// SPDX-License-Identifier: GPL-2.0-or-later /* * Ethernet driver for the WIZnet W5100 chip. * * Copyright (C) 2006-2008 WIZnet Co.,Ltd. * 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> #include "w5100.h" #define DRV_NAME … #define DRV_VERSION … MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_ALIAS(…) …; MODULE_LICENSE(…) …; /* * W5100/W5200/W5500 common registers */ #define W5100_COMMON_REGS … #define W5100_MR … #define MR_RST … #define MR_PB … #define MR_AI … #define MR_IND … #define W5100_SHAR … #define W5100_IR … #define W5100_COMMON_REGS_LEN … #define W5100_Sn_MR … #define W5100_Sn_CR … #define W5100_Sn_IR … #define W5100_Sn_SR … #define W5100_Sn_TX_FSR … #define W5100_Sn_TX_RD … #define W5100_Sn_TX_WR … #define W5100_Sn_RX_RSR … #define W5100_Sn_RX_RD … #define S0_REGS(priv) … #define W5100_S0_MR(priv) … #define S0_MR_MACRAW … #define S0_MR_MF … #define W5500_S0_MR_MF … #define W5100_S0_CR(priv) … #define S0_CR_OPEN … #define S0_CR_CLOSE … #define S0_CR_SEND … #define S0_CR_RECV … #define W5100_S0_IR(priv) … #define S0_IR_SENDOK … #define S0_IR_RECV … #define W5100_S0_SR(priv) … #define S0_SR_MACRAW … #define W5100_S0_TX_FSR(priv) … #define W5100_S0_TX_RD(priv) … #define W5100_S0_TX_WR(priv) … #define W5100_S0_RX_RSR(priv) … #define W5100_S0_RX_RD(priv) … #define W5100_S0_REGS_LEN … /* * W5100 and W5200 common registers */ #define W5100_IMR … #define IR_S0 … #define W5100_RTR … #define RTR_DEFAULT … /* * W5100 specific register and memory */ #define W5100_RMSR … #define W5100_TMSR … #define W5100_S0_REGS … #define W5100_TX_MEM_START … #define W5100_TX_MEM_SIZE … #define W5100_RX_MEM_START … #define W5100_RX_MEM_SIZE … /* * W5200 specific register and memory */ #define W5200_S0_REGS … #define W5200_Sn_RXMEM_SIZE(n) … #define W5200_Sn_TXMEM_SIZE(n) … #define W5200_TX_MEM_START … #define W5200_TX_MEM_SIZE … #define W5200_RX_MEM_START … #define W5200_RX_MEM_SIZE … /* * W5500 specific register and memory * * W5500 register and memory are organized by multiple blocks. Each one is * selected by 16bits offset address and 5bits block select bits. So we * encode it into 32bits address. (lower 16bits is offset address and * upper 16bits is block select bits) */ #define W5500_SIMR … #define W5500_RTR … #define W5500_S0_REGS … #define W5500_Sn_RXMEM_SIZE(n) … #define W5500_Sn_TXMEM_SIZE(n) … #define W5500_TX_MEM_START … #define W5500_TX_MEM_SIZE … #define W5500_RX_MEM_START … #define W5500_RX_MEM_SIZE … /* * Device driver private data structure */ struct w5100_priv { … }; /************************************************************************ * * Lowlevel I/O functions * ***********************************************************************/ struct w5100_mmio_priv { … }; static inline struct w5100_mmio_priv *w5100_mmio_priv(struct net_device *dev) { … } static inline void __iomem *w5100_mmio(struct net_device *ndev) { … } /* * In direct address mode host system can directly access W5100 registers * after mapping to Memory-Mapped I/O space. * * 0x8000 bytes are required for memory space. */ static inline int w5100_read_direct(struct net_device *ndev, u32 addr) { … } static inline int __w5100_write_direct(struct net_device *ndev, u32 addr, u8 data) { … } static inline int w5100_write_direct(struct net_device *ndev, u32 addr, u8 data) { … } static int w5100_read16_direct(struct net_device *ndev, u32 addr) { … } static int w5100_write16_direct(struct net_device *ndev, u32 addr, u16 data) { … } static int w5100_readbulk_direct(struct net_device *ndev, u32 addr, u8 *buf, int len) { … } static int w5100_writebulk_direct(struct net_device *ndev, u32 addr, const u8 *buf, int len) { … } static int w5100_mmio_init(struct net_device *ndev) { … } static const struct w5100_ops w5100_mmio_direct_ops = …; /* * 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 0x04 bytes are required for memory space. */ #define W5100_IDM_AR … #define W5100_IDM_DR … static int w5100_read_indirect(struct net_device *ndev, u32 addr) { … } static int w5100_write_indirect(struct net_device *ndev, u32 addr, u8 data) { … } static int w5100_read16_indirect(struct net_device *ndev, u32 addr) { … } static int w5100_write16_indirect(struct net_device *ndev, u32 addr, u16 data) { … } static int w5100_readbulk_indirect(struct net_device *ndev, u32 addr, u8 *buf, int len) { … } static int w5100_writebulk_indirect(struct net_device *ndev, u32 addr, const u8 *buf, int len) { … } static int w5100_reset_indirect(struct net_device *ndev) { … } static const struct w5100_ops w5100_mmio_indirect_ops = …; #if defined(CONFIG_WIZNET_BUS_DIRECT) static int w5100_read(struct w5100_priv *priv, u32 addr) { return w5100_read_direct(priv->ndev, addr); } static int w5100_write(struct w5100_priv *priv, u32 addr, u8 data) { return w5100_write_direct(priv->ndev, addr, data); } static int w5100_read16(struct w5100_priv *priv, u32 addr) { return w5100_read16_direct(priv->ndev, addr); } static int w5100_write16(struct w5100_priv *priv, u32 addr, u16 data) { return w5100_write16_direct(priv->ndev, addr, data); } static int w5100_readbulk(struct w5100_priv *priv, u32 addr, u8 *buf, int len) { return w5100_readbulk_direct(priv->ndev, addr, buf, len); } static int w5100_writebulk(struct w5100_priv *priv, u32 addr, const u8 *buf, int len) { return w5100_writebulk_direct(priv->ndev, addr, buf, len); } #elif defined(CONFIG_WIZNET_BUS_INDIRECT) static int w5100_read(struct w5100_priv *priv, u32 addr) { return w5100_read_indirect(priv->ndev, addr); } static int w5100_write(struct w5100_priv *priv, u32 addr, u8 data) { return w5100_write_indirect(priv->ndev, addr, data); } static int w5100_read16(struct w5100_priv *priv, u32 addr) { return w5100_read16_indirect(priv->ndev, addr); } static int w5100_write16(struct w5100_priv *priv, u32 addr, u16 data) { return w5100_write16_indirect(priv->ndev, addr, data); } static int w5100_readbulk(struct w5100_priv *priv, u32 addr, u8 *buf, int len) { return w5100_readbulk_indirect(priv->ndev, addr, buf, len); } static int w5100_writebulk(struct w5100_priv *priv, u32 addr, const u8 *buf, int len) { return w5100_writebulk_indirect(priv->ndev, addr, buf, len); } #else /* CONFIG_WIZNET_BUS_ANY */ static int w5100_read(struct w5100_priv *priv, u32 addr) { … } static int w5100_write(struct w5100_priv *priv, u32 addr, u8 data) { … } static int w5100_read16(struct w5100_priv *priv, u32 addr) { … } static int w5100_write16(struct w5100_priv *priv, u32 addr, u16 data) { … } static int w5100_readbulk(struct w5100_priv *priv, u32 addr, u8 *buf, int len) { … } static int w5100_writebulk(struct w5100_priv *priv, u32 addr, const u8 *buf, int len) { … } #endif static int w5100_readbuf(struct w5100_priv *priv, u16 offset, u8 *buf, int len) { … } static int w5100_writebuf(struct w5100_priv *priv, u16 offset, const u8 *buf, int len) { … } static int w5100_reset(struct w5100_priv *priv) { … } static int w5100_command(struct w5100_priv *priv, u16 cmd) { … } static void w5100_write_macaddr(struct w5100_priv *priv) { … } static void w5100_socket_intr_mask(struct w5100_priv *priv, u8 mask) { … } static void w5100_enable_intr(struct w5100_priv *priv) { … } static void w5100_disable_intr(struct w5100_priv *priv) { … } static void w5100_memory_configure(struct w5100_priv *priv) { … } static void w5200_memory_configure(struct w5100_priv *priv) { … } static void w5500_memory_configure(struct w5100_priv *priv) { … } static int w5100_hw_reset(struct w5100_priv *priv) { … } static void w5100_hw_start(struct w5100_priv *priv) { … } static void w5100_hw_close(struct w5100_priv *priv) { … } /*********************************************************************** * * Device driver functions / callbacks * ***********************************************************************/ static void w5100_get_drvinfo(struct net_device *ndev, struct ethtool_drvinfo *info) { … } static u32 w5100_get_link(struct net_device *ndev) { … } static u32 w5100_get_msglevel(struct net_device *ndev) { … } static void w5100_set_msglevel(struct net_device *ndev, u32 value) { … } static int w5100_get_regs_len(struct net_device *ndev) { … } static void w5100_get_regs(struct net_device *ndev, struct ethtool_regs *regs, void *buf) { … } static void w5100_restart(struct net_device *ndev) { … } static void w5100_restart_work(struct work_struct *work) { … } static void w5100_tx_timeout(struct net_device *ndev, unsigned int txqueue) { … } static void w5100_tx_skb(struct net_device *ndev, struct sk_buff *skb) { … } static void w5100_tx_work(struct work_struct *work) { … } static netdev_tx_t w5100_start_tx(struct sk_buff *skb, struct net_device *ndev) { … } static struct sk_buff *w5100_rx_skb(struct net_device *ndev) { … } static void w5100_rx_work(struct work_struct *work) { … } static int w5100_napi_poll(struct napi_struct *napi, int budget) { … } static irqreturn_t w5100_interrupt(int irq, void *ndev_instance) { … } static irqreturn_t w5100_detect_link(int irq, void *ndev_instance) { … } static void w5100_setrx_work(struct work_struct *work) { … } static void w5100_set_rx_mode(struct net_device *ndev) { … } static int w5100_set_macaddr(struct net_device *ndev, void *addr) { … } static int w5100_open(struct net_device *ndev) { … } static int w5100_stop(struct net_device *ndev) { … } static const struct ethtool_ops w5100_ethtool_ops = …; static const struct net_device_ops w5100_netdev_ops = …; static int w5100_mmio_probe(struct platform_device *pdev) { … } static void w5100_mmio_remove(struct platform_device *pdev) { … } void *w5100_ops_priv(const struct net_device *ndev) { … } EXPORT_SYMBOL_GPL(…); int w5100_probe(struct device *dev, const struct w5100_ops *ops, int sizeof_ops_priv, const void *mac_addr, int irq, int link_gpio) { … } EXPORT_SYMBOL_GPL(…); void w5100_remove(struct device *dev) { … } EXPORT_SYMBOL_GPL(…); #ifdef CONFIG_PM_SLEEP static int w5100_suspend(struct device *dev) { … } static int w5100_resume(struct device *dev) { … } #endif /* CONFIG_PM_SLEEP */ SIMPLE_DEV_PM_OPS(w5100_pm_ops, w5100_suspend, w5100_resume); EXPORT_SYMBOL_GPL(…); static struct platform_driver w5100_mmio_driver = …; module_platform_driver(…) …;
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