From: Jason Wang <jasowang@redhat.com>
To: mst@redhat.com, jasowang@redhat.com,
virtualization@lists.linux-foundation.org,
linux-kernel@vger.kernel.org
Cc: shahafs@mellanox.com
Subject: [PATCH V2 09/14] virtio-pci-modern: introduce helper for getting queue nums
Date: Thu, 26 Nov 2020 17:25:59 +0800 [thread overview]
Message-ID: <20201126092604.208033-10-jasowang@redhat.com> (raw)
In-Reply-To: <20201126092604.208033-1-jasowang@redhat.com>
This patch introduces helper for getting queue num of modern device.
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
drivers/virtio/virtio_pci_modern.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c
index f85216ccc6df..0b86a36998c8 100644
--- a/drivers/virtio/virtio_pci_modern.c
+++ b/drivers/virtio/virtio_pci_modern.c
@@ -256,6 +256,17 @@ static u16 vp_modern_get_queue_size(struct virtio_pci_modern_device *mdev,
}
+/*
+ * vp_modern_get_num_queues - get the number of virtqueues
+ * @mdev: the modern virtio-pci device
+ *
+ * Returns the number of virtqueues
+ */
+static u16 vp_modern_get_num_queues(struct virtio_pci_modern_device *mdev)
+{
+ return vp_ioread16(&mdev->common->num_queues);
+}
+
/* virtio config->finalize_features() implementation */
static int vp_finalize_features(struct virtio_device *vdev)
{
@@ -447,7 +458,7 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev,
u16 num, off;
int err;
- if (index >= vp_ioread16(&cfg->num_queues))
+ if (index >= vp_modern_get_num_queues(mdev))
return ERR_PTR(-ENOENT);
/* Select the queue we're interested in */
--
2.25.1
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next prev parent reply other threads:[~2020-11-26 9:26 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-26 9:25 [PATCH V2 00/14] vDPA driver for virtio-pci device Jason Wang
2020-11-26 9:25 ` [PATCH V2 01/14] virtio-pci: do not access iomem via virtio_pci_device directly Jason Wang
2020-11-26 13:46 ` Michael S. Tsirkin
2020-11-27 2:50 ` Jason Wang
2020-11-26 9:25 ` [PATCH V2 02/14] virtio-pci: switch to use devres for modern devices Jason Wang
2020-11-26 13:57 ` Michael S. Tsirkin
2020-11-27 2:54 ` Jason Wang
2020-11-26 9:25 ` [PATCH V2 03/14] virtio-pci: split out modern device Jason Wang
2020-11-26 9:25 ` [PATCH V2 04/14] virtio-pci: move the notification sanity check to vp_modern_probe() Jason Wang
2020-11-26 9:25 ` [PATCH V2 05/14] virtio-pci-modern: introduce vp_modern_set_queue_vector() Jason Wang
2020-11-26 9:25 ` [PATCH V2 06/14] virtio-pci-modern: introduce vp_modern_queue_address() Jason Wang
2020-11-26 9:25 ` [PATCH V2 07/14] virtio-pci-modern: introduce helper to set/get queue_enable Jason Wang
2020-11-26 9:25 ` [PATCH V2 08/14] virtio-pci-modern: introduce helper for setting/geting queue size Jason Wang
2020-11-26 9:25 ` Jason Wang [this message]
2020-11-26 9:26 ` [PATCH V2 10/14] virtio-pci-modern: introduce helper to get notification offset Jason Wang
2020-11-26 9:26 ` [PATCH V2 11/14] virtio-pci: introduce modern device module Jason Wang
2020-11-26 9:26 ` [PATCH V2 12/14] vdpa: set the virtqueue num during register Jason Wang
2020-11-26 9:26 ` [PATCH V2 13/14] virtio_vdpa: don't warn when fail to disable vq Jason Wang
2020-11-26 9:26 ` [PATCH V2 14/14] vdpa: introduce virtio pci driver Jason Wang
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