Finish process of moving the LinuxKPI module into the default kernel build.

- Move all files related to the LinuxKPI into sys/compat/linuxkpi and
  its subfolders.
- Update sys/conf/files and some Makefiles to use new file locations.
- Added description of COMPAT_LINUXKPI to sys/conf/NOTES which in turn
  adds the LinuxKPI to all LINT builds.
- The LinuxKPI can be added to the kernel by setting the
  COMPAT_LINUXKPI option. The OFED kernel option no longer builds the
  LinuxKPI into the kernel. This was done to keep the build rules for
  the LinuxKPI in sys/conf/files simple.
- Extend the LinuxKPI module to include support for USB by moving the
  Linux USB compat from usb.ko to linuxkpi.ko.
- Bump the FreeBSD_version.
- A universe kernel build has been done.

Reviewed by:	np @ (cxgb and cxgbe related changes only)
Sponsored by:	Mellanox Technologies

1 files changed, 131 insertions, 0 deletions

diff --git a/sys/compat/linuxkpi/common/include/linux/time.h b/sys/compat/linuxkpi/common/include/linux/time.h
new file mode 100644
index 000000000000..27516a4c917e
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/time.h
@@ -0,0 +1,131 @@
+/*-
+ * Copyright (c) 2014-2015 François Tigeot
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+#ifndef _LINUX_TIME_H_
+#define	_LINUX_TIME_H_
+
+#define	NSEC_PER_USEC	1000L
+#define	NSEC_PER_SEC	1000000000L
+
+#include <sys/time.h>
+#include <sys/stdint.h>
+
+static inline struct timeval
+ns_to_timeval(const int64_t nsec)
+{
+	struct timeval tv;
+	long rem;
+
+	if (nsec == 0) {
+		tv.tv_sec = 0;
+		tv.tv_usec = 0;
+		return (tv);
+	}
+
+	tv.tv_sec = nsec / NSEC_PER_SEC;
+	rem = nsec % NSEC_PER_SEC;
+	if (rem < 0) {
+		tv.tv_sec--;
+		rem += NSEC_PER_SEC;
+	}
+	tv.tv_usec = rem / 1000;
+	return (tv);
+}
+
+static inline int64_t
+timeval_to_ns(const struct timeval *tv)
+{
+	return ((int64_t)tv->tv_sec * NSEC_PER_SEC) +
+		tv->tv_usec * NSEC_PER_USEC;
+}
+
+#define getrawmonotonic(ts)	nanouptime(ts)
+
+static inline struct timespec
+timespec_sub(struct timespec lhs, struct timespec rhs)
+{
+	struct timespec ts;
+
+	ts.tv_sec = lhs.tv_sec;
+	ts.tv_nsec = lhs.tv_nsec;
+	timespecsub(&ts, &rhs);
+
+	return ts;
+}
+
+static inline void
+set_normalized_timespec(struct timespec *ts, time_t sec, int64_t nsec)
+{
+	/* XXX: this doesn't actually normalize anything */
+	ts->tv_sec = sec;
+	ts->tv_nsec = nsec;
+}
+
+static inline int64_t
+timespec_to_ns(const struct timespec *ts)
+{
+	return ((ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec);
+}
+
+static inline struct timespec
+ns_to_timespec(const int64_t nsec)
+{
+	struct timespec ts;
+	int32_t rem;
+
+	if (nsec == 0) {
+		ts.tv_sec = 0;
+		ts.tv_nsec = 0;
+		return (ts);
+	}
+
+	ts.tv_sec = nsec / NSEC_PER_SEC;
+	rem = nsec % NSEC_PER_SEC;
+	if (rem < 0) {
+		ts.tv_sec--;
+		rem += NSEC_PER_SEC;
+	}
+	ts.tv_nsec = rem;
+	return (ts);
+}
+
+static inline int
+timespec_valid(const struct timespec *ts)
+{
+	if (ts->tv_sec < 0 || ts->tv_sec > 100000000 ||
+	    ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000)
+		return (0);
+	return (1);
+}
+
+static inline unsigned long
+get_seconds(void)
+{
+	return time_uptime;
+}
+
+#endif /* _LINUX_TIME_H_ */