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/*
* Adapted from arm64 version.
*
* Copyright (C) 2012 ARM Limited
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ASM_VDSO_DATAPAGE_H
#define __ASM_VDSO_DATAPAGE_H
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
#include <asm/page.h>
#ifndef _VDSO_WTM_CLOCK_SEC_T
#define _VDSO_WTM_CLOCK_SEC_T
typedef u32 vdso_wtm_clock_nsec_t;
#endif
#ifndef _VDSO_XTIME_CLOCK_SEC_T
#define _VDSO_XTIME_CLOCK_SEC_T
typedef u32 vdso_xtime_clock_sec_t;
#endif
#ifndef _VDSO_RAW_TIME_SEC_T
#define _VDSO_RAW_TIME_SEC_T
typedef u32 vdso_raw_time_sec_t;
#endif
/* Try to be cache-friendly on systems that don't implement the
* generic timer: fit the unconditionally updated fields in the first
* 32 bytes.
*/
struct vdso_data {
u32 tb_seq_count; /* sequence count - odd during updates */
u16 use_syscall; /* fall back to syscall if true */
u16 cs_shift; /* clocksource shift */
u32 xtime_coarse_sec; /* coarse time */
u32 xtime_coarse_nsec;
/* wall to monotonic offset */
u32 wtm_clock_sec;
vdso_wtm_clock_nsec_t wtm_clock_nsec;
/* CLOCK_REALTIME - seconds */
vdso_xtime_clock_sec_t xtime_clock_sec;
u32 cs_mono_mult; /* clocksource multiplier */
u64 cs_cycle_last; /* last cycle value */
u64 cs_mask; /* clocksource mask */
u64 xtime_clock_snsec; /* CLOCK_REALTIME sub-ns base */
u32 tz_minuteswest; /* timezone info for gettimeofday(2) */
u32 tz_dsttime;
u32 btm_sec; /* monotonic to boot time */
u32 btm_nsec;
/* Raw clocksource multipler */
u32 cs_raw_mult;
/* Raw time */
vdso_raw_time_sec_t raw_time_sec;
u32 raw_time_nsec;
};
union vdso_data_store {
struct vdso_data data;
u8 page[PAGE_SIZE];
};
#endif /* !__ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* __ASM_VDSO_DATAPAGE_H */
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