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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 33 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000435.254582722@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* irq.h: in kernel interrupt controller related definitions
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* Copyright (c) 2007, Intel Corporation.
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*
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* Authors:
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* Yaozu (Eddie) Dong <Eddie.dong@intel.com>
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*/
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#ifndef __IRQ_H
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#define __IRQ_H
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#include <linux/mm_types.h>
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#include <linux/hrtimer.h>
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#include <linux/kvm_host.h>
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#include <linux/spinlock.h>
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#include <kvm/iodev.h>
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#include "ioapic.h"
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#include "lapic.h"
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#define PIC_NUM_PINS 16
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#define SELECT_PIC(irq) \
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((irq) < 8 ? KVM_IRQCHIP_PIC_MASTER : KVM_IRQCHIP_PIC_SLAVE)
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struct kvm;
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struct kvm_vcpu;
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struct kvm_kpic_state {
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u8 last_irr; /* edge detection */
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u8 irr; /* interrupt request register */
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u8 imr; /* interrupt mask register */
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u8 isr; /* interrupt service register */
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u8 priority_add; /* highest irq priority */
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u8 irq_base;
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u8 read_reg_select;
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u8 poll;
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u8 special_mask;
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u8 init_state;
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u8 auto_eoi;
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u8 rotate_on_auto_eoi;
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u8 special_fully_nested_mode;
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u8 init4; /* true if 4 byte init */
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u8 elcr; /* PIIX edge/trigger selection */
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u8 elcr_mask;
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u8 isr_ack; /* interrupt ack detection */
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struct kvm_pic *pics_state;
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};
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struct kvm_pic {
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spinlock_t lock;
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bool wakeup_needed;
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unsigned pending_acks;
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struct kvm *kvm;
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struct kvm_kpic_state pics[2]; /* 0 is master pic, 1 is slave pic */
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int output; /* intr from master PIC */
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struct kvm_io_device dev_master;
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struct kvm_io_device dev_slave;
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struct kvm_io_device dev_eclr;
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void (*ack_notifier)(void *opaque, int irq);
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unsigned long irq_states[PIC_NUM_PINS];
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};
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int kvm_pic_init(struct kvm *kvm);
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void kvm_pic_destroy(struct kvm *kvm);
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int kvm_pic_read_irq(struct kvm *kvm);
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void kvm_pic_update_irq(struct kvm_pic *s);
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static inline int pic_in_kernel(struct kvm *kvm)
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{
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int mode = kvm->arch.irqchip_mode;
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/* Matches smp_wmb() when setting irqchip_mode */
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smp_rmb();
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return mode == KVM_IRQCHIP_KERNEL;
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}
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static inline int irqchip_split(struct kvm *kvm)
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{
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int mode = kvm->arch.irqchip_mode;
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/* Matches smp_wmb() when setting irqchip_mode */
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smp_rmb();
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return mode == KVM_IRQCHIP_SPLIT;
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}
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static inline int irqchip_kernel(struct kvm *kvm)
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{
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int mode = kvm->arch.irqchip_mode;
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/* Matches smp_wmb() when setting irqchip_mode */
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smp_rmb();
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return mode == KVM_IRQCHIP_KERNEL;
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}
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static inline int irqchip_in_kernel(struct kvm *kvm)
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{
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int mode = kvm->arch.irqchip_mode;
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/* Matches smp_wmb() when setting irqchip_mode */
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smp_rmb();
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return mode != KVM_IRQCHIP_NONE;
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}
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bool kvm_arch_irqfd_allowed(struct kvm *kvm, struct kvm_irqfd *args);
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void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu);
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void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu);
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void kvm_apic_nmi_wd_deliver(struct kvm_vcpu *vcpu);
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void __kvm_migrate_apic_timer(struct kvm_vcpu *vcpu);
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void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu);
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void __kvm_migrate_timers(struct kvm_vcpu *vcpu);
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int apic_has_pending_timer(struct kvm_vcpu *vcpu);
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int kvm_setup_default_irq_routing(struct kvm *kvm);
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int kvm_setup_empty_irq_routing(struct kvm *kvm);
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#endif
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