1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 #ifndef _VDSO_DATAPAGE_H 3 #define _VDSO_DATAPAGE_H 4 #ifdef __KERNEL__ 5 6 /* 7 * Copyright (C) 2002 Peter Bergner <bergner@vnet.ibm.com>, IBM 8 * Copyright (C) 2005 Benjamin Herrenschmidy <benh@kernel.crashing.org>, 9 * IBM Corp. 10 */ 11 12 #ifndef __ASSEMBLY__ 13 14 #include <linux/unistd.h> 15 #include <linux/time.h> 16 #include <vdso/datapage.h> 17 18 #define SYSCALL_MAP_SIZE ((NR_syscalls + 31) / 32) 19 20 #ifdef CONFIG_PPC64 21 22 struct vdso_arch_data { 23 __u64 tb_ticks_per_sec; /* Timebase tics / sec */ 24 __u32 dcache_block_size; /* L1 d-cache block size */ 25 __u32 icache_block_size; /* L1 i-cache block size */ 26 __u32 dcache_log_block_size; /* L1 d-cache log block size */ 27 __u32 icache_log_block_size; /* L1 i-cache log block size */ 28 __u32 syscall_map[SYSCALL_MAP_SIZE]; /* Map of syscalls */ 29 __u32 compat_syscall_map[SYSCALL_MAP_SIZE]; /* Map of compat syscalls */ 30 31 struct vdso_rng_data rng_data; 32 33 struct vdso_data data[CS_BASES] __aligned(1 << CONFIG_PAGE_SHIFT); 34 }; 35 36 #else /* CONFIG_PPC64 */ 37 38 struct vdso_arch_data { 39 __u64 tb_ticks_per_sec; /* Timebase tics / sec */ 40 __u32 syscall_map[SYSCALL_MAP_SIZE]; /* Map of syscalls */ 41 __u32 compat_syscall_map[0]; /* No compat syscalls on PPC32 */ 42 struct vdso_rng_data rng_data; 43 44 struct vdso_data data[CS_BASES] __aligned(1 << CONFIG_PAGE_SHIFT); 45 }; 46 47 #endif /* CONFIG_PPC64 */ 48 49 extern struct vdso_arch_data *vdso_data; 50 51 #else /* __ASSEMBLY__ */ 52 53 .macro get_datapage ptr offset=0 54 bcl 20, 31, .+4 55 999: 56 mflr \ptr 57 addis \ptr, \ptr, (_vdso_datapage - 999b + \offset)@ha 58 addi \ptr, \ptr, (_vdso_datapage - 999b + \offset)@l 59 .endm 60 61 #include <asm/asm-offsets.h> 62 #include <asm/page.h> 63 64 #endif /* __ASSEMBLY__ */ 65 66 #endif /* __KERNEL__ */ 67 #endif /* _SYSTEMCFG_H */ 68