Ethernet driver for the WIZnet W5300 chip
Based on original driver from chip manufacturer, but nearly full rewite. Tested and used in production with Blackfin BF531 embedded processor. Signed-off-by: Mike Sinkovsky <msink@permonline.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mike Sinkovsky
David S. Miller
parent
044a38134a
commit
9899b81e7c
@ -174,6 +174,7 @@ source "drivers/net/ethernet/tile/Kconfig"
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source "drivers/net/ethernet/toshiba/Kconfig"
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source "drivers/net/ethernet/tundra/Kconfig"
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source "drivers/net/ethernet/via/Kconfig"
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source "drivers/net/ethernet/wiznet/Kconfig"
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source "drivers/net/ethernet/xilinx/Kconfig"
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source "drivers/net/ethernet/xircom/Kconfig"
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@ -73,5 +73,6 @@ obj-$(CONFIG_TILE_NET) += tile/
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obj-$(CONFIG_NET_VENDOR_TOSHIBA) += toshiba/
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obj-$(CONFIG_NET_VENDOR_TUNDRA) += tundra/
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obj-$(CONFIG_NET_VENDOR_VIA) += via/
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obj-$(CONFIG_NET_VENDOR_WIZNET) += wiznet/
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obj-$(CONFIG_NET_VENDOR_XILINX) += xilinx/
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obj-$(CONFIG_NET_VENDOR_XIRCOM) += xircom/
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65
drivers/net/ethernet/wiznet/Kconfig
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65
drivers/net/ethernet/wiznet/Kconfig
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@ -0,0 +1,65 @@
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#
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# WIZnet devices configuration
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#
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config NET_VENDOR_WIZNET
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bool "WIZnet devices"
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default y
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---help---
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If you have a network (Ethernet) card belonging to this class, say Y
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and read the Ethernet-HOWTO, available from
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<http://www.tldp.org/docs.html#howto>.
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Note that the answer to this question doesn't directly affect the
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kernel: saying N will just cause the configurator to skip all
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the questions about WIZnet devices. If you say Y, you will be asked
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for your specific card in the following questions.
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if NET_VENDOR_WIZNET
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config WIZNET_W5300
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tristate "WIZnet W5300 Ethernet support"
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---help---
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Support for WIZnet W5300 chips.
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W5300 is a single chip with integrated 10/100 Ethernet MAC,
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PHY and hardware TCP/IP stack, but this driver is limited to
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the MAC and PHY functions only, onchip TCP/IP is unused.
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To compile this driver as a module, choose M here: the module
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will be called w5300.
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choice
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prompt "WIZnet interface mode"
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default WIZNET_BUS_ANY
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config WIZNET_BUS_DIRECT
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bool "Direct address bus mode"
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---help---
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In direct address mode host system can directly access all registers
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after mapping to Memory-Mapped I/O space.
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config WIZNET_BUS_INDIRECT
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bool "Indirect address bus mode"
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---help---
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In indirect address mode host system indirectly accesses registers
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using Indirect Mode Address Register and Indirect Mode Data Register,
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which are directly mapped to Memory-Mapped I/O space.
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config WIZNET_BUS_ANY
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bool "Select interface mode in runtime"
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---help---
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If interface mode is unknown in compile time, it can be selected
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in runtime from board/platform resources configuration.
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Performance may decrease compared to explicitly selected bus mode.
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endchoice
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config WIZNET_TX_FLOW
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bool "Use transmit flow control"
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default y
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help
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This enables transmit flow control for WIZnet chips.
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If unsure, say Y.
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endif # NET_VENDOR_WIZNET
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1
drivers/net/ethernet/wiznet/Makefile
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1
drivers/net/ethernet/wiznet/Makefile
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@ -0,0 +1 @@
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obj-$(CONFIG_WIZNET_W5300) += w5300.o
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722
drivers/net/ethernet/wiznet/w5300.c
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722
drivers/net/ethernet/wiznet/w5300.c
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@ -0,0 +1,722 @@
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/*
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* Ethernet driver for the WIZnet W5300 chip.
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*
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* Copyright (C) 2008-2009 WIZnet Co.,Ltd.
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* Copyright (C) 2011 Taehun Kim <kth3321 <at> gmail.com>
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* Copyright (C) 2012 Mike Sinkovsky <msink@permonline.ru>
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*
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* Licensed under the GPL-2 or later.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/kconfig.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/platform_device.h>
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#include <linux/platform_data/wiznet.h>
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#include <linux/ethtool.h>
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#include <linux/skbuff.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/io.h>
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#include <linux/ioport.h>
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#include <linux/interrupt.h>
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#include <linux/gpio.h>
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#define DRV_NAME "w5300"
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#define DRV_VERSION "2012-04-04"
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MODULE_DESCRIPTION("WIZnet W5300 Ethernet driver v"DRV_VERSION);
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MODULE_AUTHOR("Mike Sinkovsky <msink@permonline.ru>");
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MODULE_ALIAS("platform:"DRV_NAME);
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MODULE_LICENSE("GPL");
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/*
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* Registers
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*/
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#define W5300_MR 0x0000 /* Mode Register */
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#define MR_DBW (1 << 15) /* Data bus width */
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#define MR_MPF (1 << 14) /* Mac layer pause frame */
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#define MR_WDF(n) (((n)&7)<<11) /* Write data fetch time */
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#define MR_RDH (1 << 10) /* Read data hold time */
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#define MR_FS (1 << 8) /* FIFO swap */
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#define MR_RST (1 << 7) /* S/W reset */
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#define MR_PB (1 << 4) /* Ping block */
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#define MR_DBS (1 << 2) /* Data bus swap */
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#define MR_IND (1 << 0) /* Indirect mode */
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#define W5300_IR 0x0002 /* Interrupt Register */
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#define W5300_IMR 0x0004 /* Interrupt Mask Register */
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#define IR_S0 0x0001 /* S0 interrupt */
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#define W5300_SHARL 0x0008 /* Source MAC address (0123) */
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#define W5300_SHARH 0x000c /* Source MAC address (45) */
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#define W5300_TMSRL 0x0020 /* Transmit Memory Size (0123) */
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#define W5300_TMSRH 0x0024 /* Transmit Memory Size (4567) */
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#define W5300_RMSRL 0x0028 /* Receive Memory Size (0123) */
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#define W5300_RMSRH 0x002c /* Receive Memory Size (4567) */
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#define W5300_MTYPE 0x0030 /* Memory Type */
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#define W5300_IDR 0x00fe /* Chip ID register */
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#define IDR_W5300 0x5300 /* =0x5300 for WIZnet W5300 */
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#define W5300_S0_MR 0x0200 /* S0 Mode Register */
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#define S0_MR_CLOSED 0x0000 /* Close mode */
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#define S0_MR_MACRAW 0x0004 /* MAC RAW mode (promiscous) */
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#define S0_MR_MACRAW_MF 0x0044 /* MAC RAW mode (filtered) */
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#define W5300_S0_CR 0x0202 /* S0 Command Register */
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#define S0_CR_OPEN 0x0001 /* OPEN command */
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#define S0_CR_CLOSE 0x0010 /* CLOSE command */
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#define S0_CR_SEND 0x0020 /* SEND command */
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#define S0_CR_RECV 0x0040 /* RECV command */
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#define W5300_S0_IMR 0x0204 /* S0 Interrupt Mask Register */
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#define W5300_S0_IR 0x0206 /* S0 Interrupt Register */
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#define S0_IR_RECV 0x0004 /* Receive interrupt */
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#define S0_IR_SENDOK 0x0010 /* Send OK interrupt */
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#define W5300_S0_SSR 0x0208 /* S0 Socket Status Register */
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#define W5300_S0_TX_WRSR 0x0220 /* S0 TX Write Size Register */
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#define W5300_S0_TX_FSR 0x0224 /* S0 TX Free Size Register */
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#define W5300_S0_RX_RSR 0x0228 /* S0 Received data Size */
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#define W5300_S0_TX_FIFO 0x022e /* S0 Transmit FIFO */
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#define W5300_S0_RX_FIFO 0x0230 /* S0 Receive FIFO */
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#define W5300_REGS_LEN 0x0400
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/*
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* Device driver private data structure
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*/
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struct w5300_priv {
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void __iomem *base;
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spinlock_t reg_lock;
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bool indirect;
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u16 (*read) (struct w5300_priv *priv, u16 addr);
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void (*write)(struct w5300_priv *priv, u16 addr, u16 data);
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int irq;
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int link_irq;
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int link_gpio;
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struct napi_struct napi;
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struct net_device *ndev;
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bool promisc;
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u32 msg_enable;
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};
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/************************************************************************
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*
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* Lowlevel I/O functions
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*
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***********************************************************************/
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/*
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* In direct address mode host system can directly access W5300 registers
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* after mapping to Memory-Mapped I/O space.
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*
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* 0x400 bytes are required for memory space.
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*/
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static inline u16 w5300_read_direct(struct w5300_priv *priv, u16 addr)
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{
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return ioread16(priv->base + (addr << CONFIG_WIZNET_BUS_SHIFT));
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}
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static inline void w5300_write_direct(struct w5300_priv *priv,
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u16 addr, u16 data)
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{
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iowrite16(data, priv->base + (addr << CONFIG_WIZNET_BUS_SHIFT));
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}
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/*
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* In indirect address mode host system indirectly accesses registers by
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* using Indirect Mode Address Register (IDM_AR) and Indirect Mode Data
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* Register (IDM_DR), which are directly mapped to Memory-Mapped I/O space.
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* Mode Register (MR) is directly accessible.
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*
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* Only 0x06 bytes are required for memory space.
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*/
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#define W5300_IDM_AR 0x0002 /* Indirect Mode Address */
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#define W5300_IDM_DR 0x0004 /* Indirect Mode Data */
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static u16 w5300_read_indirect(struct w5300_priv *priv, u16 addr)
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{
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unsigned long flags;
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u16 data;
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spin_lock_irqsave(&priv->reg_lock, flags);
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w5300_write_direct(priv, W5300_IDM_AR, addr);
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mmiowb();
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data = w5300_read_direct(priv, W5300_IDM_DR);
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spin_unlock_irqrestore(&priv->reg_lock, flags);
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return data;
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}
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static void w5300_write_indirect(struct w5300_priv *priv, u16 addr, u16 data)
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{
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unsigned long flags;
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spin_lock_irqsave(&priv->reg_lock, flags);
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w5300_write_direct(priv, W5300_IDM_AR, addr);
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mmiowb();
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w5300_write_direct(priv, W5300_IDM_DR, data);
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mmiowb();
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spin_unlock_irqrestore(&priv->reg_lock, flags);
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}
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#if defined(CONFIG_WIZNET_BUS_DIRECT)
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#define w5300_read w5300_read_direct
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#define w5300_write w5300_write_direct
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#elif defined(CONFIG_WIZNET_BUS_INDIRECT)
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#define w5300_read w5300_read_indirect
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#define w5300_write w5300_write_indirect
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#else /* CONFIG_WIZNET_BUS_ANY */
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#define w5300_read priv->read
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#define w5300_write priv->write
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#endif
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static u32 w5300_read32(struct w5300_priv *priv, u16 addr)
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{
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u32 data;
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data = w5300_read(priv, addr) << 16;
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data |= w5300_read(priv, addr + 2);
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return data;
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}
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static void w5300_write32(struct w5300_priv *priv, u16 addr, u32 data)
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{
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w5300_write(priv, addr, data >> 16);
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w5300_write(priv, addr + 2, data);
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}
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static int w5300_command(struct w5300_priv *priv, u16 cmd)
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{
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unsigned long timeout = jiffies + msecs_to_jiffies(100);
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w5300_write(priv, W5300_S0_CR, cmd);
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mmiowb();
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while (w5300_read(priv, W5300_S0_CR) != 0) {
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if (time_after(jiffies, timeout))
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return -EIO;
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cpu_relax();
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}
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return 0;
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}
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static void w5300_read_frame(struct w5300_priv *priv, u8 *buf, int len)
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{
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u16 fifo;
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int i;
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for (i = 0; i < len; i += 2) {
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fifo = w5300_read(priv, W5300_S0_RX_FIFO);
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*buf++ = fifo >> 8;
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*buf++ = fifo;
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}
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fifo = w5300_read(priv, W5300_S0_RX_FIFO);
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fifo = w5300_read(priv, W5300_S0_RX_FIFO);
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}
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static void w5300_write_frame(struct w5300_priv *priv, u8 *buf, int len)
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{
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u16 fifo;
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int i;
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for (i = 0; i < len; i += 2) {
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fifo = *buf++ << 8;
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fifo |= *buf++;
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w5300_write(priv, W5300_S0_TX_FIFO, fifo);
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}
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w5300_write32(priv, W5300_S0_TX_WRSR, len);
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}
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static void w5300_write_macaddr(struct w5300_priv *priv)
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{
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struct net_device *ndev = priv->ndev;
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w5300_write32(priv, W5300_SHARL,
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ndev->dev_addr[0] << 24 |
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ndev->dev_addr[1] << 16 |
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ndev->dev_addr[2] << 8 |
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ndev->dev_addr[3]);
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w5300_write(priv, W5300_SHARH,
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ndev->dev_addr[4] << 8 |
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ndev->dev_addr[5]);
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mmiowb();
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}
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static void w5300_hw_reset(struct w5300_priv *priv)
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{
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w5300_write_direct(priv, W5300_MR, MR_RST);
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mmiowb();
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mdelay(5);
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w5300_write_direct(priv, W5300_MR, priv->indirect ?
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MR_WDF(7) | MR_PB | MR_IND :
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MR_WDF(7) | MR_PB);
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mmiowb();
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w5300_write(priv, W5300_IMR, 0);
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w5300_write_macaddr(priv);
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/* Configure 128K of internal memory
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* as 64K RX fifo and 64K TX fifo
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*/
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w5300_write32(priv, W5300_RMSRL, 64 << 24);
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w5300_write32(priv, W5300_RMSRH, 0);
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w5300_write32(priv, W5300_TMSRL, 64 << 24);
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w5300_write32(priv, W5300_TMSRH, 0);
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w5300_write(priv, W5300_MTYPE, 0x00ff);
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mmiowb();
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}
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static void w5300_hw_start(struct w5300_priv *priv)
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{
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w5300_write(priv, W5300_S0_MR, priv->promisc ?
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S0_MR_MACRAW : S0_MR_MACRAW_MF);
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mmiowb();
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w5300_command(priv, S0_CR_OPEN);
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w5300_write(priv, W5300_S0_IMR, IS_ENABLED(CONFIG_WIZNET_TX_FLOW) ?
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S0_IR_RECV | S0_IR_SENDOK :
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S0_IR_RECV);
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w5300_write(priv, W5300_IMR, IR_S0);
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mmiowb();
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}
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static void w5300_hw_close(struct w5300_priv *priv)
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{
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w5300_write(priv, W5300_IMR, 0);
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mmiowb();
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w5300_command(priv, S0_CR_CLOSE);
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}
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/***********************************************************************
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*
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* Device driver functions / callbacks
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*
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***********************************************************************/
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static void w5300_get_drvinfo(struct net_device *ndev,
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struct ethtool_drvinfo *info)
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{
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strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
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strlcpy(info->version, DRV_VERSION, sizeof(info->version));
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strlcpy(info->bus_info, dev_name(ndev->dev.parent),
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sizeof(info->bus_info));
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}
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static u32 w5300_get_link(struct net_device *ndev)
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{
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struct w5300_priv *priv = netdev_priv(ndev);
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if (gpio_is_valid(priv->link_gpio))
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return !!gpio_get_value(priv->link_gpio);
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return 1;
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}
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static u32 w5300_get_msglevel(struct net_device *ndev)
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{
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struct w5300_priv *priv = netdev_priv(ndev);
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return priv->msg_enable;
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}
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static void w5300_set_msglevel(struct net_device *ndev, u32 value)
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{
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struct w5300_priv *priv = netdev_priv(ndev);
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priv->msg_enable = value;
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}
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static int w5300_get_regs_len(struct net_device *ndev)
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{
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return W5300_REGS_LEN;
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}
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static void w5300_get_regs(struct net_device *ndev,
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struct ethtool_regs *regs, void *_buf)
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{
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struct w5300_priv *priv = netdev_priv(ndev);
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u8 *buf = _buf;
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u16 addr;
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u16 data;
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regs->version = 1;
|
||||
for (addr = 0; addr < W5300_REGS_LEN; addr += 2) {
|
||||
switch (addr & 0x23f) {
|
||||
case W5300_S0_TX_FIFO: /* cannot read TX_FIFO */
|
||||
case W5300_S0_RX_FIFO: /* cannot read RX_FIFO */
|
||||
data = 0xffff;
|
||||
break;
|
||||
default:
|
||||
data = w5300_read(priv, addr);
|
||||
break;
|
||||
}
|
||||
*buf++ = data >> 8;
|
||||
*buf++ = data;
|
||||
}
|
||||
}
|
||||
|
||||
static void w5300_tx_timeout(struct net_device *ndev)
|
||||
{
|
||||
struct w5300_priv *priv = netdev_priv(ndev);
|
||||
|
||||
netif_stop_queue(ndev);
|
||||
w5300_hw_reset(priv);
|
||||
w5300_hw_start(priv);
|
||||
ndev->stats.tx_errors++;
|
||||
ndev->trans_start = jiffies;
|
||||
netif_wake_queue(ndev);
|
||||
}
|
||||
|
||||
static int w5300_start_tx(struct sk_buff *skb, struct net_device *ndev)
|
||||
{
|
||||
struct w5300_priv *priv = netdev_priv(ndev);
|
||||
|
||||
if (IS_ENABLED(CONFIG_WIZNET_TX_FLOW))
|
||||
netif_stop_queue(ndev);
|
||||
|
||||
w5300_write_frame(priv, skb->data, skb->len);
|
||||
mmiowb();
|
||||
ndev->stats.tx_packets++;
|
||||
ndev->stats.tx_bytes += skb->len;
|
||||
dev_kfree_skb(skb);
|
||||
netif_dbg(priv, tx_queued, ndev, "tx queued\n");
|
||||
|
||||
w5300_command(priv, S0_CR_SEND);
|
||||
|
||||
return NETDEV_TX_OK;
|
||||
}
|
||||
|
||||
static int w5300_napi_poll(struct napi_struct *napi, int budget)
|
||||
{
|
||||
struct w5300_priv *priv = container_of(napi, struct w5300_priv, napi);
|
||||
struct net_device *ndev = priv->ndev;
|
||||
struct sk_buff *skb;
|
||||
int rx_count;
|
||||
u16 rx_len;
|
||||
|
||||
for (rx_count = 0; rx_count < budget; rx_count++) {
|
||||
u32 rx_fifo_len = w5300_read32(priv, W5300_S0_RX_RSR);
|
||||
if (rx_fifo_len == 0)
|
||||
break;
|
||||
|
||||
rx_len = w5300_read(priv, W5300_S0_RX_FIFO);
|
||||
|
||||
skb = netdev_alloc_skb_ip_align(ndev, roundup(rx_len, 2));
|
||||
if (unlikely(!skb)) {
|
||||
u32 i;
|
||||
for (i = 0; i < rx_fifo_len; i += 2)
|
||||
w5300_read(priv, W5300_S0_RX_FIFO);
|
||||
ndev->stats.rx_dropped++;
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
skb_put(skb, rx_len);
|
||||
w5300_read_frame(priv, skb->data, rx_len);
|
||||
skb->protocol = eth_type_trans(skb, ndev);
|
||||
|
||||
netif_receive_skb(skb);
|
||||
ndev->stats.rx_packets++;
|
||||
ndev->stats.rx_bytes += rx_len;
|
||||
}
|
||||
|
||||
if (rx_count < budget) {
|
||||
w5300_write(priv, W5300_IMR, IR_S0);
|
||||
mmiowb();
|
||||
napi_complete(napi);
|
||||
}
|
||||
|
||||
return rx_count;
|
||||
}
|
||||
|
||||
static irqreturn_t w5300_interrupt(int irq, void *ndev_instance)
|
||||
{
|
||||
struct net_device *ndev = ndev_instance;
|
||||
struct w5300_priv *priv = netdev_priv(ndev);
|
||||
|
||||
int ir = w5300_read(priv, W5300_S0_IR);
|
||||
if (!ir)
|
||||
return IRQ_NONE;
|
||||
w5300_write(priv, W5300_S0_IR, ir);
|
||||
mmiowb();
|
||||
|
||||
if (IS_ENABLED(CONFIG_WIZNET_TX_FLOW) && (ir & S0_IR_SENDOK)) {
|
||||
netif_dbg(priv, tx_done, ndev, "tx done\n");
|
||||
netif_wake_queue(ndev);
|
||||
}
|
||||
|
||||
if (ir & S0_IR_RECV) {
|
||||
if (napi_schedule_prep(&priv->napi)) {
|
||||
w5300_write(priv, W5300_IMR, 0);
|
||||
mmiowb();
|
||||
__napi_schedule(&priv->napi);
|
||||
}
|
||||
}
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static irqreturn_t w5300_detect_link(int irq, void *ndev_instance)
|
||||
{
|
||||
struct net_device *ndev = ndev_instance;
|
||||
struct w5300_priv *priv = netdev_priv(ndev);
|
||||
|
||||
if (netif_running(ndev)) {
|
||||
if (gpio_get_value(priv->link_gpio) != 0) {
|
||||
netif_info(priv, link, ndev, "link is up\n");
|
||||
netif_carrier_on(ndev);
|
||||
} else {
|
||||
netif_info(priv, link, ndev, "link is down\n");
|
||||
netif_carrier_off(ndev);
|
||||
}
|
||||
}
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static void w5300_set_rx_mode(struct net_device *ndev)
|
||||
{
|
||||
struct w5300_priv *priv = netdev_priv(ndev);
|
||||
bool set_promisc = (ndev->flags & IFF_PROMISC) != 0;
|
||||
|
||||
if (priv->promisc != set_promisc) {
|
||||
priv->promisc = set_promisc;
|
||||
w5300_hw_start(priv);
|
||||
}
|
||||
}
|
||||
|
||||
static int w5300_set_macaddr(struct net_device *ndev, void *addr)
|
||||
{
|
||||
struct w5300_priv *priv = netdev_priv(ndev);
|
||||
struct sockaddr *sock_addr = addr;
|
||||
|
||||
if (!is_valid_ether_addr(sock_addr->sa_data))
|
||||
return -EADDRNOTAVAIL;
|
||||
memcpy(ndev->dev_addr, sock_addr->sa_data, ETH_ALEN);
|
||||
ndev->addr_assign_type &= ~NET_ADDR_RANDOM;
|
||||
w5300_write_macaddr(priv);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int w5300_open(struct net_device *ndev)
|
||||
{
|
||||
struct w5300_priv *priv = netdev_priv(ndev);
|
||||
|
||||
netif_info(priv, ifup, ndev, "enabling\n");
|
||||
if (!is_valid_ether_addr(ndev->dev_addr))
|
||||
return -EINVAL;
|
||||
w5300_hw_start(priv);
|
||||
napi_enable(&priv->napi);
|
||||
netif_start_queue(ndev);
|
||||
if (!gpio_is_valid(priv->link_gpio) ||
|
||||
gpio_get_value(priv->link_gpio) != 0)
|
||||
netif_carrier_on(ndev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int w5300_stop(struct net_device *ndev)
|
||||
{
|
||||
struct w5300_priv *priv = netdev_priv(ndev);
|
||||
|
||||
netif_info(priv, ifdown, ndev, "shutting down\n");
|
||||
w5300_hw_close(priv);
|
||||
netif_carrier_off(ndev);
|
||||
netif_stop_queue(ndev);
|
||||
napi_disable(&priv->napi);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct ethtool_ops w5300_ethtool_ops = {
|
||||
.get_drvinfo = w5300_get_drvinfo,
|
||||
.get_msglevel = w5300_get_msglevel,
|
||||
.set_msglevel = w5300_set_msglevel,
|
||||
.get_link = w5300_get_link,
|
||||
.get_regs_len = w5300_get_regs_len,
|
||||
.get_regs = w5300_get_regs,
|
||||
};
|
||||
|
||||
static const struct net_device_ops w5300_netdev_ops = {
|
||||
.ndo_open = w5300_open,
|
||||
.ndo_stop = w5300_stop,
|
||||
.ndo_start_xmit = w5300_start_tx,
|
||||
.ndo_tx_timeout = w5300_tx_timeout,
|
||||
.ndo_set_rx_mode = w5300_set_rx_mode,
|
||||
.ndo_set_mac_address = w5300_set_macaddr,
|
||||
.ndo_validate_addr = eth_validate_addr,
|
||||
.ndo_change_mtu = eth_change_mtu,
|
||||
};
|
||||
|
||||
static int __devinit w5300_hw_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct wiznet_platform_data *data = pdev->dev.platform_data;
|
||||
struct net_device *ndev = platform_get_drvdata(pdev);
|
||||
struct w5300_priv *priv = netdev_priv(ndev);
|
||||
const char *name = netdev_name(ndev);
|
||||
struct resource *mem;
|
||||
int mem_size;
|
||||
int irq;
|
||||
int ret;
|
||||
|
||||
if (data && is_valid_ether_addr(data->mac_addr)) {
|
||||
memcpy(ndev->dev_addr, data->mac_addr, ETH_ALEN);
|
||||
} else {
|
||||
random_ether_addr(ndev->dev_addr);
|
||||
ndev->addr_assign_type |= NET_ADDR_RANDOM;
|
||||
}
|
||||
|
||||
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||||
if (!mem)
|
||||
return -ENXIO;
|
||||
mem_size = resource_size(mem);
|
||||
if (!devm_request_mem_region(&pdev->dev, mem->start, mem_size, name))
|
||||
return -EBUSY;
|
||||
priv->base = devm_ioremap(&pdev->dev, mem->start, mem_size);
|
||||
if (!priv->base)
|
||||
return -EBUSY;
|
||||
|
||||
spin_lock_init(&priv->reg_lock);
|
||||
priv->indirect = mem_size < W5300_BUS_DIRECT_SIZE;
|
||||
if (priv->indirect) {
|
||||
priv->read = w5300_read_indirect;
|
||||
priv->write = w5300_write_indirect;
|
||||
} else {
|
||||
priv->read = w5300_read_direct;
|
||||
priv->write = w5300_write_direct;
|
||||
}
|
||||
|
||||
w5300_hw_reset(priv);
|
||||
if (w5300_read(priv, W5300_IDR) != IDR_W5300)
|
||||
return -ENODEV;
|
||||
|
||||
irq = platform_get_irq(pdev, 0);
|
||||
if (irq < 0)
|
||||
return irq;
|
||||
ret = request_irq(irq, w5300_interrupt,
|
||||
IRQ_TYPE_LEVEL_LOW, name, ndev);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
priv->irq = irq;
|
||||
|
||||
priv->link_gpio = data->link_gpio;
|
||||
if (gpio_is_valid(priv->link_gpio)) {
|
||||
char *link_name = devm_kzalloc(&pdev->dev, 16, GFP_KERNEL);
|
||||
if (!link_name)
|
||||
return -ENOMEM;
|
||||
snprintf(link_name, 16, "%s-link", name);
|
||||
priv->link_irq = gpio_to_irq(priv->link_gpio);
|
||||
if (request_any_context_irq(priv->link_irq, w5300_detect_link,
|
||||
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
|
||||
link_name, priv->ndev) < 0)
|
||||
priv->link_gpio = -EINVAL;
|
||||
}
|
||||
|
||||
netdev_info(ndev, "at 0x%llx irq %d\n", (u64)mem->start, irq);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __devinit w5300_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct w5300_priv *priv;
|
||||
struct net_device *ndev;
|
||||
int err;
|
||||
|
||||
ndev = alloc_etherdev(sizeof(*priv));
|
||||
if (!ndev)
|
||||
return -ENOMEM;
|
||||
SET_NETDEV_DEV(ndev, &pdev->dev);
|
||||
platform_set_drvdata(pdev, ndev);
|
||||
priv = netdev_priv(ndev);
|
||||
priv->ndev = ndev;
|
||||
|
||||
ether_setup(ndev);
|
||||
ndev->netdev_ops = &w5300_netdev_ops;
|
||||
ndev->ethtool_ops = &w5300_ethtool_ops;
|
||||
ndev->watchdog_timeo = HZ;
|
||||
netif_napi_add(ndev, &priv->napi, w5300_napi_poll, 16);
|
||||
|
||||
/* This chip doesn't support VLAN packets with normal MTU,
|
||||
* so disable VLAN for this device.
|
||||
*/
|
||||
ndev->features |= NETIF_F_VLAN_CHALLENGED;
|
||||
|
||||
err = register_netdev(ndev);
|
||||
if (err < 0)
|
||||
goto err_register;
|
||||
|
||||
err = w5300_hw_probe(pdev);
|
||||
if (err < 0)
|
||||
goto err_hw_probe;
|
||||
|
||||
return 0;
|
||||
|
||||
err_hw_probe:
|
||||
unregister_netdev(ndev);
|
||||
err_register:
|
||||
free_netdev(ndev);
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int __devexit w5300_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct net_device *ndev = platform_get_drvdata(pdev);
|
||||
struct w5300_priv *priv = netdev_priv(ndev);
|
||||
|
||||
w5300_hw_reset(priv);
|
||||
free_irq(priv->irq, ndev);
|
||||
if (gpio_is_valid(priv->link_gpio))
|
||||
free_irq(priv->link_irq, ndev);
|
||||
|
||||
unregister_netdev(ndev);
|
||||
free_netdev(ndev);
|
||||
platform_set_drvdata(pdev, NULL);
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
static int w5300_suspend(struct device *dev)
|
||||
{
|
||||
struct platform_device *pdev = to_platform_device(dev);
|
||||
struct net_device *ndev = platform_get_drvdata(pdev);
|
||||
struct w5300_priv *priv = netdev_priv(ndev);
|
||||
|
||||
if (netif_running(ndev)) {
|
||||
netif_carrier_off(ndev);
|
||||
netif_device_detach(ndev);
|
||||
|
||||
w5300_hw_close(priv);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int w5300_resume(struct device *dev)
|
||||
{
|
||||
struct platform_device *pdev = to_platform_device(dev);
|
||||
struct net_device *ndev = platform_get_drvdata(pdev);
|
||||
struct w5300_priv *priv = netdev_priv(ndev);
|
||||
|
||||
if (!netif_running(ndev)) {
|
||||
w5300_hw_reset(priv);
|
||||
w5300_hw_start(priv);
|
||||
|
||||
netif_device_attach(ndev);
|
||||
if (!gpio_is_valid(priv->link_gpio) ||
|
||||
gpio_get_value(priv->link_gpio) != 0)
|
||||
netif_carrier_on(ndev);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
#endif /* CONFIG_PM */
|
||||
|
||||
static SIMPLE_DEV_PM_OPS(w5300_pm_ops, w5300_suspend, w5300_resume);
|
||||
|
||||
static struct platform_driver w5300_driver = {
|
||||
.driver = {
|
||||
.name = DRV_NAME,
|
||||
.owner = THIS_MODULE,
|
||||
.pm = &w5300_pm_ops,
|
||||
},
|
||||
.probe = w5300_probe,
|
||||
.remove = __devexit_p(w5300_remove),
|
||||
};
|
||||
|
||||
module_platform_driver(w5300_driver);
|
||||
24
include/linux/platform_data/wiznet.h
Normal file
24
include/linux/platform_data/wiznet.h
Normal file
@ -0,0 +1,24 @@
|
||||
/*
|
||||
* Ethernet driver for the WIZnet W5x00 chip.
|
||||
*
|
||||
* Licensed under the GPL-2 or later.
|
||||
*/
|
||||
|
||||
#ifndef PLATFORM_DATA_WIZNET_H
|
||||
#define PLATFORM_DATA_WIZNET_H
|
||||
|
||||
#include <linux/if_ether.h>
|
||||
|
||||
struct wiznet_platform_data {
|
||||
int link_gpio;
|
||||
u8 mac_addr[ETH_ALEN];
|
||||
};
|
||||
|
||||
#ifndef CONFIG_WIZNET_BUS_SHIFT
|
||||
#define CONFIG_WIZNET_BUS_SHIFT 0
|
||||
#endif
|
||||
|
||||
#define W5100_BUS_DIRECT_SIZE (0x8000 << CONFIG_WIZNET_BUS_SHIFT)
|
||||
#define W5300_BUS_DIRECT_SIZE (0x0400 << CONFIG_WIZNET_BUS_SHIFT)
|
||||
|
||||
#endif /* PLATFORM_DATA_WIZNET_H */
|
||||
Loading…
Reference in New Issue
Block a user