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 $ */
|
|
#ifndef _SPARC64_PIL_H
|
|
#define _SPARC64_PIL_H
|
|
|
|
/* To avoid some locking problems, we hard allocate certain PILs
|
|
* for SMP cross call messages that must do a etrap/rtrap.
|
|
*
|
|
* A local_irq_disable() does not block the cross call delivery, so
|
|
* when SMP locking is an issue we reschedule the event into a PIL
|
|
* interrupt which is blocked by local_irq_disable().
|
|
*
|
|
* In fact any XCALL which has to etrap/rtrap has a problem because
|
|
* it is difficult to prevent rtrap from running BH's, and that would
|
|
* need to be done if the XCALL arrived while %pil==15.
|
|
*/
|
|
#define PIL_SMP_CALL_FUNC 1
|
|
#define PIL_SMP_RECEIVE_SIGNAL 2
|
|
#define PIL_SMP_CAPTURE 3
|
|
#define PIL_SMP_CTX_NEW_VERSION 4
|
|
#define PIL_DEVICE_IRQ 5
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#define PIL_RESERVED(PIL) ((PIL) == PIL_SMP_CALL_FUNC || \
|
|
(PIL) == PIL_SMP_RECEIVE_SIGNAL || \
|
|
(PIL) == PIL_SMP_CAPTURE || \
|
|
(PIL) == PIL_SMP_CTX_NEW_VERSION)
|
|
#endif
|
|
|
|
#endif /* !(_SPARC64_PIL_H) */
|