osfmk/i386/cpu_threads.h

   1 /*
   2  * Copyright (c) 2003-2007 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   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.
  14  *
  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
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  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.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 #ifndef _I386_CPU_THREADS_H_
  29 #define _I386_CPU_THREADS_H_
  30
  31 #include <i386/cpu_data.h>
  32 #include <i386/mp.h>
  33 #include <i386/cpu_topology.h>
  34
  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  */
  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
  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)
  48
  49 #define cpu_to_lcpu(cpu)                ((cpu_datap(cpu) != NULL) ? _cpu_to_lcpu(cpu) : NULL)
  50 #define cpu_to_core(cpu)                ((cpu_to_lcpu(cpu) != NULL) ? _cpu_to_lcpu(cpu)->core : NULL)
  51 #define cpu_to_package(cpu)             ((cpu_to_core(cpu) != NULL) ? _cpu_to_core(cpu)->package : NULL)
  52
  53 /* Fast access: */
  54 #define x86_lcpu()                      (&current_cpu_datap()->lcpu)
  55 #define x86_core()                      (x86_lcpu()->core)
  56 #define x86_package()                   (x86_core()->package)
  57
  58 #define cpu_is_same_core(cpu1,cpu2)     (cpu_to_core(cpu1) == cpu_to_core(cpu2))
  59 #define cpu_is_same_package(cpu1,cpu2)  (cpu_to_package(cpu1) == cpu_to_package(cpu2))
  60 #define cpus_share_cache(cpu1,cpu2,_cl) (cpu_to_lcpu(cpu1)->caches[_cl] == cpu_to_lcpu(cpu2)->caches[_cl])
  61
  62 extern decl_simple_lock_data(, x86_topo_lock);
  63
  64 extern void *cpu_thread_alloc(int);
  65 extern void cpu_thread_init(void);
  66 extern void cpu_thread_halt(void);
  67
  68 #endif /* _I386_CPU_THREADS_H_ */