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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Christof Schmitt553448f2008-06-10 18:20:58 +02002 * zfcp device driver
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
Christof Schmitt553448f2008-06-10 18:20:58 +02004 * Implementation of FSF commands.
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 *
Christof Schmitt615f59e2010-02-17 11:18:56 +01006 * Copyright IBM Corporation 2002, 2010
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 */
8
Christof Schmittecf39d42008-12-25 13:39:53 +01009#define KMSG_COMPONENT "zfcp"
10#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11
Stefan Raspl0997f1c2008-10-16 08:23:39 +020012#include <linux/blktrace_api.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090013#include <linux/slab.h>
Christof Schmitt9d05ce22009-11-24 16:54:09 +010014#include <scsi/fc/fc_els.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include "zfcp_ext.h"
Christof Schmitt4318e082009-11-24 16:54:08 +010016#include "zfcp_fc.h"
Christof Schmittdcd20e22009-08-18 15:43:08 +020017#include "zfcp_dbf.h"
Christof Schmitt34c2b712010-02-17 11:18:59 +010018#include "zfcp_qdio.h"
Christof Schmittb6bd2fb2010-02-17 11:18:50 +010019#include "zfcp_reqlist.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070020
Christof Schmitt259afe22011-02-22 19:54:44 +010021struct kmem_cache *zfcp_fsf_qtcb_cache;
22
Christof Schmitt287ac012008-07-02 10:56:40 +020023static void zfcp_fsf_request_timeout_handler(unsigned long data)
24{
25 struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
Christof Schmitt339f4f42010-07-16 15:37:43 +020026 zfcp_qdio_siosl(adapter);
Swen Schillig5ffd51a2009-03-02 13:09:04 +010027 zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
Swen Schilligea4a3a62010-12-02 15:16:16 +010028 "fsrth_1");
Christof Schmitt287ac012008-07-02 10:56:40 +020029}
30
31static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
32 unsigned long timeout)
33{
34 fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
35 fsf_req->timer.data = (unsigned long) fsf_req->adapter;
36 fsf_req->timer.expires = jiffies + timeout;
37 add_timer(&fsf_req->timer);
38}
39
40static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
41{
42 BUG_ON(!fsf_req->erp_action);
43 fsf_req->timer.function = zfcp_erp_timeout_handler;
44 fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
45 fsf_req->timer.expires = jiffies + 30 * HZ;
46 add_timer(&fsf_req->timer);
47}
48
Linus Torvalds1da177e2005-04-16 15:20:36 -070049/* association between FSF command and FSF QTCB type */
50static u32 fsf_qtcb_type[] = {
51 [FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND,
52 [FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND,
53 [FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND,
54 [FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND,
55 [FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND,
56 [FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND,
57 [FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND,
58 [FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND,
59 [FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND,
60 [FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND,
61 [FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND,
62 [FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND,
63 [FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
64};
65
Christof Schmitt553448f2008-06-10 18:20:58 +020066static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
67{
Christof Schmittff3b24f2008-10-01 12:42:15 +020068 dev_err(&req->adapter->ccw_device->dev, "FCP device not "
69 "operational because of an unsupported FC class\n");
Swen Schilligea4a3a62010-12-02 15:16:16 +010070 zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1");
Christof Schmitt553448f2008-06-10 18:20:58 +020071 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
72}
73
Swen Schilligc41f8cb2008-07-02 10:56:39 +020074/**
75 * zfcp_fsf_req_free - free memory used by fsf request
76 * @fsf_req: pointer to struct zfcp_fsf_req
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 */
Swen Schilligc41f8cb2008-07-02 10:56:39 +020078void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
Linus Torvalds1da177e2005-04-16 15:20:36 -070079{
Swen Schilligc41f8cb2008-07-02 10:56:39 +020080 if (likely(req->pool)) {
Swen Schilliga4623c42009-08-18 15:43:15 +020081 if (likely(req->qtcb))
82 mempool_free(req->qtcb, req->adapter->pool.qtcb_pool);
Swen Schilligc41f8cb2008-07-02 10:56:39 +020083 mempool_free(req, req->pool);
Heiko Carstensdd52e0e2006-09-18 22:28:49 +020084 return;
85 }
86
Swen Schilliga4623c42009-08-18 15:43:15 +020087 if (likely(req->qtcb))
Christof Schmitt259afe22011-02-22 19:54:44 +010088 kmem_cache_free(zfcp_fsf_qtcb_cache, req->qtcb);
Swen Schilliga4623c42009-08-18 15:43:15 +020089 kfree(req);
Linus Torvalds1da177e2005-04-16 15:20:36 -070090}
91
Swen Schilligc41f8cb2008-07-02 10:56:39 +020092static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
Linus Torvalds1da177e2005-04-16 15:20:36 -070093{
Swen Schilligecf0c772009-11-24 16:53:58 +010094 unsigned long flags;
Swen Schilligc41f8cb2008-07-02 10:56:39 +020095 struct fsf_status_read_buffer *sr_buf = req->data;
96 struct zfcp_adapter *adapter = req->adapter;
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 struct zfcp_port *port;
Christof Schmitt800c0ca2009-11-24 16:54:12 +010098 int d_id = ntoh24(sr_buf->d_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
Swen Schilligecf0c772009-11-24 16:53:58 +0100100 read_lock_irqsave(&adapter->port_list_lock, flags);
101 list_for_each_entry(port, &adapter->port_list, list)
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200102 if (port->d_id == d_id) {
Swen Schilligea4a3a62010-12-02 15:16:16 +0100103 zfcp_erp_port_reopen(port, 0, "fssrpc1");
Swen Schilligecf0c772009-11-24 16:53:58 +0100104 break;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200105 }
Swen Schilligecf0c772009-11-24 16:53:58 +0100106 read_unlock_irqrestore(&adapter->port_list_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107}
108
Swen Schilligedaed8592010-09-08 14:40:01 +0200109static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req,
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200110 struct fsf_link_down_info *link_down)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111{
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200112 struct zfcp_adapter *adapter = req->adapter;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200114 if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
115 return;
116
117 atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
Christof Schmitt70932932009-04-17 15:08:15 +0200118
Christof Schmitta2fa0ae2009-03-02 13:09:08 +0100119 zfcp_scsi_schedule_rports_block(adapter);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200120
121 if (!link_down)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 goto out;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200123
124 switch (link_down->error_code) {
125 case FSF_PSQ_LINK_NO_LIGHT:
126 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200127 "There is no light signal from the local "
128 "fibre channel cable\n");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200129 break;
130 case FSF_PSQ_LINK_WRAP_PLUG:
131 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200132 "There is a wrap plug instead of a fibre "
133 "channel cable\n");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200134 break;
135 case FSF_PSQ_LINK_NO_FCP:
136 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200137 "The adjacent fibre channel node does not "
138 "support FCP\n");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200139 break;
140 case FSF_PSQ_LINK_FIRMWARE_UPDATE:
141 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200142 "The FCP device is suspended because of a "
143 "firmware update\n");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200144 break;
145 case FSF_PSQ_LINK_INVALID_WWPN:
146 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200147 "The FCP device detected a WWPN that is "
148 "duplicate or not valid\n");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200149 break;
150 case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
151 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200152 "The fibre channel fabric does not support NPIV\n");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200153 break;
154 case FSF_PSQ_LINK_NO_FCP_RESOURCES:
155 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200156 "The FCP adapter cannot support more NPIV ports\n");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200157 break;
158 case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
159 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200160 "The adjacent switch cannot support "
161 "more NPIV ports\n");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200162 break;
163 case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
164 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200165 "The FCP adapter could not log in to the "
166 "fibre channel fabric\n");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200167 break;
168 case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
169 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200170 "The WWPN assignment file on the FCP adapter "
171 "has been damaged\n");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200172 break;
173 case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
174 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200175 "The mode table on the FCP adapter "
176 "has been damaged\n");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200177 break;
178 case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
179 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200180 "All NPIV ports on the FCP adapter have "
181 "been assigned\n");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200182 break;
183 default:
184 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200185 "The link between the FCP adapter and "
186 "the FC fabric is down\n");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200187 }
188out:
Swen Schilligedaed8592010-09-08 14:40:01 +0200189 zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200190}
191
192static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
193{
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200194 struct fsf_status_read_buffer *sr_buf = req->data;
195 struct fsf_link_down_info *ldi =
196 (struct fsf_link_down_info *) &sr_buf->payload;
197
198 switch (sr_buf->status_subtype) {
199 case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
Swen Schilligedaed8592010-09-08 14:40:01 +0200200 zfcp_fsf_link_down_info_eval(req, ldi);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200201 break;
202 case FSF_STATUS_READ_SUB_FDISC_FAILED:
Swen Schilligedaed8592010-09-08 14:40:01 +0200203 zfcp_fsf_link_down_info_eval(req, ldi);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200204 break;
205 case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
Swen Schilligedaed8592010-09-08 14:40:01 +0200206 zfcp_fsf_link_down_info_eval(req, NULL);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200207 };
208}
209
210static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
211{
212 struct zfcp_adapter *adapter = req->adapter;
213 struct fsf_status_read_buffer *sr_buf = req->data;
214
215 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
Swen Schilliga54ca0f2010-12-02 15:16:14 +0100216 zfcp_dbf_hba_fsf_uss("fssrh_1", req);
Christof Schmittc7b279a2011-02-22 19:54:40 +0100217 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200218 zfcp_fsf_req_free(req);
219 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 }
221
Swen Schilliga54ca0f2010-12-02 15:16:14 +0100222 zfcp_dbf_hba_fsf_uss("fssrh_2", req);
Maxim Shchetynin8a36e452005-09-13 21:50:38 +0200223
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200224 switch (sr_buf->status_type) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 case FSF_STATUS_READ_PORT_CLOSED:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200226 zfcp_fsf_status_read_port_closed(req);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 case FSF_STATUS_READ_INCOMING_ELS:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200229 zfcp_fc_incoming_els(req);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 case FSF_STATUS_READ_SENSE_DATA_AVAIL:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
Christof Schmittff3b24f2008-10-01 12:42:15 +0200234 dev_warn(&adapter->ccw_device->dev,
235 "The error threshold for checksum statistics "
236 "has been exceeded\n");
Swen Schilliga54ca0f2010-12-02 15:16:14 +0100237 zfcp_dbf_hba_bit_err("fssrh_3", req);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 case FSF_STATUS_READ_LINK_DOWN:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200240 zfcp_fsf_status_read_link_down(req);
Sven Schuetz2d1e5472010-07-16 15:37:39 +0200241 zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 case FSF_STATUS_READ_LINK_UP:
Christof Schmitt553448f2008-06-10 18:20:58 +0200244 dev_info(&adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200245 "The local link has been restored\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 /* All ports should be marked as ready to run again */
Swen Schilligedaed8592010-09-08 14:40:01 +0200247 zfcp_erp_set_adapter_status(adapter,
248 ZFCP_STATUS_COMMON_RUNNING);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 zfcp_erp_adapter_reopen(adapter,
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200250 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
251 ZFCP_STATUS_COMMON_ERP_FAILED,
Swen Schilligea4a3a62010-12-02 15:16:16 +0100252 "fssrh_2");
Sven Schuetz2d1e5472010-07-16 15:37:39 +0200253 zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0);
254
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 break;
Maxim Shchetynin9eb69af2006-01-05 09:56:47 +0100256 case FSF_STATUS_READ_NOTIFICATION_LOST:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200257 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
Christof Schmitta1ca4832010-09-08 14:39:59 +0200258 zfcp_cfdc_adapter_access_changed(adapter);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200259 if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
Swen Schillig9eae07e2009-11-24 16:54:06 +0100260 queue_work(adapter->work_queue, &adapter->scan_work);
Maxim Shchetynin9eb69af2006-01-05 09:56:47 +0100261 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 case FSF_STATUS_READ_CFDC_UPDATED:
Christof Schmitta1ca4832010-09-08 14:39:59 +0200263 zfcp_cfdc_adapter_access_changed(adapter);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 break;
Maxim Shchetyninaef4a982005-09-13 21:51:16 +0200265 case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200266 adapter->adapter_features = sr_buf->payload.word[0];
Maxim Shchetyninaef4a982005-09-13 21:51:16 +0200267 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 }
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200269
Christof Schmittc7b279a2011-02-22 19:54:40 +0100270 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200271 zfcp_fsf_req_free(req);
Swen Schilligd26ab062008-05-19 12:17:37 +0200272
273 atomic_inc(&adapter->stat_miss);
Swen Schillig45446832009-08-18 15:43:17 +0200274 queue_work(adapter->work_queue, &adapter->stat_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275}
276
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200277static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278{
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200279 switch (req->qtcb->header.fsf_status_qual.word[0]) {
280 case FSF_SQ_FCP_RSP_AVAILABLE:
281 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
282 case FSF_SQ_NO_RETRY_POSSIBLE:
283 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
284 return;
285 case FSF_SQ_COMMAND_ABORTED:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200286 break;
287 case FSF_SQ_NO_RECOM:
288 dev_err(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200289 "The FCP adapter reported a problem "
290 "that cannot be recovered\n");
Christof Schmitt339f4f42010-07-16 15:37:43 +0200291 zfcp_qdio_siosl(req->adapter);
Swen Schilligea4a3a62010-12-02 15:16:16 +0100292 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200293 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294 }
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200295 /* all non-return stats set FSFREQ_ERROR*/
296 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
297}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200299static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
300{
301 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
302 return;
Andreas Herrmann059c97d2005-09-13 21:47:52 +0200303
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200304 switch (req->qtcb->header.fsf_status) {
305 case FSF_UNKNOWN_COMMAND:
306 dev_err(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200307 "The FCP adapter does not recognize the command 0x%x\n",
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200308 req->qtcb->header.fsf_command);
Swen Schilligea4a3a62010-12-02 15:16:16 +0100309 zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200310 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 case FSF_ADAPTER_STATUS_AVAILABLE:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200313 zfcp_fsf_fsfstatus_qual_eval(req);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316}
317
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200318static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319{
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200320 struct zfcp_adapter *adapter = req->adapter;
321 struct fsf_qtcb *qtcb = req->qtcb;
322 union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323
Swen Schillig57717102009-08-18 15:43:21 +0200324 zfcp_dbf_hba_fsf_response(req);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200326 if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
Christof Schmitt4c571c62009-11-24 16:54:15 +0100327 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200328 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 }
330
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200331 switch (qtcb->prefix.prot_status) {
332 case FSF_PROT_GOOD:
333 case FSF_PROT_FSF_STATUS_PRESENTED:
334 return;
335 case FSF_PROT_QTCB_VERSION_ERROR:
336 dev_err(&adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200337 "QTCB version 0x%x not supported by FCP adapter "
338 "(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
339 psq->word[0], psq->word[1]);
Swen Schilligea4a3a62010-12-02 15:16:16 +0100340 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 break;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200342 case FSF_PROT_ERROR_STATE:
343 case FSF_PROT_SEQ_NUMB_ERROR:
Swen Schilligea4a3a62010-12-02 15:16:16 +0100344 zfcp_erp_adapter_reopen(adapter, 0, "fspse_2");
Christof Schmitt4c571c62009-11-24 16:54:15 +0100345 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 break;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200347 case FSF_PROT_UNSUPP_QTCB_TYPE:
348 dev_err(&adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200349 "The QTCB type is not supported by the FCP adapter\n");
Swen Schilligea4a3a62010-12-02 15:16:16 +0100350 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 break;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200352 case FSF_PROT_HOST_CONNECTION_INITIALIZING:
353 atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
354 &adapter->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 break;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200356 case FSF_PROT_DUPLICATE_REQUEST_ID:
357 dev_err(&adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200358 "0x%Lx is an ambiguous request identifier\n",
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200359 (unsigned long long)qtcb->bottom.support.req_handle);
Swen Schilligea4a3a62010-12-02 15:16:16 +0100360 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 break;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200362 case FSF_PROT_LINK_DOWN:
Swen Schilligedaed8592010-09-08 14:40:01 +0200363 zfcp_fsf_link_down_info_eval(req, &psq->link_down_info);
Christof Schmitt452b5052010-02-17 11:18:51 +0100364 /* go through reopen to flush pending requests */
Swen Schilligea4a3a62010-12-02 15:16:16 +0100365 zfcp_erp_adapter_reopen(adapter, 0, "fspse_6");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366 break;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200367 case FSF_PROT_REEST_QUEUE:
368 /* All ports should be marked as ready to run again */
Swen Schilligedaed8592010-09-08 14:40:01 +0200369 zfcp_erp_set_adapter_status(adapter,
370 ZFCP_STATUS_COMMON_RUNNING);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200371 zfcp_erp_adapter_reopen(adapter,
372 ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
Swen Schillig5ffd51a2009-03-02 13:09:04 +0100373 ZFCP_STATUS_COMMON_ERP_FAILED,
Swen Schilligea4a3a62010-12-02 15:16:16 +0100374 "fspse_8");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200375 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 default:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200377 dev_err(&adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200378 "0x%x is not a valid transfer protocol status\n",
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200379 qtcb->prefix.prot_status);
Christof Schmitt339f4f42010-07-16 15:37:43 +0200380 zfcp_qdio_siosl(adapter);
Swen Schilligea4a3a62010-12-02 15:16:16 +0100381 zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382 }
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200383 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384}
385
386/**
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200387 * zfcp_fsf_req_complete - process completion of a FSF request
388 * @fsf_req: The FSF request that has been completed.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 *
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200390 * When a request has been completed either from the FCP adapter,
391 * or it has been dismissed due to a queue shutdown, this function
392 * is called to process the completion status and trigger further
393 * events related to the FSF request.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 */
Swen Schilligbd63eaf2009-08-18 15:43:13 +0200395static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200396{
397 if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
398 zfcp_fsf_status_read_handler(req);
399 return;
400 }
401
402 del_timer(&req->timer);
403 zfcp_fsf_protstatus_eval(req);
404 zfcp_fsf_fsfstatus_eval(req);
405 req->handler(req);
406
407 if (req->erp_action)
Christof Schmitt287ac012008-07-02 10:56:40 +0200408 zfcp_erp_notify(req->erp_action, 0);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200409
410 if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
411 zfcp_fsf_req_free(req);
412 else
Swen Schillig058b8642009-08-18 15:43:14 +0200413 complete(&req->completion);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200414}
415
Swen Schilligbd63eaf2009-08-18 15:43:13 +0200416/**
417 * zfcp_fsf_req_dismiss_all - dismiss all fsf requests
418 * @adapter: pointer to struct zfcp_adapter
419 *
420 * Never ever call this without shutting down the adapter first.
421 * Otherwise the adapter would continue using and corrupting s390 storage.
422 * Included BUG_ON() call to ensure this is done.
423 * ERP is supposed to be the only user of this function.
424 */
425void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
426{
427 struct zfcp_fsf_req *req, *tmp;
Swen Schilligbd63eaf2009-08-18 15:43:13 +0200428 LIST_HEAD(remove_queue);
Swen Schilligbd63eaf2009-08-18 15:43:13 +0200429
430 BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
Christof Schmittb6bd2fb2010-02-17 11:18:50 +0100431 zfcp_reqlist_move(adapter->req_list, &remove_queue);
Swen Schilligbd63eaf2009-08-18 15:43:13 +0200432
433 list_for_each_entry_safe(req, tmp, &remove_queue, list) {
434 list_del(&req->list);
435 req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
436 zfcp_fsf_req_complete(req);
437 }
438}
439
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200440static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441{
Christof Schmitt9d05ce22009-11-24 16:54:09 +0100442 struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200443 struct zfcp_adapter *adapter = req->adapter;
Andreas Herrmann13e1e1f2005-09-19 16:56:17 +0200444 struct Scsi_Host *shost = adapter->scsi_host;
Christof Schmitt9d05ce22009-11-24 16:54:09 +0100445 struct fc_els_flogi *nsp, *plogi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446
Christof Schmitt9d05ce22009-11-24 16:54:09 +0100447 /* adjust pointers for missing command code */
448 nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
449 - sizeof(u32));
450 plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
451 - sizeof(u32));
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200452
453 if (req->data)
454 memcpy(req->data, bottom, sizeof(*bottom));
455
Christof Schmitt9d05ce22009-11-24 16:54:09 +0100456 fc_host_port_name(shost) = nsp->fl_wwpn;
457 fc_host_node_name(shost) = nsp->fl_wwnn;
Christof Schmitt800c0ca2009-11-24 16:54:12 +0100458 fc_host_port_id(shost) = ntoh24(bottom->s_id);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200459 fc_host_speed(shost) = bottom->fc_link_speed;
460 fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
461
462 adapter->hydra_version = bottom->adapter_type;
Christof Schmittfaf4cd82010-07-16 15:37:36 +0200463 adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK;
Christof Schmitt8d88cf32010-06-21 10:11:33 +0200464 adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
465 (u16)FSF_STATUS_READS_RECOM);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200466
467 if (fc_host_permanent_port_name(shost) == -1)
468 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
469
470 switch (bottom->fc_topology) {
471 case FSF_TOPO_P2P:
Christof Schmitt800c0ca2009-11-24 16:54:12 +0100472 adapter->peer_d_id = ntoh24(bottom->peer_d_id);
Christof Schmitt9d05ce22009-11-24 16:54:09 +0100473 adapter->peer_wwpn = plogi->fl_wwpn;
474 adapter->peer_wwnn = plogi->fl_wwnn;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200475 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200476 break;
477 case FSF_TOPO_FABRIC:
478 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200479 break;
480 case FSF_TOPO_AL:
481 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
Christof Schmittdceab652009-05-15 13:18:18 +0200482 /* fall through */
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200483 default:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200484 dev_err(&adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200485 "Unknown or unsupported arbitrated loop "
486 "fibre channel topology detected\n");
Swen Schilligea4a3a62010-12-02 15:16:16 +0100487 zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200488 return -EIO;
489 }
490
Felix Beckef3eb712010-07-16 15:37:42 +0200491 zfcp_scsi_set_prot(adapter);
492
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200493 return 0;
494}
495
496static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
497{
498 struct zfcp_adapter *adapter = req->adapter;
499 struct fsf_qtcb *qtcb = req->qtcb;
500 struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
501 struct Scsi_Host *shost = adapter->scsi_host;
502
503 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
504 return;
505
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 adapter->fsf_lic_version = bottom->lic_version;
Maxim Shchetyninaef4a982005-09-13 21:51:16 +0200507 adapter->adapter_features = bottom->adapter_features;
508 adapter->connection_features = bottom->connection_features;
6f71d9b2005-04-10 23:04:28 -0500509 adapter->peer_wwpn = 0;
510 adapter->peer_wwnn = 0;
511 adapter->peer_d_id = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200513 switch (qtcb->header.fsf_status) {
514 case FSF_GOOD:
515 if (zfcp_fsf_exchange_config_evaluate(req))
516 return;
Swen Schillig52ef11a2007-08-28 09:31:09 +0200517
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200518 if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
519 dev_err(&adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200520 "FCP adapter maximum QTCB size (%d bytes) "
521 "is too small\n",
522 bottom->max_qtcb_size);
Swen Schilligea4a3a62010-12-02 15:16:16 +0100523 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200524 return;
525 }
526 atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
527 &adapter->status);
528 break;
529 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
Andreas Herrmann13e1e1f2005-09-19 16:56:17 +0200530 fc_host_node_name(shost) = 0;
531 fc_host_port_name(shost) = 0;
532 fc_host_port_id(shost) = 0;
533 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
Andreas Herrmannad757cd2006-01-13 02:26:11 +0100534 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 adapter->hydra_version = 0;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200536
Swen Schilligedaed8592010-09-08 14:40:01 +0200537 zfcp_fsf_link_down_info_eval(req,
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200538 &qtcb->header.fsf_status_qual.link_down_info);
539 break;
540 default:
Swen Schilligea4a3a62010-12-02 15:16:16 +0100541 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200542 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 }
544
Maxim Shchetyninaef4a982005-09-13 21:51:16 +0200545 if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 adapter->hardware_version = bottom->hardware_version;
Andreas Herrmann13e1e1f2005-09-19 16:56:17 +0200547 memcpy(fc_host_serial_number(shost), bottom->serial_number,
548 min(FC_SERIAL_NUMBER_SIZE, 17));
549 EBCASC(fc_host_serial_number(shost),
550 min(FC_SERIAL_NUMBER_SIZE, 17));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 }
552
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200553 if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
Christof Schmitt553448f2008-06-10 18:20:58 +0200554 dev_err(&adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200555 "The FCP adapter only supports newer "
556 "control block versions\n");
Swen Schilligea4a3a62010-12-02 15:16:16 +0100557 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200558 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 }
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200560 if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
Christof Schmitt553448f2008-06-10 18:20:58 +0200561 dev_err(&adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +0200562 "The FCP adapter only supports older "
563 "control block versions\n");
Swen Schilligea4a3a62010-12-02 15:16:16 +0100564 zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566}
567
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200568static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569{
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200570 struct zfcp_adapter *adapter = req->adapter;
571 struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
572 struct Scsi_Host *shost = adapter->scsi_host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200574 if (req->data)
575 memcpy(req->data, bottom, sizeof(*bottom));
Andreas Herrmann2f8f3ed2006-02-11 01:41:50 +0100576
Christof Schmitt02829852009-03-02 13:09:06 +0100577 if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
Andreas Herrmann2f8f3ed2006-02-11 01:41:50 +0100578 fc_host_permanent_port_name(shost) = bottom->wwpn;
Christof Schmitt02829852009-03-02 13:09:06 +0100579 fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
580 } else
Andreas Herrmann2f8f3ed2006-02-11 01:41:50 +0100581 fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
582 fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
583 fc_host_supported_speeds(shost) = bottom->supported_speed;
Christof Schmitt2d8e62b2010-02-17 11:18:58 +0100584 memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
585 FC_FC4_LIST_SIZE);
586 memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
587 FC_FC4_LIST_SIZE);
Andreas Herrmann2f8f3ed2006-02-11 01:41:50 +0100588}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200590static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591{
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200592 struct fsf_qtcb *qtcb = req->qtcb;
Andreas Herrmann2f8f3ed2006-02-11 01:41:50 +0100593
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200594 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595 return;
596
Maxim Shchetyninaef4a982005-09-13 21:51:16 +0200597 switch (qtcb->header.fsf_status) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200598 case FSF_GOOD:
599 zfcp_fsf_exchange_port_evaluate(req);
Maxim Shchetyninaef4a982005-09-13 21:51:16 +0200600 break;
Maxim Shchetyninaef4a982005-09-13 21:51:16 +0200601 case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200602 zfcp_fsf_exchange_port_evaluate(req);
Swen Schilligedaed8592010-09-08 14:40:01 +0200603 zfcp_fsf_link_down_info_eval(req,
Maxim Shchetyninaef4a982005-09-13 21:51:16 +0200604 &qtcb->header.fsf_status_qual.link_down_info);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200605 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606 }
607}
608
Swen Schilliga4623c42009-08-18 15:43:15 +0200609static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool)
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200610{
611 struct zfcp_fsf_req *req;
Swen Schilliga4623c42009-08-18 15:43:15 +0200612
613 if (likely(pool))
614 req = mempool_alloc(pool, GFP_ATOMIC);
615 else
616 req = kmalloc(sizeof(*req), GFP_ATOMIC);
617
618 if (unlikely(!req))
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200619 return NULL;
Swen Schilliga4623c42009-08-18 15:43:15 +0200620
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200621 memset(req, 0, sizeof(*req));
Christof Schmitt88f2a972008-11-04 16:35:07 +0100622 req->pool = pool;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200623 return req;
624}
625
Swen Schilliga4623c42009-08-18 15:43:15 +0200626static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200627{
Swen Schilliga4623c42009-08-18 15:43:15 +0200628 struct fsf_qtcb *qtcb;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200629
630 if (likely(pool))
631 qtcb = mempool_alloc(pool, GFP_ATOMIC);
632 else
Christof Schmitt259afe22011-02-22 19:54:44 +0100633 qtcb = kmem_cache_alloc(zfcp_fsf_qtcb_cache, GFP_ATOMIC);
Swen Schilliga4623c42009-08-18 15:43:15 +0200634
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200635 if (unlikely(!qtcb))
636 return NULL;
637
638 memset(qtcb, 0, sizeof(*qtcb));
Swen Schilliga4623c42009-08-18 15:43:15 +0200639 return qtcb;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200640}
641
Swen Schillig564e1c82009-08-18 15:43:19 +0200642static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
Jan Glauber3ec90872011-06-06 14:14:40 +0200643 u32 fsf_cmd, u8 sbtype,
Christof Schmitt1674b402010-04-30 18:09:34 +0200644 mempool_t *pool)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645{
Swen Schillig564e1c82009-08-18 15:43:19 +0200646 struct zfcp_adapter *adapter = qdio->adapter;
Swen Schilliga4623c42009-08-18 15:43:15 +0200647 struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200648
649 if (unlikely(!req))
Christof Schmitt1e9b1642009-07-13 15:06:04 +0200650 return ERR_PTR(-ENOMEM);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200651
652 if (adapter->req_no == 0)
653 adapter->req_no++;
654
655 INIT_LIST_HEAD(&req->list);
656 init_timer(&req->timer);
Swen Schillig058b8642009-08-18 15:43:14 +0200657 init_completion(&req->completion);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200658
659 req->adapter = adapter;
660 req->fsf_command = fsf_cmd;
Christof Schmitt52bfb552009-03-02 13:08:58 +0100661 req->req_id = adapter->req_no;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200662
Swen Schilliga4623c42009-08-18 15:43:15 +0200663 if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) {
664 if (likely(pool))
665 req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool);
666 else
667 req->qtcb = zfcp_qtcb_alloc(NULL);
668
669 if (unlikely(!req->qtcb)) {
670 zfcp_fsf_req_free(req);
671 return ERR_PTR(-ENOMEM);
672 }
673
Christof Schmitt5bdecd22010-02-17 11:18:55 +0100674 req->seq_no = adapter->fsf_req_seq_no;
Swen Schillig564e1c82009-08-18 15:43:19 +0200675 req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200676 req->qtcb->prefix.req_id = req->req_id;
677 req->qtcb->prefix.ulp_info = 26;
678 req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
679 req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
680 req->qtcb->header.req_handle = req->req_id;
681 req->qtcb->header.fsf_command = req->fsf_command;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200682 }
683
Christof Schmitt1674b402010-04-30 18:09:34 +0200684 zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
685 req->qtcb, sizeof(struct fsf_qtcb));
686
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200687 return req;
688}
689
690static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
691{
692 struct zfcp_adapter *adapter = req->adapter;
Swen Schillig564e1c82009-08-18 15:43:19 +0200693 struct zfcp_qdio *qdio = adapter->qdio;
Christof Schmittb6bd2fb2010-02-17 11:18:50 +0100694 int with_qtcb = (req->qtcb != NULL);
Christof Schmitte60a6d62010-02-17 11:18:49 +0100695 int req_id = req->req_id;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200696
Christof Schmittb6bd2fb2010-02-17 11:18:50 +0100697 zfcp_reqlist_add(adapter->req_list, req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200698
Swen Schillig706eca42010-07-16 15:37:38 +0200699 req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200700 req->issued = get_clock();
Christof Schmitt34c2b712010-02-17 11:18:59 +0100701 if (zfcp_qdio_send(qdio, &req->qdio_req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200702 del_timer(&req->timer);
Christof Schmitt37651382008-11-04 16:35:08 +0100703 /* lookup request again, list might have changed */
Christof Schmittb6bd2fb2010-02-17 11:18:50 +0100704 zfcp_reqlist_find_rm(adapter->req_list, req_id);
Swen Schilligea4a3a62010-12-02 15:16:16 +0100705 zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200706 return -EIO;
707 }
708
709 /* Don't increase for unsolicited status */
Martin Petermann135ea132009-04-17 15:08:01 +0200710 if (with_qtcb)
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200711 adapter->fsf_req_seq_no++;
Christof Schmitt52bfb552009-03-02 13:08:58 +0100712 adapter->req_no++;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200713
714 return 0;
715}
716
717/**
718 * zfcp_fsf_status_read - send status read request
719 * @adapter: pointer to struct zfcp_adapter
720 * @req_flags: request flags
721 * Returns: 0 on success, ERROR otherwise
722 */
Swen Schillig564e1c82009-08-18 15:43:19 +0200723int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200724{
Swen Schillig564e1c82009-08-18 15:43:19 +0200725 struct zfcp_adapter *adapter = qdio->adapter;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200726 struct zfcp_fsf_req *req;
727 struct fsf_status_read_buffer *sr_buf;
Christof Schmittc7b279a2011-02-22 19:54:40 +0100728 struct page *page;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200729 int retval = -EIO;
730
Christof Schmitt44a24cb2010-09-08 14:39:57 +0200731 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +0200732 if (zfcp_qdio_sbal_get(qdio))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734
Christof Schmitt1674b402010-04-30 18:09:34 +0200735 req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, 0,
Swen Schilliga4623c42009-08-18 15:43:15 +0200736 adapter->pool.status_read_req);
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +0200737 if (IS_ERR(req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200738 retval = PTR_ERR(req);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739 goto out;
740 }
741
Christof Schmittc7b279a2011-02-22 19:54:40 +0100742 page = mempool_alloc(adapter->pool.sr_data, GFP_ATOMIC);
743 if (!page) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200744 retval = -ENOMEM;
745 goto failed_buf;
746 }
Christof Schmittc7b279a2011-02-22 19:54:40 +0100747 sr_buf = page_address(page);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200748 memset(sr_buf, 0, sizeof(*sr_buf));
749 req->data = sr_buf;
Christof Schmitt1674b402010-04-30 18:09:34 +0200750
751 zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf));
752 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200753
754 retval = zfcp_fsf_req_send(req);
755 if (retval)
756 goto failed_req_send;
757
758 goto out;
759
760failed_req_send:
Swen Schilliga54ca0f2010-12-02 15:16:14 +0100761 req->data = NULL;
Christof Schmittc7b279a2011-02-22 19:54:40 +0100762 mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200763failed_buf:
Swen Schilliga54ca0f2010-12-02 15:16:14 +0100764 zfcp_dbf_hba_fsf_uss("fssr__1", req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200765 zfcp_fsf_req_free(req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200766out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +0200767 spin_unlock_irq(&qdio->req_q_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 return retval;
769}
770
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200771static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772{
Christof Schmittb62a8d92010-09-08 14:39:55 +0200773 struct scsi_device *sdev = req->data;
774 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200775 union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200777 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
778 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700779
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200780 switch (req->qtcb->header.fsf_status) {
781 case FSF_PORT_HANDLE_NOT_VALID:
782 if (fsq->word[0] == fsq->word[1]) {
Christof Schmittb62a8d92010-09-08 14:39:55 +0200783 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0,
Swen Schilligea4a3a62010-12-02 15:16:16 +0100784 "fsafch1");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200785 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
786 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787 break;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200788 case FSF_LUN_HANDLE_NOT_VALID:
789 if (fsq->word[0] == fsq->word[1]) {
Swen Schilligea4a3a62010-12-02 15:16:16 +0100790 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2");
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200791 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
792 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793 break;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200794 case FSF_FCP_COMMAND_DOES_NOT_EXIST:
795 req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796 break;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200797 case FSF_PORT_BOXED:
Swen Schilligedaed8592010-09-08 14:40:01 +0200798 zfcp_erp_set_port_status(zfcp_sdev->port,
799 ZFCP_STATUS_COMMON_ACCESS_BOXED);
800 zfcp_erp_port_reopen(zfcp_sdev->port,
Swen Schilligea4a3a62010-12-02 15:16:16 +0100801 ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3");
Christof Schmitt4c571c62009-11-24 16:54:15 +0100802 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200803 break;
804 case FSF_LUN_BOXED:
Swen Schilligedaed8592010-09-08 14:40:01 +0200805 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
806 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
Swen Schilligea4a3a62010-12-02 15:16:16 +0100807 "fsafch4");
Christof Schmitt4c571c62009-11-24 16:54:15 +0100808 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200809 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 case FSF_ADAPTER_STATUS_AVAILABLE:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200811 switch (fsq->word[0]) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
Christof Schmittb62a8d92010-09-08 14:39:55 +0200813 zfcp_fc_test_link(zfcp_sdev->port);
Christof Schmittdceab652009-05-15 13:18:18 +0200814 /* fall through */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200816 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817 break;
818 }
819 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 case FSF_GOOD:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200821 req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
822 break;
823 }
824}
825
826/**
Christof Schmittb62a8d92010-09-08 14:39:55 +0200827 * zfcp_fsf_abort_fcp_cmnd - abort running SCSI command
828 * @scmnd: The SCSI command to abort
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200829 * Returns: pointer to struct zfcp_fsf_req
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200830 */
831
Christof Schmittb62a8d92010-09-08 14:39:55 +0200832struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200833{
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200834 struct zfcp_fsf_req *req = NULL;
Christof Schmittb62a8d92010-09-08 14:39:55 +0200835 struct scsi_device *sdev = scmnd->device;
836 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
837 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
838 unsigned long old_req_id = (unsigned long) scmnd->host_scribble;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200839
Christof Schmitt44a24cb2010-09-08 14:39:57 +0200840 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +0200841 if (zfcp_qdio_sbal_get(qdio))
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200842 goto out;
Swen Schillig564e1c82009-08-18 15:43:19 +0200843 req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
Jan Glauber3ec90872011-06-06 14:14:40 +0200844 SBAL_SFLAGS0_TYPE_READ,
Swen Schillig564e1c82009-08-18 15:43:19 +0200845 qdio->adapter->pool.scsi_abort);
Swen Schillig633528c2008-11-26 18:07:37 +0100846 if (IS_ERR(req)) {
847 req = NULL;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200848 goto out;
Swen Schillig633528c2008-11-26 18:07:37 +0100849 }
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200850
Christof Schmittb62a8d92010-09-08 14:39:55 +0200851 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200852 ZFCP_STATUS_COMMON_UNBLOCKED)))
853 goto out_error_free;
854
Christof Schmitt1674b402010-04-30 18:09:34 +0200855 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200856
Swen Schillig6fbf25e2010-11-17 14:23:41 +0100857 req->data = sdev;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200858 req->handler = zfcp_fsf_abort_fcp_command_handler;
Christof Schmittb62a8d92010-09-08 14:39:55 +0200859 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
860 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200861 req->qtcb->bottom.support.req_handle = (u64) old_req_id;
862
863 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
864 if (!zfcp_fsf_req_send(req))
865 goto out;
866
867out_error_free:
868 zfcp_fsf_req_free(req);
869 req = NULL;
870out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +0200871 spin_unlock_irq(&qdio->req_q_lock);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200872 return req;
873}
874
875static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
876{
877 struct zfcp_adapter *adapter = req->adapter;
Christof Schmitt7c7dc192009-11-24 16:54:13 +0100878 struct zfcp_fsf_ct_els *ct = req->data;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200879 struct fsf_qtcb_header *header = &req->qtcb->header;
880
Christof Schmitt7c7dc192009-11-24 16:54:13 +0100881 ct->status = -EINVAL;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200882
883 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
884 goto skip_fsfstatus;
885
886 switch (header->fsf_status) {
887 case FSF_GOOD:
Swen Schillig2c55b752010-12-02 15:16:13 +0100888 zfcp_dbf_san_res("fsscth1", req);
Christof Schmitt7c7dc192009-11-24 16:54:13 +0100889 ct->status = 0;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200890 break;
891 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
892 zfcp_fsf_class_not_supp(req);
893 break;
894 case FSF_ADAPTER_STATUS_AVAILABLE:
895 switch (header->fsf_status_qual.word[0]){
896 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200897 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
898 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
899 break;
900 }
901 break;
902 case FSF_ACCESS_DENIED:
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200903 break;
904 case FSF_PORT_BOXED:
Christof Schmitt4c571c62009-11-24 16:54:15 +0100905 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200906 break;
907 case FSF_PORT_HANDLE_NOT_VALID:
Swen Schilligea4a3a62010-12-02 15:16:16 +0100908 zfcp_erp_adapter_reopen(adapter, 0, "fsscth1");
Christof Schmittdceab652009-05-15 13:18:18 +0200909 /* fall through */
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200910 case FSF_GENERIC_COMMAND_REJECTED:
911 case FSF_PAYLOAD_SIZE_MISMATCH:
912 case FSF_REQUEST_SIZE_TOO_LARGE:
913 case FSF_RESPONSE_SIZE_TOO_LARGE:
914 case FSF_SBAL_MISMATCH:
915 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
916 break;
917 }
918
919skip_fsfstatus:
Christof Schmitt7c7dc192009-11-24 16:54:13 +0100920 if (ct->handler)
921 ct->handler(ct->handler_data);
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200922}
923
Christof Schmitt1674b402010-04-30 18:09:34 +0200924static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
925 struct zfcp_qdio_req *q_req,
Christof Schmitt426f6052009-07-13 15:06:06 +0200926 struct scatterlist *sg_req,
927 struct scatterlist *sg_resp)
928{
Christof Schmitt1674b402010-04-30 18:09:34 +0200929 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length);
930 zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length);
931 zfcp_qdio_set_sbale_last(qdio, q_req);
Christof Schmitt426f6052009-07-13 15:06:06 +0200932}
933
Christof Schmitt39eb7e92008-12-19 16:57:01 +0100934static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
935 struct scatterlist *sg_req,
Swen Schillig01b04752010-07-16 15:37:37 +0200936 struct scatterlist *sg_resp)
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200937{
Swen Schillig42428f72009-08-18 15:43:18 +0200938 struct zfcp_adapter *adapter = req->adapter;
Swen Schillig86a96682011-08-15 14:40:32 +0200939 struct zfcp_qdio *qdio = adapter->qdio;
940 struct fsf_qtcb *qtcb = req->qtcb;
Swen Schillig42428f72009-08-18 15:43:18 +0200941 u32 feat = adapter->adapter_features;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200942
Swen Schillig86a96682011-08-15 14:40:32 +0200943 if (zfcp_adapter_multi_buffer_active(adapter)) {
944 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
945 return -EIO;
946 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
947 return -EIO;
Christof Schmitt39eb7e92008-12-19 16:57:01 +0100948
Swen Schillig86a96682011-08-15 14:40:32 +0200949 zfcp_qdio_set_data_div(qdio, &req->qdio_req,
950 zfcp_qdio_sbale_count(sg_req));
951 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
952 zfcp_qdio_set_scount(qdio, &req->qdio_req);
Christof Schmitt426f6052009-07-13 15:06:06 +0200953 return 0;
954 }
955
956 /* use single, unchained SBAL if it can hold the request */
Swen Schillig30b67772010-06-21 10:11:31 +0200957 if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
Swen Schillig86a96682011-08-15 14:40:32 +0200958 zfcp_fsf_setup_ct_els_unchained(qdio, &req->qdio_req,
Christof Schmitt1674b402010-04-30 18:09:34 +0200959 sg_req, sg_resp);
Christof Schmitt39eb7e92008-12-19 16:57:01 +0100960 return 0;
961 }
962
Swen Schillig86a96682011-08-15 14:40:32 +0200963 if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS))
964 return -EOPNOTSUPP;
Swen Schilligc41f8cb2008-07-02 10:56:39 +0200965
Swen Schillig86a96682011-08-15 14:40:32 +0200966 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
Christof Schmitt9072df42009-07-13 15:06:07 +0200967 return -EIO;
Swen Schillig86a96682011-08-15 14:40:32 +0200968
969 qtcb->bottom.support.req_buf_length = zfcp_qdio_real_bytes(sg_req);
970
971 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
972 zfcp_qdio_skip_to_last_sbale(qdio, &req->qdio_req);
973
974 if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
975 return -EIO;
976
977 qtcb->bottom.support.resp_buf_length = zfcp_qdio_real_bytes(sg_resp);
978
979 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Christof Schmitt98fc4d52009-08-18 15:43:26 +0200980
Christof Schmittb1a58982009-09-24 10:23:21 +0200981 return 0;
982}
983
984static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
985 struct scatterlist *sg_req,
986 struct scatterlist *sg_resp,
Swen Schillig01b04752010-07-16 15:37:37 +0200987 unsigned int timeout)
Christof Schmittb1a58982009-09-24 10:23:21 +0200988{
989 int ret;
990
Swen Schillig01b04752010-07-16 15:37:37 +0200991 ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp);
Christof Schmittb1a58982009-09-24 10:23:21 +0200992 if (ret)
993 return ret;
994
Christof Schmitt98fc4d52009-08-18 15:43:26 +0200995 /* common settings for ct/gs and els requests */
Swen Schillig51375ee2010-01-14 17:19:02 +0100996 if (timeout > 255)
997 timeout = 255; /* max value accepted by hardware */
Christof Schmitt98fc4d52009-08-18 15:43:26 +0200998 req->qtcb->bottom.support.service_class = FSF_CLASS_3;
Swen Schillig51375ee2010-01-14 17:19:02 +0100999 req->qtcb->bottom.support.timeout = timeout;
1000 zfcp_fsf_start_timer(req, (timeout + 10) * HZ);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001001
1002 return 0;
1003}
1004
1005/**
1006 * zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
1007 * @ct: pointer to struct zfcp_send_ct with data for request
1008 * @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001009 */
Christof Schmitt7c7dc192009-11-24 16:54:13 +01001010int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
Swen Schillig51375ee2010-01-14 17:19:02 +01001011 struct zfcp_fsf_ct_els *ct, mempool_t *pool,
1012 unsigned int timeout)
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001013{
Swen Schillig564e1c82009-08-18 15:43:19 +02001014 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001015 struct zfcp_fsf_req *req;
1016 int ret = -EIO;
1017
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001018 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02001019 if (zfcp_qdio_sbal_get(qdio))
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001020 goto out;
1021
Christof Schmitt1674b402010-04-30 18:09:34 +02001022 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
Jan Glauber3ec90872011-06-06 14:14:40 +02001023 SBAL_SFLAGS0_TYPE_WRITE_READ, pool);
Swen Schillig09a46c62009-08-18 15:43:16 +02001024
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +02001025 if (IS_ERR(req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001026 ret = PTR_ERR(req);
1027 goto out;
1028 }
1029
Swen Schillig09a46c62009-08-18 15:43:16 +02001030 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
Swen Schillig01b04752010-07-16 15:37:37 +02001031 ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001032 if (ret)
1033 goto failed_send;
1034
1035 req->handler = zfcp_fsf_send_ct_handler;
Swen Schillig5ab944f2008-10-01 12:42:17 +02001036 req->qtcb->header.port_handle = wka_port->handle;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001037 req->data = ct;
1038
Swen Schillig2c55b752010-12-02 15:16:13 +01001039 zfcp_dbf_san_req("fssct_1", req, wka_port->d_id);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001040
1041 ret = zfcp_fsf_req_send(req);
1042 if (ret)
1043 goto failed_send;
1044
1045 goto out;
1046
1047failed_send:
1048 zfcp_fsf_req_free(req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001049out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001050 spin_unlock_irq(&qdio->req_q_lock);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001051 return ret;
1052}
1053
1054static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
1055{
Christof Schmitt7c7dc192009-11-24 16:54:13 +01001056 struct zfcp_fsf_ct_els *send_els = req->data;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001057 struct zfcp_port *port = send_els->port;
1058 struct fsf_qtcb_header *header = &req->qtcb->header;
1059
1060 send_els->status = -EINVAL;
1061
1062 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1063 goto skip_fsfstatus;
1064
1065 switch (header->fsf_status) {
1066 case FSF_GOOD:
Swen Schillig2c55b752010-12-02 15:16:13 +01001067 zfcp_dbf_san_res("fsselh1", req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001068 send_els->status = 0;
1069 break;
1070 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
1071 zfcp_fsf_class_not_supp(req);
1072 break;
1073 case FSF_ADAPTER_STATUS_AVAILABLE:
1074 switch (header->fsf_status_qual.word[0]){
1075 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001076 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1077 case FSF_SQ_RETRY_IF_POSSIBLE:
1078 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1079 break;
1080 }
1081 break;
1082 case FSF_ELS_COMMAND_REJECTED:
1083 case FSF_PAYLOAD_SIZE_MISMATCH:
1084 case FSF_REQUEST_SIZE_TOO_LARGE:
1085 case FSF_RESPONSE_SIZE_TOO_LARGE:
1086 break;
1087 case FSF_ACCESS_DENIED:
Christof Schmitta1ca4832010-09-08 14:39:59 +02001088 if (port) {
1089 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1090 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1091 }
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001092 break;
1093 case FSF_SBAL_MISMATCH:
Lucas De Marchi25985ed2011-03-30 22:57:33 -03001094 /* should never occur, avoided in zfcp_fsf_send_els */
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001095 /* fall through */
1096 default:
1097 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1098 break;
1099 }
1100skip_fsfstatus:
1101 if (send_els->handler)
1102 send_els->handler(send_els->handler_data);
1103}
1104
1105/**
1106 * zfcp_fsf_send_els - initiate an ELS command (FC-FS)
1107 * @els: pointer to struct zfcp_send_els with data for the command
1108 */
Christof Schmitt7c7dc192009-11-24 16:54:13 +01001109int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
Swen Schillig51375ee2010-01-14 17:19:02 +01001110 struct zfcp_fsf_ct_els *els, unsigned int timeout)
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001111{
1112 struct zfcp_fsf_req *req;
Christof Schmitt7c7dc192009-11-24 16:54:13 +01001113 struct zfcp_qdio *qdio = adapter->qdio;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001114 int ret = -EIO;
1115
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001116 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02001117 if (zfcp_qdio_sbal_get(qdio))
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001118 goto out;
Swen Schillig09a46c62009-08-18 15:43:16 +02001119
Christof Schmitt1674b402010-04-30 18:09:34 +02001120 req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
Jan Glauber3ec90872011-06-06 14:14:40 +02001121 SBAL_SFLAGS0_TYPE_WRITE_READ, NULL);
Swen Schillig09a46c62009-08-18 15:43:16 +02001122
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +02001123 if (IS_ERR(req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001124 ret = PTR_ERR(req);
1125 goto out;
1126 }
1127
Swen Schillig09a46c62009-08-18 15:43:16 +02001128 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
Swen Schillig01b04752010-07-16 15:37:37 +02001129
Swen Schillig86a96682011-08-15 14:40:32 +02001130 if (!zfcp_adapter_multi_buffer_active(adapter))
1131 zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2);
Swen Schillig01b04752010-07-16 15:37:37 +02001132
1133 ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout);
Swen Schillig44cc76f2008-10-01 12:42:16 +02001134
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001135 if (ret)
1136 goto failed_send;
1137
Christof Schmitt7c7dc192009-11-24 16:54:13 +01001138 hton24(req->qtcb->bottom.support.d_id, d_id);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001139 req->handler = zfcp_fsf_send_els_handler;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001140 req->data = els;
1141
Swen Schillig2c55b752010-12-02 15:16:13 +01001142 zfcp_dbf_san_req("fssels1", req, d_id);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001143
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001144 ret = zfcp_fsf_req_send(req);
1145 if (ret)
1146 goto failed_send;
1147
1148 goto out;
1149
1150failed_send:
1151 zfcp_fsf_req_free(req);
1152out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001153 spin_unlock_irq(&qdio->req_q_lock);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001154 return ret;
1155}
1156
1157int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
1158{
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001159 struct zfcp_fsf_req *req;
Swen Schillig564e1c82009-08-18 15:43:19 +02001160 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001161 int retval = -EIO;
1162
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001163 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02001164 if (zfcp_qdio_sbal_get(qdio))
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001165 goto out;
Swen Schillig09a46c62009-08-18 15:43:16 +02001166
Swen Schillig564e1c82009-08-18 15:43:19 +02001167 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
Jan Glauber3ec90872011-06-06 14:14:40 +02001168 SBAL_SFLAGS0_TYPE_READ,
Swen Schillig564e1c82009-08-18 15:43:19 +02001169 qdio->adapter->pool.erp_req);
Swen Schillig09a46c62009-08-18 15:43:16 +02001170
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +02001171 if (IS_ERR(req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001172 retval = PTR_ERR(req);
1173 goto out;
1174 }
1175
Swen Schillig09a46c62009-08-18 15:43:16 +02001176 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
Christof Schmitt1674b402010-04-30 18:09:34 +02001177 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001178
1179 req->qtcb->bottom.config.feature_selection =
1180 FSF_FEATURE_CFDC |
1181 FSF_FEATURE_LUN_SHARING |
1182 FSF_FEATURE_NOTIFICATION_LOST |
1183 FSF_FEATURE_UPDATE_ALERT;
1184 req->erp_action = erp_action;
1185 req->handler = zfcp_fsf_exchange_config_data_handler;
Christof Schmitte60a6d62010-02-17 11:18:49 +01001186 erp_action->fsf_req_id = req->req_id;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001187
Christof Schmitt287ac012008-07-02 10:56:40 +02001188 zfcp_fsf_start_erp_timer(req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001189 retval = zfcp_fsf_req_send(req);
1190 if (retval) {
1191 zfcp_fsf_req_free(req);
Christof Schmitte60a6d62010-02-17 11:18:49 +01001192 erp_action->fsf_req_id = 0;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001193 }
1194out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001195 spin_unlock_irq(&qdio->req_q_lock);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001196 return retval;
1197}
1198
Swen Schillig564e1c82009-08-18 15:43:19 +02001199int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001200 struct fsf_qtcb_bottom_config *data)
1201{
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001202 struct zfcp_fsf_req *req = NULL;
1203 int retval = -EIO;
1204
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001205 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02001206 if (zfcp_qdio_sbal_get(qdio))
Christof Schmittada81b72009-04-17 15:08:03 +02001207 goto out_unlock;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001208
Christof Schmitt1674b402010-04-30 18:09:34 +02001209 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
Jan Glauber3ec90872011-06-06 14:14:40 +02001210 SBAL_SFLAGS0_TYPE_READ, NULL);
Swen Schillig09a46c62009-08-18 15:43:16 +02001211
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +02001212 if (IS_ERR(req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001213 retval = PTR_ERR(req);
Christof Schmittada81b72009-04-17 15:08:03 +02001214 goto out_unlock;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001215 }
1216
Christof Schmitt1674b402010-04-30 18:09:34 +02001217 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001218 req->handler = zfcp_fsf_exchange_config_data_handler;
1219
1220 req->qtcb->bottom.config.feature_selection =
1221 FSF_FEATURE_CFDC |
1222 FSF_FEATURE_LUN_SHARING |
1223 FSF_FEATURE_NOTIFICATION_LOST |
1224 FSF_FEATURE_UPDATE_ALERT;
1225
1226 if (data)
1227 req->data = data;
1228
1229 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1230 retval = zfcp_fsf_req_send(req);
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001231 spin_unlock_irq(&qdio->req_q_lock);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001232 if (!retval)
Swen Schillig058b8642009-08-18 15:43:14 +02001233 wait_for_completion(&req->completion);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001234
1235 zfcp_fsf_req_free(req);
Christof Schmittada81b72009-04-17 15:08:03 +02001236 return retval;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001237
Christof Schmittada81b72009-04-17 15:08:03 +02001238out_unlock:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001239 spin_unlock_irq(&qdio->req_q_lock);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001240 return retval;
1241}
1242
1243/**
1244 * zfcp_fsf_exchange_port_data - request information about local port
1245 * @erp_action: ERP action for the adapter for which port data is requested
1246 * Returns: 0 on success, error otherwise
1247 */
1248int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
1249{
Swen Schillig564e1c82009-08-18 15:43:19 +02001250 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001251 struct zfcp_fsf_req *req;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001252 int retval = -EIO;
1253
Swen Schillig564e1c82009-08-18 15:43:19 +02001254 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001255 return -EOPNOTSUPP;
1256
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001257 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02001258 if (zfcp_qdio_sbal_get(qdio))
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001259 goto out;
Swen Schillig09a46c62009-08-18 15:43:16 +02001260
Swen Schillig564e1c82009-08-18 15:43:19 +02001261 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
Jan Glauber3ec90872011-06-06 14:14:40 +02001262 SBAL_SFLAGS0_TYPE_READ,
Swen Schillig564e1c82009-08-18 15:43:19 +02001263 qdio->adapter->pool.erp_req);
Swen Schillig09a46c62009-08-18 15:43:16 +02001264
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +02001265 if (IS_ERR(req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001266 retval = PTR_ERR(req);
1267 goto out;
1268 }
1269
Swen Schillig09a46c62009-08-18 15:43:16 +02001270 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
Christof Schmitt1674b402010-04-30 18:09:34 +02001271 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001272
1273 req->handler = zfcp_fsf_exchange_port_data_handler;
1274 req->erp_action = erp_action;
Christof Schmitte60a6d62010-02-17 11:18:49 +01001275 erp_action->fsf_req_id = req->req_id;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001276
Christof Schmitt287ac012008-07-02 10:56:40 +02001277 zfcp_fsf_start_erp_timer(req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001278 retval = zfcp_fsf_req_send(req);
1279 if (retval) {
1280 zfcp_fsf_req_free(req);
Christof Schmitte60a6d62010-02-17 11:18:49 +01001281 erp_action->fsf_req_id = 0;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001282 }
1283out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001284 spin_unlock_irq(&qdio->req_q_lock);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001285 return retval;
1286}
1287
1288/**
1289 * zfcp_fsf_exchange_port_data_sync - request information about local port
Swen Schillig564e1c82009-08-18 15:43:19 +02001290 * @qdio: pointer to struct zfcp_qdio
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001291 * @data: pointer to struct fsf_qtcb_bottom_port
1292 * Returns: 0 on success, error otherwise
1293 */
Swen Schillig564e1c82009-08-18 15:43:19 +02001294int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001295 struct fsf_qtcb_bottom_port *data)
1296{
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001297 struct zfcp_fsf_req *req = NULL;
1298 int retval = -EIO;
1299
Swen Schillig564e1c82009-08-18 15:43:19 +02001300 if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001301 return -EOPNOTSUPP;
1302
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001303 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02001304 if (zfcp_qdio_sbal_get(qdio))
Christof Schmittada81b72009-04-17 15:08:03 +02001305 goto out_unlock;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001306
Christof Schmitt1674b402010-04-30 18:09:34 +02001307 req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
Jan Glauber3ec90872011-06-06 14:14:40 +02001308 SBAL_SFLAGS0_TYPE_READ, NULL);
Swen Schillig09a46c62009-08-18 15:43:16 +02001309
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +02001310 if (IS_ERR(req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001311 retval = PTR_ERR(req);
Christof Schmittada81b72009-04-17 15:08:03 +02001312 goto out_unlock;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001313 }
1314
1315 if (data)
1316 req->data = data;
1317
Christof Schmitt1674b402010-04-30 18:09:34 +02001318 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001319
1320 req->handler = zfcp_fsf_exchange_port_data_handler;
1321 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1322 retval = zfcp_fsf_req_send(req);
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001323 spin_unlock_irq(&qdio->req_q_lock);
Christof Schmittada81b72009-04-17 15:08:03 +02001324
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001325 if (!retval)
Swen Schillig058b8642009-08-18 15:43:14 +02001326 wait_for_completion(&req->completion);
1327
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001328 zfcp_fsf_req_free(req);
1329
1330 return retval;
Christof Schmittada81b72009-04-17 15:08:03 +02001331
1332out_unlock:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001333 spin_unlock_irq(&qdio->req_q_lock);
Christof Schmittada81b72009-04-17 15:08:03 +02001334 return retval;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001335}
1336
1337static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
1338{
1339 struct zfcp_port *port = req->data;
1340 struct fsf_qtcb_header *header = &req->qtcb->header;
Christof Schmitt9d05ce22009-11-24 16:54:09 +01001341 struct fc_els_flogi *plogi;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001342
1343 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
Martin Petermanna17c5852009-05-15 13:18:19 +02001344 goto out;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001345
1346 switch (header->fsf_status) {
1347 case FSF_PORT_ALREADY_OPEN:
1348 break;
1349 case FSF_ACCESS_DENIED:
Christof Schmitta1ca4832010-09-08 14:39:59 +02001350 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
1351 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001352 break;
1353 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1354 dev_warn(&req->adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +02001355 "Not enough FCP adapter resources to open "
Swen Schillig7ba58c92008-10-01 12:42:18 +02001356 "remote port 0x%016Lx\n",
1357 (unsigned long long)port->wwpn);
Swen Schilligedaed8592010-09-08 14:40:01 +02001358 zfcp_erp_set_port_status(port,
1359 ZFCP_STATUS_COMMON_ERP_FAILED);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001360 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1361 break;
1362 case FSF_ADAPTER_STATUS_AVAILABLE:
1363 switch (header->fsf_status_qual.word[0]) {
1364 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
1365 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001366 case FSF_SQ_NO_RETRY_POSSIBLE:
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001367 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1368 break;
1369 }
1370 break;
1371 case FSF_GOOD:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001372 port->handle = header->port_handle;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
1374 ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
Andreas Herrmannd736a272005-06-13 13:23:57 +02001375 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
1376 ZFCP_STATUS_COMMON_ACCESS_BOXED,
1377 &port->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001378 /* check whether D_ID has changed during open */
1379 /*
1380 * FIXME: This check is not airtight, as the FCP channel does
1381 * not monitor closures of target port connections caused on
1382 * the remote side. Thus, they might miss out on invalidating
1383 * locally cached WWPNs (and other N_Port parameters) of gone
1384 * target ports. So, our heroic attempt to make things safe
1385 * could be undermined by 'open port' response data tagged with
1386 * obsolete WWPNs. Another reason to monitor potential
1387 * connection closures ourself at least (by interpreting
1388 * incoming ELS' and unsolicited status). It just crosses my
1389 * mind that one should be able to cross-check by means of
1390 * another GID_PN straight after a port has been opened.
1391 * Alternately, an ADISC/PDISC ELS should suffice, as well.
1392 */
Christof Schmitt9d05ce22009-11-24 16:54:09 +01001393 plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
Christof Schmitt39eb7e92008-12-19 16:57:01 +01001394 if (req->qtcb->bottom.support.els1_length >=
Christof Schmitt9d05ce22009-11-24 16:54:09 +01001395 FSF_PLOGI_MIN_LEN)
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001396 zfcp_fc_plogi_evaluate(port, plogi);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001397 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001398 case FSF_UNKNOWN_OP_SUBTYPE:
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001399 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001400 break;
1401 }
Martin Petermanna17c5852009-05-15 13:18:19 +02001402
1403out:
Christof Schmitt615f59e2010-02-17 11:18:56 +01001404 put_device(&port->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001405}
1406
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001407/**
1408 * zfcp_fsf_open_port - create and send open port request
1409 * @erp_action: pointer to struct zfcp_erp_action
1410 * Returns: 0 on success, error otherwise
Linus Torvalds1da177e2005-04-16 15:20:36 -07001411 */
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001412int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001413{
Swen Schillig564e1c82009-08-18 15:43:19 +02001414 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
Martin Petermanna17c5852009-05-15 13:18:19 +02001415 struct zfcp_port *port = erp_action->port;
Swen Schillig564e1c82009-08-18 15:43:19 +02001416 struct zfcp_fsf_req *req;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001417 int retval = -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001419 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02001420 if (zfcp_qdio_sbal_get(qdio))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001422
Swen Schillig564e1c82009-08-18 15:43:19 +02001423 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
Jan Glauber3ec90872011-06-06 14:14:40 +02001424 SBAL_SFLAGS0_TYPE_READ,
Swen Schillig564e1c82009-08-18 15:43:19 +02001425 qdio->adapter->pool.erp_req);
Swen Schillig09a46c62009-08-18 15:43:16 +02001426
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +02001427 if (IS_ERR(req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001428 retval = PTR_ERR(req);
1429 goto out;
1430 }
1431
Swen Schillig09a46c62009-08-18 15:43:16 +02001432 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
Christof Schmitt1674b402010-04-30 18:09:34 +02001433 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001434
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001435 req->handler = zfcp_fsf_open_port_handler;
Christof Schmitt800c0ca2009-11-24 16:54:12 +01001436 hton24(req->qtcb->bottom.support.d_id, port->d_id);
Martin Petermanna17c5852009-05-15 13:18:19 +02001437 req->data = port;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001438 req->erp_action = erp_action;
Christof Schmitte60a6d62010-02-17 11:18:49 +01001439 erp_action->fsf_req_id = req->req_id;
Christof Schmitt615f59e2010-02-17 11:18:56 +01001440 get_device(&port->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001441
Christof Schmitt287ac012008-07-02 10:56:40 +02001442 zfcp_fsf_start_erp_timer(req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001443 retval = zfcp_fsf_req_send(req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001444 if (retval) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001445 zfcp_fsf_req_free(req);
Christof Schmitte60a6d62010-02-17 11:18:49 +01001446 erp_action->fsf_req_id = 0;
Christof Schmitt615f59e2010-02-17 11:18:56 +01001447 put_device(&port->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001448 }
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001449out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001450 spin_unlock_irq(&qdio->req_q_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001451 return retval;
1452}
1453
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001454static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001455{
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001456 struct zfcp_port *port = req->data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001457
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001458 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
Swen Schillig44cc76f2008-10-01 12:42:16 +02001459 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001460
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001461 switch (req->qtcb->header.fsf_status) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001462 case FSF_PORT_HANDLE_NOT_VALID:
Swen Schilligea4a3a62010-12-02 15:16:16 +01001463 zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1");
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001464 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001465 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001466 case FSF_ADAPTER_STATUS_AVAILABLE:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001467 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001468 case FSF_GOOD:
Swen Schilligedaed8592010-09-08 14:40:01 +02001469 zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001471 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001472}
1473
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001474/**
1475 * zfcp_fsf_close_port - create and send close port request
1476 * @erp_action: pointer to struct zfcp_erp_action
1477 * Returns: 0 on success, error otherwise
Linus Torvalds1da177e2005-04-16 15:20:36 -07001478 */
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001479int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480{
Swen Schillig564e1c82009-08-18 15:43:19 +02001481 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001482 struct zfcp_fsf_req *req;
1483 int retval = -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001484
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001485 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02001486 if (zfcp_qdio_sbal_get(qdio))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001487 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001488
Swen Schillig564e1c82009-08-18 15:43:19 +02001489 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
Jan Glauber3ec90872011-06-06 14:14:40 +02001490 SBAL_SFLAGS0_TYPE_READ,
Swen Schillig564e1c82009-08-18 15:43:19 +02001491 qdio->adapter->pool.erp_req);
Swen Schillig09a46c62009-08-18 15:43:16 +02001492
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +02001493 if (IS_ERR(req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001494 retval = PTR_ERR(req);
1495 goto out;
1496 }
1497
Swen Schillig09a46c62009-08-18 15:43:16 +02001498 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
Christof Schmitt1674b402010-04-30 18:09:34 +02001499 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001500
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001501 req->handler = zfcp_fsf_close_port_handler;
1502 req->data = erp_action->port;
1503 req->erp_action = erp_action;
1504 req->qtcb->header.port_handle = erp_action->port->handle;
Christof Schmitte60a6d62010-02-17 11:18:49 +01001505 erp_action->fsf_req_id = req->req_id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001506
Christof Schmitt287ac012008-07-02 10:56:40 +02001507 zfcp_fsf_start_erp_timer(req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001508 retval = zfcp_fsf_req_send(req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001509 if (retval) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001510 zfcp_fsf_req_free(req);
Christof Schmitte60a6d62010-02-17 11:18:49 +01001511 erp_action->fsf_req_id = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001512 }
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001513out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001514 spin_unlock_irq(&qdio->req_q_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001515 return retval;
1516}
1517
Swen Schillig5ab944f2008-10-01 12:42:17 +02001518static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
1519{
Christof Schmittbd0072e2009-11-24 16:54:11 +01001520 struct zfcp_fc_wka_port *wka_port = req->data;
Swen Schillig5ab944f2008-10-01 12:42:17 +02001521 struct fsf_qtcb_header *header = &req->qtcb->header;
1522
1523 if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
Christof Schmittbd0072e2009-11-24 16:54:11 +01001524 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
Swen Schillig5ab944f2008-10-01 12:42:17 +02001525 goto out;
1526 }
1527
1528 switch (header->fsf_status) {
1529 case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
1530 dev_warn(&req->adapter->ccw_device->dev,
1531 "Opening WKA port 0x%x failed\n", wka_port->d_id);
Christof Schmittdceab652009-05-15 13:18:18 +02001532 /* fall through */
Swen Schillig5ab944f2008-10-01 12:42:17 +02001533 case FSF_ADAPTER_STATUS_AVAILABLE:
1534 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Christof Schmittdceab652009-05-15 13:18:18 +02001535 /* fall through */
Swen Schillig5ab944f2008-10-01 12:42:17 +02001536 case FSF_ACCESS_DENIED:
Christof Schmittbd0072e2009-11-24 16:54:11 +01001537 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
Swen Schillig5ab944f2008-10-01 12:42:17 +02001538 break;
Swen Schillig5ab944f2008-10-01 12:42:17 +02001539 case FSF_GOOD:
1540 wka_port->handle = header->port_handle;
Swen Schillig27f492c2009-07-13 15:06:13 +02001541 /* fall through */
1542 case FSF_PORT_ALREADY_OPEN:
Christof Schmittbd0072e2009-11-24 16:54:11 +01001543 wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
Swen Schillig5ab944f2008-10-01 12:42:17 +02001544 }
1545out:
1546 wake_up(&wka_port->completion_wq);
1547}
1548
1549/**
1550 * zfcp_fsf_open_wka_port - create and send open wka-port request
Christof Schmittbd0072e2009-11-24 16:54:11 +01001551 * @wka_port: pointer to struct zfcp_fc_wka_port
Swen Schillig5ab944f2008-10-01 12:42:17 +02001552 * Returns: 0 on success, error otherwise
1553 */
Christof Schmittbd0072e2009-11-24 16:54:11 +01001554int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
Swen Schillig5ab944f2008-10-01 12:42:17 +02001555{
Swen Schillig564e1c82009-08-18 15:43:19 +02001556 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
Swen Schillig5ab944f2008-10-01 12:42:17 +02001557 struct zfcp_fsf_req *req;
1558 int retval = -EIO;
1559
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001560 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02001561 if (zfcp_qdio_sbal_get(qdio))
Swen Schillig5ab944f2008-10-01 12:42:17 +02001562 goto out;
1563
Swen Schillig564e1c82009-08-18 15:43:19 +02001564 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
Jan Glauber3ec90872011-06-06 14:14:40 +02001565 SBAL_SFLAGS0_TYPE_READ,
Swen Schillig564e1c82009-08-18 15:43:19 +02001566 qdio->adapter->pool.erp_req);
Swen Schillig09a46c62009-08-18 15:43:16 +02001567
Tobias Klauser4e7d7af2011-02-22 19:54:38 +01001568 if (IS_ERR(req)) {
Swen Schillig5ab944f2008-10-01 12:42:17 +02001569 retval = PTR_ERR(req);
1570 goto out;
1571 }
1572
Swen Schillig09a46c62009-08-18 15:43:16 +02001573 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
Christof Schmitt1674b402010-04-30 18:09:34 +02001574 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Swen Schillig5ab944f2008-10-01 12:42:17 +02001575
1576 req->handler = zfcp_fsf_open_wka_port_handler;
Christof Schmitt800c0ca2009-11-24 16:54:12 +01001577 hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
Swen Schillig5ab944f2008-10-01 12:42:17 +02001578 req->data = wka_port;
1579
1580 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1581 retval = zfcp_fsf_req_send(req);
1582 if (retval)
1583 zfcp_fsf_req_free(req);
1584out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001585 spin_unlock_irq(&qdio->req_q_lock);
Swen Schillig5ab944f2008-10-01 12:42:17 +02001586 return retval;
1587}
1588
1589static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
1590{
Christof Schmittbd0072e2009-11-24 16:54:11 +01001591 struct zfcp_fc_wka_port *wka_port = req->data;
Swen Schillig5ab944f2008-10-01 12:42:17 +02001592
1593 if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
1594 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Swen Schilligea4a3a62010-12-02 15:16:16 +01001595 zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1");
Swen Schillig5ab944f2008-10-01 12:42:17 +02001596 }
1597
Christof Schmittbd0072e2009-11-24 16:54:11 +01001598 wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
Swen Schillig5ab944f2008-10-01 12:42:17 +02001599 wake_up(&wka_port->completion_wq);
1600}
1601
1602/**
1603 * zfcp_fsf_close_wka_port - create and send close wka port request
Christof Schmittbd0072e2009-11-24 16:54:11 +01001604 * @wka_port: WKA port to open
Swen Schillig5ab944f2008-10-01 12:42:17 +02001605 * Returns: 0 on success, error otherwise
1606 */
Christof Schmittbd0072e2009-11-24 16:54:11 +01001607int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
Swen Schillig5ab944f2008-10-01 12:42:17 +02001608{
Swen Schillig564e1c82009-08-18 15:43:19 +02001609 struct zfcp_qdio *qdio = wka_port->adapter->qdio;
Swen Schillig5ab944f2008-10-01 12:42:17 +02001610 struct zfcp_fsf_req *req;
1611 int retval = -EIO;
1612
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001613 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02001614 if (zfcp_qdio_sbal_get(qdio))
Swen Schillig5ab944f2008-10-01 12:42:17 +02001615 goto out;
1616
Swen Schillig564e1c82009-08-18 15:43:19 +02001617 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
Jan Glauber3ec90872011-06-06 14:14:40 +02001618 SBAL_SFLAGS0_TYPE_READ,
Swen Schillig564e1c82009-08-18 15:43:19 +02001619 qdio->adapter->pool.erp_req);
Swen Schillig09a46c62009-08-18 15:43:16 +02001620
Tobias Klauser4e7d7af2011-02-22 19:54:38 +01001621 if (IS_ERR(req)) {
Swen Schillig5ab944f2008-10-01 12:42:17 +02001622 retval = PTR_ERR(req);
1623 goto out;
1624 }
1625
Swen Schillig09a46c62009-08-18 15:43:16 +02001626 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
Christof Schmitt1674b402010-04-30 18:09:34 +02001627 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Swen Schillig5ab944f2008-10-01 12:42:17 +02001628
1629 req->handler = zfcp_fsf_close_wka_port_handler;
1630 req->data = wka_port;
1631 req->qtcb->header.port_handle = wka_port->handle;
1632
1633 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
1634 retval = zfcp_fsf_req_send(req);
1635 if (retval)
1636 zfcp_fsf_req_free(req);
1637out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001638 spin_unlock_irq(&qdio->req_q_lock);
Swen Schillig5ab944f2008-10-01 12:42:17 +02001639 return retval;
1640}
1641
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001642static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001643{
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001644 struct zfcp_port *port = req->data;
1645 struct fsf_qtcb_header *header = &req->qtcb->header;
Christof Schmittb62a8d92010-09-08 14:39:55 +02001646 struct scsi_device *sdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001647
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001648 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
Christof Schmitta5b11dd2009-03-02 13:08:54 +01001649 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001650
Linus Torvalds1da177e2005-04-16 15:20:36 -07001651 switch (header->fsf_status) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001652 case FSF_PORT_HANDLE_NOT_VALID:
Swen Schilligea4a3a62010-12-02 15:16:16 +01001653 zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1");
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001654 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001655 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001656 case FSF_ACCESS_DENIED:
Christof Schmitta1ca4832010-09-08 14:39:59 +02001657 zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001658 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001659 case FSF_PORT_BOXED:
Christof Schmitt5c815d12008-03-10 16:18:54 +01001660 /* can't use generic zfcp_erp_modify_port_status because
1661 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
1662 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
Christof Schmittb62a8d92010-09-08 14:39:55 +02001663 shost_for_each_device(sdev, port->adapter->scsi_host)
1664 if (sdev_to_zfcp(sdev)->port == port)
1665 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1666 &sdev_to_zfcp(sdev)->status);
Swen Schilligedaed8592010-09-08 14:40:01 +02001667 zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED);
1668 zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
Swen Schilligea4a3a62010-12-02 15:16:16 +01001669 "fscpph2");
Christof Schmitt4c571c62009-11-24 16:54:15 +01001670 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001671 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001672 case FSF_ADAPTER_STATUS_AVAILABLE:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001673 switch (header->fsf_status_qual.word[0]) {
1674 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001675 /* fall through */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001676 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001677 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001678 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001679 }
1680 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001681 case FSF_GOOD:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001682 /* can't use generic zfcp_erp_modify_port_status because
1683 * ZFCP_STATUS_COMMON_OPEN must not be reset for the port
1684 */
1685 atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
Christof Schmittb62a8d92010-09-08 14:39:55 +02001686 shost_for_each_device(sdev, port->adapter->scsi_host)
1687 if (sdev_to_zfcp(sdev)->port == port)
1688 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
1689 &sdev_to_zfcp(sdev)->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001690 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001691 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001692}
1693
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001694/**
1695 * zfcp_fsf_close_physical_port - close physical port
1696 * @erp_action: pointer to struct zfcp_erp_action
1697 * Returns: 0 on success
Linus Torvalds1da177e2005-04-16 15:20:36 -07001698 */
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001699int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001700{
Swen Schillig564e1c82009-08-18 15:43:19 +02001701 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001702 struct zfcp_fsf_req *req;
1703 int retval = -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001704
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001705 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02001706 if (zfcp_qdio_sbal_get(qdio))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001707 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001708
Swen Schillig564e1c82009-08-18 15:43:19 +02001709 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
Jan Glauber3ec90872011-06-06 14:14:40 +02001710 SBAL_SFLAGS0_TYPE_READ,
Swen Schillig564e1c82009-08-18 15:43:19 +02001711 qdio->adapter->pool.erp_req);
Swen Schillig09a46c62009-08-18 15:43:16 +02001712
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +02001713 if (IS_ERR(req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001714 retval = PTR_ERR(req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715 goto out;
1716 }
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001717
Swen Schillig09a46c62009-08-18 15:43:16 +02001718 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
Christof Schmitt1674b402010-04-30 18:09:34 +02001719 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001720
1721 req->data = erp_action->port;
1722 req->qtcb->header.port_handle = erp_action->port->handle;
1723 req->erp_action = erp_action;
1724 req->handler = zfcp_fsf_close_physical_port_handler;
Christof Schmitte60a6d62010-02-17 11:18:49 +01001725 erp_action->fsf_req_id = req->req_id;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001726
Christof Schmitt287ac012008-07-02 10:56:40 +02001727 zfcp_fsf_start_erp_timer(req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001728 retval = zfcp_fsf_req_send(req);
1729 if (retval) {
1730 zfcp_fsf_req_free(req);
Christof Schmitte60a6d62010-02-17 11:18:49 +01001731 erp_action->fsf_req_id = 0;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001732 }
1733out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001734 spin_unlock_irq(&qdio->req_q_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001735 return retval;
1736}
1737
Christof Schmittb62a8d92010-09-08 14:39:55 +02001738static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001739{
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001740 struct zfcp_adapter *adapter = req->adapter;
Christof Schmittb62a8d92010-09-08 14:39:55 +02001741 struct scsi_device *sdev = req->data;
1742 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001743 struct fsf_qtcb_header *header = &req->qtcb->header;
1744 struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001745
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001746 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
Swen Schillig44cc76f2008-10-01 12:42:16 +02001747 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001748
Linus Torvalds1da177e2005-04-16 15:20:36 -07001749 atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
Heiko Carstensb64ddf92007-05-08 11:19:57 +02001750 ZFCP_STATUS_COMMON_ACCESS_BOXED |
Christof Schmittb62a8d92010-09-08 14:39:55 +02001751 ZFCP_STATUS_LUN_SHARED |
1752 ZFCP_STATUS_LUN_READONLY,
1753 &zfcp_sdev->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001754
Linus Torvalds1da177e2005-04-16 15:20:36 -07001755 switch (header->fsf_status) {
1756
1757 case FSF_PORT_HANDLE_NOT_VALID:
Swen Schilligea4a3a62010-12-02 15:16:16 +01001758 zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1");
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001759 /* fall through */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001760 case FSF_LUN_ALREADY_OPEN:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001761 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001762 case FSF_ACCESS_DENIED:
Christof Schmitta1ca4832010-09-08 14:39:59 +02001763 zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
1764 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001765 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766 case FSF_PORT_BOXED:
Swen Schilligedaed8592010-09-08 14:40:01 +02001767 zfcp_erp_set_port_status(zfcp_sdev->port,
1768 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1769 zfcp_erp_port_reopen(zfcp_sdev->port,
Swen Schilligea4a3a62010-12-02 15:16:16 +01001770 ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2");
Christof Schmitt4c571c62009-11-24 16:54:15 +01001771 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001772 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001773 case FSF_LUN_SHARING_VIOLATION:
Christof Schmitta1ca4832010-09-08 14:39:59 +02001774 zfcp_cfdc_lun_shrng_vltn(sdev, &header->fsf_status_qual);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001775 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001776 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001777 case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001778 dev_warn(&adapter->ccw_device->dev,
Christof Schmittff3b24f2008-10-01 12:42:15 +02001779 "No handle is available for LUN "
1780 "0x%016Lx on port 0x%016Lx\n",
Christof Schmittb62a8d92010-09-08 14:39:55 +02001781 (unsigned long long)zfcp_scsi_dev_lun(sdev),
1782 (unsigned long long)zfcp_sdev->port->wwpn);
Swen Schilligedaed8592010-09-08 14:40:01 +02001783 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001784 /* fall through */
1785 case FSF_INVALID_COMMAND_OPTION:
1786 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001787 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001788 case FSF_ADAPTER_STATUS_AVAILABLE:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001789 switch (header->fsf_status_qual.word[0]) {
1790 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
Christof Schmittb62a8d92010-09-08 14:39:55 +02001791 zfcp_fc_test_link(zfcp_sdev->port);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001792 /* fall through */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001793 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001794 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001795 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001796 }
1797 break;
1798
Linus Torvalds1da177e2005-04-16 15:20:36 -07001799 case FSF_GOOD:
Christof Schmittb62a8d92010-09-08 14:39:55 +02001800 zfcp_sdev->lun_handle = header->lun_handle;
1801 atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
Christof Schmitta1ca4832010-09-08 14:39:59 +02001802 zfcp_cfdc_open_lun_eval(sdev, bottom);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001803 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001804 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001805}
1806
1807/**
Christof Schmittb62a8d92010-09-08 14:39:55 +02001808 * zfcp_fsf_open_lun - open LUN
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001809 * @erp_action: pointer to struct zfcp_erp_action
1810 * Returns: 0 on success, error otherwise
Linus Torvalds1da177e2005-04-16 15:20:36 -07001811 */
Christof Schmittb62a8d92010-09-08 14:39:55 +02001812int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001813{
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001814 struct zfcp_adapter *adapter = erp_action->adapter;
Swen Schillig564e1c82009-08-18 15:43:19 +02001815 struct zfcp_qdio *qdio = adapter->qdio;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001816 struct zfcp_fsf_req *req;
1817 int retval = -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001818
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001819 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02001820 if (zfcp_qdio_sbal_get(qdio))
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001821 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001822
Swen Schillig564e1c82009-08-18 15:43:19 +02001823 req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
Jan Glauber3ec90872011-06-06 14:14:40 +02001824 SBAL_SFLAGS0_TYPE_READ,
Swen Schilliga4623c42009-08-18 15:43:15 +02001825 adapter->pool.erp_req);
Swen Schillig09a46c62009-08-18 15:43:16 +02001826
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +02001827 if (IS_ERR(req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001828 retval = PTR_ERR(req);
1829 goto out;
Christof Schmittba172422007-12-20 12:30:26 +01001830 }
1831
Swen Schillig09a46c62009-08-18 15:43:16 +02001832 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
Christof Schmitt1674b402010-04-30 18:09:34 +02001833 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001834
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001835 req->qtcb->header.port_handle = erp_action->port->handle;
Christof Schmittb62a8d92010-09-08 14:39:55 +02001836 req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev);
1837 req->handler = zfcp_fsf_open_lun_handler;
1838 req->data = erp_action->sdev;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001839 req->erp_action = erp_action;
Christof Schmitte60a6d62010-02-17 11:18:49 +01001840 erp_action->fsf_req_id = req->req_id;
Andreas Herrmann059c97d2005-09-13 21:47:52 +02001841
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001842 if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
1843 req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001844
Christof Schmitt287ac012008-07-02 10:56:40 +02001845 zfcp_fsf_start_erp_timer(req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001846 retval = zfcp_fsf_req_send(req);
1847 if (retval) {
1848 zfcp_fsf_req_free(req);
Christof Schmitte60a6d62010-02-17 11:18:49 +01001849 erp_action->fsf_req_id = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001850 }
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001851out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001852 spin_unlock_irq(&qdio->req_q_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001853 return retval;
1854}
1855
Christof Schmittb62a8d92010-09-08 14:39:55 +02001856static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001857{
Christof Schmittb62a8d92010-09-08 14:39:55 +02001858 struct scsi_device *sdev = req->data;
1859 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001860
1861 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
Swen Schillig44cc76f2008-10-01 12:42:16 +02001862 return;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001863
1864 switch (req->qtcb->header.fsf_status) {
1865 case FSF_PORT_HANDLE_NOT_VALID:
Swen Schilligea4a3a62010-12-02 15:16:16 +01001866 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1");
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001867 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1868 break;
1869 case FSF_LUN_HANDLE_NOT_VALID:
Swen Schilligea4a3a62010-12-02 15:16:16 +01001870 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2");
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001871 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1872 break;
1873 case FSF_PORT_BOXED:
Swen Schilligedaed8592010-09-08 14:40:01 +02001874 zfcp_erp_set_port_status(zfcp_sdev->port,
1875 ZFCP_STATUS_COMMON_ACCESS_BOXED);
1876 zfcp_erp_port_reopen(zfcp_sdev->port,
Swen Schilligea4a3a62010-12-02 15:16:16 +01001877 ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3");
Christof Schmitt4c571c62009-11-24 16:54:15 +01001878 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001879 break;
1880 case FSF_ADAPTER_STATUS_AVAILABLE:
1881 switch (req->qtcb->header.fsf_status_qual.word[0]) {
1882 case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
Christof Schmittb62a8d92010-09-08 14:39:55 +02001883 zfcp_fc_test_link(zfcp_sdev->port);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001884 /* fall through */
1885 case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
1886 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
1887 break;
1888 }
1889 break;
1890 case FSF_GOOD:
Christof Schmittb62a8d92010-09-08 14:39:55 +02001891 atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001892 break;
1893 }
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001894}
1895
1896/**
Christof Schmittb62a8d92010-09-08 14:39:55 +02001897 * zfcp_fsf_close_LUN - close LUN
1898 * @erp_action: pointer to erp_action triggering the "close LUN"
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001899 * Returns: 0 on success, error otherwise
1900 */
Christof Schmittb62a8d92010-09-08 14:39:55 +02001901int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001902{
Swen Schillig564e1c82009-08-18 15:43:19 +02001903 struct zfcp_qdio *qdio = erp_action->adapter->qdio;
Christof Schmittb62a8d92010-09-08 14:39:55 +02001904 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001905 struct zfcp_fsf_req *req;
1906 int retval = -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001907
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001908 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02001909 if (zfcp_qdio_sbal_get(qdio))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001910 goto out;
Swen Schillig09a46c62009-08-18 15:43:16 +02001911
Swen Schillig564e1c82009-08-18 15:43:19 +02001912 req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
Jan Glauber3ec90872011-06-06 14:14:40 +02001913 SBAL_SFLAGS0_TYPE_READ,
Swen Schillig564e1c82009-08-18 15:43:19 +02001914 qdio->adapter->pool.erp_req);
Swen Schillig09a46c62009-08-18 15:43:16 +02001915
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +02001916 if (IS_ERR(req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001917 retval = PTR_ERR(req);
1918 goto out;
1919 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001920
Swen Schillig09a46c62009-08-18 15:43:16 +02001921 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
Christof Schmitt1674b402010-04-30 18:09:34 +02001922 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001923
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001924 req->qtcb->header.port_handle = erp_action->port->handle;
Christof Schmittb62a8d92010-09-08 14:39:55 +02001925 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
1926 req->handler = zfcp_fsf_close_lun_handler;
1927 req->data = erp_action->sdev;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001928 req->erp_action = erp_action;
Christof Schmitte60a6d62010-02-17 11:18:49 +01001929 erp_action->fsf_req_id = req->req_id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001930
Christof Schmitt287ac012008-07-02 10:56:40 +02001931 zfcp_fsf_start_erp_timer(req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001932 retval = zfcp_fsf_req_send(req);
1933 if (retval) {
1934 zfcp_fsf_req_free(req);
Christof Schmitte60a6d62010-02-17 11:18:49 +01001935 erp_action->fsf_req_id = 0;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001936 }
1937out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02001938 spin_unlock_irq(&qdio->req_q_lock);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001939 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001940}
1941
Christof Schmittc9615852008-05-06 11:00:05 +02001942static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
1943{
1944 lat_rec->sum += lat;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02001945 lat_rec->min = min(lat_rec->min, lat);
1946 lat_rec->max = max(lat_rec->max, lat);
Christof Schmittc9615852008-05-06 11:00:05 +02001947}
1948
Christof Schmittd9742b42009-11-24 16:54:03 +01001949static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
Christof Schmittc9615852008-05-06 11:00:05 +02001950{
Christof Schmittd9742b42009-11-24 16:54:03 +01001951 struct fsf_qual_latency_info *lat_in;
1952 struct latency_cont *lat = NULL;
Christof Schmittb62a8d92010-09-08 14:39:55 +02001953 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scsi->device);
Christof Schmittd9742b42009-11-24 16:54:03 +01001954 struct zfcp_blk_drv_data blktrc;
1955 int ticks = req->adapter->timer_ticks;
Christof Schmittc9615852008-05-06 11:00:05 +02001956
Christof Schmittd9742b42009-11-24 16:54:03 +01001957 lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
Christof Schmittc9615852008-05-06 11:00:05 +02001958
Christof Schmittd9742b42009-11-24 16:54:03 +01001959 blktrc.flags = 0;
1960 blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
1961 if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
1962 blktrc.flags |= ZFCP_BLK_REQ_ERROR;
Swen Schillig706eca42010-07-16 15:37:38 +02001963 blktrc.inb_usage = 0;
Christof Schmitt34c2b712010-02-17 11:18:59 +01001964 blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
Christof Schmittd9742b42009-11-24 16:54:03 +01001965
Christof Schmitt5bbf2972010-04-01 13:04:08 +02001966 if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
1967 !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
Christof Schmittd9742b42009-11-24 16:54:03 +01001968 blktrc.flags |= ZFCP_BLK_LAT_VALID;
1969 blktrc.channel_lat = lat_in->channel_lat * ticks;
1970 blktrc.fabric_lat = lat_in->fabric_lat * ticks;
1971
1972 switch (req->qtcb->bottom.io.data_direction) {
Felix Beckef3eb712010-07-16 15:37:42 +02001973 case FSF_DATADIR_DIF_READ_STRIP:
1974 case FSF_DATADIR_DIF_READ_CONVERT:
Christof Schmittd9742b42009-11-24 16:54:03 +01001975 case FSF_DATADIR_READ:
Christof Schmittb62a8d92010-09-08 14:39:55 +02001976 lat = &zfcp_sdev->latencies.read;
Christof Schmittd9742b42009-11-24 16:54:03 +01001977 break;
Felix Beckef3eb712010-07-16 15:37:42 +02001978 case FSF_DATADIR_DIF_WRITE_INSERT:
1979 case FSF_DATADIR_DIF_WRITE_CONVERT:
Christof Schmittd9742b42009-11-24 16:54:03 +01001980 case FSF_DATADIR_WRITE:
Christof Schmittb62a8d92010-09-08 14:39:55 +02001981 lat = &zfcp_sdev->latencies.write;
Christof Schmittd9742b42009-11-24 16:54:03 +01001982 break;
1983 case FSF_DATADIR_CMND:
Christof Schmittb62a8d92010-09-08 14:39:55 +02001984 lat = &zfcp_sdev->latencies.cmd;
Christof Schmittd9742b42009-11-24 16:54:03 +01001985 break;
1986 }
1987
1988 if (lat) {
Christof Schmittb62a8d92010-09-08 14:39:55 +02001989 spin_lock(&zfcp_sdev->latencies.lock);
Christof Schmittd9742b42009-11-24 16:54:03 +01001990 zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
1991 zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
1992 lat->counter++;
Christof Schmittb62a8d92010-09-08 14:39:55 +02001993 spin_unlock(&zfcp_sdev->latencies.lock);
Christof Schmittd9742b42009-11-24 16:54:03 +01001994 }
Christof Schmittc9615852008-05-06 11:00:05 +02001995 }
1996
Christof Schmittd9742b42009-11-24 16:54:03 +01001997 blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
1998 sizeof(blktrc));
Christof Schmittc9615852008-05-06 11:00:05 +02001999}
2000
Christof Schmittc61b5362010-09-08 14:39:58 +02002001static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req)
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002002{
Christof Schmittb62a8d92010-09-08 14:39:55 +02002003 struct scsi_cmnd *scmnd = req->data;
2004 struct scsi_device *sdev = scmnd->device;
2005 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002006 struct fsf_qtcb_header *header = &req->qtcb->header;
2007
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002008 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
Christof Schmittc61b5362010-09-08 14:39:58 +02002009 return;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002010
2011 switch (header->fsf_status) {
2012 case FSF_HANDLE_MISMATCH:
2013 case FSF_PORT_HANDLE_NOT_VALID:
Swen Schilligea4a3a62010-12-02 15:16:16 +01002014 zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1");
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002015 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2016 break;
2017 case FSF_FCPLUN_NOT_VALID:
2018 case FSF_LUN_HANDLE_NOT_VALID:
Swen Schilligea4a3a62010-12-02 15:16:16 +01002019 zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2");
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002020 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2021 break;
2022 case FSF_SERVICE_CLASS_NOT_SUPPORTED:
2023 zfcp_fsf_class_not_supp(req);
2024 break;
2025 case FSF_ACCESS_DENIED:
Christof Schmitta1ca4832010-09-08 14:39:59 +02002026 zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
2027 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002028 break;
2029 case FSF_DIRECTION_INDICATOR_NOT_VALID:
2030 dev_err(&req->adapter->ccw_device->dev,
Christof Schmittb62a8d92010-09-08 14:39:55 +02002031 "Incorrect direction %d, LUN 0x%016Lx on port "
Christof Schmittff3b24f2008-10-01 12:42:15 +02002032 "0x%016Lx closed\n",
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002033 req->qtcb->bottom.io.data_direction,
Christof Schmittb62a8d92010-09-08 14:39:55 +02002034 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2035 (unsigned long long)zfcp_sdev->port->wwpn);
2036 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
Swen Schilligea4a3a62010-12-02 15:16:16 +01002037 "fssfch3");
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002038 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2039 break;
2040 case FSF_CMND_LENGTH_NOT_VALID:
2041 dev_err(&req->adapter->ccw_device->dev,
Christof Schmittb62a8d92010-09-08 14:39:55 +02002042 "Incorrect CDB length %d, LUN 0x%016Lx on "
Christof Schmittff3b24f2008-10-01 12:42:15 +02002043 "port 0x%016Lx closed\n",
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002044 req->qtcb->bottom.io.fcp_cmnd_length,
Christof Schmittb62a8d92010-09-08 14:39:55 +02002045 (unsigned long long)zfcp_scsi_dev_lun(sdev),
2046 (unsigned long long)zfcp_sdev->port->wwpn);
2047 zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
Swen Schilligea4a3a62010-12-02 15:16:16 +01002048 "fssfch4");
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002049 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2050 break;
2051 case FSF_PORT_BOXED:
Swen Schilligedaed8592010-09-08 14:40:01 +02002052 zfcp_erp_set_port_status(zfcp_sdev->port,
2053 ZFCP_STATUS_COMMON_ACCESS_BOXED);
2054 zfcp_erp_port_reopen(zfcp_sdev->port,
Swen Schilligea4a3a62010-12-02 15:16:16 +01002055 ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5");
Christof Schmitt4c571c62009-11-24 16:54:15 +01002056 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002057 break;
2058 case FSF_LUN_BOXED:
Swen Schilligedaed8592010-09-08 14:40:01 +02002059 zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
2060 zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
Swen Schilligea4a3a62010-12-02 15:16:16 +01002061 "fssfch6");
Christof Schmitt4c571c62009-11-24 16:54:15 +01002062 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002063 break;
2064 case FSF_ADAPTER_STATUS_AVAILABLE:
2065 if (header->fsf_status_qual.word[0] ==
2066 FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
Christof Schmittb62a8d92010-09-08 14:39:55 +02002067 zfcp_fc_test_link(zfcp_sdev->port);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002068 req->status |= ZFCP_STATUS_FSFREQ_ERROR;
2069 break;
2070 }
Christof Schmittc61b5362010-09-08 14:39:58 +02002071}
2072
2073static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req)
2074{
2075 struct scsi_cmnd *scpnt;
2076 struct fcp_resp_with_ext *fcp_rsp;
2077 unsigned long flags;
2078
Christof Schmittc61b5362010-09-08 14:39:58 +02002079 read_lock_irqsave(&req->adapter->abort_lock, flags);
2080
2081 scpnt = req->data;
2082 if (unlikely(!scpnt)) {
2083 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
2084 return;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002085 }
Christof Schmittc61b5362010-09-08 14:39:58 +02002086
Swen Schillig5bfb2c32010-11-17 14:23:40 +01002087 zfcp_fsf_fcp_handler_common(req);
2088
Christof Schmittc61b5362010-09-08 14:39:58 +02002089 if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
2090 set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
2091 goto skip_fsfstatus;
2092 }
2093
2094 switch (req->qtcb->header.fsf_status) {
2095 case FSF_INCONSISTENT_PROT_DATA:
2096 case FSF_INVALID_PROT_PARM:
2097 set_host_byte(scpnt, DID_ERROR);
2098 goto skip_fsfstatus;
2099 case FSF_BLOCK_GUARD_CHECK_FAILURE:
2100 zfcp_scsi_dif_sense_error(scpnt, 0x1);
2101 goto skip_fsfstatus;
2102 case FSF_APP_TAG_CHECK_FAILURE:
2103 zfcp_scsi_dif_sense_error(scpnt, 0x2);
2104 goto skip_fsfstatus;
2105 case FSF_REF_TAG_CHECK_FAILURE:
2106 zfcp_scsi_dif_sense_error(scpnt, 0x3);
2107 goto skip_fsfstatus;
2108 }
2109 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2110 zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
2111
2112skip_fsfstatus:
2113 zfcp_fsf_req_trace(req, scpnt);
Swen Schillig250a1352010-12-02 15:16:15 +01002114 zfcp_dbf_scsi_result(scpnt, req);
Christof Schmittc61b5362010-09-08 14:39:58 +02002115
2116 scpnt->host_scribble = NULL;
2117 (scpnt->scsi_done) (scpnt);
2118 /*
2119 * We must hold this lock until scsi_done has been called.
2120 * Otherwise we may call scsi_done after abort regarding this
2121 * command has completed.
2122 * Note: scsi_done must not block!
2123 */
2124 read_unlock_irqrestore(&req->adapter->abort_lock, flags);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002125}
2126
Felix Beckef3eb712010-07-16 15:37:42 +02002127static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
2128{
2129 switch (scsi_get_prot_op(scsi_cmnd)) {
2130 case SCSI_PROT_NORMAL:
2131 switch (scsi_cmnd->sc_data_direction) {
2132 case DMA_NONE:
2133 *data_dir = FSF_DATADIR_CMND;
2134 break;
2135 case DMA_FROM_DEVICE:
2136 *data_dir = FSF_DATADIR_READ;
2137 break;
2138 case DMA_TO_DEVICE:
2139 *data_dir = FSF_DATADIR_WRITE;
2140 break;
2141 case DMA_BIDIRECTIONAL:
2142 return -EINVAL;
2143 }
2144 break;
2145
2146 case SCSI_PROT_READ_STRIP:
2147 *data_dir = FSF_DATADIR_DIF_READ_STRIP;
2148 break;
2149 case SCSI_PROT_WRITE_INSERT:
2150 *data_dir = FSF_DATADIR_DIF_WRITE_INSERT;
2151 break;
2152 case SCSI_PROT_READ_PASS:
2153 *data_dir = FSF_DATADIR_DIF_READ_CONVERT;
2154 break;
2155 case SCSI_PROT_WRITE_PASS:
2156 *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT;
2157 break;
2158 default:
2159 return -EINVAL;
2160 }
2161
2162 return 0;
2163}
2164
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002165/**
Christof Schmittb62a8d92010-09-08 14:39:55 +02002166 * zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command)
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002167 * @scsi_cmnd: scsi command to be sent
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002168 */
Christof Schmittb62a8d92010-09-08 14:39:55 +02002169int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002170{
2171 struct zfcp_fsf_req *req;
Christof Schmitt4318e082009-11-24 16:54:08 +01002172 struct fcp_cmnd *fcp_cmnd;
Jan Glauber3ec90872011-06-06 14:14:40 +02002173 u8 sbtype = SBAL_SFLAGS0_TYPE_READ;
Swen Schillig86a96682011-08-15 14:40:32 +02002174 int retval = -EIO;
Christof Schmittb62a8d92010-09-08 14:39:55 +02002175 struct scsi_device *sdev = scsi_cmnd->device;
2176 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
2177 struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
Swen Schillig564e1c82009-08-18 15:43:19 +02002178 struct zfcp_qdio *qdio = adapter->qdio;
Felix Beckef3eb712010-07-16 15:37:42 +02002179 struct fsf_qtcb_bottom_io *io;
Christof Schmitte55f8752010-11-18 14:53:18 +01002180 unsigned long flags;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002181
Christof Schmittb62a8d92010-09-08 14:39:55 +02002182 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002183 ZFCP_STATUS_COMMON_UNBLOCKED)))
2184 return -EBUSY;
2185
Christof Schmitte55f8752010-11-18 14:53:18 +01002186 spin_lock_irqsave(&qdio->req_q_lock, flags);
Swen Schillig706eca42010-07-16 15:37:38 +02002187 if (atomic_read(&qdio->req_q_free) <= 0) {
Swen Schillig564e1c82009-08-18 15:43:19 +02002188 atomic_inc(&qdio->req_q_full);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002189 goto out;
Christof Schmitt8fdf30d2009-03-02 13:09:01 +01002190 }
Swen Schillig09a46c62009-08-18 15:43:16 +02002191
Christof Schmitt1674b402010-04-30 18:09:34 +02002192 if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
Jan Glauber3ec90872011-06-06 14:14:40 +02002193 sbtype = SBAL_SFLAGS0_TYPE_WRITE;
Christof Schmitt1674b402010-04-30 18:09:34 +02002194
Swen Schillig564e1c82009-08-18 15:43:19 +02002195 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
Christof Schmitt1674b402010-04-30 18:09:34 +02002196 sbtype, adapter->pool.scsi_req);
Swen Schillig09a46c62009-08-18 15:43:16 +02002197
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +02002198 if (IS_ERR(req)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002199 retval = PTR_ERR(req);
2200 goto out;
2201 }
2202
Felix Beckef3eb712010-07-16 15:37:42 +02002203 scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
2204
2205 io = &req->qtcb->bottom.io;
Swen Schillig09a46c62009-08-18 15:43:16 +02002206 req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002207 req->data = scsi_cmnd;
Christof Schmittc61b5362010-09-08 14:39:58 +02002208 req->handler = zfcp_fsf_fcp_cmnd_handler;
Christof Schmittb62a8d92010-09-08 14:39:55 +02002209 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2210 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
Felix Beckef3eb712010-07-16 15:37:42 +02002211 io->service_class = FSF_CLASS_3;
2212 io->fcp_cmnd_length = FCP_CMND_LEN;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002213
Felix Beckef3eb712010-07-16 15:37:42 +02002214 if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) {
2215 io->data_block_length = scsi_cmnd->device->sector_size;
2216 io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002217 }
2218
Steffen Maiercc405ac2011-08-15 14:40:30 +02002219 if (zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction))
2220 goto failed_scsi_cmnd;
Felix Beckef3eb712010-07-16 15:37:42 +02002221
Christof Schmitt4318e082009-11-24 16:54:08 +01002222 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
Christof Schmitt2443c8b2011-02-22 19:54:45 +01002223 zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd, 0);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002224
Felix Beckef3eb712010-07-16 15:37:42 +02002225 if (scsi_prot_sg_count(scsi_cmnd)) {
2226 zfcp_qdio_set_data_div(qdio, &req->qdio_req,
2227 scsi_prot_sg_count(scsi_cmnd));
Swen Schillig86a96682011-08-15 14:40:32 +02002228 retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2229 scsi_prot_sglist(scsi_cmnd));
2230 if (retval)
2231 goto failed_scsi_cmnd;
2232 io->prot_data_length = zfcp_qdio_real_bytes(
Felix Beckef3eb712010-07-16 15:37:42 +02002233 scsi_prot_sglist(scsi_cmnd));
Felix Beckef3eb712010-07-16 15:37:42 +02002234 }
2235
Swen Schillig86a96682011-08-15 14:40:32 +02002236 retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
2237 scsi_sglist(scsi_cmnd));
2238 if (unlikely(retval))
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002239 goto failed_scsi_cmnd;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002240
Felix Beckef3eb712010-07-16 15:37:42 +02002241 zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
Swen Schillig86a96682011-08-15 14:40:32 +02002242 if (zfcp_adapter_multi_buffer_active(adapter))
2243 zfcp_qdio_set_scount(qdio, &req->qdio_req);
Felix Beckef3eb712010-07-16 15:37:42 +02002244
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002245 retval = zfcp_fsf_req_send(req);
2246 if (unlikely(retval))
2247 goto failed_scsi_cmnd;
2248
2249 goto out;
2250
2251failed_scsi_cmnd:
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002252 zfcp_fsf_req_free(req);
2253 scsi_cmnd->host_scribble = NULL;
2254out:
Christof Schmitte55f8752010-11-18 14:53:18 +01002255 spin_unlock_irqrestore(&qdio->req_q_lock, flags);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002256 return retval;
2257}
2258
Christof Schmittc61b5362010-09-08 14:39:58 +02002259static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req)
2260{
2261 struct fcp_resp_with_ext *fcp_rsp;
2262 struct fcp_resp_rsp_info *rsp_info;
2263
2264 zfcp_fsf_fcp_handler_common(req);
2265
2266 fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
2267 rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
2268
2269 if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
2270 (req->status & ZFCP_STATUS_FSFREQ_ERROR))
2271 req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
2272}
2273
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002274/**
Christof Schmittb62a8d92010-09-08 14:39:55 +02002275 * zfcp_fsf_fcp_task_mgmt - send SCSI task management command
2276 * @scmnd: SCSI command to send the task management command for
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002277 * @tm_flags: unsigned byte for task management flags
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002278 * Returns: on success pointer to struct fsf_req, NULL otherwise
2279 */
Christof Schmittb62a8d92010-09-08 14:39:55 +02002280struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd,
2281 u8 tm_flags)
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002282{
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002283 struct zfcp_fsf_req *req = NULL;
Christof Schmitt4318e082009-11-24 16:54:08 +01002284 struct fcp_cmnd *fcp_cmnd;
Christof Schmittb62a8d92010-09-08 14:39:55 +02002285 struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device);
2286 struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002287
Christof Schmittb62a8d92010-09-08 14:39:55 +02002288 if (unlikely(!(atomic_read(&zfcp_sdev->status) &
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002289 ZFCP_STATUS_COMMON_UNBLOCKED)))
2290 return NULL;
2291
Christof Schmitt44a24cb2010-09-08 14:39:57 +02002292 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02002293 if (zfcp_qdio_sbal_get(qdio))
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002294 goto out;
Swen Schillig09a46c62009-08-18 15:43:16 +02002295
Swen Schillig564e1c82009-08-18 15:43:19 +02002296 req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
Jan Glauber3ec90872011-06-06 14:14:40 +02002297 SBAL_SFLAGS0_TYPE_WRITE,
Swen Schillig564e1c82009-08-18 15:43:19 +02002298 qdio->adapter->pool.scsi_req);
Swen Schillig09a46c62009-08-18 15:43:16 +02002299
Swen Schillig633528c2008-11-26 18:07:37 +01002300 if (IS_ERR(req)) {
2301 req = NULL;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002302 goto out;
Swen Schillig633528c2008-11-26 18:07:37 +01002303 }
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002304
Christof Schmittb62a8d92010-09-08 14:39:55 +02002305 req->data = scmnd;
Christof Schmittc61b5362010-09-08 14:39:58 +02002306 req->handler = zfcp_fsf_fcp_task_mgmt_handler;
Christof Schmittb62a8d92010-09-08 14:39:55 +02002307 req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
2308 req->qtcb->header.port_handle = zfcp_sdev->port->handle;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002309 req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
2310 req->qtcb->bottom.io.service_class = FSF_CLASS_3;
Christof Schmitt4318e082009-11-24 16:54:08 +01002311 req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002312
Christof Schmitt1674b402010-04-30 18:09:34 +02002313 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002314
Christof Schmitt4318e082009-11-24 16:54:08 +01002315 fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
Christof Schmitt2443c8b2011-02-22 19:54:45 +01002316 zfcp_fc_scsi_to_fcp(fcp_cmnd, scmnd, tm_flags);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002317
2318 zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
2319 if (!zfcp_fsf_req_send(req))
2320 goto out;
2321
2322 zfcp_fsf_req_free(req);
2323 req = NULL;
2324out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02002325 spin_unlock_irq(&qdio->req_q_lock);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002326 return req;
2327}
2328
2329static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
2330{
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002331}
2332
2333/**
2334 * zfcp_fsf_control_file - control file upload/download
2335 * @adapter: pointer to struct zfcp_adapter
2336 * @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
2337 * Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
Linus Torvalds1da177e2005-04-16 15:20:36 -07002338 */
Christof Schmitt45633fd2008-06-10 18:20:55 +02002339struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
2340 struct zfcp_fsf_cfdc *fsf_cfdc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002341{
Swen Schillig564e1c82009-08-18 15:43:19 +02002342 struct zfcp_qdio *qdio = adapter->qdio;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002343 struct zfcp_fsf_req *req = NULL;
2344 struct fsf_qtcb_bottom_support *bottom;
Swen Schillig86a96682011-08-15 14:40:32 +02002345 int retval = -EIO;
Jan Glauber3ec90872011-06-06 14:14:40 +02002346 u8 direction;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002347
Christof Schmitt45633fd2008-06-10 18:20:55 +02002348 if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
2349 return ERR_PTR(-EOPNOTSUPP);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002350
Christof Schmitt45633fd2008-06-10 18:20:55 +02002351 switch (fsf_cfdc->command) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002352 case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
Jan Glauber3ec90872011-06-06 14:14:40 +02002353 direction = SBAL_SFLAGS0_TYPE_WRITE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002354 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002355 case FSF_QTCB_UPLOAD_CONTROL_FILE:
Jan Glauber3ec90872011-06-06 14:14:40 +02002356 direction = SBAL_SFLAGS0_TYPE_READ;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002357 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002358 default:
Christof Schmitt45633fd2008-06-10 18:20:55 +02002359 return ERR_PTR(-EINVAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002360 }
2361
Christof Schmitt44a24cb2010-09-08 14:39:57 +02002362 spin_lock_irq(&qdio->req_q_lock);
Christof Schmitt6b9e1522010-04-30 18:09:35 +02002363 if (zfcp_qdio_sbal_get(qdio))
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002364 goto out;
2365
Christof Schmitt1674b402010-04-30 18:09:34 +02002366 req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, direction, NULL);
Hirofumi Nakagawa025270f2008-08-21 13:43:37 +02002367 if (IS_ERR(req)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002368 retval = -EPERM;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002369 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002370 }
2371
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002372 req->handler = zfcp_fsf_control_file_handler;
2373
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002374 bottom = &req->qtcb->bottom.support;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002375 bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
Christof Schmitt45633fd2008-06-10 18:20:55 +02002376 bottom->option = fsf_cfdc->option;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002377
Swen Schillig86a96682011-08-15 14:40:32 +02002378 retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, fsf_cfdc->sg);
Swen Schillig01b04752010-07-16 15:37:37 +02002379
Swen Schillig86a96682011-08-15 14:40:32 +02002380 if (retval ||
2381 (zfcp_qdio_real_bytes(fsf_cfdc->sg) != ZFCP_CFDC_MAX_SIZE)) {
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002382 zfcp_fsf_req_free(req);
Swen Schillig86a96682011-08-15 14:40:32 +02002383 retval = -EIO;
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002384 goto out;
Christof Schmitt45633fd2008-06-10 18:20:55 +02002385 }
Swen Schillig86a96682011-08-15 14:40:32 +02002386 zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
2387 if (zfcp_adapter_multi_buffer_active(adapter))
2388 zfcp_qdio_set_scount(qdio, &req->qdio_req);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002389
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002390 zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
2391 retval = zfcp_fsf_req_send(req);
2392out:
Christof Schmitt44a24cb2010-09-08 14:39:57 +02002393 spin_unlock_irq(&qdio->req_q_lock);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002394
2395 if (!retval) {
Swen Schillig058b8642009-08-18 15:43:14 +02002396 wait_for_completion(&req->completion);
Swen Schilligc41f8cb2008-07-02 10:56:39 +02002397 return req;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002398 }
Christof Schmitt45633fd2008-06-10 18:20:55 +02002399 return ERR_PTR(retval);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002400}
Swen Schilligbd63eaf2009-08-18 15:43:13 +02002401
2402/**
2403 * zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
2404 * @adapter: pointer to struct zfcp_adapter
2405 * @sbal_idx: response queue index of SBAL to be processed
2406 */
Swen Schillig564e1c82009-08-18 15:43:19 +02002407void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
Swen Schilligbd63eaf2009-08-18 15:43:13 +02002408{
Swen Schillig564e1c82009-08-18 15:43:19 +02002409 struct zfcp_adapter *adapter = qdio->adapter;
Swen Schillig706eca42010-07-16 15:37:38 +02002410 struct qdio_buffer *sbal = qdio->res_q[sbal_idx];
Swen Schilligbd63eaf2009-08-18 15:43:13 +02002411 struct qdio_buffer_element *sbale;
2412 struct zfcp_fsf_req *fsf_req;
Christof Schmittb6bd2fb2010-02-17 11:18:50 +01002413 unsigned long req_id;
Swen Schilligbd63eaf2009-08-18 15:43:13 +02002414 int idx;
2415
2416 for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
2417
2418 sbale = &sbal->element[idx];
2419 req_id = (unsigned long) sbale->addr;
Christof Schmittb6bd2fb2010-02-17 11:18:50 +01002420 fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
Swen Schilligbd63eaf2009-08-18 15:43:13 +02002421
Christof Schmitt339f4f42010-07-16 15:37:43 +02002422 if (!fsf_req) {
Swen Schilligbd63eaf2009-08-18 15:43:13 +02002423 /*
2424 * Unknown request means that we have potentially memory
2425 * corruption and must stop the machine immediately.
2426 */
Christof Schmitt339f4f42010-07-16 15:37:43 +02002427 zfcp_qdio_siosl(adapter);
Swen Schilligbd63eaf2009-08-18 15:43:13 +02002428 panic("error: unknown req_id (%lx) on adapter %s.\n",
2429 req_id, dev_name(&adapter->ccw_device->dev));
Christof Schmitt339f4f42010-07-16 15:37:43 +02002430 }
Swen Schilligbd63eaf2009-08-18 15:43:13 +02002431
Christof Schmitt34c2b712010-02-17 11:18:59 +01002432 fsf_req->qdio_req.sbal_response = sbal_idx;
Swen Schilligbd63eaf2009-08-18 15:43:13 +02002433 zfcp_fsf_req_complete(fsf_req);
2434
Jan Glauber3ec90872011-06-06 14:14:40 +02002435 if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY))
Swen Schilligbd63eaf2009-08-18 15:43:13 +02002436 break;
2437 }
2438}
Swen Schilliga54ca0f2010-12-02 15:16:14 +01002439
2440struct zfcp_fsf_req *zfcp_fsf_get_req(struct zfcp_qdio *qdio,
2441 struct qdio_buffer *sbal)
2442{
2443 struct qdio_buffer_element *sbale = &sbal->element[0];
2444 u64 req_id = (unsigned long) sbale->addr;
2445
2446 return zfcp_reqlist_find(qdio->adapter->req_list, req_id);
2447}