drivers/scsi/sim710.c - kernel/skids - Git at Google

 /*
  * sim710.c - Copyright (C) 1999 Richard Hirst <richard@sleepie.demon.co.uk>
  *
  *----------------------------------------------------------------------------
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; either version 2 of the License, or
  *  (at your option) any later version.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  *----------------------------------------------------------------------------
  *
  * MCA card detection code by Trent McNair.
  * Fixes to not explicitly nul bss data from Xavier Bestel.
  * Some multiboard fixes from Rolf Eike Beer.
  * Auto probing of EISA config space from Trevor Hemsley.
  *
  * Rewritten to use 53c700.c by James.Bottomley@SteelEye.com
  *
  */

 #include <linux/module.h>
 #include <linux/slab.h>

 #include <linux/blkdev.h>
 #include <linux/device.h>
 #include <linux/init.h>
 #include <linux/mca.h>
 #include <linux/eisa.h>
 #include <linux/interrupt.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_transport.h>
 #include <scsi/scsi_transport_spi.h>

 #include "53c700.h"


 /* Must be enough for both EISA and MCA */
 #define MAX_SLOTS 8
 static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 };

 static char *sim710;		/* command line passed by insmod */

 MODULE_AUTHOR("Richard Hirst");
 MODULE_DESCRIPTION("Simple NCR53C710 driver");
 MODULE_LICENSE("GPL");

 module_param(sim710, charp, 0);

 #ifdef MODULE
 #define ARG_SEP ' '
 #else
 #define ARG_SEP ','
 #endif

 static __init int
 param_setup(char *str)
 {
 	char *pos = str, *next;
 	int slot = -1;

 	while(pos != NULL && (next = strchr(pos, ':')) != NULL) {
 		int val = (int)simple_strtoul(++next, NULL, 0);

 		if(!strncmp(pos, "slot:", 5))
 			slot = val;
 		else if(!strncmp(pos, "id:", 3)) {
 			if(slot == -1) {
 				printk(KERN_WARNING "sim710: Must specify slot for id parameter\n");
 			} else if(slot >= MAX_SLOTS) {
 				printk(KERN_WARNING "sim710: Illegal slot %d for id %d\n", slot, val);
 			} else {
 				id_array[slot] = val;
 			}
 		}
 		if((pos = strchr(pos, ARG_SEP)) != NULL)
 			pos++;
 	}
 	return 1;
 }
 __setup("sim710=", param_setup);

 static struct scsi_host_template sim710_driver_template = {
 	.name			= "LSI (Symbios) 710 MCA/EISA",
 	.proc_name		= "sim710",
 	.this_id		= 7,
 	.module			= THIS_MODULE,
 };

 static __devinit int
 sim710_probe_common(struct device *dev, unsigned long base_addr,
 		    int irq, int clock, int differential, int scsi_id)
 {
 	struct Scsi_Host * host = NULL;
 	struct NCR_700_Host_Parameters *hostdata =
 		kzalloc(sizeof(struct NCR_700_Host_Parameters),	GFP_KERNEL);

 	printk(KERN_NOTICE "sim710: %s\n", dev_name(dev));
 	printk(KERN_NOTICE "sim710: irq = %d, clock = %d, base = 0x%lx, scsi_id = %d\n",
 	       irq, clock, base_addr, scsi_id);

 	if(hostdata == NULL) {
 		printk(KERN_ERR "sim710: Failed to allocate host data\n");
 		goto out;
 	}

 	if(request_region(base_addr, 64, "sim710") == NULL) {
 		printk(KERN_ERR "sim710: Failed to reserve IO region 0x%lx\n",
 		       base_addr);
 		goto out_free;
 	}

 	/* Fill in the three required pieces of hostdata */
 	hostdata->base = ioport_map(base_addr, 64);
 	hostdata->differential = differential;
 	hostdata->clock = clock;
 	hostdata->chip710 = 1;
 	hostdata->burst_length = 8;

 	/* and register the chip */
 	if((host = NCR_700_detect(&sim710_driver_template, hostdata, dev))
 	   == NULL) {
 		printk(KERN_ERR "sim710: No host detected; card configuration problem?\n");
 		goto out_release;
 	}
 	host->this_id = scsi_id;
 	host->base = base_addr;
 	host->irq = irq;
 	if (request_irq(irq, NCR_700_intr, IRQF_SHARED, "sim710", host)) {
 		printk(KERN_ERR "sim710: request_irq failed\n");
 		goto out_put_host;
 	}

 	dev_set_drvdata(dev, host);
 	scsi_scan_host(host);

 	return 0;

  out_put_host:
 	scsi_host_put(host);
  out_release:
 	release_region(base_addr, 64);
  out_free:
 	kfree(hostdata);
  out:
 	return -ENODEV;
 }

 static __devexit int
 sim710_device_remove(struct device *dev)
 {
 	struct Scsi_Host *host = dev_get_drvdata(dev);
 	struct NCR_700_Host_Parameters *hostdata =
 		(struct NCR_700_Host_Parameters *)host->hostdata[0];

 	scsi_remove_host(host);
 	NCR_700_release(host);
 	kfree(hostdata);
 	free_irq(host->irq, host);
 	release_region(host->base, 64);
 	return 0;
 }

 #ifdef CONFIG_MCA

 /* CARD ID 01BB and 01BA use the same pos values */
 #define MCA_01BB_IO_PORTS { 0x0000, 0x0000, 0x0800, 0x0C00, 0x1000, 0x1400, \
 			    0x1800, 0x1C00, 0x2000, 0x2400, 0x2800, \
 			    0x2C00, 0x3000, 0x3400, 0x3800, 0x3C00, \
 			    0x4000, 0x4400, 0x4800, 0x4C00, 0x5000  }

 #define MCA_01BB_IRQS { 3, 5, 11, 14 }

 /* CARD ID 004f */
 #define MCA_004F_IO_PORTS { 0x0000, 0x0200, 0x0300, 0x0400, 0x0500,  0x0600 }
 #define MCA_004F_IRQS { 5, 9, 14 }

 static short sim710_mca_id_table[] = { 0x01bb, 0x01ba, 0x004f, 0};

 static __init int
 sim710_mca_probe(struct device *dev)
 {
 	struct mca_device *mca_dev = to_mca_device(dev);
 	int slot = mca_dev->slot;
 	int pos[3];
 	unsigned int base;
 	int irq_vector;
 	short id = sim710_mca_id_table[mca_dev->index];
 	static int io_004f_by_pos[] = MCA_004F_IO_PORTS;
 	static int irq_004f_by_pos[] = MCA_004F_IRQS;
 	static int io_01bb_by_pos[] = MCA_01BB_IO_PORTS;
 	static int irq_01bb_by_pos[] = MCA_01BB_IRQS;
 	char *name;
 	int clock;

 	pos[0] = mca_device_read_stored_pos(mca_dev, 2);
 	pos[1] = mca_device_read_stored_pos(mca_dev, 3);
 	pos[2] = mca_device_read_stored_pos(mca_dev, 4);

 	/*
 	 * 01BB & 01BA port base by bits 7,6,5,4,3,2 in pos[2]
 	 *
 	 *    000000  <disabled>   001010  0x2800
 	 *    000001  <invalid>    001011  0x2C00
 	 *    000010  0x0800       001100  0x3000
 	 *    000011  0x0C00       001101  0x3400
 	 *    000100  0x1000       001110  0x3800
 	 *    000101  0x1400       001111  0x3C00
 	 *    000110  0x1800       010000  0x4000
 	 *    000111  0x1C00       010001  0x4400
 	 *    001000  0x2000       010010  0x4800
 	 *    001001  0x2400       010011  0x4C00
 	 *                         010100  0x5000
 	 *
 	 * 00F4 port base by bits 3,2,1 in pos[0]
 	 *
 	 *    000  <disabled>      001    0x200
 	 *    010  0x300           011    0x400
 	 *    100  0x500           101    0x600
 	 *
 	 * 01BB & 01BA IRQ is specified in pos[0] bits 7 and 6:
 	 *
 	 *    00   3               10   11
 	 *    01   5               11   14
 	 *
 	 * 00F4 IRQ specified by bits 6,5,4 in pos[0]
 	 *
 	 *    100   5              101    9
 	 *    110   14
 	 */

 	if (id == 0x01bb || id == 0x01ba) {
 		base = io_01bb_by_pos[(pos[2] & 0xFC) >> 2];
 		irq_vector =
 			irq_01bb_by_pos[((pos[0] & 0xC0) >> 6)];

 		clock = 50;
 		if (id == 0x01bb)
 			name = "NCR 3360/3430 SCSI SubSystem";
 		else
 			name = "NCR Dual SIOP SCSI Host Adapter Board";
 	} else if ( id == 0x004f ) {
 		base = io_004f_by_pos[((pos[0] & 0x0E) >> 1)];
 		irq_vector =
 			irq_004f_by_pos[((pos[0] & 0x70) >> 4) - 4];
 		clock = 50;
 		name = "NCR 53c710 SCSI Host Adapter Board";
 	} else {
 		return -ENODEV;
 	}
 	mca_device_set_name(mca_dev, name);
 	mca_device_set_claim(mca_dev, 1);
 	base = mca_device_transform_ioport(mca_dev, base);
 	irq_vector = mca_device_transform_irq(mca_dev, irq_vector);

 	return sim710_probe_common(dev, base, irq_vector, clock,
 				   0, id_array[slot]);
 }

 static struct mca_driver sim710_mca_driver = {
 	.id_table		= sim710_mca_id_table,
 	.driver = {
 		.name		= "sim710",
 		.bus		= &mca_bus_type,
 		.probe		= sim710_mca_probe,
 		.remove		= __devexit_p(sim710_device_remove),
 	},
 };

 #endif /* CONFIG_MCA */

 #ifdef CONFIG_EISA
 static struct eisa_device_id sim710_eisa_ids[] = {
 	{ "CPQ4410" },
 	{ "CPQ4411" },
 	{ "HWP0C80" },
 	{ "" }
 };
 MODULE_DEVICE_TABLE(eisa, sim710_eisa_ids);

 static __init int
 sim710_eisa_probe(struct device *dev)
 {
 	struct eisa_device *edev = to_eisa_device(dev);
 	unsigned long io_addr = edev->base_addr;
 	char eisa_cpq_irqs[] = { 11, 14, 15, 10, 9, 0 };
 	char eisa_hwp_irqs[] = { 3, 4, 5, 7, 12, 10, 11, 0};
 	char *eisa_irqs;
 	unsigned char irq_index;
 	unsigned char irq, differential = 0, scsi_id = 7;

 	if(strcmp(edev->id.sig, "HWP0C80") == 0) {
 		__u8 val;
 		eisa_irqs =  eisa_hwp_irqs;
 		irq_index = (inb(io_addr + 0xc85) & 0x7) - 1;

 		val = inb(io_addr + 0x4);
 		scsi_id = ffs(val) - 1;

 		if(scsi_id > 7 || (val & ~(1<<scsi_id)) != 0) {
 			printk(KERN_ERR "sim710.c, EISA card %s has incorrect scsi_id, setting to 7\n", dev_name(dev));
 			scsi_id = 7;
 		}
 	} else {
 		eisa_irqs = eisa_cpq_irqs;
 		irq_index = inb(io_addr + 0xc88) & 0x07;
 	}

 	if(irq_index >= strlen(eisa_irqs)) {
 		printk("sim710.c: irq nasty\n");
 		return -ENODEV;
 	}

 	irq = eisa_irqs[irq_index];

 	return sim710_probe_common(dev, io_addr, irq, 50,
 				   differential, scsi_id);
 }

 static struct eisa_driver sim710_eisa_driver = {
 	.id_table		= sim710_eisa_ids,
 	.driver = {
 		.name		= "sim710",
 		.probe		= sim710_eisa_probe,
 		.remove		= __devexit_p(sim710_device_remove),
 	},
 };
 #endif /* CONFIG_EISA */

 static int __init sim710_init(void)
 {
 	int err = -ENODEV;

 #ifdef MODULE
 	if (sim710)
 		param_setup(sim710);
 #endif

 #ifdef CONFIG_MCA
 	err = mca_register_driver(&sim710_mca_driver);
 #endif

 #ifdef CONFIG_EISA
 	err = eisa_driver_register(&sim710_eisa_driver);
 #endif
 	/* FIXME: what we'd really like to return here is -ENODEV if
 	 * no devices have actually been found.  Instead, the err
 	 * above actually only reports problems with kobject_register,
 	 * so for the moment return success */

 	return 0;
 }

 static void __exit sim710_exit(void)
 {
 #ifdef CONFIG_MCA
 	if (MCA_bus)
 		mca_unregister_driver(&sim710_mca_driver);
 #endif

 #ifdef CONFIG_EISA
 	eisa_driver_unregister(&sim710_eisa_driver);
 #endif
 }

 module_init(sim710_init);
 module_exit(sim710_exit);
	/*
	* sim710.c - Copyright (C) 1999 Richard Hirst <richard@sleepie.demon.co.uk>
	*
	*----------------------------------------------------------------------------
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	*----------------------------------------------------------------------------
	*
	* MCA card detection code by Trent McNair.
	* Fixes to not explicitly nul bss data from Xavier Bestel.
	* Some multiboard fixes from Rolf Eike Beer.
	* Auto probing of EISA config space from Trevor Hemsley.
	*
	* Rewritten to use 53c700.c by James.Bottomley@SteelEye.com
	*
	*/

	#include <linux/module.h>
	#include <linux/slab.h>

	#include <linux/blkdev.h>
	#include <linux/device.h>
	#include <linux/init.h>
	#include <linux/mca.h>
	#include <linux/eisa.h>
	#include <linux/interrupt.h>
	#include <scsi/scsi_host.h>
	#include <scsi/scsi_device.h>
	#include <scsi/scsi_transport.h>
	#include <scsi/scsi_transport_spi.h>

	#include "53c700.h"


	/* Must be enough for both EISA and MCA */
	#define MAX_SLOTS 8
	static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 };

	static char sim710; / command line passed by insmod */

	MODULE_AUTHOR("Richard Hirst");
	MODULE_DESCRIPTION("Simple NCR53C710 driver");
	MODULE_LICENSE("GPL");

	module_param(sim710, charp, 0);

	#ifdef MODULE
	#define ARG_SEP ' '
	#else
	#define ARG_SEP ','
	#endif

	static __init int
	param_setup(char *str)
	{
	char pos = str, next;
	int slot = -1;

	while(pos != NULL && (next = strchr(pos, ':')) != NULL) {
	int val = (int)simple_strtoul(++next, NULL, 0);

	if(!strncmp(pos, "slot:", 5))
	slot = val;
	else if(!strncmp(pos, "id:", 3)) {
	if(slot == -1) {
	printk(KERN_WARNING "sim710: Must specify slot for id parameter\n");
	} else if(slot >= MAX_SLOTS) {
	printk(KERN_WARNING "sim710: Illegal slot %d for id %d\n", slot, val);
	} else {
	id_array[slot] = val;
	}
	}
	if((pos = strchr(pos, ARG_SEP)) != NULL)
	pos++;
	}
	return 1;
	}
	__setup("sim710=", param_setup);

	static struct scsi_host_template sim710_driver_template = {
	.name = "LSI (Symbios) 710 MCA/EISA",
	.proc_name = "sim710",
	.this_id = 7,
	.module = THIS_MODULE,
	};

	static __devinit int
	sim710_probe_common(struct device *dev, unsigned long base_addr,
	int irq, int clock, int differential, int scsi_id)
	{
	struct Scsi_Host * host = NULL;
	struct NCR_700_Host_Parameters *hostdata =
	kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);

	printk(KERN_NOTICE "sim710: %s\n", dev_name(dev));
	printk(KERN_NOTICE "sim710: irq = %d, clock = %d, base = 0x%lx, scsi_id = %d\n",
	irq, clock, base_addr, scsi_id);

	if(hostdata == NULL) {
	printk(KERN_ERR "sim710: Failed to allocate host data\n");
	goto out;
	}

	if(request_region(base_addr, 64, "sim710") == NULL) {
	printk(KERN_ERR "sim710: Failed to reserve IO region 0x%lx\n",
	base_addr);
	goto out_free;
	}

	/* Fill in the three required pieces of hostdata */
	hostdata->base = ioport_map(base_addr, 64);
	hostdata->differential = differential;
	hostdata->clock = clock;
	hostdata->chip710 = 1;
	hostdata->burst_length = 8;

	/* and register the chip */
	if((host = NCR_700_detect(&sim710_driver_template, hostdata, dev))
	== NULL) {
	printk(KERN_ERR "sim710: No host detected; card configuration problem?\n");
	goto out_release;
	}
	host->this_id = scsi_id;
	host->base = base_addr;
	host->irq = irq;
	if (request_irq(irq, NCR_700_intr, IRQF_SHARED, "sim710", host)) {
	printk(KERN_ERR "sim710: request_irq failed\n");
	goto out_put_host;
	}

	dev_set_drvdata(dev, host);
	scsi_scan_host(host);

	return 0;

	out_put_host:
	scsi_host_put(host);
	out_release:
	release_region(base_addr, 64);
	out_free:
	kfree(hostdata);
	out:
	return -ENODEV;
	}

	static __devexit int
	sim710_device_remove(struct device *dev)
	{
	struct Scsi_Host *host = dev_get_drvdata(dev);
	struct NCR_700_Host_Parameters *hostdata =
	(struct NCR_700_Host_Parameters *)host->hostdata[0];

	scsi_remove_host(host);
	NCR_700_release(host);
	kfree(hostdata);
	free_irq(host->irq, host);
	release_region(host->base, 64);
	return 0;
	}

	#ifdef CONFIG_MCA

	/* CARD ID 01BB and 01BA use the same pos values */
	#define MCA_01BB_IO_PORTS { 0x0000, 0x0000, 0x0800, 0x0C00, 0x1000, 0x1400, \
	0x1800, 0x1C00, 0x2000, 0x2400, 0x2800, \
	0x2C00, 0x3000, 0x3400, 0x3800, 0x3C00, \
	0x4000, 0x4400, 0x4800, 0x4C00, 0x5000 }

	#define MCA_01BB_IRQS { 3, 5, 11, 14 }

	/* CARD ID 004f */
	#define MCA_004F_IO_PORTS { 0x0000, 0x0200, 0x0300, 0x0400, 0x0500, 0x0600 }
	#define MCA_004F_IRQS { 5, 9, 14 }

	static short sim710_mca_id_table[] = { 0x01bb, 0x01ba, 0x004f, 0};

	static __init int
	sim710_mca_probe(struct device *dev)
	{
	struct mca_device *mca_dev = to_mca_device(dev);
	int slot = mca_dev->slot;
	int pos[3];
	unsigned int base;
	int irq_vector;
	short id = sim710_mca_id_table[mca_dev->index];
	static int io_004f_by_pos[] = MCA_004F_IO_PORTS;
	static int irq_004f_by_pos[] = MCA_004F_IRQS;
	static int io_01bb_by_pos[] = MCA_01BB_IO_PORTS;
	static int irq_01bb_by_pos[] = MCA_01BB_IRQS;
	char *name;
	int clock;

	pos[0] = mca_device_read_stored_pos(mca_dev, 2);
	pos[1] = mca_device_read_stored_pos(mca_dev, 3);
	pos[2] = mca_device_read_stored_pos(mca_dev, 4);

	/*
	* 01BB & 01BA port base by bits 7,6,5,4,3,2 in pos[2]
	*
	* 000000 <disabled> 001010 0x2800
	* 000001 <invalid> 001011 0x2C00
	* 000010 0x0800 001100 0x3000
	* 000011 0x0C00 001101 0x3400
	* 000100 0x1000 001110 0x3800
	* 000101 0x1400 001111 0x3C00
	* 000110 0x1800 010000 0x4000
	* 000111 0x1C00 010001 0x4400
	* 001000 0x2000 010010 0x4800
	* 001001 0x2400 010011 0x4C00
	* 010100 0x5000
	*
	* 00F4 port base by bits 3,2,1 in pos[0]
	*
	* 000 <disabled> 001 0x200
	* 010 0x300 011 0x400
	* 100 0x500 101 0x600
	*
	* 01BB & 01BA IRQ is specified in pos[0] bits 7 and 6:
	*
	* 00 3 10 11
	* 01 5 11 14
	*
	* 00F4 IRQ specified by bits 6,5,4 in pos[0]
	*
	* 100 5 101 9
	* 110 14
	*/

	if (id == 0x01bb \|\| id == 0x01ba) {
	base = io_01bb_by_pos[(pos[2] & 0xFC) >> 2];
	irq_vector =
	irq_01bb_by_pos[((pos[0] & 0xC0) >> 6)];

	clock = 50;
	if (id == 0x01bb)
	name = "NCR 3360/3430 SCSI SubSystem";
	else
	name = "NCR Dual SIOP SCSI Host Adapter Board";
	} else if ( id == 0x004f ) {
	base = io_004f_by_pos[((pos[0] & 0x0E) >> 1)];
	irq_vector =
	irq_004f_by_pos[((pos[0] & 0x70) >> 4) - 4];
	clock = 50;
	name = "NCR 53c710 SCSI Host Adapter Board";
	} else {
	return -ENODEV;
	}
	mca_device_set_name(mca_dev, name);
	mca_device_set_claim(mca_dev, 1);
	base = mca_device_transform_ioport(mca_dev, base);
	irq_vector = mca_device_transform_irq(mca_dev, irq_vector);

	return sim710_probe_common(dev, base, irq_vector, clock,
	0, id_array[slot]);
	}

	static struct mca_driver sim710_mca_driver = {
	.id_table = sim710_mca_id_table,
	.driver = {
	.name = "sim710",
	.bus = &mca_bus_type,
	.probe = sim710_mca_probe,
	.remove = __devexit_p(sim710_device_remove),
	},
	};

	#endif /* CONFIG_MCA */

	#ifdef CONFIG_EISA
	static struct eisa_device_id sim710_eisa_ids[] = {
	{ "CPQ4410" },
	{ "CPQ4411" },
	{ "HWP0C80" },
	{ "" }
	};
	MODULE_DEVICE_TABLE(eisa, sim710_eisa_ids);

	static __init int
	sim710_eisa_probe(struct device *dev)
	{
	struct eisa_device *edev = to_eisa_device(dev);
	unsigned long io_addr = edev->base_addr;
	char eisa_cpq_irqs[] = { 11, 14, 15, 10, 9, 0 };
	char eisa_hwp_irqs[] = { 3, 4, 5, 7, 12, 10, 11, 0};
	char *eisa_irqs;
	unsigned char irq_index;
	unsigned char irq, differential = 0, scsi_id = 7;

	if(strcmp(edev->id.sig, "HWP0C80") == 0) {
	__u8 val;
	eisa_irqs = eisa_hwp_irqs;
	irq_index = (inb(io_addr + 0xc85) & 0x7) - 1;

	val = inb(io_addr + 0x4);
	scsi_id = ffs(val) - 1;

	if(scsi_id > 7 \|\| (val & ~(1<<scsi_id)) != 0) {
	printk(KERN_ERR "sim710.c, EISA card %s has incorrect scsi_id, setting to 7\n", dev_name(dev));
	scsi_id = 7;
	}
	} else {
	eisa_irqs = eisa_cpq_irqs;
	irq_index = inb(io_addr + 0xc88) & 0x07;
	}

	if(irq_index >= strlen(eisa_irqs)) {
	printk("sim710.c: irq nasty\n");
	return -ENODEV;
	}

	irq = eisa_irqs[irq_index];

	return sim710_probe_common(dev, io_addr, irq, 50,
	differential, scsi_id);
	}

	static struct eisa_driver sim710_eisa_driver = {
	.id_table = sim710_eisa_ids,
	.driver = {
	.name = "sim710",
	.probe = sim710_eisa_probe,
	.remove = __devexit_p(sim710_device_remove),
	},
	};
	#endif /* CONFIG_EISA */

	static int __init sim710_init(void)
	{
	int err = -ENODEV;

	#ifdef MODULE
	if (sim710)
	param_setup(sim710);
	#endif

	#ifdef CONFIG_MCA
	err = mca_register_driver(&sim710_mca_driver);
	#endif

	#ifdef CONFIG_EISA
	err = eisa_driver_register(&sim710_eisa_driver);
	#endif
	/* FIXME: what we'd really like to return here is -ENODEV if
	* no devices have actually been found. Instead, the err
	* above actually only reports problems with kobject_register,
	* so for the moment return success */

	return 0;
	}

	static void __exit sim710_exit(void)
	{
	#ifdef CONFIG_MCA
	if (MCA_bus)
	mca_unregister_driver(&sim710_mca_driver);
	#endif

	#ifdef CONFIG_EISA
	eisa_driver_unregister(&sim710_eisa_driver);
	#endif
	}

	module_init(sim710_init);
	module_exit(sim710_exit);