osfmk/chud/i386/chud_xnu_private.h

   1 /*
   2  * Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22
  23 #ifndef _I386_CHUD_XNU_PRIVATE_H_
  24 #define _I386_CHUD_XNU_PRIVATE_H_
  25
  26 #include <kern/queue.h>
  27
  28 #pragma mark **** cpu timer ****
  29
  30 /*
  31  * Cross-cpu signal request entries are queued on the target cpu's
  32  * chudcpu_data_t struct. This differs from PPC because i386 doesn't
  33  * support sending arguments with cross-cpu signals. Hence we have
  34  * to do it ourselves.
  35  */
  36 typedef struct {
  37         struct queue_entry      req_entry;      /* Must be first */
  38         uint32_t                req_type;
  39         uint32_t                req_code;
  40         volatile uint32_t       req_sync;
  41 } chudcpu_signal_request_t;
  42
  43 typedef struct {
  44         void                                    *cpu_chud_fn_tablep;
  45         timer_call_data_t                       cpu_timer_call;
  46         uint64_t                                t_deadline;
  47         chudxnu_cpu_timer_callback_func_t       cpu_timer_callback_fn;
  48         mpqueue_head_t                          cpu_request_queue;
  49 } chudcpu_data_t;
  50 /* NB: cpu_chud_fn_tablep is expected to be the first member, at offset 0 */
  51
  52 extern void chudxnu_cpu_signal_handler(void);
  53
  54 #endif /* _I386_CHUD_XNU_PRIVATE_H_ */