NetBSD/sys/arch/newsmips/stand/boot/devopen.c

/*	$NetBSD: devopen.c,v 1.10 2008/02/21 14:30:41 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 <netinet/in.h>
#include <lib/libsa/nfs.h>

#include <machine/apcall.h>
#include <machine/romcall.h>
#include <promdev.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 *);
#ifdef HAVE_CHANGEDISK_HOOK
void changedisk_hook(struct open_file *);
#endif

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

struct fs_ops file_system_ufs = FS_OPS(ufs);
struct fs_ops file_system_nfs = FS_OPS(nfs);
#ifdef SUPPORT_USTARFS
struct fs_ops file_system_ustarfs = FS_OPS(ustarfs);
struct fs_ops file_system[2];
#else
struct fs_ops file_system[1];
#endif
int nfsys;

struct romdev romdev;

extern int apbus;

int
devopen(struct open_file *f, const char *fname, char **file)
{
	int fd;
	char *cp;
	int error = 0;

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

	strcpy(romdev.devname, fname);
	cp = strchr(romdev.devname, ')') + 1;
	*cp = 0;
	if (apbus)
		fd = apcall_open(romdev.devname, 2);
	else
		fd = rom_open(romdev.devname, 2);

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

	romdev.fd = fd;
	if (strncmp(romdev.devname, "sonic", 5) == 0)
		romdev.devtype = DT_NET;
	else
		romdev.devtype = DT_BLOCK;

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

	if (romdev.devtype == DT_BLOCK) {
		file_system[0] = file_system_ufs;
#ifdef SUPPORT_USTARFS
		file_system[1] = file_system_ustarfs;
		nfsys = 2;
#else
		nfsys = 1;
#endif
	} else {	/* DT_NET */
		file_system[0] = file_system_nfs;
		nfsys = 1;

		if ((error = net_open(&romdev)) != 0) {
			printf("Can't open NFS network connection on `%s'\n",
			    romdev.devname);
			return error;
		}
	}

	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");
	if (apbus)
		apcall_close(dev->fd);
	else
		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 */

	if (apbus) {
		apcall_lseek(dev->fd, blk * 512, 0);
		apcall_read(dev->fd, buf, size);
	} else {
		rom_lseek(dev->fd, blk * 512, 0);
		rom_read(dev->fd, buf, size);
	}
	*rsize = size;		/* XXX */
	return 0;
}

#ifdef HAVE_CHANGEDISK_HOOK
void
changedisk_hook(struct open_file *f)
{
	struct romdev *dev = f->f_devdata;

	if (apbus) {
		apcall_ioctl(dev->fd, APIOCEJECT, NULL);
		apcall_close(dev->fd);
		getchar();
		dev->fd = apcall_open(dev->devname, 2);
	} else {
		rom_ioctl(dev->fd, SYSIOCEJECT, NULL);
		rom_close(dev->fd);
		getchar();
		dev->fd = rom_open(dev->devname, 2);
	}
}
#endif