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From 9a28244a1ecbd15cf4c30288589c6413bbfc6753 Mon Sep 17 00:00:00 2001
From: rgaridap <Ramesh.Garidapuri@amd.com>
Date: Tue, 26 Apr 2022 21:43:58 +0530
Subject: [PATCH 42/48] amd-xgbe: Yellow carp devices do not need rrc
Yellow carp devices do not need receiver reset cycle. Hence, avoid
issuing rrc on Yellow carp platforms.
Signed-off-by: rgaridap <Ramesh.Garidapuri@amd.com>
Change-Id: Ie5047e3dd9fa85e8b7b37fbdddf948602475b3d6
---
drivers/net/ethernet/amd/xgbe/xgbe-pci.c | 6 ++++++
drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c | 2 +-
drivers/net/ethernet/amd/xgbe/xgbe.h | 1 +
3 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-pci.c b/drivers/net/ethernet/amd/xgbe/xgbe-pci.c
index 2af3da4b2d05..4da4924e7254 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-pci.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-pci.c
@@ -285,6 +285,10 @@ static int xgbe_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
/* Yellow Carp devices do not need cdr workaround */
pdata->vdata->an_cdr_workaround = 0;
+
+ /* Yellow Carp devices do not need rrc */
+ pdata->vdata->enable_rrc = 0;
+ dev_dbg(dev, "Disabling the RRC on Yellow carp devices\n");
} else {
pdata->xpcs_window_def_reg = PCS_V2_WINDOW_DEF;
pdata->xpcs_window_sel_reg = PCS_V2_WINDOW_SELECT;
@@ -483,6 +487,7 @@ static struct xgbe_version_data xgbe_v2a = {
.tx_desc_prefetch = 5,
.rx_desc_prefetch = 5,
.an_cdr_workaround = 1,
+ .enable_rrc = 1,
};
static struct xgbe_version_data xgbe_v2b = {
@@ -498,6 +503,7 @@ static struct xgbe_version_data xgbe_v2b = {
.tx_desc_prefetch = 5,
.rx_desc_prefetch = 5,
.an_cdr_workaround = 1,
+ .enable_rrc = 1,
};
static const struct pci_device_id xgbe_pci_table[] = {
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
index 2039f26ed067..b66dae94bd54 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
@@ -2763,7 +2763,7 @@ static int xgbe_phy_link_status(struct xgbe_prv_data *pdata, int *an_restart)
}
/* No link, attempt a receiver reset cycle */
- if (phy_data->rrc_count++ > XGBE_RRC_FREQUENCY) {
+ if (pdata->vdata->enable_rrc && phy_data->rrc_count++ > XGBE_RRC_FREQUENCY) {
phy_data->rrc_count = 0;
if (pdata->phy.autoneg == AUTONEG_DISABLE)
xgbe_phy_rrc(pdata);
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h
index bd883f00fad0..8a5e0c68bc43 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe.h
+++ b/drivers/net/ethernet/amd/xgbe/xgbe.h
@@ -1013,6 +1013,7 @@ struct xgbe_version_data {
unsigned int tx_desc_prefetch;
unsigned int rx_desc_prefetch;
unsigned int an_cdr_workaround;
+ unsigned int enable_rrc;
};
struct xgbe_prv_data {
--
2.27.0
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