RZ/G2L E-MAC supports carrier counters.
Add a carrier_counter hw feature bit to struct ravb_hw_info
to add this feature only for RZ/G2L.
Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
Reviewed-by: Sergey Shtylyov <s.shtylyov@xxxxxx>
---
RFC->V1:
* Moved carrier_counters near to tx_counters.
* removed CXR55 and CXR56 registers as it is rx related registers.
* Retained Sergey's Rb tag as it is trivial change.
RFC changes:
* Added Sergey's Rb tag.
---
drivers/net/ethernet/renesas/ravb.h | 3 +++
drivers/net/ethernet/renesas/ravb_main.c | 8 ++++++++
2 files changed, 11 insertions(+)
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index 187346f25104..2138fd12957d 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -200,6 +200,8 @@ enum ravb_reg {
MAHR = 0x05c0,
MALR = 0x05c8,
TROCR = 0x0700, /* R-Car Gen3 and RZ/G2L only */
+ CXR41 = 0x0708, /* RZ/G2L only */
+ CXR42 = 0x0710, /* RZ/G2L only */
CEFCR = 0x0740,
FRECR = 0x0748,
TSFRCR = 0x0750,
@@ -1021,6 +1023,7 @@ struct ravb_hw_info {
/* hardware features */
unsigned internal_delay:1; /* AVB-DMAC has internal delays */
unsigned tx_counters:1; /* E-MAC has TX counters */
+ unsigned carrier_counters:1; /* E-MAC has carrier counters */
unsigned multi_irqs:1; /* AVB-DMAC and E-MAC has multiple irqs */
unsigned gptp:1; /* AVB-DMAC has gPTP support */
unsigned ccc_gac:1; /* AVB-DMAC has gPTP support active in config mode */
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index e93c676d8f57..eefff19d1739 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -2053,6 +2053,13 @@ static struct net_device_stats *ravb_get_stats(struct net_device *ndev)
ravb_write(ndev, 0, TROCR); /* (write clear) */
}
+ if (info->carrier_counters) {
+ nstats->collisions += ravb_read(ndev, CXR41);
+ ravb_write(ndev, 0, CXR41); /* (write clear) */
+ nstats->tx_carrier_errors += ravb_read(ndev, CXR42);
+ ravb_write(ndev, 0, CXR42); /* (write clear) */
+ }
+
nstats->rx_packets = stats0->rx_packets;
nstats->tx_packets = stats0->tx_packets;
nstats->rx_bytes = stats0->rx_bytes;
@@ -2432,6 +2439,7 @@ static const struct ravb_hw_info gbeth_hw_info = {
.rx_max_buf_size = SZ_8K,
.aligned_tx = 1,
.tx_counters = 1,
+ .carrier_counters = 1,
.half_duplex = 1,
};
--
2.17.1
