1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /* Copyright (c) 2019 Mellanox Technologies. */
3
4 #include "ecpf.h"
5
mlx5_read_embedded_cpu(struct mlx5_core_dev * dev)6 bool mlx5_read_embedded_cpu(struct mlx5_core_dev *dev)
7 {
8 return (ioread32be(&dev->iseg->initializing) >> MLX5_ECPU_BIT_NUM) & 1;
9 }
10
mlx5_peer_pf_init(struct mlx5_core_dev * dev)11 static int mlx5_peer_pf_init(struct mlx5_core_dev *dev)
12 {
13 u32 in[MLX5_ST_SZ_DW(enable_hca_in)] = {};
14 int err;
15
16 MLX5_SET(enable_hca_in, in, opcode, MLX5_CMD_OP_ENABLE_HCA);
17 err = mlx5_cmd_exec_in(dev, enable_hca, in);
18 if (err)
19 mlx5_core_err(dev, "Failed to enable peer PF HCA err(%d)\n",
20 err);
21
22 return err;
23 }
24
mlx5_peer_pf_cleanup(struct mlx5_core_dev * dev)25 static void mlx5_peer_pf_cleanup(struct mlx5_core_dev *dev)
26 {
27 u32 in[MLX5_ST_SZ_DW(disable_hca_in)] = {};
28 int err;
29
30 MLX5_SET(disable_hca_in, in, opcode, MLX5_CMD_OP_DISABLE_HCA);
31 err = mlx5_cmd_exec_in(dev, disable_hca, in);
32 if (err) {
33 mlx5_core_err(dev, "Failed to disable peer PF HCA err(%d)\n",
34 err);
35 return;
36 }
37
38 err = mlx5_wait_for_pages(dev, &dev->priv.peer_pf_pages);
39 if (err)
40 mlx5_core_warn(dev, "Timeout reclaiming peer PF pages err(%d)\n",
41 err);
42 }
43
mlx5_ec_init(struct mlx5_core_dev * dev)44 int mlx5_ec_init(struct mlx5_core_dev *dev)
45 {
46 if (!mlx5_core_is_ecpf(dev))
47 return 0;
48
49 /* ECPF shall enable HCA for peer PF in the same way a PF
50 * does this for its VFs.
51 */
52 return mlx5_peer_pf_init(dev);
53 }
54
mlx5_ec_cleanup(struct mlx5_core_dev * dev)55 void mlx5_ec_cleanup(struct mlx5_core_dev *dev)
56 {
57 if (!mlx5_core_is_ecpf(dev))
58 return;
59
60 mlx5_peer_pf_cleanup(dev);
61 }
62
