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some of the 11n parts can hang under certain conditions without

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necessary workarounds, add code to detect these hangs and distinguish
them from other events; note this code is only invoked for anomalous
conditions and (at the moment) is a noop because the hang detection
code is in a new hal that's coming shortly
This commit is contained in:
Sam Leffler 2008-11-30 18:34:27 +00:00
parent 1b15625c19
commit 459bc4f0dd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=185480
1 changed files with 28 additions and 2 deletions
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30
sys/dev/ath/if_ath.c
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@ -1290,14 +1290,33 @@ ath_bmiss_vap(struct ieee80211vap *vap)
sc->sc_stats.ast_bmiss_phantom++;
}
static int
ath_hal_gethangstate(struct ath_hal *ah, uint32_t mask, uint32_t *hangs)
{
uint32_t rsize;
void *sp;
if (!ath_hal_getdiagstate(ah, 32, &mask, sizeof(&mask), &sp, &rsize))
return 0;
KASSERT(rsize == sizeof(uint32_t), ("resultsize %u", rsize));
*hangs = *(uint32_t *)sp;
return 1;
}
static void
ath_bmiss_proc(void *arg, int pending)
{
struct ath_softc *sc = arg;
struct ifnet *ifp = sc->sc_ifp;
uint32_t hangs;
DPRINTF(sc, ATH_DEBUG_ANY, "%s: pending %u\n", __func__, pending);
ieee80211_beacon_miss(ifp->if_l2com);
if (ath_hal_gethangstate(sc->sc_ah, 0xff, &hangs) && hangs != 0) {
if_printf(ifp, "bb hang detected (0x%x), reseting\n", hangs);
ath_reset(ifp);
} else
ieee80211_beacon_miss(ifp->if_l2com);
}
/*
@ -6324,7 +6343,14 @@ ath_watchdog(struct ifnet *ifp)
struct ath_softc *sc = ifp->if_softc;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) && !sc->sc_invalid) {
if_printf(ifp, "device timeout\n");
uint32_t hangs;
if (ath_hal_gethangstate(sc->sc_ah, 0xffff, &hangs) &&
hangs != 0) {
if_printf(ifp, "%s hang detected (0x%x)\n",
hangs & 0xff ? "bb" : "mac", hangs);
} else
if_printf(ifp, "device timeout\n");
ath_reset(ifp);
ifp->if_oerrors++;
sc->sc_stats.ast_watchdog++;