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>
136 lines
3.3 KiB
C
136 lines
3.3 KiB
C
/*
|
|
* Detection routine for the NCR53c710 based BVME6000 SCSI Controllers for Linux.
|
|
*
|
|
* Based on work by Alan Hourihane and Kars de Jong
|
|
*
|
|
* Rewritten to use 53c700.c by Richard Hirst <richard@sleepie.demon.co.uk>
|
|
*/
|
|
|
|
#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/bvme6000hw.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("Richard Hirst <richard@sleepie.demon.co.uk>");
|
|
MODULE_DESCRIPTION("BVME6000 NCR53C710 driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static struct scsi_host_template bvme6000_scsi_driver_template = {
|
|
.name = "BVME6000 NCR53c710 SCSI",
|
|
.proc_name = "BVME6000",
|
|
.this_id = 7,
|
|
.module = THIS_MODULE,
|
|
};
|
|
|
|
static struct platform_device *bvme6000_scsi_device;
|
|
|
|
static __devinit int
|
|
bvme6000_probe(struct device *dev)
|
|
{
|
|
struct Scsi_Host * host = NULL;
|
|
struct NCR_700_Host_Parameters *hostdata;
|
|
|
|
if (!MACH_IS_BVME6000)
|
|
goto out;
|
|
|
|
hostdata = kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
|
|
if (hostdata == NULL) {
|
|
printk(KERN_ERR "bvme6000-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 *)BVME_NCR53C710_BASE;
|
|
hostdata->clock = 40; /* 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(&bvme6000_scsi_driver_template, hostdata, dev);
|
|
if (!host) {
|
|
printk(KERN_ERR "bvme6000-scsi: No host detected; "
|
|
"board configuration problem?\n");
|
|
goto out_free;
|
|
}
|
|
host->base = BVME_NCR53C710_BASE;
|
|
host->this_id = 7;
|
|
host->irq = BVME_IRQ_SCSI;
|
|
if (request_irq(BVME_IRQ_SCSI, NCR_700_intr, 0, "bvme6000-scsi",
|
|
host)) {
|
|
printk(KERN_ERR "bvme6000-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:
|
|
return -ENODEV;
|
|
}
|
|
|
|
static __devexit int
|
|
bvme6000_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);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct device_driver bvme6000_scsi_driver = {
|
|
.name = "bvme6000-scsi",
|
|
.bus = &platform_bus_type,
|
|
.probe = bvme6000_probe,
|
|
.remove = __devexit_p(bvme6000_device_remove),
|
|
};
|
|
|
|
static int __init bvme6000_scsi_init(void)
|
|
{
|
|
int err;
|
|
|
|
err = driver_register(&bvme6000_scsi_driver);
|
|
if (err)
|
|
return err;
|
|
|
|
bvme6000_scsi_device = platform_device_register_simple("bvme6000-scsi",
|
|
-1, NULL, 0);
|
|
if (IS_ERR(bvme6000_scsi_device)) {
|
|
driver_unregister(&bvme6000_scsi_driver);
|
|
return PTR_ERR(bvme6000_scsi_device);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit bvme6000_scsi_exit(void)
|
|
{
|
|
platform_device_unregister(bvme6000_scsi_device);
|
|
driver_unregister(&bvme6000_scsi_driver);
|
|
}
|
|
|
|
module_init(bvme6000_scsi_init);
|
|
module_exit(bvme6000_scsi_exit);
|