forked from Imagelibrary/rtems
eebecd09fa
Add a default implementation which clears the attributes to zero and just returns RTEMS_SUCCESSFUL for valid parameters. Update #3269.
157 lines
3.8 KiB
C
157 lines
3.8 KiB
C
/*
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* This file contains the implementation of rtems initialization
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* related to interrupt handling
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*/
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/*
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* Copyright (C) 1999 valette@crf.canon.fr
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*
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* Enhanced by Jay Kulpinski <jskulpin@eng01.gdds.com>
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* to make it valid for MVME2300 Motorola boards.
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#include <libcpu/io.h>
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#include <libcpu/spr.h>
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#include <bsp/irq.h>
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#include <bsp.h>
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#include <psim.h>
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#include <bsp/vectors.h>
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#include <rtems/bspIo.h>
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#include <bsp/openpic.h>
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#include <bsp/irq-generic.h>
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static rtems_irq_connect_data rtemsIrq[BSP_IRQ_NUMBER];
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static rtems_irq_global_settings initial_config;
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static rtems_irq_connect_data defaultIrq = {
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/* vectorIdex, hdl , handle , on , off , isOn */
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0, NULL, NULL , NULL, NULL, NULL
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};
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static rtems_irq_prio irqPrioTable[BSP_IRQ_NUMBER]={
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/*
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* Processor exceptions handled as interrupts
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*/
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0
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};
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/*
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* This code assumes the exceptions management setup has already
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* been done. We just need to replace the exceptions that will
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* be handled like interrupt. On mcp750/mpc750 and many PPC processors
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* this means the decrementer exception and the external exception.
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*/
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void BSP_rtems_irq_mng_init(unsigned cpuId)
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{
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int i;
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/*
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* First initialize the Interrupt management hardware
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*/
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OpenPIC = (void*)PSIM.OpenPIC;
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openpic_init(1,0,0,16,0,0);
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/*
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* Initialize RTEMS management interrupt table
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*/
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/*
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* re-init the rtemsIrq table
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*/
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for (i = 0; i < BSP_IRQ_NUMBER; i++) {
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rtemsIrq[i] = defaultIrq;
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rtemsIrq[i].name = i;
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}
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/*
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* Init initial Interrupt management config
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*/
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initial_config.irqNb = BSP_IRQ_NUMBER;
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initial_config.defaultEntry = defaultIrq;
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initial_config.irqHdlTbl = rtemsIrq;
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initial_config.irqBase = BSP_LOWEST_OFFSET;
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initial_config.irqPrioTbl = irqPrioTable;
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for (i = BSP_PCI_IRQ_LOWEST_OFFSET; i< BSP_PCI_IRQ_NUMBER; i++ ) {
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irqPrioTable[i] = 8;
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}
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if (!BSP_rtems_irq_mngt_set(&initial_config)) {
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/*
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* put something here that will show the failure...
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*/
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rtems_panic(
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"Unable to initialize RTEMS interrupt Management!!! System locked\n"
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);
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}
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#ifdef TRACE_IRQ_INIT
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printk("RTEMS IRQ management is now operationnal\n");
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#endif
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}
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static int psim_exception_handler(
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BSP_Exception_frame *frame,
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unsigned exception_number
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)
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{
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rtems_panic("Unexpected interrupt occured");
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return 0;
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}
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/*
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* functions to enable/disable a source at the ipic
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*/
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rtems_status_code bsp_interrupt_get_attributes(
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rtems_vector_number vector,
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rtems_interrupt_attributes *attributes
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)
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{
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return RTEMS_SUCCESSFUL;
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}
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rtems_status_code bsp_interrupt_raise(rtems_vector_number vector)
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{
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bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
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return RTEMS_UNSATISFIED;
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}
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rtems_status_code bsp_interrupt_clear(rtems_vector_number vector)
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{
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bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
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return RTEMS_UNSATISFIED;
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}
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rtems_status_code bsp_interrupt_vector_is_enabled(
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rtems_vector_number vector,
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bool *enabled
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)
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{
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bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
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bsp_interrupt_assert(enabled != NULL);
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*enabled = false;
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return RTEMS_UNSATISFIED;
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}
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void bsp_interrupt_vector_enable( rtems_vector_number irqnum)
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{
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/* FIXME: do something */
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bsp_interrupt_assert(bsp_interrupt_is_valid_vector(irqnum));
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}
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void bsp_interrupt_vector_disable( rtems_vector_number irqnum)
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{
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/* FIXME: do something */
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bsp_interrupt_assert(bsp_interrupt_is_valid_vector(irqnum));
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}
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rtems_status_code bsp_interrupt_facility_initialize(void)
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{
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/* Install exception handler */
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if (ppc_exc_set_handler( ASM_EXT_VECTOR, psim_exception_handler)) {
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return RTEMS_IO_ERROR;
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}
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return RTEMS_SUCCESSFUL;
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}
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