From 91b74fb713b93ef7a747fbf65251972735b8ab78 Mon Sep 17 00:00:00 2001 From: Alaa Hleihel Date: Tue, 12 May 2020 10:53:41 -0400 Subject: [PATCH 135/312] [netdrv] net/mlx5: Expose vDPA emulation device capabilities Message-id: <20200512105530.4207-16-ahleihel@redhat.com> Patchwork-id: 306886 Patchwork-instance: patchwork O-Subject: [RHEL8.3 BZ 1789382 015/124] net/mlx5: Expose vDPA emulation device capabilities Bugzilla: 1789382 RH-Acked-by: Tony Camuso RH-Acked-by: Kamal Heib RH-Acked-by: Jarod Wilson Bugzilla: http://bugzilla.redhat.com/1789382 Upstream: v5.6-rc1 commit ca1992c62cadb6c8e1e1b47e197b550f3cd89b76 Author: Yishai Hadas Date: Thu Dec 12 13:09:25 2019 +0200 net/mlx5: Expose vDPA emulation device capabilities Expose vDPA emulation device capabilities from the core layer. It includes reading the capabilities from the firmware and exposing helper functions to access the data. Signed-off-by: Yishai Hadas Reviewed-by: Shahaf Shuler Signed-off-by: Leon Romanovsky Signed-off-by: Alaa Hleihel Signed-off-by: Frantisek Hrbata --- drivers/net/ethernet/mellanox/mlx5/core/fw.c | 7 +++++++ include/linux/mlx5/device.h | 9 +++++++++ 2 files changed, 16 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw.c b/drivers/net/ethernet/mellanox/mlx5/core/fw.c index a19790dee7b2..c375edfe528c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fw.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fw.c @@ -245,6 +245,13 @@ int mlx5_query_hca_caps(struct mlx5_core_dev *dev) return err; } + if (MLX5_CAP_GEN_64(dev, general_obj_types) & + MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_NET_Q) { + err = mlx5_core_get_caps(dev, MLX5_CAP_VDPA_EMULATION); + if (err) + return err; + } + return 0; } diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h index f3773e8536bb..62c9c47affb3 100644 --- a/include/linux/mlx5/device.h +++ b/include/linux/mlx5/device.h @@ -1096,6 +1096,7 @@ enum mlx5_cap_type { MLX5_CAP_DEV_MEM, MLX5_CAP_RESERVED_16, MLX5_CAP_TLS, + MLX5_CAP_VDPA_EMULATION = 0x13, MLX5_CAP_DEV_EVENT = 0x14, /* NUM OF CAP Types */ MLX5_CAP_NUM @@ -1288,6 +1289,14 @@ enum mlx5_qcam_feature_groups { #define MLX5_CAP_DEV_EVENT(mdev, cap)\ MLX5_ADDR_OF(device_event_cap, (mdev)->caps.hca_cur[MLX5_CAP_DEV_EVENT], cap) +#define MLX5_CAP_DEV_VDPA_EMULATION(mdev, cap)\ + MLX5_GET(device_virtio_emulation_cap, \ + (mdev)->caps.hca_cur[MLX5_CAP_VDPA_EMULATION], cap) + +#define MLX5_CAP64_DEV_VDPA_EMULATION(mdev, cap)\ + MLX5_GET64(device_virtio_emulation_cap, \ + (mdev)->caps.hca_cur[MLX5_CAP_VDPA_EMULATION], cap) + enum { MLX5_CMD_STAT_OK = 0x0, MLX5_CMD_STAT_INT_ERR = 0x1, -- 2.13.6