Author: yongari
Date: Thu Feb 23 05:10:00 2012
New Revision: 232019
URL: http://svn.freebsd.org/changeset/base/232019
Log:
Give hardware chance to drain active DMA cycles.
Modified:
head/sys/dev/sf/if_sf.c
Modified: head/sys/dev/sf/if_sf.c
==============================================================================
--- head/sys/dev/sf/if_sf.c Thu Feb 23 04:32:41 2012 (r232018)
+++ head/sys/dev/sf/if_sf.c Thu Feb 23 05:10:00 2012 (r232019)
@@ -2329,6 +2329,9 @@ sf_stop(struct sf_softc *sc)
/* Disable Tx/Rx egine. */
csr_write_4(sc, SF_GEN_ETH_CTL, 0);
+ /* Give hardware chance to drain active DMA cycles. */
+ DELAY(1000);
+
csr_write_4(sc, SF_CQ_CONSIDX, 0);
csr_write_4(sc, SF_CQ_PRODIDX, 0);
csr_write_4(sc, SF_RXDQ_ADDR_Q1, 0);
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "[email protected]"
