/*
* Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
* Amiga Technologies A4000T SCSI controller.
*
* Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
* plus modifications of the 53c7xx.c driver to support the Amiga.
*
* Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
*/
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/amigahw.h>
#include <asm/amigaints.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_spi.h>
#include "53c700.h"
MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver");
MODULE_LICENSE("GPL");
static struct scsi_host_template a4000t_scsi_driver_template = {
.name = "A4000T builtin SCSI",
.proc_name = "A4000t",
.this_id = 7,
.module = THIS_MODULE,
};
static struct platform_device *a4000t_scsi_device;
#define A4000T_SCSI_ADDR 0xdd0040
static int __devinit a4000t_probe(struct device *dev)
{
struct Scsi_Host * host = NULL;
struct NCR_700_Host_Parameters *hostdata;
if (!(MACH_IS_AMIGA && AMIGAHW_PRESENT(A4000_SCSI)))
goto out;
if (!request_mem_region(A4000T_SCSI_ADDR, 0x1000,
"A4000T builtin SCSI"))
goto out;
hostdata = kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
if (hostdata == NULL) {
printk(KERN_ERR "a4000t-scsi: Failed to allocate host data\n");
goto out_release;
}
memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
/* Fill in the required pieces of hostdata */
hostdata->base = (void __iomem *)ZTWO_VADDR(A4000T_SCSI_ADDR);
hostdata->clock = 50;
hostdata->chip710 = 1;
hostdata->dmode_extra = DMODE_FC2;
hostdata->dcntl_extra = EA_710;
/* and register the chip */
host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata, dev);
if (!host) {
printk(KERN_ERR "a4000t-scsi: No host detected; "
"board configuration problem?\n");
goto out_free;
}
host->this_id = 7;
host->base = A4000T_SCSI_ADDR;
host->irq = IRQ_AMIGA_PORTS;
if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi",
host)) {
printk(KERN_ERR "a4000t-scsi: request_irq failed\n");
goto out_put_host;
}
scsi_scan_host(host);
return 0;
out_put_host:
scsi_host_put(host);
out_free:
kfree(hostdata);
out_release:
release_mem_region(A4000T_SCSI_ADDR, 0x1000);
out:
return -ENODEV;
}
static __devexit int a4000t_device_remove(struct device *dev)
{
struct Scsi_Host *host = dev_to_shost(dev);
struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
scsi_remove_host(host);
NCR_700_release(host);
kfree(hostdata);
free_irq(host->irq, host);
release_mem_region(A4000T_SCSI_ADDR, 0x1000);
return 0;
}
static struct device_driver a4000t_scsi_driver = {
.name = "a4000t-scsi",
.bus = &platform_bus_type,
.probe = a4000t_probe,
.remove = __devexit_p(a4000t_device_remove),
};
static int __init a4000t_scsi_init(void)
{
int err;
err = driver_register(&a4000t_scsi_driver);
if (err)
return err;
a4000t_scsi_device = platform_device_register_simple("a4000t-scsi",
-1, NULL, 0);
if (IS_ERR(a4000t_scsi_device)) {
driver_unregister(&a4000t_scsi_driver);
return PTR_ERR(a4000t_scsi_device);
}
return err;
}
static void __exit a4000t_scsi_exit(void)
{
platform_device_unregister(a4000t_scsi_device);
driver_unregister(&a4000t_scsi_driver);
}
module_init(a4000t_scsi_init);
module_exit(a4000t_scsi_exit);
