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NetBSD/sys/dev/ic/elink3var.h

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Fix for hanging 3com ``large packet'' (100Mbit) Etherlink-III devices: * 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.
1996-11-18 02:58:29 +03:00
/* $NetBSD: elink3var.h,v 1.7 1996/11/17 23:58:31 jonathan Exp $ */
Break up the ep driver into isa, eisa, and pci front-ends and a bus-independent core driver. Tested on all three bus types, including an isa 3c509 masquerading as an eisa device (use ep* at eisa? slot ? in your kernel config file to catch this one). XXX Driver still needs to be converted to <machine/bus.h>
1996-04-25 06:15:42 +04:00
/*
Update Herb's e-mail address; beer.org feels a lot more friendly.
1996-05-10 09:27:53 +04:00
* Copyright (c) 1994 Herb Peyerl <hpeyerl@beer.org>
Break up the ep driver into isa, eisa, and pci front-ends and a bus-independent core driver. Tested on all three bus types, including an isa 3c509 masquerading as an eisa device (use ep* at eisa? slot ? in your kernel config file to catch this one). XXX Driver still needs to be converted to <machine/bus.h>
1996-04-25 06:15:42 +04:00
* All rights reserved.
*
* 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 Herb Peyerl.
* 4. The name of Herb Peyerl may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/*
* Ethernet software status per interface.
*/
struct ep_softc {
struct device sc_dev;
void *sc_ih;
struct arpcom sc_arpcom; /* Ethernet common part */
New bus.h implementation/interface: - No more distinction between i/o-mapped and memory-mapped devices. It's all "bus space" now, and space tags differentiate the space with finer grain than the bus chipset tag. - Add memory barrier methods. - Implement space alloc/free methods. - Implement region read/write methods (like memcpy to/from bus space). This interface provides a better abstraction for dealing with machine-independent chipset drivers.
1996-10-22 02:24:37 +04:00
bus_space_tag_t sc_iot; /* bus cookie */
bus_space_handle_t sc_ioh; /* bus i/o handle */
Break up the ep driver into isa, eisa, and pci front-ends and a bus-independent core driver. Tested on all three bus types, including an isa 3c509 masquerading as an eisa device (use ep* at eisa? slot ? in your kernel config file to catch this one). XXX Driver still needs to be converted to <machine/bus.h>
1996-04-25 06:15:42 +04:00
char ep_connectors; /* Connectors on this card. */
#define MAX_MBS 8 /* # of mbufs we keep around */
struct mbuf *mb[MAX_MBS]; /* spare mbuf storage. */
int next_mb; /* Which mbuf to use next. */
int last_mb; /* Last mbuf. */
int tx_start_thresh; /* Current TX_start_thresh. */
int tx_succ_ok; /* # packets sent in sequence */
/* w/o underrun */
u_char bustype;
#define EP_BUS_ISA 0x0
#define EP_BUS_PCMCIA 0x1
#define EP_BUS_EISA 0x2
#define EP_BUS_PCI 0x3
#define EP_IS_BUS_32(a) ((a) & 0x2)
Fix for hanging 3com ``large packet'' (100Mbit) Etherlink-III devices: * 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.
1996-11-18 02:58:29 +03:00
int ep_pktlenshift; /* scale factor for pkt lengths */
Break up the ep driver into isa, eisa, and pci front-ends and a bus-independent core driver. Tested on all three bus types, including an isa 3c509 masquerading as an eisa device (use ep* at eisa? slot ? in your kernel config file to catch this one). XXX Driver still needs to be converted to <machine/bus.h>
1996-04-25 06:15:42 +04:00
};
New bus.h implementation/interface: - No more distinction between i/o-mapped and memory-mapped devices. It's all "bus space" now, and space tags differentiate the space with finer grain than the bus chipset tag. - Add memory barrier methods. - Implement space alloc/free methods. - Implement region read/write methods (like memcpy to/from bus space). This interface provides a better abstraction for dealing with machine-independent chipset drivers.
1996-10-22 02:24:37 +04:00
u_int16_t epreadeeprom __P((bus_space_tag_t, bus_space_handle_t, int));
Be more careful with types, and pull in <machine/intr.h>
1996-05-15 02:22:05 +04:00
void epconfig __P((struct ep_softc *, u_int16_t));
Break up the ep driver into isa, eisa, and pci front-ends and a bus-independent core driver. Tested on all three bus types, including an isa 3c509 masquerading as an eisa device (use ep* at eisa? slot ? in your kernel config file to catch this one). XXX Driver still needs to be converted to <machine/bus.h>
1996-04-25 06:15:42 +04:00
int epintr __P((void *));
Move epstop prototype to the header file.
1996-05-03 23:08:47 +04:00
void epstop __P((struct ep_softc *));