/*
* QEMU KVM support
*
* Copyright IBM, Corp. 2008
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#ifndef QEMU_KVM_H
#define QEMU_KVM_H
#include <errno.h>
#include "config-host.h"
#include "qemu-queue.h"
#ifdef CONFIG_KVM
#include <linux/kvm.h>
#endif
extern int kvm_allowed;
extern bool kvm_kernel_irqchip;
extern bool kvm_async_interrupts_allowed;
extern bool kvm_irqfds_allowed;
extern bool kvm_msi_via_irqfd_allowed;
extern bool kvm_gsi_routing_allowed;
#if defined CONFIG_KVM || !defined NEED_CPU_H
#define kvm_enabled() (kvm_allowed)
/**
* kvm_irqchip_in_kernel:
*
* Returns: true if the user asked us to create an in-kernel
* irqchip via the "kernel_irqchip=on" machine option.
* What this actually means is architecture and machine model
* specific: on PC, for instance, it means that the LAPIC,
* IOAPIC and PIT are all in kernel. This function should never
* be used from generic target-independent code: use one of the
* following functions or some other specific check instead.
*/
#define kvm_irqchip_in_kernel() (kvm_kernel_irqchip)
/**
* kvm_async_interrupts_enabled:
*
* Returns: true if we can deliver interrupts to KVM
* asynchronously (ie by ioctl from any thread at any time)
* rather than having to do interrupt delivery synchronously
* (where the vcpu must be stopped at a suitable point first).
*/
#define kvm_async_interrupts_enabled() (kvm_async_interrupts_allowed)
/**
* kvm_irqfds_enabled:
*
* Returns: true if we can use irqfds to inject interrupts into
* a KVM CPU (ie the kernel supports irqfds and we are running
* with a configuration where it is meaningful to use them).
*/
#define kvm_irqfds_enabled() (kvm_irqfds_allowed)
/**
* kvm_msi_via_irqfd_enabled:
*
* Returns: true if we can route a PCI MSI (Message Signaled Interrupt)
* to a KVM CPU via an irqfd. This requires that the kernel supports
* this and that we're running in a configuration that permits it.
*/
#define kvm_msi_via_irqfd_enabled() (kvm_msi_via_irqfd_allowed)
/**
* kvm_gsi_routing_enabled:
*
* Returns: true if GSI routing is enabled (ie the kernel supports
* it and we're running in a configuration that permits it).
*/
#define kvm_gsi_routing_enabled() (kvm_gsi_routing_allowed)
#else
#define kvm_enabled() (0)
#define kvm_irqchip_in_kernel() (false)
#define kvm_async_interrupts_enabled() (false)
#define kvm_irqfds_enabled() (false)
#define kvm_msi_via_irqfd_enabled() (false)
#define kvm_gsi_routing_allowed() (false)
#endif
struct kvm_run;
struct kvm_lapic_state;
typedef struct KVMCapabilityInfo {
const char *name;
int value;
} KVMCapabilityInfo;
#define KVM_CAP_INFO(CAP) { "KVM_CAP_" stringify(CAP), KVM_CAP_##CAP }
#define KVM_CAP_LAST_INFO { NULL, 0 }
struct KVMState;
typedef struct KVMState KVMState;
extern KVMState *kvm_state;
/* external API */
int kvm_init(void);
int kvm_has_sync_mmu(void);
int kvm_has_vcpu_events(void);
int kvm_has_robust_singlestep(void);
int kvm_has_debugregs(void);
int kvm_has_xsave(void);
int kvm_has_xcrs(void);
int kvm_has_pit_state2(void);
int kvm_has_many_ioeventfds(void);
int kvm_has_gsi_routing(void);
int kvm_has_intx_set_mask(void);
#ifdef NEED_CPU_H
int kvm_init_vcpu(CPUArchState *env);
int kvm_cpu_exec(CPUArchState *env);
#if !defined(CONFIG_USER_ONLY)
void *kvm_vmalloc(ram_addr_t size);
void *kvm_arch_vmalloc(ram_addr_t size);
void kvm_setup_guest_memory(void *start, size_t size);
int kvm_coalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size);
void kvm_flush_coalesced_mmio_buffer(void);
#endif
int kvm_insert_breakpoint(CPUArchState *current_env, target_ulong addr,
target_ulong len, int type);
int kvm_remove_breakpoint(CPUArchState *current_env, target_ulong addr,
target_ulong len, int type);
void kvm_remove_all_breakpoints(CPUArchState *current_env);
int kvm_update_guest_debug(CPUArchState *env, unsigned long reinject_trap);
#ifndef _WIN32
int kvm_set_signal_mask(CPUArchState *env, const sigset_t *sigset);
#endif
int kvm_on_sigbus_vcpu(CPUArchState *env, int code, void *addr);
int kvm_on_sigbus(int code, void *addr);
/* internal API */
int kvm_ioctl(KVMState *s, int type, ...);
int kvm_vm_ioctl(KVMState *s, int type, ...);
int kvm_vcpu_ioctl(CPUArchState *env, int type, ...);
/* Arch specific hooks */
extern const KVMCapabilityInfo kvm_arch_required_capabilities[];
void kvm_arch_pre_run(CPUArchState *env, struct kvm_run *run);
void kvm_arch_post_run(CPUArchState *env, struct kvm_run *run);
int kvm_arch_handle_exit(CPUArchState *env, struct kvm_run *run);
int kvm_arch_process_async_events(CPUArchState *env);
int kvm_arch_get_registers(CPUArchState *env);
/* state subset only touched by the VCPU itself during runtime */
#define KVM_PUT_RUNTIME_STATE 1
/* state subset modified during VCPU reset */
#define KVM_PUT_RESET_STATE 2
/* full state set, modified during initialization or on vmload */
#define KVM_PUT_FULL_STATE 3
int kvm_arch_put_registers(CPUArchState *env, int level);
int kvm_arch_init(KVMState *s);
int kvm_arch_init_vcpu(CPUArchState *env);
void kvm_arch_reset_vcpu(CPUArchState *env);
int kvm_arch_on_sigbus_vcpu(CPUArchState *env, int code, void *addr);
int kvm_arch_on_sigbus(int code, void *addr);
void kvm_arch_init_irq_routing(KVMState *s);
int kvm_set_irq(KVMState *s, int irq, int level);
int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg);
void kvm_irqchip_add_irq_route(KVMState *s, int gsi, int irqchip, int pin);
void kvm_put_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
void kvm_get_apic_state(DeviceState *d, struct kvm_lapic_state *kapic);
struct kvm_guest_debug;
struct kvm_debug_exit_arch;
struct kvm_sw_breakpoint {
target_ulong pc;
target_ulong saved_insn;
int use_count;
QTAILQ_ENTRY(kvm_sw_breakpoint) entry;
};
QTAILQ_HEAD(kvm_sw_breakpoint_head, kvm_sw_breakpoint);
struct kvm_sw_breakpoint *kvm_find_sw_breakpoint(CPUArchState *env,
target_ulong pc);
int kvm_sw_breakpoints_active(CPUArchState *env);
int kvm_arch_insert_sw_breakpoint(CPUArchState *current_env,
struct kvm_sw_breakpoint *bp);
int kvm_arch_remove_sw_breakpoint(CPUArchState *current_env,
struct kvm_sw_breakpoint *bp);
int kvm_arch_insert_hw_breakpoint(target_ulong addr,
target_ulong len, int type);
int kvm_arch_remove_hw_breakpoint(target_ulong addr,
target_ulong len, int type);
void kvm_arch_remove_all_hw_breakpoints(void);
void kvm_arch_update_guest_debug(CPUArchState *env, struct kvm_guest_debug *dbg);
bool kvm_arch_stop_on_emulation_error(CPUArchState *env);
int kvm_check_extension(KVMState *s, unsigned int extension);
uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
uint32_t index, int reg);
void kvm_cpu_synchronize_state(CPUArchState *env);
void kvm_cpu_synchronize_post_reset(CPUArchState *env);
void kvm_cpu_synchronize_post_init(CPUArchState *env);
/* generic hooks - to be moved/refactored once there are more users */
static inline void cpu_synchronize_state(CPUArchState *env)
{
if (kvm_enabled()) {
kvm_cpu_synchronize_state(env);
}
}
static inline void cpu_synchronize_post_reset(CPUArchState *env)
{
if (kvm_enabled()) {
kvm_cpu_synchronize_post_reset(env);
}
}
static inline void cpu_synchronize_post_init(CPUArchState *env)
{
if (kvm_enabled()) {
kvm_cpu_synchronize_post_init(env);
}
}
#if !defined(CONFIG_USER_ONLY)
int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr,
target_phys_addr_t *phys_addr);
#endif
#endif
int kvm_set_ioeventfd_mmio(int fd, uint32_t adr, uint32_t val, bool assign,
uint32_t size);
int kvm_set_ioeventfd_pio_word(int fd, uint16_t adr, uint16_t val, bool assign);
int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg);
int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg);
void kvm_irqchip_release_virq(KVMState *s, int virq);
int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n, int virq);
int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq);
#endif
