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ifcvf: implement config interrupt in IFCVF 

This commit implements config interrupt support
in IFC VF

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/1591352835-22441-6-git-send-email-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
alistair/sunxi64-5.8
Zhu Lingshan 2020-06-05 18:27:15 +08:00 committed by Michael S. Tsirkin
parent e0136c16fa
commit e7991f376a
3 changed files with 29 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/vdpa/ifcvf/ifcvf_base.c
View File

@ -185,6 +185,9 @@ void ifcvf_set_status(struct ifcvf_hw *hw, u8 status)
void ifcvf_reset(struct ifcvf_hw *hw)
{
hw->config_cb.callback = NULL;
hw->config_cb.private = NULL;
ifcvf_set_status(hw, 0);
/* flush set_status, make sure VF is stopped, reset */
ifcvf_get_status(hw);

4
drivers/vdpa/ifcvf/ifcvf_base.h
View File

@ -27,6 +27,7 @@
((1ULL << VIRTIO_NET_F_MAC) | \
(1ULL << VIRTIO_F_ANY_LAYOUT) | \
(1ULL << VIRTIO_F_VERSION_1) | \
(1ULL << VIRTIO_NET_F_STATUS) | \
(1ULL << VIRTIO_F_ORDER_PLATFORM) | \
(1ULL << VIRTIO_F_IOMMU_PLATFORM) | \
(1ULL << VIRTIO_NET_F_MRG_RXBUF))
@ -81,6 +82,9 @@ struct ifcvf_hw {
void __iomem *net_cfg;
struct vring_info vring[IFCVF_MAX_QUEUE_PAIRS * 2];
void __iomem * const *base;
char config_msix_name[256];
struct vdpa_callback config_cb;
};
struct ifcvf_adapter {

23
drivers/vdpa/ifcvf/ifcvf_main.c
View File

@ -18,6 +18,16 @@
#define DRIVER_AUTHOR "Intel Corporation"
#define IFCVF_DRIVER_NAME "ifcvf"
static irqreturn_t ifcvf_config_changed(int irq, void *arg)
{
struct ifcvf_hw *vf = arg;
if (vf->config_cb.callback)
return vf->config_cb.callback(vf->config_cb.private);
return IRQ_HANDLED;
}
static irqreturn_t ifcvf_intr_handler(int irq, void *arg)
{
struct vring_info *vring = arg;
@ -59,6 +69,14 @@ static int ifcvf_request_irq(struct ifcvf_adapter *adapter)
return ret;
}
snprintf(vf->config_msix_name, 256, "ifcvf[%s]-config\n",
pci_name(pdev));
vector = 0;
irq = pci_irq_vector(pdev, vector);
ret = devm_request_irq(&pdev->dev, irq,
ifcvf_config_changed, 0,
vf->config_msix_name, vf);
for (i = 0; i < IFCVF_MAX_QUEUE_PAIRS * 2; i++) {
snprintf(vf->vring[i].msix_name, 256, "ifcvf[%s]-%d\n",
pci_name(pdev), i);
@ -328,7 +346,10 @@ static void ifcvf_vdpa_set_config(struct vdpa_device *vdpa_dev,
static void ifcvf_vdpa_set_config_cb(struct vdpa_device *vdpa_dev,
struct vdpa_callback *cb)
{
/* We don't support config interrupt */
struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
vf->config_cb.callback = cb->callback;
vf->config_cb.private = cb->private;
}
/*