root/virt/kvm/ioapic.h

INCLUDED FROM

DEFINITIONS

1. ioapic_irqchip
2. irqchip_in_kernel

#ifndef __KVM_IO_APIC_H
#define __KVM_IO_APIC_H

#include <linux/kvm_host.h>

#include "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
#define IOAPIC_REG_EOI     0x40 /* IA64 IOSAPIC only */

/* 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

struct kvm_ioapic {
        u64 base_address;
        u32 ioregsel;
        u32 id;
        u32 irr;
        u32 pad;
        union ioapic_redir_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;
        } redirtbl[IOAPIC_NUM_PINS];
        struct kvm_io_device dev;
        struct kvm *kvm;
};

#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;
}

#ifdef CONFIG_IA64
static inline int irqchip_in_kernel(struct kvm *kvm)
{
        return 1;
}
#endif

struct kvm_vcpu *kvm_get_lowest_prio_vcpu(struct kvm *kvm, u8 vector,
                                       unsigned long bitmap);
void kvm_ioapic_update_eoi(struct kvm *kvm, int vector);
int kvm_ioapic_init(struct kvm *kvm);
void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level);
void kvm_ioapic_reset(struct kvm_ioapic *ioapic);

#endif