9326e3614d
Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
232 lines
5.7 KiB
C
232 lines
5.7 KiB
C
/**********************************************************************
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* Author: Cavium Networks
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*
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* Contact: support@caviumnetworks.com
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* This file is part of the OCTEON SDK
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*
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* Copyright (c) 2003-2007 Cavium Networks
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, Version 2, as
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* published by the Free Software Foundation.
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*
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* This file is distributed in the hope that it will be useful, but
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* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
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* NONINFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this file; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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* or visit http://www.gnu.org/licenses/.
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*
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* This file may also be available under a different license from Cavium.
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* Contact Cavium Networks for more information
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**********************************************************************/
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#include <linux/kernel.h>
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#include <linux/ethtool.h>
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#include <linux/mii.h>
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#include <net/dst.h>
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#include <asm/octeon/octeon.h>
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#include "ethernet-defines.h"
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#include "octeon-ethernet.h"
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#include "ethernet-mdio.h"
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#include "cvmx-helper-board.h"
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#include "cvmx-smix-defs.h"
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DECLARE_MUTEX(mdio_sem);
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/**
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* Perform an MII read. Called by the generic MII routines
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*
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* @dev: Device to perform read for
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* @phy_id: The MII phy id
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* @location: Register location to read
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* Returns Result from the read or zero on failure
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*/
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static int cvm_oct_mdio_read(struct net_device *dev, int phy_id, int location)
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{
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union cvmx_smix_cmd smi_cmd;
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union cvmx_smix_rd_dat smi_rd;
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smi_cmd.u64 = 0;
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smi_cmd.s.phy_op = 1;
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smi_cmd.s.phy_adr = phy_id;
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smi_cmd.s.reg_adr = location;
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cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
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do {
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if (!in_interrupt())
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yield();
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smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(0));
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} while (smi_rd.s.pending);
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if (smi_rd.s.val)
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return smi_rd.s.dat;
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else
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return 0;
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}
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static int cvm_oct_mdio_dummy_read(struct net_device *dev, int phy_id,
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int location)
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{
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return 0xffff;
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}
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/**
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* Perform an MII write. Called by the generic MII routines
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*
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* @dev: Device to perform write for
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* @phy_id: The MII phy id
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* @location: Register location to write
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* @val: Value to write
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*/
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static void cvm_oct_mdio_write(struct net_device *dev, int phy_id, int location,
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int val)
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{
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union cvmx_smix_cmd smi_cmd;
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union cvmx_smix_wr_dat smi_wr;
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smi_wr.u64 = 0;
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smi_wr.s.dat = val;
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cvmx_write_csr(CVMX_SMIX_WR_DAT(0), smi_wr.u64);
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smi_cmd.u64 = 0;
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smi_cmd.s.phy_op = 0;
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smi_cmd.s.phy_adr = phy_id;
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smi_cmd.s.reg_adr = location;
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cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
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do {
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if (!in_interrupt())
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yield();
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smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(0));
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} while (smi_wr.s.pending);
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}
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static void cvm_oct_mdio_dummy_write(struct net_device *dev, int phy_id,
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int location, int val)
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{
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}
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static void cvm_oct_get_drvinfo(struct net_device *dev,
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struct ethtool_drvinfo *info)
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{
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strcpy(info->driver, "cavium-ethernet");
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strcpy(info->version, OCTEON_ETHERNET_VERSION);
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strcpy(info->bus_info, "Builtin");
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}
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static int cvm_oct_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
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{
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struct octeon_ethernet *priv = netdev_priv(dev);
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int ret;
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down(&mdio_sem);
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ret = mii_ethtool_gset(&priv->mii_info, cmd);
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up(&mdio_sem);
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return ret;
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}
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static int cvm_oct_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
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{
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struct octeon_ethernet *priv = netdev_priv(dev);
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int ret;
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down(&mdio_sem);
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ret = mii_ethtool_sset(&priv->mii_info, cmd);
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up(&mdio_sem);
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return ret;
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}
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static int cvm_oct_nway_reset(struct net_device *dev)
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{
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struct octeon_ethernet *priv = netdev_priv(dev);
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int ret;
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down(&mdio_sem);
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ret = mii_nway_restart(&priv->mii_info);
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up(&mdio_sem);
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return ret;
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}
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static u32 cvm_oct_get_link(struct net_device *dev)
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{
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struct octeon_ethernet *priv = netdev_priv(dev);
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u32 ret;
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down(&mdio_sem);
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ret = mii_link_ok(&priv->mii_info);
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up(&mdio_sem);
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return ret;
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}
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const struct ethtool_ops cvm_oct_ethtool_ops = {
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.get_drvinfo = cvm_oct_get_drvinfo,
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.get_settings = cvm_oct_get_settings,
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.set_settings = cvm_oct_set_settings,
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.nway_reset = cvm_oct_nway_reset,
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.get_link = cvm_oct_get_link,
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.get_sg = ethtool_op_get_sg,
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.get_tx_csum = ethtool_op_get_tx_csum,
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};
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/**
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* IOCTL support for PHY control
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*
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* @dev: Device to change
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* @rq: the request
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* @cmd: the command
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* Returns Zero on success
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*/
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int cvm_oct_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
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{
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struct octeon_ethernet *priv = netdev_priv(dev);
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struct mii_ioctl_data *data = if_mii(rq);
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unsigned int duplex_chg;
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int ret;
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down(&mdio_sem);
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ret = generic_mii_ioctl(&priv->mii_info, data, cmd, &duplex_chg);
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up(&mdio_sem);
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return ret;
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}
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/**
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* Setup the MDIO device structures
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*
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* @dev: Device to setup
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*
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* Returns Zero on success, negative on failure
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*/
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int cvm_oct_mdio_setup_device(struct net_device *dev)
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{
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struct octeon_ethernet *priv = netdev_priv(dev);
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int phy_id = cvmx_helper_board_get_mii_address(priv->port);
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if (phy_id != -1) {
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priv->mii_info.dev = dev;
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priv->mii_info.phy_id = phy_id;
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priv->mii_info.phy_id_mask = 0xff;
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priv->mii_info.supports_gmii = 1;
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priv->mii_info.reg_num_mask = 0x1f;
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priv->mii_info.mdio_read = cvm_oct_mdio_read;
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priv->mii_info.mdio_write = cvm_oct_mdio_write;
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} else {
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/* Supply dummy MDIO routines so the kernel won't crash
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if the user tries to read them */
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priv->mii_info.mdio_read = cvm_oct_mdio_dummy_read;
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priv->mii_info.mdio_write = cvm_oct_mdio_dummy_write;
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}
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return 0;
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}
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