Re: [PATCH 03/10] ppc/pnv: Introduce a "xics" property alias under the PSI model

[Greg Kurz <groug@kaod.org>]

On Thu, 19 Dec 2019 08:29:54 +0100
Cédric Le Goater <clg@kaod.org> wrote:

> This removes the need of the intermediate link under PSI to pass the
> XICS link to the underlying ICSState object.
> 
> Signed-off-by: Cédric Le Goater <clg@kaod.org>
> ---

Reviewed-by: Greg Kurz <groug@kaod.org>

>  hw/ppc/pnv.c     |  4 ++--
>  hw/ppc/pnv_psi.c | 11 ++---------
>  2 files changed, 4 insertions(+), 11 deletions(-)
> 
> diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
> index 2f611bfdda46..d6fe5ba13535 100644
> --- a/hw/ppc/pnv.c
> +++ b/hw/ppc/pnv.c
> @@ -999,8 +999,6 @@ static void pnv_chip_power8_instance_init(Object *obj)
>  
>      object_initialize_child(obj, "psi",  &chip8->psi, sizeof(chip8->psi),
>                              TYPE_PNV8_PSI, &error_abort, NULL);
> -    object_property_add_const_link(OBJECT(&chip8->psi), "xics",
> -                                   OBJECT(qdev_get_machine()), &error_abort);
>  
>      object_initialize_child(obj, "lpc",  &chip8->lpc, sizeof(chip8->lpc),
>                              TYPE_PNV8_LPC, &error_abort, NULL);
> @@ -1069,6 +1067,8 @@ static void pnv_chip_power8_realize(DeviceState *dev, Error **errp)
>                              "bar", &error_fatal);
>      object_property_set_link(OBJECT(&chip8->psi), OBJECT(chip->system_memory),
>                               "system-memory", &error_abort);
> +    object_property_set_link(OBJECT(&chip8->psi), OBJECT(qdev_get_machine()),
> +                             ICS_PROP_XICS, &error_abort);
>      object_property_set_bool(OBJECT(&chip8->psi), true, "realized", &local_err);
>      if (local_err) {
>          error_propagate(errp, local_err);
> diff --git a/hw/ppc/pnv_psi.c b/hw/ppc/pnv_psi.c
> index 28d34e5c193a..d3124f673571 100644
> --- a/hw/ppc/pnv_psi.c
> +++ b/hw/ppc/pnv_psi.c
> @@ -470,6 +470,8 @@ static void pnv_psi_power8_instance_init(Object *obj)
>  
>      object_initialize_child(obj, "ics-psi",  &psi8->ics, sizeof(psi8->ics),
>                              TYPE_ICS, &error_abort, NULL);
> +    object_property_add_alias(obj, ICS_PROP_XICS, OBJECT(&psi8->ics),
> +                              ICS_PROP_XICS, &error_abort);
>  }
>  
>  static const uint8_t irq_to_xivr[] = {
> @@ -485,21 +487,12 @@ static void pnv_psi_power8_realize(DeviceState *dev, Error **errp)
>  {
>      PnvPsi *psi = PNV_PSI(dev);
>      ICSState *ics = &PNV8_PSI(psi)->ics;
> -    Object *obj;
>      Error *err = NULL;
>      unsigned int i;
>  
>      assert(psi->system_memory);
>  
> -    obj = object_property_get_link(OBJECT(dev), "xics", &err);
> -    if (!obj) {
> -        error_setg(errp, "%s: required link 'xics' not found: %s",
> -                   __func__, error_get_pretty(err));
> -        return;
> -    }
> -
>      /* Create PSI interrupt control source */
> -    object_property_set_link(OBJECT(ics), obj, ICS_PROP_XICS, &error_abort);
>      object_property_set_int(OBJECT(ics), PSI_NUM_INTERRUPTS, "nr-irqs", &err);
>      if (err) {
>          error_propagate(errp, err);