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Date: Thu, 29 Sep 2011 00:34:32 -0700 From: yxlraid@...il.com To: JBottomley@...allels.com Cc: jack_wang@...sh.com, lucas.demarchi@...fusion.mobi, maciej.trela@...el.com, dan.j.williams@...el.com, linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org, Xiangliang Yu <yuxiangl@...vell.com> Subject: [PATCH 5/8] [SCSI] mvsas: change SL mode0 register value From: Xiangliang Yu <yuxiangl@...vell.com> -- 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@...vell.com> --- drivers/scsi/mvsas/mv_94xx.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/scsi/mvsas/mv_94xx.c b/drivers/scsi/mvsas/mv_94xx.c index ca2b9d9..4d1a8c7 100644 --- a/drivers/scsi/mvsas/mv_94xx.c +++ b/drivers/scsi/mvsas/mv_94xx.c @@ -511,6 +511,14 @@ 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); -- 1.7.4.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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