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/*-
* Copyright (c) 1998 Doug Rabson
* 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 AND CONTRIBUTORS ``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 CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_IPL_H_
#define _MACHINE_IPL_H_
#include <machine/cpu.h> /* for pal inlines */
/*
* Software interrupt bit numbers
*/
#define SWI_TTY 0
#define SWI_NET 1
#define SWI_CAMNET 2
#define SWI_CAMBIO 3
#define SWI_VM 4
#define SWI_CLOCK 5
#define SWI_TQ 6
#define NSWI 32
#define NHWI 0
extern u_int32_t ipending;
#define getcpl() (alpha_pal_rdps() & ALPHA_PSL_IPL_MASK)
#define SPLDOWN(name, pri) \
\
static __inline int name(void) \
{ \
int s; \
s = alpha_pal_swpipl(ALPHA_PSL_IPL_##pri); \
return s; \
}
SPLDOWN(splsoftclock, SOFT)
SPLDOWN(splsoft, SOFT)
#define SPLUP(name, pri) \
\
static __inline int name(void) \
{ \
int cpl = getcpl(); \
if (ALPHA_PSL_IPL_##pri > cpl) { \
int s = alpha_pal_swpipl(ALPHA_PSL_IPL_##pri); \
return s; \
} else \
return cpl; \
}
SPLUP(splsoftcam, SOFT)
SPLUP(splsoftnet, SOFT)
SPLUP(splsoftvm, SOFT)
SPLUP(splsofttq, SOFT)
SPLUP(splnet, IO)
SPLUP(splbio, IO)
SPLUP(splcam, IO)
SPLUP(splimp, IO)
SPLUP(spltty, IO)
SPLUP(splvm, IO)
SPLUP(splclock, CLOCK)
SPLUP(splstatclock, CLOCK)
SPLUP(splhigh, HIGH)
static __inline void
spl0(void)
{
if (ipending)
do_sir(); /* lowers ipl to SOFT */
alpha_pal_swpipl(ALPHA_PSL_IPL_0);
}
static __inline void
splx(int s)
{
if (s)
alpha_pal_swpipl(s);
else
spl0();
}
extern void setdelayed(void);
extern void setsofttty(void);
extern void setsoftnet(void);
extern void setsoftcamnet(void);
extern void setsoftcambio(void);
extern void setsoftvm(void);
extern void setsofttq(void);
extern void setsoftclock(void);
extern void schedsofttty(void);
extern void schedsoftnet(void);
extern void schedsoftcamnet(void);
extern void schedsoftcambio(void);
extern void schedsoftvm(void);
extern void schedsofttq(void);
extern void schedsoftclock(void);
#if 0
/* XXX bogus */
extern unsigned cpl; /* current priority level mask */
#endif
#endif /* !_MACHINE_MD_VAR_H_ */
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