517 lines
13 KiB
C
517 lines
13 KiB
C
/* $NetBSD: if_le_isa.c,v 1.7 1996/12/05 02:39:37 thorpej Exp $ */
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/*-
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* Copyright (c) 1995 Charles M. Hannum. All rights reserved.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell and Rick Macklem.
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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 the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)if_le.c 8.2 (Berkeley) 11/16/93
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*/
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#include "bpfilter.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/syslog.h>
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#include <sys/socket.h>
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#include <sys/device.h>
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#include <net/if.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#endif
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#include <vm/vm.h>
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#include <machine/cpu.h>
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#include <machine/intr.h>
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#include <machine/bus.h>
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isadmavar.h>
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#include <dev/ic/am7990reg.h>
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#include <dev/ic/am7990var.h>
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#include <dev/isa/if_levar.h>
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static char *card_type[] =
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{ "unknown", "BICC Isolan", "NE2100", "DEPCA", "PCnet-ISA" };
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int le_isa_probe __P((struct device *, void *, void *));
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void le_isa_attach __P((struct device *, struct device *, void *));
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struct cfattach le_isa_ca = {
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sizeof(struct le_softc), le_isa_probe, le_isa_attach
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};
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int depca_isa_probe __P((struct le_softc *, struct isa_attach_args *));
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int ne2100_isa_probe __P((struct le_softc *, struct isa_attach_args *));
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int bicc_isa_probe __P((struct le_softc *, struct isa_attach_args *));
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int lance_isa_probe __P((struct am7990_softc *));
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int le_isa_intredge __P((void *));
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hide void le_isa_wrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t));
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hide u_int16_t le_isa_rdcsr __P((struct am7990_softc *, u_int16_t));
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void depca_copytobuf __P((struct am7990_softc *, void *, int, int));
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void depca_copyfrombuf __P((struct am7990_softc *, void *, int, int));
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void depca_zerobuf __P((struct am7990_softc *, int, int));
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hide void
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le_isa_wrcsr(sc, port, val)
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struct am7990_softc *sc;
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u_int16_t port, val;
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{
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struct le_softc *lesc = (struct le_softc *)sc;
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bus_space_tag_t iot = lesc->sc_iot;
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bus_space_handle_t ioh = lesc->sc_ioh;
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bus_space_write_2(iot, ioh, lesc->sc_rap, port);
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bus_space_write_2(iot, ioh, lesc->sc_rdp, val);
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}
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hide u_int16_t
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le_isa_rdcsr(sc, port)
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struct am7990_softc *sc;
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u_int16_t port;
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{
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struct le_softc *lesc = (struct le_softc *)sc;
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bus_space_tag_t iot = lesc->sc_iot;
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bus_space_handle_t ioh = lesc->sc_ioh;
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u_int16_t val;
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bus_space_write_2(iot, ioh, lesc->sc_rap, port);
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val = bus_space_read_2(iot, ioh, lesc->sc_rdp);
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return (val);
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}
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int
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le_isa_probe(parent, match, aux)
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struct device *parent;
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void *match, *aux;
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{
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struct le_softc *lesc = match;
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struct isa_attach_args *ia = aux;
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if (bicc_isa_probe(lesc, ia))
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return (1);
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if (ne2100_isa_probe(lesc, ia))
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return (1);
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if (depca_isa_probe(lesc, ia))
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return (1);
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return (0);
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}
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int
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depca_isa_probe(lesc, ia)
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struct le_softc *lesc;
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struct isa_attach_args *ia;
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{
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struct am7990_softc *sc = &lesc->sc_am7990;
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int iobase = ia->ia_iobase, port;
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bus_space_tag_t iot = ia->ia_iot;
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bus_space_handle_t ioh;
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bus_space_handle_t memh;
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#if 0
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u_int32_t sum, rom_sum;
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u_int8_t x;
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#endif
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int i;
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/* Map i/o space. */
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if (bus_space_map(iot, iobase, 16, 0, &ioh))
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return 0;
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if (ia->ia_maddr == MADDRUNK || ia->ia_msize == -1)
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goto bad;
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/* Map card RAM. */
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if (bus_space_map(ia->ia_memt, ia->ia_maddr, ia->ia_msize,
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0, &memh))
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goto bad;
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/* Just needed to check mapability; don't need it anymore. */
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bus_space_unmap(ia->ia_memt, ia->ia_maddr, ia->ia_msize);
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lesc->sc_iot = iot;
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lesc->sc_ioh = ioh;
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lesc->sc_rap = DEPCA_RAP;
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lesc->sc_rdp = DEPCA_RDP;
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lesc->sc_card = DEPCA;
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if (lance_isa_probe(sc) == 0)
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goto bad;
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bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM);
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/*
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* Extract the physical MAC address from the ROM.
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*
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* The address PROM is 32 bytes wide, and we access it through
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* a single I/O port. On each read, it rotates to the next
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* position. We find the ethernet address by looking for a
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* particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff,
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* 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the
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* ethernet address and a checksum).
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*
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* It appears that the PROM can be at one of two locations, so
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* we just try both.
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*/
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port = DEPCA_ADP;
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for (i = 0; i < 32; i++)
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if (bus_space_read_1(iot, ioh, port) == 0xff &&
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bus_space_read_1(iot, ioh, port) == 0x00 &&
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bus_space_read_1(iot, ioh, port) == 0x55 &&
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bus_space_read_1(iot, ioh, port) == 0xaa &&
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bus_space_read_1(iot, ioh, port) == 0xff &&
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bus_space_read_1(iot, ioh, port) == 0x00 &&
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bus_space_read_1(iot, ioh, port) == 0x55 &&
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bus_space_read_1(iot, ioh, port) == 0xaa)
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goto found;
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port = DEPCA_ADP + 1;
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for (i = 0; i < 32; i++)
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if (bus_space_read_1(iot, ioh, port) == 0xff &&
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bus_space_read_1(iot, ioh, port) == 0x00 &&
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bus_space_read_1(iot, ioh, port) == 0x55 &&
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bus_space_read_1(iot, ioh, port) == 0xaa &&
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bus_space_read_1(iot, ioh, port) == 0xff &&
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bus_space_read_1(iot, ioh, port) == 0x00 &&
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bus_space_read_1(iot, ioh, port) == 0x55 &&
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bus_space_read_1(iot, ioh, port) == 0xaa)
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goto found;
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printf("%s: address not found\n", sc->sc_dev.dv_xname);
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goto bad;
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found:
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for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++)
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sc->sc_arpcom.ac_enaddr[i] = bus_space_read_1(iot, ioh, port);
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#if 0
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sum =
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(sc->sc_arpcom.ac_enaddr[0] << 2) +
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(sc->sc_arpcom.ac_enaddr[1] << 10) +
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(sc->sc_arpcom.ac_enaddr[2] << 1) +
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(sc->sc_arpcom.ac_enaddr[3] << 9) +
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(sc->sc_arpcom.ac_enaddr[4] << 0) +
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(sc->sc_arpcom.ac_enaddr[5] << 8);
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sum = (sum & 0xffff) + (sum >> 16);
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sum = (sum & 0xffff) + (sum >> 16);
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rom_sum = bus_space_read_1(iot, ioh, port);
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rom_sum |= bus_space_read_1(iot, ioh, port) << 8;
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if (sum != rom_sum) {
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printf("%s: checksum mismatch; calculated %04x != read %04x",
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sc->sc_dev.dv_xname, sum, rom_sum);
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goto bad;
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}
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#endif
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bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_NORMAL);
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/*
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* XXX INDIRECT BROKENNESS!
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* XXX Should always unmap, and re-map in if_le_isa_attach().
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*/
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ia->ia_iosize = 16;
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ia->ia_drq = DRQUNK;
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return 1;
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bad:
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bus_space_unmap(iot, ioh, 16);
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return 0;
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}
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int
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ne2100_isa_probe(lesc, ia)
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struct le_softc *lesc;
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struct isa_attach_args *ia;
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{
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struct am7990_softc *sc = &lesc->sc_am7990;
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int iobase = ia->ia_iobase;
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bus_space_tag_t iot = ia->ia_iot;
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bus_space_handle_t ioh;
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int i;
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/* Map i/o space. */
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if (bus_space_map(iot, iobase, 24, 0, &ioh))
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return 0;
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lesc->sc_iot = iot;
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lesc->sc_ioh = ioh;
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lesc->sc_rap = NE2100_RAP;
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lesc->sc_rdp = NE2100_RDP;
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lesc->sc_card = NE2100;
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if (lance_isa_probe(sc) == 0) {
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bus_space_unmap(iot, ioh, 24);
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return 0;
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}
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/*
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* Extract the physical MAC address from the ROM.
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*/
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for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++)
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sc->sc_arpcom.ac_enaddr[i] = bus_space_read_1(iot, ioh, i);
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/*
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* XXX INDIRECT BROKENNESS!
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* XXX Should always unmap, and re-map in if_le_isa_attach().
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*/
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ia->ia_iosize = 24;
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return 1;
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}
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int
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bicc_isa_probe(lesc, ia)
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struct le_softc *lesc;
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struct isa_attach_args *ia;
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{
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struct am7990_softc *sc = &lesc->sc_am7990;
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int iobase = ia->ia_iobase;
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bus_space_tag_t iot = ia->ia_iot;
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bus_space_handle_t ioh;
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int i;
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/* Map i/o space. */
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if (bus_space_map(iot, iobase, 16, 0, &ioh))
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return 0;
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lesc->sc_iot = iot;
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lesc->sc_ioh = ioh;
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lesc->sc_rap = BICC_RAP;
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lesc->sc_rdp = BICC_RDP;
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lesc->sc_card = BICC;
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if (lance_isa_probe(sc) == 0) {
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bus_space_unmap(iot, ioh, 16);
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return 0;
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}
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/*
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* Extract the physical MAC address from the ROM.
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*/
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for (i = 0; i < sizeof(sc->sc_arpcom.ac_enaddr); i++)
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sc->sc_arpcom.ac_enaddr[i] = bus_space_read_1(iot, ioh, i * 2);
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/*
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* XXX INDIRECT BROKENNESS!
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* XXX Should always unmap, and re-map in if_le_isa_attach().
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*/
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ia->ia_iosize = 16;
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return 1;
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}
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/*
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* Determine which chip is present on the card.
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*/
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int
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lance_isa_probe(sc)
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struct am7990_softc *sc;
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{
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/* Stop the LANCE chip and put it in a known state. */
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le_isa_wrcsr(sc, LE_CSR0, LE_C0_STOP);
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delay(100);
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if (le_isa_rdcsr(sc, LE_CSR0) != LE_C0_STOP)
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return 0;
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le_isa_wrcsr(sc, LE_CSR3, sc->sc_conf3);
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return 1;
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}
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void
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le_isa_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct le_softc *lesc = (void *)self;
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struct am7990_softc *sc = &lesc->sc_am7990;
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struct isa_attach_args *ia = aux;
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bus_space_tag_t iot = ia->ia_iot;
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bus_space_tag_t memt = ia->ia_memt;
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bus_space_handle_t memh;
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printf(": %s Ethernet\n", card_type[lesc->sc_card]);
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lesc->sc_iot = iot;
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lesc->sc_memt = memt;
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/* XXX SHOULD RE-MAP I/O SPACE HERE. */
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if (lesc->sc_card == DEPCA) {
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u_char val;
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int i;
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/* Map shared memory. */
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if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize,
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0, &memh))
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panic("le_isa_attach: can't map shared memory");
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lesc->sc_memh = memh;
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val = 0xff;
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for (;;) {
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#if 0 /* XXX !! */
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bus_space_set_region_1(memt, memh, 0, val);
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#else
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for (i = 0; i < ia->ia_msize; i++)
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bus_space_write_1(memt, memh, i, val);
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#endif
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for (i = 0; i < ia->ia_msize; i++)
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if (bus_space_read_1(memt, memh, 1) != val) {
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printf("%s: failed to clear memory\n",
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sc->sc_dev.dv_xname);
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return;
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}
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if (val == 0x00)
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break;
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val -= 0x55;
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}
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sc->sc_conf3 = LE_C3_ACON;
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sc->sc_mem = 0; /* Not used. */
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sc->sc_addr = 0;
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sc->sc_memsize = ia->ia_msize;
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} else {
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sc->sc_mem = malloc(16384, M_DEVBUF, M_NOWAIT);
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if (sc->sc_mem == 0) {
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printf("%s: couldn't allocate memory for card\n",
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sc->sc_dev.dv_xname);
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return;
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}
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sc->sc_conf3 = 0;
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sc->sc_addr = kvtop(sc->sc_mem); /* XXX !! */
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sc->sc_memsize = 16384;
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}
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if (lesc->sc_card == DEPCA) {
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sc->sc_copytodesc = depca_copytobuf;
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sc->sc_copyfromdesc = depca_copyfrombuf;
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sc->sc_copytobuf = depca_copytobuf;
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sc->sc_copyfrombuf = depca_copyfrombuf;
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sc->sc_zerobuf = depca_zerobuf;
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} else {
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sc->sc_copytodesc = am7990_copytobuf_contig;
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sc->sc_copyfromdesc = am7990_copyfrombuf_contig;
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sc->sc_copytobuf = am7990_copytobuf_contig;
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sc->sc_copyfrombuf = am7990_copyfrombuf_contig;
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sc->sc_zerobuf = am7990_zerobuf_contig;
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}
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sc->sc_rdcsr = le_isa_rdcsr;
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sc->sc_wrcsr = le_isa_wrcsr;
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sc->sc_hwinit = NULL;
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printf("%s", sc->sc_dev.dv_xname);
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am7990_config(sc);
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if (ia->ia_drq != DRQUNK)
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isa_dmacascade(ia->ia_drq);
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lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
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IPL_NET, le_isa_intredge, sc);
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}
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/*
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* Controller interrupt.
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*/
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int
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le_isa_intredge(arg)
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void *arg;
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{
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if (am7990_intr(arg) == 0)
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return (0);
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for (;;)
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if (am7990_intr(arg) == 0)
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return (1);
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}
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/*
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* DEPCA shared memory access functions.
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*/
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void
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depca_copytobuf(sc, from, boff, len)
|
|
struct am7990_softc *sc;
|
|
void *from;
|
|
int boff, len;
|
|
{
|
|
struct le_softc *lesc = (struct le_softc *)sc;
|
|
|
|
bus_space_write_region_1(lesc->sc_memt, lesc->sc_memh, boff,
|
|
from, len);
|
|
}
|
|
|
|
void
|
|
depca_copyfrombuf(sc, to, boff, len)
|
|
struct am7990_softc *sc;
|
|
void *to;
|
|
int boff, len;
|
|
{
|
|
struct le_softc *lesc = (struct le_softc *)sc;
|
|
|
|
bus_space_read_region_1(lesc->sc_memt, lesc->sc_memh, boff,
|
|
to, len);
|
|
}
|
|
|
|
void
|
|
depca_zerobuf(sc, boff, len)
|
|
struct am7990_softc *sc;
|
|
int boff, len;
|
|
{
|
|
struct le_softc *lesc = (struct le_softc *)sc;
|
|
|
|
#if 0 /* XXX !! */
|
|
bus_space_set_region_1(lesc->sc_memt, lesc->sc_memh, boff,
|
|
0x00, len);
|
|
#else
|
|
for (; len != 0; boff++, len--)
|
|
bus_space_write_1(lesc->sc_memt, lesc->sc_memh, boff, 0x00);
|
|
#endif
|
|
}
|