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48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
#pragma once
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//The below defines are based on Linux kernel ioctl.h.
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#define _NV_IOC_NRBITS 8
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#define _NV_IOC_TYPEBITS 8
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#define _NV_IOC_SIZEBITS 14
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#define _NV_IOC_DIRBITS 2
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#define _NV_IOC_NRMASK ((1 << _NV_IOC_NRBITS)-1)
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#define _NV_IOC_TYPEMASK ((1 << _NV_IOC_TYPEBITS)-1)
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#define _NV_IOC_SIZEMASK ((1 << _NV_IOC_SIZEBITS)-1)
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#define _NV_IOC_DIRMASK ((1 << _NV_IOC_DIRBITS)-1)
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#define _NV_IOC_NRSHIFT 0
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#define _NV_IOC_TYPESHIFT (_NV_IOC_NRSHIFT+_NV_IOC_NRBITS)
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#define _NV_IOC_SIZESHIFT (_NV_IOC_TYPESHIFT+_NV_IOC_TYPEBITS)
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#define _NV_IOC_DIRSHIFT (_NV_IOC_SIZESHIFT+_NV_IOC_SIZEBITS)
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/*
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* Direction bits.
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*/
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#define _NV_IOC_NONE 0U
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#define _NV_IOC_WRITE 1U
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#define _NV_IOC_READ 2U
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#define _NV_IOC(dir,type,nr,size) \
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(((dir) << _NV_IOC_DIRSHIFT) | \
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((type) << _NV_IOC_TYPESHIFT) | \
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((nr) << _NV_IOC_NRSHIFT) | \
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((size) << _NV_IOC_SIZESHIFT))
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/* used to create numbers */
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#define _NV_IO(type,nr) _NV_IOC(_NV_IOC_NONE,(type),(nr),0)
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#define _NV_IOR(type,nr,size) _NV_IOC(_NV_IOC_READ,(type),(nr),sizeof(size))
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#define _NV_IOW(type,nr,size) _NV_IOC(_NV_IOC_WRITE,(type),(nr),sizeof(size))
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#define _NV_IOWR(type,nr,size) _NV_IOC(_NV_IOC_READ|_NV_IOC_WRITE,(type),(nr),sizeof(size))
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/* used to decode ioctl numbers.. */
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#define _NV_IOC_DIR(nr) (((nr) >> _NV_IOC_DIRSHIFT) & _NV_IOC_DIRMASK)
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#define _NV_IOC_TYPE(nr) (((nr) >> _NV_IOC_TYPESHIFT) & _NV_IOC_TYPEMASK)
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#define _NV_IOC_NR(nr) (((nr) >> _NV_IOC_NRSHIFT) & _NV_IOC_NRMASK)
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#define _NV_IOC_SIZE(nr) (((nr) >> _NV_IOC_SIZESHIFT) & _NV_IOC_SIZEMASK)
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#define __nv_in
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#define __nv_out
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#define __nv_inout
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