| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 | 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 pgd_set(pgd_t * pgdp, pmd_t * pmdp) |
| 30 | { |
| 31 | unsigned long pa = __nocache_pa(pmdp); |
| 32 | |
| 33 | set_pte((pte_t *)pgdp, __pte((SRMMU_ET_PTD | (pa >> 4)))); |
| 34 | } |
| 35 | |
| 36 | #define pgd_populate(MM, PGD, PMD) pgd_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 | #define __pmd_free_tlb(tlb, pmd, addr) pmd_free((tlb)->mm, pmd) |
| 52 | |
| 53 | void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep); |
| 54 | #define pmd_pgtable(pmd) pmd_page(pmd) |
| 55 | |
| 56 | void pmd_set(pmd_t *pmdp, pte_t *ptep); |
| 57 | #define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE) |
| 58 | |
| 59 | pgtable_t pte_alloc_one(struct mm_struct *mm); |
| 60 | |
| 61 | static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm) |
| 62 | { |
| 63 | return srmmu_get_nocache(PTE_SIZE, PTE_SIZE); |
| 64 | } |
| 65 | |
| 66 | |
| 67 | static inline void free_pte_fast(pte_t *pte) |
| 68 | { |
| 69 | srmmu_free_nocache(pte, PTE_SIZE); |
| 70 | } |
| 71 | |
| 72 | #define pte_free_kernel(mm, pte) free_pte_fast(pte) |
| 73 | |
| 74 | void pte_free(struct mm_struct * mm, pgtable_t pte); |
| 75 | #define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, pte) |
| 76 | |
| 77 | #endif /* _SPARC_PGALLOC_H */ |