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- /* SPDX-License-Identifier: GPL-2.0 */
- #ifndef __S390_VDSO_H__
- #define __S390_VDSO_H__
- /* Default link addresses for the vDSOs */
- #define VDSO32_LBASE 0
- #define VDSO64_LBASE 0
- #define VDSO_VERSION_STRING LINUX_2.6.29
- #ifndef __ASSEMBLY__
- /*
- * Note about the vdso_data and vdso_per_cpu_data structures:
- *
- * NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the
- * structure is supposed to be known only to the function in the vdso
- * itself and may change without notice.
- */
- struct vdso_data {
- __u64 tb_update_count; /* Timebase atomicity ctr 0x00 */
- __u64 xtime_tod_stamp; /* TOD clock for xtime 0x08 */
- __u64 xtime_clock_sec; /* Kernel time 0x10 */
- __u64 xtime_clock_nsec; /* 0x18 */
- __u64 xtime_coarse_sec; /* Coarse kernel time 0x20 */
- __u64 xtime_coarse_nsec; /* 0x28 */
- __u64 wtom_clock_sec; /* Wall to monotonic clock 0x30 */
- __u64 wtom_clock_nsec; /* 0x38 */
- __u64 wtom_coarse_sec; /* Coarse wall to monotonic 0x40 */
- __u64 wtom_coarse_nsec; /* 0x48 */
- __u32 tz_minuteswest; /* Minutes west of Greenwich 0x50 */
- __u32 tz_dsttime; /* Type of dst correction 0x54 */
- __u32 ectg_available; /* ECTG instruction present 0x58 */
- __u32 tk_mult; /* Mult. used for xtime_nsec 0x5c */
- __u32 tk_shift; /* Shift used for xtime_nsec 0x60 */
- __u32 ts_dir; /* TOD steering direction 0x64 */
- __u64 ts_end; /* TOD steering end 0x68 */
- };
- struct vdso_per_cpu_data {
- __u64 ectg_timer_base;
- __u64 ectg_user_time;
- __u32 cpu_nr;
- __u32 node_id;
- };
- extern struct vdso_data *vdso_data;
- extern struct vdso_data boot_vdso_data;
- void vdso_alloc_boot_cpu(struct lowcore *lowcore);
- int vdso_alloc_per_cpu(struct lowcore *lowcore);
- void vdso_free_per_cpu(struct lowcore *lowcore);
- #endif /* __ASSEMBLY__ */
- #endif /* __S390_VDSO_H__ */
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