drivers/net/ethernet/mellanox/mlx5/core/devlink.c

   1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2 /* Copyright (c) 2019 Mellanox Technologies */
   3
   4 #include <devlink.h>
   5
   6 #include "mlx5_core.h"
   7 #include "fs_core.h"
   8 #include "eswitch.h"
   9
  10 static int mlx5_devlink_flash_update(struct devlink *devlink,
  11                                      const char *file_name,
  12                                      const char *component,
  13                                      struct netlink_ext_ack *extack)
  14 {
  15         struct mlx5_core_dev *dev = devlink_priv(devlink);
  16         const struct firmware *fw;
  17         int err;
  18
  19         if (component)
  20                 return -EOPNOTSUPP;
  21
  22         err = request_firmware_direct(&fw, file_name, &dev->pdev->dev);
  23         if (err)
  24                 return err;
  25
  26         return mlx5_firmware_flash(dev, fw, extack);
  27 }
  28
  29 static u8 mlx5_fw_ver_major(u32 version)
  30 {
  31         return (version >> 24) & 0xff;
  32 }
  33
  34 static u8 mlx5_fw_ver_minor(u32 version)
  35 {
  36         return (version >> 16) & 0xff;
  37 }
  38
  39 static u16 mlx5_fw_ver_subminor(u32 version)
  40 {
  41         return version & 0xffff;
  42 }
  43
  44 #define DEVLINK_FW_STRING_LEN 32
  45
  46 static int
  47 mlx5_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
  48                       struct netlink_ext_ack *extack)
  49 {
  50         struct mlx5_core_dev *dev = devlink_priv(devlink);
  51         char version_str[DEVLINK_FW_STRING_LEN];
  52         u32 running_fw, stored_fw;
  53         int err;
  54
  55         err = devlink_info_driver_name_put(req, DRIVER_NAME);
  56         if (err)
  57                 return err;
  58
  59         err = devlink_info_version_fixed_put(req, "fw.psid", dev->board_id);
  60         if (err)
  61                 return err;
  62
  63         err = mlx5_fw_version_query(dev, &running_fw, &stored_fw);
  64         if (err)
  65                 return err;
  66
  67         snprintf(version_str, sizeof(version_str), "%d.%d.%04d",
  68                  mlx5_fw_ver_major(running_fw), mlx5_fw_ver_minor(running_fw),
  69                  mlx5_fw_ver_subminor(running_fw));
  70         err = devlink_info_version_running_put(req, "fw.version", version_str);
  71         if (err)
  72                 return err;
  73
  74         /* no pending version, return running (stored) version */
  75         if (stored_fw == 0)
  76                 stored_fw = running_fw;
  77
  78         snprintf(version_str, sizeof(version_str), "%d.%d.%04d",
  79                  mlx5_fw_ver_major(stored_fw), mlx5_fw_ver_minor(stored_fw),
  80                  mlx5_fw_ver_subminor(stored_fw));
  81         err = devlink_info_version_stored_put(req, "fw.version", version_str);
  82         if (err)
  83                 return err;
  84
  85         return 0;
  86 }
  87
  88 static const struct devlink_ops mlx5_devlink_ops = {
  89 #ifdef CONFIG_MLX5_ESWITCH
  90         .eswitch_mode_set = mlx5_devlink_eswitch_mode_set,
  91         .eswitch_mode_get = mlx5_devlink_eswitch_mode_get,
  92         .eswitch_inline_mode_set = mlx5_devlink_eswitch_inline_mode_set,
  93         .eswitch_inline_mode_get = mlx5_devlink_eswitch_inline_mode_get,
  94         .eswitch_encap_mode_set = mlx5_devlink_eswitch_encap_mode_set,
  95         .eswitch_encap_mode_get = mlx5_devlink_eswitch_encap_mode_get,
  96 #endif
  97         .flash_update = mlx5_devlink_flash_update,
  98         .info_get = mlx5_devlink_info_get,
  99 };
 100
 101 struct devlink *mlx5_devlink_alloc(void)
 102 {
 103         return devlink_alloc(&mlx5_devlink_ops, sizeof(struct mlx5_core_dev));
 104 }
 105
 106 void mlx5_devlink_free(struct devlink *devlink)
 107 {
 108         devlink_free(devlink);
 109 }
 110
 111 static int mlx5_devlink_fs_mode_validate(struct devlink *devlink, u32 id,
 112                                          union devlink_param_value val,
 113                                          struct netlink_ext_ack *extack)
 114 {
 115         struct mlx5_core_dev *dev = devlink_priv(devlink);
 116         char *value = val.vstr;
 117         int err = 0;
 118
 119         if (!strcmp(value, "dmfs")) {
 120                 return 0;
 121         } else if (!strcmp(value, "smfs")) {
 122                 u8 eswitch_mode;
 123                 bool smfs_cap;
 124
 125                 eswitch_mode = mlx5_eswitch_mode(dev->priv.eswitch);
 126                 smfs_cap = mlx5_fs_dr_is_supported(dev);
 127
 128                 if (!smfs_cap) {
 129                         err = -EOPNOTSUPP;
 130                         NL_SET_ERR_MSG_MOD(extack,
 131                                            "Software managed steering is not supported by current device");
 132                 }
 133
 134                 else if (eswitch_mode == MLX5_ESWITCH_OFFLOADS) {
 135                         NL_SET_ERR_MSG_MOD(extack,
 136                                            "Software managed steering is not supported when eswitch offloads enabled.");
 137                         err = -EOPNOTSUPP;
 138                 }
 139         } else {
 140                 NL_SET_ERR_MSG_MOD(extack,
 141                                    "Bad parameter: supported values are [\"dmfs\", \"smfs\"]");
 142                 err = -EINVAL;
 143         }
 144
 145         return err;
 146 }
 147
 148 static int mlx5_devlink_fs_mode_set(struct devlink *devlink, u32 id,
 149                                     struct devlink_param_gset_ctx *ctx)
 150 {
 151         struct mlx5_core_dev *dev = devlink_priv(devlink);
 152         enum mlx5_flow_steering_mode mode;
 153
 154         if (!strcmp(ctx->val.vstr, "smfs"))
 155                 mode = MLX5_FLOW_STEERING_MODE_SMFS;
 156         else
 157                 mode = MLX5_FLOW_STEERING_MODE_DMFS;
 158         dev->priv.steering->mode = mode;
 159
 160         return 0;
 161 }
 162
 163 static int mlx5_devlink_fs_mode_get(struct devlink *devlink, u32 id,
 164                                     struct devlink_param_gset_ctx *ctx)
 165 {
 166         struct mlx5_core_dev *dev = devlink_priv(devlink);
 167
 168         if (dev->priv.steering->mode == MLX5_FLOW_STEERING_MODE_SMFS)
 169                 strcpy(ctx->val.vstr, "smfs");
 170         else
 171                 strcpy(ctx->val.vstr, "dmfs");
 172         return 0;
 173 }
 174
 175 enum mlx5_devlink_param_id {
 176         MLX5_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
 177         MLX5_DEVLINK_PARAM_FLOW_STEERING_MODE,
 178 };
 179
 180 static const struct devlink_param mlx5_devlink_params[] = {
 181         DEVLINK_PARAM_DRIVER(MLX5_DEVLINK_PARAM_FLOW_STEERING_MODE,
 182                              "flow_steering_mode", DEVLINK_PARAM_TYPE_STRING,
 183                              BIT(DEVLINK_PARAM_CMODE_RUNTIME),
 184                              mlx5_devlink_fs_mode_get, mlx5_devlink_fs_mode_set,
 185                              mlx5_devlink_fs_mode_validate),
 186 };
 187
 188 static void mlx5_devlink_set_params_init_values(struct devlink *devlink)
 189 {
 190         struct mlx5_core_dev *dev = devlink_priv(devlink);
 191         union devlink_param_value value;
 192
 193         if (dev->priv.steering->mode == MLX5_FLOW_STEERING_MODE_DMFS)
 194                 strcpy(value.vstr, "dmfs");
 195         else
 196                 strcpy(value.vstr, "smfs");
 197         devlink_param_driverinit_value_set(devlink,
 198                                            MLX5_DEVLINK_PARAM_FLOW_STEERING_MODE,
 199                                            value);
 200 }
 201
 202 int mlx5_devlink_register(struct devlink *devlink, struct device *dev)
 203 {
 204         int err;
 205
 206         err = devlink_register(devlink, dev);
 207         if (err)
 208                 return err;
 209
 210         err = devlink_params_register(devlink, mlx5_devlink_params,
 211                                       ARRAY_SIZE(mlx5_devlink_params));
 212         if (err)
 213                 goto params_reg_err;
 214         mlx5_devlink_set_params_init_values(devlink);
 215         devlink_params_publish(devlink);
 216         return 0;
 217
 218 params_reg_err:
 219         devlink_unregister(devlink);
 220         return err;
 221 }
 222
 223 void mlx5_devlink_unregister(struct devlink *devlink)
 224 {
 225         devlink_params_unregister(devlink, mlx5_devlink_params,
 226                                   ARRAY_SIZE(mlx5_devlink_params));
 227         devlink_unregister(devlink);
 228 }