392 lines
10 KiB
C
392 lines
10 KiB
C
/* $FreeBSD$ */
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/*
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* Principal Author: Parag Patel
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* Copyright (c) 2001
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* 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 unmodified, this list of conditions, and the following
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* 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 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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* Additonal Copyright (c) 2001 by Traakan Software under same licence.
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* Secondary Author: Matthew Jacob
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*/
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/*
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* driver for the Marvell 88E1000 series external 1000/100/10-BT PHY.
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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/bus.h>
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#include <machine/clock.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/e1000phyreg.h>
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#include "miibus_if.h"
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static int e1000phy_probe(device_t);
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static int e1000phy_attach(device_t);
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static device_method_t e1000phy_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, e1000phy_probe),
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DEVMETHOD(device_attach, e1000phy_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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{ 0, 0 }
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};
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static devclass_t e1000phy_devclass;
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static driver_t e1000phy_driver = {
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"e1000phy", e1000phy_methods, sizeof (struct mii_softc)
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};
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DRIVER_MODULE(e1000phy, miibus, e1000phy_driver, e1000phy_devclass, 0, 0);
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static int e1000phy_service(struct mii_softc *, struct mii_data *, int);
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static void e1000phy_status(struct mii_softc *);
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static void e1000phy_reset(struct mii_softc *);
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static int e1000phy_mii_phy_auto(struct mii_softc *);
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static int e1000phy_debug = 0;
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static int
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e1000phy_probe(device_t dev)
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{
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struct mii_attach_args *ma;
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u_int32_t id;
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ma = device_get_ivars(dev);
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id = ((ma->mii_id1 << 16) | ma->mii_id2) & E1000_ID_MASK;
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if (id != E1000_ID_88E1000 && id != E1000_ID_88E1000S) {
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return ENXIO;
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}
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device_set_desc(dev, MII_STR_MARVELL_E1000);
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return 0;
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}
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static int
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e1000phy_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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struct mii_data *mii;
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getenv_int("e1000phy_debug", &e1000phy_debug);
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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 = e1000phy_service;
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sc->mii_pdata = mii;
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sc->mii_flags |= MIIF_NOISOLATE;
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mii->mii_instance++;
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e1000phy_reset(sc);
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device_printf(dev, " ");
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#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
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/*
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
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E1000_CR_ISOLATE);
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*/
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst),
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E1000_CR_SPEED_10);
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printf("10baseT, ");
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst),
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E1000_CR_SPEED_10 | E1000_CR_FULL_DUPLEX);
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printf("10baseT-FDX, ");
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst),
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E1000_CR_SPEED_100);
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printf("100baseTX, ");
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst),
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E1000_CR_SPEED_100 | E1000_CR_FULL_DUPLEX);
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printf("100baseTX-FDX, ");
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/*
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* 1000BT-simplex not supported; driver must ignore this entry,
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* but it must be present in order to manually set full-duplex.
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*/
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst),
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E1000_CR_SPEED_1000);
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, sc->mii_inst),
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E1000_CR_SPEED_1000 | E1000_CR_FULL_DUPLEX);
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printf("1000baseTX-FDX, ");
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ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
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printf("auto\n");
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#undef ADD
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MIIBUS_MEDIAINIT(sc->mii_dev);
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return(0);
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}
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static void
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e1000phy_reset(struct mii_softc *sc)
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{
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u_int32_t reg;
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int i;
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/* initialize custom E1000 registers to magic values */
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reg = PHY_READ(sc, E1000_SCR);
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reg &= ~E1000_SCR_AUTO_X_MODE;
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PHY_WRITE(sc, E1000_SCR, reg);
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/* normal PHY reset */
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/*mii_phy_reset(sc);*/
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reg = PHY_READ(sc, E1000_CR);
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reg |= E1000_CR_RESET;
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PHY_WRITE(sc, E1000_CR, reg);
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for (i = 0; i < 500; i++) {
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DELAY(1);
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reg = PHY_READ(sc, E1000_CR);
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if (!(reg & E1000_CR_RESET))
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break;
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}
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/* set more custom E1000 registers to magic values */
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reg = PHY_READ(sc, E1000_SCR);
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reg |= E1000_SCR_ASSERT_CRS_ON_TX;
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PHY_WRITE(sc, E1000_SCR, reg);
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reg = PHY_READ(sc, E1000_ESCR);
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reg |= E1000_ESCR_TX_CLK_25;
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PHY_WRITE(sc, E1000_ESCR, reg);
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/* even more magic to reset DSP? */
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PHY_WRITE(sc, 29, 0x1d);
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PHY_WRITE(sc, 30, 0xc1);
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PHY_WRITE(sc, 30, 0x00);
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}
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static int
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e1000phy_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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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, E1000_CR);
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PHY_WRITE(sc, E1000_CR, reg | E1000_CR_ISOLATE);
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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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}
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switch (IFM_SUBTYPE(ife->ifm_media)) {
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case IFM_AUTO:
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e1000phy_reset(sc);
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(void)e1000phy_mii_phy_auto(sc);
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break;
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case IFM_1000_T:
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e1000phy_reset(sc);
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/* TODO - any other way to force 1000BT? */
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(void)e1000phy_mii_phy_auto(sc);
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break;
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case IFM_100_TX:
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e1000phy_reset(sc);
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if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
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PHY_WRITE(sc, E1000_CR,
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E1000_CR_FULL_DUPLEX | E1000_CR_SPEED_100);
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PHY_WRITE(sc, E1000_AR, E1000_AR_100TX_FD);
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} else {
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PHY_WRITE(sc, E1000_CR, E1000_CR_SPEED_100);
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PHY_WRITE(sc, E1000_AR, E1000_AR_100TX);
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}
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break;
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case IFM_10_T:
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e1000phy_reset(sc);
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if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
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PHY_WRITE(sc, E1000_CR,
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E1000_CR_FULL_DUPLEX | E1000_CR_SPEED_10);
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PHY_WRITE(sc, E1000_AR, E1000_AR_10T_FD);
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} else {
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PHY_WRITE(sc, E1000_CR, E1000_CR_SPEED_10);
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PHY_WRITE(sc, E1000_AR, E1000_AR_10T);
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}
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break;
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default:
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return (EINVAL);
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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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/*
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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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* Only used for autonegotiation.
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*/
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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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* check for link.
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* Read the status register twice; BMSR_LINK is latch-low.
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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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break;
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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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e1000phy_reset(sc);
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e1000phy_mii_phy_auto(sc);
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return (0);
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}
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/* Update the media status. */
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e1000phy_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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e1000phy_status(struct mii_softc *sc)
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{
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struct mii_data *mii = sc->mii_pdata;
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int bmsr, bmcr, esr, ssr, isr, ar, lpar;
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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, E1000_SR) | PHY_READ(sc, E1000_SR);
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esr = PHY_READ(sc, E1000_ESR);
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bmcr = PHY_READ(sc, E1000_CR);
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ssr = PHY_READ(sc, E1000_SSR);
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isr = PHY_READ(sc, E1000_ISR);
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ar = PHY_READ(sc, E1000_AR);
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lpar = PHY_READ(sc, E1000_LPAR);
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if (bmsr & E1000_SR_LINK_STATUS)
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mii->mii_media_status |= IFM_ACTIVE;
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if (bmcr & E1000_CR_LOOPBACK)
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mii->mii_media_active |= IFM_LOOP;
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if ((!(bmsr & E1000_SR_AUTO_NEG_COMPLETE) || !(ssr & E1000_SSR_LINK) ||
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!(ssr & E1000_SSR_SPD_DPLX_RESOLVED))) {
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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 (ssr & E1000_SSR_1000MBS)
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mii->mii_media_active |= IFM_1000_T;
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else if (ssr & E1000_SSR_100MBS)
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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 (ssr & E1000_SSR_DUPLEX)
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mii->mii_media_active |= IFM_FDX;
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else
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mii->mii_media_active |= IFM_HDX;
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/* FLAG0==rx-flow-control FLAG1==tx-flow-control */
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if ((ar & E1000_AR_PAUSE) && (lpar & E1000_LPAR_PAUSE)) {
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mii->mii_media_active |= IFM_FLAG0 | IFM_FLAG1;
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} else if (!(ar & E1000_AR_PAUSE) && (ar & E1000_AR_ASM_DIR) &&
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(lpar & E1000_LPAR_PAUSE) && (lpar & E1000_LPAR_ASM_DIR)) {
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mii->mii_media_active |= IFM_FLAG1;
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} else if ((ar & E1000_AR_PAUSE) && (ar & E1000_AR_ASM_DIR) &&
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!(lpar & E1000_LPAR_PAUSE) && (lpar & E1000_LPAR_ASM_DIR)) {
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mii->mii_media_active |= IFM_FLAG0;
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}
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}
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static int
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e1000phy_mii_phy_auto(struct mii_softc *mii)
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{
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PHY_WRITE(mii, E1000_AR, E1000_AR_10T | E1000_AR_10T_FD |
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E1000_AR_100TX | E1000_AR_100TX_FD |
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E1000_AR_PAUSE | E1000_AR_ASM_DIR);
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PHY_WRITE(mii, E1000_1GCR, E1000_1GCR_1000T_FD);
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PHY_WRITE(mii, E1000_CR,
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E1000_CR_AUTO_NEG_ENABLE | E1000_CR_RESTART_AUTO_NEG);
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return (EJUSTRETURN);
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}
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