blob: d1fd075b01fe0097f3901368714540e4af4fe76d (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/**
* @file
* @brief mbx8xx Clock Tick connection code.
*/
/*
* COPYRIGHT (c) 1989-1997.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may in
* the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*
* Modified to support the MPC750.
* Modifications Copyright (c) 1999 Eric Valette valette@crf.canon.fr
*/
#include <bsp.h>
#include <bsp/irq.h>
#include <rtems/bspIo.h>
extern void clockOn(void*);
extern void clockOff (void*);
extern int clockIsOn(void*);
extern void Clock_isr(void*);
static rtems_irq_connect_data clockIrqData = {
BSP_PERIODIC_TIMER,
(rtems_irq_hdl)Clock_isr,
0,
(rtems_irq_enable)clockOn,
(rtems_irq_disable)clockOff,
(rtems_irq_is_enabled)clockIsOn
};
/*
* Prototypes
*/
int BSP_get_clock_irq_level(void);
int BSP_connect_clock_handler(rtems_irq_hdl hdl);
int BSP_disconnect_clock_handler(void);
int BSP_get_clock_irq_level(void)
{
/*
* Caution: if you change this, you must change the
* definition of BSP_PERIODIC_TIMER accordingly
*/
return 6;
}
int BSP_disconnect_clock_handler(void)
{
if (!BSP_get_current_rtems_irq_handler(&clockIrqData)) {
printk("Unable to stop system clock\n");
rtems_fatal_error_occurred(1);
}
return BSP_remove_rtems_irq_handler (&clockIrqData);
}
int BSP_connect_clock_handler(rtems_irq_hdl hdl)
{
if (!BSP_get_current_rtems_irq_handler(&clockIrqData)) {
printk("Unable to get system clock handler\n");
rtems_fatal_error_occurred(1);
}
if (!BSP_remove_rtems_irq_handler(&clockIrqData)) {
printk("Unable to remove current system clock handler\n");
rtems_fatal_error_occurred(1);
}
/*
* Reinit structure
*/
clockIrqData.name = BSP_PERIODIC_TIMER;
clockIrqData.hdl = (rtems_irq_hdl) hdl;
clockIrqData.on = (rtems_irq_enable)clockOn;
clockIrqData.off = (rtems_irq_enable)clockOff;
clockIrqData.isOn = (rtems_irq_is_enabled)clockIsOn;
return BSP_install_rtems_irq_handler (&clockIrqData);
}
|
