drivers/net/gianfar_ethtool.c

   1 /*
   2  *  drivers/net/gianfar_ethtool.c
   3  *
   4  *  Gianfar Ethernet Driver
   5  *  Ethtool support for Gianfar Enet
   6  *  Based on e1000 ethtool support
   7  *
   8  *  Author: Andy Fleming
   9  *  Maintainer: Kumar Gala
  10  *  Modifier: Sandeep Gopalpet <[email protected]>
  11  *
  12  *  Copyright 2003-2006, 2008-2009 Freescale Semiconductor, Inc.
  13  *
  14  *  This software may be used and distributed according to
  15  *  the terms of the GNU Public License, Version 2, incorporated herein
  16  *  by reference.
  17  */
  18
  19 #include <linux/kernel.h>
  20 #include <linux/string.h>
  21 #include <linux/errno.h>
  22 #include <linux/slab.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/init.h>
  25 #include <linux/delay.h>
  26 #include <linux/netdevice.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/skbuff.h>
  29 #include <linux/spinlock.h>
  30 #include <linux/mm.h>
  31
  32 #include <asm/io.h>
  33 #include <asm/irq.h>
  34 #include <asm/uaccess.h>
  35 #include <linux/module.h>
  36 #include <linux/crc32.h>
  37 #include <asm/types.h>
  38 #include <linux/ethtool.h>
  39 #include <linux/mii.h>
  40 #include <linux/phy.h>
  41
  42 #include "gianfar.h"
  43
  44 extern void gfar_start(struct net_device *dev);
  45 extern int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit);
  46
  47 #define GFAR_MAX_COAL_USECS 0xffff
  48 #define GFAR_MAX_COAL_FRAMES 0xff
  49 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
  50                      u64 * buf);
  51 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
  52 static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
  53 static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals);
  54 static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
  55 static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals);
  56 static void gfar_gdrvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo);
  57
  58 static char stat_gstrings[][ETH_GSTRING_LEN] = {
  59         "rx-dropped-by-kernel",
  60         "rx-large-frame-errors",
  61         "rx-short-frame-errors",
  62         "rx-non-octet-errors",
  63         "rx-crc-errors",
  64         "rx-overrun-errors",
  65         "rx-busy-errors",
  66         "rx-babbling-errors",
  67         "rx-truncated-frames",
  68         "ethernet-bus-error",
  69         "tx-babbling-errors",
  70         "tx-underrun-errors",
  71         "rx-skb-missing-errors",
  72         "tx-timeout-errors",
  73         "tx-rx-64-frames",
  74         "tx-rx-65-127-frames",
  75         "tx-rx-128-255-frames",
  76         "tx-rx-256-511-frames",
  77         "tx-rx-512-1023-frames",
  78         "tx-rx-1024-1518-frames",
  79         "tx-rx-1519-1522-good-vlan",
  80         "rx-bytes",
  81         "rx-packets",
  82         "rx-fcs-errors",
  83         "receive-multicast-packet",
  84         "receive-broadcast-packet",
  85         "rx-control-frame-packets",
  86         "rx-pause-frame-packets",
  87         "rx-unknown-op-code",
  88         "rx-alignment-error",
  89         "rx-frame-length-error",
  90         "rx-code-error",
  91         "rx-carrier-sense-error",
  92         "rx-undersize-packets",
  93         "rx-oversize-packets",
  94         "rx-fragmented-frames",
  95         "rx-jabber-frames",
  96         "rx-dropped-frames",
  97         "tx-byte-counter",
  98         "tx-packets",
  99         "tx-multicast-packets",
 100         "tx-broadcast-packets",
 101         "tx-pause-control-frames",
 102         "tx-deferral-packets",
 103         "tx-excessive-deferral-packets",
 104         "tx-single-collision-packets",
 105         "tx-multiple-collision-packets",
 106         "tx-late-collision-packets",
 107         "tx-excessive-collision-packets",
 108         "tx-total-collision",
 109         "reserved",
 110         "tx-dropped-frames",
 111         "tx-jabber-frames",
 112         "tx-fcs-errors",
 113         "tx-control-frames",
 114         "tx-oversize-frames",
 115         "tx-undersize-frames",
 116         "tx-fragmented-frames",
 117 };
 118
 119 /* Fill in a buffer with the strings which correspond to the
 120  * stats */
 121 static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
 122 {
 123         struct gfar_private *priv = netdev_priv(dev);
 124
 125         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 126                 memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
 127         else
 128                 memcpy(buf, stat_gstrings,
 129                                 GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
 130 }
 131
 132 /* Fill in an array of 64-bit statistics from various sources.
 133  * This array will be appended to the end of the ethtool_stats
 134  * structure, and returned to user space
 135  */
 136 static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy, u64 * buf)
 137 {
 138         int i;
 139         struct gfar_private *priv = netdev_priv(dev);
 140         struct gfar __iomem *regs = priv->gfargrp[0].regs;
 141         u64 *extra = (u64 *) & priv->extra_stats;
 142
 143         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
 144                 u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;
 145                 struct gfar_stats *stats = (struct gfar_stats *) buf;
 146
 147                 for (i = 0; i < GFAR_RMON_LEN; i++)
 148                         stats->rmon[i] = (u64) gfar_read(&rmon[i]);
 149
 150                 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
 151                         stats->extra[i] = extra[i];
 152         } else
 153                 for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
 154                         buf[i] = extra[i];
 155 }
 156
 157 static int gfar_sset_count(struct net_device *dev, int sset)
 158 {
 159         struct gfar_private *priv = netdev_priv(dev);
 160
 161         switch (sset) {
 162         case ETH_SS_STATS:
 163                 if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
 164                         return GFAR_STATS_LEN;
 165                 else
 166                         return GFAR_EXTRA_STATS_LEN;
 167         default:
 168                 return -EOPNOTSUPP;
 169         }
 170 }
 171
 172 /* Fills in the drvinfo structure with some basic info */
 173 static void gfar_gdrvinfo(struct net_device *dev, struct
 174               ethtool_drvinfo *drvinfo)
 175 {
 176         strncpy(drvinfo->driver, DRV_NAME, GFAR_INFOSTR_LEN);
 177         strncpy(drvinfo->version, gfar_driver_version, GFAR_INFOSTR_LEN);
 178         strncpy(drvinfo->fw_version, "N/A", GFAR_INFOSTR_LEN);
 179         strncpy(drvinfo->bus_info, "N/A", GFAR_INFOSTR_LEN);
 180         drvinfo->regdump_len = 0;
 181         drvinfo->eedump_len = 0;
 182 }
 183
 184
 185 static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
 186 {
 187         struct gfar_private *priv = netdev_priv(dev);
 188         struct phy_device *phydev = priv->phydev;
 189
 190         if (NULL == phydev)
 191                 return -ENODEV;
 192
 193         return phy_ethtool_sset(phydev, cmd);
 194 }
 195
 196
 197 /* Return the current settings in the ethtool_cmd structure */
 198 static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
 199 {
 200         struct gfar_private *priv = netdev_priv(dev);
 201         struct phy_device *phydev = priv->phydev;
 202         struct gfar_priv_rx_q *rx_queue = NULL;
 203         struct gfar_priv_tx_q *tx_queue = NULL;
 204
 205         if (NULL == phydev)
 206                 return -ENODEV;
 207         tx_queue = priv->tx_queue[0];
 208         rx_queue = priv->rx_queue[0];
 209
 210         /* etsec-1.7 and older versions have only one txic
 211          * and rxic regs although they support multiple queues */
 212         cmd->maxtxpkt = get_icft_value(tx_queue->txic);
 213         cmd->maxrxpkt = get_icft_value(rx_queue->rxic);
 214
 215         return phy_ethtool_gset(phydev, cmd);
 216 }
 217
 218 /* Return the length of the register structure */
 219 static int gfar_reglen(struct net_device *dev)
 220 {
 221         return sizeof (struct gfar);
 222 }
 223
 224 /* Return a dump of the GFAR register space */
 225 static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf)
 226 {
 227         int i;
 228         struct gfar_private *priv = netdev_priv(dev);
 229         u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
 230         u32 *buf = (u32 *) regbuf;
 231
 232         for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
 233                 buf[i] = gfar_read(&theregs[i]);
 234 }
 235
 236 /* Convert microseconds to ethernet clock ticks, which changes
 237  * depending on what speed the controller is running at */
 238 static unsigned int gfar_usecs2ticks(struct gfar_private *priv, unsigned int usecs)
 239 {
 240         unsigned int count;
 241
 242         /* The timer is different, depending on the interface speed */
 243         switch (priv->phydev->speed) {
 244         case SPEED_1000:
 245                 count = GFAR_GBIT_TIME;
 246                 break;
 247         case SPEED_100:
 248                 count = GFAR_100_TIME;
 249                 break;
 250         case SPEED_10:
 251         default:
 252                 count = GFAR_10_TIME;
 253                 break;
 254         }
 255
 256         /* Make sure we return a number greater than 0
 257          * if usecs > 0 */
 258         return ((usecs * 1000 + count - 1) / count);
 259 }
 260
 261 /* Convert ethernet clock ticks to microseconds */
 262 static unsigned int gfar_ticks2usecs(struct gfar_private *priv, unsigned int ticks)
 263 {
 264         unsigned int count;
 265
 266         /* The timer is different, depending on the interface speed */
 267         switch (priv->phydev->speed) {
 268         case SPEED_1000:
 269                 count = GFAR_GBIT_TIME;
 270                 break;
 271         case SPEED_100:
 272                 count = GFAR_100_TIME;
 273                 break;
 274         case SPEED_10:
 275         default:
 276                 count = GFAR_10_TIME;
 277                 break;
 278         }
 279
 280         /* Make sure we return a number greater than 0 */
 281         /* if ticks is > 0 */
 282         return ((ticks * count) / 1000);
 283 }
 284
 285 /* Get the coalescing parameters, and put them in the cvals
 286  * structure.  */
 287 static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
 288 {
 289         struct gfar_private *priv = netdev_priv(dev);
 290         struct gfar_priv_rx_q *rx_queue = NULL;
 291         struct gfar_priv_tx_q *tx_queue = NULL;
 292         unsigned long rxtime;
 293         unsigned long rxcount;
 294         unsigned long txtime;
 295         unsigned long txcount;
 296
 297         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 298                 return -EOPNOTSUPP;
 299
 300         if (NULL == priv->phydev)
 301                 return -ENODEV;
 302
 303         rx_queue = priv->rx_queue[0];
 304         tx_queue = priv->tx_queue[0];
 305
 306         rxtime  = get_ictt_value(rx_queue->rxic);
 307         rxcount = get_icft_value(rx_queue->rxic);
 308         txtime  = get_ictt_value(tx_queue->txic);
 309         txcount = get_icft_value(tx_queue->txic);
 310         cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
 311         cvals->rx_max_coalesced_frames = rxcount;
 312
 313         cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
 314         cvals->tx_max_coalesced_frames = txcount;
 315
 316         cvals->use_adaptive_rx_coalesce = 0;
 317         cvals->use_adaptive_tx_coalesce = 0;
 318
 319         cvals->pkt_rate_low = 0;
 320         cvals->rx_coalesce_usecs_low = 0;
 321         cvals->rx_max_coalesced_frames_low = 0;
 322         cvals->tx_coalesce_usecs_low = 0;
 323         cvals->tx_max_coalesced_frames_low = 0;
 324
 325         /* When the packet rate is below pkt_rate_high but above
 326          * pkt_rate_low (both measured in packets per second) the
 327          * normal {rx,tx}_* coalescing parameters are used.
 328          */
 329
 330         /* When the packet rate is (measured in packets per second)
 331          * is above pkt_rate_high, the {rx,tx}_*_high parameters are
 332          * used.
 333          */
 334         cvals->pkt_rate_high = 0;
 335         cvals->rx_coalesce_usecs_high = 0;
 336         cvals->rx_max_coalesced_frames_high = 0;
 337         cvals->tx_coalesce_usecs_high = 0;
 338         cvals->tx_max_coalesced_frames_high = 0;
 339
 340         /* How often to do adaptive coalescing packet rate sampling,
 341          * measured in seconds.  Must not be zero.
 342          */
 343         cvals->rate_sample_interval = 0;
 344
 345         return 0;
 346 }
 347
 348 /* Change the coalescing values.
 349  * Both cvals->*_usecs and cvals->*_frames have to be > 0
 350  * in order for coalescing to be active
 351  */
 352 static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals)
 353 {
 354         struct gfar_private *priv = netdev_priv(dev);
 355         int i = 0;
 356
 357         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
 358                 return -EOPNOTSUPP;
 359
 360         /* Set up rx coalescing */
 361         /* As of now, we will enable/disable coalescing for all
 362          * queues together in case of eTSEC2, this will be modified
 363          * along with the ethtool interface */
 364         if ((cvals->rx_coalesce_usecs == 0) ||
 365             (cvals->rx_max_coalesced_frames == 0)) {
 366                 for (i = 0; i < priv->num_rx_queues; i++)
 367                         priv->rx_queue[i]->rxcoalescing = 0;
 368         } else {
 369                 for (i = 0; i < priv->num_rx_queues; i++)
 370                         priv->rx_queue[i]->rxcoalescing = 1;
 371         }
 372
 373         if (NULL == priv->phydev)
 374                 return -ENODEV;
 375
 376         /* Check the bounds of the values */
 377         if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 378                 pr_info("Coalescing is limited to %d microseconds\n",
 379                                 GFAR_MAX_COAL_USECS);
 380                 return -EINVAL;
 381         }
 382
 383         if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 384                 pr_info("Coalescing is limited to %d frames\n",
 385                                 GFAR_MAX_COAL_FRAMES);
 386                 return -EINVAL;
 387         }
 388
 389         for (i = 0; i < priv->num_rx_queues; i++) {
 390                 priv->rx_queue[i]->rxic = mk_ic_value(
 391                         cvals->rx_max_coalesced_frames,
 392                         gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
 393         }
 394
 395         /* Set up tx coalescing */
 396         if ((cvals->tx_coalesce_usecs == 0) ||
 397             (cvals->tx_max_coalesced_frames == 0)) {
 398                 for (i = 0; i < priv->num_tx_queues; i++)
 399                         priv->tx_queue[i]->txcoalescing = 0;
 400         } else {
 401                 for (i = 0; i < priv->num_tx_queues; i++)
 402                         priv->tx_queue[i]->txcoalescing = 1;
 403         }
 404
 405         /* Check the bounds of the values */
 406         if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
 407                 pr_info("Coalescing is limited to %d microseconds\n",
 408                                 GFAR_MAX_COAL_USECS);
 409                 return -EINVAL;
 410         }
 411
 412         if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
 413                 pr_info("Coalescing is limited to %d frames\n",
 414                                 GFAR_MAX_COAL_FRAMES);
 415                 return -EINVAL;
 416         }
 417
 418         for (i = 0; i < priv->num_tx_queues; i++) {
 419                 priv->tx_queue[i]->txic = mk_ic_value(
 420                         cvals->tx_max_coalesced_frames,
 421                         gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
 422         }
 423
 424         gfar_configure_coalescing(priv, 0xFF, 0xFF);
 425
 426         return 0;
 427 }
 428
 429 /* Fills in rvals with the current ring parameters.  Currently,
 430  * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 431  * jumbo are ignored by the driver */
 432 static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals)
 433 {
 434         struct gfar_private *priv = netdev_priv(dev);
 435         struct gfar_priv_tx_q *tx_queue = NULL;
 436         struct gfar_priv_rx_q *rx_queue = NULL;
 437
 438         tx_queue = priv->tx_queue[0];
 439         rx_queue = priv->rx_queue[0];
 440
 441         rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
 442         rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
 443         rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
 444         rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;
 445
 446         /* Values changeable by the user.  The valid values are
 447          * in the range 1 to the "*_max_pending" counterpart above.
 448          */
 449         rvals->rx_pending = rx_queue->rx_ring_size;
 450         rvals->rx_mini_pending = rx_queue->rx_ring_size;
 451         rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
 452         rvals->tx_pending = tx_queue->tx_ring_size;
 453 }
 454
 455 /* Change the current ring parameters, stopping the controller if
 456  * necessary so that we don't mess things up while we're in
 457  * motion.  We wait for the ring to be clean before reallocating
 458  * the rings. */
 459 static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals)
 460 {
 461         struct gfar_private *priv = netdev_priv(dev);
 462         int err = 0, i = 0;
 463
 464         if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
 465                 return -EINVAL;
 466
 467         if (!is_power_of_2(rvals->rx_pending)) {
 468                 printk("%s: Ring sizes must be a power of 2\n",
 469                                 dev->name);
 470                 return -EINVAL;
 471         }
 472
 473         if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
 474                 return -EINVAL;
 475
 476         if (!is_power_of_2(rvals->tx_pending)) {
 477                 printk("%s: Ring sizes must be a power of 2\n",
 478                                 dev->name);
 479                 return -EINVAL;
 480         }
 481
 482
 483         if (dev->flags & IFF_UP) {
 484                 unsigned long flags;
 485
 486                 /* Halt TX and RX, and process the frames which
 487                  * have already been received */
 488                 local_irq_save(flags);
 489                 lock_tx_qs(priv);
 490                 lock_rx_qs(priv);
 491
 492                 gfar_halt(dev);
 493
 494                 unlock_rx_qs(priv);
 495                 unlock_tx_qs(priv);
 496                 local_irq_restore(flags);
 497
 498                 for (i = 0; i < priv->num_rx_queues; i++)
 499                         gfar_clean_rx_ring(priv->rx_queue[i],
 500                                         priv->rx_queue[i]->rx_ring_size);
 501
 502                 /* Now we take down the rings to rebuild them */
 503                 stop_gfar(dev);
 504         }
 505
 506         /* Change the size */
 507         for (i = 0; i < priv->num_rx_queues; i++) {
 508                 priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;
 509                 priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;
 510                 priv->tx_queue[i]->num_txbdfree = priv->tx_queue[i]->tx_ring_size;
 511         }
 512
 513         /* Rebuild the rings with the new size */
 514         if (dev->flags & IFF_UP) {
 515                 err = startup_gfar(dev);
 516                 netif_tx_wake_all_queues(dev);
 517         }
 518         return err;
 519 }
 520
 521 static int gfar_set_rx_csum(struct net_device *dev, uint32_t data)
 522 {
 523         struct gfar_private *priv = netdev_priv(dev);
 524         unsigned long flags;
 525         int err = 0, i = 0;
 526
 527         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
 528                 return -EOPNOTSUPP;
 529
 530
 531         if (dev->flags & IFF_UP) {
 532                 /* Halt TX and RX, and process the frames which
 533                  * have already been received */
 534                 local_irq_save(flags);
 535                 lock_tx_qs(priv);
 536                 lock_rx_qs(priv);
 537
 538                 gfar_halt(dev);
 539
 540                 unlock_tx_qs(priv);
 541                 unlock_rx_qs(priv);
 542                 local_irq_save(flags);
 543
 544                 for (i = 0; i < priv->num_rx_queues; i++)
 545                         gfar_clean_rx_ring(priv->rx_queue[i],
 546                                         priv->rx_queue[i]->rx_ring_size);
 547
 548                 /* Now we take down the rings to rebuild them */
 549                 stop_gfar(dev);
 550         }
 551
 552         spin_lock_irqsave(&priv->bflock, flags);
 553         priv->rx_csum_enable = data;
 554         spin_unlock_irqrestore(&priv->bflock, flags);
 555
 556         if (dev->flags & IFF_UP) {
 557                 err = startup_gfar(dev);
 558                 netif_tx_wake_all_queues(dev);
 559         }
 560         return err;
 561 }
 562
 563 static uint32_t gfar_get_rx_csum(struct net_device *dev)
 564 {
 565         struct gfar_private *priv = netdev_priv(dev);
 566
 567         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
 568                 return 0;
 569
 570         return priv->rx_csum_enable;
 571 }
 572
 573 static int gfar_set_tx_csum(struct net_device *dev, uint32_t data)
 574 {
 575         struct gfar_private *priv = netdev_priv(dev);
 576
 577         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
 578                 return -EOPNOTSUPP;
 579
 580         netif_tx_lock_bh(dev);
 581
 582         if (data)
 583                 dev->features |= NETIF_F_IP_CSUM;
 584         else
 585                 dev->features &= ~NETIF_F_IP_CSUM;
 586
 587         netif_tx_unlock_bh(dev);
 588
 589         return 0;
 590 }
 591
 592 static uint32_t gfar_get_tx_csum(struct net_device *dev)
 593 {
 594         struct gfar_private *priv = netdev_priv(dev);
 595
 596         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM))
 597                 return 0;
 598
 599         return (dev->features & NETIF_F_IP_CSUM) != 0;
 600 }
 601
 602 static uint32_t gfar_get_msglevel(struct net_device *dev)
 603 {
 604         struct gfar_private *priv = netdev_priv(dev);
 605         return priv->msg_enable;
 606 }
 607
 608 static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
 609 {
 610         struct gfar_private *priv = netdev_priv(dev);
 611         priv->msg_enable = data;
 612 }
 613
 614 #ifdef CONFIG_PM
 615 static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 616 {
 617         struct gfar_private *priv = netdev_priv(dev);
 618
 619         if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
 620                 wol->supported = WAKE_MAGIC;
 621                 wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
 622         } else {
 623                 wol->supported = wol->wolopts = 0;
 624         }
 625 }
 626
 627 static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 628 {
 629         struct gfar_private *priv = netdev_priv(dev);
 630         unsigned long flags;
 631
 632         if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
 633             wol->wolopts != 0)
 634                 return -EINVAL;
 635
 636         if (wol->wolopts & ~WAKE_MAGIC)
 637                 return -EINVAL;
 638
 639         spin_lock_irqsave(&priv->bflock, flags);
 640         priv->wol_en = wol->wolopts & WAKE_MAGIC ? 1 : 0;
 641         device_set_wakeup_enable(&dev->dev, priv->wol_en);
 642         spin_unlock_irqrestore(&priv->bflock, flags);
 643
 644         return 0;
 645 }
 646 #endif
 647
 648 static int gfar_ethflow_to_class(int flow_type, u64 *class)
 649 {
 650         switch (flow_type) {
 651         case TCP_V4_FLOW:
 652                 *class = CLASS_CODE_TCP_IPV4;
 653                 break;
 654         case UDP_V4_FLOW:
 655                 *class = CLASS_CODE_UDP_IPV4;
 656                 break;
 657         case AH_V4_FLOW:
 658         case ESP_V4_FLOW:
 659                 *class = CLASS_CODE_AH_ESP_IPV4;
 660                 break;
 661         case SCTP_V4_FLOW:
 662                 *class = CLASS_CODE_SCTP_IPV4;
 663                 break;
 664         case TCP_V6_FLOW:
 665                 *class = CLASS_CODE_TCP_IPV6;
 666                 break;
 667         case UDP_V6_FLOW:
 668                 *class = CLASS_CODE_UDP_IPV6;
 669                 break;
 670         case AH_V6_FLOW:
 671         case ESP_V6_FLOW:
 672                 *class = CLASS_CODE_AH_ESP_IPV6;
 673                 break;
 674         case SCTP_V6_FLOW:
 675                 *class = CLASS_CODE_SCTP_IPV6;
 676                 break;
 677         default:
 678                 return 0;
 679         }
 680
 681         return 1;
 682 }
 683
 684 static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
 685 {
 686         u32 fcr = 0x0, fpr = FPR_FILER_MASK;
 687
 688         if (ethflow & RXH_L2DA) {
 689                 fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
 690                         RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 691                 ftp_rqfpr[priv->cur_filer_idx] = fpr;
 692                 ftp_rqfcr[priv->cur_filer_idx] = fcr;
 693                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 694                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 695
 696                 fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
 697                                 RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
 698                 ftp_rqfpr[priv->cur_filer_idx] = fpr;
 699                 ftp_rqfcr[priv->cur_filer_idx] = fcr;
 700                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 701                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 702         }
 703
 704         if (ethflow & RXH_VLAN) {
 705                 fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 706                                 RQFCR_AND | RQFCR_HASHTBL_0;
 707                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 708                 ftp_rqfpr[priv->cur_filer_idx] = fpr;
 709                 ftp_rqfcr[priv->cur_filer_idx] = fcr;
 710                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 711         }
 712
 713         if (ethflow & RXH_IP_SRC) {
 714                 fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 715                         RQFCR_AND | RQFCR_HASHTBL_0;
 716                 ftp_rqfpr[priv->cur_filer_idx] = fpr;
 717                 ftp_rqfcr[priv->cur_filer_idx] = fcr;
 718                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 719                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 720         }
 721
 722         if (ethflow & (RXH_IP_DST)) {
 723                 fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 724                         RQFCR_AND | RQFCR_HASHTBL_0;
 725                 ftp_rqfpr[priv->cur_filer_idx] = fpr;
 726                 ftp_rqfcr[priv->cur_filer_idx] = fcr;
 727                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 728                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 729         }
 730
 731         if (ethflow & RXH_L3_PROTO) {
 732                 fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 733                         RQFCR_AND | RQFCR_HASHTBL_0;
 734                 ftp_rqfpr[priv->cur_filer_idx] = fpr;
 735                 ftp_rqfcr[priv->cur_filer_idx] = fcr;
 736                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 737                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 738         }
 739
 740         if (ethflow & RXH_L4_B_0_1) {
 741                 fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 742                         RQFCR_AND | RQFCR_HASHTBL_0;
 743                 ftp_rqfpr[priv->cur_filer_idx] = fpr;
 744                 ftp_rqfcr[priv->cur_filer_idx] = fcr;
 745                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 746                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 747         }
 748
 749         if (ethflow & RXH_L4_B_2_3) {
 750                 fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
 751                         RQFCR_AND | RQFCR_HASHTBL_0;
 752                 ftp_rqfpr[priv->cur_filer_idx] = fpr;
 753                 ftp_rqfcr[priv->cur_filer_idx] = fcr;
 754                 gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
 755                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 756         }
 757 }
 758
 759 static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow, u64 class)
 760 {
 761         unsigned int last_rule_idx = priv->cur_filer_idx;
 762         unsigned int cmp_rqfpr;
 763         unsigned int local_rqfpr[MAX_FILER_IDX + 1];
 764         unsigned int local_rqfcr[MAX_FILER_IDX + 1];
 765         int i = 0x0, k = 0x0;
 766         int j = MAX_FILER_IDX, l = 0x0;
 767
 768         switch (class) {
 769         case TCP_V4_FLOW:
 770                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
 771                 break;
 772         case UDP_V4_FLOW:
 773                 cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
 774                 break;
 775         case TCP_V6_FLOW:
 776                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
 777                 break;
 778         case UDP_V6_FLOW:
 779                 cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
 780                 break;
 781         case IPV4_FLOW:
 782                 cmp_rqfpr = RQFPR_IPV4;
 783         case IPV6_FLOW:
 784                 cmp_rqfpr = RQFPR_IPV6;
 785                 break;
 786         default:
 787                 printk(KERN_ERR "Right now this class is not supported\n");
 788                 return 0;
 789         }
 790
 791         for (i = 0; i < MAX_FILER_IDX + 1; i++) {
 792                 local_rqfpr[j] = ftp_rqfpr[i];
 793                 local_rqfcr[j] = ftp_rqfcr[i];
 794                 j--;
 795                 if ((ftp_rqfcr[i] == (RQFCR_PID_PARSE |
 796                         RQFCR_CLE |RQFCR_AND)) &&
 797                         (ftp_rqfpr[i] == cmp_rqfpr))
 798                         break;
 799         }
 800
 801         if (i == MAX_FILER_IDX + 1) {
 802                 printk(KERN_ERR "No parse rule found, ");
 803                 printk(KERN_ERR "can't create hash rules\n");
 804                 return 0;
 805         }
 806
 807         /* If a match was found, then it begins the starting of a cluster rule
 808          * if it was already programmed, we need to overwrite these rules
 809          */
 810         for (l = i+1; l < MAX_FILER_IDX; l++) {
 811                 if ((ftp_rqfcr[l] & RQFCR_CLE) &&
 812                         !(ftp_rqfcr[l] & RQFCR_AND)) {
 813                         ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
 814                                 RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
 815                         ftp_rqfpr[l] = FPR_FILER_MASK;
 816                         gfar_write_filer(priv, l, ftp_rqfcr[l], ftp_rqfpr[l]);
 817                         break;
 818                 }
 819
 820                 if (!(ftp_rqfcr[l] & RQFCR_CLE) && (ftp_rqfcr[l] & RQFCR_AND))
 821                         continue;
 822                 else {
 823                         local_rqfpr[j] = ftp_rqfpr[l];
 824                         local_rqfcr[j] = ftp_rqfcr[l];
 825                         j--;
 826                 }
 827         }
 828
 829         priv->cur_filer_idx = l - 1;
 830         last_rule_idx = l;
 831
 832         /* hash rules */
 833         ethflow_to_filer_rules(priv, ethflow);
 834
 835         /* Write back the popped out rules again */
 836         for (k = j+1; k < MAX_FILER_IDX; k++) {
 837                 ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
 838                 ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
 839                 gfar_write_filer(priv, priv->cur_filer_idx,
 840                                 local_rqfcr[k], local_rqfpr[k]);
 841                 if (!priv->cur_filer_idx)
 842                         break;
 843                 priv->cur_filer_idx = priv->cur_filer_idx - 1;
 844         }
 845
 846         return 1;
 847 }
 848
 849 static int gfar_set_hash_opts(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
 850 {
 851         u64 class;
 852
 853         if (!gfar_ethflow_to_class(cmd->flow_type, &class))
 854                 return -EINVAL;
 855
 856         if (class < CLASS_CODE_USER_PROG1 ||
 857                         class > CLASS_CODE_SCTP_IPV6)
 858                 return -EINVAL;
 859
 860         /* write the filer rules here */
 861         if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
 862                 return -1;
 863
 864         return 0;
 865 }
 866
 867 static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
 868 {
 869         struct gfar_private *priv = netdev_priv(dev);
 870         int ret = 0;
 871
 872         switch(cmd->cmd) {
 873         case ETHTOOL_SRXFH:
 874                 ret = gfar_set_hash_opts(priv, cmd);
 875                 break;
 876         default:
 877                 ret = -EINVAL;
 878         }
 879
 880         return ret;
 881 }
 882
 883 const struct ethtool_ops gfar_ethtool_ops = {
 884         .get_settings = gfar_gsettings,
 885         .set_settings = gfar_ssettings,
 886         .get_drvinfo = gfar_gdrvinfo,
 887         .get_regs_len = gfar_reglen,
 888         .get_regs = gfar_get_regs,
 889         .get_link = ethtool_op_get_link,
 890         .get_coalesce = gfar_gcoalesce,
 891         .set_coalesce = gfar_scoalesce,
 892         .get_ringparam = gfar_gringparam,
 893         .set_ringparam = gfar_sringparam,
 894         .get_strings = gfar_gstrings,
 895         .get_sset_count = gfar_sset_count,
 896         .get_ethtool_stats = gfar_fill_stats,
 897         .get_rx_csum = gfar_get_rx_csum,
 898         .get_tx_csum = gfar_get_tx_csum,
 899         .set_rx_csum = gfar_set_rx_csum,
 900         .set_tx_csum = gfar_set_tx_csum,
 901         .set_sg = ethtool_op_set_sg,
 902         .get_msglevel = gfar_get_msglevel,
 903         .set_msglevel = gfar_set_msglevel,
 904 #ifdef CONFIG_PM
 905         .get_wol = gfar_get_wol,
 906         .set_wol = gfar_set_wol,
 907 #endif
 908         .set_rxnfc = gfar_set_nfc,
 909 };