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/***********************license start***************
* Copyright (c) 2003-2010 Cavium Networks (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of Cavium Networks nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
* This Software, including technical data, may be subject to U.S. export control
* laws, including the U.S. Export Administration Act and its associated
* regulations, and may be subject to export or import regulations in other
* countries.
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR
* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
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* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
***********************license end**************************************/
/**
* @file
*
* Interface to the SMI/MDIO hardware, including support for both IEEE 802.3
* clause 22 and clause 45 operations.
*
* <hr>$Revision: 52004 $<hr>
*/
#ifndef __CVMX_MIO_H__
#define __CVMX_MIO_H__
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
#include <asm/octeon/octeon.h>
#include <asm/octeon/cvmx-clock.h>
#else
#include "cvmx-clock.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
/**
* 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 withing 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
#define CVMX_MDIO_TIMEOUT 100000 /* 100 millisec */
/* Helper function to put MDIO interface into clause 45 mode */
static inline void __cvmx_mdio_set_clause45_mode(int bus_id)
{
cvmx_smix_clk_t 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)
{
cvmx_smix_clk_t 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);
}
/**
* @INTERNAL
* Function to read SMIX_RD_DAT and check for timeouts. This
* code sequence is done fairly often, so put in in one spot.
*
* @param bus_id SMI/MDIO bus to read
*
* @return Value of SMIX_RD_DAT. pending will be set on
* a timeout.
*/
static inline cvmx_smix_rd_dat_t __cvmx_mdio_read_rd_dat(int bus_id)
{
cvmx_smix_rd_dat_t smi_rd;
uint64_t done = cvmx_get_cycle() + (uint64_t)CVMX_MDIO_TIMEOUT *
cvmx_clock_get_rate(CVMX_CLOCK_CORE) / 1000000;
do
{
cvmx_wait(1000);
smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(bus_id));
} while (smi_rd.s.pending && (cvmx_get_cycle() < done));
return smi_rd;
}
/**
* Perform an MII read. This function is used to read PHY
* registers controlling auto negotiation.
*
* @param bus_id MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
* support multiple busses.
* @param phy_id The MII phy id
* @param location Register location to read
*
* @return Result from the read or -1 on failure
*/
static inline int cvmx_mdio_read(int bus_id, int phy_id, int location)
{
#if defined(CVMX_BUILD_FOR_LINUX_KERNEL) && defined(CONFIG_PHYLIB)
struct mii_bus *bus;
int rv;
BUG_ON(bus_id > 1 || bus_id < 0);
bus = octeon_mdiobuses[bus_id];
if (bus == NULL)
return -1;
rv = mdiobus_read(bus, phy_id, location);
if (rv < 0)
return -1;
return rv;
#else
cvmx_smix_cmd_t smi_cmd;
cvmx_smix_rd_dat_t smi_rd;
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);
smi_rd = __cvmx_mdio_read_rd_dat(bus_id);
if (smi_rd.s.val)
return smi_rd.s.dat;
else
return -1;
#endif
}
/**
* Perform an MII write. This function is used to write PHY
* registers controlling auto negotiation.
*
* @param bus_id MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
* support multiple busses.
* @param phy_id The MII phy id
* @param location Register location to write
* @param val Value to write
*
* @return -1 on error
* 0 on success
*/
static inline int cvmx_mdio_write(int bus_id, int phy_id, int location, int val)
{
#if defined(CVMX_BUILD_FOR_LINUX_KERNEL) && defined(CONFIG_PHYLIB)
struct mii_bus *bus;
int rv;
BUG_ON(bus_id > 1 || bus_id < 0);
bus = octeon_mdiobuses[bus_id];
if (bus == NULL)
return -1;
rv = mdiobus_write(bus, phy_id, location, (u16)val);
if (rv < 0)
return -1;
return 0;
#else
cvmx_smix_cmd_t smi_cmd;
cvmx_smix_wr_dat_t smi_wr;
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);
if (CVMX_WAIT_FOR_FIELD64(CVMX_SMIX_WR_DAT(bus_id),
cvmx_smix_wr_dat_t, pending, ==, 0, CVMX_MDIO_TIMEOUT))
return -1;
return 0;
#endif
}
#ifndef CVMX_BUILD_FOR_LINUX_KERNEL
/**
* Perform an IEEE 802.3 clause 45 MII read. This function is used to read PHY
* registers controlling auto negotiation.
*
* @param bus_id MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
* support multiple busses.
* @param phy_id The MII phy id
* @param device MDIO Managable Device (MMD) id
* @param location Register location to read
*
* @return 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)
{
cvmx_smix_cmd_t smi_cmd;
cvmx_smix_rd_dat_t smi_rd;
cvmx_smix_wr_dat_t smi_wr;
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);
if (CVMX_WAIT_FOR_FIELD64(CVMX_SMIX_WR_DAT(bus_id),
cvmx_smix_wr_dat_t, pending, ==, 0, CVMX_MDIO_TIMEOUT))
{
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);
smi_rd = __cvmx_mdio_read_rd_dat(bus_id);
if (smi_rd.s.pending)
{
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.
*
* @param bus_id MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
* support multiple busses.
* @param phy_id The MII phy id
* @param device MDIO Managable Device (MMD) id
* @param location Register location to write
* @param val Value to write
*
* @return -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)
{
cvmx_smix_cmd_t smi_cmd;
cvmx_smix_wr_dat_t smi_wr;
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);
if (CVMX_WAIT_FOR_FIELD64(CVMX_SMIX_WR_DAT(bus_id),
cvmx_smix_wr_dat_t, pending, ==, 0, CVMX_MDIO_TIMEOUT))
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);
if (CVMX_WAIT_FOR_FIELD64(CVMX_SMIX_WR_DAT(bus_id),
cvmx_smix_wr_dat_t, pending, ==, 0, CVMX_MDIO_TIMEOUT))
return -1;
return 0;
}
#endif
#ifdef __cplusplus
}
#endif
#endif