1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef _ASM_POWERPC_PGTABLE_RADIX_64K_H 3*4882a593Smuzhiyun #define _ASM_POWERPC_PGTABLE_RADIX_64K_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun /* 6*4882a593Smuzhiyun * For 64K page size supported index is 13/9/9/5 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun #define RADIX_PTE_INDEX_SIZE 5 // size: 8B << 5 = 256B, maps 2^5 x 64K = 2MB 9*4882a593Smuzhiyun #define RADIX_PMD_INDEX_SIZE 9 // size: 8B << 9 = 4KB, maps 2^9 x 2MB = 1GB 10*4882a593Smuzhiyun #define RADIX_PUD_INDEX_SIZE 9 // size: 8B << 9 = 4KB, maps 2^9 x 1GB = 512GB 11*4882a593Smuzhiyun #define RADIX_PGD_INDEX_SIZE 13 // size: 8B << 13 = 64KB, maps 2^13 x 512GB = 4PB 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun /* 14*4882a593Smuzhiyun * We use a 256 byte PTE page fragment in radix 15*4882a593Smuzhiyun * 8 bytes per each PTE entry. 16*4882a593Smuzhiyun */ 17*4882a593Smuzhiyun #define RADIX_PTE_FRAG_SIZE_SHIFT (RADIX_PTE_INDEX_SIZE + 3) 18*4882a593Smuzhiyun #define RADIX_PTE_FRAG_NR (PAGE_SIZE >> RADIX_PTE_FRAG_SIZE_SHIFT) 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun #define RADIX_PMD_FRAG_SIZE_SHIFT (RADIX_PMD_INDEX_SIZE + 3) 21*4882a593Smuzhiyun #define RADIX_PMD_FRAG_NR (PAGE_SIZE >> RADIX_PMD_FRAG_SIZE_SHIFT) 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun #endif /* _ASM_POWERPC_PGTABLE_RADIX_64K_H */ 24