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| author | yongari <yongari@FreeBSD.org> | 2008-02-29 03:38:12 +0000 |
|---|---|---|
| committer | yongari <yongari@FreeBSD.org> | 2008-02-29 03:38:12 +0000 |
| commit | 31fd8f4296cf6fa92a20171e42e9891d2df49b5c (patch) | |
| tree | ae612a7202c650df910314fddbe1c13059675c30 /sys/dev/msk | |
| parent | 52310eca06bac730a94e6badc26da3678600e145 (diff) | |
| download | FreeBSD-src-31fd8f4296cf6fa92a20171e42e9891d2df49b5c.zip FreeBSD-src-31fd8f4296cf6fa92a20171e42e9891d2df49b5c.tar.gz | |
Workaround GMAC hardware hang of Yukon II on the receipt of pause
frames. This bug seems to happen on certain hardware model/revision
(e.g. 88E8053) but it's not identified which hardwares are affected.
Revision 1.4 of if_mskreg.h was not enough to workaround the bug.
To workaround it, inrease GMAC FIFO threshold by one FIFO word to
flush received pause frames.
Reported by: das, Kirill Nuzhdin < kirill.nuzhdin AT rad dot chem dot msu dot ru >
Tested by: das, Kirill Nuzhdin
Diffstat (limited to 'sys/dev/msk')
| -rw-r--r-- | sys/dev/msk/if_msk.c | 7 | ||||
| -rw-r--r-- | sys/dev/msk/if_mskreg.h | 1 |
2 files changed, 6 insertions, 2 deletions
diff --git a/sys/dev/msk/if_msk.c b/sys/dev/msk/if_msk.c index 2613b81..bb4ba13 100644 --- a/sys/dev/msk/if_msk.c +++ b/sys/dev/msk/if_msk.c @@ -3658,9 +3658,12 @@ msk_init_locked(struct msk_if_softc *sc_if) CSR_WRITE_4(sc, MR_ADDR(sc_if->msk_port, RX_GMF_FL_MSK), GMR_FS_ANY_ERR); - /* Set Rx FIFO flush threshold to 64 bytes. */ + /* + * Set Rx FIFO flush threshold to 64 bytes + 1 FIFO word + * due to hardware hang on receipt of pause frames. + */ CSR_WRITE_4(sc, MR_ADDR(sc_if->msk_port, RX_GMF_FL_THR), - RX_GMF_FL_THR_DEF); + RX_GMF_FL_THR_DEF + 1); /* Configure Tx MAC FIFO. */ CSR_WRITE_4(sc, MR_ADDR(sc_if->msk_port, TX_GMF_CTRL_T), GMF_RST_SET); diff --git a/sys/dev/msk/if_mskreg.h b/sys/dev/msk/if_mskreg.h index 1f8ff7d..ba0d730 100644 --- a/sys/dev/msk/if_mskreg.h +++ b/sys/dev/msk/if_mskreg.h @@ -1818,6 +1818,7 @@ GMR_FS_LONG_ERR | \ GMR_FS_MII_ERR | \ GMR_FS_BAD_FC | \ + GMR_FS_GOOD_FC | \ GMR_FS_UN_SIZE | \ GMR_FS_JABBER) |
