11584 ::xcall would be useful
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>

          --- old/usr/src/uts/i86pc/sys/x_call.h
          +++ new/usr/src/uts/i86pc/sys/x_call.h

   1    1  /*
   2    2   * CDDL HEADER START
   3    3   *
   4    4   * The contents of this file are subject to the terms of the
   5    5   * Common Development and Distribution License (the "License").
   6    6   * You may not use this file except in compliance with the License.
   7    7   *
   8    8   * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9    9   * or http://www.opensolaris.org/os/licensing.
  10   10   * See the License for the specific language governing permissions
  11   11   * and limitations under the License.
  12   12   *
  13   13   * When distributing Covered Code, include this CDDL HEADER in each
  14   14   * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

  15   15   * If applicable, add the following below this CDDL HEADER, with the
  16   16   * fields enclosed by brackets "[]" replaced with your own identifying
  17   17   * information: Portions Copyright [yyyy] [name of copyright owner]
  18   18   *
  19   19   * CDDL HEADER END
  20   20   */
  21   21  
  22   22  /*
  23   23   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24   24   * Use is subject to license terms.
       25 + * Copyright 2018 Joyent, Inc.
  25   26   */
  26   27  
  27   28  #ifndef _SYS_X_CALL_H
  28   29  #define _SYS_X_CALL_H
  29   30  
  30   31  #ifdef  __cplusplus
  31   32  extern "C" {
  32   33  #endif
  33   34  
  34   35  #ifndef _ASM
  35   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 +
  36   45  typedef uintptr_t xc_arg_t;
  37   46  typedef int (*xc_func_t)(xc_arg_t, xc_arg_t, xc_arg_t);
  38   47  
  39   48  /*
  40   49   * One of these is stored in each CPU's machcpu data, plus one extra for
  41   50   * priority (ie panic) messages
  42   51   */
  43   52  typedef struct xc_data {
  44   53          xc_func_t       xc_func;
  45   54          xc_arg_t        xc_a1;
  46   55          xc_arg_t        xc_a2;
  47   56          xc_arg_t        xc_a3;
  48   57  } xc_data_t;
  49   58  
  50   59  /*
  51   60   * This is kept as small as possible, since for N CPUs we need N * N of them.
  52   61   */
  53   62  typedef struct xc_msg {
  54   63          uint8_t         xc_command;
  55      -#ifdef __amd64
  56   64          uint16_t        xc_master;
  57   65          uint16_t        xc_slave;
  58      -#else
  59      -        uint8_t         xc_master;
  60      -        uint8_t         xc_slave;
  61      -#endif
  62   66          struct xc_msg   *xc_next;
  63   67  } xc_msg_t;
  64   68  
  65   69  /*
  66   70   * Cross-call routines.
  67   71   */
  68   72  #if defined(_KERNEL)
  69   73  
  70   74  extern void     xc_init_cpu(struct cpu *);
  71   75  extern void     xc_fini_cpu(struct cpu *);

  72   76  extern int      xc_flush_cpu(struct cpu *);
  73   77  extern uint_t   xc_serv(caddr_t, caddr_t);
  74   78  
  75   79  #define CPUSET2BV(set)  ((ulong_t *)(void *)&(set))
  76   80  extern void     xc_call(xc_arg_t, xc_arg_t, xc_arg_t, ulong_t *, xc_func_t);
  77   81  extern void     xc_call_nowait(xc_arg_t, xc_arg_t, xc_arg_t, ulong_t *,
  78   82      xc_func_t);
  79   83  extern void     xc_sync(xc_arg_t, xc_arg_t, xc_arg_t, ulong_t *, xc_func_t);
  80   84  extern void     xc_priority(xc_arg_t, xc_arg_t, xc_arg_t, ulong_t *, xc_func_t);
  81   85  
  82   86  #endif  /* _KERNEL */
  83   87  
  84   88  #endif  /* !_ASM */
  85   89  
  86   90  #ifdef  __cplusplus
  87   91  }
  88   92  #endif
  89   93  
  90   94  #endif  /* _SYS_X_CALL_H */

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