1 files changed, 98 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/motorola_pgalloc.h b/arch/m68k/include/asm/motorola_pgalloc.h
new file mode 100644
index 000000000..b4fc3b4f6
--- /dev/null
+++ b/arch/m68k/include/asm/motorola_pgalloc.h
@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _MOTOROLA_PGALLOC_H
+#define _MOTOROLA_PGALLOC_H
+
+#include <asm/tlb.h>
+#include <asm/tlbflush.h>
+
+extern void mmu_page_ctor(void *page);
+extern void mmu_page_dtor(void *page);
+
+enum m68k_table_types {
+	TABLE_PGD = 0,
+	TABLE_PMD = 0, /* same size as PGD */
+	TABLE_PTE = 1,
+};
+
+extern void init_pointer_table(void *table, int type);
+extern void *get_pointer_table(int type);
+extern int free_pointer_table(void *table, int type);
+
+/*
+ * Allocate and free page tables. The xxx_kernel() versions are
+ * used to allocate a kernel page table - this turns on ASN bits
+ * if any.
+ */
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
+{
+	return get_pointer_table(TABLE_PTE);
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+	free_pointer_table(pte, TABLE_PTE);
+}
+
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
+{
+	return get_pointer_table(TABLE_PTE);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t pgtable)
+{
+	free_pointer_table(pgtable, TABLE_PTE);
+}
+
+static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pgtable,
+				  unsigned long address)
+{
+	free_pointer_table(pgtable, TABLE_PTE);
+}
+
+
+static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+	return get_pointer_table(TABLE_PMD);
+}
+
+static inline int pmd_free(struct mm_struct *mm, pmd_t *pmd)
+{
+	return free_pointer_table(pmd, TABLE_PMD);
+}
+
+static inline int __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
+				 unsigned long address)
+{
+	return free_pointer_table(pmd, TABLE_PMD);
+}
+
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+	free_pointer_table(pgd, TABLE_PGD);
+}
+
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+	return get_pointer_table(TABLE_PGD);
+}
+
+
+static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
+{
+	pmd_set(pmd, pte);
+}
+
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page)
+{
+	pmd_set(pmd, page);
+}
+#define pmd_pgtable(pmd) ((pgtable_t)pmd_page_vaddr(pmd))
+
+static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
+{
+	pud_set(pud, pmd);
+}
+
+#endif /* _MOTOROLA_PGALLOC_H */