sfc: Use generic MDIO functions and definitions

Make use of the newly-added generic MDIO clause 45 support and remove
redundant definitions.

Add an 'efx_' prefix to the remaining driver-specific MDIO functions
and remove arguments which are redundant with efx->mdio.prtad.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/sfc/Kconfig

 config SFC
 	tristate "Solarflare Solarstorm SFC4000 support"
 	depends on PCI && INET
-	select MII
+	select MDIO
 	select CRC32
 	select I2C
 	select I2C_ALGOBIT

drivers/net/sfc/efx.c

@@ -1300,10 +1300,16 @@ static void efx_monitor(struct work_struct *data)
 static int efx_ioctl(struct net_device *net_dev, struct ifreq *ifr, int cmd)
 {
 	struct efx_nic *efx = netdev_priv(net_dev);
+	struct mii_ioctl_data *data = if_mii(ifr);
 
 	EFX_ASSERT_RESET_SERIALISED(efx);
 
-	return generic_mii_ioctl(&efx->mii, if_mii(ifr), cmd, NULL);
+	/* Convert phy_id from older PRTAD/DEVAD format */
+	if ((cmd == SIOCGMIIREG || cmd == SIOCSMIIREG) &&
+	    (data->phy_id & 0xfc00) == 0x0400)
+		data->phy_id ^= MDIO_PHY_ID_C45 | 0x0400;
+
+	return mdio_mii_ioctl(&efx->mdio, data, cmd);
 }
 
 /**************************************************************************
@@ -1945,7 +1951,7 @@ static int efx_init_struct(struct efx_nic *efx, struct efx_nic_type *type,
 	mutex_init(&efx->mac_lock);
 	efx->mac_op = &efx_dummy_mac_operations;
 	efx->phy_op = &efx_dummy_phy_operations;
-	efx->mii.dev = net_dev;
+	efx->mdio.dev = net_dev;
 	INIT_WORK(&efx->phy_work, efx_phy_work);
 	INIT_WORK(&efx->mac_work, efx_mac_work);
 	atomic_set(&efx->netif_stop_count, 1);

drivers/net/sfc/ethtool.c

@@ -10,6 +10,7 @@
 
 #include <linux/netdevice.h>
 #include <linux/ethtool.h>
+#include <linux/mdio.h>
 #include <linux/rtnetlink.h>
 #include "net_driver.h"
 #include "workarounds.h"
@@ -345,8 +346,8 @@ static int efx_ethtool_fill_self_tests(struct efx_nic *efx,
 	unsigned int n = 0, i;
 	enum efx_loopback_mode mode;
 
-	efx_fill_test(n++, strings, data, &tests->mii,
-		      "core", 0, "mii", NULL);
+	efx_fill_test(n++, strings, data, &tests->mdio,
+		      "core", 0, "mdio", NULL);
 	efx_fill_test(n++, strings, data, &tests->nvram,
 		      "core", 0, "nvram", NULL);
 	efx_fill_test(n++, strings, data, &tests->interrupt,
@@ -529,14 +530,7 @@ static int efx_ethtool_nway_reset(struct net_device *net_dev)
 {
 	struct efx_nic *efx = netdev_priv(net_dev);
 
-	if (efx->phy_op->mmds & DEV_PRESENT_BIT(MDIO_MMD_AN)) {
-		mdio_clause45_set_flag(efx, efx->mii.phy_id, MDIO_MMD_AN,
-				       MDIO_MMDREG_CTRL1,
-				       __ffs(BMCR_ANRESTART), true);
-		return 0;
-	}
-
-	return -EOPNOTSUPP;
+	return mdio45_nway_restart(&efx->mdio);
 }
 
 static u32 efx_ethtool_get_link(struct net_device *net_dev)
@@ -689,7 +683,7 @@ static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 		return -EINVAL;
 	}
 
-	if (!(efx->phy_op->mmds & DEV_PRESENT_BIT(MDIO_MMD_AN)) &&
+	if (!(efx->phy_op->mmds & MDIO_DEVS_AN) &&
 	    (wanted_fc & EFX_FC_AUTO)) {
 		EFX_LOG(efx, "PHY does not support flow control "
 			"autonegotiation\n");
@@ -717,7 +711,7 @@ static int efx_ethtool_set_pauseparam(struct net_device *net_dev,
 	mutex_lock(&efx->mac_lock);
 
 	efx->wanted_fc = wanted_fc;
-	mdio_clause45_set_pause(efx);
+	efx_mdio_set_pause(efx);
 	__efx_reconfigure_port(efx);
 
 	mutex_unlock(&efx->mac_lock);

drivers/net/sfc/falcon.c

@@ -2063,26 +2063,6 @@ int falcon_dma_stats(struct efx_nic *efx, unsigned int done_offset)
  **************************************************************************
  */
 
-/* Use the top bit of the MII PHY id to indicate the PHY type
- * (1G/10G), with the remaining bits as the actual PHY id.
- *
- * This allows us to avoid leaking information from the mii_if_info
- * structure into other data structures.
- */
-#define FALCON_PHY_ID_ID_WIDTH  EFX_WIDTH(MD_PRT_DEV_ADR)
-#define FALCON_PHY_ID_ID_MASK   ((1 << FALCON_PHY_ID_ID_WIDTH) - 1)
-#define FALCON_PHY_ID_WIDTH     (FALCON_PHY_ID_ID_WIDTH + 1)
-#define FALCON_PHY_ID_MASK      ((1 << FALCON_PHY_ID_WIDTH) - 1)
-#define FALCON_PHY_ID_10G       (1 << (FALCON_PHY_ID_WIDTH - 1))
-
-
-/* Packing the clause 45 port and device fields into a single value */
-#define MD_PRT_ADR_COMP_LBN   (MD_PRT_ADR_LBN - MD_DEV_ADR_LBN)
-#define MD_PRT_ADR_COMP_WIDTH  MD_PRT_ADR_WIDTH
-#define MD_DEV_ADR_COMP_LBN    0
-#define MD_DEV_ADR_COMP_WIDTH  MD_DEV_ADR_WIDTH
-
-
 /* Wait for GMII access to complete */
 static int falcon_gmii_wait(struct efx_nic *efx)
 {
@@ -2108,49 +2088,29 @@ static int falcon_gmii_wait(struct efx_nic *efx)
 	return -ETIMEDOUT;
 }
 
-/* Writes a GMII register of a PHY connected to Falcon using MDIO. */
-static void falcon_mdio_write(struct net_device *net_dev, int phy_id,
-			      int addr, int value)
+/* Write an MDIO register of a PHY connected to Falcon. */
+static int falcon_mdio_write(struct net_device *net_dev,
+			     int prtad, int devad, u16 addr, u16 value)
 {
 	struct efx_nic *efx = netdev_priv(net_dev);
-	unsigned int phy_id2 = phy_id & FALCON_PHY_ID_ID_MASK;
 	efx_oword_t reg;
+	int rc;
 
-	/* The 'generic' prt/dev packing in mdio_10g.h is conveniently
-	 * chosen so that the only current user, Falcon, can take the
-	 * packed value and use them directly.
-	 * Fail to build if this assumption is broken.
-	 */
-	BUILD_BUG_ON(FALCON_PHY_ID_10G != MDIO45_XPRT_ID_IS10G);
-	BUILD_BUG_ON(FALCON_PHY_ID_ID_WIDTH != MDIO45_PRT_DEV_WIDTH);
-	BUILD_BUG_ON(MD_PRT_ADR_COMP_LBN != MDIO45_PRT_ID_COMP_LBN);
-	BUILD_BUG_ON(MD_DEV_ADR_COMP_LBN != MDIO45_DEV_ID_COMP_LBN);
-
-	if (phy_id2 == PHY_ADDR_INVALID)
-		return;
-
-	/* See falcon_mdio_read for an explanation. */
-	if (!(phy_id & FALCON_PHY_ID_10G)) {
-		int mmd = ffs(efx->phy_op->mmds) - 1;
-		EFX_TRACE(efx, "Fixing erroneous clause22 write\n");
-		phy_id2 = mdio_clause45_pack(phy_id2, mmd)
-			& FALCON_PHY_ID_ID_MASK;
-	}
-
-	EFX_REGDUMP(efx, "writing GMII %d register %02x with %04x\n", phy_id,
-		    addr, value);
+	EFX_REGDUMP(efx, "writing MDIO %d register %d.%d with 0x%04x\n",
+		    prtad, devad, addr, value);
 
 	spin_lock_bh(&efx->phy_lock);
 
-	/* Check MII not currently being accessed */
-	if (falcon_gmii_wait(efx) != 0)
+	/* Check MDIO not currently being accessed */
+	rc = falcon_gmii_wait(efx);
+	if (rc)
 		goto out;
 
 	/* Write the address/ID register */
 	EFX_POPULATE_OWORD_1(reg, MD_PHY_ADR, addr);
 	falcon_write(efx, &reg, MD_PHY_ADR_REG_KER);
 
-	EFX_POPULATE_OWORD_1(reg, MD_PRT_DEV_ADR, phy_id2);
+	EFX_POPULATE_OWORD_2(reg, MD_PRT_ADR, prtad, MD_DEV_ADR, devad);
 	falcon_write(efx, &reg, MD_ID_REG_KER);
 
 	/* Write data */
@@ -2163,7 +2123,8 @@ static void falcon_mdio_write(struct net_device *net_dev, int phy_id,
 	falcon_write(efx, &reg, MD_CS_REG_KER);
 
 	/* Wait for data to be written */
-	if (falcon_gmii_wait(efx) != 0) {
+	rc = falcon_gmii_wait(efx);
+	if (rc) {
 		/* Abort the write operation */
 		EFX_POPULATE_OWORD_2(reg,
 				     MD_WRC, 0,
@@ -2174,45 +2135,28 @@ static void falcon_mdio_write(struct net_device *net_dev, int phy_id,
 
  out:
 	spin_unlock_bh(&efx->phy_lock);
+	return rc;
 }
 
-/* Reads a GMII register from a PHY connected to Falcon.  If no value
- * could be read, -1 will be returned. */
-static int falcon_mdio_read(struct net_device *net_dev, int phy_id, int addr)
+/* Read an MDIO register of a PHY connected to Falcon. */
+static int falcon_mdio_read(struct net_device *net_dev,
+			    int prtad, int devad, u16 addr)
 {
 	struct efx_nic *efx = netdev_priv(net_dev);
-	unsigned int phy_addr = phy_id & FALCON_PHY_ID_ID_MASK;
 	efx_oword_t reg;
-	int value = -1;
-
-	if (phy_addr == PHY_ADDR_INVALID)
-		return -1;
-
-	/* Our PHY code knows whether it needs to talk clause 22(1G) or 45(10G)
-	 * but the generic Linux code does not make any distinction or have
-	 * any state for this.
-	 * We spot the case where someone tried to talk 22 to a 45 PHY and
-	 * redirect the request to the lowest numbered MMD as a clause45
-	 * request. This is enough to allow simple queries like id and link
-	 * state to succeed. TODO: We may need to do more in future.
-	 */
-	if (!(phy_id & FALCON_PHY_ID_10G)) {
-		int mmd = ffs(efx->phy_op->mmds) - 1;
-		EFX_TRACE(efx, "Fixing erroneous clause22 read\n");
-		phy_addr = mdio_clause45_pack(phy_addr, mmd)
-			& FALCON_PHY_ID_ID_MASK;
-	}
+	int rc;
 
 	spin_lock_bh(&efx->phy_lock);
 
-	/* Check MII not currently being accessed */
-	if (falcon_gmii_wait(efx) != 0)
+	/* Check MDIO not currently being accessed */
+	rc = falcon_gmii_wait(efx);
+	if (rc)
 		goto out;
 
 	EFX_POPULATE_OWORD_1(reg, MD_PHY_ADR, addr);
 	falcon_write(efx, &reg, MD_PHY_ADR_REG_KER);
 
-	EFX_POPULATE_OWORD_1(reg, MD_PRT_DEV_ADR, phy_addr);
+	EFX_POPULATE_OWORD_2(reg, MD_PRT_ADR, prtad, MD_DEV_ADR, devad);
 	falcon_write(efx, &reg, MD_ID_REG_KER);
 
 	/* Request data to be read */
@@ -2220,12 +2164,12 @@ static int falcon_mdio_read(struct net_device *net_dev, int phy_id, int addr)
 	falcon_write(efx, &reg, MD_CS_REG_KER);
 
 	/* Wait for data to become available */
-	value = falcon_gmii_wait(efx);
-	if (value == 0) {
+	rc = falcon_gmii_wait(efx);
+	if (rc == 0) {
 		falcon_read(efx, &reg, MD_RXD_REG_KER);
-		value = EFX_OWORD_FIELD(reg, MD_RXD);
-		EFX_REGDUMP(efx, "read from GMII %d register %02x, got %04x\n",
-			    phy_id, addr, value);
+		rc = EFX_OWORD_FIELD(reg, MD_RXD);
+		EFX_REGDUMP(efx, "read from MDIO %d register %d.%d, got %04x\n",
+			    prtad, devad, addr, rc);
 	} else {
 		/* Abort the read operation */
 		EFX_POPULATE_OWORD_2(reg,
@@ -2233,22 +2177,13 @@ static int falcon_mdio_read(struct net_device *net_dev, int phy_id, int addr)
 				     MD_GC, 1);
 		falcon_write(efx, &reg, MD_CS_REG_KER);
 
-		EFX_LOG(efx, "read from GMII 0x%x register %02x, got "
-			"error %d\n", phy_id, addr, value);
+		EFX_LOG(efx, "read from MDIO %d register %d.%d, got error %d\n",
+			prtad, devad, addr, rc);
 	}
 
  out:
 	spin_unlock_bh(&efx->phy_lock);
-
-	return value;
-}
-
-static void falcon_init_mdio(struct mii_if_info *gmii)
-{
-	gmii->mdio_read = falcon_mdio_read;
-	gmii->mdio_write = falcon_mdio_write;
-	gmii->phy_id_mask = FALCON_PHY_ID_MASK;
-	gmii->reg_num_mask = ((1 << EFX_WIDTH(MD_PHY_ADR)) - 1);
+	return rc;
 }
 
 static int falcon_probe_phy(struct efx_nic *efx)
@@ -2342,9 +2277,11 @@ int falcon_probe_port(struct efx_nic *efx)
 	if (rc)
 		return rc;
 
-	/* Set up GMII structure for PHY */
-	efx->mii.supports_gmii = true;
-	falcon_init_mdio(&efx->mii);
+	/* Set up MDIO structure for PHY */
+	efx->mdio.mmds = efx->phy_op->mmds;
+	efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
+	efx->mdio.mdio_read = falcon_mdio_read;
+	efx->mdio.mdio_write = falcon_mdio_write;
 
 	/* Hardware flow ctrl. FalconA RX FIFO too small for pause generation */
 	if (falcon_rev(efx) >= FALCON_REV_B0)
@@ -2761,7 +2698,7 @@ static int falcon_probe_nvconfig(struct efx_nic *efx)
 	if (rc == -EINVAL) {
 		EFX_ERR(efx, "NVRAM is invalid therefore using defaults\n");
 		efx->phy_type = PHY_TYPE_NONE;
-		efx->mii.phy_id = PHY_ADDR_INVALID;
+		efx->mdio.prtad = MDIO_PRTAD_NONE;
 		board_rev = 0;
 		rc = 0;
 	} else if (rc) {
@@ -2771,7 +2708,7 @@ static int falcon_probe_nvconfig(struct efx_nic *efx)
 		struct falcon_nvconfig_board_v3 *v3 = &nvconfig->board_v3;
 
 		efx->phy_type = v2->port0_phy_type;
-		efx->mii.phy_id = v2->port0_phy_addr;
+		efx->mdio.prtad = v2->port0_phy_addr;
 		board_rev = le16_to_cpu(v2->board_revision);
 
 		if (le16_to_cpu(nvconfig->board_struct_ver) >= 3) {
@@ -2793,7 +2730,7 @@ static int falcon_probe_nvconfig(struct efx_nic *efx)
 	/* Read the MAC addresses */
 	memcpy(efx->mac_address, nvconfig->mac_address[0], ETH_ALEN);
 
-	EFX_LOG(efx, "PHY is %d phy_id %d\n", efx->phy_type, efx->mii.phy_id);
+	EFX_LOG(efx, "PHY is %d phy_id %d\n", efx->phy_type, efx->mdio.prtad);
 
 	efx_set_board_info(efx, board_rev);
 

drivers/net/sfc/falcon_hwdefs.h

@@ -456,9 +456,6 @@
 #define MD_PRT_ADR_WIDTH 5
 #define MD_DEV_ADR_LBN 6
 #define MD_DEV_ADR_WIDTH 5
-/* Used for writing both at once */
-#define MD_PRT_DEV_ADR_LBN 6
-#define MD_PRT_DEV_ADR_WIDTH 10
 
 /* PHY management status & mask register (DWORD read only) */
 #define MD_STAT_REG_KER 0xc50

drivers/net/sfc/falcon_xmac.c

@@ -133,7 +133,7 @@ bool falcon_xaui_link_ok(struct efx_nic *efx)
 	/* If the link is up, then check the phy side of the xaui link */
 	if (efx->link_up && link_ok)
 		if (efx->phy_op->mmds & (1 << MDIO_MMD_PHYXS))
-			link_ok = mdio_clause45_phyxgxs_lane_sync(efx);
+			link_ok = efx_mdio_phyxgxs_lane_sync(efx);
 
 	return link_ok;
 }

drivers/net/sfc/net_driver.h

@@ -19,7 +19,7 @@
 #include <linux/ethtool.h>
 #include <linux/if_vlan.h>
 #include <linux/timer.h>
-#include <linux/mii.h>
+#include <linux/mdio.h>
 #include <linux/list.h>
 #include <linux/pci.h>
 #include <linux/device.h>
@@ -458,8 +458,6 @@ enum phy_type {
 	PHY_TYPE_MAX	/* Insert any new items before this */
 };
 
-#define PHY_ADDR_INVALID 0xff
-
 #define EFX_IS10G(efx) ((efx)->link_speed == 10000)
 
 enum nic_state {
@@ -758,7 +756,7 @@ union efx_multicast_hash {
  * @phy_lock: PHY access lock
  * @phy_op: PHY interface
  * @phy_data: PHY private data (including PHY-specific stats)
- * @mii: PHY interface
+ * @mdio: PHY MDIO interface
  * @phy_mode: PHY operating mode. Serialised by @mac_lock.
  * @mac_up: MAC link state
  * @link_up: Link status
@@ -845,7 +843,7 @@ struct efx_nic {
 	struct work_struct phy_work;
 	struct efx_phy_operations *phy_op;
 	void *phy_data;
-	struct mii_if_info mii;
+	struct mdio_if_info mdio;
 	enum efx_phy_mode phy_mode;
 
 	bool mac_up;

drivers/net/sfc/selftest.c

@@ -80,39 +80,38 @@ struct efx_loopback_state {
  *
  **************************************************************************/
 
-static int efx_test_mii(struct efx_nic *efx, struct efx_self_tests *tests)
+static int efx_test_mdio(struct efx_nic *efx, struct efx_self_tests *tests)
 {
 	int rc = 0;
+	int devad = __ffs(efx->mdio.mmds);
 	u16 physid1, physid2;
-	struct mii_if_info *mii = &efx->mii;
-	struct net_device *net_dev = efx->net_dev;
 
 	if (efx->phy_type == PHY_TYPE_NONE)
 		return 0;
 
 	mutex_lock(&efx->mac_lock);
-	tests->mii = -1;
+	tests->mdio = -1;
 
-	physid1 = mii->mdio_read(net_dev, mii->phy_id, MII_PHYSID1);
-	physid2 = mii->mdio_read(net_dev, mii->phy_id, MII_PHYSID2);
+	physid1 = efx_mdio_read(efx, devad, MDIO_DEVID1);
+	physid2 = efx_mdio_read(efx, devad, MDIO_DEVID2);
 
 	if ((physid1 == 0x0000) || (physid1 == 0xffff) ||
 	    (physid2 == 0x0000) || (physid2 == 0xffff)) {
-		EFX_ERR(efx, "no MII PHY present with ID %d\n",
-			mii->phy_id);
+		EFX_ERR(efx, "no MDIO PHY present with ID %d\n",
+			efx->mdio.prtad);
 		rc = -EINVAL;
 		goto out;
 	}
 
 	if (EFX_IS10G(efx)) {
-		rc = mdio_clause45_check_mmds(efx, efx->phy_op->mmds, 0);
+		rc = efx_mdio_check_mmds(efx, efx->phy_op->mmds, 0);
 		if (rc)
 			goto out;
 	}
 
 out:
 	mutex_unlock(&efx->mac_lock);
-	tests->mii = rc ? -1 : 1;
+	tests->mdio = rc ? -1 : 1;
 	return rc;
 }
 
@@ -673,7 +672,7 @@ int efx_selftest(struct efx_nic *efx, struct efx_self_tests *tests,
 	/* Online (i.e. non-disruptive) testing
 	 * This checks interrupt generation, event delivery and PHY presence. */
 
-	rc = efx_test_mii(efx, tests);
+	rc = efx_test_mdio(efx, tests);
 	if (rc && !rc_test)
 		rc_test = rc;
 

drivers/net/sfc/selftest.h

@@ -32,7 +32,7 @@ struct efx_loopback_self_tests {
  */
 struct efx_self_tests {
 	/* online tests */
-	int mii;
+	int mdio;
 	int nvram;
 	int interrupt;
 	int eventq_dma[EFX_MAX_CHANNELS];

drivers/net/sfc/xenpack.h

@@ -34,29 +34,24 @@
 /* Enable LASI interrupts for PHY */
 static inline void xenpack_enable_lasi_irqs(struct efx_nic *efx)
 {
-	int reg;
-	int phy_id = efx->mii.phy_id;
 	/* Read to clear LASI status register */
-	reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD,
-				 MDIO_XP_LASI_STAT);
+	efx_mdio_read(efx, MDIO_MMD_PMAPMD, MDIO_XP_LASI_STAT);
 
-	mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD,
-			    MDIO_XP_LASI_CTRL, XP_LASI_LS_ALARM);
+	efx_mdio_write(efx, MDIO_MMD_PMAPMD, MDIO_XP_LASI_CTRL,
+		       XP_LASI_LS_ALARM);
 }
 
 /* Read the LASI interrupt status to clear the interrupt. */
 static inline int xenpack_clear_lasi_irqs(struct efx_nic *efx)
 {
 	/* Read to clear link status alarm */
-	return mdio_clause45_read(efx, efx->mii.phy_id,
-				  MDIO_MMD_PMAPMD, MDIO_XP_LASI_STAT);
+	return efx_mdio_read(efx, MDIO_MMD_PMAPMD, MDIO_XP_LASI_STAT);
 }
 
 /* Turn off LASI interrupts */
 static inline void xenpack_disable_lasi_irqs(struct efx_nic *efx)
 {
-	mdio_clause45_write(efx, efx->mii.phy_id, MDIO_MMD_PMAPMD,
-			    MDIO_XP_LASI_CTRL, 0);
+	efx_mdio_write(efx, MDIO_MMD_PMAPMD, MDIO_XP_LASI_CTRL, 0);
 }
 
 #endif /* EFX_XENPACK_H */

drivers/net/sfc/xfp_phy.c

@@ -19,9 +19,9 @@
 #include "phy.h"
 #include "falcon.h"
 
-#define XFP_REQUIRED_DEVS (MDIO_MMDREG_DEVS_PCS |	\
-			   MDIO_MMDREG_DEVS_PMAPMD |	\
-			   MDIO_MMDREG_DEVS_PHYXS)
+#define XFP_REQUIRED_DEVS (MDIO_DEVS_PCS |	\
+			   MDIO_DEVS_PMAPMD |	\
+			   MDIO_DEVS_PHYXS)
 
 #define XFP_LOOPBACKS ((1 << LOOPBACK_PCS) |		\
 		       (1 << LOOPBACK_PMAPMD) |		\
@@ -49,8 +49,7 @@
 void xfp_set_led(struct efx_nic *p, int led, int mode)
 {
 	int addr = MDIO_QUAKE_LED0_REG + led;
-	mdio_clause45_write(p, p->mii.phy_id, MDIO_MMD_PMAPMD, addr,
-			    mode);
+	efx_mdio_write(p, MDIO_MMD_PMAPMD, addr, mode);
 }
 
 struct xfp_phy_data {
@@ -63,14 +62,12 @@ struct xfp_phy_data {
 static int qt2025c_wait_reset(struct efx_nic *efx)
 {
 	unsigned long timeout = jiffies + 10 * HZ;
-	int phy_id = efx->mii.phy_id;
 	int reg, old_counter = 0;
 
 	/* Wait for firmware heartbeat to start */
 	for (;;) {
 		int counter;
-		reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_PCS,
-					 PCS_FW_HEARTBEAT_REG);
+		reg = efx_mdio_read(efx, MDIO_MMD_PCS, PCS_FW_HEARTBEAT_REG);
 		if (reg < 0)
 			return reg;
 		counter = ((reg >> PCS_FW_HEARTB_LBN) &
@@ -86,8 +83,7 @@ static int qt2025c_wait_reset(struct efx_nic *efx)
 
 	/* Wait for firmware status to look good */
 	for (;;) {
-		reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_PCS,
-					 PCS_UC8051_STATUS_REG);
+		reg = efx_mdio_read(efx, MDIO_MMD_PCS, PCS_UC8051_STATUS_REG);
 		if (reg < 0)
 			return reg;
 		if ((reg &
@@ -109,7 +105,7 @@ static int xfp_reset_phy(struct efx_nic *efx)
 {
 	int rc;
 
-	rc = mdio_clause45_reset_mmd(efx, MDIO_MMD_PHYXS,
+	rc = efx_mdio_reset_mmd(efx, MDIO_MMD_PHYXS,
 				XFP_MAX_RESET_TIME / XFP_RESET_WAIT,
 				XFP_RESET_WAIT);
 	if (rc < 0)
@@ -126,8 +122,7 @@ static int xfp_reset_phy(struct efx_nic *efx)
 
 	/* Check that all the MMDs we expect are present and responding. We
 	 * expect faults on some if the link is down, but not on the PHY XS */
-	rc = mdio_clause45_check_mmds(efx, XFP_REQUIRED_DEVS,
-				      MDIO_MMDREG_DEVS_PHYXS);
+	rc = efx_mdio_check_mmds(efx, XFP_REQUIRED_DEVS, MDIO_DEVS_PHYXS);
 	if (rc < 0)
 		goto fail;
 
@@ -143,7 +138,7 @@ static int xfp_reset_phy(struct efx_nic *efx)
 static int xfp_phy_init(struct efx_nic *efx)
 {
 	struct xfp_phy_data *phy_data;
-	u32 devid = mdio_clause45_read_id(efx, MDIO_MMD_PHYXS);
+	u32 devid = efx_mdio_read_id(efx, MDIO_MMD_PHYXS);
 	int rc;
 
 	phy_data = kzalloc(sizeof(struct xfp_phy_data), GFP_KERNEL);
@@ -152,8 +147,8 @@ static int xfp_phy_init(struct efx_nic *efx)
 	efx->phy_data = phy_data;
 
 	EFX_INFO(efx, "PHY ID reg %x (OUI %06x model %02x revision %x)\n",
-		 devid, mdio_id_oui(devid), mdio_id_model(devid),
-		 mdio_id_rev(devid));
+		 devid, efx_mdio_id_oui(devid), efx_mdio_id_model(devid),
+		 efx_mdio_id_rev(devid));
 
 	phy_data->phy_mode = efx->phy_mode;
 
@@ -179,7 +174,7 @@ static void xfp_phy_clear_interrupt(struct efx_nic *efx)
 
 static int xfp_link_ok(struct efx_nic *efx)
 {
-	return mdio_clause45_links_ok(efx, XFP_REQUIRED_DEVS);
+	return efx_mdio_links_ok(efx, XFP_REQUIRED_DEVS);
 }
 
 static void xfp_phy_poll(struct efx_nic *efx)
@@ -200,9 +195,9 @@ static void xfp_phy_reconfigure(struct efx_nic *efx)
 		 * or optical transceivers, varying somewhat between
 		 * firmware versions.  Only 'static mode' appears to
 		 * cover everything. */
-		mdio_clause45_set_flag(
-			efx, efx->mii.phy_id, MDIO_MMD_PMAPMD,
-			PMA_PMD_FTX_CTRL2_REG, PMA_PMD_FTX_STATIC_LBN,
+		mdio_set_flag(
+			&efx->mdio, efx->mdio.prtad, MDIO_MMD_PMAPMD,
+			PMA_PMD_FTX_CTRL2_REG, 1 << PMA_PMD_FTX_STATIC_LBN,
 			efx->phy_mode & PHY_MODE_TX_DISABLED ||
 			efx->phy_mode & PHY_MODE_LOW_POWER ||
 			efx->loopback_mode == LOOPBACK_PCS ||
@@ -213,10 +208,10 @@ static void xfp_phy_reconfigure(struct efx_nic *efx)
 		    (phy_data->phy_mode & PHY_MODE_TX_DISABLED))
 			xfp_reset_phy(efx);
 
-		mdio_clause45_transmit_disable(efx);
+		efx_mdio_transmit_disable(efx);
 	}
 
-	mdio_clause45_phy_reconfigure(efx);
+	efx_mdio_phy_reconfigure(efx);
 
 	phy_data->phy_mode = efx->phy_mode;
 	efx->link_up = xfp_link_ok(efx);
@@ -225,6 +220,10 @@ static void xfp_phy_reconfigure(struct efx_nic *efx)
 	efx->link_fc = efx->wanted_fc;
 }
 
+static void xfp_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
+{
+	mdio45_ethtool_gset(&efx->mdio, ecmd);
+}
 
 static void xfp_phy_fini(struct efx_nic *efx)
 {
@@ -243,8 +242,8 @@ struct efx_phy_operations falcon_xfp_phy_ops = {
 	.poll            = xfp_phy_poll,
 	.fini            = xfp_phy_fini,
 	.clear_interrupt = xfp_phy_clear_interrupt,
-	.get_settings    = mdio_clause45_get_settings,
-	.set_settings	 = mdio_clause45_set_settings,
+	.get_settings    = xfp_phy_get_settings,
+	.set_settings	 = efx_mdio_set_settings,
 	.mmds            = XFP_REQUIRED_DEVS,
 	.loopbacks       = XFP_LOOPBACKS,
 };