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>
13 * Andreas Herrmann <aherrman@de.ibm.com>
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2, or (at your option)
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 #define ZFCP_SYSFS_ADAPTER_C_REVISION "$Revision: 1.38 $"
34 #define ZFCP_LOG_AREA ZFCP_LOG_AREA_CONFIG
36 static const char fc_topologies
[5][25] = {
41 "fabric (virt. adapter)"
45 * ZFCP_DEFINE_ADAPTER_ATTR
46 * @_name: name of show attribute
47 * @_format: format string
48 * @_value: value to print
50 * Generates attributes for an adapter.
52 #define ZFCP_DEFINE_ADAPTER_ATTR(_name, _format, _value) \
53 static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, struct device_attribute *attr, \
56 struct zfcp_adapter *adapter; \
58 adapter = dev_get_drvdata(dev); \
59 return sprintf(buf, _format, _value); \
62 static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
64 ZFCP_DEFINE_ADAPTER_ATTR(status
, "0x%08x\n", atomic_read(&adapter
->status
));
65 ZFCP_DEFINE_ADAPTER_ATTR(peer_wwnn
, "0x%016llx\n", adapter
->peer_wwnn
);
66 ZFCP_DEFINE_ADAPTER_ATTR(peer_wwpn
, "0x%016llx\n", adapter
->peer_wwpn
);
67 ZFCP_DEFINE_ADAPTER_ATTR(peer_d_id
, "0x%06x\n", adapter
->peer_d_id
);
68 ZFCP_DEFINE_ADAPTER_ATTR(physical_wwpn
, "0x%016llx\n", adapter
->physical_wwpn
);
69 ZFCP_DEFINE_ADAPTER_ATTR(physical_s_id
, "0x%06x\n", adapter
->physical_s_id
);
70 ZFCP_DEFINE_ADAPTER_ATTR(card_version
, "0x%04x\n", adapter
->hydra_version
);
71 ZFCP_DEFINE_ADAPTER_ATTR(lic_version
, "0x%08x\n", adapter
->fsf_lic_version
);
72 ZFCP_DEFINE_ADAPTER_ATTR(fc_topology
, "%s\n",
73 fc_topologies
[adapter
->fc_topology
]);
74 ZFCP_DEFINE_ADAPTER_ATTR(hardware_version
, "0x%08x\n",
75 adapter
->hardware_version
);
76 ZFCP_DEFINE_ADAPTER_ATTR(in_recovery
, "%d\n", atomic_test_mask
77 (ZFCP_STATUS_COMMON_ERP_INUSE
, &adapter
->status
));
80 * zfcp_sysfs_port_add_store - add a port to sysfs tree
81 * @dev: pointer to belonging device
82 * @buf: pointer to input buffer
83 * @count: number of bytes in buffer
85 * Store function of the "port_add" attribute of an adapter.
88 zfcp_sysfs_port_add_store(struct device
*dev
, struct device_attribute
*attr
, const char *buf
, size_t count
)
92 struct zfcp_adapter
*adapter
;
93 struct zfcp_port
*port
;
96 down(&zfcp_data
.config_sema
);
98 adapter
= dev_get_drvdata(dev
);
99 if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE
, &adapter
->status
)) {
104 wwpn
= simple_strtoull(buf
, &endp
, 0);
105 if ((endp
+ 1) < (buf
+ count
))
108 port
= zfcp_port_enqueue(adapter
, wwpn
, 0, 0);
114 zfcp_erp_port_reopen(port
, 0);
115 zfcp_erp_wait(port
->adapter
);
118 up(&zfcp_data
.config_sema
);
119 return retval
? retval
: (ssize_t
) count
;
122 static DEVICE_ATTR(port_add
, S_IWUSR
, NULL
, zfcp_sysfs_port_add_store
);
125 * zfcp_sysfs_port_remove_store - remove a port from sysfs tree
126 * @dev: pointer to belonging device
127 * @buf: pointer to input buffer
128 * @count: number of bytes in buffer
130 * Store function of the "port_remove" attribute of an adapter.
133 zfcp_sysfs_port_remove_store(struct device
*dev
, struct device_attribute
*attr
, const char *buf
, size_t count
)
135 struct zfcp_adapter
*adapter
;
136 struct zfcp_port
*port
;
141 down(&zfcp_data
.config_sema
);
143 adapter
= dev_get_drvdata(dev
);
144 if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE
, &adapter
->status
)) {
149 wwpn
= simple_strtoull(buf
, &endp
, 0);
150 if ((endp
+ 1) < (buf
+ count
)) {
155 write_lock_irq(&zfcp_data
.config_lock
);
156 port
= zfcp_get_port_by_wwpn(adapter
, wwpn
);
157 if (port
&& (atomic_read(&port
->refcount
) == 0)) {
159 atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE
, &port
->status
);
160 list_move(&port
->list
, &adapter
->port_remove_lh
);
165 write_unlock_irq(&zfcp_data
.config_lock
);
172 zfcp_erp_port_shutdown(port
, 0);
173 zfcp_erp_wait(adapter
);
175 zfcp_port_dequeue(port
);
177 up(&zfcp_data
.config_sema
);
178 return retval
? retval
: (ssize_t
) count
;
181 static DEVICE_ATTR(port_remove
, S_IWUSR
, NULL
, zfcp_sysfs_port_remove_store
);
184 * zfcp_sysfs_adapter_failed_store - failed state of adapter
185 * @dev: pointer to belonging device
186 * @buf: pointer to input buffer
187 * @count: number of bytes in buffer
189 * Store function of the "failed" attribute of an adapter.
190 * If a "0" gets written to "failed", error recovery will be
191 * started for the belonging adapter.
194 zfcp_sysfs_adapter_failed_store(struct device
*dev
, struct device_attribute
*attr
,
195 const char *buf
, size_t count
)
197 struct zfcp_adapter
*adapter
;
202 down(&zfcp_data
.config_sema
);
204 adapter
= dev_get_drvdata(dev
);
205 if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE
, &adapter
->status
)) {
210 val
= simple_strtoul(buf
, &endp
, 0);
211 if (((endp
+ 1) < (buf
+ count
)) || (val
!= 0)) {
216 zfcp_erp_modify_adapter_status(adapter
, ZFCP_STATUS_COMMON_RUNNING
,
218 zfcp_erp_adapter_reopen(adapter
, ZFCP_STATUS_COMMON_ERP_FAILED
);
219 zfcp_erp_wait(adapter
);
221 up(&zfcp_data
.config_sema
);
222 return retval
? retval
: (ssize_t
) count
;
226 * zfcp_sysfs_adapter_failed_show - failed state of adapter
227 * @dev: pointer to belonging device
228 * @buf: pointer to input buffer
230 * Show function of "failed" attribute of adapter. Will be
231 * "0" if adapter is working, otherwise "1".
234 zfcp_sysfs_adapter_failed_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
236 struct zfcp_adapter
*adapter
;
238 adapter
= dev_get_drvdata(dev
);
239 if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED
, &adapter
->status
))
240 return sprintf(buf
, "1\n");
242 return sprintf(buf
, "0\n");
245 static DEVICE_ATTR(failed
, S_IWUSR
| S_IRUGO
, zfcp_sysfs_adapter_failed_show
,
246 zfcp_sysfs_adapter_failed_store
);
248 static struct attribute
*zfcp_adapter_attrs
[] = {
249 &dev_attr_failed
.attr
,
250 &dev_attr_in_recovery
.attr
,
251 &dev_attr_port_remove
.attr
,
252 &dev_attr_port_add
.attr
,
253 &dev_attr_peer_wwnn
.attr
,
254 &dev_attr_peer_wwpn
.attr
,
255 &dev_attr_peer_d_id
.attr
,
256 &dev_attr_physical_wwpn
.attr
,
257 &dev_attr_physical_s_id
.attr
,
258 &dev_attr_card_version
.attr
,
259 &dev_attr_lic_version
.attr
,
260 &dev_attr_fc_topology
.attr
,
261 &dev_attr_status
.attr
,
262 &dev_attr_hardware_version
.attr
,
266 static struct attribute_group zfcp_adapter_attr_group
= {
267 .attrs
= zfcp_adapter_attrs
,
271 * zfcp_sysfs_create_adapter_files - create sysfs adapter files
272 * @dev: pointer to belonging device
274 * Create all attributes of the sysfs representation of an adapter.
277 zfcp_sysfs_adapter_create_files(struct device
*dev
)
279 return sysfs_create_group(&dev
->kobj
, &zfcp_adapter_attr_group
);
283 * zfcp_sysfs_remove_adapter_files - remove sysfs adapter files
284 * @dev: pointer to belonging device
286 * Remove all attributes of the sysfs representation of an adapter.
289 zfcp_sysfs_adapter_remove_files(struct device
*dev
)
291 sysfs_remove_group(&dev
->kobj
, &zfcp_adapter_attr_group
);