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x86/amd-iommu: Add per IOMMU reference counting
[linux/fpc-iii.git] / drivers / scsi / mpt2sas / mpt2sas_ctl.c
blob57d7246339067992792a5b24b81d3cdb0a2e0692
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) 2007-2009 LSI Corporation
7 * (mailto:DL-MPTFusionLinux@lsi.com)
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version 2
12 * of the License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * NO WARRANTY
20 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
21 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
22 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
23 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
24 * solely responsible for determining the appropriateness of using and
25 * distributing the Program and assumes all risks associated with its
26 * exercise of rights under this Agreement, including but not limited to
27 * the risks and costs of program errors, damage to or loss of data,
28 * programs or equipment, and unavailability or interruption of operations.
29
30 * DISCLAIMER OF LIABILITY
31 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
32 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
34 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
35 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
36 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
37 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
38
39 * You should have received a copy of the GNU General Public License
40 * along with this program; if not, write to the Free Software
41 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
42 * USA.
43 */
44
45 #include <linux/version.h>
46 #include <linux/kernel.h>
47 #include <linux/module.h>
48 #include <linux/errno.h>
49 #include <linux/init.h>
50 #include <linux/slab.h>
51 #include <linux/types.h>
52 #include <linux/pci.h>
53 #include <linux/delay.h>
54 #include <linux/smp_lock.h>
55 #include <linux/compat.h>
56 #include <linux/poll.h>
57
58 #include <linux/io.h>
59 #include <linux/uaccess.h>
60
61 #include "mpt2sas_base.h"
62 #include "mpt2sas_ctl.h"
63
64 static struct fasync_struct *async_queue;
65 static DECLARE_WAIT_QUEUE_HEAD(ctl_poll_wait);
66
67 static int _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type,
68 u8 *issue_reset);
69
70 /**
71 * enum block_state - blocking state
72 * @NON_BLOCKING: non blocking
73 * @BLOCKING: blocking
74 *
75 * These states are for ioctls that need to wait for a response
76 * from firmware, so they probably require sleep.
77 */
78 enum block_state {
79 NON_BLOCKING,
80 BLOCKING,
81 };
82
83 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
84 /**
85 * _ctl_display_some_debug - debug routine
86 * @ioc: per adapter object
87 * @smid: system request message index
88 * @calling_function_name: string pass from calling function
89 * @mpi_reply: reply message frame
90 * Context: none.
91 *
92 * Function for displaying debug info helpfull when debugging issues
93 * in this module.
94 */
95 static void
96 _ctl_display_some_debug(struct MPT2SAS_ADAPTER *ioc, u16 smid,
97 char *calling_function_name, MPI2DefaultReply_t *mpi_reply)
98 {
99 Mpi2ConfigRequest_t *mpi_request;
100 char *desc = NULL;
101
102 if (!(ioc->logging_level & MPT_DEBUG_IOCTL))
103 return;
104
105 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
106 switch (mpi_request->Function) {
107 case MPI2_FUNCTION_SCSI_IO_REQUEST:
108 {
109 Mpi2SCSIIORequest_t *scsi_request =
110 (Mpi2SCSIIORequest_t *)mpi_request;
111
112 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
113 "scsi_io, cmd(0x%02x), cdb_len(%d)",
114 scsi_request->CDB.CDB32[0],
115 le16_to_cpu(scsi_request->IoFlags) & 0xF);
116 desc = ioc->tmp_string;
117 break;
118 }
119 case MPI2_FUNCTION_SCSI_TASK_MGMT:
120 desc = "task_mgmt";
121 break;
122 case MPI2_FUNCTION_IOC_INIT:
123 desc = "ioc_init";
124 break;
125 case MPI2_FUNCTION_IOC_FACTS:
126 desc = "ioc_facts";
127 break;
128 case MPI2_FUNCTION_CONFIG:
129 {
130 Mpi2ConfigRequest_t *config_request =
131 (Mpi2ConfigRequest_t *)mpi_request;
132
133 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
134 "config, type(0x%02x), ext_type(0x%02x), number(%d)",
135 (config_request->Header.PageType &
136 MPI2_CONFIG_PAGETYPE_MASK), config_request->ExtPageType,
137 config_request->Header.PageNumber);
138 desc = ioc->tmp_string;
139 break;
140 }
141 case MPI2_FUNCTION_PORT_FACTS:
142 desc = "port_facts";
143 break;
144 case MPI2_FUNCTION_PORT_ENABLE:
145 desc = "port_enable";
146 break;
147 case MPI2_FUNCTION_EVENT_NOTIFICATION:
148 desc = "event_notification";
149 break;
150 case MPI2_FUNCTION_FW_DOWNLOAD:
151 desc = "fw_download";
152 break;
153 case MPI2_FUNCTION_FW_UPLOAD:
154 desc = "fw_upload";
155 break;
156 case MPI2_FUNCTION_RAID_ACTION:
157 desc = "raid_action";
158 break;
159 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
160 {
161 Mpi2SCSIIORequest_t *scsi_request =
162 (Mpi2SCSIIORequest_t *)mpi_request;
163
164 snprintf(ioc->tmp_string, MPT_STRING_LENGTH,
165 "raid_pass, cmd(0x%02x), cdb_len(%d)",
166 scsi_request->CDB.CDB32[0],
167 le16_to_cpu(scsi_request->IoFlags) & 0xF);
168 desc = ioc->tmp_string;
169 break;
170 }
171 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
172 desc = "sas_iounit_cntl";
173 break;
174 case MPI2_FUNCTION_SATA_PASSTHROUGH:
175 desc = "sata_pass";
176 break;
177 case MPI2_FUNCTION_DIAG_BUFFER_POST:
178 desc = "diag_buffer_post";
179 break;
180 case MPI2_FUNCTION_DIAG_RELEASE:
181 desc = "diag_release";
182 break;
183 case MPI2_FUNCTION_SMP_PASSTHROUGH:
184 desc = "smp_passthrough";
185 break;
186 }
187
188 if (!desc)
189 return;
190
191 printk(MPT2SAS_DEBUG_FMT "%s: %s, smid(%d)\n",
192 ioc->name, calling_function_name, desc, smid);
193
194 if (!mpi_reply)
195 return;
196
197 if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo)
198 printk(MPT2SAS_DEBUG_FMT
199 "\tiocstatus(0x%04x), loginfo(0x%08x)\n",
200 ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
201 le32_to_cpu(mpi_reply->IOCLogInfo));
202
203 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
204 mpi_request->Function ==
205 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
206 Mpi2SCSIIOReply_t *scsi_reply =
207 (Mpi2SCSIIOReply_t *)mpi_reply;
208 if (scsi_reply->SCSIState || scsi_reply->SCSIStatus)
209 printk(MPT2SAS_DEBUG_FMT
210 "\tscsi_state(0x%02x), scsi_status"
211 "(0x%02x)\n", ioc->name,
212 scsi_reply->SCSIState,
213 scsi_reply->SCSIStatus);
214 }
215 }
216 #endif
217
218 /**
219 * mpt2sas_ctl_done - ctl module completion routine
220 * @ioc: per adapter object
221 * @smid: system request message index
222 * @msix_index: MSIX table index supplied by the OS
223 * @reply: reply message frame(lower 32bit addr)
224 * Context: none.
225 *
226 * The callback handler when using ioc->ctl_cb_idx.
227 *
228 * Return 1 meaning mf should be freed from _base_interrupt
229 * 0 means the mf is freed from this function.
230 */
231 u8
232 mpt2sas_ctl_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
233 u32 reply)
234 {
235 MPI2DefaultReply_t *mpi_reply;
236
237 if (ioc->ctl_cmds.status == MPT2_CMD_NOT_USED)
238 return 1;
239 if (ioc->ctl_cmds.smid != smid)
240 return 1;
241 ioc->ctl_cmds.status |= MPT2_CMD_COMPLETE;
242 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
243 if (mpi_reply) {
244 memcpy(ioc->ctl_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
245 ioc->ctl_cmds.status |= MPT2_CMD_REPLY_VALID;
246 }
247 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
248 _ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply);
249 #endif
250 ioc->ctl_cmds.status &= ~MPT2_CMD_PENDING;
251 complete(&ioc->ctl_cmds.done);
252 return 1;
253 }
254
255 /**
256 * _ctl_check_event_type - determines when an event needs logging
257 * @ioc: per adapter object
258 * @event: firmware event
259 *
260 * The bitmask in ioc->event_type[] indicates which events should be
261 * be saved in the driver event_log. This bitmask is set by application.
262 *
263 * Returns 1 when event should be captured, or zero means no match.
264 */
265 static int
266 _ctl_check_event_type(struct MPT2SAS_ADAPTER *ioc, u16 event)
267 {
268 u16 i;
269 u32 desired_event;
270
271 if (event >= 128 || !event || !ioc->event_log)
272 return 0;
273
274 desired_event = (1 << (event % 32));
275 if (!desired_event)
276 desired_event = 1;
277 i = event / 32;
278 return desired_event & ioc->event_type[i];
279 }
280
281 /**
282 * mpt2sas_ctl_add_to_event_log - add event
283 * @ioc: per adapter object
284 * @mpi_reply: reply message frame
285 *
286 * Return nothing.
287 */
288 void
289 mpt2sas_ctl_add_to_event_log(struct MPT2SAS_ADAPTER *ioc,
290 Mpi2EventNotificationReply_t *mpi_reply)
291 {
292 struct MPT2_IOCTL_EVENTS *event_log;
293 u16 event;
294 int i;
295 u32 sz, event_data_sz;
296 u8 send_aen = 0;
297
298 if (!ioc->event_log)
299 return;
300
301 event = le16_to_cpu(mpi_reply->Event);
302
303 if (_ctl_check_event_type(ioc, event)) {
304
305 /* insert entry into circular event_log */
306 i = ioc->event_context % MPT2SAS_CTL_EVENT_LOG_SIZE;
307 event_log = ioc->event_log;
308 event_log[i].event = event;
309 event_log[i].context = ioc->event_context++;
310
311 event_data_sz = le16_to_cpu(mpi_reply->EventDataLength)*4;
312 sz = min_t(u32, event_data_sz, MPT2_EVENT_DATA_SIZE);
313 memset(event_log[i].data, 0, MPT2_EVENT_DATA_SIZE);
314 memcpy(event_log[i].data, mpi_reply->EventData, sz);
315 send_aen = 1;
316 }
317
318 /* This aen_event_read_flag flag is set until the
319 * application has read the event log.
320 * For MPI2_EVENT_LOG_ENTRY_ADDED, we always notify.
321 */
322 if (event == MPI2_EVENT_LOG_ENTRY_ADDED ||
323 (send_aen && !ioc->aen_event_read_flag)) {
324 ioc->aen_event_read_flag = 1;
325 wake_up_interruptible(&ctl_poll_wait);
326 if (async_queue)
327 kill_fasync(&async_queue, SIGIO, POLL_IN);
328 }
329 }
330
331 /**
332 * mpt2sas_ctl_event_callback - firmware event handler (called at ISR time)
333 * @ioc: per adapter object
334 * @msix_index: MSIX table index supplied by the OS
335 * @reply: reply message frame(lower 32bit addr)
336 * Context: interrupt.
337 *
338 * This function merely adds a new work task into ioc->firmware_event_thread.
339 * The tasks are worked from _firmware_event_work in user context.
340 *
341 * Return 1 meaning mf should be freed from _base_interrupt
342 * 0 means the mf is freed from this function.
343 */
344 u8
345 mpt2sas_ctl_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 msix_index,
346 u32 reply)
347 {
348 Mpi2EventNotificationReply_t *mpi_reply;
349
350 mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
351 mpt2sas_ctl_add_to_event_log(ioc, mpi_reply);
352 return 1;
353 }
354
355 /**
356 * _ctl_verify_adapter - validates ioc_number passed from application
357 * @ioc: per adapter object
358 * @iocpp: The ioc pointer is returned in this.
359 *
360 * Return (-1) means error, else ioc_number.
361 */
362 static int
363 _ctl_verify_adapter(int ioc_number, struct MPT2SAS_ADAPTER **iocpp)
364 {
365 struct MPT2SAS_ADAPTER *ioc;
366
367 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
368 if (ioc->id != ioc_number)
369 continue;
370 *iocpp = ioc;
371 return ioc_number;
372 }
373 *iocpp = NULL;
374 return -1;
375 }
376
377 /**
378 * mpt2sas_ctl_reset_handler - reset callback handler (for ctl)
379 * @ioc: per adapter object
380 * @reset_phase: phase
381 *
382 * The handler for doing any required cleanup or initialization.
383 *
384 * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
385 * MPT2_IOC_DONE_RESET
386 */
387 void
388 mpt2sas_ctl_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
389 {
390 int i;
391 u8 issue_reset;
392
393 switch (reset_phase) {
394 case MPT2_IOC_PRE_RESET:
395 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
396 "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
397 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
398 if (!(ioc->diag_buffer_status[i] &
399 MPT2_DIAG_BUFFER_IS_REGISTERED))
400 continue;
401 if ((ioc->diag_buffer_status[i] &
402 MPT2_DIAG_BUFFER_IS_RELEASED))
403 continue;
404 _ctl_send_release(ioc, i, &issue_reset);
405 }
406 break;
407 case MPT2_IOC_AFTER_RESET:
408 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
409 "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
410 if (ioc->ctl_cmds.status & MPT2_CMD_PENDING) {
411 ioc->ctl_cmds.status |= MPT2_CMD_RESET;
412 mpt2sas_base_free_smid(ioc, ioc->ctl_cmds.smid);
413 complete(&ioc->ctl_cmds.done);
414 }
415 break;
416 case MPT2_IOC_DONE_RESET:
417 dtmprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
418 "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
419
420 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
421 if (!(ioc->diag_buffer_status[i] &
422 MPT2_DIAG_BUFFER_IS_REGISTERED))
423 continue;
424 if ((ioc->diag_buffer_status[i] &
425 MPT2_DIAG_BUFFER_IS_RELEASED))
426 continue;
427 ioc->diag_buffer_status[i] |=
428 MPT2_DIAG_BUFFER_IS_DIAG_RESET;
429 }
430 break;
431 }
432 }
433
434 /**
435 * _ctl_fasync -
436 * @fd -
437 * @filep -
438 * @mode -
439 *
440 * Called when application request fasyn callback handler.
441 */
442 static int
443 _ctl_fasync(int fd, struct file *filep, int mode)
444 {
445 return fasync_helper(fd, filep, mode, &async_queue);
446 }
447
448 /**
449 * _ctl_release -
450 * @inode -
451 * @filep -
452 *
453 * Called when application releases the fasyn callback handler.
454 */
455 static int
456 _ctl_release(struct inode *inode, struct file *filep)
457 {
458 return fasync_helper(-1, filep, 0, &async_queue);
459 }
460
461 /**
462 * _ctl_poll -
463 * @file -
464 * @wait -
465 *
466 */
467 static unsigned int
468 _ctl_poll(struct file *filep, poll_table *wait)
469 {
470 struct MPT2SAS_ADAPTER *ioc;
471
472 poll_wait(filep, &ctl_poll_wait, wait);
473
474 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
475 if (ioc->aen_event_read_flag)
476 return POLLIN | POLLRDNORM;
477 }
478 return 0;
479 }
480
481 /**
482 * _ctl_set_task_mid - assign an active smid to tm request
483 * @ioc: per adapter object
484 * @karg - (struct mpt2_ioctl_command)
485 * @tm_request - pointer to mf from user space
486 *
487 * Returns 0 when an smid if found, else fail.
488 * during failure, the reply frame is filled.
489 */
490 static int
491 _ctl_set_task_mid(struct MPT2SAS_ADAPTER *ioc, struct mpt2_ioctl_command *karg,
492 Mpi2SCSITaskManagementRequest_t *tm_request)
493 {
494 u8 found = 0;
495 u16 i;
496 u16 handle;
497 struct scsi_cmnd *scmd;
498 struct MPT2SAS_DEVICE *priv_data;
499 unsigned long flags;
500 Mpi2SCSITaskManagementReply_t *tm_reply;
501 u32 sz;
502 u32 lun;
503 char *desc = NULL;
504
505 if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
506 desc = "abort_task";
507 else if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
508 desc = "query_task";
509 else
510 return 0;
511
512 lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN);
513
514 handle = le16_to_cpu(tm_request->DevHandle);
515 spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
516 for (i = ioc->scsiio_depth; i && !found; i--) {
517 scmd = ioc->scsi_lookup[i - 1].scmd;
518 if (scmd == NULL || scmd->device == NULL ||
519 scmd->device->hostdata == NULL)
520 continue;
521 if (lun != scmd->device->lun)
522 continue;
523 priv_data = scmd->device->hostdata;
524 if (priv_data->sas_target == NULL)
525 continue;
526 if (priv_data->sas_target->handle != handle)
527 continue;
528 tm_request->TaskMID = cpu_to_le16(ioc->scsi_lookup[i - 1].smid);
529 found = 1;
530 }
531 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
532
533 if (!found) {
534 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
535 "handle(0x%04x), lun(%d), no active mid!!\n", ioc->name,
536 desc, tm_request->DevHandle, lun));
537 tm_reply = ioc->ctl_cmds.reply;
538 tm_reply->DevHandle = tm_request->DevHandle;
539 tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
540 tm_reply->TaskType = tm_request->TaskType;
541 tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4;
542 tm_reply->VP_ID = tm_request->VP_ID;
543 tm_reply->VF_ID = tm_request->VF_ID;
544 sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz);
545 if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply,
546 sz))
547 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
548 __LINE__, __func__);
549 return 1;
550 }
551
552 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
553 "handle(0x%04x), lun(%d), task_mid(%d)\n", ioc->name,
554 desc, tm_request->DevHandle, lun, tm_request->TaskMID));
555 return 0;
556 }
557
558 /**
559 * _ctl_do_mpt_command - main handler for MPT2COMMAND opcode
560 * @ioc: per adapter object
561 * @karg - (struct mpt2_ioctl_command)
562 * @mf - pointer to mf in user space
563 * @state - NON_BLOCKING or BLOCKING
564 */
565 static long
566 _ctl_do_mpt_command(struct MPT2SAS_ADAPTER *ioc,
567 struct mpt2_ioctl_command karg, void __user *mf, enum block_state state)
568 {
569 MPI2RequestHeader_t *mpi_request;
570 MPI2DefaultReply_t *mpi_reply;
571 u32 ioc_state;
572 u16 ioc_status;
573 u16 smid;
574 unsigned long timeout, timeleft;
575 u8 issue_reset;
576 u32 sz;
577 void *psge;
578 void *priv_sense = NULL;
579 void *data_out = NULL;
580 dma_addr_t data_out_dma;
581 size_t data_out_sz = 0;
582 void *data_in = NULL;
583 dma_addr_t data_in_dma;
584 size_t data_in_sz = 0;
585 u32 sgl_flags;
586 long ret;
587 u16 wait_state_count;
588
589 issue_reset = 0;
590
591 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
592 return -EAGAIN;
593 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
594 return -ERESTARTSYS;
595
596 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
597 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
598 ioc->name, __func__);
599 ret = -EAGAIN;
600 goto out;
601 }
602
603 wait_state_count = 0;
604 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
605 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
606 if (wait_state_count++ == 10) {
607 printk(MPT2SAS_ERR_FMT
608 "%s: failed due to ioc not operational\n",
609 ioc->name, __func__);
610 ret = -EFAULT;
611 goto out;
612 }
613 ssleep(1);
614 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
615 printk(MPT2SAS_INFO_FMT "%s: waiting for "
616 "operational state(count=%d)\n", ioc->name,
617 __func__, wait_state_count);
618 }
619 if (wait_state_count)
620 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
621 ioc->name, __func__);
622
623 smid = mpt2sas_base_get_smid_scsiio(ioc, ioc->ctl_cb_idx, NULL);
624 if (!smid) {
625 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
626 ioc->name, __func__);
627 ret = -EAGAIN;
628 goto out;
629 }
630
631 ret = 0;
632 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
633 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
634 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
635 ioc->ctl_cmds.smid = smid;
636 data_out_sz = karg.data_out_size;
637 data_in_sz = karg.data_in_size;
638
639 /* copy in request message frame from user */
640 if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) {
641 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__, __LINE__,
642 __func__);
643 ret = -EFAULT;
644 mpt2sas_base_free_smid(ioc, smid);
645 goto out;
646 }
647
648 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
649 mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) {
650 if (!mpi_request->FunctionDependent1 ||
651 mpi_request->FunctionDependent1 >
652 cpu_to_le16(ioc->facts.MaxDevHandle)) {
653 ret = -EINVAL;
654 mpt2sas_base_free_smid(ioc, smid);
655 goto out;
656 }
657 }
658
659 /* obtain dma-able memory for data transfer */
660 if (data_out_sz) /* WRITE */ {
661 data_out = pci_alloc_consistent(ioc->pdev, data_out_sz,
662 &data_out_dma);
663 if (!data_out) {
664 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
665 __LINE__, __func__);
666 ret = -ENOMEM;
667 mpt2sas_base_free_smid(ioc, smid);
668 goto out;
669 }
670 if (copy_from_user(data_out, karg.data_out_buf_ptr,
671 data_out_sz)) {
672 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
673 __LINE__, __func__);
674 ret = -EFAULT;
675 mpt2sas_base_free_smid(ioc, smid);
676 goto out;
677 }
678 }
679
680 if (data_in_sz) /* READ */ {
681 data_in = pci_alloc_consistent(ioc->pdev, data_in_sz,
682 &data_in_dma);
683 if (!data_in) {
684 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
685 __LINE__, __func__);
686 ret = -ENOMEM;
687 mpt2sas_base_free_smid(ioc, smid);
688 goto out;
689 }
690 }
691
692 /* add scatter gather elements */
693 psge = (void *)mpi_request + (karg.data_sge_offset*4);
694
695 if (!data_out_sz && !data_in_sz) {
696 mpt2sas_base_build_zero_len_sge(ioc, psge);
697 } else if (data_out_sz && data_in_sz) {
698 /* WRITE sgel first */
699 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
700 MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
701 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
702 ioc->base_add_sg_single(psge, sgl_flags |
703 data_out_sz, data_out_dma);
704
705 /* incr sgel */
706 psge += ioc->sge_size;
707
708 /* READ sgel last */
709 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
710 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
711 MPI2_SGE_FLAGS_END_OF_LIST);
712 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
713 ioc->base_add_sg_single(psge, sgl_flags |
714 data_in_sz, data_in_dma);
715 } else if (data_out_sz) /* WRITE */ {
716 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
717 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
718 MPI2_SGE_FLAGS_END_OF_LIST | MPI2_SGE_FLAGS_HOST_TO_IOC);
719 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
720 ioc->base_add_sg_single(psge, sgl_flags |
721 data_out_sz, data_out_dma);
722 } else if (data_in_sz) /* READ */ {
723 sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
724 MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
725 MPI2_SGE_FLAGS_END_OF_LIST);
726 sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
727 ioc->base_add_sg_single(psge, sgl_flags |
728 data_in_sz, data_in_dma);
729 }
730
731 /* send command to firmware */
732 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
733 _ctl_display_some_debug(ioc, smid, "ctl_request", NULL);
734 #endif
735
736 switch (mpi_request->Function) {
737 case MPI2_FUNCTION_SCSI_IO_REQUEST:
738 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH:
739 {
740 Mpi2SCSIIORequest_t *scsiio_request =
741 (Mpi2SCSIIORequest_t *)mpi_request;
742 scsiio_request->SenseBufferLowAddress =
743 (u32)mpt2sas_base_get_sense_buffer_dma(ioc, smid);
744 priv_sense = mpt2sas_base_get_sense_buffer(ioc, smid);
745 memset(priv_sense, 0, SCSI_SENSE_BUFFERSIZE);
746 mpt2sas_base_put_smid_scsi_io(ioc, smid,
747 le16_to_cpu(mpi_request->FunctionDependent1));
748 break;
749 }
750 case MPI2_FUNCTION_SCSI_TASK_MGMT:
751 {
752 Mpi2SCSITaskManagementRequest_t *tm_request =
753 (Mpi2SCSITaskManagementRequest_t *)mpi_request;
754
755 if (tm_request->TaskType ==
756 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK ||
757 tm_request->TaskType ==
758 MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) {
759 if (_ctl_set_task_mid(ioc, &karg, tm_request)) {
760 mpt2sas_base_free_smid(ioc, smid);
761 goto out;
762 }
763 }
764
765 mutex_lock(&ioc->tm_cmds.mutex);
766 mpt2sas_scsih_set_tm_flag(ioc, le16_to_cpu(
767 tm_request->DevHandle));
768 mpt2sas_base_put_smid_hi_priority(ioc, smid);
769 break;
770 }
771 case MPI2_FUNCTION_SMP_PASSTHROUGH:
772 {
773 Mpi2SmpPassthroughRequest_t *smp_request =
774 (Mpi2SmpPassthroughRequest_t *)mpi_request;
775 u8 *data;
776
777 /* ioc determines which port to use */
778 smp_request->PhysicalPort = 0xFF;
779 if (smp_request->PassthroughFlags &
780 MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE)
781 data = (u8 *)&smp_request->SGL;
782 else
783 data = data_out;
784
785 if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) {
786 ioc->ioc_link_reset_in_progress = 1;
787 ioc->ignore_loginfos = 1;
788 }
789 mpt2sas_base_put_smid_default(ioc, smid);
790 break;
791 }
792 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
793 {
794 Mpi2SasIoUnitControlRequest_t *sasiounit_request =
795 (Mpi2SasIoUnitControlRequest_t *)mpi_request;
796
797 if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET
798 || sasiounit_request->Operation ==
799 MPI2_SAS_OP_PHY_LINK_RESET) {
800 ioc->ioc_link_reset_in_progress = 1;
801 ioc->ignore_loginfos = 1;
802 }
803 mpt2sas_base_put_smid_default(ioc, smid);
804 break;
805 }
806 default:
807 mpt2sas_base_put_smid_default(ioc, smid);
808 break;
809 }
810
811 if (karg.timeout < MPT2_IOCTL_DEFAULT_TIMEOUT)
812 timeout = MPT2_IOCTL_DEFAULT_TIMEOUT;
813 else
814 timeout = karg.timeout;
815 init_completion(&ioc->ctl_cmds.done);
816 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
817 timeout*HZ);
818 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) {
819 Mpi2SCSITaskManagementRequest_t *tm_request =
820 (Mpi2SCSITaskManagementRequest_t *)mpi_request;
821 mutex_unlock(&ioc->tm_cmds.mutex);
822 mpt2sas_scsih_clear_tm_flag(ioc, le16_to_cpu(
823 tm_request->DevHandle));
824 } else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH ||
825 mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) &&
826 ioc->ioc_link_reset_in_progress) {
827 ioc->ioc_link_reset_in_progress = 0;
828 ioc->ignore_loginfos = 0;
829 }
830 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
831 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
832 __func__);
833 _debug_dump_mf(mpi_request, karg.data_sge_offset);
834 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
835 issue_reset = 1;
836 goto issue_host_reset;
837 }
838
839 mpi_reply = ioc->ctl_cmds.reply;
840 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
841
842 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
843 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT &&
844 (ioc->logging_level & MPT_DEBUG_TM)) {
845 Mpi2SCSITaskManagementReply_t *tm_reply =
846 (Mpi2SCSITaskManagementReply_t *)mpi_reply;
847
848 printk(MPT2SAS_DEBUG_FMT "TASK_MGMT: "
849 "IOCStatus(0x%04x), IOCLogInfo(0x%08x), "
850 "TerminationCount(0x%08x)\n", ioc->name,
851 tm_reply->IOCStatus, tm_reply->IOCLogInfo,
852 tm_reply->TerminationCount);
853 }
854 #endif
855 /* copy out xdata to user */
856 if (data_in_sz) {
857 if (copy_to_user(karg.data_in_buf_ptr, data_in,
858 data_in_sz)) {
859 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
860 __LINE__, __func__);
861 ret = -ENODATA;
862 goto out;
863 }
864 }
865
866 /* copy out reply message frame to user */
867 if (karg.max_reply_bytes) {
868 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
869 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
870 sz)) {
871 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
872 __LINE__, __func__);
873 ret = -ENODATA;
874 goto out;
875 }
876 }
877
878 /* copy out sense to user */
879 if (karg.max_sense_bytes && (mpi_request->Function ==
880 MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
881 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
882 sz = min_t(u32, karg.max_sense_bytes, SCSI_SENSE_BUFFERSIZE);
883 if (copy_to_user(karg.sense_data_ptr, priv_sense, sz)) {
884 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
885 __LINE__, __func__);
886 ret = -ENODATA;
887 goto out;
888 }
889 }
890
891 issue_host_reset:
892 if (issue_reset) {
893 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
894 mpi_request->Function ==
895 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
896 printk(MPT2SAS_INFO_FMT "issue target reset: handle "
897 "= (0x%04x)\n", ioc->name,
898 mpi_request->FunctionDependent1);
899 mutex_lock(&ioc->tm_cmds.mutex);
900 mpt2sas_scsih_issue_tm(ioc,
901 mpi_request->FunctionDependent1, 0,
902 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 10);
903 ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
904 mutex_unlock(&ioc->tm_cmds.mutex);
905 } else
906 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
907 FORCE_BIG_HAMMER);
908 }
909
910 out:
911
912 /* free memory associated with sg buffers */
913 if (data_in)
914 pci_free_consistent(ioc->pdev, data_in_sz, data_in,
915 data_in_dma);
916
917 if (data_out)
918 pci_free_consistent(ioc->pdev, data_out_sz, data_out,
919 data_out_dma);
920
921 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
922 mutex_unlock(&ioc->ctl_cmds.mutex);
923 return ret;
924 }
925
926 /**
927 * _ctl_getiocinfo - main handler for MPT2IOCINFO opcode
928 * @arg - user space buffer containing ioctl content
929 */
930 static long
931 _ctl_getiocinfo(void __user *arg)
932 {
933 struct mpt2_ioctl_iocinfo karg;
934 struct MPT2SAS_ADAPTER *ioc;
935 u8 revision;
936
937 if (copy_from_user(&karg, arg, sizeof(karg))) {
938 printk(KERN_ERR "failure at %s:%d/%s()!\n",
939 __FILE__, __LINE__, __func__);
940 return -EFAULT;
941 }
942 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
943 return -ENODEV;
944
945 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
946 __func__));
947
948 memset(&karg, 0 , sizeof(karg));
949 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
950 if (ioc->pfacts)
951 karg.port_number = ioc->pfacts[0].PortNumber;
952 pci_read_config_byte(ioc->pdev, PCI_CLASS_REVISION, &revision);
953 karg.hw_rev = revision;
954 karg.pci_id = ioc->pdev->device;
955 karg.subsystem_device = ioc->pdev->subsystem_device;
956 karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
957 karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
958 karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
959 karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
960 karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
961 karg.firmware_version = ioc->facts.FWVersion.Word;
962 strcpy(karg.driver_version, MPT2SAS_DRIVER_NAME);
963 strcat(karg.driver_version, "-");
964 strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
965 karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
966
967 if (copy_to_user(arg, &karg, sizeof(karg))) {
968 printk(KERN_ERR "failure at %s:%d/%s()!\n",
969 __FILE__, __LINE__, __func__);
970 return -EFAULT;
971 }
972 return 0;
973 }
974
975 /**
976 * _ctl_eventquery - main handler for MPT2EVENTQUERY opcode
977 * @arg - user space buffer containing ioctl content
978 */
979 static long
980 _ctl_eventquery(void __user *arg)
981 {
982 struct mpt2_ioctl_eventquery karg;
983 struct MPT2SAS_ADAPTER *ioc;
984
985 if (copy_from_user(&karg, arg, sizeof(karg))) {
986 printk(KERN_ERR "failure at %s:%d/%s()!\n",
987 __FILE__, __LINE__, __func__);
988 return -EFAULT;
989 }
990 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
991 return -ENODEV;
992
993 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
994 __func__));
995
996 karg.event_entries = MPT2SAS_CTL_EVENT_LOG_SIZE;
997 memcpy(karg.event_types, ioc->event_type,
998 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
999
1000 if (copy_to_user(arg, &karg, sizeof(karg))) {
1001 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1002 __FILE__, __LINE__, __func__);
1003 return -EFAULT;
1004 }
1005 return 0;
1006 }
1007
1008 /**
1009 * _ctl_eventenable - main handler for MPT2EVENTENABLE opcode
1010 * @arg - user space buffer containing ioctl content
1011 */
1012 static long
1013 _ctl_eventenable(void __user *arg)
1014 {
1015 struct mpt2_ioctl_eventenable karg;
1016 struct MPT2SAS_ADAPTER *ioc;
1017
1018 if (copy_from_user(&karg, arg, sizeof(karg))) {
1019 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1020 __FILE__, __LINE__, __func__);
1021 return -EFAULT;
1022 }
1023 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1024 return -ENODEV;
1025
1026 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
1027 __func__));
1028
1029 if (ioc->event_log)
1030 return 0;
1031 memcpy(ioc->event_type, karg.event_types,
1032 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1033 mpt2sas_base_validate_event_type(ioc, ioc->event_type);
1034
1035 /* initialize event_log */
1036 ioc->event_context = 0;
1037 ioc->aen_event_read_flag = 0;
1038 ioc->event_log = kcalloc(MPT2SAS_CTL_EVENT_LOG_SIZE,
1039 sizeof(struct MPT2_IOCTL_EVENTS), GFP_KERNEL);
1040 if (!ioc->event_log) {
1041 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1042 __FILE__, __LINE__, __func__);
1043 return -ENOMEM;
1044 }
1045 return 0;
1046 }
1047
1048 /**
1049 * _ctl_eventreport - main handler for MPT2EVENTREPORT opcode
1050 * @arg - user space buffer containing ioctl content
1051 */
1052 static long
1053 _ctl_eventreport(void __user *arg)
1054 {
1055 struct mpt2_ioctl_eventreport karg;
1056 struct MPT2SAS_ADAPTER *ioc;
1057 u32 number_bytes, max_events, max;
1058 struct mpt2_ioctl_eventreport __user *uarg = arg;
1059
1060 if (copy_from_user(&karg, arg, sizeof(karg))) {
1061 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1062 __FILE__, __LINE__, __func__);
1063 return -EFAULT;
1064 }
1065 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1066 return -ENODEV;
1067
1068 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
1069 __func__));
1070
1071 number_bytes = karg.hdr.max_data_size -
1072 sizeof(struct mpt2_ioctl_header);
1073 max_events = number_bytes/sizeof(struct MPT2_IOCTL_EVENTS);
1074 max = min_t(u32, MPT2SAS_CTL_EVENT_LOG_SIZE, max_events);
1075
1076 /* If fewer than 1 event is requested, there must have
1077 * been some type of error.
1078 */
1079 if (!max || !ioc->event_log)
1080 return -ENODATA;
1081
1082 number_bytes = max * sizeof(struct MPT2_IOCTL_EVENTS);
1083 if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
1084 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1085 __FILE__, __LINE__, __func__);
1086 return -EFAULT;
1087 }
1088
1089 /* reset flag so SIGIO can restart */
1090 ioc->aen_event_read_flag = 0;
1091 return 0;
1092 }
1093
1094 /**
1095 * _ctl_do_reset - main handler for MPT2HARDRESET opcode
1096 * @arg - user space buffer containing ioctl content
1097 */
1098 static long
1099 _ctl_do_reset(void __user *arg)
1100 {
1101 struct mpt2_ioctl_diag_reset karg;
1102 struct MPT2SAS_ADAPTER *ioc;
1103 int retval;
1104
1105 if (copy_from_user(&karg, arg, sizeof(karg))) {
1106 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1107 __FILE__, __LINE__, __func__);
1108 return -EFAULT;
1109 }
1110 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1111 return -ENODEV;
1112
1113 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
1114 __func__));
1115
1116 retval = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1117 FORCE_BIG_HAMMER);
1118 printk(MPT2SAS_INFO_FMT "host reset: %s\n",
1119 ioc->name, ((!retval) ? "SUCCESS" : "FAILED"));
1120 return 0;
1121 }
1122
1123 /**
1124 * _ctl_btdh_search_sas_device - searching for sas device
1125 * @ioc: per adapter object
1126 * @btdh: btdh ioctl payload
1127 */
1128 static int
1129 _ctl_btdh_search_sas_device(struct MPT2SAS_ADAPTER *ioc,
1130 struct mpt2_ioctl_btdh_mapping *btdh)
1131 {
1132 struct _sas_device *sas_device;
1133 unsigned long flags;
1134 int rc = 0;
1135
1136 if (list_empty(&ioc->sas_device_list))
1137 return rc;
1138
1139 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1140 list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
1141 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1142 btdh->handle == sas_device->handle) {
1143 btdh->bus = sas_device->channel;
1144 btdh->id = sas_device->id;
1145 rc = 1;
1146 goto out;
1147 } else if (btdh->bus == sas_device->channel && btdh->id ==
1148 sas_device->id && btdh->handle == 0xFFFF) {
1149 btdh->handle = sas_device->handle;
1150 rc = 1;
1151 goto out;
1152 }
1153 }
1154 out:
1155 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1156 return rc;
1157 }
1158
1159 /**
1160 * _ctl_btdh_search_raid_device - searching for raid device
1161 * @ioc: per adapter object
1162 * @btdh: btdh ioctl payload
1163 */
1164 static int
1165 _ctl_btdh_search_raid_device(struct MPT2SAS_ADAPTER *ioc,
1166 struct mpt2_ioctl_btdh_mapping *btdh)
1167 {
1168 struct _raid_device *raid_device;
1169 unsigned long flags;
1170 int rc = 0;
1171
1172 if (list_empty(&ioc->raid_device_list))
1173 return rc;
1174
1175 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1176 list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
1177 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1178 btdh->handle == raid_device->handle) {
1179 btdh->bus = raid_device->channel;
1180 btdh->id = raid_device->id;
1181 rc = 1;
1182 goto out;
1183 } else if (btdh->bus == raid_device->channel && btdh->id ==
1184 raid_device->id && btdh->handle == 0xFFFF) {
1185 btdh->handle = raid_device->handle;
1186 rc = 1;
1187 goto out;
1188 }
1189 }
1190 out:
1191 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1192 return rc;
1193 }
1194
1195 /**
1196 * _ctl_btdh_mapping - main handler for MPT2BTDHMAPPING opcode
1197 * @arg - user space buffer containing ioctl content
1198 */
1199 static long
1200 _ctl_btdh_mapping(void __user *arg)
1201 {
1202 struct mpt2_ioctl_btdh_mapping karg;
1203 struct MPT2SAS_ADAPTER *ioc;
1204 int rc;
1205
1206 if (copy_from_user(&karg, arg, sizeof(karg))) {
1207 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1208 __FILE__, __LINE__, __func__);
1209 return -EFAULT;
1210 }
1211 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1212 return -ENODEV;
1213
1214 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1215 __func__));
1216
1217 rc = _ctl_btdh_search_sas_device(ioc, &karg);
1218 if (!rc)
1219 _ctl_btdh_search_raid_device(ioc, &karg);
1220
1221 if (copy_to_user(arg, &karg, sizeof(karg))) {
1222 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1223 __FILE__, __LINE__, __func__);
1224 return -EFAULT;
1225 }
1226 return 0;
1227 }
1228
1229 /**
1230 * _ctl_diag_capability - return diag buffer capability
1231 * @ioc: per adapter object
1232 * @buffer_type: specifies either TRACE or SNAPSHOT
1233 *
1234 * returns 1 when diag buffer support is enabled in firmware
1235 */
1236 static u8
1237 _ctl_diag_capability(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type)
1238 {
1239 u8 rc = 0;
1240
1241 switch (buffer_type) {
1242 case MPI2_DIAG_BUF_TYPE_TRACE:
1243 if (ioc->facts.IOCCapabilities &
1244 MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
1245 rc = 1;
1246 break;
1247 case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
1248 if (ioc->facts.IOCCapabilities &
1249 MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
1250 rc = 1;
1251 break;
1252 }
1253
1254 return rc;
1255 }
1256
1257 /**
1258 * _ctl_diag_register - application register with driver
1259 * @arg - user space buffer containing ioctl content
1260 * @state - NON_BLOCKING or BLOCKING
1261 *
1262 * This will allow the driver to setup any required buffers that will be
1263 * needed by firmware to communicate with the driver.
1264 */
1265 static long
1266 _ctl_diag_register(void __user *arg, enum block_state state)
1267 {
1268 struct mpt2_diag_register karg;
1269 struct MPT2SAS_ADAPTER *ioc;
1270 int rc, i;
1271 void *request_data = NULL;
1272 dma_addr_t request_data_dma;
1273 u32 request_data_sz = 0;
1274 Mpi2DiagBufferPostRequest_t *mpi_request;
1275 Mpi2DiagBufferPostReply_t *mpi_reply;
1276 u8 buffer_type;
1277 unsigned long timeleft;
1278 u16 smid;
1279 u16 ioc_status;
1280 u8 issue_reset = 0;
1281
1282 if (copy_from_user(&karg, arg, sizeof(karg))) {
1283 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1284 __FILE__, __LINE__, __func__);
1285 return -EFAULT;
1286 }
1287 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1288 return -ENODEV;
1289
1290 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1291 __func__));
1292
1293 buffer_type = karg.buffer_type;
1294 if (!_ctl_diag_capability(ioc, buffer_type)) {
1295 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1296 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1297 return -EPERM;
1298 }
1299
1300 if (ioc->diag_buffer_status[buffer_type] &
1301 MPT2_DIAG_BUFFER_IS_REGISTERED) {
1302 printk(MPT2SAS_ERR_FMT "%s: already has a registered "
1303 "buffer for buffer_type(0x%02x)\n", ioc->name, __func__,
1304 buffer_type);
1305 return -EINVAL;
1306 }
1307
1308 if (karg.requested_buffer_size % 4) {
1309 printk(MPT2SAS_ERR_FMT "%s: the requested_buffer_size "
1310 "is not 4 byte aligned\n", ioc->name, __func__);
1311 return -EINVAL;
1312 }
1313
1314 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1315 return -EAGAIN;
1316 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1317 return -ERESTARTSYS;
1318
1319 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1320 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1321 ioc->name, __func__);
1322 rc = -EAGAIN;
1323 goto out;
1324 }
1325
1326 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1327 if (!smid) {
1328 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1329 ioc->name, __func__);
1330 rc = -EAGAIN;
1331 goto out;
1332 }
1333
1334 rc = 0;
1335 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1336 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1337 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1338 ioc->ctl_cmds.smid = smid;
1339
1340 request_data = ioc->diag_buffer[buffer_type];
1341 request_data_sz = karg.requested_buffer_size;
1342 ioc->unique_id[buffer_type] = karg.unique_id;
1343 ioc->diag_buffer_status[buffer_type] = 0;
1344 memcpy(ioc->product_specific[buffer_type], karg.product_specific,
1345 MPT2_PRODUCT_SPECIFIC_DWORDS);
1346 ioc->diagnostic_flags[buffer_type] = karg.diagnostic_flags;
1347
1348 if (request_data) {
1349 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1350 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
1351 pci_free_consistent(ioc->pdev,
1352 ioc->diag_buffer_sz[buffer_type],
1353 request_data, request_data_dma);
1354 request_data = NULL;
1355 }
1356 }
1357
1358 if (request_data == NULL) {
1359 ioc->diag_buffer_sz[buffer_type] = 0;
1360 ioc->diag_buffer_dma[buffer_type] = 0;
1361 request_data = pci_alloc_consistent(
1362 ioc->pdev, request_data_sz, &request_data_dma);
1363 if (request_data == NULL) {
1364 printk(MPT2SAS_ERR_FMT "%s: failed allocating memory"
1365 " for diag buffers, requested size(%d)\n",
1366 ioc->name, __func__, request_data_sz);
1367 mpt2sas_base_free_smid(ioc, smid);
1368 return -ENOMEM;
1369 }
1370 ioc->diag_buffer[buffer_type] = request_data;
1371 ioc->diag_buffer_sz[buffer_type] = request_data_sz;
1372 ioc->diag_buffer_dma[buffer_type] = request_data_dma;
1373 }
1374
1375 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1376 mpi_request->BufferType = karg.buffer_type;
1377 mpi_request->Flags = cpu_to_le32(karg.diagnostic_flags);
1378 mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
1379 mpi_request->BufferLength = cpu_to_le32(request_data_sz);
1380 mpi_request->VF_ID = 0; /* TODO */
1381 mpi_request->VP_ID = 0;
1382
1383 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: diag_buffer(0x%p), "
1384 "dma(0x%llx), sz(%d)\n", ioc->name, __func__, request_data,
1385 (unsigned long long)request_data_dma, mpi_request->BufferLength));
1386
1387 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1388 mpi_request->ProductSpecific[i] =
1389 cpu_to_le32(ioc->product_specific[buffer_type][i]);
1390
1391 mpt2sas_base_put_smid_default(ioc, smid);
1392 init_completion(&ioc->ctl_cmds.done);
1393 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1394 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1395
1396 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1397 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1398 __func__);
1399 _debug_dump_mf(mpi_request,
1400 sizeof(Mpi2DiagBufferPostRequest_t)/4);
1401 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1402 issue_reset = 1;
1403 goto issue_host_reset;
1404 }
1405
1406 /* process the completed Reply Message Frame */
1407 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1408 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1409 ioc->name, __func__);
1410 rc = -EFAULT;
1411 goto out;
1412 }
1413
1414 mpi_reply = ioc->ctl_cmds.reply;
1415 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1416
1417 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1418 ioc->diag_buffer_status[buffer_type] |=
1419 MPT2_DIAG_BUFFER_IS_REGISTERED;
1420 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: success\n",
1421 ioc->name, __func__));
1422 } else {
1423 printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) "
1424 "log_info(0x%08x)\n", ioc->name, __func__,
1425 ioc_status, mpi_reply->IOCLogInfo);
1426 rc = -EFAULT;
1427 }
1428
1429 issue_host_reset:
1430 if (issue_reset)
1431 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1432 FORCE_BIG_HAMMER);
1433
1434 out:
1435
1436 if (rc && request_data)
1437 pci_free_consistent(ioc->pdev, request_data_sz,
1438 request_data, request_data_dma);
1439
1440 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1441 mutex_unlock(&ioc->ctl_cmds.mutex);
1442 return rc;
1443 }
1444
1445 /**
1446 * _ctl_diag_unregister - application unregister with driver
1447 * @arg - user space buffer containing ioctl content
1448 *
1449 * This will allow the driver to cleanup any memory allocated for diag
1450 * messages and to free up any resources.
1451 */
1452 static long
1453 _ctl_diag_unregister(void __user *arg)
1454 {
1455 struct mpt2_diag_unregister karg;
1456 struct MPT2SAS_ADAPTER *ioc;
1457 void *request_data;
1458 dma_addr_t request_data_dma;
1459 u32 request_data_sz;
1460 u8 buffer_type;
1461
1462 if (copy_from_user(&karg, arg, sizeof(karg))) {
1463 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1464 __FILE__, __LINE__, __func__);
1465 return -EFAULT;
1466 }
1467 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1468 return -ENODEV;
1469
1470 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1471 __func__));
1472
1473 buffer_type = karg.unique_id & 0x000000ff;
1474 if (!_ctl_diag_capability(ioc, buffer_type)) {
1475 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1476 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1477 return -EPERM;
1478 }
1479
1480 if ((ioc->diag_buffer_status[buffer_type] &
1481 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1482 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1483 "registered\n", ioc->name, __func__, buffer_type);
1484 return -EINVAL;
1485 }
1486 if ((ioc->diag_buffer_status[buffer_type] &
1487 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
1488 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) has not been "
1489 "released\n", ioc->name, __func__, buffer_type);
1490 return -EINVAL;
1491 }
1492
1493 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1494 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1495 "registered\n", ioc->name, __func__, karg.unique_id);
1496 return -EINVAL;
1497 }
1498
1499 request_data = ioc->diag_buffer[buffer_type];
1500 if (!request_data) {
1501 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1502 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1503 return -ENOMEM;
1504 }
1505
1506 request_data_sz = ioc->diag_buffer_sz[buffer_type];
1507 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1508 pci_free_consistent(ioc->pdev, request_data_sz,
1509 request_data, request_data_dma);
1510 ioc->diag_buffer[buffer_type] = NULL;
1511 ioc->diag_buffer_status[buffer_type] = 0;
1512 return 0;
1513 }
1514
1515 /**
1516 * _ctl_diag_query - query relevant info associated with diag buffers
1517 * @arg - user space buffer containing ioctl content
1518 *
1519 * The application will send only buffer_type and unique_id. Driver will
1520 * inspect unique_id first, if valid, fill in all the info. If unique_id is
1521 * 0x00, the driver will return info specified by Buffer Type.
1522 */
1523 static long
1524 _ctl_diag_query(void __user *arg)
1525 {
1526 struct mpt2_diag_query karg;
1527 struct MPT2SAS_ADAPTER *ioc;
1528 void *request_data;
1529 int i;
1530 u8 buffer_type;
1531
1532 if (copy_from_user(&karg, arg, sizeof(karg))) {
1533 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1534 __FILE__, __LINE__, __func__);
1535 return -EFAULT;
1536 }
1537 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1538 return -ENODEV;
1539
1540 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1541 __func__));
1542
1543 karg.application_flags = 0;
1544 buffer_type = karg.buffer_type;
1545
1546 if (!_ctl_diag_capability(ioc, buffer_type)) {
1547 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1548 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1549 return -EPERM;
1550 }
1551
1552 if ((ioc->diag_buffer_status[buffer_type] &
1553 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1554 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1555 "registered\n", ioc->name, __func__, buffer_type);
1556 return -EINVAL;
1557 }
1558
1559 if (karg.unique_id & 0xffffff00) {
1560 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1561 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1562 "registered\n", ioc->name, __func__,
1563 karg.unique_id);
1564 return -EINVAL;
1565 }
1566 }
1567
1568 request_data = ioc->diag_buffer[buffer_type];
1569 if (!request_data) {
1570 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1571 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1572 return -ENOMEM;
1573 }
1574
1575 if (ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_RELEASED)
1576 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1577 MPT2_APP_FLAGS_BUFFER_VALID);
1578 else
1579 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1580 MPT2_APP_FLAGS_BUFFER_VALID |
1581 MPT2_APP_FLAGS_FW_BUFFER_ACCESS);
1582
1583 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1584 karg.product_specific[i] =
1585 ioc->product_specific[buffer_type][i];
1586
1587 karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
1588 karg.driver_added_buffer_size = 0;
1589 karg.unique_id = ioc->unique_id[buffer_type];
1590 karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];
1591
1592 if (copy_to_user(arg, &karg, sizeof(struct mpt2_diag_query))) {
1593 printk(MPT2SAS_ERR_FMT "%s: unable to write mpt2_diag_query "
1594 "data @ %p\n", ioc->name, __func__, arg);
1595 return -EFAULT;
1596 }
1597 return 0;
1598 }
1599
1600 /**
1601 * _ctl_send_release - Diag Release Message
1602 * @ioc: per adapter object
1603 * @buffer_type - specifies either TRACE or SNAPSHOT
1604 * @issue_reset - specifies whether host reset is required.
1605 *
1606 */
1607 static int
1608 _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type, u8 *issue_reset)
1609 {
1610 Mpi2DiagReleaseRequest_t *mpi_request;
1611 Mpi2DiagReleaseReply_t *mpi_reply;
1612 u16 smid;
1613 u16 ioc_status;
1614 u32 ioc_state;
1615 int rc;
1616 unsigned long timeleft;
1617
1618 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1619 __func__));
1620
1621 rc = 0;
1622 *issue_reset = 0;
1623
1624 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1625 if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1626 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
1627 "skipping due to FAULT state\n", ioc->name,
1628 __func__));
1629 rc = -EAGAIN;
1630 goto out;
1631 }
1632
1633 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1634 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1635 ioc->name, __func__);
1636 rc = -EAGAIN;
1637 goto out;
1638 }
1639
1640 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1641 if (!smid) {
1642 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1643 ioc->name, __func__);
1644 rc = -EAGAIN;
1645 goto out;
1646 }
1647
1648 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1649 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1650 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1651 ioc->ctl_cmds.smid = smid;
1652
1653 mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
1654 mpi_request->BufferType = buffer_type;
1655 mpi_request->VF_ID = 0; /* TODO */
1656 mpi_request->VP_ID = 0;
1657
1658 mpt2sas_base_put_smid_default(ioc, smid);
1659 init_completion(&ioc->ctl_cmds.done);
1660 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1661 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1662
1663 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1664 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1665 __func__);
1666 _debug_dump_mf(mpi_request,
1667 sizeof(Mpi2DiagReleaseRequest_t)/4);
1668 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1669 *issue_reset = 1;
1670 rc = -EFAULT;
1671 goto out;
1672 }
1673
1674 /* process the completed Reply Message Frame */
1675 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1676 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1677 ioc->name, __func__);
1678 rc = -EFAULT;
1679 goto out;
1680 }
1681
1682 mpi_reply = ioc->ctl_cmds.reply;
1683 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1684
1685 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1686 ioc->diag_buffer_status[buffer_type] |=
1687 MPT2_DIAG_BUFFER_IS_RELEASED;
1688 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: success\n",
1689 ioc->name, __func__));
1690 } else {
1691 printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) "
1692 "log_info(0x%08x)\n", ioc->name, __func__,
1693 ioc_status, mpi_reply->IOCLogInfo);
1694 rc = -EFAULT;
1695 }
1696
1697 out:
1698 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1699 return rc;
1700 }
1701
1702 /**
1703 * _ctl_diag_release - request to send Diag Release Message to firmware
1704 * @arg - user space buffer containing ioctl content
1705 * @state - NON_BLOCKING or BLOCKING
1706 *
1707 * This allows ownership of the specified buffer to returned to the driver,
1708 * allowing an application to read the buffer without fear that firmware is
1709 * overwritting information in the buffer.
1710 */
1711 static long
1712 _ctl_diag_release(void __user *arg, enum block_state state)
1713 {
1714 struct mpt2_diag_release karg;
1715 struct MPT2SAS_ADAPTER *ioc;
1716 void *request_data;
1717 int rc;
1718 u8 buffer_type;
1719 u8 issue_reset = 0;
1720
1721 if (copy_from_user(&karg, arg, sizeof(karg))) {
1722 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1723 __FILE__, __LINE__, __func__);
1724 return -EFAULT;
1725 }
1726 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1727 return -ENODEV;
1728
1729 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1730 __func__));
1731
1732 buffer_type = karg.unique_id & 0x000000ff;
1733 if (!_ctl_diag_capability(ioc, buffer_type)) {
1734 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1735 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1736 return -EPERM;
1737 }
1738
1739 if ((ioc->diag_buffer_status[buffer_type] &
1740 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1741 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1742 "registered\n", ioc->name, __func__, buffer_type);
1743 return -EINVAL;
1744 }
1745
1746 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1747 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1748 "registered\n", ioc->name, __func__, karg.unique_id);
1749 return -EINVAL;
1750 }
1751
1752 if (ioc->diag_buffer_status[buffer_type] &
1753 MPT2_DIAG_BUFFER_IS_RELEASED) {
1754 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1755 "is already released\n", ioc->name, __func__,
1756 buffer_type);
1757 return 0;
1758 }
1759
1760 request_data = ioc->diag_buffer[buffer_type];
1761
1762 if (!request_data) {
1763 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1764 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1765 return -ENOMEM;
1766 }
1767
1768 /* buffers were released by due to host reset */
1769 if ((ioc->diag_buffer_status[buffer_type] &
1770 MPT2_DIAG_BUFFER_IS_DIAG_RESET)) {
1771 ioc->diag_buffer_status[buffer_type] |=
1772 MPT2_DIAG_BUFFER_IS_RELEASED;
1773 ioc->diag_buffer_status[buffer_type] &=
1774 ~MPT2_DIAG_BUFFER_IS_DIAG_RESET;
1775 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1776 "was released due to host reset\n", ioc->name, __func__,
1777 buffer_type);
1778 return 0;
1779 }
1780
1781 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1782 return -EAGAIN;
1783 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1784 return -ERESTARTSYS;
1785
1786 rc = _ctl_send_release(ioc, buffer_type, &issue_reset);
1787
1788 if (issue_reset)
1789 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1790 FORCE_BIG_HAMMER);
1791
1792 mutex_unlock(&ioc->ctl_cmds.mutex);
1793 return rc;
1794 }
1795
1796 /**
1797 * _ctl_diag_read_buffer - request for copy of the diag buffer
1798 * @arg - user space buffer containing ioctl content
1799 * @state - NON_BLOCKING or BLOCKING
1800 */
1801 static long
1802 _ctl_diag_read_buffer(void __user *arg, enum block_state state)
1803 {
1804 struct mpt2_diag_read_buffer karg;
1805 struct mpt2_diag_read_buffer __user *uarg = arg;
1806 struct MPT2SAS_ADAPTER *ioc;
1807 void *request_data, *diag_data;
1808 Mpi2DiagBufferPostRequest_t *mpi_request;
1809 Mpi2DiagBufferPostReply_t *mpi_reply;
1810 int rc, i;
1811 u8 buffer_type;
1812 unsigned long timeleft;
1813 u16 smid;
1814 u16 ioc_status;
1815 u8 issue_reset = 0;
1816
1817 if (copy_from_user(&karg, arg, sizeof(karg))) {
1818 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1819 __FILE__, __LINE__, __func__);
1820 return -EFAULT;
1821 }
1822 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1823 return -ENODEV;
1824
1825 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1826 __func__));
1827
1828 buffer_type = karg.unique_id & 0x000000ff;
1829 if (!_ctl_diag_capability(ioc, buffer_type)) {
1830 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1831 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1832 return -EPERM;
1833 }
1834
1835 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1836 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1837 "registered\n", ioc->name, __func__, karg.unique_id);
1838 return -EINVAL;
1839 }
1840
1841 request_data = ioc->diag_buffer[buffer_type];
1842 if (!request_data) {
1843 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1844 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1845 return -ENOMEM;
1846 }
1847
1848 if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
1849 printk(MPT2SAS_ERR_FMT "%s: either the starting_offset "
1850 "or bytes_to_read are not 4 byte aligned\n", ioc->name,
1851 __func__);
1852 return -EINVAL;
1853 }
1854
1855 diag_data = (void *)(request_data + karg.starting_offset);
1856 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: diag_buffer(%p), "
1857 "offset(%d), sz(%d)\n", ioc->name, __func__,
1858 diag_data, karg.starting_offset, karg.bytes_to_read));
1859
1860 if (copy_to_user((void __user *)uarg->diagnostic_data,
1861 diag_data, karg.bytes_to_read)) {
1862 printk(MPT2SAS_ERR_FMT "%s: Unable to write "
1863 "mpt_diag_read_buffer_t data @ %p\n", ioc->name,
1864 __func__, diag_data);
1865 return -EFAULT;
1866 }
1867
1868 if ((karg.flags & MPT2_FLAGS_REREGISTER) == 0)
1869 return 0;
1870
1871 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: Reregister "
1872 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type));
1873 if ((ioc->diag_buffer_status[buffer_type] &
1874 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
1875 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
1876 "buffer_type(0x%02x) is still registered\n", ioc->name,
1877 __func__, buffer_type));
1878 return 0;
1879 }
1880 /* Get a free request frame and save the message context.
1881 */
1882 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1883 return -EAGAIN;
1884 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1885 return -ERESTARTSYS;
1886
1887 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1888 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1889 ioc->name, __func__);
1890 rc = -EAGAIN;
1891 goto out;
1892 }
1893
1894 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1895 if (!smid) {
1896 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1897 ioc->name, __func__);
1898 rc = -EAGAIN;
1899 goto out;
1900 }
1901
1902 rc = 0;
1903 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1904 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1905 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1906 ioc->ctl_cmds.smid = smid;
1907
1908 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1909 mpi_request->BufferType = buffer_type;
1910 mpi_request->BufferLength =
1911 cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
1912 mpi_request->BufferAddress =
1913 cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
1914 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1915 mpi_request->ProductSpecific[i] =
1916 cpu_to_le32(ioc->product_specific[buffer_type][i]);
1917 mpi_request->VF_ID = 0; /* TODO */
1918 mpi_request->VP_ID = 0;
1919
1920 mpt2sas_base_put_smid_default(ioc, smid);
1921 init_completion(&ioc->ctl_cmds.done);
1922 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1923 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1924
1925 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1926 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1927 __func__);
1928 _debug_dump_mf(mpi_request,
1929 sizeof(Mpi2DiagBufferPostRequest_t)/4);
1930 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1931 issue_reset = 1;
1932 goto issue_host_reset;
1933 }
1934
1935 /* process the completed Reply Message Frame */
1936 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1937 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1938 ioc->name, __func__);
1939 rc = -EFAULT;
1940 goto out;
1941 }
1942
1943 mpi_reply = ioc->ctl_cmds.reply;
1944 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1945
1946 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1947 ioc->diag_buffer_status[buffer_type] |=
1948 MPT2_DIAG_BUFFER_IS_REGISTERED;
1949 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: success\n",
1950 ioc->name, __func__));
1951 } else {
1952 printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) "
1953 "log_info(0x%08x)\n", ioc->name, __func__,
1954 ioc_status, mpi_reply->IOCLogInfo);
1955 rc = -EFAULT;
1956 }
1957
1958 issue_host_reset:
1959 if (issue_reset)
1960 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1961 FORCE_BIG_HAMMER);
1962
1963 out:
1964
1965 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1966 mutex_unlock(&ioc->ctl_cmds.mutex);
1967 return rc;
1968 }
1969
1970 /**
1971 * _ctl_ioctl_main - main ioctl entry point
1972 * @file - (struct file)
1973 * @cmd - ioctl opcode
1974 * @arg -
1975 */
1976 static long
1977 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg)
1978 {
1979 enum block_state state;
1980 long ret = -EINVAL;
1981
1982 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING :
1983 BLOCKING;
1984
1985 switch (cmd) {
1986 case MPT2IOCINFO:
1987 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_iocinfo))
1988 ret = _ctl_getiocinfo(arg);
1989 break;
1990 case MPT2COMMAND:
1991 {
1992 struct mpt2_ioctl_command karg;
1993 struct mpt2_ioctl_command __user *uarg;
1994 struct MPT2SAS_ADAPTER *ioc;
1995
1996 if (copy_from_user(&karg, arg, sizeof(karg))) {
1997 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1998 __FILE__, __LINE__, __func__);
1999 return -EFAULT;
2000 }
2001
2002 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
2003 !ioc)
2004 return -ENODEV;
2005
2006 if (ioc->shost_recovery)
2007 return -EAGAIN;
2008
2009 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_command)) {
2010 uarg = arg;
2011 ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
2012 }
2013 break;
2014 }
2015 case MPT2EVENTQUERY:
2016 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventquery))
2017 ret = _ctl_eventquery(arg);
2018 break;
2019 case MPT2EVENTENABLE:
2020 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventenable))
2021 ret = _ctl_eventenable(arg);
2022 break;
2023 case MPT2EVENTREPORT:
2024 ret = _ctl_eventreport(arg);
2025 break;
2026 case MPT2HARDRESET:
2027 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_diag_reset))
2028 ret = _ctl_do_reset(arg);
2029 break;
2030 case MPT2BTDHMAPPING:
2031 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_btdh_mapping))
2032 ret = _ctl_btdh_mapping(arg);
2033 break;
2034 case MPT2DIAGREGISTER:
2035 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_register))
2036 ret = _ctl_diag_register(arg, state);
2037 break;
2038 case MPT2DIAGUNREGISTER:
2039 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_unregister))
2040 ret = _ctl_diag_unregister(arg);
2041 break;
2042 case MPT2DIAGQUERY:
2043 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_query))
2044 ret = _ctl_diag_query(arg);
2045 break;
2046 case MPT2DIAGRELEASE:
2047 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_release))
2048 ret = _ctl_diag_release(arg, state);
2049 break;
2050 case MPT2DIAGREADBUFFER:
2051 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_read_buffer))
2052 ret = _ctl_diag_read_buffer(arg, state);
2053 break;
2054 default:
2055 {
2056 struct mpt2_ioctl_command karg;
2057 struct MPT2SAS_ADAPTER *ioc;
2058
2059 if (copy_from_user(&karg, arg, sizeof(karg))) {
2060 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2061 __FILE__, __LINE__, __func__);
2062 return -EFAULT;
2063 }
2064
2065 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
2066 !ioc)
2067 return -ENODEV;
2068
2069 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT
2070 "unsupported ioctl opcode(0x%08x)\n", ioc->name, cmd));
2071 break;
2072 }
2073 }
2074 return ret;
2075 }
2076
2077 /**
2078 * _ctl_ioctl - main ioctl entry point (unlocked)
2079 * @file - (struct file)
2080 * @cmd - ioctl opcode
2081 * @arg -
2082 */
2083 static long
2084 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2085 {
2086 long ret;
2087
2088 lock_kernel();
2089 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
2090 unlock_kernel();
2091 return ret;
2092 }
2093
2094 #ifdef CONFIG_COMPAT
2095 /**
2096 * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
2097 * @file - (struct file)
2098 * @cmd - ioctl opcode
2099 * @arg - (struct mpt2_ioctl_command32)
2100 *
2101 * MPT2COMMAND32 - Handle 32bit applications running on 64bit os.
2102 */
2103 static long
2104 _ctl_compat_mpt_command(struct file *file, unsigned cmd, unsigned long arg)
2105 {
2106 struct mpt2_ioctl_command32 karg32;
2107 struct mpt2_ioctl_command32 __user *uarg;
2108 struct mpt2_ioctl_command karg;
2109 struct MPT2SAS_ADAPTER *ioc;
2110 enum block_state state;
2111
2112 if (_IOC_SIZE(cmd) != sizeof(struct mpt2_ioctl_command32))
2113 return -EINVAL;
2114
2115 uarg = (struct mpt2_ioctl_command32 __user *) arg;
2116
2117 if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
2118 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2119 __FILE__, __LINE__, __func__);
2120 return -EFAULT;
2121 }
2122 if (_ctl_verify_adapter(karg32.hdr.ioc_number, &ioc) == -1 || !ioc)
2123 return -ENODEV;
2124
2125 if (ioc->shost_recovery)
2126 return -EAGAIN;
2127
2128 memset(&karg, 0, sizeof(struct mpt2_ioctl_command));
2129 karg.hdr.ioc_number = karg32.hdr.ioc_number;
2130 karg.hdr.port_number = karg32.hdr.port_number;
2131 karg.hdr.max_data_size = karg32.hdr.max_data_size;
2132 karg.timeout = karg32.timeout;
2133 karg.max_reply_bytes = karg32.max_reply_bytes;
2134 karg.data_in_size = karg32.data_in_size;
2135 karg.data_out_size = karg32.data_out_size;
2136 karg.max_sense_bytes = karg32.max_sense_bytes;
2137 karg.data_sge_offset = karg32.data_sge_offset;
2138 memcpy(&karg.reply_frame_buf_ptr, &karg32.reply_frame_buf_ptr,
2139 sizeof(uint32_t));
2140 memcpy(&karg.data_in_buf_ptr, &karg32.data_in_buf_ptr,
2141 sizeof(uint32_t));
2142 memcpy(&karg.data_out_buf_ptr, &karg32.data_out_buf_ptr,
2143 sizeof(uint32_t));
2144 memcpy(&karg.sense_data_ptr, &karg32.sense_data_ptr,
2145 sizeof(uint32_t));
2146 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
2147 return _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
2148 }
2149
2150 /**
2151 * _ctl_ioctl_compat - main ioctl entry point (compat)
2152 * @file -
2153 * @cmd -
2154 * @arg -
2155 *
2156 * This routine handles 32 bit applications in 64bit os.
2157 */
2158 static long
2159 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2160 {
2161 long ret;
2162
2163 lock_kernel();
2164 if (cmd == MPT2COMMAND32)
2165 ret = _ctl_compat_mpt_command(file, cmd, arg);
2166 else
2167 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
2168 unlock_kernel();
2169 return ret;
2170 }
2171 #endif
2172
2173 /* scsi host attributes */
2174
2175 /**
2176 * _ctl_version_fw_show - firmware version
2177 * @cdev - pointer to embedded class device
2178 * @buf - the buffer returned
2179 *
2180 * A sysfs 'read-only' shost attribute.
2181 */
2182 static ssize_t
2183 _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr,
2184 char *buf)
2185 {
2186 struct Scsi_Host *shost = class_to_shost(cdev);
2187 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2188
2189 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2190 (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2191 (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2192 (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2193 ioc->facts.FWVersion.Word & 0x000000FF);
2194 }
2195 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL);
2196
2197 /**
2198 * _ctl_version_bios_show - bios version
2199 * @cdev - pointer to embedded class device
2200 * @buf - the buffer returned
2201 *
2202 * A sysfs 'read-only' shost attribute.
2203 */
2204 static ssize_t
2205 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr,
2206 char *buf)
2207 {
2208 struct Scsi_Host *shost = class_to_shost(cdev);
2209 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2210
2211 u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2212
2213 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2214 (version & 0xFF000000) >> 24,
2215 (version & 0x00FF0000) >> 16,
2216 (version & 0x0000FF00) >> 8,
2217 version & 0x000000FF);
2218 }
2219 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL);
2220
2221 /**
2222 * _ctl_version_mpi_show - MPI (message passing interface) version
2223 * @cdev - pointer to embedded class device
2224 * @buf - the buffer returned
2225 *
2226 * A sysfs 'read-only' shost attribute.
2227 */
2228 static ssize_t
2229 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr,
2230 char *buf)
2231 {
2232 struct Scsi_Host *shost = class_to_shost(cdev);
2233 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2234
2235 return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
2236 ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
2237 }
2238 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL);
2239
2240 /**
2241 * _ctl_version_product_show - product name
2242 * @cdev - pointer to embedded class device
2243 * @buf - the buffer returned
2244 *
2245 * A sysfs 'read-only' shost attribute.
2246 */
2247 static ssize_t
2248 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr,
2249 char *buf)
2250 {
2251 struct Scsi_Host *shost = class_to_shost(cdev);
2252 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2253
2254 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
2255 }
2256 static DEVICE_ATTR(version_product, S_IRUGO,
2257 _ctl_version_product_show, NULL);
2258
2259 /**
2260 * _ctl_version_nvdata_persistent_show - ndvata persistent version
2261 * @cdev - pointer to embedded class device
2262 * @buf - the buffer returned
2263 *
2264 * A sysfs 'read-only' shost attribute.
2265 */
2266 static ssize_t
2267 _ctl_version_nvdata_persistent_show(struct device *cdev,
2268 struct device_attribute *attr, char *buf)
2269 {
2270 struct Scsi_Host *shost = class_to_shost(cdev);
2271 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2272
2273 return snprintf(buf, PAGE_SIZE, "%02xh\n",
2274 le16_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
2275 }
2276 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
2277 _ctl_version_nvdata_persistent_show, NULL);
2278
2279 /**
2280 * _ctl_version_nvdata_default_show - nvdata default version
2281 * @cdev - pointer to embedded class device
2282 * @buf - the buffer returned
2283 *
2284 * A sysfs 'read-only' shost attribute.
2285 */
2286 static ssize_t
2287 _ctl_version_nvdata_default_show(struct device *cdev,
2288 struct device_attribute *attr, char *buf)
2289 {
2290 struct Scsi_Host *shost = class_to_shost(cdev);
2291 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2292
2293 return snprintf(buf, PAGE_SIZE, "%02xh\n",
2294 le16_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
2295 }
2296 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
2297 _ctl_version_nvdata_default_show, NULL);
2298
2299 /**
2300 * _ctl_board_name_show - board name
2301 * @cdev - pointer to embedded class device
2302 * @buf - the buffer returned
2303 *
2304 * A sysfs 'read-only' shost attribute.
2305 */
2306 static ssize_t
2307 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr,
2308 char *buf)
2309 {
2310 struct Scsi_Host *shost = class_to_shost(cdev);
2311 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2312
2313 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
2314 }
2315 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL);
2316
2317 /**
2318 * _ctl_board_assembly_show - board assembly name
2319 * @cdev - pointer to embedded class device
2320 * @buf - the buffer returned
2321 *
2322 * A sysfs 'read-only' shost attribute.
2323 */
2324 static ssize_t
2325 _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr,
2326 char *buf)
2327 {
2328 struct Scsi_Host *shost = class_to_shost(cdev);
2329 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2330
2331 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
2332 }
2333 static DEVICE_ATTR(board_assembly, S_IRUGO,
2334 _ctl_board_assembly_show, NULL);
2335
2336 /**
2337 * _ctl_board_tracer_show - board tracer number
2338 * @cdev - pointer to embedded class device
2339 * @buf - the buffer returned
2340 *
2341 * A sysfs 'read-only' shost attribute.
2342 */
2343 static ssize_t
2344 _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr,
2345 char *buf)
2346 {
2347 struct Scsi_Host *shost = class_to_shost(cdev);
2348 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2349
2350 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
2351 }
2352 static DEVICE_ATTR(board_tracer, S_IRUGO,
2353 _ctl_board_tracer_show, NULL);
2354
2355 /**
2356 * _ctl_io_delay_show - io missing delay
2357 * @cdev - pointer to embedded class device
2358 * @buf - the buffer returned
2359 *
2360 * This is for firmware implemention for deboucing device
2361 * removal events.
2362 *
2363 * A sysfs 'read-only' shost attribute.
2364 */
2365 static ssize_t
2366 _ctl_io_delay_show(struct device *cdev, struct device_attribute *attr,
2367 char *buf)
2368 {
2369 struct Scsi_Host *shost = class_to_shost(cdev);
2370 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2371
2372 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
2373 }
2374 static DEVICE_ATTR(io_delay, S_IRUGO,
2375 _ctl_io_delay_show, NULL);
2376
2377 /**
2378 * _ctl_device_delay_show - device missing delay
2379 * @cdev - pointer to embedded class device
2380 * @buf - the buffer returned
2381 *
2382 * This is for firmware implemention for deboucing device
2383 * removal events.
2384 *
2385 * A sysfs 'read-only' shost attribute.
2386 */
2387 static ssize_t
2388 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr,
2389 char *buf)
2390 {
2391 struct Scsi_Host *shost = class_to_shost(cdev);
2392 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2393
2394 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
2395 }
2396 static DEVICE_ATTR(device_delay, S_IRUGO,
2397 _ctl_device_delay_show, NULL);
2398
2399 /**
2400 * _ctl_fw_queue_depth_show - global credits
2401 * @cdev - pointer to embedded class device
2402 * @buf - the buffer returned
2403 *
2404 * This is firmware queue depth limit
2405 *
2406 * A sysfs 'read-only' shost attribute.
2407 */
2408 static ssize_t
2409 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
2410 char *buf)
2411 {
2412 struct Scsi_Host *shost = class_to_shost(cdev);
2413 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2414
2415 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
2416 }
2417 static DEVICE_ATTR(fw_queue_depth, S_IRUGO,
2418 _ctl_fw_queue_depth_show, NULL);
2419
2420 /**
2421 * _ctl_sas_address_show - sas address
2422 * @cdev - pointer to embedded class device
2423 * @buf - the buffer returned
2424 *
2425 * This is the controller sas address
2426 *
2427 * A sysfs 'read-only' shost attribute.
2428 */
2429 static ssize_t
2430 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr,
2431 char *buf)
2432 {
2433 struct Scsi_Host *shost = class_to_shost(cdev);
2434 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2435
2436 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2437 (unsigned long long)ioc->sas_hba.sas_address);
2438 }
2439 static DEVICE_ATTR(host_sas_address, S_IRUGO,
2440 _ctl_host_sas_address_show, NULL);
2441
2442 /**
2443 * _ctl_logging_level_show - logging level
2444 * @cdev - pointer to embedded class device
2445 * @buf - the buffer returned
2446 *
2447 * A sysfs 'read/write' shost attribute.
2448 */
2449 static ssize_t
2450 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr,
2451 char *buf)
2452 {
2453 struct Scsi_Host *shost = class_to_shost(cdev);
2454 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2455
2456 return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
2457 }
2458 static ssize_t
2459 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr,
2460 const char *buf, size_t count)
2461 {
2462 struct Scsi_Host *shost = class_to_shost(cdev);
2463 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2464 int val = 0;
2465
2466 if (sscanf(buf, "%x", &val) != 1)
2467 return -EINVAL;
2468
2469 ioc->logging_level = val;
2470 printk(MPT2SAS_INFO_FMT "logging_level=%08xh\n", ioc->name,
2471 ioc->logging_level);
2472 return strlen(buf);
2473 }
2474 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
2475 _ctl_logging_level_show, _ctl_logging_level_store);
2476
2477 struct device_attribute *mpt2sas_host_attrs[] = {
2478 &dev_attr_version_fw,
2479 &dev_attr_version_bios,
2480 &dev_attr_version_mpi,
2481 &dev_attr_version_product,
2482 &dev_attr_version_nvdata_persistent,
2483 &dev_attr_version_nvdata_default,
2484 &dev_attr_board_name,
2485 &dev_attr_board_assembly,
2486 &dev_attr_board_tracer,
2487 &dev_attr_io_delay,
2488 &dev_attr_device_delay,
2489 &dev_attr_logging_level,
2490 &dev_attr_fw_queue_depth,
2491 &dev_attr_host_sas_address,
2492 NULL,
2493 };
2494
2495 /* device attributes */
2496
2497 /**
2498 * _ctl_device_sas_address_show - sas address
2499 * @cdev - pointer to embedded class device
2500 * @buf - the buffer returned
2501 *
2502 * This is the sas address for the target
2503 *
2504 * A sysfs 'read-only' shost attribute.
2505 */
2506 static ssize_t
2507 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr,
2508 char *buf)
2509 {
2510 struct scsi_device *sdev = to_scsi_device(dev);
2511 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2512
2513 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2514 (unsigned long long)sas_device_priv_data->sas_target->sas_address);
2515 }
2516 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL);
2517
2518 /**
2519 * _ctl_device_handle_show - device handle
2520 * @cdev - pointer to embedded class device
2521 * @buf - the buffer returned
2522 *
2523 * This is the firmware assigned device handle
2524 *
2525 * A sysfs 'read-only' shost attribute.
2526 */
2527 static ssize_t
2528 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr,
2529 char *buf)
2530 {
2531 struct scsi_device *sdev = to_scsi_device(dev);
2532 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2533
2534 return snprintf(buf, PAGE_SIZE, "0x%04x\n",
2535 sas_device_priv_data->sas_target->handle);
2536 }
2537 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL);
2538
2539 struct device_attribute *mpt2sas_dev_attrs[] = {
2540 &dev_attr_sas_address,
2541 &dev_attr_sas_device_handle,
2542 NULL,
2543 };
2544
2545 static const struct file_operations ctl_fops = {
2546 .owner = THIS_MODULE,
2547 .unlocked_ioctl = _ctl_ioctl,
2548 .release = _ctl_release,
2549 .poll = _ctl_poll,
2550 .fasync = _ctl_fasync,
2551 #ifdef CONFIG_COMPAT
2552 .compat_ioctl = _ctl_ioctl_compat,
2553 #endif
2554 };
2555
2556 static struct miscdevice ctl_dev = {
2557 .minor = MPT2SAS_MINOR,
2558 .name = MPT2SAS_DEV_NAME,
2559 .fops = &ctl_fops,
2560 };
2561
2562 /**
2563 * mpt2sas_ctl_init - main entry point for ctl.
2564 *
2565 */
2566 void
2567 mpt2sas_ctl_init(void)
2568 {
2569 async_queue = NULL;
2570 if (misc_register(&ctl_dev) < 0)
2571 printk(KERN_ERR "%s can't register misc device [minor=%d]\n",
2572 MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
2573
2574 init_waitqueue_head(&ctl_poll_wait);
2575 }
2576
2577 /**
2578 * mpt2sas_ctl_exit - exit point for ctl
2579 *
2580 */
2581 void
2582 mpt2sas_ctl_exit(void)
2583 {
2584 struct MPT2SAS_ADAPTER *ioc;
2585 int i;
2586
2587 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
2588
2589 /* free memory associated to diag buffers */
2590 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
2591 if (!ioc->diag_buffer[i])
2592 continue;
2593 pci_free_consistent(ioc->pdev, ioc->diag_buffer_sz[i],
2594 ioc->diag_buffer[i], ioc->diag_buffer_dma[i]);
2595 ioc->diag_buffer[i] = NULL;
2596 ioc->diag_buffer_status[i] = 0;
2597 }
2598
2599 kfree(ioc->event_log);
2600 }
2601 misc_deregister(&ctl_dev);
2602 }
2603
Linux with added FPC-III support