netdev - [PATCH net-next v2 1/3] net: amd-xgbe: Add Support for Yellow Carp Ethernet device

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Message-ID: <20211220135428.1123575-2-rrangoju@amd.com>
Date:   Mon, 20 Dec 2021 19:24:26 +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 v2 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>

---
changelog:
v1->v2:
 - Rework xgbe_pci_probe logic to set pdata->xpcs_window.. registers for
   all the platforms
---
 drivers/net/ethernet/amd/xgbe/xgbe-common.h | 2 ++
 drivers/net/ethernet/amd/xgbe/xgbe-pci.c    | 4 ++++
 2 files changed, 6 insertions(+)

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..0f930b17980e 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-pci.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-pci.c
@@ -278,6 +278,10 @@ static int xgbe_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	    (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;
+	} else if (rdev && (rdev->vendor == PCI_VENDOR_ID_AMD) &&
+		   (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