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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /arch/sparc/include/uapi/asm/ioctl.h | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | arch/sparc/include/uapi/asm/ioctl.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/arch/sparc/include/uapi/asm/ioctl.h b/arch/sparc/include/uapi/asm/ioctl.h new file mode 100644 index 0000000000..96c598fe74 --- /dev/null +++ b/arch/sparc/include/uapi/asm/ioctl.h @@ -0,0 +1,68 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef _SPARC_IOCTL_H +#define _SPARC_IOCTL_H + +/* + * Our DIR and SIZE overlap in order to simulteneously provide + * a non-zero _IOC_NONE (for binary compatibility) and + * 14 bits of size as on i386. Here's the layout: + * + * 0xE0000000 DIR + * 0x80000000 DIR = WRITE + * 0x40000000 DIR = READ + * 0x20000000 DIR = NONE + * 0x3FFF0000 SIZE (overlaps NONE bit) + * 0x0000FF00 TYPE + * 0x000000FF NR (CMD) + */ + +#define _IOC_NRBITS 8 +#define _IOC_TYPEBITS 8 +#define _IOC_SIZEBITS 13 /* Actually 14, see below. */ +#define _IOC_DIRBITS 3 + +#define _IOC_NRMASK ((1 << _IOC_NRBITS)-1) +#define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1) +#define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1) +#define _IOC_XSIZEMASK ((1 << (_IOC_SIZEBITS+1))-1) +#define _IOC_DIRMASK ((1 << _IOC_DIRBITS)-1) + +#define _IOC_NRSHIFT 0 +#define _IOC_TYPESHIFT (_IOC_NRSHIFT + _IOC_NRBITS) +#define _IOC_SIZESHIFT (_IOC_TYPESHIFT + _IOC_TYPEBITS) +#define _IOC_DIRSHIFT (_IOC_SIZESHIFT + _IOC_SIZEBITS) + +#define _IOC_NONE 1U +#define _IOC_READ 2U +#define _IOC_WRITE 4U + +#define _IOC(dir,type,nr,size) \ + (((dir) << _IOC_DIRSHIFT) | \ + ((type) << _IOC_TYPESHIFT) | \ + ((nr) << _IOC_NRSHIFT) | \ + ((size) << _IOC_SIZESHIFT)) + +#define _IO(type,nr) _IOC(_IOC_NONE,(type),(nr),0) +#define _IOR(type,nr,size) _IOC(_IOC_READ,(type),(nr),sizeof(size)) +#define _IOW(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),sizeof(size)) +#define _IOWR(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size)) + +/* Used to decode ioctl numbers in drivers despite the leading underscore... */ +#define _IOC_DIR(nr) \ + ( (((((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) & (_IOC_WRITE|_IOC_READ)) != 0)? \ + (((nr) >> _IOC_DIRSHIFT) & (_IOC_WRITE|_IOC_READ)): \ + (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) ) +#define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK) +#define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK) +#define _IOC_SIZE(nr) \ + ((((((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK) & (_IOC_WRITE|_IOC_READ)) == 0)? \ + 0: (((nr) >> _IOC_SIZESHIFT) & _IOC_XSIZEMASK)) + +/* ...and for the PCMCIA and sound. */ +#define IOC_IN (_IOC_WRITE << _IOC_DIRSHIFT) +#define IOC_OUT (_IOC_READ << _IOC_DIRSHIFT) +#define IOC_INOUT ((_IOC_WRITE|_IOC_READ) << _IOC_DIRSHIFT) +#define IOCSIZE_MASK (_IOC_XSIZEMASK << _IOC_SIZESHIFT) +#define IOCSIZE_SHIFT (_IOC_SIZESHIFT) + +#endif /* !(_SPARC_IOCTL_H) */ |