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compat: return -EFAULT on error in waitid()
[linux/fpc-iii.git] / drivers / scsi / mpt2sas / mpt2sas_ctl.c
blob08685c4cf231b99c89c9eb3b91f1dcbc4641b508
1 /*
2 * Management Module Support for MPT (Message Passing Technology) based
3 * controllers
4 *
5 * This code is based on drivers/scsi/mpt2sas/mpt2_ctl.c
6 * Copyright (C) 2007-2012 LSI Corporation
7 * (mailto:DL-MPTFusionLinux@lsi.com)
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * NO WARRANTY
20 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
21 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
22 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
23 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
24 * solely responsible for determining the appropriateness of using and
25 * distributing the Program and assumes all risks associated with its
26 * exercise of rights under this Agreement, including but not limited to
27 * the risks and costs of program errors, damage to or loss of data,
28 * programs or equipment, and unavailability or interruption of operations.
29
30 * DISCLAIMER OF LIABILITY
31 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
32 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
34 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
35 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
36 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
37 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
38
39 * You should have received a copy of the GNU General Public License
40 * along with this program; if not, write to the Free Software
41 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
42 * USA.
43 */
44
45 #include <linux/kernel.h>
46 #include <linux/module.h>
47 #include <linux/errno.h>
48 #include <linux/init.h>
49 #include <linux/slab.h>
50 #include <linux/types.h>
51 #include <linux/pci.h>
52 #include <linux/delay.h>
53 #include <linux/mutex.h>
54 #include <linux/compat.h>
55 #include <linux/poll.h>
56
57 #include <linux/io.h>
58 #include <linux/uaccess.h>
59
60 #include "mpt2sas_base.h"
61 #include "mpt2sas_ctl.h"
62
63 static DEFINE_MUTEX(_ctl_mutex);
64 static struct fasync_struct *async_queue;
65 static DECLARE_WAIT_QUEUE_HEAD(ctl_poll_wait);
66
67 static int _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type,
68 u8 *issue_reset);
69
70 /**
71 * enum block_state - blocking state
72 * @NON_BLOCKING: non blocking
73 * @BLOCKING: blocking
74 *
75 * These states are for ioctls that need to wait for a response
76 * from firmware, so they probably require sleep.
77 */
78 enum block_state {
79 NON_BLOCKING,
80 BLOCKING,
81 };
82
83 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
84 /**
85 * _ctl_sas_device_find_by_handle - sas device search
86 * @ioc: per adapter object
87 * @handle: sas device handle (assigned by firmware)
88 * Context: Calling function should acquire ioc->sas_device_lock
89 *
90 * This searches for sas_device based on sas_address, then return sas_device
91 * object.
92 */
93 static struct _sas_device *
94 _ctl_sas_device_find_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle)
95 {
96 struct _sas_device *sas_device, *r;
97
98 r = NULL;
99 list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
100 if (sas_device->handle != handle)
101 continue;
102 r = sas_device;
103 goto out;
104 }
105
106 out:
107 return r;
108 }
109
110 /**
111 * _ctl_display_some_debug - debug routine
112 * @ioc: per adapter object
113 * @smid: system request message index
114 * @calling_function_name: string pass from calling function
115 * @mpi_reply: reply message frame
116 * Context: none.
117 *
118 * Function for displaying debug info helpful when debugging issues
119 * in this module.
120 */
121 static void
122 _ctl_display_some_debug(struct MPT2SAS_ADAPTER *ioc, u16 smid,
123 char *calling_function_name, MPI2DefaultReply_t *mpi_reply)
124 {
125 Mpi2ConfigRequest_t *mpi_request;
126 char *desc = NULL;
127
128 if (!(ioc->logging_level & MPT_DEBUG_IOCTL))
129 return;
130
131 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
132 switch (mpi_request->Function) {
133 case MPI2_FUNCTION_SCSI_IO_REQUEST:
134 {
135 Mpi2SCSIIORequest_t *scsi_request =
136 (Mpi2SCSIIORequest_t *)mpi_request;
137
138 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
139 "scsi_io, cmd(0x%02x), cdb_len(%d)",
140 scsi_request->CDB.CDB32[0],
141 le16_to_cpu(scsi_request->IoFlags) & 0xF);
142 desc = ioc->tmp_string;
143 break;
144 }
145 case MPI2_FUNCTION_SCSI_TASK_MGMT:
146 desc = "task_mgmt";
147 break;
148 case MPI2_FUNCTION_IOC_INIT:
149 desc = "ioc_init";
150 break;
151 case MPI2_FUNCTION_IOC_FACTS:
152 desc = "ioc_facts";
153 break;
154 case MPI2_FUNCTION_CONFIG:
155 {
156 Mpi2ConfigRequest_t *config_request =
157 (Mpi2ConfigRequest_t *)mpi_request;
158
159 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
160 "config, type(0x%02x), ext_type(0x%02x), number(%d)",
161 (config_request->Header.PageType &
162 MPI2_CONFIG_PAGETYPE_MASK), config_request->ExtPageType,
163 config_request->Header.PageNumber);
164 desc = ioc->tmp_string;
165 break;
166 }
167 case MPI2_FUNCTION_PORT_FACTS:
168 desc = "port_facts";
169 break;
170 case MPI2_FUNCTION_PORT_ENABLE:
171 desc = "port_enable";
172 break;
173 case MPI2_FUNCTION_EVENT_NOTIFICATION:
174 desc = "event_notification";
175 break;
176 case MPI2_FUNCTION_FW_DOWNLOAD:
177 desc = "fw_download";
178 break;
179 case MPI2_FUNCTION_FW_UPLOAD:
180 desc = "fw_upload";
181 break;
182 case MPI2_FUNCTION_RAID_ACTION:
183 desc = "raid_action";
184 break;
185 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
186 {
187 Mpi2SCSIIORequest_t *scsi_request =
188 (Mpi2SCSIIORequest_t *)mpi_request;
189
190 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
191 "raid_pass, cmd(0x%02x), cdb_len(%d)",
192 scsi_request->CDB.CDB32[0],
193 le16_to_cpu(scsi_request->IoFlags) & 0xF);
194 desc = ioc->tmp_string;
195 break;
196 }
197 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
198 desc = "sas_iounit_cntl";
199 break;
200 case MPI2_FUNCTION_SATA_PASSTHROUGH:
201 desc = "sata_pass";
202 break;
203 case MPI2_FUNCTION_DIAG_BUFFER_POST:
204 desc = "diag_buffer_post";
205 break;
206 case MPI2_FUNCTION_DIAG_RELEASE:
207 desc = "diag_release";
208 break;
209 case MPI2_FUNCTION_SMP_PASSTHROUGH:
210 desc = "smp_passthrough";
211 break;
212 }
213
214 if (!desc)
215 return;
216
217 printk(MPT2SAS_INFO_FMT "%s: %s, smid(%d)\n",
218 ioc->name, calling_function_name, desc, smid);
219
220 if (!mpi_reply)
221 return;
222
223 if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo)
224 printk(MPT2SAS_INFO_FMT
225 "\tiocstatus(0x%04x), loginfo(0x%08x)\n",
226 ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
227 le32_to_cpu(mpi_reply->IOCLogInfo));
228
229 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
230 mpi_request->Function ==
231 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
232 Mpi2SCSIIOReply_t *scsi_reply =
233 (Mpi2SCSIIOReply_t *)mpi_reply;
234 struct _sas_device *sas_device = NULL;
235 unsigned long flags;
236
237 spin_lock_irqsave(&ioc->sas_device_lock, flags);
238 sas_device = _ctl_sas_device_find_by_handle(ioc,
239 le16_to_cpu(scsi_reply->DevHandle));
240 if (sas_device) {
241 printk(MPT2SAS_WARN_FMT "\tsas_address(0x%016llx), "
242 "phy(%d)\n", ioc->name, (unsigned long long)
243 sas_device->sas_address, sas_device->phy);
244 printk(MPT2SAS_WARN_FMT
245 "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
246 ioc->name, sas_device->enclosure_logical_id,
247 sas_device->slot);
248 }
249 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
250 if (scsi_reply->SCSIState || scsi_reply->SCSIStatus)
251 printk(MPT2SAS_INFO_FMT
252 "\tscsi_state(0x%02x), scsi_status"
253 "(0x%02x)\n", ioc->name,
254 scsi_reply->SCSIState,
255 scsi_reply->SCSIStatus);
256 }
257 }
258 #endif
259
260 /**
261 * mpt2sas_ctl_done - ctl module completion routine
262 * @ioc: per adapter object
263 * @smid: system request message index
264 * @msix_index: MSIX table index supplied by the OS
265 * @reply: reply message frame(lower 32bit addr)
266 * Context: none.
267 *
268 * The callback handler when using ioc->ctl_cb_idx.
269 *
270 * Return 1 meaning mf should be freed from _base_interrupt
271 * 0 means the mf is freed from this function.
272 */
273 u8
274 mpt2sas_ctl_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
275 u32 reply)
276 {
277 MPI2DefaultReply_t *mpi_reply;
278 Mpi2SCSIIOReply_t *scsiio_reply;
279 const void *sense_data;
280 u32 sz;
281
282 if (ioc->ctl_cmds.status == MPT2_CMD_NOT_USED)
283 return 1;
284 if (ioc->ctl_cmds.smid != smid)
285 return 1;
286 ioc->ctl_cmds.status |= MPT2_CMD_COMPLETE;
287 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
288 if (mpi_reply) {
289 memcpy(ioc->ctl_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
290 ioc->ctl_cmds.status |= MPT2_CMD_REPLY_VALID;
291 /* get sense data */
292 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
293 mpi_reply->Function ==
294 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
295 scsiio_reply = (Mpi2SCSIIOReply_t *)mpi_reply;
296 if (scsiio_reply->SCSIState &
297 MPI2_SCSI_STATE_AUTOSENSE_VALID) {
298 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
299 le32_to_cpu(scsiio_reply->SenseCount));
300 sense_data = mpt2sas_base_get_sense_buffer(ioc,
301 smid);
302 memcpy(ioc->ctl_cmds.sense, sense_data, sz);
303 }
304 }
305 }
306 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
307 _ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply);
308 #endif
309 ioc->ctl_cmds.status &= ~MPT2_CMD_PENDING;
310 complete(&ioc->ctl_cmds.done);
311 return 1;
312 }
313
314 /**
315 * _ctl_check_event_type - determines when an event needs logging
316 * @ioc: per adapter object
317 * @event: firmware event
318 *
319 * The bitmask in ioc->event_type[] indicates which events should be
320 * be saved in the driver event_log. This bitmask is set by application.
321 *
322 * Returns 1 when event should be captured, or zero means no match.
323 */
324 static int
325 _ctl_check_event_type(struct MPT2SAS_ADAPTER *ioc, u16 event)
326 {
327 u16 i;
328 u32 desired_event;
329
330 if (event >= 128 || !event || !ioc->event_log)
331 return 0;
332
333 desired_event = (1 << (event % 32));
334 if (!desired_event)
335 desired_event = 1;
336 i = event / 32;
337 return desired_event & ioc->event_type[i];
338 }
339
340 /**
341 * mpt2sas_ctl_add_to_event_log - add event
342 * @ioc: per adapter object
343 * @mpi_reply: reply message frame
344 *
345 * Return nothing.
346 */
347 void
348 mpt2sas_ctl_add_to_event_log(struct MPT2SAS_ADAPTER *ioc,
349 Mpi2EventNotificationReply_t *mpi_reply)
350 {
351 struct MPT2_IOCTL_EVENTS *event_log;
352 u16 event;
353 int i;
354 u32 sz, event_data_sz;
355 u8 send_aen = 0;
356
357 if (!ioc->event_log)
358 return;
359
360 event = le16_to_cpu(mpi_reply->Event);
361
362 if (_ctl_check_event_type(ioc, event)) {
363
364 /* insert entry into circular event_log */
365 i = ioc->event_context % MPT2SAS_CTL_EVENT_LOG_SIZE;
366 event_log = ioc->event_log;
367 event_log[i].event = event;
368 event_log[i].context = ioc->event_context++;
369
370 event_data_sz = le16_to_cpu(mpi_reply->EventDataLength)*4;
371 sz = min_t(u32, event_data_sz, MPT2_EVENT_DATA_SIZE);
372 memset(event_log[i].data, 0, MPT2_EVENT_DATA_SIZE);
373 memcpy(event_log[i].data, mpi_reply->EventData, sz);
374 send_aen = 1;
375 }
376
377 /* This aen_event_read_flag flag is set until the
378 * application has read the event log.
379 * For MPI2_EVENT_LOG_ENTRY_ADDED, we always notify.
380 */
381 if (event == MPI2_EVENT_LOG_ENTRY_ADDED ||
382 (send_aen && !ioc->aen_event_read_flag)) {
383 ioc->aen_event_read_flag = 1;
384 wake_up_interruptible(&ctl_poll_wait);
385 if (async_queue)
386 kill_fasync(&async_queue, SIGIO, POLL_IN);
387 }
388 }
389
390 /**
391 * mpt2sas_ctl_event_callback - firmware event handler (called at ISR time)
392 * @ioc: per adapter object
393 * @msix_index: MSIX table index supplied by the OS
394 * @reply: reply message frame(lower 32bit addr)
395 * Context: interrupt.
396 *
397 * This function merely adds a new work task into ioc->firmware_event_thread.
398 * The tasks are worked from _firmware_event_work in user context.
399 *
400 * Return 1 meaning mf should be freed from _base_interrupt
401 * 0 means the mf is freed from this function.
402 */
403 u8
404 mpt2sas_ctl_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 msix_index,
405 u32 reply)
406 {
407 Mpi2EventNotificationReply_t *mpi_reply;
408
409 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
410 mpt2sas_ctl_add_to_event_log(ioc, mpi_reply);
411 return 1;
412 }
413
414 /**
415 * _ctl_verify_adapter - validates ioc_number passed from application
416 * @ioc: per adapter object
417 * @iocpp: The ioc pointer is returned in this.
418 *
419 * Return (-1) means error, else ioc_number.
420 */
421 static int
422 _ctl_verify_adapter(int ioc_number, struct MPT2SAS_ADAPTER **iocpp)
423 {
424 struct MPT2SAS_ADAPTER *ioc;
425
426 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
427 if (ioc->id != ioc_number)
428 continue;
429 *iocpp = ioc;
430 return ioc_number;
431 }
432 *iocpp = NULL;
433 return -1;
434 }
435
436 /**
437 * mpt2sas_ctl_reset_handler - reset callback handler (for ctl)
438 * @ioc: per adapter object
439 * @reset_phase: phase
440 *
441 * The handler for doing any required cleanup or initialization.
442 *
443 * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
444 * MPT2_IOC_DONE_RESET
445 */
446 void
447 mpt2sas_ctl_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
448 {
449 int i;
450 u8 issue_reset;
451
452 switch (reset_phase) {
453 case MPT2_IOC_PRE_RESET:
454 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
455 "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
456 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
457 if (!(ioc->diag_buffer_status[i] &
458 MPT2_DIAG_BUFFER_IS_REGISTERED))
459 continue;
460 if ((ioc->diag_buffer_status[i] &
461 MPT2_DIAG_BUFFER_IS_RELEASED))
462 continue;
463 _ctl_send_release(ioc, i, &issue_reset);
464 }
465 break;
466 case MPT2_IOC_AFTER_RESET:
467 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
468 "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
469 if (ioc->ctl_cmds.status & MPT2_CMD_PENDING) {
470 ioc->ctl_cmds.status |= MPT2_CMD_RESET;
471 mpt2sas_base_free_smid(ioc, ioc->ctl_cmds.smid);
472 complete(&ioc->ctl_cmds.done);
473 }
474 break;
475 case MPT2_IOC_DONE_RESET:
476 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
477 "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
478
479 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
480 if (!(ioc->diag_buffer_status[i] &
481 MPT2_DIAG_BUFFER_IS_REGISTERED))
482 continue;
483 if ((ioc->diag_buffer_status[i] &
484 MPT2_DIAG_BUFFER_IS_RELEASED))
485 continue;
486 ioc->diag_buffer_status[i] |=
487 MPT2_DIAG_BUFFER_IS_DIAG_RESET;
488 }
489 break;
490 }
491 }
492
493 /**
494 * _ctl_fasync -
495 * @fd -
496 * @filep -
497 * @mode -
498 *
499 * Called when application request fasyn callback handler.
500 */
501 static int
502 _ctl_fasync(int fd, struct file *filep, int mode)
503 {
504 return fasync_helper(fd, filep, mode, &async_queue);
505 }
506
507 /**
508 * _ctl_release -
509 * @inode -
510 * @filep -
511 *
512 * Called when application releases the fasyn callback handler.
513 */
514 static int
515 _ctl_release(struct inode *inode, struct file *filep)
516 {
517 return fasync_helper(-1, filep, 0, &async_queue);
518 }
519
520 /**
521 * _ctl_poll -
522 * @file -
523 * @wait -
524 *
525 */
526 static unsigned int
527 _ctl_poll(struct file *filep, poll_table *wait)
528 {
529 struct MPT2SAS_ADAPTER *ioc;
530
531 poll_wait(filep, &ctl_poll_wait, wait);
532
533 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
534 if (ioc->aen_event_read_flag)
535 return POLLIN | POLLRDNORM;
536 }
537 return 0;
538 }
539
540 /**
541 * _ctl_set_task_mid - assign an active smid to tm request
542 * @ioc: per adapter object
543 * @karg - (struct mpt2_ioctl_command)
544 * @tm_request - pointer to mf from user space
545 *
546 * Returns 0 when an smid if found, else fail.
547 * during failure, the reply frame is filled.
548 */
549 static int
550 _ctl_set_task_mid(struct MPT2SAS_ADAPTER *ioc, struct mpt2_ioctl_command *karg,
551 Mpi2SCSITaskManagementRequest_t *tm_request)
552 {
553 u8 found = 0;
554 u16 i;
555 u16 handle;
556 struct scsi_cmnd *scmd;
557 struct MPT2SAS_DEVICE *priv_data;
558 unsigned long flags;
559 Mpi2SCSITaskManagementReply_t *tm_reply;
560 u32 sz;
561 u32 lun;
562 char *desc = NULL;
563
564 if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
565 desc = "abort_task";
566 else if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
567 desc = "query_task";
568 else
569 return 0;
570
571 lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN);
572
573 handle = le16_to_cpu(tm_request->DevHandle);
574 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
575 for (i = ioc->scsiio_depth; i && !found; i--) {
576 scmd = ioc->scsi_lookup[i - 1].scmd;
577 if (scmd == NULL || scmd->device == NULL ||
578 scmd->device->hostdata == NULL)
579 continue;
580 if (lun != scmd->device->lun)
581 continue;
582 priv_data = scmd->device->hostdata;
583 if (priv_data->sas_target == NULL)
584 continue;
585 if (priv_data->sas_target->handle != handle)
586 continue;
587 tm_request->TaskMID = cpu_to_le16(ioc->scsi_lookup[i - 1].smid);
588 found = 1;
589 }
590 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
591
592 if (!found) {
593 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
594 "handle(0x%04x), lun(%d), no active mid!!\n", ioc->name,
595 desc, le16_to_cpu(tm_request->DevHandle), lun));
596 tm_reply = ioc->ctl_cmds.reply;
597 tm_reply->DevHandle = tm_request->DevHandle;
598 tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
599 tm_reply->TaskType = tm_request->TaskType;
600 tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4;
601 tm_reply->VP_ID = tm_request->VP_ID;
602 tm_reply->VF_ID = tm_request->VF_ID;
603 sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz);
604 if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply,
605 sz))
606 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
607 __LINE__, __func__);
608 return 1;
609 }
610
611 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
612 "handle(0x%04x), lun(%d), task_mid(%d)\n", ioc->name,
613 desc, le16_to_cpu(tm_request->DevHandle), lun,
614 le16_to_cpu(tm_request->TaskMID)));
615 return 0;
616 }
617
618 /**
619 * _ctl_do_mpt_command - main handler for MPT2COMMAND opcode
620 * @ioc: per adapter object
621 * @karg - (struct mpt2_ioctl_command)
622 * @mf - pointer to mf in user space
623 */
624 static long
625 _ctl_do_mpt_command(struct MPT2SAS_ADAPTER *ioc, struct mpt2_ioctl_command karg,
626 void __user *mf)
627 {
628 MPI2RequestHeader_t *mpi_request = NULL, *request;
629 MPI2DefaultReply_t *mpi_reply;
630 u32 ioc_state;
631 u16 ioc_status;
632 u16 smid;
633 unsigned long timeout, timeleft;
634 u8 issue_reset;
635 u32 sz;
636 void *psge;
637 void *data_out = NULL;
638 dma_addr_t data_out_dma;
639 size_t data_out_sz = 0;
640 void *data_in = NULL;
641 dma_addr_t data_in_dma;
642 size_t data_in_sz = 0;
643 u32 sgl_flags;
644 long ret;
645 u16 wait_state_count;
646
647 issue_reset = 0;
648
649 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
650 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
651 ioc->name, __func__);
652 ret = -EAGAIN;
653 goto out;
654 }
655
656 wait_state_count = 0;
657 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
658 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
659 if (wait_state_count++ == 10) {
660 printk(MPT2SAS_ERR_FMT
661 "%s: failed due to ioc not operational\n",
662 ioc->name, __func__);
663 ret = -EFAULT;
664 goto out;
665 }
666 ssleep(1);
667 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
668 printk(MPT2SAS_INFO_FMT "%s: waiting for "
669 "operational state(count=%d)\n", ioc->name,
670 __func__, wait_state_count);
671 }
672 if (wait_state_count)
673 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
674 ioc->name, __func__);
675
676 mpi_request = kzalloc(ioc->request_sz, GFP_KERNEL);
677 if (!mpi_request) {
678 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a memory for "
679 "mpi_request\n", ioc->name, __func__);
680 ret = -ENOMEM;
681 goto out;
682 }
683
684 /* Check for overflow and wraparound */
685 if (karg.data_sge_offset * 4 > ioc->request_sz ||
686 karg.data_sge_offset > (UINT_MAX / 4)) {
687 ret = -EINVAL;
688 goto out;
689 }
690
691 /* copy in request message frame from user */
692 if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) {
693 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__,
694 __func__);
695 ret = -EFAULT;
696 goto out;
697 }
698
699 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
700 smid = mpt2sas_base_get_smid_hpr(ioc, ioc->ctl_cb_idx);
701 if (!smid) {
702 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
703 ioc->name, __func__);
704 ret = -EAGAIN;
705 goto out;
706 }
707 } else {
708
709 smid = mpt2sas_base_get_smid_scsiio(ioc, ioc->ctl_cb_idx, NULL);
710 if (!smid) {
711 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
712 ioc->name, __func__);
713 ret = -EAGAIN;
714 goto out;
715 }
716 }
717
718 ret = 0;
719 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
720 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
721 request = mpt2sas_base_get_msg_frame(ioc, smid);
722 memcpy(request, mpi_request, karg.data_sge_offset*4);
723 ioc->ctl_cmds.smid = smid;
724 data_out_sz = karg.data_out_size;
725 data_in_sz = karg.data_in_size;
726
727 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
728 mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
729 if (!le16_to_cpu(mpi_request->FunctionDependent1) ||
730 le16_to_cpu(mpi_request->FunctionDependent1) >
731 ioc->facts.MaxDevHandle) {
732 ret = -EINVAL;
733 mpt2sas_base_free_smid(ioc, smid);
734 goto out;
735 }
736 }
737
738 /* obtain dma-able memory for data transfer */
739 if (data_out_sz) /* WRITE */ {
740 data_out = pci_alloc_consistent(ioc->pdev, data_out_sz,
741 &data_out_dma);
742 if (!data_out) {
743 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
744 __LINE__, __func__);
745 ret = -ENOMEM;
746 mpt2sas_base_free_smid(ioc, smid);
747 goto out;
748 }
749 if (copy_from_user(data_out, karg.data_out_buf_ptr,
750 data_out_sz)) {
751 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
752 __LINE__, __func__);
753 ret = -EFAULT;
754 mpt2sas_base_free_smid(ioc, smid);
755 goto out;
756 }
757 }
758
759 if (data_in_sz) /* READ */ {
760 data_in = pci_alloc_consistent(ioc->pdev, data_in_sz,
761 &data_in_dma);
762 if (!data_in) {
763 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
764 __LINE__, __func__);
765 ret = -ENOMEM;
766 mpt2sas_base_free_smid(ioc, smid);
767 goto out;
768 }
769 }
770
771 /* add scatter gather elements */
772 psge = (void *)request + (karg.data_sge_offset*4);
773
774 if (!data_out_sz && !data_in_sz) {
775 mpt2sas_base_build_zero_len_sge(ioc, psge);
776 } else if (data_out_sz && data_in_sz) {
777 /* WRITE sgel first */
778 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
779 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
780 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
781 ioc->base_add_sg_single(psge, sgl_flags |
782 data_out_sz, data_out_dma);
783
784 /* incr sgel */
785 psge += ioc->sge_size;
786
787 /* READ sgel last */
788 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
789 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
790 MPI2_SGE_FLAGS_END_OF_LIST);
791 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
792 ioc->base_add_sg_single(psge, sgl_flags |
793 data_in_sz, data_in_dma);
794 } else if (data_out_sz) /* WRITE */ {
795 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
796 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
797 MPI2_SGE_FLAGS_END_OF_LIST | MPI2_SGE_FLAGS_HOST_TO_IOC);
798 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
799 ioc->base_add_sg_single(psge, sgl_flags |
800 data_out_sz, data_out_dma);
801 } else if (data_in_sz) /* READ */ {
802 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
803 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
804 MPI2_SGE_FLAGS_END_OF_LIST);
805 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
806 ioc->base_add_sg_single(psge, sgl_flags |
807 data_in_sz, data_in_dma);
808 }
809
810 /* send command to firmware */
811 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
812 _ctl_display_some_debug(ioc, smid, "ctl_request", NULL);
813 #endif
814
815 init_completion(&ioc->ctl_cmds.done);
816 switch (mpi_request->Function) {
817 case MPI2_FUNCTION_SCSI_IO_REQUEST:
818 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
819 {
820 Mpi2SCSIIORequest_t *scsiio_request =
821 (Mpi2SCSIIORequest_t *)request;
822 scsiio_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
823 scsiio_request->SenseBufferLowAddress =
824 mpt2sas_base_get_sense_buffer_dma(ioc, smid);
825 memset(ioc->ctl_cmds.sense, 0, SCSI_SENSE_BUFFERSIZE);
826 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)
827 mpt2sas_base_put_smid_scsi_io(ioc, smid,
828 le16_to_cpu(mpi_request->FunctionDependent1));
829 else
830 mpt2sas_base_put_smid_default(ioc, smid);
831 break;
832 }
833 case MPI2_FUNCTION_SCSI_TASK_MGMT:
834 {
835 Mpi2SCSITaskManagementRequest_t *tm_request =
836 (Mpi2SCSITaskManagementRequest_t *)request;
837
838 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "TASK_MGMT: "
839 "handle(0x%04x), task_type(0x%02x)\n", ioc->name,
840 le16_to_cpu(tm_request->DevHandle), tm_request->TaskType));
841
842 if (tm_request->TaskType ==
843 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK ||
844 tm_request->TaskType ==
845 MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) {
846 if (_ctl_set_task_mid(ioc, &karg, tm_request)) {
847 mpt2sas_base_free_smid(ioc, smid);
848 goto out;
849 }
850 }
851
852 mpt2sas_scsih_set_tm_flag(ioc, le16_to_cpu(
853 tm_request->DevHandle));
854 mpt2sas_base_put_smid_hi_priority(ioc, smid);
855 break;
856 }
857 case MPI2_FUNCTION_SMP_PASSTHROUGH:
858 {
859 Mpi2SmpPassthroughRequest_t *smp_request =
860 (Mpi2SmpPassthroughRequest_t *)mpi_request;
861 u8 *data;
862
863 /* ioc determines which port to use */
864 smp_request->PhysicalPort = 0xFF;
865 if (smp_request->PassthroughFlags &
866 MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE)
867 data = (u8 *)&smp_request->SGL;
868 else {
869 if (unlikely(data_out == NULL)) {
870 printk(KERN_ERR "failure at %s:%d/%s()!\n",
871 __FILE__, __LINE__, __func__);
872 mpt2sas_base_free_smid(ioc, smid);
873 ret = -EINVAL;
874 goto out;
875 }
876 data = data_out;
877 }
878
879 if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) {
880 ioc->ioc_link_reset_in_progress = 1;
881 ioc->ignore_loginfos = 1;
882 }
883 mpt2sas_base_put_smid_default(ioc, smid);
884 break;
885 }
886 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
887 {
888 Mpi2SasIoUnitControlRequest_t *sasiounit_request =
889 (Mpi2SasIoUnitControlRequest_t *)mpi_request;
890
891 if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET
892 || sasiounit_request->Operation ==
893 MPI2_SAS_OP_PHY_LINK_RESET) {
894 ioc->ioc_link_reset_in_progress = 1;
895 ioc->ignore_loginfos = 1;
896 }
897 mpt2sas_base_put_smid_default(ioc, smid);
898 break;
899 }
900 default:
901 mpt2sas_base_put_smid_default(ioc, smid);
902 break;
903 }
904
905 if (karg.timeout < MPT2_IOCTL_DEFAULT_TIMEOUT)
906 timeout = MPT2_IOCTL_DEFAULT_TIMEOUT;
907 else
908 timeout = karg.timeout;
909 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
910 timeout*HZ);
911 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
912 Mpi2SCSITaskManagementRequest_t *tm_request =
913 (Mpi2SCSITaskManagementRequest_t *)mpi_request;
914 mpt2sas_scsih_clear_tm_flag(ioc, le16_to_cpu(
915 tm_request->DevHandle));
916 } else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH ||
917 mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) &&
918 ioc->ioc_link_reset_in_progress) {
919 ioc->ioc_link_reset_in_progress = 0;
920 ioc->ignore_loginfos = 0;
921 }
922 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
923 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
924 __func__);
925 _debug_dump_mf(mpi_request, karg.data_sge_offset);
926 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
927 issue_reset = 1;
928 goto issue_host_reset;
929 }
930
931 mpi_reply = ioc->ctl_cmds.reply;
932 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
933
934 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
935 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT &&
936 (ioc->logging_level & MPT_DEBUG_TM)) {
937 Mpi2SCSITaskManagementReply_t *tm_reply =
938 (Mpi2SCSITaskManagementReply_t *)mpi_reply;
939
940 printk(MPT2SAS_INFO_FMT "TASK_MGMT: "
941 "IOCStatus(0x%04x), IOCLogInfo(0x%08x), "
942 "TerminationCount(0x%08x)\n", ioc->name,
943 le16_to_cpu(tm_reply->IOCStatus),
944 le32_to_cpu(tm_reply->IOCLogInfo),
945 le32_to_cpu(tm_reply->TerminationCount));
946 }
947 #endif
948 /* copy out xdata to user */
949 if (data_in_sz) {
950 if (copy_to_user(karg.data_in_buf_ptr, data_in,
951 data_in_sz)) {
952 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
953 __LINE__, __func__);
954 ret = -ENODATA;
955 goto out;
956 }
957 }
958
959 /* copy out reply message frame to user */
960 if (karg.max_reply_bytes) {
961 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
962 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
963 sz)) {
964 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
965 __LINE__, __func__);
966 ret = -ENODATA;
967 goto out;
968 }
969 }
970
971 /* copy out sense to user */
972 if (karg.max_sense_bytes && (mpi_request->Function ==
973 MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
974 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
975 sz = min_t(u32, karg.max_sense_bytes, SCSI_SENSE_BUFFERSIZE);
976 if (copy_to_user(karg.sense_data_ptr,
977 ioc->ctl_cmds.sense, sz)) {
978 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
979 __LINE__, __func__);
980 ret = -ENODATA;
981 goto out;
982 }
983 }
984
985 issue_host_reset:
986 if (issue_reset) {
987 ret = -ENODATA;
988 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
989 mpi_request->Function ==
990 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
991 mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH)) {
992 printk(MPT2SAS_INFO_FMT "issue target reset: handle "
993 "= (0x%04x)\n", ioc->name,
994 le16_to_cpu(mpi_request->FunctionDependent1));
995 mpt2sas_halt_firmware(ioc);
996 mpt2sas_scsih_issue_tm(ioc,
997 le16_to_cpu(mpi_request->FunctionDependent1), 0, 0,
998 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 10,
999 0, TM_MUTEX_ON);
1000 ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
1001 } else
1002 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1003 FORCE_BIG_HAMMER);
1004 }
1005
1006 out:
1007
1008 /* free memory associated with sg buffers */
1009 if (data_in)
1010 pci_free_consistent(ioc->pdev, data_in_sz, data_in,
1011 data_in_dma);
1012
1013 if (data_out)
1014 pci_free_consistent(ioc->pdev, data_out_sz, data_out,
1015 data_out_dma);
1016
1017 kfree(mpi_request);
1018 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1019 return ret;
1020 }
1021
1022 /**
1023 * _ctl_getiocinfo - main handler for MPT2IOCINFO opcode
1024 * @ioc: per adapter object
1025 * @arg - user space buffer containing ioctl content
1026 */
1027 static long
1028 _ctl_getiocinfo(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1029 {
1030 struct mpt2_ioctl_iocinfo karg;
1031
1032 if (copy_from_user(&karg, arg, sizeof(karg))) {
1033 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1034 __FILE__, __LINE__, __func__);
1035 return -EFAULT;
1036 }
1037
1038 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1039 __func__));
1040
1041 memset(&karg, 0 , sizeof(karg));
1042 if (ioc->is_warpdrive)
1043 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2_SSS6200;
1044 else
1045 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
1046 if (ioc->pfacts)
1047 karg.port_number = ioc->pfacts[0].PortNumber;
1048 karg.hw_rev = ioc->pdev->revision;
1049 karg.pci_id = ioc->pdev->device;
1050 karg.subsystem_device = ioc->pdev->subsystem_device;
1051 karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
1052 karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
1053 karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
1054 karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
1055 karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
1056 karg.firmware_version = ioc->facts.FWVersion.Word;
1057 strcpy(karg.driver_version, MPT2SAS_DRIVER_NAME);
1058 strcat(karg.driver_version, "-");
1059 strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
1060 karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
1061
1062 if (copy_to_user(arg, &karg, sizeof(karg))) {
1063 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1064 __FILE__, __LINE__, __func__);
1065 return -EFAULT;
1066 }
1067 return 0;
1068 }
1069
1070 /**
1071 * _ctl_eventquery - main handler for MPT2EVENTQUERY opcode
1072 * @ioc: per adapter object
1073 * @arg - user space buffer containing ioctl content
1074 */
1075 static long
1076 _ctl_eventquery(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1077 {
1078 struct mpt2_ioctl_eventquery karg;
1079
1080 if (copy_from_user(&karg, arg, sizeof(karg))) {
1081 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1082 __FILE__, __LINE__, __func__);
1083 return -EFAULT;
1084 }
1085
1086 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1087 __func__));
1088
1089 karg.event_entries = MPT2SAS_CTL_EVENT_LOG_SIZE;
1090 memcpy(karg.event_types, ioc->event_type,
1091 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1092
1093 if (copy_to_user(arg, &karg, sizeof(karg))) {
1094 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1095 __FILE__, __LINE__, __func__);
1096 return -EFAULT;
1097 }
1098 return 0;
1099 }
1100
1101 /**
1102 * _ctl_eventenable - main handler for MPT2EVENTENABLE opcode
1103 * @ioc: per adapter object
1104 * @arg - user space buffer containing ioctl content
1105 */
1106 static long
1107 _ctl_eventenable(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1108 {
1109 struct mpt2_ioctl_eventenable karg;
1110
1111 if (copy_from_user(&karg, arg, sizeof(karg))) {
1112 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1113 __FILE__, __LINE__, __func__);
1114 return -EFAULT;
1115 }
1116
1117 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1118 __func__));
1119
1120 if (ioc->event_log)
1121 return 0;
1122 memcpy(ioc->event_type, karg.event_types,
1123 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1124 mpt2sas_base_validate_event_type(ioc, ioc->event_type);
1125
1126 /* initialize event_log */
1127 ioc->event_context = 0;
1128 ioc->aen_event_read_flag = 0;
1129 ioc->event_log = kcalloc(MPT2SAS_CTL_EVENT_LOG_SIZE,
1130 sizeof(struct MPT2_IOCTL_EVENTS), GFP_KERNEL);
1131 if (!ioc->event_log) {
1132 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1133 __FILE__, __LINE__, __func__);
1134 return -ENOMEM;
1135 }
1136 return 0;
1137 }
1138
1139 /**
1140 * _ctl_eventreport - main handler for MPT2EVENTREPORT opcode
1141 * @ioc: per adapter object
1142 * @arg - user space buffer containing ioctl content
1143 */
1144 static long
1145 _ctl_eventreport(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1146 {
1147 struct mpt2_ioctl_eventreport karg;
1148 u32 number_bytes, max_events, max;
1149 struct mpt2_ioctl_eventreport __user *uarg = arg;
1150
1151 if (copy_from_user(&karg, arg, sizeof(karg))) {
1152 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1153 __FILE__, __LINE__, __func__);
1154 return -EFAULT;
1155 }
1156
1157 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1158 __func__));
1159
1160 number_bytes = karg.hdr.max_data_size -
1161 sizeof(struct mpt2_ioctl_header);
1162 max_events = number_bytes/sizeof(struct MPT2_IOCTL_EVENTS);
1163 max = min_t(u32, MPT2SAS_CTL_EVENT_LOG_SIZE, max_events);
1164
1165 /* If fewer than 1 event is requested, there must have
1166 * been some type of error.
1167 */
1168 if (!max || !ioc->event_log)
1169 return -ENODATA;
1170
1171 number_bytes = max * sizeof(struct MPT2_IOCTL_EVENTS);
1172 if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
1173 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1174 __FILE__, __LINE__, __func__);
1175 return -EFAULT;
1176 }
1177
1178 /* reset flag so SIGIO can restart */
1179 ioc->aen_event_read_flag = 0;
1180 return 0;
1181 }
1182
1183 /**
1184 * _ctl_do_reset - main handler for MPT2HARDRESET opcode
1185 * @ioc: per adapter object
1186 * @arg - user space buffer containing ioctl content
1187 */
1188 static long
1189 _ctl_do_reset(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1190 {
1191 struct mpt2_ioctl_diag_reset karg;
1192 int retval;
1193
1194 if (copy_from_user(&karg, arg, sizeof(karg))) {
1195 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1196 __FILE__, __LINE__, __func__);
1197 return -EFAULT;
1198 }
1199
1200 if (ioc->shost_recovery || ioc->pci_error_recovery ||
1201 ioc->is_driver_loading)
1202 return -EAGAIN;
1203 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1204 __func__));
1205
1206 retval = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1207 FORCE_BIG_HAMMER);
1208 printk(MPT2SAS_INFO_FMT "host reset: %s\n",
1209 ioc->name, ((!retval) ? "SUCCESS" : "FAILED"));
1210 return 0;
1211 }
1212
1213 /**
1214 * _ctl_btdh_search_sas_device - searching for sas device
1215 * @ioc: per adapter object
1216 * @btdh: btdh ioctl payload
1217 */
1218 static int
1219 _ctl_btdh_search_sas_device(struct MPT2SAS_ADAPTER *ioc,
1220 struct mpt2_ioctl_btdh_mapping *btdh)
1221 {
1222 struct _sas_device *sas_device;
1223 unsigned long flags;
1224 int rc = 0;
1225
1226 if (list_empty(&ioc->sas_device_list))
1227 return rc;
1228
1229 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1230 list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
1231 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1232 btdh->handle == sas_device->handle) {
1233 btdh->bus = sas_device->channel;
1234 btdh->id = sas_device->id;
1235 rc = 1;
1236 goto out;
1237 } else if (btdh->bus == sas_device->channel && btdh->id ==
1238 sas_device->id && btdh->handle == 0xFFFF) {
1239 btdh->handle = sas_device->handle;
1240 rc = 1;
1241 goto out;
1242 }
1243 }
1244 out:
1245 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1246 return rc;
1247 }
1248
1249 /**
1250 * _ctl_btdh_search_raid_device - searching for raid device
1251 * @ioc: per adapter object
1252 * @btdh: btdh ioctl payload
1253 */
1254 static int
1255 _ctl_btdh_search_raid_device(struct MPT2SAS_ADAPTER *ioc,
1256 struct mpt2_ioctl_btdh_mapping *btdh)
1257 {
1258 struct _raid_device *raid_device;
1259 unsigned long flags;
1260 int rc = 0;
1261
1262 if (list_empty(&ioc->raid_device_list))
1263 return rc;
1264
1265 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1266 list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
1267 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1268 btdh->handle == raid_device->handle) {
1269 btdh->bus = raid_device->channel;
1270 btdh->id = raid_device->id;
1271 rc = 1;
1272 goto out;
1273 } else if (btdh->bus == raid_device->channel && btdh->id ==
1274 raid_device->id && btdh->handle == 0xFFFF) {
1275 btdh->handle = raid_device->handle;
1276 rc = 1;
1277 goto out;
1278 }
1279 }
1280 out:
1281 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1282 return rc;
1283 }
1284
1285 /**
1286 * _ctl_btdh_mapping - main handler for MPT2BTDHMAPPING opcode
1287 * @ioc: per adapter object
1288 * @arg - user space buffer containing ioctl content
1289 */
1290 static long
1291 _ctl_btdh_mapping(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1292 {
1293 struct mpt2_ioctl_btdh_mapping karg;
1294 int rc;
1295
1296 if (copy_from_user(&karg, arg, sizeof(karg))) {
1297 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1298 __FILE__, __LINE__, __func__);
1299 return -EFAULT;
1300 }
1301
1302 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1303 __func__));
1304
1305 rc = _ctl_btdh_search_sas_device(ioc, &karg);
1306 if (!rc)
1307 _ctl_btdh_search_raid_device(ioc, &karg);
1308
1309 if (copy_to_user(arg, &karg, sizeof(karg))) {
1310 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1311 __FILE__, __LINE__, __func__);
1312 return -EFAULT;
1313 }
1314 return 0;
1315 }
1316
1317 /**
1318 * _ctl_diag_capability - return diag buffer capability
1319 * @ioc: per adapter object
1320 * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
1321 *
1322 * returns 1 when diag buffer support is enabled in firmware
1323 */
1324 static u8
1325 _ctl_diag_capability(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type)
1326 {
1327 u8 rc = 0;
1328
1329 switch (buffer_type) {
1330 case MPI2_DIAG_BUF_TYPE_TRACE:
1331 if (ioc->facts.IOCCapabilities &
1332 MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
1333 rc = 1;
1334 break;
1335 case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
1336 if (ioc->facts.IOCCapabilities &
1337 MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
1338 rc = 1;
1339 break;
1340 case MPI2_DIAG_BUF_TYPE_EXTENDED:
1341 if (ioc->facts.IOCCapabilities &
1342 MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER)
1343 rc = 1;
1344 }
1345
1346 return rc;
1347 }
1348
1349 /**
1350 * _ctl_diag_register_2 - wrapper for registering diag buffer support
1351 * @ioc: per adapter object
1352 * @diag_register: the diag_register struct passed in from user space
1353 *
1354 */
1355 static long
1356 _ctl_diag_register_2(struct MPT2SAS_ADAPTER *ioc,
1357 struct mpt2_diag_register *diag_register)
1358 {
1359 int rc, i;
1360 void *request_data = NULL;
1361 dma_addr_t request_data_dma;
1362 u32 request_data_sz = 0;
1363 Mpi2DiagBufferPostRequest_t *mpi_request;
1364 Mpi2DiagBufferPostReply_t *mpi_reply;
1365 u8 buffer_type;
1366 unsigned long timeleft;
1367 u16 smid;
1368 u16 ioc_status;
1369 u8 issue_reset = 0;
1370
1371 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1372 __func__));
1373
1374 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1375 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1376 ioc->name, __func__);
1377 rc = -EAGAIN;
1378 goto out;
1379 }
1380
1381 buffer_type = diag_register->buffer_type;
1382 if (!_ctl_diag_capability(ioc, buffer_type)) {
1383 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1384 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1385 return -EPERM;
1386 }
1387
1388 if (ioc->diag_buffer_status[buffer_type] &
1389 MPT2_DIAG_BUFFER_IS_REGISTERED) {
1390 printk(MPT2SAS_ERR_FMT "%s: already has a registered "
1391 "buffer for buffer_type(0x%02x)\n", ioc->name, __func__,
1392 buffer_type);
1393 return -EINVAL;
1394 }
1395
1396 if (diag_register->requested_buffer_size % 4) {
1397 printk(MPT2SAS_ERR_FMT "%s: the requested_buffer_size "
1398 "is not 4 byte aligned\n", ioc->name, __func__);
1399 return -EINVAL;
1400 }
1401
1402 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1403 if (!smid) {
1404 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1405 ioc->name, __func__);
1406 rc = -EAGAIN;
1407 goto out;
1408 }
1409
1410 rc = 0;
1411 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1412 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1413 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1414 ioc->ctl_cmds.smid = smid;
1415
1416 request_data = ioc->diag_buffer[buffer_type];
1417 request_data_sz = diag_register->requested_buffer_size;
1418 ioc->unique_id[buffer_type] = diag_register->unique_id;
1419 ioc->diag_buffer_status[buffer_type] = 0;
1420 memcpy(ioc->product_specific[buffer_type],
1421 diag_register->product_specific, MPT2_PRODUCT_SPECIFIC_DWORDS);
1422 ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags;
1423
1424 if (request_data) {
1425 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1426 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
1427 pci_free_consistent(ioc->pdev,
1428 ioc->diag_buffer_sz[buffer_type],
1429 request_data, request_data_dma);
1430 request_data = NULL;
1431 }
1432 }
1433
1434 if (request_data == NULL) {
1435 ioc->diag_buffer_sz[buffer_type] = 0;
1436 ioc->diag_buffer_dma[buffer_type] = 0;
1437 request_data = pci_alloc_consistent(
1438 ioc->pdev, request_data_sz, &request_data_dma);
1439 if (request_data == NULL) {
1440 printk(MPT2SAS_ERR_FMT "%s: failed allocating memory"
1441 " for diag buffers, requested size(%d)\n",
1442 ioc->name, __func__, request_data_sz);
1443 mpt2sas_base_free_smid(ioc, smid);
1444 return -ENOMEM;
1445 }
1446 ioc->diag_buffer[buffer_type] = request_data;
1447 ioc->diag_buffer_sz[buffer_type] = request_data_sz;
1448 ioc->diag_buffer_dma[buffer_type] = request_data_dma;
1449 }
1450
1451 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1452 mpi_request->BufferType = diag_register->buffer_type;
1453 mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags);
1454 mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
1455 mpi_request->BufferLength = cpu_to_le32(request_data_sz);
1456 mpi_request->VF_ID = 0; /* TODO */
1457 mpi_request->VP_ID = 0;
1458
1459 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: diag_buffer(0x%p), "
1460 "dma(0x%llx), sz(%d)\n", ioc->name, __func__, request_data,
1461 (unsigned long long)request_data_dma,
1462 le32_to_cpu(mpi_request->BufferLength)));
1463
1464 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1465 mpi_request->ProductSpecific[i] =
1466 cpu_to_le32(ioc->product_specific[buffer_type][i]);
1467
1468 init_completion(&ioc->ctl_cmds.done);
1469 mpt2sas_base_put_smid_default(ioc, smid);
1470 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1471 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1472
1473 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1474 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1475 __func__);
1476 _debug_dump_mf(mpi_request,
1477 sizeof(Mpi2DiagBufferPostRequest_t)/4);
1478 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1479 issue_reset = 1;
1480 goto issue_host_reset;
1481 }
1482
1483 /* process the completed Reply Message Frame */
1484 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1485 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1486 ioc->name, __func__);
1487 rc = -EFAULT;
1488 goto out;
1489 }
1490
1491 mpi_reply = ioc->ctl_cmds.reply;
1492 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1493
1494 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1495 ioc->diag_buffer_status[buffer_type] |=
1496 MPT2_DIAG_BUFFER_IS_REGISTERED;
1497 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
1498 ioc->name, __func__));
1499 } else {
1500 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
1501 "log_info(0x%08x)\n", ioc->name, __func__,
1502 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1503 rc = -EFAULT;
1504 }
1505
1506 issue_host_reset:
1507 if (issue_reset)
1508 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1509 FORCE_BIG_HAMMER);
1510
1511 out:
1512
1513 if (rc && request_data)
1514 pci_free_consistent(ioc->pdev, request_data_sz,
1515 request_data, request_data_dma);
1516
1517 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1518 return rc;
1519 }
1520
1521 /**
1522 * mpt2sas_enable_diag_buffer - enabling diag_buffers support driver load time
1523 * @ioc: per adapter object
1524 * @bits_to_register: bitwise field where trace is bit 0, and snapshot is bit 1
1525 *
1526 * This is called when command line option diag_buffer_enable is enabled
1527 * at driver load time.
1528 */
1529 void
1530 mpt2sas_enable_diag_buffer(struct MPT2SAS_ADAPTER *ioc, u8 bits_to_register)
1531 {
1532 struct mpt2_diag_register diag_register;
1533
1534 memset(&diag_register, 0, sizeof(struct mpt2_diag_register));
1535
1536 if (bits_to_register & 1) {
1537 printk(MPT2SAS_INFO_FMT "registering trace buffer support\n",
1538 ioc->name);
1539 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
1540 /* register for 1MB buffers */
1541 diag_register.requested_buffer_size = (1024 * 1024);
1542 diag_register.unique_id = 0x7075900;
1543 _ctl_diag_register_2(ioc, &diag_register);
1544 }
1545
1546 if (bits_to_register & 2) {
1547 printk(MPT2SAS_INFO_FMT "registering snapshot buffer support\n",
1548 ioc->name);
1549 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT;
1550 /* register for 2MB buffers */
1551 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1552 diag_register.unique_id = 0x7075901;
1553 _ctl_diag_register_2(ioc, &diag_register);
1554 }
1555
1556 if (bits_to_register & 4) {
1557 printk(MPT2SAS_INFO_FMT "registering extended buffer support\n",
1558 ioc->name);
1559 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_EXTENDED;
1560 /* register for 2MB buffers */
1561 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1562 diag_register.unique_id = 0x7075901;
1563 _ctl_diag_register_2(ioc, &diag_register);
1564 }
1565 }
1566
1567 /**
1568 * _ctl_diag_register - application register with driver
1569 * @ioc: per adapter object
1570 * @arg - user space buffer containing ioctl content
1571 *
1572 * This will allow the driver to setup any required buffers that will be
1573 * needed by firmware to communicate with the driver.
1574 */
1575 static long
1576 _ctl_diag_register(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1577 {
1578 struct mpt2_diag_register karg;
1579 long rc;
1580
1581 if (copy_from_user(&karg, arg, sizeof(karg))) {
1582 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1583 __FILE__, __LINE__, __func__);
1584 return -EFAULT;
1585 }
1586
1587 rc = _ctl_diag_register_2(ioc, &karg);
1588 return rc;
1589 }
1590
1591 /**
1592 * _ctl_diag_unregister - application unregister with driver
1593 * @ioc: per adapter object
1594 * @arg - user space buffer containing ioctl content
1595 *
1596 * This will allow the driver to cleanup any memory allocated for diag
1597 * messages and to free up any resources.
1598 */
1599 static long
1600 _ctl_diag_unregister(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1601 {
1602 struct mpt2_diag_unregister karg;
1603 void *request_data;
1604 dma_addr_t request_data_dma;
1605 u32 request_data_sz;
1606 u8 buffer_type;
1607
1608 if (copy_from_user(&karg, arg, sizeof(karg))) {
1609 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1610 __FILE__, __LINE__, __func__);
1611 return -EFAULT;
1612 }
1613
1614 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1615 __func__));
1616
1617 buffer_type = karg.unique_id & 0x000000ff;
1618 if (!_ctl_diag_capability(ioc, buffer_type)) {
1619 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1620 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1621 return -EPERM;
1622 }
1623
1624 if ((ioc->diag_buffer_status[buffer_type] &
1625 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1626 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1627 "registered\n", ioc->name, __func__, buffer_type);
1628 return -EINVAL;
1629 }
1630 if ((ioc->diag_buffer_status[buffer_type] &
1631 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
1632 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) has not been "
1633 "released\n", ioc->name, __func__, buffer_type);
1634 return -EINVAL;
1635 }
1636
1637 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1638 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1639 "registered\n", ioc->name, __func__, karg.unique_id);
1640 return -EINVAL;
1641 }
1642
1643 request_data = ioc->diag_buffer[buffer_type];
1644 if (!request_data) {
1645 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1646 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1647 return -ENOMEM;
1648 }
1649
1650 request_data_sz = ioc->diag_buffer_sz[buffer_type];
1651 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1652 pci_free_consistent(ioc->pdev, request_data_sz,
1653 request_data, request_data_dma);
1654 ioc->diag_buffer[buffer_type] = NULL;
1655 ioc->diag_buffer_status[buffer_type] = 0;
1656 return 0;
1657 }
1658
1659 /**
1660 * _ctl_diag_query - query relevant info associated with diag buffers
1661 * @ioc: per adapter object
1662 * @arg - user space buffer containing ioctl content
1663 *
1664 * The application will send only buffer_type and unique_id. Driver will
1665 * inspect unique_id first, if valid, fill in all the info. If unique_id is
1666 * 0x00, the driver will return info specified by Buffer Type.
1667 */
1668 static long
1669 _ctl_diag_query(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1670 {
1671 struct mpt2_diag_query karg;
1672 void *request_data;
1673 int i;
1674 u8 buffer_type;
1675
1676 if (copy_from_user(&karg, arg, sizeof(karg))) {
1677 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1678 __FILE__, __LINE__, __func__);
1679 return -EFAULT;
1680 }
1681
1682 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1683 __func__));
1684
1685 karg.application_flags = 0;
1686 buffer_type = karg.buffer_type;
1687
1688 if (!_ctl_diag_capability(ioc, buffer_type)) {
1689 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1690 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1691 return -EPERM;
1692 }
1693
1694 if ((ioc->diag_buffer_status[buffer_type] &
1695 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1696 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1697 "registered\n", ioc->name, __func__, buffer_type);
1698 return -EINVAL;
1699 }
1700
1701 if (karg.unique_id & 0xffffff00) {
1702 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1703 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1704 "registered\n", ioc->name, __func__,
1705 karg.unique_id);
1706 return -EINVAL;
1707 }
1708 }
1709
1710 request_data = ioc->diag_buffer[buffer_type];
1711 if (!request_data) {
1712 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1713 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1714 return -ENOMEM;
1715 }
1716
1717 if (ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_RELEASED)
1718 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1719 MPT2_APP_FLAGS_BUFFER_VALID);
1720 else
1721 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1722 MPT2_APP_FLAGS_BUFFER_VALID |
1723 MPT2_APP_FLAGS_FW_BUFFER_ACCESS);
1724
1725 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1726 karg.product_specific[i] =
1727 ioc->product_specific[buffer_type][i];
1728
1729 karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
1730 karg.driver_added_buffer_size = 0;
1731 karg.unique_id = ioc->unique_id[buffer_type];
1732 karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];
1733
1734 if (copy_to_user(arg, &karg, sizeof(struct mpt2_diag_query))) {
1735 printk(MPT2SAS_ERR_FMT "%s: unable to write mpt2_diag_query "
1736 "data @ %p\n", ioc->name, __func__, arg);
1737 return -EFAULT;
1738 }
1739 return 0;
1740 }
1741
1742 /**
1743 * _ctl_send_release - Diag Release Message
1744 * @ioc: per adapter object
1745 * @buffer_type - specifies either TRACE, SNAPSHOT, or EXTENDED
1746 * @issue_reset - specifies whether host reset is required.
1747 *
1748 */
1749 static int
1750 _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type, u8 *issue_reset)
1751 {
1752 Mpi2DiagReleaseRequest_t *mpi_request;
1753 Mpi2DiagReleaseReply_t *mpi_reply;
1754 u16 smid;
1755 u16 ioc_status;
1756 u32 ioc_state;
1757 int rc;
1758 unsigned long timeleft;
1759
1760 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1761 __func__));
1762
1763 rc = 0;
1764 *issue_reset = 0;
1765
1766 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1767 if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1768 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
1769 "skipping due to FAULT state\n", ioc->name,
1770 __func__));
1771 rc = -EAGAIN;
1772 goto out;
1773 }
1774
1775 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1776 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1777 ioc->name, __func__);
1778 rc = -EAGAIN;
1779 goto out;
1780 }
1781
1782 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1783 if (!smid) {
1784 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1785 ioc->name, __func__);
1786 rc = -EAGAIN;
1787 goto out;
1788 }
1789
1790 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1791 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1792 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1793 ioc->ctl_cmds.smid = smid;
1794
1795 mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
1796 mpi_request->BufferType = buffer_type;
1797 mpi_request->VF_ID = 0; /* TODO */
1798 mpi_request->VP_ID = 0;
1799
1800 init_completion(&ioc->ctl_cmds.done);
1801 mpt2sas_base_put_smid_default(ioc, smid);
1802 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1803 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1804
1805 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1806 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1807 __func__);
1808 _debug_dump_mf(mpi_request,
1809 sizeof(Mpi2DiagReleaseRequest_t)/4);
1810 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1811 *issue_reset = 1;
1812 rc = -EFAULT;
1813 goto out;
1814 }
1815
1816 /* process the completed Reply Message Frame */
1817 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1818 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1819 ioc->name, __func__);
1820 rc = -EFAULT;
1821 goto out;
1822 }
1823
1824 mpi_reply = ioc->ctl_cmds.reply;
1825 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1826
1827 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1828 ioc->diag_buffer_status[buffer_type] |=
1829 MPT2_DIAG_BUFFER_IS_RELEASED;
1830 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
1831 ioc->name, __func__));
1832 } else {
1833 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
1834 "log_info(0x%08x)\n", ioc->name, __func__,
1835 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1836 rc = -EFAULT;
1837 }
1838
1839 out:
1840 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1841 return rc;
1842 }
1843
1844 /**
1845 * _ctl_diag_release - request to send Diag Release Message to firmware
1846 * @arg - user space buffer containing ioctl content
1847 *
1848 * This allows ownership of the specified buffer to returned to the driver,
1849 * allowing an application to read the buffer without fear that firmware is
1850 * overwritting information in the buffer.
1851 */
1852 static long
1853 _ctl_diag_release(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1854 {
1855 struct mpt2_diag_release karg;
1856 void *request_data;
1857 int rc;
1858 u8 buffer_type;
1859 u8 issue_reset = 0;
1860
1861 if (copy_from_user(&karg, arg, sizeof(karg))) {
1862 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1863 __FILE__, __LINE__, __func__);
1864 return -EFAULT;
1865 }
1866
1867 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1868 __func__));
1869
1870 buffer_type = karg.unique_id & 0x000000ff;
1871 if (!_ctl_diag_capability(ioc, buffer_type)) {
1872 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1873 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1874 return -EPERM;
1875 }
1876
1877 if ((ioc->diag_buffer_status[buffer_type] &
1878 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1879 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1880 "registered\n", ioc->name, __func__, buffer_type);
1881 return -EINVAL;
1882 }
1883
1884 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1885 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1886 "registered\n", ioc->name, __func__, karg.unique_id);
1887 return -EINVAL;
1888 }
1889
1890 if (ioc->diag_buffer_status[buffer_type] &
1891 MPT2_DIAG_BUFFER_IS_RELEASED) {
1892 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1893 "is already released\n", ioc->name, __func__,
1894 buffer_type);
1895 return 0;
1896 }
1897
1898 request_data = ioc->diag_buffer[buffer_type];
1899
1900 if (!request_data) {
1901 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1902 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1903 return -ENOMEM;
1904 }
1905
1906 /* buffers were released by due to host reset */
1907 if ((ioc->diag_buffer_status[buffer_type] &
1908 MPT2_DIAG_BUFFER_IS_DIAG_RESET)) {
1909 ioc->diag_buffer_status[buffer_type] |=
1910 MPT2_DIAG_BUFFER_IS_RELEASED;
1911 ioc->diag_buffer_status[buffer_type] &=
1912 ~MPT2_DIAG_BUFFER_IS_DIAG_RESET;
1913 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1914 "was released due to host reset\n", ioc->name, __func__,
1915 buffer_type);
1916 return 0;
1917 }
1918
1919 rc = _ctl_send_release(ioc, buffer_type, &issue_reset);
1920
1921 if (issue_reset)
1922 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1923 FORCE_BIG_HAMMER);
1924
1925 return rc;
1926 }
1927
1928 /**
1929 * _ctl_diag_read_buffer - request for copy of the diag buffer
1930 * @ioc: per adapter object
1931 * @arg - user space buffer containing ioctl content
1932 */
1933 static long
1934 _ctl_diag_read_buffer(struct MPT2SAS_ADAPTER *ioc, void __user *arg)
1935 {
1936 struct mpt2_diag_read_buffer karg;
1937 struct mpt2_diag_read_buffer __user *uarg = arg;
1938 void *request_data, *diag_data;
1939 Mpi2DiagBufferPostRequest_t *mpi_request;
1940 Mpi2DiagBufferPostReply_t *mpi_reply;
1941 int rc, i;
1942 u8 buffer_type;
1943 unsigned long timeleft, request_size, copy_size;
1944 u16 smid;
1945 u16 ioc_status;
1946 u8 issue_reset = 0;
1947
1948 if (copy_from_user(&karg, arg, sizeof(karg))) {
1949 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1950 __FILE__, __LINE__, __func__);
1951 return -EFAULT;
1952 }
1953
1954 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1955 __func__));
1956
1957 buffer_type = karg.unique_id & 0x000000ff;
1958 if (!_ctl_diag_capability(ioc, buffer_type)) {
1959 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1960 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1961 return -EPERM;
1962 }
1963
1964 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1965 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1966 "registered\n", ioc->name, __func__, karg.unique_id);
1967 return -EINVAL;
1968 }
1969
1970 request_data = ioc->diag_buffer[buffer_type];
1971 if (!request_data) {
1972 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1973 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1974 return -ENOMEM;
1975 }
1976
1977 request_size = ioc->diag_buffer_sz[buffer_type];
1978
1979 if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
1980 printk(MPT2SAS_ERR_FMT "%s: either the starting_offset "
1981 "or bytes_to_read are not 4 byte aligned\n", ioc->name,
1982 __func__);
1983 return -EINVAL;
1984 }
1985
1986 if (karg.starting_offset > request_size)
1987 return -EINVAL;
1988
1989 diag_data = (void *)(request_data + karg.starting_offset);
1990 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: diag_buffer(%p), "
1991 "offset(%d), sz(%d)\n", ioc->name, __func__,
1992 diag_data, karg.starting_offset, karg.bytes_to_read));
1993
1994 /* Truncate data on requests that are too large */
1995 if ((diag_data + karg.bytes_to_read < diag_data) ||
1996 (diag_data + karg.bytes_to_read > request_data + request_size))
1997 copy_size = request_size - karg.starting_offset;
1998 else
1999 copy_size = karg.bytes_to_read;
2000
2001 if (copy_to_user((void __user *)uarg->diagnostic_data,
2002 diag_data, copy_size)) {
2003 printk(MPT2SAS_ERR_FMT "%s: Unable to write "
2004 "mpt_diag_read_buffer_t data @ %p\n", ioc->name,
2005 __func__, diag_data);
2006 return -EFAULT;
2007 }
2008
2009 if ((karg.flags & MPT2_FLAGS_REREGISTER) == 0)
2010 return 0;
2011
2012 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: Reregister "
2013 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type));
2014 if ((ioc->diag_buffer_status[buffer_type] &
2015 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
2016 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2017 "buffer_type(0x%02x) is still registered\n", ioc->name,
2018 __func__, buffer_type));
2019 return 0;
2020 }
2021 /* Get a free request frame and save the message context.
2022 */
2023
2024 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
2025 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
2026 ioc->name, __func__);
2027 rc = -EAGAIN;
2028 goto out;
2029 }
2030
2031 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
2032 if (!smid) {
2033 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2034 ioc->name, __func__);
2035 rc = -EAGAIN;
2036 goto out;
2037 }
2038
2039 rc = 0;
2040 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
2041 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
2042 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
2043 ioc->ctl_cmds.smid = smid;
2044
2045 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
2046 mpi_request->BufferType = buffer_type;
2047 mpi_request->BufferLength =
2048 cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
2049 mpi_request->BufferAddress =
2050 cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
2051 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
2052 mpi_request->ProductSpecific[i] =
2053 cpu_to_le32(ioc->product_specific[buffer_type][i]);
2054 mpi_request->VF_ID = 0; /* TODO */
2055 mpi_request->VP_ID = 0;
2056
2057 init_completion(&ioc->ctl_cmds.done);
2058 mpt2sas_base_put_smid_default(ioc, smid);
2059 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
2060 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
2061
2062 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
2063 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
2064 __func__);
2065 _debug_dump_mf(mpi_request,
2066 sizeof(Mpi2DiagBufferPostRequest_t)/4);
2067 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
2068 issue_reset = 1;
2069 goto issue_host_reset;
2070 }
2071
2072 /* process the completed Reply Message Frame */
2073 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
2074 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
2075 ioc->name, __func__);
2076 rc = -EFAULT;
2077 goto out;
2078 }
2079
2080 mpi_reply = ioc->ctl_cmds.reply;
2081 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
2082
2083 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
2084 ioc->diag_buffer_status[buffer_type] |=
2085 MPT2_DIAG_BUFFER_IS_REGISTERED;
2086 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
2087 ioc->name, __func__));
2088 } else {
2089 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
2090 "log_info(0x%08x)\n", ioc->name, __func__,
2091 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
2092 rc = -EFAULT;
2093 }
2094
2095 issue_host_reset:
2096 if (issue_reset)
2097 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2098 FORCE_BIG_HAMMER);
2099
2100 out:
2101
2102 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
2103 return rc;
2104 }
2105
2106
2107 #ifdef CONFIG_COMPAT
2108 /**
2109 * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
2110 * @ioc: per adapter object
2111 * @cmd - ioctl opcode
2112 * @arg - (struct mpt2_ioctl_command32)
2113 *
2114 * MPT2COMMAND32 - Handle 32bit applications running on 64bit os.
2115 */
2116 static long
2117 _ctl_compat_mpt_command(struct MPT2SAS_ADAPTER *ioc, unsigned cmd,
2118 void __user *arg)
2119 {
2120 struct mpt2_ioctl_command32 karg32;
2121 struct mpt2_ioctl_command32 __user *uarg;
2122 struct mpt2_ioctl_command karg;
2123
2124 if (_IOC_SIZE(cmd) != sizeof(struct mpt2_ioctl_command32))
2125 return -EINVAL;
2126
2127 uarg = (struct mpt2_ioctl_command32 __user *) arg;
2128
2129 if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
2130 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2131 __FILE__, __LINE__, __func__);
2132 return -EFAULT;
2133 }
2134
2135 memset(&karg, 0, sizeof(struct mpt2_ioctl_command));
2136 karg.hdr.ioc_number = karg32.hdr.ioc_number;
2137 karg.hdr.port_number = karg32.hdr.port_number;
2138 karg.hdr.max_data_size = karg32.hdr.max_data_size;
2139 karg.timeout = karg32.timeout;
2140 karg.max_reply_bytes = karg32.max_reply_bytes;
2141 karg.data_in_size = karg32.data_in_size;
2142 karg.data_out_size = karg32.data_out_size;
2143 karg.max_sense_bytes = karg32.max_sense_bytes;
2144 karg.data_sge_offset = karg32.data_sge_offset;
2145 karg.reply_frame_buf_ptr = compat_ptr(karg32.reply_frame_buf_ptr);
2146 karg.data_in_buf_ptr = compat_ptr(karg32.data_in_buf_ptr);
2147 karg.data_out_buf_ptr = compat_ptr(karg32.data_out_buf_ptr);
2148 karg.sense_data_ptr = compat_ptr(karg32.sense_data_ptr);
2149 return _ctl_do_mpt_command(ioc, karg, &uarg->mf);
2150 }
2151 #endif
2152
2153 /**
2154 * _ctl_ioctl_main - main ioctl entry point
2155 * @file - (struct file)
2156 * @cmd - ioctl opcode
2157 * @arg -
2158 * compat - handles 32 bit applications in 64bit os
2159 */
2160 static long
2161 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg,
2162 u8 compat)
2163 {
2164 struct MPT2SAS_ADAPTER *ioc;
2165 struct mpt2_ioctl_header ioctl_header;
2166 enum block_state state;
2167 long ret = -EINVAL;
2168
2169 /* get IOCTL header */
2170 if (copy_from_user(&ioctl_header, (char __user *)arg,
2171 sizeof(struct mpt2_ioctl_header))) {
2172 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2173 __FILE__, __LINE__, __func__);
2174 return -EFAULT;
2175 }
2176
2177 if (_ctl_verify_adapter(ioctl_header.ioc_number, &ioc) == -1 || !ioc)
2178 return -ENODEV;
2179 if (ioc->shost_recovery || ioc->pci_error_recovery ||
2180 ioc->is_driver_loading)
2181 return -EAGAIN;
2182
2183 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
2184 if (state == NON_BLOCKING) {
2185 if (!mutex_trylock(&ioc->ctl_cmds.mutex))
2186 return -EAGAIN;
2187 } else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex)) {
2188 return -ERESTARTSYS;
2189 }
2190
2191 switch (cmd) {
2192 case MPT2IOCINFO:
2193 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_iocinfo))
2194 ret = _ctl_getiocinfo(ioc, arg);
2195 break;
2196 #ifdef CONFIG_COMPAT
2197 case MPT2COMMAND32:
2198 #endif
2199 case MPT2COMMAND:
2200 {
2201 struct mpt2_ioctl_command __user *uarg;
2202 struct mpt2_ioctl_command karg;
2203 #ifdef CONFIG_COMPAT
2204 if (compat) {
2205 ret = _ctl_compat_mpt_command(ioc, cmd, arg);
2206 break;
2207 }
2208 #endif
2209 if (copy_from_user(&karg, arg, sizeof(karg))) {
2210 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2211 __FILE__, __LINE__, __func__);
2212 ret = -EFAULT;
2213 break;
2214 }
2215
2216 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_command)) {
2217 uarg = arg;
2218 ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf);
2219 }
2220 break;
2221 }
2222 case MPT2EVENTQUERY:
2223 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventquery))
2224 ret = _ctl_eventquery(ioc, arg);
2225 break;
2226 case MPT2EVENTENABLE:
2227 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventenable))
2228 ret = _ctl_eventenable(ioc, arg);
2229 break;
2230 case MPT2EVENTREPORT:
2231 ret = _ctl_eventreport(ioc, arg);
2232 break;
2233 case MPT2HARDRESET:
2234 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_diag_reset))
2235 ret = _ctl_do_reset(ioc, arg);
2236 break;
2237 case MPT2BTDHMAPPING:
2238 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_btdh_mapping))
2239 ret = _ctl_btdh_mapping(ioc, arg);
2240 break;
2241 case MPT2DIAGREGISTER:
2242 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_register))
2243 ret = _ctl_diag_register(ioc, arg);
2244 break;
2245 case MPT2DIAGUNREGISTER:
2246 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_unregister))
2247 ret = _ctl_diag_unregister(ioc, arg);
2248 break;
2249 case MPT2DIAGQUERY:
2250 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_query))
2251 ret = _ctl_diag_query(ioc, arg);
2252 break;
2253 case MPT2DIAGRELEASE:
2254 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_release))
2255 ret = _ctl_diag_release(ioc, arg);
2256 break;
2257 case MPT2DIAGREADBUFFER:
2258 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_read_buffer))
2259 ret = _ctl_diag_read_buffer(ioc, arg);
2260 break;
2261 default:
2262
2263 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT
2264 "unsupported ioctl opcode(0x%08x)\n", ioc->name, cmd));
2265 break;
2266 }
2267
2268 mutex_unlock(&ioc->ctl_cmds.mutex);
2269 return ret;
2270 }
2271
2272 /**
2273 * _ctl_ioctl - main ioctl entry point (unlocked)
2274 * @file - (struct file)
2275 * @cmd - ioctl opcode
2276 * @arg -
2277 */
2278 static long
2279 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2280 {
2281 long ret;
2282
2283 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0);
2284 return ret;
2285 }
2286 #ifdef CONFIG_COMPAT
2287 /**
2288 * _ctl_ioctl_compat - main ioctl entry point (compat)
2289 * @file -
2290 * @cmd -
2291 * @arg -
2292 *
2293 * This routine handles 32 bit applications in 64bit os.
2294 */
2295 static long
2296 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2297 {
2298 long ret;
2299
2300 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1);
2301 return ret;
2302 }
2303 #endif
2304
2305 /* scsi host attributes */
2306
2307 /**
2308 * _ctl_version_fw_show - firmware version
2309 * @cdev - pointer to embedded class device
2310 * @buf - the buffer returned
2311 *
2312 * A sysfs 'read-only' shost attribute.
2313 */
2314 static ssize_t
2315 _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr,
2316 char *buf)
2317 {
2318 struct Scsi_Host *shost = class_to_shost(cdev);
2319 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2320
2321 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2322 (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2323 (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2324 (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2325 ioc->facts.FWVersion.Word & 0x000000FF);
2326 }
2327 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL);
2328
2329 /**
2330 * _ctl_version_bios_show - bios version
2331 * @cdev - pointer to embedded class device
2332 * @buf - the buffer returned
2333 *
2334 * A sysfs 'read-only' shost attribute.
2335 */
2336 static ssize_t
2337 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr,
2338 char *buf)
2339 {
2340 struct Scsi_Host *shost = class_to_shost(cdev);
2341 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2342
2343 u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2344
2345 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2346 (version & 0xFF000000) >> 24,
2347 (version & 0x00FF0000) >> 16,
2348 (version & 0x0000FF00) >> 8,
2349 version & 0x000000FF);
2350 }
2351 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL);
2352
2353 /**
2354 * _ctl_version_mpi_show - MPI (message passing interface) version
2355 * @cdev - pointer to embedded class device
2356 * @buf - the buffer returned
2357 *
2358 * A sysfs 'read-only' shost attribute.
2359 */
2360 static ssize_t
2361 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr,
2362 char *buf)
2363 {
2364 struct Scsi_Host *shost = class_to_shost(cdev);
2365 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2366
2367 return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
2368 ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
2369 }
2370 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL);
2371
2372 /**
2373 * _ctl_version_product_show - product name
2374 * @cdev - pointer to embedded class device
2375 * @buf - the buffer returned
2376 *
2377 * A sysfs 'read-only' shost attribute.
2378 */
2379 static ssize_t
2380 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr,
2381 char *buf)
2382 {
2383 struct Scsi_Host *shost = class_to_shost(cdev);
2384 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2385
2386 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
2387 }
2388 static DEVICE_ATTR(version_product, S_IRUGO,
2389 _ctl_version_product_show, NULL);
2390
2391 /**
2392 * _ctl_version_nvdata_persistent_show - ndvata persistent version
2393 * @cdev - pointer to embedded class device
2394 * @buf - the buffer returned
2395 *
2396 * A sysfs 'read-only' shost attribute.
2397 */
2398 static ssize_t
2399 _ctl_version_nvdata_persistent_show(struct device *cdev,
2400 struct device_attribute *attr, char *buf)
2401 {
2402 struct Scsi_Host *shost = class_to_shost(cdev);
2403 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2404
2405 return snprintf(buf, PAGE_SIZE, "%08xh\n",
2406 le32_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
2407 }
2408 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
2409 _ctl_version_nvdata_persistent_show, NULL);
2410
2411 /**
2412 * _ctl_version_nvdata_default_show - nvdata default version
2413 * @cdev - pointer to embedded class device
2414 * @buf - the buffer returned
2415 *
2416 * A sysfs 'read-only' shost attribute.
2417 */
2418 static ssize_t
2419 _ctl_version_nvdata_default_show(struct device *cdev,
2420 struct device_attribute *attr, char *buf)
2421 {
2422 struct Scsi_Host *shost = class_to_shost(cdev);
2423 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2424
2425 return snprintf(buf, PAGE_SIZE, "%08xh\n",
2426 le32_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
2427 }
2428 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
2429 _ctl_version_nvdata_default_show, NULL);
2430
2431 /**
2432 * _ctl_board_name_show - board name
2433 * @cdev - pointer to embedded class device
2434 * @buf - the buffer returned
2435 *
2436 * A sysfs 'read-only' shost attribute.
2437 */
2438 static ssize_t
2439 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr,
2440 char *buf)
2441 {
2442 struct Scsi_Host *shost = class_to_shost(cdev);
2443 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2444
2445 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
2446 }
2447 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL);
2448
2449 /**
2450 * _ctl_board_assembly_show - board assembly name
2451 * @cdev - pointer to embedded class device
2452 * @buf - the buffer returned
2453 *
2454 * A sysfs 'read-only' shost attribute.
2455 */
2456 static ssize_t
2457 _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr,
2458 char *buf)
2459 {
2460 struct Scsi_Host *shost = class_to_shost(cdev);
2461 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2462
2463 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
2464 }
2465 static DEVICE_ATTR(board_assembly, S_IRUGO,
2466 _ctl_board_assembly_show, NULL);
2467
2468 /**
2469 * _ctl_board_tracer_show - board tracer number
2470 * @cdev - pointer to embedded class device
2471 * @buf - the buffer returned
2472 *
2473 * A sysfs 'read-only' shost attribute.
2474 */
2475 static ssize_t
2476 _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr,
2477 char *buf)
2478 {
2479 struct Scsi_Host *shost = class_to_shost(cdev);
2480 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2481
2482 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
2483 }
2484 static DEVICE_ATTR(board_tracer, S_IRUGO,
2485 _ctl_board_tracer_show, NULL);
2486
2487 /**
2488 * _ctl_io_delay_show - io missing delay
2489 * @cdev - pointer to embedded class device
2490 * @buf - the buffer returned
2491 *
2492 * This is for firmware implemention for deboucing device
2493 * removal events.
2494 *
2495 * A sysfs 'read-only' shost attribute.
2496 */
2497 static ssize_t
2498 _ctl_io_delay_show(struct device *cdev, struct device_attribute *attr,
2499 char *buf)
2500 {
2501 struct Scsi_Host *shost = class_to_shost(cdev);
2502 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2503
2504 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
2505 }
2506 static DEVICE_ATTR(io_delay, S_IRUGO,
2507 _ctl_io_delay_show, NULL);
2508
2509 /**
2510 * _ctl_device_delay_show - device missing delay
2511 * @cdev - pointer to embedded class device
2512 * @buf - the buffer returned
2513 *
2514 * This is for firmware implemention for deboucing device
2515 * removal events.
2516 *
2517 * A sysfs 'read-only' shost attribute.
2518 */
2519 static ssize_t
2520 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr,
2521 char *buf)
2522 {
2523 struct Scsi_Host *shost = class_to_shost(cdev);
2524 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2525
2526 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
2527 }
2528 static DEVICE_ATTR(device_delay, S_IRUGO,
2529 _ctl_device_delay_show, NULL);
2530
2531 /**
2532 * _ctl_fw_queue_depth_show - global credits
2533 * @cdev - pointer to embedded class device
2534 * @buf - the buffer returned
2535 *
2536 * This is firmware queue depth limit
2537 *
2538 * A sysfs 'read-only' shost attribute.
2539 */
2540 static ssize_t
2541 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
2542 char *buf)
2543 {
2544 struct Scsi_Host *shost = class_to_shost(cdev);
2545 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2546
2547 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
2548 }
2549 static DEVICE_ATTR(fw_queue_depth, S_IRUGO,
2550 _ctl_fw_queue_depth_show, NULL);
2551
2552 /**
2553 * _ctl_sas_address_show - sas address
2554 * @cdev - pointer to embedded class device
2555 * @buf - the buffer returned
2556 *
2557 * This is the controller sas address
2558 *
2559 * A sysfs 'read-only' shost attribute.
2560 */
2561 static ssize_t
2562 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr,
2563 char *buf)
2564 {
2565 struct Scsi_Host *shost = class_to_shost(cdev);
2566 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2567
2568 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2569 (unsigned long long)ioc->sas_hba.sas_address);
2570 }
2571 static DEVICE_ATTR(host_sas_address, S_IRUGO,
2572 _ctl_host_sas_address_show, NULL);
2573
2574 /**
2575 * _ctl_logging_level_show - logging level
2576 * @cdev - pointer to embedded class device
2577 * @buf - the buffer returned
2578 *
2579 * A sysfs 'read/write' shost attribute.
2580 */
2581 static ssize_t
2582 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr,
2583 char *buf)
2584 {
2585 struct Scsi_Host *shost = class_to_shost(cdev);
2586 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2587
2588 return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
2589 }
2590 static ssize_t
2591 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr,
2592 const char *buf, size_t count)
2593 {
2594 struct Scsi_Host *shost = class_to_shost(cdev);
2595 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2596 int val = 0;
2597
2598 if (sscanf(buf, "%x", &val) != 1)
2599 return -EINVAL;
2600
2601 ioc->logging_level = val;
2602 printk(MPT2SAS_INFO_FMT "logging_level=%08xh\n", ioc->name,
2603 ioc->logging_level);
2604 return strlen(buf);
2605 }
2606 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
2607 _ctl_logging_level_show, _ctl_logging_level_store);
2608
2609 /* device attributes */
2610 /*
2611 * _ctl_fwfault_debug_show - show/store fwfault_debug
2612 * @cdev - pointer to embedded class device
2613 * @buf - the buffer returned
2614 *
2615 * mpt2sas_fwfault_debug is command line option
2616 * A sysfs 'read/write' shost attribute.
2617 */
2618 static ssize_t
2619 _ctl_fwfault_debug_show(struct device *cdev,
2620 struct device_attribute *attr, char *buf)
2621 {
2622 struct Scsi_Host *shost = class_to_shost(cdev);
2623 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2624
2625 return snprintf(buf, PAGE_SIZE, "%d\n", ioc->fwfault_debug);
2626 }
2627 static ssize_t
2628 _ctl_fwfault_debug_store(struct device *cdev,
2629 struct device_attribute *attr, const char *buf, size_t count)
2630 {
2631 struct Scsi_Host *shost = class_to_shost(cdev);
2632 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2633 int val = 0;
2634
2635 if (sscanf(buf, "%d", &val) != 1)
2636 return -EINVAL;
2637
2638 ioc->fwfault_debug = val;
2639 printk(MPT2SAS_INFO_FMT "fwfault_debug=%d\n", ioc->name,
2640 ioc->fwfault_debug);
2641 return strlen(buf);
2642 }
2643 static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR,
2644 _ctl_fwfault_debug_show, _ctl_fwfault_debug_store);
2645
2646
2647 /**
2648 * _ctl_ioc_reset_count_show - ioc reset count
2649 * @cdev - pointer to embedded class device
2650 * @buf - the buffer returned
2651 *
2652 * This is firmware queue depth limit
2653 *
2654 * A sysfs 'read-only' shost attribute.
2655 */
2656 static ssize_t
2657 _ctl_ioc_reset_count_show(struct device *cdev, struct device_attribute *attr,
2658 char *buf)
2659 {
2660 struct Scsi_Host *shost = class_to_shost(cdev);
2661 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2662
2663 return snprintf(buf, PAGE_SIZE, "%08d\n", ioc->ioc_reset_count);
2664 }
2665 static DEVICE_ATTR(ioc_reset_count, S_IRUGO,
2666 _ctl_ioc_reset_count_show, NULL);
2667
2668 /**
2669 * _ctl_ioc_reply_queue_count_show - number of reply queues
2670 * @cdev - pointer to embedded class device
2671 * @buf - the buffer returned
2672 *
2673 * This is number of reply queues
2674 *
2675 * A sysfs 'read-only' shost attribute.
2676 */
2677 static ssize_t
2678 _ctl_ioc_reply_queue_count_show(struct device *cdev,
2679 struct device_attribute *attr, char *buf)
2680 {
2681 u8 reply_queue_count;
2682 struct Scsi_Host *shost = class_to_shost(cdev);
2683 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2684
2685 if ((ioc->facts.IOCCapabilities &
2686 MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable)
2687 reply_queue_count = ioc->reply_queue_count;
2688 else
2689 reply_queue_count = 1;
2690 return snprintf(buf, PAGE_SIZE, "%d\n", reply_queue_count);
2691 }
2692 static DEVICE_ATTR(reply_queue_count, S_IRUGO,
2693 _ctl_ioc_reply_queue_count_show, NULL);
2694
2695 /**
2696 * _ctl_BRM_status_show - Backup Rail Monitor Status
2697 * @cdev - pointer to embedded class device
2698 * @buf - the buffer returned
2699 *
2700 * This is number of reply queues
2701 *
2702 * A sysfs 'read-only' shost attribute.
2703 */
2704 static ssize_t
2705 _ctl_BRM_status_show(struct device *cdev, struct device_attribute *attr,
2706 char *buf)
2707 {
2708 struct Scsi_Host *shost = class_to_shost(cdev);
2709 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2710 Mpi2IOUnitPage3_t *io_unit_pg3 = NULL;
2711 Mpi2ConfigReply_t mpi_reply;
2712 u16 backup_rail_monitor_status = 0;
2713 u16 ioc_status;
2714 int sz;
2715 ssize_t rc = 0;
2716
2717 if (!ioc->is_warpdrive) {
2718 printk(MPT2SAS_ERR_FMT "%s: BRM attribute is only for"\
2719 "warpdrive\n", ioc->name, __func__);
2720 goto out;
2721 }
2722
2723 /* allocate upto GPIOVal 36 entries */
2724 sz = offsetof(Mpi2IOUnitPage3_t, GPIOVal) + (sizeof(u16) * 36);
2725 io_unit_pg3 = kzalloc(sz, GFP_KERNEL);
2726 if (!io_unit_pg3) {
2727 printk(MPT2SAS_ERR_FMT "%s: failed allocating memory"\
2728 "for iounit_pg3: (%d) bytes\n", ioc->name, __func__, sz);
2729 goto out;
2730 }
2731
2732 if (mpt2sas_config_get_iounit_pg3(ioc, &mpi_reply, io_unit_pg3, sz) !=
2733 0) {
2734 printk(MPT2SAS_ERR_FMT
2735 "%s: failed reading iounit_pg3\n", ioc->name,
2736 __func__);
2737 goto out;
2738 }
2739
2740 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
2741 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2742 printk(MPT2SAS_ERR_FMT "%s: iounit_pg3 failed with"\
2743 "ioc_status(0x%04x)\n", ioc->name, __func__, ioc_status);
2744 goto out;
2745 }
2746
2747 if (io_unit_pg3->GPIOCount < 25) {
2748 printk(MPT2SAS_ERR_FMT "%s: iounit_pg3->GPIOCount less than"\
2749 "25 entries, detected (%d) entries\n", ioc->name, __func__,
2750 io_unit_pg3->GPIOCount);
2751 goto out;
2752 }
2753
2754 /* BRM status is in bit zero of GPIOVal[24] */
2755 backup_rail_monitor_status = le16_to_cpu(io_unit_pg3->GPIOVal[24]);
2756 rc = snprintf(buf, PAGE_SIZE, "%d\n", (backup_rail_monitor_status & 1));
2757
2758 out:
2759 kfree(io_unit_pg3);
2760 return rc;
2761 }
2762 static DEVICE_ATTR(BRM_status, S_IRUGO, _ctl_BRM_status_show, NULL);
2763
2764 struct DIAG_BUFFER_START {
2765 __le32 Size;
2766 __le32 DiagVersion;
2767 u8 BufferType;
2768 u8 Reserved[3];
2769 __le32 Reserved1;
2770 __le32 Reserved2;
2771 __le32 Reserved3;
2772 };
2773 /**
2774 * _ctl_host_trace_buffer_size_show - host buffer size (trace only)
2775 * @cdev - pointer to embedded class device
2776 * @buf - the buffer returned
2777 *
2778 * A sysfs 'read-only' shost attribute.
2779 */
2780 static ssize_t
2781 _ctl_host_trace_buffer_size_show(struct device *cdev,
2782 struct device_attribute *attr, char *buf)
2783 {
2784 struct Scsi_Host *shost = class_to_shost(cdev);
2785 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2786 u32 size = 0;
2787 struct DIAG_BUFFER_START *request_data;
2788
2789 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2790 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2791 "registered\n", ioc->name, __func__);
2792 return 0;
2793 }
2794
2795 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2796 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
2797 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2798 "registered\n", ioc->name, __func__);
2799 return 0;
2800 }
2801
2802 request_data = (struct DIAG_BUFFER_START *)
2803 ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE];
2804 if ((le32_to_cpu(request_data->DiagVersion) == 0x00000000 ||
2805 le32_to_cpu(request_data->DiagVersion) == 0x01000000) &&
2806 le32_to_cpu(request_data->Reserved3) == 0x4742444c)
2807 size = le32_to_cpu(request_data->Size);
2808
2809 ioc->ring_buffer_sz = size;
2810 return snprintf(buf, PAGE_SIZE, "%d\n", size);
2811 }
2812 static DEVICE_ATTR(host_trace_buffer_size, S_IRUGO,
2813 _ctl_host_trace_buffer_size_show, NULL);
2814
2815 /**
2816 * _ctl_host_trace_buffer_show - firmware ring buffer (trace only)
2817 * @cdev - pointer to embedded class device
2818 * @buf - the buffer returned
2819 *
2820 * A sysfs 'read/write' shost attribute.
2821 *
2822 * You will only be able to read 4k bytes of ring buffer at a time.
2823 * In order to read beyond 4k bytes, you will have to write out the
2824 * offset to the same attribute, it will move the pointer.
2825 */
2826 static ssize_t
2827 _ctl_host_trace_buffer_show(struct device *cdev, struct device_attribute *attr,
2828 char *buf)
2829 {
2830 struct Scsi_Host *shost = class_to_shost(cdev);
2831 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2832 void *request_data;
2833 u32 size;
2834
2835 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2836 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2837 "registered\n", ioc->name, __func__);
2838 return 0;
2839 }
2840
2841 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2842 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
2843 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2844 "registered\n", ioc->name, __func__);
2845 return 0;
2846 }
2847
2848 if (ioc->ring_buffer_offset > ioc->ring_buffer_sz)
2849 return 0;
2850
2851 size = ioc->ring_buffer_sz - ioc->ring_buffer_offset;
2852 size = (size > PAGE_SIZE) ? PAGE_SIZE : size;
2853 request_data = ioc->diag_buffer[0] + ioc->ring_buffer_offset;
2854 memcpy(buf, request_data, size);
2855 return size;
2856 }
2857
2858 static ssize_t
2859 _ctl_host_trace_buffer_store(struct device *cdev, struct device_attribute *attr,
2860 const char *buf, size_t count)
2861 {
2862 struct Scsi_Host *shost = class_to_shost(cdev);
2863 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2864 int val = 0;
2865
2866 if (sscanf(buf, "%d", &val) != 1)
2867 return -EINVAL;
2868
2869 ioc->ring_buffer_offset = val;
2870 return strlen(buf);
2871 }
2872 static DEVICE_ATTR(host_trace_buffer, S_IRUGO | S_IWUSR,
2873 _ctl_host_trace_buffer_show, _ctl_host_trace_buffer_store);
2874
2875 /*****************************************/
2876
2877 /**
2878 * _ctl_host_trace_buffer_enable_show - firmware ring buffer (trace only)
2879 * @cdev - pointer to embedded class device
2880 * @buf - the buffer returned
2881 *
2882 * A sysfs 'read/write' shost attribute.
2883 *
2884 * This is a mechnism to post/release host_trace_buffers
2885 */
2886 static ssize_t
2887 _ctl_host_trace_buffer_enable_show(struct device *cdev,
2888 struct device_attribute *attr, char *buf)
2889 {
2890 struct Scsi_Host *shost = class_to_shost(cdev);
2891 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2892
2893 if ((!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) ||
2894 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2895 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0))
2896 return snprintf(buf, PAGE_SIZE, "off\n");
2897 else if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2898 MPT2_DIAG_BUFFER_IS_RELEASED))
2899 return snprintf(buf, PAGE_SIZE, "release\n");
2900 else
2901 return snprintf(buf, PAGE_SIZE, "post\n");
2902 }
2903
2904 static ssize_t
2905 _ctl_host_trace_buffer_enable_store(struct device *cdev,
2906 struct device_attribute *attr, const char *buf, size_t count)
2907 {
2908 struct Scsi_Host *shost = class_to_shost(cdev);
2909 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2910 char str[10] = "";
2911 struct mpt2_diag_register diag_register;
2912 u8 issue_reset = 0;
2913
2914 if (sscanf(buf, "%9s", str) != 1)
2915 return -EINVAL;
2916
2917 if (!strcmp(str, "post")) {
2918 /* exit out if host buffers are already posted */
2919 if ((ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) &&
2920 (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2921 MPT2_DIAG_BUFFER_IS_REGISTERED) &&
2922 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2923 MPT2_DIAG_BUFFER_IS_RELEASED) == 0))
2924 goto out;
2925 memset(&diag_register, 0, sizeof(struct mpt2_diag_register));
2926 printk(MPT2SAS_INFO_FMT "posting host trace buffers\n",
2927 ioc->name);
2928 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
2929 diag_register.requested_buffer_size = (1024 * 1024);
2930 diag_register.unique_id = 0x7075900;
2931 ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] = 0;
2932 _ctl_diag_register_2(ioc, &diag_register);
2933 } else if (!strcmp(str, "release")) {
2934 /* exit out if host buffers are already released */
2935 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE])
2936 goto out;
2937 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2938 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0)
2939 goto out;
2940 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2941 MPT2_DIAG_BUFFER_IS_RELEASED))
2942 goto out;
2943 printk(MPT2SAS_INFO_FMT "releasing host trace buffer\n",
2944 ioc->name);
2945 _ctl_send_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE, &issue_reset);
2946 }
2947
2948 out:
2949 return strlen(buf);
2950 }
2951 static DEVICE_ATTR(host_trace_buffer_enable, S_IRUGO | S_IWUSR,
2952 _ctl_host_trace_buffer_enable_show, _ctl_host_trace_buffer_enable_store);
2953
2954 struct device_attribute *mpt2sas_host_attrs[] = {
2955 &dev_attr_version_fw,
2956 &dev_attr_version_bios,
2957 &dev_attr_version_mpi,
2958 &dev_attr_version_product,
2959 &dev_attr_version_nvdata_persistent,
2960 &dev_attr_version_nvdata_default,
2961 &dev_attr_board_name,
2962 &dev_attr_board_assembly,
2963 &dev_attr_board_tracer,
2964 &dev_attr_io_delay,
2965 &dev_attr_device_delay,
2966 &dev_attr_logging_level,
2967 &dev_attr_fwfault_debug,
2968 &dev_attr_fw_queue_depth,
2969 &dev_attr_host_sas_address,
2970 &dev_attr_ioc_reset_count,
2971 &dev_attr_host_trace_buffer_size,
2972 &dev_attr_host_trace_buffer,
2973 &dev_attr_host_trace_buffer_enable,
2974 &dev_attr_reply_queue_count,
2975 &dev_attr_BRM_status,
2976 NULL,
2977 };
2978
2979 /**
2980 * _ctl_device_sas_address_show - sas address
2981 * @cdev - pointer to embedded class device
2982 * @buf - the buffer returned
2983 *
2984 * This is the sas address for the target
2985 *
2986 * A sysfs 'read-only' shost attribute.
2987 */
2988 static ssize_t
2989 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr,
2990 char *buf)
2991 {
2992 struct scsi_device *sdev = to_scsi_device(dev);
2993 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2994
2995 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2996 (unsigned long long)sas_device_priv_data->sas_target->sas_address);
2997 }
2998 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL);
2999
3000 /**
3001 * _ctl_device_handle_show - device handle
3002 * @cdev - pointer to embedded class device
3003 * @buf - the buffer returned
3004 *
3005 * This is the firmware assigned device handle
3006 *
3007 * A sysfs 'read-only' shost attribute.
3008 */
3009 static ssize_t
3010 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr,
3011 char *buf)
3012 {
3013 struct scsi_device *sdev = to_scsi_device(dev);
3014 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
3015
3016 return snprintf(buf, PAGE_SIZE, "0x%04x\n",
3017 sas_device_priv_data->sas_target->handle);
3018 }
3019 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL);
3020
3021 struct device_attribute *mpt2sas_dev_attrs[] = {
3022 &dev_attr_sas_address,
3023 &dev_attr_sas_device_handle,
3024 NULL,
3025 };
3026
3027 static const struct file_operations ctl_fops = {
3028 .owner = THIS_MODULE,
3029 .unlocked_ioctl = _ctl_ioctl,
3030 .release = _ctl_release,
3031 .poll = _ctl_poll,
3032 .fasync = _ctl_fasync,
3033 #ifdef CONFIG_COMPAT
3034 .compat_ioctl = _ctl_ioctl_compat,
3035 #endif
3036 .llseek = noop_llseek,
3037 };
3038
3039 static struct miscdevice ctl_dev = {
3040 .minor = MPT2SAS_MINOR,
3041 .name = MPT2SAS_DEV_NAME,
3042 .fops = &ctl_fops,
3043 };
3044
3045 /**
3046 * mpt2sas_ctl_init - main entry point for ctl.
3047 *
3048 */
3049 void
3050 mpt2sas_ctl_init(void)
3051 {
3052 async_queue = NULL;
3053 if (misc_register(&ctl_dev) < 0)
3054 printk(KERN_ERR "%s can't register misc device [minor=%d]\n",
3055 MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
3056
3057 init_waitqueue_head(&ctl_poll_wait);
3058 }
3059
3060 /**
3061 * mpt2sas_ctl_exit - exit point for ctl
3062 *
3063 */
3064 void
3065 mpt2sas_ctl_exit(void)
3066 {
3067 struct MPT2SAS_ADAPTER *ioc;
3068 int i;
3069
3070 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
3071
3072 /* free memory associated to diag buffers */
3073 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
3074 if (!ioc->diag_buffer[i])
3075 continue;
3076 pci_free_consistent(ioc->pdev, ioc->diag_buffer_sz[i],
3077 ioc->diag_buffer[i], ioc->diag_buffer_dma[i]);
3078 ioc->diag_buffer[i] = NULL;
3079 ioc->diag_buffer_status[i] = 0;
3080 }
3081
3082 kfree(ioc->event_log);
3083 }
3084 misc_deregister(&ctl_dev);
3085 }
3086
Linux with added FPC-III support