OpenBSD-4.6/sys/dev/mii/etphy.c
/* $OpenBSD: etphy.c,v 1.4 2008/04/02 20:12:58 brad Exp $ */
/*
* Copyright (c) 2007 The DragonFly Project. All rights reserved.
*
* This code is derived from software contributed to The DragonFly Project
* by Sepherosa Ziehau <sepherosa@gmail.com>
*
* 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 DragonFly Project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific, prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDERS 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.
*
* $DragonFly: src/sys/dev/netif/mii_layer/truephy.c,v 1.1 2007/10/12 14:12:42 sephe Exp $
*/
#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>
#define ETPHY_INDEX 0x10 /* XXX reserved in DS */
#define ETPHY_INDEX_MAGIC 0x402
#define ETPHY_DATA 0x11 /* XXX reserved in DS */
#define ETPHY_CTRL 0x12
#define ETPHY_CTRL_DIAG 0x0004
#define ETPHY_CTRL_RSV1 0x0002 /* XXX reserved */
#define ETPHY_CTRL_RSV0 0x0001 /* XXX reserved */
#define ETPHY_CONF 0x16
#define ETPHY_CONF_TXFIFO_MASK 0x3000
#define ETPHY_CONF_TXFIFO_8 0x0000
#define ETPHY_CONF_TXFIFO_16 0x1000
#define ETPHY_CONF_TXFIFO_24 0x2000
#define ETPHY_CONF_TXFIFO_32 0x3000
#define ETPHY_SR 0x1a
#define ETPHY_SR_SPD_MASK 0x0300
#define ETPHY_SR_SPD_1000T 0x0200
#define ETPHY_SR_SPD_100TX 0x0100
#define ETPHY_SR_SPD_10T 0x0000
#define ETPHY_SR_FDX 0x0080
int etphy_service(struct mii_softc *, struct mii_data *, int);
void etphy_attach(struct device *, struct device *, void *);
int etphy_match(struct device *, void *, void *);
void etphy_reset(struct mii_softc *);
void etphy_status(struct mii_softc *);
const struct mii_phy_funcs etphy_funcs = {
etphy_service, etphy_status, etphy_reset,
};
static const struct mii_phydesc etphys[] = {
{ MII_OUI_AGERE, MII_MODEL_AGERE_ET1011,
MII_STR_AGERE_ET1011 },
{ 0, 0,
NULL },
};
struct cfattach etphy_ca = {
sizeof (struct mii_softc), etphy_match, etphy_attach,
mii_phy_detach, mii_phy_activate
};
struct cfdriver etphy_cd = {
NULL, "etphy", DV_DULL
};
static const struct etphy_dsp {
uint16_t index;
uint16_t data;
} etphy_dspcode[] = {
{ 0x880b, 0x0926 }, /* AfeIfCreg4B1000Msbs */
{ 0x880c, 0x0926 }, /* AfeIfCreg4B100Msbs */
{ 0x880d, 0x0926 }, /* AfeIfCreg4B10Msbs */
{ 0x880e, 0xb4d3 }, /* AfeIfCreg4B1000Lsbs */
{ 0x880f, 0xb4d3 }, /* AfeIfCreg4B100Lsbs */
{ 0x8810, 0xb4d3 }, /* AfeIfCreg4B10Lsbs */
{ 0x8805, 0xb03e }, /* AfeIfCreg3B1000Msbs */
{ 0x8806, 0xb03e }, /* AfeIfCreg3B100Msbs */
{ 0x8807, 0xff00 }, /* AfeIfCreg3B10Msbs */
{ 0x8808, 0xe090 }, /* AfeIfCreg3B1000Lsbs */
{ 0x8809, 0xe110 }, /* AfeIfCreg3B100Lsbs */
{ 0x880a, 0x0000 }, /* AfeIfCreg3B10Lsbs */
{ 0x300d, 1 }, /* DisableNorm */
{ 0x280c, 0x0180 }, /* LinkHoldEnd */
{ 0x1c21, 0x0002 }, /* AlphaM */
{ 0x3821, 6 }, /* FfeLkgTx0 */
{ 0x381d, 1 }, /* FfeLkg1g4 */
{ 0x381e, 1 }, /* FfeLkg1g5 */
{ 0x381f, 1 }, /* FfeLkg1g6 */
{ 0x3820, 1 }, /* FfeLkg1g7 */
{ 0x8402, 0x01f0 }, /* Btinact */
{ 0x800e, 20 }, /* LftrainTime */
{ 0x800f, 24 }, /* DvguardTime */
{ 0x8010, 46 } /* IdlguardTime */
};
int
etphy_match(struct device *parent, void *match, void *aux)
{
struct mii_attach_args *ma = aux;
if (mii_phy_match(ma, etphys) != NULL)
return (10);
return (0);
}
void
etphy_attach(struct device *parent, struct device *self, void *aux)
{
struct mii_softc *sc = (struct mii_softc *)self;
struct mii_attach_args *ma = aux;
struct mii_data *mii = ma->mii_data;
const struct mii_phydesc *mpd;
mpd = mii_phy_match(ma, etphys);
printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
sc->mii_funcs = &etphy_funcs;
sc->mii_model = MII_MODEL(ma->mii_id2);
sc->mii_pdata = mii;
sc->mii_flags = ma->mii_flags;
sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP;
PHY_RESET(sc);
sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
if (sc->mii_capabilities & BMSR_EXTSTAT) {
sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
/* No 1000baseT half-duplex support */
sc->mii_extcapabilities &= ~EXTSR_1000THDX;
}
mii_phy_add_media(sc);
}
int
etphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int bmcr;
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) {
bmcr = PHY_READ(sc, MII_BMCR);
PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO);
return 0;
}
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
break;
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
bmcr = PHY_READ(sc, MII_BMCR) & ~BMCR_AUTOEN;
PHY_WRITE(sc, MII_BMCR, bmcr);
PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_PDOWN);
}
mii_phy_setmedia(sc);
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
bmcr = PHY_READ(sc, MII_BMCR) & ~BMCR_PDOWN;
PHY_WRITE(sc, MII_BMCR, bmcr);
if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
PHY_WRITE(sc, MII_BMCR,
bmcr | BMCR_AUTOEN | BMCR_STARTNEG);
}
}
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;
}
/* Update the media status. */
mii_phy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return 0;
}
void
etphy_reset(struct mii_softc *sc)
{
int i;
for (i = 0; i < 2; ++i) {
PHY_READ(sc, MII_PHYIDR1);
PHY_READ(sc, MII_PHYIDR2);
PHY_READ(sc, ETPHY_CTRL);
PHY_WRITE(sc, ETPHY_CTRL,
ETPHY_CTRL_DIAG | ETPHY_CTRL_RSV1);
PHY_WRITE(sc, ETPHY_INDEX, ETPHY_INDEX_MAGIC);
PHY_READ(sc, ETPHY_DATA);
PHY_WRITE(sc, ETPHY_CTRL, ETPHY_CTRL_RSV1);
}
PHY_READ(sc, MII_BMCR);
PHY_READ(sc, ETPHY_CTRL);
PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_PDOWN | BMCR_S1000);
PHY_WRITE(sc, ETPHY_CTRL,
ETPHY_CTRL_DIAG | ETPHY_CTRL_RSV1 | ETPHY_CTRL_RSV0);
#define N(arr) (int)(sizeof(arr) / sizeof(arr[0]))
for (i = 0; i < N(etphy_dspcode); ++i) {
const struct etphy_dsp *dsp = &etphy_dspcode[i];
PHY_WRITE(sc, ETPHY_INDEX, dsp->index);
PHY_WRITE(sc, ETPHY_DATA, dsp->data);
PHY_WRITE(sc, ETPHY_INDEX, dsp->index);
PHY_READ(sc, ETPHY_DATA);
}
#undef N
PHY_READ(sc, MII_BMCR);
PHY_READ(sc, ETPHY_CTRL);
PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_S1000);
PHY_WRITE(sc, ETPHY_CTRL, ETPHY_CTRL_RSV1);
mii_phy_reset(sc);
}
void
etphy_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
int bmsr, bmcr, sr;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
sr = PHY_READ(sc, ETPHY_SR);
bmcr = PHY_READ(sc, MII_BMCR);
bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
if (bmsr & BMSR_LINK)
mii->mii_media_status |= IFM_ACTIVE;
if (bmcr & BMCR_AUTOEN) {
if ((bmsr & BMSR_ACOMP) == 0) {
mii->mii_media_active |= IFM_NONE;
return;
}
}
switch (sr & ETPHY_SR_SPD_MASK) {
case ETPHY_SR_SPD_1000T:
mii->mii_media_active |= IFM_1000_T;
break;
case ETPHY_SR_SPD_100TX:
mii->mii_media_active |= IFM_100_TX;
break;
case ETPHY_SR_SPD_10T:
mii->mii_media_active |= IFM_10_T;
break;
default:
mii->mii_media_active |= IFM_NONE;
return;
}
if (sr & ETPHY_SR_FDX)
mii->mii_media_active |= IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
}