fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-x86 / io_apic_64.h
blobd9f2e54324d508729e88c2195034937fc2e185b9
1 #ifndef __ASM_IO_APIC_H
2 #define __ASM_IO_APIC_H
4 #include <asm/types.h>
5 #include <asm/mpspec.h>
6 #include <asm/apicdef.h>
8 /*
9 * Intel IO-APIC support for SMP and UP systems.
11 * Copyright (C) 1997, 1998, 1999, 2000 Ingo Molnar
14 #define APIC_MISMATCH_DEBUG
17 * The structure of the IO-APIC:
19 union IO_APIC_reg_00 {
20 u32 raw;
21 struct {
22 u32 __reserved_2 : 14,
23 LTS : 1,
24 delivery_type : 1,
25 __reserved_1 : 8,
26 ID : 8;
27 } __attribute__ ((packed)) bits;
30 union IO_APIC_reg_01 {
31 u32 raw;
32 struct {
33 u32 version : 8,
34 __reserved_2 : 7,
35 PRQ : 1,
36 entries : 8,
37 __reserved_1 : 8;
38 } __attribute__ ((packed)) bits;
41 union IO_APIC_reg_02 {
42 u32 raw;
43 struct {
44 u32 __reserved_2 : 24,
45 arbitration : 4,
46 __reserved_1 : 4;
47 } __attribute__ ((packed)) bits;
50 union IO_APIC_reg_03 {
51 u32 raw;
52 struct {
53 u32 boot_DT : 1,
54 __reserved_1 : 31;
55 } __attribute__ ((packed)) bits;
59 * # of IO-APICs and # of IRQ routing registers
61 extern int nr_ioapics;
62 extern int nr_ioapic_registers[MAX_IO_APICS];
64 enum ioapic_irq_destination_types {
65 dest_Fixed = 0,
66 dest_LowestPrio = 1,
67 dest_SMI = 2,
68 dest__reserved_1 = 3,
69 dest_NMI = 4,
70 dest_INIT = 5,
71 dest__reserved_2 = 6,
72 dest_ExtINT = 7
75 struct IO_APIC_route_entry {
76 __u32 vector : 8,
77 delivery_mode : 3, /* 000: FIXED
78 * 001: lowest prio
79 * 111: ExtINT
81 dest_mode : 1, /* 0: physical, 1: logical */
82 delivery_status : 1,
83 polarity : 1,
84 irr : 1,
85 trigger : 1, /* 0: edge, 1: level */
86 mask : 1, /* 0: enabled, 1: disabled */
87 __reserved_2 : 15;
89 __u32 __reserved_3 : 24,
90 dest : 8;
91 } __attribute__ ((packed));
94 * MP-BIOS irq configuration table structures:
97 /* I/O APIC entries */
98 extern struct mpc_config_ioapic mp_ioapics[MAX_IO_APICS];
100 /* # of MP IRQ source entries */
101 extern int mp_irq_entries;
103 /* MP IRQ source entries */
104 extern struct mpc_config_intsrc mp_irqs[MAX_IRQ_SOURCES];
106 /* non-0 if default (table-less) MP configuration */
107 extern int mpc_default_type;
109 /* 1 if "noapic" boot option passed */
110 extern int skip_ioapic_setup;
112 static inline void disable_ioapic_setup(void)
114 skip_ioapic_setup = 1;
119 * If we use the IO-APIC for IRQ routing, disable automatic
120 * assignment of PCI IRQ's.
122 #define io_apic_assign_pci_irqs (mp_irq_entries && !skip_ioapic_setup && io_apic_irqs)
124 #ifdef CONFIG_ACPI
125 extern int io_apic_get_version (int ioapic);
126 extern int io_apic_get_redir_entries (int ioapic);
127 extern int io_apic_set_pci_routing (int ioapic, int pin, int irq, int, int);
128 #endif
130 extern int sis_apic_bug; /* dummy */
132 void enable_NMI_through_LVT0 (void * dummy);
134 extern spinlock_t i8259A_lock;
136 #endif