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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/net/ethernet/mellanox/mlx5/core/ecpf.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/ecpf.c')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/ecpf.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/ecpf.c b/drivers/net/ethernet/mellanox/mlx5/core/ecpf.c new file mode 100644 index 0000000000..d000236ddb --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/ecpf.c @@ -0,0 +1,97 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ +/* Copyright (c) 2019 Mellanox Technologies. */ + +#include "ecpf.h" + +bool mlx5_read_embedded_cpu(struct mlx5_core_dev *dev) +{ + return (ioread32be(&dev->iseg->initializing) >> MLX5_ECPU_BIT_NUM) & 1; +} + +static bool mlx5_ecpf_esw_admins_host_pf(const struct mlx5_core_dev *dev) +{ + /* In separate host mode, PF enables itself. + * When ECPF is eswitch manager, eswitch enables host PF after + * eswitch is setup. + */ + return mlx5_core_is_ecpf_esw_manager(dev); +} + +int mlx5_cmd_host_pf_enable_hca(struct mlx5_core_dev *dev) +{ + u32 out[MLX5_ST_SZ_DW(enable_hca_out)] = {}; + u32 in[MLX5_ST_SZ_DW(enable_hca_in)] = {}; + + MLX5_SET(enable_hca_in, in, opcode, MLX5_CMD_OP_ENABLE_HCA); + MLX5_SET(enable_hca_in, in, function_id, 0); + MLX5_SET(enable_hca_in, in, embedded_cpu_function, 0); + return mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); +} + +int mlx5_cmd_host_pf_disable_hca(struct mlx5_core_dev *dev) +{ + u32 out[MLX5_ST_SZ_DW(disable_hca_out)] = {}; + u32 in[MLX5_ST_SZ_DW(disable_hca_in)] = {}; + + MLX5_SET(disable_hca_in, in, opcode, MLX5_CMD_OP_DISABLE_HCA); + MLX5_SET(disable_hca_in, in, function_id, 0); + MLX5_SET(disable_hca_in, in, embedded_cpu_function, 0); + return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); +} + +static int mlx5_host_pf_init(struct mlx5_core_dev *dev) +{ + int err; + + if (mlx5_ecpf_esw_admins_host_pf(dev)) + return 0; + + /* ECPF shall enable HCA for host PF in the same way a PF + * does this for its VFs when ECPF is not a eswitch manager. + */ + err = mlx5_cmd_host_pf_enable_hca(dev); + if (err) + mlx5_core_err(dev, "Failed to enable external host PF HCA err(%d)\n", err); + + return err; +} + +static void mlx5_host_pf_cleanup(struct mlx5_core_dev *dev) +{ + int err; + + if (mlx5_ecpf_esw_admins_host_pf(dev)) + return; + + err = mlx5_cmd_host_pf_disable_hca(dev); + if (err) { + mlx5_core_err(dev, "Failed to disable external host PF HCA err(%d)\n", err); + return; + } +} + +int mlx5_ec_init(struct mlx5_core_dev *dev) +{ + if (!mlx5_core_is_ecpf(dev)) + return 0; + + return mlx5_host_pf_init(dev); +} + +void mlx5_ec_cleanup(struct mlx5_core_dev *dev) +{ + int err; + + if (!mlx5_core_is_ecpf(dev)) + return; + + mlx5_host_pf_cleanup(dev); + + err = mlx5_wait_for_pages(dev, &dev->priv.page_counters[MLX5_HOST_PF]); + if (err) + mlx5_core_warn(dev, "Timeout reclaiming external host PF pages err(%d)\n", err); + + err = mlx5_wait_for_pages(dev, &dev->priv.page_counters[MLX5_VF]); + if (err) + mlx5_core_warn(dev, "Timeout reclaiming external host VFs pages err(%d)\n", err); +} |