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/* $OpenBSD: bmtphy.c,v 1.22 2023/03/04 22:34:37 kettenis Exp $ */
/* $NetBSD: bmtphy.c,v 1.17 2005/01/17 13:17:45 scw Exp $ */
/*
* Copyright (c) 2001 Theo de Raadt
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Driver for 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/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <net/if.h>
#include <net/if_var.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>
int bmtphymatch(struct device *, void *, void *);
void bmtphyattach(struct device *, struct device *, void *);
const struct cfattach bmtphy_ca = {
sizeof(struct mii_softc), bmtphymatch, bmtphyattach, mii_phy_detach
};
struct cfdriver bmtphy_cd = {
NULL, "bmtphy", DV_DULL
};
int bmtphy_service(struct mii_softc *, struct mii_data *, int);
void bmtphy_status(struct mii_softc *);
void bmtphy_reset(struct mii_softc *);
const struct mii_phy_funcs bmtphy_funcs = {
bmtphy_service, bmtphy_status, bmtphy_reset,
};
static const struct mii_phydesc bmtphys[] = {
{ MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905B,
MII_STR_BROADCOM_3C905B },
{ MII_OUI_BROADCOM, MII_MODEL_BROADCOM_3C905C,
MII_STR_BROADCOM_3C905C },
{ MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM4401,
MII_STR_BROADCOM_BCM4401 },
{ MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5201,
MII_STR_BROADCOM_BCM5201 },
{ MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5214,
MII_STR_BROADCOM_BCM5214 },
{ MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5220,
MII_STR_BROADCOM_BCM5220 },
{ MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5221,
MII_STR_BROADCOM_BCM5221 },
{ MII_OUI_BROADCOM, MII_MODEL_BROADCOM_BCM5222,
MII_STR_BROADCOM_BCM5222 },
{ 0, 0,
NULL },
};
int
bmtphymatch(struct device *parent, void *match, void *aux)
{
struct mii_attach_args *ma = aux;
if (mii_phy_match(ma, bmtphys) != NULL)
return (10);
return (0);
}
void
bmtphyattach(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, bmtphys);
printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
sc->mii_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?
*/
sc->mii_capabilities =
PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
if (sc->mii_capabilities & BMSR_MEDIAMASK)
mii_phy_add_media(sc);
}
int
bmtphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int reg;
if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
return (ENXIO);
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;
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);
}
void
bmtphy_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int bmsr, bmcr, aux_csr;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
if (bmsr & BMSR_LINK)
mii->mii_media_status |= IFM_ACTIVE;
bmcr = PHY_READ(sc, MII_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 later 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;
}
aux_csr = PHY_READ(sc, MII_BMTPHY_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 |= mii_phy_flowstatus(sc) | IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
} else
mii->mii_media_active = ife->ifm_media;
}
void
bmtphy_reset(struct mii_softc *sc)
{
u_int16_t data;
mii_phy_reset(sc);
if (sc->mii_model == MII_MODEL_BROADCOM_BCM5221) {
/* Enable shadow register mode */
data = PHY_READ(sc, 0x1f);
PHY_WRITE(sc, 0x1f, data | 0x0080);
/* Enable APD (Auto PowerDetect) */
data = PHY_READ(sc, MII_BMTPHY_AUX2);
PHY_WRITE(sc, MII_BMTPHY_AUX2, data | 0x0020);
/* Enable clocks across APD for
* Auto-MDIX functionality */
data = PHY_READ(sc, MII_BMTPHY_INTR);
PHY_WRITE(sc, MII_BMTPHY_INTR, data | 0x0004);
/* Disable shadow register mode */
data = PHY_READ(sc, 0x1f);
PHY_WRITE(sc, 0x1f, data & ~0x0080);
}
}
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