Standard Libraries for EDK II.

[mirror_edk2.git] / StdLib / Include / Ipf / machine / cpu_counter.h

diff --git a/StdLib/Include/Ipf/machine/cpu_counter.h b/StdLib/Include/Ipf/machine/cpu_counter.h
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+/*     $NetBSD: cpu_counter.h,v 1.1 2006/09/20 13:33:04 kochi Exp $    */\r
+\r
+/*-\r
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.\r
+ * All rights reserved.\r
+ *\r
+ * This code is derived from software contributed to The NetBSD Foundation\r
+ * by Takayoshi Kochi.\r
+ *\r
+ * Redistribution and use in source and binary forms, with or without\r
+ * modification, are permitted provided that the following conditions\r
+ * are met:\r
+ * 1. Redistributions of source code must retain the above copyright\r
+ *    notice, this list of conditions and the following disclaimer.\r
+ * 2. Redistributions in binary form must reproduce the above copyright\r
+ *    notice, this list of conditions and the following disclaimer in the\r
+ *    documentation and/or other materials provided with the distribution.\r
+ * 3. All advertising materials mentioning features or use of this software\r
+ *    must display the following acknowledgement:\r
+ *        This product includes software developed by the NetBSD\r
+ *        Foundation, Inc. and its contributors.\r
+ * 4. Neither the name of The NetBSD Foundation nor the names of its\r
+ *    contributors may be used to endorse or promote products derived\r
+ *    from this software without specific prior written permission.\r
+ *\r
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS\r
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED\r
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR\r
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS\r
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
+ * POSSIBILITY OF SUCH DAMAGE.\r
+ */\r
+\r
+#ifndef _IA64_CPU_COUNTER_H_\r
+#define _IA64_CPU_COUNTER_H_\r
+\r
+/*\r
+ * Machine-specific support for CPU counter.\r
+ */\r
+\r
+#ifdef _KERNEL\r
+\r
+#include <machine/ia64_cpu.h>\r
+\r
+static __inline int\r
+cpu_hascounter(void)\r
+{\r
+       return 1;\r
+}\r
+\r
+static __inline uint64_t\r
+cpu_counter(void)\r
+{\r
+       return ia64_get_itc();\r
+}\r
+\r
+static __inline uint32_t\r
+cpu_counter32(void)\r
+{\r
+       return (ia64_get_itc() & 0xffffffffUL);\r
+}\r
+\r
+static __inline uint64_t\r
+cpu_frequency(struct cpu_info *ci)\r
+{\r
+       extern uint64_t itc_frequency;\r
+\r
+       return itc_frequency;\r
+}\r
+\r
+#endif /* _KERNEL */\r
+\r
+#endif /* !_IA64_CPU_COUNTER_H_ */\r