summaryrefslogtreecommitdiffstats
path: root/include/asm-x86/io_apic_64.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-x86/io_apic_64.h')
-rw-r--r--include/asm-x86/io_apic_64.h136
1 files changed, 136 insertions, 0 deletions
diff --git a/include/asm-x86/io_apic_64.h b/include/asm-x86/io_apic_64.h
new file mode 100644
index 000000000000..d9f2e54324d5
--- /dev/null
+++ b/include/asm-x86/io_apic_64.h
@@ -0,0 +1,136 @@
+#ifndef __ASM_IO_APIC_H
+#define __ASM_IO_APIC_H
+
+#include <asm/types.h>
+#include <asm/mpspec.h>
+#include <asm/apicdef.h>
+
+/*
+ * Intel IO-APIC support for SMP and UP systems.
+ *
+ * Copyright (C) 1997, 1998, 1999, 2000 Ingo Molnar
+ */
+
+#define APIC_MISMATCH_DEBUG
+
+/*
+ * The structure of the IO-APIC:
+ */
+union IO_APIC_reg_00 {
+ u32 raw;
+ struct {
+ u32 __reserved_2 : 14,
+ LTS : 1,
+ delivery_type : 1,
+ __reserved_1 : 8,
+ ID : 8;
+ } __attribute__ ((packed)) bits;
+};
+
+union IO_APIC_reg_01 {
+ u32 raw;
+ struct {
+ u32 version : 8,
+ __reserved_2 : 7,
+ PRQ : 1,
+ entries : 8,
+ __reserved_1 : 8;
+ } __attribute__ ((packed)) bits;
+};
+
+union IO_APIC_reg_02 {
+ u32 raw;
+ struct {
+ u32 __reserved_2 : 24,
+ arbitration : 4,
+ __reserved_1 : 4;
+ } __attribute__ ((packed)) bits;
+};
+
+union IO_APIC_reg_03 {
+ u32 raw;
+ struct {
+ u32 boot_DT : 1,
+ __reserved_1 : 31;
+ } __attribute__ ((packed)) bits;
+};
+
+/*
+ * # of IO-APICs and # of IRQ routing registers
+ */
+extern int nr_ioapics;
+extern int nr_ioapic_registers[MAX_IO_APICS];
+
+enum ioapic_irq_destination_types {
+ dest_Fixed = 0,
+ dest_LowestPrio = 1,
+ dest_SMI = 2,
+ dest__reserved_1 = 3,
+ dest_NMI = 4,
+ dest_INIT = 5,
+ dest__reserved_2 = 6,
+ dest_ExtINT = 7
+};
+
+struct IO_APIC_route_entry {
+ __u32 vector : 8,
+ delivery_mode : 3, /* 000: FIXED
+ * 001: lowest prio
+ * 111: ExtINT
+ */
+ dest_mode : 1, /* 0: physical, 1: logical */
+ delivery_status : 1,
+ polarity : 1,
+ irr : 1,
+ trigger : 1, /* 0: edge, 1: level */
+ mask : 1, /* 0: enabled, 1: disabled */
+ __reserved_2 : 15;
+
+ __u32 __reserved_3 : 24,
+ dest : 8;
+} __attribute__ ((packed));
+
+/*
+ * MP-BIOS irq configuration table structures:
+ */
+
+/* I/O APIC entries */
+extern struct mpc_config_ioapic mp_ioapics[MAX_IO_APICS];
+
+/* # of MP IRQ source entries */
+extern int mp_irq_entries;
+
+/* MP IRQ source entries */
+extern struct mpc_config_intsrc mp_irqs[MAX_IRQ_SOURCES];
+
+/* non-0 if default (table-less) MP configuration */
+extern int mpc_default_type;
+
+/* 1 if "noapic" boot option passed */
+extern int skip_ioapic_setup;
+
+static inline void disable_ioapic_setup(void)
+{
+ skip_ioapic_setup = 1;
+}
+
+
+/*
+ * If we use the IO-APIC for IRQ routing, disable automatic
+ * assignment of PCI IRQ's.
+ */
+#define io_apic_assign_pci_irqs (mp_irq_entries && !skip_ioapic_setup && io_apic_irqs)
+
+#ifdef CONFIG_ACPI
+extern int io_apic_get_version (int ioapic);
+extern int io_apic_get_redir_entries (int ioapic);
+extern int io_apic_set_pci_routing (int ioapic, int pin, int irq, int, int);
+#endif
+
+extern int sis_apic_bug; /* dummy */
+
+void enable_NMI_through_LVT0 (void * dummy);
+
+extern spinlock_t i8259A_lock;
+
+#endif