718cf2ccb9
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
266 lines
6.3 KiB
C
266 lines
6.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2006 Benno Rice. 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Driver for the SEEQ 80220 and 84220.
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* (Originally developed for the internal PHY on the SMSC LAN91C111.)
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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/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 <sys/malloc.h>
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#include <machine/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 smcphy_probe(device_t);
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static int smcphy_attach(device_t);
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static int smcphy_service(struct mii_softc *, struct mii_data *, int);
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static void smcphy_reset(struct mii_softc *);
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static void smcphy_auto(struct mii_softc *, int);
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static void smcphy_status(struct mii_softc *);
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static device_method_t smcphy_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, smcphy_probe),
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DEVMETHOD(device_attach, smcphy_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 devclass_t smcphy_devclass;
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static driver_t smcphy_driver = {
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"smcphy",
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smcphy_methods,
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sizeof(struct mii_softc)
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};
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DRIVER_MODULE(smcphy, miibus, smcphy_driver, smcphy_devclass, 0, 0);
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static const struct mii_phydesc smcphys[] = {
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MII_PHY_DESC(SEEQ, 80220),
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MII_PHY_DESC(SEEQ, 84220),
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MII_PHY_END
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};
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static const struct mii_phy_funcs smcphy80220_funcs = {
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smcphy_service,
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smcphy_status,
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mii_phy_reset
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};
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static const struct mii_phy_funcs smcphy_funcs = {
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smcphy_service,
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smcphy_status,
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smcphy_reset
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};
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static int
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smcphy_probe(device_t dev)
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{
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return (mii_phy_dev_probe(dev, smcphys, BUS_PROBE_DEFAULT));
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}
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static int
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smcphy_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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const struct mii_phy_funcs *mpf;
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sc = device_get_softc(dev);
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ma = device_get_ivars(dev);
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if (MII_MODEL(ma->mii_id2) == MII_MODEL_SEEQ_80220)
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mpf = &smcphy80220_funcs;
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else
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mpf = &smcphy_funcs;
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mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, mpf, 1);
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mii_phy_setmedia(sc);
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return (0);
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}
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static int
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smcphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
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{
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struct ifmedia_entry *ife;
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int reg;
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ife = mii->mii_media.ifm_cur;
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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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switch (IFM_SUBTYPE(ife->ifm_media)) {
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case IFM_AUTO:
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smcphy_auto(sc, ife->ifm_media);
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break;
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default:
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mii_phy_setmedia(sc);
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break;
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}
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break;
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case MII_TICK:
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if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
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break;
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}
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/* I have no idea why BMCR_ISO gets set. */
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reg = PHY_READ(sc, MII_BMCR);
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if (reg & BMCR_ISO) {
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PHY_WRITE(sc, MII_BMCR, reg & ~BMCR_ISO);
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}
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reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
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if (reg & BMSR_LINK) {
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sc->mii_ticks = 0;
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break;
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}
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if (++sc->mii_ticks <= MII_ANEGTICKS) {
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break;
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}
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sc->mii_ticks = 0;
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PHY_RESET(sc);
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smcphy_auto(sc, ife->ifm_media);
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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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smcphy_reset(struct mii_softc *sc)
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{
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u_int bmcr;
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int timeout;
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PHY_WRITE(sc, MII_BMCR, BMCR_RESET);
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for (timeout = 2; timeout > 0; timeout--) {
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DELAY(50000);
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bmcr = PHY_READ(sc, MII_BMCR);
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if ((bmcr & BMCR_RESET) == 0)
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break;
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}
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if (bmcr & BMCR_RESET)
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device_printf(sc->mii_dev, "reset failed\n");
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PHY_WRITE(sc, MII_BMCR, 0x3000);
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/* Mask interrupts, we poll instead. */
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PHY_WRITE(sc, 0x1e, 0xffc0);
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}
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static void
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smcphy_auto(struct mii_softc *sc, int media)
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{
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uint16_t anar;
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anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) | ANAR_CSMA;
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if ((media & IFM_FLOW) != 0 || (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
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anar |= ANAR_FC;
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PHY_WRITE(sc, MII_ANAR, anar);
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/* Apparently this helps. */
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anar = PHY_READ(sc, MII_ANAR);
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PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
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}
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static void
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smcphy_status(struct mii_softc *sc)
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{
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struct mii_data *mii;
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uint32_t bmcr, bmsr, status;
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mii = sc->mii_pdata;
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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) != 0)
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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) != 0) {
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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) != 0)
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mii->mii_media_active |= IFM_LOOP;
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if ((bmcr & BMCR_AUTOEN) != 0) {
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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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status = PHY_READ(sc, 0x12);
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if (status & 0x0080)
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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 (status & 0x0040)
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mii->mii_media_active |= 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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}
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