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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / scsi / mpt2sas / mpt2sas_ctl.c
blob0302e085e9eca4a7721b5d3c3b0f4d8daeaf0d3f
1 /*
2 * Management Module Support for MPT (Message Passing Technology) based
3 * controllers
4 *
5 * This code is based on drivers/scsi/mpt2sas/mpt2_ctl.c
6 * Copyright (C) 2007-2010 LSI Corporation
7 * (mailto:DL-MPTFusionLinux@lsi.com)
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * NO WARRANTY
20 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
21 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
22 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
23 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
24 * solely responsible for determining the appropriateness of using and
25 * distributing the Program and assumes all risks associated with its
26 * exercise of rights under this Agreement, including but not limited to
27 * the risks and costs of program errors, damage to or loss of data,
28 * programs or equipment, and unavailability or interruption of operations.
29
30 * DISCLAIMER OF LIABILITY
31 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
32 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
34 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
35 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
36 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
37 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
38
39 * You should have received a copy of the GNU General Public License
40 * along with this program; if not, write to the Free Software
41 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
42 * USA.
43 */
44
45 #include <linux/version.h>
46 #include <linux/kernel.h>
47 #include <linux/module.h>
48 #include <linux/errno.h>
49 #include <linux/init.h>
50 #include <linux/slab.h>
51 #include <linux/types.h>
52 #include <linux/pci.h>
53 #include <linux/delay.h>
54 #include <linux/smp_lock.h>
55 #include <linux/compat.h>
56 #include <linux/poll.h>
57
58 #include <linux/io.h>
59 #include <linux/uaccess.h>
60
61 #include "mpt2sas_base.h"
62 #include "mpt2sas_ctl.h"
63
64 static 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 /**
84 * _ctl_sas_device_find_by_handle - sas device search
85 * @ioc: per adapter object
86 * @handle: sas device handle (assigned by firmware)
87 * Context: Calling function should acquire ioc->sas_device_lock
88 *
89 * This searches for sas_device based on sas_address, then return sas_device
90 * object.
91 */
92 static struct _sas_device *
93 _ctl_sas_device_find_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle)
94 {
95 struct _sas_device *sas_device, *r;
96
97 r = NULL;
98 list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
99 if (sas_device->handle != handle)
100 continue;
101 r = sas_device;
102 goto out;
103 }
104
105 out:
106 return r;
107 }
108
109 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
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 helpfull 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 * @state - NON_BLOCKING or BLOCKING
624 */
625 static long
626 _ctl_do_mpt_command(struct MPT2SAS_ADAPTER *ioc,
627 struct mpt2_ioctl_command karg, void __user *mf, enum block_state state)
628 {
629 MPI2RequestHeader_t *mpi_request = NULL, *request;
630 MPI2DefaultReply_t *mpi_reply;
631 u32 ioc_state;
632 u16 ioc_status;
633 u16 smid;
634 unsigned long timeout, timeleft;
635 u8 issue_reset;
636 u32 sz;
637 void *psge;
638 void *data_out = NULL;
639 dma_addr_t data_out_dma;
640 size_t data_out_sz = 0;
641 void *data_in = NULL;
642 dma_addr_t data_in_dma;
643 size_t data_in_sz = 0;
644 u32 sgl_flags;
645 long ret;
646 u16 wait_state_count;
647
648 issue_reset = 0;
649
650 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
651 return -EAGAIN;
652 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
653 return -ERESTARTSYS;
654
655 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
656 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
657 ioc->name, __func__);
658 ret = -EAGAIN;
659 goto out;
660 }
661
662 wait_state_count = 0;
663 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
664 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
665 if (wait_state_count++ == 10) {
666 printk(MPT2SAS_ERR_FMT
667 "%s: failed due to ioc not operational\n",
668 ioc->name, __func__);
669 ret = -EFAULT;
670 goto out;
671 }
672 ssleep(1);
673 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
674 printk(MPT2SAS_INFO_FMT "%s: waiting for "
675 "operational state(count=%d)\n", ioc->name,
676 __func__, wait_state_count);
677 }
678 if (wait_state_count)
679 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
680 ioc->name, __func__);
681
682 mpi_request = kzalloc(ioc->request_sz, GFP_KERNEL);
683 if (!mpi_request) {
684 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a memory for "
685 "mpi_request\n", ioc->name, __func__);
686 ret = -ENOMEM;
687 goto out;
688 }
689
690 /* copy in request message frame from user */
691 if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) {
692 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__,
693 __func__);
694 ret = -EFAULT;
695 goto out;
696 }
697
698 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
699 smid = mpt2sas_base_get_smid_hpr(ioc, ioc->ctl_cb_idx);
700 if (!smid) {
701 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
702 ioc->name, __func__);
703 ret = -EAGAIN;
704 goto out;
705 }
706 } else {
707
708 smid = mpt2sas_base_get_smid_scsiio(ioc, ioc->ctl_cb_idx, NULL);
709 if (!smid) {
710 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
711 ioc->name, __func__);
712 ret = -EAGAIN;
713 goto out;
714 }
715 }
716
717 ret = 0;
718 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
719 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
720 request = mpt2sas_base_get_msg_frame(ioc, smid);
721 memcpy(request, mpi_request, karg.data_sge_offset*4);
722 ioc->ctl_cmds.smid = smid;
723 data_out_sz = karg.data_out_size;
724 data_in_sz = karg.data_in_size;
725
726 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
727 mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
728 if (!le16_to_cpu(mpi_request->FunctionDependent1) ||
729 le16_to_cpu(mpi_request->FunctionDependent1) >
730 ioc->facts.MaxDevHandle) {
731 ret = -EINVAL;
732 mpt2sas_base_free_smid(ioc, smid);
733 goto out;
734 }
735 }
736
737 /* obtain dma-able memory for data transfer */
738 if (data_out_sz) /* WRITE */ {
739 data_out = pci_alloc_consistent(ioc->pdev, data_out_sz,
740 &data_out_dma);
741 if (!data_out) {
742 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
743 __LINE__, __func__);
744 ret = -ENOMEM;
745 mpt2sas_base_free_smid(ioc, smid);
746 goto out;
747 }
748 if (copy_from_user(data_out, karg.data_out_buf_ptr,
749 data_out_sz)) {
750 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
751 __LINE__, __func__);
752 ret = -EFAULT;
753 mpt2sas_base_free_smid(ioc, smid);
754 goto out;
755 }
756 }
757
758 if (data_in_sz) /* READ */ {
759 data_in = pci_alloc_consistent(ioc->pdev, data_in_sz,
760 &data_in_dma);
761 if (!data_in) {
762 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
763 __LINE__, __func__);
764 ret = -ENOMEM;
765 mpt2sas_base_free_smid(ioc, smid);
766 goto out;
767 }
768 }
769
770 /* add scatter gather elements */
771 psge = (void *)request + (karg.data_sge_offset*4);
772
773 if (!data_out_sz && !data_in_sz) {
774 mpt2sas_base_build_zero_len_sge(ioc, psge);
775 } else if (data_out_sz && data_in_sz) {
776 /* WRITE sgel first */
777 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
778 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
779 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
780 ioc->base_add_sg_single(psge, sgl_flags |
781 data_out_sz, data_out_dma);
782
783 /* incr sgel */
784 psge += ioc->sge_size;
785
786 /* READ sgel last */
787 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
788 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
789 MPI2_SGE_FLAGS_END_OF_LIST);
790 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
791 ioc->base_add_sg_single(psge, sgl_flags |
792 data_in_sz, data_in_dma);
793 } else if (data_out_sz) /* WRITE */ {
794 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
795 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
796 MPI2_SGE_FLAGS_END_OF_LIST | MPI2_SGE_FLAGS_HOST_TO_IOC);
797 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
798 ioc->base_add_sg_single(psge, sgl_flags |
799 data_out_sz, data_out_dma);
800 } else if (data_in_sz) /* READ */ {
801 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
802 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
803 MPI2_SGE_FLAGS_END_OF_LIST);
804 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
805 ioc->base_add_sg_single(psge, sgl_flags |
806 data_in_sz, data_in_dma);
807 }
808
809 /* send command to firmware */
810 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
811 _ctl_display_some_debug(ioc, smid, "ctl_request", NULL);
812 #endif
813
814 switch (mpi_request->Function) {
815 case MPI2_FUNCTION_SCSI_IO_REQUEST:
816 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
817 {
818 Mpi2SCSIIORequest_t *scsiio_request =
819 (Mpi2SCSIIORequest_t *)request;
820 scsiio_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
821 scsiio_request->SenseBufferLowAddress =
822 mpt2sas_base_get_sense_buffer_dma(ioc, smid);
823 memset(ioc->ctl_cmds.sense, 0, SCSI_SENSE_BUFFERSIZE);
824 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)
825 mpt2sas_base_put_smid_scsi_io(ioc, smid,
826 le16_to_cpu(mpi_request->FunctionDependent1));
827 else
828 mpt2sas_base_put_smid_default(ioc, smid);
829 break;
830 }
831 case MPI2_FUNCTION_SCSI_TASK_MGMT:
832 {
833 Mpi2SCSITaskManagementRequest_t *tm_request =
834 (Mpi2SCSITaskManagementRequest_t *)request;
835
836 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "TASK_MGMT: "
837 "handle(0x%04x), task_type(0x%02x)\n", ioc->name,
838 le16_to_cpu(tm_request->DevHandle), tm_request->TaskType));
839
840 if (tm_request->TaskType ==
841 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK ||
842 tm_request->TaskType ==
843 MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) {
844 if (_ctl_set_task_mid(ioc, &karg, tm_request)) {
845 mpt2sas_base_free_smid(ioc, smid);
846 goto out;
847 }
848 }
849
850 mpt2sas_scsih_set_tm_flag(ioc, le16_to_cpu(
851 tm_request->DevHandle));
852 mpt2sas_base_put_smid_hi_priority(ioc, smid);
853 break;
854 }
855 case MPI2_FUNCTION_SMP_PASSTHROUGH:
856 {
857 Mpi2SmpPassthroughRequest_t *smp_request =
858 (Mpi2SmpPassthroughRequest_t *)mpi_request;
859 u8 *data;
860
861 /* ioc determines which port to use */
862 smp_request->PhysicalPort = 0xFF;
863 if (smp_request->PassthroughFlags &
864 MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE)
865 data = (u8 *)&smp_request->SGL;
866 else
867 data = data_out;
868
869 if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) {
870 ioc->ioc_link_reset_in_progress = 1;
871 ioc->ignore_loginfos = 1;
872 }
873 mpt2sas_base_put_smid_default(ioc, smid);
874 break;
875 }
876 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
877 {
878 Mpi2SasIoUnitControlRequest_t *sasiounit_request =
879 (Mpi2SasIoUnitControlRequest_t *)mpi_request;
880
881 if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET
882 || sasiounit_request->Operation ==
883 MPI2_SAS_OP_PHY_LINK_RESET) {
884 ioc->ioc_link_reset_in_progress = 1;
885 ioc->ignore_loginfos = 1;
886 }
887 mpt2sas_base_put_smid_default(ioc, smid);
888 break;
889 }
890 default:
891 mpt2sas_base_put_smid_default(ioc, smid);
892 break;
893 }
894
895 if (karg.timeout < MPT2_IOCTL_DEFAULT_TIMEOUT)
896 timeout = MPT2_IOCTL_DEFAULT_TIMEOUT;
897 else
898 timeout = karg.timeout;
899 init_completion(&ioc->ctl_cmds.done);
900 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
901 timeout*HZ);
902 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
903 Mpi2SCSITaskManagementRequest_t *tm_request =
904 (Mpi2SCSITaskManagementRequest_t *)mpi_request;
905 mpt2sas_scsih_clear_tm_flag(ioc, le16_to_cpu(
906 tm_request->DevHandle));
907 } else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH ||
908 mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) &&
909 ioc->ioc_link_reset_in_progress) {
910 ioc->ioc_link_reset_in_progress = 0;
911 ioc->ignore_loginfos = 0;
912 }
913 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
914 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
915 __func__);
916 _debug_dump_mf(mpi_request, karg.data_sge_offset);
917 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
918 issue_reset = 1;
919 goto issue_host_reset;
920 }
921
922 mpi_reply = ioc->ctl_cmds.reply;
923 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
924
925 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
926 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT &&
927 (ioc->logging_level & MPT_DEBUG_TM)) {
928 Mpi2SCSITaskManagementReply_t *tm_reply =
929 (Mpi2SCSITaskManagementReply_t *)mpi_reply;
930
931 printk(MPT2SAS_INFO_FMT "TASK_MGMT: "
932 "IOCStatus(0x%04x), IOCLogInfo(0x%08x), "
933 "TerminationCount(0x%08x)\n", ioc->name,
934 le16_to_cpu(tm_reply->IOCStatus),
935 le32_to_cpu(tm_reply->IOCLogInfo),
936 le32_to_cpu(tm_reply->TerminationCount));
937 }
938 #endif
939 /* copy out xdata to user */
940 if (data_in_sz) {
941 if (copy_to_user(karg.data_in_buf_ptr, data_in,
942 data_in_sz)) {
943 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
944 __LINE__, __func__);
945 ret = -ENODATA;
946 goto out;
947 }
948 }
949
950 /* copy out reply message frame to user */
951 if (karg.max_reply_bytes) {
952 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
953 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
954 sz)) {
955 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
956 __LINE__, __func__);
957 ret = -ENODATA;
958 goto out;
959 }
960 }
961
962 /* copy out sense to user */
963 if (karg.max_sense_bytes && (mpi_request->Function ==
964 MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
965 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
966 sz = min_t(u32, karg.max_sense_bytes, SCSI_SENSE_BUFFERSIZE);
967 if (copy_to_user(karg.sense_data_ptr,
968 ioc->ctl_cmds.sense, sz)) {
969 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
970 __LINE__, __func__);
971 ret = -ENODATA;
972 goto out;
973 }
974 }
975
976 issue_host_reset:
977 if (issue_reset) {
978 ret = -ENODATA;
979 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
980 mpi_request->Function ==
981 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
982 printk(MPT2SAS_INFO_FMT "issue target reset: handle "
983 "= (0x%04x)\n", ioc->name,
984 le16_to_cpu(mpi_request->FunctionDependent1));
985 mpt2sas_halt_firmware(ioc);
986 mpt2sas_scsih_issue_tm(ioc,
987 le16_to_cpu(mpi_request->FunctionDependent1), 0, 0,
988 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 10,
989 NULL);
990 ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
991 } else
992 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
993 FORCE_BIG_HAMMER);
994 }
995
996 out:
997
998 /* free memory associated with sg buffers */
999 if (data_in)
1000 pci_free_consistent(ioc->pdev, data_in_sz, data_in,
1001 data_in_dma);
1002
1003 if (data_out)
1004 pci_free_consistent(ioc->pdev, data_out_sz, data_out,
1005 data_out_dma);
1006
1007 kfree(mpi_request);
1008 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1009 mutex_unlock(&ioc->ctl_cmds.mutex);
1010 return ret;
1011 }
1012
1013 /**
1014 * _ctl_getiocinfo - main handler for MPT2IOCINFO opcode
1015 * @arg - user space buffer containing ioctl content
1016 */
1017 static long
1018 _ctl_getiocinfo(void __user *arg)
1019 {
1020 struct mpt2_ioctl_iocinfo karg;
1021 struct MPT2SAS_ADAPTER *ioc;
1022 u8 revision;
1023
1024 if (copy_from_user(&karg, arg, sizeof(karg))) {
1025 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1026 __FILE__, __LINE__, __func__);
1027 return -EFAULT;
1028 }
1029 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1030 return -ENODEV;
1031
1032 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1033 __func__));
1034
1035 memset(&karg, 0 , sizeof(karg));
1036 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
1037 if (ioc->pfacts)
1038 karg.port_number = ioc->pfacts[0].PortNumber;
1039 pci_read_config_byte(ioc->pdev, PCI_CLASS_REVISION, &revision);
1040 karg.hw_rev = revision;
1041 karg.pci_id = ioc->pdev->device;
1042 karg.subsystem_device = ioc->pdev->subsystem_device;
1043 karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
1044 karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
1045 karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
1046 karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
1047 karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
1048 karg.firmware_version = ioc->facts.FWVersion.Word;
1049 strcpy(karg.driver_version, MPT2SAS_DRIVER_NAME);
1050 strcat(karg.driver_version, "-");
1051 strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
1052 karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
1053
1054 if (copy_to_user(arg, &karg, sizeof(karg))) {
1055 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1056 __FILE__, __LINE__, __func__);
1057 return -EFAULT;
1058 }
1059 return 0;
1060 }
1061
1062 /**
1063 * _ctl_eventquery - main handler for MPT2EVENTQUERY opcode
1064 * @arg - user space buffer containing ioctl content
1065 */
1066 static long
1067 _ctl_eventquery(void __user *arg)
1068 {
1069 struct mpt2_ioctl_eventquery karg;
1070 struct MPT2SAS_ADAPTER *ioc;
1071
1072 if (copy_from_user(&karg, arg, sizeof(karg))) {
1073 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1074 __FILE__, __LINE__, __func__);
1075 return -EFAULT;
1076 }
1077 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1078 return -ENODEV;
1079
1080 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1081 __func__));
1082
1083 karg.event_entries = MPT2SAS_CTL_EVENT_LOG_SIZE;
1084 memcpy(karg.event_types, ioc->event_type,
1085 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1086
1087 if (copy_to_user(arg, &karg, sizeof(karg))) {
1088 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1089 __FILE__, __LINE__, __func__);
1090 return -EFAULT;
1091 }
1092 return 0;
1093 }
1094
1095 /**
1096 * _ctl_eventenable - main handler for MPT2EVENTENABLE opcode
1097 * @arg - user space buffer containing ioctl content
1098 */
1099 static long
1100 _ctl_eventenable(void __user *arg)
1101 {
1102 struct mpt2_ioctl_eventenable karg;
1103 struct MPT2SAS_ADAPTER *ioc;
1104
1105 if (copy_from_user(&karg, arg, sizeof(karg))) {
1106 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1107 __FILE__, __LINE__, __func__);
1108 return -EFAULT;
1109 }
1110 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1111 return -ENODEV;
1112
1113 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1114 __func__));
1115
1116 if (ioc->event_log)
1117 return 0;
1118 memcpy(ioc->event_type, karg.event_types,
1119 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1120 mpt2sas_base_validate_event_type(ioc, ioc->event_type);
1121
1122 /* initialize event_log */
1123 ioc->event_context = 0;
1124 ioc->aen_event_read_flag = 0;
1125 ioc->event_log = kcalloc(MPT2SAS_CTL_EVENT_LOG_SIZE,
1126 sizeof(struct MPT2_IOCTL_EVENTS), GFP_KERNEL);
1127 if (!ioc->event_log) {
1128 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1129 __FILE__, __LINE__, __func__);
1130 return -ENOMEM;
1131 }
1132 return 0;
1133 }
1134
1135 /**
1136 * _ctl_eventreport - main handler for MPT2EVENTREPORT opcode
1137 * @arg - user space buffer containing ioctl content
1138 */
1139 static long
1140 _ctl_eventreport(void __user *arg)
1141 {
1142 struct mpt2_ioctl_eventreport karg;
1143 struct MPT2SAS_ADAPTER *ioc;
1144 u32 number_bytes, max_events, max;
1145 struct mpt2_ioctl_eventreport __user *uarg = arg;
1146
1147 if (copy_from_user(&karg, arg, sizeof(karg))) {
1148 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1149 __FILE__, __LINE__, __func__);
1150 return -EFAULT;
1151 }
1152 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1153 return -ENODEV;
1154
1155 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1156 __func__));
1157
1158 number_bytes = karg.hdr.max_data_size -
1159 sizeof(struct mpt2_ioctl_header);
1160 max_events = number_bytes/sizeof(struct MPT2_IOCTL_EVENTS);
1161 max = min_t(u32, MPT2SAS_CTL_EVENT_LOG_SIZE, max_events);
1162
1163 /* If fewer than 1 event is requested, there must have
1164 * been some type of error.
1165 */
1166 if (!max || !ioc->event_log)
1167 return -ENODATA;
1168
1169 number_bytes = max * sizeof(struct MPT2_IOCTL_EVENTS);
1170 if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
1171 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1172 __FILE__, __LINE__, __func__);
1173 return -EFAULT;
1174 }
1175
1176 /* reset flag so SIGIO can restart */
1177 ioc->aen_event_read_flag = 0;
1178 return 0;
1179 }
1180
1181 /**
1182 * _ctl_do_reset - main handler for MPT2HARDRESET opcode
1183 * @arg - user space buffer containing ioctl content
1184 */
1185 static long
1186 _ctl_do_reset(void __user *arg)
1187 {
1188 struct mpt2_ioctl_diag_reset karg;
1189 struct MPT2SAS_ADAPTER *ioc;
1190 int retval;
1191
1192 if (copy_from_user(&karg, arg, sizeof(karg))) {
1193 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1194 __FILE__, __LINE__, __func__);
1195 return -EFAULT;
1196 }
1197 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1198 return -ENODEV;
1199
1200 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1201 __func__));
1202
1203 retval = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1204 FORCE_BIG_HAMMER);
1205 printk(MPT2SAS_INFO_FMT "host reset: %s\n",
1206 ioc->name, ((!retval) ? "SUCCESS" : "FAILED"));
1207 return 0;
1208 }
1209
1210 /**
1211 * _ctl_btdh_search_sas_device - searching for sas device
1212 * @ioc: per adapter object
1213 * @btdh: btdh ioctl payload
1214 */
1215 static int
1216 _ctl_btdh_search_sas_device(struct MPT2SAS_ADAPTER *ioc,
1217 struct mpt2_ioctl_btdh_mapping *btdh)
1218 {
1219 struct _sas_device *sas_device;
1220 unsigned long flags;
1221 int rc = 0;
1222
1223 if (list_empty(&ioc->sas_device_list))
1224 return rc;
1225
1226 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1227 list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
1228 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1229 btdh->handle == sas_device->handle) {
1230 btdh->bus = sas_device->channel;
1231 btdh->id = sas_device->id;
1232 rc = 1;
1233 goto out;
1234 } else if (btdh->bus == sas_device->channel && btdh->id ==
1235 sas_device->id && btdh->handle == 0xFFFF) {
1236 btdh->handle = sas_device->handle;
1237 rc = 1;
1238 goto out;
1239 }
1240 }
1241 out:
1242 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1243 return rc;
1244 }
1245
1246 /**
1247 * _ctl_btdh_search_raid_device - searching for raid device
1248 * @ioc: per adapter object
1249 * @btdh: btdh ioctl payload
1250 */
1251 static int
1252 _ctl_btdh_search_raid_device(struct MPT2SAS_ADAPTER *ioc,
1253 struct mpt2_ioctl_btdh_mapping *btdh)
1254 {
1255 struct _raid_device *raid_device;
1256 unsigned long flags;
1257 int rc = 0;
1258
1259 if (list_empty(&ioc->raid_device_list))
1260 return rc;
1261
1262 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1263 list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
1264 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1265 btdh->handle == raid_device->handle) {
1266 btdh->bus = raid_device->channel;
1267 btdh->id = raid_device->id;
1268 rc = 1;
1269 goto out;
1270 } else if (btdh->bus == raid_device->channel && btdh->id ==
1271 raid_device->id && btdh->handle == 0xFFFF) {
1272 btdh->handle = raid_device->handle;
1273 rc = 1;
1274 goto out;
1275 }
1276 }
1277 out:
1278 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1279 return rc;
1280 }
1281
1282 /**
1283 * _ctl_btdh_mapping - main handler for MPT2BTDHMAPPING opcode
1284 * @arg - user space buffer containing ioctl content
1285 */
1286 static long
1287 _ctl_btdh_mapping(void __user *arg)
1288 {
1289 struct mpt2_ioctl_btdh_mapping karg;
1290 struct MPT2SAS_ADAPTER *ioc;
1291 int rc;
1292
1293 if (copy_from_user(&karg, arg, sizeof(karg))) {
1294 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1295 __FILE__, __LINE__, __func__);
1296 return -EFAULT;
1297 }
1298 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1299 return -ENODEV;
1300
1301 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1302 __func__));
1303
1304 rc = _ctl_btdh_search_sas_device(ioc, &karg);
1305 if (!rc)
1306 _ctl_btdh_search_raid_device(ioc, &karg);
1307
1308 if (copy_to_user(arg, &karg, sizeof(karg))) {
1309 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1310 __FILE__, __LINE__, __func__);
1311 return -EFAULT;
1312 }
1313 return 0;
1314 }
1315
1316 /**
1317 * _ctl_diag_capability - return diag buffer capability
1318 * @ioc: per adapter object
1319 * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
1320 *
1321 * returns 1 when diag buffer support is enabled in firmware
1322 */
1323 static u8
1324 _ctl_diag_capability(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type)
1325 {
1326 u8 rc = 0;
1327
1328 switch (buffer_type) {
1329 case MPI2_DIAG_BUF_TYPE_TRACE:
1330 if (ioc->facts.IOCCapabilities &
1331 MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
1332 rc = 1;
1333 break;
1334 case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
1335 if (ioc->facts.IOCCapabilities &
1336 MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
1337 rc = 1;
1338 break;
1339 case MPI2_DIAG_BUF_TYPE_EXTENDED:
1340 if (ioc->facts.IOCCapabilities &
1341 MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER)
1342 rc = 1;
1343 }
1344
1345 return rc;
1346 }
1347
1348 /**
1349 * _ctl_diag_register_2 - wrapper for registering diag buffer support
1350 * @ioc: per adapter object
1351 * @diag_register: the diag_register struct passed in from user space
1352 *
1353 */
1354 static long
1355 _ctl_diag_register_2(struct MPT2SAS_ADAPTER *ioc,
1356 struct mpt2_diag_register *diag_register)
1357 {
1358 int rc, i;
1359 void *request_data = NULL;
1360 dma_addr_t request_data_dma;
1361 u32 request_data_sz = 0;
1362 Mpi2DiagBufferPostRequest_t *mpi_request;
1363 Mpi2DiagBufferPostReply_t *mpi_reply;
1364 u8 buffer_type;
1365 unsigned long timeleft;
1366 u16 smid;
1367 u16 ioc_status;
1368 u8 issue_reset = 0;
1369
1370 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1371 __func__));
1372
1373 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1374 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1375 ioc->name, __func__);
1376 rc = -EAGAIN;
1377 goto out;
1378 }
1379
1380 buffer_type = diag_register->buffer_type;
1381 if (!_ctl_diag_capability(ioc, buffer_type)) {
1382 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1383 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1384 return -EPERM;
1385 }
1386
1387 if (ioc->diag_buffer_status[buffer_type] &
1388 MPT2_DIAG_BUFFER_IS_REGISTERED) {
1389 printk(MPT2SAS_ERR_FMT "%s: already has a registered "
1390 "buffer for buffer_type(0x%02x)\n", ioc->name, __func__,
1391 buffer_type);
1392 return -EINVAL;
1393 }
1394
1395 if (diag_register->requested_buffer_size % 4) {
1396 printk(MPT2SAS_ERR_FMT "%s: the requested_buffer_size "
1397 "is not 4 byte aligned\n", ioc->name, __func__);
1398 return -EINVAL;
1399 }
1400
1401 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1402 if (!smid) {
1403 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1404 ioc->name, __func__);
1405 rc = -EAGAIN;
1406 goto out;
1407 }
1408
1409 rc = 0;
1410 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1411 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1412 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1413 ioc->ctl_cmds.smid = smid;
1414
1415 request_data = ioc->diag_buffer[buffer_type];
1416 request_data_sz = diag_register->requested_buffer_size;
1417 ioc->unique_id[buffer_type] = diag_register->unique_id;
1418 ioc->diag_buffer_status[buffer_type] = 0;
1419 memcpy(ioc->product_specific[buffer_type],
1420 diag_register->product_specific, MPT2_PRODUCT_SPECIFIC_DWORDS);
1421 ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags;
1422
1423 if (request_data) {
1424 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1425 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
1426 pci_free_consistent(ioc->pdev,
1427 ioc->diag_buffer_sz[buffer_type],
1428 request_data, request_data_dma);
1429 request_data = NULL;
1430 }
1431 }
1432
1433 if (request_data == NULL) {
1434 ioc->diag_buffer_sz[buffer_type] = 0;
1435 ioc->diag_buffer_dma[buffer_type] = 0;
1436 request_data = pci_alloc_consistent(
1437 ioc->pdev, request_data_sz, &request_data_dma);
1438 if (request_data == NULL) {
1439 printk(MPT2SAS_ERR_FMT "%s: failed allocating memory"
1440 " for diag buffers, requested size(%d)\n",
1441 ioc->name, __func__, request_data_sz);
1442 mpt2sas_base_free_smid(ioc, smid);
1443 return -ENOMEM;
1444 }
1445 ioc->diag_buffer[buffer_type] = request_data;
1446 ioc->diag_buffer_sz[buffer_type] = request_data_sz;
1447 ioc->diag_buffer_dma[buffer_type] = request_data_dma;
1448 }
1449
1450 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1451 mpi_request->BufferType = diag_register->buffer_type;
1452 mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags);
1453 mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
1454 mpi_request->BufferLength = cpu_to_le32(request_data_sz);
1455 mpi_request->VF_ID = 0; /* TODO */
1456 mpi_request->VP_ID = 0;
1457
1458 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: diag_buffer(0x%p), "
1459 "dma(0x%llx), sz(%d)\n", ioc->name, __func__, request_data,
1460 (unsigned long long)request_data_dma,
1461 le32_to_cpu(mpi_request->BufferLength)));
1462
1463 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1464 mpi_request->ProductSpecific[i] =
1465 cpu_to_le32(ioc->product_specific[buffer_type][i]);
1466
1467 mpt2sas_base_put_smid_default(ioc, smid);
1468 init_completion(&ioc->ctl_cmds.done);
1469 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1470 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1471
1472 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1473 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1474 __func__);
1475 _debug_dump_mf(mpi_request,
1476 sizeof(Mpi2DiagBufferPostRequest_t)/4);
1477 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1478 issue_reset = 1;
1479 goto issue_host_reset;
1480 }
1481
1482 /* process the completed Reply Message Frame */
1483 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1484 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1485 ioc->name, __func__);
1486 rc = -EFAULT;
1487 goto out;
1488 }
1489
1490 mpi_reply = ioc->ctl_cmds.reply;
1491 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1492
1493 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1494 ioc->diag_buffer_status[buffer_type] |=
1495 MPT2_DIAG_BUFFER_IS_REGISTERED;
1496 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
1497 ioc->name, __func__));
1498 } else {
1499 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
1500 "log_info(0x%08x)\n", ioc->name, __func__,
1501 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1502 rc = -EFAULT;
1503 }
1504
1505 issue_host_reset:
1506 if (issue_reset)
1507 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1508 FORCE_BIG_HAMMER);
1509
1510 out:
1511
1512 if (rc && request_data)
1513 pci_free_consistent(ioc->pdev, request_data_sz,
1514 request_data, request_data_dma);
1515
1516 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1517 return rc;
1518 }
1519
1520 /**
1521 * mpt2sas_enable_diag_buffer - enabling diag_buffers support driver load time
1522 * @ioc: per adapter object
1523 * @bits_to_register: bitwise field where trace is bit 0, and snapshot is bit 1
1524 *
1525 * This is called when command line option diag_buffer_enable is enabled
1526 * at driver load time.
1527 */
1528 void
1529 mpt2sas_enable_diag_buffer(struct MPT2SAS_ADAPTER *ioc, u8 bits_to_register)
1530 {
1531 struct mpt2_diag_register diag_register;
1532
1533 memset(&diag_register, 0, sizeof(struct mpt2_diag_register));
1534
1535 if (bits_to_register & 1) {
1536 printk(MPT2SAS_INFO_FMT "registering trace buffer support\n",
1537 ioc->name);
1538 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
1539 /* register for 1MB buffers */
1540 diag_register.requested_buffer_size = (1024 * 1024);
1541 diag_register.unique_id = 0x7075900;
1542 _ctl_diag_register_2(ioc, &diag_register);
1543 }
1544
1545 if (bits_to_register & 2) {
1546 printk(MPT2SAS_INFO_FMT "registering snapshot buffer support\n",
1547 ioc->name);
1548 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT;
1549 /* register for 2MB buffers */
1550 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1551 diag_register.unique_id = 0x7075901;
1552 _ctl_diag_register_2(ioc, &diag_register);
1553 }
1554
1555 if (bits_to_register & 4) {
1556 printk(MPT2SAS_INFO_FMT "registering extended buffer support\n",
1557 ioc->name);
1558 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_EXTENDED;
1559 /* register for 2MB buffers */
1560 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1561 diag_register.unique_id = 0x7075901;
1562 _ctl_diag_register_2(ioc, &diag_register);
1563 }
1564 }
1565
1566 /**
1567 * _ctl_diag_register - application register with driver
1568 * @arg - user space buffer containing ioctl content
1569 * @state - NON_BLOCKING or BLOCKING
1570 *
1571 * This will allow the driver to setup any required buffers that will be
1572 * needed by firmware to communicate with the driver.
1573 */
1574 static long
1575 _ctl_diag_register(void __user *arg, enum block_state state)
1576 {
1577 struct mpt2_diag_register karg;
1578 struct MPT2SAS_ADAPTER *ioc;
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 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1587 return -ENODEV;
1588
1589 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1590 return -EAGAIN;
1591 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1592 return -ERESTARTSYS;
1593 rc = _ctl_diag_register_2(ioc, &karg);
1594 mutex_unlock(&ioc->ctl_cmds.mutex);
1595 return rc;
1596 }
1597
1598 /**
1599 * _ctl_diag_unregister - application unregister with driver
1600 * @arg - user space buffer containing ioctl content
1601 *
1602 * This will allow the driver to cleanup any memory allocated for diag
1603 * messages and to free up any resources.
1604 */
1605 static long
1606 _ctl_diag_unregister(void __user *arg)
1607 {
1608 struct mpt2_diag_unregister karg;
1609 struct MPT2SAS_ADAPTER *ioc;
1610 void *request_data;
1611 dma_addr_t request_data_dma;
1612 u32 request_data_sz;
1613 u8 buffer_type;
1614
1615 if (copy_from_user(&karg, arg, sizeof(karg))) {
1616 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1617 __FILE__, __LINE__, __func__);
1618 return -EFAULT;
1619 }
1620 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1621 return -ENODEV;
1622
1623 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1624 __func__));
1625
1626 buffer_type = karg.unique_id & 0x000000ff;
1627 if (!_ctl_diag_capability(ioc, buffer_type)) {
1628 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1629 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1630 return -EPERM;
1631 }
1632
1633 if ((ioc->diag_buffer_status[buffer_type] &
1634 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1635 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1636 "registered\n", ioc->name, __func__, buffer_type);
1637 return -EINVAL;
1638 }
1639 if ((ioc->diag_buffer_status[buffer_type] &
1640 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
1641 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) has not been "
1642 "released\n", ioc->name, __func__, buffer_type);
1643 return -EINVAL;
1644 }
1645
1646 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1647 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1648 "registered\n", ioc->name, __func__, karg.unique_id);
1649 return -EINVAL;
1650 }
1651
1652 request_data = ioc->diag_buffer[buffer_type];
1653 if (!request_data) {
1654 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1655 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1656 return -ENOMEM;
1657 }
1658
1659 request_data_sz = ioc->diag_buffer_sz[buffer_type];
1660 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1661 pci_free_consistent(ioc->pdev, request_data_sz,
1662 request_data, request_data_dma);
1663 ioc->diag_buffer[buffer_type] = NULL;
1664 ioc->diag_buffer_status[buffer_type] = 0;
1665 return 0;
1666 }
1667
1668 /**
1669 * _ctl_diag_query - query relevant info associated with diag buffers
1670 * @arg - user space buffer containing ioctl content
1671 *
1672 * The application will send only buffer_type and unique_id. Driver will
1673 * inspect unique_id first, if valid, fill in all the info. If unique_id is
1674 * 0x00, the driver will return info specified by Buffer Type.
1675 */
1676 static long
1677 _ctl_diag_query(void __user *arg)
1678 {
1679 struct mpt2_diag_query karg;
1680 struct MPT2SAS_ADAPTER *ioc;
1681 void *request_data;
1682 int i;
1683 u8 buffer_type;
1684
1685 if (copy_from_user(&karg, arg, sizeof(karg))) {
1686 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1687 __FILE__, __LINE__, __func__);
1688 return -EFAULT;
1689 }
1690 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1691 return -ENODEV;
1692
1693 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1694 __func__));
1695
1696 karg.application_flags = 0;
1697 buffer_type = karg.buffer_type;
1698
1699 if (!_ctl_diag_capability(ioc, buffer_type)) {
1700 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1701 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1702 return -EPERM;
1703 }
1704
1705 if ((ioc->diag_buffer_status[buffer_type] &
1706 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1707 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1708 "registered\n", ioc->name, __func__, buffer_type);
1709 return -EINVAL;
1710 }
1711
1712 if (karg.unique_id & 0xffffff00) {
1713 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1714 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1715 "registered\n", ioc->name, __func__,
1716 karg.unique_id);
1717 return -EINVAL;
1718 }
1719 }
1720
1721 request_data = ioc->diag_buffer[buffer_type];
1722 if (!request_data) {
1723 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1724 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1725 return -ENOMEM;
1726 }
1727
1728 if (ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_RELEASED)
1729 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1730 MPT2_APP_FLAGS_BUFFER_VALID);
1731 else
1732 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1733 MPT2_APP_FLAGS_BUFFER_VALID |
1734 MPT2_APP_FLAGS_FW_BUFFER_ACCESS);
1735
1736 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1737 karg.product_specific[i] =
1738 ioc->product_specific[buffer_type][i];
1739
1740 karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
1741 karg.driver_added_buffer_size = 0;
1742 karg.unique_id = ioc->unique_id[buffer_type];
1743 karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];
1744
1745 if (copy_to_user(arg, &karg, sizeof(struct mpt2_diag_query))) {
1746 printk(MPT2SAS_ERR_FMT "%s: unable to write mpt2_diag_query "
1747 "data @ %p\n", ioc->name, __func__, arg);
1748 return -EFAULT;
1749 }
1750 return 0;
1751 }
1752
1753 /**
1754 * _ctl_send_release - Diag Release Message
1755 * @ioc: per adapter object
1756 * @buffer_type - specifies either TRACE, SNAPSHOT, or EXTENDED
1757 * @issue_reset - specifies whether host reset is required.
1758 *
1759 */
1760 static int
1761 _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type, u8 *issue_reset)
1762 {
1763 Mpi2DiagReleaseRequest_t *mpi_request;
1764 Mpi2DiagReleaseReply_t *mpi_reply;
1765 u16 smid;
1766 u16 ioc_status;
1767 u32 ioc_state;
1768 int rc;
1769 unsigned long timeleft;
1770
1771 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1772 __func__));
1773
1774 rc = 0;
1775 *issue_reset = 0;
1776
1777 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1778 if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1779 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
1780 "skipping due to FAULT state\n", ioc->name,
1781 __func__));
1782 rc = -EAGAIN;
1783 goto out;
1784 }
1785
1786 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1787 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1788 ioc->name, __func__);
1789 rc = -EAGAIN;
1790 goto out;
1791 }
1792
1793 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1794 if (!smid) {
1795 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1796 ioc->name, __func__);
1797 rc = -EAGAIN;
1798 goto out;
1799 }
1800
1801 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1802 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1803 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1804 ioc->ctl_cmds.smid = smid;
1805
1806 mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
1807 mpi_request->BufferType = buffer_type;
1808 mpi_request->VF_ID = 0; /* TODO */
1809 mpi_request->VP_ID = 0;
1810
1811 mpt2sas_base_put_smid_default(ioc, smid);
1812 init_completion(&ioc->ctl_cmds.done);
1813 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1814 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1815
1816 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1817 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1818 __func__);
1819 _debug_dump_mf(mpi_request,
1820 sizeof(Mpi2DiagReleaseRequest_t)/4);
1821 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1822 *issue_reset = 1;
1823 rc = -EFAULT;
1824 goto out;
1825 }
1826
1827 /* process the completed Reply Message Frame */
1828 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1829 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1830 ioc->name, __func__);
1831 rc = -EFAULT;
1832 goto out;
1833 }
1834
1835 mpi_reply = ioc->ctl_cmds.reply;
1836 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1837
1838 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1839 ioc->diag_buffer_status[buffer_type] |=
1840 MPT2_DIAG_BUFFER_IS_RELEASED;
1841 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
1842 ioc->name, __func__));
1843 } else {
1844 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
1845 "log_info(0x%08x)\n", ioc->name, __func__,
1846 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1847 rc = -EFAULT;
1848 }
1849
1850 out:
1851 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1852 return rc;
1853 }
1854
1855 /**
1856 * _ctl_diag_release - request to send Diag Release Message to firmware
1857 * @arg - user space buffer containing ioctl content
1858 * @state - NON_BLOCKING or BLOCKING
1859 *
1860 * This allows ownership of the specified buffer to returned to the driver,
1861 * allowing an application to read the buffer without fear that firmware is
1862 * overwritting information in the buffer.
1863 */
1864 static long
1865 _ctl_diag_release(void __user *arg, enum block_state state)
1866 {
1867 struct mpt2_diag_release karg;
1868 struct MPT2SAS_ADAPTER *ioc;
1869 void *request_data;
1870 int rc;
1871 u8 buffer_type;
1872 u8 issue_reset = 0;
1873
1874 if (copy_from_user(&karg, arg, sizeof(karg))) {
1875 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1876 __FILE__, __LINE__, __func__);
1877 return -EFAULT;
1878 }
1879 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1880 return -ENODEV;
1881
1882 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1883 __func__));
1884
1885 buffer_type = karg.unique_id & 0x000000ff;
1886 if (!_ctl_diag_capability(ioc, buffer_type)) {
1887 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1888 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1889 return -EPERM;
1890 }
1891
1892 if ((ioc->diag_buffer_status[buffer_type] &
1893 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1894 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1895 "registered\n", ioc->name, __func__, buffer_type);
1896 return -EINVAL;
1897 }
1898
1899 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1900 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1901 "registered\n", ioc->name, __func__, karg.unique_id);
1902 return -EINVAL;
1903 }
1904
1905 if (ioc->diag_buffer_status[buffer_type] &
1906 MPT2_DIAG_BUFFER_IS_RELEASED) {
1907 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1908 "is already released\n", ioc->name, __func__,
1909 buffer_type);
1910 return 0;
1911 }
1912
1913 request_data = ioc->diag_buffer[buffer_type];
1914
1915 if (!request_data) {
1916 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1917 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1918 return -ENOMEM;
1919 }
1920
1921 /* buffers were released by due to host reset */
1922 if ((ioc->diag_buffer_status[buffer_type] &
1923 MPT2_DIAG_BUFFER_IS_DIAG_RESET)) {
1924 ioc->diag_buffer_status[buffer_type] |=
1925 MPT2_DIAG_BUFFER_IS_RELEASED;
1926 ioc->diag_buffer_status[buffer_type] &=
1927 ~MPT2_DIAG_BUFFER_IS_DIAG_RESET;
1928 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1929 "was released due to host reset\n", ioc->name, __func__,
1930 buffer_type);
1931 return 0;
1932 }
1933
1934 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1935 return -EAGAIN;
1936 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1937 return -ERESTARTSYS;
1938
1939 rc = _ctl_send_release(ioc, buffer_type, &issue_reset);
1940
1941 if (issue_reset)
1942 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1943 FORCE_BIG_HAMMER);
1944
1945 mutex_unlock(&ioc->ctl_cmds.mutex);
1946 return rc;
1947 }
1948
1949 /**
1950 * _ctl_diag_read_buffer - request for copy of the diag buffer
1951 * @arg - user space buffer containing ioctl content
1952 * @state - NON_BLOCKING or BLOCKING
1953 */
1954 static long
1955 _ctl_diag_read_buffer(void __user *arg, enum block_state state)
1956 {
1957 struct mpt2_diag_read_buffer karg;
1958 struct mpt2_diag_read_buffer __user *uarg = arg;
1959 struct MPT2SAS_ADAPTER *ioc;
1960 void *request_data, *diag_data;
1961 Mpi2DiagBufferPostRequest_t *mpi_request;
1962 Mpi2DiagBufferPostReply_t *mpi_reply;
1963 int rc, i;
1964 u8 buffer_type;
1965 unsigned long timeleft;
1966 u16 smid;
1967 u16 ioc_status;
1968 u8 issue_reset = 0;
1969
1970 if (copy_from_user(&karg, arg, sizeof(karg))) {
1971 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1972 __FILE__, __LINE__, __func__);
1973 return -EFAULT;
1974 }
1975 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1976 return -ENODEV;
1977
1978 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1979 __func__));
1980
1981 buffer_type = karg.unique_id & 0x000000ff;
1982 if (!_ctl_diag_capability(ioc, buffer_type)) {
1983 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1984 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1985 return -EPERM;
1986 }
1987
1988 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1989 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1990 "registered\n", ioc->name, __func__, karg.unique_id);
1991 return -EINVAL;
1992 }
1993
1994 request_data = ioc->diag_buffer[buffer_type];
1995 if (!request_data) {
1996 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1997 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1998 return -ENOMEM;
1999 }
2000
2001 if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
2002 printk(MPT2SAS_ERR_FMT "%s: either the starting_offset "
2003 "or bytes_to_read are not 4 byte aligned\n", ioc->name,
2004 __func__);
2005 return -EINVAL;
2006 }
2007
2008 diag_data = (void *)(request_data + karg.starting_offset);
2009 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: diag_buffer(%p), "
2010 "offset(%d), sz(%d)\n", ioc->name, __func__,
2011 diag_data, karg.starting_offset, karg.bytes_to_read));
2012
2013 if (copy_to_user((void __user *)uarg->diagnostic_data,
2014 diag_data, karg.bytes_to_read)) {
2015 printk(MPT2SAS_ERR_FMT "%s: Unable to write "
2016 "mpt_diag_read_buffer_t data @ %p\n", ioc->name,
2017 __func__, diag_data);
2018 return -EFAULT;
2019 }
2020
2021 if ((karg.flags & MPT2_FLAGS_REREGISTER) == 0)
2022 return 0;
2023
2024 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: Reregister "
2025 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type));
2026 if ((ioc->diag_buffer_status[buffer_type] &
2027 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
2028 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2029 "buffer_type(0x%02x) is still registered\n", ioc->name,
2030 __func__, buffer_type));
2031 return 0;
2032 }
2033 /* Get a free request frame and save the message context.
2034 */
2035 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
2036 return -EAGAIN;
2037 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
2038 return -ERESTARTSYS;
2039
2040 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
2041 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
2042 ioc->name, __func__);
2043 rc = -EAGAIN;
2044 goto out;
2045 }
2046
2047 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
2048 if (!smid) {
2049 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2050 ioc->name, __func__);
2051 rc = -EAGAIN;
2052 goto out;
2053 }
2054
2055 rc = 0;
2056 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
2057 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
2058 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
2059 ioc->ctl_cmds.smid = smid;
2060
2061 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
2062 mpi_request->BufferType = buffer_type;
2063 mpi_request->BufferLength =
2064 cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
2065 mpi_request->BufferAddress =
2066 cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
2067 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
2068 mpi_request->ProductSpecific[i] =
2069 cpu_to_le32(ioc->product_specific[buffer_type][i]);
2070 mpi_request->VF_ID = 0; /* TODO */
2071 mpi_request->VP_ID = 0;
2072
2073 mpt2sas_base_put_smid_default(ioc, smid);
2074 init_completion(&ioc->ctl_cmds.done);
2075 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
2076 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
2077
2078 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
2079 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
2080 __func__);
2081 _debug_dump_mf(mpi_request,
2082 sizeof(Mpi2DiagBufferPostRequest_t)/4);
2083 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
2084 issue_reset = 1;
2085 goto issue_host_reset;
2086 }
2087
2088 /* process the completed Reply Message Frame */
2089 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
2090 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
2091 ioc->name, __func__);
2092 rc = -EFAULT;
2093 goto out;
2094 }
2095
2096 mpi_reply = ioc->ctl_cmds.reply;
2097 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
2098
2099 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
2100 ioc->diag_buffer_status[buffer_type] |=
2101 MPT2_DIAG_BUFFER_IS_REGISTERED;
2102 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
2103 ioc->name, __func__));
2104 } else {
2105 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
2106 "log_info(0x%08x)\n", ioc->name, __func__,
2107 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
2108 rc = -EFAULT;
2109 }
2110
2111 issue_host_reset:
2112 if (issue_reset)
2113 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2114 FORCE_BIG_HAMMER);
2115
2116 out:
2117
2118 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
2119 mutex_unlock(&ioc->ctl_cmds.mutex);
2120 return rc;
2121 }
2122
2123 /**
2124 * _ctl_ioctl_main - main ioctl entry point
2125 * @file - (struct file)
2126 * @cmd - ioctl opcode
2127 * @arg -
2128 */
2129 static long
2130 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg)
2131 {
2132 enum block_state state;
2133 long ret = -EINVAL;
2134
2135 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING :
2136 BLOCKING;
2137
2138 switch (cmd) {
2139 case MPT2IOCINFO:
2140 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_iocinfo))
2141 ret = _ctl_getiocinfo(arg);
2142 break;
2143 case MPT2COMMAND:
2144 {
2145 struct mpt2_ioctl_command karg;
2146 struct mpt2_ioctl_command __user *uarg;
2147 struct MPT2SAS_ADAPTER *ioc;
2148
2149 if (copy_from_user(&karg, arg, sizeof(karg))) {
2150 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2151 __FILE__, __LINE__, __func__);
2152 return -EFAULT;
2153 }
2154
2155 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
2156 !ioc)
2157 return -ENODEV;
2158
2159 if (ioc->shost_recovery || ioc->pci_error_recovery)
2160 return -EAGAIN;
2161
2162 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_command)) {
2163 uarg = arg;
2164 ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
2165 }
2166 break;
2167 }
2168 case MPT2EVENTQUERY:
2169 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventquery))
2170 ret = _ctl_eventquery(arg);
2171 break;
2172 case MPT2EVENTENABLE:
2173 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventenable))
2174 ret = _ctl_eventenable(arg);
2175 break;
2176 case MPT2EVENTREPORT:
2177 ret = _ctl_eventreport(arg);
2178 break;
2179 case MPT2HARDRESET:
2180 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_diag_reset))
2181 ret = _ctl_do_reset(arg);
2182 break;
2183 case MPT2BTDHMAPPING:
2184 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_btdh_mapping))
2185 ret = _ctl_btdh_mapping(arg);
2186 break;
2187 case MPT2DIAGREGISTER:
2188 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_register))
2189 ret = _ctl_diag_register(arg, state);
2190 break;
2191 case MPT2DIAGUNREGISTER:
2192 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_unregister))
2193 ret = _ctl_diag_unregister(arg);
2194 break;
2195 case MPT2DIAGQUERY:
2196 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_query))
2197 ret = _ctl_diag_query(arg);
2198 break;
2199 case MPT2DIAGRELEASE:
2200 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_release))
2201 ret = _ctl_diag_release(arg, state);
2202 break;
2203 case MPT2DIAGREADBUFFER:
2204 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_read_buffer))
2205 ret = _ctl_diag_read_buffer(arg, state);
2206 break;
2207 default:
2208 {
2209 struct mpt2_ioctl_command karg;
2210 struct MPT2SAS_ADAPTER *ioc;
2211
2212 if (copy_from_user(&karg, arg, sizeof(karg))) {
2213 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2214 __FILE__, __LINE__, __func__);
2215 return -EFAULT;
2216 }
2217
2218 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
2219 !ioc)
2220 return -ENODEV;
2221
2222 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT
2223 "unsupported ioctl opcode(0x%08x)\n", ioc->name, cmd));
2224 break;
2225 }
2226 }
2227 return ret;
2228 }
2229
2230 /**
2231 * _ctl_ioctl - main ioctl entry point (unlocked)
2232 * @file - (struct file)
2233 * @cmd - ioctl opcode
2234 * @arg -
2235 */
2236 static long
2237 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2238 {
2239 long ret;
2240
2241 lock_kernel();
2242 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
2243 unlock_kernel();
2244 return ret;
2245 }
2246
2247 #ifdef CONFIG_COMPAT
2248 /**
2249 * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
2250 * @file - (struct file)
2251 * @cmd - ioctl opcode
2252 * @arg - (struct mpt2_ioctl_command32)
2253 *
2254 * MPT2COMMAND32 - Handle 32bit applications running on 64bit os.
2255 */
2256 static long
2257 _ctl_compat_mpt_command(struct file *file, unsigned cmd, unsigned long arg)
2258 {
2259 struct mpt2_ioctl_command32 karg32;
2260 struct mpt2_ioctl_command32 __user *uarg;
2261 struct mpt2_ioctl_command karg;
2262 struct MPT2SAS_ADAPTER *ioc;
2263 enum block_state state;
2264
2265 if (_IOC_SIZE(cmd) != sizeof(struct mpt2_ioctl_command32))
2266 return -EINVAL;
2267
2268 uarg = (struct mpt2_ioctl_command32 __user *) arg;
2269
2270 if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
2271 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2272 __FILE__, __LINE__, __func__);
2273 return -EFAULT;
2274 }
2275 if (_ctl_verify_adapter(karg32.hdr.ioc_number, &ioc) == -1 || !ioc)
2276 return -ENODEV;
2277
2278 if (ioc->shost_recovery || ioc->pci_error_recovery)
2279 return -EAGAIN;
2280
2281 memset(&karg, 0, sizeof(struct mpt2_ioctl_command));
2282 karg.hdr.ioc_number = karg32.hdr.ioc_number;
2283 karg.hdr.port_number = karg32.hdr.port_number;
2284 karg.hdr.max_data_size = karg32.hdr.max_data_size;
2285 karg.timeout = karg32.timeout;
2286 karg.max_reply_bytes = karg32.max_reply_bytes;
2287 karg.data_in_size = karg32.data_in_size;
2288 karg.data_out_size = karg32.data_out_size;
2289 karg.max_sense_bytes = karg32.max_sense_bytes;
2290 karg.data_sge_offset = karg32.data_sge_offset;
2291 karg.reply_frame_buf_ptr = compat_ptr(karg32.reply_frame_buf_ptr);
2292 karg.data_in_buf_ptr = compat_ptr(karg32.data_in_buf_ptr);
2293 karg.data_out_buf_ptr = compat_ptr(karg32.data_out_buf_ptr);
2294 karg.sense_data_ptr = compat_ptr(karg32.sense_data_ptr);
2295 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
2296 return _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
2297 }
2298
2299 /**
2300 * _ctl_ioctl_compat - main ioctl entry point (compat)
2301 * @file -
2302 * @cmd -
2303 * @arg -
2304 *
2305 * This routine handles 32 bit applications in 64bit os.
2306 */
2307 static long
2308 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2309 {
2310 long ret;
2311
2312 lock_kernel();
2313 if (cmd == MPT2COMMAND32)
2314 ret = _ctl_compat_mpt_command(file, cmd, arg);
2315 else
2316 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
2317 unlock_kernel();
2318 return ret;
2319 }
2320 #endif
2321
2322 /* scsi host attributes */
2323
2324 /**
2325 * _ctl_version_fw_show - firmware version
2326 * @cdev - pointer to embedded class device
2327 * @buf - the buffer returned
2328 *
2329 * A sysfs 'read-only' shost attribute.
2330 */
2331 static ssize_t
2332 _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr,
2333 char *buf)
2334 {
2335 struct Scsi_Host *shost = class_to_shost(cdev);
2336 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2337
2338 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2339 (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2340 (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2341 (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2342 ioc->facts.FWVersion.Word & 0x000000FF);
2343 }
2344 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL);
2345
2346 /**
2347 * _ctl_version_bios_show - bios version
2348 * @cdev - pointer to embedded class device
2349 * @buf - the buffer returned
2350 *
2351 * A sysfs 'read-only' shost attribute.
2352 */
2353 static ssize_t
2354 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr,
2355 char *buf)
2356 {
2357 struct Scsi_Host *shost = class_to_shost(cdev);
2358 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2359
2360 u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2361
2362 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2363 (version & 0xFF000000) >> 24,
2364 (version & 0x00FF0000) >> 16,
2365 (version & 0x0000FF00) >> 8,
2366 version & 0x000000FF);
2367 }
2368 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL);
2369
2370 /**
2371 * _ctl_version_mpi_show - MPI (message passing interface) version
2372 * @cdev - pointer to embedded class device
2373 * @buf - the buffer returned
2374 *
2375 * A sysfs 'read-only' shost attribute.
2376 */
2377 static ssize_t
2378 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr,
2379 char *buf)
2380 {
2381 struct Scsi_Host *shost = class_to_shost(cdev);
2382 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2383
2384 return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
2385 ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
2386 }
2387 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL);
2388
2389 /**
2390 * _ctl_version_product_show - product name
2391 * @cdev - pointer to embedded class device
2392 * @buf - the buffer returned
2393 *
2394 * A sysfs 'read-only' shost attribute.
2395 */
2396 static ssize_t
2397 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr,
2398 char *buf)
2399 {
2400 struct Scsi_Host *shost = class_to_shost(cdev);
2401 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2402
2403 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
2404 }
2405 static DEVICE_ATTR(version_product, S_IRUGO,
2406 _ctl_version_product_show, NULL);
2407
2408 /**
2409 * _ctl_version_nvdata_persistent_show - ndvata persistent version
2410 * @cdev - pointer to embedded class device
2411 * @buf - the buffer returned
2412 *
2413 * A sysfs 'read-only' shost attribute.
2414 */
2415 static ssize_t
2416 _ctl_version_nvdata_persistent_show(struct device *cdev,
2417 struct device_attribute *attr, char *buf)
2418 {
2419 struct Scsi_Host *shost = class_to_shost(cdev);
2420 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2421
2422 return snprintf(buf, PAGE_SIZE, "%08xh\n",
2423 le32_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
2424 }
2425 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
2426 _ctl_version_nvdata_persistent_show, NULL);
2427
2428 /**
2429 * _ctl_version_nvdata_default_show - nvdata default version
2430 * @cdev - pointer to embedded class device
2431 * @buf - the buffer returned
2432 *
2433 * A sysfs 'read-only' shost attribute.
2434 */
2435 static ssize_t
2436 _ctl_version_nvdata_default_show(struct device *cdev,
2437 struct device_attribute *attr, char *buf)
2438 {
2439 struct Scsi_Host *shost = class_to_shost(cdev);
2440 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2441
2442 return snprintf(buf, PAGE_SIZE, "%08xh\n",
2443 le32_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
2444 }
2445 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
2446 _ctl_version_nvdata_default_show, NULL);
2447
2448 /**
2449 * _ctl_board_name_show - board name
2450 * @cdev - pointer to embedded class device
2451 * @buf - the buffer returned
2452 *
2453 * A sysfs 'read-only' shost attribute.
2454 */
2455 static ssize_t
2456 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr,
2457 char *buf)
2458 {
2459 struct Scsi_Host *shost = class_to_shost(cdev);
2460 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2461
2462 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
2463 }
2464 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL);
2465
2466 /**
2467 * _ctl_board_assembly_show - board assembly name
2468 * @cdev - pointer to embedded class device
2469 * @buf - the buffer returned
2470 *
2471 * A sysfs 'read-only' shost attribute.
2472 */
2473 static ssize_t
2474 _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr,
2475 char *buf)
2476 {
2477 struct Scsi_Host *shost = class_to_shost(cdev);
2478 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2479
2480 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
2481 }
2482 static DEVICE_ATTR(board_assembly, S_IRUGO,
2483 _ctl_board_assembly_show, NULL);
2484
2485 /**
2486 * _ctl_board_tracer_show - board tracer number
2487 * @cdev - pointer to embedded class device
2488 * @buf - the buffer returned
2489 *
2490 * A sysfs 'read-only' shost attribute.
2491 */
2492 static ssize_t
2493 _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr,
2494 char *buf)
2495 {
2496 struct Scsi_Host *shost = class_to_shost(cdev);
2497 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2498
2499 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
2500 }
2501 static DEVICE_ATTR(board_tracer, S_IRUGO,
2502 _ctl_board_tracer_show, NULL);
2503
2504 /**
2505 * _ctl_io_delay_show - io missing delay
2506 * @cdev - pointer to embedded class device
2507 * @buf - the buffer returned
2508 *
2509 * This is for firmware implemention for deboucing device
2510 * removal events.
2511 *
2512 * A sysfs 'read-only' shost attribute.
2513 */
2514 static ssize_t
2515 _ctl_io_delay_show(struct device *cdev, struct device_attribute *attr,
2516 char *buf)
2517 {
2518 struct Scsi_Host *shost = class_to_shost(cdev);
2519 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2520
2521 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
2522 }
2523 static DEVICE_ATTR(io_delay, S_IRUGO,
2524 _ctl_io_delay_show, NULL);
2525
2526 /**
2527 * _ctl_device_delay_show - device missing delay
2528 * @cdev - pointer to embedded class device
2529 * @buf - the buffer returned
2530 *
2531 * This is for firmware implemention for deboucing device
2532 * removal events.
2533 *
2534 * A sysfs 'read-only' shost attribute.
2535 */
2536 static ssize_t
2537 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr,
2538 char *buf)
2539 {
2540 struct Scsi_Host *shost = class_to_shost(cdev);
2541 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2542
2543 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
2544 }
2545 static DEVICE_ATTR(device_delay, S_IRUGO,
2546 _ctl_device_delay_show, NULL);
2547
2548 /**
2549 * _ctl_fw_queue_depth_show - global credits
2550 * @cdev - pointer to embedded class device
2551 * @buf - the buffer returned
2552 *
2553 * This is firmware queue depth limit
2554 *
2555 * A sysfs 'read-only' shost attribute.
2556 */
2557 static ssize_t
2558 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
2559 char *buf)
2560 {
2561 struct Scsi_Host *shost = class_to_shost(cdev);
2562 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2563
2564 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
2565 }
2566 static DEVICE_ATTR(fw_queue_depth, S_IRUGO,
2567 _ctl_fw_queue_depth_show, NULL);
2568
2569 /**
2570 * _ctl_sas_address_show - sas address
2571 * @cdev - pointer to embedded class device
2572 * @buf - the buffer returned
2573 *
2574 * This is the controller sas address
2575 *
2576 * A sysfs 'read-only' shost attribute.
2577 */
2578 static ssize_t
2579 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr,
2580 char *buf)
2581 {
2582 struct Scsi_Host *shost = class_to_shost(cdev);
2583 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2584
2585 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2586 (unsigned long long)ioc->sas_hba.sas_address);
2587 }
2588 static DEVICE_ATTR(host_sas_address, S_IRUGO,
2589 _ctl_host_sas_address_show, NULL);
2590
2591 /**
2592 * _ctl_logging_level_show - logging level
2593 * @cdev - pointer to embedded class device
2594 * @buf - the buffer returned
2595 *
2596 * A sysfs 'read/write' shost attribute.
2597 */
2598 static ssize_t
2599 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr,
2600 char *buf)
2601 {
2602 struct Scsi_Host *shost = class_to_shost(cdev);
2603 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2604
2605 return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
2606 }
2607 static ssize_t
2608 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr,
2609 const char *buf, size_t count)
2610 {
2611 struct Scsi_Host *shost = class_to_shost(cdev);
2612 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2613 int val = 0;
2614
2615 if (sscanf(buf, "%x", &val) != 1)
2616 return -EINVAL;
2617
2618 ioc->logging_level = val;
2619 printk(MPT2SAS_INFO_FMT "logging_level=%08xh\n", ioc->name,
2620 ioc->logging_level);
2621 return strlen(buf);
2622 }
2623 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
2624 _ctl_logging_level_show, _ctl_logging_level_store);
2625
2626 /* device attributes */
2627 /*
2628 * _ctl_fwfault_debug_show - show/store fwfault_debug
2629 * @cdev - pointer to embedded class device
2630 * @buf - the buffer returned
2631 *
2632 * mpt2sas_fwfault_debug is command line option
2633 * A sysfs 'read/write' shost attribute.
2634 */
2635 static ssize_t
2636 _ctl_fwfault_debug_show(struct device *cdev,
2637 struct device_attribute *attr, char *buf)
2638 {
2639 struct Scsi_Host *shost = class_to_shost(cdev);
2640 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2641
2642 return snprintf(buf, PAGE_SIZE, "%d\n", ioc->fwfault_debug);
2643 }
2644 static ssize_t
2645 _ctl_fwfault_debug_store(struct device *cdev,
2646 struct device_attribute *attr, const char *buf, size_t count)
2647 {
2648 struct Scsi_Host *shost = class_to_shost(cdev);
2649 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2650 int val = 0;
2651
2652 if (sscanf(buf, "%d", &val) != 1)
2653 return -EINVAL;
2654
2655 ioc->fwfault_debug = val;
2656 printk(MPT2SAS_INFO_FMT "fwfault_debug=%d\n", ioc->name,
2657 ioc->fwfault_debug);
2658 return strlen(buf);
2659 }
2660 static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR,
2661 _ctl_fwfault_debug_show, _ctl_fwfault_debug_store);
2662
2663
2664 /**
2665 * _ctl_ioc_reset_count_show - ioc reset count
2666 * @cdev - pointer to embedded class device
2667 * @buf - the buffer returned
2668 *
2669 * This is firmware queue depth limit
2670 *
2671 * A sysfs 'read-only' shost attribute.
2672 */
2673 static ssize_t
2674 _ctl_ioc_reset_count_show(struct device *cdev, struct device_attribute *attr,
2675 char *buf)
2676 {
2677 struct Scsi_Host *shost = class_to_shost(cdev);
2678 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2679
2680 return snprintf(buf, PAGE_SIZE, "%08d\n", ioc->ioc_reset_count);
2681 }
2682 static DEVICE_ATTR(ioc_reset_count, S_IRUGO,
2683 _ctl_ioc_reset_count_show, NULL);
2684
2685 struct DIAG_BUFFER_START {
2686 u32 Size;
2687 u32 DiagVersion;
2688 u8 BufferType;
2689 u8 Reserved[3];
2690 u32 Reserved1;
2691 u32 Reserved2;
2692 u32 Reserved3;
2693 };
2694 /**
2695 * _ctl_host_trace_buffer_size_show - host buffer size (trace only)
2696 * @cdev - pointer to embedded class device
2697 * @buf - the buffer returned
2698 *
2699 * A sysfs 'read-only' shost attribute.
2700 */
2701 static ssize_t
2702 _ctl_host_trace_buffer_size_show(struct device *cdev,
2703 struct device_attribute *attr, char *buf)
2704 {
2705 struct Scsi_Host *shost = class_to_shost(cdev);
2706 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2707 u32 size = 0;
2708 struct DIAG_BUFFER_START *request_data;
2709
2710 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2711 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2712 "registered\n", ioc->name, __func__);
2713 return 0;
2714 }
2715
2716 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2717 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
2718 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2719 "registered\n", ioc->name, __func__);
2720 return 0;
2721 }
2722
2723 request_data = (struct DIAG_BUFFER_START *)
2724 ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE];
2725 if ((le32_to_cpu(request_data->DiagVersion) == 0x00000000 ||
2726 le32_to_cpu(request_data->DiagVersion) == 0x01000000) &&
2727 le32_to_cpu(request_data->Reserved3) == 0x4742444c)
2728 size = le32_to_cpu(request_data->Size);
2729
2730 ioc->ring_buffer_sz = size;
2731 return snprintf(buf, PAGE_SIZE, "%d\n", size);
2732 }
2733 static DEVICE_ATTR(host_trace_buffer_size, S_IRUGO,
2734 _ctl_host_trace_buffer_size_show, NULL);
2735
2736 /**
2737 * _ctl_host_trace_buffer_show - firmware ring buffer (trace only)
2738 * @cdev - pointer to embedded class device
2739 * @buf - the buffer returned
2740 *
2741 * A sysfs 'read/write' shost attribute.
2742 *
2743 * You will only be able to read 4k bytes of ring buffer at a time.
2744 * In order to read beyond 4k bytes, you will have to write out the
2745 * offset to the same attribute, it will move the pointer.
2746 */
2747 static ssize_t
2748 _ctl_host_trace_buffer_show(struct device *cdev, struct device_attribute *attr,
2749 char *buf)
2750 {
2751 struct Scsi_Host *shost = class_to_shost(cdev);
2752 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2753 void *request_data;
2754 u32 size;
2755
2756 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2757 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2758 "registered\n", ioc->name, __func__);
2759 return 0;
2760 }
2761
2762 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2763 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
2764 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2765 "registered\n", ioc->name, __func__);
2766 return 0;
2767 }
2768
2769 if (ioc->ring_buffer_offset > ioc->ring_buffer_sz)
2770 return 0;
2771
2772 size = ioc->ring_buffer_sz - ioc->ring_buffer_offset;
2773 size = (size > PAGE_SIZE) ? PAGE_SIZE : size;
2774 request_data = ioc->diag_buffer[0] + ioc->ring_buffer_offset;
2775 memcpy(buf, request_data, size);
2776 return size;
2777 }
2778
2779 static ssize_t
2780 _ctl_host_trace_buffer_store(struct device *cdev, struct device_attribute *attr,
2781 const char *buf, size_t count)
2782 {
2783 struct Scsi_Host *shost = class_to_shost(cdev);
2784 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2785 int val = 0;
2786
2787 if (sscanf(buf, "%d", &val) != 1)
2788 return -EINVAL;
2789
2790 ioc->ring_buffer_offset = val;
2791 return strlen(buf);
2792 }
2793 static DEVICE_ATTR(host_trace_buffer, S_IRUGO | S_IWUSR,
2794 _ctl_host_trace_buffer_show, _ctl_host_trace_buffer_store);
2795
2796 /*****************************************/
2797
2798 /**
2799 * _ctl_host_trace_buffer_enable_show - firmware ring buffer (trace only)
2800 * @cdev - pointer to embedded class device
2801 * @buf - the buffer returned
2802 *
2803 * A sysfs 'read/write' shost attribute.
2804 *
2805 * This is a mechnism to post/release host_trace_buffers
2806 */
2807 static ssize_t
2808 _ctl_host_trace_buffer_enable_show(struct device *cdev,
2809 struct device_attribute *attr, char *buf)
2810 {
2811 struct Scsi_Host *shost = class_to_shost(cdev);
2812 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2813
2814 if ((!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) ||
2815 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2816 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0))
2817 return snprintf(buf, PAGE_SIZE, "off\n");
2818 else if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2819 MPT2_DIAG_BUFFER_IS_RELEASED))
2820 return snprintf(buf, PAGE_SIZE, "release\n");
2821 else
2822 return snprintf(buf, PAGE_SIZE, "post\n");
2823 }
2824
2825 static ssize_t
2826 _ctl_host_trace_buffer_enable_store(struct device *cdev,
2827 struct device_attribute *attr, const char *buf, size_t count)
2828 {
2829 struct Scsi_Host *shost = class_to_shost(cdev);
2830 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2831 char str[10] = "";
2832 struct mpt2_diag_register diag_register;
2833 u8 issue_reset = 0;
2834
2835 if (sscanf(buf, "%s", str) != 1)
2836 return -EINVAL;
2837
2838 if (!strcmp(str, "post")) {
2839 /* exit out if host buffers are already posted */
2840 if ((ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) &&
2841 (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2842 MPT2_DIAG_BUFFER_IS_REGISTERED) &&
2843 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2844 MPT2_DIAG_BUFFER_IS_RELEASED) == 0))
2845 goto out;
2846 memset(&diag_register, 0, sizeof(struct mpt2_diag_register));
2847 printk(MPT2SAS_INFO_FMT "posting host trace buffers\n",
2848 ioc->name);
2849 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
2850 diag_register.requested_buffer_size = (1024 * 1024);
2851 diag_register.unique_id = 0x7075900;
2852 ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] = 0;
2853 _ctl_diag_register_2(ioc, &diag_register);
2854 } else if (!strcmp(str, "release")) {
2855 /* exit out if host buffers are already released */
2856 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE])
2857 goto out;
2858 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2859 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0)
2860 goto out;
2861 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2862 MPT2_DIAG_BUFFER_IS_RELEASED))
2863 goto out;
2864 printk(MPT2SAS_INFO_FMT "releasing host trace buffer\n",
2865 ioc->name);
2866 _ctl_send_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE, &issue_reset);
2867 }
2868
2869 out:
2870 return strlen(buf);
2871 }
2872 static DEVICE_ATTR(host_trace_buffer_enable, S_IRUGO | S_IWUSR,
2873 _ctl_host_trace_buffer_enable_show, _ctl_host_trace_buffer_enable_store);
2874
2875 struct device_attribute *mpt2sas_host_attrs[] = {
2876 &dev_attr_version_fw,
2877 &dev_attr_version_bios,
2878 &dev_attr_version_mpi,
2879 &dev_attr_version_product,
2880 &dev_attr_version_nvdata_persistent,
2881 &dev_attr_version_nvdata_default,
2882 &dev_attr_board_name,
2883 &dev_attr_board_assembly,
2884 &dev_attr_board_tracer,
2885 &dev_attr_io_delay,
2886 &dev_attr_device_delay,
2887 &dev_attr_logging_level,
2888 &dev_attr_fwfault_debug,
2889 &dev_attr_fw_queue_depth,
2890 &dev_attr_host_sas_address,
2891 &dev_attr_ioc_reset_count,
2892 &dev_attr_host_trace_buffer_size,
2893 &dev_attr_host_trace_buffer,
2894 &dev_attr_host_trace_buffer_enable,
2895 NULL,
2896 };
2897
2898 /**
2899 * _ctl_device_sas_address_show - sas address
2900 * @cdev - pointer to embedded class device
2901 * @buf - the buffer returned
2902 *
2903 * This is the sas address for the target
2904 *
2905 * A sysfs 'read-only' shost attribute.
2906 */
2907 static ssize_t
2908 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr,
2909 char *buf)
2910 {
2911 struct scsi_device *sdev = to_scsi_device(dev);
2912 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2913
2914 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2915 (unsigned long long)sas_device_priv_data->sas_target->sas_address);
2916 }
2917 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL);
2918
2919 /**
2920 * _ctl_device_handle_show - device handle
2921 * @cdev - pointer to embedded class device
2922 * @buf - the buffer returned
2923 *
2924 * This is the firmware assigned device handle
2925 *
2926 * A sysfs 'read-only' shost attribute.
2927 */
2928 static ssize_t
2929 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr,
2930 char *buf)
2931 {
2932 struct scsi_device *sdev = to_scsi_device(dev);
2933 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2934
2935 return snprintf(buf, PAGE_SIZE, "0x%04x\n",
2936 sas_device_priv_data->sas_target->handle);
2937 }
2938 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL);
2939
2940 struct device_attribute *mpt2sas_dev_attrs[] = {
2941 &dev_attr_sas_address,
2942 &dev_attr_sas_device_handle,
2943 NULL,
2944 };
2945
2946 static const struct file_operations ctl_fops = {
2947 .owner = THIS_MODULE,
2948 .unlocked_ioctl = _ctl_ioctl,
2949 .release = _ctl_release,
2950 .poll = _ctl_poll,
2951 .fasync = _ctl_fasync,
2952 #ifdef CONFIG_COMPAT
2953 .compat_ioctl = _ctl_ioctl_compat,
2954 #endif
2955 };
2956
2957 static struct miscdevice ctl_dev = {
2958 .minor = MPT2SAS_MINOR,
2959 .name = MPT2SAS_DEV_NAME,
2960 .fops = &ctl_fops,
2961 };
2962
2963 /**
2964 * mpt2sas_ctl_init - main entry point for ctl.
2965 *
2966 */
2967 void
2968 mpt2sas_ctl_init(void)
2969 {
2970 async_queue = NULL;
2971 if (misc_register(&ctl_dev) < 0)
2972 printk(KERN_ERR "%s can't register misc device [minor=%d]\n",
2973 MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
2974
2975 init_waitqueue_head(&ctl_poll_wait);
2976 }
2977
2978 /**
2979 * mpt2sas_ctl_exit - exit point for ctl
2980 *
2981 */
2982 void
2983 mpt2sas_ctl_exit(void)
2984 {
2985 struct MPT2SAS_ADAPTER *ioc;
2986 int i;
2987
2988 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
2989
2990 /* free memory associated to diag buffers */
2991 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
2992 if (!ioc->diag_buffer[i])
2993 continue;
2994 pci_free_consistent(ioc->pdev, ioc->diag_buffer_sz[i],
2995 ioc->diag_buffer[i], ioc->diag_buffer_dma[i]);
2996 ioc->diag_buffer[i] = NULL;
2997 ioc->diag_buffer_status[i] = 0;
2998 }
2999
3000 kfree(ioc->event_log);
3001 }
3002 misc_deregister(&ctl_dev);
3003 }
Tomato firmware and modifications.