Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
net: ti: icssg-prueth: Add ICSSG FW Stats
The ICSSG firmware maintains set of stats called PA_STATS.
Currently the driver only dumps 4 stats. Add support for dumping more
stats.
The offset for different stats are defined as MACROs in icssg_switch_map.h
file. All the offsets are for Slice0. Slice1 offsets are slice0 + 4.
The offset calculation is taken care while reading the stats in
emac_update_hardware_stats().
The statistics are documented in
Documentation/networking/device_drivers/icssg_prueth.rst
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Link: https://patch.msgid.link/20250424095316.2643573-1-danishanwar@ti.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
authored by
MD Danish Anwar
and committed by
Jakub Kicinski
0d15a26b
a427e7f9
+151
-31
+1
Documentation/networking/device_drivers/ethernet/index.rst
+1
Documentation/networking/device_drivers/ethernet/index.rst
+56
Documentation/networking/device_drivers/ethernet/ti/icssg_prueth.rst
+56
Documentation/networking/device_drivers/ethernet/ti/icssg_prueth.rst
···
1
+
.. SPDX-License-Identifier: GPL-2.0
2
+
3
+
==============================================
4
+
Texas Instruments ICSSG PRUETH ethernet driver
5
+
==============================================
6
+
7
+
:Version: 1.0
8
+
9
+
ICSSG Firmware
10
+
==============
11
+
12
+
Every ICSSG core has two Programmable Real-Time Unit(PRUs), two auxiliary
13
+
Real-Time Transfer Unit (RTUs), and two Transmit Real-Time Transfer Units
14
+
(TX_PRUs). Each one of these runs its own firmware. The firmwares combnined are
15
+
referred as ICSSG Firmware.
16
+
17
+
Firmware Statistics
18
+
===================
19
+
20
+
The ICSSG firmware maintains certain statistics which are dumped by the driver
21
+
via ``ethtool -S <interface>``
22
+
23
+
These statistics are as follows,
24
+
25
+
- ``FW_RTU_PKT_DROP``: Diagnostic error counter which increments when RTU drops a locally injected packet due to port being disabled or rule violation.
26
+
- ``FW_Q0_OVERFLOW``: TX overflow counter for queue0
27
+
- ``FW_Q1_OVERFLOW``: TX overflow counter for queue1
28
+
- ``FW_Q2_OVERFLOW``: TX overflow counter for queue2
29
+
- ``FW_Q3_OVERFLOW``: TX overflow counter for queue3
30
+
- ``FW_Q4_OVERFLOW``: TX overflow counter for queue4
31
+
- ``FW_Q5_OVERFLOW``: TX overflow counter for queue5
32
+
- ``FW_Q6_OVERFLOW``: TX overflow counter for queue6
33
+
- ``FW_Q7_OVERFLOW``: TX overflow counter for queue7
34
+
- ``FW_DROPPED_PKT``: This counter is incremented when a packet is dropped at PRU because of rule violation.
35
+
- ``FW_RX_ERROR``: Incremented if there was a CRC error or Min/Max frame error at PRU
36
+
- ``FW_RX_DS_INVALID``: Incremented when RTU detects Data Status invalid condition
37
+
- ``FW_TX_DROPPED_PACKET``: Counter for packets dropped via TX Port
38
+
- ``FW_TX_TS_DROPPED_PACKET``: Counter for packets with TS flag dropped via TX Port
39
+
- ``FW_INF_PORT_DISABLED``: Incremented when RX frame is dropped due to port being disabled
40
+
- ``FW_INF_SAV``: Incremented when RX frame is dropped due to Source Address violation
41
+
- ``FW_INF_SA_DL``: Incremented when RX frame is dropped due to Source Address being in the denylist
42
+
- ``FW_INF_PORT_BLOCKED``: Incremented when RX frame is dropped due to port being blocked and frame being a special frame
43
+
- ``FW_INF_DROP_TAGGED`` : Incremented when RX frame is dropped for being tagged
44
+
- ``FW_INF_DROP_PRIOTAGGED``: Incremented when RX frame is dropped for being priority tagged
45
+
- ``FW_INF_DROP_NOTAG``: Incremented when RX frame is dropped for being untagged
46
+
- ``FW_INF_DROP_NOTMEMBER``: Incremented when RX frame is dropped for port not being member of VLAN
47
+
- ``FW_RX_EOF_SHORT_FRMERR``: Incremented if End Of Frame (EOF) task is scheduled without seeing RX_B1
48
+
- ``FW_RX_B0_DROP_EARLY_EOF``: Incremented when frame is dropped due to Early EOF
49
+
- ``FW_TX_JUMBO_FRM_CUTOFF``: Incremented when frame is cut off to prevent packet size > 2000 Bytes
50
+
- ``FW_RX_EXP_FRAG_Q_DROP``: Incremented when express frame is received in the same queue as the previous fragment
51
+
- ``FW_RX_FIFO_OVERRUN``: RX fifo overrun counter
52
+
- ``FW_CUT_THR_PKT``: Incremented when a packet is forwarded using Cut-Through forwarding method
53
+
- ``FW_HOST_RX_PKT_CNT``: Number of valid packets sent by Rx PRU to Host on PSI
54
+
- ``FW_HOST_TX_PKT_CNT``: Number of valid packets copied by RTU0 to Tx queues
55
+
- ``FW_HOST_EGRESS_Q_PRE_OVERFLOW``: Host Egress Q (Pre-emptible) Overflow Counter
56
+
- ``FW_HOST_EGRESS_Q_EXP_OVERFLOW``: Host Egress Q (Pre-emptible) Overflow Counter
+21
-3
drivers/net/ethernet/ti/icssg/icssg_common.c
+21
-3
drivers/net/ethernet/ti/icssg/icssg_common.c
···
1318
1318
stats->rx_over_errors = emac_get_stat_by_name(emac, "rx_over_errors");
1319
1319
stats->multicast = emac_get_stat_by_name(emac, "rx_multicast_frames");
1320
1320
1321
-
stats->rx_errors = ndev->stats.rx_errors;
1322
-
stats->rx_dropped = ndev->stats.rx_dropped;
1321
+
stats->rx_errors = ndev->stats.rx_errors +
1322
+
emac_get_stat_by_name(emac, "FW_RX_ERROR") +
1323
+
emac_get_stat_by_name(emac, "FW_RX_EOF_SHORT_FRMERR") +
1324
+
emac_get_stat_by_name(emac, "FW_RX_B0_DROP_EARLY_EOF") +
1325
+
emac_get_stat_by_name(emac, "FW_RX_EXP_FRAG_Q_DROP") +
1326
+
emac_get_stat_by_name(emac, "FW_RX_FIFO_OVERRUN");
1327
+
stats->rx_dropped = ndev->stats.rx_dropped +
1328
+
emac_get_stat_by_name(emac, "FW_DROPPED_PKT") +
1329
+
emac_get_stat_by_name(emac, "FW_INF_PORT_DISABLED") +
1330
+
emac_get_stat_by_name(emac, "FW_INF_SAV") +
1331
+
emac_get_stat_by_name(emac, "FW_INF_SA_DL") +
1332
+
emac_get_stat_by_name(emac, "FW_INF_PORT_BLOCKED") +
1333
+
emac_get_stat_by_name(emac, "FW_INF_DROP_TAGGED") +
1334
+
emac_get_stat_by_name(emac, "FW_INF_DROP_PRIOTAGGED") +
1335
+
emac_get_stat_by_name(emac, "FW_INF_DROP_NOTAG") +
1336
+
emac_get_stat_by_name(emac, "FW_INF_DROP_NOTMEMBER");
1323
1337
stats->tx_errors = ndev->stats.tx_errors;
1324
-
stats->tx_dropped = ndev->stats.tx_dropped;
1338
+
stats->tx_dropped = ndev->stats.tx_dropped +
1339
+
emac_get_stat_by_name(emac, "FW_RTU_PKT_DROP") +
1340
+
emac_get_stat_by_name(emac, "FW_TX_DROPPED_PACKET") +
1341
+
emac_get_stat_by_name(emac, "FW_TX_TS_DROPPED_PACKET") +
1342
+
emac_get_stat_by_name(emac, "FW_TX_JUMBO_FRM_CUTOFF");
1325
1343
}
1326
1344
EXPORT_SYMBOL_GPL(icssg_ndo_get_stats64);
1327
1345
+1
-1
drivers/net/ethernet/ti/icssg/icssg_prueth.h
+1
-1
drivers/net/ethernet/ti/icssg/icssg_prueth.h
+3
-5
drivers/net/ethernet/ti/icssg/icssg_stats.c
+3
-5
drivers/net/ethernet/ti/icssg/icssg_stats.c
···
11
11
12
12
#define ICSSG_TX_PACKET_OFFSET 0xA0
13
13
#define ICSSG_TX_BYTE_OFFSET 0xEC
14
-
#define ICSSG_FW_STATS_BASE 0x0248
15
14
16
15
static u32 stats_base[] = { 0x54c, /* Slice 0 stats start */
17
16
0xb18, /* Slice 1 stats start */
···
45
46
46
47
if (prueth->pa_stats) {
47
48
for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) {
48
-
reg = ICSSG_FW_STATS_BASE +
49
-
icssg_all_pa_stats[i].offset *
50
-
PRUETH_NUM_MACS + slice * sizeof(u32);
49
+
reg = icssg_all_pa_stats[i].offset +
50
+
slice * sizeof(u32);
51
51
regmap_read(prueth->pa_stats, reg, &val);
52
52
emac->pa_stats[i] += val;
53
53
}
···
78
80
if (emac->prueth->pa_stats) {
79
81
for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) {
80
82
if (!strcmp(icssg_all_pa_stats[i].name, stat_name))
81
-
return emac->pa_stats[icssg_all_pa_stats[i].offset / sizeof(u32)];
83
+
return emac->pa_stats[i];
82
84
}
83
85
}
84
86
+36
-22
drivers/net/ethernet/ti/icssg/icssg_stats.h
+36
-22
drivers/net/ethernet/ti/icssg/icssg_stats.h
···
155
155
ICSSG_MIIG_STATS(tx_bytes, true),
156
156
};
157
157
158
-
/**
159
-
* struct pa_stats_regs - ICSSG Firmware maintained PA Stats register
160
-
* @fw_rx_cnt: Number of valid packets sent by Rx PRU to Host on PSI
161
-
* @fw_tx_cnt: Number of valid packets copied by RTU0 to Tx queues
162
-
* @fw_tx_pre_overflow: Host Egress Q (Pre-emptible) Overflow Counter
163
-
* @fw_tx_exp_overflow: Host Egress Q (Express) Overflow Counter
164
-
*/
165
-
struct pa_stats_regs {
166
-
u32 fw_rx_cnt;
167
-
u32 fw_tx_cnt;
168
-
u32 fw_tx_pre_overflow;
169
-
u32 fw_tx_exp_overflow;
170
-
};
171
-
172
-
#define ICSSG_PA_STATS(field) \
173
-
{ \
174
-
#field, \
175
-
offsetof(struct pa_stats_regs, field), \
158
+
#define ICSSG_PA_STATS(field) \
159
+
{ \
160
+
#field, \
161
+
field, \
176
162
}
177
163
178
164
struct icssg_pa_stats {
···
167
181
};
168
182
169
183
static const struct icssg_pa_stats icssg_all_pa_stats[] = {
170
-
ICSSG_PA_STATS(fw_rx_cnt),
171
-
ICSSG_PA_STATS(fw_tx_cnt),
172
-
ICSSG_PA_STATS(fw_tx_pre_overflow),
173
-
ICSSG_PA_STATS(fw_tx_exp_overflow),
184
+
ICSSG_PA_STATS(FW_RTU_PKT_DROP),
185
+
ICSSG_PA_STATS(FW_Q0_OVERFLOW),
186
+
ICSSG_PA_STATS(FW_Q1_OVERFLOW),
187
+
ICSSG_PA_STATS(FW_Q2_OVERFLOW),
188
+
ICSSG_PA_STATS(FW_Q3_OVERFLOW),
189
+
ICSSG_PA_STATS(FW_Q4_OVERFLOW),
190
+
ICSSG_PA_STATS(FW_Q5_OVERFLOW),
191
+
ICSSG_PA_STATS(FW_Q6_OVERFLOW),
192
+
ICSSG_PA_STATS(FW_Q7_OVERFLOW),
193
+
ICSSG_PA_STATS(FW_DROPPED_PKT),
194
+
ICSSG_PA_STATS(FW_RX_ERROR),
195
+
ICSSG_PA_STATS(FW_RX_DS_INVALID),
196
+
ICSSG_PA_STATS(FW_TX_DROPPED_PACKET),
197
+
ICSSG_PA_STATS(FW_TX_TS_DROPPED_PACKET),
198
+
ICSSG_PA_STATS(FW_INF_PORT_DISABLED),
199
+
ICSSG_PA_STATS(FW_INF_SAV),
200
+
ICSSG_PA_STATS(FW_INF_SA_DL),
201
+
ICSSG_PA_STATS(FW_INF_PORT_BLOCKED),
202
+
ICSSG_PA_STATS(FW_INF_DROP_TAGGED),
203
+
ICSSG_PA_STATS(FW_INF_DROP_PRIOTAGGED),
204
+
ICSSG_PA_STATS(FW_INF_DROP_NOTAG),
205
+
ICSSG_PA_STATS(FW_INF_DROP_NOTMEMBER),
206
+
ICSSG_PA_STATS(FW_RX_EOF_SHORT_FRMERR),
207
+
ICSSG_PA_STATS(FW_RX_B0_DROP_EARLY_EOF),
208
+
ICSSG_PA_STATS(FW_TX_JUMBO_FRM_CUTOFF),
209
+
ICSSG_PA_STATS(FW_RX_EXP_FRAG_Q_DROP),
210
+
ICSSG_PA_STATS(FW_RX_FIFO_OVERRUN),
211
+
ICSSG_PA_STATS(FW_CUT_THR_PKT),
212
+
ICSSG_PA_STATS(FW_HOST_RX_PKT_CNT),
213
+
ICSSG_PA_STATS(FW_HOST_TX_PKT_CNT),
214
+
ICSSG_PA_STATS(FW_HOST_EGRESS_Q_PRE_OVERFLOW),
215
+
ICSSG_PA_STATS(FW_HOST_EGRESS_Q_EXP_OVERFLOW),
174
216
};
175
217
176
218
#endif /* __NET_TI_ICSSG_STATS_H */
+33
drivers/net/ethernet/ti/icssg/icssg_switch_map.h
+33
drivers/net/ethernet/ti/icssg/icssg_switch_map.h
···
231
231
/* Start of 32 bits PA_STAT counters */
232
232
#define PA_STAT_32b_START_OFFSET 0x0080
233
233
234
+
#define FW_RTU_PKT_DROP 0x0088
235
+
#define FW_Q0_OVERFLOW 0x0090
236
+
#define FW_Q1_OVERFLOW 0x0098
237
+
#define FW_Q2_OVERFLOW 0x00A0
238
+
#define FW_Q3_OVERFLOW 0x00A8
239
+
#define FW_Q4_OVERFLOW 0x00B0
240
+
#define FW_Q5_OVERFLOW 0x00B8
241
+
#define FW_Q6_OVERFLOW 0x00C0
242
+
#define FW_Q7_OVERFLOW 0x00C8
243
+
#define FW_DROPPED_PKT 0x00F8
244
+
#define FW_RX_ERROR 0x0100
245
+
#define FW_RX_DS_INVALID 0x0108
246
+
#define FW_TX_DROPPED_PACKET 0x0110
247
+
#define FW_TX_TS_DROPPED_PACKET 0x0118
248
+
#define FW_INF_PORT_DISABLED 0x0120
249
+
#define FW_INF_SAV 0x0128
250
+
#define FW_INF_SA_DL 0x0130
251
+
#define FW_INF_PORT_BLOCKED 0x0138
252
+
#define FW_INF_DROP_TAGGED 0x0140
253
+
#define FW_INF_DROP_PRIOTAGGED 0x0148
254
+
#define FW_INF_DROP_NOTAG 0x0150
255
+
#define FW_INF_DROP_NOTMEMBER 0x0158
256
+
#define FW_RX_EOF_SHORT_FRMERR 0x0188
257
+
#define FW_RX_B0_DROP_EARLY_EOF 0x0190
258
+
#define FW_TX_JUMBO_FRM_CUTOFF 0x0198
259
+
#define FW_RX_EXP_FRAG_Q_DROP 0x01A0
260
+
#define FW_RX_FIFO_OVERRUN 0x01A8
261
+
#define FW_CUT_THR_PKT 0x01B0
262
+
#define FW_HOST_RX_PKT_CNT 0x0248
263
+
#define FW_HOST_TX_PKT_CNT 0x0250
264
+
#define FW_HOST_EGRESS_Q_PRE_OVERFLOW 0x0258
265
+
#define FW_HOST_EGRESS_Q_EXP_OVERFLOW 0x0260
266
+
234
267
#endif /* __NET_TI_ICSSG_SWITCH_MAP_H */