diff options
| author | Maor Gottlieb <maorg@nvidia.com> | 2021-04-11 15:29:23 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-04-14 01:36:36 +0300 |
| commit | cea85fa5dbc2e0206b58095c0c12ff035b11d129 (patch) | |
| tree | 00c098cae1670379fab2db547b292971407fb358 /drivers/infiniband/hw/mlx5/main.c | |
| parent | 39cc792ff2e8d7814b322547514ef1e3ce5c36a5 (diff) | |
| download | linux-cea85fa5dbc2e0206b58095c0c12ff035b11d129.tar.xz | |
RDMA/mlx5: Add support in MEMIC operations
MEMIC buffer, in addition to regular read and write operations, can
support atomic operations from the host.
Introduce and implement new UAPI to allocate address space for MEMIC
operations such as atomic. This includes:
1. Expose new IOCTL for request mapping of MEMIC operation.
2. Hold the operations address in a list, so same operation to same DM
will be allocated only once.
3. Manage refcount on the mlx5_ib_dm object, so it would be keep valid
until all addresses were unmapped.
Link: https://lore.kernel.org/r/20210411122924.60230-7-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/main.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index c7544c37d0f1..98a96b6c0bf5 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -2088,14 +2088,11 @@ static void mlx5_ib_mmap_free(struct rdma_user_mmap_entry *entry) struct mlx5_user_mmap_entry *mentry = to_mmmap(entry); struct mlx5_ib_dev *dev = to_mdev(entry->ucontext->device); struct mlx5_var_table *var_table = &dev->var_table; - struct mlx5_ib_dm_memic *mdm; switch (mentry->mmap_flag) { case MLX5_IB_MMAP_TYPE_MEMIC: - mdm = container_of(mentry, struct mlx5_ib_dm_memic, mentry); - mlx5_cmd_dealloc_memic(&dev->dm, mdm->base.dev_addr, - mdm->base.size); - kfree(mdm); + case MLX5_IB_MMAP_TYPE_MEMIC_OP: + mlx5_ib_dm_mmap_free(dev, mentry); break; case MLX5_IB_MMAP_TYPE_VAR: mutex_lock(&var_table->bitmap_lock); |