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/* $OpenBSD: intr.c,v 1.5 2009/06/02 21:38:10 drahn Exp $ */
/*
* Copyright (c) 1997 Per Fogelstrom, Opsycon AB and RTMX Inc, USA.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed under OpenBSD by
* Per Fogelstrom, Opsycon AB, Sweden for RTMX Inc, North Carolina USA.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/param.h>
#include <machine/cpu.h>
#include <machine/intr.h>
#include <machine/lock.h>
int ppc_dflt_splraise(int);
int ppc_dflt_spllower(int);
void ppc_dflt_splx(int);
/* provide a function for asm code to call */
#undef splraise
#undef spllower
#undef splx
int ppc_smask[IPL_NUM];
void
ppc_smask_init()
{
int i;
for (i = IPL_NONE; i <= IPL_HIGH; i++) {
ppc_smask[i] = 0;
#if 0
/* NOT YET */
if (i < IPL_SOFT)
ppc_smask[i] |= SI_TO_IRQBIT(SI_SOFT);
#endif
if (i < IPL_SOFTCLOCK)
ppc_smask[i] |= SI_TO_IRQBIT(SI_SOFTCLOCK);
if (i < IPL_SOFTNET)
ppc_smask[i] |= SI_TO_IRQBIT(SI_SOFTNET);
if (i < IPL_SOFTTTY)
ppc_smask[i] |= SI_TO_IRQBIT(SI_SOFTTTY);
}
}
int
splraise(int newcpl)
{
return ppc_intr_func.raise(newcpl);
}
int
spllower(int newcpl)
{
return ppc_intr_func.lower(newcpl);
}
void
splx(int newcpl)
{
ppc_intr_func.x(newcpl);
}
/*
* functions with 'default' behavior to use before the real
* interrupt controller attaches
*/
int
ppc_dflt_splraise(int newcpl)
{
struct cpu_info *ci = curcpu();
int oldcpl;
oldcpl = ci->ci_cpl;
if (newcpl < oldcpl)
newcpl = oldcpl;
ci->ci_cpl = newcpl;
return (oldcpl);
}
int
ppc_dflt_spllower(int newcpl)
{
struct cpu_info *ci = curcpu();
int oldcpl;
oldcpl = ci->ci_cpl;
splx(newcpl);
return (oldcpl);
}
void
ppc_dflt_splx(int newcpl)
{
struct cpu_info *ci = curcpu();
ci->ci_cpl = newcpl;
if (ci->ci_ipending & ppc_smask[newcpl])
do_pending_int();
}
struct ppc_intr_func ppc_intr_func =
{
ppc_dflt_splraise,
ppc_dflt_spllower,
ppc_dflt_splx
};
char *
ppc_intr_typename(int type)
{
switch (type) {
case IST_NONE :
return ("none");
case IST_PULSE:
return ("pulsed");
case IST_EDGE:
return ("edge-triggered");
case IST_LEVEL:
return ("level-triggered");
default:
return ("unknown");
}
}
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