diff options
Diffstat (limited to 'include/asm-alpha/ioctl.h')
-rw-r--r-- | include/asm-alpha/ioctl.h | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/include/asm-alpha/ioctl.h b/include/asm-alpha/ioctl.h deleted file mode 100644 index fc63727f4178..000000000000 --- a/include/asm-alpha/ioctl.h +++ /dev/null | |||
@@ -1,66 +0,0 @@ | |||
1 | #ifndef _ALPHA_IOCTL_H | ||
2 | #define _ALPHA_IOCTL_H | ||
3 | |||
4 | /* | ||
5 | * The original linux ioctl numbering scheme was just a general | ||
6 | * "anything goes" setup, where more or less random numbers were | ||
7 | * assigned. Sorry, I was clueless when I started out on this. | ||
8 | * | ||
9 | * On the alpha, we'll try to clean it up a bit, using a more sane | ||
10 | * ioctl numbering, and also trying to be compatible with OSF/1 in | ||
11 | * the process. I'd like to clean it up for the i386 as well, but | ||
12 | * it's so painful recognizing both the new and the old numbers.. | ||
13 | */ | ||
14 | |||
15 | #define _IOC_NRBITS 8 | ||
16 | #define _IOC_TYPEBITS 8 | ||
17 | #define _IOC_SIZEBITS 13 | ||
18 | #define _IOC_DIRBITS 3 | ||
19 | |||
20 | #define _IOC_NRMASK ((1 << _IOC_NRBITS)-1) | ||
21 | #define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1) | ||
22 | #define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1) | ||
23 | #define _IOC_DIRMASK ((1 << _IOC_DIRBITS)-1) | ||
24 | |||
25 | #define _IOC_NRSHIFT 0 | ||
26 | #define _IOC_TYPESHIFT (_IOC_NRSHIFT+_IOC_NRBITS) | ||
27 | #define _IOC_SIZESHIFT (_IOC_TYPESHIFT+_IOC_TYPEBITS) | ||
28 | #define _IOC_DIRSHIFT (_IOC_SIZESHIFT+_IOC_SIZEBITS) | ||
29 | |||
30 | /* | ||
31 | * Direction bits _IOC_NONE could be 0, but OSF/1 gives it a bit. | ||
32 | * And this turns out useful to catch old ioctl numbers in header | ||
33 | * files for us. | ||
34 | */ | ||
35 | #define _IOC_NONE 1U | ||
36 | #define _IOC_READ 2U | ||
37 | #define _IOC_WRITE 4U | ||
38 | |||
39 | #define _IOC(dir,type,nr,size) \ | ||
40 | ((unsigned int) \ | ||
41 | (((dir) << _IOC_DIRSHIFT) | \ | ||
42 | ((type) << _IOC_TYPESHIFT) | \ | ||
43 | ((nr) << _IOC_NRSHIFT) | \ | ||
44 | ((size) << _IOC_SIZESHIFT))) | ||
45 | |||
46 | /* used to create numbers */ | ||
47 | #define _IO(type,nr) _IOC(_IOC_NONE,(type),(nr),0) | ||
48 | #define _IOR(type,nr,size) _IOC(_IOC_READ,(type),(nr),sizeof(size)) | ||
49 | #define _IOW(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),sizeof(size)) | ||
50 | #define _IOWR(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size)) | ||
51 | |||
52 | /* used to decode them.. */ | ||
53 | #define _IOC_DIR(nr) (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) | ||
54 | #define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK) | ||
55 | #define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK) | ||
56 | #define _IOC_SIZE(nr) (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK) | ||
57 | |||
58 | /* ...and for the drivers/sound files... */ | ||
59 | |||
60 | #define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT) | ||
61 | #define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT) | ||
62 | #define IOC_INOUT ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT) | ||
63 | #define IOCSIZE_MASK (_IOC_SIZEMASK << _IOC_SIZESHIFT) | ||
64 | #define IOCSIZE_SHIFT (_IOC_SIZESHIFT) | ||
65 | |||
66 | #endif /* _ALPHA_IOCTL_H */ | ||