diff options
| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2011-03-04 14:07:08 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2011-03-04 14:07:08 +0000 |
| commit | 7fce2ca5cd05b0f3540235f3e17e90381abb5eab (patch) | |
| tree | 6efc2c402b4632f7cf60f6cce125357ab7a4f797 /c | |
| parent | 631a092239d5b78dbf2832ba094c7c74b5c3c958 (diff) | |
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 'c')
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/ChangeLog | 8 | ||||
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/clock/ckinit.c | 16 | ||||
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/include/leon.h | 4 |
3 files changed, 22 insertions, 6 deletions
diff --git a/c/src/lib/libbsp/sparc/leon3/ChangeLog b/c/src/lib/libbsp/sparc/leon3/ChangeLog index 0c61fdeff8..4ef8f9ce0b 100644 --- a/c/src/lib/libbsp/sparc/leon3/ChangeLog +++ b/c/src/lib/libbsp/sparc/leon3/ChangeLog @@ -1,3 +1,11 @@ +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. + 2011-02-02 Ralf Corsépius <ralf.corsepius@rtems.org> * configure.ac: Require autoconf-2.68, automake-1.11.1. diff --git a/c/src/lib/libbsp/sparc/leon3/clock/ckinit.c b/c/src/lib/libbsp/sparc/leon3/clock/ckinit.c index 071265a30e..5bd41bb7cd 100644 --- a/c/src/lib/libbsp/sparc/leon3/clock/ckinit.c +++ b/c/src/lib/libbsp/sparc/leon3/clock/ckinit.c @@ -97,16 +97,24 @@ 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" diff --git a/c/src/lib/libbsp/sparc/leon3/include/leon.h b/c/src/lib/libbsp/sparc/leon3/include/leon.h index 93bc05462c..ee5ae30af8 100644 --- a/c/src/lib/libbsp/sparc/leon3/include/leon.h +++ b/c/src/lib/libbsp/sparc/leon3/include/leon.h @@ -245,11 +245,11 @@ extern int LEON3_Cpu_Index; } while (0) #define LEON_Is_interrupt_pending( _source ) \ - (LEON3_IrqCtrl_Regs.ipend & (1 << (_source))) + (LEON3_IrqCtrl_Regs->ipend & (1 << (_source))) #define LEON_Is_interrupt_masked( _source ) \ do {\ - (LEON3_IrqCtrl_Regs.mask[LEON3_Cpu_Index] & (1 << (_source))); \ + (LEON3_IrqCtrl_Regs->mask[LEON3_Cpu_Index] & (1 << (_source))); \ } while (0) |