diff options
-rw-r--r-- | include/asm-powerpc/ioctl.h | 58 |
1 files changed, 1 insertions, 57 deletions
diff --git a/include/asm-powerpc/ioctl.h b/include/asm-powerpc/ioctl.h index 8eb99848c402..57d68304218b 100644 --- a/include/asm-powerpc/ioctl.h +++ b/include/asm-powerpc/ioctl.h | |||
@@ -1,69 +1,13 @@ | |||
1 | #ifndef _ASM_POWERPC_IOCTL_H | 1 | #ifndef _ASM_POWERPC_IOCTL_H |
2 | #define _ASM_POWERPC_IOCTL_H | 2 | #define _ASM_POWERPC_IOCTL_H |
3 | 3 | ||
4 | |||
5 | /* | ||
6 | * this was copied from the alpha as it's a bit cleaner there. | ||
7 | * -- Cort | ||
8 | */ | ||
9 | |||
10 | #define _IOC_NRBITS 8 | ||
11 | #define _IOC_TYPEBITS 8 | ||
12 | #define _IOC_SIZEBITS 13 | 4 | #define _IOC_SIZEBITS 13 |
13 | #define _IOC_DIRBITS 3 | 5 | #define _IOC_DIRBITS 3 |
14 | 6 | ||
15 | #define _IOC_NRMASK ((1 << _IOC_NRBITS)-1) | ||
16 | #define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1) | ||
17 | #define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1) | ||
18 | #define _IOC_DIRMASK ((1 << _IOC_DIRBITS)-1) | ||
19 | |||
20 | #define _IOC_NRSHIFT 0 | ||
21 | #define _IOC_TYPESHIFT (_IOC_NRSHIFT+_IOC_NRBITS) | ||
22 | #define _IOC_SIZESHIFT (_IOC_TYPESHIFT+_IOC_TYPEBITS) | ||
23 | #define _IOC_DIRSHIFT (_IOC_SIZESHIFT+_IOC_SIZEBITS) | ||
24 | |||
25 | /* | ||
26 | * Direction bits _IOC_NONE could be 0, but OSF/1 gives it a bit. | ||
27 | * And this turns out useful to catch old ioctl numbers in header | ||
28 | * files for us. | ||
29 | */ | ||
30 | #define _IOC_NONE 1U | 7 | #define _IOC_NONE 1U |
31 | #define _IOC_READ 2U | 8 | #define _IOC_READ 2U |
32 | #define _IOC_WRITE 4U | 9 | #define _IOC_WRITE 4U |
33 | 10 | ||
34 | #define _IOC(dir,type,nr,size) \ | 11 | #include <asm-generic/ioctl.h> |
35 | (((dir) << _IOC_DIRSHIFT) | \ | ||
36 | ((type) << _IOC_TYPESHIFT) | \ | ||
37 | ((nr) << _IOC_NRSHIFT) | \ | ||
38 | ((size) << _IOC_SIZESHIFT)) | ||
39 | |||
40 | /* provoke compile error for invalid uses of size argument */ | ||
41 | extern unsigned int __invalid_size_argument_for_IOC; | ||
42 | #define _IOC_TYPECHECK(t) \ | ||
43 | ((sizeof(t) == sizeof(t[1]) && \ | ||
44 | sizeof(t) < (1 << _IOC_SIZEBITS)) ? \ | ||
45 | sizeof(t) : __invalid_size_argument_for_IOC) | ||
46 | |||
47 | /* used to create numbers */ | ||
48 | #define _IO(type,nr) _IOC(_IOC_NONE,(type),(nr),0) | ||
49 | #define _IOR(type,nr,size) _IOC(_IOC_READ,(type),(nr),(_IOC_TYPECHECK(size))) | ||
50 | #define _IOW(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size))) | ||
51 | #define _IOWR(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size))) | ||
52 | #define _IOR_BAD(type,nr,size) _IOC(_IOC_READ,(type),(nr),sizeof(size)) | ||
53 | #define _IOW_BAD(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),sizeof(size)) | ||
54 | #define _IOWR_BAD(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size)) | ||
55 | |||
56 | /* used to decode them.. */ | ||
57 | #define _IOC_DIR(nr) (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) | ||
58 | #define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK) | ||
59 | #define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK) | ||
60 | #define _IOC_SIZE(nr) (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK) | ||
61 | |||
62 | /* various drivers, such as the pcmcia stuff, need these... */ | ||
63 | #define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT) | ||
64 | #define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT) | ||
65 | #define IOC_INOUT ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT) | ||
66 | #define IOCSIZE_MASK (_IOC_SIZEMASK << _IOC_SIZESHIFT) | ||
67 | #define IOCSIZE_SHIFT (_IOC_SIZESHIFT) | ||
68 | 12 | ||
69 | #endif /* _ASM_POWERPC_IOCTL_H */ | 13 | #endif /* _ASM_POWERPC_IOCTL_H */ |