diff options
| author | Zhu Lingshan <lingshan.zhu@intel.com> | 2021-08-18 12:57:13 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-09-05 23:23:07 +0300 |
| commit | 2ddae773c93bbcb0678ae819551f1750a505edec (patch) | |
| tree | 107d8cb8ca233fc048ef2407d1ee87f7e26ded0c /drivers/vdpa/ifcvf/ifcvf_main.c | |
| parent | 6b5df347c6482f57b0d8f0569b86fb8fcd90d168 (diff) | |
| download | linux-2ddae773c93bbcb0678ae819551f1750a505edec.tar.xz | |
vDPA/ifcvf: detect and use the onboard number of queues directly
To enable this multi-queue feature for ifcvf, this commit
intends to detect and use the onboard number of queues
directly than IFCVF_MAX_QUEUE_PAIRS = 1 (removed)
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Link: https://lore.kernel.org/r/20210818095714.3220-2-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'drivers/vdpa/ifcvf/ifcvf_main.c')
| -rw-r--r-- | drivers/vdpa/ifcvf/ifcvf_main.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c index e9a92b31dcc5..37675c93b1ff 100644 --- a/drivers/vdpa/ifcvf/ifcvf_main.c +++ b/drivers/vdpa/ifcvf/ifcvf_main.c @@ -63,9 +63,13 @@ static int ifcvf_request_irq(struct ifcvf_adapter *adapter) struct pci_dev *pdev = adapter->pdev; struct ifcvf_hw *vf = &adapter->vf; int vector, i, ret, irq; + u16 max_intr; - ret = pci_alloc_irq_vectors(pdev, IFCVF_MAX_INTR, - IFCVF_MAX_INTR, PCI_IRQ_MSIX); + /* all queues and config interrupt */ + max_intr = vf->nr_vring + 1; + + ret = pci_alloc_irq_vectors(pdev, max_intr, + max_intr, PCI_IRQ_MSIX); if (ret < 0) { IFCVF_ERR(pdev, "Failed to alloc IRQ vectors\n"); return ret; @@ -83,7 +87,7 @@ static int ifcvf_request_irq(struct ifcvf_adapter *adapter) return ret; } - for (i = 0; i < IFCVF_MAX_QUEUE_PAIRS * 2; i++) { + for (i = 0; i < vf->nr_vring; i++) { snprintf(vf->vring[i].msix_name, 256, "ifcvf[%s]-%d\n", pci_name(pdev), i); vector = i + IFCVF_MSI_QUEUE_OFF; @@ -112,7 +116,6 @@ static int ifcvf_start_datapath(void *private) u8 status; int ret; - vf->nr_vring = IFCVF_MAX_QUEUE_PAIRS * 2; ret = ifcvf_start_hw(vf); if (ret < 0) { status = ifcvf_get_status(vf); @@ -128,7 +131,7 @@ static int ifcvf_stop_datapath(void *private) struct ifcvf_hw *vf = ifcvf_private_to_vf(private); int i; - for (i = 0; i < IFCVF_MAX_QUEUE_PAIRS * 2; i++) + for (i = 0; i < vf->nr_vring; i++) vf->vring[i].cb.callback = NULL; ifcvf_stop_hw(vf); @@ -141,7 +144,7 @@ static void ifcvf_reset_vring(struct ifcvf_adapter *adapter) struct ifcvf_hw *vf = ifcvf_private_to_vf(adapter); int i; - for (i = 0; i < IFCVF_MAX_QUEUE_PAIRS * 2; i++) { + for (i = 0; i < vf->nr_vring; i++) { vf->vring[i].last_avail_idx = 0; vf->vring[i].desc = 0; vf->vring[i].avail = 0; @@ -227,7 +230,7 @@ static void ifcvf_vdpa_set_status(struct vdpa_device *vdpa_dev, u8 status) if ((status_old & VIRTIO_CONFIG_S_DRIVER_OK) && !(status & VIRTIO_CONFIG_S_DRIVER_OK)) { ifcvf_stop_datapath(adapter); - ifcvf_free_irq(adapter, IFCVF_MAX_QUEUE_PAIRS * 2); + ifcvf_free_irq(adapter, vf->nr_vring); } if (status == 0) { @@ -526,13 +529,13 @@ static int ifcvf_vdpa_dev_add(struct vdpa_mgmt_dev *mdev, const char *name) goto err; } - for (i = 0; i < IFCVF_MAX_QUEUE_PAIRS * 2; i++) + for (i = 0; i < vf->nr_vring; i++) vf->vring[i].irq = -EINVAL; vf->hw_features = ifcvf_get_hw_features(vf); adapter->vdpa.mdev = &ifcvf_mgmt_dev->mdev; - ret = _vdpa_register_device(&adapter->vdpa, IFCVF_MAX_QUEUE_PAIRS * 2); + ret = _vdpa_register_device(&adapter->vdpa, vf->nr_vring); if (ret) { IFCVF_ERR(pdev, "Failed to register to vDPA bus"); goto err; |