2 * linux/drivers/s390/scsi/zfcp_sysfs_adapter.c
4 * FCP adapter driver for IBM eServer zSeries
6 * sysfs adapter related routines
8 * (C) Copyright IBM Corp. 2003, 2004
11 * Martin Peschke <mpeschke@de.ibm.com>
12 * Heiko Carstens <heiko.carstens@de.ibm.com>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #define ZFCP_SYSFS_ADAPTER_C_REVISION "$Revision: 1.33 $"
33 #define ZFCP_LOG_AREA ZFCP_LOG_AREA_CONFIG
35 static const char fc_topologies[5][25] = {
40 {"fabric (virt. adapter)"}
44 * ZFCP_DEFINE_ADAPTER_ATTR
45 * @_name: name of show attribute
46 * @_format: format string
47 * @_value: value to print
49 * Generates attributes for an adapter.
51 #define ZFCP_DEFINE_ADAPTER_ATTR(_name, _format, _value) \
52 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
55 struct zfcp_adapter *adapter; \
57 adapter = dev_get_drvdata(dev); \
58 return sprintf(buf, _format, _value); \
61 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
63 ZFCP_DEFINE_ADAPTER_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
64 ZFCP_DEFINE_ADAPTER_ATTR(wwnn, "0x%016llx\n", adapter->wwnn);
65 ZFCP_DEFINE_ADAPTER_ATTR(wwpn, "0x%016llx\n", adapter->wwpn);
66 ZFCP_DEFINE_ADAPTER_ATTR(s_id, "0x%06x\n", adapter->s_id);
67 ZFCP_DEFINE_ADAPTER_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
68 ZFCP_DEFINE_ADAPTER_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
69 ZFCP_DEFINE_ADAPTER_ATTR(fc_link_speed, "%d Gb/s\n", adapter->fc_link_speed);
70 ZFCP_DEFINE_ADAPTER_ATTR(fc_service_class, "%d\n", adapter->fc_service_class);
71 ZFCP_DEFINE_ADAPTER_ATTR(fc_topology, "%s\n",
72 fc_topologies[adapter->fc_topology]);
73 ZFCP_DEFINE_ADAPTER_ATTR(hardware_version, "0x%08x\n",
74 adapter->hardware_version);
75 ZFCP_DEFINE_ADAPTER_ATTR(serial_number, "%17s\n", adapter->serial_number);
76 ZFCP_DEFINE_ADAPTER_ATTR(scsi_host_no, "0x%x\n", adapter->scsi_host_no);
79 * zfcp_sysfs_adapter_in_recovery_show - recovery state of adapter
80 * @dev: pointer to belonging device
81 * @buf: pointer to input buffer
83 * Show function of "in_recovery" attribute of adapter. Will be
84 * "0" if no error recovery is pending for adapter, otherwise "1".
87 zfcp_sysfs_adapter_in_recovery_show(struct device *dev, char *buf)
89 struct zfcp_adapter *adapter;
91 adapter = dev_get_drvdata(dev);
92 if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status))
93 return sprintf(buf, "1\n");
95 return sprintf(buf, "0\n");
98 static DEVICE_ATTR(in_recovery, S_IRUGO,
99 zfcp_sysfs_adapter_in_recovery_show, NULL);
102 * zfcp_sysfs_port_add_store - add a port to sysfs tree
103 * @dev: pointer to belonging device
104 * @buf: pointer to input buffer
105 * @count: number of bytes in buffer
107 * Store function of the "port_add" attribute of an adapter.
110 zfcp_sysfs_port_add_store(struct device *dev, const char *buf, size_t count)
114 struct zfcp_adapter *adapter;
115 struct zfcp_port *port;
116 int retval = -EINVAL;
118 down(&zfcp_data.config_sema);
120 adapter = dev_get_drvdata(dev);
121 if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
126 wwpn = simple_strtoull(buf, &endp, 0);
127 if ((endp + 1) < (buf + count))
130 port = zfcp_port_enqueue(adapter, wwpn, 0);
136 zfcp_erp_port_reopen(port, 0);
137 zfcp_erp_wait(port->adapter);
140 up(&zfcp_data.config_sema);
141 return retval ? retval : count;
144 static DEVICE_ATTR(port_add, S_IWUSR, NULL, zfcp_sysfs_port_add_store);
147 * zfcp_sysfs_port_remove_store - remove a port from sysfs tree
148 * @dev: pointer to belonging device
149 * @buf: pointer to input buffer
150 * @count: number of bytes in buffer
152 * Store function of the "port_remove" attribute of an adapter.
155 zfcp_sysfs_port_remove_store(struct device *dev, const char *buf, size_t count)
157 struct zfcp_adapter *adapter;
158 struct zfcp_port *port;
163 down(&zfcp_data.config_sema);
165 adapter = dev_get_drvdata(dev);
166 if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
171 wwpn = simple_strtoull(buf, &endp, 0);
172 if ((endp + 1) < (buf + count)) {
177 write_lock_irq(&zfcp_data.config_lock);
178 port = zfcp_get_port_by_wwpn(adapter, wwpn);
179 if (port && (atomic_read(&port->refcount) == 0)) {
181 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
182 list_move(&port->list, &adapter->port_remove_lh);
187 write_unlock_irq(&zfcp_data.config_lock);
194 zfcp_erp_port_shutdown(port, 0);
195 zfcp_erp_wait(adapter);
197 zfcp_port_dequeue(port);
199 up(&zfcp_data.config_sema);
200 return retval ? retval : count;
203 static DEVICE_ATTR(port_remove, S_IWUSR, NULL, zfcp_sysfs_port_remove_store);
206 * zfcp_sysfs_adapter_failed_store - failed state of adapter
207 * @dev: pointer to belonging device
208 * @buf: pointer to input buffer
209 * @count: number of bytes in buffer
211 * Store function of the "failed" attribute of an adapter.
212 * If a "0" gets written to "failed", error recovery will be
213 * started for the belonging adapter.
216 zfcp_sysfs_adapter_failed_store(struct device *dev,
217 const char *buf, size_t count)
219 struct zfcp_adapter *adapter;
224 down(&zfcp_data.config_sema);
226 adapter = dev_get_drvdata(dev);
227 if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
232 val = simple_strtoul(buf, &endp, 0);
233 if (((endp + 1) < (buf + count)) || (val != 0)) {
238 zfcp_erp_modify_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING,
240 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
241 zfcp_erp_wait(adapter);
243 up(&zfcp_data.config_sema);
244 return retval ? retval : count;
248 * zfcp_sysfs_adapter_failed_show - failed state of adapter
249 * @dev: pointer to belonging device
250 * @buf: pointer to input buffer
252 * Show function of "failed" attribute of adapter. Will be
253 * "0" if adapter is working, otherwise "1".
256 zfcp_sysfs_adapter_failed_show(struct device *dev, char *buf)
258 struct zfcp_adapter *adapter;
260 adapter = dev_get_drvdata(dev);
261 if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &adapter->status))
262 return sprintf(buf, "1\n");
264 return sprintf(buf, "0\n");
267 static DEVICE_ATTR(failed, S_IWUSR | S_IRUGO, zfcp_sysfs_adapter_failed_show,
268 zfcp_sysfs_adapter_failed_store);
270 static struct attribute *zfcp_adapter_attrs[] = {
271 &dev_attr_failed.attr,
272 &dev_attr_in_recovery.attr,
273 &dev_attr_port_remove.attr,
274 &dev_attr_port_add.attr,
278 &dev_attr_card_version.attr,
279 &dev_attr_lic_version.attr,
280 &dev_attr_fc_link_speed.attr,
281 &dev_attr_fc_service_class.attr,
282 &dev_attr_fc_topology.attr,
283 &dev_attr_scsi_host_no.attr,
284 &dev_attr_status.attr,
285 &dev_attr_hardware_version.attr,
286 &dev_attr_serial_number.attr,
290 static struct attribute_group zfcp_adapter_attr_group = {
291 .attrs = zfcp_adapter_attrs,
295 * zfcp_sysfs_create_adapter_files - create sysfs adapter files
296 * @dev: pointer to belonging device
298 * Create all attributes of the sysfs representation of an adapter.
301 zfcp_sysfs_adapter_create_files(struct device *dev)
303 return sysfs_create_group(&dev->kobj, &zfcp_adapter_attr_group);
307 * zfcp_sysfs_remove_adapter_files - remove sysfs adapter files
308 * @dev: pointer to belonging device
310 * Remove all attributes of the sysfs representation of an adapter.
313 zfcp_sysfs_adapter_remove_files(struct device *dev)
315 sysfs_remove_group(&dev->kobj, &zfcp_adapter_attr_group);