The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/xrpuio.h

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    1 /*
    2  * ----------------------------------------------------------------------------
    3  * "THE BEER-WARE LICENSE" (Revision 42):
    4  * <phk@FreeBSD.org> wrote this file.  As long as you retain this notice you
    5  * can do whatever you want with this stuff. If we meet some day, and you think
    6  * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
    7  * ----------------------------------------------------------------------------
    8  *
    9  * $FreeBSD: releng/5.0/sys/sys/xrpuio.h 50477 1999-08-28 01:08:13Z peter $
   10  *
   11  */
   12 
   13 #ifndef _SYS_XRPUIO_H_
   14 #define _SYS_XRPUIO_H_
   15 
   16 #include <sys/ioccom.h>
   17 
   18 #define XRPU_MAX_PPS    16
   19 struct xrpu_timecounting {
   20 
   21         /* The timecounter itself */
   22         u_int           xt_addr_trigger;
   23         u_int           xt_addr_latch;
   24         unsigned        xt_mask;
   25         u_int32_t       xt_frequency;
   26         char            xt_name[16];
   27 
   28         /* The PPS latches */
   29         struct {
   30                 u_int   xt_addr_assert;
   31                 u_int   xt_addr_clear;
   32         } xt_pps[XRPU_MAX_PPS];
   33 };
   34 
   35 #define XRPU_IOC_TIMECOUNTING _IOW('6', 1, struct xrpu_timecounting)
   36 
   37 #endif /* _SYS_XRPUIO_H_ */

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