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      1 /*	$NetBSD: devopen.c,v 1.9 2007/12/23 03:04:57 tsutsui Exp $	*/
      2 
      3 /*-
      4  * Copyright (C) 1999 Tsubai Masanari.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. The name of the author may not be used to endorse or promote products
     15  *    derived from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <lib/libkern/libkern.h>
     30 #include <lib/libsa/stand.h>
     31 #include <lib/libsa/ufs.h>
     32 #include <lib/libsa/ustarfs.h>
     33 
     34 #include <machine/romcall.h>
     35 
     36 #ifdef BOOT_DEBUG
     37 # define DPRINTF printf
     38 #else
     39 # define DPRINTF while (0) printf
     40 #endif
     41 
     42 int dkopen(struct open_file *, ...);
     43 int dkclose(struct open_file *);
     44 int dkstrategy(void *, int, daddr_t, size_t, void *, size_t *);
     45 
     46 struct devsw devsw[] = {
     47 	{ "dk", dkstrategy, dkopen, dkclose, noioctl }
     48 };
     49 int ndevs = __arraycount(devsw);
     50 
     51 struct fs_ops file_system[] = {
     52 	FS_OPS(ufs),
     53 	FS_OPS(ustarfs),
     54 };
     55 int nfsys = __arraycount(file_system);
     56 
     57 struct romdev {
     58 	int fd;
     59 } romdev;
     60 
     61 int
     62 devopen(struct open_file *f, const char *fname, char **file)
     63 {
     64 	int fd;
     65 	char devname[32];
     66 	char *cp;
     67 
     68 	DPRINTF("devopen: %s\n", fname);
     69 
     70 	strcpy(devname, fname);
     71 	cp = strchr(devname, ')') + 1;
     72 	*cp = 0;
     73 	fd = rom_open(devname, 0);
     74 
     75 	DPRINTF("devname = %s, fd = %d\n", devname, fd);
     76 	if (fd == -1)
     77 		return -1;
     78 
     79 	romdev.fd = fd;
     80 
     81 	f->f_dev = devsw;
     82 	f->f_devdata = &romdev;
     83 	*file = strchr(fname, ')') + 1;
     84 
     85 	return 0;
     86 }
     87 
     88 int
     89 dkopen(struct open_file *f, ...)
     90 {
     91 
     92 	DPRINTF("dkopen\n");
     93 	return 0;
     94 }
     95 
     96 int
     97 dkclose(struct open_file *f)
     98 {
     99 	struct romdev *dev = f->f_devdata;
    100 
    101 	DPRINTF("dkclose\n");
    102 	rom_close(dev->fd);
    103 	return 0;
    104 }
    105 
    106 int
    107 dkstrategy(void *devdata, int rw, daddr_t blk, size_t size, void *buf,
    108     size_t *rsize)
    109 {
    110 	struct romdev *dev = devdata;
    111 
    112 	/* XXX should use partition offset */
    113 
    114 	rom_lseek(dev->fd, blk * 512, 0);
    115 	rom_read(dev->fd, buf, size);
    116 	*rsize = size;
    117 	return 0;
    118 }
    119