[SCSI] mvsas: change SL mode0 register value

-- change connection behavior
-- set bit8 to 1 for performance tuning
-- set bit0 to 0 to enable retry for no_dest reject case.

Signed-off-by: Xiangliang Yu <yuxiangl@marvell.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/scsi/mvsas/mv_94xx.c b/drivers/scsi/mvsas/mv_94xx.c
index ce4e970bcedf..016d3d41f23a 100644
--- a/drivers/scsi/mvsas/mv_94xx.c
+++ b/drivers/scsi/mvsas/mv_94xx.c
@@ -510,6 +510,14 @@ static int __devinit mvs_94xx_init(struct mvs_info *mvi)
         tmp |= CINT_PHY_MASK;
         mw32(MVS_INT_MASK, tmp);
 
+        /* change the connection open-close behavior (bit 9)
+         * set bit8 to 1 for performance tuning */
+        tmp = mvs_cr32(mvi, CMD_SL_MODE0);
+        tmp |= 0x00000300;
+        /* set bit0 to 0 to enable retry for no_dest reject case */
+        tmp &= 0xFFFFFFFE;
+        mvs_cw32(mvi, CMD_SL_MODE0, tmp);
+
         /* Enable SRS interrupt */
         mw32(MVS_INT_MASK_SRS_0, 0xFFFF);