osfmk/chud/i386/chud_xnu_private.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
  29 #ifndef _I386_CHUD_XNU_PRIVATE_H_
  30 #define _I386_CHUD_XNU_PRIVATE_H_
  31
  32 #include <kern/queue.h>
  33
  34 #pragma mark **** cpu timer ****
  35
  36 /*
  37  * Cross-cpu signal request entries are queued on the target cpu's
  38  * chudcpu_data_t struct. This differs from PPC because i386 doesn't
  39  * support sending arguments with cross-cpu signals. Hence we have
  40  * to do it ourselves.
  41  */
  42 typedef struct {
  43         struct queue_entry req_entry;   /* Must be first */
  44         uint32_t req_type;
  45         uint32_t req_code;
  46         volatile uint32_t req_sync;
  47 } chudcpu_signal_request_t;
  48
  49 typedef struct {
  50         void                                    *cpu_chud_fn_tablep;
  51         timer_call_data_t               cpu_timer_call;
  52         uint64_t                                t_deadline;
  53         chudxnu_cpu_timer_callback_func_t       cpu_timer_callback_fn;
  54         mpqueue_head_t                  cpu_request_queue;
  55 } chudcpu_data_t;
  56 /* NB: cpu_chud_fn_tablep is expected to be the first member, at offset 0 */
  57
  58 extern void chudxnu_cpu_signal_handler(void);
  59
  60 #endif /* _I386_CHUD_XNU_PRIVATE_H_ */