8e5d93dbb4
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
307 lines
8.3 KiB
C
307 lines
8.3 KiB
C
/*-
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* Copyright (c) 1997, 1998, 1999
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* Bill Paul <wpaul@ctr.columbia.edu>. 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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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 8139 internal PHYs
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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/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 <pci/if_rlreg.h>
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#include "miibus_if.h"
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struct rlphy_softc {
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struct mii_softc sc_mii; /* generic PHY */
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int sc_is_RTL8201L; /* is an external RTL8201L PHY */
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};
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static int rlphy_probe(device_t);
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static int rlphy_attach(device_t);
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static device_method_t rlphy_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, rlphy_probe),
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DEVMETHOD(device_attach, rlphy_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 rlphy_devclass;
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static driver_t rlphy_driver = {
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"rlphy",
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rlphy_methods,
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sizeof(struct rlphy_softc)
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};
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DRIVER_MODULE(rlphy, miibus, rlphy_driver, rlphy_devclass, 0, 0);
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static int rlphy_service(struct mii_softc *, struct mii_data *, int);
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static void rlphy_status(struct mii_softc *);
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/*
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* RealTek internal PHYs don't have vendor/device ID registers;
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* re(4) and rl(4) fake up a return value of all zeros.
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*/
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static const struct mii_phydesc rlintphys[] = {
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{ 0, 0, "RealTek internal media interface" },
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MII_PHY_END
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};
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static const struct mii_phydesc rlphys[] = {
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MII_PHY_DESC(REALTEK, RTL8201L),
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MII_PHY_DESC(ICPLUS, IP101),
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MII_PHY_END
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};
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static int
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rlphy_probe(device_t dev)
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{
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const char *nic;
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int rv;
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rv = mii_phy_dev_probe(dev, rlphys, BUS_PROBE_DEFAULT);
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if (rv <= 0)
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return (rv);
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nic = device_get_name(device_get_parent(device_get_parent(dev)));
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if (strcmp(nic, "rl") == 0 || strcmp(nic, "re") == 0)
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return (mii_phy_dev_probe(dev, rlintphys, BUS_PROBE_DEFAULT));
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return (ENXIO);
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}
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static int
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rlphy_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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struct rlphy_softc *rsc;
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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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/*
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* Check whether we're the RTL8201L PHY and remember so the status
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* routine can query the proper register for speed detection.
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*/
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rsc = (struct rlphy_softc *)sc;
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if (mii_phy_dev_probe(dev, rlphys, 0) == 0)
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rsc->sc_is_RTL8201L++;
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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 = rlphy_service;
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sc->mii_pdata = mii;
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/*
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* The RealTek PHY can never be isolated.
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*/
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sc->mii_flags |= MIIF_NOISOLATE;
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#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
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MII_MEDIA_100_TX);
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mii_phy_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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#undef ADD
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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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rlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
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{
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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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* The RealTek PHY's autonegotiation doesn't need to be
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* kicked; it continues in the background.
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*/
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break;
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}
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/* Update the media status. */
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rlphy_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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rlphy_status(struct mii_softc *phy)
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{
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struct rlphy_softc *rsc =(struct rlphy_softc *)phy;
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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, anlpar;
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mii->mii_media_status = IFM_AVALID;
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mii->mii_media_active = IFM_ETHER;
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bmsr = PHY_READ(phy, MII_BMSR) | PHY_READ(phy, MII_BMSR);
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if (bmsr & BMSR_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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if (bmcr & BMCR_LOOP)
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mii->mii_media_active |= IFM_LOOP;
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if (bmcr & BMCR_AUTOEN) {
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/*
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* NWay autonegotiation takes the highest-order common
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* bit of the ANAR and ANLPAR (i.e. best media advertised
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* both by us and our link partner).
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*/
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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 ((anlpar = PHY_READ(phy, MII_ANAR) &
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PHY_READ(phy, MII_ANLPAR))) {
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if (anlpar & ANLPAR_TX_FD)
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mii->mii_media_active |= IFM_100_TX|IFM_FDX;
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else if (anlpar & ANLPAR_T4)
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mii->mii_media_active |= IFM_100_T4|IFM_HDX;
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else if (anlpar & ANLPAR_TX)
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mii->mii_media_active |= IFM_100_TX|IFM_HDX;
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else if (anlpar & ANLPAR_10_FD)
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mii->mii_media_active |= IFM_10_T|IFM_FDX;
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else if (anlpar & ANLPAR_10)
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mii->mii_media_active |= IFM_10_T|IFM_HDX;
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else
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mii->mii_media_active |= IFM_NONE;
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return;
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}
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/*
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* If the other side doesn't support NWAY, then the
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* best we can do is determine if we have a 10Mbps or
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* 100Mbps link. There's no way to know if the link
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* is full or half duplex, so we default to half duplex
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* and hope that the user is clever enough to manually
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* change the media settings if we're wrong.
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*/
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/*
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* The RealTek PHY supports non-NWAY link speed
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* detection, however it does not report the link
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* detection results via the ANLPAR or BMSR registers.
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* (What? RealTek doesn't do things the way everyone
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* else does? I'm just shocked, shocked I tell you.)
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* To determine the link speed, we have to do one
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* of two things:
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*
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* - If this is a standalone RealTek RTL8201(L) PHY,
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* we can determine the link speed by testing bit 0
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* in the magic, vendor-specific register at offset
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* 0x19.
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*
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* - If this is a RealTek MAC with integrated PHY, we
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* can test the 'SPEED10' bit of the MAC's media status
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* register.
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*/
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if (rsc->sc_is_RTL8201L) {
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if (PHY_READ(phy, 0x0019) & 0x01)
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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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} else {
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if (PHY_READ(phy, RL_MEDIASTAT) &
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RL_MEDIASTAT_SPEED10)
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mii->mii_media_active |= IFM_10_T;
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else
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mii->mii_media_active |= IFM_100_TX;
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}
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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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