patch-2.4.22 linux-2.4.22/include/asm-sh64/tlb.h

• Lines: 96
• Date: 2003-08-25 04:44:44.000000000 -0700
• Orig file: linux-2.4.21/include/asm-sh64/tlb.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/include/asm-sh64/tlb.h linux-2.4.22/include/asm-sh64/tlb.h
@@ -0,0 +1,95 @@
+/*
+ * include/asm-sh64/tlb.h
+ *
+ * Copyright (C) 2003  Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ */ 
+#ifndef __ASM_SH64_TLB_H
+#define __ASM_SH64_TLB_H
+
+/*
+ * Note! These are mostly unused, we just need the xTLB_LAST_VAR_UNRESTRICTED
+ * for head.S! Once this limitation is gone, we can clean the rest of this up.
+ */
+
+/* ITLB defines */
+#define ITLB_FIXED	0x00000000	/* First fixed ITLB, see head.S */
+#define ITLB_LAST_VAR_UNRESTRICTED	0x000003F0	/* Last ITLB */
+
+/* DTLB defines */
+#define DTLB_FIXED	0x00800000	/* First fixed DTLB, see head.S */
+#define DTLB_LAST_VAR_UNRESTRICTED	0x008003F0	/* Last DTLB */
+
+#ifndef __ASSEMBLY__
+
+#include <asm-generic/tlb.h>
+
+/*
+ * TLB information structure
+ *
+ * Defined for both I and D tlb, per-processor.
+ */
+struct tlb_info {
+	unsigned long long next;
+	unsigned long long first;
+	unsigned long long last;
+
+	unsigned int entries;
+	unsigned int step;
+
+	unsigned long flags;
+};
+
+/**
+ * for_each_dtlb_entry
+ *
+ * @tlb:	TLB entry
+ *
+ * Iterate over free (non-wired) DTLB entries
+ */
+#define for_each_dtlb_entry(tlb)		\
+	for (tlb  = cpu_data->dtlb.first;	\
+	     tlb <= cpu_data->dtlb.last;	\
+	     tlb += cpu_data->dtlb.step)
+
+/**
+ * for_each_itlb_entry
+ *
+ * @tlb:	TLB entry
+ *
+ * Iterate over free (non-wired) ITLB entries
+ */
+#define for_each_itlb_entry(tlb)		\
+	for (tlb  = cpu_data->itlb.first;	\
+	     tlb <= cpu_data->itlb.last;	\
+	     tlb += cpu_data->itlb.step)
+
+/**
+ * __flush_tlb_slot
+ *
+ * @slot:	Address of TLB slot.
+ *
+ * Flushes TLB slot @slot.
+ */
+static inline void __flush_tlb_slot(unsigned long long slot)
+{
+	__asm__ __volatile__ ("putcfg %0, 0, r63\n" : : "r" (slot));
+}
+
+/* arch/sh64/mm/tlb.c */
+extern int sh64_tlb_init(void);
+extern unsigned long long sh64_next_free_dtlb_entry(void);
+extern unsigned long long sh64_get_wired_dtlb_entry(void);
+extern int sh64_put_wired_dtlb_entry(unsigned long long entry);
+
+extern void sh64_setup_tlb_slot(unsigned long long config_addr, unsigned long eaddr, unsigned long asid, unsigned long paddr);
+extern void sh64_teardown_tlb_slot(unsigned long long config_addr);
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __ASM_SH64_TLB_H */
+