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/* $Id: pil.h,v 1.1.1.1 2004-04-15 03:00:57 phoenix 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 cli() 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 cli().

 *

 * 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

#ifndef __ASSEMBLY__

#define PIL_RESERVED(PIL)       ((PIL) == PIL_SMP_CALL_FUNC || \

                                 (PIL) == PIL_SMP_RECEIVE_SIGNAL || \

                                 (PIL) == PIL_SMP_CAPTURE)

#endif

#endif /* !(_SPARC64_PIL_H) */