1/* $NetBSD: lancevar.h,v 1.10 2005/12/11 12:21:27 christos Exp $ */ 2 3/*- 4 * SPDX-License-Identifier: BSD-2-Clause-NetBSD 5 * 6 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace 11 * Simulation Facility, NASA Ames Research Center. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35/* $FreeBSD$ */ 36 37#ifndef _DEV_LE_LANCEVAR_H_ 38#define _DEV_LE_LANCEVAR_H_ 39 40extern devclass_t le_devclass; 41 42struct lance_softc { 43 struct ifnet *sc_ifp; 44 struct ifmedia sc_media; 45 struct mtx sc_mtx; 46 struct callout sc_wdog_ch; 47 int sc_wdog_timer; 48 49 /* 50 * Memory functions: 51 * 52 * copy to/from descriptor 53 * copy to/from buffer 54 * zero bytes in buffer 55 */ 56 void (*sc_copytodesc)(struct lance_softc *, void *, int, int); 57 void (*sc_copyfromdesc)(struct lance_softc *, void *, int, int); 58 void (*sc_copytobuf)(struct lance_softc *, void *, int, int); 59 void (*sc_copyfrombuf)(struct lance_softc *, void *, int, int); 60 void (*sc_zerobuf)(struct lance_softc *, int, int); 61 62 /* 63 * Machine-dependent functions: 64 * 65 * read/write CSR 66 * hardware reset hook - may be NULL 67 * hardware init hook - may be NULL 68 * no carrier hook - may be NULL 69 * media change hook - may be NULL 70 */ 71 uint16_t (*sc_rdcsr)(struct lance_softc *, uint16_t); 72 void (*sc_wrcsr)(struct lance_softc *, uint16_t, uint16_t); 73 void (*sc_hwreset)(struct lance_softc *); 74 void (*sc_hwinit)(struct lance_softc *); 75 int (*sc_hwintr)(struct lance_softc *); 76 void (*sc_nocarrier)(struct lance_softc *); 77 int (*sc_mediachange)(struct lance_softc *); 78 void (*sc_mediastatus)(struct lance_softc *, struct ifmediareq *); 79 80 /* 81 * Media-supported by this interface. If this is NULL, 82 * the only supported media is assumed to be "manual". 83 */ 84 const int *sc_supmedia; 85 int sc_nsupmedia; 86 int sc_defaultmedia; 87 88 uint16_t sc_conf3; /* CSR3 value */ 89 90 void *sc_mem; /* base address of RAM - CPU's view */ 91 bus_addr_t sc_addr; /* base address of RAM - LANCE's view */ 92 93 bus_size_t sc_memsize; /* size of RAM */ 94 95 int sc_nrbuf; /* number of receive buffers */ 96 int sc_ntbuf; /* number of transmit buffers */ 97 int sc_last_rd; 98 int sc_first_td; 99 int sc_last_td; 100 int sc_no_td; 101 102 int sc_initaddr; 103 int sc_rmdaddr; 104 int sc_tmdaddr; 105 int sc_rbufaddr; 106 int sc_tbufaddr; 107 108 uint8_t sc_enaddr[ETHER_ADDR_LEN]; 109 110 void (*sc_meminit)(struct lance_softc *); 111 void (*sc_start_locked)(struct lance_softc *); 112 113 int sc_flags; 114#define LE_ALLMULTI (1 << 0) 115#define LE_BSWAP (1 << 1) 116#define LE_CARRIER (1 << 2) 117#define LE_DEBUG (1 << 3) 118#define LE_PROMISC (1 << 4) 119}; 120 121#define LE_LOCK_INIT(_sc, _name) \ 122 mtx_init(&(_sc)->sc_mtx, _name, MTX_NETWORK_LOCK, MTX_DEF) 123#define LE_LOCK_INITIALIZED(_sc) mtx_initialized(&(_sc)->sc_mtx) 124#define LE_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx) 125#define LE_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx) 126#define LE_LOCK_ASSERT(_sc, _what) mtx_assert(&(_sc)->sc_mtx, (_what)) 127#define LE_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_mtx) 128 129/* 130 * Unfortunately, manual byte swapping is only necessary for the PCnet-PCI 131 * variants but not for the original LANCE or ILACC so we cannot do this 132 * with #ifdefs resolved at compile time. 133 */ 134#define LE_HTOLE16(v) (((sc)->sc_flags & LE_BSWAP) ? htole16(v) : (v)) 135#define LE_HTOLE32(v) (((sc)->sc_flags & LE_BSWAP) ? htole32(v) : (v)) 136#define LE_LE16TOH(v) (((sc)->sc_flags & LE_BSWAP) ? le16toh(v) : (v)) 137#define LE_LE32TOH(v) (((sc)->sc_flags & LE_BSWAP) ? le32toh(v) : (v)) 138 139int lance_config(struct lance_softc *, const char*, int); 140void lance_attach(struct lance_softc *); 141void lance_detach(struct lance_softc *); 142void lance_suspend(struct lance_softc *); 143void lance_resume(struct lance_softc *); 144void lance_init_locked(struct lance_softc *); 145int lance_put(struct lance_softc *, int, struct mbuf *); 146struct mbuf *lance_get(struct lance_softc *, int, int); 147void lance_setladrf(struct lance_softc *, u_int16_t *); 148 149/* 150 * The following functions are only useful on certain CPU/bus 151 * combinations. They should be written in assembly language for 152 * maximum efficiency, but machine-independent versions are provided 153 * for drivers that have not yet been optimized. 154 */ 155void lance_copytobuf_contig(struct lance_softc *, void *, int, int); 156void lance_copyfrombuf_contig(struct lance_softc *, void *, int, int); 157void lance_zerobuf_contig(struct lance_softc *, int, int); 158 159#if 0 /* Example only - see lance.c */ 160void lance_copytobuf_gap2(struct lance_softc *, void *, int, int); 161void lance_copyfrombuf_gap2(struct lance_softc *, void *, int, int); 162void lance_zerobuf_gap2(struct lance_softc *, int, int); 163 164void lance_copytobuf_gap16(struct lance_softc *, void *, int, int); 165void lance_copyfrombuf_gap16(struct lance_softc *, void *, int, int); 166void lance_zerobuf_gap16(struct lance_softc *, int, int); 167#endif /* Example only */ 168 169/* 170 * Compare two Ether/802 addresses for equality, inlined and 171 * unrolled for speed. Use this like memcmp(). 172 * 173 * XXX: Add <machine/inlines.h> for stuff like this? 174 * XXX: or maybe add it to libkern.h instead? 175 * 176 * "I'd love to have an inline assembler version of this." 177 * XXX: Who wanted that? mycroft? I wrote one, but this 178 * version in C is as good as hand-coded assembly. -gwr 179 * 180 * Please do NOT tweak this without looking at the actual 181 * assembly code generated before and after your tweaks! 182 */ 183static inline uint16_t 184ether_cmp(void *one, void *two) 185{ 186 uint16_t *a = (u_short *)one; 187 uint16_t *b = (u_short *)two; 188 uint16_t diff; 189 190#ifdef m68k 191 /* 192 * The post-increment-pointer form produces the best 193 * machine code for m68k. This was carefully tuned 194 * so it compiles to just 8 short (2-byte) op-codes! 195 */ 196 diff = *a++ - *b++; 197 diff |= *a++ - *b++; 198 diff |= *a++ - *b++; 199#else 200 /* 201 * Most modern CPUs do better with a single expression. 202 * Note that short-cut evaluation is NOT helpful here, 203 * because it just makes the code longer, not faster! 204 */ 205 diff = (a[0] - b[0]) | (a[1] - b[1]) | (a[2] - b[2]); 206#endif 207 208 return (diff); 209} 210 211#endif /* _DEV_LE_LANCEVAR_H_ */ 212