1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _SPARC64_PGALLOC_H 3#define _SPARC64_PGALLOC_H 4 5#include <linux/kernel.h> 6#include <linux/sched.h> 7#include <linux/mm.h> 8#include <linux/slab.h> 9 10#include <asm/spitfire.h> 11#include <asm/cpudata.h> 12#include <asm/cacheflush.h> 13#include <asm/page.h> 14 15/* Page table allocation/freeing. */ 16 17extern struct kmem_cache *pgtable_cache; 18 19static inline void __p4d_populate(p4d_t *p4d, pud_t *pud) 20{ 21 p4d_set(p4d, pud); 22} 23 24#define p4d_populate(MM, P4D, PUD) __p4d_populate(P4D, PUD) 25 26static inline pgd_t *pgd_alloc(struct mm_struct *mm) 27{ 28 return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); 29} 30 31static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) 32{ 33 kmem_cache_free(pgtable_cache, pgd); 34} 35 36static inline void __pud_populate(pud_t *pud, pmd_t *pmd) 37{ 38 pud_set(pud, pmd); 39} 40 41#define pud_populate(MM, PUD, PMD) __pud_populate(PUD, PMD) 42 43static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) 44{ 45 return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); 46} 47 48static inline void pud_free(struct mm_struct *mm, pud_t *pud) 49{ 50 kmem_cache_free(pgtable_cache, pud); 51} 52 53static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) 54{ 55 return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); 56} 57 58static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) 59{ 60 kmem_cache_free(pgtable_cache, pmd); 61} 62 63pte_t *pte_alloc_one_kernel(struct mm_struct *mm); 64pgtable_t pte_alloc_one(struct mm_struct *mm); 65void pte_free_kernel(struct mm_struct *mm, pte_t *pte); 66void pte_free(struct mm_struct *mm, pgtable_t ptepage); 67 68/* arch use pte_free_defer() implementation in arch/sparc/mm/init_64.c */ 69#define pte_free_defer pte_free_defer 70void pte_free_defer(struct mm_struct *mm, pgtable_t pgtable); 71 72#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(MM, PMD, PTE) 73#define pmd_populate(MM, PMD, PTE) pmd_set(MM, PMD, PTE) 74 75void pgtable_free(void *table, bool is_page); 76 77#ifdef CONFIG_SMP 78 79struct mmu_gather; 80void tlb_remove_table(struct mmu_gather *, void *); 81 82static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page) 83{ 84 unsigned long pgf = (unsigned long)table; 85 if (is_page) 86 pgf |= 0x1UL; 87 tlb_remove_table(tlb, (void *)pgf); 88} 89 90static inline void __tlb_remove_table(void *_table) 91{ 92 void *table = (void *)((unsigned long)_table & ~0x1UL); 93 bool is_page = false; 94 95 if ((unsigned long)_table & 0x1UL) 96 is_page = true; 97 pgtable_free(table, is_page); 98} 99#else /* CONFIG_SMP */ 100static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page) 101{ 102 pgtable_free(table, is_page); 103} 104#endif /* !CONFIG_SMP */ 105 106static inline void __pte_free_tlb(struct mmu_gather *tlb, pte_t *pte, 107 unsigned long address) 108{ 109 pgtable_free_tlb(tlb, pte, true); 110} 111 112#define __pmd_free_tlb(tlb, pmd, addr) \ 113 pgtable_free_tlb(tlb, pmd, false) 114 115#define __pud_free_tlb(tlb, pud, addr) \ 116 pgtable_free_tlb(tlb, pud, false) 117 118#endif /* _SPARC64_PGALLOC_H */ 119