Release 4.14 arch/x86/kvm/irq.h
/*
* 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];
};
int kvm_pic_init(struct kvm *kvm);
void kvm_pic_destroy(struct kvm *kvm);
int kvm_pic_read_irq(struct kvm *kvm);
void kvm_pic_update_irq(struct kvm_pic *s);
static inline int pic_in_kernel(struct kvm *kvm)
{
int mode = kvm->arch.irqchip_mode;
/* Matches smp_wmb() when setting irqchip_mode */
smp_rmb();
return mode == KVM_IRQCHIP_KERNEL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Steve Rutherford | 17 | 56.67% | 1 | 50.00% |
| David Hildenbrand | 13 | 43.33% | 1 | 50.00% |
| Total | 30 | 100.00% | 2 | 100.00% |
static inline int irqchip_split(struct kvm *kvm)
{
int mode = kvm->arch.irqchip_mode;
/* Matches smp_wmb() when setting irqchip_mode */
smp_rmb();
return mode == KVM_IRQCHIP_SPLIT;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Steve Rutherford | 17 | 56.67% | 1 | 33.33% |
| David Hildenbrand | 10 | 33.33% | 1 | 33.33% |
| Radim Krčmář | 3 | 10.00% | 1 | 33.33% |
| Total | 30 | 100.00% | 3 | 100.00% |
static inline int irqchip_kernel(struct kvm *kvm)
{
int mode = kvm->arch.irqchip_mode;
/* Matches smp_wmb() when setting irqchip_mode */
smp_rmb();
return mode == KVM_IRQCHIP_KERNEL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Radim Krčmář | 10 | 33.33% | 1 | 33.33% |
| Xiantao Zhang | 10 | 33.33% | 1 | 33.33% |
| David Hildenbrand | 10 | 33.33% | 1 | 33.33% |
| Total | 30 | 100.00% | 3 | 100.00% |
static inline int irqchip_in_kernel(struct kvm *kvm)
{
int mode = kvm->arch.irqchip_mode;
/* Matches smp_wmb() when setting irqchip_mode */
smp_rmb();
return mode != KVM_IRQCHIP_NONE;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Radim Krčmář | 14 | 46.67% | 1 | 14.29% |
| David Hildenbrand | 6 | 20.00% | 2 | 28.57% |
| Marcelo Tosatti | 4 | 13.33% | 1 | 14.29% |
| Xiantao Zhang | 3 | 10.00% | 1 | 14.29% |
| Paolo Bonzini | 2 | 6.67% | 1 | 14.29% |
| Steve Rutherford | 1 | 3.33% | 1 | 14.29% |
| Total | 30 | 100.00% | 7 | 100.00% |
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);
int kvm_setup_default_irq_routing(struct kvm *kvm);
int kvm_setup_empty_irq_routing(struct kvm *kvm);
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Eddie Dong | 134 | 32.06% | 3 | 8.33% |
| Marcelo Tosatti | 55 | 13.16% | 5 | 13.89% |
| David Hildenbrand | 39 | 9.33% | 3 | 8.33% |
| Steve Rutherford | 35 | 8.37% | 2 | 5.56% |
| Radim Krčmář | 32 | 7.66% | 2 | 5.56% |
| Xiantao Zhang | 21 | 5.02% | 2 | 5.56% |
| Eric Auger | 18 | 4.31% | 1 | 2.78% |
| Avi Kivity | 16 | 3.83% | 4 | 11.11% |
| Hollis Blanchard | 14 | 3.35% | 2 | 5.56% |
| Jan Kiszka | 12 | 2.87% | 3 | 8.33% |
| Gleb Natapov | 10 | 2.39% | 2 | 5.56% |
| Qing He | 9 | 2.15% | 1 | 2.78% |
| Sasha Levin | 9 | 2.15% | 1 | 2.78% |
| Wei Yongjun | 6 | 1.44% | 1 | 2.78% |
| Ben-Ami Yassour | 4 | 0.96% | 1 | 2.78% |
| Paolo Bonzini | 2 | 0.48% | 1 | 2.78% |
| Michael S. Tsirkin | 1 | 0.24% | 1 | 2.78% |
| Andre Przywara | 1 | 0.24% | 1 | 2.78% |
| Total | 418 | 100.00% | 36 | 100.00% |
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