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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / scsi / mpt2sas / mpt2sas_ctl.c
blobb7f887c9b0bfdae9460ef64f39c43a04a5e23bca
1 /*
2 * Management Module Support for MPT (Message Passing Technology) based
3 * controllers
4 *
5 * This code is based on drivers/scsi/mpt2sas/mpt2_ctl.c
6 * Copyright (C) 2007-2013 LSI Corporation
7 * (mailto:DL-MPTFusionLinux@lsi.com)
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * NO WARRANTY
20 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
21 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
22 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
23 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
24 * solely responsible for determining the appropriateness of using and
25 * distributing the Program and assumes all risks associated with its
26 * exercise of rights under this Agreement, including but not limited to
27 * the risks and costs of program errors, damage to or loss of data,
28 * programs or equipment, and unavailability or interruption of operations.
29
30 * DISCLAIMER OF LIABILITY
31 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
32 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
34 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
35 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
36 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
37 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
38
39 * You should have received a copy of the GNU General Public License
40 * along with this program; if not, write to the Free Software
41 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
42 * USA.
43 */
44
45 #include <linux/kernel.h>
46 #include <linux/module.h>
47 #include <linux/errno.h>
48 #include <linux/init.h>
49 #include <linux/slab.h>
50 #include <linux/types.h>
51 #include <linux/pci.h>
52 #include <linux/delay.h>
53 #include <linux/mutex.h>
54 #include <linux/compat.h>
55 #include <linux/poll.h>
56
57 #include <linux/io.h>
58 #include <linux/uaccess.h>
59
60 #include "mpt2sas_base.h"
61 #include "mpt2sas_ctl.h"
62
63 static DEFINE_MUTEX(_ctl_mutex);
64 static struct fasync_struct *async_queue;
65 static DECLARE_WAIT_QUEUE_HEAD(ctl_poll_wait);
66
67 static int _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type,
68 u8 *issue_reset);
69
70 /**
71 * enum block_state - blocking state
72 * @NON_BLOCKING: non blocking
73 * @BLOCKING: blocking
74 *
75 * These states are for ioctls that need to wait for a response
76 * from firmware, so they probably require sleep.
77 */
78 enum block_state {
79 NON_BLOCKING,
80 BLOCKING,
81 };
82
83 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
84 /**
85 * _ctl_sas_device_find_by_handle - sas device search
86 * @ioc: per adapter object
87 * @handle: sas device handle (assigned by firmware)
88 * Context: Calling function should acquire ioc->sas_device_lock
89 *
90 * This searches for sas_device based on sas_address, then return sas_device
91 * object.
92 */
93 static struct _sas_device *
94 _ctl_sas_device_find_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle)
95 {
96 struct _sas_device *sas_device, *r;
97
98 r = NULL;
99 list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
100 if (sas_device->handle != handle)
101 continue;
102 r = sas_device;
103 goto out;
104 }
105
106 out:
107 return r;
108 }
109
110 /**
111 * _ctl_display_some_debug - debug routine
112 * @ioc: per adapter object
113 * @smid: system request message index
114 * @calling_function_name: string pass from calling function
115 * @mpi_reply: reply message frame
116 * Context: none.
117 *
118 * Function for displaying debug info helpful when debugging issues
119 * in this module.
120 */
121 static void
122 _ctl_display_some_debug(struct MPT2SAS_ADAPTER *ioc, u16 smid,
123 char *calling_function_name, MPI2DefaultReply_t *mpi_reply)
124 {
125 Mpi2ConfigRequest_t *mpi_request;
126 char *desc = NULL;
127
128 if (!(ioc->logging_level & MPT_DEBUG_IOCTL))
129 return;
130
131 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
132 switch (mpi_request->Function) {
133 case MPI2_FUNCTION_SCSI_IO_REQUEST:
134 {
135 Mpi2SCSIIORequest_t *scsi_request =
136 (Mpi2SCSIIORequest_t *)mpi_request;
137
138 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
139 "scsi_io, cmd(0x%02x), cdb_len(%d)",
140 scsi_request->CDB.CDB32[0],
141 le16_to_cpu(scsi_request->IoFlags) & 0xF);
142 desc = ioc->tmp_string;
143 break;
144 }
145 case MPI2_FUNCTION_SCSI_TASK_MGMT:
146 desc = "task_mgmt";
147 break;
148 case MPI2_FUNCTION_IOC_INIT:
149 desc = "ioc_init";
150 break;
151 case MPI2_FUNCTION_IOC_FACTS:
152 desc = "ioc_facts";
153 break;
154 case MPI2_FUNCTION_CONFIG:
155 {
156 Mpi2ConfigRequest_t *config_request =
157 (Mpi2ConfigRequest_t *)mpi_request;
158
159 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
160 "config, type(0x%02x), ext_type(0x%02x), number(%d)",
161 (config_request->Header.PageType &
162 MPI2_CONFIG_PAGETYPE_MASK), config_request->ExtPageType,
163 config_request->Header.PageNumber);
164 desc = ioc->tmp_string;
165 break;
166 }
167 case MPI2_FUNCTION_PORT_FACTS:
168 desc = "port_facts";
169 break;
170 case MPI2_FUNCTION_PORT_ENABLE:
171 desc = "port_enable";
172 break;
173 case MPI2_FUNCTION_EVENT_NOTIFICATION:
174 desc = "event_notification";
175 break;
176 case MPI2_FUNCTION_FW_DOWNLOAD:
177 desc = "fw_download";
178 break;
179 case MPI2_FUNCTION_FW_UPLOAD:
180 desc = "fw_upload";
181 break;
182 case MPI2_FUNCTION_RAID_ACTION:
183 desc = "raid_action";
184 break;
185 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
186 {
187 Mpi2SCSIIORequest_t *scsi_request =
188 (Mpi2SCSIIORequest_t *)mpi_request;
189
190 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
191 "raid_pass, cmd(0x%02x), cdb_len(%d)",
192 scsi_request->CDB.CDB32[0],
193 le16_to_cpu(scsi_request->IoFlags) & 0xF);
194 desc = ioc->tmp_string;
195 break;
196 }
197 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
198 desc = "sas_iounit_cntl";
199 break;
200 case MPI2_FUNCTION_SATA_PASSTHROUGH:
201 desc = "sata_pass";
202 break;
203 case MPI2_FUNCTION_DIAG_BUFFER_POST:
204 desc = "diag_buffer_post";
205 break;
206 case MPI2_FUNCTION_DIAG_RELEASE:
207 desc = "diag_release";
208 break;
209 case MPI2_FUNCTION_SMP_PASSTHROUGH:
210 desc = "smp_passthrough";
211 break;
212 }
213
214 if (!desc)
215 return;
216
217 printk(MPT2SAS_INFO_FMT "%s: %s, smid(%d)\n",
218 ioc->name, calling_function_name, desc, smid);
219
220 if (!mpi_reply)
221 return;
222
223 if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo)
224 printk(MPT2SAS_INFO_FMT
225 "\tiocstatus(0x%04x), loginfo(0x%08x)\n",
226 ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
227 le32_to_cpu(mpi_reply->IOCLogInfo));
228
229 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
230 mpi_request->Function ==
231 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
232 Mpi2SCSIIOReply_t *scsi_reply =
233 (Mpi2SCSIIOReply_t *)mpi_reply;
234 struct _sas_device *sas_device = NULL;
235 unsigned long flags;
236
237 spin_lock_irqsave(&ioc->sas_device_lock, flags);
238 sas_device = _ctl_sas_device_find_by_handle(ioc,
239 le16_to_cpu(scsi_reply->DevHandle));
240 if (sas_device) {
241 printk(MPT2SAS_WARN_FMT "\tsas_address(0x%016llx), "
242 "phy(%d)\n", ioc->name, (unsigned long long)
243 sas_device->sas_address, sas_device->phy);
244 printk(MPT2SAS_WARN_FMT
245 "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
246 ioc->name, sas_device->enclosure_logical_id,
247 sas_device->slot);
248 }
249 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
250 if (scsi_reply->SCSIState || scsi_reply->SCSIStatus)
251 printk(MPT2SAS_INFO_FMT
252 "\tscsi_state(0x%02x), scsi_status"
253 "(0x%02x)\n", ioc->name,
254 scsi_reply->SCSIState,
255 scsi_reply->SCSIStatus);
256 }
257 }
258 #endif
259
260 /**
261 * mpt2sas_ctl_done - ctl module completion routine
262 * @ioc: per adapter object
263 * @smid: system request message index
264 * @msix_index: MSIX table index supplied by the OS
265 * @reply: reply message frame(lower 32bit addr)
266 * Context: none.
267 *
268 * The callback handler when using ioc->ctl_cb_idx.
269 *
270 * Return 1 meaning mf should be freed from _base_interrupt
271 * 0 means the mf is freed from this function.
272 */
273 u8
274 mpt2sas_ctl_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
275 u32 reply)
276 {
277 MPI2DefaultReply_t *mpi_reply;
278 Mpi2SCSIIOReply_t *scsiio_reply;
279 const void *sense_data;
280 u32 sz;
281
282 if (ioc->ctl_cmds.status == MPT2_CMD_NOT_USED)
283 return 1;
284 if (ioc->ctl_cmds.smid != smid)
285 return 1;
286 ioc->ctl_cmds.status |= MPT2_CMD_COMPLETE;
287 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
288 if (mpi_reply) {
289 memcpy(ioc->ctl_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
290 ioc->ctl_cmds.status |= MPT2_CMD_REPLY_VALID;
291 /* get sense data */
292 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
293 mpi_reply->Function ==
294 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
295 scsiio_reply = (Mpi2SCSIIOReply_t *)mpi_reply;
296 if (scsiio_reply->SCSIState &
297 MPI2_SCSI_STATE_AUTOSENSE_VALID) {
298 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
299 le32_to_cpu(scsiio_reply->SenseCount));
300 sense_data = mpt2sas_base_get_sense_buffer(ioc,
301 smid);
302 memcpy(ioc->ctl_cmds.sense, sense_data, sz);
303 }
304 }
305 }
306 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
307 _ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply);
308 #endif
309 ioc->ctl_cmds.status &= ~MPT2_CMD_PENDING;
310 complete(&ioc->ctl_cmds.done);
311 return 1;
312 }
313
314 /**
315 * _ctl_check_event_type - determines when an event needs logging
316 * @ioc: per adapter object
317 * @event: firmware event
318 *
319 * The bitmask in ioc->event_type[] indicates which events should be
320 * be saved in the driver event_log. This bitmask is set by application.
321 *
322 * Returns 1 when event should be captured, or zero means no match.
323 */
324 static int
325 _ctl_check_event_type(struct MPT2SAS_ADAPTER *ioc, u16 event)
326 {
327 u16 i;
328 u32 desired_event;
329
330 if (event >= 128 || !event || !ioc->event_log)
331 return 0;
332
333 desired_event = (1 << (event % 32));
334 if (!desired_event)
335 desired_event = 1;
336 i = event / 32;
337 return desired_event & ioc->event_type[i];
338 }
339
340 /**
341 * mpt2sas_ctl_add_to_event_log - add event
342 * @ioc: per adapter object
343 * @mpi_reply: reply message frame
344 *
345 * Return nothing.
346 */
347 void
348 mpt2sas_ctl_add_to_event_log(struct MPT2SAS_ADAPTER *ioc,
349 Mpi2EventNotificationReply_t *mpi_reply)
350 {
351 struct MPT2_IOCTL_EVENTS *event_log;
352 u16 event;
353 int i;
354 u32 sz, event_data_sz;
355 u8 send_aen = 0;
356
357 if (!ioc->event_log)
358 return;
359
360 event = le16_to_cpu(mpi_reply->Event);
361
362 if (_ctl_check_event_type(ioc, event)) {
363
364 /* insert entry into circular event_log */
365 i = ioc->event_context % MPT2SAS_CTL_EVENT_LOG_SIZE;
366 event_log = ioc->event_log;
367 event_log[i].event = event;
368 event_log[i].context = ioc->event_context++;
369
370 event_data_sz = le16_to_cpu(mpi_reply->EventDataLength)*4;
371 sz = min_t(u32, event_data_sz, MPT2_EVENT_DATA_SIZE);
372 memset(event_log[i].data, 0, MPT2_EVENT_DATA_SIZE);
373 memcpy(event_log[i].data, mpi_reply->EventData, sz);
374 send_aen = 1;
375 }
376
377 /* This aen_event_read_flag flag is set until the
378 * application has read the event log.
379 * For MPI2_EVENT_LOG_ENTRY_ADDED, we always notify.
380 */
381 if (event == MPI2_EVENT_LOG_ENTRY_ADDED ||
382 (send_aen && !ioc->aen_event_read_flag)) {
383 ioc->aen_event_read_flag = 1;
384 wake_up_interruptible(&ctl_poll_wait);
385 if (async_queue)
386 kill_fasync(&async_queue, SIGIO, POLL_IN);
387 }
388 }
389
390 /**
391 * mpt2sas_ctl_event_callback - firmware event handler (called at ISR time)
392 * @ioc: per adapter object
393 * @msix_index: MSIX table index supplied by the OS
394 * @reply: reply message frame(lower 32bit addr)
395 * Context: interrupt.
396 *
397 * This function merely adds a new work task into ioc->firmware_event_thread.
398 * The tasks are worked from _firmware_event_work in user context.
399 *
400 * Returns void.
401 */
402 void
403 mpt2sas_ctl_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 msix_index,
404 u32 reply)
405 {
406 Mpi2EventNotificationReply_t *mpi_reply;
407
408 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
409 if (unlikely(!mpi_reply)) {
410 printk(MPT2SAS_ERR_FMT "mpi_reply not valid at %s:%d/%s()!\n",
411 ioc->name, __FILE__, __LINE__, __func__);
412 return;
413 }
414 mpt2sas_ctl_add_to_event_log(ioc, mpi_reply);
415 return;
416 }
417
418 /**
419 * _ctl_verify_adapter - validates ioc_number passed from application
420 * @ioc: per adapter object
421 * @iocpp: The ioc pointer is returned in this.
422 *
423 * Return (-1) means error, else ioc_number.
424 */
425 static int
426 _ctl_verify_adapter(int ioc_number, struct MPT2SAS_ADAPTER **iocpp)
427 {
428 struct MPT2SAS_ADAPTER *ioc;
429
430 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
431 if (ioc->id != ioc_number)
432 continue;
433 *iocpp = ioc;
434 return ioc_number;
435 }
436 *iocpp = NULL;
437 return -1;
438 }
439
440 /**
441 * mpt2sas_ctl_reset_handler - reset callback handler (for ctl)
442 * @ioc: per adapter object
443 * @reset_phase: phase
444 *
445 * The handler for doing any required cleanup or initialization.
446 *
447 * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
448 * MPT2_IOC_DONE_RESET
449 */
450 void
451 mpt2sas_ctl_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
452 {
453 int i;
454 u8 issue_reset;
455
456 switch (reset_phase) {
457 case MPT2_IOC_PRE_RESET:
458 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
459 "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
460 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
461 if (!(ioc->diag_buffer_status[i] &
462 MPT2_DIAG_BUFFER_IS_REGISTERED))
463 continue;
464 if ((ioc->diag_buffer_status[i] &
465 MPT2_DIAG_BUFFER_IS_RELEASED))
466 continue;
467 _ctl_send_release(ioc, i, &issue_reset);
468 }
469 break;
470 case MPT2_IOC_AFTER_RESET:
471 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
472 "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
473 if (ioc->ctl_cmds.status & MPT2_CMD_PENDING) {
474 ioc->ctl_cmds.status |= MPT2_CMD_RESET;
475 mpt2sas_base_free_smid(ioc, ioc->ctl_cmds.smid);
476 complete(&ioc->ctl_cmds.done);
477 }
478 break;
479 case MPT2_IOC_DONE_RESET:
480 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
481 "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
482
483 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
484 if (!(ioc->diag_buffer_status[i] &
485 MPT2_DIAG_BUFFER_IS_REGISTERED))
486 continue;
487 if ((ioc->diag_buffer_status[i] &
488 MPT2_DIAG_BUFFER_IS_RELEASED))
489 continue;
490 ioc->diag_buffer_status[i] |=
491 MPT2_DIAG_BUFFER_IS_DIAG_RESET;
492 }
493 break;
494 }
495 }
496
497 /**
498 * _ctl_fasync -
499 * @fd -
500 * @filep -
501 * @mode -
502 *
503 * Called when application request fasyn callback handler.
504 */
505 static int
506 _ctl_fasync(int fd, struct file *filep, int mode)
507 {
508 return fasync_helper(fd, filep, mode, &async_queue);
509 }
510
511 /**
512 * _ctl_poll -
513 * @file -
514 * @wait -
515 *
516 */
517 static unsigned int
518 _ctl_poll(struct file *filep, poll_table *wait)
519 {
520 struct MPT2SAS_ADAPTER *ioc;
521
522 poll_wait(filep, &ctl_poll_wait, wait);
523
524 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
525 if (ioc->aen_event_read_flag)
526 return POLLIN | POLLRDNORM;
527 }
528 return 0;
529 }
530
531 /**
532 * _ctl_set_task_mid - assign an active smid to tm request
533 * @ioc: per adapter object
534 * @karg - (struct mpt2_ioctl_command)
535 * @tm_request - pointer to mf from user space
536 *
537 * Returns 0 when an smid if found, else fail.
538 * during failure, the reply frame is filled.
539 */
540 static int
541 _ctl_set_task_mid(struct MPT2SAS_ADAPTER *ioc, struct mpt2_ioctl_command *karg,
542 Mpi2SCSITaskManagementRequest_t *tm_request)
543 {
544 u8 found = 0;
545 u16 i;
546 u16 handle;
547 struct scsi_cmnd *scmd;
548 struct MPT2SAS_DEVICE *priv_data;
549 unsigned long flags;
550 Mpi2SCSITaskManagementReply_t *tm_reply;
551 u32 sz;
552 u32 lun;
553 char *desc = NULL;
554
555 if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
556 desc = "abort_task";
557 else if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
558 desc = "query_task";
559 else
560 return 0;
561
562 lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN);
563
564 handle = le16_to_cpu(tm_request->DevHandle);
565 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
566 for (i = ioc->scsiio_depth; i && !found; i--) {
567 scmd = ioc->scsi_lookup[i - 1].scmd;
568 if (scmd == NULL || scmd->device == NULL ||
569 scmd->device->hostdata == NULL)
570 continue;
571 if (lun != scmd->device->lun)
572 continue;
573 priv_data = scmd->device->hostdata;
574 if (priv_data->sas_target == NULL)
575 continue;
576 if (priv_data->sas_target->handle != handle)
577 continue;
578 tm_request->TaskMID = cpu_to_le16(ioc->scsi_lookup[i - 1].smid);
579 found = 1;
580 }
581 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
582
583 if (!found) {
584 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
585 "handle(0x%04x), lun(%d), no active mid!!\n", ioc->name,
586 desc, le16_to_cpu(tm_request->DevHandle), lun));
587 tm_reply = ioc->ctl_cmds.reply;
588 tm_reply->DevHandle = tm_request->DevHandle;
589 tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
590 tm_reply->TaskType = tm_request->TaskType;
591 tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4;
592 tm_reply->VP_ID = tm_request->VP_ID;
593 tm_reply->VF_ID = tm_request->VF_ID;
594 sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz);
595 if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply,
596 sz))
597 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
598 __LINE__, __func__);
599 return 1;
600 }
601
602 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
603 "handle(0x%04x), lun(%d), task_mid(%d)\n", ioc->name,
604 desc, le16_to_cpu(tm_request->DevHandle), lun,
605 le16_to_cpu(tm_request->TaskMID)));
606 return 0;
607 }
608
609 /**
610 * _ctl_do_mpt_command - main handler for MPT2COMMAND opcode
611 * @ioc: per adapter object
612 * @karg - (struct mpt2_ioctl_command)
613 * @mf - pointer to mf in user space
614 */
615 static long
616 _ctl_do_mpt_command(struct MPT2SAS_ADAPTER *ioc, struct mpt2_ioctl_command karg,
617 void __user *mf)
618 {
619 MPI2RequestHeader_t *mpi_request = NULL, *request;
620 MPI2DefaultReply_t *mpi_reply;
621 u32 ioc_state;
622 u16 ioc_status;
623 u16 smid;
624 unsigned long timeout, timeleft;
625 u8 issue_reset;
626 u32 sz;
627 void *psge;
628 void *data_out = NULL;
629 dma_addr_t data_out_dma;
630 size_t data_out_sz = 0;
631 void *data_in = NULL;
632 dma_addr_t data_in_dma;
633 size_t data_in_sz = 0;
634 u32 sgl_flags;
635 long ret;
636 u16 wait_state_count;
637
638 issue_reset = 0;
639
640 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
641 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
642 ioc->name, __func__);
643 ret = -EAGAIN;
644 goto out;
645 }
646
647 wait_state_count = 0;
648 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
649 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
650 if (wait_state_count++ == 10) {
651 printk(MPT2SAS_ERR_FMT
652 "%s: failed due to ioc not operational\n",
653 ioc->name, __func__);
654 ret = -EFAULT;
655 goto out;
656 }
657 ssleep(1);
658 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
659 printk(MPT2SAS_INFO_FMT "%s: waiting for "
660 "operational state(count=%d)\n", ioc->name,
661 __func__, wait_state_count);
662 }
663 if (wait_state_count)
664 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
665 ioc->name, __func__);
666
667 mpi_request = kzalloc(ioc->request_sz, GFP_KERNEL);
668 if (!mpi_request) {
669 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a memory for "
670 "mpi_request\n", ioc->name, __func__);
671 ret = -ENOMEM;
672 goto out;
673 }
674
675 /* Check for overflow and wraparound */
676 if (karg.data_sge_offset * 4 > ioc->request_sz ||
677 karg.data_sge_offset > (UINT_MAX / 4)) {
678 ret = -EINVAL;
679 goto out;
680 }
681
682 /* copy in request message frame from user */
683 if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) {
684 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__,
685 __func__);
686 ret = -EFAULT;
687 goto out;
688 }
689
690 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
691 smid = mpt2sas_base_get_smid_hpr(ioc, ioc->ctl_cb_idx);
692 if (!smid) {
693 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
694 ioc->name, __func__);
695 ret = -EAGAIN;
696 goto out;
697 }
698 } else {
699
700 smid = mpt2sas_base_get_smid_scsiio(ioc, ioc->ctl_cb_idx, NULL);
701 if (!smid) {
702 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
703 ioc->name, __func__);
704 ret = -EAGAIN;
705 goto out;
706 }
707 }
708
709 ret = 0;
710 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
711 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
712 request = mpt2sas_base_get_msg_frame(ioc, smid);
713 memcpy(request, mpi_request, karg.data_sge_offset*4);
714 ioc->ctl_cmds.smid = smid;
715 data_out_sz = karg.data_out_size;
716 data_in_sz = karg.data_in_size;
717
718 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
719 mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
720 if (!le16_to_cpu(mpi_request->FunctionDependent1) ||
721 le16_to_cpu(mpi_request->FunctionDependent1) >
722 ioc->facts.MaxDevHandle) {
723 ret = -EINVAL;
724 mpt2sas_base_free_smid(ioc, smid);
725 goto out;
726 }
727 }
728
729 /* obtain dma-able memory for data transfer */
730 if (data_out_sz) /* WRITE */ {
731 data_out = pci_alloc_consistent(ioc->pdev, data_out_sz,
732 &data_out_dma);
733 if (!data_out) {
734 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
735 __LINE__, __func__);
736 ret = -ENOMEM;
737 mpt2sas_base_free_smid(ioc, smid);
738 goto out;
739 }
740 if (copy_from_user(data_out, karg.data_out_buf_ptr,
741 data_out_sz)) {
742 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
743 __LINE__, __func__);
744 ret = -EFAULT;
745 mpt2sas_base_free_smid(ioc, smid);
746 goto out;
747 }
748 }
749
750 if (data_in_sz) /* READ */ {
751 data_in = pci_alloc_consistent(ioc->pdev, data_in_sz,
752 &data_in_dma);
753 if (!data_in) {
754 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
755 __LINE__, __func__);
756 ret = -ENOMEM;
757 mpt2sas_base_free_smid(ioc, smid);
758 goto out;
759 }
760 }
761
762 /* add scatter gather elements */
763 psge = (void *)request + (karg.data_sge_offset*4);
764
765 if (!data_out_sz && !data_in_sz) {
766 mpt2sas_base_build_zero_len_sge(ioc, psge);
767 } else if (data_out_sz && data_in_sz) {
768 /* WRITE sgel first */
769 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
770 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
771 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
772 ioc->base_add_sg_single(psge, sgl_flags |
773 data_out_sz, data_out_dma);
774
775 /* incr sgel */
776 psge += ioc->sge_size;
777
778 /* READ sgel last */
779 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
780 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
781 MPI2_SGE_FLAGS_END_OF_LIST);
782 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
783 ioc->base_add_sg_single(psge, sgl_flags |
784 data_in_sz, data_in_dma);
785 } else if (data_out_sz) /* WRITE */ {
786 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
787 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
788 MPI2_SGE_FLAGS_END_OF_LIST | MPI2_SGE_FLAGS_HOST_TO_IOC);
789 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
790 ioc->base_add_sg_single(psge, sgl_flags |
791 data_out_sz, data_out_dma);
792 } else if (data_in_sz) /* READ */ {
793 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
794 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
795 MPI2_SGE_FLAGS_END_OF_LIST);
796 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
797 ioc->base_add_sg_single(psge, sgl_flags |
798 data_in_sz, data_in_dma);
799 }
800
801 /* send command to firmware */
802 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
803 _ctl_display_some_debug(ioc, smid, "ctl_request", NULL);
804 #endif
805
806 init_completion(&ioc->ctl_cmds.done);
807 switch (mpi_request->Function) {
808 case MPI2_FUNCTION_SCSI_IO_REQUEST:
809 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
810 {
811 Mpi2SCSIIORequest_t *scsiio_request =
812 (Mpi2SCSIIORequest_t *)request;
813 scsiio_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
814 scsiio_request->SenseBufferLowAddress =
815 mpt2sas_base_get_sense_buffer_dma(ioc, smid);
816 memset(ioc->ctl_cmds.sense, 0, SCSI_SENSE_BUFFERSIZE);
817 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)
818 mpt2sas_base_put_smid_scsi_io(ioc, smid,
819 le16_to_cpu(mpi_request->FunctionDependent1));
820 else
821 mpt2sas_base_put_smid_default(ioc, smid);
822 break;
823 }
824 case MPI2_FUNCTION_SCSI_TASK_MGMT:
825 {
826 Mpi2SCSITaskManagementRequest_t *tm_request =
827 (Mpi2SCSITaskManagementRequest_t *)request;
828
829 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "TASK_MGMT: "
830 "handle(0x%04x), task_type(0x%02x)\n", ioc->name,
831 le16_to_cpu(tm_request->DevHandle), tm_request->TaskType));
832
833 if (tm_request->TaskType ==
834 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK ||
835 tm_request->TaskType ==
836 MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) {
837 if (_ctl_set_task_mid(ioc, &karg, tm_request)) {
838 mpt2sas_base_free_smid(ioc, smid);
839 goto out;
840 }
841 }
842
843 mpt2sas_scsih_set_tm_flag(ioc, le16_to_cpu(
844 tm_request->DevHandle));
845 mpt2sas_base_put_smid_hi_priority(ioc, smid);
846 break;
847 }
848 case MPI2_FUNCTION_SMP_PASSTHROUGH:
849 {
850 Mpi2SmpPassthroughRequest_t *smp_request =
851 (Mpi2SmpPassthroughRequest_t *)mpi_request;
852 u8 *data;
853
854 /* ioc determines which port to use */
855 smp_request->PhysicalPort = 0xFF;
856 if (smp_request->PassthroughFlags &
857 MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE)
858 data = (u8 *)&smp_request->SGL;
859 else {
860 if (unlikely(data_out == NULL)) {
861 printk(KERN_ERR "failure at %s:%d/%s()!\n",
862 __FILE__, __LINE__, __func__);
863 mpt2sas_base_free_smid(ioc, smid);
864 ret = -EINVAL;
865 goto out;
866 }
867 data = data_out;
868 }
869
870 if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) {
871 ioc->ioc_link_reset_in_progress = 1;
872 ioc->ignore_loginfos = 1;
873 }
874 mpt2sas_base_put_smid_default(ioc, smid);
875 break;
876 }
877 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
878 {
879 Mpi2SasIoUnitControlRequest_t *sasiounit_request =
880 (Mpi2SasIoUnitControlRequest_t *)mpi_request;
881
882 if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET
883 || sasiounit_request->Operation ==
884 MPI2_SAS_OP_PHY_LINK_RESET) {
885 ioc->ioc_link_reset_in_progress = 1;
886 ioc->ignore_loginfos = 1;
887 }
888 mpt2sas_base_put_smid_default(ioc, smid);
889 break;
890 }
891 default:
892 mpt2sas_base_put_smid_default(ioc, smid);
893 break;
894 }
895
896 if (karg.timeout < MPT2_IOCTL_DEFAULT_TIMEOUT)
897 timeout = MPT2_IOCTL_DEFAULT_TIMEOUT;
898 else
899 timeout = karg.timeout;
900 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
901 timeout*HZ);
902 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
903 Mpi2SCSITaskManagementRequest_t *tm_request =
904 (Mpi2SCSITaskManagementRequest_t *)mpi_request;
905 mpt2sas_scsih_clear_tm_flag(ioc, le16_to_cpu(
906 tm_request->DevHandle));
907 } else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH ||
908 mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) &&
909 ioc->ioc_link_reset_in_progress) {
910 ioc->ioc_link_reset_in_progress = 0;
911 ioc->ignore_loginfos = 0;
912 }
913 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
914 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
915 __func__);
916 _debug_dump_mf(mpi_request, karg.data_sge_offset);
917 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
918 issue_reset = 1;
919 goto issue_host_reset;
920 }
921
922 mpi_reply = ioc->ctl_cmds.reply;
923 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
924
925 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
926 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT &&
927 (ioc->logging_level & MPT_DEBUG_TM)) {
928 Mpi2SCSITaskManagementReply_t *tm_reply =
929 (Mpi2SCSITaskManagementReply_t *)mpi_reply;
930
931 printk(MPT2SAS_INFO_FMT "TASK_MGMT: "
932 "IOCStatus(0x%04x), IOCLogInfo(0x%08x), "
933 "TerminationCount(0x%08x)\n", ioc->name,
934 le16_to_cpu(tm_reply->IOCStatus),
935 le32_to_cpu(tm_reply->IOCLogInfo),
936 le32_to_cpu(tm_reply->TerminationCount));
937 }
938 #endif
939 /* copy out xdata to user */
940 if (data_in_sz) {
941 if (copy_to_user(karg.data_in_buf_ptr, data_in,
942 data_in_sz)) {
943 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
944 __LINE__, __func__);
945 ret = -ENODATA;
946 goto out;
947 }
948 }
949
950 /* copy out reply message frame to user */
951 if (karg.max_reply_bytes) {
952 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
953 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
954 sz)) {
955 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
956 __LINE__, __func__);
957 ret = -ENODATA;
958 goto out;
959 }
960 }
961
962 /* copy out sense to user */
963 if (karg.max_sense_bytes && (mpi_request->Function ==
964 MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
965 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
966 sz = min_t(u32, karg.max_sense_bytes, SCSI_SENSE_BUFFERSIZE);
967 if (copy_to_user(karg.sense_data_ptr,
968 ioc->ctl_cmds.sense, sz)) {
969 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
970 __LINE__, __func__);
971 ret = -ENODATA;
972 goto out;
973 }
974 }
975
976 issue_host_reset:
977 if (issue_reset) {
978 ret = -ENODATA;
979 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
980 mpi_request->Function ==
981 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
982 mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH)) {
983 printk(MPT2SAS_INFO_FMT "issue target reset: handle "
984 "= (0x%04x)\n", ioc->name,
985 le16_to_cpu(mpi_request->FunctionDependent1));
986 mpt2sas_halt_firmware(ioc);
987 mpt2sas_scsih_issue_tm(ioc,
988 le16_to_cpu(mpi_request->FunctionDependent1), 0, 0,
989 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 10,
990 0, TM_MUTEX_ON);
991 ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
992 } else
993 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
994 FORCE_BIG_HAMMER);
995 }
996
997 out:
998
999 /* free memory associated with sg buffers */
1000 if (data_in)
1001 pci_free_consistent(ioc->pdev, data_in_sz, data_in,
1002 data_in_dma);
1003
1004 if (data_out)
1005 pci_free_consistent(ioc->pdev, data_out_sz, data_out,
1006 data_out_dma);
1007
1008 kfree(mpi_request);
1009 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1010 return ret;
1011 }
1012
1013 /**
1014 * _ctl_getiocinfo - main handler for MPT2IOCINFO opcode
1015 * @ioc: per adapter object
1016 * @arg - user space buffer containing ioctl content
1017 */
1018 static long
1019 _ctl_getiocinfo(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1020 {
1021 struct mpt2_ioctl_iocinfo karg;
1022
1023 if (copy_from_user(&karg, arg, sizeof(karg))) {
1024 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1025 __FILE__, __LINE__, __func__);
1026 return -EFAULT;
1027 }
1028
1029 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1030 __func__));
1031
1032 memset(&karg, 0 , sizeof(karg));
1033 if (ioc->is_warpdrive)
1034 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2_SSS6200;
1035 else
1036 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
1037 if (ioc->pfacts)
1038 karg.port_number = ioc->pfacts[0].PortNumber;
1039 karg.hw_rev = ioc->pdev->revision;
1040 karg.pci_id = ioc->pdev->device;
1041 karg.subsystem_device = ioc->pdev->subsystem_device;
1042 karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
1043 karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
1044 karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
1045 karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
1046 karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
1047 karg.firmware_version = ioc->facts.FWVersion.Word;
1048 strcpy(karg.driver_version, MPT2SAS_DRIVER_NAME);
1049 strcat(karg.driver_version, "-");
1050 strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
1051 karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
1052
1053 if (copy_to_user(arg, &karg, sizeof(karg))) {
1054 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1055 __FILE__, __LINE__, __func__);
1056 return -EFAULT;
1057 }
1058 return 0;
1059 }
1060
1061 /**
1062 * _ctl_eventquery - main handler for MPT2EVENTQUERY opcode
1063 * @ioc: per adapter object
1064 * @arg - user space buffer containing ioctl content
1065 */
1066 static long
1067 _ctl_eventquery(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1068 {
1069 struct mpt2_ioctl_eventquery karg;
1070
1071 if (copy_from_user(&karg, arg, sizeof(karg))) {
1072 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1073 __FILE__, __LINE__, __func__);
1074 return -EFAULT;
1075 }
1076
1077 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1078 __func__));
1079
1080 karg.event_entries = MPT2SAS_CTL_EVENT_LOG_SIZE;
1081 memcpy(karg.event_types, ioc->event_type,
1082 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1083
1084 if (copy_to_user(arg, &karg, sizeof(karg))) {
1085 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1086 __FILE__, __LINE__, __func__);
1087 return -EFAULT;
1088 }
1089 return 0;
1090 }
1091
1092 /**
1093 * _ctl_eventenable - main handler for MPT2EVENTENABLE opcode
1094 * @ioc: per adapter object
1095 * @arg - user space buffer containing ioctl content
1096 */
1097 static long
1098 _ctl_eventenable(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1099 {
1100 struct mpt2_ioctl_eventenable karg;
1101
1102 if (copy_from_user(&karg, arg, sizeof(karg))) {
1103 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1104 __FILE__, __LINE__, __func__);
1105 return -EFAULT;
1106 }
1107
1108 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1109 __func__));
1110
1111 if (ioc->event_log)
1112 return 0;
1113 memcpy(ioc->event_type, karg.event_types,
1114 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1115 mpt2sas_base_validate_event_type(ioc, ioc->event_type);
1116
1117 /* initialize event_log */
1118 ioc->event_context = 0;
1119 ioc->aen_event_read_flag = 0;
1120 ioc->event_log = kcalloc(MPT2SAS_CTL_EVENT_LOG_SIZE,
1121 sizeof(struct MPT2_IOCTL_EVENTS), GFP_KERNEL);
1122 if (!ioc->event_log) {
1123 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1124 __FILE__, __LINE__, __func__);
1125 return -ENOMEM;
1126 }
1127 return 0;
1128 }
1129
1130 /**
1131 * _ctl_eventreport - main handler for MPT2EVENTREPORT opcode
1132 * @ioc: per adapter object
1133 * @arg - user space buffer containing ioctl content
1134 */
1135 static long
1136 _ctl_eventreport(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1137 {
1138 struct mpt2_ioctl_eventreport karg;
1139 u32 number_bytes, max_events, max;
1140 struct mpt2_ioctl_eventreport __user *uarg = arg;
1141
1142 if (copy_from_user(&karg, arg, sizeof(karg))) {
1143 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1144 __FILE__, __LINE__, __func__);
1145 return -EFAULT;
1146 }
1147
1148 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1149 __func__));
1150
1151 number_bytes = karg.hdr.max_data_size -
1152 sizeof(struct mpt2_ioctl_header);
1153 max_events = number_bytes/sizeof(struct MPT2_IOCTL_EVENTS);
1154 max = min_t(u32, MPT2SAS_CTL_EVENT_LOG_SIZE, max_events);
1155
1156 /* If fewer than 1 event is requested, there must have
1157 * been some type of error.
1158 */
1159 if (!max || !ioc->event_log)
1160 return -ENODATA;
1161
1162 number_bytes = max * sizeof(struct MPT2_IOCTL_EVENTS);
1163 if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
1164 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1165 __FILE__, __LINE__, __func__);
1166 return -EFAULT;
1167 }
1168
1169 /* reset flag so SIGIO can restart */
1170 ioc->aen_event_read_flag = 0;
1171 return 0;
1172 }
1173
1174 /**
1175 * _ctl_do_reset - main handler for MPT2HARDRESET opcode
1176 * @ioc: per adapter object
1177 * @arg - user space buffer containing ioctl content
1178 */
1179 static long
1180 _ctl_do_reset(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1181 {
1182 struct mpt2_ioctl_diag_reset karg;
1183 int retval;
1184
1185 if (copy_from_user(&karg, arg, sizeof(karg))) {
1186 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1187 __FILE__, __LINE__, __func__);
1188 return -EFAULT;
1189 }
1190
1191 if (ioc->shost_recovery || ioc->pci_error_recovery ||
1192 ioc->is_driver_loading)
1193 return -EAGAIN;
1194 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1195 __func__));
1196
1197 retval = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1198 FORCE_BIG_HAMMER);
1199 printk(MPT2SAS_INFO_FMT "host reset: %s\n",
1200 ioc->name, ((!retval) ? "SUCCESS" : "FAILED"));
1201 return 0;
1202 }
1203
1204 /**
1205 * _ctl_btdh_search_sas_device - searching for sas device
1206 * @ioc: per adapter object
1207 * @btdh: btdh ioctl payload
1208 */
1209 static int
1210 _ctl_btdh_search_sas_device(struct MPT2SAS_ADAPTER *ioc,
1211 struct mpt2_ioctl_btdh_mapping *btdh)
1212 {
1213 struct _sas_device *sas_device;
1214 unsigned long flags;
1215 int rc = 0;
1216
1217 if (list_empty(&ioc->sas_device_list))
1218 return rc;
1219
1220 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1221 list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
1222 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1223 btdh->handle == sas_device->handle) {
1224 btdh->bus = sas_device->channel;
1225 btdh->id = sas_device->id;
1226 rc = 1;
1227 goto out;
1228 } else if (btdh->bus == sas_device->channel && btdh->id ==
1229 sas_device->id && btdh->handle == 0xFFFF) {
1230 btdh->handle = sas_device->handle;
1231 rc = 1;
1232 goto out;
1233 }
1234 }
1235 out:
1236 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1237 return rc;
1238 }
1239
1240 /**
1241 * _ctl_btdh_search_raid_device - searching for raid device
1242 * @ioc: per adapter object
1243 * @btdh: btdh ioctl payload
1244 */
1245 static int
1246 _ctl_btdh_search_raid_device(struct MPT2SAS_ADAPTER *ioc,
1247 struct mpt2_ioctl_btdh_mapping *btdh)
1248 {
1249 struct _raid_device *raid_device;
1250 unsigned long flags;
1251 int rc = 0;
1252
1253 if (list_empty(&ioc->raid_device_list))
1254 return rc;
1255
1256 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1257 list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
1258 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1259 btdh->handle == raid_device->handle) {
1260 btdh->bus = raid_device->channel;
1261 btdh->id = raid_device->id;
1262 rc = 1;
1263 goto out;
1264 } else if (btdh->bus == raid_device->channel && btdh->id ==
1265 raid_device->id && btdh->handle == 0xFFFF) {
1266 btdh->handle = raid_device->handle;
1267 rc = 1;
1268 goto out;
1269 }
1270 }
1271 out:
1272 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1273 return rc;
1274 }
1275
1276 /**
1277 * _ctl_btdh_mapping - main handler for MPT2BTDHMAPPING opcode
1278 * @ioc: per adapter object
1279 * @arg - user space buffer containing ioctl content
1280 */
1281 static long
1282 _ctl_btdh_mapping(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1283 {
1284 struct mpt2_ioctl_btdh_mapping karg;
1285 int rc;
1286
1287 if (copy_from_user(&karg, arg, sizeof(karg))) {
1288 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1289 __FILE__, __LINE__, __func__);
1290 return -EFAULT;
1291 }
1292
1293 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1294 __func__));
1295
1296 rc = _ctl_btdh_search_sas_device(ioc, &karg);
1297 if (!rc)
1298 _ctl_btdh_search_raid_device(ioc, &karg);
1299
1300 if (copy_to_user(arg, &karg, sizeof(karg))) {
1301 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1302 __FILE__, __LINE__, __func__);
1303 return -EFAULT;
1304 }
1305 return 0;
1306 }
1307
1308 /**
1309 * _ctl_diag_capability - return diag buffer capability
1310 * @ioc: per adapter object
1311 * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
1312 *
1313 * returns 1 when diag buffer support is enabled in firmware
1314 */
1315 static u8
1316 _ctl_diag_capability(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type)
1317 {
1318 u8 rc = 0;
1319
1320 switch (buffer_type) {
1321 case MPI2_DIAG_BUF_TYPE_TRACE:
1322 if (ioc->facts.IOCCapabilities &
1323 MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
1324 rc = 1;
1325 break;
1326 case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
1327 if (ioc->facts.IOCCapabilities &
1328 MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
1329 rc = 1;
1330 break;
1331 case MPI2_DIAG_BUF_TYPE_EXTENDED:
1332 if (ioc->facts.IOCCapabilities &
1333 MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER)
1334 rc = 1;
1335 }
1336
1337 return rc;
1338 }
1339
1340 /**
1341 * _ctl_diag_register_2 - wrapper for registering diag buffer support
1342 * @ioc: per adapter object
1343 * @diag_register: the diag_register struct passed in from user space
1344 *
1345 */
1346 static long
1347 _ctl_diag_register_2(struct MPT2SAS_ADAPTER *ioc,
1348 struct mpt2_diag_register *diag_register)
1349 {
1350 int rc, i;
1351 void *request_data = NULL;
1352 dma_addr_t request_data_dma;
1353 u32 request_data_sz = 0;
1354 Mpi2DiagBufferPostRequest_t *mpi_request;
1355 Mpi2DiagBufferPostReply_t *mpi_reply;
1356 u8 buffer_type;
1357 unsigned long timeleft;
1358 u16 smid;
1359 u16 ioc_status;
1360 u8 issue_reset = 0;
1361
1362 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1363 __func__));
1364
1365 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1366 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1367 ioc->name, __func__);
1368 rc = -EAGAIN;
1369 goto out;
1370 }
1371
1372 buffer_type = diag_register->buffer_type;
1373 if (!_ctl_diag_capability(ioc, buffer_type)) {
1374 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1375 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1376 return -EPERM;
1377 }
1378
1379 if (ioc->diag_buffer_status[buffer_type] &
1380 MPT2_DIAG_BUFFER_IS_REGISTERED) {
1381 printk(MPT2SAS_ERR_FMT "%s: already has a registered "
1382 "buffer for buffer_type(0x%02x)\n", ioc->name, __func__,
1383 buffer_type);
1384 return -EINVAL;
1385 }
1386
1387 if (diag_register->requested_buffer_size % 4) {
1388 printk(MPT2SAS_ERR_FMT "%s: the requested_buffer_size "
1389 "is not 4 byte aligned\n", ioc->name, __func__);
1390 return -EINVAL;
1391 }
1392
1393 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1394 if (!smid) {
1395 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1396 ioc->name, __func__);
1397 rc = -EAGAIN;
1398 goto out;
1399 }
1400
1401 rc = 0;
1402 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1403 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1404 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1405 ioc->ctl_cmds.smid = smid;
1406
1407 request_data = ioc->diag_buffer[buffer_type];
1408 request_data_sz = diag_register->requested_buffer_size;
1409 ioc->unique_id[buffer_type] = diag_register->unique_id;
1410 ioc->diag_buffer_status[buffer_type] = 0;
1411 memcpy(ioc->product_specific[buffer_type],
1412 diag_register->product_specific, MPT2_PRODUCT_SPECIFIC_DWORDS);
1413 ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags;
1414
1415 if (request_data) {
1416 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1417 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
1418 pci_free_consistent(ioc->pdev,
1419 ioc->diag_buffer_sz[buffer_type],
1420 request_data, request_data_dma);
1421 request_data = NULL;
1422 }
1423 }
1424
1425 if (request_data == NULL) {
1426 ioc->diag_buffer_sz[buffer_type] = 0;
1427 ioc->diag_buffer_dma[buffer_type] = 0;
1428 request_data = pci_alloc_consistent(
1429 ioc->pdev, request_data_sz, &request_data_dma);
1430 if (request_data == NULL) {
1431 printk(MPT2SAS_ERR_FMT "%s: failed allocating memory"
1432 " for diag buffers, requested size(%d)\n",
1433 ioc->name, __func__, request_data_sz);
1434 mpt2sas_base_free_smid(ioc, smid);
1435 return -ENOMEM;
1436 }
1437 ioc->diag_buffer[buffer_type] = request_data;
1438 ioc->diag_buffer_sz[buffer_type] = request_data_sz;
1439 ioc->diag_buffer_dma[buffer_type] = request_data_dma;
1440 }
1441
1442 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1443 mpi_request->BufferType = diag_register->buffer_type;
1444 mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags);
1445 mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
1446 mpi_request->BufferLength = cpu_to_le32(request_data_sz);
1447 mpi_request->VF_ID = 0; /* TODO */
1448 mpi_request->VP_ID = 0;
1449
1450 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: diag_buffer(0x%p), "
1451 "dma(0x%llx), sz(%d)\n", ioc->name, __func__, request_data,
1452 (unsigned long long)request_data_dma,
1453 le32_to_cpu(mpi_request->BufferLength)));
1454
1455 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1456 mpi_request->ProductSpecific[i] =
1457 cpu_to_le32(ioc->product_specific[buffer_type][i]);
1458
1459 init_completion(&ioc->ctl_cmds.done);
1460 mpt2sas_base_put_smid_default(ioc, smid);
1461 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1462 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1463
1464 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1465 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1466 __func__);
1467 _debug_dump_mf(mpi_request,
1468 sizeof(Mpi2DiagBufferPostRequest_t)/4);
1469 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1470 issue_reset = 1;
1471 goto issue_host_reset;
1472 }
1473
1474 /* process the completed Reply Message Frame */
1475 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1476 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1477 ioc->name, __func__);
1478 rc = -EFAULT;
1479 goto out;
1480 }
1481
1482 mpi_reply = ioc->ctl_cmds.reply;
1483 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1484
1485 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1486 ioc->diag_buffer_status[buffer_type] |=
1487 MPT2_DIAG_BUFFER_IS_REGISTERED;
1488 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
1489 ioc->name, __func__));
1490 } else {
1491 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
1492 "log_info(0x%08x)\n", ioc->name, __func__,
1493 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1494 rc = -EFAULT;
1495 }
1496
1497 issue_host_reset:
1498 if (issue_reset)
1499 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1500 FORCE_BIG_HAMMER);
1501
1502 out:
1503
1504 if (rc && request_data)
1505 pci_free_consistent(ioc->pdev, request_data_sz,
1506 request_data, request_data_dma);
1507
1508 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1509 return rc;
1510 }
1511
1512 /**
1513 * mpt2sas_enable_diag_buffer - enabling diag_buffers support driver load time
1514 * @ioc: per adapter object
1515 * @bits_to_register: bitwise field where trace is bit 0, and snapshot is bit 1
1516 *
1517 * This is called when command line option diag_buffer_enable is enabled
1518 * at driver load time.
1519 */
1520 void
1521 mpt2sas_enable_diag_buffer(struct MPT2SAS_ADAPTER *ioc, u8 bits_to_register)
1522 {
1523 struct mpt2_diag_register diag_register;
1524
1525 memset(&diag_register, 0, sizeof(struct mpt2_diag_register));
1526
1527 if (bits_to_register & 1) {
1528 printk(MPT2SAS_INFO_FMT "registering trace buffer support\n",
1529 ioc->name);
1530 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
1531 /* register for 1MB buffers */
1532 diag_register.requested_buffer_size = (1024 * 1024);
1533 diag_register.unique_id = 0x7075900;
1534 _ctl_diag_register_2(ioc, &diag_register);
1535 }
1536
1537 if (bits_to_register & 2) {
1538 printk(MPT2SAS_INFO_FMT "registering snapshot buffer support\n",
1539 ioc->name);
1540 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT;
1541 /* register for 2MB buffers */
1542 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1543 diag_register.unique_id = 0x7075901;
1544 _ctl_diag_register_2(ioc, &diag_register);
1545 }
1546
1547 if (bits_to_register & 4) {
1548 printk(MPT2SAS_INFO_FMT "registering extended buffer support\n",
1549 ioc->name);
1550 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_EXTENDED;
1551 /* register for 2MB buffers */
1552 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1553 diag_register.unique_id = 0x7075901;
1554 _ctl_diag_register_2(ioc, &diag_register);
1555 }
1556 }
1557
1558 /**
1559 * _ctl_diag_register - application register with driver
1560 * @ioc: per adapter object
1561 * @arg - user space buffer containing ioctl content
1562 *
1563 * This will allow the driver to setup any required buffers that will be
1564 * needed by firmware to communicate with the driver.
1565 */
1566 static long
1567 _ctl_diag_register(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1568 {
1569 struct mpt2_diag_register karg;
1570 long rc;
1571
1572 if (copy_from_user(&karg, arg, sizeof(karg))) {
1573 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1574 __FILE__, __LINE__, __func__);
1575 return -EFAULT;
1576 }
1577
1578 rc = _ctl_diag_register_2(ioc, &karg);
1579 return rc;
1580 }
1581
1582 /**
1583 * _ctl_diag_unregister - application unregister with driver
1584 * @ioc: per adapter object
1585 * @arg - user space buffer containing ioctl content
1586 *
1587 * This will allow the driver to cleanup any memory allocated for diag
1588 * messages and to free up any resources.
1589 */
1590 static long
1591 _ctl_diag_unregister(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1592 {
1593 struct mpt2_diag_unregister karg;
1594 void *request_data;
1595 dma_addr_t request_data_dma;
1596 u32 request_data_sz;
1597 u8 buffer_type;
1598
1599 if (copy_from_user(&karg, arg, sizeof(karg))) {
1600 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1601 __FILE__, __LINE__, __func__);
1602 return -EFAULT;
1603 }
1604
1605 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1606 __func__));
1607
1608 buffer_type = karg.unique_id & 0x000000ff;
1609 if (!_ctl_diag_capability(ioc, buffer_type)) {
1610 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1611 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1612 return -EPERM;
1613 }
1614
1615 if ((ioc->diag_buffer_status[buffer_type] &
1616 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1617 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1618 "registered\n", ioc->name, __func__, buffer_type);
1619 return -EINVAL;
1620 }
1621 if ((ioc->diag_buffer_status[buffer_type] &
1622 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
1623 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) has not been "
1624 "released\n", ioc->name, __func__, buffer_type);
1625 return -EINVAL;
1626 }
1627
1628 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1629 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1630 "registered\n", ioc->name, __func__, karg.unique_id);
1631 return -EINVAL;
1632 }
1633
1634 request_data = ioc->diag_buffer[buffer_type];
1635 if (!request_data) {
1636 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1637 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1638 return -ENOMEM;
1639 }
1640
1641 request_data_sz = ioc->diag_buffer_sz[buffer_type];
1642 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1643 pci_free_consistent(ioc->pdev, request_data_sz,
1644 request_data, request_data_dma);
1645 ioc->diag_buffer[buffer_type] = NULL;
1646 ioc->diag_buffer_status[buffer_type] = 0;
1647 return 0;
1648 }
1649
1650 /**
1651 * _ctl_diag_query - query relevant info associated with diag buffers
1652 * @ioc: per adapter object
1653 * @arg - user space buffer containing ioctl content
1654 *
1655 * The application will send only buffer_type and unique_id. Driver will
1656 * inspect unique_id first, if valid, fill in all the info. If unique_id is
1657 * 0x00, the driver will return info specified by Buffer Type.
1658 */
1659 static long
1660 _ctl_diag_query(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1661 {
1662 struct mpt2_diag_query karg;
1663 void *request_data;
1664 int i;
1665 u8 buffer_type;
1666
1667 if (copy_from_user(&karg, arg, sizeof(karg))) {
1668 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1669 __FILE__, __LINE__, __func__);
1670 return -EFAULT;
1671 }
1672
1673 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1674 __func__));
1675
1676 karg.application_flags = 0;
1677 buffer_type = karg.buffer_type;
1678
1679 if (!_ctl_diag_capability(ioc, buffer_type)) {
1680 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1681 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1682 return -EPERM;
1683 }
1684
1685 if ((ioc->diag_buffer_status[buffer_type] &
1686 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1687 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1688 "registered\n", ioc->name, __func__, buffer_type);
1689 return -EINVAL;
1690 }
1691
1692 if (karg.unique_id & 0xffffff00) {
1693 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1694 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1695 "registered\n", ioc->name, __func__,
1696 karg.unique_id);
1697 return -EINVAL;
1698 }
1699 }
1700
1701 request_data = ioc->diag_buffer[buffer_type];
1702 if (!request_data) {
1703 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1704 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1705 return -ENOMEM;
1706 }
1707
1708 if (ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_RELEASED)
1709 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1710 MPT2_APP_FLAGS_BUFFER_VALID);
1711 else
1712 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1713 MPT2_APP_FLAGS_BUFFER_VALID |
1714 MPT2_APP_FLAGS_FW_BUFFER_ACCESS);
1715
1716 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1717 karg.product_specific[i] =
1718 ioc->product_specific[buffer_type][i];
1719
1720 karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
1721 karg.driver_added_buffer_size = 0;
1722 karg.unique_id = ioc->unique_id[buffer_type];
1723 karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];
1724
1725 if (copy_to_user(arg, &karg, sizeof(struct mpt2_diag_query))) {
1726 printk(MPT2SAS_ERR_FMT "%s: unable to write mpt2_diag_query "
1727 "data @ %p\n", ioc->name, __func__, arg);
1728 return -EFAULT;
1729 }
1730 return 0;
1731 }
1732
1733 /**
1734 * _ctl_send_release - Diag Release Message
1735 * @ioc: per adapter object
1736 * @buffer_type - specifies either TRACE, SNAPSHOT, or EXTENDED
1737 * @issue_reset - specifies whether host reset is required.
1738 *
1739 */
1740 static int
1741 _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type, u8 *issue_reset)
1742 {
1743 Mpi2DiagReleaseRequest_t *mpi_request;
1744 Mpi2DiagReleaseReply_t *mpi_reply;
1745 u16 smid;
1746 u16 ioc_status;
1747 u32 ioc_state;
1748 int rc;
1749 unsigned long timeleft;
1750
1751 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1752 __func__));
1753
1754 rc = 0;
1755 *issue_reset = 0;
1756
1757 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1758 if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1759 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
1760 "skipping due to FAULT state\n", ioc->name,
1761 __func__));
1762 rc = -EAGAIN;
1763 goto out;
1764 }
1765
1766 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1767 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1768 ioc->name, __func__);
1769 rc = -EAGAIN;
1770 goto out;
1771 }
1772
1773 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1774 if (!smid) {
1775 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1776 ioc->name, __func__);
1777 rc = -EAGAIN;
1778 goto out;
1779 }
1780
1781 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1782 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1783 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1784 ioc->ctl_cmds.smid = smid;
1785
1786 mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
1787 mpi_request->BufferType = buffer_type;
1788 mpi_request->VF_ID = 0; /* TODO */
1789 mpi_request->VP_ID = 0;
1790
1791 init_completion(&ioc->ctl_cmds.done);
1792 mpt2sas_base_put_smid_default(ioc, smid);
1793 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1794 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1795
1796 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1797 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1798 __func__);
1799 _debug_dump_mf(mpi_request,
1800 sizeof(Mpi2DiagReleaseRequest_t)/4);
1801 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1802 *issue_reset = 1;
1803 rc = -EFAULT;
1804 goto out;
1805 }
1806
1807 /* process the completed Reply Message Frame */
1808 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1809 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1810 ioc->name, __func__);
1811 rc = -EFAULT;
1812 goto out;
1813 }
1814
1815 mpi_reply = ioc->ctl_cmds.reply;
1816 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1817
1818 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1819 ioc->diag_buffer_status[buffer_type] |=
1820 MPT2_DIAG_BUFFER_IS_RELEASED;
1821 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
1822 ioc->name, __func__));
1823 } else {
1824 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
1825 "log_info(0x%08x)\n", ioc->name, __func__,
1826 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1827 rc = -EFAULT;
1828 }
1829
1830 out:
1831 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1832 return rc;
1833 }
1834
1835 /**
1836 * _ctl_diag_release - request to send Diag Release Message to firmware
1837 * @arg - user space buffer containing ioctl content
1838 *
1839 * This allows ownership of the specified buffer to returned to the driver,
1840 * allowing an application to read the buffer without fear that firmware is
1841 * overwritting information in the buffer.
1842 */
1843 static long
1844 _ctl_diag_release(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1845 {
1846 struct mpt2_diag_release karg;
1847 void *request_data;
1848 int rc;
1849 u8 buffer_type;
1850 u8 issue_reset = 0;
1851
1852 if (copy_from_user(&karg, arg, sizeof(karg))) {
1853 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1854 __FILE__, __LINE__, __func__);
1855 return -EFAULT;
1856 }
1857
1858 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1859 __func__));
1860
1861 buffer_type = karg.unique_id & 0x000000ff;
1862 if (!_ctl_diag_capability(ioc, buffer_type)) {
1863 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1864 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1865 return -EPERM;
1866 }
1867
1868 if ((ioc->diag_buffer_status[buffer_type] &
1869 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1870 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1871 "registered\n", ioc->name, __func__, buffer_type);
1872 return -EINVAL;
1873 }
1874
1875 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1876 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1877 "registered\n", ioc->name, __func__, karg.unique_id);
1878 return -EINVAL;
1879 }
1880
1881 if (ioc->diag_buffer_status[buffer_type] &
1882 MPT2_DIAG_BUFFER_IS_RELEASED) {
1883 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1884 "is already released\n", ioc->name, __func__,
1885 buffer_type);
1886 return 0;
1887 }
1888
1889 request_data = ioc->diag_buffer[buffer_type];
1890
1891 if (!request_data) {
1892 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1893 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1894 return -ENOMEM;
1895 }
1896
1897 /* buffers were released by due to host reset */
1898 if ((ioc->diag_buffer_status[buffer_type] &
1899 MPT2_DIAG_BUFFER_IS_DIAG_RESET)) {
1900 ioc->diag_buffer_status[buffer_type] |=
1901 MPT2_DIAG_BUFFER_IS_RELEASED;
1902 ioc->diag_buffer_status[buffer_type] &=
1903 ~MPT2_DIAG_BUFFER_IS_DIAG_RESET;
1904 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1905 "was released due to host reset\n", ioc->name, __func__,
1906 buffer_type);
1907 return 0;
1908 }
1909
1910 rc = _ctl_send_release(ioc, buffer_type, &issue_reset);
1911
1912 if (issue_reset)
1913 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1914 FORCE_BIG_HAMMER);
1915
1916 return rc;
1917 }
1918
1919 /**
1920 * _ctl_diag_read_buffer - request for copy of the diag buffer
1921 * @ioc: per adapter object
1922 * @arg - user space buffer containing ioctl content
1923 */
1924 static long
1925 _ctl_diag_read_buffer(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1926 {
1927 struct mpt2_diag_read_buffer karg;
1928 struct mpt2_diag_read_buffer __user *uarg = arg;
1929 void *request_data, *diag_data;
1930 Mpi2DiagBufferPostRequest_t *mpi_request;
1931 Mpi2DiagBufferPostReply_t *mpi_reply;
1932 int rc, i;
1933 u8 buffer_type;
1934 unsigned long timeleft, request_size, copy_size;
1935 u16 smid;
1936 u16 ioc_status;
1937 u8 issue_reset = 0;
1938
1939 if (copy_from_user(&karg, arg, sizeof(karg))) {
1940 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1941 __FILE__, __LINE__, __func__);
1942 return -EFAULT;
1943 }
1944
1945 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1946 __func__));
1947
1948 buffer_type = karg.unique_id & 0x000000ff;
1949 if (!_ctl_diag_capability(ioc, buffer_type)) {
1950 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1951 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1952 return -EPERM;
1953 }
1954
1955 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1956 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1957 "registered\n", ioc->name, __func__, karg.unique_id);
1958 return -EINVAL;
1959 }
1960
1961 request_data = ioc->diag_buffer[buffer_type];
1962 if (!request_data) {
1963 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1964 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1965 return -ENOMEM;
1966 }
1967
1968 request_size = ioc->diag_buffer_sz[buffer_type];
1969
1970 if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
1971 printk(MPT2SAS_ERR_FMT "%s: either the starting_offset "
1972 "or bytes_to_read are not 4 byte aligned\n", ioc->name,
1973 __func__);
1974 return -EINVAL;
1975 }
1976
1977 if (karg.starting_offset > request_size)
1978 return -EINVAL;
1979
1980 diag_data = (void *)(request_data + karg.starting_offset);
1981 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: diag_buffer(%p), "
1982 "offset(%d), sz(%d)\n", ioc->name, __func__,
1983 diag_data, karg.starting_offset, karg.bytes_to_read));
1984
1985 /* Truncate data on requests that are too large */
1986 if ((diag_data + karg.bytes_to_read < diag_data) ||
1987 (diag_data + karg.bytes_to_read > request_data + request_size))
1988 copy_size = request_size - karg.starting_offset;
1989 else
1990 copy_size = karg.bytes_to_read;
1991
1992 if (copy_to_user((void __user *)uarg->diagnostic_data,
1993 diag_data, copy_size)) {
1994 printk(MPT2SAS_ERR_FMT "%s: Unable to write "
1995 "mpt_diag_read_buffer_t data @ %p\n", ioc->name,
1996 __func__, diag_data);
1997 return -EFAULT;
1998 }
1999
2000 if ((karg.flags & MPT2_FLAGS_REREGISTER) == 0)
2001 return 0;
2002
2003 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: Reregister "
2004 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type));
2005 if ((ioc->diag_buffer_status[buffer_type] &
2006 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
2007 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2008 "buffer_type(0x%02x) is still registered\n", ioc->name,
2009 __func__, buffer_type));
2010 return 0;
2011 }
2012 /* Get a free request frame and save the message context.
2013 */
2014
2015 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
2016 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
2017 ioc->name, __func__);
2018 rc = -EAGAIN;
2019 goto out;
2020 }
2021
2022 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
2023 if (!smid) {
2024 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2025 ioc->name, __func__);
2026 rc = -EAGAIN;
2027 goto out;
2028 }
2029
2030 rc = 0;
2031 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
2032 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
2033 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
2034 ioc->ctl_cmds.smid = smid;
2035
2036 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
2037 mpi_request->BufferType = buffer_type;
2038 mpi_request->BufferLength =
2039 cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
2040 mpi_request->BufferAddress =
2041 cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
2042 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
2043 mpi_request->ProductSpecific[i] =
2044 cpu_to_le32(ioc->product_specific[buffer_type][i]);
2045 mpi_request->VF_ID = 0; /* TODO */
2046 mpi_request->VP_ID = 0;
2047
2048 init_completion(&ioc->ctl_cmds.done);
2049 mpt2sas_base_put_smid_default(ioc, smid);
2050 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
2051 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
2052
2053 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
2054 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
2055 __func__);
2056 _debug_dump_mf(mpi_request,
2057 sizeof(Mpi2DiagBufferPostRequest_t)/4);
2058 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
2059 issue_reset = 1;
2060 goto issue_host_reset;
2061 }
2062
2063 /* process the completed Reply Message Frame */
2064 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
2065 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
2066 ioc->name, __func__);
2067 rc = -EFAULT;
2068 goto out;
2069 }
2070
2071 mpi_reply = ioc->ctl_cmds.reply;
2072 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
2073
2074 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
2075 ioc->diag_buffer_status[buffer_type] |=
2076 MPT2_DIAG_BUFFER_IS_REGISTERED;
2077 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
2078 ioc->name, __func__));
2079 } else {
2080 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
2081 "log_info(0x%08x)\n", ioc->name, __func__,
2082 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
2083 rc = -EFAULT;
2084 }
2085
2086 issue_host_reset:
2087 if (issue_reset)
2088 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2089 FORCE_BIG_HAMMER);
2090
2091 out:
2092
2093 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
2094 return rc;
2095 }
2096
2097
2098 #ifdef CONFIG_COMPAT
2099 /**
2100 * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
2101 * @ioc: per adapter object
2102 * @cmd - ioctl opcode
2103 * @arg - (struct mpt2_ioctl_command32)
2104 *
2105 * MPT2COMMAND32 - Handle 32bit applications running on 64bit os.
2106 */
2107 static long
2108 _ctl_compat_mpt_command(struct MPT2SAS_ADAPTER *ioc, unsigned cmd,
2109 void __user *arg)
2110 {
2111 struct mpt2_ioctl_command32 karg32;
2112 struct mpt2_ioctl_command32 __user *uarg;
2113 struct mpt2_ioctl_command karg;
2114
2115 if (_IOC_SIZE(cmd) != sizeof(struct mpt2_ioctl_command32))
2116 return -EINVAL;
2117
2118 uarg = (struct mpt2_ioctl_command32 __user *) arg;
2119
2120 if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
2121 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2122 __FILE__, __LINE__, __func__);
2123 return -EFAULT;
2124 }
2125
2126 memset(&karg, 0, sizeof(struct mpt2_ioctl_command));
2127 karg.hdr.ioc_number = karg32.hdr.ioc_number;
2128 karg.hdr.port_number = karg32.hdr.port_number;
2129 karg.hdr.max_data_size = karg32.hdr.max_data_size;
2130 karg.timeout = karg32.timeout;
2131 karg.max_reply_bytes = karg32.max_reply_bytes;
2132 karg.data_in_size = karg32.data_in_size;
2133 karg.data_out_size = karg32.data_out_size;
2134 karg.max_sense_bytes = karg32.max_sense_bytes;
2135 karg.data_sge_offset = karg32.data_sge_offset;
2136 karg.reply_frame_buf_ptr = compat_ptr(karg32.reply_frame_buf_ptr);
2137 karg.data_in_buf_ptr = compat_ptr(karg32.data_in_buf_ptr);
2138 karg.data_out_buf_ptr = compat_ptr(karg32.data_out_buf_ptr);
2139 karg.sense_data_ptr = compat_ptr(karg32.sense_data_ptr);
2140 return _ctl_do_mpt_command(ioc, karg, &uarg->mf);
2141 }
2142 #endif
2143
2144 /**
2145 * _ctl_ioctl_main - main ioctl entry point
2146 * @file - (struct file)
2147 * @cmd - ioctl opcode
2148 * @arg -
2149 * compat - handles 32 bit applications in 64bit os
2150 */
2151 static long
2152 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg,
2153 u8 compat)
2154 {
2155 struct MPT2SAS_ADAPTER *ioc;
2156 struct mpt2_ioctl_header ioctl_header;
2157 enum block_state state;
2158 long ret = -EINVAL;
2159
2160 /* get IOCTL header */
2161 if (copy_from_user(&ioctl_header, (char __user *)arg,
2162 sizeof(struct mpt2_ioctl_header))) {
2163 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2164 __FILE__, __LINE__, __func__);
2165 return -EFAULT;
2166 }
2167
2168 if (_ctl_verify_adapter(ioctl_header.ioc_number, &ioc) == -1 || !ioc)
2169 return -ENODEV;
2170 if (ioc->shost_recovery || ioc->pci_error_recovery ||
2171 ioc->is_driver_loading)
2172 return -EAGAIN;
2173
2174 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
2175 if (state == NON_BLOCKING) {
2176 if (!mutex_trylock(&ioc->ctl_cmds.mutex))
2177 return -EAGAIN;
2178 } else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex)) {
2179 return -ERESTARTSYS;
2180 }
2181
2182 switch (cmd) {
2183 case MPT2IOCINFO:
2184 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_iocinfo))
2185 ret = _ctl_getiocinfo(ioc, arg);
2186 break;
2187 #ifdef CONFIG_COMPAT
2188 case MPT2COMMAND32:
2189 #endif
2190 case MPT2COMMAND:
2191 {
2192 struct mpt2_ioctl_command __user *uarg;
2193 struct mpt2_ioctl_command karg;
2194 #ifdef CONFIG_COMPAT
2195 if (compat) {
2196 ret = _ctl_compat_mpt_command(ioc, cmd, arg);
2197 break;
2198 }
2199 #endif
2200 if (copy_from_user(&karg, arg, sizeof(karg))) {
2201 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2202 __FILE__, __LINE__, __func__);
2203 ret = -EFAULT;
2204 break;
2205 }
2206
2207 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_command)) {
2208 uarg = arg;
2209 ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf);
2210 }
2211 break;
2212 }
2213 case MPT2EVENTQUERY:
2214 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventquery))
2215 ret = _ctl_eventquery(ioc, arg);
2216 break;
2217 case MPT2EVENTENABLE:
2218 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventenable))
2219 ret = _ctl_eventenable(ioc, arg);
2220 break;
2221 case MPT2EVENTREPORT:
2222 ret = _ctl_eventreport(ioc, arg);
2223 break;
2224 case MPT2HARDRESET:
2225 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_diag_reset))
2226 ret = _ctl_do_reset(ioc, arg);
2227 break;
2228 case MPT2BTDHMAPPING:
2229 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_btdh_mapping))
2230 ret = _ctl_btdh_mapping(ioc, arg);
2231 break;
2232 case MPT2DIAGREGISTER:
2233 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_register))
2234 ret = _ctl_diag_register(ioc, arg);
2235 break;
2236 case MPT2DIAGUNREGISTER:
2237 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_unregister))
2238 ret = _ctl_diag_unregister(ioc, arg);
2239 break;
2240 case MPT2DIAGQUERY:
2241 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_query))
2242 ret = _ctl_diag_query(ioc, arg);
2243 break;
2244 case MPT2DIAGRELEASE:
2245 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_release))
2246 ret = _ctl_diag_release(ioc, arg);
2247 break;
2248 case MPT2DIAGREADBUFFER:
2249 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_read_buffer))
2250 ret = _ctl_diag_read_buffer(ioc, arg);
2251 break;
2252 default:
2253
2254 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT
2255 "unsupported ioctl opcode(0x%08x)\n", ioc->name, cmd));
2256 break;
2257 }
2258
2259 mutex_unlock(&ioc->ctl_cmds.mutex);
2260 return ret;
2261 }
2262
2263 /**
2264 * _ctl_ioctl - main ioctl entry point (unlocked)
2265 * @file - (struct file)
2266 * @cmd - ioctl opcode
2267 * @arg -
2268 */
2269 static long
2270 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2271 {
2272 long ret;
2273
2274 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0);
2275 return ret;
2276 }
2277 #ifdef CONFIG_COMPAT
2278 /**
2279 * _ctl_ioctl_compat - main ioctl entry point (compat)
2280 * @file -
2281 * @cmd -
2282 * @arg -
2283 *
2284 * This routine handles 32 bit applications in 64bit os.
2285 */
2286 static long
2287 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2288 {
2289 long ret;
2290
2291 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1);
2292 return ret;
2293 }
2294 #endif
2295
2296 /* scsi host attributes */
2297
2298 /**
2299 * _ctl_version_fw_show - firmware version
2300 * @cdev - pointer to embedded class device
2301 * @buf - the buffer returned
2302 *
2303 * A sysfs 'read-only' shost attribute.
2304 */
2305 static ssize_t
2306 _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr,
2307 char *buf)
2308 {
2309 struct Scsi_Host *shost = class_to_shost(cdev);
2310 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2311
2312 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2313 (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2314 (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2315 (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2316 ioc->facts.FWVersion.Word & 0x000000FF);
2317 }
2318 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL);
2319
2320 /**
2321 * _ctl_version_bios_show - bios version
2322 * @cdev - pointer to embedded class device
2323 * @buf - the buffer returned
2324 *
2325 * A sysfs 'read-only' shost attribute.
2326 */
2327 static ssize_t
2328 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr,
2329 char *buf)
2330 {
2331 struct Scsi_Host *shost = class_to_shost(cdev);
2332 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2333
2334 u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2335
2336 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2337 (version & 0xFF000000) >> 24,
2338 (version & 0x00FF0000) >> 16,
2339 (version & 0x0000FF00) >> 8,
2340 version & 0x000000FF);
2341 }
2342 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL);
2343
2344 /**
2345 * _ctl_version_mpi_show - MPI (message passing interface) version
2346 * @cdev - pointer to embedded class device
2347 * @buf - the buffer returned
2348 *
2349 * A sysfs 'read-only' shost attribute.
2350 */
2351 static ssize_t
2352 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr,
2353 char *buf)
2354 {
2355 struct Scsi_Host *shost = class_to_shost(cdev);
2356 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2357
2358 return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
2359 ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
2360 }
2361 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL);
2362
2363 /**
2364 * _ctl_version_product_show - product name
2365 * @cdev - pointer to embedded class device
2366 * @buf - the buffer returned
2367 *
2368 * A sysfs 'read-only' shost attribute.
2369 */
2370 static ssize_t
2371 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr,
2372 char *buf)
2373 {
2374 struct Scsi_Host *shost = class_to_shost(cdev);
2375 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2376
2377 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
2378 }
2379 static DEVICE_ATTR(version_product, S_IRUGO,
2380 _ctl_version_product_show, NULL);
2381
2382 /**
2383 * _ctl_version_nvdata_persistent_show - ndvata persistent version
2384 * @cdev - pointer to embedded class device
2385 * @buf - the buffer returned
2386 *
2387 * A sysfs 'read-only' shost attribute.
2388 */
2389 static ssize_t
2390 _ctl_version_nvdata_persistent_show(struct device *cdev,
2391 struct device_attribute *attr, char *buf)
2392 {
2393 struct Scsi_Host *shost = class_to_shost(cdev);
2394 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2395
2396 return snprintf(buf, PAGE_SIZE, "%08xh\n",
2397 le32_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
2398 }
2399 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
2400 _ctl_version_nvdata_persistent_show, NULL);
2401
2402 /**
2403 * _ctl_version_nvdata_default_show - nvdata default version
2404 * @cdev - pointer to embedded class device
2405 * @buf - the buffer returned
2406 *
2407 * A sysfs 'read-only' shost attribute.
2408 */
2409 static ssize_t
2410 _ctl_version_nvdata_default_show(struct device *cdev,
2411 struct device_attribute *attr, char *buf)
2412 {
2413 struct Scsi_Host *shost = class_to_shost(cdev);
2414 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2415
2416 return snprintf(buf, PAGE_SIZE, "%08xh\n",
2417 le32_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
2418 }
2419 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
2420 _ctl_version_nvdata_default_show, NULL);
2421
2422 /**
2423 * _ctl_board_name_show - board name
2424 * @cdev - pointer to embedded class device
2425 * @buf - the buffer returned
2426 *
2427 * A sysfs 'read-only' shost attribute.
2428 */
2429 static ssize_t
2430 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr,
2431 char *buf)
2432 {
2433 struct Scsi_Host *shost = class_to_shost(cdev);
2434 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2435
2436 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
2437 }
2438 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL);
2439
2440 /**
2441 * _ctl_board_assembly_show - board assembly name
2442 * @cdev - pointer to embedded class device
2443 * @buf - the buffer returned
2444 *
2445 * A sysfs 'read-only' shost attribute.
2446 */
2447 static ssize_t
2448 _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr,
2449 char *buf)
2450 {
2451 struct Scsi_Host *shost = class_to_shost(cdev);
2452 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2453
2454 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
2455 }
2456 static DEVICE_ATTR(board_assembly, S_IRUGO,
2457 _ctl_board_assembly_show, NULL);
2458
2459 /**
2460 * _ctl_board_tracer_show - board tracer number
2461 * @cdev - pointer to embedded class device
2462 * @buf - the buffer returned
2463 *
2464 * A sysfs 'read-only' shost attribute.
2465 */
2466 static ssize_t
2467 _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr,
2468 char *buf)
2469 {
2470 struct Scsi_Host *shost = class_to_shost(cdev);
2471 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2472
2473 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
2474 }
2475 static DEVICE_ATTR(board_tracer, S_IRUGO,
2476 _ctl_board_tracer_show, NULL);
2477
2478 /**
2479 * _ctl_io_delay_show - io missing delay
2480 * @cdev - pointer to embedded class device
2481 * @buf - the buffer returned
2482 *
2483 * This is for firmware implemention for deboucing device
2484 * removal events.
2485 *
2486 * A sysfs 'read-only' shost attribute.
2487 */
2488 static ssize_t
2489 _ctl_io_delay_show(struct device *cdev, struct device_attribute *attr,
2490 char *buf)
2491 {
2492 struct Scsi_Host *shost = class_to_shost(cdev);
2493 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2494
2495 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
2496 }
2497 static DEVICE_ATTR(io_delay, S_IRUGO,
2498 _ctl_io_delay_show, NULL);
2499
2500 /**
2501 * _ctl_device_delay_show - device missing delay
2502 * @cdev - pointer to embedded class device
2503 * @buf - the buffer returned
2504 *
2505 * This is for firmware implemention for deboucing device
2506 * removal events.
2507 *
2508 * A sysfs 'read-only' shost attribute.
2509 */
2510 static ssize_t
2511 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr,
2512 char *buf)
2513 {
2514 struct Scsi_Host *shost = class_to_shost(cdev);
2515 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2516
2517 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
2518 }
2519 static DEVICE_ATTR(device_delay, S_IRUGO,
2520 _ctl_device_delay_show, NULL);
2521
2522 /**
2523 * _ctl_fw_queue_depth_show - global credits
2524 * @cdev - pointer to embedded class device
2525 * @buf - the buffer returned
2526 *
2527 * This is firmware queue depth limit
2528 *
2529 * A sysfs 'read-only' shost attribute.
2530 */
2531 static ssize_t
2532 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
2533 char *buf)
2534 {
2535 struct Scsi_Host *shost = class_to_shost(cdev);
2536 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2537
2538 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
2539 }
2540 static DEVICE_ATTR(fw_queue_depth, S_IRUGO,
2541 _ctl_fw_queue_depth_show, NULL);
2542
2543 /**
2544 * _ctl_sas_address_show - sas address
2545 * @cdev - pointer to embedded class device
2546 * @buf - the buffer returned
2547 *
2548 * This is the controller sas address
2549 *
2550 * A sysfs 'read-only' shost attribute.
2551 */
2552 static ssize_t
2553 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr,
2554 char *buf)
2555 {
2556 struct Scsi_Host *shost = class_to_shost(cdev);
2557 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2558
2559 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2560 (unsigned long long)ioc->sas_hba.sas_address);
2561 }
2562 static DEVICE_ATTR(host_sas_address, S_IRUGO,
2563 _ctl_host_sas_address_show, NULL);
2564
2565 /**
2566 * _ctl_logging_level_show - logging level
2567 * @cdev - pointer to embedded class device
2568 * @buf - the buffer returned
2569 *
2570 * A sysfs 'read/write' shost attribute.
2571 */
2572 static ssize_t
2573 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr,
2574 char *buf)
2575 {
2576 struct Scsi_Host *shost = class_to_shost(cdev);
2577 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2578
2579 return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
2580 }
2581 static ssize_t
2582 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr,
2583 const char *buf, size_t count)
2584 {
2585 struct Scsi_Host *shost = class_to_shost(cdev);
2586 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2587 int val = 0;
2588
2589 if (sscanf(buf, "%x", &val) != 1)
2590 return -EINVAL;
2591
2592 ioc->logging_level = val;
2593 printk(MPT2SAS_INFO_FMT "logging_level=%08xh\n", ioc->name,
2594 ioc->logging_level);
2595 return strlen(buf);
2596 }
2597 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
2598 _ctl_logging_level_show, _ctl_logging_level_store);
2599
2600 /* device attributes */
2601 /*
2602 * _ctl_fwfault_debug_show - show/store fwfault_debug
2603 * @cdev - pointer to embedded class device
2604 * @buf - the buffer returned
2605 *
2606 * mpt2sas_fwfault_debug is command line option
2607 * A sysfs 'read/write' shost attribute.
2608 */
2609 static ssize_t
2610 _ctl_fwfault_debug_show(struct device *cdev,
2611 struct device_attribute *attr, char *buf)
2612 {
2613 struct Scsi_Host *shost = class_to_shost(cdev);
2614 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2615
2616 return snprintf(buf, PAGE_SIZE, "%d\n", ioc->fwfault_debug);
2617 }
2618 static ssize_t
2619 _ctl_fwfault_debug_store(struct device *cdev,
2620 struct device_attribute *attr, const char *buf, size_t count)
2621 {
2622 struct Scsi_Host *shost = class_to_shost(cdev);
2623 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2624 int val = 0;
2625
2626 if (sscanf(buf, "%d", &val) != 1)
2627 return -EINVAL;
2628
2629 ioc->fwfault_debug = val;
2630 printk(MPT2SAS_INFO_FMT "fwfault_debug=%d\n", ioc->name,
2631 ioc->fwfault_debug);
2632 return strlen(buf);
2633 }
2634 static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR,
2635 _ctl_fwfault_debug_show, _ctl_fwfault_debug_store);
2636
2637
2638 /**
2639 * _ctl_ioc_reset_count_show - ioc reset count
2640 * @cdev - pointer to embedded class device
2641 * @buf - the buffer returned
2642 *
2643 * This is firmware queue depth limit
2644 *
2645 * A sysfs 'read-only' shost attribute.
2646 */
2647 static ssize_t
2648 _ctl_ioc_reset_count_show(struct device *cdev, struct device_attribute *attr,
2649 char *buf)
2650 {
2651 struct Scsi_Host *shost = class_to_shost(cdev);
2652 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2653
2654 return snprintf(buf, PAGE_SIZE, "%08d\n", ioc->ioc_reset_count);
2655 }
2656 static DEVICE_ATTR(ioc_reset_count, S_IRUGO,
2657 _ctl_ioc_reset_count_show, NULL);
2658
2659 /**
2660 * _ctl_ioc_reply_queue_count_show - number of reply queues
2661 * @cdev - pointer to embedded class device
2662 * @buf - the buffer returned
2663 *
2664 * This is number of reply queues
2665 *
2666 * A sysfs 'read-only' shost attribute.
2667 */
2668 static ssize_t
2669 _ctl_ioc_reply_queue_count_show(struct device *cdev,
2670 struct device_attribute *attr, char *buf)
2671 {
2672 u8 reply_queue_count;
2673 struct Scsi_Host *shost = class_to_shost(cdev);
2674 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2675
2676 if ((ioc->facts.IOCCapabilities &
2677 MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable)
2678 reply_queue_count = ioc->reply_queue_count;
2679 else
2680 reply_queue_count = 1;
2681 return snprintf(buf, PAGE_SIZE, "%d\n", reply_queue_count);
2682 }
2683 static DEVICE_ATTR(reply_queue_count, S_IRUGO,
2684 _ctl_ioc_reply_queue_count_show, NULL);
2685
2686 /**
2687 * _ctl_BRM_status_show - Backup Rail Monitor Status
2688 * @cdev - pointer to embedded class device
2689 * @buf - the buffer returned
2690 *
2691 * This is number of reply queues
2692 *
2693 * A sysfs 'read-only' shost attribute.
2694 */
2695 static ssize_t
2696 _ctl_BRM_status_show(struct device *cdev, struct device_attribute *attr,
2697 char *buf)
2698 {
2699 struct Scsi_Host *shost = class_to_shost(cdev);
2700 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2701 Mpi2IOUnitPage3_t *io_unit_pg3 = NULL;
2702 Mpi2ConfigReply_t mpi_reply;
2703 u16 backup_rail_monitor_status = 0;
2704 u16 ioc_status;
2705 int sz;
2706 ssize_t rc = 0;
2707
2708 if (!ioc->is_warpdrive) {
2709 printk(MPT2SAS_ERR_FMT "%s: BRM attribute is only for"\
2710 "warpdrive\n", ioc->name, __func__);
2711 goto out;
2712 }
2713
2714 /* allocate upto GPIOVal 36 entries */
2715 sz = offsetof(Mpi2IOUnitPage3_t, GPIOVal) + (sizeof(u16) * 36);
2716 io_unit_pg3 = kzalloc(sz, GFP_KERNEL);
2717 if (!io_unit_pg3) {
2718 printk(MPT2SAS_ERR_FMT "%s: failed allocating memory"\
2719 "for iounit_pg3: (%d) bytes\n", ioc->name, __func__, sz);
2720 goto out;
2721 }
2722
2723 if (mpt2sas_config_get_iounit_pg3(ioc, &mpi_reply, io_unit_pg3, sz) !=
2724 0) {
2725 printk(MPT2SAS_ERR_FMT
2726 "%s: failed reading iounit_pg3\n", ioc->name,
2727 __func__);
2728 goto out;
2729 }
2730
2731 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
2732 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2733 printk(MPT2SAS_ERR_FMT "%s: iounit_pg3 failed with"\
2734 "ioc_status(0x%04x)\n", ioc->name, __func__, ioc_status);
2735 goto out;
2736 }
2737
2738 if (io_unit_pg3->GPIOCount < 25) {
2739 printk(MPT2SAS_ERR_FMT "%s: iounit_pg3->GPIOCount less than"\
2740 "25 entries, detected (%d) entries\n", ioc->name, __func__,
2741 io_unit_pg3->GPIOCount);
2742 goto out;
2743 }
2744
2745 /* BRM status is in bit zero of GPIOVal[24] */
2746 backup_rail_monitor_status = le16_to_cpu(io_unit_pg3->GPIOVal[24]);
2747 rc = snprintf(buf, PAGE_SIZE, "%d\n", (backup_rail_monitor_status & 1));
2748
2749 out:
2750 kfree(io_unit_pg3);
2751 return rc;
2752 }
2753 static DEVICE_ATTR(BRM_status, S_IRUGO, _ctl_BRM_status_show, NULL);
2754
2755 struct DIAG_BUFFER_START {
2756 __le32 Size;
2757 __le32 DiagVersion;
2758 u8 BufferType;
2759 u8 Reserved[3];
2760 __le32 Reserved1;
2761 __le32 Reserved2;
2762 __le32 Reserved3;
2763 };
2764 /**
2765 * _ctl_host_trace_buffer_size_show - host buffer size (trace only)
2766 * @cdev - pointer to embedded class device
2767 * @buf - the buffer returned
2768 *
2769 * A sysfs 'read-only' shost attribute.
2770 */
2771 static ssize_t
2772 _ctl_host_trace_buffer_size_show(struct device *cdev,
2773 struct device_attribute *attr, char *buf)
2774 {
2775 struct Scsi_Host *shost = class_to_shost(cdev);
2776 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2777 u32 size = 0;
2778 struct DIAG_BUFFER_START *request_data;
2779
2780 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2781 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2782 "registered\n", ioc->name, __func__);
2783 return 0;
2784 }
2785
2786 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2787 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
2788 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2789 "registered\n", ioc->name, __func__);
2790 return 0;
2791 }
2792
2793 request_data = (struct DIAG_BUFFER_START *)
2794 ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE];
2795 if ((le32_to_cpu(request_data->DiagVersion) == 0x00000000 ||
2796 le32_to_cpu(request_data->DiagVersion) == 0x01000000) &&
2797 le32_to_cpu(request_data->Reserved3) == 0x4742444c)
2798 size = le32_to_cpu(request_data->Size);
2799
2800 ioc->ring_buffer_sz = size;
2801 return snprintf(buf, PAGE_SIZE, "%d\n", size);
2802 }
2803 static DEVICE_ATTR(host_trace_buffer_size, S_IRUGO,
2804 _ctl_host_trace_buffer_size_show, NULL);
2805
2806 /**
2807 * _ctl_host_trace_buffer_show - firmware ring buffer (trace only)
2808 * @cdev - pointer to embedded class device
2809 * @buf - the buffer returned
2810 *
2811 * A sysfs 'read/write' shost attribute.
2812 *
2813 * You will only be able to read 4k bytes of ring buffer at a time.
2814 * In order to read beyond 4k bytes, you will have to write out the
2815 * offset to the same attribute, it will move the pointer.
2816 */
2817 static ssize_t
2818 _ctl_host_trace_buffer_show(struct device *cdev, struct device_attribute *attr,
2819 char *buf)
2820 {
2821 struct Scsi_Host *shost = class_to_shost(cdev);
2822 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2823 void *request_data;
2824 u32 size;
2825
2826 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2827 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2828 "registered\n", ioc->name, __func__);
2829 return 0;
2830 }
2831
2832 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2833 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
2834 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2835 "registered\n", ioc->name, __func__);
2836 return 0;
2837 }
2838
2839 if (ioc->ring_buffer_offset > ioc->ring_buffer_sz)
2840 return 0;
2841
2842 size = ioc->ring_buffer_sz - ioc->ring_buffer_offset;
2843 size = (size > PAGE_SIZE) ? PAGE_SIZE : size;
2844 request_data = ioc->diag_buffer[0] + ioc->ring_buffer_offset;
2845 memcpy(buf, request_data, size);
2846 return size;
2847 }
2848
2849 static ssize_t
2850 _ctl_host_trace_buffer_store(struct device *cdev, struct device_attribute *attr,
2851 const char *buf, size_t count)
2852 {
2853 struct Scsi_Host *shost = class_to_shost(cdev);
2854 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2855 int val = 0;
2856
2857 if (sscanf(buf, "%d", &val) != 1)
2858 return -EINVAL;
2859
2860 ioc->ring_buffer_offset = val;
2861 return strlen(buf);
2862 }
2863 static DEVICE_ATTR(host_trace_buffer, S_IRUGO | S_IWUSR,
2864 _ctl_host_trace_buffer_show, _ctl_host_trace_buffer_store);
2865
2866 /*****************************************/
2867
2868 /**
2869 * _ctl_host_trace_buffer_enable_show - firmware ring buffer (trace only)
2870 * @cdev - pointer to embedded class device
2871 * @buf - the buffer returned
2872 *
2873 * A sysfs 'read/write' shost attribute.
2874 *
2875 * This is a mechnism to post/release host_trace_buffers
2876 */
2877 static ssize_t
2878 _ctl_host_trace_buffer_enable_show(struct device *cdev,
2879 struct device_attribute *attr, char *buf)
2880 {
2881 struct Scsi_Host *shost = class_to_shost(cdev);
2882 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2883
2884 if ((!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) ||
2885 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2886 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0))
2887 return snprintf(buf, PAGE_SIZE, "off\n");
2888 else if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2889 MPT2_DIAG_BUFFER_IS_RELEASED))
2890 return snprintf(buf, PAGE_SIZE, "release\n");
2891 else
2892 return snprintf(buf, PAGE_SIZE, "post\n");
2893 }
2894
2895 static ssize_t
2896 _ctl_host_trace_buffer_enable_store(struct device *cdev,
2897 struct device_attribute *attr, const char *buf, size_t count)
2898 {
2899 struct Scsi_Host *shost = class_to_shost(cdev);
2900 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2901 char str[10] = "";
2902 struct mpt2_diag_register diag_register;
2903 u8 issue_reset = 0;
2904
2905 if (sscanf(buf, "%9s", str) != 1)
2906 return -EINVAL;
2907
2908 if (!strcmp(str, "post")) {
2909 /* exit out if host buffers are already posted */
2910 if ((ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) &&
2911 (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2912 MPT2_DIAG_BUFFER_IS_REGISTERED) &&
2913 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2914 MPT2_DIAG_BUFFER_IS_RELEASED) == 0))
2915 goto out;
2916 memset(&diag_register, 0, sizeof(struct mpt2_diag_register));
2917 printk(MPT2SAS_INFO_FMT "posting host trace buffers\n",
2918 ioc->name);
2919 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
2920 diag_register.requested_buffer_size = (1024 * 1024);
2921 diag_register.unique_id = 0x7075900;
2922 ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] = 0;
2923 _ctl_diag_register_2(ioc, &diag_register);
2924 } else if (!strcmp(str, "release")) {
2925 /* exit out if host buffers are already released */
2926 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE])
2927 goto out;
2928 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2929 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0)
2930 goto out;
2931 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2932 MPT2_DIAG_BUFFER_IS_RELEASED))
2933 goto out;
2934 printk(MPT2SAS_INFO_FMT "releasing host trace buffer\n",
2935 ioc->name);
2936 _ctl_send_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE, &issue_reset);
2937 }
2938
2939 out:
2940 return strlen(buf);
2941 }
2942 static DEVICE_ATTR(host_trace_buffer_enable, S_IRUGO | S_IWUSR,
2943 _ctl_host_trace_buffer_enable_show, _ctl_host_trace_buffer_enable_store);
2944
2945 struct device_attribute *mpt2sas_host_attrs[] = {
2946 &dev_attr_version_fw,
2947 &dev_attr_version_bios,
2948 &dev_attr_version_mpi,
2949 &dev_attr_version_product,
2950 &dev_attr_version_nvdata_persistent,
2951 &dev_attr_version_nvdata_default,
2952 &dev_attr_board_name,
2953 &dev_attr_board_assembly,
2954 &dev_attr_board_tracer,
2955 &dev_attr_io_delay,
2956 &dev_attr_device_delay,
2957 &dev_attr_logging_level,
2958 &dev_attr_fwfault_debug,
2959 &dev_attr_fw_queue_depth,
2960 &dev_attr_host_sas_address,
2961 &dev_attr_ioc_reset_count,
2962 &dev_attr_host_trace_buffer_size,
2963 &dev_attr_host_trace_buffer,
2964 &dev_attr_host_trace_buffer_enable,
2965 &dev_attr_reply_queue_count,
2966 &dev_attr_BRM_status,
2967 NULL,
2968 };
2969
2970 /**
2971 * _ctl_device_sas_address_show - sas address
2972 * @cdev - pointer to embedded class device
2973 * @buf - the buffer returned
2974 *
2975 * This is the sas address for the target
2976 *
2977 * A sysfs 'read-only' shost attribute.
2978 */
2979 static ssize_t
2980 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr,
2981 char *buf)
2982 {
2983 struct scsi_device *sdev = to_scsi_device(dev);
2984 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2985
2986 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2987 (unsigned long long)sas_device_priv_data->sas_target->sas_address);
2988 }
2989 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL);
2990
2991 /**
2992 * _ctl_device_handle_show - device handle
2993 * @cdev - pointer to embedded class device
2994 * @buf - the buffer returned
2995 *
2996 * This is the firmware assigned device handle
2997 *
2998 * A sysfs 'read-only' shost attribute.
2999 */
3000 static ssize_t
3001 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr,
3002 char *buf)
3003 {
3004 struct scsi_device *sdev = to_scsi_device(dev);
3005 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3006
3007 return snprintf(buf, PAGE_SIZE, "0x%04x\n",
3008 sas_device_priv_data->sas_target->handle);
3009 }
3010 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL);
3011
3012 struct device_attribute *mpt2sas_dev_attrs[] = {
3013 &dev_attr_sas_address,
3014 &dev_attr_sas_device_handle,
3015 NULL,
3016 };
3017
3018 static const struct file_operations ctl_fops = {
3019 .owner = THIS_MODULE,
3020 .unlocked_ioctl = _ctl_ioctl,
3021 .poll = _ctl_poll,
3022 .fasync = _ctl_fasync,
3023 #ifdef CONFIG_COMPAT
3024 .compat_ioctl = _ctl_ioctl_compat,
3025 #endif
3026 .llseek = noop_llseek,
3027 };
3028
3029 static struct miscdevice ctl_dev = {
3030 .minor = MPT2SAS_MINOR,
3031 .name = MPT2SAS_DEV_NAME,
3032 .fops = &ctl_fops,
3033 };
3034
3035 /**
3036 * mpt2sas_ctl_init - main entry point for ctl.
3037 *
3038 */
3039 void
3040 mpt2sas_ctl_init(void)
3041 {
3042 async_queue = NULL;
3043 if (misc_register(&ctl_dev) < 0)
3044 printk(KERN_ERR "%s can't register misc device [minor=%d]\n",
3045 MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
3046
3047 init_waitqueue_head(&ctl_poll_wait);
3048 }
3049
3050 /**
3051 * mpt2sas_ctl_exit - exit point for ctl
3052 *
3053 */
3054 void
3055 mpt2sas_ctl_exit(void)
3056 {
3057 struct MPT2SAS_ADAPTER *ioc;
3058 int i;
3059
3060 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
3061
3062 /* free memory associated to diag buffers */
3063 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
3064 if (!ioc->diag_buffer[i])
3065 continue;
3066 pci_free_consistent(ioc->pdev, ioc->diag_buffer_sz[i],
3067 ioc->diag_buffer[i], ioc->diag_buffer_dma[i]);
3068 ioc->diag_buffer[i] = NULL;
3069 ioc->diag_buffer_status[i] = 0;
3070 }
3071
3072 kfree(ioc->event_log);
3073 }
3074 misc_deregister(&ctl_dev);
3075 }
3076
Linux with added FPC-III support