1 files changed, 221 insertions, 0 deletions

diff --git a/include/asm-x86_64/io_apic.h b/include/asm-x86_64/io_apic.h
new file mode 100644
index 000000000000..7efc932e8f0b
--- /dev/null
+++ b/include/asm-x86_64/io_apic.h
@@ -0,0 +1,221 @@
+#ifndef __ASM_IO_APIC_H
+#define __ASM_IO_APIC_H
+
+#include <linux/config.h>
+#include <asm/types.h>
+#include <asm/mpspec.h>
+
+/*
+ * Intel IO-APIC support for SMP and UP systems.
+ *
+ * Copyright (C) 1997, 1998, 1999, 2000 Ingo Molnar
+ */
+
+#ifdef CONFIG_X86_IO_APIC
+
+#ifdef CONFIG_PCI_MSI
+static inline int use_pci_vector(void)  {return 1;}
+static inline void disable_edge_ioapic_vector(unsigned int vector) { }
+static inline void mask_and_ack_level_ioapic_vector(unsigned int vector) { }
+static inline void end_edge_ioapic_vector (unsigned int vector) { }
+#define startup_level_ioapic    startup_level_ioapic_vector
+#define shutdown_level_ioapic   mask_IO_APIC_vector
+#define enable_level_ioapic     unmask_IO_APIC_vector
+#define disable_level_ioapic    mask_IO_APIC_vector
+#define mask_and_ack_level_ioapic mask_and_ack_level_ioapic_vector
+#define end_level_ioapic        end_level_ioapic_vector
+#define set_ioapic_affinity     set_ioapic_affinity_vector
+
+#define startup_edge_ioapic     startup_edge_ioapic_vector
+#define shutdown_edge_ioapic    disable_edge_ioapic_vector
+#define enable_edge_ioapic      unmask_IO_APIC_vector
+#define disable_edge_ioapic     disable_edge_ioapic_vector
+#define ack_edge_ioapic         ack_edge_ioapic_vector
+#define end_edge_ioapic         end_edge_ioapic_vector
+#else
+static inline int use_pci_vector(void)  {return 0;}
+static inline void disable_edge_ioapic_irq(unsigned int irq) { }
+static inline void mask_and_ack_level_ioapic_irq(unsigned int irq) { }
+static inline void end_edge_ioapic_irq (unsigned int irq) { }
+#define startup_level_ioapic    startup_level_ioapic_irq
+#define shutdown_level_ioapic   mask_IO_APIC_irq
+#define enable_level_ioapic     unmask_IO_APIC_irq
+#define disable_level_ioapic    mask_IO_APIC_irq
+#define mask_and_ack_level_ioapic mask_and_ack_level_ioapic_irq
+#define end_level_ioapic        end_level_ioapic_irq
+#define set_ioapic_affinity     set_ioapic_affinity_irq
+
+#define startup_edge_ioapic     startup_edge_ioapic_irq
+#define shutdown_edge_ioapic    disable_edge_ioapic_irq
+#define enable_edge_ioapic      unmask_IO_APIC_irq
+#define disable_edge_ioapic     disable_edge_ioapic_irq
+#define ack_edge_ioapic         ack_edge_ioapic_irq
+#define end_edge_ioapic         end_edge_ioapic_irq
+#endif
+
+#define APIC_MISMATCH_DEBUG
+
+#define IO_APIC_BASE(idx) \
+                ((volatile int *)(__fix_to_virt(FIX_IO_APIC_BASE_0 + idx) \
+                + (mp_ioapics[idx].mpc_apicaddr & ~PAGE_MASK)))
+
+/*
+ * 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;
+
+        union {         struct { __u32
+                                        __reserved_1    : 24,
+                                        physical_dest   :  4,
+                                        __reserved_2    :  4;
+                        } physical;
+
+                        struct { __u32
+                                        __reserved_1    : 24,
+                                        logical_dest    :  8;
+                        } logical;
+        } dest;
+
+} __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;
+
+static inline unsigned int io_apic_read(unsigned int apic, unsigned int reg)
+{
+        *IO_APIC_BASE(apic) = reg;
+        return *(IO_APIC_BASE(apic)+4);
+}
+
+static inline void io_apic_write(unsigned int apic, unsigned int reg, unsigned int value)
+{
+        *IO_APIC_BASE(apic) = reg;
+        *(IO_APIC_BASE(apic)+4) = value;
+}
+
+/*
+ * Re-write a value: to be used for read-modify-write
+ * cycles where the read already set up the index register.
+ */
+static inline void io_apic_modify(unsigned int apic, unsigned int value)
+{
+        *(IO_APIC_BASE(apic)+4) = value;
+}
+
+/*
+ * Synchronize the IO-APIC and the CPU by doing
+ * a dummy read from the IO-APIC
+ */
+static inline void io_apic_sync(unsigned int apic)
+{
+        (void) *(IO_APIC_BASE(apic)+4);
+}
+
+/* 1 if "noapic" boot option passed */
+extern int skip_ioapic_setup;
+
+/*
+ * 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_BOOT
+extern int io_apic_get_unique_id (int ioapic, int apic_id);
+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 */ 
+
+#else  /* !CONFIG_X86_IO_APIC */
+#define io_apic_assign_pci_irqs 0
+#endif
+
+extern int assign_irq_vector(int irq);
+
+void enable_NMI_through_LVT0 (void * dummy);
+
+#endif