Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Andreas Herrmann | 4a9d2d8 | 2006-05-22 18:14:08 +0200 | [diff] [blame] | 2 | * This file is part of the zfcp device driver for |
| 3 | * FCP adapters for IBM System z9 and zSeries. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Andreas Herrmann | 4a9d2d8 | 2006-05-22 18:14:08 +0200 | [diff] [blame] | 5 | * (C) Copyright IBM Corp. 2002, 2006 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2, or (at your option) |
| 10 | * any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | */ |
| 21 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include "zfcp_ext.h" |
| 23 | |
| 24 | #define ZFCP_LOG_AREA ZFCP_LOG_AREA_CONFIG |
| 25 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | /** |
| 27 | * ZFCP_DEFINE_ADAPTER_ATTR |
| 28 | * @_name: name of show attribute |
| 29 | * @_format: format string |
| 30 | * @_value: value to print |
| 31 | * |
| 32 | * Generates attributes for an adapter. |
| 33 | */ |
| 34 | #define ZFCP_DEFINE_ADAPTER_ATTR(_name, _format, _value) \ |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 35 | static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, struct device_attribute *attr, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | char *buf) \ |
| 37 | { \ |
| 38 | struct zfcp_adapter *adapter; \ |
| 39 | \ |
| 40 | adapter = dev_get_drvdata(dev); \ |
| 41 | return sprintf(buf, _format, _value); \ |
| 42 | } \ |
| 43 | \ |
| 44 | static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL); |
| 45 | |
| 46 | ZFCP_DEFINE_ADAPTER_ATTR(status, "0x%08x\n", atomic_read(&adapter->status)); |
| 6f71d9b | 2005-04-10 23:04:28 -0500 | [diff] [blame] | 47 | ZFCP_DEFINE_ADAPTER_ATTR(peer_wwnn, "0x%016llx\n", adapter->peer_wwnn); |
| 48 | ZFCP_DEFINE_ADAPTER_ATTR(peer_wwpn, "0x%016llx\n", adapter->peer_wwpn); |
| 49 | ZFCP_DEFINE_ADAPTER_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | ZFCP_DEFINE_ADAPTER_ATTR(card_version, "0x%04x\n", adapter->hydra_version); |
| 51 | ZFCP_DEFINE_ADAPTER_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | ZFCP_DEFINE_ADAPTER_ATTR(hardware_version, "0x%08x\n", |
| 53 | adapter->hardware_version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | ZFCP_DEFINE_ADAPTER_ATTR(in_recovery, "%d\n", atomic_test_mask |
| 55 | (ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status)); |
| 56 | |
| 57 | /** |
| 58 | * zfcp_sysfs_port_add_store - add a port to sysfs tree |
| 59 | * @dev: pointer to belonging device |
| 60 | * @buf: pointer to input buffer |
| 61 | * @count: number of bytes in buffer |
| 62 | * |
| 63 | * Store function of the "port_add" attribute of an adapter. |
| 64 | */ |
| 65 | static ssize_t |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 66 | zfcp_sysfs_port_add_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | { |
| 68 | wwn_t wwpn; |
| 69 | char *endp; |
| 70 | struct zfcp_adapter *adapter; |
| 71 | struct zfcp_port *port; |
| 72 | int retval = -EINVAL; |
| 73 | |
| 74 | down(&zfcp_data.config_sema); |
| 75 | |
| 76 | adapter = dev_get_drvdata(dev); |
| 77 | if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) { |
| 78 | retval = -EBUSY; |
| 79 | goto out; |
| 80 | } |
| 81 | |
| 82 | wwpn = simple_strtoull(buf, &endp, 0); |
| 83 | if ((endp + 1) < (buf + count)) |
| 84 | goto out; |
| 85 | |
| 86 | port = zfcp_port_enqueue(adapter, wwpn, 0, 0); |
| 87 | if (!port) |
| 88 | goto out; |
| 89 | |
| 90 | retval = 0; |
| 91 | |
| 92 | zfcp_erp_port_reopen(port, 0); |
| 93 | zfcp_erp_wait(port->adapter); |
| 94 | zfcp_port_put(port); |
| 95 | out: |
| 96 | up(&zfcp_data.config_sema); |
| 97 | return retval ? retval : (ssize_t) count; |
| 98 | } |
| 99 | |
| 100 | static DEVICE_ATTR(port_add, S_IWUSR, NULL, zfcp_sysfs_port_add_store); |
| 101 | |
| 102 | /** |
| 103 | * zfcp_sysfs_port_remove_store - remove a port from sysfs tree |
| 104 | * @dev: pointer to belonging device |
| 105 | * @buf: pointer to input buffer |
| 106 | * @count: number of bytes in buffer |
| 107 | * |
| 108 | * Store function of the "port_remove" attribute of an adapter. |
| 109 | */ |
| 110 | static ssize_t |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 111 | zfcp_sysfs_port_remove_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | { |
| 113 | struct zfcp_adapter *adapter; |
| 114 | struct zfcp_port *port; |
| 115 | wwn_t wwpn; |
| 116 | char *endp; |
| 117 | int retval = 0; |
| 118 | |
| 119 | down(&zfcp_data.config_sema); |
| 120 | |
| 121 | adapter = dev_get_drvdata(dev); |
| 122 | if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) { |
| 123 | retval = -EBUSY; |
| 124 | goto out; |
| 125 | } |
| 126 | |
| 127 | wwpn = simple_strtoull(buf, &endp, 0); |
| 128 | if ((endp + 1) < (buf + count)) { |
| 129 | retval = -EINVAL; |
| 130 | goto out; |
| 131 | } |
| 132 | |
| 133 | write_lock_irq(&zfcp_data.config_lock); |
| 134 | port = zfcp_get_port_by_wwpn(adapter, wwpn); |
| 135 | if (port && (atomic_read(&port->refcount) == 0)) { |
| 136 | zfcp_port_get(port); |
| 137 | atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status); |
| 138 | list_move(&port->list, &adapter->port_remove_lh); |
| 139 | } |
| 140 | else { |
| 141 | port = NULL; |
| 142 | } |
| 143 | write_unlock_irq(&zfcp_data.config_lock); |
| 144 | |
| 145 | if (!port) { |
| 146 | retval = -ENXIO; |
| 147 | goto out; |
| 148 | } |
| 149 | |
| 150 | zfcp_erp_port_shutdown(port, 0); |
| 151 | zfcp_erp_wait(adapter); |
| 152 | zfcp_port_put(port); |
| 153 | zfcp_port_dequeue(port); |
| 154 | out: |
| 155 | up(&zfcp_data.config_sema); |
| 156 | return retval ? retval : (ssize_t) count; |
| 157 | } |
| 158 | |
| 159 | static DEVICE_ATTR(port_remove, S_IWUSR, NULL, zfcp_sysfs_port_remove_store); |
| 160 | |
| 161 | /** |
| 162 | * zfcp_sysfs_adapter_failed_store - failed state of adapter |
| 163 | * @dev: pointer to belonging device |
| 164 | * @buf: pointer to input buffer |
| 165 | * @count: number of bytes in buffer |
| 166 | * |
| 167 | * Store function of the "failed" attribute of an adapter. |
| 168 | * If a "0" gets written to "failed", error recovery will be |
| 169 | * started for the belonging adapter. |
| 170 | */ |
| 171 | static ssize_t |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 172 | zfcp_sysfs_adapter_failed_store(struct device *dev, struct device_attribute *attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | const char *buf, size_t count) |
| 174 | { |
| 175 | struct zfcp_adapter *adapter; |
| 176 | unsigned int val; |
| 177 | char *endp; |
| 178 | int retval = 0; |
| 179 | |
| 180 | down(&zfcp_data.config_sema); |
| 181 | |
| 182 | adapter = dev_get_drvdata(dev); |
| 183 | if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) { |
| 184 | retval = -EBUSY; |
| 185 | goto out; |
| 186 | } |
| 187 | |
| 188 | val = simple_strtoul(buf, &endp, 0); |
| 189 | if (((endp + 1) < (buf + count)) || (val != 0)) { |
| 190 | retval = -EINVAL; |
| 191 | goto out; |
| 192 | } |
| 193 | |
| 194 | zfcp_erp_modify_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING, |
| 195 | ZFCP_SET); |
| 196 | zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED); |
| 197 | zfcp_erp_wait(adapter); |
| 198 | out: |
| 199 | up(&zfcp_data.config_sema); |
| 200 | return retval ? retval : (ssize_t) count; |
| 201 | } |
| 202 | |
| 203 | /** |
| 204 | * zfcp_sysfs_adapter_failed_show - failed state of adapter |
| 205 | * @dev: pointer to belonging device |
| 206 | * @buf: pointer to input buffer |
| 207 | * |
| 208 | * Show function of "failed" attribute of adapter. Will be |
| 209 | * "0" if adapter is working, otherwise "1". |
| 210 | */ |
| 211 | static ssize_t |
Yani Ioannou | 10523b3 | 2005-05-17 06:43:37 -0400 | [diff] [blame] | 212 | zfcp_sysfs_adapter_failed_show(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | { |
| 214 | struct zfcp_adapter *adapter; |
| 215 | |
| 216 | adapter = dev_get_drvdata(dev); |
| 217 | if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &adapter->status)) |
| 218 | return sprintf(buf, "1\n"); |
| 219 | else |
| 220 | return sprintf(buf, "0\n"); |
| 221 | } |
| 222 | |
| 223 | static DEVICE_ATTR(failed, S_IWUSR | S_IRUGO, zfcp_sysfs_adapter_failed_show, |
| 224 | zfcp_sysfs_adapter_failed_store); |
| 225 | |
| 226 | static struct attribute *zfcp_adapter_attrs[] = { |
| 227 | &dev_attr_failed.attr, |
| 228 | &dev_attr_in_recovery.attr, |
| 229 | &dev_attr_port_remove.attr, |
| 230 | &dev_attr_port_add.attr, |
| 6f71d9b | 2005-04-10 23:04:28 -0500 | [diff] [blame] | 231 | &dev_attr_peer_wwnn.attr, |
| 232 | &dev_attr_peer_wwpn.attr, |
| 233 | &dev_attr_peer_d_id.attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | &dev_attr_card_version.attr, |
| 235 | &dev_attr_lic_version.attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | &dev_attr_status.attr, |
| 237 | &dev_attr_hardware_version.attr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | NULL |
| 239 | }; |
| 240 | |
| 241 | static struct attribute_group zfcp_adapter_attr_group = { |
| 242 | .attrs = zfcp_adapter_attrs, |
| 243 | }; |
| 244 | |
| 245 | /** |
| 246 | * zfcp_sysfs_create_adapter_files - create sysfs adapter files |
| 247 | * @dev: pointer to belonging device |
| 248 | * |
| 249 | * Create all attributes of the sysfs representation of an adapter. |
| 250 | */ |
| 251 | int |
| 252 | zfcp_sysfs_adapter_create_files(struct device *dev) |
| 253 | { |
| 254 | return sysfs_create_group(&dev->kobj, &zfcp_adapter_attr_group); |
| 255 | } |
| 256 | |
| 257 | /** |
| 258 | * zfcp_sysfs_remove_adapter_files - remove sysfs adapter files |
| 259 | * @dev: pointer to belonging device |
| 260 | * |
| 261 | * Remove all attributes of the sysfs representation of an adapter. |
| 262 | */ |
| 263 | void |
| 264 | zfcp_sysfs_adapter_remove_files(struct device *dev) |
| 265 | { |
| 266 | sysfs_remove_group(&dev->kobj, &zfcp_adapter_attr_group); |
| 267 | } |
| 268 | |
| 269 | #undef ZFCP_LOG_AREA |