2f93d8b04a
softmmu/rtc.c defines two public functions: qemu_get_timedate() and qemu_timedate_diff(). Currently we keep the prototypes for these in qemu-common.h, but most files don't need them. Move them to their own header, a new include/sysemu/rtc.h. Since the C files using these two functions did not need to include qemu-common.h for any other reason, we can remove those include lines when we add the include of the new rtc.h. The license for the .h file follows that of the softmmu/rtc.c where both the functions are defined. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
90 lines
2.2 KiB
C
90 lines
2.2 KiB
C
/*
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* TOD (Time Of Day) clock - TCG implementation
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*
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* Copyright 2018 Red Hat, Inc.
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* Author(s): David Hildenbrand <david@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "hw/s390x/tod.h"
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#include "qemu/timer.h"
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#include "qemu/cutils.h"
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#include "qemu/module.h"
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#include "cpu.h"
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#include "tcg/tcg_s390x.h"
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#include "sysemu/rtc.h"
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static void qemu_s390_tod_get(const S390TODState *td, S390TOD *tod,
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Error **errp)
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{
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*tod = td->base;
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tod->low += time2tod(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
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if (tod->low < td->base.low) {
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tod->high++;
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}
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}
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static void qemu_s390_tod_set(S390TODState *td, const S390TOD *tod,
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Error **errp)
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{
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CPUState *cpu;
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td->base = *tod;
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td->base.low -= time2tod(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
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if (td->base.low > tod->low) {
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td->base.high--;
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}
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/*
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* The TOD has been changed and we have to recalculate the CKC values
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* for all CPUs. We do this asynchronously, as "SET CLOCK should be
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* issued only while all other activity on all CPUs .. has been
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* suspended".
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*/
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CPU_FOREACH(cpu) {
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async_run_on_cpu(cpu, tcg_s390_tod_updated, RUN_ON_CPU_NULL);
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}
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}
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static void qemu_s390_tod_class_init(ObjectClass *oc, void *data)
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{
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S390TODClass *tdc = S390_TOD_CLASS(oc);
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tdc->get = qemu_s390_tod_get;
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tdc->set = qemu_s390_tod_set;
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}
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static void qemu_s390_tod_init(Object *obj)
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{
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S390TODState *td = S390_TOD(obj);
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struct tm tm;
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qemu_get_timedate(&tm, 0);
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td->base.high = 0;
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td->base.low = TOD_UNIX_EPOCH + (time2tod(mktimegm(&tm)) * 1000000000ULL);
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if (td->base.low < TOD_UNIX_EPOCH) {
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td->base.high += 1;
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}
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}
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static TypeInfo qemu_s390_tod_info = {
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.name = TYPE_QEMU_S390_TOD,
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.parent = TYPE_S390_TOD,
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.instance_size = sizeof(S390TODState),
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.instance_init = qemu_s390_tod_init,
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.class_init = qemu_s390_tod_class_init,
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.class_size = sizeof(S390TODClass),
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};
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static void register_types(void)
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{
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type_register_static(&qemu_s390_tod_info);
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}
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type_init(register_types);
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