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 #include <linux/pgtable.h> 8 9 #include <asm/pgtsrmmu.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 pgd_t *get_pgd_fast(void); 21 static inline void free_pgd_fast(pgd_t *pgd) 22 { 23 srmmu_free_nocache(pgd, SRMMU_PGD_TABLE_SIZE); 24 } 25 26 #define pgd_free(mm, pgd) free_pgd_fast(pgd) 27 #define pgd_alloc(mm) get_pgd_fast() 28 29 static inline void pud_set(pud_t * pudp, pmd_t * pmdp) 30 { 31 unsigned long pa = __nocache_pa(pmdp); 32 33 set_pte((pte_t *)pudp, __pte((SRMMU_ET_PTD | (pa >> 4)))); 34 } 35 36 #define pud_populate(MM, PGD, PMD) pud_set(PGD, PMD) 37 38 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, 39 unsigned long address) 40 { 41 return srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, 42 SRMMU_PMD_TABLE_SIZE); 43 } 44 45 static inline void free_pmd_fast(pmd_t * pmd) 46 { 47 srmmu_free_nocache(pmd, SRMMU_PMD_TABLE_SIZE); 48 } 49 50 #define pmd_free(mm, pmd) free_pmd_fast(pmd) 51 52 #define __pmd_free_tlb(tlb, pmd, addr) \ 53 tlb_remove_table((tlb), (void *)((unsigned long)(pmd) | 1UL)) 54 55 #define pmd_populate(mm, pmd, pte) pmd_set(pmd, pte) 56 57 void pmd_set(pmd_t *pmdp, pte_t *ptep); 58 #define pmd_populate_kernel pmd_populate 59 60 pgtable_t pte_alloc_one(struct mm_struct *mm); 61 62 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm) 63 { 64 return srmmu_get_nocache(SRMMU_PTE_TABLE_SIZE, 65 SRMMU_PTE_TABLE_SIZE); 66 } 67 68 69 static inline void free_pte_fast(pte_t *pte) 70 { 71 srmmu_free_nocache(pte, SRMMU_PTE_TABLE_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 void __tlb_remove_table(void *table); 78 #define __pte_free_tlb(tlb, pte, addr) tlb_remove_table((tlb), (void *)(pte)) 79 80 #endif /* _SPARC_PGALLOC_H */ 81