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virtio: Provide a command to list virtio devices

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U-Boot only supports a subset of the devices supported by QEMU. For
example, U-Boot does not currently support the vsock device.

It is helpful to see what devices are provided by QEMU and whether there
is a driver for it in U-Boot.

Add a new 'virtio list' command to provide this.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2025-07-06 06:35:08 +02:00
parent 7013d9f2f1
commit bbd1cc14c1
4 changed files with 76 additions and 0 deletions
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23
drivers/virtio/virtio-uclass.c
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@@ -202,6 +202,29 @@ int virtio_init(void)
return uclass_probe_all(UCLASS_VIRTIO);
}
void virtio_list(void)
{
struct udevice *dev;
struct uclass *uc;
printf("%-20s %-14s %s\n", "Name", "Type", "Driver");
printf("-------------------- -------------- ---------------\n");
uclass_id_foreach_dev(UCLASS_VIRTIO, dev, uc) {
struct virtio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
const char *typename = NULL; /* skip the 'virtio-' prefix */
struct udevice *child;
if (uc_priv->device < VIRTIO_ID_MAX_NUM)
typename = virtio_drv_name[uc_priv->device];
device_find_first_child(dev, &child);
printf("%-21.21s %2x: %-11.11s %s\n", dev->name,
uc_priv->device, typename ? typename + 7 : "(unknown)",
child ? child->name : "(none)");
}
}
static int virtio_uclass_pre_probe(struct udevice *udev)
{
struct dm_virtio_ops *ops;