diff options
| author | marcel <marcel@FreeBSD.org> | 2011-02-08 01:43:45 +0000 |
|---|---|---|
| committer | marcel <marcel@FreeBSD.org> | 2011-02-08 01:43:45 +0000 |
| commit | cc3f43e6b293dc0a254297a634a8e49d67f14df5 (patch) | |
| tree | af18283c507610a1b9e852af5827c8b0588b9ae5 /sys/arm | |
| parent | d78b15750703e8d8d71305f1941184c76f370b76 (diff) | |
| download | FreeBSD-src-cc3f43e6b293dc0a254297a634a8e49d67f14df5.zip FreeBSD-src-cc3f43e6b293dc0a254297a634a8e49d67f14df5.tar.gz | |
o Make sure to mask off timer1 interrupts. It's not necessarily
masked-off by the firmware.
o In DELAY(). Make sure we have an inner-loop body that the compiler
cannot eliminate. While timing does not have to be perfect, the
loops must be there to have at least some notion of delay.
Obtained from: Juniper Networks
Diffstat (limited to 'sys/arm')
| -rw-r--r-- | sys/arm/mv/timer.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/arm/mv/timer.c b/sys/arm/mv/timer.c index fb3b321..6d3de4e 100644 --- a/sys/arm/mv/timer.c +++ b/sys/arm/mv/timer.c @@ -150,6 +150,7 @@ mv_timer_attach(device_t dev) write_cpu_ctrl(BRIDGE_IRQ_CAUSE, irq_cause); irq_mask = read_cpu_ctrl(BRIDGE_IRQ_MASK); irq_mask |= IRQ_TIMER0_MASK; + irq_mask &= ~IRQ_TIMER1_MASK; write_cpu_ctrl(BRIDGE_IRQ_MASK, irq_mask); sc->et.et_name = "CPUTimer0"; @@ -229,7 +230,7 @@ DELAY(int usec) if (!timers_initialized) { for (; usec > 0; usec--) for (val = 100; val > 0; val--) - ; + __asm __volatile("nop" ::: "memory"); return; } |
