16d760f318
* Add a slot in the softc, ep_pktlenshift, to indicate that
a board implements ``large packets'' (FDDI-sized frames) and
therefore implicitly shifts the argument to packet-length commands
by two bits to fit a 13-bit length in an 11-bit command argument field.
* Change the reset of station-mask filterto be independent of bus-type
(e.g.,. for 3c515)
* Replace the "2044" constant used to disable TX threshold interrupts
on 3c509-generation cards with a #define. Use 2047 instead,
since that works on the large-packet cards (Vortex, Demon, Boomerang)
and 2044 doesn't.
* Add code to epconfing to probe for large-packet support,
set the softc appropriately, and shift packet sizes in commands
by ep_pktlenshift to compensate for the implicit shift.
* Tweak the epconfig() code to avoid hanging on startup.
Set the Tx threshold to interrupt when there's space for
a maximal-sized ether frame, then do epinit() then epstop(),
instead of just the Tx and Rx reset. Required on at least a 3c595.
Tested on a 3c595, but not on 3c509-generation hardware.
65 lines
2.7 KiB
C
65 lines
2.7 KiB
C
/* $NetBSD: elink3var.h,v 1.7 1996/11/17 23:58:31 jonathan Exp $ */
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/*
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* Copyright (c) 1994 Herb Peyerl <hpeyerl@beer.org>
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* All rights reserved.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Herb Peyerl.
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* 4. The name of Herb Peyerl may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Ethernet software status per interface.
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*/
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struct ep_softc {
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struct device sc_dev;
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void *sc_ih;
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struct arpcom sc_arpcom; /* Ethernet common part */
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bus_space_tag_t sc_iot; /* bus cookie */
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bus_space_handle_t sc_ioh; /* bus i/o handle */
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char ep_connectors; /* Connectors on this card. */
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#define MAX_MBS 8 /* # of mbufs we keep around */
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struct mbuf *mb[MAX_MBS]; /* spare mbuf storage. */
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int next_mb; /* Which mbuf to use next. */
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int last_mb; /* Last mbuf. */
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int tx_start_thresh; /* Current TX_start_thresh. */
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int tx_succ_ok; /* # packets sent in sequence */
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/* w/o underrun */
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u_char bustype;
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#define EP_BUS_ISA 0x0
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#define EP_BUS_PCMCIA 0x1
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#define EP_BUS_EISA 0x2
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#define EP_BUS_PCI 0x3
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#define EP_IS_BUS_32(a) ((a) & 0x2)
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int ep_pktlenshift; /* scale factor for pkt lengths */
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};
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u_int16_t epreadeeprom __P((bus_space_tag_t, bus_space_handle_t, int));
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void epconfig __P((struct ep_softc *, u_int16_t));
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int epintr __P((void *));
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void epstop __P((struct ep_softc *));
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