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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2019 - 2022 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 "ngbe.h"
char ngbe_driver_name[] = "ngbe";
/* ngbe_pci_tbl - PCI Device ID Table
*
* { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
* Class, Class Mask, private data (not used) }
*/
static const struct pci_device_id ngbe_pci_tbl[] = {
{ PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL_W), 0},
{ PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A2), 0},
{ PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A2S), 0},
{ PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A4), 0},
{ PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A4S), 0},
{ PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL2), 0},
{ PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL2S), 0},
{ PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL4), 0},
{ PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL4S), 0},
{ PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860LC), 0},
{ PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A1), 0},
{ PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A1L), 0},
/* required last entry */
{ .device = 0 }
};
static void ngbe_dev_shutdown(struct pci_dev *pdev, bool *enable_wake)
{
struct ngbe_adapter *adapter = pci_get_drvdata(pdev);
struct net_device *netdev = adapter->netdev;
netif_device_detach(netdev);
pci_disable_device(pdev);
}
static void ngbe_shutdown(struct pci_dev *pdev)
{
bool wake;
ngbe_dev_shutdown(pdev, &wake);
if (system_state == SYSTEM_POWER_OFF) {
pci_wake_from_d3(pdev, wake);
pci_set_power_state(pdev, PCI_D3hot);
}
}
/**
* ngbe_probe - Device Initialization Routine
* @pdev: PCI device information struct
* @ent: entry in ngbe_pci_tbl
*
* Returns 0 on success, negative on failure
*
* ngbe_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 ngbe_probe(struct pci_dev *pdev,
const struct pci_device_id __always_unused *ent)
{
struct ngbe_adapter *adapter = NULL;
struct net_device *netdev;
int err;
err = pci_enable_device_mem(pdev);
if (err)
return err;
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (err) {
dev_err(&pdev->dev,
"No usable DMA configuration, aborting\n");
goto err_pci_disable_dev;
}
err = pci_request_selected_regions(pdev,
pci_select_bars(pdev, IORESOURCE_MEM),
ngbe_driver_name);
if (err) {
dev_err(&pdev->dev,
"pci_request_selected_regions failed %d\n", err);
goto err_pci_disable_dev;
}
pci_enable_pcie_error_reporting(pdev);
pci_set_master(pdev);
netdev = devm_alloc_etherdev_mqs(&pdev->dev,
sizeof(struct ngbe_adapter),
NGBE_MAX_TX_QUEUES,
NGBE_MAX_RX_QUEUES);
if (!netdev) {
err = -ENOMEM;
goto err_pci_release_regions;
}
SET_NETDEV_DEV(netdev, &pdev->dev);
adapter = netdev_priv(netdev);
adapter->netdev = netdev;
adapter->pdev = pdev;
adapter->io_addr = devm_ioremap(&pdev->dev,
pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
if (!adapter->io_addr) {
err = -EIO;
goto err_pci_release_regions;
}
netdev->features |= NETIF_F_HIGHDMA;
pci_set_drvdata(pdev, adapter);
return 0;
err_pci_release_regions:
pci_disable_pcie_error_reporting(pdev);
pci_release_selected_regions(pdev,
pci_select_bars(pdev, IORESOURCE_MEM));
err_pci_disable_dev:
pci_disable_device(pdev);
return err;
}
/**
* ngbe_remove - Device Removal Routine
* @pdev: PCI device information struct
*
* ngbe_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 ngbe_remove(struct pci_dev *pdev)
{
pci_release_selected_regions(pdev,
pci_select_bars(pdev, IORESOURCE_MEM));
pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
}
static struct pci_driver ngbe_driver = {
.name = ngbe_driver_name,
.id_table = ngbe_pci_tbl,
.probe = ngbe_probe,
.remove = ngbe_remove,
.shutdown = ngbe_shutdown,
};
module_pci_driver(ngbe_driver);
MODULE_DEVICE_TABLE(pci, ngbe_pci_tbl);
MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@net-swift.com>");
MODULE_DESCRIPTION("WangXun(R) Gigabit PCI Express Network Driver");
MODULE_LICENSE("GPL");
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