Newer
Older
/* 3c509.c: A 3c509 EtherLink3 ethernet driver for linux. */
/*
Written 1993-2000 by Donald Becker.
Copyright 1994-2000 by Donald Becker.
Copyright 1993 United States Government as represented by the
Director, National Security Agency. This software may be used and
distributed according to the terms of the GNU General Public License,
incorporated herein by reference.
This driver is for the 3Com EtherLinkIII series.
The author may be reached as becker@scyld.com, or C/O
Scyld Computing Corporation
410 Severn Ave., Suite 210
Annapolis MD 21403
Known limitations:
Because of the way 3c509 ISA detection works it's difficult to predict
a priori which of several ISA-mode cards will be detected first.
This driver does not use predictive interrupt mode, resulting in higher
packet latency but lower overhead. If interrupts are disabled for an
unusually long time it could also result in missed packets, but in
practice this rarely happens.
FIXES:
Alan Cox: Removed the 'Unexpected interrupt' bug.
Michael Meskes: Upgraded to Donald Becker's version 1.07.
Alan Cox: Increased the eeprom delay. Regardless of
what the docs say some people definitely
get problems with lower (but in card spec)
delays
v1.10 4/21/97 Fixed module code so that multiple cards may be detected,
other cleanups. -djb
Andrea Arcangeli: Upgraded to Donald Becker's version 1.12.
Rick Payne: Fixed SMP race condition
v1.13 9/8/97 Made 'max_interrupt_work' an insmod-settable variable -djb
v1.14 10/15/97 Avoided waiting..discard message for fast machines -djb
v1.15 1/31/98 Faster recovery for Tx errors. -djb
v1.16 2/3/98 Different ID port handling to avoid sound cards. -djb
- Avoid bogus detect of 3c590's (Andrzej Krzysztofowicz)
- Reviewed against 1.18 from scyld.com
v1.18a 17Nov2001 Jeff Garzik <jgarzik@pobox.com>
- ethtool support
v1.18b 1Mar2002 Zwane Mwaikambo <zwane@commfireservices.com>
- Power Management support
v1.18c 1Mar2002 David Ruggiero <jdr@farfalle.com>
- Full duplex support
v1.19 16Oct2002 Zwane Mwaikambo <zwane@linuxpower.ca>
- Additional ethtool features
v1.19a 28Oct2002 Davud Ruggiero <jdr@farfalle.com>
- Increase *read_eeprom udelay to workaround oops with 2 cards.
v1.19b 08Nov2002 Marc Zyngier <maz@wild-wind.fr.eu.org>
- Introduce driver model for EISA cards.
v1.20 04Feb2008 Ondrej Zary <linux@rainbow-software.org>
- convert to isa_driver and pnp_driver and some cleanups
#define DRV_VERSION "1.20"
#define DRV_RELDATE "04Feb2008"
/* A few values that may be tweaked. */
/* Time in jiffies before concluding the transmitter is hung. */
#define TX_TIMEOUT (400*HZ/1000)
#include <linux/module.h>
#include <linux/mca.h>
#include <linux/isa.h>
#include <linux/pnp.h>
#include <linux/string.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/in.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/pm.h>
#include <linux/skbuff.h>
#include <linux/delay.h> /* for udelay() */
#include <linux/spinlock.h>
#include <linux/ethtool.h>
#include <linux/device.h>
#include <linux/eisa.h>
#include <linux/bitops.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/irq.h>
static char version[] __devinitdata = DRV_NAME ".c:" DRV_VERSION " " DRV_RELDATE " becker@scyld.com\n";
#ifdef EL3_DEBUG
static int el3_debug = EL3_DEBUG;
#else
static int el3_debug = 2;
#endif
/* Used to do a global count of all the cards in the system. Must be
* a global variable so that the mca/eisa probe routines can increment
* it */
static int el3_cards = 0;
/* To minimize the size of the driver source I only define operating
constants if they are used several times. You'll need the manual
anyway if you want to understand driver details. */
/* Offsets from base I/O address. */
#define EL3_DATA 0x00
#define EL3_CMD 0x0e
#define EL3_STATUS 0x0e
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
#define EL3_IO_EXTENT 16
#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
/* The top five bits written to EL3_CMD are a command, the lower
11 bits are the parameter, if applicable. */
enum c509cmd {
TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
StatsDisable = 22<<11, StopCoax = 23<<11, PowerUp = 27<<11,
PowerDown = 28<<11, PowerAuto = 29<<11};
enum c509status {
IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000, };
/* The SetRxFilter command accepts the following classes: */
enum RxFilter {
RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 };
/* Register window 1 offsets, the window used in normal operation. */
#define TX_FIFO 0x00
#define RX_FIFO 0x00
#define RX_STATUS 0x08
#define TX_STATUS 0x0B
#define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
#define WN0_CONF_CTRL 0x04 /* Window 0: Configuration control register */
#define WN0_ADDR_CONF 0x06 /* Window 0: Address configuration register */
#define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
#define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
#define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
#define WN4_NETDIAG 0x06 /* Window 4: Net diagnostic */
#define FD_ENABLE 0x8000 /* Enable full-duplex ("external loopback") */
/*
* Must be a power of two (we use a binary and in the
* circular queue)
*/
#define SKB_QUEUE_SIZE 64
enum el3_cardtype { EL3_ISA, EL3_PNP, EL3_MCA, EL3_EISA };
struct el3_private {
spinlock_t lock;
/* skb send-queue */
int head, size;
struct sk_buff *queue[SKB_QUEUE_SIZE];
static int id_port;
static int current_tag;
static struct net_device *el3_devs[EL3_MAX_CARDS];
/* Parameters that may be passed into the module. */
static int debug = -1;
static int irq[] = {-1, -1, -1, -1, -1, -1, -1, -1};
/* Maximum events (Rx packets, etc.) to handle at each interrupt. */
static int max_interrupt_work = 10;
#ifdef CONFIG_PNP
static int nopnp;
#endif
static int __devinit el3_common_init(struct net_device *dev);
static void el3_common_remove(struct net_device *dev);
static ushort id_read_eeprom(int index);
static ushort read_eeprom(int ioaddr, int index);
static int el3_open(struct net_device *dev);
static netdev_tx_t el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
static irqreturn_t el3_interrupt(int irq, void *dev_id);
static void update_stats(struct net_device *dev);
static struct net_device_stats *el3_get_stats(struct net_device *dev);
static int el3_rx(struct net_device *dev);
static int el3_close(struct net_device *dev);
static void set_multicast_list(struct net_device *dev);
static void el3_tx_timeout (struct net_device *dev);
Loading
Loading full blame...