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/* $OpenBSD: intr.h,v 1.22 2007/05/14 19:54:21 martin Exp $ */
/*
* Copyright (c) 2002-2004 Michael Shalayeff
* All rights reserved.
*
* 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.
*
* 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 OR HIS RELATIVES 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 MIND, 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.
*/
#ifndef _MACHINE_INTR_H_
#define _MACHINE_INTR_H_
#include <machine/psl.h>
#define CPU_NINTS 32
#define NIPL 16
#define IPL_NONE 0
#define IPL_SOFTCLOCK 1
#define IPL_SOFTNET 2
#define IPL_BIO 3
#define IPL_NET 4
#define IPL_SOFTTTY 5
#define IPL_TTY 6
#define IPL_VM 7
#define IPL_AUDIO 8
#define IPL_CLOCK 9
#define IPL_STATCLOCK 10
#define IPL_HIGH 10
#define IPL_NESTED 11 /* pseudo-level for sub-tables */
#define IST_NONE 0
#define IST_PULSE 1
#define IST_EDGE 2
#define IST_LEVEL 3
#if !defined(_LOCORE) && defined(_KERNEL)
#include <machine/atomic.h>
extern volatile int cpl;
extern volatile u_long ipending, imask[NIPL];
extern int astpending;
#ifdef DIAGNOSTIC
void splassert_fail(int, int, const char *);
extern int splassert_ctl;
void splassert_check(int, const char *);
#define splassert(__wantipl) do { \
if (__predict_false(splassert_ctl > 0)) { \
splassert_check(__wantipl, __func__); \
} \
} while (0)
#else
#define splassert(__wantipl) do { /* nada */ } while (0)
#endif /* DIAGNOSTIC */
void cpu_intr_init(void);
void cpu_intr(void *);
static __inline int
spllower(int ncpl)
{
register int ocpl asm("r28") = ncpl;
__asm __volatile("copy %0, %%arg0\n\tbreak %1, %2"
: "+r" (ocpl) : "i" (HPPA_BREAK_KERNEL), "i" (HPPA_BREAK_SPLLOWER)
: "r26", "memory");
return (ocpl);
}
static __inline int
splraise(int ncpl)
{
int ocpl = cpl;
if (ocpl < ncpl)
cpl = ncpl;
__asm __volatile ("sync" : "+r" (cpl));
return (ocpl);
}
static __inline void
splx(int ncpl)
{
(void)spllower(ncpl);
}
#define splsoftclock() splraise(IPL_SOFTCLOCK)
#define splsoftnet() splraise(IPL_SOFTNET)
#define splbio() splraise(IPL_BIO)
#define splnet() splraise(IPL_NET)
#define splsofttty() splraise(IPL_SOFTTTY)
#define spltty() splraise(IPL_TTY)
#define splvm() splraise(IPL_VM)
#define splaudio() splraise(IPL_AUDIO)
#define splclock() splraise(IPL_CLOCK)
#define splsched() splraise(IPL_SCHED)
#define splstatclock() splraise(IPL_STATCLOCK)
#define splhigh() splraise(IPL_HIGH)
#define spl0() spllower(IPL_NONE)
#define softintr(mask) atomic_setbits_long(&ipending, mask)
#define SOFTINT_MASK ((1 << (IPL_SOFTCLOCK - 1)) | \
(1 << (IPL_SOFTNET - 1)) | (1 << (IPL_SOFTTTY - 1)))
#define setsoftast() (astpending = 1)
#define setsoftclock() softintr(1 << (IPL_SOFTCLOCK - 1))
#define setsoftnet() softintr(1 << (IPL_SOFTNET - 1))
#define setsofttty() softintr(1 << (IPL_SOFTTTY - 1))
#endif /* !_LOCORE && _KERNEL */
#endif /* _MACHINE_INTR_H_ */
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