tg3: Add clause 45 register accessor methods

This patch adds clause 45 register access methods.  They will be used in
the following patch.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 46 insertions, 0 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 1c680ff51013..afcc593108ce 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -1162,6 +1162,52 @@ static void tg3_mdio_fini(struct tg3 *tp)
         }
 }
 
+static int tg3_phy_cl45_write(struct tg3 *tp, u32 devad, u32 addr, u32 val)
+{
+        int err;
+
+        err = tg3_writephy(tp, MII_TG3_MMD_CTRL, devad);
+        if (err)
+                goto done;
+
+        err = tg3_writephy(tp, MII_TG3_MMD_ADDRESS, addr);
+        if (err)
+                goto done;
+
+        err = tg3_writephy(tp, MII_TG3_MMD_CTRL,
+                           MII_TG3_MMD_CTRL_DATA_NOINC | devad);
+        if (err)
+                goto done;
+
+        err = tg3_writephy(tp, MII_TG3_MMD_ADDRESS, val);
+
+done:
+        return err;
+}
+
+static int tg3_phy_cl45_read(struct tg3 *tp, u32 devad, u32 addr, u32 *val)
+{
+        int err;
+
+        err = tg3_writephy(tp, MII_TG3_MMD_CTRL, devad);
+        if (err)
+                goto done;
+
+        err = tg3_writephy(tp, MII_TG3_MMD_ADDRESS, addr);
+        if (err)
+                goto done;
+
+        err = tg3_writephy(tp, MII_TG3_MMD_CTRL,
+                           MII_TG3_MMD_CTRL_DATA_NOINC | devad);
+        if (err)
+                goto done;
+
+        err = tg3_readphy(tp, MII_TG3_MMD_ADDRESS, val);
+
+done:
+        return err;
+}
+
 /* tp->lock is held. */
 static inline void tg3_generate_fw_event(struct tg3 *tp)
 {