1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _SPARC_PGALLOC_H 3 #define _SPARC_PGALLOC_H 4 5 #include <linux/kernel.h> 6 #include <linux/sched.h> 7 8 #include <asm/pgtsrmmu.h> 9 #include <asm/pgtable.h> 10 #include <asm/vaddrs.h> 11 #include <asm/page.h> 12 13 struct page; 14 15 void *srmmu_get_nocache(int size, int align); 16 void srmmu_free_nocache(void *addr, int size); 17 18 extern struct resource sparc_iomap; 19 20 #define check_pgt_cache() do { } while (0) 21 22 pgd_t *get_pgd_fast(void); 23 static inline void free_pgd_fast(pgd_t *pgd) 24 { 25 srmmu_free_nocache(pgd, SRMMU_PGD_TABLE_SIZE); 26 } 27 28 #define pgd_free(mm, pgd) free_pgd_fast(pgd) 29 #define pgd_alloc(mm) get_pgd_fast() 30 31 static inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp) 32 { 33 unsigned long pa = __nocache_pa(pmdp); 34 35 set_pte((pte_t *)pgdp, __pte((SRMMU_ET_PTD | (pa >> 4)))); 36 } 37 38 #define pgd_populate(MM, PGD, PMD) pgd_set(PGD, PMD) 39 40 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, 41 unsigned long address) 42 { 43 return srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, 44 SRMMU_PMD_TABLE_SIZE); 45 } 46 47 static inline void free_pmd_fast(pmd_t * pmd) 48 { 49 srmmu_free_nocache(pmd, SRMMU_PMD_TABLE_SIZE); 50 } 51 52 #define pmd_free(mm, pmd) free_pmd_fast(pmd) 53 #define __pmd_free_tlb(tlb, pmd, addr) pmd_free((tlb)->mm, pmd) 54 55 void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep); 56 #define pmd_pgtable(pmd) pmd_page(pmd) 57 58 void pmd_set(pmd_t *pmdp, pte_t *ptep); 59 #define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE) 60 61 pgtable_t pte_alloc_one(struct mm_struct *mm); 62 63 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm) 64 { 65 return srmmu_get_nocache(PTE_SIZE, PTE_SIZE); 66 } 67 68 69 static inline void free_pte_fast(pte_t *pte) 70 { 71 srmmu_free_nocache(pte, PTE_SIZE); 72 } 73 74 #define pte_free_kernel(mm, pte) free_pte_fast(pte) 75 76 void pte_free(struct mm_struct * mm, pgtable_t pte); 77 #define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, pte) 78 79 #endif /* _SPARC_PGALLOC_H */ 80