Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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
13struct page;
14
15void *srmmu_get_nocache(int size, int align);
16void srmmu_free_nocache(void *addr, int size);
17
18extern struct resource sparc_iomap;
19
20pgd_t *get_pgd_fast(void);
21static 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
29static 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
38static 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
45static 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
53void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep);
54#define pmd_pgtable(pmd) pmd_page(pmd)
55
56void pmd_set(pmd_t *pmdp, pte_t *ptep);
57#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE)
58
59pgtable_t pte_alloc_one(struct mm_struct *mm);
60
61static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
62{
63 return srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
64}
65
66
67static 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
74void 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 */