diff options
| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2011-03-04 14:06:54 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2011-03-04 14:06:54 +0000 |
| commit | b3559ee9f5b7b490568039dabc72aee5fe75b8e0 (patch) | |
| tree | cc59c220b2fee2c9d479102f3eee55e2b0866a13 /c/src/lib/libbsp/sparc/leon3/clock/ckinit.c | |
| parent | 2011-03-04 Joel Sherrill <joel.sherrilL@OARcorp.com> (diff) | |
| download | rtems-b3559ee9f5b7b490568039dabc72aee5fe75b8e0.tar.bz2 | |
2011-03-04 Joel Sherrill <joel.sherrilL@OARcorp.com>
PR 1748/bsps
* clock/ckinit.c, include/leon.h: When the clock tick generates an
interrupt WHILE we have interrupts disabled doing a get TOD or
uptime, the get nanoseconds handler was returning a bogusly large
number.
Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/clock/ckinit.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/c/src/lib/libbsp/sparc/leon3/clock/ckinit.c b/c/src/lib/libbsp/sparc/leon3/clock/ckinit.c index 071265a30e..86a968fea8 100644 --- a/c/src/lib/libbsp/sparc/leon3/clock/ckinit.c +++ b/c/src/lib/libbsp/sparc/leon3/clock/ckinit.c @@ -97,16 +97,23 @@ static int clkirq; uint32_t bsp_clock_nanoseconds_since_last_tick(void) { uint32_t clicks; + uint32_t usecs; + if ( !LEON3_Timer_Regs ) return 0; clicks = LEON3_Timer_Regs->timer[0].value; - /* Down counter */ - return (uint32_t) - (rtems_configuration_get_microseconds_per_tick() - clicks) * 1000; + if ( LEON_Is_interrupt_pending( clkirq ) ) { + clicks = LEON3_Timer_Regs->timer[0].value; + usecs = (2*rtems_configuration_get_microseconds_per_tick() - clicks); + } else { + usecs = (rtems_configuration_get_microseconds_per_tick() - clicks); + } + return usecs * 1000; } -#define Clock_driver_nanoseconds_since_last_tick bsp_clock_nanoseconds_since_last_tick +#define Clock_driver_nanoseconds_since_last_tick \ + bsp_clock_nanoseconds_since_last_tick #include "../../../shared/clockdrv_shell.h" |