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authorAndy Fleming <afleming@freescale.com>2008-08-31 16:33:27 -0500
committerBen Warren <biggerbadderben@gmail.com>2008-09-02 21:18:15 -0700
commit2abe361c03b43e6dcf68f54e96b5c05156c49284 (patch)
tree198447e2f30bf205d833695e54b6527fedccb28b /drivers/net/tsec.c
parent75b9d4ae0d69f214eab641caf12ce8af83a39a42 (diff)
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Add SGMII support to the tsec
Adds support for configuring the TBI to talk properly with the SerDes. Signed-off-by: Andy Fleming <afleming@freescale.com> Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Diffstat (limited to 'drivers/net/tsec.c')
-rw-r--r--drivers/net/tsec.c74
1 files changed, 48 insertions, 26 deletions
diff --git a/drivers/net/tsec.c b/drivers/net/tsec.c
index fbbdd3d..f81211a 100644
--- a/drivers/net/tsec.c
+++ b/drivers/net/tsec.c
@@ -216,61 +216,80 @@ int tsec_init(struct eth_device *dev, bd_t * bd)
return (priv->link ? 0 : -1);
}
-/* Write value to the device's PHY through the registers
- * specified in priv, modifying the register specified in regnum.
- * It will wait for the write to be done (or for a timeout to
- * expire) before exiting
- */
-void write_any_phy_reg(struct tsec_private *priv, uint phyid, uint regnum, uint value)
+/* Writes the given phy's reg with value, using the specified MDIO regs */
+static void tsec_local_mdio_write(volatile tsec_t *phyregs, uint addr,
+ uint reg, uint value)
{
- volatile tsec_t *regbase = priv->phyregs;
int timeout = 1000000;
- regbase->miimadd = (phyid << 8) | regnum;
- regbase->miimcon = value;
+ phyregs->miimadd = (addr << 8) | reg;
+ phyregs->miimcon = value;
asm("sync");
timeout = 1000000;
- while ((regbase->miimind & MIIMIND_BUSY) && timeout--) ;
+ while ((phyregs->miimind & MIIMIND_BUSY) && timeout--) ;
}
-/* #define to provide old write_phy_reg functionality without duplicating code */
-#define write_phy_reg(priv, regnum, value) write_any_phy_reg(priv,priv->phyaddr,regnum,value)
+
+/* Provide the default behavior of writing the PHY of this ethernet device */
+#define write_phy_reg(priv, regnum, value) tsec_local_mdio_write(priv->phyregs,priv->phyaddr,regnum,value)
/* Reads register regnum on the device's PHY through the
- * registers specified in priv. It lowers and raises the read
+ * specified registers. It lowers and raises the read
* command, and waits for the data to become valid (miimind
* notvalid bit cleared), and the bus to cease activity (miimind
* busy bit cleared), and then returns the value
*/
-uint read_any_phy_reg(struct tsec_private *priv, uint phyid, uint regnum)
+uint tsec_local_mdio_read(volatile tsec_t *phyregs, uint phyid, uint regnum)
{
uint value;
- volatile tsec_t *regbase = priv->phyregs;
/* Put the address of the phy, and the register
* number into MIIMADD */
- regbase->miimadd = (phyid << 8) | regnum;
+ phyregs->miimadd = (phyid << 8) | regnum;
/* Clear the command register, and wait */
- regbase->miimcom = 0;
+ phyregs->miimcom = 0;
asm("sync");
/* Initiate a read command, and wait */
- regbase->miimcom = MIIM_READ_COMMAND;
+ phyregs->miimcom = MIIM_READ_COMMAND;
asm("sync");
/* Wait for the the indication that the read is done */
- while ((regbase->miimind & (MIIMIND_NOTVALID | MIIMIND_BUSY))) ;
+ while ((phyregs->miimind & (MIIMIND_NOTVALID | MIIMIND_BUSY))) ;
/* Grab the value read from the PHY */
- value = regbase->miimstat;
+ value = phyregs->miimstat;
return value;
}
/* #define to provide old read_phy_reg functionality without duplicating code */
-#define read_phy_reg(priv,regnum) read_any_phy_reg(priv,priv->phyaddr,regnum)
+#define read_phy_reg(priv,regnum) tsec_local_mdio_read(priv->phyregs,priv->phyaddr,regnum)
+
+#define TBIANA_SETTINGS ( \
+ TBIANA_ASYMMETRIC_PAUSE \
+ | TBIANA_SYMMETRIC_PAUSE \
+ | TBIANA_FULL_DUPLEX \
+ )
+
+#define TBICR_SETTINGS ( \
+ TBICR_PHY_RESET \
+ | TBICR_ANEG_ENABLE \
+ | TBICR_FULL_DUPLEX \
+ | TBICR_SPEED1_SET \
+ )
+/* Configure the TBI for SGMII operation */
+static void tsec_configure_serdes(struct tsec_private *priv)
+{
+ tsec_local_mdio_write(priv->phyregs, CFG_TBIPA_VALUE, TBI_ANA,
+ TBIANA_SETTINGS);
+ tsec_local_mdio_write(priv->phyregs, CFG_TBIPA_VALUE, TBI_TBICON,
+ TBICON_CLK_SELECT);
+ tsec_local_mdio_write(priv->phyregs, CFG_TBIPA_VALUE, TBI_CR,
+ TBICR_SETTINGS);
+}
/* Discover which PHY is attached to the device, and configure it
* properly. If the PHY is not recognized, then return 0
@@ -280,12 +299,12 @@ static int init_phy(struct eth_device *dev)
{
struct tsec_private *priv = (struct tsec_private *)dev->priv;
struct phy_info *curphy;
- volatile tsec_t *regs = (volatile tsec_t *)(TSEC_BASE_ADDR);
+ volatile tsec_t *phyregs = priv->phyregs;
+ volatile tsec_t *regs = priv->regs;
/* Assign a Physical address to the TBI */
regs->tbipa = CFG_TBIPA_VALUE;
- regs = (volatile tsec_t *)(TSEC_BASE_ADDR + TSEC_SIZE);
- regs->tbipa = CFG_TBIPA_VALUE;
+ phyregs->tbipa = CFG_TBIPA_VALUE;
asm("sync");
/* Reset MII (due to new addresses) */
@@ -309,6 +328,9 @@ static int init_phy(struct eth_device *dev)
return 0;
}
+ if (regs->ecntrl & ECNTRL_SGMII_MODE)
+ tsec_configure_serdes(priv);
+
priv->phyinfo = curphy;
phy_run_commands(priv, priv->phyinfo->config);
@@ -1700,7 +1722,7 @@ static int tsec_miiphy_read(char *devname, unsigned char addr,
return -1;
}
- ret = (unsigned short)read_any_phy_reg(priv, addr, reg);
+ ret = (unsigned short)tsec_local_mdio_read(priv->phyregs, addr, reg);
*value = ret;
return 0;
@@ -1722,7 +1744,7 @@ static int tsec_miiphy_write(char *devname, unsigned char addr,
return -1;
}
- write_any_phy_reg(priv, addr, reg, value);
+ tsec_local_mdio_write(priv->phyregs, addr, reg, value);
return 0;
}