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/*

   net-3-driver for the 3c523 Etherlink/MC card (i82586 Ethernet chip)

   This is an extension to the Linux operating system, and is covered by the

   same GNU General Public License that covers that work.

   Copyright 1995, 1996 by Chris Beauregard (cpbeaure@undergrad.math.uwaterloo.ca)

   This is basically Michael Hipp's ni52 driver, with a new probing

   algorithm and some minor changes to the 82586 CA and reset routines.

   Thanks a lot Michael for a really clean i82586 implementation!  Unless

   otherwise documented in ni52.c, any bugs are mine.

   Contrary to the Ethernet-HOWTO, this isn't based on the 3c507 driver in

   any way.  The ni52 is a lot easier to modify.

   sources:

   ni52.c

   Crynwr packet driver collection was a great reference for my first

   attempt at this sucker.  The 3c507 driver also helped, until I noticed

   that ni52.c was a lot nicer.

   EtherLink/MC: Micro Channel Ethernet Adapter Technical Reference

   Manual, courtesy of 3Com CardFacts, documents the 3c523-specific

   stuff.  Information on CardFacts is found in the Ethernet HOWTO.

   Also see <a href="http://www.3com.com/">

   Microprocessor Communications Support Chips, T.J. Byers, ISBN

   0-444-01224-9, has a section on the i82586.  It tells you just enough

   to know that you really don't want to learn how to program the chip.

   The original device probe code was stolen from ps2esdi.c

   Known Problems:

   Since most of the code was stolen from ni52.c, you'll run across the

   same bugs in the 0.62 version of ni52.c, plus maybe a few because of

   the 3c523 idiosynchacies.  The 3c523 has 16K of RAM though, so there

   shouldn't be the overrun problem that the 8K ni52 has.

   This driver is for a 16K adapter.  It should work fine on the 64K

   adapters, but it will only use one of the 4 banks of RAM.  Modifying

   this for the 64K version would require a lot of heinous bank

   switching, which I'm sure not interested in doing.  If you try to

   implement a bank switching version, you'll basically have to remember

   what bank is enabled and do a switch everytime you access a memory

   location that's not current.  You'll also have to remap pointers on

   the driver side, because it only knows about 16K of the memory.

   Anyone desperate or masochistic enough to try?

   It seems to be stable now when multiple transmit buffers are used.  I

   can't see any performance difference, but then I'm working on a 386SX.

   Multicast doesn't work.  It doesn't even pretend to work.  Don't use

   it.  Don't compile your kernel with multicast support.  I don't know

   why.

   Features:

   This driver is useable as a loadable module.  If you try to specify an

   IRQ or a IO address (via insmod 3c523.o irq=xx io=0xyyy), it will

   search the MCA slots until it finds a 3c523 with the specified

   parameters.

   This driver does support multiple ethernet cards when used as a module

   (up to MAX_3C523_CARDS, the default being 4)

   This has been tested with both BNC and TP versions, internal and

   external transceivers.  Haven't tested with the 64K version (that I

   know of).

   History:

   Jan 1st, 1996

   first public release

   Feb 4th, 1996

   update to 1.3.59, incorporated multicast diffs from ni52.c

   Feb 15th, 1996

   added shared irq support

   Apr 1999

   added support for multiple cards when used as a module

   added option to disable multicast as is causes problems

       Ganesh Sittampalam <ganesh.sittampalam@magdalen.oxford.ac.uk>

       Stuart Adamson <stuart.adamson@compsoc.net>

   Nov 2001

   added support for ethtool (jgarzik)

   $Header: /home/marcus/revision_ctrl_test/oc_cvs/cvs/or1k/linux/linux-2.4/drivers/net/3c523.c,v 1.1.1.1 2004-04-15 01:44:38 phoenix Exp $

 */

#define DRV_NAME                "3c523"

#define DRV_VERSION             "17-Nov-2001"

#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/sched.h>

#include <linux/string.h>

#include <linux/errno.h>

#include <linux/ioport.h>

#include <linux/slab.h>

#include <linux/interrupt.h>

#include <linux/delay.h>

#include <linux/mca.h>

#include <linux/ethtool.h>

#include <asm/uaccess.h>

#include <asm/processor.h>

#include <asm/bitops.h>

#include <asm/io.h>

#include <linux/netdevice.h>

#include <linux/etherdevice.h>

#include <linux/skbuff.h>

#include <linux/init.h>

#include "3c523.h"

/*************************************************************************/

#define DEBUG                   /* debug on */

#define SYSBUSVAL 0             /* 1 = 8 Bit, 0 = 16 bit - 3c523 only does 16 bit */

#undef ELMC_MULTICAST           /* Disable multicast support as it is somewhat seriously broken at the moment */

#define make32(ptr16) (p->memtop + (short) (ptr16) )

#define make24(ptr32) ((char *) (ptr32) - p->base)

#define make16(ptr32) ((unsigned short) ((unsigned long) (ptr32) - (unsigned long) p->memtop ))

/*************************************************************************/

/*

   Tables to which we can map values in the configuration registers.

 */

static int irq_table[] __initdata = {

        12, 7, 3, 9

};

static int csr_table[] __initdata = {

        0x300, 0x1300, 0x2300, 0x3300

};

static int shm_table[] __initdata = {

        0x0c0000, 0x0c8000, 0x0d0000, 0x0d8000

};

/******************* how to calculate the buffers *****************************

  * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works

  * --------------- in a different (more stable?) mode. Only in this mode it's

  *                 possible to configure the driver with 'NO_NOPCOMMANDS'

sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;

sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT

sizeof(rfd) = 24; sizeof(rbd) = 12;

sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;

sizeof(nop_cmd) = 8;

  * if you don't know the driver, better do not change this values: */

#define RECV_BUFF_SIZE 1524     /* slightly oversized */

#define XMIT_BUFF_SIZE 1524     /* slightly oversized */

#define NUM_XMIT_BUFFS 1        /* config for both, 8K and 16K shmem */

#define NUM_RECV_BUFFS_8  4     /* config for 8K shared mem */

#define NUM_RECV_BUFFS_16 9     /* config for 16K shared mem */

#if (NUM_XMIT_BUFFS == 1)

#define NO_NOPCOMMANDS          /* only possible with NUM_XMIT_BUFFS=1 */

#endif

/**************************************************************************/

#define DELAY(x) { mdelay(32 * x); }

/* a much shorter delay: */

#define DELAY_16(); { udelay(16) ; }

/* wait for command with timeout: */

#define WAIT_4_SCB_CMD() { int i; \

  for(i=0;i<1024;i++) { \

    if(!p->scb->cmd) break; \

    DELAY_16(); \

    if(i == 1023) { \

      printk(KERN_WARNING "%s:%d: scb_cmd timed out .. resetting i82586\n",\

        dev->name,__LINE__); \

      elmc_id_reset586(); } } }

static void elmc_interrupt(int irq, void *dev_id, struct pt_regs *reg_ptr);

static int elmc_open(struct net_device *dev);

static int elmc_close(struct net_device *dev);

static int elmc_send_packet(struct sk_buff *, struct net_device *);

static struct net_device_stats *elmc_get_stats(struct net_device *dev);

static void elmc_timeout(struct net_device *dev);

#ifdef ELMC_MULTICAST

static void set_multicast_list(struct net_device *dev);

#endif

static struct ethtool_ops netdev_ethtool_ops;

/* helper-functions */

static int init586(struct net_device *dev);

static int check586(struct net_device *dev, unsigned long where, unsigned size);

static void alloc586(struct net_device *dev);

static void startrecv586(struct net_device *dev);

static void *alloc_rfa(struct net_device *dev, void *ptr);

static void elmc_rcv_int(struct net_device *dev);

static void elmc_xmt_int(struct net_device *dev);

static void elmc_rnr_int(struct net_device *dev);

struct priv {

        struct net_device_stats stats;

        unsigned long base;

        char *memtop;

        unsigned long mapped_start;             /* Start of ioremap */

        volatile struct rfd_struct *rfd_last, *rfd_top, *rfd_first;

        volatile struct scp_struct *scp;        /* volatile is important */

        volatile struct iscp_struct *iscp;      /* volatile is important */

        volatile struct scb_struct *scb;        /* volatile is important */

        volatile struct tbd_struct *xmit_buffs[NUM_XMIT_BUFFS];

#if (NUM_XMIT_BUFFS == 1)

        volatile struct transmit_cmd_struct *xmit_cmds[2];

        volatile struct nop_cmd_struct *nop_cmds[2];

#else

        volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];

        volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];

#endif

        volatile int nop_point, num_recv_buffs;

        volatile char *xmit_cbuffs[NUM_XMIT_BUFFS];

        volatile int xmit_count, xmit_last;

        volatile int slot;

};

#define elmc_attn586()  {elmc_do_attn586(dev->base_addr,ELMC_CTRL_INTE);}

#define elmc_reset586() {elmc_do_reset586(dev->base_addr,ELMC_CTRL_INTE);}

/* with interrupts disabled - this will clear the interrupt bit in the

   3c523 control register, and won't put it back.  This effectively

   disables interrupts on the card. */

#define elmc_id_attn586()  {elmc_do_attn586(dev->base_addr,0);}

#define elmc_id_reset586() {elmc_do_reset586(dev->base_addr,0);}

/*************************************************************************/

/*

   Do a Channel Attention on the 3c523.  This is extremely board dependent.

 */

static void elmc_do_attn586(int ioaddr, int ints)

{

        /* the 3c523 requires a minimum of 500 ns.  The delays here might be

           a little too large, and hence they may cut the performance of the

           card slightly.  If someone who knows a little more about Linux

           timing would care to play with these, I'd appreciate it. */

        /* this bit masking stuff is crap.  I'd rather have separate

           registers with strobe triggers for each of these functions.  <sigh>

           Ya take what ya got. */

        outb(ELMC_CTRL_RST | 0x3 | ELMC_CTRL_CA | ints, ioaddr + ELMC_CTRL);

        DELAY_16();             /* > 500 ns */

        outb(ELMC_CTRL_RST | 0x3 | ints, ioaddr + ELMC_CTRL);

}

/*************************************************************************/

/*

   Reset the 82586 on the 3c523.  Also very board dependent.

 */

static void elmc_do_reset586(int ioaddr, int ints)

{

        /* toggle the RST bit low then high */

        outb(0x3 | ELMC_CTRL_LBK, ioaddr + ELMC_CTRL);

        DELAY_16();             /* > 500 ns */

        outb(ELMC_CTRL_RST | ELMC_CTRL_LBK | 0x3, ioaddr + ELMC_CTRL);

        elmc_do_attn586(ioaddr, ints);

}

/**********************************************

 * close device

 */

static int elmc_close(struct net_device *dev)

{

        netif_stop_queue(dev);

        elmc_id_reset586();     /* the hard way to stop the receiver */

        free_irq(dev->irq, dev);

        return 0;

}

/**********************************************

 * open device

 */

static int elmc_open(struct net_device *dev)

{

        int ret;

        elmc_id_attn586();      /* disable interrupts */

        ret = request_irq(dev->irq, &elmc_interrupt, SA_SHIRQ | SA_SAMPLE_RANDOM,

                          dev->name, dev);

        if (ret) {

                printk(KERN_ERR "%s: couldn't get irq %d\n", dev->name, dev->irq);

                elmc_id_reset586();

                return ret;

        }

        alloc586(dev);

        init586(dev);

        startrecv586(dev);

        netif_start_queue(dev);

        return 0;                /* most done by init */

}

/**********************************************

 * Check to see if there's an 82586 out there.

 */

static int __init check586(struct net_device *dev, unsigned long where, unsigned size)

{

        struct priv *p = (struct priv *) dev->priv;

        char *iscp_addrs[2];

        int i = 0;

        p->base = (unsigned long) bus_to_virt((unsigned long)where) + size - 0x01000000;

        p->memtop = bus_to_virt((unsigned long)where) + size;

        p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);

        memset((char *) p->scp, 0, sizeof(struct scp_struct));

        p->scp->sysbus = SYSBUSVAL;     /* 1 = 8Bit-Bus, 0 = 16 Bit */

        iscp_addrs[0] = bus_to_virt((unsigned long)where);

        iscp_addrs[1] = (char *) p->scp - sizeof(struct iscp_struct);

        for (i = 0; i < 2; i++) {

                p->iscp = (struct iscp_struct *) iscp_addrs[i];

                memset((char *) p->iscp, 0, sizeof(struct iscp_struct));

                p->scp->iscp = make24(p->iscp);

                p->iscp->busy = 1;

                elmc_id_reset586();

                /* reset586 does an implicit CA */

                /* apparently, you sometimes have to kick the 82586 twice... */

                elmc_id_attn586();

                DELAY(1);

                if (p->iscp->busy) {    /* i82586 clears 'busy' after successful init */

                        return 0;

                }

        }

        return 1;

}

/******************************************************************

 * set iscp at the right place, called by elmc_probe and open586.

 */

void alloc586(struct net_device *dev)

{

        struct priv *p = (struct priv *) dev->priv;

        elmc_id_reset586();

        DELAY(2);

        p->scp = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS);

        p->scb = (struct scb_struct *) bus_to_virt(dev->mem_start);

        p->iscp = (struct iscp_struct *) ((char *) p->scp - sizeof(struct iscp_struct));

        memset((char *) p->iscp, 0, sizeof(struct iscp_struct));

        memset((char *) p->scp, 0, sizeof(struct scp_struct));

        p->scp->iscp = make24(p->iscp);

        p->scp->sysbus = SYSBUSVAL;

        p->iscp->scb_offset = make16(p->scb);

        p->iscp->busy = 1;

        elmc_id_reset586();

        elmc_id_attn586();

        DELAY(2);

        if (p->iscp->busy) {

                printk(KERN_ERR "%s: Init-Problems (alloc).\n", dev->name);

        }

        memset((char *) p->scb, 0, sizeof(struct scb_struct));

}

/*****************************************************************/

static int elmc_getinfo(char *buf, int slot, void *d)

{

        int len = 0;

        struct net_device *dev = (struct net_device *) d;

        int i;

        if (dev == NULL)

                return len;

        len += sprintf(buf + len, "Revision: 0x%x\n",

                       inb(dev->base_addr + ELMC_REVISION) & 0xf);

        len += sprintf(buf + len, "IRQ: %d\n", dev->irq);

        len += sprintf(buf + len, "IO Address: %#lx-%#lx\n", dev->base_addr,

                       dev->base_addr + ELMC_IO_EXTENT);

        len += sprintf(buf + len, "Memory: %#lx-%#lx\n", dev->mem_start,

                       dev->mem_end - 1);

        len += sprintf(buf + len, "Transceiver: %s\n", dev->if_port ?

                       "External" : "Internal");

        len += sprintf(buf + len, "Device: %s\n", dev->name);

        len += sprintf(buf + len, "Hardware Address:");

        for (i = 0; i < 6; i++) {

                len += sprintf(buf + len, " %02x", dev->dev_addr[i]);

        }

        buf[len++] = '\n';

        buf[len] = 0;

        return len;

}                               /* elmc_getinfo() */

/*****************************************************************/

int __init elmc_probe(struct net_device *dev)

{

        static int slot;

        int base_addr = dev->base_addr;

        int irq = dev->irq;

        u_char status = 0;

        u_char revision = 0;

        int i = 0;

        unsigned int size = 0;

        int retval;

        struct priv *pr;

        SET_MODULE_OWNER(dev);

        if (MCA_bus == 0) {

                return -ENODEV;

        }

        /* search through the slots for the 3c523. */

        slot = mca_find_adapter(ELMC_MCA_ID, 0);

        while (slot != -1) {

                status = mca_read_stored_pos(slot, 2);

                dev->irq=irq_table[(status & ELMC_STATUS_IRQ_SELECT) >> 6];

                dev->base_addr=csr_table[(status & ELMC_STATUS_CSR_SELECT) >> 1];

                /*

                   If we're trying to match a specified irq or IO address,

                   we'll reject a match unless it's what we're looking for.

                   Also reject it if the card is already in use.

                 */

                if ((irq && irq != dev->irq) ||

                    (base_addr && base_addr != dev->base_addr)) {

                        slot = mca_find_adapter(ELMC_MCA_ID, slot + 1);

                        continue;

                }

                if (!request_region(dev->base_addr, ELMC_IO_EXTENT, dev->name)) {

                        slot = mca_find_adapter(ELMC_MCA_ID, slot + 1);

                        continue;

                }

                /* found what we're looking for... */

                break;

        }

        /* we didn't find any 3c523 in the slots we checked for */

        if (slot == MCA_NOTFOUND) {

                retval = ((base_addr || irq) ? -ENXIO : -ENODEV);

                goto err_out;

        }

        mca_set_adapter_name(slot, "3Com 3c523 Etherlink/MC");

        mca_set_adapter_procfn(slot, (MCA_ProcFn) elmc_getinfo, dev);

        /* if we get this far, adapter has been found - carry on */

        printk(KERN_INFO "%s: 3c523 adapter found in slot %d\n", dev->name, slot + 1);

        /* Now we extract configuration info from the card.

           The 3c523 provides information in two of the POS registers, but

           the second one is only needed if we want to tell the card what IRQ

           to use.  I suspect that whoever sets the thing up initially would

           prefer we don't screw with those things.

           Note that we read the status info when we found the card...

           See 3c523.h for more details.

         */

        /* revision is stored in the first 4 bits of the revision register */

        revision = inb(dev->base_addr + ELMC_REVISION) & 0xf;

        /* according to docs, we read the interrupt and write it back to

           the IRQ select register, since the POST might not configure the IRQ

           properly. */

        switch (dev->irq) {

        case 3:

                mca_write_pos(slot, 3, 0x04);

                break;

        case 7:

                mca_write_pos(slot, 3, 0x02);

                break;

        case 9:

                mca_write_pos(slot, 3, 0x08);

                break;

        case 12:

                mca_write_pos(slot, 3, 0x01);

                break;

        }

        pr = dev->priv = kmalloc(sizeof(struct priv), GFP_KERNEL);

        if (dev->priv == NULL) {

                retval = -ENOMEM;

                goto err_out;

        }

        memset(pr, 0, sizeof(struct priv));

        pr->slot = slot;

        printk(KERN_INFO "%s: 3Com 3c523 Rev 0x%x at %#lx\n", dev->name, (int) revision,

               dev->base_addr);

        /* Determine if we're using the on-board transceiver (i.e. coax) or

           an external one.  The information is pretty much useless, but I

           guess it's worth brownie points. */

        dev->if_port = (status & ELMC_STATUS_DISABLE_THIN);

        /* The 3c523 has a 24K chunk of memory.  The first 16K is the

           shared memory, while the last 8K is for the EtherStart BIOS ROM.

           Which we don't care much about here.  We'll just tell Linux that

           we're using 16K.  MCA won't permit address space conflicts caused

           by not mapping the other 8K. */

        dev->mem_start = shm_table[(status & ELMC_STATUS_MEMORY_SELECT) >> 3];

        /* We're using MCA, so it's a given that the information about memory

           size is correct.  The Crynwr drivers do something like this. */

        elmc_id_reset586();     /* seems like a good idea before checking it... */

        size = 0x4000;          /* check for 16K mem */

        if (!check586(dev, dev->mem_start, size)) {

                printk(KERN_ERR "%s: memprobe, Can't find memory at 0x%lx!\n", dev->name,

                       dev->mem_start);

                kfree(dev->priv);

                dev->priv = NULL;

                retval = -ENODEV;

                goto err_out;

        }

        dev->mem_end = dev->mem_start + size;   /* set mem_end showed by 'ifconfig' */

        pr->memtop = bus_to_virt(dev->mem_start) + size;

        pr->base = (unsigned long) bus_to_virt(dev->mem_start) + size - 0x01000000;

        alloc586(dev);

        elmc_id_reset586();     /* make sure it doesn't generate spurious ints */

        /* set number of receive-buffs according to memsize */

        pr->num_recv_buffs = NUM_RECV_BUFFS_16;

        /* dump all the assorted information */

        printk(KERN_INFO "%s: IRQ %d, %sternal xcvr, memory %#lx-%#lx.\n", dev->name,

               dev->irq, dev->if_port ? "ex" : "in",

               dev->mem_start, dev->mem_end - 1);

        /* The hardware address for the 3c523 is stored in the first six

           bytes of the IO address. */

        printk(KERN_INFO "%s: hardware address ", dev->name);

        for (i = 0; i < 6; i++) {

                dev->dev_addr[i] = inb(dev->base_addr + i);

                printk(" %02x", dev->dev_addr[i]);

        }

        printk("\n");

        dev->open = &elmc_open;

        dev->stop = &elmc_close;

        dev->get_stats = &elmc_get_stats;

        dev->hard_start_xmit = &elmc_send_packet;

        dev->tx_timeout = &elmc_timeout;

        dev->watchdog_timeo = HZ;

#ifdef ELMC_MULTICAST

        dev->set_multicast_list = &set_multicast_list;

#else

        dev->set_multicast_list = NULL;

#endif

        dev->ethtool_ops = &netdev_ethtool_ops;

        ether_setup(dev);

        /* note that we haven't actually requested the IRQ from the kernel.

           That gets done in elmc_open().  I'm not sure that's such a good idea,

           but it works, so I'll go with it. */

#ifndef ELMC_MULTICAST

        dev->flags&=~IFF_MULTICAST;     /* Multicast doesn't work */

#endif

        return 0;

err_out:

        release_region(dev->base_addr, ELMC_IO_EXTENT);

        return retval;

}

/**********************************************

 * init the chip (elmc-interrupt should be disabled?!)

 * needs a correct 'allocated' memory

 */

static int init586(struct net_device *dev)

{

        void *ptr;

        unsigned long s;

        int i, result = 0;

        struct priv *p = (struct priv *) dev->priv;

        volatile struct configure_cmd_struct *cfg_cmd;

        volatile struct iasetup_cmd_struct *ias_cmd;

        volatile struct tdr_cmd_struct *tdr_cmd;

        volatile struct mcsetup_cmd_struct *mc_cmd;

        struct dev_mc_list *dmi = dev->mc_list;

        int num_addrs = dev->mc_count;

        ptr = (void *) ((char *) p->scb + sizeof(struct scb_struct));

        cfg_cmd = (struct configure_cmd_struct *) ptr;  /* configure-command */

        cfg_cmd->cmd_status = 0;

        cfg_cmd->cmd_cmd = CMD_CONFIGURE | CMD_LAST;

        cfg_cmd->cmd_link = 0xffff;

        cfg_cmd->byte_cnt = 0x0a;       /* number of cfg bytes */

        cfg_cmd->fifo = 0x08;   /* fifo-limit (8=tx:32/rx:64) */

        cfg_cmd->sav_bf = 0x40; /* hold or discard bad recv frames (bit 7) */

        cfg_cmd->adr_len = 0x2e;        /* addr_len |!src_insert |pre-len |loopback */

        cfg_cmd->priority = 0x00;

        cfg_cmd->ifs = 0x60;

        cfg_cmd->time_low = 0x00;

        cfg_cmd->time_high = 0xf2;

        cfg_cmd->promisc = 0;

        if (dev->flags & (IFF_ALLMULTI | IFF_PROMISC)) {

                cfg_cmd->promisc = 1;

                dev->flags |= IFF_PROMISC;

        }

        cfg_cmd->carr_coll = 0x00;

        p->scb->cbl_offset = make16(cfg_cmd);

        p->scb->cmd = CUC_START;        /* cmd.-unit start */

        elmc_id_attn586();

        s = jiffies;            /* warning: only active with interrupts on !! */

        while (!(cfg_cmd->cmd_status & STAT_COMPL)) {

                if (jiffies - s > 30*HZ/100)

                        break;

        }

        if ((cfg_cmd->cmd_status & (STAT_OK | STAT_COMPL)) != (STAT_COMPL | STAT_OK)) {

                printk(KERN_WARNING "%s (elmc): configure command failed: %x\n", dev->name, cfg_cmd->cmd_status);

                return 1;

        }

        /*

         * individual address setup

         */

        ias_cmd = (struct iasetup_cmd_struct *) ptr;

        ias_cmd->cmd_status = 0;

        ias_cmd->cmd_cmd = CMD_IASETUP | CMD_LAST;

        ias_cmd->cmd_link = 0xffff;

        memcpy((char *) &ias_cmd->iaddr, (char *) dev->dev_addr, ETH_ALEN);

        p->scb->cbl_offset = make16(ias_cmd);

        p->scb->cmd = CUC_START;        /* cmd.-unit start */

        elmc_id_attn586();

        s = jiffies;

        while (!(ias_cmd->cmd_status & STAT_COMPL)) {

                if (jiffies - s > 30*HZ/100)

                        break;

        }

        if ((ias_cmd->cmd_status & (STAT_OK | STAT_COMPL)) != (STAT_OK | STAT_COMPL)) {

                printk(KERN_WARNING "%s (elmc): individual address setup command failed: %04x\n", dev->name, ias_cmd->cmd_status);

                return 1;

        }

        /*