162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef _ASM_POWERPC_PGTABLE_RADIX_64K_H 362306a36Sopenharmony_ci#define _ASM_POWERPC_PGTABLE_RADIX_64K_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci/* 662306a36Sopenharmony_ci * For 64K page size supported index is 13/9/9/5 762306a36Sopenharmony_ci */ 862306a36Sopenharmony_ci#define RADIX_PTE_INDEX_SIZE 5 // size: 8B << 5 = 256B, maps 2^5 x 64K = 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 * We use a 256 byte PTE page fragment in radix 1562306a36Sopenharmony_ci * 8 bytes per each PTE entry. 1662306a36Sopenharmony_ci */ 1762306a36Sopenharmony_ci#define RADIX_PTE_FRAG_SIZE_SHIFT (RADIX_PTE_INDEX_SIZE + 3) 1862306a36Sopenharmony_ci#define RADIX_PTE_FRAG_NR (PAGE_SIZE >> RADIX_PTE_FRAG_SIZE_SHIFT) 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ci#define RADIX_PMD_FRAG_SIZE_SHIFT (RADIX_PMD_INDEX_SIZE + 3) 2162306a36Sopenharmony_ci#define RADIX_PMD_FRAG_NR (PAGE_SIZE >> RADIX_PMD_FRAG_SIZE_SHIFT) 2262306a36Sopenharmony_ci 2362306a36Sopenharmony_ci#endif /* _ASM_POWERPC_PGTABLE_RADIX_64K_H */ 24