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493 lines
16 KiB
C
493 lines
16 KiB
C
/*-
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* Copyright (c) 1994-1997 Matt Thomas (matt@3am-software.com)
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* Copyright (c) LAN Media Corporation 1998, 1999.
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* Copyright (c) 2000 Stephen Kiernan (sk-ports@vegamuse.org)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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* From NetBSD: if_devar.h,v 1.21 1997/10/16 22:02:32 matt Exp
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* $Id: if_lmcvar.h,v 1.6 1999/01/12 14:16:58 explorer Exp $
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*/
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#if !defined(_DEV_LMC_IF_LMCVAR_H)
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#define _DEV_LMC_IF_LMCVAR_H
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#define LMC_MTU 1500
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#define PPP_HEADER_LEN 4
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#define BIG_PACKET
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#if !defined(PCI_VENDOR_LMC)
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#define PCI_VENDOR_LMC 0x1376
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#endif
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#if !defined(PCI_PRODUCT_LMC_HSSI)
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#define PCI_PRODUCT_LMC_HSSI 0x0003
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#endif
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#if !defined(PCI_PRODUCT_LMC_DS3)
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#define PCI_PRODUCT_LMC_DS3 0x0004
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#endif
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#if !defined(PCI_PRODUCT_LMC_SSI)
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#define PCI_PRODUCT_LMC_SSI 0x0005
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#endif
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#if !defined(PCI_PRODUCT_LMC_T1)
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#define PCI_PRODUCT_LMC_T1 0x0006
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#endif
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#ifdef LMC_IOMAPPED
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#define LMC_EISA_CSRSIZE 16
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#define LMC_EISA_CSROFFSET 0
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#define LMC_PCI_CSRSIZE 8
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#define LMC_PCI_CSROFFSET 0
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typedef u_int16_t lmc_csrptr_t;
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#define LMC_CSR_READ(sc, csr) (inl((sc)->lmc_csrs.csr))
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#define LMC_CSR_WRITE(sc, csr, val) outl((sc)->lmc_csrs.csr, val)
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#define LMC_CSR_READBYTE(sc, csr) (inb((sc)->lmc_csrs.csr))
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#define LMC_CSR_WRITEBYTE(sc, csr, val) outb((sc)->lmc_csrs.csr, val)
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#else /* LMC_IOMAPPED */
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#define LMC_PCI_CSRSIZE 8
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#define LMC_PCI_CSROFFSET 0
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typedef volatile u_int32_t *lmc_csrptr_t;
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/*
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* macros to read and write CSRs. Note that the "0 +" in
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* READ_CSR is to prevent the macro from being an lvalue
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* and WRITE_CSR shouldn't be assigned from.
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*/
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#define LMC_CSR_READ(sc, csr) (0 + *(sc)->lmc_csrs.csr)
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#define LMC_CSR_WRITE(sc, csr, val) ((void)(*(sc)->lmc_csrs.csr = (val)))
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#endif /* LMC_IOMAPPED */
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/*
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* This structure contains "pointers" for the registers on
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* the various 21x4x chips. CSR0 through CSR8 are common
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* to all chips. After that, it gets messy...
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*/
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typedef struct {
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lmc_csrptr_t csr_busmode; /* CSR0 */
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lmc_csrptr_t csr_txpoll; /* CSR1 */
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lmc_csrptr_t csr_rxpoll; /* CSR2 */
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lmc_csrptr_t csr_rxlist; /* CSR3 */
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lmc_csrptr_t csr_txlist; /* CSR4 */
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lmc_csrptr_t csr_status; /* CSR5 */
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lmc_csrptr_t csr_command; /* CSR6 */
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lmc_csrptr_t csr_intr; /* CSR7 */
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lmc_csrptr_t csr_missed_frames; /* CSR8 */
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lmc_csrptr_t csr_9; /* CSR9 */
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lmc_csrptr_t csr_10; /* CSR10 */
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lmc_csrptr_t csr_11; /* CSR11 */
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lmc_csrptr_t csr_12; /* CSR12 */
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lmc_csrptr_t csr_13; /* CSR13 */
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lmc_csrptr_t csr_14; /* CSR14 */
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lmc_csrptr_t csr_15; /* CSR15 */
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} lmc_regfile_t;
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#define csr_enetrom csr_9 /* 21040 */
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#define csr_reserved csr_10 /* 21040 */
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#define csr_full_duplex csr_11 /* 21040 */
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#define csr_bootrom csr_10 /* 21041/21140A/?? */
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#define csr_gp csr_12 /* 21140* */
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#define csr_watchdog csr_15 /* 21140* */
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#define csr_gp_timer csr_11 /* 21041/21140* */
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#define csr_srom_mii csr_9 /* 21041/21140* */
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#define csr_sia_status csr_12 /* 2104x */
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#define csr_sia_connectivity csr_13 /* 2104x */
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#define csr_sia_tx_rx csr_14 /* 2104x */
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#define csr_sia_general csr_15 /* 2104x */
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/*
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* While 21x4x allows chaining of its descriptors, this driver
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* doesn't take advantage of it. We keep the descriptors in a
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* traditional FIFO ring.
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*/
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typedef struct {
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tulip_desc_t *ri_first; /* first entry in ring */
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tulip_desc_t *ri_last; /* one after last entry */
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tulip_desc_t *ri_nextin; /* next to processed by host */
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tulip_desc_t *ri_nextout; /* next to processed by adapter */
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int ri_max;
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int ri_free;
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} lmc_ringinfo_t;
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/*
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* The 21040 has a stupid restriction in that the receive
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* buffers must be longword aligned. But since Ethernet
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* headers are not a multiple of longwords in size this forces
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* the data to non-longword aligned. Since IP requires the
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* data to be longword aligned, we need to copy it after it has
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* been DMA'ed in our memory.
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*
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* Since we have to copy it anyways, we might as well as allocate
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* dedicated receive space for the input. This allows to use a
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* small receive buffer size and more ring entries to be able to
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* better keep with a flood of tiny Ethernet packets.
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*
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* The receive space MUST ALWAYS be a multiple of the page size.
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* And the number of receive descriptors multiplied by the size
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* of the receive buffers must equal the recevive space. This
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* is so that we can manipulate the page tables so that even if a
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* packet wraps around the end of the receive space, we can
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* treat it as virtually contiguous.
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*
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* The above used to be true (the stupid restriction is still true)
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* but we gone to directly DMA'ing into MBUFs (unless it's on an
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* architecture which can't handle unaligned accesses) because with
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* 100Mb/s cards the copying is just too much of a hit.
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*/
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#define LMC_RXDESCS 48
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#define LMC_TXDESCS 128
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#define LMC_RXQ_TARGET 32
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#if LMC_RXQ_TARGET >= LMC_RXDESCS
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#error LMC_RXQ_TARGET must be less than LMC_RXDESCS
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#endif
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#define LMC_RX_BUFLEN ((MCLBYTES < 2048 ? MCLBYTES : 2048) - 16)
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/*
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* The various controllers support. Technically the DE425 is just
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* a 21040 on EISA. But since it remarkably difference from normal
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* 21040s, we give it its own chip id.
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*/
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typedef enum {
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LMC_21140, LMC_21140A,
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LMC_CHIPID_UNKNOWN
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} lmc_chipid_t;
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#define LMC_BIT(b) (1L << ((int)(b)))
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typedef struct lmc_xinfo {
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u_int32_t Magic0; /* BEEFCAFE */
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u_int32_t PciCardType;
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u_int32_t PciSlotNumber; /* PCI slot number */
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u_int16_t DriverMajorVersion;
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u_int16_t DriverMinorVersion;
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u_int16_t DriverSubVersion;
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u_int16_t XilinxRevisionNumber;
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u_int16_t MaxFrameSize;
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u_int16_t t1_alarm1_status;
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u_int16_t t1_alarm2_status;
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int link_status;
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u_int32_t mii_reg16;
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u_int32_t Magic1; /* DEADBEEF */
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} LMC_XINFO;
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typedef struct {
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/*
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* Transmit Statistics
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*/
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u_int32_t dot3StatsSingleCollisionFrames;
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u_int32_t dot3StatsMultipleCollisionFrames;
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u_int32_t dot3StatsSQETestErrors;
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u_int32_t dot3StatsDeferredTransmissions;
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u_int32_t dot3StatsLateCollisions;
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u_int32_t dot3StatsExcessiveCollisions;
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u_int32_t dot3StatsCarrierSenseErrors;
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u_int32_t dot3StatsInternalMacTransmitErrors;
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u_int32_t dot3StatsInternalTransmitUnderflows; /* not in rfc1650! */
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u_int32_t dot3StatsInternalTransmitBabbles; /* not in rfc1650! */
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/*
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* Receive Statistics
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*/
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u_int32_t dot3StatsMissedFrames; /* not in rfc1650! */
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u_int32_t dot3StatsAlignmentErrors;
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u_int32_t dot3StatsFCSErrors;
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u_int32_t dot3StatsFrameTooLongs;
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u_int32_t dot3StatsInternalMacReceiveErrors;
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} lmc_dot3_stats_t;
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/*
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* Now to important stuff. This is softc structure (where does softc
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* come from??? No idea) for the tulip device.
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*
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*/
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struct lmc___softc {
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const char *lmc_name;
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int lmc_unit;
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u_int8_t lmc_enaddr[6]; /* yes, a small hack... */
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lmc_regfile_t lmc_csrs;
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volatile u_int32_t lmc_txtick;
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volatile u_int32_t lmc_rxtick;
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u_int32_t lmc_flags;
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u_int32_t lmc_features; /* static bits indicating features of chip */
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u_int32_t lmc_intrmask; /* our copy of csr_intr */
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u_int32_t lmc_cmdmode; /* our copy of csr_cmdmode */
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u_int32_t lmc_last_system_error : 3; /* last system error (only value is LMC_SYSTEMERROR is also set) */
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u_int32_t lmc_system_errors; /* number of system errors encountered */
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u_int32_t lmc_statusbits; /* status bits from CSR5 that may need to be printed */
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u_int8_t lmc_revinfo; /* revision of chip */
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u_int8_t lmc_cardtype; /* LMC_CARDTYPE_HSSI or ..._DS3 */
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u_int32_t lmc_gpio_io; /* state of in/out settings */
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u_int32_t lmc_gpio; /* state of outputs */
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u_int8_t lmc_gp;
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lmc_chipid_t lmc_chipid; /* type of chip we are using */
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u_int32_t lmc_miireg16;
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struct ifqueue lmc_txq;
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struct ifqueue lmc_rxq;
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lmc_dot3_stats_t lmc_dot3stats;
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lmc_ringinfo_t lmc_rxinfo;
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lmc_ringinfo_t lmc_txinfo;
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u_int8_t lmc_rombuf[128];
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lmc_media_t *lmc_media;
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lmc_ctl_t ictl;
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LMC_XINFO lmc_xinfo;
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u_int8_t lmc_pci_busno; /* needed for multiport boards */
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u_int8_t lmc_pci_devno; /* needed for multiport boards */
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tulip_desc_t *lmc_rxdescs;
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tulip_desc_t *lmc_txdescs;
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u_int32_t lmc_crcSize;
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char lmc_timing; /* for HSSI and SSI */
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u_int16_t t1_alarm1_status;
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u_int16_t t1_alarm2_status;
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int lmc_running;
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char lmc_nodename[NG_NODELEN + 1];
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int lmc_datahooks;
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node_p lmc_node;
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hook_p lmc_hook;
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hook_p lmc_debug_hook;
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struct ifqueue lmc_xmitq_hipri;
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struct ifqueue lmc_xmitq;
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struct callout_handle lmc_handle;
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char lmc_xmit_busy;
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int lmc_out_dog;
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u_long lmc_inbytes, lmc_outbytes; /* stats */
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u_long lmc_lastinbytes, lmc_lastoutbytes; /* a second ago */
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u_long lmc_inrate, lmc_outrate; /* highest rate seen */
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u_long lmc_inlast; /* last input N secs ago */
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u_long lmc_out_deficit; /* output since last input */
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u_long lmc_oerrors, lmc_ierrors;
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u_long lmc_opackets, lmc_ipackets;
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};
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#define LMC_DOG_HOLDOFF 6 /* dog holds off for 6 secs */
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#define LMC_QUITE_A_WHILE 300 /* 5 MINUTES */
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#define LMC_LOTS_OF_PACKETS 100
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/* Node type name and type cookie */
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#define NG_LMC_NODE_TYPE "lmc"
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#define NG_LMC_COOKIE 956095698
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/* Netgraph hooks */
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#define NG_LMC_HOOK_DEBUG "debug"
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#define NG_LMC_HOOK_CONTROL "control"
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#define NG_LMC_HOOK_RAW "rawdata"
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/* Netgraph commands understood by this node type */
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enum {
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NGM_LMC_SET_CTL = 1,
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NGM_LMC_GET_CTL,
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};
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/*
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* lmc_flags
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*/
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#define LMC_IFUP 0x00000001
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#define LMC_00000002 0x00000002
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#define LMC_00000004 0x00000004
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#define LMC_00000008 0x00000008
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#define LMC_00000010 0x00000010
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#define LMC_MODEMOK 0x00000020
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#define LMC_00000040 0x00000040
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#define LMC_00000080 0x00000080
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#define LMC_RXACT 0x00000100
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#define LMC_INRESET 0x00000200
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#define LMC_NEEDRESET 0x00000400
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#define LMC_00000800 0x00000800
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#define LMC_00001000 0x00001000
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#define LMC_00002000 0x00002000
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#define LMC_WANTTXSTART 0x00004000
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#define LMC_NEWTXTHRESH 0x00008000
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#define LMC_NOAUTOSENSE 0x00010000
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#define LMC_PRINTLINKUP 0x00020000
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#define LMC_LINKUP 0x00040000
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#define LMC_RXBUFSLOW 0x00080000
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#define LMC_NOMESSAGES 0x00100000
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#define LMC_SYSTEMERROR 0x00200000
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#define LMC_TIMEOUTPENDING 0x00400000
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#define LMC_00800000 0x00800000
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#define LMC_01000000 0x01000000
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#define LMC_02000000 0x02000000
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#define LMC_RXIGNORE 0x04000000
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#define LMC_08000000 0x08000000
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#define LMC_10000000 0x10000000
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#define LMC_20000000 0x20000000
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#define LMC_40000000 0x40000000
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#define LMC_80000000 0x80000000
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/*
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* lmc_features
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*/
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#define LMC_HAVE_GPR 0x00000001 /* have gp register (140[A]) */
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#define LMC_HAVE_RXBADOVRFLW 0x00000002 /* RX corrupts on overflow */
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#define LMC_HAVE_POWERMGMT 0x00000004 /* Snooze/sleep modes */
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#define LMC_HAVE_MII 0x00000008 /* Some medium on MII */
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#define LMC_HAVE_SIANWAY 0x00000010 /* SIA does NWAY */
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#define LMC_HAVE_DUALSENSE 0x00000020 /* SIA senses both AUI & TP */
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#define LMC_HAVE_SIAGP 0x00000040 /* SIA has a GP port */
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#define LMC_HAVE_BROKEN_HASH 0x00000080 /* Broken Multicast Hash */
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#define LMC_HAVE_ISVSROM 0x00000100 /* uses ISV SROM Format */
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#define LMC_HAVE_BASEROM 0x00000200 /* Board ROM can be cloned */
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#define LMC_HAVE_SLAVEDROM 0x00000400 /* Board ROM cloned */
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#define LMC_HAVE_SLAVEDINTR 0x00000800 /* Board slaved interrupt */
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#define LMC_HAVE_SHAREDINTR 0x00001000 /* Board shares interrupts */
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#define LMC_HAVE_OKROM 0x00002000 /* ROM was recognized */
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#define LMC_HAVE_NOMEDIA 0x00004000 /* did not detect any media */
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#define LMC_HAVE_STOREFWD 0x00008000 /* have CMD_STOREFWD */
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#define LMC_HAVE_SIA100 0x00010000 /* has LS100 in SIA status */
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static const char * const lmc_system_errors[] = {
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"parity error",
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"master abort",
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"target abort",
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"reserved #3",
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"reserved #4",
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"reserved #5",
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"reserved #6",
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"reserved #7",
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};
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static const char * const lmc_status_bits[] = {
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NULL,
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"transmit process stopped",
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NULL,
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"transmit jabber timeout",
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NULL,
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"transmit underflow",
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NULL,
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"receive underflow",
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"receive process stopped",
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"receive watchdog timeout",
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NULL,
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NULL,
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"link failure",
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NULL,
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NULL,
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};
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/*
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* This driver supports a maximum of 32 tulip boards.
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* This should be enough for the forseeable future.
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*/
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#define LMC_MAX_DEVICES 32
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typedef void ifnet_ret_t;
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typedef int ioctl_cmd_t;
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static lmc_softc_t *tulips[LMC_MAX_DEVICES];
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#define LMC_IFP_TO_SOFTC(ifp) ((lmc_softc_t *)((ifp)->if_softc))
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#define lmc_intrfunc_t void
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#define LMC_VOID_INTRFUNC
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#define IFF_NOTRAILERS 0
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#define CLBYTES PAGE_SIZE
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#define LMC_EADDR_FMT "%6D"
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#define LMC_EADDR_ARGS(addr) addr, ":"
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#define LMC_UNIT_TO_SOFTC(unit) (tulips[unit])
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#define LMC_BURSTSIZE(unit) pci_max_burst_len
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#define loudprintf if (bootverbose) printf
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#ifndef LMC_PRINTF_FMT
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#define LMC_PRINTF_FMT "%s%d"
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#endif
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#ifndef LMC_PRINTF_ARGS
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#define LMC_PRINTF_ARGS sc->lmc_name, sc->lmc_unit
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#endif
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#ifndef LMC_BURSTSIZE
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#define LMC_BURSTSIZE(unit) 3
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#endif
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#if !defined(lmc_intrfunc_t)
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#define lmc_intrfunc_t int
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#endif
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#if !defined(LMC_KVATOPHYS)
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#define LMC_KVATOPHYS(sc, va) vtophys(va)
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#endif
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#ifndef LMC_RAISESPL
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#define LMC_RAISESPL() splimp()
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#endif
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#ifndef LMC_RAISESOFTSPL
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#define LMC_RAISESOFTSPL() splnet()
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#endif
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#ifndef TULUP_RESTORESPL
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#define LMC_RESTORESPL(s) splx(s)
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#endif
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/*
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* While I think FreeBSD's 2.2 change to the bpf is a nice simplification,
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* it does add yet more conditional code to this driver. Sigh.
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*/
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#if !defined(LMC_BPF_MTAP) && NBPFILTER > 0
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#define LMC_BPF_MTAP(sc, m) bpf_mtap((sc)->lmc_bpf, m)
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#define LMC_BPF_TAP(sc, p, l) bpf_tap((sc)->lmc_bpf, p, l)
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#define LMC_BPF_ATTACH(sc) bpfattach(&(sc)->lmc_bpf, &(sc)->lmc_sppp.pp_if, DLT_PPP, PPP_HEADER_LEN)
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#endif
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/*
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* However, this change to FreeBSD I am much less enamored with.
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*/
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#if !defined(LMC_EADDR_FMT)
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#define LMC_EADDR_FMT "%s"
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#define LMC_EADDR_ARGS(addr) ether_sprintf(addr)
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#endif
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#define LMC_CRC32_POLY 0xEDB88320UL /* CRC-32 Poly -- Little Endian */
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#define LMC_MAX_TXSEG 30
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#define LMC_ADDREQUAL(a1, a2) \
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(((u_int16_t *)a1)[0] == ((u_int16_t *)a2)[0] \
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&& ((u_int16_t *)a1)[1] == ((u_int16_t *)a2)[1] \
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&& ((u_int16_t *)a1)[2] == ((u_int16_t *)a2)[2])
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#define LMC_ADDRBRDCST(a1) \
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(((u_int16_t *)a1)[0] == 0xFFFFU \
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&& ((u_int16_t *)a1)[1] == 0xFFFFU \
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&& ((u_int16_t *)a1)[2] == 0xFFFFU)
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typedef int lmc_spl_t;
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#endif /* !defined(_DEV_LMC_IF_LMCVAR_H) */
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