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_ksettings(struct net_device *netdev, struct ethtool_link_ksettings *cmd)
 109 {
 110         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 111         struct phy_device *phydev = ugeth->phydev;
 112
 113         if (!phydev)
 114                 return -ENODEV;
 115
 116         return phy_ethtool_ksettings_get(phydev, cmd);
 117 }
 118
 119 static int
 120 uec_set_ksettings(struct net_device *netdev,
 121                   const struct ethtool_link_ksettings *cmd)
 122 {
 123         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 124         struct phy_device *phydev = ugeth->phydev;
 125
 126         if (!phydev)
 127                 return -ENODEV;
 128
 129         return phy_ethtool_ksettings_set(phydev, cmd);
 130 }
 131
 132 static void
 133 uec_get_pauseparam(struct net_device *netdev,
 134                      struct ethtool_pauseparam *pause)
 135 {
 136         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 137
 138         pause->autoneg = ugeth->phydev->autoneg;
 139
 140         if (ugeth->ug_info->receiveFlowControl)
 141                 pause->rx_pause = 1;
 142         if (ugeth->ug_info->transmitFlowControl)
 143                 pause->tx_pause = 1;
 144 }
 145
 146 static int
 147 uec_set_pauseparam(struct net_device *netdev,
 148                      struct ethtool_pauseparam *pause)
 149 {
 150         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 151         int ret = 0;
 152
 153         ugeth->ug_info->receiveFlowControl = pause->rx_pause;
 154         ugeth->ug_info->transmitFlowControl = pause->tx_pause;
 155
 156         if (ugeth->phydev->autoneg) {
 157                 if (netif_running(netdev)) {
 158                         /* FIXME: automatically restart */
 159                         netdev_info(netdev, "Please re-open the interface\n");
 160                 }
 161         } else {
 162                 struct ucc_geth_info *ug_info = ugeth->ug_info;
 163
 164                 ret = init_flow_control_params(ug_info->aufc,
 165                                         ug_info->receiveFlowControl,
 166                                         ug_info->transmitFlowControl,
 167                                         ug_info->pausePeriod,
 168                                         ug_info->extensionField,
 169                                         &ugeth->uccf->uf_regs->upsmr,
 170                                         &ugeth->ug_regs->uempr,
 171                                         &ugeth->ug_regs->maccfg1);
 172         }
 173
 174         return ret;
 175 }
 176
 177 static uint32_t
 178 uec_get_msglevel(struct net_device *netdev)
 179 {
 180         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 181         return ugeth->msg_enable;
 182 }
 183
 184 static void
 185 uec_set_msglevel(struct net_device *netdev, uint32_t data)
 186 {
 187         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 188         ugeth->msg_enable = data;
 189 }
 190
 191 static int
 192 uec_get_regs_len(struct net_device *netdev)
 193 {
 194         return sizeof(struct ucc_geth);
 195 }
 196
 197 static void
 198 uec_get_regs(struct net_device *netdev,
 199                struct ethtool_regs *regs, void *p)
 200 {
 201         int i;
 202         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 203         u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
 204         u32 *buff = p;
 205
 206         for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
 207                 buff[i] = in_be32(&ug_regs[i]);
 208 }
 209
 210 static void
 211 uec_get_ringparam(struct net_device *netdev,
 212                     struct ethtool_ringparam *ring)
 213 {
 214         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 215         struct ucc_geth_info *ug_info = ugeth->ug_info;
 216         int queue = 0;
 217
 218         ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 219         ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 220         ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 221         ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 222
 223         ring->rx_pending = ug_info->bdRingLenRx[queue];
 224         ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
 225         ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
 226         ring->tx_pending = ug_info->bdRingLenTx[queue];
 227 }
 228
 229 static int
 230 uec_set_ringparam(struct net_device *netdev,
 231                     struct ethtool_ringparam *ring)
 232 {
 233         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 234         struct ucc_geth_info *ug_info = ugeth->ug_info;
 235         int queue = 0, ret = 0;
 236
 237         if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
 238                 netdev_info(netdev, "RxBD ring size must be no smaller than %d\n",
 239                             UCC_GETH_RX_BD_RING_SIZE_MIN);
 240                 return -EINVAL;
 241         }
 242         if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
 243                 netdev_info(netdev, "RxBD ring size must be multiple of %d\n",
 244                             UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
 245                 return -EINVAL;
 246         }
 247         if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
 248                 netdev_info(netdev, "TxBD ring size must be no smaller than %d\n",
 249                             UCC_GETH_TX_BD_RING_SIZE_MIN);
 250                 return -EINVAL;
 251         }
 252
 253         if (netif_running(netdev))
 254                 return -EBUSY;
 255
 256         ug_info->bdRingLenRx[queue] = ring->rx_pending;
 257         ug_info->bdRingLenTx[queue] = ring->tx_pending;
 258
 259         return ret;
 260 }
 261
 262 static int uec_get_sset_count(struct net_device *netdev, int sset)
 263 {
 264         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 265         u32 stats_mode = ugeth->ug_info->statisticsMode;
 266         int len = 0;
 267
 268         switch (sset) {
 269         case ETH_SS_STATS:
 270                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
 271                         len += UEC_HW_STATS_LEN;
 272                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
 273                         len += UEC_TX_FW_STATS_LEN;
 274                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 275                         len += UEC_RX_FW_STATS_LEN;
 276
 277                 return len;
 278
 279         default:
 280                 return -EOPNOTSUPP;
 281         }
 282 }
 283
 284 static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
 285 {
 286         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 287         u32 stats_mode = ugeth->ug_info->statisticsMode;
 288
 289         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 290                 memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
 291                                 ETH_GSTRING_LEN);
 292                 buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
 293         }
 294         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
 295                 memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
 296                                 ETH_GSTRING_LEN);
 297                 buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
 298         }
 299         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 300                 memcpy(buf, rx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
 301                                 ETH_GSTRING_LEN);
 302 }
 303
 304 static void uec_get_ethtool_stats(struct net_device *netdev,
 305                 struct ethtool_stats *stats, uint64_t *data)
 306 {
 307         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 308         u32 stats_mode = ugeth->ug_info->statisticsMode;
 309         u32 __iomem *base;
 310         int i, j = 0;
 311
 312         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 313                 if (ugeth->ug_regs)
 314                         base = (u32 __iomem *)&ugeth->ug_regs->tx64;
 315                 else
 316                         base = NULL;
 317
 318                 for (i = 0; i < UEC_HW_STATS_LEN; i++)
 319                         data[j++] = base ? in_be32(&base[i]) : 0;
 320         }
 321         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
 322                 base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
 323                 for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
 324                         data[j++] = base ? in_be32(&base[i]) : 0;
 325         }
 326         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
 327                 base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
 328                 for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
 329                         data[j++] = base ? in_be32(&base[i]) : 0;
 330         }
 331 }
 332
 333 static int uec_nway_reset(struct net_device *netdev)
 334 {
 335         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 336
 337         return phy_start_aneg(ugeth->phydev);
 338 }
 339
 340 /* Report driver information */
 341 static void
 342 uec_get_drvinfo(struct net_device *netdev,
 343                        struct ethtool_drvinfo *drvinfo)
 344 {
 345         strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 346         strlcpy(drvinfo->version, DRV_VERSION, sizeof(drvinfo->version));
 347         strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
 348         strlcpy(drvinfo->bus_info, "QUICC ENGINE", sizeof(drvinfo->bus_info));
 349 }
 350
 351 #ifdef CONFIG_PM
 352
 353 static void uec_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 354 {
 355         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 356         struct phy_device *phydev = ugeth->phydev;
 357
 358         if (phydev && phydev->irq)
 359                 wol->supported |= WAKE_PHY;
 360         if (qe_alive_during_sleep())
 361                 wol->supported |= WAKE_MAGIC;
 362
 363         wol->wolopts = ugeth->wol_en;
 364 }
 365
 366 static int uec_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 367 {
 368         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 369         struct phy_device *phydev = ugeth->phydev;
 370
 371         if (wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
 372                 return -EINVAL;
 373         else if (wol->wolopts & WAKE_PHY && (!phydev || !phydev->irq))
 374                 return -EINVAL;
 375         else if (wol->wolopts & WAKE_MAGIC && !qe_alive_during_sleep())
 376                 return -EINVAL;
 377
 378         ugeth->wol_en = wol->wolopts;
 379         device_set_wakeup_enable(&netdev->dev, ugeth->wol_en);
 380
 381         return 0;
 382 }
 383
 384 #else
 385 #define uec_get_wol NULL
 386 #define uec_set_wol NULL
 387 #endif /* CONFIG_PM */
 388
 389 static const struct ethtool_ops uec_ethtool_ops = {
 390         .get_drvinfo            = uec_get_drvinfo,
 391         .get_regs_len           = uec_get_regs_len,
 392         .get_regs               = uec_get_regs,
 393         .get_msglevel           = uec_get_msglevel,
 394         .set_msglevel           = uec_set_msglevel,
 395         .nway_reset             = uec_nway_reset,
 396         .get_link               = ethtool_op_get_link,
 397         .get_ringparam          = uec_get_ringparam,
 398         .set_ringparam          = uec_set_ringparam,
 399         .get_pauseparam         = uec_get_pauseparam,
 400         .set_pauseparam         = uec_set_pauseparam,
 401         .get_sset_count         = uec_get_sset_count,
 402         .get_strings            = uec_get_strings,
 403         .get_ethtool_stats      = uec_get_ethtool_stats,
 404         .get_wol                = uec_get_wol,
 405         .set_wol                = uec_set_wol,
 406         .get_ts_info            = ethtool_op_get_ts_info,
 407         .get_link_ksettings     = uec_get_ksettings,
 408         .set_link_ksettings     = uec_set_ksettings,
 409 };
 410
 411 void uec_set_ethtool_ops(struct net_device *netdev)
 412 {
 413         netdev->ethtool_ops = &uec_ethtool_ops;
 414 }