alistair23-linux/arch/x86/kvm/ioapic.h
Paolo Bonzini bf0fb67cf9 KVM/ARM changes for v4.1:
- fixes for live migration
 - irqfd support
 - kvm-io-bus & vgic rework to enable ioeventfd
 - page ageing for stage-2 translation
 - various cleanups
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Merge tag 'kvm-arm-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into 'kvm-next'

KVM/ARM changes for v4.1:

- fixes for live migration
- irqfd support
- kvm-io-bus & vgic rework to enable ioeventfd
- page ageing for stage-2 translation
- various cleanups
2015-04-07 18:09:20 +02:00

127 lines
3.1 KiB
C

#ifndef __KVM_IO_APIC_H
#define __KVM_IO_APIC_H
#include <linux/kvm_host.h>
#include <kvm/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
/* 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
#ifdef CONFIG_X86
#define RTC_GSI 8
#else
#define RTC_GSI -1U
#endif
struct rtc_status {
int pending_eoi;
DECLARE_BITMAP(dest_map, KVM_MAX_VCPUS);
};
union kvm_ioapic_redirect_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;
};
struct kvm_ioapic {
u64 base_address;
u32 ioregsel;
u32 id;
u32 irr;
u32 pad;
union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
unsigned long irq_states[IOAPIC_NUM_PINS];
struct kvm_io_device dev;
struct kvm *kvm;
void (*ack_notifier)(void *opaque, int irq);
spinlock_t lock;
DECLARE_BITMAP(handled_vectors, 256);
struct rtc_status rtc_status;
struct delayed_work eoi_inject;
u32 irq_eoi[IOAPIC_NUM_PINS];
u32 irr_delivered;
};
#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;
}
static inline bool kvm_ioapic_handles_vector(struct kvm *kvm, int vector)
{
struct kvm_ioapic *ioapic = kvm->arch.vioapic;
smp_rmb();
return test_bit(vector, ioapic->handled_vectors);
}
void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
int short_hand, unsigned int dest, int dest_mode);
int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector,
int trigger_mode);
int kvm_ioapic_init(struct kvm *kvm);
void kvm_ioapic_destroy(struct kvm *kvm);
int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
int level, bool line_status);
void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
struct kvm_lapic_irq *irq, unsigned long *dest_map);
int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap,
u32 *tmr);
#endif