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965 lines
25 KiB
965 lines
25 KiB
/* ====================================================================== |
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* |
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* A PCMCIA ethernet driver for the 3com 3c589 card. |
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* |
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* Copyright (C) 1999 David A. Hinds -- [email protected] |
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* |
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* 3c589_cs.c 1.162 2001/10/13 00:08:50 |
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* |
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* The network driver code is based on Donald Becker's 3c589 code: |
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* |
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* Written 1994 by Donald Becker. |
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* Copyright 1993 United States Government as represented by the |
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* Director, National Security Agency. This software may be used and |
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* distributed according to the terms of the GNU General Public License, |
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* incorporated herein by reference. |
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* Donald Becker may be reached at [email protected] |
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* |
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* Updated for 2.5.x by Alan Cox <[email protected]> |
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* |
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* ====================================================================== |
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*/ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#define DRV_NAME "3c589_cs" |
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/ptrace.h> |
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#include <linux/slab.h> |
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#include <linux/string.h> |
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#include <linux/timer.h> |
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#include <linux/interrupt.h> |
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#include <linux/in.h> |
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#include <linux/delay.h> |
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#include <linux/ethtool.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/skbuff.h> |
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#include <linux/if_arp.h> |
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#include <linux/ioport.h> |
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#include <linux/bitops.h> |
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#include <linux/jiffies.h> |
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#include <linux/uaccess.h> |
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#include <linux/io.h> |
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#include <pcmcia/cistpl.h> |
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#include <pcmcia/cisreg.h> |
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#include <pcmcia/ciscode.h> |
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#include <pcmcia/ds.h> |
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/* To minimize the size of the driver source I only define operating |
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* constants if they are used several times. You'll need the manual |
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* if you want to understand driver details. |
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*/ |
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/* Offsets from base I/O address. */ |
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#define EL3_DATA 0x00 |
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#define EL3_TIMER 0x0a |
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#define EL3_CMD 0x0e |
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#define EL3_STATUS 0x0e |
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#define EEPROM_READ 0x0080 |
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#define EEPROM_BUSY 0x8000 |
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#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD) |
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/* The top five bits written to EL3_CMD are a command, the lower |
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* 11 bits are the parameter, if applicable. |
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*/ |
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enum c509cmd { |
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TotalReset = 0<<11, |
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SelectWindow = 1<<11, |
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StartCoax = 2<<11, |
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RxDisable = 3<<11, |
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RxEnable = 4<<11, |
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RxReset = 5<<11, |
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RxDiscard = 8<<11, |
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TxEnable = 9<<11, |
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TxDisable = 10<<11, |
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TxReset = 11<<11, |
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FakeIntr = 12<<11, |
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AckIntr = 13<<11, |
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SetIntrEnb = 14<<11, |
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SetStatusEnb = 15<<11, |
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SetRxFilter = 16<<11, |
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SetRxThreshold = 17<<11, |
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SetTxThreshold = 18<<11, |
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SetTxStart = 19<<11, |
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StatsEnable = 21<<11, |
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StatsDisable = 22<<11, |
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StopCoax = 23<<11 |
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}; |
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enum c509status { |
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IntLatch = 0x0001, |
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AdapterFailure = 0x0002, |
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TxComplete = 0x0004, |
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TxAvailable = 0x0008, |
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RxComplete = 0x0010, |
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RxEarly = 0x0020, |
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IntReq = 0x0040, |
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StatsFull = 0x0080, |
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CmdBusy = 0x1000 |
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}; |
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/* The SetRxFilter command accepts the following classes: */ |
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enum RxFilter { |
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RxStation = 1, |
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RxMulticast = 2, |
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RxBroadcast = 4, |
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RxProm = 8 |
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}; |
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/* Register window 1 offsets, the window used in normal operation. */ |
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#define TX_FIFO 0x00 |
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#define RX_FIFO 0x00 |
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#define RX_STATUS 0x08 |
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#define TX_STATUS 0x0B |
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#define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */ |
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#define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */ |
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#define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */ |
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#define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */ |
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#define MEDIA_LED 0x0001 /* Enable link light on 3C589E cards. */ |
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/* Time in jiffies before concluding Tx hung */ |
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#define TX_TIMEOUT ((400*HZ)/1000) |
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struct el3_private { |
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struct pcmcia_device *p_dev; |
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/* For transceiver monitoring */ |
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struct timer_list media; |
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u16 media_status; |
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u16 fast_poll; |
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unsigned long last_irq; |
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spinlock_t lock; |
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}; |
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static const char *if_names[] = { "auto", "10baseT", "10base2", "AUI" }; |
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/*====================================================================*/ |
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/* Module parameters */ |
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MODULE_AUTHOR("David Hinds <[email protected]>"); |
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MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver"); |
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MODULE_LICENSE("GPL"); |
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#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) |
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/* Special hook for setting if_port when module is loaded */ |
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INT_MODULE_PARM(if_port, 0); |
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/*====================================================================*/ |
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static int tc589_config(struct pcmcia_device *link); |
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static void tc589_release(struct pcmcia_device *link); |
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static u16 read_eeprom(unsigned int ioaddr, int index); |
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static void tc589_reset(struct net_device *dev); |
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static void media_check(struct timer_list *t); |
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static int el3_config(struct net_device *dev, struct ifmap *map); |
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static int el3_open(struct net_device *dev); |
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static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
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struct net_device *dev); |
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static irqreturn_t el3_interrupt(int irq, void *dev_id); |
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static void update_stats(struct net_device *dev); |
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static struct net_device_stats *el3_get_stats(struct net_device *dev); |
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static int el3_rx(struct net_device *dev); |
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static int el3_close(struct net_device *dev); |
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static void el3_tx_timeout(struct net_device *dev, unsigned int txqueue); |
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static void set_rx_mode(struct net_device *dev); |
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static void set_multicast_list(struct net_device *dev); |
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static const struct ethtool_ops netdev_ethtool_ops; |
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static void tc589_detach(struct pcmcia_device *p_dev); |
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static const struct net_device_ops el3_netdev_ops = { |
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.ndo_open = el3_open, |
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.ndo_stop = el3_close, |
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.ndo_start_xmit = el3_start_xmit, |
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.ndo_tx_timeout = el3_tx_timeout, |
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.ndo_set_config = el3_config, |
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.ndo_get_stats = el3_get_stats, |
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.ndo_set_rx_mode = set_multicast_list, |
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.ndo_set_mac_address = eth_mac_addr, |
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.ndo_validate_addr = eth_validate_addr, |
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}; |
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static int tc589_probe(struct pcmcia_device *link) |
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{ |
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struct el3_private *lp; |
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struct net_device *dev; |
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dev_dbg(&link->dev, "3c589_attach()\n"); |
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/* Create new ethernet device */ |
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dev = alloc_etherdev(sizeof(struct el3_private)); |
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if (!dev) |
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return -ENOMEM; |
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lp = netdev_priv(dev); |
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link->priv = dev; |
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lp->p_dev = link; |
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spin_lock_init(&lp->lock); |
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link->resource[0]->end = 16; |
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link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; |
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link->config_flags |= CONF_ENABLE_IRQ; |
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link->config_index = 1; |
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dev->netdev_ops = &el3_netdev_ops; |
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dev->watchdog_timeo = TX_TIMEOUT; |
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dev->ethtool_ops = &netdev_ethtool_ops; |
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return tc589_config(link); |
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} |
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static void tc589_detach(struct pcmcia_device *link) |
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{ |
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struct net_device *dev = link->priv; |
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dev_dbg(&link->dev, "3c589_detach\n"); |
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unregister_netdev(dev); |
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tc589_release(link); |
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free_netdev(dev); |
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} /* tc589_detach */ |
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static int tc589_config(struct pcmcia_device *link) |
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{ |
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struct net_device *dev = link->priv; |
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__be16 *phys_addr; |
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int ret, i, j, multi = 0, fifo; |
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unsigned int ioaddr; |
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static const char * const ram_split[] = {"5:3", "3:1", "1:1", "3:5"}; |
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u8 *buf; |
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size_t len; |
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dev_dbg(&link->dev, "3c589_config\n"); |
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phys_addr = (__be16 *)dev->dev_addr; |
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/* Is this a 3c562? */ |
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if (link->manf_id != MANFID_3COM) |
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dev_info(&link->dev, "hmmm, is this really a 3Com card??\n"); |
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multi = (link->card_id == PRODID_3COM_3C562); |
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link->io_lines = 16; |
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/* For the 3c562, the base address must be xx00-xx7f */ |
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for (i = j = 0; j < 0x400; j += 0x10) { |
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if (multi && (j & 0x80)) |
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continue; |
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link->resource[0]->start = j ^ 0x300; |
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i = pcmcia_request_io(link); |
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if (i == 0) |
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break; |
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} |
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if (i != 0) |
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goto failed; |
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ret = pcmcia_request_irq(link, el3_interrupt); |
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if (ret) |
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goto failed; |
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ret = pcmcia_enable_device(link); |
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if (ret) |
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goto failed; |
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dev->irq = link->irq; |
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dev->base_addr = link->resource[0]->start; |
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ioaddr = dev->base_addr; |
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EL3WINDOW(0); |
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/* The 3c589 has an extra EEPROM for configuration info, including |
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* the hardware address. The 3c562 puts the address in the CIS. |
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*/ |
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len = pcmcia_get_tuple(link, 0x88, &buf); |
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if (buf && len >= 6) { |
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for (i = 0; i < 3; i++) |
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phys_addr[i] = htons(le16_to_cpu(buf[i*2])); |
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kfree(buf); |
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} else { |
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kfree(buf); /* 0 < len < 6 */ |
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for (i = 0; i < 3; i++) |
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phys_addr[i] = htons(read_eeprom(ioaddr, i)); |
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if (phys_addr[0] == htons(0x6060)) { |
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dev_err(&link->dev, "IO port conflict at 0x%03lx-0x%03lx\n", |
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dev->base_addr, dev->base_addr+15); |
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goto failed; |
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} |
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} |
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/* The address and resource configuration register aren't loaded from |
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* the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. |
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*/ |
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outw(0x3f00, ioaddr + 8); |
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fifo = inl(ioaddr); |
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/* The if_port symbol can be set when the module is loaded */ |
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if ((if_port >= 0) && (if_port <= 3)) |
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dev->if_port = if_port; |
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else |
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dev_err(&link->dev, "invalid if_port requested\n"); |
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SET_NETDEV_DEV(dev, &link->dev); |
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if (register_netdev(dev) != 0) { |
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dev_err(&link->dev, "register_netdev() failed\n"); |
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goto failed; |
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} |
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netdev_info(dev, "3Com 3c%s, io %#3lx, irq %d, hw_addr %pM\n", |
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(multi ? "562" : "589"), dev->base_addr, dev->irq, |
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dev->dev_addr); |
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netdev_info(dev, " %dK FIFO split %s Rx:Tx, %s xcvr\n", |
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(fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3], |
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if_names[dev->if_port]); |
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return 0; |
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failed: |
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tc589_release(link); |
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return -ENODEV; |
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} /* tc589_config */ |
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static void tc589_release(struct pcmcia_device *link) |
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{ |
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pcmcia_disable_device(link); |
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} |
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static int tc589_suspend(struct pcmcia_device *link) |
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{ |
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struct net_device *dev = link->priv; |
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if (link->open) |
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netif_device_detach(dev); |
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return 0; |
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} |
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static int tc589_resume(struct pcmcia_device *link) |
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{ |
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struct net_device *dev = link->priv; |
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if (link->open) { |
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tc589_reset(dev); |
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netif_device_attach(dev); |
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} |
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return 0; |
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} |
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/*====================================================================*/ |
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/* Use this for commands that may take time to finish */ |
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static void tc589_wait_for_completion(struct net_device *dev, int cmd) |
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{ |
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int i = 100; |
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outw(cmd, dev->base_addr + EL3_CMD); |
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while (--i > 0) |
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if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) |
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break; |
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if (i == 0) |
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netdev_warn(dev, "command 0x%04x did not complete!\n", cmd); |
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} |
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/* Read a word from the EEPROM using the regular EEPROM access register. |
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* Assume that we are in register window zero. |
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*/ |
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static u16 read_eeprom(unsigned int ioaddr, int index) |
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{ |
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int i; |
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outw(EEPROM_READ + index, ioaddr + 10); |
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/* Reading the eeprom takes 162 us */ |
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for (i = 1620; i >= 0; i--) |
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if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0) |
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break; |
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return inw(ioaddr + 12); |
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} |
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/* Set transceiver type, perhaps to something other than what the user |
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* specified in dev->if_port. |
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*/ |
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static void tc589_set_xcvr(struct net_device *dev, int if_port) |
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{ |
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struct el3_private *lp = netdev_priv(dev); |
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unsigned int ioaddr = dev->base_addr; |
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EL3WINDOW(0); |
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switch (if_port) { |
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case 0: |
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case 1: |
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outw(0, ioaddr + 6); |
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break; |
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case 2: |
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outw(3<<14, ioaddr + 6); |
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break; |
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case 3: |
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outw(1<<14, ioaddr + 6); |
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break; |
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} |
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/* On PCMCIA, this just turns on the LED */ |
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outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD); |
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/* 10baseT interface, enable link beat and jabber check. */ |
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EL3WINDOW(4); |
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outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA); |
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EL3WINDOW(1); |
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if (if_port == 2) |
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lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000); |
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else |
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lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800); |
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} |
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static void dump_status(struct net_device *dev) |
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{ |
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unsigned int ioaddr = dev->base_addr; |
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EL3WINDOW(1); |
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netdev_info(dev, " irq status %04x, rx status %04x, tx status %02x tx free %04x\n", |
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inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS), |
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inb(ioaddr+TX_STATUS), inw(ioaddr+TX_FREE)); |
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EL3WINDOW(4); |
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netdev_info(dev, " diagnostics: fifo %04x net %04x ethernet %04x media %04x\n", |
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inw(ioaddr+0x04), inw(ioaddr+0x06), inw(ioaddr+0x08), |
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inw(ioaddr+0x0a)); |
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EL3WINDOW(1); |
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} |
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/* Reset and restore all of the 3c589 registers. */ |
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static void tc589_reset(struct net_device *dev) |
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{ |
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unsigned int ioaddr = dev->base_addr; |
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int i; |
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|
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EL3WINDOW(0); |
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outw(0x0001, ioaddr + 4); /* Activate board. */ |
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outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */ |
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|
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/* Set the station address in window 2. */ |
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EL3WINDOW(2); |
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for (i = 0; i < 6; i++) |
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outb(dev->dev_addr[i], ioaddr + i); |
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tc589_set_xcvr(dev, dev->if_port); |
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|
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/* Switch to the stats window, and clear all stats by reading. */ |
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outw(StatsDisable, ioaddr + EL3_CMD); |
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EL3WINDOW(6); |
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for (i = 0; i < 9; i++) |
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inb(ioaddr+i); |
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inw(ioaddr + 10); |
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inw(ioaddr + 12); |
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|
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/* Switch to register set 1 for normal use. */ |
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EL3WINDOW(1); |
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set_rx_mode(dev); |
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outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ |
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outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ |
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outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ |
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/* Allow status bits to be seen. */ |
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outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD); |
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/* Ack all pending events, and set active indicator mask. */ |
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outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, |
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ioaddr + EL3_CMD); |
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outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull |
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| AdapterFailure, ioaddr + EL3_CMD); |
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} |
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|
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static void netdev_get_drvinfo(struct net_device *dev, |
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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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snprintf(info->bus_info, sizeof(info->bus_info), |
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"PCMCIA 0x%lx", dev->base_addr); |
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} |
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|
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static const struct ethtool_ops netdev_ethtool_ops = { |
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.get_drvinfo = netdev_get_drvinfo, |
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}; |
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|
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static int el3_config(struct net_device *dev, struct ifmap *map) |
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{ |
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if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) { |
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if (map->port <= 3) { |
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dev->if_port = map->port; |
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netdev_info(dev, "switched to %s port\n", if_names[dev->if_port]); |
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tc589_set_xcvr(dev, dev->if_port); |
|
} else { |
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return -EINVAL; |
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} |
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} |
|
return 0; |
|
} |
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|
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static int el3_open(struct net_device *dev) |
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{ |
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struct el3_private *lp = netdev_priv(dev); |
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struct pcmcia_device *link = lp->p_dev; |
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|
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if (!pcmcia_dev_present(link)) |
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return -ENODEV; |
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|
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link->open++; |
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netif_start_queue(dev); |
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|
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tc589_reset(dev); |
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timer_setup(&lp->media, media_check, 0); |
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mod_timer(&lp->media, jiffies + HZ); |
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|
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dev_dbg(&link->dev, "%s: opened, status %4.4x.\n", |
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dev->name, inw(dev->base_addr + EL3_STATUS)); |
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|
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return 0; |
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} |
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|
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static void el3_tx_timeout(struct net_device *dev, unsigned int txqueue) |
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{ |
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unsigned int ioaddr = dev->base_addr; |
|
|
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netdev_warn(dev, "Transmit timed out!\n"); |
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dump_status(dev); |
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dev->stats.tx_errors++; |
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netif_trans_update(dev); /* prevent tx timeout */ |
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/* Issue TX_RESET and TX_START commands. */ |
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tc589_wait_for_completion(dev, TxReset); |
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outw(TxEnable, ioaddr + EL3_CMD); |
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netif_wake_queue(dev); |
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} |
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|
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static void pop_tx_status(struct net_device *dev) |
|
{ |
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unsigned int ioaddr = dev->base_addr; |
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int i; |
|
|
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/* Clear the Tx status stack. */ |
|
for (i = 32; i > 0; i--) { |
|
u_char tx_status = inb(ioaddr + TX_STATUS); |
|
if (!(tx_status & 0x84)) |
|
break; |
|
/* reset transmitter on jabber error or underrun */ |
|
if (tx_status & 0x30) |
|
tc589_wait_for_completion(dev, TxReset); |
|
if (tx_status & 0x38) { |
|
netdev_dbg(dev, "transmit error: status 0x%02x\n", tx_status); |
|
outw(TxEnable, ioaddr + EL3_CMD); |
|
dev->stats.tx_aborted_errors++; |
|
} |
|
outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */ |
|
} |
|
} |
|
|
|
static netdev_tx_t el3_start_xmit(struct sk_buff *skb, |
|
struct net_device *dev) |
|
{ |
|
unsigned int ioaddr = dev->base_addr; |
|
struct el3_private *priv = netdev_priv(dev); |
|
unsigned long flags; |
|
|
|
netdev_dbg(dev, "el3_start_xmit(length = %ld) called, status %4.4x.\n", |
|
(long)skb->len, inw(ioaddr + EL3_STATUS)); |
|
|
|
spin_lock_irqsave(&priv->lock, flags); |
|
|
|
dev->stats.tx_bytes += skb->len; |
|
|
|
/* Put out the doubleword header... */ |
|
outw(skb->len, ioaddr + TX_FIFO); |
|
outw(0x00, ioaddr + TX_FIFO); |
|
/* ... and the packet rounded to a doubleword. */ |
|
outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2); |
|
|
|
if (inw(ioaddr + TX_FREE) <= 1536) { |
|
netif_stop_queue(dev); |
|
/* Interrupt us when the FIFO has room for max-sized packet. */ |
|
outw(SetTxThreshold + 1536, ioaddr + EL3_CMD); |
|
} |
|
|
|
pop_tx_status(dev); |
|
spin_unlock_irqrestore(&priv->lock, flags); |
|
dev_kfree_skb(skb); |
|
|
|
return NETDEV_TX_OK; |
|
} |
|
|
|
/* The EL3 interrupt handler. */ |
|
static irqreturn_t el3_interrupt(int irq, void *dev_id) |
|
{ |
|
struct net_device *dev = (struct net_device *) dev_id; |
|
struct el3_private *lp = netdev_priv(dev); |
|
unsigned int ioaddr; |
|
__u16 status; |
|
int i = 0, handled = 1; |
|
|
|
if (!netif_device_present(dev)) |
|
return IRQ_NONE; |
|
|
|
ioaddr = dev->base_addr; |
|
|
|
netdev_dbg(dev, "interrupt, status %4.4x.\n", inw(ioaddr + EL3_STATUS)); |
|
|
|
spin_lock(&lp->lock); |
|
while ((status = inw(ioaddr + EL3_STATUS)) & |
|
(IntLatch | RxComplete | StatsFull)) { |
|
if ((status & 0xe000) != 0x2000) { |
|
netdev_dbg(dev, "interrupt from dead card\n"); |
|
handled = 0; |
|
break; |
|
} |
|
if (status & RxComplete) |
|
el3_rx(dev); |
|
if (status & TxAvailable) { |
|
netdev_dbg(dev, " TX room bit was handled.\n"); |
|
/* There's room in the FIFO for a full-sized packet. */ |
|
outw(AckIntr | TxAvailable, ioaddr + EL3_CMD); |
|
netif_wake_queue(dev); |
|
} |
|
if (status & TxComplete) |
|
pop_tx_status(dev); |
|
if (status & (AdapterFailure | RxEarly | StatsFull)) { |
|
/* Handle all uncommon interrupts. */ |
|
if (status & StatsFull) /* Empty statistics. */ |
|
update_stats(dev); |
|
if (status & RxEarly) { |
|
/* Rx early is unused. */ |
|
el3_rx(dev); |
|
outw(AckIntr | RxEarly, ioaddr + EL3_CMD); |
|
} |
|
if (status & AdapterFailure) { |
|
u16 fifo_diag; |
|
EL3WINDOW(4); |
|
fifo_diag = inw(ioaddr + 4); |
|
EL3WINDOW(1); |
|
netdev_warn(dev, "adapter failure, FIFO diagnostic register %04x.\n", |
|
fifo_diag); |
|
if (fifo_diag & 0x0400) { |
|
/* Tx overrun */ |
|
tc589_wait_for_completion(dev, TxReset); |
|
outw(TxEnable, ioaddr + EL3_CMD); |
|
} |
|
if (fifo_diag & 0x2000) { |
|
/* Rx underrun */ |
|
tc589_wait_for_completion(dev, RxReset); |
|
set_rx_mode(dev); |
|
outw(RxEnable, ioaddr + EL3_CMD); |
|
} |
|
outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD); |
|
} |
|
} |
|
if (++i > 10) { |
|
netdev_err(dev, "infinite loop in interrupt, status %4.4x.\n", |
|
status); |
|
/* Clear all interrupts */ |
|
outw(AckIntr | 0xFF, ioaddr + EL3_CMD); |
|
break; |
|
} |
|
/* Acknowledge the IRQ. */ |
|
outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); |
|
} |
|
lp->last_irq = jiffies; |
|
spin_unlock(&lp->lock); |
|
netdev_dbg(dev, "exiting interrupt, status %4.4x.\n", |
|
inw(ioaddr + EL3_STATUS)); |
|
return IRQ_RETVAL(handled); |
|
} |
|
|
|
static void media_check(struct timer_list *t) |
|
{ |
|
struct el3_private *lp = from_timer(lp, t, media); |
|
struct net_device *dev = lp->p_dev->priv; |
|
unsigned int ioaddr = dev->base_addr; |
|
u16 media, errs; |
|
unsigned long flags; |
|
|
|
if (!netif_device_present(dev)) |
|
goto reschedule; |
|
|
|
/* Check for pending interrupt with expired latency timer: with |
|
* this, we can limp along even if the interrupt is blocked |
|
*/ |
|
if ((inw(ioaddr + EL3_STATUS) & IntLatch) && |
|
(inb(ioaddr + EL3_TIMER) == 0xff)) { |
|
if (!lp->fast_poll) |
|
netdev_warn(dev, "interrupt(s) dropped!\n"); |
|
|
|
local_irq_save(flags); |
|
el3_interrupt(dev->irq, dev); |
|
local_irq_restore(flags); |
|
|
|
lp->fast_poll = HZ; |
|
} |
|
if (lp->fast_poll) { |
|
lp->fast_poll--; |
|
lp->media.expires = jiffies + HZ/100; |
|
add_timer(&lp->media); |
|
return; |
|
} |
|
|
|
/* lp->lock guards the EL3 window. Window should always be 1 except |
|
* when the lock is held |
|
*/ |
|
|
|
spin_lock_irqsave(&lp->lock, flags); |
|
EL3WINDOW(4); |
|
media = inw(ioaddr+WN4_MEDIA) & 0xc810; |
|
|
|
/* Ignore collisions unless we've had no irq's recently */ |
|
if (time_before(jiffies, lp->last_irq + HZ)) { |
|
media &= ~0x0010; |
|
} else { |
|
/* Try harder to detect carrier errors */ |
|
EL3WINDOW(6); |
|
outw(StatsDisable, ioaddr + EL3_CMD); |
|
errs = inb(ioaddr + 0); |
|
outw(StatsEnable, ioaddr + EL3_CMD); |
|
dev->stats.tx_carrier_errors += errs; |
|
if (errs || (lp->media_status & 0x0010)) |
|
media |= 0x0010; |
|
} |
|
|
|
if (media != lp->media_status) { |
|
if ((media & lp->media_status & 0x8000) && |
|
((lp->media_status ^ media) & 0x0800)) |
|
netdev_info(dev, "%s link beat\n", |
|
(lp->media_status & 0x0800 ? "lost" : "found")); |
|
else if ((media & lp->media_status & 0x4000) && |
|
((lp->media_status ^ media) & 0x0010)) |
|
netdev_info(dev, "coax cable %s\n", |
|
(lp->media_status & 0x0010 ? "ok" : "problem")); |
|
if (dev->if_port == 0) { |
|
if (media & 0x8000) { |
|
if (media & 0x0800) |
|
netdev_info(dev, "flipped to 10baseT\n"); |
|
else |
|
tc589_set_xcvr(dev, 2); |
|
} else if (media & 0x4000) { |
|
if (media & 0x0010) |
|
tc589_set_xcvr(dev, 1); |
|
else |
|
netdev_info(dev, "flipped to 10base2\n"); |
|
} |
|
} |
|
lp->media_status = media; |
|
} |
|
|
|
EL3WINDOW(1); |
|
spin_unlock_irqrestore(&lp->lock, flags); |
|
|
|
reschedule: |
|
lp->media.expires = jiffies + HZ; |
|
add_timer(&lp->media); |
|
} |
|
|
|
static struct net_device_stats *el3_get_stats(struct net_device *dev) |
|
{ |
|
struct el3_private *lp = netdev_priv(dev); |
|
unsigned long flags; |
|
struct pcmcia_device *link = lp->p_dev; |
|
|
|
if (pcmcia_dev_present(link)) { |
|
spin_lock_irqsave(&lp->lock, flags); |
|
update_stats(dev); |
|
spin_unlock_irqrestore(&lp->lock, flags); |
|
} |
|
return &dev->stats; |
|
} |
|
|
|
/* Update statistics. We change to register window 6, so this should be run |
|
* single-threaded if the device is active. This is expected to be a rare |
|
* operation, and it's simpler for the rest of the driver to assume that |
|
* window 1 is always valid rather than use a special window-state variable. |
|
* |
|
* Caller must hold the lock for this |
|
*/ |
|
|
|
static void update_stats(struct net_device *dev) |
|
{ |
|
unsigned int ioaddr = dev->base_addr; |
|
|
|
netdev_dbg(dev, "updating the statistics.\n"); |
|
/* Turn off statistics updates while reading. */ |
|
outw(StatsDisable, ioaddr + EL3_CMD); |
|
/* Switch to the stats window, and read everything. */ |
|
EL3WINDOW(6); |
|
dev->stats.tx_carrier_errors += inb(ioaddr + 0); |
|
dev->stats.tx_heartbeat_errors += inb(ioaddr + 1); |
|
/* Multiple collisions. */ |
|
inb(ioaddr + 2); |
|
dev->stats.collisions += inb(ioaddr + 3); |
|
dev->stats.tx_window_errors += inb(ioaddr + 4); |
|
dev->stats.rx_fifo_errors += inb(ioaddr + 5); |
|
dev->stats.tx_packets += inb(ioaddr + 6); |
|
/* Rx packets */ |
|
inb(ioaddr + 7); |
|
/* Tx deferrals */ |
|
inb(ioaddr + 8); |
|
/* Rx octets */ |
|
inw(ioaddr + 10); |
|
/* Tx octets */ |
|
inw(ioaddr + 12); |
|
|
|
/* Back to window 1, and turn statistics back on. */ |
|
EL3WINDOW(1); |
|
outw(StatsEnable, ioaddr + EL3_CMD); |
|
} |
|
|
|
static int el3_rx(struct net_device *dev) |
|
{ |
|
unsigned int ioaddr = dev->base_addr; |
|
int worklimit = 32; |
|
short rx_status; |
|
|
|
netdev_dbg(dev, "in rx_packet(), status %4.4x, rx_status %4.4x.\n", |
|
inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS)); |
|
while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) && |
|
worklimit > 0) { |
|
worklimit--; |
|
if (rx_status & 0x4000) { /* Error, update stats. */ |
|
short error = rx_status & 0x3800; |
|
dev->stats.rx_errors++; |
|
switch (error) { |
|
case 0x0000: |
|
dev->stats.rx_over_errors++; |
|
break; |
|
case 0x0800: |
|
dev->stats.rx_length_errors++; |
|
break; |
|
case 0x1000: |
|
dev->stats.rx_frame_errors++; |
|
break; |
|
case 0x1800: |
|
dev->stats.rx_length_errors++; |
|
break; |
|
case 0x2000: |
|
dev->stats.rx_frame_errors++; |
|
break; |
|
case 0x2800: |
|
dev->stats.rx_crc_errors++; |
|
break; |
|
} |
|
} else { |
|
short pkt_len = rx_status & 0x7ff; |
|
struct sk_buff *skb; |
|
|
|
skb = netdev_alloc_skb(dev, pkt_len + 5); |
|
|
|
netdev_dbg(dev, " Receiving packet size %d status %4.4x.\n", |
|
pkt_len, rx_status); |
|
if (skb != NULL) { |
|
skb_reserve(skb, 2); |
|
insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len), |
|
(pkt_len+3)>>2); |
|
skb->protocol = eth_type_trans(skb, dev); |
|
netif_rx(skb); |
|
dev->stats.rx_packets++; |
|
dev->stats.rx_bytes += pkt_len; |
|
} else { |
|
netdev_dbg(dev, "couldn't allocate a sk_buff of size %d.\n", |
|
pkt_len); |
|
dev->stats.rx_dropped++; |
|
} |
|
} |
|
/* Pop the top of the Rx FIFO */ |
|
tc589_wait_for_completion(dev, RxDiscard); |
|
} |
|
if (worklimit == 0) |
|
netdev_warn(dev, "too much work in el3_rx!\n"); |
|
return 0; |
|
} |
|
|
|
static void set_rx_mode(struct net_device *dev) |
|
{ |
|
unsigned int ioaddr = dev->base_addr; |
|
u16 opts = SetRxFilter | RxStation | RxBroadcast; |
|
|
|
if (dev->flags & IFF_PROMISC) |
|
opts |= RxMulticast | RxProm; |
|
else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI)) |
|
opts |= RxMulticast; |
|
outw(opts, ioaddr + EL3_CMD); |
|
} |
|
|
|
static void set_multicast_list(struct net_device *dev) |
|
{ |
|
struct el3_private *priv = netdev_priv(dev); |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&priv->lock, flags); |
|
set_rx_mode(dev); |
|
spin_unlock_irqrestore(&priv->lock, flags); |
|
} |
|
|
|
static int el3_close(struct net_device *dev) |
|
{ |
|
struct el3_private *lp = netdev_priv(dev); |
|
struct pcmcia_device *link = lp->p_dev; |
|
unsigned int ioaddr = dev->base_addr; |
|
|
|
dev_dbg(&link->dev, "%s: shutting down ethercard.\n", dev->name); |
|
|
|
if (pcmcia_dev_present(link)) { |
|
/* Turn off statistics ASAP. We update dev->stats below. */ |
|
outw(StatsDisable, ioaddr + EL3_CMD); |
|
|
|
/* Disable the receiver and transmitter. */ |
|
outw(RxDisable, ioaddr + EL3_CMD); |
|
outw(TxDisable, ioaddr + EL3_CMD); |
|
|
|
if (dev->if_port == 2) |
|
/* Turn off thinnet power. Green! */ |
|
outw(StopCoax, ioaddr + EL3_CMD); |
|
else if (dev->if_port == 1) { |
|
/* Disable link beat and jabber */ |
|
EL3WINDOW(4); |
|
outw(0, ioaddr + WN4_MEDIA); |
|
} |
|
|
|
/* Switching back to window 0 disables the IRQ. */ |
|
EL3WINDOW(0); |
|
/* But we explicitly zero the IRQ line select anyway. */ |
|
outw(0x0f00, ioaddr + WN0_IRQ); |
|
|
|
/* Check if the card still exists */ |
|
if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000) |
|
update_stats(dev); |
|
} |
|
|
|
link->open--; |
|
netif_stop_queue(dev); |
|
del_timer_sync(&lp->media); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct pcmcia_device_id tc589_ids[] = { |
|
PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562), |
|
PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77), |
|
PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589), |
|
PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202), |
|
PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "cis/3CXEM556.cis"), |
|
PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "cis/3CXEM556.cis"), |
|
PCMCIA_DEVICE_NULL, |
|
}; |
|
MODULE_DEVICE_TABLE(pcmcia, tc589_ids); |
|
|
|
static struct pcmcia_driver tc589_driver = { |
|
.owner = THIS_MODULE, |
|
.name = "3c589_cs", |
|
.probe = tc589_probe, |
|
.remove = tc589_detach, |
|
.id_table = tc589_ids, |
|
.suspend = tc589_suspend, |
|
.resume = tc589_resume, |
|
}; |
|
module_pcmcia_driver(tc589_driver);
|
|
|