/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_VDSO_VSYSCALL_H #define __ASM_VDSO_VSYSCALL_H #define __VDSO_RND_DATA_OFFSET 480 #ifndef __ASSEMBLY__ #include <vdso/datapage.h> enum vvar_pages { VVAR_DATA_PAGE_OFFSET, VVAR_TIMENS_PAGE_OFFSET, VVAR_NR_PAGES, }; #define VDSO_PRECISION_MASK ~(0xFF00ULL<<48) extern struct vdso_data *vdso_data; /* * Update the vDSO data page to keep in sync with kernel timekeeping. */ static __always_inline struct vdso_data *__arm64_get_k_vdso_data(void) { return vdso_data; } #define __arch_get_k_vdso_data __arm64_get_k_vdso_data static __always_inline struct vdso_rng_data *__arm64_get_k_vdso_rnd_data(void) { return (void *)vdso_data + __VDSO_RND_DATA_OFFSET; } #define __arch_get_k_vdso_rng_data __arm64_get_k_vdso_rnd_data static __always_inline void __arm64_update_vsyscall(struct vdso_data *vdata) { vdata[CS_HRES_COARSE].mask = VDSO_PRECISION_MASK; vdata[CS_RAW].mask = VDSO_PRECISION_MASK; } #define __arch_update_vsyscall __arm64_update_vsyscall /* The asm-generic header needs to be included after the definitions above */ #include <asm-generic/vdso/vsyscall.h> #endif /* !__ASSEMBLY__ */ #endif /* __ASM_VDSO_VSYSCALL_H */