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[SCSI] mpt2sas: Use compat_ptr to setup the pointer compatibility.
[linux-2.6/kvm.git] / drivers / scsi / mpt2sas / mpt2sas_ctl.c
blobfa9bf83819d50cc269f05db3f58f2ed10d86bda0
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 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 le16_to_cpu(tm_reply->IOCStatus),
852 le32_to_cpu(tm_reply->IOCLogInfo),
853 le32_to_cpu(tm_reply->TerminationCount));
854 }
855 #endif
856 /* copy out xdata to user */
857 if (data_in_sz) {
858 if (copy_to_user(karg.data_in_buf_ptr, data_in,
859 data_in_sz)) {
860 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
861 __LINE__, __func__);
862 ret = -ENODATA;
863 goto out;
864 }
865 }
866
867 /* copy out reply message frame to user */
868 if (karg.max_reply_bytes) {
869 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz);
870 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply,
871 sz)) {
872 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
873 __LINE__, __func__);
874 ret = -ENODATA;
875 goto out;
876 }
877 }
878
879 /* copy out sense to user */
880 if (karg.max_sense_bytes && (mpi_request->Function ==
881 MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function ==
882 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
883 sz = min_t(u32, karg.max_sense_bytes, SCSI_SENSE_BUFFERSIZE);
884 if (copy_to_user(karg.sense_data_ptr, priv_sense, sz)) {
885 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
886 __LINE__, __func__);
887 ret = -ENODATA;
888 goto out;
889 }
890 }
891
892 issue_host_reset:
893 if (issue_reset) {
894 ret = -ENODATA;
895 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
896 mpi_request->Function ==
897 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)) {
898 printk(MPT2SAS_INFO_FMT "issue target reset: handle "
899 "= (0x%04x)\n", ioc->name,
900 mpi_request->FunctionDependent1);
901 mpt2sas_halt_firmware(ioc);
902 mutex_lock(&ioc->tm_cmds.mutex);
903 mpt2sas_scsih_issue_tm(ioc,
904 mpi_request->FunctionDependent1, 0,
905 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 10);
906 ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
907 mutex_unlock(&ioc->tm_cmds.mutex);
908 } else
909 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
910 FORCE_BIG_HAMMER);
911 }
912
913 out:
914
915 /* free memory associated with sg buffers */
916 if (data_in)
917 pci_free_consistent(ioc->pdev, data_in_sz, data_in,
918 data_in_dma);
919
920 if (data_out)
921 pci_free_consistent(ioc->pdev, data_out_sz, data_out,
922 data_out_dma);
923
924 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
925 mutex_unlock(&ioc->ctl_cmds.mutex);
926 return ret;
927 }
928
929 /**
930 * _ctl_getiocinfo - main handler for MPT2IOCINFO opcode
931 * @arg - user space buffer containing ioctl content
932 */
933 static long
934 _ctl_getiocinfo(void __user *arg)
935 {
936 struct mpt2_ioctl_iocinfo karg;
937 struct MPT2SAS_ADAPTER *ioc;
938 u8 revision;
939
940 if (copy_from_user(&karg, arg, sizeof(karg))) {
941 printk(KERN_ERR "failure at %s:%d/%s()!\n",
942 __FILE__, __LINE__, __func__);
943 return -EFAULT;
944 }
945 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
946 return -ENODEV;
947
948 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
949 __func__));
950
951 memset(&karg, 0 , sizeof(karg));
952 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2;
953 if (ioc->pfacts)
954 karg.port_number = ioc->pfacts[0].PortNumber;
955 pci_read_config_byte(ioc->pdev, PCI_CLASS_REVISION, &revision);
956 karg.hw_rev = revision;
957 karg.pci_id = ioc->pdev->device;
958 karg.subsystem_device = ioc->pdev->subsystem_device;
959 karg.subsystem_vendor = ioc->pdev->subsystem_vendor;
960 karg.pci_information.u.bits.bus = ioc->pdev->bus->number;
961 karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn);
962 karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn);
963 karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus);
964 karg.firmware_version = ioc->facts.FWVersion.Word;
965 strcpy(karg.driver_version, MPT2SAS_DRIVER_NAME);
966 strcat(karg.driver_version, "-");
967 strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION);
968 karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
969
970 if (copy_to_user(arg, &karg, sizeof(karg))) {
971 printk(KERN_ERR "failure at %s:%d/%s()!\n",
972 __FILE__, __LINE__, __func__);
973 return -EFAULT;
974 }
975 return 0;
976 }
977
978 /**
979 * _ctl_eventquery - main handler for MPT2EVENTQUERY opcode
980 * @arg - user space buffer containing ioctl content
981 */
982 static long
983 _ctl_eventquery(void __user *arg)
984 {
985 struct mpt2_ioctl_eventquery karg;
986 struct MPT2SAS_ADAPTER *ioc;
987
988 if (copy_from_user(&karg, arg, sizeof(karg))) {
989 printk(KERN_ERR "failure at %s:%d/%s()!\n",
990 __FILE__, __LINE__, __func__);
991 return -EFAULT;
992 }
993 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
994 return -ENODEV;
995
996 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
997 __func__));
998
999 karg.event_entries = MPT2SAS_CTL_EVENT_LOG_SIZE;
1000 memcpy(karg.event_types, ioc->event_type,
1001 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1002
1003 if (copy_to_user(arg, &karg, sizeof(karg))) {
1004 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1005 __FILE__, __LINE__, __func__);
1006 return -EFAULT;
1007 }
1008 return 0;
1009 }
1010
1011 /**
1012 * _ctl_eventenable - main handler for MPT2EVENTENABLE opcode
1013 * @arg - user space buffer containing ioctl content
1014 */
1015 static long
1016 _ctl_eventenable(void __user *arg)
1017 {
1018 struct mpt2_ioctl_eventenable karg;
1019 struct MPT2SAS_ADAPTER *ioc;
1020
1021 if (copy_from_user(&karg, arg, sizeof(karg))) {
1022 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1023 __FILE__, __LINE__, __func__);
1024 return -EFAULT;
1025 }
1026 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1027 return -ENODEV;
1028
1029 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
1030 __func__));
1031
1032 if (ioc->event_log)
1033 return 0;
1034 memcpy(ioc->event_type, karg.event_types,
1035 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32));
1036 mpt2sas_base_validate_event_type(ioc, ioc->event_type);
1037
1038 /* initialize event_log */
1039 ioc->event_context = 0;
1040 ioc->aen_event_read_flag = 0;
1041 ioc->event_log = kcalloc(MPT2SAS_CTL_EVENT_LOG_SIZE,
1042 sizeof(struct MPT2_IOCTL_EVENTS), GFP_KERNEL);
1043 if (!ioc->event_log) {
1044 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1045 __FILE__, __LINE__, __func__);
1046 return -ENOMEM;
1047 }
1048 return 0;
1049 }
1050
1051 /**
1052 * _ctl_eventreport - main handler for MPT2EVENTREPORT opcode
1053 * @arg - user space buffer containing ioctl content
1054 */
1055 static long
1056 _ctl_eventreport(void __user *arg)
1057 {
1058 struct mpt2_ioctl_eventreport karg;
1059 struct MPT2SAS_ADAPTER *ioc;
1060 u32 number_bytes, max_events, max;
1061 struct mpt2_ioctl_eventreport __user *uarg = arg;
1062
1063 if (copy_from_user(&karg, arg, sizeof(karg))) {
1064 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1065 __FILE__, __LINE__, __func__);
1066 return -EFAULT;
1067 }
1068 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1069 return -ENODEV;
1070
1071 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
1072 __func__));
1073
1074 number_bytes = karg.hdr.max_data_size -
1075 sizeof(struct mpt2_ioctl_header);
1076 max_events = number_bytes/sizeof(struct MPT2_IOCTL_EVENTS);
1077 max = min_t(u32, MPT2SAS_CTL_EVENT_LOG_SIZE, max_events);
1078
1079 /* If fewer than 1 event is requested, there must have
1080 * been some type of error.
1081 */
1082 if (!max || !ioc->event_log)
1083 return -ENODATA;
1084
1085 number_bytes = max * sizeof(struct MPT2_IOCTL_EVENTS);
1086 if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) {
1087 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1088 __FILE__, __LINE__, __func__);
1089 return -EFAULT;
1090 }
1091
1092 /* reset flag so SIGIO can restart */
1093 ioc->aen_event_read_flag = 0;
1094 return 0;
1095 }
1096
1097 /**
1098 * _ctl_do_reset - main handler for MPT2HARDRESET opcode
1099 * @arg - user space buffer containing ioctl content
1100 */
1101 static long
1102 _ctl_do_reset(void __user *arg)
1103 {
1104 struct mpt2_ioctl_diag_reset karg;
1105 struct MPT2SAS_ADAPTER *ioc;
1106 int retval;
1107
1108 if (copy_from_user(&karg, arg, sizeof(karg))) {
1109 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1110 __FILE__, __LINE__, __func__);
1111 return -EFAULT;
1112 }
1113 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1114 return -ENODEV;
1115
1116 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: enter\n", ioc->name,
1117 __func__));
1118
1119 retval = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1120 FORCE_BIG_HAMMER);
1121 printk(MPT2SAS_INFO_FMT "host reset: %s\n",
1122 ioc->name, ((!retval) ? "SUCCESS" : "FAILED"));
1123 return 0;
1124 }
1125
1126 /**
1127 * _ctl_btdh_search_sas_device - searching for sas device
1128 * @ioc: per adapter object
1129 * @btdh: btdh ioctl payload
1130 */
1131 static int
1132 _ctl_btdh_search_sas_device(struct MPT2SAS_ADAPTER *ioc,
1133 struct mpt2_ioctl_btdh_mapping *btdh)
1134 {
1135 struct _sas_device *sas_device;
1136 unsigned long flags;
1137 int rc = 0;
1138
1139 if (list_empty(&ioc->sas_device_list))
1140 return rc;
1141
1142 spin_lock_irqsave(&ioc->sas_device_lock, flags);
1143 list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
1144 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1145 btdh->handle == sas_device->handle) {
1146 btdh->bus = sas_device->channel;
1147 btdh->id = sas_device->id;
1148 rc = 1;
1149 goto out;
1150 } else if (btdh->bus == sas_device->channel && btdh->id ==
1151 sas_device->id && btdh->handle == 0xFFFF) {
1152 btdh->handle = sas_device->handle;
1153 rc = 1;
1154 goto out;
1155 }
1156 }
1157 out:
1158 spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1159 return rc;
1160 }
1161
1162 /**
1163 * _ctl_btdh_search_raid_device - searching for raid device
1164 * @ioc: per adapter object
1165 * @btdh: btdh ioctl payload
1166 */
1167 static int
1168 _ctl_btdh_search_raid_device(struct MPT2SAS_ADAPTER *ioc,
1169 struct mpt2_ioctl_btdh_mapping *btdh)
1170 {
1171 struct _raid_device *raid_device;
1172 unsigned long flags;
1173 int rc = 0;
1174
1175 if (list_empty(&ioc->raid_device_list))
1176 return rc;
1177
1178 spin_lock_irqsave(&ioc->raid_device_lock, flags);
1179 list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
1180 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF &&
1181 btdh->handle == raid_device->handle) {
1182 btdh->bus = raid_device->channel;
1183 btdh->id = raid_device->id;
1184 rc = 1;
1185 goto out;
1186 } else if (btdh->bus == raid_device->channel && btdh->id ==
1187 raid_device->id && btdh->handle == 0xFFFF) {
1188 btdh->handle = raid_device->handle;
1189 rc = 1;
1190 goto out;
1191 }
1192 }
1193 out:
1194 spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
1195 return rc;
1196 }
1197
1198 /**
1199 * _ctl_btdh_mapping - main handler for MPT2BTDHMAPPING opcode
1200 * @arg - user space buffer containing ioctl content
1201 */
1202 static long
1203 _ctl_btdh_mapping(void __user *arg)
1204 {
1205 struct mpt2_ioctl_btdh_mapping karg;
1206 struct MPT2SAS_ADAPTER *ioc;
1207 int rc;
1208
1209 if (copy_from_user(&karg, arg, sizeof(karg))) {
1210 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1211 __FILE__, __LINE__, __func__);
1212 return -EFAULT;
1213 }
1214 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1215 return -ENODEV;
1216
1217 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1218 __func__));
1219
1220 rc = _ctl_btdh_search_sas_device(ioc, &karg);
1221 if (!rc)
1222 _ctl_btdh_search_raid_device(ioc, &karg);
1223
1224 if (copy_to_user(arg, &karg, sizeof(karg))) {
1225 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1226 __FILE__, __LINE__, __func__);
1227 return -EFAULT;
1228 }
1229 return 0;
1230 }
1231
1232 /**
1233 * _ctl_diag_capability - return diag buffer capability
1234 * @ioc: per adapter object
1235 * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED
1236 *
1237 * returns 1 when diag buffer support is enabled in firmware
1238 */
1239 static u8
1240 _ctl_diag_capability(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type)
1241 {
1242 u8 rc = 0;
1243
1244 switch (buffer_type) {
1245 case MPI2_DIAG_BUF_TYPE_TRACE:
1246 if (ioc->facts.IOCCapabilities &
1247 MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER)
1248 rc = 1;
1249 break;
1250 case MPI2_DIAG_BUF_TYPE_SNAPSHOT:
1251 if (ioc->facts.IOCCapabilities &
1252 MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER)
1253 rc = 1;
1254 break;
1255 case MPI2_DIAG_BUF_TYPE_EXTENDED:
1256 if (ioc->facts.IOCCapabilities &
1257 MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER)
1258 rc = 1;
1259 }
1260
1261 return rc;
1262 }
1263
1264 /**
1265 * _ctl_diag_register_2 - wrapper for registering diag buffer support
1266 * @ioc: per adapter object
1267 * @diag_register: the diag_register struct passed in from user space
1268 *
1269 */
1270 static long
1271 _ctl_diag_register_2(struct MPT2SAS_ADAPTER *ioc,
1272 struct mpt2_diag_register *diag_register)
1273 {
1274 int rc, i;
1275 void *request_data = NULL;
1276 dma_addr_t request_data_dma;
1277 u32 request_data_sz = 0;
1278 Mpi2DiagBufferPostRequest_t *mpi_request;
1279 Mpi2DiagBufferPostReply_t *mpi_reply;
1280 u8 buffer_type;
1281 unsigned long timeleft;
1282 u16 smid;
1283 u16 ioc_status;
1284 u8 issue_reset = 0;
1285
1286 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1287 __func__));
1288
1289 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1290 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1291 ioc->name, __func__);
1292 rc = -EAGAIN;
1293 goto out;
1294 }
1295
1296 buffer_type = diag_register->buffer_type;
1297 if (!_ctl_diag_capability(ioc, buffer_type)) {
1298 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1299 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1300 return -EPERM;
1301 }
1302
1303 if (ioc->diag_buffer_status[buffer_type] &
1304 MPT2_DIAG_BUFFER_IS_REGISTERED) {
1305 printk(MPT2SAS_ERR_FMT "%s: already has a registered "
1306 "buffer for buffer_type(0x%02x)\n", ioc->name, __func__,
1307 buffer_type);
1308 return -EINVAL;
1309 }
1310
1311 if (diag_register->requested_buffer_size % 4) {
1312 printk(MPT2SAS_ERR_FMT "%s: the requested_buffer_size "
1313 "is not 4 byte aligned\n", ioc->name, __func__);
1314 return -EINVAL;
1315 }
1316
1317 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1318 if (!smid) {
1319 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1320 ioc->name, __func__);
1321 rc = -EAGAIN;
1322 goto out;
1323 }
1324
1325 rc = 0;
1326 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1327 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1328 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1329 ioc->ctl_cmds.smid = smid;
1330
1331 request_data = ioc->diag_buffer[buffer_type];
1332 request_data_sz = diag_register->requested_buffer_size;
1333 ioc->unique_id[buffer_type] = diag_register->unique_id;
1334 ioc->diag_buffer_status[buffer_type] = 0;
1335 memcpy(ioc->product_specific[buffer_type],
1336 diag_register->product_specific, MPT2_PRODUCT_SPECIFIC_DWORDS);
1337 ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags;
1338
1339 if (request_data) {
1340 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1341 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) {
1342 pci_free_consistent(ioc->pdev,
1343 ioc->diag_buffer_sz[buffer_type],
1344 request_data, request_data_dma);
1345 request_data = NULL;
1346 }
1347 }
1348
1349 if (request_data == NULL) {
1350 ioc->diag_buffer_sz[buffer_type] = 0;
1351 ioc->diag_buffer_dma[buffer_type] = 0;
1352 request_data = pci_alloc_consistent(
1353 ioc->pdev, request_data_sz, &request_data_dma);
1354 if (request_data == NULL) {
1355 printk(MPT2SAS_ERR_FMT "%s: failed allocating memory"
1356 " for diag buffers, requested size(%d)\n",
1357 ioc->name, __func__, request_data_sz);
1358 mpt2sas_base_free_smid(ioc, smid);
1359 return -ENOMEM;
1360 }
1361 ioc->diag_buffer[buffer_type] = request_data;
1362 ioc->diag_buffer_sz[buffer_type] = request_data_sz;
1363 ioc->diag_buffer_dma[buffer_type] = request_data_dma;
1364 }
1365
1366 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1367 mpi_request->BufferType = diag_register->buffer_type;
1368 mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags);
1369 mpi_request->BufferAddress = cpu_to_le64(request_data_dma);
1370 mpi_request->BufferLength = cpu_to_le32(request_data_sz);
1371 mpi_request->VF_ID = 0; /* TODO */
1372 mpi_request->VP_ID = 0;
1373
1374 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: diag_buffer(0x%p), "
1375 "dma(0x%llx), sz(%d)\n", ioc->name, __func__, request_data,
1376 (unsigned long long)request_data_dma, mpi_request->BufferLength));
1377
1378 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1379 mpi_request->ProductSpecific[i] =
1380 cpu_to_le32(ioc->product_specific[buffer_type][i]);
1381
1382 mpt2sas_base_put_smid_default(ioc, smid);
1383 init_completion(&ioc->ctl_cmds.done);
1384 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1385 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1386
1387 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1388 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1389 __func__);
1390 _debug_dump_mf(mpi_request,
1391 sizeof(Mpi2DiagBufferPostRequest_t)/4);
1392 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1393 issue_reset = 1;
1394 goto issue_host_reset;
1395 }
1396
1397 /* process the completed Reply Message Frame */
1398 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1399 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1400 ioc->name, __func__);
1401 rc = -EFAULT;
1402 goto out;
1403 }
1404
1405 mpi_reply = ioc->ctl_cmds.reply;
1406 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1407
1408 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1409 ioc->diag_buffer_status[buffer_type] |=
1410 MPT2_DIAG_BUFFER_IS_REGISTERED;
1411 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: success\n",
1412 ioc->name, __func__));
1413 } else {
1414 printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) "
1415 "log_info(0x%08x)\n", ioc->name, __func__,
1416 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1417 rc = -EFAULT;
1418 }
1419
1420 issue_host_reset:
1421 if (issue_reset)
1422 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1423 FORCE_BIG_HAMMER);
1424
1425 out:
1426
1427 if (rc && request_data)
1428 pci_free_consistent(ioc->pdev, request_data_sz,
1429 request_data, request_data_dma);
1430
1431 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1432 return rc;
1433 }
1434
1435 /**
1436 * mpt2sas_enable_diag_buffer - enabling diag_buffers support driver load time
1437 * @ioc: per adapter object
1438 * @bits_to_register: bitwise field where trace is bit 0, and snapshot is bit 1
1439 *
1440 * This is called when command line option diag_buffer_enable is enabled
1441 * at driver load time.
1442 */
1443 void
1444 mpt2sas_enable_diag_buffer(struct MPT2SAS_ADAPTER *ioc, u8 bits_to_register)
1445 {
1446 struct mpt2_diag_register diag_register;
1447
1448 memset(&diag_register, 0, sizeof(struct mpt2_diag_register));
1449
1450 if (bits_to_register & 1) {
1451 printk(MPT2SAS_INFO_FMT "registering trace buffer support\n",
1452 ioc->name);
1453 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE;
1454 /* register for 1MB buffers */
1455 diag_register.requested_buffer_size = (1024 * 1024);
1456 diag_register.unique_id = 0x7075900;
1457 _ctl_diag_register_2(ioc, &diag_register);
1458 }
1459
1460 if (bits_to_register & 2) {
1461 printk(MPT2SAS_INFO_FMT "registering snapshot buffer support\n",
1462 ioc->name);
1463 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT;
1464 /* register for 2MB buffers */
1465 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1466 diag_register.unique_id = 0x7075901;
1467 _ctl_diag_register_2(ioc, &diag_register);
1468 }
1469
1470 if (bits_to_register & 4) {
1471 printk(MPT2SAS_INFO_FMT "registering extended buffer support\n",
1472 ioc->name);
1473 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_EXTENDED;
1474 /* register for 2MB buffers */
1475 diag_register.requested_buffer_size = 2 * (1024 * 1024);
1476 diag_register.unique_id = 0x7075901;
1477 _ctl_diag_register_2(ioc, &diag_register);
1478 }
1479 }
1480
1481 /**
1482 * _ctl_diag_register - application register with driver
1483 * @arg - user space buffer containing ioctl content
1484 * @state - NON_BLOCKING or BLOCKING
1485 *
1486 * This will allow the driver to setup any required buffers that will be
1487 * needed by firmware to communicate with the driver.
1488 */
1489 static long
1490 _ctl_diag_register(void __user *arg, enum block_state state)
1491 {
1492 struct mpt2_diag_register karg;
1493 struct MPT2SAS_ADAPTER *ioc;
1494 long rc;
1495
1496 if (copy_from_user(&karg, arg, sizeof(karg))) {
1497 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1498 __FILE__, __LINE__, __func__);
1499 return -EFAULT;
1500 }
1501 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1502 return -ENODEV;
1503
1504 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1505 return -EAGAIN;
1506 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1507 return -ERESTARTSYS;
1508 rc = _ctl_diag_register_2(ioc, &karg);
1509 mutex_unlock(&ioc->ctl_cmds.mutex);
1510 return rc;
1511 }
1512
1513 /**
1514 * _ctl_diag_unregister - application unregister with driver
1515 * @arg - user space buffer containing ioctl content
1516 *
1517 * This will allow the driver to cleanup any memory allocated for diag
1518 * messages and to free up any resources.
1519 */
1520 static long
1521 _ctl_diag_unregister(void __user *arg)
1522 {
1523 struct mpt2_diag_unregister karg;
1524 struct MPT2SAS_ADAPTER *ioc;
1525 void *request_data;
1526 dma_addr_t request_data_dma;
1527 u32 request_data_sz;
1528 u8 buffer_type;
1529
1530 if (copy_from_user(&karg, arg, sizeof(karg))) {
1531 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1532 __FILE__, __LINE__, __func__);
1533 return -EFAULT;
1534 }
1535 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1536 return -ENODEV;
1537
1538 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1539 __func__));
1540
1541 buffer_type = karg.unique_id & 0x000000ff;
1542 if (!_ctl_diag_capability(ioc, buffer_type)) {
1543 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1544 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1545 return -EPERM;
1546 }
1547
1548 if ((ioc->diag_buffer_status[buffer_type] &
1549 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1550 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1551 "registered\n", ioc->name, __func__, buffer_type);
1552 return -EINVAL;
1553 }
1554 if ((ioc->diag_buffer_status[buffer_type] &
1555 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
1556 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) has not been "
1557 "released\n", ioc->name, __func__, buffer_type);
1558 return -EINVAL;
1559 }
1560
1561 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1562 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1563 "registered\n", ioc->name, __func__, karg.unique_id);
1564 return -EINVAL;
1565 }
1566
1567 request_data = ioc->diag_buffer[buffer_type];
1568 if (!request_data) {
1569 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1570 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1571 return -ENOMEM;
1572 }
1573
1574 request_data_sz = ioc->diag_buffer_sz[buffer_type];
1575 request_data_dma = ioc->diag_buffer_dma[buffer_type];
1576 pci_free_consistent(ioc->pdev, request_data_sz,
1577 request_data, request_data_dma);
1578 ioc->diag_buffer[buffer_type] = NULL;
1579 ioc->diag_buffer_status[buffer_type] = 0;
1580 return 0;
1581 }
1582
1583 /**
1584 * _ctl_diag_query - query relevant info associated with diag buffers
1585 * @arg - user space buffer containing ioctl content
1586 *
1587 * The application will send only buffer_type and unique_id. Driver will
1588 * inspect unique_id first, if valid, fill in all the info. If unique_id is
1589 * 0x00, the driver will return info specified by Buffer Type.
1590 */
1591 static long
1592 _ctl_diag_query(void __user *arg)
1593 {
1594 struct mpt2_diag_query karg;
1595 struct MPT2SAS_ADAPTER *ioc;
1596 void *request_data;
1597 int i;
1598 u8 buffer_type;
1599
1600 if (copy_from_user(&karg, arg, sizeof(karg))) {
1601 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1602 __FILE__, __LINE__, __func__);
1603 return -EFAULT;
1604 }
1605 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1606 return -ENODEV;
1607
1608 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1609 __func__));
1610
1611 karg.application_flags = 0;
1612 buffer_type = karg.buffer_type;
1613
1614 if (!_ctl_diag_capability(ioc, buffer_type)) {
1615 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1616 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1617 return -EPERM;
1618 }
1619
1620 if ((ioc->diag_buffer_status[buffer_type] &
1621 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1622 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1623 "registered\n", ioc->name, __func__, buffer_type);
1624 return -EINVAL;
1625 }
1626
1627 if (karg.unique_id & 0xffffff00) {
1628 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1629 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1630 "registered\n", ioc->name, __func__,
1631 karg.unique_id);
1632 return -EINVAL;
1633 }
1634 }
1635
1636 request_data = ioc->diag_buffer[buffer_type];
1637 if (!request_data) {
1638 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1639 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1640 return -ENOMEM;
1641 }
1642
1643 if (ioc->diag_buffer_status[buffer_type] & MPT2_DIAG_BUFFER_IS_RELEASED)
1644 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1645 MPT2_APP_FLAGS_BUFFER_VALID);
1646 else
1647 karg.application_flags = (MPT2_APP_FLAGS_APP_OWNED |
1648 MPT2_APP_FLAGS_BUFFER_VALID |
1649 MPT2_APP_FLAGS_FW_BUFFER_ACCESS);
1650
1651 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1652 karg.product_specific[i] =
1653 ioc->product_specific[buffer_type][i];
1654
1655 karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type];
1656 karg.driver_added_buffer_size = 0;
1657 karg.unique_id = ioc->unique_id[buffer_type];
1658 karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type];
1659
1660 if (copy_to_user(arg, &karg, sizeof(struct mpt2_diag_query))) {
1661 printk(MPT2SAS_ERR_FMT "%s: unable to write mpt2_diag_query "
1662 "data @ %p\n", ioc->name, __func__, arg);
1663 return -EFAULT;
1664 }
1665 return 0;
1666 }
1667
1668 /**
1669 * _ctl_send_release - Diag Release Message
1670 * @ioc: per adapter object
1671 * @buffer_type - specifies either TRACE, SNAPSHOT, or EXTENDED
1672 * @issue_reset - specifies whether host reset is required.
1673 *
1674 */
1675 static int
1676 _ctl_send_release(struct MPT2SAS_ADAPTER *ioc, u8 buffer_type, u8 *issue_reset)
1677 {
1678 Mpi2DiagReleaseRequest_t *mpi_request;
1679 Mpi2DiagReleaseReply_t *mpi_reply;
1680 u16 smid;
1681 u16 ioc_status;
1682 u32 ioc_state;
1683 int rc;
1684 unsigned long timeleft;
1685
1686 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1687 __func__));
1688
1689 rc = 0;
1690 *issue_reset = 0;
1691
1692 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1693 if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1694 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
1695 "skipping due to FAULT state\n", ioc->name,
1696 __func__));
1697 rc = -EAGAIN;
1698 goto out;
1699 }
1700
1701 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1702 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1703 ioc->name, __func__);
1704 rc = -EAGAIN;
1705 goto out;
1706 }
1707
1708 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1709 if (!smid) {
1710 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1711 ioc->name, __func__);
1712 rc = -EAGAIN;
1713 goto out;
1714 }
1715
1716 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1717 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1718 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1719 ioc->ctl_cmds.smid = smid;
1720
1721 mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE;
1722 mpi_request->BufferType = buffer_type;
1723 mpi_request->VF_ID = 0; /* TODO */
1724 mpi_request->VP_ID = 0;
1725
1726 mpt2sas_base_put_smid_default(ioc, smid);
1727 init_completion(&ioc->ctl_cmds.done);
1728 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1729 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1730
1731 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1732 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1733 __func__);
1734 _debug_dump_mf(mpi_request,
1735 sizeof(Mpi2DiagReleaseRequest_t)/4);
1736 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1737 *issue_reset = 1;
1738 rc = -EFAULT;
1739 goto out;
1740 }
1741
1742 /* process the completed Reply Message Frame */
1743 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
1744 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
1745 ioc->name, __func__);
1746 rc = -EFAULT;
1747 goto out;
1748 }
1749
1750 mpi_reply = ioc->ctl_cmds.reply;
1751 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
1752
1753 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
1754 ioc->diag_buffer_status[buffer_type] |=
1755 MPT2_DIAG_BUFFER_IS_RELEASED;
1756 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: success\n",
1757 ioc->name, __func__));
1758 } else {
1759 printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) "
1760 "log_info(0x%08x)\n", ioc->name, __func__,
1761 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
1762 rc = -EFAULT;
1763 }
1764
1765 out:
1766 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
1767 return rc;
1768 }
1769
1770 /**
1771 * _ctl_diag_release - request to send Diag Release Message to firmware
1772 * @arg - user space buffer containing ioctl content
1773 * @state - NON_BLOCKING or BLOCKING
1774 *
1775 * This allows ownership of the specified buffer to returned to the driver,
1776 * allowing an application to read the buffer without fear that firmware is
1777 * overwritting information in the buffer.
1778 */
1779 static long
1780 _ctl_diag_release(void __user *arg, enum block_state state)
1781 {
1782 struct mpt2_diag_release karg;
1783 struct MPT2SAS_ADAPTER *ioc;
1784 void *request_data;
1785 int rc;
1786 u8 buffer_type;
1787 u8 issue_reset = 0;
1788
1789 if (copy_from_user(&karg, arg, sizeof(karg))) {
1790 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1791 __FILE__, __LINE__, __func__);
1792 return -EFAULT;
1793 }
1794 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1795 return -ENODEV;
1796
1797 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1798 __func__));
1799
1800 buffer_type = karg.unique_id & 0x000000ff;
1801 if (!_ctl_diag_capability(ioc, buffer_type)) {
1802 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1803 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1804 return -EPERM;
1805 }
1806
1807 if ((ioc->diag_buffer_status[buffer_type] &
1808 MPT2_DIAG_BUFFER_IS_REGISTERED) == 0) {
1809 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) is not "
1810 "registered\n", ioc->name, __func__, buffer_type);
1811 return -EINVAL;
1812 }
1813
1814 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1815 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1816 "registered\n", ioc->name, __func__, karg.unique_id);
1817 return -EINVAL;
1818 }
1819
1820 if (ioc->diag_buffer_status[buffer_type] &
1821 MPT2_DIAG_BUFFER_IS_RELEASED) {
1822 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1823 "is already released\n", ioc->name, __func__,
1824 buffer_type);
1825 return 0;
1826 }
1827
1828 request_data = ioc->diag_buffer[buffer_type];
1829
1830 if (!request_data) {
1831 printk(MPT2SAS_ERR_FMT "%s: doesn't have memory allocated for "
1832 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1833 return -ENOMEM;
1834 }
1835
1836 /* buffers were released by due to host reset */
1837 if ((ioc->diag_buffer_status[buffer_type] &
1838 MPT2_DIAG_BUFFER_IS_DIAG_RESET)) {
1839 ioc->diag_buffer_status[buffer_type] |=
1840 MPT2_DIAG_BUFFER_IS_RELEASED;
1841 ioc->diag_buffer_status[buffer_type] &=
1842 ~MPT2_DIAG_BUFFER_IS_DIAG_RESET;
1843 printk(MPT2SAS_ERR_FMT "%s: buffer_type(0x%02x) "
1844 "was released due to host reset\n", ioc->name, __func__,
1845 buffer_type);
1846 return 0;
1847 }
1848
1849 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1850 return -EAGAIN;
1851 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1852 return -ERESTARTSYS;
1853
1854 rc = _ctl_send_release(ioc, buffer_type, &issue_reset);
1855
1856 if (issue_reset)
1857 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1858 FORCE_BIG_HAMMER);
1859
1860 mutex_unlock(&ioc->ctl_cmds.mutex);
1861 return rc;
1862 }
1863
1864 /**
1865 * _ctl_diag_read_buffer - request for copy of the diag buffer
1866 * @arg - user space buffer containing ioctl content
1867 * @state - NON_BLOCKING or BLOCKING
1868 */
1869 static long
1870 _ctl_diag_read_buffer(void __user *arg, enum block_state state)
1871 {
1872 struct mpt2_diag_read_buffer karg;
1873 struct mpt2_diag_read_buffer __user *uarg = arg;
1874 struct MPT2SAS_ADAPTER *ioc;
1875 void *request_data, *diag_data;
1876 Mpi2DiagBufferPostRequest_t *mpi_request;
1877 Mpi2DiagBufferPostReply_t *mpi_reply;
1878 int rc, i;
1879 u8 buffer_type;
1880 unsigned long timeleft;
1881 u16 smid;
1882 u16 ioc_status;
1883 u8 issue_reset = 0;
1884
1885 if (copy_from_user(&karg, arg, sizeof(karg))) {
1886 printk(KERN_ERR "failure at %s:%d/%s()!\n",
1887 __FILE__, __LINE__, __func__);
1888 return -EFAULT;
1889 }
1890 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 || !ioc)
1891 return -ENODEV;
1892
1893 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s\n", ioc->name,
1894 __func__));
1895
1896 buffer_type = karg.unique_id & 0x000000ff;
1897 if (!_ctl_diag_capability(ioc, buffer_type)) {
1898 printk(MPT2SAS_ERR_FMT "%s: doesn't have capability for "
1899 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1900 return -EPERM;
1901 }
1902
1903 if (karg.unique_id != ioc->unique_id[buffer_type]) {
1904 printk(MPT2SAS_ERR_FMT "%s: unique_id(0x%08x) is not "
1905 "registered\n", ioc->name, __func__, karg.unique_id);
1906 return -EINVAL;
1907 }
1908
1909 request_data = ioc->diag_buffer[buffer_type];
1910 if (!request_data) {
1911 printk(MPT2SAS_ERR_FMT "%s: doesn't have buffer for "
1912 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type);
1913 return -ENOMEM;
1914 }
1915
1916 if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) {
1917 printk(MPT2SAS_ERR_FMT "%s: either the starting_offset "
1918 "or bytes_to_read are not 4 byte aligned\n", ioc->name,
1919 __func__);
1920 return -EINVAL;
1921 }
1922
1923 diag_data = (void *)(request_data + karg.starting_offset);
1924 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: diag_buffer(%p), "
1925 "offset(%d), sz(%d)\n", ioc->name, __func__,
1926 diag_data, karg.starting_offset, karg.bytes_to_read));
1927
1928 if (copy_to_user((void __user *)uarg->diagnostic_data,
1929 diag_data, karg.bytes_to_read)) {
1930 printk(MPT2SAS_ERR_FMT "%s: Unable to write "
1931 "mpt_diag_read_buffer_t data @ %p\n", ioc->name,
1932 __func__, diag_data);
1933 return -EFAULT;
1934 }
1935
1936 if ((karg.flags & MPT2_FLAGS_REREGISTER) == 0)
1937 return 0;
1938
1939 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: Reregister "
1940 "buffer_type(0x%02x)\n", ioc->name, __func__, buffer_type));
1941 if ((ioc->diag_buffer_status[buffer_type] &
1942 MPT2_DIAG_BUFFER_IS_RELEASED) == 0) {
1943 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: "
1944 "buffer_type(0x%02x) is still registered\n", ioc->name,
1945 __func__, buffer_type));
1946 return 0;
1947 }
1948 /* Get a free request frame and save the message context.
1949 */
1950 if (state == NON_BLOCKING && !mutex_trylock(&ioc->ctl_cmds.mutex))
1951 return -EAGAIN;
1952 else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex))
1953 return -ERESTARTSYS;
1954
1955 if (ioc->ctl_cmds.status != MPT2_CMD_NOT_USED) {
1956 printk(MPT2SAS_ERR_FMT "%s: ctl_cmd in use\n",
1957 ioc->name, __func__);
1958 rc = -EAGAIN;
1959 goto out;
1960 }
1961
1962 smid = mpt2sas_base_get_smid(ioc, ioc->ctl_cb_idx);
1963 if (!smid) {
1964 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1965 ioc->name, __func__);
1966 rc = -EAGAIN;
1967 goto out;
1968 }
1969
1970 rc = 0;
1971 ioc->ctl_cmds.status = MPT2_CMD_PENDING;
1972 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz);
1973 mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1974 ioc->ctl_cmds.smid = smid;
1975
1976 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST;
1977 mpi_request->BufferType = buffer_type;
1978 mpi_request->BufferLength =
1979 cpu_to_le32(ioc->diag_buffer_sz[buffer_type]);
1980 mpi_request->BufferAddress =
1981 cpu_to_le64(ioc->diag_buffer_dma[buffer_type]);
1982 for (i = 0; i < MPT2_PRODUCT_SPECIFIC_DWORDS; i++)
1983 mpi_request->ProductSpecific[i] =
1984 cpu_to_le32(ioc->product_specific[buffer_type][i]);
1985 mpi_request->VF_ID = 0; /* TODO */
1986 mpi_request->VP_ID = 0;
1987
1988 mpt2sas_base_put_smid_default(ioc, smid);
1989 init_completion(&ioc->ctl_cmds.done);
1990 timeleft = wait_for_completion_timeout(&ioc->ctl_cmds.done,
1991 MPT2_IOCTL_DEFAULT_TIMEOUT*HZ);
1992
1993 if (!(ioc->ctl_cmds.status & MPT2_CMD_COMPLETE)) {
1994 printk(MPT2SAS_ERR_FMT "%s: timeout\n", ioc->name,
1995 __func__);
1996 _debug_dump_mf(mpi_request,
1997 sizeof(Mpi2DiagBufferPostRequest_t)/4);
1998 if (!(ioc->ctl_cmds.status & MPT2_CMD_RESET))
1999 issue_reset = 1;
2000 goto issue_host_reset;
2001 }
2002
2003 /* process the completed Reply Message Frame */
2004 if ((ioc->ctl_cmds.status & MPT2_CMD_REPLY_VALID) == 0) {
2005 printk(MPT2SAS_ERR_FMT "%s: no reply message\n",
2006 ioc->name, __func__);
2007 rc = -EFAULT;
2008 goto out;
2009 }
2010
2011 mpi_reply = ioc->ctl_cmds.reply;
2012 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
2013
2014 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
2015 ioc->diag_buffer_status[buffer_type] |=
2016 MPT2_DIAG_BUFFER_IS_REGISTERED;
2017 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s: success\n",
2018 ioc->name, __func__));
2019 } else {
2020 printk(MPT2SAS_DEBUG_FMT "%s: ioc_status(0x%04x) "
2021 "log_info(0x%08x)\n", ioc->name, __func__,
2022 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo));
2023 rc = -EFAULT;
2024 }
2025
2026 issue_host_reset:
2027 if (issue_reset)
2028 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2029 FORCE_BIG_HAMMER);
2030
2031 out:
2032
2033 ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
2034 mutex_unlock(&ioc->ctl_cmds.mutex);
2035 return rc;
2036 }
2037
2038 /**
2039 * _ctl_ioctl_main - main ioctl entry point
2040 * @file - (struct file)
2041 * @cmd - ioctl opcode
2042 * @arg -
2043 */
2044 static long
2045 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg)
2046 {
2047 enum block_state state;
2048 long ret = -EINVAL;
2049
2050 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING :
2051 BLOCKING;
2052
2053 switch (cmd) {
2054 case MPT2IOCINFO:
2055 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_iocinfo))
2056 ret = _ctl_getiocinfo(arg);
2057 break;
2058 case MPT2COMMAND:
2059 {
2060 struct mpt2_ioctl_command karg;
2061 struct mpt2_ioctl_command __user *uarg;
2062 struct MPT2SAS_ADAPTER *ioc;
2063
2064 if (copy_from_user(&karg, arg, sizeof(karg))) {
2065 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2066 __FILE__, __LINE__, __func__);
2067 return -EFAULT;
2068 }
2069
2070 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
2071 !ioc)
2072 return -ENODEV;
2073
2074 if (ioc->shost_recovery)
2075 return -EAGAIN;
2076
2077 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_command)) {
2078 uarg = arg;
2079 ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
2080 }
2081 break;
2082 }
2083 case MPT2EVENTQUERY:
2084 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventquery))
2085 ret = _ctl_eventquery(arg);
2086 break;
2087 case MPT2EVENTENABLE:
2088 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_eventenable))
2089 ret = _ctl_eventenable(arg);
2090 break;
2091 case MPT2EVENTREPORT:
2092 ret = _ctl_eventreport(arg);
2093 break;
2094 case MPT2HARDRESET:
2095 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_diag_reset))
2096 ret = _ctl_do_reset(arg);
2097 break;
2098 case MPT2BTDHMAPPING:
2099 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_ioctl_btdh_mapping))
2100 ret = _ctl_btdh_mapping(arg);
2101 break;
2102 case MPT2DIAGREGISTER:
2103 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_register))
2104 ret = _ctl_diag_register(arg, state);
2105 break;
2106 case MPT2DIAGUNREGISTER:
2107 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_unregister))
2108 ret = _ctl_diag_unregister(arg);
2109 break;
2110 case MPT2DIAGQUERY:
2111 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_query))
2112 ret = _ctl_diag_query(arg);
2113 break;
2114 case MPT2DIAGRELEASE:
2115 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_release))
2116 ret = _ctl_diag_release(arg, state);
2117 break;
2118 case MPT2DIAGREADBUFFER:
2119 if (_IOC_SIZE(cmd) == sizeof(struct mpt2_diag_read_buffer))
2120 ret = _ctl_diag_read_buffer(arg, state);
2121 break;
2122 default:
2123 {
2124 struct mpt2_ioctl_command karg;
2125 struct MPT2SAS_ADAPTER *ioc;
2126
2127 if (copy_from_user(&karg, arg, sizeof(karg))) {
2128 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2129 __FILE__, __LINE__, __func__);
2130 return -EFAULT;
2131 }
2132
2133 if (_ctl_verify_adapter(karg.hdr.ioc_number, &ioc) == -1 ||
2134 !ioc)
2135 return -ENODEV;
2136
2137 dctlprintk(ioc, printk(MPT2SAS_DEBUG_FMT
2138 "unsupported ioctl opcode(0x%08x)\n", ioc->name, cmd));
2139 break;
2140 }
2141 }
2142 return ret;
2143 }
2144
2145 /**
2146 * _ctl_ioctl - main ioctl entry point (unlocked)
2147 * @file - (struct file)
2148 * @cmd - ioctl opcode
2149 * @arg -
2150 */
2151 static long
2152 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2153 {
2154 long ret;
2155
2156 lock_kernel();
2157 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
2158 unlock_kernel();
2159 return ret;
2160 }
2161
2162 #ifdef CONFIG_COMPAT
2163 /**
2164 * _ctl_compat_mpt_command - convert 32bit pointers to 64bit.
2165 * @file - (struct file)
2166 * @cmd - ioctl opcode
2167 * @arg - (struct mpt2_ioctl_command32)
2168 *
2169 * MPT2COMMAND32 - Handle 32bit applications running on 64bit os.
2170 */
2171 static long
2172 _ctl_compat_mpt_command(struct file *file, unsigned cmd, unsigned long arg)
2173 {
2174 struct mpt2_ioctl_command32 karg32;
2175 struct mpt2_ioctl_command32 __user *uarg;
2176 struct mpt2_ioctl_command karg;
2177 struct MPT2SAS_ADAPTER *ioc;
2178 enum block_state state;
2179
2180 if (_IOC_SIZE(cmd) != sizeof(struct mpt2_ioctl_command32))
2181 return -EINVAL;
2182
2183 uarg = (struct mpt2_ioctl_command32 __user *) arg;
2184
2185 if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) {
2186 printk(KERN_ERR "failure at %s:%d/%s()!\n",
2187 __FILE__, __LINE__, __func__);
2188 return -EFAULT;
2189 }
2190 if (_ctl_verify_adapter(karg32.hdr.ioc_number, &ioc) == -1 || !ioc)
2191 return -ENODEV;
2192
2193 if (ioc->shost_recovery)
2194 return -EAGAIN;
2195
2196 memset(&karg, 0, sizeof(struct mpt2_ioctl_command));
2197 karg.hdr.ioc_number = karg32.hdr.ioc_number;
2198 karg.hdr.port_number = karg32.hdr.port_number;
2199 karg.hdr.max_data_size = karg32.hdr.max_data_size;
2200 karg.timeout = karg32.timeout;
2201 karg.max_reply_bytes = karg32.max_reply_bytes;
2202 karg.data_in_size = karg32.data_in_size;
2203 karg.data_out_size = karg32.data_out_size;
2204 karg.max_sense_bytes = karg32.max_sense_bytes;
2205 karg.data_sge_offset = karg32.data_sge_offset;
2206 karg.reply_frame_buf_ptr = compat_ptr(karg32.reply_frame_buf_ptr);
2207 karg.data_in_buf_ptr = compat_ptr(karg32.data_in_buf_ptr);
2208 karg.data_out_buf_ptr = compat_ptr(karg32.data_out_buf_ptr);
2209 karg.sense_data_ptr = compat_ptr(karg32.sense_data_ptr);
2210 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING;
2211 return _ctl_do_mpt_command(ioc, karg, &uarg->mf, state);
2212 }
2213
2214 /**
2215 * _ctl_ioctl_compat - main ioctl entry point (compat)
2216 * @file -
2217 * @cmd -
2218 * @arg -
2219 *
2220 * This routine handles 32 bit applications in 64bit os.
2221 */
2222 static long
2223 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg)
2224 {
2225 long ret;
2226
2227 lock_kernel();
2228 if (cmd == MPT2COMMAND32)
2229 ret = _ctl_compat_mpt_command(file, cmd, arg);
2230 else
2231 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg);
2232 unlock_kernel();
2233 return ret;
2234 }
2235 #endif
2236
2237 /* scsi host attributes */
2238
2239 /**
2240 * _ctl_version_fw_show - firmware version
2241 * @cdev - pointer to embedded class device
2242 * @buf - the buffer returned
2243 *
2244 * A sysfs 'read-only' shost attribute.
2245 */
2246 static ssize_t
2247 _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr,
2248 char *buf)
2249 {
2250 struct Scsi_Host *shost = class_to_shost(cdev);
2251 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2252
2253 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2254 (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2255 (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2256 (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2257 ioc->facts.FWVersion.Word & 0x000000FF);
2258 }
2259 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL);
2260
2261 /**
2262 * _ctl_version_bios_show - bios version
2263 * @cdev - pointer to embedded class device
2264 * @buf - the buffer returned
2265 *
2266 * A sysfs 'read-only' shost attribute.
2267 */
2268 static ssize_t
2269 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr,
2270 char *buf)
2271 {
2272 struct Scsi_Host *shost = class_to_shost(cdev);
2273 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2274
2275 u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2276
2277 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
2278 (version & 0xFF000000) >> 24,
2279 (version & 0x00FF0000) >> 16,
2280 (version & 0x0000FF00) >> 8,
2281 version & 0x000000FF);
2282 }
2283 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL);
2284
2285 /**
2286 * _ctl_version_mpi_show - MPI (message passing interface) version
2287 * @cdev - pointer to embedded class device
2288 * @buf - the buffer returned
2289 *
2290 * A sysfs 'read-only' shost attribute.
2291 */
2292 static ssize_t
2293 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr,
2294 char *buf)
2295 {
2296 struct Scsi_Host *shost = class_to_shost(cdev);
2297 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2298
2299 return snprintf(buf, PAGE_SIZE, "%03x.%02x\n",
2300 ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8);
2301 }
2302 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL);
2303
2304 /**
2305 * _ctl_version_product_show - product name
2306 * @cdev - pointer to embedded class device
2307 * @buf - the buffer returned
2308 *
2309 * A sysfs 'read-only' shost attribute.
2310 */
2311 static ssize_t
2312 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr,
2313 char *buf)
2314 {
2315 struct Scsi_Host *shost = class_to_shost(cdev);
2316 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2317
2318 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName);
2319 }
2320 static DEVICE_ATTR(version_product, S_IRUGO,
2321 _ctl_version_product_show, NULL);
2322
2323 /**
2324 * _ctl_version_nvdata_persistent_show - ndvata persistent version
2325 * @cdev - pointer to embedded class device
2326 * @buf - the buffer returned
2327 *
2328 * A sysfs 'read-only' shost attribute.
2329 */
2330 static ssize_t
2331 _ctl_version_nvdata_persistent_show(struct device *cdev,
2332 struct device_attribute *attr, char *buf)
2333 {
2334 struct Scsi_Host *shost = class_to_shost(cdev);
2335 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2336
2337 return snprintf(buf, PAGE_SIZE, "%02xh\n",
2338 le16_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word));
2339 }
2340 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
2341 _ctl_version_nvdata_persistent_show, NULL);
2342
2343 /**
2344 * _ctl_version_nvdata_default_show - nvdata default version
2345 * @cdev - pointer to embedded class device
2346 * @buf - the buffer returned
2347 *
2348 * A sysfs 'read-only' shost attribute.
2349 */
2350 static ssize_t
2351 _ctl_version_nvdata_default_show(struct device *cdev,
2352 struct device_attribute *attr, char *buf)
2353 {
2354 struct Scsi_Host *shost = class_to_shost(cdev);
2355 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2356
2357 return snprintf(buf, PAGE_SIZE, "%02xh\n",
2358 le16_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word));
2359 }
2360 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
2361 _ctl_version_nvdata_default_show, NULL);
2362
2363 /**
2364 * _ctl_board_name_show - board name
2365 * @cdev - pointer to embedded class device
2366 * @buf - the buffer returned
2367 *
2368 * A sysfs 'read-only' shost attribute.
2369 */
2370 static ssize_t
2371 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr,
2372 char *buf)
2373 {
2374 struct Scsi_Host *shost = class_to_shost(cdev);
2375 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2376
2377 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName);
2378 }
2379 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL);
2380
2381 /**
2382 * _ctl_board_assembly_show - board assembly name
2383 * @cdev - pointer to embedded class device
2384 * @buf - the buffer returned
2385 *
2386 * A sysfs 'read-only' shost attribute.
2387 */
2388 static ssize_t
2389 _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr,
2390 char *buf)
2391 {
2392 struct Scsi_Host *shost = class_to_shost(cdev);
2393 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2394
2395 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly);
2396 }
2397 static DEVICE_ATTR(board_assembly, S_IRUGO,
2398 _ctl_board_assembly_show, NULL);
2399
2400 /**
2401 * _ctl_board_tracer_show - board tracer number
2402 * @cdev - pointer to embedded class device
2403 * @buf - the buffer returned
2404 *
2405 * A sysfs 'read-only' shost attribute.
2406 */
2407 static ssize_t
2408 _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr,
2409 char *buf)
2410 {
2411 struct Scsi_Host *shost = class_to_shost(cdev);
2412 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2413
2414 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber);
2415 }
2416 static DEVICE_ATTR(board_tracer, S_IRUGO,
2417 _ctl_board_tracer_show, NULL);
2418
2419 /**
2420 * _ctl_io_delay_show - io missing delay
2421 * @cdev - pointer to embedded class device
2422 * @buf - the buffer returned
2423 *
2424 * This is for firmware implemention for deboucing device
2425 * removal events.
2426 *
2427 * A sysfs 'read-only' shost attribute.
2428 */
2429 static ssize_t
2430 _ctl_io_delay_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, "%02d\n", ioc->io_missing_delay);
2437 }
2438 static DEVICE_ATTR(io_delay, S_IRUGO,
2439 _ctl_io_delay_show, NULL);
2440
2441 /**
2442 * _ctl_device_delay_show - device missing delay
2443 * @cdev - pointer to embedded class device
2444 * @buf - the buffer returned
2445 *
2446 * This is for firmware implemention for deboucing device
2447 * removal events.
2448 *
2449 * A sysfs 'read-only' shost attribute.
2450 */
2451 static ssize_t
2452 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr,
2453 char *buf)
2454 {
2455 struct Scsi_Host *shost = class_to_shost(cdev);
2456 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2457
2458 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
2459 }
2460 static DEVICE_ATTR(device_delay, S_IRUGO,
2461 _ctl_device_delay_show, NULL);
2462
2463 /**
2464 * _ctl_fw_queue_depth_show - global credits
2465 * @cdev - pointer to embedded class device
2466 * @buf - the buffer returned
2467 *
2468 * This is firmware queue depth limit
2469 *
2470 * A sysfs 'read-only' shost attribute.
2471 */
2472 static ssize_t
2473 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr,
2474 char *buf)
2475 {
2476 struct Scsi_Host *shost = class_to_shost(cdev);
2477 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2478
2479 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit);
2480 }
2481 static DEVICE_ATTR(fw_queue_depth, S_IRUGO,
2482 _ctl_fw_queue_depth_show, NULL);
2483
2484 /**
2485 * _ctl_sas_address_show - sas address
2486 * @cdev - pointer to embedded class device
2487 * @buf - the buffer returned
2488 *
2489 * This is the controller sas address
2490 *
2491 * A sysfs 'read-only' shost attribute.
2492 */
2493 static ssize_t
2494 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr,
2495 char *buf)
2496 {
2497 struct Scsi_Host *shost = class_to_shost(cdev);
2498 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2499
2500 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2501 (unsigned long long)ioc->sas_hba.sas_address);
2502 }
2503 static DEVICE_ATTR(host_sas_address, S_IRUGO,
2504 _ctl_host_sas_address_show, NULL);
2505
2506 /**
2507 * _ctl_logging_level_show - logging level
2508 * @cdev - pointer to embedded class device
2509 * @buf - the buffer returned
2510 *
2511 * A sysfs 'read/write' shost attribute.
2512 */
2513 static ssize_t
2514 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr,
2515 char *buf)
2516 {
2517 struct Scsi_Host *shost = class_to_shost(cdev);
2518 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2519
2520 return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level);
2521 }
2522 static ssize_t
2523 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr,
2524 const char *buf, size_t count)
2525 {
2526 struct Scsi_Host *shost = class_to_shost(cdev);
2527 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2528 int val = 0;
2529
2530 if (sscanf(buf, "%x", &val) != 1)
2531 return -EINVAL;
2532
2533 ioc->logging_level = val;
2534 printk(MPT2SAS_INFO_FMT "logging_level=%08xh\n", ioc->name,
2535 ioc->logging_level);
2536 return strlen(buf);
2537 }
2538 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
2539 _ctl_logging_level_show, _ctl_logging_level_store);
2540
2541 /* device attributes */
2542 /*
2543 * _ctl_fwfault_debug_show - show/store fwfault_debug
2544 * @cdev - pointer to embedded class device
2545 * @buf - the buffer returned
2546 *
2547 * mpt2sas_fwfault_debug is command line option
2548 * A sysfs 'read/write' shost attribute.
2549 */
2550 static ssize_t
2551 _ctl_fwfault_debug_show(struct device *cdev,
2552 struct device_attribute *attr, char *buf)
2553 {
2554 struct Scsi_Host *shost = class_to_shost(cdev);
2555 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2556
2557 return snprintf(buf, PAGE_SIZE, "%d\n", ioc->fwfault_debug);
2558 }
2559 static ssize_t
2560 _ctl_fwfault_debug_store(struct device *cdev,
2561 struct device_attribute *attr, const char *buf, size_t count)
2562 {
2563 struct Scsi_Host *shost = class_to_shost(cdev);
2564 struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
2565 int val = 0;
2566
2567 if (sscanf(buf, "%d", &val) != 1)
2568 return -EINVAL;
2569
2570 ioc->fwfault_debug = val;
2571 printk(MPT2SAS_INFO_FMT "fwfault_debug=%d\n", ioc->name,
2572 ioc->fwfault_debug);
2573 return strlen(buf);
2574 }
2575 static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR,
2576 _ctl_fwfault_debug_show, _ctl_fwfault_debug_store);
2577
2578 struct device_attribute *mpt2sas_host_attrs[] = {
2579 &dev_attr_version_fw,
2580 &dev_attr_version_bios,
2581 &dev_attr_version_mpi,
2582 &dev_attr_version_product,
2583 &dev_attr_version_nvdata_persistent,
2584 &dev_attr_version_nvdata_default,
2585 &dev_attr_board_name,
2586 &dev_attr_board_assembly,
2587 &dev_attr_board_tracer,
2588 &dev_attr_io_delay,
2589 &dev_attr_device_delay,
2590 &dev_attr_logging_level,
2591 &dev_attr_fwfault_debug,
2592 &dev_attr_fw_queue_depth,
2593 &dev_attr_host_sas_address,
2594 NULL,
2595 };
2596
2597 /**
2598 * _ctl_device_sas_address_show - sas address
2599 * @cdev - pointer to embedded class device
2600 * @buf - the buffer returned
2601 *
2602 * This is the sas address for the target
2603 *
2604 * A sysfs 'read-only' shost attribute.
2605 */
2606 static ssize_t
2607 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr,
2608 char *buf)
2609 {
2610 struct scsi_device *sdev = to_scsi_device(dev);
2611 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2612
2613 return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
2614 (unsigned long long)sas_device_priv_data->sas_target->sas_address);
2615 }
2616 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL);
2617
2618 /**
2619 * _ctl_device_handle_show - device handle
2620 * @cdev - pointer to embedded class device
2621 * @buf - the buffer returned
2622 *
2623 * This is the firmware assigned device handle
2624 *
2625 * A sysfs 'read-only' shost attribute.
2626 */
2627 static ssize_t
2628 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr,
2629 char *buf)
2630 {
2631 struct scsi_device *sdev = to_scsi_device(dev);
2632 struct MPT2SAS_DEVICE *sas_device_priv_data = sdev->hostdata;
2633
2634 return snprintf(buf, PAGE_SIZE, "0x%04x\n",
2635 sas_device_priv_data->sas_target->handle);
2636 }
2637 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL);
2638
2639 struct device_attribute *mpt2sas_dev_attrs[] = {
2640 &dev_attr_sas_address,
2641 &dev_attr_sas_device_handle,
2642 NULL,
2643 };
2644
2645 static const struct file_operations ctl_fops = {
2646 .owner = THIS_MODULE,
2647 .unlocked_ioctl = _ctl_ioctl,
2648 .release = _ctl_release,
2649 .poll = _ctl_poll,
2650 .fasync = _ctl_fasync,
2651 #ifdef CONFIG_COMPAT
2652 .compat_ioctl = _ctl_ioctl_compat,
2653 #endif
2654 };
2655
2656 static struct miscdevice ctl_dev = {
2657 .minor = MPT2SAS_MINOR,
2658 .name = MPT2SAS_DEV_NAME,
2659 .fops = &ctl_fops,
2660 };
2661
2662 /**
2663 * mpt2sas_ctl_init - main entry point for ctl.
2664 *
2665 */
2666 void
2667 mpt2sas_ctl_init(void)
2668 {
2669 async_queue = NULL;
2670 if (misc_register(&ctl_dev) < 0)
2671 printk(KERN_ERR "%s can't register misc device [minor=%d]\n",
2672 MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR);
2673
2674 init_waitqueue_head(&ctl_poll_wait);
2675 }
2676
2677 /**
2678 * mpt2sas_ctl_exit - exit point for ctl
2679 *
2680 */
2681 void
2682 mpt2sas_ctl_exit(void)
2683 {
2684 struct MPT2SAS_ADAPTER *ioc;
2685 int i;
2686
2687 list_for_each_entry(ioc, &mpt2sas_ioc_list, list) {
2688
2689 /* free memory associated to diag buffers */
2690 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) {
2691 if (!ioc->diag_buffer[i])
2692 continue;
2693 pci_free_consistent(ioc->pdev, ioc->diag_buffer_sz[i],
2694 ioc->diag_buffer[i], ioc->diag_buffer_dma[i]);
2695 ioc->diag_buffer[i] = NULL;
2696 ioc->diag_buffer_status[i] = 0;
2697 }
2698
2699 kfree(ioc->event_log);
2700 }
2701 misc_deregister(&ctl_dev);
2702 }
2703
kernel-based virtual machine