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-rw-r--r--gpxe/src/include/mii.h122
1 files changed, 118 insertions, 4 deletions
diff --git a/gpxe/src/include/mii.h b/gpxe/src/include/mii.h
index 34c1ca9b..3b735d99 100644
--- a/gpxe/src/include/mii.h
+++ b/gpxe/src/include/mii.h
@@ -10,6 +10,11 @@
* 03/26/2004
*/
+FILE_LICENCE ( GPL2_ONLY );
+
+#ifndef _MII_H_
+#define _MII_H_
+
/* Generic MII registers. */
#define MII_BMCR 0x00 /* Basic mode control register */
@@ -19,6 +24,9 @@
#define MII_ADVERTISE 0x04 /* Advertisement control reg */
#define MII_LPA 0x05 /* Link partner ability reg */
#define MII_EXPANSION 0x06 /* Expansion register */
+#define MII_CTRL1000 0x09 /* 1000BASE-T control */
+#define MII_STAT1000 0x0a /* 1000BASE-T status */
+#define MII_ESTATUS 0x0f /* Extended Status */
#define MII_DCOUNTER 0x12 /* Disconnect counter */
#define MII_FCSCOUNTER 0x13 /* False carrier counter */
#define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */
@@ -32,7 +40,8 @@
#define MII_NCONFIG 0x1c /* Network interface config */
/* Basic mode control register. */
-#define BMCR_RESV 0x007f /* Unused... */
+#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 */
@@ -50,7 +59,10 @@
#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_RESV 0x00c0 /* Unused... */
+#define BMSR_ESTATEN 0x0100 /* Extended Status in R15 */
+#define BMSR_100HALF2 0x0200 /* Can do 100BASE-T2 HDX */
+#define BMSR_100FULL2 0x0400 /* Can do 100BASE-T2 FDX */
#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 */
@@ -61,11 +73,17 @@
#define ADVERTISE_SLCT 0x001f /* Selector bits */
#define ADVERTISE_CSMA 0x0001 /* Only selector supported */
#define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */
+#define ADVERTISE_1000XFULL 0x0020 /* Try for 1000BASE-X full-duplex */
#define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */
+#define ADVERTISE_1000XHALF 0x0040 /* Try for 1000BASE-X half-duplex */
#define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */
+#define ADVERTISE_1000XPAUSE 0x0080 /* Try for 1000BASE-X pause */
#define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */
+#define ADVERTISE_1000XPSE_ASYM 0x0100 /* Try for 1000BASE-X asym pause */
#define ADVERTISE_100BASE4 0x0200 /* Try for 100mbps 4k packets */
-#define ADVERTISE_RESV 0x1c00 /* Unused... */
+#define ADVERTISE_PAUSE_CAP 0x0400 /* Try for pause */
+#define ADVERTISE_PAUSE_ASYM 0x0800 /* Try for asymetric pause */
+#define ADVERTISE_RESV 0x1000 /* 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 */
@@ -78,11 +96,17 @@
/* Link partner ability register. */
#define LPA_SLCT 0x001f /* Same as advertise selector */
#define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */
+#define LPA_1000XFULL 0x0020 /* Can do 1000BASE-X full-duplex */
#define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */
+#define LPA_1000XHALF 0x0040 /* Can do 1000BASE-X half-duplex */
#define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */
+#define LPA_1000XPAUSE 0x0080 /* Can do 1000BASE-X pause */
#define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */
+#define LPA_1000XPAUSE_ASYM 0x0100 /* Can do 1000BASE-X pause asym*/
#define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */
-#define LPA_RESV 0x1c00 /* Unused... */
+#define LPA_PAUSE_CAP 0x0400 /* Can pause */
+#define LPA_PAUSE_ASYM 0x0800 /* Can pause asymetrically */
+#define LPA_RESV 0x1000 /* Unused... */
#define LPA_RFAULT 0x2000 /* Link partner faulted */
#define LPA_LPACK 0x4000 /* Link partner acked us */
#define LPA_NPAGE 0x8000 /* Next page bit */
@@ -98,8 +122,98 @@
#define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected */
#define EXPANSION_RESV 0xffe0 /* Unused... */
+#define ESTATUS_1000_TFULL 0x2000 /* Can do 1000BT Full */
+#define ESTATUS_1000_THALF 0x1000 /* Can do 1000BT Half */
+
/* N-way test register. */
#define NWAYTEST_RESV1 0x00ff /* Unused... */
#define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */
#define NWAYTEST_RESV2 0xfe00 /* Unused... */
+/* 1000BASE-T Control register */
+#define ADVERTISE_1000FULL 0x0200 /* Advertise 1000BASE-T full duplex */
+#define ADVERTISE_1000HALF 0x0100 /* Advertise 1000BASE-T half duplex */
+
+/* 1000BASE-T Status register */
+#define LPA_1000LOCALRXOK 0x2000 /* Link partner local receiver status */
+#define LPA_1000REMRXOK 0x1000 /* Link partner remote receiver status */
+#define LPA_1000FULL 0x0800 /* Link partner 1000BASE-T full duplex */
+#define LPA_1000HALF 0x0400 /* Link partner 1000BASE-T half duplex */
+
+#include <gpxe/netdevice.h>
+
+struct mii_if_info {
+ int phy_id;
+ int advertising;
+ int phy_id_mask;
+ int reg_num_mask;
+
+ unsigned int full_duplex : 1; /* is full duplex? */
+ unsigned int force_media : 1; /* is autoneg. disabled? */
+ unsigned int supports_gmii : 1; /* are GMII registers supported? */
+
+ struct net_device *dev;
+ int (*mdio_read) (struct net_device *dev, int phy_id, int location);
+ void (*mdio_write) (struct net_device *dev, int phy_id, int location, int val);
+};
+
+
+extern int mii_link_ok (struct mii_if_info *mii);
+extern void mii_check_link (struct mii_if_info *mii);
+extern unsigned int mii_check_media (struct mii_if_info *mii,
+ unsigned int ok_to_print,
+ unsigned int init_media);
+
+
+/**
+ * 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