| /* |
| * This file is part of the zfcp device driver for |
| * FCP adapters for IBM System z9 and zSeries. |
| * |
| * (C) Copyright IBM Corp. 2002, 2006 |
| * |
| * 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 "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 |
