summaryrefslogtreecommitdiff
path: root/include/asm-powerpc/pgtable.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-powerpc/pgtable.h')
-rw-r--r--include/asm-powerpc/pgtable.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/include/asm-powerpc/pgtable.h b/include/asm-powerpc/pgtable.h
index 78bf4ae712a6..d18ffe7bc7c4 100644
--- a/include/asm-powerpc/pgtable.h
+++ b/include/asm-powerpc/pgtable.h
@@ -2,6 +2,13 @@
#define _ASM_POWERPC_PGTABLE_H
#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
+#include <asm/processor.h> /* For TASK_SIZE */
+#include <asm/mmu.h>
+#include <asm/page.h>
+struct mm_struct;
+#endif /* !__ASSEMBLY__ */
+
#if defined(CONFIG_PPC64)
# include <asm/pgtable-ppc64.h>
#else
@@ -9,6 +16,27 @@
#endif
#ifndef __ASSEMBLY__
+/*
+ * ZERO_PAGE is a global shared page that is always zero: used
+ * for zero-mapped memory areas etc..
+ */
+extern unsigned long empty_zero_page[];
+#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
+
+extern pgd_t swapper_pg_dir[];
+
+extern void paging_init(void);
+
+/*
+ * kern_addr_valid is intended to indicate whether an address is a valid
+ * kernel address. Most 32-bit archs define it as always true (like this)
+ * but most 64-bit archs actually perform a test. What should we do here?
+ */
+#define kern_addr_valid(addr) (1)
+
+#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \
+ remap_pfn_range(vma, vaddr, pfn, size, prot)
+
#include <asm-generic/pgtable.h>
#endif /* __ASSEMBLY__ */