X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-sh%2Fmmu.h;h=eb0358c097d01a3c236b83400e03aa2ac5b757b7;hb=252815b0cfe711001eff0327872209986b36d490;hp=72f07be6117fa23bbaaeb91d9c8e8a882fbaa57e;hpb=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2;p=linux-2.6

diff --git a/include/asm-sh/mmu.h b/include/asm-sh/mmu.h
index 72f07be611..eb0358c097 100644
--- a/include/asm-sh/mmu.h
+++ b/include/asm-sh/mmu.h
@@ -1,29 +1,72 @@
 #ifndef __MMU_H
 #define __MMU_H
 
-#if !defined(CONFIG_MMU)
-
-struct mm_rblock_struct {
-	int	size;
-	int	refcount;
-	void	*kblock;
-};
-
-struct mm_tblock_struct {
-	struct mm_rblock_struct *rblock;
-	struct mm_tblock_struct *next;
-};
+/* Default "unsigned long" context */
+typedef unsigned long mm_context_id_t[NR_CPUS];
 
 typedef struct {
-	struct mm_tblock_struct tblock;
+#ifdef CONFIG_MMU
+	mm_context_id_t		id;
+	void			*vdso;
+#else
+	struct vm_list_struct	*vmlist;
 	unsigned long		end_brk;
+#endif
 } mm_context_t;
 
-#else
+/*
+ * Privileged Space Mapping Buffer (PMB) definitions
+ */
+#define PMB_PASCR		0xff000070
+#define PMB_IRMCR		0xff000078
 
-/* Default "unsigned long" context */
-typedef unsigned long mm_context_t;
+#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 /* CONFIG_MMU */
-#endif /* __MMH_H */
+#endif /* __MMU_H */