projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
[SCSI] mpt2sas : the sanity check in base_interrupt needs to be on dword boundary
[deliverable/linux.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) 2007-2008 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/version.h>
46 #include <linux/kernel.h>
47 #include <linux/module.h>
48 #include <linux/errno.h>
49 #include <linux/init.h>
50 #include <linux/slab.h>
51 #include <linux/types.h>
52 #include <linux/pci.h>
53 #include <linux/kdev_t.h>
54 #include <linux/blkdev.h>
55 #include <linux/delay.h>
56 #include <linux/interrupt.h>
57 #include <linux/dma-mapping.h>
58 #include <linux/sort.h>
59 #include <linux/io.h>
60
61 #include "mpt2sas_base.h"
62
63 static MPT_CALLBACK mpt_callbacks[MPT_MAX_CALLBACKS];
64
65 #define FAULT_POLLING_INTERVAL 1000 /* in milliseconds */
66 #define MPT2SAS_MAX_REQUEST_QUEUE 500 /* maximum controller queue depth */
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 /**
81 * _base_fault_reset_work - workq handling ioc fault conditions
82 * @work: input argument, used to derive ioc
83 * Context: sleep.
84 *
85 * Return nothing.
86 */
87 static void
88 _base_fault_reset_work(struct work_struct *work)
89 {
90 struct MPT2SAS_ADAPTER *ioc =
91 container_of(work, struct MPT2SAS_ADAPTER, fault_reset_work.work);
92 unsigned long flags;
93 u32 doorbell;
94 int rc;
95
96 spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
97 if (ioc->ioc_reset_in_progress)
98 goto rearm_timer;
99 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
100
101 doorbell = mpt2sas_base_get_iocstate(ioc, 0);
102 if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
103 rc = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
104 FORCE_BIG_HAMMER);
105 printk(MPT2SAS_WARN_FMT "%s: hard reset: %s\n", ioc->name,
106 __func__, (rc == 0) ? "success" : "failed");
107 doorbell = mpt2sas_base_get_iocstate(ioc, 0);
108 if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
109 mpt2sas_base_fault_info(ioc, doorbell &
110 MPI2_DOORBELL_DATA_MASK);
111 }
112
113 spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
114 rearm_timer:
115 if (ioc->fault_reset_work_q)
116 queue_delayed_work(ioc->fault_reset_work_q,
117 &ioc->fault_reset_work,
118 msecs_to_jiffies(FAULT_POLLING_INTERVAL));
119 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
120 }
121
122 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
123 /**
124 * _base_sas_ioc_info - verbose translation of the ioc status
125 * @ioc: pointer to scsi command object
126 * @mpi_reply: reply mf payload returned from firmware
127 * @request_hdr: request mf
128 *
129 * Return nothing.
130 */
131 static void
132 _base_sas_ioc_info(struct MPT2SAS_ADAPTER *ioc, MPI2DefaultReply_t *mpi_reply,
133 MPI2RequestHeader_t *request_hdr)
134 {
135 u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
136 MPI2_IOCSTATUS_MASK;
137 char *desc = NULL;
138 u16 frame_sz;
139 char *func_str = NULL;
140
141 /* SCSI_IO, RAID_PASS are handled from _scsih_scsi_ioc_info */
142 if (request_hdr->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
143 request_hdr->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
144 request_hdr->Function == MPI2_FUNCTION_EVENT_NOTIFICATION)
145 return;
146
147 switch (ioc_status) {
148
149 /****************************************************************************
150 * Common IOCStatus values for all replies
151 ****************************************************************************/
152
153 case MPI2_IOCSTATUS_INVALID_FUNCTION:
154 desc = "invalid function";
155 break;
156 case MPI2_IOCSTATUS_BUSY:
157 desc = "busy";
158 break;
159 case MPI2_IOCSTATUS_INVALID_SGL:
160 desc = "invalid sgl";
161 break;
162 case MPI2_IOCSTATUS_INTERNAL_ERROR:
163 desc = "internal error";
164 break;
165 case MPI2_IOCSTATUS_INVALID_VPID:
166 desc = "invalid vpid";
167 break;
168 case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
169 desc = "insufficient resources";
170 break;
171 case MPI2_IOCSTATUS_INVALID_FIELD:
172 desc = "invalid field";
173 break;
174 case MPI2_IOCSTATUS_INVALID_STATE:
175 desc = "invalid state";
176 break;
177 case MPI2_IOCSTATUS_OP_STATE_NOT_SUPPORTED:
178 desc = "op state not supported";
179 break;
180
181 /****************************************************************************
182 * Config IOCStatus values
183 ****************************************************************************/
184
185 case MPI2_IOCSTATUS_CONFIG_INVALID_ACTION:
186 desc = "config invalid action";
187 break;
188 case MPI2_IOCSTATUS_CONFIG_INVALID_TYPE:
189 desc = "config invalid type";
190 break;
191 case MPI2_IOCSTATUS_CONFIG_INVALID_PAGE:
192 desc = "config invalid page";
193 break;
194 case MPI2_IOCSTATUS_CONFIG_INVALID_DATA:
195 desc = "config invalid data";
196 break;
197 case MPI2_IOCSTATUS_CONFIG_NO_DEFAULTS:
198 desc = "config no defaults";
199 break;
200 case MPI2_IOCSTATUS_CONFIG_CANT_COMMIT:
201 desc = "config cant commit";
202 break;
203
204 /****************************************************************************
205 * SCSI IO Reply
206 ****************************************************************************/
207
208 case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
209 case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
210 case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
211 case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
212 case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
213 case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
214 case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
215 case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
216 case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
217 case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
218 case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
219 case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
220 break;
221
222 /****************************************************************************
223 * For use by SCSI Initiator and SCSI Target end-to-end data protection
224 ****************************************************************************/
225
226 case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
227 desc = "eedp guard error";
228 break;
229 case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
230 desc = "eedp ref tag error";
231 break;
232 case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
233 desc = "eedp app tag error";
234 break;
235
236 /****************************************************************************
237 * SCSI Target values
238 ****************************************************************************/
239
240 case MPI2_IOCSTATUS_TARGET_INVALID_IO_INDEX:
241 desc = "target invalid io index";
242 break;
243 case MPI2_IOCSTATUS_TARGET_ABORTED:
244 desc = "target aborted";
245 break;
246 case MPI2_IOCSTATUS_TARGET_NO_CONN_RETRYABLE:
247 desc = "target no conn retryable";
248 break;
249 case MPI2_IOCSTATUS_TARGET_NO_CONNECTION:
250 desc = "target no connection";
251 break;
252 case MPI2_IOCSTATUS_TARGET_XFER_COUNT_MISMATCH:
253 desc = "target xfer count mismatch";
254 break;
255 case MPI2_IOCSTATUS_TARGET_DATA_OFFSET_ERROR:
256 desc = "target data offset error";
257 break;
258 case MPI2_IOCSTATUS_TARGET_TOO_MUCH_WRITE_DATA:
259 desc = "target too much write data";
260 break;
261 case MPI2_IOCSTATUS_TARGET_IU_TOO_SHORT:
262 desc = "target iu too short";
263 break;
264 case MPI2_IOCSTATUS_TARGET_ACK_NAK_TIMEOUT:
265 desc = "target ack nak timeout";
266 break;
267 case MPI2_IOCSTATUS_TARGET_NAK_RECEIVED:
268 desc = "target nak received";
269 break;
270
271 /****************************************************************************
272 * Serial Attached SCSI values
273 ****************************************************************************/
274
275 case MPI2_IOCSTATUS_SAS_SMP_REQUEST_FAILED:
276 desc = "smp request failed";
277 break;
278 case MPI2_IOCSTATUS_SAS_SMP_DATA_OVERRUN:
279 desc = "smp data overrun";
280 break;
281
282 /****************************************************************************
283 * Diagnostic Buffer Post / Diagnostic Release values
284 ****************************************************************************/
285
286 case MPI2_IOCSTATUS_DIAGNOSTIC_RELEASED:
287 desc = "diagnostic released";
288 break;
289 default:
290 break;
291 }
292
293 if (!desc)
294 return;
295
296 switch (request_hdr->Function) {
297 case MPI2_FUNCTION_CONFIG:
298 frame_sz = sizeof(Mpi2ConfigRequest_t) + ioc->sge_size;
299 func_str = "config_page";
300 break;
301 case MPI2_FUNCTION_SCSI_TASK_MGMT:
302 frame_sz = sizeof(Mpi2SCSITaskManagementRequest_t);
303 func_str = "task_mgmt";
304 break;
305 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
306 frame_sz = sizeof(Mpi2SasIoUnitControlRequest_t);
307 func_str = "sas_iounit_ctl";
308 break;
309 case MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR:
310 frame_sz = sizeof(Mpi2SepRequest_t);
311 func_str = "enclosure";
312 break;
313 case MPI2_FUNCTION_IOC_INIT:
314 frame_sz = sizeof(Mpi2IOCInitRequest_t);
315 func_str = "ioc_init";
316 break;
317 case MPI2_FUNCTION_PORT_ENABLE:
318 frame_sz = sizeof(Mpi2PortEnableRequest_t);
319 func_str = "port_enable";
320 break;
321 case MPI2_FUNCTION_SMP_PASSTHROUGH:
322 frame_sz = sizeof(Mpi2SmpPassthroughRequest_t) + ioc->sge_size;
323 func_str = "smp_passthru";
324 break;
325 default:
326 frame_sz = 32;
327 func_str = "unknown";
328 break;
329 }
330
331 printk(MPT2SAS_WARN_FMT "ioc_status: %s(0x%04x), request(0x%p),"
332 " (%s)\n", ioc->name, desc, ioc_status, request_hdr, func_str);
333
334 _debug_dump_mf(request_hdr, frame_sz/4);
335 }
336
337 /**
338 * _base_display_event_data - verbose translation of firmware asyn events
339 * @ioc: pointer to scsi command object
340 * @mpi_reply: reply mf payload returned from firmware
341 *
342 * Return nothing.
343 */
344 static void
345 _base_display_event_data(struct MPT2SAS_ADAPTER *ioc,
346 Mpi2EventNotificationReply_t *mpi_reply)
347 {
348 char *desc = NULL;
349 u16 event;
350
351 if (!(ioc->logging_level & MPT_DEBUG_EVENTS))
352 return;
353
354 event = le16_to_cpu(mpi_reply->Event);
355
356 switch (event) {
357 case MPI2_EVENT_LOG_DATA:
358 desc = "Log Data";
359 break;
360 case MPI2_EVENT_STATE_CHANGE:
361 desc = "Status Change";
362 break;
363 case MPI2_EVENT_HARD_RESET_RECEIVED:
364 desc = "Hard Reset Received";
365 break;
366 case MPI2_EVENT_EVENT_CHANGE:
367 desc = "Event Change";
368 break;
369 case MPI2_EVENT_TASK_SET_FULL:
370 desc = "Task Set Full";
371 break;
372 case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
373 desc = "Device Status Change";
374 break;
375 case MPI2_EVENT_IR_OPERATION_STATUS:
376 desc = "IR Operation Status";
377 break;
378 case MPI2_EVENT_SAS_DISCOVERY:
379 desc = "Discovery";
380 break;
381 case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
382 desc = "SAS Broadcast Primitive";
383 break;
384 case MPI2_EVENT_SAS_INIT_DEVICE_STATUS_CHANGE:
385 desc = "SAS Init Device Status Change";
386 break;
387 case MPI2_EVENT_SAS_INIT_TABLE_OVERFLOW:
388 desc = "SAS Init Table Overflow";
389 break;
390 case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
391 desc = "SAS Topology Change List";
392 break;
393 case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
394 desc = "SAS Enclosure Device Status Change";
395 break;
396 case MPI2_EVENT_IR_VOLUME:
397 desc = "IR Volume";
398 break;
399 case MPI2_EVENT_IR_PHYSICAL_DISK:
400 desc = "IR Physical Disk";
401 break;
402 case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
403 desc = "IR Configuration Change List";
404 break;
405 case MPI2_EVENT_LOG_ENTRY_ADDED:
406 desc = "Log Entry Added";
407 break;
408 }
409
410 if (!desc)
411 return;
412
413 printk(MPT2SAS_INFO_FMT "%s\n", ioc->name, desc);
414 }
415 #endif
416
417 /**
418 * _base_sas_log_info - verbose translation of firmware log info
419 * @ioc: pointer to scsi command object
420 * @log_info: log info
421 *
422 * Return nothing.
423 */
424 static void
425 _base_sas_log_info(struct MPT2SAS_ADAPTER *ioc , u32 log_info)
426 {
427 union loginfo_type {
428 u32 loginfo;
429 struct {
430 u32 subcode:16;
431 u32 code:8;
432 u32 originator:4;
433 u32 bus_type:4;
434 } dw;
435 };
436 union loginfo_type sas_loginfo;
437 char *originator_str = NULL;
438
439 sas_loginfo.loginfo = log_info;
440 if (sas_loginfo.dw.bus_type != 3 /*SAS*/)
441 return;
442
443 /* eat the loginfos associated with task aborts */
444 if (ioc->ignore_loginfos && (log_info == 30050000 || log_info ==
445 0x31140000 || log_info == 0x31130000))
446 return;
447
448 switch (sas_loginfo.dw.originator) {
449 case 0:
450 originator_str = "IOP";
451 break;
452 case 1:
453 originator_str = "PL";
454 break;
455 case 2:
456 originator_str = "IR";
457 break;
458 }
459
460 printk(MPT2SAS_WARN_FMT "log_info(0x%08x): originator(%s), "
461 "code(0x%02x), sub_code(0x%04x)\n", ioc->name, log_info,
462 originator_str, sas_loginfo.dw.code,
463 sas_loginfo.dw.subcode);
464 }
465
466 /**
467 * mpt2sas_base_fault_info - verbose translation of firmware FAULT code
468 * @ioc: pointer to scsi command object
469 * @fault_code: fault code
470 *
471 * Return nothing.
472 */
473 void
474 mpt2sas_base_fault_info(struct MPT2SAS_ADAPTER *ioc , u16 fault_code)
475 {
476 printk(MPT2SAS_ERR_FMT "fault_state(0x%04x)!\n",
477 ioc->name, fault_code);
478 }
479
480 /**
481 * _base_display_reply_info -
482 * @ioc: pointer to scsi command object
483 * @smid: system request message index
484 * @VF_ID: virtual function id
485 * @reply: reply message frame(lower 32bit addr)
486 *
487 * Return nothing.
488 */
489 static void
490 _base_display_reply_info(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID,
491 u32 reply)
492 {
493 MPI2DefaultReply_t *mpi_reply;
494 u16 ioc_status;
495
496 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
497 ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
498 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
499 if ((ioc_status & MPI2_IOCSTATUS_MASK) &&
500 (ioc->logging_level & MPT_DEBUG_REPLY)) {
501 _base_sas_ioc_info(ioc , mpi_reply,
502 mpt2sas_base_get_msg_frame(ioc, smid));
503 }
504 #endif
505 if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
506 _base_sas_log_info(ioc, le32_to_cpu(mpi_reply->IOCLogInfo));
507 }
508
509 /**
510 * mpt2sas_base_done - base internal command completion routine
511 * @ioc: pointer to scsi command object
512 * @smid: system request message index
513 * @VF_ID: virtual function id
514 * @reply: reply message frame(lower 32bit addr)
515 *
516 * Return nothing.
517 */
518 void
519 mpt2sas_base_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 VF_ID, u32 reply)
520 {
521 MPI2DefaultReply_t *mpi_reply;
522
523 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
524 if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
525 return;
526
527 if (ioc->base_cmds.status == MPT2_CMD_NOT_USED)
528 return;
529
530 ioc->base_cmds.status |= MPT2_CMD_COMPLETE;
531 if (mpi_reply) {
532 ioc->base_cmds.status |= MPT2_CMD_REPLY_VALID;
533 memcpy(ioc->base_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
534 }
535 ioc->base_cmds.status &= ~MPT2_CMD_PENDING;
536 complete(&ioc->base_cmds.done);
537 }
538
539 /**
540 * _base_async_event - main callback handler for firmware asyn events
541 * @ioc: pointer to scsi command object
542 * @VF_ID: virtual function id
543 * @reply: reply message frame(lower 32bit addr)
544 *
545 * Return nothing.
546 */
547 static void
548 _base_async_event(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID, u32 reply)
549 {
550 Mpi2EventNotificationReply_t *mpi_reply;
551 Mpi2EventAckRequest_t *ack_request;
552 u16 smid;
553
554 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
555 if (!mpi_reply)
556 return;
557 if (mpi_reply->Function != MPI2_FUNCTION_EVENT_NOTIFICATION)
558 return;
559 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
560 _base_display_event_data(ioc, mpi_reply);
561 #endif
562 if (!(mpi_reply->AckRequired & MPI2_EVENT_NOTIFICATION_ACK_REQUIRED))
563 goto out;
564 smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
565 if (!smid) {
566 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
567 ioc->name, __func__);
568 goto out;
569 }
570
571 ack_request = mpt2sas_base_get_msg_frame(ioc, smid);
572 memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
573 ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
574 ack_request->Event = mpi_reply->Event;
575 ack_request->EventContext = mpi_reply->EventContext;
576 ack_request->VF_ID = VF_ID;
577 mpt2sas_base_put_smid_default(ioc, smid, VF_ID);
578
579 out:
580
581 /* scsih callback handler */
582 mpt2sas_scsih_event_callback(ioc, VF_ID, reply);
583
584 /* ctl callback handler */
585 mpt2sas_ctl_event_callback(ioc, VF_ID, reply);
586 }
587
588 /**
589 * _base_mask_interrupts - disable interrupts
590 * @ioc: pointer to scsi command object
591 *
592 * Disabling ResetIRQ, Reply and Doorbell Interrupts
593 *
594 * Return nothing.
595 */
596 static void
597 _base_mask_interrupts(struct MPT2SAS_ADAPTER *ioc)
598 {
599 u32 him_register;
600
601 ioc->mask_interrupts = 1;
602 him_register = readl(&ioc->chip->HostInterruptMask);
603 him_register |= MPI2_HIM_DIM + MPI2_HIM_RIM + MPI2_HIM_RESET_IRQ_MASK;
604 writel(him_register, &ioc->chip->HostInterruptMask);
605 readl(&ioc->chip->HostInterruptMask);
606 }
607
608 /**
609 * _base_unmask_interrupts - enable interrupts
610 * @ioc: pointer to scsi command object
611 *
612 * Enabling only Reply Interrupts
613 *
614 * Return nothing.
615 */
616 static void
617 _base_unmask_interrupts(struct MPT2SAS_ADAPTER *ioc)
618 {
619 u32 him_register;
620
621 writel(0, &ioc->chip->HostInterruptStatus);
622 him_register = readl(&ioc->chip->HostInterruptMask);
623 him_register &= ~MPI2_HIM_RIM;
624 writel(him_register, &ioc->chip->HostInterruptMask);
625 ioc->mask_interrupts = 0;
626 }
627
628 /**
629 * _base_interrupt - MPT adapter (IOC) specific interrupt handler.
630 * @irq: irq number (not used)
631 * @bus_id: bus identifier cookie == pointer to MPT_ADAPTER structure
632 * @r: pt_regs pointer (not used)
633 *
634 * Return IRQ_HANDLE if processed, else IRQ_NONE.
635 */
636 static irqreturn_t
637 _base_interrupt(int irq, void *bus_id)
638 {
639 union reply_descriptor {
640 u64 word;
641 struct {
642 u32 low;
643 u32 high;
644 } u;
645 };
646 union reply_descriptor rd;
647 u32 post_index, post_index_next, completed_cmds;
648 u8 request_desript_type;
649 u16 smid;
650 u8 cb_idx;
651 u32 reply;
652 u8 VF_ID;
653 int i;
654 struct MPT2SAS_ADAPTER *ioc = bus_id;
655
656 if (ioc->mask_interrupts)
657 return IRQ_NONE;
658
659 post_index = ioc->reply_post_host_index;
660 request_desript_type = ioc->reply_post_free[post_index].
661 Default.ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
662 if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
663 return IRQ_NONE;
664
665 completed_cmds = 0;
666 do {
667 rd.word = ioc->reply_post_free[post_index].Words;
668 if (rd.u.low == UINT_MAX || rd.u.high == UINT_MAX)
669 goto out;
670 reply = 0;
671 cb_idx = 0xFF;
672 smid = le16_to_cpu(ioc->reply_post_free[post_index].
673 Default.DescriptorTypeDependent1);
674 VF_ID = ioc->reply_post_free[post_index].
675 Default.VF_ID;
676 if (request_desript_type ==
677 MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY) {
678 reply = le32_to_cpu(ioc->reply_post_free[post_index].
679 AddressReply.ReplyFrameAddress);
680 } else if (request_desript_type ==
681 MPI2_RPY_DESCRIPT_FLAGS_TARGET_COMMAND_BUFFER)
682 goto next;
683 else if (request_desript_type ==
684 MPI2_RPY_DESCRIPT_FLAGS_TARGETASSIST_SUCCESS)
685 goto next;
686 if (smid)
687 cb_idx = ioc->scsi_lookup[smid - 1].cb_idx;
688 if (smid && cb_idx != 0xFF) {
689 mpt_callbacks[cb_idx](ioc, smid, VF_ID, reply);
690 if (reply)
691 _base_display_reply_info(ioc, smid, VF_ID,
692 reply);
693 mpt2sas_base_free_smid(ioc, smid);
694 }
695 if (!smid)
696 _base_async_event(ioc, VF_ID, reply);
697
698 /* reply free queue handling */
699 if (reply) {
700 ioc->reply_free_host_index =
701 (ioc->reply_free_host_index ==
702 (ioc->reply_free_queue_depth - 1)) ?
703 0 : ioc->reply_free_host_index + 1;
704 ioc->reply_free[ioc->reply_free_host_index] =
705 cpu_to_le32(reply);
706 writel(ioc->reply_free_host_index,
707 &ioc->chip->ReplyFreeHostIndex);
708 wmb();
709 }
710
711 next:
712 post_index_next = (post_index == (ioc->reply_post_queue_depth -
713 1)) ? 0 : post_index + 1;
714 request_desript_type =
715 ioc->reply_post_free[post_index_next].Default.ReplyFlags
716 & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
717 completed_cmds++;
718 if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
719 goto out;
720 post_index = post_index_next;
721 } while (1);
722
723 out:
724
725 if (!completed_cmds)
726 return IRQ_NONE;
727
728 /* reply post descriptor handling */
729 post_index_next = ioc->reply_post_host_index;
730 for (i = 0 ; i < completed_cmds; i++) {
731 post_index = post_index_next;
732 /* poison the reply post descriptor */
733 ioc->reply_post_free[post_index_next].Words = ULLONG_MAX;
734 post_index_next = (post_index ==
735 (ioc->reply_post_queue_depth - 1))
736 ? 0 : post_index + 1;
737 }
738 ioc->reply_post_host_index = post_index_next;
739 writel(post_index_next, &ioc->chip->ReplyPostHostIndex);
740 wmb();
741 return IRQ_HANDLED;
742 }
743
744 /**
745 * mpt2sas_base_release_callback_handler - clear interupt callback handler
746 * @cb_idx: callback index
747 *
748 * Return nothing.
749 */
750 void
751 mpt2sas_base_release_callback_handler(u8 cb_idx)
752 {
753 mpt_callbacks[cb_idx] = NULL;
754 }
755
756 /**
757 * mpt2sas_base_register_callback_handler - obtain index for the interrupt callback handler
758 * @cb_func: callback function
759 *
760 * Returns cb_func.
761 */
762 u8
763 mpt2sas_base_register_callback_handler(MPT_CALLBACK cb_func)
764 {
765 u8 cb_idx;
766
767 for (cb_idx = MPT_MAX_CALLBACKS-1; cb_idx; cb_idx--)
768 if (mpt_callbacks[cb_idx] == NULL)
769 break;
770
771 mpt_callbacks[cb_idx] = cb_func;
772 return cb_idx;
773 }
774
775 /**
776 * mpt2sas_base_initialize_callback_handler - initialize the interrupt callback handler
777 *
778 * Return nothing.
779 */
780 void
781 mpt2sas_base_initialize_callback_handler(void)
782 {
783 u8 cb_idx;
784
785 for (cb_idx = 0; cb_idx < MPT_MAX_CALLBACKS; cb_idx++)
786 mpt2sas_base_release_callback_handler(cb_idx);
787 }
788
789 /**
790 * mpt2sas_base_build_zero_len_sge - build zero length sg entry
791 * @ioc: per adapter object
792 * @paddr: virtual address for SGE
793 *
794 * Create a zero length scatter gather entry to insure the IOCs hardware has
795 * something to use if the target device goes brain dead and tries
796 * to send data even when none is asked for.
797 *
798 * Return nothing.
799 */
800 void
801 mpt2sas_base_build_zero_len_sge(struct MPT2SAS_ADAPTER *ioc, void *paddr)
802 {
803 u32 flags_length = (u32)((MPI2_SGE_FLAGS_LAST_ELEMENT |
804 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST |
805 MPI2_SGE_FLAGS_SIMPLE_ELEMENT) <<
806 MPI2_SGE_FLAGS_SHIFT);
807 ioc->base_add_sg_single(paddr, flags_length, -1);
808 }
809
810 /**
811 * _base_add_sg_single_32 - Place a simple 32 bit SGE at address pAddr.
812 * @paddr: virtual address for SGE
813 * @flags_length: SGE flags and data transfer length
814 * @dma_addr: Physical address
815 *
816 * Return nothing.
817 */
818 static void
819 _base_add_sg_single_32(void *paddr, u32 flags_length, dma_addr_t dma_addr)
820 {
821 Mpi2SGESimple32_t *sgel = paddr;
822
823 flags_length |= (MPI2_SGE_FLAGS_32_BIT_ADDRESSING |
824 MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
825 sgel->FlagsLength = cpu_to_le32(flags_length);
826 sgel->Address = cpu_to_le32(dma_addr);
827 }
828
829
830 /**
831 * _base_add_sg_single_64 - Place a simple 64 bit SGE at address pAddr.
832 * @paddr: virtual address for SGE
833 * @flags_length: SGE flags and data transfer length
834 * @dma_addr: Physical address
835 *
836 * Return nothing.
837 */
838 static void
839 _base_add_sg_single_64(void *paddr, u32 flags_length, dma_addr_t dma_addr)
840 {
841 Mpi2SGESimple64_t *sgel = paddr;
842
843 flags_length |= (MPI2_SGE_FLAGS_64_BIT_ADDRESSING |
844 MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
845 sgel->FlagsLength = cpu_to_le32(flags_length);
846 sgel->Address = cpu_to_le64(dma_addr);
847 }
848
849 #define convert_to_kb(x) ((x) << (PAGE_SHIFT - 10))
850
851 /**
852 * _base_config_dma_addressing - set dma addressing
853 * @ioc: per adapter object
854 * @pdev: PCI device struct
855 *
856 * Returns 0 for success, non-zero for failure.
857 */
858 static int
859 _base_config_dma_addressing(struct MPT2SAS_ADAPTER *ioc, struct pci_dev *pdev)
860 {
861 struct sysinfo s;
862 char *desc = NULL;
863
864 if (sizeof(dma_addr_t) > 4) {
865 const uint64_t required_mask =
866 dma_get_required_mask(&pdev->dev);
867 if ((required_mask > DMA_BIT_MASK(32)) && !pci_set_dma_mask(pdev,
868 DMA_BIT_MASK(64)) && !pci_set_consistent_dma_mask(pdev,
869 DMA_BIT_MASK(64))) {
870 ioc->base_add_sg_single = &_base_add_sg_single_64;
871 ioc->sge_size = sizeof(Mpi2SGESimple64_t);
872 desc = "64";
873 goto out;
874 }
875 }
876
877 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
878 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
879 ioc->base_add_sg_single = &_base_add_sg_single_32;
880 ioc->sge_size = sizeof(Mpi2SGESimple32_t);
881 desc = "32";
882 } else
883 return -ENODEV;
884
885 out:
886 si_meminfo(&s);
887 printk(MPT2SAS_INFO_FMT "%s BIT PCI BUS DMA ADDRESSING SUPPORTED, "
888 "total mem (%ld kB)\n", ioc->name, desc, convert_to_kb(s.totalram));
889
890 return 0;
891 }
892
893 /**
894 * _base_save_msix_table - backup msix vector table
895 * @ioc: per adapter object
896 *
897 * This address an errata where diag reset clears out the table
898 */
899 static void
900 _base_save_msix_table(struct MPT2SAS_ADAPTER *ioc)
901 {
902 int i;
903
904 if (!ioc->msix_enable || ioc->msix_table_backup == NULL)
905 return;
906
907 for (i = 0; i < ioc->msix_vector_count; i++)
908 ioc->msix_table_backup[i] = ioc->msix_table[i];
909 }
910
911 /**
912 * _base_restore_msix_table - this restores the msix vector table
913 * @ioc: per adapter object
914 *
915 */
916 static void
917 _base_restore_msix_table(struct MPT2SAS_ADAPTER *ioc)
918 {
919 int i;
920
921 if (!ioc->msix_enable || ioc->msix_table_backup == NULL)
922 return;
923
924 for (i = 0; i < ioc->msix_vector_count; i++)
925 ioc->msix_table[i] = ioc->msix_table_backup[i];
926 }
927
928 /**
929 * _base_check_enable_msix - checks MSIX capabable.
930 * @ioc: per adapter object
931 *
932 * Check to see if card is capable of MSIX, and set number
933 * of avaliable msix vectors
934 */
935 static int
936 _base_check_enable_msix(struct MPT2SAS_ADAPTER *ioc)
937 {
938 int base;
939 u16 message_control;
940 u32 msix_table_offset;
941
942 base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX);
943 if (!base) {
944 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "msix not "
945 "supported\n", ioc->name));
946 return -EINVAL;
947 }
948
949 /* get msix vector count */
950 pci_read_config_word(ioc->pdev, base + 2, &message_control);
951 ioc->msix_vector_count = (message_control & 0x3FF) + 1;
952
953 /* get msix table */
954 pci_read_config_dword(ioc->pdev, base + 4, &msix_table_offset);
955 msix_table_offset &= 0xFFFFFFF8;
956 ioc->msix_table = (u32 *)((void *)ioc->chip + msix_table_offset);
957
958 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "msix is supported, "
959 "vector_count(%d), table_offset(0x%08x), table(%p)\n", ioc->name,
960 ioc->msix_vector_count, msix_table_offset, ioc->msix_table));
961 return 0;
962 }
963
964 /**
965 * _base_disable_msix - disables msix
966 * @ioc: per adapter object
967 *
968 */
969 static void
970 _base_disable_msix(struct MPT2SAS_ADAPTER *ioc)
971 {
972 if (ioc->msix_enable) {
973 pci_disable_msix(ioc->pdev);
974 kfree(ioc->msix_table_backup);
975 ioc->msix_table_backup = NULL;
976 ioc->msix_enable = 0;
977 }
978 }
979
980 /**
981 * _base_enable_msix - enables msix, failback to io_apic
982 * @ioc: per adapter object
983 *
984 */
985 static int
986 _base_enable_msix(struct MPT2SAS_ADAPTER *ioc)
987 {
988 struct msix_entry entries;
989 int r;
990 u8 try_msix = 0;
991
992 if (msix_disable == -1 || msix_disable == 0)
993 try_msix = 1;
994
995 if (!try_msix)
996 goto try_ioapic;
997
998 if (_base_check_enable_msix(ioc) != 0)
999 goto try_ioapic;
1000
1001 ioc->msix_table_backup = kcalloc(ioc->msix_vector_count,
1002 sizeof(u32), GFP_KERNEL);
1003 if (!ioc->msix_table_backup) {
1004 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation for "
1005 "msix_table_backup failed!!!\n", ioc->name));
1006 goto try_ioapic;
1007 }
1008
1009 memset(&entries, 0, sizeof(struct msix_entry));
1010 r = pci_enable_msix(ioc->pdev, &entries, 1);
1011 if (r) {
1012 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "pci_enable_msix "
1013 "failed (r=%d) !!!\n", ioc->name, r));
1014 goto try_ioapic;
1015 }
1016
1017 r = request_irq(entries.vector, _base_interrupt, IRQF_SHARED,
1018 ioc->name, ioc);
1019 if (r) {
1020 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "unable to allocate "
1021 "interrupt %d !!!\n", ioc->name, entries.vector));
1022 pci_disable_msix(ioc->pdev);
1023 goto try_ioapic;
1024 }
1025
1026 ioc->pci_irq = entries.vector;
1027 ioc->msix_enable = 1;
1028 return 0;
1029
1030 /* failback to io_apic interrupt routing */
1031 try_ioapic:
1032
1033 r = request_irq(ioc->pdev->irq, _base_interrupt, IRQF_SHARED,
1034 ioc->name, ioc);
1035 if (r) {
1036 printk(MPT2SAS_ERR_FMT "unable to allocate interrupt %d!\n",
1037 ioc->name, ioc->pdev->irq);
1038 r = -EBUSY;
1039 goto out_fail;
1040 }
1041
1042 ioc->pci_irq = ioc->pdev->irq;
1043 return 0;
1044
1045 out_fail:
1046 return r;
1047 }
1048
1049 /**
1050 * mpt2sas_base_map_resources - map in controller resources (io/irq/memap)
1051 * @ioc: per adapter object
1052 *
1053 * Returns 0 for success, non-zero for failure.
1054 */
1055 int
1056 mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
1057 {
1058 struct pci_dev *pdev = ioc->pdev;
1059 u32 memap_sz;
1060 u32 pio_sz;
1061 int i, r = 0;
1062
1063 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n",
1064 ioc->name, __func__));
1065
1066 ioc->bars = pci_select_bars(pdev, IORESOURCE_MEM);
1067 if (pci_enable_device_mem(pdev)) {
1068 printk(MPT2SAS_WARN_FMT "pci_enable_device_mem: "
1069 "failed\n", ioc->name);
1070 return -ENODEV;
1071 }
1072
1073
1074 if (pci_request_selected_regions(pdev, ioc->bars,
1075 MPT2SAS_DRIVER_NAME)) {
1076 printk(MPT2SAS_WARN_FMT "pci_request_selected_regions: "
1077 "failed\n", ioc->name);
1078 r = -ENODEV;
1079 goto out_fail;
1080 }
1081
1082 pci_set_master(pdev);
1083
1084 if (_base_config_dma_addressing(ioc, pdev) != 0) {
1085 printk(MPT2SAS_WARN_FMT "no suitable DMA mask for %s\n",
1086 ioc->name, pci_name(pdev));
1087 r = -ENODEV;
1088 goto out_fail;
1089 }
1090
1091 for (i = 0, memap_sz = 0, pio_sz = 0 ; i < DEVICE_COUNT_RESOURCE; i++) {
1092 if (pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE_IO) {
1093 if (pio_sz)
1094 continue;
1095 ioc->pio_chip = pci_resource_start(pdev, i);
1096 pio_sz = pci_resource_len(pdev, i);
1097 } else {
1098 if (memap_sz)
1099 continue;
1100 ioc->chip_phys = pci_resource_start(pdev, i);
1101 memap_sz = pci_resource_len(pdev, i);
1102 ioc->chip = ioremap(ioc->chip_phys, memap_sz);
1103 if (ioc->chip == NULL) {
1104 printk(MPT2SAS_ERR_FMT "unable to map adapter "
1105 "memory!\n", ioc->name);
1106 r = -EINVAL;
1107 goto out_fail;
1108 }
1109 }
1110 }
1111
1112 pci_set_drvdata(pdev, ioc->shost);
1113 _base_mask_interrupts(ioc);
1114 r = _base_enable_msix(ioc);
1115 if (r)
1116 goto out_fail;
1117
1118 printk(MPT2SAS_INFO_FMT "%s: IRQ %d\n",
1119 ioc->name, ((ioc->msix_enable) ? "PCI-MSI-X enabled" :
1120 "IO-APIC enabled"), ioc->pci_irq);
1121 printk(MPT2SAS_INFO_FMT "iomem(0x%lx), mapped(0x%p), size(%d)\n",
1122 ioc->name, ioc->chip_phys, ioc->chip, memap_sz);
1123 printk(MPT2SAS_INFO_FMT "ioport(0x%lx), size(%d)\n",
1124 ioc->name, ioc->pio_chip, pio_sz);
1125
1126 return 0;
1127
1128 out_fail:
1129 if (ioc->chip_phys)
1130 iounmap(ioc->chip);
1131 ioc->chip_phys = 0;
1132 ioc->pci_irq = -1;
1133 pci_release_selected_regions(ioc->pdev, ioc->bars);
1134 pci_disable_device(pdev);
1135 pci_set_drvdata(pdev, NULL);
1136 return r;
1137 }
1138
1139 /**
1140 * mpt2sas_base_get_msg_frame_dma - obtain request mf pointer phys addr
1141 * @ioc: per adapter object
1142 * @smid: system request message index(smid zero is invalid)
1143 *
1144 * Returns phys pointer to message frame.
1145 */
1146 dma_addr_t
1147 mpt2sas_base_get_msg_frame_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1148 {
1149 return ioc->request_dma + (smid * ioc->request_sz);
1150 }
1151
1152 /**
1153 * mpt2sas_base_get_msg_frame - obtain request mf pointer
1154 * @ioc: per adapter object
1155 * @smid: system request message index(smid zero is invalid)
1156 *
1157 * Returns virt pointer to message frame.
1158 */
1159 void *
1160 mpt2sas_base_get_msg_frame(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1161 {
1162 return (void *)(ioc->request + (smid * ioc->request_sz));
1163 }
1164
1165 /**
1166 * mpt2sas_base_get_sense_buffer - obtain a sense buffer assigned to a mf request
1167 * @ioc: per adapter object
1168 * @smid: system request message index
1169 *
1170 * Returns virt pointer to sense buffer.
1171 */
1172 void *
1173 mpt2sas_base_get_sense_buffer(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1174 {
1175 return (void *)(ioc->sense + ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1176 }
1177
1178 /**
1179 * mpt2sas_base_get_sense_buffer_dma - obtain a sense buffer assigned to a mf request
1180 * @ioc: per adapter object
1181 * @smid: system request message index
1182 *
1183 * Returns phys pointer to sense buffer.
1184 */
1185 dma_addr_t
1186 mpt2sas_base_get_sense_buffer_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1187 {
1188 return ioc->sense_dma + ((smid - 1) * SCSI_SENSE_BUFFERSIZE);
1189 }
1190
1191 /**
1192 * mpt2sas_base_get_reply_virt_addr - obtain reply frames virt address
1193 * @ioc: per adapter object
1194 * @phys_addr: lower 32 physical addr of the reply
1195 *
1196 * Converts 32bit lower physical addr into a virt address.
1197 */
1198 void *
1199 mpt2sas_base_get_reply_virt_addr(struct MPT2SAS_ADAPTER *ioc, u32 phys_addr)
1200 {
1201 if (!phys_addr)
1202 return NULL;
1203 return ioc->reply + (phys_addr - (u32)ioc->reply_dma);
1204 }
1205
1206 /**
1207 * mpt2sas_base_get_smid - obtain a free smid
1208 * @ioc: per adapter object
1209 * @cb_idx: callback index
1210 *
1211 * Returns smid (zero is invalid)
1212 */
1213 u16
1214 mpt2sas_base_get_smid(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1215 {
1216 unsigned long flags;
1217 struct request_tracker *request;
1218 u16 smid;
1219
1220 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1221 if (list_empty(&ioc->free_list)) {
1222 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1223 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1224 ioc->name, __func__);
1225 return 0;
1226 }
1227
1228 request = list_entry(ioc->free_list.next,
1229 struct request_tracker, tracker_list);
1230 request->cb_idx = cb_idx;
1231 smid = request->smid;
1232 list_del(&request->tracker_list);
1233 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1234 return smid;
1235 }
1236
1237
1238 /**
1239 * mpt2sas_base_free_smid - put smid back on free_list
1240 * @ioc: per adapter object
1241 * @smid: system request message index
1242 *
1243 * Return nothing.
1244 */
1245 void
1246 mpt2sas_base_free_smid(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1247 {
1248 unsigned long flags;
1249
1250 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1251 ioc->scsi_lookup[smid - 1].cb_idx = 0xFF;
1252 list_add_tail(&ioc->scsi_lookup[smid - 1].tracker_list,
1253 &ioc->free_list);
1254 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1255
1256 /*
1257 * See _wait_for_commands_to_complete() call with regards to this code.
1258 */
1259 if (ioc->shost_recovery && ioc->pending_io_count) {
1260 if (ioc->pending_io_count == 1)
1261 wake_up(&ioc->reset_wq);
1262 ioc->pending_io_count--;
1263 }
1264 }
1265
1266 /**
1267 * _base_writeq - 64 bit write to MMIO
1268 * @ioc: per adapter object
1269 * @b: data payload
1270 * @addr: address in MMIO space
1271 * @writeq_lock: spin lock
1272 *
1273 * Glue for handling an atomic 64 bit word to MMIO. This special handling takes
1274 * care of 32 bit environment where its not quarenteed to send the entire word
1275 * in one transfer.
1276 */
1277 #ifndef writeq
1278 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1279 spinlock_t *writeq_lock)
1280 {
1281 unsigned long flags;
1282 __u64 data_out = cpu_to_le64(b);
1283
1284 spin_lock_irqsave(writeq_lock, flags);
1285 writel((u32)(data_out), addr);
1286 writel((u32)(data_out >> 32), (addr + 4));
1287 spin_unlock_irqrestore(writeq_lock, flags);
1288 }
1289 #else
1290 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1291 spinlock_t *writeq_lock)
1292 {
1293 writeq(cpu_to_le64(b), addr);
1294 }
1295 #endif
1296
1297 /**
1298 * mpt2sas_base_put_smid_scsi_io - send SCSI_IO request to firmware
1299 * @ioc: per adapter object
1300 * @smid: system request message index
1301 * @vf_id: virtual function id
1302 * @handle: device handle
1303 *
1304 * Return nothing.
1305 */
1306 void
1307 mpt2sas_base_put_smid_scsi_io(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 vf_id,
1308 u16 handle)
1309 {
1310 Mpi2RequestDescriptorUnion_t descriptor;
1311 u64 *request = (u64 *)&descriptor;
1312
1313
1314 descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
1315 descriptor.SCSIIO.VF_ID = vf_id;
1316 descriptor.SCSIIO.SMID = cpu_to_le16(smid);
1317 descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
1318 descriptor.SCSIIO.LMID = 0;
1319 _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1320 &ioc->scsi_lookup_lock);
1321 }
1322
1323
1324 /**
1325 * mpt2sas_base_put_smid_hi_priority - send Task Managment request to firmware
1326 * @ioc: per adapter object
1327 * @smid: system request message index
1328 * @vf_id: virtual function id
1329 *
1330 * Return nothing.
1331 */
1332 void
1333 mpt2sas_base_put_smid_hi_priority(struct MPT2SAS_ADAPTER *ioc, u16 smid,
1334 u8 vf_id)
1335 {
1336 Mpi2RequestDescriptorUnion_t descriptor;
1337 u64 *request = (u64 *)&descriptor;
1338
1339 descriptor.HighPriority.RequestFlags =
1340 MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY;
1341 descriptor.HighPriority.VF_ID = vf_id;
1342 descriptor.HighPriority.SMID = cpu_to_le16(smid);
1343 descriptor.HighPriority.LMID = 0;
1344 descriptor.HighPriority.Reserved1 = 0;
1345 _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1346 &ioc->scsi_lookup_lock);
1347 }
1348
1349 /**
1350 * mpt2sas_base_put_smid_default - Default, primarily used for config pages
1351 * @ioc: per adapter object
1352 * @smid: system request message index
1353 * @vf_id: virtual function id
1354 *
1355 * Return nothing.
1356 */
1357 void
1358 mpt2sas_base_put_smid_default(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 vf_id)
1359 {
1360 Mpi2RequestDescriptorUnion_t descriptor;
1361 u64 *request = (u64 *)&descriptor;
1362
1363 descriptor.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
1364 descriptor.Default.VF_ID = vf_id;
1365 descriptor.Default.SMID = cpu_to_le16(smid);
1366 descriptor.Default.LMID = 0;
1367 descriptor.Default.DescriptorTypeDependent = 0;
1368 _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1369 &ioc->scsi_lookup_lock);
1370 }
1371
1372 /**
1373 * mpt2sas_base_put_smid_target_assist - send Target Assist/Status to firmware
1374 * @ioc: per adapter object
1375 * @smid: system request message index
1376 * @vf_id: virtual function id
1377 * @io_index: value used to track the IO
1378 *
1379 * Return nothing.
1380 */
1381 void
1382 mpt2sas_base_put_smid_target_assist(struct MPT2SAS_ADAPTER *ioc, u16 smid,
1383 u8 vf_id, u16 io_index)
1384 {
1385 Mpi2RequestDescriptorUnion_t descriptor;
1386 u64 *request = (u64 *)&descriptor;
1387
1388 descriptor.SCSITarget.RequestFlags =
1389 MPI2_REQ_DESCRIPT_FLAGS_SCSI_TARGET;
1390 descriptor.SCSITarget.VF_ID = vf_id;
1391 descriptor.SCSITarget.SMID = cpu_to_le16(smid);
1392 descriptor.SCSITarget.LMID = 0;
1393 descriptor.SCSITarget.IoIndex = cpu_to_le16(io_index);
1394 _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1395 &ioc->scsi_lookup_lock);
1396 }
1397
1398 /**
1399 * _base_display_ioc_capabilities - Disply IOC's capabilities.
1400 * @ioc: per adapter object
1401 *
1402 * Return nothing.
1403 */
1404 static void
1405 _base_display_ioc_capabilities(struct MPT2SAS_ADAPTER *ioc)
1406 {
1407 int i = 0;
1408 char desc[16];
1409 u8 revision;
1410 u32 iounit_pg1_flags;
1411
1412 pci_read_config_byte(ioc->pdev, PCI_CLASS_REVISION, &revision);
1413 strncpy(desc, ioc->manu_pg0.ChipName, 16);
1414 printk(MPT2SAS_INFO_FMT "%s: FWVersion(%02d.%02d.%02d.%02d), "
1415 "ChipRevision(0x%02x), BiosVersion(%02d.%02d.%02d.%02d)\n",
1416 ioc->name, desc,
1417 (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
1418 (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
1419 (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
1420 ioc->facts.FWVersion.Word & 0x000000FF,
1421 revision,
1422 (ioc->bios_pg3.BiosVersion & 0xFF000000) >> 24,
1423 (ioc->bios_pg3.BiosVersion & 0x00FF0000) >> 16,
1424 (ioc->bios_pg3.BiosVersion & 0x0000FF00) >> 8,
1425 ioc->bios_pg3.BiosVersion & 0x000000FF);
1426
1427 printk(MPT2SAS_INFO_FMT "Protocol=(", ioc->name);
1428
1429 if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR) {
1430 printk("Initiator");
1431 i++;
1432 }
1433
1434 if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_TARGET) {
1435 printk("%sTarget", i ? "," : "");
1436 i++;
1437 }
1438
1439 i = 0;
1440 printk("), ");
1441 printk("Capabilities=(");
1442
1443 if (ioc->facts.IOCCapabilities &
1444 MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID) {
1445 printk("Raid");
1446 i++;
1447 }
1448
1449 if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR) {
1450 printk("%sTLR", i ? "," : "");
1451 i++;
1452 }
1453
1454 if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_MULTICAST) {
1455 printk("%sMulticast", i ? "," : "");
1456 i++;
1457 }
1458
1459 if (ioc->facts.IOCCapabilities &
1460 MPI2_IOCFACTS_CAPABILITY_BIDIRECTIONAL_TARGET) {
1461 printk("%sBIDI Target", i ? "," : "");
1462 i++;
1463 }
1464
1465 if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP) {
1466 printk("%sEEDP", i ? "," : "");
1467 i++;
1468 }
1469
1470 if (ioc->facts.IOCCapabilities &
1471 MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) {
1472 printk("%sSnapshot Buffer", i ? "," : "");
1473 i++;
1474 }
1475
1476 if (ioc->facts.IOCCapabilities &
1477 MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) {
1478 printk("%sDiag Trace Buffer", i ? "," : "");
1479 i++;
1480 }
1481
1482 if (ioc->facts.IOCCapabilities &
1483 MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING) {
1484 printk("%sTask Set Full", i ? "," : "");
1485 i++;
1486 }
1487
1488 iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
1489 if (!(iounit_pg1_flags & MPI2_IOUNITPAGE1_NATIVE_COMMAND_Q_DISABLE)) {
1490 printk("%sNCQ", i ? "," : "");
1491 i++;
1492 }
1493
1494 printk(")\n");
1495 }
1496
1497 /**
1498 * _base_static_config_pages - static start of day config pages
1499 * @ioc: per adapter object
1500 *
1501 * Return nothing.
1502 */
1503 static void
1504 _base_static_config_pages(struct MPT2SAS_ADAPTER *ioc)
1505 {
1506 Mpi2ConfigReply_t mpi_reply;
1507 u32 iounit_pg1_flags;
1508
1509 mpt2sas_config_get_manufacturing_pg0(ioc, &mpi_reply, &ioc->manu_pg0);
1510 mpt2sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2);
1511 mpt2sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3);
1512 mpt2sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8);
1513 mpt2sas_config_get_iounit_pg0(ioc, &mpi_reply, &ioc->iounit_pg0);
1514 mpt2sas_config_get_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
1515 _base_display_ioc_capabilities(ioc);
1516
1517 /*
1518 * Enable task_set_full handling in iounit_pg1 when the
1519 * facts capabilities indicate that its supported.
1520 */
1521 iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
1522 if ((ioc->facts.IOCCapabilities &
1523 MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING))
1524 iounit_pg1_flags &=
1525 ~MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
1526 else
1527 iounit_pg1_flags |=
1528 MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
1529 ioc->iounit_pg1.Flags = cpu_to_le32(iounit_pg1_flags);
1530 mpt2sas_config_set_iounit_pg1(ioc, &mpi_reply, ioc->iounit_pg1);
1531 }
1532
1533 /**
1534 * _base_release_memory_pools - release memory
1535 * @ioc: per adapter object
1536 *
1537 * Free memory allocated from _base_allocate_memory_pools.
1538 *
1539 * Return nothing.
1540 */
1541 static void
1542 _base_release_memory_pools(struct MPT2SAS_ADAPTER *ioc)
1543 {
1544 dexitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1545 __func__));
1546
1547 if (ioc->request) {
1548 pci_free_consistent(ioc->pdev, ioc->request_dma_sz,
1549 ioc->request, ioc->request_dma);
1550 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "request_pool(0x%p)"
1551 ": free\n", ioc->name, ioc->request));
1552 ioc->request = NULL;
1553 }
1554
1555 if (ioc->sense) {
1556 pci_pool_free(ioc->sense_dma_pool, ioc->sense, ioc->sense_dma);
1557 if (ioc->sense_dma_pool)
1558 pci_pool_destroy(ioc->sense_dma_pool);
1559 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_pool(0x%p)"
1560 ": free\n", ioc->name, ioc->sense));
1561 ioc->sense = NULL;
1562 }
1563
1564 if (ioc->reply) {
1565 pci_pool_free(ioc->reply_dma_pool, ioc->reply, ioc->reply_dma);
1566 if (ioc->reply_dma_pool)
1567 pci_pool_destroy(ioc->reply_dma_pool);
1568 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_pool(0x%p)"
1569 ": free\n", ioc->name, ioc->reply));
1570 ioc->reply = NULL;
1571 }
1572
1573 if (ioc->reply_free) {
1574 pci_pool_free(ioc->reply_free_dma_pool, ioc->reply_free,
1575 ioc->reply_free_dma);
1576 if (ioc->reply_free_dma_pool)
1577 pci_pool_destroy(ioc->reply_free_dma_pool);
1578 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_pool"
1579 "(0x%p): free\n", ioc->name, ioc->reply_free));
1580 ioc->reply_free = NULL;
1581 }
1582
1583 if (ioc->reply_post_free) {
1584 pci_pool_free(ioc->reply_post_free_dma_pool,
1585 ioc->reply_post_free, ioc->reply_post_free_dma);
1586 if (ioc->reply_post_free_dma_pool)
1587 pci_pool_destroy(ioc->reply_post_free_dma_pool);
1588 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
1589 "reply_post_free_pool(0x%p): free\n", ioc->name,
1590 ioc->reply_post_free));
1591 ioc->reply_post_free = NULL;
1592 }
1593
1594 if (ioc->config_page) {
1595 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
1596 "config_page(0x%p): free\n", ioc->name,
1597 ioc->config_page));
1598 pci_free_consistent(ioc->pdev, ioc->config_page_sz,
1599 ioc->config_page, ioc->config_page_dma);
1600 }
1601
1602 kfree(ioc->scsi_lookup);
1603 }
1604
1605
1606 /**
1607 * _base_allocate_memory_pools - allocate start of day memory pools
1608 * @ioc: per adapter object
1609 * @sleep_flag: CAN_SLEEP or NO_SLEEP
1610 *
1611 * Returns 0 success, anything else error
1612 */
1613 static int
1614 _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
1615 {
1616 Mpi2IOCFactsReply_t *facts;
1617 u32 queue_size, queue_diff;
1618 u16 max_sge_elements;
1619 u16 num_of_reply_frames;
1620 u16 chains_needed_per_io;
1621 u32 sz, total_sz;
1622 u16 i;
1623 u32 retry_sz;
1624 u16 max_request_credit;
1625
1626 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1627 __func__));
1628
1629 retry_sz = 0;
1630 facts = &ioc->facts;
1631
1632 /* command line tunables for max sgl entries */
1633 if (max_sgl_entries != -1) {
1634 ioc->shost->sg_tablesize = (max_sgl_entries <
1635 MPT2SAS_SG_DEPTH) ? max_sgl_entries :
1636 MPT2SAS_SG_DEPTH;
1637 } else {
1638 ioc->shost->sg_tablesize = MPT2SAS_SG_DEPTH;
1639 }
1640
1641 /* command line tunables for max controller queue depth */
1642 if (max_queue_depth != -1) {
1643 max_request_credit = (max_queue_depth < facts->RequestCredit)
1644 ? max_queue_depth : facts->RequestCredit;
1645 } else {
1646 max_request_credit = (facts->RequestCredit >
1647 MPT2SAS_MAX_REQUEST_QUEUE) ? MPT2SAS_MAX_REQUEST_QUEUE :
1648 facts->RequestCredit;
1649 }
1650 ioc->request_depth = max_request_credit;
1651
1652 /* request frame size */
1653 ioc->request_sz = facts->IOCRequestFrameSize * 4;
1654
1655 /* reply frame size */
1656 ioc->reply_sz = facts->ReplyFrameSize * 4;
1657
1658 retry_allocation:
1659 total_sz = 0;
1660 /* calculate number of sg elements left over in the 1st frame */
1661 max_sge_elements = ioc->request_sz - ((sizeof(Mpi2SCSIIORequest_t) -
1662 sizeof(Mpi2SGEIOUnion_t)) + ioc->sge_size);
1663 ioc->max_sges_in_main_message = max_sge_elements/ioc->sge_size;
1664
1665 /* now do the same for a chain buffer */
1666 max_sge_elements = ioc->request_sz - ioc->sge_size;
1667 ioc->max_sges_in_chain_message = max_sge_elements/ioc->sge_size;
1668
1669 ioc->chain_offset_value_for_main_message =
1670 ((sizeof(Mpi2SCSIIORequest_t) - sizeof(Mpi2SGEIOUnion_t)) +
1671 (ioc->max_sges_in_chain_message * ioc->sge_size)) / 4;
1672
1673 /*
1674 * MPT2SAS_SG_DEPTH = CONFIG_FUSION_MAX_SGE
1675 */
1676 chains_needed_per_io = ((ioc->shost->sg_tablesize -
1677 ioc->max_sges_in_main_message)/ioc->max_sges_in_chain_message)
1678 + 1;
1679 if (chains_needed_per_io > facts->MaxChainDepth) {
1680 chains_needed_per_io = facts->MaxChainDepth;
1681 ioc->shost->sg_tablesize = min_t(u16,
1682 ioc->max_sges_in_main_message + (ioc->max_sges_in_chain_message
1683 * chains_needed_per_io), ioc->shost->sg_tablesize);
1684 }
1685 ioc->chains_needed_per_io = chains_needed_per_io;
1686
1687 /* reply free queue sizing - taking into account for events */
1688 num_of_reply_frames = ioc->request_depth + 32;
1689
1690 /* number of replies frames can't be a multiple of 16 */
1691 /* decrease number of reply frames by 1 */
1692 if (!(num_of_reply_frames % 16))
1693 num_of_reply_frames--;
1694
1695 /* calculate number of reply free queue entries
1696 * (must be multiple of 16)
1697 */
1698
1699 /* (we know reply_free_queue_depth is not a multiple of 16) */
1700 queue_size = num_of_reply_frames;
1701 queue_size += 16 - (queue_size % 16);
1702 ioc->reply_free_queue_depth = queue_size;
1703
1704 /* reply descriptor post queue sizing */
1705 /* this size should be the number of request frames + number of reply
1706 * frames
1707 */
1708
1709 queue_size = ioc->request_depth + num_of_reply_frames + 1;
1710 /* round up to 16 byte boundary */
1711 if (queue_size % 16)
1712 queue_size += 16 - (queue_size % 16);
1713
1714 /* check against IOC maximum reply post queue depth */
1715 if (queue_size > facts->MaxReplyDescriptorPostQueueDepth) {
1716 queue_diff = queue_size -
1717 facts->MaxReplyDescriptorPostQueueDepth;
1718
1719 /* round queue_diff up to multiple of 16 */
1720 if (queue_diff % 16)
1721 queue_diff += 16 - (queue_diff % 16);
1722
1723 /* adjust request_depth, reply_free_queue_depth,
1724 * and queue_size
1725 */
1726 ioc->request_depth -= queue_diff;
1727 ioc->reply_free_queue_depth -= queue_diff;
1728 queue_size -= queue_diff;
1729 }
1730 ioc->reply_post_queue_depth = queue_size;
1731
1732 /* max scsi host queue depth */
1733 ioc->shost->can_queue = ioc->request_depth - INTERNAL_CMDS_COUNT;
1734 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsi host queue: depth"
1735 "(%d)\n", ioc->name, ioc->shost->can_queue));
1736
1737 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scatter gather: "
1738 "sge_in_main_msg(%d), sge_per_chain(%d), sge_per_io(%d), "
1739 "chains_per_io(%d)\n", ioc->name, ioc->max_sges_in_main_message,
1740 ioc->max_sges_in_chain_message, ioc->shost->sg_tablesize,
1741 ioc->chains_needed_per_io));
1742
1743 /* contiguous pool for request and chains, 16 byte align, one extra "
1744 * "frame for smid=0
1745 */
1746 ioc->chain_depth = ioc->chains_needed_per_io * ioc->request_depth;
1747 sz = ((ioc->request_depth + 1 + ioc->chain_depth) * ioc->request_sz);
1748
1749 ioc->request_dma_sz = sz;
1750 ioc->request = pci_alloc_consistent(ioc->pdev, sz, &ioc->request_dma);
1751 if (!ioc->request) {
1752 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
1753 "failed: req_depth(%d), chains_per_io(%d), frame_sz(%d), "
1754 "total(%d kB)\n", ioc->name, ioc->request_depth,
1755 ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
1756 if (ioc->request_depth < MPT2SAS_SAS_QUEUE_DEPTH)
1757 goto out;
1758 retry_sz += 64;
1759 ioc->request_depth = max_request_credit - retry_sz;
1760 goto retry_allocation;
1761 }
1762
1763 if (retry_sz)
1764 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
1765 "succeed: req_depth(%d), chains_per_io(%d), frame_sz(%d), "
1766 "total(%d kb)\n", ioc->name, ioc->request_depth,
1767 ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
1768
1769 ioc->chain = ioc->request + ((ioc->request_depth + 1) *
1770 ioc->request_sz);
1771 ioc->chain_dma = ioc->request_dma + ((ioc->request_depth + 1) *
1772 ioc->request_sz);
1773 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool(0x%p): "
1774 "depth(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
1775 ioc->request, ioc->request_depth, ioc->request_sz,
1776 ((ioc->request_depth + 1) * ioc->request_sz)/1024));
1777 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "chain pool(0x%p): depth"
1778 "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name, ioc->chain,
1779 ioc->chain_depth, ioc->request_sz, ((ioc->chain_depth *
1780 ioc->request_sz))/1024));
1781 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool: dma(0x%llx)\n",
1782 ioc->name, (unsigned long long) ioc->request_dma));
1783 total_sz += sz;
1784
1785 ioc->scsi_lookup = kcalloc(ioc->request_depth,
1786 sizeof(struct request_tracker), GFP_KERNEL);
1787 if (!ioc->scsi_lookup) {
1788 printk(MPT2SAS_ERR_FMT "scsi_lookup: kcalloc failed\n",
1789 ioc->name);
1790 goto out;
1791 }
1792
1793 /* initialize some bits */
1794 for (i = 0; i < ioc->request_depth; i++)
1795 ioc->scsi_lookup[i].smid = i + 1;
1796
1797 /* sense buffers, 4 byte align */
1798 sz = ioc->request_depth * SCSI_SENSE_BUFFERSIZE;
1799 ioc->sense_dma_pool = pci_pool_create("sense pool", ioc->pdev, sz, 4,
1800 0);
1801 if (!ioc->sense_dma_pool) {
1802 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_create failed\n",
1803 ioc->name);
1804 goto out;
1805 }
1806 ioc->sense = pci_pool_alloc(ioc->sense_dma_pool , GFP_KERNEL,
1807 &ioc->sense_dma);
1808 if (!ioc->sense) {
1809 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_alloc failed\n",
1810 ioc->name);
1811 goto out;
1812 }
1813 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
1814 "sense pool(0x%p): depth(%d), element_size(%d), pool_size"
1815 "(%d kB)\n", ioc->name, ioc->sense, ioc->request_depth,
1816 SCSI_SENSE_BUFFERSIZE, sz/1024));
1817 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_dma(0x%llx)\n",
1818 ioc->name, (unsigned long long)ioc->sense_dma));
1819 total_sz += sz;
1820
1821 /* reply pool, 4 byte align */
1822 sz = ioc->reply_free_queue_depth * ioc->reply_sz;
1823 ioc->reply_dma_pool = pci_pool_create("reply pool", ioc->pdev, sz, 4,
1824 0);
1825 if (!ioc->reply_dma_pool) {
1826 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_create failed\n",
1827 ioc->name);
1828 goto out;
1829 }
1830 ioc->reply = pci_pool_alloc(ioc->reply_dma_pool , GFP_KERNEL,
1831 &ioc->reply_dma);
1832 if (!ioc->reply) {
1833 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_alloc failed\n",
1834 ioc->name);
1835 goto out;
1836 }
1837 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply pool(0x%p): depth"
1838 "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name, ioc->reply,
1839 ioc->reply_free_queue_depth, ioc->reply_sz, sz/1024));
1840 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_dma(0x%llx)\n",
1841 ioc->name, (unsigned long long)ioc->reply_dma));
1842 total_sz += sz;
1843
1844 /* reply free queue, 16 byte align */
1845 sz = ioc->reply_free_queue_depth * 4;
1846 ioc->reply_free_dma_pool = pci_pool_create("reply_free pool",
1847 ioc->pdev, sz, 16, 0);
1848 if (!ioc->reply_free_dma_pool) {
1849 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_create "
1850 "failed\n", ioc->name);
1851 goto out;
1852 }
1853 ioc->reply_free = pci_pool_alloc(ioc->reply_free_dma_pool , GFP_KERNEL,
1854 &ioc->reply_free_dma);
1855 if (!ioc->reply_free) {
1856 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_alloc "
1857 "failed\n", ioc->name);
1858 goto out;
1859 }
1860 memset(ioc->reply_free, 0, sz);
1861 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free pool(0x%p): "
1862 "depth(%d), element_size(%d), pool_size(%d kB)\n", ioc->name,
1863 ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024));
1864 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_dma"
1865 "(0x%llx)\n", ioc->name, (unsigned long long)ioc->reply_free_dma));
1866 total_sz += sz;
1867
1868 /* reply post queue, 16 byte align */
1869 sz = ioc->reply_post_queue_depth * sizeof(Mpi2DefaultReplyDescriptor_t);
1870 ioc->reply_post_free_dma_pool = pci_pool_create("reply_post_free pool",
1871 ioc->pdev, sz, 16, 0);
1872 if (!ioc->reply_post_free_dma_pool) {
1873 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_create "
1874 "failed\n", ioc->name);
1875 goto out;
1876 }
1877 ioc->reply_post_free = pci_pool_alloc(ioc->reply_post_free_dma_pool ,
1878 GFP_KERNEL, &ioc->reply_post_free_dma);
1879 if (!ioc->reply_post_free) {
1880 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_alloc "
1881 "failed\n", ioc->name);
1882 goto out;
1883 }
1884 memset(ioc->reply_post_free, 0, sz);
1885 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply post free pool"
1886 "(0x%p): depth(%d), element_size(%d), pool_size(%d kB)\n",
1887 ioc->name, ioc->reply_post_free, ioc->reply_post_queue_depth, 8,
1888 sz/1024));
1889 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_post_free_dma = "
1890 "(0x%llx)\n", ioc->name, (unsigned long long)
1891 ioc->reply_post_free_dma));
1892 total_sz += sz;
1893
1894 ioc->config_page_sz = 512;
1895 ioc->config_page = pci_alloc_consistent(ioc->pdev,
1896 ioc->config_page_sz, &ioc->config_page_dma);
1897 if (!ioc->config_page) {
1898 printk(MPT2SAS_ERR_FMT "config page: pci_pool_alloc "
1899 "failed\n", ioc->name);
1900 goto out;
1901 }
1902 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config page(0x%p): size"
1903 "(%d)\n", ioc->name, ioc->config_page, ioc->config_page_sz));
1904 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config_page_dma"
1905 "(0x%llx)\n", ioc->name, (unsigned long long)ioc->config_page_dma));
1906 total_sz += ioc->config_page_sz;
1907
1908 printk(MPT2SAS_INFO_FMT "Allocated physical memory: size(%d kB)\n",
1909 ioc->name, total_sz/1024);
1910 printk(MPT2SAS_INFO_FMT "Current Controller Queue Depth(%d), "
1911 "Max Controller Queue Depth(%d)\n",
1912 ioc->name, ioc->shost->can_queue, facts->RequestCredit);
1913 printk(MPT2SAS_INFO_FMT "Scatter Gather Elements per IO(%d)\n",
1914 ioc->name, ioc->shost->sg_tablesize);
1915 return 0;
1916
1917 out:
1918 _base_release_memory_pools(ioc);
1919 return -ENOMEM;
1920 }
1921
1922
1923 /**
1924 * mpt2sas_base_get_iocstate - Get the current state of a MPT adapter.
1925 * @ioc: Pointer to MPT_ADAPTER structure
1926 * @cooked: Request raw or cooked IOC state
1927 *
1928 * Returns all IOC Doorbell register bits if cooked==0, else just the
1929 * Doorbell bits in MPI_IOC_STATE_MASK.
1930 */
1931 u32
1932 mpt2sas_base_get_iocstate(struct MPT2SAS_ADAPTER *ioc, int cooked)
1933 {
1934 u32 s, sc;
1935
1936 s = readl(&ioc->chip->Doorbell);
1937 sc = s & MPI2_IOC_STATE_MASK;
1938 return cooked ? sc : s;
1939 }
1940
1941 /**
1942 * _base_wait_on_iocstate - waiting on a particular ioc state
1943 * @ioc_state: controller state { READY, OPERATIONAL, or RESET }
1944 * @timeout: timeout in second
1945 * @sleep_flag: CAN_SLEEP or NO_SLEEP
1946 *
1947 * Returns 0 for success, non-zero for failure.
1948 */
1949 static int
1950 _base_wait_on_iocstate(struct MPT2SAS_ADAPTER *ioc, u32 ioc_state, int timeout,
1951 int sleep_flag)
1952 {
1953 u32 count, cntdn;
1954 u32 current_state;
1955
1956 count = 0;
1957 cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
1958 do {
1959 current_state = mpt2sas_base_get_iocstate(ioc, 1);
1960 if (current_state == ioc_state)
1961 return 0;
1962 if (count && current_state == MPI2_IOC_STATE_FAULT)
1963 break;
1964 if (sleep_flag == CAN_SLEEP)
1965 msleep(1);
1966 else
1967 udelay(500);
1968 count++;
1969 } while (--cntdn);
1970
1971 return current_state;
1972 }
1973
1974 /**
1975 * _base_wait_for_doorbell_int - waiting for controller interrupt(generated by
1976 * a write to the doorbell)
1977 * @ioc: per adapter object
1978 * @timeout: timeout in second
1979 * @sleep_flag: CAN_SLEEP or NO_SLEEP
1980 *
1981 * Returns 0 for success, non-zero for failure.
1982 *
1983 * Notes: MPI2_HIS_IOC2SYS_DB_STATUS - set to one when IOC writes to doorbell.
1984 */
1985 static int
1986 _base_wait_for_doorbell_int(struct MPT2SAS_ADAPTER *ioc, int timeout,
1987 int sleep_flag)
1988 {
1989 u32 cntdn, count;
1990 u32 int_status;
1991
1992 count = 0;
1993 cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
1994 do {
1995 int_status = readl(&ioc->chip->HostInterruptStatus);
1996 if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
1997 dhsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
1998 "successfull count(%d), timeout(%d)\n", ioc->name,
1999 __func__, count, timeout));
2000 return 0;
2001 }
2002 if (sleep_flag == CAN_SLEEP)
2003 msleep(1);
2004 else
2005 udelay(500);
2006 count++;
2007 } while (--cntdn);
2008
2009 printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2010 "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2011 return -EFAULT;
2012 }
2013
2014 /**
2015 * _base_wait_for_doorbell_ack - waiting for controller to read the doorbell.
2016 * @ioc: per adapter object
2017 * @timeout: timeout in second
2018 * @sleep_flag: CAN_SLEEP or NO_SLEEP
2019 *
2020 * Returns 0 for success, non-zero for failure.
2021 *
2022 * Notes: MPI2_HIS_SYS2IOC_DB_STATUS - set to one when host writes to
2023 * doorbell.
2024 */
2025 static int
2026 _base_wait_for_doorbell_ack(struct MPT2SAS_ADAPTER *ioc, int timeout,
2027 int sleep_flag)
2028 {
2029 u32 cntdn, count;
2030 u32 int_status;
2031 u32 doorbell;
2032
2033 count = 0;
2034 cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2035 do {
2036 int_status = readl(&ioc->chip->HostInterruptStatus);
2037 if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) {
2038 dhsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
2039 "successfull count(%d), timeout(%d)\n", ioc->name,
2040 __func__, count, timeout));
2041 return 0;
2042 } else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2043 doorbell = readl(&ioc->chip->Doorbell);
2044 if ((doorbell & MPI2_IOC_STATE_MASK) ==
2045 MPI2_IOC_STATE_FAULT) {
2046 mpt2sas_base_fault_info(ioc , doorbell);
2047 return -EFAULT;
2048 }
2049 } else if (int_status == 0xFFFFFFFF)
2050 goto out;
2051
2052 if (sleep_flag == CAN_SLEEP)
2053 msleep(1);
2054 else
2055 udelay(500);
2056 count++;
2057 } while (--cntdn);
2058
2059 out:
2060 printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2061 "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2062 return -EFAULT;
2063 }
2064
2065 /**
2066 * _base_wait_for_doorbell_not_used - waiting for doorbell to not be in use
2067 * @ioc: per adapter object
2068 * @timeout: timeout in second
2069 * @sleep_flag: CAN_SLEEP or NO_SLEEP
2070 *
2071 * Returns 0 for success, non-zero for failure.
2072 *
2073 */
2074 static int
2075 _base_wait_for_doorbell_not_used(struct MPT2SAS_ADAPTER *ioc, int timeout,
2076 int sleep_flag)
2077 {
2078 u32 cntdn, count;
2079 u32 doorbell_reg;
2080
2081 count = 0;
2082 cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2083 do {
2084 doorbell_reg = readl(&ioc->chip->Doorbell);
2085 if (!(doorbell_reg & MPI2_DOORBELL_USED)) {
2086 dhsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
2087 "successfull count(%d), timeout(%d)\n", ioc->name,
2088 __func__, count, timeout));
2089 return 0;
2090 }
2091 if (sleep_flag == CAN_SLEEP)
2092 msleep(1);
2093 else
2094 udelay(500);
2095 count++;
2096 } while (--cntdn);
2097
2098 printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2099 "doorbell_reg(%x)!\n", ioc->name, __func__, count, doorbell_reg);
2100 return -EFAULT;
2101 }
2102
2103 /**
2104 * _base_send_ioc_reset - send doorbell reset
2105 * @ioc: per adapter object
2106 * @reset_type: currently only supports: MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET
2107 * @timeout: timeout in second
2108 * @sleep_flag: CAN_SLEEP or NO_SLEEP
2109 *
2110 * Returns 0 for success, non-zero for failure.
2111 */
2112 static int
2113 _base_send_ioc_reset(struct MPT2SAS_ADAPTER *ioc, u8 reset_type, int timeout,
2114 int sleep_flag)
2115 {
2116 u32 ioc_state;
2117 int r = 0;
2118
2119 if (reset_type != MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET) {
2120 printk(MPT2SAS_ERR_FMT "%s: unknown reset_type\n",
2121 ioc->name, __func__);
2122 return -EFAULT;
2123 }
2124
2125 if (!(ioc->facts.IOCCapabilities &
2126 MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY))
2127 return -EFAULT;
2128
2129 printk(MPT2SAS_INFO_FMT "sending message unit reset !!\n", ioc->name);
2130
2131 writel(reset_type << MPI2_DOORBELL_FUNCTION_SHIFT,
2132 &ioc->chip->Doorbell);
2133 if ((_base_wait_for_doorbell_ack(ioc, 15, sleep_flag))) {
2134 r = -EFAULT;
2135 goto out;
2136 }
2137 ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY,
2138 timeout, sleep_flag);
2139 if (ioc_state) {
2140 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
2141 " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
2142 r = -EFAULT;
2143 goto out;
2144 }
2145 out:
2146 printk(MPT2SAS_INFO_FMT "message unit reset: %s\n",
2147 ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
2148 return r;
2149 }
2150
2151 /**
2152 * _base_handshake_req_reply_wait - send request thru doorbell interface
2153 * @ioc: per adapter object
2154 * @request_bytes: request length
2155 * @request: pointer having request payload
2156 * @reply_bytes: reply length
2157 * @reply: pointer to reply payload
2158 * @timeout: timeout in second
2159 * @sleep_flag: CAN_SLEEP or NO_SLEEP
2160 *
2161 * Returns 0 for success, non-zero for failure.
2162 */
2163 static int
2164 _base_handshake_req_reply_wait(struct MPT2SAS_ADAPTER *ioc, int request_bytes,
2165 u32 *request, int reply_bytes, u16 *reply, int timeout, int sleep_flag)
2166 {
2167 MPI2DefaultReply_t *default_reply = (MPI2DefaultReply_t *)reply;
2168 int i;
2169 u8 failed;
2170 u16 dummy;
2171 u32 *mfp;
2172
2173 /* make sure doorbell is not in use */
2174 if ((readl(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) {
2175 printk(MPT2SAS_ERR_FMT "doorbell is in use "
2176 " (line=%d)\n", ioc->name, __LINE__);
2177 return -EFAULT;
2178 }
2179
2180 /* clear pending doorbell interrupts from previous state changes */
2181 if (readl(&ioc->chip->HostInterruptStatus) &
2182 MPI2_HIS_IOC2SYS_DB_STATUS)
2183 writel(0, &ioc->chip->HostInterruptStatus);
2184
2185 /* send message to ioc */
2186 writel(((MPI2_FUNCTION_HANDSHAKE<<MPI2_DOORBELL_FUNCTION_SHIFT) |
2187 ((request_bytes/4)<<MPI2_DOORBELL_ADD_DWORDS_SHIFT)),
2188 &ioc->chip->Doorbell);
2189
2190 if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
2191 printk(MPT2SAS_ERR_FMT "doorbell handshake "
2192 "int failed (line=%d)\n", ioc->name, __LINE__);
2193 return -EFAULT;
2194 }
2195 writel(0, &ioc->chip->HostInterruptStatus);
2196
2197 if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag))) {
2198 printk(MPT2SAS_ERR_FMT "doorbell handshake "
2199 "ack failed (line=%d)\n", ioc->name, __LINE__);
2200 return -EFAULT;
2201 }
2202
2203 /* send message 32-bits at a time */
2204 for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) {
2205 writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell);
2206 if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag)))
2207 failed = 1;
2208 }
2209
2210 if (failed) {
2211 printk(MPT2SAS_ERR_FMT "doorbell handshake "
2212 "sending request failed (line=%d)\n", ioc->name, __LINE__);
2213 return -EFAULT;
2214 }
2215
2216 /* now wait for the reply */
2217 if ((_base_wait_for_doorbell_int(ioc, timeout, sleep_flag))) {
2218 printk(MPT2SAS_ERR_FMT "doorbell handshake "
2219 "int failed (line=%d)\n", ioc->name, __LINE__);
2220 return -EFAULT;
2221 }
2222
2223 /* read the first two 16-bits, it gives the total length of the reply */
2224 reply[0] = le16_to_cpu(readl(&ioc->chip->Doorbell)
2225 & MPI2_DOORBELL_DATA_MASK);
2226 writel(0, &ioc->chip->HostInterruptStatus);
2227 if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
2228 printk(MPT2SAS_ERR_FMT "doorbell handshake "
2229 "int failed (line=%d)\n", ioc->name, __LINE__);
2230 return -EFAULT;
2231 }
2232 reply[1] = le16_to_cpu(readl(&ioc->chip->Doorbell)
2233 & MPI2_DOORBELL_DATA_MASK);
2234 writel(0, &ioc->chip->HostInterruptStatus);
2235
2236 for (i = 2; i < default_reply->MsgLength * 2; i++) {
2237 if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
2238 printk(MPT2SAS_ERR_FMT "doorbell "
2239 "handshake int failed (line=%d)\n", ioc->name,
2240 __LINE__);
2241 return -EFAULT;
2242 }
2243 if (i >= reply_bytes/2) /* overflow case */
2244 dummy = readl(&ioc->chip->Doorbell);
2245 else
2246 reply[i] = le16_to_cpu(readl(&ioc->chip->Doorbell)
2247 & MPI2_DOORBELL_DATA_MASK);
2248 writel(0, &ioc->chip->HostInterruptStatus);
2249 }
2250
2251 _base_wait_for_doorbell_int(ioc, 5, sleep_flag);
2252 if (_base_wait_for_doorbell_not_used(ioc, 5, sleep_flag) != 0) {
2253 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "doorbell is in use "
2254 " (line=%d)\n", ioc->name, __LINE__));
2255 }
2256 writel(0, &ioc->chip->HostInterruptStatus);
2257
2258 if (ioc->logging_level & MPT_DEBUG_INIT) {
2259 mfp = (u32 *)reply;
2260 printk(KERN_DEBUG "\toffset:data\n");
2261 for (i = 0; i < reply_bytes/4; i++)
2262 printk(KERN_DEBUG "\t[0x%02x]:%08x\n", i*4,
2263 le32_to_cpu(mfp[i]));
2264 }
2265 return 0;
2266 }
2267
2268 /**
2269 * mpt2sas_base_sas_iounit_control - send sas iounit control to FW
2270 * @ioc: per adapter object
2271 * @mpi_reply: the reply payload from FW
2272 * @mpi_request: the request payload sent to FW
2273 *
2274 * The SAS IO Unit Control Request message allows the host to perform low-level
2275 * operations, such as resets on the PHYs of the IO Unit, also allows the host
2276 * to obtain the IOC assigned device handles for a device if it has other
2277 * identifying information about the device, in addition allows the host to
2278 * remove IOC resources associated with the device.
2279 *
2280 * Returns 0 for success, non-zero for failure.
2281 */
2282 int
2283 mpt2sas_base_sas_iounit_control(struct MPT2SAS_ADAPTER *ioc,
2284 Mpi2SasIoUnitControlReply_t *mpi_reply,
2285 Mpi2SasIoUnitControlRequest_t *mpi_request)
2286 {
2287 u16 smid;
2288 u32 ioc_state;
2289 unsigned long timeleft;
2290 u8 issue_reset;
2291 int rc;
2292 void *request;
2293 u16 wait_state_count;
2294
2295 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
2296 __func__));
2297
2298 mutex_lock(&ioc->base_cmds.mutex);
2299
2300 if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
2301 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
2302 ioc->name, __func__);
2303 rc = -EAGAIN;
2304 goto out;
2305 }
2306
2307 wait_state_count = 0;
2308 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
2309 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
2310 if (wait_state_count++ == 10) {
2311 printk(MPT2SAS_ERR_FMT
2312 "%s: failed due to ioc not operational\n",
2313 ioc->name, __func__);
2314 rc = -EFAULT;
2315 goto out;
2316 }
2317 ssleep(1);
2318 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
2319 printk(MPT2SAS_INFO_FMT "%s: waiting for "
2320 "operational state(count=%d)\n", ioc->name,
2321 __func__, wait_state_count);
2322 }
2323
2324 smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
2325 if (!smid) {
2326 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2327 ioc->name, __func__);
2328 rc = -EAGAIN;
2329 goto out;
2330 }
2331
2332 rc = 0;
2333 ioc->base_cmds.status = MPT2_CMD_PENDING;
2334 request = mpt2sas_base_get_msg_frame(ioc, smid);
2335 ioc->base_cmds.smid = smid;
2336 memcpy(request, mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t));
2337 if (mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
2338 mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET)
2339 ioc->ioc_link_reset_in_progress = 1;
2340 mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
2341 timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
2342 msecs_to_jiffies(10000));
2343 if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
2344 mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) &&
2345 ioc->ioc_link_reset_in_progress)
2346 ioc->ioc_link_reset_in_progress = 0;
2347 if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
2348 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
2349 ioc->name, __func__);
2350 _debug_dump_mf(mpi_request,
2351 sizeof(Mpi2SasIoUnitControlRequest_t)/4);
2352 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
2353 issue_reset = 1;
2354 goto issue_host_reset;
2355 }
2356 if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
2357 memcpy(mpi_reply, ioc->base_cmds.reply,
2358 sizeof(Mpi2SasIoUnitControlReply_t));
2359 else
2360 memset(mpi_reply, 0, sizeof(Mpi2SasIoUnitControlReply_t));
2361 ioc->base_cmds.status = MPT2_CMD_NOT_USED;
2362 goto out;
2363
2364 issue_host_reset:
2365 if (issue_reset)
2366 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2367 FORCE_BIG_HAMMER);
2368 ioc->base_cmds.status = MPT2_CMD_NOT_USED;
2369 rc = -EFAULT;
2370 out:
2371 mutex_unlock(&ioc->base_cmds.mutex);
2372 return rc;
2373 }
2374
2375
2376 /**
2377 * mpt2sas_base_scsi_enclosure_processor - sending request to sep device
2378 * @ioc: per adapter object
2379 * @mpi_reply: the reply payload from FW
2380 * @mpi_request: the request payload sent to FW
2381 *
2382 * The SCSI Enclosure Processor request message causes the IOC to
2383 * communicate with SES devices to control LED status signals.
2384 *
2385 * Returns 0 for success, non-zero for failure.
2386 */
2387 int
2388 mpt2sas_base_scsi_enclosure_processor(struct MPT2SAS_ADAPTER *ioc,
2389 Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request)
2390 {
2391 u16 smid;
2392 u32 ioc_state;
2393 unsigned long timeleft;
2394 u8 issue_reset;
2395 int rc;
2396 void *request;
2397 u16 wait_state_count;
2398
2399 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
2400 __func__));
2401
2402 mutex_lock(&ioc->base_cmds.mutex);
2403
2404 if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
2405 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
2406 ioc->name, __func__);
2407 rc = -EAGAIN;
2408 goto out;
2409 }
2410
2411 wait_state_count = 0;
2412 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
2413 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
2414 if (wait_state_count++ == 10) {
2415 printk(MPT2SAS_ERR_FMT
2416 "%s: failed due to ioc not operational\n",
2417 ioc->name, __func__);
2418 rc = -EFAULT;
2419 goto out;
2420 }
2421 ssleep(1);
2422 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
2423 printk(MPT2SAS_INFO_FMT "%s: waiting for "
2424 "operational state(count=%d)\n", ioc->name,
2425 __func__, wait_state_count);
2426 }
2427
2428 smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
2429 if (!smid) {
2430 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2431 ioc->name, __func__);
2432 rc = -EAGAIN;
2433 goto out;
2434 }
2435
2436 rc = 0;
2437 ioc->base_cmds.status = MPT2_CMD_PENDING;
2438 request = mpt2sas_base_get_msg_frame(ioc, smid);
2439 ioc->base_cmds.smid = smid;
2440 memcpy(request, mpi_request, sizeof(Mpi2SepReply_t));
2441 mpt2sas_base_put_smid_default(ioc, smid, mpi_request->VF_ID);
2442 timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
2443 msecs_to_jiffies(10000));
2444 if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
2445 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
2446 ioc->name, __func__);
2447 _debug_dump_mf(mpi_request,
2448 sizeof(Mpi2SepRequest_t)/4);
2449 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
2450 issue_reset = 1;
2451 goto issue_host_reset;
2452 }
2453 if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
2454 memcpy(mpi_reply, ioc->base_cmds.reply,
2455 sizeof(Mpi2SepReply_t));
2456 else
2457 memset(mpi_reply, 0, sizeof(Mpi2SepReply_t));
2458 ioc->base_cmds.status = MPT2_CMD_NOT_USED;
2459 goto out;
2460
2461 issue_host_reset:
2462 if (issue_reset)
2463 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2464 FORCE_BIG_HAMMER);
2465 ioc->base_cmds.status = MPT2_CMD_NOT_USED;
2466 rc = -EFAULT;
2467 out:
2468 mutex_unlock(&ioc->base_cmds.mutex);
2469 return rc;
2470 }
2471
2472 /**
2473 * _base_get_port_facts - obtain port facts reply and save in ioc
2474 * @ioc: per adapter object
2475 * @sleep_flag: CAN_SLEEP or NO_SLEEP
2476 *
2477 * Returns 0 for success, non-zero for failure.
2478 */
2479 static int
2480 _base_get_port_facts(struct MPT2SAS_ADAPTER *ioc, int port, int sleep_flag)
2481 {
2482 Mpi2PortFactsRequest_t mpi_request;
2483 Mpi2PortFactsReply_t mpi_reply, *pfacts;
2484 int mpi_reply_sz, mpi_request_sz, r;
2485
2486 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
2487 __func__));
2488
2489 mpi_reply_sz = sizeof(Mpi2PortFactsReply_t);
2490 mpi_request_sz = sizeof(Mpi2PortFactsRequest_t);
2491 memset(&mpi_request, 0, mpi_request_sz);
2492 mpi_request.Function = MPI2_FUNCTION_PORT_FACTS;
2493 mpi_request.PortNumber = port;
2494 r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
2495 (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
2496
2497 if (r != 0) {
2498 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
2499 ioc->name, __func__, r);
2500 return r;
2501 }
2502
2503 pfacts = &ioc->pfacts[port];
2504 memset(pfacts, 0, sizeof(Mpi2PortFactsReply_t));
2505 pfacts->PortNumber = mpi_reply.PortNumber;
2506 pfacts->VP_ID = mpi_reply.VP_ID;
2507 pfacts->VF_ID = mpi_reply.VF_ID;
2508 pfacts->MaxPostedCmdBuffers =
2509 le16_to_cpu(mpi_reply.MaxPostedCmdBuffers);
2510
2511 return 0;
2512 }
2513
2514 /**
2515 * _base_get_ioc_facts - obtain ioc facts reply and save in ioc
2516 * @ioc: per adapter object
2517 * @sleep_flag: CAN_SLEEP or NO_SLEEP
2518 *
2519 * Returns 0 for success, non-zero for failure.
2520 */
2521 static int
2522 _base_get_ioc_facts(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
2523 {
2524 Mpi2IOCFactsRequest_t mpi_request;
2525 Mpi2IOCFactsReply_t mpi_reply, *facts;
2526 int mpi_reply_sz, mpi_request_sz, r;
2527
2528 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
2529 __func__));
2530
2531 mpi_reply_sz = sizeof(Mpi2IOCFactsReply_t);
2532 mpi_request_sz = sizeof(Mpi2IOCFactsRequest_t);
2533 memset(&mpi_request, 0, mpi_request_sz);
2534 mpi_request.Function = MPI2_FUNCTION_IOC_FACTS;
2535 r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
2536 (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
2537
2538 if (r != 0) {
2539 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
2540 ioc->name, __func__, r);
2541 return r;
2542 }
2543
2544 facts = &ioc->facts;
2545 memset(facts, 0, sizeof(Mpi2IOCFactsReply_t));
2546 facts->MsgVersion = le16_to_cpu(mpi_reply.MsgVersion);
2547 facts->HeaderVersion = le16_to_cpu(mpi_reply.HeaderVersion);
2548 facts->VP_ID = mpi_reply.VP_ID;
2549 facts->VF_ID = mpi_reply.VF_ID;
2550 facts->IOCExceptions = le16_to_cpu(mpi_reply.IOCExceptions);
2551 facts->MaxChainDepth = mpi_reply.MaxChainDepth;
2552 facts->WhoInit = mpi_reply.WhoInit;
2553 facts->NumberOfPorts = mpi_reply.NumberOfPorts;
2554 facts->RequestCredit = le16_to_cpu(mpi_reply.RequestCredit);
2555 facts->MaxReplyDescriptorPostQueueDepth =
2556 le16_to_cpu(mpi_reply.MaxReplyDescriptorPostQueueDepth);
2557 facts->ProductID = le16_to_cpu(mpi_reply.ProductID);
2558 facts->IOCCapabilities = le32_to_cpu(mpi_reply.IOCCapabilities);
2559 if ((facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID))
2560 ioc->ir_firmware = 1;
2561 facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word);
2562 facts->IOCRequestFrameSize =
2563 le16_to_cpu(mpi_reply.IOCRequestFrameSize);
2564 facts->MaxInitiators = le16_to_cpu(mpi_reply.MaxInitiators);
2565 facts->MaxTargets = le16_to_cpu(mpi_reply.MaxTargets);
2566 ioc->shost->max_id = -1;
2567 facts->MaxSasExpanders = le16_to_cpu(mpi_reply.MaxSasExpanders);
2568 facts->MaxEnclosures = le16_to_cpu(mpi_reply.MaxEnclosures);
2569 facts->ProtocolFlags = le16_to_cpu(mpi_reply.ProtocolFlags);
2570 facts->HighPriorityCredit =
2571 le16_to_cpu(mpi_reply.HighPriorityCredit);
2572 facts->ReplyFrameSize = mpi_reply.ReplyFrameSize;
2573 facts->MaxDevHandle = le16_to_cpu(mpi_reply.MaxDevHandle);
2574
2575 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hba queue depth(%d), "
2576 "max chains per io(%d)\n", ioc->name, facts->RequestCredit,
2577 facts->MaxChainDepth));
2578 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request frame size(%d), "
2579 "reply frame size(%d)\n", ioc->name,
2580 facts->IOCRequestFrameSize * 4, facts->ReplyFrameSize * 4));
2581 return 0;
2582 }
2583
2584 /**
2585 * _base_send_ioc_init - send ioc_init to firmware
2586 * @ioc: per adapter object
2587 * @VF_ID: virtual function id
2588 * @sleep_flag: CAN_SLEEP or NO_SLEEP
2589 *
2590 * Returns 0 for success, non-zero for failure.
2591 */
2592 static int
2593 _base_send_ioc_init(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID, int sleep_flag)
2594 {
2595 Mpi2IOCInitRequest_t mpi_request;
2596 Mpi2IOCInitReply_t mpi_reply;
2597 int r;
2598
2599 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
2600 __func__));
2601
2602 memset(&mpi_request, 0, sizeof(Mpi2IOCInitRequest_t));
2603 mpi_request.Function = MPI2_FUNCTION_IOC_INIT;
2604 mpi_request.WhoInit = MPI2_WHOINIT_HOST_DRIVER;
2605 mpi_request.VF_ID = VF_ID;
2606 mpi_request.MsgVersion = cpu_to_le16(MPI2_VERSION);
2607 mpi_request.HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
2608
2609 /* In MPI Revision I (0xA), the SystemReplyFrameSize(offset 0x18) was
2610 * removed and made reserved. For those with older firmware will need
2611 * this fix. It was decided that the Reply and Request frame sizes are
2612 * the same.
2613 */
2614 if ((ioc->facts.HeaderVersion >> 8) < 0xA) {
2615 mpi_request.Reserved7 = cpu_to_le16(ioc->reply_sz);
2616 /* mpi_request.SystemReplyFrameSize =
2617 * cpu_to_le16(ioc->reply_sz);
2618 */
2619 }
2620
2621 mpi_request.SystemRequestFrameSize = cpu_to_le16(ioc->request_sz/4);
2622 mpi_request.ReplyDescriptorPostQueueDepth =
2623 cpu_to_le16(ioc->reply_post_queue_depth);
2624 mpi_request.ReplyFreeQueueDepth =
2625 cpu_to_le16(ioc->reply_free_queue_depth);
2626
2627 #if BITS_PER_LONG > 32
2628 mpi_request.SenseBufferAddressHigh =
2629 cpu_to_le32(ioc->sense_dma >> 32);
2630 mpi_request.SystemReplyAddressHigh =
2631 cpu_to_le32(ioc->reply_dma >> 32);
2632 mpi_request.SystemRequestFrameBaseAddress =
2633 cpu_to_le64(ioc->request_dma);
2634 mpi_request.ReplyFreeQueueAddress =
2635 cpu_to_le64(ioc->reply_free_dma);
2636 mpi_request.ReplyDescriptorPostQueueAddress =
2637 cpu_to_le64(ioc->reply_post_free_dma);
2638 #else
2639 mpi_request.SystemRequestFrameBaseAddress =
2640 cpu_to_le32(ioc->request_dma);
2641 mpi_request.ReplyFreeQueueAddress =
2642 cpu_to_le32(ioc->reply_free_dma);
2643 mpi_request.ReplyDescriptorPostQueueAddress =
2644 cpu_to_le32(ioc->reply_post_free_dma);
2645 #endif
2646
2647 if (ioc->logging_level & MPT_DEBUG_INIT) {
2648 u32 *mfp;
2649 int i;
2650
2651 mfp = (u32 *)&mpi_request;
2652 printk(KERN_DEBUG "\toffset:data\n");
2653 for (i = 0; i < sizeof(Mpi2IOCInitRequest_t)/4; i++)
2654 printk(KERN_DEBUG "\t[0x%02x]:%08x\n", i*4,
2655 le32_to_cpu(mfp[i]));
2656 }
2657
2658 r = _base_handshake_req_reply_wait(ioc,
2659 sizeof(Mpi2IOCInitRequest_t), (u32 *)&mpi_request,
2660 sizeof(Mpi2IOCInitReply_t), (u16 *)&mpi_reply, 10,
2661 sleep_flag);
2662
2663 if (r != 0) {
2664 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
2665 ioc->name, __func__, r);
2666 return r;
2667 }
2668
2669 if (mpi_reply.IOCStatus != MPI2_IOCSTATUS_SUCCESS ||
2670 mpi_reply.IOCLogInfo) {
2671 printk(MPT2SAS_ERR_FMT "%s: failed\n", ioc->name, __func__);
2672 r = -EIO;
2673 }
2674
2675 return 0;
2676 }
2677
2678 /**
2679 * _base_send_port_enable - send port_enable(discovery stuff) to firmware
2680 * @ioc: per adapter object
2681 * @VF_ID: virtual function id
2682 * @sleep_flag: CAN_SLEEP or NO_SLEEP
2683 *
2684 * Returns 0 for success, non-zero for failure.
2685 */
2686 static int
2687 _base_send_port_enable(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID, int sleep_flag)
2688 {
2689 Mpi2PortEnableRequest_t *mpi_request;
2690 u32 ioc_state;
2691 unsigned long timeleft;
2692 int r = 0;
2693 u16 smid;
2694
2695 printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
2696
2697 if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
2698 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
2699 ioc->name, __func__);
2700 return -EAGAIN;
2701 }
2702
2703 smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
2704 if (!smid) {
2705 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2706 ioc->name, __func__);
2707 return -EAGAIN;
2708 }
2709
2710 ioc->base_cmds.status = MPT2_CMD_PENDING;
2711 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
2712 ioc->base_cmds.smid = smid;
2713 memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
2714 mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
2715 mpi_request->VF_ID = VF_ID;
2716
2717 mpt2sas_base_put_smid_default(ioc, smid, VF_ID);
2718 timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
2719 300*HZ);
2720 if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
2721 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
2722 ioc->name, __func__);
2723 _debug_dump_mf(mpi_request,
2724 sizeof(Mpi2PortEnableRequest_t)/4);
2725 if (ioc->base_cmds.status & MPT2_CMD_RESET)
2726 r = -EFAULT;
2727 else
2728 r = -ETIME;
2729 goto out;
2730 } else
2731 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: complete\n",
2732 ioc->name, __func__));
2733
2734 ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_OPERATIONAL,
2735 60, sleep_flag);
2736 if (ioc_state) {
2737 printk(MPT2SAS_ERR_FMT "%s: failed going to operational state "
2738 " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
2739 r = -EFAULT;
2740 }
2741 out:
2742 ioc->base_cmds.status = MPT2_CMD_NOT_USED;
2743 printk(MPT2SAS_INFO_FMT "port enable: %s\n",
2744 ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
2745 return r;
2746 }
2747
2748 /**
2749 * _base_unmask_events - turn on notification for this event
2750 * @ioc: per adapter object
2751 * @event: firmware event
2752 *
2753 * The mask is stored in ioc->event_masks.
2754 */
2755 static void
2756 _base_unmask_events(struct MPT2SAS_ADAPTER *ioc, u16 event)
2757 {
2758 u32 desired_event;
2759
2760 if (event >= 128)
2761 return;
2762
2763 desired_event = (1 << (event % 32));
2764
2765 if (event < 32)
2766 ioc->event_masks[0] &= ~desired_event;
2767 else if (event < 64)
2768 ioc->event_masks[1] &= ~desired_event;
2769 else if (event < 96)
2770 ioc->event_masks[2] &= ~desired_event;
2771 else if (event < 128)
2772 ioc->event_masks[3] &= ~desired_event;
2773 }
2774
2775 /**
2776 * _base_event_notification - send event notification
2777 * @ioc: per adapter object
2778 * @VF_ID: virtual function id
2779 * @sleep_flag: CAN_SLEEP or NO_SLEEP
2780 *
2781 * Returns 0 for success, non-zero for failure.
2782 */
2783 static int
2784 _base_event_notification(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID, int sleep_flag)
2785 {
2786 Mpi2EventNotificationRequest_t *mpi_request;
2787 unsigned long timeleft;
2788 u16 smid;
2789 int r = 0;
2790 int i;
2791
2792 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
2793 __func__));
2794
2795 if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
2796 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
2797 ioc->name, __func__);
2798 return -EAGAIN;
2799 }
2800
2801 smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
2802 if (!smid) {
2803 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2804 ioc->name, __func__);
2805 return -EAGAIN;
2806 }
2807 ioc->base_cmds.status = MPT2_CMD_PENDING;
2808 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
2809 ioc->base_cmds.smid = smid;
2810 memset(mpi_request, 0, sizeof(Mpi2EventNotificationRequest_t));
2811 mpi_request->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
2812 mpi_request->VF_ID = VF_ID;
2813 for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
2814 mpi_request->EventMasks[i] =
2815 le32_to_cpu(ioc->event_masks[i]);
2816 mpt2sas_base_put_smid_default(ioc, smid, VF_ID);
2817 timeleft = wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ);
2818 if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
2819 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
2820 ioc->name, __func__);
2821 _debug_dump_mf(mpi_request,
2822 sizeof(Mpi2EventNotificationRequest_t)/4);
2823 if (ioc->base_cmds.status & MPT2_CMD_RESET)
2824 r = -EFAULT;
2825 else
2826 r = -ETIME;
2827 } else
2828 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: complete\n",
2829 ioc->name, __func__));
2830 ioc->base_cmds.status = MPT2_CMD_NOT_USED;
2831 return r;
2832 }
2833
2834 /**
2835 * mpt2sas_base_validate_event_type - validating event types
2836 * @ioc: per adapter object
2837 * @event: firmware event
2838 *
2839 * This will turn on firmware event notification when application
2840 * ask for that event. We don't mask events that are already enabled.
2841 */
2842 void
2843 mpt2sas_base_validate_event_type(struct MPT2SAS_ADAPTER *ioc, u32 *event_type)
2844 {
2845 int i, j;
2846 u32 event_mask, desired_event;
2847 u8 send_update_to_fw;
2848
2849 for (i = 0, send_update_to_fw = 0; i <
2850 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) {
2851 event_mask = ~event_type[i];
2852 desired_event = 1;
2853 for (j = 0; j < 32; j++) {
2854 if (!(event_mask & desired_event) &&
2855 (ioc->event_masks[i] & desired_event)) {
2856 ioc->event_masks[i] &= ~desired_event;
2857 send_update_to_fw = 1;
2858 }
2859 desired_event = (desired_event << 1);
2860 }
2861 }
2862
2863 if (!send_update_to_fw)
2864 return;
2865
2866 mutex_lock(&ioc->base_cmds.mutex);
2867 _base_event_notification(ioc, 0, CAN_SLEEP);
2868 mutex_unlock(&ioc->base_cmds.mutex);
2869 }
2870
2871 /**
2872 * _base_diag_reset - the "big hammer" start of day reset
2873 * @ioc: per adapter object
2874 * @sleep_flag: CAN_SLEEP or NO_SLEEP
2875 *
2876 * Returns 0 for success, non-zero for failure.
2877 */
2878 static int
2879 _base_diag_reset(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
2880 {
2881 u32 host_diagnostic;
2882 u32 ioc_state;
2883 u32 count;
2884 u32 hcb_size;
2885
2886 printk(MPT2SAS_INFO_FMT "sending diag reset !!\n", ioc->name);
2887
2888 _base_save_msix_table(ioc);
2889
2890 drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "clear interrupts\n",
2891 ioc->name));
2892 writel(0, &ioc->chip->HostInterruptStatus);
2893
2894 count = 0;
2895 do {
2896 /* Write magic sequence to WriteSequence register
2897 * Loop until in diagnostic mode
2898 */
2899 drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "write magic "
2900 "sequence\n", ioc->name));
2901 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
2902 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &ioc->chip->WriteSequence);
2903 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &ioc->chip->WriteSequence);
2904 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &ioc->chip->WriteSequence);
2905 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &ioc->chip->WriteSequence);
2906 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &ioc->chip->WriteSequence);
2907 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &ioc->chip->WriteSequence);
2908
2909 /* wait 100 msec */
2910 if (sleep_flag == CAN_SLEEP)
2911 msleep(100);
2912 else
2913 mdelay(100);
2914
2915 if (count++ > 20)
2916 goto out;
2917
2918 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
2919 drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "wrote magic "
2920 "sequence: count(%d), host_diagnostic(0x%08x)\n",
2921 ioc->name, count, host_diagnostic));
2922
2923 } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
2924
2925 hcb_size = readl(&ioc->chip->HCBSize);
2926
2927 drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "diag reset: issued\n",
2928 ioc->name));
2929 writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
2930 &ioc->chip->HostDiagnostic);
2931
2932 /* don't access any registers for 50 milliseconds */
2933 msleep(50);
2934
2935 /* 300 second max wait */
2936 for (count = 0; count < 3000000 ; count++) {
2937
2938 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
2939
2940 if (host_diagnostic == 0xFFFFFFFF)
2941 goto out;
2942 if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
2943 break;
2944
2945 /* wait 100 msec */
2946 if (sleep_flag == CAN_SLEEP)
2947 msleep(1);
2948 else
2949 mdelay(1);
2950 }
2951
2952 if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
2953
2954 drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "restart the adapter "
2955 "assuming the HCB Address points to good F/W\n",
2956 ioc->name));
2957 host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
2958 host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
2959 writel(host_diagnostic, &ioc->chip->HostDiagnostic);
2960
2961 drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT
2962 "re-enable the HCDW\n", ioc->name));
2963 writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE,
2964 &ioc->chip->HCBSize);
2965 }
2966
2967 drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "restart the adapter\n",
2968 ioc->name));
2969 writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
2970 &ioc->chip->HostDiagnostic);
2971
2972 drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "disable writes to the "
2973 "diagnostic register\n", ioc->name));
2974 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
2975
2976 drsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "Wait for FW to go to the "
2977 "READY state\n", ioc->name));
2978 ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20,
2979 sleep_flag);
2980 if (ioc_state) {
2981 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
2982 " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
2983 goto out;
2984 }
2985
2986 _base_restore_msix_table(ioc);
2987 printk(MPT2SAS_INFO_FMT "diag reset: SUCCESS\n", ioc->name);
2988 return 0;
2989
2990 out:
2991 printk(MPT2SAS_ERR_FMT "diag reset: FAILED\n", ioc->name);
2992 return -EFAULT;
2993 }
2994
2995 /**
2996 * _base_make_ioc_ready - put controller in READY state
2997 * @ioc: per adapter object
2998 * @sleep_flag: CAN_SLEEP or NO_SLEEP
2999 * @type: FORCE_BIG_HAMMER or SOFT_RESET
3000 *
3001 * Returns 0 for success, non-zero for failure.
3002 */
3003 static int
3004 _base_make_ioc_ready(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
3005 enum reset_type type)
3006 {
3007 u32 ioc_state;
3008
3009 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
3010 __func__));
3011
3012 ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
3013 dhsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: ioc_state(0x%08x)\n",
3014 ioc->name, __func__, ioc_state));
3015
3016 if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY)
3017 return 0;
3018
3019 if (ioc_state & MPI2_DOORBELL_USED) {
3020 dhsprintk(ioc, printk(MPT2SAS_DEBUG_FMT "unexpected doorbell "
3021 "active!\n", ioc->name));
3022 goto issue_diag_reset;
3023 }
3024
3025 if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
3026 mpt2sas_base_fault_info(ioc, ioc_state &
3027 MPI2_DOORBELL_DATA_MASK);
3028 goto issue_diag_reset;
3029 }
3030
3031 if (type == FORCE_BIG_HAMMER)
3032 goto issue_diag_reset;
3033
3034 if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)
3035 if (!(_base_send_ioc_reset(ioc,
3036 MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15, CAN_SLEEP)))
3037 return 0;
3038
3039 issue_diag_reset:
3040 return _base_diag_reset(ioc, CAN_SLEEP);
3041 }
3042
3043 /**
3044 * _base_make_ioc_operational - put controller in OPERATIONAL state
3045 * @ioc: per adapter object
3046 * @VF_ID: virtual function id
3047 * @sleep_flag: CAN_SLEEP or NO_SLEEP
3048 *
3049 * Returns 0 for success, non-zero for failure.
3050 */
3051 static int
3052 _base_make_ioc_operational(struct MPT2SAS_ADAPTER *ioc, u8 VF_ID,
3053 int sleep_flag)
3054 {
3055 int r, i;
3056 unsigned long flags;
3057 u32 reply_address;
3058
3059 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
3060 __func__));
3061
3062 /* initialize the scsi lookup free list */
3063 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3064 INIT_LIST_HEAD(&ioc->free_list);
3065 for (i = 0; i < ioc->request_depth; i++) {
3066 ioc->scsi_lookup[i].cb_idx = 0xFF;
3067 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
3068 &ioc->free_list);
3069 }
3070 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3071
3072 /* initialize Reply Free Queue */
3073 for (i = 0, reply_address = (u32)ioc->reply_dma ;
3074 i < ioc->reply_free_queue_depth ; i++, reply_address +=
3075 ioc->reply_sz)
3076 ioc->reply_free[i] = cpu_to_le32(reply_address);
3077
3078 /* initialize Reply Post Free Queue */
3079 for (i = 0; i < ioc->reply_post_queue_depth; i++)
3080 ioc->reply_post_free[i].Words = ULLONG_MAX;
3081
3082 r = _base_send_ioc_init(ioc, VF_ID, sleep_flag);
3083 if (r)
3084 return r;
3085
3086 /* initialize the index's */
3087 ioc->reply_free_host_index = ioc->reply_free_queue_depth - 1;
3088 ioc->reply_post_host_index = 0;
3089 writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex);
3090 writel(0, &ioc->chip->ReplyPostHostIndex);
3091
3092 _base_unmask_interrupts(ioc);
3093 r = _base_event_notification(ioc, VF_ID, sleep_flag);
3094 if (r)
3095 return r;
3096
3097 if (sleep_flag == CAN_SLEEP)
3098 _base_static_config_pages(ioc);
3099
3100 r = _base_send_port_enable(ioc, VF_ID, sleep_flag);
3101 if (r)
3102 return r;
3103
3104 return r;
3105 }
3106
3107 /**
3108 * mpt2sas_base_free_resources - free resources controller resources (io/irq/memap)
3109 * @ioc: per adapter object
3110 *
3111 * Return nothing.
3112 */
3113 void
3114 mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc)
3115 {
3116 struct pci_dev *pdev = ioc->pdev;
3117
3118 dexitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
3119 __func__));
3120
3121 _base_mask_interrupts(ioc);
3122 _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
3123 if (ioc->pci_irq) {
3124 synchronize_irq(pdev->irq);
3125 free_irq(ioc->pci_irq, ioc);
3126 }
3127 _base_disable_msix(ioc);
3128 if (ioc->chip_phys)
3129 iounmap(ioc->chip);
3130 ioc->pci_irq = -1;
3131 ioc->chip_phys = 0;
3132 pci_release_selected_regions(ioc->pdev, ioc->bars);
3133 pci_disable_device(pdev);
3134 pci_set_drvdata(pdev, NULL);
3135 return;
3136 }
3137
3138 /**
3139 * mpt2sas_base_attach - attach controller instance
3140 * @ioc: per adapter object
3141 *
3142 * Returns 0 for success, non-zero for failure.
3143 */
3144 int
3145 mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
3146 {
3147 int r, i;
3148 unsigned long flags;
3149
3150 dinitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
3151 __func__));
3152
3153 r = mpt2sas_base_map_resources(ioc);
3154 if (r)
3155 return r;
3156
3157 r = _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
3158 if (r)
3159 goto out_free_resources;
3160
3161 r = _base_get_ioc_facts(ioc, CAN_SLEEP);
3162 if (r)
3163 goto out_free_resources;
3164
3165 r = _base_allocate_memory_pools(ioc, CAN_SLEEP);
3166 if (r)
3167 goto out_free_resources;
3168
3169 init_waitqueue_head(&ioc->reset_wq);
3170
3171 /* base internal command bits */
3172 mutex_init(&ioc->base_cmds.mutex);
3173 init_completion(&ioc->base_cmds.done);
3174 ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
3175 ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3176
3177 /* transport internal command bits */
3178 ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
3179 ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
3180 mutex_init(&ioc->transport_cmds.mutex);
3181 init_completion(&ioc->transport_cmds.done);
3182
3183 /* task management internal command bits */
3184 ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
3185 ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
3186 mutex_init(&ioc->tm_cmds.mutex);
3187 init_completion(&ioc->tm_cmds.done);
3188
3189 /* config page internal command bits */
3190 ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
3191 ioc->config_cmds.status = MPT2_CMD_NOT_USED;
3192 mutex_init(&ioc->config_cmds.mutex);
3193 init_completion(&ioc->config_cmds.done);
3194
3195 /* ctl module internal command bits */
3196 ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
3197 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
3198 mutex_init(&ioc->ctl_cmds.mutex);
3199 init_completion(&ioc->ctl_cmds.done);
3200
3201 for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
3202 ioc->event_masks[i] = -1;
3203
3204 /* here we enable the events we care about */
3205 _base_unmask_events(ioc, MPI2_EVENT_SAS_DISCOVERY);
3206 _base_unmask_events(ioc, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE);
3207 _base_unmask_events(ioc, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST);
3208 _base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
3209 _base_unmask_events(ioc, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE);
3210 _base_unmask_events(ioc, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST);
3211 _base_unmask_events(ioc, MPI2_EVENT_IR_VOLUME);
3212 _base_unmask_events(ioc, MPI2_EVENT_IR_PHYSICAL_DISK);
3213 _base_unmask_events(ioc, MPI2_EVENT_IR_OPERATION_STATUS);
3214 _base_unmask_events(ioc, MPI2_EVENT_TASK_SET_FULL);
3215 _base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED);
3216
3217 ioc->pfacts = kcalloc(ioc->facts.NumberOfPorts,
3218 sizeof(Mpi2PortFactsReply_t), GFP_KERNEL);
3219 if (!ioc->pfacts)
3220 goto out_free_resources;
3221
3222 for (i = 0 ; i < ioc->facts.NumberOfPorts; i++) {
3223 r = _base_get_port_facts(ioc, i, CAN_SLEEP);
3224 if (r)
3225 goto out_free_resources;
3226 }
3227 r = _base_make_ioc_operational(ioc, 0, CAN_SLEEP);
3228 if (r)
3229 goto out_free_resources;
3230
3231 /* initialize fault polling */
3232 INIT_DELAYED_WORK(&ioc->fault_reset_work, _base_fault_reset_work);
3233 snprintf(ioc->fault_reset_work_q_name,
3234 sizeof(ioc->fault_reset_work_q_name), "poll_%d_status", ioc->id);
3235 ioc->fault_reset_work_q =
3236 create_singlethread_workqueue(ioc->fault_reset_work_q_name);
3237 if (!ioc->fault_reset_work_q) {
3238 printk(MPT2SAS_ERR_FMT "%s: failed (line=%d)\n",
3239 ioc->name, __func__, __LINE__);
3240 goto out_free_resources;
3241 }
3242 spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
3243 if (ioc->fault_reset_work_q)
3244 queue_delayed_work(ioc->fault_reset_work_q,
3245 &ioc->fault_reset_work,
3246 msecs_to_jiffies(FAULT_POLLING_INTERVAL));
3247 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
3248 return 0;
3249
3250 out_free_resources:
3251
3252 ioc->remove_host = 1;
3253 mpt2sas_base_free_resources(ioc);
3254 _base_release_memory_pools(ioc);
3255 kfree(ioc->tm_cmds.reply);
3256 kfree(ioc->transport_cmds.reply);
3257 kfree(ioc->config_cmds.reply);
3258 kfree(ioc->base_cmds.reply);
3259 kfree(ioc->ctl_cmds.reply);
3260 kfree(ioc->pfacts);
3261 ioc->ctl_cmds.reply = NULL;
3262 ioc->base_cmds.reply = NULL;
3263 ioc->tm_cmds.reply = NULL;
3264 ioc->transport_cmds.reply = NULL;
3265 ioc->config_cmds.reply = NULL;
3266 ioc->pfacts = NULL;
3267 return r;
3268 }
3269
3270
3271 /**
3272 * mpt2sas_base_detach - remove controller instance
3273 * @ioc: per adapter object
3274 *
3275 * Return nothing.
3276 */
3277 void
3278 mpt2sas_base_detach(struct MPT2SAS_ADAPTER *ioc)
3279 {
3280 unsigned long flags;
3281 struct workqueue_struct *wq;
3282
3283 dexitprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
3284 __func__));
3285
3286 spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
3287 wq = ioc->fault_reset_work_q;
3288 ioc->fault_reset_work_q = NULL;
3289 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
3290 if (!cancel_delayed_work(&ioc->fault_reset_work))
3291 flush_workqueue(wq);
3292 destroy_workqueue(wq);
3293
3294 mpt2sas_base_free_resources(ioc);
3295 _base_release_memory_pools(ioc);
3296 kfree(ioc->pfacts);
3297 kfree(ioc->ctl_cmds.reply);
3298 kfree(ioc->base_cmds.reply);
3299 kfree(ioc->tm_cmds.reply);
3300 kfree(ioc->transport_cmds.reply);
3301 kfree(ioc->config_cmds.reply);
3302 }
3303
3304 /**
3305 * _base_reset_handler - reset callback handler (for base)
3306 * @ioc: per adapter object
3307 * @reset_phase: phase
3308 *
3309 * The handler for doing any required cleanup or initialization.
3310 *
3311 * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
3312 * MPT2_IOC_DONE_RESET
3313 *
3314 * Return nothing.
3315 */
3316 static void
3317 _base_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
3318 {
3319 switch (reset_phase) {
3320 case MPT2_IOC_PRE_RESET:
3321 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
3322 "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
3323 break;
3324 case MPT2_IOC_AFTER_RESET:
3325 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
3326 "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
3327 if (ioc->transport_cmds.status & MPT2_CMD_PENDING) {
3328 ioc->transport_cmds.status |= MPT2_CMD_RESET;
3329 mpt2sas_base_free_smid(ioc, ioc->transport_cmds.smid);
3330 complete(&ioc->transport_cmds.done);
3331 }
3332 if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
3333 ioc->base_cmds.status |= MPT2_CMD_RESET;
3334 mpt2sas_base_free_smid(ioc, ioc->base_cmds.smid);
3335 complete(&ioc->base_cmds.done);
3336 }
3337 if (ioc->config_cmds.status & MPT2_CMD_PENDING) {
3338 ioc->config_cmds.status |= MPT2_CMD_RESET;
3339 mpt2sas_base_free_smid(ioc, ioc->config_cmds.smid);
3340 complete(&ioc->config_cmds.done);
3341 }
3342 break;
3343 case MPT2_IOC_DONE_RESET:
3344 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
3345 "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
3346 break;
3347 }
3348 mpt2sas_scsih_reset_handler(ioc, reset_phase);
3349 mpt2sas_ctl_reset_handler(ioc, reset_phase);
3350 }
3351
3352 /**
3353 * _wait_for_commands_to_complete - reset controller
3354 * @ioc: Pointer to MPT_ADAPTER structure
3355 * @sleep_flag: CAN_SLEEP or NO_SLEEP
3356 *
3357 * This function waiting(3s) for all pending commands to complete
3358 * prior to putting controller in reset.
3359 */
3360 static void
3361 _wait_for_commands_to_complete(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3362 {
3363 u32 ioc_state;
3364 unsigned long flags;
3365 u16 i;
3366
3367 ioc->pending_io_count = 0;
3368 if (sleep_flag != CAN_SLEEP)
3369 return;
3370
3371 ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
3372 if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL)
3373 return;
3374
3375 /* pending command count */
3376 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
3377 for (i = 0; i < ioc->request_depth; i++)
3378 if (ioc->scsi_lookup[i].cb_idx != 0xFF)
3379 ioc->pending_io_count++;
3380 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
3381
3382 if (!ioc->pending_io_count)
3383 return;
3384
3385 /* wait for pending commands to complete */
3386 wait_event_timeout(ioc->reset_wq, ioc->pending_io_count == 0, 3 * HZ);
3387 }
3388
3389 /**
3390 * mpt2sas_base_hard_reset_handler - reset controller
3391 * @ioc: Pointer to MPT_ADAPTER structure
3392 * @sleep_flag: CAN_SLEEP or NO_SLEEP
3393 * @type: FORCE_BIG_HAMMER or SOFT_RESET
3394 *
3395 * Returns 0 for success, non-zero for failure.
3396 */
3397 int
3398 mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
3399 enum reset_type type)
3400 {
3401 int r, i;
3402 unsigned long flags;
3403
3404 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
3405 __func__));
3406
3407 spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
3408 if (ioc->ioc_reset_in_progress) {
3409 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
3410 printk(MPT2SAS_ERR_FMT "%s: busy\n",
3411 ioc->name, __func__);
3412 return -EBUSY;
3413 }
3414 ioc->ioc_reset_in_progress = 1;
3415 ioc->shost_recovery = 1;
3416 if (ioc->shost->shost_state == SHOST_RUNNING) {
3417 /* set back to SHOST_RUNNING in mpt2sas_scsih.c */
3418 scsi_host_set_state(ioc->shost, SHOST_RECOVERY);
3419 printk(MPT2SAS_INFO_FMT "putting controller into "
3420 "SHOST_RECOVERY\n", ioc->name);
3421 }
3422 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
3423
3424 _base_reset_handler(ioc, MPT2_IOC_PRE_RESET);
3425 _wait_for_commands_to_complete(ioc, sleep_flag);
3426 _base_mask_interrupts(ioc);
3427 r = _base_make_ioc_ready(ioc, sleep_flag, type);
3428 if (r)
3429 goto out;
3430 _base_reset_handler(ioc, MPT2_IOC_AFTER_RESET);
3431 for (i = 0 ; i < ioc->facts.NumberOfPorts; i++)
3432 r = _base_make_ioc_operational(ioc, ioc->pfacts[i].VF_ID,
3433 sleep_flag);
3434 if (!r)
3435 _base_reset_handler(ioc, MPT2_IOC_DONE_RESET);
3436 out:
3437 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: %s\n",
3438 ioc->name, __func__, ((r == 0) ? "SUCCESS" : "FAILED")));
3439
3440 spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
3441 ioc->ioc_reset_in_progress = 0;
3442 spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
3443 return r;
3444 }
Linux kernel - Deliverables
This page took 0.131957 seconds and 6 git commands to generate.