diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/events.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/events.c | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/events.c b/drivers/net/ethernet/mellanox/mlx5/core/events.c new file mode 100644 index 000000000000..d3ab86bd394b --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/events.c @@ -0,0 +1,283 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +// Copyright (c) 2018 Mellanox Technologies + +#include <linux/mlx5/driver.h> +#include "mlx5_core.h" +#include "lib/eq.h" +#include "lib/mlx5.h" + +struct mlx5_events { + struct mlx5_nb nb; + struct mlx5_core_dev *dev; + + /* port module evetns stats */ + struct mlx5_pme_stats pme_stats; +}; + +static const char *eqe_type_str(u8 type) +{ + switch (type) { + case MLX5_EVENT_TYPE_COMP: + return "MLX5_EVENT_TYPE_COMP"; + case MLX5_EVENT_TYPE_PATH_MIG: + return "MLX5_EVENT_TYPE_PATH_MIG"; + case MLX5_EVENT_TYPE_COMM_EST: + return "MLX5_EVENT_TYPE_COMM_EST"; + case MLX5_EVENT_TYPE_SQ_DRAINED: + return "MLX5_EVENT_TYPE_SQ_DRAINED"; + case MLX5_EVENT_TYPE_SRQ_LAST_WQE: + return "MLX5_EVENT_TYPE_SRQ_LAST_WQE"; + case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT: + return "MLX5_EVENT_TYPE_SRQ_RQ_LIMIT"; + case MLX5_EVENT_TYPE_CQ_ERROR: + return "MLX5_EVENT_TYPE_CQ_ERROR"; + case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: + return "MLX5_EVENT_TYPE_WQ_CATAS_ERROR"; + case MLX5_EVENT_TYPE_PATH_MIG_FAILED: + return "MLX5_EVENT_TYPE_PATH_MIG_FAILED"; + case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR: + return "MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR"; + case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR: + return "MLX5_EVENT_TYPE_WQ_ACCESS_ERROR"; + case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR: + return "MLX5_EVENT_TYPE_SRQ_CATAS_ERROR"; + case MLX5_EVENT_TYPE_INTERNAL_ERROR: + return "MLX5_EVENT_TYPE_INTERNAL_ERROR"; + case MLX5_EVENT_TYPE_PORT_CHANGE: + return "MLX5_EVENT_TYPE_PORT_CHANGE"; + case MLX5_EVENT_TYPE_GPIO_EVENT: + return "MLX5_EVENT_TYPE_GPIO_EVENT"; + case MLX5_EVENT_TYPE_PORT_MODULE_EVENT: + return "MLX5_EVENT_TYPE_PORT_MODULE_EVENT"; + case MLX5_EVENT_TYPE_TEMP_WARN_EVENT: + return "MLX5_EVENT_TYPE_TEMP_WARN_EVENT"; + case MLX5_EVENT_TYPE_REMOTE_CONFIG: + return "MLX5_EVENT_TYPE_REMOTE_CONFIG"; + case MLX5_EVENT_TYPE_DB_BF_CONGESTION: + return "MLX5_EVENT_TYPE_DB_BF_CONGESTION"; + case MLX5_EVENT_TYPE_STALL_EVENT: + return "MLX5_EVENT_TYPE_STALL_EVENT"; + case MLX5_EVENT_TYPE_CMD: + return "MLX5_EVENT_TYPE_CMD"; + case MLX5_EVENT_TYPE_PAGE_REQUEST: + return "MLX5_EVENT_TYPE_PAGE_REQUEST"; + case MLX5_EVENT_TYPE_PAGE_FAULT: + return "MLX5_EVENT_TYPE_PAGE_FAULT"; + case MLX5_EVENT_TYPE_PPS_EVENT: + return "MLX5_EVENT_TYPE_PPS_EVENT"; + case MLX5_EVENT_TYPE_NIC_VPORT_CHANGE: + return "MLX5_EVENT_TYPE_NIC_VPORT_CHANGE"; + case MLX5_EVENT_TYPE_FPGA_ERROR: + return "MLX5_EVENT_TYPE_FPGA_ERROR"; + case MLX5_EVENT_TYPE_FPGA_QP_ERROR: + return "MLX5_EVENT_TYPE_FPGA_QP_ERROR"; + case MLX5_EVENT_TYPE_GENERAL_EVENT: + return "MLX5_EVENT_TYPE_GENERAL_EVENT"; + case MLX5_EVENT_TYPE_DEVICE_TRACER: + return "MLX5_EVENT_TYPE_DEVICE_TRACER"; + default: + return "Unrecognized event"; + } +} + +static enum mlx5_dev_event port_subtype2dev(u8 subtype) +{ + switch (subtype) { + case MLX5_PORT_CHANGE_SUBTYPE_DOWN: + return MLX5_DEV_EVENT_PORT_DOWN; + case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE: + return MLX5_DEV_EVENT_PORT_UP; + case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED: + return MLX5_DEV_EVENT_PORT_INITIALIZED; + case MLX5_PORT_CHANGE_SUBTYPE_LID: + return MLX5_DEV_EVENT_LID_CHANGE; + case MLX5_PORT_CHANGE_SUBTYPE_PKEY: + return MLX5_DEV_EVENT_PKEY_CHANGE; + case MLX5_PORT_CHANGE_SUBTYPE_GUID: + return MLX5_DEV_EVENT_GUID_CHANGE; + case MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG: + return MLX5_DEV_EVENT_CLIENT_REREG; + } + return -1; +} + +static void temp_warning_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe) +{ + u64 value_lsb; + u64 value_msb; + + value_lsb = be64_to_cpu(eqe->data.temp_warning.sensor_warning_lsb); + value_msb = be64_to_cpu(eqe->data.temp_warning.sensor_warning_msb); + + mlx5_core_warn(dev, + "High temperature on sensors with bit set %llx %llx", + value_msb, value_lsb); +} + +static const char *mlx5_pme_status[MLX5_MODULE_STATUS_NUM] = { + "Cable plugged", /* MLX5_MODULE_STATUS_PLUGGED = 0x1 */ + "Cable unplugged", /* MLX5_MODULE_STATUS_UNPLUGGED = 0x2 */ + "Cable error", /* MLX5_MODULE_STATUS_ERROR = 0x3 */ +}; + +static const char *mlx5_pme_error[MLX5_MODULE_EVENT_ERROR_NUM] = { + "Power budget exceeded", + "Long Range for non MLNX cable", + "Bus stuck(I2C or data shorted)", + "No EEPROM/retry timeout", + "Enforce part number list", + "Unknown identifier", + "High Temperature", + "Bad or shorted cable/module", + "Unknown status", +}; + +static void port_module_event(struct mlx5_events *events, struct mlx5_eqe *eqe) +{ + enum port_module_event_status_type module_status; + enum port_module_event_error_type error_type; + struct mlx5_eqe_port_module *module_event_eqe; + struct mlx5_core_dev *dev = events->dev; + u8 module_num; + + module_event_eqe = &eqe->data.port_module; + module_num = module_event_eqe->module; + module_status = module_event_eqe->module_status & + PORT_MODULE_EVENT_MODULE_STATUS_MASK; + error_type = module_event_eqe->error_type & + PORT_MODULE_EVENT_ERROR_TYPE_MASK; + + if (module_status < MLX5_MODULE_STATUS_ERROR) { + events->pme_stats.status_counters[module_status - 1]++; + } else if (module_status == MLX5_MODULE_STATUS_ERROR) { + if (error_type >= MLX5_MODULE_EVENT_ERROR_UNKNOWN) + /* Unknown error type */ + error_type = MLX5_MODULE_EVENT_ERROR_UNKNOWN; + events->pme_stats.error_counters[error_type]++; + } + + if (!printk_ratelimit()) + return; + + if (module_status < MLX5_MODULE_STATUS_ERROR) + mlx5_core_info(dev, + "Port module event: module %u, %s\n", + module_num, mlx5_pme_status[module_status - 1]); + + else if (module_status == MLX5_MODULE_STATUS_ERROR) + mlx5_core_info(dev, + "Port module event[error]: module %u, %s, %s\n", + module_num, mlx5_pme_status[module_status - 1], + mlx5_pme_error[error_type]); +} + +void mlx5_get_pme_stats(struct mlx5_core_dev *dev, struct mlx5_pme_stats *stats) +{ + *stats = dev->priv.events->pme_stats; +} + +/* Event handler for the low level mlx5_core driver. + * This handler will process/filter _some_ events and sometimes dispatch + * the equivalent mlx5_dev_event to the HCA interfaces (mlx5_ib and mlx5e) + * + * Other Major feature specific events such as + * clock/eswitch/fpga/FW trace and many others, are handled elsewhere, with + * separate notifiers callbacks, specifically by those mlx5 components. + */ +static int events_notifier(struct notifier_block *nb, + unsigned long type, void *data) +{ + bool dev_event_dispatch = false; + enum mlx5_dev_event dev_event; + unsigned long dev_event_data; + + struct mlx5_eqe *eqe = data; + struct mlx5_events *events; + struct mlx5_core_dev *dev; + u8 port; + + events = mlx5_nb_cof(nb, struct mlx5_events, nb); + dev = events->dev; + + mlx5_core_dbg(dev, "Async eqe type %s, subtype (%d)\n", + eqe_type_str(eqe->type), eqe->sub_type); + switch (eqe->type) { + case MLX5_EVENT_TYPE_PORT_CHANGE: + port = (eqe->data.port.port >> 4) & 0xf; + switch (eqe->sub_type) { + case MLX5_PORT_CHANGE_SUBTYPE_DOWN: + case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE: + case MLX5_PORT_CHANGE_SUBTYPE_LID: + case MLX5_PORT_CHANGE_SUBTYPE_PKEY: + case MLX5_PORT_CHANGE_SUBTYPE_GUID: + case MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG: + case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED: + dev_event = port_subtype2dev(eqe->sub_type); + dev_event_data = (unsigned long)port; + dev_event_dispatch = true; + break; + default: + mlx5_core_warn(dev, "Port event with unrecognized subtype: port %d, sub_type %d\n", + port, eqe->sub_type); + } + break; + case MLX5_EVENT_TYPE_GENERAL_EVENT: + switch (eqe->sub_type) { + case MLX5_GENERAL_SUBTYPE_DELAY_DROP_TIMEOUT: + dev_event = MLX5_DEV_EVENT_DELAY_DROP_TIMEOUT; + dev_event_data = 0; + dev_event_dispatch = true; + break; + default: + mlx5_core_dbg(dev, "General event with unrecognized subtype: sub_type %d\n", + eqe->sub_type); + } + break; + + case MLX5_EVENT_TYPE_PORT_MODULE_EVENT: + port_module_event(events, eqe); + break; + case MLX5_EVENT_TYPE_TEMP_WARN_EVENT: + temp_warning_event(dev, eqe); + break; + default: + return NOTIFY_DONE; + } + + if (dev->event && dev_event_dispatch) + dev->event(dev, dev_event, dev_event_data); + + return NOTIFY_OK; +} + +int mlx5_events_init(struct mlx5_core_dev *dev) +{ + struct mlx5_events *events = kzalloc(sizeof(*events), GFP_KERNEL); + + if (!events) + return -ENOMEM; + + events->dev = dev; + dev->priv.events = events; + return 0; +} + +void mlx5_events_cleanup(struct mlx5_core_dev *dev) +{ + kvfree(dev->priv.events); +} + +void mlx5_events_start(struct mlx5_core_dev *dev) +{ + struct mlx5_events *events = dev->priv.events; + + MLX5_NB_INIT(&events->nb, events_notifier, NOTIFY_ANY); + mlx5_eq_notifier_register(dev, &events->nb); +} + +void mlx5_events_stop(struct mlx5_core_dev *dev) +{ + struct mlx5_events *events = dev->priv.events; + + mlx5_eq_notifier_unregister(dev, &events->nb); +} |