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+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ Copyright (c) 2005 Eliot Dresselhaus
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef included_clib_cache_h
+#define included_clib_cache_h
+
+#include <vppinfra/error_bootstrap.h>
+
+/*
+ * Allow CFLAGS to override the arch-specific cache line size
+ */
+#ifndef CLIB_LOG2_CACHE_LINE_BYTES
+
+#if defined(__x86_64__) || defined(__ARM_ARCH_7A__)
+#define CLIB_LOG2_CACHE_LINE_BYTES 6
+#endif
+
+#ifdef __aarch64__
+#define CLIB_LOG2_CACHE_LINE_BYTES 7
+#endif
+
+/* Default cache line size of 32 bytes. */
+#ifndef CLIB_LOG2_CACHE_LINE_BYTES
+#define CLIB_LOG2_CACHE_LINE_BYTES 5
+#endif
+
+#endif /* CLIB_LOG2_CACHE_LINE_BYTES defined */
+
+#if (CLIB_LOG2_CACHE_LINE_BYTES >= 9)
+#error Cache line size 512 bytes or greater
+#endif
+
+#define CLIB_CACHE_LINE_BYTES (1 << CLIB_LOG2_CACHE_LINE_BYTES)
+#define CLIB_CACHE_LINE_ALIGN_MARK(mark) u8 mark[0] __attribute__((aligned(CLIB_CACHE_LINE_BYTES)))
+
+/* Read/write arguments to __builtin_prefetch. */
+#define CLIB_PREFETCH_READ 0
+#define CLIB_PREFETCH_LOAD 0 /* alias for read */
+#define CLIB_PREFETCH_WRITE 1
+#define CLIB_PREFETCH_STORE 1 /* alias for write */
+
+#define _CLIB_PREFETCH(n,size,type) \
+ if ((size) > (n)*CLIB_CACHE_LINE_BYTES) \
+ __builtin_prefetch (_addr + (n)*CLIB_CACHE_LINE_BYTES, \
+ CLIB_PREFETCH_##type, \
+ /* locality */ 3);
+
+#define CLIB_PREFETCH(addr,size,type) \
+do { \
+ void * _addr = (addr); \
+ \
+ ASSERT ((size) <= 4*CLIB_CACHE_LINE_BYTES); \
+ _CLIB_PREFETCH (0, size, type); \
+ _CLIB_PREFETCH (1, size, type); \
+ _CLIB_PREFETCH (2, size, type); \
+ _CLIB_PREFETCH (3, size, type); \
+} while (0)
+
+#undef _
+
+#endif /* included_clib_cache_h */
+
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */