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