1 files changed, 69 insertions, 0 deletions

diff --git a/arch/mn10300/mm/cache-smp.h b/arch/mn10300/mm/cache-smp.h
new file mode 100644
index 000000000000..cb52892aa66a
--- /dev/null
+++ b/arch/mn10300/mm/cache-smp.h
@@ -0,0 +1,69 @@
+/* SMP caching definitions
+ *
+ * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+
+/*
+ * Operation requests for smp_cache_call().
+ *
+ * One of smp_icache_ops and one of smp_dcache_ops can be OR'd together.
+ */
+enum smp_icache_ops {
+        SMP_ICACHE_NOP                  = 0x0000,
+        SMP_ICACHE_INV                  = 0x0001,
+        SMP_ICACHE_INV_RANGE            = 0x0002,
+};
+#define SMP_ICACHE_OP_MASK              0x0003
+
+enum smp_dcache_ops {
+        SMP_DCACHE_NOP                  = 0x0000,
+        SMP_DCACHE_INV                  = 0x0004,
+        SMP_DCACHE_INV_RANGE            = 0x0008,
+        SMP_DCACHE_FLUSH                = 0x000c,
+        SMP_DCACHE_FLUSH_RANGE          = 0x0010,
+        SMP_DCACHE_FLUSH_INV            = 0x0014,
+        SMP_DCACHE_FLUSH_INV_RANGE      = 0x0018,
+};
+#define SMP_DCACHE_OP_MASK              0x001c
+
+#define SMP_IDCACHE_INV_FLUSH           (SMP_ICACHE_INV | SMP_DCACHE_FLUSH)
+#define SMP_IDCACHE_INV_FLUSH_RANGE     (SMP_ICACHE_INV_RANGE | SMP_DCACHE_FLUSH_RANGE)
+
+/*
+ * cache-smp.c
+ */
+#ifdef CONFIG_SMP
+extern spinlock_t smp_cache_lock;
+
+extern void smp_cache_call(unsigned long opr_mask,
+                           unsigned long addr, unsigned long end);
+
+static inline unsigned long smp_lock_cache(void)
+        __acquires(&smp_cache_lock)
+{
+        unsigned long flags;
+        spin_lock_irqsave(&smp_cache_lock, flags);
+        return flags;
+}
+
+static inline void smp_unlock_cache(unsigned long flags)
+        __releases(&smp_cache_lock)
+{
+        spin_unlock_irqrestore(&smp_cache_lock, flags);
+}
+
+#else
+static inline unsigned long smp_lock_cache(void) { return 0; }
+static inline void smp_unlock_cache(unsigned long flags) {}
+static inline void smp_cache_call(unsigned long opr_mask,
+                                  unsigned long addr, unsigned long end)
+{
+}
+#endif /* CONFIG_SMP */