Commit 0d15a26b authored by MD Danish Anwar's avatar MD Danish Anwar Committed by Jakub Kicinski
Browse files

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: default avatarSimon Horman <horms@kernel.org>
Signed-off-by: default avatarMD Danish Anwar <danishanwar@ti.com>
Link: https://patch.msgid.link/20250424095316.2643573-1-danishanwar@ti.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent a427e7f9

Documentation/networking/device_drivers/ethernet/index.rst

+1 −0
Original line number Diff line number Diff line
@@ -55,6 +55,7 @@ Contents: 
   ti/cpsw_switchdev

   ti/am65_nuss_cpsw_switchdev

   ti/tlan

   ti/icssg_prueth

   wangxun/txgbe

   wangxun/ngbe

Documentation/networking/device_drivers/ethernet/ti/icssg_prueth.rst

0 → 100644
+56 −0
Original line number Diff line number Diff line 
.. SPDX-License-Identifier: GPL-2.0



==============================================

Texas Instruments ICSSG PRUETH ethernet driver

==============================================



:Version: 1.0



ICSSG Firmware

==============



Every ICSSG core has two Programmable Real-Time Unit(PRUs), two auxiliary

Real-Time Transfer Unit (RTUs), and two Transmit Real-Time Transfer Units

(TX_PRUs). Each one of these runs its own firmware. The firmwares combnined are

referred as ICSSG Firmware.



Firmware Statistics

===================



The ICSSG firmware maintains certain statistics which are dumped by the driver

via ``ethtool -S <interface>``



These statistics are as follows,



 - ``FW_RTU_PKT_DROP``: Diagnostic error counter which increments when RTU drops a locally injected packet due to port being disabled or rule violation.

 - ``FW_Q0_OVERFLOW``: TX overflow counter for queue0

 - ``FW_Q1_OVERFLOW``: TX overflow counter for queue1

 - ``FW_Q2_OVERFLOW``: TX overflow counter for queue2

 - ``FW_Q3_OVERFLOW``: TX overflow counter for queue3

 - ``FW_Q4_OVERFLOW``: TX overflow counter for queue4

 - ``FW_Q5_OVERFLOW``: TX overflow counter for queue5

 - ``FW_Q6_OVERFLOW``: TX overflow counter for queue6

 - ``FW_Q7_OVERFLOW``: TX overflow counter for queue7

 - ``FW_DROPPED_PKT``: This counter is incremented when a packet is dropped at PRU because of rule violation.

 - ``FW_RX_ERROR``: Incremented if there was a CRC error or Min/Max frame error at PRU

 - ``FW_RX_DS_INVALID``: Incremented when RTU detects Data Status invalid condition

 - ``FW_TX_DROPPED_PACKET``: Counter for packets dropped via TX Port

 - ``FW_TX_TS_DROPPED_PACKET``: Counter for packets with TS flag dropped via TX Port

 - ``FW_INF_PORT_DISABLED``: Incremented when RX frame is dropped due to port being disabled

 - ``FW_INF_SAV``: Incremented when RX frame is dropped due to Source Address violation

 - ``FW_INF_SA_DL``: Incremented when RX frame is dropped due to Source Address being in the denylist

 - ``FW_INF_PORT_BLOCKED``: Incremented when RX frame is dropped due to port being blocked and frame being a special frame

 - ``FW_INF_DROP_TAGGED`` : Incremented when RX frame is dropped for being tagged

 - ``FW_INF_DROP_PRIOTAGGED``: Incremented when RX frame is dropped for being priority tagged

 - ``FW_INF_DROP_NOTAG``: Incremented when RX frame is dropped for being untagged

 - ``FW_INF_DROP_NOTMEMBER``: Incremented when RX frame is dropped for port not being member of VLAN

 - ``FW_RX_EOF_SHORT_FRMERR``: Incremented if End Of Frame (EOF) task is scheduled without seeing RX_B1

 - ``FW_RX_B0_DROP_EARLY_EOF``: Incremented when frame is dropped due to Early EOF

 - ``FW_TX_JUMBO_FRM_CUTOFF``: Incremented when frame is cut off to prevent packet size > 2000 Bytes

 - ``FW_RX_EXP_FRAG_Q_DROP``: Incremented when express frame is received in the same queue as the previous fragment

 - ``FW_RX_FIFO_OVERRUN``: RX fifo overrun counter

 - ``FW_CUT_THR_PKT``: Incremented when a packet is forwarded using Cut-Through forwarding method

 - ``FW_HOST_RX_PKT_CNT``: Number of valid packets sent by Rx PRU to Host on PSI

 - ``FW_HOST_TX_PKT_CNT``: Number of valid packets copied by RTU0 to Tx queues

 - ``FW_HOST_EGRESS_Q_PRE_OVERFLOW``: Host Egress Q (Pre-emptible) Overflow Counter

 - ``FW_HOST_EGRESS_Q_EXP_OVERFLOW``: Host Egress Q (Pre-emptible) Overflow Counter

drivers/net/ethernet/ti/icssg/icssg_common.c

+21 −3
Original line number Diff line number Diff line
@@ -1318,10 +1318,28 @@ void icssg_ndo_get_stats64(struct net_device *ndev, 
	stats->rx_over_errors = emac_get_stat_by_name(emac, "rx_over_errors");

	stats->multicast      = emac_get_stat_by_name(emac, "rx_multicast_frames");



	stats->rx_errors  = ndev->stats.rx_errors;

	stats->rx_dropped = ndev->stats.rx_dropped;

	stats->rx_errors  = ndev->stats.rx_errors +

			    emac_get_stat_by_name(emac, "FW_RX_ERROR") +

			    emac_get_stat_by_name(emac, "FW_RX_EOF_SHORT_FRMERR") +

			    emac_get_stat_by_name(emac, "FW_RX_B0_DROP_EARLY_EOF") +

			    emac_get_stat_by_name(emac, "FW_RX_EXP_FRAG_Q_DROP") +

			    emac_get_stat_by_name(emac, "FW_RX_FIFO_OVERRUN");

	stats->rx_dropped = ndev->stats.rx_dropped +

			    emac_get_stat_by_name(emac, "FW_DROPPED_PKT") +

			    emac_get_stat_by_name(emac, "FW_INF_PORT_DISABLED") +

			    emac_get_stat_by_name(emac, "FW_INF_SAV") +

			    emac_get_stat_by_name(emac, "FW_INF_SA_DL") +

			    emac_get_stat_by_name(emac, "FW_INF_PORT_BLOCKED") +

			    emac_get_stat_by_name(emac, "FW_INF_DROP_TAGGED") +

			    emac_get_stat_by_name(emac, "FW_INF_DROP_PRIOTAGGED") +

			    emac_get_stat_by_name(emac, "FW_INF_DROP_NOTAG") +

			    emac_get_stat_by_name(emac, "FW_INF_DROP_NOTMEMBER");

	stats->tx_errors  = ndev->stats.tx_errors;

	stats->tx_dropped = ndev->stats.tx_dropped;

	stats->tx_dropped = ndev->stats.tx_dropped +

			    emac_get_stat_by_name(emac, "FW_RTU_PKT_DROP") +

			    emac_get_stat_by_name(emac, "FW_TX_DROPPED_PACKET") +

			    emac_get_stat_by_name(emac, "FW_TX_TS_DROPPED_PACKET") +

			    emac_get_stat_by_name(emac, "FW_TX_JUMBO_FRM_CUTOFF");

}

EXPORT_SYMBOL_GPL(icssg_ndo_get_stats64);

drivers/net/ethernet/ti/icssg/icssg_prueth.h

+1 −1
Original line number Diff line number Diff line
@@ -54,7 +54,7 @@ 


#define ICSSG_MAX_RFLOWS	8	/* per slice */



#define ICSSG_NUM_PA_STATS	4

#define ICSSG_NUM_PA_STATS	32

#define ICSSG_NUM_MIIG_STATS	60

/* Number of ICSSG related stats */

#define ICSSG_NUM_STATS (ICSSG_NUM_MIIG_STATS + ICSSG_NUM_PA_STATS)

drivers/net/ethernet/ti/icssg/icssg_stats.c

+3 −5
Original line number Diff line number Diff line
@@ -11,7 +11,6 @@ 


#define ICSSG_TX_PACKET_OFFSET	0xA0

#define ICSSG_TX_BYTE_OFFSET	0xEC

#define ICSSG_FW_STATS_BASE	0x0248



static u32 stats_base[] = {	0x54c,	/* Slice 0 stats start */

				0xb18,	/* Slice 1 stats start */
@@ -46,9 +45,8 @@ void emac_update_hardware_stats(struct prueth_emac *emac) 


	if (prueth->pa_stats) {

		for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) {

			reg = ICSSG_FW_STATS_BASE +

			      icssg_all_pa_stats[i].offset *

			      PRUETH_NUM_MACS + slice * sizeof(u32);

			reg = icssg_all_pa_stats[i].offset +

			      slice * sizeof(u32);

			regmap_read(prueth->pa_stats, reg, &val);

			emac->pa_stats[i] += val;

		}
@@ -80,7 +78,7 @@ int emac_get_stat_by_name(struct prueth_emac *emac, char *stat_name) 
	if (emac->prueth->pa_stats) {

		for (i = 0; i < ARRAY_SIZE(icssg_all_pa_stats); i++) {

			if (!strcmp(icssg_all_pa_stats[i].name, stat_name))

				return emac->pa_stats[icssg_all_pa_stats[i].offset / sizeof(u32)];

				return emac->pa_stats[i];

		}

	}