1 files changed, 102 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/sun3_pgalloc.h b/arch/m68k/include/asm/sun3_pgalloc.h
new file mode 100644
index 000000000..11485d38d
--- /dev/null
+++ b/arch/m68k/include/asm/sun3_pgalloc.h
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* sun3_pgalloc.h --
+ * reorganization around 2.3.39, routines moved from sun3_pgtable.h
+ *
+ *
+ * 02/27/2002 -- Modified to support "highpte" implementation in 2.5.5 (Sam)
+ *
+ * moved 1/26/2000 Sam Creasey
+ */
+
+#ifndef _SUN3_PGALLOC_H
+#define _SUN3_PGALLOC_H
+
+#include <asm/tlb.h>
+
+extern const char bad_pmd_string[];
+
+#define pmd_alloc_one(mm,address)       ({ BUG(); ((pmd_t *)2); })
+
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+        free_page((unsigned long) pte);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t page)
+{
+	pgtable_page_dtor(page);
+        __free_page(page);
+}
+
+#define __pte_free_tlb(tlb,pte,addr)			\
+do {							\
+	pgtable_page_dtor(pte);				\
+	tlb_remove_page((tlb), pte);			\
+} while (0)
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+					  unsigned long address)
+{
+	unsigned long page = __get_free_page(GFP_KERNEL);
+
+	if (!page)
+		return NULL;
+
+	memset((void *)page, 0, PAGE_SIZE);
+	return (pte_t *) (page);
+}
+
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
+					unsigned long address)
+{
+        struct page *page = alloc_pages(GFP_KERNEL, 0);
+
+	if (page == NULL)
+		return NULL;
+
+	clear_highpage(page);
+	if (!pgtable_page_ctor(page)) {
+		__free_page(page);
+		return NULL;
+	}
+	return page;
+
+}
+
+static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
+{
+	pmd_val(*pmd) = __pa((unsigned long)pte);
+}
+
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t page)
+{
+	pmd_val(*pmd) = __pa((unsigned long)page_address(page));
+}
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+/*
+ * allocating and freeing a pmd is trivial: the 1-entry pmd is
+ * inside the pgd, so has no extra memory associated with it.
+ */
+#define pmd_free(mm, x)			do { } while (0)
+#define __pmd_free_tlb(tlb, x, addr)	do { } while (0)
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+        free_page((unsigned long) pgd);
+}
+
+static inline pgd_t * pgd_alloc(struct mm_struct *mm)
+{
+     pgd_t *new_pgd;
+
+     new_pgd = (pgd_t *)get_zeroed_page(GFP_KERNEL);
+     memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE);
+     memset(new_pgd, 0, (PAGE_OFFSET >> PGDIR_SHIFT));
+     return new_pgd;
+}
+
+#define pgd_populate(mm, pmd, pte) BUG()
+
+#endif /* SUN3_PGALLOC_H */