shared/shmdr/shmdr-intr.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*  void Shm_Cause_interrupt( node )
0004  *
0005  *  This routine is the shared memory driver routine which
0006  *  generates interrupts to other CPUs.
0007  *
0008  *  It uses the information placed in the node status control
0009  *  block by each node.  For example, when used with the Motorola
0010  *  MVME136 board, the MPCSR is used.
0011  *
0012  *  Input parameters:
0013  *    node          - destination of this packet (0 = broadcast)
0014  *
0015  *  Output parameters: NONE
0016  *
0017  *  COPYRIGHT (c) 1989-1999.
0018  *  On-Line Applications Research Corporation (OAR).
0019  *
0020  * Redistribution and use in source and binary forms, with or without
0021  * modification, are permitted provided that the following conditions
0022  * are met:
0023  * 1. Redistributions of source code must retain the above copyright
0024  *    notice, this list of conditions and the following disclaimer.
0025  * 2. Redistributions in binary form must reproduce the above copyright
0026  *    notice, this list of conditions and the following disclaimer in the
0027  *    documentation and/or other materials provided with the distribution.
0028  *
0029  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0030  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0031  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0032  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0033  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0034  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0035  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0036  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0037  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0038  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0039  * POSSIBILITY OF SUCH DAMAGE.
0040  */
0041
0042 #include <rtems.h>
0043 #include "shm_driver.h"
0044
0045 void Shm_Cause_interrupt(
0046   uint32_t   node
0047 )
0048 {
0049   Shm_Interrupt_information *intr;
0050   uint8_t    *u8;
0051   uint16_t   *u16;
0052   uint32_t   *u32;
0053   uint32_t    value;
0054
0055   intr = &Shm_Interrupt_table[node];
0056   value = intr->value;
0057
0058   switch ( intr->length ) {
0059     case NO_INTERRUPT:
0060        break;
0061     case BYTE:
0062       u8   = (uint8_t*)intr->address;
0063       *u8  = (uint8_t) value;
0064       break;
0065     case WORD:
0066       u16   = (uint16_t*)intr->address;
0067       *u16  = (uint16_t) value;
0068       break;
0069     case LONG:
0070       u32   = (uint32_t*)intr->address;
0071       *u32  = (uint32_t) value;
0072       break;
0073   }
0074 }