sys/arch/news68k/stand/boot/devopen.c

   1 /*      $NetBSD: devopen.c,v 1.8 2005/12/11 12:18:24 christos 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 }