libata-link: update Power Management to handle PMP links
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / include / asm-x86 / io_apic_32.h
blobdbe734ddf2aff833f69cb3081d2ce2b2ee14bdc1
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 #ifdef CONFIG_X86_IO_APIC
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 union { struct { __u32
90 __reserved_1 : 24,
91 physical_dest : 4,
92 __reserved_2 : 4;
93 } physical;
95 struct { __u32
96 __reserved_1 : 24,
97 logical_dest : 8;
98 } logical;
99 } dest;
101 } __attribute__ ((packed));
104 * MP-BIOS irq configuration table structures:
107 /* I/O APIC entries */
108 extern struct mpc_config_ioapic mp_ioapics[MAX_IO_APICS];
110 /* # of MP IRQ source entries */
111 extern int mp_irq_entries;
113 /* MP IRQ source entries */
114 extern struct mpc_config_intsrc mp_irqs[MAX_IRQ_SOURCES];
116 /* non-0 if default (table-less) MP configuration */
117 extern int mpc_default_type;
119 /* Older SiS APIC requires we rewrite the index register */
120 extern int sis_apic_bug;
122 /* 1 if "noapic" boot option passed */
123 extern int skip_ioapic_setup;
125 static inline void disable_ioapic_setup(void)
127 skip_ioapic_setup = 1;
130 static inline int ioapic_setup_disabled(void)
132 return skip_ioapic_setup;
136 * If we use the IO-APIC for IRQ routing, disable automatic
137 * assignment of PCI IRQ's.
139 #define io_apic_assign_pci_irqs (mp_irq_entries && !skip_ioapic_setup && io_apic_irqs)
141 #ifdef CONFIG_ACPI
142 extern int io_apic_get_unique_id (int ioapic, int apic_id);
143 extern int io_apic_get_version (int ioapic);
144 extern int io_apic_get_redir_entries (int ioapic);
145 extern int io_apic_set_pci_routing (int ioapic, int pin, int irq, int edge_level, int active_high_low);
146 extern int timer_uses_ioapic_pin_0;
147 #endif /* CONFIG_ACPI */
149 extern int (*ioapic_renumber_irq)(int ioapic, int irq);
151 #else /* !CONFIG_X86_IO_APIC */
152 #define io_apic_assign_pci_irqs 0
153 #endif
155 #endif