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- This driver used the if_watchdog timer both as a watchdog on transmit and

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auto-negotiation.  To make this simpler and easier to understand I have
  split this out into two separate timers.  One just manages the auto-neg
  side of things and one is a transmit watchdog.  Neither uses if_watchdog.
- Call ether_ifdetach() at the start of detach.
This commit is contained in:
John Baldwin 2009-11-19 18:43:43 +00:00
parent 770c8c790f
commit d4e576c497
2 changed files with 43 additions and 23 deletions
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60
sys/dev/my/if_my.c
View File

@ -126,7 +126,8 @@ static int my_ioctl(struct ifnet *, u_long, caddr_t);
static void my_init(void *);
static void my_init_locked(struct my_softc *);
static void my_stop(struct my_softc *);
static void my_watchdog(struct ifnet *);
static void my_autoneg_timeout(void *);
static void my_watchdog(void *);
static int my_shutdown(device_t);
static int my_ifmedia_upd(struct ifnet *);
static void my_ifmedia_sts(struct ifnet *, struct ifmediareq *);
@ -382,6 +383,15 @@ my_autoneg_xmit(struct my_softc * sc)
return;
}
static void
my_autoneg_timeout(void *arg)
{
struct my_softc *sc;
sc = arg;
MY_LOCK_ASSERT(sc);
my_autoneg_mii(sc, MY_FLAG_DELAYTIMEO, 1);
}
/*
* Invoke autonegotiation on a PHY.
@ -439,12 +449,13 @@ my_autoneg_mii(struct my_softc * sc, int flag, int verbose)
return;
}
my_autoneg_xmit(sc);
ifp->if_timer = 5;
callout_reset(&sc->my_autoneg_timer, hz * 5, my_autoneg_timeout,
sc);
sc->my_autoneg = 1;
sc->my_want_auto = 0;
return;
case MY_FLAG_DELAYTIMEO:
ifp->if_timer = 0;
callout_stop(&sc->my_autoneg_timer);
sc->my_autoneg = 0;
break;
default:
@ -661,7 +672,8 @@ my_setmode_mii(struct my_softc * sc, int media)
*/
if (sc->my_autoneg) {
device_printf(sc->my_dev, "canceling autoneg session\n");
ifp->if_timer = sc->my_autoneg = sc->my_want_auto = 0;
callout_stop(&sc->my_autoneg_timer);
sc->my_autoneg = sc->my_want_auto = 0;
bmcr = my_phy_readreg(sc, PHY_BMCR);
bmcr &= ~PHY_BMCR_AUTONEGENBL;
my_phy_writereg(sc, PHY_BMCR, bmcr);
@ -808,6 +820,8 @@ my_attach(device_t dev)
sc->my_dev = dev;
mtx_init(&sc->my_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
MTX_DEF);
callout_init_mtx(&sc->my_autoneg_timer, &sc->my_mtx, 0);
callout_init_mtx(&sc->my_watchdog, &sc->my_mtx, 0);
/*
* Map control/status registers.
@ -886,7 +900,6 @@ my_attach(device_t dev)
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = my_ioctl;
ifp->if_start = my_start;
ifp->if_watchdog = my_watchdog;
ifp->if_init = my_init;
ifp->if_baudrate = 10000000;
IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN);
@ -984,13 +997,15 @@ my_detach(device_t dev)
struct ifnet *ifp;
sc = device_get_softc(dev);
ifp = sc->my_ifp;
ether_ifdetach(ifp);
MY_LOCK(sc);
my_stop(sc);
MY_UNLOCK(sc);
bus_teardown_intr(dev, sc->my_irq, sc->my_intrhand);
callout_drain(&sc->my_watchdog);
callout_drain(&sc->my_autoneg_timer);
ifp = sc->my_ifp;
ether_ifdetach(ifp);
if_free(ifp);
free(sc->my_ldata_ptr, M_DEVBUF);
@ -1188,7 +1203,7 @@ my_txeof(struct my_softc * sc)
MY_LOCK_ASSERT(sc);
ifp = sc->my_ifp;
/* Clear the timeout timer. */
ifp->if_timer = 0;
sc->my_timer = 0;
if (sc->my_cdata.my_tx_head == NULL) {
return;
}
@ -1240,7 +1255,7 @@ my_txeoc(struct my_softc * sc)
MY_LOCK_ASSERT(sc);
ifp = sc->my_ifp;
ifp->if_timer = 0;
sc->my_timer = 0;
if (sc->my_cdata.my_tx_head == NULL) {
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
sc->my_cdata.my_tx_tail = NULL;
@ -1249,7 +1264,7 @@ my_txeoc(struct my_softc * sc)
} else {
if (MY_TXOWN(sc->my_cdata.my_tx_head) == MY_UNSENT) {
MY_TXOWN(sc->my_cdata.my_tx_head) = MY_OWNByNIC;
ifp->if_timer = 5;
sc->my_timer = 5;
CSR_WRITE_4(sc, MY_TXPDR, 0xFFFFFFFF);
}
}
@ -1455,7 +1470,7 @@ my_start_locked(struct ifnet * ifp)
/*
* Set a timeout in case the chip goes out to lunch.
*/
ifp->if_timer = 5;
sc->my_timer = 5;
return;
}
@ -1555,6 +1570,8 @@ my_init_locked(struct my_softc *sc)
my_phy_writereg(sc, PHY_BMCR, phy_bmcr);
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
callout_reset(&sc->my_watchdog, hz, my_watchdog, sc);
return;
}
@ -1680,17 +1697,18 @@ my_ioctl(struct ifnet * ifp, u_long command, caddr_t data)
}
static void
my_watchdog(struct ifnet * ifp)
my_watchdog(void *arg)
{
struct my_softc *sc;
struct ifnet *ifp;
sc = ifp->if_softc;
MY_LOCK(sc);
if (sc->my_autoneg) {
my_autoneg_mii(sc, MY_FLAG_DELAYTIMEO, 1);
MY_UNLOCK(sc);
sc = arg;
MY_LOCK_ASSERT(sc);
callout_reset(&sc->my_watchdog, hz, my_watchdog, sc);
if (sc->my_timer == 0 || --sc->my_timer > 0)
return;
}
ifp = sc->my_ifp;
ifp->if_oerrors++;
if_printf(ifp, "watchdog timeout\n");
if (!(my_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT))
@ -1700,8 +1718,6 @@ my_watchdog(struct ifnet * ifp)
my_init_locked(sc);
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
my_start_locked(ifp);
MY_UNLOCK(sc);
return;
}
@ -1716,7 +1732,9 @@ my_stop(struct my_softc * sc)
MY_LOCK_ASSERT(sc);
ifp = sc->my_ifp;
ifp->if_timer = 0;
callout_stop(&sc->my_autoneg_timer);
callout_stop(&sc->my_watchdog);
MY_CLRBIT(sc, MY_TCRRCR, (MY_RE | MY_TE));
CSR_WRITE_4(sc, MY_IMR, 0x00000000);

4
sys/dev/my/if_myreg.h
View File

@ -372,7 +372,9 @@ struct my_softc {
device_t my_miibus;
/* Add by Surfer 2001/12/2 */
struct mtx my_mtx;
struct callout my_autoneg_timer;
struct callout my_watchdog;
int my_timer;
};
/* Add by Surfer 2001/12/2 */