From aa117dd14372e1b0bed651af2db1be670b595032 Mon Sep 17 00:00:00 2001 From: Xiangliang Yu Date: Thu, 29 Sep 2011 00:34:32 -0700 Subject: [PATCH] [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 Signed-off-by: James Bottomley --- drivers/scsi/mvsas/mv_94xx.c | 8 ++++++++ 1 file changed, 8 insertions(+) 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); -- 2.34.1