1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_BOOK3S_PGTABLE_H
3 #define _ASM_POWERPC_BOOK3S_PGTABLE_H
4 
5 #ifdef CONFIG_PPC64
6 #include <asm/book3s/64/pgtable.h>
7 #else
8 #include <asm/book3s/32/pgtable.h>
9 #endif
10 
11 #define FIRST_USER_ADDRESS	0UL
12 #ifndef __ASSEMBLY__
13 /* Insert a PTE, top-level function is out of line. It uses an inline
14  * low level function in the respective pgtable-* files
15  */
16 extern void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep,
17 		       pte_t pte);
18 
19 
20 #define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
21 extern int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address,
22 				 pte_t *ptep, pte_t entry, int dirty);
23 
24 struct file;
25 extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
26 				     unsigned long size, pgprot_t vma_prot);
27 #define __HAVE_PHYS_MEM_ACCESS_PROT
28 
29 /*
30  * This gets called at the end of handling a page fault, when
31  * the kernel has put a new PTE into the page table for the process.
32  * We use it to ensure coherency between the i-cache and d-cache
33  * for the page which has just been mapped in.
34  * On machines which use an MMU hash table, we use this to put a
35  * corresponding HPTE into the hash table ahead of time, instead of
36  * waiting for the inevitable extra hash-table miss exception.
37  */
38 void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep);
39 
40 #endif /* __ASSEMBLY__ */
41 #endif
42