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/**
* @file
*
* LEON3 Shared Memory Driver Support - Configuration
*/
/*
* COPYRIGHT (c) 1989-2012.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <rtems.h>
#include <bsp.h>
#include <shm_driver.h>
/* multiprocessor communications interface (MPCI) table */
extern rtems_mpci_entry Shm_Get_packet(
rtems_packet_prefix **
);
rtems_mpci_entry Shm_Initialization( void );
extern rtems_mpci_entry Shm_Receive_packet(
rtems_packet_prefix **
);
extern rtems_mpci_entry Shm_Return_packet(
rtems_packet_prefix *
);
extern rtems_mpci_entry Shm_Send_packet(
uint32_t,
rtems_packet_prefix *
);
/*
* configured if currently polling or interrupt driven
*
* NOTE: Code in mpisr.c is commented out. Fix when interrupt mode
* is added.
*/
#define INTERRUPT 0 /* XXX: */
#define POLLING 1 /* XXX: fix me -- is polling ONLY!!! */
/* Let user override this configuration by declaring this a weak variable */
shm_config_table BSP_shm_cfgtbl __attribute__((weak)) =
{
(vol_u32 *)0x40000000, /* USER OVERRIDABLE */
0x00001000, /* USER OVERRIDABLE */
SHM_BIG,
NULL_CONVERT,
INTR_MODE,
Shm_Cause_interrupt,
{
NULL,
1 << LEON3_MP_IRQ, /* USER OVERRIDABLE */
4,
},
};
void Shm_Get_configuration(
uint32_t localnode,
shm_config_table **shmcfg
)
{
int i;
unsigned int tmp;
BSP_shm_cfgtbl.format = SHM_BIG;
/*
* Override cause_intr or shm_isr if your target has
* special requirements.
*/
BSP_shm_cfgtbl.cause_intr = Shm_Cause_interrupt;
#ifdef NEUTRAL_BIG
BSP_shm_cfgtbl.convert = NULL_CONVERT;
#else
BSP_shm_cfgtbl.convert = CPU_swap_u32;
#endif
BSP_shm_cfgtbl.poll_intr = INTR_MODE;
BSP_shm_cfgtbl.Intr.address =
(vol_u32 *) &(LEON3_IrqCtrl_Regs->force[LEON3_Cpu_Index]);
if (BSP_shm_cfgtbl.Intr.value == 0)
BSP_shm_cfgtbl.Intr.value = 1 << LEON3_MP_IRQ; /* Use default MP-IRQ */
BSP_shm_cfgtbl.Intr.length = 4;
if (LEON3_Cpu_Index == 0) {
tmp = 0;
for (i = 1;
i < (rtems_configuration_get_user_multiprocessing_table())->maximum_nodes; i++)
tmp |= (1 << i);
LEON3_IrqCtrl_Regs->mpstat = tmp;
}
*shmcfg = &BSP_shm_cfgtbl;
}
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