diff options
| -rw-r--r-- | sys/dev/dc/if_dc.c | 42 |
1 files changed, 20 insertions, 22 deletions
diff --git a/sys/dev/dc/if_dc.c b/sys/dev/dc/if_dc.c index 5f12b7a..13aaf28 100644 --- a/sys/dev/dc/if_dc.c +++ b/sys/dev/dc/if_dc.c @@ -3135,16 +3135,19 @@ dc_intr(void *arg) struct dc_softc *sc; struct ifnet *ifp; u_int32_t status; + int curpkts, n; sc = arg; if (sc->suspended) return; - if ((CSR_READ_4(sc, DC_ISR) & DC_INTRS) == 0) - return; - DC_LOCK(sc); + status = CSR_READ_4(sc, DC_ISR); + if (status == 0xFFFFFFFF || (status & DC_INTRS) == 0) { + DC_UNLOCK(sc); + return; + } ifp = sc->dc_ifp; #ifdef DEVICE_POLLING if (ifp->if_capenable & IFCAP_POLLING) { @@ -3152,26 +3155,16 @@ dc_intr(void *arg) return; } #endif - - /* Suppress unwanted interrupts */ - if (!(ifp->if_flags & IFF_UP)) { - if (CSR_READ_4(sc, DC_ISR) & DC_INTRS) - dc_stop(sc); - DC_UNLOCK(sc); - return; - } - /* Disable interrupts. */ CSR_WRITE_4(sc, DC_IMR, 0x00000000); - while (((status = CSR_READ_4(sc, DC_ISR)) & DC_INTRS) && - status != 0xFFFFFFFF && - (ifp->if_drv_flags & IFF_DRV_RUNNING)) { - + for (n = 16; n > 0; n--) { + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) + break; + /* Ack interrupts. */ CSR_WRITE_4(sc, DC_ISR, status); if (status & DC_ISR_RX_OK) { - int curpkts; curpkts = ifp->if_ipackets; dc_rxeof(sc); if (curpkts == ifp->if_ipackets) { @@ -3196,7 +3189,6 @@ dc_intr(void *arg) if ((status & DC_ISR_RX_WATDOGTIMEO) || (status & DC_ISR_RX_NOBUF)) { - int curpkts; curpkts = ifp->if_ipackets; dc_rxeof(sc); if (curpkts == ifp->if_ipackets) { @@ -3205,17 +3197,23 @@ dc_intr(void *arg) } } + if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) + dc_start_locked(ifp); + if (status & DC_ISR_BUS_ERR) { dc_reset(sc); dc_init_locked(sc); + DC_UNLOCK(sc); + return; } + status = CSR_READ_4(sc, DC_ISR); + if (status == 0xFFFFFFFF || (status & DC_INTRS) == 0) + break; } /* Re-enable interrupts. */ - CSR_WRITE_4(sc, DC_IMR, DC_INTRS); - - if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) - dc_start_locked(ifp); + if (ifp->if_drv_flags & IFF_DRV_RUNNING) + CSR_WRITE_4(sc, DC_IMR, DC_INTRS); DC_UNLOCK(sc); } |
