Convert the PHY drivers to honor the mii_flags passed down and convert

the NIC drivers as well as the PHY drivers to take advantage of the
mii_attach() introduced in r213878 to get rid of certain hacks. For
the most part these were:
- Artificially limiting miibus_{read,write}reg methods to certain PHY
  addresses; we now let mii_attach() only probe the PHY at the desired
  address(es) instead.
- PHY drivers setting MIIF_* flags based on the NIC driver they hang
  off from, partly even based on grabbing and using the softc of the
  parent; we now pass these flags down from the NIC to the PHY drivers
  via mii_attach(). This got us rid of all such hacks except those of
  brgphy() in combination with bce(4) and bge(4), which is way beyond
  what can be expressed with simple flags.

While at it, I took the opportunity to change the NIC drivers to pass
up the error returned by mii_attach() (previously by mii_phy_probe())
and unify the error message used in this case where and as appropriate
as mii_attach() actually can fail for a number of reasons, not just
because of no PHY(s) being present at the expected address(es).

Reviewed by:	jhb, yongari

2 files changed, 4 insertions, 13 deletions

diff --git a/sys/dev/ae/if_ae.c b/sys/dev/ae/if_ae.c
index c47a03e..1a82516 100644
--- a/sys/dev/ae/if_ae.c
+++ b/sys/dev/ae/if_ae.c
@@ -360,9 +360,6 @@ ae_attach(device_t dev)
 	if (error != 0)
 		goto fail;
 
-	/* Set default PHY address. */
-	sc->phyaddr = AE_PHYADDR_DEFAULT;
-
 	ifp = sc->ifp = if_alloc(IFT_ETHER);
 	if (ifp == NULL) {
 		device_printf(dev, "could not allocate ifnet structure.\n");
@@ -390,10 +387,11 @@ ae_attach(device_t dev)
 	/*
 	 * Configure and attach MII bus.
 	 */
-	error = mii_phy_probe(dev, &sc->miibus, ae_mediachange,
-	    ae_mediastatus);
+	error = mii_attach(dev, &sc->miibus, ifp, ae_mediachange,
+	    ae_mediastatus, BMSR_DEFCAPMASK, AE_PHYADDR_DEFAULT,
+	    MII_OFFSET_ANY, 0);
 	if (error != 0) {
-		device_printf(dev, "no PHY found.\n");
+		device_printf(dev, "attaching PHYs failed\n");
 		goto fail;
 	}
 
@@ -813,9 +811,6 @@ ae_miibus_readreg(device_t dev, int phy, int reg)
 	 * Locking is done in upper layers.
 	 */
 
-	if (phy != sc->phyaddr)
-		return (0);
-
 	val = ((reg << AE_MDIO_REGADDR_SHIFT) & AE_MDIO_REGADDR_MASK) |
 	    AE_MDIO_START | AE_MDIO_READ | AE_MDIO_SUP_PREAMBLE |
 	    ((AE_MDIO_CLK_25_4 << AE_MDIO_CLK_SHIFT) & AE_MDIO_CLK_MASK);
@@ -851,9 +846,6 @@ ae_miibus_writereg(device_t dev, int phy, int reg, int val)
 	 * Locking is done in upper layers.
 	 */
 
-	if (phy != sc->phyaddr)
-		return (0);
-
 	aereg = ((reg << AE_MDIO_REGADDR_SHIFT) & AE_MDIO_REGADDR_MASK) |
 	    AE_MDIO_START | AE_MDIO_SUP_PREAMBLE |
 	    ((AE_MDIO_CLK_25_4 << AE_MDIO_CLK_SHIFT) & AE_MDIO_CLK_MASK) |
diff --git a/sys/dev/ae/if_aevar.h b/sys/dev/ae/if_aevar.h
index eaef62e..8623401 100644
--- a/sys/dev/ae/if_aevar.h
+++ b/sys/dev/ae/if_aevar.h
@@ -111,7 +111,6 @@ typedef struct ae_softc	{
 
 	struct mtx		mtx;
 
-	int			phyaddr;
 	uint8_t			eaddr[ETHER_ADDR_LEN];
 	uint8_t			flags;
 	int			if_flags;