diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/net/ethernet/wangxun/ngbe/ngbe_main.c | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/ethernet/wangxun/ngbe/ngbe_main.c')
-rw-r--r-- | drivers/net/ethernet/wangxun/ngbe/ngbe_main.c | 778 |
1 files changed, 778 insertions, 0 deletions
diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c new file mode 100644 index 0000000000..a4d63d2f3c --- /dev/null +++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c @@ -0,0 +1,778 @@ +// 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/etherdevice.h> +#include <net/ip.h> +#include <linux/phy.h> +#include <linux/if_vlan.h> + +#include "../libwx/wx_type.h" +#include "../libwx/wx_hw.h" +#include "../libwx/wx_lib.h" +#include "ngbe_type.h" +#include "ngbe_mdio.h" +#include "ngbe_hw.h" +#include "ngbe_ethtool.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 } +}; + +/** + * ngbe_init_type_code - Initialize the shared code + * @wx: pointer to hardware structure + **/ +static void ngbe_init_type_code(struct wx *wx) +{ + int wol_mask = 0, ncsi_mask = 0; + u16 type_mask = 0, val; + + wx->mac.type = wx_mac_em; + type_mask = (u16)(wx->subsystem_device_id & NGBE_OEM_MASK); + ncsi_mask = wx->subsystem_device_id & NGBE_NCSI_MASK; + wol_mask = wx->subsystem_device_id & NGBE_WOL_MASK; + + val = rd32(wx, WX_CFG_PORT_ST); + wx->mac_type = (val & BIT(7)) >> 7 ? + em_mac_type_rgmii : + em_mac_type_mdi; + + wx->wol_hw_supported = (wol_mask == NGBE_WOL_SUP) ? 1 : 0; + wx->ncsi_enabled = (ncsi_mask == NGBE_NCSI_MASK || + type_mask == NGBE_SUBID_OCP_CARD) ? 1 : 0; + + switch (type_mask) { + case NGBE_SUBID_LY_YT8521S_SFP: + case NGBE_SUBID_LY_M88E1512_SFP: + case NGBE_SUBID_YT8521S_SFP_GPIO: + case NGBE_SUBID_INTERNAL_YT8521S_SFP_GPIO: + wx->gpio_ctrl = 1; + break; + default: + wx->gpio_ctrl = 0; + break; + } +} + +/** + * ngbe_init_rss_key - Initialize wx RSS key + * @wx: device handle + * + * Allocates and initializes the RSS key if it is not allocated. + **/ +static inline int ngbe_init_rss_key(struct wx *wx) +{ + u32 *rss_key; + + if (!wx->rss_key) { + rss_key = kzalloc(WX_RSS_KEY_SIZE, GFP_KERNEL); + if (unlikely(!rss_key)) + return -ENOMEM; + + netdev_rss_key_fill(rss_key, WX_RSS_KEY_SIZE); + wx->rss_key = rss_key; + } + + return 0; +} + +/** + * ngbe_sw_init - Initialize general software structures + * @wx: board private structure to initialize + **/ +static int ngbe_sw_init(struct wx *wx) +{ + struct pci_dev *pdev = wx->pdev; + u16 msix_count = 0; + int err = 0; + + wx->mac.num_rar_entries = NGBE_RAR_ENTRIES; + wx->mac.max_rx_queues = NGBE_MAX_RX_QUEUES; + wx->mac.max_tx_queues = NGBE_MAX_TX_QUEUES; + wx->mac.mcft_size = NGBE_MC_TBL_SIZE; + wx->mac.vft_size = NGBE_SP_VFT_TBL_SIZE; + wx->mac.rx_pb_size = NGBE_RX_PB_SIZE; + wx->mac.tx_pb_size = NGBE_TDB_PB_SZ; + + /* PCI config space info */ + err = wx_sw_init(wx); + if (err < 0) + return err; + + /* mac type, phy type , oem type */ + ngbe_init_type_code(wx); + + /* Set common capability flags and settings */ + wx->max_q_vectors = NGBE_MAX_MSIX_VECTORS; + err = wx_get_pcie_msix_counts(wx, &msix_count, NGBE_MAX_MSIX_VECTORS); + if (err) + dev_err(&pdev->dev, "Do not support MSI-X\n"); + wx->mac.max_msix_vectors = msix_count; + + if (ngbe_init_rss_key(wx)) + return -ENOMEM; + + /* enable itr by default in dynamic mode */ + wx->rx_itr_setting = 1; + wx->tx_itr_setting = 1; + + /* set default ring sizes */ + wx->tx_ring_count = NGBE_DEFAULT_TXD; + wx->rx_ring_count = NGBE_DEFAULT_RXD; + + /* set default work limits */ + wx->tx_work_limit = NGBE_DEFAULT_TX_WORK; + wx->rx_work_limit = NGBE_DEFAULT_RX_WORK; + + return 0; +} + +/** + * ngbe_irq_enable - Enable default interrupt generation settings + * @wx: board private structure + * @queues: enable all queues interrupts + **/ +static void ngbe_irq_enable(struct wx *wx, bool queues) +{ + u32 mask; + + /* enable misc interrupt */ + mask = NGBE_PX_MISC_IEN_MASK; + + wr32(wx, WX_GPIO_DDR, WX_GPIO_DDR_0); + wr32(wx, WX_GPIO_INTEN, WX_GPIO_INTEN_0 | WX_GPIO_INTEN_1); + wr32(wx, WX_GPIO_INTTYPE_LEVEL, 0x0); + wr32(wx, WX_GPIO_POLARITY, wx->gpio_ctrl ? 0 : 0x3); + + wr32(wx, WX_PX_MISC_IEN, mask); + + /* mask interrupt */ + if (queues) + wx_intr_enable(wx, NGBE_INTR_ALL); + else + wx_intr_enable(wx, NGBE_INTR_MISC(wx)); +} + +/** + * ngbe_intr - msi/legacy mode Interrupt Handler + * @irq: interrupt number + * @data: pointer to a network interface device structure + **/ +static irqreturn_t ngbe_intr(int __always_unused irq, void *data) +{ + struct wx_q_vector *q_vector; + struct wx *wx = data; + struct pci_dev *pdev; + u32 eicr; + + q_vector = wx->q_vector[0]; + pdev = wx->pdev; + + eicr = wx_misc_isb(wx, WX_ISB_VEC0); + if (!eicr) { + /* shared interrupt alert! + * the interrupt that we masked before the EICR read. + */ + if (netif_running(wx->netdev)) + ngbe_irq_enable(wx, true); + return IRQ_NONE; /* Not our interrupt */ + } + wx->isb_mem[WX_ISB_VEC0] = 0; + if (!(pdev->msi_enabled)) + wr32(wx, WX_PX_INTA, 1); + + wx->isb_mem[WX_ISB_MISC] = 0; + /* would disable interrupts here but it is auto disabled */ + napi_schedule_irqoff(&q_vector->napi); + + if (netif_running(wx->netdev)) + ngbe_irq_enable(wx, false); + + return IRQ_HANDLED; +} + +static irqreturn_t ngbe_msix_other(int __always_unused irq, void *data) +{ + struct wx *wx = data; + + /* re-enable the original interrupt state, no lsc, no queues */ + if (netif_running(wx->netdev)) + ngbe_irq_enable(wx, false); + + return IRQ_HANDLED; +} + +/** + * ngbe_request_msix_irqs - Initialize MSI-X interrupts + * @wx: board private structure + * + * ngbe_request_msix_irqs allocates MSI-X vectors and requests + * interrupts from the kernel. + **/ +static int ngbe_request_msix_irqs(struct wx *wx) +{ + struct net_device *netdev = wx->netdev; + int vector, err; + + for (vector = 0; vector < wx->num_q_vectors; vector++) { + struct wx_q_vector *q_vector = wx->q_vector[vector]; + struct msix_entry *entry = &wx->msix_entries[vector]; + + if (q_vector->tx.ring && q_vector->rx.ring) + snprintf(q_vector->name, sizeof(q_vector->name) - 1, + "%s-TxRx-%d", netdev->name, entry->entry); + else + /* skip this unused q_vector */ + continue; + + err = request_irq(entry->vector, wx_msix_clean_rings, 0, + q_vector->name, q_vector); + if (err) { + wx_err(wx, "request_irq failed for MSIX interrupt %s Error: %d\n", + q_vector->name, err); + goto free_queue_irqs; + } + } + + err = request_irq(wx->msix_entries[vector].vector, + ngbe_msix_other, 0, netdev->name, wx); + + if (err) { + wx_err(wx, "request_irq for msix_other failed: %d\n", err); + goto free_queue_irqs; + } + + return 0; + +free_queue_irqs: + while (vector) { + vector--; + free_irq(wx->msix_entries[vector].vector, + wx->q_vector[vector]); + } + wx_reset_interrupt_capability(wx); + return err; +} + +/** + * ngbe_request_irq - initialize interrupts + * @wx: board private structure + * + * Attempts to configure interrupts using the best available + * capabilities of the hardware and kernel. + **/ +static int ngbe_request_irq(struct wx *wx) +{ + struct net_device *netdev = wx->netdev; + struct pci_dev *pdev = wx->pdev; + int err; + + if (pdev->msix_enabled) + err = ngbe_request_msix_irqs(wx); + else if (pdev->msi_enabled) + err = request_irq(pdev->irq, ngbe_intr, 0, + netdev->name, wx); + else + err = request_irq(pdev->irq, ngbe_intr, IRQF_SHARED, + netdev->name, wx); + + if (err) + wx_err(wx, "request_irq failed, Error %d\n", err); + + return err; +} + +static void ngbe_disable_device(struct wx *wx) +{ + struct net_device *netdev = wx->netdev; + u32 i; + + /* disable all enabled rx queues */ + for (i = 0; i < wx->num_rx_queues; i++) + /* this call also flushes the previous write */ + wx_disable_rx_queue(wx, wx->rx_ring[i]); + /* disable receives */ + wx_disable_rx(wx); + wx_napi_disable_all(wx); + netif_tx_stop_all_queues(netdev); + netif_tx_disable(netdev); + if (wx->gpio_ctrl) + ngbe_sfp_modules_txrx_powerctl(wx, false); + wx_irq_disable(wx); + /* disable transmits in the hardware now that interrupts are off */ + for (i = 0; i < wx->num_tx_queues; i++) { + u8 reg_idx = wx->tx_ring[i]->reg_idx; + + wr32(wx, WX_PX_TR_CFG(reg_idx), WX_PX_TR_CFG_SWFLSH); + } +} + +static void ngbe_down(struct wx *wx) +{ + phy_stop(wx->phydev); + ngbe_disable_device(wx); + wx_clean_all_tx_rings(wx); + wx_clean_all_rx_rings(wx); +} + +static void ngbe_up(struct wx *wx) +{ + wx_configure_vectors(wx); + + /* make sure to complete pre-operations */ + smp_mb__before_atomic(); + wx_napi_enable_all(wx); + /* enable transmits */ + netif_tx_start_all_queues(wx->netdev); + + /* clear any pending interrupts, may auto mask */ + rd32(wx, WX_PX_IC(0)); + rd32(wx, WX_PX_MISC_IC); + ngbe_irq_enable(wx, true); + if (wx->gpio_ctrl) + ngbe_sfp_modules_txrx_powerctl(wx, true); + + phy_start(wx->phydev); +} + +/** + * ngbe_open - Called when a network interface is made active + * @netdev: network interface device structure + * + * Returns 0 on success, negative value on failure + * + * The open entry point is called when a network interface is made + * active by the system (IFF_UP). + **/ +static int ngbe_open(struct net_device *netdev) +{ + struct wx *wx = netdev_priv(netdev); + int err; + + wx_control_hw(wx, true); + + err = wx_setup_resources(wx); + if (err) + return err; + + wx_configure(wx); + + err = ngbe_request_irq(wx); + if (err) + goto err_free_resources; + + err = ngbe_phy_connect(wx); + if (err) + goto err_free_irq; + + err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues); + if (err) + goto err_dis_phy; + + err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues); + if (err) + goto err_dis_phy; + + ngbe_up(wx); + + return 0; +err_dis_phy: + phy_disconnect(wx->phydev); +err_free_irq: + wx_free_irq(wx); +err_free_resources: + wx_free_resources(wx); + return err; +} + +/** + * ngbe_close - Disables a network interface + * @netdev: network interface device structure + * + * Returns 0, this is not allowed to fail + * + * The close entry point is called when an interface is de-activated + * by the OS. The hardware is still under the drivers control, but + * needs to be disabled. A global MAC reset is issued to stop the + * hardware, and all transmit and receive resources are freed. + **/ +static int ngbe_close(struct net_device *netdev) +{ + struct wx *wx = netdev_priv(netdev); + + ngbe_down(wx); + wx_free_irq(wx); + wx_free_resources(wx); + phy_disconnect(wx->phydev); + wx_control_hw(wx, false); + + return 0; +} + +static void ngbe_dev_shutdown(struct pci_dev *pdev, bool *enable_wake) +{ + struct wx *wx = pci_get_drvdata(pdev); + struct net_device *netdev; + u32 wufc = wx->wol; + + netdev = wx->netdev; + rtnl_lock(); + netif_device_detach(netdev); + + if (netif_running(netdev)) + ngbe_close(netdev); + wx_clear_interrupt_scheme(wx); + rtnl_unlock(); + + if (wufc) { + wx_set_rx_mode(netdev); + wx_configure_rx(wx); + wr32(wx, NGBE_PSR_WKUP_CTL, wufc); + } else { + wr32(wx, NGBE_PSR_WKUP_CTL, 0); + } + pci_wake_from_d3(pdev, !!wufc); + *enable_wake = !!wufc; + wx_control_hw(wx, false); + + pci_disable_device(pdev); +} + +static void ngbe_shutdown(struct pci_dev *pdev) +{ + struct wx *wx = pci_get_drvdata(pdev); + bool wake; + + wake = !!wx->wol; + + ngbe_dev_shutdown(pdev, &wake); + + if (system_state == SYSTEM_POWER_OFF) { + pci_wake_from_d3(pdev, wake); + pci_set_power_state(pdev, PCI_D3hot); + } +} + +static const struct net_device_ops ngbe_netdev_ops = { + .ndo_open = ngbe_open, + .ndo_stop = ngbe_close, + .ndo_change_mtu = wx_change_mtu, + .ndo_start_xmit = wx_xmit_frame, + .ndo_set_rx_mode = wx_set_rx_mode, + .ndo_set_features = wx_set_features, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = wx_set_mac, + .ndo_get_stats64 = wx_get_stats64, + .ndo_vlan_rx_add_vid = wx_vlan_rx_add_vid, + .ndo_vlan_rx_kill_vid = wx_vlan_rx_kill_vid, +}; + +/** + * 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 wx identified by a pci_dev structure. + * The OS initialization, configuring of the wx private structure, + * and a hardware reset occur. + **/ +static int ngbe_probe(struct pci_dev *pdev, + const struct pci_device_id __always_unused *ent) +{ + struct net_device *netdev; + u32 e2rom_cksum_cap = 0; + struct wx *wx = NULL; + static int func_nums; + u16 e2rom_ver = 0; + u32 etrack_id = 0; + u32 saved_ver = 0; + 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_set_master(pdev); + + netdev = devm_alloc_etherdev_mqs(&pdev->dev, + sizeof(struct wx), + NGBE_MAX_TX_QUEUES, + NGBE_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 = BIT(3) - 1; + + 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; + } + + wx->driver_name = ngbe_driver_name; + ngbe_set_ethtool_ops(netdev); + netdev->netdev_ops = &ngbe_netdev_ops; + + netdev->features = NETIF_F_SG | NETIF_F_IP_CSUM | + NETIF_F_TSO | NETIF_F_TSO6 | + NETIF_F_RXHASH | NETIF_F_RXCSUM; + netdev->features |= NETIF_F_SCTP_CRC | NETIF_F_TSO_MANGLEID; + netdev->vlan_features |= netdev->features; + netdev->features |= NETIF_F_IPV6_CSUM | NETIF_F_VLAN_FEATURES; + /* copy netdev features into list of user selectable features */ + netdev->hw_features |= netdev->features | NETIF_F_RXALL; + netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC; + netdev->features |= NETIF_F_HIGHDMA; + netdev->hw_features |= NETIF_F_GRO; + netdev->features |= NETIF_F_GRO; + + netdev->priv_flags |= IFF_UNICAST_FLT; + netdev->priv_flags |= IFF_SUPP_NOFCS; + + netdev->min_mtu = ETH_MIN_MTU; + netdev->max_mtu = WX_MAX_JUMBO_FRAME_SIZE - + (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN); + + wx->bd_number = func_nums; + /* setup the private structure */ + err = ngbe_sw_init(wx); + if (err) + goto err_free_mac_table; + + /* check if flash load is done after hw power up */ + err = wx_check_flash_load(wx, NGBE_SPI_ILDR_STATUS_PERST); + if (err) + goto err_free_mac_table; + err = wx_check_flash_load(wx, NGBE_SPI_ILDR_STATUS_PWRRST); + if (err) + goto err_free_mac_table; + + err = wx_mng_present(wx); + if (err) { + dev_err(&pdev->dev, "Management capability is not present\n"); + goto err_free_mac_table; + } + + err = ngbe_reset_hw(wx); + if (err) { + dev_err(&pdev->dev, "HW Init failed: %d\n", err); + goto err_free_mac_table; + } + + if (wx->bus.func == 0) { + wr32(wx, NGBE_CALSUM_CAP_STATUS, 0x0); + wr32(wx, NGBE_EEPROM_VERSION_STORE_REG, 0x0); + } else { + e2rom_cksum_cap = rd32(wx, NGBE_CALSUM_CAP_STATUS); + saved_ver = rd32(wx, NGBE_EEPROM_VERSION_STORE_REG); + } + + wx_init_eeprom_params(wx); + if (wx->bus.func == 0 || e2rom_cksum_cap == 0) { + /* make sure the EEPROM is ready */ + err = ngbe_eeprom_chksum_hostif(wx); + if (err) { + dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n"); + err = -EIO; + goto err_free_mac_table; + } + } + + wx->wol = 0; + if (wx->wol_hw_supported) + wx->wol = NGBE_PSR_WKUP_CTL_MAG; + + netdev->wol_enabled = !!(wx->wol); + wr32(wx, NGBE_PSR_WKUP_CTL, wx->wol); + device_set_wakeup_enable(&pdev->dev, wx->wol); + + /* Save off EEPROM version number and Option Rom version which + * together make a unique identify for the eeprom + */ + if (saved_ver) { + etrack_id = saved_ver; + } else { + wx_read_ee_hostif(wx, + wx->eeprom.sw_region_offset + NGBE_EEPROM_VERSION_H, + &e2rom_ver); + etrack_id = e2rom_ver << 16; + wx_read_ee_hostif(wx, + wx->eeprom.sw_region_offset + NGBE_EEPROM_VERSION_L, + &e2rom_ver); + etrack_id |= e2rom_ver; + wr32(wx, NGBE_EEPROM_VERSION_STORE_REG, etrack_id); + } + snprintf(wx->eeprom_id, sizeof(wx->eeprom_id), + "0x%08x", etrack_id); + + eth_hw_addr_set(netdev, wx->mac.perm_addr); + wx_mac_set_default_filter(wx, wx->mac.perm_addr); + + err = wx_init_interrupt_scheme(wx); + if (err) + goto err_free_mac_table; + + /* phy Interface Configuration */ + err = ngbe_mdio_init(wx); + if (err) + goto err_clear_interrupt_scheme; + + err = register_netdev(netdev); + if (err) + goto err_register; + + pci_set_drvdata(pdev, wx); + + netif_info(wx, probe, netdev, + "PHY: %s, PBA No: Wang Xun GbE Family Controller\n", + wx->mac_type == em_mac_type_mdi ? "Internal" : "External"); + netif_info(wx, probe, netdev, "%pM\n", netdev->dev_addr); + + return 0; + +err_register: + wx_control_hw(wx, false); +err_clear_interrupt_scheme: + wx_clear_interrupt_scheme(wx); +err_free_mac_table: + 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; +} + +/** + * 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) +{ + struct wx *wx = pci_get_drvdata(pdev); + struct net_device *netdev; + + netdev = wx->netdev; + unregister_netdev(netdev); + pci_release_selected_regions(pdev, + pci_select_bars(pdev, IORESOURCE_MEM)); + + kfree(wx->mac_table); + wx_clear_interrupt_scheme(wx); + + pci_disable_device(pdev); +} + +static int ngbe_suspend(struct pci_dev *pdev, pm_message_t state) +{ + bool wake; + + ngbe_dev_shutdown(pdev, &wake); + device_set_wakeup_enable(&pdev->dev, wake); + + return 0; +} + +static int ngbe_resume(struct pci_dev *pdev) +{ + struct net_device *netdev; + struct wx *wx; + u32 err; + + wx = pci_get_drvdata(pdev); + netdev = wx->netdev; + + err = pci_enable_device_mem(pdev); + if (err) { + wx_err(wx, "Cannot enable PCI device from suspend\n"); + return err; + } + pci_set_master(pdev); + device_wakeup_disable(&pdev->dev); + + ngbe_reset_hw(wx); + rtnl_lock(); + err = wx_init_interrupt_scheme(wx); + if (!err && netif_running(netdev)) + err = ngbe_open(netdev); + if (!err) + netif_device_attach(netdev); + rtnl_unlock(); + + return 0; +} + +static struct pci_driver ngbe_driver = { + .name = ngbe_driver_name, + .id_table = ngbe_pci_tbl, + .probe = ngbe_probe, + .remove = ngbe_remove, + .suspend = ngbe_suspend, + .resume = ngbe_resume, + .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"); |