diff options
Diffstat (limited to 'sys/i386/xen/xen_clock_util.c')
| -rw-r--r-- | sys/i386/xen/xen_clock_util.c | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/sys/i386/xen/xen_clock_util.c b/sys/i386/xen/xen_clock_util.c deleted file mode 100644 index c124515..0000000 --- a/sys/i386/xen/xen_clock_util.c +++ /dev/null @@ -1,102 +0,0 @@ -/*- - * Copyright (c) 2009 Adrian Chadd - * 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, 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 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 AUTHOR 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. - * - * $FreeBSD$ - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/bus.h> -#include <sys/clock.h> -#include <sys/lock.h> -#include <sys/mutex.h> -#include <sys/kernel.h> -#include <sys/module.h> -#include <sys/time.h> - -#include <xen/xen-os.h> -#include <xen/xen_intr.h> - -#include <vm/vm.h> -#include <vm/pmap.h> -#include <machine/pmap.h> -#include <xen/hypervisor.h> -#include <machine/xen/xenfunc.h> -#include <xen/interface/io/xenbus.h> -#include <xen/interface/vcpu.h> -#include <machine/cpu.h> - -#include <machine/xen/xen_clock_util.h> - -/* - * Read the current hypervisor start time (wall clock) from Xen. - */ -void -xen_fetch_wallclock(struct timespec *ts) -{ - shared_info_t *s = HYPERVISOR_shared_info; - uint32_t ts_version; - - do { - ts_version = s->wc_version; - rmb(); - ts->tv_sec = s->wc_sec; - ts->tv_nsec = s->wc_nsec; - rmb(); - } - while ((s->wc_version & 1) | (ts_version ^ s->wc_version)); -} - -/* - * Read the current hypervisor system uptime value from Xen. - */ -void -xen_fetch_uptime(struct timespec *ts) -{ - shared_info_t *s = HYPERVISOR_shared_info; - struct vcpu_time_info *src; - struct shadow_time_info dst; - uint32_t pre_version, post_version; - - src = &s->vcpu_info[smp_processor_id()].time; - - spinlock_enter(); - do { - pre_version = dst.version = src->version; - rmb(); - dst.system_timestamp = src->system_time; - rmb(); - post_version = src->version; - } - while ((pre_version & 1) | (pre_version ^ post_version)); - - spinlock_exit(); - - ts->tv_sec = dst.system_timestamp / 1000000000; - ts->tv_nsec = dst.system_timestamp % 1000000000; -} |
