Merge with git://www.denx.de/git/u-boot.git

1 files changed, 158 insertions, 0 deletions

diff --git a/include/linux/mii.h b/include/linux/mii.h
new file mode 100644
index 0000000..7c63095
--- /dev/null
+++ b/include/linux/mii.h
@@ -0,0 +1,158 @@
+/*
+ * linux/mii.h: definitions for MII-compatible transceivers
+ * Originally drivers/net/sunhme.h.
+ *
+ * Copyright (C) 1996, 1999, 2001 David S. Miller (davem@redhat.com)
+ */
+
+#ifndef __LINUX_MII_H__
+#define __LINUX_MII_H__
+
+/* Generic MII registers. */
+
+#define MII_BMCR	    0x00	/* Basic mode control register */
+#define MII_BMSR	    0x01	/* Basic mode status register  */
+#define MII_PHYSID1	    0x02	/* PHYS ID 1		       */
+#define MII_PHYSID2	    0x03	/* PHYS ID 2		       */
+#define MII_ADVERTISE	    0x04	/* Advertisement control reg   */
+#define MII_LPA		    0x05	/* Link partner ability reg    */
+#define MII_EXPANSION	    0x06	/* Expansion register	       */
+#define MII_DCOUNTER	    0x12	/* Disconnect counter	       */
+#define MII_FCSCOUNTER	    0x13	/* False carrier counter       */
+#define MII_NWAYTEST	    0x14	/* N-way auto-neg test reg     */
+#define MII_RERRCOUNTER     0x15	/* Receive error counter       */
+#define MII_SREVISION	    0x16	/* Silicon revision	       */
+#define MII_RESV1	    0x17	/* Reserved...		       */
+#define MII_LBRERROR	    0x18	/* Lpback, rx, bypass error    */
+#define MII_PHYADDR	    0x19	/* PHY address		       */
+#define MII_RESV2	    0x1a	/* Reserved...		       */
+#define MII_TPISTATUS	    0x1b	/* TPI status for 10mbps       */
+#define MII_NCONFIG	    0x1c	/* Network interface config    */
+
+/* Basic mode control register. */
+#define BMCR_RESV		0x003f	/* Unused...		       */
+#define BMCR_SPEED1000		0x0040	/* MSB of Speed (1000)	       */
+#define BMCR_CTST		0x0080	/* Collision test	       */
+#define BMCR_FULLDPLX		0x0100	/* Full duplex		       */
+#define BMCR_ANRESTART		0x0200	/* Auto negotiation restart    */
+#define BMCR_ISOLATE		0x0400	/* Disconnect DP83840 from MII */
+#define BMCR_PDOWN		0x0800	/* Powerdown the DP83840       */
+#define BMCR_ANENABLE		0x1000	/* Enable auto negotiation     */
+#define BMCR_SPEED100		0x2000	/* Select 100Mbps	       */
+#define BMCR_LOOPBACK		0x4000	/* TXD loopback bits	       */
+#define BMCR_RESET		0x8000	/* Reset the DP83840	       */
+
+/* Basic mode status register. */
+#define BMSR_ERCAP		0x0001	/* Ext-reg capability	       */
+#define BMSR_JCD		0x0002	/* Jabber detected	       */
+#define BMSR_LSTATUS		0x0004	/* Link status		       */
+#define BMSR_ANEGCAPABLE	0x0008	/* Able to do auto-negotiation */
+#define BMSR_RFAULT		0x0010	/* Remote fault detected       */
+#define BMSR_ANEGCOMPLETE	0x0020	/* Auto-negotiation complete   */
+#define BMSR_RESV		0x07c0	/* Unused...		       */
+#define BMSR_10HALF		0x0800	/* Can do 10mbps, half-duplex  */
+#define BMSR_10FULL		0x1000	/* Can do 10mbps, full-duplex  */
+#define BMSR_100HALF		0x2000	/* Can do 100mbps, half-duplex */
+#define BMSR_100FULL		0x4000	/* Can do 100mbps, full-duplex */
+#define BMSR_100BASE4		0x8000	/* Can do 100mbps, 4k packets  */
+
+/* Advertisement control register. */
+#define ADVERTISE_SLCT		0x001f	/* Selector bits	       */
+#define ADVERTISE_CSMA		0x0001	/* Only selector supported     */
+#define ADVERTISE_10HALF	0x0020	/* Try for 10mbps half-duplex  */
+#define ADVERTISE_10FULL	0x0040	/* Try for 10mbps full-duplex  */
+#define ADVERTISE_100HALF	0x0080	/* Try for 100mbps half-duplex */
+#define ADVERTISE_100FULL	0x0100	/* Try for 100mbps full-duplex */
+#define ADVERTISE_100BASE4	0x0200	/* Try for 100mbps 4k packets  */
+#define ADVERTISE_RESV		0x1c00	/* Unused...		       */
+#define ADVERTISE_RFAULT	0x2000	/* Say we can detect faults    */
+#define ADVERTISE_LPACK		0x4000	/* Ack link partners response  */
+#define ADVERTISE_NPAGE		0x8000	/* Next page bit	       */
+
+#define ADVERTISE_FULL (ADVERTISE_100FULL | ADVERTISE_10FULL | \
+			ADVERTISE_CSMA)
+#define ADVERTISE_ALL (ADVERTISE_10HALF | ADVERTISE_10FULL | \
+		       ADVERTISE_100HALF | ADVERTISE_100FULL)
+
+/* Link partner ability register. */
+#define LPA_SLCT		0x001f	/* Same as advertise selector  */
+#define LPA_10HALF		0x0020	/* Can do 10mbps half-duplex   */
+#define LPA_10FULL		0x0040	/* Can do 10mbps full-duplex   */
+#define LPA_100HALF		0x0080	/* Can do 100mbps half-duplex  */
+#define LPA_100FULL		0x0100	/* Can do 100mbps full-duplex  */
+#define LPA_100BASE4		0x0200	/* Can do 100mbps 4k packets   */
+#define LPA_RESV		0x1c00	/* Unused...		       */
+#define LPA_RFAULT		0x2000	/* Link partner faulted        */
+#define LPA_LPACK		0x4000	/* Link partner acked us       */
+#define LPA_NPAGE		0x8000	/* Next page bit	       */
+
+#define LPA_DUPLEX		(LPA_10FULL | LPA_100FULL)
+#define LPA_100			(LPA_100FULL | LPA_100HALF | LPA_100BASE4)
+
+/* Expansion register for auto-negotiation. */
+#define EXPANSION_NWAY		0x0001	/* Can do N-way auto-nego      */
+#define EXPANSION_LCWP		0x0002	/* Got new RX page code word   */
+#define EXPANSION_ENABLENPAGE	0x0004	/* This enables npage words    */
+#define EXPANSION_NPCAPABLE	0x0008	/* Link partner supports npage */
+#define EXPANSION_MFAULTS	0x0010	/* Multiple faults detected    */
+#define EXPANSION_RESV		0xffe0	/* Unused...		       */
+
+/* N-way test register. */
+#define NWAYTEST_RESV1		0x00ff	/* Unused...		       */
+#define NWAYTEST_LOOPBACK	0x0100	/* Enable loopback for N-way   */
+#define NWAYTEST_RESV2		0xfe00	/* Unused...		       */
+
+
+/**
+ * mii_nway_result
+ * @negotiated: value of MII ANAR and'd with ANLPAR
+ *
+ * Given a set of MII abilities, check each bit and returns the
+ * currently supported media, in the priority order defined by
+ * IEEE 802.3u.  We use LPA_xxx constants but note this is not the
+ * value of LPA solely, as described above.
+ *
+ * The one exception to IEEE 802.3u is that 100baseT4 is placed
+ * between 100T-full and 100T-half.  If your phy does not support
+ * 100T4 this is fine.	If your phy places 100T4 elsewhere in the
+ * priority order, you will need to roll your own function.
+ */
+static inline unsigned int mii_nway_result (unsigned int negotiated)
+{
+	unsigned int ret;
+
+	if (negotiated & LPA_100FULL)
+		ret = LPA_100FULL;
+	else if (negotiated & LPA_100BASE4)
+		ret = LPA_100BASE4;
+	else if (negotiated & LPA_100HALF)
+		ret = LPA_100HALF;
+	else if (negotiated & LPA_10FULL)
+		ret = LPA_10FULL;
+	else
+		ret = LPA_10HALF;
+
+	return ret;
+}
+
+/**
+ * mii_duplex
+ * @duplex_lock: Non-zero if duplex is locked at full
+ * @negotiated: value of MII ANAR and'd with ANLPAR
+ *
+ * A small helper function for a common case.  Returns one
+ * if the media is operating or locked at full duplex, and
+ * returns zero otherwise.
+ */
+static inline unsigned int mii_duplex (unsigned int duplex_lock,
+				       unsigned int negotiated)
+{
+	if (duplex_lock)
+		return 1;
+	if (mii_nway_result(negotiated) & LPA_DUPLEX)
+		return 1;
+	return 0;
+}
+
+
+#endif /* __LINUX_MII_H__ */