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Message-Id: <20200325152209.3428-3-olteanv@gmail.com>
Date: Wed, 25 Mar 2020 17:22:01 +0200
From: Vladimir Oltean <olteanv@...il.com>
To: andrew@...n.ch, f.fainelli@...il.com, vivien.didelot@...il.com,
davem@...emloft.net, jakub.kicinski@...ronome.com
Cc: murali.policharla@...adcom.com, stephen@...workplumber.org,
jiri@...nulli.us, idosch@...sch.org, kuba@...nel.org,
nikolay@...ulusnetworks.com, netdev@...r.kernel.org
Subject: [PATCH v2 net-next 02/10] net: phy: bcm7xx: Add jumbo frame configuration to PHY
From: Murali Krishna Policharla <murali.policharla@...adcom.com>
Add API to configure jumbo frame settings in PHY during initial PHY
configuration.
Signed-off-by: Murali Krishna Policharla <murali.policharla@...adcom.com>
Reviewed-by: Scott Branden <scott.branden@...adcom.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
drivers/net/phy/bcm-phy-lib.c | 28 ++++++++++++++++++++++++++++
drivers/net/phy/bcm-phy-lib.h | 1 +
drivers/net/phy/bcm7xxx.c | 4 ++++
include/linux/brcmphy.h | 1 +
4 files changed, 34 insertions(+)
diff --git a/drivers/net/phy/bcm-phy-lib.c b/drivers/net/phy/bcm-phy-lib.c
index e0d3310957ff..a26c80e13b43 100644
--- a/drivers/net/phy/bcm-phy-lib.c
+++ b/drivers/net/phy/bcm-phy-lib.c
@@ -423,6 +423,34 @@ int bcm_phy_28nm_a0b0_afe_config_init(struct phy_device *phydev)
}
EXPORT_SYMBOL_GPL(bcm_phy_28nm_a0b0_afe_config_init);
+int bcm_phy_enable_jumbo(struct phy_device *phydev)
+{
+ int val = 0, ret = 0;
+
+ ret = phy_write(phydev, MII_BCM54XX_AUX_CTL,
+ MII_BCM54XX_AUXCTL_SHDWSEL_MISC);
+ if (ret < 0)
+ return ret;
+
+ val = phy_read(phydev, MII_BCM54XX_AUX_CTL);
+
+ /* Enable extended length packet reception */
+ val |= MII_BCM54XX_AUXCTL_ACTL_EXT_PKT_LEN;
+ ret = phy_write(phydev, MII_BCM54XX_AUX_CTL, val);
+
+ if (ret < 0)
+ return ret;
+
+ val = phy_read(phydev, MII_BCM54XX_ECR);
+
+ /* Enable 10K byte packet length reception */
+ val |= BIT(0);
+ ret = phy_write(phydev, MII_BCM54XX_ECR, val);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(bcm_phy_enable_jumbo);
+
MODULE_DESCRIPTION("Broadcom PHY Library");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Broadcom Corporation");
diff --git a/drivers/net/phy/bcm-phy-lib.h b/drivers/net/phy/bcm-phy-lib.h
index c86fb9d1240c..129df819be8c 100644
--- a/drivers/net/phy/bcm-phy-lib.h
+++ b/drivers/net/phy/bcm-phy-lib.h
@@ -65,5 +65,6 @@ void bcm_phy_get_stats(struct phy_device *phydev, u64 *shadow,
struct ethtool_stats *stats, u64 *data);
void bcm_phy_r_rc_cal_reset(struct phy_device *phydev);
int bcm_phy_28nm_a0b0_afe_config_init(struct phy_device *phydev);
+int bcm_phy_enable_jumbo(struct phy_device *phydev);
#endif /* _LINUX_BCM_PHY_LIB_H */
diff --git a/drivers/net/phy/bcm7xxx.c b/drivers/net/phy/bcm7xxx.c
index af8eabe7a6d4..692048d86ab1 100644
--- a/drivers/net/phy/bcm7xxx.c
+++ b/drivers/net/phy/bcm7xxx.c
@@ -178,6 +178,10 @@ static int bcm7xxx_28nm_config_init(struct phy_device *phydev)
break;
}
+ if (ret)
+ return ret;
+
+ ret = bcm_phy_enable_jumbo(phydev);
if (ret)
return ret;
diff --git a/include/linux/brcmphy.h b/include/linux/brcmphy.h
index b475e7f20d28..19bd86019e93 100644
--- a/include/linux/brcmphy.h
+++ b/include/linux/brcmphy.h
@@ -119,6 +119,7 @@
#define MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL 0x00
#define MII_BCM54XX_AUXCTL_ACTL_TX_6DB 0x0400
#define MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA 0x0800
+#define MII_BCM54XX_AUXCTL_ACTL_EXT_PKT_LEN 0x4000
#define MII_BCM54XX_AUXCTL_SHDWSEL_MISC 0x07
#define MII_BCM54XX_AUXCTL_SHDWSEL_MISC_WIRESPEED_EN 0x0010
--
2.17.1
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