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| author | Pyun YongHyeon <yongari@FreeBSD.org> | 2012-02-23 05:10:00 +0000 |
|---|---|---|
| committer | Pyun YongHyeon <yongari@FreeBSD.org> | 2012-02-23 05:10:00 +0000 |
| commit | 911dd7324dc2817838b304d8680987dc3548c20c (patch) | |
| tree | 38fe00e1432751295262c7c75cbd730c21788a50 /sys/dev/sf/if_sf.c | |
| parent | 41e556b9d11a42e1ba8093f983c42eb8a933b64a (diff) | |
| download | src-911dd7324dc2817838b304d8680987dc3548c20c.tar.gz src-911dd7324dc2817838b304d8680987dc3548c20c.zip | |
Give hardware chance to drain active DMA cycles.
Notes
Notes:
svn path=/head/; revision=232019
Diffstat (limited to 'sys/dev/sf/if_sf.c')
| -rw-r--r-- | sys/dev/sf/if_sf.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/dev/sf/if_sf.c b/sys/dev/sf/if_sf.c index 251f310ae5d9..6a8b49fc53c4 100644 --- a/sys/dev/sf/if_sf.c +++ b/sys/dev/sf/if_sf.c @@ -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); |