1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ 2 /* Copyright (c) 2019 Mellanox Technologies. */ 3 4 #include "ecpf.h" 5 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 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 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 44 int mlx5_ec_init(struct mlx5_core_dev *dev) 45 { 46 int err = 0; 47 48 if (!mlx5_core_is_ecpf(dev)) 49 return 0; 50 51 /* ECPF shall enable HCA for peer PF in the same way a PF 52 * does this for its VFs. 53 */ 54 err = mlx5_peer_pf_init(dev); 55 if (err) 56 return err; 57 58 return 0; 59 } 60 61 void mlx5_ec_cleanup(struct mlx5_core_dev *dev) 62 { 63 if (!mlx5_core_is_ecpf(dev)) 64 return; 65 66 mlx5_peer_pf_cleanup(dev); 67 } 68