {
5420 (void) ath_hal_calreset(ah, sc->sc_curchan);
5421 sc->sc_lastcalreset = ticks;
5422 sc->sc_lastshortcal = ticks;
5423 sc->sc_resetcal = 0;
5424 sc->sc_doresetcal = AH_TRUE;
5428 /* Only call if we're doing a short/long cal, not for ANI calibration */
5429 if (shortCal || longCal) {
5430 isCalDone = AH_FALSE;
5431 if (ath_hal_calibrateN(ah, sc->sc_curchan, longCal, &isCalDone)) {
5434 * Calibrate noise floor data again in case of change.
5436 ath_hal_process_noisefloor(ah);
5439 DPRINTF(sc, ATH_DEBUG_ANY,
5440 "%s: calibration of channel %u failed\n",
5441 __func__, sc->sc_curchan->ic_freq);
5442 sc->sc_stats.ast_per_calfail++;
5445 * XXX TODO: get the NF calibration results from the HAL.
5446 * If we failed NF cal then schedule a hard reset to potentially
5447 * un-freeze the PHY.
5449 * Note we have to be careful here to not get stuck in an
5450 * infinite NIC restart. Ideally we'd not restart if we
5451 * failed the first NF cal - that /can/ fail sometimes in
5452 * a noisy environment.
5455 sc->sc_lastshortcal = ticks;
5460 * Use a shorter interval to potentially collect multiple
5461 * data samples required to complete calibration. Once
5462 * we're told the work is done we drop back to a longer
5463 * interval between requests. We're more aggressive doing
5464 * work when operating as an AP to improve operation right
5467 sc->sc_lastshortcal = ticks;
5468 nextcal = ath_shortcalinterval*hz/1000;
5469 if (sc->sc_opmode != HAL_M_HOSTAP)
5471 sc->sc_doresetcal = AH_TRUE;
5473 /* nextcal should be the shortest time for next event */
5474 nextcal = ath_longcalinterval*hz;
5475 if (sc->sc_lastcalreset == 0)
5476 sc->sc_lastcalreset = sc->sc_lastlongcal;
5477 else if (ticks - sc->sc_lastcalreset >= ath_resetcalinterval*hz)
5478 sc->sc_resetcal = 1; /* setup reset next trip */
5479 sc->sc_doresetcal = AH_FALSE;
5481 /* ANI calibration may occur more often than short/long/resetcal */
5482 if (ath_anicalinterval > 0)
5483 nextcal = MIN(nextcal, ath_anicalinterval*hz/1000);
5486 DPRINTF(sc, ATH_DEBUG_CALIBRATE, "%s: next +%u (%sisCalDone)\n",
5487 __func__, nextcal, isCalDone ? "" : "!");
5488 callout_reset(&sc->sc_cal_ch, nextcal, ath_calibrate, sc);
5490 DPRINTF(sc, ATH_DEBUG_CALIBRATE, "%s: calibration disabled\n",
5492 /* NB: don't rearm timer */
5495 * Restore power state now that we're done.
5497 ath_power_restore_power_state(sc);
5501 ath_scan_start(struct ieee80211com *ic)
5503 struct ath_softc *sc = ic->ic_softc;
5504 struct ath_hal *ah = sc->sc_ah;
5507 /* XXX calibration timer? */
5508 /* XXXGL: is constant ieee80211broadcastaddr a correct choice? */
5511 sc->sc_scanning = 1;
5512 sc->sc_syncbeacon = 0;
5513 rfilt = ath_calcrxfilter(sc);
5517 ath_hal_setrxfilter(ah, rfilt);
5518 ath_hal_setassocid(ah, ieee80211broadcastaddr, 0);
5521 DPRINTF(sc, ATH_DEBUG_STATE, "%s: RX filter 0x%x bssid %s aid 0\n",
5522 __func__, rfilt, ether_sprintf(ieee80211broadcastaddr));
5526 ath_scan_end(struct ieee80211com *ic)
5528 struct ath_softc *sc = ic->ic_softc;
5529 struct ath_hal *ah = sc->sc_ah;
5533 sc->sc_scanning = 0;
5534 rfilt = ath_calcrxfilter(sc);
5538 ath_hal_setrxfilter(ah, rfilt);
5539 ath_hal_setassocid(ah, sc->sc_curbssid, sc->sc_curaid);
5541 ath_hal_process_noisefloor(ah);
5544 DPRINTF(sc, ATH_DEBUG_STATE, "%s: RX filter 0x%x bssid %s aid 0x%x\n",
5545 __func__, rfilt, ether_sprintf(sc->sc_curbssid),
5549 #ifdef ATH_ENABLE_11N
5551 * For now, just do a channel change.
5553 * Later, we'll go through the hard slog of suspending tx/rx, changing rate
5554 * control state and resetting the hardware without dropping frames out
5557 * The unfortunate trouble here is making absolutely sure that the
5558 * channel width change has propagated enough so the hardware
5559 * absolutely isn't handed bogus frames for it's current operating
5560 * mode. (Eg, 40MHz frames in 20MHz mode.) Since TX and RX can and
5561 * does occur in parallel, we need to make certain we've blocked
5562 * any further ongoing TX (and RX, that can cause raw TX)
5563 * before we do this.
5566 ath_update_chw(struct ieee80211com *ic)
5568 struct ath_softc *sc = ic->ic_softc;
5570 //DPRINTF(sc, ATH_DEBUG_STATE, "%s: called\n", __func__);
5571 device_printf(sc->sc_dev, "%s: called\n", __func__);
5574 * XXX TODO: schedule a tasklet that stops things without freeing,
5575 * walks the now stopped TX queue(s) looking for frames to retry
5576 * as if we TX filtered them (whch may mean dropping non-ampdu frames!)
5577 * but okay) then place them back on the software queue so they
5578 * can have the rate control lookup done again.
5580 ath_set_channel(ic);
5582 #endif /* ATH_ENABLE_11N */
5585 * This is called by the beacon parsing routine in the receive
5586 * path to update the current quiet time information provided by
5589 * This is STA specific, it doesn't take the AP TBTT/beacon slot
5590 * offset into account.
5592 * The quiet IE doesn't control the /now/ beacon interval - it
5593 * controls the upcoming beacon interval. So, when tbtt=1,
5594 * the quiet element programming shall be for the next beacon
5595 * interval. There's no tbtt=0 behaviour defined, so don't.
5597 * Since we're programming the next quiet interval, we have
5598 * to keep in mind what we will see when the next beacon
5599 * is received with potentially a quiet IE. For example, if
5600 * quiet_period is 1, then we are always getting a quiet interval
5601 * each TBTT - so if we just program it in upon each beacon received,
5602 * it will constantly reflect the "next" TBTT and we will never
5603 * let the counter stay programmed correctly.
5606 * + the first time we see the quiet IE, program it and store
5607 * the details somewhere;
5608 * + if the quiet parameters don't change (ie, period/duration/offset)
5609 * then just leave the programming enabled;
5610 * + (we can "skip" beacons, so don't try to enforce tbttcount unless
5611 * you're willing to also do the skipped beacon math);
5612 * + if the quiet IE is removed, then halt quiet time.
5615 ath_set_quiet_ie(struct ieee80211_node *ni, uint8_t *ie)
5617 struct ieee80211_quiet_ie *q;
5618 struct ieee80211vap *vap = ni->ni_vap;
5619 struct ath_vap *avp = ATH_VAP(vap);
5620 struct ieee80211com *ic = vap->iv_ic;
5621 struct ath_softc *sc = ic->ic_softc;
5623 if (vap->iv_opmode != IEEE80211_M_STA)
5626 /* Verify we have a quiet time IE */
5628 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5629 "%s: called; NULL IE, disabling\n", __func__);
5631 ath_hal_set_quiet(sc->sc_ah, 0, 0, 0, HAL_QUIET_DISABLE);
5632 memset(&avp->quiet_ie, 0, sizeof(avp->quiet_ie));
5636 /* If we do, verify it's actually legit */
5637 if (ie[0] != IEEE80211_ELEMID_QUIET)
5642 /* Note: this belongs in net80211, parsed out and everything */
5646 * Compare what we have stored to what we last saw.
5647 * If they're the same then don't program in anything.
5649 if ((q->period == avp->quiet_ie.period) &&
5650 (le16dec(&q->duration) == le16dec(&avp->quiet_ie.duration)) &&
5651 (le16dec(&q->offset) == le16dec(&avp->quiet_ie.offset)))
5654 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5655 "%s: called; tbttcount=%d, period=%d, duration=%d, offset=%d\n",
5659 (int) le16dec(&q->duration),
5660 (int) le16dec(&q->offset));
5663 * Don't program in garbage values.
5665 if ((le16dec(&q->duration) == 0) ||
5666 (le16dec(&q->duration) >= ni->ni_intval)) {
5667 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5668 "%s: invalid duration (%d)\n", __func__,
5669 le16dec(&q->duration));
5673 * Can have a 0 offset, but not a duration - so just check
5674 * they don't exceed the intval.
5676 if (le16dec(&q->duration) + le16dec(&q->offset) >= ni->ni_intval) {
5677 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5678 "%s: invalid duration + offset (%d+%d)\n", __func__,
5679 le16dec(&q->duration),
5680 le16dec(&q->offset));
5683 if (q->tbttcount == 0) {
5684 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5685 "%s: invalid tbttcount (0)\n", __func__);
5688 if (q->period == 0) {
5689 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5690 "%s: invalid period (0)\n", __func__);
5695 * This is a new quiet time IE config, so wait until tbttcount
5696 * is equal to 1, and program it in.
5698 if (q->tbttcount == 1) {
5699 DPRINTF(sc, ATH_DEBUG_QUIETIE,
5700 "%s: programming\n", __func__);
5701 ath_hal_set_quiet(sc->sc_ah,
5702 q->period * ni->ni_intval, /* convert to TU */
5703 le16dec(&q->duration), /* already in TU */
5704 le16dec(&q->offset) + ni->ni_intval,
5705 HAL_QUIET_ENABLE | HAL_QUIET_ADD_CURRENT_TSF);
5707 * Note: no HAL_QUIET_ADD_SWBA_RESP_TIME; as this is for
5711 /* Update local state */
5712 memcpy(&avp->quiet_ie, ie, sizeof(struct ieee80211_quiet_ie));
5719 ath_set_channel(struct ieee80211com *ic)
5721 struct ath_softc *sc = ic->ic_softc;
5724 ath_power_set_power_state(sc, HAL_PM_AWAKE);
5727 (void) ath_chan_set(sc, ic->ic_curchan);
5729 * If we are returning to our bss channel then mark state
5730 * so the next recv'd beacon's tsf will be used to sync the
5731 * beacon timers. Note that since we only hear beacons in
5732 * sta/ibss mode this has no effect in other operating modes.
5735 if (!sc->sc_scanning && ic->ic_curchan == ic->ic_bsschan)
5736 sc->sc_syncbeacon = 1;
5737 ath_power_restore_power_state(sc);
5742 * Walk the vap list and check if there any vap's in RUN state.
5745 ath_isanyrunningvaps(struct ieee80211vap *this)
5747 struct ieee80211com *ic = this->iv_ic;
5748 struct ieee80211vap *vap;
5750 IEEE80211_LOCK_ASSERT(ic);
5752 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
5753 if (vap != this && vap->iv_state >= IEEE80211_S_RUN)
5760 ath_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
5762 struct ieee80211com *ic = vap->iv_ic;
5763 struct ath_softc *sc = ic->ic_softc;
5764 struct ath_vap *avp = ATH_VAP(vap);
5765 struct ath_hal *ah = sc->sc_ah;
5766 struct ieee80211_node *ni = NULL;
5767 int i, error, stamode;
5769 int csa_run_transition = 0;
5770 enum ieee80211_state ostate = vap->iv_state;
5772 static const HAL_LED_STATE leds[] = {
5773 HAL_LED_INIT, /* IEEE80211_S_INIT */
5774 HAL_LED_SCAN, /* IEEE80211_S_SCAN */
5775 HAL_LED_AUTH, /* IEEE80211_S_AUTH */
5776 HAL_LED_ASSOC, /* IEEE80211_S_ASSOC */
5777 HAL_LED_RUN, /* IEEE80211_S_CAC */
5778 HAL_LED_RUN, /* IEEE80211_S_RUN */
5779 HAL_LED_RUN, /* IEEE80211_S_CSA */
5780 HAL_LED_RUN, /* IEEE80211_S_SLEEP */
5783 DPRINTF(sc, ATH_DEBUG_STATE, "%s: %s -> %s\n", __func__,
5784 ieee80211_state_name[ostate],
5785 ieee80211_state_name[nstate]);
5788 * net80211 _should_ have the comlock asserted at this point.
5789 * There are some comments around the calls to vap->iv_newstate
5790 * which indicate that it (newstate) may end up dropping the
5791 * lock. This and the subsequent lock assert check after newstate
5792 * are an attempt to catch these and figure out how/why.
5794 IEEE80211_LOCK_ASSERT(ic);
5796 /* Before we touch the hardware - wake it up */
5799 * If the NIC is in anything other than SLEEP state,
5800 * we need to ensure that self-generated frames are
5801 * set for PWRMGT=0. Otherwise we may end up with
5802 * strange situations.
5804 * XXX TODO: is this actually the case? :-)
5806 if (nstate != IEEE80211_S_SLEEP)
5807 ath_power_setselfgen(sc, HAL_PM_AWAKE);
5810 * Now, wake the thing up.
5812 ath_power_set_power_state(sc, HAL_PM_AWAKE);
5815 * And stop the calibration callout whilst we have
5818 callout_stop(&sc->sc_cal_ch);
5821 if (ostate == IEEE80211_S_CSA && nstate == IEEE80211_S_RUN)
5822 csa_run_transition = 1;
5824 ath_hal_setledstate(ah, leds[nstate]); /* set LED */
5826 if (nstate == IEEE80211_S_SCAN) {
5828 * Scanning: turn off beacon miss and don't beacon.
5829 * Mark beacon state so when we reach RUN state we'll
5830 * [re]setup beacons. Unblock the task q thread so
5831 * deferred interrupt processing is done.
5834 /* Ensure we stay awake during scan */
5836 ath_power_setselfgen(sc, HAL_PM_AWAKE);
5837 ath_power_setpower(sc, HAL_PM_AWAKE, 1);
5841 sc->sc_imask &~ (HAL_INT_SWBA | HAL_INT_BMISS));
5842 sc->sc_imask &= ~(HAL_INT_SWBA | HAL_INT_BMISS);
5844 taskqueue_unblock(sc->sc_tq);
5847 ni = ieee80211_ref_node(vap->iv_bss);
5848 rfilt = ath_calcrxfilter(sc);
5849 stamode = (vap->iv_opmode == IEEE80211_M_STA ||
5850 vap->iv_opmode == IEEE80211_M_AHDEMO ||
5851 vap->iv_opmode == IEEE80211_M_IBSS);
5854 * XXX Dont need to do this (and others) if we've transitioned
5857 if (stamode && nstate == IEEE80211_S_RUN) {
5858 sc->sc_curaid = ni->ni_associd;
5859 IEEE80211_ADDR_COPY(sc->sc_curbssid, ni->ni_bssid);
5860 ath_hal_setassocid(ah, sc->sc_curbssid, sc->sc_curaid);
5862 DPRINTF(sc, ATH_DEBUG_STATE, "%s: RX filter 0x%x bssid %s aid 0x%x\n",
5863 __func__, rfilt, ether_sprintf(sc->sc_curbssid), sc->sc_curaid);
5864 ath_hal_setrxfilter(ah, rfilt);
5866 /* XXX is this to restore keycache on resume? */
5867 if (vap->iv_opmode != IEEE80211_M_STA &&
5868 (vap->iv_flags & IEEE80211_F_PRIVACY)) {
5869 for (i = 0; i < IEEE80211_WEP_NKID; i++)
5870 if (ath_hal_keyisvalid(ah, i))
5871 ath_hal_keysetmac(ah, i, ni->ni_bssid);
5875 * Invoke the parent method to do net80211 work.
5877 error = avp->av_newstate(vap, nstate, arg);
5882 * See above: ensure av_newstate() doesn't drop the lock
5885 IEEE80211_LOCK_ASSERT(ic);
5888 * XXX TODO: if nstate is _S_CAC, then we should disable
5889 * ACK processing until CAC is completed.
5893 * XXX TODO: if we're on a passive channel, then we should
5894 * not allow any ACKs or self-generated frames until we hear
5895 * a beacon. Unfortunately there isn't a notification from
5896 * net80211 so perhaps we could slot that particular check
5897 * into the mgmt receive path and just ensure that we clear
5898 * it on RX of beacons in passive mode (and only clear it
5903 * XXX TODO: net80211 should be tracking whether channels
5904 * have heard beacons and are thus considered "OK" for
5905 * transmitting - and then inform the driver about this
5906 * state change. That way if we hear an AP go quiet
5907 * (and nothing else is beaconing on a channel) the
5908 * channel can go back to being passive until another
5913 * XXX TODO: if nstate is _S_CAC, then we should disable
5914 * ACK processing until CAC is completed.
5918 * XXX TODO: if we're on a passive channel, then we should
5919 * not allow any ACKs or self-generated frames until we hear
5920 * a beacon. Unfortunately there isn't a notification from
5921 * net80211 so perhaps we could slot that particular check
5922 * into the mgmt receive path and just ensure that we clear
5923 * it on RX of beacons in passive mode (and only clear it
5928 * XXX TODO: net80211 should be tracking whether channels
5929 * have heard beacons and are thus considered "OK" for
5930 * transmitting - and then inform the driver about this
5931 * state change. That way if we hear an AP go quiet
5932 * (and nothing else is beaconing on a channel) the
5933 * channel can go back to being passive until another
5937 if (nstate == IEEE80211_S_RUN) {
5938 /* NB: collect bss node again, it may have changed */
5939 ieee80211_free_node(ni);
5940 ni = ieee80211_ref_node(vap->iv_bss);
5942 DPRINTF(sc, ATH_DEBUG_STATE,
5943 "%s(RUN): iv_flags 0x%08x bintvl %d bssid %s "
5944 "capinfo 0x%04x chan %d\n", __func__,
5945 vap->iv_flags, ni->ni_intval, ether_sprintf(ni->ni_bssid),
5946 ni->ni_capinfo, ieee80211_chan2ieee(ic, ic->ic_curchan));
5948 switch (vap->iv_opmode) {
5949 #ifdef IEEE80211_SUPPORT_TDMA
5950 case IEEE80211_M_AHDEMO:
5951 if ((vap->iv_caps & IEEE80211_C_TDMA) == 0)
5955 case IEEE80211_M_HOSTAP:
5956 case IEEE80211_M_IBSS:
5957 case IEEE80211_M_MBSS:
5960 * TODO: Enable ACK processing (ie, clear AR_DIAG_ACK_DIS.)
5961 * For channels that are in CAC, we may have disabled
5962 * this during CAC to ensure we don't ACK frames
5967 * Allocate and setup the beacon frame.
5969 * Stop any previous beacon DMA. This may be
5970 * necessary, for example, when an ibss merge
5971 * causes reconfiguration; there will be a state
5972 * transition from RUN->RUN that means we may
5973 * be called with beacon transmission active.
5975 ath_hal_stoptxdma(ah, sc->sc_bhalq);
5977 error = ath_beacon_alloc(sc, ni);
5981 * If joining an adhoc network defer beacon timer
5982 * configuration to the next beacon frame so we
5983 * have a current TSF to use. Otherwise we're
5984 * starting an ibss/bss so there's no need to delay;
5985 * if this is the first vap moving to RUN state, then
5986 * beacon state needs to be [re]configured.
5988 if (vap->iv_opmode == IEEE80211_M_IBSS &&
5989 ni->ni_tstamp.tsf != 0) {
5990 sc->sc_syncbeacon = 1;
5991 } else if (!sc->sc_beacons) {
5992 #ifdef IEEE80211_SUPPORT_TDMA
5993 if (vap->iv_caps & IEEE80211_C_TDMA)
5994 ath_tdma_config(sc, vap);
5997 ath_beacon_config(sc, vap);
6001 case IEEE80211_M_STA:
6003 * Defer beacon timer configuration to the next
6004 * beacon frame so we have a current TSF to use
6005 * (any TSF collected when scanning is likely old).
6006 * However if it's due to a CSA -> RUN transition,
6007 * force a beacon update so we pick up a lack of
6008 * beacons from an AP in CAC and thus force a
6011 * And, there's also corner cases here where
6012 * after a scan, the AP may have disappeared.
6013 * In that case, we may not receive an actual
6014 * beacon to update the beacon timer and thus we
6015 * won't get notified of the missing beacons.
6017 if (ostate != IEEE80211_S_RUN &&
6018 ostate != IEEE80211_S_SLEEP) {
6019 DPRINTF(sc, ATH_DEBUG_BEACON,
6020 "%s: STA; syncbeacon=1\n", __func__);
6021 sc->sc_syncbeacon = 1;
6023 /* Quiet time handling - ensure we resync */
6024 memset(&avp->quiet_ie, 0, sizeof(avp->quiet_ie));
6026 if (csa_run_transition)
6027 ath_beacon_config(sc, vap);
6032 * Reconfigure beacons during reset; as otherwise
6033 * we won't get the beacon timers reprogrammed
6034 * after a reset and thus we won't pick up a
6035 * beacon miss interrupt.
6037 * Hopefully we'll see a beacon before the BMISS
6038 * timer fires (too often), leading to a STA
6044 case IEEE80211_M_MONITOR:
6046 * Monitor mode vaps have only INIT->RUN and RUN->RUN
6047 * transitions so we must re-enable interrupts here to
6048 * handle the case of a single monitor mode vap.
6050 ath_hal_intrset(ah, sc->sc_imask);
6052 case IEEE80211_M_WDS:
6058 * Let the hal process statistics collected during a
6059 * scan so it can provide calibrated noise floor data.
6061 ath_hal_process_noisefloor(ah);
6063 * Reset rssi stats; maybe not the best place...
6065 sc->sc_halstats.ns_avgbrssi = ATH_RSSI_DUMMY_MARKER;
6066 sc->sc_halstats.ns_avgrssi = ATH_RSSI_DUMMY_MARKER;
6067 sc->sc_halstats.ns_avgtxrssi = ATH_RSSI_DUMMY_MARKER;
6070 * Force awake for RUN mode.
6073 ath_power_setselfgen(sc, HAL_PM_AWAKE);
6074 ath_power_setpower(sc, HAL_PM_AWAKE, 1);
6077 * Finally, start any timers and the task q thread
6078 * (in case we didn't go through SCAN state).
6080 if (ath_longcalinterval != 0) {
6081 /* start periodic recalibration timer */
6082 callout_reset(&sc->sc_cal_ch, 1, ath_calibrate, sc);
6084 DPRINTF(sc, ATH_DEBUG_CALIBRATE,
6085 "%s: calibration disabled\n", __func__);
6089 taskqueue_unblock(sc->sc_tq);
6090 } else if (nstate == IEEE80211_S_INIT) {
6092 /* Quiet time handling - ensure we resync */
6093 memset(&avp->quiet_ie, 0, sizeof(avp->quiet_ie));
6096 * If there are no vaps left in RUN state then
6097 * shutdown host/driver operation:
6098 * o disable interrupts
6099 * o disable the task queue thread
6100 * o mark beacon processing as stopped
6102 if (!ath_isanyrunningvaps(vap)) {
6103 sc->sc_imask &= ~(HAL_INT_SWBA | HAL_INT_BMISS);
6104 /* disable interrupts */
6105 ath_hal_intrset(ah, sc->sc_imask &~ HAL_INT_GLOBAL);
6106 taskqueue_block(sc->sc_tq);
6111 * For at least STA mode we likely should clear the ANI
6112 * and NF calibration state and allow the NIC/HAL to figure
6113 * out optimal parameters at runtime. Otherwise if we
6114 * disassociate due to interference / deafness it may persist
6115 * when we reconnect.
6117 * Note: may need to do this for other states too, not just
6120 #ifdef IEEE80211_SUPPORT_TDMA
6121 ath_hal_setcca(ah, AH_TRUE);
6123 } else if (nstate == IEEE80211_S_SLEEP) {
6124 /* We're going to sleep, so transition appropriately */
6125 /* For now, only do this if we're a single STA vap */
6126 if (sc->sc_nvaps == 1 &&
6127 vap->iv_opmode == IEEE80211_M_STA) {
6128 DPRINTF(sc, ATH_DEBUG_BEACON, "%s: syncbeacon=%d\n", __func__, sc->sc_syncbeacon);
6131 * Always at least set the self-generated
6132 * frame config to set PWRMGT=1.
6134 ath_power_setselfgen(sc, HAL_PM_NETWORK_SLEEP);
6137 * If we're not syncing beacons, transition
6140 * We stay awake if syncbeacon > 0 in case
6141 * we need to listen for some beacons otherwise
6142 * our beacon timer config may be wrong.
6144 if (sc->sc_syncbeacon == 0) {
6145 ath_power_setpower(sc, HAL_PM_NETWORK_SLEEP, 1);
6151 * Note - the ANI/calibration timer isn't re-enabled during
6152 * network sleep for now. One unfortunate side-effect is that
6153 * the PHY/airtime statistics aren't gathered on the channel
6154 * but I haven't yet tested to see if reading those registers
6155 * CAN occur during network sleep.
6157 * This should be revisited in a future commit, even if it's
6158 * just to split out the airtime polling from ANI/calibration.
6160 } else if (nstate == IEEE80211_S_SCAN) {
6161 /* Quiet time handling - ensure we resync */
6162 memset(&avp->quiet_ie, 0, sizeof(avp->quiet_ie));
6165 * If we're in scan mode then startpcureceive() is
6166 * hopefully being called with "reset ANI" for this channel;
6167 * but once we attempt to reassociate we program in the previous
6168 * ANI values and.. not do any calibration until we're running.
6169 * This may mean we stay deaf unless we can associate successfully.
6171 * So do kick off the cal timer to get NF/ANI going.
6174 if (ath_longcalinterval != 0) {
6175 /* start periodic recalibration timer */
6176 callout_reset(&sc->sc_cal_ch, 1, ath_calibrate, sc);
6178 DPRINTF(sc, ATH_DEBUG_CALIBRATE,
6179 "%s: calibration disabled\n", __func__);
6184 ieee80211_free_node(ni);
6187 * Restore the power state - either to what it was, or
6188 * to network_sleep if it's alright.
6191 ath_power_restore_power_state(sc);
6197 * Allocate a key cache slot to the station so we can
6198 * setup a mapping from key index to node. The key cache
6199 * slot is needed for managing antenna state and for
6200 * compression when stations do not use crypto. We do
6201 * it uniliaterally here; if crypto is employed this slot
6202 * will be reassigned.
6205 ath_setup_stationkey(struct ieee80211_node *ni)
6207 struct ieee80211vap *vap = ni->ni_vap;
6208 struct ath_softc *sc = vap->iv_ic->ic_softc;
6209 ieee80211_keyix keyix, rxkeyix;
6211 /* XXX should take a locked ref to vap->iv_bss */
6212 if (!ath_key_alloc(vap, &ni->ni_ucastkey, &keyix, &rxkeyix)) {
6214 * Key cache is full; we'll fall back to doing
6215 * the more expensive lookup in software. Note
6216 * this also means no h/w compression.
6218 /* XXX msg+statistic */
6221 ni->ni_ucastkey.wk_keyix = keyix;
6222 ni->ni_ucastkey.wk_rxkeyix = rxkeyix;
6223 /* NB: must mark device key to get called back on delete */
6224 ni->ni_ucastkey.wk_flags |= IEEE80211_KEY_DEVKEY;
6225 IEEE80211_ADDR_COPY(ni->ni_ucastkey.wk_macaddr, ni->ni_macaddr);
6226 /* NB: this will create a pass-thru key entry */
6227 ath_keyset(sc, vap, &ni->ni_ucastkey, vap->iv_bss);
6232 * Setup driver-specific state for a newly associated node.
6233 * Note that we're called also on a re-associate, the isnew
6234 * param tells us if this is the first time or not.
6237 ath_newassoc(struct ieee80211_node *ni, int isnew)
6239 struct ath_node *an = ATH_NODE(ni);
6240 struct ieee80211vap *vap = ni->ni_vap;
6241 struct ath_softc *sc = vap->iv_ic->ic_softc;
6242 const struct ieee80211_txparam *tp = ni->ni_txparms;
6244 an->an_mcastrix = ath_tx_findrix(sc, tp->mcastrate);
6245 an->an_mgmtrix = ath_tx_findrix(sc, tp->mgmtrate);
6247 DPRINTF(sc, ATH_DEBUG_NODE, "%s: %6D: reassoc; isnew=%d, is_powersave=%d\n",
6252 an->an_is_powersave);
6255 ath_rate_newassoc(sc, an, isnew);
6256 ATH_NODE_UNLOCK(an);
6259 (vap->iv_flags & IEEE80211_F_PRIVACY) == 0 && sc->sc_hasclrkey &&
6260 ni->ni_ucastkey.wk_keyix == IEEE80211_KEYIX_NONE)
6261 ath_setup_stationkey(ni);
6264 * If we're reassociating, make sure that any paused queues
6267 * Now, we may have frames in the hardware queue for this node.
6268 * So if we are reassociating and there are frames in the queue,
6269 * we need to go through the cleanup path to ensure that they're
6270 * marked as non-aggregate.
6273 DPRINTF(sc, ATH_DEBUG_NODE,
6274 "%s: %6D: reassoc; is_powersave=%d\n",
6278 an->an_is_powersave);
6280 /* XXX for now, we can't hold the lock across assoc */
6281 ath_tx_node_reassoc(sc, an);
6283 /* XXX for now, we can't hold the lock across wakeup */
6284 if (an->an_is_powersave)
6285 ath_tx_node_wakeup(sc, an);
6290 ath_setregdomain(struct ieee80211com *ic, struct ieee80211_regdomain *reg,
6291 int nchans, struct ieee80211_channel chans[])
6293 struct ath_softc *sc = ic->ic_softc;
6294 struct ath_hal *ah = sc->sc_ah;
6297 DPRINTF(sc, ATH_DEBUG_REGDOMAIN,
6298 "%s: rd %u cc %u location %c%s\n",
6299 __func__, reg->regdomain, reg->country, reg->location,
6300 reg->ecm ? " ecm" : "");
6302 status = ath_hal_set_channels(ah, chans, nchans,
6303 reg->country, reg->regdomain);
6304 if (status != HAL_OK) {
6305 DPRINTF(sc, ATH_DEBUG_REGDOMAIN, "%s: failed, status %u\n",
6307 return EINVAL; /* XXX */
6314 ath_getradiocaps(struct ieee80211com *ic,
6315 int maxchans, int *nchans, struct ieee80211_channel chans[])
6317 struct ath_softc *sc = ic->ic_softc;
6318 struct ath_hal *ah = sc->sc_ah;
6320 DPRINTF(sc, ATH_DEBUG_REGDOMAIN, "%s: use rd %u cc %d\n",
6321 __func__, SKU_DEBUG, CTRY_DEFAULT);
6323 /* XXX check return */
6324 (void) ath_hal_getchannels(ah, chans, maxchans, nchans,
6325 HAL_MODE_ALL, CTRY_DEFAULT, SKU_DEBUG, AH_TRUE);
6330 ath_getchannels(struct ath_softc *sc)
6332 struct ieee80211com *ic = &sc->sc_ic;
6333 struct ath_hal *ah = sc->sc_ah;
6337 * Collect channel set based on EEPROM contents.
6339 status = ath_hal_init_channels(ah, ic->ic_channels, IEEE80211_CHAN_MAX,
6340 &ic->ic_nchans, HAL_MODE_ALL, CTRY_DEFAULT, SKU_NONE, AH_TRUE);
6341 if (status != HAL_OK) {
6342 device_printf(sc->sc_dev,
6343 "%s: unable to collect channel list from hal, status %d\n",
6347 (void) ath_hal_getregdomain(ah, &sc->sc_eerd);
6348 ath_hal_getcountrycode(ah, &sc->sc_eecc); /* NB: cannot fail */
6349 /* XXX map Atheros sku's to net80211 SKU's */
6350 /* XXX net80211 types too small */
6351 ic->ic_regdomain.regdomain = (uint16_t) sc->sc_eerd;
6352 ic->ic_regdomain.country = (uint16_t) sc->sc_eecc;
6353 ic->ic_regdomain.isocc[0] = ' '; /* XXX don't know */
6354 ic->ic_regdomain.isocc[1] = ' ';
6356 ic->ic_regdomain.ecm = 1;
6357 ic->ic_regdomain.location = 'I';
6359 DPRINTF(sc, ATH_DEBUG_REGDOMAIN,
6360 "%s: eeprom rd %u cc %u (mapped rd %u cc %u) location %c%s\n",
6361 __func__, sc->sc_eerd, sc->sc_eecc,
6362 ic->ic_regdomain.regdomain, ic->ic_regdomain.country,
6363 ic->ic_regdomain.location, ic->ic_regdomain.ecm ? " ecm" : "");
6368 ath_rate_setup(struct ath_softc *sc, u_int mode)
6370 struct ath_hal *ah = sc->sc_ah;
6371 const HAL_RATE_TABLE *rt;
6374 case IEEE80211_MODE_11A:
6375 rt = ath_hal_getratetable(ah, HAL_MODE_11A);
6377 case IEEE80211_MODE_HALF:
6378 rt = ath_hal_getratetable(ah, HAL_MODE_11A_HALF_RATE);
6380 case IEEE80211_MODE_QUARTER:
6381 rt = ath_hal_getratetable(ah, HAL_MODE_11A_QUARTER_RATE);
6383 case IEEE80211_MODE_11B:
6384 rt = ath_hal_getratetable(ah, HAL_MODE_11B);
6386 case IEEE80211_MODE_11G:
6387 rt = ath_hal_getratetable(ah, HAL_MODE_11G);
6389 case IEEE80211_MODE_TURBO_A:
6390 rt = ath_hal_getratetable(ah, HAL_MODE_108A);
6392 case IEEE80211_MODE_TURBO_G:
6393 rt = ath_hal_getratetable(ah, HAL_MODE_108G);
6395 case IEEE80211_MODE_STURBO_A:
6396 rt = ath_hal_getratetable(ah, HAL_MODE_TURBO);
6398 case IEEE80211_MODE_11NA:
6399 rt = ath_hal_getratetable(ah, HAL_MODE_11NA_HT20);
6401 case IEEE80211_MODE_11NG:
6402 rt = ath_hal_getratetable(ah, HAL_MODE_11NG_HT20);
6405 DPRINTF(sc, ATH_DEBUG_ANY, "%s: invalid mode %u\n",
6409 sc->sc_rates[mode] = rt;
6410 return (rt != NULL);
6414 ath_setcurmode(struct ath_softc *sc, enum ieee80211_phymode mode)
6416 /* NB: on/off times from the Atheros NDIS driver, w/ permission */
6417 static const struct {
6418 u_int rate; /* tx/rx 802.11 rate */
6419 u_int16_t timeOn; /* LED on time (ms) */
6420 u_int16_t timeOff; /* LED off time (ms) */
6436 /* XXX half/quarter rates */
6438 const HAL_RATE_TABLE *rt;
6441 memset(sc->sc_rixmap, 0xff, sizeof(sc->sc_rixmap));
6442 rt = sc->sc_rates[mode];
6443 KASSERT(rt != NULL, ("no h/w rate set for phy mode %u", mode));
6444 for (i = 0; i < rt->rateCount; i++) {
6445 uint8_t ieeerate = rt->info[i].dot11Rate & IEEE80211_RATE_VAL;
6446 if (rt->info[i].phy != IEEE80211_T_HT)
6447 sc->sc_rixmap[ieeerate] = i;
6449 sc->sc_rixmap[ieeerate | IEEE80211_RATE_MCS] = i;
6451 memset(sc->sc_hwmap, 0, sizeof(sc->sc_hwmap));
6452 for (i = 0; i < nitems(sc->sc_hwmap); i++) {
6453 if (i >= rt->rateCount) {
6454 sc->sc_hwmap[i].ledon = (500 * hz) / 1000;
6455 sc->sc_hwmap[i].ledoff = (130 * hz) / 1000;
6458 sc->sc_hwmap[i].ieeerate =
6459 rt->info[i].dot11Rate & IEEE80211_RATE_VAL;
6460 if (rt->info[i].phy == IEEE80211_T_HT)
6461 sc->sc_hwmap[i].ieeerate |= IEEE80211_RATE_MCS;
6462 sc->sc_hwmap[i].txflags = IEEE80211_RADIOTAP_F_DATAPAD;
6463 if (rt->info[i].shortPreamble ||
6464 rt->info[i].phy == IEEE80211_T_OFDM)
6465 sc->sc_hwmap[i].txflags |= IEEE80211_RADIOTAP_F_SHORTPRE;
6466 sc->sc_hwmap[i].rxflags = sc->sc_hwmap[i].txflags;
6467 for (j = 0; j < nitems(blinkrates)-1; j++)
6468 if (blinkrates[j].rate == sc->sc_hwmap[i].ieeerate)
6470 /* NB: this uses the last entry if the rate isn't found */
6471 /* XXX beware of overlow */
6472 sc->sc_hwmap[i].ledon = (blinkrates[j].timeOn * hz) / 1000;
6473 sc->sc_hwmap[i].ledoff = (blinkrates[j].timeOff * hz) / 1000;
6475 sc->sc_currates = rt;
6476 sc->sc_curmode = mode;
6478 * All protection frames are transmitted at 2Mb/s for
6479 * 11g, otherwise at 1Mb/s.
6481 if (mode == IEEE80211_MODE_11G)
6482 sc->sc_protrix = ath_tx_findrix(sc, 2*2);
6484 sc->sc_protrix = ath_tx_findrix(sc, 2*1);
6485 /* NB: caller is responsible for resetting rate control state */
6489 ath_watchdog(void *arg)
6491 struct ath_softc *sc = arg;
6492 struct ieee80211com *ic = &sc->sc_ic;
6495 ATH_LOCK_ASSERT(sc);
6497 if (sc->sc_wd_timer != 0 && --sc->sc_wd_timer == 0) {
6500 ath_power_set_power_state(sc, HAL_PM_AWAKE);
6502 if (ath_hal_gethangstate(sc->sc_ah, 0xffff, &hangs) &&
6504 device_printf(sc->sc_dev, "%s hang detected (0x%x)\n",
6505 hangs & 0xff ? "bb" : "mac", hangs);
6507 device_printf(sc->sc_dev, "device timeout\n");
6509 counter_u64_add(ic->ic_oerrors, 1);
6510 sc->sc_stats.ast_watchdog++;
6512 ath_power_restore_power_state(sc);
6516 * We can't hold the lock across the ath_reset() call.
6518 * And since this routine can't hold a lock and sleep,
6519 * do the reset deferred.
6522 taskqueue_enqueue(sc->sc_tq, &sc->sc_resettask);
6525 callout_schedule(&sc->sc_wd_ch, hz);
6529 ath_parent(struct ieee80211com *ic)
6531 struct ath_softc *sc = ic->ic_softc;
6532 int error = EDOOFUS;
6535 if (ic->ic_nrunning > 0) {
6537 * To avoid rescanning another access point,
6538 * do not call ath_init() here. Instead,
6539 * only reflect promisc mode settings.
6541 if (sc->sc_running) {
6542 ath_power_set_power_state(sc, HAL_PM_AWAKE);
6544 ath_power_restore_power_state(sc);
6545 } else if (!sc->sc_invalid) {
6547 * Beware of being called during attach/detach
6548 * to reset promiscuous mode. In that case we
6549 * will still be marked UP but not RUNNING.
6550 * However trying to re-init the interface
6551 * is the wrong thing to do as we've already
6552 * torn down much of our state. There's
6553 * probably a better way to deal with this.
6555 error = ath_init(sc);
6559 if (!sc->sc_invalid)
6560 ath_power_setpower(sc, HAL_PM_FULL_SLEEP, 1);
6565 #ifdef ATH_TX99_DIAG
6566 if (sc->sc_tx99 != NULL)
6567 sc->sc_tx99->start(sc->sc_tx99);
6570 ieee80211_start_all(ic);
6575 * Announce various information on device/driver attach.
6578 ath_announce(struct ath_softc *sc)
6580 struct ath_hal *ah = sc->sc_ah;
6582 device_printf(sc->sc_dev, "%s mac %d.%d RF%s phy %d.%d\n",
6583 ath_hal_mac_name(ah), ah->ah_macVersion, ah->ah_macRev,
6584 ath_hal_rf_name(ah), ah->ah_phyRev >> 4, ah->ah_phyRev & 0xf);
6585 device_printf(sc->sc_dev, "2GHz radio: 0x%.4x; 5GHz radio: 0x%.4x\n",
6586 ah->ah_analog2GhzRev, ah->ah_analog5GhzRev);
6589 for (i = 0; i <= WME_AC_VO; i++) {
6590 struct ath_txq *txq = sc->sc_ac2q[i];
6591 device_printf(sc->sc_dev,
6592 "Use hw queue %u for %s traffic\n",
6593 txq->axq_qnum, ieee80211_wme_acnames[i]);
6595 device_printf(sc->sc_dev, "Use hw queue %u for CAB traffic\n",
6596 sc->sc_cabq->axq_qnum);
6597 device_printf(sc->sc_dev, "Use hw queue %u for beacons\n",
6600 if (ath_rxbuf != ATH_RXBUF)
6601 device_printf(sc->sc_dev, "using %u rx buffers\n", ath_rxbuf);
6602 if (ath_txbuf != ATH_TXBUF)
6603 device_printf(sc->sc_dev, "using %u tx buffers\n", ath_txbuf);
6604 if (sc->sc_mcastkey && bootverbose)
6605 device_printf(sc->sc_dev, "using multicast key search\n");
6609 ath_dfs_tasklet(void *p, int npending)
6611 struct ath_softc *sc = (struct ath_softc *) p;
6612 struct ieee80211com *ic = &sc->sc_ic;
6615 * If previous processing has found a radar event,
6616 * signal this to the net80211 layer to begin DFS
6619 if (ath_dfs_process_radar_event(sc, sc->sc_curchan)) {
6620 /* DFS event found, initiate channel change */
6623 * XXX TODO: immediately disable ACK processing
6624 * on the current channel. This would be done
6625 * by setting AR_DIAG_ACK_DIS (AR5212; may be
6626 * different for others) until we are out of
6631 * XXX doesn't currently tell us whether the event
6632 * XXX was found in the primary or extension
6636 ieee80211_dfs_notify_radar(ic, sc->sc_curchan);
6637 IEEE80211_UNLOCK(ic);
6642 * Enable/disable power save. This must be called with
6643 * no TX driver locks currently held, so it should only
6644 * be called from the RX path (which doesn't hold any
6648 ath_node_powersave(struct ieee80211_node *ni, int enable)
6651 struct ath_node *an = ATH_NODE(ni);
6652 struct ieee80211com *ic = ni->ni_ic;
6653 struct ath_softc *sc = ic->ic_softc;
6654 struct ath_vap *avp = ATH_VAP(ni->ni_vap);
6656 /* XXX and no TXQ locks should be held here */
6658 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE, "%s: %6D: enable=%d\n",
6664 /* Suspend or resume software queue handling */
6666 ath_tx_node_sleep(sc, an);
6668 ath_tx_node_wakeup(sc, an);
6670 /* Update net80211 state */
6671 avp->av_node_ps(ni, enable);
6673 struct ath_vap *avp = ATH_VAP(ni->ni_vap);
6675 /* Update net80211 state */
6676 avp->av_node_ps(ni, enable);
6677 #endif/* ATH_SW_PSQ */
6681 * Notification from net80211 that the powersave queue state has
6684 * Since the software queue also may have some frames:
6686 * + if the node software queue has frames and the TID state
6687 * is 0, we set the TIM;
6688 * + if the node and the stack are both empty, we clear the TIM bit.
6689 * + If the stack tries to set the bit, always set it.
6690 * + If the stack tries to clear the bit, only clear it if the
6691 * software queue in question is also cleared.
6693 * TODO: this is called during node teardown; so let's ensure this
6694 * is all correctly handled and that the TIM bit is cleared.
6695 * It may be that the node flush is called _AFTER_ the net80211
6696 * stack clears the TIM.
6698 * Here is the racy part. Since it's possible >1 concurrent,
6699 * overlapping TXes will appear complete with a TX completion in
6700 * another thread, it's possible that the concurrent TIM calls will
6701 * clash. We can't hold the node lock here because setting the
6702 * TIM grabs the net80211 comlock and this may cause a LOR.
6703 * The solution is either to totally serialise _everything_ at
6704 * this point (ie, all TX, completion and any reset/flush go into
6705 * one taskqueue) or a new "ath TIM lock" needs to be created that
6706 * just wraps the driver state change and this call to avp->av_set_tim().
6708 * The same race exists in the net80211 power save queue handling
6709 * as well. Since multiple transmitting threads may queue frames
6710 * into the driver, as well as ps-poll and the driver transmitting
6711 * frames (and thus clearing the psq), it's quite possible that
6712 * a packet entering the PSQ and a ps-poll being handled will
6713 * race, causing the TIM to be cleared and not re-set.
6716 ath_node_set_tim(struct ieee80211_node *ni, int enable)
6719 struct ieee80211com *ic = ni->ni_ic;
6720 struct ath_softc *sc = ic->ic_softc;
6721 struct ath_node *an = ATH_NODE(ni);
6722 struct ath_vap *avp = ATH_VAP(ni->ni_vap);
6726 an->an_stack_psq = enable;
6729 * This will get called for all operating modes,
6730 * even if avp->av_set_tim is unset.
6731 * It's currently set for hostap/ibss modes; but
6732 * the same infrastructure is used for both STA
6733 * and AP/IBSS node power save.
6735 if (avp->av_set_tim == NULL) {
6741 * If setting the bit, always set it here.
6742 * If clearing the bit, only clear it if the
6743 * software queue is also empty.
6745 * If the node has left power save, just clear the TIM
6746 * bit regardless of the state of the power save queue.
6748 * XXX TODO: although atomics are used, it's quite possible
6749 * that a race will occur between this and setting/clearing
6750 * in another thread. TX completion will occur always in
6751 * one thread, however setting/clearing the TIM bit can come
6752 * from a variety of different process contexts!
6754 if (enable && an->an_tim_set == 1) {
6755 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6756 "%s: %6D: enable=%d, tim_set=1, ignoring\n",
6762 } else if (enable) {
6763 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6764 "%s: %6D: enable=%d, enabling TIM\n",
6771 changed = avp->av_set_tim(ni, enable);
6772 } else if (an->an_swq_depth == 0) {
6774 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6775 "%s: %6D: enable=%d, an_swq_depth == 0, disabling\n",
6782 changed = avp->av_set_tim(ni, enable);
6783 } else if (! an->an_is_powersave) {
6785 * disable regardless; the node isn't in powersave now
6787 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6788 "%s: %6D: enable=%d, an_pwrsave=0, disabling\n",
6795 changed = avp->av_set_tim(ni, enable);
6798 * psq disable, node is currently in powersave, node
6799 * software queue isn't empty, so don't clear the TIM bit
6803 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6804 "%s: %6D: enable=%d, an_swq_depth > 0, ignoring\n",
6814 struct ath_vap *avp = ATH_VAP(ni->ni_vap);
6817 * Some operating modes don't set av_set_tim(), so don't
6820 if (avp->av_set_tim == NULL)
6823 return (avp->av_set_tim(ni, enable));
6824 #endif /* ATH_SW_PSQ */
6828 * Set or update the TIM from the software queue.
6830 * Check the software queue depth before attempting to do lock
6831 * anything; that avoids trying to obtain the lock. Then,
6832 * re-check afterwards to ensure nothing has changed in the
6835 * set: This is designed to be called from the TX path, after
6836 * a frame has been queued; to see if the swq > 0.
6838 * clear: This is designed to be called from the buffer completion point
6839 * (right now it's ath_tx_default_comp()) where the state of
6840 * a software queue has changed.
6842 * It makes sense to place it at buffer free / completion rather
6843 * than after each software queue operation, as there's no real
6844 * point in churning the TIM bit as the last frames in the software
6845 * queue are transmitted. If they fail and we retry them, we'd
6846 * just be setting the TIM bit again anyway.
6849 ath_tx_update_tim(struct ath_softc *sc, struct ieee80211_node *ni,
6853 struct ath_node *an;
6854 struct ath_vap *avp;
6856 /* Don't do this for broadcast/etc frames */
6861 avp = ATH_VAP(ni->ni_vap);
6864 * And for operating modes without the TIM handler set, let's
6867 if (avp->av_set_tim == NULL)
6870 ATH_TX_LOCK_ASSERT(sc);
6873 if (an->an_is_powersave &&
6874 an->an_tim_set == 0 &&
6875 an->an_swq_depth != 0) {
6876 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6877 "%s: %6D: swq_depth>0, tim_set=0, set!\n",
6882 (void) avp->av_set_tim(ni, 1);
6886 * Don't bother grabbing the lock unless the queue is empty.
6888 if (an->an_swq_depth != 0)
6891 if (an->an_is_powersave &&
6892 an->an_stack_psq == 0 &&
6893 an->an_tim_set == 1 &&
6894 an->an_swq_depth == 0) {
6895 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6896 "%s: %6D: swq_depth=0, tim_set=1, psq_set=0,"
6902 (void) avp->av_set_tim(ni, 0);
6907 #endif /* ATH_SW_PSQ */
6911 * Received a ps-poll frame from net80211.
6913 * Here we get a chance to serve out a software-queued frame ourselves
6914 * before we punt it to net80211 to transmit us one itself - either
6915 * because there's traffic in the net80211 psq, or a NULL frame to
6916 * indicate there's nothing else.
6919 ath_node_recv_pspoll(struct ieee80211_node *ni, struct mbuf *m)
6922 struct ath_node *an;
6923 struct ath_vap *avp;
6924 struct ieee80211com *ic = ni->ni_ic;
6925 struct ath_softc *sc = ic->ic_softc;
6933 * Unassociated (temporary node) station.
6935 if (ni->ni_associd == 0)
6939 * We do have an active node, so let's begin looking into it.
6942 avp = ATH_VAP(ni->ni_vap);
6945 * For now, we just call the original ps-poll method.
6946 * Once we're ready to flip this on:
6948 * + Set leak to 1, as no matter what we're going to have
6950 * + Check the software queue and if there's something in it,
6951 * schedule the highest TID thas has traffic from this node.
6952 * Then make sure we schedule the software scheduler to
6953 * run so it picks up said frame.
6955 * That way whatever happens, we'll at least send _a_ frame
6956 * to the given node.
6958 * Again, yes, it's crappy QoS if the node has multiple
6959 * TIDs worth of traffic - but let's get it working first
6960 * before we optimise it.
6962 * Also yes, there's definitely latency here - we're not
6963 * direct dispatching to the hardware in this path (and
6964 * we're likely being called from the packet receive path,
6965 * so going back into TX may be a little hairy!) but again
6966 * I'd like to get this working first before optimising
6973 * Legacy - we're called and the node isn't asleep.
6976 if (! an->an_is_powersave) {
6977 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
6978 "%s: %6D: not in powersave?\n",
6983 avp->av_recv_pspoll(ni, m);
6988 * We're in powersave.
6992 an->an_leak_count = 1;
6995 * Now, if there's no frames in the node, just punt to
6998 * Don't bother checking if the TIM bit is set, we really
6999 * only care if there are any frames here!
7001 if (an->an_swq_depth == 0) {
7003 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
7004 "%s: %6D: SWQ empty; punting to net80211\n",
7008 avp->av_recv_pspoll(ni, m);
7013 * Ok, let's schedule the highest TID that has traffic
7014 * and then schedule something.
7016 for (tid = IEEE80211_TID_SIZE - 1; tid >= 0; tid--) {
7017 struct ath_tid *atid = &an->an_tid[tid];
7021 if (atid->axq_depth == 0)
7023 ath_tx_tid_sched(sc, atid);
7025 * XXX we could do a direct call to the TXQ
7026 * scheduler code here to optimise latency
7027 * at the expense of a REALLY deep callstack.
7030 taskqueue_enqueue(sc->sc_tq, &sc->sc_txqtask);
7031 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
7032 "%s: %6D: leaking frame to TID %d\n",
7043 * XXX nothing in the TIDs at this point? Eek.
7045 DPRINTF(sc, ATH_DEBUG_NODE_PWRSAVE,
7046 "%s: %6D: TIDs empty, but ath_node showed traffic?!\n",
7050 avp->av_recv_pspoll(ni, m);
7052 avp->av_recv_pspoll(ni, m);
7053 #endif /* ATH_SW_PSQ */
7056 MODULE_VERSION(ath_main, 1);
7057 MODULE_DEPEND(ath_main, wlan, 1, 1, 1); /* 802.11 media layer */
7058 MODULE_DEPEND(ath_main, ath_rate, 1, 1, 1);
7059 MODULE_DEPEND(ath_main, ath_dfs, 1, 1, 1);
7060 MODULE_DEPEND(ath_main, ath_hal, 1, 1, 1);
7061 #if defined(IEEE80211_ALQ) || defined(AH_DEBUG_ALQ) || defined(ATH_DEBUG_ALQ)
7062 MODULE_DEPEND(ath_main, alq, 1, 1, 1);