187 lines
4.8 KiB
C
187 lines
4.8 KiB
C
/* $NetBSD: intr.h,v 1.30 2009/03/27 15:47:33 dyoung Exp $ */
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/* NetBSD intr.h,v 1.15 2004/10/31 10:39:34 yamt Exp */
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/*-
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* Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum, and by Jason R. Thorpe.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _XEN_INTR_H_
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#define _XEN_INTR_H_
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#include <machine/intrdefs.h>
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#ifndef _LOCORE
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#include <xen/xen.h>
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#include <xen/hypervisor.h>
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#include <xen/evtchn.h>
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#include <machine/cpu.h>
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#include <machine/pic.h>
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#include <sys/evcnt.h>
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#include "opt_xen.h"
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/*
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* Struct describing an event channel.
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*/
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struct evtsource {
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int ev_maxlevel; /* max. IPL for this source */
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uint32_t ev_imask; /* interrupt mask */
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struct intrhand *ev_handlers; /* handler chain */
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struct evcnt ev_evcnt; /* interrupt counter */
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char ev_evname[32]; /* event counter name */
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};
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/*
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* Structure describing an interrupt level. struct cpu_info has an array of
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* IPL_MAX of theses. The index in the array is equal to the stub number of
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* the stubcode as present in vector.s
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*/
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struct intrstub {
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#if 0
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void *ist_entry;
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#endif
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void *ist_recurse;
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void *ist_resume;
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};
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#ifdef XEN3
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/* for x86 compatibility */
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extern struct intrstub i8259_stubs[];
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extern struct intrstub ioapic_edge_stubs[];
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extern struct intrstub ioapic_level_stubs[];
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#endif
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struct iplsource {
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struct intrhand *ipl_handlers; /* handler chain */
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void *ipl_recurse; /* entry for spllower */
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void *ipl_resume; /* entry for doreti */
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struct lwp *ipl_lwp;
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u_long ipl_evt_mask1; /* pending events for this IPL */
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u_long ipl_evt_mask2[NR_EVENT_CHANNELS];
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};
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/*
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* Interrupt handler chains. These are linked in both the evtsource and
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* the iplsource.
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* The handler is called with its (single) argument.
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*/
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struct intrhand {
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int (*ih_fun)(void *);
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void *ih_arg;
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int ih_level;
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int (*ih_realfun)(void *);
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void *ih_realarg;
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struct intrhand *ih_ipl_next;
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struct intrhand *ih_evt_next;
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struct cpu_info *ih_cpu;
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};
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struct xen_intr_handle {
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int pirq; /* also contains the APIC_INT_* flags if NIOAPIC > 0 */
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int evtch;
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};
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extern struct intrstub xenev_stubs[];
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#define IUNMASK(ci,level) (ci)->ci_iunmask[(level)]
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extern void Xspllower(int);
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int splraise(int);
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void spllower(int);
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#define SPL_ASSERT_BELOW(x) KDASSERT(curcpu()->ci_ilevel < (x))
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/*
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* Miscellaneous
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*/
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#define spl0() spllower(IPL_NONE)
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#define splx(x) spllower(x)
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typedef uint8_t ipl_t;
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typedef struct {
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ipl_t _ipl;
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} ipl_cookie_t;
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static inline ipl_cookie_t
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makeiplcookie(ipl_t ipl)
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{
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return (ipl_cookie_t){._ipl = ipl};
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}
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static inline int
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splraiseipl(ipl_cookie_t icookie)
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{
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return splraise(icookie._ipl);
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}
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#include <sys/spl.h>
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/*
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* Stub declarations.
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*/
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struct cpu_info;
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struct pcibus_attach_args;
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#ifdef MULTIPROCESSOR
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int intr_biglock_wrapper(void *);
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#endif
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void intr_default_setup(void);
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int x86_nmi(void);
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void intr_calculatemasks(struct evtsource *);
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void *intr_establish(int, struct pic *, int, int, int, int (*)(void *), void *, bool);
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void intr_disestablish(struct intrhand *);
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const char *intr_string(int);
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void cpu_intr_init(struct cpu_info *);
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int xen_intr_map(int *, int);
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#ifdef INTRDEBUG
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void intr_printconfig(void);
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#endif
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int intr_find_mpmapping(int, int, struct xen_intr_handle *);
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struct pic *intr_findpic(int);
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void intr_add_pcibus(struct pcibus_attach_args *);
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int x86_send_ipi(struct cpu_info *, int);
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void x86_broadcast_ipi(int);
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void x86_multicast_ipi(int, int);
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#endif /* !_LOCORE */
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#endif /* _XEN_INTR_H_ */
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