1 files changed, 135 insertions, 0 deletions

diff --git a/drivers/s390/scsi/zfcp_sysfs_driver.c b/drivers/s390/scsi/zfcp_sysfs_driver.c
new file mode 100644
index 000000000000..77a5e2dcc0ff
--- /dev/null
+++ b/drivers/s390/scsi/zfcp_sysfs_driver.c
@@ -0,0 +1,135 @@
+/*
+ * linux/drivers/s390/scsi/zfcp_sysfs_driver.c
+ *
+ * FCP adapter driver for IBM eServer zSeries
+ *
+ * sysfs driver related routines
+ *
+ * (C) Copyright IBM Corp. 2003, 2004
+ *
+ * Authors:
+ *      Martin Peschke <mpeschke@de.ibm.com>
+ *      Heiko Carstens <heiko.carstens@de.ibm.com>
+ *      Andreas Herrmann <aherrman@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.
+ */
+
+#define ZFCP_SYSFS_DRIVER_C_REVISION "$Revision: 1.17 $"
+
+#include "zfcp_ext.h"
+
+#define ZFCP_LOG_AREA                   ZFCP_LOG_AREA_CONFIG
+
+/**
+ * ZFCP_DEFINE_DRIVER_ATTR - define for all loglevels sysfs attributes
+ * @_name:       name of attribute
+ * @_define:     name of ZFCP loglevel define
+ *
+ * Generates store function for a sysfs loglevel attribute of zfcp driver.
+ */
+#define ZFCP_DEFINE_DRIVER_ATTR(_name, _define)                               \
+static ssize_t zfcp_sysfs_loglevel_##_name##_store(struct device_driver *drv, \
+                                                   const char *buf,           \
+                                                   size_t count)              \
+{                                                                             \
+        unsigned int loglevel;                                                \
+        unsigned int new_loglevel;                                            \
+        char *endp;                                                           \
+                                                                              \
+        new_loglevel = simple_strtoul(buf, &endp, 0);                         \
+        if ((endp + 1) < (buf + count))                                       \
+                return -EINVAL;                                               \
+        if (new_loglevel > 3)                                                 \
+                return -EINVAL;                                               \
+        down(&zfcp_data.config_sema);                                         \
+        loglevel = atomic_read(&zfcp_data.loglevel);                          \
+        loglevel &= ~((unsigned int) 0xf << (ZFCP_LOG_AREA_##_define << 2));  \
+        loglevel |= new_loglevel << (ZFCP_LOG_AREA_##_define << 2);           \
+        atomic_set(&zfcp_data.loglevel, loglevel);                            \
+        up(&zfcp_data.config_sema);                                           \
+        return count;                                                         \
+}                                                                             \
+                                                                              \
+static ssize_t zfcp_sysfs_loglevel_##_name##_show(struct device_driver *dev,  \
+                                                  char *buf)                  \
+{                                                                             \
+        return sprintf(buf,"%d\n", (unsigned int)                             \
+                       ZFCP_GET_LOG_VALUE(ZFCP_LOG_AREA_##_define));          \
+}                                                                             \
+                                                                              \
+static DRIVER_ATTR(loglevel_##_name, S_IWUSR | S_IRUGO,                       \
+                   zfcp_sysfs_loglevel_##_name##_show,                        \
+                   zfcp_sysfs_loglevel_##_name##_store);
+
+ZFCP_DEFINE_DRIVER_ATTR(other, OTHER);
+ZFCP_DEFINE_DRIVER_ATTR(scsi, SCSI);
+ZFCP_DEFINE_DRIVER_ATTR(fsf, FSF);
+ZFCP_DEFINE_DRIVER_ATTR(config, CONFIG);
+ZFCP_DEFINE_DRIVER_ATTR(cio, CIO);
+ZFCP_DEFINE_DRIVER_ATTR(qdio, QDIO);
+ZFCP_DEFINE_DRIVER_ATTR(erp, ERP);
+ZFCP_DEFINE_DRIVER_ATTR(fc, FC);
+
+static ssize_t zfcp_sysfs_version_show(struct device_driver *dev,
+                                              char *buf)
+{
+        return sprintf(buf, "%s\n", zfcp_data.driver_version);
+}
+
+static DRIVER_ATTR(version, S_IRUGO, zfcp_sysfs_version_show, NULL);
+
+static struct attribute *zfcp_driver_attrs[] = {
+        &driver_attr_loglevel_other.attr,
+        &driver_attr_loglevel_scsi.attr,
+        &driver_attr_loglevel_fsf.attr,
+        &driver_attr_loglevel_config.attr,
+        &driver_attr_loglevel_cio.attr,
+        &driver_attr_loglevel_qdio.attr,
+        &driver_attr_loglevel_erp.attr,
+        &driver_attr_loglevel_fc.attr,
+        &driver_attr_version.attr,
+        NULL
+};
+
+static struct attribute_group zfcp_driver_attr_group = {
+        .attrs = zfcp_driver_attrs,
+};
+
+/**
+ * zfcp_sysfs_create_driver_files - create sysfs driver files
+ * @dev: pointer to belonging device
+ *
+ * Create all sysfs attributes of the zfcp device driver
+ */
+int
+zfcp_sysfs_driver_create_files(struct device_driver *drv)
+{
+        return sysfs_create_group(&drv->kobj, &zfcp_driver_attr_group);
+}
+
+/**
+ * zfcp_sysfs_remove_driver_files - remove sysfs driver files
+ * @dev: pointer to belonging device
+ *
+ * Remove all sysfs attributes of the zfcp device driver
+ */
+void
+zfcp_sysfs_driver_remove_files(struct device_driver *drv)
+{
+        sysfs_remove_group(&drv->kobj, &zfcp_driver_attr_group);
+}
+
+#undef ZFCP_LOG_AREA