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[1/6] virtio: Expose VIRTIO_F_IOMMU_PLATFORM in device features

Message ID 20230329142500.682922-2-paul.liu@linaro.org
State New
Headers show
Series virtio: Use bounce buffers when VIRTIO_F_IOMMU_PLATFORM set | expand

Commit Message

Paul Liu March 29, 2023, 2:24 p.m. UTC 
From: Will Deacon <willdeacon@google.com>

If we detect the VIRTIO_F_IOMMU_PLATFORM transport feature for a device,
then expose it in the device features.

Signed-off-by: Will Deacon <willdeacon@google.com>
[ Paul: pick from the Android tree. Rebase to the upstream ]
Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Link: https://android.googlesource.com/platform/external/u-boot/+/9693bd26bfcfe77d6a1295a561420e08c5daf019
---
 drivers/virtio/virtio-uclass.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Simon Glass April 1, 2023, 6:31 a.m. UTC | #1 
On Thu, 30 Mar 2023 at 03:25, Ying-Chun Liu (PaulLiu)
<paul.liu@linaro.org> wrote:
>
> From: Will Deacon <willdeacon@google.com>
>
> If we detect the VIRTIO_F_IOMMU_PLATFORM transport feature for a device,
> then expose it in the device features.
>
> Signed-off-by: Will Deacon <willdeacon@google.com>
> [ Paul: pick from the Android tree. Rebase to the upstream ]
> Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
> Cc: Bin Meng <bmeng.cn@gmail.com>
> Link: https://android.googlesource.com/platform/external/u-boot/+/9693bd26bfcfe77d6a1295a561420e08c5daf019
> ---
>  drivers/virtio/virtio-uclass.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>

Reviewed-by: Simon Glass <sjg@chromium.org>
diff mbox series

Patch

diff --git a/drivers/virtio/virtio-uclass.c b/drivers/virtio/virtio-uclass.c
index de9bc90359..b3fb3dbfad 100644
--- a/drivers/virtio/virtio-uclass.c
+++ b/drivers/virtio/virtio-uclass.c
@@ -336,7 +336,7 @@  static int virtio_uclass_child_pre_probe(struct udevice *vdev)
 	/* Transport features always preserved to pass to finalize_features */
 	for (i = VIRTIO_TRANSPORT_F_START; i < VIRTIO_TRANSPORT_F_END; i++)
 		if ((device_features & (1ULL << i)) &&
-		    (i == VIRTIO_F_VERSION_1))
+		    (i == VIRTIO_F_VERSION_1 || i == VIRTIO_F_IOMMU_PLATFORM))
 			__virtio_set_bit(vdev->parent, i);
 
 	debug("(%s) final negotiated features supported %016llx\n",