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1690 lines
46 KiB
1690 lines
46 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/******************************************************************************* |
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Copyright(c) 2006 Tundra Semiconductor Corporation. |
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*******************************************************************************/ |
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/* This driver is based on the driver code originally developed |
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* for the Intel IOC80314 (ForestLake) Gigabit Ethernet by |
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* [email protected] * Copyright (C) 2003 TimeSys Corporation |
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* |
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* Currently changes from original version are: |
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* - porting to Tsi108-based platform and kernel 2.6 ([email protected]) |
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* - modifications to handle two ports independently and support for |
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* additional PHY devices ([email protected]) |
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* - Get hardware information from platform device. ([email protected]) |
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* |
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*/ |
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#include <linux/module.h> |
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#include <linux/types.h> |
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#include <linux/interrupt.h> |
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#include <linux/net.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/ethtool.h> |
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#include <linux/skbuff.h> |
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#include <linux/spinlock.h> |
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#include <linux/delay.h> |
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#include <linux/crc32.h> |
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#include <linux/mii.h> |
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#include <linux/device.h> |
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#include <linux/pci.h> |
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#include <linux/rtnetlink.h> |
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#include <linux/timer.h> |
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#include <linux/platform_device.h> |
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#include <linux/gfp.h> |
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#include <asm/io.h> |
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#include <asm/tsi108.h> |
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#include "tsi108_eth.h" |
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#define MII_READ_DELAY 10000 /* max link wait time in msec */ |
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#define TSI108_RXRING_LEN 256 |
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/* NOTE: The driver currently does not support receiving packets |
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* larger than the buffer size, so don't decrease this (unless you |
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* want to add such support). |
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*/ |
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#define TSI108_RXBUF_SIZE 1536 |
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#define TSI108_TXRING_LEN 256 |
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#define TSI108_TX_INT_FREQ 64 |
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/* Check the phy status every half a second. */ |
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#define CHECK_PHY_INTERVAL (HZ/2) |
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static int tsi108_init_one(struct platform_device *pdev); |
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static int tsi108_ether_remove(struct platform_device *pdev); |
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struct tsi108_prv_data { |
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void __iomem *regs; /* Base of normal regs */ |
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void __iomem *phyregs; /* Base of register bank used for PHY access */ |
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struct net_device *dev; |
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struct napi_struct napi; |
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unsigned int phy; /* Index of PHY for this interface */ |
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unsigned int irq_num; |
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unsigned int id; |
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unsigned int phy_type; |
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struct timer_list timer;/* Timer that triggers the check phy function */ |
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unsigned int rxtail; /* Next entry in rxring to read */ |
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unsigned int rxhead; /* Next entry in rxring to give a new buffer */ |
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unsigned int rxfree; /* Number of free, allocated RX buffers */ |
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unsigned int rxpending; /* Non-zero if there are still descriptors |
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* to be processed from a previous descriptor |
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* interrupt condition that has been cleared */ |
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unsigned int txtail; /* Next TX descriptor to check status on */ |
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unsigned int txhead; /* Next TX descriptor to use */ |
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/* Number of free TX descriptors. This could be calculated from |
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* rxhead and rxtail if one descriptor were left unused to disambiguate |
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* full and empty conditions, but it's simpler to just keep track |
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* explicitly. */ |
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unsigned int txfree; |
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unsigned int phy_ok; /* The PHY is currently powered on. */ |
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/* PHY status (duplex is 1 for half, 2 for full, |
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* so that the default 0 indicates that neither has |
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* yet been configured). */ |
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unsigned int link_up; |
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unsigned int speed; |
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unsigned int duplex; |
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tx_desc *txring; |
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rx_desc *rxring; |
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struct sk_buff *txskbs[TSI108_TXRING_LEN]; |
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struct sk_buff *rxskbs[TSI108_RXRING_LEN]; |
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dma_addr_t txdma, rxdma; |
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|
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/* txlock nests in misclock and phy_lock */ |
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spinlock_t txlock, misclock; |
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|
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/* stats is used to hold the upper bits of each hardware counter, |
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* and tmpstats is used to hold the full values for returning |
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* to the caller of get_stats(). They must be separate in case |
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* an overflow interrupt occurs before the stats are consumed. |
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*/ |
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struct net_device_stats stats; |
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struct net_device_stats tmpstats; |
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|
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/* These stats are kept separate in hardware, thus require individual |
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* fields for handling carry. They are combined in get_stats. |
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*/ |
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unsigned long rx_fcs; /* Add to rx_frame_errors */ |
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unsigned long rx_short_fcs; /* Add to rx_frame_errors */ |
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unsigned long rx_long_fcs; /* Add to rx_frame_errors */ |
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unsigned long rx_underruns; /* Add to rx_length_errors */ |
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unsigned long rx_overruns; /* Add to rx_length_errors */ |
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unsigned long tx_coll_abort; /* Add to tx_aborted_errors/collisions */ |
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unsigned long tx_pause_drop; /* Add to tx_aborted_errors */ |
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unsigned long mc_hash[16]; |
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u32 msg_enable; /* debug message level */ |
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struct mii_if_info mii_if; |
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unsigned int init_media; |
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struct platform_device *pdev; |
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}; |
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/* Structure for a device driver */ |
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static struct platform_driver tsi_eth_driver = { |
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.probe = tsi108_init_one, |
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.remove = tsi108_ether_remove, |
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.driver = { |
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.name = "tsi-ethernet", |
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}, |
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}; |
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static void tsi108_timed_checker(struct timer_list *t); |
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#ifdef DEBUG |
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static void dump_eth_one(struct net_device *dev) |
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{ |
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struct tsi108_prv_data *data = netdev_priv(dev); |
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printk("Dumping %s...\n", dev->name); |
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printk("intstat %x intmask %x phy_ok %d" |
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" link %d speed %d duplex %d\n", |
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TSI_READ(TSI108_EC_INTSTAT), |
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TSI_READ(TSI108_EC_INTMASK), data->phy_ok, |
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data->link_up, data->speed, data->duplex); |
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printk("TX: head %d, tail %d, free %d, stat %x, estat %x, err %x\n", |
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data->txhead, data->txtail, data->txfree, |
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TSI_READ(TSI108_EC_TXSTAT), |
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TSI_READ(TSI108_EC_TXESTAT), |
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TSI_READ(TSI108_EC_TXERR)); |
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printk("RX: head %d, tail %d, free %d, stat %x," |
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" estat %x, err %x, pending %d\n\n", |
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data->rxhead, data->rxtail, data->rxfree, |
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TSI_READ(TSI108_EC_RXSTAT), |
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TSI_READ(TSI108_EC_RXESTAT), |
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TSI_READ(TSI108_EC_RXERR), data->rxpending); |
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} |
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#endif |
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/* Synchronization is needed between the thread and up/down events. |
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* Note that the PHY is accessed through the same registers for both |
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* interfaces, so this can't be made interface-specific. |
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*/ |
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static DEFINE_SPINLOCK(phy_lock); |
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static int tsi108_read_mii(struct tsi108_prv_data *data, int reg) |
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{ |
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unsigned i; |
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TSI_WRITE_PHY(TSI108_MAC_MII_ADDR, |
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(data->phy << TSI108_MAC_MII_ADDR_PHY) | |
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(reg << TSI108_MAC_MII_ADDR_REG)); |
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TSI_WRITE_PHY(TSI108_MAC_MII_CMD, 0); |
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TSI_WRITE_PHY(TSI108_MAC_MII_CMD, TSI108_MAC_MII_CMD_READ); |
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for (i = 0; i < 100; i++) { |
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if (!(TSI_READ_PHY(TSI108_MAC_MII_IND) & |
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(TSI108_MAC_MII_IND_NOTVALID | TSI108_MAC_MII_IND_BUSY))) |
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break; |
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udelay(10); |
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} |
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if (i == 100) |
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return 0xffff; |
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else |
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return TSI_READ_PHY(TSI108_MAC_MII_DATAIN); |
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} |
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static void tsi108_write_mii(struct tsi108_prv_data *data, |
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int reg, u16 val) |
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{ |
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unsigned i = 100; |
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TSI_WRITE_PHY(TSI108_MAC_MII_ADDR, |
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(data->phy << TSI108_MAC_MII_ADDR_PHY) | |
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(reg << TSI108_MAC_MII_ADDR_REG)); |
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TSI_WRITE_PHY(TSI108_MAC_MII_DATAOUT, val); |
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while (i--) { |
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if(!(TSI_READ_PHY(TSI108_MAC_MII_IND) & |
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TSI108_MAC_MII_IND_BUSY)) |
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break; |
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udelay(10); |
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} |
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} |
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static int tsi108_mdio_read(struct net_device *dev, int addr, int reg) |
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{ |
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struct tsi108_prv_data *data = netdev_priv(dev); |
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return tsi108_read_mii(data, reg); |
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} |
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static void tsi108_mdio_write(struct net_device *dev, int addr, int reg, int val) |
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{ |
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struct tsi108_prv_data *data = netdev_priv(dev); |
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tsi108_write_mii(data, reg, val); |
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} |
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static inline void tsi108_write_tbi(struct tsi108_prv_data *data, |
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int reg, u16 val) |
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{ |
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unsigned i = 1000; |
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TSI_WRITE(TSI108_MAC_MII_ADDR, |
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(0x1e << TSI108_MAC_MII_ADDR_PHY) |
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| (reg << TSI108_MAC_MII_ADDR_REG)); |
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TSI_WRITE(TSI108_MAC_MII_DATAOUT, val); |
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while(i--) { |
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if(!(TSI_READ(TSI108_MAC_MII_IND) & TSI108_MAC_MII_IND_BUSY)) |
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return; |
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udelay(10); |
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} |
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printk(KERN_ERR "%s function time out\n", __func__); |
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} |
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static int mii_speed(struct mii_if_info *mii) |
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{ |
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int advert, lpa, val, media; |
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int lpa2 = 0; |
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int speed; |
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if (!mii_link_ok(mii)) |
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return 0; |
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val = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_BMSR); |
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if ((val & BMSR_ANEGCOMPLETE) == 0) |
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return 0; |
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advert = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_ADVERTISE); |
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lpa = (*mii->mdio_read) (mii->dev, mii->phy_id, MII_LPA); |
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media = mii_nway_result(advert & lpa); |
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if (mii->supports_gmii) |
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lpa2 = mii->mdio_read(mii->dev, mii->phy_id, MII_STAT1000); |
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speed = lpa2 & (LPA_1000FULL | LPA_1000HALF) ? 1000 : |
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(media & (ADVERTISE_100FULL | ADVERTISE_100HALF) ? 100 : 10); |
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return speed; |
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} |
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static void tsi108_check_phy(struct net_device *dev) |
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{ |
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struct tsi108_prv_data *data = netdev_priv(dev); |
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u32 mac_cfg2_reg, portctrl_reg; |
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u32 duplex; |
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u32 speed; |
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unsigned long flags; |
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spin_lock_irqsave(&phy_lock, flags); |
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if (!data->phy_ok) |
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goto out; |
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duplex = mii_check_media(&data->mii_if, netif_msg_link(data), data->init_media); |
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data->init_media = 0; |
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if (netif_carrier_ok(dev)) { |
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speed = mii_speed(&data->mii_if); |
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if ((speed != data->speed) || duplex) { |
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mac_cfg2_reg = TSI_READ(TSI108_MAC_CFG2); |
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portctrl_reg = TSI_READ(TSI108_EC_PORTCTRL); |
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mac_cfg2_reg &= ~TSI108_MAC_CFG2_IFACE_MASK; |
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if (speed == 1000) { |
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mac_cfg2_reg |= TSI108_MAC_CFG2_GIG; |
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portctrl_reg &= ~TSI108_EC_PORTCTRL_NOGIG; |
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} else { |
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mac_cfg2_reg |= TSI108_MAC_CFG2_NOGIG; |
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portctrl_reg |= TSI108_EC_PORTCTRL_NOGIG; |
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} |
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data->speed = speed; |
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if (data->mii_if.full_duplex) { |
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mac_cfg2_reg |= TSI108_MAC_CFG2_FULLDUPLEX; |
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portctrl_reg &= ~TSI108_EC_PORTCTRL_HALFDUPLEX; |
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data->duplex = 2; |
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} else { |
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mac_cfg2_reg &= ~TSI108_MAC_CFG2_FULLDUPLEX; |
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portctrl_reg |= TSI108_EC_PORTCTRL_HALFDUPLEX; |
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data->duplex = 1; |
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} |
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|
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TSI_WRITE(TSI108_MAC_CFG2, mac_cfg2_reg); |
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TSI_WRITE(TSI108_EC_PORTCTRL, portctrl_reg); |
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} |
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|
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if (data->link_up == 0) { |
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/* The manual says it can take 3-4 usecs for the speed change |
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* to take effect. |
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*/ |
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udelay(5); |
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|
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spin_lock(&data->txlock); |
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if (is_valid_ether_addr(dev->dev_addr) && data->txfree) |
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netif_wake_queue(dev); |
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|
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data->link_up = 1; |
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spin_unlock(&data->txlock); |
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} |
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} else { |
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if (data->link_up == 1) { |
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netif_stop_queue(dev); |
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data->link_up = 0; |
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printk(KERN_NOTICE "%s : link is down\n", dev->name); |
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} |
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goto out; |
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} |
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out: |
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spin_unlock_irqrestore(&phy_lock, flags); |
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} |
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|
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static inline void |
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tsi108_stat_carry_one(int carry, int carry_bit, int carry_shift, |
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unsigned long *upper) |
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{ |
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if (carry & carry_bit) |
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*upper += carry_shift; |
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} |
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|
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static void tsi108_stat_carry(struct net_device *dev) |
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{ |
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struct tsi108_prv_data *data = netdev_priv(dev); |
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unsigned long flags; |
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u32 carry1, carry2; |
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|
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spin_lock_irqsave(&data->misclock, flags); |
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|
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carry1 = TSI_READ(TSI108_STAT_CARRY1); |
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carry2 = TSI_READ(TSI108_STAT_CARRY2); |
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|
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TSI_WRITE(TSI108_STAT_CARRY1, carry1); |
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TSI_WRITE(TSI108_STAT_CARRY2, carry2); |
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|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXBYTES, |
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TSI108_STAT_RXBYTES_CARRY, &data->stats.rx_bytes); |
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|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXPKTS, |
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TSI108_STAT_RXPKTS_CARRY, |
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&data->stats.rx_packets); |
|
|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXFCS, |
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TSI108_STAT_RXFCS_CARRY, &data->rx_fcs); |
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|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXMCAST, |
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TSI108_STAT_RXMCAST_CARRY, |
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&data->stats.multicast); |
|
|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXALIGN, |
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TSI108_STAT_RXALIGN_CARRY, |
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&data->stats.rx_frame_errors); |
|
|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXLENGTH, |
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TSI108_STAT_RXLENGTH_CARRY, |
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&data->stats.rx_length_errors); |
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|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXRUNT, |
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TSI108_STAT_RXRUNT_CARRY, &data->rx_underruns); |
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|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXJUMBO, |
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TSI108_STAT_RXJUMBO_CARRY, &data->rx_overruns); |
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|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXFRAG, |
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TSI108_STAT_RXFRAG_CARRY, &data->rx_short_fcs); |
|
|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXJABBER, |
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TSI108_STAT_RXJABBER_CARRY, &data->rx_long_fcs); |
|
|
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tsi108_stat_carry_one(carry1, TSI108_STAT_CARRY1_RXDROP, |
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TSI108_STAT_RXDROP_CARRY, |
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&data->stats.rx_missed_errors); |
|
|
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tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXBYTES, |
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TSI108_STAT_TXBYTES_CARRY, &data->stats.tx_bytes); |
|
|
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tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXPKTS, |
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TSI108_STAT_TXPKTS_CARRY, |
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&data->stats.tx_packets); |
|
|
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tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXEXDEF, |
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TSI108_STAT_TXEXDEF_CARRY, |
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&data->stats.tx_aborted_errors); |
|
|
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tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXEXCOL, |
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TSI108_STAT_TXEXCOL_CARRY, &data->tx_coll_abort); |
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|
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tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXTCOL, |
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TSI108_STAT_TXTCOL_CARRY, |
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&data->stats.collisions); |
|
|
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tsi108_stat_carry_one(carry2, TSI108_STAT_CARRY2_TXPAUSE, |
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TSI108_STAT_TXPAUSEDROP_CARRY, |
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&data->tx_pause_drop); |
|
|
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spin_unlock_irqrestore(&data->misclock, flags); |
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} |
|
|
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/* Read a stat counter atomically with respect to carries. |
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* data->misclock must be held. |
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*/ |
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static inline unsigned long |
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tsi108_read_stat(struct tsi108_prv_data * data, int reg, int carry_bit, |
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int carry_shift, unsigned long *upper) |
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{ |
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int carryreg; |
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unsigned long val; |
|
|
|
if (reg < 0xb0) |
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carryreg = TSI108_STAT_CARRY1; |
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else |
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carryreg = TSI108_STAT_CARRY2; |
|
|
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again: |
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val = TSI_READ(reg) | *upper; |
|
|
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/* Check to see if it overflowed, but the interrupt hasn't |
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* been serviced yet. If so, handle the carry here, and |
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* try again. |
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*/ |
|
|
|
if (unlikely(TSI_READ(carryreg) & carry_bit)) { |
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*upper += carry_shift; |
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TSI_WRITE(carryreg, carry_bit); |
|
goto again; |
|
} |
|
|
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return val; |
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} |
|
|
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static struct net_device_stats *tsi108_get_stats(struct net_device *dev) |
|
{ |
|
unsigned long excol; |
|
|
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struct tsi108_prv_data *data = netdev_priv(dev); |
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spin_lock_irq(&data->misclock); |
|
|
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data->tmpstats.rx_packets = |
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tsi108_read_stat(data, TSI108_STAT_RXPKTS, |
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TSI108_STAT_CARRY1_RXPKTS, |
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TSI108_STAT_RXPKTS_CARRY, &data->stats.rx_packets); |
|
|
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data->tmpstats.tx_packets = |
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tsi108_read_stat(data, TSI108_STAT_TXPKTS, |
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TSI108_STAT_CARRY2_TXPKTS, |
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TSI108_STAT_TXPKTS_CARRY, &data->stats.tx_packets); |
|
|
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data->tmpstats.rx_bytes = |
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tsi108_read_stat(data, TSI108_STAT_RXBYTES, |
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TSI108_STAT_CARRY1_RXBYTES, |
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TSI108_STAT_RXBYTES_CARRY, &data->stats.rx_bytes); |
|
|
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data->tmpstats.tx_bytes = |
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tsi108_read_stat(data, TSI108_STAT_TXBYTES, |
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TSI108_STAT_CARRY2_TXBYTES, |
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TSI108_STAT_TXBYTES_CARRY, &data->stats.tx_bytes); |
|
|
|
data->tmpstats.multicast = |
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tsi108_read_stat(data, TSI108_STAT_RXMCAST, |
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TSI108_STAT_CARRY1_RXMCAST, |
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TSI108_STAT_RXMCAST_CARRY, &data->stats.multicast); |
|
|
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excol = tsi108_read_stat(data, TSI108_STAT_TXEXCOL, |
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TSI108_STAT_CARRY2_TXEXCOL, |
|
TSI108_STAT_TXEXCOL_CARRY, |
|
&data->tx_coll_abort); |
|
|
|
data->tmpstats.collisions = |
|
tsi108_read_stat(data, TSI108_STAT_TXTCOL, |
|
TSI108_STAT_CARRY2_TXTCOL, |
|
TSI108_STAT_TXTCOL_CARRY, &data->stats.collisions); |
|
|
|
data->tmpstats.collisions += excol; |
|
|
|
data->tmpstats.rx_length_errors = |
|
tsi108_read_stat(data, TSI108_STAT_RXLENGTH, |
|
TSI108_STAT_CARRY1_RXLENGTH, |
|
TSI108_STAT_RXLENGTH_CARRY, |
|
&data->stats.rx_length_errors); |
|
|
|
data->tmpstats.rx_length_errors += |
|
tsi108_read_stat(data, TSI108_STAT_RXRUNT, |
|
TSI108_STAT_CARRY1_RXRUNT, |
|
TSI108_STAT_RXRUNT_CARRY, &data->rx_underruns); |
|
|
|
data->tmpstats.rx_length_errors += |
|
tsi108_read_stat(data, TSI108_STAT_RXJUMBO, |
|
TSI108_STAT_CARRY1_RXJUMBO, |
|
TSI108_STAT_RXJUMBO_CARRY, &data->rx_overruns); |
|
|
|
data->tmpstats.rx_frame_errors = |
|
tsi108_read_stat(data, TSI108_STAT_RXALIGN, |
|
TSI108_STAT_CARRY1_RXALIGN, |
|
TSI108_STAT_RXALIGN_CARRY, |
|
&data->stats.rx_frame_errors); |
|
|
|
data->tmpstats.rx_frame_errors += |
|
tsi108_read_stat(data, TSI108_STAT_RXFCS, |
|
TSI108_STAT_CARRY1_RXFCS, TSI108_STAT_RXFCS_CARRY, |
|
&data->rx_fcs); |
|
|
|
data->tmpstats.rx_frame_errors += |
|
tsi108_read_stat(data, TSI108_STAT_RXFRAG, |
|
TSI108_STAT_CARRY1_RXFRAG, |
|
TSI108_STAT_RXFRAG_CARRY, &data->rx_short_fcs); |
|
|
|
data->tmpstats.rx_missed_errors = |
|
tsi108_read_stat(data, TSI108_STAT_RXDROP, |
|
TSI108_STAT_CARRY1_RXDROP, |
|
TSI108_STAT_RXDROP_CARRY, |
|
&data->stats.rx_missed_errors); |
|
|
|
/* These three are maintained by software. */ |
|
data->tmpstats.rx_fifo_errors = data->stats.rx_fifo_errors; |
|
data->tmpstats.rx_crc_errors = data->stats.rx_crc_errors; |
|
|
|
data->tmpstats.tx_aborted_errors = |
|
tsi108_read_stat(data, TSI108_STAT_TXEXDEF, |
|
TSI108_STAT_CARRY2_TXEXDEF, |
|
TSI108_STAT_TXEXDEF_CARRY, |
|
&data->stats.tx_aborted_errors); |
|
|
|
data->tmpstats.tx_aborted_errors += |
|
tsi108_read_stat(data, TSI108_STAT_TXPAUSEDROP, |
|
TSI108_STAT_CARRY2_TXPAUSE, |
|
TSI108_STAT_TXPAUSEDROP_CARRY, |
|
&data->tx_pause_drop); |
|
|
|
data->tmpstats.tx_aborted_errors += excol; |
|
|
|
data->tmpstats.tx_errors = data->tmpstats.tx_aborted_errors; |
|
data->tmpstats.rx_errors = data->tmpstats.rx_length_errors + |
|
data->tmpstats.rx_crc_errors + |
|
data->tmpstats.rx_frame_errors + |
|
data->tmpstats.rx_fifo_errors + data->tmpstats.rx_missed_errors; |
|
|
|
spin_unlock_irq(&data->misclock); |
|
return &data->tmpstats; |
|
} |
|
|
|
static void tsi108_restart_rx(struct tsi108_prv_data * data, struct net_device *dev) |
|
{ |
|
TSI_WRITE(TSI108_EC_RXQ_PTRHIGH, |
|
TSI108_EC_RXQ_PTRHIGH_VALID); |
|
|
|
TSI_WRITE(TSI108_EC_RXCTRL, TSI108_EC_RXCTRL_GO |
|
| TSI108_EC_RXCTRL_QUEUE0); |
|
} |
|
|
|
static void tsi108_restart_tx(struct tsi108_prv_data * data) |
|
{ |
|
TSI_WRITE(TSI108_EC_TXQ_PTRHIGH, |
|
TSI108_EC_TXQ_PTRHIGH_VALID); |
|
|
|
TSI_WRITE(TSI108_EC_TXCTRL, TSI108_EC_TXCTRL_IDLEINT | |
|
TSI108_EC_TXCTRL_GO | TSI108_EC_TXCTRL_QUEUE0); |
|
} |
|
|
|
/* txlock must be held by caller, with IRQs disabled, and |
|
* with permission to re-enable them when the lock is dropped. |
|
*/ |
|
static void tsi108_complete_tx(struct net_device *dev) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
int tx; |
|
struct sk_buff *skb; |
|
int release = 0; |
|
|
|
while (!data->txfree || data->txhead != data->txtail) { |
|
tx = data->txtail; |
|
|
|
if (data->txring[tx].misc & TSI108_TX_OWN) |
|
break; |
|
|
|
skb = data->txskbs[tx]; |
|
|
|
if (!(data->txring[tx].misc & TSI108_TX_OK)) |
|
printk("%s: bad tx packet, misc %x\n", |
|
dev->name, data->txring[tx].misc); |
|
|
|
data->txtail = (data->txtail + 1) % TSI108_TXRING_LEN; |
|
data->txfree++; |
|
|
|
if (data->txring[tx].misc & TSI108_TX_EOF) { |
|
dev_kfree_skb_any(skb); |
|
release++; |
|
} |
|
} |
|
|
|
if (release) { |
|
if (is_valid_ether_addr(dev->dev_addr) && data->link_up) |
|
netif_wake_queue(dev); |
|
} |
|
} |
|
|
|
static int tsi108_send_packet(struct sk_buff * skb, struct net_device *dev) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
int frags = skb_shinfo(skb)->nr_frags + 1; |
|
int i; |
|
|
|
if (!data->phy_ok && net_ratelimit()) |
|
printk(KERN_ERR "%s: Transmit while PHY is down!\n", dev->name); |
|
|
|
if (!data->link_up) { |
|
printk(KERN_ERR "%s: Transmit while link is down!\n", |
|
dev->name); |
|
netif_stop_queue(dev); |
|
return NETDEV_TX_BUSY; |
|
} |
|
|
|
if (data->txfree < MAX_SKB_FRAGS + 1) { |
|
netif_stop_queue(dev); |
|
|
|
if (net_ratelimit()) |
|
printk(KERN_ERR "%s: Transmit with full tx ring!\n", |
|
dev->name); |
|
return NETDEV_TX_BUSY; |
|
} |
|
|
|
if (data->txfree - frags < MAX_SKB_FRAGS + 1) { |
|
netif_stop_queue(dev); |
|
} |
|
|
|
spin_lock_irq(&data->txlock); |
|
|
|
for (i = 0; i < frags; i++) { |
|
int misc = 0; |
|
int tx = data->txhead; |
|
|
|
/* This is done to mark every TSI108_TX_INT_FREQ tx buffers with |
|
* the interrupt bit. TX descriptor-complete interrupts are |
|
* enabled when the queue fills up, and masked when there is |
|
* still free space. This way, when saturating the outbound |
|
* link, the tx interrupts are kept to a reasonable level. |
|
* When the queue is not full, reclamation of skbs still occurs |
|
* as new packets are transmitted, or on a queue-empty |
|
* interrupt. |
|
*/ |
|
|
|
if ((tx % TSI108_TX_INT_FREQ == 0) && |
|
((TSI108_TXRING_LEN - data->txfree) >= TSI108_TX_INT_FREQ)) |
|
misc = TSI108_TX_INT; |
|
|
|
data->txskbs[tx] = skb; |
|
|
|
if (i == 0) { |
|
data->txring[tx].buf0 = dma_map_single(&data->pdev->dev, |
|
skb->data, skb_headlen(skb), |
|
DMA_TO_DEVICE); |
|
data->txring[tx].len = skb_headlen(skb); |
|
misc |= TSI108_TX_SOF; |
|
} else { |
|
const skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1]; |
|
|
|
data->txring[tx].buf0 = |
|
skb_frag_dma_map(&data->pdev->dev, frag, |
|
0, skb_frag_size(frag), |
|
DMA_TO_DEVICE); |
|
data->txring[tx].len = skb_frag_size(frag); |
|
} |
|
|
|
if (i == frags - 1) |
|
misc |= TSI108_TX_EOF; |
|
|
|
if (netif_msg_pktdata(data)) { |
|
int i; |
|
printk("%s: Tx Frame contents (%d)\n", dev->name, |
|
skb->len); |
|
for (i = 0; i < skb->len; i++) |
|
printk(" %2.2x", skb->data[i]); |
|
printk(".\n"); |
|
} |
|
data->txring[tx].misc = misc | TSI108_TX_OWN; |
|
|
|
data->txhead = (data->txhead + 1) % TSI108_TXRING_LEN; |
|
data->txfree--; |
|
} |
|
|
|
tsi108_complete_tx(dev); |
|
|
|
/* This must be done after the check for completed tx descriptors, |
|
* so that the tail pointer is correct. |
|
*/ |
|
|
|
if (!(TSI_READ(TSI108_EC_TXSTAT) & TSI108_EC_TXSTAT_QUEUE0)) |
|
tsi108_restart_tx(data); |
|
|
|
spin_unlock_irq(&data->txlock); |
|
return NETDEV_TX_OK; |
|
} |
|
|
|
static int tsi108_complete_rx(struct net_device *dev, int budget) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
int done = 0; |
|
|
|
while (data->rxfree && done != budget) { |
|
int rx = data->rxtail; |
|
struct sk_buff *skb; |
|
|
|
if (data->rxring[rx].misc & TSI108_RX_OWN) |
|
break; |
|
|
|
skb = data->rxskbs[rx]; |
|
data->rxtail = (data->rxtail + 1) % TSI108_RXRING_LEN; |
|
data->rxfree--; |
|
done++; |
|
|
|
if (data->rxring[rx].misc & TSI108_RX_BAD) { |
|
spin_lock_irq(&data->misclock); |
|
|
|
if (data->rxring[rx].misc & TSI108_RX_CRC) |
|
data->stats.rx_crc_errors++; |
|
if (data->rxring[rx].misc & TSI108_RX_OVER) |
|
data->stats.rx_fifo_errors++; |
|
|
|
spin_unlock_irq(&data->misclock); |
|
|
|
dev_kfree_skb_any(skb); |
|
continue; |
|
} |
|
if (netif_msg_pktdata(data)) { |
|
int i; |
|
printk("%s: Rx Frame contents (%d)\n", |
|
dev->name, data->rxring[rx].len); |
|
for (i = 0; i < data->rxring[rx].len; i++) |
|
printk(" %2.2x", skb->data[i]); |
|
printk(".\n"); |
|
} |
|
|
|
skb_put(skb, data->rxring[rx].len); |
|
skb->protocol = eth_type_trans(skb, dev); |
|
netif_receive_skb(skb); |
|
} |
|
|
|
return done; |
|
} |
|
|
|
static int tsi108_refill_rx(struct net_device *dev, int budget) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
int done = 0; |
|
|
|
while (data->rxfree != TSI108_RXRING_LEN && done != budget) { |
|
int rx = data->rxhead; |
|
struct sk_buff *skb; |
|
|
|
skb = netdev_alloc_skb_ip_align(dev, TSI108_RXBUF_SIZE); |
|
data->rxskbs[rx] = skb; |
|
if (!skb) |
|
break; |
|
|
|
data->rxring[rx].buf0 = dma_map_single(&data->pdev->dev, |
|
skb->data, TSI108_RX_SKB_SIZE, |
|
DMA_FROM_DEVICE); |
|
|
|
/* Sometimes the hardware sets blen to zero after packet |
|
* reception, even though the manual says that it's only ever |
|
* modified by the driver. |
|
*/ |
|
|
|
data->rxring[rx].blen = TSI108_RX_SKB_SIZE; |
|
data->rxring[rx].misc = TSI108_RX_OWN | TSI108_RX_INT; |
|
|
|
data->rxhead = (data->rxhead + 1) % TSI108_RXRING_LEN; |
|
data->rxfree++; |
|
done++; |
|
} |
|
|
|
if (done != 0 && !(TSI_READ(TSI108_EC_RXSTAT) & |
|
TSI108_EC_RXSTAT_QUEUE0)) |
|
tsi108_restart_rx(data, dev); |
|
|
|
return done; |
|
} |
|
|
|
static int tsi108_poll(struct napi_struct *napi, int budget) |
|
{ |
|
struct tsi108_prv_data *data = container_of(napi, struct tsi108_prv_data, napi); |
|
struct net_device *dev = data->dev; |
|
u32 estat = TSI_READ(TSI108_EC_RXESTAT); |
|
u32 intstat = TSI_READ(TSI108_EC_INTSTAT); |
|
int num_received = 0, num_filled = 0; |
|
|
|
intstat &= TSI108_INT_RXQUEUE0 | TSI108_INT_RXTHRESH | |
|
TSI108_INT_RXOVERRUN | TSI108_INT_RXERROR | TSI108_INT_RXWAIT; |
|
|
|
TSI_WRITE(TSI108_EC_RXESTAT, estat); |
|
TSI_WRITE(TSI108_EC_INTSTAT, intstat); |
|
|
|
if (data->rxpending || (estat & TSI108_EC_RXESTAT_Q0_DESCINT)) |
|
num_received = tsi108_complete_rx(dev, budget); |
|
|
|
/* This should normally fill no more slots than the number of |
|
* packets received in tsi108_complete_rx(). The exception |
|
* is when we previously ran out of memory for RX SKBs. In that |
|
* case, it's helpful to obey the budget, not only so that the |
|
* CPU isn't hogged, but so that memory (which may still be low) |
|
* is not hogged by one device. |
|
* |
|
* A work unit is considered to be two SKBs to allow us to catch |
|
* up when the ring has shrunk due to out-of-memory but we're |
|
* still removing the full budget's worth of packets each time. |
|
*/ |
|
|
|
if (data->rxfree < TSI108_RXRING_LEN) |
|
num_filled = tsi108_refill_rx(dev, budget * 2); |
|
|
|
if (intstat & TSI108_INT_RXERROR) { |
|
u32 err = TSI_READ(TSI108_EC_RXERR); |
|
TSI_WRITE(TSI108_EC_RXERR, err); |
|
|
|
if (err) { |
|
if (net_ratelimit()) |
|
printk(KERN_DEBUG "%s: RX error %x\n", |
|
dev->name, err); |
|
|
|
if (!(TSI_READ(TSI108_EC_RXSTAT) & |
|
TSI108_EC_RXSTAT_QUEUE0)) |
|
tsi108_restart_rx(data, dev); |
|
} |
|
} |
|
|
|
if (intstat & TSI108_INT_RXOVERRUN) { |
|
spin_lock_irq(&data->misclock); |
|
data->stats.rx_fifo_errors++; |
|
spin_unlock_irq(&data->misclock); |
|
} |
|
|
|
if (num_received < budget) { |
|
data->rxpending = 0; |
|
napi_complete_done(napi, num_received); |
|
|
|
TSI_WRITE(TSI108_EC_INTMASK, |
|
TSI_READ(TSI108_EC_INTMASK) |
|
& ~(TSI108_INT_RXQUEUE0 |
|
| TSI108_INT_RXTHRESH | |
|
TSI108_INT_RXOVERRUN | |
|
TSI108_INT_RXERROR | |
|
TSI108_INT_RXWAIT)); |
|
} else { |
|
data->rxpending = 1; |
|
} |
|
|
|
return num_received; |
|
} |
|
|
|
static void tsi108_rx_int(struct net_device *dev) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
|
|
/* A race could cause dev to already be scheduled, so it's not an |
|
* error if that happens (and interrupts shouldn't be re-masked, |
|
* because that can cause harmful races, if poll has already |
|
* unmasked them but not cleared LINK_STATE_SCHED). |
|
* |
|
* This can happen if this code races with tsi108_poll(), which masks |
|
* the interrupts after tsi108_irq_one() read the mask, but before |
|
* napi_schedule is called. It could also happen due to calls |
|
* from tsi108_check_rxring(). |
|
*/ |
|
|
|
if (napi_schedule_prep(&data->napi)) { |
|
/* Mask, rather than ack, the receive interrupts. The ack |
|
* will happen in tsi108_poll(). |
|
*/ |
|
|
|
TSI_WRITE(TSI108_EC_INTMASK, |
|
TSI_READ(TSI108_EC_INTMASK) | |
|
TSI108_INT_RXQUEUE0 |
|
| TSI108_INT_RXTHRESH | |
|
TSI108_INT_RXOVERRUN | TSI108_INT_RXERROR | |
|
TSI108_INT_RXWAIT); |
|
__napi_schedule(&data->napi); |
|
} else { |
|
if (!netif_running(dev)) { |
|
/* This can happen if an interrupt occurs while the |
|
* interface is being brought down, as the START |
|
* bit is cleared before the stop function is called. |
|
* |
|
* In this case, the interrupts must be masked, or |
|
* they will continue indefinitely. |
|
* |
|
* There's a race here if the interface is brought down |
|
* and then up in rapid succession, as the device could |
|
* be made running after the above check and before |
|
* the masking below. This will only happen if the IRQ |
|
* thread has a lower priority than the task brining |
|
* up the interface. Fixing this race would likely |
|
* require changes in generic code. |
|
*/ |
|
|
|
TSI_WRITE(TSI108_EC_INTMASK, |
|
TSI_READ |
|
(TSI108_EC_INTMASK) | |
|
TSI108_INT_RXQUEUE0 | |
|
TSI108_INT_RXTHRESH | |
|
TSI108_INT_RXOVERRUN | |
|
TSI108_INT_RXERROR | |
|
TSI108_INT_RXWAIT); |
|
} |
|
} |
|
} |
|
|
|
/* If the RX ring has run out of memory, try periodically |
|
* to allocate some more, as otherwise poll would never |
|
* get called (apart from the initial end-of-queue condition). |
|
* |
|
* This is called once per second (by default) from the thread. |
|
*/ |
|
|
|
static void tsi108_check_rxring(struct net_device *dev) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
|
|
/* A poll is scheduled, as opposed to caling tsi108_refill_rx |
|
* directly, so as to keep the receive path single-threaded |
|
* (and thus not needing a lock). |
|
*/ |
|
|
|
if (netif_running(dev) && data->rxfree < TSI108_RXRING_LEN / 4) |
|
tsi108_rx_int(dev); |
|
} |
|
|
|
static void tsi108_tx_int(struct net_device *dev) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
u32 estat = TSI_READ(TSI108_EC_TXESTAT); |
|
|
|
TSI_WRITE(TSI108_EC_TXESTAT, estat); |
|
TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_TXQUEUE0 | |
|
TSI108_INT_TXIDLE | TSI108_INT_TXERROR); |
|
if (estat & TSI108_EC_TXESTAT_Q0_ERR) { |
|
u32 err = TSI_READ(TSI108_EC_TXERR); |
|
TSI_WRITE(TSI108_EC_TXERR, err); |
|
|
|
if (err && net_ratelimit()) |
|
printk(KERN_ERR "%s: TX error %x\n", dev->name, err); |
|
} |
|
|
|
if (estat & (TSI108_EC_TXESTAT_Q0_DESCINT | TSI108_EC_TXESTAT_Q0_EOQ)) { |
|
spin_lock(&data->txlock); |
|
tsi108_complete_tx(dev); |
|
spin_unlock(&data->txlock); |
|
} |
|
} |
|
|
|
|
|
static irqreturn_t tsi108_irq(int irq, void *dev_id) |
|
{ |
|
struct net_device *dev = dev_id; |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
u32 stat = TSI_READ(TSI108_EC_INTSTAT); |
|
|
|
if (!(stat & TSI108_INT_ANY)) |
|
return IRQ_NONE; /* Not our interrupt */ |
|
|
|
stat &= ~TSI_READ(TSI108_EC_INTMASK); |
|
|
|
if (stat & (TSI108_INT_TXQUEUE0 | TSI108_INT_TXIDLE | |
|
TSI108_INT_TXERROR)) |
|
tsi108_tx_int(dev); |
|
if (stat & (TSI108_INT_RXQUEUE0 | TSI108_INT_RXTHRESH | |
|
TSI108_INT_RXWAIT | TSI108_INT_RXOVERRUN | |
|
TSI108_INT_RXERROR)) |
|
tsi108_rx_int(dev); |
|
|
|
if (stat & TSI108_INT_SFN) { |
|
if (net_ratelimit()) |
|
printk(KERN_DEBUG "%s: SFN error\n", dev->name); |
|
TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_SFN); |
|
} |
|
|
|
if (stat & TSI108_INT_STATCARRY) { |
|
tsi108_stat_carry(dev); |
|
TSI_WRITE(TSI108_EC_INTSTAT, TSI108_INT_STATCARRY); |
|
} |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
static void tsi108_stop_ethernet(struct net_device *dev) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
int i = 1000; |
|
/* Disable all TX and RX queues ... */ |
|
TSI_WRITE(TSI108_EC_TXCTRL, 0); |
|
TSI_WRITE(TSI108_EC_RXCTRL, 0); |
|
|
|
/* ...and wait for them to become idle */ |
|
while(i--) { |
|
if(!(TSI_READ(TSI108_EC_TXSTAT) & TSI108_EC_TXSTAT_ACTIVE)) |
|
break; |
|
udelay(10); |
|
} |
|
i = 1000; |
|
while(i--){ |
|
if(!(TSI_READ(TSI108_EC_RXSTAT) & TSI108_EC_RXSTAT_ACTIVE)) |
|
return; |
|
udelay(10); |
|
} |
|
printk(KERN_ERR "%s function time out\n", __func__); |
|
} |
|
|
|
static void tsi108_reset_ether(struct tsi108_prv_data * data) |
|
{ |
|
TSI_WRITE(TSI108_MAC_CFG1, TSI108_MAC_CFG1_SOFTRST); |
|
udelay(100); |
|
TSI_WRITE(TSI108_MAC_CFG1, 0); |
|
|
|
TSI_WRITE(TSI108_EC_PORTCTRL, TSI108_EC_PORTCTRL_STATRST); |
|
udelay(100); |
|
TSI_WRITE(TSI108_EC_PORTCTRL, |
|
TSI_READ(TSI108_EC_PORTCTRL) & |
|
~TSI108_EC_PORTCTRL_STATRST); |
|
|
|
TSI_WRITE(TSI108_EC_TXCFG, TSI108_EC_TXCFG_RST); |
|
udelay(100); |
|
TSI_WRITE(TSI108_EC_TXCFG, |
|
TSI_READ(TSI108_EC_TXCFG) & |
|
~TSI108_EC_TXCFG_RST); |
|
|
|
TSI_WRITE(TSI108_EC_RXCFG, TSI108_EC_RXCFG_RST); |
|
udelay(100); |
|
TSI_WRITE(TSI108_EC_RXCFG, |
|
TSI_READ(TSI108_EC_RXCFG) & |
|
~TSI108_EC_RXCFG_RST); |
|
|
|
TSI_WRITE(TSI108_MAC_MII_MGMT_CFG, |
|
TSI_READ(TSI108_MAC_MII_MGMT_CFG) | |
|
TSI108_MAC_MII_MGMT_RST); |
|
udelay(100); |
|
TSI_WRITE(TSI108_MAC_MII_MGMT_CFG, |
|
(TSI_READ(TSI108_MAC_MII_MGMT_CFG) & |
|
~(TSI108_MAC_MII_MGMT_RST | |
|
TSI108_MAC_MII_MGMT_CLK)) | 0x07); |
|
} |
|
|
|
static int tsi108_get_mac(struct net_device *dev) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
u32 word1 = TSI_READ(TSI108_MAC_ADDR1); |
|
u32 word2 = TSI_READ(TSI108_MAC_ADDR2); |
|
|
|
/* Note that the octets are reversed from what the manual says, |
|
* producing an even weirder ordering... |
|
*/ |
|
if (word2 == 0 && word1 == 0) { |
|
dev->dev_addr[0] = 0x00; |
|
dev->dev_addr[1] = 0x06; |
|
dev->dev_addr[2] = 0xd2; |
|
dev->dev_addr[3] = 0x00; |
|
dev->dev_addr[4] = 0x00; |
|
if (0x8 == data->phy) |
|
dev->dev_addr[5] = 0x01; |
|
else |
|
dev->dev_addr[5] = 0x02; |
|
|
|
word2 = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 24); |
|
|
|
word1 = (dev->dev_addr[2] << 0) | (dev->dev_addr[3] << 8) | |
|
(dev->dev_addr[4] << 16) | (dev->dev_addr[5] << 24); |
|
|
|
TSI_WRITE(TSI108_MAC_ADDR1, word1); |
|
TSI_WRITE(TSI108_MAC_ADDR2, word2); |
|
} else { |
|
dev->dev_addr[0] = (word2 >> 16) & 0xff; |
|
dev->dev_addr[1] = (word2 >> 24) & 0xff; |
|
dev->dev_addr[2] = (word1 >> 0) & 0xff; |
|
dev->dev_addr[3] = (word1 >> 8) & 0xff; |
|
dev->dev_addr[4] = (word1 >> 16) & 0xff; |
|
dev->dev_addr[5] = (word1 >> 24) & 0xff; |
|
} |
|
|
|
if (!is_valid_ether_addr(dev->dev_addr)) { |
|
printk(KERN_ERR |
|
"%s: Invalid MAC address. word1: %08x, word2: %08x\n", |
|
dev->name, word1, word2); |
|
return -EINVAL; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int tsi108_set_mac(struct net_device *dev, void *addr) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
u32 word1, word2; |
|
int i; |
|
|
|
if (!is_valid_ether_addr(addr)) |
|
return -EADDRNOTAVAIL; |
|
|
|
for (i = 0; i < 6; i++) |
|
/* +2 is for the offset of the HW addr type */ |
|
dev->dev_addr[i] = ((unsigned char *)addr)[i + 2]; |
|
|
|
word2 = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 24); |
|
|
|
word1 = (dev->dev_addr[2] << 0) | (dev->dev_addr[3] << 8) | |
|
(dev->dev_addr[4] << 16) | (dev->dev_addr[5] << 24); |
|
|
|
spin_lock_irq(&data->misclock); |
|
TSI_WRITE(TSI108_MAC_ADDR1, word1); |
|
TSI_WRITE(TSI108_MAC_ADDR2, word2); |
|
spin_lock(&data->txlock); |
|
|
|
if (data->txfree && data->link_up) |
|
netif_wake_queue(dev); |
|
|
|
spin_unlock(&data->txlock); |
|
spin_unlock_irq(&data->misclock); |
|
return 0; |
|
} |
|
|
|
/* Protected by dev->xmit_lock. */ |
|
static void tsi108_set_rx_mode(struct net_device *dev) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
u32 rxcfg = TSI_READ(TSI108_EC_RXCFG); |
|
|
|
if (dev->flags & IFF_PROMISC) { |
|
rxcfg &= ~(TSI108_EC_RXCFG_UC_HASH | TSI108_EC_RXCFG_MC_HASH); |
|
rxcfg |= TSI108_EC_RXCFG_UFE | TSI108_EC_RXCFG_MFE; |
|
goto out; |
|
} |
|
|
|
rxcfg &= ~(TSI108_EC_RXCFG_UFE | TSI108_EC_RXCFG_MFE); |
|
|
|
if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) { |
|
int i; |
|
struct netdev_hw_addr *ha; |
|
rxcfg |= TSI108_EC_RXCFG_MFE | TSI108_EC_RXCFG_MC_HASH; |
|
|
|
memset(data->mc_hash, 0, sizeof(data->mc_hash)); |
|
|
|
netdev_for_each_mc_addr(ha, dev) { |
|
u32 hash, crc; |
|
|
|
crc = ether_crc(6, ha->addr); |
|
hash = crc >> 23; |
|
__set_bit(hash, &data->mc_hash[0]); |
|
} |
|
|
|
TSI_WRITE(TSI108_EC_HASHADDR, |
|
TSI108_EC_HASHADDR_AUTOINC | |
|
TSI108_EC_HASHADDR_MCAST); |
|
|
|
for (i = 0; i < 16; i++) { |
|
/* The manual says that the hardware may drop |
|
* back-to-back writes to the data register. |
|
*/ |
|
udelay(1); |
|
TSI_WRITE(TSI108_EC_HASHDATA, |
|
data->mc_hash[i]); |
|
} |
|
} |
|
|
|
out: |
|
TSI_WRITE(TSI108_EC_RXCFG, rxcfg); |
|
} |
|
|
|
static void tsi108_init_phy(struct net_device *dev) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
u32 i = 0; |
|
u16 phyval = 0; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&phy_lock, flags); |
|
|
|
tsi108_write_mii(data, MII_BMCR, BMCR_RESET); |
|
while (--i) { |
|
if(!(tsi108_read_mii(data, MII_BMCR) & BMCR_RESET)) |
|
break; |
|
udelay(10); |
|
} |
|
if (i == 0) |
|
printk(KERN_ERR "%s function time out\n", __func__); |
|
|
|
if (data->phy_type == TSI108_PHY_BCM54XX) { |
|
tsi108_write_mii(data, 0x09, 0x0300); |
|
tsi108_write_mii(data, 0x10, 0x1020); |
|
tsi108_write_mii(data, 0x1c, 0x8c00); |
|
} |
|
|
|
tsi108_write_mii(data, |
|
MII_BMCR, |
|
BMCR_ANENABLE | BMCR_ANRESTART); |
|
while (tsi108_read_mii(data, MII_BMCR) & BMCR_ANRESTART) |
|
cpu_relax(); |
|
|
|
/* Set G/MII mode and receive clock select in TBI control #2. The |
|
* second port won't work if this isn't done, even though we don't |
|
* use TBI mode. |
|
*/ |
|
|
|
tsi108_write_tbi(data, 0x11, 0x30); |
|
|
|
/* FIXME: It seems to take more than 2 back-to-back reads to the |
|
* PHY_STAT register before the link up status bit is set. |
|
*/ |
|
|
|
data->link_up = 0; |
|
|
|
while (!((phyval = tsi108_read_mii(data, MII_BMSR)) & |
|
BMSR_LSTATUS)) { |
|
if (i++ > (MII_READ_DELAY / 10)) { |
|
break; |
|
} |
|
spin_unlock_irqrestore(&phy_lock, flags); |
|
msleep(10); |
|
spin_lock_irqsave(&phy_lock, flags); |
|
} |
|
|
|
data->mii_if.supports_gmii = mii_check_gmii_support(&data->mii_if); |
|
printk(KERN_DEBUG "PHY_STAT reg contains %08x\n", phyval); |
|
data->phy_ok = 1; |
|
data->init_media = 1; |
|
spin_unlock_irqrestore(&phy_lock, flags); |
|
} |
|
|
|
static void tsi108_kill_phy(struct net_device *dev) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&phy_lock, flags); |
|
tsi108_write_mii(data, MII_BMCR, BMCR_PDOWN); |
|
data->phy_ok = 0; |
|
spin_unlock_irqrestore(&phy_lock, flags); |
|
} |
|
|
|
static int tsi108_open(struct net_device *dev) |
|
{ |
|
int i; |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
unsigned int rxring_size = TSI108_RXRING_LEN * sizeof(rx_desc); |
|
unsigned int txring_size = TSI108_TXRING_LEN * sizeof(tx_desc); |
|
|
|
i = request_irq(data->irq_num, tsi108_irq, 0, dev->name, dev); |
|
if (i != 0) { |
|
printk(KERN_ERR "tsi108_eth%d: Could not allocate IRQ%d.\n", |
|
data->id, data->irq_num); |
|
return i; |
|
} else { |
|
dev->irq = data->irq_num; |
|
printk(KERN_NOTICE |
|
"tsi108_open : Port %d Assigned IRQ %d to %s\n", |
|
data->id, dev->irq, dev->name); |
|
} |
|
|
|
data->rxring = dma_alloc_coherent(&data->pdev->dev, rxring_size, |
|
&data->rxdma, GFP_KERNEL); |
|
if (!data->rxring) |
|
return -ENOMEM; |
|
|
|
data->txring = dma_alloc_coherent(&data->pdev->dev, txring_size, |
|
&data->txdma, GFP_KERNEL); |
|
if (!data->txring) { |
|
dma_free_coherent(&data->pdev->dev, rxring_size, data->rxring, |
|
data->rxdma); |
|
return -ENOMEM; |
|
} |
|
|
|
for (i = 0; i < TSI108_RXRING_LEN; i++) { |
|
data->rxring[i].next0 = data->rxdma + (i + 1) * sizeof(rx_desc); |
|
data->rxring[i].blen = TSI108_RXBUF_SIZE; |
|
data->rxring[i].vlan = 0; |
|
} |
|
|
|
data->rxring[TSI108_RXRING_LEN - 1].next0 = data->rxdma; |
|
|
|
data->rxtail = 0; |
|
data->rxhead = 0; |
|
|
|
for (i = 0; i < TSI108_RXRING_LEN; i++) { |
|
struct sk_buff *skb; |
|
|
|
skb = netdev_alloc_skb_ip_align(dev, TSI108_RXBUF_SIZE); |
|
if (!skb) { |
|
/* Bah. No memory for now, but maybe we'll get |
|
* some more later. |
|
* For now, we'll live with the smaller ring. |
|
*/ |
|
printk(KERN_WARNING |
|
"%s: Could only allocate %d receive skb(s).\n", |
|
dev->name, i); |
|
data->rxhead = i; |
|
break; |
|
} |
|
|
|
data->rxskbs[i] = skb; |
|
data->rxring[i].buf0 = virt_to_phys(data->rxskbs[i]->data); |
|
data->rxring[i].misc = TSI108_RX_OWN | TSI108_RX_INT; |
|
} |
|
|
|
data->rxfree = i; |
|
TSI_WRITE(TSI108_EC_RXQ_PTRLOW, data->rxdma); |
|
|
|
for (i = 0; i < TSI108_TXRING_LEN; i++) { |
|
data->txring[i].next0 = data->txdma + (i + 1) * sizeof(tx_desc); |
|
data->txring[i].misc = 0; |
|
} |
|
|
|
data->txring[TSI108_TXRING_LEN - 1].next0 = data->txdma; |
|
data->txtail = 0; |
|
data->txhead = 0; |
|
data->txfree = TSI108_TXRING_LEN; |
|
TSI_WRITE(TSI108_EC_TXQ_PTRLOW, data->txdma); |
|
tsi108_init_phy(dev); |
|
|
|
napi_enable(&data->napi); |
|
|
|
timer_setup(&data->timer, tsi108_timed_checker, 0); |
|
mod_timer(&data->timer, jiffies + 1); |
|
|
|
tsi108_restart_rx(data, dev); |
|
|
|
TSI_WRITE(TSI108_EC_INTSTAT, ~0); |
|
|
|
TSI_WRITE(TSI108_EC_INTMASK, |
|
~(TSI108_INT_TXQUEUE0 | TSI108_INT_RXERROR | |
|
TSI108_INT_RXTHRESH | TSI108_INT_RXQUEUE0 | |
|
TSI108_INT_RXOVERRUN | TSI108_INT_RXWAIT | |
|
TSI108_INT_SFN | TSI108_INT_STATCARRY)); |
|
|
|
TSI_WRITE(TSI108_MAC_CFG1, |
|
TSI108_MAC_CFG1_RXEN | TSI108_MAC_CFG1_TXEN); |
|
netif_start_queue(dev); |
|
return 0; |
|
} |
|
|
|
static int tsi108_close(struct net_device *dev) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
|
|
netif_stop_queue(dev); |
|
napi_disable(&data->napi); |
|
|
|
del_timer_sync(&data->timer); |
|
|
|
tsi108_stop_ethernet(dev); |
|
tsi108_kill_phy(dev); |
|
TSI_WRITE(TSI108_EC_INTMASK, ~0); |
|
TSI_WRITE(TSI108_MAC_CFG1, 0); |
|
|
|
/* Check for any pending TX packets, and drop them. */ |
|
|
|
while (!data->txfree || data->txhead != data->txtail) { |
|
int tx = data->txtail; |
|
struct sk_buff *skb; |
|
skb = data->txskbs[tx]; |
|
data->txtail = (data->txtail + 1) % TSI108_TXRING_LEN; |
|
data->txfree++; |
|
dev_kfree_skb(skb); |
|
} |
|
|
|
free_irq(data->irq_num, dev); |
|
|
|
/* Discard the RX ring. */ |
|
|
|
while (data->rxfree) { |
|
int rx = data->rxtail; |
|
struct sk_buff *skb; |
|
|
|
skb = data->rxskbs[rx]; |
|
data->rxtail = (data->rxtail + 1) % TSI108_RXRING_LEN; |
|
data->rxfree--; |
|
dev_kfree_skb(skb); |
|
} |
|
|
|
dma_free_coherent(&data->pdev->dev, |
|
TSI108_RXRING_LEN * sizeof(rx_desc), |
|
data->rxring, data->rxdma); |
|
dma_free_coherent(&data->pdev->dev, |
|
TSI108_TXRING_LEN * sizeof(tx_desc), |
|
data->txring, data->txdma); |
|
|
|
return 0; |
|
} |
|
|
|
static void tsi108_init_mac(struct net_device *dev) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
|
|
TSI_WRITE(TSI108_MAC_CFG2, TSI108_MAC_CFG2_DFLT_PREAMBLE | |
|
TSI108_MAC_CFG2_PADCRC); |
|
|
|
TSI_WRITE(TSI108_EC_TXTHRESH, |
|
(192 << TSI108_EC_TXTHRESH_STARTFILL) | |
|
(192 << TSI108_EC_TXTHRESH_STOPFILL)); |
|
|
|
TSI_WRITE(TSI108_STAT_CARRYMASK1, |
|
~(TSI108_STAT_CARRY1_RXBYTES | |
|
TSI108_STAT_CARRY1_RXPKTS | |
|
TSI108_STAT_CARRY1_RXFCS | |
|
TSI108_STAT_CARRY1_RXMCAST | |
|
TSI108_STAT_CARRY1_RXALIGN | |
|
TSI108_STAT_CARRY1_RXLENGTH | |
|
TSI108_STAT_CARRY1_RXRUNT | |
|
TSI108_STAT_CARRY1_RXJUMBO | |
|
TSI108_STAT_CARRY1_RXFRAG | |
|
TSI108_STAT_CARRY1_RXJABBER | |
|
TSI108_STAT_CARRY1_RXDROP)); |
|
|
|
TSI_WRITE(TSI108_STAT_CARRYMASK2, |
|
~(TSI108_STAT_CARRY2_TXBYTES | |
|
TSI108_STAT_CARRY2_TXPKTS | |
|
TSI108_STAT_CARRY2_TXEXDEF | |
|
TSI108_STAT_CARRY2_TXEXCOL | |
|
TSI108_STAT_CARRY2_TXTCOL | |
|
TSI108_STAT_CARRY2_TXPAUSE)); |
|
|
|
TSI_WRITE(TSI108_EC_PORTCTRL, TSI108_EC_PORTCTRL_STATEN); |
|
TSI_WRITE(TSI108_MAC_CFG1, 0); |
|
|
|
TSI_WRITE(TSI108_EC_RXCFG, |
|
TSI108_EC_RXCFG_SE | TSI108_EC_RXCFG_BFE); |
|
|
|
TSI_WRITE(TSI108_EC_TXQ_CFG, TSI108_EC_TXQ_CFG_DESC_INT | |
|
TSI108_EC_TXQ_CFG_EOQ_OWN_INT | |
|
TSI108_EC_TXQ_CFG_WSWP | (TSI108_PBM_PORT << |
|
TSI108_EC_TXQ_CFG_SFNPORT)); |
|
|
|
TSI_WRITE(TSI108_EC_RXQ_CFG, TSI108_EC_RXQ_CFG_DESC_INT | |
|
TSI108_EC_RXQ_CFG_EOQ_OWN_INT | |
|
TSI108_EC_RXQ_CFG_WSWP | (TSI108_PBM_PORT << |
|
TSI108_EC_RXQ_CFG_SFNPORT)); |
|
|
|
TSI_WRITE(TSI108_EC_TXQ_BUFCFG, |
|
TSI108_EC_TXQ_BUFCFG_BURST256 | |
|
TSI108_EC_TXQ_BUFCFG_BSWP | (TSI108_PBM_PORT << |
|
TSI108_EC_TXQ_BUFCFG_SFNPORT)); |
|
|
|
TSI_WRITE(TSI108_EC_RXQ_BUFCFG, |
|
TSI108_EC_RXQ_BUFCFG_BURST256 | |
|
TSI108_EC_RXQ_BUFCFG_BSWP | (TSI108_PBM_PORT << |
|
TSI108_EC_RXQ_BUFCFG_SFNPORT)); |
|
|
|
TSI_WRITE(TSI108_EC_INTMASK, ~0); |
|
} |
|
|
|
static int tsi108_get_link_ksettings(struct net_device *dev, |
|
struct ethtool_link_ksettings *cmd) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&data->txlock, flags); |
|
mii_ethtool_get_link_ksettings(&data->mii_if, cmd); |
|
spin_unlock_irqrestore(&data->txlock, flags); |
|
|
|
return 0; |
|
} |
|
|
|
static int tsi108_set_link_ksettings(struct net_device *dev, |
|
const struct ethtool_link_ksettings *cmd) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
unsigned long flags; |
|
int rc; |
|
|
|
spin_lock_irqsave(&data->txlock, flags); |
|
rc = mii_ethtool_set_link_ksettings(&data->mii_if, cmd); |
|
spin_unlock_irqrestore(&data->txlock, flags); |
|
|
|
return rc; |
|
} |
|
|
|
static int tsi108_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
|
{ |
|
struct tsi108_prv_data *data = netdev_priv(dev); |
|
if (!netif_running(dev)) |
|
return -EINVAL; |
|
return generic_mii_ioctl(&data->mii_if, if_mii(rq), cmd, NULL); |
|
} |
|
|
|
static const struct ethtool_ops tsi108_ethtool_ops = { |
|
.get_link = ethtool_op_get_link, |
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.get_link_ksettings = tsi108_get_link_ksettings, |
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.set_link_ksettings = tsi108_set_link_ksettings, |
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}; |
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|
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static const struct net_device_ops tsi108_netdev_ops = { |
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.ndo_open = tsi108_open, |
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.ndo_stop = tsi108_close, |
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.ndo_start_xmit = tsi108_send_packet, |
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.ndo_set_rx_mode = tsi108_set_rx_mode, |
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.ndo_get_stats = tsi108_get_stats, |
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.ndo_do_ioctl = tsi108_do_ioctl, |
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.ndo_set_mac_address = tsi108_set_mac, |
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.ndo_validate_addr = eth_validate_addr, |
|
}; |
|
|
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static int |
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tsi108_init_one(struct platform_device *pdev) |
|
{ |
|
struct net_device *dev = NULL; |
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struct tsi108_prv_data *data = NULL; |
|
hw_info *einfo; |
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int err = 0; |
|
|
|
einfo = dev_get_platdata(&pdev->dev); |
|
|
|
if (NULL == einfo) { |
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printk(KERN_ERR "tsi-eth %d: Missing additional data!\n", |
|
pdev->id); |
|
return -ENODEV; |
|
} |
|
|
|
/* Create an ethernet device instance */ |
|
|
|
dev = alloc_etherdev(sizeof(struct tsi108_prv_data)); |
|
if (!dev) |
|
return -ENOMEM; |
|
|
|
printk("tsi108_eth%d: probe...\n", pdev->id); |
|
data = netdev_priv(dev); |
|
data->dev = dev; |
|
data->pdev = pdev; |
|
|
|
pr_debug("tsi108_eth%d:regs:phyresgs:phy:irq_num=0x%x:0x%x:0x%x:0x%x\n", |
|
pdev->id, einfo->regs, einfo->phyregs, |
|
einfo->phy, einfo->irq_num); |
|
|
|
data->regs = ioremap(einfo->regs, 0x400); |
|
if (NULL == data->regs) { |
|
err = -ENOMEM; |
|
goto regs_fail; |
|
} |
|
|
|
data->phyregs = ioremap(einfo->phyregs, 0x400); |
|
if (NULL == data->phyregs) { |
|
err = -ENOMEM; |
|
goto phyregs_fail; |
|
} |
|
/* MII setup */ |
|
data->mii_if.dev = dev; |
|
data->mii_if.mdio_read = tsi108_mdio_read; |
|
data->mii_if.mdio_write = tsi108_mdio_write; |
|
data->mii_if.phy_id = einfo->phy; |
|
data->mii_if.phy_id_mask = 0x1f; |
|
data->mii_if.reg_num_mask = 0x1f; |
|
|
|
data->phy = einfo->phy; |
|
data->phy_type = einfo->phy_type; |
|
data->irq_num = einfo->irq_num; |
|
data->id = pdev->id; |
|
netif_napi_add(dev, &data->napi, tsi108_poll, 64); |
|
dev->netdev_ops = &tsi108_netdev_ops; |
|
dev->ethtool_ops = &tsi108_ethtool_ops; |
|
|
|
/* Apparently, the Linux networking code won't use scatter-gather |
|
* if the hardware doesn't do checksums. However, it's faster |
|
* to checksum in place and use SG, as (among other reasons) |
|
* the cache won't be dirtied (which then has to be flushed |
|
* before DMA). The checksumming is done by the driver (via |
|
* a new function skb_csum_dev() in net/core/skbuff.c). |
|
*/ |
|
|
|
dev->features = NETIF_F_HIGHDMA; |
|
|
|
spin_lock_init(&data->txlock); |
|
spin_lock_init(&data->misclock); |
|
|
|
tsi108_reset_ether(data); |
|
tsi108_kill_phy(dev); |
|
|
|
if ((err = tsi108_get_mac(dev)) != 0) { |
|
printk(KERN_ERR "%s: Invalid MAC address. Please correct.\n", |
|
dev->name); |
|
goto register_fail; |
|
} |
|
|
|
tsi108_init_mac(dev); |
|
err = register_netdev(dev); |
|
if (err) { |
|
printk(KERN_ERR "%s: Cannot register net device, aborting.\n", |
|
dev->name); |
|
goto register_fail; |
|
} |
|
|
|
platform_set_drvdata(pdev, dev); |
|
printk(KERN_INFO "%s: Tsi108 Gigabit Ethernet, MAC: %pM\n", |
|
dev->name, dev->dev_addr); |
|
#ifdef DEBUG |
|
data->msg_enable = DEBUG; |
|
dump_eth_one(dev); |
|
#endif |
|
|
|
return 0; |
|
|
|
register_fail: |
|
iounmap(data->phyregs); |
|
|
|
phyregs_fail: |
|
iounmap(data->regs); |
|
|
|
regs_fail: |
|
free_netdev(dev); |
|
return err; |
|
} |
|
|
|
/* There's no way to either get interrupts from the PHY when |
|
* something changes, or to have the Tsi108 automatically communicate |
|
* with the PHY to reconfigure itself. |
|
* |
|
* Thus, we have to do it using a timer. |
|
*/ |
|
|
|
static void tsi108_timed_checker(struct timer_list *t) |
|
{ |
|
struct tsi108_prv_data *data = from_timer(data, t, timer); |
|
struct net_device *dev = data->dev; |
|
|
|
tsi108_check_phy(dev); |
|
tsi108_check_rxring(dev); |
|
mod_timer(&data->timer, jiffies + CHECK_PHY_INTERVAL); |
|
} |
|
|
|
static int tsi108_ether_remove(struct platform_device *pdev) |
|
{ |
|
struct net_device *dev = platform_get_drvdata(pdev); |
|
struct tsi108_prv_data *priv = netdev_priv(dev); |
|
|
|
unregister_netdev(dev); |
|
tsi108_stop_ethernet(dev); |
|
iounmap(priv->regs); |
|
iounmap(priv->phyregs); |
|
free_netdev(dev); |
|
|
|
return 0; |
|
} |
|
module_platform_driver(tsi_eth_driver); |
|
|
|
MODULE_AUTHOR("Tundra Semiconductor Corporation"); |
|
MODULE_DESCRIPTION("Tsi108 Gigabit Ethernet driver"); |
|
MODULE_LICENSE("GPL"); |
|
MODULE_ALIAS("platform:tsi-ethernet");
|
|
|