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i82093var.h revision 1.10 
      1 /* $NetBSD: i82093var.h,v 1.10 2008/07/03 15:44:19 drochner Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by RedBack Networks Inc.
      9  *
     10  * Author: Bill Sommerfeld
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     23  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     31  * POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #ifndef _X86_I82093VAR_H_
     35 #define _X86_I82093VAR_H_
     36 
     37 #include <machine/apicvar.h>
     38 
     39 struct ioapic_pin
     40 {
     41 	struct ioapic_pin	*ip_next;	/* next pin on this vector */
     42 	struct mp_intr_map 	*ip_map;
     43 	int			ip_vector;	/* IDT vector */
     44 	int			ip_type;
     45 	struct cpu_info		*ip_cpu;	/* target CPU */
     46 };
     47 
     48 struct ioapic_softc {
     49 	device_t		sc_dev;
     50 	struct pic		sc_pic;
     51 	struct ioapic_softc	*sc_next;
     52 	int			sc_apicid;
     53 	int			sc_apic_vers;
     54 	int			sc_apic_vecbase; /* global int base if ACPI */
     55 	int			sc_apic_sz;	/* apic size*/
     56 	int			sc_flags;
     57 	paddr_t			sc_pa;		/* PA of ioapic */
     58 	volatile uint32_t	*sc_reg;	/* KVA of ioapic addr */
     59 	volatile uint32_t	*sc_data;	/* KVA of ioapic data */
     60 	struct ioapic_pin	*sc_pins;	/* sc_apic_sz entries */
     61 };
     62 
     63 /*
     64  * MP: intr_handle_t is bitfielded.
     65  * ih&0xff -> legacy irq number.
     66  * ih&0x10000000 -> if 0, old-style isa irq; if 1, routed via ioapic.
     67  * (ih&0xff0000)>>16 -> ioapic id.
     68  * (ih&0x00ff00)>>8 -> ioapic pin.
     69  */
     70 
     71 #define APIC_INT_VIA_APIC	0x10000000
     72 #define APIC_INT_APIC_MASK	0x00ff0000
     73 #define APIC_INT_APIC_SHIFT	16
     74 #define APIC_INT_PIN_MASK	0x0000ff00
     75 #define APIC_INT_PIN_SHIFT	8
     76 
     77 #define APIC_IRQ_APIC(x) ((x & APIC_INT_APIC_MASK) >> APIC_INT_APIC_SHIFT)
     78 #define APIC_IRQ_PIN(x) ((x & APIC_INT_PIN_MASK) >> APIC_INT_PIN_SHIFT)
     79 #define APIC_IRQ_ISLEGACY(x) (!((x) & APIC_INT_VIA_APIC))
     80 #define APIC_IRQ_LEGACY_IRQ(x) ((x) & 0xff)
     81 
     82 void ioapic_print_redir(struct ioapic_softc *, const char *, int);
     83 void ioapic_format_redir(char *, const char *, int, uint32_t, uint32_t);
     84 struct ioapic_softc *ioapic_find(int);
     85 struct ioapic_softc *ioapic_find_bybase(int);
     86 
     87 void ioapic_enable(void);
     88 void ioapic_reenable(void);
     89 
     90 extern int nioapics;
     91 extern struct ioapic_softc *ioapics;
     92 
     93 #endif /* !_X86_I82093VAR_H_ */
     94