C++ probe_irq_on函数代码示例

/*
 * We cannot (yet) probe for an IO mapped card, although we can check that
 * it's where we were told it was, and even do autoirq.
 */
static int __init com20020isa_probe(struct net_device *dev)
{
	int ioaddr;
	unsigned long airqmask;
	struct arcnet_local *lp = dev->priv;

#ifndef MODULE
	arcnet_init();
#endif

	BUGLVL(D_NORMAL) printk(VERSION);

	ioaddr = dev->base_addr;
	if (!ioaddr) {
		BUGMSG(D_NORMAL, "No autoprobe (yet) for IO mapped cards; you "
		       "must specify the base address!\n");
		return -ENODEV;
	}
	if (check_region(ioaddr, ARCNET_TOTAL_SIZE)) {
		BUGMSG(D_NORMAL, "IO region %xh-%xh already allocated.\n",
		       ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
		return -ENXIO;
	}
	if (ASTATUS() == 0xFF) {
		BUGMSG(D_NORMAL, "IO address %x empty\n", ioaddr);
		return -ENODEV;
	}
	if (com20020_check(dev))
		return -ENODEV;

	if (!dev->irq) {
		/* if we do this, we're sure to get an IRQ since the
		 * card has just reset and the NORXflag is on until
		 * we tell it to start receiving.
		 */
		BUGMSG(D_INIT_REASONS, "intmask was %02Xh\n", inb(_INTMASK));
		outb(0, _INTMASK);
		airqmask = probe_irq_on();
		outb(NORXflag, _INTMASK);
		udelay(1);
		outb(0, _INTMASK);
		dev->irq = probe_irq_off(airqmask);

		if (dev->irq <= 0) {
			BUGMSG(D_INIT_REASONS, "Autoprobe IRQ failed first time\n");
			airqmask = probe_irq_on();
			outb(NORXflag, _INTMASK);
			udelay(5);
			outb(0, _INTMASK);
			dev->irq = probe_irq_off(airqmask);
			if (dev->irq <= 0) {
				BUGMSG(D_NORMAL, "Autoprobe IRQ failed.\n");
				return -ENODEV;
			}
		}
	}

	lp->card_name = "ISA COM20020";
	return com20020_found(dev, 0);
}

void short_kernelprobe(void)
{
    int count = 0;
    do {
        unsigned long mask;

        mask = probe_irq_on();
        outb_p(0x10,short_base+2); /* enable reporting */
        outb_p(0x00,short_base);   /* clear the bit */
        outb_p(0xFF,short_base);   /* set the bit: interrupt! */
        outb_p(0x00,short_base+2); /* disable reporting */
        udelay(5);  /* give it some time */
        short_irq = probe_irq_off(mask);

        if (short_irq == 0) { /* none of them? */
            printk(KERN_INFO "short: no irq reported by probe\n");
            short_irq = -1;
        }
        /*
         * if more than one line has been activated, the result is
         * negative. We should service the interrupt (no need for lpt port)
         * and loop over again. Loop at most five times, then give up
         */
    } while (short_irq < 0 && count++ < 5);
    if (short_irq < 0)
        printk("short: probe failed %i times, giving up\n", count);
}

static int	eepro_grab_irq(struct net_device *dev)
{
	static const int irqlist[] = { 3, 4, 5, 7, 9, 10, 11, 12, 0 };
	const int *irqp = irqlist;
	int temp_reg, ioaddr = dev->base_addr;

	eepro_sw2bank1(ioaddr); /* be CAREFUL, BANK 1 now */

	/* Enable the interrupt line. */
	eepro_en_intline(ioaddr);

	/* be CAREFUL, BANK 0 now */
	eepro_sw2bank0(ioaddr);

	/* clear all interrupts */
	eepro_clear_int(ioaddr);

	/* Let EXEC event to interrupt */
	eepro_en_intexec(ioaddr);

	do {
		eepro_sw2bank1(ioaddr); /* be CAREFUL, BANK 1 now */

		temp_reg = inb(ioaddr + INT_NO_REG);
		outb((temp_reg & 0xf8) | irqrmap[*irqp], ioaddr + INT_NO_REG);

		eepro_sw2bank0(ioaddr); /* Switch back to Bank 0 */

		if (request_irq (*irqp, NULL, IRQF_SHARED, "bogus", dev) != EBUSY) {
			unsigned long irq_mask;
			/* Twinkle the interrupt, and check if it's seen */
			irq_mask = probe_irq_on();

			eepro_diag(ioaddr); /* RESET the 82595 */
			mdelay(20);

			if (*irqp == probe_irq_off(irq_mask))  /* It's a good IRQ line */
				break;

			/* clear all interrupts */
			eepro_clear_int(ioaddr);
		}
	} while (*++irqp);

	eepro_sw2bank1(ioaddr); /* Switch back to Bank 1 */

	/* Disable the physical interrupt line. */
	eepro_dis_intline(ioaddr);

	eepro_sw2bank0(ioaddr); /* Switch back to Bank 0 */

	/* Mask all the interrupts. */
	eepro_dis_int(ioaddr);

	/* clear all interrupts */
	eepro_clear_int(ioaddr);

	return dev->irq;
}

static int g_NCR5380_probe_irq(struct Scsi_Host *instance)
{
	struct NCR5380_hostdata *hostdata = shost_priv(instance);
	int irq_mask, irq;

	NCR5380_read(RESET_PARITY_INTERRUPT_REG);
	irq_mask = probe_irq_on();
	g_NCR5380_trigger_irq(instance);
	irq = probe_irq_off(irq_mask);
	NCR5380_read(RESET_PARITY_INTERRUPT_REG);

	if (irq <= 0)
		return NO_IRQ;
	return irq;
}

/*
 * We cannot (yet) probe for an IO mapped card, although we can check that
 * it's where we were told it was, and even do autoirq.
 */
static int __init com20020isa_probe(struct net_device *dev)
{
	int ioaddr;
	unsigned long airqmask;
	struct arcnet_local *lp = netdev_priv(dev);
	int err;

	BUGLVL(D_NORMAL) printk(VERSION);

	ioaddr = dev->base_addr;
	if (!ioaddr) {
		BUGMSG(D_NORMAL, "No autoprobe (yet) for IO mapped cards; you "
		       "must specify the base address!\n");
		return -ENODEV;
	}
	if (!request_region(ioaddr, ARCNET_TOTAL_SIZE, "arcnet (COM20020)")) {
		BUGMSG(D_NORMAL, "IO region %xh-%xh already allocated.\n",
		       ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
		return -ENXIO;
	}
	if (ASTATUS() == 0xFF) {
		BUGMSG(D_NORMAL, "IO address %x empty\n", ioaddr);
		err = -ENODEV;
		goto out;
	}
	if (com20020_check(dev)) {
		err = -ENODEV;
		goto out;
	}

	if (!dev->irq) {
		/* if we do this, we're sure to get an IRQ since the
		 * card has just reset and the NORXflag is on until
		 * we tell it to start receiving.
		 */
		BUGMSG(D_INIT_REASONS, "intmask was %02Xh\n", inb(_INTMASK));
		outb(0, _INTMASK);
		airqmask = probe_irq_on();
		outb(NORXflag, _INTMASK);
		udelay(1);
		outb(0, _INTMASK);
		dev->irq = probe_irq_off(airqmask);

<<<<<<< HEAD

/*
 * Try to probe our interrupt, rather than relying on lots of
 * hard-coded machine dependencies.
 */
static int ucb1400_ts_detect_irq(struct ucb1400_ts *ucb,
					   struct platform_device *pdev)
{
	unsigned long mask, timeout;

	mask = probe_irq_on();

	/* Enable the ADC interrupt. */
	ucb1400_reg_write(ucb->ac97, UCB_IE_RIS, UCB_IE_ADC);
	ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, UCB_IE_ADC);
	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0xffff);
	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);

	/* Cause an ADC interrupt. */
	ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, UCB_ADC_ENA);
	ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, UCB_ADC_ENA | UCB_ADC_START);

	/* Wait for the conversion to complete. */
	timeout = jiffies + HZ/2;
	while (!(ucb1400_reg_read(ucb->ac97, UCB_ADC_DATA) &
						UCB_ADC_DAT_VALID)) {
		cpu_relax();
		if (time_after(jiffies, timeout)) {
			dev_err(&pdev->dev, "timed out in IRQ probe\n");
			probe_irq_off(mask);
			return -ENODEV;
		}
	}
	ucb1400_reg_write(ucb->ac97, UCB_ADC_CR, 0);

	/* Disable and clear interrupt. */
	ucb1400_reg_write(ucb->ac97, UCB_IE_RIS, 0);
	ucb1400_reg_write(ucb->ac97, UCB_IE_FAL, 0);
	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0xffff);
	ucb1400_reg_write(ucb->ac97, UCB_IE_CLEAR, 0);

	/* Read triggered interrupt. */
	ucb->irq = probe_irq_off(mask);
	if (ucb->irq < 0 || ucb->irq == NO_IRQ)
		return -ENODEV;

	return 0;
}

/*
 * Try to probe our interrupt, rather than relying on lots of
 * hard-coded machine dependencies.  For reference, the expected
 * IRQ mappings are:
 *
 *  	Machine		Default IRQ
 *	adsbitsy	IRQ_GPCIN4
 *	cerf		IRQ_GPIO_UCB1200_IRQ
 *	flexanet	IRQ_GPIO_GUI
 *	freebird	IRQ_GPIO_FREEBIRD_UCB1300_IRQ
 *	graphicsclient	ADS_EXT_IRQ(8)
 *	graphicsmaster	ADS_EXT_IRQ(8)
 *	lart		LART_IRQ_UCB1200
 *	omnimeter	IRQ_GPIO23
 *	pfs168		IRQ_GPIO_UCB1300_IRQ
 *	simpad		IRQ_GPIO_UCB1300_IRQ
 *	shannon		SHANNON_IRQ_GPIO_IRQ_CODEC
 *	yopy		IRQ_GPIO_UCB1200_IRQ
 */
static int __init ucb1x00_detect_irq(struct ucb1x00 *ucb)
{
	unsigned long mask;

	mask = probe_irq_on();
	if (!mask)
		return NO_IRQ;

	/*
	 * Enable the ADC interrupt.
	 */
	ucb1x00_reg_write(ucb, UCB_IE_RIS, UCB_IE_ADC);
	ucb1x00_reg_write(ucb, UCB_IE_FAL, UCB_IE_ADC);
	ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0xffff);
	ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0);

	/*
	 * Cause an ADC interrupt.
	 */
	ucb1x00_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA);
	ucb1x00_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA | UCB_ADC_START);

	/*
	 * Wait for the conversion to complete.
	 */
	while ((ucb1x00_reg_read(ucb, UCB_ADC_DATA) & UCB_ADC_DAT_VAL) == 0);
	ucb1x00_reg_write(ucb, UCB_ADC_CR, 0);

	/*
	 * Disable and clear interrupt.
	 */
	ucb1x00_reg_write(ucb, UCB_IE_RIS, 0);
	ucb1x00_reg_write(ucb, UCB_IE_FAL, 0);
	ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0xffff);
	ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0);

	/*
	 * Read triggered interrupt.
	 */
	return probe_irq_off(mask);
}

static int
el2_open(struct net_device *dev)
{
    int retval = -EAGAIN;

    if (dev->irq < 2) {
	int irqlist[] = {5, 9, 3, 4, 0};
	int *irqp = irqlist;

	outb(EGACFR_NORM, E33G_GACFR);	/* Enable RAM and interrupts. */
	do {
	    if (request_irq (*irqp, NULL, 0, "bogus", dev) != -EBUSY) {
		/* Twinkle the interrupt, and check if it's seen. */
		unsigned long cookie = probe_irq_on();
		outb_p(0x04 << ((*irqp == 9) ? 2 : *irqp), E33G_IDCFR);
		outb_p(0x00, E33G_IDCFR);
		if (*irqp == probe_irq_off(cookie)	/* It's a good IRQ line! */
		    && ((retval = request_irq(dev->irq = *irqp,
		    eip_interrupt, 0, dev->name, dev)) == 0))
		    break;
	    }
	} while (*++irqp);
	if (*irqp == 0) {
	    outb(EGACFR_IRQOFF, E33G_GACFR);	/* disable interrupts. */
	    return retval;
	}
    } else {
	if ((retval = request_irq(dev->irq, eip_interrupt, 0, dev->name, dev))) {
	    return retval;
	}
    }

    el2_init_card(dev);
    eip_open(dev);
    return 0;
}

//.........这里部分代码省略.........
	BUG_ON(ucb->ts_task);

	ucb->ts_task = kthread_run(ucb1400_ts_thread, ucb, "UCB1400_ts");
	if (IS_ERR(ucb->ts_task)) {
		ret = PTR_ERR(ucb->ts_task);
		ucb->ts_task = NULL;
	}

	return ret;
}

static void ucb1400_ts_close(struct input_dev *idev)
{
	struct ucb1400 *ucb = input_get_drvdata(idev);

	if (ucb->ts_task)
	{
		kthread_stop(ucb->ts_task);
		while(ucb->ts_task!=NULL) udelay(100);
	}
	ucb1400_ts_irq_disable(ucb);
	ucb1400_reg_write(ucb, UCB_TS_CR, 0);
}

#ifdef CONFIG_PM
static int ucb1400_ts_resume(struct device *dev)
{
	struct ucb1400 *ucb = dev_get_drvdata(dev);

	if (ucb->ts_task) {
		/*
		 * Restart the TS thread to ensure the
		 * TS interrupt mode is set up again
		 * after sleep.
		 */
		ucb->ts_restart = 1;
		wake_up(&ucb->ts_wait);
	}
	return 0;
}
#else
#define ucb1400_ts_resume NULL
#endif

#ifndef NO_IRQ
#define NO_IRQ	0
#endif

/*
 * Try to probe our interrupt, rather than relying on lots of
 * hard-coded machine dependencies.
 */
static int ucb1400_detect_irq(struct ucb1400 *ucb)
{
	unsigned long mask, timeout;
#if CONFIG_TOUCHSCREEN_UCB1400_IRQ == 0
	mask = probe_irq_on();
	if (!mask) {
		probe_irq_off(mask);
		return -EBUSY;
	}

	/* Enable the ADC interrupt. */
	ucb1400_reg_write(ucb, UCB_IE_RIS, UCB_IE_ADC);
	ucb1400_reg_write(ucb, UCB_IE_FAL, UCB_IE_ADC);
	ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0xffff);
	ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0);

	/* Cause an ADC interrupt. */
	ucb1400_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA);
	ucb1400_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA | UCB_ADC_START);

	/* Wait for the conversion to complete. */
	timeout = jiffies + HZ/2;
	while (!(ucb1400_reg_read(ucb, UCB_ADC_DATA) & UCB_ADC_DAT_VALID)) {
		cpu_relax();
		if (time_after(jiffies, timeout)) {
			printk(KERN_ERR "ucb1400: timed out in IRQ probe\n");
			probe_irq_off(mask);
			return -ENODEV;
		}
	}
	ucb1400_reg_write(ucb, UCB_ADC_CR, 0);

	/* Disable and clear interrupt. */
	ucb1400_reg_write(ucb, UCB_IE_RIS, 0);
	ucb1400_reg_write(ucb, UCB_IE_FAL, 0);
	ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0xffff);
	ucb1400_reg_write(ucb, UCB_IE_CLEAR, 0);

	/* Read triggered interrupt. */
	ucb->irq = probe_irq_off(mask);
#else
	ucb->irq = CONFIG_TOUCHSCREEN_UCB1400_IRQ;
#endif
	if (ucb->irq < 0 || ucb->irq == NO_IRQ)
		return -ENODEV;

	return 0;
}

static int __init com20020isa_probe(struct net_device *dev)
{
	int ioaddr;
	unsigned long airqmask;
	struct arcnet_local *lp = netdev_priv(dev);
	int err;

	BUGLVL(D_NORMAL) printk(VERSION);

	ioaddr = dev->base_addr;
	if (!ioaddr) {
		BUGMSG(D_NORMAL, "No autoprobe (yet) for IO mapped cards; you "
		       "must specify the base address!\n");
		return -ENODEV;
	}
	if (!request_region(ioaddr, ARCNET_TOTAL_SIZE, "arcnet (COM20020)")) {
		BUGMSG(D_NORMAL, "IO region %xh-%xh already allocated.\n",
		       ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
		return -ENXIO;
	}
	if (ASTATUS() == 0xFF) {
		BUGMSG(D_NORMAL, "IO address %x empty\n", ioaddr);
		err = -ENODEV;
		goto out;
	}
	if (com20020_check(dev)) {
		err = -ENODEV;
		goto out;
	}

	if (!dev->irq) {
		BUGMSG(D_INIT_REASONS, "intmask was %02Xh\n", inb(_INTMASK));
		outb(0, _INTMASK);
		airqmask = probe_irq_on();
		outb(NORXflag, _INTMASK);
		udelay(1);
		outb(0, _INTMASK);
		dev->irq = probe_irq_off(airqmask);

		if ((int)dev->irq <= 0) {
			BUGMSG(D_INIT_REASONS, "Autoprobe IRQ failed first time\n");
			airqmask = probe_irq_on();
			outb(NORXflag, _INTMASK);
			udelay(5);
			outb(0, _INTMASK);
			dev->irq = probe_irq_off(airqmask);
			if ((int)dev->irq <= 0) {
				BUGMSG(D_NORMAL, "Autoprobe IRQ failed.\n");
				err = -ENODEV;
				goto out;
			}
		}
	}

	lp->card_name = "ISA COM20020";
	if ((err = com20020_found(dev, 0)) != 0)
		goto out;

	return 0;

out:
	release_region(ioaddr, ARCNET_TOTAL_SIZE);
	return err;
}

//.........这里部分代码省略.........
	}

	printk(KERN_INFO "%s: NI5210 found at %#3lx, ",
				dev->name, dev->base_addr);

	/*
                                           
  */
#ifdef MODULE
	size = dev->mem_end - dev->mem_start;
	if (size != 0x2000 && size != 0x4000) {
		printk("\n");
		printk(KERN_ERR "%s: Invalid memory size %d. Allowed is 0x2000 or 0x4000 bytes.\n", dev->name, size);
		retval = -ENODEV;
		goto out;
	}
	if (!check586(dev, size)) {
		printk(KERN_ERR "?memcheck, Can't find memory at 0x%lx with size %d!\n", dev->mem_start, size);
		retval = -ENODEV;
		goto out;
	}
#else
	if (dev->mem_start != 0) {
		/*                   */
		size = 0x4000; /*                   */
		if (!check586(dev, size)) {
			size = 0x2000; /*                  */
			if (!check586(dev, size)) {
				printk(KERN_ERR "?memprobe, Can't find memory at 0x%lx!\n", dev->mem_start);
				retval = -ENODEV;
				goto out;
			}
		}
	} else {
		static const unsigned long memaddrs[] = {
			0xc8000, 0xca000, 0xcc000, 0xce000, 0xd0000, 0xd2000,
			0xd4000, 0xd6000, 0xd8000, 0xda000, 0xdc000, 0
		};
		for (i = 0;; i++) {
			if (!memaddrs[i]) {
				printk(KERN_ERR "?memprobe, Can't find io-memory!\n");
				retval = -ENODEV;
				goto out;
			}
			dev->mem_start = memaddrs[i];
			size = 0x2000; /*                  */
			if (check586(dev, size))
				/*          */
				break;
			size = 0x4000; /*                   */
			if (check586(dev, size))
				/*           */
				break;
		}
	}
	/*                                  */
	dev->mem_end = dev->mem_start + size;
#endif

	alloc586(dev);

	/*                                                  */
	if (size == 0x2000)
		priv->num_recv_buffs = NUM_RECV_BUFFS_8;
	else
		priv->num_recv_buffs = NUM_RECV_BUFFS_16;

	printk(KERN_DEBUG "Memaddr: 0x%lx, Memsize: %d, ",
				dev->mem_start, size);

	if (dev->irq < 2) {
		unsigned long irq_mask;

		irq_mask = probe_irq_on();
		ni_reset586();
		ni_attn586();

		mdelay(20);
		dev->irq = probe_irq_off(irq_mask);
		if (!dev->irq) {
			printk("?autoirq, Failed to detect IRQ line!\n");
			retval = -EAGAIN;
			iounmap(priv->mapped);
			goto out;
		}
		printk("IRQ %d (autodetected).\n", dev->irq);
	} else {
		if (dev->irq == 2)
			dev->irq = 9;
		printk("IRQ %d (assigned and not checked!).\n", dev->irq);
	}

	dev->netdev_ops		= &ni52_netdev_ops;
	dev->watchdog_timeo	= HZ/20;

	return 0;
out:
	release_region(ioaddr, NI52_TOTAL_SIZE);
	return retval;
}

//.........这里部分代码省略.........
	outw( SEEQCMD_SET_ALL_OFF, SEEQ_CMD);

	if (net_debug) {
		printk("seeq8005: prom sum = 0x%08x\n",j);
		for(j=0; j<32; j+=16) {
			printk("seeq8005: prom %02x: ",j);
			for(i=0;i<16;i++) {
				printk("%02x ",SA_prom[j|i]);
			}
			printk(" ");
			for(i=0;i<16;i++) {
				if ((SA_prom[j|i]>31)&&(SA_prom[j|i]<127)) {
					printk("%c", SA_prom[j|i]);
				} else {
					printk(" ");
				}
			}
			printk("\n");
		}
	}

#if 0
	if (net_debug>1) {					
		printk("seeq8005: testing packet buffer ... ");
		outw( SEEQCFG1_BUFFER_BUFFER, SEEQ_CFG1);
		outw( SEEQCMD_FIFO_WRITE | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
		outw( 0 , SEEQ_DMAAR);
		for(i=0;i<32768;i++) {
			outw(0x5a5a, SEEQ_BUFFER);
		}
		j=jiffies+HZ;
		while ( ((inw(SEEQ_STATUS) & SEEQSTAT_FIFO_EMPTY) != SEEQSTAT_FIFO_EMPTY) && time_before(jiffies, j) )
			mb();
		outw( 0 , SEEQ_DMAAR);
		while ( ((inw(SEEQ_STATUS) & SEEQSTAT_WINDOW_INT) != SEEQSTAT_WINDOW_INT) && time_before(jiffies, j+HZ))
			mb();
		if ( (inw(SEEQ_STATUS) & SEEQSTAT_WINDOW_INT) == SEEQSTAT_WINDOW_INT)
			outw( SEEQCMD_WINDOW_INT_ACK | (inw(SEEQ_STATUS)& SEEQCMD_INT_MASK), SEEQ_CMD);
		outw( SEEQCMD_FIFO_READ | SEEQCMD_SET_ALL_OFF, SEEQ_CMD);
		j=0;
		for(i=0;i<32768;i++) {
			if (inw(SEEQ_BUFFER) != 0x5a5a)
				j++;
		}
		if (j) {
			printk("%i\n",j);
		} else {
			printk("ok.\n");
		}
	}
#endif

	if (net_debug  &&  version_printed++ == 0)
		printk(version);

	printk("%s: %s found at %#3x, ", dev->name, "seeq8005", ioaddr);

	
	dev->base_addr = ioaddr;
	dev->irq = irq;

	
	for (i = 0; i < 6; i++)
		dev->dev_addr[i] = SA_prom[i+6];
	printk("%pM", dev->dev_addr);

	if (dev->irq == 0xff)
		;			
	else if (dev->irq < 2) {	
		unsigned long cookie = probe_irq_on();

		outw( SEEQCMD_RX_INT_EN | SEEQCMD_SET_RX_ON | SEEQCMD_SET_RX_OFF, SEEQ_CMD );

		dev->irq = probe_irq_off(cookie);

		if (net_debug >= 2)
			printk(" autoirq is %d\n", dev->irq);
	} else if (dev->irq == 2)
	  dev->irq = 9;

#if 0
	{
		 int irqval = request_irq(dev->irq, seeq8005_interrupt, 0, "seeq8005", dev);
		 if (irqval) {
			 printk ("%s: unable to get IRQ %d (irqval=%d).\n", dev->name,
					 dev->irq, irqval);
			 retval = -EAGAIN;
			 goto out;
		 }
	}
#endif
	dev->netdev_ops = &seeq8005_netdev_ops;
	dev->watchdog_timeo	= HZ/20;
	dev->flags &= ~IFF_MULTICAST;

	return 0;
out:
	release_region(ioaddr, SEEQ8005_IO_EXTENT);
	return retval;
}

/* device probe routine .. determines if the Tormenta device is present in
   the system */
static int
tor_probe(void)
{
	int			i,status;
	u_char			c1,c2;
	maddr = phys_to_virt(base);

	status = -1; /* default status return is 'not present' */

	clockvals = clockvals_t1;
	datxlt = datxlt_t1;
	chseq = chseq_t1;

	  /* initialize control register */
	setctlreg(MASTERCLOCK);

	   /* init all the registers in first T-1 chip to 0 */
	for(i = 0; i <= 0xff; i++) t1out(1,i,0); /* set register to 0 */
	/* simple test that will fail if tried in an array of standard memory */
	  /* put an 0x55 here */
	t1out(1,0x2b,0x55);
	  /* put an 0xaa here */
	t1out(1,0x2c,0xaa);
	  /* get input from first location */
	c1 = t1in(1,0x2b);
	  /* get input from second location */
	c2 = t1in(1,0x2c);
	  /* see if we read back what we put in */
	if ((c1 == 0x55) && (c2 == 0xaa)) {
		/* We now need to determine card type */
		/* This test is documented in Dallas app note 341 */
		t1out(1, 0x7D, 0);
		t1out(1, 0x36, 0);
		t1out(1, 0x15, 0);
		t1out(1, 0x19, 0);
		t1out(1, 0x23, 0x55);
		c1 = t1in(1, 0x23);  
		if (c1 == 0x55) { /* if this is an E-1 card */
	
			clockvals = clockvals_e1;
			chseq = chseq_e1;
			channels_per_span = 31;
			datxlt = datxlt_e1;
			card_type = TYPE_E1;

			  /* initialize control register */
			setctlreg(MASTERCLOCK);
		}
		/* Try to get the irq if the user didn't specify one */
		if (irq < 1) {
#ifdef LINUX26
			unsigned long irqs;
			unsigned long delay = jiffies + 5;
			irqs = probe_irq_on();
			setctlreg(MASTERCLOCK|INTENA);
			while((long)(jiffies - delay) < 0);
			irq = probe_irq_off(irqs);
#else			
			autoirq_setup(0);
			setctlreg(MASTERCLOCK|INTENA);
			/* Wait a jiffie -- that's plenty of time */
			irq = autoirq_report(5);
#endif			
		}
		/* disable interrupts having gotten one */
		setctlreg(MASTERCLOCK);
		if (irq == 2)
			irq = 9;
		if (irq) {
	  		/* init both STPA's to all silence */
			for(i = 0; i < 32; i++) maddr[i] = 0x7f7f;

			status = 0;	/* found */
			if (debug)
				printk("ISA Tormenta %s Card found at base addr 0x%lx, irq %d\n",
					((card_type == TYPE_E1) ? "E1" : "T1"),
						base,irq);
		} else
			printk("ISA Tormenta %s Card found at base addr 0x%lx, but unable to determine IRQ.  Try using irq= option\n", 
				((card_type == TYPE_E1) ? "E1" : "T1"), base );
	   }
	return status;
}

static int __init elplus_setup(struct net_device *dev)
{
	elp_device *adapter = dev->priv;
	int i, tries, tries1, okay;
	unsigned long timeout;
	unsigned long cookie = 0;
	int err = -ENODEV;

	SET_MODULE_OWNER(dev);

	/*
	 *  setup adapter structure
	 */

	dev->base_addr = elp_autodetect(dev);
	if (!dev->base_addr)
		return -ENODEV;

	adapter->send_pcb_semaphore = 0;

	for (tries1 = 0; tries1 < 3; tries1++) {
		outb_control((adapter->hcr_val | CMDE) & ~DIR, dev);
		/* First try to write just one byte, to see if the card is
		 * responding at all normally.
		 */
		timeout = jiffies + 5*HZ/100;
		okay = 0;
		while (time_before(jiffies, timeout) && !(inb_status(dev->base_addr) & HCRE));
		if ((inb_status(dev->base_addr) & HCRE)) {
			outb_command(0, dev->base_addr);	/* send a spurious byte */
			timeout = jiffies + 5*HZ/100;
			while (time_before(jiffies, timeout) && !(inb_status(dev->base_addr) & HCRE));
			if (inb_status(dev->base_addr) & HCRE)
				okay = 1;
		}
		if (!okay) {
			/* Nope, it's ignoring the command register.  This means that
			 * either it's still booting up, or it's died.
			 */
			printk(KERN_ERR "%s: command register wouldn't drain, ", dev->name);
			if ((inb_status(dev->base_addr) & 7) == 3) {
				/* If the adapter status is 3, it *could* still be booting.
				 * Give it the benefit of the doubt for 10 seconds.
				 */
				printk("assuming 3c505 still starting\n");
				timeout = jiffies + 10*HZ;
				while (time_before(jiffies, timeout) && (inb_status(dev->base_addr) & 7));
				if (inb_status(dev->base_addr) & 7) {
					printk(KERN_ERR "%s: 3c505 failed to start\n", dev->name);
				} else {
					okay = 1;  /* It started */
				}
			} else {
				/* Otherwise, it must just be in a strange
				 * state.  We probably need to kick it.
				 */
				printk("3c505 is sulking\n");
			}
		}
		for (tries = 0; tries < 5 && okay; tries++) {

			/*
			 * Try to set the Ethernet address, to make sure that the board
			 * is working.
			 */
			adapter->tx_pcb.command = CMD_STATION_ADDRESS;
			adapter->tx_pcb.length = 0;
			cookie = probe_irq_on();
			if (!send_pcb(dev, &adapter->tx_pcb)) {
				printk(KERN_ERR "%s: could not send first PCB\n", dev->name);
				probe_irq_off(cookie);
				continue;
			}
			if (!receive_pcb(dev, &adapter->rx_pcb)) {
				printk(KERN_ERR "%s: could not read first PCB\n", dev->name);
				probe_irq_off(cookie);
				continue;
			}
			if ((adapter->rx_pcb.command != CMD_ADDRESS_RESPONSE) ||
			    (adapter->rx_pcb.length != 6)) {
				printk(KERN_ERR "%s: first PCB wrong (%d, %d)\n", dev->name, adapter->rx_pcb.command, adapter->rx_pcb.length);
				probe_irq_off(cookie);
				continue;
			}
			goto okay;
		}
		/* It's broken.  Do a hard reset to re-initialise the board,
		 * and try again.
		 */
		printk(KERN_INFO "%s: resetting adapter\n", dev->name);
		outb_control(adapter->hcr_val | FLSH | ATTN, dev);
		outb_control(adapter->hcr_val & ~(FLSH | ATTN), dev);
	}
	printk(KERN_ERR "%s: failed to initialise 3c505\n", dev->name);
	goto out;

      okay:
	if (dev->irq) {		/* Is there a preset IRQ? */
		int rpt = probe_irq_off(cookie);
		if (dev->irq != rpt) {
//.........这里部分代码省略.........

static int __init el1_probe1(struct net_device *dev, int ioaddr)
{
	struct net_local *lp;
	const char *mname;		/* Vendor name */
	unsigned char station_addr[6];
	int autoirq = 0;
	int i;

	/*
	 *	Reserve I/O resource for exclusive use by this driver
	 */

	if (!request_region(ioaddr, EL1_IO_EXTENT, DRV_NAME))
		return -ENODEV;

	/*
	 *	Read the station address PROM data from the special port.
	 */

	for (i = 0; i < 6; i++) {
		outw(i, ioaddr + EL1_DATAPTR);
		station_addr[i] = inb(ioaddr + EL1_SAPROM);
	}
	/*
	 *	Check the first three octets of the S.A. for 3Com's prefix, or
	 *	for the Sager NP943 prefix.
	 */

	if (station_addr[0] == 0x02 && station_addr[1] == 0x60 &&
	    station_addr[2] == 0x8c)
		mname = "3c501";
	else if (station_addr[0] == 0x00 && station_addr[1] == 0x80 &&
		 station_addr[2] == 0xC8)
		mname = "NP943";
	else {
		release_region(ioaddr, EL1_IO_EXTENT);
		return -ENODEV;
	}

	/*
	 *	We auto-IRQ by shutting off the interrupt line and letting it
	 *	float high.
	 */

	dev->irq = irq;

	if (dev->irq < 2) {
		unsigned long irq_mask;

		irq_mask = probe_irq_on();
		inb(RX_STATUS);		/* Clear pending interrupts. */
		inb(TX_STATUS);
		outb(AX_LOOP + 1, AX_CMD);

		outb(0x00, AX_CMD);

		mdelay(20);
		autoirq = probe_irq_off(irq_mask);

		if (autoirq == 0) {
			pr_warning("%s probe at %#x failed to detect IRQ line.\n",
				mname, ioaddr);
			release_region(ioaddr, EL1_IO_EXTENT);
			return -EAGAIN;
		}
	}

	outb(AX_RESET+AX_LOOP, AX_CMD);			/* Loopback mode. */
	dev->base_addr = ioaddr;
	memcpy(dev->dev_addr, station_addr, ETH_ALEN);

	if (mem_start & 0xf)
		el_debug = mem_start & 0x7;
	if (autoirq)
		dev->irq = autoirq;

	pr_info("%s: %s EtherLink at %#lx, using %sIRQ %d.\n",
			dev->name, mname, dev->base_addr,
			autoirq ? "auto":"assigned ", dev->irq);

#ifdef CONFIG_IP_MULTICAST
	pr_warning("WARNING: Use of the 3c501 in a multicast kernel is NOT recommended.\n");
#endif

	if (el_debug)
		pr_debug("%s", version);

	lp = netdev_priv(dev);
	memset(lp, 0, sizeof(struct net_local));
	spin_lock_init(&lp->lock);

	/*
	 *	The EL1-specific entries in the device structure.
	 */

	dev->netdev_ops = &el_netdev_ops;
	dev->watchdog_timeo = HZ;
	dev->ethtool_ops = &netdev_ethtool_ops;
	return 0;
}