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authorJoel Sherrill <joel.sherrill@oarcorp.com>2012-03-09 09:19:06 -0600
committerJoel Sherrill <joel.sherrill@oarcorp.com>2012-03-09 09:24:22 -0600
commitfcce4d20184e7c34a1576c24acf333082af1cfa9 (patch)
treecd35059a237a6d780908bf7c8bd1252660d52f0f /freebsd/sys/timetc.h
parentRemove generic in_cksum.h (diff)
downloadrtems-libbsd-fcce4d20184e7c34a1576c24acf333082af1cfa9.tar.bz2
Add time support files from FreeBSD to build to resolve more symbols
+ Add multiple files + Add them to freebsd-to-rtems.py + Regenerate Makefile
Diffstat (limited to 'freebsd/sys/timetc.h')
-rw-r--r--freebsd/sys/timetc.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/freebsd/sys/timetc.h b/freebsd/sys/timetc.h
new file mode 100644
index 00000000..6b1c9b91
--- /dev/null
+++ b/freebsd/sys/timetc.h
@@ -0,0 +1,78 @@
+/*-
+ * ----------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
+ * can do whatever you want with this stuff. If we meet some day, and you think
+ * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
+ * ----------------------------------------------------------------------------
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _SYS_TIMETC_HH_
+#define _SYS_TIMETC_HH_
+
+#ifndef _KERNEL
+#error "no user-serviceable parts inside"
+#endif
+
+/*-
+ * `struct timecounter' is the interface between the hardware which implements
+ * a timecounter and the MI code which uses this to keep track of time.
+ *
+ * A timecounter is a binary counter which has two properties:
+ * * it runs at a fixed, known frequency.
+ * * it has sufficient bits to not roll over in less than approximately
+ * max(2 msec, 2/HZ seconds). (The value 2 here is really 1 + delta,
+ * for some indeterminate value of delta.)
+ */
+
+struct timecounter;
+typedef u_int timecounter_get_t(struct timecounter *);
+typedef void timecounter_pps_t(struct timecounter *);
+
+struct timecounter {
+ timecounter_get_t *tc_get_timecount;
+ /*
+ * This function reads the counter. It is not required to
+ * mask any unimplemented bits out, as long as they are
+ * constant.
+ */
+ timecounter_pps_t *tc_poll_pps;
+ /*
+ * This function is optional. It will be called whenever the
+ * timecounter is rewound, and is intended to check for PPS
+ * events. Normal hardware does not need it but timecounters
+ * which latch PPS in hardware (like sys/pci/xrpu.c) do.
+ */
+ u_int tc_counter_mask;
+ /* This mask should mask off any unimplemented bits. */
+ u_int64_t tc_frequency;
+ /* Frequency of the counter in Hz. */
+ char *tc_name;
+ /* Name of the timecounter. */
+ int tc_quality;
+ /*
+ * Used to determine if this timecounter is better than
+ * another timecounter higher means better. Negative
+ * means "only use at explicit request".
+ */
+
+ void *tc_priv;
+ /* Pointer to the timecounter's private parts. */
+ struct timecounter *tc_next;
+ /* Pointer to the next timecounter. */
+};
+
+extern struct timecounter *timecounter;
+
+u_int64_t tc_getfrequency(void);
+void tc_init(struct timecounter *tc);
+void tc_setclock(struct timespec *ts);
+void tc_ticktock(void);
+
+#ifdef SYSCTL_DECL
+SYSCTL_DECL(_kern_timecounter);
+#endif
+
+#endif /* !_SYS_TIMETC_HH_ */