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2005-05-20 Jennifer Averett <jennifer@OARcorp.com>

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PR 702/bsps
	* include/tm27.h: Add better tm27.h support. Uses decrementer register
	interrupt -- copied from psim.
This commit is contained in:
Joel Sherrill
2005-05-20 19:22:26 +00:00
parent 5c1af4caf0
commit 266a5c92a8
2 changed files with 43 additions and 5 deletions
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6
c/src/lib/libbsp/powerpc/mvme5500/ChangeLog
View File

@@ -1,3 +1,9 @@
2005-05-20 Jennifer Averett <jennifer@OARcorp.com>
PR 702/bsps
* include/tm27.h: Add better tm27.h support. Uses decrementer register
interrupt -- copied from psim.
2005-05-17 Jennifer Averett <jennifer.averett@oarcorp.com>
* irq/GT64260Int.c, irq/irq.c, irq/irq.h: Modified to use rtems/irq.h.

42
c/src/lib/libbsp/powerpc/mvme5500/include/tm27.h
View File

@@ -15,18 +15,50 @@
#ifndef __tm27_h
#define __tm27_h
#include <bsp/irq.h>
/*
* Stuff for Time Test 27
*/
#define MUST_WAIT_FOR_INTERRUPT 0
#define MUST_WAIT_FOR_INTERRUPT 1
#define Install_tm27_vector( handler ) /* empty */
void nullFunc() {}
static rtems_irq_connect_data clockIrqData = {BSP_DECREMENTER,
0,
(rtems_irq_enable)nullFunc,
(rtems_irq_disable)nullFunc,
(rtems_irq_is_enabled) nullFunc};
#define Cause_tm27_intr() /* empty */
void Install_tm27_vector(void (*_handler)())
{
clockIrqData.hdl = _handler;
if (!BSP_install_rtems_irq_handler (&clockIrqData)) {
printk("Error installing clock interrupt handler!\n");
rtems_fatal_error_occurred(1);
}
}
#define Clear_tm27_intr() /* empty */
#define Cause_tm27_intr() \
do { \
uint32_t _clicks = 1; \
asm volatile( "mtdec %0" : "=r" ((_clicks)) : "r" ((_clicks)) ); \
} while (0)
#define Lower_tm27_intr() /* empty */
#define Clear_tm27_intr() \
do { \
uint32_t _clicks = 0xffffffff; \
asm volatile( "mtdec %0" : "=r" ((_clicks)) : "r" ((_clicks)) ); \
} while (0)
#define Lower_tm27_intr() \
do { \
uint32_t _msr = 0; \
_ISR_Set_level( 0 ); \
asm volatile( "mfmsr %0 ;" : "=r" (_msr) : "r" (_msr) ); \
_msr |= 0x8002; \
asm volatile( "mtmsr %0 ;" : "=r" (_msr) : "r" (_msr) ); \
} while (0)
#endif