drivers/net/ethernet/altera/altera_tse_ethtool.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /* Ethtool support for Altera Triple-Speed Ethernet MAC driver
   3  * Copyright (C) 2008-2014 Altera Corporation. All rights reserved
   4  *
   5  * Contributors:
   6  *   Dalon Westergreen
   7  *   Thomas Chou
   8  *   Ian Abbott
   9  *   Yuriy Kozlov
  10  *   Tobias Klauser
  11  *   Andriy Smolskyy
  12  *   Roman Bulgakov
  13  *   Dmytro Mytarchuk
  14  *
  15  * Original driver contributed by SLS.
  16  * Major updates contributed by GlobalLogic
  17  */
  18
  19 #include <linux/ethtool.h>
  20 #include <linux/kernel.h>
  21 #include <linux/netdevice.h>
  22 #include <linux/phy.h>
  23
  24 #include "altera_tse.h"
  25
  26 #define TSE_STATS_LEN   31
  27 #define TSE_NUM_REGS    128
  28
  29 static char const stat_gstrings[][ETH_GSTRING_LEN] = {
  30         "tx_packets",
  31         "rx_packets",
  32         "rx_crc_errors",
  33         "rx_align_errors",
  34         "tx_bytes",
  35         "rx_bytes",
  36         "tx_pause",
  37         "rx_pause",
  38         "rx_errors",
  39         "tx_errors",
  40         "rx_unicast",
  41         "rx_multicast",
  42         "rx_broadcast",
  43         "tx_discards",
  44         "tx_unicast",
  45         "tx_multicast",
  46         "tx_broadcast",
  47         "ether_drops",
  48         "rx_total_bytes",
  49         "rx_total_packets",
  50         "rx_undersize",
  51         "rx_oversize",
  52         "rx_64_bytes",
  53         "rx_65_127_bytes",
  54         "rx_128_255_bytes",
  55         "rx_256_511_bytes",
  56         "rx_512_1023_bytes",
  57         "rx_1024_1518_bytes",
  58         "rx_gte_1519_bytes",
  59         "rx_jabbers",
  60         "rx_runts",
  61 };
  62
  63 static void tse_get_drvinfo(struct net_device *dev,
  64                             struct ethtool_drvinfo *info)
  65 {
  66         struct altera_tse_private *priv = netdev_priv(dev);
  67         u32 rev = ioread32(&priv->mac_dev->megacore_revision);
  68
  69         strcpy(info->driver, "altera_tse");
  70         snprintf(info->fw_version, ETHTOOL_FWVERS_LEN, "v%d.%d",
  71                  rev & 0xFFFF, (rev & 0xFFFF0000) >> 16);
  72         sprintf(info->bus_info, "platform");
  73 }
  74
  75 /* Fill in a buffer with the strings which correspond to the
  76  * stats
  77  */
  78 static void tse_gstrings(struct net_device *dev, u32 stringset, u8 *buf)
  79 {
  80         memcpy(buf, stat_gstrings, TSE_STATS_LEN * ETH_GSTRING_LEN);
  81 }
  82
  83 static void tse_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
  84                            u64 *buf)
  85 {
  86         struct altera_tse_private *priv = netdev_priv(dev);
  87         u64 ext;
  88
  89         buf[0] = csrrd32(priv->mac_dev,
  90                          tse_csroffs(frames_transmitted_ok));
  91         buf[1] = csrrd32(priv->mac_dev,
  92                          tse_csroffs(frames_received_ok));
  93         buf[2] = csrrd32(priv->mac_dev,
  94                          tse_csroffs(frames_check_sequence_errors));
  95         buf[3] = csrrd32(priv->mac_dev,
  96                          tse_csroffs(alignment_errors));
  97
  98         /* Extended aOctetsTransmittedOK counter */
  99         ext = (u64) csrrd32(priv->mac_dev,
 100                             tse_csroffs(msb_octets_transmitted_ok)) << 32;
 101
 102         ext |= csrrd32(priv->mac_dev,
 103                        tse_csroffs(octets_transmitted_ok));
 104         buf[4] = ext;
 105
 106         /* Extended aOctetsReceivedOK counter */
 107         ext = (u64) csrrd32(priv->mac_dev,
 108                             tse_csroffs(msb_octets_received_ok)) << 32;
 109
 110         ext |= csrrd32(priv->mac_dev,
 111                        tse_csroffs(octets_received_ok));
 112         buf[5] = ext;
 113
 114         buf[6] = csrrd32(priv->mac_dev,
 115                          tse_csroffs(tx_pause_mac_ctrl_frames));
 116         buf[7] = csrrd32(priv->mac_dev,
 117                          tse_csroffs(rx_pause_mac_ctrl_frames));
 118         buf[8] = csrrd32(priv->mac_dev,
 119                          tse_csroffs(if_in_errors));
 120         buf[9] = csrrd32(priv->mac_dev,
 121                          tse_csroffs(if_out_errors));
 122         buf[10] = csrrd32(priv->mac_dev,
 123                           tse_csroffs(if_in_ucast_pkts));
 124         buf[11] = csrrd32(priv->mac_dev,
 125                           tse_csroffs(if_in_multicast_pkts));
 126         buf[12] = csrrd32(priv->mac_dev,
 127                           tse_csroffs(if_in_broadcast_pkts));
 128         buf[13] = csrrd32(priv->mac_dev,
 129                           tse_csroffs(if_out_discards));
 130         buf[14] = csrrd32(priv->mac_dev,
 131                           tse_csroffs(if_out_ucast_pkts));
 132         buf[15] = csrrd32(priv->mac_dev,
 133                           tse_csroffs(if_out_multicast_pkts));
 134         buf[16] = csrrd32(priv->mac_dev,
 135                           tse_csroffs(if_out_broadcast_pkts));
 136         buf[17] = csrrd32(priv->mac_dev,
 137                           tse_csroffs(ether_stats_drop_events));
 138
 139         /* Extended etherStatsOctets counter */
 140         ext = (u64) csrrd32(priv->mac_dev,
 141                             tse_csroffs(msb_ether_stats_octets)) << 32;
 142         ext |= csrrd32(priv->mac_dev,
 143                        tse_csroffs(ether_stats_octets));
 144         buf[18] = ext;
 145
 146         buf[19] = csrrd32(priv->mac_dev,
 147                           tse_csroffs(ether_stats_pkts));
 148         buf[20] = csrrd32(priv->mac_dev,
 149                           tse_csroffs(ether_stats_undersize_pkts));
 150         buf[21] = csrrd32(priv->mac_dev,
 151                           tse_csroffs(ether_stats_oversize_pkts));
 152         buf[22] = csrrd32(priv->mac_dev,
 153                           tse_csroffs(ether_stats_pkts_64_octets));
 154         buf[23] = csrrd32(priv->mac_dev,
 155                           tse_csroffs(ether_stats_pkts_65to127_octets));
 156         buf[24] = csrrd32(priv->mac_dev,
 157                           tse_csroffs(ether_stats_pkts_128to255_octets));
 158         buf[25] = csrrd32(priv->mac_dev,
 159                           tse_csroffs(ether_stats_pkts_256to511_octets));
 160         buf[26] = csrrd32(priv->mac_dev,
 161                           tse_csroffs(ether_stats_pkts_512to1023_octets));
 162         buf[27] = csrrd32(priv->mac_dev,
 163                           tse_csroffs(ether_stats_pkts_1024to1518_octets));
 164         buf[28] = csrrd32(priv->mac_dev,
 165                           tse_csroffs(ether_stats_pkts_1519tox_octets));
 166         buf[29] = csrrd32(priv->mac_dev,
 167                           tse_csroffs(ether_stats_jabbers));
 168         buf[30] = csrrd32(priv->mac_dev,
 169                           tse_csroffs(ether_stats_fragments));
 170 }
 171
 172 static int tse_sset_count(struct net_device *dev, int sset)
 173 {
 174         switch (sset) {
 175         case ETH_SS_STATS:
 176                 return TSE_STATS_LEN;
 177         default:
 178                 return -EOPNOTSUPP;
 179         }
 180 }
 181
 182 static u32 tse_get_msglevel(struct net_device *dev)
 183 {
 184         struct altera_tse_private *priv = netdev_priv(dev);
 185         return priv->msg_enable;
 186 }
 187
 188 static void tse_set_msglevel(struct net_device *dev, uint32_t data)
 189 {
 190         struct altera_tse_private *priv = netdev_priv(dev);
 191         priv->msg_enable = data;
 192 }
 193
 194 static int tse_reglen(struct net_device *dev)
 195 {
 196         return TSE_NUM_REGS * sizeof(u32);
 197 }
 198
 199 static void tse_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 200                          void *regbuf)
 201 {
 202         int i;
 203         struct altera_tse_private *priv = netdev_priv(dev);
 204         u32 *buf = regbuf;
 205
 206         /* Set version to a known value, so ethtool knows
 207          * how to do any special formatting of this data.
 208          * This version number will need to change if and
 209          * when this register table is changed.
 210          *
 211          * version[31:0] = 1: Dump the first 128 TSE Registers
 212          *      Upper bits are all 0 by default
 213          *
 214          * Upper 16-bits will indicate feature presence for
 215          * Ethtool register decoding in future version.
 216          */
 217
 218         regs->version = 1;
 219
 220         for (i = 0; i < TSE_NUM_REGS; i++)
 221                 buf[i] = csrrd32(priv->mac_dev, i * 4);
 222 }
 223
 224 static const struct ethtool_ops tse_ethtool_ops = {
 225         .get_drvinfo = tse_get_drvinfo,
 226         .get_regs_len = tse_reglen,
 227         .get_regs = tse_get_regs,
 228         .get_link = ethtool_op_get_link,
 229         .get_strings = tse_gstrings,
 230         .get_sset_count = tse_sset_count,
 231         .get_ethtool_stats = tse_fill_stats,
 232         .get_msglevel = tse_get_msglevel,
 233         .set_msglevel = tse_set_msglevel,
 234         .get_link_ksettings = phy_ethtool_get_link_ksettings,
 235         .set_link_ksettings = phy_ethtool_set_link_ksettings,
 236 };
 237
 238 void altera_tse_set_ethtool_ops(struct net_device *netdev)
 239 {
 240         netdev->ethtool_ops = &tse_ethtool_ops;
 241 }