C++ (Cpp) pirq_guest_bind 예제들

예제 #1

파일: event_channel.c 프로젝트: Kylinux/XenKylinx

static long evtchn_bind_pirq(evtchn_bind_pirq_t *bind)
{
    struct evtchn *chn;
    struct domain *d = current->domain;
    struct vcpu   *v = d->vcpu[0];
    struct pirq   *info;
    int            port, pirq = bind->pirq;
    long           rc;

    if ( (pirq < 0) || (pirq >= d->nr_pirqs) )
        return -EINVAL;

    if ( !is_hvm_domain(d) && !irq_access_permitted(d, pirq) )
        return -EPERM;

    spin_lock(&d->event_lock);

    if ( pirq_to_evtchn(d, pirq) != 0 )
        ERROR_EXIT(-EEXIST);

    if ( (port = get_free_port(d)) < 0 )
        ERROR_EXIT(port);

    chn = evtchn_from_port(d, port);

    info = pirq_get_info(d, pirq);
    if ( !info )
        ERROR_EXIT(-ENOMEM);
    info->evtchn = port;
    rc = (!is_hvm_domain(d)
          ? pirq_guest_bind(v, info,
                            !!(bind->flags & BIND_PIRQ__WILL_SHARE))
          : 0);
    if ( rc != 0 )
    {
        info->evtchn = 0;
        pirq_cleanup_check(info, d);
        goto out;
    }

    chn->state  = ECS_PIRQ;
    chn->u.pirq.irq = pirq;
    link_pirq_port(port, chn, v);

    bind->port = port;

#ifdef CONFIG_X86
    if ( is_hvm_domain(d) && domain_pirq_to_irq(d, pirq) > 0 )
        map_domain_emuirq_pirq(d, pirq, IRQ_PT);
#endif

 out:
    spin_unlock(&d->event_lock);

    return rc;
}

예제 #2

파일: event_channel.c 프로젝트: Angel666/android_hardware_intel

static long evtchn_bind_pirq(evtchn_bind_pirq_t *bind)
{
    struct evtchn *chn;
    struct domain *d = current->domain;
    struct vcpu   *v = d->vcpu[0];
    int            port, pirq = bind->pirq;
    long           rc;

    if ( (pirq < 0) || (pirq >= d->nr_pirqs) )
        return -EINVAL;

    if ( !is_hvm_domain(d) && !irq_access_permitted(d, pirq) )
        return -EPERM;

    spin_lock(&d->event_lock);

    if ( d->pirq_to_evtchn[pirq] != 0 )
        ERROR_EXIT(-EEXIST);

    if ( (port = get_free_port(d)) < 0 )
        ERROR_EXIT(port);

    chn = evtchn_from_port(d, port);

    d->pirq_to_evtchn[pirq] = port;
    rc = (!is_hvm_domain(d)
          ? pirq_guest_bind(
              v, pirq, !!(bind->flags & BIND_PIRQ__WILL_SHARE))
          : 0);
    if ( rc != 0 )
    {
        d->pirq_to_evtchn[pirq] = 0;
        goto out;
    }

    chn->state  = ECS_PIRQ;
    chn->u.pirq.irq = pirq;
    link_pirq_port(port, chn, v);

    bind->port = port;

    if ( is_hvm_domain(d) && domain_pirq_to_irq(d, pirq) > 0 )
        map_domain_emuirq_pirq(d, pirq, IRQ_PT);

 out:
    spin_unlock(&d->event_lock);

    return rc;
}

예제 #3

파일: event_channel.c 프로젝트: mikesun/xen-cow-checkpointing

static long evtchn_bind_pirq(evtchn_bind_pirq_t *bind)
{
    struct evtchn *chn;
    struct domain *d = current->domain;
    int            port, pirq = bind->pirq;
    long           rc;

    if ( (pirq < 0) || (pirq >= ARRAY_SIZE(d->pirq_to_evtchn)) )
        return -EINVAL;

    if ( !irq_access_permitted(d, pirq) )
        return -EPERM;

    spin_lock(&d->evtchn_lock);

    if ( d->pirq_to_evtchn[pirq] != 0 )
        ERROR_EXIT(-EEXIST);

    if ( (port = get_free_port(d)) < 0 )
        ERROR_EXIT(port);

    chn = evtchn_from_port(d, port);

    d->pirq_to_evtchn[pirq] = port;
    rc = pirq_guest_bind(d->vcpu[0], pirq, 
                         !!(bind->flags & BIND_PIRQ__WILL_SHARE));
    if ( rc != 0 )
    {
        d->pirq_to_evtchn[pirq] = 0;
        goto out;
    }

    chn->state  = ECS_PIRQ;
    chn->u.pirq = pirq;

    bind->port = port;

 out:
    spin_unlock(&d->evtchn_lock);

    return rc;
}