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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_BOOK3S_32_PGALLOC_H
#define _ASM_POWERPC_BOOK3S_32_PGALLOC_H
#include <linux/threads.h>
#include <linux/slab.h>
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
return kmem_cache_alloc(PGT_CACHE(PGD_INDEX_SIZE),
pgtable_gfp_flags(mm, GFP_KERNEL));
}
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
kmem_cache_free(PGT_CACHE(PGD_INDEX_SIZE), pgd);
}
/*
* We don't have any real pmd's, and this code never triggers because
* the pgd will always be present..
*/
/* #define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); }) */
#define pmd_free(mm, x) do { } while (0)
#define __pmd_free_tlb(tlb,x,a) do { } while (0)
/* #define pgd_populate(mm, pmd, pte) BUG() */
static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp,
pte_t *pte)
{
*pmdp = __pmd(__pa(pte) | _PMD_PRESENT);
}
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmdp,
pgtable_t pte_page)
{
*pmdp = __pmd(__pa(pte_page) | _PMD_PRESENT);
}
static inline void pgtable_free(void *table, unsigned index_size)
{
if (!index_size) {
pte_fragment_free((unsigned long *)table, 0);
} else {
BUG_ON(index_size > MAX_PGTABLE_INDEX_SIZE);
kmem_cache_free(PGT_CACHE(index_size), table);
}
}
#define get_hugepd_cache_index(x) (x)
static inline void pgtable_free_tlb(struct mmu_gather *tlb,
void *table, int shift)
{
unsigned long pgf = (unsigned long)table;
BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
pgf |= shift;
tlb_remove_table(tlb, (void *)pgf);
}
static inline void __tlb_remove_table(void *_table)
{
void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
pgtable_free(table, shift);
}
static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
unsigned long address)
{
pgtable_free_tlb(tlb, table, 0);
}
#endif /* _ASM_POWERPC_BOOK3S_32_PGALLOC_H */