C++ (Cpp) ICS_IRQ_FREE Examples

Example #1

File: xics.c Project: wermington/qemu

int xics_alloc(XICSState *icp, int src, int irq_hint, bool lsi, Error **errp)
{
    ICSState *ics = &icp->ics[src];
    int irq;

    if (irq_hint) {
        assert(src == xics_find_source(icp, irq_hint));
        if (!ICS_IRQ_FREE(ics, irq_hint - ics->offset)) {
            error_setg(errp, "can't allocate IRQ %d: already in use", irq_hint);
            return -1;
        }
        irq = irq_hint;
    } else {
        irq = ics_find_free_block(ics, 1, 1);
        if (irq < 0) {
            error_setg(errp, "can't allocate IRQ: no IRQ left");
            return -1;
        }
        irq += ics->offset;
    }

    ics_set_irq_type(ics, irq - ics->offset, lsi);
    trace_xics_alloc(src, irq);

    return irq;
}

Example #2

File: xics.c Project: Acidburn0zzz/qemu

int xics_alloc(XICSState *icp, int src, int irq_hint, bool lsi)
{
    ICSState *ics = &icp->ics[src];
    int irq;

    if (irq_hint) {
        assert(src == xics_find_source(icp, irq_hint));
        if (!ICS_IRQ_FREE(ics, irq_hint - ics->offset)) {
            trace_xics_alloc_failed_hint(src, irq_hint);
            return -1;
        }
        irq = irq_hint;
    } else {
        irq = ics_find_free_block(ics, 1, 1);
        if (irq < 0) {
            trace_xics_alloc_failed_no_left(src);
            return -1;
        }
        irq += ics->offset;
    }

    ics_set_irq_type(ics, irq - ics->offset, lsi);
    trace_xics_alloc(src, irq);

    return irq;
}

Example #3

File: xics.c Project: wermington/qemu

static void ics_free(ICSState *ics, int srcno, int num)
{
    int i;

    for (i = srcno; i < srcno + num; ++i) {
        if (ICS_IRQ_FREE(ics, i)) {
            trace_xics_ics_free_warn(ics - ics->icp->ics, i + ics->offset);
        }
        memset(&ics->irqs[i], 0, sizeof(ICSIRQState));
    }
}

Example #4

File: spapr_irq.c Project: aik/qemu

static void spapr_irq_free_xics(sPAPRMachineState *spapr, int irq, int num)
{
    ICSState *ics = spapr->ics;
    uint32_t srcno = irq - ics->offset;
    int i;

    if (ics_valid_irq(ics, irq)) {
        trace_spapr_irq_free(0, irq, num);
        for (i = srcno; i < srcno + num; ++i) {
            if (ICS_IRQ_FREE(ics, i)) {
                trace_spapr_irq_free_warn(0, i);
            }
            memset(&ics->irqs[i], 0, sizeof(ICSIRQState));
        }
    }
}

Example #5

File: xics.c Project: wermington/qemu

static int ics_find_free_block(ICSState *ics, int num, int alignnum)
{
    int first, i;

    for (first = 0; first < ics->nr_irqs; first += alignnum) {
        if (num > (ics->nr_irqs - first)) {
            return -1;
        }
        for (i = first; i < first + num; ++i) {
            if (!ICS_IRQ_FREE(ics, i)) {
                break;
            }
        }
        if (i == (first + num)) {
            return first;
        }
    }

    return -1;
}

Example #6

File: spapr_irq.c Project: aik/qemu

static int spapr_irq_claim_xics(sPAPRMachineState *spapr, int irq, bool lsi,
                                Error **errp)
{
    ICSState *ics = spapr->ics;

    assert(ics);

    if (!ics_valid_irq(ics, irq)) {
        error_setg(errp, "IRQ %d is invalid", irq);
        return -1;
    }

    if (!ICS_IRQ_FREE(ics, irq - ics->offset)) {
        error_setg(errp, "IRQ %d is not free", irq);
        return -1;
    }

    ics_set_irq_type(ics, irq - ics->offset, lsi);
    return 0;
}