| /* |
| * 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 "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; |
| |
| typedef void irq_request_func(void *opaque, int level); |
| |
| 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 isr_ack; /* interrupt ack detection */ |
| 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; |
| struct kvm_pic *pics_state; |
| }; |
| |
| struct kvm_pic { |
| spinlock_t lock; |
| unsigned pending_acks; |
| struct kvm *kvm; |
| struct kvm_kpic_state pics[2]; /* 0 is master pic, 1 is slave pic */ |
| irq_request_func *irq_request; |
| void *irq_request_opaque; |
| int output; /* intr from master PIC */ |
| struct kvm_io_device dev; |
| void (*ack_notifier)(void *opaque, int irq); |
| unsigned long irq_states[16]; |
| }; |
| |
| 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); |
| void kvm_pic_clear_isr_ack(struct kvm *kvm); |
| |
| 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 pit_has_pending_timer(struct kvm_vcpu *vcpu); |
| int apic_has_pending_timer(struct kvm_vcpu *vcpu); |
| |
| #endif |