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/* $OpenBSD: intr.h,v 1.9 2001/04/12 10:35:01 art Exp $ */
/* $NetBSD: intr.h,v 1.25 2000/05/23 05:12:56 thorpej Exp $ */
/*
* Copyright (c) 1997 Christopher G. Demetriou. All rights reserved.
* Copyright (c) 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#ifndef _ALPHA_INTR_H_
#define _ALPHA_INTR_H_
#include <sys/queue.h>
#include <machine/atomic.h>
#define IPL_NONE 0 /* disable only this interrupt */
#define IPL_BIO 1 /* disable block I/O interrupts */
#define IPL_NET 2 /* disable network interrupts */
#define IPL_TTY 3 /* disable terminal interrupts */
#define IPL_CLOCK 4 /* disable clock interrupts */
#define IPL_HIGH 5 /* disable all interrupts */
#define IPL_SERIAL 6 /* disable serial interrupts */
#define IST_UNUSABLE -1 /* interrupt cannot be used */
#define IST_NONE 0 /* none (dummy) */
#define IST_PULSE 1 /* pulsed */
#define IST_EDGE 2 /* edge-triggered */
#define IST_LEVEL 3 /* level-triggered */
#ifdef _KERNEL
/* IPL-lowering/restoring macros */
#define splx(s) \
((s) == ALPHA_PSL_IPL_0 ? spl0() : alpha_pal_swpipl(s))
#define spllowersoftclock() alpha_pal_swpipl(ALPHA_PSL_IPL_SOFT)
/* IPL-raising functions/macros */
static __inline int _splraise __P((int));
static __inline int
_splraise(s)
int s;
{
int cur = alpha_pal_rdps() & ALPHA_PSL_IPL_MASK;
return (s > cur ? alpha_pal_swpipl(s) : cur);
}
#define splsoft() _splraise(ALPHA_PSL_IPL_SOFT)
#define splsoftserial() splsoft()
#define splsoftclock() splsoft()
#define splsoftnet() splsoft()
#define splnet() _splraise(ALPHA_PSL_IPL_IO)
#define splbio() _splraise(ALPHA_PSL_IPL_IO)
#define splimp() _splraise(ALPHA_PSL_IPL_IO)
#define spltty() _splraise(ALPHA_PSL_IPL_IO)
#define splserial() _splraise(ALPHA_PSL_IPL_IO)
#define splclock() _splraise(ALPHA_PSL_IPL_CLOCK)
#define splstatclock() _splraise(ALPHA_PSL_IPL_CLOCK)
#define splhigh() _splraise(ALPHA_PSL_IPL_HIGH)
#define spllpt() spltty()
/*
* simulated software interrupt register
*/
extern u_int64_t ssir;
#define SIR_NET 0x1
#define SIR_CLOCK 0x2
#define SIR_SERIAL 0x4
#define setsoft(x) atomic_setbits_ulong(&ssir, (x))
#define setsoftnet() setsoft(SIR_NET)
#define setsoftclock() setsoft(SIR_CLOCK)
#define setsoftserial() setsoft(SIR_SERIAL)
/*
* Interprocessor interrupts. In order how we want them processed.
*/
#define ALPHA_IPI_HALT 0x0000000000000001UL
#define ALPHA_IPI_TBIA 0x0000000000000002UL
#define ALPHA_IPI_TBIAP 0x0000000000000004UL
#define ALPHA_IPI_SHOOTDOWN 0x0000000000000008UL
#define ALPHA_IPI_IMB 0x0000000000000010UL
#define ALPHA_IPI_AST 0x0000000000000020UL
#define ALPHA_NIPIS 6 /* must not exceed 64 */
typedef void (*ipifunc_t) __P((void));
extern ipifunc_t ipifuncs[ALPHA_NIPIS];
void alpha_send_ipi __P((unsigned long, unsigned long));
void alpha_broadcast_ipi __P((unsigned long));
/*
* Alpha shared-interrupt-line common code.
*/
struct alpha_shared_intrhand {
TAILQ_ENTRY(alpha_shared_intrhand)
ih_q;
struct alpha_shared_intr *ih_intrhead;
int (*ih_fn) __P((void *));
void *ih_arg;
int ih_level;
unsigned int ih_num;
};
struct alpha_shared_intr {
TAILQ_HEAD(,alpha_shared_intrhand)
intr_q;
void *intr_private;
int intr_sharetype;
int intr_dfltsharetype;
int intr_nstrays;
int intr_maxstrays;
};
#define ALPHA_SHARED_INTR_DISABLE(asi, num) \
((asi)[num].intr_maxstrays != 0 && \
(asi)[num].intr_nstrays == (asi)[num].intr_maxstrays)
struct alpha_shared_intr *alpha_shared_intr_alloc __P((unsigned int));
int alpha_shared_intr_dispatch __P((struct alpha_shared_intr *,
unsigned int));
void *alpha_shared_intr_establish __P((struct alpha_shared_intr *,
unsigned int, int, int, int (*)(void *), void *, const char *));
void alpha_shared_intr_disestablish __P((struct alpha_shared_intr *,
void *, const char *));
int alpha_shared_intr_get_sharetype __P((struct alpha_shared_intr *,
unsigned int));
int alpha_shared_intr_isactive __P((struct alpha_shared_intr *,
unsigned int));
void alpha_shared_intr_set_dfltsharetype __P((struct alpha_shared_intr *,
unsigned int, int));
void alpha_shared_intr_set_maxstrays __P((struct alpha_shared_intr *,
unsigned int, int));
void alpha_shared_intr_stray __P((struct alpha_shared_intr *, unsigned int,
const char *));
void alpha_shared_intr_set_private __P((struct alpha_shared_intr *,
unsigned int, void *));
void *alpha_shared_intr_get_private __P((struct alpha_shared_intr *,
unsigned int));
void set_iointr(void (*)(void *, unsigned long));
#endif /* _KERNEL */
#endif /* ! _ALPHA_INTR_H_ */
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