X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/e5568f75972dfc723778653c11cb6b4dc825716a..593a1d5fd87cdf5b46dd5fcb84467b432cea0f91:/osfmk/i386/commpage/commpage.h

diff --git a/osfmk/i386/commpage/commpage.h b/osfmk/i386/commpage/commpage.h
index 1e368d84d..0288a906c 100644
--- a/osfmk/i386/commpage/commpage.h
+++ b/osfmk/i386/commpage/commpage.h
@@ -1,23 +1,29 @@
 /*
- * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2003-2007 Apple Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 
 #ifndef _I386_COMMPAGE_H
@@ -27,8 +33,15 @@
 #include <stdint.h>
 #endif /* __ASSEMBLER__ */
 
+/* The following macro is used to generate the 64-bit commpage address for a given
+ * routine, based on its 32-bit address.  This is used in the kernel to compile
+ * the 64-bit commpage.  Since the kernel is a 32-bit object, cpu_capabilities.h
+ * only defines the 32-bit address.
+ */
+#define	_COMM_PAGE_32_TO_64( ADDRESS )	( ADDRESS + _COMM_PAGE64_START_ADDRESS - _COMM_PAGE32_START_ADDRESS )
+
+
 #ifdef	__ASSEMBLER__
-#include <machine/asm.h>
 
 #define	COMMPAGE_DESCRIPTOR(label,address,must,cant)	\
 L ## label ## _end:					;\
@@ -59,9 +72,31 @@ typedef	struct	commpage_descriptor	{
 } commpage_descriptor;
 
 
-extern	char	*commPagePtr;				// virt address of commpage in kernel map
+/* Warning: following structure must match the layout of the commpage.  */
+/* This is the data starting at _COMM_PAGE_TIME_DATA_START, ie for nanotime() and gettimeofday() */
+
+typedef	volatile struct	commpage_time_data	{
+	uint64_t	nt_tsc_base;				// _COMM_PAGE_NT_TSC_BASE
+	uint32_t	nt_scale;				// _COMM_PAGE_NT_SCALE
+	uint32_t	nt_shift;				// _COMM_PAGE_NT_SHIFT
+	uint64_t	nt_ns_base;				// _COMM_PAGE_NT_NS_BASE
+	uint32_t	nt_generation;				// _COMM_PAGE_NT_GENERATION
+	uint32_t	gtod_generation;			// _COMM_PAGE_GTOD_GENERATION
+	uint64_t	gtod_ns_base;				// _COMM_PAGE_GTOD_NS_BASE
+	uint64_t	gtod_sec_base;				// _COMM_PAGE_GTOD_SEC_BASE
+} commpage_time_data;
+
+
+extern	char	*commPagePtr32;				// virt address of 32-bit commpage in kernel map
+extern	char	*commPagePtr64;				// ...and of 64-bit commpage
+
+extern	void	commpage_set_timestamp(uint64_t abstime, uint64_t secs);
+
+extern	void	commpage_disable_timestamp( void );
+
+extern  void	commpage_set_nanotime(uint64_t tsc_base, uint64_t ns_base, uint32_t scale, uint32_t shift);
 
-extern	void	commpage_set_timestamp(uint64_t tbr,uint32_t secs,uint32_t usecs,uint32_t ticks_per_sec);
+extern	void	commpage_sched_gen_inc(void);
 
 #endif	/* __ASSEMBLER__ */