// SPDX-License-Identifier: GPL-2.0-only /* Silan SC92031 PCI Fast Ethernet Adapter driver * * Based on vendor drivers: * Silan Fast Ethernet Netcard Driver: * MODULE_AUTHOR ("gaoyonghong"); * MODULE_DESCRIPTION ("SILAN Fast Ethernet driver"); * MODULE_LICENSE("GPL"); * 8139D Fast Ethernet driver: * (C) 2002 by gaoyonghong * MODULE_AUTHOR ("gaoyonghong"); * MODULE_DESCRIPTION ("Rsltek 8139D PCI Fast Ethernet Adapter driver"); * MODULE_LICENSE("GPL"); * Both are almost identical and seem to be based on pci-skeleton.c * * Rewritten for 2.6 by Cesar Eduardo Barros * * A datasheet for this chip can be found at * http://www.silan.com.cn/english/product/pdf/SC92031AY.pdf */ /* Note about set_mac_address: I don't know how to change the hardware * matching, so you need to enable IFF_PROMISC when using it. */ #include <linux/interrupt.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/delay.h> #include <linux/pci.h> #include <linux/dma-mapping.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/mii.h> #include <linux/crc32.h> #include <asm/irq.h> #define SC92031_NAME … /* BAR 0 is MMIO, BAR 1 is PIO */ #define SC92031_USE_PIO … /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). */ static int multicast_filter_limit = …; module_param(multicast_filter_limit, int, 0); MODULE_PARM_DESC(…) …; static int media; module_param(media, int, 0); MODULE_PARM_DESC(…) …; /* Size of the in-memory receive ring. */ #define RX_BUF_LEN_IDX … #define RX_BUF_LEN … /* Number of Tx descriptor registers. */ #define NUM_TX_DESC … /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/ #define MAX_ETH_FRAME_SIZE … /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */ #define TX_BUF_SIZE … #define TX_BUF_TOT_LEN … /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */ #define RX_FIFO_THRESH … /* Time in jiffies before concluding the transmitter is hung. */ #define TX_TIMEOUT … #define SILAN_STATS_NUM … /* media options */ #define AUTOSELECT … #define M10_HALF … #define M10_FULL … #define M100_HALF … #define M100_FULL … /* Symbolic offsets to registers. */ enum silan_registers { … }; #define MII_JAB … #define MII_OutputStatus … #define PHY_16_JAB_ENB … #define PHY_16_PORT_ENB … enum IntrStatusBits { … }; enum TxStatusBits { … }; enum RxStatusBits { … }; enum RxConfigBits { … }; enum TxConfigBits { … }; enum PhyCtrlconfigbits { … }; enum FlowCtrlConfigBits { … }; enum Config0Bits { … }; enum Config1Bits { … }; enum MiiCmd0Bits { … }; enum MiiStatusBits { … }; enum PMConfigBits { … }; /* Locking rules: * priv->lock protects most of the fields of priv and most of the * hardware registers. It does not have to protect against softirqs * between sc92031_disable_interrupts and sc92031_enable_interrupts; * it also does not need to be used in ->open and ->stop while the * device interrupts are off. * Not having to protect against softirqs is very useful due to heavy * use of mdelay() at _sc92031_reset. * Functions prefixed with _sc92031_ must be called with the lock held; * functions prefixed with sc92031_ must be called without the lock held. */ /* Locking rules for the interrupt: * - the interrupt and the tasklet never run at the same time * - neither run between sc92031_disable_interrupts and * sc92031_enable_interrupt */ struct sc92031_priv { … }; /* I don't know which registers can be safely read; however, I can guess * MAC0 is one of them. */ static inline void _sc92031_dummy_read(void __iomem *port_base) { … } static u32 _sc92031_mii_wait(void __iomem *port_base) { … } static u32 _sc92031_mii_cmd(void __iomem *port_base, u32 cmd0, u32 cmd1) { … } static void _sc92031_mii_scan(void __iomem *port_base) { … } static u16 _sc92031_mii_read(void __iomem *port_base, unsigned reg) { … } static void _sc92031_mii_write(void __iomem *port_base, unsigned reg, u16 val) { … } static void sc92031_disable_interrupts(struct net_device *dev) { … } static void sc92031_enable_interrupts(struct net_device *dev) { … } static void _sc92031_disable_tx_rx(struct net_device *dev) { … } static void _sc92031_enable_tx_rx(struct net_device *dev) { … } static void _sc92031_tx_clear(struct net_device *dev) { … } static void _sc92031_set_mar(struct net_device *dev) { … } static void _sc92031_set_rx_config(struct net_device *dev) { … } static bool _sc92031_check_media(struct net_device *dev) { … } static void _sc92031_phy_reset(struct net_device *dev) { … } static void _sc92031_reset(struct net_device *dev) { … } static void _sc92031_tx_tasklet(struct net_device *dev) { … } static void _sc92031_rx_tasklet_error(struct net_device *dev, u32 rx_status, unsigned rx_size) { … } static void _sc92031_rx_tasklet(struct net_device *dev) { … } static void _sc92031_link_tasklet(struct net_device *dev) { … } static void sc92031_tasklet(struct tasklet_struct *t) { … } static irqreturn_t sc92031_interrupt(int irq, void *dev_id) { … } static struct net_device_stats *sc92031_get_stats(struct net_device *dev) { … } static netdev_tx_t sc92031_start_xmit(struct sk_buff *skb, struct net_device *dev) { … } static int sc92031_open(struct net_device *dev) { … } static int sc92031_stop(struct net_device *dev) { … } static void sc92031_set_multicast_list(struct net_device *dev) { … } static void sc92031_tx_timeout(struct net_device *dev, unsigned int txqueue) { … } #ifdef CONFIG_NET_POLL_CONTROLLER static void sc92031_poll_controller(struct net_device *dev) { … } #endif static int sc92031_ethtool_get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *cmd) { … } static int sc92031_ethtool_set_link_ksettings(struct net_device *dev, const struct ethtool_link_ksettings *cmd) { … } static void sc92031_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo) { … } static int sc92031_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wolinfo) { … } static int sc92031_ethtool_nway_reset(struct net_device *dev) { … } static const char sc92031_ethtool_stats_strings[SILAN_STATS_NUM][ETH_GSTRING_LEN] = …; static void sc92031_ethtool_get_strings(struct net_device *dev, u32 stringset, u8 *data) { … } static int sc92031_ethtool_get_sset_count(struct net_device *dev, int sset) { … } static void sc92031_ethtool_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data) { … } static const struct ethtool_ops sc92031_ethtool_ops = …; static const struct net_device_ops sc92031_netdev_ops = …; static int sc92031_probe(struct pci_dev *pdev, const struct pci_device_id *id) { … } static void sc92031_remove(struct pci_dev *pdev) { … } static int __maybe_unused sc92031_suspend(struct device *dev_d) { … } static int __maybe_unused sc92031_resume(struct device *dev_d) { … } static const struct pci_device_id sc92031_pci_device_id_table[] = …; MODULE_DEVICE_TABLE(pci, sc92031_pci_device_id_table); static SIMPLE_DEV_PM_OPS(sc92031_pm_ops, sc92031_suspend, sc92031_resume); static struct pci_driver sc92031_pci_driver = …; module_pci_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
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