1 files changed, 76 insertions, 0 deletions

diff --git a/arch/sh/include/asm/mmu.h b/arch/sh/include/asm/mmu.h
new file mode 100644
index 000000000000..fdcb93bc6d11
--- /dev/null
+++ b/arch/sh/include/asm/mmu.h
@@ -0,0 +1,76 @@
+#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 PMB_ADDR                0xf6100000
+#define PMB_DATA                0xf7100000
+#define PMB_ENTRY_MAX           16
+#define PMB_E_MASK              0x0000000f
+#define PMB_E_SHIFT             8
+
+#define PMB_SZ_16M              0x00000000
+#define PMB_SZ_64M              0x00000010
+#define PMB_SZ_128M             0x00000080
+#define PMB_SZ_512M             0x00000090
+#define PMB_SZ_MASK             PMB_SZ_512M
+#define PMB_C                   0x00000008
+#define PMB_WT                  0x00000001
+#define PMB_UB                  0x00000200
+#define PMB_V                   0x00000100
+
+#define PMB_NO_ENTRY            (-1)
+
+struct pmb_entry;
+
+struct pmb_entry {
+        unsigned long vpn;
+        unsigned long ppn;
+        unsigned long flags;
+
+        /*
+         * 0 .. NR_PMB_ENTRIES for specific entry selection, or
+         * PMB_NO_ENTRY to search for a free one
+         */
+        int entry;
+
+        struct pmb_entry *next;
+        /* Adjacent entry link for contiguous multi-entry mappings */
+        struct pmb_entry *link;
+};
+
+/* 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);
+
+#endif /* __MMU_H */
+