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 (davem (at) redhat.com) 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 <gpxe/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 220
