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Diffstat (limited to 'bsd_eth_drivers/if_le/lancevar.h')
| -rw-r--r-- | bsd_eth_drivers/if_le/lancevar.h | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/bsd_eth_drivers/if_le/lancevar.h b/bsd_eth_drivers/if_le/lancevar.h new file mode 100644 index 0000000..d107c3b --- /dev/null +++ b/bsd_eth_drivers/if_le/lancevar.h @@ -0,0 +1,216 @@ +/* $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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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: src/sys/dev/le/lancevar.h,v 1.3 2006/12/06 02:14:31 marius Exp $ */ + +#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_ */ |