xref: /netbsd-src/sys/arch/xen/include/intr.h (revision ff4bde105648fdd295a51ae5a400c4e26627a7b1)

/*	$NetBSD: intr.h,v 1.60 2022/09/07 00:40:19 knakahara 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 <xen/intrdefs.h>

#ifndef _LOCORE
#include <xen/include/public/xen.h>
#include <xen/include/public/event_channel.h>
#include <x86/intr.h>
#include <xen/xen.h>
#include <xen/hypervisor.h>
#include <machine/pic.h>
#include <sys/evcnt.h>

#include "opt_xen.h"


struct cpu_info;
/*
 * Struct describing an event channel.
 */

struct evtsource {
	int ev_maxlevel;		/* max. IPL for this source */
	uint64_t ev_imask;		/* interrupt mask */
	struct intrhand *ev_handlers;	/* handler chain */
	struct evcnt ev_evcnt;		/* interrupt counter */
	struct cpu_info *ev_cpu;        /* cpu on which this event is bound */
	char ev_intrname[INTRIDBUF];	/* interrupt string */
	char ev_xname[INTRDEVNAMEBUF];	/* handler device list */
	struct intrsource *ev_isl;	/* entry in intr sources list */
};

extern struct intrstub xenev_stubs[];
extern short irq2port[NR_EVENT_CHANNELS]; /* actually port + 1, so that 0 is invaid */

#ifdef MULTIPROCESSOR
int xen_intr_biglock_wrapper(void *);
#endif

#if defined(DOM0OPS) || NPCI > 0
int xen_pic_to_gsi(struct pic *, int);
int xen_map_msi_pirq(struct pic *, int);
int xen_map_msix_pirq(struct pic *, int);
void xen_pci_msi_release(struct pic *, int);
#endif /* defined(DOM0OPS) || NPCI > 0 */

#ifdef MULTIPROCESSOR
void xen_ipi_init(void);
int xen_send_ipi(struct cpu_info *, uint32_t);
void xen_broadcast_ipi(uint32_t);
#else
#define xen_ipi_init(_1) ((void) 0) /* nothing */
#define xen_send_ipi(_i1, _i2) (0) /* nothing */
#define xen_broadcast_ipi(_i1) ((void) 0) /* nothing */
#endif /* MULTIPROCESSOR */

void *xen_intr_establish_xname(int, struct pic *, int, int, int, int (*)(void *),
    void *, bool, const char *);
void *xen_intr_establish(int, struct pic *, int, int, int, int (*)(void *),
    void *, bool);
void xen_intr_mask(struct intrhand *);
void xen_intr_unmask(struct intrhand *);
void xen_intr_disestablish(struct intrhand *);

struct intrsource *xen_intr_allocate_io_intrsource(const char *);
void xen_intr_free_io_intrsource(const char *);

#endif /* !_LOCORE */

#endif /* _XEN_INTR_H_ */