// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2015 Microchip Technology */ #include <linux/module.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/usb.h> #include <linux/crc32.h> #include <linux/signal.h> #include <linux/slab.h> #include <linux/if_vlan.h> #include <linux/uaccess.h> #include <linux/linkmode.h> #include <linux/list.h> #include <linux/ip.h> #include <linux/ipv6.h> #include <linux/mdio.h> #include <linux/phy.h> #include <net/ip6_checksum.h> #include <net/vxlan.h> #include <linux/interrupt.h> #include <linux/irqdomain.h> #include <linux/irq.h> #include <linux/irqchip/chained_irq.h> #include <linux/microchipphy.h> #include <linux/phy_fixed.h> #include <linux/of_mdio.h> #include <linux/of_net.h> #include "lan78xx.h" #define DRIVER_AUTHOR … #define DRIVER_DESC … #define DRIVER_NAME … #define TX_TIMEOUT_JIFFIES … #define THROTTLE_JIFFIES … #define UNLINK_TIMEOUT_MS … #define RX_MAX_QUEUE_MEMORY … #define SS_USB_PKT_SIZE … #define HS_USB_PKT_SIZE … #define FS_USB_PKT_SIZE … #define MAX_RX_FIFO_SIZE … #define MAX_TX_FIFO_SIZE … #define FLOW_THRESHOLD(n) … #define FLOW_CTRL_THRESHOLD(on, off) … /* Flow control turned on when Rx FIFO level rises above this level (bytes) */ #define FLOW_ON_SS … #define FLOW_ON_HS … /* Flow control turned off when Rx FIFO level falls below this level (bytes) */ #define FLOW_OFF_SS … #define FLOW_OFF_HS … #define DEFAULT_BURST_CAP_SIZE … #define DEFAULT_BULK_IN_DELAY … #define MAX_SINGLE_PACKET_SIZE … #define DEFAULT_TX_CSUM_ENABLE … #define DEFAULT_RX_CSUM_ENABLE … #define DEFAULT_TSO_CSUM_ENABLE … #define DEFAULT_VLAN_FILTER_ENABLE … #define DEFAULT_VLAN_RX_OFFLOAD … #define TX_ALIGNMENT … #define RXW_PADDING … #define LAN78XX_USB_VENDOR_ID … #define LAN7800_USB_PRODUCT_ID … #define LAN7850_USB_PRODUCT_ID … #define LAN7801_USB_PRODUCT_ID … #define LAN78XX_EEPROM_MAGIC … #define LAN78XX_OTP_MAGIC … #define AT29M2AF_USB_VENDOR_ID … #define AT29M2AF_USB_PRODUCT_ID … #define MII_READ … #define MII_WRITE … #define EEPROM_INDICATOR … #define EEPROM_MAC_OFFSET … #define MAX_EEPROM_SIZE … #define OTP_INDICATOR_1 … #define OTP_INDICATOR_2 … #define WAKE_ALL … #define TX_URB_NUM … #define TX_SS_URB_NUM … #define TX_HS_URB_NUM … #define TX_FS_URB_NUM … /* A single URB buffer must be large enough to hold a complete jumbo packet */ #define TX_SS_URB_SIZE … #define TX_HS_URB_SIZE … #define TX_FS_URB_SIZE … #define RX_SS_URB_NUM … #define RX_HS_URB_NUM … #define RX_FS_URB_NUM … #define RX_SS_URB_SIZE … #define RX_HS_URB_SIZE … #define RX_FS_URB_SIZE … #define SS_BURST_CAP_SIZE … #define SS_BULK_IN_DELAY … #define HS_BURST_CAP_SIZE … #define HS_BULK_IN_DELAY … #define FS_BURST_CAP_SIZE … #define FS_BULK_IN_DELAY … #define TX_CMD_LEN … #define TX_SKB_MIN_LEN … #define LAN78XX_TSO_SIZE(dev) … #define RX_CMD_LEN … #define RX_SKB_MIN_LEN … #define RX_MAX_FRAME_LEN(mtu) … /* USB related defines */ #define BULK_IN_PIPE … #define BULK_OUT_PIPE … /* default autosuspend delay (mSec)*/ #define DEFAULT_AUTOSUSPEND_DELAY … /* statistic update interval (mSec) */ #define STAT_UPDATE_TIMER … /* time to wait for MAC or FCT to stop (jiffies) */ #define HW_DISABLE_TIMEOUT … /* time to wait between polling MAC or FCT state (ms) */ #define HW_DISABLE_DELAY_MS … /* defines interrupts from interrupt EP */ #define MAX_INT_EP … #define INT_EP_INTEP … #define INT_EP_OTP_WR_DONE … #define INT_EP_EEE_TX_LPI_START … #define INT_EP_EEE_TX_LPI_STOP … #define INT_EP_EEE_RX_LPI … #define INT_EP_MAC_RESET_TIMEOUT … #define INT_EP_RDFO … #define INT_EP_TXE … #define INT_EP_USB_STATUS … #define INT_EP_TX_DIS … #define INT_EP_RX_DIS … #define INT_EP_PHY … #define INT_EP_DP … #define INT_EP_MAC_ERR … #define INT_EP_TDFU … #define INT_EP_TDFO … #define INT_EP_UTX … #define INT_EP_GPIO_11 … #define INT_EP_GPIO_10 … #define INT_EP_GPIO_9 … #define INT_EP_GPIO_8 … #define INT_EP_GPIO_7 … #define INT_EP_GPIO_6 … #define INT_EP_GPIO_5 … #define INT_EP_GPIO_4 … #define INT_EP_GPIO_3 … #define INT_EP_GPIO_2 … #define INT_EP_GPIO_1 … #define INT_EP_GPIO_0 … static const char lan78xx_gstrings[][ETH_GSTRING_LEN] = …; struct lan78xx_statstage { … }; struct lan78xx_statstage64 { … }; static u32 lan78xx_regs[] = …; #define PHY_REG_SIZE … struct lan78xx_net; struct lan78xx_priv { … }; enum skb_state { … }; struct skb_data { … }; #define EVENT_TX_HALT … #define EVENT_RX_HALT … #define EVENT_RX_MEMORY … #define EVENT_STS_SPLIT … #define EVENT_LINK_RESET … #define EVENT_RX_PAUSED … #define EVENT_DEV_WAKING … #define EVENT_DEV_ASLEEP … #define EVENT_DEV_OPEN … #define EVENT_STAT_UPDATE … #define EVENT_DEV_DISCONNECT … struct statstage { … }; struct irq_domain_data { … }; struct lan78xx_net { … }; /* define external phy id */ #define PHY_LAN8835 … #define PHY_KSZ9031RNX … /* use ethtool to change the level for any given device */ static int msg_level = …; module_param(msg_level, int, 0); MODULE_PARM_DESC(…) …; static struct sk_buff *lan78xx_get_buf(struct sk_buff_head *buf_pool) { … } static void lan78xx_release_buf(struct sk_buff_head *buf_pool, struct sk_buff *buf) { … } static void lan78xx_free_buf_pool(struct sk_buff_head *buf_pool) { … } static int lan78xx_alloc_buf_pool(struct sk_buff_head *buf_pool, size_t n_urbs, size_t urb_size, struct lan78xx_net *dev) { … } static struct sk_buff *lan78xx_get_rx_buf(struct lan78xx_net *dev) { … } static void lan78xx_release_rx_buf(struct lan78xx_net *dev, struct sk_buff *rx_buf) { … } static void lan78xx_free_rx_resources(struct lan78xx_net *dev) { … } static int lan78xx_alloc_rx_resources(struct lan78xx_net *dev) { … } static struct sk_buff *lan78xx_get_tx_buf(struct lan78xx_net *dev) { … } static void lan78xx_release_tx_buf(struct lan78xx_net *dev, struct sk_buff *tx_buf) { … } static void lan78xx_free_tx_resources(struct lan78xx_net *dev) { … } static int lan78xx_alloc_tx_resources(struct lan78xx_net *dev) { … } static int lan78xx_read_reg(struct lan78xx_net *dev, u32 index, u32 *data) { … } static int lan78xx_write_reg(struct lan78xx_net *dev, u32 index, u32 data) { … } static int lan78xx_update_reg(struct lan78xx_net *dev, u32 reg, u32 mask, u32 data) { … } static int lan78xx_read_stats(struct lan78xx_net *dev, struct lan78xx_statstage *data) { … } #define check_counter_rollover(struct1, dev_stats, member) … static void lan78xx_check_stat_rollover(struct lan78xx_net *dev, struct lan78xx_statstage *stats) { … } static void lan78xx_update_stats(struct lan78xx_net *dev) { … } /* Loop until the read is completed with timeout called with phy_mutex held */ static int lan78xx_phy_wait_not_busy(struct lan78xx_net *dev) { … } static inline u32 mii_access(int id, int index, int read) { … } static int lan78xx_wait_eeprom(struct lan78xx_net *dev) { … } static int lan78xx_eeprom_confirm_not_busy(struct lan78xx_net *dev) { … } static int lan78xx_read_raw_eeprom(struct lan78xx_net *dev, u32 offset, u32 length, u8 *data) { … } static int lan78xx_read_eeprom(struct lan78xx_net *dev, u32 offset, u32 length, u8 *data) { … } static int lan78xx_write_raw_eeprom(struct lan78xx_net *dev, u32 offset, u32 length, u8 *data) { … } static int lan78xx_read_raw_otp(struct lan78xx_net *dev, u32 offset, u32 length, u8 *data) { … } static int lan78xx_write_raw_otp(struct lan78xx_net *dev, u32 offset, u32 length, u8 *data) { … } static int lan78xx_read_otp(struct lan78xx_net *dev, u32 offset, u32 length, u8 *data) { … } static int lan78xx_dataport_wait_not_busy(struct lan78xx_net *dev) { … } static int lan78xx_dataport_write(struct lan78xx_net *dev, u32 ram_select, u32 addr, u32 length, u32 *buf) { … } static void lan78xx_set_addr_filter(struct lan78xx_priv *pdata, int index, u8 addr[ETH_ALEN]) { … } /* returns hash bit number for given MAC address */ static inline u32 lan78xx_hash(char addr[ETH_ALEN]) { … } static void lan78xx_deferred_multicast_write(struct work_struct *param) { … } static void lan78xx_set_multicast(struct net_device *netdev) { … } static int lan78xx_update_flowcontrol(struct lan78xx_net *dev, u8 duplex, u16 lcladv, u16 rmtadv) { … } static void lan78xx_rx_urb_submit_all(struct lan78xx_net *dev); static int lan78xx_mac_reset(struct lan78xx_net *dev) { … } static int lan78xx_link_reset(struct lan78xx_net *dev) { … } /* some work can't be done in tasklets, so we use keventd * * NOTE: annoying asymmetry: if it's active, schedule_work() fails, * but tasklet_schedule() doesn't. hope the failure is rare. */ static void lan78xx_defer_kevent(struct lan78xx_net *dev, int work) { … } static void lan78xx_status(struct lan78xx_net *dev, struct urb *urb) { … } static int lan78xx_ethtool_get_eeprom_len(struct net_device *netdev) { … } static int lan78xx_ethtool_get_eeprom(struct net_device *netdev, struct ethtool_eeprom *ee, u8 *data) { … } static int lan78xx_ethtool_set_eeprom(struct net_device *netdev, struct ethtool_eeprom *ee, u8 *data) { … } static void lan78xx_get_strings(struct net_device *netdev, u32 stringset, u8 *data) { … } static int lan78xx_get_sset_count(struct net_device *netdev, int sset) { … } static void lan78xx_get_stats(struct net_device *netdev, struct ethtool_stats *stats, u64 *data) { … } static void lan78xx_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol) { … } static int lan78xx_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol) { … } static int lan78xx_get_eee(struct net_device *net, struct ethtool_keee *edata) { … } static int lan78xx_set_eee(struct net_device *net, struct ethtool_keee *edata) { … } static u32 lan78xx_get_link(struct net_device *net) { … } static void lan78xx_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info) { … } static u32 lan78xx_get_msglevel(struct net_device *net) { … } static void lan78xx_set_msglevel(struct net_device *net, u32 level) { … } static int lan78xx_get_link_ksettings(struct net_device *net, struct ethtool_link_ksettings *cmd) { … } static int lan78xx_set_link_ksettings(struct net_device *net, const struct ethtool_link_ksettings *cmd) { … } static void lan78xx_get_pause(struct net_device *net, struct ethtool_pauseparam *pause) { … } static int lan78xx_set_pause(struct net_device *net, struct ethtool_pauseparam *pause) { … } static int lan78xx_get_regs_len(struct net_device *netdev) { … } static void lan78xx_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *buf) { … } static const struct ethtool_ops lan78xx_ethtool_ops = …; static void lan78xx_init_mac_address(struct lan78xx_net *dev) { … } /* MDIO read and write wrappers for phylib */ static int lan78xx_mdiobus_read(struct mii_bus *bus, int phy_id, int idx) { … } static int lan78xx_mdiobus_write(struct mii_bus *bus, int phy_id, int idx, u16 regval) { … } static int lan78xx_mdio_init(struct lan78xx_net *dev) { … } static void lan78xx_remove_mdio(struct lan78xx_net *dev) { … } static void lan78xx_link_status_change(struct net_device *net) { … } static int irq_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hwirq) { … } static void irq_unmap(struct irq_domain *d, unsigned int irq) { … } static const struct irq_domain_ops chip_domain_ops = …; static void lan78xx_irq_mask(struct irq_data *irqd) { … } static void lan78xx_irq_unmask(struct irq_data *irqd) { … } static void lan78xx_irq_bus_lock(struct irq_data *irqd) { … } static void lan78xx_irq_bus_sync_unlock(struct irq_data *irqd) { … } static struct irq_chip lan78xx_irqchip = …; static int lan78xx_setup_irq_domain(struct lan78xx_net *dev) { … } static void lan78xx_remove_irq_domain(struct lan78xx_net *dev) { … } static int lan8835_fixup(struct phy_device *phydev) { … } static int ksz9031rnx_fixup(struct phy_device *phydev) { … } static struct phy_device *lan7801_phy_init(struct lan78xx_net *dev) { … } static int lan78xx_phy_init(struct lan78xx_net *dev) { … } static int lan78xx_set_rx_max_frame_length(struct lan78xx_net *dev, int size) { … } static int unlink_urbs(struct lan78xx_net *dev, struct sk_buff_head *q) { … } static int lan78xx_change_mtu(struct net_device *netdev, int new_mtu) { … } static int lan78xx_set_mac_addr(struct net_device *netdev, void *p) { … } /* Enable or disable Rx checksum offload engine */ static int lan78xx_set_features(struct net_device *netdev, netdev_features_t features) { … } static void lan78xx_deferred_vlan_write(struct work_struct *param) { … } static int lan78xx_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid) { … } static int lan78xx_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid) { … } static void lan78xx_init_ltm(struct lan78xx_net *dev) { … } static int lan78xx_urb_config_init(struct lan78xx_net *dev) { … } static int lan78xx_start_hw(struct lan78xx_net *dev, u32 reg, u32 hw_enable) { … } static int lan78xx_stop_hw(struct lan78xx_net *dev, u32 reg, u32 hw_enabled, u32 hw_disabled) { … } static int lan78xx_flush_fifo(struct lan78xx_net *dev, u32 reg, u32 fifo_flush) { … } static int lan78xx_start_tx_path(struct lan78xx_net *dev) { … } static int lan78xx_stop_tx_path(struct lan78xx_net *dev) { … } /* The caller must ensure the Tx path is stopped before calling * lan78xx_flush_tx_fifo(). */ static int lan78xx_flush_tx_fifo(struct lan78xx_net *dev) { … } static int lan78xx_start_rx_path(struct lan78xx_net *dev) { … } static int lan78xx_stop_rx_path(struct lan78xx_net *dev) { … } /* The caller must ensure the Rx path is stopped before calling * lan78xx_flush_rx_fifo(). */ static int lan78xx_flush_rx_fifo(struct lan78xx_net *dev) { … } static int lan78xx_reset(struct lan78xx_net *dev) { … } static void lan78xx_init_stats(struct lan78xx_net *dev) { … } static int lan78xx_open(struct net_device *net) { … } static void lan78xx_terminate_urbs(struct lan78xx_net *dev) { … } static int lan78xx_stop(struct net_device *net) { … } static enum skb_state defer_bh(struct lan78xx_net *dev, struct sk_buff *skb, struct sk_buff_head *list, enum skb_state state) { … } static void tx_complete(struct urb *urb) { … } static void lan78xx_queue_skb(struct sk_buff_head *list, struct sk_buff *newsk, enum skb_state state) { … } static unsigned int lan78xx_tx_urb_space(struct lan78xx_net *dev) { … } static unsigned int lan78xx_tx_pend_data_len(struct lan78xx_net *dev) { … } static void lan78xx_tx_pend_skb_add(struct lan78xx_net *dev, struct sk_buff *skb, unsigned int *tx_pend_data_len) { … } static void lan78xx_tx_pend_skb_head_add(struct lan78xx_net *dev, struct sk_buff *skb, unsigned int *tx_pend_data_len) { … } static void lan78xx_tx_pend_skb_get(struct lan78xx_net *dev, struct sk_buff **skb, unsigned int *tx_pend_data_len) { … } static netdev_tx_t lan78xx_start_xmit(struct sk_buff *skb, struct net_device *net) { … } static int lan78xx_bind(struct lan78xx_net *dev, struct usb_interface *intf) { … } static void lan78xx_unbind(struct lan78xx_net *dev, struct usb_interface *intf) { … } static void lan78xx_rx_csum_offload(struct lan78xx_net *dev, struct sk_buff *skb, u32 rx_cmd_a, u32 rx_cmd_b) { … } static void lan78xx_rx_vlan_offload(struct lan78xx_net *dev, struct sk_buff *skb, u32 rx_cmd_a, u32 rx_cmd_b) { … } static void lan78xx_skb_return(struct lan78xx_net *dev, struct sk_buff *skb) { … } static int lan78xx_rx(struct lan78xx_net *dev, struct sk_buff *skb, int budget, int *work_done) { … } static inline void rx_process(struct lan78xx_net *dev, struct sk_buff *skb, int budget, int *work_done) { … } static void rx_complete(struct urb *urb) { … } static int rx_submit(struct lan78xx_net *dev, struct sk_buff *skb, gfp_t flags) { … } static void lan78xx_rx_urb_submit_all(struct lan78xx_net *dev) { … } static void lan78xx_rx_urb_resubmit(struct lan78xx_net *dev, struct sk_buff *rx_buf) { … } static void lan78xx_fill_tx_cmd_words(struct sk_buff *skb, u8 *buffer) { … } static struct skb_data *lan78xx_tx_buf_fill(struct lan78xx_net *dev, struct sk_buff *tx_buf) { … } static void lan78xx_tx_bh(struct lan78xx_net *dev) { … } static int lan78xx_bh(struct lan78xx_net *dev, int budget) { … } static int lan78xx_poll(struct napi_struct *napi, int budget) { … } static void lan78xx_delayedwork(struct work_struct *work) { … } static void intr_complete(struct urb *urb) { … } static void lan78xx_disconnect(struct usb_interface *intf) { … } static void lan78xx_tx_timeout(struct net_device *net, unsigned int txqueue) { … } static netdev_features_t lan78xx_features_check(struct sk_buff *skb, struct net_device *netdev, netdev_features_t features) { … } static const struct net_device_ops lan78xx_netdev_ops = …; static void lan78xx_stat_monitor(struct timer_list *t) { … } static int lan78xx_probe(struct usb_interface *intf, const struct usb_device_id *id) { … } static u16 lan78xx_wakeframe_crc16(const u8 *buf, int len) { … } static int lan78xx_set_auto_suspend(struct lan78xx_net *dev) { … } static int lan78xx_set_suspend(struct lan78xx_net *dev, u32 wol) { … } static int lan78xx_suspend(struct usb_interface *intf, pm_message_t message) { … } static bool lan78xx_submit_deferred_urbs(struct lan78xx_net *dev) { … } static int lan78xx_resume(struct usb_interface *intf) { … } static int lan78xx_reset_resume(struct usb_interface *intf) { … } static const struct usb_device_id products[] = …; MODULE_DEVICE_TABLE(usb, products); static struct usb_driver lan78xx_driver = …; module_usb_driver(…) …; MODULE_AUTHOR(…); MODULE_DESCRIPTION(…); MODULE_LICENSE(…) …;
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