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vDPA/ifcvf: implement vdpa_config_ops.get_vq_size

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

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Message-Id: <20240202163905.8834-4-lingshan.zhu@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Zhu Lingshan 2024-02-03 00:38:58 +08:00 committed by Michael S. Tsirkin
parent 0a926fc972
commit 36503e5e06
3 changed files with 14 additions and 1 deletions
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5
drivers/vdpa/ifcvf/ifcvf_base.c
View File

@ -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);

1
drivers/vdpa/ifcvf/ifcvf_base.h
View File

@ -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_ */

9
drivers/vdpa/ifcvf/ifcvf_main.c
View File

@ -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,