75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
/* Taken from <asm-$foo/ioctl.h> in the Linux kernel sources.
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* The ioctl.h file is pretty similar from one architecture to another.
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* */
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#ifndef IO_LINUX_H
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#define IO_LINUX_H
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/* Hmm. These constants vary a bit between systems. */
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/* (__sh__ includes both sh and sh64) */
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/* (__s390__ includes both s390 and s390x) */
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#if defined(__i386__) || defined(__sh__) || defined(__arm__) || defined(__x86_64__) || defined(__s390__)
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#define CHRONY_IOC_NRBITS 8
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#define CHRONY_IOC_TYPEBITS 8
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#define CHRONY_IOC_SIZEBITS 14
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#define CHRONY_IOC_DIRBITS 2
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#define CHRONY_IOC_NONE 0U
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#define CHRONY_IOC_WRITE 1U
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#define CHRONY_IOC_READ 2U
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#elif defined(__alpha__) || defined(__sparc__) || defined(__ppc__) || defined(__ppc64__) || defined(__sparc64__)
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#define CHRONY_IOC_NRBITS 8
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#define CHRONY_IOC_TYPEBITS 8
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#define CHRONY_IOC_SIZEBITS 13
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#define CHRONY_IOC_DIRBITS 2
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#define CHRONY_IOC_NONE 1U
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#define CHRONY_IOC_READ 2U
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#define CHRONY_IOC_WRITE 4U
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#elif defined(__mips__) || defined(__mips32__) || defined(__powerpc__)
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#define CHRONY_IOC_NRBITS 8
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#define CHRONY_IOC_TYPEBITS 8
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#define CHRONY_IOC_SIZEBITS 13
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#define CHRONY_IOC_DIRBITS 3
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#define CHRONY_IOC_NONE 1U
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#define CHRONY_IOC_READ 2U
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#define CHRONY_IOC_WRITE 4U
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#else
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#error "I don't know the values of the _IOC_* constants for your architecture"
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#endif
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#define CHRONY_IOC_NRMASK ((1 << CHRONY_IOC_NRBITS)-1)
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#define CHRONY_IOC_TYPEMASK ((1 << CHRONY_IOC_TYPEBITS)-1)
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#define CHRONY_IOC_SIZEMASK ((1 << CHRONY_IOC_SIZEBITS)-1)
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#define CHRONY_IOC_DIRMASK ((1 << CHRONY_IOC_DIRBITS)-1)
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#define CHRONY_IOC_NRSHIFT 0
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#define CHRONY_IOC_TYPESHIFT (CHRONY_IOC_NRSHIFT+CHRONY_IOC_NRBITS)
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#define CHRONY_IOC_SIZESHIFT (CHRONY_IOC_TYPESHIFT+CHRONY_IOC_TYPEBITS)
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#define CHRONY_IOC_DIRSHIFT (CHRONY_IOC_SIZESHIFT+CHRONY_IOC_SIZEBITS)
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#define CHRONY_IOC(dir,type,nr,size) \
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(((dir) << CHRONY_IOC_DIRSHIFT) | \
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((type) << CHRONY_IOC_TYPESHIFT) | \
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((nr) << CHRONY_IOC_NRSHIFT) | \
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((size) << CHRONY_IOC_SIZESHIFT))
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/* used to create numbers */
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#define CHRONY_IO(type,nr) CHRONY_IOC(CHRONY_IOC_NONE,(type),(nr),0)
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#define CHRONY_IOR(type,nr,size) CHRONY_IOC(CHRONY_IOC_READ,(type),(nr),sizeof(size))
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#define CHRONY_IOW(type,nr,size) CHRONY_IOC(CHRONY_IOC_WRITE,(type),(nr),sizeof(size))
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#define CHRONY_IOWR(type,nr,size) CHRONY_IOC(CHRONY_IOC_READ|CHRONY_IOC_WRITE,(type),(nr),sizeof(size))
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#define RTC_UIE_ON CHRONY_IO('p', 0x03) /* Update int. enable on */
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#define RTC_UIE_OFF CHRONY_IO('p', 0x04) /* ... off */
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#define RTC_RD_TIME CHRONY_IOR('p', 0x09, struct rtc_time) /* Read RTC time */
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#define RTC_SET_TIME CHRONY_IOW('p', 0x0a, struct rtc_time) /* Set RTC time */
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/* From mc146818.h */
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#define RTC_UIE 0x10 /* update-finished interrupt enable */
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#endif
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