xref: /qemu/target/s390x/interrupt.c (revision 79afc36d91be7550affbe7db227b4552451da41d)

/*
 * QEMU S/390 Interrupt support
 *
 * Copyright IBM Corp. 2012, 2014
 *
 * This work is licensed under the terms of the GNU GPL, version 2 or (at your
 * option) any later version.  See the COPYING file in the top-level directory.
 */

#include "cpu.h"
#include "sysemu/kvm.h"

/*
 * All of the following interrupts are floating, i.e. not per-vcpu.
 * We just need a dummy cpustate in order to be able to inject.
 */
#if !defined(CONFIG_USER_ONLY)
void s390_sclp_extint(uint32_t parm)
{
    S390CPU *dummy_cpu = s390_cpu_addr2state(0);
    CPUS390XState *env = &dummy_cpu->env;

    if (kvm_enabled()) {
        kvm_s390_service_interrupt(dummy_cpu, parm);
    } else {
        env->psw.addr += 4;
        cpu_inject_ext(dummy_cpu, EXT_SERVICE, parm, 0);
    }
}

void s390_virtio_irq(S390CPU *cpu, int config_change, uint64_t token)
{
    if (kvm_enabled()) {
        kvm_s390_virtio_irq(cpu, config_change, token);
    } else {
        cpu_inject_ext(cpu, EXT_VIRTIO, config_change, token);
    }
}

void s390_io_interrupt(S390CPU *cpu, uint16_t subchannel_id,
                       uint16_t subchannel_nr, uint32_t io_int_parm,
                       uint32_t io_int_word)
{
    if (kvm_enabled()) {
        kvm_s390_io_interrupt(cpu, subchannel_id, subchannel_nr, io_int_parm,
                              io_int_word);
    } else {
        cpu_inject_io(cpu, subchannel_id, subchannel_nr, io_int_parm,
                      io_int_word);
    }
}

void s390_crw_mchk(S390CPU *cpu)
{
    if (kvm_enabled()) {
        kvm_s390_crw_mchk(cpu);
    } else {
        cpu_inject_crw_mchk(cpu);
    }
}

#endif