1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (c) 2018 Mellanox Technologies. */
3
4 #include "en.h"
5 #include "monitor_stats.h"
6 #include "lib/eq.h"
7
8 /* Driver will set the following watch counters list:
9 * Ppcnt.802_3:
10 * a_in_range_length_errors Type: 0x0, Counter: 0x0, group_id = N/A
11 * a_out_of_range_length_field Type: 0x0, Counter: 0x1, group_id = N/A
12 * a_frame_too_long_errors Type: 0x0, Counter: 0x2, group_id = N/A
13 * a_frame_check_sequence_errors Type: 0x0, Counter: 0x3, group_id = N/A
14 * a_alignment_errors Type: 0x0, Counter: 0x4, group_id = N/A
15 * if_out_discards Type: 0x0, Counter: 0x5, group_id = N/A
16 * Q_Counters:
17 * Q[index].rx_out_of_buffer Type: 0x1, Counter: 0x4, group_id = counter_ix
18 */
19
20 #define NUM_REQ_PPCNT_COUNTER_S1 MLX5_CMD_SET_MONITOR_NUM_PPCNT_COUNTER_SET1
21 #define NUM_REQ_Q_COUNTERS_S1 MLX5_CMD_SET_MONITOR_NUM_Q_COUNTERS_SET1
22
mlx5e_monitor_counter_supported(struct mlx5e_priv * priv)23 int mlx5e_monitor_counter_supported(struct mlx5e_priv *priv)
24 {
25 struct mlx5_core_dev *mdev = priv->mdev;
26
27 if (!MLX5_CAP_GEN(mdev, max_num_of_monitor_counters))
28 return false;
29 if (MLX5_CAP_PCAM_REG(mdev, ppcnt) &&
30 MLX5_CAP_GEN(mdev, num_ppcnt_monitor_counters) <
31 NUM_REQ_PPCNT_COUNTER_S1)
32 return false;
33 if (MLX5_CAP_GEN(mdev, num_q_monitor_counters) <
34 NUM_REQ_Q_COUNTERS_S1)
35 return false;
36 return true;
37 }
38
mlx5e_monitor_counter_arm(struct mlx5e_priv * priv)39 void mlx5e_monitor_counter_arm(struct mlx5e_priv *priv)
40 {
41 u32 in[MLX5_ST_SZ_DW(arm_monitor_counter_in)] = {};
42 u32 out[MLX5_ST_SZ_DW(arm_monitor_counter_out)] = {};
43
44 MLX5_SET(arm_monitor_counter_in, in, opcode,
45 MLX5_CMD_OP_ARM_MONITOR_COUNTER);
46 mlx5_cmd_exec(priv->mdev, in, sizeof(in), out, sizeof(out));
47 }
48
mlx5e_monitor_counters_work(struct work_struct * work)49 static void mlx5e_monitor_counters_work(struct work_struct *work)
50 {
51 struct mlx5e_priv *priv = container_of(work, struct mlx5e_priv,
52 monitor_counters_work);
53
54 mutex_lock(&priv->state_lock);
55 mlx5e_update_ndo_stats(priv);
56 mutex_unlock(&priv->state_lock);
57 mlx5e_monitor_counter_arm(priv);
58 }
59
mlx5e_monitor_event_handler(struct notifier_block * nb,unsigned long event,void * eqe)60 static int mlx5e_monitor_event_handler(struct notifier_block *nb,
61 unsigned long event, void *eqe)
62 {
63 struct mlx5e_priv *priv = mlx5_nb_cof(nb, struct mlx5e_priv,
64 monitor_counters_nb);
65 queue_work(priv->wq, &priv->monitor_counters_work);
66 return NOTIFY_OK;
67 }
68
mlx5e_monitor_counter_start(struct mlx5e_priv * priv)69 static void mlx5e_monitor_counter_start(struct mlx5e_priv *priv)
70 {
71 MLX5_NB_INIT(&priv->monitor_counters_nb, mlx5e_monitor_event_handler,
72 MONITOR_COUNTER);
73 mlx5_eq_notifier_register(priv->mdev, &priv->monitor_counters_nb);
74 }
75
mlx5e_monitor_counter_stop(struct mlx5e_priv * priv)76 static void mlx5e_monitor_counter_stop(struct mlx5e_priv *priv)
77 {
78 mlx5_eq_notifier_unregister(priv->mdev, &priv->monitor_counters_nb);
79 cancel_work_sync(&priv->monitor_counters_work);
80 }
81
fill_monitor_counter_ppcnt_set1(int cnt,u32 * in)82 static int fill_monitor_counter_ppcnt_set1(int cnt, u32 *in)
83 {
84 enum mlx5_monitor_counter_ppcnt ppcnt_cnt;
85
86 for (ppcnt_cnt = 0;
87 ppcnt_cnt < NUM_REQ_PPCNT_COUNTER_S1;
88 ppcnt_cnt++, cnt++) {
89 MLX5_SET(set_monitor_counter_in, in,
90 monitor_counter[cnt].type,
91 MLX5_QUERY_MONITOR_CNT_TYPE_PPCNT);
92 MLX5_SET(set_monitor_counter_in, in,
93 monitor_counter[cnt].counter,
94 ppcnt_cnt);
95 }
96 return ppcnt_cnt;
97 }
98
fill_monitor_counter_q_counter_set1(int cnt,int q_counter,u32 * in)99 static int fill_monitor_counter_q_counter_set1(int cnt, int q_counter, u32 *in)
100 {
101 MLX5_SET(set_monitor_counter_in, in,
102 monitor_counter[cnt].type,
103 MLX5_QUERY_MONITOR_CNT_TYPE_Q_COUNTER);
104 MLX5_SET(set_monitor_counter_in, in,
105 monitor_counter[cnt].counter,
106 MLX5_QUERY_MONITOR_Q_COUNTER_RX_OUT_OF_BUFFER);
107 MLX5_SET(set_monitor_counter_in, in,
108 monitor_counter[cnt].counter_group_id,
109 q_counter);
110 return 1;
111 }
112
113 /* check if mlx5e_monitor_counter_supported before calling this function*/
mlx5e_set_monitor_counter(struct mlx5e_priv * priv)114 static void mlx5e_set_monitor_counter(struct mlx5e_priv *priv)
115 {
116 struct mlx5_core_dev *mdev = priv->mdev;
117 int max_num_of_counters = MLX5_CAP_GEN(mdev, max_num_of_monitor_counters);
118 int num_q_counters = MLX5_CAP_GEN(mdev, num_q_monitor_counters);
119 int num_ppcnt_counters = !MLX5_CAP_PCAM_REG(mdev, ppcnt) ? 0 :
120 MLX5_CAP_GEN(mdev, num_ppcnt_monitor_counters);
121 u32 in[MLX5_ST_SZ_DW(set_monitor_counter_in)] = {};
122 u32 out[MLX5_ST_SZ_DW(set_monitor_counter_out)] = {};
123 int q_counter = priv->q_counter;
124 int cnt = 0;
125
126 if (num_ppcnt_counters >= NUM_REQ_PPCNT_COUNTER_S1 &&
127 max_num_of_counters >= (NUM_REQ_PPCNT_COUNTER_S1 + cnt))
128 cnt += fill_monitor_counter_ppcnt_set1(cnt, in);
129
130 if (num_q_counters >= NUM_REQ_Q_COUNTERS_S1 &&
131 max_num_of_counters >= (NUM_REQ_Q_COUNTERS_S1 + cnt) &&
132 q_counter)
133 cnt += fill_monitor_counter_q_counter_set1(cnt, q_counter, in);
134
135 MLX5_SET(set_monitor_counter_in, in, num_of_counters, cnt);
136 MLX5_SET(set_monitor_counter_in, in, opcode,
137 MLX5_CMD_OP_SET_MONITOR_COUNTER);
138
139 mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out));
140 }
141
142 /* check if mlx5e_monitor_counter_supported before calling this function*/
mlx5e_monitor_counter_init(struct mlx5e_priv * priv)143 void mlx5e_monitor_counter_init(struct mlx5e_priv *priv)
144 {
145 INIT_WORK(&priv->monitor_counters_work, mlx5e_monitor_counters_work);
146 mlx5e_monitor_counter_start(priv);
147 mlx5e_set_monitor_counter(priv);
148 mlx5e_monitor_counter_arm(priv);
149 queue_work(priv->wq, &priv->update_stats_work);
150 }
151
mlx5e_monitor_counter_disable(struct mlx5e_priv * priv)152 static void mlx5e_monitor_counter_disable(struct mlx5e_priv *priv)
153 {
154 u32 in[MLX5_ST_SZ_DW(set_monitor_counter_in)] = {};
155 u32 out[MLX5_ST_SZ_DW(set_monitor_counter_out)] = {};
156
157 MLX5_SET(set_monitor_counter_in, in, num_of_counters, 0);
158 MLX5_SET(set_monitor_counter_in, in, opcode,
159 MLX5_CMD_OP_SET_MONITOR_COUNTER);
160
161 mlx5_cmd_exec(priv->mdev, in, sizeof(in), out, sizeof(out));
162 }
163
164 /* check if mlx5e_monitor_counter_supported before calling this function*/
mlx5e_monitor_counter_cleanup(struct mlx5e_priv * priv)165 void mlx5e_monitor_counter_cleanup(struct mlx5e_priv *priv)
166 {
167 mlx5e_monitor_counter_disable(priv);
168 mlx5e_monitor_counter_stop(priv);
169 }
170
