[src/riastradh-drm2]: src/sys/external/bsd/drm2/include/linux Add <linux/ktim...

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/206b08cb47ef
branches:  riastradh-drm2
changeset: 788157:206b08cb47ef
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Wed Jul 24 02:29:27 2013 +0000

description:
Add <linux/ktime.h> for drm2.

diffstat:

 sys/external/bsd/drm2/include/linux/ktime.h |  139 ++++++++++++++++++++++++++++
 1 files changed, 139 insertions(+), 0 deletions(-)

diffs (143 lines):

diff -r f1160abca8eb -r 206b08cb47ef sys/external/bsd/drm2/include/linux/ktime.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/external/bsd/drm2/include/linux/ktime.h       Wed Jul 24 02:29:27 2013 +0000
@@ -0,0 +1,139 @@
+/*     $NetBSD: ktime.h,v 1.1.2.1 2013/07/24 02:29:27 riastradh Exp $  */
+
+/*-
+ * Copyright (c) 2013 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Taylor R. Campbell.
+ *
+ * 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, 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+#ifndef _LINUX_KTIME_H_
+#define _LINUX_KTIME_H_
+
+#include <sys/types.h>
+#include <sys/endian.h>
+#include <sys/time.h>
+
+union ktime {
+       int64_t kt_nsec;
+       struct {
+#if _BYTE_ORDER == _BIG_ENDIAN
+               int32_t ktsn_sec;
+               int32_t ktsn_nsec;
+#else
+               int32_t ktsn_nsec;
+               int32_t ktsn_sec;
+#endif
+       } kt_sec_nsec;
+};
+
+typedef union ktime ktime_t;
+
+static inline int64_t
+ktime_to_ns(ktime_t kt)
+{
+       return kt.kt_nsec;
+}
+
+static inline ktime_t
+ns_to_ktime(int64_t nsec)
+{
+       ktime_t kt;
+
+       kt.kt_nsec = nsec;
+
+       return kt;
+}
+
+static inline ktime_t
+ktime_sub(ktime_t a, ktime_t b)
+{
+       return ns_to_ktime(ktime_to_ns(a) - ktime_to_ns(b));
+}
+
+static inline ktime_t
+ktime_sub_ns(ktime_t a, int64_t nsec)
+{
+       return ns_to_ktime(ktime_to_ns(a) - nsec);
+}
+
+static inline struct timespec
+ns_to_timespec(int64_t nsec)
+{
+       struct timespec t;
+
+       t.tv_sec = (nsec / 1000000000ul);
+       t.tv_nsec = (nsec % 1000000000ul);
+
+       return t;
+}
+
+static inline struct timeval
+ns_to_timeval(int64_t nsec)
+{
+       struct timespec ts;
+       struct timeval tv;
+
+       ts = ns_to_timespec(nsec);
+       TIMESPEC_TO_TIMEVAL(&tv, &ts);
+
+       return tv;
+}
+
+static inline struct timespec
+ktime_to_timespec(ktime_t kt)
+{
+       return ns_to_timespec(ktime_to_ns(kt));
+}
+
+static inline struct timeval
+ktime_to_timeval(ktime_t kt)
+{
+       return ns_to_timeval(ktime_to_ns(kt));
+}
+
+static inline ktime_t
+ktime_get(void)
+{
+       struct timespec ts;
+       ktime_t kt;
+
+       /* XXX nanotime or nanouptime?  */
+       nanotime(&ts);
+
+       /* XXX Silently truncate?  */
+       kt.kt_sec_nsec.ktsn_sec = ts.tv_sec & 0xffffffffUL;
+       kt.kt_sec_nsec.ktsn_sec = ts.tv_nsec;
+
+       return kt;
+}
+
+static inline ktime_t
+ktime_get_monotonic_offset(void)
+{
+       return ns_to_ktime(0);  /* XXX Obviously wrong!  Revisit.  */
+}
+
+#endif  /* _LINUX_KTIME_H_ */