usr/src/uts/i86pc/sys/x_call.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SYS_X_CALL_H
  28 #define _SYS_X_CALL_H
  29
  30 #ifdef  __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 #ifndef _ASM
  35
  36 typedef uintptr_t xc_arg_t;
  37 typedef int (*xc_func_t)(xc_arg_t, xc_arg_t, xc_arg_t);
  38
  39 /*
  40  * One of these is stored in each CPU's machcpu data, plus one extra for
  41  * priority (ie panic) messages
  42  */
  43 typedef struct xc_data {
  44         xc_func_t       xc_func;
  45         xc_arg_t        xc_a1;
  46         xc_arg_t        xc_a2;
  47         xc_arg_t        xc_a3;
  48 } xc_data_t;
  49
  50 /*
  51  * This is kept as small as possible, since for N CPUs we need N * N of them.
  52  */
  53 typedef struct xc_msg {
  54         uint8_t         xc_command;
  55 #ifdef __amd64
  56         uint16_t        xc_master;
  57         uint16_t        xc_slave;
  58 #else
  59         uint8_t         xc_master;
  60         uint8_t         xc_slave;
  61 #endif
  62         struct xc_msg   *xc_next;
  63 } xc_msg_t;
  64
  65 /*
  66  * Cross-call routines.
  67  */
  68 #if defined(_KERNEL)
  69
  70 extern void     xc_init_cpu(struct cpu *);
  71 extern void     xc_fini_cpu(struct cpu *);
  72 extern int      xc_flush_cpu(struct cpu *);
  73 extern uint_t   xc_serv(caddr_t, caddr_t);
  74
  75 #define CPUSET2BV(set)  ((ulong_t *)(void *)&(set))
  76 extern void     xc_call(xc_arg_t, xc_arg_t, xc_arg_t, ulong_t *, xc_func_t);
  77 extern void     xc_call_nowait(xc_arg_t, xc_arg_t, xc_arg_t, ulong_t *,
  78     xc_func_t);
  79 extern void     xc_sync(xc_arg_t, xc_arg_t, xc_arg_t, ulong_t *, xc_func_t);
  80 extern void     xc_priority(xc_arg_t, xc_arg_t, xc_arg_t, ulong_t *, xc_func_t);
  81
  82 #endif  /* _KERNEL */
  83
  84 #endif  /* !_ASM */
  85
  86 #ifdef  __cplusplus
  87 }
  88 #endif
  89
  90 #endif  /* _SYS_X_CALL_H */