xnu-1699.26.8.tar.gz

[apple/xnu.git] / osfmk / i386 / tsc.h

diff --git a/osfmk/i386/tsc.h b/osfmk/i386/tsc.h
index df66a83c0da1dfa53fa15cd6d59b7f762d48c9da..2f6011b931b7c21bd663146384a26680b5a9bec3 100644 (file)
--- a/osfmk/i386/tsc.h
+++ b/osfmk/i386/tsc.h
@@ -1,5 +1,5 @@
 /*
 /*

- * Copyright (c) 2004-2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2004-2007 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 


@@ -40,10 +40,11 @@
 #ifndef _I386_TSC_H_
 #define _I386_TSC_H_
 
 #ifndef _I386_TSC_H_
 #define _I386_TSC_H_
 

-#define BusRatioShift 40
-#define BusRatioMask 0x1F
-#define IA32_PERF_STS 0x198
+#define BASE_NHM_CLOCK_SOURCE  133333333ULL
+#define IA32_PERF_STS          0x198
+#define        SLOW_TSC_THRESHOLD      1000067800      /* TSC is too slow for regular nanotime() algorithm */

 
 

+#ifndef ASSEMBLER

 extern uint64_t        busFCvtt2n;
 extern uint64_t        busFCvtn2t;
 extern uint64_t tscFreq;
 extern uint64_t        busFCvtt2n;
 extern uint64_t        busFCvtn2t;
 extern uint64_t tscFreq;


@@ -51,22 +52,30 @@ extern uint64_t tscFCvtt2n;
 extern uint64_t tscFCvtn2t;
 extern uint64_t tscGranularity;
 extern uint64_t bus2tsc;
 extern uint64_t tscFCvtn2t;
 extern uint64_t tscGranularity;
 extern uint64_t bus2tsc;

+extern uint64_t busFreq;
+extern uint32_t        flex_ratio;
+extern uint32_t        flex_ratio_min;
+extern uint32_t        flex_ratio_max;

 
 struct tscInfo
 {
 
 struct tscInfo
 {

-uint64_t       busFCvtt2n;
-uint64_t       busFCvtn2t;
-uint64_t       tscFreq;
-uint64_t       tscFCvtt2n;
-uint64_t       tscFCvtn2t;
-uint64_t       tscGranularity;
-uint64_t       bus2tsc;
+       uint64_t        busFCvtt2n;
+       uint64_t        busFCvtn2t;
+       uint64_t        tscFreq;
+       uint64_t        tscFCvtt2n;
+       uint64_t        tscFCvtn2t;
+       uint64_t        tscGranularity;
+       uint64_t        bus2tsc;
+       uint64_t        busFreq;
+       uint32_t        flex_ratio;
+       uint32_t        flex_ratio_min;
+       uint32_t        flex_ratio_max;

 };
 typedef struct tscInfo tscInfo_t;
 
 extern void tsc_get_info(tscInfo_t *info);
 
 extern void tsc_init(void);
 };
 typedef struct tscInfo tscInfo_t;
 
 extern void tsc_get_info(tscInfo_t *info);
 
 extern void tsc_init(void);

-
+#endif /* ASSEMBLER */

 #endif /* _I386_TSC_H_ */
 #endif /* KERNEL_PRIVATE */
 #endif /* _I386_TSC_H_ */
 #endif /* KERNEL_PRIVATE */