In embedded environments, ethtool may not be available to toggle between
auto negotiation on/off.
Add a module parameter to control auto negotiation for these situations.
Signed-off-by: Shyam Sundar S K <shyam-sundar....@amd.com>
---
drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c | 28 +++++++++++++++------
1 file changed, 21 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
index 5b14fc758c2f..2ad016ee36ad 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
@@ -124,6 +124,10 @@
#include "xgbe.h"
#include "xgbe-common.h"
+static int autoneg = 1;
+module_param(autoneg, int, 0644);
+MODULE_PARM_DESC(autoneg, " Enable/disable autonegotiation support (0=disable,
1=enable (or any non-zero value))");
+
#define XGBE_PHY_PORT_SPEED_100 BIT(0)
#define XGBE_PHY_PORT_SPEED_1000 BIT(1)
#define XGBE_PHY_PORT_SPEED_2500 BIT(2)
@@ -1867,6 +1871,9 @@ static enum xgbe_an_mode xgbe_phy_an_mode(struct
xgbe_prv_data *pdata)
{
struct xgbe_phy_data *phy_data = pdata->phy_data;
+ if (!autoneg)
+ return XGBE_AN_MODE_NONE;
+
/* A KR re-driver will always require CL73 AN */
if (phy_data->redrv)
return XGBE_AN_MODE_CL73_REDRV;
@@ -3159,7 +3166,8 @@ static int xgbe_phy_init(struct xgbe_prv_data *pdata)
switch (phy_data->port_mode) {
/* Backplane support */
case XGBE_PORT_MODE_BACKPLANE:
- XGBE_SET_SUP(lks, Autoneg);
+ if (autoneg)
+ XGBE_SET_SUP(lks, Autoneg);
XGBE_SET_SUP(lks, Pause);
XGBE_SET_SUP(lks, Asym_Pause);
XGBE_SET_SUP(lks, Backplane);
@@ -3188,7 +3196,8 @@ static int xgbe_phy_init(struct xgbe_prv_data *pdata)
/* MDIO 1GBase-T support */
case XGBE_PORT_MODE_1000BASE_T:
- XGBE_SET_SUP(lks, Autoneg);
+ if (autoneg)
+ XGBE_SET_SUP(lks, Autoneg);
XGBE_SET_SUP(lks, Pause);
XGBE_SET_SUP(lks, Asym_Pause);
XGBE_SET_SUP(lks, TP);
@@ -3206,7 +3215,8 @@ static int xgbe_phy_init(struct xgbe_prv_data *pdata)
/* MDIO Base-X support */
case XGBE_PORT_MODE_1000BASE_X:
- XGBE_SET_SUP(lks, Autoneg);
+ if (autoneg)
+ XGBE_SET_SUP(lks, Autoneg);
XGBE_SET_SUP(lks, Pause);
XGBE_SET_SUP(lks, Asym_Pause);
XGBE_SET_SUP(lks, FIBRE);
@@ -3218,7 +3228,8 @@ static int xgbe_phy_init(struct xgbe_prv_data *pdata)
/* MDIO NBase-T support */
case XGBE_PORT_MODE_NBASE_T:
- XGBE_SET_SUP(lks, Autoneg);
+ if (autoneg)
+ XGBE_SET_SUP(lks, Autoneg);
XGBE_SET_SUP(lks, Pause);
XGBE_SET_SUP(lks, Asym_Pause);
XGBE_SET_SUP(lks, TP);
@@ -3240,7 +3251,8 @@ static int xgbe_phy_init(struct xgbe_prv_data *pdata)
/* 10GBase-T support */
case XGBE_PORT_MODE_10GBASE_T:
- XGBE_SET_SUP(lks, Autoneg);
+ if (autoneg)
+ XGBE_SET_SUP(lks, Autoneg);
XGBE_SET_SUP(lks, Pause);
XGBE_SET_SUP(lks, Asym_Pause);
XGBE_SET_SUP(lks, TP);
@@ -3262,7 +3274,8 @@ static int xgbe_phy_init(struct xgbe_prv_data *pdata)
/* 10GBase-R support */
case XGBE_PORT_MODE_10GBASE_R:
- XGBE_SET_SUP(lks, Autoneg);
+ if (autoneg)
+ XGBE_SET_SUP(lks, Autoneg);
XGBE_SET_SUP(lks, Pause);
XGBE_SET_SUP(lks, Asym_Pause);
XGBE_SET_SUP(lks, FIBRE);
@@ -3279,7 +3292,8 @@ static int xgbe_phy_init(struct xgbe_prv_data *pdata)
/* SFP support */
case XGBE_PORT_MODE_SFP:
- XGBE_SET_SUP(lks, Autoneg);
+ if (autoneg)
+ XGBE_SET_SUP(lks, Autoneg);
XGBE_SET_SUP(lks, Pause);
XGBE_SET_SUP(lks, Asym_Pause);
XGBE_SET_SUP(lks, TP);
--
2.25.1
