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b020632e MS |
1 | #ifndef __S390_VDSO_H__ |
2 | #define __S390_VDSO_H__ | |
3 | ||
b020632e MS |
4 | /* Default link addresses for the vDSOs */ |
5 | #define VDSO32_LBASE 0 | |
6 | #define VDSO64_LBASE 0 | |
7 | ||
13c6680a | 8 | #define VDSO_VERSION_STRING LINUX_2.6.29 |
b020632e MS |
9 | |
10 | #ifndef __ASSEMBLY__ | |
11 | ||
12 | /* | |
c742b31c | 13 | * Note about the vdso_data and vdso_per_cpu_data structures: |
b020632e | 14 | * |
c742b31c | 15 | * NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the |
b020632e MS |
16 | * structure is supposed to be known only to the function in the vdso |
17 | * itself and may change without notice. | |
18 | */ | |
19 | ||
20 | struct vdso_data { | |
21 | __u64 tb_update_count; /* Timebase atomicity ctr 0x00 */ | |
22 | __u64 xtime_tod_stamp; /* TOD clock for xtime 0x08 */ | |
23 | __u64 xtime_clock_sec; /* Kernel time 0x10 */ | |
24 | __u64 xtime_clock_nsec; /* 0x18 */ | |
b7eacb59 MS |
25 | __u64 xtime_coarse_sec; /* Coarse kernel time 0x20 */ |
26 | __u64 xtime_coarse_nsec; /* 0x28 */ | |
27 | __u64 wtom_clock_sec; /* Wall to monotonic clock 0x30 */ | |
28 | __u64 wtom_clock_nsec; /* 0x38 */ | |
29 | __u64 wtom_coarse_sec; /* Coarse wall to monotonic 0x40 */ | |
30 | __u64 wtom_coarse_nsec; /* 0x48 */ | |
31 | __u32 tz_minuteswest; /* Minutes west of Greenwich 0x50 */ | |
32 | __u32 tz_dsttime; /* Type of dst correction 0x54 */ | |
33 | __u32 ectg_available; /* ECTG instruction present 0x58 */ | |
34 | __u32 tk_mult; /* Mult. used for xtime_nsec 0x5c */ | |
35 | __u32 tk_shift; /* Shift used for xtime_nsec 0x60 */ | |
75c7b6f3 MS |
36 | __u32 ts_dir; /* TOD steering direction 0x64 */ |
37 | __u64 ts_end; /* TOD steering end 0x68 */ | |
c742b31c MS |
38 | }; |
39 | ||
40 | struct vdso_per_cpu_data { | |
41 | __u64 ectg_timer_base; | |
42 | __u64 ectg_user_time; | |
249c543b MS |
43 | __u32 cpu_nr; |
44 | __u32 node_id; | |
b020632e MS |
45 | }; |
46 | ||
47 | extern struct vdso_data *vdso_data; | |
48 | ||
c667aeac HC |
49 | int vdso_alloc_per_cpu(struct lowcore *lowcore); |
50 | void vdso_free_per_cpu(struct lowcore *lowcore); | |
c742b31c | 51 | |
b020632e | 52 | #endif /* __ASSEMBLY__ */ |
b020632e | 53 | #endif /* __S390_VDSO_H__ */ |