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sysfs: Remove support for tagged directories with untagged members (again)
[linux-btrfs-devel.git] / drivers / scsi / mpt2sas / mpt2sas_ctl.c
blob246d5fbc6e5a3c62a3264b3b81d58fce7e2fb1cf
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/kernel.h>
46 #include <linux/module.h>
47 #include <linux/errno.h>
48 #include <linux/init.h>
49 #include <linux/slab.h>
50 #include <linux/types.h>
51 #include <linux/pci.h>
52 #include <linux/delay.h>
53 #include <linux/mutex.h>
54 #include <linux/compat.h>
55 #include <linux/poll.h>
56
57 #include <linux/io.h>
58 #include <linux/uaccess.h>
59
60 #include "mpt2sas_base.h"
61 #include "mpt2sas_ctl.h"
62
63 static DEFINE_MUTEX(_ctl_mutex);
64 static struct fasync_struct *async_queue;
65 static DECLARE_WAIT_QUEUE_HEAD(ctl_poll_wait);
66
67 static int _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type,
68 u8 *issue_reset);
69
70 /**
71 * enum block_state - blocking state
72 * @NON_BLOCKING: non blocking
73 * @BLOCKING: blocking
74 *
75 * These states are for ioctls that need to wait for a response
76 * from firmware, so they probably require sleep.
77 */
78 enum block_state {
79 NON_BLOCKING,
80 BLOCKING,
81 };
82
83 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
84 /**
85 * _ctl_sas_device_find_by_handle - sas device search
86 * @ioc: per adapter object
87 * @handle: sas device handle (assigned by firmware)
88 * Context: Calling function should acquire ioc->sas_device_lock
89 *
90 * This searches for sas_device based on sas_address, then return sas_device
91 * object.
92 */
93 static struct _sas_device *
94 _ctl_sas_device_find_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle)
95 {
96 struct _sas_device *sas_device, *r;
97
98 r = NULL;
99 list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
100 if (sas_device->handle != handle)
101 continue;
102 r = sas_device;
103 goto out;
104 }
105
106 out:
107 return r;
108 }
109
110 /**
111 * _ctl_display_some_debug - debug routine
112 * @ioc: per adapter object
113 * @smid: system request message index
114 * @calling_function_name: string pass from calling function
115 * @mpi_reply: reply message frame
116 * Context: none.
117 *
118 * Function for displaying debug info helpful when debugging issues
119 * in this module.
120 */
121 static void
122 _ctl_display_some_debug(struct MPT2SAS_ADAPTER *ioc, u16 smid,
123 char *calling_function_name, MPI2DefaultReply_t *mpi_reply)
124 {
125 Mpi2ConfigRequest_t *mpi_request;
126 char *desc = NULL;
127
128 if (!(ioc->logging_level & MPT_DEBUG_IOCTL))
129 return;
130
131 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
132 switch (mpi_request->Function) {
133 case MPI2_FUNCTION_SCSI_IO_REQUEST:
134 {
135 Mpi2SCSIIORequest_t *scsi_request =
136 (Mpi2SCSIIORequest_t *)mpi_request;
137
138 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
139 "scsi_io, cmd(0x%02x), cdb_len(%d)",
140 scsi_request->CDB.CDB32[0],
141 le16_to_cpu(scsi_request->IoFlags) & 0xF);
142 desc = ioc->tmp_string;
143 break;
144 }
145 case MPI2_FUNCTION_SCSI_TASK_MGMT:
146 desc = "task_mgmt";
147 break;
148 case MPI2_FUNCTION_IOC_INIT:
149 desc = "ioc_init";
150 break;
151 case MPI2_FUNCTION_IOC_FACTS:
152 desc = "ioc_facts";
153 break;
154 case MPI2_FUNCTION_CONFIG:
155 {
156 Mpi2ConfigRequest_t *config_request =
157 (Mpi2ConfigRequest_t *)mpi_request;
158
159 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
160 "config, type(0x%02x), ext_type(0x%02x), number(%d)",
161 (config_request->Header.PageType &
162 MPI2_CONFIG_PAGETYPE_MASK), config_request->ExtPageType,
163 config_request->Header.PageNumber);
164 desc = ioc->tmp_string;
165 break;
166 }
167 case MPI2_FUNCTION_PORT_FACTS:
168 desc = "port_facts";
169 break;
170 case MPI2_FUNCTION_PORT_ENABLE:
171 desc = "port_enable";
172 break;
173 case MPI2_FUNCTION_EVENT_NOTIFICATION:
174 desc = "event_notification";
175 break;
176 case MPI2_FUNCTION_FW_DOWNLOAD:
177 desc = "fw_download";
178 break;
179 case MPI2_FUNCTION_FW_UPLOAD:
180 desc = "fw_upload";
181 break;
182 case MPI2_FUNCTION_RAID_ACTION:
183 desc = "raid_action";
184 break;
185 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
186 {
187 Mpi2SCSIIORequest_t *scsi_request =
188 (Mpi2SCSIIORequest_t *)mpi_request;
189
190 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
191 "raid_pass, cmd(0x%02x), cdb_len(%d)",
192 scsi_request->CDB.CDB32[0],
193 le16_to_cpu(scsi_request->IoFlags) & 0xF);
194 desc = ioc->tmp_string;
195 break;
196 }
197 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
198 desc = "sas_iounit_cntl";
199 break;
200 case MPI2_FUNCTION_SATA_PASSTHROUGH:
201 desc = "sata_pass";
202 break;
203 case MPI2_FUNCTION_DIAG_BUFFER_POST:
204 desc = "diag_buffer_post";
205 break;
206 case MPI2_FUNCTION_DIAG_RELEASE:
207 desc = "diag_release";
208 break;
209 case MPI2_FUNCTION_SMP_PASSTHROUGH:
210 desc = "smp_passthrough";
211 break;
212 }
213
214 if (!desc)
215 return;
216
217 printk(MPT2SAS_INFO_FMT "%s: %s, smid(%d)\n",
218 ioc->name, calling_function_name, desc, smid);
219
220 if (!mpi_reply)
221 return;
222
223 if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo)
224 printk(MPT2SAS_INFO_FMT
225 "\tiocstatus(0x%04x), loginfo(0x%08x)\n",
226 ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
227 le32_to_cpu(mpi_reply->IOCLogInfo));
228
229 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
230 mpi_request->Function ==
231 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
232 Mpi2SCSIIOReply_t *scsi_reply =
233 (Mpi2SCSIIOReply_t *)mpi_reply;
234 struct _sas_device *sas_device = NULL;
235 unsigned long flags;
236
237 spin_lock_irqsave(&ioc->sas_device_lock, flags);
238 sas_device = _ctl_sas_device_find_by_handle(ioc,
239 le16_to_cpu(scsi_reply->DevHandle));
240 if (sas_device) {
241 printk(MPT2SAS_WARN_FMT "\tsas_address(0x%016llx), "
242 "phy(%d)\n", ioc->name, (unsigned long long)
243 sas_device->sas_address, sas_device->phy);
244 printk(MPT2SAS_WARN_FMT
245 "\tenclosure_logical_id(0x%016llx), slot(%d)\n",
246 ioc->name, sas_device->enclosure_logical_id,
247 sas_device->slot);
248 }
249 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
250 if (scsi_reply->SCSIState || scsi_reply->SCSIStatus)
251 printk(MPT2SAS_INFO_FMT
252 "\tscsi_state(0x%02x), scsi_status"
253 "(0x%02x)\n", ioc->name,
254 scsi_reply->SCSIState,
255 scsi_reply->SCSIStatus);
256 }
257 }
258 #endif
259
260 /**
261 * mpt2sas_ctl_done - ctl module completion routine
262 * @ioc: per adapter object
263 * @smid: system request message index
264 * @msix_index: MSIX table index supplied by the OS
265 * @reply: reply message frame(lower 32bit addr)
266 * Context: none.
267 *
268 * The callback handler when using ioc->ctl_cb_idx.
269 *
270 * Return 1 meaning mf should be freed from _base_interrupt
271 * 0 means the mf is freed from this function.
272 */
273 u8
274 mpt2sas_ctl_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
275 u32 reply)
276 {
277 MPI2DefaultReply_t *mpi_reply;
278 Mpi2SCSIIOReply_t *scsiio_reply;
279 const void *sense_data;
280 u32 sz;
281
282 if (ioc->ctl_cmds.status == MPT2_CMD_NOT_USED)
283 return 1;
284 if (ioc->ctl_cmds.smid != smid)
285 return 1;
286 ioc->ctl_cmds.status |= MPT2_CMD_COMPLETE;
287 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
288 if (mpi_reply) {
289 memcpy(ioc->ctl_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
290 ioc->ctl_cmds.status |= MPT2_CMD_REPLY_VALID;
291 /* get sense data */
292 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
293 mpi_reply->Function ==
294 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
295 scsiio_reply = (Mpi2SCSIIOReply_t *)mpi_reply;
296 if (scsiio_reply->SCSIState &
297 MPI2_SCSI_STATE_AUTOSENSE_VALID) {
298 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
299 le32_to_cpu(scsiio_reply->SenseCount));
300 sense_data = mpt2sas_base_get_sense_buffer(ioc,
301 smid);
302 memcpy(ioc->ctl_cmds.sense, sense_data, sz);
303 }
304 }
305 }
306 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
307 _ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply);
308 #endif
309 ioc->ctl_cmds.status &= ~MPT2_CMD_PENDING;
310 complete(&ioc->ctl_cmds.done);
311 return 1;
312 }
313
314 /**
315 * _ctl_check_event_type - determines when an event needs logging
316 * @ioc: per adapter object
317 * @event: firmware event
318 *
319 * The bitmask in ioc->event_type[] indicates which events should be
320 * be saved in the driver event_log. This bitmask is set by application.
321 *
322 * Returns 1 when event should be captured, or zero means no match.
323 */
324 static int
325 _ctl_check_event_type(struct MPT2SAS_ADAPTER *ioc, u16 event)
326 {
327 u16 i;
328 u32 desired_event;
329
330 if (event >= 128 || !event || !ioc->event_log)
331 return 0;
332
333 desired_event = (1 << (event % 32));
334 if (!desired_event)
335 desired_event = 1;
336 i = event / 32;
337 return desired_event & ioc->event_type[i];
338 }
339
340 /**
341 * mpt2sas_ctl_add_to_event_log - add event
342 * @ioc: per adapter object
343 * @mpi_reply: reply message frame
344 *
345 * Return nothing.
346 */
347 void
348 mpt2sas_ctl_add_to_event_log(struct MPT2SAS_ADAPTER *ioc,
349 Mpi2EventNotificationReply_t *mpi_reply)
350 {
351 struct MPT2_IOCTL_EVENTS *event_log;
352 u16 event;
353 int i;
354 u32 sz, event_data_sz;
355 u8 send_aen = 0;
356
357 if (!ioc->event_log)
358 return;
359
360 event = le16_to_cpu(mpi_reply->Event);
361
362 if (_ctl_check_event_type(ioc, event)) {
363
364 /* insert entry into circular event_log */
365 i = ioc->event_context % MPT2SAS_CTL_EVENT_LOG_SIZE;
366 event_log = ioc->event_log;
367 event_log[i].event = event;
368 event_log[i].context = ioc->event_context++;
369
370 event_data_sz = le16_to_cpu(mpi_reply->EventDataLength)*4;
371 sz = min_t(u32, event_data_sz, MPT2_EVENT_DATA_SIZE);
372 memset(event_log[i].data, 0, MPT2_EVENT_DATA_SIZE);
373 memcpy(event_log[i].data, mpi_reply->EventData, sz);
374 send_aen = 1;
375 }
376
377 /* This aen_event_read_flag flag is set until the
378 * application has read the event log.
379 * For MPI2_EVENT_LOG_ENTRY_ADDED, we always notify.
380 */
381 if (event == MPI2_EVENT_LOG_ENTRY_ADDED ||
382 (send_aen && !ioc->aen_event_read_flag)) {
383 ioc->aen_event_read_flag = 1;
384 wake_up_interruptible(&ctl_poll_wait);
385 if (async_queue)
386 kill_fasync(&async_queue, SIGIO, POLL_IN);
387 }
388 }
389
390 /**
391 * mpt2sas_ctl_event_callback - firmware event handler (called at ISR time)
392 * @ioc: per adapter object
393 * @msix_index: MSIX table index supplied by the OS
394 * @reply: reply message frame(lower 32bit addr)
395 * Context: interrupt.
396 *
397 * This function merely adds a new work task into ioc->firmware_event_thread.
398 * The tasks are worked from _firmware_event_work in user context.
399 *
400 * Return 1 meaning mf should be freed from _base_interrupt
401 * 0 means the mf is freed from this function.
402 */
403 u8
404 mpt2sas_ctl_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 msix_index,
405 u32 reply)
406 {
407 Mpi2EventNotificationReply_t *mpi_reply;
408
409 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
410 mpt2sas_ctl_add_to_event_log(ioc, mpi_reply);
411 return 1;
412 }
413
414 /**
415 * _ctl_verify_adapter - validates ioc_number passed from application
416 * @ioc: per adapter object
417 * @iocpp: The ioc pointer is returned in this.
418 *
419 * Return (-1) means error, else ioc_number.
420 */
421 static int
422 _ctl_verify_adapter(int ioc_number, struct MPT2SAS_ADAPTER **iocpp)
423 {
424 struct MPT2SAS_ADAPTER *ioc;
425
426 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
427 if (ioc->id != ioc_number)
428 continue;
429 *iocpp = ioc;
430 return ioc_number;
431 }
432 *iocpp = NULL;
433 return -1;
434 }
435
436 /**
437 * mpt2sas_ctl_reset_handler - reset callback handler (for ctl)
438 * @ioc: per adapter object
439 * @reset_phase: phase
440 *
441 * The handler for doing any required cleanup or initialization.
442 *
443 * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
444 * MPT2_IOC_DONE_RESET
445 */
446 void
447 mpt2sas_ctl_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
448 {
449 int i;
450 u8 issue_reset;
451
452 switch (reset_phase) {
453 case MPT2_IOC_PRE_RESET:
454 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
455 "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
456 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
457 if (!(ioc->diag_buffer_status[i] &
458 MPT2_DIAG_BUFFER_IS_REGISTERED))
459 continue;
460 if ((ioc->diag_buffer_status[i] &
461 MPT2_DIAG_BUFFER_IS_RELEASED))
462 continue;
463 _ctl_send_release(ioc, i, &issue_reset);
464 }
465 break;
466 case MPT2_IOC_AFTER_RESET:
467 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
468 "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
469 if (ioc->ctl_cmds.status & MPT2_CMD_PENDING) {
470 ioc->ctl_cmds.status |= MPT2_CMD_RESET;
471 mpt2sas_base_free_smid(ioc, ioc->ctl_cmds.smid);
472 complete(&ioc->ctl_cmds.done);
473 }
474 break;
475 case MPT2_IOC_DONE_RESET:
476 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
477 "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
478
479 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
480 if (!(ioc->diag_buffer_status[i] &
481 MPT2_DIAG_BUFFER_IS_REGISTERED))
482 continue;
483 if ((ioc->diag_buffer_status[i] &
484 MPT2_DIAG_BUFFER_IS_RELEASED))
485 continue;
486 ioc->diag_buffer_status[i] |=
487 MPT2_DIAG_BUFFER_IS_DIAG_RESET;
488 }
489 break;
490 }
491 }
492
493 /**
494 * _ctl_fasync -
495 * @fd -
496 * @filep -
497 * @mode -
498 *
499 * Called when application request fasyn callback handler.
500 */
501 static int
502 _ctl_fasync(int fd, struct file *filep, int mode)
503 {
504 return fasync_helper(fd, filep, mode, &async_queue);
505 }
506
507 /**
508 * _ctl_release -
509 * @inode -
510 * @filep -
511 *
512 * Called when application releases the fasyn callback handler.
513 */
514 static int
515 _ctl_release(struct inode *inode, struct file *filep)
516 {
517 return fasync_helper(-1, filep, 0, &async_queue);
518 }
519
520 /**
521 * _ctl_poll -
522 * @file -
523 * @wait -
524 *
525 */
526 static unsigned int
527 _ctl_poll(struct file *filep, poll_table *wait)
528 {
529 struct MPT2SAS_ADAPTER *ioc;
530
531 poll_wait(filep, &ctl_poll_wait, wait);
532
533 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
534 if (ioc->aen_event_read_flag)
535 return POLLIN | POLLRDNORM;
536 }
537 return 0;
538 }
539
540 /**
541 * _ctl_set_task_mid - assign an active smid to tm request
542 * @ioc: per adapter object
543 * @karg - (struct mpt2_ioctl_command)
544 * @tm_request - pointer to mf from user space
545 *
546 * Returns 0 when an smid if found, else fail.
547 * during failure, the reply frame is filled.
548 */
549 static int
550 _ctl_set_task_mid(struct MPT2SAS_ADAPTER *ioc, struct mpt2_ioctl_command *karg,
551 Mpi2SCSITaskManagementRequest_t *tm_request)
552 {
553 u8 found = 0;
554 u16 i;
555 u16 handle;
556 struct scsi_cmnd *scmd;
557 struct MPT2SAS_DEVICE *priv_data;
558 unsigned long flags;
559 Mpi2SCSITaskManagementReply_t *tm_reply;
560 u32 sz;
561 u32 lun;
562 char *desc = NULL;
563
564 if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
565 desc = "abort_task";
566 else if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
567 desc = "query_task";
568 else
569 return 0;
570
571 lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN);
572
573 handle = le16_to_cpu(tm_request->DevHandle);
574 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
575 for (i = ioc->scsiio_depth; i && !found; i--) {
576 scmd = ioc->scsi_lookup[i - 1].scmd;
577 if (scmd == NULL || scmd->device == NULL ||
578 scmd->device->hostdata == NULL)
579 continue;
580 if (lun != scmd->device->lun)
581 continue;
582 priv_data = scmd->device->hostdata;
583 if (priv_data->sas_target == NULL)
584 continue;
585 if (priv_data->sas_target->handle != handle)
586 continue;
587 tm_request->TaskMID = cpu_to_le16(ioc->scsi_lookup[i - 1].smid);
588 found = 1;
589 }
590 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
591
592 if (!found) {
593 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
594 "handle(0x%04x), lun(%d), no active mid!!\n", ioc->name,
595 desc, le16_to_cpu(tm_request->DevHandle), lun));
596 tm_reply = ioc->ctl_cmds.reply;
597 tm_reply->DevHandle = tm_request->DevHandle;
598 tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
599 tm_reply->TaskType = tm_request->TaskType;
600 tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4;
601 tm_reply->VP_ID = tm_request->VP_ID;
602 tm_reply->VF_ID = tm_request->VF_ID;
603 sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz);
604 if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply,
605 sz))
606 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
607 __LINE__, __func__);
608 return 1;
609 }
610
611 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
612 "handle(0x%04x), lun(%d), task_mid(%d)\n", ioc->name,
613 desc, le16_to_cpu(tm_request->DevHandle), lun,
614 le16_to_cpu(tm_request->TaskMID)));
615 return 0;
616 }
617
618 /**
619 * _ctl_do_mpt_command - main handler for MPT2COMMAND opcode
620 * @ioc: per adapter object
621 * @karg - (struct mpt2_ioctl_command)
622 * @mf - pointer to mf in user space
623 * @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 /* Check for overflow and wraparound */
691 if (karg.data_sge_offset * 4 > ioc->request_sz ||
692 karg.data_sge_offset > (UINT_MAX / 4)) {
693 ret = -EINVAL;
694 goto out;
695 }
696
697 /* copy in request message frame from user */
698 if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) {
699 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__,
700 __func__);
701 ret = -EFAULT;
702 goto out;
703 }
704
705 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
706 smid = mpt2sas_base_get_smid_hpr(ioc, ioc->ctl_cb_idx);
707 if (!smid) {
708 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
709 ioc->name, __func__);
710 ret = -EAGAIN;
711 goto out;
712 }
713 } else {
714
715 smid = mpt2sas_base_get_smid_scsiio(ioc, ioc->ctl_cb_idx, NULL);
716 if (!smid) {
717 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
718 ioc->name, __func__);
719 ret = -EAGAIN;
720 goto out;
721 }
722 }
723
724 ret = 0;
725 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
726 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
727 request = mpt2sas_base_get_msg_frame(ioc, smid);
728 memcpy(request, mpi_request, karg.data_sge_offset*4);
729 ioc->ctl_cmds.smid = smid;
730 data_out_sz = karg.data_out_size;
731 data_in_sz = karg.data_in_size;
732
733 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
734 mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
735 if (!le16_to_cpu(mpi_request->FunctionDependent1) ||
736 le16_to_cpu(mpi_request->FunctionDependent1) >
737 ioc->facts.MaxDevHandle) {
738 ret = -EINVAL;
739 mpt2sas_base_free_smid(ioc, smid);
740 goto out;
741 }
742 }
743
744 /* obtain dma-able memory for data transfer */
745 if (data_out_sz) /* WRITE */ {
746 data_out = pci_alloc_consistent(ioc->pdev, data_out_sz,
747 &data_out_dma);
748 if (!data_out) {
749 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
750 __LINE__, __func__);
751 ret = -ENOMEM;
752 mpt2sas_base_free_smid(ioc, smid);
753 goto out;
754 }
755 if (copy_from_user(data_out, karg.data_out_buf_ptr,
756 data_out_sz)) {
757 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
758 __LINE__, __func__);
759 ret = -EFAULT;
760 mpt2sas_base_free_smid(ioc, smid);
761 goto out;
762 }
763 }
764
765 if (data_in_sz) /* READ */ {
766 data_in = pci_alloc_consistent(ioc->pdev, data_in_sz,
767 &data_in_dma);
768 if (!data_in) {
769 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
770 __LINE__, __func__);
771 ret = -ENOMEM;
772 mpt2sas_base_free_smid(ioc, smid);
773 goto out;
774 }
775 }
776
777 /* add scatter gather elements */
778 psge = (void *)request + (karg.data_sge_offset*4);
779
780 if (!data_out_sz && !data_in_sz) {
781 mpt2sas_base_build_zero_len_sge(ioc, psge);
782 } else if (data_out_sz && data_in_sz) {
783 /* WRITE sgel first */
784 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
785 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
786 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
787 ioc->base_add_sg_single(psge, sgl_flags |
788 data_out_sz, data_out_dma);
789
790 /* incr sgel */
791 psge += ioc->sge_size;
792
793 /* READ sgel last */
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);
797 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
798 ioc->base_add_sg_single(psge, sgl_flags |
799 data_in_sz, data_in_dma);
800 } else if (data_out_sz) /* WRITE */ {
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 | MPI2_SGE_FLAGS_HOST_TO_IOC);
804 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
805 ioc->base_add_sg_single(psge, sgl_flags |
806 data_out_sz, data_out_dma);
807 } else if (data_in_sz) /* READ */ {
808 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
809 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
810 MPI2_SGE_FLAGS_END_OF_LIST);
811 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
812 ioc->base_add_sg_single(psge, sgl_flags |
813 data_in_sz, data_in_dma);
814 }
815
816 /* send command to firmware */
817 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
818 _ctl_display_some_debug(ioc, smid, "ctl_request", NULL);
819 #endif
820
821 switch (mpi_request->Function) {
822 case MPI2_FUNCTION_SCSI_IO_REQUEST:
823 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
824 {
825 Mpi2SCSIIORequest_t *scsiio_request =
826 (Mpi2SCSIIORequest_t *)request;
827 scsiio_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
828 scsiio_request->SenseBufferLowAddress =
829 mpt2sas_base_get_sense_buffer_dma(ioc, smid);
830 memset(ioc->ctl_cmds.sense, 0, SCSI_SENSE_BUFFERSIZE);
831 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST)
832 mpt2sas_base_put_smid_scsi_io(ioc, smid,
833 le16_to_cpu(mpi_request->FunctionDependent1));
834 else
835 mpt2sas_base_put_smid_default(ioc, smid);
836 break;
837 }
838 case MPI2_FUNCTION_SCSI_TASK_MGMT:
839 {
840 Mpi2SCSITaskManagementRequest_t *tm_request =
841 (Mpi2SCSITaskManagementRequest_t *)request;
842
843 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "TASK_MGMT: "
844 "handle(0x%04x), task_type(0x%02x)\n", ioc->name,
845 le16_to_cpu(tm_request->DevHandle), tm_request->TaskType));
846
847 if (tm_request->TaskType ==
848 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK ||
849 tm_request->TaskType ==
850 MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) {
851 if (_ctl_set_task_mid(ioc, &karg, tm_request)) {
852 mpt2sas_base_free_smid(ioc, smid);
853 goto out;
854 }
855 }
856
857 mpt2sas_scsih_set_tm_flag(ioc, le16_to_cpu(
858 tm_request->DevHandle));
859 mpt2sas_base_put_smid_hi_priority(ioc, smid);
860 break;
861 }
862 case MPI2_FUNCTION_SMP_PASSTHROUGH:
863 {
864 Mpi2SmpPassthroughRequest_t *smp_request =
865 (Mpi2SmpPassthroughRequest_t *)mpi_request;
866 u8 *data;
867
868 /* ioc determines which port to use */
869 smp_request->PhysicalPort = 0xFF;
870 if (smp_request->PassthroughFlags &
871 MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE)
872 data = (u8 *)&smp_request->SGL;
873 else
874 data = data_out;
875
876 if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) {
877 ioc->ioc_link_reset_in_progress = 1;
878 ioc->ignore_loginfos = 1;
879 }
880 mpt2sas_base_put_smid_default(ioc, smid);
881 break;
882 }
883 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
884 {
885 Mpi2SasIoUnitControlRequest_t *sasiounit_request =
886 (Mpi2SasIoUnitControlRequest_t *)mpi_request;
887
888 if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET
889 || sasiounit_request->Operation ==
890 MPI2_SAS_OP_PHY_LINK_RESET) {
891 ioc->ioc_link_reset_in_progress = 1;
892 ioc->ignore_loginfos = 1;
893 }
894 mpt2sas_base_put_smid_default(ioc, smid);
895 break;
896 }
897 default:
898 mpt2sas_base_put_smid_default(ioc, smid);
899 break;
900 }
901
902 if (karg.timeout < MPT2_IOCTL_DEFAULT_TIMEOUT)
903 timeout = MPT2_IOCTL_DEFAULT_TIMEOUT;
904 else
905 timeout = karg.timeout;
906 init_completion(&ioc->ctl_cmds.done);
907 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
908 timeout*HZ);
909 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
910 Mpi2SCSITaskManagementRequest_t *tm_request =
911 (Mpi2SCSITaskManagementRequest_t *)mpi_request;
912 mpt2sas_scsih_clear_tm_flag(ioc, le16_to_cpu(
913 tm_request->DevHandle));
914 } else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH ||
915 mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) &&
916 ioc->ioc_link_reset_in_progress) {
917 ioc->ioc_link_reset_in_progress = 0;
918 ioc->ignore_loginfos = 0;
919 }
920 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
921 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
922 __func__);
923 _debug_dump_mf(mpi_request, karg.data_sge_offset);
924 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
925 issue_reset = 1;
926 goto issue_host_reset;
927 }
928
929 mpi_reply = ioc->ctl_cmds.reply;
930 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
931
932 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
933 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT &&
934 (ioc->logging_level & MPT_DEBUG_TM)) {
935 Mpi2SCSITaskManagementReply_t *tm_reply =
936 (Mpi2SCSITaskManagementReply_t *)mpi_reply;
937
938 printk(MPT2SAS_INFO_FMT "TASK_MGMT: "
939 "IOCStatus(0x%04x), IOCLogInfo(0x%08x), "
940 "TerminationCount(0x%08x)\n", ioc->name,
941 le16_to_cpu(tm_reply->IOCStatus),
942 le32_to_cpu(tm_reply->IOCLogInfo),
943 le32_to_cpu(tm_reply->TerminationCount));
944 }
945 #endif
946 /* copy out xdata to user */
947 if (data_in_sz) {
948 if (copy_to_user(karg.data_in_buf_ptr, data_in,
949 data_in_sz)) {
950 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
951 __LINE__, __func__);
952 ret = -ENODATA;
953 goto out;
954 }
955 }
956
957 /* copy out reply message frame to user */
958 if (karg.max_reply_bytes) {
959 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
960 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
961 sz)) {
962 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
963 __LINE__, __func__);
964 ret = -ENODATA;
965 goto out;
966 }
967 }
968
969 /* copy out sense to user */
970 if (karg.max_sense_bytes && (mpi_request->Function ==
971 MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
972 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
973 sz = min_t(u32, karg.max_sense_bytes, SCSI_SENSE_BUFFERSIZE);
974 if (copy_to_user(karg.sense_data_ptr,
975 ioc->ctl_cmds.sense, sz)) {
976 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
977 __LINE__, __func__);
978 ret = -ENODATA;
979 goto out;
980 }
981 }
982
983 issue_host_reset:
984 if (issue_reset) {
985 ret = -ENODATA;
986 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
987 mpi_request->Function ==
988 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
989 printk(MPT2SAS_INFO_FMT "issue target reset: handle "
990 "= (0x%04x)\n", ioc->name,
991 le16_to_cpu(mpi_request->FunctionDependent1));
992 mpt2sas_halt_firmware(ioc);
993 mpt2sas_scsih_issue_tm(ioc,
994 le16_to_cpu(mpi_request->FunctionDependent1), 0, 0,
995 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 10,
996 0, TM_MUTEX_ON);
997 ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
998 } else
999 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1000 FORCE_BIG_HAMMER);
1001 }
1002
1003 out:
1004
1005 /* free memory associated with sg buffers */
1006 if (data_in)
1007 pci_free_consistent(ioc->pdev, data_in_sz, data_in,
1008 data_in_dma);
1009
1010 if (data_out)
1011 pci_free_consistent(ioc->pdev, data_out_sz, data_out,
1012 data_out_dma);
1013
1014 kfree(mpi_request);
1015 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1016 mutex_unlock(&ioc->ctl_cmds.mutex);
1017 return ret;
1018 }
1019
1020 /**
1021 * _ctl_getiocinfo - main handler for MPT2IOCINFO opcode
1022 * @arg - user space buffer containing ioctl content
1023 */
1024 static long
1025 _ctl_getiocinfo(void __user *arg)
1026 {
1027 struct mpt2_ioctl_iocinfo karg;
1028 struct MPT2SAS_ADAPTER *ioc;
1029 u8 revision;
1030
1031 if (copy_from_user(&karg, arg, sizeof(karg))) {
1032 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1033 __FILE__, __LINE__, __func__);
1034 return -EFAULT;
1035 }
1036 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1037 return -ENODEV;
1038
1039 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1040 __func__));
1041
1042 memset(&karg, 0 , sizeof(karg));
1043 if (ioc->is_warpdrive)
1044 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2_SSS6200;
1045 else
1046 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
1047 if (ioc->pfacts)
1048 karg.port_number = ioc->pfacts[0].PortNumber;
1049 pci_read_config_byte(ioc->pdev, PCI_CLASS_REVISION, &revision);
1050 karg.hw_rev = revision;
1051 karg.pci_id = ioc->pdev->device;
1052 karg.subsystem_device = ioc->pdev->subsystem_device;
1053 karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
1054 karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
1055 karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
1056 karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
1057 karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
1058 karg.firmware_version = ioc->facts.FWVersion.Word;
1059 strcpy(karg.driver_version, MPT2SAS_DRIVER_NAME);
1060 strcat(karg.driver_version, "-");
1061 strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
1062 karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
1063
1064 if (copy_to_user(arg, &karg, sizeof(karg))) {
1065 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1066 __FILE__, __LINE__, __func__);
1067 return -EFAULT;
1068 }
1069 return 0;
1070 }
1071
1072 /**
1073 * _ctl_eventquery - main handler for MPT2EVENTQUERY opcode
1074 * @arg - user space buffer containing ioctl content
1075 */
1076 static long
1077 _ctl_eventquery(void __user *arg)
1078 {
1079 struct mpt2_ioctl_eventquery karg;
1080 struct MPT2SAS_ADAPTER *ioc;
1081
1082 if (copy_from_user(&karg, arg, sizeof(karg))) {
1083 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1084 __FILE__, __LINE__, __func__);
1085 return -EFAULT;
1086 }
1087 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1088 return -ENODEV;
1089
1090 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1091 __func__));
1092
1093 karg.event_entries = MPT2SAS_CTL_EVENT_LOG_SIZE;
1094 memcpy(karg.event_types, ioc->event_type,
1095 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1096
1097 if (copy_to_user(arg, &karg, sizeof(karg))) {
1098 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1099 __FILE__, __LINE__, __func__);
1100 return -EFAULT;
1101 }
1102 return 0;
1103 }
1104
1105 /**
1106 * _ctl_eventenable - main handler for MPT2EVENTENABLE opcode
1107 * @arg - user space buffer containing ioctl content
1108 */
1109 static long
1110 _ctl_eventenable(void __user *arg)
1111 {
1112 struct mpt2_ioctl_eventenable karg;
1113 struct MPT2SAS_ADAPTER *ioc;
1114
1115 if (copy_from_user(&karg, arg, sizeof(karg))) {
1116 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1117 __FILE__, __LINE__, __func__);
1118 return -EFAULT;
1119 }
1120 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1121 return -ENODEV;
1122
1123 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1124 __func__));
1125
1126 if (ioc->event_log)
1127 return 0;
1128 memcpy(ioc->event_type, karg.event_types,
1129 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1130 mpt2sas_base_validate_event_type(ioc, ioc->event_type);
1131
1132 /* initialize event_log */
1133 ioc->event_context = 0;
1134 ioc->aen_event_read_flag = 0;
1135 ioc->event_log = kcalloc(MPT2SAS_CTL_EVENT_LOG_SIZE,
1136 sizeof(struct MPT2_IOCTL_EVENTS), GFP_KERNEL);
1137 if (!ioc->event_log) {
1138 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1139 __FILE__, __LINE__, __func__);
1140 return -ENOMEM;
1141 }
1142 return 0;
1143 }
1144
1145 /**
1146 * _ctl_eventreport - main handler for MPT2EVENTREPORT opcode
1147 * @arg - user space buffer containing ioctl content
1148 */
1149 static long
1150 _ctl_eventreport(void __user *arg)
1151 {
1152 struct mpt2_ioctl_eventreport karg;
1153 struct MPT2SAS_ADAPTER *ioc;
1154 u32 number_bytes, max_events, max;
1155 struct mpt2_ioctl_eventreport __user *uarg = arg;
1156
1157 if (copy_from_user(&karg, arg, sizeof(karg))) {
1158 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1159 __FILE__, __LINE__, __func__);
1160 return -EFAULT;
1161 }
1162 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1163 return -ENODEV;
1164
1165 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1166 __func__));
1167
1168 number_bytes = karg.hdr.max_data_size -
1169 sizeof(struct mpt2_ioctl_header);
1170 max_events = number_bytes/sizeof(struct MPT2_IOCTL_EVENTS);
1171 max = min_t(u32, MPT2SAS_CTL_EVENT_LOG_SIZE, max_events);
1172
1173 /* If fewer than 1 event is requested, there must have
1174 * been some type of error.
1175 */
1176 if (!max || !ioc->event_log)
1177 return -ENODATA;
1178
1179 number_bytes = max * sizeof(struct MPT2_IOCTL_EVENTS);
1180 if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
1181 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1182 __FILE__, __LINE__, __func__);
1183 return -EFAULT;
1184 }
1185
1186 /* reset flag so SIGIO can restart */
1187 ioc->aen_event_read_flag = 0;
1188 return 0;
1189 }
1190
1191 /**
1192 * _ctl_do_reset - main handler for MPT2HARDRESET opcode
1193 * @arg - user space buffer containing ioctl content
1194 */
1195 static long
1196 _ctl_do_reset(void __user *arg)
1197 {
1198 struct mpt2_ioctl_diag_reset karg;
1199 struct MPT2SAS_ADAPTER *ioc;
1200 int retval;
1201
1202 if (copy_from_user(&karg, arg, sizeof(karg))) {
1203 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1204 __FILE__, __LINE__, __func__);
1205 return -EFAULT;
1206 }
1207 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1208 return -ENODEV;
1209
1210 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
1211 __func__));
1212
1213 retval = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1214 FORCE_BIG_HAMMER);
1215 printk(MPT2SAS_INFO_FMT "host reset: %s\n",
1216 ioc->name, ((!retval) ? "SUCCESS" : "FAILED"));
1217 return 0;
1218 }
1219
1220 /**
1221 * _ctl_btdh_search_sas_device - searching for sas device
1222 * @ioc: per adapter object
1223 * @btdh: btdh ioctl payload
1224 */
1225 static int
1226 _ctl_btdh_search_sas_device(struct MPT2SAS_ADAPTER *ioc,
1227 struct mpt2_ioctl_btdh_mapping *btdh)
1228 {
1229 struct _sas_device *sas_device;
1230 unsigned long flags;
1231 int rc = 0;
1232
1233 if (list_empty(&ioc->sas_device_list))
1234 return rc;
1235
1236 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1237 list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
1238 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1239 btdh->handle == sas_device->handle) {
1240 btdh->bus = sas_device->channel;
1241 btdh->id = sas_device->id;
1242 rc = 1;
1243 goto out;
1244 } else if (btdh->bus == sas_device->channel && btdh->id ==
1245 sas_device->id && btdh->handle == 0xFFFF) {
1246 btdh->handle = sas_device->handle;
1247 rc = 1;
1248 goto out;
1249 }
1250 }
1251 out:
1252 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1253 return rc;
1254 }
1255
1256 /**
1257 * _ctl_btdh_search_raid_device - searching for raid device
1258 * @ioc: per adapter object
1259 * @btdh: btdh ioctl payload
1260 */
1261 static int
1262 _ctl_btdh_search_raid_device(struct MPT2SAS_ADAPTER *ioc,
1263 struct mpt2_ioctl_btdh_mapping *btdh)
1264 {
1265 struct _raid_device *raid_device;
1266 unsigned long flags;
1267 int rc = 0;
1268
1269 if (list_empty(&ioc->raid_device_list))
1270 return rc;
1271
1272 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1273 list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
1274 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1275 btdh->handle == raid_device->handle) {
1276 btdh->bus = raid_device->channel;
1277 btdh->id = raid_device->id;
1278 rc = 1;
1279 goto out;
1280 } else if (btdh->bus == raid_device->channel && btdh->id ==
1281 raid_device->id && btdh->handle == 0xFFFF) {
1282 btdh->handle = raid_device->handle;
1283 rc = 1;
1284 goto out;
1285 }
1286 }
1287 out:
1288 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1289 return rc;
1290 }
1291
1292 /**
1293 * _ctl_btdh_mapping - main handler for MPT2BTDHMAPPING opcode
1294 * @arg - user space buffer containing ioctl content
1295 */
1296 static long
1297 _ctl_btdh_mapping(void __user *arg)
1298 {
1299 struct mpt2_ioctl_btdh_mapping karg;
1300 struct MPT2SAS_ADAPTER *ioc;
1301 int rc;
1302
1303 if (copy_from_user(&karg, arg, sizeof(karg))) {
1304 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1305 __FILE__, __LINE__, __func__);
1306 return -EFAULT;
1307 }
1308 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1309 return -ENODEV;
1310
1311 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1312 __func__));
1313
1314 rc = _ctl_btdh_search_sas_device(ioc, &karg);
1315 if (!rc)
1316 _ctl_btdh_search_raid_device(ioc, &karg);
1317
1318 if (copy_to_user(arg, &karg, sizeof(karg))) {
1319 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1320 __FILE__, __LINE__, __func__);
1321 return -EFAULT;
1322 }
1323 return 0;
1324 }
1325
1326 /**
1327 * _ctl_diag_capability - return diag buffer capability
1328 * @ioc: per adapter object
1329 * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
1330 *
1331 * returns 1 when diag buffer support is enabled in firmware
1332 */
1333 static u8
1334 _ctl_diag_capability(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type)
1335 {
1336 u8 rc = 0;
1337
1338 switch (buffer_type) {
1339 case MPI2_DIAG_BUF_TYPE_TRACE:
1340 if (ioc->facts.IOCCapabilities &
1341 MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
1342 rc = 1;
1343 break;
1344 case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
1345 if (ioc->facts.IOCCapabilities &
1346 MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
1347 rc = 1;
1348 break;
1349 case MPI2_DIAG_BUF_TYPE_EXTENDED:
1350 if (ioc->facts.IOCCapabilities &
1351 MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER)
1352 rc = 1;
1353 }
1354
1355 return rc;
1356 }
1357
1358 /**
1359 * _ctl_diag_register_2 - wrapper for registering diag buffer support
1360 * @ioc: per adapter object
1361 * @diag_register: the diag_register struct passed in from user space
1362 *
1363 */
1364 static long
1365 _ctl_diag_register_2(struct MPT2SAS_ADAPTER *ioc,
1366 struct mpt2_diag_register *diag_register)
1367 {
1368 int rc, i;
1369 void *request_data = NULL;
1370 dma_addr_t request_data_dma;
1371 u32 request_data_sz = 0;
1372 Mpi2DiagBufferPostRequest_t *mpi_request;
1373 Mpi2DiagBufferPostReply_t *mpi_reply;
1374 u8 buffer_type;
1375 unsigned long timeleft;
1376 u16 smid;
1377 u16 ioc_status;
1378 u8 issue_reset = 0;
1379
1380 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1381 __func__));
1382
1383 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1384 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1385 ioc->name, __func__);
1386 rc = -EAGAIN;
1387 goto out;
1388 }
1389
1390 buffer_type = diag_register->buffer_type;
1391 if (!_ctl_diag_capability(ioc, buffer_type)) {
1392 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1393 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1394 return -EPERM;
1395 }
1396
1397 if (ioc->diag_buffer_status[buffer_type] &
1398 MPT2_DIAG_BUFFER_IS_REGISTERED) {
1399 printk(MPT2SAS_ERR_FMT "%s: already has a registered "
1400 "buffer for buffer_type(0x%02x)\n", ioc->name, __func__,
1401 buffer_type);
1402 return -EINVAL;
1403 }
1404
1405 if (diag_register->requested_buffer_size % 4) {
1406 printk(MPT2SAS_ERR_FMT "%s: the requested_buffer_size "
1407 "is not 4 byte aligned\n", ioc->name, __func__);
1408 return -EINVAL;
1409 }
1410
1411 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1412 if (!smid) {
1413 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1414 ioc->name, __func__);
1415 rc = -EAGAIN;
1416 goto out;
1417 }
1418
1419 rc = 0;
1420 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1421 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1422 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1423 ioc->ctl_cmds.smid = smid;
1424
1425 request_data = ioc->diag_buffer[buffer_type];
1426 request_data_sz = diag_register->requested_buffer_size;
1427 ioc->unique_id[buffer_type] = diag_register->unique_id;
1428 ioc->diag_buffer_status[buffer_type] = 0;
1429 memcpy(ioc->product_specific[buffer_type],
1430 diag_register->product_specific, MPT2_PRODUCT_SPECIFIC_DWORDS);
1431 ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags;
1432
1433 if (request_data) {
1434 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1435 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
1436 pci_free_consistent(ioc->pdev,
1437 ioc->diag_buffer_sz[buffer_type],
1438 request_data, request_data_dma);
1439 request_data = NULL;
1440 }
1441 }
1442
1443 if (request_data == NULL) {
1444 ioc->diag_buffer_sz[buffer_type] = 0;
1445 ioc->diag_buffer_dma[buffer_type] = 0;
1446 request_data = pci_alloc_consistent(
1447 ioc->pdev, request_data_sz, &request_data_dma);
1448 if (request_data == NULL) {
1449 printk(MPT2SAS_ERR_FMT "%s: failed allocating memory"
1450 " for diag buffers, requested size(%d)\n",
1451 ioc->name, __func__, request_data_sz);
1452 mpt2sas_base_free_smid(ioc, smid);
1453 return -ENOMEM;
1454 }
1455 ioc->diag_buffer[buffer_type] = request_data;
1456 ioc->diag_buffer_sz[buffer_type] = request_data_sz;
1457 ioc->diag_buffer_dma[buffer_type] = request_data_dma;
1458 }
1459
1460 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1461 mpi_request->BufferType = diag_register->buffer_type;
1462 mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags);
1463 mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
1464 mpi_request->BufferLength = cpu_to_le32(request_data_sz);
1465 mpi_request->VF_ID = 0; /* TODO */
1466 mpi_request->VP_ID = 0;
1467
1468 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: diag_buffer(0x%p), "
1469 "dma(0x%llx), sz(%d)\n", ioc->name, __func__, request_data,
1470 (unsigned long long)request_data_dma,
1471 le32_to_cpu(mpi_request->BufferLength)));
1472
1473 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1474 mpi_request->ProductSpecific[i] =
1475 cpu_to_le32(ioc->product_specific[buffer_type][i]);
1476
1477 mpt2sas_base_put_smid_default(ioc, smid);
1478 init_completion(&ioc->ctl_cmds.done);
1479 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1480 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1481
1482 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1483 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1484 __func__);
1485 _debug_dump_mf(mpi_request,
1486 sizeof(Mpi2DiagBufferPostRequest_t)/4);
1487 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1488 issue_reset = 1;
1489 goto issue_host_reset;
1490 }
1491
1492 /* process the completed Reply Message Frame */
1493 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1494 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1495 ioc->name, __func__);
1496 rc = -EFAULT;
1497 goto out;
1498 }
1499
1500 mpi_reply = ioc->ctl_cmds.reply;
1501 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1502
1503 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1504 ioc->diag_buffer_status[buffer_type] |=
1505 MPT2_DIAG_BUFFER_IS_REGISTERED;
1506 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
1507 ioc->name, __func__));
1508 } else {
1509 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
1510 "log_info(0x%08x)\n", ioc->name, __func__,
1511 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1512 rc = -EFAULT;
1513 }
1514
1515 issue_host_reset:
1516 if (issue_reset)
1517 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1518 FORCE_BIG_HAMMER);
1519
1520 out:
1521
1522 if (rc && request_data)
1523 pci_free_consistent(ioc->pdev, request_data_sz,
1524 request_data, request_data_dma);
1525
1526 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1527 return rc;
1528 }
1529
1530 /**
1531 * mpt2sas_enable_diag_buffer - enabling diag_buffers support driver load time
1532 * @ioc: per adapter object
1533 * @bits_to_register: bitwise field where trace is bit 0, and snapshot is bit 1
1534 *
1535 * This is called when command line option diag_buffer_enable is enabled
1536 * at driver load time.
1537 */
1538 void
1539 mpt2sas_enable_diag_buffer(struct MPT2SAS_ADAPTER *ioc, u8 bits_to_register)
1540 {
1541 struct mpt2_diag_register diag_register;
1542
1543 memset(&diag_register, 0, sizeof(struct mpt2_diag_register));
1544
1545 if (bits_to_register & 1) {
1546 printk(MPT2SAS_INFO_FMT "registering trace buffer support\n",
1547 ioc->name);
1548 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
1549 /* register for 1MB buffers */
1550 diag_register.requested_buffer_size = (1024 * 1024);
1551 diag_register.unique_id = 0x7075900;
1552 _ctl_diag_register_2(ioc, &diag_register);
1553 }
1554
1555 if (bits_to_register & 2) {
1556 printk(MPT2SAS_INFO_FMT "registering snapshot buffer support\n",
1557 ioc->name);
1558 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT;
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 if (bits_to_register & 4) {
1566 printk(MPT2SAS_INFO_FMT "registering extended buffer support\n",
1567 ioc->name);
1568 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_EXTENDED;
1569 /* register for 2MB buffers */
1570 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1571 diag_register.unique_id = 0x7075901;
1572 _ctl_diag_register_2(ioc, &diag_register);
1573 }
1574 }
1575
1576 /**
1577 * _ctl_diag_register - application register with driver
1578 * @arg - user space buffer containing ioctl content
1579 * @state - NON_BLOCKING or BLOCKING
1580 *
1581 * This will allow the driver to setup any required buffers that will be
1582 * needed by firmware to communicate with the driver.
1583 */
1584 static long
1585 _ctl_diag_register(void __user *arg, enum block_state state)
1586 {
1587 struct mpt2_diag_register karg;
1588 struct MPT2SAS_ADAPTER *ioc;
1589 long rc;
1590
1591 if (copy_from_user(&karg, arg, sizeof(karg))) {
1592 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1593 __FILE__, __LINE__, __func__);
1594 return -EFAULT;
1595 }
1596 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1597 return -ENODEV;
1598
1599 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1600 return -EAGAIN;
1601 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1602 return -ERESTARTSYS;
1603 rc = _ctl_diag_register_2(ioc, &karg);
1604 mutex_unlock(&ioc->ctl_cmds.mutex);
1605 return rc;
1606 }
1607
1608 /**
1609 * _ctl_diag_unregister - application unregister with driver
1610 * @arg - user space buffer containing ioctl content
1611 *
1612 * This will allow the driver to cleanup any memory allocated for diag
1613 * messages and to free up any resources.
1614 */
1615 static long
1616 _ctl_diag_unregister(void __user *arg)
1617 {
1618 struct mpt2_diag_unregister karg;
1619 struct MPT2SAS_ADAPTER *ioc;
1620 void *request_data;
1621 dma_addr_t request_data_dma;
1622 u32 request_data_sz;
1623 u8 buffer_type;
1624
1625 if (copy_from_user(&karg, arg, sizeof(karg))) {
1626 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1627 __FILE__, __LINE__, __func__);
1628 return -EFAULT;
1629 }
1630 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1631 return -ENODEV;
1632
1633 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1634 __func__));
1635
1636 buffer_type = karg.unique_id & 0x000000ff;
1637 if (!_ctl_diag_capability(ioc, buffer_type)) {
1638 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1639 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1640 return -EPERM;
1641 }
1642
1643 if ((ioc->diag_buffer_status[buffer_type] &
1644 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1645 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1646 "registered\n", ioc->name, __func__, buffer_type);
1647 return -EINVAL;
1648 }
1649 if ((ioc->diag_buffer_status[buffer_type] &
1650 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
1651 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) has not been "
1652 "released\n", ioc->name, __func__, buffer_type);
1653 return -EINVAL;
1654 }
1655
1656 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1657 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1658 "registered\n", ioc->name, __func__, karg.unique_id);
1659 return -EINVAL;
1660 }
1661
1662 request_data = ioc->diag_buffer[buffer_type];
1663 if (!request_data) {
1664 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1665 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1666 return -ENOMEM;
1667 }
1668
1669 request_data_sz = ioc->diag_buffer_sz[buffer_type];
1670 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1671 pci_free_consistent(ioc->pdev, request_data_sz,
1672 request_data, request_data_dma);
1673 ioc->diag_buffer[buffer_type] = NULL;
1674 ioc->diag_buffer_status[buffer_type] = 0;
1675 return 0;
1676 }
1677
1678 /**
1679 * _ctl_diag_query - query relevant info associated with diag buffers
1680 * @arg - user space buffer containing ioctl content
1681 *
1682 * The application will send only buffer_type and unique_id. Driver will
1683 * inspect unique_id first, if valid, fill in all the info. If unique_id is
1684 * 0x00, the driver will return info specified by Buffer Type.
1685 */
1686 static long
1687 _ctl_diag_query(void __user *arg)
1688 {
1689 struct mpt2_diag_query karg;
1690 struct MPT2SAS_ADAPTER *ioc;
1691 void *request_data;
1692 int i;
1693 u8 buffer_type;
1694
1695 if (copy_from_user(&karg, arg, sizeof(karg))) {
1696 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1697 __FILE__, __LINE__, __func__);
1698 return -EFAULT;
1699 }
1700 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1701 return -ENODEV;
1702
1703 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1704 __func__));
1705
1706 karg.application_flags = 0;
1707 buffer_type = karg.buffer_type;
1708
1709 if (!_ctl_diag_capability(ioc, buffer_type)) {
1710 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1711 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1712 return -EPERM;
1713 }
1714
1715 if ((ioc->diag_buffer_status[buffer_type] &
1716 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1717 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1718 "registered\n", ioc->name, __func__, buffer_type);
1719 return -EINVAL;
1720 }
1721
1722 if (karg.unique_id & 0xffffff00) {
1723 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1724 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1725 "registered\n", ioc->name, __func__,
1726 karg.unique_id);
1727 return -EINVAL;
1728 }
1729 }
1730
1731 request_data = ioc->diag_buffer[buffer_type];
1732 if (!request_data) {
1733 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1734 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1735 return -ENOMEM;
1736 }
1737
1738 if (ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_RELEASED)
1739 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1740 MPT2_APP_FLAGS_BUFFER_VALID);
1741 else
1742 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1743 MPT2_APP_FLAGS_BUFFER_VALID |
1744 MPT2_APP_FLAGS_FW_BUFFER_ACCESS);
1745
1746 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1747 karg.product_specific[i] =
1748 ioc->product_specific[buffer_type][i];
1749
1750 karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
1751 karg.driver_added_buffer_size = 0;
1752 karg.unique_id = ioc->unique_id[buffer_type];
1753 karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];
1754
1755 if (copy_to_user(arg, &karg, sizeof(struct mpt2_diag_query))) {
1756 printk(MPT2SAS_ERR_FMT "%s: unable to write mpt2_diag_query "
1757 "data @ %p\n", ioc->name, __func__, arg);
1758 return -EFAULT;
1759 }
1760 return 0;
1761 }
1762
1763 /**
1764 * _ctl_send_release - Diag Release Message
1765 * @ioc: per adapter object
1766 * @buffer_type - specifies either TRACE, SNAPSHOT, or EXTENDED
1767 * @issue_reset - specifies whether host reset is required.
1768 *
1769 */
1770 static int
1771 _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type, u8 *issue_reset)
1772 {
1773 Mpi2DiagReleaseRequest_t *mpi_request;
1774 Mpi2DiagReleaseReply_t *mpi_reply;
1775 u16 smid;
1776 u16 ioc_status;
1777 u32 ioc_state;
1778 int rc;
1779 unsigned long timeleft;
1780
1781 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1782 __func__));
1783
1784 rc = 0;
1785 *issue_reset = 0;
1786
1787 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1788 if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1789 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
1790 "skipping due to FAULT state\n", ioc->name,
1791 __func__));
1792 rc = -EAGAIN;
1793 goto out;
1794 }
1795
1796 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1797 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1798 ioc->name, __func__);
1799 rc = -EAGAIN;
1800 goto out;
1801 }
1802
1803 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1804 if (!smid) {
1805 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1806 ioc->name, __func__);
1807 rc = -EAGAIN;
1808 goto out;
1809 }
1810
1811 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1812 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1813 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1814 ioc->ctl_cmds.smid = smid;
1815
1816 mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
1817 mpi_request->BufferType = buffer_type;
1818 mpi_request->VF_ID = 0; /* TODO */
1819 mpi_request->VP_ID = 0;
1820
1821 mpt2sas_base_put_smid_default(ioc, smid);
1822 init_completion(&ioc->ctl_cmds.done);
1823 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1824 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1825
1826 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1827 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1828 __func__);
1829 _debug_dump_mf(mpi_request,
1830 sizeof(Mpi2DiagReleaseRequest_t)/4);
1831 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1832 *issue_reset = 1;
1833 rc = -EFAULT;
1834 goto out;
1835 }
1836
1837 /* process the completed Reply Message Frame */
1838 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1839 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1840 ioc->name, __func__);
1841 rc = -EFAULT;
1842 goto out;
1843 }
1844
1845 mpi_reply = ioc->ctl_cmds.reply;
1846 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1847
1848 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1849 ioc->diag_buffer_status[buffer_type] |=
1850 MPT2_DIAG_BUFFER_IS_RELEASED;
1851 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
1852 ioc->name, __func__));
1853 } else {
1854 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
1855 "log_info(0x%08x)\n", ioc->name, __func__,
1856 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1857 rc = -EFAULT;
1858 }
1859
1860 out:
1861 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1862 return rc;
1863 }
1864
1865 /**
1866 * _ctl_diag_release - request to send Diag Release Message to firmware
1867 * @arg - user space buffer containing ioctl content
1868 * @state - NON_BLOCKING or BLOCKING
1869 *
1870 * This allows ownership of the specified buffer to returned to the driver,
1871 * allowing an application to read the buffer without fear that firmware is
1872 * overwritting information in the buffer.
1873 */
1874 static long
1875 _ctl_diag_release(void __user *arg, enum block_state state)
1876 {
1877 struct mpt2_diag_release karg;
1878 struct MPT2SAS_ADAPTER *ioc;
1879 void *request_data;
1880 int rc;
1881 u8 buffer_type;
1882 u8 issue_reset = 0;
1883
1884 if (copy_from_user(&karg, arg, sizeof(karg))) {
1885 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1886 __FILE__, __LINE__, __func__);
1887 return -EFAULT;
1888 }
1889 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1890 return -ENODEV;
1891
1892 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1893 __func__));
1894
1895 buffer_type = karg.unique_id & 0x000000ff;
1896 if (!_ctl_diag_capability(ioc, buffer_type)) {
1897 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1898 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1899 return -EPERM;
1900 }
1901
1902 if ((ioc->diag_buffer_status[buffer_type] &
1903 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1904 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1905 "registered\n", ioc->name, __func__, buffer_type);
1906 return -EINVAL;
1907 }
1908
1909 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1910 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1911 "registered\n", ioc->name, __func__, karg.unique_id);
1912 return -EINVAL;
1913 }
1914
1915 if (ioc->diag_buffer_status[buffer_type] &
1916 MPT2_DIAG_BUFFER_IS_RELEASED) {
1917 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1918 "is already released\n", ioc->name, __func__,
1919 buffer_type);
1920 return 0;
1921 }
1922
1923 request_data = ioc->diag_buffer[buffer_type];
1924
1925 if (!request_data) {
1926 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1927 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1928 return -ENOMEM;
1929 }
1930
1931 /* buffers were released by due to host reset */
1932 if ((ioc->diag_buffer_status[buffer_type] &
1933 MPT2_DIAG_BUFFER_IS_DIAG_RESET)) {
1934 ioc->diag_buffer_status[buffer_type] |=
1935 MPT2_DIAG_BUFFER_IS_RELEASED;
1936 ioc->diag_buffer_status[buffer_type] &=
1937 ~MPT2_DIAG_BUFFER_IS_DIAG_RESET;
1938 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1939 "was released due to host reset\n", ioc->name, __func__,
1940 buffer_type);
1941 return 0;
1942 }
1943
1944 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1945 return -EAGAIN;
1946 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1947 return -ERESTARTSYS;
1948
1949 rc = _ctl_send_release(ioc, buffer_type, &issue_reset);
1950
1951 if (issue_reset)
1952 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1953 FORCE_BIG_HAMMER);
1954
1955 mutex_unlock(&ioc->ctl_cmds.mutex);
1956 return rc;
1957 }
1958
1959 /**
1960 * _ctl_diag_read_buffer - request for copy of the diag buffer
1961 * @arg - user space buffer containing ioctl content
1962 * @state - NON_BLOCKING or BLOCKING
1963 */
1964 static long
1965 _ctl_diag_read_buffer(void __user *arg, enum block_state state)
1966 {
1967 struct mpt2_diag_read_buffer karg;
1968 struct mpt2_diag_read_buffer __user *uarg = arg;
1969 struct MPT2SAS_ADAPTER *ioc;
1970 void *request_data, *diag_data;
1971 Mpi2DiagBufferPostRequest_t *mpi_request;
1972 Mpi2DiagBufferPostReply_t *mpi_reply;
1973 int rc, i;
1974 u8 buffer_type;
1975 unsigned long timeleft, request_size, copy_size;
1976 u16 smid;
1977 u16 ioc_status;
1978 u8 issue_reset = 0;
1979
1980 if (copy_from_user(&karg, arg, sizeof(karg))) {
1981 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1982 __FILE__, __LINE__, __func__);
1983 return -EFAULT;
1984 }
1985 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1986 return -ENODEV;
1987
1988 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1989 __func__));
1990
1991 buffer_type = karg.unique_id & 0x000000ff;
1992 if (!_ctl_diag_capability(ioc, buffer_type)) {
1993 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1994 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1995 return -EPERM;
1996 }
1997
1998 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1999 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
2000 "registered\n", ioc->name, __func__, karg.unique_id);
2001 return -EINVAL;
2002 }
2003
2004 request_data = ioc->diag_buffer[buffer_type];
2005 if (!request_data) {
2006 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
2007 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
2008 return -ENOMEM;
2009 }
2010
2011 request_size = ioc->diag_buffer_sz[buffer_type];
2012
2013 if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
2014 printk(MPT2SAS_ERR_FMT "%s: either the starting_offset "
2015 "or bytes_to_read are not 4 byte aligned\n", ioc->name,
2016 __func__);
2017 return -EINVAL;
2018 }
2019
2020 if (karg.starting_offset > request_size)
2021 return -EINVAL;
2022
2023 diag_data = (void *)(request_data + karg.starting_offset);
2024 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: diag_buffer(%p), "
2025 "offset(%d), sz(%d)\n", ioc->name, __func__,
2026 diag_data, karg.starting_offset, karg.bytes_to_read));
2027
2028 /* Truncate data on requests that are too large */
2029 if ((diag_data + karg.bytes_to_read < diag_data) ||
2030 (diag_data + karg.bytes_to_read > request_data + request_size))
2031 copy_size = request_size - karg.starting_offset;
2032 else
2033 copy_size = karg.bytes_to_read;
2034
2035 if (copy_to_user((void __user *)uarg->diagnostic_data,
2036 diag_data, copy_size)) {
2037 printk(MPT2SAS_ERR_FMT "%s: Unable to write "
2038 "mpt_diag_read_buffer_t data @ %p\n", ioc->name,
2039 __func__, diag_data);
2040 return -EFAULT;
2041 }
2042
2043 if ((karg.flags & MPT2_FLAGS_REREGISTER) == 0)
2044 return 0;
2045
2046 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: Reregister "
2047 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type));
2048 if ((ioc->diag_buffer_status[buffer_type] &
2049 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
2050 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2051 "buffer_type(0x%02x) is still registered\n", ioc->name,
2052 __func__, buffer_type));
2053 return 0;
2054 }
2055 /* Get a free request frame and save the message context.
2056 */
2057 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
2058 return -EAGAIN;
2059 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
2060 return -ERESTARTSYS;
2061
2062 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
2063 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
2064 ioc->name, __func__);
2065 rc = -EAGAIN;
2066 goto out;
2067 }
2068
2069 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
2070 if (!smid) {
2071 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
2072 ioc->name, __func__);
2073 rc = -EAGAIN;
2074 goto out;
2075 }
2076
2077 rc = 0;
2078 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
2079 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
2080 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
2081 ioc->ctl_cmds.smid = smid;
2082
2083 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
2084 mpi_request->BufferType = buffer_type;
2085 mpi_request->BufferLength =
2086 cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
2087 mpi_request->BufferAddress =
2088 cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
2089 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
2090 mpi_request->ProductSpecific[i] =
2091 cpu_to_le32(ioc->product_specific[buffer_type][i]);
2092 mpi_request->VF_ID = 0; /* TODO */
2093 mpi_request->VP_ID = 0;
2094
2095 mpt2sas_base_put_smid_default(ioc, smid);
2096 init_completion(&ioc->ctl_cmds.done);
2097 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
2098 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
2099
2100 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
2101 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
2102 __func__);
2103 _debug_dump_mf(mpi_request,
2104 sizeof(Mpi2DiagBufferPostRequest_t)/4);
2105 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
2106 issue_reset = 1;
2107 goto issue_host_reset;
2108 }
2109
2110 /* process the completed Reply Message Frame */
2111 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
2112 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
2113 ioc->name, __func__);
2114 rc = -EFAULT;
2115 goto out;
2116 }
2117
2118 mpi_reply = ioc->ctl_cmds.reply;
2119 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
2120
2121 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
2122 ioc->diag_buffer_status[buffer_type] |=
2123 MPT2_DIAG_BUFFER_IS_REGISTERED;
2124 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: success\n",
2125 ioc->name, __func__));
2126 } else {
2127 printk(MPT2SAS_INFO_FMT "%s: ioc_status(0x%04x) "
2128 "log_info(0x%08x)\n", ioc->name, __func__,
2129 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
2130 rc = -EFAULT;
2131 }
2132
2133 issue_host_reset:
2134 if (issue_reset)
2135 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2136 FORCE_BIG_HAMMER);
2137
2138 out:
2139
2140 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
2141 mutex_unlock(&ioc->ctl_cmds.mutex);
2142 return rc;
2143 }
2144
2145 /**
2146 * _ctl_ioctl_main - main ioctl entry point
2147 * @file - (struct file)
2148 * @cmd - ioctl opcode
2149 * @arg -
2150 */
2151 static long
2152 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg)
2153 {
2154 enum block_state state;
2155 long ret = -EINVAL;
2156
2157 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING :
2158 BLOCKING;
2159
2160 switch (cmd) {
2161 case MPT2IOCINFO:
2162 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_iocinfo))
2163 ret = _ctl_getiocinfo(arg);
2164 break;
2165 case MPT2COMMAND:
2166 {
2167 struct mpt2_ioctl_command karg;
2168 struct mpt2_ioctl_command __user *uarg;
2169 struct MPT2SAS_ADAPTER *ioc;
2170
2171 if (copy_from_user(&karg, arg, sizeof(karg))) {
2172 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2173 __FILE__, __LINE__, __func__);
2174 return -EFAULT;
2175 }
2176
2177 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
2178 !ioc)
2179 return -ENODEV;
2180
2181 if (ioc->shost_recovery || ioc->pci_error_recovery)
2182 return -EAGAIN;
2183
2184 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_command)) {
2185 uarg = arg;
2186 ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
2187 }
2188 break;
2189 }
2190 case MPT2EVENTQUERY:
2191 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventquery))
2192 ret = _ctl_eventquery(arg);
2193 break;
2194 case MPT2EVENTENABLE:
2195 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventenable))
2196 ret = _ctl_eventenable(arg);
2197 break;
2198 case MPT2EVENTREPORT:
2199 ret = _ctl_eventreport(arg);
2200 break;
2201 case MPT2HARDRESET:
2202 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_diag_reset))
2203 ret = _ctl_do_reset(arg);
2204 break;
2205 case MPT2BTDHMAPPING:
2206 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_btdh_mapping))
2207 ret = _ctl_btdh_mapping(arg);
2208 break;
2209 case MPT2DIAGREGISTER:
2210 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_register))
2211 ret = _ctl_diag_register(arg, state);
2212 break;
2213 case MPT2DIAGUNREGISTER:
2214 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_unregister))
2215 ret = _ctl_diag_unregister(arg);
2216 break;
2217 case MPT2DIAGQUERY:
2218 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_query))
2219 ret = _ctl_diag_query(arg);
2220 break;
2221 case MPT2DIAGRELEASE:
2222 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_release))
2223 ret = _ctl_diag_release(arg, state);
2224 break;
2225 case MPT2DIAGREADBUFFER:
2226 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_read_buffer))
2227 ret = _ctl_diag_read_buffer(arg, state);
2228 break;
2229 default:
2230 {
2231 struct mpt2_ioctl_command karg;
2232 struct MPT2SAS_ADAPTER *ioc;
2233
2234 if (copy_from_user(&karg, arg, sizeof(karg))) {
2235 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2236 __FILE__, __LINE__, __func__);
2237 return -EFAULT;
2238 }
2239
2240 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
2241 !ioc)
2242 return -ENODEV;
2243
2244 dctlprintk(ioc, printk(MPT2SAS_INFO_FMT
2245 "unsupported ioctl opcode(0x%08x)\n", ioc->name, cmd));
2246 break;
2247 }
2248 }
2249 return ret;
2250 }
2251
2252 /**
2253 * _ctl_ioctl - main ioctl entry point (unlocked)
2254 * @file - (struct file)
2255 * @cmd - ioctl opcode
2256 * @arg -
2257 */
2258 static long
2259 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2260 {
2261 long ret;
2262
2263 mutex_lock(&_ctl_mutex);
2264 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
2265 mutex_unlock(&_ctl_mutex);
2266 return ret;
2267 }
2268
2269 #ifdef CONFIG_COMPAT
2270 /**
2271 * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
2272 * @file - (struct file)
2273 * @cmd - ioctl opcode
2274 * @arg - (struct mpt2_ioctl_command32)
2275 *
2276 * MPT2COMMAND32 - Handle 32bit applications running on 64bit os.
2277 */
2278 static long
2279 _ctl_compat_mpt_command(struct file *file, unsigned cmd, unsigned long arg)
2280 {
2281 struct mpt2_ioctl_command32 karg32;
2282 struct mpt2_ioctl_command32 __user *uarg;
2283 struct mpt2_ioctl_command karg;
2284 struct MPT2SAS_ADAPTER *ioc;
2285 enum block_state state;
2286
2287 if (_IOC_SIZE(cmd) != sizeof(struct mpt2_ioctl_command32))
2288 return -EINVAL;
2289
2290 uarg = (struct mpt2_ioctl_command32 __user *) arg;
2291
2292 if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
2293 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2294 __FILE__, __LINE__, __func__);
2295 return -EFAULT;
2296 }
2297 if (_ctl_verify_adapter(karg32.hdr.ioc_number, &ioc) == -1 || !ioc)
2298 return -ENODEV;
2299
2300 if (ioc->shost_recovery || ioc->pci_error_recovery)
2301 return -EAGAIN;
2302
2303 memset(&karg, 0, sizeof(struct mpt2_ioctl_command));
2304 karg.hdr.ioc_number = karg32.hdr.ioc_number;
2305 karg.hdr.port_number = karg32.hdr.port_number;
2306 karg.hdr.max_data_size = karg32.hdr.max_data_size;
2307 karg.timeout = karg32.timeout;
2308 karg.max_reply_bytes = karg32.max_reply_bytes;
2309 karg.data_in_size = karg32.data_in_size;
2310 karg.data_out_size = karg32.data_out_size;
2311 karg.max_sense_bytes = karg32.max_sense_bytes;
2312 karg.data_sge_offset = karg32.data_sge_offset;
2313 karg.reply_frame_buf_ptr = compat_ptr(karg32.reply_frame_buf_ptr);
2314 karg.data_in_buf_ptr = compat_ptr(karg32.data_in_buf_ptr);
2315 karg.data_out_buf_ptr = compat_ptr(karg32.data_out_buf_ptr);
2316 karg.sense_data_ptr = compat_ptr(karg32.sense_data_ptr);
2317 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
2318 return _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
2319 }
2320
2321 /**
2322 * _ctl_ioctl_compat - main ioctl entry point (compat)
2323 * @file -
2324 * @cmd -
2325 * @arg -
2326 *
2327 * This routine handles 32 bit applications in 64bit os.
2328 */
2329 static long
2330 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2331 {
2332 long ret;
2333
2334 mutex_lock(&_ctl_mutex);
2335 if (cmd == MPT2COMMAND32)
2336 ret = _ctl_compat_mpt_command(file, cmd, arg);
2337 else
2338 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
2339 mutex_unlock(&_ctl_mutex);
2340 return ret;
2341 }
2342 #endif
2343
2344 /* scsi host attributes */
2345
2346 /**
2347 * _ctl_version_fw_show - firmware 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_fw_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 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2361 (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2362 (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2363 (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2364 ioc->facts.FWVersion.Word & 0x000000FF);
2365 }
2366 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL);
2367
2368 /**
2369 * _ctl_version_bios_show - bios version
2370 * @cdev - pointer to embedded class device
2371 * @buf - the buffer returned
2372 *
2373 * A sysfs 'read-only' shost attribute.
2374 */
2375 static ssize_t
2376 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr,
2377 char *buf)
2378 {
2379 struct Scsi_Host *shost = class_to_shost(cdev);
2380 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2381
2382 u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2383
2384 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2385 (version & 0xFF000000) >> 24,
2386 (version & 0x00FF0000) >> 16,
2387 (version & 0x0000FF00) >> 8,
2388 version & 0x000000FF);
2389 }
2390 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL);
2391
2392 /**
2393 * _ctl_version_mpi_show - MPI (message passing interface) version
2394 * @cdev - pointer to embedded class device
2395 * @buf - the buffer returned
2396 *
2397 * A sysfs 'read-only' shost attribute.
2398 */
2399 static ssize_t
2400 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr,
2401 char *buf)
2402 {
2403 struct Scsi_Host *shost = class_to_shost(cdev);
2404 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2405
2406 return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
2407 ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
2408 }
2409 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL);
2410
2411 /**
2412 * _ctl_version_product_show - product name
2413 * @cdev - pointer to embedded class device
2414 * @buf - the buffer returned
2415 *
2416 * A sysfs 'read-only' shost attribute.
2417 */
2418 static ssize_t
2419 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr,
2420 char *buf)
2421 {
2422 struct Scsi_Host *shost = class_to_shost(cdev);
2423 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2424
2425 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
2426 }
2427 static DEVICE_ATTR(version_product, S_IRUGO,
2428 _ctl_version_product_show, NULL);
2429
2430 /**
2431 * _ctl_version_nvdata_persistent_show - ndvata persistent version
2432 * @cdev - pointer to embedded class device
2433 * @buf - the buffer returned
2434 *
2435 * A sysfs 'read-only' shost attribute.
2436 */
2437 static ssize_t
2438 _ctl_version_nvdata_persistent_show(struct device *cdev,
2439 struct device_attribute *attr, char *buf)
2440 {
2441 struct Scsi_Host *shost = class_to_shost(cdev);
2442 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2443
2444 return snprintf(buf, PAGE_SIZE, "%08xh\n",
2445 le32_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
2446 }
2447 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
2448 _ctl_version_nvdata_persistent_show, NULL);
2449
2450 /**
2451 * _ctl_version_nvdata_default_show - nvdata default version
2452 * @cdev - pointer to embedded class device
2453 * @buf - the buffer returned
2454 *
2455 * A sysfs 'read-only' shost attribute.
2456 */
2457 static ssize_t
2458 _ctl_version_nvdata_default_show(struct device *cdev,
2459 struct device_attribute *attr, char *buf)
2460 {
2461 struct Scsi_Host *shost = class_to_shost(cdev);
2462 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2463
2464 return snprintf(buf, PAGE_SIZE, "%08xh\n",
2465 le32_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
2466 }
2467 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
2468 _ctl_version_nvdata_default_show, NULL);
2469
2470 /**
2471 * _ctl_board_name_show - board name
2472 * @cdev - pointer to embedded class device
2473 * @buf - the buffer returned
2474 *
2475 * A sysfs 'read-only' shost attribute.
2476 */
2477 static ssize_t
2478 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr,
2479 char *buf)
2480 {
2481 struct Scsi_Host *shost = class_to_shost(cdev);
2482 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2483
2484 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
2485 }
2486 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL);
2487
2488 /**
2489 * _ctl_board_assembly_show - board assembly name
2490 * @cdev - pointer to embedded class device
2491 * @buf - the buffer returned
2492 *
2493 * A sysfs 'read-only' shost attribute.
2494 */
2495 static ssize_t
2496 _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr,
2497 char *buf)
2498 {
2499 struct Scsi_Host *shost = class_to_shost(cdev);
2500 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2501
2502 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
2503 }
2504 static DEVICE_ATTR(board_assembly, S_IRUGO,
2505 _ctl_board_assembly_show, NULL);
2506
2507 /**
2508 * _ctl_board_tracer_show - board tracer number
2509 * @cdev - pointer to embedded class device
2510 * @buf - the buffer returned
2511 *
2512 * A sysfs 'read-only' shost attribute.
2513 */
2514 static ssize_t
2515 _ctl_board_tracer_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, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
2522 }
2523 static DEVICE_ATTR(board_tracer, S_IRUGO,
2524 _ctl_board_tracer_show, NULL);
2525
2526 /**
2527 * _ctl_io_delay_show - io 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_io_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->io_missing_delay);
2544 }
2545 static DEVICE_ATTR(io_delay, S_IRUGO,
2546 _ctl_io_delay_show, NULL);
2547
2548 /**
2549 * _ctl_device_delay_show - device missing delay
2550 * @cdev - pointer to embedded class device
2551 * @buf - the buffer returned
2552 *
2553 * This is for firmware implemention for deboucing device
2554 * removal events.
2555 *
2556 * A sysfs 'read-only' shost attribute.
2557 */
2558 static ssize_t
2559 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr,
2560 char *buf)
2561 {
2562 struct Scsi_Host *shost = class_to_shost(cdev);
2563 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2564
2565 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
2566 }
2567 static DEVICE_ATTR(device_delay, S_IRUGO,
2568 _ctl_device_delay_show, NULL);
2569
2570 /**
2571 * _ctl_fw_queue_depth_show - global credits
2572 * @cdev - pointer to embedded class device
2573 * @buf - the buffer returned
2574 *
2575 * This is firmware queue depth limit
2576 *
2577 * A sysfs 'read-only' shost attribute.
2578 */
2579 static ssize_t
2580 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
2581 char *buf)
2582 {
2583 struct Scsi_Host *shost = class_to_shost(cdev);
2584 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2585
2586 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
2587 }
2588 static DEVICE_ATTR(fw_queue_depth, S_IRUGO,
2589 _ctl_fw_queue_depth_show, NULL);
2590
2591 /**
2592 * _ctl_sas_address_show - sas address
2593 * @cdev - pointer to embedded class device
2594 * @buf - the buffer returned
2595 *
2596 * This is the controller sas address
2597 *
2598 * A sysfs 'read-only' shost attribute.
2599 */
2600 static ssize_t
2601 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr,
2602 char *buf)
2603 {
2604 struct Scsi_Host *shost = class_to_shost(cdev);
2605 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2606
2607 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2608 (unsigned long long)ioc->sas_hba.sas_address);
2609 }
2610 static DEVICE_ATTR(host_sas_address, S_IRUGO,
2611 _ctl_host_sas_address_show, NULL);
2612
2613 /**
2614 * _ctl_logging_level_show - logging level
2615 * @cdev - pointer to embedded class device
2616 * @buf - the buffer returned
2617 *
2618 * A sysfs 'read/write' shost attribute.
2619 */
2620 static ssize_t
2621 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr,
2622 char *buf)
2623 {
2624 struct Scsi_Host *shost = class_to_shost(cdev);
2625 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2626
2627 return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
2628 }
2629 static ssize_t
2630 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr,
2631 const char *buf, size_t count)
2632 {
2633 struct Scsi_Host *shost = class_to_shost(cdev);
2634 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2635 int val = 0;
2636
2637 if (sscanf(buf, "%x", &val) != 1)
2638 return -EINVAL;
2639
2640 ioc->logging_level = val;
2641 printk(MPT2SAS_INFO_FMT "logging_level=%08xh\n", ioc->name,
2642 ioc->logging_level);
2643 return strlen(buf);
2644 }
2645 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
2646 _ctl_logging_level_show, _ctl_logging_level_store);
2647
2648 /* device attributes */
2649 /*
2650 * _ctl_fwfault_debug_show - show/store fwfault_debug
2651 * @cdev - pointer to embedded class device
2652 * @buf - the buffer returned
2653 *
2654 * mpt2sas_fwfault_debug is command line option
2655 * A sysfs 'read/write' shost attribute.
2656 */
2657 static ssize_t
2658 _ctl_fwfault_debug_show(struct device *cdev,
2659 struct device_attribute *attr, char *buf)
2660 {
2661 struct Scsi_Host *shost = class_to_shost(cdev);
2662 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2663
2664 return snprintf(buf, PAGE_SIZE, "%d\n", ioc->fwfault_debug);
2665 }
2666 static ssize_t
2667 _ctl_fwfault_debug_store(struct device *cdev,
2668 struct device_attribute *attr, const char *buf, size_t count)
2669 {
2670 struct Scsi_Host *shost = class_to_shost(cdev);
2671 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2672 int val = 0;
2673
2674 if (sscanf(buf, "%d", &val) != 1)
2675 return -EINVAL;
2676
2677 ioc->fwfault_debug = val;
2678 printk(MPT2SAS_INFO_FMT "fwfault_debug=%d\n", ioc->name,
2679 ioc->fwfault_debug);
2680 return strlen(buf);
2681 }
2682 static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR,
2683 _ctl_fwfault_debug_show, _ctl_fwfault_debug_store);
2684
2685
2686 /**
2687 * _ctl_ioc_reset_count_show - ioc reset count
2688 * @cdev - pointer to embedded class device
2689 * @buf - the buffer returned
2690 *
2691 * This is firmware queue depth limit
2692 *
2693 * A sysfs 'read-only' shost attribute.
2694 */
2695 static ssize_t
2696 _ctl_ioc_reset_count_show(struct device *cdev, struct device_attribute *attr,
2697 char *buf)
2698 {
2699 struct Scsi_Host *shost = class_to_shost(cdev);
2700 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2701
2702 return snprintf(buf, PAGE_SIZE, "%08d\n", ioc->ioc_reset_count);
2703 }
2704 static DEVICE_ATTR(ioc_reset_count, S_IRUGO,
2705 _ctl_ioc_reset_count_show, NULL);
2706
2707 struct DIAG_BUFFER_START {
2708 __le32 Size;
2709 __le32 DiagVersion;
2710 u8 BufferType;
2711 u8 Reserved[3];
2712 __le32 Reserved1;
2713 __le32 Reserved2;
2714 __le32 Reserved3;
2715 };
2716 /**
2717 * _ctl_host_trace_buffer_size_show - host buffer size (trace only)
2718 * @cdev - pointer to embedded class device
2719 * @buf - the buffer returned
2720 *
2721 * A sysfs 'read-only' shost attribute.
2722 */
2723 static ssize_t
2724 _ctl_host_trace_buffer_size_show(struct device *cdev,
2725 struct device_attribute *attr, char *buf)
2726 {
2727 struct Scsi_Host *shost = class_to_shost(cdev);
2728 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2729 u32 size = 0;
2730 struct DIAG_BUFFER_START *request_data;
2731
2732 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2733 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2734 "registered\n", ioc->name, __func__);
2735 return 0;
2736 }
2737
2738 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2739 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
2740 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2741 "registered\n", ioc->name, __func__);
2742 return 0;
2743 }
2744
2745 request_data = (struct DIAG_BUFFER_START *)
2746 ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE];
2747 if ((le32_to_cpu(request_data->DiagVersion) == 0x00000000 ||
2748 le32_to_cpu(request_data->DiagVersion) == 0x01000000) &&
2749 le32_to_cpu(request_data->Reserved3) == 0x4742444c)
2750 size = le32_to_cpu(request_data->Size);
2751
2752 ioc->ring_buffer_sz = size;
2753 return snprintf(buf, PAGE_SIZE, "%d\n", size);
2754 }
2755 static DEVICE_ATTR(host_trace_buffer_size, S_IRUGO,
2756 _ctl_host_trace_buffer_size_show, NULL);
2757
2758 /**
2759 * _ctl_host_trace_buffer_show - firmware ring buffer (trace only)
2760 * @cdev - pointer to embedded class device
2761 * @buf - the buffer returned
2762 *
2763 * A sysfs 'read/write' shost attribute.
2764 *
2765 * You will only be able to read 4k bytes of ring buffer at a time.
2766 * In order to read beyond 4k bytes, you will have to write out the
2767 * offset to the same attribute, it will move the pointer.
2768 */
2769 static ssize_t
2770 _ctl_host_trace_buffer_show(struct device *cdev, struct device_attribute *attr,
2771 char *buf)
2772 {
2773 struct Scsi_Host *shost = class_to_shost(cdev);
2774 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2775 void *request_data;
2776 u32 size;
2777
2778 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) {
2779 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2780 "registered\n", ioc->name, __func__);
2781 return 0;
2782 }
2783
2784 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2785 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
2786 printk(MPT2SAS_ERR_FMT "%s: host_trace_buffer is not "
2787 "registered\n", ioc->name, __func__);
2788 return 0;
2789 }
2790
2791 if (ioc->ring_buffer_offset > ioc->ring_buffer_sz)
2792 return 0;
2793
2794 size = ioc->ring_buffer_sz - ioc->ring_buffer_offset;
2795 size = (size > PAGE_SIZE) ? PAGE_SIZE : size;
2796 request_data = ioc->diag_buffer[0] + ioc->ring_buffer_offset;
2797 memcpy(buf, request_data, size);
2798 return size;
2799 }
2800
2801 static ssize_t
2802 _ctl_host_trace_buffer_store(struct device *cdev, struct device_attribute *attr,
2803 const char *buf, size_t count)
2804 {
2805 struct Scsi_Host *shost = class_to_shost(cdev);
2806 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2807 int val = 0;
2808
2809 if (sscanf(buf, "%d", &val) != 1)
2810 return -EINVAL;
2811
2812 ioc->ring_buffer_offset = val;
2813 return strlen(buf);
2814 }
2815 static DEVICE_ATTR(host_trace_buffer, S_IRUGO | S_IWUSR,
2816 _ctl_host_trace_buffer_show, _ctl_host_trace_buffer_store);
2817
2818 /*****************************************/
2819
2820 /**
2821 * _ctl_host_trace_buffer_enable_show - firmware ring buffer (trace only)
2822 * @cdev - pointer to embedded class device
2823 * @buf - the buffer returned
2824 *
2825 * A sysfs 'read/write' shost attribute.
2826 *
2827 * This is a mechnism to post/release host_trace_buffers
2828 */
2829 static ssize_t
2830 _ctl_host_trace_buffer_enable_show(struct device *cdev,
2831 struct device_attribute *attr, char *buf)
2832 {
2833 struct Scsi_Host *shost = class_to_shost(cdev);
2834 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2835
2836 if ((!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) ||
2837 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2838 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0))
2839 return snprintf(buf, PAGE_SIZE, "off\n");
2840 else if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2841 MPT2_DIAG_BUFFER_IS_RELEASED))
2842 return snprintf(buf, PAGE_SIZE, "release\n");
2843 else
2844 return snprintf(buf, PAGE_SIZE, "post\n");
2845 }
2846
2847 static ssize_t
2848 _ctl_host_trace_buffer_enable_store(struct device *cdev,
2849 struct device_attribute *attr, const char *buf, size_t count)
2850 {
2851 struct Scsi_Host *shost = class_to_shost(cdev);
2852 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2853 char str[10] = "";
2854 struct mpt2_diag_register diag_register;
2855 u8 issue_reset = 0;
2856
2857 if (sscanf(buf, "%s", str) != 1)
2858 return -EINVAL;
2859
2860 if (!strcmp(str, "post")) {
2861 /* exit out if host buffers are already posted */
2862 if ((ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) &&
2863 (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2864 MPT2_DIAG_BUFFER_IS_REGISTERED) &&
2865 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2866 MPT2_DIAG_BUFFER_IS_RELEASED) == 0))
2867 goto out;
2868 memset(&diag_register, 0, sizeof(struct mpt2_diag_register));
2869 printk(MPT2SAS_INFO_FMT "posting host trace buffers\n",
2870 ioc->name);
2871 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
2872 diag_register.requested_buffer_size = (1024 * 1024);
2873 diag_register.unique_id = 0x7075900;
2874 ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] = 0;
2875 _ctl_diag_register_2(ioc, &diag_register);
2876 } else if (!strcmp(str, "release")) {
2877 /* exit out if host buffers are already released */
2878 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE])
2879 goto out;
2880 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2881 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0)
2882 goto out;
2883 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
2884 MPT2_DIAG_BUFFER_IS_RELEASED))
2885 goto out;
2886 printk(MPT2SAS_INFO_FMT "releasing host trace buffer\n",
2887 ioc->name);
2888 _ctl_send_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE, &issue_reset);
2889 }
2890
2891 out:
2892 return strlen(buf);
2893 }
2894 static DEVICE_ATTR(host_trace_buffer_enable, S_IRUGO | S_IWUSR,
2895 _ctl_host_trace_buffer_enable_show, _ctl_host_trace_buffer_enable_store);
2896
2897 struct device_attribute *mpt2sas_host_attrs[] = {
2898 &dev_attr_version_fw,
2899 &dev_attr_version_bios,
2900 &dev_attr_version_mpi,
2901 &dev_attr_version_product,
2902 &dev_attr_version_nvdata_persistent,
2903 &dev_attr_version_nvdata_default,
2904 &dev_attr_board_name,
2905 &dev_attr_board_assembly,
2906 &dev_attr_board_tracer,
2907 &dev_attr_io_delay,
2908 &dev_attr_device_delay,
2909 &dev_attr_logging_level,
2910 &dev_attr_fwfault_debug,
2911 &dev_attr_fw_queue_depth,
2912 &dev_attr_host_sas_address,
2913 &dev_attr_ioc_reset_count,
2914 &dev_attr_host_trace_buffer_size,
2915 &dev_attr_host_trace_buffer,
2916 &dev_attr_host_trace_buffer_enable,
2917 NULL,
2918 };
2919
2920 /**
2921 * _ctl_device_sas_address_show - sas address
2922 * @cdev - pointer to embedded class device
2923 * @buf - the buffer returned
2924 *
2925 * This is the sas address for the target
2926 *
2927 * A sysfs 'read-only' shost attribute.
2928 */
2929 static ssize_t
2930 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr,
2931 char *buf)
2932 {
2933 struct scsi_device *sdev = to_scsi_device(dev);
2934 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2935
2936 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2937 (unsigned long long)sas_device_priv_data->sas_target->sas_address);
2938 }
2939 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL);
2940
2941 /**
2942 * _ctl_device_handle_show - device handle
2943 * @cdev - pointer to embedded class device
2944 * @buf - the buffer returned
2945 *
2946 * This is the firmware assigned device handle
2947 *
2948 * A sysfs 'read-only' shost attribute.
2949 */
2950 static ssize_t
2951 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr,
2952 char *buf)
2953 {
2954 struct scsi_device *sdev = to_scsi_device(dev);
2955 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2956
2957 return snprintf(buf, PAGE_SIZE, "0x%04x\n",
2958 sas_device_priv_data->sas_target->handle);
2959 }
2960 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL);
2961
2962 struct device_attribute *mpt2sas_dev_attrs[] = {
2963 &dev_attr_sas_address,
2964 &dev_attr_sas_device_handle,
2965 NULL,
2966 };
2967
2968 static const struct file_operations ctl_fops = {
2969 .owner = THIS_MODULE,
2970 .unlocked_ioctl = _ctl_ioctl,
2971 .release = _ctl_release,
2972 .poll = _ctl_poll,
2973 .fasync = _ctl_fasync,
2974 #ifdef CONFIG_COMPAT
2975 .compat_ioctl = _ctl_ioctl_compat,
2976 #endif
2977 .llseek = noop_llseek,
2978 };
2979
2980 static struct miscdevice ctl_dev = {
2981 .minor = MPT2SAS_MINOR,
2982 .name = MPT2SAS_DEV_NAME,
2983 .fops = &ctl_fops,
2984 };
2985
2986 /**
2987 * mpt2sas_ctl_init - main entry point for ctl.
2988 *
2989 */
2990 void
2991 mpt2sas_ctl_init(void)
2992 {
2993 async_queue = NULL;
2994 if (misc_register(&ctl_dev) < 0)
2995 printk(KERN_ERR "%s can't register misc device [minor=%d]\n",
2996 MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
2997
2998 init_waitqueue_head(&ctl_poll_wait);
2999 }
3000
3001 /**
3002 * mpt2sas_ctl_exit - exit point for ctl
3003 *
3004 */
3005 void
3006 mpt2sas_ctl_exit(void)
3007 {
3008 struct MPT2SAS_ADAPTER *ioc;
3009 int i;
3010
3011 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
3012
3013 /* free memory associated to diag buffers */
3014 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
3015 if (!ioc->diag_buffer[i])
3016 continue;
3017 pci_free_consistent(ioc->pdev, ioc->diag_buffer_sz[i],
3018 ioc->diag_buffer[i], ioc->diag_buffer_dma[i]);
3019 ioc->diag_buffer[i] = NULL;
3020 ioc->diag_buffer_status[i] = 0;
3021 }
3022
3023 kfree(ioc->event_log);
3024 }
3025 misc_deregister(&ctl_dev);
3026 }
3027
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