New PHY driver for the internal PHY found in the AX88790. There's a

number of quirks for this device, and this implements just the basics.
The 2.5s powerdown recommended in the datasheet will be next...

1 files changed, 207 insertions, 0 deletions

diff --git a/sys/dev/mii/axphy.c b/sys/dev/mii/axphy.c
new file mode 100644
index 0000000..21ac6f0
--- /dev/null
+++ b/sys/dev/mii/axphy.c
@@ -0,0 +1,207 @@
+/*-
+ * Copyright (c) 2009, M. Warner Losh
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * driver for internal phy in the AX88x9x chips.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/socket.h>
+#include <sys/bus.h>
+
+#include <net/if.h>
+#include <net/if_media.h>
+
+#include <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+#include "miidevs.h"
+
+#include <dev/mii/axphyreg.h>
+
+#include "miibus_if.h"
+
+static int 	axphy_probe(device_t dev);
+static int 	axphy_attach(device_t dev);
+
+static device_method_t axphy_methods[] = {
+	/* device interface */
+	DEVMETHOD(device_probe,		axphy_probe),
+	DEVMETHOD(device_attach,	axphy_attach),
+	DEVMETHOD(device_detach,	mii_phy_detach),
+	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
+	{ 0, 0 }
+};
+
+static devclass_t axphy_devclass;
+
+static driver_t axphy_driver = {
+	"axphy",
+	axphy_methods,
+	sizeof(struct mii_softc)
+};
+
+DRIVER_MODULE(axphy, miibus, axphy_driver, axphy_devclass, 0, 0);
+
+static int	axphy_service(struct mii_softc *, struct mii_data *, int);
+static void	axphy_status(struct mii_softc *);
+
+static const struct mii_phydesc axphys[] = {
+	MII_PHY_DESC(ASIX, AX88X9X),
+	MII_PHY_END
+};
+
+static int
+axphy_probe(device_t dev)
+{
+
+	return (mii_phy_dev_probe(dev, axphys, BUS_PROBE_DEFAULT));
+}
+
+static int
+axphy_attach(device_t dev)
+{
+	struct mii_softc *sc;
+	struct mii_attach_args *ma;
+	struct mii_data *mii;
+
+	sc = device_get_softc(dev);
+	ma = device_get_ivars(dev);
+	sc->mii_dev = device_get_parent(dev);
+	mii = device_get_softc(sc->mii_dev);
+	LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
+
+	sc->mii_inst = mii->mii_instance;
+	sc->mii_phy = ma->mii_phyno;
+	sc->mii_service = axphy_service;
+	sc->mii_pdata = mii;
+	sc->mii_flags |= MIIF_NOISOLATE;
+	mii->mii_instance++;
+
+	mii_phy_reset(sc);
+
+	sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
+	device_printf(dev, " ");
+	mii_phy_add_media(sc);
+	printf("\n");
+
+	MIIBUS_MEDIAINIT(sc->mii_dev);
+	mii_phy_setmedia(sc);
+
+	return (0);
+}
+
+static int
+axphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
+{
+	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
+	int reg;
+
+	switch (cmd) {
+	case MII_POLLSTAT:
+		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
+			return (0);
+		break;
+
+	case MII_MEDIACHG:
+		if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
+			reg = PHY_READ(sc, MII_BMCR);
+			PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
+			return (0);
+		}
+
+		/*
+		 * If the interface is not up, don't do anything.
+		 */
+		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
+			break;
+
+		mii_phy_setmedia(sc);
+		break;
+
+	case MII_TICK:
+		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
+			return (0);
+		if (mii_phy_tick(sc) == EJUSTRETURN)
+			return (0);
+		break;
+	}
+
+	/* Update the media status. */
+	axphy_status(sc);
+
+	/* Callback if something changed. */
+	mii_phy_update(sc, cmd);
+	return (0);
+}
+
+static void
+axphy_status(struct mii_softc *sc)
+{
+	struct mii_data *mii = sc->mii_pdata;
+	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
+	int bmsr, bmcr;
+
+	mii->mii_media_status = IFM_AVALID;
+	mii->mii_media_active = IFM_ETHER;
+
+	bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
+	if (bmsr & BMSR_LINK)
+		mii->mii_media_status |= IFM_ACTIVE;
+
+	bmcr = PHY_READ(sc, MII_BMCR);
+	if (bmcr & BMCR_ISO) {
+		mii->mii_media_active |= IFM_NONE;
+		mii->mii_media_status = 0;
+		return;
+	}
+
+	if (bmcr & BMCR_LOOP)
+		mii->mii_media_active |= IFM_LOOP;
+
+	if (bmcr & BMCR_AUTOEN) {
+		if ((bmsr & BMSR_ACOMP) == 0) {
+			mii->mii_media_active |= IFM_NONE;
+			return;
+		}
+
+#if 0
+		scr = PHY_READ(sc, MII_AXPHY_SCR);
+		if (scr & SCR_S100)
+			mii->mii_media_active |= IFM_100_TX;
+		else
+			mii->mii_media_active |= IFM_10_T;
+		if (scr & SCR_FDX)
+			mii->mii_media_active |= IFM_FDX;
+#endif
+	} else
+		mii->mii_media_active = ife->ifm_media;
+}