kernel/linux.git/drivers/vdpa/ifcvf, branch v6.7

vDPA/ifcvf: implement new accessors for vq_state

2023-07-03T16:15:12+00:00

This commit implements a better layout of the live migration bar, therefore the accessors for virtqueue state have been refactored. This commit also add a comment to the probing-ids list, indicating this driver drives F2000X-PL virtio-net Signed-off-by: Zhu Lingshan Message-Id: <20230612151420.1019504-4-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin

vDPA/ifcvf: detect and report max allowed vq size

2023-07-03T16:15:12+00:00

Rather than a hardcode, this commit detects and reports the max value of allowed size of the virtqueues Signed-off-by: Zhu Lingshan Message-Id: <20230612151420.1019504-3-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin

vDPA/ifcvf: dynamic allocate vq data stores

2023-07-03T16:15:12+00:00

This commit dynamically allocates the data stores for the virtqueues based on virtio_pci_common_cfg.num_queues. Signed-off-by: Zhu Lingshan Message-Id: <20230612151420.1019504-2-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin

vDPA/ifcvf: a vendor driver should not set _CONFIG_S_FAILED

2023-06-27T14:47:08+00:00

VIRTIO_CONFIG_S_FAILED indicates the guest driver has given up the device due to fatal errors. So it is the guest decision, the vendor driver should not set this status to the device. Signed-off-by: Zhu Lingshan Acked-by: Jason Wang Message-Id: <20230526145254.39537-6-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin

vDPA/ifcvf: synchronize irqs in the reset routine

2023-06-27T14:47:07+00:00

This commit synchronize irqs of the virtqueues and config space in the reset routine. Thus ifcvf_stop() and reset() are refactored as well. This commit renames ifcvf_stop_hw() to ifcvf_stop() Signed-off-by: Zhu Lingshan Acked-by: Jason Wang Message-Id: <20230526145254.39537-5-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin

vDPA/ifcvf: retire ifcvf_start_datapath and ifcvf_add_status

2023-06-27T14:47:07+00:00

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 Acked-by: Jason Wang Message-Id: <20230526145254.39537-4-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin

vDPA/ifcvf: get_driver_features from virtio registers

2023-06-27T14:47:07+00:00

This commit implements a new function ifcvf_get_driver_feature() which read driver_features from virtio registers. To be less ambiguous, ifcvf_set_features() is renamed to ifcvf_set_driver_features(), and ifcvf_get_features() is renamed to ifcvf_get_dev_features() which returns the provisioned vDPA device features. Signed-off-by: Zhu Lingshan Acked-by: Jason Wang Message-Id: <20230526145254.39537-3-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin

vDPA/ifcvf: virt queue ops take immediate actions

2023-06-27T14:47:07+00:00

In this commit, virtqueue operations including: set_vq_num(), set_vq_address(), set_vq_ready() and get_vq_ready() access PCI registers directly to take immediate actions. Signed-off-by: Zhu Lingshan Acked-by: Jason Wang Message-Id: <20230526145254.39537-2-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin

vDPA/ifcvf: implement features provisioning

2023-02-21T00:26:55+00:00

This commit implements features provisioning for ifcvf, that means: 1)checkk whether the provisioned features are supported by the management device 2)vDPA device only presents selected feature bits Examples: a)The management device supported features: $ vdpa mgmtdev show pci/0000:01:00.5 pci/0000:01:00.5: supported_classes net max_supported_vqs 9 dev_features MTU MAC MRG_RXBUF CTRL_VQ MQ ANY_LAYOUT VERSION_1 ACCESS_PLATFORM b)Provision a vDPA device with all supported features: $ vdpa dev add name vdpa0 mgmtdev pci/0000:01:00.5 $ vdpa/vdpa dev config show vdpa0 vdpa0: mac 00:e8:ca:11:be:05 link up link_announce false max_vq_pairs 4 mtu 1500 negotiated_features MRG_RXBUF CTRL_VQ MQ VERSION_1 ACCESS_PLATFORM c)Provision a vDPA device with a subset of the supported features: $ vdpa dev add name vdpa0 mgmtdev pci/0000:01:00.5 device_features 0x300020020 $ vdpa dev config show vdpa0 mac 00:e8:ca:11:be:05 link up link_announce false negotiated_features CTRL_VQ VERSION_1 ACCESS_PLATFORM Signed-off-by: Zhu Lingshan Message-Id: <20221125145724.1129962-13-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin

vDPA/ifcvf: retire ifcvf_private_to_vf

2023-02-21T00:26:55+00:00

This commit retires ifcvf_private_to_vf, because the vf is already a member of the adapter, so it could be easily addressed by adapter->vf. Signed-off-by: Zhu Lingshan Message-Id: <20221125145724.1129962-12-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin