98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/* Copyright (c) 2019 Mellanox Technologies. */
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#include "ecpf.h"
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bool mlx5_read_embedded_cpu(struct mlx5_core_dev *dev)
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{
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return (ioread32be(&dev->iseg->initializing) >> MLX5_ECPU_BIT_NUM) & 1;
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}
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static bool mlx5_ecpf_esw_admins_host_pf(const struct mlx5_core_dev *dev)
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{
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/* In separate host mode, PF enables itself.
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* When ECPF is eswitch manager, eswitch enables host PF after
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* eswitch is setup.
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*/
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return mlx5_core_is_ecpf_esw_manager(dev);
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}
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int mlx5_cmd_host_pf_enable_hca(struct mlx5_core_dev *dev)
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{
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u32 out[MLX5_ST_SZ_DW(enable_hca_out)] = {};
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u32 in[MLX5_ST_SZ_DW(enable_hca_in)] = {};
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MLX5_SET(enable_hca_in, in, opcode, MLX5_CMD_OP_ENABLE_HCA);
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MLX5_SET(enable_hca_in, in, function_id, 0);
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MLX5_SET(enable_hca_in, in, embedded_cpu_function, 0);
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return mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
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}
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int mlx5_cmd_host_pf_disable_hca(struct mlx5_core_dev *dev)
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{
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u32 out[MLX5_ST_SZ_DW(disable_hca_out)] = {};
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u32 in[MLX5_ST_SZ_DW(disable_hca_in)] = {};
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MLX5_SET(disable_hca_in, in, opcode, MLX5_CMD_OP_DISABLE_HCA);
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MLX5_SET(disable_hca_in, in, function_id, 0);
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MLX5_SET(disable_hca_in, in, embedded_cpu_function, 0);
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return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
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}
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static int mlx5_host_pf_init(struct mlx5_core_dev *dev)
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{
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int err;
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if (mlx5_ecpf_esw_admins_host_pf(dev))
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return 0;
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/* ECPF shall enable HCA for host PF in the same way a PF
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* does this for its VFs when ECPF is not a eswitch manager.
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*/
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err = mlx5_cmd_host_pf_enable_hca(dev);
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if (err)
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mlx5_core_err(dev, "Failed to enable external host PF HCA err(%d)\n", err);
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return err;
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}
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static void mlx5_host_pf_cleanup(struct mlx5_core_dev *dev)
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{
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int err;
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if (mlx5_ecpf_esw_admins_host_pf(dev))
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return;
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err = mlx5_cmd_host_pf_disable_hca(dev);
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if (err) {
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mlx5_core_err(dev, "Failed to disable external host PF HCA err(%d)\n", err);
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return;
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}
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}
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int mlx5_ec_init(struct mlx5_core_dev *dev)
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{
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if (!mlx5_core_is_ecpf(dev))
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return 0;
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return mlx5_host_pf_init(dev);
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}
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void mlx5_ec_cleanup(struct mlx5_core_dev *dev)
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{
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int err;
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if (!mlx5_core_is_ecpf(dev))
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return;
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mlx5_host_pf_cleanup(dev);
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err = mlx5_wait_for_pages(dev, &dev->priv.page_counters[MLX5_HOST_PF]);
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if (err)
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mlx5_core_warn(dev, "Timeout reclaiming external host PF pages err(%d)\n", err);
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err = mlx5_wait_for_pages(dev, &dev->priv.page_counters[MLX5_VF]);
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if (err)
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mlx5_core_warn(dev, "Timeout reclaiming external host VFs pages err(%d)\n", err);
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}
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