[PATCH v2 09/10] e1000e: Use PCI_EXP_LNKSTA_NLW & FIELD_GET() instead of custom defines/code

From: Ilpo Järvinen
Date: Wed Sep 13 2023 - 08:31:35 EST


e1000e has own copy of PCI Negotiated Link Width field defines. Use the
one from include/uapi/linux/pci_regs.h instead of the custom ones and
remove the custom ones. Also convert to use FIELD_GET().

Suggested-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
---
drivers/net/ethernet/intel/e1000e/defines.h | 2 --
drivers/net/ethernet/intel/e1000e/mac.c | 7 ++++---
2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/intel/e1000e/defines.h b/drivers/net/ethernet/intel/e1000e/defines.h
index 63c3c79380a1..a4d29c9e03a6 100644
--- a/drivers/net/ethernet/intel/e1000e/defines.h
+++ b/drivers/net/ethernet/intel/e1000e/defines.h
@@ -681,8 +681,6 @@
#define PCIE_LINK_STATUS 0x12

#define PCI_HEADER_TYPE_MULTIFUNC 0x80
-#define PCIE_LINK_WIDTH_MASK 0x3F0
-#define PCIE_LINK_WIDTH_SHIFT 4

#define PHY_REVISION_MASK 0xFFFFFFF0
#define MAX_PHY_REG_ADDRESS 0x1F /* 5 bit address bus (0-0x1F) */
diff --git a/drivers/net/ethernet/intel/e1000e/mac.c b/drivers/net/ethernet/intel/e1000e/mac.c
index 5df7ad93f3d7..5340cf73778d 100644
--- a/drivers/net/ethernet/intel/e1000e/mac.c
+++ b/drivers/net/ethernet/intel/e1000e/mac.c
@@ -1,6 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 1999 - 2018 Intel Corporation. */

+#include <linux/bitfield.h>
+
#include "e1000.h"

/**
@@ -25,9 +27,8 @@ s32 e1000e_get_bus_info_pcie(struct e1000_hw *hw)
pci_read_config_word(adapter->pdev,
cap_offset + PCIE_LINK_STATUS,
&pcie_link_status);
- bus->width = (enum e1000_bus_width)((pcie_link_status &
- PCIE_LINK_WIDTH_MASK) >>
- PCIE_LINK_WIDTH_SHIFT);
+ bus->width = (enum e1000_bus_width)FIELD_GET(PCI_EXP_LNKSTA_NLW,
+ pcie_link_status);
}

mac->ops.set_lan_id(hw);
--
2.30.2