260 lines
7.2 KiB
C
260 lines
7.2 KiB
C
/* $NetBSD: gentbi.c,v 1.15 2006/03/29 07:05:24 thorpej Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND 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 THE FOUNDATION OR CONTRIBUTORS
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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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* Copyright (c) 1997 Manuel Bouyer. 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Driver for generic ten-bit (1000BASE-SX) interfaces, built into
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* many Gigabit Ethernet chips.
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*
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* All we have to do here is correctly report speed and duplex.
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*/
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#include <sys/cdefs.h>
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/*
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* Driver for generic unknown ten-bit interfaces(1000BASE-{LX,SX}
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* fiber interfaces).
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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/errno.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 <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 "miibus_if.h"
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static int gentbi_probe(device_t);
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static int gentbi_attach(device_t);
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static device_method_t gentbi_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, gentbi_probe),
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DEVMETHOD(device_attach, gentbi_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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DEVMETHOD_END
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};
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static driver_t gentbi_driver = {
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"gentbi",
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gentbi_methods,
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sizeof(struct mii_softc)
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};
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DRIVER_MODULE(gentbi, miibus, gentbi_driver, 0, 0);
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static int gentbi_service(struct mii_softc *, struct mii_data *, int);
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static void gentbi_status(struct mii_softc *);
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static const struct mii_phy_funcs gentbi_funcs = {
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gentbi_service,
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gentbi_status,
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mii_phy_reset
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};
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static int
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gentbi_probe(device_t dev)
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{
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device_t parent;
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struct mii_attach_args *ma;
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int bmsr, extsr;
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parent = device_get_parent(dev);
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ma = device_get_ivars(dev);
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/*
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* We match as a generic TBI if:
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*
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* - There is no media in the BMSR.
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* - EXTSR has only 1000X.
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*/
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bmsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_BMSR);
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if ((bmsr & BMSR_EXTSTAT) == 0 || (bmsr & BMSR_MEDIAMASK) != 0)
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return (ENXIO);
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extsr = MIIBUS_READREG(parent, ma->mii_phyno, MII_EXTSR);
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if (extsr & (EXTSR_1000TFDX|EXTSR_1000THDX))
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return (ENXIO);
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if (extsr & (EXTSR_1000XFDX|EXTSR_1000XHDX)) {
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/*
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* We think this is a generic TBI. Return a match
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* priority higher than ukphy, but lower than what
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* specific drivers will return.
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*/
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device_set_desc(dev, "Generic ten-bit interface");
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return (BUS_PROBE_LOW_PRIORITY);
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}
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return (ENXIO);
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}
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static int
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gentbi_attach(device_t dev)
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{
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struct mii_softc *sc;
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sc = device_get_softc(dev);
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mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &gentbi_funcs, 0);
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PHY_RESET(sc);
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/*
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* Mask out all media in the BMSR. We only are really interested
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* in "auto".
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*/
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sc->mii_capabilities =
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PHY_READ(sc, MII_BMSR) & sc->mii_capmask & ~BMSR_MEDIAMASK;
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if (sc->mii_capabilities & BMSR_EXTSTAT)
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sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
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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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gentbi_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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mii_phy_setmedia(sc);
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break;
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case MII_TICK:
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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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}
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/* Update the media status. */
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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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gentbi_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 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(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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if (bmcr & BMCR_AUTOEN) {
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/*
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* The media status bits are only valid if autonegotiation
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* has completed (or it's disabled).
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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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/*
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* The media is always 1000baseSX. Check the ANLPAR to
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* see if we're doing full-duplex.
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*/
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mii->mii_media_active |= IFM_1000_SX;
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anlpar = PHY_READ(sc, MII_ANLPAR);
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if ((sc->mii_extcapabilities & EXTSR_1000XFDX) != 0 &&
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(anlpar & ANLPAR_X_FD) != 0)
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mii->mii_media_active |=
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IFM_FDX | mii_phy_flowstatus(sc);
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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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