// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/net/ethernet/ethoc.c * * Copyright (C) 2007-2008 Avionic Design Development GmbH * Copyright (C) 2008-2009 Avionic Design GmbH * * Written by Thierry Reding <[email protected]> */ #include <linux/dma-mapping.h> #include <linux/etherdevice.h> #include <linux/clk.h> #include <linux/crc32.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/mii.h> #include <linux/phy.h> #include <linux/platform_device.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/of.h> #include <linux/of_net.h> #include <linux/module.h> #include <net/ethoc.h> static int buffer_size = …; /* 32 KBytes */ module_param(buffer_size, int, 0); MODULE_PARM_DESC(…) …; /* register offsets */ #define MODER … #define INT_SOURCE … #define INT_MASK … #define IPGT … #define IPGR1 … #define IPGR2 … #define PACKETLEN … #define COLLCONF … #define TX_BD_NUM … #define CTRLMODER … #define MIIMODER … #define MIICOMMAND … #define MIIADDRESS … #define MIITX_DATA … #define MIIRX_DATA … #define MIISTATUS … #define MAC_ADDR0 … #define MAC_ADDR1 … #define ETH_HASH0 … #define ETH_HASH1 … #define ETH_TXCTRL … #define ETH_END … /* mode register */ #define MODER_RXEN … #define MODER_TXEN … #define MODER_NOPRE … #define MODER_BRO … #define MODER_IAM … #define MODER_PRO … #define MODER_IFG … #define MODER_LOOP … #define MODER_NBO … #define MODER_EDE … #define MODER_FULLD … #define MODER_RESET … #define MODER_DCRC … #define MODER_CRC … #define MODER_HUGE … #define MODER_PAD … #define MODER_RSM … /* interrupt source and mask registers */ #define INT_MASK_TXF … #define INT_MASK_TXE … #define INT_MASK_RXF … #define INT_MASK_RXE … #define INT_MASK_BUSY … #define INT_MASK_TXC … #define INT_MASK_RXC … #define INT_MASK_TX … #define INT_MASK_RX … #define INT_MASK_ALL … /* packet length register */ #define PACKETLEN_MIN(min) … #define PACKETLEN_MAX(max) … #define PACKETLEN_MIN_MAX(min, max) … /* transmit buffer number register */ #define TX_BD_NUM_VAL(x) … /* control module mode register */ #define CTRLMODER_PASSALL … #define CTRLMODER_RXFLOW … #define CTRLMODER_TXFLOW … /* MII mode register */ #define MIIMODER_CLKDIV(x) … #define MIIMODER_NOPRE … /* MII command register */ #define MIICOMMAND_SCAN … #define MIICOMMAND_READ … #define MIICOMMAND_WRITE … /* MII address register */ #define MIIADDRESS_FIAD(x) … #define MIIADDRESS_RGAD(x) … #define MIIADDRESS_ADDR(phy, reg) … /* MII transmit data register */ #define MIITX_DATA_VAL(x) … /* MII receive data register */ #define MIIRX_DATA_VAL(x) … /* MII status register */ #define MIISTATUS_LINKFAIL … #define MIISTATUS_BUSY … #define MIISTATUS_INVALID … /* TX buffer descriptor */ #define TX_BD_CS … #define TX_BD_DF … #define TX_BD_LC … #define TX_BD_RL … #define TX_BD_RETRY_MASK … #define TX_BD_RETRY(x) … #define TX_BD_UR … #define TX_BD_CRC … #define TX_BD_PAD … #define TX_BD_WRAP … #define TX_BD_IRQ … #define TX_BD_READY … #define TX_BD_LEN(x) … #define TX_BD_LEN_MASK … #define TX_BD_STATS … /* RX buffer descriptor */ #define RX_BD_LC … #define RX_BD_CRC … #define RX_BD_SF … #define RX_BD_TL … #define RX_BD_DN … #define RX_BD_IS … #define RX_BD_OR … #define RX_BD_MISS … #define RX_BD_CF … #define RX_BD_WRAP … #define RX_BD_IRQ … #define RX_BD_EMPTY … #define RX_BD_LEN(x) … #define RX_BD_STATS … #define ETHOC_BUFSIZ … #define ETHOC_ZLEN … #define ETHOC_BD_BASE … #define ETHOC_TIMEOUT … #define ETHOC_MII_TIMEOUT … /** * struct ethoc - driver-private device structure * @iobase: pointer to I/O memory region * @membase: pointer to buffer memory region * @big_endian: just big or little (endian) * @num_bd: number of buffer descriptors * @num_tx: number of send buffers * @cur_tx: last send buffer written * @dty_tx: last buffer actually sent * @num_rx: number of receive buffers * @cur_rx: current receive buffer * @vma: pointer to array of virtual memory addresses for buffers * @netdev: pointer to network device structure * @napi: NAPI structure * @msg_enable: device state flags * @lock: device lock * @mdio: MDIO bus for PHY access * @clk: clock * @phy_id: address of attached PHY * @old_link: previous link info * @old_duplex: previous duplex info */ struct ethoc { … }; /** * struct ethoc_bd - buffer descriptor * @stat: buffer statistics * @addr: physical memory address */ struct ethoc_bd { … }; static inline u32 ethoc_read(struct ethoc *dev, loff_t offset) { … } static inline void ethoc_write(struct ethoc *dev, loff_t offset, u32 data) { … } static inline void ethoc_read_bd(struct ethoc *dev, int index, struct ethoc_bd *bd) { … } static inline void ethoc_write_bd(struct ethoc *dev, int index, const struct ethoc_bd *bd) { … } static inline void ethoc_enable_irq(struct ethoc *dev, u32 mask) { … } static inline void ethoc_disable_irq(struct ethoc *dev, u32 mask) { … } static inline void ethoc_ack_irq(struct ethoc *dev, u32 mask) { … } static inline void ethoc_enable_rx_and_tx(struct ethoc *dev) { … } static inline void ethoc_disable_rx_and_tx(struct ethoc *dev) { … } static int ethoc_init_ring(struct ethoc *dev, unsigned long mem_start) { … } static int ethoc_reset(struct ethoc *dev) { … } static unsigned int ethoc_update_rx_stats(struct ethoc *dev, struct ethoc_bd *bd) { … } static int ethoc_rx(struct net_device *dev, int limit) { … } static void ethoc_update_tx_stats(struct ethoc *dev, struct ethoc_bd *bd) { … } static int ethoc_tx(struct net_device *dev, int limit) { … } static irqreturn_t ethoc_interrupt(int irq, void *dev_id) { … } static int ethoc_get_mac_address(struct net_device *dev, void *addr) { … } static int ethoc_poll(struct napi_struct *napi, int budget) { … } static int ethoc_mdio_read(struct mii_bus *bus, int phy, int reg) { … } static int ethoc_mdio_write(struct mii_bus *bus, int phy, int reg, u16 val) { … } static void ethoc_mdio_poll(struct net_device *dev) { … } static int ethoc_mdio_probe(struct net_device *dev) { … } static int ethoc_open(struct net_device *dev) { … } static int ethoc_stop(struct net_device *dev) { … } static int ethoc_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { … } static void ethoc_do_set_mac_address(struct net_device *dev) { … } static int ethoc_set_mac_address(struct net_device *dev, void *p) { … } static void ethoc_set_multicast_list(struct net_device *dev) { … } static int ethoc_change_mtu(struct net_device *dev, int new_mtu) { … } static void ethoc_tx_timeout(struct net_device *dev, unsigned int txqueue) { … } static netdev_tx_t ethoc_start_xmit(struct sk_buff *skb, struct net_device *dev) { … } static int ethoc_get_regs_len(struct net_device *netdev) { … } static void ethoc_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p) { … } static void ethoc_get_ringparam(struct net_device *dev, struct ethtool_ringparam *ring, struct kernel_ethtool_ringparam *kernel_ring, struct netlink_ext_ack *extack) { … } static int ethoc_set_ringparam(struct net_device *dev, struct ethtool_ringparam *ring, struct kernel_ethtool_ringparam *kernel_ring, struct netlink_ext_ack *extack) { … } static const struct ethtool_ops ethoc_ethtool_ops = …; static const struct net_device_ops ethoc_netdev_ops = …; /** * ethoc_probe - initialize OpenCores ethernet MAC * @pdev: platform device */ static int ethoc_probe(struct platform_device *pdev) { … } /** * ethoc_remove - shutdown OpenCores ethernet MAC * @pdev: platform device */ static void ethoc_remove(struct platform_device *pdev) { … } #ifdef CONFIG_PM static int ethoc_suspend(struct platform_device *pdev, pm_message_t state) { … } static int ethoc_resume(struct platform_device *pdev) { … } #else #define ethoc_suspend … #define ethoc_resume … #endif static const struct of_device_id ethoc_match[] = …; MODULE_DEVICE_TABLE(of, ethoc_match); static struct platform_driver ethoc_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux