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-rw-r--r--drivers/net/gianfar.c27
-rw-r--r--drivers/net/gianfar.h6
-rw-r--r--drivers/net/gianfar_mii.c55
3 files changed, 77 insertions, 11 deletions
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 1b854bf07b09..d7a1a58de766 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -130,6 +130,9 @@ static int gfar_remove(struct platform_device *pdev);
static void free_skb_resources(struct gfar_private *priv);
static void gfar_set_multi(struct net_device *dev);
static void gfar_set_hash_for_addr(struct net_device *dev, u8 *addr);
+static void gfar_configure_serdes(struct net_device *dev);
+extern int gfar_local_mdio_write(struct gfar_mii *regs, int mii_id, int regnum, u16 value);
+extern int gfar_local_mdio_read(struct gfar_mii *regs, int mii_id, int regnum);
#ifdef CONFIG_GFAR_NAPI
static int gfar_poll(struct net_device *dev, int *budget);
#endif
@@ -451,6 +454,9 @@ static int init_phy(struct net_device *dev)
phydev = phy_connect(dev, phy_id, &adjust_link, 0, interface);
+ if (interface == PHY_INTERFACE_MODE_SGMII)
+ gfar_configure_serdes(dev);
+
if (IS_ERR(phydev)) {
printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
return PTR_ERR(phydev);
@@ -465,6 +471,27 @@ static int init_phy(struct net_device *dev)
return 0;
}
+static void gfar_configure_serdes(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+ struct gfar_mii __iomem *regs =
+ (void __iomem *)&priv->regs->gfar_mii_regs;
+
+ /* Initialise TBI i/f to communicate with serdes (lynx phy) */
+
+ /* Single clk mode, mii mode off(for aerdes communication) */
+ gfar_local_mdio_write(regs, TBIPA_VALUE, MII_TBICON, TBICON_CLK_SELECT);
+
+ /* Supported pause and full-duplex, no half-duplex */
+ gfar_local_mdio_write(regs, TBIPA_VALUE, MII_ADVERTISE,
+ ADVERTISE_1000XFULL | ADVERTISE_1000XPAUSE |
+ ADVERTISE_1000XPSE_ASYM);
+
+ /* ANEG enable, restart ANEG, full duplex mode, speed[1] set */
+ gfar_local_mdio_write(regs, TBIPA_VALUE, MII_BMCR, BMCR_ANENABLE |
+ BMCR_ANRESTART | BMCR_FULLDPLX | BMCR_SPEED1000);
+}
+
static void init_registers(struct net_device *dev)
{
struct gfar_private *priv = netdev_priv(dev);
diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h
index 39e9e321fcbc..d8e779c102fa 100644
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -136,6 +136,12 @@ extern const char gfar_driver_version[];
#define MIIMCFG_RESET 0x80000000
#define MIIMIND_BUSY 0x00000001
+/* TBI register addresses */
+#define MII_TBICON 0x11
+
+/* TBICON register bit fields */
+#define TBICON_CLK_SELECT 0x0020
+
/* MAC register bits */
#define MACCFG1_SOFT_RESET 0x80000000
#define MACCFG1_RESET_RX_MC 0x00080000
diff --git a/drivers/net/gianfar_mii.c b/drivers/net/gianfar_mii.c
index bcc6b82f4a33..5dd34a1a7b89 100644
--- a/drivers/net/gianfar_mii.c
+++ b/drivers/net/gianfar_mii.c
@@ -43,13 +43,18 @@
#include "gianfar.h"
#include "gianfar_mii.h"
-/* Write value to the PHY at mii_id at register regnum,
- * on the bus, waiting until the write is done before returning.
- * All PHY configuration is done through the TSEC1 MIIM regs */
-int gfar_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 value)
+/*
+ * Write value to the PHY at mii_id at register regnum,
+ * on the bus attached to the local interface, which may be different from the
+ * generic mdio bus (tied to a single interface), waiting until the write is
+ * done before returning. This is helpful in programming interfaces like
+ * the TBI which control interfaces like onchip SERDES and are always tied to
+ * the local mdio pins, which may not be the same as system mdio bus, used for
+ * controlling the external PHYs, for example.
+ */
+int gfar_local_mdio_write(struct gfar_mii *regs, int mii_id,
+ int regnum, u16 value)
{
- struct gfar_mii __iomem *regs = (void __iomem *)bus->priv;
-
/* Set the PHY address and the register address we want to write */
gfar_write(&regs->miimadd, (mii_id << 8) | regnum);
@@ -63,12 +68,19 @@ int gfar_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 value)
return 0;
}
-/* Read the bus for PHY at addr mii_id, register regnum, and
- * return the value. Clears miimcom first. All PHY
- * configuration has to be done through the TSEC1 MIIM regs */
-int gfar_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
+/*
+ * Read the bus for PHY at addr mii_id, register regnum, and
+ * return the value. Clears miimcom first. All PHY operation
+ * done on the bus attached to the local interface,
+ * which may be different from the generic mdio bus
+ * This is helpful in programming interfaces like
+ * the TBI which, inturn, control interfaces like onchip SERDES
+ * and are always tied to the local mdio pins, which may not be the
+ * same as system mdio bus, used for controlling the external PHYs, for eg.
+ */
+int gfar_local_mdio_read(struct gfar_mii *regs, int mii_id, int regnum)
+
{
- struct gfar_mii __iomem *regs = (void __iomem *)bus->priv;
u16 value;
/* Set the PHY address and the register address we want to read */
@@ -88,6 +100,27 @@ int gfar_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
return value;
}
+/* Write value to the PHY at mii_id at register regnum,
+ * on the bus, waiting until the write is done before returning.
+ * All PHY configuration is done through the TSEC1 MIIM regs */
+int gfar_mdio_write(struct mii_bus *bus, int mii_id, int regnum, u16 value)
+{
+ struct gfar_mii __iomem *regs = (void __iomem *)bus->priv;
+
+ /* Write to the local MII regs */
+ return(gfar_local_mdio_write(regs, mii_id, regnum, value));
+}
+
+/* Read the bus for PHY at addr mii_id, register regnum, and
+ * return the value. Clears miimcom first. All PHY
+ * configuration has to be done through the TSEC1 MIIM regs */
+int gfar_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
+{
+ struct gfar_mii __iomem *regs = (void __iomem *)bus->priv;
+
+ /* Read the local MII regs */
+ return(gfar_local_mdio_read(regs, mii_id, regnum));
+}
/* Reset the MIIM registers, and wait for the bus to free */
int gfar_mdio_reset(struct mii_bus *bus)