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