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

/*
 * Copyright (c) 2003-2009 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * 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.
 * 
 * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
#ifdef	PRIVATE

#ifndef _I386_CPU_CAPABILITIES_H
#define _I386_CPU_CAPABILITIES_H

#ifndef	__ASSEMBLER__
#include <stdint.h>
#endif
 
/*
 * This API only supported for Apple internal use.
 */

/* Bit definitions for _cpu_capabilities: */

#define	kHasMMX				0x00000001
#define	kHasSSE				0x00000002
#define	kHasSSE2			0x00000004
#define	kHasSSE3			0x00000008
#define	kCache32			0x00000010	/* cache line size is 32 bytes */
#define	kCache64			0x00000020
#define	kCache128			0x00000040
#define	kFastThreadLocalStorage		0x00000080	/* TLS ptr is kept in a user-mode-readable register */
#define kHasSupplementalSSE3		0x00000100
#define	k64Bit				0x00000200	/* processor supports EM64T (not what mode you're running in) */
#define	kHasSSE4_1			0x00000400
#define	kHasSSE4_2			0x00000800
#define	kHasAES				0x00001000
#define	kInOrderPipeline		0x00002000
#define	kSlow				0x00004000	/* tsc < nanosecond */
#define	kUP				0x00008000	/* set if (kNumCPUs == 1) */
#define	kNumCPUs			0x00FF0000	/* number of CPUs (see _NumCPUs() below) */
#define	kNumCPUsShift			16
#define	kHasAVX1_0			0x01000000
#define	kHasRDRAND			0x02000000
#define	kHasF16C			0x04000000
#define	kHasENFSTRG			0x08000000
#define	kHasFMA				0x10000000
#define	kHasAVX2_0			0x20000000
#define	kHasBMI1			0x40000000
#define	kHasBMI2			0x80000000
/* Extending into 64-bits from here: */ 
#define	kHasRTM			0x0000000100000000ULL
#define	kHasHLE			0x0000000200000000ULL
#define	kHasRDSEED		0x0000000800000000ULL
#define	kHasADX			0x0000000400000000ULL


#ifndef	__ASSEMBLER__
#include <sys/cdefs.h>

__BEGIN_DECLS
extern uint64_t  _get_cpu_capabilities( void );
__END_DECLS

inline static
int _NumCPUs( void )
{
	return (int) (_get_cpu_capabilities() & kNumCPUs) >> kNumCPUsShift;
}

#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 can be 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 )


/*
 * The shared kernel/user "comm page(s)":
 *
 * The last several pages of every address space are reserved for the kernel/user
 * "comm area". During system initialization, the kernel populates the comm pages with
 * code customized for the particular processor and platform.
 *
 * Because Mach VM cannot map the last page of an address space, we don't use it.
 */
 
#define	_COMM_PAGE32_AREA_LENGTH	( 1 * 4096 )				/* reserved length of entire comm area */
#define _COMM_PAGE32_BASE_ADDRESS	( 0xffff0000 )				/* base address of allocated memory */
#define _COMM_PAGE32_START_ADDRESS	( _COMM_PAGE32_BASE_ADDRESS )	/* address traditional commpage code starts on */
#define _COMM_PAGE32_AREA_USED		( 1 * 4096 )				/* this is the amt actually allocated */
#define _COMM_PAGE32_SIGS_OFFSET	0x8000					    /* offset to routine signatures */

#define	_COMM_PAGE64_AREA_LENGTH	( 1 * 4096 )			/* reserved length of entire comm area (2MB) */
#ifdef __ASSEMBLER__
#define _COMM_PAGE64_BASE_ADDRESS	( 0x00007fffffe00000 )   /* base address of allocated memory */
#else /* __ASSEMBLER__ */
#define _COMM_PAGE64_BASE_ADDRESS	( 0x00007fffffe00000ULL )   /* base address of allocated memory */
#endif /* __ASSEMBLER__ */
#define _COMM_PAGE64_START_ADDRESS	( _COMM_PAGE64_BASE_ADDRESS )	/* address traditional commpage code starts on */
#define _COMM_PAGE64_AREA_USED		( 1 * 4096 )				/* this is the amt actually populated */

/* no need for an Objective-C area on Intel */
#define _COMM_PAGE32_OBJC_SIZE		0ULL
#define _COMM_PAGE32_OBJC_BASE		0ULL
#define _COMM_PAGE64_OBJC_SIZE		0ULL
#define _COMM_PAGE64_OBJC_BASE		0ULL

#ifdef KERNEL_PRIVATE

/* Inside the kernel, comm page addresses are absolute addresses
 * assuming they are a part of the 32-bit commpage. They may
 * be mapped somewhere else, especially for the 64-bit commpage.
 */
#define _COMM_PAGE_START_ADDRESS	_COMM_PAGE32_START_ADDRESS
#define _COMM_PAGE_SIGS_OFFSET		_COMM_PAGE32_SIGS_OFFSET

#else /* !KERNEL_PRIVATE */

#if defined(__i386__)

#define	_COMM_PAGE_AREA_LENGTH		_COMM_PAGE32_AREA_LENGTH
#define _COMM_PAGE_BASE_ADDRESS		_COMM_PAGE32_BASE_ADDRESS
#define _COMM_PAGE_START_ADDRESS	_COMM_PAGE32_START_ADDRESS
#define _COMM_PAGE_AREA_USED		_COMM_PAGE32_AREA_USED
#define _COMM_PAGE_SIGS_OFFSET		_COMM_PAGE32_SIGS_OFFSET

#elif defined(__x86_64__)

#define	_COMM_PAGE_AREA_LENGTH		_COMM_PAGE64_AREA_LENGTH
#define _COMM_PAGE_BASE_ADDRESS		_COMM_PAGE64_BASE_ADDRESS
#define _COMM_PAGE_START_ADDRESS	_COMM_PAGE64_START_ADDRESS
#define _COMM_PAGE_AREA_USED		_COMM_PAGE64_AREA_USED

#else
#error architecture not supported
#endif
 
#endif /* !KERNEL_PRIVATE */

/* data in the comm page */
 
#define _COMM_PAGE_SIGNATURE		(_COMM_PAGE_START_ADDRESS+0x000)	/* first 16 bytes are a signature */
#define _COMM_PAGE_SIGNATURELEN		(0x10)
#define _COMM_PAGE_CPU_CAPABILITIES64	(_COMM_PAGE_START_ADDRESS+0x010)	/* uint64_t _cpu_capabilities */
#define _COMM_PAGE_UNUSED		(_COMM_PAGE_START_ADDRESS+0x018)	/* 6 unused bytes */
#define _COMM_PAGE_VERSION		(_COMM_PAGE_START_ADDRESS+0x01E)	/* 16-bit version# */
#define _COMM_PAGE_THIS_VERSION		13					/* in ver 13, _COMM_PAGE_NT_SHIFT defaults to 0 (was 32) */
  
#define _COMM_PAGE_CPU_CAPABILITIES	(_COMM_PAGE_START_ADDRESS+0x020)	/* uint32_t _cpu_capabilities (retained for compatibility) */
#define _COMM_PAGE_NCPUS		(_COMM_PAGE_START_ADDRESS+0x022)	/* uint8_t number of configured CPUs (hw.logicalcpu at boot time) */
#define _COMM_PAGE_UNUSED0		(_COMM_PAGE_START_ADDRESS+0x024)	/* 2 unused bytes, previouly reserved for expansion of cpu_capabilities */
#define _COMM_PAGE_CACHE_LINESIZE	(_COMM_PAGE_START_ADDRESS+0x026)	/* uint16_t cache line size */

#define _COMM_PAGE_SCHED_GEN		(_COMM_PAGE_START_ADDRESS+0x028)	/* uint32_t scheduler generation number (count of pre-emptions) */
#define _COMM_PAGE_MEMORY_PRESSURE	(_COMM_PAGE_START_ADDRESS+0x02c)	/* uint32_t copy of vm_memory_pressure */
#define	_COMM_PAGE_SPIN_COUNT		(_COMM_PAGE_START_ADDRESS+0x030)	/* uint32_t max spin count for mutex's */

#define _COMM_PAGE_ACTIVE_CPUS		(_COMM_PAGE_START_ADDRESS+0x034)	/* uint8_t number of active CPUs (hw.activecpu) */
#define _COMM_PAGE_PHYSICAL_CPUS	(_COMM_PAGE_START_ADDRESS+0x035)	/* uint8_t number of physical CPUs (hw.physicalcpu_max) */
#define _COMM_PAGE_LOGICAL_CPUS	(_COMM_PAGE_START_ADDRESS+0x036)	/* uint8_t number of logical CPUs (hw.logicalcpu_max) */
#define _COMM_PAGE_UNUSED1		(_COMM_PAGE_START_ADDRESS+0x037)	/* 1 unused bytes */
#define _COMM_PAGE_MEMORY_SIZE		(_COMM_PAGE_START_ADDRESS+0x038)	/* uint64_t max memory size */

#define _COMM_PAGE_CPUFAMILY		(_COMM_PAGE_START_ADDRESS+0x040)	/* uint32_t hw.cpufamily, x86*/
#define _COMM_PAGE_KDEBUG_ENABLE	(_COMM_PAGE_START_ADDRESS+0x044)	/* uint32_t export "kdebug_enable" to userspace */
#define _COMM_PAGE_UNUSED2		(_COMM_PAGE_START_ADDRESS+0x048)	/* [0x48,0x50) unused */

#define	_COMM_PAGE_TIME_DATA_START	(_COMM_PAGE_START_ADDRESS+0x050)	/* base of offsets below (_NT_SCALE etc) */
#define _COMM_PAGE_NT_TSC_BASE		(_COMM_PAGE_START_ADDRESS+0x050)	/* used by nanotime() */
#define _COMM_PAGE_NT_SCALE		(_COMM_PAGE_START_ADDRESS+0x058)	/* used by nanotime() */
#define _COMM_PAGE_NT_SHIFT		(_COMM_PAGE_START_ADDRESS+0x05c)	/* used by nanotime() */
#define _COMM_PAGE_NT_NS_BASE		(_COMM_PAGE_START_ADDRESS+0x060)	/* used by nanotime() */
#define _COMM_PAGE_NT_GENERATION	(_COMM_PAGE_START_ADDRESS+0x068)	/* used by nanotime() */
#define _COMM_PAGE_GTOD_GENERATION	(_COMM_PAGE_START_ADDRESS+0x06c)	/* used by gettimeofday() */
#define _COMM_PAGE_GTOD_NS_BASE		(_COMM_PAGE_START_ADDRESS+0x070)	/* used by gettimeofday() */
#define _COMM_PAGE_GTOD_SEC_BASE	(_COMM_PAGE_START_ADDRESS+0x078)	/* used by gettimeofday() */
/* NOTE: APPROX_TIME must be aligned to 64-byte cache line size: */
#define _COMM_PAGE_APPROX_TIME		(_COMM_PAGE_START_ADDRESS+0x080)	/* used by mach_approximate_time() */
#define _COMM_PAGE_APPROX_TIME_SUPPORTED (_COMM_PAGE_START_ADDRESS+0x088)	/* used by mach_approximate_time() */


#define _COMM_PAGE_END			(_COMM_PAGE_START_ADDRESS+0xfff)	/* end of common page */

/* Warning: kernel commpage.h has a matching c typedef for the following.  They must be kept in sync.  */
/* These offsets are from _COMM_PAGE_TIME_DATA_START */

#define	_NT_TSC_BASE			0
#define	_NT_SCALE			8
#define	_NT_SHIFT			12
#define	_NT_NS_BASE			16
#define	_NT_GENERATION			24
#define	_GTOD_GENERATION		28
#define	_GTOD_NS_BASE			32
#define	_GTOD_SEC_BASE			40
 
 /* jump table (jmp to this address, which may be a branch to the actual code somewhere else) */
 /* When new jump table entries are added, corresponding symbols should be added below        */
 /* New slots should be allocated with at least 16-byte alignment. Some like bcopy require    */
 /* 32-byte alignment, and should be aligned as such in the assembly source before they are relocated */
#define _COMM_PAGE_TEXT_START		(_COMM_PAGE_START_ADDRESS+0x1000)
#define _COMM_PAGE32_TEXT_START         (_COMM_PAGE32_BASE_ADDRESS+0x1000)    /* start of text section */
#define _COMM_PAGE64_TEXT_START		(_COMM_PAGE64_BASE_ADDRESS+0x1000)
#define _COMM_PAGE_TEXT_AREA_USED	( 1 * 4096 )
#define _COMM_PAGE_TEXT_AREA_LENGTH	( 1 * 4096 )
#define _PFZ32_SLIDE_RANGE		( 14 ) /* pages between 0xfffff000 and _COMM_PAGE32_TEXT_START */
#define _PFZ64_SLIDE_RANGE		( 510 ) /* pages between 0x00007ffffffff000 and _COMM_PAGE64_TEXT_START */

/* setup start offset in the commpage text region for each jump table entry 
 * the Comm Page Offset is shortened to _COMM_TEXT_[label]_OFFSET
 */

#define _COMM_TEXT_PREEMPT_OFFSET		(0x5a0)	/* called from withing pfz */
#define _COMM_TEXT_BACKOFF_OFFSET		(0x600)	/* called from PFZ */
#define _COMM_TEXT_PFZ_START_OFFSET		(0xc00)	/* offset for Preemption Free Zone */
#define _COMM_TEXT_PFZ_ENQUEUE_OFFSET		(0xc00)	/* internal FIFO enqueue */
#define _COMM_TEXT_PFZ_DEQUEUE_OFFSET		(0xc80)	/* internal FIFO dequeue */
#define _COMM_TEXT_UNUSED_OFFSET		(0xd80)	/* end of routines in text page */
#define _COMM_TEXT_PFZ_END_OFFSET		(0xfff)	/* offset for end of PFZ */


#define _COMM_PAGE_PREEMPT		(_COMM_PAGE_TEXT_START+_COMM_TEXT_PREEMPT_OFFSET)
#define _COMM_PAGE_BACKOFF		(_COMM_PAGE_TEXT_START+_COMM_TEXT_BACKOFF_OFFSET)	

#define _COMM_PAGE_PFZ_START		(_COMM_PAGE_TEXT_START+_COMM_PAGE_PFZ_START_OFFSET)

#define _COMM_PAGE_PFZ_ENQUEUE		(_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_ENQUEUE_OFFSET)
#define _COMM_PAGE_PFZ_DEQUEUE		(_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_DEQUEUE_OFFSET)

#define	_COMM_PAGE_UNUSED6		(_COMM_PAGE_TEXT_START+_COMM_TEXT_UNUSED_OFFSET)	
#define _COMM_PAGE_PFZ_END		(_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_END_OFFSET)
#define _COMM_PAGE_TEXT_END		(_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_END_OFFSET) /* end of common text page */

/* _COMM_PAGE_COMPARE_AND_SWAP{32,64}B are not used on x86 and are
 * maintained here for source compatability.  These will be removed at
 * some point, so don't go relying on them. */
#define _COMM_PAGE_COMPARE_AND_SWAP32B  (_COMM_PAGE_START_ADDRESS+0xf80)	/* compare-and-swap word w barrier */
#define _COMM_PAGE_COMPARE_AND_SWAP64B  (_COMM_PAGE_START_ADDRESS+0xfc0)	/* compare-and-swap doubleword w barrier */

#ifdef __ASSEMBLER__
#ifdef __COMM_PAGE_SYMBOLS

#define CREATE_COMM_PAGE_SYMBOL(symbol_name, symbol_address)		\
				.org	(symbol_address - (_COMM_PAGE_START_ADDRESS & 0xFFFFE000)) ;\
symbol_name: nop

	.text		/* Required to make a well behaved symbol file */

	CREATE_COMM_PAGE_SYMBOL(___preempt, _COMM_PAGE_PREEMPT)
	CREATE_COMM_PAGE_SYMBOL(___backoff, _COMM_PAGE_BACKOFF)
	CREATE_COMM_PAGE_SYMBOL(___pfz_enqueue, _COMM_PAGE_PFZ_ENQUEUE)
	CREATE_COMM_PAGE_SYMBOL(___pfz_dequeue, _COMM_PAGE_PFZ_DEQUEUE)
	CREATE_COMM_PAGE_SYMBOL(___end_comm_page, _COMM_PAGE_END)

	.data		/* Required to make a well behaved symbol file */
	.long	0	/* Required to make a well behaved symbol file */

#endif /* __COMM_PAGE_SYMBOLS */
#endif /* __ASSEMBLER__ */

#endif /* _I386_CPU_CAPABILITIES_H */
#endif /* PRIVATE */
Commit	Line	Data
43866e37	1	/*
b0d623f7	2	* Copyright (c) 2003-2009 Apple Inc. All rights reserved.
43866e37	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
43866e37	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
43866e37	27	*/
91447636	28	#ifdef PRIVATE
43866e37 A	29
	30	#ifndef _I386_CPU_CAPABILITIES_H
	31	#define _I386_CPU_CAPABILITIES_H
	32
91447636 A	33	#ifndef __ASSEMBLER__
	34	#include <stdint.h>
	35	#endif
55e303ae	36
55e303ae	37	/*
43866e37	38	* This API only supported for Apple internal use.
43866e37 A	39	*/
43866e37 A	40
55e303ae A	41	/* Bit definitions for _cpu_capabilities: */
	42
	43	#define kHasMMX 0x00000001
	44	#define kHasSSE 0x00000002
	45	#define kHasSSE2 0x00000004
91447636	46	#define kHasSSE3 0x00000008
0c530ab8	47	#define kCache32 0x00000010 /* cache line size is 32 bytes */
55e303ae A	48	#define kCache64 0x00000020
55e303ae A	49	#define kCache128 0x00000040
0c530ab8	50	#define kFastThreadLocalStorage 0x00000080 /* TLS ptr is kept in a user-mode-readable register */
2d21ac55	51	#define kHasSupplementalSSE3 0x00000100
0c530ab8	52	#define k64Bit 0x00000200 /* processor supports EM64T (not what mode you're running in) */
2d21ac55 A	53	#define kHasSSE4_1 0x00000400
2d21ac55 A	54	#define kHasSSE4_2 0x00000800
d1ecb069	55	#define kHasAES 0x00001000
6d2010ae	56	#define kInOrderPipeline 0x00002000
2d21ac55	57	#define kSlow 0x00004000 /* tsc < nanosecond */
0c530ab8 A	58	#define kUP 0x00008000 /* set if (kNumCPUs == 1) */
0c530ab8 A	59	#define kNumCPUs 0x00FF0000 /* number of CPUs (see _NumCPUs() below) */
bd504ef0	60	#define kNumCPUsShift 16
6d2010ae	61	#define kHasAVX1_0 0x01000000
7ddcb079 A	62	#define kHasRDRAND 0x02000000
	63	#define kHasF16C 0x04000000
	64	#define kHasENFSTRG 0x08000000
bd504ef0 A	65	#define kHasFMA 0x10000000
	66	#define kHasAVX2_0 0x20000000
	67	#define kHasBMI1 0x40000000
	68	#define kHasBMI2 0x80000000
	69	/* Extending into 64-bits from here: */
	70	#define kHasRTM 0x0000000100000000ULL
	71	#define kHasHLE 0x0000000200000000ULL
a1c7dba1 A	72	#define kHasRDSEED 0x0000000800000000ULL
a1c7dba1 A	73	#define kHasADX 0x0000000400000000ULL
bd504ef0	74
55e303ae	75
43866e37	76	#ifndef __ASSEMBLER__
91447636 A	77	#include <sys/cdefs.h>
	78
	79	__BEGIN_DECLS
bd504ef0	80	extern uint64_t _get_cpu_capabilities( void );
91447636	81	__END_DECLS
55e303ae A	82
	83	inline static
	84	int _NumCPUs( void )
	85	{
bd504ef0	86	return (int) (_get_cpu_capabilities() & kNumCPUs) >> kNumCPUsShift;
55e303ae A	87	}
	88
	89	#endif /* __ASSEMBLER__ */
	90
6d2010ae A	91	/* The following macro is used to generate the 64-bit commpage address for a given
	92	* routine, based on its 32-bit address. This is used in the kernel to compile
	93	* the 64-bit commpage. Since the kernel can be a 32-bit object, cpu_capabilities.h
	94	* only defines the 32-bit address.
	95	*/
	96	#define _COMM_PAGE_32_TO_64( ADDRESS ) ( ADDRESS + _COMM_PAGE64_START_ADDRESS - _COMM_PAGE32_START_ADDRESS )
	97
55e303ae A	98
	99	/*
	100	* The shared kernel/user "comm page(s)":
	101	*
0c530ab8 A	102	* The last several pages of every address space are reserved for the kernel/user
0c530ab8 A	103	* "comm area". During system initialization, the kernel populates the comm pages with
55e303ae A	104	* code customized for the particular processor and platform.
55e303ae A	105	*
0c530ab8	106	* Because Mach VM cannot map the last page of an address space, we don't use it.
55e303ae A	107	*/
55e303ae A	108
316670eb	109	#define _COMM_PAGE32_AREA_LENGTH ( 1 * 4096 ) /* reserved length of entire comm area */
6d2010ae A	110	#define _COMM_PAGE32_BASE_ADDRESS ( 0xffff0000 ) /* base address of allocated memory */
6d2010ae A	111	#define _COMM_PAGE32_START_ADDRESS ( _COMM_PAGE32_BASE_ADDRESS ) /* address traditional commpage code starts on */
316670eb	112	#define _COMM_PAGE32_AREA_USED ( 1 * 4096 ) /* this is the amt actually allocated */
6d2010ae	113	#define _COMM_PAGE32_SIGS_OFFSET 0x8000 /* offset to routine signatures */
0c530ab8	114
316670eb	115	#define _COMM_PAGE64_AREA_LENGTH ( 1 * 4096 ) /* reserved length of entire comm area (2MB) */
6d2010ae A	116	#ifdef __ASSEMBLER__
	117	#define _COMM_PAGE64_BASE_ADDRESS ( 0x00007fffffe00000 ) /* base address of allocated memory */
	118	#else /* __ASSEMBLER__ */
	119	#define _COMM_PAGE64_BASE_ADDRESS ( 0x00007fffffe00000ULL ) /* base address of allocated memory */
	120	#endif /* __ASSEMBLER__ */
	121	#define _COMM_PAGE64_START_ADDRESS ( _COMM_PAGE64_BASE_ADDRESS ) /* address traditional commpage code starts on */
316670eb	122	#define _COMM_PAGE64_AREA_USED ( 1 * 4096 ) /* this is the amt actually populated */
0c530ab8	123
2d21ac55 A	124	/* no need for an Objective-C area on Intel */
	125	#define _COMM_PAGE32_OBJC_SIZE 0ULL
	126	#define _COMM_PAGE32_OBJC_BASE 0ULL
	127	#define _COMM_PAGE64_OBJC_SIZE 0ULL
	128	#define _COMM_PAGE64_OBJC_BASE 0ULL
0c530ab8	129
b0d623f7 A	130	#ifdef KERNEL_PRIVATE
	131
	132	/* Inside the kernel, comm page addresses are absolute addresses
	133	* assuming they are a part of the 32-bit commpage. They may
	134	* be mapped somewhere else, especially for the 64-bit commpage.
	135	*/
	136	#define _COMM_PAGE_START_ADDRESS _COMM_PAGE32_START_ADDRESS
	137	#define _COMM_PAGE_SIGS_OFFSET _COMM_PAGE32_SIGS_OFFSET
	138
	139	#else /* !KERNEL_PRIVATE */
	140
0c530ab8 A	141	#if defined(__i386__)
	142
	143	#define _COMM_PAGE_AREA_LENGTH _COMM_PAGE32_AREA_LENGTH
	144	#define _COMM_PAGE_BASE_ADDRESS _COMM_PAGE32_BASE_ADDRESS
	145	#define _COMM_PAGE_START_ADDRESS _COMM_PAGE32_START_ADDRESS
	146	#define _COMM_PAGE_AREA_USED _COMM_PAGE32_AREA_USED
b0d623f7	147	#define _COMM_PAGE_SIGS_OFFSET _COMM_PAGE32_SIGS_OFFSET
0c530ab8 A	148
	149	#elif defined(__x86_64__)
	150
	151	#define _COMM_PAGE_AREA_LENGTH _COMM_PAGE64_AREA_LENGTH
	152	#define _COMM_PAGE_BASE_ADDRESS _COMM_PAGE64_BASE_ADDRESS
	153	#define _COMM_PAGE_START_ADDRESS _COMM_PAGE64_START_ADDRESS
	154	#define _COMM_PAGE_AREA_USED _COMM_PAGE64_AREA_USED
	155
	156	#else
	157	#error architecture not supported
	158	#endif
55e303ae	159
b0d623f7 A	160	#endif /* !KERNEL_PRIVATE */
b0d623f7 A	161
55e303ae	162	/* data in the comm page */
43866e37	163
bd504ef0 A	164	#define _COMM_PAGE_SIGNATURE (_COMM_PAGE_START_ADDRESS+0x000) /* first 16 bytes are a signature */
	165	#define _COMM_PAGE_SIGNATURELEN (0x10)
	166	#define _COMM_PAGE_CPU_CAPABILITIES64 (_COMM_PAGE_START_ADDRESS+0x010) /* uint64_t _cpu_capabilities */
	167	#define _COMM_PAGE_UNUSED (_COMM_PAGE_START_ADDRESS+0x018) /* 6 unused bytes */
0c530ab8	168	#define _COMM_PAGE_VERSION (_COMM_PAGE_START_ADDRESS+0x01E) /* 16-bit version# */
bd504ef0	169	#define _COMM_PAGE_THIS_VERSION 13 /* in ver 13, _COMM_PAGE_NT_SHIFT defaults to 0 (was 32) */
55e303ae	170
bd504ef0	171	#define _COMM_PAGE_CPU_CAPABILITIES (_COMM_PAGE_START_ADDRESS+0x020) /* uint32_t _cpu_capabilities (retained for compatibility) */
6d2010ae	172	#define _COMM_PAGE_NCPUS (_COMM_PAGE_START_ADDRESS+0x022) /* uint8_t number of configured CPUs (hw.logicalcpu at boot time) */
bd504ef0	173	#define _COMM_PAGE_UNUSED0 (_COMM_PAGE_START_ADDRESS+0x024) /* 2 unused bytes, previouly reserved for expansion of cpu_capabilities */
0c530ab8 A	174	#define _COMM_PAGE_CACHE_LINESIZE (_COMM_PAGE_START_ADDRESS+0x026) /* uint16_t cache line size */
0c530ab8 A	175
2d21ac55	176	#define _COMM_PAGE_SCHED_GEN (_COMM_PAGE_START_ADDRESS+0x028) /* uint32_t scheduler generation number (count of pre-emptions) */
b0d623f7 A	177	#define _COMM_PAGE_MEMORY_PRESSURE (_COMM_PAGE_START_ADDRESS+0x02c) /* uint32_t copy of vm_memory_pressure */
	178	#define _COMM_PAGE_SPIN_COUNT (_COMM_PAGE_START_ADDRESS+0x030) /* uint32_t max spin count for mutex's */
	179
6d2010ae A	180	#define _COMM_PAGE_ACTIVE_CPUS (_COMM_PAGE_START_ADDRESS+0x034) /* uint8_t number of active CPUs (hw.activecpu) */
	181	#define _COMM_PAGE_PHYSICAL_CPUS (_COMM_PAGE_START_ADDRESS+0x035) /* uint8_t number of physical CPUs (hw.physicalcpu_max) */
	182	#define _COMM_PAGE_LOGICAL_CPUS (_COMM_PAGE_START_ADDRESS+0x036) /* uint8_t number of logical CPUs (hw.logicalcpu_max) */
	183	#define _COMM_PAGE_UNUSED1 (_COMM_PAGE_START_ADDRESS+0x037) /* 1 unused bytes */
	184	#define _COMM_PAGE_MEMORY_SIZE (_COMM_PAGE_START_ADDRESS+0x038) /* uint64_t max memory size */
b0d623f7	185
6d2010ae	186	#define _COMM_PAGE_CPUFAMILY (_COMM_PAGE_START_ADDRESS+0x040) /* uint32_t hw.cpufamily, x86*/
a1c7dba1 A	187	#define _COMM_PAGE_KDEBUG_ENABLE (_COMM_PAGE_START_ADDRESS+0x044) /* uint32_t export "kdebug_enable" to userspace */
a1c7dba1 A	188	#define _COMM_PAGE_UNUSED2 (_COMM_PAGE_START_ADDRESS+0x048) /* [0x48,0x50) unused */
b0d623f7	189
2d21ac55	190	#define _COMM_PAGE_TIME_DATA_START (_COMM_PAGE_START_ADDRESS+0x050) /* base of offsets below (_NT_SCALE etc) */
0c530ab8 A	191	#define _COMM_PAGE_NT_TSC_BASE (_COMM_PAGE_START_ADDRESS+0x050) /* used by nanotime() */
	192	#define _COMM_PAGE_NT_SCALE (_COMM_PAGE_START_ADDRESS+0x058) /* used by nanotime() */
	193	#define _COMM_PAGE_NT_SHIFT (_COMM_PAGE_START_ADDRESS+0x05c) /* used by nanotime() */
	194	#define _COMM_PAGE_NT_NS_BASE (_COMM_PAGE_START_ADDRESS+0x060) /* used by nanotime() */
2d21ac55 A	195	#define _COMM_PAGE_NT_GENERATION (_COMM_PAGE_START_ADDRESS+0x068) /* used by nanotime() */
	196	#define _COMM_PAGE_GTOD_GENERATION (_COMM_PAGE_START_ADDRESS+0x06c) /* used by gettimeofday() */
	197	#define _COMM_PAGE_GTOD_NS_BASE (_COMM_PAGE_START_ADDRESS+0x070) /* used by gettimeofday() */
	198	#define _COMM_PAGE_GTOD_SEC_BASE (_COMM_PAGE_START_ADDRESS+0x078) /* used by gettimeofday() */
fe8ab488 A	199	/* NOTE: APPROX_TIME must be aligned to 64-byte cache line size: */
	200	#define _COMM_PAGE_APPROX_TIME (_COMM_PAGE_START_ADDRESS+0x080) /* used by mach_approximate_time() */
	201	#define _COMM_PAGE_APPROX_TIME_SUPPORTED (_COMM_PAGE_START_ADDRESS+0x088) /* used by mach_approximate_time() */
	202
2d21ac55	203
316670eb A	204	#define _COMM_PAGE_END (_COMM_PAGE_START_ADDRESS+0xfff) /* end of common page */
316670eb A	205
2d21ac55 A	206	/* Warning: kernel commpage.h has a matching c typedef for the following. They must be kept in sync. */
2d21ac55 A	207	/* These offsets are from _COMM_PAGE_TIME_DATA_START */
0c530ab8	208
2d21ac55	209	#define _NT_TSC_BASE 0
0c530ab8 A	210	#define _NT_SCALE 8
	211	#define _NT_SHIFT 12
	212	#define _NT_NS_BASE 16
2d21ac55 A	213	#define _NT_GENERATION 24
	214	#define _GTOD_GENERATION 28
	215	#define _GTOD_NS_BASE 32
	216	#define _GTOD_SEC_BASE 40
6601e61a	217
0c530ab8	218	/* jump table (jmp to this address, which may be a branch to the actual code somewhere else) */
b0d623f7 A	219	/* When new jump table entries are added, corresponding symbols should be added below */
	220	/* New slots should be allocated with at least 16-byte alignment. Some like bcopy require */
	221	/* 32-byte alignment, and should be aligned as such in the assembly source before they are relocated */
316670eb A	222	#define _COMM_PAGE_TEXT_START (_COMM_PAGE_START_ADDRESS+0x1000)
	223	#define _COMM_PAGE32_TEXT_START (_COMM_PAGE32_BASE_ADDRESS+0x1000) /* start of text section */
	224	#define _COMM_PAGE64_TEXT_START (_COMM_PAGE64_BASE_ADDRESS+0x1000)
	225	#define _COMM_PAGE_TEXT_AREA_USED ( 1 * 4096 )
	226	#define _COMM_PAGE_TEXT_AREA_LENGTH ( 1 * 4096 )
	227	#define _PFZ32_SLIDE_RANGE ( 14 ) /* pages between 0xfffff000 and _COMM_PAGE32_TEXT_START */
	228	#define _PFZ64_SLIDE_RANGE ( 510 ) /* pages between 0x00007ffffffff000 and _COMM_PAGE64_TEXT_START */
	229
	230	/* setup start offset in the commpage text region for each jump table entry
	231	* the Comm Page Offset is shortened to _COMM_TEXT_[label]_OFFSET
	232	*/
0c530ab8	233
316670eb A	234	#define _COMM_TEXT_PREEMPT_OFFSET (0x5a0) /* called from withing pfz */
	235	#define _COMM_TEXT_BACKOFF_OFFSET (0x600) /* called from PFZ */
	236	#define _COMM_TEXT_PFZ_START_OFFSET (0xc00) /* offset for Preemption Free Zone */
	237	#define _COMM_TEXT_PFZ_ENQUEUE_OFFSET (0xc00) /* internal FIFO enqueue */
	238	#define _COMM_TEXT_PFZ_DEQUEUE_OFFSET (0xc80) /* internal FIFO dequeue */
316670eb A	239	#define _COMM_TEXT_UNUSED_OFFSET (0xd80) /* end of routines in text page */
316670eb A	240	#define _COMM_TEXT_PFZ_END_OFFSET (0xfff) /* offset for end of PFZ */
b0d623f7	241
b0d623f7	242
316670eb A	243	#define _COMM_PAGE_PREEMPT (_COMM_PAGE_TEXT_START+_COMM_TEXT_PREEMPT_OFFSET)
316670eb A	244	#define _COMM_PAGE_BACKOFF (_COMM_PAGE_TEXT_START+_COMM_TEXT_BACKOFF_OFFSET)
b0d623f7	245
316670eb	246	#define _COMM_PAGE_PFZ_START (_COMM_PAGE_TEXT_START+_COMM_PAGE_PFZ_START_OFFSET)
b0d623f7	247
316670eb A	248	#define _COMM_PAGE_PFZ_ENQUEUE (_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_ENQUEUE_OFFSET)
316670eb A	249	#define _COMM_PAGE_PFZ_DEQUEUE (_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_DEQUEUE_OFFSET)
55e303ae	250
316670eb A	251	#define _COMM_PAGE_UNUSED6 (_COMM_PAGE_TEXT_START+_COMM_TEXT_UNUSED_OFFSET)
	252	#define _COMM_PAGE_PFZ_END (_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_END_OFFSET)
	253	#define _COMM_PAGE_TEXT_END (_COMM_PAGE_TEXT_START+_COMM_TEXT_PFZ_END_OFFSET) /* end of common text page */
55e303ae	254
0c530ab8 A	255	/* _COMM_PAGE_COMPARE_AND_SWAP{32,64}B are not used on x86 and are
	256	* maintained here for source compatability. These will be removed at
	257	* some point, so don't go relying on them. */
	258	#define _COMM_PAGE_COMPARE_AND_SWAP32B (_COMM_PAGE_START_ADDRESS+0xf80) /* compare-and-swap word w barrier */
	259	#define _COMM_PAGE_COMPARE_AND_SWAP64B (_COMM_PAGE_START_ADDRESS+0xfc0) /* compare-and-swap doubleword w barrier */
55e303ae A	260
	261	#ifdef __ASSEMBLER__
	262	#ifdef __COMM_PAGE_SYMBOLS
	263
	264	#define CREATE_COMM_PAGE_SYMBOL(symbol_name, symbol_address) \
0c530ab8	265	.org (symbol_address - (_COMM_PAGE_START_ADDRESS & 0xFFFFE000)) ;\
55e303ae A	266	symbol_name: nop
55e303ae A	267
0c530ab8	268	.text /* Required to make a well behaved symbol file */
55e303ae	269
6d2010ae	270	CREATE_COMM_PAGE_SYMBOL(___preempt, _COMM_PAGE_PREEMPT)
b0d623f7	271	CREATE_COMM_PAGE_SYMBOL(___backoff, _COMM_PAGE_BACKOFF)
b0d623f7 A	272	CREATE_COMM_PAGE_SYMBOL(___pfz_enqueue, _COMM_PAGE_PFZ_ENQUEUE)
b0d623f7 A	273	CREATE_COMM_PAGE_SYMBOL(___pfz_dequeue, _COMM_PAGE_PFZ_DEQUEUE)
55e303ae A	274	CREATE_COMM_PAGE_SYMBOL(___end_comm_page, _COMM_PAGE_END)
55e303ae A	275
0c530ab8 A	276	.data /* Required to make a well behaved symbol file */
0c530ab8 A	277	.long 0 /* Required to make a well behaved symbol file */
55e303ae A	278
	279	#endif /* __COMM_PAGE_SYMBOLS */
	280	#endif /* __ASSEMBLER__ */
43866e37	281
43866e37	282	#endif /* _I386_CPU_CAPABILITIES_H */
91447636	283	#endif /* PRIVATE */