mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
9e03a0405d
qemu/include/sysemu/kvm.h
Frank Blaschka 9e03a0405d kvm: extend kvm_irqchip_add_msi_route to work on s390 
on s390 MSI-X irqs are presented as thin or adapter interrupts
for this we have to reorganize the routing entry to contain
valid information for the adapter interrupt code on s390.
To minimize impact on existing code we introduce an architecture
function to fixup the routing entry.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-01-12 10:14:04 +01:00

443 lines
14 KiB
C
Raw Blame History

/*
* 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"
#include "qom/cpu.h"
#ifdef CONFIG_KVM
#include <linux/kvm.h>
#include <linux/kvm_para.h>
#else
/* These constants must never be used at runtime if kvm_enabled() is false.
* They exist so we don't need #ifdefs around KVM-specific code that already
* checks kvm_enabled() properly.
*/
#define KVM_CPUID_SIGNATURE 0
#define KVM_CPUID_FEATURES 0
#define KVM_FEATURE_CLOCKSOURCE 0
#define KVM_FEATURE_NOP_IO_DELAY 0
#define KVM_FEATURE_MMU_OP 0
#define KVM_FEATURE_CLOCKSOURCE2 0
#define KVM_FEATURE_ASYNC_PF 0
#define KVM_FEATURE_STEAL_TIME 0
#define KVM_FEATURE_PV_EOI 0
#define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 0
#endif
extern bool kvm_allowed;
extern bool kvm_kernel_irqchip;
extern bool kvm_async_interrupts_allowed;
extern bool kvm_halt_in_kernel_allowed;
extern bool kvm_eventfds_allowed;
extern bool kvm_irqfds_allowed;
extern bool kvm_resamplefds_allowed;
extern bool kvm_msi_via_irqfd_allowed;
extern bool kvm_gsi_routing_allowed;
extern bool kvm_gsi_direct_mapping;
extern bool kvm_readonly_mem_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_halt_in_kernel
*
* Returns: true if halted cpus should still get a KVM_RUN ioctl to run
* inside of kernel space. This only works if MP state is implemented.
*/
#define kvm_halt_in_kernel() (kvm_halt_in_kernel_allowed)
/**
* kvm_eventfds_enabled:
*
* Returns: true if we can use eventfds to receive notifications
* from a KVM CPU (ie the kernel supports eventds and we are running
* with a configuration where it is meaningful to use them).
*/
#define kvm_eventfds_enabled() (kvm_eventfds_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_resamplefds_enabled:
*
* Returns: true if we can use resamplefds to inject interrupts into
* a KVM CPU (ie the kernel supports resamplefds and we are running
* with a configuration where it is meaningful to use them).
*/
#define kvm_resamplefds_enabled() (kvm_resamplefds_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)
/**
* kvm_gsi_direct_mapping:
*
* Returns: true if GSI direct mapping is enabled.
*/
#define kvm_gsi_direct_mapping() (kvm_gsi_direct_mapping)
/**
* kvm_readonly_mem_enabled:
*
* Returns: true if KVM readonly memory is enabled (ie the kernel
* supports it and we're running in a configuration that permits it).
*/
#define kvm_readonly_mem_enabled() (kvm_readonly_mem_allowed)
#else
#define kvm_enabled() (0)
#define kvm_irqchip_in_kernel() (false)
#define kvm_async_interrupts_enabled() (false)
#define kvm_halt_in_kernel() (false)
#define kvm_eventfds_enabled() (false)
#define kvm_irqfds_enabled() (false)
#define kvm_msi_via_irqfd_enabled() (false)
#define kvm_gsi_routing_allowed() (false)
#define kvm_gsi_direct_mapping() (false)
#define kvm_readonly_mem_enabled() (false)
#endif
struct kvm_run;
struct kvm_lapic_state;
struct kvm_irq_routing_entry;
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 */
bool kvm_has_free_slot(MachineState *ms);
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);
int kvm_init_vcpu(CPUState *cpu);
int kvm_cpu_exec(CPUState *cpu);
#ifdef NEED_CPU_H
void kvm_setup_guest_memory(void *start, size_t size);
void kvm_flush_coalesced_mmio_buffer(void);
int kvm_insert_breakpoint(CPUState *cpu, target_ulong addr,
target_ulong len, int type);
int kvm_remove_breakpoint(CPUState *cpu, target_ulong addr,
target_ulong len, int type);
void kvm_remove_all_breakpoints(CPUState *cpu);
int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap);
#ifndef _WIN32
int kvm_set_signal_mask(CPUState *cpu, const sigset_t *sigset);
#endif
int kvm_on_sigbus_vcpu(CPUState *cpu, 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(CPUState *cpu, int type, ...);
/**
* kvm_device_ioctl - call an ioctl on a kvm device
* @fd: The KVM device file descriptor as returned from KVM_CREATE_DEVICE
* @type: The device-ctrl ioctl number
*
* Returns: -errno on error, nonnegative on success
*/
int kvm_device_ioctl(int fd, int type, ...);
/**
* kvm_create_device - create a KVM device for the device control API
* @KVMState: The KVMState pointer
* @type: The KVM device type (see Documentation/virtual/kvm/devices in the
* kernel source)
* @test: If true, only test if device can be created, but don't actually
* create the device.
*
* Returns: -errno on error, nonnegative on success: @test ? 0 : device fd;
*/
int kvm_create_device(KVMState *s, uint64_t type, bool test);
/* Arch specific hooks */
extern const KVMCapabilityInfo kvm_arch_required_capabilities[];
void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run);
void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run);
int kvm_arch_handle_exit(CPUState *cpu, struct kvm_run *run);
int kvm_arch_process_async_events(CPUState *cpu);
int kvm_arch_get_registers(CPUState *cpu);
/* 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(CPUState *cpu, int level);
int kvm_arch_init(KVMState *s);
int kvm_arch_init_vcpu(CPUState *cpu);
/* Returns VCPU ID to be used on KVM_CREATE_VCPU ioctl() */
unsigned long kvm_arch_vcpu_id(CPUState *cpu);
int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr);
int kvm_arch_on_sigbus(int code, void *addr);
void kvm_arch_init_irq_routing(KVMState *s);
int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
uint64_t address, uint32_t data);
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_irqchip_commit_routes(KVMState *s);
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(CPUState *cpu,
target_ulong pc);
int kvm_sw_breakpoints_active(CPUState *cpu);
int kvm_arch_insert_sw_breakpoint(CPUState *cpu,
struct kvm_sw_breakpoint *bp);
int kvm_arch_remove_sw_breakpoint(CPUState *cpu,
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(CPUState *cpu, struct kvm_guest_debug *dbg);
bool kvm_arch_stop_on_emulation_error(CPUState *cpu);
int kvm_check_extension(KVMState *s, unsigned int extension);
int kvm_vm_check_extension(KVMState *s, unsigned int extension);
#define kvm_vm_enable_cap(s, capability, cap_flags, ...) \
({ \
struct kvm_enable_cap cap = { \
.cap = capability, \
.flags = cap_flags, \
}; \
uint64_t args_tmp[] = { __VA_ARGS__ }; \
int i; \
for (i = 0; i < (int)ARRAY_SIZE(args_tmp) && \
i < ARRAY_SIZE(cap.args); i++) { \
cap.args[i] = args_tmp[i]; \
} \
kvm_vm_ioctl(s, KVM_ENABLE_CAP, &cap); \
})
#define kvm_vcpu_enable_cap(cpu, capability, cap_flags, ...) \
({ \
struct kvm_enable_cap cap = { \
.cap = capability, \
.flags = cap_flags, \
}; \
uint64_t args_tmp[] = { __VA_ARGS__ }; \
int i; \
for (i = 0; i < (int)ARRAY_SIZE(args_tmp) && \
i < ARRAY_SIZE(cap.args); i++) { \
cap.args[i] = args_tmp[i]; \
} \
kvm_vcpu_ioctl(cpu, KVM_ENABLE_CAP, &cap); \
})
uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
uint32_t index, int reg);
void kvm_set_sigmask_len(KVMState *s, unsigned int sigmask_len);
#if !defined(CONFIG_USER_ONLY)
int kvm_physical_memory_addr_from_host(KVMState *s, void *ram_addr,
hwaddr *phys_addr);
#endif
#endif /* NEED_CPU_H */
void kvm_cpu_synchronize_state(CPUState *cpu);
void kvm_cpu_synchronize_post_reset(CPUState *cpu);
void kvm_cpu_synchronize_post_init(CPUState *cpu);
void kvm_cpu_clean_state(CPUState *cpu);
/* generic hooks - to be moved/refactored once there are more users */
static inline void cpu_synchronize_state(CPUState *cpu)
{
if (kvm_enabled()) {
kvm_cpu_synchronize_state(cpu);
}
}
static inline void cpu_synchronize_post_reset(CPUState *cpu)
{
if (kvm_enabled()) {
kvm_cpu_synchronize_post_reset(cpu);
}
}
static inline void cpu_synchronize_post_init(CPUState *cpu)
{
if (kvm_enabled()) {
kvm_cpu_synchronize_post_init(cpu);
}
}
static inline void cpu_clean_state(CPUState *cpu)
{
if (kvm_enabled()) {
kvm_cpu_clean_state(cpu);
}
}
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_adapter_route(KVMState *s, AdapterInfo *adapter);
int kvm_irqchip_add_irqfd_notifier(KVMState *s, EventNotifier *n,
EventNotifier *rn, int virq);
int kvm_irqchip_remove_irqfd_notifier(KVMState *s, EventNotifier *n, int virq);
void kvm_pc_gsi_handler(void *opaque, int n, int level);
void kvm_pc_setup_irq_routing(bool pci_enabled);
void kvm_init_irq_routing(KVMState *s);
/**
* kvm_arch_irqchip_create:
* @KVMState: The KVMState pointer
*
* Allow architectures to create an in-kernel irq chip themselves.
*
* Returns: < 0: error
* 0: irq chip was not created
* > 0: irq chip was created
*/
int kvm_arch_irqchip_create(KVMState *s);
/**
* kvm_set_one_reg - set a register value in KVM via KVM_SET_ONE_REG ioctl
* @id: The register ID
* @source: The pointer to the value to be set. It must point to a variable
* of the correct type/size for the register being accessed.
*
* Returns: 0 on success, or a negative errno on failure.
*/
int kvm_set_one_reg(CPUState *cs, uint64_t id, void *source);
/**
* kvm_get_one_reg - get a register value from KVM via KVM_GET_ONE_REG ioctl
* @id: The register ID
* @target: The pointer where the value is to be stored. It must point to a
* variable of the correct type/size for the register being accessed.
*
* Returns: 0 on success, or a negative errno on failure.
*/
int kvm_get_one_reg(CPUState *cs, uint64_t id, void *target);
#endif
Reference in New Issue View Git Blame Copy Permalink