mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 21:38:32 +08:00
e82b0f2cc2
Previous fix patches added a bunch of trailing whitespace, which git-applymbox complained loudly about.
168 lines
3.9 KiB
C
168 lines
3.9 KiB
C
/*
|
|
* CTC / LCS ccw_device driver
|
|
*
|
|
* Copyright (C) 2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
|
|
* Author(s): Arnd Bergmann <arndb@de.ibm.com>
|
|
* Cornelia Huck <cornelia.huck@de.ibm.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/err.h>
|
|
|
|
#include <asm/s390_rdev.h>
|
|
#include <asm/ccwdev.h>
|
|
#include <asm/ccwgroup.h>
|
|
|
|
#include "cu3088.h"
|
|
|
|
const char *cu3088_type[] = {
|
|
"not a channel",
|
|
"CTC/A",
|
|
"ESCON channel",
|
|
"FICON channel",
|
|
"P390 LCS card",
|
|
"OSA LCS card",
|
|
"CLAW channel device",
|
|
"unknown channel type",
|
|
"unsupported channel type",
|
|
};
|
|
|
|
/* static definitions */
|
|
|
|
static struct ccw_device_id cu3088_ids[] = {
|
|
{ CCW_DEVICE(0x3088, 0x08), .driver_info = channel_type_parallel },
|
|
{ CCW_DEVICE(0x3088, 0x1f), .driver_info = channel_type_escon },
|
|
{ CCW_DEVICE(0x3088, 0x1e), .driver_info = channel_type_ficon },
|
|
{ CCW_DEVICE(0x3088, 0x01), .driver_info = channel_type_p390 },
|
|
{ CCW_DEVICE(0x3088, 0x60), .driver_info = channel_type_osa2 },
|
|
{ CCW_DEVICE(0x3088, 0x61), .driver_info = channel_type_claw },
|
|
{ /* end of list */ }
|
|
};
|
|
|
|
static struct ccw_driver cu3088_driver;
|
|
|
|
struct device *cu3088_root_dev;
|
|
|
|
static ssize_t
|
|
group_write(struct device_driver *drv, const char *buf, size_t count)
|
|
{
|
|
const char *start, *end;
|
|
char bus_ids[2][BUS_ID_SIZE], *argv[2];
|
|
int i;
|
|
int ret;
|
|
struct ccwgroup_driver *cdrv;
|
|
|
|
cdrv = to_ccwgroupdrv(drv);
|
|
if (!cdrv)
|
|
return -EINVAL;
|
|
start = buf;
|
|
for (i=0; i<2; i++) {
|
|
static const char delim[] = {',', '\n'};
|
|
int len;
|
|
|
|
if (!(end = strchr(start, delim[i])))
|
|
return -EINVAL;
|
|
len = min_t(ptrdiff_t, BUS_ID_SIZE, end - start + 1);
|
|
strlcpy (bus_ids[i], start, len);
|
|
argv[i] = bus_ids[i];
|
|
start = end + 1;
|
|
}
|
|
|
|
ret = ccwgroup_create(cu3088_root_dev, cdrv->driver_id,
|
|
&cu3088_driver, 2, argv);
|
|
|
|
return (ret == 0) ? count : ret;
|
|
}
|
|
|
|
static DRIVER_ATTR(group, 0200, NULL, group_write);
|
|
|
|
/* Register-unregister for ctc&lcs */
|
|
int
|
|
register_cu3088_discipline(struct ccwgroup_driver *dcp)
|
|
{
|
|
int rc;
|
|
|
|
if (!dcp)
|
|
return -EINVAL;
|
|
|
|
/* Register discipline.*/
|
|
rc = ccwgroup_driver_register(dcp);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = driver_create_file(&dcp->driver, &driver_attr_group);
|
|
if (rc)
|
|
ccwgroup_driver_unregister(dcp);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
void
|
|
unregister_cu3088_discipline(struct ccwgroup_driver *dcp)
|
|
{
|
|
if (!dcp)
|
|
return;
|
|
|
|
driver_remove_file(&dcp->driver, &driver_attr_group);
|
|
ccwgroup_driver_unregister(dcp);
|
|
}
|
|
|
|
static struct ccw_driver cu3088_driver = {
|
|
.owner = THIS_MODULE,
|
|
.ids = cu3088_ids,
|
|
.name = "cu3088",
|
|
.probe = ccwgroup_probe_ccwdev,
|
|
.remove = ccwgroup_remove_ccwdev,
|
|
};
|
|
|
|
/* module setup */
|
|
static int __init
|
|
cu3088_init (void)
|
|
{
|
|
int rc;
|
|
|
|
cu3088_root_dev = s390_root_dev_register("cu3088");
|
|
if (IS_ERR(cu3088_root_dev))
|
|
return PTR_ERR(cu3088_root_dev);
|
|
rc = ccw_driver_register(&cu3088_driver);
|
|
if (rc)
|
|
s390_root_dev_unregister(cu3088_root_dev);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void __exit
|
|
cu3088_exit (void)
|
|
{
|
|
ccw_driver_unregister(&cu3088_driver);
|
|
s390_root_dev_unregister(cu3088_root_dev);
|
|
}
|
|
|
|
MODULE_DEVICE_TABLE(ccw,cu3088_ids);
|
|
MODULE_AUTHOR("Arnd Bergmann <arndb@de.ibm.com>");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(cu3088_init);
|
|
module_exit(cu3088_exit);
|
|
|
|
EXPORT_SYMBOL_GPL(cu3088_type);
|
|
EXPORT_SYMBOL_GPL(register_cu3088_discipline);
|
|
EXPORT_SYMBOL_GPL(unregister_cu3088_discipline);
|