1 /*-
2 * Copyright (C) 2014 Nathan Whitehorn
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
21 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
22 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
23 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
28
29 #include <sys/types.h>
30 #include <stdarg.h>
31 #include "bootstrap.h"
32 #include "host_syscall.h"
33
34 static int hostdisk_init(void);
35 static int hostdisk_strategy(void *devdata, int flag, daddr_t dblk,
36 size_t size, char *buf, size_t *rsize);
37 static int hostdisk_open(struct open_file *f, ...);
38 static int hostdisk_close(struct open_file *f);
39 static int hostdisk_ioctl(struct open_file *f, u_long cmd, void *data);
40 static int hostdisk_print(int verbose);
41
42 struct devsw hostdisk = {
43 "/dev",
44 DEVT_DISK,
45 hostdisk_init,
46 hostdisk_strategy,
47 hostdisk_open,
48 hostdisk_close,
49 hostdisk_ioctl,
50 hostdisk_print,
51 };
52
53 static int
hostdisk_init(void)54 hostdisk_init(void)
55 {
56
57 return (0);
58 }
59
60 static int
hostdisk_strategy(void * devdata,int flag,daddr_t dblk,size_t size,char * buf,size_t * rsize)61 hostdisk_strategy(void *devdata, int flag, daddr_t dblk, size_t size,
62 char *buf, size_t *rsize)
63 {
64 struct devdesc *desc = devdata;
65 daddr_t pos;
66 int n;
67 uint64_t res;
68 uint32_t posl, posh;
69
70 pos = dblk * 512;
71
72 posl = pos & 0xffffffff;
73 posh = (pos >> 32) & 0xffffffff;
74 if (host_llseek(desc->d_unit, posh, posl, &res, 0) < 0) {
75 printf("Seek error\n");
76 return (EIO);
77 }
78 n = host_read(desc->d_unit, buf, size);
79
80 if (n < 0)
81 return (EIO);
82
83 *rsize = n;
84 return (0);
85 }
86
87 static int
hostdisk_open(struct open_file * f,...)88 hostdisk_open(struct open_file *f, ...)
89 {
90 struct devdesc *desc;
91 va_list vl;
92
93 va_start(vl, f);
94 desc = va_arg(vl, struct devdesc *);
95 va_end(vl);
96
97 desc->d_unit = host_open(desc->d_opendata, O_RDONLY, 0);
98
99 if (desc->d_unit <= 0) {
100 printf("hostdisk_open: couldn't open %s: %d\n",
101 (char *)desc->d_opendata, desc->d_unit);
102 return (ENOENT);
103 }
104
105 return (0);
106 }
107
108 static int
hostdisk_close(struct open_file * f)109 hostdisk_close(struct open_file *f)
110 {
111 struct devdesc *desc = f->f_devdata;
112
113 host_close(desc->d_unit);
114 return (0);
115 }
116
117 static int
hostdisk_ioctl(struct open_file * f,u_long cmd,void * data)118 hostdisk_ioctl(struct open_file *f, u_long cmd, void *data)
119 {
120
121 return (EINVAL);
122 }
123
124 static int
hostdisk_print(int verbose)125 hostdisk_print(int verbose)
126 {
127 return (0);
128 }
129
130