1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 // Copyright (c) 2018 Mellanox Technologies
4 #include <linux/mlx5/driver.h>
10 struct mlx5_event_nb {
15 /* General events handlers for the low level mlx5_core driver
17 * Other Major feature specific events such as
18 * clock/eswitch/fpga/FW trace and many others, are handled elsewhere, with
19 * separate notifiers callbacks, specifically by those mlx5 components.
21 static int any_notifier(struct notifier_block *, unsigned long, void *);
22 static int temp_warn(struct notifier_block *, unsigned long, void *);
23 static int port_module(struct notifier_block *, unsigned long, void *);
25 /* handler which forwards the event to events->nh, driver notifiers */
26 static int forward_event(struct notifier_block *, unsigned long, void *);
28 static struct mlx5_nb events_nbs_ref[] = {
29 /* Events to be proccessed by mlx5_core */
30 {.nb.notifier_call = any_notifier, .event_type = MLX5_EVENT_TYPE_NOTIFY_ANY },
31 {.nb.notifier_call = temp_warn, .event_type = MLX5_EVENT_TYPE_TEMP_WARN_EVENT },
32 {.nb.notifier_call = port_module, .event_type = MLX5_EVENT_TYPE_PORT_MODULE_EVENT },
34 /* Events to be forwarded (as is) to mlx5 core interfaces (mlx5e/mlx5_ib) */
35 {.nb.notifier_call = forward_event, .event_type = MLX5_EVENT_TYPE_PORT_CHANGE },
36 {.nb.notifier_call = forward_event, .event_type = MLX5_EVENT_TYPE_GENERAL_EVENT },
37 /* QP/WQ resource events to forward */
38 {.nb.notifier_call = forward_event, .event_type = MLX5_EVENT_TYPE_DCT_DRAINED },
39 {.nb.notifier_call = forward_event, .event_type = MLX5_EVENT_TYPE_PATH_MIG },
40 {.nb.notifier_call = forward_event, .event_type = MLX5_EVENT_TYPE_COMM_EST },
41 {.nb.notifier_call = forward_event, .event_type = MLX5_EVENT_TYPE_SQ_DRAINED },
42 {.nb.notifier_call = forward_event, .event_type = MLX5_EVENT_TYPE_SRQ_LAST_WQE },
43 {.nb.notifier_call = forward_event, .event_type = MLX5_EVENT_TYPE_WQ_CATAS_ERROR },
44 {.nb.notifier_call = forward_event, .event_type = MLX5_EVENT_TYPE_PATH_MIG_FAILED },
45 {.nb.notifier_call = forward_event, .event_type = MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR },
46 {.nb.notifier_call = forward_event, .event_type = MLX5_EVENT_TYPE_WQ_ACCESS_ERROR },
48 {.nb.notifier_call = forward_event, .event_type = MLX5_EVENT_TYPE_SRQ_CATAS_ERROR },
49 {.nb.notifier_call = forward_event, .event_type = MLX5_EVENT_TYPE_SRQ_RQ_LIMIT },
53 struct mlx5_core_dev *dev;
54 struct mlx5_event_nb notifiers[ARRAY_SIZE(events_nbs_ref)];
55 /* driver notifier chain */
56 struct atomic_notifier_head nh;
57 /* port module events stats */
58 struct mlx5_pme_stats pme_stats;
61 static const char *eqe_type_str(u8 type)
64 case MLX5_EVENT_TYPE_COMP:
65 return "MLX5_EVENT_TYPE_COMP";
66 case MLX5_EVENT_TYPE_PATH_MIG:
67 return "MLX5_EVENT_TYPE_PATH_MIG";
68 case MLX5_EVENT_TYPE_COMM_EST:
69 return "MLX5_EVENT_TYPE_COMM_EST";
70 case MLX5_EVENT_TYPE_SQ_DRAINED:
71 return "MLX5_EVENT_TYPE_SQ_DRAINED";
72 case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
73 return "MLX5_EVENT_TYPE_SRQ_LAST_WQE";
74 case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT:
75 return "MLX5_EVENT_TYPE_SRQ_RQ_LIMIT";
76 case MLX5_EVENT_TYPE_CQ_ERROR:
77 return "MLX5_EVENT_TYPE_CQ_ERROR";
78 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
79 return "MLX5_EVENT_TYPE_WQ_CATAS_ERROR";
80 case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
81 return "MLX5_EVENT_TYPE_PATH_MIG_FAILED";
82 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
83 return "MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR";
84 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
85 return "MLX5_EVENT_TYPE_WQ_ACCESS_ERROR";
86 case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR:
87 return "MLX5_EVENT_TYPE_SRQ_CATAS_ERROR";
88 case MLX5_EVENT_TYPE_INTERNAL_ERROR:
89 return "MLX5_EVENT_TYPE_INTERNAL_ERROR";
90 case MLX5_EVENT_TYPE_PORT_CHANGE:
91 return "MLX5_EVENT_TYPE_PORT_CHANGE";
92 case MLX5_EVENT_TYPE_GPIO_EVENT:
93 return "MLX5_EVENT_TYPE_GPIO_EVENT";
94 case MLX5_EVENT_TYPE_PORT_MODULE_EVENT:
95 return "MLX5_EVENT_TYPE_PORT_MODULE_EVENT";
96 case MLX5_EVENT_TYPE_TEMP_WARN_EVENT:
97 return "MLX5_EVENT_TYPE_TEMP_WARN_EVENT";
98 case MLX5_EVENT_TYPE_REMOTE_CONFIG:
99 return "MLX5_EVENT_TYPE_REMOTE_CONFIG";
100 case MLX5_EVENT_TYPE_DB_BF_CONGESTION:
101 return "MLX5_EVENT_TYPE_DB_BF_CONGESTION";
102 case MLX5_EVENT_TYPE_STALL_EVENT:
103 return "MLX5_EVENT_TYPE_STALL_EVENT";
104 case MLX5_EVENT_TYPE_CMD:
105 return "MLX5_EVENT_TYPE_CMD";
106 case MLX5_EVENT_TYPE_HOST_PARAMS_CHANGE:
107 return "MLX5_EVENT_TYPE_HOST_PARAMS_CHANGE";
108 case MLX5_EVENT_TYPE_PAGE_REQUEST:
109 return "MLX5_EVENT_TYPE_PAGE_REQUEST";
110 case MLX5_EVENT_TYPE_PAGE_FAULT:
111 return "MLX5_EVENT_TYPE_PAGE_FAULT";
112 case MLX5_EVENT_TYPE_PPS_EVENT:
113 return "MLX5_EVENT_TYPE_PPS_EVENT";
114 case MLX5_EVENT_TYPE_NIC_VPORT_CHANGE:
115 return "MLX5_EVENT_TYPE_NIC_VPORT_CHANGE";
116 case MLX5_EVENT_TYPE_FPGA_ERROR:
117 return "MLX5_EVENT_TYPE_FPGA_ERROR";
118 case MLX5_EVENT_TYPE_FPGA_QP_ERROR:
119 return "MLX5_EVENT_TYPE_FPGA_QP_ERROR";
120 case MLX5_EVENT_TYPE_GENERAL_EVENT:
121 return "MLX5_EVENT_TYPE_GENERAL_EVENT";
122 case MLX5_EVENT_TYPE_MONITOR_COUNTER:
123 return "MLX5_EVENT_TYPE_MONITOR_COUNTER";
124 case MLX5_EVENT_TYPE_DEVICE_TRACER:
125 return "MLX5_EVENT_TYPE_DEVICE_TRACER";
127 return "Unrecognized event";
131 /* handles all FW events, type == eqe->type */
132 static int any_notifier(struct notifier_block *nb,
133 unsigned long type, void *data)
135 struct mlx5_event_nb *event_nb = mlx5_nb_cof(nb, struct mlx5_event_nb, nb);
136 struct mlx5_events *events = event_nb->ctx;
137 struct mlx5_eqe *eqe = data;
139 mlx5_core_dbg(events->dev, "Async eqe type %s, subtype (%d)\n",
140 eqe_type_str(eqe->type), eqe->sub_type);
144 /* type == MLX5_EVENT_TYPE_TEMP_WARN_EVENT */
145 static int temp_warn(struct notifier_block *nb, unsigned long type, void *data)
147 struct mlx5_event_nb *event_nb = mlx5_nb_cof(nb, struct mlx5_event_nb, nb);
148 struct mlx5_events *events = event_nb->ctx;
149 struct mlx5_eqe *eqe = data;
153 value_lsb = be64_to_cpu(eqe->data.temp_warning.sensor_warning_lsb);
154 value_msb = be64_to_cpu(eqe->data.temp_warning.sensor_warning_msb);
156 mlx5_core_warn(events->dev,
157 "High temperature on sensors with bit set %llx %llx",
158 value_msb, value_lsb);
163 /* MLX5_EVENT_TYPE_PORT_MODULE_EVENT */
164 static const char *mlx5_pme_status_to_string(enum port_module_event_status_type status)
167 case MLX5_MODULE_STATUS_PLUGGED:
168 return "Cable plugged";
169 case MLX5_MODULE_STATUS_UNPLUGGED:
170 return "Cable unplugged";
171 case MLX5_MODULE_STATUS_ERROR:
172 return "Cable error";
173 case MLX5_MODULE_STATUS_DISABLED:
174 return "Cable disabled";
176 return "Unknown status";
180 static const char *mlx5_pme_error_to_string(enum port_module_event_error_type error)
183 case MLX5_MODULE_EVENT_ERROR_POWER_BUDGET_EXCEEDED:
184 return "Power budget exceeded";
185 case MLX5_MODULE_EVENT_ERROR_LONG_RANGE_FOR_NON_MLNX:
186 return "Long Range for non MLNX cable";
187 case MLX5_MODULE_EVENT_ERROR_BUS_STUCK:
188 return "Bus stuck (I2C or data shorted)";
189 case MLX5_MODULE_EVENT_ERROR_NO_EEPROM_RETRY_TIMEOUT:
190 return "No EEPROM/retry timeout";
191 case MLX5_MODULE_EVENT_ERROR_ENFORCE_PART_NUMBER_LIST:
192 return "Enforce part number list";
193 case MLX5_MODULE_EVENT_ERROR_UNKNOWN_IDENTIFIER:
194 return "Unknown identifier";
195 case MLX5_MODULE_EVENT_ERROR_HIGH_TEMPERATURE:
196 return "High Temperature";
197 case MLX5_MODULE_EVENT_ERROR_BAD_CABLE:
198 return "Bad or shorted cable/module";
199 case MLX5_MODULE_EVENT_ERROR_PCIE_POWER_SLOT_EXCEEDED:
200 return "One or more network ports have been powered down due to insufficient/unadvertised power on the PCIe slot";
202 return "Unknown error";
206 /* type == MLX5_EVENT_TYPE_PORT_MODULE_EVENT */
207 static int port_module(struct notifier_block *nb, unsigned long type, void *data)
209 struct mlx5_event_nb *event_nb = mlx5_nb_cof(nb, struct mlx5_event_nb, nb);
210 struct mlx5_events *events = event_nb->ctx;
211 struct mlx5_eqe *eqe = data;
213 enum port_module_event_status_type module_status;
214 enum port_module_event_error_type error_type;
215 struct mlx5_eqe_port_module *module_event_eqe;
216 const char *status_str;
219 module_event_eqe = &eqe->data.port_module;
220 module_status = module_event_eqe->module_status &
221 PORT_MODULE_EVENT_MODULE_STATUS_MASK;
222 error_type = module_event_eqe->error_type &
223 PORT_MODULE_EVENT_ERROR_TYPE_MASK;
225 if (module_status < MLX5_MODULE_STATUS_NUM)
226 events->pme_stats.status_counters[module_status]++;
228 if (module_status == MLX5_MODULE_STATUS_ERROR)
229 if (error_type < MLX5_MODULE_EVENT_ERROR_NUM)
230 events->pme_stats.error_counters[error_type]++;
232 if (!printk_ratelimit())
235 module_num = module_event_eqe->module;
236 status_str = mlx5_pme_status_to_string(module_status);
237 if (module_status == MLX5_MODULE_STATUS_ERROR) {
238 const char *error_str = mlx5_pme_error_to_string(error_type);
240 mlx5_core_err(events->dev,
241 "Port module event[error]: module %u, %s, %s\n",
242 module_num, status_str, error_str);
244 mlx5_core_info(events->dev,
245 "Port module event: module %u, %s\n",
246 module_num, status_str);
252 void mlx5_get_pme_stats(struct mlx5_core_dev *dev, struct mlx5_pme_stats *stats)
254 *stats = dev->priv.events->pme_stats;
257 /* forward event as is to registered interfaces (mlx5e/mlx5_ib) */
258 static int forward_event(struct notifier_block *nb, unsigned long event, void *data)
260 struct mlx5_event_nb *event_nb = mlx5_nb_cof(nb, struct mlx5_event_nb, nb);
261 struct mlx5_events *events = event_nb->ctx;
262 struct mlx5_eqe *eqe = data;
264 mlx5_core_dbg(events->dev, "Async eqe type %s, subtype (%d) forward to interfaces\n",
265 eqe_type_str(eqe->type), eqe->sub_type);
266 atomic_notifier_call_chain(&events->nh, event, data);
270 int mlx5_events_init(struct mlx5_core_dev *dev)
272 struct mlx5_events *events = kzalloc(sizeof(*events), GFP_KERNEL);
277 ATOMIC_INIT_NOTIFIER_HEAD(&events->nh);
279 dev->priv.events = events;
283 void mlx5_events_cleanup(struct mlx5_core_dev *dev)
285 kvfree(dev->priv.events);
288 void mlx5_events_start(struct mlx5_core_dev *dev)
290 struct mlx5_events *events = dev->priv.events;
293 for (i = 0; i < ARRAY_SIZE(events_nbs_ref); i++) {
294 events->notifiers[i].nb = events_nbs_ref[i];
295 events->notifiers[i].ctx = events;
296 mlx5_eq_notifier_register(dev, &events->notifiers[i].nb);
300 void mlx5_events_stop(struct mlx5_core_dev *dev)
302 struct mlx5_events *events = dev->priv.events;
305 for (i = ARRAY_SIZE(events_nbs_ref) - 1; i >= 0 ; i--)
306 mlx5_eq_notifier_unregister(dev, &events->notifiers[i].nb);
309 int mlx5_notifier_register(struct mlx5_core_dev *dev, struct notifier_block *nb)
311 struct mlx5_events *events = dev->priv.events;
313 return atomic_notifier_chain_register(&events->nh, nb);
315 EXPORT_SYMBOL(mlx5_notifier_register);
317 int mlx5_notifier_unregister(struct mlx5_core_dev *dev, struct notifier_block *nb)
319 struct mlx5_events *events = dev->priv.events;
321 return atomic_notifier_chain_unregister(&events->nh, nb);
323 EXPORT_SYMBOL(mlx5_notifier_unregister);
325 int mlx5_notifier_call_chain(struct mlx5_events *events, unsigned int event, void *data)
327 return atomic_notifier_call_chain(&events->nh, event, data);