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| author | Richard Henderson | 2019-02-12 06:30:43 +0100 |
|---|---|---|
| committer | Cornelia Huck | 2019-02-18 11:25:43 +0100 |
| commit | 4037c39ba5d0507fa9e1ee302013b4b35e2526f5 (patch) | |
| tree | f0d4c81b8c902c6dcb3b04e3e032a321a8af4807 /target/s390x/s390-tod.h | |
| parent | s390x: always provide pci support (diff) | |
| download | qemu-4037c39ba5d0507fa9e1ee302013b4b35e2526f5.tar.gz qemu-4037c39ba5d0507fa9e1ee302013b4b35e2526f5.tar.xz qemu-4037c39ba5d0507fa9e1ee302013b4b35e2526f5.zip | |
target/s390x: Split out s390-tod.h
We will need these from CONFIG_USER_ONLY as well,
which cannot access include/hw/.
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20190212053044.29015-2-richard.henderson@linaro.org>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'target/s390x/s390-tod.h')
| -rw-r--r-- | target/s390x/s390-tod.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/target/s390x/s390-tod.h b/target/s390x/s390-tod.h new file mode 100644 index 0000000000..8b74d6a6d8 --- /dev/null +++ b/target/s390x/s390-tod.h @@ -0,0 +1,29 @@ +/* + * TOD (Time Of Day) clock + * + * Copyright 2018 Red Hat, Inc. + * Author(s): David Hildenbrand <david@redhat.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef TARGET_S390_TOD_H +#define TARGET_S390_TOD_H + +/* The value of the TOD clock for 1.1.1970. */ +#define TOD_UNIX_EPOCH 0x7d91048bca000000ULL + +/* Converts ns to s390's clock format */ +static inline uint64_t time2tod(uint64_t ns) +{ + return (ns << 9) / 125 + (((ns & 0xff80000000000000ull) / 125) << 9); +} + +/* Converts s390's clock format to ns */ +static inline uint64_t tod2time(uint64_t t) +{ + return ((t >> 9) * 125) + (((t & 0x1ff) * 125) >> 9); +} + +#endif |