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1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */2/* Copyright (c) 2019 Mellanox Technologies. */3 4#include "ecpf.h"5 6bool mlx5_read_embedded_cpu(struct mlx5_core_dev *dev)7{8 return (ioread32be(&dev->iseg->initializing) >> MLX5_ECPU_BIT_NUM) & 1;9}10 11static 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 after15 * eswitch is setup.16 */17 return mlx5_core_is_ecpf_esw_manager(dev);18}19 20int 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 31int 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 42static 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 PF50 * 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 59static 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 73int 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 81void 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