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>
159 lines
3.7 KiB
C
159 lines
3.7 KiB
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 <jongk@linux-m68k.org>
|
|
*/
|
|
|
|
#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 <jongk@linux-m68k.org>");
|
|
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 = kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
|
|
if (hostdata == NULL) {
|
|
printk(KERN_ERR "mvme16x-scsi: "
|
|
"Failed to allocate host data\n");
|
|
goto out;
|
|
}
|
|
memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
|
|
|
|
/* 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);
|