1 /* 1 /*
2 * natfeat.c - ARAnyM hardware support via Nat 2 * natfeat.c - ARAnyM hardware support via Native Features (natfeats)
3 * 3 *
4 * Copyright (c) 2005 Petr Stehlik of ARAnyM d 4 * Copyright (c) 2005 Petr Stehlik of ARAnyM dev team
5 * 5 *
6 * Reworked for Linux by Roman Zippel <zippel@ 6 * Reworked for Linux by Roman Zippel <zippel@linux-m68k.org>
7 * 7 *
8 * This software may be used and distributed a 8 * This software may be used and distributed according to the terms of
9 * the GNU General Public License (GPL), incor 9 * the GNU General Public License (GPL), incorporated herein by reference.
10 */ 10 */
11 11
12 #include <linux/init.h> 12 #include <linux/init.h>
13 #include <linux/types.h> 13 #include <linux/types.h>
14 #include <linux/console.h> 14 #include <linux/console.h>
15 #include <linux/string.h> 15 #include <linux/string.h>
16 #include <linux/kernel.h> 16 #include <linux/kernel.h>
17 #include <linux/module.h> 17 #include <linux/module.h>
18 #include <linux/reboot.h> 18 #include <linux/reboot.h>
19 #include <linux/io.h> 19 #include <linux/io.h>
20 #include <asm/machdep.h> 20 #include <asm/machdep.h>
21 #include <asm/natfeat.h> 21 #include <asm/natfeat.h>
22 22
23 extern long nf_get_id_phys(unsigned long featu 23 extern long nf_get_id_phys(unsigned long feature_name);
24 24
25 asm("\n" 25 asm("\n"
26 " .global nf_get_id_phys,nf_call\n" 26 " .global nf_get_id_phys,nf_call\n"
27 "nf_get_id_phys:\n" 27 "nf_get_id_phys:\n"
28 " .short 0x7300\n" 28 " .short 0x7300\n"
29 " rts\n" 29 " rts\n"
30 "nf_call:\n" 30 "nf_call:\n"
31 " .short 0x7301\n" 31 " .short 0x7301\n"
32 " rts\n" 32 " rts\n"
33 "1: moveq.l #0,%d0\n" 33 "1: moveq.l #0,%d0\n"
34 " rts\n" 34 " rts\n"
35 " .section __ex_table,\"a\"\n" 35 " .section __ex_table,\"a\"\n"
36 " .long nf_get_id_phys,1b\n" 36 " .long nf_get_id_phys,1b\n"
37 " .long nf_call,1b\n" 37 " .long nf_call,1b\n"
38 " .previous"); 38 " .previous");
39 EXPORT_SYMBOL_GPL(nf_call); 39 EXPORT_SYMBOL_GPL(nf_call);
40 40
41 long nf_get_id(const char *feature_name) 41 long nf_get_id(const char *feature_name)
42 { 42 {
43 /* feature_name may be in vmalloc()ed 43 /* feature_name may be in vmalloc()ed memory, so make a copy */
44 char name_copy[32]; 44 char name_copy[32];
45 ssize_t n; 45 ssize_t n;
46 46
47 n = strscpy(name_copy, feature_name, s 47 n = strscpy(name_copy, feature_name, sizeof(name_copy));
48 if (n < 0) 48 if (n < 0)
49 return 0; 49 return 0;
50 50
51 return nf_get_id_phys(virt_to_phys(nam 51 return nf_get_id_phys(virt_to_phys(name_copy));
52 } 52 }
53 EXPORT_SYMBOL_GPL(nf_get_id); 53 EXPORT_SYMBOL_GPL(nf_get_id);
54 54
55 void nfprint(const char *fmt, ...) 55 void nfprint(const char *fmt, ...)
56 { 56 {
57 static char buf[256]; 57 static char buf[256];
58 va_list ap; 58 va_list ap;
59 59
60 va_start(ap, fmt); 60 va_start(ap, fmt);
61 vsnprintf(buf, 256, fmt, ap); 61 vsnprintf(buf, 256, fmt, ap);
62 nf_call(nf_get_id("NF_STDERR"), virt_t 62 nf_call(nf_get_id("NF_STDERR"), virt_to_phys(buf));
63 va_end(ap); 63 va_end(ap);
64 } 64 }
65 65
66 static void nf_poweroff(void) 66 static void nf_poweroff(void)
67 { 67 {
68 long id = nf_get_id("NF_SHUTDOWN"); 68 long id = nf_get_id("NF_SHUTDOWN");
69 69
70 if (id) 70 if (id)
71 nf_call(id); 71 nf_call(id);
72 } 72 }
73 73
74 void __init nf_init(void) 74 void __init nf_init(void)
75 { 75 {
76 unsigned long id, version; 76 unsigned long id, version;
77 char buf[256]; 77 char buf[256];
78 78
79 id = nf_get_id("NF_VERSION"); 79 id = nf_get_id("NF_VERSION");
80 if (!id) 80 if (!id)
81 return; 81 return;
82 version = nf_call(id); 82 version = nf_call(id);
83 83
84 id = nf_get_id("NF_NAME"); 84 id = nf_get_id("NF_NAME");
85 if (!id) 85 if (!id)
86 return; 86 return;
87 nf_call(id, virt_to_phys(buf), 256); 87 nf_call(id, virt_to_phys(buf), 256);
88 buf[255] = 0; 88 buf[255] = 0;
89 89
90 pr_info("NatFeats found (%s, %lu.%lu)\ 90 pr_info("NatFeats found (%s, %lu.%lu)\n", buf, version >> 16,
91 version & 0xffff); 91 version & 0xffff);
92 92
93 register_platform_power_off(nf_powerof 93 register_platform_power_off(nf_poweroff);
94 } 94 }
95 95
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