root/sys/dev/netif/mii_layer/miivar.h
/*      $NetBSD: miivar.h,v 1.46 2006/03/25 23:17:36 thorpej Exp $      */

/*-
 * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
 * NASA Ames Research Center.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the NetBSD
 *      Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD: src/sys/dev/mii/miivar.h,v 1.3.2.1 2000/12/12 19:29:14 wpaul Exp $
 * $DragonFly: src/sys/dev/netif/mii_layer/miivar.h,v 1.13 2008/07/22 10:59:16 sephe Exp $
 */

#ifndef _DEV_MII_MIIVAR_H_
#define _DEV_MII_MIIVAR_H_

#include <sys/queue.h>

/*
 * Media Independent Interface autoconfiguration defintions.
 *
 * This file exports an interface which attempts to be compatible
 * with the BSD/OS 3.0 interface.
 */

struct mii_softc;

/*
 * A network interface driver has one of these structures in its softc.
 * It is the interface from the network interface driver to the MII
 * layer.
 */
struct mii_data {
        struct ifmedia mii_media;       /* media information */
        struct ifnet *mii_ifp;          /* pointer back to network interface */

        /*
         * For network interfaces with multiple PHYs, a list of all
         * PHYs is required so they can all be notified when a media
         * request is made.
         */
        LIST_HEAD(mii_listhead, mii_softc) mii_phys;
        int mii_instance;

        /*
         * PHY driver fills this in with active media status.
         */
        int mii_media_status;
        int mii_media_active;
};
typedef struct mii_data mii_data_t;

/*
 * Requests that can be made to the downcall.
 */
#define MII_TICK        1       /* once-per-second tick */
#define MII_MEDIACHG    2       /* user changed media; perform the switch */
#define MII_POLLSTAT    3       /* user requested media status; fill it in */

/*
 * Each PHY driver's softc has one of these as the first member.
 * XXX This would be better named "phy_softc", but this is the name
 * XXX BSDI used, and we would like to have the same interface.
 */
struct mii_softc {
        device_t mii_dev;               /* generic device glue */
        
        LIST_ENTRY(mii_softc) mii_list; /* entry on parent's PHY list */

        int mii_model;                  /* MII_MODEL(ma->mii_id2) */
        int mii_rev;                    /* MII_REV(ma->mii_id2) */
        int mii_phy;                    /* our MII address */
        int mii_inst;                   /* instance for ifmedia */

        /*
         * This function pointer is used by the MII layer to call into
         * the PHY driver to perform a `service request'.
         */
        int (*mii_service)(struct mii_softc *, struct mii_data *, int);

        /*
         * This function pointer is used by the MII layer to reset PHY
         */
        void (*mii_reset)(struct mii_softc *);

        /*
         * This function pointer is used by the MII layer to get the
         * status of PHY 
         */
        void (*mii_status)(struct mii_softc *);

        struct mii_data *mii_pdata;     /* pointer to parent's mii_data */

        int mii_flags;                  /* misc. flags; see below */
        int mii_capabilities;           /* capabilities from BMSR */
        int mii_extcapabilities;        /* extended capabilities from EXTSR */
        int mii_ticks;                  /* MII_TICK counter */
        int mii_anegticks;              /* ticks before retrying aneg */
        int mii_privtag;                /* MII_PRIVTAG_ */
        uintptr_t mii_priv;             /* private data, based on mii_privtag */

        int mii_media_active;           /* last active media */
        int mii_media_status;           /* last active status */
};
typedef struct mii_softc mii_softc_t;

/* mii_flags */
#define MIIF_INITDONE   0x0001          /* has been initialized (mii_data) */
#define MIIF_NOISOLATE  0x0002          /* do not isolate the PHY */
#define MIIF_NOLOOP     0x0004          /* no loopback capability */
#define MIIF_HAVEFIBER  0x0020          /* from parent: has fiber interface */
#define MIIF_HAVE_GTCR  0x0040          /* has 100base-T2/1000base-T CR */
#define MIIF_IS_1000X   0x0080          /* is a 1000BASE-X device */
#define MIIF_DOPAUSE    0x0100          /* advertise PAUSE capability */
#define MIIF_IS_HPNA    0x0200          /* is a HomePNA device */
#define MIIF_FORCEANEG  0x0400          /* is a HomePNA device */

#define MIIF_INHERIT_MASK       (MIIF_NOISOLATE|MIIF_NOLOOP)

/*
 * Used to attach a PHY to a parent.
 */
struct mii_attach_args {
        struct mii_data *mii_data;      /* pointer to parent data */
        int mii_phyno;                  /* MII address */
        int mii_id1;                    /* PHY ID register 1 */
        int mii_id2;                    /* PHY ID register 2 */
        int mii_capmask;                /* capability mask from BMSR */
        int mii_flags;                  /* inherited by mii_softc->mii_flags */
        int mii_privtag;                /* MII_PRIVTAG_ */
        uintptr_t mii_priv;             /* private data, based on mii_privtag */
};
typedef struct mii_attach_args mii_attach_args_t;

/*
 * Used to probe a PHY to a network device.
 */
struct mii_probe_args {
        ifm_change_cb_t mii_ifmedia_upd;/* ifmedia_upd callback */
        ifm_stat_cb_t mii_ifmedia_sts;  /* ifmedia_sts callback */
        u_int mii_probemask;            /* PHY probe location mask */
        int mii_capmask;                /* capability mask from BMSR */
        int mii_flags;                  /* inherited by mii_softc->mii_flags */
        int mii_privtag;                /* MII_PRIVTAG_ */
        uintptr_t mii_priv;             /* private data, based on mii_privtag */
};

#define MII_PROBEMASK_DEFAULT   0xffffffff /* probe at all locations */
#define MII_CAPMASK_DEFAULT     0xffffffff /* all capabilities from BMSR */

#define MII_PRIVTAG_NONE        0       /* no private data (mii_priv) */
#define MII_PRIVTAG_BRGPHY      1       /* brgphy specific */

/*
 * Used to match a PHY
 */
struct mii_phydesc {
        uint32_t mpd_oui;       /* PHY's oui */
        uint32_t mpd_model;     /* PHY's model */
        const char *mpd_name;   /* PHY's name */
        void *mpd_priv;         /* PHY's private data */
};

#define MII_PHYDESC_NULL \
{ \
        .mpd_oui = 0, \
        .mpd_model = 0, \
        .mpd_name = NULL, \
        .mpd_priv = NULL \
}
#define MII_PHYDESC(oui, model) \
{ \
        .mpd_oui        = MII_OUI_##oui, \
        .mpd_model      = MII_MODEL_##oui##_##model, \
        .mpd_name       = MII_STR_##oui##_##model, \
        .mpd_priv       = NULL \
}
#define MII_PHYDESC_ARG(oui, model, arg) \
{ \
        .mpd_oui        = MII_OUI_##oui, \
        .mpd_model      = MII_MODEL_##oui##_##model, \
        .mpd_name       = MII_STR_##oui##_##model, \
        .mpd_priv       = arg \
}

#ifdef _KERNEL

#define PHY_READ(p, r) \
        MIIBUS_READREG((p)->mii_dev, (p)->mii_phy, (r))

#define PHY_WRITE(p, r, v) \
        MIIBUS_WRITEREG((p)->mii_dev, (p)->mii_phy, (r), (v))

/*
 * An array of these structures map MII media types to BMCR/ANAR settings.
 */
struct mii_media {
        int     mm_bmcr;                /* BMCR settings for this media */
        int     mm_anar;                /* ANAR settings for this media */
        int     mm_gtcr;                /* 100base-T2 or 1000base-T CR */
};

#define MII_MEDIA_NONE          0
#define MII_MEDIA_10_T          1
#define MII_MEDIA_10_T_FDX      2
#define MII_MEDIA_100_T4        3
#define MII_MEDIA_100_TX        4
#define MII_MEDIA_100_TX_FDX    5
#define MII_MEDIA_1000_X        6
#define MII_MEDIA_1000_X_FDX    7
#define MII_MEDIA_1000_T        8
#define MII_MEDIA_1000_T_FDX    9
#define MII_NMEDIA              10

extern const struct mii_media   mii_media_table[MII_NMEDIA];

#define MII_ANEGTICKS           5
#define MII_ANEGTICKS_GIGE      10

extern devclass_t       miibus_devclass;
extern driver_t         miibus_driver;

int     mii_mediachg(struct mii_data *);
void    mii_tick(struct mii_data *);
void    mii_pollstat(struct mii_data *);
int     mii_phy_probe(device_t, device_t *, ifm_change_cb_t, ifm_stat_cb_t);
int     mii_probe(device_t, device_t *, const struct mii_probe_args *);
void    mii_probe_args_init(struct mii_probe_args *,
            ifm_change_cb_t, ifm_stat_cb_t);

void    mii_phy_add_media(struct mii_softc *);
void    mii_phy_set_media(struct mii_softc *);
int     mii_phy_tick(struct mii_softc *);
void    mii_phy_update(struct mii_softc *, int);
int     mii_phy_flowstatus(struct mii_softc *);
const struct mii_phydesc *mii_phy_match(const struct mii_attach_args *,
                                        const struct mii_phydesc *);

void    mii_softc_init(struct mii_softc *, struct mii_attach_args *);

int     mii_phy_auto(struct mii_softc *, int);
void    mii_phy_reset(struct mii_softc *);

void    ukphy_status(struct mii_softc *);
int     ukphy_attach(device_t);
int     ukphy_detach(device_t);

#endif /* _KERNEL */

#endif /* _DEV_MII_MIIVAR_H_ */