462 lines
13 KiB
C
462 lines
13 KiB
C
/* $NetBSD: if_depca_isa.c,v 1.1 1998/04/16 18:00:14 drochner Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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 NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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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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#include <net/if_ether.h>
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#include <net/if_media.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_inarp.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/ic/am7990reg.h>
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#include <dev/ic/am7990var.h>
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#define DEPCA_CSR 0x0
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#define DEPCA_CSR_SHE 0x80 /* Shared memory enabled */
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#define DEPCA_CSR_LOW32K 0x40 /* Map lower 32K chunk */
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#define DEPCA_CSR_DUM 0x08 /* rev E compatibility */
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#define DEPCA_CSR_IM 0x04 /* Interrupt masked */
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#define DEPCA_CSR_IEN 0x02 /* Interrupt enabled */
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#define DEPCA_RDP 0x4
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#define DEPCA_RAP 0x6
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#define DEPCA_ADP 0xc
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struct depca_softc {
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struct am7990_softc sc_am7990; /* glue to MI code */
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void *sc_ih;
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bus_space_tag_t sc_iot;
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bus_space_tag_t sc_memt;
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bus_space_handle_t sc_ioh;
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bus_space_handle_t sc_memh;
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};
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int depca_isa_probe __P((struct device *, struct cfdata *, void *));
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void depca_isa_attach __P((struct device *, struct device *, void *));
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int le_depca_probe __P((struct device *, struct cfdata *, void *));
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void le_depca_attach __P((struct device *, struct device *, void *));
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struct cfattach depca_isa_ca = {
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sizeof(struct device), depca_isa_probe, depca_isa_attach
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}, le_depca_ca = {
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sizeof(struct depca_softc), le_depca_probe, le_depca_attach
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};
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int depca_readprom __P((bus_space_tag_t, bus_space_handle_t, u_int8_t *));
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int depca_intredge __P((void *));
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hide void depca_wrcsr __P((struct am7990_softc *, u_int16_t, u_int16_t));
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hide u_int16_t depca_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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depca_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 depca_softc *lesc = (struct depca_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, DEPCA_RAP, port);
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bus_space_write_2(iot, ioh, DEPCA_RDP, val);
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}
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hide u_int16_t
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depca_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 depca_softc *lesc = (struct depca_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, DEPCA_RAP, port);
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val = bus_space_read_2(iot, ioh, DEPCA_RDP);
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return (val);
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}
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int
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depca_readprom(iot, ioh, laddr)
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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u_int8_t *laddr;
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{
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int port, i;
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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("depca: address not found\n");
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return (-1);
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found:
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if (laddr) {
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for (i = 0; i < 6; i++)
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laddr[i] = bus_space_read_1(iot, ioh, port);
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}
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#if 0
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sum =
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(laddr[0] << 2) +
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(laddr[1] << 10) +
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(laddr[2] << 1) +
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(laddr[3] << 9) +
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(laddr[4] << 0) +
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(laddr[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("depca: checksum mismatch; calculated %04x != read %04x",
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sum, rom_sum);
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return (-1);
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}
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#endif
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return (0);
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}
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int
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depca_isa_probe(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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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_handle_t ioh;
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bus_space_handle_t memh;
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int rv = 0;
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/* Disallow impossible i/o address. */
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if (ia->ia_iobase != 0x200 && ia->ia_iobase != 0x300)
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return (0);
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/* Map i/o space. */
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if (bus_space_map(iot, ia->ia_iobase, 16, 0, &ioh))
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return 0;
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if (ia->ia_maddr == MADDRUNK ||
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(ia->ia_msize != 32*1024 && ia->ia_msize != 64*1024))
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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, 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, memh, ia->ia_msize);
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/* Stop the LANCE chip and put it in a known state. */
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bus_space_write_2(iot, ioh, DEPCA_RAP, LE_CSR0);
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bus_space_write_2(iot, ioh, DEPCA_RDP, LE_C0_STOP);
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delay(100);
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bus_space_write_2(iot, ioh, DEPCA_RAP, LE_CSR0);
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if (bus_space_read_2(iot, ioh, DEPCA_RDP) != LE_C0_STOP)
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goto bad;
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bus_space_write_2(iot, ioh, DEPCA_RAP, LE_CSR3);
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bus_space_write_2(iot, ioh, DEPCA_RDP, LE_C3_ACON);
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bus_space_write_1(iot, ioh, DEPCA_CSR, DEPCA_CSR_DUM);
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if (depca_readprom(iot, ioh, 0))
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goto bad;
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ia->ia_iosize = 16;
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rv = 1;
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bad:
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bus_space_unmap(iot, ioh, 16);
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return (rv);
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}
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void
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depca_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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printf("\n");
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config_found(self, aux, 0);
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}
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int
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le_depca_probe(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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return (1);
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}
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void
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le_depca_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 depca_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 ioh, memh;
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u_char val;
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int i;
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printf("\n");
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if (bus_space_map(iot, ia->ia_iobase, 16, 0, &ioh))
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panic("%s: can't map io", self->dv_xname);
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/* Map shared memory. */
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if (bus_space_map(memt, ia->ia_maddr, ia->ia_msize, 0, &memh))
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panic("%s: can't map mem space", self->dv_xname);
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lesc->sc_iot = iot;
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lesc->sc_ioh = ioh;
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lesc->sc_memt = memt;
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lesc->sc_memh = memh;
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if (depca_readprom(iot, ioh, sc->sc_enaddr)) {
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printf("%s: can't read PROM\n", self->dv_xname);
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return;
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}
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bus_space_write_1(iot, ioh, DEPCA_CSR,
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DEPCA_CSR_DUM | DEPCA_CSR_IEN | DEPCA_CSR_SHE
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| (ia->ia_msize == 32*1024 ? DEPCA_CSR_LOW32K : 0));
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val = 0xff;
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for (;;) {
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bus_space_set_region_1(memt, memh, 0, val,
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ia->ia_msize);
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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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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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sc->sc_rdcsr = depca_rdcsr;
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sc->sc_wrcsr = depca_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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lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
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IPL_NET, depca_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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depca_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)
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struct am7990_softc *sc;
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void *from;
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int boff, len;
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{
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struct depca_softc *lesc = (struct depca_softc *)sc;
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bus_space_write_region_1(lesc->sc_memt, lesc->sc_memh, boff,
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from, len);
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}
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void
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depca_copyfrombuf(sc, to, boff, len)
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struct am7990_softc *sc;
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void *to;
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int boff, len;
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{
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struct depca_softc *lesc = (struct depca_softc *)sc;
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bus_space_read_region_1(lesc->sc_memt, lesc->sc_memh, boff,
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to, len);
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}
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void
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depca_zerobuf(sc, boff, len)
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struct am7990_softc *sc;
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int boff, len;
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{
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struct depca_softc *lesc = (struct depca_softc *)sc;
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#if 0 /* XXX !! */
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bus_space_set_region_1(lesc->sc_memt, lesc->sc_memh, boff,
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0x00, len);
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#else
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for (; len != 0; boff++, len--)
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bus_space_write_1(lesc->sc_memt, lesc->sc_memh, boff, 0x00);
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#endif
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}
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