1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /* Copyright (c) 2019 Mellanox Technologies. */
6 bool mlx5_read_embedded_cpu(struct mlx5_core_dev *dev)
8 return (ioread32be(&dev->iseg->initializing) >> MLX5_ECPU_BIT_NUM) & 1;
11 static bool mlx5_ecpf_esw_admins_host_pf(const struct mlx5_core_dev *dev)
13 /* In separate host mode, PF enables itself.
14 * When ECPF is eswitch manager, eswitch enables host PF after
17 return mlx5_core_is_ecpf_esw_manager(dev);
20 int mlx5_cmd_host_pf_enable_hca(struct mlx5_core_dev *dev)
22 u32 out[MLX5_ST_SZ_DW(enable_hca_out)] = {};
23 u32 in[MLX5_ST_SZ_DW(enable_hca_in)] = {};
25 MLX5_SET(enable_hca_in, in, opcode, MLX5_CMD_OP_ENABLE_HCA);
26 MLX5_SET(enable_hca_in, in, function_id, 0);
27 MLX5_SET(enable_hca_in, in, embedded_cpu_function, 0);
28 return mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
31 int mlx5_cmd_host_pf_disable_hca(struct mlx5_core_dev *dev)
33 u32 out[MLX5_ST_SZ_DW(disable_hca_out)] = {};
34 u32 in[MLX5_ST_SZ_DW(disable_hca_in)] = {};
36 MLX5_SET(disable_hca_in, in, opcode, MLX5_CMD_OP_DISABLE_HCA);
37 MLX5_SET(disable_hca_in, in, function_id, 0);
38 MLX5_SET(disable_hca_in, in, embedded_cpu_function, 0);
39 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
42 static int mlx5_host_pf_init(struct mlx5_core_dev *dev)
46 if (mlx5_ecpf_esw_admins_host_pf(dev))
49 /* ECPF shall enable HCA for host PF in the same way a PF
50 * does this for its VFs when ECPF is not a eswitch manager.
52 err = mlx5_cmd_host_pf_enable_hca(dev);
54 mlx5_core_err(dev, "Failed to enable external host PF HCA err(%d)\n", err);
59 static void mlx5_host_pf_cleanup(struct mlx5_core_dev *dev)
63 if (mlx5_ecpf_esw_admins_host_pf(dev))
66 err = mlx5_cmd_host_pf_disable_hca(dev);
68 mlx5_core_err(dev, "Failed to disable external host PF HCA err(%d)\n", err);
73 int mlx5_ec_init(struct mlx5_core_dev *dev)
75 if (!mlx5_core_is_ecpf(dev))
78 return mlx5_host_pf_init(dev);
81 void mlx5_ec_cleanup(struct mlx5_core_dev *dev)
85 if (!mlx5_core_is_ecpf(dev))
88 mlx5_host_pf_cleanup(dev);
90 err = mlx5_wait_for_pages(dev, &dev->priv.host_pf_pages);
92 mlx5_core_warn(dev, "Timeout reclaiming external host PF pages err(%d)\n", err);