driver for amphy from freebsd; aaron ok

3 files changed, 340 insertions, 1 deletions

diff --git a/sys/dev/mii/amphy.c b/sys/dev/mii/amphy.c
new file mode 100644
index 00000000000..b986d83de8f
--- /dev/null
+++ b/sys/dev/mii/amphy.c
@@ -0,0 +1,249 @@
+/*	$OpenBSD: amphy.c,v 1.1 2000/10/17 15:59:09 jason Exp $	*/
+
+/*
+ * Copyright (c) 1997, 1998, 1999
+ *	Bill Paul <wpaul@ee.columbia.edu>.  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, 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Bill Paul.
+ * 4. Neither the name of the author nor the names of any co-contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
+ * 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.
+ *
+ * $FreeBSD: src/sys/dev/mii/amphy.c,v 1.3 2000/04/19 14:57:29 phk Exp $
+ */
+
+/*
+ * driver for AMD AM79c873 PHYs
+ * This driver also works for the Davicom DM9101 PHY, which appears to
+ * be an AM79c873 workalike.
+ */
+
+#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 <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/amphyreg.h>
+
+int	amphymatch __P((struct device *, void *, void *));
+void	amphyattach __P((struct device *, struct device *, void *));
+
+struct cfattach amphy_ca = {
+	sizeof(struct mii_softc), amphymatch, amphyattach, mii_phy_detach,
+	    mii_phy_activate
+};
+
+struct cfdriver amphy_cd = {
+	NULL, "amphy", DV_DULL
+};
+
+int	amphy_service __P((struct mii_softc *, struct mii_data *, int));
+void	amphy_status __P((struct mii_softc *));
+
+int
+amphymatch(parent, match, aux)
+	struct device *parent;
+	void *match, *aux;
+{
+	struct mii_attach_args *ma = aux;
+
+	if ((MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxAMD &&
+	    MII_MODEL(ma->mii_id2) == MII_MODEL_xxAMD_79C873) ||
+	    (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxDAVICOM ||
+	    MII_MODEL(ma->mii_id2) == MII_MODEL_xxDAVICOM_DM9101))
+		return(10);
+
+	return(0);
+}
+
+void
+amphyattach(parent, self, aux)
+	struct device *parent, *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_xxAMD_79C873,
+	    MII_REV(ma->mii_id2));
+
+	sc->mii_inst = mii->mii_instance;
+	sc->mii_phy = ma->mii_phyno;
+	sc->mii_service = amphy_service;
+	sc->mii_status = amphy_status;
+	sc->mii_pdata = mii;
+	sc->mii_flags = mii->mii_flags;
+
+	sc->mii_flags |= MIIF_NOISOLATE;
+
+	mii_phy_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
+amphy_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;
+
+	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. */
+	amphy_status(sc);
+
+	/* Callback if something changed. */
+	mii_phy_update(sc, cmd);
+	return (0);
+}
+
+void
+amphy_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, par, anlpar;
+
+	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 PAR status bits are only valid of autonegotiation
+		 * has completed (or it's disabled).
+		 */
+		if ((bmsr & BMSR_ACOMP) == 0) {
+			/* Erg, still trying, I guess... */
+			mii->mii_media_active |= IFM_NONE;
+			return;
+		}
+
+		if (PHY_READ(sc, MII_ANER) & ANER_LPAN) {
+			anlpar = PHY_READ(sc, MII_ANAR) &
+			    PHY_READ(sc, MII_ANLPAR);
+			if (anlpar & ANLPAR_T4)
+				mii->mii_media_active |= IFM_100_T4;
+			else if (anlpar & ANLPAR_TX_FD)
+				mii->mii_media_active |= IFM_100_TX|IFM_FDX;
+			else if (anlpar & ANLPAR_TX)
+				mii->mii_media_active |= IFM_100_TX;
+			else if (anlpar & ANLPAR_10_FD)
+				mii->mii_media_active |= IFM_10_T|IFM_FDX;
+			else if (anlpar & ANLPAR_10)
+				mii->mii_media_active |= IFM_10_T;
+			else
+				mii->mii_media_active |= IFM_NONE;
+			return;
+		}
+
+		/*
+		 * Link partner is not capable of autonegotiation.
+		 */
+		par = PHY_READ(sc, MII_AMPHY_DSCSR);
+		if (par & DSCSR_100FDX)
+			mii->mii_media_active |= IFM_100_TX|IFM_FDX;
+		else if (par & DSCSR_100HDX)
+			mii->mii_media_active |= IFM_100_TX;
+		else if (par & DSCSR_10FDX)
+			mii->mii_media_active |= IFM_10_T|IFM_HDX;
+		else if (par & DSCSR_10HDX)
+			mii->mii_media_active |= IFM_10_T;
+	} else
+		mii->mii_media_active = ife->ifm_media;
+}
diff --git a/sys/dev/mii/amphyreg.h b/sys/dev/mii/amphyreg.h
new file mode 100644
index 00000000000..f7d75c60f77
--- /dev/null
+++ b/sys/dev/mii/amphyreg.h
@@ -0,0 +1,86 @@
+/*	$OpenBSD: amphyreg.h,v 1.1 2000/10/17 15:59:10 jason Exp $	*/
+
+/*
+ * Copyright (c) 1997, 1998, 1999
+ *	Bill Paul <wpaul@ee.columbia.edu>.  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, 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Bill Paul.
+ * 4. Neither the name of the author nor the names of any co-contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
+ * 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.
+ *
+ * $FreeBSD: src/sys/dev/mii/amphyreg.h,v 1.1 1999/09/06 05:27:55 wpaul Exp $
+ */
+
+#ifndef _DEV_MII_AMTPHYREG_H_
+#define	_DEV_MII_AMTPHYREG_H_
+
+/*
+ * AMD Am79C873 registers.
+ */
+
+
+#define MII_AMPHY_DSCR		0x10	/* Specified configuration register */a
+#define DSCR_BP4B5B		0x8000	/* Bypass 4B5B encoding */
+#define DSCR_BPSCR		0x4000	/* Bypass scrambler */
+#define DSCR_BPALIGN		0x2000	/* Bypass symbol alignment */
+#define DSCR_REPEATER		0x0800	/* Repeater mode */
+#define DSCR_TX			0x0400	/* TX/FX mode control */
+#define DSCR_UTP		0x0200	/* UTP/STP mode control */
+#define DSCR_CLK25MDIS		0x0100	/* CLK25M disable */
+#define DSCR_FGLNKTX		0x0080	/* Force good link at 100baseTX */
+#define DSCR_LINKLEDCTL		0x0020	/* Link LED control */
+#define DSCR_FDXLEDCTL		0x0010	/* FDX LED control */
+#define DSCR_SMRTS		0x0008	/* Reset state machine */
+#define DSCR_MFPSC		0x0004	/* Preamble surpression control */
+#define DSCR_SLEEP		0x0002	/* Sleep mode */
+#define DSCR_RLOUT		0x0001	/* Remote loopout control */
+
+#define MII_AMPHY_DSCSR		0x11	/* Specified configuration and status */
+#define DSCSR_100FDX		0x8000	/* 100MBps full duplex */
+#define DSCSR_100HDX		0x4000	/* 100Mbps half duplex */
+#define DSCSR_10FDX		0x2000	/* 10Mbps full duplex */
+#define DSCSR_10HDX		0x1000	/* 10Mbps half duplex */
+#define DSCSR_PADDR		0x01F0	/* PHY address */
+#define DSCSR_ASTAT		0x000F	/* Autonegotiation status */
+
+#define ASTAT_COMPLETE		0x8
+#define ASTAT_PDLINK_READY_FAIL	0x7
+#define ASTAT_PDLINK_READY	0x6
+#define ASTAT_CONSTMATCH_FAIL	0x5
+#define ASTAT_CONSTMATCH	0x4
+#define ASTAT_ACKMATCH_FAIL	0x3
+#define ASTAT_ACKMATCH		0x2
+#define ASTAT_ABILITYMATCH	0x1
+#define ASTAT_IDLE		0x0
+
+#define MII_AMPHY_T10CSRSCR	0x12	/* 10baseT configuration/status */
+#define T10CSRSCR_LPEN		0x4000	/* Link pulse enable */
+#define T10CSRSCR_HBE		0x2000	/* Heartbeat enable */
+#define T10CSRSCR_JABEN		0x0800	/* Jabber enable */
+#define T10CSRSCR_SER		0x0400	/* Serial mode enable */
+#define T10CSRSCR_POLR		0x0001	/* Polarity reversed */
+
+#endif /* _DEV_MII_AMTPHYREG_H_ */
diff --git a/sys/dev/mii/files.mii b/sys/dev/mii/files.mii
index 2637349d94f..ebbe5b30b37 100644
--- a/sys/dev/mii/files.mii
+++ b/sys/dev/mii/files.mii
@@ -1,4 +1,4 @@
-#	$OpenBSD: files.mii,v 1.12 2000/08/28 13:41:33 jason Exp $
+#	$OpenBSD: files.mii,v 1.13 2000/10/17 15:59:10 jason Exp $
 #	$NetBSD: files.mii,v 1.13 1998/11/05 00:36:48 thorpej Exp $
 
 file    dev/mii/mii.c				mii
@@ -84,3 +84,7 @@ file dev/mii/brgphy.c				brgphy
 device xmphy: mii_phy
 attach xmphy at mii
 file dev/mii/xmphy.c				xmphy
+
+device amphy: mii_phy
+attach amphy at mii
+file dev/mii/amphy.c				amphy