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Annotation of qemu/roms/ipxe/src/include/mii.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * linux/mii.h: definitions for MII-compatible transceivers
        !             3:  * Originally drivers/net/sunhme.h.
        !             4:  *
        !             5:  * Copyright (C) 1996, 1999, 2001 David S. Miller ([email protected])
        !             6:  *
        !             7:  * Copied Form Linux 2.4.25 an unneeded items removed by:
        !             8:  * Timothy Legge (timlegge at etherboot dot org)
        !             9:  *
        !            10:  * 03/26/2004
        !            11:  */
        !            12: 
        !            13: FILE_LICENCE ( GPL2_ONLY );
        !            14: 
        !            15: #ifndef _MII_H_
        !            16: #define _MII_H_
        !            17: 
        !            18: /* Generic MII registers. */
        !            19: 
        !            20: #define MII_BMCR            0x00       /* Basic mode control register */
        !            21: #define MII_BMSR            0x01       /* Basic mode status register  */
        !            22: #define MII_PHYSID1         0x02        /* PHYS ID 1                   */
        !            23: #define MII_PHYSID2         0x03        /* PHYS ID 2                   */
        !            24: #define MII_ADVERTISE       0x04       /* Advertisement control reg   */
        !            25: #define MII_LPA             0x05       /* Link partner ability reg    */
        !            26: #define MII_EXPANSION       0x06        /* Expansion register          */
        !            27: #define MII_CTRL1000        0x09        /* 1000BASE-T control          */
        !            28: #define MII_STAT1000        0x0a        /* 1000BASE-T status           */
        !            29: #define MII_ESTATUS         0x0f        /* Extended Status */
        !            30: #define MII_DCOUNTER        0x12        /* Disconnect counter          */
        !            31: #define MII_FCSCOUNTER      0x13        /* False carrier counter       */
        !            32: #define MII_NWAYTEST        0x14        /* N-way auto-neg test reg     */
        !            33: #define MII_RERRCOUNTER     0x15        /* Receive error counter       */
        !            34: #define MII_SREVISION       0x16        /* Silicon revision            */
        !            35: #define MII_RESV1           0x17        /* Reserved...                 */
        !            36: #define MII_LBRERROR        0x18        /* Lpback, rx, bypass error    */
        !            37: #define MII_PHYADDR         0x19        /* PHY address                 */
        !            38: #define MII_RESV2           0x1a        /* Reserved...                 */
        !            39: #define MII_TPISTATUS       0x1b        /* TPI status for 10mbps       */
        !            40: #define MII_NCONFIG         0x1c        /* Network interface config    */
        !            41: 
        !            42: /* Basic mode control register. */
        !            43: #define BMCR_RESV               0x003f  /* Unused...                   */
        !            44: #define BMCR_SPEED1000          0x0040  /* MSB of Speed (1000)         */
        !            45: #define BMCR_CTST               0x0080  /* Collision test              */
        !            46: #define BMCR_FULLDPLX           0x0100 /* Full duplex                 */
        !            47: #define BMCR_ANRESTART          0x0200 /* Auto negotiation restart    */
        !            48: #define BMCR_ISOLATE            0x0400  /* Disconnect DP83840 from MII */
        !            49: #define BMCR_PDOWN              0x0800  /* Powerdown the DP83840       */
        !            50: #define BMCR_ANENABLE           0x1000 /* Enable auto negotiation     */
        !            51: #define BMCR_SPEED100           0x2000 /* Select 100Mbps              */
        !            52: #define BMCR_LOOPBACK           0x4000  /* TXD loopback bits           */
        !            53: #define BMCR_RESET              0x8000 /* Reset the DP83840           */
        !            54: 
        !            55: /* Basic mode status register. */
        !            56: #define BMSR_ERCAP              0x0001  /* Ext-reg capability          */
        !            57: #define BMSR_JCD                0x0002  /* Jabber detected             */
        !            58: #define BMSR_LSTATUS            0x0004  /* Link status                 */
        !            59: #define BMSR_ANEGCAPABLE        0x0008  /* Able to do auto-negotiation */
        !            60: #define BMSR_RFAULT             0x0010  /* Remote fault detected       */
        !            61: #define BMSR_ANEGCOMPLETE       0x0020  /* Auto-negotiation complete   */
        !            62: #define BMSR_RESV               0x00c0  /* Unused...                   */
        !            63: #define BMSR_ESTATEN            0x0100  /* Extended Status in R15 */
        !            64: #define BMSR_100HALF2           0x0200  /* Can do 100BASE-T2 HDX */
        !            65: #define BMSR_100FULL2           0x0400  /* Can do 100BASE-T2 FDX */
        !            66: #define BMSR_10HALF             0x0800  /* Can do 10mbps, half-duplex  */
        !            67: #define BMSR_10FULL             0x1000  /* Can do 10mbps, full-duplex  */
        !            68: #define BMSR_100HALF            0x2000  /* Can do 100mbps, half-duplex */
        !            69: #define BMSR_100FULL            0x4000  /* Can do 100mbps, full-duplex */
        !            70: #define BMSR_100BASE4           0x8000  /* Can do 100mbps, 4k packets  */
        !            71: 
        !            72: /* Advertisement control register. */
        !            73: #define ADVERTISE_SLCT          0x001f  /* Selector bits               */
        !            74: #define ADVERTISE_CSMA          0x0001  /* Only selector supported     */
        !            75: #define ADVERTISE_10HALF        0x0020 /* Try for 10mbps half-duplex  */
        !            76: #define ADVERTISE_1000XFULL     0x0020  /* Try for 1000BASE-X full-duplex */
        !            77: #define ADVERTISE_10FULL        0x0040 /* Try for 10mbps full-duplex  */
        !            78: #define ADVERTISE_1000XHALF     0x0040  /* Try for 1000BASE-X half-duplex */
        !            79: #define ADVERTISE_100HALF       0x0080 /* Try for 100mbps half-duplex */
        !            80: #define ADVERTISE_1000XPAUSE    0x0080  /* Try for 1000BASE-X pause    */
        !            81: #define ADVERTISE_100FULL       0x0100 /* Try for 100mbps full-duplex */
        !            82: #define ADVERTISE_1000XPSE_ASYM 0x0100  /* Try for 1000BASE-X asym pause */
        !            83: #define ADVERTISE_100BASE4      0x0200  /* Try for 100mbps 4k packets  */
        !            84: #define ADVERTISE_PAUSE_CAP     0x0400  /* Try for pause               */
        !            85: #define ADVERTISE_PAUSE_ASYM    0x0800  /* Try for asymetric pause     */
        !            86: #define ADVERTISE_RESV          0x1000  /* Unused...                   */
        !            87: #define ADVERTISE_RFAULT        0x2000  /* Say we can detect faults    */
        !            88: #define ADVERTISE_LPACK         0x4000  /* Ack link partners response  */
        !            89: #define ADVERTISE_NPAGE         0x8000  /* Next page bit               */
        !            90: 
        !            91: #define ADVERTISE_FULL (ADVERTISE_100FULL | ADVERTISE_10FULL | \
        !            92:                        ADVERTISE_CSMA)
        !            93: #define ADVERTISE_ALL (ADVERTISE_10HALF | ADVERTISE_10FULL | \
        !            94:                       ADVERTISE_100HALF | ADVERTISE_100FULL)
        !            95: 
        !            96: /* Link partner ability register. */
        !            97: #define LPA_SLCT                0x001f  /* Same as advertise selector  */
        !            98: #define LPA_10HALF              0x0020  /* Can do 10mbps half-duplex   */
        !            99: #define LPA_1000XFULL           0x0020  /* Can do 1000BASE-X full-duplex */
        !           100: #define LPA_10FULL              0x0040  /* Can do 10mbps full-duplex   */
        !           101: #define LPA_1000XHALF           0x0040  /* Can do 1000BASE-X half-duplex */
        !           102: #define LPA_100HALF             0x0080  /* Can do 100mbps half-duplex  */
        !           103: #define LPA_1000XPAUSE          0x0080  /* Can do 1000BASE-X pause     */
        !           104: #define LPA_100FULL             0x0100  /* Can do 100mbps full-duplex  */
        !           105: #define LPA_1000XPAUSE_ASYM     0x0100  /* Can do 1000BASE-X pause asym*/
        !           106: #define LPA_100BASE4            0x0200  /* Can do 100mbps 4k packets   */
        !           107: #define LPA_PAUSE_CAP           0x0400  /* Can pause                   */
        !           108: #define LPA_PAUSE_ASYM          0x0800  /* Can pause asymetrically     */
        !           109: #define LPA_RESV                0x1000  /* Unused...                   */
        !           110: #define LPA_RFAULT              0x2000  /* Link partner faulted        */
        !           111: #define LPA_LPACK               0x4000  /* Link partner acked us       */
        !           112: #define LPA_NPAGE               0x8000  /* Next page bit               */
        !           113: 
        !           114: #define LPA_DUPLEX            (LPA_10FULL | LPA_100FULL)
        !           115: #define LPA_100                       (LPA_100FULL | LPA_100HALF | LPA_100BASE4)
        !           116: 
        !           117: /* Expansion register for auto-negotiation. */
        !           118: #define EXPANSION_NWAY          0x0001  /* Can do N-way auto-nego      */
        !           119: #define EXPANSION_LCWP          0x0002  /* Got new RX page code word   */
        !           120: #define EXPANSION_ENABLENPAGE   0x0004  /* This enables npage words    */
        !           121: #define EXPANSION_NPCAPABLE     0x0008  /* Link partner supports npage */
        !           122: #define EXPANSION_MFAULTS       0x0010  /* Multiple faults detected    */
        !           123: #define EXPANSION_RESV          0xffe0  /* Unused...                   */
        !           124: 
        !           125: #define ESTATUS_1000_TFULL      0x2000  /* Can do 1000BT Full */
        !           126: #define ESTATUS_1000_THALF      0x1000  /* Can do 1000BT Half */
        !           127: 
        !           128: /* N-way test register. */
        !           129: #define NWAYTEST_RESV1          0x00ff  /* Unused...                   */
        !           130: #define NWAYTEST_LOOPBACK       0x0100  /* Enable loopback for N-way   */
        !           131: #define NWAYTEST_RESV2          0xfe00  /* Unused...                   */
        !           132: 
        !           133: /* 1000BASE-T Control register */
        !           134: #define ADVERTISE_1000FULL      0x0200  /* Advertise 1000BASE-T full duplex */
        !           135: #define ADVERTISE_1000HALF      0x0100  /* Advertise 1000BASE-T half duplex */
        !           136: 
        !           137: /* 1000BASE-T Status register */
        !           138: #define LPA_1000LOCALRXOK       0x2000  /* Link partner local receiver status */
        !           139: #define LPA_1000REMRXOK         0x1000  /* Link partner remote receiver status */
        !           140: #define LPA_1000FULL            0x0800  /* Link partner 1000BASE-T full duplex */
        !           141: #define LPA_1000HALF            0x0400  /* Link partner 1000BASE-T half duplex */
        !           142: 
        !           143: #include <ipxe/netdevice.h>
        !           144: 
        !           145: struct mii_if_info {
        !           146:         int phy_id;
        !           147:         int advertising;
        !           148:         int phy_id_mask;
        !           149:         int reg_num_mask;
        !           150: 
        !           151:         unsigned int full_duplex : 1;   /* is full duplex? */
        !           152:         unsigned int force_media : 1;   /* is autoneg. disabled? */
        !           153:         unsigned int supports_gmii : 1; /* are GMII registers supported? */
        !           154: 
        !           155:         struct net_device *dev;
        !           156:         int (*mdio_read) (struct net_device *dev, int phy_id, int location);
        !           157:         void (*mdio_write) (struct net_device *dev, int phy_id, int location, int val);
        !           158: };
        !           159: 
        !           160: 
        !           161: extern int mii_link_ok (struct mii_if_info *mii);
        !           162: extern void mii_check_link (struct mii_if_info *mii);
        !           163: extern unsigned int mii_check_media (struct mii_if_info *mii,
        !           164:                                        unsigned int ok_to_print,
        !           165:                                        unsigned int init_media);
        !           166: 
        !           167: 
        !           168: /**
        !           169:  * mii_nway_result
        !           170:  * @negotiated: value of MII ANAR and'd with ANLPAR
        !           171:  *
        !           172:  * Given a set of MII abilities, check each bit and returns the
        !           173:  * currently supported media, in the priority order defined by
        !           174:  * IEEE 802.3u.  We use LPA_xxx constants but note this is not the
        !           175:  * value of LPA solely, as described above.
        !           176:  *
        !           177:  * The one exception to IEEE 802.3u is that 100baseT4 is placed
        !           178:  * between 100T-full and 100T-half.  If your phy does not support
        !           179:  * 100T4 this is fine.  If your phy places 100T4 elsewhere in the
        !           180:  * priority order, you will need to roll your own function.
        !           181:  */
        !           182: static inline unsigned int mii_nway_result (unsigned int negotiated)
        !           183: {
        !           184:         unsigned int ret;
        !           185: 
        !           186:         if (negotiated & LPA_100FULL)
        !           187:                 ret = LPA_100FULL;
        !           188:         else if (negotiated & LPA_100BASE4)
        !           189:                 ret = LPA_100BASE4;
        !           190:         else if (negotiated & LPA_100HALF)
        !           191:                 ret = LPA_100HALF;
        !           192:         else if (negotiated & LPA_10FULL)
        !           193:                 ret = LPA_10FULL;
        !           194:         else
        !           195:                 ret = LPA_10HALF;
        !           196: 
        !           197:         return ret;
        !           198: }
        !           199: 
        !           200: /**
        !           201:  * mii_duplex
        !           202:  * @duplex_lock: Non-zero if duplex is locked at full
        !           203:  * @negotiated: value of MII ANAR and'd with ANLPAR
        !           204:  *
        !           205:  * A small helper function for a common case.  Returns one
        !           206:  * if the media is operating or locked at full duplex, and
        !           207:  * returns zero otherwise.
        !           208:  */
        !           209: static inline unsigned int mii_duplex (unsigned int duplex_lock,
        !           210:                                        unsigned int negotiated)
        !           211: {
        !           212:         if (duplex_lock)
        !           213:                 return 1;
        !           214:         if (mii_nway_result(negotiated) & LPA_DUPLEX)
        !           215:                 return 1;
        !           216:         return 0;
        !           217: }
        !           218: 
        !           219: #endif

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