// SPDX-License-Identifier: GPL-2.0-or-later /* * Ethernet driver for the WIZnet W5300 chip. * * Copyright (C) 2008-2009 WIZnet Co.,Ltd. * Copyright (C) 2011 Taehun Kim <kth3321 <at> gmail.com> * Copyright (C) 2012 Mike Sinkovsky <[email protected]> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/platform_device.h> #include <linux/platform_data/wiznet.h> #include <linux/ethtool.h> #include <linux/skbuff.h> #include <linux/types.h> #include <linux/errno.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/io.h> #include <linux/ioport.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/gpio.h> #define DRV_NAME … #define DRV_VERSION … MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_ALIAS(…) …; MODULE_LICENSE(…) …; /* * Registers */ #define W5300_MR … #define MR_DBW … #define MR_MPF … #define MR_WDF(n) … #define MR_RDH … #define MR_FS … #define MR_RST … #define MR_PB … #define MR_DBS … #define MR_IND … #define W5300_IR … #define W5300_IMR … #define IR_S0 … #define W5300_SHARL … #define W5300_SHARH … #define W5300_TMSRL … #define W5300_TMSRH … #define W5300_RMSRL … #define W5300_RMSRH … #define W5300_MTYPE … #define W5300_IDR … #define IDR_W5300 … #define W5300_S0_MR … #define S0_MR_CLOSED … #define S0_MR_MACRAW … #define S0_MR_MACRAW_MF … #define W5300_S0_CR … #define S0_CR_OPEN … #define S0_CR_CLOSE … #define S0_CR_SEND … #define S0_CR_RECV … #define W5300_S0_IMR … #define W5300_S0_IR … #define S0_IR_RECV … #define S0_IR_SENDOK … #define W5300_S0_SSR … #define W5300_S0_TX_WRSR … #define W5300_S0_TX_FSR … #define W5300_S0_RX_RSR … #define W5300_S0_TX_FIFO … #define W5300_S0_RX_FIFO … #define W5300_REGS_LEN … /* * Device driver private data structure */ struct w5300_priv { … }; /************************************************************************ * * Lowlevel I/O functions * ***********************************************************************/ /* * In direct address mode host system can directly access W5300 registers * after mapping to Memory-Mapped I/O space. * * 0x400 bytes are required for memory space. */ static inline u16 w5300_read_direct(struct w5300_priv *priv, u16 addr) { … } static inline void w5300_write_direct(struct w5300_priv *priv, u16 addr, u16 data) { … } /* * In indirect address mode host system indirectly accesses registers by * using Indirect Mode Address Register (IDM_AR) and Indirect Mode Data * Register (IDM_DR), which are directly mapped to Memory-Mapped I/O space. * Mode Register (MR) is directly accessible. * * Only 0x06 bytes are required for memory space. */ #define W5300_IDM_AR … #define W5300_IDM_DR … static u16 w5300_read_indirect(struct w5300_priv *priv, u16 addr) { … } static void w5300_write_indirect(struct w5300_priv *priv, u16 addr, u16 data) { … } #if defined(CONFIG_WIZNET_BUS_DIRECT) #define w5300_read … #define w5300_write … #elif defined(CONFIG_WIZNET_BUS_INDIRECT) #define w5300_read … #define w5300_write … #else /* CONFIG_WIZNET_BUS_ANY */ #define w5300_read … #define w5300_write … #endif static u32 w5300_read32(struct w5300_priv *priv, u16 addr) { … } static void w5300_write32(struct w5300_priv *priv, u16 addr, u32 data) { … } static int w5300_command(struct w5300_priv *priv, u16 cmd) { … } static void w5300_read_frame(struct w5300_priv *priv, u8 *buf, int len) { … } static void w5300_write_frame(struct w5300_priv *priv, u8 *buf, int len) { … } static void w5300_write_macaddr(struct w5300_priv *priv) { … } static void w5300_hw_reset(struct w5300_priv *priv) { … } static void w5300_hw_start(struct w5300_priv *priv) { … } static void w5300_hw_close(struct w5300_priv *priv) { … } /*********************************************************************** * * Device driver functions / callbacks * ***********************************************************************/ static void w5300_get_drvinfo(struct net_device *ndev, struct ethtool_drvinfo *info) { … } static u32 w5300_get_link(struct net_device *ndev) { … } static u32 w5300_get_msglevel(struct net_device *ndev) { … } static void w5300_set_msglevel(struct net_device *ndev, u32 value) { … } static int w5300_get_regs_len(struct net_device *ndev) { … } static void w5300_get_regs(struct net_device *ndev, struct ethtool_regs *regs, void *_buf) { … } static void w5300_tx_timeout(struct net_device *ndev, unsigned int txqueue) { … } static netdev_tx_t w5300_start_tx(struct sk_buff *skb, struct net_device *ndev) { … } static int w5300_napi_poll(struct napi_struct *napi, int budget) { … } static irqreturn_t w5300_interrupt(int irq, void *ndev_instance) { … } static irqreturn_t w5300_detect_link(int irq, void *ndev_instance) { … } static void w5300_set_rx_mode(struct net_device *ndev) { … } static int w5300_set_macaddr(struct net_device *ndev, void *addr) { … } static int w5300_open(struct net_device *ndev) { … } static int w5300_stop(struct net_device *ndev) { … } static const struct ethtool_ops w5300_ethtool_ops = …; static const struct net_device_ops w5300_netdev_ops = …; static int w5300_hw_probe(struct platform_device *pdev) { … } static int w5300_probe(struct platform_device *pdev) { … } static void w5300_remove(struct platform_device *pdev) { … } #ifdef CONFIG_PM_SLEEP static int w5300_suspend(struct device *dev) { … } static int w5300_resume(struct device *dev) { … } #endif /* CONFIG_PM_SLEEP */ static SIMPLE_DEV_PM_OPS(w5300_pm_ops, w5300_suspend, w5300_resume); static struct platform_driver w5300_driver = …; module_platform_driver(…) …;
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