1 /* $NetBSD: devopen.c,v 1.1 1999/12/09 14:53:22 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 33 #include <machine/romcall.h> 34 35 #ifdef BOOT_DEBUG 36 # define DPRINTF printf 37 #else 38 # define DPRINTF while (0) printf 39 #endif 40 41 int dkopen __P((struct open_file *, ...)); 42 int dkclose __P((struct open_file *)); 43 int dkstrategy __P((void *, int, daddr_t, size_t, void *, size_t *)); 44 45 struct devsw devsw[] = { 46 { "dk", dkstrategy, dkopen, dkclose, noioctl } 47 }; 48 int ndevs = sizeof(devsw) / sizeof(devsw[0]); 49 50 struct fs_ops file_system[] = { 51 { ufs_open, ufs_close, ufs_read, ufs_write, ufs_seek, ufs_stat } 52 }; 53 int nfsys = sizeof(file_system) / sizeof(file_system[0]); 54 55 struct romdev { 56 int fd; 57 } romdev; 58 59 int 60 devopen(f, fname, file) 61 struct open_file *f; 62 const char *fname; 63 char **file; /* out */ 64 { 65 int fd; 66 char devname[32]; 67 char *cp; 68 69 DPRINTF("devopen: %s\n", fname); 70 71 strcpy(devname, fname); 72 cp = strchr(devname, ')') + 1; 73 *cp = 0; 74 fd = rom_open(devname, 0); 75 76 DPRINTF("devname = %s, fd = %d\n", devname, fd); 77 if (fd == -1) 78 return -1; 79 80 romdev.fd = fd; 81 82 f->f_dev = devsw; 83 f->f_devdata = &romdev; 84 *file = strchr(fname, ')') + 1; 85 86 return 0; 87 } 88 89 int 90 dkopen(struct open_file *f, ...) 91 { 92 DPRINTF("dkopen\n"); 93 return 0; 94 } 95 96 int 97 dkclose(f) 98 struct open_file *f; 99 { 100 struct romdev *dev = f->f_devdata; 101 102 DPRINTF("dkclose\n"); 103 rom_close(dev->fd); 104 return 0; 105 } 106 107 int 108 dkstrategy(devdata, rw, blk, size, buf, rsize) 109 void *devdata; 110 int rw; 111 daddr_t blk; 112 size_t size; 113 void *buf; 114 size_t *rsize; /* out: number of bytes transfered */ 115 { 116 struct romdev *dev = devdata; 117 118 /* XXX should use partition offset */ 119 120 rom_lseek(dev->fd, blk * 512, 0); 121 rom_read(dev->fd, buf, size); 122 *rsize = size; 123 return 0; 124 } 125