/*
 * qemu/kvm integration
 *
 * Copyright (C) 2006-2008 Qumranet Technologies
 *
 * Licensed under the terms of the GNU GPL version 2 or higher.
 */
#ifndef THE_ORIGINAL_AND_TRUE_QEMU_KVM_H
#define THE_ORIGINAL_AND_TRUE_QEMU_KVM_H

#include "cpu.h"

#include <signal.h>
#include <stdlib.h>

#ifdef CONFIG_KVM

#include <stdint.h>

#ifndef __user
#define __user       /* temporary, until installed via make headers_install */
#endif

#include <linux/kvm.h>

#include <signal.h>

/* FIXME: share this number with kvm */
/* FIXME: or dynamically alloc/realloc regions */
#define KVM_MAX_NUM_MEM_REGIONS 32u
#define MAX_VCPUS 16

#include "kvm.h"

int kvm_create_irqchip(KVMState *s);

/*!
 * \brief Dump in kernel IRQCHIP contents
 *
 * Dump one of the in kernel irq chip devices, including PIC (master/slave)
 * and IOAPIC into a kvm_irqchip structure
 *
 * \param kvm Pointer to the current kvm_context
 * \param chip The irq chip device to be dumped
 */
int kvm_get_irqchip(KVMState *s, struct kvm_irqchip *chip);

/*!
 * \brief Set in kernel IRQCHIP contents
 *
 * Write one of the in kernel irq chip devices, including PIC (master/slave)
 * and IOAPIC
 *
 *
 * \param kvm Pointer to the current kvm_context
 * \param chip THe irq chip device to be written
 */
int kvm_set_irqchip(KVMState *s, struct kvm_irqchip *chip);

#if defined(__i386__) || defined(__x86_64__)
/*!
 * \brief Get in kernel local APIC for vcpu
 *
 * Save the local apic state including the timer of a virtual CPU
 *
 * \param kvm Pointer to the current kvm_context
 * \param vcpu Which virtual CPU should be accessed
 * \param s Local apic state of the specific virtual CPU
 */
int kvm_get_lapic(CPUState *env, struct kvm_lapic_state *s);

/*!
 * \brief Set in kernel local APIC for vcpu
 *
 * Restore the local apic state including the timer of a virtual CPU
 *
 * \param kvm Pointer to the current kvm_context
 * \param vcpu Which virtual CPU should be accessed
 * \param s Local apic state of the specific virtual CPU
 */
int kvm_set_lapic(CPUState *env, struct kvm_lapic_state *s);

/*!
 * \brief Get in kernel PIT of the virtual domain
 *
 * Save the PIT state.
 *
 * \param kvm Pointer to the current kvm_context
 * \param s PIT state of the virtual domain
 */
int kvm_get_pit(KVMState *s, struct kvm_pit_state *pit_state);

/*!
 * \brief Set in kernel PIT of the virtual domain
 *
 * Restore the PIT state.
 * Timer would be retriggerred after restored.
 *
 * \param kvm Pointer to the current kvm_context
 * \param s PIT state of the virtual domain
 */
int kvm_set_pit(KVMState *s, struct kvm_pit_state *pit_state);

int kvm_reinject_control(KVMState *s, int pit_reinject);

/*!
 * \brief Set in kernel PIT state2 of the virtual domain
 *
 *
 * \param kvm Pointer to the current kvm_context
 * \param ps2 PIT state2 of the virtual domain
 * \return 0 on success
 */
int kvm_set_pit2(KVMState *s, struct kvm_pit_state2 *ps2);

/*!
 * \brief Get in kernel PIT state2 of the virtual domain
 *
 *
 * \param kvm Pointer to the current kvm_context
 * \param ps2 PIT state2 of the virtual domain
 * \return 0 on success
 */
int kvm_get_pit2(KVMState *s, struct kvm_pit_state2 *ps2);

#endif

int kvm_enable_vapic(CPUState *env, uint64_t vapic);

/*!
 * \brief Notifies host kernel about a PCI device to be assigned to a guest
 *
 * Used for PCI device assignment, this function notifies the host
 * kernel about the assigning of the physical PCI device to a guest.
 *
 * \param kvm Pointer to the current kvm_context
 * \param assigned_dev Parameters, like bus, devfn number, etc
 */
int kvm_assign_pci_device(KVMState *s,
                          struct kvm_assigned_pci_dev *assigned_dev);

/*!
 * \brief Assign IRQ for an assigned device
 *
 * Used for PCI device assignment, this function assigns IRQ numbers for
 * an physical device and guest IRQ handling.
 *
 * \param kvm Pointer to the current kvm_context
 * \param assigned_irq Parameters, like dev id, host irq, guest irq, etc
 */
int kvm_assign_irq(KVMState *s, struct kvm_assigned_irq *assigned_irq);

/*!
 * \brief Deassign IRQ for an assigned device
 *
 * Used for PCI device assignment, this function deassigns IRQ numbers
 * for an assigned device.
 *
 * \param kvm Pointer to the current kvm_context
 * \param assigned_irq Parameters, like dev id, host irq, guest irq, etc
 */
int kvm_deassign_irq(KVMState *s, struct kvm_assigned_irq *assigned_irq);

/*!
 * \brief Notifies host kernel about a PCI device to be deassigned from a guest
 *
 * Used for hot remove PCI device, this function notifies the host
 * kernel about the deassigning of the physical PCI device from a guest.
 *
 * \param kvm Pointer to the current kvm_context
 * \param assigned_dev Parameters, like bus, devfn number, etc
 */
int kvm_deassign_pci_device(KVMState *s,
                            struct kvm_assigned_pci_dev *assigned_dev);

/*!
 * \brief Clears the temporary irq routing table
 *
 * Clears the temporary irq routing table.  Nothing is committed to the
 * running VM.
 *
 */
int kvm_clear_gsi_routes(void);

/*!
 * \brief Adds an irq route to the temporary irq routing table
 *
 * Adds an irq route to the temporary irq routing table.  Nothing is
 * committed to the running VM.
 */
int kvm_add_irq_route(int gsi, int irqchip, int pin);

/*!
 * \brief Removes an irq route from the temporary irq routing table
 *
 * Adds an irq route to the temporary irq routing table.  Nothing is
 * committed to the running VM.
 */
int kvm_del_irq_route(int gsi, int irqchip, int pin);

struct kvm_irq_routing_entry;
/*!
 * \brief Adds a routing entry to the temporary irq routing table
 *
 * Adds a filled routing entry to the temporary irq routing table. Nothing is
 * committed to the running VM.
 */
int kvm_add_routing_entry(struct kvm_irq_routing_entry *entry);

/*!
 * \brief Removes a routing from the temporary irq routing table
 *
 * Remove a routing to the temporary irq routing table.  Nothing is
 * committed to the running VM.
 */
int kvm_del_routing_entry(struct kvm_irq_routing_entry *entry);

/*!
 * \brief Updates a routing in the temporary irq routing table
 *
 * Update a routing in the temporary irq routing table
 * with a new value. entry type and GSI can not be changed.
 * Nothing is committed to the running VM.
 */
int kvm_update_routing_entry(struct kvm_irq_routing_entry *entry,
                             struct kvm_irq_routing_entry *newentry);


int kvm_assign_set_msix_nr(KVMState *s, struct kvm_assigned_msix_nr *msix_nr);
int kvm_assign_set_msix_entry(KVMState *s,
                              struct kvm_assigned_msix_entry *entry);

#else                           /* !CONFIG_KVM */

struct kvm_pit_state {
};

#endif                          /* !CONFIG_KVM */

void kvm_save_lapic(CPUState *env);
void kvm_load_lapic(CPUState *env);

void kvm_hpet_enable_kpit(void);
void kvm_hpet_disable_kpit(void);

void kvm_tpr_access_report(CPUState *env, uint64_t rip, int is_write);

int kvm_arch_init_irq_routing(void);

int kvm_add_ioport_region(unsigned long start, unsigned long size,
                          bool is_hot_plug);
int kvm_remove_ioport_region(unsigned long start, unsigned long size,
                             bool is_hot_unplug);

int kvm_update_ioport_access(CPUState *env);
int kvm_arch_set_ioport_access(unsigned long start, unsigned long size,
                               bool enable);

extern int kvm_irqchip;
extern int kvm_pit_reinject;
extern unsigned int kvm_shadow_memory;

int kvm_handle_tpr_access(CPUState *env);
void kvm_tpr_enable_vapic(CPUState *env);

#endif