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mic: vop: Fix use-after-free on remove
[linux/fpc-iii.git] / drivers / scsi / mpt3sas / mpt3sas_ctl.c
blobb2bb47c14d35a322c3d8531fb19d336b72c4ee32
1 /*
2 * Management Module Support for MPT (Message Passing Technology) based
3 * controllers
4 *
5 * This code is based on drivers/scsi/mpt3sas/mpt3sas_ctl.c
6 * Copyright (C) 2012-2014 LSI Corporation
7 * Copyright (C) 2013-2014 Avago Technologies
8 * (mailto: MPT-FusionLinux.pdl@avagotech.com)
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version 2
13 * of the License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * NO WARRANTY
21 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
22 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
23 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
24 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
25 * solely responsible for determining the appropriateness of using and
26 * distributing the Program and assumes all risks associated with its
27 * exercise of rights under this Agreement, including but not limited to
28 * the risks and costs of program errors, damage to or loss of data,
29 * programs or equipment, and unavailability or interruption of operations.
30
31 * DISCLAIMER OF LIABILITY
32 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
33 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
35 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
36 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
37 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
38 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
39
40 * You should have received a copy of the GNU General Public License
41 * along with this program; if not, write to the Free Software
42 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
43 * USA.
44 */
45
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/compat.h>
55 #include <linux/poll.h>
56
57 #include <linux/io.h>
58 #include <linux/uaccess.h>
59
60 #include "mpt3sas_base.h"
61 #include "mpt3sas_ctl.h"
62
63
64 static struct fasync_struct *async_queue;
65 static DECLARE_WAIT_QUEUE_HEAD(ctl_poll_wait);
66
67
68 /**
69 * enum block_state - blocking state
70 * @NON_BLOCKING: non blocking
71 * @BLOCKING: blocking
72 *
73 * These states are for ioctls that need to wait for a response
74 * from firmware, so they probably require sleep.
75 */
76 enum block_state {
77 NON_BLOCKING,
78 BLOCKING,
79 };
80
81 /**
82 * _ctl_display_some_debug - debug routine
83 * @ioc: per adapter object
84 * @smid: system request message index
85 * @calling_function_name: string pass from calling function
86 * @mpi_reply: reply message frame
87 * Context: none.
88 *
89 * Function for displaying debug info helpful when debugging issues
90 * in this module.
91 */
92 static void
93 _ctl_display_some_debug(struct MPT3SAS_ADAPTER *ioc, u16 smid,
94 char *calling_function_name, MPI2DefaultReply_t *mpi_reply)
95 {
96 Mpi2ConfigRequest_t *mpi_request;
97 char *desc = NULL;
98
99 if (!(ioc->logging_level & MPT_DEBUG_IOCTL))
100 return;
101
102 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
103 switch (mpi_request->Function) {
104 case MPI2_FUNCTION_SCSI_IO_REQUEST:
105 {
106 Mpi2SCSIIORequest_t *scsi_request =
107 (Mpi2SCSIIORequest_t *)mpi_request;
108
109 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
110 "scsi_io, cmd(0x%02x), cdb_len(%d)",
111 scsi_request->CDB.CDB32[0],
112 le16_to_cpu(scsi_request->IoFlags) & 0xF);
113 desc = ioc->tmp_string;
114 break;
115 }
116 case MPI2_FUNCTION_SCSI_TASK_MGMT:
117 desc = "task_mgmt";
118 break;
119 case MPI2_FUNCTION_IOC_INIT:
120 desc = "ioc_init";
121 break;
122 case MPI2_FUNCTION_IOC_FACTS:
123 desc = "ioc_facts";
124 break;
125 case MPI2_FUNCTION_CONFIG:
126 {
127 Mpi2ConfigRequest_t *config_request =
128 (Mpi2ConfigRequest_t *)mpi_request;
129
130 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
131 "config, type(0x%02x), ext_type(0x%02x), number(%d)",
132 (config_request->Header.PageType &
133 MPI2_CONFIG_PAGETYPE_MASK), config_request->ExtPageType,
134 config_request->Header.PageNumber);
135 desc = ioc->tmp_string;
136 break;
137 }
138 case MPI2_FUNCTION_PORT_FACTS:
139 desc = "port_facts";
140 break;
141 case MPI2_FUNCTION_PORT_ENABLE:
142 desc = "port_enable";
143 break;
144 case MPI2_FUNCTION_EVENT_NOTIFICATION:
145 desc = "event_notification";
146 break;
147 case MPI2_FUNCTION_FW_DOWNLOAD:
148 desc = "fw_download";
149 break;
150 case MPI2_FUNCTION_FW_UPLOAD:
151 desc = "fw_upload";
152 break;
153 case MPI2_FUNCTION_RAID_ACTION:
154 desc = "raid_action";
155 break;
156 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
157 {
158 Mpi2SCSIIORequest_t *scsi_request =
159 (Mpi2SCSIIORequest_t *)mpi_request;
160
161 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
162 "raid_pass, cmd(0x%02x), cdb_len(%d)",
163 scsi_request->CDB.CDB32[0],
164 le16_to_cpu(scsi_request->IoFlags) & 0xF);
165 desc = ioc->tmp_string;
166 break;
167 }
168 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
169 desc = "sas_iounit_cntl";
170 break;
171 case MPI2_FUNCTION_SATA_PASSTHROUGH:
172 desc = "sata_pass";
173 break;
174 case MPI2_FUNCTION_DIAG_BUFFER_POST:
175 desc = "diag_buffer_post";
176 break;
177 case MPI2_FUNCTION_DIAG_RELEASE:
178 desc = "diag_release";
179 break;
180 case MPI2_FUNCTION_SMP_PASSTHROUGH:
181 desc = "smp_passthrough";
182 break;
183 }
184
185 if (!desc)
186 return;
187
188 ioc_info(ioc, "%s: %s, smid(%d)\n", calling_function_name, desc, smid);
189
190 if (!mpi_reply)
191 return;
192
193 if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo)
194 ioc_info(ioc, "\tiocstatus(0x%04x), loginfo(0x%08x)\n",
195 le16_to_cpu(mpi_reply->IOCStatus),
196 le32_to_cpu(mpi_reply->IOCLogInfo));
197
198 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
199 mpi_request->Function ==
200 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
201 Mpi2SCSIIOReply_t *scsi_reply =
202 (Mpi2SCSIIOReply_t *)mpi_reply;
203 struct _sas_device *sas_device = NULL;
204 struct _pcie_device *pcie_device = NULL;
205
206 sas_device = mpt3sas_get_sdev_by_handle(ioc,
207 le16_to_cpu(scsi_reply->DevHandle));
208 if (sas_device) {
209 ioc_warn(ioc, "\tsas_address(0x%016llx), phy(%d)\n",
210 (u64)sas_device->sas_address,
211 sas_device->phy);
212 ioc_warn(ioc, "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
213 (u64)sas_device->enclosure_logical_id,
214 sas_device->slot);
215 sas_device_put(sas_device);
216 }
217 if (!sas_device) {
218 pcie_device = mpt3sas_get_pdev_by_handle(ioc,
219 le16_to_cpu(scsi_reply->DevHandle));
220 if (pcie_device) {
221 ioc_warn(ioc, "\tWWID(0x%016llx), port(%d)\n",
222 (unsigned long long)pcie_device->wwid,
223 pcie_device->port_num);
224 if (pcie_device->enclosure_handle != 0)
225 ioc_warn(ioc, "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
226 (u64)pcie_device->enclosure_logical_id,
227 pcie_device->slot);
228 pcie_device_put(pcie_device);
229 }
230 }
231 if (scsi_reply->SCSIState || scsi_reply->SCSIStatus)
232 ioc_info(ioc, "\tscsi_state(0x%02x), scsi_status(0x%02x)\n",
233 scsi_reply->SCSIState,
234 scsi_reply->SCSIStatus);
235 }
236 }
237
238 /**
239 * mpt3sas_ctl_done - ctl module completion routine
240 * @ioc: per adapter object
241 * @smid: system request message index
242 * @msix_index: MSIX table index supplied by the OS
243 * @reply: reply message frame(lower 32bit addr)
244 * Context: none.
245 *
246 * The callback handler when using ioc->ctl_cb_idx.
247 *
248 * Return: 1 meaning mf should be freed from _base_interrupt
249 * 0 means the mf is freed from this function.
250 */
251 u8
252 mpt3sas_ctl_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
253 u32 reply)
254 {
255 MPI2DefaultReply_t *mpi_reply;
256 Mpi2SCSIIOReply_t *scsiio_reply;
257 Mpi26NVMeEncapsulatedErrorReply_t *nvme_error_reply;
258 const void *sense_data;
259 u32 sz;
260
261 if (ioc->ctl_cmds.status == MPT3_CMD_NOT_USED)
262 return 1;
263 if (ioc->ctl_cmds.smid != smid)
264 return 1;
265 ioc->ctl_cmds.status |= MPT3_CMD_COMPLETE;
266 mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
267 if (mpi_reply) {
268 memcpy(ioc->ctl_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
269 ioc->ctl_cmds.status |= MPT3_CMD_REPLY_VALID;
270 /* get sense data */
271 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
272 mpi_reply->Function ==
273 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
274 scsiio_reply = (Mpi2SCSIIOReply_t *)mpi_reply;
275 if (scsiio_reply->SCSIState &
276 MPI2_SCSI_STATE_AUTOSENSE_VALID) {
277 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
278 le32_to_cpu(scsiio_reply->SenseCount));
279 sense_data = mpt3sas_base_get_sense_buffer(ioc,
280 smid);
281 memcpy(ioc->ctl_cmds.sense, sense_data, sz);
282 }
283 }
284 /*
285 * Get Error Response data for NVMe device. The ctl_cmds.sense
286 * buffer is used to store the Error Response data.
287 */
288 if (mpi_reply->Function == MPI2_FUNCTION_NVME_ENCAPSULATED) {
289 nvme_error_reply =
290 (Mpi26NVMeEncapsulatedErrorReply_t *)mpi_reply;
291 sz = min_t(u32, NVME_ERROR_RESPONSE_SIZE,
292 le16_to_cpu(nvme_error_reply->ErrorResponseCount));
293 sense_data = mpt3sas_base_get_sense_buffer(ioc, smid);
294 memcpy(ioc->ctl_cmds.sense, sense_data, sz);
295 }
296 }
297
298 _ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply);
299 ioc->ctl_cmds.status &= ~MPT3_CMD_PENDING;
300 complete(&ioc->ctl_cmds.done);
301 return 1;
302 }
303
304 /**
305 * _ctl_check_event_type - determines when an event needs logging
306 * @ioc: per adapter object
307 * @event: firmware event
308 *
309 * The bitmask in ioc->event_type[] indicates which events should be
310 * be saved in the driver event_log. This bitmask is set by application.
311 *
312 * Return: 1 when event should be captured, or zero means no match.
313 */
314 static int
315 _ctl_check_event_type(struct MPT3SAS_ADAPTER *ioc, u16 event)
316 {
317 u16 i;
318 u32 desired_event;
319
320 if (event >= 128 || !event || !ioc->event_log)
321 return 0;
322
323 desired_event = (1 << (event % 32));
324 if (!desired_event)
325 desired_event = 1;
326 i = event / 32;
327 return desired_event & ioc->event_type[i];
328 }
329
330 /**
331 * mpt3sas_ctl_add_to_event_log - add event
332 * @ioc: per adapter object
333 * @mpi_reply: reply message frame
334 */
335 void
336 mpt3sas_ctl_add_to_event_log(struct MPT3SAS_ADAPTER *ioc,
337 Mpi2EventNotificationReply_t *mpi_reply)
338 {
339 struct MPT3_IOCTL_EVENTS *event_log;
340 u16 event;
341 int i;
342 u32 sz, event_data_sz;
343 u8 send_aen = 0;
344
345 if (!ioc->event_log)
346 return;
347
348 event = le16_to_cpu(mpi_reply->Event);
349
350 if (_ctl_check_event_type(ioc, event)) {
351
352 /* insert entry into circular event_log */
353 i = ioc->event_context % MPT3SAS_CTL_EVENT_LOG_SIZE;
354 event_log = ioc->event_log;
355 event_log[i].event = event;
356 event_log[i].context = ioc->event_context++;
357
358 event_data_sz = le16_to_cpu(mpi_reply->EventDataLength)*4;
359 sz = min_t(u32, event_data_sz, MPT3_EVENT_DATA_SIZE);
360 memset(event_log[i].data, 0, MPT3_EVENT_DATA_SIZE);
361 memcpy(event_log[i].data, mpi_reply->EventData, sz);
362 send_aen = 1;
363 }
364
365 /* This aen_event_read_flag flag is set until the
366 * application has read the event log.
367 * For MPI2_EVENT_LOG_ENTRY_ADDED, we always notify.
368 */
369 if (event == MPI2_EVENT_LOG_ENTRY_ADDED ||
370 (send_aen && !ioc->aen_event_read_flag)) {
371 ioc->aen_event_read_flag = 1;
372 wake_up_interruptible(&ctl_poll_wait);
373 if (async_queue)
374 kill_fasync(&async_queue, SIGIO, POLL_IN);
375 }
376 }
377
378 /**
379 * mpt3sas_ctl_event_callback - firmware event handler (called at ISR time)
380 * @ioc: per adapter object
381 * @msix_index: MSIX table index supplied by the OS
382 * @reply: reply message frame(lower 32bit addr)
383 * Context: interrupt.
384 *
385 * This function merely adds a new work task into ioc->firmware_event_thread.
386 * The tasks are worked from _firmware_event_work in user context.
387 *
388 * Return: 1 meaning mf should be freed from _base_interrupt
389 * 0 means the mf is freed from this function.
390 */
391 u8
392 mpt3sas_ctl_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
393 u32 reply)
394 {
395 Mpi2EventNotificationReply_t *mpi_reply;
396
397 mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
398 if (mpi_reply)
399 mpt3sas_ctl_add_to_event_log(ioc, mpi_reply);
400 return 1;
401 }
402
403 /**
404 * _ctl_verify_adapter - validates ioc_number passed from application
405 * @ioc_number: ?
406 * @iocpp: The ioc pointer is returned in this.
407 * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device &
408 * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device.
409 *
410 * Return: (-1) means error, else ioc_number.
411 */
412 static int
413 _ctl_verify_adapter(int ioc_number, struct MPT3SAS_ADAPTER **iocpp,
414 int mpi_version)
415 {
416 struct MPT3SAS_ADAPTER *ioc;
417 int version = 0;
418 /* global ioc lock to protect controller on list operations */
419 spin_lock(&gioc_lock);
420 list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
421 if (ioc->id != ioc_number)
422 continue;
423 /* Check whether this ioctl command is from right
424 * ioctl device or not, if not continue the search.
425 */
426 version = ioc->hba_mpi_version_belonged;
427 /* MPI25_VERSION and MPI26_VERSION uses same ioctl
428 * device.
429 */
430 if (mpi_version == (MPI25_VERSION | MPI26_VERSION)) {
431 if ((version == MPI25_VERSION) ||
432 (version == MPI26_VERSION))
433 goto out;
434 else
435 continue;
436 } else {
437 if (version != mpi_version)
438 continue;
439 }
440 out:
441 spin_unlock(&gioc_lock);
442 *iocpp = ioc;
443 return ioc_number;
444 }
445 spin_unlock(&gioc_lock);
446 *iocpp = NULL;
447 return -1;
448 }
449
450 /**
451 * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
452 * @ioc: per adapter object
453 *
454 * The handler for doing any required cleanup or initialization.
455 */
456 void mpt3sas_ctl_pre_reset_handler(struct MPT3SAS_ADAPTER *ioc)
457 {
458 int i;
459 u8 issue_reset;
460
461 dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_PRE_RESET\n", __func__));
462 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
463 if (!(ioc->diag_buffer_status[i] &
464 MPT3_DIAG_BUFFER_IS_REGISTERED))
465 continue;
466 if ((ioc->diag_buffer_status[i] &
467 MPT3_DIAG_BUFFER_IS_RELEASED))
468 continue;
469 mpt3sas_send_diag_release(ioc, i, &issue_reset);
470 }
471 }
472
473 /**
474 * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
475 * @ioc: per adapter object
476 *
477 * The handler for doing any required cleanup or initialization.
478 */
479 void mpt3sas_ctl_after_reset_handler(struct MPT3SAS_ADAPTER *ioc)
480 {
481 dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_AFTER_RESET\n", __func__));
482 if (ioc->ctl_cmds.status & MPT3_CMD_PENDING) {
483 ioc->ctl_cmds.status |= MPT3_CMD_RESET;
484 mpt3sas_base_free_smid(ioc, ioc->ctl_cmds.smid);
485 complete(&ioc->ctl_cmds.done);
486 }
487 }
488
489 /**
490 * mpt3sas_ctl_reset_handler - reset callback handler (for ctl)
491 * @ioc: per adapter object
492 *
493 * The handler for doing any required cleanup or initialization.
494 */
495 void mpt3sas_ctl_reset_done_handler(struct MPT3SAS_ADAPTER *ioc)
496 {
497 int i;
498
499 dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_DONE_RESET\n", __func__));
500
501 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
502 if (!(ioc->diag_buffer_status[i] &
503 MPT3_DIAG_BUFFER_IS_REGISTERED))
504 continue;
505 if ((ioc->diag_buffer_status[i] &
506 MPT3_DIAG_BUFFER_IS_RELEASED))
507 continue;
508 ioc->diag_buffer_status[i] |=
509 MPT3_DIAG_BUFFER_IS_DIAG_RESET;
510 }
511 }
512
513 /**
514 * _ctl_fasync -
515 * @fd: ?
516 * @filep: ?
517 * @mode: ?
518 *
519 * Called when application request fasyn callback handler.
520 */
521 static int
522 _ctl_fasync(int fd, struct file *filep, int mode)
523 {
524 return fasync_helper(fd, filep, mode, &async_queue);
525 }
526
527 /**
528 * _ctl_poll -
529 * @filep: ?
530 * @wait: ?
531 *
532 */
533 static __poll_t
534 _ctl_poll(struct file *filep, poll_table *wait)
535 {
536 struct MPT3SAS_ADAPTER *ioc;
537
538 poll_wait(filep, &ctl_poll_wait, wait);
539
540 /* global ioc lock to protect controller on list operations */
541 spin_lock(&gioc_lock);
542 list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
543 if (ioc->aen_event_read_flag) {
544 spin_unlock(&gioc_lock);
545 return EPOLLIN | EPOLLRDNORM;
546 }
547 }
548 spin_unlock(&gioc_lock);
549 return 0;
550 }
551
552 /**
553 * _ctl_set_task_mid - assign an active smid to tm request
554 * @ioc: per adapter object
555 * @karg: (struct mpt3_ioctl_command)
556 * @tm_request: pointer to mf from user space
557 *
558 * Return: 0 when an smid if found, else fail.
559 * during failure, the reply frame is filled.
560 */
561 static int
562 _ctl_set_task_mid(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command *karg,
563 Mpi2SCSITaskManagementRequest_t *tm_request)
564 {
565 u8 found = 0;
566 u16 smid;
567 u16 handle;
568 struct scsi_cmnd *scmd;
569 struct MPT3SAS_DEVICE *priv_data;
570 Mpi2SCSITaskManagementReply_t *tm_reply;
571 u32 sz;
572 u32 lun;
573 char *desc = NULL;
574
575 if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
576 desc = "abort_task";
577 else if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
578 desc = "query_task";
579 else
580 return 0;
581
582 lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN);
583
584 handle = le16_to_cpu(tm_request->DevHandle);
585 for (smid = ioc->scsiio_depth; smid && !found; smid--) {
586 struct scsiio_tracker *st;
587
588 scmd = mpt3sas_scsih_scsi_lookup_get(ioc, smid);
589 if (!scmd)
590 continue;
591 if (lun != scmd->device->lun)
592 continue;
593 priv_data = scmd->device->hostdata;
594 if (priv_data->sas_target == NULL)
595 continue;
596 if (priv_data->sas_target->handle != handle)
597 continue;
598 st = scsi_cmd_priv(scmd);
599 tm_request->TaskMID = cpu_to_le16(st->smid);
600 found = 1;
601 }
602
603 if (!found) {
604 dctlprintk(ioc,
605 ioc_info(ioc, "%s: handle(0x%04x), lun(%d), no active mid!!\n",
606 desc, le16_to_cpu(tm_request->DevHandle),
607 lun));
608 tm_reply = ioc->ctl_cmds.reply;
609 tm_reply->DevHandle = tm_request->DevHandle;
610 tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
611 tm_reply->TaskType = tm_request->TaskType;
612 tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4;
613 tm_reply->VP_ID = tm_request->VP_ID;
614 tm_reply->VF_ID = tm_request->VF_ID;
615 sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz);
616 if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply,
617 sz))
618 pr_err("failure at %s:%d/%s()!\n", __FILE__,
619 __LINE__, __func__);
620 return 1;
621 }
622
623 dctlprintk(ioc,
624 ioc_info(ioc, "%s: handle(0x%04x), lun(%d), task_mid(%d)\n",
625 desc, le16_to_cpu(tm_request->DevHandle), lun,
626 le16_to_cpu(tm_request->TaskMID)));
627 return 0;
628 }
629
630 /**
631 * _ctl_do_mpt_command - main handler for MPT3COMMAND opcode
632 * @ioc: per adapter object
633 * @karg: (struct mpt3_ioctl_command)
634 * @mf: pointer to mf in user space
635 */
636 static long
637 _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg,
638 void __user *mf)
639 {
640 MPI2RequestHeader_t *mpi_request = NULL, *request;
641 MPI2DefaultReply_t *mpi_reply;
642 Mpi26NVMeEncapsulatedRequest_t *nvme_encap_request = NULL;
643 struct _pcie_device *pcie_device = NULL;
644 u16 smid;
645 u8 timeout;
646 u8 issue_reset;
647 u32 sz, sz_arg;
648 void *psge;
649 void *data_out = NULL;
650 dma_addr_t data_out_dma = 0;
651 size_t data_out_sz = 0;
652 void *data_in = NULL;
653 dma_addr_t data_in_dma = 0;
654 size_t data_in_sz = 0;
655 long ret;
656 u16 device_handle = MPT3SAS_INVALID_DEVICE_HANDLE;
657 u8 tr_method = MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE;
658
659 issue_reset = 0;
660
661 if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
662 ioc_err(ioc, "%s: ctl_cmd in use\n", __func__);
663 ret = -EAGAIN;
664 goto out;
665 }
666
667 ret = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT);
668 if (ret)
669 goto out;
670
671 mpi_request = kzalloc(ioc->request_sz, GFP_KERNEL);
672 if (!mpi_request) {
673 ioc_err(ioc, "%s: failed obtaining a memory for mpi_request\n",
674 __func__);
675 ret = -ENOMEM;
676 goto out;
677 }
678
679 /* Check for overflow and wraparound */
680 if (karg.data_sge_offset * 4 > ioc->request_sz ||
681 karg.data_sge_offset > (UINT_MAX / 4)) {
682 ret = -EINVAL;
683 goto out;
684 }
685
686 /* copy in request message frame from user */
687 if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) {
688 pr_err("failure at %s:%d/%s()!\n", __FILE__, __LINE__,
689 __func__);
690 ret = -EFAULT;
691 goto out;
692 }
693
694 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
695 smid = mpt3sas_base_get_smid_hpr(ioc, ioc->ctl_cb_idx);
696 if (!smid) {
697 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
698 ret = -EAGAIN;
699 goto out;
700 }
701 } else {
702 /* Use first reserved smid for passthrough ioctls */
703 smid = ioc->scsiio_depth - INTERNAL_SCSIIO_CMDS_COUNT + 1;
704 }
705
706 ret = 0;
707 ioc->ctl_cmds.status = MPT3_CMD_PENDING;
708 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
709 request = mpt3sas_base_get_msg_frame(ioc, smid);
710 memcpy(request, mpi_request, karg.data_sge_offset*4);
711 ioc->ctl_cmds.smid = smid;
712 data_out_sz = karg.data_out_size;
713 data_in_sz = karg.data_in_size;
714
715 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
716 mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
717 mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT ||
718 mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH ||
719 mpi_request->Function == MPI2_FUNCTION_NVME_ENCAPSULATED) {
720
721 device_handle = le16_to_cpu(mpi_request->FunctionDependent1);
722 if (!device_handle || (device_handle >
723 ioc->facts.MaxDevHandle)) {
724 ret = -EINVAL;
725 mpt3sas_base_free_smid(ioc, smid);
726 goto out;
727 }
728 }
729
730 /* obtain dma-able memory for data transfer */
731 if (data_out_sz) /* WRITE */ {
732 data_out = dma_alloc_coherent(&ioc->pdev->dev, data_out_sz,
733 &data_out_dma, GFP_KERNEL);
734 if (!data_out) {
735 pr_err("failure at %s:%d/%s()!\n", __FILE__,
736 __LINE__, __func__);
737 ret = -ENOMEM;
738 mpt3sas_base_free_smid(ioc, smid);
739 goto out;
740 }
741 if (copy_from_user(data_out, karg.data_out_buf_ptr,
742 data_out_sz)) {
743 pr_err("failure at %s:%d/%s()!\n", __FILE__,
744 __LINE__, __func__);
745 ret = -EFAULT;
746 mpt3sas_base_free_smid(ioc, smid);
747 goto out;
748 }
749 }
750
751 if (data_in_sz) /* READ */ {
752 data_in = dma_alloc_coherent(&ioc->pdev->dev, data_in_sz,
753 &data_in_dma, GFP_KERNEL);
754 if (!data_in) {
755 pr_err("failure at %s:%d/%s()!\n", __FILE__,
756 __LINE__, __func__);
757 ret = -ENOMEM;
758 mpt3sas_base_free_smid(ioc, smid);
759 goto out;
760 }
761 }
762
763 psge = (void *)request + (karg.data_sge_offset*4);
764
765 /* send command to firmware */
766 _ctl_display_some_debug(ioc, smid, "ctl_request", NULL);
767
768 init_completion(&ioc->ctl_cmds.done);
769 switch (mpi_request->Function) {
770 case MPI2_FUNCTION_NVME_ENCAPSULATED:
771 {
772 nvme_encap_request = (Mpi26NVMeEncapsulatedRequest_t *)request;
773 /*
774 * Get the Physical Address of the sense buffer.
775 * Use Error Response buffer address field to hold the sense
776 * buffer address.
777 * Clear the internal sense buffer, which will potentially hold
778 * the Completion Queue Entry on return, or 0 if no Entry.
779 * Build the PRPs and set direction bits.
780 * Send the request.
781 */
782 nvme_encap_request->ErrorResponseBaseAddress =
783 cpu_to_le64(ioc->sense_dma & 0xFFFFFFFF00000000UL);
784 nvme_encap_request->ErrorResponseBaseAddress |=
785 cpu_to_le64(le32_to_cpu(
786 mpt3sas_base_get_sense_buffer_dma(ioc, smid)));
787 nvme_encap_request->ErrorResponseAllocationLength =
788 cpu_to_le16(NVME_ERROR_RESPONSE_SIZE);
789 memset(ioc->ctl_cmds.sense, 0, NVME_ERROR_RESPONSE_SIZE);
790 ioc->build_nvme_prp(ioc, smid, nvme_encap_request,
791 data_out_dma, data_out_sz, data_in_dma, data_in_sz);
792 if (test_bit(device_handle, ioc->device_remove_in_progress)) {
793 dtmprintk(ioc,
794 ioc_info(ioc, "handle(0x%04x): ioctl failed due to device removal in progress\n",
795 device_handle));
796 mpt3sas_base_free_smid(ioc, smid);
797 ret = -EINVAL;
798 goto out;
799 }
800 mpt3sas_base_put_smid_nvme_encap(ioc, smid);
801 break;
802 }
803 case MPI2_FUNCTION_SCSI_IO_REQUEST:
804 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
805 {
806 Mpi2SCSIIORequest_t *scsiio_request =
807 (Mpi2SCSIIORequest_t *)request;
808 scsiio_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
809 scsiio_request->SenseBufferLowAddress =
810 mpt3sas_base_get_sense_buffer_dma(ioc, smid);
811 memset(ioc->ctl_cmds.sense, 0, SCSI_SENSE_BUFFERSIZE);
812 if (test_bit(device_handle, ioc->device_remove_in_progress)) {
813 dtmprintk(ioc,
814 ioc_info(ioc, "handle(0x%04x) :ioctl failed due to device removal in progress\n",
815 device_handle));
816 mpt3sas_base_free_smid(ioc, smid);
817 ret = -EINVAL;
818 goto out;
819 }
820 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz,
821 data_in_dma, data_in_sz);
822 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)
823 ioc->put_smid_scsi_io(ioc, smid, device_handle);
824 else
825 mpt3sas_base_put_smid_default(ioc, smid);
826 break;
827 }
828 case MPI2_FUNCTION_SCSI_TASK_MGMT:
829 {
830 Mpi2SCSITaskManagementRequest_t *tm_request =
831 (Mpi2SCSITaskManagementRequest_t *)request;
832
833 dtmprintk(ioc,
834 ioc_info(ioc, "TASK_MGMT: handle(0x%04x), task_type(0x%02x)\n",
835 le16_to_cpu(tm_request->DevHandle),
836 tm_request->TaskType));
837 ioc->got_task_abort_from_ioctl = 1;
838 if (tm_request->TaskType ==
839 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK ||
840 tm_request->TaskType ==
841 MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) {
842 if (_ctl_set_task_mid(ioc, &karg, tm_request)) {
843 mpt3sas_base_free_smid(ioc, smid);
844 ioc->got_task_abort_from_ioctl = 0;
845 goto out;
846 }
847 }
848 ioc->got_task_abort_from_ioctl = 0;
849
850 if (test_bit(device_handle, ioc->device_remove_in_progress)) {
851 dtmprintk(ioc,
852 ioc_info(ioc, "handle(0x%04x) :ioctl failed due to device removal in progress\n",
853 device_handle));
854 mpt3sas_base_free_smid(ioc, smid);
855 ret = -EINVAL;
856 goto out;
857 }
858 mpt3sas_scsih_set_tm_flag(ioc, le16_to_cpu(
859 tm_request->DevHandle));
860 ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
861 data_in_dma, data_in_sz);
862 mpt3sas_base_put_smid_hi_priority(ioc, smid, 0);
863 break;
864 }
865 case MPI2_FUNCTION_SMP_PASSTHROUGH:
866 {
867 Mpi2SmpPassthroughRequest_t *smp_request =
868 (Mpi2SmpPassthroughRequest_t *)mpi_request;
869 u8 *data;
870
871 /* ioc determines which port to use */
872 smp_request->PhysicalPort = 0xFF;
873 if (smp_request->PassthroughFlags &
874 MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE)
875 data = (u8 *)&smp_request->SGL;
876 else {
877 if (unlikely(data_out == NULL)) {
878 pr_err("failure at %s:%d/%s()!\n",
879 __FILE__, __LINE__, __func__);
880 mpt3sas_base_free_smid(ioc, smid);
881 ret = -EINVAL;
882 goto out;
883 }
884 data = data_out;
885 }
886
887 if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) {
888 ioc->ioc_link_reset_in_progress = 1;
889 ioc->ignore_loginfos = 1;
890 }
891 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
892 data_in_sz);
893 mpt3sas_base_put_smid_default(ioc, smid);
894 break;
895 }
896 case MPI2_FUNCTION_SATA_PASSTHROUGH:
897 {
898 if (test_bit(device_handle, ioc->device_remove_in_progress)) {
899 dtmprintk(ioc,
900 ioc_info(ioc, "handle(0x%04x) :ioctl failed due to device removal in progress\n",
901 device_handle));
902 mpt3sas_base_free_smid(ioc, smid);
903 ret = -EINVAL;
904 goto out;
905 }
906 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
907 data_in_sz);
908 mpt3sas_base_put_smid_default(ioc, smid);
909 break;
910 }
911 case MPI2_FUNCTION_FW_DOWNLOAD:
912 case MPI2_FUNCTION_FW_UPLOAD:
913 {
914 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
915 data_in_sz);
916 mpt3sas_base_put_smid_default(ioc, smid);
917 break;
918 }
919 case MPI2_FUNCTION_TOOLBOX:
920 {
921 Mpi2ToolboxCleanRequest_t *toolbox_request =
922 (Mpi2ToolboxCleanRequest_t *)mpi_request;
923
924 if (toolbox_request->Tool == MPI2_TOOLBOX_DIAGNOSTIC_CLI_TOOL) {
925 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz,
926 data_in_dma, data_in_sz);
927 } else {
928 ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
929 data_in_dma, data_in_sz);
930 }
931 mpt3sas_base_put_smid_default(ioc, smid);
932 break;
933 }
934 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
935 {
936 Mpi2SasIoUnitControlRequest_t *sasiounit_request =
937 (Mpi2SasIoUnitControlRequest_t *)mpi_request;
938
939 if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET
940 || sasiounit_request->Operation ==
941 MPI2_SAS_OP_PHY_LINK_RESET) {
942 ioc->ioc_link_reset_in_progress = 1;
943 ioc->ignore_loginfos = 1;
944 }
945 /* drop to default case for posting the request */
946 }
947 /* fall through */
948 default:
949 ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz,
950 data_in_dma, data_in_sz);
951 mpt3sas_base_put_smid_default(ioc, smid);
952 break;
953 }
954
955 if (karg.timeout < MPT3_IOCTL_DEFAULT_TIMEOUT)
956 timeout = MPT3_IOCTL_DEFAULT_TIMEOUT;
957 else
958 timeout = karg.timeout;
959 wait_for_completion_timeout(&ioc->ctl_cmds.done, timeout*HZ);
960 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
961 Mpi2SCSITaskManagementRequest_t *tm_request =
962 (Mpi2SCSITaskManagementRequest_t *)mpi_request;
963 mpt3sas_scsih_clear_tm_flag(ioc, le16_to_cpu(
964 tm_request->DevHandle));
965 mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
966 } else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH ||
967 mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) &&
968 ioc->ioc_link_reset_in_progress) {
969 ioc->ioc_link_reset_in_progress = 0;
970 ioc->ignore_loginfos = 0;
971 }
972 if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
973 issue_reset =
974 mpt3sas_base_check_cmd_timeout(ioc,
975 ioc->ctl_cmds.status, mpi_request,
976 karg.data_sge_offset);
977 goto issue_host_reset;
978 }
979
980 mpi_reply = ioc->ctl_cmds.reply;
981
982 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT &&
983 (ioc->logging_level & MPT_DEBUG_TM)) {
984 Mpi2SCSITaskManagementReply_t *tm_reply =
985 (Mpi2SCSITaskManagementReply_t *)mpi_reply;
986
987 ioc_info(ioc, "TASK_MGMT: IOCStatus(0x%04x), IOCLogInfo(0x%08x), TerminationCount(0x%08x)\n",
988 le16_to_cpu(tm_reply->IOCStatus),
989 le32_to_cpu(tm_reply->IOCLogInfo),
990 le32_to_cpu(tm_reply->TerminationCount));
991 }
992
993 /* copy out xdata to user */
994 if (data_in_sz) {
995 if (copy_to_user(karg.data_in_buf_ptr, data_in,
996 data_in_sz)) {
997 pr_err("failure at %s:%d/%s()!\n", __FILE__,
998 __LINE__, __func__);
999 ret = -ENODATA;
1000 goto out;
1001 }
1002 }
1003
1004 /* copy out reply message frame to user */
1005 if (karg.max_reply_bytes) {
1006 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
1007 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
1008 sz)) {
1009 pr_err("failure at %s:%d/%s()!\n", __FILE__,
1010 __LINE__, __func__);
1011 ret = -ENODATA;
1012 goto out;
1013 }
1014 }
1015
1016 /* copy out sense/NVMe Error Response to user */
1017 if (karg.max_sense_bytes && (mpi_request->Function ==
1018 MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
1019 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH || mpi_request->Function ==
1020 MPI2_FUNCTION_NVME_ENCAPSULATED)) {
1021 if (karg.sense_data_ptr == NULL) {
1022 ioc_info(ioc, "Response buffer provided by application is NULL; Response data will not be returned\n");
1023 goto out;
1024 }
1025 sz_arg = (mpi_request->Function ==
1026 MPI2_FUNCTION_NVME_ENCAPSULATED) ? NVME_ERROR_RESPONSE_SIZE :
1027 SCSI_SENSE_BUFFERSIZE;
1028 sz = min_t(u32, karg.max_sense_bytes, sz_arg);
1029 if (copy_to_user(karg.sense_data_ptr, ioc->ctl_cmds.sense,
1030 sz)) {
1031 pr_err("failure at %s:%d/%s()!\n", __FILE__,
1032 __LINE__, __func__);
1033 ret = -ENODATA;
1034 goto out;
1035 }
1036 }
1037
1038 issue_host_reset:
1039 if (issue_reset) {
1040 ret = -ENODATA;
1041 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
1042 mpi_request->Function ==
1043 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
1044 mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH)) {
1045 ioc_info(ioc, "issue target reset: handle = (0x%04x)\n",
1046 le16_to_cpu(mpi_request->FunctionDependent1));
1047 mpt3sas_halt_firmware(ioc);
1048 pcie_device = mpt3sas_get_pdev_by_handle(ioc,
1049 le16_to_cpu(mpi_request->FunctionDependent1));
1050 if (pcie_device && (!ioc->tm_custom_handling))
1051 mpt3sas_scsih_issue_locked_tm(ioc,
1052 le16_to_cpu(mpi_request->FunctionDependent1),
1053 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
1054 0, pcie_device->reset_timeout,
1055 tr_method);
1056 else
1057 mpt3sas_scsih_issue_locked_tm(ioc,
1058 le16_to_cpu(mpi_request->FunctionDependent1),
1059 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
1060 0, 30, MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET);
1061 } else
1062 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1063 }
1064
1065 out:
1066 if (pcie_device)
1067 pcie_device_put(pcie_device);
1068
1069 /* free memory associated with sg buffers */
1070 if (data_in)
1071 dma_free_coherent(&ioc->pdev->dev, data_in_sz, data_in,
1072 data_in_dma);
1073
1074 if (data_out)
1075 dma_free_coherent(&ioc->pdev->dev, data_out_sz, data_out,
1076 data_out_dma);
1077
1078 kfree(mpi_request);
1079 ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
1080 return ret;
1081 }
1082
1083 /**
1084 * _ctl_getiocinfo - main handler for MPT3IOCINFO opcode
1085 * @ioc: per adapter object
1086 * @arg: user space buffer containing ioctl content
1087 */
1088 static long
1089 _ctl_getiocinfo(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1090 {
1091 struct mpt3_ioctl_iocinfo karg;
1092
1093 dctlprintk(ioc, ioc_info(ioc, "%s: enter\n",
1094 __func__));
1095
1096 memset(&karg, 0 , sizeof(karg));
1097 if (ioc->pfacts)
1098 karg.port_number = ioc->pfacts[0].PortNumber;
1099 karg.hw_rev = ioc->pdev->revision;
1100 karg.pci_id = ioc->pdev->device;
1101 karg.subsystem_device = ioc->pdev->subsystem_device;
1102 karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
1103 karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
1104 karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
1105 karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
1106 karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
1107 karg.firmware_version = ioc->facts.FWVersion.Word;
1108 strcpy(karg.driver_version, ioc->driver_name);
1109 strcat(karg.driver_version, "-");
1110 switch (ioc->hba_mpi_version_belonged) {
1111 case MPI2_VERSION:
1112 if (ioc->is_warpdrive)
1113 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2_SSS6200;
1114 else
1115 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
1116 strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
1117 break;
1118 case MPI25_VERSION:
1119 case MPI26_VERSION:
1120 if (ioc->is_gen35_ioc)
1121 karg.adapter_type = MPT3_IOCTL_INTERFACE_SAS35;
1122 else
1123 karg.adapter_type = MPT3_IOCTL_INTERFACE_SAS3;
1124 strcat(karg.driver_version, MPT3SAS_DRIVER_VERSION);
1125 break;
1126 }
1127 karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
1128
1129 if (copy_to_user(arg, &karg, sizeof(karg))) {
1130 pr_err("failure at %s:%d/%s()!\n",
1131 __FILE__, __LINE__, __func__);
1132 return -EFAULT;
1133 }
1134 return 0;
1135 }
1136
1137 /**
1138 * _ctl_eventquery - main handler for MPT3EVENTQUERY opcode
1139 * @ioc: per adapter object
1140 * @arg: user space buffer containing ioctl content
1141 */
1142 static long
1143 _ctl_eventquery(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1144 {
1145 struct mpt3_ioctl_eventquery karg;
1146
1147 if (copy_from_user(&karg, arg, sizeof(karg))) {
1148 pr_err("failure at %s:%d/%s()!\n",
1149 __FILE__, __LINE__, __func__);
1150 return -EFAULT;
1151 }
1152
1153 dctlprintk(ioc, ioc_info(ioc, "%s: enter\n",
1154 __func__));
1155
1156 karg.event_entries = MPT3SAS_CTL_EVENT_LOG_SIZE;
1157 memcpy(karg.event_types, ioc->event_type,
1158 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1159
1160 if (copy_to_user(arg, &karg, sizeof(karg))) {
1161 pr_err("failure at %s:%d/%s()!\n",
1162 __FILE__, __LINE__, __func__);
1163 return -EFAULT;
1164 }
1165 return 0;
1166 }
1167
1168 /**
1169 * _ctl_eventenable - main handler for MPT3EVENTENABLE opcode
1170 * @ioc: per adapter object
1171 * @arg: user space buffer containing ioctl content
1172 */
1173 static long
1174 _ctl_eventenable(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1175 {
1176 struct mpt3_ioctl_eventenable karg;
1177
1178 if (copy_from_user(&karg, arg, sizeof(karg))) {
1179 pr_err("failure at %s:%d/%s()!\n",
1180 __FILE__, __LINE__, __func__);
1181 return -EFAULT;
1182 }
1183
1184 dctlprintk(ioc, ioc_info(ioc, "%s: enter\n",
1185 __func__));
1186
1187 memcpy(ioc->event_type, karg.event_types,
1188 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1189 mpt3sas_base_validate_event_type(ioc, ioc->event_type);
1190
1191 if (ioc->event_log)
1192 return 0;
1193 /* initialize event_log */
1194 ioc->event_context = 0;
1195 ioc->aen_event_read_flag = 0;
1196 ioc->event_log = kcalloc(MPT3SAS_CTL_EVENT_LOG_SIZE,
1197 sizeof(struct MPT3_IOCTL_EVENTS), GFP_KERNEL);
1198 if (!ioc->event_log) {
1199 pr_err("failure at %s:%d/%s()!\n",
1200 __FILE__, __LINE__, __func__);
1201 return -ENOMEM;
1202 }
1203 return 0;
1204 }
1205
1206 /**
1207 * _ctl_eventreport - main handler for MPT3EVENTREPORT opcode
1208 * @ioc: per adapter object
1209 * @arg: user space buffer containing ioctl content
1210 */
1211 static long
1212 _ctl_eventreport(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1213 {
1214 struct mpt3_ioctl_eventreport karg;
1215 u32 number_bytes, max_events, max;
1216 struct mpt3_ioctl_eventreport __user *uarg = arg;
1217
1218 if (copy_from_user(&karg, arg, sizeof(karg))) {
1219 pr_err("failure at %s:%d/%s()!\n",
1220 __FILE__, __LINE__, __func__);
1221 return -EFAULT;
1222 }
1223
1224 dctlprintk(ioc, ioc_info(ioc, "%s: enter\n",
1225 __func__));
1226
1227 number_bytes = karg.hdr.max_data_size -
1228 sizeof(struct mpt3_ioctl_header);
1229 max_events = number_bytes/sizeof(struct MPT3_IOCTL_EVENTS);
1230 max = min_t(u32, MPT3SAS_CTL_EVENT_LOG_SIZE, max_events);
1231
1232 /* If fewer than 1 event is requested, there must have
1233 * been some type of error.
1234 */
1235 if (!max || !ioc->event_log)
1236 return -ENODATA;
1237
1238 number_bytes = max * sizeof(struct MPT3_IOCTL_EVENTS);
1239 if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
1240 pr_err("failure at %s:%d/%s()!\n",
1241 __FILE__, __LINE__, __func__);
1242 return -EFAULT;
1243 }
1244
1245 /* reset flag so SIGIO can restart */
1246 ioc->aen_event_read_flag = 0;
1247 return 0;
1248 }
1249
1250 /**
1251 * _ctl_do_reset - main handler for MPT3HARDRESET opcode
1252 * @ioc: per adapter object
1253 * @arg: user space buffer containing ioctl content
1254 */
1255 static long
1256 _ctl_do_reset(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1257 {
1258 struct mpt3_ioctl_diag_reset karg;
1259 int retval;
1260
1261 if (copy_from_user(&karg, arg, sizeof(karg))) {
1262 pr_err("failure at %s:%d/%s()!\n",
1263 __FILE__, __LINE__, __func__);
1264 return -EFAULT;
1265 }
1266
1267 if (ioc->shost_recovery || ioc->pci_error_recovery ||
1268 ioc->is_driver_loading)
1269 return -EAGAIN;
1270
1271 dctlprintk(ioc, ioc_info(ioc, "%s: enter\n",
1272 __func__));
1273
1274 retval = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1275 ioc_info(ioc, "host reset: %s\n", ((!retval) ? "SUCCESS" : "FAILED"));
1276 return 0;
1277 }
1278
1279 /**
1280 * _ctl_btdh_search_sas_device - searching for sas device
1281 * @ioc: per adapter object
1282 * @btdh: btdh ioctl payload
1283 */
1284 static int
1285 _ctl_btdh_search_sas_device(struct MPT3SAS_ADAPTER *ioc,
1286 struct mpt3_ioctl_btdh_mapping *btdh)
1287 {
1288 struct _sas_device *sas_device;
1289 unsigned long flags;
1290 int rc = 0;
1291
1292 if (list_empty(&ioc->sas_device_list))
1293 return rc;
1294
1295 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1296 list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
1297 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1298 btdh->handle == sas_device->handle) {
1299 btdh->bus = sas_device->channel;
1300 btdh->id = sas_device->id;
1301 rc = 1;
1302 goto out;
1303 } else if (btdh->bus == sas_device->channel && btdh->id ==
1304 sas_device->id && btdh->handle == 0xFFFF) {
1305 btdh->handle = sas_device->handle;
1306 rc = 1;
1307 goto out;
1308 }
1309 }
1310 out:
1311 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1312 return rc;
1313 }
1314
1315 /**
1316 * _ctl_btdh_search_pcie_device - searching for pcie device
1317 * @ioc: per adapter object
1318 * @btdh: btdh ioctl payload
1319 */
1320 static int
1321 _ctl_btdh_search_pcie_device(struct MPT3SAS_ADAPTER *ioc,
1322 struct mpt3_ioctl_btdh_mapping *btdh)
1323 {
1324 struct _pcie_device *pcie_device;
1325 unsigned long flags;
1326 int rc = 0;
1327
1328 if (list_empty(&ioc->pcie_device_list))
1329 return rc;
1330
1331 spin_lock_irqsave(&ioc->pcie_device_lock, flags);
1332 list_for_each_entry(pcie_device, &ioc->pcie_device_list, list) {
1333 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1334 btdh->handle == pcie_device->handle) {
1335 btdh->bus = pcie_device->channel;
1336 btdh->id = pcie_device->id;
1337 rc = 1;
1338 goto out;
1339 } else if (btdh->bus == pcie_device->channel && btdh->id ==
1340 pcie_device->id && btdh->handle == 0xFFFF) {
1341 btdh->handle = pcie_device->handle;
1342 rc = 1;
1343 goto out;
1344 }
1345 }
1346 out:
1347 spin_unlock_irqrestore(&ioc->pcie_device_lock, flags);
1348 return rc;
1349 }
1350
1351 /**
1352 * _ctl_btdh_search_raid_device - searching for raid device
1353 * @ioc: per adapter object
1354 * @btdh: btdh ioctl payload
1355 */
1356 static int
1357 _ctl_btdh_search_raid_device(struct MPT3SAS_ADAPTER *ioc,
1358 struct mpt3_ioctl_btdh_mapping *btdh)
1359 {
1360 struct _raid_device *raid_device;
1361 unsigned long flags;
1362 int rc = 0;
1363
1364 if (list_empty(&ioc->raid_device_list))
1365 return rc;
1366
1367 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1368 list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
1369 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1370 btdh->handle == raid_device->handle) {
1371 btdh->bus = raid_device->channel;
1372 btdh->id = raid_device->id;
1373 rc = 1;
1374 goto out;
1375 } else if (btdh->bus == raid_device->channel && btdh->id ==
1376 raid_device->id && btdh->handle == 0xFFFF) {
1377 btdh->handle = raid_device->handle;
1378 rc = 1;
1379 goto out;
1380 }
1381 }
1382 out:
1383 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1384 return rc;
1385 }
1386
1387 /**
1388 * _ctl_btdh_mapping - main handler for MPT3BTDHMAPPING opcode
1389 * @ioc: per adapter object
1390 * @arg: user space buffer containing ioctl content
1391 */
1392 static long
1393 _ctl_btdh_mapping(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1394 {
1395 struct mpt3_ioctl_btdh_mapping karg;
1396 int rc;
1397
1398 if (copy_from_user(&karg, arg, sizeof(karg))) {
1399 pr_err("failure at %s:%d/%s()!\n",
1400 __FILE__, __LINE__, __func__);
1401 return -EFAULT;
1402 }
1403
1404 dctlprintk(ioc, ioc_info(ioc, "%s\n",
1405 __func__));
1406
1407 rc = _ctl_btdh_search_sas_device(ioc, &karg);
1408 if (!rc)
1409 rc = _ctl_btdh_search_pcie_device(ioc, &karg);
1410 if (!rc)
1411 _ctl_btdh_search_raid_device(ioc, &karg);
1412
1413 if (copy_to_user(arg, &karg, sizeof(karg))) {
1414 pr_err("failure at %s:%d/%s()!\n",
1415 __FILE__, __LINE__, __func__);
1416 return -EFAULT;
1417 }
1418 return 0;
1419 }
1420
1421 /**
1422 * _ctl_diag_capability - return diag buffer capability
1423 * @ioc: per adapter object
1424 * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
1425 *
1426 * returns 1 when diag buffer support is enabled in firmware
1427 */
1428 static u8
1429 _ctl_diag_capability(struct MPT3SAS_ADAPTER *ioc, u8 buffer_type)
1430 {
1431 u8 rc = 0;
1432
1433 switch (buffer_type) {
1434 case MPI2_DIAG_BUF_TYPE_TRACE:
1435 if (ioc->facts.IOCCapabilities &
1436 MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
1437 rc = 1;
1438 break;
1439 case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
1440 if (ioc->facts.IOCCapabilities &
1441 MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
1442 rc = 1;
1443 break;
1444 case MPI2_DIAG_BUF_TYPE_EXTENDED:
1445 if (ioc->facts.IOCCapabilities &
1446 MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER)
1447 rc = 1;
1448 }
1449
1450 return rc;
1451 }
1452
1453
1454 /**
1455 * _ctl_diag_register_2 - wrapper for registering diag buffer support
1456 * @ioc: per adapter object
1457 * @diag_register: the diag_register struct passed in from user space
1458 *
1459 */
1460 static long
1461 _ctl_diag_register_2(struct MPT3SAS_ADAPTER *ioc,
1462 struct mpt3_diag_register *diag_register)
1463 {
1464 int rc, i;
1465 void *request_data = NULL;
1466 dma_addr_t request_data_dma;
1467 u32 request_data_sz = 0;
1468 Mpi2DiagBufferPostRequest_t *mpi_request;
1469 Mpi2DiagBufferPostReply_t *mpi_reply;
1470 u8 buffer_type;
1471 u16 smid;
1472 u16 ioc_status;
1473 u32 ioc_state;
1474 u8 issue_reset = 0;
1475
1476 dctlprintk(ioc, ioc_info(ioc, "%s\n",
1477 __func__));
1478
1479 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1480 if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1481 ioc_err(ioc, "%s: failed due to ioc not operational\n",
1482 __func__);
1483 rc = -EAGAIN;
1484 goto out;
1485 }
1486
1487 if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
1488 ioc_err(ioc, "%s: ctl_cmd in use\n", __func__);
1489 rc = -EAGAIN;
1490 goto out;
1491 }
1492
1493 buffer_type = diag_register->buffer_type;
1494 if (!_ctl_diag_capability(ioc, buffer_type)) {
1495 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
1496 __func__, buffer_type);
1497 return -EPERM;
1498 }
1499
1500 if (ioc->diag_buffer_status[buffer_type] &
1501 MPT3_DIAG_BUFFER_IS_REGISTERED) {
1502 ioc_err(ioc, "%s: already has a registered buffer for buffer_type(0x%02x)\n",
1503 __func__, buffer_type);
1504 return -EINVAL;
1505 }
1506
1507 if (diag_register->requested_buffer_size % 4) {
1508 ioc_err(ioc, "%s: the requested_buffer_size is not 4 byte aligned\n",
1509 __func__);
1510 return -EINVAL;
1511 }
1512
1513 smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1514 if (!smid) {
1515 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
1516 rc = -EAGAIN;
1517 goto out;
1518 }
1519
1520 rc = 0;
1521 ioc->ctl_cmds.status = MPT3_CMD_PENDING;
1522 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1523 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1524 ioc->ctl_cmds.smid = smid;
1525
1526 request_data = ioc->diag_buffer[buffer_type];
1527 request_data_sz = diag_register->requested_buffer_size;
1528 ioc->unique_id[buffer_type] = diag_register->unique_id;
1529 ioc->diag_buffer_status[buffer_type] = 0;
1530 memcpy(ioc->product_specific[buffer_type],
1531 diag_register->product_specific, MPT3_PRODUCT_SPECIFIC_DWORDS);
1532 ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags;
1533
1534 if (request_data) {
1535 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1536 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
1537 dma_free_coherent(&ioc->pdev->dev,
1538 ioc->diag_buffer_sz[buffer_type],
1539 request_data, request_data_dma);
1540 request_data = NULL;
1541 }
1542 }
1543
1544 if (request_data == NULL) {
1545 ioc->diag_buffer_sz[buffer_type] = 0;
1546 ioc->diag_buffer_dma[buffer_type] = 0;
1547 request_data = dma_alloc_coherent(&ioc->pdev->dev,
1548 request_data_sz, &request_data_dma, GFP_KERNEL);
1549 if (request_data == NULL) {
1550 ioc_err(ioc, "%s: failed allocating memory for diag buffers, requested size(%d)\n",
1551 __func__, request_data_sz);
1552 mpt3sas_base_free_smid(ioc, smid);
1553 return -ENOMEM;
1554 }
1555 ioc->diag_buffer[buffer_type] = request_data;
1556 ioc->diag_buffer_sz[buffer_type] = request_data_sz;
1557 ioc->diag_buffer_dma[buffer_type] = request_data_dma;
1558 }
1559
1560 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1561 mpi_request->BufferType = diag_register->buffer_type;
1562 mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags);
1563 mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
1564 mpi_request->BufferLength = cpu_to_le32(request_data_sz);
1565 mpi_request->VF_ID = 0; /* TODO */
1566 mpi_request->VP_ID = 0;
1567
1568 dctlprintk(ioc,
1569 ioc_info(ioc, "%s: diag_buffer(0x%p), dma(0x%llx), sz(%d)\n",
1570 __func__, request_data,
1571 (unsigned long long)request_data_dma,
1572 le32_to_cpu(mpi_request->BufferLength)));
1573
1574 for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
1575 mpi_request->ProductSpecific[i] =
1576 cpu_to_le32(ioc->product_specific[buffer_type][i]);
1577
1578 init_completion(&ioc->ctl_cmds.done);
1579 mpt3sas_base_put_smid_default(ioc, smid);
1580 wait_for_completion_timeout(&ioc->ctl_cmds.done,
1581 MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
1582
1583 if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
1584 issue_reset =
1585 mpt3sas_base_check_cmd_timeout(ioc,
1586 ioc->ctl_cmds.status, mpi_request,
1587 sizeof(Mpi2DiagBufferPostRequest_t)/4);
1588 goto issue_host_reset;
1589 }
1590
1591 /* process the completed Reply Message Frame */
1592 if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
1593 ioc_err(ioc, "%s: no reply message\n", __func__);
1594 rc = -EFAULT;
1595 goto out;
1596 }
1597
1598 mpi_reply = ioc->ctl_cmds.reply;
1599 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1600
1601 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1602 ioc->diag_buffer_status[buffer_type] |=
1603 MPT3_DIAG_BUFFER_IS_REGISTERED;
1604 dctlprintk(ioc, ioc_info(ioc, "%s: success\n", __func__));
1605 } else {
1606 ioc_info(ioc, "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
1607 __func__,
1608 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1609 rc = -EFAULT;
1610 }
1611
1612 issue_host_reset:
1613 if (issue_reset)
1614 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
1615
1616 out:
1617
1618 if (rc && request_data)
1619 dma_free_coherent(&ioc->pdev->dev, request_data_sz,
1620 request_data, request_data_dma);
1621
1622 ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
1623 return rc;
1624 }
1625
1626 /**
1627 * mpt3sas_enable_diag_buffer - enabling diag_buffers support driver load time
1628 * @ioc: per adapter object
1629 * @bits_to_register: bitwise field where trace is bit 0, and snapshot is bit 1
1630 *
1631 * This is called when command line option diag_buffer_enable is enabled
1632 * at driver load time.
1633 */
1634 void
1635 mpt3sas_enable_diag_buffer(struct MPT3SAS_ADAPTER *ioc, u8 bits_to_register)
1636 {
1637 struct mpt3_diag_register diag_register;
1638
1639 memset(&diag_register, 0, sizeof(struct mpt3_diag_register));
1640
1641 if (bits_to_register & 1) {
1642 ioc_info(ioc, "registering trace buffer support\n");
1643 ioc->diag_trigger_master.MasterData =
1644 (MASTER_TRIGGER_FW_FAULT + MASTER_TRIGGER_ADAPTER_RESET);
1645 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
1646 /* register for 2MB buffers */
1647 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1648 diag_register.unique_id = 0x7075900;
1649 _ctl_diag_register_2(ioc, &diag_register);
1650 }
1651
1652 if (bits_to_register & 2) {
1653 ioc_info(ioc, "registering snapshot buffer support\n");
1654 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT;
1655 /* register for 2MB buffers */
1656 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1657 diag_register.unique_id = 0x7075901;
1658 _ctl_diag_register_2(ioc, &diag_register);
1659 }
1660
1661 if (bits_to_register & 4) {
1662 ioc_info(ioc, "registering extended buffer support\n");
1663 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_EXTENDED;
1664 /* register for 2MB buffers */
1665 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1666 diag_register.unique_id = 0x7075901;
1667 _ctl_diag_register_2(ioc, &diag_register);
1668 }
1669 }
1670
1671 /**
1672 * _ctl_diag_register - application register with driver
1673 * @ioc: per adapter object
1674 * @arg: user space buffer containing ioctl content
1675 *
1676 * This will allow the driver to setup any required buffers that will be
1677 * needed by firmware to communicate with the driver.
1678 */
1679 static long
1680 _ctl_diag_register(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1681 {
1682 struct mpt3_diag_register karg;
1683 long rc;
1684
1685 if (copy_from_user(&karg, arg, sizeof(karg))) {
1686 pr_err("failure at %s:%d/%s()!\n",
1687 __FILE__, __LINE__, __func__);
1688 return -EFAULT;
1689 }
1690
1691 rc = _ctl_diag_register_2(ioc, &karg);
1692 return rc;
1693 }
1694
1695 /**
1696 * _ctl_diag_unregister - application unregister with driver
1697 * @ioc: per adapter object
1698 * @arg: user space buffer containing ioctl content
1699 *
1700 * This will allow the driver to cleanup any memory allocated for diag
1701 * messages and to free up any resources.
1702 */
1703 static long
1704 _ctl_diag_unregister(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1705 {
1706 struct mpt3_diag_unregister karg;
1707 void *request_data;
1708 dma_addr_t request_data_dma;
1709 u32 request_data_sz;
1710 u8 buffer_type;
1711
1712 if (copy_from_user(&karg, arg, sizeof(karg))) {
1713 pr_err("failure at %s:%d/%s()!\n",
1714 __FILE__, __LINE__, __func__);
1715 return -EFAULT;
1716 }
1717
1718 dctlprintk(ioc, ioc_info(ioc, "%s\n",
1719 __func__));
1720
1721 buffer_type = karg.unique_id & 0x000000ff;
1722 if (!_ctl_diag_capability(ioc, buffer_type)) {
1723 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
1724 __func__, buffer_type);
1725 return -EPERM;
1726 }
1727
1728 if ((ioc->diag_buffer_status[buffer_type] &
1729 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
1730 ioc_err(ioc, "%s: buffer_type(0x%02x) is not registered\n",
1731 __func__, buffer_type);
1732 return -EINVAL;
1733 }
1734 if ((ioc->diag_buffer_status[buffer_type] &
1735 MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
1736 ioc_err(ioc, "%s: buffer_type(0x%02x) has not been released\n",
1737 __func__, buffer_type);
1738 return -EINVAL;
1739 }
1740
1741 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1742 ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n",
1743 __func__, karg.unique_id);
1744 return -EINVAL;
1745 }
1746
1747 request_data = ioc->diag_buffer[buffer_type];
1748 if (!request_data) {
1749 ioc_err(ioc, "%s: doesn't have memory allocated for buffer_type(0x%02x)\n",
1750 __func__, buffer_type);
1751 return -ENOMEM;
1752 }
1753
1754 request_data_sz = ioc->diag_buffer_sz[buffer_type];
1755 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1756 dma_free_coherent(&ioc->pdev->dev, request_data_sz,
1757 request_data, request_data_dma);
1758 ioc->diag_buffer[buffer_type] = NULL;
1759 ioc->diag_buffer_status[buffer_type] = 0;
1760 return 0;
1761 }
1762
1763 /**
1764 * _ctl_diag_query - query relevant info associated with diag buffers
1765 * @ioc: per adapter object
1766 * @arg: user space buffer containing ioctl content
1767 *
1768 * The application will send only buffer_type and unique_id. Driver will
1769 * inspect unique_id first, if valid, fill in all the info. If unique_id is
1770 * 0x00, the driver will return info specified by Buffer Type.
1771 */
1772 static long
1773 _ctl_diag_query(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1774 {
1775 struct mpt3_diag_query karg;
1776 void *request_data;
1777 int i;
1778 u8 buffer_type;
1779
1780 if (copy_from_user(&karg, arg, sizeof(karg))) {
1781 pr_err("failure at %s:%d/%s()!\n",
1782 __FILE__, __LINE__, __func__);
1783 return -EFAULT;
1784 }
1785
1786 dctlprintk(ioc, ioc_info(ioc, "%s\n",
1787 __func__));
1788
1789 karg.application_flags = 0;
1790 buffer_type = karg.buffer_type;
1791
1792 if (!_ctl_diag_capability(ioc, buffer_type)) {
1793 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
1794 __func__, buffer_type);
1795 return -EPERM;
1796 }
1797
1798 if ((ioc->diag_buffer_status[buffer_type] &
1799 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
1800 ioc_err(ioc, "%s: buffer_type(0x%02x) is not registered\n",
1801 __func__, buffer_type);
1802 return -EINVAL;
1803 }
1804
1805 if (karg.unique_id & 0xffffff00) {
1806 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1807 ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n",
1808 __func__, karg.unique_id);
1809 return -EINVAL;
1810 }
1811 }
1812
1813 request_data = ioc->diag_buffer[buffer_type];
1814 if (!request_data) {
1815 ioc_err(ioc, "%s: doesn't have buffer for buffer_type(0x%02x)\n",
1816 __func__, buffer_type);
1817 return -ENOMEM;
1818 }
1819
1820 if (ioc->diag_buffer_status[buffer_type] & MPT3_DIAG_BUFFER_IS_RELEASED)
1821 karg.application_flags = (MPT3_APP_FLAGS_APP_OWNED |
1822 MPT3_APP_FLAGS_BUFFER_VALID);
1823 else
1824 karg.application_flags = (MPT3_APP_FLAGS_APP_OWNED |
1825 MPT3_APP_FLAGS_BUFFER_VALID |
1826 MPT3_APP_FLAGS_FW_BUFFER_ACCESS);
1827
1828 for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
1829 karg.product_specific[i] =
1830 ioc->product_specific[buffer_type][i];
1831
1832 karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
1833 karg.driver_added_buffer_size = 0;
1834 karg.unique_id = ioc->unique_id[buffer_type];
1835 karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];
1836
1837 if (copy_to_user(arg, &karg, sizeof(struct mpt3_diag_query))) {
1838 ioc_err(ioc, "%s: unable to write mpt3_diag_query data @ %p\n",
1839 __func__, arg);
1840 return -EFAULT;
1841 }
1842 return 0;
1843 }
1844
1845 /**
1846 * mpt3sas_send_diag_release - Diag Release Message
1847 * @ioc: per adapter object
1848 * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
1849 * @issue_reset: specifies whether host reset is required.
1850 *
1851 */
1852 int
1853 mpt3sas_send_diag_release(struct MPT3SAS_ADAPTER *ioc, u8 buffer_type,
1854 u8 *issue_reset)
1855 {
1856 Mpi2DiagReleaseRequest_t *mpi_request;
1857 Mpi2DiagReleaseReply_t *mpi_reply;
1858 u16 smid;
1859 u16 ioc_status;
1860 u32 ioc_state;
1861 int rc;
1862
1863 dctlprintk(ioc, ioc_info(ioc, "%s\n",
1864 __func__));
1865
1866 rc = 0;
1867 *issue_reset = 0;
1868
1869 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1870 if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1871 if (ioc->diag_buffer_status[buffer_type] &
1872 MPT3_DIAG_BUFFER_IS_REGISTERED)
1873 ioc->diag_buffer_status[buffer_type] |=
1874 MPT3_DIAG_BUFFER_IS_RELEASED;
1875 dctlprintk(ioc,
1876 ioc_info(ioc, "%s: skipping due to FAULT state\n",
1877 __func__));
1878 rc = -EAGAIN;
1879 goto out;
1880 }
1881
1882 if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
1883 ioc_err(ioc, "%s: ctl_cmd in use\n", __func__);
1884 rc = -EAGAIN;
1885 goto out;
1886 }
1887
1888 smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1889 if (!smid) {
1890 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
1891 rc = -EAGAIN;
1892 goto out;
1893 }
1894
1895 ioc->ctl_cmds.status = MPT3_CMD_PENDING;
1896 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1897 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1898 ioc->ctl_cmds.smid = smid;
1899
1900 mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
1901 mpi_request->BufferType = buffer_type;
1902 mpi_request->VF_ID = 0; /* TODO */
1903 mpi_request->VP_ID = 0;
1904
1905 init_completion(&ioc->ctl_cmds.done);
1906 mpt3sas_base_put_smid_default(ioc, smid);
1907 wait_for_completion_timeout(&ioc->ctl_cmds.done,
1908 MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
1909
1910 if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
1911 *issue_reset = mpt3sas_base_check_cmd_timeout(ioc,
1912 ioc->ctl_cmds.status, mpi_request,
1913 sizeof(Mpi2DiagReleaseRequest_t)/4);
1914 rc = -EFAULT;
1915 goto out;
1916 }
1917
1918 /* process the completed Reply Message Frame */
1919 if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
1920 ioc_err(ioc, "%s: no reply message\n", __func__);
1921 rc = -EFAULT;
1922 goto out;
1923 }
1924
1925 mpi_reply = ioc->ctl_cmds.reply;
1926 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1927
1928 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1929 ioc->diag_buffer_status[buffer_type] |=
1930 MPT3_DIAG_BUFFER_IS_RELEASED;
1931 dctlprintk(ioc, ioc_info(ioc, "%s: success\n", __func__));
1932 } else {
1933 ioc_info(ioc, "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
1934 __func__,
1935 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1936 rc = -EFAULT;
1937 }
1938
1939 out:
1940 ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
1941 return rc;
1942 }
1943
1944 /**
1945 * _ctl_diag_release - request to send Diag Release Message to firmware
1946 * @ioc: ?
1947 * @arg: user space buffer containing ioctl content
1948 *
1949 * This allows ownership of the specified buffer to returned to the driver,
1950 * allowing an application to read the buffer without fear that firmware is
1951 * overwriting information in the buffer.
1952 */
1953 static long
1954 _ctl_diag_release(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
1955 {
1956 struct mpt3_diag_release karg;
1957 void *request_data;
1958 int rc;
1959 u8 buffer_type;
1960 u8 issue_reset = 0;
1961
1962 if (copy_from_user(&karg, arg, sizeof(karg))) {
1963 pr_err("failure at %s:%d/%s()!\n",
1964 __FILE__, __LINE__, __func__);
1965 return -EFAULT;
1966 }
1967
1968 dctlprintk(ioc, ioc_info(ioc, "%s\n",
1969 __func__));
1970
1971 buffer_type = karg.unique_id & 0x000000ff;
1972 if (!_ctl_diag_capability(ioc, buffer_type)) {
1973 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
1974 __func__, buffer_type);
1975 return -EPERM;
1976 }
1977
1978 if ((ioc->diag_buffer_status[buffer_type] &
1979 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
1980 ioc_err(ioc, "%s: buffer_type(0x%02x) is not registered\n",
1981 __func__, buffer_type);
1982 return -EINVAL;
1983 }
1984
1985 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1986 ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n",
1987 __func__, karg.unique_id);
1988 return -EINVAL;
1989 }
1990
1991 if (ioc->diag_buffer_status[buffer_type] &
1992 MPT3_DIAG_BUFFER_IS_RELEASED) {
1993 ioc_err(ioc, "%s: buffer_type(0x%02x) is already released\n",
1994 __func__, buffer_type);
1995 return 0;
1996 }
1997
1998 request_data = ioc->diag_buffer[buffer_type];
1999
2000 if (!request_data) {
2001 ioc_err(ioc, "%s: doesn't have memory allocated for buffer_type(0x%02x)\n",
2002 __func__, buffer_type);
2003 return -ENOMEM;
2004 }
2005
2006 /* buffers were released by due to host reset */
2007 if ((ioc->diag_buffer_status[buffer_type] &
2008 MPT3_DIAG_BUFFER_IS_DIAG_RESET)) {
2009 ioc->diag_buffer_status[buffer_type] |=
2010 MPT3_DIAG_BUFFER_IS_RELEASED;
2011 ioc->diag_buffer_status[buffer_type] &=
2012 ~MPT3_DIAG_BUFFER_IS_DIAG_RESET;
2013 ioc_err(ioc, "%s: buffer_type(0x%02x) was released due to host reset\n",
2014 __func__, buffer_type);
2015 return 0;
2016 }
2017
2018 rc = mpt3sas_send_diag_release(ioc, buffer_type, &issue_reset);
2019
2020 if (issue_reset)
2021 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2022
2023 return rc;
2024 }
2025
2026 /**
2027 * _ctl_diag_read_buffer - request for copy of the diag buffer
2028 * @ioc: per adapter object
2029 * @arg: user space buffer containing ioctl content
2030 */
2031 static long
2032 _ctl_diag_read_buffer(struct MPT3SAS_ADAPTER *ioc, void __user *arg)
2033 {
2034 struct mpt3_diag_read_buffer karg;
2035 struct mpt3_diag_read_buffer __user *uarg = arg;
2036 void *request_data, *diag_data;
2037 Mpi2DiagBufferPostRequest_t *mpi_request;
2038 Mpi2DiagBufferPostReply_t *mpi_reply;
2039 int rc, i;
2040 u8 buffer_type;
2041 unsigned long request_size, copy_size;
2042 u16 smid;
2043 u16 ioc_status;
2044 u8 issue_reset = 0;
2045
2046 if (copy_from_user(&karg, arg, sizeof(karg))) {
2047 pr_err("failure at %s:%d/%s()!\n",
2048 __FILE__, __LINE__, __func__);
2049 return -EFAULT;
2050 }
2051
2052 dctlprintk(ioc, ioc_info(ioc, "%s\n",
2053 __func__));
2054
2055 buffer_type = karg.unique_id & 0x000000ff;
2056 if (!_ctl_diag_capability(ioc, buffer_type)) {
2057 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n",
2058 __func__, buffer_type);
2059 return -EPERM;
2060 }
2061
2062 if (karg.unique_id != ioc->unique_id[buffer_type]) {
2063 ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n",
2064 __func__, karg.unique_id);
2065 return -EINVAL;
2066 }
2067
2068 request_data = ioc->diag_buffer[buffer_type];
2069 if (!request_data) {
2070 ioc_err(ioc, "%s: doesn't have buffer for buffer_type(0x%02x)\n",
2071 __func__, buffer_type);
2072 return -ENOMEM;
2073 }
2074
2075 request_size = ioc->diag_buffer_sz[buffer_type];
2076
2077 if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
2078 ioc_err(ioc, "%s: either the starting_offset or bytes_to_read are not 4 byte aligned\n",
2079 __func__);
2080 return -EINVAL;
2081 }
2082
2083 if (karg.starting_offset > request_size)
2084 return -EINVAL;
2085
2086 diag_data = (void *)(request_data + karg.starting_offset);
2087 dctlprintk(ioc,
2088 ioc_info(ioc, "%s: diag_buffer(%p), offset(%d), sz(%d)\n",
2089 __func__, diag_data, karg.starting_offset,
2090 karg.bytes_to_read));
2091
2092 /* Truncate data on requests that are too large */
2093 if ((diag_data + karg.bytes_to_read < diag_data) ||
2094 (diag_data + karg.bytes_to_read > request_data + request_size))
2095 copy_size = request_size - karg.starting_offset;
2096 else
2097 copy_size = karg.bytes_to_read;
2098
2099 if (copy_to_user((void __user *)uarg->diagnostic_data,
2100 diag_data, copy_size)) {
2101 ioc_err(ioc, "%s: Unable to write mpt_diag_read_buffer_t data @ %p\n",
2102 __func__, diag_data);
2103 return -EFAULT;
2104 }
2105
2106 if ((karg.flags & MPT3_FLAGS_REREGISTER) == 0)
2107 return 0;
2108
2109 dctlprintk(ioc,
2110 ioc_info(ioc, "%s: Reregister buffer_type(0x%02x)\n",
2111 __func__, buffer_type));
2112 if ((ioc->diag_buffer_status[buffer_type] &
2113 MPT3_DIAG_BUFFER_IS_RELEASED) == 0) {
2114 dctlprintk(ioc,
2115 ioc_info(ioc, "%s: buffer_type(0x%02x) is still registered\n",
2116 __func__, buffer_type));
2117 return 0;
2118 }
2119 /* Get a free request frame and save the message context.
2120 */
2121
2122 if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) {
2123 ioc_err(ioc, "%s: ctl_cmd in use\n", __func__);
2124 rc = -EAGAIN;
2125 goto out;
2126 }
2127
2128 smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx);
2129 if (!smid) {
2130 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__);
2131 rc = -EAGAIN;
2132 goto out;
2133 }
2134
2135 rc = 0;
2136 ioc->ctl_cmds.status = MPT3_CMD_PENDING;
2137 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
2138 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2139 ioc->ctl_cmds.smid = smid;
2140
2141 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
2142 mpi_request->BufferType = buffer_type;
2143 mpi_request->BufferLength =
2144 cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
2145 mpi_request->BufferAddress =
2146 cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
2147 for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++)
2148 mpi_request->ProductSpecific[i] =
2149 cpu_to_le32(ioc->product_specific[buffer_type][i]);
2150 mpi_request->VF_ID = 0; /* TODO */
2151 mpi_request->VP_ID = 0;
2152
2153 init_completion(&ioc->ctl_cmds.done);
2154 mpt3sas_base_put_smid_default(ioc, smid);
2155 wait_for_completion_timeout(&ioc->ctl_cmds.done,
2156 MPT3_IOCTL_DEFAULT_TIMEOUT*HZ);
2157
2158 if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) {
2159 issue_reset =
2160 mpt3sas_base_check_cmd_timeout(ioc,
2161 ioc->ctl_cmds.status, mpi_request,
2162 sizeof(Mpi2DiagBufferPostRequest_t)/4);
2163 goto issue_host_reset;
2164 }
2165
2166 /* process the completed Reply Message Frame */
2167 if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) {
2168 ioc_err(ioc, "%s: no reply message\n", __func__);
2169 rc = -EFAULT;
2170 goto out;
2171 }
2172
2173 mpi_reply = ioc->ctl_cmds.reply;
2174 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
2175
2176 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
2177 ioc->diag_buffer_status[buffer_type] |=
2178 MPT3_DIAG_BUFFER_IS_REGISTERED;
2179 dctlprintk(ioc, ioc_info(ioc, "%s: success\n", __func__));
2180 } else {
2181 ioc_info(ioc, "%s: ioc_status(0x%04x) log_info(0x%08x)\n",
2182 __func__, ioc_status,
2183 le32_to_cpu(mpi_reply->IOCLogInfo));
2184 rc = -EFAULT;
2185 }
2186
2187 issue_host_reset:
2188 if (issue_reset)
2189 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER);
2190
2191 out:
2192
2193 ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
2194 return rc;
2195 }
2196
2197
2198
2199 #ifdef CONFIG_COMPAT
2200 /**
2201 * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
2202 * @ioc: per adapter object
2203 * @cmd: ioctl opcode
2204 * @arg: (struct mpt3_ioctl_command32)
2205 *
2206 * MPT3COMMAND32 - Handle 32bit applications running on 64bit os.
2207 */
2208 static long
2209 _ctl_compat_mpt_command(struct MPT3SAS_ADAPTER *ioc, unsigned cmd,
2210 void __user *arg)
2211 {
2212 struct mpt3_ioctl_command32 karg32;
2213 struct mpt3_ioctl_command32 __user *uarg;
2214 struct mpt3_ioctl_command karg;
2215
2216 if (_IOC_SIZE(cmd) != sizeof(struct mpt3_ioctl_command32))
2217 return -EINVAL;
2218
2219 uarg = (struct mpt3_ioctl_command32 __user *) arg;
2220
2221 if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
2222 pr_err("failure at %s:%d/%s()!\n",
2223 __FILE__, __LINE__, __func__);
2224 return -EFAULT;
2225 }
2226
2227 memset(&karg, 0, sizeof(struct mpt3_ioctl_command));
2228 karg.hdr.ioc_number = karg32.hdr.ioc_number;
2229 karg.hdr.port_number = karg32.hdr.port_number;
2230 karg.hdr.max_data_size = karg32.hdr.max_data_size;
2231 karg.timeout = karg32.timeout;
2232 karg.max_reply_bytes = karg32.max_reply_bytes;
2233 karg.data_in_size = karg32.data_in_size;
2234 karg.data_out_size = karg32.data_out_size;
2235 karg.max_sense_bytes = karg32.max_sense_bytes;
2236 karg.data_sge_offset = karg32.data_sge_offset;
2237 karg.reply_frame_buf_ptr = compat_ptr(karg32.reply_frame_buf_ptr);
2238 karg.data_in_buf_ptr = compat_ptr(karg32.data_in_buf_ptr);
2239 karg.data_out_buf_ptr = compat_ptr(karg32.data_out_buf_ptr);
2240 karg.sense_data_ptr = compat_ptr(karg32.sense_data_ptr);
2241 return _ctl_do_mpt_command(ioc, karg, &uarg->mf);
2242 }
2243 #endif
2244
2245 /**
2246 * _ctl_ioctl_main - main ioctl entry point
2247 * @file: (struct file)
2248 * @cmd: ioctl opcode
2249 * @arg: user space data buffer
2250 * @compat: handles 32 bit applications in 64bit os
2251 * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device &
2252 * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device.
2253 */
2254 static long
2255 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg,
2256 u8 compat, u16 mpi_version)
2257 {
2258 struct MPT3SAS_ADAPTER *ioc;
2259 struct mpt3_ioctl_header ioctl_header;
2260 enum block_state state;
2261 long ret = -EINVAL;
2262
2263 /* get IOCTL header */
2264 if (copy_from_user(&ioctl_header, (char __user *)arg,
2265 sizeof(struct mpt3_ioctl_header))) {
2266 pr_err("failure at %s:%d/%s()!\n",
2267 __FILE__, __LINE__, __func__);
2268 return -EFAULT;
2269 }
2270
2271 if (_ctl_verify_adapter(ioctl_header.ioc_number,
2272 &ioc, mpi_version) == -1 || !ioc)
2273 return -ENODEV;
2274
2275 /* pci_access_mutex lock acquired by ioctl path */
2276 mutex_lock(&ioc->pci_access_mutex);
2277
2278 if (ioc->shost_recovery || ioc->pci_error_recovery ||
2279 ioc->is_driver_loading || ioc->remove_host) {
2280 ret = -EAGAIN;
2281 goto out_unlock_pciaccess;
2282 }
2283
2284 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
2285 if (state == NON_BLOCKING) {
2286 if (!mutex_trylock(&ioc->ctl_cmds.mutex)) {
2287 ret = -EAGAIN;
2288 goto out_unlock_pciaccess;
2289 }
2290 } else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex)) {
2291 ret = -ERESTARTSYS;
2292 goto out_unlock_pciaccess;
2293 }
2294
2295
2296 switch (cmd) {
2297 case MPT3IOCINFO:
2298 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_iocinfo))
2299 ret = _ctl_getiocinfo(ioc, arg);
2300 break;
2301 #ifdef CONFIG_COMPAT
2302 case MPT3COMMAND32:
2303 #endif
2304 case MPT3COMMAND:
2305 {
2306 struct mpt3_ioctl_command __user *uarg;
2307 struct mpt3_ioctl_command karg;
2308
2309 #ifdef CONFIG_COMPAT
2310 if (compat) {
2311 ret = _ctl_compat_mpt_command(ioc, cmd, arg);
2312 break;
2313 }
2314 #endif
2315 if (copy_from_user(&karg, arg, sizeof(karg))) {
2316 pr_err("failure at %s:%d/%s()!\n",
2317 __FILE__, __LINE__, __func__);
2318 ret = -EFAULT;
2319 break;
2320 }
2321
2322 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_command)) {
2323 uarg = arg;
2324 ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf);
2325 }
2326 break;
2327 }
2328 case MPT3EVENTQUERY:
2329 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_eventquery))
2330 ret = _ctl_eventquery(ioc, arg);
2331 break;
2332 case MPT3EVENTENABLE:
2333 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_eventenable))
2334 ret = _ctl_eventenable(ioc, arg);
2335 break;
2336 case MPT3EVENTREPORT:
2337 ret = _ctl_eventreport(ioc, arg);
2338 break;
2339 case MPT3HARDRESET:
2340 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_diag_reset))
2341 ret = _ctl_do_reset(ioc, arg);
2342 break;
2343 case MPT3BTDHMAPPING:
2344 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_btdh_mapping))
2345 ret = _ctl_btdh_mapping(ioc, arg);
2346 break;
2347 case MPT3DIAGREGISTER:
2348 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_register))
2349 ret = _ctl_diag_register(ioc, arg);
2350 break;
2351 case MPT3DIAGUNREGISTER:
2352 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_unregister))
2353 ret = _ctl_diag_unregister(ioc, arg);
2354 break;
2355 case MPT3DIAGQUERY:
2356 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_query))
2357 ret = _ctl_diag_query(ioc, arg);
2358 break;
2359 case MPT3DIAGRELEASE:
2360 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_release))
2361 ret = _ctl_diag_release(ioc, arg);
2362 break;
2363 case MPT3DIAGREADBUFFER:
2364 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_read_buffer))
2365 ret = _ctl_diag_read_buffer(ioc, arg);
2366 break;
2367 default:
2368 dctlprintk(ioc,
2369 ioc_info(ioc, "unsupported ioctl opcode(0x%08x)\n",
2370 cmd));
2371 break;
2372 }
2373
2374 mutex_unlock(&ioc->ctl_cmds.mutex);
2375 out_unlock_pciaccess:
2376 mutex_unlock(&ioc->pci_access_mutex);
2377 return ret;
2378 }
2379
2380 /**
2381 * _ctl_ioctl - mpt3ctl main ioctl entry point (unlocked)
2382 * @file: (struct file)
2383 * @cmd: ioctl opcode
2384 * @arg: ?
2385 */
2386 static long
2387 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2388 {
2389 long ret;
2390
2391 /* pass MPI25_VERSION | MPI26_VERSION value,
2392 * to indicate that this ioctl cmd
2393 * came from mpt3ctl ioctl device.
2394 */
2395 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0,
2396 MPI25_VERSION | MPI26_VERSION);
2397 return ret;
2398 }
2399
2400 /**
2401 * _ctl_mpt2_ioctl - mpt2ctl main ioctl entry point (unlocked)
2402 * @file: (struct file)
2403 * @cmd: ioctl opcode
2404 * @arg: ?
2405 */
2406 static long
2407 _ctl_mpt2_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2408 {
2409 long ret;
2410
2411 /* pass MPI2_VERSION value, to indicate that this ioctl cmd
2412 * came from mpt2ctl ioctl device.
2413 */
2414 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0, MPI2_VERSION);
2415 return ret;
2416 }
2417 #ifdef CONFIG_COMPAT
2418 /**
2419 *_ ctl_ioctl_compat - main ioctl entry point (compat)
2420 * @file: ?
2421 * @cmd: ?
2422 * @arg: ?
2423 *
2424 * This routine handles 32 bit applications in 64bit os.
2425 */
2426 static long
2427 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2428 {
2429 long ret;
2430
2431 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1,
2432 MPI25_VERSION | MPI26_VERSION);
2433 return ret;
2434 }
2435
2436 /**
2437 *_ ctl_mpt2_ioctl_compat - main ioctl entry point (compat)
2438 * @file: ?
2439 * @cmd: ?
2440 * @arg: ?
2441 *
2442 * This routine handles 32 bit applications in 64bit os.
2443 */
2444 static long
2445 _ctl_mpt2_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2446 {
2447 long ret;
2448
2449 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1, MPI2_VERSION);
2450 return ret;
2451 }
2452 #endif
2453
2454 /* scsi host attributes */
2455 /**
2456 * _ctl_version_fw_show - firmware version
2457 * @cdev: pointer to embedded class device
2458 * @attr: ?
2459 * @buf: the buffer returned
2460 *
2461 * A sysfs 'read-only' shost attribute.
2462 */
2463 static ssize_t
2464 _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr,
2465 char *buf)
2466 {
2467 struct Scsi_Host *shost = class_to_shost(cdev);
2468 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2469
2470 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2471 (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2472 (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2473 (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2474 ioc->facts.FWVersion.Word & 0x000000FF);
2475 }
2476 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL);
2477
2478 /**
2479 * _ctl_version_bios_show - bios version
2480 * @cdev: pointer to embedded class device
2481 * @attr: ?
2482 * @buf: the buffer returned
2483 *
2484 * A sysfs 'read-only' shost attribute.
2485 */
2486 static ssize_t
2487 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr,
2488 char *buf)
2489 {
2490 struct Scsi_Host *shost = class_to_shost(cdev);
2491 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2492
2493 u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2494
2495 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2496 (version & 0xFF000000) >> 24,
2497 (version & 0x00FF0000) >> 16,
2498 (version & 0x0000FF00) >> 8,
2499 version & 0x000000FF);
2500 }
2501 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL);
2502
2503 /**
2504 * _ctl_version_mpi_show - MPI (message passing interface) version
2505 * @cdev: pointer to embedded class device
2506 * @attr: ?
2507 * @buf: the buffer returned
2508 *
2509 * A sysfs 'read-only' shost attribute.
2510 */
2511 static ssize_t
2512 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr,
2513 char *buf)
2514 {
2515 struct Scsi_Host *shost = class_to_shost(cdev);
2516 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2517
2518 return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
2519 ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
2520 }
2521 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL);
2522
2523 /**
2524 * _ctl_version_product_show - product name
2525 * @cdev: pointer to embedded class device
2526 * @attr: ?
2527 * @buf: the buffer returned
2528 *
2529 * A sysfs 'read-only' shost attribute.
2530 */
2531 static ssize_t
2532 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr,
2533 char *buf)
2534 {
2535 struct Scsi_Host *shost = class_to_shost(cdev);
2536 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2537
2538 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
2539 }
2540 static DEVICE_ATTR(version_product, S_IRUGO, _ctl_version_product_show, NULL);
2541
2542 /**
2543 * _ctl_version_nvdata_persistent_show - ndvata persistent version
2544 * @cdev: pointer to embedded class device
2545 * @attr: ?
2546 * @buf: the buffer returned
2547 *
2548 * A sysfs 'read-only' shost attribute.
2549 */
2550 static ssize_t
2551 _ctl_version_nvdata_persistent_show(struct device *cdev,
2552 struct device_attribute *attr, char *buf)
2553 {
2554 struct Scsi_Host *shost = class_to_shost(cdev);
2555 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2556
2557 return snprintf(buf, PAGE_SIZE, "%08xh\n",
2558 le32_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
2559 }
2560 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
2561 _ctl_version_nvdata_persistent_show, NULL);
2562
2563 /**
2564 * _ctl_version_nvdata_default_show - nvdata default version
2565 * @cdev: pointer to embedded class device
2566 * @attr: ?
2567 * @buf: the buffer returned
2568 *
2569 * A sysfs 'read-only' shost attribute.
2570 */
2571 static ssize_t
2572 _ctl_version_nvdata_default_show(struct device *cdev, struct device_attribute
2573 *attr, char *buf)
2574 {
2575 struct Scsi_Host *shost = class_to_shost(cdev);
2576 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2577
2578 return snprintf(buf, PAGE_SIZE, "%08xh\n",
2579 le32_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
2580 }
2581 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
2582 _ctl_version_nvdata_default_show, NULL);
2583
2584 /**
2585 * _ctl_board_name_show - board name
2586 * @cdev: pointer to embedded class device
2587 * @attr: ?
2588 * @buf: the buffer returned
2589 *
2590 * A sysfs 'read-only' shost attribute.
2591 */
2592 static ssize_t
2593 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr,
2594 char *buf)
2595 {
2596 struct Scsi_Host *shost = class_to_shost(cdev);
2597 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2598
2599 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
2600 }
2601 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL);
2602
2603 /**
2604 * _ctl_board_assembly_show - board assembly name
2605 * @cdev: pointer to embedded class device
2606 * @attr: ?
2607 * @buf: the buffer returned
2608 *
2609 * A sysfs 'read-only' shost attribute.
2610 */
2611 static ssize_t
2612 _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr,
2613 char *buf)
2614 {
2615 struct Scsi_Host *shost = class_to_shost(cdev);
2616 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2617
2618 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
2619 }
2620 static DEVICE_ATTR(board_assembly, S_IRUGO, _ctl_board_assembly_show, NULL);
2621
2622 /**
2623 * _ctl_board_tracer_show - board tracer number
2624 * @cdev: pointer to embedded class device
2625 * @attr: ?
2626 * @buf: the buffer returned
2627 *
2628 * A sysfs 'read-only' shost attribute.
2629 */
2630 static ssize_t
2631 _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr,
2632 char *buf)
2633 {
2634 struct Scsi_Host *shost = class_to_shost(cdev);
2635 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2636
2637 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
2638 }
2639 static DEVICE_ATTR(board_tracer, S_IRUGO, _ctl_board_tracer_show, NULL);
2640
2641 /**
2642 * _ctl_io_delay_show - io missing delay
2643 * @cdev: pointer to embedded class device
2644 * @attr: ?
2645 * @buf: the buffer returned
2646 *
2647 * This is for firmware implemention for deboucing device
2648 * removal events.
2649 *
2650 * A sysfs 'read-only' shost attribute.
2651 */
2652 static ssize_t
2653 _ctl_io_delay_show(struct device *cdev, struct device_attribute *attr,
2654 char *buf)
2655 {
2656 struct Scsi_Host *shost = class_to_shost(cdev);
2657 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2658
2659 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
2660 }
2661 static DEVICE_ATTR(io_delay, S_IRUGO, _ctl_io_delay_show, NULL);
2662
2663 /**
2664 * _ctl_device_delay_show - device missing delay
2665 * @cdev: pointer to embedded class device
2666 * @attr: ?
2667 * @buf: the buffer returned
2668 *
2669 * This is for firmware implemention for deboucing device
2670 * removal events.
2671 *
2672 * A sysfs 'read-only' shost attribute.
2673 */
2674 static ssize_t
2675 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr,
2676 char *buf)
2677 {
2678 struct Scsi_Host *shost = class_to_shost(cdev);
2679 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2680
2681 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
2682 }
2683 static DEVICE_ATTR(device_delay, S_IRUGO, _ctl_device_delay_show, NULL);
2684
2685 /**
2686 * _ctl_fw_queue_depth_show - global credits
2687 * @cdev: pointer to embedded class device
2688 * @attr: ?
2689 * @buf: the buffer returned
2690 *
2691 * This is firmware queue depth limit
2692 *
2693 * A sysfs 'read-only' shost attribute.
2694 */
2695 static ssize_t
2696 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
2697 char *buf)
2698 {
2699 struct Scsi_Host *shost = class_to_shost(cdev);
2700 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2701
2702 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
2703 }
2704 static DEVICE_ATTR(fw_queue_depth, S_IRUGO, _ctl_fw_queue_depth_show, NULL);
2705
2706 /**
2707 * _ctl_sas_address_show - sas address
2708 * @cdev: pointer to embedded class device
2709 * @attr: ?
2710 * @buf: the buffer returned
2711 *
2712 * This is the controller sas address
2713 *
2714 * A sysfs 'read-only' shost attribute.
2715 */
2716 static ssize_t
2717 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr,
2718 char *buf)
2719
2720 {
2721 struct Scsi_Host *shost = class_to_shost(cdev);
2722 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2723
2724 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2725 (unsigned long long)ioc->sas_hba.sas_address);
2726 }
2727 static DEVICE_ATTR(host_sas_address, S_IRUGO,
2728 _ctl_host_sas_address_show, NULL);
2729
2730 /**
2731 * _ctl_logging_level_show - logging level
2732 * @cdev: pointer to embedded class device
2733 * @attr: ?
2734 * @buf: the buffer returned
2735 *
2736 * A sysfs 'read/write' shost attribute.
2737 */
2738 static ssize_t
2739 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr,
2740 char *buf)
2741 {
2742 struct Scsi_Host *shost = class_to_shost(cdev);
2743 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2744
2745 return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
2746 }
2747 static ssize_t
2748 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr,
2749 const char *buf, size_t count)
2750 {
2751 struct Scsi_Host *shost = class_to_shost(cdev);
2752 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2753 int val = 0;
2754
2755 if (sscanf(buf, "%x", &val) != 1)
2756 return -EINVAL;
2757
2758 ioc->logging_level = val;
2759 ioc_info(ioc, "logging_level=%08xh\n",
2760 ioc->logging_level);
2761 return strlen(buf);
2762 }
2763 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR, _ctl_logging_level_show,
2764 _ctl_logging_level_store);
2765
2766 /**
2767 * _ctl_fwfault_debug_show - show/store fwfault_debug
2768 * @cdev: pointer to embedded class device
2769 * @attr: ?
2770 * @buf: the buffer returned
2771 *
2772 * mpt3sas_fwfault_debug is command line option
2773 * A sysfs 'read/write' shost attribute.
2774 */
2775 static ssize_t
2776 _ctl_fwfault_debug_show(struct device *cdev, struct device_attribute *attr,
2777 char *buf)
2778 {
2779 struct Scsi_Host *shost = class_to_shost(cdev);
2780 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2781
2782 return snprintf(buf, PAGE_SIZE, "%d\n", ioc->fwfault_debug);
2783 }
2784 static ssize_t
2785 _ctl_fwfault_debug_store(struct device *cdev, struct device_attribute *attr,
2786 const char *buf, size_t count)
2787 {
2788 struct Scsi_Host *shost = class_to_shost(cdev);
2789 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2790 int val = 0;
2791
2792 if (sscanf(buf, "%d", &val) != 1)
2793 return -EINVAL;
2794
2795 ioc->fwfault_debug = val;
2796 ioc_info(ioc, "fwfault_debug=%d\n",
2797 ioc->fwfault_debug);
2798 return strlen(buf);
2799 }
2800 static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR,
2801 _ctl_fwfault_debug_show, _ctl_fwfault_debug_store);
2802
2803 /**
2804 * _ctl_ioc_reset_count_show - ioc reset count
2805 * @cdev: pointer to embedded class device
2806 * @attr: ?
2807 * @buf: the buffer returned
2808 *
2809 * This is firmware queue depth limit
2810 *
2811 * A sysfs 'read-only' shost attribute.
2812 */
2813 static ssize_t
2814 _ctl_ioc_reset_count_show(struct device *cdev, struct device_attribute *attr,
2815 char *buf)
2816 {
2817 struct Scsi_Host *shost = class_to_shost(cdev);
2818 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2819
2820 return snprintf(buf, PAGE_SIZE, "%d\n", ioc->ioc_reset_count);
2821 }
2822 static DEVICE_ATTR(ioc_reset_count, S_IRUGO, _ctl_ioc_reset_count_show, NULL);
2823
2824 /**
2825 * _ctl_ioc_reply_queue_count_show - number of reply queues
2826 * @cdev: pointer to embedded class device
2827 * @attr: ?
2828 * @buf: the buffer returned
2829 *
2830 * This is number of reply queues
2831 *
2832 * A sysfs 'read-only' shost attribute.
2833 */
2834 static ssize_t
2835 _ctl_ioc_reply_queue_count_show(struct device *cdev,
2836 struct device_attribute *attr, char *buf)
2837 {
2838 u8 reply_queue_count;
2839 struct Scsi_Host *shost = class_to_shost(cdev);
2840 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2841
2842 if ((ioc->facts.IOCCapabilities &
2843 MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable)
2844 reply_queue_count = ioc->reply_queue_count;
2845 else
2846 reply_queue_count = 1;
2847
2848 return snprintf(buf, PAGE_SIZE, "%d\n", reply_queue_count);
2849 }
2850 static DEVICE_ATTR(reply_queue_count, S_IRUGO, _ctl_ioc_reply_queue_count_show,
2851 NULL);
2852
2853 /**
2854 * _ctl_BRM_status_show - Backup Rail Monitor Status
2855 * @cdev: pointer to embedded class device
2856 * @attr: ?
2857 * @buf: the buffer returned
2858 *
2859 * This is number of reply queues
2860 *
2861 * A sysfs 'read-only' shost attribute.
2862 */
2863 static ssize_t
2864 _ctl_BRM_status_show(struct device *cdev, struct device_attribute *attr,
2865 char *buf)
2866 {
2867 struct Scsi_Host *shost = class_to_shost(cdev);
2868 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2869 Mpi2IOUnitPage3_t *io_unit_pg3 = NULL;
2870 Mpi2ConfigReply_t mpi_reply;
2871 u16 backup_rail_monitor_status = 0;
2872 u16 ioc_status;
2873 int sz;
2874 ssize_t rc = 0;
2875
2876 if (!ioc->is_warpdrive) {
2877 ioc_err(ioc, "%s: BRM attribute is only for warpdrive\n",
2878 __func__);
2879 goto out;
2880 }
2881 /* pci_access_mutex lock acquired by sysfs show path */
2882 mutex_lock(&ioc->pci_access_mutex);
2883 if (ioc->pci_error_recovery || ioc->remove_host) {
2884 mutex_unlock(&ioc->pci_access_mutex);
2885 return 0;
2886 }
2887
2888 /* allocate upto GPIOVal 36 entries */
2889 sz = offsetof(Mpi2IOUnitPage3_t, GPIOVal) + (sizeof(u16) * 36);
2890 io_unit_pg3 = kzalloc(sz, GFP_KERNEL);
2891 if (!io_unit_pg3) {
2892 ioc_err(ioc, "%s: failed allocating memory for iounit_pg3: (%d) bytes\n",
2893 __func__, sz);
2894 goto out;
2895 }
2896
2897 if (mpt3sas_config_get_iounit_pg3(ioc, &mpi_reply, io_unit_pg3, sz) !=
2898 0) {
2899 ioc_err(ioc, "%s: failed reading iounit_pg3\n",
2900 __func__);
2901 goto out;
2902 }
2903
2904 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
2905 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2906 ioc_err(ioc, "%s: iounit_pg3 failed with ioc_status(0x%04x)\n",
2907 __func__, ioc_status);
2908 goto out;
2909 }
2910
2911 if (io_unit_pg3->GPIOCount < 25) {
2912 ioc_err(ioc, "%s: iounit_pg3->GPIOCount less than 25 entries, detected (%d) entries\n",
2913 __func__, io_unit_pg3->GPIOCount);
2914 goto out;
2915 }
2916
2917 /* BRM status is in bit zero of GPIOVal[24] */
2918 backup_rail_monitor_status = le16_to_cpu(io_unit_pg3->GPIOVal[24]);
2919 rc = snprintf(buf, PAGE_SIZE, "%d\n", (backup_rail_monitor_status & 1));
2920
2921 out:
2922 kfree(io_unit_pg3);
2923 mutex_unlock(&ioc->pci_access_mutex);
2924 return rc;
2925 }
2926 static DEVICE_ATTR(BRM_status, S_IRUGO, _ctl_BRM_status_show, NULL);
2927
2928 struct DIAG_BUFFER_START {
2929 __le32 Size;
2930 __le32 DiagVersion;
2931 u8 BufferType;
2932 u8 Reserved[3];
2933 __le32 Reserved1;
2934 __le32 Reserved2;
2935 __le32 Reserved3;
2936 };
2937
2938 /**
2939 * _ctl_host_trace_buffer_size_show - host buffer size (trace only)
2940 * @cdev: pointer to embedded class device
2941 * @attr: ?
2942 * @buf: the buffer returned
2943 *
2944 * A sysfs 'read-only' shost attribute.
2945 */
2946 static ssize_t
2947 _ctl_host_trace_buffer_size_show(struct device *cdev,
2948 struct device_attribute *attr, char *buf)
2949 {
2950 struct Scsi_Host *shost = class_to_shost(cdev);
2951 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
2952 u32 size = 0;
2953 struct DIAG_BUFFER_START *request_data;
2954
2955 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2956 ioc_err(ioc, "%s: host_trace_buffer is not registered\n",
2957 __func__);
2958 return 0;
2959 }
2960
2961 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2962 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
2963 ioc_err(ioc, "%s: host_trace_buffer is not registered\n",
2964 __func__);
2965 return 0;
2966 }
2967
2968 request_data = (struct DIAG_BUFFER_START *)
2969 ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE];
2970 if ((le32_to_cpu(request_data->DiagVersion) == 0x00000000 ||
2971 le32_to_cpu(request_data->DiagVersion) == 0x01000000 ||
2972 le32_to_cpu(request_data->DiagVersion) == 0x01010000) &&
2973 le32_to_cpu(request_data->Reserved3) == 0x4742444c)
2974 size = le32_to_cpu(request_data->Size);
2975
2976 ioc->ring_buffer_sz = size;
2977 return snprintf(buf, PAGE_SIZE, "%d\n", size);
2978 }
2979 static DEVICE_ATTR(host_trace_buffer_size, S_IRUGO,
2980 _ctl_host_trace_buffer_size_show, NULL);
2981
2982 /**
2983 * _ctl_host_trace_buffer_show - firmware ring buffer (trace only)
2984 * @cdev: pointer to embedded class device
2985 * @attr: ?
2986 * @buf: the buffer returned
2987 *
2988 * A sysfs 'read/write' shost attribute.
2989 *
2990 * You will only be able to read 4k bytes of ring buffer at a time.
2991 * In order to read beyond 4k bytes, you will have to write out the
2992 * offset to the same attribute, it will move the pointer.
2993 */
2994 static ssize_t
2995 _ctl_host_trace_buffer_show(struct device *cdev, struct device_attribute *attr,
2996 char *buf)
2997 {
2998 struct Scsi_Host *shost = class_to_shost(cdev);
2999 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3000 void *request_data;
3001 u32 size;
3002
3003 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
3004 ioc_err(ioc, "%s: host_trace_buffer is not registered\n",
3005 __func__);
3006 return 0;
3007 }
3008
3009 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3010 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) {
3011 ioc_err(ioc, "%s: host_trace_buffer is not registered\n",
3012 __func__);
3013 return 0;
3014 }
3015
3016 if (ioc->ring_buffer_offset > ioc->ring_buffer_sz)
3017 return 0;
3018
3019 size = ioc->ring_buffer_sz - ioc->ring_buffer_offset;
3020 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3021 request_data = ioc->diag_buffer[0] + ioc->ring_buffer_offset;
3022 memcpy(buf, request_data, size);
3023 return size;
3024 }
3025
3026 static ssize_t
3027 _ctl_host_trace_buffer_store(struct device *cdev, struct device_attribute *attr,
3028 const char *buf, size_t count)
3029 {
3030 struct Scsi_Host *shost = class_to_shost(cdev);
3031 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3032 int val = 0;
3033
3034 if (sscanf(buf, "%d", &val) != 1)
3035 return -EINVAL;
3036
3037 ioc->ring_buffer_offset = val;
3038 return strlen(buf);
3039 }
3040 static DEVICE_ATTR(host_trace_buffer, S_IRUGO | S_IWUSR,
3041 _ctl_host_trace_buffer_show, _ctl_host_trace_buffer_store);
3042
3043
3044 /*****************************************/
3045
3046 /**
3047 * _ctl_host_trace_buffer_enable_show - firmware ring buffer (trace only)
3048 * @cdev: pointer to embedded class device
3049 * @attr: ?
3050 * @buf: the buffer returned
3051 *
3052 * A sysfs 'read/write' shost attribute.
3053 *
3054 * This is a mechnism to post/release host_trace_buffers
3055 */
3056 static ssize_t
3057 _ctl_host_trace_buffer_enable_show(struct device *cdev,
3058 struct device_attribute *attr, char *buf)
3059 {
3060 struct Scsi_Host *shost = class_to_shost(cdev);
3061 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3062
3063 if ((!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) ||
3064 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3065 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0))
3066 return snprintf(buf, PAGE_SIZE, "off\n");
3067 else if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3068 MPT3_DIAG_BUFFER_IS_RELEASED))
3069 return snprintf(buf, PAGE_SIZE, "release\n");
3070 else
3071 return snprintf(buf, PAGE_SIZE, "post\n");
3072 }
3073
3074 static ssize_t
3075 _ctl_host_trace_buffer_enable_store(struct device *cdev,
3076 struct device_attribute *attr, const char *buf, size_t count)
3077 {
3078 struct Scsi_Host *shost = class_to_shost(cdev);
3079 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3080 char str[10] = "";
3081 struct mpt3_diag_register diag_register;
3082 u8 issue_reset = 0;
3083
3084 /* don't allow post/release occurr while recovery is active */
3085 if (ioc->shost_recovery || ioc->remove_host ||
3086 ioc->pci_error_recovery || ioc->is_driver_loading)
3087 return -EBUSY;
3088
3089 if (sscanf(buf, "%9s", str) != 1)
3090 return -EINVAL;
3091
3092 if (!strcmp(str, "post")) {
3093 /* exit out if host buffers are already posted */
3094 if ((ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) &&
3095 (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3096 MPT3_DIAG_BUFFER_IS_REGISTERED) &&
3097 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3098 MPT3_DIAG_BUFFER_IS_RELEASED) == 0))
3099 goto out;
3100 memset(&diag_register, 0, sizeof(struct mpt3_diag_register));
3101 ioc_info(ioc, "posting host trace buffers\n");
3102 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
3103 diag_register.requested_buffer_size = (1024 * 1024);
3104 diag_register.unique_id = 0x7075900;
3105 ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] = 0;
3106 _ctl_diag_register_2(ioc, &diag_register);
3107 } else if (!strcmp(str, "release")) {
3108 /* exit out if host buffers are already released */
3109 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE])
3110 goto out;
3111 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3112 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0)
3113 goto out;
3114 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
3115 MPT3_DIAG_BUFFER_IS_RELEASED))
3116 goto out;
3117 ioc_info(ioc, "releasing host trace buffer\n");
3118 mpt3sas_send_diag_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE,
3119 &issue_reset);
3120 }
3121
3122 out:
3123 return strlen(buf);
3124 }
3125 static DEVICE_ATTR(host_trace_buffer_enable, S_IRUGO | S_IWUSR,
3126 _ctl_host_trace_buffer_enable_show,
3127 _ctl_host_trace_buffer_enable_store);
3128
3129 /*********** diagnostic trigger suppport *********************************/
3130
3131 /**
3132 * _ctl_diag_trigger_master_show - show the diag_trigger_master attribute
3133 * @cdev: pointer to embedded class device
3134 * @attr: ?
3135 * @buf: the buffer returned
3136 *
3137 * A sysfs 'read/write' shost attribute.
3138 */
3139 static ssize_t
3140 _ctl_diag_trigger_master_show(struct device *cdev,
3141 struct device_attribute *attr, char *buf)
3142
3143 {
3144 struct Scsi_Host *shost = class_to_shost(cdev);
3145 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3146 unsigned long flags;
3147 ssize_t rc;
3148
3149 spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3150 rc = sizeof(struct SL_WH_MASTER_TRIGGER_T);
3151 memcpy(buf, &ioc->diag_trigger_master, rc);
3152 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3153 return rc;
3154 }
3155
3156 /**
3157 * _ctl_diag_trigger_master_store - store the diag_trigger_master attribute
3158 * @cdev: pointer to embedded class device
3159 * @attr: ?
3160 * @buf: the buffer returned
3161 * @count: ?
3162 *
3163 * A sysfs 'read/write' shost attribute.
3164 */
3165 static ssize_t
3166 _ctl_diag_trigger_master_store(struct device *cdev,
3167 struct device_attribute *attr, const char *buf, size_t count)
3168
3169 {
3170 struct Scsi_Host *shost = class_to_shost(cdev);
3171 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3172 unsigned long flags;
3173 ssize_t rc;
3174
3175 spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3176 rc = min(sizeof(struct SL_WH_MASTER_TRIGGER_T), count);
3177 memset(&ioc->diag_trigger_master, 0,
3178 sizeof(struct SL_WH_MASTER_TRIGGER_T));
3179 memcpy(&ioc->diag_trigger_master, buf, rc);
3180 ioc->diag_trigger_master.MasterData |=
3181 (MASTER_TRIGGER_FW_FAULT + MASTER_TRIGGER_ADAPTER_RESET);
3182 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3183 return rc;
3184 }
3185 static DEVICE_ATTR(diag_trigger_master, S_IRUGO | S_IWUSR,
3186 _ctl_diag_trigger_master_show, _ctl_diag_trigger_master_store);
3187
3188
3189 /**
3190 * _ctl_diag_trigger_event_show - show the diag_trigger_event attribute
3191 * @cdev: pointer to embedded class device
3192 * @attr: ?
3193 * @buf: the buffer returned
3194 *
3195 * A sysfs 'read/write' shost attribute.
3196 */
3197 static ssize_t
3198 _ctl_diag_trigger_event_show(struct device *cdev,
3199 struct device_attribute *attr, char *buf)
3200 {
3201 struct Scsi_Host *shost = class_to_shost(cdev);
3202 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3203 unsigned long flags;
3204 ssize_t rc;
3205
3206 spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3207 rc = sizeof(struct SL_WH_EVENT_TRIGGERS_T);
3208 memcpy(buf, &ioc->diag_trigger_event, rc);
3209 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3210 return rc;
3211 }
3212
3213 /**
3214 * _ctl_diag_trigger_event_store - store the diag_trigger_event attribute
3215 * @cdev: pointer to embedded class device
3216 * @attr: ?
3217 * @buf: the buffer returned
3218 * @count: ?
3219 *
3220 * A sysfs 'read/write' shost attribute.
3221 */
3222 static ssize_t
3223 _ctl_diag_trigger_event_store(struct device *cdev,
3224 struct device_attribute *attr, const char *buf, size_t count)
3225
3226 {
3227 struct Scsi_Host *shost = class_to_shost(cdev);
3228 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3229 unsigned long flags;
3230 ssize_t sz;
3231
3232 spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3233 sz = min(sizeof(struct SL_WH_EVENT_TRIGGERS_T), count);
3234 memset(&ioc->diag_trigger_event, 0,
3235 sizeof(struct SL_WH_EVENT_TRIGGERS_T));
3236 memcpy(&ioc->diag_trigger_event, buf, sz);
3237 if (ioc->diag_trigger_event.ValidEntries > NUM_VALID_ENTRIES)
3238 ioc->diag_trigger_event.ValidEntries = NUM_VALID_ENTRIES;
3239 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3240 return sz;
3241 }
3242 static DEVICE_ATTR(diag_trigger_event, S_IRUGO | S_IWUSR,
3243 _ctl_diag_trigger_event_show, _ctl_diag_trigger_event_store);
3244
3245
3246 /**
3247 * _ctl_diag_trigger_scsi_show - show the diag_trigger_scsi attribute
3248 * @cdev: pointer to embedded class device
3249 * @attr: ?
3250 * @buf: the buffer returned
3251 *
3252 * A sysfs 'read/write' shost attribute.
3253 */
3254 static ssize_t
3255 _ctl_diag_trigger_scsi_show(struct device *cdev,
3256 struct device_attribute *attr, char *buf)
3257 {
3258 struct Scsi_Host *shost = class_to_shost(cdev);
3259 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3260 unsigned long flags;
3261 ssize_t rc;
3262
3263 spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3264 rc = sizeof(struct SL_WH_SCSI_TRIGGERS_T);
3265 memcpy(buf, &ioc->diag_trigger_scsi, rc);
3266 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3267 return rc;
3268 }
3269
3270 /**
3271 * _ctl_diag_trigger_scsi_store - store the diag_trigger_scsi attribute
3272 * @cdev: pointer to embedded class device
3273 * @attr: ?
3274 * @buf: the buffer returned
3275 * @count: ?
3276 *
3277 * A sysfs 'read/write' shost attribute.
3278 */
3279 static ssize_t
3280 _ctl_diag_trigger_scsi_store(struct device *cdev,
3281 struct device_attribute *attr, const char *buf, size_t count)
3282 {
3283 struct Scsi_Host *shost = class_to_shost(cdev);
3284 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3285 unsigned long flags;
3286 ssize_t sz;
3287
3288 spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3289 sz = min(sizeof(struct SL_WH_SCSI_TRIGGERS_T), count);
3290 memset(&ioc->diag_trigger_scsi, 0,
3291 sizeof(struct SL_WH_EVENT_TRIGGERS_T));
3292 memcpy(&ioc->diag_trigger_scsi, buf, sz);
3293 if (ioc->diag_trigger_scsi.ValidEntries > NUM_VALID_ENTRIES)
3294 ioc->diag_trigger_scsi.ValidEntries = NUM_VALID_ENTRIES;
3295 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3296 return sz;
3297 }
3298 static DEVICE_ATTR(diag_trigger_scsi, S_IRUGO | S_IWUSR,
3299 _ctl_diag_trigger_scsi_show, _ctl_diag_trigger_scsi_store);
3300
3301
3302 /**
3303 * _ctl_diag_trigger_scsi_show - show the diag_trigger_mpi attribute
3304 * @cdev: pointer to embedded class device
3305 * @attr: ?
3306 * @buf: the buffer returned
3307 *
3308 * A sysfs 'read/write' shost attribute.
3309 */
3310 static ssize_t
3311 _ctl_diag_trigger_mpi_show(struct device *cdev,
3312 struct device_attribute *attr, char *buf)
3313 {
3314 struct Scsi_Host *shost = class_to_shost(cdev);
3315 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3316 unsigned long flags;
3317 ssize_t rc;
3318
3319 spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3320 rc = sizeof(struct SL_WH_MPI_TRIGGERS_T);
3321 memcpy(buf, &ioc->diag_trigger_mpi, rc);
3322 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3323 return rc;
3324 }
3325
3326 /**
3327 * _ctl_diag_trigger_mpi_store - store the diag_trigger_mpi attribute
3328 * @cdev: pointer to embedded class device
3329 * @attr: ?
3330 * @buf: the buffer returned
3331 * @count: ?
3332 *
3333 * A sysfs 'read/write' shost attribute.
3334 */
3335 static ssize_t
3336 _ctl_diag_trigger_mpi_store(struct device *cdev,
3337 struct device_attribute *attr, const char *buf, size_t count)
3338 {
3339 struct Scsi_Host *shost = class_to_shost(cdev);
3340 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
3341 unsigned long flags;
3342 ssize_t sz;
3343
3344 spin_lock_irqsave(&ioc->diag_trigger_lock, flags);
3345 sz = min(sizeof(struct SL_WH_MPI_TRIGGERS_T), count);
3346 memset(&ioc->diag_trigger_mpi, 0,
3347 sizeof(ioc->diag_trigger_mpi));
3348 memcpy(&ioc->diag_trigger_mpi, buf, sz);
3349 if (ioc->diag_trigger_mpi.ValidEntries > NUM_VALID_ENTRIES)
3350 ioc->diag_trigger_mpi.ValidEntries = NUM_VALID_ENTRIES;
3351 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags);
3352 return sz;
3353 }
3354
3355 static DEVICE_ATTR(diag_trigger_mpi, S_IRUGO | S_IWUSR,
3356 _ctl_diag_trigger_mpi_show, _ctl_diag_trigger_mpi_store);
3357
3358 /*********** diagnostic trigger suppport *** END ****************************/
3359
3360 /*****************************************/
3361
3362 struct device_attribute *mpt3sas_host_attrs[] = {
3363 &dev_attr_version_fw,
3364 &dev_attr_version_bios,
3365 &dev_attr_version_mpi,
3366 &dev_attr_version_product,
3367 &dev_attr_version_nvdata_persistent,
3368 &dev_attr_version_nvdata_default,
3369 &dev_attr_board_name,
3370 &dev_attr_board_assembly,
3371 &dev_attr_board_tracer,
3372 &dev_attr_io_delay,
3373 &dev_attr_device_delay,
3374 &dev_attr_logging_level,
3375 &dev_attr_fwfault_debug,
3376 &dev_attr_fw_queue_depth,
3377 &dev_attr_host_sas_address,
3378 &dev_attr_ioc_reset_count,
3379 &dev_attr_host_trace_buffer_size,
3380 &dev_attr_host_trace_buffer,
3381 &dev_attr_host_trace_buffer_enable,
3382 &dev_attr_reply_queue_count,
3383 &dev_attr_diag_trigger_master,
3384 &dev_attr_diag_trigger_event,
3385 &dev_attr_diag_trigger_scsi,
3386 &dev_attr_diag_trigger_mpi,
3387 &dev_attr_BRM_status,
3388 NULL,
3389 };
3390
3391 /* device attributes */
3392
3393 /**
3394 * _ctl_device_sas_address_show - sas address
3395 * @dev: pointer to embedded class device
3396 * @attr: ?
3397 * @buf: the buffer returned
3398 *
3399 * This is the sas address for the target
3400 *
3401 * A sysfs 'read-only' shost attribute.
3402 */
3403 static ssize_t
3404 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr,
3405 char *buf)
3406 {
3407 struct scsi_device *sdev = to_scsi_device(dev);
3408 struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3409
3410 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
3411 (unsigned long long)sas_device_priv_data->sas_target->sas_address);
3412 }
3413 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL);
3414
3415 /**
3416 * _ctl_device_handle_show - device handle
3417 * @dev: pointer to embedded class device
3418 * @attr: ?
3419 * @buf: the buffer returned
3420 *
3421 * This is the firmware assigned device handle
3422 *
3423 * A sysfs 'read-only' shost attribute.
3424 */
3425 static ssize_t
3426 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr,
3427 char *buf)
3428 {
3429 struct scsi_device *sdev = to_scsi_device(dev);
3430 struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3431
3432 return snprintf(buf, PAGE_SIZE, "0x%04x\n",
3433 sas_device_priv_data->sas_target->handle);
3434 }
3435 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL);
3436
3437 /**
3438 * _ctl_device_ncq_io_prio_show - send prioritized io commands to device
3439 * @dev: pointer to embedded device
3440 * @attr: ?
3441 * @buf: the buffer returned
3442 *
3443 * A sysfs 'read/write' sdev attribute, only works with SATA
3444 */
3445 static ssize_t
3446 _ctl_device_ncq_prio_enable_show(struct device *dev,
3447 struct device_attribute *attr, char *buf)
3448 {
3449 struct scsi_device *sdev = to_scsi_device(dev);
3450 struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3451
3452 return snprintf(buf, PAGE_SIZE, "%d\n",
3453 sas_device_priv_data->ncq_prio_enable);
3454 }
3455
3456 static ssize_t
3457 _ctl_device_ncq_prio_enable_store(struct device *dev,
3458 struct device_attribute *attr,
3459 const char *buf, size_t count)
3460 {
3461 struct scsi_device *sdev = to_scsi_device(dev);
3462 struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3463 bool ncq_prio_enable = 0;
3464
3465 if (kstrtobool(buf, &ncq_prio_enable))
3466 return -EINVAL;
3467
3468 if (!scsih_ncq_prio_supp(sdev))
3469 return -EINVAL;
3470
3471 sas_device_priv_data->ncq_prio_enable = ncq_prio_enable;
3472 return strlen(buf);
3473 }
3474 static DEVICE_ATTR(sas_ncq_prio_enable, S_IRUGO | S_IWUSR,
3475 _ctl_device_ncq_prio_enable_show,
3476 _ctl_device_ncq_prio_enable_store);
3477
3478 struct device_attribute *mpt3sas_dev_attrs[] = {
3479 &dev_attr_sas_address,
3480 &dev_attr_sas_device_handle,
3481 &dev_attr_sas_ncq_prio_enable,
3482 NULL,
3483 };
3484
3485 /* file operations table for mpt3ctl device */
3486 static const struct file_operations ctl_fops = {
3487 .owner = THIS_MODULE,
3488 .unlocked_ioctl = _ctl_ioctl,
3489 .poll = _ctl_poll,
3490 .fasync = _ctl_fasync,
3491 #ifdef CONFIG_COMPAT
3492 .compat_ioctl = _ctl_ioctl_compat,
3493 #endif
3494 };
3495
3496 /* file operations table for mpt2ctl device */
3497 static const struct file_operations ctl_gen2_fops = {
3498 .owner = THIS_MODULE,
3499 .unlocked_ioctl = _ctl_mpt2_ioctl,
3500 .poll = _ctl_poll,
3501 .fasync = _ctl_fasync,
3502 #ifdef CONFIG_COMPAT
3503 .compat_ioctl = _ctl_mpt2_ioctl_compat,
3504 #endif
3505 };
3506
3507 static struct miscdevice ctl_dev = {
3508 .minor = MPT3SAS_MINOR,
3509 .name = MPT3SAS_DEV_NAME,
3510 .fops = &ctl_fops,
3511 };
3512
3513 static struct miscdevice gen2_ctl_dev = {
3514 .minor = MPT2SAS_MINOR,
3515 .name = MPT2SAS_DEV_NAME,
3516 .fops = &ctl_gen2_fops,
3517 };
3518
3519 /**
3520 * mpt3sas_ctl_init - main entry point for ctl.
3521 * @hbas_to_enumerate: ?
3522 */
3523 void
3524 mpt3sas_ctl_init(ushort hbas_to_enumerate)
3525 {
3526 async_queue = NULL;
3527
3528 /* Don't register mpt3ctl ioctl device if
3529 * hbas_to_enumarate is one.
3530 */
3531 if (hbas_to_enumerate != 1)
3532 if (misc_register(&ctl_dev) < 0)
3533 pr_err("%s can't register misc device [minor=%d]\n",
3534 MPT3SAS_DRIVER_NAME, MPT3SAS_MINOR);
3535
3536 /* Don't register mpt3ctl ioctl device if
3537 * hbas_to_enumarate is two.
3538 */
3539 if (hbas_to_enumerate != 2)
3540 if (misc_register(&gen2_ctl_dev) < 0)
3541 pr_err("%s can't register misc device [minor=%d]\n",
3542 MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
3543
3544 init_waitqueue_head(&ctl_poll_wait);
3545 }
3546
3547 /**
3548 * mpt3sas_ctl_exit - exit point for ctl
3549 * @hbas_to_enumerate: ?
3550 */
3551 void
3552 mpt3sas_ctl_exit(ushort hbas_to_enumerate)
3553 {
3554 struct MPT3SAS_ADAPTER *ioc;
3555 int i;
3556
3557 list_for_each_entry(ioc, &mpt3sas_ioc_list, list) {
3558
3559 /* free memory associated to diag buffers */
3560 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
3561 if (!ioc->diag_buffer[i])
3562 continue;
3563 if (!(ioc->diag_buffer_status[i] &
3564 MPT3_DIAG_BUFFER_IS_REGISTERED))
3565 continue;
3566 if ((ioc->diag_buffer_status[i] &
3567 MPT3_DIAG_BUFFER_IS_RELEASED))
3568 continue;
3569 dma_free_coherent(&ioc->pdev->dev,
3570 ioc->diag_buffer_sz[i],
3571 ioc->diag_buffer[i],
3572 ioc->diag_buffer_dma[i]);
3573 ioc->diag_buffer[i] = NULL;
3574 ioc->diag_buffer_status[i] = 0;
3575 }
3576
3577 kfree(ioc->event_log);
3578 }
3579 if (hbas_to_enumerate != 1)
3580 misc_deregister(&ctl_dev);
3581 if (hbas_to_enumerate != 2)
3582 misc_deregister(&gen2_ctl_dev);
3583 }
Linux with added FPC-III support