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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | * linux/mii.h: definitions for MII-compatible transceivers |
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| 3 | * Originally drivers/net/sunhme.h. |
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| 4 | * |
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| 5 | * Copyright (C) 1996, 1999, 2001 David S. Miller (davem@redhat.com) |
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| 6 | */ |
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| 7 | |||
| 8 | #ifndef __LINUX_MII_H__ |
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| 9 | #define __LINUX_MII_H__ |
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| 10 | |||
| 11 | #include <linux/types.h> |
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| 12 | |||
| 13 | /* Generic MII registers. */ |
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| 14 | |||
| 15 | #define MII_BMCR 0x00 /* Basic mode control register */ |
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| 16 | #define MII_BMSR 0x01 /* Basic mode status register */ |
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| 17 | #define MII_PHYSID1 0x02 /* PHYS ID 1 */ |
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| 18 | #define MII_PHYSID2 0x03 /* PHYS ID 2 */ |
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| 19 | #define MII_ADVERTISE 0x04 /* Advertisement control reg */ |
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| 20 | #define MII_LPA 0x05 /* Link partner ability reg */ |
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| 21 | #define MII_EXPANSION 0x06 /* Expansion register */ |
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| 22 | #define MII_DCOUNTER 0x12 /* Disconnect counter */ |
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| 23 | #define MII_FCSCOUNTER 0x13 /* False carrier counter */ |
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| 24 | #define MII_NWAYTEST 0x14 /* N-way auto-neg test reg */ |
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| 25 | #define MII_RERRCOUNTER 0x15 /* Receive error counter */ |
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| 26 | #define MII_SREVISION 0x16 /* Silicon revision */ |
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| 27 | #define MII_RESV1 0x17 /* Reserved... */ |
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| 28 | #define MII_LBRERROR 0x18 /* Lpback, rx, bypass error */ |
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| 29 | #define MII_PHYADDR 0x19 /* PHY address */ |
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| 30 | #define MII_RESV2 0x1a /* Reserved... */ |
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| 31 | #define MII_TPISTATUS 0x1b /* TPI status for 10mbps */ |
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| 32 | #define MII_NCONFIG 0x1c /* Network interface config */ |
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| 33 | |||
| 34 | /* Basic mode control register. */ |
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| 35 | #define BMCR_RESV 0x007f /* Unused... */ |
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| 36 | #define BMCR_CTST 0x0080 /* Collision test */ |
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| 37 | #define BMCR_FULLDPLX 0x0100 /* Full duplex */ |
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| 38 | #define BMCR_ANRESTART 0x0200 /* Auto negotiation restart */ |
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| 39 | #define BMCR_ISOLATE 0x0400 /* Disconnect DP83840 from MII */ |
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| 40 | #define BMCR_PDOWN 0x0800 /* Powerdown the DP83840 */ |
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| 41 | #define BMCR_ANENABLE 0x1000 /* Enable auto negotiation */ |
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| 42 | #define BMCR_SPEED100 0x2000 /* Select 100Mbps */ |
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| 43 | #define BMCR_LOOPBACK 0x4000 /* TXD loopback bits */ |
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| 44 | #define BMCR_RESET 0x8000 /* Reset the DP83840 */ |
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| 45 | |||
| 46 | /* Basic mode status register. */ |
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| 47 | #define BMSR_ERCAP 0x0001 /* Ext-reg capability */ |
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| 48 | #define BMSR_JCD 0x0002 /* Jabber detected */ |
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| 49 | #define BMSR_LSTATUS 0x0004 /* Link status */ |
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| 50 | #define BMSR_ANEGCAPABLE 0x0008 /* Able to do auto-negotiation */ |
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| 51 | #define BMSR_RFAULT 0x0010 /* Remote fault detected */ |
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| 52 | #define BMSR_ANEGCOMPLETE 0x0020 /* Auto-negotiation complete */ |
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| 53 | #define BMSR_RESV 0x07c0 /* Unused... */ |
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| 54 | #define BMSR_10HALF 0x0800 /* Can do 10mbps, half-duplex */ |
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| 55 | #define BMSR_10FULL 0x1000 /* Can do 10mbps, full-duplex */ |
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| 56 | #define BMSR_100HALF 0x2000 /* Can do 100mbps, half-duplex */ |
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| 57 | #define BMSR_100FULL 0x4000 /* Can do 100mbps, full-duplex */ |
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| 58 | #define BMSR_100BASE4 0x8000 /* Can do 100mbps, 4k packets */ |
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| 59 | |||
| 60 | /* Advertisement control register. */ |
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| 61 | #define ADVERTISE_SLCT 0x001f /* Selector bits */ |
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| 62 | #define ADVERTISE_CSMA 0x0001 /* Only selector supported */ |
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| 63 | #define ADVERTISE_10HALF 0x0020 /* Try for 10mbps half-duplex */ |
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| 64 | #define ADVERTISE_10FULL 0x0040 /* Try for 10mbps full-duplex */ |
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| 65 | #define ADVERTISE_100HALF 0x0080 /* Try for 100mbps half-duplex */ |
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| 66 | #define ADVERTISE_100FULL 0x0100 /* Try for 100mbps full-duplex */ |
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| 67 | #define ADVERTISE_100BASE4 0x0200 /* Try for 100mbps 4k packets */ |
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| 68 | #define ADVERTISE_RESV 0x1c00 /* Unused... */ |
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| 69 | #define ADVERTISE_RFAULT 0x2000 /* Say we can detect faults */ |
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| 70 | #define ADVERTISE_LPACK 0x4000 /* Ack link partners response */ |
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| 71 | #define ADVERTISE_NPAGE 0x8000 /* Next page bit */ |
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| 72 | |||
| 73 | #define ADVERTISE_FULL (ADVERTISE_100FULL | ADVERTISE_10FULL | \ |
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| 74 | ADVERTISE_CSMA) |
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| 75 | #define ADVERTISE_ALL (ADVERTISE_10HALF | ADVERTISE_10FULL | \ |
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| 76 | ADVERTISE_100HALF | ADVERTISE_100FULL) |
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| 77 | |||
| 78 | /* Link partner ability register. */ |
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| 79 | #define LPA_SLCT 0x001f /* Same as advertise selector */ |
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| 80 | #define LPA_10HALF 0x0020 /* Can do 10mbps half-duplex */ |
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| 81 | #define LPA_10FULL 0x0040 /* Can do 10mbps full-duplex */ |
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| 82 | #define LPA_100HALF 0x0080 /* Can do 100mbps half-duplex */ |
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| 83 | #define LPA_100FULL 0x0100 /* Can do 100mbps full-duplex */ |
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| 84 | #define LPA_100BASE4 0x0200 /* Can do 100mbps 4k packets */ |
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| 85 | #define LPA_RESV 0x1c00 /* Unused... */ |
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| 86 | #define LPA_RFAULT 0x2000 /* Link partner faulted */ |
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| 87 | #define LPA_LPACK 0x4000 /* Link partner acked us */ |
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| 88 | #define LPA_NPAGE 0x8000 /* Next page bit */ |
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| 89 | |||
| 90 | #define LPA_DUPLEX (LPA_10FULL | LPA_100FULL) |
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| 91 | #define LPA_100 (LPA_100FULL | LPA_100HALF | LPA_100BASE4) |
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| 92 | |||
| 93 | /* Expansion register for auto-negotiation. */ |
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| 94 | #define EXPANSION_NWAY 0x0001 /* Can do N-way auto-nego */ |
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| 95 | #define EXPANSION_LCWP 0x0002 /* Got new RX page code word */ |
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| 96 | #define EXPANSION_ENABLENPAGE 0x0004 /* This enables npage words */ |
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| 97 | #define EXPANSION_NPCAPABLE 0x0008 /* Link partner supports npage */ |
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| 98 | #define EXPANSION_MFAULTS 0x0010 /* Multiple faults detected */ |
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| 99 | #define EXPANSION_RESV 0xffe0 /* Unused... */ |
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| 100 | |||
| 101 | /* N-way test register. */ |
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| 102 | #define NWAYTEST_RESV1 0x00ff /* Unused... */ |
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| 103 | #define NWAYTEST_LOOPBACK 0x0100 /* Enable loopback for N-way */ |
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| 104 | #define NWAYTEST_RESV2 0xfe00 /* Unused... */ |
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| 105 | |||
| 106 | |||
| 107 | struct mii_if_info { |
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| 108 | int phy_id; |
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| 109 | int advertising; |
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| 110 | int phy_id_mask; |
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| 111 | int reg_num_mask; |
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| 112 | |||
| 113 | unsigned int full_duplex : 1; /* is full duplex? */ |
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| 114 | unsigned int force_media : 1; /* is autoneg. disabled? */ |
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| 115 | |||
| 116 | struct net_device *dev; |
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| 117 | int (*mdio_read) (struct net_device *dev, int phy_id, int location); |
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| 118 | void (*mdio_write) (struct net_device *dev, int phy_id, int location, int val); |
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| 119 | }; |
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| 120 | |||
| 121 | struct ethtool_cmd; |
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| 122 | struct mii_ioctl_data; |
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| 123 | |||
| 124 | extern int mii_link_ok (struct mii_if_info *mii); |
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| 125 | extern int mii_nway_restart (struct mii_if_info *mii); |
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| 126 | extern int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); |
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| 127 | extern int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd); |
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| 128 | extern void mii_check_link (struct mii_if_info *mii); |
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| 129 | extern unsigned int mii_check_media (struct mii_if_info *mii, |
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| 130 | unsigned int ok_to_print, |
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| 131 | unsigned int init_media); |
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| 132 | extern int generic_mii_ioctl(struct mii_if_info *mii_if, |
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| 133 | struct mii_ioctl_data *mii_data, int cmd, |
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| 134 | unsigned int *duplex_changed); |
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| 135 | |||
| 136 | |||
| 137 | |||
| 138 | /* This structure is used in all SIOCxMIIxxx ioctl calls */ |
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| 139 | struct mii_ioctl_data { |
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| 140 | u16 phy_id; |
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| 141 | u16 reg_num; |
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| 142 | u16 val_in; |
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| 143 | u16 val_out; |
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| 144 | }; |
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| 145 | |||
| 146 | |||
| 147 | /** |
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| 148 | * mii_nway_result |
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| 149 | * @negotiated: value of MII ANAR and'd with ANLPAR |
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| 150 | * |
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| 151 | * Given a set of MII abilities, check each bit and returns the |
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| 152 | * currently supported media, in the priority order defined by |
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| 153 | * IEEE 802.3u. We use LPA_xxx constants but note this is not the |
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| 154 | * value of LPA solely, as described above. |
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| 155 | * |
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| 156 | * The one exception to IEEE 802.3u is that 100baseT4 is placed |
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| 157 | * between 100T-full and 100T-half. If your phy does not support |
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| 158 | * 100T4 this is fine. If your phy places 100T4 elsewhere in the |
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| 159 | * priority order, you will need to roll your own function. |
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| 160 | */ |
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| 161 | static inline unsigned int mii_nway_result (unsigned int negotiated) |
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| 162 | { |
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| 163 | unsigned int ret; |
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| 164 | |||
| 165 | if (negotiated & LPA_100FULL) |
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| 166 | ret = LPA_100FULL; |
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| 167 | else if (negotiated & LPA_100BASE4) |
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| 168 | ret = LPA_100BASE4; |
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| 169 | else if (negotiated & LPA_100HALF) |
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| 170 | ret = LPA_100HALF; |
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| 171 | else if (negotiated & LPA_10FULL) |
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| 172 | ret = LPA_10FULL; |
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| 173 | else |
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| 174 | ret = LPA_10HALF; |
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| 175 | |||
| 176 | return ret; |
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| 177 | } |
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| 178 | |||
| 179 | /** |
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| 180 | * mii_duplex |
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| 181 | * @duplex_lock: Non-zero if duplex is locked at full |
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| 182 | * @negotiated: value of MII ANAR and'd with ANLPAR |
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| 183 | * |
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| 184 | * A small helper function for a common case. Returns one |
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| 185 | * if the media is operating or locked at full duplex, and |
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| 186 | * returns zero otherwise. |
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| 187 | */ |
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| 188 | static inline unsigned int mii_duplex (unsigned int duplex_lock, |
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| 189 | unsigned int negotiated) |
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| 190 | { |
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| 191 | if (duplex_lock) |
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| 192 | return 1; |
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| 193 | if (mii_nway_result(negotiated) & LPA_DUPLEX) |
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| 194 | return 1; |
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| 195 | return 0; |
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| 196 | } |
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| 197 | |||
| 198 | |||
| 199 | #endif /* __LINUX_MII_H__ */ |