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 extern int init_flow_control_params(u32 automatic_flow_control_mode,
 112                 int rx_flow_control_enable,
 113                 int tx_flow_control_enable, u16 pause_period,
 114                 u16 extension_field, volatile u32 *upsmr_register,
 115                 volatile u32 *uempr_register, volatile u32 *maccfg1_register);
 116
 117 static int
 118 uec_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 119 {
 120         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 121         struct phy_device *phydev = ugeth->phydev;
 122         struct ucc_geth_info *ug_info = ugeth->ug_info;
 123
 124         if (!phydev)
 125                 return -ENODEV;
 126
 127         ecmd->maxtxpkt = 1;
 128         ecmd->maxrxpkt = ug_info->interruptcoalescingmaxvalue[0];
 129
 130         return phy_ethtool_gset(phydev, ecmd);
 131 }
 132
 133 static int
 134 uec_set_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
 135 {
 136         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 137         struct phy_device *phydev = ugeth->phydev;
 138
 139         if (!phydev)
 140                 return -ENODEV;
 141
 142         return phy_ethtool_sset(phydev, ecmd);
 143 }
 144
 145 static void
 146 uec_get_pauseparam(struct net_device *netdev,
 147                      struct ethtool_pauseparam *pause)
 148 {
 149         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 150
 151         pause->autoneg = ugeth->phydev->autoneg;
 152
 153         if (ugeth->ug_info->receiveFlowControl)
 154                 pause->rx_pause = 1;
 155         if (ugeth->ug_info->transmitFlowControl)
 156                 pause->tx_pause = 1;
 157 }
 158
 159 static int
 160 uec_set_pauseparam(struct net_device *netdev,
 161                      struct ethtool_pauseparam *pause)
 162 {
 163         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 164         int ret = 0;
 165
 166         ugeth->ug_info->receiveFlowControl = pause->rx_pause;
 167         ugeth->ug_info->transmitFlowControl = pause->tx_pause;
 168
 169         if (ugeth->phydev->autoneg) {
 170                 if (netif_running(netdev)) {
 171                         /* FIXME: automatically restart */
 172                         printk(KERN_INFO
 173                                 "Please re-open the interface.\n");
 174                 }
 175         } else {
 176                 struct ucc_geth_info *ug_info = ugeth->ug_info;
 177
 178                 ret = init_flow_control_params(ug_info->aufc,
 179                                         ug_info->receiveFlowControl,
 180                                         ug_info->transmitFlowControl,
 181                                         ug_info->pausePeriod,
 182                                         ug_info->extensionField,
 183                                         &ugeth->uccf->uf_regs->upsmr,
 184                                         &ugeth->ug_regs->uempr,
 185                                         &ugeth->ug_regs->maccfg1);
 186         }
 187
 188         return ret;
 189 }
 190
 191 static uint32_t
 192 uec_get_msglevel(struct net_device *netdev)
 193 {
 194         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 195         return ugeth->msg_enable;
 196 }
 197
 198 static void
 199 uec_set_msglevel(struct net_device *netdev, uint32_t data)
 200 {
 201         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 202         ugeth->msg_enable = data;
 203 }
 204
 205 static int
 206 uec_get_regs_len(struct net_device *netdev)
 207 {
 208         return sizeof(struct ucc_geth);
 209 }
 210
 211 static void
 212 uec_get_regs(struct net_device *netdev,
 213                struct ethtool_regs *regs, void *p)
 214 {
 215         int i;
 216         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 217         u32 __iomem *ug_regs = (u32 __iomem *)ugeth->ug_regs;
 218         u32 *buff = p;
 219
 220         for (i = 0; i < sizeof(struct ucc_geth) / sizeof(u32); i++)
 221                 buff[i] = in_be32(&ug_regs[i]);
 222 }
 223
 224 static void
 225 uec_get_ringparam(struct net_device *netdev,
 226                     struct ethtool_ringparam *ring)
 227 {
 228         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 229         struct ucc_geth_info *ug_info = ugeth->ug_info;
 230         int queue = 0;
 231
 232         ring->rx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 233         ring->rx_mini_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 234         ring->rx_jumbo_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 235         ring->tx_max_pending = UCC_GETH_BD_RING_SIZE_MAX;
 236
 237         ring->rx_pending = ug_info->bdRingLenRx[queue];
 238         ring->rx_mini_pending = ug_info->bdRingLenRx[queue];
 239         ring->rx_jumbo_pending = ug_info->bdRingLenRx[queue];
 240         ring->tx_pending = ug_info->bdRingLenTx[queue];
 241 }
 242
 243 static int
 244 uec_set_ringparam(struct net_device *netdev,
 245                     struct ethtool_ringparam *ring)
 246 {
 247         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 248         struct ucc_geth_info *ug_info = ugeth->ug_info;
 249         int queue = 0, ret = 0;
 250
 251         if (ring->rx_pending < UCC_GETH_RX_BD_RING_SIZE_MIN) {
 252                 printk("%s: RxBD ring size must be no smaller than %d.\n",
 253                                 netdev->name, UCC_GETH_RX_BD_RING_SIZE_MIN);
 254                 return -EINVAL;
 255         }
 256         if (ring->rx_pending % UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT) {
 257                 printk("%s: RxBD ring size must be multiple of %d.\n",
 258                         netdev->name, UCC_GETH_RX_BD_RING_SIZE_ALIGNMENT);
 259                 return -EINVAL;
 260         }
 261         if (ring->tx_pending < UCC_GETH_TX_BD_RING_SIZE_MIN) {
 262                 printk("%s: TxBD ring size must be no smaller than %d.\n",
 263                                 netdev->name, UCC_GETH_TX_BD_RING_SIZE_MIN);
 264                 return -EINVAL;
 265         }
 266
 267         ug_info->bdRingLenRx[queue] = ring->rx_pending;
 268         ug_info->bdRingLenTx[queue] = ring->tx_pending;
 269
 270         if (netif_running(netdev)) {
 271                 /* FIXME: restart automatically */
 272                 printk(KERN_INFO
 273                         "Please re-open the interface.\n");
 274         }
 275
 276         return ret;
 277 }
 278
 279 static int uec_get_sset_count(struct net_device *netdev, int sset)
 280 {
 281         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 282         u32 stats_mode = ugeth->ug_info->statisticsMode;
 283         int len = 0;
 284
 285         switch (sset) {
 286         case ETH_SS_STATS:
 287                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE)
 288                         len += UEC_HW_STATS_LEN;
 289                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX)
 290                         len += UEC_TX_FW_STATS_LEN;
 291                 if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 292                         len += UEC_RX_FW_STATS_LEN;
 293
 294                 return len;
 295
 296         default:
 297                 return -EOPNOTSUPP;
 298         }
 299 }
 300
 301 static void uec_get_strings(struct net_device *netdev, u32 stringset, u8 *buf)
 302 {
 303         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 304         u32 stats_mode = ugeth->ug_info->statisticsMode;
 305
 306         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 307                 memcpy(buf, hw_stat_gstrings, UEC_HW_STATS_LEN *
 308                                 ETH_GSTRING_LEN);
 309                 buf += UEC_HW_STATS_LEN * ETH_GSTRING_LEN;
 310         }
 311         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
 312                 memcpy(buf, tx_fw_stat_gstrings, UEC_TX_FW_STATS_LEN *
 313                                 ETH_GSTRING_LEN);
 314                 buf += UEC_TX_FW_STATS_LEN * ETH_GSTRING_LEN;
 315         }
 316         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX)
 317                 memcpy(buf, tx_fw_stat_gstrings, UEC_RX_FW_STATS_LEN *
 318                                 ETH_GSTRING_LEN);
 319 }
 320
 321 static void uec_get_ethtool_stats(struct net_device *netdev,
 322                 struct ethtool_stats *stats, uint64_t *data)
 323 {
 324         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 325         u32 stats_mode = ugeth->ug_info->statisticsMode;
 326         u32 __iomem *base;
 327         int i, j = 0;
 328
 329         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_HARDWARE) {
 330                 base = (u32 __iomem *)&ugeth->ug_regs->tx64;
 331                 for (i = 0; i < UEC_HW_STATS_LEN; i++)
 332                         data[j++] = (u64)in_be32(&base[i]);
 333         }
 334         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_TX) {
 335                 base = (u32 __iomem *)ugeth->p_tx_fw_statistics_pram;
 336                 for (i = 0; i < UEC_TX_FW_STATS_LEN; i++)
 337                         data[j++] = (u64)in_be32(&base[i]);
 338         }
 339         if (stats_mode & UCC_GETH_STATISTICS_GATHERING_MODE_FIRMWARE_RX) {
 340                 base = (u32 __iomem *)ugeth->p_rx_fw_statistics_pram;
 341                 for (i = 0; i < UEC_RX_FW_STATS_LEN; i++)
 342                         data[j++] = (u64)in_be32(&base[i]);
 343         }
 344 }
 345
 346 static int uec_nway_reset(struct net_device *netdev)
 347 {
 348         struct ucc_geth_private *ugeth = netdev_priv(netdev);
 349
 350         return phy_start_aneg(ugeth->phydev);
 351 }
 352
 353 /* Report driver information */
 354 static void
 355 uec_get_drvinfo(struct net_device *netdev,
 356                        struct ethtool_drvinfo *drvinfo)
 357 {
 358         strncpy(drvinfo->driver, DRV_NAME, 32);
 359         strncpy(drvinfo->version, DRV_VERSION, 32);
 360         strncpy(drvinfo->fw_version, "N/A", 32);
 361         strncpy(drvinfo->bus_info, "QUICC ENGINE", 32);
 362         drvinfo->eedump_len = 0;
 363         drvinfo->regdump_len = uec_get_regs_len(netdev);
 364 }
 365
 366 static const struct ethtool_ops uec_ethtool_ops = {
 367         .get_settings           = uec_get_settings,
 368         .set_settings           = uec_set_settings,
 369         .get_drvinfo            = uec_get_drvinfo,
 370         .get_regs_len           = uec_get_regs_len,
 371         .get_regs               = uec_get_regs,
 372         .get_msglevel           = uec_get_msglevel,
 373         .set_msglevel           = uec_set_msglevel,
 374         .nway_reset             = uec_nway_reset,
 375         .get_link               = ethtool_op_get_link,
 376         .get_ringparam          = uec_get_ringparam,
 377         .set_ringparam          = uec_set_ringparam,
 378         .get_pauseparam         = uec_get_pauseparam,
 379         .set_pauseparam         = uec_set_pauseparam,
 380         .set_sg                 = ethtool_op_set_sg,
 381         .get_sset_count         = uec_get_sset_count,
 382         .get_strings            = uec_get_strings,
 383         .get_ethtool_stats      = uec_get_ethtool_stats,
 384 };
 385
 386 void uec_set_ethtool_ops(struct net_device *netdev)
 387 {
 388         SET_ETHTOOL_OPS(netdev, &uec_ethtool_ops);
 389 }