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 #include <asm/uaccess.h>
  41
  42 #include "ucc_geth.h"
  43 #include "ucc_geth_mii.h"
  44
  45 static char hw_stat_gstrings[][ETH_GSTRING_LEN] = {
  46         "tx-64-frames",
  47         "tx-65-127-frames",
  48         "tx-128-255-frames",
  49         "rx-64-frames",
  50         "rx-65-127-frames",
  51         "rx-128-255-frames",
  52         "tx-bytes-ok",
  53         "tx-pause-frames",
  54         "tx-multicast-frames",
  55         "tx-broadcast-frames",
  56         "rx-frames",
  57         "rx-bytes-ok",
  58         "rx-bytes-all",
  59         "rx-multicast-frames",
  60         "rx-broadcast-frames",
  61         "stats-counter-carry",
  62         "stats-counter-mask",
  63         "rx-dropped-frames",
  64 };
  65
  66 static char tx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
  67         "tx-single-collision",
  68         "tx-multiple-collision",
  69         "tx-late-collsion",
  70         "tx-aborted-frames",
  71         "tx-lost-frames",
  72         "tx-carrier-sense-errors",
  73         "tx-frames-ok",
  74         "tx-excessive-differ-frames",
  75         "tx-256-511-frames",
  76         "tx-512-1023-frames",
  77         "tx-1024-1518-frames",
  78         "tx-jumbo-frames",
  79 };
  80
  81 static char rx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
  82         "rx-crc-errors",
  83         "rx-alignment-errors",
  84         "rx-in-range-length-errors",
  85         "rx-out-of-range-length-errors",
  86         "rx-too-long-frames",
  87         "rx-runt",
  88         "rx-very-long-event",
  89         "rx-symbol-errors",
  90         "rx-busy-drop-frames",
  91         "reserved",
  92         "reserved",
  93         "rx-mismatch-drop-frames",
  94         "rx-small-than-64",
  95         "rx-256-511-frames",
  96         "rx-512-1023-frames",
  97         "rx-1024-1518-frames",
  98         "rx-jumbo-frames",
  99         "rx-mac-error-loss",
 100         "rx-pause-frames",
 101         "reserved",
 102         "rx-vlan-removed",
 103         "rx-vlan-replaced",
 104         "rx-vlan-inserted",
 105         "rx-ip-checksum-errors",
 106 };
 107
 108 #define UEC_HW_STATS_LEN ARRAY_SIZE(hw_stat_gstrings)
 109 #define UEC_TX_FW_STATS_LEN ARRAY_SIZE(tx_fw_stat_gstrings)
 110 #define UEC_RX_FW_STATS_LEN ARRAY_SIZE(rx_fw_stat_gstrings)
 111
 112 static int
 113 uec_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 114 {
 115         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 116         struct phy_device *phydev = ugeth->phydev;
 117         struct ucc_geth_info *ug_info = ugeth->ug_info;
 118
 119         if (!phydev)
 120                 return -ENODEV;
 121
 122         ecmd->maxtxpkt = 1;
 123         ecmd->maxrxpkt = ug_info->interruptcoalescingmaxvalue[0];
 124
 125         return phy_ethtool_gset(phydev, ecmd);
 126 }
 127
 128 static int
 129 uec_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 130 {
 131         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 132         struct phy_device *phydev = ugeth->phydev;
 133
 134         if (!phydev)
 135                 return -ENODEV;
 136
 137         return phy_ethtool_sset(phydev, ecmd);
 138 }
 139
 140 static void
 141 uec_get_pauseparam(struct net_device *netdev,
 142                      struct ethtool_pauseparam *pause)
 143 {
 144         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 145
 146         pause->autoneg = ugeth->phydev->autoneg;
 147
 148         if (ugeth->ug_info->receiveFlowControl)
 149                 pause->rx_pause = 1;
 150         if (ugeth->ug_info->transmitFlowControl)
 151                 pause->tx_pause = 1;
 152 }
 153
 154 static int
 155 uec_set_pauseparam(struct net_device *netdev,
 156                      struct ethtool_pauseparam *pause)
 157 {
 158         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 159         int ret = 0;
 160
 161         ugeth->ug_info->receiveFlowControl = pause->rx_pause;
 162         ugeth->ug_info->transmitFlowControl = pause->tx_pause;
 163
 164         if (ugeth->phydev->autoneg) {
 165                 if (netif_running(netdev)) {
 166                         /* FIXME: automatically restart */
 167                         printk(KERN_INFO
 168                                 "Please re-open the interface.\n");
 169                 }
 170         } else {
 171                 struct ucc_geth_info *ug_info = ugeth->ug_info;
 172
 173                 ret = init_flow_control_params(ug_info->aufc,
 174                                         ug_info->receiveFlowControl,
 175                                         ug_info->transmitFlowControl,
 176                                         ug_info->pausePeriod,
 177                                         ug_info->extensionField,
 178                                         &ugeth->uccf->uf_regs->upsmr,
 179                                         &ugeth->ug_regs->uempr,
 180                                         &ugeth->ug_regs->maccfg1);
 181         }
 182
 183         return ret;
 184 }
 185
 186 static uint32_t
 187 uec_get_msglevel(struct net_device *netdev)
 188 {
 189         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 190         return ugeth->msg_enable;
 191 }
 192
 193 static void
 194 uec_set_msglevel(struct net_device *netdev, uint32_t data)
 195 {
 196         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 197         ugeth->msg_enable = data;
 198 }
 199
 200 static int
 201 uec_get_regs_len(struct net_device *netdev)
 202 {
 203         return sizeof(struct ucc_geth);
 204 }
 205
 206 static void
 207 uec_get_regs(struct net_device *netdev,
 208                struct ethtool_regs *regs, void *p)
 209 {
 210         int i;
 211         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 212         u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
 213         u32 *buff = p;
 214
 215         for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
 216                 buff[i] = in_be32(&ug_regs[i]);
 217 }
 218
 219 static void
 220 uec_get_ringparam(struct net_device *netdev,
 221                     struct ethtool_ringparam *ring)
 222 {
 223         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 224         struct ucc_geth_info *ug_info = ugeth->ug_info;
 225         int queue = 0;
 226
 227         ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 228         ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 229         ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 230         ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 231
 232         ring->rx_pending = ug_info->bdRingLenRx[queue];
 233         ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
 234         ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
 235         ring->tx_pending = ug_info->bdRingLenTx[queue];
 236 }
 237
 238 static int
 239 uec_set_ringparam(struct net_device *netdev,
 240                     struct ethtool_ringparam *ring)
 241 {
 242         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 243         struct ucc_geth_info *ug_info = ugeth->ug_info;
 244         int queue = 0, ret = 0;
 245
 246         if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
 247                 printk("%s: RxBD ring size must be no smaller than %d.\n",
 248                                 netdev->name, UCC_GETH_RX_BD_RING_SIZE_MIN);
 249                 return -EINVAL;
 250         }
 251         if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
 252                 printk("%s: RxBD ring size must be multiple of %d.\n",
 253                         netdev->name, UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
 254                 return -EINVAL;
 255         }
 256         if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
 257                 printk("%s: TxBD ring size must be no smaller than %d.\n",
 258                                 netdev->name, UCC_GETH_TX_BD_RING_SIZE_MIN);
 259                 return -EINVAL;
 260         }
 261
 262         ug_info->bdRingLenRx[queue] = ring->rx_pending;
 263         ug_info->bdRingLenTx[queue] = ring->tx_pending;
 264
 265         if (netif_running(netdev)) {
 266                 /* FIXME: restart automatically */
 267                 printk(KERN_INFO
 268                         "Please re-open the interface.\n");
 269         }
 270
 271         return ret;
 272 }
 273
 274 static int uec_get_sset_count(struct net_device *netdev, int sset)
 275 {
 276         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 277         u32 stats_mode = ugeth->ug_info->statisticsMode;
 278         int len = 0;
 279
 280         switch (sset) {
 281         case ETH_SS_STATS:
 282                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
 283                         len += UEC_HW_STATS_LEN;
 284                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
 285                         len += UEC_TX_FW_STATS_LEN;
 286                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 287                         len += UEC_RX_FW_STATS_LEN;
 288
 289                 return len;
 290
 291         default:
 292                 return -EOPNOTSUPP;
 293         }
 294 }
 295
 296 static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
 297 {
 298         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 299         u32 stats_mode = ugeth->ug_info->statisticsMode;
 300
 301         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 302                 memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
 303                                 ETH_GSTRING_LEN);
 304                 buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
 305         }
 306         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
 307                 memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
 308                                 ETH_GSTRING_LEN);
 309                 buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
 310         }
 311         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 312                 memcpy(buf, rx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
 313                                 ETH_GSTRING_LEN);
 314 }
 315
 316 static void uec_get_ethtool_stats(struct net_device *netdev,
 317                 struct ethtool_stats *stats, uint64_t *data)
 318 {
 319         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 320         u32 stats_mode = ugeth->ug_info->statisticsMode;
 321         u32 __iomem *base;
 322         int i, j = 0;
 323
 324         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 325                 base = (u32 __iomem *)&ugeth->ug_regs->tx64;
 326                 for (i = 0; i < UEC_HW_STATS_LEN; i++)
 327                         data[j++] = (u64)in_be32(&base[i]);
 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++] = (u64)in_be32(&base[i]);
 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++] = (u64)in_be32(&base[i]);
 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 static const struct ethtool_ops uec_ethtool_ops = {
 362         .get_settings           = uec_get_settings,
 363         .set_settings           = uec_set_settings,
 364         .get_drvinfo            = uec_get_drvinfo,
 365         .get_regs_len           = uec_get_regs_len,
 366         .get_regs               = uec_get_regs,
 367         .get_msglevel           = uec_get_msglevel,
 368         .set_msglevel           = uec_set_msglevel,
 369         .nway_reset             = uec_nway_reset,
 370         .get_link               = ethtool_op_get_link,
 371         .get_ringparam          = uec_get_ringparam,
 372         .set_ringparam          = uec_set_ringparam,
 373         .get_pauseparam         = uec_get_pauseparam,
 374         .set_pauseparam         = uec_set_pauseparam,
 375         .set_sg                 = ethtool_op_set_sg,
 376         .get_sset_count         = uec_get_sset_count,
 377         .get_strings            = uec_get_strings,
 378         .get_ethtool_stats      = uec_get_ethtool_stats,
 379 };
 380
 381 void uec_set_ethtool_ops(struct net_device *netdev)
 382 {
 383         SET_ETHTOOL_OPS(netdev, &uec_ethtool_ops);
 384 }