On 06/28/2013 04:12 PM, Paolo Minazzi wrote:
Hi to all
I have to disable completely interrupts on arm on xenomai 2.5.6
I have a small piece of code that no one must interrupt.
I have seen there are a lot of #define and I have tried all.
1) rthal_local_irq_save
2) local_irq_save_hw
3) rthal_irq_disable (this seems to work but I have to disable all irq
lines)
Nope. rthal_irq_disable() is the strict equivalent of
local_irq_disable() from a non-virtualized IRQ context. This masks out
interrupts at CPU level.
4) inline asm on cpsr register with mask 0x40 and 0x80
This may not be what you need, as this does not account for the
virtualized interrupt state the interrupt pipeline manages.
I have tried all, but the best way seems
#define my_local_irq_save(x) ((x) =
ipipe_test_and_stall_pipeline_head() & 1)
#define my_local_irq_restore(x) ipipe_restore_pipeline_head(x)
but sometimes seems not works.
Certainly it does work, always. The entire house is built on top of
this. You may want to check your test code again.
I only need the simple concept of local_irq_save and local_irq restore
of standard linux.
Is there something similar on xenomai ?
Over Xenomai 2.x, rthal_local_irq_save()/restore() is a wrapper to the
proper implementation, which depends on the underlying I-pipe code.
--
Philippe.
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