net/mlx5: Add monitor commands layout and event data

Will be used in downstream patch to monitor counter changes
by the HCA and report it to the driver by an event.
The driver will update its counters cached data accordingly.
Signed-off-by: Eyal Davidovich <eyald@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

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

@@ -373,6 +373,8 @@ static int mlx5_internal_err_ret_value(struct mlx5_core_dev *dev, u16 op,
 	case MLX5_CMD_OP_QUERY_VPORT_COUNTER:
 	case MLX5_CMD_OP_ALLOC_Q_COUNTER:
 	case MLX5_CMD_OP_QUERY_Q_COUNTER:
+	case MLX5_CMD_OP_SET_MONITOR_COUNTER:
+	case MLX5_CMD_OP_ARM_MONITOR_COUNTER:
 	case MLX5_CMD_OP_SET_PP_RATE_LIMIT:
 	case MLX5_CMD_OP_QUERY_RATE_LIMIT:
 	case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT:
@@ -522,6 +524,8 @@ const char *mlx5_command_str(int command)
 	MLX5_COMMAND_STR_CASE(ALLOC_Q_COUNTER);
 	MLX5_COMMAND_STR_CASE(DEALLOC_Q_COUNTER);
 	MLX5_COMMAND_STR_CASE(QUERY_Q_COUNTER);
+	MLX5_COMMAND_STR_CASE(SET_MONITOR_COUNTER);
+	MLX5_COMMAND_STR_CASE(ARM_MONITOR_COUNTER);
 	MLX5_COMMAND_STR_CASE(SET_PP_RATE_LIMIT);
 	MLX5_COMMAND_STR_CASE(QUERY_RATE_LIMIT);
 	MLX5_COMMAND_STR_CASE(CREATE_SCHEDULING_ELEMENT);

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

@@ -527,6 +527,9 @@ static u64 gather_async_events_mask(struct mlx5_core_dev *dev)
 	if (MLX5_CAP_MCAM_REG(dev, tracer_registers))
 		async_event_mask |= (1ull << MLX5_EVENT_TYPE_DEVICE_TRACER);
 
+	if (MLX5_CAP_GEN(dev, max_num_of_monitor_counters))
+		async_event_mask |= (1ull << MLX5_EVENT_TYPE_MONITOR_COUNTER);
+
 	return async_event_mask;
 }
 

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

@@ -117,6 +117,8 @@ static const char *eqe_type_str(u8 type)
 		return "MLX5_EVENT_TYPE_FPGA_QP_ERROR";
 	case MLX5_EVENT_TYPE_GENERAL_EVENT:
 		return "MLX5_EVENT_TYPE_GENERAL_EVENT";
+	case MLX5_EVENT_TYPE_MONITOR_COUNTER:
+		return "MLX5_EVENT_TYPE_MONITOR_COUNTER";
 	case MLX5_EVENT_TYPE_DEVICE_TRACER:
 		return "MLX5_EVENT_TYPE_DEVICE_TRACER";
 	default:

include/linux/mlx5/device.h

@@ -330,6 +330,7 @@ enum mlx5_event {
 	MLX5_EVENT_TYPE_TEMP_WARN_EVENT    = 0x17,
 	MLX5_EVENT_TYPE_REMOTE_CONFIG	   = 0x19,
 	MLX5_EVENT_TYPE_GENERAL_EVENT	   = 0x22,
+	MLX5_EVENT_TYPE_MONITOR_COUNTER    = 0x24,
 	MLX5_EVENT_TYPE_PPS_EVENT          = 0x25,
 
 	MLX5_EVENT_TYPE_DB_BF_CONGESTION   = 0x1a,

include/linux/mlx5/mlx5_ifc.h

@@ -161,6 +161,8 @@ enum {
 	MLX5_CMD_OP_ALLOC_Q_COUNTER               = 0x771,
 	MLX5_CMD_OP_DEALLOC_Q_COUNTER             = 0x772,
 	MLX5_CMD_OP_QUERY_Q_COUNTER               = 0x773,
+	MLX5_CMD_OP_SET_MONITOR_COUNTER           = 0x774,
+	MLX5_CMD_OP_ARM_MONITOR_COUNTER           = 0x775,
 	MLX5_CMD_OP_SET_PP_RATE_LIMIT             = 0x780,
 	MLX5_CMD_OP_QUERY_RATE_LIMIT              = 0x781,
 	MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT      = 0x782,
@@ -1200,7 +1202,13 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8	   sw_owner_id[0x1];
 	u8         reserved_at_61f[0x1];
 
-	u8         reserved_at_620[0x80];
+	u8         max_num_of_monitor_counters[0x10];
+	u8         num_ppcnt_monitor_counters[0x10];
+
+	u8         reserved_at_640[0x10];
+	u8         num_q_monitor_counters[0x10];
+
+	u8         reserved_at_660[0x40];
 
 	u8         uctx_cap[0x20];
 
@@ -3808,6 +3816,83 @@ enum {
 	MLX5_VPORT_STATE_OP_MOD_ESW_VPORT   = 0x1,
 };
 
+struct mlx5_ifc_arm_monitor_counter_in_bits {
+	u8         opcode[0x10];
+	u8         uid[0x10];
+
+	u8         reserved_at_20[0x10];
+	u8         op_mod[0x10];
+
+	u8         reserved_at_40[0x20];
+
+	u8         reserved_at_60[0x20];
+};
+
+struct mlx5_ifc_arm_monitor_counter_out_bits {
+	u8         status[0x8];
+	u8         reserved_at_8[0x18];
+
+	u8         syndrome[0x20];
+
+	u8         reserved_at_40[0x40];
+};
+
+enum {
+	MLX5_QUERY_MONITOR_CNT_TYPE_PPCNT     = 0x0,
+	MLX5_QUERY_MONITOR_CNT_TYPE_Q_COUNTER = 0x1,
+};
+
+enum mlx5_monitor_counter_ppcnt {
+	MLX5_QUERY_MONITOR_PPCNT_IN_RANGE_LENGTH_ERRORS      = 0X0,
+	MLX5_QUERY_MONITOR_PPCNT_OUT_OF_RANGE_LENGTH_FIELD   = 0X1,
+	MLX5_QUERY_MONITOR_PPCNT_FRAME_TOO_LONG_ERRORS       = 0X2,
+	MLX5_QUERY_MONITOR_PPCNT_FRAME_CHECK_SEQUENCE_ERRORS = 0X3,
+	MLX5_QUERY_MONITOR_PPCNT_ALIGNMENT_ERRORS            = 0X4,
+	MLX5_QUERY_MONITOR_PPCNT_IF_OUT_DISCARDS             = 0X5,
+};
+
+enum {
+	MLX5_QUERY_MONITOR_Q_COUNTER_RX_OUT_OF_BUFFER     = 0X4,
+};
+
+struct mlx5_ifc_monitor_counter_output_bits {
+	u8         reserved_at_0[0x4];
+	u8         type[0x4];
+	u8         reserved_at_8[0x8];
+	u8         counter[0x10];
+
+	u8         counter_group_id[0x20];
+};
+
+#define MLX5_CMD_SET_MONITOR_NUM_PPCNT_COUNTER_SET1 (6)
+#define MLX5_CMD_SET_MONITOR_NUM_Q_COUNTERS_SET1    (1)
+#define MLX5_CMD_SET_MONITOR_NUM_COUNTER (MLX5_CMD_SET_MONITOR_NUM_PPCNT_COUNTER_SET1 +\
+					  MLX5_CMD_SET_MONITOR_NUM_Q_COUNTERS_SET1)
+
+struct mlx5_ifc_set_monitor_counter_in_bits {
+	u8         opcode[0x10];
+	u8         uid[0x10];
+
+	u8         reserved_at_20[0x10];
+	u8         op_mod[0x10];
+
+	u8         reserved_at_40[0x10];
+	u8         num_of_counters[0x10];
+
+	u8         reserved_at_60[0x20];
+
+	struct mlx5_ifc_monitor_counter_output_bits monitor_counter[MLX5_CMD_SET_MONITOR_NUM_COUNTER];
+};
+
+struct mlx5_ifc_set_monitor_counter_out_bits {
+	u8         status[0x8];
+	u8         reserved_at_8[0x18];
+
+	u8         syndrome[0x20];
+
+	u8         reserved_at_40[0x40];
+};
+
 struct mlx5_ifc_query_vport_state_in_bits {
 	u8         opcode[0x10];
 	u8         reserved_at_10[0x10];