forked from Imagelibrary/rtems
104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/* void Shm_Get_configuration( localnode, &shmcfg )
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*
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* This routine initializes, if necessary, and returns a pointer
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* to the Shared Memory Configuration Table for the MVME147.
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*
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* INPUT PARAMETERS:
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* localnode - local node number
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* shmcfg - address of pointer to SHM Config Table
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*
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* OUTPUT PARAMETERS:
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* *shmcfg - pointer to SHM Config Table
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*
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* NOTES: The SIGLP interrupt on the MVME147 is used as an interprocessor
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* interrupt.
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*
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* MVME147 port for TNI - Telecom Bretagne
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* by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr)
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* June 1996
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*/
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#include <bsp.h>
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#include <rtems.h>
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#include "shm_driver.h"
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#define INTERRUPT 1 /* MVME147 target supports both */
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#define POLLING 0 /* polling and interrupt modes */
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shm_config_table BSP_shm_cfgtbl;
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static uint32_t *BSP_int_address(void)
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{
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uint32_t id, offset;
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id = (uint32_t) vme_lcsr->gcsr_base_address;
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offset = (id << 4) & 0xF0;
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offset |= 0xffff0003; /* points to GCSR global 1 */
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return( (uint32_t * ) offset );
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}
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void Shm_Get_configuration(
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uint32_t localnode,
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shm_config_table **shmcfg
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)
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{
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/* A shared mem space has bee left between RAM_END and DRAM_END
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on the first node*/
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if (localnode == 1)
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BSP_shm_cfgtbl.base = (vol_u32 *) RAM_END;
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else
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BSP_shm_cfgtbl.base = (vol_u32 *) (DRAM_END + RAM_END);
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BSP_shm_cfgtbl.length = DRAM_END - RAM_END;
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BSP_shm_cfgtbl.format = SHM_BIG;
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BSP_shm_cfgtbl.cause_intr = Shm_Cause_interrupt;
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#ifdef NEUTRAL_BIG
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BSP_shm_cfgtbl.convert = NULL_CONVERT;
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#else
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BSP_shm_cfgtbl.convert = CPU_swap_u32;
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#endif
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#if (POLLING==1)
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BSP_shm_cfgtbl.poll_intr = POLLED_MODE;
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BSP_shm_cfgtbl.Intr.address = NO_INTERRUPT;
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BSP_shm_cfgtbl.Intr.value = NO_INTERRUPT;
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BSP_shm_cfgtbl.Intr.length = NO_INTERRUPT;
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#else
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BSP_shm_cfgtbl.poll_intr = INTR_MODE;
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BSP_shm_cfgtbl.Intr.address = BSP_int_address(); /* GCSR global 1 */
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BSP_shm_cfgtbl.Intr.value = 0x01; /* SIGLP */
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BSP_shm_cfgtbl.Intr.length = BYTE;
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#endif
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*shmcfg = &BSP_shm_cfgtbl;
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}
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