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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_NOHASH_PGALLOC_H
#define _ASM_POWERPC_NOHASH_PGALLOC_H
#include <linux/mm.h>
#include <linux/slab.h>
extern void tlb_remove_table(struct mmu_gather *tlb, void *table);
#ifdef CONFIG_PPC64
extern void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address);
#else
/* 44x etc which is BOOKE not BOOK3E */
static inline void tlb_flush_pgtable(struct mmu_gather *tlb,
unsigned long address)
{
}
#endif /* !CONFIG_PPC_BOOK3E */
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);
}
#ifdef CONFIG_PPC64
#include <asm/nohash/64/pgalloc.h>
#else
#include <asm/nohash/32/pgalloc.h>
#endif
static inline void pgtable_free(void *table, int shift)
{
if (!shift) {
pte_fragment_free((unsigned long *)table, 0);
} else {
BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
kmem_cache_free(PGT_CACHE(shift), 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)
{
tlb_flush_pgtable(tlb, address);
pgtable_free_tlb(tlb, table, 0);
}
#endif /* _ASM_POWERPC_NOHASH_PGALLOC_H */
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