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: 1.32 $"
31 #include <asm/ccwdev.h>
35 #define ZFCP_LOG_AREA ZFCP_LOG_AREA_CONFIG
37 static const char fc_topologies[5][25] = {
42 {"fabric (virt. adapter)"}
46 * ZFCP_DEFINE_ADAPTER_ATTR
47 * @_name: name of show attribute
48 * @_format: format string
49 * @_value: value to print
51 * Generates attributes for an adapter.
53 #define ZFCP_DEFINE_ADAPTER_ATTR(_name, _format, _value) \
54 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
57 struct zfcp_adapter *adapter; \
59 adapter = dev_get_drvdata(dev); \
60 return sprintf(buf, _format, _value); \
63 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
65 ZFCP_DEFINE_ADAPTER_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
66 ZFCP_DEFINE_ADAPTER_ATTR(wwnn, "0x%016llx\n", adapter->wwnn);
67 ZFCP_DEFINE_ADAPTER_ATTR(wwpn, "0x%016llx\n", adapter->wwpn);
68 ZFCP_DEFINE_ADAPTER_ATTR(s_id, "0x%06x\n", adapter->s_id);
69 ZFCP_DEFINE_ADAPTER_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
70 ZFCP_DEFINE_ADAPTER_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
71 ZFCP_DEFINE_ADAPTER_ATTR(fc_link_speed, "%d Gb/s\n", adapter->fc_link_speed);
72 ZFCP_DEFINE_ADAPTER_ATTR(fc_service_class, "%d\n", adapter->fc_service_class);
73 ZFCP_DEFINE_ADAPTER_ATTR(fc_topology, "%s\n",
74 fc_topologies[adapter->fc_topology]);
75 ZFCP_DEFINE_ADAPTER_ATTR(hardware_version, "0x%08x\n",
76 adapter->hardware_version);
77 ZFCP_DEFINE_ADAPTER_ATTR(serial_number, "%17s\n", adapter->serial_number);
78 ZFCP_DEFINE_ADAPTER_ATTR(scsi_host_no, "0x%x\n", adapter->scsi_host_no);
81 * zfcp_sysfs_adapter_in_recovery_show - recovery state of adapter
82 * @dev: pointer to belonging device
83 * @buf: pointer to input buffer
85 * Show function of "in_recovery" attribute of adapter. Will be
86 * "0" if no error recovery is pending for adapter, otherwise "1".
89 zfcp_sysfs_adapter_in_recovery_show(struct device *dev, char *buf)
91 struct zfcp_adapter *adapter;
93 adapter = dev_get_drvdata(dev);
94 if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status))
95 return sprintf(buf, "1\n");
97 return sprintf(buf, "0\n");
100 static DEVICE_ATTR(in_recovery, S_IRUGO,
101 zfcp_sysfs_adapter_in_recovery_show, NULL);
104 * zfcp_sysfs_port_add_store - add a port to sysfs tree
105 * @dev: pointer to belonging device
106 * @buf: pointer to input buffer
107 * @count: number of bytes in buffer
109 * Store function of the "port_add" attribute of an adapter.
112 zfcp_sysfs_port_add_store(struct device *dev, const char *buf, size_t count)
116 struct zfcp_adapter *adapter;
117 struct zfcp_port *port;
118 int retval = -EINVAL;
120 down(&zfcp_data.config_sema);
122 adapter = dev_get_drvdata(dev);
123 if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
128 wwpn = simple_strtoull(buf, &endp, 0);
129 if ((endp + 1) < (buf + count))
132 port = zfcp_port_enqueue(adapter, wwpn, 0);
138 zfcp_erp_port_reopen(port, 0);
139 zfcp_erp_wait(port->adapter);
142 up(&zfcp_data.config_sema);
143 return retval ? retval : count;
146 static DEVICE_ATTR(port_add, S_IWUSR, NULL, zfcp_sysfs_port_add_store);
149 * zfcp_sysfs_port_remove_store - remove a port from sysfs tree
150 * @dev: pointer to belonging device
151 * @buf: pointer to input buffer
152 * @count: number of bytes in buffer
154 * Store function of the "port_remove" attribute of an adapter.
157 zfcp_sysfs_port_remove_store(struct device *dev, const char *buf, size_t count)
159 struct zfcp_adapter *adapter;
160 struct zfcp_port *port;
165 down(&zfcp_data.config_sema);
167 adapter = dev_get_drvdata(dev);
168 if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
173 wwpn = simple_strtoull(buf, &endp, 0);
174 if ((endp + 1) < (buf + count)) {
179 write_lock_irq(&zfcp_data.config_lock);
180 port = zfcp_get_port_by_wwpn(adapter, wwpn);
181 if (port && (atomic_read(&port->refcount) == 0)) {
183 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
184 list_move(&port->list, &adapter->port_remove_lh);
189 write_unlock_irq(&zfcp_data.config_lock);
196 zfcp_erp_port_shutdown(port, 0);
197 zfcp_erp_wait(adapter);
199 zfcp_port_dequeue(port);
201 up(&zfcp_data.config_sema);
202 return retval ? retval : count;
205 static DEVICE_ATTR(port_remove, S_IWUSR, NULL, zfcp_sysfs_port_remove_store);
208 * zfcp_sysfs_adapter_failed_store - failed state of adapter
209 * @dev: pointer to belonging device
210 * @buf: pointer to input buffer
211 * @count: number of bytes in buffer
213 * Store function of the "failed" attribute of an adapter.
214 * If a "0" gets written to "failed", error recovery will be
215 * started for the belonging adapter.
218 zfcp_sysfs_adapter_failed_store(struct device *dev,
219 const char *buf, size_t count)
221 struct zfcp_adapter *adapter;
226 down(&zfcp_data.config_sema);
228 adapter = dev_get_drvdata(dev);
229 if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
234 val = simple_strtoul(buf, &endp, 0);
235 if (((endp + 1) < (buf + count)) || (val != 0)) {
240 zfcp_erp_modify_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING,
242 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
243 zfcp_erp_wait(adapter);
245 up(&zfcp_data.config_sema);
246 return retval ? retval : count;
250 * zfcp_sysfs_adapter_failed_show - failed state of adapter
251 * @dev: pointer to belonging device
252 * @buf: pointer to input buffer
254 * Show function of "failed" attribute of adapter. Will be
255 * "0" if adapter is working, otherwise "1".
258 zfcp_sysfs_adapter_failed_show(struct device *dev, char *buf)
260 struct zfcp_adapter *adapter;
262 adapter = dev_get_drvdata(dev);
263 if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &adapter->status))
264 return sprintf(buf, "1\n");
266 return sprintf(buf, "0\n");
269 static DEVICE_ATTR(failed, S_IWUSR | S_IRUGO, zfcp_sysfs_adapter_failed_show,
270 zfcp_sysfs_adapter_failed_store);
272 static struct attribute *zfcp_adapter_attrs[] = {
273 &dev_attr_failed.attr,
274 &dev_attr_in_recovery.attr,
275 &dev_attr_port_remove.attr,
276 &dev_attr_port_add.attr,
280 &dev_attr_card_version.attr,
281 &dev_attr_lic_version.attr,
282 &dev_attr_fc_link_speed.attr,
283 &dev_attr_fc_service_class.attr,
284 &dev_attr_fc_topology.attr,
285 &dev_attr_scsi_host_no.attr,
286 &dev_attr_status.attr,
287 &dev_attr_hardware_version.attr,
288 &dev_attr_serial_number.attr,
292 static struct attribute_group zfcp_adapter_attr_group = {
293 .attrs = zfcp_adapter_attrs,
297 * zfcp_sysfs_create_adapter_files - create sysfs adapter files
298 * @dev: pointer to belonging device
300 * Create all attributes of the sysfs representation of an adapter.
303 zfcp_sysfs_adapter_create_files(struct device *dev)
305 return sysfs_create_group(&dev->kobj, &zfcp_adapter_attr_group);
309 * zfcp_sysfs_remove_adapter_files - remove sysfs adapter files
310 * @dev: pointer to belonging device
312 * Remove all attributes of the sysfs representation of an adapter.
315 zfcp_sysfs_adapter_remove_files(struct device *dev)
317 sysfs_remove_group(&dev->kobj, &zfcp_adapter_attr_group);