svn commit: r217415 - head/sys/dev/mii
Marius Strobl
marius at FreeBSD.org
Fri Jan 14 19:39:12 UTC 2011
Author: marius
Date: Fri Jan 14 19:39:12 2011
New Revision: 217415
URL: http://svn.freebsd.org/changeset/base/217415
Log:
- Allow IFM_FLAG0 to be set indicating that auto-negotiation with manual
configuration, which is used to work around issues with certain setups
(see r161237) by default, should not be triggered as it may in turn
cause harm in some edge cases.
- Even after masking the media with IFM_GMASK the result may have bits
besides the duplex ones set so just comparing it with IFM_FDX may lead
to false negatives.
- Announce PAUSE support also for manually selected 1000BASE-T, but for
all manually selected media types only in full-duplex mode. Announce
asymmetric PAUSE support only for manually selected 1000BASE-T.
- Simplify setting the manual configuration bits to only once after we
have figured them all out. This also means we no longer unnecessarily
update the hardware along the road.
- Remove a stale comment.
Reviewed by: yongari (plus additional testing)
MFC after: 3 days
Modified:
head/sys/dev/mii/rgephy.c
Modified: head/sys/dev/mii/rgephy.c
==============================================================================
--- head/sys/dev/mii/rgephy.c Fri Jan 14 19:33:58 2011 (r217414)
+++ head/sys/dev/mii/rgephy.c Fri Jan 14 19:39:12 2011 (r217415)
@@ -146,6 +146,13 @@ rgephy_attach(device_t dev)
mii_phy_add_media(sc);
printf("\n");
#undef ADD
+ /*
+ * Allow IFM_FLAG0 to be set indicating that auto-negotiation with
+ * manual configuration, which is used to work around issues with
+ * certain setups by default, should not be triggered as it may in
+ * turn cause harm in some edge cases.
+ */
+ mii->mii_media.ifm_mask |= IFM_FLAG0;
rgephy_reset(sc);
MIIBUS_MEDIAINIT(sc->mii_dev);
@@ -201,37 +208,38 @@ rgephy_service(struct mii_softc *sc, str
speed = RGEPHY_S10;
anar |= RGEPHY_ANAR_10_FD | RGEPHY_ANAR_10;
setit:
- rgephy_loop(sc);
- if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
+ if ((ife->ifm_media & IFM_FLOW) != 0 &&
+ (mii->mii_media.ifm_media & IFM_FLAG0) != 0)
+ return (EINVAL);
+
+ if ((ife->ifm_media & IFM_FDX) != 0) {
speed |= RGEPHY_BMCR_FDX;
gig = RGEPHY_1000CTL_AFD;
anar &= ~(RGEPHY_ANAR_TX | RGEPHY_ANAR_10);
+ if ((ife->ifm_media & IFM_FLOW) != 0 ||
+ (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
+ anar |=
+ RGEPHY_ANAR_PC | RGEPHY_ANAR_ASP;
} else {
gig = RGEPHY_1000CTL_AHD;
anar &=
~(RGEPHY_ANAR_TX_FD | RGEPHY_ANAR_10_FD);
}
-
- if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) {
- PHY_WRITE(sc, RGEPHY_MII_1000CTL, 0);
- PHY_WRITE(sc, RGEPHY_MII_ANAR, anar);
- PHY_WRITE(sc, RGEPHY_MII_BMCR, speed |
- RGEPHY_BMCR_AUTOEN |
- RGEPHY_BMCR_STARTNEG);
- break;
+ if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
+ gig |= RGEPHY_1000CTL_MSE;
+ if ((ife->ifm_media & IFM_ETH_MASTER) != 0)
+ gig |= RGEPHY_1000CTL_MSC;
+ } else {
+ gig = 0;
+ anar &= ~RGEPHY_ANAR_ASP;
}
-
- if ((ife->ifm_media & IFM_FLOW) != 0 ||
- (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
- anar |= RGEPHY_ANAR_PC | RGEPHY_ANAR_ASP;
-
- gig |= RGEPHY_1000CTL_MSE;
- if ((ife->ifm_media & IFM_ETH_MASTER) != 0)
- gig |= RGEPHY_1000CTL_MSC;
+ if ((mii->mii_media.ifm_media & IFM_FLAG0) == 0)
+ speed |=
+ RGEPHY_BMCR_AUTOEN | RGEPHY_BMCR_STARTNEG;
+ rgephy_loop(sc);
PHY_WRITE(sc, RGEPHY_MII_1000CTL, gig);
PHY_WRITE(sc, RGEPHY_MII_ANAR, anar);
- PHY_WRITE(sc, RGEPHY_MII_BMCR, speed |
- RGEPHY_BMCR_AUTOEN | RGEPHY_BMCR_STARTNEG);
+ PHY_WRITE(sc, RGEPHY_MII_BMCR, speed);
break;
case IFM_NONE:
PHY_WRITE(sc, MII_BMCR, BMCR_ISO | BMCR_PDOWN);
@@ -258,8 +266,7 @@ setit:
/*
* 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.
+ * need to restart the autonegotiation process.
*/
if (rsc->mii_revision >= 2) {
/* RTL8211B(L) */
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