Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 2 | * zfcp device driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 4 | * Implementation of FSF commands. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 6 | * Copyright IBM Corporation 2002, 2008 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | */ |
| 8 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | #include "zfcp_ext.h" |
| 10 | |
Christof Schmitt | 287ac01 | 2008-07-02 10:56:40 +0200 | [diff] [blame] | 11 | static void zfcp_fsf_request_timeout_handler(unsigned long data) |
| 12 | { |
| 13 | struct zfcp_adapter *adapter = (struct zfcp_adapter *) data; |
| 14 | zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 62, |
| 15 | NULL); |
| 16 | } |
| 17 | |
| 18 | static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req, |
| 19 | unsigned long timeout) |
| 20 | { |
| 21 | fsf_req->timer.function = zfcp_fsf_request_timeout_handler; |
| 22 | fsf_req->timer.data = (unsigned long) fsf_req->adapter; |
| 23 | fsf_req->timer.expires = jiffies + timeout; |
| 24 | add_timer(&fsf_req->timer); |
| 25 | } |
| 26 | |
| 27 | static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req) |
| 28 | { |
| 29 | BUG_ON(!fsf_req->erp_action); |
| 30 | fsf_req->timer.function = zfcp_erp_timeout_handler; |
| 31 | fsf_req->timer.data = (unsigned long) fsf_req->erp_action; |
| 32 | fsf_req->timer.expires = jiffies + 30 * HZ; |
| 33 | add_timer(&fsf_req->timer); |
| 34 | } |
| 35 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | /* association between FSF command and FSF QTCB type */ |
| 37 | static u32 fsf_qtcb_type[] = { |
| 38 | [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND, |
| 39 | [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND, |
| 40 | [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND, |
| 41 | [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND, |
| 42 | [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND, |
| 43 | [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND, |
| 44 | [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND, |
| 45 | [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND, |
| 46 | [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND, |
| 47 | [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND, |
| 48 | [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND, |
| 49 | [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND, |
| 50 | [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND |
| 51 | }; |
| 52 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 53 | static const char *zfcp_act_subtable_type[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | "unknown", "OS", "WWPN", "DID", "LUN" |
| 55 | }; |
| 56 | |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 57 | static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table) |
| 58 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 59 | u16 subtable = table >> 16; |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 60 | u16 rule = table & 0xffff; |
| 61 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 62 | if (subtable && subtable < ARRAY_SIZE(zfcp_act_subtable_type)) |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 63 | dev_warn(&adapter->ccw_device->dev, |
| 64 | "Access denied in subtable %s, rule %d.\n", |
| 65 | zfcp_act_subtable_type[subtable], rule); |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 66 | } |
| 67 | |
| 68 | static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req, |
| 69 | struct zfcp_port *port) |
| 70 | { |
| 71 | struct fsf_qtcb_header *header = &req->qtcb->header; |
| 72 | dev_warn(&req->adapter->ccw_device->dev, |
| 73 | "Access denied, cannot send command to port 0x%016Lx.\n", |
| 74 | port->wwpn); |
| 75 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
| 76 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); |
| 77 | zfcp_erp_port_access_denied(port, 55, req); |
| 78 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 79 | } |
| 80 | |
| 81 | static void zfcp_fsf_access_denied_unit(struct zfcp_fsf_req *req, |
| 82 | struct zfcp_unit *unit) |
| 83 | { |
| 84 | struct fsf_qtcb_header *header = &req->qtcb->header; |
| 85 | dev_warn(&req->adapter->ccw_device->dev, |
| 86 | "Access denied for unit 0x%016Lx on port 0x%016Lx.\n", |
| 87 | unit->fcp_lun, unit->port->wwpn); |
| 88 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]); |
| 89 | zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]); |
| 90 | zfcp_erp_unit_access_denied(unit, 59, req); |
| 91 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 92 | } |
| 93 | |
| 94 | static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req) |
| 95 | { |
| 96 | dev_err(&req->adapter->ccw_device->dev, |
| 97 | "Required FC class not supported by adapter, " |
| 98 | "shutting down adapter.\n"); |
| 99 | zfcp_erp_adapter_shutdown(req->adapter, 0, 123, req); |
| 100 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 101 | } |
| 102 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 103 | /** |
| 104 | * zfcp_fsf_req_free - free memory used by fsf request |
| 105 | * @fsf_req: pointer to struct zfcp_fsf_req |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | */ |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 107 | void zfcp_fsf_req_free(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 109 | if (likely(req->pool)) { |
| 110 | mempool_free(req, req->pool); |
Heiko Carstens | dd52e0e | 2006-09-18 22:28:49 +0200 | [diff] [blame] | 111 | return; |
| 112 | } |
| 113 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 114 | if (req->qtcb) { |
| 115 | kmem_cache_free(zfcp_data.fsf_req_qtcb_cache, req); |
Heiko Carstens | dd52e0e | 2006-09-18 22:28:49 +0200 | [diff] [blame] | 116 | return; |
| 117 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | } |
| 119 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 120 | /** |
| 121 | * zfcp_fsf_req_dismiss_all - dismiss all fsf requests |
| 122 | * @adapter: pointer to struct zfcp_adapter |
| 123 | * |
Martin Peschke | 869b2b4 | 2007-05-09 11:01:20 +0200 | [diff] [blame] | 124 | * Never ever call this without shutting down the adapter first. |
| 125 | * Otherwise the adapter would continue using and corrupting s390 storage. |
| 126 | * Included BUG_ON() call to ensure this is done. |
| 127 | * ERP is supposed to be the only user of this function. |
Volker Sameske | fea9d6c | 2006-08-02 11:05:16 +0200 | [diff] [blame] | 128 | */ |
Swen Schillig | 6fcc471 | 2007-02-07 13:17:57 +0100 | [diff] [blame] | 129 | void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) |
Volker Sameske | fea9d6c | 2006-08-02 11:05:16 +0200 | [diff] [blame] | 130 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 131 | struct zfcp_fsf_req *req, *tmp; |
Volker Sameske | fea9d6c | 2006-08-02 11:05:16 +0200 | [diff] [blame] | 132 | unsigned long flags; |
Swen Schillig | 6fcc471 | 2007-02-07 13:17:57 +0100 | [diff] [blame] | 133 | LIST_HEAD(remove_queue); |
Martin Peschke | 869b2b4 | 2007-05-09 11:01:20 +0200 | [diff] [blame] | 134 | unsigned int i; |
Volker Sameske | fea9d6c | 2006-08-02 11:05:16 +0200 | [diff] [blame] | 135 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 136 | BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP); |
Volker Sameske | fea9d6c | 2006-08-02 11:05:16 +0200 | [diff] [blame] | 137 | spin_lock_irqsave(&adapter->req_list_lock, flags); |
Martin Peschke | 869b2b4 | 2007-05-09 11:01:20 +0200 | [diff] [blame] | 138 | for (i = 0; i < REQUEST_LIST_SIZE; i++) |
Swen Schillig | 6fcc471 | 2007-02-07 13:17:57 +0100 | [diff] [blame] | 139 | list_splice_init(&adapter->req_list[i], &remove_queue); |
Volker Sameske | fea9d6c | 2006-08-02 11:05:16 +0200 | [diff] [blame] | 140 | spin_unlock_irqrestore(&adapter->req_list_lock, flags); |
| 141 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 142 | list_for_each_entry_safe(req, tmp, &remove_queue, list) { |
| 143 | list_del(&req->list); |
| 144 | req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; |
| 145 | zfcp_fsf_req_complete(req); |
Swen Schillig | 6fcc471 | 2007-02-07 13:17:57 +0100 | [diff] [blame] | 146 | } |
Volker Sameske | fea9d6c | 2006-08-02 11:05:16 +0200 | [diff] [blame] | 147 | } |
| 148 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 149 | static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 151 | struct fsf_status_read_buffer *sr_buf = req->data; |
| 152 | struct zfcp_adapter *adapter = req->adapter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | struct zfcp_port *port; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 154 | int d_id = sr_buf->d_id & ZFCP_DID_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | unsigned long flags; |
| 156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | read_lock_irqsave(&zfcp_data.config_lock, flags); |
| 158 | list_for_each_entry(port, &adapter->port_list_head, list) |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 159 | if (port->d_id == d_id) { |
| 160 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); |
| 161 | switch (sr_buf->status_subtype) { |
| 162 | case FSF_STATUS_READ_SUB_CLOSE_PHYS_PORT: |
| 163 | zfcp_erp_port_reopen(port, 0, 101, req); |
| 164 | break; |
| 165 | case FSF_STATUS_READ_SUB_ERROR_PORT: |
| 166 | zfcp_erp_port_shutdown(port, 0, 122, req); |
| 167 | break; |
| 168 | } |
| 169 | return; |
| 170 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | read_unlock_irqrestore(&zfcp_data.config_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | } |
| 173 | |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 174 | static void zfcp_fsf_bit_error_threshold(struct zfcp_fsf_req *req) |
| 175 | { |
| 176 | struct zfcp_adapter *adapter = req->adapter; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 177 | struct fsf_status_read_buffer *sr_buf = req->data; |
| 178 | struct fsf_bit_error_payload *err = &sr_buf->payload.bit_error; |
| 179 | |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 180 | dev_warn(&adapter->ccw_device->dev, |
| 181 | "Warning: bit error threshold data " |
| 182 | "received for the adapter: " |
| 183 | "link failures = %i, loss of sync errors = %i, " |
| 184 | "loss of signal errors = %i, " |
| 185 | "primitive sequence errors = %i, " |
| 186 | "invalid transmission word errors = %i, " |
| 187 | "CRC errors = %i).\n", |
| 188 | err->link_failure_error_count, |
| 189 | err->loss_of_sync_error_count, |
| 190 | err->loss_of_signal_error_count, |
| 191 | err->primitive_sequence_error_count, |
| 192 | err->invalid_transmission_word_error_count, |
| 193 | err->crc_error_count); |
| 194 | dev_warn(&adapter->ccw_device->dev, |
| 195 | "Additional bit error threshold data of the adapter: " |
| 196 | "primitive sequence event time-outs = %i, " |
| 197 | "elastic buffer overrun errors = %i, " |
| 198 | "advertised receive buffer-to-buffer credit = %i, " |
| 199 | "current receice buffer-to-buffer credit = %i, " |
| 200 | "advertised transmit buffer-to-buffer credit = %i, " |
| 201 | "current transmit buffer-to-buffer credit = %i).\n", |
| 202 | err->primitive_sequence_event_timeout_count, |
| 203 | err->elastic_buffer_overrun_error_count, |
| 204 | err->advertised_receive_b2b_credit, |
| 205 | err->current_receive_b2b_credit, |
| 206 | err->advertised_transmit_b2b_credit, |
| 207 | err->current_transmit_b2b_credit); |
| 208 | } |
| 209 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 210 | static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, u8 id, |
| 211 | struct fsf_link_down_info *link_down) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 213 | struct zfcp_adapter *adapter = req->adapter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 215 | if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED) |
| 216 | return; |
| 217 | |
| 218 | atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status); |
| 219 | |
| 220 | if (!link_down) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | goto out; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 222 | |
| 223 | switch (link_down->error_code) { |
| 224 | case FSF_PSQ_LINK_NO_LIGHT: |
| 225 | dev_warn(&req->adapter->ccw_device->dev, |
| 226 | "The local link is down: no light detected.\n"); |
| 227 | break; |
| 228 | case FSF_PSQ_LINK_WRAP_PLUG: |
| 229 | dev_warn(&req->adapter->ccw_device->dev, |
| 230 | "The local link is down: wrap plug detected.\n"); |
| 231 | break; |
| 232 | case FSF_PSQ_LINK_NO_FCP: |
| 233 | dev_warn(&req->adapter->ccw_device->dev, |
| 234 | "The local link is down: " |
| 235 | "adjacent node on link does not support FCP.\n"); |
| 236 | break; |
| 237 | case FSF_PSQ_LINK_FIRMWARE_UPDATE: |
| 238 | dev_warn(&req->adapter->ccw_device->dev, |
| 239 | "The local link is down: " |
| 240 | "firmware update in progress.\n"); |
| 241 | break; |
| 242 | case FSF_PSQ_LINK_INVALID_WWPN: |
| 243 | dev_warn(&req->adapter->ccw_device->dev, |
| 244 | "The local link is down: " |
| 245 | "duplicate or invalid WWPN detected.\n"); |
| 246 | break; |
| 247 | case FSF_PSQ_LINK_NO_NPIV_SUPPORT: |
| 248 | dev_warn(&req->adapter->ccw_device->dev, |
| 249 | "The local link is down: " |
| 250 | "no support for NPIV by Fabric.\n"); |
| 251 | break; |
| 252 | case FSF_PSQ_LINK_NO_FCP_RESOURCES: |
| 253 | dev_warn(&req->adapter->ccw_device->dev, |
| 254 | "The local link is down: " |
| 255 | "out of resource in FCP daughtercard.\n"); |
| 256 | break; |
| 257 | case FSF_PSQ_LINK_NO_FABRIC_RESOURCES: |
| 258 | dev_warn(&req->adapter->ccw_device->dev, |
| 259 | "The local link is down: " |
| 260 | "out of resource in Fabric.\n"); |
| 261 | break; |
| 262 | case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE: |
| 263 | dev_warn(&req->adapter->ccw_device->dev, |
| 264 | "The local link is down: " |
| 265 | "unable to login to Fabric.\n"); |
| 266 | break; |
| 267 | case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED: |
| 268 | dev_warn(&req->adapter->ccw_device->dev, |
| 269 | "WWPN assignment file corrupted on adapter.\n"); |
| 270 | break; |
| 271 | case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED: |
| 272 | dev_warn(&req->adapter->ccw_device->dev, |
| 273 | "Mode table corrupted on adapter.\n"); |
| 274 | break; |
| 275 | case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT: |
| 276 | dev_warn(&req->adapter->ccw_device->dev, |
| 277 | "No WWPN for assignment table on adapter.\n"); |
| 278 | break; |
| 279 | default: |
| 280 | dev_warn(&req->adapter->ccw_device->dev, |
| 281 | "The local link to adapter is down.\n"); |
| 282 | } |
| 283 | out: |
| 284 | zfcp_erp_adapter_failed(adapter, id, req); |
| 285 | } |
| 286 | |
| 287 | static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req) |
| 288 | { |
| 289 | struct zfcp_adapter *adapter = req->adapter; |
| 290 | struct fsf_status_read_buffer *sr_buf = req->data; |
| 291 | struct fsf_link_down_info *ldi = |
| 292 | (struct fsf_link_down_info *) &sr_buf->payload; |
| 293 | |
| 294 | switch (sr_buf->status_subtype) { |
| 295 | case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK: |
| 296 | dev_warn(&adapter->ccw_device->dev, |
| 297 | "Physical link is down.\n"); |
| 298 | zfcp_fsf_link_down_info_eval(req, 38, ldi); |
| 299 | break; |
| 300 | case FSF_STATUS_READ_SUB_FDISC_FAILED: |
| 301 | dev_warn(&adapter->ccw_device->dev, |
| 302 | "Local link is down " |
| 303 | "due to failed FDISC login.\n"); |
| 304 | zfcp_fsf_link_down_info_eval(req, 39, ldi); |
| 305 | break; |
| 306 | case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE: |
| 307 | dev_warn(&adapter->ccw_device->dev, |
| 308 | "Local link is down " |
| 309 | "due to firmware update on adapter.\n"); |
| 310 | zfcp_fsf_link_down_info_eval(req, 40, NULL); |
| 311 | }; |
| 312 | } |
| 313 | |
| 314 | static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req) |
| 315 | { |
| 316 | struct zfcp_adapter *adapter = req->adapter; |
| 317 | struct fsf_status_read_buffer *sr_buf = req->data; |
| 318 | |
| 319 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
| 320 | zfcp_hba_dbf_event_fsf_unsol("dism", adapter, sr_buf); |
| 321 | mempool_free(sr_buf, adapter->pool.data_status_read); |
| 322 | zfcp_fsf_req_free(req); |
| 323 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | } |
| 325 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 326 | zfcp_hba_dbf_event_fsf_unsol("read", adapter, sr_buf); |
Maxim Shchetynin | 8a36e45 | 2005-09-13 21:50:38 +0200 | [diff] [blame] | 327 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 328 | switch (sr_buf->status_type) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | case FSF_STATUS_READ_PORT_CLOSED: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 330 | zfcp_fsf_status_read_port_closed(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | case FSF_STATUS_READ_INCOMING_ELS: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 333 | zfcp_fc_incoming_els(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | case FSF_STATUS_READ_SENSE_DATA_AVAIL: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | case FSF_STATUS_READ_BIT_ERROR_THRESHOLD: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 338 | zfcp_fsf_bit_error_threshold(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | case FSF_STATUS_READ_LINK_DOWN: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 341 | zfcp_fsf_status_read_link_down(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | case FSF_STATUS_READ_LINK_UP: |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 344 | dev_info(&adapter->ccw_device->dev, |
| 345 | "Local link was replugged.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | /* All ports should be marked as ready to run again */ |
Martin Peschke | 1f6f712 | 2008-04-18 12:51:55 +0200 | [diff] [blame] | 347 | zfcp_erp_modify_adapter_status(adapter, 30, NULL, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | ZFCP_STATUS_COMMON_RUNNING, |
| 349 | ZFCP_SET); |
| 350 | zfcp_erp_adapter_reopen(adapter, |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 351 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
| 352 | ZFCP_STATUS_COMMON_ERP_FAILED, |
| 353 | 102, req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | break; |
Maxim Shchetynin | 9eb69af | 2006-01-05 09:56:47 +0100 | [diff] [blame] | 355 | case FSF_STATUS_READ_NOTIFICATION_LOST: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 356 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED) |
| 357 | zfcp_erp_adapter_access_changed(adapter, 135, req); |
| 358 | if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS) |
Swen Schillig | cc8c282 | 2008-06-10 18:21:00 +0200 | [diff] [blame] | 359 | schedule_work(&adapter->scan_work); |
Maxim Shchetynin | 9eb69af | 2006-01-05 09:56:47 +0100 | [diff] [blame] | 360 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | case FSF_STATUS_READ_CFDC_UPDATED: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 362 | zfcp_erp_adapter_access_changed(adapter, 136, req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | break; |
Maxim Shchetynin | aef4a98 | 2005-09-13 21:51:16 +0200 | [diff] [blame] | 364 | case FSF_STATUS_READ_FEATURE_UPDATE_ALERT: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 365 | adapter->adapter_features = sr_buf->payload.word[0]; |
Maxim Shchetynin | aef4a98 | 2005-09-13 21:51:16 +0200 | [diff] [blame] | 366 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | } |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 368 | |
| 369 | mempool_free(sr_buf, adapter->pool.data_status_read); |
| 370 | zfcp_fsf_req_free(req); |
Swen Schillig | d26ab06 | 2008-05-19 12:17:37 +0200 | [diff] [blame] | 371 | |
| 372 | atomic_inc(&adapter->stat_miss); |
| 373 | schedule_work(&adapter->stat_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | } |
| 375 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 376 | static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 378 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
| 379 | case FSF_SQ_FCP_RSP_AVAILABLE: |
| 380 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
| 381 | case FSF_SQ_NO_RETRY_POSSIBLE: |
| 382 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
| 383 | return; |
| 384 | case FSF_SQ_COMMAND_ABORTED: |
| 385 | req->status |= ZFCP_STATUS_FSFREQ_ABORTED; |
| 386 | break; |
| 387 | case FSF_SQ_NO_RECOM: |
| 388 | dev_err(&req->adapter->ccw_device->dev, |
| 389 | "No recommendation could be given for a " |
| 390 | "problem on the adapter.\n"); |
| 391 | zfcp_erp_adapter_shutdown(req->adapter, 0, 121, req); |
| 392 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | } |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 394 | /* all non-return stats set FSFREQ_ERROR*/ |
| 395 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 396 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 398 | static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req) |
| 399 | { |
| 400 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
| 401 | return; |
Andreas Herrmann | 059c97d | 2005-09-13 21:47:52 +0200 | [diff] [blame] | 402 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 403 | switch (req->qtcb->header.fsf_status) { |
| 404 | case FSF_UNKNOWN_COMMAND: |
| 405 | dev_err(&req->adapter->ccw_device->dev, |
| 406 | "Command issued by the device driver (0x%x) is " |
| 407 | "not known by the adapter.\n", |
| 408 | req->qtcb->header.fsf_command); |
| 409 | zfcp_erp_adapter_shutdown(req->adapter, 0, 120, req); |
| 410 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | case FSF_ADAPTER_STATUS_AVAILABLE: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 413 | zfcp_fsf_fsfstatus_qual_eval(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | } |
| 417 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 418 | static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 420 | struct zfcp_adapter *adapter = req->adapter; |
| 421 | struct fsf_qtcb *qtcb = req->qtcb; |
| 422 | union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 424 | zfcp_hba_dbf_event_fsf_response(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 426 | if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) { |
| 427 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
| 428 | ZFCP_STATUS_FSFREQ_RETRY; /* only for SCSI cmnds. */ |
| 429 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | } |
| 431 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 432 | switch (qtcb->prefix.prot_status) { |
| 433 | case FSF_PROT_GOOD: |
| 434 | case FSF_PROT_FSF_STATUS_PRESENTED: |
| 435 | return; |
| 436 | case FSF_PROT_QTCB_VERSION_ERROR: |
| 437 | dev_err(&adapter->ccw_device->dev, |
| 438 | "The QTCB version requested by zfcp (0x%x) is not " |
| 439 | "supported by the FCP adapter (lowest supported " |
| 440 | "0x%x, highest supported 0x%x).\n", |
| 441 | FSF_QTCB_CURRENT_VERSION, psq->word[0], |
| 442 | psq->word[1]); |
| 443 | zfcp_erp_adapter_shutdown(adapter, 0, 117, req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | break; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 445 | case FSF_PROT_ERROR_STATE: |
| 446 | case FSF_PROT_SEQ_NUMB_ERROR: |
| 447 | zfcp_erp_adapter_reopen(adapter, 0, 98, req); |
| 448 | req->status |= ZFCP_STATUS_FSFREQ_RETRY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | break; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 450 | case FSF_PROT_UNSUPP_QTCB_TYPE: |
| 451 | dev_err(&adapter->ccw_device->dev, |
| 452 | "Packet header type used by the device driver is " |
| 453 | "incompatible with that used on the adapter.\n"); |
| 454 | zfcp_erp_adapter_shutdown(adapter, 0, 118, req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | break; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 456 | case FSF_PROT_HOST_CONNECTION_INITIALIZING: |
| 457 | atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT, |
| 458 | &adapter->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | break; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 460 | case FSF_PROT_DUPLICATE_REQUEST_ID: |
| 461 | dev_err(&adapter->ccw_device->dev, |
| 462 | "The request identifier 0x%Lx is ambiguous.\n", |
| 463 | (unsigned long long)qtcb->bottom.support.req_handle); |
| 464 | zfcp_erp_adapter_shutdown(adapter, 0, 78, req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | break; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 466 | case FSF_PROT_LINK_DOWN: |
| 467 | zfcp_fsf_link_down_info_eval(req, 37, &psq->link_down_info); |
| 468 | /* FIXME: reopening adapter now? better wait for link up */ |
| 469 | zfcp_erp_adapter_reopen(adapter, 0, 79, req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | break; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 471 | case FSF_PROT_REEST_QUEUE: |
| 472 | /* All ports should be marked as ready to run again */ |
| 473 | zfcp_erp_modify_adapter_status(adapter, 28, NULL, |
| 474 | ZFCP_STATUS_COMMON_RUNNING, |
| 475 | ZFCP_SET); |
| 476 | zfcp_erp_adapter_reopen(adapter, |
| 477 | ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED | |
| 478 | ZFCP_STATUS_COMMON_ERP_FAILED, 99, req); |
| 479 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | default: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 481 | dev_err(&adapter->ccw_device->dev, |
| 482 | "Transfer protocol status information" |
| 483 | "provided by the adapter (0x%x) " |
| 484 | "is not compatible with the device driver.\n", |
| 485 | qtcb->prefix.prot_status); |
| 486 | zfcp_erp_adapter_shutdown(adapter, 0, 119, req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | } |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 488 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | } |
| 490 | |
| 491 | /** |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 492 | * zfcp_fsf_req_complete - process completion of a FSF request |
| 493 | * @fsf_req: The FSF request that has been completed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | * |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 495 | * When a request has been completed either from the FCP adapter, |
| 496 | * or it has been dismissed due to a queue shutdown, this function |
| 497 | * is called to process the completion status and trigger further |
| 498 | * events related to the FSF request. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | */ |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 500 | void zfcp_fsf_req_complete(struct zfcp_fsf_req *req) |
| 501 | { |
| 502 | if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) { |
| 503 | zfcp_fsf_status_read_handler(req); |
| 504 | return; |
| 505 | } |
| 506 | |
| 507 | del_timer(&req->timer); |
| 508 | zfcp_fsf_protstatus_eval(req); |
| 509 | zfcp_fsf_fsfstatus_eval(req); |
| 510 | req->handler(req); |
| 511 | |
| 512 | if (req->erp_action) |
Christof Schmitt | 287ac01 | 2008-07-02 10:56:40 +0200 | [diff] [blame] | 513 | zfcp_erp_notify(req->erp_action, 0); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 514 | req->status |= ZFCP_STATUS_FSFREQ_COMPLETED; |
| 515 | |
| 516 | if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP)) |
| 517 | zfcp_fsf_req_free(req); |
| 518 | else |
| 519 | /* notify initiator waiting for the requests completion */ |
| 520 | /* |
| 521 | * FIXME: Race! We must not access fsf_req here as it might have been |
| 522 | * cleaned up already due to the set ZFCP_STATUS_FSFREQ_COMPLETED |
| 523 | * flag. It's an improbable case. But, we have the same paranoia for |
| 524 | * the cleanup flag already. |
| 525 | * Might better be handled using complete()? |
| 526 | * (setting the flag and doing wakeup ought to be atomic |
| 527 | * with regard to checking the flag as long as waitqueue is |
| 528 | * part of the to be released structure) |
| 529 | */ |
| 530 | wake_up(&req->completion_wq); |
| 531 | } |
| 532 | |
| 533 | static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | { |
| 535 | struct fsf_qtcb_bottom_config *bottom; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 536 | struct zfcp_adapter *adapter = req->adapter; |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 537 | struct Scsi_Host *shost = adapter->scsi_host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 539 | bottom = &req->qtcb->bottom.config; |
| 540 | |
| 541 | if (req->data) |
| 542 | memcpy(req->data, bottom, sizeof(*bottom)); |
| 543 | |
| 544 | fc_host_node_name(shost) = bottom->nport_serv_param.wwnn; |
| 545 | fc_host_port_name(shost) = bottom->nport_serv_param.wwpn; |
| 546 | fc_host_port_id(shost) = bottom->s_id & ZFCP_DID_MASK; |
| 547 | fc_host_speed(shost) = bottom->fc_link_speed; |
| 548 | fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3; |
| 549 | |
| 550 | adapter->hydra_version = bottom->adapter_type; |
| 551 | adapter->timer_ticks = bottom->timer_interval; |
| 552 | |
| 553 | if (fc_host_permanent_port_name(shost) == -1) |
| 554 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); |
| 555 | |
| 556 | switch (bottom->fc_topology) { |
| 557 | case FSF_TOPO_P2P: |
| 558 | adapter->peer_d_id = bottom->peer_d_id & ZFCP_DID_MASK; |
| 559 | adapter->peer_wwpn = bottom->plogi_payload.wwpn; |
| 560 | adapter->peer_wwnn = bottom->plogi_payload.wwnn; |
| 561 | fc_host_port_type(shost) = FC_PORTTYPE_PTP; |
| 562 | if (req->erp_action) |
| 563 | dev_info(&adapter->ccw_device->dev, |
| 564 | "Point-to-Point fibrechannel " |
| 565 | "configuration detected.\n"); |
| 566 | break; |
| 567 | case FSF_TOPO_FABRIC: |
| 568 | fc_host_port_type(shost) = FC_PORTTYPE_NPORT; |
| 569 | if (req->erp_action) |
| 570 | dev_info(&adapter->ccw_device->dev, |
| 571 | "Switched fabric fibrechannel " |
| 572 | "network detected.\n"); |
| 573 | break; |
| 574 | case FSF_TOPO_AL: |
| 575 | fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; |
| 576 | dev_err(&adapter->ccw_device->dev, |
| 577 | "Unsupported arbitrated loop fibrechannel " |
| 578 | "topology detected, shutting down " |
| 579 | "adapter.\n"); |
| 580 | zfcp_erp_adapter_shutdown(adapter, 0, 127, req); |
| 581 | return -EIO; |
| 582 | default: |
| 583 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; |
| 584 | dev_err(&adapter->ccw_device->dev, |
| 585 | "The fibrechannel topology reported by the" |
| 586 | " adapter is not known by the zfcp driver," |
| 587 | " shutting down adapter.\n"); |
| 588 | zfcp_erp_adapter_shutdown(adapter, 0, 128, req); |
| 589 | return -EIO; |
| 590 | } |
| 591 | |
| 592 | return 0; |
| 593 | } |
| 594 | |
| 595 | static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req) |
| 596 | { |
| 597 | struct zfcp_adapter *adapter = req->adapter; |
| 598 | struct fsf_qtcb *qtcb = req->qtcb; |
| 599 | struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config; |
| 600 | struct Scsi_Host *shost = adapter->scsi_host; |
| 601 | |
| 602 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
| 603 | return; |
| 604 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | adapter->fsf_lic_version = bottom->lic_version; |
Maxim Shchetynin | aef4a98 | 2005-09-13 21:51:16 +0200 | [diff] [blame] | 606 | adapter->adapter_features = bottom->adapter_features; |
| 607 | adapter->connection_features = bottom->connection_features; |
| 6f71d9b | 2005-04-10 23:04:28 -0500 | [diff] [blame] | 608 | adapter->peer_wwpn = 0; |
| 609 | adapter->peer_wwnn = 0; |
| 610 | adapter->peer_d_id = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 612 | switch (qtcb->header.fsf_status) { |
| 613 | case FSF_GOOD: |
| 614 | if (zfcp_fsf_exchange_config_evaluate(req)) |
| 615 | return; |
Swen Schillig | 52ef11a | 2007-08-28 09:31:09 +0200 | [diff] [blame] | 616 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 617 | if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) { |
| 618 | dev_err(&adapter->ccw_device->dev, |
| 619 | "Maximum QTCB size (%d bytes) allowed by " |
| 620 | "the adapter is lower than the minimum " |
| 621 | "required by the driver (%ld bytes).\n", |
| 622 | bottom->max_qtcb_size, |
| 623 | sizeof(struct fsf_qtcb)); |
| 624 | zfcp_erp_adapter_shutdown(adapter, 0, 129, req); |
| 625 | return; |
| 626 | } |
| 627 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
| 628 | &adapter->status); |
| 629 | break; |
| 630 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 631 | fc_host_node_name(shost) = 0; |
| 632 | fc_host_port_name(shost) = 0; |
| 633 | fc_host_port_id(shost) = 0; |
| 634 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; |
Andreas Herrmann | ad757cd | 2006-01-13 02:26:11 +0100 | [diff] [blame] | 635 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | adapter->hydra_version = 0; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 637 | |
| 638 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, |
| 639 | &adapter->status); |
| 640 | |
| 641 | zfcp_fsf_link_down_info_eval(req, 42, |
| 642 | &qtcb->header.fsf_status_qual.link_down_info); |
| 643 | break; |
| 644 | default: |
| 645 | zfcp_erp_adapter_shutdown(adapter, 0, 130, req); |
| 646 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | } |
| 648 | |
Maxim Shchetynin | aef4a98 | 2005-09-13 21:51:16 +0200 | [diff] [blame] | 649 | if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | adapter->hardware_version = bottom->hardware_version; |
Andreas Herrmann | 13e1e1f | 2005-09-19 16:56:17 +0200 | [diff] [blame] | 651 | memcpy(fc_host_serial_number(shost), bottom->serial_number, |
| 652 | min(FC_SERIAL_NUMBER_SIZE, 17)); |
| 653 | EBCASC(fc_host_serial_number(shost), |
| 654 | min(FC_SERIAL_NUMBER_SIZE, 17)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | } |
| 656 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 657 | if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) { |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 658 | dev_err(&adapter->ccw_device->dev, |
| 659 | "The adapter only supports newer control block " |
| 660 | "versions, try updated device driver.\n"); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 661 | zfcp_erp_adapter_shutdown(adapter, 0, 125, req); |
| 662 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | } |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 664 | if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) { |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 665 | dev_err(&adapter->ccw_device->dev, |
| 666 | "The adapter only supports older control block " |
| 667 | "versions, consider a microcode upgrade.\n"); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 668 | zfcp_erp_adapter_shutdown(adapter, 0, 126, req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | } |
| 671 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 672 | static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 674 | struct zfcp_adapter *adapter = req->adapter; |
| 675 | struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port; |
| 676 | struct Scsi_Host *shost = adapter->scsi_host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 678 | if (req->data) |
| 679 | memcpy(req->data, bottom, sizeof(*bottom)); |
Andreas Herrmann | 2f8f3ed | 2006-02-11 01:41:50 +0100 | [diff] [blame] | 680 | |
| 681 | if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) |
| 682 | fc_host_permanent_port_name(shost) = bottom->wwpn; |
| 683 | else |
| 684 | fc_host_permanent_port_name(shost) = fc_host_port_name(shost); |
| 685 | fc_host_maxframe_size(shost) = bottom->maximum_frame_size; |
| 686 | fc_host_supported_speeds(shost) = bottom->supported_speed; |
| 687 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 689 | static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 691 | struct zfcp_adapter *adapter = req->adapter; |
| 692 | struct fsf_qtcb *qtcb = req->qtcb; |
Andreas Herrmann | 2f8f3ed | 2006-02-11 01:41:50 +0100 | [diff] [blame] | 693 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 694 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | return; |
| 696 | |
Maxim Shchetynin | aef4a98 | 2005-09-13 21:51:16 +0200 | [diff] [blame] | 697 | switch (qtcb->header.fsf_status) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 698 | case FSF_GOOD: |
| 699 | zfcp_fsf_exchange_port_evaluate(req); |
Maxim Shchetynin | aef4a98 | 2005-09-13 21:51:16 +0200 | [diff] [blame] | 700 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); |
Maxim Shchetynin | aef4a98 | 2005-09-13 21:51:16 +0200 | [diff] [blame] | 701 | break; |
Maxim Shchetynin | aef4a98 | 2005-09-13 21:51:16 +0200 | [diff] [blame] | 702 | case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 703 | zfcp_fsf_exchange_port_evaluate(req); |
Maxim Shchetynin | aef4a98 | 2005-09-13 21:51:16 +0200 | [diff] [blame] | 704 | atomic_set_mask(ZFCP_STATUS_ADAPTER_XPORT_OK, &adapter->status); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 705 | zfcp_fsf_link_down_info_eval(req, 43, |
Maxim Shchetynin | aef4a98 | 2005-09-13 21:51:16 +0200 | [diff] [blame] | 706 | &qtcb->header.fsf_status_qual.link_down_info); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 707 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | } |
| 709 | } |
| 710 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 711 | static int zfcp_fsf_sbal_check(struct zfcp_qdio_queue *queue) |
| 712 | { |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 713 | spin_lock_bh(&queue->lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 714 | if (atomic_read(&queue->count)) |
| 715 | return 1; |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 716 | spin_unlock_bh(&queue->lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 717 | return 0; |
| 718 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 720 | static int zfcp_fsf_req_sbal_get(struct zfcp_adapter *adapter) |
| 721 | { |
| 722 | long ret; |
| 723 | struct zfcp_qdio_queue *req_q = &adapter->req_q; |
| 724 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 725 | spin_unlock_bh(&req_q->lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 726 | ret = wait_event_interruptible_timeout(adapter->request_wq, |
| 727 | zfcp_fsf_sbal_check(req_q), 5 * HZ); |
| 728 | if (ret > 0) |
| 729 | return 0; |
| 730 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 731 | spin_lock_bh(&req_q->lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 732 | return -EIO; |
| 733 | } |
| 734 | |
| 735 | static struct zfcp_fsf_req *zfcp_fsf_alloc_noqtcb(mempool_t *pool) |
| 736 | { |
| 737 | struct zfcp_fsf_req *req; |
| 738 | req = mempool_alloc(pool, GFP_ATOMIC); |
| 739 | if (!req) |
| 740 | return NULL; |
| 741 | memset(req, 0, sizeof(*req)); |
| 742 | return req; |
| 743 | } |
| 744 | |
| 745 | static struct zfcp_fsf_req *zfcp_fsf_alloc_qtcb(mempool_t *pool) |
| 746 | { |
| 747 | struct zfcp_fsf_req_qtcb *qtcb; |
| 748 | |
| 749 | if (likely(pool)) |
| 750 | qtcb = mempool_alloc(pool, GFP_ATOMIC); |
| 751 | else |
| 752 | qtcb = kmem_cache_alloc(zfcp_data.fsf_req_qtcb_cache, |
| 753 | GFP_ATOMIC); |
| 754 | if (unlikely(!qtcb)) |
| 755 | return NULL; |
| 756 | |
| 757 | memset(qtcb, 0, sizeof(*qtcb)); |
| 758 | qtcb->fsf_req.qtcb = &qtcb->qtcb; |
| 759 | qtcb->fsf_req.pool = pool; |
| 760 | |
| 761 | return &qtcb->fsf_req; |
| 762 | } |
| 763 | |
| 764 | static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_adapter *adapter, |
| 765 | u32 fsf_cmd, int req_flags, |
| 766 | mempool_t *pool) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | { |
| 768 | volatile struct qdio_buffer_element *sbale; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 770 | struct zfcp_fsf_req *req; |
| 771 | struct zfcp_qdio_queue *req_q = &adapter->req_q; |
| 772 | |
| 773 | if (req_flags & ZFCP_REQ_NO_QTCB) |
| 774 | req = zfcp_fsf_alloc_noqtcb(pool); |
| 775 | else |
| 776 | req = zfcp_fsf_alloc_qtcb(pool); |
| 777 | |
| 778 | if (unlikely(!req)) |
| 779 | return ERR_PTR(-EIO); |
| 780 | |
| 781 | if (adapter->req_no == 0) |
| 782 | adapter->req_no++; |
| 783 | |
| 784 | INIT_LIST_HEAD(&req->list); |
| 785 | init_timer(&req->timer); |
| 786 | init_waitqueue_head(&req->completion_wq); |
| 787 | |
| 788 | req->adapter = adapter; |
| 789 | req->fsf_command = fsf_cmd; |
| 790 | req->req_id = adapter->req_no++; |
| 791 | req->sbal_number = 1; |
| 792 | req->sbal_first = req_q->first; |
| 793 | req->sbal_last = req_q->first; |
| 794 | req->sbale_curr = 1; |
| 795 | |
| 796 | sbale = zfcp_qdio_sbale_req(req); |
| 797 | sbale[0].addr = (void *) req->req_id; |
| 798 | sbale[0].flags |= SBAL_FLAGS0_COMMAND; |
| 799 | |
| 800 | if (likely(req->qtcb)) { |
| 801 | req->qtcb->prefix.req_seq_no = req->adapter->fsf_req_seq_no; |
| 802 | req->qtcb->prefix.req_id = req->req_id; |
| 803 | req->qtcb->prefix.ulp_info = 26; |
| 804 | req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command]; |
| 805 | req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION; |
| 806 | req->qtcb->header.req_handle = req->req_id; |
| 807 | req->qtcb->header.fsf_command = req->fsf_command; |
| 808 | req->seq_no = adapter->fsf_req_seq_no; |
| 809 | req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no; |
| 810 | sbale[1].addr = (void *) req->qtcb; |
| 811 | sbale[1].length = sizeof(struct fsf_qtcb); |
| 812 | } |
| 813 | |
| 814 | if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) { |
| 815 | zfcp_fsf_req_free(req); |
| 816 | return ERR_PTR(-EIO); |
| 817 | } |
| 818 | |
| 819 | if (likely(req_flags & ZFCP_REQ_AUTO_CLEANUP)) |
| 820 | req->status |= ZFCP_STATUS_FSFREQ_CLEANUP; |
| 821 | |
| 822 | return req; |
| 823 | } |
| 824 | |
| 825 | static int zfcp_fsf_req_send(struct zfcp_fsf_req *req) |
| 826 | { |
| 827 | struct zfcp_adapter *adapter = req->adapter; |
| 828 | struct zfcp_qdio_queue *req_q = &adapter->req_q; |
| 829 | int idx; |
| 830 | |
| 831 | /* put allocated FSF request into hash table */ |
| 832 | spin_lock(&adapter->req_list_lock); |
| 833 | idx = zfcp_reqlist_hash(req->req_id); |
| 834 | list_add_tail(&req->list, &adapter->req_list[idx]); |
| 835 | spin_unlock(&adapter->req_list_lock); |
| 836 | |
| 837 | req->issued = get_clock(); |
| 838 | if (zfcp_qdio_send(req)) { |
| 839 | /* Queues are down..... */ |
| 840 | del_timer(&req->timer); |
| 841 | spin_lock(&adapter->req_list_lock); |
| 842 | zfcp_reqlist_remove(adapter, req); |
| 843 | spin_unlock(&adapter->req_list_lock); |
| 844 | /* undo changes in request queue made for this request */ |
| 845 | atomic_add(req->sbal_number, &req_q->count); |
| 846 | req_q->first -= req->sbal_number; |
| 847 | req_q->first += QDIO_MAX_BUFFERS_PER_Q; |
| 848 | req_q->first %= QDIO_MAX_BUFFERS_PER_Q; /* wrap */ |
| 849 | zfcp_erp_adapter_reopen(adapter, 0, 116, req); |
| 850 | return -EIO; |
| 851 | } |
| 852 | |
| 853 | /* Don't increase for unsolicited status */ |
| 854 | if (req->qtcb) |
| 855 | adapter->fsf_req_seq_no++; |
| 856 | |
| 857 | return 0; |
| 858 | } |
| 859 | |
| 860 | /** |
| 861 | * zfcp_fsf_status_read - send status read request |
| 862 | * @adapter: pointer to struct zfcp_adapter |
| 863 | * @req_flags: request flags |
| 864 | * Returns: 0 on success, ERROR otherwise |
| 865 | */ |
| 866 | int zfcp_fsf_status_read(struct zfcp_adapter *adapter) |
| 867 | { |
| 868 | struct zfcp_fsf_req *req; |
| 869 | struct fsf_status_read_buffer *sr_buf; |
| 870 | volatile struct qdio_buffer_element *sbale; |
| 871 | int retval = -EIO; |
| 872 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 873 | spin_lock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 874 | if (zfcp_fsf_req_sbal_get(adapter)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 877 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_UNSOLICITED_STATUS, |
| 878 | ZFCP_REQ_NO_QTCB, |
| 879 | adapter->pool.fsf_req_status_read); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 880 | if (IS_ERR(req)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 881 | retval = PTR_ERR(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | goto out; |
| 883 | } |
| 884 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 885 | sbale = zfcp_qdio_sbale_req(req); |
| 886 | sbale[0].flags |= SBAL_FLAGS0_TYPE_STATUS; |
| 887 | sbale[2].flags |= SBAL_FLAGS_LAST_ENTRY; |
| 888 | req->sbale_curr = 2; |
| 889 | |
| 890 | sr_buf = mempool_alloc(adapter->pool.data_status_read, GFP_ATOMIC); |
| 891 | if (!sr_buf) { |
| 892 | retval = -ENOMEM; |
| 893 | goto failed_buf; |
| 894 | } |
| 895 | memset(sr_buf, 0, sizeof(*sr_buf)); |
| 896 | req->data = sr_buf; |
| 897 | sbale = zfcp_qdio_sbale_curr(req); |
| 898 | sbale->addr = (void *) sr_buf; |
| 899 | sbale->length = sizeof(*sr_buf); |
| 900 | |
| 901 | retval = zfcp_fsf_req_send(req); |
| 902 | if (retval) |
| 903 | goto failed_req_send; |
| 904 | |
| 905 | goto out; |
| 906 | |
| 907 | failed_req_send: |
| 908 | mempool_free(sr_buf, adapter->pool.data_status_read); |
| 909 | failed_buf: |
| 910 | zfcp_fsf_req_free(req); |
| 911 | zfcp_hba_dbf_event_fsf_unsol("fail", adapter, NULL); |
| 912 | out: |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 913 | spin_unlock_bh(&adapter->req_q.lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | return retval; |
| 915 | } |
| 916 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 917 | static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 919 | struct zfcp_unit *unit = req->data; |
| 920 | union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 922 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
| 923 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 925 | switch (req->qtcb->header.fsf_status) { |
| 926 | case FSF_PORT_HANDLE_NOT_VALID: |
| 927 | if (fsq->word[0] == fsq->word[1]) { |
| 928 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 104, |
| 929 | req); |
| 930 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 931 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | break; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 933 | case FSF_LUN_HANDLE_NOT_VALID: |
| 934 | if (fsq->word[0] == fsq->word[1]) { |
| 935 | zfcp_erp_port_reopen(unit->port, 0, 105, req); |
| 936 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 937 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | break; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 939 | case FSF_FCP_COMMAND_DOES_NOT_EXIST: |
| 940 | req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | break; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 942 | case FSF_PORT_BOXED: |
| 943 | zfcp_erp_port_boxed(unit->port, 47, req); |
| 944 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
| 945 | ZFCP_STATUS_FSFREQ_RETRY; |
| 946 | break; |
| 947 | case FSF_LUN_BOXED: |
| 948 | zfcp_erp_unit_boxed(unit, 48, req); |
| 949 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
| 950 | ZFCP_STATUS_FSFREQ_RETRY; |
| 951 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | case FSF_ADAPTER_STATUS_AVAILABLE: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 953 | switch (fsq->word[0]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 955 | zfcp_test_link(unit->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 957 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | break; |
| 959 | } |
| 960 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | case FSF_GOOD: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 962 | req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED; |
| 963 | break; |
| 964 | } |
| 965 | } |
| 966 | |
| 967 | /** |
| 968 | * zfcp_fsf_abort_fcp_command - abort running SCSI command |
| 969 | * @old_req_id: unsigned long |
| 970 | * @adapter: pointer to struct zfcp_adapter |
| 971 | * @unit: pointer to struct zfcp_unit |
| 972 | * @req_flags: integer specifying the request flags |
| 973 | * Returns: pointer to struct zfcp_fsf_req |
| 974 | * |
| 975 | * FIXME(design): should be watched by a timeout !!! |
| 976 | */ |
| 977 | |
| 978 | struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long old_req_id, |
| 979 | struct zfcp_adapter *adapter, |
| 980 | struct zfcp_unit *unit, |
| 981 | int req_flags) |
| 982 | { |
| 983 | volatile struct qdio_buffer_element *sbale; |
| 984 | struct zfcp_fsf_req *req = NULL; |
| 985 | |
| 986 | spin_lock(&adapter->req_q.lock); |
| 987 | if (!atomic_read(&adapter->req_q.count)) |
| 988 | goto out; |
| 989 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_ABORT_FCP_CMND, |
| 990 | req_flags, adapter->pool.fsf_req_abort); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 991 | if (IS_ERR(req)) |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 992 | goto out; |
| 993 | |
| 994 | if (unlikely(!(atomic_read(&unit->status) & |
| 995 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
| 996 | goto out_error_free; |
| 997 | |
| 998 | sbale = zfcp_qdio_sbale_req(req); |
| 999 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
| 1000 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
| 1001 | |
| 1002 | req->data = unit; |
| 1003 | req->handler = zfcp_fsf_abort_fcp_command_handler; |
| 1004 | req->qtcb->header.lun_handle = unit->handle; |
| 1005 | req->qtcb->header.port_handle = unit->port->handle; |
| 1006 | req->qtcb->bottom.support.req_handle = (u64) old_req_id; |
| 1007 | |
| 1008 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
| 1009 | if (!zfcp_fsf_req_send(req)) |
| 1010 | goto out; |
| 1011 | |
| 1012 | out_error_free: |
| 1013 | zfcp_fsf_req_free(req); |
| 1014 | req = NULL; |
| 1015 | out: |
| 1016 | spin_unlock(&adapter->req_q.lock); |
| 1017 | return req; |
| 1018 | } |
| 1019 | |
| 1020 | static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req) |
| 1021 | { |
| 1022 | struct zfcp_adapter *adapter = req->adapter; |
| 1023 | struct zfcp_send_ct *send_ct = req->data; |
| 1024 | struct zfcp_port *port = send_ct->port; |
| 1025 | struct fsf_qtcb_header *header = &req->qtcb->header; |
| 1026 | |
| 1027 | send_ct->status = -EINVAL; |
| 1028 | |
| 1029 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
| 1030 | goto skip_fsfstatus; |
| 1031 | |
| 1032 | switch (header->fsf_status) { |
| 1033 | case FSF_GOOD: |
| 1034 | zfcp_san_dbf_event_ct_response(req); |
| 1035 | send_ct->status = 0; |
| 1036 | break; |
| 1037 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
| 1038 | zfcp_fsf_class_not_supp(req); |
| 1039 | break; |
| 1040 | case FSF_ADAPTER_STATUS_AVAILABLE: |
| 1041 | switch (header->fsf_status_qual.word[0]){ |
| 1042 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
| 1043 | zfcp_test_link(port); |
| 1044 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
| 1045 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 1046 | break; |
| 1047 | } |
| 1048 | break; |
| 1049 | case FSF_ACCESS_DENIED: |
| 1050 | zfcp_fsf_access_denied_port(req, port); |
| 1051 | break; |
| 1052 | case FSF_PORT_BOXED: |
| 1053 | zfcp_erp_port_boxed(port, 49, req); |
| 1054 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
| 1055 | ZFCP_STATUS_FSFREQ_RETRY; |
| 1056 | break; |
| 1057 | case FSF_PORT_HANDLE_NOT_VALID: |
| 1058 | zfcp_erp_adapter_reopen(adapter, 0, 106, req); |
| 1059 | case FSF_GENERIC_COMMAND_REJECTED: |
| 1060 | case FSF_PAYLOAD_SIZE_MISMATCH: |
| 1061 | case FSF_REQUEST_SIZE_TOO_LARGE: |
| 1062 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
| 1063 | case FSF_SBAL_MISMATCH: |
| 1064 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 1065 | break; |
| 1066 | } |
| 1067 | |
| 1068 | skip_fsfstatus: |
| 1069 | if (send_ct->handler) |
| 1070 | send_ct->handler(send_ct->handler_data); |
| 1071 | } |
| 1072 | |
| 1073 | static int zfcp_fsf_setup_sbals(struct zfcp_fsf_req *req, |
| 1074 | struct scatterlist *sg_req, |
| 1075 | struct scatterlist *sg_resp, int max_sbals) |
| 1076 | { |
| 1077 | int bytes; |
| 1078 | |
| 1079 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, |
| 1080 | sg_req, max_sbals); |
| 1081 | if (bytes <= 0) |
| 1082 | return -ENOMEM; |
| 1083 | req->qtcb->bottom.support.req_buf_length = bytes; |
| 1084 | req->sbale_curr = ZFCP_LAST_SBALE_PER_SBAL; |
| 1085 | |
| 1086 | bytes = zfcp_qdio_sbals_from_sg(req, SBAL_FLAGS0_TYPE_WRITE_READ, |
| 1087 | sg_resp, max_sbals); |
| 1088 | if (bytes <= 0) |
| 1089 | return -ENOMEM; |
| 1090 | req->qtcb->bottom.support.resp_buf_length = bytes; |
| 1091 | |
| 1092 | return 0; |
| 1093 | } |
| 1094 | |
| 1095 | /** |
| 1096 | * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS) |
| 1097 | * @ct: pointer to struct zfcp_send_ct with data for request |
| 1098 | * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req |
| 1099 | * @erp_action: if non-null the Generic Service request sent within ERP |
| 1100 | */ |
| 1101 | int zfcp_fsf_send_ct(struct zfcp_send_ct *ct, mempool_t *pool, |
| 1102 | struct zfcp_erp_action *erp_action) |
| 1103 | { |
| 1104 | struct zfcp_port *port = ct->port; |
| 1105 | struct zfcp_adapter *adapter = port->adapter; |
| 1106 | struct zfcp_fsf_req *req; |
| 1107 | int ret = -EIO; |
| 1108 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1109 | spin_lock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1110 | if (zfcp_fsf_req_sbal_get(adapter)) |
| 1111 | goto out; |
| 1112 | |
| 1113 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_GENERIC, |
| 1114 | ZFCP_REQ_AUTO_CLEANUP, pool); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 1115 | if (IS_ERR(req)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1116 | ret = PTR_ERR(req); |
| 1117 | goto out; |
| 1118 | } |
| 1119 | |
| 1120 | ret = zfcp_fsf_setup_sbals(req, ct->req, ct->resp, |
| 1121 | FSF_MAX_SBALS_PER_REQ); |
| 1122 | if (ret) |
| 1123 | goto failed_send; |
| 1124 | |
| 1125 | req->handler = zfcp_fsf_send_ct_handler; |
| 1126 | req->qtcb->header.port_handle = port->handle; |
| 1127 | req->qtcb->bottom.support.service_class = FSF_CLASS_3; |
| 1128 | req->qtcb->bottom.support.timeout = ct->timeout; |
| 1129 | req->data = ct; |
| 1130 | |
| 1131 | zfcp_san_dbf_event_ct_request(req); |
| 1132 | |
| 1133 | if (erp_action) { |
| 1134 | erp_action->fsf_req = req; |
| 1135 | req->erp_action = erp_action; |
Christof Schmitt | 287ac01 | 2008-07-02 10:56:40 +0200 | [diff] [blame] | 1136 | zfcp_fsf_start_erp_timer(req); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1137 | } else |
| 1138 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
| 1139 | |
| 1140 | ret = zfcp_fsf_req_send(req); |
| 1141 | if (ret) |
| 1142 | goto failed_send; |
| 1143 | |
| 1144 | goto out; |
| 1145 | |
| 1146 | failed_send: |
| 1147 | zfcp_fsf_req_free(req); |
| 1148 | if (erp_action) |
| 1149 | erp_action->fsf_req = NULL; |
| 1150 | out: |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1151 | spin_unlock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1152 | return ret; |
| 1153 | } |
| 1154 | |
| 1155 | static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req) |
| 1156 | { |
| 1157 | struct zfcp_send_els *send_els = req->data; |
| 1158 | struct zfcp_port *port = send_els->port; |
| 1159 | struct fsf_qtcb_header *header = &req->qtcb->header; |
| 1160 | |
| 1161 | send_els->status = -EINVAL; |
| 1162 | |
| 1163 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
| 1164 | goto skip_fsfstatus; |
| 1165 | |
| 1166 | switch (header->fsf_status) { |
| 1167 | case FSF_GOOD: |
| 1168 | zfcp_san_dbf_event_els_response(req); |
| 1169 | send_els->status = 0; |
| 1170 | break; |
| 1171 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
| 1172 | zfcp_fsf_class_not_supp(req); |
| 1173 | break; |
| 1174 | case FSF_ADAPTER_STATUS_AVAILABLE: |
| 1175 | switch (header->fsf_status_qual.word[0]){ |
| 1176 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
| 1177 | if (port && (send_els->ls_code != ZFCP_LS_ADISC)) |
| 1178 | zfcp_test_link(port); |
| 1179 | /*fall through */ |
| 1180 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
| 1181 | case FSF_SQ_RETRY_IF_POSSIBLE: |
| 1182 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 1183 | break; |
| 1184 | } |
| 1185 | break; |
| 1186 | case FSF_ELS_COMMAND_REJECTED: |
| 1187 | case FSF_PAYLOAD_SIZE_MISMATCH: |
| 1188 | case FSF_REQUEST_SIZE_TOO_LARGE: |
| 1189 | case FSF_RESPONSE_SIZE_TOO_LARGE: |
| 1190 | break; |
| 1191 | case FSF_ACCESS_DENIED: |
| 1192 | zfcp_fsf_access_denied_port(req, port); |
| 1193 | break; |
| 1194 | case FSF_SBAL_MISMATCH: |
| 1195 | /* should never occure, avoided in zfcp_fsf_send_els */ |
| 1196 | /* fall through */ |
| 1197 | default: |
| 1198 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 1199 | break; |
| 1200 | } |
| 1201 | skip_fsfstatus: |
| 1202 | if (send_els->handler) |
| 1203 | send_els->handler(send_els->handler_data); |
| 1204 | } |
| 1205 | |
| 1206 | /** |
| 1207 | * zfcp_fsf_send_els - initiate an ELS command (FC-FS) |
| 1208 | * @els: pointer to struct zfcp_send_els with data for the command |
| 1209 | */ |
| 1210 | int zfcp_fsf_send_els(struct zfcp_send_els *els) |
| 1211 | { |
| 1212 | struct zfcp_fsf_req *req; |
| 1213 | struct zfcp_adapter *adapter = els->adapter; |
| 1214 | struct fsf_qtcb_bottom_support *bottom; |
| 1215 | int ret = -EIO; |
| 1216 | |
| 1217 | if (unlikely(!(atomic_read(&els->port->status) & |
| 1218 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
| 1219 | return -EBUSY; |
| 1220 | |
| 1221 | spin_lock(&adapter->req_q.lock); |
| 1222 | if (!atomic_read(&adapter->req_q.count)) |
| 1223 | goto out; |
| 1224 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_SEND_ELS, |
| 1225 | ZFCP_REQ_AUTO_CLEANUP, NULL); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 1226 | if (IS_ERR(req)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1227 | ret = PTR_ERR(req); |
| 1228 | goto out; |
| 1229 | } |
| 1230 | |
| 1231 | ret = zfcp_fsf_setup_sbals(req, els->req, els->resp, |
| 1232 | FSF_MAX_SBALS_PER_ELS_REQ); |
| 1233 | if (ret) |
| 1234 | goto failed_send; |
| 1235 | |
| 1236 | bottom = &req->qtcb->bottom.support; |
| 1237 | req->handler = zfcp_fsf_send_els_handler; |
| 1238 | bottom->d_id = els->d_id; |
| 1239 | bottom->service_class = FSF_CLASS_3; |
| 1240 | bottom->timeout = 2 * R_A_TOV; |
| 1241 | req->data = els; |
| 1242 | |
| 1243 | zfcp_san_dbf_event_els_request(req); |
| 1244 | |
| 1245 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
| 1246 | ret = zfcp_fsf_req_send(req); |
| 1247 | if (ret) |
| 1248 | goto failed_send; |
| 1249 | |
| 1250 | goto out; |
| 1251 | |
| 1252 | failed_send: |
| 1253 | zfcp_fsf_req_free(req); |
| 1254 | out: |
| 1255 | spin_unlock(&adapter->req_q.lock); |
| 1256 | return ret; |
| 1257 | } |
| 1258 | |
| 1259 | int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action) |
| 1260 | { |
| 1261 | volatile struct qdio_buffer_element *sbale; |
| 1262 | struct zfcp_fsf_req *req; |
| 1263 | struct zfcp_adapter *adapter = erp_action->adapter; |
| 1264 | int retval = -EIO; |
| 1265 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1266 | spin_lock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1267 | if (!atomic_read(&adapter->req_q.count)) |
| 1268 | goto out; |
| 1269 | req = zfcp_fsf_req_create(adapter, |
| 1270 | FSF_QTCB_EXCHANGE_CONFIG_DATA, |
| 1271 | ZFCP_REQ_AUTO_CLEANUP, |
| 1272 | adapter->pool.fsf_req_erp); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 1273 | if (IS_ERR(req)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1274 | retval = PTR_ERR(req); |
| 1275 | goto out; |
| 1276 | } |
| 1277 | |
| 1278 | sbale = zfcp_qdio_sbale_req(req); |
| 1279 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
| 1280 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
| 1281 | |
| 1282 | req->qtcb->bottom.config.feature_selection = |
| 1283 | FSF_FEATURE_CFDC | |
| 1284 | FSF_FEATURE_LUN_SHARING | |
| 1285 | FSF_FEATURE_NOTIFICATION_LOST | |
| 1286 | FSF_FEATURE_UPDATE_ALERT; |
| 1287 | req->erp_action = erp_action; |
| 1288 | req->handler = zfcp_fsf_exchange_config_data_handler; |
| 1289 | erp_action->fsf_req = req; |
| 1290 | |
Christof Schmitt | 287ac01 | 2008-07-02 10:56:40 +0200 | [diff] [blame] | 1291 | zfcp_fsf_start_erp_timer(req); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1292 | retval = zfcp_fsf_req_send(req); |
| 1293 | if (retval) { |
| 1294 | zfcp_fsf_req_free(req); |
| 1295 | erp_action->fsf_req = NULL; |
| 1296 | } |
| 1297 | out: |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1298 | spin_unlock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1299 | return retval; |
| 1300 | } |
| 1301 | |
| 1302 | int zfcp_fsf_exchange_config_data_sync(struct zfcp_adapter *adapter, |
| 1303 | struct fsf_qtcb_bottom_config *data) |
| 1304 | { |
| 1305 | volatile struct qdio_buffer_element *sbale; |
| 1306 | struct zfcp_fsf_req *req = NULL; |
| 1307 | int retval = -EIO; |
| 1308 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1309 | spin_lock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1310 | if (zfcp_fsf_req_sbal_get(adapter)) |
| 1311 | goto out; |
| 1312 | |
| 1313 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_CONFIG_DATA, |
| 1314 | 0, NULL); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 1315 | if (IS_ERR(req)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1316 | retval = PTR_ERR(req); |
| 1317 | goto out; |
| 1318 | } |
| 1319 | |
| 1320 | sbale = zfcp_qdio_sbale_req(req); |
| 1321 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
| 1322 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
| 1323 | req->handler = zfcp_fsf_exchange_config_data_handler; |
| 1324 | |
| 1325 | req->qtcb->bottom.config.feature_selection = |
| 1326 | FSF_FEATURE_CFDC | |
| 1327 | FSF_FEATURE_LUN_SHARING | |
| 1328 | FSF_FEATURE_NOTIFICATION_LOST | |
| 1329 | FSF_FEATURE_UPDATE_ALERT; |
| 1330 | |
| 1331 | if (data) |
| 1332 | req->data = data; |
| 1333 | |
| 1334 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
| 1335 | retval = zfcp_fsf_req_send(req); |
| 1336 | out: |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1337 | spin_unlock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1338 | if (!retval) |
| 1339 | wait_event(req->completion_wq, |
| 1340 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); |
| 1341 | |
| 1342 | zfcp_fsf_req_free(req); |
| 1343 | |
| 1344 | return retval; |
| 1345 | } |
| 1346 | |
| 1347 | /** |
| 1348 | * zfcp_fsf_exchange_port_data - request information about local port |
| 1349 | * @erp_action: ERP action for the adapter for which port data is requested |
| 1350 | * Returns: 0 on success, error otherwise |
| 1351 | */ |
| 1352 | int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action) |
| 1353 | { |
| 1354 | volatile struct qdio_buffer_element *sbale; |
| 1355 | struct zfcp_fsf_req *req; |
| 1356 | struct zfcp_adapter *adapter = erp_action->adapter; |
| 1357 | int retval = -EIO; |
| 1358 | |
| 1359 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
| 1360 | return -EOPNOTSUPP; |
| 1361 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1362 | spin_lock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1363 | if (!atomic_read(&adapter->req_q.count)) |
| 1364 | goto out; |
| 1365 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, |
| 1366 | ZFCP_REQ_AUTO_CLEANUP, |
| 1367 | adapter->pool.fsf_req_erp); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 1368 | if (IS_ERR(req)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1369 | retval = PTR_ERR(req); |
| 1370 | goto out; |
| 1371 | } |
| 1372 | |
| 1373 | sbale = zfcp_qdio_sbale_req(req); |
| 1374 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
| 1375 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
| 1376 | |
| 1377 | req->handler = zfcp_fsf_exchange_port_data_handler; |
| 1378 | req->erp_action = erp_action; |
| 1379 | erp_action->fsf_req = req; |
| 1380 | |
Christof Schmitt | 287ac01 | 2008-07-02 10:56:40 +0200 | [diff] [blame] | 1381 | zfcp_fsf_start_erp_timer(req); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1382 | retval = zfcp_fsf_req_send(req); |
| 1383 | if (retval) { |
| 1384 | zfcp_fsf_req_free(req); |
| 1385 | erp_action->fsf_req = NULL; |
| 1386 | } |
| 1387 | out: |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1388 | spin_unlock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1389 | return retval; |
| 1390 | } |
| 1391 | |
| 1392 | /** |
| 1393 | * zfcp_fsf_exchange_port_data_sync - request information about local port |
| 1394 | * @adapter: pointer to struct zfcp_adapter |
| 1395 | * @data: pointer to struct fsf_qtcb_bottom_port |
| 1396 | * Returns: 0 on success, error otherwise |
| 1397 | */ |
| 1398 | int zfcp_fsf_exchange_port_data_sync(struct zfcp_adapter *adapter, |
| 1399 | struct fsf_qtcb_bottom_port *data) |
| 1400 | { |
| 1401 | volatile struct qdio_buffer_element *sbale; |
| 1402 | struct zfcp_fsf_req *req = NULL; |
| 1403 | int retval = -EIO; |
| 1404 | |
| 1405 | if (!(adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT)) |
| 1406 | return -EOPNOTSUPP; |
| 1407 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1408 | spin_lock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1409 | if (!atomic_read(&adapter->req_q.count)) |
| 1410 | goto out; |
| 1411 | |
| 1412 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_EXCHANGE_PORT_DATA, 0, |
| 1413 | NULL); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 1414 | if (IS_ERR(req)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1415 | retval = PTR_ERR(req); |
| 1416 | goto out; |
| 1417 | } |
| 1418 | |
| 1419 | if (data) |
| 1420 | req->data = data; |
| 1421 | |
| 1422 | sbale = zfcp_qdio_sbale_req(req); |
| 1423 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
| 1424 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
| 1425 | |
| 1426 | req->handler = zfcp_fsf_exchange_port_data_handler; |
| 1427 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
| 1428 | retval = zfcp_fsf_req_send(req); |
| 1429 | out: |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1430 | spin_unlock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1431 | if (!retval) |
| 1432 | wait_event(req->completion_wq, |
| 1433 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); |
| 1434 | zfcp_fsf_req_free(req); |
| 1435 | |
| 1436 | return retval; |
| 1437 | } |
| 1438 | |
| 1439 | static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req) |
| 1440 | { |
| 1441 | struct zfcp_port *port = req->data; |
| 1442 | struct fsf_qtcb_header *header = &req->qtcb->header; |
| 1443 | struct fsf_plogi *plogi; |
| 1444 | |
| 1445 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
| 1446 | goto skip_fsfstatus; |
| 1447 | |
| 1448 | switch (header->fsf_status) { |
| 1449 | case FSF_PORT_ALREADY_OPEN: |
| 1450 | break; |
| 1451 | case FSF_ACCESS_DENIED: |
| 1452 | zfcp_fsf_access_denied_port(req, port); |
| 1453 | break; |
| 1454 | case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED: |
| 1455 | dev_warn(&req->adapter->ccw_device->dev, |
| 1456 | "The adapter is out of resources. The remote port " |
| 1457 | "0x%016Lx could not be opened, disabling it.\n", |
| 1458 | port->wwpn); |
| 1459 | zfcp_erp_port_failed(port, 31, req); |
| 1460 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 1461 | break; |
| 1462 | case FSF_ADAPTER_STATUS_AVAILABLE: |
| 1463 | switch (header->fsf_status_qual.word[0]) { |
| 1464 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
| 1465 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
| 1466 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 1467 | break; |
| 1468 | case FSF_SQ_NO_RETRY_POSSIBLE: |
| 1469 | dev_warn(&req->adapter->ccw_device->dev, |
| 1470 | "The remote port 0x%016Lx could not be " |
| 1471 | "opened. Disabling it.\n", port->wwpn); |
| 1472 | zfcp_erp_port_failed(port, 32, req); |
| 1473 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 1474 | break; |
| 1475 | } |
| 1476 | break; |
| 1477 | case FSF_GOOD: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | port->handle = header->port_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN | |
| 1480 | ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); |
Andreas Herrmann | d736a27b | 2005-06-13 13:23:57 +0200 | [diff] [blame] | 1481 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
| 1482 | ZFCP_STATUS_COMMON_ACCESS_BOXED, |
| 1483 | &port->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | /* check whether D_ID has changed during open */ |
| 1485 | /* |
| 1486 | * FIXME: This check is not airtight, as the FCP channel does |
| 1487 | * not monitor closures of target port connections caused on |
| 1488 | * the remote side. Thus, they might miss out on invalidating |
| 1489 | * locally cached WWPNs (and other N_Port parameters) of gone |
| 1490 | * target ports. So, our heroic attempt to make things safe |
| 1491 | * could be undermined by 'open port' response data tagged with |
| 1492 | * obsolete WWPNs. Another reason to monitor potential |
| 1493 | * connection closures ourself at least (by interpreting |
| 1494 | * incoming ELS' and unsolicited status). It just crosses my |
| 1495 | * mind that one should be able to cross-check by means of |
| 1496 | * another GID_PN straight after a port has been opened. |
| 1497 | * Alternately, an ADISC/PDISC ELS should suffice, as well. |
| 1498 | */ |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1499 | if (atomic_read(&port->status) & ZFCP_STATUS_PORT_NO_WWPN) |
| 1500 | break; |
| 1501 | |
| 1502 | plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els; |
| 1503 | if (req->qtcb->bottom.support.els1_length >= sizeof(*plogi)) { |
| 1504 | if (plogi->serv_param.wwpn != port->wwpn) |
| 1505 | atomic_clear_mask(ZFCP_STATUS_PORT_DID_DID, |
| 1506 | &port->status); |
| 1507 | else { |
| 1508 | port->wwnn = plogi->serv_param.wwnn; |
| 1509 | zfcp_fc_plogi_evaluate(port, plogi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1510 | } |
| 1511 | } |
| 1512 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1513 | case FSF_UNKNOWN_OP_SUBTYPE: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1514 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | break; |
| 1516 | } |
| 1517 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1518 | skip_fsfstatus: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1519 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &port->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | } |
| 1521 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1522 | /** |
| 1523 | * zfcp_fsf_open_port - create and send open port request |
| 1524 | * @erp_action: pointer to struct zfcp_erp_action |
| 1525 | * Returns: 0 on success, error otherwise |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1526 | */ |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1527 | int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | { |
| 1529 | volatile struct qdio_buffer_element *sbale; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1530 | struct zfcp_adapter *adapter = erp_action->adapter; |
| 1531 | struct zfcp_fsf_req *req; |
| 1532 | int retval = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1533 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1534 | spin_lock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1535 | if (zfcp_fsf_req_sbal_get(adapter)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1537 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1538 | req = zfcp_fsf_req_create(adapter, |
| 1539 | FSF_QTCB_OPEN_PORT_WITH_DID, |
| 1540 | ZFCP_REQ_AUTO_CLEANUP, |
| 1541 | adapter->pool.fsf_req_erp); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 1542 | if (IS_ERR(req)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1543 | retval = PTR_ERR(req); |
| 1544 | goto out; |
| 1545 | } |
| 1546 | |
| 1547 | sbale = zfcp_qdio_sbale_req(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
| 1549 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
| 1550 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1551 | req->handler = zfcp_fsf_open_port_handler; |
| 1552 | req->qtcb->bottom.support.d_id = erp_action->port->d_id; |
| 1553 | req->data = erp_action->port; |
| 1554 | req->erp_action = erp_action; |
| 1555 | erp_action->fsf_req = req; |
| 1556 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->port->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | |
Christof Schmitt | 287ac01 | 2008-07-02 10:56:40 +0200 | [diff] [blame] | 1558 | zfcp_fsf_start_erp_timer(req); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1559 | retval = zfcp_fsf_req_send(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | if (retval) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1561 | zfcp_fsf_req_free(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | erp_action->fsf_req = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | } |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1564 | out: |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1565 | spin_unlock_bh(&adapter->req_q.lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1566 | return retval; |
| 1567 | } |
| 1568 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1569 | static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1570 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1571 | struct zfcp_port *port = req->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1573 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1574 | goto skip_fsfstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1576 | switch (req->qtcb->header.fsf_status) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | case FSF_PORT_HANDLE_NOT_VALID: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1578 | zfcp_erp_adapter_reopen(port->adapter, 0, 107, req); |
| 1579 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1581 | case FSF_ADAPTER_STATUS_AVAILABLE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1582 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1583 | case FSF_GOOD: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1584 | zfcp_erp_modify_port_status(port, 33, req, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | ZFCP_STATUS_COMMON_OPEN, |
| 1586 | ZFCP_CLEAR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1588 | } |
| 1589 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1590 | skip_fsfstatus: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &port->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1592 | } |
| 1593 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1594 | /** |
| 1595 | * zfcp_fsf_close_port - create and send close port request |
| 1596 | * @erp_action: pointer to struct zfcp_erp_action |
| 1597 | * Returns: 0 on success, error otherwise |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | */ |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1599 | int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1600 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | volatile struct qdio_buffer_element *sbale; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1602 | struct zfcp_adapter *adapter = erp_action->adapter; |
| 1603 | struct zfcp_fsf_req *req; |
| 1604 | int retval = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1605 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1606 | spin_lock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1607 | if (zfcp_fsf_req_sbal_get(adapter)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1610 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PORT, |
| 1611 | ZFCP_REQ_AUTO_CLEANUP, |
| 1612 | adapter->pool.fsf_req_erp); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 1613 | if (IS_ERR(req)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1614 | retval = PTR_ERR(req); |
| 1615 | goto out; |
| 1616 | } |
| 1617 | |
| 1618 | sbale = zfcp_qdio_sbale_req(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1619 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
| 1620 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
| 1621 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1622 | req->handler = zfcp_fsf_close_port_handler; |
| 1623 | req->data = erp_action->port; |
| 1624 | req->erp_action = erp_action; |
| 1625 | req->qtcb->header.port_handle = erp_action->port->handle; |
| 1626 | erp_action->fsf_req = req; |
| 1627 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->port->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1628 | |
Christof Schmitt | 287ac01 | 2008-07-02 10:56:40 +0200 | [diff] [blame] | 1629 | zfcp_fsf_start_erp_timer(req); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1630 | retval = zfcp_fsf_req_send(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | if (retval) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1632 | zfcp_fsf_req_free(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1633 | erp_action->fsf_req = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1634 | } |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1635 | out: |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1636 | spin_unlock_bh(&adapter->req_q.lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | return retval; |
| 1638 | } |
| 1639 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1640 | static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1641 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1642 | struct zfcp_port *port = req->data; |
| 1643 | struct fsf_qtcb_header *header = &req->qtcb->header; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1644 | struct zfcp_unit *unit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1646 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | goto skip_fsfstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1648 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1649 | switch (header->fsf_status) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1650 | case FSF_PORT_HANDLE_NOT_VALID: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1651 | zfcp_erp_adapter_reopen(port->adapter, 0, 108, req); |
| 1652 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1653 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1654 | case FSF_ACCESS_DENIED: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1655 | zfcp_fsf_access_denied_port(req, port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1656 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | case FSF_PORT_BOXED: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1658 | zfcp_erp_port_boxed(port, 50, req); |
| 1659 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
| 1660 | ZFCP_STATUS_FSFREQ_RETRY; |
Christof Schmitt | 5c815d1 | 2008-03-10 16:18:54 +0100 | [diff] [blame] | 1661 | /* can't use generic zfcp_erp_modify_port_status because |
| 1662 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */ |
| 1663 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); |
| 1664 | list_for_each_entry(unit, &port->unit_list_head, list) |
| 1665 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
| 1666 | &unit->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1668 | case FSF_ADAPTER_STATUS_AVAILABLE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1669 | switch (header->fsf_status_qual.word[0]) { |
| 1670 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1671 | /* fall through */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1673 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1674 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1675 | } |
| 1676 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1677 | case FSF_GOOD: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1678 | /* can't use generic zfcp_erp_modify_port_status because |
| 1679 | * ZFCP_STATUS_COMMON_OPEN must not be reset for the port |
| 1680 | */ |
| 1681 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status); |
| 1682 | list_for_each_entry(unit, &port->unit_list_head, list) |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1683 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, |
| 1684 | &unit->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1685 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1686 | } |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1687 | skip_fsfstatus: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1688 | atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, &port->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1689 | } |
| 1690 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1691 | /** |
| 1692 | * zfcp_fsf_close_physical_port - close physical port |
| 1693 | * @erp_action: pointer to struct zfcp_erp_action |
| 1694 | * Returns: 0 on success |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | */ |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1696 | int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1697 | { |
| 1698 | volatile struct qdio_buffer_element *sbale; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1699 | struct zfcp_adapter *adapter = erp_action->adapter; |
| 1700 | struct zfcp_fsf_req *req; |
| 1701 | int retval = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1702 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1703 | spin_lock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1704 | if (zfcp_fsf_req_sbal_get(adapter)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1706 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1707 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_PHYSICAL_PORT, |
| 1708 | ZFCP_REQ_AUTO_CLEANUP, |
| 1709 | adapter->pool.fsf_req_erp); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 1710 | if (IS_ERR(req)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1711 | retval = PTR_ERR(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | goto out; |
| 1713 | } |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1714 | |
| 1715 | sbale = zfcp_qdio_sbale_req(req); |
| 1716 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
| 1717 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
| 1718 | |
| 1719 | req->data = erp_action->port; |
| 1720 | req->qtcb->header.port_handle = erp_action->port->handle; |
| 1721 | req->erp_action = erp_action; |
| 1722 | req->handler = zfcp_fsf_close_physical_port_handler; |
| 1723 | erp_action->fsf_req = req; |
| 1724 | atomic_set_mask(ZFCP_STATUS_PORT_PHYS_CLOSING, |
| 1725 | &erp_action->port->status); |
| 1726 | |
Christof Schmitt | 287ac01 | 2008-07-02 10:56:40 +0200 | [diff] [blame] | 1727 | zfcp_fsf_start_erp_timer(req); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1728 | retval = zfcp_fsf_req_send(req); |
| 1729 | if (retval) { |
| 1730 | zfcp_fsf_req_free(req); |
| 1731 | erp_action->fsf_req = NULL; |
| 1732 | } |
| 1733 | out: |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1734 | spin_unlock_bh(&adapter->req_q.lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | return retval; |
| 1736 | } |
| 1737 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1738 | static void zfcp_fsf_open_unit_handler(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1740 | struct zfcp_adapter *adapter = req->adapter; |
| 1741 | struct zfcp_unit *unit = req->data; |
| 1742 | struct fsf_qtcb_header *header = &req->qtcb->header; |
| 1743 | struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support; |
| 1744 | struct fsf_queue_designator *queue_designator = |
| 1745 | &header->fsf_status_qual.fsf_queue_designator; |
Maxim Shchetynin | aef4a98 | 2005-09-13 21:51:16 +0200 | [diff] [blame] | 1746 | int exclusive, readwrite; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1748 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1749 | goto skip_fsfstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED | |
Heiko Carstens | b64ddf9 | 2007-05-08 11:19:57 +0200 | [diff] [blame] | 1752 | ZFCP_STATUS_COMMON_ACCESS_BOXED | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1753 | ZFCP_STATUS_UNIT_SHARED | |
| 1754 | ZFCP_STATUS_UNIT_READONLY, |
| 1755 | &unit->status); |
| 1756 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | switch (header->fsf_status) { |
| 1758 | |
| 1759 | case FSF_PORT_HANDLE_NOT_VALID: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1760 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 109, req); |
| 1761 | /* fall through */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1762 | case FSF_LUN_ALREADY_OPEN: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1763 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | case FSF_ACCESS_DENIED: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1765 | zfcp_fsf_access_denied_unit(req, unit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1766 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 1767 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | case FSF_PORT_BOXED: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1770 | zfcp_erp_port_boxed(unit->port, 51, req); |
| 1771 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
| 1772 | ZFCP_STATUS_FSFREQ_RETRY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1773 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1774 | case FSF_LUN_SHARING_VIOLATION: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1775 | if (header->fsf_status_qual.word[0]) |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 1776 | dev_warn(&adapter->ccw_device->dev, |
| 1777 | "FCP-LUN 0x%Lx at the remote port " |
| 1778 | "with WWPN 0x%Lx " |
| 1779 | "connected to the adapter " |
| 1780 | "is already in use in LPAR%d, CSS%d.\n", |
| 1781 | unit->fcp_lun, |
| 1782 | unit->port->wwpn, |
| 1783 | queue_designator->hla, |
| 1784 | queue_designator->cssid); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1785 | else |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 1786 | zfcp_act_eval_err(adapter, |
| 1787 | header->fsf_status_qual.word[2]); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1788 | zfcp_erp_unit_access_denied(unit, 60, req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1789 | atomic_clear_mask(ZFCP_STATUS_UNIT_SHARED, &unit->status); |
| 1790 | atomic_clear_mask(ZFCP_STATUS_UNIT_READONLY, &unit->status); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1791 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1792 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1793 | case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1794 | dev_warn(&adapter->ccw_device->dev, |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 1795 | "The adapter ran out of resources. There is no " |
| 1796 | "handle available for unit 0x%016Lx on port 0x%016Lx.", |
| 1797 | unit->fcp_lun, unit->port->wwpn); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1798 | zfcp_erp_unit_failed(unit, 34, req); |
| 1799 | /* fall through */ |
| 1800 | case FSF_INVALID_COMMAND_OPTION: |
| 1801 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1802 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1803 | case FSF_ADAPTER_STATUS_AVAILABLE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1804 | switch (header->fsf_status_qual.word[0]) { |
| 1805 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
Andreas Herrmann | 65a8d4e | 2005-06-13 13:16:27 +0200 | [diff] [blame] | 1806 | zfcp_test_link(unit->port); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1807 | /* fall through */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1808 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1809 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1810 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | } |
| 1812 | break; |
| 1813 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1814 | case FSF_GOOD: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1815 | unit->handle = header->lun_handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1816 | atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
Maxim Shchetynin | aef4a98 | 2005-09-13 21:51:16 +0200 | [diff] [blame] | 1817 | |
| 1818 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) && |
| 1819 | (adapter->adapter_features & FSF_FEATURE_LUN_SHARING) && |
| 1820 | (adapter->ccw_device->id.dev_model != ZFCP_DEVICE_MODEL_PRIV)) { |
| 1821 | exclusive = (bottom->lun_access_info & |
| 1822 | FSF_UNIT_ACCESS_EXCLUSIVE); |
| 1823 | readwrite = (bottom->lun_access_info & |
| 1824 | FSF_UNIT_ACCESS_OUTBOUND_TRANSFER); |
| 1825 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | if (!exclusive) |
| 1827 | atomic_set_mask(ZFCP_STATUS_UNIT_SHARED, |
| 1828 | &unit->status); |
| 1829 | |
| 1830 | if (!readwrite) { |
| 1831 | atomic_set_mask(ZFCP_STATUS_UNIT_READONLY, |
| 1832 | &unit->status); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1833 | dev_info(&adapter->ccw_device->dev, |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 1834 | "Read-only access for unit 0x%016Lx " |
| 1835 | "on port 0x%016Lx.\n", |
| 1836 | unit->fcp_lun, unit->port->wwpn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1837 | } |
| 1838 | |
| 1839 | if (exclusive && !readwrite) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1840 | dev_err(&adapter->ccw_device->dev, |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 1841 | "Exclusive access of read-only unit " |
| 1842 | "0x%016Lx on port 0x%016Lx not " |
| 1843 | "supported, disabling unit.\n", |
| 1844 | unit->fcp_lun, unit->port->wwpn); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1845 | zfcp_erp_unit_failed(unit, 35, req); |
| 1846 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 1847 | zfcp_erp_unit_shutdown(unit, 0, 80, req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1848 | } else if (!exclusive && readwrite) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1849 | dev_err(&adapter->ccw_device->dev, |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 1850 | "Shared access of read-write unit " |
| 1851 | "0x%016Lx on port 0x%016Lx not " |
| 1852 | "supported, disabling unit.\n", |
| 1853 | unit->fcp_lun, unit->port->wwpn); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1854 | zfcp_erp_unit_failed(unit, 36, req); |
| 1855 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 1856 | zfcp_erp_unit_shutdown(unit, 0, 81, req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | } |
| 1858 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1859 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | } |
| 1861 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1862 | skip_fsfstatus: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1863 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPENING, &unit->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1864 | } |
| 1865 | |
| 1866 | /** |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1867 | * zfcp_fsf_open_unit - open unit |
| 1868 | * @erp_action: pointer to struct zfcp_erp_action |
| 1869 | * Returns: 0 on success, error otherwise |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1870 | */ |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1871 | int zfcp_fsf_open_unit(struct zfcp_erp_action *erp_action) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1872 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1873 | volatile struct qdio_buffer_element *sbale; |
| 1874 | struct zfcp_adapter *adapter = erp_action->adapter; |
| 1875 | struct zfcp_fsf_req *req; |
| 1876 | int retval = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1877 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1878 | spin_lock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1879 | if (zfcp_fsf_req_sbal_get(adapter)) |
| 1880 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1882 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_OPEN_LUN, |
| 1883 | ZFCP_REQ_AUTO_CLEANUP, |
| 1884 | adapter->pool.fsf_req_erp); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 1885 | if (IS_ERR(req)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1886 | retval = PTR_ERR(req); |
| 1887 | goto out; |
Christof Schmitt | ba17242 | 2007-12-20 12:30:26 +0100 | [diff] [blame] | 1888 | } |
| 1889 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1890 | sbale = zfcp_qdio_sbale_req(req); |
| 1891 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
| 1892 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1893 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1894 | req->qtcb->header.port_handle = erp_action->port->handle; |
| 1895 | req->qtcb->bottom.support.fcp_lun = erp_action->unit->fcp_lun; |
| 1896 | req->handler = zfcp_fsf_open_unit_handler; |
| 1897 | req->data = erp_action->unit; |
| 1898 | req->erp_action = erp_action; |
| 1899 | erp_action->fsf_req = req; |
Andreas Herrmann | 059c97d | 2005-09-13 21:47:52 +0200 | [diff] [blame] | 1900 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1901 | if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) |
| 1902 | req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1903 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1904 | atomic_set_mask(ZFCP_STATUS_COMMON_OPENING, &erp_action->unit->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1905 | |
Christof Schmitt | 287ac01 | 2008-07-02 10:56:40 +0200 | [diff] [blame] | 1906 | zfcp_fsf_start_erp_timer(req); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1907 | retval = zfcp_fsf_req_send(req); |
| 1908 | if (retval) { |
| 1909 | zfcp_fsf_req_free(req); |
| 1910 | erp_action->fsf_req = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | } |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1912 | out: |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1913 | spin_unlock_bh(&adapter->req_q.lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1914 | return retval; |
| 1915 | } |
| 1916 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1917 | static void zfcp_fsf_close_unit_handler(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1918 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1919 | struct zfcp_unit *unit = req->data; |
| 1920 | |
| 1921 | if (req->status & ZFCP_STATUS_FSFREQ_ERROR) |
| 1922 | goto skip_fsfstatus; |
| 1923 | |
| 1924 | switch (req->qtcb->header.fsf_status) { |
| 1925 | case FSF_PORT_HANDLE_NOT_VALID: |
| 1926 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 110, req); |
| 1927 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 1928 | break; |
| 1929 | case FSF_LUN_HANDLE_NOT_VALID: |
| 1930 | zfcp_erp_port_reopen(unit->port, 0, 111, req); |
| 1931 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 1932 | break; |
| 1933 | case FSF_PORT_BOXED: |
| 1934 | zfcp_erp_port_boxed(unit->port, 52, req); |
| 1935 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
| 1936 | ZFCP_STATUS_FSFREQ_RETRY; |
| 1937 | break; |
| 1938 | case FSF_ADAPTER_STATUS_AVAILABLE: |
| 1939 | switch (req->qtcb->header.fsf_status_qual.word[0]) { |
| 1940 | case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: |
| 1941 | zfcp_test_link(unit->port); |
| 1942 | /* fall through */ |
| 1943 | case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: |
| 1944 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 1945 | break; |
| 1946 | } |
| 1947 | break; |
| 1948 | case FSF_GOOD: |
| 1949 | atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &unit->status); |
| 1950 | break; |
| 1951 | } |
| 1952 | skip_fsfstatus: |
| 1953 | atomic_clear_mask(ZFCP_STATUS_COMMON_CLOSING, &unit->status); |
| 1954 | } |
| 1955 | |
| 1956 | /** |
| 1957 | * zfcp_fsf_close_unit - close zfcp unit |
| 1958 | * @erp_action: pointer to struct zfcp_unit |
| 1959 | * Returns: 0 on success, error otherwise |
| 1960 | */ |
| 1961 | int zfcp_fsf_close_unit(struct zfcp_erp_action *erp_action) |
| 1962 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1963 | volatile struct qdio_buffer_element *sbale; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1964 | struct zfcp_adapter *adapter = erp_action->adapter; |
| 1965 | struct zfcp_fsf_req *req; |
| 1966 | int retval = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1968 | spin_lock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1969 | if (zfcp_fsf_req_sbal_get(adapter)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1970 | goto out; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1971 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_CLOSE_LUN, |
| 1972 | ZFCP_REQ_AUTO_CLEANUP, |
| 1973 | adapter->pool.fsf_req_erp); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 1974 | if (IS_ERR(req)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1975 | retval = PTR_ERR(req); |
| 1976 | goto out; |
| 1977 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1978 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1979 | sbale = zfcp_qdio_sbale_req(req); |
| 1980 | sbale[0].flags |= SBAL_FLAGS0_TYPE_READ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1981 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
| 1982 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1983 | req->qtcb->header.port_handle = erp_action->port->handle; |
| 1984 | req->qtcb->header.lun_handle = erp_action->unit->handle; |
| 1985 | req->handler = zfcp_fsf_close_unit_handler; |
| 1986 | req->data = erp_action->unit; |
| 1987 | req->erp_action = erp_action; |
| 1988 | erp_action->fsf_req = req; |
| 1989 | atomic_set_mask(ZFCP_STATUS_COMMON_CLOSING, &erp_action->unit->status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | |
Christof Schmitt | 287ac01 | 2008-07-02 10:56:40 +0200 | [diff] [blame] | 1991 | zfcp_fsf_start_erp_timer(req); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1992 | retval = zfcp_fsf_req_send(req); |
| 1993 | if (retval) { |
| 1994 | zfcp_fsf_req_free(req); |
| 1995 | erp_action->fsf_req = NULL; |
| 1996 | } |
| 1997 | out: |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 1998 | spin_unlock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 1999 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2000 | } |
| 2001 | |
Christof Schmitt | c961585 | 2008-05-06 11:00:05 +0200 | [diff] [blame] | 2002 | static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat) |
| 2003 | { |
| 2004 | lat_rec->sum += lat; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2005 | lat_rec->min = min(lat_rec->min, lat); |
| 2006 | lat_rec->max = max(lat_rec->max, lat); |
Christof Schmitt | c961585 | 2008-05-06 11:00:05 +0200 | [diff] [blame] | 2007 | } |
| 2008 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2009 | static void zfcp_fsf_req_latency(struct zfcp_fsf_req *req) |
Christof Schmitt | c961585 | 2008-05-06 11:00:05 +0200 | [diff] [blame] | 2010 | { |
| 2011 | struct fsf_qual_latency_info *lat_inf; |
| 2012 | struct latency_cont *lat; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2013 | struct zfcp_unit *unit = req->unit; |
Christof Schmitt | c961585 | 2008-05-06 11:00:05 +0200 | [diff] [blame] | 2014 | unsigned long flags; |
| 2015 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2016 | lat_inf = &req->qtcb->prefix.prot_status_qual.latency_info; |
Christof Schmitt | c961585 | 2008-05-06 11:00:05 +0200 | [diff] [blame] | 2017 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2018 | switch (req->qtcb->bottom.io.data_direction) { |
Christof Schmitt | c961585 | 2008-05-06 11:00:05 +0200 | [diff] [blame] | 2019 | case FSF_DATADIR_READ: |
| 2020 | lat = &unit->latencies.read; |
| 2021 | break; |
| 2022 | case FSF_DATADIR_WRITE: |
| 2023 | lat = &unit->latencies.write; |
| 2024 | break; |
| 2025 | case FSF_DATADIR_CMND: |
| 2026 | lat = &unit->latencies.cmd; |
| 2027 | break; |
| 2028 | default: |
| 2029 | return; |
| 2030 | } |
| 2031 | |
| 2032 | spin_lock_irqsave(&unit->latencies.lock, flags); |
| 2033 | zfcp_fsf_update_lat(&lat->channel, lat_inf->channel_lat); |
| 2034 | zfcp_fsf_update_lat(&lat->fabric, lat_inf->fabric_lat); |
| 2035 | lat->counter++; |
| 2036 | spin_unlock_irqrestore(&unit->latencies.lock, flags); |
| 2037 | } |
| 2038 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2039 | static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2041 | struct scsi_cmnd *scpnt = req->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2043 | &(req->qtcb->bottom.io.fcp_rsp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2044 | u32 sns_len; |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 2045 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2046 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2047 | |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 2048 | if (unlikely(!scpnt)) |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2049 | return; |
Christof Schmitt | 553448f | 2008-06-10 18:20:58 +0200 | [diff] [blame] | 2050 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2051 | read_lock_irqsave(&req->adapter->abort_lock, flags); |
| 2052 | |
| 2053 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ABORTED)) { |
Martin Petermann | feac6a0 | 2008-07-02 10:56:35 +0200 | [diff] [blame] | 2054 | set_host_byte(scpnt, DID_SOFT_ERROR); |
| 2055 | set_driver_byte(scpnt, SUGGEST_RETRY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2056 | goto skip_fsfstatus; |
| 2057 | } |
| 2058 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2059 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) { |
Martin Petermann | feac6a0 | 2008-07-02 10:56:35 +0200 | [diff] [blame] | 2060 | set_host_byte(scpnt, DID_ERROR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2061 | goto skip_fsfstatus; |
| 2062 | } |
| 2063 | |
Martin Petermann | feac6a0 | 2008-07-02 10:56:35 +0200 | [diff] [blame] | 2064 | set_msg_byte(scpnt, COMMAND_COMPLETE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2065 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2066 | scpnt->result |= fcp_rsp_iu->scsi_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2068 | if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) |
| 2069 | zfcp_fsf_req_latency(req); |
Christof Schmitt | c961585 | 2008-05-06 11:00:05 +0200 | [diff] [blame] | 2070 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2071 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2072 | if (fcp_rsp_info[3] == RSP_CODE_GOOD) |
Martin Petermann | feac6a0 | 2008-07-02 10:56:35 +0200 | [diff] [blame] | 2073 | set_host_byte(scpnt, DID_OK); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2074 | else { |
Martin Petermann | feac6a0 | 2008-07-02 10:56:35 +0200 | [diff] [blame] | 2075 | set_host_byte(scpnt, DID_ERROR); |
| 6f71d9b | 2005-04-10 23:04:28 -0500 | [diff] [blame] | 2076 | goto skip_fsfstatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2077 | } |
| 2078 | } |
| 2079 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2080 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_sns_len_valid)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2081 | sns_len = FSF_FCP_RSP_SIZE - sizeof(struct fcp_rsp_iu) + |
| 2082 | fcp_rsp_iu->fcp_rsp_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2083 | sns_len = min(sns_len, (u32) SCSI_SENSE_BUFFERSIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2084 | sns_len = min(sns_len, fcp_rsp_iu->fcp_sns_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2085 | |
FUJITA Tomonori | 9d058ec | 2008-01-27 12:41:50 +0900 | [diff] [blame] | 2086 | memcpy(scpnt->sense_buffer, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2087 | zfcp_get_fcp_sns_info_ptr(fcp_rsp_iu), sns_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2088 | } |
| 2089 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2090 | if (unlikely(fcp_rsp_iu->validity.bits.fcp_resid_under)) { |
FUJITA Tomonori | 7936a89 | 2007-07-29 16:46:28 +0900 | [diff] [blame] | 2091 | scsi_set_resid(scpnt, fcp_rsp_iu->fcp_resid); |
| 2092 | if (scsi_bufflen(scpnt) - scsi_get_resid(scpnt) < |
| 2093 | scpnt->underflow) |
Martin Petermann | feac6a0 | 2008-07-02 10:56:35 +0200 | [diff] [blame] | 2094 | set_host_byte(scpnt, DID_ERROR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2095 | } |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2096 | skip_fsfstatus: |
Maxim Shchetynin | 8a36e45 | 2005-09-13 21:50:38 +0200 | [diff] [blame] | 2097 | if (scpnt->result != 0) |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2098 | zfcp_scsi_dbf_event_result("erro", 3, req->adapter, scpnt, req); |
Maxim Shchetynin | 8a36e45 | 2005-09-13 21:50:38 +0200 | [diff] [blame] | 2099 | else if (scpnt->retries > 0) |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2100 | zfcp_scsi_dbf_event_result("retr", 4, req->adapter, scpnt, req); |
Maxim Shchetynin | 8a36e45 | 2005-09-13 21:50:38 +0200 | [diff] [blame] | 2101 | else |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2102 | zfcp_scsi_dbf_event_result("norm", 6, req->adapter, scpnt, req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2104 | scpnt->host_scribble = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2105 | (scpnt->scsi_done) (scpnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2106 | /* |
| 2107 | * We must hold this lock until scsi_done has been called. |
| 2108 | * Otherwise we may call scsi_done after abort regarding this |
| 2109 | * command has completed. |
| 2110 | * Note: scsi_done must not block! |
| 2111 | */ |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2112 | read_unlock_irqrestore(&req->adapter->abort_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2113 | } |
| 2114 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2115 | static void zfcp_fsf_send_fcp_ctm_handler(struct zfcp_fsf_req *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2116 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2117 | struct fcp_rsp_iu *fcp_rsp_iu = (struct fcp_rsp_iu *) |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2118 | &(req->qtcb->bottom.io.fcp_rsp); |
Martin Petermann | f76af7d7 | 2008-07-02 10:56:36 +0200 | [diff] [blame] | 2119 | char *fcp_rsp_info = (unsigned char *) &fcp_rsp_iu[1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2120 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2121 | if ((fcp_rsp_info[3] != RSP_CODE_GOOD) || |
| 2122 | (req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
| 2123 | req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2124 | } |
| 2125 | |
| 2126 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2127 | static void zfcp_fsf_send_fcp_command_handler(struct zfcp_fsf_req *req) |
| 2128 | { |
| 2129 | struct zfcp_unit *unit; |
| 2130 | struct fsf_qtcb_header *header = &req->qtcb->header; |
| 2131 | |
| 2132 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT)) |
| 2133 | unit = req->data; |
| 2134 | else |
| 2135 | unit = req->unit; |
| 2136 | |
| 2137 | if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) |
| 2138 | goto skip_fsfstatus; |
| 2139 | |
| 2140 | switch (header->fsf_status) { |
| 2141 | case FSF_HANDLE_MISMATCH: |
| 2142 | case FSF_PORT_HANDLE_NOT_VALID: |
| 2143 | zfcp_erp_adapter_reopen(unit->port->adapter, 0, 112, req); |
| 2144 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 2145 | break; |
| 2146 | case FSF_FCPLUN_NOT_VALID: |
| 2147 | case FSF_LUN_HANDLE_NOT_VALID: |
| 2148 | zfcp_erp_port_reopen(unit->port, 0, 113, req); |
| 2149 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 2150 | break; |
| 2151 | case FSF_SERVICE_CLASS_NOT_SUPPORTED: |
| 2152 | zfcp_fsf_class_not_supp(req); |
| 2153 | break; |
| 2154 | case FSF_ACCESS_DENIED: |
| 2155 | zfcp_fsf_access_denied_unit(req, unit); |
| 2156 | break; |
| 2157 | case FSF_DIRECTION_INDICATOR_NOT_VALID: |
| 2158 | dev_err(&req->adapter->ccw_device->dev, |
| 2159 | "Invalid data direction (%d) given for unit " |
| 2160 | "0x%016Lx on port 0x%016Lx, shutting down " |
| 2161 | "adapter.\n", |
| 2162 | req->qtcb->bottom.io.data_direction, |
| 2163 | unit->fcp_lun, unit->port->wwpn); |
| 2164 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 133, req); |
| 2165 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 2166 | break; |
| 2167 | case FSF_CMND_LENGTH_NOT_VALID: |
| 2168 | dev_err(&req->adapter->ccw_device->dev, |
| 2169 | "An invalid control-data-block length field (%d) " |
| 2170 | "was found in a command for unit 0x%016Lx on port " |
| 2171 | "0x%016Lx. Shutting down adapter.\n", |
| 2172 | req->qtcb->bottom.io.fcp_cmnd_length, |
| 2173 | unit->fcp_lun, unit->port->wwpn); |
| 2174 | zfcp_erp_adapter_shutdown(unit->port->adapter, 0, 134, req); |
| 2175 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 2176 | break; |
| 2177 | case FSF_PORT_BOXED: |
| 2178 | zfcp_erp_port_boxed(unit->port, 53, req); |
| 2179 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
| 2180 | ZFCP_STATUS_FSFREQ_RETRY; |
| 2181 | break; |
| 2182 | case FSF_LUN_BOXED: |
| 2183 | zfcp_erp_unit_boxed(unit, 54, req); |
| 2184 | req->status |= ZFCP_STATUS_FSFREQ_ERROR | |
| 2185 | ZFCP_STATUS_FSFREQ_RETRY; |
| 2186 | break; |
| 2187 | case FSF_ADAPTER_STATUS_AVAILABLE: |
| 2188 | if (header->fsf_status_qual.word[0] == |
| 2189 | FSF_SQ_INVOKE_LINK_TEST_PROCEDURE) |
| 2190 | zfcp_test_link(unit->port); |
| 2191 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 2192 | break; |
| 2193 | } |
| 2194 | skip_fsfstatus: |
| 2195 | if (req->status & ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT) |
| 2196 | zfcp_fsf_send_fcp_ctm_handler(req); |
| 2197 | else { |
| 2198 | zfcp_fsf_send_fcp_command_task_handler(req); |
| 2199 | req->unit = NULL; |
| 2200 | zfcp_unit_put(unit); |
| 2201 | } |
| 2202 | } |
| 2203 | |
| 2204 | /** |
| 2205 | * zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command) |
| 2206 | * @adapter: adapter where scsi command is issued |
| 2207 | * @unit: unit where command is sent to |
| 2208 | * @scsi_cmnd: scsi command to be sent |
| 2209 | * @timer: timer to be started when request is initiated |
| 2210 | * @req_flags: flags for fsf_request |
| 2211 | */ |
| 2212 | int zfcp_fsf_send_fcp_command_task(struct zfcp_adapter *adapter, |
| 2213 | struct zfcp_unit *unit, |
| 2214 | struct scsi_cmnd *scsi_cmnd, |
| 2215 | int use_timer, int req_flags) |
| 2216 | { |
| 2217 | struct zfcp_fsf_req *req; |
| 2218 | struct fcp_cmnd_iu *fcp_cmnd_iu; |
| 2219 | unsigned int sbtype; |
| 2220 | int real_bytes, retval = -EIO; |
| 2221 | |
| 2222 | if (unlikely(!(atomic_read(&unit->status) & |
| 2223 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
| 2224 | return -EBUSY; |
| 2225 | |
| 2226 | spin_lock(&adapter->req_q.lock); |
| 2227 | if (!atomic_read(&adapter->req_q.count)) |
| 2228 | goto out; |
| 2229 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, |
| 2230 | adapter->pool.fsf_req_scsi); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 2231 | if (IS_ERR(req)) { |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2232 | retval = PTR_ERR(req); |
| 2233 | goto out; |
| 2234 | } |
| 2235 | |
| 2236 | zfcp_unit_get(unit); |
| 2237 | req->unit = unit; |
| 2238 | req->data = scsi_cmnd; |
| 2239 | req->handler = zfcp_fsf_send_fcp_command_handler; |
| 2240 | req->qtcb->header.lun_handle = unit->handle; |
| 2241 | req->qtcb->header.port_handle = unit->port->handle; |
| 2242 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; |
| 2243 | |
| 2244 | scsi_cmnd->host_scribble = (unsigned char *) req->req_id; |
| 2245 | |
| 2246 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &(req->qtcb->bottom.io.fcp_cmnd); |
| 2247 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; |
| 2248 | /* |
| 2249 | * set depending on data direction: |
| 2250 | * data direction bits in SBALE (SB Type) |
| 2251 | * data direction bits in QTCB |
| 2252 | * data direction bits in FCP_CMND IU |
| 2253 | */ |
| 2254 | switch (scsi_cmnd->sc_data_direction) { |
| 2255 | case DMA_NONE: |
| 2256 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; |
| 2257 | sbtype = SBAL_FLAGS0_TYPE_READ; |
| 2258 | break; |
| 2259 | case DMA_FROM_DEVICE: |
| 2260 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ; |
| 2261 | sbtype = SBAL_FLAGS0_TYPE_READ; |
| 2262 | fcp_cmnd_iu->rddata = 1; |
| 2263 | break; |
| 2264 | case DMA_TO_DEVICE: |
| 2265 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE; |
| 2266 | sbtype = SBAL_FLAGS0_TYPE_WRITE; |
| 2267 | fcp_cmnd_iu->wddata = 1; |
| 2268 | break; |
| 2269 | case DMA_BIDIRECTIONAL: |
| 2270 | default: |
| 2271 | retval = -EIO; |
| 2272 | goto failed_scsi_cmnd; |
| 2273 | } |
| 2274 | |
| 2275 | if (likely((scsi_cmnd->device->simple_tags) || |
| 2276 | ((atomic_read(&unit->status) & ZFCP_STATUS_UNIT_READONLY) && |
| 2277 | (atomic_read(&unit->status) & ZFCP_STATUS_UNIT_SHARED)))) |
| 2278 | fcp_cmnd_iu->task_attribute = SIMPLE_Q; |
| 2279 | else |
| 2280 | fcp_cmnd_iu->task_attribute = UNTAGGED; |
| 2281 | |
| 2282 | if (unlikely(scsi_cmnd->cmd_len > FCP_CDB_LENGTH)) |
| 2283 | fcp_cmnd_iu->add_fcp_cdb_length = |
| 2284 | (scsi_cmnd->cmd_len - FCP_CDB_LENGTH) >> 2; |
| 2285 | |
| 2286 | memcpy(fcp_cmnd_iu->fcp_cdb, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); |
| 2287 | |
| 2288 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + |
| 2289 | fcp_cmnd_iu->add_fcp_cdb_length + sizeof(fcp_dl_t); |
| 2290 | |
| 2291 | real_bytes = zfcp_qdio_sbals_from_sg(req, sbtype, |
| 2292 | scsi_sglist(scsi_cmnd), |
| 2293 | FSF_MAX_SBALS_PER_REQ); |
| 2294 | if (unlikely(real_bytes < 0)) { |
| 2295 | if (req->sbal_number < FSF_MAX_SBALS_PER_REQ) |
| 2296 | retval = -EIO; |
| 2297 | else { |
| 2298 | dev_err(&adapter->ccw_device->dev, |
| 2299 | "SCSI request too large. " |
| 2300 | "Shutting down unit 0x%016Lx on port " |
| 2301 | "0x%016Lx.\n", unit->fcp_lun, |
| 2302 | unit->port->wwpn); |
| 2303 | zfcp_erp_unit_shutdown(unit, 0, 131, req); |
| 2304 | retval = -EINVAL; |
| 2305 | } |
| 2306 | goto failed_scsi_cmnd; |
| 2307 | } |
| 2308 | |
| 2309 | zfcp_set_fcp_dl(fcp_cmnd_iu, real_bytes); |
| 2310 | |
| 2311 | if (use_timer) |
| 2312 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
| 2313 | |
| 2314 | retval = zfcp_fsf_req_send(req); |
| 2315 | if (unlikely(retval)) |
| 2316 | goto failed_scsi_cmnd; |
| 2317 | |
| 2318 | goto out; |
| 2319 | |
| 2320 | failed_scsi_cmnd: |
| 2321 | zfcp_unit_put(unit); |
| 2322 | zfcp_fsf_req_free(req); |
| 2323 | scsi_cmnd->host_scribble = NULL; |
| 2324 | out: |
| 2325 | spin_unlock(&adapter->req_q.lock); |
| 2326 | return retval; |
| 2327 | } |
| 2328 | |
| 2329 | /** |
| 2330 | * zfcp_fsf_send_fcp_ctm - send SCSI task management command |
| 2331 | * @adapter: pointer to struct zfcp-adapter |
| 2332 | * @unit: pointer to struct zfcp_unit |
| 2333 | * @tm_flags: unsigned byte for task management flags |
| 2334 | * @req_flags: int request flags |
| 2335 | * Returns: on success pointer to struct fsf_req, NULL otherwise |
| 2336 | */ |
| 2337 | struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_adapter *adapter, |
| 2338 | struct zfcp_unit *unit, |
| 2339 | u8 tm_flags, int req_flags) |
| 2340 | { |
| 2341 | volatile struct qdio_buffer_element *sbale; |
| 2342 | struct zfcp_fsf_req *req = NULL; |
| 2343 | struct fcp_cmnd_iu *fcp_cmnd_iu; |
| 2344 | |
| 2345 | if (unlikely(!(atomic_read(&unit->status) & |
| 2346 | ZFCP_STATUS_COMMON_UNBLOCKED))) |
| 2347 | return NULL; |
| 2348 | |
| 2349 | spin_lock(&adapter->req_q.lock); |
| 2350 | if (!atomic_read(&adapter->req_q.count)) |
| 2351 | goto out; |
| 2352 | req = zfcp_fsf_req_create(adapter, FSF_QTCB_FCP_CMND, req_flags, |
| 2353 | adapter->pool.fsf_req_scsi); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 2354 | if (IS_ERR(req)) |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2355 | goto out; |
| 2356 | |
| 2357 | req->status |= ZFCP_STATUS_FSFREQ_TASK_MANAGEMENT; |
| 2358 | req->data = unit; |
| 2359 | req->handler = zfcp_fsf_send_fcp_command_handler; |
| 2360 | req->qtcb->header.lun_handle = unit->handle; |
| 2361 | req->qtcb->header.port_handle = unit->port->handle; |
| 2362 | req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND; |
| 2363 | req->qtcb->bottom.io.service_class = FSF_CLASS_3; |
| 2364 | req->qtcb->bottom.io.fcp_cmnd_length = sizeof(struct fcp_cmnd_iu) + |
| 2365 | sizeof(fcp_dl_t); |
| 2366 | |
| 2367 | sbale = zfcp_qdio_sbale_req(req); |
| 2368 | sbale[0].flags |= SBAL_FLAGS0_TYPE_WRITE; |
| 2369 | sbale[1].flags |= SBAL_FLAGS_LAST_ENTRY; |
| 2370 | |
| 2371 | fcp_cmnd_iu = (struct fcp_cmnd_iu *) &req->qtcb->bottom.io.fcp_cmnd; |
| 2372 | fcp_cmnd_iu->fcp_lun = unit->fcp_lun; |
| 2373 | fcp_cmnd_iu->task_management_flags = tm_flags; |
| 2374 | |
| 2375 | zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT); |
| 2376 | if (!zfcp_fsf_req_send(req)) |
| 2377 | goto out; |
| 2378 | |
| 2379 | zfcp_fsf_req_free(req); |
| 2380 | req = NULL; |
| 2381 | out: |
| 2382 | spin_unlock(&adapter->req_q.lock); |
| 2383 | return req; |
| 2384 | } |
| 2385 | |
| 2386 | static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req) |
| 2387 | { |
| 2388 | if (req->qtcb->header.fsf_status != FSF_GOOD) |
| 2389 | req->status |= ZFCP_STATUS_FSFREQ_ERROR; |
| 2390 | } |
| 2391 | |
| 2392 | /** |
| 2393 | * zfcp_fsf_control_file - control file upload/download |
| 2394 | * @adapter: pointer to struct zfcp_adapter |
| 2395 | * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc |
| 2396 | * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2397 | */ |
Christof Schmitt | 45633fd | 2008-06-10 18:20:55 +0200 | [diff] [blame] | 2398 | struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter, |
| 2399 | struct zfcp_fsf_cfdc *fsf_cfdc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2400 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2401 | volatile struct qdio_buffer_element *sbale; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2402 | struct zfcp_fsf_req *req = NULL; |
| 2403 | struct fsf_qtcb_bottom_support *bottom; |
| 2404 | int direction, retval = -EIO, bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2405 | |
Christof Schmitt | 45633fd | 2008-06-10 18:20:55 +0200 | [diff] [blame] | 2406 | if (!(adapter->adapter_features & FSF_FEATURE_CFDC)) |
| 2407 | return ERR_PTR(-EOPNOTSUPP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2408 | |
Christof Schmitt | 45633fd | 2008-06-10 18:20:55 +0200 | [diff] [blame] | 2409 | switch (fsf_cfdc->command) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2410 | case FSF_QTCB_DOWNLOAD_CONTROL_FILE: |
| 2411 | direction = SBAL_FLAGS0_TYPE_WRITE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2412 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2413 | case FSF_QTCB_UPLOAD_CONTROL_FILE: |
| 2414 | direction = SBAL_FLAGS0_TYPE_READ; |
| 2415 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2416 | default: |
Christof Schmitt | 45633fd | 2008-06-10 18:20:55 +0200 | [diff] [blame] | 2417 | return ERR_PTR(-EINVAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2418 | } |
| 2419 | |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 2420 | spin_lock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2421 | if (zfcp_fsf_req_sbal_get(adapter)) |
| 2422 | goto out; |
| 2423 | |
| 2424 | req = zfcp_fsf_req_create(adapter, fsf_cfdc->command, 0, NULL); |
Hirofumi Nakagawa | 025270f | 2008-08-21 13:43:37 +0200 | [diff] [blame^] | 2425 | if (IS_ERR(req)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2426 | retval = -EPERM; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2427 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2428 | } |
| 2429 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2430 | req->handler = zfcp_fsf_control_file_handler; |
| 2431 | |
| 2432 | sbale = zfcp_qdio_sbale_req(req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2433 | sbale[0].flags |= direction; |
| 2434 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2435 | bottom = &req->qtcb->bottom.support; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2436 | bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE; |
Christof Schmitt | 45633fd | 2008-06-10 18:20:55 +0200 | [diff] [blame] | 2437 | bottom->option = fsf_cfdc->option; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2438 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2439 | bytes = zfcp_qdio_sbals_from_sg(req, direction, fsf_cfdc->sg, |
| 2440 | FSF_MAX_SBALS_PER_REQ); |
Christof Schmitt | 45633fd | 2008-06-10 18:20:55 +0200 | [diff] [blame] | 2441 | if (bytes != ZFCP_CFDC_MAX_SIZE) { |
| 2442 | retval = -ENOMEM; |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2443 | zfcp_fsf_req_free(req); |
| 2444 | goto out; |
Christof Schmitt | 45633fd | 2008-06-10 18:20:55 +0200 | [diff] [blame] | 2445 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2446 | |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2447 | zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT); |
| 2448 | retval = zfcp_fsf_req_send(req); |
| 2449 | out: |
Christof Schmitt | d453881 | 2008-08-21 13:43:32 +0200 | [diff] [blame] | 2450 | spin_unlock_bh(&adapter->req_q.lock); |
Swen Schillig | c41f8cb | 2008-07-02 10:56:39 +0200 | [diff] [blame] | 2451 | |
| 2452 | if (!retval) { |
| 2453 | wait_event(req->completion_wq, |
| 2454 | req->status & ZFCP_STATUS_FSFREQ_COMPLETED); |
| 2455 | return req; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2456 | } |
Christof Schmitt | 45633fd | 2008-06-10 18:20:55 +0200 | [diff] [blame] | 2457 | return ERR_PTR(retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2458 | } |