Add a homePNA PHY driver. This is really only a stub: MII-based homePNA
PHYs tend to look like 10mbps PHYs with no autonegotiation. This allows us to display the proper media type and link status however.
This commit is contained in:
Bill Paul
parent
337771f919
commit
b54acb744c
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=66129
@ -207,6 +207,7 @@ dev/mii/mii_physubr.c optional miibus
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dev/mii/mlphy.c optional miibus
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dev/mii/nsphy.c optional miibus
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dev/mii/pnphy.c optional miibus
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dev/mii/pnaphy.c optional miibus
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dev/mii/rlphy.c optional miibus
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dev/mii/tlphy.c optional miibus
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dev/mii/ukphy.c optional miibus
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282
sys/dev/mii/pnaphy.c
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282
sys/dev/mii/pnaphy.c
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@ -0,0 +1,282 @@
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/*
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* Copyright (c) 2000 Berkeley Software Design, Inc.
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* Copyright (c) 1997, 1998, 1999, 2000
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* Bill Paul <wpaul@osd.bsdi.com>. 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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* $FreeBSD$
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*/
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/*
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* driver for homePNA PHYs
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* This is really just a stub that allows us to identify homePNA-based
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* transceicers and display the link status. MII-based homePNA PHYs
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* only support one media type and no autonegotiation. If we were
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* really clever, we could tweak some of the vendor-specific registers
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* to optimize the link.
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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/socket.h>
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#include <sys/errno.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <machine/clock.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include <dev/mii/miidevs.h>
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#include "miibus_if.h"
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#if !defined(lint)
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static const char rcsid[] =
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"$FreeBSD$";
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#endif
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static int pnaphy_probe __P((device_t));
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static int pnaphy_attach __P((device_t));
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static int pnaphy_detach __P((device_t));
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static device_method_t pnaphy_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, pnaphy_probe),
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DEVMETHOD(device_attach, pnaphy_attach),
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DEVMETHOD(device_detach, pnaphy_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 pnaphy_devclass;
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static driver_t pnaphy_driver = {
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"pnaphy",
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pnaphy_methods,
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sizeof(struct mii_softc)
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};
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DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, pnaphy_devclass, 0, 0);
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int pnaphy_service __P((struct mii_softc *, struct mii_data *, int));
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static int
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pnaphy_probe(dev)
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device_t dev;
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{
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struct mii_attach_args *ma;
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ma = device_get_ivars(dev);
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if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_AMD &&
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MII_MODEL(ma->mii_id2) == MII_MODEL_AMD_79c978) {
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device_set_desc(dev, MII_STR_AMD_79c978);
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return(0);
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}
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return(ENXIO);
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}
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static int
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pnaphy_attach(dev)
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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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const char *sep = "";
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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 = device_get_softc(sc->mii_dev);
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LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
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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 = pnaphy_service;
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sc->mii_pdata = mii;
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mii->mii_instance++;
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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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#define PRINT(s) printf("%s%s", sep, s); sep = ", "
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mii_phy_reset(sc);
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sc->mii_capabilities =
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PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
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device_printf(dev, " ");
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if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
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printf("no media present");
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else {
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_homePNA, 0, sc->mii_inst), 0);
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PRINT("HomePNA");
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}
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
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BMCR_ISO);
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printf("\n");
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#undef ADD
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#undef PRINT
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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 pnaphy_detach(dev)
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device_t dev;
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{
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struct mii_softc *sc;
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struct mii_data *mii;
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sc = device_get_softc(dev);
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mii = device_get_softc(device_get_parent(dev));
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sc->mii_dev = NULL;
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LIST_REMOVE(sc, mii_list);
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return(0);
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}
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int
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pnaphy_service(sc, mii, cmd)
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struct mii_softc *sc;
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struct mii_data *mii;
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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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/*
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* If we're not polling our PHY instance, just return.
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*/
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if (IFM_INST(ife->ifm_media) != sc->mii_inst)
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return (0);
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break;
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case MII_MEDIACHG:
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/*
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* If the media indicates a different PHY instance,
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* isolate ourselves.
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*/
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if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
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reg = PHY_READ(sc, MII_BMCR);
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PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
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return (0);
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}
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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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switch (IFM_SUBTYPE(ife->ifm_media)) {
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case IFM_AUTO:
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case IFM_10_T:
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case IFM_100_TX:
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case IFM_100_T4:
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return (EINVAL);
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default:
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/*
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* BMCR data is stored in the ifmedia entry.
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*/
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PHY_WRITE(sc, MII_ANAR,
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mii_anar(ife->ifm_media));
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PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
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}
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break;
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case MII_TICK:
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/*
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* If we're not currently selected, just return.
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*/
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if (IFM_INST(ife->ifm_media) != sc->mii_inst)
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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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return (0);
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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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* 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 BMSR twice in case it's latched.
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*/
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reg = PHY_READ(sc, MII_BMSR) |
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PHY_READ(sc, MII_BMSR);
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if (reg & BMSR_LINK)
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return (0);
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/*
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* Only retry autonegotiation every 5 seconds.
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*/
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if (++sc->mii_ticks != 5)
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return (0);
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sc->mii_ticks = 0;
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mii_phy_reset(sc);
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if (mii_phy_auto(sc, 0) == 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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ukphy_status(sc);
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if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T)
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mii->mii_media_active = IFM_ETHER|IFM_homePNA;
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/* Callback if something changed. */
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if (sc->mii_active != mii->mii_media_active || cmd == MII_MEDIACHG) {
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MIIBUS_STATCHG(sc->mii_dev);
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sc->mii_active = mii->mii_media_active;
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}
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return (0);
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}
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@ -5,6 +5,6 @@ KMOD = miibus
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SRCS = mii.c mii_physubr.c ukphy.c ukphy_subr.c bus_if.h pci_if.h
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SRCS += miibus_if.h device_if.h miibus_if.c exphy.c nsphy.c
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SRCS += mlphy.c tlphy.c rlphy.c amphy.c dcphy.c pnphy.c
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SRCS += brgphy.c xmphy.c
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SRCS += brgphy.c xmphy.c pnaphy.c
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.include <bsd.kmod.mk>
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