diff options
| author | Zhu Lingshan <lingshan.zhu@intel.com> | 2023-05-26 22:52:52 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-06-27 10:47:07 -0400 |
| commit | aeb5ef30bbcc2a4c605f7d44f088113a073c0224 (patch) | |
| tree | 694d3397976771879448702f52ca25c369b2bd1b /drivers/vdpa | |
| parent | 1a252f0391d48733174276247c3d22b8a85a4406 (diff) | |
| download | linux-aeb5ef30bbcc2a4c605f7d44f088113a073c0224.tar.gz | |
vDPA/ifcvf: retire ifcvf_start_datapath and ifcvf_add_status
Rather than former lazy-initialization mechanism,
now the virtqueue operations and driver_features related
ops access the virtio registers directly to take
immediate actions. So ifcvf_start_datapath() should
retire.
ifcvf_add_status() is retierd because we should not change
device status by a vendor driver's decision, this driver should
only set device status which is from virito drivers
upon vdpa_ops.set_status()
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230526145254.39537-4-lingshan.zhu@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa')
| -rw-r--r-- | drivers/vdpa/ifcvf/ifcvf_base.c | 19 | ||||
| -rw-r--r-- | drivers/vdpa/ifcvf/ifcvf_base.h | 1 | ||||
| -rw-r--r-- | drivers/vdpa/ifcvf/ifcvf_main.c | 23 |
3 files changed, 0 insertions, 43 deletions
diff --git a/drivers/vdpa/ifcvf/ifcvf_base.c b/drivers/vdpa/ifcvf/ifcvf_base.c index 546e923bcd16f..79e313c5e10eb 100644 --- a/drivers/vdpa/ifcvf/ifcvf_base.c +++ b/drivers/vdpa/ifcvf/ifcvf_base.c @@ -178,15 +178,6 @@ void ifcvf_reset(struct ifcvf_hw *hw) ifcvf_get_status(hw); } -static void ifcvf_add_status(struct ifcvf_hw *hw, u8 status) -{ - if (status != 0) - status |= ifcvf_get_status(hw); - - ifcvf_set_status(hw, status); - ifcvf_get_status(hw); -} - u64 ifcvf_get_hw_features(struct ifcvf_hw *hw) { struct virtio_pci_common_cfg __iomem *cfg = hw->common_cfg; @@ -387,16 +378,6 @@ static void ifcvf_hw_disable(struct ifcvf_hw *hw) } } -int ifcvf_start_hw(struct ifcvf_hw *hw) -{ - ifcvf_add_status(hw, VIRTIO_CONFIG_S_ACKNOWLEDGE); - ifcvf_add_status(hw, VIRTIO_CONFIG_S_DRIVER); - - ifcvf_add_status(hw, VIRTIO_CONFIG_S_DRIVER_OK); - - return 0; -} - void ifcvf_stop_hw(struct ifcvf_hw *hw) { ifcvf_hw_disable(hw); diff --git a/drivers/vdpa/ifcvf/ifcvf_base.h b/drivers/vdpa/ifcvf/ifcvf_base.h index cb19196c3ece2..d34d3bc0dbf4c 100644 --- a/drivers/vdpa/ifcvf/ifcvf_base.h +++ b/drivers/vdpa/ifcvf/ifcvf_base.h @@ -110,7 +110,6 @@ struct ifcvf_vdpa_mgmt_dev { }; int ifcvf_init_hw(struct ifcvf_hw *hw, struct pci_dev *dev); -int ifcvf_start_hw(struct ifcvf_hw *hw); void ifcvf_stop_hw(struct ifcvf_hw *hw); void ifcvf_notify_queue(struct ifcvf_hw *hw, u16 qid); void ifcvf_read_dev_config(struct ifcvf_hw *hw, u64 offset, diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c index 4588484bd53d3..968687159e444 100644 --- a/drivers/vdpa/ifcvf/ifcvf_main.c +++ b/drivers/vdpa/ifcvf/ifcvf_main.c @@ -346,22 +346,6 @@ static int ifcvf_request_irq(struct ifcvf_hw *vf) return 0; } -static int ifcvf_start_datapath(struct ifcvf_adapter *adapter) -{ - struct ifcvf_hw *vf = adapter->vf; - u8 status; - int ret; - - ret = ifcvf_start_hw(vf); - if (ret < 0) { - status = ifcvf_get_status(vf); - status |= VIRTIO_CONFIG_S_FAILED; - ifcvf_set_status(vf, status); - } - - return ret; -} - static int ifcvf_stop_datapath(struct ifcvf_adapter *adapter) { struct ifcvf_hw *vf = adapter->vf; @@ -452,13 +436,11 @@ static u8 ifcvf_vdpa_get_status(struct vdpa_device *vdpa_dev) static void ifcvf_vdpa_set_status(struct vdpa_device *vdpa_dev, u8 status) { - struct ifcvf_adapter *adapter; struct ifcvf_hw *vf; u8 status_old; int ret; vf = vdpa_to_vf(vdpa_dev); - adapter = vdpa_to_adapter(vdpa_dev); status_old = ifcvf_get_status(vf); if (status_old == status) @@ -473,11 +455,6 @@ static void ifcvf_vdpa_set_status(struct vdpa_device *vdpa_dev, u8 status) ifcvf_set_status(vf, status); return; } - - if (ifcvf_start_datapath(adapter) < 0) - IFCVF_ERR(adapter->pdev, - "Failed to set ifcvf vdpa status %u\n", - status); } ifcvf_set_status(vf, status); |