d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

o Make sure to mask off timer1 interrupts. It's not necessarily

Browse Source 
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
This commit is contained in:
Marcel Moolenaar 2011-02-08 01:43:45 +00:00
parent 13434232a6
commit 292e1140d1
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sys/arm/mv/timer.c
View File

@ -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;
}