freebsd-dev/sys/dev/mii/inphy.c
Marius Strobl 4b9b1e1163 Add support for flow control.
Obtained from:	NetBSD (partially)
2010-11-22 21:24:29 +00:00

209 lines
5.1 KiB
C

/*-
* Copyright (c) 2001 Jonathan Lemon
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* driver for Intel 82553 and 82555 PHYs
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <sys/bus.h>
#include <net/if.h>
#include <net/if_media.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include "miidevs.h"
#include <dev/mii/inphyreg.h>
#include "miibus_if.h"
static int inphy_probe(device_t dev);
static int inphy_attach(device_t dev);
static device_method_t inphy_methods[] = {
/* device interface */
DEVMETHOD(device_probe, inphy_probe),
DEVMETHOD(device_attach, inphy_attach),
DEVMETHOD(device_detach, mii_phy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
{ 0, 0 }
};
static devclass_t inphy_devclass;
static driver_t inphy_driver = {
"inphy",
inphy_methods,
sizeof(struct mii_softc)
};
DRIVER_MODULE(inphy, miibus, inphy_driver, inphy_devclass, 0, 0);
static int inphy_service(struct mii_softc *, struct mii_data *, int);
static void inphy_status(struct mii_softc *);
static const struct mii_phydesc inphys[] = {
MII_PHY_DESC(INTEL, I82553C),
MII_PHY_DESC(INTEL, I82555),
MII_PHY_DESC(INTEL, I82562EM),
MII_PHY_DESC(INTEL, I82562ET),
MII_PHY_DESC(xxINTEL, I82553AB),
MII_PHY_END
};
static int
inphy_probe(device_t dev)
{
return (mii_phy_dev_probe(dev, inphys, BUS_PROBE_DEFAULT));
}
static int
inphy_attach(device_t dev)
{
struct mii_softc *sc;
struct mii_attach_args *ma;
struct mii_data *mii;
sc = device_get_softc(dev);
ma = device_get_ivars(dev);
sc->mii_dev = device_get_parent(dev);
mii = ma->mii_data;
LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
sc->mii_flags = miibus_get_flags(dev);
sc->mii_inst = mii->mii_instance++;
sc->mii_phy = ma->mii_phyno;
sc->mii_service = inphy_service;
sc->mii_pdata = mii;
sc->mii_flags |= MIIF_NOMANPAUSE;
ifmedia_add(&mii->mii_media,
IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
MII_MEDIA_100_TX, NULL);
mii_phy_reset(sc);
sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
device_printf(dev, " ");
mii_phy_add_media(sc);
printf("\n");
MIIBUS_MEDIAINIT(sc->mii_dev);
return (0);
}
static int
inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
switch (cmd) {
case MII_POLLSTAT:
break;
case MII_MEDIACHG:
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
break;
mii_phy_setmedia(sc);
break;
case MII_TICK:
if (mii_phy_tick(sc) == EJUSTRETURN)
return (0);
break;
}
/* Update the media status. */
inphy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}
static void
inphy_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int bmsr, bmcr, scr;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
if (bmsr & BMSR_LINK)
mii->mii_media_status |= IFM_ACTIVE;
bmcr = PHY_READ(sc, MII_BMCR);
if (bmcr & BMCR_ISO) {
mii->mii_media_active |= IFM_NONE;
mii->mii_media_status = 0;
return;
}
if (bmcr & BMCR_LOOP)
mii->mii_media_active |= IFM_LOOP;
if (bmcr & BMCR_AUTOEN) {
if ((bmsr & BMSR_ACOMP) == 0) {
mii->mii_media_active |= IFM_NONE;
return;
}
scr = PHY_READ(sc, MII_INPHY_SCR);
if (scr & SCR_S100)
mii->mii_media_active |= IFM_100_TX;
else
mii->mii_media_active |= IFM_10_T;
if (scr & SCR_FDX)
mii->mii_media_active |=
IFM_FDX | mii_phy_flowstatus(sc);
else
mii->mii_media_active |= IFM_HDX;
} else
mii->mii_media_active = ife->ifm_media;
}