[U-Boot] patch to support Xilinx 1000BASE-X phy (GTX)

[Charles Coldwell]

and here it is again, in-line

commit 39695029bc15041c809df3db4ba19bd729c447fa
Author: Charles Coldwell <coldwell at ll.mit.edu>
Date:   Tue Feb 19 08:27:33 2013 -0500

    Changes to support the Xilinx 1000BASE-X phy (GTX/MGT)

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index d0ed766..8a38ccb 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -75,6 +75,10 @@ static int genphy_config_advert(struct phy_device *phydev)
  adv |= ADVERTISE_PAUSE_CAP;
  if (advertise & ADVERTISED_Asym_Pause)
  adv |= ADVERTISE_PAUSE_ASYM;
+ if (advertise & ADVERTISED_1000baseX_Half)
+ adv |= ADVERTISE_1000XHALF;
+ if (advertise & ADVERTISED_1000baseX_Full)
+ adv |= ADVERTISE_1000XFULL;

  if (adv != oldadv) {
  err = phy_write(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE, adv);
@@ -288,6 +292,7 @@ static int genphy_parse_link(struct phy_device *phydev)
  if (mii_reg & BMSR_ANEGCAPABLE) {
  u32 lpa = 0;
  u32 gblpa = 0;
+ u32 estatus = 0;

  /* Check for gigabit capability */
  if (mii_reg & BMSR_ERCAP) {
@@ -327,6 +332,17 @@ static int genphy_parse_link(struct phy_device *phydev)

  } else if (lpa & LPA_10FULL)
  phydev->duplex = DUPLEX_FULL;
+
+ if (mii_reg & BMSR_ESTATEN)
+ estatus = phy_read(phydev, MDIO_DEVAD_NONE, MII_ESTATUS);
+
+ if (estatus & (ESTATUS_1000_XFULL | ESTATUS_1000_XHALF |
+ ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) {
+ phydev->speed = SPEED_1000;
+ if (estatus & (ESTATUS_1000_XFULL | ESTATUS_1000_TFULL))
+ phydev->duplex = DUPLEX_FULL;
+ }
+
  } else {
  u32 bmcr = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR);

@@ -384,6 +400,10 @@ int genphy_config(struct phy_device *phydev)
  features |= SUPPORTED_1000baseT_Full;
  if (val & ESTATUS_1000_THALF)
  features |= SUPPORTED_1000baseT_Half;
+ if (val & ESTATUS_1000_XFULL)
+ features |= SUPPORTED_1000baseX_Full;
+ if (val & ESTATUS_1000_XHALF)
+ features |= SUPPORTED_1000baseX_Full;
  }

  phydev->supported = features;
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index fcb20fe..f6dbdb0 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -580,6 +580,8 @@ enum ethtool_sfeatures_retval_bits {
 #define SUPPORTED_10000baseKX4_Full (1 << 18)
 #define SUPPORTED_10000baseKR_Full (1 << 19)
 #define SUPPORTED_10000baseR_FEC (1 << 20)
+#define SUPPORTED_1000baseX_Half (1 << 21)
+#define SUPPORTED_1000baseX_Full (1 << 22)

 /* Indicates what features are advertised by the interface. */
 #define ADVERTISED_10baseT_Half (1 << 0)
@@ -603,6 +605,8 @@ enum ethtool_sfeatures_retval_bits {
 #define ADVERTISED_10000baseKX4_Full (1 << 18)
 #define ADVERTISED_10000baseKR_Full (1 << 19)
 #define ADVERTISED_10000baseR_FEC (1 << 20)
+#define ADVERTISED_1000baseX_Half (1 << 21)
+#define ADVERTISED_1000baseX_Full (1 << 22)

 /* The following are all involved in forcing a particular link
  * mode for the device for setting things.  When getting the
diff --git a/include/linux/mii.h b/include/linux/mii.h
index 8b92692..66b83d8 100644
--- a/include/linux/mii.h
+++ b/include/linux/mii.h
@@ -115,6 +115,8 @@
 #define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected    */
 #define EXPANSION_RESV 0xffe0 /* Unused...       */

+#define ESTATUS_1000_XFULL 0x8000 /* Can do 1000BX Full */
+#define ESTATUS_1000_XHALF 0x4000 /* Can do 1000BX Half */
 #define ESTATUS_1000_TFULL 0x2000 /* Can do 1000BT Full */
 #define ESTATUS_1000_THALF 0x1000 /* Can do 1000BT Half */


On Tue, Feb 19, 2013 at 8:35 AM, Charles Coldwell <coldwell at gmail.com> wrote:
> Attached is a (small) patch that enabled me to use the 1000BASE-X phy
> on the Xilinx Virtex-6 hard TEMAC (i.e. the one that uses the GTX
> transceivers).
>
> --
> Charles M. Coldwell, W1CMC
> Belmont, Massachusetts, New England
> "Turn on, log in, tune out"



--
Charles M. Coldwell, W1CMC
Belmont, Massachusetts, New England
"Turn on, log in, tune out"