/* $NetBSD: lancevar.h,v 1.10 2005/12/11 12:21:27 christos Exp $ */ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace * Simulation Facility, NASA Ames Research Center. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef _DEV_LE_LANCEVAR_H_ #define _DEV_LE_LANCEVAR_H_ struct lance_softc { if_t sc_ifp; struct ifmedia sc_media; struct mtx sc_mtx; struct callout sc_wdog_ch; int sc_wdog_timer; /* * Memory functions: * * copy to/from descriptor * copy to/from buffer * zero bytes in buffer */ void (*sc_copytodesc)(struct lance_softc *, void *, int, int); void (*sc_copyfromdesc)(struct lance_softc *, void *, int, int); void (*sc_copytobuf)(struct lance_softc *, void *, int, int); void (*sc_copyfrombuf)(struct lance_softc *, void *, int, int); void (*sc_zerobuf)(struct lance_softc *, int, int); /* * Machine-dependent functions: * * read/write CSR * hardware reset hook - may be NULL * hardware init hook - may be NULL * no carrier hook - may be NULL * media change hook - may be NULL */ uint16_t (*sc_rdcsr)(struct lance_softc *, uint16_t); void (*sc_wrcsr)(struct lance_softc *, uint16_t, uint16_t); void (*sc_hwreset)(struct lance_softc *); void (*sc_hwinit)(struct lance_softc *); int (*sc_hwintr)(struct lance_softc *); void (*sc_nocarrier)(struct lance_softc *); int (*sc_mediachange)(struct lance_softc *); void (*sc_mediastatus)(struct lance_softc *, struct ifmediareq *); /* * Media-supported by this interface. If this is NULL, * the only supported media is assumed to be "manual". */ const int *sc_supmedia; int sc_nsupmedia; int sc_defaultmedia; uint16_t sc_conf3; /* CSR3 value */ void *sc_mem; /* base address of RAM - CPU's view */ bus_addr_t sc_addr; /* base address of RAM - LANCE's view */ bus_size_t sc_memsize; /* size of RAM */ int sc_nrbuf; /* number of receive buffers */ int sc_ntbuf; /* number of transmit buffers */ int sc_last_rd; int sc_first_td; int sc_last_td; int sc_no_td; int sc_initaddr; int sc_rmdaddr; int sc_tmdaddr; int sc_rbufaddr; int sc_tbufaddr; uint8_t sc_enaddr[ETHER_ADDR_LEN]; void (*sc_meminit)(struct lance_softc *); void (*sc_start_locked)(struct lance_softc *); int sc_flags; #define LE_ALLMULTI (1 << 0) #define LE_BSWAP (1 << 1) #define LE_CARRIER (1 << 2) #define LE_DEBUG (1 << 3) #define LE_PROMISC (1 << 4) #ifdef __HAIKU__ uint16_t sc_lastisr; #endif }; #define LE_LOCK_INIT(_sc, _name) \ mtx_init(&(_sc)->sc_mtx, _name, MTX_NETWORK_LOCK, MTX_DEF) #define LE_LOCK_INITIALIZED(_sc) mtx_initialized(&(_sc)->sc_mtx) #define LE_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx) #define LE_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx) #define LE_LOCK_ASSERT(_sc, _what) mtx_assert(&(_sc)->sc_mtx, (_what)) #define LE_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_mtx) /* * Unfortunately, manual byte swapping is only necessary for the PCnet-PCI * variants but not for the original LANCE or ILACC so we cannot do this * with #ifdefs resolved at compile time. */ #define LE_HTOLE16(v) (((sc)->sc_flags & LE_BSWAP) ? htole16(v) : (v)) #define LE_HTOLE32(v) (((sc)->sc_flags & LE_BSWAP) ? htole32(v) : (v)) #define LE_LE16TOH(v) (((sc)->sc_flags & LE_BSWAP) ? le16toh(v) : (v)) #define LE_LE32TOH(v) (((sc)->sc_flags & LE_BSWAP) ? le32toh(v) : (v)) int lance_config(struct lance_softc *, const char*, int); void lance_attach(struct lance_softc *); void lance_detach(struct lance_softc *); void lance_suspend(struct lance_softc *); void lance_resume(struct lance_softc *); void lance_init_locked(struct lance_softc *); int lance_put(struct lance_softc *, int, struct mbuf *); struct mbuf *lance_get(struct lance_softc *, int, int); void lance_setladrf(struct lance_softc *, u_int16_t *); /* * The following functions are only useful on certain CPU/bus * combinations. They should be written in assembly language for * maximum efficiency, but machine-independent versions are provided * for drivers that have not yet been optimized. */ void lance_copytobuf_contig(struct lance_softc *, void *, int, int); void lance_copyfrombuf_contig(struct lance_softc *, void *, int, int); void lance_zerobuf_contig(struct lance_softc *, int, int); #if 0 /* Example only - see lance.c */ void lance_copytobuf_gap2(struct lance_softc *, void *, int, int); void lance_copyfrombuf_gap2(struct lance_softc *, void *, int, int); void lance_zerobuf_gap2(struct lance_softc *, int, int); void lance_copytobuf_gap16(struct lance_softc *, void *, int, int); void lance_copyfrombuf_gap16(struct lance_softc *, void *, int, int); void lance_zerobuf_gap16(struct lance_softc *, int, int); #endif /* Example only */ /* * Compare two Ether/802 addresses for equality, inlined and * unrolled for speed. Use this like memcmp(). * * XXX: Add <machine/inlines.h> for stuff like this? * XXX: or maybe add it to libkern.h instead? * * "I'd love to have an inline assembler version of this." * XXX: Who wanted that? mycroft? I wrote one, but this * version in C is as good as hand-coded assembly. -gwr * * Please do NOT tweak this without looking at the actual * assembly code generated before and after your tweaks! */ static inline uint16_t ether_cmp(void *one, void *two) { uint16_t *a = (u_short *)one; uint16_t *b = (u_short *)two; uint16_t diff; #ifdef m68k /* * The post-increment-pointer form produces the best * machine code for m68k. This was carefully tuned * so it compiles to just 8 short (2-byte) op-codes! */ diff = *a++ - *b++; diff |= *a++ - *b++; diff |= *a++ - *b++; #else /* * Most modern CPUs do better with a single expression. * Note that short-cut evaluation is NOT helpful here, * because it just makes the code longer, not faster! */ diff = (a[0] - b[0]) | (a[1] - b[1]) | (a[2] - b[2]); #endif return (diff); } #endif /* _DEV_LE_LANCEVAR_H_ */
