From: Zhu Lingshan <lingshan.zhu@intel•com>
To: jasowang@redhat•com, mst@redhat•com
Cc: netdev@vger•kernel.org, Zhu Lingshan <lingshan.zhu@intel•com>
Subject: [PATCH 2/7] vDPA/ifcvf: introduce new helpers to set config vector and vq vectors
Date: Mon, 10 Jan 2022 13:18:46 +0800 [thread overview]
Message-ID: <20220110051851.84807-3-lingshan.zhu@intel.com> (raw)
In-Reply-To: <20220110051851.84807-1-lingshan.zhu@intel.com>
This commit introduces new helpers to set config vector
and vq vectors in virtio common config space.
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel•com>
---
drivers/vdpa/ifcvf/ifcvf_base.c | 30 ++++++++++++++++++++++++++++++
drivers/vdpa/ifcvf/ifcvf_base.h | 2 ++
2 files changed, 32 insertions(+)
diff --git a/drivers/vdpa/ifcvf/ifcvf_base.c b/drivers/vdpa/ifcvf/ifcvf_base.c
index 0b5df4cfaf06..696a41560eaa 100644
--- a/drivers/vdpa/ifcvf/ifcvf_base.c
+++ b/drivers/vdpa/ifcvf/ifcvf_base.c
@@ -15,6 +15,36 @@ struct ifcvf_adapter *vf_to_adapter(struct ifcvf_hw *hw)
return container_of(hw, struct ifcvf_adapter, vf);
}
+int ifcvf_set_vq_vector(struct ifcvf_hw *hw, u16 qid, int vector)
+{
+ struct virtio_pci_common_cfg __iomem *cfg = hw->common_cfg;
+ struct ifcvf_adapter *ifcvf = vf_to_adapter(hw);
+
+ ifc_iowrite16(qid, &cfg->queue_select);
+ ifc_iowrite16(vector, &cfg->queue_msix_vector);
+ if (ifc_ioread16(&cfg->queue_msix_vector) == VIRTIO_MSI_NO_VECTOR) {
+ IFCVF_ERR(ifcvf->pdev, "No msix vector for queue %u\n", qid);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int ifcvf_set_config_vector(struct ifcvf_hw *hw, int vector)
+{
+ struct virtio_pci_common_cfg __iomem *cfg = hw->common_cfg;
+ struct ifcvf_adapter *ifcvf = vf_to_adapter(hw);
+
+ cfg = hw->common_cfg;
+ ifc_iowrite16(vector, &cfg->msix_config);
+ if (ifc_ioread16(&cfg->msix_config) == VIRTIO_MSI_NO_VECTOR) {
+ IFCVF_ERR(ifcvf->pdev, "No msix vector for device config\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static void __iomem *get_cap_addr(struct ifcvf_hw *hw,
struct virtio_pci_cap *cap)
{
diff --git a/drivers/vdpa/ifcvf/ifcvf_base.h b/drivers/vdpa/ifcvf/ifcvf_base.h
index c924a7673afb..1d5431040d7d 100644
--- a/drivers/vdpa/ifcvf/ifcvf_base.h
+++ b/drivers/vdpa/ifcvf/ifcvf_base.h
@@ -157,4 +157,6 @@ u16 ifcvf_get_vq_state(struct ifcvf_hw *hw, u16 qid);
int ifcvf_set_vq_state(struct ifcvf_hw *hw, u16 qid, u16 num);
struct ifcvf_adapter *vf_to_adapter(struct ifcvf_hw *hw);
int ifcvf_probed_virtio_net(struct ifcvf_hw *hw);
+int ifcvf_set_vq_vector(struct ifcvf_hw *hw, u16 qid, int vector);
+int ifcvf_set_config_vector(struct ifcvf_hw *hw, int vector);
#endif /* _IFCVF_H_ */
--
2.27.0
next prev parent reply other threads:[~2022-01-10 5:26 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-10 5:18 [PATCH 0/7] Supoort shared irq for virtqueues Zhu Lingshan
2022-01-10 5:18 ` [PATCH 1/7] vDPA/ifcvf: implement IO read/write helpers in the header file Zhu Lingshan
2022-01-10 5:18 ` Zhu Lingshan [this message]
2022-01-10 6:15 ` [PATCH 2/7] vDPA/ifcvf: introduce new helpers to set config vector and vq vectors Michael S. Tsirkin
2022-01-10 5:18 ` [PATCH 3/7] vDPA/ifcvf: implement device MSIX vector allocation helper Zhu Lingshan
2022-01-10 6:12 ` Michael S. Tsirkin
2022-01-10 5:18 ` [PATCH 4/7] vDPA/ifcvf: implement shared irq handlers for vqs Zhu Lingshan
2022-01-10 6:10 ` Michael S. Tsirkin
2022-01-10 5:18 ` [PATCH 5/7] vDPA/ifcvf: irq request helpers for both shared and per_vq irq Zhu Lingshan
2022-01-10 6:09 ` Michael S. Tsirkin
2022-01-10 5:18 ` [PATCH 6/7] vDPA/ifcvf: implement config interrupt request helper Zhu Lingshan
2022-01-10 6:07 ` Michael S. Tsirkin
2022-01-10 5:18 ` [PATCH 7/7] vDPA/ifcvf: improve irq requester, to handle per_vq/shared/config irq Zhu Lingshan
2022-01-10 6:04 ` Michael S. Tsirkin
[not found] ` <bc210134-4b1c-1b23-47f3-c90fb4b91b65@intel.com>
[not found] ` <d7610c1c-611f-86e2-5330-c4783db078f5@intel.com>
2022-01-13 9:52 ` Michael S. Tsirkin
2022-01-13 10:10 ` Zhu, Lingshan
2022-01-13 10:29 ` Michael S. Tsirkin
[not found] ` <7546243d-1561-51fb-55d3-fe0ff1651e48@intel.com>
2022-01-14 13:36 ` Michael S. Tsirkin
2022-01-18 3:07 ` Zhu, Lingshan
2022-01-18 8:07 ` Michael S. Tsirkin
2022-01-13 9:54 ` Michael S. Tsirkin
2022-01-10 6:05 ` [PATCH 0/7] Supoort shared irq for virtqueues Michael S. Tsirkin
2022-01-13 10:30 ` Michael S. Tsirkin
-- strict thread matches above, loose matches on Subject: below --
2022-01-10 5:19 Zhu Lingshan
2022-01-10 5:19 ` [PATCH 2/7] vDPA/ifcvf: introduce new helpers to set config vector and vq vectors Zhu Lingshan
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