driver for BCM5201/5202 PHY

4 files changed, 285 insertions, 3 deletions

diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index 55227ff0bbd..6b89d464a68 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -1,9 +1,10 @@
-#	$OpenBSD: Makefile,v 1.156 2001/03/29 14:32:35 aaron Exp $
+#	$OpenBSD: Makefile,v 1.157 2001/04/11 06:47:32 deraadt Exp $
 
 MAN=	aac.4 ac97.4 adv.4 aha.4 ahb.4 ahc.4 aic.4 ami.4 amphy.4 an.4 \
 	aria.4 ast.4 \
 	atalk.4 atapiscsi.4 audio.4 aue.4 auvia.4 awi.4 bpf.4 bridge.4 \
-	brgphy.4 cac.4 cardbus.4 ccd.4 cd.4 ch.4 clnp.4 clcs.4 clct.4 cltp.4 \
+	bmtphy.4 brgphy.4 cac.4 cardbus.4 ccd.4 cd.4 \
+	ch.4 clnp.4 clcs.4 clct.4 cltp.4 \
 	cmpci.4 cnw.4 com.4 cue.4 cy.4 dc.4 ddb.4 de.4 dpt.4 drum.4 eap.4 ec.4 \
 	ef.4 eg.4 el.4 enc.4 ep.4 esis.4 eso.4 ess.4 exphy.4 fd.4 fdc.4 fpa.4 \
 	fms.4 fxp.4 gdt.4 gre.4 hifn.4 hsq.4 auich.4 icmp.4 icsphy.4 \
diff --git a/sys/dev/mii/bmtphy.c b/sys/dev/mii/bmtphy.c
new file mode 100644
index 00000000000..7a3a86a77bf
--- /dev/null
+++ b/sys/dev/mii/bmtphy.c
@@ -0,0 +1,244 @@
+/*	$OpenBSD: bmtphy.c,v 1.1 2001/04/11 06:47:31 deraadt Exp $	*/
+/*	$NetBSD: nsphy.c,v 1.25 2000/02/02 23:34:57 thorpej Exp $	*/
+
+/*
+ * driver for Broadcom BCM5201/5202 Mini-Theta ethernet 10/100 PHY
+ * Data Sheet available from Broadcom
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+#include <sys/socket.h>
+#include <sys/errno.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/bmtphyreg.h>
+
+int	bmtphymatch __P((struct device *, void *, void *));
+void	bmtphyattach __P((struct device *, struct device *, void *));
+
+struct cfattach bmtphy_ca = {
+	sizeof(struct mii_softc), bmtphymatch, bmtphyattach, mii_phy_detach,
+	    mii_phy_activate
+};
+
+struct cfdriver bmtphy_cd = {
+	NULL, "bmtphy", DV_DULL
+};
+
+int	bmtphy_service __P((struct mii_softc *, struct mii_data *, int));
+void	bmtphy_status __P((struct mii_softc *));
+void	bmtphy_reset __P((struct mii_softc *));
+
+int
+bmtphymatch(parent, match, aux)
+	struct device *parent;
+	void *match;
+	void *aux;
+{
+	struct mii_attach_args *ma = aux;
+
+	if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_BROADCOM &&
+	    MII_MODEL(ma->mii_id2) == MII_MODEL_BROADCOM_BCM5201)
+		return (10);
+
+	return (0);
+}
+
+void
+bmtphyattach(parent, self, aux)
+	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;
+
+	printf(": %s, rev. %d\n", MII_STR_BROADCOM_BCM5201,
+	    MII_REV(ma->mii_id2));
+
+	sc->mii_inst = mii->mii_instance;
+	sc->mii_phy = ma->mii_phyno;
+	sc->mii_service = bmtphy_service;
+	sc->mii_status = bmtphy_status;
+	sc->mii_pdata = mii;
+	sc->mii_flags = mii->mii_flags;
+
+	bmtphy_reset(sc);
+
+	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(sc, mii, cmd)
+	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);
+
+		/*
+		 * Only used for autonegotiation.
+		 */
+		if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
+			return (0);
+
+		/*
+		 * Is the interface even up?
+		 */
+		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
+			return (0);
+
+		/*
+		 * 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.
+		 */
+		reg = PHY_READ(sc, MII_BMSR) |
+		    PHY_READ(sc, MII_BMSR);
+		if (reg & BMSR_LINK)
+			return (0);
+
+		/*
+		 * Only retry autonegotiation every 5 seconds.
+		 */
+		if (++sc->mii_ticks != 5)
+			return (0);
+
+		sc->mii_ticks = 0;
+		bmtphy_reset(sc);
+		if (mii_phy_auto(sc, 0) == 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(sc)
+	struct mii_softc *sc;
+{
+	struct mii_data *mii = sc->mii_pdata;
+	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
+	int bmsr, bmcr, auxc;
+
+	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;
+		}
+
+		auxc = PHY_READ(sc, MII_BMTPHY_AUXC);
+		if (auxc & AUXC_SP100)
+			mii->mii_media_active |= IFM_100_TX;
+		else
+			mii->mii_media_active |= IFM_10_T;
+		if (auxc & AUXC_FDX)
+			mii->mii_media_active |= IFM_FDX;
+
+	} else
+		mii->mii_media_active = ife->ifm_media;
+}
+
+void
+bmtphy_reset(sc)
+	struct mii_softc *sc;
+{
+	int anar;
+
+	mii_phy_reset(sc);
+
+	anar = PHY_READ(sc, MII_ANAR);
+	anar |= BMSR_MEDIA_TO_ANAR(PHY_READ(sc, MII_BMSR));
+	PHY_WRITE(sc, MII_ANAR, anar);
+
+        /* Chip resets with FDX bit not set */
+        PHY_WRITE(sc, MII_BMCR, PHY_READ(sc, MII_BMCR) |
+	    BMCR_S100|BMCR_AUTOEN|BMCR_STARTNEG|BMCR_FDX);
+}
diff --git a/sys/dev/mii/bmtphyreg.h b/sys/dev/mii/bmtphyreg.h
new file mode 100644
index 00000000000..e0824e6fe9f
--- /dev/null
+++ b/sys/dev/mii/bmtphyreg.h
@@ -0,0 +1,33 @@
+/*	$OpenBSD: bmtphyreg.h,v 1.1 2001/04/11 06:47:31 deraadt Exp $	*/
+/*	$NetBSD: bmtphyreg.h,v 1.1 1998/08/10 23:58:39 thorpej Exp $	*/
+
+#ifndef _DEV_MII_BMTPHYREG_H_
+#define	_DEV_MII_BMTPHYREG_H_
+
+#define	MII_BMTPHY_100RCVERR	0x12	/* 100base-X rcv error counter */
+
+#define	MII_BMTPHY_FCSCR	0x13	/* 100base-X false carrier counter */
+
+#define	MII_BMTPHY_100DISC	0x14	/* 100base-X rcv error counter */
+
+#define	MII_BMTPHY_TXEQUAL	0x15	/* TX equalizer coefficient */
+
+#define	MII_BMTPHY_TXEQCTRL	0x16	/* TX equalizer control */
+
+#define	MII_BMTPHY_PTEST	0x17	/* PTEST */
+
+#define	MII_BMTPHY_AUXC		0x18	/* Aux control/status */
+#define	AUXC_FORCELINK		0x4000	/* */
+#define	AUXC_AUTONEG		0x0010	/* */
+#define	AUXC_FORCE100		0x0004	/* Force 100 indicator */
+#define	AUXC_SP100		0x0002	/* SP100 indicator */
+#define AUXC_FDX		0x0001	/* Full duplex indicator */
+
+#define	MII_BMTPHY_AUXS		0x19	/* Aux status summary */
+#define	AUXS_SP100		0x0008	/* */
+#define	AUXS_LINKSTATUS		0x0004	/* */
+
+#define MII_BMTPHY_AUX2		0x1b	/* aux mode 2 */
+#define AUX2_TWOLNKLED		0x0004	/* Two link led mode */
+
+#endif /* _DEV_MII_BMTPHYREG_H_ */
diff --git a/sys/dev/mii/files.mii b/sys/dev/mii/files.mii
index d92db511918..a343edead21 100644
--- a/sys/dev/mii/files.mii
+++ b/sys/dev/mii/files.mii
@@ -1,4 +1,4 @@
-#	$OpenBSD: files.mii,v 1.14 2000/10/17 19:10:31 jason Exp $
+#	$OpenBSD: files.mii,v 1.15 2001/04/11 06:47:31 deraadt Exp $
 #	$NetBSD: files.mii,v 1.13 1998/11/05 00:36:48 thorpej Exp $
 
 file    dev/mii/mii.c				mii
@@ -73,6 +73,10 @@ device dcphy: mii_phy
 attach dcphy at mii
 file dev/mii/dcphy.c				dcphy
 
+device bmtphy: mii_phy
+attach bmtphy at mii
+file dev/mii/bmtphy.c				bmtphy
+
 device brgphy: mii_phy
 attach brgphy at mii
 file dev/mii/brgphy.c				brgphy