1 /* SPDX-License-Identifier: GPL-2.0 */ 2 // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. 3 4 #ifndef __ASM_CSKY_PGTABLE_BITS_H 5 #define __ASM_CSKY_PGTABLE_BITS_H 6 7 /* implemented in software */ 8 #define _PAGE_ACCESSED (1<<3) 9 #define PAGE_ACCESSED_BIT (3) 10 11 #define _PAGE_READ (1<<1) 12 #define _PAGE_WRITE (1<<2) 13 #define _PAGE_PRESENT (1<<0) 14 15 #define _PAGE_MODIFIED (1<<4) 16 #define PAGE_MODIFIED_BIT (4) 17 18 /* implemented in hardware */ 19 #define _PAGE_GLOBAL (1<<6) 20 21 #define _PAGE_VALID (1<<7) 22 #define PAGE_VALID_BIT (7) 23 24 #define _PAGE_DIRTY (1<<8) 25 #define PAGE_DIRTY_BIT (8) 26 27 #define _PAGE_CACHE (3<<9) 28 #define _PAGE_UNCACHE (2<<9) 29 #define _PAGE_SO _PAGE_UNCACHE 30 31 #define _CACHE_MASK (7<<9) 32 33 #define _CACHE_CACHED (_PAGE_VALID | _PAGE_CACHE) 34 #define _CACHE_UNCACHED (_PAGE_VALID | _PAGE_UNCACHE) 35 36 #define HAVE_ARCH_UNMAPPED_AREA 37 38 #endif /* __ASM_CSKY_PGTABLE_BITS_H */ 39