Re: [PATCH 2/2] pnv/psi: Consolidate some duplicated code in pnv_psi_realize()

[Philippe Mathieu-Daudé]

Hi Greg,

On 1/7/20 5:32 PM, Greg Kurz wrote:
> The proper way to do that would be to use device_class_set_parent_realize(),
> but defining a Pnv8PsiClass and a Pnv9PsiClass types with a parent_realize
> pointer adds a fair amount of code. Calling pnv_psi_realize() explicitely
> is fine for now.
>
> This should probably be achieved with a device realize hook in the
> PSI base class and device_class_set_parent_realize() in the children
> classes.

Can you add a note explaining why the POWER10 PSI doesn't need it?

> Signed-off-by: Greg Kurz <address@hidden>
> Signed-off-by: Cédric Le Goater <address@hidden>
> ---
>   hw/ppc/pnv_psi.c |   19 ++++++++++++-------
>   1 file changed, 12 insertions(+), 7 deletions(-)
>
> diff --git a/hw/ppc/pnv_psi.c b/hw/ppc/pnv_psi.c
> index 6c94781e377d..546232106756 100644
> --- a/hw/ppc/pnv_psi.c
> +++ b/hw/ppc/pnv_psi.c
> @@ -469,6 +469,16 @@ static void pnv_psi_reset_handler(void *dev)
>       device_reset(DEVICE(dev));
>   }
>   
> +static void pnv_psi_realize(DeviceState *dev, Error **errp)
> +{
> +    PnvPsi *psi = PNV_PSI(dev);
> +
> +    /* Default BAR for MMIO region */
> +    pnv_psi_set_bar(psi, psi->bar | PSIHB_BAR_EN);
> +
> +    qemu_register_reset(pnv_psi_reset_handler, dev);
> +}
> +
>   static void pnv_psi_power8_instance_init(Object *obj)
>   {
>       Pnv8Psi *psi8 = PNV8_PSI(obj);
> @@ -528,9 +538,6 @@ static void pnv_psi_power8_realize(DeviceState *dev, Error 
> **errp)
>       memory_region_init_io(&psi->regs_mr, OBJECT(dev), &psi_mmio_ops, psi,
>                             "psihb", PNV_PSIHB_SIZE);
>   
> -    /* Default BAR for MMIO region */
> -    pnv_psi_set_bar(psi, psi->bar | PSIHB_BAR_EN);
> -
>       /* Default sources in XIVR */
>       for (i = 0; i < PSI_NUM_INTERRUPTS; i++) {
>           uint8_t xivr = irq_to_xivr[i];
> @@ -538,7 +545,7 @@ static void pnv_psi_power8_realize(DeviceState *dev, Error 
> **errp)
>               ((uint64_t) i << PSIHB_XIVR_SRC_SH);
>       }
>   
> -    qemu_register_reset(pnv_psi_reset_handler, dev);
> +    pnv_psi_realize(dev, errp);
>   }
>   
>   static int pnv_psi_dt_xscom(PnvXScomInterface *dev, void *fdt, int xscom_offset)
> @@ -873,9 +880,7 @@ static void pnv_psi_power9_realize(DeviceState *dev, Error 
> **errp)
>       memory_region_init_io(&psi->regs_mr, OBJECT(dev), &pnv_psi_p9_mmio_ops, 
> psi,
>                             "psihb", PNV9_PSIHB_SIZE);
>   
> -    pnv_psi_set_bar(psi, psi->bar | PSIHB_BAR_EN);
> -
> -    qemu_register_reset(pnv_psi_reset_handler, dev);
> +    pnv_psi_realize(dev, errp);
>   }
>   
>   static void pnv_psi_power9_class_init(ObjectClass *klass, void *data)