/*      $NetBSD: devopen.c,v 1.9 2007/12/23 03:04:57 tsutsui Exp $      */

/*-
* Copyright (C) 1999 Tsubai Masanari.  All rights reserved.
*
* 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. 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 <lib/libkern/libkern.h>
#include <lib/libsa/stand.h>
#include <lib/libsa/ufs.h>
#include <lib/libsa/ustarfs.h>

#include <machine/romcall.h>

#ifdef BOOT_DEBUG
# define DPRINTF printf
#else
# define DPRINTF while (0) printf
#endif

int dkopen(struct open_file *, ...);
int dkclose(struct open_file *);
int dkstrategy(void *, int, daddr_t, size_t, void *, size_t *);

struct devsw devsw[] = {
       { "dk", dkstrategy, dkopen, dkclose, noioctl }
};
int ndevs = __arraycount(devsw);

struct fs_ops file_system[] = {
       FS_OPS(ufs),
       FS_OPS(ustarfs),
};
int nfsys = __arraycount(file_system);

struct romdev {
       int fd;
} romdev;

int
devopen(struct open_file *f, const char *fname, char **file)
{
       int fd;
       char devname[32];
       char *cp;

       DPRINTF("devopen: %s\n", fname);

       strcpy(devname, fname);
       cp = strchr(devname, ')') + 1;
       *cp = 0;
       fd = rom_open(devname, 0);

       DPRINTF("devname = %s, fd = %d\n", devname, fd);
       if (fd == -1)
               return -1;

       romdev.fd = fd;

       f->f_dev = devsw;
       f->f_devdata = &romdev;
       *file = strchr(fname, ')') + 1;

       return 0;
}

int
dkopen(struct open_file *f, ...)
{

       DPRINTF("dkopen\n");
       return 0;
}

int
dkclose(struct open_file *f)
{
       struct romdev *dev = f->f_devdata;

       DPRINTF("dkclose\n");
       rom_close(dev->fd);
       return 0;
}

int
dkstrategy(void *devdata, int rw, daddr_t blk, size_t size, void *buf,
   size_t *rsize)
{
       struct romdev *dev = devdata;

       /* XXX should use partition offset */

       rom_lseek(dev->fd, blk * 512, 0);
       rom_read(dev->fd, buf, size);
       *rsize = size;
       return 0;
}