drivers/net/ethernet/freescale/ucc_geth_ethtool.c

   1 /*
   2  * Copyright (c) 2007 Freescale Semiconductor, Inc. All rights reserved.
   3  *
   4  * Description: QE UCC Gigabit Ethernet Ethtool API Set
   5  *
   6  * Author: Li Yang <leoli@freescale.com>
   7  *
   8  * Limitation:
   9  * Can only get/set settings of the first queue.
  10  * Need to re-open the interface manually after changing some parameters.
  11  *
  12  * This program is free software; you can redistribute  it and/or modify it
  13  * under  the terms of  the GNU General  Public License as published by the
  14  * Free Software Foundation;  either version 2 of the  License, or (at your
  15  * option) any later version.
  16  */
  17
  18 #include <linux/kernel.h>
  19 #include <linux/errno.h>
  20 #include <linux/stddef.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/netdevice.h>
  23 #include <linux/etherdevice.h>
  24 #include <linux/skbuff.h>
  25 #include <linux/spinlock.h>
  26 #include <linux/mm.h>
  27 #include <linux/delay.h>
  28 #include <linux/dma-mapping.h>
  29 #include <linux/ethtool.h>
  30 #include <linux/mii.h>
  31 #include <linux/phy.h>
  32
  33 #include <asm/io.h>
  34 #include <asm/irq.h>
  35 #include <asm/uaccess.h>
  36 #include <asm/types.h>
  37
  38 #include "ucc_geth.h"
  39
  40 static const char hw_stat_gstrings[][ETH_GSTRING_LEN] = {
  41         "tx-64-frames",
  42         "tx-65-127-frames",
  43         "tx-128-255-frames",
  44         "rx-64-frames",
  45         "rx-65-127-frames",
  46         "rx-128-255-frames",
  47         "tx-bytes-ok",
  48         "tx-pause-frames",
  49         "tx-multicast-frames",
  50         "tx-broadcast-frames",
  51         "rx-frames",
  52         "rx-bytes-ok",
  53         "rx-bytes-all",
  54         "rx-multicast-frames",
  55         "rx-broadcast-frames",
  56         "stats-counter-carry",
  57         "stats-counter-mask",
  58         "rx-dropped-frames",
  59 };
  60
  61 static const char tx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
  62         "tx-single-collision",
  63         "tx-multiple-collision",
  64         "tx-late-collsion",
  65         "tx-aborted-frames",
  66         "tx-lost-frames",
  67         "tx-carrier-sense-errors",
  68         "tx-frames-ok",
  69         "tx-excessive-differ-frames",
  70         "tx-256-511-frames",
  71         "tx-512-1023-frames",
  72         "tx-1024-1518-frames",
  73         "tx-jumbo-frames",
  74 };
  75
  76 static const char rx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
  77         "rx-crc-errors",
  78         "rx-alignment-errors",
  79         "rx-in-range-length-errors",
  80         "rx-out-of-range-length-errors",
  81         "rx-too-long-frames",
  82         "rx-runt",
  83         "rx-very-long-event",
  84         "rx-symbol-errors",
  85         "rx-busy-drop-frames",
  86         "reserved",
  87         "reserved",
  88         "rx-mismatch-drop-frames",
  89         "rx-small-than-64",
  90         "rx-256-511-frames",
  91         "rx-512-1023-frames",
  92         "rx-1024-1518-frames",
  93         "rx-jumbo-frames",
  94         "rx-mac-error-loss",
  95         "rx-pause-frames",
  96         "reserved",
  97         "rx-vlan-removed",
  98         "rx-vlan-replaced",
  99         "rx-vlan-inserted",
 100         "rx-ip-checksum-errors",
 101 };
 102
 103 #define UEC_HW_STATS_LEN ARRAY_SIZE(hw_stat_gstrings)
 104 #define UEC_TX_FW_STATS_LEN ARRAY_SIZE(tx_fw_stat_gstrings)
 105 #define UEC_RX_FW_STATS_LEN ARRAY_SIZE(rx_fw_stat_gstrings)
 106
 107 static int
 108 uec_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 109 {
 110         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 111         struct phy_device *phydev = ugeth->phydev;
 112         struct ucc_geth_info *ug_info = ugeth->ug_info;
 113
 114         if (!phydev)
 115                 return -ENODEV;
 116
 117         ecmd->maxtxpkt = 1;
 118         ecmd->maxrxpkt = ug_info->interruptcoalescingmaxvalue[0];
 119
 120         return phy_ethtool_gset(phydev, ecmd);
 121 }
 122
 123 static int
 124 uec_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 125 {
 126         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 127         struct phy_device *phydev = ugeth->phydev;
 128
 129         if (!phydev)
 130                 return -ENODEV;
 131
 132         return phy_ethtool_sset(phydev, ecmd);
 133 }
 134
 135 static void
 136 uec_get_pauseparam(struct net_device *netdev,
 137                      struct ethtool_pauseparam *pause)
 138 {
 139         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 140
 141         pause->autoneg = ugeth->phydev->autoneg;
 142
 143         if (ugeth->ug_info->receiveFlowControl)
 144                 pause->rx_pause = 1;
 145         if (ugeth->ug_info->transmitFlowControl)
 146                 pause->tx_pause = 1;
 147 }
 148
 149 static int
 150 uec_set_pauseparam(struct net_device *netdev,
 151                      struct ethtool_pauseparam *pause)
 152 {
 153         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 154         int ret = 0;
 155
 156         ugeth->ug_info->receiveFlowControl = pause->rx_pause;
 157         ugeth->ug_info->transmitFlowControl = pause->tx_pause;
 158
 159         if (ugeth->phydev->autoneg) {
 160                 if (netif_running(netdev)) {
 161                         /* FIXME: automatically restart */
 162                         netdev_info(netdev, "Please re-open the interface\n");
 163                 }
 164         } else {
 165                 struct ucc_geth_info *ug_info = ugeth->ug_info;
 166
 167                 ret = init_flow_control_params(ug_info->aufc,
 168                                         ug_info->receiveFlowControl,
 169                                         ug_info->transmitFlowControl,
 170                                         ug_info->pausePeriod,
 171                                         ug_info->extensionField,
 172                                         &ugeth->uccf->uf_regs->upsmr,
 173                                         &ugeth->ug_regs->uempr,
 174                                         &ugeth->ug_regs->maccfg1);
 175         }
 176
 177         return ret;
 178 }
 179
 180 static uint32_t
 181 uec_get_msglevel(struct net_device *netdev)
 182 {
 183         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 184         return ugeth->msg_enable;
 185 }
 186
 187 static void
 188 uec_set_msglevel(struct net_device *netdev, uint32_t data)
 189 {
 190         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 191         ugeth->msg_enable = data;
 192 }
 193
 194 static int
 195 uec_get_regs_len(struct net_device *netdev)
 196 {
 197         return sizeof(struct ucc_geth);
 198 }
 199
 200 static void
 201 uec_get_regs(struct net_device *netdev,
 202                struct ethtool_regs *regs, void *p)
 203 {
 204         int i;
 205         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 206         u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
 207         u32 *buff = p;
 208
 209         for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
 210                 buff[i] = in_be32(&ug_regs[i]);
 211 }
 212
 213 static void
 214 uec_get_ringparam(struct net_device *netdev,
 215                     struct ethtool_ringparam *ring)
 216 {
 217         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 218         struct ucc_geth_info *ug_info = ugeth->ug_info;
 219         int queue = 0;
 220
 221         ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 222         ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 223         ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 224         ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 225
 226         ring->rx_pending = ug_info->bdRingLenRx[queue];
 227         ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
 228         ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
 229         ring->tx_pending = ug_info->bdRingLenTx[queue];
 230 }
 231
 232 static int
 233 uec_set_ringparam(struct net_device *netdev,
 234                     struct ethtool_ringparam *ring)
 235 {
 236         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 237         struct ucc_geth_info *ug_info = ugeth->ug_info;
 238         int queue = 0, ret = 0;
 239
 240         if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
 241                 netdev_info(netdev, "RxBD ring size must be no smaller than %d\n",
 242                             UCC_GETH_RX_BD_RING_SIZE_MIN);
 243                 return -EINVAL;
 244         }
 245         if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
 246                 netdev_info(netdev, "RxBD ring size must be multiple of %d\n",
 247                             UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
 248                 return -EINVAL;
 249         }
 250         if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
 251                 netdev_info(netdev, "TxBD ring size must be no smaller than %d\n",
 252                             UCC_GETH_TX_BD_RING_SIZE_MIN);
 253                 return -EINVAL;
 254         }
 255
 256         if (netif_running(netdev))
 257                 return -EBUSY;
 258
 259         ug_info->bdRingLenRx[queue] = ring->rx_pending;
 260         ug_info->bdRingLenTx[queue] = ring->tx_pending;
 261
 262         return ret;
 263 }
 264
 265 static int uec_get_sset_count(struct net_device *netdev, int sset)
 266 {
 267         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 268         u32 stats_mode = ugeth->ug_info->statisticsMode;
 269         int len = 0;
 270
 271         switch (sset) {
 272         case ETH_SS_STATS:
 273                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
 274                         len += UEC_HW_STATS_LEN;
 275                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
 276                         len += UEC_TX_FW_STATS_LEN;
 277                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 278                         len += UEC_RX_FW_STATS_LEN;
 279
 280                 return len;
 281
 282         default:
 283                 return -EOPNOTSUPP;
 284         }
 285 }
 286
 287 static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
 288 {
 289         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 290         u32 stats_mode = ugeth->ug_info->statisticsMode;
 291
 292         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 293                 memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
 294                                 ETH_GSTRING_LEN);
 295                 buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
 296         }
 297         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
 298                 memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
 299                                 ETH_GSTRING_LEN);
 300                 buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
 301         }
 302         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 303                 memcpy(buf, rx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
 304                                 ETH_GSTRING_LEN);
 305 }
 306
 307 static void uec_get_ethtool_stats(struct net_device *netdev,
 308                 struct ethtool_stats *stats, uint64_t *data)
 309 {
 310         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 311         u32 stats_mode = ugeth->ug_info->statisticsMode;
 312         u32 __iomem *base;
 313         int i, j = 0;
 314
 315         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 316                 if (ugeth->ug_regs)
 317                         base = (u32 __iomem *)&ugeth->ug_regs->tx64;
 318                 else
 319                         base = NULL;
 320
 321                 for (i = 0; i < UEC_HW_STATS_LEN; i++)
 322                         data[j++] = base ? in_be32(&base[i]) : 0;
 323         }
 324         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
 325                 base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
 326                 for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
 327                         data[j++] = base ? in_be32(&base[i]) : 0;
 328         }
 329         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
 330                 base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
 331                 for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
 332                         data[j++] = base ? in_be32(&base[i]) : 0;
 333         }
 334 }
 335
 336 static int uec_nway_reset(struct net_device *netdev)
 337 {
 338         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 339
 340         return phy_start_aneg(ugeth->phydev);
 341 }
 342
 343 /* Report driver information */
 344 static void
 345 uec_get_drvinfo(struct net_device *netdev,
 346                        struct ethtool_drvinfo *drvinfo)
 347 {
 348         strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 349         strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
 350         strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
 351         strlcpy(drvinfo->bus_info, "QUICC ENGINE", sizeof(drvinfo->bus_info));
 352 }
 353
 354 #ifdef CONFIG_PM
 355
 356 static void uec_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 357 {
 358         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 359         struct phy_device *phydev = ugeth->phydev;
 360
 361         if (phydev && phydev->irq)
 362                 wol->supported |= WAKE_PHY;
 363         if (qe_alive_during_sleep())
 364                 wol->supported |= WAKE_MAGIC;
 365
 366         wol->wolopts = ugeth->wol_en;
 367 }
 368
 369 static int uec_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 370 {
 371         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 372         struct phy_device *phydev = ugeth->phydev;
 373
 374         if (wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
 375                 return -EINVAL;
 376         else if (wol->wolopts & WAKE_PHY && (!phydev || !phydev->irq))
 377                 return -EINVAL;
 378         else if (wol->wolopts & WAKE_MAGIC && !qe_alive_during_sleep())
 379                 return -EINVAL;
 380
 381         ugeth->wol_en = wol->wolopts;
 382         device_set_wakeup_enable(&netdev->dev, ugeth->wol_en);
 383
 384         return 0;
 385 }
 386
 387 #else
 388 #define uec_get_wol NULL
 389 #define uec_set_wol NULL
 390 #endif /* CONFIG_PM */
 391
 392 static const struct ethtool_ops uec_ethtool_ops = {
 393         .get_settings           = uec_get_settings,
 394         .set_settings           = uec_set_settings,
 395         .get_drvinfo            = uec_get_drvinfo,
 396         .get_regs_len           = uec_get_regs_len,
 397         .get_regs               = uec_get_regs,
 398         .get_msglevel           = uec_get_msglevel,
 399         .set_msglevel           = uec_set_msglevel,
 400         .nway_reset             = uec_nway_reset,
 401         .get_link               = ethtool_op_get_link,
 402         .get_ringparam          = uec_get_ringparam,
 403         .set_ringparam          = uec_set_ringparam,
 404         .get_pauseparam         = uec_get_pauseparam,
 405         .set_pauseparam         = uec_set_pauseparam,
 406         .get_sset_count         = uec_get_sset_count,
 407         .get_strings            = uec_get_strings,
 408         .get_ethtool_stats      = uec_get_ethtool_stats,
 409         .get_wol                = uec_get_wol,
 410         .set_wol                = uec_set_wol,
 411         .get_ts_info            = ethtool_op_get_ts_info,
 412 };
 413
 414 void uec_set_ethtool_ops(struct net_device *netdev)
 415 {
 416         netdev->ethtool_ops = &uec_ethtool_ops;
 417 }