netdev - [PATCH V2 vfio 02/11] net/mlx5: Query ADV

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Message-ID: <20220714081251.240584-3-yishaih@nvidia.com>
Date:   Thu, 14 Jul 2022 11:12:42 +0300
From:   Yishai Hadas <yishaih@...dia.com>
To:     <alex.williamson@...hat.com>, <jgg@...dia.com>
CC:     <saeedm@...dia.com>, <kvm@...r.kernel.org>,
        <netdev@...r.kernel.org>, <kuba@...nel.org>,
        <kevin.tian@...el.com>, <joao.m.martins@...cle.com>,
        <leonro@...dia.com>, <yishaih@...dia.com>, <maorg@...dia.com>,
        <cohuck@...hat.com>
Subject: [PATCH V2 vfio 02/11] net/mlx5: Query ADV_VIRTUALIZATION capabilities

Query ADV_VIRTUALIZATION capabilities which provide information for
advanced virtualization related features.

Current capabilities refer to the page tracker object which is used for
tracking the pages that are dirtied by the device.

Signed-off-by: Yishai Hadas <yishaih@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/fw.c   | 6 ++++++
 drivers/net/ethernet/mellanox/mlx5/core/main.c | 1 +
 include/linux/mlx5/device.h                    | 9 +++++++++
 3 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 cfb8bedba512..45b9891b7947 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw.c
@@ -273,6 +273,12 @@ int mlx5_query_hca_caps(struct mlx5_core_dev *dev)
 			return err;
 	}
 
+	if (MLX5_CAP_GEN(dev, adv_virtualization)) {
+		err = mlx5_core_get_caps(dev, MLX5_CAP_ADV_VIRTUALIZATION);
+		if (err)
+			return err;
+	}
+
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index c9b4e50a593e..5ecaaee2624c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -1432,6 +1432,7 @@ static const int types[] = {
 	MLX5_CAP_IPSEC,
 	MLX5_CAP_PORT_SELECTION,
 	MLX5_CAP_DEV_SHAMPO,
+	MLX5_CAP_ADV_VIRTUALIZATION,
 };
 
 static void mlx5_hca_caps_free(struct mlx5_core_dev *dev)
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index 604b85dd770a..96ea0c1796f8 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -1204,6 +1204,7 @@ enum mlx5_cap_type {
 	MLX5_CAP_DEV_SHAMPO = 0x1d,
 	MLX5_CAP_GENERAL_2 = 0x20,
 	MLX5_CAP_PORT_SELECTION = 0x25,
+	MLX5_CAP_ADV_VIRTUALIZATION = 0x26,
 	/* NUM OF CAP Types */
 	MLX5_CAP_NUM
 };
@@ -1369,6 +1370,14 @@ enum mlx5_qcam_feature_groups {
 	MLX5_GET(port_selection_cap, \
 		 mdev->caps.hca[MLX5_CAP_PORT_SELECTION]->max, cap)
 
+#define MLX5_CAP_ADV_VIRTUALIZATION(mdev, cap) \
+	MLX5_GET(adv_virtualization_cap, \
+		 mdev->caps.hca[MLX5_CAP_ADV_VIRTUALIZATION]->cur, cap)
+
+#define MLX5_CAP_ADV_VIRTUALIZATION_MAX(mdev, cap) \
+	MLX5_GET(adv_virtualization_cap, \
+		 mdev->caps.hca[MLX5_CAP_ADV_VIRTUALIZATION]->max, cap)
+
 #define MLX5_CAP_FLOWTABLE_PORT_SELECTION(mdev, cap) \
 	MLX5_CAP_PORT_SELECTION(mdev, flow_table_properties_port_selection.cap)
 
-- 
2.18.1