mlxsw: spectrum: Register KVD resources with devlink
Register the KVD resources with devlink. The KVD is a memory resource which is subdivided into three partitions which are the linear, hash single and hash double. Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
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54a2e8d456
commit
ef3116e540
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@ -1012,6 +1012,12 @@ int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
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if (err)
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goto err_bus_init;
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if (mlxsw_driver->resources_register) {
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err = mlxsw_driver->resources_register(mlxsw_core);
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if (err)
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goto err_register_resources;
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}
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err = mlxsw_ports_init(mlxsw_core);
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if (err)
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goto err_ports_init;
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@ -1067,6 +1073,8 @@ err_alloc_lag_mapping:
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err_ports_init:
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mlxsw_bus->fini(bus_priv);
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err_bus_init:
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devlink_resources_unregister(devlink, NULL);
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err_register_resources:
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devlink_free(devlink);
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err_devlink_alloc:
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mlxsw_core_driver_put(device_kind);
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@ -1086,6 +1094,7 @@ void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core)
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mlxsw_emad_fini(mlxsw_core);
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kfree(mlxsw_core->lag.mapping);
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mlxsw_ports_fini(mlxsw_core);
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devlink_resources_unregister(devlink, NULL);
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mlxsw_core->bus->fini(mlxsw_core->bus_priv);
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devlink_free(devlink);
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mlxsw_core_driver_put(device_kind);
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@ -308,6 +308,7 @@ struct mlxsw_driver {
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u32 *p_cur, u32 *p_max);
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void (*txhdr_construct)(struct sk_buff *skb,
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const struct mlxsw_tx_info *tx_info);
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int (*resources_register)(struct mlxsw_core *mlxsw_core);
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u8 txhdr_len;
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const struct mlxsw_config_profile *profile;
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};
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@ -3991,6 +3991,188 @@ static const struct mlxsw_config_profile mlxsw_sp_config_profile = {
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.resource_query_enable = 1,
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};
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static bool
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mlxsw_sp_resource_kvd_granularity_validate(struct netlink_ext_ack *extack,
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u64 size)
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{
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const struct mlxsw_config_profile *profile;
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profile = &mlxsw_sp_config_profile;
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if (size % profile->kvd_hash_granularity) {
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NL_SET_ERR_MSG_MOD(extack, "resource set with wrong granularity");
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return false;
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}
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return true;
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}
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static int
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mlxsw_sp_resource_kvd_size_validate(struct devlink *devlink, u64 size,
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struct netlink_ext_ack *extack)
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{
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NL_SET_ERR_MSG_MOD(extack, "kvd size cannot be changed");
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return -EINVAL;
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}
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static int
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mlxsw_sp_resource_kvd_linear_size_validate(struct devlink *devlink, u64 size,
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struct netlink_ext_ack *extack)
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{
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if (!mlxsw_sp_resource_kvd_granularity_validate(extack, size))
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return -EINVAL;
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return 0;
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}
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static int
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mlxsw_sp_resource_kvd_hash_single_size_validate(struct devlink *devlink, u64 size,
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struct netlink_ext_ack *extack)
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{
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struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
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if (!mlxsw_sp_resource_kvd_granularity_validate(extack, size))
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return -EINVAL;
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if (size < MLXSW_CORE_RES_GET(mlxsw_core, KVD_SINGLE_MIN_SIZE)) {
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NL_SET_ERR_MSG_MOD(extack, "hash single size is smaller than minimum");
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return -EINVAL;
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}
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return 0;
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}
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static int
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mlxsw_sp_resource_kvd_hash_double_size_validate(struct devlink *devlink, u64 size,
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struct netlink_ext_ack *extack)
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{
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struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
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if (!mlxsw_sp_resource_kvd_granularity_validate(extack, size))
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return -EINVAL;
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if (size < MLXSW_CORE_RES_GET(mlxsw_core, KVD_DOUBLE_MIN_SIZE)) {
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NL_SET_ERR_MSG_MOD(extack, "hash double size is smaller than minimum");
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return -EINVAL;
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}
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return 0;
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}
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static struct devlink_resource_ops mlxsw_sp_resource_kvd_ops = {
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.size_validate = mlxsw_sp_resource_kvd_size_validate,
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};
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static struct devlink_resource_ops mlxsw_sp_resource_kvd_linear_ops = {
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.size_validate = mlxsw_sp_resource_kvd_linear_size_validate,
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};
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static struct devlink_resource_ops mlxsw_sp_resource_kvd_hash_single_ops = {
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.size_validate = mlxsw_sp_resource_kvd_hash_single_size_validate,
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};
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static struct devlink_resource_ops mlxsw_sp_resource_kvd_hash_double_ops = {
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.size_validate = mlxsw_sp_resource_kvd_hash_double_size_validate,
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};
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static struct devlink_resource_size_params mlxsw_sp_kvd_size_params;
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static struct devlink_resource_size_params mlxsw_sp_linear_size_params;
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static struct devlink_resource_size_params mlxsw_sp_hash_single_size_params;
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static struct devlink_resource_size_params mlxsw_sp_hash_double_size_params;
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static void
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mlxsw_sp_resource_size_params_prepare(struct mlxsw_core *mlxsw_core)
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{
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u32 single_size_min = MLXSW_CORE_RES_GET(mlxsw_core,
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KVD_SINGLE_MIN_SIZE);
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u32 double_size_min = MLXSW_CORE_RES_GET(mlxsw_core,
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KVD_DOUBLE_MIN_SIZE);
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u32 kvd_size = MLXSW_CORE_RES_GET(mlxsw_core, KVD_SIZE);
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u32 linear_size_min = 0;
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/* KVD top resource */
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mlxsw_sp_kvd_size_params.size_min = kvd_size;
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mlxsw_sp_kvd_size_params.size_max = kvd_size;
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mlxsw_sp_kvd_size_params.size_granularity = MLXSW_SP_KVD_GRANULARITY;
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mlxsw_sp_kvd_size_params.unit = DEVLINK_RESOURCE_UNIT_ENTRY;
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/* Linear part init */
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mlxsw_sp_linear_size_params.size_min = linear_size_min;
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mlxsw_sp_linear_size_params.size_max = kvd_size - single_size_min -
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double_size_min;
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mlxsw_sp_linear_size_params.size_granularity = MLXSW_SP_KVD_GRANULARITY;
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mlxsw_sp_linear_size_params.unit = DEVLINK_RESOURCE_UNIT_ENTRY;
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/* Hash double part init */
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mlxsw_sp_hash_double_size_params.size_min = double_size_min;
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mlxsw_sp_hash_double_size_params.size_max = kvd_size - single_size_min -
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linear_size_min;
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mlxsw_sp_hash_double_size_params.size_granularity = MLXSW_SP_KVD_GRANULARITY;
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mlxsw_sp_hash_double_size_params.unit = DEVLINK_RESOURCE_UNIT_ENTRY;
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/* Hash single part init */
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mlxsw_sp_hash_single_size_params.size_min = single_size_min;
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mlxsw_sp_hash_single_size_params.size_max = kvd_size - double_size_min -
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linear_size_min;
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mlxsw_sp_hash_single_size_params.size_granularity = MLXSW_SP_KVD_GRANULARITY;
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mlxsw_sp_hash_single_size_params.unit = DEVLINK_RESOURCE_UNIT_ENTRY;
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}
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static int mlxsw_sp_resources_register(struct mlxsw_core *mlxsw_core)
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{
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struct devlink *devlink = priv_to_devlink(mlxsw_core);
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u32 kvd_size, single_size, double_size, linear_size;
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const struct mlxsw_config_profile *profile;
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int err;
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profile = &mlxsw_sp_config_profile;
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if (!MLXSW_CORE_RES_VALID(mlxsw_core, KVD_SIZE))
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return -EIO;
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mlxsw_sp_resource_size_params_prepare(mlxsw_core);
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kvd_size = MLXSW_CORE_RES_GET(mlxsw_core, KVD_SIZE);
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err = devlink_resource_register(devlink, MLXSW_SP_RESOURCE_NAME_KVD,
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true, kvd_size,
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MLXSW_SP_RESOURCE_KVD,
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DEVLINK_RESOURCE_ID_PARENT_TOP,
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&mlxsw_sp_kvd_size_params,
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&mlxsw_sp_resource_kvd_ops);
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if (err)
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return err;
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linear_size = profile->kvd_linear_size;
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err = devlink_resource_register(devlink, MLXSW_SP_RESOURCE_NAME_KVD_LINEAR,
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false, linear_size,
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MLXSW_SP_RESOURCE_KVD_LINEAR,
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MLXSW_SP_RESOURCE_KVD,
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&mlxsw_sp_linear_size_params,
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&mlxsw_sp_resource_kvd_linear_ops);
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if (err)
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return err;
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double_size = kvd_size - linear_size;
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double_size *= profile->kvd_hash_double_parts;
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double_size /= profile->kvd_hash_double_parts +
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profile->kvd_hash_single_parts;
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double_size = rounddown(double_size, profile->kvd_hash_granularity);
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err = devlink_resource_register(devlink, MLXSW_SP_RESOURCE_NAME_KVD_HASH_DOUBLE,
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false, double_size,
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MLXSW_SP_RESOURCE_KVD_HASH_DOUBLE,
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MLXSW_SP_RESOURCE_KVD,
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&mlxsw_sp_hash_double_size_params,
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&mlxsw_sp_resource_kvd_hash_double_ops);
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if (err)
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return err;
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single_size = kvd_size - double_size - linear_size;
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err = devlink_resource_register(devlink, MLXSW_SP_RESOURCE_NAME_KVD_HASH_SINGLE,
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false, single_size,
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MLXSW_SP_RESOURCE_KVD_HASH_SINGLE,
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MLXSW_SP_RESOURCE_KVD,
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&mlxsw_sp_hash_single_size_params,
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&mlxsw_sp_resource_kvd_hash_single_ops);
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if (err)
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return err;
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return 0;
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}
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static struct mlxsw_driver mlxsw_sp_driver = {
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.kind = mlxsw_sp_driver_name,
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.priv_size = sizeof(struct mlxsw_sp),
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@ -4010,6 +4192,7 @@ static struct mlxsw_driver mlxsw_sp_driver = {
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.sb_occ_port_pool_get = mlxsw_sp_sb_occ_port_pool_get,
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.sb_occ_tc_port_bind_get = mlxsw_sp_sb_occ_tc_port_bind_get,
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.txhdr_construct = mlxsw_sp_txhdr_construct,
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.resources_register = mlxsw_sp_resources_register,
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.txhdr_len = MLXSW_TXHDR_LEN,
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.profile = &mlxsw_sp_config_profile,
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};
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@ -66,6 +66,18 @@
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#define MLXSW_SP_KVD_LINEAR_SIZE 98304 /* entries */
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#define MLXSW_SP_KVD_GRANULARITY 128
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#define MLXSW_SP_RESOURCE_NAME_KVD "kvd"
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#define MLXSW_SP_RESOURCE_NAME_KVD_LINEAR "linear"
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#define MLXSW_SP_RESOURCE_NAME_KVD_HASH_SINGLE "hash_single"
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#define MLXSW_SP_RESOURCE_NAME_KVD_HASH_DOUBLE "hash_double"
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enum mlxsw_sp_resource_id {
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MLXSW_SP_RESOURCE_KVD,
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MLXSW_SP_RESOURCE_KVD_LINEAR,
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MLXSW_SP_RESOURCE_KVD_HASH_SINGLE,
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MLXSW_SP_RESOURCE_KVD_HASH_DOUBLE,
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};
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struct mlxsw_sp_port;
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struct mlxsw_sp_rif;
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