Add support for the BCM5705 and its ilk. Changes:

- 5705 doesn't support jumbo frames
- Statistics must be read from registers
- RX return ring must be capped at 512 entries
- Omit initialization of certain device blocks
- Acknowledge link change interrupts by setting the 'link changed'
  bit in the status register (used to have no effect)
- Remember to toggle the MI completion bit too
- Set the mbuf low watermark differently (on-chip memory buffers,
  not BSD mbufs)
- Don't enable Ethernet@WireSpeed feature for certain 5705 chip revs
- Add additional PCI IDs for 5705 and 5782 parts
- Add a forgotten 5704 PCI ID

Most changes ripped kicking and screaming from the Broadcom linux driver.
Thanks to Paul Saab for sanity testing. (My lack of sanity has been
confirmed.)

1 files changed, 26 insertions, 0 deletions

diff --git a/sys/dev/mii/brgphy.c b/sys/dev/mii/brgphy.c
index 614d0af..9f6ed9c 100644
--- a/sys/dev/mii/brgphy.c
+++ b/sys/dev/mii/brgphy.c
@@ -54,6 +54,9 @@ __FBSDID("$FreeBSD$");
 #include "miidevs.h"
 
 #include <dev/mii/brgphyreg.h>
+#include <net/if_arp.h>
+#include <machine/bus.h>
+#include <dev/bge/if_bgereg.h>
 
 #include "miibus_if.h"
 
@@ -133,6 +136,12 @@ brgphy_probe(dev)
 		return(0);
 	}
 
+	if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxBROADCOM &&
+	    MII_MODEL(ma->mii_id2) == MII_MODEL_xxBROADCOM_BCM5705) {
+		device_set_desc(dev, MII_STR_xxBROADCOM_BCM5705);
+		return(0);
+	}
+
 	return(ENXIO);
 }
 
@@ -552,6 +561,8 @@ static void
 brgphy_reset(struct mii_softc *sc)
 {
 	u_int32_t	val;
+	struct ifnet	*ifp;
+	struct bge_softc	*bge_sc;
 
 	mii_phy_reset(sc);
 
@@ -570,6 +581,21 @@ brgphy_reset(struct mii_softc *sc)
 		break;
 	}
 
+	ifp = sc->mii_pdata->mii_ifp;
+	bge_sc = ifp->if_softc;
+
+	/*
+	 * Don't enable Ethernet@WireSpeed for the 5700 or the
+	 * 5705 A1 and A2 chips. Make sure we only do this test
+	 * on "bge" NICs, since other drivers may use this same
+	 * PHY subdriver.
+	 */
+	if (strcmp(ifp->if_name, "bge") == 0 &&
+	    (bge_sc->bge_asicrev == BGE_ASICREV_BCM5700 ||
+	    bge_sc->bge_chipid == BGE_CHIPID_BCM5705_A1 ||
+	    bge_sc->bge_chipid == BGE_CHIPID_BCM5705_A2))
+		return;
+
 	/* Enable Ethernet@WireSpeed. */
 	PHY_WRITE(sc, BRGPHY_MII_AUXCTL, 0x7007);
 	val = PHY_READ(sc, BRGPHY_MII_AUXCTL);