186 lines
4.7 KiB
C
186 lines
4.7 KiB
C
/* $NetBSD: intr.h,v 1.29 2008/05/30 19:03:10 ad Exp $ */
|
|
/* NetBSD intr.h,v 1.15 2004/10/31 10:39:34 yamt Exp */
|
|
|
|
/*-
|
|
* Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Charles M. Hannum, and by Jason R. Thorpe.
|
|
*
|
|
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*/
|
|
|
|
#ifndef _XEN_INTR_H_
|
|
#define _XEN_INTR_H_
|
|
|
|
#include <machine/intrdefs.h>
|
|
|
|
#ifndef _LOCORE
|
|
#include <xen/xen.h>
|
|
#include <xen/hypervisor.h>
|
|
#include <xen/evtchn.h>
|
|
#include <machine/cpu.h>
|
|
#include <machine/pic.h>
|
|
|
|
#include "opt_xen.h"
|
|
|
|
/*
|
|
* Struct describing an event channel.
|
|
*/
|
|
|
|
struct evtsource {
|
|
int ev_maxlevel; /* max. IPL for this source */
|
|
uint32_t ev_imask; /* interrupt mask */
|
|
struct intrhand *ev_handlers; /* handler chain */
|
|
struct evcnt ev_evcnt; /* interrupt counter */
|
|
char ev_evname[32]; /* event counter name */
|
|
};
|
|
|
|
/*
|
|
* Structure describing an interrupt level. struct cpu_info has an array of
|
|
* IPL_MAX of theses. The index in the array is equal to the stub number of
|
|
* the stubcode as present in vector.s
|
|
*/
|
|
|
|
struct intrstub {
|
|
#if 0
|
|
void *ist_entry;
|
|
#endif
|
|
void *ist_recurse;
|
|
void *ist_resume;
|
|
};
|
|
|
|
#ifdef XEN3
|
|
/* for x86 compatibility */
|
|
extern struct intrstub i8259_stubs[];
|
|
extern struct intrstub ioapic_edge_stubs[];
|
|
extern struct intrstub ioapic_level_stubs[];
|
|
#endif
|
|
|
|
struct iplsource {
|
|
struct intrhand *ipl_handlers; /* handler chain */
|
|
void *ipl_recurse; /* entry for spllower */
|
|
void *ipl_resume; /* entry for doreti */
|
|
struct lwp *ipl_lwp;
|
|
u_long ipl_evt_mask1; /* pending events for this IPL */
|
|
u_long ipl_evt_mask2[NR_EVENT_CHANNELS];
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
* Interrupt handler chains. These are linked in both the evtsource and
|
|
* the iplsource.
|
|
* The handler is called with its (single) argument.
|
|
*/
|
|
|
|
struct intrhand {
|
|
int (*ih_fun)(void *);
|
|
void *ih_arg;
|
|
int ih_level;
|
|
int (*ih_realfun)(void *);
|
|
void *ih_realarg;
|
|
struct intrhand *ih_ipl_next;
|
|
struct intrhand *ih_evt_next;
|
|
struct cpu_info *ih_cpu;
|
|
};
|
|
|
|
struct xen_intr_handle {
|
|
int pirq; /* also contains the APIC_INT_* flags if NIOAPIC > 0 */
|
|
int evtch;
|
|
};
|
|
|
|
extern struct intrstub xenev_stubs[];
|
|
|
|
#define IUNMASK(ci,level) (ci)->ci_iunmask[(level)]
|
|
|
|
extern void Xspllower(int);
|
|
|
|
int splraise(int);
|
|
void spllower(int);
|
|
|
|
#define SPL_ASSERT_BELOW(x) KDASSERT(curcpu()->ci_ilevel < (x))
|
|
|
|
/*
|
|
* Miscellaneous
|
|
*/
|
|
#define spl0() spllower(IPL_NONE)
|
|
#define splx(x) spllower(x)
|
|
|
|
typedef uint8_t ipl_t;
|
|
typedef struct {
|
|
ipl_t _ipl;
|
|
} ipl_cookie_t;
|
|
|
|
static inline ipl_cookie_t
|
|
makeiplcookie(ipl_t ipl)
|
|
{
|
|
|
|
return (ipl_cookie_t){._ipl = ipl};
|
|
}
|
|
|
|
static inline int
|
|
splraiseipl(ipl_cookie_t icookie)
|
|
{
|
|
|
|
return splraise(icookie._ipl);
|
|
}
|
|
|
|
#include <sys/spl.h>
|
|
|
|
/*
|
|
* Stub declarations.
|
|
*/
|
|
|
|
struct cpu_info;
|
|
|
|
struct pcibus_attach_args;
|
|
|
|
#ifdef MULTIPROCESSOR
|
|
int intr_biglock_wrapper(void *);
|
|
#endif
|
|
|
|
void intr_default_setup(void);
|
|
int x86_nmi(void);
|
|
void intr_calculatemasks(struct evtsource *);
|
|
|
|
void *intr_establish(int, struct pic *, int, int, int, int (*)(void *), void *, bool);
|
|
void intr_disestablish(struct intrhand *);
|
|
const char *intr_string(int);
|
|
void cpu_intr_init(struct cpu_info *);
|
|
int xen_intr_map(int *, int);
|
|
#ifdef INTRDEBUG
|
|
void intr_printconfig(void);
|
|
#endif
|
|
int intr_find_mpmapping(int, int, struct xen_intr_handle *);
|
|
struct pic *intr_findpic(int);
|
|
void intr_add_pcibus(struct pcibus_attach_args *);
|
|
|
|
int x86_send_ipi(struct cpu_info *, int);
|
|
void x86_broadcast_ipi(int);
|
|
void x86_multicast_ipi(int, int);
|
|
|
|
#endif /* !_LOCORE */
|
|
|
|
#endif /* _XEN_INTR_H_ */
|