xref: /linux/arch/powerpc/include/asm/book3s/64/radix-64k.h (revision 6b16f5d12202a23d875915349cc031c07fe1b3ec)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_POWERPC_PGTABLE_RADIX_64K_H
3 #define _ASM_POWERPC_PGTABLE_RADIX_64K_H
4 
5 /*
6  * For 64K page size supported index is 13/9/9/5
7  */
8 #define RADIX_PTE_INDEX_SIZE  5  /* 2MB huge page */
9 #define RADIX_PMD_INDEX_SIZE  9  /* 1G huge page */
10 #define RADIX_PUD_INDEX_SIZE	 9
11 #define RADIX_PGD_INDEX_SIZE  13
12 
13 /*
14  * We use a 256 byte PTE page fragment in radix
15  * 8 bytes per each PTE entry.
16  */
17 #define RADIX_PTE_FRAG_SIZE_SHIFT  (RADIX_PTE_INDEX_SIZE + 3)
18 #define RADIX_PTE_FRAG_NR	(PAGE_SIZE >> RADIX_PTE_FRAG_SIZE_SHIFT)
19 
20 #define RADIX_PMD_FRAG_SIZE_SHIFT  (RADIX_PMD_INDEX_SIZE + 3)
21 #define RADIX_PMD_FRAG_NR	(PAGE_SIZE >> RADIX_PMD_FRAG_SIZE_SHIFT)
22 
23 #endif /* _ASM_POWERPC_PGTABLE_RADIX_64K_H */
24