TTY: remove re-assignments to tty_driver members
[linux-3.10.git] / arch / m68k / emu / natfeat.c
1 /*
2  * natfeat.c - ARAnyM hardware support via Native Features (natfeats)
3  *
4  * Copyright (c) 2005 Petr Stehlik of ARAnyM dev team
5  *
6  * Reworked for Linux by Roman Zippel <zippel@linux-m68k.org>
7  *
8  * This software may be used and distributed according to the terms of
9  * the GNU General Public License (GPL), incorporated herein by reference.
10  */
11
12 #include <linux/types.h>
13 #include <linux/console.h>
14 #include <linux/string.h>
15 #include <linux/kernel.h>
16 #include <linux/module.h>
17 #include <linux/io.h>
18 #include <asm/machdep.h>
19 #include <asm/natfeat.h>
20
21 asm("\n"
22 "       .global nf_get_id,nf_call\n"
23 "nf_get_id:\n"
24 "       .short  0x7300\n"
25 "       rts\n"
26 "nf_call:\n"
27 "       .short  0x7301\n"
28 "       rts\n"
29 "1:     moveq.l #0,%d0\n"
30 "       rts\n"
31 "       .section __ex_table,\"a\"\n"
32 "       .long   nf_get_id,1b\n"
33 "       .long   nf_call,1b\n"
34 "       .previous");
35 EXPORT_SYMBOL_GPL(nf_get_id);
36 EXPORT_SYMBOL_GPL(nf_call);
37
38 void nfprint(const char *fmt, ...)
39 {
40         static char buf[256];
41         va_list ap;
42         int n;
43
44         va_start(ap, fmt);
45         n = vsnprintf(buf, 256, fmt, ap);
46         nf_call(nf_get_id("NF_STDERR"), buf);
47         va_end(ap);
48 }
49
50 static void nf_poweroff(void)
51 {
52         long id = nf_get_id("NF_SHUTDOWN");
53
54         if (id)
55                 nf_call(id);
56 }
57
58 void nf_init(void)
59 {
60         unsigned long id, version;
61         char buf[256];
62
63         id = nf_get_id("NF_VERSION");
64         if (!id)
65                 return;
66         version = nf_call(id);
67
68         id = nf_get_id("NF_NAME");
69         if (!id)
70                 return;
71         nf_call(id, buf, 256);
72         buf[255] = 0;
73
74         pr_info("NatFeats found (%s, %lu.%lu)\n", buf, version >> 16,
75                 version & 0xffff);
76
77         mach_power_off = nf_poweroff;
78 }