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  * Copyright 2018 Joyent, Inc.
  26  */
  27 
  28 #ifndef _SYS_X_CALL_H
  29 #define _SYS_X_CALL_H
  30 
  31 #ifdef  __cplusplus
  32 extern "C" {
  33 #endif
  34 
  35 #ifndef _ASM
  36 
  37 #define XC_MSG_FREE     (0)     /* msg in xc_free queue */
  38 #define XC_MSG_ASYNC    (1)     /* msg in slave xc_msgbox */
  39 #define XC_MSG_CALL     (2)     /* msg in slave xc_msgbox */
  40 #define XC_MSG_SYNC     (3)     /* msg in slave xc_msgbox */
  41 #define XC_MSG_WAITING  (4)     /* msg in master xc_msgbox or xc_waiters */
  42 #define XC_MSG_RELEASED (5)     /* msg in slave xc_msgbox */
  43 #define XC_MSG_DONE     (6)     /* msg in master xc_msgbox */
  44 
  45 typedef uintptr_t xc_arg_t;
  46 typedef int (*xc_func_t)(xc_arg_t, xc_arg_t, xc_arg_t);
  47 
  48 /*
  49  * One of these is stored in each CPU's machcpu data, plus one extra for
  50  * priority (ie panic) messages
  51  */
  52 typedef struct xc_data {
  53         xc_func_t       xc_func;
  54         xc_arg_t        xc_a1;
  55         xc_arg_t        xc_a2;
  56         xc_arg_t        xc_a3;
  57 } xc_data_t;
  58 
  59 /*
  60  * This is kept as small as possible, since for N CPUs we need N * N of them.
  61  */
  62 typedef struct xc_msg {
  63         uint8_t         xc_command;
  64         uint16_t        xc_master;
  65         uint16_t        xc_slave;
  66         struct xc_msg   *xc_next;
  67 } xc_msg_t;
  68 
  69 /*
  70  * Cross-call routines.
  71  */
  72 #if defined(_KERNEL)
  73 
  74 extern void     xc_init_cpu(struct cpu *);
  75 extern void     xc_fini_cpu(struct cpu *);
  76 extern int      xc_flush_cpu(struct cpu *);
  77 extern uint_t   xc_serv(caddr_t, caddr_t);
  78 
  79 #define CPUSET2BV(set)  ((ulong_t *)(void *)&(set))
  80 extern void     xc_call(xc_arg_t, xc_arg_t, xc_arg_t, ulong_t *, xc_func_t);
  81 extern void     xc_call_nowait(xc_arg_t, xc_arg_t, xc_arg_t, ulong_t *,
  82     xc_func_t);
  83 extern void     xc_sync(xc_arg_t, xc_arg_t, xc_arg_t, ulong_t *, xc_func_t);
  84 extern void     xc_priority(xc_arg_t, xc_arg_t, xc_arg_t, ulong_t *, xc_func_t);
  85 
  86 #endif  /* _KERNEL */
  87 
  88 #endif  /* !_ASM */
  89 
  90 #ifdef  __cplusplus
  91 }
  92 #endif
  93 
  94 #endif  /* _SYS_X_CALL_H */