385153aa98
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
253 lines
6.2 KiB
C
253 lines
6.2 KiB
C
/*-
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* Copyright (c) 2001-2003, Shunsuke Akiyama <akiyama@FreeBSD.org>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* driver for RealTek RTL8150 internal PHY
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/socket.h>
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#include <sys/bus.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/if_media.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include "miidevs.h"
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#include <machine/bus.h>
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#include <dev/mii/ruephyreg.h>
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#include "miibus_if.h"
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static int ruephy_probe(device_t);
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static int ruephy_attach(device_t);
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static device_method_t ruephy_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, ruephy_probe),
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DEVMETHOD(device_attach, ruephy_attach),
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DEVMETHOD(device_detach, mii_phy_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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{ 0, 0 }
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};
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static devclass_t ruephy_devclass;
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static driver_t ruephy_driver = {
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"ruephy",
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ruephy_methods,
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sizeof(struct mii_softc)
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};
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DRIVER_MODULE(ruephy, miibus, ruephy_driver, ruephy_devclass, 0, 0);
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static int ruephy_service(struct mii_softc *, struct mii_data *, int);
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static void ruephy_reset(struct mii_softc *);
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static void ruephy_status(struct mii_softc *);
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/*
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* The RealTek RTL8150 internal PHY doesn't have vendor/device ID
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* registers; rue(4) fakes up a return value of all zeros.
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*/
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static const struct mii_phydesc ruephys[] = {
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{ 0, 0, "RealTek RTL8150 internal media interface" },
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MII_PHY_END
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};
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static int
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ruephy_probe(device_t dev)
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{
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if (strcmp(device_get_name(device_get_parent(device_get_parent(dev))),
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"rue") == 0)
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return (mii_phy_dev_probe(dev, ruephys, BUS_PROBE_DEFAULT));
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return (ENXIO);
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}
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static int
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ruephy_attach(device_t dev)
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{
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struct mii_softc *sc;
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struct mii_attach_args *ma;
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struct mii_data *mii;
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sc = device_get_softc(dev);
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ma = device_get_ivars(dev);
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sc->mii_dev = device_get_parent(dev);
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mii = ma->mii_data;
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LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
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sc->mii_flags = miibus_get_flags(dev);
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sc->mii_inst = mii->mii_instance++;
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sc->mii_phy = ma->mii_phyno;
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sc->mii_service = ruephy_service;
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sc->mii_pdata = mii;
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/*
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* Apparently, we can neither isolate nor do loopback on this PHY.
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*/
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sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP;
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ruephy_reset(sc);
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sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
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device_printf(dev, " ");
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mii_phy_add_media(sc);
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printf("\n");
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MIIBUS_MEDIAINIT(sc->mii_dev);
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return (0);
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}
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static int
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ruephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
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{
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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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int reg;
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switch (cmd) {
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case MII_POLLSTAT:
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break;
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case MII_MEDIACHG:
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/*
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* If the interface is not up, don't do anything.
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*/
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if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
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break;
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mii_phy_setmedia(sc);
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break;
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case MII_TICK:
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/*
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* Is the interface even up?
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*/
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if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
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return (0);
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/*
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* Only used for autonegotiation.
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*/
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if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
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break;
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/*
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* Check to see if we have link. If we do, we don't
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* need to restart the autonegotiation process. Read
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* the MSR twice in case it's latched.
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*/
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reg = PHY_READ(sc, RUEPHY_MII_MSR) |
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PHY_READ(sc, RUEPHY_MII_MSR);
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if (reg & RUEPHY_MSR_LINK)
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break;
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/* Only retry autonegotiation every mii_anegticks seconds. */
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if (sc->mii_ticks <= sc->mii_anegticks)
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break;
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sc->mii_ticks = 0;
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ruephy_reset(sc);
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if (mii_phy_auto(sc) == EJUSTRETURN)
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return (0);
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break;
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}
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/* Update the media status. */
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ruephy_status(sc);
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/* Callback if something changed. */
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mii_phy_update(sc, cmd);
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return (0);
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}
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static void
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ruephy_reset(struct mii_softc *sc)
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{
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mii_phy_reset(sc);
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/*
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* XXX RealTek RTL8150 PHY doesn't set the BMCR properly after
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* XXX reset, which breaks autonegotiation.
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*/
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PHY_WRITE(sc, MII_BMCR, (BMCR_S100 | BMCR_AUTOEN | BMCR_FDX));
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}
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static void
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ruephy_status(struct mii_softc *phy)
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{
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struct mii_data *mii = phy->mii_pdata;
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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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int bmsr, bmcr, msr;
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mii->mii_media_status = IFM_AVALID;
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mii->mii_media_active = IFM_ETHER;
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msr = PHY_READ(phy, RUEPHY_MII_MSR) | PHY_READ(phy, RUEPHY_MII_MSR);
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if (msr & RUEPHY_MSR_LINK)
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mii->mii_media_status |= IFM_ACTIVE;
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bmcr = PHY_READ(phy, MII_BMCR);
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if (bmcr & BMCR_ISO) {
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mii->mii_media_active |= IFM_NONE;
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mii->mii_media_status = 0;
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return;
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}
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bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
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if (bmcr & BMCR_AUTOEN) {
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if ((bmsr & BMSR_ACOMP) == 0) {
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/* Erg, still trying, I guess... */
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mii->mii_media_active |= IFM_NONE;
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return;
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}
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if (msr & RUEPHY_MSR_SPEED100)
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mii->mii_media_active |= IFM_100_TX;
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else
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mii->mii_media_active |= IFM_10_T;
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if (msr & RUEPHY_MSR_DUPLEX)
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mii->mii_media_active |= IFM_FDX;
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else
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mii->mii_media_active |= IFM_HDX;
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} else
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mii->mii_media_active = ife->ifm_media;
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}
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