Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _ASM_X86_64_VSYSCALL_H_ |
| 2 | #define _ASM_X86_64_VSYSCALL_H_ |
| 3 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | enum vsyscall_num { |
| 5 | __NR_vgettimeofday, |
| 6 | __NR_vtime, |
| 7 | }; |
| 8 | |
| 9 | #define VSYSCALL_START (-10UL << 20) |
| 10 | #define VSYSCALL_SIZE 1024 |
| 11 | #define VSYSCALL_END (-2UL << 20) |
| 12 | #define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr)) |
| 13 | |
| 14 | #ifdef __KERNEL__ |
David Woodhouse | 75da736 | 2006-09-16 12:15:48 -0700 | [diff] [blame] | 15 | #include <linux/seqlock.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | |
| 17 | #define __section_vxtime __attribute__ ((unused, __section__ (".vxtime"), aligned(16))) |
| 18 | #define __section_wall_jiffies __attribute__ ((unused, __section__ (".wall_jiffies"), aligned(16))) |
| 19 | #define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16))) |
| 20 | #define __section_sys_tz __attribute__ ((unused, __section__ (".sys_tz"), aligned(16))) |
| 21 | #define __section_sysctl_vsyscall __attribute__ ((unused, __section__ (".sysctl_vsyscall"), aligned(16))) |
| 22 | #define __section_xtime __attribute__ ((unused, __section__ (".xtime"), aligned(16))) |
| 23 | #define __section_xtime_lock __attribute__ ((unused, __section__ (".xtime_lock"), aligned(16))) |
| 24 | |
| 25 | #define VXTIME_TSC 1 |
| 26 | #define VXTIME_HPET 2 |
Andi Kleen | 312df5f | 2005-05-16 21:53:28 -0700 | [diff] [blame] | 27 | #define VXTIME_PMTMR 3 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | |
| 29 | struct vxtime_data { |
| 30 | long hpet_address; /* HPET base address */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | int last; |
| 32 | unsigned long last_tsc; |
| 33 | long quot; |
| 34 | long tsc_quot; |
| 35 | int mode; |
| 36 | }; |
| 37 | |
Stephen Hemminger | 77a7533 | 2006-01-11 22:46:30 +0100 | [diff] [blame] | 38 | #define hpet_readl(a) readl((const void __iomem *)fix_to_virt(FIX_HPET_BASE) + a) |
| 39 | #define hpet_writel(d,a) writel(d, (void __iomem *)fix_to_virt(FIX_HPET_BASE) + a) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
| 41 | /* vsyscall space (readonly) */ |
| 42 | extern struct vxtime_data __vxtime; |
| 43 | extern struct timespec __xtime; |
| 44 | extern volatile unsigned long __jiffies; |
| 45 | extern unsigned long __wall_jiffies; |
| 46 | extern struct timezone __sys_tz; |
| 47 | extern seqlock_t __xtime_lock; |
| 48 | |
| 49 | /* kernel space (writeable) */ |
| 50 | extern struct vxtime_data vxtime; |
| 51 | extern unsigned long wall_jiffies; |
| 52 | extern struct timezone sys_tz; |
| 53 | extern int sysctl_vsyscall; |
| 54 | extern seqlock_t xtime_lock; |
| 55 | |
Andi Kleen | 312df5f | 2005-05-16 21:53:28 -0700 | [diff] [blame] | 56 | extern int sysctl_vsyscall; |
| 57 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | #define ARCH_HAVE_XTIME_LOCK 1 |
| 59 | |
| 60 | #endif /* __KERNEL__ */ |
| 61 | |
| 62 | #endif /* _ASM_X86_64_VSYSCALL_H_ */ |