1 files changed, 52 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..ff48573db
--- /dev/null
+++ b/arch/m68k/include/asm/sun3_pgalloc.h
@@ -0,0 +1,52 @@
+/* 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>
+
+#include <asm-generic/pgalloc.h>
+
+extern const char bad_pmd_string[];
+
+#define __pte_free_tlb(tlb, pte, addr)				\
+do {								\
+	pagetable_pte_dtor(page_ptdesc(pte));			\
+	tlb_remove_page_ptdesc((tlb), page_ptdesc(pte));	\
+} while (0)
+
+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));
+}
+
+/*
+ * 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)
+
+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;
+}
+
+#endif /* SUN3_PGALLOC_H */