Add a driver for generic HomePNA PHYs. Currently supports the HomePNA
portion of the AMD Am79c901.
This commit is contained in:
thorpej
parent
9fe2378664
commit
158cb83996
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@ -1,4 +1,4 @@
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# $NetBSD: files.mii,v 1.26 2001/08/24 17:54:32 thorpej Exp $
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# $NetBSD: files.mii,v 1.27 2001/08/25 03:21:38 thorpej Exp $
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file dev/mii/mii.c mii
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@ -86,6 +86,10 @@ device dmphy: mii_phy
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attach dmphy at mii
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file dev/mii/dmphy.c dmphy
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device pnaphy: mii_phy
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attach pnaphy at mii
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file dev/mii/pnaphy.c pnaphy
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device ukphy: mii_phy, ukphy_subr
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attach ukphy at mii
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file dev/mii/ukphy.c ukphy
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@ -0,0 +1,233 @@
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/* $NetBSD: pnaphy.c,v 1.1 2001/08/25 03:21:38 thorpej Exp $ */
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/*
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* Copyright 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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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 for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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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 THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Driver for generic HomePNA 1.0 PHYs.
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*
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* HomePNA 1.0 PHYs are pretty simple -- they support exactly one
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* media type, and don't do autonegotiation.
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*
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* HomePNA PHYs often have vendor-specific registers for tuning
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* the network connection, but we don't deal with any of that
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* at all.
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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/device.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 <net/if.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 <dev/mii/miidevs.h>
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int pnaphymatch(struct device *, struct cfdata *, void *);
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void pnaphyattach(struct device *, struct device *, void *);
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struct cfattach pnaphy_ca = {
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sizeof(struct mii_softc), pnaphymatch, pnaphyattach,
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mii_phy_detach, mii_phy_activate
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};
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int pnaphy_service(struct mii_softc *, struct mii_data *, int);
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void pnaphy_status(struct mii_softc *);
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const struct mii_phy_funcs pnaphy_funcs = {
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pnaphy_service, pnaphy_status, mii_phy_reset,
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};
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const struct mii_phydesc pnaphys[] = {
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{ MII_OUI_yyAMD, MII_MODEL_yyAMD_79c901home,
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MII_STR_yyAMD_79c901home },
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{ 0, 0,
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NULL },
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};
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int
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pnaphymatch(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct mii_attach_args *ma = aux;
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if (mii_phy_match(ma, pnaphys) != NULL) {
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/*
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* Match higher than ukphy, but lower than a specific
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* driver would match.
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*/
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return (2);
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}
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return (0);
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}
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void
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pnaphyattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct mii_softc *sc = (struct mii_softc *)self;
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struct mii_attach_args *ma = aux;
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struct mii_data *mii = ma->mii_data;
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const struct mii_phydesc *mpd;
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mpd = mii_phy_match(ma, pnaphys);
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printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
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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_funcs = &pnaphy_funcs;
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sc->mii_pdata = mii;
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sc->mii_flags = mii->mii_flags;
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sc->mii_anegticks = 5;
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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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printf("%s: ", sc->mii_dev.dv_xname);
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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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mii_phy_add_media(sc);
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printf("\n");
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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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mii_phy_setmedia(sc);
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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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if (mii_phy_tick(sc) == EJUSTRETURN)
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return (0);
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break;
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case MII_DOWN:
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mii_phy_down(sc);
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return (0);
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}
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/* Update the media status. */
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mii_phy_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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void
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pnaphy_status(sc)
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struct mii_softc *sc;
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{
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struct mii_data *mii = sc->mii_pdata;
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struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
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int bmsr, bmcr;
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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(sc, MII_BMSR) | PHY_READ(sc, 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(sc, 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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/*
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* On HomePNA PHYs, the current media is always the selected
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* media.
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*
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* XXX May not be the case w/ HomePNA 2.
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*/
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mii->mii_media_active = ife->ifm_media;
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}
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