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IB/mlx5: Register DEVX with mlx5_core to get async events 

Register DEVX with with mlx5_core to get async events.  This will enable
to dispatch the applicable events to its consumers in down stream patches.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Yishai Hadas 2019-06-30 19:23:30 +03:00 committed by Jason Gunthorpe
parent 2afc5e1b9c
commit e337dd53ce
3 changed files with 48 additions and 2 deletions
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30
drivers/infiniband/hw/mlx5/devx.c
View File

@ -1663,6 +1663,36 @@ static int devx_umem_cleanup(struct ib_uobject *uobject,
return 0;
}
static int devx_event_notifier(struct notifier_block *nb,
unsigned long event_type, void *data)
{
return NOTIFY_DONE;
}
void mlx5_ib_devx_init_event_table(struct mlx5_ib_dev *dev)
{
struct mlx5_devx_event_table *table = &dev->devx_event_table;
xa_init(&table->event_xa);
mutex_init(&table->event_xa_lock);
MLX5_NB_INIT(&table->devx_nb, devx_event_notifier, NOTIFY_ANY);
mlx5_eq_notifier_register(dev->mdev, &table->devx_nb);
}
void mlx5_ib_devx_cleanup_event_table(struct mlx5_ib_dev *dev)
{
struct mlx5_devx_event_table *table = &dev->devx_event_table;
void *entry;
unsigned long id;
mlx5_eq_notifier_unregister(dev->mdev, &table->devx_nb);
xa_for_each(&table->event_xa, id, entry)
kfree(entry);
xa_destroy(&table->event_xa);
}
static ssize_t devx_async_cmd_event_read(struct file *filp, char __user *buf,
size_t count, loff_t *pos)
{

8
drivers/infiniband/hw/mlx5/main.c
View File

@ -6630,15 +6630,19 @@ static int mlx5_ib_stage_devx_init(struct mlx5_ib_dev *dev)
int uid;
uid = mlx5_ib_devx_create(dev, false);
if (uid > 0)
if (uid > 0) {
dev->devx_whitelist_uid = uid;
mlx5_ib_devx_init_event_table(dev);
}
return 0;
}
static void mlx5_ib_stage_devx_cleanup(struct mlx5_ib_dev *dev)
{
if (dev->devx_whitelist_uid)
if (dev->devx_whitelist_uid) {
mlx5_ib_devx_cleanup_event_table(dev);
mlx5_ib_devx_destroy(dev, dev->devx_whitelist_uid);
}
}
void __mlx5_ib_remove(struct mlx5_ib_dev *dev,

12
drivers/infiniband/hw/mlx5/mlx5_ib.h
View File

@ -936,6 +936,13 @@ struct mlx5_ib_pf_eq {
mempool_t *pool;
};
struct mlx5_devx_event_table {
struct mlx5_nb devx_nb;
/* serialize updating the event_xa */
struct mutex event_xa_lock;
struct xarray event_xa;
};
struct mlx5_ib_dev {
struct ib_device ib_dev;
struct mlx5_core_dev *mdev;
@ -985,6 +992,7 @@ struct mlx5_ib_dev {
u16 devx_whitelist_uid;
struct mlx5_srq_table srq_table;
struct mlx5_async_ctx async_ctx;
struct mlx5_devx_event_table devx_event_table;
};
static inline struct mlx5_ib_cq *to_mibcq(struct mlx5_core_cq *mcq)
@ -1324,6 +1332,8 @@ void mlx5_ib_put_native_port_mdev(struct mlx5_ib_dev *dev,
#if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)
int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, bool is_user);
void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid);
void mlx5_ib_devx_init_event_table(struct mlx5_ib_dev *dev);
void mlx5_ib_devx_cleanup_event_table(struct mlx5_ib_dev *dev);
const struct uverbs_object_tree_def *mlx5_ib_get_devx_tree(void);
extern const struct uapi_definition mlx5_ib_devx_defs[];
extern const struct uapi_definition mlx5_ib_flow_defs[];
@ -1341,6 +1351,8 @@ static inline int
mlx5_ib_devx_create(struct mlx5_ib_dev *dev,
bool is_user) { return -EOPNOTSUPP; }
static inline void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid) {}
static inline void mlx5_ib_devx_init_event_table(struct mlx5_ib_dev *dev) {}
static inline void mlx5_ib_devx_cleanup_event_table(struct mlx5_ib_dev *dev) {}
static inline bool mlx5_ib_devx_is_flow_dest(void *obj, int *dest_id,
int *dest_type)
{