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Message-Id: <20220511032659.641834-2-jiawenwu@trustnetic.com>
Date: Wed, 11 May 2022 11:26:46 +0800
From: Jiawen Wu <jiawenwu@...stnetic.com>
To: netdev@...r.kernel.org
Cc: Jiawen Wu <jiawenwu@...stnetic.com>
Subject: [PATCH net-next 01/14] net: txgbe: Add build support for txgbe ethernet driver
Add doc build infrastructure for txgbe driver.
Initialize PCI memory space for WangXun 10 Gigabit Ethernet devices.
Signed-off-by: Jiawen Wu <jiawenwu@...stnetic.com>
---
.../device_drivers/ethernet/index.rst | 1 +
.../device_drivers/ethernet/wangxun/txgbe.rst | 238 ++++++++++++
MAINTAINERS | 7 +
drivers/net/ethernet/Kconfig | 1 +
drivers/net/ethernet/Makefile | 1 +
drivers/net/ethernet/wangxun/Kconfig | 41 +++
drivers/net/ethernet/wangxun/Makefile | 6 +
drivers/net/ethernet/wangxun/txgbe/Makefile | 9 +
drivers/net/ethernet/wangxun/txgbe/txgbe.h | 77 ++++
.../net/ethernet/wangxun/txgbe/txgbe_main.c | 341 ++++++++++++++++++
.../net/ethernet/wangxun/txgbe/txgbe_type.h | 87 +++++
11 files changed, 809 insertions(+)
create mode 100644 Documentation/networking/device_drivers/ethernet/wangxun/txgbe.rst
create mode 100644 drivers/net/ethernet/wangxun/Kconfig
create mode 100644 drivers/net/ethernet/wangxun/Makefile
create mode 100644 drivers/net/ethernet/wangxun/txgbe/Makefile
create mode 100644 drivers/net/ethernet/wangxun/txgbe/txgbe.h
create mode 100644 drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
create mode 100644 drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
diff --git a/Documentation/networking/device_drivers/ethernet/index.rst b/Documentation/networking/device_drivers/ethernet/index.rst
index 6b5dc203da2b..4766ac9d260e 100644
--- a/Documentation/networking/device_drivers/ethernet/index.rst
+++ b/Documentation/networking/device_drivers/ethernet/index.rst
@@ -52,6 +52,7 @@ Contents:
ti/am65_nuss_cpsw_switchdev
ti/tlan
toshiba/spider_net
+ wangxun/txgbe
.. only:: subproject and html
diff --git a/Documentation/networking/device_drivers/ethernet/wangxun/txgbe.rst b/Documentation/networking/device_drivers/ethernet/wangxun/txgbe.rst
new file mode 100644
index 000000000000..dc9b34acd6cf
--- /dev/null
+++ b/Documentation/networking/device_drivers/ethernet/wangxun/txgbe.rst
@@ -0,0 +1,238 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+================================================================
+Linux Base Driver for WangXun(R) 10 Gigabit PCI Express Adapters
+================================================================
+
+WangXun 10 Gigabit Linux driver.
+Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd.
+
+
+Contents
+========
+
+- Important Note
+- Identifying Your Adapter
+- Additional Features and Configurations
+- Known Issues/Troubleshooting
+- Support
+
+
+Important Notes
+===============
+
+Disable LRO if enabling ip forwarding or bridging
+-------------------------------------------------
+WARNING: The txgbe driver supports the Large Receive Offload (LRO) feature.
+This option offers the lowest CPU utilization for receives but is completely
+incompatible with *routing/ip forwarding* and *bridging*. If enabling ip
+forwarding or bridging is a requirement, it is necessary to disable LRO using
+compile time options as noted in the LRO section later in this document. The
+result of not disabling LRO when combined with ip forwarding or bridging can be
+low throughput or even a kernel panic.
+
+
+Identifying Your Adapter
+========================
+The driver is compatible with WangXun Sapphire Dual ports Ethernet Adapters.
+
+SFP+ Devices with Pluggable Optics
+----------------------------------
+The following is a list of 3rd party SFP+ modules that have been tested and verified.
+
++----------+----------------------+----------------------+
+| Supplier | Type | Part Numbers |
++==========+======================+======================+
+| Avago | SFP+ | AFBR-709SMZ |
++----------+----------------------+----------------------+
+| F-tone | SFP+ | FTCS-851X-02D |
++----------+----------------------+----------------------+
+| Finisar | SFP+ | FTLX8574D3BCL |
++----------+----------------------+----------------------+
+| Hasense | SFP+ | AFBR-709SMZ |
++----------+----------------------+----------------------+
+| HGTECH | SFP+ | MTRS-01X11-G |
++----------+----------------------+----------------------+
+| HP | SFP+ | SR SFP+ 456096-001 |
++----------+----------------------+----------------------+
+| Huawei | SFP+ | AFBR-709SMZ |
++----------+----------------------+----------------------+
+| Intel | SFP+ | FTLX8571D3BCV-IT |
++----------+----------------------+----------------------+
+| JDSU | SFP+ | PLRXPL-SC-S43 |
++----------+----------------------+----------------------+
+| SONT | SFP+ | XP-8G10-01 |
++----------+----------------------+----------------------+
+| Trixon | SFP+ | TPS-TGM3-85DCR |
++----------+----------------------+----------------------+
+| WTD | SFP+ | RTXM228-551 |
++----------+----------------------+----------------------+
+
+Laser turns off for SFP+ when ifconfig ethX down
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"ifconfig ethX down" turns off the laser for SFP+ fiber adapters.
+"ifconfig ethX up" turns on the laser.
+
+
+Additional Features and Configurations
+======================================
+
+Jumbo Frames
+------------
+Jumbo Frames support is enabled by changing the Maximum Transmission Unit
+(MTU) to a value larger than the default value of 1500.
+
+Use the ifconfig command to increase the MTU size. For example, enter the
+following where <x> is the interface number::
+
+ ifconfig eth<x> mtu 9000 up
+
+NOTES:
+- The maximum MTU setting for Jumbo Frames is 9710. This value coincides
+ with the maximum Jumbo Frames size of 9728 bytes.
+- This driver will attempt to use multiple page sized buffers to receive
+ each jumbo packet. This should help to avoid buffer starvation issues
+ when allocating receive packets.
+- For network connections, if you are enabling jumbo frames in a
+ virtual function (VF), jumbo frames must first be enabled in the physical
+ function (PF). The VF MTU setting cannot be larger than the PF MTU.
+
+ethtool
+-------
+The driver utilizes the ethtool interface for driver configuration and
+diagnostics, as well as displaying statistical information. The latest
+ethtool version is required for this functionality. Download it at
+http://ftp.kernel.org/pub/software/network/ethtool/
+
+Hardware Receive Side Coalescing (HW RSC)
+-----------------------------------------
+Sapphire adapters support HW RSC, which can merge multiple
+frames from the same IPv4 TCP/IP flow into a single structure that can span
+one or more descriptors. It works similarly to Software Large Receive Offload
+technique.
+
+You can verify that the driver is using HW RSC by looking at the counter in
+ethtool:
+
+- hw_rsc_count. This counts the total number of Ethernet packets that were
+ being combined.
+
+MAC and VLAN anti-spoofing feature
+----------------------------------
+When a malicious driver attempts to send a spoofed packet, it is dropped by
+the hardware and not transmitted.
+
+An interrupt is sent to the PF driver notifying it of the spoof attempt.
+When a spoofed packet is detected, the PF driver will send the following
+message to the system log (displayed by the "dmesg" command):
+txgbe ethX: txgbe_spoof_check: n spoofed packets detected
+where "X" is the PF interface number; and "n" is number of spoofed packets.
+
+NOTE: This feature can be disabled for a specific Virtual Function (VF)::
+
+ ip link set <pf dev> vf <vf id> spoofchk {off|on}
+
+IPRoute2 Tool for setting MAC address, VLAN and rate limit
+----------------------------------------------------------
+You can set a MAC address of a Virtual Function (VF), a default VLAN and the
+rate limit using the IProute2 tool. Download the latest version of the
+iproute2 tool from Sourceforge if your version does not have all the features
+you require.
+
+Wake on LAN Support (WoL)
+-------------------------
+Some adapters do not support Wake on LAN. To determine if your adapter
+supports Wake on LAN, run::
+
+ ethtool ethX
+
+IEEE 1588 Precision Time Protocol (PTP) Hardware Clock (PHC)
+------------------------------------------------------------
+Precision Time Protocol (PTP) is used to synchronize clocks in a computer
+network and is supported in the txgbe driver.
+
+VXLAN Overlay HW Offloading
+---------------------------
+Virtual Extensible LAN (VXLAN) allows you to extend an L2 network over an L3
+network, which may be useful in a virtualized or cloud environment. Some WangXun(R)
+Ethernet Network devices perform VXLAN processing, offloading it from the
+operating system. This reduces CPU utilization.
+
+VXLAN offloading is controlled by the tx and rx checksum offload options
+provided by ethtool. That is, if tx checksum offload is enabled, and the adapter
+has the capability, VXLAN offloading is also enabled. If rx checksum offload is
+enabled, then the VXLAN packets rx checksum will be offloaded, unless the module
+parameter vxlan_rx=0,0 was used to specifically disable the VXLAN rx offload.
+
+VXLAN Overlay HW Offloading is enabled by default. To view and configure VXLAN
+on a VXLAN-overlay offload enabled device, use the following command::
+
+ # ethtool -k ethX
+
+This command displays the offloads and their current state.
+
+Virtual Function (VF) TX Rate Limit
+-----------------------------------
+Virtual Function (VF) TX rate limit is configured with an ip command from the
+PF interface::
+
+ # ip link set eth0 vf 0 rate 1000
+
+This command sets TX Rate Limit of 1000Mbps for VF 0.
+Note that the limit is set per queue and not for the entire VF interface.
+
+
+Known Issues/Troubleshooting
+============================
+
+UDP Stress Test Dropped Packet Issue
+------------------------------------
+Under small packet UDP stress with the txgbe driver, the system may
+drop UDP packets due to socket buffers being full. Setting the driver Flow
+Control variables to the minimum may resolve the issue. You may also try
+increasing the kernel's default buffer sizes by changing the values::
+
+ cat /proc/sys/net/core/rmem_default
+ cat /proc/sys/net/core/rmem_max
+
+DCB: Generic segmentation offload on causes bandwidth allocation issues
+-----------------------------------------------------------------------
+In order for DCB to work correctly, Generic Segmentation Offload (GSO), also
+known as software TSO, must be disabled using ethtool. Since the hardware
+supports TSO (hardware offload of segmentation), GSO will not be running by
+default. The GSO state can be queried with ethtool using::
+
+ ethtool -k ethX
+
+Txgbe driver supports 64 queues on a platform with more than 64 cores.
+
+Due to known hardware limitations, RSS can only filter in a maximum of 64
+receive queues.
+
+Disable GRO when routing/bridging
+---------------------------------
+Due to a known kernel issue, GRO must be turned off when routing/bridging. GRO
+can be turned off via ethtool::
+
+ ethtool -K ethX gro off
+
+where ethX is the ethernet interface being modified.
+
+Lower than expected performance
+-------------------------------
+Some PCIe x8 slots are actually configured as x4 slots. These slots have
+insufficient bandwidth for full line rate with dual port and quad port
+devices. In addition, if you put a PCIe Generation 3-capable adapter
+into a PCIe Generation 2 slot, you cannot get full bandwidth. The driver
+detects this situation and writes the following message in the system log:
+
+"PCI-Express bandwidth available for this card is not sufficient for optimal
+performance. For optimal performance a x8 PCI-Express slot is required."
+
+If this error occurs, moving your adapter to a true PCIe Generation 3 x8 slot
+will resolve the issue.
+
+
+Support
+=======
+If you got any problem, contact Wangxun support team via support@...stnetic.com
diff --git a/MAINTAINERS b/MAINTAINERS
index d91f6c6e3d3b..b5b0d5b956ef 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -21170,6 +21170,13 @@ L: linux-input@...r.kernel.org
S: Maintained
F: drivers/input/tablet/wacom_serial4.c
+WANGXUN ETHERNET DRIVER
+M: Jiawen Wu <jiawenwu@...stnetic.com>
+L: netdev@...r.kernel.org
+S: Maintained
+F: Documentation/networking/device_drivers/ethernet/wangxun/txgbe.rst
+F: drivers/net/ethernet/wangxun/
+
WATCHDOG DEVICE DRIVERS
M: Wim Van Sebroeck <wim@...ux-watchdog.org>
M: Guenter Roeck <linux@...ck-us.net>
diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
index bd4cb9d7c35d..12f5e7727162 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -86,6 +86,7 @@ source "drivers/net/ethernet/i825xx/Kconfig"
source "drivers/net/ethernet/ibm/Kconfig"
source "drivers/net/ethernet/intel/Kconfig"
source "drivers/net/ethernet/microsoft/Kconfig"
+source "drivers/net/ethernet/wangxun/Kconfig"
source "drivers/net/ethernet/xscale/Kconfig"
config JME
diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
index 8ef43e0c33c0..82db3b15e421 100644
--- a/drivers/net/ethernet/Makefile
+++ b/drivers/net/ethernet/Makefile
@@ -96,6 +96,7 @@ obj-$(CONFIG_NET_VENDOR_TOSHIBA) += toshiba/
obj-$(CONFIG_NET_VENDOR_TUNDRA) += tundra/
obj-$(CONFIG_NET_VENDOR_VERTEXCOM) += vertexcom/
obj-$(CONFIG_NET_VENDOR_VIA) += via/
+obj-$(CONFIG_NET_VENDOR_WANGXUN) += wangxun/
obj-$(CONFIG_NET_VENDOR_WIZNET) += wiznet/
obj-$(CONFIG_NET_VENDOR_XILINX) += xilinx/
obj-$(CONFIG_NET_VENDOR_XIRCOM) += xircom/
diff --git a/drivers/net/ethernet/wangxun/Kconfig b/drivers/net/ethernet/wangxun/Kconfig
new file mode 100644
index 000000000000..3705c539d035
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/Kconfig
@@ -0,0 +1,41 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Wangxun network device configuration
+#
+
+config NET_VENDOR_WANGXUN
+ bool "Wangxun devices"
+ default y
+ help
+ If you have a network (Ethernet) card belonging to this class, say Y.
+
+ Note that the answer to this question doesn't directly affect the
+ kernel: saying N will just cause the configurator to skip all
+ the questions about Intel cards. If you say Y, you will be asked for
+ your specific card in the following questions.
+
+if NET_VENDOR_WANGXUN
+
+config TXGBE
+ tristate "Wangxun(R) 10GbE PCI Express adapters support"
+ depends on PCI
+ depends on PTP_1588_CLOCK_OPTIONAL
+ select PHYLIB
+ help
+ This driver supports Wangxun(R) 10GbE PCI Express family of
+ adapters.
+
+ More specific information on configuring the driver is in
+ <file:Documentation/networking/device_drivers/ethernet/wangxun/txgbe.rst>.
+
+ To compile this driver as a module, choose M here. The module
+ will be called txgbe.
+
+config TXGBE_PCI_RECOVER
+ bool "TXGBE PCIe Recover Switch"
+ default n
+ depends on TXGBE && PCI
+ help
+ Say Y here if you want to do recover PCIe when a PCIe error occurs.
+
+endif # NET_VENDOR_WANGXUN
diff --git a/drivers/net/ethernet/wangxun/Makefile b/drivers/net/ethernet/wangxun/Makefile
new file mode 100644
index 000000000000..c34db1bead25
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the Wangxun network device drivers.
+#
+
+obj-$(CONFIG_TXGBE) += txgbe/
diff --git a/drivers/net/ethernet/wangxun/txgbe/Makefile b/drivers/net/ethernet/wangxun/txgbe/Makefile
new file mode 100644
index 000000000000..725aa1f721f6
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/txgbe/Makefile
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2015 - 2017 Beijing WangXun Technology Co., Ltd.
+#
+# Makefile for the Wangxun(R) 10GbE PCI Express ethernet driver
+#
+
+obj-$(CONFIG_TXGBE) += txgbe.o
+
+txgbe-objs := txgbe_main.o
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe.h b/drivers/net/ethernet/wangxun/txgbe/txgbe.h
new file mode 100644
index 000000000000..dd6b6c03e998
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe.h
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2015 - 2017 Beijing WangXun Technology Co., Ltd. */
+
+#ifndef _TXGBE_H_
+#define _TXGBE_H_
+
+#include "txgbe_type.h"
+
+#ifndef MAX_REQUEST_SIZE
+#define MAX_REQUEST_SIZE 256
+#endif
+
+#define TXGBE_MAX_FDIR_INDICES 63
+
+#define MAX_TX_QUEUES (TXGBE_MAX_FDIR_INDICES + 1)
+
+/* board specific private data structure */
+struct txgbe_adapter {
+ /* OS defined structs */
+ struct net_device *netdev;
+ struct pci_dev *pdev;
+
+ unsigned long state;
+
+ /* structs defined in txgbe_hw.h */
+ struct txgbe_hw hw;
+ u16 msg_enable;
+ struct work_struct service_task;
+
+ u8 __iomem *io_addr; /* Mainly for iounmap use */
+};
+
+enum txgbe_state_t {
+ __TXGBE_TESTING,
+ __TXGBE_RESETTING,
+ __TXGBE_DOWN,
+ __TXGBE_HANGING,
+ __TXGBE_DISABLED,
+ __TXGBE_REMOVING,
+ __TXGBE_SERVICE_SCHED,
+ __TXGBE_SERVICE_INITED,
+ __TXGBE_IN_SFP_INIT,
+ __TXGBE_PTP_RUNNING,
+ __TXGBE_PTP_TX_IN_PROGRESS,
+};
+
+#define TXGBE_NAME "txgbe"
+
+static inline struct device *pci_dev_to_dev(struct pci_dev *pdev)
+{
+ return &pdev->dev;
+}
+
+#define txgbe_dev_info(format, arg...) \
+ dev_info(&adapter->pdev->dev, format, ## arg)
+#define txgbe_dev_warn(format, arg...) \
+ dev_warn(&adapter->pdev->dev, format, ## arg)
+#define txgbe_dev_err(format, arg...) \
+ dev_err(&adapter->pdev->dev, format, ## arg)
+#define txgbe_dev_notice(format, arg...) \
+ dev_notice(&adapter->pdev->dev, format, ## arg)
+#define txgbe_dbg(msglvl, format, arg...) \
+ netif_dbg(adapter, msglvl, adapter->netdev, format, ## arg)
+#define txgbe_info(msglvl, format, arg...) \
+ netif_info(adapter, msglvl, adapter->netdev, format, ## arg)
+#define txgbe_err(msglvl, format, arg...) \
+ netif_err(adapter, msglvl, adapter->netdev, format, ## arg)
+#define txgbe_warn(msglvl, format, arg...) \
+ netif_warn(adapter, msglvl, adapter->netdev, format, ## arg)
+#define txgbe_crit(msglvl, format, arg...) \
+ netif_crit(adapter, msglvl, adapter->netdev, format, ## arg)
+
+#define TXGBE_FAILED_READ_CFG_DWORD 0xffffffffU
+#define TXGBE_FAILED_READ_CFG_WORD 0xffffU
+#define TXGBE_FAILED_READ_CFG_BYTE 0xffU
+
+#endif /* _TXGBE_H_ */
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
new file mode 100644
index 000000000000..54d73679e7c9
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -0,0 +1,341 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2015 - 2017 Beijing WangXun Technology Co., Ltd. */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/string.h>
+#include <linux/aer.h>
+#include <linux/etherdevice.h>
+
+#include "txgbe.h"
+
+char txgbe_driver_name[32] = TXGBE_NAME;
+static const char txgbe_driver_string[] =
+ "WangXun 10 Gigabit PCI Express Network Driver";
+
+static const char txgbe_copyright[] =
+ "Copyright (c) 2015 -2017 Beijing WangXun Technology Co., Ltd";
+
+/* txgbe_pci_tbl - PCI Device ID Table
+ *
+ * Wildcard entries (PCI_ANY_ID) should come last
+ * Last entry must be all 0s
+ *
+ * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
+ * Class, Class Mask, private data (not used) }
+ */
+static const struct pci_device_id txgbe_pci_tbl[] = {
+ { PCI_VDEVICE(TRUSTNETIC, TXGBE_DEV_ID_SP1000), 0},
+ { PCI_VDEVICE(TRUSTNETIC, TXGBE_DEV_ID_WX1820), 0},
+ /* required last entry */
+ { .device = 0 }
+};
+MODULE_DEVICE_TABLE(pci, txgbe_pci_tbl);
+
+MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@...stnetic.com>");
+MODULE_DESCRIPTION("WangXun(R) 10 Gigabit PCI Express Network Driver");
+MODULE_LICENSE("GPL");
+
+#define DEFAULT_DEBUG_LEVEL_SHIFT 3
+
+static struct workqueue_struct *txgbe_wq;
+
+static bool txgbe_check_cfg_remove(struct txgbe_hw *hw, struct pci_dev *pdev);
+
+void txgbe_service_event_schedule(struct txgbe_adapter *adapter)
+{
+ if (!test_bit(__TXGBE_DOWN, &adapter->state) &&
+ !test_bit(__TXGBE_REMOVING, &adapter->state) &&
+ !test_and_set_bit(__TXGBE_SERVICE_SCHED, &adapter->state))
+ queue_work(txgbe_wq, &adapter->service_task);
+}
+
+static void txgbe_remove_adapter(struct txgbe_hw *hw)
+{
+ struct txgbe_adapter *adapter = hw->back;
+
+ if (!hw->hw_addr)
+ return;
+ hw->hw_addr = NULL;
+ txgbe_dev_err("Adapter removed\n");
+ if (test_bit(__TXGBE_SERVICE_INITED, &adapter->state))
+ txgbe_service_event_schedule(adapter);
+}
+
+/**
+ * txgbe_sw_init - Initialize general software structures (struct txgbe_adapter)
+ * @adapter: board private structure to initialize
+ *
+ * txgbe_sw_init initializes the Adapter private data structure.
+ * Fields are initialized based on PCI device information and
+ * OS network device settings (MTU size).
+ **/
+static int txgbe_sw_init(struct txgbe_adapter *adapter)
+{
+ struct txgbe_hw *hw = &adapter->hw;
+ struct pci_dev *pdev = adapter->pdev;
+ int err;
+
+ /* PCI config space info */
+ hw->vendor_id = pdev->vendor;
+ hw->device_id = pdev->device;
+ pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
+ if (hw->revision_id == TXGBE_FAILED_READ_CFG_BYTE &&
+ txgbe_check_cfg_remove(hw, pdev)) {
+ txgbe_err(probe, "read of revision id failed\n");
+ err = -ENODEV;
+ goto out;
+ }
+ hw->subsystem_vendor_id = pdev->subsystem_vendor;
+ hw->subsystem_device_id = pdev->subsystem_device;
+
+ pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &hw->subsystem_id);
+ if (hw->subsystem_id == TXGBE_FAILED_READ_CFG_WORD) {
+ txgbe_err(probe, "read of subsystem id failed\n");
+ err = -ENODEV;
+ goto out;
+ }
+
+ set_bit(__TXGBE_DOWN, &adapter->state);
+out:
+ return err;
+}
+
+static int __txgbe_shutdown(struct pci_dev *pdev, bool *enable_wake)
+{
+ struct txgbe_adapter *adapter = pci_get_drvdata(pdev);
+ struct net_device *netdev = adapter->netdev;
+
+ netif_device_detach(netdev);
+
+ if (!test_and_set_bit(__TXGBE_DISABLED, &adapter->state))
+ pci_disable_device(pdev);
+
+ return 0;
+}
+
+static void txgbe_shutdown(struct pci_dev *pdev)
+{
+ bool wake;
+
+ __txgbe_shutdown(pdev, &wake);
+
+ if (system_state == SYSTEM_POWER_OFF) {
+ pci_wake_from_d3(pdev, wake);
+ pci_set_power_state(pdev, PCI_D3hot);
+ }
+}
+
+/**
+ * txgbe_probe - Device Initialization Routine
+ * @pdev: PCI device information struct
+ * @ent: entry in txgbe_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ *
+ * txgbe_probe initializes an adapter identified by a pci_dev structure.
+ * The OS initialization, configuring of the adapter private structure,
+ * and a hardware reset occur.
+ **/
+static int txgbe_probe(struct pci_dev *pdev,
+ const struct pci_device_id __always_unused *ent)
+{
+ struct net_device *netdev;
+ struct txgbe_adapter *adapter = NULL;
+ struct txgbe_hw *hw = NULL;
+ int err, pci_using_dac;
+ unsigned int indices = MAX_TX_QUEUES;
+ bool disable_dev = false;
+
+ err = pci_enable_device_mem(pdev);
+ if (err)
+ return err;
+
+ if (!dma_set_mask(pci_dev_to_dev(pdev), DMA_BIT_MASK(64)) &&
+ !dma_set_coherent_mask(pci_dev_to_dev(pdev), DMA_BIT_MASK(64))) {
+ pci_using_dac = 1;
+ } else {
+ err = dma_set_mask(pci_dev_to_dev(pdev), DMA_BIT_MASK(32));
+ if (err) {
+ err = dma_set_coherent_mask(pci_dev_to_dev(pdev),
+ DMA_BIT_MASK(32));
+ if (err) {
+ dev_err(pci_dev_to_dev(pdev),
+ "No usable DMA configuration, aborting\n");
+ goto err_dma;
+ }
+ }
+ pci_using_dac = 0;
+ }
+
+ err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
+ IORESOURCE_MEM), txgbe_driver_name);
+ if (err) {
+ dev_err(pci_dev_to_dev(pdev),
+ "pci_request_selected_regions failed 0x%x\n", err);
+ goto err_pci_reg;
+ }
+
+ hw = vmalloc(sizeof(struct txgbe_hw));
+ if (!hw)
+ return -ENOMEM;
+
+ hw->vendor_id = pdev->vendor;
+ hw->device_id = pdev->device;
+ vfree(hw);
+
+ pci_enable_pcie_error_reporting(pdev);
+ pci_set_master(pdev);
+ /* errata 16 */
+ if (MAX_REQUEST_SIZE == 512) {
+ pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL,
+ PCI_EXP_DEVCTL_READRQ,
+ 0x2000);
+ } else {
+ pcie_capability_clear_and_set_word(pdev, PCI_EXP_DEVCTL,
+ PCI_EXP_DEVCTL_READRQ,
+ 0x1000);
+ }
+
+ netdev = alloc_etherdev_mq(sizeof(struct txgbe_adapter), indices);
+ if (!netdev) {
+ err = -ENOMEM;
+ goto err_alloc_etherdev;
+ }
+
+ SET_NETDEV_DEV(netdev, pci_dev_to_dev(pdev));
+
+ adapter = netdev_priv(netdev);
+ adapter->netdev = netdev;
+ adapter->pdev = pdev;
+ hw = &adapter->hw;
+ hw->back = adapter;
+ adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
+
+ hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
+ pci_resource_len(pdev, 0));
+ adapter->io_addr = hw->hw_addr;
+ if (!hw->hw_addr) {
+ err = -EIO;
+ goto err_ioremap;
+ }
+
+ strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
+
+ /* setup the private structure */
+ err = txgbe_sw_init(adapter);
+ if (err)
+ goto err_sw_init;
+
+err_sw_init:
+ iounmap(adapter->io_addr);
+err_ioremap:
+ disable_dev = !test_and_set_bit(__TXGBE_DISABLED, &adapter->state);
+ free_netdev(netdev);
+err_alloc_etherdev:
+ pci_release_selected_regions(pdev,
+ pci_select_bars(pdev, IORESOURCE_MEM));
+err_pci_reg:
+err_dma:
+ if (!adapter || disable_dev)
+ pci_disable_device(pdev);
+ return err;
+}
+
+/**
+ * txgbe_remove - Device Removal Routine
+ * @pdev: PCI device information struct
+ *
+ * txgbe_remove is called by the PCI subsystem to alert the driver
+ * that it should release a PCI device. The could be caused by a
+ * Hot-Plug event, or because the driver is going to be removed from
+ * memory.
+ **/
+static void txgbe_remove(struct pci_dev *pdev)
+{
+ struct txgbe_adapter *adapter = pci_get_drvdata(pdev);
+ struct net_device *netdev;
+ bool disable_dev;
+
+ /* if !adapter then we already cleaned up in probe */
+ if (!adapter)
+ return;
+
+ netdev = adapter->netdev;
+ set_bit(__TXGBE_REMOVING, &adapter->state);
+ cancel_work_sync(&adapter->service_task);
+
+ iounmap(adapter->io_addr);
+ pci_release_selected_regions(pdev,
+ pci_select_bars(pdev, IORESOURCE_MEM));
+
+ disable_dev = !test_and_set_bit(__TXGBE_DISABLED, &adapter->state);
+ free_netdev(netdev);
+
+ pci_disable_pcie_error_reporting(pdev);
+
+ if (disable_dev)
+ pci_disable_device(pdev);
+}
+
+static bool txgbe_check_cfg_remove(struct txgbe_hw *hw, struct pci_dev *pdev)
+{
+ u16 value;
+
+ pci_read_config_word(pdev, PCI_VENDOR_ID, &value);
+ if (value == TXGBE_FAILED_READ_CFG_WORD) {
+ txgbe_remove_adapter(hw);
+ return true;
+ }
+ return false;
+}
+
+static struct pci_driver txgbe_driver = {
+ .name = txgbe_driver_name,
+ .id_table = txgbe_pci_tbl,
+ .probe = txgbe_probe,
+ .remove = txgbe_remove,
+ .shutdown = txgbe_shutdown,
+};
+
+/**
+ * txgbe_init_module - Driver Registration Routine
+ *
+ * txgbe_init_module is the first routine called when the driver is
+ * loaded. All it does is register with the PCI subsystem.
+ **/
+static int __init txgbe_init_module(void)
+{
+ int ret;
+
+ pr_info("%s\n", txgbe_driver_string);
+ pr_info("%s\n", txgbe_copyright);
+
+ txgbe_wq = create_singlethread_workqueue(txgbe_driver_name);
+ if (!txgbe_wq) {
+ pr_err("%s: Failed to create workqueue\n", txgbe_driver_name);
+ return -ENOMEM;
+ }
+
+ ret = pci_register_driver(&txgbe_driver);
+ return ret;
+}
+
+module_init(txgbe_init_module);
+
+/**
+ * txgbe_exit_module - Driver Exit Cleanup Routine
+ *
+ * txgbe_exit_module is called just before the driver is removed
+ * from memory.
+ **/
+static void __exit txgbe_exit_module(void)
+{
+ pci_unregister_driver(&txgbe_driver);
+ if (txgbe_wq)
+ destroy_workqueue(txgbe_wq);
+}
+
+module_exit(txgbe_exit_module);
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
new file mode 100644
index 000000000000..ba9306982317
--- /dev/null
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2015 - 2017 Beijing WangXun Technology Co., Ltd. */
+
+#ifndef _TXGBE_TYPE_H_
+#define _TXGBE_TYPE_H_
+
+#include <linux/types.h>
+#include <linux/netdevice.h>
+
+/* Little Endian defines */
+#ifndef __le16
+#define __le16 u16
+#endif
+#ifndef __le32
+#define __le32 u32
+#endif
+#ifndef __le64
+#define __le64 u64
+
+#endif
+#ifndef __be16
+/* Big Endian defines */
+#define __be16 u16
+#define __be32 u32
+#define __be64 u64
+
+#endif
+
+/************ txgbe_register.h ************/
+/* Vendor ID */
+#ifndef PCI_VENDOR_ID_TRUSTNETIC
+#define PCI_VENDOR_ID_TRUSTNETIC 0x8088
+#endif
+
+/* Device IDs */
+#define TXGBE_DEV_ID_SP1000 0x1001
+#define TXGBE_DEV_ID_WX1820 0x2001
+
+/* Subsystem IDs */
+/* SFP */
+#define TXGBE_ID_SP1000_SFP 0x0000
+#define TXGBE_ID_WX1820_SFP 0x2000
+#define TXGBE_ID_SFP 0x00
+
+/* copper */
+#define TXGBE_ID_SP1000_XAUI 0x1010
+#define TXGBE_ID_WX1820_XAUI 0x2010
+#define TXGBE_ID_XAUI 0x10
+#define TXGBE_ID_SP1000_SGMII 0x1020
+#define TXGBE_ID_WX1820_SGMII 0x2020
+#define TXGBE_ID_SGMII 0x20
+/* backplane */
+#define TXGBE_ID_SP1000_KR_KX_KX4 0x1030
+#define TXGBE_ID_WX1820_KR_KX_KX4 0x2030
+#define TXGBE_ID_KR_KX_KX4 0x30
+/* MAC Interface */
+#define TXGBE_ID_SP1000_MAC_XAUI 0x1040
+#define TXGBE_ID_WX1820_MAC_XAUI 0x2040
+#define TXGBE_ID_MAC_XAUI 0x40
+#define TXGBE_ID_SP1000_MAC_SGMII 0x1060
+#define TXGBE_ID_WX1820_MAC_SGMII 0x2060
+#define TXGBE_ID_MAC_SGMII 0x60
+
+#define TXGBE_NCSI_SUP 0x8000
+#define TXGBE_NCSI_MASK 0x8000
+#define TXGBE_WOL_SUP 0x4000
+#define TXGBE_WOL_MASK 0x4000
+#define TXGBE_DEV_MASK 0xf0
+
+/* Combined interface*/
+#define TXGBE_ID_SFI_XAUI 0x50
+
+/* Revision ID */
+#define TXGBE_SP_MPW 1
+
+struct txgbe_hw {
+ u8 __iomem *hw_addr;
+ void *back;
+ u16 device_id;
+ u16 vendor_id;
+ u16 subsystem_device_id;
+ u16 subsystem_vendor_id;
+ u8 revision_id;
+ u16 subsystem_id;
+};
+
+#endif /* _TXGBE_TYPE_H_ */
--
2.27.0
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