1 files changed, 70 insertions, 0 deletions

diff --git a/include/asm-arm26/pgalloc.h b/include/asm-arm26/pgalloc.h
new file mode 100644
index 000000000000..6437167b1ffe
--- /dev/null
+++ b/include/asm-arm26/pgalloc.h
@@ -0,0 +1,70 @@
+/*
+ *  linux/include/asm-arm/pgalloc.h
+ *
+ *  Copyright (C) 2000-2001 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef _ASMARM_PGALLOC_H
+#define _ASMARM_PGALLOC_H
+
+#include <asm/processor.h>
+#include <asm/cacheflush.h>
+#include <asm/tlbflush.h>
+#include <linux/slab.h>
+
+extern kmem_cache_t *pte_cache;
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr){
+        return kmem_cache_alloc(pte_cache, GFP_KERNEL);
+}
+
+static inline void pte_free_kernel(pte_t *pte){
+        if (pte)
+                kmem_cache_free(pte_cache, pte);
+}
+
+/*
+ * Populate the pmdp entry with a pointer to the pte.  This pmd is part
+ * of the mm address space.
+ *
+ * If 'mm' is the init tasks mm, then we are doing a vmalloc, and we
+ * need to set stuff up correctly for it.
+ */
+static inline void
+pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)
+{
+//FIXME - is this doing the right thing?
+        set_pmd(pmdp, (unsigned long)ptep | 1/*FIXME _PMD_PRESENT*/);
+}
+
+/*
+ * FIXME - We use the old 2.5.5-rmk1 hack for this.
+ * This is not truly correct, but should be functional.
+ */
+#define pte_alloc_one(mm,addr)  ((struct page *)pte_alloc_one_kernel(mm,addr))
+#define pte_free(pte)           pte_free_kernel((pte_t *)pte)
+#define pmd_populate(mm,pmdp,ptep) pmd_populate_kernel(mm,pmdp,(pte_t *)ptep)
+
+/*
+ * Since we have only two-level page tables, these are trivial
+ * 
+ * trick __pmd_alloc into optimising away. The actual value is irrelevant though as it
+ * is thrown away. It just cant be zero. -IM
+ */
+
+#define pmd_alloc_one(mm,addr)          ({ BUG(); ((pmd_t *)2); })
+#define pmd_free(pmd)                   do { } while (0)
+#define pgd_populate(mm,pmd,pte)        BUG()
+
+extern pgd_t *get_pgd_slow(struct mm_struct *mm);
+extern void free_pgd_slow(pgd_t *pgd);
+
+#define pgd_alloc(mm)                   get_pgd_slow(mm)
+#define pgd_free(pgd)                   free_pgd_slow(pgd)
+
+#define check_pgt_cache()               do { } while (0)
+
+#endif