drivers/staging/benet/be_ethtool.c

   1 /*
   2  * Copyright (C) 2005 - 2008 ServerEngines
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Contact Information:
  11  * linux-drivers@serverengines.com
  12  *
  13  * ServerEngines
  14  * 209 N. Fair Oaks Ave
  15  * Sunnyvale, CA 94085
  16  */
  17 /*
  18  * be_ethtool.c
  19  *
  20  *      This file contains various functions that ethtool can use
  21  *      to talk to the driver and the BE H/W.
  22  */
  23
  24 #include "benet.h"
  25
  26 #include <linux/ethtool.h>
  27
  28 static const char benet_gstrings_stats[][ETH_GSTRING_LEN] = {
  29 /* net_device_stats */
  30         "rx_packets",
  31         "tx_packets",
  32         "rx_bytes",
  33         "tx_bytes",
  34         "rx_errors",
  35         "tx_errors",
  36         "rx_dropped",
  37         "tx_dropped",
  38         "multicast",
  39         "collisions",
  40         "rx_length_errors",
  41         "rx_over_errors",
  42         "rx_crc_errors",
  43         "rx_frame_errors",
  44         "rx_fifo_errors",
  45         "rx_missed_errors",
  46         "tx_aborted_errors",
  47         "tx_carrier_errors",
  48         "tx_fifo_errors",
  49         "tx_heartbeat_errors",
  50         "tx_window_errors",
  51         "rx_compressed",
  52         "tc_compressed",
  53 /* BE driver Stats */
  54         "bes_tx_reqs",
  55         "bes_tx_fails",
  56         "bes_fwd_reqs",
  57         "bes_tx_wrbs",
  58         "bes_interrupts",
  59         "bes_events",
  60         "bes_tx_events",
  61         "bes_rx_events",
  62         "bes_tx_compl",
  63         "bes_rx_compl",
  64         "bes_ethrx_post_fail",
  65         "bes_802_3_dropped_frames",
  66         "bes_802_3_malformed_frames",
  67         "bes_rx_misc_pkts",
  68         "bes_eth_tx_rate",
  69         "bes_eth_rx_rate",
  70         "Num Packets collected",
  71         "Num Times Flushed",
  72 };
  73
  74 #define NET_DEV_STATS_LEN \
  75         (sizeof(struct net_device_stats)/sizeof(unsigned long))
  76
  77 #define BENET_STATS_LEN  ARRAY_SIZE(benet_gstrings_stats)
  78
  79 static void
  80 be_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *drvinfo)
  81 {
  82         struct be_net_object *pnob = netdev_priv(netdev);
  83         struct be_adapter *adapter = pnob->adapter;
  84
  85         strncpy(drvinfo->driver, be_driver_name, 32);
  86         strncpy(drvinfo->version, be_drvr_ver, 32);
  87         strncpy(drvinfo->fw_version, be_fw_ver, 32);
  88         strcpy(drvinfo->bus_info, pci_name(adapter->pdev));
  89         drvinfo->testinfo_len = 0;
  90         drvinfo->regdump_len = 0;
  91         drvinfo->eedump_len = 0;
  92 }
  93
  94 static int
  95 be_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
  96 {
  97         struct be_net_object *pnob = netdev_priv(netdev);
  98         struct be_adapter *adapter = pnob->adapter;
  99
 100         coalesce->rx_max_coalesced_frames = adapter->max_rx_coal;
 101
 102         coalesce->rx_coalesce_usecs = adapter->cur_eqd;
 103         coalesce->rx_coalesce_usecs_high = adapter->max_eqd;
 104         coalesce->rx_coalesce_usecs_low = adapter->min_eqd;
 105
 106         coalesce->tx_coalesce_usecs = adapter->cur_eqd;
 107         coalesce->tx_coalesce_usecs_high = adapter->max_eqd;
 108         coalesce->tx_coalesce_usecs_low = adapter->min_eqd;
 109
 110         coalesce->use_adaptive_rx_coalesce = adapter->enable_aic;
 111         coalesce->use_adaptive_tx_coalesce = adapter->enable_aic;
 112
 113         return 0;
 114 }
 115
 116 /*
 117  * This routine is used to set interrup coalescing delay *as well as*
 118  * the number of pkts to coalesce for LRO.
 119  */
 120 static int
 121 be_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *coalesce)
 122 {
 123         struct be_net_object *pnob = netdev_priv(netdev);
 124         struct be_adapter *adapter = pnob->adapter;
 125         struct be_eq_object *eq_objectp;
 126         u32 max, min, cur;
 127         int status;
 128
 129         adapter->max_rx_coal = coalesce->rx_max_coalesced_frames;
 130         if (adapter->max_rx_coal >= BE_LRO_MAX_PKTS)
 131                 adapter->max_rx_coal = BE_LRO_MAX_PKTS;
 132
 133         if (adapter->enable_aic == 0 &&
 134                 coalesce->use_adaptive_rx_coalesce == 1) {
 135                 /* if AIC is being turned on now, start with an EQD of 0 */
 136                 adapter->cur_eqd = 0;
 137         }
 138         adapter->enable_aic = coalesce->use_adaptive_rx_coalesce;
 139
 140         /* round off to nearest multiple of 8 */
 141         max = (((coalesce->rx_coalesce_usecs_high + 4) >> 3) << 3);
 142         min = (((coalesce->rx_coalesce_usecs_low + 4) >> 3) << 3);
 143         cur = (((coalesce->rx_coalesce_usecs + 4) >> 3) << 3);
 144
 145         if (adapter->enable_aic) {
 146                 /* accept low and high if AIC is enabled */
 147                 if (max > MAX_EQD)
 148                         max = MAX_EQD;
 149                 if (min > max)
 150                         min = max;
 151                 adapter->max_eqd = max;
 152                 adapter->min_eqd = min;
 153                 if (adapter->cur_eqd > max)
 154                         adapter->cur_eqd = max;
 155                 if (adapter->cur_eqd < min)
 156                         adapter->cur_eqd = min;
 157         } else {
 158                 /* accept specified coalesce_usecs only if AIC is disabled */
 159                 if (cur > MAX_EQD)
 160                         cur = MAX_EQD;
 161                 eq_objectp = &pnob->event_q_obj;
 162                 status =
 163                     be_eq_modify_delay(&pnob->fn_obj, 1, &eq_objectp, &cur,
 164                                        NULL, NULL, NULL);
 165                 if (status == BE_SUCCESS)
 166                         adapter->cur_eqd = cur;
 167         }
 168         return 0;
 169 }
 170
 171 static u32 be_get_rx_csum(struct net_device *netdev)
 172 {
 173         struct be_net_object *pnob = netdev_priv(netdev);
 174         struct be_adapter *adapter = pnob->adapter;
 175         return adapter->rx_csum;
 176 }
 177
 178 static int be_set_rx_csum(struct net_device *netdev, uint32_t data)
 179 {
 180         struct be_net_object *pnob = netdev_priv(netdev);
 181         struct be_adapter *adapter = pnob->adapter;
 182
 183         if (data)
 184                 adapter->rx_csum = 1;
 185         else
 186                 adapter->rx_csum = 0;
 187
 188         return 0;
 189 }
 190
 191 static void
 192 be_get_strings(struct net_device *netdev, uint32_t stringset, uint8_t *data)
 193 {
 194         switch (stringset) {
 195         case ETH_SS_STATS:
 196                 memcpy(data, *benet_gstrings_stats,
 197                        sizeof(benet_gstrings_stats));
 198                 break;
 199         }
 200 }
 201
 202 static int be_get_stats_count(struct net_device *netdev)
 203 {
 204         return BENET_STATS_LEN;
 205 }
 206
 207 static void
 208 be_get_ethtool_stats(struct net_device *netdev,
 209                      struct ethtool_stats *stats, uint64_t *data)
 210 {
 211         struct be_net_object *pnob = netdev_priv(netdev);
 212         struct be_adapter *adapter = pnob->adapter;
 213         int i;
 214
 215         benet_get_stats(netdev);
 216
 217         for (i = 0; i <= NET_DEV_STATS_LEN; i++)
 218                 data[i] = ((unsigned long *)&adapter->benet_stats)[i];
 219
 220         data[i] = adapter->be_stat.bes_tx_reqs;
 221         data[i++] = adapter->be_stat.bes_tx_fails;
 222         data[i++] = adapter->be_stat.bes_fwd_reqs;
 223         data[i++] = adapter->be_stat.bes_tx_wrbs;
 224
 225         data[i++] = adapter->be_stat.bes_ints;
 226         data[i++] = adapter->be_stat.bes_events;
 227         data[i++] = adapter->be_stat.bes_tx_events;
 228         data[i++] = adapter->be_stat.bes_rx_events;
 229         data[i++] = adapter->be_stat.bes_tx_compl;
 230         data[i++] = adapter->be_stat.bes_rx_compl;
 231         data[i++] = adapter->be_stat.bes_ethrx_post_fail;
 232         data[i++] = adapter->be_stat.bes_802_3_dropped_frames;
 233         data[i++] = adapter->be_stat.bes_802_3_malformed_frames;
 234         data[i++] = adapter->be_stat.bes_rx_misc_pkts;
 235         data[i++] = adapter->be_stat.bes_eth_tx_rate;
 236         data[i++] = adapter->be_stat.bes_eth_rx_rate;
 237         data[i++] = adapter->be_stat.bes_rx_coal;
 238         data[i++] = adapter->be_stat.bes_rx_flush;
 239
 240 }
 241
 242 static int be_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 243 {
 244         ecmd->speed = SPEED_10000;
 245         ecmd->duplex = DUPLEX_FULL;
 246         ecmd->autoneg = AUTONEG_DISABLE;
 247         return 0;
 248 }
 249
 250 /* Get the Ring parameters from the pnob */
 251 static void
 252 be_get_ringparam(struct net_device *netdev, struct ethtool_ringparam *ring)
 253 {
 254         struct be_net_object *pnob = netdev_priv(netdev);
 255
 256         /* Pre Set Maxims */
 257         ring->rx_max_pending = pnob->rx_q_len;
 258         ring->rx_mini_max_pending = ring->rx_mini_max_pending;
 259         ring->rx_jumbo_max_pending = ring->rx_jumbo_max_pending;
 260         ring->tx_max_pending = pnob->tx_q_len;
 261
 262         /* Current hardware Settings                */
 263         ring->rx_pending = atomic_read(&pnob->rx_q_posted);
 264         ring->rx_mini_pending = ring->rx_mini_pending;
 265         ring->rx_jumbo_pending = ring->rx_jumbo_pending;
 266         ring->tx_pending = atomic_read(&pnob->tx_q_used);
 267
 268 }
 269
 270 static void
 271 be_get_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *ecmd)
 272 {
 273         struct be_net_object *pnob = netdev_priv(netdev);
 274         bool rxfc, txfc;
 275         int status;
 276
 277         status = be_eth_get_flow_control(&pnob->fn_obj, &txfc, &rxfc);
 278         if (status != BE_SUCCESS) {
 279                 dev_info(&netdev->dev, "Unable to get pause frame settings\n");
 280                 /* return defaults */
 281                 ecmd->rx_pause = 1;
 282                 ecmd->tx_pause = 0;
 283                 ecmd->autoneg = AUTONEG_ENABLE;
 284                 return;
 285         }
 286
 287         if (txfc == true)
 288                 ecmd->tx_pause = 1;
 289         else
 290                 ecmd->tx_pause = 0;
 291
 292         if (rxfc == true)
 293                 ecmd->rx_pause = 1;
 294         else
 295                 ecmd->rx_pause = 0;
 296
 297         ecmd->autoneg = AUTONEG_ENABLE;
 298 }
 299
 300 static int
 301 be_set_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *ecmd)
 302 {
 303         struct be_net_object *pnob = netdev_priv(netdev);
 304         bool txfc, rxfc;
 305         int status;
 306
 307         if (ecmd->autoneg != AUTONEG_ENABLE)
 308                 return -EINVAL;
 309
 310         if (ecmd->tx_pause)
 311                 txfc = true;
 312         else
 313                 txfc = false;
 314
 315         if (ecmd->rx_pause)
 316                 rxfc = true;
 317         else
 318                 rxfc = false;
 319
 320         status = be_eth_set_flow_control(&pnob->fn_obj, txfc, rxfc);
 321         if (status != BE_SUCCESS) {
 322                 dev_info(&netdev->dev, "Unable to set pause frame settings\n");
 323                 return -1;
 324         }
 325         return 0;
 326 }
 327
 328 struct ethtool_ops be_ethtool_ops = {
 329         .get_settings = be_get_settings,
 330         .get_drvinfo = be_get_drvinfo,
 331         .get_link = ethtool_op_get_link,
 332         .get_coalesce = be_get_coalesce,
 333         .set_coalesce = be_set_coalesce,
 334         .get_ringparam = be_get_ringparam,
 335         .get_pauseparam = be_get_pauseparam,
 336         .set_pauseparam = be_set_pauseparam,
 337         .get_rx_csum = be_get_rx_csum,
 338         .set_rx_csum = be_set_rx_csum,
 339         .get_tx_csum = ethtool_op_get_tx_csum,
 340         .set_tx_csum = ethtool_op_set_tx_csum,
 341         .get_sg = ethtool_op_get_sg,
 342         .set_sg = ethtool_op_set_sg,
 343         .get_tso = ethtool_op_get_tso,
 344         .set_tso = ethtool_op_set_tso,
 345         .get_strings = be_get_strings,
 346         .get_stats_count = be_get_stats_count,
 347         .get_ethtool_stats = be_get_ethtool_stats,
 348 };