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virtio-blk: add VIRTIO_BLK_F_FLUSH features

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Should support the flush command only when virtio device support
feature VIRTIO_BLK_F_FLUSH

Signed-off-by: wangyongrong <wangyongrong@xiaomi.com>
This commit is contained in:
wangyongrong
2024-06-03 14:06:56 +08:00
committed by Xiang Xiao
parent 7eda1700c2
commit 7ec167392c
1 changed files with 9 additions and 2 deletions
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drivers/virtio/virtio-blk.c
+9 -2
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@@ -41,6 +41,10 @@
#define VIRTIO_BLK_REQ_HEADER_SIZE sizeof(struct virtio_blk_req_s)
#define VIRTIO_BLK_RESP_HEADER_SIZE sizeof(struct virtio_blk_resp_s)
/* Block feature bits */
#define VIRTIO_BLK_F_FLUSH 9 /* Cache flush command support */
/* Block request type */
#define VIRTIO_BLK_T_IN 0 /* READ */
@@ -458,7 +462,10 @@ static int virtio_blk_ioctl(FAR struct inode *inode, int cmd,
switch (cmd)
{
case BIOC_FLUSH:
ret = virtio_blk_flush(priv);
if (virtio_has_feature(priv->vdev, VIRTIO_BLK_F_FLUSH))
{
ret = virtio_blk_flush(priv);
}
break;
}
@@ -514,7 +521,7 @@ static int virtio_blk_init(FAR struct virtio_blk_priv_s *priv,
/* Initialize the virtio device */
virtio_set_status(vdev, VIRTIO_CONFIG_STATUS_DRIVER);
virtio_set_features(vdev, 0);
virtio_negotiate_features(vdev, 1UL << VIRTIO_BLK_F_FLUSH);
virtio_set_status(vdev, VIRTIO_CONFIG_FEATURES_OK);
vqname[0] = "virtio_blk_vq";