1 files changed, 74 insertions, 44 deletions

diff --git a/arch/sh/include/asm/mmu.h b/arch/sh/include/asm/mmu.h
index fdcb93bc6d1..56e4418c19b 100644
--- a/arch/sh/include/asm/mmu.h
+++ b/arch/sh/include/asm/mmu.h
@@ -1,35 +1,24 @@
 #ifndef __MMU_H
 #define __MMU_H
 
-/* Default "unsigned long" context */
-typedef unsigned long mm_context_id_t[NR_CPUS];
-
-typedef struct {
-#ifdef CONFIG_MMU
-	mm_context_id_t		id;
-	void			*vdso;
-#else
-	struct vm_list_struct	*vmlist;
-	unsigned long		end_brk;
-#endif
-#ifdef CONFIG_BINFMT_ELF_FDPIC
-	unsigned long		exec_fdpic_loadmap;
-	unsigned long		interp_fdpic_loadmap;
-#endif
-} mm_context_t;
-
 /*
  * Privileged Space Mapping Buffer (PMB) definitions
  */
 #define PMB_PASCR		0xff000070
 #define PMB_IRMCR		0xff000078
 
+#define PASCR_SE		0x80000000
+
 #define PMB_ADDR		0xf6100000
 #define PMB_DATA		0xf7100000
-#define PMB_ENTRY_MAX		16
+
+#define NR_PMB_ENTRIES		16
+
 #define PMB_E_MASK		0x0000000f
 #define PMB_E_SHIFT		8
 
+#define PMB_PFN_MASK		0xff000000
+
 #define PMB_SZ_16M		0x00000000
 #define PMB_SZ_64M		0x00000010
 #define PMB_SZ_128M		0x00000080
@@ -38,39 +27,80 @@ typedef struct {
 #define PMB_C			0x00000008
 #define PMB_WT			0x00000001
 #define PMB_UB			0x00000200
+#define PMB_CACHE_MASK		(PMB_C | PMB_WT | PMB_UB)
 #define PMB_V			0x00000100
 
 #define PMB_NO_ENTRY		(-1)
 
-struct pmb_entry;
-
-struct pmb_entry {
-	unsigned long vpn;
-	unsigned long ppn;
-	unsigned long flags;
+#ifndef __ASSEMBLY__
+#include <linux/errno.h>
+#include <linux/threads.h>
+#include <asm/page.h>
 
-	/*
-	 * 0 .. NR_PMB_ENTRIES for specific entry selection, or
-	 * PMB_NO_ENTRY to search for a free one
-	 */
-	int entry;
+/* Default "unsigned long" context */
+typedef unsigned long mm_context_id_t[NR_CPUS];
 
-	struct pmb_entry *next;
-	/* Adjacent entry link for contiguous multi-entry mappings */
-	struct pmb_entry *link;
-};
+typedef struct {
+#ifdef CONFIG_MMU
+	mm_context_id_t		id;
+	void			*vdso;
+#else
+	unsigned long		end_brk;
+#endif
+#ifdef CONFIG_BINFMT_ELF_FDPIC
+	unsigned long		exec_fdpic_loadmap;
+	unsigned long		interp_fdpic_loadmap;
+#endif
+} mm_context_t;
 
+#ifdef CONFIG_PMB
 /* arch/sh/mm/pmb.c */
-int __set_pmb_entry(unsigned long vpn, unsigned long ppn,
-		    unsigned long flags, int *entry);
-int set_pmb_entry(struct pmb_entry *pmbe);
-void clear_pmb_entry(struct pmb_entry *pmbe);
-struct pmb_entry *pmb_alloc(unsigned long vpn, unsigned long ppn,
-			    unsigned long flags);
-void pmb_free(struct pmb_entry *pmbe);
-long pmb_remap(unsigned long virt, unsigned long phys,
-	       unsigned long size, unsigned long flags);
-void pmb_unmap(unsigned long addr);
+bool __in_29bit_mode(void);
 
-#endif /* __MMU_H */
+void pmb_init(void);
+int pmb_bolt_mapping(unsigned long virt, phys_addr_t phys,
+		     unsigned long size, pgprot_t prot);
+void __iomem *pmb_remap_caller(phys_addr_t phys, unsigned long size,
+			       pgprot_t prot, void *caller);
+int pmb_unmap(void __iomem *addr);
+
+#else
+
+static inline int
+pmb_bolt_mapping(unsigned long virt, phys_addr_t phys,
+		 unsigned long size, pgprot_t prot)
+{
+	return -EINVAL;
+}
+
+static inline void __iomem *
+pmb_remap_caller(phys_addr_t phys, unsigned long size,
+		 pgprot_t prot, void *caller)
+{
+	return NULL;
+}
+
+static inline int pmb_unmap(void __iomem *addr)
+{
+	return -EINVAL;
+}
+
+#define pmb_init(addr)		do { } while (0)
+
+#ifdef CONFIG_29BIT
+#define __in_29bit_mode()	(1)
+#else
+#define __in_29bit_mode()	(0)
+#endif
+
+#endif /* CONFIG_PMB */
 
+static inline void __iomem *
+pmb_remap(phys_addr_t phys, unsigned long size, pgprot_t prot)
+{
+	return pmb_remap_caller(phys, size, prot, __builtin_return_address(0));
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __MMU_H */