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NetBSD/sys/dev/mii/rgephy.c

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/* $NetBSD: rgephy.c,v 1.33 2013/06/16 06:29:08 msaitoh Exp $ */
/*
* Copyright (c) 2003
* Bill Paul <wpaul@windriver.com>. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. 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 Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
* 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>
__KERNEL_RCSID(0, "$NetBSD: rgephy.c,v 1.33 2013/06/16 06:29:08 msaitoh Exp $");
/*
* Driver for the RealTek 8169S/8110S internal 10/100/1000 PHY.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/socket.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/rgephyreg.h>
#include <dev/ic/rtl81x9reg.h>
static int rgephy_match(device_t, cfdata_t, void *);
static void rgephy_attach(device_t, device_t, void *);
struct rgephy_softc {
struct mii_softc mii_sc;
int mii_revision;
};
CFATTACH_DECL_NEW(rgephy, sizeof(struct rgephy_softc),
rgephy_match, rgephy_attach, mii_phy_detach, mii_phy_activate);
static int rgephy_service(struct mii_softc *, struct mii_data *, int);
static void rgephy_status(struct mii_softc *);
static int rgephy_mii_phy_auto(struct mii_softc *);
static void rgephy_reset(struct mii_softc *);
static void rgephy_loop(struct mii_softc *);
static void rgephy_load_dspcode(struct mii_softc *);
static const struct mii_phy_funcs rgephy_funcs = {
rgephy_service, rgephy_status, rgephy_reset,
};
static const struct mii_phydesc rgephys[] = {
{ MII_OUI_xxREALTEK, MII_MODEL_xxREALTEK_RTL8169S,
MII_STR_xxREALTEK_RTL8169S },
{ MII_OUI_REALTEK, MII_MODEL_REALTEK_RTL8169S,
MII_STR_REALTEK_RTL8169S },
{ 0, 0,
NULL }
};
static int
rgephy_match(device_t parent, cfdata_t match, void *aux)
{
struct mii_attach_args *ma = aux;
if (mii_phy_match(ma, rgephys) != NULL)
return 10;
return 0;
}
static void
rgephy_attach(device_t parent, device_t self, void *aux)
{
struct rgephy_softc *rsc = device_private(self);
struct mii_softc *sc = &rsc->mii_sc;
struct mii_attach_args *ma = aux;
struct mii_data *mii = ma->mii_data;
const struct mii_phydesc *mpd;
int rev;
const char *sep = "";
ma = aux;
mii = ma->mii_data;
rev = MII_REV(ma->mii_id2);
mpd = mii_phy_match(ma, rgephys);
aprint_naive(": Media interface\n");
aprint_normal(": %s, rev. %d\n", mpd->mpd_name, rev);
rsc->mii_revision = rev;
sc->mii_dev = self;
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
sc->mii_pdata = mii;
sc->mii_flags = mii->mii_flags;
sc->mii_anegticks = MII_ANEGTICKS_GIGE;
sc->mii_funcs = &rgephy_funcs;
#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
#define PRINT(n) aprint_normal("%s%s", sep, (n)); sep = ", "
#ifdef __FreeBSD__
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
BMCR_LOOP|BMCR_S100);
#endif
sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
sc->mii_capabilities &= ~BMSR_ANEG;
/*
* FreeBSD does not check EXSTAT, but instead adds gigabit
* media explicitly. Why?
*/
aprint_normal_dev(self, "");
if (sc->mii_capabilities & BMSR_EXTSTAT) {
sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
}
mii_phy_add_media(sc);
/* rtl8169S does not report auto-sense; add manually. */
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), MII_NMEDIA);
sep =", ";
PRINT("auto");
#undef ADD
#undef PRINT
rgephy_reset(sc);
aprint_normal("\n");
}
static int
rgephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct rgephy_softc *rsc;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int reg, speed, gig, anar;
rsc = (struct rgephy_softc *)sc;
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) {
reg = 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;
rgephy_reset(sc); /* XXX hardware bug work-around */
anar = PHY_READ(sc, MII_ANAR);
anar &= ~(ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10);
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_AUTO:
#ifdef foo
/*
* If we're already in auto mode, just return.
*/
if (PHY_READ(sc, MII_BMCR) & BMCR_AUTOEN)
return 0;
#endif
(void)rgephy_mii_phy_auto(sc);
break;
case IFM_1000_T:
speed = BMCR_S1000;
goto setit;
case IFM_100_TX:
speed = BMCR_S100;
anar |= ANAR_TX_FD | ANAR_TX;
goto setit;
case IFM_10_T:
speed = BMCR_S10;
anar |= ANAR_10_FD | ANAR_10;
setit:
rgephy_loop(sc);
if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
speed |= BMCR_FDX;
gig = GTCR_ADV_1000TFDX;
anar &= ~(ANAR_TX | ANAR_10);
} else {
gig = GTCR_ADV_1000THDX;
anar &= ~(ANAR_TX_FD | ANAR_10_FD);
}
if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) {
PHY_WRITE(sc, MII_100T2CR, 0);
PHY_WRITE(sc, MII_ANAR, anar);
PHY_WRITE(sc, MII_BMCR, speed |
BMCR_AUTOEN | BMCR_STARTNEG);
break;
}
/*
* When setting the link manually, one side must
* be the master and the other the slave. However
* ifmedia doesn't give us a good way to specify
* this, so we fake it by using one of the LINK
* flags. If LINK0 is set, we program the PHY to
* be a master, otherwise it's a slave.
*/
if ((mii->mii_ifp->if_flags & IFF_LINK0)) {
PHY_WRITE(sc, MII_100T2CR,
gig|GTCR_MAN_MS|GTCR_ADV_MS);
} else {
PHY_WRITE(sc, MII_100T2CR, gig|GTCR_MAN_MS);
}
PHY_WRITE(sc, MII_BMCR, speed |
BMCR_AUTOEN | BMCR_STARTNEG);
break;
case IFM_NONE:
PHY_WRITE(sc, MII_BMCR, BMCR_ISO|BMCR_PDOWN);
break;
case IFM_100_T4:
default:
return EINVAL;
}
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)) {
/*
* Reset autonegotiation timer to 0 to make sure
* the future autonegotiation start with 0.
*/
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.
*/
if (rsc->mii_revision >= 2) {
/* RTL8211B(L) */
reg = PHY_READ(sc, RGEPHY_MII_SSR);
if (reg & RGEPHY_SSR_LINK) {
sc->mii_ticks = 0;
break;
}
} else {
reg = PHY_READ(sc, RTK_GMEDIASTAT);
if ((reg & RTK_GMEDIASTAT_LINK) != 0) {
sc->mii_ticks = 0;
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)
return 0;
rgephy_mii_phy_auto(sc);
break;
}
/* Update the media status. */
rgephy_status(sc);
/*
* Callback if something changed. Note that we need to poke
* the DSP on the RealTek PHYs if the media changes.
*
*/
if (sc->mii_media_active != mii->mii_media_active ||
sc->mii_media_status != mii->mii_media_status ||
cmd == MII_MEDIACHG) {
rgephy_load_dspcode(sc);
}
mii_phy_update(sc, cmd);
return 0;
}
static void
rgephy_status(struct mii_softc *sc)
{
struct rgephy_softc *rsc;
struct mii_data *mii = sc->mii_pdata;
int gstat, bmsr, bmcr;
uint16_t ssr;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
rsc = (struct rgephy_softc *)sc;
if (rsc->mii_revision >= 2) {
ssr = PHY_READ(sc, RGEPHY_MII_SSR);
if (ssr & RGEPHY_SSR_LINK)
mii->mii_media_status |= IFM_ACTIVE;
} else {
gstat = PHY_READ(sc, RTK_GMEDIASTAT);
if ((gstat & RTK_GMEDIASTAT_LINK) != 0)
mii->mii_media_status |= IFM_ACTIVE;
}
bmsr = PHY_READ(sc, MII_BMSR);
bmcr = PHY_READ(sc, MII_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;
}
}
if (rsc->mii_revision >= 2) {
ssr = PHY_READ(sc, RGEPHY_MII_SSR);
switch (ssr & RGEPHY_SSR_SPD_MASK) {
case RGEPHY_SSR_S1000:
mii->mii_media_active |= IFM_1000_T;
break;
case RGEPHY_SSR_S100:
mii->mii_media_active |= IFM_100_TX;
break;
case RGEPHY_SSR_S10:
mii->mii_media_active |= IFM_10_T;
break;
default:
mii->mii_media_active |= IFM_NONE;
break;
}
if (ssr & RGEPHY_SSR_FDX)
mii->mii_media_active |= mii_phy_flowstatus(sc) |
IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
} else {
gstat = PHY_READ(sc, RTK_GMEDIASTAT);
if ((gstat & RTK_GMEDIASTAT_1000MBPS) != 0)
mii->mii_media_active |= IFM_1000_T;
else if ((gstat & RTK_GMEDIASTAT_100MBPS) != 0)
mii->mii_media_active |= IFM_100_TX;
else if ((gstat & RTK_GMEDIASTAT_10MBPS) != 0)
mii->mii_media_active |= IFM_10_T;
else
mii->mii_media_active |= IFM_NONE;
if ((gstat & RTK_GMEDIASTAT_FDX) != 0)
mii->mii_media_active |= mii_phy_flowstatus(sc) |
IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
}
}
static int
rgephy_mii_phy_auto(struct mii_softc *mii)
{
int anar;
mii->mii_ticks = 0;
rgephy_loop(mii);
rgephy_reset(mii);
anar = BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA;
if (mii->mii_flags & MIIF_DOPAUSE)
anar |= ANAR_FC | ANAR_PAUSE_ASYM;
PHY_WRITE(mii, MII_ANAR, anar);
DELAY(1000);
PHY_WRITE(mii, MII_100T2CR, GTCR_ADV_1000THDX | GTCR_ADV_1000TFDX);
DELAY(1000);
PHY_WRITE(mii, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
DELAY(100);
return EJUSTRETURN;
}
static void
rgephy_loop(struct mii_softc *sc)
{
struct rgephy_softc *rsc;
uint32_t bmsr;
int i;
rsc = (struct rgephy_softc *)sc;
if (rsc->mii_revision < 2) {
PHY_WRITE(sc, MII_BMCR, BMCR_PDOWN);
DELAY(1000);
}
for (i = 0; i < 15000; i++) {
bmsr = PHY_READ(sc, MII_BMSR);
if ((bmsr & BMSR_LINK) == 0) {
#if 0
device_printf(sc->mii_dev, "looped %d\n", i);
#endif
break;
}
DELAY(10);
}
}
#define PHY_SETBIT(x, y, z) \
PHY_WRITE(x, y, (PHY_READ(x, y) | (z)))
#define PHY_CLRBIT(x, y, z) \
PHY_WRITE(x, y, (PHY_READ(x, y) & ~(z)))
/*
* Initialize RealTek PHY per the datasheet. The DSP in the PHYs of
* existing revisions of the 8169S/8110S chips need to be tuned in
* order to reliably negotiate a 1000Mbps link. This is only needed
* for rev 0 and rev 1 of the PHY. Later versions work without
* any fixups.
*/
static void
rgephy_load_dspcode(struct mii_softc *sc)
{
struct rgephy_softc *rsc;
int val;
rsc = (struct rgephy_softc *)sc;
if (rsc->mii_revision >= 2)
return;
#if 1
PHY_WRITE(sc, 31, 0x0001);
PHY_WRITE(sc, 21, 0x1000);
PHY_WRITE(sc, 24, 0x65C7);
PHY_CLRBIT(sc, 4, 0x0800);
val = PHY_READ(sc, 4) & 0xFFF;
PHY_WRITE(sc, 4, val);
PHY_WRITE(sc, 3, 0x00A1);
PHY_WRITE(sc, 2, 0x0008);
PHY_WRITE(sc, 1, 0x1020);
PHY_WRITE(sc, 0, 0x1000);
PHY_SETBIT(sc, 4, 0x0800);
PHY_CLRBIT(sc, 4, 0x0800);
val = (PHY_READ(sc, 4) & 0xFFF) | 0x7000;
PHY_WRITE(sc, 4, val);
PHY_WRITE(sc, 3, 0xFF41);
PHY_WRITE(sc, 2, 0xDE60);
PHY_WRITE(sc, 1, 0x0140);
PHY_WRITE(sc, 0, 0x0077);
val = (PHY_READ(sc, 4) & 0xFFF) | 0xA000;
PHY_WRITE(sc, 4, val);
PHY_WRITE(sc, 3, 0xDF01);
PHY_WRITE(sc, 2, 0xDF20);
PHY_WRITE(sc, 1, 0xFF95);
PHY_WRITE(sc, 0, 0xFA00);
val = (PHY_READ(sc, 4) & 0xFFF) | 0xB000;
PHY_WRITE(sc, 4, val);
PHY_WRITE(sc, 3, 0xFF41);
PHY_WRITE(sc, 2, 0xDE20);
PHY_WRITE(sc, 1, 0x0140);
PHY_WRITE(sc, 0, 0x00BB);
val = (PHY_READ(sc, 4) & 0xFFF) | 0xF000;
PHY_WRITE(sc, 4, val);
PHY_WRITE(sc, 3, 0xDF01);
PHY_WRITE(sc, 2, 0xDF20);
PHY_WRITE(sc, 1, 0xFF95);
PHY_WRITE(sc, 0, 0xBF00);
PHY_SETBIT(sc, 4, 0x0800);
PHY_CLRBIT(sc, 4, 0x0800);
PHY_WRITE(sc, 31, 0x0000);
#else
(void)val;
PHY_WRITE(sc, 0x1f, 0x0001);
PHY_WRITE(sc, 0x15, 0x1000);
PHY_WRITE(sc, 0x18, 0x65c7);
PHY_WRITE(sc, 0x04, 0x0000);
PHY_WRITE(sc, 0x03, 0x00a1);
PHY_WRITE(sc, 0x02, 0x0008);
PHY_WRITE(sc, 0x01, 0x1020);
PHY_WRITE(sc, 0x00, 0x1000);
PHY_WRITE(sc, 0x04, 0x0800);
PHY_WRITE(sc, 0x04, 0x0000);
PHY_WRITE(sc, 0x04, 0x7000);
PHY_WRITE(sc, 0x03, 0xff41);
PHY_WRITE(sc, 0x02, 0xde60);
PHY_WRITE(sc, 0x01, 0x0140);
PHY_WRITE(sc, 0x00, 0x0077);
PHY_WRITE(sc, 0x04, 0x7800);
PHY_WRITE(sc, 0x04, 0x7000);
PHY_WRITE(sc, 0x04, 0xa000);
PHY_WRITE(sc, 0x03, 0xdf01);
PHY_WRITE(sc, 0x02, 0xdf20);
PHY_WRITE(sc, 0x01, 0xff95);
PHY_WRITE(sc, 0x00, 0xfa00);
PHY_WRITE(sc, 0x04, 0xa800);
PHY_WRITE(sc, 0x04, 0xa000);
PHY_WRITE(sc, 0x04, 0xb000);
PHY_WRITE(sc, 0x0e, 0xff41);
PHY_WRITE(sc, 0x02, 0xde20);
PHY_WRITE(sc, 0x01, 0x0140);
PHY_WRITE(sc, 0x00, 0x00bb);
PHY_WRITE(sc, 0x04, 0xb800);
PHY_WRITE(sc, 0x04, 0xb000);
PHY_WRITE(sc, 0x04, 0xf000);
PHY_WRITE(sc, 0x03, 0xdf01);
PHY_WRITE(sc, 0x02, 0xdf20);
PHY_WRITE(sc, 0x01, 0xff95);
PHY_WRITE(sc, 0x00, 0xbf00);
PHY_WRITE(sc, 0x04, 0xf800);
PHY_WRITE(sc, 0x04, 0xf000);
PHY_WRITE(sc, 0x04, 0x0000);
PHY_WRITE(sc, 0x1f, 0x0000);
PHY_WRITE(sc, 0x0b, 0x0000);
#endif
DELAY(40);
}
static void
rgephy_reset(struct mii_softc *sc)
{
struct rgephy_softc *rsc;
uint16_t ssr;
mii_phy_reset(sc);
DELAY(1000);
rsc = (struct rgephy_softc *)sc;
if (rsc->mii_revision < 2) {
rgephy_load_dspcode(sc);
} else if (rsc->mii_revision == 3) {
/* RTL8211C(L) */
ssr = PHY_READ(sc, RGEPHY_MII_SSR);
if ((ssr & RGEPHY_SSR_ALDPS) != 0) {
ssr &= ~RGEPHY_SSR_ALDPS;
PHY_WRITE(sc, RGEPHY_MII_SSR, ssr);
}
} else {
PHY_WRITE(sc, 0x1F, 0x0000);
PHY_WRITE(sc, 0x0e, 0x0000);
}
/* Reset capabilities */
/* Step1: write our capability */
/* 10/100 capability */
PHY_WRITE(sc, MII_ANAR,
ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA);
/* 1000 capability */
PHY_WRITE(sc, MII_100T2CR, GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX);
/* Step2: Restart NWay */
/* NWay enable and Restart NWay */
PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN | BMCR_STARTNEG);
}
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