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/init.h>
  20 #include <linux/errno.h>
  21 #include <linux/stddef.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/etherdevice.h>
  25 #include <linux/skbuff.h>
  26 #include <linux/spinlock.h>
  27 #include <linux/mm.h>
  28 #include <linux/delay.h>
  29 #include <linux/dma-mapping.h>
  30 #include <linux/ethtool.h>
  31 #include <linux/mii.h>
  32 #include <linux/phy.h>
  33
  34 #include <asm/io.h>
  35 #include <asm/irq.h>
  36 #include <asm/uaccess.h>
  37 #include <asm/types.h>
  38
  39 #include "ucc_geth.h"
  40
  41 static char hw_stat_gstrings[][ETH_GSTRING_LEN] = {
  42         "tx-64-frames",
  43         "tx-65-127-frames",
  44         "tx-128-255-frames",
  45         "rx-64-frames",
  46         "rx-65-127-frames",
  47         "rx-128-255-frames",
  48         "tx-bytes-ok",
  49         "tx-pause-frames",
  50         "tx-multicast-frames",
  51         "tx-broadcast-frames",
  52         "rx-frames",
  53         "rx-bytes-ok",
  54         "rx-bytes-all",
  55         "rx-multicast-frames",
  56         "rx-broadcast-frames",
  57         "stats-counter-carry",
  58         "stats-counter-mask",
  59         "rx-dropped-frames",
  60 };
  61
  62 static char tx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
  63         "tx-single-collision",
  64         "tx-multiple-collision",
  65         "tx-late-collsion",
  66         "tx-aborted-frames",
  67         "tx-lost-frames",
  68         "tx-carrier-sense-errors",
  69         "tx-frames-ok",
  70         "tx-excessive-differ-frames",
  71         "tx-256-511-frames",
  72         "tx-512-1023-frames",
  73         "tx-1024-1518-frames",
  74         "tx-jumbo-frames",
  75 };
  76
  77 static char rx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
  78         "rx-crc-errors",
  79         "rx-alignment-errors",
  80         "rx-in-range-length-errors",
  81         "rx-out-of-range-length-errors",
  82         "rx-too-long-frames",
  83         "rx-runt",
  84         "rx-very-long-event",
  85         "rx-symbol-errors",
  86         "rx-busy-drop-frames",
  87         "reserved",
  88         "reserved",
  89         "rx-mismatch-drop-frames",
  90         "rx-small-than-64",
  91         "rx-256-511-frames",
  92         "rx-512-1023-frames",
  93         "rx-1024-1518-frames",
  94         "rx-jumbo-frames",
  95         "rx-mac-error-loss",
  96         "rx-pause-frames",
  97         "reserved",
  98         "rx-vlan-removed",
  99         "rx-vlan-replaced",
 100         "rx-vlan-inserted",
 101         "rx-ip-checksum-errors",
 102 };
 103
 104 #define UEC_HW_STATS_LEN ARRAY_SIZE(hw_stat_gstrings)
 105 #define UEC_TX_FW_STATS_LEN ARRAY_SIZE(tx_fw_stat_gstrings)
 106 #define UEC_RX_FW_STATS_LEN ARRAY_SIZE(rx_fw_stat_gstrings)
 107
 108 static int
 109 uec_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 110 {
 111         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 112         struct phy_device *phydev = ugeth->phydev;
 113         struct ucc_geth_info *ug_info = ugeth->ug_info;
 114
 115         if (!phydev)
 116                 return -ENODEV;
 117
 118         ecmd->maxtxpkt = 1;
 119         ecmd->maxrxpkt = ug_info->interruptcoalescingmaxvalue[0];
 120
 121         return phy_ethtool_gset(phydev, ecmd);
 122 }
 123
 124 static int
 125 uec_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 126 {
 127         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 128         struct phy_device *phydev = ugeth->phydev;
 129
 130         if (!phydev)
 131                 return -ENODEV;
 132
 133         return phy_ethtool_sset(phydev, ecmd);
 134 }
 135
 136 static void
 137 uec_get_pauseparam(struct net_device *netdev,
 138                      struct ethtool_pauseparam *pause)
 139 {
 140         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 141
 142         pause->autoneg = ugeth->phydev->autoneg;
 143
 144         if (ugeth->ug_info->receiveFlowControl)
 145                 pause->rx_pause = 1;
 146         if (ugeth->ug_info->transmitFlowControl)
 147                 pause->tx_pause = 1;
 148 }
 149
 150 static int
 151 uec_set_pauseparam(struct net_device *netdev,
 152                      struct ethtool_pauseparam *pause)
 153 {
 154         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 155         int ret = 0;
 156
 157         ugeth->ug_info->receiveFlowControl = pause->rx_pause;
 158         ugeth->ug_info->transmitFlowControl = pause->tx_pause;
 159
 160         if (ugeth->phydev->autoneg) {
 161                 if (netif_running(netdev)) {
 162                         /* FIXME: automatically restart */
 163                         printk(KERN_INFO
 164                                 "Please re-open the interface.\n");
 165                 }
 166         } else {
 167                 struct ucc_geth_info *ug_info = ugeth->ug_info;
 168
 169                 ret = init_flow_control_params(ug_info->aufc,
 170                                         ug_info->receiveFlowControl,
 171                                         ug_info->transmitFlowControl,
 172                                         ug_info->pausePeriod,
 173                                         ug_info->extensionField,
 174                                         &ugeth->uccf->uf_regs->upsmr,
 175                                         &ugeth->ug_regs->uempr,
 176                                         &ugeth->ug_regs->maccfg1);
 177         }
 178
 179         return ret;
 180 }
 181
 182 static uint32_t
 183 uec_get_msglevel(struct net_device *netdev)
 184 {
 185         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 186         return ugeth->msg_enable;
 187 }
 188
 189 static void
 190 uec_set_msglevel(struct net_device *netdev, uint32_t data)
 191 {
 192         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 193         ugeth->msg_enable = data;
 194 }
 195
 196 static int
 197 uec_get_regs_len(struct net_device *netdev)
 198 {
 199         return sizeof(struct ucc_geth);
 200 }
 201
 202 static void
 203 uec_get_regs(struct net_device *netdev,
 204                struct ethtool_regs *regs, void *p)
 205 {
 206         int i;
 207         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 208         u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
 209         u32 *buff = p;
 210
 211         for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
 212                 buff[i] = in_be32(&ug_regs[i]);
 213 }
 214
 215 static void
 216 uec_get_ringparam(struct net_device *netdev,
 217                     struct ethtool_ringparam *ring)
 218 {
 219         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 220         struct ucc_geth_info *ug_info = ugeth->ug_info;
 221         int queue = 0;
 222
 223         ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 224         ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 225         ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 226         ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 227
 228         ring->rx_pending = ug_info->bdRingLenRx[queue];
 229         ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
 230         ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
 231         ring->tx_pending = ug_info->bdRingLenTx[queue];
 232 }
 233
 234 static int
 235 uec_set_ringparam(struct net_device *netdev,
 236                     struct ethtool_ringparam *ring)
 237 {
 238         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 239         struct ucc_geth_info *ug_info = ugeth->ug_info;
 240         int queue = 0, ret = 0;
 241
 242         if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
 243                 printk("%s: RxBD ring size must be no smaller than %d.\n",
 244                                 netdev->name, UCC_GETH_RX_BD_RING_SIZE_MIN);
 245                 return -EINVAL;
 246         }
 247         if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
 248                 printk("%s: RxBD ring size must be multiple of %d.\n",
 249                         netdev->name, UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
 250                 return -EINVAL;
 251         }
 252         if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
 253                 printk("%s: TxBD ring size must be no smaller than %d.\n",
 254                                 netdev->name, UCC_GETH_TX_BD_RING_SIZE_MIN);
 255                 return -EINVAL;
 256         }
 257
 258         ug_info->bdRingLenRx[queue] = ring->rx_pending;
 259         ug_info->bdRingLenTx[queue] = ring->tx_pending;
 260
 261         if (netif_running(netdev)) {
 262                 /* FIXME: restart automatically */
 263                 printk(KERN_INFO
 264                         "Please re-open the interface.\n");
 265         }
 266
 267         return ret;
 268 }
 269
 270 static int uec_get_sset_count(struct net_device *netdev, int sset)
 271 {
 272         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 273         u32 stats_mode = ugeth->ug_info->statisticsMode;
 274         int len = 0;
 275
 276         switch (sset) {
 277         case ETH_SS_STATS:
 278                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
 279                         len += UEC_HW_STATS_LEN;
 280                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
 281                         len += UEC_TX_FW_STATS_LEN;
 282                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 283                         len += UEC_RX_FW_STATS_LEN;
 284
 285                 return len;
 286
 287         default:
 288                 return -EOPNOTSUPP;
 289         }
 290 }
 291
 292 static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
 293 {
 294         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 295         u32 stats_mode = ugeth->ug_info->statisticsMode;
 296
 297         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 298                 memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
 299                                 ETH_GSTRING_LEN);
 300                 buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
 301         }
 302         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
 303                 memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
 304                                 ETH_GSTRING_LEN);
 305                 buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
 306         }
 307         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 308                 memcpy(buf, rx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
 309                                 ETH_GSTRING_LEN);
 310 }
 311
 312 static void uec_get_ethtool_stats(struct net_device *netdev,
 313                 struct ethtool_stats *stats, uint64_t *data)
 314 {
 315         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 316         u32 stats_mode = ugeth->ug_info->statisticsMode;
 317         u32 __iomem *base;
 318         int i, j = 0;
 319
 320         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 321                 if (ugeth->ug_regs)
 322                         base = (u32 __iomem *)&ugeth->ug_regs->tx64;
 323                 else
 324                         base = NULL;
 325
 326                 for (i = 0; i < UEC_HW_STATS_LEN; i++)
 327                         data[j++] = base ? in_be32(&base[i]) : 0;
 328         }
 329         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
 330                 base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
 331                 for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
 332                         data[j++] = base ? in_be32(&base[i]) : 0;
 333         }
 334         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
 335                 base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
 336                 for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
 337                         data[j++] = base ? in_be32(&base[i]) : 0;
 338         }
 339 }
 340
 341 static int uec_nway_reset(struct net_device *netdev)
 342 {
 343         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 344
 345         return phy_start_aneg(ugeth->phydev);
 346 }
 347
 348 /* Report driver information */
 349 static void
 350 uec_get_drvinfo(struct net_device *netdev,
 351                        struct ethtool_drvinfo *drvinfo)
 352 {
 353         strncpy(drvinfo->driver, DRV_NAME, 32);
 354         strncpy(drvinfo->version, DRV_VERSION, 32);
 355         strncpy(drvinfo->fw_version, "N/A", 32);
 356         strncpy(drvinfo->bus_info, "QUICC ENGINE", 32);
 357         drvinfo->eedump_len = 0;
 358         drvinfo->regdump_len = uec_get_regs_len(netdev);
 359 }
 360
 361 #ifdef CONFIG_PM
 362
 363 static void uec_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 364 {
 365         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 366         struct phy_device *phydev = ugeth->phydev;
 367
 368         if (phydev && phydev->irq)
 369                 wol->supported |= WAKE_PHY;
 370         if (qe_alive_during_sleep())
 371                 wol->supported |= WAKE_MAGIC;
 372
 373         wol->wolopts = ugeth->wol_en;
 374 }
 375
 376 static int uec_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
 377 {
 378         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 379         struct phy_device *phydev = ugeth->phydev;
 380
 381         if (wol->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
 382                 return -EINVAL;
 383         else if (wol->wolopts & WAKE_PHY && (!phydev || !phydev->irq))
 384                 return -EINVAL;
 385         else if (wol->wolopts & WAKE_MAGIC && !qe_alive_during_sleep())
 386                 return -EINVAL;
 387
 388         ugeth->wol_en = wol->wolopts;
 389         device_set_wakeup_enable(&netdev->dev, ugeth->wol_en);
 390
 391         return 0;
 392 }
 393
 394 #else
 395 #define uec_get_wol NULL
 396 #define uec_set_wol NULL
 397 #endif /* CONFIG_PM */
 398
 399 static const struct ethtool_ops uec_ethtool_ops = {
 400         .get_settings           = uec_get_settings,
 401         .set_settings           = uec_set_settings,
 402         .get_drvinfo            = uec_get_drvinfo,
 403         .get_regs_len           = uec_get_regs_len,
 404         .get_regs               = uec_get_regs,
 405         .get_msglevel           = uec_get_msglevel,
 406         .set_msglevel           = uec_set_msglevel,
 407         .nway_reset             = uec_nway_reset,
 408         .get_link               = ethtool_op_get_link,
 409         .get_ringparam          = uec_get_ringparam,
 410         .set_ringparam          = uec_set_ringparam,
 411         .get_pauseparam         = uec_get_pauseparam,
 412         .set_pauseparam         = uec_set_pauseparam,
 413         .get_sset_count         = uec_get_sset_count,
 414         .get_strings            = uec_get_strings,
 415         .get_ethtool_stats      = uec_get_ethtool_stats,
 416         .get_wol                = uec_get_wol,
 417         .set_wol                = uec_set_wol,
 418 };
 419
 420 void uec_set_ethtool_ops(struct net_device *netdev)
 421 {
 422         SET_ETHTOOL_OPS(netdev, &uec_ethtool_ops);
 423 }