sys/arch/x86/include/i82093var.h

   1 /* $NetBSD: i82093var.h,v 1.12 2012/06/15 13:55:22 yamt 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 <sys/device.h>
  38 #include <machine/apicvar.h>
  39
  40 struct ioapic_pin
  41 {
  42         struct ioapic_pin       *ip_next;       /* next pin on this vector */
  43         struct mp_intr_map      *ip_map;
  44         int                     ip_vector;      /* IDT vector */
  45         int                     ip_type;
  46         struct cpu_info         *ip_cpu;        /* target CPU */
  47 };
  48
  49 struct ioapic_softc {
  50         device_t                sc_dev;
  51         struct pic              sc_pic;
  52         struct ioapic_softc     *sc_next;
  53         int                     sc_apicid;
  54         int                     sc_apic_vers;
  55         int                     sc_apic_vecbase; /* global int base if ACPI */
  56         int                     sc_apic_sz;     /* apic size*/
  57         int                     sc_flags;
  58         paddr_t                 sc_pa;          /* PA of ioapic */
  59         volatile uint32_t       *sc_reg;        /* KVA of ioapic addr */
  60         volatile uint32_t       *sc_data;       /* KVA of ioapic data */
  61         struct ioapic_pin       *sc_pins;       /* sc_apic_sz entries */
  62 };
  63
  64 /*
  65  * MP: intr_handle_t is bitfielded.
  66  * ih&0xff -> legacy irq number.
  67  * ih&0x10000000 -> if 0, old-style isa irq; if 1, routed via ioapic.
  68  * (ih&0xff0000)>>16 -> ioapic id.
  69  * (ih&0x00ff00)>>8 -> ioapic pin.
  70  *
  71  * 0x80000000 is used by pci_intr_machdep.c for MPSAFE_MASK
  72  */
  73
  74 #define APIC_INT_VIA_APIC       0x10000000
  75 #define APIC_INT_APIC_MASK      0x00ff0000
  76 #define APIC_INT_APIC_SHIFT     16
  77 #define APIC_INT_PIN_MASK       0x0000ff00
  78 #define APIC_INT_PIN_SHIFT      8
  79
  80 #define APIC_IRQ_APIC(x) ((x & APIC_INT_APIC_MASK) >> APIC_INT_APIC_SHIFT)
  81 #define APIC_IRQ_PIN(x) ((x & APIC_INT_PIN_MASK) >> APIC_INT_PIN_SHIFT)
  82 #define APIC_IRQ_ISLEGACY(x) (!((x) & APIC_INT_VIA_APIC))
  83 #define APIC_IRQ_LEGACY_IRQ(x) ((x) & 0xff)
  84
  85 void ioapic_print_redir(struct ioapic_softc *, const char *, int);
  86 void ioapic_format_redir(char *, const char *, int, uint32_t, uint32_t);
  87 struct ioapic_softc *ioapic_find(int);
  88 struct ioapic_softc *ioapic_find_bybase(int);
  89
  90 void ioapic_enable(void);
  91 void ioapic_reenable(void);
  92
  93 extern int nioapics;
  94 extern struct ioapic_softc *ioapics;
  95
  96 #endif /* !_X86_I82093VAR_H_ */