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authorRalph Campbell <ralph.campbell@qlogic.com>2010-06-23 15:58:31 +0000
committerRoland Dreier <rolandd@cisco.com>2010-07-21 11:39:31 -0700
commit2d978a953b874bac418e0b9475edd1b9125281f6 (patch)
tree31896878af7d5619cb93f61ac8c02cf66aef78a7 /drivers/infiniband
parentdd378c2102cf4bf81144db70771d09ecead2cd15 (diff)
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IB/qib: Turn off IB latency mode
Turn off IB latency mode. This improves link quality for slower process chips. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/qib/qib_iba7322.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index 5eedf83..fc14ef8 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -7271,6 +7271,8 @@ static int serdes_7322_init(struct qib_pportdata *ppd)
ibsd_wr_allchans(ppd, 20, (4 << 13), BMASK(15, 13)); /* SDR */
data = qib_read_kreg_port(ppd, krp_serdesctrl);
+ /* Turn off IB latency mode */
+ data &= ~SYM_MASK(IBSerdesCtrl_0, IB_LAT_MODE);
qib_write_kreg_port(ppd, krp_serdesctrl, data |
SYM_MASK(IBSerdesCtrl_0, RXLOSEN));