5aa0576b33
Submitted by: Gordon Bergling <gbergling_gmail.com> Differential Revision: https://reviews.freebsd.org/D23453
212 lines
7.2 KiB
C
212 lines
7.2 KiB
C
/* $NetBSD: lancevar.h,v 1.10 2005/12/11 12:21:27 christos Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-NetBSD
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*
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* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
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* Simulation Facility, NASA Ames Research Center.
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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. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* $FreeBSD$ */
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#ifndef _DEV_LE_LANCEVAR_H_
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#define _DEV_LE_LANCEVAR_H_
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extern devclass_t le_devclass;
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struct lance_softc {
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struct ifnet *sc_ifp;
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struct ifmedia sc_media;
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struct mtx sc_mtx;
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struct callout sc_wdog_ch;
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int sc_wdog_timer;
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/*
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* Memory functions:
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*
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* copy to/from descriptor
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* copy to/from buffer
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* zero bytes in buffer
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*/
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void (*sc_copytodesc)(struct lance_softc *, void *, int, int);
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void (*sc_copyfromdesc)(struct lance_softc *, void *, int, int);
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void (*sc_copytobuf)(struct lance_softc *, void *, int, int);
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void (*sc_copyfrombuf)(struct lance_softc *, void *, int, int);
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void (*sc_zerobuf)(struct lance_softc *, int, int);
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/*
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* Machine-dependent functions:
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*
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* read/write CSR
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* hardware reset hook - may be NULL
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* hardware init hook - may be NULL
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* no carrier hook - may be NULL
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* media change hook - may be NULL
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*/
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uint16_t (*sc_rdcsr)(struct lance_softc *, uint16_t);
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void (*sc_wrcsr)(struct lance_softc *, uint16_t, uint16_t);
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void (*sc_hwreset)(struct lance_softc *);
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void (*sc_hwinit)(struct lance_softc *);
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int (*sc_hwintr)(struct lance_softc *);
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void (*sc_nocarrier)(struct lance_softc *);
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int (*sc_mediachange)(struct lance_softc *);
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void (*sc_mediastatus)(struct lance_softc *, struct ifmediareq *);
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/*
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* Media-supported by this interface. If this is NULL,
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* the only supported media is assumed to be "manual".
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*/
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const int *sc_supmedia;
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int sc_nsupmedia;
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int sc_defaultmedia;
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uint16_t sc_conf3; /* CSR3 value */
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void *sc_mem; /* base address of RAM - CPU's view */
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bus_addr_t sc_addr; /* base address of RAM - LANCE's view */
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bus_size_t sc_memsize; /* size of RAM */
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int sc_nrbuf; /* number of receive buffers */
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int sc_ntbuf; /* number of transmit buffers */
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int sc_last_rd;
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int sc_first_td;
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int sc_last_td;
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int sc_no_td;
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int sc_initaddr;
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int sc_rmdaddr;
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int sc_tmdaddr;
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int sc_rbufaddr;
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int sc_tbufaddr;
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uint8_t sc_enaddr[ETHER_ADDR_LEN];
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void (*sc_meminit)(struct lance_softc *);
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void (*sc_start_locked)(struct lance_softc *);
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int sc_flags;
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#define LE_ALLMULTI (1 << 0)
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#define LE_BSWAP (1 << 1)
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#define LE_CARRIER (1 << 2)
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#define LE_DEBUG (1 << 3)
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#define LE_PROMISC (1 << 4)
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};
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#define LE_LOCK_INIT(_sc, _name) \
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mtx_init(&(_sc)->sc_mtx, _name, MTX_NETWORK_LOCK, MTX_DEF)
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#define LE_LOCK_INITIALIZED(_sc) mtx_initialized(&(_sc)->sc_mtx)
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#define LE_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
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#define LE_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
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#define LE_LOCK_ASSERT(_sc, _what) mtx_assert(&(_sc)->sc_mtx, (_what))
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#define LE_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_mtx)
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/*
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* Unfortunately, manual byte swapping is only necessary for the PCnet-PCI
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* variants but not for the original LANCE or ILACC so we cannot do this
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* with #ifdefs resolved at compile time.
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*/
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#define LE_HTOLE16(v) (((sc)->sc_flags & LE_BSWAP) ? htole16(v) : (v))
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#define LE_HTOLE32(v) (((sc)->sc_flags & LE_BSWAP) ? htole32(v) : (v))
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#define LE_LE16TOH(v) (((sc)->sc_flags & LE_BSWAP) ? le16toh(v) : (v))
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#define LE_LE32TOH(v) (((sc)->sc_flags & LE_BSWAP) ? le32toh(v) : (v))
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int lance_config(struct lance_softc *, const char*, int);
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void lance_attach(struct lance_softc *);
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void lance_detach(struct lance_softc *);
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void lance_suspend(struct lance_softc *);
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void lance_resume(struct lance_softc *);
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void lance_init_locked(struct lance_softc *);
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int lance_put(struct lance_softc *, int, struct mbuf *);
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struct mbuf *lance_get(struct lance_softc *, int, int);
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void lance_setladrf(struct lance_softc *, u_int16_t *);
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/*
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* The following functions are only useful on certain CPU/bus
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* combinations. They should be written in assembly language for
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* maximum efficiency, but machine-independent versions are provided
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* for drivers that have not yet been optimized.
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*/
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void lance_copytobuf_contig(struct lance_softc *, void *, int, int);
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void lance_copyfrombuf_contig(struct lance_softc *, void *, int, int);
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void lance_zerobuf_contig(struct lance_softc *, int, int);
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#if 0 /* Example only - see lance.c */
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void lance_copytobuf_gap2(struct lance_softc *, void *, int, int);
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void lance_copyfrombuf_gap2(struct lance_softc *, void *, int, int);
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void lance_zerobuf_gap2(struct lance_softc *, int, int);
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void lance_copytobuf_gap16(struct lance_softc *, void *, int, int);
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void lance_copyfrombuf_gap16(struct lance_softc *, void *, int, int);
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void lance_zerobuf_gap16(struct lance_softc *, int, int);
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#endif /* Example only */
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/*
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* Compare two Ether/802 addresses for equality, inlined and
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* unrolled for speed. Use this like memcmp().
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*
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* XXX: Add <machine/inlines.h> for stuff like this?
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* XXX: or maybe add it to libkern.h instead?
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*
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* "I'd love to have an inline assembler version of this."
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* XXX: Who wanted that? mycroft? I wrote one, but this
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* version in C is as good as hand-coded assembly. -gwr
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*
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* Please do NOT tweak this without looking at the actual
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* assembly code generated before and after your tweaks!
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*/
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static inline uint16_t
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ether_cmp(void *one, void *two)
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{
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uint16_t *a = (u_short *)one;
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uint16_t *b = (u_short *)two;
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uint16_t diff;
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#ifdef m68k
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/*
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* The post-increment-pointer form produces the best
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* machine code for m68k. This was carefully tuned
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* so it compiles to just 8 short (2-byte) op-codes!
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*/
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diff = *a++ - *b++;
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diff |= *a++ - *b++;
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diff |= *a++ - *b++;
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#else
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/*
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* Most modern CPUs do better with a single expression.
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* Note that short-cut evaluation is NOT helpful here,
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* because it just makes the code longer, not faster!
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*/
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diff = (a[0] - b[0]) | (a[1] - b[1]) | (a[2] - b[2]);
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#endif
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return (diff);
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}
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#endif /* _DEV_LE_LANCEVAR_H_ */
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