book3s/64/slice.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef _ASM_POWERPC_BOOK3S_64_SLICE_H
0003 #define _ASM_POWERPC_BOOK3S_64_SLICE_H
0004
0005 #ifndef __ASSEMBLY__
0006
0007 #ifdef CONFIG_PPC_64S_HASH_MMU
0008 #ifdef CONFIG_HUGETLB_PAGE
0009 #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
0010 #endif
0011 #define HAVE_ARCH_UNMAPPED_AREA
0012 #define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
0013 #endif
0014
0015 #define SLICE_LOW_SHIFT     28
0016 #define SLICE_LOW_TOP       (0x100000000ul)
0017 #define SLICE_NUM_LOW       (SLICE_LOW_TOP >> SLICE_LOW_SHIFT)
0018 #define GET_LOW_SLICE_INDEX(addr)   ((addr) >> SLICE_LOW_SHIFT)
0019
0020 #define SLICE_HIGH_SHIFT    40
0021 #define SLICE_NUM_HIGH      (H_PGTABLE_RANGE >> SLICE_HIGH_SHIFT)
0022 #define GET_HIGH_SLICE_INDEX(addr)  ((addr) >> SLICE_HIGH_SHIFT)
0023
0024 #define SLB_ADDR_LIMIT_DEFAULT  DEFAULT_MAP_WINDOW_USER64
0025
0026 struct mm_struct;
0027
0028 unsigned long slice_get_unmapped_area(unsigned long addr, unsigned long len,
0029                       unsigned long flags, unsigned int psize,
0030                       int topdown);
0031
0032 unsigned int get_slice_psize(struct mm_struct *mm, unsigned long addr);
0033
0034 void slice_set_range_psize(struct mm_struct *mm, unsigned long start,
0035                unsigned long len, unsigned int psize);
0036
0037 void slice_init_new_context_exec(struct mm_struct *mm);
0038 void slice_setup_new_exec(void);
0039
0040 #endif /* __ASSEMBLY__ */
0041
0042 #endif /* _ASM_POWERPC_BOOK3S_64_SLICE_H */