File: [local] / sys / dev / mii / ipgphy.c (download)
Revision 1.1, Tue Mar 4 16:12:49 2008 UTC (16 years, 3 months ago) by nbrk
Branch point for: MAIN
Initial revision
|
/* $OpenBSD: ipgphy.c,v 1.7 2006/12/31 15:04:33 krw Exp $ */
/*-
* Copyright (c) 2006, Pyun YongHyeon <yongari@FreeBSD.org>
* 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 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 <sys/errno.h>
#include <machine/bus.h>
#include <net/if.h>
#include <net/if_media.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/if_ether.h>
#endif
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/mii/miidevs.h>
#include <dev/mii/ipgphyreg.h>
#include <dev/pci/if_stgereg.h>
int ipgphy_probe(struct device *, void *, void *);
void ipgphy_attach(struct device *, struct device *, void *);
struct cfattach ipgphy_ca = {
sizeof(struct mii_softc), ipgphy_probe, ipgphy_attach, mii_phy_detach,
mii_phy_activate
};
struct cfdriver ipgphy_cd = {
NULL, "ipgphy", DV_DULL
};
int ipgphy_service(struct mii_softc *, struct mii_data *, int);
void ipgphy_status(struct mii_softc *);
int ipgphy_mii_phy_auto(struct mii_softc *);
void ipgphy_load_dspcode(struct mii_softc *);
void ipgphy_reset(struct mii_softc *);
const struct mii_phy_funcs ipgphy_funcs = {
ipgphy_service, ipgphy_status, ipgphy_reset,
};
static const struct mii_phydesc ipgphys[] = {
{ MII_OUI_ICPLUS, MII_MODEL_ICPLUS_IP1000A,
MII_STR_ICPLUS_IP1000A },
{ 0,
NULL },
};
int
ipgphy_probe(struct device *parent, void *match, void *aux)
{
struct mii_attach_args *ma = aux;
if (mii_phy_match(ma, ipgphys) != NULL)
return (10);
return (0);
}
void
ipgphy_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, ipgphys);
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 = &ipgphy_funcs;
sc->mii_pdata = mii;
sc->mii_anegticks = MII_ANEGTICKS_GIGE;
sc->mii_flags |= MIIF_NOISOLATE;
#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
BMCR_ISO);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst),
IPGPHY_BMCR_10);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst),
IPGPHY_BMCR_10 | IPGPHY_BMCR_FDX);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst),
IPGPHY_BMCR_100);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst),
IPGPHY_BMCR_100 | IPGPHY_BMCR_FDX);
/* 1000baseT half-duplex, really supported? */
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst),
IPGPHY_BMCR_1000);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, sc->mii_inst),
IPGPHY_BMCR_1000 | IPGPHY_BMCR_FDX);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
#undef ADD
PHY_RESET(sc);
}
int
ipgphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
uint32_t gig, reg, speed;
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, IPGPHY_MII_BMCR);
PHY_WRITE(sc, IPGPHY_MII_BMCR,
reg | IPGPHY_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:
(void)ipgphy_mii_phy_auto(sc);
goto done;
break;
case IFM_1000_T:
/*
* XXX
* Manual 1000baseT setting doesn't seem to work.
*/
speed = IPGPHY_BMCR_1000;
break;
case IFM_100_TX:
speed = IPGPHY_BMCR_100;
break;
case IFM_10_T:
speed = IPGPHY_BMCR_10;
break;
default:
return (EINVAL);
}
if (((ife->ifm_media & IFM_GMASK) & IFM_FDX) != 0) {
speed |= IPGPHY_BMCR_FDX;
gig = IPGPHY_1000CR_1000T_FDX;
} else
gig = IPGPHY_1000CR_1000T;
PHY_WRITE(sc, IPGPHY_MII_1000CR, 0);
PHY_WRITE(sc, IPGPHY_MII_BMCR, speed);
if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T)
break;
PHY_WRITE(sc, IPGPHY_MII_1000CR, gig);
PHY_WRITE(sc, IPGPHY_MII_BMCR, speed);
if (mii->mii_media.ifm_media & IFM_ETH_MASTER)
gig |= IPGPHY_1000CR_MASTER | IPGPHY_1000CR_MANUAL;
PHY_WRITE(sc, IPGPHY_MII_1000CR, gig);
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) {
sc->mii_ticks = 0;
break;
}
/*
* check for link.
*/
reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
if (reg & BMSR_LINK) {
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);
sc->mii_ticks = 0;
ipgphy_mii_phy_auto(sc);
break;
}
/* Update the media status. */
mii_phy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}
void
ipgphy_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
uint32_t bmsr, bmcr, stat;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmsr = PHY_READ(sc, IPGPHY_MII_BMSR) |
PHY_READ(sc, IPGPHY_MII_BMSR);
if ((bmsr & IPGPHY_BMSR_LINK) != 0)
mii->mii_media_status |= IFM_ACTIVE;
bmcr = PHY_READ(sc, IPGPHY_MII_BMCR);
if ((bmcr & IPGPHY_BMCR_LOOP) != 0)
mii->mii_media_active |= IFM_LOOP;
if ((bmcr & IPGPHY_BMCR_AUTOEN) != 0) {
if ((bmsr & IPGPHY_BMSR_ANEGCOMP) == 0) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
}
stat = PHY_READ(sc, STGE_PhyCtrl);
switch (PC_LinkSpeed(stat)) {
case PC_LinkSpeed_Down:
mii->mii_media_active |= IFM_NONE;
return;
case PC_LinkSpeed_10:
mii->mii_media_active |= IFM_10_T;
break;
case PC_LinkSpeed_100:
mii->mii_media_active |= IFM_100_TX;
break;
case PC_LinkSpeed_1000:
mii->mii_media_active |= IFM_1000_T;
break;
}
if ((stat & PC_PhyDuplexStatus) != 0)
mii->mii_media_active |= mii_phy_flowstatus(sc) | IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
stat = PHY_READ(sc, IPGPHY_MII_1000SR);
if ((IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) &&
stat & IPGPHY_1000SR_MASTER)
mii->mii_media_active |= IFM_ETH_MASTER;
}
int
ipgphy_mii_phy_auto(struct mii_softc *mii)
{
uint32_t reg;
reg = IPGPHY_ANAR_10T | IPGPHY_ANAR_10T_FDX |
IPGPHY_ANAR_100TX | IPGPHY_ANAR_100TX_FDX;
if (sc->mii_flags & MIIF_DOPAUSE)
reg |= IPGPHY_ANAR_PAUSE | IPGPHY_ANAR_APAUSE;
PHY_WRITE(mii, IPGPHY_MII_ANAR, reg);
reg = IPGPHY_1000CR_1000T | IPGPHY_1000CR_1000T_FDX;
reg |= IPGPHY_1000CR_MASTER;
PHY_WRITE(mii, IPGPHY_MII_1000CR, reg);
PHY_WRITE(mii, IPGPHY_MII_BMCR, (IPGPHY_BMCR_FDX |
IPGPHY_BMCR_AUTOEN | IPGPHY_BMCR_STARTNEG));
return (EJUSTRETURN);
}
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);
}
void
ipgphy_reset(struct mii_softc *sc)
{
struct stge_softc *stge_sc;
struct ifnet *ifp;
uint32_t reg;
mii_phy_reset(sc);
/* clear autoneg/full-duplex as we don't want it after reset */
reg = PHY_READ(sc, IPGPHY_MII_BMCR);
reg &= ~(IPGPHY_BMCR_AUTOEN | IPGPHY_BMCR_FDX);
PHY_WRITE(sc, MII_BMCR, reg);
ifp = sc->mii_pdata->mii_ifp;
if (strcmp(ifp->if_xname, "stge") == 0) {
stge_sc = ifp->if_softc;
if (stge_sc->sc_rev >= 0x40 && stge_sc->sc_rev <= 0x4e)
ipgphy_load_dspcode(sc);
}
}