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Message-ID: <1475064078-22310-2-git-send-email-Raju.Lakkaraju@microsemi.com>
Date: Wed, 28 Sep 2016 17:31:17 +0530
From: Raju Lakkaraju <Raju.Lakkaraju@...rosemi.com>
To: <netdev@...r.kernel.org>
CC: <f.fainelli@...il.com>, <Allan.Nielsen@...rosemi.com>,
<andrew@...n.ch>, Raju Lakkaraju <Raju.Lakkaraju@...rosemi.com>
Subject: [PATCH net-next 1/2] net: phy: Add Wake-on-LAN driver for Microsemi PHYs.
From: Raju Lakkaraju <Raju.Lakkaraju@...rosemi.com>
Wake-on-LAN (WoL) is an Ethernet networking standard that allows
a computer/device to be turned on or awakened by a network message.
VSC8531 PHY can support this feature configure by driver set function.
WoL status get by driver get function.
Tested on Beaglebone Black with VSC 8531 PHY.
Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@...rosemi.com>
---
drivers/net/phy/mscc.c | 132 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 132 insertions(+)
diff --git a/drivers/net/phy/mscc.c b/drivers/net/phy/mscc.c
index d350deb..ca6ea23 100644
--- a/drivers/net/phy/mscc.c
+++ b/drivers/net/phy/mscc.c
@@ -11,6 +11,7 @@
#include <linux/mdio.h>
#include <linux/mii.h>
#include <linux/phy.h>
+#include <linux/netdevice.h>
enum rgmii_rx_clock_delay {
RGMII_RX_CLK_DELAY_0_2_NS = 0,
@@ -35,6 +36,7 @@ enum rgmii_rx_clock_delay {
#define MII_VSC85XX_INT_MASK 25
#define MII_VSC85XX_INT_MASK_MASK 0xa000
+#define MII_VSC85XX_INT_MASK_WOL 0x0040
#define MII_VSC85XX_INT_STATUS 26
#define MSCC_EXT_PAGE_ACCESS 31
@@ -46,6 +48,19 @@ enum rgmii_rx_clock_delay {
#define RGMII_RX_CLK_DELAY_MASK 0x0070
#define RGMII_RX_CLK_DELAY_POS 4
+#define MSCC_PHY_WOL_LOWER_MAC_ADDR 21
+#define MSCC_PHY_WOL_MID_MAC_ADDR 22
+#define MSCC_PHY_WOL_UPPER_MAC_ADDR 23
+#define MSCC_PHY_WOL_LOWER_PASSWD 24
+#define MSCC_PHY_WOL_MID_PASSWD 25
+#define MSCC_PHY_WOL_UPPER_PASSWD 26
+
+#define MSCC_PHY_WOL_MAC_CONTROL 27
+#define EDGE_RATE_CNTL_POS 5
+#define EDGE_RATE_CNTL_MASK 0x00E0
+#define SECURE_ON_ENABLE 0x8000
+#define SECURE_ON_PASSWD_LEN_4 0x4000
+
/* Microsemi PHY ID's */
#define PHY_ID_VSC8531 0x00070570
#define PHY_ID_VSC8541 0x00070770
@@ -58,6 +73,119 @@ static int vsc85xx_phy_page_set(struct phy_device *phydev, u8 page)
return rc;
}
+static int vsc85xx_wol_set(struct phy_device *phydev,
+ struct ethtool_wolinfo *wol)
+{
+ int rc;
+ u16 reg_val;
+ struct ethtool_wolinfo *wol_conf = wol;
+
+ mutex_lock(&phydev->lock);
+ rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_EXTENDED_2);
+ if (rc != 0)
+ goto out_unlock;
+
+ if (wol->wolopts & WAKE_MAGIC) {
+ /* Store the device address for the magic packet */
+ reg_val = phydev->attached_dev->dev_addr[4] << 8;
+ reg_val |= phydev->attached_dev->dev_addr[5];
+ phy_write(phydev, MSCC_PHY_WOL_LOWER_MAC_ADDR, reg_val);
+ reg_val = phydev->attached_dev->dev_addr[2] << 8;
+ reg_val |= phydev->attached_dev->dev_addr[3];
+ phy_write(phydev, MSCC_PHY_WOL_MID_MAC_ADDR, reg_val);
+ reg_val = phydev->attached_dev->dev_addr[0] << 8;
+ reg_val |= phydev->attached_dev->dev_addr[1];
+ phy_write(phydev, MSCC_PHY_WOL_UPPER_MAC_ADDR, reg_val);
+ } else {
+ phy_write(phydev, MSCC_PHY_WOL_LOWER_MAC_ADDR, 0);
+ phy_write(phydev, MSCC_PHY_WOL_MID_MAC_ADDR, 0);
+ phy_write(phydev, MSCC_PHY_WOL_UPPER_MAC_ADDR, 0);
+ }
+
+ reg_val = phy_read(phydev, MSCC_PHY_WOL_MAC_CONTROL);
+ if (wol_conf->wolopts & WAKE_MAGICSECURE)
+ reg_val |= SECURE_ON_ENABLE;
+ else
+ reg_val &= ~SECURE_ON_ENABLE;
+ phy_write(phydev, MSCC_PHY_WOL_MAC_CONTROL, reg_val);
+
+ if (wol_conf->wolopts & WAKE_MAGICSECURE) {
+ reg_val = wol_conf->sopass[4] << 8;
+ reg_val |= wol_conf->sopass[5];
+ phy_write(phydev, MSCC_PHY_WOL_LOWER_PASSWD, reg_val);
+ reg_val = wol_conf->sopass[2] << 8;
+ reg_val |= wol_conf->sopass[3];
+ phy_write(phydev, MSCC_PHY_WOL_MID_PASSWD, reg_val);
+ reg_val = wol_conf->sopass[0] << 8;
+ reg_val |= wol_conf->sopass[1];
+ phy_write(phydev, MSCC_PHY_WOL_UPPER_PASSWD, reg_val);
+ } else {
+ phy_write(phydev, MSCC_PHY_WOL_LOWER_PASSWD, 0);
+ phy_write(phydev, MSCC_PHY_WOL_MID_PASSWD, 0);
+ phy_write(phydev, MSCC_PHY_WOL_UPPER_PASSWD, 0);
+ }
+
+ rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_STANDARD);
+ if (rc != 0)
+ goto out_unlock;
+
+ if (wol->wolopts & WAKE_MAGIC) {
+ /* Enable the WOL interrupt */
+ reg_val = phy_read(phydev, MII_VSC85XX_INT_MASK);
+ reg_val |= MII_VSC85XX_INT_MASK_WOL;
+ rc = phy_write(phydev, MII_VSC85XX_INT_MASK, reg_val);
+ if (rc != 0)
+ goto out_unlock;
+ } else {
+ /* Disable the WOL interrupt */
+ reg_val = phy_read(phydev, MII_VSC85XX_INT_MASK);
+ reg_val &= (~MII_VSC85XX_INT_MASK_WOL);
+ rc = phy_write(phydev, MII_VSC85XX_INT_MASK, reg_val);
+ if (rc != 0)
+ goto out_unlock;
+ }
+ /* Clear WOL iterrupt status */
+ reg_val = phy_read(phydev, MII_VSC85XX_INT_STATUS);
+
+out_unlock:
+ mutex_unlock(&phydev->lock);
+
+ return rc;
+}
+
+static void vsc85xx_wol_get(struct phy_device *phydev,
+ struct ethtool_wolinfo *wol)
+{
+ int rc;
+ u16 reg_val;
+ struct ethtool_wolinfo *wol_conf = wol;
+
+ mutex_lock(&phydev->lock);
+ rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_EXTENDED_2);
+ if (rc != 0)
+ goto out_unlock;
+
+ reg_val = phy_read(phydev, MSCC_PHY_WOL_MAC_CONTROL);
+ if (reg_val & SECURE_ON_ENABLE)
+ wol_conf->wolopts |= WAKE_MAGICSECURE;
+ if (wol_conf->wolopts & WAKE_MAGICSECURE) {
+ reg_val = phy_read(phydev, MSCC_PHY_WOL_LOWER_PASSWD);
+ wol_conf->sopass[5] = reg_val & 0x00ff;
+ wol_conf->sopass[4] = (reg_val & 0xff00) >> 8;
+ reg_val = phy_read(phydev, MSCC_PHY_WOL_MID_PASSWD);
+ wol_conf->sopass[3] = reg_val & 0x00ff;
+ wol_conf->sopass[2] = (reg_val & 0xff00) >> 8;
+ reg_val = phy_read(phydev, MSCC_PHY_WOL_UPPER_PASSWD);
+ wol_conf->sopass[1] = reg_val & 0x00ff;
+ wol_conf->sopass[0] = (reg_val & 0xff00) >> 8;
+ }
+
+ rc = vsc85xx_phy_page_set(phydev, MSCC_PHY_PAGE_STANDARD);
+
+out_unlock:
+ mutex_unlock(&phydev->lock);
+}
+
static int vsc85xx_mac_if_set(struct phy_device *phydev,
phy_interface_t interface)
{
@@ -177,6 +305,8 @@ static struct phy_driver vsc85xx_driver[] = {
.config_intr = &vsc85xx_config_intr,
.suspend = &genphy_suspend,
.resume = &genphy_resume,
+ .set_wol = &vsc85xx_wol_set,
+ .get_wol = &vsc85xx_wol_get,
},
{
.phy_id = PHY_ID_VSC8541,
@@ -193,6 +323,8 @@ static struct phy_driver vsc85xx_driver[] = {
.config_intr = &vsc85xx_config_intr,
.suspend = &genphy_suspend,
.resume = &genphy_resume,
+ .set_wol = &vsc85xx_wol_set,
+ .get_wol = &vsc85xx_wol_get,
}
};
--
2.7.4
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