1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun #ifndef __ASM_CSKY_PGTABLE_BITS_H 5*4882a593Smuzhiyun #define __ASM_CSKY_PGTABLE_BITS_H 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun /* implemented in software */ 8*4882a593Smuzhiyun #define _PAGE_ACCESSED (1<<3) 9*4882a593Smuzhiyun #define PAGE_ACCESSED_BIT (3) 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun #define _PAGE_READ (1<<1) 12*4882a593Smuzhiyun #define _PAGE_WRITE (1<<2) 13*4882a593Smuzhiyun #define _PAGE_PRESENT (1<<0) 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #define _PAGE_MODIFIED (1<<4) 16*4882a593Smuzhiyun #define PAGE_MODIFIED_BIT (4) 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun /* implemented in hardware */ 19*4882a593Smuzhiyun #define _PAGE_GLOBAL (1<<6) 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun #define _PAGE_VALID (1<<7) 22*4882a593Smuzhiyun #define PAGE_VALID_BIT (7) 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun #define _PAGE_DIRTY (1<<8) 25*4882a593Smuzhiyun #define PAGE_DIRTY_BIT (8) 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun #define _PAGE_CACHE (3<<9) 28*4882a593Smuzhiyun #define _PAGE_UNCACHE (2<<9) 29*4882a593Smuzhiyun #define _PAGE_SO _PAGE_UNCACHE 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun #define _CACHE_MASK (7<<9) 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun #define _CACHE_CACHED (_PAGE_VALID | _PAGE_CACHE) 34*4882a593Smuzhiyun #define _CACHE_UNCACHED (_PAGE_VALID | _PAGE_UNCACHE) 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun #define HAVE_ARCH_UNMAPPED_AREA 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun #endif /* __ASM_CSKY_PGTABLE_BITS_H */ 39