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437c2d94c45a0b89d782dfee28e8817bcedd481a
[deliverable/linux.git] / drivers / scsi / mpt2sas / mpt2sas_ctl.c
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) 2007-2010 LSI Corporation
7 * (mailto:DL-MPTFusionLinux@lsi.com)
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * NO WARRANTY
20 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
21 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
22 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
23 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
24 * solely responsible for determining the appropriateness of using and
25 * distributing the Program and assumes all risks associated with its
26 * exercise of rights under this Agreement, including but not limited to
27 * the risks and costs of program errors, damage to or loss of data,
28 * programs or equipment, and unavailability or interruption of operations.
29
30 * DISCLAIMER OF LIABILITY
31 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
32 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
34 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
35 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
36 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
37 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
38
39 * You should have received a copy of the GNU General Public License
40 * along with this program; if not, write to the Free Software
41 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
42 * USA.
43 */
44
45 #include <linux/version.h>
46 #include <linux/kernel.h>
47 #include <linux/module.h>
48 #include <linux/errno.h>
49 #include <linux/init.h>
50 #include <linux/slab.h>
51 #include <linux/types.h>
52 #include <linux/pci.h>
53 #include <linux/delay.h>
54 #include <linux/mutex.h>
55 #include <linux/compat.h>
56 #include <linux/poll.h>
57
58 #include <linux/io.h>
59 #include <linux/uaccess.h>
60
61 #include "mpt2sas_base.h"
62 #include "mpt2sas_ctl.h"
63
64 static DEFINE_MUTEX(_ctl_mutex);
65 static struct fasync_struct *async_queue;
66 static DECLARE_WAIT_QUEUE_HEAD(ctl_poll_wait);
67
68 static int _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type,
69 u8 *issue_reset);
70
71 /**
72 * enum block_state - blocking state
73 * @NON_BLOCKING: non blocking
74 * @BLOCKING: blocking
75 *
76 * These states are for ioctls that need to wait for a response
77 * from firmware, so they probably require sleep.
78 */
79 enum block_state {
80 NON_BLOCKING,
81 BLOCKING,
82 };
83
84 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
85 /**
86 * _ctl_sas_device_find_by_handle - sas device search
87 * @ioc: per adapter object
88 * @handle: sas device handle (assigned by firmware)
89 * Context: Calling function should acquire ioc->sas_device_lock
90 *
91 * This searches for sas_device based on sas_address, then return sas_device
92 * object.
93 */
94 static struct _sas_device *
95 _ctl_sas_device_find_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle)
96 {
97 struct _sas_device *sas_device, *r;
98
99 r = NULL;
100 list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
101 if (sas_device->handle != handle)
102 continue;
103 r = sas_device;
104 goto out;
105 }
106
107 out:
108 return r;
109 }
110
111 /**
112 * _ctl_display_some_debug - debug routine
113 * @ioc: per adapter object
114 * @smid: system request message index
115 * @calling_function_name: string pass from calling function
116 * @mpi_reply: reply message frame
117 * Context: none.
118 *
119 * Function for displaying debug info helpful when debugging issues
120 * in this module.
121 */
122 static void
123 _ctl_display_some_debug(struct MPT2SAS_ADAPTER *ioc, u16 smid,
124 char *calling_function_name, MPI2DefaultReply_t *mpi_reply)
125 {
126 Mpi2ConfigRequest_t *mpi_request;
127 char *desc = NULL;
128
129 if (!(ioc->logging_level & MPT_DEBUG_IOCTL))
130 return;
131
132 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
133 switch (mpi_request->Function) {
134 case MPI2_FUNCTION_SCSI_IO_REQUEST:
135 {
136 Mpi2SCSIIORequest_t *scsi_request =
137 (Mpi2SCSIIORequest_t *)mpi_request;
138
139 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
140 "scsi_io, cmd(0x%02x), cdb_len(%d)",
141 scsi_request->CDB.CDB32[0],
142 le16_to_cpu(scsi_request->IoFlags) & 0xF);
143 desc = ioc->tmp_string;
144 break;
145 }
146 case MPI2_FUNCTION_SCSI_TASK_MGMT:
147 desc = "task_mgmt";
148 break;
149 case MPI2_FUNCTION_IOC_INIT:
150 desc = "ioc_init";
151 break;
152 case MPI2_FUNCTION_IOC_FACTS:
153 desc = "ioc_facts";
154 break;
155 case MPI2_FUNCTION_CONFIG:
156 {
157 Mpi2ConfigRequest_t *config_request =
158 (Mpi2ConfigRequest_t *)mpi_request;
159
160 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
161 "config, type(0x%02x), ext_type(0x%02x), number(%d)",
162 (config_request->Header.PageType &
163 MPI2_CONFIG_PAGETYPE_MASK), config_request->ExtPageType,
164 config_request->Header.PageNumber);
165 desc = ioc->tmp_string;
166 break;
167 }
168 case MPI2_FUNCTION_PORT_FACTS:
169 desc = "port_facts";
170 break;
171 case MPI2_FUNCTION_PORT_ENABLE:
172 desc = "port_enable";
173 break;
174 case MPI2_FUNCTION_EVENT_NOTIFICATION:
175 desc = "event_notification";
176 break;
177 case MPI2_FUNCTION_FW_DOWNLOAD:
178 desc = "fw_download";
179 break;
180 case MPI2_FUNCTION_FW_UPLOAD:
181 desc = "fw_upload";
182 break;
183 case MPI2_FUNCTION_RAID_ACTION:
184 desc = "raid_action";
185 break;
186 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
187 {
188 Mpi2SCSIIORequest_t *scsi_request =
189 (Mpi2SCSIIORequest_t *)mpi_request;
190
191 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
192 "raid_pass, cmd(0x%02x), cdb_len(%d)",
193 scsi_request->CDB.CDB32[0],
194 le16_to_cpu(scsi_request->IoFlags) & 0xF);
195 desc = ioc->tmp_string;
196 break;
197 }
198 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
199 desc = "sas_iounit_cntl";
200 break;
201 case MPI2_FUNCTION_SATA_PASSTHROUGH:
202 desc = "sata_pass";
203 break;
204 case MPI2_FUNCTION_DIAG_BUFFER_POST:
205 desc = "diag_buffer_post";
206 break;
207 case MPI2_FUNCTION_DIAG_RELEASE:
208 desc = "diag_release";
209 break;
210 case MPI2_FUNCTION_SMP_PASSTHROUGH:
211 desc = "smp_passthrough";
212 break;
213 }
214
215 if (!desc)
216 return;
217
218 printk(MPT2SAS_INFO_FMT "%s: %s, smid(%d)\n",
219 ioc->name, calling_function_name, desc, smid);
220
221 if (!mpi_reply)
222 return;
223
224 if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo)
225 printk(MPT2SAS_INFO_FMT
226 "\tiocstatus(0x%04x), loginfo(0x%08x)\n",
227 ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
228 le32_to_cpu(mpi_reply->IOCLogInfo));
229
230 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
231 mpi_request->Function ==
232 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
233 Mpi2SCSIIOReply_t *scsi_reply =
234 (Mpi2SCSIIOReply_t *)mpi_reply;
235 struct _sas_device *sas_device = NULL;
236 unsigned long flags;
237
238 spin_lock_irqsave(&ioc->sas_device_lock, flags);
239 sas_device = _ctl_sas_device_find_by_handle(ioc,
240 le16_to_cpu(scsi_reply->DevHandle));
241 if (sas_device) {
242 printk(MPT2SAS_WARN_FMT "\tsas_address(0x%016llx), "
243 "phy(%d)\n", ioc->name, (unsigned long long)
244 sas_device->sas_address, sas_device->phy);
245 printk(MPT2SAS_WARN_FMT
246 "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
247 ioc->name, sas_device->enclosure_logical_id,
248 sas_device->slot);
249 }
250 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
251 if (scsi_reply->SCSIState || scsi_reply->SCSIStatus)
252 printk(MPT2SAS_INFO_FMT
253 "\tscsi_state(0x%02x), scsi_status"
254 "(0x%02x)\n", ioc->name,
255 scsi_reply->SCSIState,
256 scsi_reply->SCSIStatus);
257 }
258 }
259 #endif
260
261 /**
262 * mpt2sas_ctl_done - ctl module completion routine
263 * @ioc: per adapter object
264 * @smid: system request message index
265 * @msix_index: MSIX table index supplied by the OS
266 * @reply: reply message frame(lower 32bit addr)
267 * Context: none.
268 *
269 * The callback handler when using ioc->ctl_cb_idx.
270 *
271 * Return 1 meaning mf should be freed from _base_interrupt
272 * 0 means the mf is freed from this function.
273 */
274 u8
275 mpt2sas_ctl_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
276 u32 reply)
277 {
278 MPI2DefaultReply_t *mpi_reply;
279 Mpi2SCSIIOReply_t *scsiio_reply;
280 const void *sense_data;
281 u32 sz;
282
283 if (ioc->ctl_cmds.status == MPT2_CMD_NOT_USED)
284 return 1;
285 if (ioc->ctl_cmds.smid != smid)
286 return 1;
287 ioc->ctl_cmds.status |= MPT2_CMD_COMPLETE;
288 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
289 if (mpi_reply) {
290 memcpy(ioc->ctl_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
291 ioc->ctl_cmds.status |= MPT2_CMD_REPLY_VALID;
292 /* get sense data */
293 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
294 mpi_reply->Function ==
295 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
296 scsiio_reply = (Mpi2SCSIIOReply_t *)mpi_reply;
297 if (scsiio_reply->SCSIState &
298 MPI2_SCSI_STATE_AUTOSENSE_VALID) {
299 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
300 le32_to_cpu(scsiio_reply->SenseCount));
301 sense_data = mpt2sas_base_get_sense_buffer(ioc,
302 smid);
303 memcpy(ioc->ctl_cmds.sense, sense_data, sz);
304 }
305 }
306 }
307 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
308 _ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply);
309 #endif
310 ioc->ctl_cmds.status &= ~MPT2_CMD_PENDING;
311 complete(&ioc->ctl_cmds.done);
312 return 1;
313 }
314
315 /**
316 * _ctl_check_event_type - determines when an event needs logging
317 * @ioc: per adapter object
318 * @event: firmware event
319 *
320 * The bitmask in ioc->event_type[] indicates which events should be
321 * be saved in the driver event_log. This bitmask is set by application.
322 *
323 * Returns 1 when event should be captured, or zero means no match.
324 */
325 static int
326 _ctl_check_event_type(struct MPT2SAS_ADAPTER *ioc, u16 event)
327 {
328 u16 i;
329 u32 desired_event;
330
331 if (event >= 128 || !event || !ioc->event_log)
332 return 0;
333
334 desired_event = (1 << (event % 32));
335 if (!desired_event)
336 desired_event = 1;
337 i = event / 32;
338 return desired_event & ioc->event_type[i];
339 }
340
341 /**
342 * mpt2sas_ctl_add_to_event_log - add event
343 * @ioc: per adapter object
344 * @mpi_reply: reply message frame
345 *
346 * Return nothing.
347 */
348 void
349 mpt2sas_ctl_add_to_event_log(struct MPT2SAS_ADAPTER *ioc,
350 Mpi2EventNotificationReply_t *mpi_reply)
351 {
352 struct MPT2_IOCTL_EVENTS *event_log;
353 u16 event;
354 int i;
355 u32 sz, event_data_sz;
356 u8 send_aen = 0;
357
358 if (!ioc->event_log)
359 return;
360
361 event = le16_to_cpu(mpi_reply->Event);
362
363 if (_ctl_check_event_type(ioc, event)) {
364
365 /* insert entry into circular event_log */
366 i = ioc->event_context % MPT2SAS_CTL_EVENT_LOG_SIZE;
367 event_log = ioc->event_log;
368 event_log[i].event = event;
369 event_log[i].context = ioc->event_context++;
370
371 event_data_sz = le16_to_cpu(mpi_reply->EventDataLength)*4;
372 sz = min_t(u32, event_data_sz, MPT2_EVENT_DATA_SIZE);
373 memset(event_log[i].data, 0, MPT2_EVENT_DATA_SIZE);
374 memcpy(event_log[i].data, mpi_reply->EventData, sz);
375 send_aen = 1;
376 }
377
378 /* This aen_event_read_flag flag is set until the
379 * application has read the event log.
380 * For MPI2_EVENT_LOG_ENTRY_ADDED, we always notify.
381 */
382 if (event == MPI2_EVENT_LOG_ENTRY_ADDED ||
383 (send_aen && !ioc->aen_event_read_flag)) {
384 ioc->aen_event_read_flag = 1;
385 wake_up_interruptible(&ctl_poll_wait);
386 if (async_queue)
387 kill_fasync(&async_queue, SIGIO, POLL_IN);
388 }
389 }
390
391 /**
392 * mpt2sas_ctl_event_callback - firmware event handler (called at ISR time)
393 * @ioc: per adapter object
394 * @msix_index: MSIX table index supplied by the OS
395 * @reply: reply message frame(lower 32bit addr)
396 * Context: interrupt.
397 *
398 * This function merely adds a new work task into ioc->firmware_event_thread.
399 * The tasks are worked from _firmware_event_work in user context.
400 *
401 * Return 1 meaning mf should be freed from _base_interrupt
402 * 0 means the mf is freed from this function.
403 */
404 u8
405 mpt2sas_ctl_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 msix_index,
406 u32 reply)
407 {
408 Mpi2EventNotificationReply_t *mpi_reply;
409
410 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
411 mpt2sas_ctl_add_to_event_log(ioc, mpi_reply);
412 return 1;
413 }
414
415 /**
416 * _ctl_verify_adapter - validates ioc_number passed from application
417 * @ioc: per adapter object
418 * @iocpp: The ioc pointer is returned in this.
419 *
420 * Return (-1) means error, else ioc_number.
421 */
422 static int
423 _ctl_verify_adapter(int ioc_number, struct MPT2SAS_ADAPTER **iocpp)
424 {
425 struct MPT2SAS_ADAPTER *ioc;
426
427 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
428 if (ioc->id != ioc_number)
429 continue;
430 *iocpp = ioc;
431 return ioc_number;
432 }
433 *iocpp = NULL;
434 return -1;
435 }
436
437 /**
438 * mpt2sas_ctl_reset_handler - reset callback handler (for ctl)
439 * @ioc: per adapter object
440 * @reset_phase: phase
441 *
442 * The handler for doing any required cleanup or initialization.
443 *
444 * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
445 * MPT2_IOC_DONE_RESET
446 */
447 void
448 mpt2sas_ctl_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
449 {
450 int i;
451 u8 issue_reset;
452
453 switch (reset_phase) {
454 case MPT2_IOC_PRE_RESET:
455 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
456 "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
457 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
458 if (!(ioc->diag_buffer_status[i] &
459 MPT2_DIAG_BUFFER_IS_REGISTERED))
460 continue;
461 if ((ioc->diag_buffer_status[i] &
462 MPT2_DIAG_BUFFER_IS_RELEASED))
463 continue;
464 _ctl_send_release(ioc, i, &issue_reset);
465 }
466 break;
467 case MPT2_IOC_AFTER_RESET:
468 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
469 "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
470 if (ioc->ctl_cmds.status & MPT2_CMD_PENDING) {
471 ioc->ctl_cmds.status |= MPT2_CMD_RESET;
472 mpt2sas_base_free_smid(ioc, ioc->ctl_cmds.smid);
473 complete(&ioc->ctl_cmds.done);
474 }
475 break;
476 case MPT2_IOC_DONE_RESET:
477 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
478 "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
479
480 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
481 if (!(ioc->diag_buffer_status[i] &
482 MPT2_DIAG_BUFFER_IS_REGISTERED))
483 continue;
484 if ((ioc->diag_buffer_status[i] &
485 MPT2_DIAG_BUFFER_IS_RELEASED))
486 continue;
487 ioc->diag_buffer_status[i] |=
488 MPT2_DIAG_BUFFER_IS_DIAG_RESET;
489 }
490 break;
491 }
492 }
493
494 /**
495 * _ctl_fasync -
496 * @fd -
497 * @filep -
498 * @mode -
499 *
500 * Called when application request fasyn callback handler.
501 */
502 static int
503 _ctl_fasync(int fd, struct file *filep, int mode)
504 {
505 return fasync_helper(fd, filep, mode, &async_queue);
506 }
507
508 /**
509 * _ctl_release -
510 * @inode -
511 * @filep -
512 *
513 * Called when application releases the fasyn callback handler.
514 */
515 static int
516 _ctl_release(struct inode *inode, struct file *filep)
517 {
518 return fasync_helper(-1, filep, 0, &async_queue);
519 }
520
521 /**
522 * _ctl_poll -
523 * @file -
524 * @wait -
525 *
526 */
527 static unsigned int
528 _ctl_poll(struct file *filep, poll_table *wait)
529 {
530 struct MPT2SAS_ADAPTER *ioc;
531
532 poll_wait(filep, &ctl_poll_wait, wait);
533
534 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
535 if (ioc->aen_event_read_flag)
536 return POLLIN | POLLRDNORM;
537 }
538 return 0;
539 }
540
541 /**
542 * _ctl_set_task_mid - assign an active smid to tm request
543 * @ioc: per adapter object
544 * @karg - (struct mpt2_ioctl_command)
545 * @tm_request - pointer to mf from user space
546 *
547 * Returns 0 when an smid if found, else fail.
548 * during failure, the reply frame is filled.
549 */
550 static int
551 _ctl_set_task_mid(struct MPT2SAS_ADAPTER *ioc, struct mpt2_ioctl_command *karg,
552 Mpi2SCSITaskManagementRequest_t *tm_request)
553 {
554 u8 found = 0;
555 u16 i;
556 u16 handle;
557 struct scsi_cmnd *scmd;
558 struct MPT2SAS_DEVICE *priv_data;
559 unsigned long flags;
560 Mpi2SCSITaskManagementReply_t *tm_reply;
561 u32 sz;
562 u32 lun;
563 char *desc = NULL;
564
565 if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
566 desc = "abort_task";
567 else if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
568 desc = "query_task";
569 else
570 return 0;
571
572 lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN);
573
574 handle = le16_to_cpu(tm_request->DevHandle);
575 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
576 for (i = ioc->scsiio_depth; i && !found; i--) {
577 scmd = ioc->scsi_lookup[i - 1].scmd;
578 if (scmd == NULL || scmd->device == NULL ||
579 scmd->device->hostdata == NULL)
580 continue;
581 if (lun != scmd->device->lun)
582 continue;
583 priv_data = scmd->device->hostdata;
584 if (priv_data->sas_target == NULL)
585 continue;
586 if (priv_data->sas_target->handle != handle)
587 continue;
588 tm_request->TaskMID = cpu_to_le16(ioc->scsi_lookup[i - 1].smid);
589 found = 1;
590 }
591 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
592
593 if (!found) {
594 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
595 "handle(0x%04x), lun(%d), no active mid!!\n", ioc->name,
596 desc, le16_to_cpu(tm_request->DevHandle), lun));
597 tm_reply = ioc->ctl_cmds.reply;
598 tm_reply->DevHandle = tm_request->DevHandle;
599 tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
600 tm_reply->TaskType = tm_request->TaskType;
601 tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4;
602 tm_reply->VP_ID = tm_request->VP_ID;
603 tm_reply->VF_ID = tm_request->VF_ID;
604 sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz);
605 if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply,
606 sz))
607 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
608 __LINE__, __func__);
609 return 1;
610 }
611
612 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
613 "handle(0x%04x), lun(%d), task_mid(%d)\n", ioc->name,
614 desc, le16_to_cpu(tm_request->DevHandle), lun,
615 le16_to_cpu(tm_request->TaskMID)));
616 return 0;
617 }
618
619 /**
620 * _ctl_do_mpt_command - main handler for MPT2COMMAND opcode
621 * @ioc: per adapter object
622 * @karg - (struct mpt2_ioctl_command)
623 * @mf - pointer to mf in user space
624 * @state - NON_BLOCKING or BLOCKING
625 */
626 static long
627 _ctl_do_mpt_command(struct MPT2SAS_ADAPTER *ioc,
628 struct mpt2_ioctl_command karg, void __user *mf, enum block_state state)
629 {
630 MPI2RequestHeader_t *mpi_request = NULL, *request;
631 MPI2DefaultReply_t *mpi_reply;
632 u32 ioc_state;
633 u16 ioc_status;
634 u16 smid;
635 unsigned long timeout, timeleft;
636 u8 issue_reset;
637 u32 sz;
638 void *psge;
639 void *data_out = NULL;
640 dma_addr_t data_out_dma;
641 size_t data_out_sz = 0;
642 void *data_in = NULL;
643 dma_addr_t data_in_dma;
644 size_t data_in_sz = 0;
645 u32 sgl_flags;
646 long ret;
647 u16 wait_state_count;
648
649 issue_reset = 0;
650
651 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
652 return -EAGAIN;
653 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
654 return -ERESTARTSYS;
655
656 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
657 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
658 ioc->name, __func__);
659 ret = -EAGAIN;
660 goto out;
661 }
662
663 wait_state_count = 0;
664 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
665 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
666 if (wait_state_count++ == 10) {
667 printk(MPT2SAS_ERR_FMT
668 "%s: failed due to ioc not operational\n",
669 ioc->name, __func__);
670 ret = -EFAULT;
671 goto out;
672 }
673 ssleep(1);
674 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
675 printk(MPT2SAS_INFO_FMT "%s: waiting for "
676 "operational state(count=%d)\n", ioc->name,
677 __func__, wait_state_count);
678 }
679 if (wait_state_count)
680 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
681 ioc->name, __func__);
682
683 mpi_request = kzalloc(ioc->request_sz, GFP_KERNEL);
684 if (!mpi_request) {
685 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a memory for "
686 "mpi_request\n", ioc->name, __func__);
687 ret = -ENOMEM;
688 goto out;
689 }
690
691 /* Check for overflow and wraparound */
692 if (karg.data_sge_offset * 4 > ioc->request_sz ||
693 karg.data_sge_offset > (UINT_MAX / 4)) {
694 ret = -EINVAL;
695 goto out;
696 }
697
698 /* copy in request message frame from user */
699 if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) {
700 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__,
701 __func__);
702 ret = -EFAULT;
703 goto out;
704 }
705
706 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
707 smid = mpt2sas_base_get_smid_hpr(ioc, ioc->ctl_cb_idx);
708 if (!smid) {
709 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
710 ioc->name, __func__);
711 ret = -EAGAIN;
712 goto out;
713 }
714 } else {
715
716 smid = mpt2sas_base_get_smid_scsiio(ioc, ioc->ctl_cb_idx, NULL);
717 if (!smid) {
718 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
719 ioc->name, __func__);
720 ret = -EAGAIN;
721 goto out;
722 }
723 }
724
725 ret = 0;
726 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
727 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
728 request = mpt2sas_base_get_msg_frame(ioc, smid);
729 memcpy(request, mpi_request, karg.data_sge_offset*4);
730 ioc->ctl_cmds.smid = smid;
731 data_out_sz = karg.data_out_size;
732 data_in_sz = karg.data_in_size;
733
734 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
735 mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
736 if (!le16_to_cpu(mpi_request->FunctionDependent1) ||
737 le16_to_cpu(mpi_request->FunctionDependent1) >
738 ioc->facts.MaxDevHandle) {
739 ret = -EINVAL;
740 mpt2sas_base_free_smid(ioc, smid);
741 goto out;
742 }
743 }
744
745 /* obtain dma-able memory for data transfer */
746 if (data_out_sz) /* WRITE */ {
747 data_out = pci_alloc_consistent(ioc->pdev, data_out_sz,
748 &data_out_dma);
749 if (!data_out) {
750 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
751 __LINE__, __func__);
752 ret = -ENOMEM;
753 mpt2sas_base_free_smid(ioc, smid);
754 goto out;
755 }
756 if (copy_from_user(data_out, karg.data_out_buf_ptr,
757 data_out_sz)) {
758 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
759 __LINE__, __func__);
760 ret = -EFAULT;
761 mpt2sas_base_free_smid(ioc, smid);
762 goto out;
763 }
764 }
765
766 if (data_in_sz) /* READ */ {
767 data_in = pci_alloc_consistent(ioc->pdev, data_in_sz,
768 &data_in_dma);
769 if (!data_in) {
770 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
771 __LINE__, __func__);
772 ret = -ENOMEM;
773 mpt2sas_base_free_smid(ioc, smid);
774 goto out;
775 }
776 }
777
778 /* add scatter gather elements */
779 psge = (void *)request + (karg.data_sge_offset*4);
780
781 if (!data_out_sz && !data_in_sz) {
782 mpt2sas_base_build_zero_len_sge(ioc, psge);
783 } else if (data_out_sz && data_in_sz) {
784 /* WRITE sgel first */
785 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
786 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
787 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
788 ioc->base_add_sg_single(psge, sgl_flags |
789 data_out_sz, data_out_dma);
790
791 /* incr sgel */
792 psge += ioc->sge_size;
793
794 /* READ sgel last */
795 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
796 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
797 MPI2_SGE_FLAGS_END_OF_LIST);
798 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
799 ioc->base_add_sg_single(psge, sgl_flags |
800 data_in_sz, data_in_dma);
801 } else if (data_out_sz) /* WRITE */ {
802 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
803 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
804 MPI2_SGE_FLAGS_END_OF_LIST | MPI2_SGE_FLAGS_HOST_TO_IOC);
805 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
806 ioc->base_add_sg_single(psge, sgl_flags |
807 data_out_sz, data_out_dma);
808 } else if (data_in_sz) /* READ */ {
809 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
810 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
811 MPI2_SGE_FLAGS_END_OF_LIST);
812 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
813 ioc->base_add_sg_single(psge, sgl_flags |
814 data_in_sz, data_in_dma);
815 }
816
817 /* send command to firmware */
818 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
819 _ctl_display_some_debug(ioc, smid, "ctl_request", NULL);
820 #endif
821
822 switch (mpi_request->Function) {
823 case MPI2_FUNCTION_SCSI_IO_REQUEST:
824 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
825 {
826 Mpi2SCSIIORequest_t *scsiio_request =
827 (Mpi2SCSIIORequest_t *)request;
828 scsiio_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
829 scsiio_request->SenseBufferLowAddress =
830 mpt2sas_base_get_sense_buffer_dma(ioc, smid);
831 memset(ioc->ctl_cmds.sense, 0, SCSI_SENSE_BUFFERSIZE);
832 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)
833 mpt2sas_base_put_smid_scsi_io(ioc, smid,
834 le16_to_cpu(mpi_request->FunctionDependent1));
835 else
836 mpt2sas_base_put_smid_default(ioc, smid);
837 break;
838 }
839 case MPI2_FUNCTION_SCSI_TASK_MGMT:
840 {
841 Mpi2SCSITaskManagementRequest_t *tm_request =
842 (Mpi2SCSITaskManagementRequest_t *)request;
843
844 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "TASK_MGMT: "
845 "handle(0x%04x), task_type(0x%02x)\n", ioc->name,
846 le16_to_cpu(tm_request->DevHandle), tm_request->TaskType));
847
848 if (tm_request->TaskType ==
849 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK ||
850 tm_request->TaskType ==
851 MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) {
852 if (_ctl_set_task_mid(ioc, &karg, tm_request)) {
853 mpt2sas_base_free_smid(ioc, smid);
854 goto out;
855 }
856 }
857
858 mpt2sas_scsih_set_tm_flag(ioc, le16_to_cpu(
859 tm_request->DevHandle));
860 mpt2sas_base_put_smid_hi_priority(ioc, smid);
861 break;
862 }
863 case MPI2_FUNCTION_SMP_PASSTHROUGH:
864 {
865 Mpi2SmpPassthroughRequest_t *smp_request =
866 (Mpi2SmpPassthroughRequest_t *)mpi_request;
867 u8 *data;
868
869 /* ioc determines which port to use */
870 smp_request->PhysicalPort = 0xFF;
871 if (smp_request->PassthroughFlags &
872 MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE)
873 data = (u8 *)&smp_request->SGL;
874 else
875 data = data_out;
876
877 if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) {
878 ioc->ioc_link_reset_in_progress = 1;
879 ioc->ignore_loginfos = 1;
880 }
881 mpt2sas_base_put_smid_default(ioc, smid);
882 break;
883 }
884 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
885 {
886 Mpi2SasIoUnitControlRequest_t *sasiounit_request =
887 (Mpi2SasIoUnitControlRequest_t *)mpi_request;
888
889 if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET
890 || sasiounit_request->Operation ==
891 MPI2_SAS_OP_PHY_LINK_RESET) {
892 ioc->ioc_link_reset_in_progress = 1;
893 ioc->ignore_loginfos = 1;
894 }
895 mpt2sas_base_put_smid_default(ioc, smid);
896 break;
897 }
898 default:
899 mpt2sas_base_put_smid_default(ioc, smid);
900 break;
901 }
902
903 if (karg.timeout < MPT2_IOCTL_DEFAULT_TIMEOUT)
904 timeout = MPT2_IOCTL_DEFAULT_TIMEOUT;
905 else
906 timeout = karg.timeout;
907 init_completion(&ioc->ctl_cmds.done);
908 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
909 timeout*HZ);
910 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
911 Mpi2SCSITaskManagementRequest_t *tm_request =
912 (Mpi2SCSITaskManagementRequest_t *)mpi_request;
913 mpt2sas_scsih_clear_tm_flag(ioc, le16_to_cpu(
914 tm_request->DevHandle));
915 } else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH ||
916 mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) &&
917 ioc->ioc_link_reset_in_progress) {
918 ioc->ioc_link_reset_in_progress = 0;
919 ioc->ignore_loginfos = 0;
920 }
921 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
922 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
923 __func__);
924 _debug_dump_mf(mpi_request, karg.data_sge_offset);
925 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
926 issue_reset = 1;
927 goto issue_host_reset;
928 }
929
930 mpi_reply = ioc->ctl_cmds.reply;
931 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
932
933 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
934 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT &&
935 (ioc->logging_level & MPT_DEBUG_TM)) {
936 Mpi2SCSITaskManagementReply_t *tm_reply =
937 (Mpi2SCSITaskManagementReply_t *)mpi_reply;
938
939 printk(MPT2SAS_INFO_FMT "TASK_MGMT: "
940 "IOCStatus(0x%04x), IOCLogInfo(0x%08x), "
941 "TerminationCount(0x%08x)\n", ioc->name,
942 le16_to_cpu(tm_reply->IOCStatus),
943 le32_to_cpu(tm_reply->IOCLogInfo),
944 le32_to_cpu(tm_reply->TerminationCount));
945 }
946 #endif
947 /* copy out xdata to user */
948 if (data_in_sz) {
949 if (copy_to_user(karg.data_in_buf_ptr, data_in,
950 data_in_sz)) {
951 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
952 __LINE__, __func__);
953 ret = -ENODATA;
954 goto out;
955 }
956 }
957
958 /* copy out reply message frame to user */
959 if (karg.max_reply_bytes) {
960 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
961 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
962 sz)) {
963 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
964 __LINE__, __func__);
965 ret = -ENODATA;
966 goto out;
967 }
968 }
969
970 /* copy out sense to user */
971 if (karg.max_sense_bytes && (mpi_request->Function ==
972 MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
973 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
974 sz = min_t(u32, karg.max_sense_bytes, SCSI_SENSE_BUFFERSIZE);
975 if (copy_to_user(karg.sense_data_ptr,
976 ioc->ctl_cmds.sense, sz)) {
977 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
978 __LINE__, __func__);
979 ret = -ENODATA;
980 goto out;
981 }
982 }
983
984 issue_host_reset:
985 if (issue_reset) {
986 ret = -ENODATA;
987 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
988 mpi_request->Function ==
989 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
990 printk(MPT2SAS_INFO_FMT "issue target reset: handle "
991 "= (0x%04x)\n", ioc->name,
992 le16_to_cpu(mpi_request->FunctionDependent1));
993 mpt2sas_halt_firmware(ioc);
994 mpt2sas_scsih_issue_tm(ioc,
995 le16_to_cpu(mpi_request->FunctionDependent1), 0, 0,
996 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 10,
997 NULL);
998 ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
999 } else
1000 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1001 FORCE_BIG_HAMMER);
1002 }
1003
1004 out:
1005
1006 /* free memory associated with sg buffers */
1007 if (data_in)
1008 pci_free_consistent(ioc->pdev, data_in_sz, data_in,
1009 data_in_dma);
1010
1011 if (data_out)
1012 pci_free_consistent(ioc->pdev, data_out_sz, data_out,
1013 data_out_dma);
1014
1015 kfree(mpi_request);
1016 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1017 mutex_unlock(&ioc->ctl_cmds.mutex);
1018 return ret;
1019 }
1020
1021 /**
1022 * _ctl_getiocinfo - main handler for MPT2IOCINFO opcode
1023 * @arg - user space buffer containing ioctl content
1024 */
1025 static long
1026 _ctl_getiocinfo(void __user *arg)
1027 {
1028 struct mpt2_ioctl_iocinfo karg;
1029 struct MPT2SAS_ADAPTER *ioc;
1030 u8 revision;
1031
1032 if (copy_from_user(&karg, arg, sizeof(karg))) {
1033 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1034 __FILE__, __LINE__, __func__);
1035 return -EFAULT;
1036 }
1037 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1038 return -ENODEV;
1039
1040 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1041 __func__));
1042
1043 memset(&karg, 0 , sizeof(karg));
1044 if (ioc->is_warpdrive)
1045 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2_SSS6200;
1046 else
1047 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
1048 if (ioc->pfacts)
1049 karg.port_number = ioc->pfacts[0].PortNumber;
1050 pci_read_config_byte(ioc->pdev, PCI_CLASS_REVISION, &revision);
1051 karg.hw_rev = revision;
1052 karg.pci_id = ioc->pdev->device;
1053 karg.subsystem_device = ioc->pdev->subsystem_device;
1054 karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
1055 karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
1056 karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
1057 karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
1058 karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
1059 karg.firmware_version = ioc->facts.FWVersion.Word;
1060 strcpy(karg.driver_version, MPT2SAS_DRIVER_NAME);
1061 strcat(karg.driver_version, "-");
1062 strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
1063 karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
1064
1065 if (copy_to_user(arg, &karg, sizeof(karg))) {
1066 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1067 __FILE__, __LINE__, __func__);
1068 return -EFAULT;
1069 }
1070 return 0;
1071 }
1072
1073 /**
1074 * _ctl_eventquery - main handler for MPT2EVENTQUERY opcode
1075 * @arg - user space buffer containing ioctl content
1076 */
1077 static long
1078 _ctl_eventquery(void __user *arg)
1079 {
1080 struct mpt2_ioctl_eventquery karg;
1081 struct MPT2SAS_ADAPTER *ioc;
1082
1083 if (copy_from_user(&karg, arg, sizeof(karg))) {
1084 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1085 __FILE__, __LINE__, __func__);
1086 return -EFAULT;
1087 }
1088 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1089 return -ENODEV;
1090
1091 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1092 __func__));
1093
1094 karg.event_entries = MPT2SAS_CTL_EVENT_LOG_SIZE;
1095 memcpy(karg.event_types, ioc->event_type,
1096 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1097
1098 if (copy_to_user(arg, &karg, sizeof(karg))) {
1099 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1100 __FILE__, __LINE__, __func__);
1101 return -EFAULT;
1102 }
1103 return 0;
1104 }
1105
1106 /**
1107 * _ctl_eventenable - main handler for MPT2EVENTENABLE opcode
1108 * @arg - user space buffer containing ioctl content
1109 */
1110 static long
1111 _ctl_eventenable(void __user *arg)
1112 {
1113 struct mpt2_ioctl_eventenable karg;
1114 struct MPT2SAS_ADAPTER *ioc;
1115
1116 if (copy_from_user(&karg, arg, sizeof(karg))) {
1117 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1118 __FILE__, __LINE__, __func__);
1119 return -EFAULT;
1120 }
1121 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1122 return -ENODEV;
1123
1124 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1125 __func__));
1126
1127 if (ioc->event_log)
1128 return 0;
1129 memcpy(ioc->event_type, karg.event_types,
1130 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1131 mpt2sas_base_validate_event_type(ioc, ioc->event_type);
1132
1133 /* initialize event_log */
1134 ioc->event_context = 0;
1135 ioc->aen_event_read_flag = 0;
1136 ioc->event_log = kcalloc(MPT2SAS_CTL_EVENT_LOG_SIZE,
1137 sizeof(struct MPT2_IOCTL_EVENTS), GFP_KERNEL);
1138 if (!ioc->event_log) {
1139 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1140 __FILE__, __LINE__, __func__);
1141 return -ENOMEM;
1142 }
1143 return 0;
1144 }
1145
1146 /**
1147 * _ctl_eventreport - main handler for MPT2EVENTREPORT opcode
1148 * @arg - user space buffer containing ioctl content
1149 */
1150 static long
1151 _ctl_eventreport(void __user *arg)
1152 {
1153 struct mpt2_ioctl_eventreport karg;
1154 struct MPT2SAS_ADAPTER *ioc;
1155 u32 number_bytes, max_events, max;
1156 struct mpt2_ioctl_eventreport __user *uarg = arg;
1157
1158 if (copy_from_user(&karg, arg, sizeof(karg))) {
1159 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1160 __FILE__, __LINE__, __func__);
1161 return -EFAULT;
1162 }
1163 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1164 return -ENODEV;
1165
1166 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1167 __func__));
1168
1169 number_bytes = karg.hdr.max_data_size -
1170 sizeof(struct mpt2_ioctl_header);
1171 max_events = number_bytes/sizeof(struct MPT2_IOCTL_EVENTS);
1172 max = min_t(u32, MPT2SAS_CTL_EVENT_LOG_SIZE, max_events);
1173
1174 /* If fewer than 1 event is requested, there must have
1175 * been some type of error.
1176 */
1177 if (!max || !ioc->event_log)
1178 return -ENODATA;
1179
1180 number_bytes = max * sizeof(struct MPT2_IOCTL_EVENTS);
1181 if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
1182 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1183 __FILE__, __LINE__, __func__);
1184 return -EFAULT;
1185 }
1186
1187 /* reset flag so SIGIO can restart */
1188 ioc->aen_event_read_flag = 0;
1189 return 0;
1190 }
1191
1192 /**
1193 * _ctl_do_reset - main handler for MPT2HARDRESET opcode
1194 * @arg - user space buffer containing ioctl content
1195 */
1196 static long
1197 _ctl_do_reset(void __user *arg)
1198 {
1199 struct mpt2_ioctl_diag_reset karg;
1200 struct MPT2SAS_ADAPTER *ioc;
1201 int retval;
1202
1203 if (copy_from_user(&karg, arg, sizeof(karg))) {
1204 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1205 __FILE__, __LINE__, __func__);
1206 return -EFAULT;
1207 }
1208 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1209 return -ENODEV;
1210
1211 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1212 __func__));
1213
1214 retval = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1215 FORCE_BIG_HAMMER);
1216 printk(MPT2SAS_INFO_FMT "host reset: %s\n",
1217 ioc->name, ((!retval) ? "SUCCESS" : "FAILED"));
1218 return 0;
1219 }
1220
1221 /**
1222 * _ctl_btdh_search_sas_device - searching for sas device
1223 * @ioc: per adapter object
1224 * @btdh: btdh ioctl payload
1225 */
1226 static int
1227 _ctl_btdh_search_sas_device(struct MPT2SAS_ADAPTER *ioc,
1228 struct mpt2_ioctl_btdh_mapping *btdh)
1229 {
1230 struct _sas_device *sas_device;
1231 unsigned long flags;
1232 int rc = 0;
1233
1234 if (list_empty(&ioc->sas_device_list))
1235 return rc;
1236
1237 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1238 list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
1239 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1240 btdh->handle == sas_device->handle) {
1241 btdh->bus = sas_device->channel;
1242 btdh->id = sas_device->id;
1243 rc = 1;
1244 goto out;
1245 } else if (btdh->bus == sas_device->channel && btdh->id ==
1246 sas_device->id && btdh->handle == 0xFFFF) {
1247 btdh->handle = sas_device->handle;
1248 rc = 1;
1249 goto out;
1250 }
1251 }
1252 out:
1253 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1254 return rc;
1255 }
1256
1257 /**
1258 * _ctl_btdh_search_raid_device - searching for raid device
1259 * @ioc: per adapter object
1260 * @btdh: btdh ioctl payload
1261 */
1262 static int
1263 _ctl_btdh_search_raid_device(struct MPT2SAS_ADAPTER *ioc,
1264 struct mpt2_ioctl_btdh_mapping *btdh)
1265 {
1266 struct _raid_device *raid_device;
1267 unsigned long flags;
1268 int rc = 0;
1269
1270 if (list_empty(&ioc->raid_device_list))
1271 return rc;
1272
1273 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1274 list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
1275 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1276 btdh->handle == raid_device->handle) {
1277 btdh->bus = raid_device->channel;
1278 btdh->id = raid_device->id;
1279 rc = 1;
1280 goto out;
1281 } else if (btdh->bus == raid_device->channel && btdh->id ==
1282 raid_device->id && btdh->handle == 0xFFFF) {
1283 btdh->handle = raid_device->handle;
1284 rc = 1;
1285 goto out;
1286 }
1287 }
1288 out:
1289 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1290 return rc;
1291 }
1292
1293 /**
1294 * _ctl_btdh_mapping - main handler for MPT2BTDHMAPPING opcode
1295 * @arg - user space buffer containing ioctl content
1296 */
1297 static long
1298 _ctl_btdh_mapping(void __user *arg)
1299 {
1300 struct mpt2_ioctl_btdh_mapping karg;
1301 struct MPT2SAS_ADAPTER *ioc;
1302 int rc;
1303
1304 if (copy_from_user(&karg, arg, sizeof(karg))) {
1305 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1306 __FILE__, __LINE__, __func__);
1307 return -EFAULT;
1308 }
1309 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1310 return -ENODEV;
1311
1312 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1313 __func__));
1314
1315 rc = _ctl_btdh_search_sas_device(ioc, &karg);
1316 if (!rc)
1317 _ctl_btdh_search_raid_device(ioc, &karg);
1318
1319 if (copy_to_user(arg, &karg, sizeof(karg))) {
1320 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1321 __FILE__, __LINE__, __func__);
1322 return -EFAULT;
1323 }
1324 return 0;
1325 }
1326
1327 /**
1328 * _ctl_diag_capability - return diag buffer capability
1329 * @ioc: per adapter object
1330 * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
1331 *
1332 * returns 1 when diag buffer support is enabled in firmware
1333 */
1334 static u8
1335 _ctl_diag_capability(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type)
1336 {
1337 u8 rc = 0;
1338
1339 switch (buffer_type) {
1340 case MPI2_DIAG_BUF_TYPE_TRACE:
1341 if (ioc->facts.IOCCapabilities &
1342 MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
1343 rc = 1;
1344 break;
1345 case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
1346 if (ioc->facts.IOCCapabilities &
1347 MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
1348 rc = 1;
1349 break;
1350 case MPI2_DIAG_BUF_TYPE_EXTENDED:
1351 if (ioc->facts.IOCCapabilities &
1352 MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER)
1353 rc = 1;
1354 }
1355
1356 return rc;
1357 }
1358
1359 /**
1360 * _ctl_diag_register_2 - wrapper for registering diag buffer support
1361 * @ioc: per adapter object
1362 * @diag_register: the diag_register struct passed in from user space
1363 *
1364 */
1365 static long
1366 _ctl_diag_register_2(struct MPT2SAS_ADAPTER *ioc,
1367 struct mpt2_diag_register *diag_register)
1368 {
1369 int rc, i;
1370 void *request_data = NULL;
1371 dma_addr_t request_data_dma;
1372 u32 request_data_sz = 0;
1373 Mpi2DiagBufferPostRequest_t *mpi_request;
1374 Mpi2DiagBufferPostReply_t *mpi_reply;
1375 u8 buffer_type;
1376 unsigned long timeleft;
1377 u16 smid;
1378 u16 ioc_status;
1379 u8 issue_reset = 0;
1380
1381 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1382 __func__));
1383
1384 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1385 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1386 ioc->name, __func__);
1387 rc = -EAGAIN;
1388 goto out;
1389 }
1390
1391 buffer_type = diag_register->buffer_type;
1392 if (!_ctl_diag_capability(ioc, buffer_type)) {
1393 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1394 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1395 return -EPERM;
1396 }
1397
1398 if (ioc->diag_buffer_status[buffer_type] &
1399 MPT2_DIAG_BUFFER_IS_REGISTERED) {
1400 printk(MPT2SAS_ERR_FMT "%s: already has a registered "
1401 "buffer for buffer_type(0x%02x)\n", ioc->name, __func__,
1402 buffer_type);
1403 return -EINVAL;
1404 }
1405
1406 if (diag_register->requested_buffer_size % 4) {
1407 printk(MPT2SAS_ERR_FMT "%s: the requested_buffer_size "
1408 "is not 4 byte aligned\n", ioc->name, __func__);
1409 return -EINVAL;
1410 }
1411
1412 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1413 if (!smid) {
1414 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1415 ioc->name, __func__);
1416 rc = -EAGAIN;
1417 goto out;
1418 }
1419
1420 rc = 0;
1421 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1422 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1423 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1424 ioc->ctl_cmds.smid = smid;
1425
1426 request_data = ioc->diag_buffer[buffer_type];
1427 request_data_sz = diag_register->requested_buffer_size;
1428 ioc->unique_id[buffer_type] = diag_register->unique_id;
1429 ioc->diag_buffer_status[buffer_type] = 0;
1430 memcpy(ioc->product_specific[buffer_type],
1431 diag_register->product_specific, MPT2_PRODUCT_SPECIFIC_DWORDS);
1432 ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags;
1433
1434 if (request_data) {
1435 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1436 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
1437 pci_free_consistent(ioc->pdev,
1438 ioc->diag_buffer_sz[buffer_type],
1439 request_data, request_data_dma);
1440 request_data = NULL;
1441 }
1442 }
1443
1444 if (request_data == NULL) {
1445 ioc->diag_buffer_sz[buffer_type] = 0;
1446 ioc->diag_buffer_dma[buffer_type] = 0;
1447 request_data = pci_alloc_consistent(
1448 ioc->pdev, request_data_sz, &request_data_dma);
1449 if (request_data == NULL) {
1450 printk(MPT2SAS_ERR_FMT "%s: failed allocating memory"
1451 " for diag buffers, requested size(%d)\n",
1452 ioc->name, __func__, request_data_sz);
1453 mpt2sas_base_free_smid(ioc, smid);
1454 return -ENOMEM;
1455 }
1456 ioc->diag_buffer[buffer_type] = request_data;
1457 ioc->diag_buffer_sz[buffer_type] = request_data_sz;
1458 ioc->diag_buffer_dma[buffer_type] = request_data_dma;
1459 }
1460
1461 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1462 mpi_request->BufferType = diag_register->buffer_type;
1463 mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags);
1464 mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
1465 mpi_request->BufferLength = cpu_to_le32(request_data_sz);
1466 mpi_request->VF_ID = 0; /* TODO */
1467 mpi_request->VP_ID = 0;
1468
1469 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: diag_buffer(0x%p), "
1470 "dma(0x%llx), sz(%d)\n", ioc->name, __func__, request_data,
1471 (unsigned long long)request_data_dma,
1472 le32_to_cpu(mpi_request->BufferLength)));
1473
1474 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1475 mpi_request->ProductSpecific[i] =
1476 cpu_to_le32(ioc->product_specific[buffer_type][i]);
1477
1478 mpt2sas_base_put_smid_default(ioc, smid);
1479 init_completion(&ioc->ctl_cmds.done);
1480 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1481 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1482
1483 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1484 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1485 __func__);
1486 _debug_dump_mf(mpi_request,
1487 sizeof(Mpi2DiagBufferPostRequest_t)/4);
1488 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1489 issue_reset = 1;
1490 goto issue_host_reset;
1491 }
1492
1493 /* process the completed Reply Message Frame */
1494 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1495 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1496 ioc->name, __func__);
1497 rc = -EFAULT;
1498 goto out;
1499 }
1500
1501 mpi_reply = ioc->ctl_cmds.reply;
1502 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1503
1504 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1505 ioc->diag_buffer_status[buffer_type] |=
1506 MPT2_DIAG_BUFFER_IS_REGISTERED;
1507 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
1508 ioc->name, __func__));
1509 } else {
1510 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
1511 "log_info(0x%08x)\n", ioc->name, __func__,
1512 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1513 rc = -EFAULT;
1514 }
1515
1516 issue_host_reset:
1517 if (issue_reset)
1518 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1519 FORCE_BIG_HAMMER);
1520
1521 out:
1522
1523 if (rc && request_data)
1524 pci_free_consistent(ioc->pdev, request_data_sz,
1525 request_data, request_data_dma);
1526
1527 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1528 return rc;
1529 }
1530
1531 /**
1532 * mpt2sas_enable_diag_buffer - enabling diag_buffers support driver load time
1533 * @ioc: per adapter object
1534 * @bits_to_register: bitwise field where trace is bit 0, and snapshot is bit 1
1535 *
1536 * This is called when command line option diag_buffer_enable is enabled
1537 * at driver load time.
1538 */
1539 void
1540 mpt2sas_enable_diag_buffer(struct MPT2SAS_ADAPTER *ioc, u8 bits_to_register)
1541 {
1542 struct mpt2_diag_register diag_register;
1543
1544 memset(&diag_register, 0, sizeof(struct mpt2_diag_register));
1545
1546 if (bits_to_register & 1) {
1547 printk(MPT2SAS_INFO_FMT "registering trace buffer support\n",
1548 ioc->name);
1549 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
1550 /* register for 1MB buffers */
1551 diag_register.requested_buffer_size = (1024 * 1024);
1552 diag_register.unique_id = 0x7075900;
1553 _ctl_diag_register_2(ioc, &diag_register);
1554 }
1555
1556 if (bits_to_register & 2) {
1557 printk(MPT2SAS_INFO_FMT "registering snapshot buffer support\n",
1558 ioc->name);
1559 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT;
1560 /* register for 2MB buffers */
1561 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1562 diag_register.unique_id = 0x7075901;
1563 _ctl_diag_register_2(ioc, &diag_register);
1564 }
1565
1566 if (bits_to_register & 4) {
1567 printk(MPT2SAS_INFO_FMT "registering extended buffer support\n",
1568 ioc->name);
1569 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_EXTENDED;
1570 /* register for 2MB buffers */
1571 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1572 diag_register.unique_id = 0x7075901;
1573 _ctl_diag_register_2(ioc, &diag_register);
1574 }
1575 }
1576
1577 /**
1578 * _ctl_diag_register - application register with driver
1579 * @arg - user space buffer containing ioctl content
1580 * @state - NON_BLOCKING or BLOCKING
1581 *
1582 * This will allow the driver to setup any required buffers that will be
1583 * needed by firmware to communicate with the driver.
1584 */
1585 static long
1586 _ctl_diag_register(void __user *arg, enum block_state state)
1587 {
1588 struct mpt2_diag_register karg;
1589 struct MPT2SAS_ADAPTER *ioc;
1590 long rc;
1591
1592 if (copy_from_user(&karg, arg, sizeof(karg))) {
1593 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1594 __FILE__, __LINE__, __func__);
1595 return -EFAULT;
1596 }
1597 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1598 return -ENODEV;
1599
1600 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1601 return -EAGAIN;
1602 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1603 return -ERESTARTSYS;
1604 rc = _ctl_diag_register_2(ioc, &karg);
1605 mutex_unlock(&ioc->ctl_cmds.mutex);
1606 return rc;
1607 }
1608
1609 /**
1610 * _ctl_diag_unregister - application unregister with driver
1611 * @arg - user space buffer containing ioctl content
1612 *
1613 * This will allow the driver to cleanup any memory allocated for diag
1614 * messages and to free up any resources.
1615 */
1616 static long
1617 _ctl_diag_unregister(void __user *arg)
1618 {
1619 struct mpt2_diag_unregister karg;
1620 struct MPT2SAS_ADAPTER *ioc;
1621 void *request_data;
1622 dma_addr_t request_data_dma;
1623 u32 request_data_sz;
1624 u8 buffer_type;
1625
1626 if (copy_from_user(&karg, arg, sizeof(karg))) {
1627 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1628 __FILE__, __LINE__, __func__);
1629 return -EFAULT;
1630 }
1631 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1632 return -ENODEV;
1633
1634 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1635 __func__));
1636
1637 buffer_type = karg.unique_id & 0x000000ff;
1638 if (!_ctl_diag_capability(ioc, buffer_type)) {
1639 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1640 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1641 return -EPERM;
1642 }
1643
1644 if ((ioc->diag_buffer_status[buffer_type] &
1645 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1646 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1647 "registered\n", ioc->name, __func__, buffer_type);
1648 return -EINVAL;
1649 }
1650 if ((ioc->diag_buffer_status[buffer_type] &
1651 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
1652 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) has not been "
1653 "released\n", ioc->name, __func__, buffer_type);
1654 return -EINVAL;
1655 }
1656
1657 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1658 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1659 "registered\n", ioc->name, __func__, karg.unique_id);
1660 return -EINVAL;
1661 }
1662
1663 request_data = ioc->diag_buffer[buffer_type];
1664 if (!request_data) {
1665 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1666 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1667 return -ENOMEM;
1668 }
1669
1670 request_data_sz = ioc->diag_buffer_sz[buffer_type];
1671 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1672 pci_free_consistent(ioc->pdev, request_data_sz,
1673 request_data, request_data_dma);
1674 ioc->diag_buffer[buffer_type] = NULL;
1675 ioc->diag_buffer_status[buffer_type] = 0;
1676 return 0;
1677 }
1678
1679 /**
1680 * _ctl_diag_query - query relevant info associated with diag buffers
1681 * @arg - user space buffer containing ioctl content
1682 *
1683 * The application will send only buffer_type and unique_id. Driver will
1684 * inspect unique_id first, if valid, fill in all the info. If unique_id is
1685 * 0x00, the driver will return info specified by Buffer Type.
1686 */
1687 static long
1688 _ctl_diag_query(void __user *arg)
1689 {
1690 struct mpt2_diag_query karg;
1691 struct MPT2SAS_ADAPTER *ioc;
1692 void *request_data;
1693 int i;
1694 u8 buffer_type;
1695
1696 if (copy_from_user(&karg, arg, sizeof(karg))) {
1697 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1698 __FILE__, __LINE__, __func__);
1699 return -EFAULT;
1700 }
1701 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1702 return -ENODEV;
1703
1704 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1705 __func__));
1706
1707 karg.application_flags = 0;
1708 buffer_type = karg.buffer_type;
1709
1710 if (!_ctl_diag_capability(ioc, buffer_type)) {
1711 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1712 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1713 return -EPERM;
1714 }
1715
1716 if ((ioc->diag_buffer_status[buffer_type] &
1717 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1718 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1719 "registered\n", ioc->name, __func__, buffer_type);
1720 return -EINVAL;
1721 }
1722
1723 if (karg.unique_id & 0xffffff00) {
1724 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1725 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1726 "registered\n", ioc->name, __func__,
1727 karg.unique_id);
1728 return -EINVAL;
1729 }
1730 }
1731
1732 request_data = ioc->diag_buffer[buffer_type];
1733 if (!request_data) {
1734 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1735 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1736 return -ENOMEM;
1737 }
1738
1739 if (ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_RELEASED)
1740 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1741 MPT2_APP_FLAGS_BUFFER_VALID);
1742 else
1743 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1744 MPT2_APP_FLAGS_BUFFER_VALID |
1745 MPT2_APP_FLAGS_FW_BUFFER_ACCESS);
1746
1747 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1748 karg.product_specific[i] =
1749 ioc->product_specific[buffer_type][i];
1750
1751 karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
1752 karg.driver_added_buffer_size = 0;
1753 karg.unique_id = ioc->unique_id[buffer_type];
1754 karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];
1755
1756 if (copy_to_user(arg, &karg, sizeof(struct mpt2_diag_query))) {
1757 printk(MPT2SAS_ERR_FMT "%s: unable to write mpt2_diag_query "
1758 "data @ %p\n", ioc->name, __func__, arg);
1759 return -EFAULT;
1760 }
1761 return 0;
1762 }
1763
1764 /**
1765 * _ctl_send_release - Diag Release Message
1766 * @ioc: per adapter object
1767 * @buffer_type - specifies either TRACE, SNAPSHOT, or EXTENDED
1768 * @issue_reset - specifies whether host reset is required.
1769 *
1770 */
1771 static int
1772 _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type, u8 *issue_reset)
1773 {
1774 Mpi2DiagReleaseRequest_t *mpi_request;
1775 Mpi2DiagReleaseReply_t *mpi_reply;
1776 u16 smid;
1777 u16 ioc_status;
1778 u32 ioc_state;
1779 int rc;
1780 unsigned long timeleft;
1781
1782 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1783 __func__));
1784
1785 rc = 0;
1786 *issue_reset = 0;
1787
1788 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1789 if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1790 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
1791 "skipping due to FAULT state\n", ioc->name,
1792 __func__));
1793 rc = -EAGAIN;
1794 goto out;
1795 }
1796
1797 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1798 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1799 ioc->name, __func__);
1800 rc = -EAGAIN;
1801 goto out;
1802 }
1803
1804 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1805 if (!smid) {
1806 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1807 ioc->name, __func__);
1808 rc = -EAGAIN;
1809 goto out;
1810 }
1811
1812 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1813 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1814 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1815 ioc->ctl_cmds.smid = smid;
1816
1817 mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
1818 mpi_request->BufferType = buffer_type;
1819 mpi_request->VF_ID = 0; /* TODO */
1820 mpi_request->VP_ID = 0;
1821
1822 mpt2sas_base_put_smid_default(ioc, smid);
1823 init_completion(&ioc->ctl_cmds.done);
1824 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1825 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1826
1827 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1828 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1829 __func__);
1830 _debug_dump_mf(mpi_request,
1831 sizeof(Mpi2DiagReleaseRequest_t)/4);
1832 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1833 *issue_reset = 1;
1834 rc = -EFAULT;
1835 goto out;
1836 }
1837
1838 /* process the completed Reply Message Frame */
1839 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1840 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1841 ioc->name, __func__);
1842 rc = -EFAULT;
1843 goto out;
1844 }
1845
1846 mpi_reply = ioc->ctl_cmds.reply;
1847 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1848
1849 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1850 ioc->diag_buffer_status[buffer_type] |=
1851 MPT2_DIAG_BUFFER_IS_RELEASED;
1852 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
1853 ioc->name, __func__));
1854 } else {
1855 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
1856 "log_info(0x%08x)\n", ioc->name, __func__,
1857 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1858 rc = -EFAULT;
1859 }
1860
1861 out:
1862 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1863 return rc;
1864 }
1865
1866 /**
1867 * _ctl_diag_release - request to send Diag Release Message to firmware
1868 * @arg - user space buffer containing ioctl content
1869 * @state - NON_BLOCKING or BLOCKING
1870 *
1871 * This allows ownership of the specified buffer to returned to the driver,
1872 * allowing an application to read the buffer without fear that firmware is
1873 * overwritting information in the buffer.
1874 */
1875 static long
1876 _ctl_diag_release(void __user *arg, enum block_state state)
1877 {
1878 struct mpt2_diag_release karg;
1879 struct MPT2SAS_ADAPTER *ioc;
1880 void *request_data;
1881 int rc;
1882 u8 buffer_type;
1883 u8 issue_reset = 0;
1884
1885 if (copy_from_user(&karg, arg, sizeof(karg))) {
1886 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1887 __FILE__, __LINE__, __func__);
1888 return -EFAULT;
1889 }
1890 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1891 return -ENODEV;
1892
1893 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1894 __func__));
1895
1896 buffer_type = karg.unique_id & 0x000000ff;
1897 if (!_ctl_diag_capability(ioc, buffer_type)) {
1898 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1899 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1900 return -EPERM;
1901 }
1902
1903 if ((ioc->diag_buffer_status[buffer_type] &
1904 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1905 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1906 "registered\n", ioc->name, __func__, buffer_type);
1907 return -EINVAL;
1908 }
1909
1910 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1911 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1912 "registered\n", ioc->name, __func__, karg.unique_id);
1913 return -EINVAL;
1914 }
1915
1916 if (ioc->diag_buffer_status[buffer_type] &
1917 MPT2_DIAG_BUFFER_IS_RELEASED) {
1918 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1919 "is already released\n", ioc->name, __func__,
1920 buffer_type);
1921 return 0;
1922 }
1923
1924 request_data = ioc->diag_buffer[buffer_type];
1925
1926 if (!request_data) {
1927 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1928 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1929 return -ENOMEM;
1930 }
1931
1932 /* buffers were released by due to host reset */
1933 if ((ioc->diag_buffer_status[buffer_type] &
1934 MPT2_DIAG_BUFFER_IS_DIAG_RESET)) {
1935 ioc->diag_buffer_status[buffer_type] |=
1936 MPT2_DIAG_BUFFER_IS_RELEASED;
1937 ioc->diag_buffer_status[buffer_type] &=
1938 ~MPT2_DIAG_BUFFER_IS_DIAG_RESET;
1939 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1940 "was released due to host reset\n", ioc->name, __func__,
1941 buffer_type);
1942 return 0;
1943 }
1944
1945 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1946 return -EAGAIN;
1947 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1948 return -ERESTARTSYS;
1949
1950 rc = _ctl_send_release(ioc, buffer_type, &issue_reset);
1951
1952 if (issue_reset)
1953 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1954 FORCE_BIG_HAMMER);
1955
1956 mutex_unlock(&ioc->ctl_cmds.mutex);
1957 return rc;
1958 }
1959
1960 /**
1961 * _ctl_diag_read_buffer - request for copy of the diag buffer
1962 * @arg - user space buffer containing ioctl content
1963 * @state - NON_BLOCKING or BLOCKING
1964 */
1965 static long
1966 _ctl_diag_read_buffer(void __user *arg, enum block_state state)
1967 {
1968 struct mpt2_diag_read_buffer karg;
1969 struct mpt2_diag_read_buffer __user *uarg = arg;
1970 struct MPT2SAS_ADAPTER *ioc;
1971 void *request_data, *diag_data;
1972 Mpi2DiagBufferPostRequest_t *mpi_request;
1973 Mpi2DiagBufferPostReply_t *mpi_reply;
1974 int rc, i;
1975 u8 buffer_type;
1976 unsigned long timeleft, request_size, copy_size;
1977 u16 smid;
1978 u16 ioc_status;
1979 u8 issue_reset = 0;
1980
1981 if (copy_from_user(&karg, arg, sizeof(karg))) {
1982 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1983 __FILE__, __LINE__, __func__);
1984 return -EFAULT;
1985 }
1986 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1987 return -ENODEV;
1988
1989 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1990 __func__));
1991
1992 buffer_type = karg.unique_id & 0x000000ff;
1993 if (!_ctl_diag_capability(ioc, buffer_type)) {
1994 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1995 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1996 return -EPERM;
1997 }
1998
1999 if (karg.unique_id != ioc->unique_id[buffer_type]) {
2000 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
2001 "registered\n", ioc->name, __func__, karg.unique_id);
2002 return -EINVAL;
2003 }
2004
2005 request_data = ioc->diag_buffer[buffer_type];
2006 if (!request_data) {
2007 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
2008 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
2009 return -ENOMEM;
2010 }
2011
2012 request_size = ioc->diag_buffer_sz[buffer_type];
2013
2014 if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
2015 printk(MPT2SAS_ERR_FMT "%s: either the starting_offset "
2016 "or bytes_to_read are not 4 byte aligned\n", ioc->name,
2017 __func__);
2018 return -EINVAL;
2019 }
2020
2021 if (karg.starting_offset > request_size)
2022 return -EINVAL;
2023
2024 diag_data = (void *)(request_data + karg.starting_offset);
2025 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: diag_buffer(%p), "
2026 "offset(%d), sz(%d)\n", ioc->name, __func__,
2027 diag_data, karg.starting_offset, karg.bytes_to_read));
2028
2029 /* Truncate data on requests that are too large */
2030 if ((diag_data + karg.bytes_to_read < diag_data) ||
2031 (diag_data + karg.bytes_to_read > request_data + request_size))
2032 copy_size = request_size - karg.starting_offset;
2033 else
2034 copy_size = karg.bytes_to_read;
2035
2036 if (copy_to_user((void __user *)uarg->diagnostic_data,
2037 diag_data, copy_size)) {
2038 printk(MPT2SAS_ERR_FMT "%s: Unable to write "
2039 "mpt_diag_read_buffer_t data @ %p\n", ioc->name,
2040 __func__, diag_data);
2041 return -EFAULT;
2042 }
2043
2044 if ((karg.flags & MPT2_FLAGS_REREGISTER) == 0)
2045 return 0;
2046
2047 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: Reregister "
2048 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type));
2049 if ((ioc->diag_buffer_status[buffer_type] &
2050 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
2051 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2052 "buffer_type(0x%02x) is still registered\n", ioc->name,
2053 __func__, buffer_type));
2054 return 0;
2055 }
2056 /* Get a free request frame and save the message context.
2057 */
2058 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
2059 return -EAGAIN;
2060 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
2061 return -ERESTARTSYS;
2062
2063 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
2064 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
2065 ioc->name, __func__);
2066 rc = -EAGAIN;
2067 goto out;
2068 }
2069
2070 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
2071 if (!smid) {
2072 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2073 ioc->name, __func__);
2074 rc = -EAGAIN;
2075 goto out;
2076 }
2077
2078 rc = 0;
2079 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
2080 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
2081 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
2082 ioc->ctl_cmds.smid = smid;
2083
2084 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
2085 mpi_request->BufferType = buffer_type;
2086 mpi_request->BufferLength =
2087 cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
2088 mpi_request->BufferAddress =
2089 cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
2090 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
2091 mpi_request->ProductSpecific[i] =
2092 cpu_to_le32(ioc->product_specific[buffer_type][i]);
2093 mpi_request->VF_ID = 0; /* TODO */
2094 mpi_request->VP_ID = 0;
2095
2096 mpt2sas_base_put_smid_default(ioc, smid);
2097 init_completion(&ioc->ctl_cmds.done);
2098 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
2099 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
2100
2101 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
2102 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
2103 __func__);
2104 _debug_dump_mf(mpi_request,
2105 sizeof(Mpi2DiagBufferPostRequest_t)/4);
2106 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
2107 issue_reset = 1;
2108 goto issue_host_reset;
2109 }
2110
2111 /* process the completed Reply Message Frame */
2112 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
2113 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
2114 ioc->name, __func__);
2115 rc = -EFAULT;
2116 goto out;
2117 }
2118
2119 mpi_reply = ioc->ctl_cmds.reply;
2120 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
2121
2122 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
2123 ioc->diag_buffer_status[buffer_type] |=
2124 MPT2_DIAG_BUFFER_IS_REGISTERED;
2125 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
2126 ioc->name, __func__));
2127 } else {
2128 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
2129 "log_info(0x%08x)\n", ioc->name, __func__,
2130 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
2131 rc = -EFAULT;
2132 }
2133
2134 issue_host_reset:
2135 if (issue_reset)
2136 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2137 FORCE_BIG_HAMMER);
2138
2139 out:
2140
2141 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
2142 mutex_unlock(&ioc->ctl_cmds.mutex);
2143 return rc;
2144 }
2145
2146 /**
2147 * _ctl_ioctl_main - main ioctl entry point
2148 * @file - (struct file)
2149 * @cmd - ioctl opcode
2150 * @arg -
2151 */
2152 static long
2153 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg)
2154 {
2155 enum block_state state;
2156 long ret = -EINVAL;
2157
2158 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING :
2159 BLOCKING;
2160
2161 switch (cmd) {
2162 case MPT2IOCINFO:
2163 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_iocinfo))
2164 ret = _ctl_getiocinfo(arg);
2165 break;
2166 case MPT2COMMAND:
2167 {
2168 struct mpt2_ioctl_command karg;
2169 struct mpt2_ioctl_command __user *uarg;
2170 struct MPT2SAS_ADAPTER *ioc;
2171
2172 if (copy_from_user(&karg, arg, sizeof(karg))) {
2173 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2174 __FILE__, __LINE__, __func__);
2175 return -EFAULT;
2176 }
2177
2178 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
2179 !ioc)
2180 return -ENODEV;
2181
2182 if (ioc->shost_recovery || ioc->pci_error_recovery)
2183 return -EAGAIN;
2184
2185 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_command)) {
2186 uarg = arg;
2187 ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
2188 }
2189 break;
2190 }
2191 case MPT2EVENTQUERY:
2192 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventquery))
2193 ret = _ctl_eventquery(arg);
2194 break;
2195 case MPT2EVENTENABLE:
2196 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventenable))
2197 ret = _ctl_eventenable(arg);
2198 break;
2199 case MPT2EVENTREPORT:
2200 ret = _ctl_eventreport(arg);
2201 break;
2202 case MPT2HARDRESET:
2203 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_diag_reset))
2204 ret = _ctl_do_reset(arg);
2205 break;
2206 case MPT2BTDHMAPPING:
2207 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_btdh_mapping))
2208 ret = _ctl_btdh_mapping(arg);
2209 break;
2210 case MPT2DIAGREGISTER:
2211 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_register))
2212 ret = _ctl_diag_register(arg, state);
2213 break;
2214 case MPT2DIAGUNREGISTER:
2215 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_unregister))
2216 ret = _ctl_diag_unregister(arg);
2217 break;
2218 case MPT2DIAGQUERY:
2219 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_query))
2220 ret = _ctl_diag_query(arg);
2221 break;
2222 case MPT2DIAGRELEASE:
2223 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_release))
2224 ret = _ctl_diag_release(arg, state);
2225 break;
2226 case MPT2DIAGREADBUFFER:
2227 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_read_buffer))
2228 ret = _ctl_diag_read_buffer(arg, state);
2229 break;
2230 default:
2231 {
2232 struct mpt2_ioctl_command karg;
2233 struct MPT2SAS_ADAPTER *ioc;
2234
2235 if (copy_from_user(&karg, arg, sizeof(karg))) {
2236 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2237 __FILE__, __LINE__, __func__);
2238 return -EFAULT;
2239 }
2240
2241 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
2242 !ioc)
2243 return -ENODEV;
2244
2245 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT
2246 "unsupported ioctl opcode(0x%08x)\n", ioc->name, cmd));
2247 break;
2248 }
2249 }
2250 return ret;
2251 }
2252
2253 /**
2254 * _ctl_ioctl - main ioctl entry point (unlocked)
2255 * @file - (struct file)
2256 * @cmd - ioctl opcode
2257 * @arg -
2258 */
2259 static long
2260 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2261 {
2262 long ret;
2263
2264 mutex_lock(&_ctl_mutex);
2265 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
2266 mutex_unlock(&_ctl_mutex);
2267 return ret;
2268 }
2269
2270 #ifdef CONFIG_COMPAT
2271 /**
2272 * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
2273 * @file - (struct file)
2274 * @cmd - ioctl opcode
2275 * @arg - (struct mpt2_ioctl_command32)
2276 *
2277 * MPT2COMMAND32 - Handle 32bit applications running on 64bit os.
2278 */
2279 static long
2280 _ctl_compat_mpt_command(struct file *file, unsigned cmd, unsigned long arg)
2281 {
2282 struct mpt2_ioctl_command32 karg32;
2283 struct mpt2_ioctl_command32 __user *uarg;
2284 struct mpt2_ioctl_command karg;
2285 struct MPT2SAS_ADAPTER *ioc;
2286 enum block_state state;
2287
2288 if (_IOC_SIZE(cmd) != sizeof(struct mpt2_ioctl_command32))
2289 return -EINVAL;
2290
2291 uarg = (struct mpt2_ioctl_command32 __user *) arg;
2292
2293 if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
2294 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2295 __FILE__, __LINE__, __func__);
2296 return -EFAULT;
2297 }
2298 if (_ctl_verify_adapter(karg32.hdr.ioc_number, &ioc) == -1 || !ioc)
2299 return -ENODEV;
2300
2301 if (ioc->shost_recovery || ioc->pci_error_recovery)
2302 return -EAGAIN;
2303
2304 memset(&karg, 0, sizeof(struct mpt2_ioctl_command));
2305 karg.hdr.ioc_number = karg32.hdr.ioc_number;
2306 karg.hdr.port_number = karg32.hdr.port_number;
2307 karg.hdr.max_data_size = karg32.hdr.max_data_size;
2308 karg.timeout = karg32.timeout;
2309 karg.max_reply_bytes = karg32.max_reply_bytes;
2310 karg.data_in_size = karg32.data_in_size;
2311 karg.data_out_size = karg32.data_out_size;
2312 karg.max_sense_bytes = karg32.max_sense_bytes;
2313 karg.data_sge_offset = karg32.data_sge_offset;
2314 karg.reply_frame_buf_ptr = compat_ptr(karg32.reply_frame_buf_ptr);
2315 karg.data_in_buf_ptr = compat_ptr(karg32.data_in_buf_ptr);
2316 karg.data_out_buf_ptr = compat_ptr(karg32.data_out_buf_ptr);
2317 karg.sense_data_ptr = compat_ptr(karg32.sense_data_ptr);
2318 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
2319 return _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
2320 }
2321
2322 /**
2323 * _ctl_ioctl_compat - main ioctl entry point (compat)
2324 * @file -
2325 * @cmd -
2326 * @arg -
2327 *
2328 * This routine handles 32 bit applications in 64bit os.
2329 */
2330 static long
2331 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2332 {
2333 long ret;
2334
2335 mutex_lock(&_ctl_mutex);
2336 if (cmd == MPT2COMMAND32)
2337 ret = _ctl_compat_mpt_command(file, cmd, arg);
2338 else
2339 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
2340 mutex_unlock(&_ctl_mutex);
2341 return ret;
2342 }
2343 #endif
2344
2345 /* scsi host attributes */
2346
2347 /**
2348 * _ctl_version_fw_show - firmware version
2349 * @cdev - pointer to embedded class device
2350 * @buf - the buffer returned
2351 *
2352 * A sysfs 'read-only' shost attribute.
2353 */
2354 static ssize_t
2355 _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr,
2356 char *buf)
2357 {
2358 struct Scsi_Host *shost = class_to_shost(cdev);
2359 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2360
2361 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2362 (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2363 (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2364 (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2365 ioc->facts.FWVersion.Word & 0x000000FF);
2366 }
2367 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL);
2368
2369 /**
2370 * _ctl_version_bios_show - bios version
2371 * @cdev - pointer to embedded class device
2372 * @buf - the buffer returned
2373 *
2374 * A sysfs 'read-only' shost attribute.
2375 */
2376 static ssize_t
2377 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr,
2378 char *buf)
2379 {
2380 struct Scsi_Host *shost = class_to_shost(cdev);
2381 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2382
2383 u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2384
2385 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2386 (version & 0xFF000000) >> 24,
2387 (version & 0x00FF0000) >> 16,
2388 (version & 0x0000FF00) >> 8,
2389 version & 0x000000FF);
2390 }
2391 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL);
2392
2393 /**
2394 * _ctl_version_mpi_show - MPI (message passing interface) version
2395 * @cdev - pointer to embedded class device
2396 * @buf - the buffer returned
2397 *
2398 * A sysfs 'read-only' shost attribute.
2399 */
2400 static ssize_t
2401 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr,
2402 char *buf)
2403 {
2404 struct Scsi_Host *shost = class_to_shost(cdev);
2405 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2406
2407 return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
2408 ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
2409 }
2410 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL);
2411
2412 /**
2413 * _ctl_version_product_show - product name
2414 * @cdev - pointer to embedded class device
2415 * @buf - the buffer returned
2416 *
2417 * A sysfs 'read-only' shost attribute.
2418 */
2419 static ssize_t
2420 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr,
2421 char *buf)
2422 {
2423 struct Scsi_Host *shost = class_to_shost(cdev);
2424 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2425
2426 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
2427 }
2428 static DEVICE_ATTR(version_product, S_IRUGO,
2429 _ctl_version_product_show, NULL);
2430
2431 /**
2432 * _ctl_version_nvdata_persistent_show - ndvata persistent version
2433 * @cdev - pointer to embedded class device
2434 * @buf - the buffer returned
2435 *
2436 * A sysfs 'read-only' shost attribute.
2437 */
2438 static ssize_t
2439 _ctl_version_nvdata_persistent_show(struct device *cdev,
2440 struct device_attribute *attr, char *buf)
2441 {
2442 struct Scsi_Host *shost = class_to_shost(cdev);
2443 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2444
2445 return snprintf(buf, PAGE_SIZE, "%08xh\n",
2446 le32_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
2447 }
2448 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
2449 _ctl_version_nvdata_persistent_show, NULL);
2450
2451 /**
2452 * _ctl_version_nvdata_default_show - nvdata default version
2453 * @cdev - pointer to embedded class device
2454 * @buf - the buffer returned
2455 *
2456 * A sysfs 'read-only' shost attribute.
2457 */
2458 static ssize_t
2459 _ctl_version_nvdata_default_show(struct device *cdev,
2460 struct device_attribute *attr, char *buf)
2461 {
2462 struct Scsi_Host *shost = class_to_shost(cdev);
2463 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2464
2465 return snprintf(buf, PAGE_SIZE, "%08xh\n",
2466 le32_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
2467 }
2468 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
2469 _ctl_version_nvdata_default_show, NULL);
2470
2471 /**
2472 * _ctl_board_name_show - board name
2473 * @cdev - pointer to embedded class device
2474 * @buf - the buffer returned
2475 *
2476 * A sysfs 'read-only' shost attribute.
2477 */
2478 static ssize_t
2479 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr,
2480 char *buf)
2481 {
2482 struct Scsi_Host *shost = class_to_shost(cdev);
2483 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2484
2485 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
2486 }
2487 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL);
2488
2489 /**
2490 * _ctl_board_assembly_show - board assembly name
2491 * @cdev - pointer to embedded class device
2492 * @buf - the buffer returned
2493 *
2494 * A sysfs 'read-only' shost attribute.
2495 */
2496 static ssize_t
2497 _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr,
2498 char *buf)
2499 {
2500 struct Scsi_Host *shost = class_to_shost(cdev);
2501 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2502
2503 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
2504 }
2505 static DEVICE_ATTR(board_assembly, S_IRUGO,
2506 _ctl_board_assembly_show, NULL);
2507
2508 /**
2509 * _ctl_board_tracer_show - board tracer number
2510 * @cdev - pointer to embedded class device
2511 * @buf - the buffer returned
2512 *
2513 * A sysfs 'read-only' shost attribute.
2514 */
2515 static ssize_t
2516 _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr,
2517 char *buf)
2518 {
2519 struct Scsi_Host *shost = class_to_shost(cdev);
2520 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2521
2522 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
2523 }
2524 static DEVICE_ATTR(board_tracer, S_IRUGO,
2525 _ctl_board_tracer_show, NULL);
2526
2527 /**
2528 * _ctl_io_delay_show - io missing delay
2529 * @cdev - pointer to embedded class device
2530 * @buf - the buffer returned
2531 *
2532 * This is for firmware implemention for deboucing device
2533 * removal events.
2534 *
2535 * A sysfs 'read-only' shost attribute.
2536 */
2537 static ssize_t
2538 _ctl_io_delay_show(struct device *cdev, struct device_attribute *attr,
2539 char *buf)
2540 {
2541 struct Scsi_Host *shost = class_to_shost(cdev);
2542 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2543
2544 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
2545 }
2546 static DEVICE_ATTR(io_delay, S_IRUGO,
2547 _ctl_io_delay_show, NULL);
2548
2549 /**
2550 * _ctl_device_delay_show - device missing delay
2551 * @cdev - pointer to embedded class device
2552 * @buf - the buffer returned
2553 *
2554 * This is for firmware implemention for deboucing device
2555 * removal events.
2556 *
2557 * A sysfs 'read-only' shost attribute.
2558 */
2559 static ssize_t
2560 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr,
2561 char *buf)
2562 {
2563 struct Scsi_Host *shost = class_to_shost(cdev);
2564 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2565
2566 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
2567 }
2568 static DEVICE_ATTR(device_delay, S_IRUGO,
2569 _ctl_device_delay_show, NULL);
2570
2571 /**
2572 * _ctl_fw_queue_depth_show - global credits
2573 * @cdev - pointer to embedded class device
2574 * @buf - the buffer returned
2575 *
2576 * This is firmware queue depth limit
2577 *
2578 * A sysfs 'read-only' shost attribute.
2579 */
2580 static ssize_t
2581 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
2582 char *buf)
2583 {
2584 struct Scsi_Host *shost = class_to_shost(cdev);
2585 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2586
2587 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
2588 }
2589 static DEVICE_ATTR(fw_queue_depth, S_IRUGO,
2590 _ctl_fw_queue_depth_show, NULL);
2591
2592 /**
2593 * _ctl_sas_address_show - sas address
2594 * @cdev - pointer to embedded class device
2595 * @buf - the buffer returned
2596 *
2597 * This is the controller sas address
2598 *
2599 * A sysfs 'read-only' shost attribute.
2600 */
2601 static ssize_t
2602 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr,
2603 char *buf)
2604 {
2605 struct Scsi_Host *shost = class_to_shost(cdev);
2606 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2607
2608 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2609 (unsigned long long)ioc->sas_hba.sas_address);
2610 }
2611 static DEVICE_ATTR(host_sas_address, S_IRUGO,
2612 _ctl_host_sas_address_show, NULL);
2613
2614 /**
2615 * _ctl_logging_level_show - logging level
2616 * @cdev - pointer to embedded class device
2617 * @buf - the buffer returned
2618 *
2619 * A sysfs 'read/write' shost attribute.
2620 */
2621 static ssize_t
2622 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr,
2623 char *buf)
2624 {
2625 struct Scsi_Host *shost = class_to_shost(cdev);
2626 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2627
2628 return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
2629 }
2630 static ssize_t
2631 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr,
2632 const char *buf, size_t count)
2633 {
2634 struct Scsi_Host *shost = class_to_shost(cdev);
2635 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2636 int val = 0;
2637
2638 if (sscanf(buf, "%x", &val) != 1)
2639 return -EINVAL;
2640
2641 ioc->logging_level = val;
2642 printk(MPT2SAS_INFO_FMT "logging_level=%08xh\n", ioc->name,
2643 ioc->logging_level);
2644 return strlen(buf);
2645 }
2646 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
2647 _ctl_logging_level_show, _ctl_logging_level_store);
2648
2649 /* device attributes */
2650 /*
2651 * _ctl_fwfault_debug_show - show/store fwfault_debug
2652 * @cdev - pointer to embedded class device
2653 * @buf - the buffer returned
2654 *
2655 * mpt2sas_fwfault_debug is command line option
2656 * A sysfs 'read/write' shost attribute.
2657 */
2658 static ssize_t
2659 _ctl_fwfault_debug_show(struct device *cdev,
2660 struct device_attribute *attr, char *buf)
2661 {
2662 struct Scsi_Host *shost = class_to_shost(cdev);
2663 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2664
2665 return snprintf(buf, PAGE_SIZE, "%d\n", ioc->fwfault_debug);
2666 }
2667 static ssize_t
2668 _ctl_fwfault_debug_store(struct device *cdev,
2669 struct device_attribute *attr, const char *buf, size_t count)
2670 {
2671 struct Scsi_Host *shost = class_to_shost(cdev);
2672 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2673 int val = 0;
2674
2675 if (sscanf(buf, "%d", &val) != 1)
2676 return -EINVAL;
2677
2678 ioc->fwfault_debug = val;
2679 printk(MPT2SAS_INFO_FMT "fwfault_debug=%d\n", ioc->name,
2680 ioc->fwfault_debug);
2681 return strlen(buf);
2682 }
2683 static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR,
2684 _ctl_fwfault_debug_show, _ctl_fwfault_debug_store);
2685
2686
2687 /**
2688 * _ctl_ioc_reset_count_show - ioc reset count
2689 * @cdev - pointer to embedded class device
2690 * @buf - the buffer returned
2691 *
2692 * This is firmware queue depth limit
2693 *
2694 * A sysfs 'read-only' shost attribute.
2695 */
2696 static ssize_t
2697 _ctl_ioc_reset_count_show(struct device *cdev, struct device_attribute *attr,
2698 char *buf)
2699 {
2700 struct Scsi_Host *shost = class_to_shost(cdev);
2701 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2702
2703 return snprintf(buf, PAGE_SIZE, "%08d\n", ioc->ioc_reset_count);
2704 }
2705 static DEVICE_ATTR(ioc_reset_count, S_IRUGO,
2706 _ctl_ioc_reset_count_show, NULL);
2707
2708 struct DIAG_BUFFER_START {
2709 u32 Size;
2710 u32 DiagVersion;
2711 u8 BufferType;
2712 u8 Reserved[3];
2713 u32 Reserved1;
2714 u32 Reserved2;
2715 u32 Reserved3;
2716 };
2717 /**
2718 * _ctl_host_trace_buffer_size_show - host buffer size (trace only)
2719 * @cdev - pointer to embedded class device
2720 * @buf - the buffer returned
2721 *
2722 * A sysfs 'read-only' shost attribute.
2723 */
2724 static ssize_t
2725 _ctl_host_trace_buffer_size_show(struct device *cdev,
2726 struct device_attribute *attr, char *buf)
2727 {
2728 struct Scsi_Host *shost = class_to_shost(cdev);
2729 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2730 u32 size = 0;
2731 struct DIAG_BUFFER_START *request_data;
2732
2733 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2734 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2735 "registered\n", ioc->name, __func__);
2736 return 0;
2737 }
2738
2739 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2740 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
2741 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2742 "registered\n", ioc->name, __func__);
2743 return 0;
2744 }
2745
2746 request_data = (struct DIAG_BUFFER_START *)
2747 ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE];
2748 if ((le32_to_cpu(request_data->DiagVersion) == 0x00000000 ||
2749 le32_to_cpu(request_data->DiagVersion) == 0x01000000) &&
2750 le32_to_cpu(request_data->Reserved3) == 0x4742444c)
2751 size = le32_to_cpu(request_data->Size);
2752
2753 ioc->ring_buffer_sz = size;
2754 return snprintf(buf, PAGE_SIZE, "%d\n", size);
2755 }
2756 static DEVICE_ATTR(host_trace_buffer_size, S_IRUGO,
2757 _ctl_host_trace_buffer_size_show, NULL);
2758
2759 /**
2760 * _ctl_host_trace_buffer_show - firmware ring buffer (trace only)
2761 * @cdev - pointer to embedded class device
2762 * @buf - the buffer returned
2763 *
2764 * A sysfs 'read/write' shost attribute.
2765 *
2766 * You will only be able to read 4k bytes of ring buffer at a time.
2767 * In order to read beyond 4k bytes, you will have to write out the
2768 * offset to the same attribute, it will move the pointer.
2769 */
2770 static ssize_t
2771 _ctl_host_trace_buffer_show(struct device *cdev, struct device_attribute *attr,
2772 char *buf)
2773 {
2774 struct Scsi_Host *shost = class_to_shost(cdev);
2775 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2776 void *request_data;
2777 u32 size;
2778
2779 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2780 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2781 "registered\n", ioc->name, __func__);
2782 return 0;
2783 }
2784
2785 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2786 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
2787 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2788 "registered\n", ioc->name, __func__);
2789 return 0;
2790 }
2791
2792 if (ioc->ring_buffer_offset > ioc->ring_buffer_sz)
2793 return 0;
2794
2795 size = ioc->ring_buffer_sz - ioc->ring_buffer_offset;
2796 size = (size > PAGE_SIZE) ? PAGE_SIZE : size;
2797 request_data = ioc->diag_buffer[0] + ioc->ring_buffer_offset;
2798 memcpy(buf, request_data, size);
2799 return size;
2800 }
2801
2802 static ssize_t
2803 _ctl_host_trace_buffer_store(struct device *cdev, struct device_attribute *attr,
2804 const char *buf, size_t count)
2805 {
2806 struct Scsi_Host *shost = class_to_shost(cdev);
2807 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2808 int val = 0;
2809
2810 if (sscanf(buf, "%d", &val) != 1)
2811 return -EINVAL;
2812
2813 ioc->ring_buffer_offset = val;
2814 return strlen(buf);
2815 }
2816 static DEVICE_ATTR(host_trace_buffer, S_IRUGO | S_IWUSR,
2817 _ctl_host_trace_buffer_show, _ctl_host_trace_buffer_store);
2818
2819 /*****************************************/
2820
2821 /**
2822 * _ctl_host_trace_buffer_enable_show - firmware ring buffer (trace only)
2823 * @cdev - pointer to embedded class device
2824 * @buf - the buffer returned
2825 *
2826 * A sysfs 'read/write' shost attribute.
2827 *
2828 * This is a mechnism to post/release host_trace_buffers
2829 */
2830 static ssize_t
2831 _ctl_host_trace_buffer_enable_show(struct device *cdev,
2832 struct device_attribute *attr, char *buf)
2833 {
2834 struct Scsi_Host *shost = class_to_shost(cdev);
2835 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2836
2837 if ((!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) ||
2838 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2839 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0))
2840 return snprintf(buf, PAGE_SIZE, "off\n");
2841 else if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2842 MPT2_DIAG_BUFFER_IS_RELEASED))
2843 return snprintf(buf, PAGE_SIZE, "release\n");
2844 else
2845 return snprintf(buf, PAGE_SIZE, "post\n");
2846 }
2847
2848 static ssize_t
2849 _ctl_host_trace_buffer_enable_store(struct device *cdev,
2850 struct device_attribute *attr, const char *buf, size_t count)
2851 {
2852 struct Scsi_Host *shost = class_to_shost(cdev);
2853 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2854 char str[10] = "";
2855 struct mpt2_diag_register diag_register;
2856 u8 issue_reset = 0;
2857
2858 if (sscanf(buf, "%s", str) != 1)
2859 return -EINVAL;
2860
2861 if (!strcmp(str, "post")) {
2862 /* exit out if host buffers are already posted */
2863 if ((ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) &&
2864 (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2865 MPT2_DIAG_BUFFER_IS_REGISTERED) &&
2866 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2867 MPT2_DIAG_BUFFER_IS_RELEASED) == 0))
2868 goto out;
2869 memset(&diag_register, 0, sizeof(struct mpt2_diag_register));
2870 printk(MPT2SAS_INFO_FMT "posting host trace buffers\n",
2871 ioc->name);
2872 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
2873 diag_register.requested_buffer_size = (1024 * 1024);
2874 diag_register.unique_id = 0x7075900;
2875 ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] = 0;
2876 _ctl_diag_register_2(ioc, &diag_register);
2877 } else if (!strcmp(str, "release")) {
2878 /* exit out if host buffers are already released */
2879 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE])
2880 goto out;
2881 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2882 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0)
2883 goto out;
2884 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2885 MPT2_DIAG_BUFFER_IS_RELEASED))
2886 goto out;
2887 printk(MPT2SAS_INFO_FMT "releasing host trace buffer\n",
2888 ioc->name);
2889 _ctl_send_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE, &issue_reset);
2890 }
2891
2892 out:
2893 return strlen(buf);
2894 }
2895 static DEVICE_ATTR(host_trace_buffer_enable, S_IRUGO | S_IWUSR,
2896 _ctl_host_trace_buffer_enable_show, _ctl_host_trace_buffer_enable_store);
2897
2898 struct device_attribute *mpt2sas_host_attrs[] = {
2899 &dev_attr_version_fw,
2900 &dev_attr_version_bios,
2901 &dev_attr_version_mpi,
2902 &dev_attr_version_product,
2903 &dev_attr_version_nvdata_persistent,
2904 &dev_attr_version_nvdata_default,
2905 &dev_attr_board_name,
2906 &dev_attr_board_assembly,
2907 &dev_attr_board_tracer,
2908 &dev_attr_io_delay,
2909 &dev_attr_device_delay,
2910 &dev_attr_logging_level,
2911 &dev_attr_fwfault_debug,
2912 &dev_attr_fw_queue_depth,
2913 &dev_attr_host_sas_address,
2914 &dev_attr_ioc_reset_count,
2915 &dev_attr_host_trace_buffer_size,
2916 &dev_attr_host_trace_buffer,
2917 &dev_attr_host_trace_buffer_enable,
2918 NULL,
2919 };
2920
2921 /**
2922 * _ctl_device_sas_address_show - sas address
2923 * @cdev - pointer to embedded class device
2924 * @buf - the buffer returned
2925 *
2926 * This is the sas address for the target
2927 *
2928 * A sysfs 'read-only' shost attribute.
2929 */
2930 static ssize_t
2931 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr,
2932 char *buf)
2933 {
2934 struct scsi_device *sdev = to_scsi_device(dev);
2935 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2936
2937 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2938 (unsigned long long)sas_device_priv_data->sas_target->sas_address);
2939 }
2940 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL);
2941
2942 /**
2943 * _ctl_device_handle_show - device handle
2944 * @cdev - pointer to embedded class device
2945 * @buf - the buffer returned
2946 *
2947 * This is the firmware assigned device handle
2948 *
2949 * A sysfs 'read-only' shost attribute.
2950 */
2951 static ssize_t
2952 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr,
2953 char *buf)
2954 {
2955 struct scsi_device *sdev = to_scsi_device(dev);
2956 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2957
2958 return snprintf(buf, PAGE_SIZE, "0x%04x\n",
2959 sas_device_priv_data->sas_target->handle);
2960 }
2961 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL);
2962
2963 struct device_attribute *mpt2sas_dev_attrs[] = {
2964 &dev_attr_sas_address,
2965 &dev_attr_sas_device_handle,
2966 NULL,
2967 };
2968
2969 static const struct file_operations ctl_fops = {
2970 .owner = THIS_MODULE,
2971 .unlocked_ioctl = _ctl_ioctl,
2972 .release = _ctl_release,
2973 .poll = _ctl_poll,
2974 .fasync = _ctl_fasync,
2975 #ifdef CONFIG_COMPAT
2976 .compat_ioctl = _ctl_ioctl_compat,
2977 #endif
2978 .llseek = noop_llseek,
2979 };
2980
2981 static struct miscdevice ctl_dev = {
2982 .minor = MPT2SAS_MINOR,
2983 .name = MPT2SAS_DEV_NAME,
2984 .fops = &ctl_fops,
2985 };
2986
2987 /**
2988 * mpt2sas_ctl_init - main entry point for ctl.
2989 *
2990 */
2991 void
2992 mpt2sas_ctl_init(void)
2993 {
2994 async_queue = NULL;
2995 if (misc_register(&ctl_dev) < 0)
2996 printk(KERN_ERR "%s can't register misc device [minor=%d]\n",
2997 MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
2998
2999 init_waitqueue_head(&ctl_poll_wait);
3000 }
3001
3002 /**
3003 * mpt2sas_ctl_exit - exit point for ctl
3004 *
3005 */
3006 void
3007 mpt2sas_ctl_exit(void)
3008 {
3009 struct MPT2SAS_ADAPTER *ioc;
3010 int i;
3011
3012 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
3013
3014 /* free memory associated to diag buffers */
3015 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
3016 if (!ioc->diag_buffer[i])
3017 continue;
3018 pci_free_consistent(ioc->pdev, ioc->diag_buffer_sz[i],
3019 ioc->diag_buffer[i], ioc->diag_buffer_dma[i]);
3020 ioc->diag_buffer[i] = NULL;
3021 ioc->diag_buffer_status[i] = 0;
3022 }
3023
3024 kfree(ioc->event_log);
3025 }
3026 misc_deregister(&ctl_dev);
3027 }
3028
Linux kernel - Deliverables
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