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/* $OpenBSD: fl.c,v 1.2 2001/01/25 03:50:49 todd Exp $ */
/*
* Copyright (c) 1997 Per Fogelstrom
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed under OpenBSD by
* Per Fogelstrom.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <stdarg.h>
#include <stand.h>
#include <sys/param.h>
int prom_seek __P((int, long, int));
int disk_read __P((int, char *, int, int));
int disk_open __P((char *, int));
struct fl_softc {
int sc_fd; /* PROM file id */
};
int
flstrategy(devdata, rw, bn, reqcnt, addr, cnt)
void *devdata;
int rw;
daddr_t bn;
u_int reqcnt;
char *addr;
u_int *cnt; /* out: number of bytes transferred */
{
struct fl_softc *sc = (struct fl_softc *)devdata;
int s;
long offset;
offset = bn * DEV_BSIZE;
s = disk_read(sc->sc_fd, addr, offset, reqcnt);
if (s < 0)
return (-s);
*cnt = s;
return (0);
}
/*
* We only deal with flash 0 here. We need to be small.
*/
int
flopen(struct open_file *f, ...)
{
struct fl_softc *sc;
int fd;
static char device[] = "fl(0)";
fd = disk_open(device, 0);
if (fd < 0) {
return (ENXIO);
}
sc = alloc(sizeof(struct fl_softc));
f->f_devdata = (void *)sc;
sc->sc_fd = fd;
return (0);
}
int
flclose(f)
struct open_file *f;
{
#ifdef FANCY
free(f->f_devdata, sizeof(struct fl_softc));
f->f_devdata = (void *)0;
#endif
return (0);
}
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