1 /**********************************************************************
2 * Author: Cavium Networks
4 * Contact: support@caviumnetworks.com
5 * This file is part of the OCTEON SDK
7 * Copyright (c) 2003-2007 Cavium Networks
9 * This file is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License, Version 2, as
11 * published by the Free Software Foundation.
13 * This file is distributed in the hope that it will be useful, but
14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
16 * NONINFRINGEMENT. See the GNU General Public License for more
19 * You should have received a copy of the GNU General Public License
20 * along with this file; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 * or visit http://www.gnu.org/licenses/.
24 * This file may also be available under a different license from Cavium.
25 * Contact Cavium Networks for more information
26 **********************************************************************/
27 #include <linux/kernel.h>
28 #include <linux/ethtool.h>
29 #include <linux/mii.h>
32 #include <asm/octeon/octeon.h>
34 #include "ethernet-defines.h"
35 #include "octeon-ethernet.h"
36 #include "ethernet-mdio.h"
38 #include "cvmx-helper-board.h"
40 #include "cvmx-smix-defs.h"
42 DECLARE_MUTEX(mdio_sem);
45 * Perform an MII read. Called by the generic MII routines
47 * @dev: Device to perform read for
48 * @phy_id: The MII phy id
49 * @location: Register location to read
50 * Returns Result from the read or zero on failure
52 static int cvm_oct_mdio_read(struct net_device *dev, int phy_id, int location)
54 union cvmx_smix_cmd smi_cmd;
55 union cvmx_smix_rd_dat smi_rd;
59 smi_cmd.s.phy_adr = phy_id;
60 smi_cmd.s.reg_adr = location;
61 cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
66 smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(0));
67 } while (smi_rd.s.pending);
75 static int cvm_oct_mdio_dummy_read(struct net_device *dev, int phy_id,
82 * Perform an MII write. Called by the generic MII routines
84 * @dev: Device to perform write for
85 * @phy_id: The MII phy id
86 * @location: Register location to write
87 * @val: Value to write
89 static void cvm_oct_mdio_write(struct net_device *dev, int phy_id, int location,
92 union cvmx_smix_cmd smi_cmd;
93 union cvmx_smix_wr_dat smi_wr;
97 cvmx_write_csr(CVMX_SMIX_WR_DAT(0), smi_wr.u64);
100 smi_cmd.s.phy_op = 0;
101 smi_cmd.s.phy_adr = phy_id;
102 smi_cmd.s.reg_adr = location;
103 cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
108 smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(0));
109 } while (smi_wr.s.pending);
112 static void cvm_oct_mdio_dummy_write(struct net_device *dev, int phy_id,
113 int location, int val)
117 static void cvm_oct_get_drvinfo(struct net_device *dev,
118 struct ethtool_drvinfo *info)
120 strcpy(info->driver, "cavium-ethernet");
121 strcpy(info->version, OCTEON_ETHERNET_VERSION);
122 strcpy(info->bus_info, "Builtin");
125 static int cvm_oct_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
127 struct octeon_ethernet *priv = netdev_priv(dev);
131 ret = mii_ethtool_gset(&priv->mii_info, cmd);
137 static int cvm_oct_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
139 struct octeon_ethernet *priv = netdev_priv(dev);
143 ret = mii_ethtool_sset(&priv->mii_info, cmd);
149 static int cvm_oct_nway_reset(struct net_device *dev)
151 struct octeon_ethernet *priv = netdev_priv(dev);
155 ret = mii_nway_restart(&priv->mii_info);
161 static u32 cvm_oct_get_link(struct net_device *dev)
163 struct octeon_ethernet *priv = netdev_priv(dev);
167 ret = mii_link_ok(&priv->mii_info);
173 struct ethtool_ops cvm_oct_ethtool_ops = {
174 .get_drvinfo = cvm_oct_get_drvinfo,
175 .get_settings = cvm_oct_get_settings,
176 .set_settings = cvm_oct_set_settings,
177 .nway_reset = cvm_oct_nway_reset,
178 .get_link = cvm_oct_get_link,
179 .get_sg = ethtool_op_get_sg,
180 .get_tx_csum = ethtool_op_get_tx_csum,
184 * IOCTL support for PHY control
186 * @dev: Device to change
189 * Returns Zero on success
191 int cvm_oct_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
193 struct octeon_ethernet *priv = netdev_priv(dev);
194 struct mii_ioctl_data *data = if_mii(rq);
195 unsigned int duplex_chg;
199 ret = generic_mii_ioctl(&priv->mii_info, data, cmd, &duplex_chg);
206 * Setup the MDIO device structures
208 * @dev: Device to setup
210 * Returns Zero on success, negative on failure
212 int cvm_oct_mdio_setup_device(struct net_device *dev)
214 struct octeon_ethernet *priv = netdev_priv(dev);
215 int phy_id = cvmx_helper_board_get_mii_address(priv->port);
217 priv->mii_info.dev = dev;
218 priv->mii_info.phy_id = phy_id;
219 priv->mii_info.phy_id_mask = 0xff;
220 priv->mii_info.supports_gmii = 1;
221 priv->mii_info.reg_num_mask = 0x1f;
222 priv->mii_info.mdio_read = cvm_oct_mdio_read;
223 priv->mii_info.mdio_write = cvm_oct_mdio_write;
225 /* Supply dummy MDIO routines so the kernel won't crash
226 if the user tries to read them */
227 priv->mii_info.mdio_read = cvm_oct_mdio_dummy_read;
228 priv->mii_info.mdio_write = cvm_oct_mdio_dummy_write;