vdpa/mlx5: Add support library for mlx5 VDPA implementation (29064bfd) · Commits · 戴 / test

drivers/vdpa/Kconfig

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		@@ -28,4 +28,13 @@ config IFCVF
		To compile this driver as a module, choose M here: the module will
		be called ifcvf.

		config MLX5_VDPA
		bool "MLX5 VDPA support library for ConnectX devices"
		depends on MLX5_CORE
		default n
		help
		Support library for Mellanox VDPA drivers. Provides code that is
		common for all types of VDPA drivers. The following drivers are planned:
		net, block.

		endif # VDPA

drivers/vdpa/Makefile

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		@@ -2,3 +2,4 @@
		obj-$(CONFIG_VDPA) += vdpa.o
		obj-$(CONFIG_VDPA_SIM) += vdpa_sim/
		obj-$(CONFIG_IFCVF) += ifcvf/
		obj-$(CONFIG_MLX5_VDPA) += mlx5/

drivers/vdpa/mlx5/Makefile

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		obj-$(CONFIG_MLX5_VDPA) += core/resources.o

drivers/vdpa/mlx5/core/Makefile

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		obj-y += resources.o

drivers/vdpa/mlx5/core/mlx5_vdpa.h

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		/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
		/* Copyright (c) 2020 Mellanox Technologies Ltd. */

		#ifndef __MLX5_VDPA_H__
		#define __MLX5_VDPA_H__

		#include <linux/vdpa.h>
		#include <linux/mlx5/driver.h>

		struct mlx5_vdpa_resources {
		u32 pdn;
		struct mlx5_uars_page *uar;
		void __iomem *kick_addr;
		u16 uid;
		u32 null_mkey;
		bool valid;
		};

		struct mlx5_vdpa_dev {
		struct vdpa_device vdev;
		struct mlx5_core_dev *mdev;
		struct mlx5_vdpa_resources res;

		u64 mlx_features;
		u64 actual_features;
		u8 status;
		u32 max_vqs;
		u32 generation;
		};

		int mlx5_vdpa_alloc_pd(struct mlx5_vdpa_dev dev, u32 pdn, u16 uid);
		int mlx5_vdpa_dealloc_pd(struct mlx5_vdpa_dev *dev, u32 pdn, u16 uid);
		int mlx5_vdpa_get_null_mkey(struct mlx5_vdpa_dev dev, u32 null_mkey);
		int mlx5_vdpa_create_tis(struct mlx5_vdpa_dev mvdev, void in, u32 *tisn);
		void mlx5_vdpa_destroy_tis(struct mlx5_vdpa_dev *mvdev, u32 tisn);
		int mlx5_vdpa_create_rqt(struct mlx5_vdpa_dev mvdev, void in, int inlen, u32 *rqtn);
		void mlx5_vdpa_destroy_rqt(struct mlx5_vdpa_dev *mvdev, u32 rqtn);
		int mlx5_vdpa_create_tir(struct mlx5_vdpa_dev mvdev, void in, u32 *tirn);
		void mlx5_vdpa_destroy_tir(struct mlx5_vdpa_dev *mvdev, u32 tirn);
		int mlx5_vdpa_alloc_transport_domain(struct mlx5_vdpa_dev mvdev, u32 tdn);
		void mlx5_vdpa_dealloc_transport_domain(struct mlx5_vdpa_dev *mvdev, u32 tdn);
		int mlx5_vdpa_alloc_resources(struct mlx5_vdpa_dev *mvdev);
		void mlx5_vdpa_free_resources(struct mlx5_vdpa_dev *mvdev);

		#define mlx5_vdpa_warn(__dev, format, ...) \
		dev_warn((__dev)->mdev->device, "%s:%d:(pid %d) warning: " format, __func__, __LINE__, \
		current->pid, ##__VA_ARGS__)

		#define mlx5_vdpa_info(__dev, format, ...) \
		dev_info((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \
		current->pid, ##__VA_ARGS__)

		#define mlx5_vdpa_dbg(__dev, format, ...) \
		dev_debug((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \
		current->pid, ##__VA_ARGS__)

		#endif /* __MLX5_VDPA_H__ */

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