[PATCH V2 1/2] vDPA/ifcvf: record virtio notify base
From: Zhu Lingshan <hidden>
Date: 2021-05-14 10:04:49
Also in:
kvm
Subsystem:
intel virtio data path accelerator, the rest, virtio core · Maintainers:
Zhu Lingshan, Linus Torvalds, "Michael S. Tsirkin", Jason Wang
This commit records virtio notify base physical addr and calculate doorbell physical address for vqs. Signed-off-by: Zhu Lingshan <redacted> --- drivers/vdpa/ifcvf/ifcvf_base.c | 4 ++++ drivers/vdpa/ifcvf/ifcvf_base.h | 2 ++ 2 files changed, 6 insertions(+)
diff --git a/drivers/vdpa/ifcvf/ifcvf_base.c b/drivers/vdpa/ifcvf/ifcvf_base.c
index 1a661ab45af5..6e197fe0fcf9 100644
--- 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 @@ 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];
diff --git a/drivers/vdpa/ifcvf/ifcvf_base.h b/drivers/vdpa/ifcvf/ifcvf_base.h
index 0111bfdeb342..447f4ad9c0bf 100644
--- 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;
--
2.27.0