svn commit: r217062 - head/sys/arm/at91

[John Baldwin]

Author: jhb
Date: Thu Jan  6 19:32:00 2011
New Revision: 217062
URL: http://svn.freebsd.org/changeset/base/217062

Log:
  - Use macbstart_locked() directly instead of deferring it to a task.
  - Expand locking scope in interrupt handler.
  - Flesh out the detach routine.
  
  Reviewed by:  cognet

Modified:
  head/sys/arm/at91/if_macb.c

Modified: head/sys/arm/at91/if_macb.c
==============================================================================
--- head/sys/arm/at91/if_macb.c Thu Jan  6 19:17:29 2011        (r217061)
+++ head/sys/arm/at91/if_macb.c Thu Jan  6 19:32:00 2011        (r217062)
@@ -137,7 +137,6 @@ macb_watchdog(struct macb_softc *sc);
 
 static int macb_intr_rx_locked(struct macb_softc *sc, int count);
 static void macb_intr_task(void *arg, int pending __unused);
-static void    macb_tx_task(void *arg, int pending __unused);
 static void macb_intr(void *xsc);
 
 static void
@@ -533,7 +532,7 @@ macb_watchdog(struct macb_softc *sc)
        ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
        macbinit_locked(sc);
        if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
-       taskqueue_enqueue(sc->sc_tq, &sc->sc_tx_task);
+               macbstart_locked(ifp);
 }
 
 
@@ -837,6 +836,7 @@ macb_intr(void *xsc)
                return;
        }
 
+       MACB_LOCK(sc);
        status = read_4(sc, EMAC_ISR);
 
        while (status) {
@@ -846,16 +846,15 @@ macb_intr(void *xsc)
                }
 
                if (status & TCOMP_INTERRUPT) {
-                       MACB_LOCK(sc);
                        macb_tx_cleanup(sc);
-                       MACB_UNLOCK(sc);
                }
 
                status = read_4(sc, EMAC_ISR);
        }
 
        if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
-       taskqueue_enqueue(sc->sc_tq, &sc->sc_tx_task);
+               macbstart_locked(ifp);
+       MACB_UNLOCK(sc);
 }
 
 static inline int
@@ -1026,16 +1025,6 @@ macbstart(struct ifnet *ifp)
 
 
 static void
-macb_tx_task(void *arg, int pending __unused)
-{
-       struct ifnet *ifp;
-
-       ifp = (struct ifnet *)arg;
-       macbstart(ifp);
-}
-
-
-static void
 macbstop(struct macb_softc *sc)
 {
        struct ifnet *ifp = sc->ifp;
@@ -1392,7 +1381,6 @@ macb_attach(device_t dev)
        sc->if_flags = ifp->if_flags;
 
        TASK_INIT(&sc->sc_intr_task, 0, macb_intr_task, sc);
-       TASK_INIT(&sc->sc_tx_task, 0, macb_tx_task, ifp);
 
        sc->sc_tq = taskqueue_create_fast("macb_taskq", M_WAITOK,
            taskqueue_thread_enqueue, &sc->sc_tq);
@@ -1434,8 +1422,18 @@ macb_detach(device_t dev)
        struct macb_softc *sc;
 
        sc = device_get_softc(dev);
+       ether_ifdetach(sc->ifp);
+       MACB_LOCK(sc);
        macbstop(sc);
+       MACB_UNLOCK(sc);
+       callout_drain(&sc->tick_ch);
+       bus_teardown_intr(dev, sc->irq_res, sc->intrhand);
+       taskqueue_drain(sc->sc_tq, &sc->sc_intr_task);
+       taskqueue_free(sc->sc_tq);
        macb_deactivate(dev);
+       bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
+       bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->mem_res);
+       MACB_LOCK_DESTROY(sc);
 
        return (0);
 }
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