/* $NetBSD: ipgphy.c,v 1.11 2023/02/22 08:09:09 msaitoh Exp $ */
/* $OpenBSD: ipgphy.c,v 1.19 2015/07/19 06:28:12 yuo Exp $ */
/*-
* Copyright (c) 2006, Pyun YongHyeon <
[email protected]>
* 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 unmodified, 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 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.
*
*/
/*
* Driver for the IC Plus IP1000A/IP1001 10/100/1000 PHY.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ipgphy.c,v 1.11 2023/02/22 08:09:09 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 <prop/proplib.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/ipgphyreg.h>
static int ipgphy_match(device_t, cfdata_t, void *);
static void ipgphy_attach(device_t, device_t, void *);
struct ipgphy_softc {
struct mii_softc sc_mii;
bool need_loaddspcode;
};
CFATTACH_DECL_NEW(ipgphy, sizeof(struct ipgphy_softc),
ipgphy_match, ipgphy_attach, mii_phy_detach, mii_phy_activate);
static int ipgphy_service(struct mii_softc *, struct mii_data *, int);
static void ipgphy_status(struct mii_softc *);
static int ipgphy_mii_phy_auto(struct mii_softc *, u_int);
static void ipgphy_load_dspcode(struct mii_softc *);
static void ipgphy_reset(struct mii_softc *);
static const struct mii_phy_funcs ipgphy_funcs = {
ipgphy_service, ipgphy_status, ipgphy_reset,
};
static const struct mii_phydesc ipgphys[] = {
MII_PHY_DESC(xxICPLUS, IP1000A),
MII_PHY_DESC(xxICPLUS, IP1001),
MII_PHY_END,
};
static int
ipgphy_match(device_t parent, cfdata_t match, void *aux)
{
struct mii_attach_args *ma = aux;
if (mii_phy_match(ma, ipgphys) != NULL)
return 10;
return 0;
}
static void
ipgphy_attach(device_t parent, device_t self, void *aux)
{
struct ipgphy_softc *isc = device_private(self);
struct mii_softc *sc = &isc->sc_mii;
struct mii_attach_args *ma = aux;
struct mii_data *mii = ma->mii_data;
const struct mii_phydesc *mpd;
prop_dictionary_t dict;
mpd = mii_phy_match(ma, ipgphys);
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_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_funcs = &ipgphy_funcs;
sc->mii_pdata = mii;
sc->mii_flags = ma->mii_flags;
sc->mii_flags |= MIIF_NOISOLATE;
if (device_is_a(parent, "stge")) {
dict = device_properties(parent);
prop_dictionary_get_bool(dict, "need_loaddspcode",
&isc->need_loaddspcode);
}
mii_lock(mii);
PHY_RESET(sc);
PHY_READ(sc, MII_BMSR, &sc->mii_capabilities);
sc->mii_capabilities &= ma->mii_capmask;
//sc->mii_capabilities &= ~BMSR_ANEG;
if (sc->mii_capabilities & BMSR_EXTSTAT)
PHY_READ(sc, MII_EXTSR, &sc->mii_extcapabilities);
mii_unlock(mii);
mii_phy_add_media(sc);
}
static int
ipgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
uint16_t reg, speed;
KASSERT(mii_locked(mii));
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;
PHY_RESET(sc);
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_AUTO:
case IFM_1000_T:
/*
* This device is required to do auto negotiation
* on 1000BASE-T.
*/
(void)ipgphy_mii_phy_auto(sc, ife->ifm_media);
goto done;
break;
case IFM_100_TX:
speed = BMCR_S100;
break;
case IFM_10_T:
speed = BMCR_S10;
break;
default:
return EINVAL;
}
if ((ife->ifm_media & IFM_FDX) != 0)
speed |= BMCR_FDX;
PHY_WRITE(sc, MII_100T2CR, 0);
PHY_WRITE(sc, MII_BMCR, speed);
done:
break;
case MII_TICK:
/* If we're not currently selected, just return. */
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return 0;
/* Is the interface even up? */
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return 0;
/* Only used for autonegotiation. */
if ((IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) &&
(IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T)) {
sc->mii_ticks = 0;
break;
}
/*
* Check to see if we have link. If we do, we don't
* need to restart the autonegotiation process. Read
* the BMSR twice in case it's latched.
*/
PHY_READ(sc, MII_BMSR, ®);
PHY_READ(sc, MII_BMSR, ®);
if (reg & BMSR_LINK) {
/*
* Reset autonegotiation timer to 0 in case the link
* goes down in the next tick.
*/
sc->mii_ticks = 0;
/* See above. */
break;
}
/* Announce link loss right after it happens */
if (sc->mii_ticks++ == 0)
break;
/* Only retry autonegotiation every mii_anegticks seconds. */
if (sc->mii_ticks < sc->mii_anegticks)
break;
sc->mii_ticks = 0;
ipgphy_mii_phy_auto(sc, ife->ifm_media);
break;
}
/* Update the media status. */
ipgphy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return 0;
}
static void
ipgphy_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, stat, gtsr;
KASSERT(mii_locked(mii));
/* For IP1000A, use generic way */
if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1000A) {
ukphy_status(sc);
return;
}
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_LOOP)
mii->mii_media_active |= IFM_LOOP;
if (bmcr & BMCR_AUTOEN) {
if ((bmsr & BMSR_ACOMP) == 0) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
PHY_READ(sc, IPGPHY_LSR, &stat);
switch (stat & IPGPHY_LSR_SPEED_MASK) {
case IPGPHY_LSR_SPEED_10:
mii->mii_media_active |= IFM_10_T;
break;
case IPGPHY_LSR_SPEED_100:
mii->mii_media_active |= IFM_100_TX;
break;
case IPGPHY_LSR_SPEED_1000:
mii->mii_media_active |= IFM_1000_T;
break;
default:
mii->mii_media_active |= IFM_NONE;
return;
}
if (stat & IPGPHY_LSR_FULL_DUPLEX)
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);
if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) {
PHY_READ(sc, MII_100T2SR, >sr);
if (gtsr & GTSR_MS_RES)
mii->mii_media_active |= IFM_ETH_MASTER;
}
} else
mii->mii_media_active = ife->ifm_media;
}
static int
ipgphy_mii_phy_auto(struct mii_softc *sc, u_int media)
{
uint16_t reg = 0;
u_int subtype = IFM_SUBTYPE(media);
KASSERT(mii_locked(sc->mii_pdata));
/* XXX Is it requreid ? */
if (sc->mii_mpd_model == MII_MODEL_xxICPLUS_IP1001) {
PHY_READ(sc, MII_ANAR, ®);
reg &= ~(ANAR_PAUSE_SYM | ANAR_PAUSE_ASYM);
reg |= ANAR_NP;
}
if (subtype == IFM_AUTO)
reg |= ANAR_10 | ANAR_10_FD | ANAR_TX | ANAR_TX_FD;
if (sc->mii_flags & MIIF_DOPAUSE)
reg |= ANAR_PAUSE_SYM | ANAR_PAUSE_ASYM;
PHY_WRITE(sc, MII_ANAR, reg | ANAR_CSMA);
if (subtype == IFM_AUTO)
reg = GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
else if (subtype == IFM_1000_T) {
if ((media & IFM_FDX) != 0)
reg = GTCR_ADV_1000TFDX;
else
reg = GTCR_ADV_1000THDX;
} else
reg = 0;
PHY_WRITE(sc, MII_100T2CR, reg);
PHY_WRITE(sc, MII_BMCR, BMCR_FDX | BMCR_AUTOEN | BMCR_STARTNEG);
return EJUSTRETURN;
}
static void
ipgphy_load_dspcode(struct mii_softc *sc)
{
PHY_WRITE(sc, 31, 0x0001);
PHY_WRITE(sc, 27, 0x01e0);
PHY_WRITE(sc, 31, 0x0002);
PHY_WRITE(sc, 27, 0xeb8e);
PHY_WRITE(sc, 31, 0x0000);
PHY_WRITE(sc, 30, 0x005e);
PHY_WRITE(sc, 9, 0x0700);
DELAY(50);
}
static void
ipgphy_reset(struct mii_softc *sc)
{
struct ipgphy_softc *isc = device_private(sc->mii_dev);
uint16_t reg;
KASSERT(mii_locked(sc->mii_pdata));
mii_phy_reset(sc);
/* Clear autoneg/full-duplex as we don't want it after reset */
PHY_READ(sc, MII_BMCR, ®);
reg &= ~(BMCR_AUTOEN | BMCR_FDX);
PHY_WRITE(sc, MII_BMCR, reg);
if (isc->need_loaddspcode)
ipgphy_load_dspcode(sc);
}
