drivers/net/ethernet/altera/altera_tse_ethtool.c

   1 /* Ethtool support for Altera Triple-Speed Ethernet MAC driver
   2  * Copyright (C) 2008-2014 Altera Corporation. All rights reserved
   3  *
   4  * Contributors:
   5  *   Dalon Westergreen
   6  *   Thomas Chou
   7  *   Ian Abbott
   8  *   Yuriy Kozlov
   9  *   Tobias Klauser
  10  *   Andriy Smolskyy
  11  *   Roman Bulgakov
  12  *   Dmytro Mytarchuk
  13  *
  14  * Original driver contributed by SLS.
  15  * Major updates contributed by GlobalLogic
  16  *
  17  * This program is free software; you can redistribute it and/or modify it
  18  * under the terms and conditions of the GNU General Public License,
  19  * version 2, as published by the Free Software Foundation.
  20  *
  21  * This program is distributed in the hope it will be useful, but WITHOUT
  22  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  23  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  24  * more details.
  25  *
  26  * You should have received a copy of the GNU General Public License along with
  27  * this program.  If not, see <http://www.gnu.org/licenses/>.
  28  */
  29
  30 #include <linux/ethtool.h>
  31 #include <linux/kernel.h>
  32 #include <linux/netdevice.h>
  33 #include <linux/phy.h>
  34
  35 #include "altera_tse.h"
  36
  37 #define TSE_STATS_LEN   31
  38 #define TSE_NUM_REGS    128
  39
  40 static char const stat_gstrings[][ETH_GSTRING_LEN] = {
  41         "tx_packets",
  42         "rx_packets",
  43         "rx_crc_errors",
  44         "rx_align_errors",
  45         "tx_bytes",
  46         "rx_bytes",
  47         "tx_pause",
  48         "rx_pause",
  49         "rx_errors",
  50         "tx_errors",
  51         "rx_unicast",
  52         "rx_multicast",
  53         "rx_broadcast",
  54         "tx_discards",
  55         "tx_unicast",
  56         "tx_multicast",
  57         "tx_broadcast",
  58         "ether_drops",
  59         "rx_total_bytes",
  60         "rx_total_packets",
  61         "rx_undersize",
  62         "rx_oversize",
  63         "rx_64_bytes",
  64         "rx_65_127_bytes",
  65         "rx_128_255_bytes",
  66         "rx_256_511_bytes",
  67         "rx_512_1023_bytes",
  68         "rx_1024_1518_bytes",
  69         "rx_gte_1519_bytes",
  70         "rx_jabbers",
  71         "rx_runts",
  72 };
  73
  74 static void tse_get_drvinfo(struct net_device *dev,
  75                             struct ethtool_drvinfo *info)
  76 {
  77         struct altera_tse_private *priv = netdev_priv(dev);
  78         u32 rev = ioread32(&priv->mac_dev->megacore_revision);
  79
  80         strcpy(info->driver, "altera_tse");
  81         strcpy(info->version, "v8.0");
  82         snprintf(info->fw_version, ETHTOOL_FWVERS_LEN, "v%d.%d",
  83                  rev & 0xFFFF, (rev & 0xFFFF0000) >> 16);
  84         sprintf(info->bus_info, "platform");
  85 }
  86
  87 /* Fill in a buffer with the strings which correspond to the
  88  * stats
  89  */
  90 static void tse_gstrings(struct net_device *dev, u32 stringset, u8 *buf)
  91 {
  92         memcpy(buf, stat_gstrings, TSE_STATS_LEN * ETH_GSTRING_LEN);
  93 }
  94
  95 static void tse_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
  96                            u64 *buf)
  97 {
  98         struct altera_tse_private *priv = netdev_priv(dev);
  99         u64 ext;
 100
 101         buf[0] = csrrd32(priv->mac_dev,
 102                          tse_csroffs(frames_transmitted_ok));
 103         buf[1] = csrrd32(priv->mac_dev,
 104                          tse_csroffs(frames_received_ok));
 105         buf[2] = csrrd32(priv->mac_dev,
 106                          tse_csroffs(frames_check_sequence_errors));
 107         buf[3] = csrrd32(priv->mac_dev,
 108                          tse_csroffs(alignment_errors));
 109
 110         /* Extended aOctetsTransmittedOK counter */
 111         ext = (u64) csrrd32(priv->mac_dev,
 112                             tse_csroffs(msb_octets_transmitted_ok)) << 32;
 113
 114         ext |= csrrd32(priv->mac_dev,
 115                        tse_csroffs(octets_transmitted_ok));
 116         buf[4] = ext;
 117
 118         /* Extended aOctetsReceivedOK counter */
 119         ext = (u64) csrrd32(priv->mac_dev,
 120                             tse_csroffs(msb_octets_received_ok)) << 32;
 121
 122         ext |= csrrd32(priv->mac_dev,
 123                        tse_csroffs(octets_received_ok));
 124         buf[5] = ext;
 125
 126         buf[6] = csrrd32(priv->mac_dev,
 127                          tse_csroffs(tx_pause_mac_ctrl_frames));
 128         buf[7] = csrrd32(priv->mac_dev,
 129                          tse_csroffs(rx_pause_mac_ctrl_frames));
 130         buf[8] = csrrd32(priv->mac_dev,
 131                          tse_csroffs(if_in_errors));
 132         buf[9] = csrrd32(priv->mac_dev,
 133                          tse_csroffs(if_out_errors));
 134         buf[10] = csrrd32(priv->mac_dev,
 135                           tse_csroffs(if_in_ucast_pkts));
 136         buf[11] = csrrd32(priv->mac_dev,
 137                           tse_csroffs(if_in_multicast_pkts));
 138         buf[12] = csrrd32(priv->mac_dev,
 139                           tse_csroffs(if_in_broadcast_pkts));
 140         buf[13] = csrrd32(priv->mac_dev,
 141                           tse_csroffs(if_out_discards));
 142         buf[14] = csrrd32(priv->mac_dev,
 143                           tse_csroffs(if_out_ucast_pkts));
 144         buf[15] = csrrd32(priv->mac_dev,
 145                           tse_csroffs(if_out_multicast_pkts));
 146         buf[16] = csrrd32(priv->mac_dev,
 147                           tse_csroffs(if_out_broadcast_pkts));
 148         buf[17] = csrrd32(priv->mac_dev,
 149                           tse_csroffs(ether_stats_drop_events));
 150
 151         /* Extended etherStatsOctets counter */
 152         ext = (u64) csrrd32(priv->mac_dev,
 153                             tse_csroffs(msb_ether_stats_octets)) << 32;
 154         ext |= csrrd32(priv->mac_dev,
 155                        tse_csroffs(ether_stats_octets));
 156         buf[18] = ext;
 157
 158         buf[19] = csrrd32(priv->mac_dev,
 159                           tse_csroffs(ether_stats_pkts));
 160         buf[20] = csrrd32(priv->mac_dev,
 161                           tse_csroffs(ether_stats_undersize_pkts));
 162         buf[21] = csrrd32(priv->mac_dev,
 163                           tse_csroffs(ether_stats_oversize_pkts));
 164         buf[22] = csrrd32(priv->mac_dev,
 165                           tse_csroffs(ether_stats_pkts_64_octets));
 166         buf[23] = csrrd32(priv->mac_dev,
 167                           tse_csroffs(ether_stats_pkts_65to127_octets));
 168         buf[24] = csrrd32(priv->mac_dev,
 169                           tse_csroffs(ether_stats_pkts_128to255_octets));
 170         buf[25] = csrrd32(priv->mac_dev,
 171                           tse_csroffs(ether_stats_pkts_256to511_octets));
 172         buf[26] = csrrd32(priv->mac_dev,
 173                           tse_csroffs(ether_stats_pkts_512to1023_octets));
 174         buf[27] = csrrd32(priv->mac_dev,
 175                           tse_csroffs(ether_stats_pkts_1024to1518_octets));
 176         buf[28] = csrrd32(priv->mac_dev,
 177                           tse_csroffs(ether_stats_pkts_1519tox_octets));
 178         buf[29] = csrrd32(priv->mac_dev,
 179                           tse_csroffs(ether_stats_jabbers));
 180         buf[30] = csrrd32(priv->mac_dev,
 181                           tse_csroffs(ether_stats_fragments));
 182 }
 183
 184 static int tse_sset_count(struct net_device *dev, int sset)
 185 {
 186         switch (sset) {
 187         case ETH_SS_STATS:
 188                 return TSE_STATS_LEN;
 189         default:
 190                 return -EOPNOTSUPP;
 191         }
 192 }
 193
 194 static u32 tse_get_msglevel(struct net_device *dev)
 195 {
 196         struct altera_tse_private *priv = netdev_priv(dev);
 197         return priv->msg_enable;
 198 }
 199
 200 static void tse_set_msglevel(struct net_device *dev, uint32_t data)
 201 {
 202         struct altera_tse_private *priv = netdev_priv(dev);
 203         priv->msg_enable = data;
 204 }
 205
 206 static int tse_reglen(struct net_device *dev)
 207 {
 208         return TSE_NUM_REGS * sizeof(u32);
 209 }
 210
 211 static void tse_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 212                          void *regbuf)
 213 {
 214         int i;
 215         struct altera_tse_private *priv = netdev_priv(dev);
 216         u32 *buf = regbuf;
 217
 218         /* Set version to a known value, so ethtool knows
 219          * how to do any special formatting of this data.
 220          * This version number will need to change if and
 221          * when this register table is changed.
 222          *
 223          * version[31:0] = 1: Dump the first 128 TSE Registers
 224          *      Upper bits are all 0 by default
 225          *
 226          * Upper 16-bits will indicate feature presence for
 227          * Ethtool register decoding in future version.
 228          */
 229
 230         regs->version = 1;
 231
 232         for (i = 0; i < TSE_NUM_REGS; i++)
 233                 buf[i] = csrrd32(priv->mac_dev, i * 4);
 234 }
 235
 236 static int tse_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 237 {
 238         struct altera_tse_private *priv = netdev_priv(dev);
 239         struct phy_device *phydev = priv->phydev;
 240
 241         if (phydev == NULL)
 242                 return -ENODEV;
 243
 244         return phy_ethtool_gset(phydev, cmd);
 245 }
 246
 247 static int tse_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 248 {
 249         struct altera_tse_private *priv = netdev_priv(dev);
 250         struct phy_device *phydev = priv->phydev;
 251
 252         if (phydev == NULL)
 253                 return -ENODEV;
 254
 255         return phy_ethtool_sset(phydev, cmd);
 256 }
 257
 258 static const struct ethtool_ops tse_ethtool_ops = {
 259         .get_drvinfo = tse_get_drvinfo,
 260         .get_regs_len = tse_reglen,
 261         .get_regs = tse_get_regs,
 262         .get_link = ethtool_op_get_link,
 263         .get_settings = tse_get_settings,
 264         .set_settings = tse_set_settings,
 265         .get_strings = tse_gstrings,
 266         .get_sset_count = tse_sset_count,
 267         .get_ethtool_stats = tse_fill_stats,
 268         .get_msglevel = tse_get_msglevel,
 269         .set_msglevel = tse_set_msglevel,
 270 };
 271
 272 void altera_tse_set_ethtool_ops(struct net_device *netdev)
 273 {
 274         netdev->ethtool_ops = &tse_ethtool_ops;
 275 }