1 files changed, 166 insertions, 0 deletions

diff --git a/drivers/s390/net/cu3088.c b/drivers/s390/net/cu3088.c
new file mode 100644
index 000000000000..1b0a9f16024c
--- /dev/null
+++ b/drivers/s390/net/cu3088.c
@@ -0,0 +1,166 @@
+/*
+ * $Id: cu3088.c,v 1.34 2004/06/15 13:16:27 pavlic Exp $
+ *
+ * CTC / LCS ccw_device driver
+ *
+ * Copyright (C) 2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Arnd Bergmann <arndb@de.ibm.com>
+ *            Cornelia Huck <cohuck@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/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",
+        "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 },
+        { /* 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 count;
+                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);