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- /* SPDX-License-Identifier: GPL-2.0 */
- #ifndef __ASM_CSKY_PGTABLE_BITS_H
- #define __ASM_CSKY_PGTABLE_BITS_H
- /* implemented in software */
- #define _PAGE_ACCESSED (1<<7)
- #define _PAGE_READ (1<<8)
- #define _PAGE_WRITE (1<<9)
- #define _PAGE_PRESENT (1<<10)
- #define _PAGE_MODIFIED (1<<11)
- /* implemented in hardware */
- #define _PAGE_GLOBAL (1<<0)
- #define _PAGE_VALID (1<<1)
- #define _PAGE_DIRTY (1<<2)
- #define _PAGE_SO (1<<5)
- #define _PAGE_BUF (1<<6)
- #define _PAGE_CACHE (1<<3)
- #define _CACHE_MASK _PAGE_CACHE
- #define _CACHE_CACHED (_PAGE_CACHE | _PAGE_BUF)
- #define _CACHE_UNCACHED (0)
- #define _PAGE_PROT_NONE _PAGE_WRITE
- /*
- * Encode and decode a swap entry
- *
- * Format of swap PTE:
- * bit 0: _PAGE_GLOBAL (zero)
- * bit 1: _PAGE_VALID (zero)
- * bit 2 - 6: swap type
- * bit 7 - 8: swap offset[0 - 1]
- * bit 9: _PAGE_WRITE (zero)
- * bit 10: _PAGE_PRESENT (zero)
- * bit 11 - 31: swap offset[2 - 22]
- */
- #define __swp_type(x) (((x).val >> 2) & 0x1f)
- #define __swp_offset(x) ((((x).val >> 7) & 0x3) | \
- (((x).val >> 9) & 0x7ffffc))
- #define __swp_entry(type, offset) ((swp_entry_t) { \
- ((type & 0x1f) << 2) | \
- ((offset & 0x3) << 7) | \
- ((offset & 0x7ffffc) << 9)})
- #endif /* __ASM_CSKY_PGTABLE_BITS_H */
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