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devopen.c revision 1.1.2.1 
      1 /*	$NetBSD: devopen.c,v 1.1.2.1 2000/11/20 20:17:33 bouyer 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 <netinet/in.h>
     33 #include <lib/libsa/nfs.h>
     34 
     35 #include <machine/apcall.h>
     36 #include <machine/romcall.h>
     37 #include <promdev.h>
     38 
     39 #ifdef BOOT_DEBUG
     40 # define DPRINTF printf
     41 #else
     42 # define DPRINTF while (0) printf
     43 #endif
     44 
     45 int dkopen __P((struct open_file *, ...));
     46 int dkclose __P((struct open_file *));
     47 int dkstrategy __P((void *, int, daddr_t, size_t, void *, size_t *));
     48 
     49 struct devsw devsw[] = {
     50 	{ "dk", dkstrategy, dkopen, dkclose, noioctl }
     51 };
     52 int ndevs = sizeof(devsw) / sizeof(devsw[0]);
     53 
     54 struct fs_ops file_system_ufs[] = {
     55 	{ ufs_open, ufs_close, ufs_read, ufs_write, ufs_seek, ufs_stat }
     56 };
     57 struct fs_ops file_system_nfs[] = {
     58 	{ nfs_open, nfs_close, nfs_read, nfs_write, nfs_seek, nfs_stat },
     59 };
     60 struct fs_ops file_system[1];
     61 int nfsys = sizeof(file_system) / sizeof(file_system[0]);
     62 
     63 struct romdev romdev;
     64 
     65 extern int apbus;
     66 
     67 int
     68 devopen(f, fname, file)
     69 	struct open_file *f;
     70 	const char *fname;
     71 	char **file;	/* out */
     72 {
     73 	int fd;
     74 	char devname[32];
     75 	char *cp;
     76 	int error = 0;
     77 
     78 	DPRINTF("devopen: %s\n", fname);
     79 
     80 	strcpy(devname, fname);
     81 	cp = strchr(devname, ')') + 1;
     82 	*cp = 0;
     83 	if (apbus)
     84 		fd = apcall_open(devname, 2);
     85 	else
     86 		fd = rom_open(devname, 2);
     87 
     88 	DPRINTF("devname = %s, fd = %d\n", devname, fd);
     89 	if (fd == -1)
     90 		return -1;
     91 
     92 	romdev.fd = fd;
     93 	if (strncmp(devname, "sonic", 5) == 0)
     94 		romdev.devtype = DT_NET;
     95 	else
     96 		romdev.devtype = DT_BLOCK;
     97 
     98 	f->f_dev = devsw;
     99 	f->f_devdata = &romdev;
    100 	*file = strchr(fname, ')') + 1;
    101 
    102 	if (romdev.devtype == DT_BLOCK)
    103 		bcopy(file_system_ufs, file_system, sizeof(file_system));
    104 	else {	/* DT_NET */
    105 		bcopy(file_system_nfs, file_system, sizeof(file_system));
    106 
    107 		if ((error = net_open(&romdev)) != 0) {
    108 			printf("Can't open NFS network connection on `%s'\n",
    109 			       devname);
    110 			return error;
    111 		}
    112 	}
    113 
    114 	return 0;
    115 }
    116 
    117 int
    118 dkopen(struct open_file *f, ...)
    119 {
    120 	DPRINTF("dkopen\n");
    121 	return 0;
    122 }
    123 
    124 int
    125 dkclose(f)
    126 	struct open_file *f;
    127 {
    128 	struct romdev *dev = f->f_devdata;
    129 
    130 	DPRINTF("dkclose\n");
    131 	if (apbus)
    132 		apcall_close(dev->fd);
    133 	else
    134 		rom_close(dev->fd);
    135 
    136 	return 0;
    137 }
    138 
    139 int
    140 dkstrategy(devdata, rw, blk, size, buf, rsize)
    141 	void *devdata;
    142 	int rw;
    143 	daddr_t blk;
    144 	size_t size;
    145 	void *buf;
    146 	size_t *rsize;	/* out: number of bytes transfered */
    147 {
    148 	struct romdev *dev = devdata;
    149 
    150 	/* XXX should use partition offset */
    151 
    152 	if (apbus) {
    153 		apcall_lseek(dev->fd, blk * 512, 0);
    154 		apcall_read(dev->fd, buf, size);
    155 	} else {
    156 		rom_lseek(dev->fd, blk * 512, 0);
    157 		rom_read(dev->fd, buf, size);
    158 	}
    159 	*rsize = size;		/* XXX */
    160 	return 0;
    161 }
    162