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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2015 - 2025 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/etherdevice.h>
#include "../libwx/wx_type.h"
#include "../libwx/wx_hw.h"
#include "../libwx/wx_lib.h"
#include "../libwx/wx_mbx.h"
#include "../libwx/wx_vf.h"
#include "../libwx/wx_vf_common.h"
#include "ngbevf_type.h"
/* ngbevf_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 ngbevf_pci_tbl[] = {
{ PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860AL_W), 0},
{ PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860A2), 0},
{ PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860A2S), 0},
{ PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860A4), 0},
{ PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860A4S), 0},
{ PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860AL2), 0},
{ PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860AL2S), 0},
{ PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860AL4), 0},
{ PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860AL4S), 0},
{ PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860NCSI), 0},
{ PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860A1), 0},
{ PCI_VDEVICE(WANGXUN, NGBEVF_DEV_ID_EM_WX1860AL1), 0},
/* required last entry */
{ .device = 0 }
};
static const struct net_device_ops ngbevf_netdev_ops = {
.ndo_open = wxvf_open,
.ndo_stop = wxvf_close,
.ndo_start_xmit = wx_xmit_frame,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = wx_set_mac_vf,
};
static void ngbevf_set_num_queues(struct wx *wx)
{
/* Start with base case */
wx->num_rx_queues = 1;
wx->num_tx_queues = 1;
}
static int ngbevf_sw_init(struct wx *wx)
{
struct net_device *netdev = wx->netdev;
struct pci_dev *pdev = wx->pdev;
int err;
/* Initialize pcie info and common capability flags */
err = wx_sw_init(wx);
if (err < 0)
goto err_wx_sw_init;
/* Initialize the mailbox */
err = wx_init_mbx_params_vf(wx);
if (err)
goto err_init_mbx_params;
/* Initialize the device type */
wx->mac.type = wx_mac_em;
wx->mac.max_msix_vectors = NGBEVF_MAX_MSIX_VECTORS;
/* lock to protect mailbox accesses */
spin_lock_init(&wx->mbx.mbx_lock);
err = wx_reset_hw_vf(wx);
if (err) {
wx_err(wx, "PF still in reset state. Is the PF interface up?\n");
goto err_reset_hw;
}
wx_init_hw_vf(wx);
wx_negotiate_api_vf(wx);
if (is_zero_ether_addr(wx->mac.addr))
dev_info(&pdev->dev,
"MAC address not assigned by administrator.\n");
eth_hw_addr_set(netdev, wx->mac.addr);
if (!is_valid_ether_addr(netdev->dev_addr)) {
dev_info(&pdev->dev, "Assigning random MAC address\n");
eth_hw_addr_random(netdev);
ether_addr_copy(wx->mac.addr, netdev->dev_addr);
ether_addr_copy(wx->mac.perm_addr, netdev->dev_addr);
}
wx->mac.max_tx_queues = NGBEVF_MAX_TX_QUEUES;
wx->mac.max_rx_queues = NGBEVF_MAX_RX_QUEUES;
/* Enable dynamic interrupt throttling rates */
wx->rx_itr_setting = 1;
wx->tx_itr_setting = 1;
/* set default ring sizes */
wx->tx_ring_count = NGBEVF_DEFAULT_TXD;
wx->rx_ring_count = NGBEVF_DEFAULT_RXD;
/* set default work limits */
wx->tx_work_limit = NGBEVF_DEFAULT_TX_WORK;
wx->rx_work_limit = NGBEVF_DEFAULT_RX_WORK;
wx->set_num_queues = ngbevf_set_num_queues;
return 0;
err_reset_hw:
kfree(wx->vfinfo);
err_init_mbx_params:
kfree(wx->rss_key);
kfree(wx->mac_table);
err_wx_sw_init:
return err;
}
/**
* ngbevf_probe - Device Initialization Routine
* @pdev: PCI device information struct
* @ent: entry in ngbevf_pci_tbl
*
* Return: return 0 on success, negative on failure
*
* ngbevf_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 ngbevf_probe(struct pci_dev *pdev,
const struct pci_device_id __always_unused *ent)
{
struct net_device *netdev;
struct wx *wx = NULL;
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),
dev_driver_string(&pdev->dev));
if (err) {
dev_err(&pdev->dev,
"pci_request_selected_regions failed 0x%x\n", err);
goto err_pci_disable_dev;
}
pci_set_master(pdev);
netdev = devm_alloc_etherdev_mqs(&pdev->dev,
sizeof(struct wx),
NGBEVF_MAX_TX_QUEUES,
NGBEVF_MAX_RX_QUEUES);
if (!netdev) {
err = -ENOMEM;
goto err_pci_release_regions;
}
SET_NETDEV_DEV(netdev, &pdev->dev);
wx = netdev_priv(netdev);
wx->netdev = netdev;
wx->pdev = pdev;
wx->msg_enable = netif_msg_init(-1, NETIF_MSG_DRV |
NETIF_MSG_PROBE | NETIF_MSG_LINK);
wx->hw_addr = devm_ioremap(&pdev->dev,
pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
if (!wx->hw_addr) {
err = -EIO;
goto err_pci_release_regions;
}
netdev->netdev_ops = &ngbevf_netdev_ops;
/* setup the private structure */
err = ngbevf_sw_init(wx);
if (err)
goto err_pci_release_regions;
netdev->features |= NETIF_F_HIGHDMA;
eth_hw_addr_set(netdev, wx->mac.perm_addr);
ether_addr_copy(netdev->perm_addr, wx->mac.addr);
wxvf_init_service(wx);
err = wx_init_interrupt_scheme(wx);
if (err)
goto err_free_sw_init;
err = register_netdev(netdev);
if (err)
goto err_register;
pci_set_drvdata(pdev, wx);
netif_tx_stop_all_queues(netdev);
return 0;
err_register:
wx_clear_interrupt_scheme(wx);
err_free_sw_init:
timer_delete_sync(&wx->service_timer);
cancel_work_sync(&wx->service_task);
kfree(wx->vfinfo);
kfree(wx->rss_key);
kfree(wx->mac_table);
err_pci_release_regions:
pci_release_selected_regions(pdev,
pci_select_bars(pdev, IORESOURCE_MEM));
err_pci_disable_dev:
pci_disable_device(pdev);
return err;
}
/**
* ngbevf_remove - Device Removal Routine
* @pdev: PCI device information struct
*
* ngbevf_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 ngbevf_remove(struct pci_dev *pdev)
{
wxvf_remove(pdev);
}
static DEFINE_SIMPLE_DEV_PM_OPS(ngbevf_pm_ops, wxvf_suspend, wxvf_resume);
static struct pci_driver ngbevf_driver = {
.name = KBUILD_MODNAME,
.id_table = ngbevf_pci_tbl,
.probe = ngbevf_probe,
.remove = ngbevf_remove,
.shutdown = wxvf_shutdown,
/* Power Management Hooks */
.driver.pm = pm_sleep_ptr(&ngbevf_pm_ops)
};
module_pci_driver(ngbevf_driver);
MODULE_DEVICE_TABLE(pci, ngbevf_pci_tbl);
MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@trustnetic.com>");
MODULE_DESCRIPTION("WangXun(R) Gigabit PCI Express Network Driver");
MODULE_LICENSE("GPL");
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