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