/* $NetBSD: bmtphy.c,v 1.35 2019/03/25 09:20:46 msaitoh Exp $ */
/*-
* Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Copyright (c) 1997 Manuel Bouyer. 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.
*/
/*
* Driver for the Broadcom BCM5201/BCM5202 "Mini-Theta" PHYs. This also
* drives the PHY on the 3Com 3c905C. The 3c905C's PHY is described in
* the 3c905C data sheet.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: bmtphy.c,v 1.35 2019/03/25 09:20:46 msaitoh 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>
#include <dev/mii/bmtphyreg.h>
static int bmtphymatch(device_t, cfdata_t, void *);
static void bmtphyattach(device_t, device_t, void *);
CFATTACH_DECL_NEW(bmtphy, sizeof(struct mii_softc),
bmtphymatch, bmtphyattach, mii_phy_detach, mii_phy_activate);
static int bmtphy_service(struct mii_softc *, struct mii_data *, int);
static void bmtphy_status(struct mii_softc *);
static void bmtphy_reset(struct mii_softc *);
static const struct mii_phy_funcs bmtphy_funcs = {
bmtphy_service, bmtphy_status, bmtphy_reset,
};
static const struct mii_phydesc bmtphys[] = {
MII_PHY_DESC(xxBROADCOM, 3C905B),
MII_PHY_DESC(xxBROADCOM, 3C905C),
MII_PHY_DESC(xxBROADCOM, BCM5201),
MII_PHY_DESC(xxBROADCOM, BCM5214),
MII_PHY_DESC(xxBROADCOM, BCM5221),
MII_PHY_DESC(xxBROADCOM, BCM5222),
MII_PHY_DESC(xxBROADCOM, BCM4401),
MII_PHY_END,
};
static int
bmtphymatch(device_t parent, cfdata_t match, void *aux)
{
struct mii_attach_args *ma = aux;
if (mii_phy_match(ma, bmtphys) != NULL)
return 10;
return 0;
}
static void
bmtphyattach(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, bmtphys);
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_mpd_model = MII_MODEL(ma->mii_id2);
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
sc->mii_funcs = &bmtphy_funcs;
sc->mii_pdata = mii;
sc->mii_flags = ma->mii_flags;
sc->mii_anegticks = MII_ANEGTICKS;
PHY_RESET(sc);
/* XXX Check AUX_STS_FX_MODE to set MIIF_HAVE_FIBER? */
PHY_READ(sc, MII_BMSR, &sc->mii_capabilities);
sc->mii_capabilities &= ma->mii_capmask;
aprint_normal_dev(self, "");
if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
aprint_error("no media present");
else
mii_phy_add_media(sc);
aprint_normal("\n");
}
static int
bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
uint16_t reg;
switch (cmd) {
case MII_POLLSTAT:
/* If we're not polling our PHY instance, just return. */
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return 0;
break;
case MII_MEDIACHG:
/*
* If the media indicates a different PHY instance,
* isolate ourselves.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
PHY_READ(sc, MII_BMCR, ®);
PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
return 0;
}
/* 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 we're not currently selected, just return. */
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return 0;
if (mii_phy_tick(sc) == EJUSTRETURN)
return 0;
break;
case MII_DOWN:
mii_phy_down(sc);
return 0;
}
/* Update the media status. */
mii_phy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return 0;
}
static void
bmtphy_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
uint16_t bmsr, bmcr, aux_csr;
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)
mii->mii_media_status |= IFM_ACTIVE;
PHY_READ(sc, MII_BMCR, &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) {
/*
* The media status bits are only valid if autonegotiation
* has completed (or it's disabled).
*/
if ((bmsr & BMSR_ACOMP) == 0) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
PHY_READ(sc, MII_BMTPHY_AUX_CSR, &aux_csr);
if (aux_csr & AUX_CSR_SPEED)
mii->mii_media_active |= IFM_100_TX;
else
mii->mii_media_active |= IFM_10_T;
if (aux_csr & AUX_CSR_FDX)
mii->mii_media_active |= IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
if (mii->mii_media_active & IFM_FDX)
mii->mii_media_active |= mii_phy_flowstatus(sc);
} else
mii->mii_media_active = ife->ifm_media;
}
static void
bmtphy_reset(struct mii_softc *sc)
{
uint16_t data;
mii_phy_reset(sc);
if (sc->mii_mpd_model == MII_MODEL_xxBROADCOM_BCM5221) {
/* Enable shadow register mode */
PHY_READ(sc, 0x1f, &data);
PHY_WRITE(sc, 0x1f, data | 0x0080);
/* Enable APD (Auto PowerDetect) */
PHY_READ(sc, MII_BMTPHY_AUX2, &data);
PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020);
/* Enable clocks across APD for Auto-MDIX functionality */
PHY_READ(sc, MII_BMTPHY_INTR, &data);
PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004);
/* Disable shadow register mode */
PHY_READ(sc, 0x1f, &data);
PHY_WRITE(sc, 0x1f, data & ~0x0080);
}
}