NetBSD/sys/arch/amiga/include/psl.h

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/* $NetBSD: psl.h,v 1.11 1996/11/30 00:33:49 is Exp $ */
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#ifndef _MACHINE_PSL_H_
#define _MACHINE_PSL_H_
#include <m68k/psl.h>
#if defined(_KERNEL) && !defined(_LOCORE)
#if 0
#define _debug_spl(s) \
({ \
register int _spl_r; \
\
__asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
"&=d" (_spl_r) : "di" (s)); \
if ((_spl_r&PSL_IPL) > ((s)&PSL_IPL)&&((s)&PSL_IPL)!=PSL_IPL1) \
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printf ("%s:%d:spl(%d) ==> spl(%d)!!\n",__FILE__,__LINE__, \
((PSL_IPL&_spl_r)>>8), ((PSL_IPL&(s))>>8)); \
_spl_r; \
})
#else
/*
* Don't lower IPL below current IPL (unless new IPL is 6)
*/
#define _debug_spl(s) \
({ \
register int _spl_r; \
\
__asm __volatile ("clrl %0; movew sr,%0" : \
"&=d" (_spl_r)); \
if ((((s)&PSL_IPL) >= PSL_IPL6) || (_spl_r&PSL_IPL) < ((s)&PSL_IPL) || ((s)&PSL_IPL) <= PSL_IPL1) \
__asm __volatile ("movew %0,sr" : : "di" (s)); \
_spl_r; \
})
#endif
#define _spl_no_check(s) \
({ \
register int _spl_r; \
\
__asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
"&=d" (_spl_r) : "di" (s)); \
_spl_r; \
})
#if defined (DEBUGXX) /* No workee */
#define _spl _debug_spl
#else
#define _spl _spl_no_check
#endif
#define spl0() _spl(PSL_S|PSL_IPL0)
#define spl1() _spl(PSL_S|PSL_IPL1)
#define spl2() _spl(PSL_S|PSL_IPL2)
#define spl3() _spl(PSL_S|PSL_IPL3)
#define spl4() _spl(PSL_S|PSL_IPL4)
#define spl5() _spl(PSL_S|PSL_IPL5)
#define spl6() _spl(PSL_S|PSL_IPL6)
#define spl7() _spl(PSL_S|PSL_IPL7)
#define splnone() spl0()
#define splsoftclock() spl1()
#define splsoftnet() spl1()
#define splbio() spl3()
#define splnet() spl3()
/*
* spltty hack, idea by Jason Thorpe.
* drivers which need it (at the present only drcom) raise the variable to
* spl5 (the idea being that only ser.c really wants it below 5, and ser
* and drcom will never be present at the same time).
*
* XXX ttyspl is statically initialized in drcom.c at the moment; should
* be some driver independent file.
*
* XXX should ttyspl be volatile? I think not; it is intended to be set only
* during xxx_attach() time, and will be used only later.
* -is
*/
extern u_int16_t amiga_ttyspl;
#define spltty() _spl(amiga_ttyspl)
#define splimp() spltty() /* XXX for the full story, see i386 */
#ifndef LEV6_DEFER
#define splclock() spl6()
#define splstatclock() spl6()
#define splvm() spl6()
#define splhigh() spl7()
#define splsched() spl7()
#else
#define splclock() spl4()
#define splstatclock() spl4()
#define splvm() spl4()
#define splhigh() spl4()
#define splsched() spl4()
#endif
#define splx(s) _spl_no_check(s)
#endif /* KERNEL && !_LOCORE */
#endif /* _MACHINE_PSL_H_ */