Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
[linux-2.6.git] / drivers / scsi / mpt2sas / mpt2sas_base.c
1 /*
2  * This is the Fusion MPT base driver providing common API layer interface
3  * for access to MPT (Message Passing Technology) firmware.
4  *
5  * This code is based on drivers/scsi/mpt2sas/mpt2_base.c
6  * Copyright (C) 2007-2010  LSI Corporation
7  *  (mailto:DL-MPTFusionLinux@lsi.com)
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * as published by the Free Software Foundation; either version 2
12  * of the License, or (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * NO WARRANTY
20  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
21  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
22  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
23  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
24  * solely responsible for determining the appropriateness of using and
25  * distributing the Program and assumes all risks associated with its
26  * exercise of rights under this Agreement, including but not limited to
27  * the risks and costs of program errors, damage to or loss of data,
28  * programs or equipment, and unavailability or interruption of operations.
29
30  * DISCLAIMER OF LIABILITY
31  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
32  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
34  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
35  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
36  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
37  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
38
39  * You should have received a copy of the GNU General Public License
40  * along with this program; if not, write to the Free Software
41  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
42  * USA.
43  */
44
45 #include <linux/kernel.h>
46 #include <linux/module.h>
47 #include <linux/errno.h>
48 #include <linux/init.h>
49 #include <linux/slab.h>
50 #include <linux/types.h>
51 #include <linux/pci.h>
52 #include <linux/kdev_t.h>
53 #include <linux/blkdev.h>
54 #include <linux/delay.h>
55 #include <linux/interrupt.h>
56 #include <linux/dma-mapping.h>
57 #include <linux/sort.h>
58 #include <linux/io.h>
59 #include <linux/time.h>
60 #include <linux/aer.h>
61
62 #include "mpt2sas_base.h"
63
64 static MPT_CALLBACK     mpt_callbacks[MPT_MAX_CALLBACKS];
65
66 #define FAULT_POLLING_INTERVAL 1000 /* in milliseconds */
67
68 static int max_queue_depth = -1;
69 module_param(max_queue_depth, int, 0);
70 MODULE_PARM_DESC(max_queue_depth, " max controller queue depth ");
71
72 static int max_sgl_entries = -1;
73 module_param(max_sgl_entries, int, 0);
74 MODULE_PARM_DESC(max_sgl_entries, " max sg entries ");
75
76 static int msix_disable = -1;
77 module_param(msix_disable, int, 0);
78 MODULE_PARM_DESC(msix_disable, " disable msix routed interrupts (default=0)");
79
80 static int missing_delay[2] = {-1, -1};
81 module_param_array(missing_delay, int, NULL, 0);
82 MODULE_PARM_DESC(missing_delay, " device missing delay , io missing delay");
83
84 /* diag_buffer_enable is bitwise
85  * bit 0 set = TRACE
86  * bit 1 set = SNAPSHOT
87  * bit 2 set = EXTENDED
88  *
89  * Either bit can be set, or both
90  */
91 static int diag_buffer_enable;
92 module_param(diag_buffer_enable, int, 0);
93 MODULE_PARM_DESC(diag_buffer_enable, " post diag buffers "
94     "(TRACE=1/SNAPSHOT=2/EXTENDED=4/default=0)");
95
96 static int mpt2sas_fwfault_debug;
97 MODULE_PARM_DESC(mpt2sas_fwfault_debug, " enable detection of firmware fault "
98     "and halt firmware - (default=0)");
99
100 static int disable_discovery = -1;
101 module_param(disable_discovery, int, 0);
102 MODULE_PARM_DESC(disable_discovery, " disable discovery ");
103
104 /**
105  * _scsih_set_fwfault_debug - global setting of ioc->fwfault_debug.
106  *
107  */
108 static int
109 _scsih_set_fwfault_debug(const char *val, struct kernel_param *kp)
110 {
111         int ret = param_set_int(val, kp);
112         struct MPT2SAS_ADAPTER *ioc;
113
114         if (ret)
115                 return ret;
116
117         printk(KERN_INFO "setting fwfault_debug(%d)\n", mpt2sas_fwfault_debug);
118         list_for_each_entry(ioc, &mpt2sas_ioc_list, list)
119                 ioc->fwfault_debug = mpt2sas_fwfault_debug;
120         return 0;
121 }
122 module_param_call(mpt2sas_fwfault_debug, _scsih_set_fwfault_debug,
123     param_get_int, &mpt2sas_fwfault_debug, 0644);
124
125 /**
126  * _base_fault_reset_work - workq handling ioc fault conditions
127  * @work: input argument, used to derive ioc
128  * Context: sleep.
129  *
130  * Return nothing.
131  */
132 static void
133 _base_fault_reset_work(struct work_struct *work)
134 {
135         struct MPT2SAS_ADAPTER *ioc =
136             container_of(work, struct MPT2SAS_ADAPTER, fault_reset_work.work);
137         unsigned long    flags;
138         u32 doorbell;
139         int rc;
140
141         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
142         if (ioc->shost_recovery)
143                 goto rearm_timer;
144         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
145
146         doorbell = mpt2sas_base_get_iocstate(ioc, 0);
147         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
148                 rc = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
149                     FORCE_BIG_HAMMER);
150                 printk(MPT2SAS_WARN_FMT "%s: hard reset: %s\n", ioc->name,
151                     __func__, (rc == 0) ? "success" : "failed");
152                 doorbell = mpt2sas_base_get_iocstate(ioc, 0);
153                 if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
154                         mpt2sas_base_fault_info(ioc, doorbell &
155                             MPI2_DOORBELL_DATA_MASK);
156         }
157
158         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
159  rearm_timer:
160         if (ioc->fault_reset_work_q)
161                 queue_delayed_work(ioc->fault_reset_work_q,
162                     &ioc->fault_reset_work,
163                     msecs_to_jiffies(FAULT_POLLING_INTERVAL));
164         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
165 }
166
167 /**
168  * mpt2sas_base_start_watchdog - start the fault_reset_work_q
169  * @ioc: per adapter object
170  * Context: sleep.
171  *
172  * Return nothing.
173  */
174 void
175 mpt2sas_base_start_watchdog(struct MPT2SAS_ADAPTER *ioc)
176 {
177         unsigned long    flags;
178
179         if (ioc->fault_reset_work_q)
180                 return;
181
182         /* initialize fault polling */
183         INIT_DELAYED_WORK(&ioc->fault_reset_work, _base_fault_reset_work);
184         snprintf(ioc->fault_reset_work_q_name,
185             sizeof(ioc->fault_reset_work_q_name), "poll_%d_status", ioc->id);
186         ioc->fault_reset_work_q =
187                 create_singlethread_workqueue(ioc->fault_reset_work_q_name);
188         if (!ioc->fault_reset_work_q) {
189                 printk(MPT2SAS_ERR_FMT "%s: failed (line=%d)\n",
190                     ioc->name, __func__, __LINE__);
191                         return;
192         }
193         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
194         if (ioc->fault_reset_work_q)
195                 queue_delayed_work(ioc->fault_reset_work_q,
196                     &ioc->fault_reset_work,
197                     msecs_to_jiffies(FAULT_POLLING_INTERVAL));
198         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
199 }
200
201 /**
202  * mpt2sas_base_stop_watchdog - stop the fault_reset_work_q
203  * @ioc: per adapter object
204  * Context: sleep.
205  *
206  * Return nothing.
207  */
208 void
209 mpt2sas_base_stop_watchdog(struct MPT2SAS_ADAPTER *ioc)
210 {
211         unsigned long    flags;
212         struct workqueue_struct *wq;
213
214         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
215         wq = ioc->fault_reset_work_q;
216         ioc->fault_reset_work_q = NULL;
217         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
218         if (wq) {
219                 if (!cancel_delayed_work(&ioc->fault_reset_work))
220                         flush_workqueue(wq);
221                 destroy_workqueue(wq);
222         }
223 }
224
225 /**
226  * mpt2sas_base_fault_info - verbose translation of firmware FAULT code
227  * @ioc: per adapter object
228  * @fault_code: fault code
229  *
230  * Return nothing.
231  */
232 void
233 mpt2sas_base_fault_info(struct MPT2SAS_ADAPTER *ioc , u16 fault_code)
234 {
235         printk(MPT2SAS_ERR_FMT "fault_state(0x%04x)!\n",
236             ioc->name, fault_code);
237 }
238
239 /**
240  * mpt2sas_halt_firmware - halt's mpt controller firmware
241  * @ioc: per adapter object
242  *
243  * For debugging timeout related issues.  Writing 0xCOFFEE00
244  * to the doorbell register will halt controller firmware. With
245  * the purpose to stop both driver and firmware, the enduser can
246  * obtain a ring buffer from controller UART.
247  */
248 void
249 mpt2sas_halt_firmware(struct MPT2SAS_ADAPTER *ioc)
250 {
251         u32 doorbell;
252
253         if (!ioc->fwfault_debug)
254                 return;
255
256         dump_stack();
257
258         doorbell = readl(&ioc->chip->Doorbell);
259         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
260                 mpt2sas_base_fault_info(ioc , doorbell);
261         else {
262                 writel(0xC0FFEE00, &ioc->chip->Doorbell);
263                 printk(MPT2SAS_ERR_FMT "Firmware is halted due to command "
264                     "timeout\n", ioc->name);
265         }
266
267         panic("panic in %s\n", __func__);
268 }
269
270 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
271 /**
272  * _base_sas_ioc_info - verbose translation of the ioc status
273  * @ioc: per adapter object
274  * @mpi_reply: reply mf payload returned from firmware
275  * @request_hdr: request mf
276  *
277  * Return nothing.
278  */
279 static void
280 _base_sas_ioc_info(struct MPT2SAS_ADAPTER *ioc, MPI2DefaultReply_t *mpi_reply,
281      MPI2RequestHeader_t *request_hdr)
282 {
283         u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
284             MPI2_IOCSTATUS_MASK;
285         char *desc = NULL;
286         u16 frame_sz;
287         char *func_str = NULL;
288
289         /* SCSI_IO, RAID_PASS are handled from _scsih_scsi_ioc_info */
290         if (request_hdr->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
291             request_hdr->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
292             request_hdr->Function == MPI2_FUNCTION_EVENT_NOTIFICATION)
293                 return;
294
295         if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
296                 return;
297
298         switch (ioc_status) {
299
300 /****************************************************************************
301 *  Common IOCStatus values for all replies
302 ****************************************************************************/
303
304         case MPI2_IOCSTATUS_INVALID_FUNCTION:
305                 desc = "invalid function";
306                 break;
307         case MPI2_IOCSTATUS_BUSY:
308                 desc = "busy";
309                 break;
310         case MPI2_IOCSTATUS_INVALID_SGL:
311                 desc = "invalid sgl";
312                 break;
313         case MPI2_IOCSTATUS_INTERNAL_ERROR:
314                 desc = "internal error";
315                 break;
316         case MPI2_IOCSTATUS_INVALID_VPID:
317                 desc = "invalid vpid";
318                 break;
319         case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
320                 desc = "insufficient resources";
321                 break;
322         case MPI2_IOCSTATUS_INVALID_FIELD:
323                 desc = "invalid field";
324                 break;
325         case MPI2_IOCSTATUS_INVALID_STATE:
326                 desc = "invalid state";
327                 break;
328         case MPI2_IOCSTATUS_OP_STATE_NOT_SUPPORTED:
329                 desc = "op state not supported";
330                 break;
331
332 /****************************************************************************
333 *  Config IOCStatus values
334 ****************************************************************************/
335
336         case MPI2_IOCSTATUS_CONFIG_INVALID_ACTION:
337                 desc = "config invalid action";
338                 break;
339         case MPI2_IOCSTATUS_CONFIG_INVALID_TYPE:
340                 desc = "config invalid type";
341                 break;
342         case MPI2_IOCSTATUS_CONFIG_INVALID_PAGE:
343                 desc = "config invalid page";
344                 break;
345         case MPI2_IOCSTATUS_CONFIG_INVALID_DATA:
346                 desc = "config invalid data";
347                 break;
348         case MPI2_IOCSTATUS_CONFIG_NO_DEFAULTS:
349                 desc = "config no defaults";
350                 break;
351         case MPI2_IOCSTATUS_CONFIG_CANT_COMMIT:
352                 desc = "config cant commit";
353                 break;
354
355 /****************************************************************************
356 *  SCSI IO Reply
357 ****************************************************************************/
358
359         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
360         case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
361         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
362         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
363         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
364         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
365         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
366         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
367         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
368         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
369         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
370         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
371                 break;
372
373 /****************************************************************************
374 *  For use by SCSI Initiator and SCSI Target end-to-end data protection
375 ****************************************************************************/
376
377         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
378                 desc = "eedp guard error";
379                 break;
380         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
381                 desc = "eedp ref tag error";
382                 break;
383         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
384                 desc = "eedp app tag error";
385                 break;
386
387 /****************************************************************************
388 *  SCSI Target values
389 ****************************************************************************/
390
391         case MPI2_IOCSTATUS_TARGET_INVALID_IO_INDEX:
392                 desc = "target invalid io index";
393                 break;
394         case MPI2_IOCSTATUS_TARGET_ABORTED:
395                 desc = "target aborted";
396                 break;
397         case MPI2_IOCSTATUS_TARGET_NO_CONN_RETRYABLE:
398                 desc = "target no conn retryable";
399                 break;
400         case MPI2_IOCSTATUS_TARGET_NO_CONNECTION:
401                 desc = "target no connection";
402                 break;
403         case MPI2_IOCSTATUS_TARGET_XFER_COUNT_MISMATCH:
404                 desc = "target xfer count mismatch";
405                 break;
406         case MPI2_IOCSTATUS_TARGET_DATA_OFFSET_ERROR:
407                 desc = "target data offset error";
408                 break;
409         case MPI2_IOCSTATUS_TARGET_TOO_MUCH_WRITE_DATA:
410                 desc = "target too much write data";
411                 break;
412         case MPI2_IOCSTATUS_TARGET_IU_TOO_SHORT:
413                 desc = "target iu too short";
414                 break;
415         case MPI2_IOCSTATUS_TARGET_ACK_NAK_TIMEOUT:
416                 desc = "target ack nak timeout";
417                 break;
418         case MPI2_IOCSTATUS_TARGET_NAK_RECEIVED:
419                 desc = "target nak received";
420                 break;
421
422 /****************************************************************************
423 *  Serial Attached SCSI values
424 ****************************************************************************/
425
426         case MPI2_IOCSTATUS_SAS_SMP_REQUEST_FAILED:
427                 desc = "smp request failed";
428                 break;
429         case MPI2_IOCSTATUS_SAS_SMP_DATA_OVERRUN:
430                 desc = "smp data overrun";
431                 break;
432
433 /****************************************************************************
434 *  Diagnostic Buffer Post / Diagnostic Release values
435 ****************************************************************************/
436
437         case MPI2_IOCSTATUS_DIAGNOSTIC_RELEASED:
438                 desc = "diagnostic released";
439                 break;
440         default:
441                 break;
442         }
443
444         if (!desc)
445                 return;
446
447         switch (request_hdr->Function) {
448         case MPI2_FUNCTION_CONFIG:
449                 frame_sz = sizeof(Mpi2ConfigRequest_t) + ioc->sge_size;
450                 func_str = "config_page";
451                 break;
452         case MPI2_FUNCTION_SCSI_TASK_MGMT:
453                 frame_sz = sizeof(Mpi2SCSITaskManagementRequest_t);
454                 func_str = "task_mgmt";
455                 break;
456         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
457                 frame_sz = sizeof(Mpi2SasIoUnitControlRequest_t);
458                 func_str = "sas_iounit_ctl";
459                 break;
460         case MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR:
461                 frame_sz = sizeof(Mpi2SepRequest_t);
462                 func_str = "enclosure";
463                 break;
464         case MPI2_FUNCTION_IOC_INIT:
465                 frame_sz = sizeof(Mpi2IOCInitRequest_t);
466                 func_str = "ioc_init";
467                 break;
468         case MPI2_FUNCTION_PORT_ENABLE:
469                 frame_sz = sizeof(Mpi2PortEnableRequest_t);
470                 func_str = "port_enable";
471                 break;
472         case MPI2_FUNCTION_SMP_PASSTHROUGH:
473                 frame_sz = sizeof(Mpi2SmpPassthroughRequest_t) + ioc->sge_size;
474                 func_str = "smp_passthru";
475                 break;
476         default:
477                 frame_sz = 32;
478                 func_str = "unknown";
479                 break;
480         }
481
482         printk(MPT2SAS_WARN_FMT "ioc_status: %s(0x%04x), request(0x%p),"
483             " (%s)\n", ioc->name, desc, ioc_status, request_hdr, func_str);
484
485         _debug_dump_mf(request_hdr, frame_sz/4);
486 }
487
488 /**
489  * _base_display_event_data - verbose translation of firmware asyn events
490  * @ioc: per adapter object
491  * @mpi_reply: reply mf payload returned from firmware
492  *
493  * Return nothing.
494  */
495 static void
496 _base_display_event_data(struct MPT2SAS_ADAPTER *ioc,
497     Mpi2EventNotificationReply_t *mpi_reply)
498 {
499         char *desc = NULL;
500         u16 event;
501
502         if (!(ioc->logging_level & MPT_DEBUG_EVENTS))
503                 return;
504
505         event = le16_to_cpu(mpi_reply->Event);
506
507         switch (event) {
508         case MPI2_EVENT_LOG_DATA:
509                 desc = "Log Data";
510                 break;
511         case MPI2_EVENT_STATE_CHANGE:
512                 desc = "Status Change";
513                 break;
514         case MPI2_EVENT_HARD_RESET_RECEIVED:
515                 desc = "Hard Reset Received";
516                 break;
517         case MPI2_EVENT_EVENT_CHANGE:
518                 desc = "Event Change";
519                 break;
520         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
521                 desc = "Device Status Change";
522                 break;
523         case MPI2_EVENT_IR_OPERATION_STATUS:
524                 if (!ioc->hide_ir_msg)
525                         desc = "IR Operation Status";
526                 break;
527         case MPI2_EVENT_SAS_DISCOVERY:
528         {
529                 Mpi2EventDataSasDiscovery_t *event_data =
530                     (Mpi2EventDataSasDiscovery_t *)mpi_reply->EventData;
531                 printk(MPT2SAS_INFO_FMT "Discovery: (%s)", ioc->name,
532                     (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
533                     "start" : "stop");
534                 if (event_data->DiscoveryStatus)
535                         printk("discovery_status(0x%08x)",
536                             le32_to_cpu(event_data->DiscoveryStatus));
537                 printk("\n");
538                 return;
539         }
540         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
541                 desc = "SAS Broadcast Primitive";
542                 break;
543         case MPI2_EVENT_SAS_INIT_DEVICE_STATUS_CHANGE:
544                 desc = "SAS Init Device Status Change";
545                 break;
546         case MPI2_EVENT_SAS_INIT_TABLE_OVERFLOW:
547                 desc = "SAS Init Table Overflow";
548                 break;
549         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
550                 desc = "SAS Topology Change List";
551                 break;
552         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
553                 desc = "SAS Enclosure Device Status Change";
554                 break;
555         case MPI2_EVENT_IR_VOLUME:
556                 if (!ioc->hide_ir_msg)
557                         desc = "IR Volume";
558                 break;
559         case MPI2_EVENT_IR_PHYSICAL_DISK:
560                 if (!ioc->hide_ir_msg)
561                         desc = "IR Physical Disk";
562                 break;
563         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
564                 if (!ioc->hide_ir_msg)
565                         desc = "IR Configuration Change List";
566                 break;
567         case MPI2_EVENT_LOG_ENTRY_ADDED:
568                 if (!ioc->hide_ir_msg)
569                         desc = "Log Entry Added";
570                 break;
571         }
572
573         if (!desc)
574                 return;
575
576         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name, desc);
577 }
578 #endif
579
580 /**
581  * _base_sas_log_info - verbose translation of firmware log info
582  * @ioc: per adapter object
583  * @log_info: log info
584  *
585  * Return nothing.
586  */
587 static void
588 _base_sas_log_info(struct MPT2SAS_ADAPTER *ioc , u32 log_info)
589 {
590         union loginfo_type {
591                 u32     loginfo;
592                 struct {
593                         u32     subcode:16;
594                         u32     code:8;
595                         u32     originator:4;
596                         u32     bus_type:4;
597                 } dw;
598         };
599         union loginfo_type sas_loginfo;
600         char *originator_str = NULL;
601
602         sas_loginfo.loginfo = log_info;
603         if (sas_loginfo.dw.bus_type != 3 /*SAS*/)
604                 return;
605
606         /* each nexus loss loginfo */
607         if (log_info == 0x31170000)
608                 return;
609
610         /* eat the loginfos associated with task aborts */
611         if (ioc->ignore_loginfos && (log_info == 30050000 || log_info ==
612             0x31140000 || log_info == 0x31130000))
613                 return;
614
615         switch (sas_loginfo.dw.originator) {
616         case 0:
617                 originator_str = "IOP";
618                 break;
619         case 1:
620                 originator_str = "PL";
621                 break;
622         case 2:
623                 if (!ioc->hide_ir_msg)
624                         originator_str = "IR";
625                 else
626                         originator_str = "WarpDrive";
627                 break;
628         }
629
630         printk(MPT2SAS_WARN_FMT "log_info(0x%08x): originator(%s), "
631             "code(0x%02x), sub_code(0x%04x)\n", ioc->name, log_info,
632              originator_str, sas_loginfo.dw.code,
633              sas_loginfo.dw.subcode);
634 }
635
636 /**
637  * _base_display_reply_info -
638  * @ioc: per adapter object
639  * @smid: system request message index
640  * @msix_index: MSIX table index supplied by the OS
641  * @reply: reply message frame(lower 32bit addr)
642  *
643  * Return nothing.
644  */
645 static void
646 _base_display_reply_info(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
647     u32 reply)
648 {
649         MPI2DefaultReply_t *mpi_reply;
650         u16 ioc_status;
651
652         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
653         ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
654 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
655         if ((ioc_status & MPI2_IOCSTATUS_MASK) &&
656             (ioc->logging_level & MPT_DEBUG_REPLY)) {
657                 _base_sas_ioc_info(ioc , mpi_reply,
658                    mpt2sas_base_get_msg_frame(ioc, smid));
659         }
660 #endif
661         if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
662                 _base_sas_log_info(ioc, le32_to_cpu(mpi_reply->IOCLogInfo));
663 }
664
665 /**
666  * mpt2sas_base_done - base internal command completion routine
667  * @ioc: per adapter object
668  * @smid: system request message index
669  * @msix_index: MSIX table index supplied by the OS
670  * @reply: reply message frame(lower 32bit addr)
671  *
672  * Return 1 meaning mf should be freed from _base_interrupt
673  *        0 means the mf is freed from this function.
674  */
675 u8
676 mpt2sas_base_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
677     u32 reply)
678 {
679         MPI2DefaultReply_t *mpi_reply;
680
681         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
682         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
683                 return 1;
684
685         if (ioc->base_cmds.status == MPT2_CMD_NOT_USED)
686                 return 1;
687
688         ioc->base_cmds.status |= MPT2_CMD_COMPLETE;
689         if (mpi_reply) {
690                 ioc->base_cmds.status |= MPT2_CMD_REPLY_VALID;
691                 memcpy(ioc->base_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
692         }
693         ioc->base_cmds.status &= ~MPT2_CMD_PENDING;
694         complete(&ioc->base_cmds.done);
695         return 1;
696 }
697
698 /**
699  * _base_async_event - main callback handler for firmware asyn events
700  * @ioc: per adapter object
701  * @msix_index: MSIX table index supplied by the OS
702  * @reply: reply message frame(lower 32bit addr)
703  *
704  * Return 1 meaning mf should be freed from _base_interrupt
705  *        0 means the mf is freed from this function.
706  */
707 static u8
708 _base_async_event(struct MPT2SAS_ADAPTER *ioc, u8 msix_index, u32 reply)
709 {
710         Mpi2EventNotificationReply_t *mpi_reply;
711         Mpi2EventAckRequest_t *ack_request;
712         u16 smid;
713
714         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
715         if (!mpi_reply)
716                 return 1;
717         if (mpi_reply->Function != MPI2_FUNCTION_EVENT_NOTIFICATION)
718                 return 1;
719 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
720         _base_display_event_data(ioc, mpi_reply);
721 #endif
722         if (!(mpi_reply->AckRequired & MPI2_EVENT_NOTIFICATION_ACK_REQUIRED))
723                 goto out;
724         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
725         if (!smid) {
726                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
727                     ioc->name, __func__);
728                 goto out;
729         }
730
731         ack_request = mpt2sas_base_get_msg_frame(ioc, smid);
732         memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
733         ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
734         ack_request->Event = mpi_reply->Event;
735         ack_request->EventContext = mpi_reply->EventContext;
736         ack_request->VF_ID = 0;  /* TODO */
737         ack_request->VP_ID = 0;
738         mpt2sas_base_put_smid_default(ioc, smid);
739
740  out:
741
742         /* scsih callback handler */
743         mpt2sas_scsih_event_callback(ioc, msix_index, reply);
744
745         /* ctl callback handler */
746         mpt2sas_ctl_event_callback(ioc, msix_index, reply);
747
748         return 1;
749 }
750
751 /**
752  * _base_get_cb_idx - obtain the callback index
753  * @ioc: per adapter object
754  * @smid: system request message index
755  *
756  * Return callback index.
757  */
758 static u8
759 _base_get_cb_idx(struct MPT2SAS_ADAPTER *ioc, u16 smid)
760 {
761         int i;
762         u8 cb_idx;
763
764         if (smid < ioc->hi_priority_smid) {
765                 i = smid - 1;
766                 cb_idx = ioc->scsi_lookup[i].cb_idx;
767         } else if (smid < ioc->internal_smid) {
768                 i = smid - ioc->hi_priority_smid;
769                 cb_idx = ioc->hpr_lookup[i].cb_idx;
770         } else if (smid <= ioc->hba_queue_depth) {
771                 i = smid - ioc->internal_smid;
772                 cb_idx = ioc->internal_lookup[i].cb_idx;
773         } else
774                 cb_idx = 0xFF;
775         return cb_idx;
776 }
777
778 /**
779  * _base_mask_interrupts - disable interrupts
780  * @ioc: per adapter object
781  *
782  * Disabling ResetIRQ, Reply and Doorbell Interrupts
783  *
784  * Return nothing.
785  */
786 static void
787 _base_mask_interrupts(struct MPT2SAS_ADAPTER *ioc)
788 {
789         u32 him_register;
790
791         ioc->mask_interrupts = 1;
792         him_register = readl(&ioc->chip->HostInterruptMask);
793         him_register |= MPI2_HIM_DIM + MPI2_HIM_RIM + MPI2_HIM_RESET_IRQ_MASK;
794         writel(him_register, &ioc->chip->HostInterruptMask);
795         readl(&ioc->chip->HostInterruptMask);
796 }
797
798 /**
799  * _base_unmask_interrupts - enable interrupts
800  * @ioc: per adapter object
801  *
802  * Enabling only Reply Interrupts
803  *
804  * Return nothing.
805  */
806 static void
807 _base_unmask_interrupts(struct MPT2SAS_ADAPTER *ioc)
808 {
809         u32 him_register;
810
811         him_register = readl(&ioc->chip->HostInterruptMask);
812         him_register &= ~MPI2_HIM_RIM;
813         writel(him_register, &ioc->chip->HostInterruptMask);
814         ioc->mask_interrupts = 0;
815 }
816
817 union reply_descriptor {
818         u64 word;
819         struct {
820                 u32 low;
821                 u32 high;
822         } u;
823 };
824
825 /**
826  * _base_interrupt - MPT adapter (IOC) specific interrupt handler.
827  * @irq: irq number (not used)
828  * @bus_id: bus identifier cookie == pointer to MPT_ADAPTER structure
829  * @r: pt_regs pointer (not used)
830  *
831  * Return IRQ_HANDLE if processed, else IRQ_NONE.
832  */
833 static irqreturn_t
834 _base_interrupt(int irq, void *bus_id)
835 {
836         struct adapter_reply_queue *reply_q = bus_id;
837         union reply_descriptor rd;
838         u32 completed_cmds;
839         u8 request_desript_type;
840         u16 smid;
841         u8 cb_idx;
842         u32 reply;
843         u8 msix_index = reply_q->msix_index;
844         struct MPT2SAS_ADAPTER *ioc = reply_q->ioc;
845         Mpi2ReplyDescriptorsUnion_t *rpf;
846         u8 rc;
847
848         if (ioc->mask_interrupts)
849                 return IRQ_NONE;
850
851         if (!atomic_add_unless(&reply_q->busy, 1, 1))
852                 return IRQ_NONE;
853
854         rpf = &reply_q->reply_post_free[reply_q->reply_post_host_index];
855         request_desript_type = rpf->Default.ReplyFlags
856              & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
857         if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) {
858                 atomic_dec(&reply_q->busy);
859                 return IRQ_NONE;
860         }
861
862         completed_cmds = 0;
863         cb_idx = 0xFF;
864         do {
865                 rd.word = le64_to_cpu(rpf->Words);
866                 if (rd.u.low == UINT_MAX || rd.u.high == UINT_MAX)
867                         goto out;
868                 reply = 0;
869                 smid = le16_to_cpu(rpf->Default.DescriptorTypeDependent1);
870                 if (request_desript_type ==
871                     MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY) {
872                         reply = le32_to_cpu
873                                 (rpf->AddressReply.ReplyFrameAddress);
874                         if (reply > ioc->reply_dma_max_address ||
875                             reply < ioc->reply_dma_min_address)
876                                 reply = 0;
877                 } else if (request_desript_type ==
878                     MPI2_RPY_DESCRIPT_FLAGS_TARGET_COMMAND_BUFFER)
879                         goto next;
880                 else if (request_desript_type ==
881                     MPI2_RPY_DESCRIPT_FLAGS_TARGETASSIST_SUCCESS)
882                         goto next;
883                 if (smid)
884                         cb_idx = _base_get_cb_idx(ioc, smid);
885                 if (smid && cb_idx != 0xFF) {
886                         rc = mpt_callbacks[cb_idx](ioc, smid, msix_index,
887                             reply);
888                         if (reply)
889                                 _base_display_reply_info(ioc, smid, msix_index,
890                                     reply);
891                         if (rc)
892                                 mpt2sas_base_free_smid(ioc, smid);
893                 }
894                 if (!smid)
895                         _base_async_event(ioc, msix_index, reply);
896
897                 /* reply free queue handling */
898                 if (reply) {
899                         ioc->reply_free_host_index =
900                             (ioc->reply_free_host_index ==
901                             (ioc->reply_free_queue_depth - 1)) ?
902                             0 : ioc->reply_free_host_index + 1;
903                         ioc->reply_free[ioc->reply_free_host_index] =
904                             cpu_to_le32(reply);
905                         wmb();
906                         writel(ioc->reply_free_host_index,
907                             &ioc->chip->ReplyFreeHostIndex);
908                 }
909
910  next:
911
912                 rpf->Words = cpu_to_le64(ULLONG_MAX);
913                 reply_q->reply_post_host_index =
914                     (reply_q->reply_post_host_index ==
915                     (ioc->reply_post_queue_depth - 1)) ? 0 :
916                     reply_q->reply_post_host_index + 1;
917                 request_desript_type =
918                     reply_q->reply_post_free[reply_q->reply_post_host_index].
919                     Default.ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
920                 completed_cmds++;
921                 if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
922                         goto out;
923                 if (!reply_q->reply_post_host_index)
924                         rpf = reply_q->reply_post_free;
925                 else
926                         rpf++;
927         } while (1);
928
929  out:
930
931         if (!completed_cmds) {
932                 atomic_dec(&reply_q->busy);
933                 return IRQ_NONE;
934         }
935         wmb();
936         if (ioc->is_warpdrive) {
937                 writel(reply_q->reply_post_host_index,
938                 ioc->reply_post_host_index[msix_index]);
939                 atomic_dec(&reply_q->busy);
940                 return IRQ_HANDLED;
941         }
942         writel(reply_q->reply_post_host_index | (msix_index <<
943             MPI2_RPHI_MSIX_INDEX_SHIFT), &ioc->chip->ReplyPostHostIndex);
944         atomic_dec(&reply_q->busy);
945         return IRQ_HANDLED;
946 }
947
948 /**
949  * _base_is_controller_msix_enabled - is controller support muli-reply queues
950  * @ioc: per adapter object
951  *
952  */
953 static inline int
954 _base_is_controller_msix_enabled(struct MPT2SAS_ADAPTER *ioc)
955 {
956         return (ioc->facts.IOCCapabilities &
957             MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable;
958 }
959
960 /**
961  * mpt2sas_base_flush_reply_queues - flushing the MSIX reply queues
962  * @ioc: per adapter object
963  * Context: ISR conext
964  *
965  * Called when a Task Management request has completed. We want
966  * to flush the other reply queues so all the outstanding IO has been
967  * completed back to OS before we process the TM completetion.
968  *
969  * Return nothing.
970  */
971 void
972 mpt2sas_base_flush_reply_queues(struct MPT2SAS_ADAPTER *ioc)
973 {
974         struct adapter_reply_queue *reply_q;
975
976         /* If MSIX capability is turned off
977          * then multi-queues are not enabled
978          */
979         if (!_base_is_controller_msix_enabled(ioc))
980                 return;
981
982         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
983                 if (ioc->shost_recovery)
984                         return;
985                 /* TMs are on msix_index == 0 */
986                 if (reply_q->msix_index == 0)
987                         continue;
988                 _base_interrupt(reply_q->vector, (void *)reply_q);
989         }
990 }
991
992 /**
993  * mpt2sas_base_release_callback_handler - clear interrupt callback handler
994  * @cb_idx: callback index
995  *
996  * Return nothing.
997  */
998 void
999 mpt2sas_base_release_callback_handler(u8 cb_idx)
1000 {
1001         mpt_callbacks[cb_idx] = NULL;
1002 }
1003
1004 /**
1005  * mpt2sas_base_register_callback_handler - obtain index for the interrupt callback handler
1006  * @cb_func: callback function
1007  *
1008  * Returns cb_func.
1009  */
1010 u8
1011 mpt2sas_base_register_callback_handler(MPT_CALLBACK cb_func)
1012 {
1013         u8 cb_idx;
1014
1015         for (cb_idx = MPT_MAX_CALLBACKS-1; cb_idx; cb_idx--)
1016                 if (mpt_callbacks[cb_idx] == NULL)
1017                         break;
1018
1019         mpt_callbacks[cb_idx] = cb_func;
1020         return cb_idx;
1021 }
1022
1023 /**
1024  * mpt2sas_base_initialize_callback_handler - initialize the interrupt callback handler
1025  *
1026  * Return nothing.
1027  */
1028 void
1029 mpt2sas_base_initialize_callback_handler(void)
1030 {
1031         u8 cb_idx;
1032
1033         for (cb_idx = 0; cb_idx < MPT_MAX_CALLBACKS; cb_idx++)
1034                 mpt2sas_base_release_callback_handler(cb_idx);
1035 }
1036
1037 /**
1038  * mpt2sas_base_build_zero_len_sge - build zero length sg entry
1039  * @ioc: per adapter object
1040  * @paddr: virtual address for SGE
1041  *
1042  * Create a zero length scatter gather entry to insure the IOCs hardware has
1043  * something to use if the target device goes brain dead and tries
1044  * to send data even when none is asked for.
1045  *
1046  * Return nothing.
1047  */
1048 void
1049 mpt2sas_base_build_zero_len_sge(struct MPT2SAS_ADAPTER *ioc, void *paddr)
1050 {
1051         u32 flags_length = (u32)((MPI2_SGE_FLAGS_LAST_ELEMENT |
1052             MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST |
1053             MPI2_SGE_FLAGS_SIMPLE_ELEMENT) <<
1054             MPI2_SGE_FLAGS_SHIFT);
1055         ioc->base_add_sg_single(paddr, flags_length, -1);
1056 }
1057
1058 /**
1059  * _base_add_sg_single_32 - Place a simple 32 bit SGE at address pAddr.
1060  * @paddr: virtual address for SGE
1061  * @flags_length: SGE flags and data transfer length
1062  * @dma_addr: Physical address
1063  *
1064  * Return nothing.
1065  */
1066 static void
1067 _base_add_sg_single_32(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1068 {
1069         Mpi2SGESimple32_t *sgel = paddr;
1070
1071         flags_length |= (MPI2_SGE_FLAGS_32_BIT_ADDRESSING |
1072             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1073         sgel->FlagsLength = cpu_to_le32(flags_length);
1074         sgel->Address = cpu_to_le32(dma_addr);
1075 }
1076
1077
1078 /**
1079  * _base_add_sg_single_64 - Place a simple 64 bit SGE at address pAddr.
1080  * @paddr: virtual address for SGE
1081  * @flags_length: SGE flags and data transfer length
1082  * @dma_addr: Physical address
1083  *
1084  * Return nothing.
1085  */
1086 static void
1087 _base_add_sg_single_64(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1088 {
1089         Mpi2SGESimple64_t *sgel = paddr;
1090
1091         flags_length |= (MPI2_SGE_FLAGS_64_BIT_ADDRESSING |
1092             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1093         sgel->FlagsLength = cpu_to_le32(flags_length);
1094         sgel->Address = cpu_to_le64(dma_addr);
1095 }
1096
1097 #define convert_to_kb(x) ((x) << (PAGE_SHIFT - 10))
1098
1099 /**
1100  * _base_config_dma_addressing - set dma addressing
1101  * @ioc: per adapter object
1102  * @pdev: PCI device struct
1103  *
1104  * Returns 0 for success, non-zero for failure.
1105  */
1106 static int
1107 _base_config_dma_addressing(struct MPT2SAS_ADAPTER *ioc, struct pci_dev *pdev)
1108 {
1109         struct sysinfo s;
1110         char *desc = NULL;
1111
1112         if (sizeof(dma_addr_t) > 4) {
1113                 const uint64_t required_mask =
1114                     dma_get_required_mask(&pdev->dev);
1115                 if ((required_mask > DMA_BIT_MASK(32)) && !pci_set_dma_mask(pdev,
1116                     DMA_BIT_MASK(64)) && !pci_set_consistent_dma_mask(pdev,
1117                     DMA_BIT_MASK(64))) {
1118                         ioc->base_add_sg_single = &_base_add_sg_single_64;
1119                         ioc->sge_size = sizeof(Mpi2SGESimple64_t);
1120                         desc = "64";
1121                         goto out;
1122                 }
1123         }
1124
1125         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
1126             && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1127                 ioc->base_add_sg_single = &_base_add_sg_single_32;
1128                 ioc->sge_size = sizeof(Mpi2SGESimple32_t);
1129                 desc = "32";
1130         } else
1131                 return -ENODEV;
1132
1133  out:
1134         si_meminfo(&s);
1135         printk(MPT2SAS_INFO_FMT "%s BIT PCI BUS DMA ADDRESSING SUPPORTED, "
1136             "total mem (%ld kB)\n", ioc->name, desc, convert_to_kb(s.totalram));
1137
1138         return 0;
1139 }
1140
1141 /**
1142  * _base_check_enable_msix - checks MSIX capabable.
1143  * @ioc: per adapter object
1144  *
1145  * Check to see if card is capable of MSIX, and set number
1146  * of available msix vectors
1147  */
1148 static int
1149 _base_check_enable_msix(struct MPT2SAS_ADAPTER *ioc)
1150 {
1151         int base;
1152         u16 message_control;
1153
1154
1155         base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX);
1156         if (!base) {
1157                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "msix not "
1158                     "supported\n", ioc->name));
1159                 return -EINVAL;
1160         }
1161
1162         /* get msix vector count */
1163         /* NUMA_IO not supported for older controllers */
1164         if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2004 ||
1165             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 ||
1166             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_1 ||
1167             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_2 ||
1168             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_3 ||
1169             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_1 ||
1170             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_2)
1171                 ioc->msix_vector_count = 1;
1172         else {
1173                 pci_read_config_word(ioc->pdev, base + 2, &message_control);
1174                 ioc->msix_vector_count = (message_control & 0x3FF) + 1;
1175         }
1176         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "msix is supported, "
1177             "vector_count(%d)\n", ioc->name, ioc->msix_vector_count));
1178
1179         return 0;
1180 }
1181
1182 /**
1183  * _base_free_irq - free irq
1184  * @ioc: per adapter object
1185  *
1186  * Freeing respective reply_queue from the list.
1187  */
1188 static void
1189 _base_free_irq(struct MPT2SAS_ADAPTER *ioc)
1190 {
1191         struct adapter_reply_queue *reply_q, *next;
1192
1193         if (list_empty(&ioc->reply_queue_list))
1194                 return;
1195
1196         list_for_each_entry_safe(reply_q, next, &ioc->reply_queue_list, list) {
1197                 list_del(&reply_q->list);
1198                 synchronize_irq(reply_q->vector);
1199                 free_irq(reply_q->vector, reply_q);
1200                 kfree(reply_q);
1201         }
1202 }
1203
1204 /**
1205  * _base_request_irq - request irq
1206  * @ioc: per adapter object
1207  * @index: msix index into vector table
1208  * @vector: irq vector
1209  *
1210  * Inserting respective reply_queue into the list.
1211  */
1212 static int
1213 _base_request_irq(struct MPT2SAS_ADAPTER *ioc, u8 index, u32 vector)
1214 {
1215         struct adapter_reply_queue *reply_q;
1216         int r;
1217
1218         reply_q =  kzalloc(sizeof(struct adapter_reply_queue), GFP_KERNEL);
1219         if (!reply_q) {
1220                 printk(MPT2SAS_ERR_FMT "unable to allocate memory %d!\n",
1221                     ioc->name, (int)sizeof(struct adapter_reply_queue));
1222                 return -ENOMEM;
1223         }
1224         reply_q->ioc = ioc;
1225         reply_q->msix_index = index;
1226         reply_q->vector = vector;
1227         atomic_set(&reply_q->busy, 0);
1228         if (ioc->msix_enable)
1229                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d-msix%d",
1230                     MPT2SAS_DRIVER_NAME, ioc->id, index);
1231         else
1232                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d",
1233                     MPT2SAS_DRIVER_NAME, ioc->id);
1234         r = request_irq(vector, _base_interrupt, IRQF_SHARED, reply_q->name,
1235             reply_q);
1236         if (r) {
1237                 printk(MPT2SAS_ERR_FMT "unable to allocate interrupt %d!\n",
1238                     reply_q->name, vector);
1239                 kfree(reply_q);
1240                 return -EBUSY;
1241         }
1242
1243         INIT_LIST_HEAD(&reply_q->list);
1244         list_add_tail(&reply_q->list, &ioc->reply_queue_list);
1245         return 0;
1246 }
1247
1248 /**
1249  * _base_assign_reply_queues - assigning msix index for each cpu
1250  * @ioc: per adapter object
1251  *
1252  * The enduser would need to set the affinity via /proc/irq/#/smp_affinity
1253  *
1254  * It would nice if we could call irq_set_affinity, however it is not
1255  * an exported symbol
1256  */
1257 static void
1258 _base_assign_reply_queues(struct MPT2SAS_ADAPTER *ioc)
1259 {
1260         struct adapter_reply_queue *reply_q;
1261         int cpu_id;
1262         int cpu_grouping, loop, grouping, grouping_mod;
1263
1264         if (!_base_is_controller_msix_enabled(ioc))
1265                 return;
1266
1267         memset(ioc->cpu_msix_table, 0, ioc->cpu_msix_table_sz);
1268         /* when there are more cpus than available msix vectors,
1269          * then group cpus togeather on same irq
1270          */
1271         if (ioc->cpu_count > ioc->msix_vector_count) {
1272                 grouping = ioc->cpu_count / ioc->msix_vector_count;
1273                 grouping_mod = ioc->cpu_count % ioc->msix_vector_count;
1274                 if (grouping < 2 || (grouping == 2 && !grouping_mod))
1275                         cpu_grouping = 2;
1276                 else if (grouping < 4 || (grouping == 4 && !grouping_mod))
1277                         cpu_grouping = 4;
1278                 else if (grouping < 8 || (grouping == 8 && !grouping_mod))
1279                         cpu_grouping = 8;
1280                 else
1281                         cpu_grouping = 16;
1282         } else
1283                 cpu_grouping = 0;
1284
1285         loop = 0;
1286         reply_q = list_entry(ioc->reply_queue_list.next,
1287              struct adapter_reply_queue, list);
1288         for_each_online_cpu(cpu_id) {
1289                 if (!cpu_grouping) {
1290                         ioc->cpu_msix_table[cpu_id] = reply_q->msix_index;
1291                         reply_q = list_entry(reply_q->list.next,
1292                             struct adapter_reply_queue, list);
1293                 } else {
1294                         if (loop < cpu_grouping) {
1295                                 ioc->cpu_msix_table[cpu_id] =
1296                                         reply_q->msix_index;
1297                                 loop++;
1298                         } else {
1299                                 reply_q = list_entry(reply_q->list.next,
1300                                     struct adapter_reply_queue, list);
1301                                 ioc->cpu_msix_table[cpu_id] =
1302                                         reply_q->msix_index;
1303                                 loop = 1;
1304                         }
1305                 }
1306         }
1307 }
1308
1309 /**
1310  * _base_disable_msix - disables msix
1311  * @ioc: per adapter object
1312  *
1313  */
1314 static void
1315 _base_disable_msix(struct MPT2SAS_ADAPTER *ioc)
1316 {
1317         if (ioc->msix_enable) {
1318                 pci_disable_msix(ioc->pdev);
1319                 ioc->msix_enable = 0;
1320         }
1321 }
1322
1323 /**
1324  * _base_enable_msix - enables msix, failback to io_apic
1325  * @ioc: per adapter object
1326  *
1327  */
1328 static int
1329 _base_enable_msix(struct MPT2SAS_ADAPTER *ioc)
1330 {
1331         struct msix_entry *entries, *a;
1332         int r;
1333         int i;
1334         u8 try_msix = 0;
1335
1336         INIT_LIST_HEAD(&ioc->reply_queue_list);
1337
1338         if (msix_disable == -1 || msix_disable == 0)
1339                 try_msix = 1;
1340
1341         if (!try_msix)
1342                 goto try_ioapic;
1343
1344         if (_base_check_enable_msix(ioc) != 0)
1345                 goto try_ioapic;
1346
1347         ioc->reply_queue_count = min_t(u8, ioc->cpu_count,
1348             ioc->msix_vector_count);
1349
1350         entries = kcalloc(ioc->reply_queue_count, sizeof(struct msix_entry),
1351             GFP_KERNEL);
1352         if (!entries) {
1353                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "kcalloc "
1354                     "failed @ at %s:%d/%s() !!!\n", ioc->name, __FILE__,
1355                     __LINE__, __func__));
1356                 goto try_ioapic;
1357         }
1358
1359         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++)
1360                 a->entry = i;
1361
1362         r = pci_enable_msix(ioc->pdev, entries, ioc->reply_queue_count);
1363         if (r) {
1364                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "pci_enable_msix "
1365                     "failed (r=%d) !!!\n", ioc->name, r));
1366                 kfree(entries);
1367                 goto try_ioapic;
1368         }
1369
1370         ioc->msix_enable = 1;
1371         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++) {
1372                 r = _base_request_irq(ioc, i, a->vector);
1373                 if (r) {
1374                         _base_free_irq(ioc);
1375                         _base_disable_msix(ioc);
1376                         kfree(entries);
1377                         goto try_ioapic;
1378                 }
1379         }
1380
1381         kfree(entries);
1382         return 0;
1383
1384 /* failback to io_apic interrupt routing */
1385  try_ioapic:
1386
1387         r = _base_request_irq(ioc, 0, ioc->pdev->irq);
1388
1389         return r;
1390 }
1391
1392 /**
1393  * mpt2sas_base_map_resources - map in controller resources (io/irq/memap)
1394  * @ioc: per adapter object
1395  *
1396  * Returns 0 for success, non-zero for failure.
1397  */
1398 int
1399 mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
1400 {
1401         struct pci_dev *pdev = ioc->pdev;
1402         u32 memap_sz;
1403         u32 pio_sz;
1404         int i, r = 0;
1405         u64 pio_chip = 0;
1406         u64 chip_phys = 0;
1407         struct adapter_reply_queue *reply_q;
1408
1409         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n",
1410             ioc->name, __func__));
1411
1412         ioc->bars = pci_select_bars(pdev, IORESOURCE_MEM);
1413         if (pci_enable_device_mem(pdev)) {
1414                 printk(MPT2SAS_WARN_FMT "pci_enable_device_mem: "
1415                     "failed\n", ioc->name);
1416                 return -ENODEV;
1417         }
1418
1419
1420         if (pci_request_selected_regions(pdev, ioc->bars,
1421             MPT2SAS_DRIVER_NAME)) {
1422                 printk(MPT2SAS_WARN_FMT "pci_request_selected_regions: "
1423                     "failed\n", ioc->name);
1424                 r = -ENODEV;
1425                 goto out_fail;
1426         }
1427
1428         /* AER (Advanced Error Reporting) hooks */
1429         pci_enable_pcie_error_reporting(pdev);
1430
1431         pci_set_master(pdev);
1432
1433         if (_base_config_dma_addressing(ioc, pdev) != 0) {
1434                 printk(MPT2SAS_WARN_FMT "no suitable DMA mask for %s\n",
1435                     ioc->name, pci_name(pdev));
1436                 r = -ENODEV;
1437                 goto out_fail;
1438         }
1439
1440         for (i = 0, memap_sz = 0, pio_sz = 0 ; i < DEVICE_COUNT_RESOURCE; i++) {
1441                 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
1442                         if (pio_sz)
1443                                 continue;
1444                         pio_chip = (u64)pci_resource_start(pdev, i);
1445                         pio_sz = pci_resource_len(pdev, i);
1446                 } else {
1447                         if (memap_sz)
1448                                 continue;
1449                         /* verify memory resource is valid before using */
1450                         if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
1451                                 ioc->chip_phys = pci_resource_start(pdev, i);
1452                                 chip_phys = (u64)ioc->chip_phys;
1453                                 memap_sz = pci_resource_len(pdev, i);
1454                                 ioc->chip = ioremap(ioc->chip_phys, memap_sz);
1455                                 if (ioc->chip == NULL) {
1456                                         printk(MPT2SAS_ERR_FMT "unable to map "
1457                                             "adapter memory!\n", ioc->name);
1458                                         r = -EINVAL;
1459                                         goto out_fail;
1460                                 }
1461                         }
1462                 }
1463         }
1464
1465         _base_mask_interrupts(ioc);
1466         r = _base_enable_msix(ioc);
1467         if (r)
1468                 goto out_fail;
1469
1470         list_for_each_entry(reply_q, &ioc->reply_queue_list, list)
1471                 printk(MPT2SAS_INFO_FMT "%s: IRQ %d\n",
1472                     reply_q->name,  ((ioc->msix_enable) ? "PCI-MSI-X enabled" :
1473                     "IO-APIC enabled"), reply_q->vector);
1474
1475         printk(MPT2SAS_INFO_FMT "iomem(0x%016llx), mapped(0x%p), size(%d)\n",
1476             ioc->name, (unsigned long long)chip_phys, ioc->chip, memap_sz);
1477         printk(MPT2SAS_INFO_FMT "ioport(0x%016llx), size(%d)\n",
1478             ioc->name, (unsigned long long)pio_chip, pio_sz);
1479
1480         /* Save PCI configuration state for recovery from PCI AER/EEH errors */
1481         pci_save_state(pdev);
1482
1483         return 0;
1484
1485  out_fail:
1486         if (ioc->chip_phys)
1487                 iounmap(ioc->chip);
1488         ioc->chip_phys = 0;
1489         pci_release_selected_regions(ioc->pdev, ioc->bars);
1490         pci_disable_pcie_error_reporting(pdev);
1491         pci_disable_device(pdev);
1492         return r;
1493 }
1494
1495 /**
1496  * mpt2sas_base_get_msg_frame - obtain request mf pointer
1497  * @ioc: per adapter object
1498  * @smid: system request message index(smid zero is invalid)
1499  *
1500  * Returns virt pointer to message frame.
1501  */
1502 void *
1503 mpt2sas_base_get_msg_frame(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1504 {
1505         return (void *)(ioc->request + (smid * ioc->request_sz));
1506 }
1507
1508 /**
1509  * mpt2sas_base_get_sense_buffer - obtain a sense buffer assigned to a mf request
1510  * @ioc: per adapter object
1511  * @smid: system request message index
1512  *
1513  * Returns virt pointer to sense buffer.
1514  */
1515 void *
1516 mpt2sas_base_get_sense_buffer(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1517 {
1518         return (void *)(ioc->sense + ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1519 }
1520
1521 /**
1522  * mpt2sas_base_get_sense_buffer_dma - obtain a sense buffer assigned to a mf request
1523  * @ioc: per adapter object
1524  * @smid: system request message index
1525  *
1526  * Returns phys pointer to the low 32bit address of the sense buffer.
1527  */
1528 __le32
1529 mpt2sas_base_get_sense_buffer_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1530 {
1531         return cpu_to_le32(ioc->sense_dma +
1532                         ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1533 }
1534
1535 /**
1536  * mpt2sas_base_get_reply_virt_addr - obtain reply frames virt address
1537  * @ioc: per adapter object
1538  * @phys_addr: lower 32 physical addr of the reply
1539  *
1540  * Converts 32bit lower physical addr into a virt address.
1541  */
1542 void *
1543 mpt2sas_base_get_reply_virt_addr(struct MPT2SAS_ADAPTER *ioc, u32 phys_addr)
1544 {
1545         if (!phys_addr)
1546                 return NULL;
1547         return ioc->reply + (phys_addr - (u32)ioc->reply_dma);
1548 }
1549
1550 /**
1551  * mpt2sas_base_get_smid - obtain a free smid from internal queue
1552  * @ioc: per adapter object
1553  * @cb_idx: callback index
1554  *
1555  * Returns smid (zero is invalid)
1556  */
1557 u16
1558 mpt2sas_base_get_smid(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1559 {
1560         unsigned long flags;
1561         struct request_tracker *request;
1562         u16 smid;
1563
1564         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1565         if (list_empty(&ioc->internal_free_list)) {
1566                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1567                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1568                     ioc->name, __func__);
1569                 return 0;
1570         }
1571
1572         request = list_entry(ioc->internal_free_list.next,
1573             struct request_tracker, tracker_list);
1574         request->cb_idx = cb_idx;
1575         smid = request->smid;
1576         list_del(&request->tracker_list);
1577         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1578         return smid;
1579 }
1580
1581 /**
1582  * mpt2sas_base_get_smid_scsiio - obtain a free smid from scsiio queue
1583  * @ioc: per adapter object
1584  * @cb_idx: callback index
1585  * @scmd: pointer to scsi command object
1586  *
1587  * Returns smid (zero is invalid)
1588  */
1589 u16
1590 mpt2sas_base_get_smid_scsiio(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx,
1591     struct scsi_cmnd *scmd)
1592 {
1593         unsigned long flags;
1594         struct scsiio_tracker *request;
1595         u16 smid;
1596
1597         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1598         if (list_empty(&ioc->free_list)) {
1599                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1600                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1601                     ioc->name, __func__);
1602                 return 0;
1603         }
1604
1605         request = list_entry(ioc->free_list.next,
1606             struct scsiio_tracker, tracker_list);
1607         request->scmd = scmd;
1608         request->cb_idx = cb_idx;
1609         smid = request->smid;
1610         list_del(&request->tracker_list);
1611         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1612         return smid;
1613 }
1614
1615 /**
1616  * mpt2sas_base_get_smid_hpr - obtain a free smid from hi-priority queue
1617  * @ioc: per adapter object
1618  * @cb_idx: callback index
1619  *
1620  * Returns smid (zero is invalid)
1621  */
1622 u16
1623 mpt2sas_base_get_smid_hpr(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1624 {
1625         unsigned long flags;
1626         struct request_tracker *request;
1627         u16 smid;
1628
1629         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1630         if (list_empty(&ioc->hpr_free_list)) {
1631                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1632                 return 0;
1633         }
1634
1635         request = list_entry(ioc->hpr_free_list.next,
1636             struct request_tracker, tracker_list);
1637         request->cb_idx = cb_idx;
1638         smid = request->smid;
1639         list_del(&request->tracker_list);
1640         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1641         return smid;
1642 }
1643
1644
1645 /**
1646  * mpt2sas_base_free_smid - put smid back on free_list
1647  * @ioc: per adapter object
1648  * @smid: system request message index
1649  *
1650  * Return nothing.
1651  */
1652 void
1653 mpt2sas_base_free_smid(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1654 {
1655         unsigned long flags;
1656         int i;
1657         struct chain_tracker *chain_req, *next;
1658
1659         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1660         if (smid < ioc->hi_priority_smid) {
1661                 /* scsiio queue */
1662                 i = smid - 1;
1663                 if (!list_empty(&ioc->scsi_lookup[i].chain_list)) {
1664                         list_for_each_entry_safe(chain_req, next,
1665                             &ioc->scsi_lookup[i].chain_list, tracker_list) {
1666                                 list_del_init(&chain_req->tracker_list);
1667                                 list_add_tail(&chain_req->tracker_list,
1668                                     &ioc->free_chain_list);
1669                         }
1670                 }
1671                 ioc->scsi_lookup[i].cb_idx = 0xFF;
1672                 ioc->scsi_lookup[i].scmd = NULL;
1673                 ioc->scsi_lookup[i].direct_io = 0;
1674                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
1675                     &ioc->free_list);
1676                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1677
1678                 /*
1679                  * See _wait_for_commands_to_complete() call with regards
1680                  * to this code.
1681                  */
1682                 if (ioc->shost_recovery && ioc->pending_io_count) {
1683                         if (ioc->pending_io_count == 1)
1684                                 wake_up(&ioc->reset_wq);
1685                         ioc->pending_io_count--;
1686                 }
1687                 return;
1688         } else if (smid < ioc->internal_smid) {
1689                 /* hi-priority */
1690                 i = smid - ioc->hi_priority_smid;
1691                 ioc->hpr_lookup[i].cb_idx = 0xFF;
1692                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
1693                     &ioc->hpr_free_list);
1694         } else if (smid <= ioc->hba_queue_depth) {
1695                 /* internal queue */
1696                 i = smid - ioc->internal_smid;
1697                 ioc->internal_lookup[i].cb_idx = 0xFF;
1698                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
1699                     &ioc->internal_free_list);
1700         }
1701         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1702 }
1703
1704 /**
1705  * _base_writeq - 64 bit write to MMIO
1706  * @ioc: per adapter object
1707  * @b: data payload
1708  * @addr: address in MMIO space
1709  * @writeq_lock: spin lock
1710  *
1711  * Glue for handling an atomic 64 bit word to MMIO. This special handling takes
1712  * care of 32 bit environment where its not quarenteed to send the entire word
1713  * in one transfer.
1714  */
1715 #ifndef writeq
1716 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1717     spinlock_t *writeq_lock)
1718 {
1719         unsigned long flags;
1720         __u64 data_out = cpu_to_le64(b);
1721
1722         spin_lock_irqsave(writeq_lock, flags);
1723         writel((u32)(data_out), addr);
1724         writel((u32)(data_out >> 32), (addr + 4));
1725         spin_unlock_irqrestore(writeq_lock, flags);
1726 }
1727 #else
1728 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1729     spinlock_t *writeq_lock)
1730 {
1731         writeq(cpu_to_le64(b), addr);
1732 }
1733 #endif
1734
1735 static inline u8
1736 _base_get_msix_index(struct MPT2SAS_ADAPTER *ioc)
1737 {
1738         return ioc->cpu_msix_table[smp_processor_id()];
1739 }
1740
1741 /**
1742  * mpt2sas_base_put_smid_scsi_io - send SCSI_IO request to firmware
1743  * @ioc: per adapter object
1744  * @smid: system request message index
1745  * @handle: device handle
1746  *
1747  * Return nothing.
1748  */
1749 void
1750 mpt2sas_base_put_smid_scsi_io(struct MPT2SAS_ADAPTER *ioc, u16 smid, u16 handle)
1751 {
1752         Mpi2RequestDescriptorUnion_t descriptor;
1753         u64 *request = (u64 *)&descriptor;
1754
1755
1756         descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
1757         descriptor.SCSIIO.MSIxIndex =  _base_get_msix_index(ioc);
1758         descriptor.SCSIIO.SMID = cpu_to_le16(smid);
1759         descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
1760         descriptor.SCSIIO.LMID = 0;
1761         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1762             &ioc->scsi_lookup_lock);
1763 }
1764
1765
1766 /**
1767  * mpt2sas_base_put_smid_hi_priority - send Task Management request to firmware
1768  * @ioc: per adapter object
1769  * @smid: system request message index
1770  *
1771  * Return nothing.
1772  */
1773 void
1774 mpt2sas_base_put_smid_hi_priority(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1775 {
1776         Mpi2RequestDescriptorUnion_t descriptor;
1777         u64 *request = (u64 *)&descriptor;
1778
1779         descriptor.HighPriority.RequestFlags =
1780             MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY;
1781         descriptor.HighPriority.MSIxIndex =  0;
1782         descriptor.HighPriority.SMID = cpu_to_le16(smid);
1783         descriptor.HighPriority.LMID = 0;
1784         descriptor.HighPriority.Reserved1 = 0;
1785         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1786             &ioc->scsi_lookup_lock);
1787 }
1788
1789 /**
1790  * mpt2sas_base_put_smid_default - Default, primarily used for config pages
1791  * @ioc: per adapter object
1792  * @smid: system request message index
1793  *
1794  * Return nothing.
1795  */
1796 void
1797 mpt2sas_base_put_smid_default(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1798 {
1799         Mpi2RequestDescriptorUnion_t descriptor;
1800         u64 *request = (u64 *)&descriptor;
1801
1802         descriptor.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
1803         descriptor.Default.MSIxIndex =  _base_get_msix_index(ioc);
1804         descriptor.Default.SMID = cpu_to_le16(smid);
1805         descriptor.Default.LMID = 0;
1806         descriptor.Default.DescriptorTypeDependent = 0;
1807         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1808             &ioc->scsi_lookup_lock);
1809 }
1810
1811 /**
1812  * mpt2sas_base_put_smid_target_assist - send Target Assist/Status to firmware
1813  * @ioc: per adapter object
1814  * @smid: system request message index
1815  * @io_index: value used to track the IO
1816  *
1817  * Return nothing.
1818  */
1819 void
1820 mpt2sas_base_put_smid_target_assist(struct MPT2SAS_ADAPTER *ioc, u16 smid,
1821     u16 io_index)
1822 {
1823         Mpi2RequestDescriptorUnion_t descriptor;
1824         u64 *request = (u64 *)&descriptor;
1825
1826         descriptor.SCSITarget.RequestFlags =
1827             MPI2_REQ_DESCRIPT_FLAGS_SCSI_TARGET;
1828         descriptor.SCSITarget.MSIxIndex =  _base_get_msix_index(ioc);
1829         descriptor.SCSITarget.SMID = cpu_to_le16(smid);
1830         descriptor.SCSITarget.LMID = 0;
1831         descriptor.SCSITarget.IoIndex = cpu_to_le16(io_index);
1832         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1833             &ioc->scsi_lookup_lock);
1834 }
1835
1836 /**
1837  * _base_display_dell_branding - Disply branding string
1838  * @ioc: per adapter object
1839  *
1840  * Return nothing.
1841  */
1842 static void
1843 _base_display_dell_branding(struct MPT2SAS_ADAPTER *ioc)
1844 {
1845         char dell_branding[MPT2SAS_DELL_BRANDING_SIZE];
1846
1847         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_DELL)
1848                 return;
1849
1850         memset(dell_branding, 0, MPT2SAS_DELL_BRANDING_SIZE);
1851         switch (ioc->pdev->subsystem_device) {
1852         case MPT2SAS_DELL_6GBPS_SAS_HBA_SSDID:
1853                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_HBA_BRANDING,
1854                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1855                 break;
1856         case MPT2SAS_DELL_PERC_H200_ADAPTER_SSDID:
1857                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_ADAPTER_BRANDING,
1858                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1859                 break;
1860         case MPT2SAS_DELL_PERC_H200_INTEGRATED_SSDID:
1861                 strncpy(dell_branding,
1862                     MPT2SAS_DELL_PERC_H200_INTEGRATED_BRANDING,
1863                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1864                 break;
1865         case MPT2SAS_DELL_PERC_H200_MODULAR_SSDID:
1866                 strncpy(dell_branding,
1867                     MPT2SAS_DELL_PERC_H200_MODULAR_BRANDING,
1868                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1869                 break;
1870         case MPT2SAS_DELL_PERC_H200_EMBEDDED_SSDID:
1871                 strncpy(dell_branding,
1872                     MPT2SAS_DELL_PERC_H200_EMBEDDED_BRANDING,
1873                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1874                 break;
1875         case MPT2SAS_DELL_PERC_H200_SSDID:
1876                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_BRANDING,
1877                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1878                 break;
1879         case MPT2SAS_DELL_6GBPS_SAS_SSDID:
1880                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_BRANDING,
1881                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1882                 break;
1883         default:
1884                 sprintf(dell_branding, "0x%4X", ioc->pdev->subsystem_device);
1885                 break;
1886         }
1887
1888         printk(MPT2SAS_INFO_FMT "%s: Vendor(0x%04X), Device(0x%04X),"
1889             " SSVID(0x%04X), SSDID(0x%04X)\n", ioc->name, dell_branding,
1890             ioc->pdev->vendor, ioc->pdev->device, ioc->pdev->subsystem_vendor,
1891             ioc->pdev->subsystem_device);
1892 }
1893
1894 /**
1895  * _base_display_intel_branding - Display branding string
1896  * @ioc: per adapter object
1897  *
1898  * Return nothing.
1899  */
1900 static void
1901 _base_display_intel_branding(struct MPT2SAS_ADAPTER *ioc)
1902 {
1903         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1904                 return;
1905
1906         switch (ioc->pdev->device) {
1907         case MPI2_MFGPAGE_DEVID_SAS2008:
1908                 switch (ioc->pdev->subsystem_device) {
1909                 case MPT2SAS_INTEL_RMS2LL080_SSDID:
1910                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1911                             MPT2SAS_INTEL_RMS2LL080_BRANDING);
1912                         break;
1913                 case MPT2SAS_INTEL_RMS2LL040_SSDID:
1914                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1915                             MPT2SAS_INTEL_RMS2LL040_BRANDING);
1916                         break;
1917                 default:
1918                         break;
1919                 }
1920         case MPI2_MFGPAGE_DEVID_SAS2308_2:
1921                 switch (ioc->pdev->subsystem_device) {
1922                 case MPT2SAS_INTEL_RS25GB008_SSDID:
1923                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1924                             MPT2SAS_INTEL_RS25GB008_BRANDING);
1925                         break;
1926                 default:
1927                         break;
1928                 }
1929         default:
1930                 break;
1931         }
1932 }
1933
1934 /**
1935  * _base_display_hp_branding - Display branding string
1936  * @ioc: per adapter object
1937  *
1938  * Return nothing.
1939  */
1940 static void
1941 _base_display_hp_branding(struct MPT2SAS_ADAPTER *ioc)
1942 {
1943         if (ioc->pdev->subsystem_vendor != MPT2SAS_HP_3PAR_SSVID)
1944                 return;
1945
1946         switch (ioc->pdev->device) {
1947         case MPI2_MFGPAGE_DEVID_SAS2004:
1948                 switch (ioc->pdev->subsystem_device) {
1949                 case MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_SSDID:
1950                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1951                             MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_BRANDING);
1952                         break;
1953                 default:
1954                         break;
1955                 }
1956         case MPI2_MFGPAGE_DEVID_SAS2308_2:
1957                 switch (ioc->pdev->subsystem_device) {
1958                 case MPT2SAS_HP_2_4_INTERNAL_SSDID:
1959                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1960                             MPT2SAS_HP_2_4_INTERNAL_BRANDING);
1961                         break;
1962                 case MPT2SAS_HP_2_4_EXTERNAL_SSDID:
1963                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1964                             MPT2SAS_HP_2_4_EXTERNAL_BRANDING);
1965                         break;
1966                 case MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_SSDID:
1967                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1968                             MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_BRANDING);
1969                         break;
1970                 case MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_SSDID:
1971                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1972                             MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_BRANDING);
1973                         break;
1974                 default:
1975                         break;
1976                 }
1977         default:
1978                 break;
1979         }
1980 }
1981
1982 /**
1983  * _base_display_ioc_capabilities - Disply IOC's capabilities.
1984  * @ioc: per adapter object
1985  *
1986  * Return nothing.
1987  */
1988 static void
1989 _base_display_ioc_capabilities(struct MPT2SAS_ADAPTER *ioc)
1990 {
1991         int i = 0;
1992         char desc[16];
1993         u8 revision;
1994         u32 iounit_pg1_flags;
1995         u32 bios_version;
1996
1997         bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
1998         pci_read_config_byte(ioc->pdev, PCI_CLASS_REVISION, &revision);
1999         strncpy(desc, ioc->manu_pg0.ChipName, 16);
2000         printk(MPT2SAS_INFO_FMT "%s: FWVersion(%02d.%02d.%02d.%02d), "
2001            "ChipRevision(0x%02x), BiosVersion(%02d.%02d.%02d.%02d)\n",
2002             ioc->name, desc,
2003            (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2004            (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2005            (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2006            ioc->facts.FWVersion.Word & 0x000000FF,
2007            revision,
2008            (bios_version & 0xFF000000) >> 24,
2009            (bios_version & 0x00FF0000) >> 16,
2010            (bios_version & 0x0000FF00) >> 8,
2011             bios_version & 0x000000FF);
2012
2013         _base_display_dell_branding(ioc);
2014         _base_display_intel_branding(ioc);
2015         _base_display_hp_branding(ioc);
2016
2017         printk(MPT2SAS_INFO_FMT "Protocol=(", ioc->name);
2018
2019         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR) {
2020                 printk("Initiator");
2021                 i++;
2022         }
2023
2024         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_TARGET) {
2025                 printk("%sTarget", i ? "," : "");
2026                 i++;
2027         }
2028
2029         i = 0;
2030         printk("), ");
2031         printk("Capabilities=(");
2032
2033         if (!ioc->hide_ir_msg) {
2034                 if (ioc->facts.IOCCapabilities &
2035                     MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID) {
2036                         printk("Raid");
2037                         i++;
2038                 }
2039         }
2040
2041         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR) {
2042                 printk("%sTLR", i ? "," : "");
2043                 i++;
2044         }
2045
2046         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_MULTICAST) {
2047                 printk("%sMulticast", i ? "," : "");
2048                 i++;
2049         }
2050
2051         if (ioc->facts.IOCCapabilities &
2052             MPI2_IOCFACTS_CAPABILITY_BIDIRECTIONAL_TARGET) {
2053                 printk("%sBIDI Target", i ? "," : "");
2054                 i++;
2055         }
2056
2057         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP) {
2058                 printk("%sEEDP", i ? "," : "");
2059                 i++;
2060         }
2061
2062         if (ioc->facts.IOCCapabilities &
2063             MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) {
2064                 printk("%sSnapshot Buffer", i ? "," : "");
2065                 i++;
2066         }
2067
2068         if (ioc->facts.IOCCapabilities &
2069             MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) {
2070                 printk("%sDiag Trace Buffer", i ? "," : "");
2071                 i++;
2072         }
2073
2074         if (ioc->facts.IOCCapabilities &
2075             MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) {
2076                 printk(KERN_INFO "%sDiag Extended Buffer", i ? "," : "");
2077                 i++;
2078         }
2079
2080         if (ioc->facts.IOCCapabilities &
2081             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING) {
2082                 printk("%sTask Set Full", i ? "," : "");
2083                 i++;
2084         }
2085
2086         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2087         if (!(iounit_pg1_flags & MPI2_IOUNITPAGE1_NATIVE_COMMAND_Q_DISABLE)) {
2088                 printk("%sNCQ", i ? "," : "");
2089                 i++;
2090         }
2091
2092         printk(")\n");
2093 }
2094
2095 /**
2096  * _base_update_missing_delay - change the missing delay timers
2097  * @ioc: per adapter object
2098  * @device_missing_delay: amount of time till device is reported missing
2099  * @io_missing_delay: interval IO is returned when there is a missing device
2100  *
2101  * Return nothing.
2102  *
2103  * Passed on the command line, this function will modify the device missing
2104  * delay, as well as the io missing delay. This should be called at driver
2105  * load time.
2106  */
2107 static void
2108 _base_update_missing_delay(struct MPT2SAS_ADAPTER *ioc,
2109         u16 device_missing_delay, u8 io_missing_delay)
2110 {
2111         u16 dmd, dmd_new, dmd_orignal;
2112         u8 io_missing_delay_original;
2113         u16 sz;
2114         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
2115         Mpi2ConfigReply_t mpi_reply;
2116         u8 num_phys = 0;
2117         u16 ioc_status;
2118
2119         mpt2sas_config_get_number_hba_phys(ioc, &num_phys);
2120         if (!num_phys)
2121                 return;
2122
2123         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (num_phys *
2124             sizeof(Mpi2SasIOUnit1PhyData_t));
2125         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
2126         if (!sas_iounit_pg1) {
2127                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2128                     ioc->name, __FILE__, __LINE__, __func__);
2129                 goto out;
2130         }
2131         if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
2132             sas_iounit_pg1, sz))) {
2133                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2134                     ioc->name, __FILE__, __LINE__, __func__);
2135                 goto out;
2136         }
2137         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
2138             MPI2_IOCSTATUS_MASK;
2139         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2140                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2141                     ioc->name, __FILE__, __LINE__, __func__);
2142                 goto out;
2143         }
2144
2145         /* device missing delay */
2146         dmd = sas_iounit_pg1->ReportDeviceMissingDelay;
2147         if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2148                 dmd = (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2149         else
2150                 dmd = dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2151         dmd_orignal = dmd;
2152         if (device_missing_delay > 0x7F) {
2153                 dmd = (device_missing_delay > 0x7F0) ? 0x7F0 :
2154                     device_missing_delay;
2155                 dmd = dmd / 16;
2156                 dmd |= MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16;
2157         } else
2158                 dmd = device_missing_delay;
2159         sas_iounit_pg1->ReportDeviceMissingDelay = dmd;
2160
2161         /* io missing delay */
2162         io_missing_delay_original = sas_iounit_pg1->IODeviceMissingDelay;
2163         sas_iounit_pg1->IODeviceMissingDelay = io_missing_delay;
2164
2165         if (!mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
2166             sz)) {
2167                 if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2168                         dmd_new = (dmd &
2169                             MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2170                 else
2171                         dmd_new =
2172                     dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2173                 printk(MPT2SAS_INFO_FMT "device_missing_delay: old(%d), "
2174                     "new(%d)\n", ioc->name, dmd_orignal, dmd_new);
2175                 printk(MPT2SAS_INFO_FMT "ioc_missing_delay: old(%d), "
2176                     "new(%d)\n", ioc->name, io_missing_delay_original,
2177                     io_missing_delay);
2178                 ioc->device_missing_delay = dmd_new;
2179                 ioc->io_missing_delay = io_missing_delay;
2180         }
2181
2182 out:
2183         kfree(sas_iounit_pg1);
2184 }
2185
2186 /**
2187  * _base_static_config_pages - static start of day config pages
2188  * @ioc: per adapter object
2189  *
2190  * Return nothing.
2191  */
2192 static void
2193 _base_static_config_pages(struct MPT2SAS_ADAPTER *ioc)
2194 {
2195         Mpi2ConfigReply_t mpi_reply;
2196         u32 iounit_pg1_flags;
2197
2198         mpt2sas_config_get_manufacturing_pg0(ioc, &mpi_reply, &ioc->manu_pg0);
2199         if (ioc->ir_firmware)
2200                 mpt2sas_config_get_manufacturing_pg10(ioc, &mpi_reply,
2201                     &ioc->manu_pg10);
2202         mpt2sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2);
2203         mpt2sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3);
2204         mpt2sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8);
2205         mpt2sas_config_get_iounit_pg0(ioc, &mpi_reply, &ioc->iounit_pg0);
2206         mpt2sas_config_get_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2207         _base_display_ioc_capabilities(ioc);
2208
2209         /*
2210          * Enable task_set_full handling in iounit_pg1 when the
2211          * facts capabilities indicate that its supported.
2212          */
2213         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2214         if ((ioc->facts.IOCCapabilities &
2215             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING))
2216                 iounit_pg1_flags &=
2217                     ~MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2218         else
2219                 iounit_pg1_flags |=
2220                     MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2221         ioc->iounit_pg1.Flags = cpu_to_le32(iounit_pg1_flags);
2222         mpt2sas_config_set_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2223
2224 }
2225
2226 /**
2227  * _base_release_memory_pools - release memory
2228  * @ioc: per adapter object
2229  *
2230  * Free memory allocated from _base_allocate_memory_pools.
2231  *
2232  * Return nothing.
2233  */
2234 static void
2235 _base_release_memory_pools(struct MPT2SAS_ADAPTER *ioc)
2236 {
2237         int i;
2238
2239         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2240             __func__));
2241
2242         if (ioc->request) {
2243                 pci_free_consistent(ioc->pdev, ioc->request_dma_sz,
2244                     ioc->request,  ioc->request_dma);
2245                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "request_pool(0x%p)"
2246                     ": free\n", ioc->name, ioc->request));
2247                 ioc->request = NULL;
2248         }
2249
2250         if (ioc->sense) {
2251                 pci_pool_free(ioc->sense_dma_pool, ioc->sense, ioc->sense_dma);
2252                 if (ioc->sense_dma_pool)
2253                         pci_pool_destroy(ioc->sense_dma_pool);
2254                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_pool(0x%p)"
2255                     ": free\n", ioc->name, ioc->sense));
2256                 ioc->sense = NULL;
2257         }
2258
2259         if (ioc->reply) {
2260                 pci_pool_free(ioc->reply_dma_pool, ioc->reply, ioc->reply_dma);
2261                 if (ioc->reply_dma_pool)
2262                         pci_pool_destroy(ioc->reply_dma_pool);
2263                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_pool(0x%p)"
2264                      ": free\n", ioc->name, ioc->reply));
2265                 ioc->reply = NULL;
2266         }
2267
2268         if (ioc->reply_free) {
2269                 pci_pool_free(ioc->reply_free_dma_pool, ioc->reply_free,
2270                     ioc->reply_free_dma);
2271                 if (ioc->reply_free_dma_pool)
2272                         pci_pool_destroy(ioc->reply_free_dma_pool);
2273                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_pool"
2274                     "(0x%p): free\n", ioc->name, ioc->reply_free));
2275                 ioc->reply_free = NULL;
2276         }
2277
2278         if (ioc->reply_post_free) {
2279                 pci_pool_free(ioc->reply_post_free_dma_pool,
2280                     ioc->reply_post_free, ioc->reply_post_free_dma);
2281                 if (ioc->reply_post_free_dma_pool)
2282                         pci_pool_destroy(ioc->reply_post_free_dma_pool);
2283                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2284                     "reply_post_free_pool(0x%p): free\n", ioc->name,
2285                     ioc->reply_post_free));
2286                 ioc->reply_post_free = NULL;
2287         }
2288
2289         if (ioc->config_page) {
2290                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2291                     "config_page(0x%p): free\n", ioc->name,
2292                     ioc->config_page));
2293                 pci_free_consistent(ioc->pdev, ioc->config_page_sz,
2294                     ioc->config_page, ioc->config_page_dma);
2295         }
2296
2297         if (ioc->scsi_lookup) {
2298                 free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages);
2299                 ioc->scsi_lookup = NULL;
2300         }
2301         kfree(ioc->hpr_lookup);
2302         kfree(ioc->internal_lookup);
2303         if (ioc->chain_lookup) {
2304                 for (i = 0; i < ioc->chain_depth; i++) {
2305                         if (ioc->chain_lookup[i].chain_buffer)
2306                                 pci_pool_free(ioc->chain_dma_pool,
2307                                     ioc->chain_lookup[i].chain_buffer,
2308                                     ioc->chain_lookup[i].chain_buffer_dma);
2309                 }
2310                 if (ioc->chain_dma_pool)
2311                         pci_pool_destroy(ioc->chain_dma_pool);
2312         }
2313         if (ioc->chain_lookup) {
2314                 free_pages((ulong)ioc->chain_lookup, ioc->chain_pages);
2315                 ioc->chain_lookup = NULL;
2316         }
2317 }
2318
2319
2320 /**
2321  * _base_allocate_memory_pools - allocate start of day memory pools
2322  * @ioc: per adapter object
2323  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2324  *
2325  * Returns 0 success, anything else error
2326  */
2327 static int
2328 _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc,  int sleep_flag)
2329 {
2330         struct mpt2sas_facts *facts;
2331         u32 queue_size, queue_diff;
2332         u16 max_sge_elements;
2333         u16 num_of_reply_frames;
2334         u16 chains_needed_per_io;
2335         u32 sz, total_sz, reply_post_free_sz;
2336         u32 retry_sz;
2337         u16 max_request_credit;
2338         int i;
2339
2340         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2341             __func__));
2342
2343         retry_sz = 0;
2344         facts = &ioc->facts;
2345
2346         /* command line tunables  for max sgl entries */
2347         if (max_sgl_entries != -1) {
2348                 ioc->shost->sg_tablesize = (max_sgl_entries <
2349                     MPT2SAS_SG_DEPTH) ? max_sgl_entries :
2350                     MPT2SAS_SG_DEPTH;
2351         } else {
2352                 ioc->shost->sg_tablesize = MPT2SAS_SG_DEPTH;
2353         }
2354
2355         /* command line tunables  for max controller queue depth */
2356         if (max_queue_depth != -1)
2357                 max_request_credit = (max_queue_depth < facts->RequestCredit)
2358                     ? max_queue_depth : facts->RequestCredit;
2359         else
2360                 max_request_credit = facts->RequestCredit;
2361
2362         ioc->hba_queue_depth = max_request_credit;
2363         ioc->hi_priority_depth = facts->HighPriorityCredit;
2364         ioc->internal_depth = ioc->hi_priority_depth + 5;
2365
2366         /* request frame size */
2367         ioc->request_sz = facts->IOCRequestFrameSize * 4;
2368
2369         /* reply frame size */
2370         ioc->reply_sz = facts->ReplyFrameSize * 4;
2371
2372  retry_allocation:
2373         total_sz = 0;
2374         /* calculate number of sg elements left over in the 1st frame */
2375         max_sge_elements = ioc->request_sz - ((sizeof(Mpi2SCSIIORequest_t) -
2376             sizeof(Mpi2SGEIOUnion_t)) + ioc->sge_size);
2377         ioc->max_sges_in_main_message = max_sge_elements/ioc->sge_size;
2378
2379         /* now do the same for a chain buffer */
2380         max_sge_elements = ioc->request_sz - ioc->sge_size;
2381         ioc->max_sges_in_chain_message = max_sge_elements/ioc->sge_size;
2382
2383         ioc->chain_offset_value_for_main_message =
2384             ((sizeof(Mpi2SCSIIORequest_t) - sizeof(Mpi2SGEIOUnion_t)) +
2385              (ioc->max_sges_in_chain_message * ioc->sge_size)) / 4;
2386
2387         /*
2388          *  MPT2SAS_SG_DEPTH = CONFIG_FUSION_MAX_SGE
2389          */
2390         chains_needed_per_io = ((ioc->shost->sg_tablesize -
2391            ioc->max_sges_in_main_message)/ioc->max_sges_in_chain_message)
2392             + 1;
2393         if (chains_needed_per_io > facts->MaxChainDepth) {
2394                 chains_needed_per_io = facts->MaxChainDepth;
2395                 ioc->shost->sg_tablesize = min_t(u16,
2396                 ioc->max_sges_in_main_message + (ioc->max_sges_in_chain_message
2397                 * chains_needed_per_io), ioc->shost->sg_tablesize);
2398         }
2399         ioc->chains_needed_per_io = chains_needed_per_io;
2400
2401         /* reply free queue sizing - taking into account for events */
2402         num_of_reply_frames = ioc->hba_queue_depth + 32;
2403
2404         /* number of replies frames can't be a multiple of 16 */
2405         /* decrease number of reply frames by 1 */
2406         if (!(num_of_reply_frames % 16))
2407                 num_of_reply_frames--;
2408
2409         /* calculate number of reply free queue entries
2410          *  (must be multiple of 16)
2411          */
2412
2413         /* (we know reply_free_queue_depth is not a multiple of 16) */
2414         queue_size = num_of_reply_frames;
2415         queue_size += 16 - (queue_size % 16);
2416         ioc->reply_free_queue_depth = queue_size;
2417
2418         /* reply descriptor post queue sizing */
2419         /* this size should be the number of request frames + number of reply
2420          * frames
2421          */
2422
2423         queue_size = ioc->hba_queue_depth + num_of_reply_frames + 1;
2424         /* round up to 16 byte boundary */
2425         if (queue_size % 16)
2426                 queue_size += 16 - (queue_size % 16);
2427
2428         /* check against IOC maximum reply post queue depth */
2429         if (queue_size > facts->MaxReplyDescriptorPostQueueDepth) {
2430                 queue_diff = queue_size -
2431                     facts->MaxReplyDescriptorPostQueueDepth;
2432
2433                 /* round queue_diff up to multiple of 16 */
2434                 if (queue_diff % 16)
2435                         queue_diff += 16 - (queue_diff % 16);
2436
2437                 /* adjust hba_queue_depth, reply_free_queue_depth,
2438                  * and queue_size
2439                  */
2440                 ioc->hba_queue_depth -= (queue_diff / 2);
2441                 ioc->reply_free_queue_depth -= (queue_diff / 2);
2442                 queue_size = facts->MaxReplyDescriptorPostQueueDepth;
2443         }
2444         ioc->reply_post_queue_depth = queue_size;
2445
2446         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scatter gather: "
2447             "sge_in_main_msg(%d), sge_per_chain(%d), sge_per_io(%d), "
2448             "chains_per_io(%d)\n", ioc->name, ioc->max_sges_in_main_message,
2449             ioc->max_sges_in_chain_message, ioc->shost->sg_tablesize,
2450             ioc->chains_needed_per_io));
2451
2452         ioc->scsiio_depth = ioc->hba_queue_depth -
2453             ioc->hi_priority_depth - ioc->internal_depth;
2454
2455         /* set the scsi host can_queue depth
2456          * with some internal commands that could be outstanding
2457          */
2458         ioc->shost->can_queue = ioc->scsiio_depth - (2);
2459         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsi host: "
2460             "can_queue depth (%d)\n", ioc->name, ioc->shost->can_queue));
2461
2462         /* contiguous pool for request and chains, 16 byte align, one extra "
2463          * "frame for smid=0
2464          */
2465         ioc->chain_depth = ioc->chains_needed_per_io * ioc->scsiio_depth;
2466         sz = ((ioc->scsiio_depth + 1) * ioc->request_sz);
2467
2468         /* hi-priority queue */
2469         sz += (ioc->hi_priority_depth * ioc->request_sz);
2470
2471         /* internal queue */
2472         sz += (ioc->internal_depth * ioc->request_sz);
2473
2474         ioc->request_dma_sz = sz;
2475         ioc->request = pci_alloc_consistent(ioc->pdev, sz, &ioc->request_dma);
2476         if (!ioc->request) {
2477                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2478                     "failed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2479                     "total(%d kB)\n", ioc->name, ioc->hba_queue_depth,
2480                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2481                 if (ioc->scsiio_depth < MPT2SAS_SAS_QUEUE_DEPTH)
2482                         goto out;
2483                 retry_sz += 64;
2484                 ioc->hba_queue_depth = max_request_credit - retry_sz;
2485                 goto retry_allocation;
2486         }
2487
2488         if (retry_sz)
2489                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2490                     "succeed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2491                     "total(%d kb)\n", ioc->name, ioc->hba_queue_depth,
2492                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2493
2494
2495         /* hi-priority queue */
2496         ioc->hi_priority = ioc->request + ((ioc->scsiio_depth + 1) *
2497             ioc->request_sz);
2498         ioc->hi_priority_dma = ioc->request_dma + ((ioc->scsiio_depth + 1) *
2499             ioc->request_sz);
2500
2501         /* internal queue */
2502         ioc->internal = ioc->hi_priority + (ioc->hi_priority_depth *
2503             ioc->request_sz);
2504         ioc->internal_dma = ioc->hi_priority_dma + (ioc->hi_priority_depth *
2505             ioc->request_sz);
2506
2507
2508         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool(0x%p): "
2509             "depth(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2510             ioc->request, ioc->hba_queue_depth, ioc->request_sz,
2511             (ioc->hba_queue_depth * ioc->request_sz)/1024));
2512         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool: dma(0x%llx)\n",
2513             ioc->name, (unsigned long long) ioc->request_dma));
2514         total_sz += sz;
2515
2516         sz = ioc->scsiio_depth * sizeof(struct scsiio_tracker);
2517         ioc->scsi_lookup_pages = get_order(sz);
2518         ioc->scsi_lookup = (struct scsiio_tracker *)__get_free_pages(
2519             GFP_KERNEL, ioc->scsi_lookup_pages);
2520         if (!ioc->scsi_lookup) {
2521                 printk(MPT2SAS_ERR_FMT "scsi_lookup: get_free_pages failed, "
2522                     "sz(%d)\n", ioc->name, (int)sz);
2523                 goto out;
2524         }
2525
2526         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsiio(0x%p): "
2527             "depth(%d)\n", ioc->name, ioc->request,
2528             ioc->scsiio_depth));
2529
2530         /* loop till the allocation succeeds */
2531         do {
2532                 sz = ioc->chain_depth * sizeof(struct chain_tracker);
2533                 ioc->chain_pages = get_order(sz);
2534                 ioc->chain_lookup = (struct chain_tracker *)__get_free_pages(
2535                     GFP_KERNEL, ioc->chain_pages);
2536                 if (ioc->chain_lookup == NULL)
2537                         ioc->chain_depth -= 100;
2538         } while (ioc->chain_lookup == NULL);
2539         ioc->chain_dma_pool = pci_pool_create("chain pool", ioc->pdev,
2540             ioc->request_sz, 16, 0);
2541         if (!ioc->chain_dma_pool) {
2542                 printk(MPT2SAS_ERR_FMT "chain_dma_pool: pci_pool_create "
2543                     "failed\n", ioc->name);
2544                 goto out;
2545         }
2546         for (i = 0; i < ioc->chain_depth; i++) {
2547                 ioc->chain_lookup[i].chain_buffer = pci_pool_alloc(
2548                     ioc->chain_dma_pool , GFP_KERNEL,
2549                     &ioc->chain_lookup[i].chain_buffer_dma);
2550                 if (!ioc->chain_lookup[i].chain_buffer) {
2551                         ioc->chain_depth = i;
2552                         goto chain_done;
2553                 }
2554                 total_sz += ioc->request_sz;
2555         }
2556 chain_done:
2557         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "chain pool depth"
2558             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2559             ioc->chain_depth, ioc->request_sz, ((ioc->chain_depth *
2560             ioc->request_sz))/1024));
2561
2562         /* initialize hi-priority queue smid's */
2563         ioc->hpr_lookup = kcalloc(ioc->hi_priority_depth,
2564             sizeof(struct request_tracker), GFP_KERNEL);
2565         if (!ioc->hpr_lookup) {
2566                 printk(MPT2SAS_ERR_FMT "hpr_lookup: kcalloc failed\n",
2567                     ioc->name);
2568                 goto out;
2569         }
2570         ioc->hi_priority_smid = ioc->scsiio_depth + 1;
2571         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hi_priority(0x%p): "
2572             "depth(%d), start smid(%d)\n", ioc->name, ioc->hi_priority,
2573             ioc->hi_priority_depth, ioc->hi_priority_smid));
2574
2575         /* initialize internal queue smid's */
2576         ioc->internal_lookup = kcalloc(ioc->internal_depth,
2577             sizeof(struct request_tracker), GFP_KERNEL);
2578         if (!ioc->internal_lookup) {
2579                 printk(MPT2SAS_ERR_FMT "internal_lookup: kcalloc failed\n",
2580                     ioc->name);
2581                 goto out;
2582         }
2583         ioc->internal_smid = ioc->hi_priority_smid + ioc->hi_priority_depth;
2584         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "internal(0x%p): "
2585             "depth(%d), start smid(%d)\n", ioc->name, ioc->internal,
2586              ioc->internal_depth, ioc->internal_smid));
2587
2588         /* sense buffers, 4 byte align */
2589         sz = ioc->scsiio_depth * SCSI_SENSE_BUFFERSIZE;
2590         ioc->sense_dma_pool = pci_pool_create("sense pool", ioc->pdev, sz, 4,
2591             0);
2592         if (!ioc->sense_dma_pool) {
2593                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_create failed\n",
2594                     ioc->name);
2595                 goto out;
2596         }
2597         ioc->sense = pci_pool_alloc(ioc->sense_dma_pool , GFP_KERNEL,
2598             &ioc->sense_dma);
2599         if (!ioc->sense) {
2600                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_alloc failed\n",
2601                     ioc->name);
2602                 goto out;
2603         }
2604         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
2605             "sense pool(0x%p): depth(%d), element_size(%d), pool_size"
2606             "(%d kB)\n", ioc->name, ioc->sense, ioc->scsiio_depth,
2607             SCSI_SENSE_BUFFERSIZE, sz/1024));
2608         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_dma(0x%llx)\n",
2609             ioc->name, (unsigned long long)ioc->sense_dma));
2610         total_sz += sz;
2611
2612         /* reply pool, 4 byte align */
2613         sz = ioc->reply_free_queue_depth * ioc->reply_sz;
2614         ioc->reply_dma_pool = pci_pool_create("reply pool", ioc->pdev, sz, 4,
2615             0);
2616         if (!ioc->reply_dma_pool) {
2617                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_create failed\n",
2618                     ioc->name);
2619                 goto out;
2620         }
2621         ioc->reply = pci_pool_alloc(ioc->reply_dma_pool , GFP_KERNEL,
2622             &ioc->reply_dma);
2623         if (!ioc->reply) {
2624                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_alloc failed\n",
2625                     ioc->name);
2626                 goto out;
2627         }
2628         ioc->reply_dma_min_address = (u32)(ioc->reply_dma);
2629         ioc->reply_dma_max_address = (u32)(ioc->reply_dma) + sz;
2630         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply pool(0x%p): depth"
2631             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name, ioc->reply,
2632             ioc->reply_free_queue_depth, ioc->reply_sz, sz/1024));
2633         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_dma(0x%llx)\n",
2634             ioc->name, (unsigned long long)ioc->reply_dma));
2635         total_sz += sz;
2636
2637         /* reply free queue, 16 byte align */
2638         sz = ioc->reply_free_queue_depth * 4;
2639         ioc->reply_free_dma_pool = pci_pool_create("reply_free pool",
2640             ioc->pdev, sz, 16, 0);
2641         if (!ioc->reply_free_dma_pool) {
2642                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_create "
2643                     "failed\n", ioc->name);
2644                 goto out;
2645         }
2646         ioc->reply_free = pci_pool_alloc(ioc->reply_free_dma_pool , GFP_KERNEL,
2647             &ioc->reply_free_dma);
2648         if (!ioc->reply_free) {
2649                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_alloc "
2650                     "failed\n", ioc->name);
2651                 goto out;
2652         }
2653         memset(ioc->reply_free, 0, sz);
2654         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free pool(0x%p): "
2655             "depth(%d), element_size(%d), pool_size(%d kB)\n", ioc->name,
2656             ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024));
2657         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_dma"
2658             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->reply_free_dma));
2659         total_sz += sz;
2660
2661         /* reply post queue, 16 byte align */
2662         reply_post_free_sz = ioc->reply_post_queue_depth *
2663             sizeof(Mpi2DefaultReplyDescriptor_t);
2664         if (_base_is_controller_msix_enabled(ioc))
2665                 sz = reply_post_free_sz * ioc->reply_queue_count;
2666         else
2667                 sz = reply_post_free_sz;
2668         ioc->reply_post_free_dma_pool = pci_pool_create("reply_post_free pool",
2669             ioc->pdev, sz, 16, 0);
2670         if (!ioc->reply_post_free_dma_pool) {
2671                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_create "
2672                     "failed\n", ioc->name);
2673                 goto out;
2674         }
2675         ioc->reply_post_free = pci_pool_alloc(ioc->reply_post_free_dma_pool ,
2676             GFP_KERNEL, &ioc->reply_post_free_dma);
2677         if (!ioc->reply_post_free) {
2678                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_alloc "
2679                     "failed\n", ioc->name);
2680                 goto out;
2681         }
2682         memset(ioc->reply_post_free, 0, sz);
2683         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply post free pool"
2684             "(0x%p): depth(%d), element_size(%d), pool_size(%d kB)\n",
2685             ioc->name, ioc->reply_post_free, ioc->reply_post_queue_depth, 8,
2686             sz/1024));
2687         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_post_free_dma = "
2688             "(0x%llx)\n", ioc->name, (unsigned long long)
2689             ioc->reply_post_free_dma));
2690         total_sz += sz;
2691
2692         ioc->config_page_sz = 512;
2693         ioc->config_page = pci_alloc_consistent(ioc->pdev,
2694             ioc->config_page_sz, &ioc->config_page_dma);
2695         if (!ioc->config_page) {
2696                 printk(MPT2SAS_ERR_FMT "config page: pci_pool_alloc "
2697                     "failed\n", ioc->name);
2698                 goto out;
2699         }
2700         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config page(0x%p): size"
2701             "(%d)\n", ioc->name, ioc->config_page, ioc->config_page_sz));
2702         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config_page_dma"
2703             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->config_page_dma));
2704         total_sz += ioc->config_page_sz;
2705
2706         printk(MPT2SAS_INFO_FMT "Allocated physical memory: size(%d kB)\n",
2707             ioc->name, total_sz/1024);
2708         printk(MPT2SAS_INFO_FMT "Current Controller Queue Depth(%d), "
2709             "Max Controller Queue Depth(%d)\n",
2710             ioc->name, ioc->shost->can_queue, facts->RequestCredit);
2711         printk(MPT2SAS_INFO_FMT "Scatter Gather Elements per IO(%d)\n",
2712             ioc->name, ioc->shost->sg_tablesize);
2713         return 0;
2714
2715  out:
2716         return -ENOMEM;
2717 }
2718
2719
2720 /**
2721  * mpt2sas_base_get_iocstate - Get the current state of a MPT adapter.
2722  * @ioc: Pointer to MPT_ADAPTER structure
2723  * @cooked: Request raw or cooked IOC state
2724  *
2725  * Returns all IOC Doorbell register bits if cooked==0, else just the
2726  * Doorbell bits in MPI_IOC_STATE_MASK.
2727  */
2728 u32
2729 mpt2sas_base_get_iocstate(struct MPT2SAS_ADAPTER *ioc, int cooked)
2730 {
2731         u32 s, sc;
2732
2733         s = readl(&ioc->chip->Doorbell);
2734         sc = s & MPI2_IOC_STATE_MASK;
2735         return cooked ? sc : s;
2736 }
2737
2738 /**
2739  * _base_wait_on_iocstate - waiting on a particular ioc state
2740  * @ioc_state: controller state { READY, OPERATIONAL, or RESET }
2741  * @timeout: timeout in second
2742  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2743  *
2744  * Returns 0 for success, non-zero for failure.
2745  */
2746 static int
2747 _base_wait_on_iocstate(struct MPT2SAS_ADAPTER *ioc, u32 ioc_state, int timeout,
2748     int sleep_flag)
2749 {
2750         u32 count, cntdn;
2751         u32 current_state;
2752
2753         count = 0;
2754         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2755         do {
2756                 current_state = mpt2sas_base_get_iocstate(ioc, 1);
2757                 if (current_state == ioc_state)
2758                         return 0;
2759                 if (count && current_state == MPI2_IOC_STATE_FAULT)
2760                         break;
2761                 if (sleep_flag == CAN_SLEEP)
2762                         msleep(1);
2763                 else
2764                         udelay(500);
2765                 count++;
2766         } while (--cntdn);
2767
2768         return current_state;
2769 }
2770
2771 /**
2772  * _base_wait_for_doorbell_int - waiting for controller interrupt(generated by
2773  * a write to the doorbell)
2774  * @ioc: per adapter object
2775  * @timeout: timeout in second
2776  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2777  *
2778  * Returns 0 for success, non-zero for failure.
2779  *
2780  * Notes: MPI2_HIS_IOC2SYS_DB_STATUS - set to one when IOC writes to doorbell.
2781  */
2782 static int
2783 _base_wait_for_doorbell_int(struct MPT2SAS_ADAPTER *ioc, int timeout,
2784     int sleep_flag)
2785 {
2786         u32 cntdn, count;
2787         u32 int_status;
2788
2789         count = 0;
2790         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2791         do {
2792                 int_status = readl(&ioc->chip->HostInterruptStatus);
2793                 if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2794                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2795                             "successful count(%d), timeout(%d)\n", ioc->name,
2796                             __func__, count, timeout));
2797                         return 0;
2798                 }
2799                 if (sleep_flag == CAN_SLEEP)
2800                         msleep(1);
2801                 else
2802                         udelay(500);
2803                 count++;
2804         } while (--cntdn);
2805
2806         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2807             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2808         return -EFAULT;
2809 }
2810
2811 /**
2812  * _base_wait_for_doorbell_ack - waiting for controller to read the doorbell.
2813  * @ioc: per adapter object
2814  * @timeout: timeout in second
2815  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2816  *
2817  * Returns 0 for success, non-zero for failure.
2818  *
2819  * Notes: MPI2_HIS_SYS2IOC_DB_STATUS - set to one when host writes to
2820  * doorbell.
2821  */
2822 static int
2823 _base_wait_for_doorbell_ack(struct MPT2SAS_ADAPTER *ioc, int timeout,
2824     int sleep_flag)
2825 {
2826         u32 cntdn, count;
2827         u32 int_status;
2828         u32 doorbell;
2829
2830         count = 0;
2831         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2832         do {
2833                 int_status = readl(&ioc->chip->HostInterruptStatus);
2834                 if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) {
2835                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2836                             "successful count(%d), timeout(%d)\n", ioc->name,
2837                             __func__, count, timeout));
2838                         return 0;
2839                 } else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2840                         doorbell = readl(&ioc->chip->Doorbell);
2841                         if ((doorbell & MPI2_IOC_STATE_MASK) ==
2842                             MPI2_IOC_STATE_FAULT) {
2843                                 mpt2sas_base_fault_info(ioc , doorbell);
2844                                 return -EFAULT;
2845                         }
2846                 } else if (int_status == 0xFFFFFFFF)
2847                         goto out;
2848
2849                 if (sleep_flag == CAN_SLEEP)
2850                         msleep(1);
2851                 else
2852                         udelay(500);
2853                 count++;
2854         } while (--cntdn);
2855
2856  out:
2857         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2858             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2859         return -EFAULT;
2860 }
2861
2862 /**
2863  * _base_wait_for_doorbell_not_used - waiting for doorbell to not be in use
2864  * @ioc: per adapter object
2865  * @timeout: timeout in second
2866  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2867  *
2868  * Returns 0 for success, non-zero for failure.
2869  *
2870  */
2871 static int
2872 _base_wait_for_doorbell_not_used(struct MPT2SAS_ADAPTER *ioc, int timeout,
2873     int sleep_flag)
2874 {
2875         u32 cntdn, count;
2876         u32 doorbell_reg;
2877
2878         count = 0;
2879         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2880         do {
2881                 doorbell_reg = readl(&ioc->chip->Doorbell);
2882                 if (!(doorbell_reg & MPI2_DOORBELL_USED)) {
2883                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2884                             "successful count(%d), timeout(%d)\n", ioc->name,
2885                             __func__, count, timeout));
2886                         return 0;
2887                 }
2888                 if (sleep_flag == CAN_SLEEP)
2889                         msleep(1);
2890                 else
2891                         udelay(500);
2892                 count++;
2893         } while (--cntdn);
2894
2895         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2896             "doorbell_reg(%x)!\n", ioc->name, __func__, count, doorbell_reg);
2897         return -EFAULT;
2898 }
2899
2900 /**
2901  * _base_send_ioc_reset - send doorbell reset
2902  * @ioc: per adapter object
2903  * @reset_type: currently only supports: MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET
2904  * @timeout: timeout in second
2905  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2906  *
2907  * Returns 0 for success, non-zero for failure.
2908  */
2909 static int
2910 _base_send_ioc_reset(struct MPT2SAS_ADAPTER *ioc, u8 reset_type, int timeout,
2911     int sleep_flag)
2912 {
2913         u32 ioc_state;
2914         int r = 0;
2915
2916         if (reset_type != MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET) {
2917                 printk(MPT2SAS_ERR_FMT "%s: unknown reset_type\n",
2918                     ioc->name, __func__);
2919                 return -EFAULT;
2920         }
2921
2922         if (!(ioc->facts.IOCCapabilities &
2923            MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY))
2924                 return -EFAULT;
2925
2926         printk(MPT2SAS_INFO_FMT "sending message unit reset !!\n", ioc->name);
2927
2928         writel(reset_type << MPI2_DOORBELL_FUNCTION_SHIFT,
2929             &ioc->chip->Doorbell);
2930         if ((_base_wait_for_doorbell_ack(ioc, 15, sleep_flag))) {
2931                 r = -EFAULT;
2932                 goto out;
2933         }
2934         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY,
2935             timeout, sleep_flag);
2936         if (ioc_state) {
2937                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
2938                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
2939                 r = -EFAULT;
2940                 goto out;
2941         }
2942  out:
2943         printk(MPT2SAS_INFO_FMT "message unit reset: %s\n",
2944             ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
2945         return r;
2946 }
2947
2948 /**
2949  * _base_handshake_req_reply_wait - send request thru doorbell interface
2950  * @ioc: per adapter object
2951  * @request_bytes: request length
2952  * @request: pointer having request payload
2953  * @reply_bytes: reply length
2954  * @reply: pointer to reply payload
2955  * @timeout: timeout in second
2956  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2957  *
2958  * Returns 0 for success, non-zero for failure.
2959  */
2960 static int
2961 _base_handshake_req_reply_wait(struct MPT2SAS_ADAPTER *ioc, int request_bytes,
2962     u32 *request, int reply_bytes, u16 *reply, int timeout, int sleep_flag)
2963 {
2964         MPI2DefaultReply_t *default_reply = (MPI2DefaultReply_t *)reply;
2965         int i;
2966         u8 failed;
2967         u16 dummy;
2968         __le32 *mfp;
2969
2970         /* make sure doorbell is not in use */
2971         if ((readl(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) {
2972                 printk(MPT2SAS_ERR_FMT "doorbell is in use "
2973                     " (line=%d)\n", ioc->name, __LINE__);
2974                 return -EFAULT;
2975         }
2976
2977         /* clear pending doorbell interrupts from previous state changes */
2978         if (readl(&ioc->chip->HostInterruptStatus) &
2979             MPI2_HIS_IOC2SYS_DB_STATUS)
2980                 writel(0, &ioc->chip->HostInterruptStatus);
2981
2982         /* send message to ioc */
2983         writel(((MPI2_FUNCTION_HANDSHAKE<<MPI2_DOORBELL_FUNCTION_SHIFT) |
2984             ((request_bytes/4)<<MPI2_DOORBELL_ADD_DWORDS_SHIFT)),
2985             &ioc->chip->Doorbell);
2986
2987         if ((_base_wait_for_doorbell_int(ioc, 5, NO_SLEEP))) {
2988                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
2989                    "int failed (line=%d)\n", ioc->name, __LINE__);
2990                 return -EFAULT;
2991         }
2992         writel(0, &ioc->chip->HostInterruptStatus);
2993
2994         if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag))) {
2995                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
2996                     "ack failed (line=%d)\n", ioc->name, __LINE__);
2997                 return -EFAULT;
2998         }
2999
3000         /* send message 32-bits at a time */
3001         for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) {
3002                 writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell);
3003                 if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag)))
3004                         failed = 1;
3005         }
3006
3007         if (failed) {
3008                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3009                     "sending request failed (line=%d)\n", ioc->name, __LINE__);
3010                 return -EFAULT;
3011         }
3012
3013         /* now wait for the reply */
3014         if ((_base_wait_for_doorbell_int(ioc, timeout, sleep_flag))) {
3015                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3016                    "int failed (line=%d)\n", ioc->name, __LINE__);
3017                 return -EFAULT;
3018         }
3019
3020         /* read the first two 16-bits, it gives the total length of the reply */
3021         reply[0] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3022             & MPI2_DOORBELL_DATA_MASK);
3023         writel(0, &ioc->chip->HostInterruptStatus);
3024         if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3025                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3026                    "int failed (line=%d)\n", ioc->name, __LINE__);
3027                 return -EFAULT;
3028         }
3029         reply[1] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3030             & MPI2_DOORBELL_DATA_MASK);
3031         writel(0, &ioc->chip->HostInterruptStatus);
3032
3033         for (i = 2; i < default_reply->MsgLength * 2; i++)  {
3034                 if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3035                         printk(MPT2SAS_ERR_FMT "doorbell "
3036                             "handshake int failed (line=%d)\n", ioc->name,
3037                             __LINE__);
3038                         return -EFAULT;
3039                 }
3040                 if (i >=  reply_bytes/2) /* overflow case */
3041                         dummy = readl(&ioc->chip->Doorbell);
3042                 else
3043                         reply[i] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3044                             & MPI2_DOORBELL_DATA_MASK);
3045                 writel(0, &ioc->chip->HostInterruptStatus);
3046         }
3047
3048         _base_wait_for_doorbell_int(ioc, 5, sleep_flag);
3049         if (_base_wait_for_doorbell_not_used(ioc, 5, sleep_flag) != 0) {
3050                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "doorbell is in use "
3051                     " (line=%d)\n", ioc->name, __LINE__));
3052         }
3053         writel(0, &ioc->chip->HostInterruptStatus);
3054
3055         if (ioc->logging_level & MPT_DEBUG_INIT) {
3056                 mfp = (__le32 *)reply;
3057                 printk(KERN_INFO "\toffset:data\n");
3058                 for (i = 0; i < reply_bytes/4; i++)
3059                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3060                             le32_to_cpu(mfp[i]));
3061         }
3062         return 0;
3063 }
3064
3065 /**
3066  * mpt2sas_base_sas_iounit_control - send sas iounit control to FW
3067  * @ioc: per adapter object
3068  * @mpi_reply: the reply payload from FW
3069  * @mpi_request: the request payload sent to FW
3070  *
3071  * The SAS IO Unit Control Request message allows the host to perform low-level
3072  * operations, such as resets on the PHYs of the IO Unit, also allows the host
3073  * to obtain the IOC assigned device handles for a device if it has other
3074  * identifying information about the device, in addition allows the host to
3075  * remove IOC resources associated with the device.
3076  *
3077  * Returns 0 for success, non-zero for failure.
3078  */
3079 int
3080 mpt2sas_base_sas_iounit_control(struct MPT2SAS_ADAPTER *ioc,
3081     Mpi2SasIoUnitControlReply_t *mpi_reply,
3082     Mpi2SasIoUnitControlRequest_t *mpi_request)
3083 {
3084         u16 smid;
3085         u32 ioc_state;
3086         unsigned long timeleft;
3087         u8 issue_reset;
3088         int rc;
3089         void *request;
3090         u16 wait_state_count;
3091
3092         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3093             __func__));
3094
3095         mutex_lock(&ioc->base_cmds.mutex);
3096
3097         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3098                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3099                     ioc->name, __func__);
3100                 rc = -EAGAIN;
3101                 goto out;
3102         }
3103
3104         wait_state_count = 0;
3105         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3106         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3107                 if (wait_state_count++ == 10) {
3108                         printk(MPT2SAS_ERR_FMT
3109                             "%s: failed due to ioc not operational\n",
3110                             ioc->name, __func__);
3111                         rc = -EFAULT;
3112                         goto out;
3113                 }
3114                 ssleep(1);
3115                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3116                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3117                     "operational state(count=%d)\n", ioc->name,
3118                     __func__, wait_state_count);
3119         }
3120
3121         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3122         if (!smid) {
3123                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3124                     ioc->name, __func__);
3125                 rc = -EAGAIN;
3126                 goto out;
3127         }
3128
3129         rc = 0;
3130         ioc->base_cmds.status = MPT2_CMD_PENDING;
3131         request = mpt2sas_base_get_msg_frame(ioc, smid);
3132         ioc->base_cmds.smid = smid;
3133         memcpy(request, mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t));
3134         if (mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3135             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET)
3136                 ioc->ioc_link_reset_in_progress = 1;
3137         mpt2sas_base_put_smid_default(ioc, smid);
3138         init_completion(&ioc->base_cmds.done);
3139         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3140             msecs_to_jiffies(10000));
3141         if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3142             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) &&
3143             ioc->ioc_link_reset_in_progress)
3144                 ioc->ioc_link_reset_in_progress = 0;
3145         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3146                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3147                     ioc->name, __func__);
3148                 _debug_dump_mf(mpi_request,
3149                     sizeof(Mpi2SasIoUnitControlRequest_t)/4);
3150                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3151                         issue_reset = 1;
3152                 goto issue_host_reset;
3153         }
3154         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3155                 memcpy(mpi_reply, ioc->base_cmds.reply,
3156                     sizeof(Mpi2SasIoUnitControlReply_t));
3157         else
3158                 memset(mpi_reply, 0, sizeof(Mpi2SasIoUnitControlReply_t));
3159         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3160         goto out;
3161
3162  issue_host_reset:
3163         if (issue_reset)
3164                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3165                     FORCE_BIG_HAMMER);
3166         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3167         rc = -EFAULT;
3168  out:
3169         mutex_unlock(&ioc->base_cmds.mutex);
3170         return rc;
3171 }
3172
3173
3174 /**
3175  * mpt2sas_base_scsi_enclosure_processor - sending request to sep device
3176  * @ioc: per adapter object
3177  * @mpi_reply: the reply payload from FW
3178  * @mpi_request: the request payload sent to FW
3179  *
3180  * The SCSI Enclosure Processor request message causes the IOC to
3181  * communicate with SES devices to control LED status signals.
3182  *
3183  * Returns 0 for success, non-zero for failure.
3184  */
3185 int
3186 mpt2sas_base_scsi_enclosure_processor(struct MPT2SAS_ADAPTER *ioc,
3187     Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request)
3188 {
3189         u16 smid;
3190         u32 ioc_state;
3191         unsigned long timeleft;
3192         u8 issue_reset;
3193         int rc;
3194         void *request;
3195         u16 wait_state_count;
3196
3197         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3198             __func__));
3199
3200         mutex_lock(&ioc->base_cmds.mutex);
3201
3202         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3203                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3204                     ioc->name, __func__);
3205                 rc = -EAGAIN;
3206                 goto out;
3207         }
3208
3209         wait_state_count = 0;
3210         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3211         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3212                 if (wait_state_count++ == 10) {
3213                         printk(MPT2SAS_ERR_FMT
3214                             "%s: failed due to ioc not operational\n",
3215                             ioc->name, __func__);
3216                         rc = -EFAULT;
3217                         goto out;
3218                 }
3219                 ssleep(1);
3220                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3221                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3222                     "operational state(count=%d)\n", ioc->name,
3223                     __func__, wait_state_count);
3224         }
3225
3226         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3227         if (!smid) {
3228                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3229                     ioc->name, __func__);
3230                 rc = -EAGAIN;
3231                 goto out;
3232         }
3233
3234         rc = 0;
3235         ioc->base_cmds.status = MPT2_CMD_PENDING;
3236         request = mpt2sas_base_get_msg_frame(ioc, smid);
3237         ioc->base_cmds.smid = smid;
3238         memcpy(request, mpi_request, sizeof(Mpi2SepReply_t));
3239         mpt2sas_base_put_smid_default(ioc, smid);
3240         init_completion(&ioc->base_cmds.done);
3241         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3242             msecs_to_jiffies(10000));
3243         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3244                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3245                     ioc->name, __func__);
3246                 _debug_dump_mf(mpi_request,
3247                     sizeof(Mpi2SepRequest_t)/4);
3248                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3249                         issue_reset = 1;
3250                 goto issue_host_reset;
3251         }
3252         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3253                 memcpy(mpi_reply, ioc->base_cmds.reply,
3254                     sizeof(Mpi2SepReply_t));
3255         else
3256                 memset(mpi_reply, 0, sizeof(Mpi2SepReply_t));
3257         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3258         goto out;
3259
3260  issue_host_reset:
3261         if (issue_reset)
3262                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3263                     FORCE_BIG_HAMMER);
3264         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3265         rc = -EFAULT;
3266  out:
3267         mutex_unlock(&ioc->base_cmds.mutex);
3268         return rc;
3269 }
3270
3271 /**
3272  * _base_get_port_facts - obtain port facts reply and save in ioc
3273  * @ioc: per adapter object
3274  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3275  *
3276  * Returns 0 for success, non-zero for failure.
3277  */
3278 static int
3279 _base_get_port_facts(struct MPT2SAS_ADAPTER *ioc, int port, int sleep_flag)
3280 {
3281         Mpi2PortFactsRequest_t mpi_request;
3282         Mpi2PortFactsReply_t mpi_reply;
3283         struct mpt2sas_port_facts *pfacts;
3284         int mpi_reply_sz, mpi_request_sz, r;
3285
3286         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3287             __func__));
3288
3289         mpi_reply_sz = sizeof(Mpi2PortFactsReply_t);
3290         mpi_request_sz = sizeof(Mpi2PortFactsRequest_t);
3291         memset(&mpi_request, 0, mpi_request_sz);
3292         mpi_request.Function = MPI2_FUNCTION_PORT_FACTS;
3293         mpi_request.PortNumber = port;
3294         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3295             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3296
3297         if (r != 0) {
3298                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3299                     ioc->name, __func__, r);
3300                 return r;
3301         }
3302
3303         pfacts = &ioc->pfacts[port];
3304         memset(pfacts, 0, sizeof(Mpi2PortFactsReply_t));
3305         pfacts->PortNumber = mpi_reply.PortNumber;
3306         pfacts->VP_ID = mpi_reply.VP_ID;
3307         pfacts->VF_ID = mpi_reply.VF_ID;
3308         pfacts->MaxPostedCmdBuffers =
3309             le16_to_cpu(mpi_reply.MaxPostedCmdBuffers);
3310
3311         return 0;
3312 }
3313
3314 /**
3315  * _base_get_ioc_facts - obtain ioc facts reply and save in ioc
3316  * @ioc: per adapter object
3317  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3318  *
3319  * Returns 0 for success, non-zero for failure.
3320  */
3321 static int
3322 _base_get_ioc_facts(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3323 {
3324         Mpi2IOCFactsRequest_t mpi_request;
3325         Mpi2IOCFactsReply_t mpi_reply;
3326         struct mpt2sas_facts *facts;
3327         int mpi_reply_sz, mpi_request_sz, r;
3328
3329         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3330             __func__));
3331
3332         mpi_reply_sz = sizeof(Mpi2IOCFactsReply_t);
3333         mpi_request_sz = sizeof(Mpi2IOCFactsRequest_t);
3334         memset(&mpi_request, 0, mpi_request_sz);
3335         mpi_request.Function = MPI2_FUNCTION_IOC_FACTS;
3336         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3337             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3338
3339         if (r != 0) {
3340                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3341                     ioc->name, __func__, r);
3342                 return r;
3343         }
3344
3345         facts = &ioc->facts;
3346         memset(facts, 0, sizeof(Mpi2IOCFactsReply_t));
3347         facts->MsgVersion = le16_to_cpu(mpi_reply.MsgVersion);
3348         facts->HeaderVersion = le16_to_cpu(mpi_reply.HeaderVersion);
3349         facts->VP_ID = mpi_reply.VP_ID;
3350         facts->VF_ID = mpi_reply.VF_ID;
3351         facts->IOCExceptions = le16_to_cpu(mpi_reply.IOCExceptions);
3352         facts->MaxChainDepth = mpi_reply.MaxChainDepth;
3353         facts->WhoInit = mpi_reply.WhoInit;
3354         facts->NumberOfPorts = mpi_reply.NumberOfPorts;
3355         facts->MaxMSIxVectors = mpi_reply.MaxMSIxVectors;
3356         facts->RequestCredit = le16_to_cpu(mpi_reply.RequestCredit);
3357         facts->MaxReplyDescriptorPostQueueDepth =
3358             le16_to_cpu(mpi_reply.MaxReplyDescriptorPostQueueDepth);
3359         facts->ProductID = le16_to_cpu(mpi_reply.ProductID);
3360         facts->IOCCapabilities = le32_to_cpu(mpi_reply.IOCCapabilities);
3361         if ((facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID))
3362                 ioc->ir_firmware = 1;
3363         facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word);
3364         facts->IOCRequestFrameSize =
3365             le16_to_cpu(mpi_reply.IOCRequestFrameSize);
3366         facts->MaxInitiators = le16_to_cpu(mpi_reply.MaxInitiators);
3367         facts->MaxTargets = le16_to_cpu(mpi_reply.MaxTargets);
3368         ioc->shost->max_id = -1;
3369         facts->MaxSasExpanders = le16_to_cpu(mpi_reply.MaxSasExpanders);
3370         facts->MaxEnclosures = le16_to_cpu(mpi_reply.MaxEnclosures);
3371         facts->ProtocolFlags = le16_to_cpu(mpi_reply.ProtocolFlags);
3372         facts->HighPriorityCredit =
3373             le16_to_cpu(mpi_reply.HighPriorityCredit);
3374         facts->ReplyFrameSize = mpi_reply.ReplyFrameSize;
3375         facts->MaxDevHandle = le16_to_cpu(mpi_reply.MaxDevHandle);
3376
3377         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hba queue depth(%d), "
3378             "max chains per io(%d)\n", ioc->name, facts->RequestCredit,
3379             facts->MaxChainDepth));
3380         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request frame size(%d), "
3381             "reply frame size(%d)\n", ioc->name,
3382             facts->IOCRequestFrameSize * 4, facts->ReplyFrameSize * 4));
3383         return 0;
3384 }
3385
3386 /**
3387  * _base_send_ioc_init - send ioc_init to firmware
3388  * @ioc: per adapter object
3389  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3390  *
3391  * Returns 0 for success, non-zero for failure.
3392  */
3393 static int
3394 _base_send_ioc_init(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3395 {
3396         Mpi2IOCInitRequest_t mpi_request;
3397         Mpi2IOCInitReply_t mpi_reply;
3398         int r;
3399         struct timeval current_time;
3400         u16 ioc_status;
3401
3402         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3403             __func__));
3404
3405         memset(&mpi_request, 0, sizeof(Mpi2IOCInitRequest_t));
3406         mpi_request.Function = MPI2_FUNCTION_IOC_INIT;
3407         mpi_request.WhoInit = MPI2_WHOINIT_HOST_DRIVER;
3408         mpi_request.VF_ID = 0; /* TODO */
3409         mpi_request.VP_ID = 0;
3410         mpi_request.MsgVersion = cpu_to_le16(MPI2_VERSION);
3411         mpi_request.HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
3412
3413         if (_base_is_controller_msix_enabled(ioc))
3414                 mpi_request.HostMSIxVectors = ioc->reply_queue_count;
3415         mpi_request.SystemRequestFrameSize = cpu_to_le16(ioc->request_sz/4);
3416         mpi_request.ReplyDescriptorPostQueueDepth =
3417             cpu_to_le16(ioc->reply_post_queue_depth);
3418         mpi_request.ReplyFreeQueueDepth =
3419             cpu_to_le16(ioc->reply_free_queue_depth);
3420
3421         mpi_request.SenseBufferAddressHigh =
3422             cpu_to_le32((u64)ioc->sense_dma >> 32);
3423         mpi_request.SystemReplyAddressHigh =
3424             cpu_to_le32((u64)ioc->reply_dma >> 32);
3425         mpi_request.SystemRequestFrameBaseAddress =
3426             cpu_to_le64((u64)ioc->request_dma);
3427         mpi_request.ReplyFreeQueueAddress =
3428             cpu_to_le64((u64)ioc->reply_free_dma);
3429         mpi_request.ReplyDescriptorPostQueueAddress =
3430             cpu_to_le64((u64)ioc->reply_post_free_dma);
3431
3432
3433         /* This time stamp specifies number of milliseconds
3434          * since epoch ~ midnight January 1, 1970.
3435          */
3436         do_gettimeofday(&current_time);
3437         mpi_request.TimeStamp = cpu_to_le64((u64)current_time.tv_sec * 1000 +
3438             (current_time.tv_usec / 1000));
3439
3440         if (ioc->logging_level & MPT_DEBUG_INIT) {
3441                 __le32 *mfp;
3442                 int i;
3443
3444                 mfp = (__le32 *)&mpi_request;
3445                 printk(KERN_INFO "\toffset:data\n");
3446                 for (i = 0; i < sizeof(Mpi2IOCInitRequest_t)/4; i++)
3447                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3448                             le32_to_cpu(mfp[i]));
3449         }
3450
3451         r = _base_handshake_req_reply_wait(ioc,
3452             sizeof(Mpi2IOCInitRequest_t), (u32 *)&mpi_request,
3453             sizeof(Mpi2IOCInitReply_t), (u16 *)&mpi_reply, 10,
3454             sleep_flag);
3455
3456         if (r != 0) {
3457                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3458                     ioc->name, __func__, r);
3459                 return r;
3460         }
3461
3462         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
3463         if (ioc_status != MPI2_IOCSTATUS_SUCCESS ||
3464             mpi_reply.IOCLogInfo) {
3465                 printk(MPT2SAS_ERR_FMT "%s: failed\n", ioc->name, __func__);
3466                 r = -EIO;
3467         }
3468
3469         return 0;
3470 }
3471
3472 /**
3473  * _base_send_port_enable - send port_enable(discovery stuff) to firmware
3474  * @ioc: per adapter object
3475  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3476  *
3477  * Returns 0 for success, non-zero for failure.
3478  */
3479 static int
3480 _base_send_port_enable(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3481 {
3482         Mpi2PortEnableRequest_t *mpi_request;
3483         u32 ioc_state;
3484         unsigned long timeleft;
3485         int r = 0;
3486         u16 smid;
3487
3488         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3489
3490         if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
3491                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3492                     ioc->name, __func__);
3493                 return -EAGAIN;
3494         }
3495
3496         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3497         if (!smid) {
3498                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3499                     ioc->name, __func__);
3500                 return -EAGAIN;
3501         }
3502
3503         ioc->base_cmds.status = MPT2_CMD_PENDING;
3504         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3505         ioc->base_cmds.smid = smid;
3506         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3507         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3508         mpi_request->VF_ID = 0; /* TODO */
3509         mpi_request->VP_ID = 0;
3510
3511         mpt2sas_base_put_smid_default(ioc, smid);
3512         init_completion(&ioc->base_cmds.done);
3513         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3514             300*HZ);
3515         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3516                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3517                     ioc->name, __func__);
3518                 _debug_dump_mf(mpi_request,
3519                     sizeof(Mpi2PortEnableRequest_t)/4);
3520                 if (ioc->base_cmds.status & MPT2_CMD_RESET)
3521                         r = -EFAULT;
3522                 else
3523                         r = -ETIME;
3524                 goto out;
3525         } else
3526                 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: complete\n",
3527                     ioc->name, __func__));
3528
3529         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_OPERATIONAL,
3530             60, sleep_flag);
3531         if (ioc_state) {
3532                 printk(MPT2SAS_ERR_FMT "%s: failed going to operational state "
3533                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
3534                 r = -EFAULT;
3535         }
3536  out:
3537         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3538         printk(MPT2SAS_INFO_FMT "port enable: %s\n",
3539             ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
3540         return r;
3541 }
3542
3543 /**
3544  * _base_unmask_events - turn on notification for this event
3545  * @ioc: per adapter object
3546  * @event: firmware event
3547  *
3548  * The mask is stored in ioc->event_masks.
3549  */
3550 static void
3551 _base_unmask_events(struct MPT2SAS_ADAPTER *ioc, u16 event)
3552 {
3553         u32 desired_event;
3554
3555         if (event >= 128)
3556                 return;
3557
3558         desired_event = (1 << (event % 32));
3559
3560         if (event < 32)
3561                 ioc->event_masks[0] &= ~desired_event;
3562         else if (event < 64)
3563                 ioc->event_masks[1] &= ~desired_event;
3564         else if (event < 96)
3565                 ioc->event_masks[2] &= ~desired_event;
3566         else if (event < 128)
3567                 ioc->event_masks[3] &= ~desired_event;
3568 }
3569
3570 /**
3571  * _base_event_notification - send event notification
3572  * @ioc: per adapter object
3573  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3574  *
3575  * Returns 0 for success, non-zero for failure.
3576  */
3577 static int
3578 _base_event_notification(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3579 {
3580         Mpi2EventNotificationRequest_t *mpi_request;
3581         unsigned long timeleft;
3582         u16 smid;
3583         int r = 0;
3584         int i;
3585
3586         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3587             __func__));
3588
3589         if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
3590                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3591                     ioc->name, __func__);
3592                 return -EAGAIN;
3593         }
3594
3595         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3596         if (!smid) {
3597                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3598                     ioc->name, __func__);
3599                 return -EAGAIN;
3600         }
3601         ioc->base_cmds.status = MPT2_CMD_PENDING;
3602         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3603         ioc->base_cmds.smid = smid;
3604         memset(mpi_request, 0, sizeof(Mpi2EventNotificationRequest_t));
3605         mpi_request->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
3606         mpi_request->VF_ID = 0; /* TODO */
3607         mpi_request->VP_ID = 0;
3608         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
3609                 mpi_request->EventMasks[i] =
3610                     cpu_to_le32(ioc->event_masks[i]);
3611         mpt2sas_base_put_smid_default(ioc, smid);
3612         init_completion(&ioc->base_cmds.done);
3613         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ);
3614         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3615                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3616                     ioc->name, __func__);
3617                 _debug_dump_mf(mpi_request,
3618                     sizeof(Mpi2EventNotificationRequest_t)/4);
3619                 if (ioc->base_cmds.status & MPT2_CMD_RESET)
3620                         r = -EFAULT;
3621                 else
3622                         r = -ETIME;
3623         } else
3624                 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: complete\n",
3625                     ioc->name, __func__));
3626         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3627         return r;
3628 }
3629
3630 /**
3631  * mpt2sas_base_validate_event_type - validating event types
3632  * @ioc: per adapter object
3633  * @event: firmware event
3634  *
3635  * This will turn on firmware event notification when application
3636  * ask for that event. We don't mask events that are already enabled.
3637  */
3638 void
3639 mpt2sas_base_validate_event_type(struct MPT2SAS_ADAPTER *ioc, u32 *event_type)
3640 {
3641         int i, j;
3642         u32 event_mask, desired_event;
3643         u8 send_update_to_fw;
3644
3645         for (i = 0, send_update_to_fw = 0; i <
3646             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) {
3647                 event_mask = ~event_type[i];
3648                 desired_event = 1;
3649                 for (j = 0; j < 32; j++) {
3650                         if (!(event_mask & desired_event) &&
3651                             (ioc->event_masks[i] & desired_event)) {
3652                                 ioc->event_masks[i] &= ~desired_event;
3653                                 send_update_to_fw = 1;
3654                         }
3655                         desired_event = (desired_event << 1);
3656                 }
3657         }
3658
3659         if (!send_update_to_fw)
3660                 return;
3661
3662         mutex_lock(&ioc->base_cmds.mutex);
3663         _base_event_notification(ioc, CAN_SLEEP);
3664         mutex_unlock(&ioc->base_cmds.mutex);
3665 }
3666
3667 /**
3668  * _base_diag_reset - the "big hammer" start of day reset
3669  * @ioc: per adapter object
3670  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3671  *
3672  * Returns 0 for success, non-zero for failure.
3673  */
3674 static int
3675 _base_diag_reset(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3676 {
3677         u32 host_diagnostic;
3678         u32 ioc_state;
3679         u32 count;
3680         u32 hcb_size;
3681
3682         printk(MPT2SAS_INFO_FMT "sending diag reset !!\n", ioc->name);
3683         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "clear interrupts\n",
3684             ioc->name));
3685
3686         count = 0;
3687         do {
3688                 /* Write magic sequence to WriteSequence register
3689                  * Loop until in diagnostic mode
3690                  */
3691                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "write magic "
3692                     "sequence\n", ioc->name));
3693                 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3694                 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &ioc->chip->WriteSequence);
3695                 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &ioc->chip->WriteSequence);
3696                 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &ioc->chip->WriteSequence);
3697                 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &ioc->chip->WriteSequence);
3698                 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &ioc->chip->WriteSequence);
3699                 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &ioc->chip->WriteSequence);
3700
3701                 /* wait 100 msec */
3702                 if (sleep_flag == CAN_SLEEP)
3703                         msleep(100);
3704                 else
3705                         mdelay(100);
3706
3707                 if (count++ > 20)
3708                         goto out;
3709
3710                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3711                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "wrote magic "
3712                     "sequence: count(%d), host_diagnostic(0x%08x)\n",
3713                     ioc->name, count, host_diagnostic));
3714
3715         } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
3716
3717         hcb_size = readl(&ioc->chip->HCBSize);
3718
3719         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "diag reset: issued\n",
3720             ioc->name));
3721         writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
3722              &ioc->chip->HostDiagnostic);
3723
3724         /* don't access any registers for 50 milliseconds */
3725         msleep(50);
3726
3727         /* 300 second max wait */
3728         for (count = 0; count < 3000000 ; count++) {
3729
3730                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3731
3732                 if (host_diagnostic == 0xFFFFFFFF)
3733                         goto out;
3734                 if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
3735                         break;
3736
3737                 /* wait 100 msec */
3738                 if (sleep_flag == CAN_SLEEP)
3739                         msleep(1);
3740                 else
3741                         mdelay(1);
3742         }
3743
3744         if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
3745
3746                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter "
3747                     "assuming the HCB Address points to good F/W\n",
3748                     ioc->name));
3749                 host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
3750                 host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
3751                 writel(host_diagnostic, &ioc->chip->HostDiagnostic);
3752
3753                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT
3754                     "re-enable the HCDW\n", ioc->name));
3755                 writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE,
3756                     &ioc->chip->HCBSize);
3757         }
3758
3759         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter\n",
3760             ioc->name));
3761         writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
3762             &ioc->chip->HostDiagnostic);
3763
3764         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "disable writes to the "
3765             "diagnostic register\n", ioc->name));
3766         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3767
3768         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "Wait for FW to go to the "
3769             "READY state\n", ioc->name));
3770         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20,
3771             sleep_flag);
3772         if (ioc_state) {
3773                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
3774                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
3775                 goto out;
3776         }
3777
3778         printk(MPT2SAS_INFO_FMT "diag reset: SUCCESS\n", ioc->name);
3779         return 0;
3780
3781  out:
3782         printk(MPT2SAS_ERR_FMT "diag reset: FAILED\n", ioc->name);
3783         return -EFAULT;
3784 }
3785
3786 /**
3787  * _base_make_ioc_ready - put controller in READY state
3788  * @ioc: per adapter object
3789  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3790  * @type: FORCE_BIG_HAMMER or SOFT_RESET
3791  *
3792  * Returns 0 for success, non-zero for failure.
3793  */
3794 static int
3795 _base_make_ioc_ready(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
3796     enum reset_type type)
3797 {
3798         u32 ioc_state;
3799         int rc;
3800
3801         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3802             __func__));
3803
3804         if (ioc->pci_error_recovery)
3805                 return 0;
3806
3807         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
3808         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: ioc_state(0x%08x)\n",
3809             ioc->name, __func__, ioc_state));
3810
3811         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY)
3812                 return 0;
3813
3814         if (ioc_state & MPI2_DOORBELL_USED) {
3815                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "unexpected doorbell "
3816                     "active!\n", ioc->name));
3817                 goto issue_diag_reset;
3818         }
3819
3820         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
3821                 mpt2sas_base_fault_info(ioc, ioc_state &
3822                     MPI2_DOORBELL_DATA_MASK);
3823                 goto issue_diag_reset;
3824         }
3825
3826         if (type == FORCE_BIG_HAMMER)
3827                 goto issue_diag_reset;
3828
3829         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)
3830                 if (!(_base_send_ioc_reset(ioc,
3831                     MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15, CAN_SLEEP))) {
3832                         ioc->ioc_reset_count++;
3833                         return 0;
3834         }
3835
3836  issue_diag_reset:
3837         rc = _base_diag_reset(ioc, CAN_SLEEP);
3838         ioc->ioc_reset_count++;
3839         return rc;
3840 }
3841
3842 /**
3843  * _base_make_ioc_operational - put controller in OPERATIONAL state
3844  * @ioc: per adapter object
3845  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3846  *
3847  * Returns 0 for success, non-zero for failure.
3848  */
3849 static int
3850 _base_make_ioc_operational(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3851 {
3852         int r, i;
3853         unsigned long   flags;
3854         u32 reply_address;
3855         u16 smid;
3856         struct _tr_list *delayed_tr, *delayed_tr_next;
3857         u8 hide_flag;
3858         struct adapter_reply_queue *reply_q;
3859         long reply_post_free;
3860         u32 reply_post_free_sz;
3861
3862         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3863             __func__));
3864
3865         /* clean the delayed target reset list */
3866         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
3867             &ioc->delayed_tr_list, list) {
3868                 list_del(&delayed_tr->list);
3869                 kfree(delayed_tr);
3870         }
3871
3872         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
3873             &ioc->delayed_tr_volume_list, list) {
3874                 list_del(&delayed_tr->list);
3875                 kfree(delayed_tr);
3876         }
3877
3878         /* initialize the scsi lookup free list */
3879         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3880         INIT_LIST_HEAD(&ioc->free_list);
3881         smid = 1;
3882         for (i = 0; i < ioc->scsiio_depth; i++, smid++) {
3883                 INIT_LIST_HEAD(&ioc->scsi_lookup[i].chain_list);
3884                 ioc->scsi_lookup[i].cb_idx = 0xFF;
3885                 ioc->scsi_lookup[i].smid = smid;
3886                 ioc->scsi_lookup[i].scmd = NULL;
3887                 ioc->scsi_lookup[i].direct_io = 0;
3888                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
3889                     &ioc->free_list);
3890         }
3891
3892         /* hi-priority queue */
3893         INIT_LIST_HEAD(&ioc->hpr_free_list);
3894         smid = ioc->hi_priority_smid;
3895         for (i = 0; i < ioc->hi_priority_depth; i++, smid++) {
3896                 ioc->hpr_lookup[i].cb_idx = 0xFF;
3897                 ioc->hpr_lookup[i].smid = smid;
3898                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
3899                     &ioc->hpr_free_list);
3900         }
3901
3902         /* internal queue */
3903         INIT_LIST_HEAD(&ioc->internal_free_list);
3904         smid = ioc->internal_smid;
3905         for (i = 0; i < ioc->internal_depth; i++, smid++) {
3906                 ioc->internal_lookup[i].cb_idx = 0xFF;
3907                 ioc->internal_lookup[i].smid = smid;
3908                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
3909                     &ioc->internal_free_list);
3910         }
3911
3912         /* chain pool */
3913         INIT_LIST_HEAD(&ioc->free_chain_list);
3914         for (i = 0; i < ioc->chain_depth; i++)
3915                 list_add_tail(&ioc->chain_lookup[i].tracker_list,
3916                     &ioc->free_chain_list);
3917
3918         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3919
3920         /* initialize Reply Free Queue */
3921         for (i = 0, reply_address = (u32)ioc->reply_dma ;
3922             i < ioc->reply_free_queue_depth ; i++, reply_address +=
3923             ioc->reply_sz)
3924                 ioc->reply_free[i] = cpu_to_le32(reply_address);
3925
3926         /* initialize reply queues */
3927         _base_assign_reply_queues(ioc);
3928
3929         /* initialize Reply Post Free Queue */
3930         reply_post_free = (long)ioc->reply_post_free;
3931         reply_post_free_sz = ioc->reply_post_queue_depth *
3932             sizeof(Mpi2DefaultReplyDescriptor_t);
3933         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
3934                 reply_q->reply_post_host_index = 0;
3935                 reply_q->reply_post_free = (Mpi2ReplyDescriptorsUnion_t *)
3936                     reply_post_free;
3937                 for (i = 0; i < ioc->reply_post_queue_depth; i++)
3938                         reply_q->reply_post_free[i].Words =
3939                                                         cpu_to_le64(ULLONG_MAX);
3940                 if (!_base_is_controller_msix_enabled(ioc))
3941                         goto skip_init_reply_post_free_queue;
3942                 reply_post_free += reply_post_free_sz;
3943         }
3944  skip_init_reply_post_free_queue:
3945
3946         r = _base_send_ioc_init(ioc, sleep_flag);
3947         if (r)
3948                 return r;
3949
3950         /* initialize reply free host index */
3951         ioc->reply_free_host_index = ioc->reply_free_queue_depth - 1;
3952         writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex);
3953
3954         /* initialize reply post host index */
3955         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
3956                 writel(reply_q->msix_index << MPI2_RPHI_MSIX_INDEX_SHIFT,
3957                     &ioc->chip->ReplyPostHostIndex);
3958                 if (!_base_is_controller_msix_enabled(ioc))
3959                         goto skip_init_reply_post_host_index;
3960         }
3961
3962  skip_init_reply_post_host_index:
3963
3964         _base_unmask_interrupts(ioc);
3965         r = _base_event_notification(ioc, sleep_flag);
3966         if (r)
3967                 return r;
3968
3969         if (sleep_flag == CAN_SLEEP)
3970                 _base_static_config_pages(ioc);
3971
3972         if (ioc->wait_for_port_enable_to_complete && ioc->is_warpdrive) {
3973                 if (ioc->manu_pg10.OEMIdentifier  == 0x80) {
3974                         hide_flag = (u8) (ioc->manu_pg10.OEMSpecificFlags0 &
3975                             MFG_PAGE10_HIDE_SSDS_MASK);
3976                         if (hide_flag != MFG_PAGE10_HIDE_SSDS_MASK)
3977                                 ioc->mfg_pg10_hide_flag = hide_flag;
3978                 }
3979         }
3980
3981         if (ioc->wait_for_port_enable_to_complete) {
3982                 if (diag_buffer_enable != 0)
3983                         mpt2sas_enable_diag_buffer(ioc, diag_buffer_enable);
3984                 if (disable_discovery > 0)
3985                         return r;
3986         }
3987
3988         r = _base_send_port_enable(ioc, sleep_flag);
3989         if (r)
3990                 return r;
3991
3992         return r;
3993 }
3994
3995 /**
3996  * mpt2sas_base_free_resources - free resources controller resources (io/irq/memap)
3997  * @ioc: per adapter object
3998  *
3999  * Return nothing.
4000  */
4001 void
4002 mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc)
4003 {
4004         struct pci_dev *pdev = ioc->pdev;
4005
4006         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4007             __func__));
4008
4009         _base_mask_interrupts(ioc);
4010         ioc->shost_recovery = 1;
4011         _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4012         ioc->shost_recovery = 0;
4013         _base_free_irq(ioc);
4014         _base_disable_msix(ioc);
4015         if (ioc->chip_phys)
4016                 iounmap(ioc->chip);
4017         ioc->chip_phys = 0;
4018         pci_release_selected_regions(ioc->pdev, ioc->bars);
4019         pci_disable_pcie_error_reporting(pdev);
4020         pci_disable_device(pdev);
4021         return;
4022 }
4023
4024 /**
4025  * mpt2sas_base_attach - attach controller instance
4026  * @ioc: per adapter object
4027  *
4028  * Returns 0 for success, non-zero for failure.
4029  */
4030 int
4031 mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
4032 {
4033         int r, i;
4034         int cpu_id, last_cpu_id = 0;
4035
4036         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4037             __func__));
4038
4039         /* setup cpu_msix_table */
4040         ioc->cpu_count = num_online_cpus();
4041         for_each_online_cpu(cpu_id)
4042                 last_cpu_id = cpu_id;
4043         ioc->cpu_msix_table_sz = last_cpu_id + 1;
4044         ioc->cpu_msix_table = kzalloc(ioc->cpu_msix_table_sz, GFP_KERNEL);
4045         ioc->reply_queue_count = 1;
4046         if (!ioc->cpu_msix_table) {
4047                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation for "
4048                     "cpu_msix_table failed!!!\n", ioc->name));
4049                 r = -ENOMEM;
4050                 goto out_free_resources;
4051         }
4052
4053         if (ioc->is_warpdrive) {
4054                 ioc->reply_post_host_index = kcalloc(ioc->cpu_msix_table_sz,
4055                     sizeof(resource_size_t *), GFP_KERNEL);
4056                 if (!ioc->reply_post_host_index) {
4057                         dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation "
4058                                 "for cpu_msix_table failed!!!\n", ioc->name));
4059                         r = -ENOMEM;
4060                         goto out_free_resources;
4061                 }
4062         }
4063
4064         r = mpt2sas_base_map_resources(ioc);
4065         if (r)
4066                 return r;
4067
4068         if (ioc->is_warpdrive) {
4069                 ioc->reply_post_host_index[0] =
4070                     (resource_size_t *)&ioc->chip->ReplyPostHostIndex;
4071
4072                 for (i = 1; i < ioc->cpu_msix_table_sz; i++)
4073                         ioc->reply_post_host_index[i] = (resource_size_t *)
4074                         ((u8 *)&ioc->chip->Doorbell + (0x4000 + ((i - 1)
4075                         * 4)));
4076         }
4077
4078         pci_set_drvdata(ioc->pdev, ioc->shost);
4079         r = _base_get_ioc_facts(ioc, CAN_SLEEP);
4080         if (r)
4081                 goto out_free_resources;
4082
4083         r = _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4084         if (r)
4085                 goto out_free_resources;
4086
4087         ioc->pfacts = kcalloc(ioc->facts.NumberOfPorts,
4088             sizeof(Mpi2PortFactsReply_t), GFP_KERNEL);
4089         if (!ioc->pfacts) {
4090                 r = -ENOMEM;
4091                 goto out_free_resources;
4092         }
4093
4094         for (i = 0 ; i < ioc->facts.NumberOfPorts; i++) {
4095                 r = _base_get_port_facts(ioc, i, CAN_SLEEP);
4096                 if (r)
4097                         goto out_free_resources;
4098         }
4099
4100         r = _base_allocate_memory_pools(ioc, CAN_SLEEP);
4101         if (r)
4102                 goto out_free_resources;
4103
4104         init_waitqueue_head(&ioc->reset_wq);
4105
4106         /* allocate memory pd handle bitmask list */
4107         ioc->pd_handles_sz = (ioc->facts.MaxDevHandle / 8);
4108         if (ioc->facts.MaxDevHandle % 8)
4109                 ioc->pd_handles_sz++;
4110         ioc->pd_handles = kzalloc(ioc->pd_handles_sz,
4111             GFP_KERNEL);
4112         if (!ioc->pd_handles) {
4113                 r = -ENOMEM;
4114                 goto out_free_resources;
4115         }
4116
4117         ioc->fwfault_debug = mpt2sas_fwfault_debug;
4118
4119         /* base internal command bits */
4120         mutex_init(&ioc->base_cmds.mutex);
4121         ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4122         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
4123
4124         /* transport internal command bits */
4125         ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4126         ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
4127         mutex_init(&ioc->transport_cmds.mutex);
4128
4129         /* scsih internal command bits */
4130         ioc->scsih_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4131         ioc->scsih_cmds.status = MPT2_CMD_NOT_USED;
4132         mutex_init(&ioc->scsih_cmds.mutex);
4133
4134         /* task management internal command bits */
4135         ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4136         ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
4137         mutex_init(&ioc->tm_cmds.mutex);
4138
4139         /* config page internal command bits */
4140         ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4141         ioc->config_cmds.status = MPT2_CMD_NOT_USED;
4142         mutex_init(&ioc->config_cmds.mutex);
4143
4144         /* ctl module internal command bits */
4145         ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4146         ioc->ctl_cmds.sense = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
4147         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
4148         mutex_init(&ioc->ctl_cmds.mutex);
4149
4150         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4151             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4152             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply ||
4153             !ioc->ctl_cmds.sense) {
4154                 r = -ENOMEM;
4155                 goto out_free_resources;
4156         }
4157
4158         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4159             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4160             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply) {
4161                 r = -ENOMEM;
4162                 goto out_free_resources;
4163         }
4164
4165         init_completion(&ioc->shost_recovery_done);
4166
4167         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
4168                 ioc->event_masks[i] = -1;
4169
4170         /* here we enable the events we care about */
4171         _base_unmask_events(ioc, MPI2_EVENT_SAS_DISCOVERY);
4172         _base_unmask_events(ioc, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE);
4173         _base_unmask_events(ioc, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST);
4174         _base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4175         _base_unmask_events(ioc, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE);
4176         _base_unmask_events(ioc, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST);
4177         _base_unmask_events(ioc, MPI2_EVENT_IR_VOLUME);
4178         _base_unmask_events(ioc, MPI2_EVENT_IR_PHYSICAL_DISK);
4179         _base_unmask_events(ioc, MPI2_EVENT_IR_OPERATION_STATUS);
4180         _base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED);
4181         r = _base_make_ioc_operational(ioc, CAN_SLEEP);
4182         if (r)
4183                 goto out_free_resources;
4184
4185         if (missing_delay[0] != -1 && missing_delay[1] != -1)
4186                 _base_update_missing_delay(ioc, missing_delay[0],
4187                     missing_delay[1]);
4188
4189         mpt2sas_base_start_watchdog(ioc);
4190         return 0;
4191
4192  out_free_resources:
4193
4194         ioc->remove_host = 1;
4195         mpt2sas_base_free_resources(ioc);
4196         _base_release_memory_pools(ioc);
4197         pci_set_drvdata(ioc->pdev, NULL);
4198         kfree(ioc->cpu_msix_table);
4199         if (ioc->is_warpdrive)
4200                 kfree(ioc->reply_post_host_index);
4201         kfree(ioc->pd_handles);
4202         kfree(ioc->tm_cmds.reply);
4203         kfree(ioc->transport_cmds.reply);
4204         kfree(ioc->scsih_cmds.reply);
4205         kfree(ioc->config_cmds.reply);
4206         kfree(ioc->base_cmds.reply);
4207         kfree(ioc->ctl_cmds.reply);
4208         kfree(ioc->ctl_cmds.sense);
4209         kfree(ioc->pfacts);
4210         ioc->ctl_cmds.reply = NULL;
4211         ioc->base_cmds.reply = NULL;
4212         ioc->tm_cmds.reply = NULL;
4213         ioc->scsih_cmds.reply = NULL;
4214         ioc->transport_cmds.reply = NULL;
4215         ioc->config_cmds.reply = NULL;
4216         ioc->pfacts = NULL;
4217         return r;
4218 }
4219
4220
4221 /**
4222  * mpt2sas_base_detach - remove controller instance
4223  * @ioc: per adapter object
4224  *
4225  * Return nothing.
4226  */
4227 void
4228 mpt2sas_base_detach(struct MPT2SAS_ADAPTER *ioc)
4229 {
4230
4231         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4232             __func__));
4233
4234         mpt2sas_base_stop_watchdog(ioc);
4235         mpt2sas_base_free_resources(ioc);
4236         _base_release_memory_pools(ioc);
4237         pci_set_drvdata(ioc->pdev, NULL);
4238         kfree(ioc->cpu_msix_table);
4239         if (ioc->is_warpdrive)
4240                 kfree(ioc->reply_post_host_index);
4241         kfree(ioc->pd_handles);
4242         kfree(ioc->pfacts);
4243         kfree(ioc->ctl_cmds.reply);
4244         kfree(ioc->ctl_cmds.sense);
4245         kfree(ioc->base_cmds.reply);
4246         kfree(ioc->tm_cmds.reply);
4247         kfree(ioc->transport_cmds.reply);
4248         kfree(ioc->scsih_cmds.reply);
4249         kfree(ioc->config_cmds.reply);
4250 }
4251
4252 /**
4253  * _base_reset_handler - reset callback handler (for base)
4254  * @ioc: per adapter object
4255  * @reset_phase: phase
4256  *
4257  * The handler for doing any required cleanup or initialization.
4258  *
4259  * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
4260  * MPT2_IOC_DONE_RESET
4261  *
4262  * Return nothing.
4263  */
4264 static void
4265 _base_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
4266 {
4267         mpt2sas_scsih_reset_handler(ioc, reset_phase);
4268         mpt2sas_ctl_reset_handler(ioc, reset_phase);
4269         switch (reset_phase) {
4270         case MPT2_IOC_PRE_RESET:
4271                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4272                     "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
4273                 break;
4274         case MPT2_IOC_AFTER_RESET:
4275                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4276                     "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
4277                 if (ioc->transport_cmds.status & MPT2_CMD_PENDING) {
4278                         ioc->transport_cmds.status |= MPT2_CMD_RESET;
4279                         mpt2sas_base_free_smid(ioc, ioc->transport_cmds.smid);
4280                         complete(&ioc->transport_cmds.done);
4281                 }
4282                 if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
4283                         ioc->base_cmds.status |= MPT2_CMD_RESET;
4284                         mpt2sas_base_free_smid(ioc, ioc->base_cmds.smid);
4285                         complete(&ioc->base_cmds.done);
4286                 }
4287                 if (ioc->config_cmds.status & MPT2_CMD_PENDING) {
4288                         ioc->config_cmds.status |= MPT2_CMD_RESET;
4289                         mpt2sas_base_free_smid(ioc, ioc->config_cmds.smid);
4290                         ioc->config_cmds.smid = USHRT_MAX;
4291                         complete(&ioc->config_cmds.done);
4292                 }
4293                 break;
4294         case MPT2_IOC_DONE_RESET:
4295                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4296                     "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
4297                 break;
4298         }
4299 }
4300
4301 /**
4302  * _wait_for_commands_to_complete - reset controller
4303  * @ioc: Pointer to MPT_ADAPTER structure
4304  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4305  *
4306  * This function waiting(3s) for all pending commands to complete
4307  * prior to putting controller in reset.
4308  */
4309 static void
4310 _wait_for_commands_to_complete(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4311 {
4312         u32 ioc_state;
4313         unsigned long flags;
4314         u16 i;
4315
4316         ioc->pending_io_count = 0;
4317         if (sleep_flag != CAN_SLEEP)
4318                 return;
4319
4320         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
4321         if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL)
4322                 return;
4323
4324         /* pending command count */
4325         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4326         for (i = 0; i < ioc->scsiio_depth; i++)
4327                 if (ioc->scsi_lookup[i].cb_idx != 0xFF)
4328                         ioc->pending_io_count++;
4329         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4330
4331         if (!ioc->pending_io_count)
4332                 return;
4333
4334         /* wait for pending commands to complete */
4335         wait_event_timeout(ioc->reset_wq, ioc->pending_io_count == 0, 10 * HZ);
4336 }
4337
4338 /**
4339  * mpt2sas_base_hard_reset_handler - reset controller
4340  * @ioc: Pointer to MPT_ADAPTER structure
4341  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4342  * @type: FORCE_BIG_HAMMER or SOFT_RESET
4343  *
4344  * Returns 0 for success, non-zero for failure.
4345  */
4346 int
4347 mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
4348     enum reset_type type)
4349 {
4350         int r;
4351         unsigned long flags;
4352         u8 pe_complete = ioc->wait_for_port_enable_to_complete;
4353
4354         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
4355             __func__));
4356
4357         if (ioc->pci_error_recovery) {
4358                 printk(MPT2SAS_ERR_FMT "%s: pci error recovery reset\n",
4359                     ioc->name, __func__);
4360                 r = 0;
4361                 goto out;
4362         }
4363
4364         if (mpt2sas_fwfault_debug)
4365                 mpt2sas_halt_firmware(ioc);
4366
4367         /* TODO - What we really should be doing is pulling
4368          * out all the code associated with NO_SLEEP; its never used.
4369          * That is legacy code from mpt fusion driver, ported over.
4370          * I will leave this BUG_ON here for now till its been resolved.
4371          */
4372         BUG_ON(sleep_flag == NO_SLEEP);
4373
4374         /* wait for an active reset in progress to complete */
4375         if (!mutex_trylock(&ioc->reset_in_progress_mutex)) {
4376                 do {
4377                         ssleep(1);
4378                 } while (ioc->shost_recovery == 1);
4379                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4380                     __func__));
4381                 return ioc->ioc_reset_in_progress_status;
4382         }
4383
4384         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4385         ioc->shost_recovery = 1;
4386         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4387
4388         _base_reset_handler(ioc, MPT2_IOC_PRE_RESET);
4389         _wait_for_commands_to_complete(ioc, sleep_flag);
4390         _base_mask_interrupts(ioc);
4391         r = _base_make_ioc_ready(ioc, sleep_flag, type);
4392         if (r)
4393                 goto out;
4394         _base_reset_handler(ioc, MPT2_IOC_AFTER_RESET);
4395
4396         /* If this hard reset is called while port enable is active, then
4397          * there is no reason to call make_ioc_operational
4398          */
4399         if (pe_complete) {
4400                 r = -EFAULT;
4401                 goto out;
4402         }
4403         r = _base_make_ioc_operational(ioc, sleep_flag);
4404         if (!r)
4405                 _base_reset_handler(ioc, MPT2_IOC_DONE_RESET);
4406  out:
4407         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: %s\n",
4408             ioc->name, __func__, ((r == 0) ? "SUCCESS" : "FAILED")));
4409
4410         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4411         ioc->ioc_reset_in_progress_status = r;
4412         ioc->shost_recovery = 0;
4413         complete(&ioc->shost_recovery_done);
4414         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4415         mutex_unlock(&ioc->reset_in_progress_mutex);
4416
4417         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4418             __func__));
4419         return r;
4420 }