3ac709c113
Fix drivers misusing dev_to_shost Some drivers were using dev_to_shost to go from a struct device to the corresponding shost. Unfortunately, dev_to_shost only looks up the tree to find an shost (it's designed to go from a scsi_device or a scsi_target to the parent scsi_host), and these drivers were calling it with the parent of the scsi_host. I've fixed this by saving a pointer to the Scsi_Host in the drvdata, which matches what most scsi drivers do. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
144 lines
3.5 KiB
C
144 lines
3.5 KiB
C
/*
|
|
* 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;
|
|
}
|
|
|
|
dev_set_drvdata(dev, 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_get_drvdata(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);
|