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_ecpf_esw_admins_host_pf(const struct mlx5_core_dev * dev)11 static bool mlx5_ecpf_esw_admins_host_pf(const struct mlx5_core_dev *dev)
12 {
13 /* In separate host mode, PF enables itself.
14 * When ECPF is eswitch manager, eswitch enables host PF after
15 * eswitch is setup.
16 */
17 return mlx5_core_is_ecpf_esw_manager(dev);
18 }
19
mlx5_cmd_host_pf_enable_hca(struct mlx5_core_dev * dev)20 int mlx5_cmd_host_pf_enable_hca(struct mlx5_core_dev *dev)
21 {
22 u32 out[MLX5_ST_SZ_DW(enable_hca_out)] = {};
23 u32 in[MLX5_ST_SZ_DW(enable_hca_in)] = {};
24
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));
29 }
30
mlx5_cmd_host_pf_disable_hca(struct mlx5_core_dev * dev)31 int mlx5_cmd_host_pf_disable_hca(struct mlx5_core_dev *dev)
32 {
33 u32 out[MLX5_ST_SZ_DW(disable_hca_out)] = {};
34 u32 in[MLX5_ST_SZ_DW(disable_hca_in)] = {};
35
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));
40 }
41
mlx5_host_pf_init(struct mlx5_core_dev * dev)42 static int mlx5_host_pf_init(struct mlx5_core_dev *dev)
43 {
44 int err;
45
46 if (mlx5_ecpf_esw_admins_host_pf(dev))
47 return 0;
48
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.
51 */
52 err = mlx5_cmd_host_pf_enable_hca(dev);
53 if (err)
54 mlx5_core_err(dev, "Failed to enable external host PF HCA err(%d)\n", err);
55
56 return err;
57 }
58
mlx5_host_pf_cleanup(struct mlx5_core_dev * dev)59 static void mlx5_host_pf_cleanup(struct mlx5_core_dev *dev)
60 {
61 int err;
62
63 if (mlx5_ecpf_esw_admins_host_pf(dev))
64 return;
65
66 err = mlx5_cmd_host_pf_disable_hca(dev);
67 if (err) {
68 mlx5_core_err(dev, "Failed to disable external host PF HCA err(%d)\n", err);
69 return;
70 }
71 }
72
mlx5_ec_init(struct mlx5_core_dev * dev)73 int mlx5_ec_init(struct mlx5_core_dev *dev)
74 {
75 if (!mlx5_core_is_ecpf(dev))
76 return 0;
77
78 return mlx5_host_pf_init(dev);
79 }
80
mlx5_ec_cleanup(struct mlx5_core_dev * dev)81 void mlx5_ec_cleanup(struct mlx5_core_dev *dev)
82 {
83 int err;
84
85 if (!mlx5_core_is_ecpf(dev))
86 return;
87
88 mlx5_host_pf_cleanup(dev);
89
90 err = mlx5_wait_for_pages(dev, &dev->priv.page_counters[MLX5_HOST_PF]);
91 if (err)
92 mlx5_core_warn(dev, "Timeout reclaiming external host PF pages err(%d)\n", err);
93
94 err = mlx5_wait_for_pages(dev, &dev->priv.page_counters[MLX5_VF]);
95 if (err)
96 mlx5_core_warn(dev, "Timeout reclaiming external host VFs pages err(%d)\n", err);
97 }
98