Commit 9e7dc5fc authored by Cédric Le Goater's avatar Cédric Le Goater Committed by David Gibson
Browse files

spapr: introduce a spapr_irq_set_lsi() helper 



It will make synchronisation easier with the XIVE interrupt mode when
available. The 'irq' parameter refers to the global IRQ number space.

Signed-off-by: default avatarCédric Le Goater <clg@kaod.org>
Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
parent 60c6823b

hw/ppc/spapr.c

+11 −3
Original line number Diff line number Diff line
@@ -3582,6 +3582,14 @@ static int ics_find_free_block(ICSState *ics, int num, int alignnum) 
    return -1;

}



/*

 * Allocate the IRQ number and set the IRQ type, LSI or MSI

 */

static void spapr_irq_set_lsi(sPAPRMachineState *spapr, int irq, bool lsi)

{

    ics_set_irq_type(spapr->ics, irq - spapr->ics->offset, lsi);

}



int spapr_irq_alloc(sPAPRMachineState *spapr, int irq_hint, bool lsi,

                    Error **errp)

{
@@ -3606,7 +3614,7 @@ int spapr_irq_alloc(sPAPRMachineState *spapr, int irq_hint, bool lsi, 
        irq += ics->offset;

    }



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

    spapr_irq_set_lsi(spapr, irq, lsi);

    trace_spapr_irq_alloc(irq);



    return irq;
@@ -3645,10 +3653,10 @@ int spapr_irq_alloc_block(sPAPRMachineState *spapr, int num, bool lsi, 
        return -1;

    }



    first += ics->offset;

    for (i = first; i < first + num; ++i) {

        ics_set_irq_type(ics, i, lsi);

        spapr_irq_set_lsi(spapr, i, lsi);

    }

    first += ics->offset;



    trace_spapr_irq_alloc_block(first, num, lsi, align);