1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (C) 2005-2017 Andes Technology Corporation
4  */
5 
6 #ifndef _ASMNDS32_PAGE_H
7 #define _ASMNDS32_PAGE_H
8 
9 #ifdef CONFIG_ANDES_PAGE_SIZE_4KB
10 #define PAGE_SHIFT      12
11 #endif
12 #ifdef CONFIG_ANDES_PAGE_SIZE_8KB
13 #define PAGE_SHIFT      13
14 #endif
15 #include <linux/const.h>
16 #define PAGE_SIZE       (_AC(1,UL) << PAGE_SHIFT)
17 #define PAGE_MASK       (~(PAGE_SIZE-1))
18 
19 #ifdef __KERNEL__
20 
21 #ifndef __ASSEMBLY__
22 
23 struct page;
24 struct vm_area_struct;
25 #ifdef CONFIG_CPU_CACHE_ALIASING
26 extern void copy_user_highpage(struct page *to, struct page *from,
27 			       unsigned long vaddr, struct vm_area_struct *vma);
28 extern void clear_user_highpage(struct page *page, unsigned long vaddr);
29 
30 void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
31 		    struct page *to);
32 void clear_user_page(void *addr, unsigned long vaddr, struct page *page);
33 #define __HAVE_ARCH_COPY_USER_HIGHPAGE
34 #define clear_user_highpage	clear_user_highpage
35 #else
36 #define clear_user_page(page, vaddr, pg)        clear_page(page)
37 #define copy_user_page(to, from, vaddr, pg)     copy_page(to, from)
38 #endif
39 
40 void clear_page(void *page);
41 void copy_page(void *to, void *from);
42 
43 typedef unsigned long pte_t;
44 typedef unsigned long pgd_t;
45 typedef unsigned long pgprot_t;
46 
47 #define pte_val(x)      (x)
48 #define pgd_val(x)	(x)
49 #define pgprot_val(x)   (x)
50 
51 #define __pte(x)        (x)
52 #define __pgd(x)        (x)
53 #define __pgprot(x)     (x)
54 
55 typedef struct page *pgtable_t;
56 
57 #include <asm/memory.h>
58 #include <asm-generic/getorder.h>
59 
60 #endif /* !__ASSEMBLY__ */
61 
62 #endif /* __KERNEL__ */
63 
64 #endif
65