Commit 04c6ad8f authored by Zhu Lingshan's avatar Zhu Lingshan Committed by Michael S. Tsirkin
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vDPA/ifcvf: record virtio notify base 



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

Signed-off-by: default avatarZhu Lingshan <lingshan.zhu@intel.com>
Acked-by: default avatarJason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20210602084550.289599-2-lingshan.zhu@intel.com


Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent e22626a8

drivers/vdpa/ifcvf/ifcvf_base.c

+4 −0
Original line number Diff line number Diff line
@@ -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 @@ int ifcvf_init_hw(struct ifcvf_hw *hw, struct pci_dev *pdev) 
		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];

drivers/vdpa/ifcvf/ifcvf_base.h

+2 −0
Original line number Diff line number Diff line
@@ -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;