Initial import

1 files changed, 106 insertions, 0 deletions

diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h
new file mode 100644
index 000000000..ad68c7300
--- /dev/null
+++ b/arch/x86/kvm/irq.h
@@ -0,0 +1,106 @@
+/*
+ * irq.h: in kernel interrupt controller related definitions
+ * Copyright (c) 2007, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ * Authors:
+ *   Yaozu (Eddie) Dong <Eddie.dong@intel.com>
+ *
+ */
+
+#ifndef __IRQ_H
+#define __IRQ_H
+
+#include <linux/mm_types.h>
+#include <linux/hrtimer.h>
+#include <linux/kvm_host.h>
+#include <linux/spinlock.h>
+
+#include <kvm/iodev.h>
+#include "ioapic.h"
+#include "lapic.h"
+
+#define PIC_NUM_PINS 16
+#define SELECT_PIC(irq) \
+	((irq) < 8 ? KVM_IRQCHIP_PIC_MASTER : KVM_IRQCHIP_PIC_SLAVE)
+
+struct kvm;
+struct kvm_vcpu;
+
+struct kvm_kpic_state {
+	u8 last_irr;	/* edge detection */
+	u8 irr;		/* interrupt request register */
+	u8 imr;		/* interrupt mask register */
+	u8 isr;		/* interrupt service register */
+	u8 priority_add;	/* highest irq priority */
+	u8 irq_base;
+	u8 read_reg_select;
+	u8 poll;
+	u8 special_mask;
+	u8 init_state;
+	u8 auto_eoi;
+	u8 rotate_on_auto_eoi;
+	u8 special_fully_nested_mode;
+	u8 init4;		/* true if 4 byte init */
+	u8 elcr;		/* PIIX edge/trigger selection */
+	u8 elcr_mask;
+	u8 isr_ack;	/* interrupt ack detection */
+	struct kvm_pic *pics_state;
+};
+
+struct kvm_pic {
+	spinlock_t lock;
+	bool wakeup_needed;
+	unsigned pending_acks;
+	struct kvm *kvm;
+	struct kvm_kpic_state pics[2]; /* 0 is master pic, 1 is slave pic */
+	int output;		/* intr from master PIC */
+	struct kvm_io_device dev_master;
+	struct kvm_io_device dev_slave;
+	struct kvm_io_device dev_eclr;
+	void (*ack_notifier)(void *opaque, int irq);
+	unsigned long irq_states[PIC_NUM_PINS];
+};
+
+struct kvm_pic *kvm_create_pic(struct kvm *kvm);
+void kvm_destroy_pic(struct kvm *kvm);
+int kvm_pic_read_irq(struct kvm *kvm);
+void kvm_pic_update_irq(struct kvm_pic *s);
+
+static inline struct kvm_pic *pic_irqchip(struct kvm *kvm)
+{
+	return kvm->arch.vpic;
+}
+
+static inline int irqchip_in_kernel(struct kvm *kvm)
+{
+	int ret;
+
+	ret = (pic_irqchip(kvm) != NULL);
+	smp_rmb();
+	return ret;
+}
+
+void kvm_pic_reset(struct kvm_kpic_state *s);
+
+void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu);
+void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu);
+void kvm_apic_nmi_wd_deliver(struct kvm_vcpu *vcpu);
+void __kvm_migrate_apic_timer(struct kvm_vcpu *vcpu);
+void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu);
+void __kvm_migrate_timers(struct kvm_vcpu *vcpu);
+
+int apic_has_pending_timer(struct kvm_vcpu *vcpu);
+
+#endif