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Date: Wed, 1 Jan 2014 11:06:41 +0200
From: Yaniv Rosner <yanivr@...adcom.com>
To: David Miller <davem@...emloft.net>
CC: netdev <netdev@...r.kernel.org>,
Yaniv Rosner <yanivr@...adcom.com>,
Ariel Elior <ariele@...adcom.com>
Subject: [PATCH net 1/5] bnx2x: Fix 578xx-KR 1G link
Fix a problem where 578xx-KR is unable to get link when connected to 1G link
partner. Two fixes were required:
One was to force CL37 sync_status low to prevent Warpcore from getting stuck in
CL73 parallel detect loop while link partner is sending.
Second fix was to enable auto-detect mode, thus allowing the Warpcore to select
the higher speed protocol between 10G-KR (over CL73), or go down to 1G over CL73
when there's indication for it.
Signed-off-by: Yaniv Rosner <yanivr@...adcom.com>
Signed-off-by: Ariel Elior <ariele@...adcom.com>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c | 13 +++++++++++++
drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h | 1 +
2 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
index 20dcc02..efbf729 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
@@ -3865,6 +3865,19 @@ static void bnx2x_warpcore_enable_AN_KR(struct bnx2x_phy *phy,
bnx2x_warpcore_enable_AN_KR2(phy, params, vars);
} else {
+ /* Enable Auto-Detect to support 1G over CL37 as well */
+ bnx2x_cl45_write(bp, phy, MDIO_WC_DEVAD,
+ MDIO_WC_REG_SERDESDIGITAL_CONTROL1000X1, 0x10);
+
+ /* Force cl48 sync_status LOW to avoid getting stuck in CL73
+ * parallel-detect loop when CL73 and CL37 are enabled.
+ */
+ CL22_WR_OVER_CL45(bp, phy, MDIO_REG_BANK_AER_BLOCK,
+ MDIO_AER_BLOCK_AER_REG, 0);
+ bnx2x_cl45_write(bp, phy, MDIO_WC_DEVAD,
+ MDIO_WC_REG_RXB_ANA_RX_CONTROL_PCI, 0x0800);
+ bnx2x_set_aer_mmd(params, phy);
+
bnx2x_disable_kr2(params, vars, phy);
}
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
index 3efbb35..14ffb6e 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_reg.h
@@ -7179,6 +7179,7 @@ Theotherbitsarereservedandshouldbezero*/
#define MDIO_WC_REG_RX1_PCI_CTRL 0x80ca
#define MDIO_WC_REG_RX2_PCI_CTRL 0x80da
#define MDIO_WC_REG_RX3_PCI_CTRL 0x80ea
+#define MDIO_WC_REG_RXB_ANA_RX_CONTROL_PCI 0x80fa
#define MDIO_WC_REG_XGXSBLK2_UNICORE_MODE_10G 0x8104
#define MDIO_WC_REG_XGXS_STATUS3 0x8129
#define MDIO_WC_REG_PAR_DET_10G_STATUS 0x8130
--
1.7.1
--
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