662 lines
18 KiB
C
662 lines
18 KiB
C
/* $NetBSD: if_le_vme.c,v 1.20 2004/05/12 00:38:11 wiz Exp $ */
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/*-
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* Copyright (c) 1998 maximum entropy. All rights reserved.
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* Copyright (c) 1997 Leo Weppelman. 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. 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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/*-
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* Copyright (c) 1995 Charles M. Hannum. 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 <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_le_vme.c,v 1.20 2004/05/12 00:38:11 wiz Exp $");
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#include "opt_inet.h"
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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_media.h>
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#include <net/if_ether.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 <machine/cpu.h>
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#include <machine/bus.h>
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#include <machine/iomap.h>
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#include <machine/scu.h>
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#include <atari/atari/device.h>
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#include <atari/atari/intr.h>
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#include <dev/ic/lancereg.h>
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#include <dev/ic/lancevar.h>
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#include <dev/ic/am7990reg.h>
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#include <dev/ic/am7990var.h>
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#include <atari/vme/vmevar.h>
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#include <atari/vme/if_levar.h>
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/*
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* All cards except BVME410 have 64KB RAM. However.... On the Riebl cards the
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* area between the offsets 0xee70-0xeec0 is used to store config data.
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*/
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struct le_addresses {
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u_long reg_addr;
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u_long mem_addr;
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int irq;
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int reg_size;
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int mem_size;
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int type_hint;
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} lestd[] = {
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{ 0xfe00fff0, 0xfe010000, IRQUNK, 16, 64*1024,
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LE_OLD_RIEBL|LE_NEW_RIEBL }, /* Riebl */
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{ 0xffcffff0, 0xffcf0000, 5, 16, 64*1024,
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LE_PAM }, /* PAM */
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{ 0xfecffff0, 0xfecf0000, 5, 16, 64*1024,
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LE_ROTHRON }, /* Rhotron */
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{ 0xfeff4100, 0xfe000000, 4, 8, VMECF_MEMSIZ_DEFAULT,
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LE_BVME410 } /* BVME410 */
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};
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#define NLESTD (sizeof(lestd) / sizeof(lestd[0]))
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/*
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* Default mac for RIEBL cards without a (working) battery. The first 4 bytes
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* are the manufacturer id.
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*/
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static u_char riebl_def_mac[] = {
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0x00, 0x00, 0x36, 0x04, 0x00, 0x00
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};
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static int le_intr __P((struct le_softc *, int));
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static void lepseudointr __P((struct le_softc *, void *));
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static int le_vme_match __P((struct device *, struct cfdata *, void *));
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static void le_vme_attach __P((struct device *, struct device *, void *));
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static int probe_addresses __P((bus_space_tag_t *, bus_space_tag_t *,
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bus_space_handle_t *, bus_space_handle_t *));
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static void riebl_skip_reserved_area __P((struct lance_softc *));
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static int nm93c06_read __P((bus_space_tag_t, bus_space_handle_t, int));
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static int bvme410_probe __P((bus_space_tag_t, bus_space_handle_t));
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static int bvme410_mem_size __P((bus_space_tag_t, u_long));
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static void bvme410_copytobuf __P((struct lance_softc *, void *, int, int));
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static void bvme410_zerobuf __P((struct lance_softc *, int, int));
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CFATTACH_DECL(le_vme, sizeof(struct le_softc),
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le_vme_match, le_vme_attach, NULL, NULL);
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#if defined(_KERNEL_OPT)
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#include "opt_ddb.h"
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#endif
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#ifdef DDB
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#define integrate
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#define hide
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#else
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#define integrate static __inline
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#define hide static
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#endif
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hide void lewrcsr __P((struct lance_softc *, u_int16_t, u_int16_t));
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hide u_int16_t lerdcsr __P((struct lance_softc *, u_int16_t));
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hide void
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lewrcsr(sc, port, val)
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struct lance_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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int s;
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s = splhigh();
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bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RAP, port);
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bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RDP, val);
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splx(s);
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}
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hide u_int16_t
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lerdcsr(sc, port)
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struct lance_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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u_int16_t val;
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int s;
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s = splhigh();
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bus_space_write_2(lesc->sc_iot, lesc->sc_ioh, LER_RAP, port);
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val = bus_space_read_2(lesc->sc_iot, lesc->sc_ioh, LER_RDP);
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splx(s);
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return (val);
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}
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static int
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le_vme_match(parent, cfp, aux)
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struct device *parent;
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struct cfdata *cfp;
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void *aux;
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{
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struct vme_attach_args *va = aux;
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int i;
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bus_space_tag_t iot;
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bus_space_tag_t memt;
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bus_space_handle_t ioh;
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bus_space_handle_t memh;
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iot = va->va_iot;
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memt = va->va_memt;
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for (i = 0; i < NLESTD; i++) {
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struct le_addresses *le_ap = &lestd[i];
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int found = 0;
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if ((va->va_iobase != IOBASEUNK)
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&& (va->va_iobase != le_ap->reg_addr))
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continue;
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if ((va->va_maddr != MADDRUNK)
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&& (va->va_maddr != le_ap->mem_addr))
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continue;
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if ((le_ap->irq != IRQUNK) && (va->va_irq != le_ap->irq))
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continue;
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if (bus_space_map(iot, le_ap->reg_addr, le_ap->reg_size, 0, &ioh)) {
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printf("leprobe: cannot map io-area\n");
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return (0);
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}
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if (le_ap->mem_size == VMECF_MEMSIZ_DEFAULT) {
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if (bvme410_probe(iot, ioh)) {
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bus_space_write_2(iot, ioh, BVME410_BAR, 0x1); /* XXX */
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le_ap->mem_size = bvme410_mem_size(memt, le_ap->mem_addr);
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}
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}
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if (le_ap->mem_size == VMECF_MEMSIZ_DEFAULT) {
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bus_space_unmap(iot, ioh, le_ap->reg_size);
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continue;
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}
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if (bus_space_map(memt, le_ap->mem_addr, le_ap->mem_size, 0, &memh)) {
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bus_space_unmap(iot, ioh, le_ap->reg_size);
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printf("leprobe: cannot map memory-area\n");
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return (0);
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}
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found = probe_addresses(&iot, &memt, &ioh, &memh);
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bus_space_unmap(iot, ioh, le_ap->reg_size);
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bus_space_unmap(memt, memh, le_ap->mem_size);
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if (found) {
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va->va_iobase = le_ap->reg_addr;
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va->va_iosize = le_ap->reg_size;
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va->va_maddr = le_ap->mem_addr;
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va->va_msize = le_ap->mem_size;
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va->va_aux = le_ap;
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if (va->va_irq == IRQUNK)
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va->va_irq = le_ap->irq;
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return 1;
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}
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}
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return (0);
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}
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static int
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probe_addresses(iot, memt, ioh, memh)
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bus_space_tag_t *iot;
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bus_space_tag_t *memt;
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bus_space_handle_t *ioh;
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bus_space_handle_t *memh;
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{
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/*
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* Test accesibility of register and memory area
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*/
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if(!bus_space_peek_2(*iot, *ioh, LER_RDP))
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return 0;
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if(!bus_space_peek_1(*memt, *memh, 0))
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return 0;
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/*
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* Test for writable memory
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*/
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bus_space_write_2(*memt, *memh, 0, 0xa5a5);
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if (bus_space_read_2(*memt, *memh, 0) != 0xa5a5)
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return 0;
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/*
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* Test writability of selector port.
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*/
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bus_space_write_2(*iot, *ioh, LER_RAP, LE_CSR1);
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if (bus_space_read_2(*iot, *ioh, LER_RAP) != LE_CSR1)
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return 0;
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/*
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* Do a small register test
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*/
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bus_space_write_2(*iot, *ioh, LER_RAP, LE_CSR0);
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bus_space_write_2(*iot, *ioh, LER_RDP, LE_C0_INIT | LE_C0_STOP);
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if (bus_space_read_2(*iot, *ioh, LER_RDP) != LE_C0_STOP)
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return 0;
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bus_space_write_2(*iot, *ioh, LER_RDP, LE_C0_STOP);
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if (bus_space_read_2(*iot, *ioh, LER_RDP) != LE_C0_STOP)
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return 0;
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return 1;
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}
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/*
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* Interrupt mess. Because the card's interrupt is hardwired to either
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* ipl5 or ipl3 (mostly on ipl5) and raising splnet to spl5() just won't do
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* (it kills the serial at the least), we use a 2-level interrupt scheme. The
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* card interrupt is routed to 'le_intr'. If the previous ipl was below
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* splnet, just call the mi-function. If not, save the interrupt status,
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* turn off card interrupts (the card is *very* persistent) and arrange
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* for a softint 'callback' through 'lepseudointr'.
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*/
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static int
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le_intr(lesc, sr)
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struct le_softc *lesc;
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int sr;
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{
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struct lance_softc *sc = &lesc->sc_am7990.lsc;
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u_int16_t csr0;
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if ((sr & PSL_IPL) < (IPL_NET & PSL_IPL))
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am7990_intr(sc);
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else {
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sc->sc_saved_csr0 = csr0 = lerdcsr(sc, LE_CSR0);
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lewrcsr(sc, LE_CSR0, csr0 & ~LE_C0_INEA);
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add_sicallback((si_farg)lepseudointr, lesc, sc);
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}
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return 1;
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}
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static void
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lepseudointr(lesc, sc)
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struct le_softc *lesc;
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void *sc;
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{
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int s;
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s = splx(lesc->sc_splval);
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am7990_intr(sc);
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splx(s);
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}
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static void
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le_vme_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 = (struct le_softc *)self;
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struct lance_softc *sc = &lesc->sc_am7990.lsc;
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struct vme_attach_args *va = aux;
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bus_space_handle_t ioh;
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bus_space_handle_t memh;
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struct le_addresses *le_ap;
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int i;
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printf("\n%s: ", sc->sc_dev.dv_xname);
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if (bus_space_map(va->va_iot, va->va_iobase, va->va_iosize, 0, &ioh))
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panic("leattach: cannot map io-area");
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if (bus_space_map(va->va_memt, va->va_maddr, va->va_msize, 0, &memh))
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panic("leattach: cannot map mem-area");
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lesc->sc_iot = va->va_iot;
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lesc->sc_ioh = ioh;
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lesc->sc_memt = va->va_memt;
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lesc->sc_memh = memh;
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lesc->sc_splval = (va->va_irq << 8) | PSL_S; /* XXX */
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le_ap = (struct le_addresses *)va->va_aux;
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/*
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* Go on to find board type
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*/
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if ((le_ap->type_hint & LE_PAM)
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&& bus_space_peek_1(va->va_iot, ioh, LER_EEPROM)) {
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printf("PAM card");
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lesc->sc_type = LE_PAM;
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bus_space_read_1(va->va_iot, ioh, LER_MEME);
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}
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else if((le_ap->type_hint & LE_BVME410)
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&& bvme410_probe(va->va_iot, ioh)) {
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printf("BVME410");
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lesc->sc_type = LE_BVME410;
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}
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else if (le_ap->type_hint & (LE_NEW_RIEBL|LE_OLD_RIEBL)) {
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printf("Riebl card");
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if(bus_space_read_4(va->va_memt, memh, RIEBL_MAGIC_ADDR)
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== RIEBL_MAGIC)
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lesc->sc_type = LE_NEW_RIEBL;
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else {
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printf("(without battery) ");
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lesc->sc_type = LE_OLD_RIEBL;
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}
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}
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else printf("le_vme_attach: Unsupported card!");
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switch (lesc->sc_type) {
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case LE_BVME410:
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sc->sc_copytodesc = bvme410_copytobuf;
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sc->sc_copyfromdesc = lance_copyfrombuf_contig;
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sc->sc_copytobuf = bvme410_copytobuf;
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sc->sc_copyfrombuf = lance_copyfrombuf_contig;
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sc->sc_zerobuf = bvme410_zerobuf;
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break;
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default:
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sc->sc_copytodesc = lance_copytobuf_contig;
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sc->sc_copyfromdesc = lance_copyfrombuf_contig;
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sc->sc_copytobuf = lance_copytobuf_contig;
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sc->sc_copyfrombuf = lance_copyfrombuf_contig;
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sc->sc_zerobuf = lance_zerobuf_contig;
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break;
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}
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sc->sc_rdcsr = lerdcsr;
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sc->sc_wrcsr = lewrcsr;
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sc->sc_hwinit = NULL;
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sc->sc_conf3 = LE_C3_BSWP;
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sc->sc_addr = 0;
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sc->sc_memsize = va->va_msize;
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sc->sc_mem = (void *)memh; /* XXX */
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/*
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* Get MAC address
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*/
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switch (lesc->sc_type) {
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case LE_OLD_RIEBL:
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bcopy(riebl_def_mac, sc->sc_enaddr,
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sizeof(sc->sc_enaddr));
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break;
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case LE_NEW_RIEBL:
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for (i = 0; i < sizeof(sc->sc_enaddr); i++)
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sc->sc_enaddr[i] =
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bus_space_read_1(va->va_memt, memh, i + RIEBL_MAC_ADDR);
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break;
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case LE_PAM:
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i = bus_space_read_1(va->va_iot, ioh, LER_EEPROM);
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for (i = 0; i < sizeof(sc->sc_enaddr); i++) {
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sc->sc_enaddr[i] =
|
|
(bus_space_read_2(va->va_memt, memh, 2 * i) << 4) |
|
|
(bus_space_read_2(va->va_memt, memh, 2 * i + 1) & 0xf);
|
|
}
|
|
i = bus_space_read_1(va->va_iot, ioh, LER_MEME);
|
|
break;
|
|
case LE_BVME410:
|
|
for (i = 0; i < (sizeof(sc->sc_enaddr) >> 1); i++) {
|
|
u_int16_t tmp;
|
|
|
|
tmp = nm93c06_read(va->va_iot, ioh, i);
|
|
sc->sc_enaddr[2 * i] = (tmp >> 8) & 0xff;
|
|
sc->sc_enaddr[2 * i + 1] = tmp & 0xff;
|
|
}
|
|
bus_space_write_2(va->va_iot, ioh, BVME410_BAR, 0x1); /* XXX */
|
|
}
|
|
|
|
am7990_config(&lesc->sc_am7990);
|
|
|
|
if ((lesc->sc_type == LE_OLD_RIEBL) || (lesc->sc_type == LE_NEW_RIEBL))
|
|
riebl_skip_reserved_area(sc);
|
|
|
|
/*
|
|
* XXX: We always use uservector 64....
|
|
*/
|
|
if ((lesc->sc_intr = intr_establish(64, USER_VEC, 0,
|
|
(hw_ifun_t)le_intr, lesc)) == NULL) {
|
|
printf("le_vme_attach: Can't establish interrupt\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Notify the card of the vector
|
|
*/
|
|
switch (lesc->sc_type) {
|
|
case LE_OLD_RIEBL:
|
|
case LE_NEW_RIEBL:
|
|
bus_space_write_2(va->va_memt, memh, RIEBL_IVEC_ADDR,
|
|
64 + 64);
|
|
break;
|
|
case LE_PAM:
|
|
bus_space_write_1(va->va_iot, ioh, LER_IVEC, 64 + 64);
|
|
break;
|
|
case LE_BVME410:
|
|
bus_space_write_2(va->va_iot, ioh, BVME410_IVEC, 64 + 64);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Unmask the VME-interrupt we're on
|
|
*/
|
|
if (machineid & ATARI_TT)
|
|
SCU->vme_mask |= 1 << va->va_irq;
|
|
}
|
|
|
|
/*
|
|
* True if 'addr' containe within [start,len]
|
|
*/
|
|
#define WITHIN(start, len, addr) \
|
|
((addr >= start) && ((addr) <= ((start) + (len))))
|
|
static void
|
|
riebl_skip_reserved_area(sc)
|
|
struct lance_softc *sc;
|
|
{
|
|
int offset = 0;
|
|
int i;
|
|
|
|
for(i = 0; i < sc->sc_nrbuf; i++) {
|
|
if (WITHIN(sc->sc_rbufaddr[i], LEBLEN, RIEBL_RES_START)
|
|
|| WITHIN(sc->sc_rbufaddr[i], LEBLEN, RIEBL_RES_END)) {
|
|
offset = RIEBL_RES_END - sc->sc_rbufaddr[i];
|
|
}
|
|
sc->sc_rbufaddr[i] += offset;
|
|
}
|
|
|
|
for(i = 0; i < sc->sc_ntbuf; i++) {
|
|
if (WITHIN(sc->sc_tbufaddr[i], LEBLEN, RIEBL_RES_START)
|
|
|| WITHIN(sc->sc_tbufaddr[i], LEBLEN, RIEBL_RES_END)) {
|
|
offset = RIEBL_RES_END - sc->sc_tbufaddr[i];
|
|
}
|
|
sc->sc_tbufaddr[i] += offset;
|
|
}
|
|
}
|
|
|
|
static int
|
|
nm93c06_read(iot, ioh, nm93c06reg)
|
|
bus_space_tag_t iot;
|
|
bus_space_handle_t ioh;
|
|
int nm93c06reg;
|
|
{
|
|
int bar;
|
|
int shift;
|
|
int bits = 0x180 | (nm93c06reg & 0xf);
|
|
int data = 0;
|
|
|
|
bar = 1<<BVME410_CS_SHIFT;
|
|
bus_space_write_2(iot, ioh, BVME410_BAR, bar);
|
|
delay(1); /* tCSS = 1 us */
|
|
for (shift = 9; shift >= 0; shift--) {
|
|
if (((bits >> shift) & 1) == 1)
|
|
bar |= 1<<BVME410_DIN_SHIFT;
|
|
else
|
|
bar &= ~(1<<BVME410_DIN_SHIFT);
|
|
bus_space_write_2(iot, ioh, BVME410_BAR, bar);
|
|
delay(1); /* tDIS = 0.4 us */
|
|
bar |= 1<<BVME410_CLK_SHIFT;
|
|
bus_space_write_2(iot, ioh, BVME410_BAR, bar);
|
|
delay(2); /* tSKH = 1 us, tSKH + tSKL >= 4 us */
|
|
bar &= ~(1<<BVME410_CLK_SHIFT);
|
|
bus_space_write_2(iot, ioh, BVME410_BAR, bar);
|
|
delay(2); /* tSKL = 1 us, tSKH + tSKL >= 4 us */
|
|
}
|
|
bar &= ~(1<<BVME410_DIN_SHIFT);
|
|
for (shift = 15; shift >= 0; shift--) {
|
|
delay(1); /* tDIS = 100 ns, BVM manual says 0.4 us */
|
|
bar |= 1<<BVME410_CLK_SHIFT;
|
|
bus_space_write_2(iot, ioh, BVME410_BAR, bar);
|
|
delay(2); /* tSKH = 1 us, tSKH + tSKL >= 4 us */
|
|
data |= (bus_space_read_2(iot, ioh, BVME410_BAR) & 1) << shift;
|
|
bar &= ~(1<<BVME410_CLK_SHIFT);
|
|
bus_space_write_2(iot, ioh, BVME410_BAR, bar);
|
|
delay(2); /* tSKL = 1 us, tSKH + tSKL >= 4 us */
|
|
}
|
|
bar &= ~(1<<BVME410_CS_SHIFT);
|
|
bus_space_write_2(iot, ioh, BVME410_BAR, bar);
|
|
delay(1); /* tCS = 1 us */
|
|
return data;
|
|
}
|
|
|
|
static int
|
|
bvme410_probe(iot, ioh)
|
|
bus_space_tag_t iot;
|
|
bus_space_handle_t ioh;
|
|
{
|
|
if (!bus_space_peek_2(iot, ioh, BVME410_IVEC))
|
|
return 0;
|
|
|
|
bus_space_write_2(iot, ioh, BVME410_IVEC, 0x0000);
|
|
if (bus_space_read_2(iot, ioh, BVME410_IVEC) != 0xff00)
|
|
return 0;
|
|
|
|
bus_space_write_2(iot, ioh, BVME410_IVEC, 0xffff);
|
|
if (bus_space_read_2(iot, ioh, BVME410_IVEC) != 0xffff)
|
|
return 0;
|
|
|
|
bus_space_write_2(iot, ioh, BVME410_IVEC, 0xa5a5);
|
|
if (bus_space_read_2(iot, ioh, BVME410_IVEC) != 0xffa5)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
bvme410_mem_size(memt, mem_addr)
|
|
bus_space_tag_t memt;
|
|
u_long mem_addr;
|
|
{
|
|
bus_space_handle_t memh;
|
|
int r;
|
|
|
|
if (bus_space_map(memt, mem_addr, 256*1024, 0, &memh))
|
|
return VMECF_MEMSIZ_DEFAULT;
|
|
if (!bus_space_peek_1(memt, memh, 0)) {
|
|
bus_space_unmap(memt, memh, 256*1024);
|
|
return VMECF_MEMSIZ_DEFAULT;
|
|
}
|
|
bus_space_write_1(memt, memh, 0, 128);
|
|
bus_space_write_1(memt, memh, 64*1024, 32);
|
|
bus_space_write_1(memt, memh, 32*1024, 8);
|
|
r = (int)(bus_space_read_1(memt, memh, 0) * 2048);
|
|
bus_space_unmap(memt, memh, 256*1024);
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* Need to be careful when writing to the bvme410 dual port memory.
|
|
* Continue writing each byte until it reads back the same.
|
|
*/
|
|
|
|
static void
|
|
bvme410_copytobuf(sc, from, boff, len)
|
|
struct lance_softc *sc;
|
|
void *from;
|
|
int boff, len;
|
|
{
|
|
volatile char *buf = (volatile char *) sc->sc_mem;
|
|
char *f = (char *) from;
|
|
|
|
for (buf += boff; len; buf++,f++,len--)
|
|
do {
|
|
*buf = *f;
|
|
} while (*buf != *f);
|
|
}
|
|
|
|
static void
|
|
bvme410_zerobuf(sc, boff, len)
|
|
struct lance_softc *sc;
|
|
int boff, len;
|
|
{
|
|
volatile char *buf = (volatile char *)sc->sc_mem;
|
|
|
|
for (buf += boff; len; buf++,len--)
|
|
do {
|
|
*buf = '\0';
|
|
} while (*buf != '\0');
|
|
}
|
|
|