Re: [PATCH V2 2/3] vDPA/ifcvf: enable Intel C5000X-PL virtio-block for vDPA

[Stefano Garzarella <sgarzare@xxxxxxxxxx>]

On Thu, Apr 15, 2021 at 05:53:35PM +0800, Zhu Lingshan wrote:
> This commit enabled Intel FPGA SmartNIC C5000X-PL virtio-block
> for vDPA.
>
> Signed-off-by: Zhu Lingshan <lingshan.zhu@xxxxxxxxx>
> ---
> drivers/vdpa/ifcvf/ifcvf_base.h |  8 +++++++-
> drivers/vdpa/ifcvf/ifcvf_main.c | 10 +++++++++-
> 2 files changed, 16 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/vdpa/ifcvf/ifcvf_base.h b/drivers/vdpa/ifcvf/ifcvf_base.h
> index 1c04cd256fa7..0111bfdeb342 100644
> --- a/drivers/vdpa/ifcvf/ifcvf_base.h
> +++ b/drivers/vdpa/ifcvf/ifcvf_base.h
> @@ -15,6 +15,7 @@
> #include <linux/pci_regs.h>
> #include <linux/vdpa.h>
> #include <uapi/linux/virtio_net.h>
> +#include <uapi/linux/virtio_blk.h>
> #include <uapi/linux/virtio_config.h>
> #include <uapi/linux/virtio_pci.h>
>
> @@ -28,7 +29,12 @@
> #define C5000X_PL_SUBSYS_VENDOR_ID	0x8086
> #define C5000X_PL_SUBSYS_DEVICE_ID	0x0001
>
> -#define IFCVF_SUPPORTED_FEATURES \
> +#define C5000X_PL_BLK_VENDOR_ID		0x1AF4
> +#define C5000X_PL_BLK_DEVICE_ID		0x1001
> +#define C5000X_PL_BLK_SUBSYS_VENDOR_ID	0x8086
> +#define C5000X_PL_BLK_SUBSYS_DEVICE_ID	0x0002
> +
> +#define IFCVF_NET_SUPPORTED_FEATURES \
> 		((1ULL << VIRTIO_NET_F_MAC)			| \
> 		 (1ULL << VIRTIO_F_ANY_LAYOUT)			| \
> 		 (1ULL << VIRTIO_F_VERSION_1)			| \
> diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c
> index 469a9b5737b7..cea1313b1a3f 100644
> --- a/drivers/vdpa/ifcvf/ifcvf_main.c
> +++ b/drivers/vdpa/ifcvf/ifcvf_main.c
> @@ -171,7 +171,11 @@ static u64 ifcvf_vdpa_get_features(struct vdpa_device *vdpa_dev)
> 	struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
> 	u64 features;
>
> -	features = ifcvf_get_features(vf) & IFCVF_SUPPORTED_FEATURES;
> +	if (vf->dev_type == VIRTIO_ID_NET)
> +		features = ifcvf_get_features(vf) & IFCVF_NET_SUPPORTED_FEATURES;
> +
> +	if (vf->dev_type == VIRTIO_ID_BLOCK)
> +		features = ifcvf_get_features(vf);

Should we put a warning here too otherwise feature could be seen 
unassigned?

Thanks,
Stefano

> 	return features;
> }
> @@ -517,6 +521,10 @@ static struct pci_device_id ifcvf_pci_ids[] = {
> 			 C5000X_PL_DEVICE_ID,
> 			 C5000X_PL_SUBSYS_VENDOR_ID,
> 			 C5000X_PL_SUBSYS_DEVICE_ID) },
> +	{ PCI_DEVICE_SUB(C5000X_PL_BLK_VENDOR_ID,
> +			 C5000X_PL_BLK_DEVICE_ID,
> +			 C5000X_PL_BLK_SUBSYS_VENDOR_ID,
> +			 C5000X_PL_BLK_SUBSYS_DEVICE_ID) },
>
> 	{ 0 },
> };
> --
> 2.27.0

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