/*      $OpenBSD: i82093var.h,v 1.8 2025/09/05 16:57:48 kettenis Exp $  */
/* $NetBSD: i82093var.h,v 1.1 2003/02/26 21:26:10 fvdl Exp $ */

/*-
 * Copyright (c) 2000 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by RedBack Networks Inc.
 *
 * Author: Bill Sommerfeld
 *
 * 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 _MACHINE_I82093VAR_H_
#define _MACHINE_I82093VAR_H_

#include <machine/apicvar.h>

struct ioapic_pin {
        struct ioapic_pin       *ip_next;       /* next pin on this vector */
        struct mp_intr_map      *ip_map;
        int                     ip_vector;      /* IDT vector */
        int                     ip_type;
        struct cpu_info         *ip_cpu;        /* target CPU */
};

struct ioapic_softc {
        struct pic              sc_pic;
        struct ioapic_softc     *sc_next;
        int                     sc_apicid;
        int                     sc_apic_vers;
        int                     sc_apic_vecbase; /* global int base if ACPI */
        int                     sc_apic_sz;     /* apic size*/
        int                     sc_flags;
        bus_space_tag_t         sc_memt;
        bus_space_handle_t      sc_memh;
        struct ioapic_pin       *sc_pins;       /* sc_apic_sz entries */
};      

/*
 * MP: intr_handle_t is bitfielded.
 * ih&0xff -> legacy irq number.
 * ih&0x10000000 -> if 0, old-style isa irq; if 1, routed via ioapic.
 * (ih&0xff0000)>>16 -> ioapic id.
 * (ih&0x00ff00)>>8 -> ioapic pin.
 */

#define APIC_INT_VIA_APIC       0x10000000
#define APIC_INT_VIA_MSG        0x20000000
#define APIC_INT_VIA_MSGX       0x40000000
#define APIC_INT_APIC_MASK      0x00ff0000
#define APIC_INT_APIC_SHIFT     16
#define APIC_INT_PIN_MASK       0x0000ff00
#define APIC_INT_PIN_SHIFT      8

#define APIC_IRQ_APIC(x) ((x & APIC_INT_APIC_MASK) >> APIC_INT_APIC_SHIFT)
#define APIC_IRQ_PIN(x) ((x & APIC_INT_PIN_MASK) >> APIC_INT_PIN_SHIFT)
#define APIC_IRQ_ISLEGACY(x) (!((x) & APIC_INT_VIA_APIC))
#define APIC_IRQ_LEGACY_IRQ(x) ((x) & 0xff)

void ioapic_print_redir(struct ioapic_softc *, char *, int);
struct ioapic_softc *ioapic_find(int);
struct ioapic_softc *ioapic_find_bybase(int);

void ioapic_enable(void);

extern int ioapic_bsp_id;
extern int nioapics;
extern struct ioapic_softc *ioapics;

#endif /* !_MACHINE_I82093VAR_H_ */