psim/mpci/getcfg.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*  void Shm_Get_configuration( localnode, &shmcfg )
0004  *
0005  *  This routine initializes, if necessary, and returns a pointer
0006  *  to the Shared Memory Configuration Table for the PowerPC PSIM.
0007  *
0008  *  INPUT PARAMETERS:
0009  *    localnode - local node number
0010  *    shmcfg    - address of pointer to SHM Config Table
0011  *
0012  *  OUTPUT PARAMETERS:
0013  *    *shmcfg   - pointer to SHM Config Table
0014  *
0015  *  NOTES:  No interrupt support.
0016  *
0017  *  COPYRIGHT (c) 1989-2008.
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 <psim.h>
0044 #include "shm_driver.h"
0045
0046 #define INTERRUPT 0                   /* PSIM target supports only */
0047 #define POLLING   1                   /* polling mode. */
0048
0049 shm_config_table BSP_shm_cfgtbl;
0050
0051 void Shm_Get_configuration(
0052   uint32_t           localnode,
0053   shm_config_table **shmcfg
0054 )
0055 {
0056    BSP_shm_cfgtbl.base         = (uint32_t*)PSIM.SharedMemory;
0057    BSP_shm_cfgtbl.length       = sizeof(PSIM.SharedMemory);
0058    BSP_shm_cfgtbl.format       = SHM_BIG;
0059
0060    BSP_shm_cfgtbl.cause_intr   = Shm_Cause_interrupt;
0061
0062 #ifdef NEUTRAL_BIG
0063    BSP_shm_cfgtbl.convert      = NULL_CONVERT;
0064 #else
0065    BSP_shm_cfgtbl.convert      = CPU_swap_u32;
0066 #endif
0067
0068 #if (POLLING==1)
0069    BSP_shm_cfgtbl.poll_intr    = POLLED_MODE;
0070    BSP_shm_cfgtbl.Intr.address = NO_INTERRUPT;
0071    BSP_shm_cfgtbl.Intr.value   = NO_INTERRUPT;
0072    BSP_shm_cfgtbl.Intr.length  = NO_INTERRUPT;
0073 #else
0074    BSP_shm_cfgtbl.poll_intr    = INTR_MODE;
0075    BSP_shm_cfgtbl.Intr.address = 0;
0076    BSP_shm_cfgtbl.Intr.value   = 0;
0077    BSP_shm_cfgtbl.Intr.length  = BYTE;
0078 #endif
0079
0080    *shmcfg = &BSP_shm_cfgtbl;
0081
0082 }