162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */
262306a36Sopenharmony_ci#ifndef _ASM_POWERPC_PGTABLE_RADIX_4K_H
362306a36Sopenharmony_ci#define _ASM_POWERPC_PGTABLE_RADIX_4K_H
462306a36Sopenharmony_ci
562306a36Sopenharmony_ci/*
662306a36Sopenharmony_ci * For 4K page size supported index is 13/9/9/9
762306a36Sopenharmony_ci */
862306a36Sopenharmony_ci#define RADIX_PTE_INDEX_SIZE   9  // size: 8B <<  9 =  4KB, maps 2^9  x    4K =   2MB
962306a36Sopenharmony_ci#define RADIX_PMD_INDEX_SIZE   9  // size: 8B <<  9 =  4KB, maps 2^9  x   2MB =   1GB
1062306a36Sopenharmony_ci#define RADIX_PUD_INDEX_SIZE   9  // size: 8B <<  9 =  4KB, maps 2^9  x   1GB = 512GB
1162306a36Sopenharmony_ci#define RADIX_PGD_INDEX_SIZE  13  // size: 8B << 13 = 64KB, maps 2^13 x 512GB =   4PB
1262306a36Sopenharmony_ci
1362306a36Sopenharmony_ci/*
1462306a36Sopenharmony_ci * One fragment per page
1562306a36Sopenharmony_ci */
1662306a36Sopenharmony_ci#define RADIX_PTE_FRAG_SIZE_SHIFT  (RADIX_PTE_INDEX_SIZE + 3)
1762306a36Sopenharmony_ci#define RADIX_PTE_FRAG_NR	(PAGE_SIZE >> RADIX_PTE_FRAG_SIZE_SHIFT)
1862306a36Sopenharmony_ci
1962306a36Sopenharmony_ci#define RADIX_PMD_FRAG_SIZE_SHIFT  (RADIX_PMD_INDEX_SIZE + 3)
2062306a36Sopenharmony_ci#define RADIX_PMD_FRAG_NR	(PAGE_SIZE >> RADIX_PMD_FRAG_SIZE_SHIFT)
2162306a36Sopenharmony_ci
2262306a36Sopenharmony_ci#endif /* _ASM_POWERPC_PGTABLE_RADIX_4K_H */
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