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|
/*===============================================================*\
| Project: RTEMS Haleakala BSP |
| * by Michael Hamel ADInstruments Ltd 2008 |
+-----------------------------------------------------------------+
| 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. |
| |
+-----------------------------------------------------------------+
| this file contains the irq controller handler |
\*===============================================================*/
#include <libcpu/spr.h>
#include <bsp/irq.h>
#include <bsp.h>
#include <bsp/vectors.h>
#include <rtems/bspIo.h>
#include <rtems/powerpc/powerpc.h>
/*
* default on/off function
*/
static void nop_func(void)
{
}
/*
* default isOn function
*/
static int not_connected(void)
{
return 0;
}
static rtems_irq_connect_data rtemsIrq[BSP_IRQ_NUMBER];
static rtems_irq_global_settings initial_config;
static rtems_irq_connect_data defaultIrq = {
.name = 0,
.hdl = NULL,
.handle = NULL,
.on = (rtems_irq_enable) nop_func,
.off = (rtems_irq_disable) nop_func,
.isOn = (rtems_irq_is_enabled) not_connected,
#ifdef BSP_SHARED_HANDLER_SUPPORT
.next_handler = NULL
#endif
};
static rtems_irq_prio irqPrioTable[BSP_IRQ_NUMBER]={
/*
* Processor exceptions handled as interrupts
*/
0
};
/*
* This code assumes the exceptions management setup has already
* been done. We just need to replace the exceptions that will
* be handled like interrupt. On mcp750/mpc750 and many PPC processors
* this means the decrementer exception and the external exception.
*/
void BSP_rtems_irq_mng_init(unsigned cpuId)
{
int i;
/*
* re-init the rtemsIrq table
*/
for (i = 0; i < BSP_IRQ_NUMBER; i++) {
rtemsIrq[i] = defaultIrq;
rtemsIrq[i].name = i;
}
/*
* Init initial Interrupt management config
*/
initial_config.irqNb = BSP_IRQ_NUMBER;
initial_config.defaultEntry = defaultIrq;
initial_config.irqHdlTbl = rtemsIrq;
initial_config.irqBase = BSP_LOWEST_OFFSET;
initial_config.irqPrioTbl = irqPrioTable;
if (!BSP_rtems_irq_mngt_set(&initial_config)) {
/*
* put something here that will show the failure...
*/
rtems_panic(
"Unable to initialize RTEMS interrupt management!!! System locked\n"
);
}
#ifdef TRACE_IRQ_INIT
printk("RTEMS IRQ management is now operational\n");
#endif
}
|
