145 lines
4.1 KiB
C
145 lines
4.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/* Copyright (c) 2020 Mellanox Technologies Ltd. */
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#ifndef __MLX5_VDPA_H__
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#define __MLX5_VDPA_H__
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#include <linux/etherdevice.h>
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#include <linux/vringh.h>
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#include <linux/vdpa.h>
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#include <linux/mlx5/driver.h>
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#define MLX5V_ETH_HARD_MTU (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)
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struct mlx5_vdpa_direct_mr {
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u64 start;
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u64 end;
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u32 perm;
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u32 mr;
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struct sg_table sg_head;
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int log_size;
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int nsg;
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int nent;
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struct list_head list;
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u64 offset;
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};
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struct mlx5_vdpa_mr {
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u32 mkey;
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/* list of direct MRs descendants of this indirect mr */
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struct list_head head;
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unsigned long num_directs;
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unsigned long num_klms;
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struct vhost_iotlb *iotlb;
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bool user_mr;
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};
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struct mlx5_vdpa_resources {
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u32 pdn;
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struct mlx5_uars_page *uar;
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void __iomem *kick_addr;
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u64 phys_kick_addr;
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u16 uid;
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u32 null_mkey;
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bool valid;
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};
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struct mlx5_control_vq {
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struct vhost_iotlb *iotlb;
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/* spinlock to synchronize iommu table */
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spinlock_t iommu_lock;
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struct vringh vring;
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bool ready;
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u64 desc_addr;
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u64 device_addr;
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u64 driver_addr;
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struct vdpa_callback event_cb;
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struct vringh_kiov riov;
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struct vringh_kiov wiov;
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unsigned short head;
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unsigned int received_desc;
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unsigned int completed_desc;
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};
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struct mlx5_vdpa_wq_ent {
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struct work_struct work;
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struct mlx5_vdpa_dev *mvdev;
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};
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enum {
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MLX5_VDPA_DATAVQ_GROUP,
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MLX5_VDPA_CVQ_GROUP,
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MLX5_VDPA_DATAVQ_DESC_GROUP,
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MLX5_VDPA_NUMVQ_GROUPS
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};
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enum {
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MLX5_VDPA_NUM_AS = 2
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};
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struct mlx5_vdpa_dev {
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struct vdpa_device vdev;
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struct mlx5_core_dev *mdev;
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struct mlx5_vdpa_resources res;
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u64 mlx_features;
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u64 actual_features;
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u8 status;
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u32 max_vqs;
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u16 max_idx;
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u32 generation;
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struct mlx5_vdpa_mr *mr[MLX5_VDPA_NUM_AS];
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/* serialize mr access */
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struct mutex mr_mtx;
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struct mlx5_control_vq cvq;
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struct workqueue_struct *wq;
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unsigned int group2asid[MLX5_VDPA_NUMVQ_GROUPS];
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bool suspended;
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};
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int mlx5_vdpa_create_tis(struct mlx5_vdpa_dev *mvdev, void *in, u32 *tisn);
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void mlx5_vdpa_destroy_tis(struct mlx5_vdpa_dev *mvdev, u32 tisn);
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int mlx5_vdpa_create_rqt(struct mlx5_vdpa_dev *mvdev, void *in, int inlen, u32 *rqtn);
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int mlx5_vdpa_modify_rqt(struct mlx5_vdpa_dev *mvdev, void *in, int inlen, u32 rqtn);
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void mlx5_vdpa_destroy_rqt(struct mlx5_vdpa_dev *mvdev, u32 rqtn);
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int mlx5_vdpa_create_tir(struct mlx5_vdpa_dev *mvdev, void *in, u32 *tirn);
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void mlx5_vdpa_destroy_tir(struct mlx5_vdpa_dev *mvdev, u32 tirn);
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int mlx5_vdpa_alloc_transport_domain(struct mlx5_vdpa_dev *mvdev, u32 *tdn);
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void mlx5_vdpa_dealloc_transport_domain(struct mlx5_vdpa_dev *mvdev, u32 tdn);
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int mlx5_vdpa_alloc_resources(struct mlx5_vdpa_dev *mvdev);
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void mlx5_vdpa_free_resources(struct mlx5_vdpa_dev *mvdev);
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int mlx5_vdpa_create_mkey(struct mlx5_vdpa_dev *mvdev, u32 *mkey, u32 *in,
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int inlen);
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int mlx5_vdpa_destroy_mkey(struct mlx5_vdpa_dev *mvdev, u32 mkey);
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struct mlx5_vdpa_mr *mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev,
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struct vhost_iotlb *iotlb);
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void mlx5_vdpa_destroy_mr_resources(struct mlx5_vdpa_dev *mvdev);
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void mlx5_vdpa_destroy_mr(struct mlx5_vdpa_dev *mvdev,
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struct mlx5_vdpa_mr *mr);
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void mlx5_vdpa_update_mr(struct mlx5_vdpa_dev *mvdev,
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struct mlx5_vdpa_mr *mr,
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unsigned int asid);
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int mlx5_vdpa_update_cvq_iotlb(struct mlx5_vdpa_dev *mvdev,
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struct vhost_iotlb *iotlb,
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unsigned int asid);
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int mlx5_vdpa_create_dma_mr(struct mlx5_vdpa_dev *mvdev);
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int mlx5_vdpa_reset_mr(struct mlx5_vdpa_dev *mvdev, unsigned int asid);
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#define mlx5_vdpa_warn(__dev, format, ...) \
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dev_warn((__dev)->mdev->device, "%s:%d:(pid %d) warning: " format, __func__, __LINE__, \
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current->pid, ##__VA_ARGS__)
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#define mlx5_vdpa_info(__dev, format, ...) \
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dev_info((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \
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current->pid, ##__VA_ARGS__)
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#define mlx5_vdpa_dbg(__dev, format, ...) \
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dev_debug((__dev)->mdev->device, "%s:%d:(pid %d): " format, __func__, __LINE__, \
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current->pid, ##__VA_ARGS__)
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#endif /* __MLX5_VDPA_H__ */
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