From: Zhu Lingshan <lingshan.zhu@intel.com>
To: jasowang@redhat.com, mst@redhat.com
Cc: virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, kvm@vger.kernel.org,
Zhu Lingshan <lingshan.zhu@intel.com>
Subject: [PATCH V3 1/2] vDPA/ifcvf: record virtio notify base
Date: Tue, 1 Jun 2021 14:28:49 +0800 [thread overview]
Message-ID: <20210601062850.4547-2-lingshan.zhu@intel.com> (raw)
In-Reply-To: <20210601062850.4547-1-lingshan.zhu@intel.com>
This commit records virtio notify base physical addr and
calculate doorbell physical address for vqs.
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
---
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
next prev parent reply other threads:[~2021-06-01 6:34 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-01 6:28 [PATCH V3 0/2] vDPA/ifcvf: implement doorbell mapping feature Zhu Lingshan
2021-06-01 6:28 ` Zhu Lingshan [this message]
2021-06-01 8:53 ` [PATCH V3 1/2] vDPA/ifcvf: record virtio notify base Jason Wang
2021-06-01 6:28 ` [PATCH V3 2/2] vDPA/ifcvf: implement doorbell mapping for ifcvf Zhu Lingshan
2021-06-01 8:50 ` Jason Wang
2021-06-01 8:56 ` Zhu, Lingshan
2021-06-01 8:57 ` Jason Wang
2021-06-01 8:58 ` Zhu, Lingshan
2021-06-01 9:03 ` Zhu, Lingshan
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