vDPA/ifcvf: record virtio notify base

This commit records virtio notify base physical addr and
calculate doorbell physical address for vqs.

Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20210602084550.289599-2-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/drivers/vdpa/ifcvf/ifcvf_base.c b/drivers/vdpa/ifcvf/ifcvf_base.c
index 1a661ab..6e197fe 100644 (file)
--- a/drivers/vdpa/ifcvf/ifcvf_base.c
+++ b/drivers/vdpa/ifcvf/ifcvf_base.c
@@ -133,6 +133,8 @@ int ifcvf_init_hw(struct ifcvf_hw *hw, struct pci_dev *pdev)
                                              &hw->notify_off_multiplier);
                        hw->notify_bar = cap.bar;
                        hw->notify_base = get_cap_addr(hw, &cap);
+                       hw->notify_base_pa = pci_resource_start(pdev, cap.bar) +
+                                       le32_to_cpu(cap.offset);
                        IFCVF_DBG(pdev, "hw->notify_base = %p\n",
                                  hw->notify_base);
                        break;
@@ -161,6 +163,8 @@ next:
                notify_off = ifc_ioread16(&hw->common_cfg->queue_notify_off);
                hw->vring[i].notify_addr = hw->notify_base +
                        notify_off * hw->notify_off_multiplier;
+               hw->vring[i].notify_pa = hw->notify_base_pa +
+                       notify_off * hw->notify_off_multiplier;
        }
 
        hw->lm_cfg = hw->base[IFCVF_LM_BAR];

diff --git a/drivers/vdpa/ifcvf/ifcvf_base.h b/drivers/vdpa/ifcvf/ifcvf_base.h
index 0111bfd..447f4ad 100644 (file)
--- a/drivers/vdpa/ifcvf/ifcvf_base.h
+++ b/drivers/vdpa/ifcvf/ifcvf_base.h
@@ -73,6 +73,7 @@ struct vring_info {
        u16 last_avail_idx;
        bool ready;
        void __iomem *notify_addr;
+       phys_addr_t notify_pa;
        u32 irq;
        struct vdpa_callback cb;
        char msix_name[256];
@@ -87,6 +88,7 @@ struct ifcvf_hw {
        u8 notify_bar;
        /* Notificaiton bar address */
        void __iomem *notify_base;
+       phys_addr_t notify_base_pa;
        u32 notify_off_multiplier;
        u64 req_features;
        u64 hw_features;