drivers/net/ethernet/freescale/ucc_geth_ethtool.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (c) 2007 Freescale Semiconductor, Inc. All rights reserved.
   4  *
   5  * Description: QE UCC Gigabit Ethernet Ethtool API Set
   6  *
   7  * Author: Li Yang <leoli@freescale.com>
   8  *
   9  * Limitation:
  10  * Can only get/set settings of the first queue.
  11  * Need to re-open the interface manually after changing some parameters.
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/errno.h>
  16 #include <linux/stddef.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/netdevice.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/skbuff.h>
  21 #include <linux/spinlock.h>
  22 #include <linux/mm.h>
  23 #include <linux/delay.h>
  24 #include <linux/dma-mapping.h>
  25 #include <linux/ethtool.h>
  26 #include <linux/mii.h>
  27 #include <linux/phy.h>
  28
  29 #include <asm/io.h>
  30 #include <asm/irq.h>
  31 #include <linux/uaccess.h>
  32 #include <asm/types.h>
  33
  34 #include "ucc_geth.h"
  35
  36 static const char hw_stat_gstrings[][ETH_GSTRING_LEN] = {
  37         "tx-64-frames",
  38         "tx-65-127-frames",
  39         "tx-128-255-frames",
  40         "rx-64-frames",
  41         "rx-65-127-frames",
  42         "rx-128-255-frames",
  43         "tx-bytes-ok",
  44         "tx-pause-frames",
  45         "tx-multicast-frames",
  46         "tx-broadcast-frames",
  47         "rx-frames",
  48         "rx-bytes-ok",
  49         "rx-bytes-all",
  50         "rx-multicast-frames",
  51         "rx-broadcast-frames",
  52         "stats-counter-carry",
  53         "stats-counter-mask",
  54         "rx-dropped-frames",
  55 };
  56
  57 static const char tx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
  58         "tx-single-collision",
  59         "tx-multiple-collision",
  60         "tx-late-collision",
  61         "tx-aborted-frames",
  62         "tx-lost-frames",
  63         "tx-carrier-sense-errors",
  64         "tx-frames-ok",
  65         "tx-excessive-differ-frames",
  66         "tx-256-511-frames",
  67         "tx-512-1023-frames",
  68         "tx-1024-1518-frames",
  69         "tx-jumbo-frames",
  70 };
  71
  72 static const char rx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
  73         "rx-crc-errors",
  74         "rx-alignment-errors",
  75         "rx-in-range-length-errors",
  76         "rx-out-of-range-length-errors",
  77         "rx-too-long-frames",
  78         "rx-runt",
  79         "rx-very-long-event",
  80         "rx-symbol-errors",
  81         "rx-busy-drop-frames",
  82         "reserved",
  83         "reserved",
  84         "rx-mismatch-drop-frames",
  85         "rx-small-than-64",
  86         "rx-256-511-frames",
  87         "rx-512-1023-frames",
  88         "rx-1024-1518-frames",
  89         "rx-jumbo-frames",
  90         "rx-mac-error-loss",
  91         "rx-pause-frames",
  92         "reserved",
  93         "rx-vlan-removed",
  94         "rx-vlan-replaced",
  95         "rx-vlan-inserted",
  96         "rx-ip-checksum-errors",
  97 };
  98
  99 #define UEC_HW_STATS_LEN ARRAY_SIZE(hw_stat_gstrings)
 100 #define UEC_TX_FW_STATS_LEN ARRAY_SIZE(tx_fw_stat_gstrings)
 101 #define UEC_RX_FW_STATS_LEN ARRAY_SIZE(rx_fw_stat_gstrings)
 102
 103 static int
 104 uec_get_ksettings(struct net_device *netdev, struct ethtool_link_ksettings *cmd)
 105 {
 106         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 107         struct phy_device *phydev = ugeth->phydev;
 108
 109         if (!phydev)
 110                 return -ENODEV;
 111
 112         phy_ethtool_ksettings_get(phydev, cmd);
 113
 114         return 0;
 115 }
 116
 117 static int
 118 uec_set_ksettings(struct net_device *netdev,
 119                   const struct ethtool_link_ksettings *cmd)
 120 {
 121         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 122         struct phy_device *phydev = ugeth->phydev;
 123
 124         if (!phydev)
 125                 return -ENODEV;
 126
 127         return phy_ethtool_ksettings_set(phydev, cmd);
 128 }
 129
 130 static void
 131 uec_get_pauseparam(struct net_device *netdev,
 132                      struct ethtool_pauseparam *pause)
 133 {
 134         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 135
 136         pause->autoneg = ugeth->phydev->autoneg;
 137
 138         if (ugeth->ug_info->receiveFlowControl)
 139                 pause->rx_pause = 1;
 140         if (ugeth->ug_info->transmitFlowControl)
 141                 pause->tx_pause = 1;
 142 }
 143
 144 static int
 145 uec_set_pauseparam(struct net_device *netdev,
 146                      struct ethtool_pauseparam *pause)
 147 {
 148         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 149         int ret = 0;
 150
 151         ugeth->ug_info->receiveFlowControl = pause->rx_pause;
 152         ugeth->ug_info->transmitFlowControl = pause->tx_pause;
 153
 154         if (ugeth->phydev->autoneg) {
 155                 if (netif_running(netdev)) {
 156                         /* FIXME: automatically restart */
 157                         netdev_info(netdev, "Please re-open the interface\n");
 158                 }
 159         } else {
 160                 struct ucc_geth_info *ug_info = ugeth->ug_info;
 161
 162                 ret = init_flow_control_params(ug_info->aufc,
 163                                         ug_info->receiveFlowControl,
 164                                         ug_info->transmitFlowControl,
 165                                         ug_info->pausePeriod,
 166                                         ug_info->extensionField,
 167                                         &ugeth->uccf->uf_regs->upsmr,
 168                                         &ugeth->ug_regs->uempr,
 169                                         &ugeth->ug_regs->maccfg1);
 170         }
 171
 172         return ret;
 173 }
 174
 175 static uint32_t
 176 uec_get_msglevel(struct net_device *netdev)
 177 {
 178         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 179         return ugeth->msg_enable;
 180 }
 181
 182 static void
 183 uec_set_msglevel(struct net_device *netdev, uint32_t data)
 184 {
 185         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 186         ugeth->msg_enable = data;
 187 }
 188
 189 static int
 190 uec_get_regs_len(struct net_device *netdev)
 191 {
 192         return sizeof(struct ucc_geth);
 193 }
 194
 195 static void
 196 uec_get_regs(struct net_device *netdev,
 197                struct ethtool_regs *regs, void *p)
 198 {
 199         int i;
 200         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 201         u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
 202         u32 *buff = p;
 203
 204         for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
 205                 buff[i] = in_be32(&ug_regs[i]);
 206 }
 207
 208 static void
 209 uec_get_ringparam(struct net_device *netdev,
 210                     struct ethtool_ringparam *ring)
 211 {
 212         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 213         struct ucc_geth_info *ug_info = ugeth->ug_info;
 214         int queue = 0;
 215
 216         ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 217         ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 218         ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 219         ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 220
 221         ring->rx_pending = ug_info->bdRingLenRx[queue];
 222         ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
 223         ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
 224         ring->tx_pending = ug_info->bdRingLenTx[queue];
 225 }
 226
 227 static int
 228 uec_set_ringparam(struct net_device *netdev,
 229                     struct ethtool_ringparam *ring)
 230 {
 231         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 232         struct ucc_geth_info *ug_info = ugeth->ug_info;
 233         int queue = 0, ret = 0;
 234
 235         if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
 236                 netdev_info(netdev, "RxBD ring size must be no smaller than %d\n",
 237                             UCC_GETH_RX_BD_RING_SIZE_MIN);
 238                 return -EINVAL;
 239         }
 240         if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
 241                 netdev_info(netdev, "RxBD ring size must be multiple of %d\n",
 242                             UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
 243                 return -EINVAL;
 244         }
 245         if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
 246                 netdev_info(netdev, "TxBD ring size must be no smaller than %d\n",
 247                             UCC_GETH_TX_BD_RING_SIZE_MIN);
 248                 return -EINVAL;
 249         }
 250
 251         if (netif_running(netdev))
 252                 return -EBUSY;
 253
 254         ug_info->bdRingLenRx[queue] = ring->rx_pending;
 255         ug_info->bdRingLenTx[queue] = ring->tx_pending;
 256
 257         return ret;
 258 }
 259
 260 static int uec_get_sset_count(struct net_device *netdev, int sset)
 261 {
 262         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 263         u32 stats_mode = ugeth->ug_info->statisticsMode;
 264         int len = 0;
 265
 266         switch (sset) {
 267         case ETH_SS_STATS:
 268                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
 269                         len += UEC_HW_STATS_LEN;
 270                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
 271                         len += UEC_TX_FW_STATS_LEN;
 272                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 273                         len += UEC_RX_FW_STATS_LEN;
 274
 275                 return len;
 276
 277         default:
 278                 return -EOPNOTSUPP;
 279         }
 280 }
 281
 282 static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
 283 {
 284         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 285         u32 stats_mode = ugeth->ug_info->statisticsMode;
 286
 287         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 288                 memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
 289                                 ETH_GSTRING_LEN);
 290                 buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
 291         }
 292         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
 293                 memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
 294                                 ETH_GSTRING_LEN);
 295                 buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
 296         }
 297         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 298                 memcpy(buf, rx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
 299                                 ETH_GSTRING_LEN);
 300 }
 301
 302 static void uec_get_ethtool_stats(struct net_device *netdev,
 303                 struct ethtool_stats *stats, uint64_t *data)
 304 {
 305         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 306         u32 stats_mode = ugeth->ug_info->statisticsMode;
 307         u32 __iomem *base;
 308         int i, j = 0;
 309
 310         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 311                 if (ugeth->ug_regs)
 312                         base = (u32 __iomem *)&ugeth->ug_regs->tx64;
 313                 else
 314                         base = NULL;
 315
 316                 for (i = 0; i < UEC_HW_STATS_LEN; i++)
 317                         data[j++] = base ? in_be32(&base[i]) : 0;
 318         }
 319         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
 320                 base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
 321                 for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
 322                         data[j++] = base ? in_be32(&base[i]) : 0;
 323         }
 324         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
 325                 base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
 326                 for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
 327                         data[j++] = base ? in_be32(&base[i]) : 0;
 328         }
 329 }
 330
 331 /* Report driver information */
 332 static void
 333 uec_get_drvinfo(struct net_device *netdev,
 334                        struct ethtool_drvinfo *drvinfo)
 335 {
 336         strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
 337         strlcpy(drvinfo->bus_info, "QUICC ENGINE", sizeof(drvinfo->bus_info));
 338 }
 339
 340 #ifdef CONFIG_PM
 341
 342 static void uec_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 343 {
 344         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 345         struct phy_device *phydev = ugeth->phydev;
 346
 347         if (phydev && phydev->irq)
 348                 wol->supported |= WAKE_PHY;
 349         if (qe_alive_during_sleep())
 350                 wol->supported |= WAKE_MAGIC;
 351
 352         wol->wolopts = ugeth->wol_en;
 353 }
 354
 355 static int uec_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 356 {
 357         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 358         struct phy_device *phydev = ugeth->phydev;
 359
 360         if (wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
 361                 return -EINVAL;
 362         else if (wol->wolopts & WAKE_PHY && (!phydev || !phydev->irq))
 363                 return -EINVAL;
 364         else if (wol->wolopts & WAKE_MAGIC && !qe_alive_during_sleep())
 365                 return -EINVAL;
 366
 367         ugeth->wol_en = wol->wolopts;
 368         device_set_wakeup_enable(&netdev->dev, ugeth->wol_en);
 369
 370         return 0;
 371 }
 372
 373 #else
 374 #define uec_get_wol NULL
 375 #define uec_set_wol NULL
 376 #endif /* CONFIG_PM */
 377
 378 static const struct ethtool_ops uec_ethtool_ops = {
 379         .get_drvinfo            = uec_get_drvinfo,
 380         .get_regs_len           = uec_get_regs_len,
 381         .get_regs               = uec_get_regs,
 382         .get_msglevel           = uec_get_msglevel,
 383         .set_msglevel           = uec_set_msglevel,
 384         .nway_reset             = phy_ethtool_nway_reset,
 385         .get_link               = ethtool_op_get_link,
 386         .get_ringparam          = uec_get_ringparam,
 387         .set_ringparam          = uec_set_ringparam,
 388         .get_pauseparam         = uec_get_pauseparam,
 389         .set_pauseparam         = uec_set_pauseparam,
 390         .get_sset_count         = uec_get_sset_count,
 391         .get_strings            = uec_get_strings,
 392         .get_ethtool_stats      = uec_get_ethtool_stats,
 393         .get_wol                = uec_get_wol,
 394         .set_wol                = uec_set_wol,
 395         .get_ts_info            = ethtool_op_get_ts_info,
 396         .get_link_ksettings     = uec_get_ksettings,
 397         .set_link_ksettings     = uec_set_ksettings,
 398 };
 399
 400 void uec_set_ethtool_ops(struct net_device *netdev)
 401 {
 402         netdev->ethtool_ops = &uec_ethtool_ops;
 403 }