Commit 36503e5e authored by Zhu Lingshan's avatar Zhu Lingshan Committed by Michael S. Tsirkin
Browse files

vDPA/ifcvf: implement vdpa_config_ops.get_vq_size 



This commit implements vdpa_ops.get_vq_size to report
the size of a specific virtqueue.

Signed-off-by: default avatarZhu Lingshan <lingshan.zhu@intel.com>
Message-Id: <20240202163905.8834-4-lingshan.zhu@intel.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 0a926fc9

drivers/vdpa/ifcvf/ifcvf_base.c

+4 −1
Original line number Diff line number Diff line
@@ -69,10 +69,13 @@ static int ifcvf_read_config_range(struct pci_dev *dev, 
	return 0;

}



static u16 ifcvf_get_vq_size(struct ifcvf_hw *hw, u16 qid)

u16 ifcvf_get_vq_size(struct ifcvf_hw *hw, u16 qid)

{

	u16 queue_size;



	if (qid >= hw->nr_vring)

		return 0;



	vp_iowrite16(qid, &hw->common_cfg->queue_select);

	queue_size = vp_ioread16(&hw->common_cfg->queue_size);

drivers/vdpa/ifcvf/ifcvf_base.h

+1 −0
Original line number Diff line number Diff line
@@ -131,4 +131,5 @@ void ifcvf_set_vq_ready(struct ifcvf_hw *hw, u16 qid, bool ready); 
void ifcvf_set_driver_features(struct ifcvf_hw *hw, u64 features);

u64 ifcvf_get_driver_features(struct ifcvf_hw *hw);

u16 ifcvf_get_max_vq_size(struct ifcvf_hw *hw);

u16 ifcvf_get_vq_size(struct ifcvf_hw *hw, u16 qid);

#endif /* _IFCVF_H_ */

drivers/vdpa/ifcvf/ifcvf_main.c

+9 −0
Original line number Diff line number Diff line
@@ -597,6 +597,14 @@ static int ifcvf_vdpa_get_vq_irq(struct vdpa_device *vdpa_dev, 
		return -EINVAL;

}



static u16 ifcvf_vdpa_get_vq_size(struct vdpa_device *vdpa_dev,

			     u16 qid)

{

	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);



	return ifcvf_get_vq_size(vf, qid);

}



static struct vdpa_notification_area ifcvf_get_vq_notification(struct vdpa_device *vdpa_dev,

							       u16 idx)

{
@@ -632,6 +640,7 @@ static const struct vdpa_config_ops ifc_vdpa_ops = { 
	.set_vq_num	= ifcvf_vdpa_set_vq_num,

	.set_vq_address	= ifcvf_vdpa_set_vq_address,

	.get_vq_irq	= ifcvf_vdpa_get_vq_irq,

	.get_vq_size	= ifcvf_vdpa_get_vq_size,

	.kick_vq	= ifcvf_vdpa_kick_vq,

	.get_generation	= ifcvf_vdpa_get_generation,

	.get_device_id	= ifcvf_vdpa_get_device_id,