mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2024-12-25 02:45:34 +00:00
145 lines
4.6 KiB
C
145 lines
4.6 KiB
C
/*
|
|
* QEMU KVM support -- ARM specific functions.
|
|
*
|
|
* Copyright (c) 2012 Linaro Limited
|
|
*
|
|
* 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_ARM_H
|
|
#define QEMU_KVM_ARM_H
|
|
|
|
#include "exec/memory.h"
|
|
|
|
/**
|
|
* kvm_arm_vcpu_init:
|
|
* @cs: CPUState
|
|
*
|
|
* Initialize (or reinitialize) the VCPU by invoking the
|
|
* KVM_ARM_VCPU_INIT ioctl with the CPU type and feature
|
|
* bitmask specified in the CPUState.
|
|
*
|
|
* Returns: 0 if success else < 0 error code
|
|
*/
|
|
int kvm_arm_vcpu_init(CPUState *cs);
|
|
|
|
/**
|
|
* kvm_arm_register_device:
|
|
* @mr: memory region for this device
|
|
* @devid: the KVM device ID
|
|
* @group: device control API group for setting addresses
|
|
* @attr: device control API address type
|
|
* @dev_fd: device control device file descriptor (or -1 if not supported)
|
|
*
|
|
* Remember the memory region @mr, and when it is mapped by the
|
|
* machine model, tell the kernel that base address using the
|
|
* KVM_ARM_SET_DEVICE_ADDRESS ioctl or the newer device control API. @devid
|
|
* should be the ID of the device as defined by KVM_ARM_SET_DEVICE_ADDRESS or
|
|
* the arm-vgic device in the device control API.
|
|
* The machine model may map
|
|
* and unmap the device multiple times; the kernel will only be told the final
|
|
* address at the point where machine init is complete.
|
|
*/
|
|
void kvm_arm_register_device(MemoryRegion *mr, uint64_t devid, uint64_t group,
|
|
uint64_t attr, int dev_fd);
|
|
|
|
/**
|
|
* write_list_to_kvmstate:
|
|
* @cpu: ARMCPU
|
|
*
|
|
* For each register listed in the ARMCPU cpreg_indexes list, write
|
|
* its value from the cpreg_values list into the kernel (via ioctl).
|
|
* This updates KVM's working data structures from TCG data or
|
|
* from incoming migration state.
|
|
*
|
|
* Returns: true if all register values were updated correctly,
|
|
* false if some register was unknown to the kernel or could not
|
|
* be written (eg constant register with the wrong value).
|
|
* Note that we do not stop early on failure -- we will attempt
|
|
* writing all registers in the list.
|
|
*/
|
|
bool write_list_to_kvmstate(ARMCPU *cpu);
|
|
|
|
/**
|
|
* write_kvmstate_to_list:
|
|
* @cpu: ARMCPU
|
|
*
|
|
* For each register listed in the ARMCPU cpreg_indexes list, write
|
|
* its value from the kernel into the cpreg_values list. This is used to
|
|
* copy info from KVM's working data structures into TCG or
|
|
* for outbound migration.
|
|
*
|
|
* Returns: true if all register values were read correctly,
|
|
* false if some register was unknown or could not be read.
|
|
* Note that we do not stop early on failure -- we will attempt
|
|
* reading all registers in the list.
|
|
*/
|
|
bool write_kvmstate_to_list(ARMCPU *cpu);
|
|
|
|
/**
|
|
* kvm_arm_reset_vcpu:
|
|
* @cpu: ARMCPU
|
|
*
|
|
* Called at reset time to kernel registers to their initial values.
|
|
*/
|
|
void kvm_arm_reset_vcpu(ARMCPU *cpu);
|
|
|
|
#ifdef CONFIG_KVM
|
|
/**
|
|
* kvm_arm_create_scratch_host_vcpu:
|
|
* @cpus_to_try: array of QEMU_KVM_ARM_TARGET_* values (terminated with
|
|
* QEMU_KVM_ARM_TARGET_NONE) to try as fallback if the kernel does not
|
|
* know the PREFERRED_TARGET ioctl
|
|
* @fdarray: filled in with kvmfd, vmfd, cpufd file descriptors in that order
|
|
* @init: filled in with the necessary values for creating a host vcpu
|
|
*
|
|
* Create a scratch vcpu in its own VM of the type preferred by the host
|
|
* kernel (as would be used for '-cpu host'), for purposes of probing it
|
|
* for capabilities.
|
|
*
|
|
* Returns: true on success (and fdarray and init are filled in),
|
|
* false on failure (and fdarray and init are not valid).
|
|
*/
|
|
bool kvm_arm_create_scratch_host_vcpu(const uint32_t *cpus_to_try,
|
|
int *fdarray,
|
|
struct kvm_vcpu_init *init);
|
|
|
|
/**
|
|
* kvm_arm_destroy_scratch_host_vcpu:
|
|
* @fdarray: array of fds as set up by kvm_arm_create_scratch_host_vcpu
|
|
*
|
|
* Tear down the scratch vcpu created by kvm_arm_create_scratch_host_vcpu.
|
|
*/
|
|
void kvm_arm_destroy_scratch_host_vcpu(int *fdarray);
|
|
|
|
#define TYPE_ARM_HOST_CPU "host-" TYPE_ARM_CPU
|
|
#define ARM_HOST_CPU_CLASS(klass) \
|
|
OBJECT_CLASS_CHECK(ARMHostCPUClass, (klass), TYPE_ARM_HOST_CPU)
|
|
#define ARM_HOST_CPU_GET_CLASS(obj) \
|
|
OBJECT_GET_CLASS(ARMHostCPUClass, (obj), TYPE_ARM_HOST_CPU)
|
|
|
|
typedef struct ARMHostCPUClass {
|
|
/*< private >*/
|
|
ARMCPUClass parent_class;
|
|
/*< public >*/
|
|
|
|
uint64_t features;
|
|
uint32_t target;
|
|
const char *dtb_compatible;
|
|
} ARMHostCPUClass;
|
|
|
|
/**
|
|
* kvm_arm_get_host_cpu_features:
|
|
* @ahcc: ARMHostCPUClass to fill in
|
|
*
|
|
* Probe the capabilities of the host kernel's preferred CPU and fill
|
|
* in the ARMHostCPUClass struct accordingly.
|
|
*/
|
|
bool kvm_arm_get_host_cpu_features(ARMHostCPUClass *ahcc);
|
|
|
|
#endif
|
|
|
|
#endif
|