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