1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
|
/*
* zfcp device driver
*
* sysfs attributes for CCW device.
*
* Copyright IBM Corporation 2002, 2008
*/
#include "zfcp_ext.h"
/**
* ZFCP_DEFINE_ADAPTER_ATTR
* @_name: name of show attribute
* @_format: format string
* @_value: value to print
*
* Generates attributes for an adapter.
*/
#define ZFCP_DEFINE_ADAPTER_ATTR(_name, _format, _value) \
static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct zfcp_adapter *adapter; \
\
adapter = dev_get_drvdata(dev); \
return sprintf(buf, _format, _value); \
} \
\
static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
ZFCP_DEFINE_ADAPTER_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
ZFCP_DEFINE_ADAPTER_ATTR(peer_wwnn, "0x%016llx\n", adapter->peer_wwnn);
ZFCP_DEFINE_ADAPTER_ATTR(peer_wwpn, "0x%016llx\n", adapter->peer_wwpn);
ZFCP_DEFINE_ADAPTER_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
ZFCP_DEFINE_ADAPTER_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
ZFCP_DEFINE_ADAPTER_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
ZFCP_DEFINE_ADAPTER_ATTR(hardware_version, "0x%08x\n",
adapter->hardware_version);
ZFCP_DEFINE_ADAPTER_ATTR(in_recovery, "%d\n", atomic_test_mask
(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status));
/**
* zfcp_sysfs_port_add_store - add a port to sysfs tree
* @dev: pointer to belonging device
* @buf: pointer to input buffer
* @count: number of bytes in buffer
*
* Store function of the "port_add" attribute of an adapter.
*/
static ssize_t
zfcp_sysfs_port_add_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
wwn_t wwpn;
char *endp;
struct zfcp_adapter *adapter;
struct zfcp_port *port;
int retval = -EINVAL;
down(&zfcp_data.config_sema);
adapter = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
retval = -EBUSY;
goto out;
}
wwpn = simple_strtoull(buf, &endp, 0);
if ((endp + 1) < (buf + count))
goto out;
port = zfcp_port_enqueue(adapter, wwpn, 0, 0);
if (!port)
goto out;
retval = 0;
zfcp_erp_port_reopen(port, 0, 91, NULL);
zfcp_erp_wait(port->adapter);
zfcp_port_put(port);
out:
up(&zfcp_data.config_sema);
return retval ? retval : (ssize_t) count;
}
static DEVICE_ATTR(port_add, S_IWUSR, NULL, zfcp_sysfs_port_add_store);
/**
* zfcp_sysfs_port_rescan - trigger manual port rescan
* @dev: pointer to belonging device
* @attr: pointer to struct device_attribute
* @buf: pointer to input buffer
* @count: number of bytes in buffer
*/
static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct zfcp_adapter *adapter;
int ret;
adapter = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status))
return -EBUSY;
ret = zfcp_scan_ports(adapter);
return ret ? ret : (ssize_t) count;
}
static DEVICE_ATTR(port_rescan, S_IWUSR, NULL, zfcp_sysfs_port_rescan_store);
/**
* zfcp_sysfs_port_remove_store - remove a port from sysfs tree
* @dev: pointer to belonging device
* @buf: pointer to input buffer
* @count: number of bytes in buffer
*
* Store function of the "port_remove" attribute of an adapter.
*/
static ssize_t
zfcp_sysfs_port_remove_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct zfcp_adapter *adapter;
struct zfcp_port *port;
wwn_t wwpn;
char *endp;
int retval = 0;
down(&zfcp_data.config_sema);
adapter = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
retval = -EBUSY;
goto out;
}
wwpn = simple_strtoull(buf, &endp, 0);
if ((endp + 1) < (buf + count)) {
retval = -EINVAL;
goto out;
}
write_lock_irq(&zfcp_data.config_lock);
port = zfcp_get_port_by_wwpn(adapter, wwpn);
if (port && (atomic_read(&port->refcount) == 0)) {
zfcp_port_get(port);
atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
list_move(&port->list, &adapter->port_remove_lh);
}
else {
port = NULL;
}
write_unlock_irq(&zfcp_data.config_lock);
if (!port) {
retval = -ENXIO;
goto out;
}
zfcp_erp_port_shutdown(port, 0, 92, NULL);
zfcp_erp_wait(adapter);
zfcp_port_put(port);
zfcp_port_dequeue(port);
out:
up(&zfcp_data.config_sema);
return retval ? retval : (ssize_t) count;
}
static DEVICE_ATTR(port_remove, S_IWUSR, NULL, zfcp_sysfs_port_remove_store);
/**
* zfcp_sysfs_adapter_failed_store - failed state of adapter
* @dev: pointer to belonging device
* @buf: pointer to input buffer
* @count: number of bytes in buffer
*
* Store function of the "failed" attribute of an adapter.
* If a "0" gets written to "failed", error recovery will be
* started for the belonging adapter.
*/
static ssize_t
zfcp_sysfs_adapter_failed_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct zfcp_adapter *adapter;
unsigned int val;
char *endp;
int retval = 0;
down(&zfcp_data.config_sema);
adapter = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
retval = -EBUSY;
goto out;
}
val = simple_strtoul(buf, &endp, 0);
if (((endp + 1) < (buf + count)) || (val != 0)) {
retval = -EINVAL;
goto out;
}
zfcp_erp_modify_adapter_status(adapter, 44, NULL,
ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 93,
NULL);
zfcp_erp_wait(adapter);
out:
up(&zfcp_data.config_sema);
return retval ? retval : (ssize_t) count;
}
/**
* zfcp_sysfs_adapter_failed_show - failed state of adapter
* @dev: pointer to belonging device
* @buf: pointer to input buffer
*
* Show function of "failed" attribute of adapter. Will be
* "0" if adapter is working, otherwise "1".
*/
static ssize_t
zfcp_sysfs_adapter_failed_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct zfcp_adapter *adapter;
adapter = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &adapter->status))
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
}
static DEVICE_ATTR(failed, S_IWUSR | S_IRUGO, zfcp_sysfs_adapter_failed_show,
zfcp_sysfs_adapter_failed_store);
static struct attribute *zfcp_adapter_attrs[] = {
&dev_attr_failed.attr,
&dev_attr_in_recovery.attr,
&dev_attr_port_remove.attr,
&dev_attr_port_add.attr,
&dev_attr_port_rescan.attr,
&dev_attr_peer_wwnn.attr,
&dev_attr_peer_wwpn.attr,
&dev_attr_peer_d_id.attr,
&dev_attr_card_version.attr,
&dev_attr_lic_version.attr,
&dev_attr_status.attr,
&dev_attr_hardware_version.attr,
NULL
};
static struct attribute_group zfcp_adapter_attr_group = {
.attrs = zfcp_adapter_attrs,
};
/**
* zfcp_sysfs_create_adapter_files - create sysfs adapter files
* @dev: pointer to belonging device
*
* Create all attributes of the sysfs representation of an adapter.
*/
int
zfcp_sysfs_adapter_create_files(struct device *dev)
{
return sysfs_create_group(&dev->kobj, &zfcp_adapter_attr_group);
}
/**
* zfcp_sysfs_remove_adapter_files - remove sysfs adapter files
* @dev: pointer to belonging device
*
* Remove all attributes of the sysfs representation of an adapter.
*/
void
zfcp_sysfs_adapter_remove_files(struct device *dev)
{
sysfs_remove_group(&dev->kobj, &zfcp_adapter_attr_group);
}
|
