LXR linux/include/linux/mdio.h

   1/*
   2 * linux/mdio.h: definitions for MDIO (clause 45) transceivers
   3 * Copyright 2006-2009 Solarflare Communications Inc.
   4 *
   5 * This program is free software; you can redistribute it and/or modify it
   6 * under the terms of the GNU General Public License version 2 as published
   7 * by the Free Software Foundation, incorporated herein by reference.
   8 */
   9
  10#ifndef __LINUX_MDIO_H__
  11#define __LINUX_MDIO_H__
  12
  13#include <linux/mii.h>
  14
  15/* MDIO Manageable Devices (MMDs). */
  16#define MDIO_MMD_PMAPMD         1       /* Physical Medium Attachment/
  17                                         * Physical Medium Dependent */
  18#define MDIO_MMD_WIS            2       /* WAN Interface Sublayer */
  19#define MDIO_MMD_PCS            3       /* Physical Coding Sublayer */
  20#define MDIO_MMD_PHYXS          4       /* PHY Extender Sublayer */
  21#define MDIO_MMD_DTEXS          5       /* DTE Extender Sublayer */
  22#define MDIO_MMD_TC             6       /* Transmission Convergence */
  23#define MDIO_MMD_AN             7       /* Auto-Negotiation */
  24#define MDIO_MMD_C22EXT         29      /* Clause 22 extension */
  25#define MDIO_MMD_VEND1          30      /* Vendor specific 1 */
  26#define MDIO_MMD_VEND2          31      /* Vendor specific 2 */
  27
  28/* Generic MDIO registers. */
  29#define MDIO_CTRL1              MII_BMCR
  30#define MDIO_STAT1              MII_BMSR
  31#define MDIO_DEVID1             MII_PHYSID1
  32#define MDIO_DEVID2             MII_PHYSID2
  33#define MDIO_SPEED              4       /* Speed ability */
  34#define MDIO_DEVS1              5       /* Devices in package */
  35#define MDIO_DEVS2              6
  36#define MDIO_CTRL2              7       /* 10G control 2 */
  37#define MDIO_STAT2              8       /* 10G status 2 */
  38#define MDIO_PMA_TXDIS          9       /* 10G PMA/PMD transmit disable */
  39#define MDIO_PMA_RXDET          10      /* 10G PMA/PMD receive signal detect */
  40#define MDIO_PMA_EXTABLE        11      /* 10G PMA/PMD extended ability */
  41#define MDIO_PKGID1             14      /* Package identifier */
  42#define MDIO_PKGID2             15
  43#define MDIO_AN_ADVERTISE       16      /* AN advertising (base page) */
  44#define MDIO_AN_LPA             19      /* AN LP abilities (base page) */
  45#define MDIO_PHYXS_LNSTAT       24      /* PHY XGXS lane state */
  46
  47/* Media-dependent registers. */
  48#define MDIO_PMA_10GBT_SWAPPOL  130     /* 10GBASE-T pair swap & polarity */
  49#define MDIO_PMA_10GBT_TXPWR    131     /* 10GBASE-T TX power control */
  50#define MDIO_PMA_10GBT_SNR      133     /* 10GBASE-T SNR margin, lane A.
  51                                         * Lanes B-D are numbered 134-136. */
  52#define MDIO_PMA_10GBR_FECABLE  170     /* 10GBASE-R FEC ability */
  53#define MDIO_PCS_10GBX_STAT1    24      /* 10GBASE-X PCS status 1 */
  54#define MDIO_PCS_10GBRT_STAT1   32      /* 10GBASE-R/-T PCS status 1 */
  55#define MDIO_PCS_10GBRT_STAT2   33      /* 10GBASE-R/-T PCS status 2 */
  56#define MDIO_AN_10GBT_CTRL      32      /* 10GBASE-T auto-negotiation control */
  57#define MDIO_AN_10GBT_STAT      33      /* 10GBASE-T auto-negotiation status */
  58
  59/* LASI (Link Alarm Status Interrupt) registers, defined by XENPAK MSA. */
  60#define MDIO_PMA_LASI_RXCTRL    0x9000  /* RX_ALARM control */
  61#define MDIO_PMA_LASI_TXCTRL    0x9001  /* TX_ALARM control */
  62#define MDIO_PMA_LASI_CTRL      0x9002  /* LASI control */
  63#define MDIO_PMA_LASI_RXSTAT    0x9003  /* RX_ALARM status */
  64#define MDIO_PMA_LASI_TXSTAT    0x9004  /* TX_ALARM status */
  65#define MDIO_PMA_LASI_STAT      0x9005  /* LASI status */
  66
  67/* Control register 1. */
  68/* Enable extended speed selection */
  69#define MDIO_CTRL1_SPEEDSELEXT          (BMCR_SPEED1000 | BMCR_SPEED100)
  70/* All speed selection bits */
  71#define MDIO_CTRL1_SPEEDSEL             (MDIO_CTRL1_SPEEDSELEXT | 0x003c)
  72#define MDIO_CTRL1_FULLDPLX             BMCR_FULLDPLX
  73#define MDIO_CTRL1_LPOWER               BMCR_PDOWN
  74#define MDIO_CTRL1_RESET                BMCR_RESET
  75#define MDIO_PMA_CTRL1_LOOPBACK         0x0001
  76#define MDIO_PMA_CTRL1_SPEED1000        BMCR_SPEED1000
  77#define MDIO_PMA_CTRL1_SPEED100         BMCR_SPEED100
  78#define MDIO_PCS_CTRL1_LOOPBACK         BMCR_LOOPBACK
  79#define MDIO_PHYXS_CTRL1_LOOPBACK       BMCR_LOOPBACK
  80#define MDIO_AN_CTRL1_RESTART           BMCR_ANRESTART
  81#define MDIO_AN_CTRL1_ENABLE            BMCR_ANENABLE
  82#define MDIO_AN_CTRL1_XNP               0x2000  /* Enable extended next page */
  83
  84/* 10 Gb/s */
  85#define MDIO_CTRL1_SPEED10G             (MDIO_CTRL1_SPEEDSELEXT | 0x00)
  86/* 10PASS-TS/2BASE-TL */
  87#define MDIO_CTRL1_SPEED10P2B           (MDIO_CTRL1_SPEEDSELEXT | 0x04)
  88
  89/* Status register 1. */
  90#define MDIO_STAT1_LPOWERABLE           0x0002  /* Low-power ability */
  91#define MDIO_STAT1_LSTATUS              BMSR_LSTATUS
  92#define MDIO_STAT1_FAULT                0x0080  /* Fault */
  93#define MDIO_AN_STAT1_LPABLE            0x0001  /* Link partner AN ability */
  94#define MDIO_AN_STAT1_ABLE              BMSR_ANEGCAPABLE
  95#define MDIO_AN_STAT1_RFAULT            BMSR_RFAULT
  96#define MDIO_AN_STAT1_COMPLETE          BMSR_ANEGCOMPLETE
  97#define MDIO_AN_STAT1_PAGE              0x0040  /* Page received */
  98#define MDIO_AN_STAT1_XNP               0x0080  /* Extended next page status */
  99
 100/* Speed register. */
 101#define MDIO_SPEED_10G                  0x0001  /* 10G capable */
 102#define MDIO_PMA_SPEED_2B               0x0002  /* 2BASE-TL capable */
 103#define MDIO_PMA_SPEED_10P              0x0004  /* 10PASS-TS capable */
 104#define MDIO_PMA_SPEED_1000             0x0010  /* 1000M capable */
 105#define MDIO_PMA_SPEED_100              0x0020  /* 100M capable */
 106#define MDIO_PMA_SPEED_10               0x0040  /* 10M capable */
 107#define MDIO_PCS_SPEED_10P2B            0x0002  /* 10PASS-TS/2BASE-TL capable */
 108
 109/* Device present registers. */
 110#define MDIO_DEVS_PRESENT(devad)        (1 << (devad))
 111#define MDIO_DEVS_PMAPMD                MDIO_DEVS_PRESENT(MDIO_MMD_PMAPMD)
 112#define MDIO_DEVS_WIS                   MDIO_DEVS_PRESENT(MDIO_MMD_WIS)
 113#define MDIO_DEVS_PCS                   MDIO_DEVS_PRESENT(MDIO_MMD_PCS)
 114#define MDIO_DEVS_PHYXS                 MDIO_DEVS_PRESENT(MDIO_MMD_PHYXS)
 115#define MDIO_DEVS_DTEXS                 MDIO_DEVS_PRESENT(MDIO_MMD_DTEXS)
 116#define MDIO_DEVS_TC                    MDIO_DEVS_PRESENT(MDIO_MMD_TC)
 117#define MDIO_DEVS_AN                    MDIO_DEVS_PRESENT(MDIO_MMD_AN)
 118#define MDIO_DEVS_C22EXT                MDIO_DEVS_PRESENT(MDIO_MMD_C22EXT)
 119
 120/* Control register 2. */
 121#define MDIO_PMA_CTRL2_TYPE             0x000f  /* PMA/PMD type selection */
 122#define MDIO_PMA_CTRL2_10GBCX4          0x0000  /* 10GBASE-CX4 type */
 123#define MDIO_PMA_CTRL2_10GBEW           0x0001  /* 10GBASE-EW type */
 124#define MDIO_PMA_CTRL2_10GBLW           0x0002  /* 10GBASE-LW type */
 125#define MDIO_PMA_CTRL2_10GBSW           0x0003  /* 10GBASE-SW type */
 126#define MDIO_PMA_CTRL2_10GBLX4          0x0004  /* 10GBASE-LX4 type */
 127#define MDIO_PMA_CTRL2_10GBER           0x0005  /* 10GBASE-ER type */
 128#define MDIO_PMA_CTRL2_10GBLR           0x0006  /* 10GBASE-LR type */
 129#define MDIO_PMA_CTRL2_10GBSR           0x0007  /* 10GBASE-SR type */
 130#define MDIO_PMA_CTRL2_10GBLRM          0x0008  /* 10GBASE-LRM type */
 131#define MDIO_PMA_CTRL2_10GBT            0x0009  /* 10GBASE-T type */
 132#define MDIO_PMA_CTRL2_10GBKX4          0x000a  /* 10GBASE-KX4 type */
 133#define MDIO_PMA_CTRL2_10GBKR           0x000b  /* 10GBASE-KR type */
 134#define MDIO_PMA_CTRL2_1000BT           0x000c  /* 1000BASE-T type */
 135#define MDIO_PMA_CTRL2_1000BKX          0x000d  /* 1000BASE-KX type */
 136#define MDIO_PMA_CTRL2_100BTX           0x000e  /* 100BASE-TX type */
 137#define MDIO_PMA_CTRL2_10BT             0x000f  /* 10BASE-T type */
 138#define MDIO_PCS_CTRL2_TYPE             0x0003  /* PCS type selection */
 139#define MDIO_PCS_CTRL2_10GBR            0x0000  /* 10GBASE-R type */
 140#define MDIO_PCS_CTRL2_10GBX            0x0001  /* 10GBASE-X type */
 141#define MDIO_PCS_CTRL2_10GBW            0x0002  /* 10GBASE-W type */
 142#define MDIO_PCS_CTRL2_10GBT            0x0003  /* 10GBASE-T type */
 143
 144/* Status register 2. */
 145#define MDIO_STAT2_RXFAULT              0x0400  /* Receive fault */
 146#define MDIO_STAT2_TXFAULT              0x0800  /* Transmit fault */
 147#define MDIO_STAT2_DEVPRST              0xc000  /* Device present */
 148#define MDIO_STAT2_DEVPRST_VAL          0x8000  /* Device present value */
 149#define MDIO_PMA_STAT2_LBABLE           0x0001  /* PMA loopback ability */
 150#define MDIO_PMA_STAT2_10GBEW           0x0002  /* 10GBASE-EW ability */
 151#define MDIO_PMA_STAT2_10GBLW           0x0004  /* 10GBASE-LW ability */
 152#define MDIO_PMA_STAT2_10GBSW           0x0008  /* 10GBASE-SW ability */
 153#define MDIO_PMA_STAT2_10GBLX4          0x0010  /* 10GBASE-LX4 ability */
 154#define MDIO_PMA_STAT2_10GBER           0x0020  /* 10GBASE-ER ability */
 155#define MDIO_PMA_STAT2_10GBLR           0x0040  /* 10GBASE-LR ability */
 156#define MDIO_PMA_STAT2_10GBSR           0x0080  /* 10GBASE-SR ability */
 157#define MDIO_PMD_STAT2_TXDISAB          0x0100  /* PMD TX disable ability */
 158#define MDIO_PMA_STAT2_EXTABLE          0x0200  /* Extended abilities */
 159#define MDIO_PMA_STAT2_RXFLTABLE        0x1000  /* Receive fault ability */
 160#define MDIO_PMA_STAT2_TXFLTABLE        0x2000  /* Transmit fault ability */
 161#define MDIO_PCS_STAT2_10GBR            0x0001  /* 10GBASE-R capable */
 162#define MDIO_PCS_STAT2_10GBX            0x0002  /* 10GBASE-X capable */
 163#define MDIO_PCS_STAT2_10GBW            0x0004  /* 10GBASE-W capable */
 164#define MDIO_PCS_STAT2_RXFLTABLE        0x1000  /* Receive fault ability */
 165#define MDIO_PCS_STAT2_TXFLTABLE        0x2000  /* Transmit fault ability */
 166
 167/* Transmit disable register. */
 168#define MDIO_PMD_TXDIS_GLOBAL           0x0001  /* Global PMD TX disable */
 169#define MDIO_PMD_TXDIS_0                0x0002  /* PMD TX disable 0 */
 170#define MDIO_PMD_TXDIS_1                0x0004  /* PMD TX disable 1 */
 171#define MDIO_PMD_TXDIS_2                0x0008  /* PMD TX disable 2 */
 172#define MDIO_PMD_TXDIS_3                0x0010  /* PMD TX disable 3 */
 173
 174/* Receive signal detect register. */
 175#define MDIO_PMD_RXDET_GLOBAL           0x0001  /* Global PMD RX signal detect */
 176#define MDIO_PMD_RXDET_0                0x0002  /* PMD RX signal detect 0 */
 177#define MDIO_PMD_RXDET_1                0x0004  /* PMD RX signal detect 1 */
 178#define MDIO_PMD_RXDET_2                0x0008  /* PMD RX signal detect 2 */
 179#define MDIO_PMD_RXDET_3                0x0010  /* PMD RX signal detect 3 */
 180
 181/* Extended abilities register. */
 182#define MDIO_PMA_EXTABLE_10GCX4         0x0001  /* 10GBASE-CX4 ability */
 183#define MDIO_PMA_EXTABLE_10GBLRM        0x0002  /* 10GBASE-LRM ability */
 184#define MDIO_PMA_EXTABLE_10GBT          0x0004  /* 10GBASE-T ability */
 185#define MDIO_PMA_EXTABLE_10GBKX4        0x0008  /* 10GBASE-KX4 ability */
 186#define MDIO_PMA_EXTABLE_10GBKR         0x0010  /* 10GBASE-KR ability */
 187#define MDIO_PMA_EXTABLE_1000BT         0x0020  /* 1000BASE-T ability */
 188#define MDIO_PMA_EXTABLE_1000BKX        0x0040  /* 1000BASE-KX ability */
 189#define MDIO_PMA_EXTABLE_100BTX         0x0080  /* 100BASE-TX ability */
 190#define MDIO_PMA_EXTABLE_10BT           0x0100  /* 10BASE-T ability */
 191
 192/* PHY XGXS lane state register. */
 193#define MDIO_PHYXS_LNSTAT_SYNC0         0x0001
 194#define MDIO_PHYXS_LNSTAT_SYNC1         0x0002
 195#define MDIO_PHYXS_LNSTAT_SYNC2         0x0004
 196#define MDIO_PHYXS_LNSTAT_SYNC3         0x0008
 197#define MDIO_PHYXS_LNSTAT_ALIGN         0x1000
 198
 199/* PMA 10GBASE-T pair swap & polarity */
 200#define MDIO_PMA_10GBT_SWAPPOL_ABNX     0x0001  /* Pair A/B uncrossed */
 201#define MDIO_PMA_10GBT_SWAPPOL_CDNX     0x0002  /* Pair C/D uncrossed */
 202#define MDIO_PMA_10GBT_SWAPPOL_AREV     0x0100  /* Pair A polarity reversed */
 203#define MDIO_PMA_10GBT_SWAPPOL_BREV     0x0200  /* Pair B polarity reversed */
 204#define MDIO_PMA_10GBT_SWAPPOL_CREV     0x0400  /* Pair C polarity reversed */
 205#define MDIO_PMA_10GBT_SWAPPOL_DREV     0x0800  /* Pair D polarity reversed */
 206
 207/* PMA 10GBASE-T TX power register. */
 208#define MDIO_PMA_10GBT_TXPWR_SHORT      0x0001  /* Short-reach mode */
 209
 210/* PMA 10GBASE-T SNR registers. */
 211/* Value is SNR margin in dB, clamped to range [-127, 127], plus 0x8000. */
 212#define MDIO_PMA_10GBT_SNR_BIAS         0x8000
 213#define MDIO_PMA_10GBT_SNR_MAX          127
 214
 215/* PMA 10GBASE-R FEC ability register. */
 216#define MDIO_PMA_10GBR_FECABLE_ABLE     0x0001  /* FEC ability */
 217#define MDIO_PMA_10GBR_FECABLE_ERRABLE  0x0002  /* FEC error indic. ability */
 218
 219/* PCS 10GBASE-R/-T status register 1. */
 220#define MDIO_PCS_10GBRT_STAT1_BLKLK     0x0001  /* Block lock attained */
 221
 222/* PCS 10GBASE-R/-T status register 2. */
 223#define MDIO_PCS_10GBRT_STAT2_ERR       0x00ff
 224#define MDIO_PCS_10GBRT_STAT2_BER       0x3f00
 225
 226/* AN 10GBASE-T control register. */
 227#define MDIO_AN_10GBT_CTRL_ADV10G       0x1000  /* Advertise 10GBASE-T */
 228
 229/* AN 10GBASE-T status register. */
 230#define MDIO_AN_10GBT_STAT_LPTRR        0x0200  /* LP training reset req. */
 231#define MDIO_AN_10GBT_STAT_LPLTABLE     0x0400  /* LP loop timing ability */
 232#define MDIO_AN_10GBT_STAT_LP10G        0x0800  /* LP is 10GBT capable */
 233#define MDIO_AN_10GBT_STAT_REMOK        0x1000  /* Remote OK */
 234#define MDIO_AN_10GBT_STAT_LOCOK        0x2000  /* Local OK */
 235#define MDIO_AN_10GBT_STAT_MS           0x4000  /* Master/slave config */
 236#define MDIO_AN_10GBT_STAT_MSFLT        0x8000  /* Master/slave config fault */
 237
 238/* LASI RX_ALARM control/status registers. */
 239#define MDIO_PMA_LASI_RX_PHYXSLFLT      0x0001  /* PHY XS RX local fault */
 240#define MDIO_PMA_LASI_RX_PCSLFLT        0x0008  /* PCS RX local fault */
 241#define MDIO_PMA_LASI_RX_PMALFLT        0x0010  /* PMA/PMD RX local fault */
 242#define MDIO_PMA_LASI_RX_OPTICPOWERFLT  0x0020  /* RX optical power fault */
 243#define MDIO_PMA_LASI_RX_WISLFLT        0x0200  /* WIS local fault */
 244
 245/* LASI TX_ALARM control/status registers. */
 246#define MDIO_PMA_LASI_TX_PHYXSLFLT      0x0001  /* PHY XS TX local fault */
 247#define MDIO_PMA_LASI_TX_PCSLFLT        0x0008  /* PCS TX local fault */
 248#define MDIO_PMA_LASI_TX_PMALFLT        0x0010  /* PMA/PMD TX local fault */
 249#define MDIO_PMA_LASI_TX_LASERPOWERFLT  0x0080  /* Laser output power fault */
 250#define MDIO_PMA_LASI_TX_LASERTEMPFLT   0x0100  /* Laser temperature fault */
 251#define MDIO_PMA_LASI_TX_LASERBICURRFLT 0x0200  /* Laser bias current fault */
 252
 253/* LASI control/status registers. */
 254#define MDIO_PMA_LASI_LSALARM           0x0001  /* LS_ALARM enable/status */
 255#define MDIO_PMA_LASI_TXALARM           0x0002  /* TX_ALARM enable/status */
 256#define MDIO_PMA_LASI_RXALARM           0x0004  /* RX_ALARM enable/status */
 257
 258/* Mapping between MDIO PRTAD/DEVAD and mii_ioctl_data::phy_id */
 259
 260#define MDIO_PHY_ID_C45                 0x8000
 261#define MDIO_PHY_ID_PRTAD               0x03e0
 262#define MDIO_PHY_ID_DEVAD               0x001f
 263#define MDIO_PHY_ID_C45_MASK                                            \
 264        (MDIO_PHY_ID_C45 | MDIO_PHY_ID_PRTAD | MDIO_PHY_ID_DEVAD)
 265
 266static inline __u16 mdio_phy_id_c45(int prtad, int devad)
 267{
 268        return MDIO_PHY_ID_C45 | (prtad << 5) | devad;
 269}
 270
 271static inline bool mdio_phy_id_is_c45(int phy_id)
 272{
 273        return (phy_id & MDIO_PHY_ID_C45) && !(phy_id & ~MDIO_PHY_ID_C45_MASK);
 274}
 275
 276static inline __u16 mdio_phy_id_prtad(int phy_id)
 277{
 278        return (phy_id & MDIO_PHY_ID_PRTAD) >> 5;
 279}
 280
 281static inline __u16 mdio_phy_id_devad(int phy_id)
 282{
 283        return phy_id & MDIO_PHY_ID_DEVAD;
 284}
 285
 286#define MDIO_SUPPORTS_C22               1
 287#define MDIO_SUPPORTS_C45               2
 288
 289#ifdef __KERNEL__ 
 290
 291/**
 292 * struct mdio_if_info - Ethernet controller MDIO interface
 293 * @prtad: PRTAD of the PHY (%MDIO_PRTAD_NONE if not present/unknown)
 294 * @mmds: Mask of MMDs expected to be present in the PHY.  This must be
 295 *      non-zero unless @prtad = %MDIO_PRTAD_NONE.
 296 * @mode_support: MDIO modes supported.  If %MDIO_SUPPORTS_C22 is set then
 297 *      MII register access will be passed through with @devad =
 298 *      %MDIO_DEVAD_NONE.  If %MDIO_EMULATE_C22 is set then access to
 299 *      commonly used clause 22 registers will be translated into
 300 *      clause 45 registers.
 301 * @dev: Net device structure
 302 * @mdio_read: Register read function; returns value or negative error code
 303 * @mdio_write: Register write function; returns 0 or negative error code
 304 */
 305struct mdio_if_info {
 306        int prtad;
 307        u32 mmds;
 308        unsigned mode_support;
 309
 310        struct net_device *dev;
 311        int (*mdio_read)(struct net_device *dev, int prtad, int devad,
 312                         u16 addr);
 313        int (*mdio_write)(struct net_device *dev, int prtad, int devad,
 314                          u16 addr, u16 val);
 315};
 316
 317#define MDIO_PRTAD_NONE                 (-1)
 318#define MDIO_DEVAD_NONE                 (-1)
 319#define MDIO_EMULATE_C22                4
 320
 321struct ethtool_cmd;
 322struct ethtool_pauseparam;
 323extern int mdio45_probe(struct mdio_if_info *mdio, int prtad);
 324extern int mdio_set_flag(const struct mdio_if_info *mdio,
 325                         int prtad, int devad, u16 addr, int mask,
 326                         bool sense);
 327extern int mdio45_links_ok(const struct mdio_if_info *mdio, u32 mmds);
 328extern int mdio45_nway_restart(const struct mdio_if_info *mdio);
 329extern void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
 330                                      struct ethtool_cmd *ecmd,
 331                                      u32 npage_adv, u32 npage_lpa);
 332extern void
 333mdio45_ethtool_spauseparam_an(const struct mdio_if_info *mdio,
 334                              const struct ethtool_pauseparam *ecmd);
 335
 336/**
 337 * mdio45_ethtool_gset - get settings for ETHTOOL_GSET
 338 * @mdio: MDIO interface
 339 * @ecmd: Ethtool request structure
 340 *
 341 * Since the CSRs for auto-negotiation using next pages are not fully
 342 * standardised, this function does not attempt to decode them.  Use
 343 * mdio45_ethtool_gset_npage() to specify advertisement bits from next
 344 * pages.
 345 */
 346static inline void mdio45_ethtool_gset(const struct mdio_if_info *mdio,
 347                                       struct ethtool_cmd *ecmd)
 348{
 349        mdio45_ethtool_gset_npage(mdio, ecmd, 0, 0);
 350}
 351
 352extern int mdio_mii_ioctl(const struct mdio_if_info *mdio,
 353                          struct mii_ioctl_data *mii_data, int cmd);
 354
 355#endif /* __KERNEL__ */
 356#endif /* __LINUX_MDIO_H__ */
 357