11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* $Id: sunbmac.h,v 1.7 2000/07/11 22:35:22 davem Exp $ 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * sunbmac.h: Defines for the Sun "Big MAC" 100baseT ethernet cards. 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifndef _SUNBMAC_H 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define _SUNBMAC_H 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* QEC global registers. */ 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_CTRL 0x00UL /* Control */ 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_STAT 0x04UL /* Status */ 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_PSIZE 0x08UL /* Packet Size */ 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_MSIZE 0x0cUL /* Local-mem size (64K) */ 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_RSIZE 0x10UL /* Receive partition size */ 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_TSIZE 0x14UL /* Transmit partition size */ 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_REG_SIZE 0x18UL 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_CTRL_MMODE 0x40000000 /* MACE qec mode */ 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_CTRL_BMODE 0x10000000 /* BigMAC qec mode */ 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_CTRL_EPAR 0x00000020 /* Enable parity */ 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_CTRL_ACNTRL 0x00000018 /* SBUS arbitration control */ 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_CTRL_B64 0x00000004 /* 64 byte dvma bursts */ 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_CTRL_B32 0x00000002 /* 32 byte dvma bursts */ 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_CTRL_B16 0x00000000 /* 16 byte dvma bursts */ 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_CTRL_RESET 0x00000001 /* Reset the QEC */ 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_STAT_TX 0x00000008 /* BigMAC Transmit IRQ */ 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_STAT_RX 0x00000004 /* BigMAC Receive IRQ */ 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_STAT_BM 0x00000002 /* BigMAC Global IRQ */ 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_STAT_ER 0x00000001 /* BigMAC Error IRQ */ 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_PSIZE_2048 0x00 /* 2k packet size */ 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_PSIZE_4096 0x01 /* 4k packet size */ 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_PSIZE_6144 0x10 /* 6k packet size */ 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GLOB_PSIZE_8192 0x11 /* 8k packet size */ 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* QEC BigMAC channel registers. */ 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_CTRL 0x00UL /* Control */ 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT 0x04UL /* Status */ 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_RXDS 0x08UL /* RX descriptor ring ptr */ 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_TXDS 0x0cUL /* TX descriptor ring ptr */ 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_RIMASK 0x10UL /* RX Interrupt Mask */ 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_TIMASK 0x14UL /* TX Interrupt Mask */ 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_QMASK 0x18UL /* QEC Error Interrupt Mask */ 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_BMASK 0x1cUL /* BigMAC Error Interrupt Mask*/ 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_RXWBUFPTR 0x20UL /* Local memory rx write ptr */ 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_RXRBUFPTR 0x24UL /* Local memory rx read ptr */ 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_TXWBUFPTR 0x28UL /* Local memory tx write ptr */ 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_TXRBUFPTR 0x2cUL /* Local memory tx read ptr */ 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_CCNT 0x30UL /* Collision Counter */ 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_REG_SIZE 0x34UL 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_CTRL_TWAKEUP 0x00000001 /* Transmitter Wakeup, 'go'. */ 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT_BERROR 0x80000000 /* BigMAC error */ 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT_TXIRQ 0x00200000 /* Transmit Interrupt */ 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT_TXDERROR 0x00080000 /* TX Descriptor is bogus */ 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT_TXLERR 0x00040000 /* Late Transmit Error */ 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT_TXPERR 0x00020000 /* Transmit Parity Error */ 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT_TXSERR 0x00010000 /* Transmit SBUS error ack */ 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT_RXIRQ 0x00000020 /* Receive Interrupt */ 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT_RXDROP 0x00000010 /* Dropped a RX'd packet */ 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT_RXSMALL 0x00000008 /* Receive buffer too small */ 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT_RXLERR 0x00000004 /* Receive Late Error */ 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT_RXPERR 0x00000002 /* Receive Parity Error */ 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT_RXSERR 0x00000001 /* Receive SBUS Error ACK */ 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_STAT_ERRORS (CREG_STAT_BERROR|CREG_STAT_TXDERROR|CREG_STAT_TXLERR| \ 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds CREG_STAT_TXPERR|CREG_STAT_TXSERR|CREG_STAT_RXDROP| \ 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds CREG_STAT_RXSMALL|CREG_STAT_RXLERR|CREG_STAT_RXPERR| \ 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds CREG_STAT_RXSERR) 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_QMASK_TXDERROR 0x00080000 /* TXD error */ 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_QMASK_TXLERR 0x00040000 /* TX late error */ 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_QMASK_TXPERR 0x00020000 /* TX parity error */ 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_QMASK_TXSERR 0x00010000 /* TX sbus error ack */ 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_QMASK_RXDROP 0x00000010 /* RX drop */ 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_QMASK_RXBERROR 0x00000008 /* RX buffer error */ 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_QMASK_RXLEERR 0x00000004 /* RX late error */ 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_QMASK_RXPERR 0x00000002 /* RX parity error */ 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CREG_QMASK_RXSERR 0x00000001 /* RX sbus error ack */ 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* BIGMAC core registers */ 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_XIFCFG 0x000UL /* XIF config register */ 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 0x004-->0x0fc, reserved */ 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_STATUS 0x100UL /* Status register, clear on read */ 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_IMASK 0x104UL /* Interrupt mask register */ 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 0x108-->0x204, reserved */ 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_TXSWRESET 0x208UL /* Transmitter software reset */ 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_TXCFG 0x20cUL /* Transmitter config register */ 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_IGAP1 0x210UL /* Inter-packet gap 1 */ 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_IGAP2 0x214UL /* Inter-packet gap 2 */ 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_ALIMIT 0x218UL /* Transmit attempt limit */ 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_STIME 0x21cUL /* Transmit slot time */ 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_PLEN 0x220UL /* Size of transmit preamble */ 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_PPAT 0x224UL /* Pattern for transmit preamble */ 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_TXDELIM 0x228UL /* Transmit delimiter */ 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_JSIZE 0x22cUL /* Toe jam... */ 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_TXPMAX 0x230UL /* Transmit max pkt size */ 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_TXPMIN 0x234UL /* Transmit min pkt size */ 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_PATTEMPT 0x238UL /* Count of transmit peak attempts */ 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_DTCTR 0x23cUL /* Transmit defer timer */ 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_NCCTR 0x240UL /* Transmit normal-collision counter */ 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_FCCTR 0x244UL /* Transmit first-collision counter */ 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_EXCTR 0x248UL /* Transmit excess-collision counter */ 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_LTCTR 0x24cUL /* Transmit late-collision counter */ 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_RSEED 0x250UL /* Transmit random number seed */ 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_TXSMACHINE 0x254UL /* Transmit state machine */ 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 0x258-->0x304, reserved */ 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_RXSWRESET 0x308UL /* Receiver software reset */ 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_RXCFG 0x30cUL /* Receiver config register */ 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_RXPMAX 0x310UL /* Receive max pkt size */ 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_RXPMIN 0x314UL /* Receive min pkt size */ 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_MACADDR2 0x318UL /* Ether address register 2 */ 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_MACADDR1 0x31cUL /* Ether address register 1 */ 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_MACADDR0 0x320UL /* Ether address register 0 */ 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_FRCTR 0x324UL /* Receive frame receive counter */ 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_GLECTR 0x328UL /* Receive giant-length error counter */ 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_UNALECTR 0x32cUL /* Receive unaligned error counter */ 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_RCRCECTR 0x330UL /* Receive CRC error counter */ 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_RXSMACHINE 0x334UL /* Receiver state machine */ 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_RXCVALID 0x338UL /* Receiver code violation */ 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 0x33c, reserved */ 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_HTABLE3 0x340UL /* Hash table 3 */ 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_HTABLE2 0x344UL /* Hash table 2 */ 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_HTABLE1 0x348UL /* Hash table 1 */ 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_HTABLE0 0x34cUL /* Hash table 0 */ 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_AFILTER2 0x350UL /* Address filter 2 */ 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_AFILTER1 0x354UL /* Address filter 1 */ 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_AFILTER0 0x358UL /* Address filter 0 */ 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_AFMASK 0x35cUL /* Address filter mask */ 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BMAC_REG_SIZE 0x360UL 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* BigMac XIF config register. */ 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_XCFG_ODENABLE 0x00000001 /* Output driver enable */ 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_XCFG_RESV 0x00000002 /* Reserved, write always as 1 */ 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_XCFG_MLBACK 0x00000004 /* Loopback-mode MII enable */ 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_XCFG_SMODE 0x00000008 /* Enable serial mode */ 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* BigMAC status register. */ 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_GOTFRAME 0x00000001 /* Received a frame */ 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_RCNTEXP 0x00000002 /* Receive frame counter expired */ 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_ACNTEXP 0x00000004 /* Align-error counter expired */ 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_CCNTEXP 0x00000008 /* CRC-error counter expired */ 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_LCNTEXP 0x00000010 /* Length-error counter expired */ 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_RFIFOVF 0x00000020 /* Receive FIFO overflow */ 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_CVCNTEXP 0x00000040 /* Code-violation counter expired */ 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_SENTFRAME 0x00000100 /* Transmitted a frame */ 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_TFIFO_UND 0x00000200 /* Transmit FIFO underrun */ 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_MAXPKTERR 0x00000400 /* Max-packet size error */ 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_NCNTEXP 0x00000800 /* Normal-collision counter expired */ 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_ECNTEXP 0x00001000 /* Excess-collision counter expired */ 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_LCCNTEXP 0x00002000 /* Late-collision counter expired */ 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_FCNTEXP 0x00004000 /* First-collision counter expired */ 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_STAT_DTIMEXP 0x00008000 /* Defer-timer expired */ 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* BigMAC interrupt mask register. */ 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_GOTFRAME 0x00000001 /* Received a frame */ 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_RCNTEXP 0x00000002 /* Receive frame counter expired */ 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_ACNTEXP 0x00000004 /* Align-error counter expired */ 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_CCNTEXP 0x00000008 /* CRC-error counter expired */ 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_LCNTEXP 0x00000010 /* Length-error counter expired */ 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_RFIFOVF 0x00000020 /* Receive FIFO overflow */ 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_CVCNTEXP 0x00000040 /* Code-violation counter expired */ 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_SENTFRAME 0x00000100 /* Transmitted a frame */ 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_TFIFO_UND 0x00000200 /* Transmit FIFO underrun */ 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_MAXPKTERR 0x00000400 /* Max-packet size error */ 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_NCNTEXP 0x00000800 /* Normal-collision counter expired */ 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_ECNTEXP 0x00001000 /* Excess-collision counter expired */ 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_LCCNTEXP 0x00002000 /* Late-collision counter expired */ 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_FCNTEXP 0x00004000 /* First-collision counter expired */ 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_IMASK_DTIMEXP 0x00008000 /* Defer-timer expired */ 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* BigMac transmit config register. */ 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_TXCFG_ENABLE 0x00000001 /* Enable the transmitter */ 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_TXCFG_FIFO 0x00000010 /* Default tx fthresh... */ 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_TXCFG_SMODE 0x00000020 /* Enable slow transmit mode */ 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_TXCFG_CIGN 0x00000040 /* Ignore transmit collisions */ 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_TXCFG_FCSOFF 0x00000080 /* Do not emit FCS */ 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_TXCFG_DBACKOFF 0x00000100 /* Disable backoff */ 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_TXCFG_FULLDPLX 0x00000200 /* Enable full-duplex */ 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* BigMac receive config register. */ 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_RXCFG_ENABLE 0x00000001 /* Enable the receiver */ 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_RXCFG_FIFO 0x0000000e /* Default rx fthresh... */ 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_RXCFG_PSTRIP 0x00000020 /* Pad byte strip enable */ 18825985edcedea6396277003854657b5f3cb31a628Lucas De Marchi#define BIGMAC_RXCFG_PMISC 0x00000040 /* Enable promiscuous mode */ 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_RXCFG_DERR 0x00000080 /* Disable error checking */ 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_RXCFG_DCRCS 0x00000100 /* Disable CRC stripping */ 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_RXCFG_ME 0x00000200 /* Receive packets addressed to me */ 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_RXCFG_PGRP 0x00000400 /* Enable promisc group mode */ 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_RXCFG_HENABLE 0x00000800 /* Enable the hash filter */ 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_RXCFG_AENABLE 0x00001000 /* Enable the address filter */ 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* The BigMAC PHY transceiver. Not nearly as sophisticated as the happy meal 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * one. But it does have the "bit banger", oh baby. 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TCVR_TPAL 0x00UL 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TCVR_MPAL 0x04UL 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TCVR_REG_SIZE 0x08UL 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Frame commands. */ 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FRAME_WRITE 0x50020000 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FRAME_READ 0x60020000 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Tranceiver registers. */ 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TCVR_PAL_SERIAL 0x00000001 /* Enable serial mode */ 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TCVR_PAL_EXTLBACK 0x00000002 /* Enable external loopback */ 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TCVR_PAL_MSENSE 0x00000004 /* Media sense */ 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TCVR_PAL_LTENABLE 0x00000008 /* Link test enable */ 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TCVR_PAL_LTSTATUS 0x00000010 /* Link test status (P1 only) */ 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Management PAL. */ 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MGMT_PAL_DCLOCK 0x00000001 /* Data clock */ 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MGMT_PAL_OENAB 0x00000002 /* Output enabler */ 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MGMT_PAL_MDIO 0x00000004 /* MDIO Data/attached */ 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MGMT_PAL_TIMEO 0x00000008 /* Transmit enable timeout error */ 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MGMT_PAL_EXT_MDIO MGMT_PAL_MDIO 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MGMT_PAL_INT_MDIO MGMT_PAL_TIMEO 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Here are some PHY addresses. */ 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_PHY_EXTERNAL 0 /* External transceiver */ 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BIGMAC_PHY_INTERNAL 1 /* Internal transceiver */ 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Ring descriptors and such, same as Quad Ethernet. */ 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct be_rxd { 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 rx_flags; 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 rx_addr; 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RXD_OWN 0x80000000 /* Ownership. */ 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RXD_UPDATE 0x10000000 /* Being Updated? */ 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RXD_LENGTH 0x000007ff /* Packet Length. */ 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct be_txd { 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 tx_flags; 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 tx_addr; 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXD_OWN 0x80000000 /* Ownership. */ 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXD_SOP 0x40000000 /* Start Of Packet */ 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXD_EOP 0x20000000 /* End Of Packet */ 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXD_UPDATE 0x10000000 /* Being Updated? */ 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TXD_LENGTH 0x000007ff /* Packet Length. */ 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TX_RING_MAXSIZE 256 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RX_RING_MAXSIZE 256 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TX_RING_SIZE 256 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RX_RING_SIZE 256 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NEXT_RX(num) (((num) + 1) & (RX_RING_SIZE - 1)) 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define NEXT_TX(num) (((num) + 1) & (TX_RING_SIZE - 1)) 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PREV_RX(num) (((num) - 1) & (RX_RING_SIZE - 1)) 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PREV_TX(num) (((num) - 1) & (TX_RING_SIZE - 1)) 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define TX_BUFFS_AVAIL(bp) \ 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (((bp)->tx_old <= (bp)->tx_new) ? \ 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (bp)->tx_old + (TX_RING_SIZE - 1) - (bp)->tx_new : \ 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (bp)->tx_old - (bp)->tx_new - 1) 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RX_COPY_THRESHOLD 256 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RX_BUF_ALLOC_SIZE (ETH_FRAME_LEN + (64 * 3)) 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct bmac_init_block { 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct be_rxd be_rxd[RX_RING_MAXSIZE]; 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct be_txd be_txd[TX_RING_MAXSIZE]; 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define bib_offset(mem, elem) \ 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds((__u32)((unsigned long)(&(((struct bmac_init_block *)0)->mem[elem])))) 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Now software state stuff. */ 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsenum bigmac_transceiver { 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds external = 0, 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds internal = 1, 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds none = 2, 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Timer state engine. */ 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsenum bigmac_timer_state { 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ltrywait = 1, /* Forcing try of all modes, from fastest to slowest. */ 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds asleep = 2, /* Timer inactive. */ 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct bigmac { 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *gregs; /* QEC Global Registers */ 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *creg; /* QEC BigMAC Channel Registers */ 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *bregs; /* BigMAC Registers */ 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void __iomem *tregs; /* BigMAC Transceiver */ 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct bmac_init_block *bmac_block; /* RX and TX descriptors */ 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u32 bblock_dvma; /* RX and TX descriptors */ 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t lock; 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct sk_buff *rx_skbs[RX_RING_SIZE]; 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct sk_buff *tx_skbs[TX_RING_SIZE]; 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rx_new, tx_new, rx_old, tx_old; 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int board_rev; /* BigMAC board revision. */ 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum bigmac_transceiver tcvr_type; 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int bigmac_bursts; 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int paddr; 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short sw_bmsr; /* SW copy of PHY BMSR */ 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned short sw_bmcr; /* SW copy of PHY BMCR */ 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timer_list bigmac_timer; 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum bigmac_timer_state timer_state; 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int timer_ticks; 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device_stats enet_stats; 3152dc11581376829303b98eadb2de253bee065a56aGrant Likely struct platform_device *qec_op; 3162dc11581376829303b98eadb2de253bee065a56aGrant Likely struct platform_device *bigmac_op; 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct net_device *dev; 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* We use this to acquire receive skb's that we can DMA directly into. */ 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define ALIGNED_RX_SKB_ADDR(addr) \ 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((((unsigned long)(addr) + (64 - 1)) & ~(64 - 1)) - (unsigned long)(addr)) 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3249e24974db6b01ec067c24de09588282b6a1407f0Al Virostatic inline struct sk_buff *big_mac_alloc_skb(unsigned int length, gfp_t gfp_flags) 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct sk_buff *skb; 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skb = alloc_skb(length + 64, gfp_flags); 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(skb) { 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int offset = ALIGNED_RX_SKB_ADDR(skb->data); 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if(offset) 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds skb_reserve(skb, offset); 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return skb; 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif /* !(_SUNBMAC_H) */ 339