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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: 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>
This commit is contained in:
Zhu Lingshan 2021-06-02 16:45:49 +08:00 committed by Michael S. Tsirkin
parent e22626a876
commit 04c6ad8f22
2 changed files with 6 additions and 0 deletions
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4
drivers/vdpa/ifcvf/ifcvf_base.c
View File

@ -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];

2
drivers/vdpa/ifcvf/ifcvf_base.h
View File

@ -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;