259 lines
6.4 KiB
C
259 lines
6.4 KiB
C
/* $NetBSD: smscphy.c,v 1.4 2021/08/25 21:50:29 andvar Exp $ */
|
|
|
|
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2006 Benno Rice. 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
|
|
*/
|
|
|
|
/* $FreeBSD: head/sys/dev/mii/smscphy.c 326255 2017-11-27 14:52:40Z pfg $ */
|
|
|
|
/*
|
|
* Driver for the SMSC LAN8710A
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: smscphy.c,v 1.4 2021/08/25 21:50:29 andvar Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/device.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/errno.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_media.h>
|
|
|
|
#include <dev/mii/mii.h>
|
|
#include <dev/mii/miivar.h>
|
|
#include <dev/mii/miidevs.h>
|
|
|
|
/* PHY special control/status register */
|
|
#define SMSCPHY_SPCSR 0x1f
|
|
#define SPCSR_SPDIND_10 0x0004
|
|
#define SPCSR_SPDIND_100 0x0008
|
|
#define SPCSR_SPDIND_SPDMASK 0x000c
|
|
#define SPCSR_SPDIND_FDX 0x0010
|
|
|
|
static int smscphy_match(device_t, cfdata_t, void *);
|
|
static void smscphy_attach(device_t, device_t, void *);
|
|
|
|
CFATTACH_DECL_NEW(smscphy, sizeof (struct mii_softc),
|
|
smscphy_match, smscphy_attach, mii_phy_detach, mii_phy_activate);
|
|
|
|
static void smscphy_power(struct mii_softc *, bool);
|
|
static int smscphy_service(struct mii_softc *, struct mii_data *, int);
|
|
static void smscphy_auto(struct mii_softc *, int);
|
|
static void smscphy_status(struct mii_softc *);
|
|
|
|
static const struct mii_phydesc smscphys[] = {
|
|
MII_PHY_DESC(SMSC, LAN8700),
|
|
MII_PHY_DESC(SMSC, LAN8710_LAN8720),
|
|
MII_PHY_END
|
|
};
|
|
|
|
static const struct mii_phy_funcs smscphy_funcs = {
|
|
smscphy_service,
|
|
smscphy_status,
|
|
mii_phy_reset
|
|
};
|
|
|
|
static int
|
|
smscphy_match(device_t dev, cfdata_t match, void *aux)
|
|
{
|
|
struct mii_attach_args *ma = aux;
|
|
|
|
if (mii_phy_match(ma, smscphys) != NULL)
|
|
return 10;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
smscphy_attach(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct mii_softc *sc = device_private(self);
|
|
struct mii_attach_args *ma = aux;
|
|
struct mii_data *mii = ma->mii_data;
|
|
const struct mii_phydesc *mpd;
|
|
|
|
mpd = mii_phy_match(ma, smscphys);
|
|
aprint_naive(": Media interface\n");
|
|
aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
|
|
|
|
sc->mii_dev = self;
|
|
sc->mii_inst = mii->mii_instance;
|
|
sc->mii_phy = ma->mii_phyno;
|
|
sc->mii_funcs = &smscphy_funcs;
|
|
sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2);
|
|
sc->mii_mpd_model = MII_MODEL(ma->mii_id2);
|
|
sc->mii_mpd_rev = MII_REV(ma->mii_id2);
|
|
sc->mii_pdata = mii;
|
|
sc->mii_flags = ma->mii_flags;
|
|
|
|
mii_lock(mii);
|
|
|
|
PHY_RESET(sc);
|
|
|
|
PHY_READ(sc, MII_BMSR, &sc->mii_capabilities);
|
|
sc->mii_capabilities &= ma->mii_capmask;
|
|
|
|
mii_unlock(mii);
|
|
|
|
mii_phy_add_media(sc);
|
|
}
|
|
|
|
static void
|
|
smscphy_power(struct mii_softc *sc, bool power)
|
|
{
|
|
uint16_t bmcr, new;
|
|
|
|
PHY_READ(sc, MII_BMCR, &bmcr);
|
|
if (power)
|
|
new = bmcr & ~BMCR_PDOWN;
|
|
else
|
|
new = bmcr | BMCR_PDOWN;
|
|
if (bmcr != new)
|
|
PHY_WRITE(sc, MII_BMCR, new);
|
|
}
|
|
|
|
static int
|
|
smscphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
|
|
{
|
|
struct ifmedia_entry *ife;
|
|
uint16_t reg;
|
|
|
|
KASSERT(mii_locked(mii));
|
|
|
|
ife = mii->mii_media.ifm_cur;
|
|
|
|
switch (cmd) {
|
|
case MII_POLLSTAT:
|
|
break;
|
|
|
|
case MII_MEDIACHG:
|
|
/* Try to power up the PHY in case it's down */
|
|
if (IFM_SUBTYPE(ife->ifm_media) != IFM_NONE)
|
|
smscphy_power(sc, true);
|
|
|
|
switch (IFM_SUBTYPE(ife->ifm_media)) {
|
|
case IFM_AUTO:
|
|
smscphy_auto(sc, ife->ifm_media);
|
|
break;
|
|
|
|
default:
|
|
mii_phy_setmedia(sc);
|
|
if (IFM_SUBTYPE(ife->ifm_media) == IFM_NONE)
|
|
smscphy_power(sc, false);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case MII_TICK:
|
|
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
|
|
break;
|
|
|
|
PHY_READ(sc, MII_BMSR, ®);
|
|
PHY_READ(sc, MII_BMSR, ®);
|
|
if (reg & BMSR_LINK) {
|
|
sc->mii_ticks = 0;
|
|
break;
|
|
}
|
|
|
|
if (++sc->mii_ticks <= MII_ANEGTICKS)
|
|
break;
|
|
|
|
PHY_RESET(sc);
|
|
smscphy_auto(sc, ife->ifm_media);
|
|
break;
|
|
}
|
|
|
|
/* Update the media status. */
|
|
PHY_STATUS(sc);
|
|
|
|
/* Callback if something changed. */
|
|
mii_phy_update(sc, cmd);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
smscphy_auto(struct mii_softc *sc, int media)
|
|
{
|
|
uint16_t anar;
|
|
|
|
sc->mii_ticks = 0;
|
|
anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) | ANAR_CSMA;
|
|
if ((media & IFM_FLOW) != 0)
|
|
anar |= ANAR_FC;
|
|
PHY_WRITE(sc, MII_ANAR, anar);
|
|
/* Apparently this helps. */
|
|
PHY_READ(sc, MII_ANAR, &anar);
|
|
PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
|
|
}
|
|
|
|
static void
|
|
smscphy_status(struct mii_softc *sc)
|
|
{
|
|
struct mii_data *mii = sc->mii_pdata;
|
|
uint16_t bmcr, bmsr, status;
|
|
|
|
KASSERT(mii_locked(mii));
|
|
|
|
mii->mii_media_status = IFM_AVALID;
|
|
mii->mii_media_active = IFM_ETHER;
|
|
|
|
PHY_READ(sc, MII_BMSR, &bmsr);
|
|
PHY_READ(sc, MII_BMSR, &bmsr);
|
|
if ((bmsr & BMSR_LINK) != 0)
|
|
mii->mii_media_status |= IFM_ACTIVE;
|
|
|
|
PHY_READ(sc, MII_BMCR, &bmcr);
|
|
if ((bmcr & BMCR_ISO) != 0) {
|
|
mii->mii_media_active |= IFM_NONE;
|
|
mii->mii_media_status = 0;
|
|
return;
|
|
}
|
|
|
|
if ((bmcr & BMCR_LOOP) != 0)
|
|
mii->mii_media_active |= IFM_LOOP;
|
|
|
|
if ((bmcr & BMCR_AUTOEN) != 0) {
|
|
if ((bmsr & BMSR_ACOMP) == 0) {
|
|
/* Erg, still trying, I guess... */
|
|
mii->mii_media_active |= IFM_NONE;
|
|
return;
|
|
}
|
|
}
|
|
|
|
PHY_READ(sc, SMSCPHY_SPCSR, &status);
|
|
if ((status & SPCSR_SPDIND_SPDMASK) == SPCSR_SPDIND_100)
|
|
mii->mii_media_active |= IFM_100_TX;
|
|
else
|
|
mii->mii_media_active |= IFM_10_T;
|
|
if (status & SPCSR_SPDIND_FDX)
|
|
mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
|
|
else
|
|
mii->mii_media_active |= IFM_HDX;
|
|
}
|