Re: [PATCH v2 10/15] hw/display/sm501: Embed OHCI QOM child in chipset

[BALATON Zoltan]

On Fri, 3 Feb 2023, Philippe Mathieu-Daudé wrote:
> Note this device doesn't implement unrealize().
>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>

> ---
> hw/display/sm501.c | 17 ++++++++++-------
> 1 file changed, 10 insertions(+), 7 deletions(-)
>
> diff --git a/hw/display/sm501.c b/hw/display/sm501.c
> index 52e42585af..0f7e09d7e2 100644
> --- a/hw/display/sm501.c
> +++ b/hw/display/sm501.c
> @@ -28,6 +28,7 @@
> #include "qapi/error.h"
> #include "qemu/log.h"
> #include "qemu/module.h"
> +#include "hw/usb/hcd-ohci.h"
> #include "hw/char/serial.h"
> #include "ui/console.h"
> #include "hw/sysbus.h"
> @@ -1944,13 +1945,13 @@ struct SM501SysBusState {
>     uint32_t vram_size;
>     uint32_t base;
>     SerialMM serial;
> +    OHCISysBusState ohci;
> };
>
> static void sm501_realize_sysbus(DeviceState *dev, Error **errp)
> {
>     SM501SysBusState *s = SYSBUS_SM501(dev);
>     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
> -    DeviceState *usb_dev;
>     MemoryRegion *mr;
>
>     sm501_init(&s->state, dev, s->vram_size);
> @@ -1963,13 +1964,11 @@ static void sm501_realize_sysbus(DeviceState *dev, 
> Error **errp)
>     sysbus_init_mmio(sbd, &s->state.mmio_region);
>
>     /* bridge to usb host emulation module */
> -    usb_dev = qdev_new("sysbus-ohci");
> -    qdev_prop_set_uint32(usb_dev, "num-ports", 2);
> -    qdev_prop_set_uint64(usb_dev, "dma-offset", s->base);
> -    sysbus_realize_and_unref(SYS_BUS_DEVICE(usb_dev), &error_fatal);
> +    qdev_prop_set_uint64(DEVICE(&s->ohci), "dma-offset", s->base);
> +    sysbus_realize_and_unref(SYS_BUS_DEVICE(&s->ohci), &error_fatal);
>     memory_region_add_subregion(&s->state.mmio_region, SM501_USB_HOST,
> -                       sysbus_mmio_get_region(SYS_BUS_DEVICE(usb_dev), 0));
> -    sysbus_pass_irq(sbd, SYS_BUS_DEVICE(usb_dev));
> +                       sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->ohci), 0));
> +    sysbus_pass_irq(sbd, SYS_BUS_DEVICE(&s->ohci));
>
>     /* bridge to serial emulation module */
>     sysbus_realize(SYS_BUS_DEVICE(&s->serial), &error_fatal);
> @@ -2016,8 +2015,12 @@ static void sm501_sysbus_class_init(ObjectClass *klass, 
> void *data)
> static void sm501_sysbus_init(Object *o)
> {
>     SM501SysBusState *sm501 = SYSBUS_SM501(o);
> +    OHCISysBusState *ohci = &sm501->ohci;
>     SerialMM *smm = &sm501->serial;
>
> +    object_initialize_child(o, "ohci", ohci, TYPE_SYSBUS_OHCI);
> +    qdev_prop_set_uint32(DEVICE(ohci), "num-ports", 2);
> +
>     object_initialize_child(o, "serial", smm, TYPE_SERIAL_MM);
>     qdev_set_legacy_instance_id(DEVICE(smm), SM501_UART0, 2);
>     qdev_prop_set_uint8(DEVICE(smm), "regshift", 2);