diff options
Diffstat (limited to 'include/asm-sparc64/ioctl.h')
-rw-r--r-- | include/asm-sparc64/ioctl.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/include/asm-sparc64/ioctl.h b/include/asm-sparc64/ioctl.h new file mode 100644 index 000000000000..253d0b57b316 --- /dev/null +++ b/include/asm-sparc64/ioctl.h | |||
@@ -0,0 +1,68 @@ | |||
1 | /* $Id: ioctl.h,v 1.2 1998/10/15 05:40:38 jj Exp $ */ | ||
2 | #ifndef _SPARC64_IOCTL_H | ||
3 | #define _SPARC64_IOCTL_H | ||
4 | |||
5 | /* | ||
6 | * Our DIR and SIZE overlap in order to simulteneously provide | ||
7 | * a non-zero _IOC_NONE (for binary compatibility) and | ||
8 | * 14 bits of size as on i386. Here's the layout: | ||
9 | * | ||
10 | * 0xE0000000 DIR | ||
11 | * 0x80000000 DIR = WRITE | ||
12 | * 0x40000000 DIR = READ | ||
13 | * 0x20000000 DIR = NONE | ||
14 | * 0x3FFF0000 SIZE (overlaps NONE bit) | ||
15 | * 0x0000FF00 TYPE | ||
16 | * 0x000000FF NR (CMD) | ||
17 | */ | ||
18 | |||
19 | #define _IOC_NRBITS 8 | ||
20 | #define _IOC_TYPEBITS 8 | ||
21 | #define _IOC_SIZEBITS 13 /* Actually 14, see below. */ | ||
22 | #define _IOC_DIRBITS 3 | ||
23 | |||
24 | #define _IOC_NRMASK ((1 << _IOC_NRBITS)-1) | ||
25 | #define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1) | ||
26 | #define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1) | ||
27 | #define _IOC_XSIZEMASK ((1 << (_IOC_SIZEBITS+1))-1) | ||
28 | #define _IOC_DIRMASK ((1 << _IOC_DIRBITS)-1) | ||
29 | |||
30 | #define _IOC_NRSHIFT 0 | ||
31 | #define _IOC_TYPESHIFT (_IOC_NRSHIFT + _IOC_NRBITS) | ||
32 | #define _IOC_SIZESHIFT (_IOC_TYPESHIFT + _IOC_TYPEBITS) | ||
33 | #define _IOC_DIRSHIFT (_IOC_SIZESHIFT + _IOC_SIZEBITS) | ||
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 | (((dir) << _IOC_DIRSHIFT) | \ | ||
41 | ((type) << _IOC_TYPESHIFT) | \ | ||
42 | ((nr) << _IOC_NRSHIFT) | \ | ||
43 | ((size) << _IOC_SIZESHIFT)) | ||
44 | |||
45 | #define _IO(type,nr) _IOC(_IOC_NONE,(type),(nr),0) | ||
46 | #define _IOR(type,nr,size) _IOC(_IOC_READ,(type),(nr),sizeof(size)) | ||
47 | #define _IOW(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),sizeof(size)) | ||
48 | #define _IOWR(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size)) | ||
49 | |||
50 | /* Used to decode ioctl numbers in drivers despite the leading underscore... */ | ||
51 | #define _IOC_DIR(nr) \ | ||
52 | ( (((((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) & (_IOC_WRITE|_IOC_READ)) != 0)? \ | ||
53 | (((nr) >> _IOC_DIRSHIFT) & (_IOC_WRITE|_IOC_READ)): \ | ||
54 | (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) ) | ||
55 | #define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK) | ||
56 | #define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK) | ||
57 | #define _IOC_SIZE(nr) \ | ||
58 | ((((((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) & (_IOC_WRITE|_IOC_READ)) == 0)? \ | ||
59 | 0: (((nr) >> _IOC_SIZESHIFT) & _IOC_XSIZEMASK)) | ||
60 | |||
61 | /* ...and for the PCMCIA and sound. */ | ||
62 | #define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT) | ||
63 | #define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT) | ||
64 | #define IOC_INOUT ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT) | ||
65 | #define IOCSIZE_MASK (_IOC_XSIZEMASK << _IOC_SIZESHIFT) | ||
66 | #define IOCSIZE_SHIFT (_IOC_SIZESHIFT) | ||
67 | |||
68 | #endif /* !(_SPARC64_IOCTL_H) */ | ||