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