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RDMA/mlx5: Add support to MODIFY_MEMIC command
Add two functions to allocate and deallocate MEMIC operations by using the MODIFY_MEMIC command. Link: https://lore.kernel.org/r/20210411122924.60230-6-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>
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2 changed files with 38 additions and 0 deletions
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@ -111,6 +111,42 @@ void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr,
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spin_unlock(&dm->lock);
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}
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void mlx5_cmd_dealloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr,
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u8 operation)
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{
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u32 in[MLX5_ST_SZ_DW(modify_memic_in)] = {};
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struct mlx5_core_dev *dev = dm->dev;
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MLX5_SET(modify_memic_in, in, opcode, MLX5_CMD_OP_MODIFY_MEMIC);
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MLX5_SET(modify_memic_in, in, op_mod, MLX5_MODIFY_MEMIC_OP_MOD_DEALLOC);
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MLX5_SET(modify_memic_in, in, memic_operation_type, operation);
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MLX5_SET64(modify_memic_in, in, memic_start_addr, addr - dev->bar_addr);
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mlx5_cmd_exec_in(dev, modify_memic, in);
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}
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static int mlx5_cmd_alloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr,
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u8 operation, phys_addr_t *op_addr)
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{
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u32 out[MLX5_ST_SZ_DW(modify_memic_out)] = {};
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u32 in[MLX5_ST_SZ_DW(modify_memic_in)] = {};
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struct mlx5_core_dev *dev = dm->dev;
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int err;
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MLX5_SET(modify_memic_in, in, opcode, MLX5_CMD_OP_MODIFY_MEMIC);
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MLX5_SET(modify_memic_in, in, op_mod, MLX5_MODIFY_MEMIC_OP_MOD_ALLOC);
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MLX5_SET(modify_memic_in, in, memic_operation_type, operation);
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MLX5_SET64(modify_memic_in, in, memic_start_addr, addr - dev->bar_addr);
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err = mlx5_cmd_exec_inout(dev, modify_memic, in, out);
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if (err)
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return err;
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*op_addr = dev->bar_addr +
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MLX5_GET64(modify_memic_out, out, memic_operation_addr);
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return 0;
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}
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static int add_dm_mmap_entry(struct ib_ucontext *context,
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struct mlx5_ib_dm_memic *mdm, u64 address)
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{
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@ -49,5 +49,7 @@ struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev,
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struct uverbs_attr_bundle *attrs);
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void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr,
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u64 length);
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void mlx5_cmd_dealloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr,
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u8 operation);
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#endif /* _MLX5_IB_DM_H */
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