diff --git a/include/linux/mdio.h b/include/linux/mdio.h
new file mode 100644
index 0000000000000000000000000000000000000000..d57ddb08a1b21ae4e7e08f7d7bccb4f0ed74aa9a
--- /dev/null
+++ b/include/linux/mdio.h
@@ -0,0 +1,237 @@
+/*
+ * linux/mdio.h: definitions for MDIO (clause 45) transceivers
+ * Copyright 2006-2009 Solarflare Communications Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation, incorporated herein by reference.
+ */
+
+#ifndef __LINUX_MDIO_H__
+#define __LINUX_MDIO_H__
+
+#include <linux/mii.h>
+
+/* MDIO Manageable Devices (MMDs). */
+#define MDIO_MMD_PMAPMD		1	/* Physical Medium Attachment/
+					 * Physical Medium Dependent */
+#define MDIO_MMD_WIS		2	/* WAN Interface Sublayer */
+#define MDIO_MMD_PCS		3	/* Physical Coding Sublayer */
+#define MDIO_MMD_PHYXS		4	/* PHY Extender Sublayer */
+#define MDIO_MMD_DTEXS		5	/* DTE Extender Sublayer */
+#define MDIO_MMD_TC		6	/* Transmission Convergence */
+#define MDIO_MMD_AN		7	/* Auto-Negotiation */
+#define MDIO_MMD_C22EXT		29	/* Clause 22 extension */
+#define MDIO_MMD_VEND1		30	/* Vendor specific 1 */
+#define MDIO_MMD_VEND2		31	/* Vendor specific 2 */
+
+/* Generic MDIO registers. */
+#define MDIO_CTRL1		MII_BMCR
+#define MDIO_STAT1		MII_BMSR
+#define MDIO_DEVID1		MII_PHYSID1
+#define MDIO_DEVID2		MII_PHYSID2
+#define MDIO_SPEED		4	/* Speed ability */
+#define MDIO_DEVS1		5	/* Devices in package */
+#define MDIO_DEVS2		6
+#define MDIO_CTRL2		7	/* 10G control 2 */
+#define MDIO_STAT2		8	/* 10G status 2 */
+#define MDIO_PMA_TXDIS		9	/* 10G PMA/PMD transmit disable */
+#define MDIO_PMA_RXDET		10	/* 10G PMA/PMD receive signal detect */
+#define MDIO_PMA_EXTABLE	11	/* 10G PMA/PMD extended ability */
+#define MDIO_PKGID1		14	/* Package identifier */
+#define MDIO_PKGID2		15
+#define MDIO_AN_ADVERTISE	16	/* AN advertising (base page) */
+#define MDIO_AN_LPA		19	/* AN LP abilities (base page) */
+#define MDIO_PHYXS_LNSTAT	24	/* PHY XGXS lane state */
+
+/* Media-dependent registers. */
+#define MDIO_PMA_10GBT_TXPWR	131	/* 10GBASE-T TX power control */
+#define MDIO_PCS_10GBX_STAT1	24	/* 10GBASE-X PCS status 1 */
+#define MDIO_PCS_10GBRT_STAT1	32	/* 10GBASE-R/-T PCS status 1 */
+#define MDIO_PCS_10GBRT_STAT2	33	/* 10GBASE-R/-T PCS status 2 */
+#define MDIO_AN_10GBT_CTRL	32	/* 10GBASE-T auto-negotiation control */
+#define MDIO_AN_10GBT_STAT	33	/* 10GBASE-T auto-negotiation status */
+
+/* Control register 1. */
+/* Enable extended speed selection */
+#define MDIO_CTRL1_SPEEDSELEXT		(BMCR_SPEED1000 | BMCR_SPEED100)
+/* All speed selection bits */
+#define MDIO_CTRL1_SPEEDSEL		(MDIO_CTRL1_SPEEDSELEXT | 0x003c)
+#define MDIO_CTRL1_FULLDPLX		BMCR_FULLDPLX
+#define MDIO_CTRL1_LPOWER		BMCR_PDOWN
+#define MDIO_CTRL1_RESET		BMCR_RESET
+#define MDIO_PMA_CTRL1_LOOPBACK		0x0001
+#define MDIO_PMA_CTRL1_SPEED1000	BMCR_SPEED1000
+#define MDIO_PMA_CTRL1_SPEED100		BMCR_SPEED100
+#define MDIO_PCS_CTRL1_LOOPBACK		BMCR_LOOPBACK
+#define MDIO_PHYXS_CTRL1_LOOPBACK	BMCR_LOOPBACK
+#define MDIO_AN_CTRL1_RESTART		BMCR_ANRESTART
+#define MDIO_AN_CTRL1_ENABLE		BMCR_ANENABLE
+#define MDIO_AN_CTRL1_XNP		0x2000	/* Enable extended next page */
+
+/* 10 Gb/s */
+#define MDIO_CTRL1_SPEED10G		(MDIO_CTRL1_SPEEDSELEXT | 0x00)
+/* 10PASS-TS/2BASE-TL */
+#define MDIO_CTRL1_SPEED10P2B		(MDIO_CTRL1_SPEEDSELEXT | 0x04)
+
+/* Status register 1. */
+#define MDIO_STAT1_LPOWERABLE		0x0002	/* Low-power ability */
+#define MDIO_STAT1_LSTATUS		BMSR_LSTATUS
+#define MDIO_STAT1_FAULT		0x0080	/* Fault */
+#define MDIO_AN_STAT1_LPABLE		0x0001	/* Link partner AN ability */
+#define MDIO_AN_STAT1_ABLE		BMSR_ANEGCAPABLE
+#define MDIO_AN_STAT1_RFAULT		BMSR_RFAULT
+#define MDIO_AN_STAT1_COMPLETE		BMSR_ANEGCOMPLETE
+#define MDIO_AN_STAT1_PAGE		0x0040	/* Page received */
+#define MDIO_AN_STAT1_XNP		0x0080	/* Extended next page status */
+
+/* Speed register. */
+#define MDIO_SPEED_10G			0x0001	/* 10G capable */
+#define MDIO_PMA_SPEED_2B		0x0002	/* 2BASE-TL capable */
+#define MDIO_PMA_SPEED_10P		0x0004	/* 10PASS-TS capable */
+#define MDIO_PMA_SPEED_1000		0x0010	/* 1000M capable */
+#define MDIO_PMA_SPEED_100		0x0020	/* 100M capable */
+#define MDIO_PMA_SPEED_10		0x0040	/* 10M capable */
+#define MDIO_PCS_SPEED_10P2B		0x0002	/* 10PASS-TS/2BASE-TL capable */
+
+/* Device present registers. */
+#define MDIO_DEVS_PRESENT(devad)	(1 << (devad))
+#define MDIO_DEVS_PMAPMD		MDIO_DEVS_PRESENT(MDIO_MMD_PMAPMD)
+#define MDIO_DEVS_WIS			MDIO_DEVS_PRESENT(MDIO_MMD_WIS)
+#define MDIO_DEVS_PCS			MDIO_DEVS_PRESENT(MDIO_MMD_PCS)
+#define MDIO_DEVS_PHYXS			MDIO_DEVS_PRESENT(MDIO_MMD_PHYXS)
+#define MDIO_DEVS_DTEXS			MDIO_DEVS_PRESENT(MDIO_MMD_DTEXS)
+#define MDIO_DEVS_TC			MDIO_DEVS_PRESENT(MDIO_MMD_TC)
+#define MDIO_DEVS_AN			MDIO_DEVS_PRESENT(MDIO_MMD_AN)
+#define MDIO_DEVS_C22EXT		MDIO_DEVS_PRESENT(MDIO_MMD_C22EXT)
+
+/* Control register 2. */
+#define MDIO_PMA_CTRL2_TYPE		0x000f	/* PMA/PMD type selection */
+#define MDIO_PMA_CTRL2_10GBCX4		0x0000	/* 10GBASE-CX4 type */
+#define MDIO_PMA_CTRL2_10GBEW		0x0001	/* 10GBASE-EW type */
+#define MDIO_PMA_CTRL2_10GBLW		0x0002	/* 10GBASE-LW type */
+#define MDIO_PMA_CTRL2_10GBSW		0x0003	/* 10GBASE-SW type */
+#define MDIO_PMA_CTRL2_10GBLX4		0x0004	/* 10GBASE-LX4 type */
+#define MDIO_PMA_CTRL2_10GBER		0x0005	/* 10GBASE-ER type */
+#define MDIO_PMA_CTRL2_10GBLR		0x0006	/* 10GBASE-LR type */
+#define MDIO_PMA_CTRL2_10GBSR		0x0007	/* 10GBASE-SR type */
+#define MDIO_PMA_CTRL2_10GBLRM		0x0008	/* 10GBASE-LRM type */
+#define MDIO_PMA_CTRL2_10GBT		0x0009	/* 10GBASE-T type */
+#define MDIO_PMA_CTRL2_10GBKX4		0x000a	/* 10GBASE-KX4 type */
+#define MDIO_PMA_CTRL2_10GBKR		0x000b	/* 10GBASE-KR type */
+#define MDIO_PMA_CTRL2_1000BT		0x000c	/* 1000BASE-T type */
+#define MDIO_PMA_CTRL2_1000BKX		0x000d	/* 1000BASE-KX type */
+#define MDIO_PMA_CTRL2_100BTX		0x000e	/* 100BASE-TX type */
+#define MDIO_PMA_CTRL2_10BT		0x000f	/* 10BASE-T type */
+#define MDIO_PCS_CTRL2_TYPE		0x0003	/* PCS type selection */
+#define MDIO_PCS_CTRL2_10GBR		0x0000	/* 10GBASE-R type */
+#define MDIO_PCS_CTRL2_10GBX		0x0001	/* 10GBASE-X type */
+#define MDIO_PCS_CTRL2_10GBW		0x0002	/* 10GBASE-W type */
+#define MDIO_PCS_CTRL2_10GBT		0x0003	/* 10GBASE-T type */
+
+/* Status register 2. */
+#define MDIO_STAT2_RXFAULT		0x0400	/* Receive fault */
+#define MDIO_STAT2_TXFAULT		0x0800	/* Transmit fault */
+#define MDIO_STAT2_DEVPRST		0xc000	/* Device present */
+#define MDIO_STAT2_DEVPRST_VAL		0x8000	/* Device present value */
+#define MDIO_PMA_STAT2_LBABLE		0x0001	/* PMA loopback ability */
+#define MDIO_PMA_STAT2_10GBEW		0x0002	/* 10GBASE-EW ability */
+#define MDIO_PMA_STAT2_10GBLW		0x0004	/* 10GBASE-LW ability */
+#define MDIO_PMA_STAT2_10GBSW		0x0008	/* 10GBASE-SW ability */
+#define MDIO_PMA_STAT2_10GBLX4		0x0010	/* 10GBASE-LX4 ability */
+#define MDIO_PMA_STAT2_10GBER		0x0020	/* 10GBASE-ER ability */
+#define MDIO_PMA_STAT2_10GBLR		0x0040	/* 10GBASE-LR ability */
+#define MDIO_PMA_STAT2_10GBSR		0x0080	/* 10GBASE-SR ability */
+#define MDIO_PMD_STAT2_TXDISAB		0x0100	/* PMD TX disable ability */
+#define MDIO_PMA_STAT2_EXTABLE		0x0200	/* Extended abilities */
+#define MDIO_PMA_STAT2_RXFLTABLE	0x1000	/* Receive fault ability */
+#define MDIO_PMA_STAT2_TXFLTABLE	0x2000	/* Transmit fault ability */
+#define MDIO_PCS_STAT2_10GBR		0x0001	/* 10GBASE-R capable */
+#define MDIO_PCS_STAT2_10GBX		0x0002	/* 10GBASE-X capable */
+#define MDIO_PCS_STAT2_10GBW		0x0004	/* 10GBASE-W capable */
+#define MDIO_PCS_STAT2_RXFLTABLE	0x1000	/* Receive fault ability */
+#define MDIO_PCS_STAT2_TXFLTABLE	0x2000	/* Transmit fault ability */
+
+/* Transmit disable register. */
+#define MDIO_PMD_TXDIS_GLOBAL		0x0001	/* Global PMD TX disable */
+#define MDIO_PMD_TXDIS_0		0x0002	/* PMD TX disable 0 */
+#define MDIO_PMD_TXDIS_1		0x0004	/* PMD TX disable 1 */
+#define MDIO_PMD_TXDIS_2		0x0008	/* PMD TX disable 2 */
+#define MDIO_PMD_TXDIS_3		0x0010	/* PMD TX disable 3 */
+
+/* Receive signal detect register. */
+#define MDIO_PMD_RXDET_GLOBAL		0x0001	/* Global PMD RX signal detect */
+#define MDIO_PMD_RXDET_0		0x0002	/* PMD RX signal detect 0 */
+#define MDIO_PMD_RXDET_1		0x0004	/* PMD RX signal detect 1 */
+#define MDIO_PMD_RXDET_2		0x0008	/* PMD RX signal detect 2 */
+#define MDIO_PMD_RXDET_3		0x0010	/* PMD RX signal detect 3 */
+
+/* Extended abilities register. */
+#define MDIO_PMA_EXTABLE_10GCX4		0x0001	/* 10GBASE-CX4 ability */
+#define MDIO_PMA_EXTABLE_10GBLRM	0x0002	/* 10GBASE-LRM ability */
+#define MDIO_PMA_EXTABLE_10GBT		0x0004	/* 10GBASE-T ability */
+#define MDIO_PMA_EXTABLE_10GBKX4	0x0008	/* 10GBASE-KX4 ability */
+#define MDIO_PMA_EXTABLE_10GBKR		0x0010	/* 10GBASE-KR ability */
+#define MDIO_PMA_EXTABLE_1000BT		0x0020	/* 1000BASE-T ability */
+#define MDIO_PMA_EXTABLE_1000BKX	0x0040	/* 1000BASE-KX ability */
+#define MDIO_PMA_EXTABLE_100BTX		0x0080	/* 100BASE-TX ability */
+#define MDIO_PMA_EXTABLE_10BT		0x0100	/* 10BASE-T ability */
+
+/* PHY XGXS lane state register. */
+#define MDIO_PHYXS_LNSTAT_SYNC0		0x0001
+#define MDIO_PHYXS_LNSTAT_SYNC1		0x0002
+#define MDIO_PHYXS_LNSTAT_SYNC2		0x0004
+#define MDIO_PHYXS_LNSTAT_SYNC3		0x0008
+#define MDIO_PHYXS_LNSTAT_ALIGN		0x1000
+
+/* PMA 10GBASE-T TX power register. */
+#define MDIO_PMA_10GBT_TXPWR_SHORT	0x0001	/* Short-reach mode */
+
+/* PCS 10GBASE-R/-T status register 1. */
+#define MDIO_PCS_10GBRT_STAT1_BLKLK	0x0001	/* Block lock attained */
+
+/* PCS 10GBASE-R/-T status register 2. */
+#define MDIO_PCS_10GBRT_STAT2_ERR	0x00ff
+#define MDIO_PCS_10GBRT_STAT2_BER	0x3f00
+
+/* AN 10GBASE-T control register. */
+#define MDIO_AN_10GBT_CTRL_ADV10G	0x1000	/* Advertise 10GBASE-T */
+
+/* AN 10GBASE-T status register. */
+#define MDIO_AN_10GBT_STAT_LPTRR	0x0200	/* LP training reset req. */
+#define MDIO_AN_10GBT_STAT_LPLTABLE	0x0400	/* LP loop timing ability */
+#define MDIO_AN_10GBT_STAT_LP10G	0x0800	/* LP is 10GBT capable */
+#define MDIO_AN_10GBT_STAT_REMOK	0x1000	/* Remote OK */
+#define MDIO_AN_10GBT_STAT_LOCOK	0x2000	/* Local OK */
+#define MDIO_AN_10GBT_STAT_MS		0x4000	/* Master/slave config */
+#define MDIO_AN_10GBT_STAT_MSFLT	0x8000	/* Master/slave config fault */
+
+/* Mapping between MDIO PRTAD/DEVAD and mii_ioctl_data::phy_id */
+
+#define MDIO_PHY_ID_C45			0x8000
+#define MDIO_PHY_ID_PRTAD		0x03e0
+#define MDIO_PHY_ID_DEVAD		0x001f
+#define MDIO_PHY_ID_C45_MASK						\
+	(MDIO_PHY_ID_C45 | MDIO_PHY_ID_PRTAD | MDIO_PHY_ID_DEVAD)
+
+static inline __u16 mdio_phy_id_c45(int prtad, int devad)
+{
+	return MDIO_PHY_ID_C45 | (prtad << 5) | devad;
+}
+
+static inline bool mdio_phy_id_is_c45(int phy_id)
+{
+	return (phy_id & MDIO_PHY_ID_C45) && !(phy_id & ~MDIO_PHY_ID_C45_MASK);
+}
+
+static inline __u16 mdio_phy_id_prtad(int phy_id)
+{
+	return (phy_id & MDIO_PHY_ID_PRTAD) >> 5;
+}
+
+static inline __u16 mdio_phy_id_devad(int phy_id)
+{
+	return phy_id & MDIO_PHY_ID_DEVAD;
+}
+
+#endif /* __LINUX_MDIO_H__ */