linux-kernel - [PATCH 13/37] atl1c: threshold for ASPM is changed based on chip capability

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Date:	Fri, 13 Apr 2012 08:14:38 +0800
From:	xiong <xiong@....qualcomm.com>
To:	<davem@...emloft.net>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
CC:	<qca-linux-team@...lcomm.com>, <nic-devel@...lcomm.com>,
	xiong <xiong@....qualcomm.com>
Subject: [PATCH 13/37] atl1c: threshold for ASPM is changed based on chip capability

threshold setting to control ASPM for diff chips are different.
currently, all gigabit-capability chips have limited-ASPM under
100M throughput.

Signed-off-by: xiong <xiong@....qualcomm.com>
Tested-by: Liu David <dwliu@....qualcomm.com>
---
 drivers/net/ethernet/atheros/atl1c/atl1c_main.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index 18c91b6..8228aa7 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -1084,9 +1084,10 @@ static void atl1c_configure_rx(struct atl1c_adapter *adapter)
 	if (hw->ctrl_flags & ATL1C_RX_IPV6_CHKSUM)
 		rxq_ctrl_data |= IPV6_CHKSUM_CTRL_EN;
 
-	if (hw->ctrl_flags & ATL1C_ASPM_CTRL_MON)
-		rxq_ctrl_data |= (ASPM_THRUPUT_LIMIT_1M &
-			ASPM_THRUPUT_LIMIT_MASK) << ASPM_THRUPUT_LIMIT_SHIFT;
+	/* aspm for gigabit */
+	if (hw->nic_type != athr_l1d_2 && (hw->device_id & 1) != 0)
+		rxq_ctrl_data = FIELD_SETX(rxq_ctrl_data, ASPM_THRUPUT_LIMIT,
+			ASPM_THRUPUT_LIMIT_100M);
 
 	AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data);
 }
-- 
1.7.7

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