138 lines
4.1 KiB
C
138 lines
4.1 KiB
C
/* $NetBSD: idprom.c,v 1.8 1994/11/21 21:30:49 gwr Exp $ */
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/*
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* Copyright (c) 1993 Adam Glass
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Adam Glass.
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* 4. The name of the authors may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Machine ID PROM - system type and serial number
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*/
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#include "sys/param.h"
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#include "sys/systm.h"
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#include "sys/device.h"
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#include "machine/autoconf.h"
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#include "machine/control.h"
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#include "machine/idprom.h"
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#include "machine/obctl.h"
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#include "idprom.h"
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extern void idpromattach __P((struct device *, struct device *, void *));
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struct idprom_softc {
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struct device idprom_driver;
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int idprom_init;
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struct idprom idprom_copy;
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char *idprom_addr;
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int idprom_size;
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};
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struct cfdriver idpromcd =
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{ NULL, "idprom", always_match, idpromattach, DV_DULL,
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sizeof(struct idprom_softc), 0};
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#define IDPROM_CHECK(unit) \
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if (unit >= idpromcd.cd_ndevs || (idpromcd.cd_devs[unit] == NULL)) \
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return ENXIO
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#define UNIT_TO_IDP(unit) idpromcd.cd_devs[unit]
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void idpromattach(parent, self, args)
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struct device *parent;
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struct device *self;
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void *args;
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{
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struct idprom_softc *idp = (struct idprom_softc *) self;
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struct obctl_cf_loc *obctl_loc = OBCTL_LOC(self);
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idp->idprom_init = 0;
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idp->idprom_addr =
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OBCTL_DEFAULT_PARAM(char *, obctl_loc->obctl_addr, IDPROM_BASE);
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idp->idprom_size =
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OBCTL_DEFAULT_PARAM(int, obctl_loc->obctl_size, IDPROM_SIZE);
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obctl_print(idp->idprom_addr, idp->idprom_size);
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printf("\n");
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}
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int idpromopen(dev, oflags, devtype, p)
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dev_t dev;
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int oflags;
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int devtype;
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struct proc *p;
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{
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struct idprom_softc *idp;
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int unit, idprom_ok;
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unit = minor(dev);
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IDPROM_CHECK(unit);
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idp = UNIT_TO_IDP(unit);
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if (!idp->idprom_init)
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idprom_ok = idprom_fetch(&idp->idprom_copy, IDPROM_VERSION);
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if (!idprom_ok) return EIO;
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idp->idprom_init = 1;
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return 0;
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}
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int idpromclose(dev, fflag, devtype, p)
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dev_t dev;
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int fflag;
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int devtype;
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struct proc *p;
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{
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int unit;
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unit = minor(dev);
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IDPROM_CHECK(unit);
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return 0;
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}
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idpromread(dev, uio, ioflag)
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dev_t dev;
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struct uio *uio;
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int ioflag;
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{
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int error, unit, length;
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struct idprom_softc *idp;
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unit = minor(dev);
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IDPROM_CHECK(unit);
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idp = UNIT_TO_IDP(unit);
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if (!idp->idprom_init) return EIO;
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error = 0;
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while (uio->uio_resid > 0) {
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if (uio->uio_offset >= idp->idprom_size) break; /* past or at end */
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length = min(uio->uio_resid, (idp->idprom_size - uio->uio_offset));
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error = uiomove((caddr_t) &idp->idprom_copy, length, uio);
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}
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return error;
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}
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