1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H 3*4882a593Smuzhiyun #define _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H 4*4882a593Smuzhiyun /* 5*4882a593Smuzhiyun * hash 4k can't share hugetlb and also doesn't support THP 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun #ifndef __ASSEMBLY__ 8*4882a593Smuzhiyun #ifdef CONFIG_HUGETLB_PAGE pmd_huge(pmd_t pmd)9*4882a593Smuzhiyunstatic inline int pmd_huge(pmd_t pmd) 10*4882a593Smuzhiyun { 11*4882a593Smuzhiyun /* 12*4882a593Smuzhiyun * leaf pte for huge page 13*4882a593Smuzhiyun */ 14*4882a593Smuzhiyun if (radix_enabled()) 15*4882a593Smuzhiyun return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE)); 16*4882a593Smuzhiyun return 0; 17*4882a593Smuzhiyun } 18*4882a593Smuzhiyun pud_huge(pud_t pud)19*4882a593Smuzhiyunstatic inline int pud_huge(pud_t pud) 20*4882a593Smuzhiyun { 21*4882a593Smuzhiyun /* 22*4882a593Smuzhiyun * leaf pte for huge page 23*4882a593Smuzhiyun */ 24*4882a593Smuzhiyun if (radix_enabled()) 25*4882a593Smuzhiyun return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE)); 26*4882a593Smuzhiyun return 0; 27*4882a593Smuzhiyun } 28*4882a593Smuzhiyun pgd_huge(pgd_t pgd)29*4882a593Smuzhiyunstatic inline int pgd_huge(pgd_t pgd) 30*4882a593Smuzhiyun { 31*4882a593Smuzhiyun /* 32*4882a593Smuzhiyun * leaf pte for huge page 33*4882a593Smuzhiyun */ 34*4882a593Smuzhiyun if (radix_enabled()) 35*4882a593Smuzhiyun return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE)); 36*4882a593Smuzhiyun return 0; 37*4882a593Smuzhiyun } 38*4882a593Smuzhiyun #define pgd_huge pgd_huge 39*4882a593Smuzhiyun /* 40*4882a593Smuzhiyun * With radix , we have hugepage ptes in the pud and pmd entries. We don't 41*4882a593Smuzhiyun * need to setup hugepage directory for them. Our pte and page directory format 42*4882a593Smuzhiyun * enable us to have this enabled. 43*4882a593Smuzhiyun */ hugepd_ok(hugepd_t hpd)44*4882a593Smuzhiyunstatic inline int hugepd_ok(hugepd_t hpd) 45*4882a593Smuzhiyun { 46*4882a593Smuzhiyun if (radix_enabled()) 47*4882a593Smuzhiyun return 0; 48*4882a593Smuzhiyun return hash__hugepd_ok(hpd); 49*4882a593Smuzhiyun } 50*4882a593Smuzhiyun #define is_hugepd(hpd) (hugepd_ok(hpd)) 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun /* 53*4882a593Smuzhiyun * 16M and 16G huge page directory tables are allocated from slab cache 54*4882a593Smuzhiyun * 55*4882a593Smuzhiyun */ 56*4882a593Smuzhiyun #define H_16M_CACHE_INDEX (PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE - 24) 57*4882a593Smuzhiyun #define H_16G_CACHE_INDEX \ 58*4882a593Smuzhiyun (PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE + H_PUD_INDEX_SIZE - 34) 59*4882a593Smuzhiyun get_hugepd_cache_index(int index)60*4882a593Smuzhiyunstatic inline int get_hugepd_cache_index(int index) 61*4882a593Smuzhiyun { 62*4882a593Smuzhiyun switch (index) { 63*4882a593Smuzhiyun case H_16M_CACHE_INDEX: 64*4882a593Smuzhiyun return HTLB_16M_INDEX; 65*4882a593Smuzhiyun case H_16G_CACHE_INDEX: 66*4882a593Smuzhiyun return HTLB_16G_INDEX; 67*4882a593Smuzhiyun default: 68*4882a593Smuzhiyun BUG(); 69*4882a593Smuzhiyun } 70*4882a593Smuzhiyun /* should not reach */ 71*4882a593Smuzhiyun } 72*4882a593Smuzhiyun 73*4882a593Smuzhiyun #endif /* CONFIG_HUGETLB_PAGE */ 74*4882a593Smuzhiyun 75*4882a593Smuzhiyun #endif /* __ASSEMBLY__ */ 76*4882a593Smuzhiyun 77*4882a593Smuzhiyun #endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H */ 78