drivers/staging/octeon/cvmx-mdio.h - linux - Git at Google

 /***********************license start***************
  * Author: Cavium Networks
  *
  * Contact: support@caviumnetworks.com
  * This file is part of the OCTEON SDK
  *
  * Copyright (c) 2003-2008 Cavium Networks
  *
  * This file 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.
  *
  * This file is distributed in the hope that it will be useful, but
  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
  * NONINFRINGEMENT.  See the GNU General Public License for more
  * details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this file; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  * or visit http://www.gnu.org/licenses/.
  *
  * This file may also be available under a different license from Cavium.
  * Contact Cavium Networks for more information
  ***********************license end**************************************/

 /*
  *
  * Interface to the SMI/MDIO hardware, including support for both IEEE 802.3
  * clause 22 and clause 45 operations.
  *
  */

 #ifndef __CVMX_MIO_H__
 #define __CVMX_MIO_H__

 #include "cvmx-smix-defs.h"

 /**
  * PHY register 0 from the 802.3 spec
  */
 #define CVMX_MDIO_PHY_REG_CONTROL 0
 typedef union {
 	uint16_t u16;
 	struct {
 		uint16_t reset:1;
 		uint16_t loopback:1;
 		uint16_t speed_lsb:1;
 		uint16_t autoneg_enable:1;
 		uint16_t power_down:1;
 		uint16_t isolate:1;
 		uint16_t restart_autoneg:1;
 		uint16_t duplex:1;
 		uint16_t collision_test:1;
 		uint16_t speed_msb:1;
 		uint16_t unidirectional_enable:1;
 		uint16_t reserved_0_4:5;
 	} s;
 } cvmx_mdio_phy_reg_control_t;

 /**
  * PHY register 1 from the 802.3 spec
  */
 #define CVMX_MDIO_PHY_REG_STATUS 1
 typedef union {
 	uint16_t u16;
 	struct {
 		uint16_t capable_100base_t4:1;
 		uint16_t capable_100base_x_full:1;
 		uint16_t capable_100base_x_half:1;
 		uint16_t capable_10_full:1;
 		uint16_t capable_10_half:1;
 		uint16_t capable_100base_t2_full:1;
 		uint16_t capable_100base_t2_half:1;
 		uint16_t capable_extended_status:1;
 		uint16_t capable_unidirectional:1;
 		uint16_t capable_mf_preamble_suppression:1;
 		uint16_t autoneg_complete:1;
 		uint16_t remote_fault:1;
 		uint16_t capable_autoneg:1;
 		uint16_t link_status:1;
 		uint16_t jabber_detect:1;
 		uint16_t capable_extended_registers:1;

 	} s;
 } cvmx_mdio_phy_reg_status_t;

 /**
  * PHY register 2 from the 802.3 spec
  */
 #define CVMX_MDIO_PHY_REG_ID1 2
 typedef union {
 	uint16_t u16;
 	struct {
 		uint16_t oui_bits_3_18;
 	} s;
 } cvmx_mdio_phy_reg_id1_t;

 /**
  * PHY register 3 from the 802.3 spec
  */
 #define CVMX_MDIO_PHY_REG_ID2 3
 typedef union {
 	uint16_t u16;
 	struct {
 		uint16_t oui_bits_19_24:6;
 		uint16_t model:6;
 		uint16_t revision:4;
 	} s;
 } cvmx_mdio_phy_reg_id2_t;

 /**
  * PHY register 4 from the 802.3 spec
  */
 #define CVMX_MDIO_PHY_REG_AUTONEG_ADVER 4
 typedef union {
 	uint16_t u16;
 	struct {
 		uint16_t next_page:1;
 		uint16_t reserved_14:1;
 		uint16_t remote_fault:1;
 		uint16_t reserved_12:1;
 		uint16_t asymmetric_pause:1;
 		uint16_t pause:1;
 		uint16_t advert_100base_t4:1;
 		uint16_t advert_100base_tx_full:1;
 		uint16_t advert_100base_tx_half:1;
 		uint16_t advert_10base_tx_full:1;
 		uint16_t advert_10base_tx_half:1;
 		uint16_t selector:5;
 	} s;
 } cvmx_mdio_phy_reg_autoneg_adver_t;

 /**
  * PHY register 5 from the 802.3 spec
  */
 #define CVMX_MDIO_PHY_REG_LINK_PARTNER_ABILITY 5
 typedef union {
 	uint16_t u16;
 	struct {
 		uint16_t next_page:1;
 		uint16_t ack:1;
 		uint16_t remote_fault:1;
 		uint16_t reserved_12:1;
 		uint16_t asymmetric_pause:1;
 		uint16_t pause:1;
 		uint16_t advert_100base_t4:1;
 		uint16_t advert_100base_tx_full:1;
 		uint16_t advert_100base_tx_half:1;
 		uint16_t advert_10base_tx_full:1;
 		uint16_t advert_10base_tx_half:1;
 		uint16_t selector:5;
 	} s;
 } cvmx_mdio_phy_reg_link_partner_ability_t;

 /**
  * PHY register 6 from the 802.3 spec
  */
 #define CVMX_MDIO_PHY_REG_AUTONEG_EXPANSION 6
 typedef union {
 	uint16_t u16;
 	struct {
 		uint16_t reserved_5_15:11;
 		uint16_t parallel_detection_fault:1;
 		uint16_t link_partner_next_page_capable:1;
 		uint16_t local_next_page_capable:1;
 		uint16_t page_received:1;
 		uint16_t link_partner_autoneg_capable:1;

 	} s;
 } cvmx_mdio_phy_reg_autoneg_expansion_t;

 /**
  * PHY register 9 from the 802.3 spec
  */
 #define CVMX_MDIO_PHY_REG_CONTROL_1000 9
 typedef union {
 	uint16_t u16;
 	struct {
 		uint16_t test_mode:3;
 		uint16_t manual_master_slave:1;
 		uint16_t master:1;
 		uint16_t port_type:1;
 		uint16_t advert_1000base_t_full:1;
 		uint16_t advert_1000base_t_half:1;
 		uint16_t reserved_0_7:8;
 	} s;
 } cvmx_mdio_phy_reg_control_1000_t;

 /**
  * PHY register 10 from the 802.3 spec
  */
 #define CVMX_MDIO_PHY_REG_STATUS_1000 10
 typedef union {
 	uint16_t u16;
 	struct {
 		uint16_t master_slave_fault:1;
 		uint16_t is_master:1;
 		uint16_t local_receiver_ok:1;
 		uint16_t remote_receiver_ok:1;
 		uint16_t remote_capable_1000base_t_full:1;
 		uint16_t remote_capable_1000base_t_half:1;
 		uint16_t reserved_8_9:2;
 		uint16_t idle_error_count:8;
 	} s;
 } cvmx_mdio_phy_reg_status_1000_t;

 /**
  * PHY register 15 from the 802.3 spec
  */
 #define CVMX_MDIO_PHY_REG_EXTENDED_STATUS 15
 typedef union {
 	uint16_t u16;
 	struct {
 		uint16_t capable_1000base_x_full:1;
 		uint16_t capable_1000base_x_half:1;
 		uint16_t capable_1000base_t_full:1;
 		uint16_t capable_1000base_t_half:1;
 		uint16_t reserved_0_11:12;
 	} s;
 } cvmx_mdio_phy_reg_extended_status_t;

 /**
  * PHY register 13 from the 802.3 spec
  */
 #define CVMX_MDIO_PHY_REG_MMD_CONTROL 13
 typedef union {
 	uint16_t u16;
 	struct {
 		uint16_t function:2;
 		uint16_t reserved_5_13:9;
 		uint16_t devad:5;
 	} s;
 } cvmx_mdio_phy_reg_mmd_control_t;

 /**
  * PHY register 14 from the 802.3 spec
  */
 #define CVMX_MDIO_PHY_REG_MMD_ADDRESS_DATA 14
 typedef union {
 	uint16_t u16;
 	struct {
 		uint16_t address_data:16;
 	} s;
 } cvmx_mdio_phy_reg_mmd_address_data_t;

 /* Operating request encodings. */
 #define MDIO_CLAUSE_22_WRITE    0
 #define MDIO_CLAUSE_22_READ     1

 #define MDIO_CLAUSE_45_ADDRESS  0
 #define MDIO_CLAUSE_45_WRITE    1
 #define MDIO_CLAUSE_45_READ_INC 2
 #define MDIO_CLAUSE_45_READ     3

 /* MMD identifiers, mostly for accessing devices within XENPAK modules. */
 #define CVMX_MMD_DEVICE_PMA_PMD      1
 #define CVMX_MMD_DEVICE_WIS          2
 #define CVMX_MMD_DEVICE_PCS          3
 #define CVMX_MMD_DEVICE_PHY_XS       4
 #define CVMX_MMD_DEVICE_DTS_XS       5
 #define CVMX_MMD_DEVICE_TC           6
 #define CVMX_MMD_DEVICE_CL22_EXT     29
 #define CVMX_MMD_DEVICE_VENDOR_1     30
 #define CVMX_MMD_DEVICE_VENDOR_2     31

 /* Helper function to put MDIO interface into clause 45 mode */
 static inline void __cvmx_mdio_set_clause45_mode(int bus_id)
 {
 	union cvmx_smix_clk smi_clk;
 	/* Put bus into clause 45 mode */
 	smi_clk.u64 = cvmx_read_csr(CVMX_SMIX_CLK(bus_id));
 	smi_clk.s.mode = 1;
 	smi_clk.s.preamble = 1;
 	cvmx_write_csr(CVMX_SMIX_CLK(bus_id), smi_clk.u64);
 }

 /* Helper function to put MDIO interface into clause 22 mode */
 static inline void __cvmx_mdio_set_clause22_mode(int bus_id)
 {
 	union cvmx_smix_clk smi_clk;
 	/* Put bus into clause 22 mode */
 	smi_clk.u64 = cvmx_read_csr(CVMX_SMIX_CLK(bus_id));
 	smi_clk.s.mode = 0;
 	cvmx_write_csr(CVMX_SMIX_CLK(bus_id), smi_clk.u64);
 }

 /**
  * Perform an MII read. This function is used to read PHY
  * registers controlling auto negotiation.
  *
  * @bus_id:   MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
  *                 support multiple busses.
  * @phy_id:   The MII phy id
  * @location: Register location to read
  *
  * Returns Result from the read or -1 on failure
  */
 static inline int cvmx_mdio_read(int bus_id, int phy_id, int location)
 {
 	union cvmx_smix_cmd smi_cmd;
 	union cvmx_smix_rd_dat smi_rd;
 	int timeout = 1000;

 	if (octeon_has_feature(OCTEON_FEATURE_MDIO_CLAUSE_45))
 		__cvmx_mdio_set_clause22_mode(bus_id);

 	smi_cmd.u64 = 0;
 	smi_cmd.s.phy_op = MDIO_CLAUSE_22_READ;
 	smi_cmd.s.phy_adr = phy_id;
 	smi_cmd.s.reg_adr = location;
 	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);

 	do {
 		cvmx_wait(1000);
 		smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(bus_id));
 	} while (smi_rd.s.pending && timeout--);

 	if (smi_rd.s.val)
 		return smi_rd.s.dat;
 	else
 		return -1;
 }

 /**
  * Perform an MII write. This function is used to write PHY
  * registers controlling auto negotiation.
  *
  * @bus_id:   MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
  *                 support multiple busses.
  * @phy_id:   The MII phy id
  * @location: Register location to write
  * @val:      Value to write
  *
  * Returns -1 on error
  *         0 on success
  */
 static inline int cvmx_mdio_write(int bus_id, int phy_id, int location, int val)
 {
 	union cvmx_smix_cmd smi_cmd;
 	union cvmx_smix_wr_dat smi_wr;
 	int timeout = 1000;

 	if (octeon_has_feature(OCTEON_FEATURE_MDIO_CLAUSE_45))
 		__cvmx_mdio_set_clause22_mode(bus_id);

 	smi_wr.u64 = 0;
 	smi_wr.s.dat = val;
 	cvmx_write_csr(CVMX_SMIX_WR_DAT(bus_id), smi_wr.u64);

 	smi_cmd.u64 = 0;
 	smi_cmd.s.phy_op = MDIO_CLAUSE_22_WRITE;
 	smi_cmd.s.phy_adr = phy_id;
 	smi_cmd.s.reg_adr = location;
 	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);

 	do {
 		cvmx_wait(1000);
 		smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(bus_id));
 	} while (smi_wr.s.pending && --timeout);
 	if (timeout <= 0)
 		return -1;

 	return 0;
 }

 /**
  * Perform an IEEE 802.3 clause 45 MII read. This function is used to
  * read PHY registers controlling auto negotiation.
  *
  * @bus_id:   MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
  *                 support multiple busses.
  * @phy_id:   The MII phy id
  * @device:   MDIO Managable Device (MMD) id
  * @location: Register location to read
  *
  * Returns Result from the read or -1 on failure
  */

 static inline int cvmx_mdio_45_read(int bus_id, int phy_id, int device,
 				    int location)
 {
 	union cvmx_smix_cmd smi_cmd;
 	union cvmx_smix_rd_dat smi_rd;
 	union cvmx_smix_wr_dat smi_wr;
 	int timeout = 1000;

 	if (!octeon_has_feature(OCTEON_FEATURE_MDIO_CLAUSE_45))
 		return -1;

 	__cvmx_mdio_set_clause45_mode(bus_id);

 	smi_wr.u64 = 0;
 	smi_wr.s.dat = location;
 	cvmx_write_csr(CVMX_SMIX_WR_DAT(bus_id), smi_wr.u64);

 	smi_cmd.u64 = 0;
 	smi_cmd.s.phy_op = MDIO_CLAUSE_45_ADDRESS;
 	smi_cmd.s.phy_adr = phy_id;
 	smi_cmd.s.reg_adr = device;
 	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);

 	do {
 		cvmx_wait(1000);
 		smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(bus_id));
 	} while (smi_wr.s.pending && --timeout);
 	if (timeout <= 0) {
 		cvmx_dprintf("cvmx_mdio_45_read: bus_id %d phy_id %2d "
 			     "device %2d register %2d   TIME OUT(address)\n",
 		     bus_id, phy_id, device, location);
 		return -1;
 	}

 	smi_cmd.u64 = 0;
 	smi_cmd.s.phy_op = MDIO_CLAUSE_45_READ;
 	smi_cmd.s.phy_adr = phy_id;
 	smi_cmd.s.reg_adr = device;
 	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);

 	do {
 		cvmx_wait(1000);
 		smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(bus_id));
 	} while (smi_rd.s.pending && --timeout);

 	if (timeout <= 0) {
 		cvmx_dprintf("cvmx_mdio_45_read: bus_id %d phy_id %2d "
 			     "device %2d register %2d   TIME OUT(data)\n",
 		     bus_id, phy_id, device, location);
 		return -1;
 	}

 	if (smi_rd.s.val)
 		return smi_rd.s.dat;
 	else {
 		cvmx_dprintf("cvmx_mdio_45_read: bus_id %d phy_id %2d "
 			     "device %2d register %2d   INVALID READ\n",
 		     bus_id, phy_id, device, location);
 		return -1;
 	}
 }

 /**
  * Perform an IEEE 802.3 clause 45 MII write. This function is used to
  * write PHY registers controlling auto negotiation.
  *
  * @bus_id:   MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
  *                 support multiple busses.
  * @phy_id:   The MII phy id
  * @device:   MDIO Managable Device (MMD) id
  * @location: Register location to write
  * @val:      Value to write
  *
  * Returns -1 on error
  *         0 on success
  */
 static inline int cvmx_mdio_45_write(int bus_id, int phy_id, int device,
 				     int location, int val)
 {
 	union cvmx_smix_cmd smi_cmd;
 	union cvmx_smix_wr_dat smi_wr;
 	int timeout = 1000;

 	if (!octeon_has_feature(OCTEON_FEATURE_MDIO_CLAUSE_45))
 		return -1;

 	__cvmx_mdio_set_clause45_mode(bus_id);

 	smi_wr.u64 = 0;
 	smi_wr.s.dat = location;
 	cvmx_write_csr(CVMX_SMIX_WR_DAT(bus_id), smi_wr.u64);

 	smi_cmd.u64 = 0;
 	smi_cmd.s.phy_op = MDIO_CLAUSE_45_ADDRESS;
 	smi_cmd.s.phy_adr = phy_id;
 	smi_cmd.s.reg_adr = device;
 	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);

 	do {
 		cvmx_wait(1000);
 		smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(bus_id));
 	} while (smi_wr.s.pending && --timeout);
 	if (timeout <= 0)
 		return -1;

 	smi_wr.u64 = 0;
 	smi_wr.s.dat = val;
 	cvmx_write_csr(CVMX_SMIX_WR_DAT(bus_id), smi_wr.u64);

 	smi_cmd.u64 = 0;
 	smi_cmd.s.phy_op = MDIO_CLAUSE_45_WRITE;
 	smi_cmd.s.phy_adr = phy_id;
 	smi_cmd.s.reg_adr = device;
 	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);

 	do {
 		cvmx_wait(1000);
 		smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(bus_id));
 	} while (smi_wr.s.pending && --timeout);
 	if (timeout <= 0)
 		return -1;

 	return 0;
 }

 #endif
	/*********************license start*************
	* Author: Cavium Networks
	*
	* Contact: support@caviumnetworks.com
	* This file is part of the OCTEON SDK
	*
	* Copyright (c) 2003-2008 Cavium Networks
	*
	* This file 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.
	*
	* This file is distributed in the hope that it will be useful, but
	* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
	* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
	* NONINFRINGEMENT. See the GNU General Public License for more
	* details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this file; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	* or visit http://www.gnu.org/licenses/.
	*
	* This file may also be available under a different license from Cavium.
	* Contact Cavium Networks for more information
	*********************license end************************************/

	/*
	*
	* Interface to the SMI/MDIO hardware, including support for both IEEE 802.3
	* clause 22 and clause 45 operations.
	*
	*/

	#ifndef __CVMX_MIO_H__
	#define __CVMX_MIO_H__

	#include "cvmx-smix-defs.h"

	/**
	* PHY register 0 from the 802.3 spec
	*/
	#define CVMX_MDIO_PHY_REG_CONTROL 0
	typedef union {
	uint16_t u16;
	struct {
	uint16_t reset:1;
	uint16_t loopback:1;
	uint16_t speed_lsb:1;
	uint16_t autoneg_enable:1;
	uint16_t power_down:1;
	uint16_t isolate:1;
	uint16_t restart_autoneg:1;
	uint16_t duplex:1;
	uint16_t collision_test:1;
	uint16_t speed_msb:1;
	uint16_t unidirectional_enable:1;
	uint16_t reserved_0_4:5;
	} s;
	} cvmx_mdio_phy_reg_control_t;

	/**
	* PHY register 1 from the 802.3 spec
	*/
	#define CVMX_MDIO_PHY_REG_STATUS 1
	typedef union {
	uint16_t u16;
	struct {
	uint16_t capable_100base_t4:1;
	uint16_t capable_100base_x_full:1;
	uint16_t capable_100base_x_half:1;
	uint16_t capable_10_full:1;
	uint16_t capable_10_half:1;
	uint16_t capable_100base_t2_full:1;
	uint16_t capable_100base_t2_half:1;
	uint16_t capable_extended_status:1;
	uint16_t capable_unidirectional:1;
	uint16_t capable_mf_preamble_suppression:1;
	uint16_t autoneg_complete:1;
	uint16_t remote_fault:1;
	uint16_t capable_autoneg:1;
	uint16_t link_status:1;
	uint16_t jabber_detect:1;
	uint16_t capable_extended_registers:1;

	} s;
	} cvmx_mdio_phy_reg_status_t;

	/**
	* PHY register 2 from the 802.3 spec
	*/
	#define CVMX_MDIO_PHY_REG_ID1 2
	typedef union {
	uint16_t u16;
	struct {
	uint16_t oui_bits_3_18;
	} s;
	} cvmx_mdio_phy_reg_id1_t;

	/**
	* PHY register 3 from the 802.3 spec
	*/
	#define CVMX_MDIO_PHY_REG_ID2 3
	typedef union {
	uint16_t u16;
	struct {
	uint16_t oui_bits_19_24:6;
	uint16_t model:6;
	uint16_t revision:4;
	} s;
	} cvmx_mdio_phy_reg_id2_t;

	/**
	* PHY register 4 from the 802.3 spec
	*/
	#define CVMX_MDIO_PHY_REG_AUTONEG_ADVER 4
	typedef union {
	uint16_t u16;
	struct {
	uint16_t next_page:1;
	uint16_t reserved_14:1;
	uint16_t remote_fault:1;
	uint16_t reserved_12:1;
	uint16_t asymmetric_pause:1;
	uint16_t pause:1;
	uint16_t advert_100base_t4:1;
	uint16_t advert_100base_tx_full:1;
	uint16_t advert_100base_tx_half:1;
	uint16_t advert_10base_tx_full:1;
	uint16_t advert_10base_tx_half:1;
	uint16_t selector:5;
	} s;
	} cvmx_mdio_phy_reg_autoneg_adver_t;

	/**
	* PHY register 5 from the 802.3 spec
	*/
	#define CVMX_MDIO_PHY_REG_LINK_PARTNER_ABILITY 5
	typedef union {
	uint16_t u16;
	struct {
	uint16_t next_page:1;
	uint16_t ack:1;
	uint16_t remote_fault:1;
	uint16_t reserved_12:1;
	uint16_t asymmetric_pause:1;
	uint16_t pause:1;
	uint16_t advert_100base_t4:1;
	uint16_t advert_100base_tx_full:1;
	uint16_t advert_100base_tx_half:1;
	uint16_t advert_10base_tx_full:1;
	uint16_t advert_10base_tx_half:1;
	uint16_t selector:5;
	} s;
	} cvmx_mdio_phy_reg_link_partner_ability_t;

	/**
	* PHY register 6 from the 802.3 spec
	*/
	#define CVMX_MDIO_PHY_REG_AUTONEG_EXPANSION 6
	typedef union {
	uint16_t u16;
	struct {
	uint16_t reserved_5_15:11;
	uint16_t parallel_detection_fault:1;
	uint16_t link_partner_next_page_capable:1;
	uint16_t local_next_page_capable:1;
	uint16_t page_received:1;
	uint16_t link_partner_autoneg_capable:1;

	} s;
	} cvmx_mdio_phy_reg_autoneg_expansion_t;

	/**
	* PHY register 9 from the 802.3 spec
	*/
	#define CVMX_MDIO_PHY_REG_CONTROL_1000 9
	typedef union {
	uint16_t u16;
	struct {
	uint16_t test_mode:3;
	uint16_t manual_master_slave:1;
	uint16_t master:1;
	uint16_t port_type:1;
	uint16_t advert_1000base_t_full:1;
	uint16_t advert_1000base_t_half:1;
	uint16_t reserved_0_7:8;
	} s;
	} cvmx_mdio_phy_reg_control_1000_t;

	/**
	* PHY register 10 from the 802.3 spec
	*/
	#define CVMX_MDIO_PHY_REG_STATUS_1000 10
	typedef union {
	uint16_t u16;
	struct {
	uint16_t master_slave_fault:1;
	uint16_t is_master:1;
	uint16_t local_receiver_ok:1;
	uint16_t remote_receiver_ok:1;
	uint16_t remote_capable_1000base_t_full:1;
	uint16_t remote_capable_1000base_t_half:1;
	uint16_t reserved_8_9:2;
	uint16_t idle_error_count:8;
	} s;
	} cvmx_mdio_phy_reg_status_1000_t;

	/**
	* PHY register 15 from the 802.3 spec
	*/
	#define CVMX_MDIO_PHY_REG_EXTENDED_STATUS 15
	typedef union {
	uint16_t u16;
	struct {
	uint16_t capable_1000base_x_full:1;
	uint16_t capable_1000base_x_half:1;
	uint16_t capable_1000base_t_full:1;
	uint16_t capable_1000base_t_half:1;
	uint16_t reserved_0_11:12;
	} s;
	} cvmx_mdio_phy_reg_extended_status_t;

	/**
	* PHY register 13 from the 802.3 spec
	*/
	#define CVMX_MDIO_PHY_REG_MMD_CONTROL 13
	typedef union {
	uint16_t u16;
	struct {
	uint16_t function:2;
	uint16_t reserved_5_13:9;
	uint16_t devad:5;
	} s;
	} cvmx_mdio_phy_reg_mmd_control_t;

	/**
	* PHY register 14 from the 802.3 spec
	*/
	#define CVMX_MDIO_PHY_REG_MMD_ADDRESS_DATA 14
	typedef union {
	uint16_t u16;
	struct {
	uint16_t address_data:16;
	} s;
	} cvmx_mdio_phy_reg_mmd_address_data_t;

	/* Operating request encodings. */
	#define MDIO_CLAUSE_22_WRITE 0
	#define MDIO_CLAUSE_22_READ 1

	#define MDIO_CLAUSE_45_ADDRESS 0
	#define MDIO_CLAUSE_45_WRITE 1
	#define MDIO_CLAUSE_45_READ_INC 2
	#define MDIO_CLAUSE_45_READ 3

	/* MMD identifiers, mostly for accessing devices within XENPAK modules. */
	#define CVMX_MMD_DEVICE_PMA_PMD 1
	#define CVMX_MMD_DEVICE_WIS 2
	#define CVMX_MMD_DEVICE_PCS 3
	#define CVMX_MMD_DEVICE_PHY_XS 4
	#define CVMX_MMD_DEVICE_DTS_XS 5
	#define CVMX_MMD_DEVICE_TC 6
	#define CVMX_MMD_DEVICE_CL22_EXT 29
	#define CVMX_MMD_DEVICE_VENDOR_1 30
	#define CVMX_MMD_DEVICE_VENDOR_2 31

	/* Helper function to put MDIO interface into clause 45 mode */
	static inline void __cvmx_mdio_set_clause45_mode(int bus_id)
	{
	union cvmx_smix_clk smi_clk;
	/* Put bus into clause 45 mode */
	smi_clk.u64 = cvmx_read_csr(CVMX_SMIX_CLK(bus_id));
	smi_clk.s.mode = 1;
	smi_clk.s.preamble = 1;
	cvmx_write_csr(CVMX_SMIX_CLK(bus_id), smi_clk.u64);
	}

	/* Helper function to put MDIO interface into clause 22 mode */
	static inline void __cvmx_mdio_set_clause22_mode(int bus_id)
	{
	union cvmx_smix_clk smi_clk;
	/* Put bus into clause 22 mode */
	smi_clk.u64 = cvmx_read_csr(CVMX_SMIX_CLK(bus_id));
	smi_clk.s.mode = 0;
	cvmx_write_csr(CVMX_SMIX_CLK(bus_id), smi_clk.u64);
	}

	/**
	* Perform an MII read. This function is used to read PHY
	* registers controlling auto negotiation.
	*
	* @bus_id: MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
	* support multiple busses.
	* @phy_id: The MII phy id
	* @location: Register location to read
	*
	* Returns Result from the read or -1 on failure
	*/
	static inline int cvmx_mdio_read(int bus_id, int phy_id, int location)
	{
	union cvmx_smix_cmd smi_cmd;
	union cvmx_smix_rd_dat smi_rd;
	int timeout = 1000;

	if (octeon_has_feature(OCTEON_FEATURE_MDIO_CLAUSE_45))
	__cvmx_mdio_set_clause22_mode(bus_id);

	smi_cmd.u64 = 0;
	smi_cmd.s.phy_op = MDIO_CLAUSE_22_READ;
	smi_cmd.s.phy_adr = phy_id;
	smi_cmd.s.reg_adr = location;
	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);

	do {
	cvmx_wait(1000);
	smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(bus_id));
	} while (smi_rd.s.pending && timeout--);

	if (smi_rd.s.val)
	return smi_rd.s.dat;
	else
	return -1;
	}

	/**
	* Perform an MII write. This function is used to write PHY
	* registers controlling auto negotiation.
	*
	* @bus_id: MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
	* support multiple busses.
	* @phy_id: The MII phy id
	* @location: Register location to write
	* @val: Value to write
	*
	* Returns -1 on error
	* 0 on success
	*/
	static inline int cvmx_mdio_write(int bus_id, int phy_id, int location, int val)
	{
	union cvmx_smix_cmd smi_cmd;
	union cvmx_smix_wr_dat smi_wr;
	int timeout = 1000;

	if (octeon_has_feature(OCTEON_FEATURE_MDIO_CLAUSE_45))
	__cvmx_mdio_set_clause22_mode(bus_id);

	smi_wr.u64 = 0;
	smi_wr.s.dat = val;
	cvmx_write_csr(CVMX_SMIX_WR_DAT(bus_id), smi_wr.u64);

	smi_cmd.u64 = 0;
	smi_cmd.s.phy_op = MDIO_CLAUSE_22_WRITE;
	smi_cmd.s.phy_adr = phy_id;
	smi_cmd.s.reg_adr = location;
	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);

	do {
	cvmx_wait(1000);
	smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(bus_id));
	} while (smi_wr.s.pending && --timeout);
	if (timeout <= 0)
	return -1;

	return 0;
	}

	/**
	* Perform an IEEE 802.3 clause 45 MII read. This function is used to
	* read PHY registers controlling auto negotiation.
	*
	* @bus_id: MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
	* support multiple busses.
	* @phy_id: The MII phy id
	* @device: MDIO Managable Device (MMD) id
	* @location: Register location to read
	*
	* Returns Result from the read or -1 on failure
	*/

	static inline int cvmx_mdio_45_read(int bus_id, int phy_id, int device,
	int location)
	{
	union cvmx_smix_cmd smi_cmd;
	union cvmx_smix_rd_dat smi_rd;
	union cvmx_smix_wr_dat smi_wr;
	int timeout = 1000;

	if (!octeon_has_feature(OCTEON_FEATURE_MDIO_CLAUSE_45))
	return -1;

	__cvmx_mdio_set_clause45_mode(bus_id);

	smi_wr.u64 = 0;
	smi_wr.s.dat = location;
	cvmx_write_csr(CVMX_SMIX_WR_DAT(bus_id), smi_wr.u64);

	smi_cmd.u64 = 0;
	smi_cmd.s.phy_op = MDIO_CLAUSE_45_ADDRESS;
	smi_cmd.s.phy_adr = phy_id;
	smi_cmd.s.reg_adr = device;
	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);

	do {
	cvmx_wait(1000);
	smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(bus_id));
	} while (smi_wr.s.pending && --timeout);
	if (timeout <= 0) {
	cvmx_dprintf("cvmx_mdio_45_read: bus_id %d phy_id %2d "
	"device %2d register %2d TIME OUT(address)\n",
	bus_id, phy_id, device, location);
	return -1;
	}

	smi_cmd.u64 = 0;
	smi_cmd.s.phy_op = MDIO_CLAUSE_45_READ;
	smi_cmd.s.phy_adr = phy_id;
	smi_cmd.s.reg_adr = device;
	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);

	do {
	cvmx_wait(1000);
	smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(bus_id));
	} while (smi_rd.s.pending && --timeout);

	if (timeout <= 0) {
	cvmx_dprintf("cvmx_mdio_45_read: bus_id %d phy_id %2d "
	"device %2d register %2d TIME OUT(data)\n",
	bus_id, phy_id, device, location);
	return -1;
	}

	if (smi_rd.s.val)
	return smi_rd.s.dat;
	else {
	cvmx_dprintf("cvmx_mdio_45_read: bus_id %d phy_id %2d "
	"device %2d register %2d INVALID READ\n",
	bus_id, phy_id, device, location);
	return -1;
	}
	}

	/**
	* Perform an IEEE 802.3 clause 45 MII write. This function is used to
	* write PHY registers controlling auto negotiation.
	*
	* @bus_id: MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
	* support multiple busses.
	* @phy_id: The MII phy id
	* @device: MDIO Managable Device (MMD) id
	* @location: Register location to write
	* @val: Value to write
	*
	* Returns -1 on error
	* 0 on success
	*/
	static inline int cvmx_mdio_45_write(int bus_id, int phy_id, int device,
	int location, int val)
	{
	union cvmx_smix_cmd smi_cmd;
	union cvmx_smix_wr_dat smi_wr;
	int timeout = 1000;

	if (!octeon_has_feature(OCTEON_FEATURE_MDIO_CLAUSE_45))
	return -1;

	__cvmx_mdio_set_clause45_mode(bus_id);

	smi_wr.u64 = 0;
	smi_wr.s.dat = location;
	cvmx_write_csr(CVMX_SMIX_WR_DAT(bus_id), smi_wr.u64);

	smi_cmd.u64 = 0;
	smi_cmd.s.phy_op = MDIO_CLAUSE_45_ADDRESS;
	smi_cmd.s.phy_adr = phy_id;
	smi_cmd.s.reg_adr = device;
	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);

	do {
	cvmx_wait(1000);
	smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(bus_id));
	} while (smi_wr.s.pending && --timeout);
	if (timeout <= 0)
	return -1;

	smi_wr.u64 = 0;
	smi_wr.s.dat = val;
	cvmx_write_csr(CVMX_SMIX_WR_DAT(bus_id), smi_wr.u64);

	smi_cmd.u64 = 0;
	smi_cmd.s.phy_op = MDIO_CLAUSE_45_WRITE;
	smi_cmd.s.phy_adr = phy_id;
	smi_cmd.s.reg_adr = device;
	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);

	do {
	cvmx_wait(1000);
	smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(bus_id));
	} while (smi_wr.s.pending && --timeout);
	if (timeout <= 0)
	return -1;

	return 0;
	}

	#endif