xref: /qemu/target/riscv/kvm/kvm-cpu.c (revision 0a312b85cb433386804a2ca79f4a1f7ab75f64a7)

/*
 * RISC-V implementation of KVM hooks
 *
 * Copyright (c) 2020 Huawei Technologies Co., Ltd
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2 or later, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "qemu/osdep.h"
#include <sys/ioctl.h>

#include <linux/kvm.h>

#include "qemu-common.h"
#include "qemu/timer.h"
#include "qemu/error-report.h"
#include "qemu/main-loop.h"
#include "sysemu/sysemu.h"
#include "sysemu/kvm.h"
#include "sysemu/kvm_int.h"
#include "cpu.h"
#include "trace.h"
#include "hw/pci/pci.h"
#include "exec/memattrs.h"
#include "exec/address-spaces.h"
#include "hw/boards.h"
#include "hw/irq.h"
#include "qemu/log.h"
#include "hw/loader.h"

static uint64_t kvm_riscv_reg_id(CPURISCVState *env, uint64_t type,
                                 uint64_t idx)
{
    uint64_t id = KVM_REG_RISCV | type | idx;

    switch (riscv_cpu_mxl(env)) {
    case MXL_RV32:
        id |= KVM_REG_SIZE_U32;
        break;
    case MXL_RV64:
        id |= KVM_REG_SIZE_U64;
        break;
    default:
        g_assert_not_reached();
    }
    return id;
}

const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
    KVM_CAP_LAST_INFO
};

int kvm_arch_get_registers(CPUState *cs)
{
    return 0;
}

int kvm_arch_put_registers(CPUState *cs, int level)
{
    return 0;
}

int kvm_arch_release_virq_post(int virq)
{
    return 0;
}

int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
                             uint64_t address, uint32_t data, PCIDevice *dev)
{
    return 0;
}

int kvm_arch_destroy_vcpu(CPUState *cs)
{
    return 0;
}

unsigned long kvm_arch_vcpu_id(CPUState *cpu)
{
    return cpu->cpu_index;
}

void kvm_arch_init_irq_routing(KVMState *s)
{
}

int kvm_arch_init_vcpu(CPUState *cs)
{
    int ret = 0;
    target_ulong isa;
    RISCVCPU *cpu = RISCV_CPU(cs);
    CPURISCVState *env = &cpu->env;
    uint64_t id;

    id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG,
                          KVM_REG_RISCV_CONFIG_REG(isa));
    ret = kvm_get_one_reg(cs, id, &isa);
    if (ret) {
        return ret;
    }
    env->misa_ext = isa;

    return ret;
}

int kvm_arch_msi_data_to_gsi(uint32_t data)
{
    abort();
}

int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route,
                                int vector, PCIDevice *dev)
{
    return 0;
}

int kvm_arch_init(MachineState *ms, KVMState *s)
{
    return 0;
}

int kvm_arch_irqchip_create(KVMState *s)
{
    return 0;
}

int kvm_arch_process_async_events(CPUState *cs)
{
    return 0;
}

void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run)
{
}

MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
{
    return MEMTXATTRS_UNSPECIFIED;
}

bool kvm_arch_stop_on_emulation_error(CPUState *cs)
{
    return true;
}

int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
{
    return 0;
}

bool kvm_arch_cpu_check_are_resettable(void)
{
    return true;
}