netdev - [PATCH net-next 1/3] net: amd-xgbe: Add Support for Yellow Carp Ethernet device

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Date:   Fri, 17 Dec 2021 16:45:55 +0530
From:   Raju Rangoju <rrangoju@....com>
To:     <thomas.lendacky@....com>, <davem@...emloft.net>, <kuba@...nel.org>
CC:     <netdev@...r.kernel.org>, <Shyam-sundar.S-k@....com>,
        <Sudheesh.Mavila@....com>, <Raju.Rangoju@....com>
Subject: [PATCH net-next 1/3] net: amd-xgbe: Add Support for Yellow Carp Ethernet device

From: Raju Rangoju <Raju.Rangoju@....com>

Yellow Carp Ethernet devices use the existing PCI ID but
the window settings for the indirect PCS access have been
altered. Add the check for Yellow Carp Ethernet devices to
use the new register values.

Co-developed-by: Shyam Sundar S K <Shyam-sundar.S-k@....com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@....com>
Signed-off-by: Raju Rangoju <Raju.Rangoju@....com>
---
 drivers/net/ethernet/amd/xgbe/xgbe-common.h |  2 ++
 drivers/net/ethernet/amd/xgbe/xgbe-pci.c    | 12 ++++++++----
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-common.h b/drivers/net/ethernet/amd/xgbe/xgbe-common.h
index 533b8519ec35..0075939121d1 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-common.h
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-common.h
@@ -898,6 +898,8 @@
 #define PCS_V2_WINDOW_SELECT		0x9064
 #define PCS_V2_RV_WINDOW_DEF		0x1060
 #define PCS_V2_RV_WINDOW_SELECT		0x1064
+#define PCS_V2_YC_WINDOW_DEF		0x18060
+#define PCS_V2_YC_WINDOW_SELECT		0x18064
 
 /* PCS register entry bit positions and sizes */
 #define PCS_V2_WINDOW_DEF_OFFSET_INDEX	6
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-pci.c b/drivers/net/ethernet/amd/xgbe/xgbe-pci.c
index 90cb55eb5466..39e606c4d653 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-pci.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-pci.c
@@ -274,10 +274,14 @@ static int xgbe_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	/* Set the PCS indirect addressing definition registers */
 	rdev = pci_get_domain_bus_and_slot(0, 0, PCI_DEVFN(0, 0));
-	if (rdev &&
-	    (rdev->vendor == PCI_VENDOR_ID_AMD) && (rdev->device == 0x15d0)) {
-		pdata->xpcs_window_def_reg = PCS_V2_RV_WINDOW_DEF;
-		pdata->xpcs_window_sel_reg = PCS_V2_RV_WINDOW_SELECT;
+	if (rdev && rdev->vendor == PCI_VENDOR_ID_AMD) {
+		if (rdev->device == 0x15d0) {
+			pdata->xpcs_window_def_reg = PCS_V2_RV_WINDOW_DEF;
+			pdata->xpcs_window_sel_reg = PCS_V2_RV_WINDOW_SELECT;
+		} else if (rdev->device == 0x14b5) {
+			pdata->xpcs_window_def_reg = PCS_V2_YC_WINDOW_DEF;
+			pdata->xpcs_window_sel_reg = PCS_V2_YC_WINDOW_SELECT;
+		}
 	} else {
 		pdata->xpcs_window_def_reg = PCS_V2_WINDOW_DEF;
 		pdata->xpcs_window_sel_reg = PCS_V2_WINDOW_SELECT;
-- 
2.25.1