265 lines
7.2 KiB
C
265 lines
7.2 KiB
C
/* $NetBSD: urlphy.c,v 1.21 2007/12/29 19:34:56 dyoung Exp $ */
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/*
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* Copyright (c) 2001, 2002
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* Shingo WATANABE <nabe@nabechan.org>. 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. 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 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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/*
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* driver for Realtek RL8150L internal phy
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: urlphy.c,v 1.21 2007/12/29 19:34:56 dyoung Exp $");
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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/socket.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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#include <dev/mii/urlphyreg.h>
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#ifdef URLPHY_DEBUG
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#define DPRINTF(x) if (urlphydebug) printf x
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#define DPRINTFN(n,x) if (urlphydebug>(n)) printf x
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int urlphydebug = URLPHY_DEBUG;
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#else
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#define DPRINTF(x)
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#define DPRINTFN(n,x)
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#endif
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static int urlphy_match(struct device *, struct cfdata *, void *);
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static void urlphy_attach(struct device *, struct device *, void *);
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CFATTACH_DECL(urlphy, sizeof(struct mii_softc),
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urlphy_match, urlphy_attach, mii_phy_detach, mii_phy_activate);
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static int urlphy_service(struct mii_softc *, struct mii_data *, int);
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static void urlphy_status(struct mii_softc *);
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static const struct mii_phy_funcs urlphy_funcs = {
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urlphy_service, urlphy_status, mii_phy_reset,
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};
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static int
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urlphy_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct mii_attach_args *ma = aux;
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/*
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* RTL8150 reports OUT == 0, MODEL == 0
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*/
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if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 &&
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MII_MODEL(ma->mii_id2) != 0)
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return (0);
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/*
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* Make sure the parent is an 'url' device.
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*/
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if (!device_is_a(parent, "url"))
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return(0);
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return (10);
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}
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static void
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urlphy_attach(struct device *parent, struct device *self, void *aux)
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{
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struct mii_softc *sc = device_private(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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aprint_naive(": Media interface\n");
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aprint_normal(": Realtek RTL8150L internal media interface\n");
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DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__));
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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 = &urlphy_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 = MII_ANEGTICKS_GIGE;
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/* Don't do loopback on this PHY. */
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sc->mii_flags |= MIIF_NOLOOP;
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/* Don't do isolate on this PHY. */
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sc->mii_flags |= MIIF_NOISOLATE;
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if (mii->mii_instance != 0) {
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aprint_error("%s: ignoring this PHY, non-zero instance\n",
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sc->mii_dev.dv_xname);
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return;
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}
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PHY_RESET(sc);
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sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
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aprint_normal("%s: ", sc->mii_dev.dv_xname);
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if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
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aprint_error("no media present");
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else
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mii_phy_add_media(sc);
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aprint_normal("\n");
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if (!pmf_device_register(self, NULL, mii_phy_resume))
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aprint_error_dev(self, "couldn't establish power handler\n");
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}
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static int
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urlphy_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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DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__));
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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 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 the interface is not up, don't do anything. */
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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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/* Just bail now if the interface is down. */
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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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* If we're not doing autonegotiation, we don't need to do
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* any extra work here. However, we need to check the link
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* status so we can generate an announcement if the status
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* changes.
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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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/* Read the status register twice; MSR_LINK is latch-low. */
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reg = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR);
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if (reg & URLPHY_MSR_LINK)
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return (0);
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/*
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* Only retry autonegotiation every N seconds.
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*/
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KASSERT(sc->mii_anegticks != 0);
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if (++sc->mii_ticks <= sc->mii_anegticks)
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return (0);
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sc->mii_ticks = 0;
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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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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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static void
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urlphy_status(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 msr, bmsr, bmcr;
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DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__));
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mii->mii_media_status = IFM_AVALID;
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mii->mii_media_active = IFM_ETHER;
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/*
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* The link status bit is not exist in the BMSR register,
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* so we need to read the MSR register to get link status.
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*/
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msr = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR);
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if (msr & URLPHY_MSR_LINK)
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mii->mii_media_status |= IFM_ACTIVE;
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DPRINTF(("%s: %s: link %s\n", sc->mii_dev.dv_xname, __func__,
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mii->mii_media_status & IFM_ACTIVE ? "up" : "down"));
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bmcr = PHY_READ(sc, MII_BMCR);
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if (bmcr & BMCR_AUTOEN) {
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bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
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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 & URLPHY_MSR_SPEED_100)
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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 & URLPHY_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 = ife->ifm_media;
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}
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