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-1024-1518-frames",
  77         "tx-jumbo-frames",
  78 };
  79
  80 static char rx_fw_stat_gstrings[][ETH_GSTRING_LEN] = {
  81         "rx-crc-errors",
  82         "rx-alignment-errors",
  83         "rx-in-range-length-errors",
  84         "rx-out-of-range-length-errors",
  85         "rx-too-long-frames",
  86         "rx-runt",
  87         "rx-very-long-event",
  88         "rx-symbol-errors",
  89         "rx-busy-drop-frames",
  90         "reserved",
  91         "reserved",
  92         "rx-mismatch-drop-frames",
  93         "rx-small-than-64",
  94         "rx-256-511-frames",
  95         "rx-512-1023-frames",
  96         "rx-1024-1518-frames",
  97         "rx-jumbo-frames",
  98         "rx-mac-error-loss",
  99         "rx-pause-frames",
 100         "reserved",
 101         "rx-vlan-removed",
 102         "rx-vlan-replaced",
 103         "rx-vlan-inserted",
 104         "rx-ip-checksum-errors",
 105 };
 106
 107 #define UEC_HW_STATS_LEN ARRAY_SIZE(hw_stat_gstrings)
 108 #define UEC_TX_FW_STATS_LEN ARRAY_SIZE(tx_fw_stat_gstrings)
 109 #define UEC_RX_FW_STATS_LEN ARRAY_SIZE(rx_fw_stat_gstrings)
 110
 111 static int
 112 uec_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 113 {
 114         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 115         struct phy_device *phydev = ugeth->phydev;
 116         struct ucc_geth_info *ug_info = ugeth->ug_info;
 117
 118         if (!phydev)
 119                 return -ENODEV;
 120
 121         ecmd->maxtxpkt = 1;
 122         ecmd->maxrxpkt = ug_info->interruptcoalescingmaxvalue[0];
 123
 124         return phy_ethtool_gset(phydev, ecmd);
 125 }
 126
 127 static int
 128 uec_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 129 {
 130         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 131         struct phy_device *phydev = ugeth->phydev;
 132
 133         if (!phydev)
 134                 return -ENODEV;
 135
 136         return phy_ethtool_sset(phydev, ecmd);
 137 }
 138
 139 static void
 140 uec_get_pauseparam(struct net_device *netdev,
 141                      struct ethtool_pauseparam *pause)
 142 {
 143         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 144
 145         pause->autoneg = ugeth->phydev->autoneg;
 146
 147         if (ugeth->ug_info->receiveFlowControl)
 148                 pause->rx_pause = 1;
 149         if (ugeth->ug_info->transmitFlowControl)
 150                 pause->tx_pause = 1;
 151 }
 152
 153 static int
 154 uec_set_pauseparam(struct net_device *netdev,
 155                      struct ethtool_pauseparam *pause)
 156 {
 157         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 158         int ret = 0;
 159
 160         ugeth->ug_info->receiveFlowControl = pause->rx_pause;
 161         ugeth->ug_info->transmitFlowControl = pause->tx_pause;
 162
 163         if (ugeth->phydev->autoneg) {
 164                 if (netif_running(netdev)) {
 165                         /* FIXME: automatically restart */
 166                         printk(KERN_INFO
 167                                 "Please re-open the interface.\n");
 168                 }
 169         } else {
 170                 struct ucc_geth_info *ug_info = ugeth->ug_info;
 171
 172                 ret = init_flow_control_params(ug_info->aufc,
 173                                         ug_info->receiveFlowControl,
 174                                         ug_info->transmitFlowControl,
 175                                         ug_info->pausePeriod,
 176                                         ug_info->extensionField,
 177                                         &ugeth->uccf->uf_regs->upsmr,
 178                                         &ugeth->ug_regs->uempr,
 179                                         &ugeth->ug_regs->maccfg1);
 180         }
 181
 182         return ret;
 183 }
 184
 185 static uint32_t
 186 uec_get_msglevel(struct net_device *netdev)
 187 {
 188         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 189         return ugeth->msg_enable;
 190 }
 191
 192 static void
 193 uec_set_msglevel(struct net_device *netdev, uint32_t data)
 194 {
 195         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 196         ugeth->msg_enable = data;
 197 }
 198
 199 static int
 200 uec_get_regs_len(struct net_device *netdev)
 201 {
 202         return sizeof(struct ucc_geth);
 203 }
 204
 205 static void
 206 uec_get_regs(struct net_device *netdev,
 207                struct ethtool_regs *regs, void *p)
 208 {
 209         int i;
 210         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 211         u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
 212         u32 *buff = p;
 213
 214         for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
 215                 buff[i] = in_be32(&ug_regs[i]);
 216 }
 217
 218 static void
 219 uec_get_ringparam(struct net_device *netdev,
 220                     struct ethtool_ringparam *ring)
 221 {
 222         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 223         struct ucc_geth_info *ug_info = ugeth->ug_info;
 224         int queue = 0;
 225
 226         ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 227         ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 228         ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 229         ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 230
 231         ring->rx_pending = ug_info->bdRingLenRx[queue];
 232         ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
 233         ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
 234         ring->tx_pending = ug_info->bdRingLenTx[queue];
 235 }
 236
 237 static int
 238 uec_set_ringparam(struct net_device *netdev,
 239                     struct ethtool_ringparam *ring)
 240 {
 241         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 242         struct ucc_geth_info *ug_info = ugeth->ug_info;
 243         int queue = 0, ret = 0;
 244
 245         if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
 246                 printk("%s: RxBD ring size must be no smaller than %d.\n",
 247                                 netdev->name, UCC_GETH_RX_BD_RING_SIZE_MIN);
 248                 return -EINVAL;
 249         }
 250         if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
 251                 printk("%s: RxBD ring size must be multiple of %d.\n",
 252                         netdev->name, UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
 253                 return -EINVAL;
 254         }
 255         if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
 256                 printk("%s: TxBD ring size must be no smaller than %d.\n",
 257                                 netdev->name, UCC_GETH_TX_BD_RING_SIZE_MIN);
 258                 return -EINVAL;
 259         }
 260
 261         ug_info->bdRingLenRx[queue] = ring->rx_pending;
 262         ug_info->bdRingLenTx[queue] = ring->tx_pending;
 263
 264         if (netif_running(netdev)) {
 265                 /* FIXME: restart automatically */
 266                 printk(KERN_INFO
 267                         "Please re-open the interface.\n");
 268         }
 269
 270         return ret;
 271 }
 272
 273 static int uec_get_sset_count(struct net_device *netdev, int sset)
 274 {
 275         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 276         u32 stats_mode = ugeth->ug_info->statisticsMode;
 277         int len = 0;
 278
 279         switch (sset) {
 280         case ETH_SS_STATS:
 281                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
 282                         len += UEC_HW_STATS_LEN;
 283                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
 284                         len += UEC_TX_FW_STATS_LEN;
 285                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 286                         len += UEC_RX_FW_STATS_LEN;
 287
 288                 return len;
 289
 290         default:
 291                 return -EOPNOTSUPP;
 292         }
 293 }
 294
 295 static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
 296 {
 297         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 298         u32 stats_mode = ugeth->ug_info->statisticsMode;
 299
 300         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 301                 memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
 302                                 ETH_GSTRING_LEN);
 303                 buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
 304         }
 305         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
 306                 memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
 307                                 ETH_GSTRING_LEN);
 308                 buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
 309         }
 310         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 311                 memcpy(buf, tx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
 312                                 ETH_GSTRING_LEN);
 313 }
 314
 315 static void uec_get_ethtool_stats(struct net_device *netdev,
 316                 struct ethtool_stats *stats, uint64_t *data)
 317 {
 318         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 319         u32 stats_mode = ugeth->ug_info->statisticsMode;
 320         u32 __iomem *base;
 321         int i, j = 0;
 322
 323         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 324                 base = (u32 __iomem *)&ugeth->ug_regs->tx64;
 325                 for (i = 0; i < UEC_HW_STATS_LEN; i++)
 326                         data[j++] = (u64)in_be32(&base[i]);
 327         }
 328         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
 329                 base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
 330                 for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
 331                         data[j++] = (u64)in_be32(&base[i]);
 332         }
 333         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
 334                 base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
 335                 for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
 336                         data[j++] = (u64)in_be32(&base[i]);
 337         }
 338 }
 339
 340 static int uec_nway_reset(struct net_device *netdev)
 341 {
 342         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 343
 344         return phy_start_aneg(ugeth->phydev);
 345 }
 346
 347 /* Report driver information */
 348 static void
 349 uec_get_drvinfo(struct net_device *netdev,
 350                        struct ethtool_drvinfo *drvinfo)
 351 {
 352         strncpy(drvinfo->driver, DRV_NAME, 32);
 353         strncpy(drvinfo->version, DRV_VERSION, 32);
 354         strncpy(drvinfo->fw_version, "N/A", 32);
 355         strncpy(drvinfo->bus_info, "QUICC ENGINE", 32);
 356         drvinfo->eedump_len = 0;
 357         drvinfo->regdump_len = uec_get_regs_len(netdev);
 358 }
 359
 360 static const struct ethtool_ops uec_ethtool_ops = {
 361         .get_settings           = uec_get_settings,
 362         .set_settings           = uec_set_settings,
 363         .get_drvinfo            = uec_get_drvinfo,
 364         .get_regs_len           = uec_get_regs_len,
 365         .get_regs               = uec_get_regs,
 366         .get_msglevel           = uec_get_msglevel,
 367         .set_msglevel           = uec_set_msglevel,
 368         .nway_reset             = uec_nway_reset,
 369         .get_link               = ethtool_op_get_link,
 370         .get_ringparam          = uec_get_ringparam,
 371         .set_ringparam          = uec_set_ringparam,
 372         .get_pauseparam         = uec_get_pauseparam,
 373         .set_pauseparam         = uec_set_pauseparam,
 374         .set_sg                 = ethtool_op_set_sg,
 375         .get_sset_count         = uec_get_sset_count,
 376         .get_strings            = uec_get_strings,
 377         .get_ethtool_stats      = uec_get_ethtool_stats,
 378 };
 379
 380 void uec_set_ethtool_ops(struct net_device *netdev)
 381 {
 382         SET_ETHTOOL_OPS(netdev, &uec_ethtool_ops);
 383 }