[linux.git] / drivers / scsi / mvme16x_scsi.c

/*
 * Detection routine for the NCR53c710 based MVME16x SCSI Controllers for Linux.
 *
 * Based on work by Alan Hourihane
 *
 * Rewritten to use 53c700.c by Kars de Jong <[email protected]>
 */

#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/mvme16xhw.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"

MODULE_AUTHOR("Kars de Jong <[email protected]>");
MODULE_DESCRIPTION("MVME16x NCR53C710 driver");
MODULE_LICENSE("GPL");

static struct scsi_host_template mvme16x_scsi_driver_template = {
	.name			= "MVME16x NCR53c710 SCSI",
	.proc_name		= "MVME16x",
	.this_id		= 7,
	.module			= THIS_MODULE,
};

static struct platform_device *mvme16x_scsi_device;

static __devinit int
mvme16x_probe(struct device *dev)
{
	struct Scsi_Host * host = NULL;
	struct NCR_700_Host_Parameters *hostdata;

	if (!MACH_IS_MVME16x)
		goto out;

	if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) {
		printk(KERN_INFO "mvme16x-scsi: detection disabled, "
				 "SCSI chip not present\n");
		goto out;
	}

	hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
	if (hostdata == NULL) {
		printk(KERN_ERR "mvme16x-scsi: "
				"Failed to allocate host data\n");
		goto out;
	}

	/* Fill in the required pieces of hostdata */
	hostdata->base = (void __iomem *)0xfff47000UL;
	hostdata->clock = 50;	/* XXX - depends on the CPU clock! */
	hostdata->chip710 = 1;
	hostdata->dmode_extra = DMODE_FC2;
	hostdata->dcntl_extra = EA_710;
	hostdata->ctest7_extra = CTEST7_TT1;

	/* and register the chip */
	host = NCR_700_detect(&mvme16x_scsi_driver_template, hostdata, dev);
	if (!host) {
		printk(KERN_ERR "mvme16x-scsi: No host detected; "
				"board configuration problem?\n");
		goto out_free;
	}
	host->this_id = 7;
	host->base = 0xfff47000UL;
	host->irq = MVME16x_IRQ_SCSI;
	if (request_irq(host->irq, NCR_700_intr, 0, "mvme16x-scsi", host)) {
		printk(KERN_ERR "mvme16x-scsi: request_irq failed\n");
		goto out_put_host;
	}

	/* Enable scsi chip ints */
	{
		volatile unsigned long v;

		/* Enable scsi interrupts at level 4 in PCCchip2 */
		v = in_be32(0xfff4202c);
		v = (v & ~0xff) | 0x10 | 4;
		out_be32(0xfff4202c, v);
	}

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

	return 0;

 out_put_host:
	scsi_host_put(host);
 out_free:
	kfree(hostdata);
 out:
	return -ENODEV;
}

static __devexit int
mvme16x_device_remove(struct device *dev)
{
	struct Scsi_Host *host = dev_get_drvdata(dev);
	struct NCR_700_Host_Parameters *hostdata = shost_priv(host);

	/* Disable scsi chip ints */
	{
		volatile unsigned long v;

		v = in_be32(0xfff4202c);
		v &= ~0x10;
		out_be32(0xfff4202c, v);
	}
	scsi_remove_host(host);
	NCR_700_release(host);
	kfree(hostdata);
	free_irq(host->irq, host);

	return 0;
}

static struct device_driver mvme16x_scsi_driver = {
	.name	= "mvme16x-scsi",
	.bus	= &platform_bus_type,
	.probe	= mvme16x_probe,
	.remove	= __devexit_p(mvme16x_device_remove),
};

static int __init mvme16x_scsi_init(void)
{
	int err;

	err = driver_register(&mvme16x_scsi_driver);
	if (err)
		return err;

	mvme16x_scsi_device = platform_device_register_simple("mvme16x-scsi",
							      -1, NULL, 0);
	if (IS_ERR(mvme16x_scsi_device)) {
		driver_unregister(&mvme16x_scsi_driver);
		return PTR_ERR(mvme16x_scsi_device);
	}

	return 0;
}

static void __exit mvme16x_scsi_exit(void)
{
	platform_device_unregister(mvme16x_scsi_device);
	driver_unregister(&mvme16x_scsi_driver);
}

module_init(mvme16x_scsi_init);
module_exit(mvme16x_scsi_exit);
Commit	Line	Data
506c7bbc KJ	1	/*
	2	* Detection routine for the NCR53c710 based MVME16x SCSI Controllers for Linux.
	3	*
	4	* Based on work by Alan Hourihane
	5	*
	6	* Rewritten to use 53c700.c by Kars de Jong <[email protected]>
	7	*/
	8
	9	#include <linux/module.h>
	10	#include <linux/blkdev.h>
	11	#include <linux/device.h>
	12	#include <linux/platform_device.h>
	13	#include <linux/init.h>
	14	#include <linux/interrupt.h>
	15	#include <asm/mvme16xhw.h>
	16	#include <scsi/scsi_host.h>
	17	#include <scsi/scsi_device.h>
	18	#include <scsi/scsi_transport.h>
	19	#include <scsi/scsi_transport_spi.h>
	20
	21	#include "53c700.h"
	22
	23	MODULE_AUTHOR("Kars de Jong <[email protected]>");
	24	MODULE_DESCRIPTION("MVME16x NCR53C710 driver");
	25	MODULE_LICENSE("GPL");
	26
	27	static struct scsi_host_template mvme16x_scsi_driver_template = {
	28	.name = "MVME16x NCR53c710 SCSI",
	29	.proc_name = "MVME16x",
	30	.this_id = 7,
	31	.module = THIS_MODULE,
	32	};
	33
	34	static struct platform_device *mvme16x_scsi_device;
	35
	36	static __devinit int
	37	mvme16x_probe(struct device *dev)
	38	{
	39	struct Scsi_Host * host = NULL;
	40	struct NCR_700_Host_Parameters *hostdata;
	41
	42	if (!MACH_IS_MVME16x)
	43	goto out;
	44
	45	if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) {
	46	printk(KERN_INFO "mvme16x-scsi: detection disabled, "
	47	"SCSI chip not present\n");
	48	goto out;
	49	}
	50
bbfbbbc1	51	hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
506c7bbc KJ	52	if (hostdata == NULL) {
	53	printk(KERN_ERR "mvme16x-scsi: "
	54	"Failed to allocate host data\n");
	55	goto out;
	56	}
506c7bbc KJ	57
	58	/* Fill in the required pieces of hostdata */
	59	hostdata->base = (void __iomem *)0xfff47000UL;
	60	hostdata->clock = 50; /* XXX - depends on the CPU clock! */
	61	hostdata->chip710 = 1;
	62	hostdata->dmode_extra = DMODE_FC2;
	63	hostdata->dcntl_extra = EA_710;
	64	hostdata->ctest7_extra = CTEST7_TT1;
	65
	66	/* and register the chip */
	67	host = NCR_700_detect(&mvme16x_scsi_driver_template, hostdata, dev);
	68	if (!host) {
	69	printk(KERN_ERR "mvme16x-scsi: No host detected; "
	70	"board configuration problem?\n");
	71	goto out_free;
	72	}
	73	host->this_id = 7;
	74	host->base = 0xfff47000UL;
	75	host->irq = MVME16x_IRQ_SCSI;
	76	if (request_irq(host->irq, NCR_700_intr, 0, "mvme16x-scsi", host)) {
	77	printk(KERN_ERR "mvme16x-scsi: request_irq failed\n");
	78	goto out_put_host;
	79	}
	80
	81	/* Enable scsi chip ints */
	82	{
	83	volatile unsigned long v;
	84
	85	/* Enable scsi interrupts at level 4 in PCCchip2 */
	86	v = in_be32(0xfff4202c);
	87	v = (v & ~0xff) \| 0x10 \| 4;
	88	out_be32(0xfff4202c, v);
	89	}
	90
3ac709c1	91	dev_set_drvdata(dev, host);
506c7bbc KJ	92	scsi_scan_host(host);
	93
	94	return 0;
	95
	96	out_put_host:
	97	scsi_host_put(host);
	98	out_free:
	99	kfree(hostdata);
	100	out:
	101	return -ENODEV;
	102	}
	103
	104	static __devexit int
	105	mvme16x_device_remove(struct device *dev)
	106	{
3ac709c1	107	struct Scsi_Host *host = dev_get_drvdata(dev);
506c7bbc KJ	108	struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
	109
	110	/* Disable scsi chip ints */
	111	{
	112	volatile unsigned long v;
	113
	114	v = in_be32(0xfff4202c);
	115	v &= ~0x10;
	116	out_be32(0xfff4202c, v);
	117	}
	118	scsi_remove_host(host);
	119	NCR_700_release(host);
	120	kfree(hostdata);
	121	free_irq(host->irq, host);
	122
	123	return 0;
	124	}
	125
	126	static struct device_driver mvme16x_scsi_driver = {
	127	.name = "mvme16x-scsi",
	128	.bus = &platform_bus_type,
	129	.probe = mvme16x_probe,
	130	.remove = __devexit_p(mvme16x_device_remove),
	131	};
	132
	133	static int __init mvme16x_scsi_init(void)
	134	{
	135	int err;
	136
	137	err = driver_register(&mvme16x_scsi_driver);
	138	if (err)
	139	return err;
	140
	141	mvme16x_scsi_device = platform_device_register_simple("mvme16x-scsi",
	142	-1, NULL, 0);
	143	if (IS_ERR(mvme16x_scsi_device)) {
	144	driver_unregister(&mvme16x_scsi_driver);
	145	return PTR_ERR(mvme16x_scsi_device);
	146	}
	147
	148	return 0;
	149	}
	150
	151	static void __exit mvme16x_scsi_exit(void)
	152	{
	153	platform_device_unregister(mvme16x_scsi_device);
	154	driver_unregister(&mvme16x_scsi_driver);
	155	}
	156
	157	module_init(mvme16x_scsi_init);
	158	module_exit(mvme16x_scsi_exit);