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fd0504c321
This is the first in a series of cleanups that will hopefully
allow a seamless attempt at using the generic IRQ handling
infrastructure in the Linux kernel.
Define PIL_DEVICE_IRQ and vector all device interrupts through
there.
Get rid of the ugly pil0_dummy_{bucket,desc}, instead vector
the timer interrupt directly to a specific handler since the
timer interrupt is the only event that will be signaled on
PIL 14.
The irq_worklist is now in the per-cpu trap_block[].
Signed-off-by: David S. Miller <davem@davemloft.net>
30 lines
1003 B
C
30 lines
1003 B
C
/* $Id: pil.h,v 1.1 2002/01/23 11:27:36 davem Exp $ */
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#ifndef _SPARC64_PIL_H
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#define _SPARC64_PIL_H
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/* To avoid some locking problems, we hard allocate certain PILs
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* for SMP cross call messages that must do a etrap/rtrap.
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*
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* A local_irq_disable() does not block the cross call delivery, so
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* when SMP locking is an issue we reschedule the event into a PIL
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* interrupt which is blocked by local_irq_disable().
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*
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* In fact any XCALL which has to etrap/rtrap has a problem because
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* it is difficult to prevent rtrap from running BH's, and that would
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* need to be done if the XCALL arrived while %pil==15.
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*/
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#define PIL_SMP_CALL_FUNC 1
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#define PIL_SMP_RECEIVE_SIGNAL 2
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#define PIL_SMP_CAPTURE 3
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#define PIL_SMP_CTX_NEW_VERSION 4
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#define PIL_DEVICE_IRQ 5
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#ifndef __ASSEMBLY__
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#define PIL_RESERVED(PIL) ((PIL) == PIL_SMP_CALL_FUNC || \
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(PIL) == PIL_SMP_RECEIVE_SIGNAL || \
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(PIL) == PIL_SMP_CAPTURE || \
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(PIL) == PIL_SMP_CTX_NEW_VERSION)
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#endif
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#endif /* !(_SPARC64_PIL_H) */
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