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/* $NetBSD: lancevar.h,v 1.10 2005/12/11 12:21:27 christos Exp $ */
/*-
* 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.
*/
/* $FreeBSD$ */
#ifndef _DEV_LE_LANCEVAR_H_
#define _DEV_LE_LANCEVAR_H_
extern devclass_t le_devclass;
struct lance_softc {
struct ifnet *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)
};
#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 expresion.
* 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_ */
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