source: rtems/bsps/powerpc/beatnik/irq/irq_init.c @ 99de42c

Last change on this file since 99de42c was 99de42c, checked in by Marçal Comajoan Cara <mcomajoancara@…>, on Dec 4, 2018 at 10:05:10 PM

Capitalize Rtems to RTEMS

  • Property mode set to 100644
File size: 2.6 KB
Line 
1/* irq_init.c
2 *
3 *  This file contains the implementation of rtems initialization
4 *  related to interrupt handling.
5 *
6 *  CopyRight (C) 1999 valette@crf.canon.fr
7 *
8 * Enhanced by Jay Kulpinski <jskulpin@eng01.gdds.com>
9 * to make it valid for MVME2300 Motorola boards.
10 *
11 * Modified by T. Straumann for the 'beatnik' BSP.
12 *
13 *  The license and distribution terms for this file may be
14 *  found in the file LICENSE in this distribution or at
15 *  http://www.rtems.org/license/LICENSE.
16 */
17
18#include <rtems.h>
19#include <bsp.h>
20#include <bsp/irq.h>
21#include <bsp/vectors.h>
22#include <rtems/bspIo.h>
23
24#if 0
25#include <libcpu/io.h>
26#include <libcpu/spr.h>
27#include <bsp/pci.h>
28#include <bsp/residual.h>
29#include <bsp/openpic.h>
30#include <bsp/irq.h>
31#include <bsp.h>
32#include <bsp/motorola.h>
33#endif
34
35/*
36#define SHOW_ISA_PCI_BRIDGE_SETTINGS
37*/
38
39extern unsigned int external_exception_vector_prolog_code_size[];
40extern void external_exception_vector_prolog_code(void);
41extern unsigned int decrementer_exception_vector_prolog_code_size[];
42extern void decrementer_exception_vector_prolog_code(void);
43
44/*
45 * default handler
46 */
47static void nop_func(void *arg){}
48
49static rtems_irq_connect_data           rtemsIrq[BSP_IRQ_NUMBER];
50static rtems_irq_global_settings    initial_config;
51static rtems_irq_prio                           rtemsPrioTbl[BSP_IRQ_NUMBER];
52static rtems_irq_connect_data           defaultIrq = {
53  name:   0,
54  hdl:    nop_func,
55  handle: 0,
56  on:     0,
57  off:    0,
58  isOn:   0
59};
60
61
62  /*
63   * This code assumes the exceptions management setup has already
64   * been done. We just need to replace the exceptions that will
65   * be handled like interrupt. On mcp750/mpc750 and many PPC processors
66   * this means the decrementer exception and the external exception.
67   */
68
69void BSP_rtems_irq_mng_init(unsigned cpuId)
70{
71int i;
72
73        /*
74         * First initialize the Interrupt management hardware
75         */
76
77        /*
78         * Initialize RTEMS management interrupt table
79         */
80
81        /*
82         * re-init the rtemsIrq table
83         */
84        for (i = BSP_LOWEST_OFFSET; i <= BSP_MAX_OFFSET; i++) {
85                rtemsIrq[i]      = defaultIrq;
86                rtemsIrq[i].name = i;
87                rtemsPrioTbl[i]  = BSP_IRQ_DEFAULT_PRIORITY;
88        }
89
90        /*
91         * Init initial Interrupt management config
92         */
93        initial_config.irqNb    = BSP_IRQ_NUMBER;
94        initial_config.defaultEntry = defaultIrq;
95        initial_config.irqHdlTbl        = rtemsIrq;
96        initial_config.irqBase  = BSP_LOWEST_OFFSET;
97        initial_config.irqPrioTbl       = rtemsPrioTbl;
98
99        if (!BSP_rtems_irq_mngt_set(&initial_config)) {
100                /*
101                 * put something here that will show the failure...
102                 */
103                rtems_panic("Unable to initialize RTEMS interrupt Management!!! System locked\n");
104        }
105
106#ifdef TRACE_IRQ_INIT 
107        printk("RTEMS IRQ management is now operationnal\n");
108#endif
109}
110
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