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

/*
 * Copyright (c) 2003-2007 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@
 */
#ifndef _I386_CPU_THREADS_H_
#define _I386_CPU_THREADS_H_

#include <i386/cpu_data.h>
#include <i386/mp.h>
#include <i386/cpu_topology.h>

/*
 * These are defined here rather than in cpu_topology.h so as to keep
 * cpu_topology.h from having a dependency on cpu_data.h.
 */
#define CPU_THREAD_MASK			0x00000001
#define cpu_to_core_lapic(cpu)		(cpu_to_lapic[cpu] & ~CPU_THREAD_MASK)
#define cpu_to_core_cpu(cpu)		(lapic_to_cpu[cpu_to_core_lapic(cpu)])
#define cpu_to_logical_cpu(cpu)		(cpu_to_lapic[cpu] & CPU_THREAD_MASK)
#define cpu_is_core_cpu(cpu)		(cpu_to_logical_cpu(cpu) == 0)

#define cpu_to_lcpu(cpu)		(&cpu_datap(cpu)->lcpu)
#define cpu_to_core(cpu)		(cpu_to_lcpu(cpu)->core)
#define cpu_to_package(cpu)		(cpu_to_core(cpu)->package)

/* Fast access: */
#define x86_lcpu()			(&current_cpu_datap()->lcpu)
#define x86_core()			(x86_lcpu()->core)
#define x86_package()			(x86_core()->package)

#define cpu_is_same_core(cpu1,cpu2)	(cpu_to_core(cpu1) == cpu_to_core(cpu2))
#define cpu_is_same_package(cpu1,cpu2)	(cpu_to_package(cpu1) == cpu_to_package(cpu2))
#define cpus_share_cache(cpu1,cpu2,_cl) (cpu_to_lcpu(cpu1)->caches[_cl] == cpu_to_lcpu(cpu2)->caches[_cl])

extern decl_simple_lock_data(, x86_topo_lock);

extern void *cpu_thread_alloc(int);
extern void cpu_thread_init(void);
extern void cpu_thread_halt(void);

#endif /* _I386_CPU_THREADS_H_ */
Commit	Line	Data
91447636	1	/*
2d21ac55	2	* Copyright (c) 2003-2007 Apple Inc. All rights reserved.
91447636	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
91447636	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@
91447636 A	27	*/
	28	#ifndef _I386_CPU_THREADS_H_
	29	#define _I386_CPU_THREADS_H_
	30
91447636	31	#include <i386/cpu_data.h>
2d21ac55 A	32	#include <i386/mp.h>
2d21ac55 A	33	#include <i386/cpu_topology.h>
91447636	34
2d21ac55 A	35	/*
	36	* These are defined here rather than in cpu_topology.h so as to keep
	37	* cpu_topology.h from having a dependency on cpu_data.h.
	38	*/
91447636 A	39	#define CPU_THREAD_MASK 0x00000001
	40	#define cpu_to_core_lapic(cpu) (cpu_to_lapic[cpu] & ~CPU_THREAD_MASK)
	41	#define cpu_to_core_cpu(cpu) (lapic_to_cpu[cpu_to_core_lapic(cpu)])
	42	#define cpu_to_logical_cpu(cpu) (cpu_to_lapic[cpu] & CPU_THREAD_MASK)
	43	#define cpu_is_core_cpu(cpu) (cpu_to_logical_cpu(cpu) == 0)
	44
2d21ac55 A	45	#define cpu_to_lcpu(cpu) (&cpu_datap(cpu)->lcpu)
	46	#define cpu_to_core(cpu) (cpu_to_lcpu(cpu)->core)
	47	#define cpu_to_package(cpu) (cpu_to_core(cpu)->package)
91447636 A	48
91447636 A	49	/* Fast access: */
2d21ac55 A	50	#define x86_lcpu() (&current_cpu_datap()->lcpu)
	51	#define x86_core() (x86_lcpu()->core)
	52	#define x86_package() (x86_core()->package)
91447636 A	53
91447636 A	54	#define cpu_is_same_core(cpu1,cpu2) (cpu_to_core(cpu1) == cpu_to_core(cpu2))
2d21ac55 A	55	#define cpu_is_same_package(cpu1,cpu2) (cpu_to_package(cpu1) == cpu_to_package(cpu2))
	56	#define cpus_share_cache(cpu1,cpu2,_cl) (cpu_to_lcpu(cpu1)->caches[_cl] == cpu_to_lcpu(cpu2)->caches[_cl])
	57
	58	extern decl_simple_lock_data(, x86_topo_lock);
91447636	59
0c530ab8	60	extern void *cpu_thread_alloc(int);
91447636 A	61	extern void cpu_thread_init(void);
	62	extern void cpu_thread_halt(void);
	63
91447636	64	#endif /* _I386_CPU_THREADS_H_ */