KVM: Move ioapic code to common directory.

Move ioapic code to common, since IA64 also needs it.

Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 95 insertions, 0 deletions

diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h
new file mode 100644
index 000000000000..7f16675fe783
--- /dev/null
+++ b/virt/kvm/ioapic.h
@@ -0,0 +1,95 @@
+#ifndef __KVM_IO_APIC_H
+#define __KVM_IO_APIC_H
+
+#include <linux/kvm_host.h>
+
+#include "iodev.h"
+
+struct kvm;
+struct kvm_vcpu;
+
+#define IOAPIC_NUM_PINS  KVM_IOAPIC_NUM_PINS
+#define IOAPIC_VERSION_ID 0x11  /* IOAPIC version */
+#define IOAPIC_EDGE_TRIG  0
+#define IOAPIC_LEVEL_TRIG 1
+
+#define IOAPIC_DEFAULT_BASE_ADDRESS  0xfec00000
+#define IOAPIC_MEM_LENGTH            0x100
+
+/* Direct registers. */
+#define IOAPIC_REG_SELECT  0x00
+#define IOAPIC_REG_WINDOW  0x10
+#define IOAPIC_REG_EOI     0x40 /* IA64 IOSAPIC only */
+
+/* Indirect registers. */
+#define IOAPIC_REG_APIC_ID 0x00 /* x86 IOAPIC only */
+#define IOAPIC_REG_VERSION 0x01
+#define IOAPIC_REG_ARB_ID  0x02 /* x86 IOAPIC only */
+
+/*ioapic delivery mode*/
+#define IOAPIC_FIXED                    0x0
+#define IOAPIC_LOWEST_PRIORITY          0x1
+#define IOAPIC_PMI                      0x2
+#define IOAPIC_NMI                      0x4
+#define IOAPIC_INIT                     0x5
+#define IOAPIC_EXTINT                   0x7
+
+struct kvm_ioapic {
+        u64 base_address;
+        u32 ioregsel;
+        u32 id;
+        u32 irr;
+        u32 pad;
+        union ioapic_redir_entry {
+                u64 bits;
+                struct {
+                        u8 vector;
+                        u8 delivery_mode:3;
+                        u8 dest_mode:1;
+                        u8 delivery_status:1;
+                        u8 polarity:1;
+                        u8 remote_irr:1;
+                        u8 trig_mode:1;
+                        u8 mask:1;
+                        u8 reserve:7;
+                        u8 reserved[4];
+                        u8 dest_id;
+                } fields;
+        } redirtbl[IOAPIC_NUM_PINS];
+        struct kvm_io_device dev;
+        struct kvm *kvm;
+};
+
+#ifdef DEBUG
+#define ASSERT(x)                                                       \
+do {                                                                    \
+        if (!(x)) {                                                     \
+                printk(KERN_EMERG "assertion failed %s: %d: %s\n",      \
+                       __FILE__, __LINE__, #x);                         \
+                BUG();                                                  \
+        }                                                               \
+} while (0)
+#else
+#define ASSERT(x) do { } while (0)
+#endif
+
+static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
+{
+        return kvm->arch.vioapic;
+}
+
+#ifdef CONFIG_IA64
+static inline int irqchip_in_kernel(struct kvm *kvm)
+{
+        return 1;
+}
+#endif
+
+struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector,
+                                       unsigned long bitmap);
+void kvm_ioapic_update_eoi(struct kvm *kvm, int vector);
+int kvm_ioapic_init(struct kvm *kvm);
+void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level);
+void kvm_ioapic_reset(struct kvm_ioapic *ioapic);
+
+#endif