936 lines
26 KiB
C
936 lines
26 KiB
C
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/* at1700.c: A network device driver for the Allied Telesis AT1700.
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Written 1993-98 by Donald Becker.
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Copyright 1993 United States Government as represented by the
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Director, National Security Agency.
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This software may be used and distributed according to the terms
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of the GNU General Public License, incorporated herein by reference.
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The author may be reached as becker@scyld.com, or C/O
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Scyld Computing Corporation
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410 Severn Ave., Suite 210
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Annapolis MD 21403
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This is a device driver for the Allied Telesis AT1700, and
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Fujitsu FMV-181/182/181A/182A/183/184/183A/184A, which are
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straight-forward Fujitsu MB86965 implementations.
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Modification for Fujitsu FMV-18X cards is done by Yutaka Tamiya
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(tamy@flab.fujitsu.co.jp).
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Sources:
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The Fujitsu MB86965 datasheet.
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After the initial version of this driver was written Gerry Sawkins of
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ATI provided their EEPROM configuration code header file.
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Thanks to NIIBE Yutaka <gniibe@mri.co.jp> for bug fixes.
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MCA bus (AT1720) support by Rene Schmit <rene@bss.lu>
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Bugs:
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The MB86965 has a design flaw that makes all probes unreliable. Not
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only is it difficult to detect, it also moves around in I/O space in
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response to inb()s from other device probes!
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*/
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#include <linux/config.h>
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#include <linux/errno.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/mca-legacy.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/fcntl.h>
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#include <linux/interrupt.h>
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#include <linux/ioport.h>
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#include <linux/in.h>
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#include <linux/skbuff.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <linux/crc32.h>
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#include <linux/bitops.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#include <asm/dma.h>
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static char version[] __initdata =
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"at1700.c:v1.15 4/7/98 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
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#define DRV_NAME "at1700"
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/* Tunable parameters. */
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/* When to switch from the 64-entry multicast filter to Rx-all-multicast. */
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#define MC_FILTERBREAK 64
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/* These unusual address orders are used to verify the CONFIG register. */
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static int fmv18x_probe_list[] __initdata = {
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0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x300, 0x340, 0
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};
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/*
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* ISA
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*/
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static unsigned at1700_probe_list[] __initdata = {
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0x260, 0x280, 0x2a0, 0x240, 0x340, 0x320, 0x380, 0x300, 0
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};
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/*
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* MCA
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*/
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#ifdef CONFIG_MCA_LEGACY
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static int at1700_ioaddr_pattern[] __initdata = {
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0x00, 0x04, 0x01, 0x05, 0x02, 0x06, 0x03, 0x07
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};
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static int at1700_mca_probe_list[] __initdata = {
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0x400, 0x1400, 0x2400, 0x3400, 0x4400, 0x5400, 0x6400, 0x7400, 0
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};
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static int at1700_irq_pattern[] __initdata = {
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0x00, 0x00, 0x00, 0x30, 0x70, 0xb0, 0x00, 0x00,
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0x00, 0xf0, 0x34, 0x74, 0xb4, 0x00, 0x00, 0xf4, 0x00
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};
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#endif
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/* use 0 for production, 1 for verification, >2 for debug */
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#ifndef NET_DEBUG
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#define NET_DEBUG 1
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#endif
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static unsigned int net_debug = NET_DEBUG;
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typedef unsigned char uchar;
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/* Information that need to be kept for each board. */
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struct net_local {
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struct net_device_stats stats;
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spinlock_t lock;
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unsigned char mc_filter[8];
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uint jumpered:1; /* Set iff the board has jumper config. */
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uint tx_started:1; /* Packets are on the Tx queue. */
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uint tx_queue_ready:1; /* Tx queue is ready to be sent. */
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uint rx_started:1; /* Packets are Rxing. */
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uchar tx_queue; /* Number of packet on the Tx queue. */
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char mca_slot; /* -1 means ISA */
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ushort tx_queue_len; /* Current length of the Tx queue. */
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};
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/* Offsets from the base address. */
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#define STATUS 0
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#define TX_STATUS 0
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#define RX_STATUS 1
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#define TX_INTR 2 /* Bit-mapped interrupt enable registers. */
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#define RX_INTR 3
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#define TX_MODE 4
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#define RX_MODE 5
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#define CONFIG_0 6 /* Misc. configuration settings. */
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#define CONFIG_1 7
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/* Run-time register bank 2 definitions. */
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#define DATAPORT 8 /* Word-wide DMA or programmed-I/O dataport. */
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#define TX_START 10
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#define COL16CNTL 11 /* Controll Reg for 16 collisions */
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#define MODE13 13
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#define RX_CTRL 14
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/* Configuration registers only on the '865A/B chips. */
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#define EEPROM_Ctrl 16
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#define EEPROM_Data 17
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#define CARDSTATUS 16 /* FMV-18x Card Status */
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#define CARDSTATUS1 17 /* FMV-18x Card Status */
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#define IOCONFIG 18 /* Either read the jumper, or move the I/O. */
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#define IOCONFIG1 19
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#define SAPROM 20 /* The station address PROM, if no EEPROM. */
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#define MODE24 24
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#define RESET 31 /* Write to reset some parts of the chip. */
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#define AT1700_IO_EXTENT 32
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#define PORT_OFFSET(o) (o)
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#define TX_TIMEOUT 10
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/* Index to functions, as function prototypes. */
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static int at1700_probe1(struct net_device *dev, int ioaddr);
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static int read_eeprom(long ioaddr, int location);
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static int net_open(struct net_device *dev);
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static int net_send_packet(struct sk_buff *skb, struct net_device *dev);
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static irqreturn_t net_interrupt(int irq, void *dev_id, struct pt_regs *regs);
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static void net_rx(struct net_device *dev);
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static int net_close(struct net_device *dev);
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static struct net_device_stats *net_get_stats(struct net_device *dev);
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static void set_rx_mode(struct net_device *dev);
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static void net_tx_timeout (struct net_device *dev);
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#ifdef CONFIG_MCA_LEGACY
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struct at1720_mca_adapters_struct {
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char* name;
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int id;
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};
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/* rEnE : maybe there are others I don't know off... */
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static struct at1720_mca_adapters_struct at1720_mca_adapters[] __initdata = {
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{ "Allied Telesys AT1720AT", 0x6410 },
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{ "Allied Telesys AT1720BT", 0x6413 },
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{ "Allied Telesys AT1720T", 0x6416 },
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{ NULL, 0 },
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};
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#endif
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/* Check for a network adaptor of this type, and return '0' iff one exists.
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If dev->base_addr == 0, probe all likely locations.
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If dev->base_addr == 1, always return failure.
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If dev->base_addr == 2, allocate space for the device and return success
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(detachable devices only).
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*/
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static int io = 0x260;
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static int irq;
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static void cleanup_card(struct net_device *dev)
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{
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#ifdef CONFIG_MCA_LEGACY
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struct net_local *lp = netdev_priv(dev);
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if (lp->mca_slot >= 0)
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mca_mark_as_unused(lp->mca_slot);
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#endif
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free_irq(dev->irq, NULL);
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release_region(dev->base_addr, AT1700_IO_EXTENT);
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}
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struct net_device * __init at1700_probe(int unit)
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{
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struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
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unsigned *port;
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int err = 0;
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if (!dev)
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return ERR_PTR(-ENODEV);
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if (unit >= 0) {
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sprintf(dev->name, "eth%d", unit);
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netdev_boot_setup_check(dev);
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io = dev->base_addr;
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irq = dev->irq;
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} else {
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dev->base_addr = io;
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dev->irq = irq;
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}
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SET_MODULE_OWNER(dev);
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if (io > 0x1ff) { /* Check a single specified location. */
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err = at1700_probe1(dev, io);
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} else if (io != 0) { /* Don't probe at all. */
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err = -ENXIO;
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} else {
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for (port = at1700_probe_list; *port; port++) {
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if (at1700_probe1(dev, *port) == 0)
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break;
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dev->irq = irq;
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}
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if (!*port)
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err = -ENODEV;
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}
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if (err)
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goto out;
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err = register_netdev(dev);
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if (err)
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goto out1;
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return dev;
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out1:
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cleanup_card(dev);
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out:
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free_netdev(dev);
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return ERR_PTR(err);
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}
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/* The Fujitsu datasheet suggests that the NIC be probed for by checking its
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"signature", the default bit pattern after a reset. This *doesn't* work --
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there is no way to reset the bus interface without a complete power-cycle!
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It turns out that ATI came to the same conclusion I did: the only thing
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that can be done is checking a few bits and then diving right into an
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EEPROM read. */
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static int __init at1700_probe1(struct net_device *dev, int ioaddr)
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{
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char fmv_irqmap[4] = {3, 7, 10, 15};
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char fmv_irqmap_pnp[8] = {3, 4, 5, 7, 9, 10, 11, 15};
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char at1700_irqmap[8] = {3, 4, 5, 9, 10, 11, 14, 15};
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unsigned int i, irq, is_fmv18x = 0, is_at1700 = 0;
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int slot, ret = -ENODEV;
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struct net_local *lp = netdev_priv(dev);
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if (!request_region(ioaddr, AT1700_IO_EXTENT, DRV_NAME))
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return -EBUSY;
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|
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/* Resetting the chip doesn't reset the ISA interface, so don't bother.
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That means we have to be careful with the register values we probe
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for.
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|
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*/
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#ifdef notdef
|
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printk("at1700 probe at %#x, eeprom is %4.4x %4.4x %4.4x ctrl %4.4x.\n",
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ioaddr, read_eeprom(ioaddr, 4), read_eeprom(ioaddr, 5),
|
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|
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read_eeprom(ioaddr, 6), inw(ioaddr + EEPROM_Ctrl));
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#endif
|
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|
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|
|||
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#ifdef CONFIG_MCA_LEGACY
|
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/* rEnE (rene@bss.lu): got this from 3c509 driver source , adapted for AT1720 */
|
|||
|
|
|
|||
|
|
/* Based on Erik Nygren's (nygren@mit.edu) 3c529 patch, heavily
|
|||
|
|
modified by Chris Beauregard (cpbeaure@csclub.uwaterloo.ca)
|
|||
|
|
to support standard MCA probing. */
|
|||
|
|
|
|||
|
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/* redone for multi-card detection by ZP Gu (zpg@castle.net) */
|
|||
|
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/* now works as a module */
|
|||
|
|
|
|||
|
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if (MCA_bus) {
|
|||
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int j;
|
|||
|
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int l_i;
|
|||
|
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u_char pos3, pos4;
|
|||
|
|
|
|||
|
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for (j = 0; at1720_mca_adapters[j].name != NULL; j ++) {
|
|||
|
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slot = 0;
|
|||
|
|
while (slot != MCA_NOTFOUND) {
|
|||
|
|
|
|||
|
|
slot = mca_find_unused_adapter( at1720_mca_adapters[j].id, slot );
|
|||
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if (slot == MCA_NOTFOUND) break;
|
|||
|
|
|
|||
|
|
/* if we get this far, an adapter has been detected and is
|
|||
|
|
enabled */
|
|||
|
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|
|||
|
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pos3 = mca_read_stored_pos( slot, 3 );
|
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pos4 = mca_read_stored_pos( slot, 4 );
|
|||
|
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|
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for (l_i = 0; l_i < 0x09; l_i++)
|
|||
|
|
if (( pos3 & 0x07) == at1700_ioaddr_pattern[l_i])
|
|||
|
|
break;
|
|||
|
|
ioaddr = at1700_mca_probe_list[l_i];
|
|||
|
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|
|||
|
|
for (irq = 0; irq < 0x10; irq++)
|
|||
|
|
if (((((pos4>>4) & 0x0f) | (pos3 & 0xf0)) & 0xff) == at1700_irq_pattern[irq])
|
|||
|
|
break;
|
|||
|
|
|
|||
|
|
/* probing for a card at a particular IO/IRQ */
|
|||
|
|
if ((dev->irq && dev->irq != irq) ||
|
|||
|
|
(dev->base_addr && dev->base_addr != ioaddr)) {
|
|||
|
|
slot++; /* probing next slot */
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
dev->irq = irq;
|
|||
|
|
|
|||
|
|
/* claim the slot */
|
|||
|
|
mca_set_adapter_name( slot, at1720_mca_adapters[j].name );
|
|||
|
|
mca_mark_as_used(slot);
|
|||
|
|
|
|||
|
|
goto found;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
/* if we get here, we didn't find an MCA adapter - try ISA */
|
|||
|
|
}
|
|||
|
|
#endif
|
|||
|
|
slot = -1;
|
|||
|
|
/* We must check for the EEPROM-config boards first, else accessing
|
|||
|
|
IOCONFIG0 will move the board! */
|
|||
|
|
if (at1700_probe_list[inb(ioaddr + IOCONFIG1) & 0x07] == ioaddr
|
|||
|
|
&& read_eeprom(ioaddr, 4) == 0x0000
|
|||
|
|
&& (read_eeprom(ioaddr, 5) & 0xff00) == 0xF400)
|
|||
|
|
is_at1700 = 1;
|
|||
|
|
else if (inb(ioaddr + SAPROM ) == 0x00
|
|||
|
|
&& inb(ioaddr + SAPROM + 1) == 0x00
|
|||
|
|
&& inb(ioaddr + SAPROM + 2) == 0x0e)
|
|||
|
|
is_fmv18x = 1;
|
|||
|
|
else {
|
|||
|
|
goto err_out;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#ifdef CONFIG_MCA_LEGACY
|
|||
|
|
found:
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
/* Reset the internal state machines. */
|
|||
|
|
outb(0, ioaddr + RESET);
|
|||
|
|
|
|||
|
|
if (is_at1700) {
|
|||
|
|
irq = at1700_irqmap[(read_eeprom(ioaddr, 12)&0x04)
|
|||
|
|
| (read_eeprom(ioaddr, 0)>>14)];
|
|||
|
|
} else {
|
|||
|
|
/* Check PnP mode for FMV-183/184/183A/184A. */
|
|||
|
|
/* This PnP routine is very poor. IO and IRQ should be known. */
|
|||
|
|
if (inb(ioaddr + CARDSTATUS1) & 0x20) {
|
|||
|
|
irq = dev->irq;
|
|||
|
|
for (i = 0; i < 8; i++) {
|
|||
|
|
if (irq == fmv_irqmap_pnp[i])
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
if (i == 8) {
|
|||
|
|
goto err_mca;
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
if (fmv18x_probe_list[inb(ioaddr + IOCONFIG) & 0x07] != ioaddr)
|
|||
|
|
goto err_mca;
|
|||
|
|
irq = fmv_irqmap[(inb(ioaddr + IOCONFIG)>>6) & 0x03];
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
printk("%s: %s found at %#3x, IRQ %d, address ", dev->name,
|
|||
|
|
is_at1700 ? "AT1700" : "FMV-18X", ioaddr, irq);
|
|||
|
|
|
|||
|
|
dev->base_addr = ioaddr;
|
|||
|
|
dev->irq = irq;
|
|||
|
|
|
|||
|
|
if (is_at1700) {
|
|||
|
|
for(i = 0; i < 3; i++) {
|
|||
|
|
unsigned short eeprom_val = read_eeprom(ioaddr, 4+i);
|
|||
|
|
printk("%04x", eeprom_val);
|
|||
|
|
((unsigned short *)dev->dev_addr)[i] = ntohs(eeprom_val);
|
|||
|
|
}
|
|||
|
|
} else {
|
|||
|
|
for(i = 0; i < 6; i++) {
|
|||
|
|
unsigned char val = inb(ioaddr + SAPROM + i);
|
|||
|
|
printk("%02x", val);
|
|||
|
|
dev->dev_addr[i] = val;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* The EEPROM word 12 bit 0x0400 means use regular 100 ohm 10baseT signals,
|
|||
|
|
rather than 150 ohm shielded twisted pair compensation.
|
|||
|
|
0x0000 == auto-sense the interface
|
|||
|
|
0x0800 == use TP interface
|
|||
|
|
0x1800 == use coax interface
|
|||
|
|
*/
|
|||
|
|
{
|
|||
|
|
const char *porttype[] = {"auto-sense", "10baseT", "auto-sense", "10base2"};
|
|||
|
|
if (is_at1700) {
|
|||
|
|
ushort setup_value = read_eeprom(ioaddr, 12);
|
|||
|
|
dev->if_port = setup_value >> 8;
|
|||
|
|
} else {
|
|||
|
|
ushort setup_value = inb(ioaddr + CARDSTATUS);
|
|||
|
|
switch (setup_value & 0x07) {
|
|||
|
|
case 0x01: /* 10base5 */
|
|||
|
|
case 0x02: /* 10base2 */
|
|||
|
|
dev->if_port = 0x18; break;
|
|||
|
|
case 0x04: /* 10baseT */
|
|||
|
|
dev->if_port = 0x08; break;
|
|||
|
|
default: /* auto-sense */
|
|||
|
|
dev->if_port = 0x00; break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
printk(" %s interface.\n", porttype[(dev->if_port>>3) & 3]);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* Set the configuration register 0 to 32K 100ns. byte-wide memory, 16 bit
|
|||
|
|
bus access, two 4K Tx queues, and disabled Tx and Rx. */
|
|||
|
|
outb(0xda, ioaddr + CONFIG_0);
|
|||
|
|
|
|||
|
|
/* Set the station address in bank zero. */
|
|||
|
|
outb(0x00, ioaddr + CONFIG_1);
|
|||
|
|
for (i = 0; i < 6; i++)
|
|||
|
|
outb(dev->dev_addr[i], ioaddr + PORT_OFFSET(8 + i));
|
|||
|
|
|
|||
|
|
/* Switch to bank 1 and set the multicast table to accept none. */
|
|||
|
|
outb(0x04, ioaddr + CONFIG_1);
|
|||
|
|
for (i = 0; i < 8; i++)
|
|||
|
|
outb(0x00, ioaddr + PORT_OFFSET(8 + i));
|
|||
|
|
|
|||
|
|
|
|||
|
|
/* Switch to bank 2 */
|
|||
|
|
/* Lock our I/O address, and set manual processing mode for 16 collisions. */
|
|||
|
|
outb(0x08, ioaddr + CONFIG_1);
|
|||
|
|
outb(dev->if_port, ioaddr + MODE13);
|
|||
|
|
outb(0x00, ioaddr + COL16CNTL);
|
|||
|
|
|
|||
|
|
if (net_debug)
|
|||
|
|
printk(version);
|
|||
|
|
|
|||
|
|
memset(lp, 0, sizeof(struct net_local));
|
|||
|
|
|
|||
|
|
dev->open = net_open;
|
|||
|
|
dev->stop = net_close;
|
|||
|
|
dev->hard_start_xmit = net_send_packet;
|
|||
|
|
dev->get_stats = net_get_stats;
|
|||
|
|
dev->set_multicast_list = &set_rx_mode;
|
|||
|
|
dev->tx_timeout = net_tx_timeout;
|
|||
|
|
dev->watchdog_timeo = TX_TIMEOUT;
|
|||
|
|
|
|||
|
|
spin_lock_init(&lp->lock);
|
|||
|
|
|
|||
|
|
lp->jumpered = is_fmv18x;
|
|||
|
|
lp->mca_slot = slot;
|
|||
|
|
/* Snarf the interrupt vector now. */
|
|||
|
|
ret = request_irq(irq, &net_interrupt, 0, DRV_NAME, dev);
|
|||
|
|
if (ret) {
|
|||
|
|
printk (" AT1700 at %#3x is unusable due to a conflict on"
|
|||
|
|
"IRQ %d.\n", ioaddr, irq);
|
|||
|
|
goto err_mca;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return 0;
|
|||
|
|
|
|||
|
|
err_mca:
|
|||
|
|
#ifdef CONFIG_MCA_LEGACY
|
|||
|
|
if (slot >= 0)
|
|||
|
|
mca_mark_as_unused(slot);
|
|||
|
|
#endif
|
|||
|
|
err_out:
|
|||
|
|
release_region(ioaddr, AT1700_IO_EXTENT);
|
|||
|
|
return ret;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
/* EEPROM_Ctrl bits. */
|
|||
|
|
#define EE_SHIFT_CLK 0x40 /* EEPROM shift clock, in reg. 16. */
|
|||
|
|
#define EE_CS 0x20 /* EEPROM chip select, in reg. 16. */
|
|||
|
|
#define EE_DATA_WRITE 0x80 /* EEPROM chip data in, in reg. 17. */
|
|||
|
|
#define EE_DATA_READ 0x80 /* EEPROM chip data out, in reg. 17. */
|
|||
|
|
|
|||
|
|
/* The EEPROM commands include the alway-set leading bit. */
|
|||
|
|
#define EE_WRITE_CMD (5 << 6)
|
|||
|
|
#define EE_READ_CMD (6 << 6)
|
|||
|
|
#define EE_ERASE_CMD (7 << 6)
|
|||
|
|
|
|||
|
|
static int __init read_eeprom(long ioaddr, int location)
|
|||
|
|
{
|
|||
|
|
int i;
|
|||
|
|
unsigned short retval = 0;
|
|||
|
|
long ee_addr = ioaddr + EEPROM_Ctrl;
|
|||
|
|
long ee_daddr = ioaddr + EEPROM_Data;
|
|||
|
|
int read_cmd = location | EE_READ_CMD;
|
|||
|
|
|
|||
|
|
/* Shift the read command bits out. */
|
|||
|
|
for (i = 9; i >= 0; i--) {
|
|||
|
|
short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
|
|||
|
|
outb(EE_CS, ee_addr);
|
|||
|
|
outb(dataval, ee_daddr);
|
|||
|
|
outb(EE_CS | EE_SHIFT_CLK, ee_addr); /* EEPROM clock tick. */
|
|||
|
|
}
|
|||
|
|
outb(EE_DATA_WRITE, ee_daddr);
|
|||
|
|
for (i = 16; i > 0; i--) {
|
|||
|
|
outb(EE_CS, ee_addr);
|
|||
|
|
outb(EE_CS | EE_SHIFT_CLK, ee_addr);
|
|||
|
|
retval = (retval << 1) | ((inb(ee_daddr) & EE_DATA_READ) ? 1 : 0);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* Terminate the EEPROM access. */
|
|||
|
|
outb(EE_CS, ee_addr);
|
|||
|
|
outb(EE_SHIFT_CLK, ee_addr);
|
|||
|
|
outb(0, ee_addr);
|
|||
|
|
return retval;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
static int net_open(struct net_device *dev)
|
|||
|
|
{
|
|||
|
|
struct net_local *lp = netdev_priv(dev);
|
|||
|
|
int ioaddr = dev->base_addr;
|
|||
|
|
|
|||
|
|
/* Set the configuration register 0 to 32K 100ns. byte-wide memory, 16 bit
|
|||
|
|
bus access, and two 4K Tx queues. */
|
|||
|
|
outb(0x5a, ioaddr + CONFIG_0);
|
|||
|
|
|
|||
|
|
/* Powerup, switch to register bank 2, and enable the Rx and Tx. */
|
|||
|
|
outb(0xe8, ioaddr + CONFIG_1);
|
|||
|
|
|
|||
|
|
lp->tx_started = 0;
|
|||
|
|
lp->tx_queue_ready = 1;
|
|||
|
|
lp->rx_started = 0;
|
|||
|
|
lp->tx_queue = 0;
|
|||
|
|
lp->tx_queue_len = 0;
|
|||
|
|
|
|||
|
|
/* Turn on hardware Tx and Rx interrupts. */
|
|||
|
|
outb(0x82, ioaddr + TX_INTR);
|
|||
|
|
outb(0x81, ioaddr + RX_INTR);
|
|||
|
|
|
|||
|
|
/* Enable the IRQ on boards of fmv18x it is feasible. */
|
|||
|
|
if (lp->jumpered) {
|
|||
|
|
outb(0x80, ioaddr + IOCONFIG1);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
netif_start_queue(dev);
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static void net_tx_timeout (struct net_device *dev)
|
|||
|
|
{
|
|||
|
|
struct net_local *lp = netdev_priv(dev);
|
|||
|
|
int ioaddr = dev->base_addr;
|
|||
|
|
|
|||
|
|
printk ("%s: transmit timed out with status %04x, %s?\n", dev->name,
|
|||
|
|
inw (ioaddr + STATUS), inb (ioaddr + TX_STATUS) & 0x80
|
|||
|
|
? "IRQ conflict" : "network cable problem");
|
|||
|
|
printk ("%s: timeout registers: %04x %04x %04x %04x %04x %04x %04x %04x.\n",
|
|||
|
|
dev->name, inw(ioaddr + TX_STATUS), inw(ioaddr + TX_INTR), inw(ioaddr + TX_MODE),
|
|||
|
|
inw(ioaddr + CONFIG_0), inw(ioaddr + DATAPORT), inw(ioaddr + TX_START),
|
|||
|
|
inw(ioaddr + MODE13 - 1), inw(ioaddr + RX_CTRL));
|
|||
|
|
lp->stats.tx_errors++;
|
|||
|
|
/* ToDo: We should try to restart the adaptor... */
|
|||
|
|
outw(0xffff, ioaddr + MODE24);
|
|||
|
|
outw (0xffff, ioaddr + TX_STATUS);
|
|||
|
|
outb (0x5a, ioaddr + CONFIG_0);
|
|||
|
|
outb (0xe8, ioaddr + CONFIG_1);
|
|||
|
|
outw (0x8182, ioaddr + TX_INTR);
|
|||
|
|
outb (0x00, ioaddr + TX_START);
|
|||
|
|
outb (0x03, ioaddr + COL16CNTL);
|
|||
|
|
|
|||
|
|
dev->trans_start = jiffies;
|
|||
|
|
|
|||
|
|
lp->tx_started = 0;
|
|||
|
|
lp->tx_queue_ready = 1;
|
|||
|
|
lp->rx_started = 0;
|
|||
|
|
lp->tx_queue = 0;
|
|||
|
|
lp->tx_queue_len = 0;
|
|||
|
|
|
|||
|
|
netif_wake_queue(dev);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
static int net_send_packet (struct sk_buff *skb, struct net_device *dev)
|
|||
|
|
{
|
|||
|
|
struct net_local *lp = netdev_priv(dev);
|
|||
|
|
int ioaddr = dev->base_addr;
|
|||
|
|
short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
|
|||
|
|
short len = skb->len;
|
|||
|
|
unsigned char *buf = skb->data;
|
|||
|
|
static u8 pad[ETH_ZLEN];
|
|||
|
|
|
|||
|
|
netif_stop_queue (dev);
|
|||
|
|
|
|||
|
|
/* We may not start transmitting unless we finish transferring
|
|||
|
|
a packet into the Tx queue. During executing the following
|
|||
|
|
codes we possibly catch a Tx interrupt. Thus we flag off
|
|||
|
|
tx_queue_ready, so that we prevent the interrupt routine
|
|||
|
|
(net_interrupt) to start transmitting. */
|
|||
|
|
lp->tx_queue_ready = 0;
|
|||
|
|
{
|
|||
|
|
outw (length, ioaddr + DATAPORT);
|
|||
|
|
/* Packet data */
|
|||
|
|
outsw (ioaddr + DATAPORT, buf, len >> 1);
|
|||
|
|
/* Check for dribble byte */
|
|||
|
|
if (len & 1) {
|
|||
|
|
outw(skb->data[skb->len-1], ioaddr + DATAPORT);
|
|||
|
|
len++;
|
|||
|
|
}
|
|||
|
|
/* Check for packet padding */
|
|||
|
|
if (length != skb->len)
|
|||
|
|
outsw(ioaddr + DATAPORT, pad, (length - len + 1) >> 1);
|
|||
|
|
|
|||
|
|
lp->tx_queue++;
|
|||
|
|
lp->tx_queue_len += length + 2;
|
|||
|
|
}
|
|||
|
|
lp->tx_queue_ready = 1;
|
|||
|
|
|
|||
|
|
if (lp->tx_started == 0) {
|
|||
|
|
/* If the Tx is idle, always trigger a transmit. */
|
|||
|
|
outb (0x80 | lp->tx_queue, ioaddr + TX_START);
|
|||
|
|
lp->tx_queue = 0;
|
|||
|
|
lp->tx_queue_len = 0;
|
|||
|
|
dev->trans_start = jiffies;
|
|||
|
|
lp->tx_started = 1;
|
|||
|
|
netif_start_queue (dev);
|
|||
|
|
} else if (lp->tx_queue_len < 4096 - 1502)
|
|||
|
|
/* Yes, there is room for one more packet. */
|
|||
|
|
netif_start_queue (dev);
|
|||
|
|
dev_kfree_skb (skb);
|
|||
|
|
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* The typical workload of the driver:
|
|||
|
|
Handle the network interface interrupts. */
|
|||
|
|
static irqreturn_t
|
|||
|
|
net_interrupt(int irq, void *dev_id, struct pt_regs *regs)
|
|||
|
|
{
|
|||
|
|
struct net_device *dev = dev_id;
|
|||
|
|
struct net_local *lp;
|
|||
|
|
int ioaddr, status;
|
|||
|
|
int handled = 0;
|
|||
|
|
|
|||
|
|
if (dev == NULL) {
|
|||
|
|
printk ("at1700_interrupt(): irq %d for unknown device.\n", irq);
|
|||
|
|
return IRQ_NONE;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
ioaddr = dev->base_addr;
|
|||
|
|
lp = netdev_priv(dev);
|
|||
|
|
|
|||
|
|
spin_lock (&lp->lock);
|
|||
|
|
|
|||
|
|
status = inw(ioaddr + TX_STATUS);
|
|||
|
|
outw(status, ioaddr + TX_STATUS);
|
|||
|
|
|
|||
|
|
if (net_debug > 4)
|
|||
|
|
printk("%s: Interrupt with status %04x.\n", dev->name, status);
|
|||
|
|
if (lp->rx_started == 0 &&
|
|||
|
|
(status & 0xff00 || (inb(ioaddr + RX_MODE) & 0x40) == 0)) {
|
|||
|
|
/* Got a packet(s).
|
|||
|
|
We cannot execute net_rx more than once at the same time for
|
|||
|
|
the same device. During executing net_rx, we possibly catch a
|
|||
|
|
Tx interrupt. Thus we flag on rx_started, so that we prevent
|
|||
|
|
the interrupt routine (net_interrupt) to dive into net_rx
|
|||
|
|
again. */
|
|||
|
|
handled = 1;
|
|||
|
|
lp->rx_started = 1;
|
|||
|
|
outb(0x00, ioaddr + RX_INTR); /* Disable RX intr. */
|
|||
|
|
net_rx(dev);
|
|||
|
|
outb(0x81, ioaddr + RX_INTR); /* Enable RX intr. */
|
|||
|
|
lp->rx_started = 0;
|
|||
|
|
}
|
|||
|
|
if (status & 0x00ff) {
|
|||
|
|
handled = 1;
|
|||
|
|
if (status & 0x02) {
|
|||
|
|
/* More than 16 collisions occurred */
|
|||
|
|
if (net_debug > 4)
|
|||
|
|
printk("%s: 16 Collision occur during Txing.\n", dev->name);
|
|||
|
|
/* Cancel sending a packet. */
|
|||
|
|
outb(0x03, ioaddr + COL16CNTL);
|
|||
|
|
lp->stats.collisions++;
|
|||
|
|
}
|
|||
|
|
if (status & 0x82) {
|
|||
|
|
lp->stats.tx_packets++;
|
|||
|
|
/* The Tx queue has any packets and is not being
|
|||
|
|
transferred a packet from the host, start
|
|||
|
|
transmitting. */
|
|||
|
|
if (lp->tx_queue && lp->tx_queue_ready) {
|
|||
|
|
outb(0x80 | lp->tx_queue, ioaddr + TX_START);
|
|||
|
|
lp->tx_queue = 0;
|
|||
|
|
lp->tx_queue_len = 0;
|
|||
|
|
dev->trans_start = jiffies;
|
|||
|
|
netif_wake_queue (dev);
|
|||
|
|
} else {
|
|||
|
|
lp->tx_started = 0;
|
|||
|
|
netif_wake_queue (dev);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
spin_unlock (&lp->lock);
|
|||
|
|
return IRQ_RETVAL(handled);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* We have a good packet(s), get it/them out of the buffers. */
|
|||
|
|
static void
|
|||
|
|
net_rx(struct net_device *dev)
|
|||
|
|
{
|
|||
|
|
struct net_local *lp = netdev_priv(dev);
|
|||
|
|
int ioaddr = dev->base_addr;
|
|||
|
|
int boguscount = 5;
|
|||
|
|
|
|||
|
|
while ((inb(ioaddr + RX_MODE) & 0x40) == 0) {
|
|||
|
|
ushort status = inw(ioaddr + DATAPORT);
|
|||
|
|
ushort pkt_len = inw(ioaddr + DATAPORT);
|
|||
|
|
|
|||
|
|
if (net_debug > 4)
|
|||
|
|
printk("%s: Rxing packet mode %02x status %04x.\n",
|
|||
|
|
dev->name, inb(ioaddr + RX_MODE), status);
|
|||
|
|
#ifndef final_version
|
|||
|
|
if (status == 0) {
|
|||
|
|
outb(0x05, ioaddr + RX_CTRL);
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
if ((status & 0xF0) != 0x20) { /* There was an error. */
|
|||
|
|
lp->stats.rx_errors++;
|
|||
|
|
if (status & 0x08) lp->stats.rx_length_errors++;
|
|||
|
|
if (status & 0x04) lp->stats.rx_frame_errors++;
|
|||
|
|
if (status & 0x02) lp->stats.rx_crc_errors++;
|
|||
|
|
if (status & 0x01) lp->stats.rx_over_errors++;
|
|||
|
|
} else {
|
|||
|
|
/* Malloc up new buffer. */
|
|||
|
|
struct sk_buff *skb;
|
|||
|
|
|
|||
|
|
if (pkt_len > 1550) {
|
|||
|
|
printk("%s: The AT1700 claimed a very large packet, size %d.\n",
|
|||
|
|
dev->name, pkt_len);
|
|||
|
|
/* Prime the FIFO and then flush the packet. */
|
|||
|
|
inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
|
|||
|
|
outb(0x05, ioaddr + RX_CTRL);
|
|||
|
|
lp->stats.rx_errors++;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
skb = dev_alloc_skb(pkt_len+3);
|
|||
|
|
if (skb == NULL) {
|
|||
|
|
printk("%s: Memory squeeze, dropping packet (len %d).\n",
|
|||
|
|
dev->name, pkt_len);
|
|||
|
|
/* Prime the FIFO and then flush the packet. */
|
|||
|
|
inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
|
|||
|
|
outb(0x05, ioaddr + RX_CTRL);
|
|||
|
|
lp->stats.rx_dropped++;
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
skb->dev = dev;
|
|||
|
|
skb_reserve(skb,2);
|
|||
|
|
|
|||
|
|
insw(ioaddr + DATAPORT, skb_put(skb,pkt_len), (pkt_len + 1) >> 1);
|
|||
|
|
skb->protocol=eth_type_trans(skb, dev);
|
|||
|
|
netif_rx(skb);
|
|||
|
|
dev->last_rx = jiffies;
|
|||
|
|
lp->stats.rx_packets++;
|
|||
|
|
lp->stats.rx_bytes += pkt_len;
|
|||
|
|
}
|
|||
|
|
if (--boguscount <= 0)
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* If any worth-while packets have been received, dev_rint()
|
|||
|
|
has done a mark_bh(NET_BH) for us and will work on them
|
|||
|
|
when we get to the bottom-half routine. */
|
|||
|
|
{
|
|||
|
|
int i;
|
|||
|
|
for (i = 0; i < 20; i++) {
|
|||
|
|
if ((inb(ioaddr + RX_MODE) & 0x40) == 0x40)
|
|||
|
|
break;
|
|||
|
|
inw(ioaddr + DATAPORT); /* dummy status read */
|
|||
|
|
outb(0x05, ioaddr + RX_CTRL);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (net_debug > 5)
|
|||
|
|
printk("%s: Exint Rx packet with mode %02x after %d ticks.\n",
|
|||
|
|
dev->name, inb(ioaddr + RX_MODE), i);
|
|||
|
|
}
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* The inverse routine to net_open(). */
|
|||
|
|
static int net_close(struct net_device *dev)
|
|||
|
|
{
|
|||
|
|
struct net_local *lp = netdev_priv(dev);
|
|||
|
|
int ioaddr = dev->base_addr;
|
|||
|
|
|
|||
|
|
netif_stop_queue(dev);
|
|||
|
|
|
|||
|
|
/* Set configuration register 0 to disable Tx and Rx. */
|
|||
|
|
outb(0xda, ioaddr + CONFIG_0);
|
|||
|
|
|
|||
|
|
/* No statistic counters on the chip to update. */
|
|||
|
|
|
|||
|
|
/* Disable the IRQ on boards of fmv18x where it is feasible. */
|
|||
|
|
if (lp->jumpered) {
|
|||
|
|
outb(0x00, ioaddr + IOCONFIG1);
|
|||
|
|
free_irq(dev->irq, dev);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* Power-down the chip. Green, green, green! */
|
|||
|
|
outb(0x00, ioaddr + CONFIG_1);
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/* Get the current statistics.
|
|||
|
|
This may be called with the card open or closed.
|
|||
|
|
There are no on-chip counters, so this function is trivial.
|
|||
|
|
*/
|
|||
|
|
static struct net_device_stats *
|
|||
|
|
net_get_stats(struct net_device *dev)
|
|||
|
|
{
|
|||
|
|
struct net_local *lp = netdev_priv(dev);
|
|||
|
|
return &lp->stats;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
Set the multicast/promiscuous mode for this adaptor.
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
static void
|
|||
|
|
set_rx_mode(struct net_device *dev)
|
|||
|
|
{
|
|||
|
|
int ioaddr = dev->base_addr;
|
|||
|
|
struct net_local *lp = netdev_priv(dev);
|
|||
|
|
unsigned char mc_filter[8]; /* Multicast hash filter */
|
|||
|
|
unsigned long flags;
|
|||
|
|
int i;
|
|||
|
|
|
|||
|
|
if (dev->flags & IFF_PROMISC) {
|
|||
|
|
/* Unconditionally log net taps. */
|
|||
|
|
printk("%s: Promiscuous mode enabled.\n", dev->name);
|
|||
|
|
memset(mc_filter, 0xff, sizeof(mc_filter));
|
|||
|
|
outb(3, ioaddr + RX_MODE); /* Enable promiscuous mode */
|
|||
|
|
} else if (dev->mc_count > MC_FILTERBREAK
|
|||
|
|
|| (dev->flags & IFF_ALLMULTI)) {
|
|||
|
|
/* Too many to filter perfectly -- accept all multicasts. */
|
|||
|
|
memset(mc_filter, 0xff, sizeof(mc_filter));
|
|||
|
|
outb(2, ioaddr + RX_MODE); /* Use normal mode. */
|
|||
|
|
} else if (dev->mc_count == 0) {
|
|||
|
|
memset(mc_filter, 0x00, sizeof(mc_filter));
|
|||
|
|
outb(1, ioaddr + RX_MODE); /* Ignore almost all multicasts. */
|
|||
|
|
} else {
|
|||
|
|
struct dev_mc_list *mclist;
|
|||
|
|
int i;
|
|||
|
|
|
|||
|
|
memset(mc_filter, 0, sizeof(mc_filter));
|
|||
|
|
for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
|
|||
|
|
i++, mclist = mclist->next) {
|
|||
|
|
unsigned int bit =
|
|||
|
|
ether_crc_le(ETH_ALEN, mclist->dmi_addr) >> 26;
|
|||
|
|
mc_filter[bit >> 3] |= (1 << bit);
|
|||
|
|
}
|
|||
|
|
outb(0x02, ioaddr + RX_MODE); /* Use normal mode. */
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
spin_lock_irqsave (&lp->lock, flags);
|
|||
|
|
if (memcmp(mc_filter, lp->mc_filter, sizeof(mc_filter))) {
|
|||
|
|
int saved_bank = inw(ioaddr + CONFIG_0);
|
|||
|
|
/* Switch to bank 1 and set the multicast table. */
|
|||
|
|
outw((saved_bank & ~0x0C00) | 0x0480, ioaddr + CONFIG_0);
|
|||
|
|
for (i = 0; i < 8; i++)
|
|||
|
|
outb(mc_filter[i], ioaddr + PORT_OFFSET(8 + i));
|
|||
|
|
memcpy(lp->mc_filter, mc_filter, sizeof(mc_filter));
|
|||
|
|
outw(saved_bank, ioaddr + CONFIG_0);
|
|||
|
|
}
|
|||
|
|
spin_unlock_irqrestore (&lp->lock, flags);
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#ifdef MODULE
|
|||
|
|
static struct net_device *dev_at1700;
|
|||
|
|
|
|||
|
|
module_param(io, int, 0);
|
|||
|
|
module_param(irq, int, 0);
|
|||
|
|
module_param(net_debug, int, 0);
|
|||
|
|
MODULE_PARM_DESC(io, "AT1700/FMV18X I/O base address");
|
|||
|
|
MODULE_PARM_DESC(irq, "AT1700/FMV18X IRQ number");
|
|||
|
|
MODULE_PARM_DESC(net_debug, "AT1700/FMV18X debug level (0-6)");
|
|||
|
|
|
|||
|
|
int init_module(void)
|
|||
|
|
{
|
|||
|
|
if (io == 0)
|
|||
|
|
printk("at1700: You should not use auto-probing with insmod!\n");
|
|||
|
|
dev_at1700 = at1700_probe(-1);
|
|||
|
|
if (IS_ERR(dev_at1700))
|
|||
|
|
return PTR_ERR(dev_at1700);
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
void
|
|||
|
|
cleanup_module(void)
|
|||
|
|
{
|
|||
|
|
unregister_netdev(dev_at1700);
|
|||
|
|
cleanup_card(dev_at1700);
|
|||
|
|
free_netdev(dev_at1700);
|
|||
|
|
}
|
|||
|
|
#endif /* MODULE */
|
|||
|
|
MODULE_LICENSE("GPL");
|
|||
|
|
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
* Local variables:
|
|||
|
|
* compile-command: "gcc -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c at1700.c"
|
|||
|
|
* alt-compile-command: "gcc -DMODVERSIONS -DMODULE -D__KERNEL__ -Wall -Wstrict-prototypes -O6 -c at1700.c"
|
|||
|
|
* tab-width: 4
|
|||
|
|
* c-basic-offset: 4
|
|||
|
|
* c-indent-level: 4
|
|||
|
|
* End:
|
|||
|
|
*/
|
|||
|
|
|