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Diffstat (limited to 'include/asm-mips/ioctl.h')
-rw-r--r-- | include/asm-mips/ioctl.h | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/include/asm-mips/ioctl.h b/include/asm-mips/ioctl.h deleted file mode 100644 index 85067e248a83..000000000000 --- a/include/asm-mips/ioctl.h +++ /dev/null | |||
@@ -1,94 +0,0 @@ | |||
1 | /* | ||
2 | * This file is subject to the terms and conditions of the GNU General Public | ||
3 | * License. See the file "COPYING" in the main directory of this archive | ||
4 | * for more details. | ||
5 | * | ||
6 | * Copyright (C) 1995, 96, 99, 2001 Ralf Baechle | ||
7 | */ | ||
8 | #ifndef _ASM_IOCTL_H | ||
9 | #define _ASM_IOCTL_H | ||
10 | |||
11 | /* | ||
12 | * The original linux ioctl numbering scheme was just a general | ||
13 | * "anything goes" setup, where more or less random numbers were | ||
14 | * assigned. Sorry, I was clueless when I started out on this. | ||
15 | * | ||
16 | * On the alpha, we'll try to clean it up a bit, using a more sane | ||
17 | * ioctl numbering, and also trying to be compatible with OSF/1 in | ||
18 | * the process. I'd like to clean it up for the i386 as well, but | ||
19 | * it's so painful recognizing both the new and the old numbers.. | ||
20 | * | ||
21 | * The same applies for for the MIPS ABI; in fact even the macros | ||
22 | * from Linux/Alpha fit almost perfectly. | ||
23 | */ | ||
24 | |||
25 | #define _IOC_NRBITS 8 | ||
26 | #define _IOC_TYPEBITS 8 | ||
27 | #define _IOC_SIZEBITS 13 | ||
28 | #define _IOC_DIRBITS 3 | ||
29 | |||
30 | #define _IOC_NRMASK ((1 << _IOC_NRBITS)-1) | ||
31 | #define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1) | ||
32 | #define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1) | ||
33 | #define _IOC_DIRMASK ((1 << _IOC_DIRBITS)-1) | ||
34 | |||
35 | #define _IOC_NRSHIFT 0 | ||
36 | #define _IOC_TYPESHIFT (_IOC_NRSHIFT+_IOC_NRBITS) | ||
37 | #define _IOC_SIZESHIFT (_IOC_TYPESHIFT+_IOC_TYPEBITS) | ||
38 | #define _IOC_DIRSHIFT (_IOC_SIZESHIFT+_IOC_SIZEBITS) | ||
39 | |||
40 | /* | ||
41 | * Direction bits _IOC_NONE could be 0, but OSF/1 gives it a bit. | ||
42 | * And this turns out useful to catch old ioctl numbers in header | ||
43 | * files for us. | ||
44 | */ | ||
45 | #define _IOC_NONE 1U | ||
46 | #define _IOC_READ 2U | ||
47 | #define _IOC_WRITE 4U | ||
48 | |||
49 | /* | ||
50 | * The following are included for compatibility | ||
51 | */ | ||
52 | #define _IOC_VOID 0x20000000 | ||
53 | #define _IOC_OUT 0x40000000 | ||
54 | #define _IOC_IN 0x80000000 | ||
55 | #define _IOC_INOUT (IOC_IN|IOC_OUT) | ||
56 | |||
57 | #define _IOC(dir, type, nr, size) \ | ||
58 | (((dir) << _IOC_DIRSHIFT) | \ | ||
59 | ((type) << _IOC_TYPESHIFT) | \ | ||
60 | ((nr) << _IOC_NRSHIFT) | \ | ||
61 | ((size) << _IOC_SIZESHIFT)) | ||
62 | |||
63 | /* provoke compile error for invalid uses of size argument */ | ||
64 | extern unsigned int __invalid_size_argument_for_IOC; | ||
65 | #define _IOC_TYPECHECK(t) \ | ||
66 | ((sizeof(t) == sizeof(t[1]) && \ | ||
67 | sizeof(t) < (1 << _IOC_SIZEBITS)) ? \ | ||
68 | sizeof(t) : __invalid_size_argument_for_IOC) | ||
69 | |||
70 | /* used to create numbers */ | ||
71 | #define _IO(type, nr) _IOC(_IOC_NONE, (type), (nr), 0) | ||
72 | #define _IOR(type, nr, size) _IOC(_IOC_READ, (type), (nr), (_IOC_TYPECHECK(size))) | ||
73 | #define _IOW(type, nr, size) _IOC(_IOC_WRITE, (type), (nr), (_IOC_TYPECHECK(size))) | ||
74 | #define _IOWR(type, nr, size) _IOC(_IOC_READ|_IOC_WRITE, (type), (nr), (_IOC_TYPECHECK(size))) | ||
75 | #define _IOR_BAD(type, nr, size) _IOC(_IOC_READ, (type), (nr), sizeof(size)) | ||
76 | #define _IOW_BAD(type, nr, size) _IOC(_IOC_WRITE, (type), (nr), sizeof(size)) | ||
77 | #define _IOWR_BAD(type, nr, size) _IOC(_IOC_READ|_IOC_WRITE, (type), (nr), sizeof(size)) | ||
78 | |||
79 | |||
80 | /* used to decode them.. */ | ||
81 | #define _IOC_DIR(nr) (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) | ||
82 | #define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK) | ||
83 | #define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK) | ||
84 | #define _IOC_SIZE(nr) (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK) | ||
85 | |||
86 | /* ...and for the drivers/sound files... */ | ||
87 | |||
88 | #define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT) | ||
89 | #define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT) | ||
90 | #define IOC_INOUT ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT) | ||
91 | #define IOCSIZE_MASK (_IOC_SIZEMASK << _IOC_SIZESHIFT) | ||
92 | #define IOCSIZE_SHIFT (_IOC_SIZESHIFT) | ||
93 | |||
94 | #endif /* _ASM_IOCTL_H */ | ||