1 /* 2 * Management Module Support for MPT (Message Passing Technology) based 3 * controllers 4 * 5 * This code is based on drivers/scsi/mpt3sas/mpt3sas_ctl.c 6 * Copyright (C) 2012-2014 LSI Corporation 7 * Copyright (C) 2013-2014 Avago Technologies 8 * (mailto: MPT-FusionLinux.pdl@avagotech.com) 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License 12 * as published by the Free Software Foundation; either version 2 13 * of the License, or (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * NO WARRANTY 21 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR 22 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT 23 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, 24 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is 25 * solely responsible for determining the appropriateness of using and 26 * distributing the Program and assumes all risks associated with its 27 * exercise of rights under this Agreement, including but not limited to 28 * the risks and costs of program errors, damage to or loss of data, 29 * programs or equipment, and unavailability or interruption of operations. 30 31 * DISCLAIMER OF LIABILITY 32 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY 33 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND 35 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 36 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 37 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED 38 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES 39 40 * You should have received a copy of the GNU General Public License 41 * along with this program; if not, write to the Free Software 42 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 43 * USA. 44 */ 45 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/compat.h> 55 #include <linux/poll.h> 56 57 #include <linux/io.h> 58 #include <linux/uaccess.h> 59 60 #include "mpt3sas_base.h" 61 #include "mpt3sas_ctl.h" 62 63 64 static struct fasync_struct *async_queue; 65 static DECLARE_WAIT_QUEUE_HEAD(ctl_poll_wait); 66 67 68 /** 69 * enum block_state - blocking state 70 * @NON_BLOCKING: non blocking 71 * @BLOCKING: blocking 72 * 73 * These states are for ioctls that need to wait for a response 74 * from firmware, so they probably require sleep. 75 */ 76 enum block_state { 77 NON_BLOCKING, 78 BLOCKING, 79 }; 80 81 /** 82 * _ctl_display_some_debug - debug routine 83 * @ioc: per adapter object 84 * @smid: system request message index 85 * @calling_function_name: string pass from calling function 86 * @mpi_reply: reply message frame 87 * Context: none. 88 * 89 * Function for displaying debug info helpful when debugging issues 90 * in this module. 91 */ 92 static void 93 _ctl_display_some_debug(struct MPT3SAS_ADAPTER *ioc, u16 smid, 94 char *calling_function_name, MPI2DefaultReply_t *mpi_reply) 95 { 96 Mpi2ConfigRequest_t *mpi_request; 97 char *desc = NULL; 98 99 if (!(ioc->logging_level & MPT_DEBUG_IOCTL)) 100 return; 101 102 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); 103 switch (mpi_request->Function) { 104 case MPI2_FUNCTION_SCSI_IO_REQUEST: 105 { 106 Mpi2SCSIIORequest_t *scsi_request = 107 (Mpi2SCSIIORequest_t *)mpi_request; 108 109 snprintf(ioc->tmp_string, MPT_STRING_LENGTH, 110 "scsi_io, cmd(0x%02x), cdb_len(%d)", 111 scsi_request->CDB.CDB32[0], 112 le16_to_cpu(scsi_request->IoFlags) & 0xF); 113 desc = ioc->tmp_string; 114 break; 115 } 116 case MPI2_FUNCTION_SCSI_TASK_MGMT: 117 desc = "task_mgmt"; 118 break; 119 case MPI2_FUNCTION_IOC_INIT: 120 desc = "ioc_init"; 121 break; 122 case MPI2_FUNCTION_IOC_FACTS: 123 desc = "ioc_facts"; 124 break; 125 case MPI2_FUNCTION_CONFIG: 126 { 127 Mpi2ConfigRequest_t *config_request = 128 (Mpi2ConfigRequest_t *)mpi_request; 129 130 snprintf(ioc->tmp_string, MPT_STRING_LENGTH, 131 "config, type(0x%02x), ext_type(0x%02x), number(%d)", 132 (config_request->Header.PageType & 133 MPI2_CONFIG_PAGETYPE_MASK), config_request->ExtPageType, 134 config_request->Header.PageNumber); 135 desc = ioc->tmp_string; 136 break; 137 } 138 case MPI2_FUNCTION_PORT_FACTS: 139 desc = "port_facts"; 140 break; 141 case MPI2_FUNCTION_PORT_ENABLE: 142 desc = "port_enable"; 143 break; 144 case MPI2_FUNCTION_EVENT_NOTIFICATION: 145 desc = "event_notification"; 146 break; 147 case MPI2_FUNCTION_FW_DOWNLOAD: 148 desc = "fw_download"; 149 break; 150 case MPI2_FUNCTION_FW_UPLOAD: 151 desc = "fw_upload"; 152 break; 153 case MPI2_FUNCTION_RAID_ACTION: 154 desc = "raid_action"; 155 break; 156 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH: 157 { 158 Mpi2SCSIIORequest_t *scsi_request = 159 (Mpi2SCSIIORequest_t *)mpi_request; 160 161 snprintf(ioc->tmp_string, MPT_STRING_LENGTH, 162 "raid_pass, cmd(0x%02x), cdb_len(%d)", 163 scsi_request->CDB.CDB32[0], 164 le16_to_cpu(scsi_request->IoFlags) & 0xF); 165 desc = ioc->tmp_string; 166 break; 167 } 168 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL: 169 desc = "sas_iounit_cntl"; 170 break; 171 case MPI2_FUNCTION_SATA_PASSTHROUGH: 172 desc = "sata_pass"; 173 break; 174 case MPI2_FUNCTION_DIAG_BUFFER_POST: 175 desc = "diag_buffer_post"; 176 break; 177 case MPI2_FUNCTION_DIAG_RELEASE: 178 desc = "diag_release"; 179 break; 180 case MPI2_FUNCTION_SMP_PASSTHROUGH: 181 desc = "smp_passthrough"; 182 break; 183 } 184 185 if (!desc) 186 return; 187 188 ioc_info(ioc, "%s: %s, smid(%d)\n", calling_function_name, desc, smid); 189 190 if (!mpi_reply) 191 return; 192 193 if (mpi_reply->IOCStatus || mpi_reply->IOCLogInfo) 194 ioc_info(ioc, "\tiocstatus(0x%04x), loginfo(0x%08x)\n", 195 le16_to_cpu(mpi_reply->IOCStatus), 196 le32_to_cpu(mpi_reply->IOCLogInfo)); 197 198 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST || 199 mpi_request->Function == 200 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) { 201 Mpi2SCSIIOReply_t *scsi_reply = 202 (Mpi2SCSIIOReply_t *)mpi_reply; 203 struct _sas_device *sas_device = NULL; 204 struct _pcie_device *pcie_device = NULL; 205 206 sas_device = mpt3sas_get_sdev_by_handle(ioc, 207 le16_to_cpu(scsi_reply->DevHandle)); 208 if (sas_device) { 209 ioc_warn(ioc, "\tsas_address(0x%016llx), phy(%d)\n", 210 (u64)sas_device->sas_address, 211 sas_device->phy); 212 ioc_warn(ioc, "\tenclosure_logical_id(0x%016llx), slot(%d)\n", 213 (u64)sas_device->enclosure_logical_id, 214 sas_device->slot); 215 sas_device_put(sas_device); 216 } 217 if (!sas_device) { 218 pcie_device = mpt3sas_get_pdev_by_handle(ioc, 219 le16_to_cpu(scsi_reply->DevHandle)); 220 if (pcie_device) { 221 ioc_warn(ioc, "\tWWID(0x%016llx), port(%d)\n", 222 (unsigned long long)pcie_device->wwid, 223 pcie_device->port_num); 224 if (pcie_device->enclosure_handle != 0) 225 ioc_warn(ioc, "\tenclosure_logical_id(0x%016llx), slot(%d)\n", 226 (u64)pcie_device->enclosure_logical_id, 227 pcie_device->slot); 228 pcie_device_put(pcie_device); 229 } 230 } 231 if (scsi_reply->SCSIState || scsi_reply->SCSIStatus) 232 ioc_info(ioc, "\tscsi_state(0x%02x), scsi_status(0x%02x)\n", 233 scsi_reply->SCSIState, 234 scsi_reply->SCSIStatus); 235 } 236 } 237 238 /** 239 * mpt3sas_ctl_done - ctl module completion routine 240 * @ioc: per adapter object 241 * @smid: system request message index 242 * @msix_index: MSIX table index supplied by the OS 243 * @reply: reply message frame(lower 32bit addr) 244 * Context: none. 245 * 246 * The callback handler when using ioc->ctl_cb_idx. 247 * 248 * Return: 1 meaning mf should be freed from _base_interrupt 249 * 0 means the mf is freed from this function. 250 */ 251 u8 252 mpt3sas_ctl_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, 253 u32 reply) 254 { 255 MPI2DefaultReply_t *mpi_reply; 256 Mpi2SCSIIOReply_t *scsiio_reply; 257 Mpi26NVMeEncapsulatedErrorReply_t *nvme_error_reply; 258 const void *sense_data; 259 u32 sz; 260 261 if (ioc->ctl_cmds.status == MPT3_CMD_NOT_USED) 262 return 1; 263 if (ioc->ctl_cmds.smid != smid) 264 return 1; 265 ioc->ctl_cmds.status |= MPT3_CMD_COMPLETE; 266 mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply); 267 if (mpi_reply) { 268 memcpy(ioc->ctl_cmds.reply, mpi_reply, mpi_reply->MsgLength*4); 269 ioc->ctl_cmds.status |= MPT3_CMD_REPLY_VALID; 270 /* get sense data */ 271 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_IO_REQUEST || 272 mpi_reply->Function == 273 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH) { 274 scsiio_reply = (Mpi2SCSIIOReply_t *)mpi_reply; 275 if (scsiio_reply->SCSIState & 276 MPI2_SCSI_STATE_AUTOSENSE_VALID) { 277 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE, 278 le32_to_cpu(scsiio_reply->SenseCount)); 279 sense_data = mpt3sas_base_get_sense_buffer(ioc, 280 smid); 281 memcpy(ioc->ctl_cmds.sense, sense_data, sz); 282 } 283 } 284 /* 285 * Get Error Response data for NVMe device. The ctl_cmds.sense 286 * buffer is used to store the Error Response data. 287 */ 288 if (mpi_reply->Function == MPI2_FUNCTION_NVME_ENCAPSULATED) { 289 nvme_error_reply = 290 (Mpi26NVMeEncapsulatedErrorReply_t *)mpi_reply; 291 sz = min_t(u32, NVME_ERROR_RESPONSE_SIZE, 292 le16_to_cpu(nvme_error_reply->ErrorResponseCount)); 293 sense_data = mpt3sas_base_get_sense_buffer(ioc, smid); 294 memcpy(ioc->ctl_cmds.sense, sense_data, sz); 295 } 296 } 297 298 _ctl_display_some_debug(ioc, smid, "ctl_done", mpi_reply); 299 ioc->ctl_cmds.status &= ~MPT3_CMD_PENDING; 300 complete(&ioc->ctl_cmds.done); 301 return 1; 302 } 303 304 /** 305 * _ctl_check_event_type - determines when an event needs logging 306 * @ioc: per adapter object 307 * @event: firmware event 308 * 309 * The bitmask in ioc->event_type[] indicates which events should be 310 * be saved in the driver event_log. This bitmask is set by application. 311 * 312 * Return: 1 when event should be captured, or zero means no match. 313 */ 314 static int 315 _ctl_check_event_type(struct MPT3SAS_ADAPTER *ioc, u16 event) 316 { 317 u16 i; 318 u32 desired_event; 319 320 if (event >= 128 || !event || !ioc->event_log) 321 return 0; 322 323 desired_event = (1 << (event % 32)); 324 if (!desired_event) 325 desired_event = 1; 326 i = event / 32; 327 return desired_event & ioc->event_type[i]; 328 } 329 330 /** 331 * mpt3sas_ctl_add_to_event_log - add event 332 * @ioc: per adapter object 333 * @mpi_reply: reply message frame 334 */ 335 void 336 mpt3sas_ctl_add_to_event_log(struct MPT3SAS_ADAPTER *ioc, 337 Mpi2EventNotificationReply_t *mpi_reply) 338 { 339 struct MPT3_IOCTL_EVENTS *event_log; 340 u16 event; 341 int i; 342 u32 sz, event_data_sz; 343 u8 send_aen = 0; 344 345 if (!ioc->event_log) 346 return; 347 348 event = le16_to_cpu(mpi_reply->Event); 349 350 if (_ctl_check_event_type(ioc, event)) { 351 352 /* insert entry into circular event_log */ 353 i = ioc->event_context % MPT3SAS_CTL_EVENT_LOG_SIZE; 354 event_log = ioc->event_log; 355 event_log[i].event = event; 356 event_log[i].context = ioc->event_context++; 357 358 event_data_sz = le16_to_cpu(mpi_reply->EventDataLength)*4; 359 sz = min_t(u32, event_data_sz, MPT3_EVENT_DATA_SIZE); 360 memset(event_log[i].data, 0, MPT3_EVENT_DATA_SIZE); 361 memcpy(event_log[i].data, mpi_reply->EventData, sz); 362 send_aen = 1; 363 } 364 365 /* This aen_event_read_flag flag is set until the 366 * application has read the event log. 367 * For MPI2_EVENT_LOG_ENTRY_ADDED, we always notify. 368 */ 369 if (event == MPI2_EVENT_LOG_ENTRY_ADDED || 370 (send_aen && !ioc->aen_event_read_flag)) { 371 ioc->aen_event_read_flag = 1; 372 wake_up_interruptible(&ctl_poll_wait); 373 if (async_queue) 374 kill_fasync(&async_queue, SIGIO, POLL_IN); 375 } 376 } 377 378 /** 379 * mpt3sas_ctl_event_callback - firmware event handler (called at ISR time) 380 * @ioc: per adapter object 381 * @msix_index: MSIX table index supplied by the OS 382 * @reply: reply message frame(lower 32bit addr) 383 * Context: interrupt. 384 * 385 * This function merely adds a new work task into ioc->firmware_event_thread. 386 * The tasks are worked from _firmware_event_work in user context. 387 * 388 * Return: 1 meaning mf should be freed from _base_interrupt 389 * 0 means the mf is freed from this function. 390 */ 391 u8 392 mpt3sas_ctl_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index, 393 u32 reply) 394 { 395 Mpi2EventNotificationReply_t *mpi_reply; 396 397 mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply); 398 if (mpi_reply) 399 mpt3sas_ctl_add_to_event_log(ioc, mpi_reply); 400 return 1; 401 } 402 403 /** 404 * _ctl_verify_adapter - validates ioc_number passed from application 405 * @ioc_number: ? 406 * @iocpp: The ioc pointer is returned in this. 407 * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device & 408 * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device. 409 * 410 * Return: (-1) means error, else ioc_number. 411 */ 412 static int 413 _ctl_verify_adapter(int ioc_number, struct MPT3SAS_ADAPTER **iocpp, 414 int mpi_version) 415 { 416 struct MPT3SAS_ADAPTER *ioc; 417 int version = 0; 418 /* global ioc lock to protect controller on list operations */ 419 spin_lock(&gioc_lock); 420 list_for_each_entry(ioc, &mpt3sas_ioc_list, list) { 421 if (ioc->id != ioc_number) 422 continue; 423 /* Check whether this ioctl command is from right 424 * ioctl device or not, if not continue the search. 425 */ 426 version = ioc->hba_mpi_version_belonged; 427 /* MPI25_VERSION and MPI26_VERSION uses same ioctl 428 * device. 429 */ 430 if (mpi_version == (MPI25_VERSION | MPI26_VERSION)) { 431 if ((version == MPI25_VERSION) || 432 (version == MPI26_VERSION)) 433 goto out; 434 else 435 continue; 436 } else { 437 if (version != mpi_version) 438 continue; 439 } 440 out: 441 spin_unlock(&gioc_lock); 442 *iocpp = ioc; 443 return ioc_number; 444 } 445 spin_unlock(&gioc_lock); 446 *iocpp = NULL; 447 return -1; 448 } 449 450 /** 451 * mpt3sas_ctl_reset_handler - reset callback handler (for ctl) 452 * @ioc: per adapter object 453 * 454 * The handler for doing any required cleanup or initialization. 455 */ 456 void mpt3sas_ctl_pre_reset_handler(struct MPT3SAS_ADAPTER *ioc) 457 { 458 int i; 459 u8 issue_reset; 460 461 dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_PRE_RESET\n", __func__)); 462 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) { 463 if (!(ioc->diag_buffer_status[i] & 464 MPT3_DIAG_BUFFER_IS_REGISTERED)) 465 continue; 466 if ((ioc->diag_buffer_status[i] & 467 MPT3_DIAG_BUFFER_IS_RELEASED)) 468 continue; 469 mpt3sas_send_diag_release(ioc, i, &issue_reset); 470 } 471 } 472 473 /** 474 * mpt3sas_ctl_reset_handler - reset callback handler (for ctl) 475 * @ioc: per adapter object 476 * 477 * The handler for doing any required cleanup or initialization. 478 */ 479 void mpt3sas_ctl_after_reset_handler(struct MPT3SAS_ADAPTER *ioc) 480 { 481 dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_AFTER_RESET\n", __func__)); 482 if (ioc->ctl_cmds.status & MPT3_CMD_PENDING) { 483 ioc->ctl_cmds.status |= MPT3_CMD_RESET; 484 mpt3sas_base_free_smid(ioc, ioc->ctl_cmds.smid); 485 complete(&ioc->ctl_cmds.done); 486 } 487 } 488 489 /** 490 * mpt3sas_ctl_reset_handler - reset callback handler (for ctl) 491 * @ioc: per adapter object 492 * 493 * The handler for doing any required cleanup or initialization. 494 */ 495 void mpt3sas_ctl_reset_done_handler(struct MPT3SAS_ADAPTER *ioc) 496 { 497 int i; 498 499 dtmprintk(ioc, ioc_info(ioc, "%s: MPT3_IOC_DONE_RESET\n", __func__)); 500 501 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) { 502 if (!(ioc->diag_buffer_status[i] & 503 MPT3_DIAG_BUFFER_IS_REGISTERED)) 504 continue; 505 if ((ioc->diag_buffer_status[i] & 506 MPT3_DIAG_BUFFER_IS_RELEASED)) 507 continue; 508 ioc->diag_buffer_status[i] |= 509 MPT3_DIAG_BUFFER_IS_DIAG_RESET; 510 } 511 } 512 513 /** 514 * _ctl_fasync - 515 * @fd: ? 516 * @filep: ? 517 * @mode: ? 518 * 519 * Called when application request fasyn callback handler. 520 */ 521 static int 522 _ctl_fasync(int fd, struct file *filep, int mode) 523 { 524 return fasync_helper(fd, filep, mode, &async_queue); 525 } 526 527 /** 528 * _ctl_poll - 529 * @filep: ? 530 * @wait: ? 531 * 532 */ 533 static __poll_t 534 _ctl_poll(struct file *filep, poll_table *wait) 535 { 536 struct MPT3SAS_ADAPTER *ioc; 537 538 poll_wait(filep, &ctl_poll_wait, wait); 539 540 /* global ioc lock to protect controller on list operations */ 541 spin_lock(&gioc_lock); 542 list_for_each_entry(ioc, &mpt3sas_ioc_list, list) { 543 if (ioc->aen_event_read_flag) { 544 spin_unlock(&gioc_lock); 545 return EPOLLIN | EPOLLRDNORM; 546 } 547 } 548 spin_unlock(&gioc_lock); 549 return 0; 550 } 551 552 /** 553 * _ctl_set_task_mid - assign an active smid to tm request 554 * @ioc: per adapter object 555 * @karg: (struct mpt3_ioctl_command) 556 * @tm_request: pointer to mf from user space 557 * 558 * Return: 0 when an smid if found, else fail. 559 * during failure, the reply frame is filled. 560 */ 561 static int 562 _ctl_set_task_mid(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command *karg, 563 Mpi2SCSITaskManagementRequest_t *tm_request) 564 { 565 u8 found = 0; 566 u16 smid; 567 u16 handle; 568 struct scsi_cmnd *scmd; 569 struct MPT3SAS_DEVICE *priv_data; 570 Mpi2SCSITaskManagementReply_t *tm_reply; 571 u32 sz; 572 u32 lun; 573 char *desc = NULL; 574 575 if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK) 576 desc = "abort_task"; 577 else if (tm_request->TaskType == MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) 578 desc = "query_task"; 579 else 580 return 0; 581 582 lun = scsilun_to_int((struct scsi_lun *)tm_request->LUN); 583 584 handle = le16_to_cpu(tm_request->DevHandle); 585 for (smid = ioc->scsiio_depth; smid && !found; smid--) { 586 struct scsiio_tracker *st; 587 588 scmd = mpt3sas_scsih_scsi_lookup_get(ioc, smid); 589 if (!scmd) 590 continue; 591 if (lun != scmd->device->lun) 592 continue; 593 priv_data = scmd->device->hostdata; 594 if (priv_data->sas_target == NULL) 595 continue; 596 if (priv_data->sas_target->handle != handle) 597 continue; 598 st = scsi_cmd_priv(scmd); 599 tm_request->TaskMID = cpu_to_le16(st->smid); 600 found = 1; 601 } 602 603 if (!found) { 604 dctlprintk(ioc, 605 ioc_info(ioc, "%s: handle(0x%04x), lun(%d), no active mid!!\n", 606 desc, le16_to_cpu(tm_request->DevHandle), 607 lun)); 608 tm_reply = ioc->ctl_cmds.reply; 609 tm_reply->DevHandle = tm_request->DevHandle; 610 tm_reply->Function = MPI2_FUNCTION_SCSI_TASK_MGMT; 611 tm_reply->TaskType = tm_request->TaskType; 612 tm_reply->MsgLength = sizeof(Mpi2SCSITaskManagementReply_t)/4; 613 tm_reply->VP_ID = tm_request->VP_ID; 614 tm_reply->VF_ID = tm_request->VF_ID; 615 sz = min_t(u32, karg->max_reply_bytes, ioc->reply_sz); 616 if (copy_to_user(karg->reply_frame_buf_ptr, ioc->ctl_cmds.reply, 617 sz)) 618 pr_err("failure at %s:%d/%s()!\n", __FILE__, 619 __LINE__, __func__); 620 return 1; 621 } 622 623 dctlprintk(ioc, 624 ioc_info(ioc, "%s: handle(0x%04x), lun(%d), task_mid(%d)\n", 625 desc, le16_to_cpu(tm_request->DevHandle), lun, 626 le16_to_cpu(tm_request->TaskMID))); 627 return 0; 628 } 629 630 /** 631 * _ctl_do_mpt_command - main handler for MPT3COMMAND opcode 632 * @ioc: per adapter object 633 * @karg: (struct mpt3_ioctl_command) 634 * @mf: pointer to mf in user space 635 */ 636 static long 637 _ctl_do_mpt_command(struct MPT3SAS_ADAPTER *ioc, struct mpt3_ioctl_command karg, 638 void __user *mf) 639 { 640 MPI2RequestHeader_t *mpi_request = NULL, *request; 641 MPI2DefaultReply_t *mpi_reply; 642 Mpi26NVMeEncapsulatedRequest_t *nvme_encap_request = NULL; 643 struct _pcie_device *pcie_device = NULL; 644 u16 smid; 645 u8 timeout; 646 u8 issue_reset; 647 u32 sz, sz_arg; 648 void *psge; 649 void *data_out = NULL; 650 dma_addr_t data_out_dma = 0; 651 size_t data_out_sz = 0; 652 void *data_in = NULL; 653 dma_addr_t data_in_dma = 0; 654 size_t data_in_sz = 0; 655 long ret; 656 u16 device_handle = MPT3SAS_INVALID_DEVICE_HANDLE; 657 u8 tr_method = MPI26_SCSITASKMGMT_MSGFLAGS_PROTOCOL_LVL_RST_PCIE; 658 659 issue_reset = 0; 660 661 if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) { 662 ioc_err(ioc, "%s: ctl_cmd in use\n", __func__); 663 ret = -EAGAIN; 664 goto out; 665 } 666 667 ret = mpt3sas_wait_for_ioc(ioc, IOC_OPERATIONAL_WAIT_COUNT); 668 if (ret) 669 goto out; 670 671 mpi_request = kzalloc(ioc->request_sz, GFP_KERNEL); 672 if (!mpi_request) { 673 ioc_err(ioc, "%s: failed obtaining a memory for mpi_request\n", 674 __func__); 675 ret = -ENOMEM; 676 goto out; 677 } 678 679 /* Check for overflow and wraparound */ 680 if (karg.data_sge_offset * 4 > ioc->request_sz || 681 karg.data_sge_offset > (UINT_MAX / 4)) { 682 ret = -EINVAL; 683 goto out; 684 } 685 686 /* copy in request message frame from user */ 687 if (copy_from_user(mpi_request, mf, karg.data_sge_offset*4)) { 688 pr_err("failure at %s:%d/%s()!\n", __FILE__, __LINE__, 689 __func__); 690 ret = -EFAULT; 691 goto out; 692 } 693 694 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) { 695 smid = mpt3sas_base_get_smid_hpr(ioc, ioc->ctl_cb_idx); 696 if (!smid) { 697 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__); 698 ret = -EAGAIN; 699 goto out; 700 } 701 } else { 702 /* Use first reserved smid for passthrough ioctls */ 703 smid = ioc->scsiio_depth - INTERNAL_SCSIIO_CMDS_COUNT + 1; 704 } 705 706 ret = 0; 707 ioc->ctl_cmds.status = MPT3_CMD_PENDING; 708 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz); 709 request = mpt3sas_base_get_msg_frame(ioc, smid); 710 memcpy(request, mpi_request, karg.data_sge_offset*4); 711 ioc->ctl_cmds.smid = smid; 712 data_out_sz = karg.data_out_size; 713 data_in_sz = karg.data_in_size; 714 715 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST || 716 mpi_request->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH || 717 mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT || 718 mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH || 719 mpi_request->Function == MPI2_FUNCTION_NVME_ENCAPSULATED) { 720 721 device_handle = le16_to_cpu(mpi_request->FunctionDependent1); 722 if (!device_handle || (device_handle > 723 ioc->facts.MaxDevHandle)) { 724 ret = -EINVAL; 725 mpt3sas_base_free_smid(ioc, smid); 726 goto out; 727 } 728 } 729 730 /* obtain dma-able memory for data transfer */ 731 if (data_out_sz) /* WRITE */ { 732 data_out = dma_alloc_coherent(&ioc->pdev->dev, data_out_sz, 733 &data_out_dma, GFP_KERNEL); 734 if (!data_out) { 735 pr_err("failure at %s:%d/%s()!\n", __FILE__, 736 __LINE__, __func__); 737 ret = -ENOMEM; 738 mpt3sas_base_free_smid(ioc, smid); 739 goto out; 740 } 741 if (copy_from_user(data_out, karg.data_out_buf_ptr, 742 data_out_sz)) { 743 pr_err("failure at %s:%d/%s()!\n", __FILE__, 744 __LINE__, __func__); 745 ret = -EFAULT; 746 mpt3sas_base_free_smid(ioc, smid); 747 goto out; 748 } 749 } 750 751 if (data_in_sz) /* READ */ { 752 data_in = dma_alloc_coherent(&ioc->pdev->dev, data_in_sz, 753 &data_in_dma, GFP_KERNEL); 754 if (!data_in) { 755 pr_err("failure at %s:%d/%s()!\n", __FILE__, 756 __LINE__, __func__); 757 ret = -ENOMEM; 758 mpt3sas_base_free_smid(ioc, smid); 759 goto out; 760 } 761 } 762 763 psge = (void *)request + (karg.data_sge_offset*4); 764 765 /* send command to firmware */ 766 _ctl_display_some_debug(ioc, smid, "ctl_request", NULL); 767 768 init_completion(&ioc->ctl_cmds.done); 769 switch (mpi_request->Function) { 770 case MPI2_FUNCTION_NVME_ENCAPSULATED: 771 { 772 nvme_encap_request = (Mpi26NVMeEncapsulatedRequest_t *)request; 773 /* 774 * Get the Physical Address of the sense buffer. 775 * Use Error Response buffer address field to hold the sense 776 * buffer address. 777 * Clear the internal sense buffer, which will potentially hold 778 * the Completion Queue Entry on return, or 0 if no Entry. 779 * Build the PRPs and set direction bits. 780 * Send the request. 781 */ 782 nvme_encap_request->ErrorResponseBaseAddress = 783 cpu_to_le64(ioc->sense_dma & 0xFFFFFFFF00000000UL); 784 nvme_encap_request->ErrorResponseBaseAddress |= 785 cpu_to_le64(le32_to_cpu( 786 mpt3sas_base_get_sense_buffer_dma(ioc, smid))); 787 nvme_encap_request->ErrorResponseAllocationLength = 788 cpu_to_le16(NVME_ERROR_RESPONSE_SIZE); 789 memset(ioc->ctl_cmds.sense, 0, NVME_ERROR_RESPONSE_SIZE); 790 ioc->build_nvme_prp(ioc, smid, nvme_encap_request, 791 data_out_dma, data_out_sz, data_in_dma, data_in_sz); 792 if (test_bit(device_handle, ioc->device_remove_in_progress)) { 793 dtmprintk(ioc, 794 ioc_info(ioc, "handle(0x%04x): ioctl failed due to device removal in progress\n", 795 device_handle)); 796 mpt3sas_base_free_smid(ioc, smid); 797 ret = -EINVAL; 798 goto out; 799 } 800 mpt3sas_base_put_smid_nvme_encap(ioc, smid); 801 break; 802 } 803 case MPI2_FUNCTION_SCSI_IO_REQUEST: 804 case MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH: 805 { 806 Mpi2SCSIIORequest_t *scsiio_request = 807 (Mpi2SCSIIORequest_t *)request; 808 scsiio_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; 809 scsiio_request->SenseBufferLowAddress = 810 mpt3sas_base_get_sense_buffer_dma(ioc, smid); 811 memset(ioc->ctl_cmds.sense, 0, SCSI_SENSE_BUFFERSIZE); 812 if (test_bit(device_handle, ioc->device_remove_in_progress)) { 813 dtmprintk(ioc, 814 ioc_info(ioc, "handle(0x%04x) :ioctl failed due to device removal in progress\n", 815 device_handle)); 816 mpt3sas_base_free_smid(ioc, smid); 817 ret = -EINVAL; 818 goto out; 819 } 820 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, 821 data_in_dma, data_in_sz); 822 if (mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST) 823 ioc->put_smid_scsi_io(ioc, smid, device_handle); 824 else 825 mpt3sas_base_put_smid_default(ioc, smid); 826 break; 827 } 828 case MPI2_FUNCTION_SCSI_TASK_MGMT: 829 { 830 Mpi2SCSITaskManagementRequest_t *tm_request = 831 (Mpi2SCSITaskManagementRequest_t *)request; 832 833 dtmprintk(ioc, 834 ioc_info(ioc, "TASK_MGMT: handle(0x%04x), task_type(0x%02x)\n", 835 le16_to_cpu(tm_request->DevHandle), 836 tm_request->TaskType)); 837 ioc->got_task_abort_from_ioctl = 1; 838 if (tm_request->TaskType == 839 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK || 840 tm_request->TaskType == 841 MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK) { 842 if (_ctl_set_task_mid(ioc, &karg, tm_request)) { 843 mpt3sas_base_free_smid(ioc, smid); 844 ioc->got_task_abort_from_ioctl = 0; 845 goto out; 846 } 847 } 848 ioc->got_task_abort_from_ioctl = 0; 849 850 if (test_bit(device_handle, ioc->device_remove_in_progress)) { 851 dtmprintk(ioc, 852 ioc_info(ioc, "handle(0x%04x) :ioctl failed due to device removal in progress\n", 853 device_handle)); 854 mpt3sas_base_free_smid(ioc, smid); 855 ret = -EINVAL; 856 goto out; 857 } 858 mpt3sas_scsih_set_tm_flag(ioc, le16_to_cpu( 859 tm_request->DevHandle)); 860 ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz, 861 data_in_dma, data_in_sz); 862 mpt3sas_base_put_smid_hi_priority(ioc, smid, 0); 863 break; 864 } 865 case MPI2_FUNCTION_SMP_PASSTHROUGH: 866 { 867 Mpi2SmpPassthroughRequest_t *smp_request = 868 (Mpi2SmpPassthroughRequest_t *)mpi_request; 869 u8 *data; 870 871 /* ioc determines which port to use */ 872 smp_request->PhysicalPort = 0xFF; 873 if (smp_request->PassthroughFlags & 874 MPI2_SMP_PT_REQ_PT_FLAGS_IMMEDIATE) 875 data = (u8 *)&smp_request->SGL; 876 else { 877 if (unlikely(data_out == NULL)) { 878 pr_err("failure at %s:%d/%s()!\n", 879 __FILE__, __LINE__, __func__); 880 mpt3sas_base_free_smid(ioc, smid); 881 ret = -EINVAL; 882 goto out; 883 } 884 data = data_out; 885 } 886 887 if (data[1] == 0x91 && (data[10] == 1 || data[10] == 2)) { 888 ioc->ioc_link_reset_in_progress = 1; 889 ioc->ignore_loginfos = 1; 890 } 891 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma, 892 data_in_sz); 893 mpt3sas_base_put_smid_default(ioc, smid); 894 break; 895 } 896 case MPI2_FUNCTION_SATA_PASSTHROUGH: 897 { 898 if (test_bit(device_handle, ioc->device_remove_in_progress)) { 899 dtmprintk(ioc, 900 ioc_info(ioc, "handle(0x%04x) :ioctl failed due to device removal in progress\n", 901 device_handle)); 902 mpt3sas_base_free_smid(ioc, smid); 903 ret = -EINVAL; 904 goto out; 905 } 906 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma, 907 data_in_sz); 908 mpt3sas_base_put_smid_default(ioc, smid); 909 break; 910 } 911 case MPI2_FUNCTION_FW_DOWNLOAD: 912 case MPI2_FUNCTION_FW_UPLOAD: 913 { 914 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma, 915 data_in_sz); 916 mpt3sas_base_put_smid_default(ioc, smid); 917 break; 918 } 919 case MPI2_FUNCTION_TOOLBOX: 920 { 921 Mpi2ToolboxCleanRequest_t *toolbox_request = 922 (Mpi2ToolboxCleanRequest_t *)mpi_request; 923 924 if (toolbox_request->Tool == MPI2_TOOLBOX_DIAGNOSTIC_CLI_TOOL) { 925 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, 926 data_in_dma, data_in_sz); 927 } else { 928 ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz, 929 data_in_dma, data_in_sz); 930 } 931 mpt3sas_base_put_smid_default(ioc, smid); 932 break; 933 } 934 case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL: 935 { 936 Mpi2SasIoUnitControlRequest_t *sasiounit_request = 937 (Mpi2SasIoUnitControlRequest_t *)mpi_request; 938 939 if (sasiounit_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET 940 || sasiounit_request->Operation == 941 MPI2_SAS_OP_PHY_LINK_RESET) { 942 ioc->ioc_link_reset_in_progress = 1; 943 ioc->ignore_loginfos = 1; 944 } 945 /* drop to default case for posting the request */ 946 } 947 /* fall through */ 948 default: 949 ioc->build_sg_mpi(ioc, psge, data_out_dma, data_out_sz, 950 data_in_dma, data_in_sz); 951 mpt3sas_base_put_smid_default(ioc, smid); 952 break; 953 } 954 955 if (karg.timeout < MPT3_IOCTL_DEFAULT_TIMEOUT) 956 timeout = MPT3_IOCTL_DEFAULT_TIMEOUT; 957 else 958 timeout = karg.timeout; 959 wait_for_completion_timeout(&ioc->ctl_cmds.done, timeout*HZ); 960 if (mpi_request->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) { 961 Mpi2SCSITaskManagementRequest_t *tm_request = 962 (Mpi2SCSITaskManagementRequest_t *)mpi_request; 963 mpt3sas_scsih_clear_tm_flag(ioc, le16_to_cpu( 964 tm_request->DevHandle)); 965 mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT); 966 } else if ((mpi_request->Function == MPI2_FUNCTION_SMP_PASSTHROUGH || 967 mpi_request->Function == MPI2_FUNCTION_SAS_IO_UNIT_CONTROL) && 968 ioc->ioc_link_reset_in_progress) { 969 ioc->ioc_link_reset_in_progress = 0; 970 ioc->ignore_loginfos = 0; 971 } 972 if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) { 973 issue_reset = 974 mpt3sas_base_check_cmd_timeout(ioc, 975 ioc->ctl_cmds.status, mpi_request, 976 karg.data_sge_offset); 977 goto issue_host_reset; 978 } 979 980 mpi_reply = ioc->ctl_cmds.reply; 981 982 if (mpi_reply->Function == MPI2_FUNCTION_SCSI_TASK_MGMT && 983 (ioc->logging_level & MPT_DEBUG_TM)) { 984 Mpi2SCSITaskManagementReply_t *tm_reply = 985 (Mpi2SCSITaskManagementReply_t *)mpi_reply; 986 987 ioc_info(ioc, "TASK_MGMT: IOCStatus(0x%04x), IOCLogInfo(0x%08x), TerminationCount(0x%08x)\n", 988 le16_to_cpu(tm_reply->IOCStatus), 989 le32_to_cpu(tm_reply->IOCLogInfo), 990 le32_to_cpu(tm_reply->TerminationCount)); 991 } 992 993 /* copy out xdata to user */ 994 if (data_in_sz) { 995 if (copy_to_user(karg.data_in_buf_ptr, data_in, 996 data_in_sz)) { 997 pr_err("failure at %s:%d/%s()!\n", __FILE__, 998 __LINE__, __func__); 999 ret = -ENODATA; 1000 goto out; 1001 } 1002 } 1003 1004 /* copy out reply message frame to user */ 1005 if (karg.max_reply_bytes) { 1006 sz = min_t(u32, karg.max_reply_bytes, ioc->reply_sz); 1007 if (copy_to_user(karg.reply_frame_buf_ptr, ioc->ctl_cmds.reply, 1008 sz)) { 1009 pr_err("failure at %s:%d/%s()!\n", __FILE__, 1010 __LINE__, __func__); 1011 ret = -ENODATA; 1012 goto out; 1013 } 1014 } 1015 1016 /* copy out sense/NVMe Error Response to user */ 1017 if (karg.max_sense_bytes && (mpi_request->Function == 1018 MPI2_FUNCTION_SCSI_IO_REQUEST || mpi_request->Function == 1019 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH || mpi_request->Function == 1020 MPI2_FUNCTION_NVME_ENCAPSULATED)) { 1021 if (karg.sense_data_ptr == NULL) { 1022 ioc_info(ioc, "Response buffer provided by application is NULL; Response data will not be returned\n"); 1023 goto out; 1024 } 1025 sz_arg = (mpi_request->Function == 1026 MPI2_FUNCTION_NVME_ENCAPSULATED) ? NVME_ERROR_RESPONSE_SIZE : 1027 SCSI_SENSE_BUFFERSIZE; 1028 sz = min_t(u32, karg.max_sense_bytes, sz_arg); 1029 if (copy_to_user(karg.sense_data_ptr, ioc->ctl_cmds.sense, 1030 sz)) { 1031 pr_err("failure at %s:%d/%s()!\n", __FILE__, 1032 __LINE__, __func__); 1033 ret = -ENODATA; 1034 goto out; 1035 } 1036 } 1037 1038 issue_host_reset: 1039 if (issue_reset) { 1040 ret = -ENODATA; 1041 if ((mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST || 1042 mpi_request->Function == 1043 MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH || 1044 mpi_request->Function == MPI2_FUNCTION_SATA_PASSTHROUGH)) { 1045 ioc_info(ioc, "issue target reset: handle = (0x%04x)\n", 1046 le16_to_cpu(mpi_request->FunctionDependent1)); 1047 mpt3sas_halt_firmware(ioc); 1048 pcie_device = mpt3sas_get_pdev_by_handle(ioc, 1049 le16_to_cpu(mpi_request->FunctionDependent1)); 1050 if (pcie_device && (!ioc->tm_custom_handling)) 1051 mpt3sas_scsih_issue_locked_tm(ioc, 1052 le16_to_cpu(mpi_request->FunctionDependent1), 1053 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 1054 0, pcie_device->reset_timeout, 1055 tr_method); 1056 else 1057 mpt3sas_scsih_issue_locked_tm(ioc, 1058 le16_to_cpu(mpi_request->FunctionDependent1), 1059 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0, 1060 0, 30, MPI2_SCSITASKMGMT_MSGFLAGS_LINK_RESET); 1061 } else 1062 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); 1063 } 1064 1065 out: 1066 if (pcie_device) 1067 pcie_device_put(pcie_device); 1068 1069 /* free memory associated with sg buffers */ 1070 if (data_in) 1071 dma_free_coherent(&ioc->pdev->dev, data_in_sz, data_in, 1072 data_in_dma); 1073 1074 if (data_out) 1075 dma_free_coherent(&ioc->pdev->dev, data_out_sz, data_out, 1076 data_out_dma); 1077 1078 kfree(mpi_request); 1079 ioc->ctl_cmds.status = MPT3_CMD_NOT_USED; 1080 return ret; 1081 } 1082 1083 /** 1084 * _ctl_getiocinfo - main handler for MPT3IOCINFO opcode 1085 * @ioc: per adapter object 1086 * @arg: user space buffer containing ioctl content 1087 */ 1088 static long 1089 _ctl_getiocinfo(struct MPT3SAS_ADAPTER *ioc, void __user *arg) 1090 { 1091 struct mpt3_ioctl_iocinfo karg; 1092 1093 dctlprintk(ioc, ioc_info(ioc, "%s: enter\n", 1094 __func__)); 1095 1096 memset(&karg, 0 , sizeof(karg)); 1097 if (ioc->pfacts) 1098 karg.port_number = ioc->pfacts[0].PortNumber; 1099 karg.hw_rev = ioc->pdev->revision; 1100 karg.pci_id = ioc->pdev->device; 1101 karg.subsystem_device = ioc->pdev->subsystem_device; 1102 karg.subsystem_vendor = ioc->pdev->subsystem_vendor; 1103 karg.pci_information.u.bits.bus = ioc->pdev->bus->number; 1104 karg.pci_information.u.bits.device = PCI_SLOT(ioc->pdev->devfn); 1105 karg.pci_information.u.bits.function = PCI_FUNC(ioc->pdev->devfn); 1106 karg.pci_information.segment_id = pci_domain_nr(ioc->pdev->bus); 1107 karg.firmware_version = ioc->facts.FWVersion.Word; 1108 strcpy(karg.driver_version, ioc->driver_name); 1109 strcat(karg.driver_version, "-"); 1110 switch (ioc->hba_mpi_version_belonged) { 1111 case MPI2_VERSION: 1112 if (ioc->is_warpdrive) 1113 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2_SSS6200; 1114 else 1115 karg.adapter_type = MPT2_IOCTL_INTERFACE_SAS2; 1116 strcat(karg.driver_version, MPT2SAS_DRIVER_VERSION); 1117 break; 1118 case MPI25_VERSION: 1119 case MPI26_VERSION: 1120 if (ioc->is_gen35_ioc) 1121 karg.adapter_type = MPT3_IOCTL_INTERFACE_SAS35; 1122 else 1123 karg.adapter_type = MPT3_IOCTL_INTERFACE_SAS3; 1124 strcat(karg.driver_version, MPT3SAS_DRIVER_VERSION); 1125 break; 1126 } 1127 karg.bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion); 1128 1129 if (copy_to_user(arg, &karg, sizeof(karg))) { 1130 pr_err("failure at %s:%d/%s()!\n", 1131 __FILE__, __LINE__, __func__); 1132 return -EFAULT; 1133 } 1134 return 0; 1135 } 1136 1137 /** 1138 * _ctl_eventquery - main handler for MPT3EVENTQUERY opcode 1139 * @ioc: per adapter object 1140 * @arg: user space buffer containing ioctl content 1141 */ 1142 static long 1143 _ctl_eventquery(struct MPT3SAS_ADAPTER *ioc, void __user *arg) 1144 { 1145 struct mpt3_ioctl_eventquery karg; 1146 1147 if (copy_from_user(&karg, arg, sizeof(karg))) { 1148 pr_err("failure at %s:%d/%s()!\n", 1149 __FILE__, __LINE__, __func__); 1150 return -EFAULT; 1151 } 1152 1153 dctlprintk(ioc, ioc_info(ioc, "%s: enter\n", 1154 __func__)); 1155 1156 karg.event_entries = MPT3SAS_CTL_EVENT_LOG_SIZE; 1157 memcpy(karg.event_types, ioc->event_type, 1158 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32)); 1159 1160 if (copy_to_user(arg, &karg, sizeof(karg))) { 1161 pr_err("failure at %s:%d/%s()!\n", 1162 __FILE__, __LINE__, __func__); 1163 return -EFAULT; 1164 } 1165 return 0; 1166 } 1167 1168 /** 1169 * _ctl_eventenable - main handler for MPT3EVENTENABLE opcode 1170 * @ioc: per adapter object 1171 * @arg: user space buffer containing ioctl content 1172 */ 1173 static long 1174 _ctl_eventenable(struct MPT3SAS_ADAPTER *ioc, void __user *arg) 1175 { 1176 struct mpt3_ioctl_eventenable karg; 1177 1178 if (copy_from_user(&karg, arg, sizeof(karg))) { 1179 pr_err("failure at %s:%d/%s()!\n", 1180 __FILE__, __LINE__, __func__); 1181 return -EFAULT; 1182 } 1183 1184 dctlprintk(ioc, ioc_info(ioc, "%s: enter\n", 1185 __func__)); 1186 1187 memcpy(ioc->event_type, karg.event_types, 1188 MPI2_EVENT_NOTIFY_EVENTMASK_WORDS * sizeof(u32)); 1189 mpt3sas_base_validate_event_type(ioc, ioc->event_type); 1190 1191 if (ioc->event_log) 1192 return 0; 1193 /* initialize event_log */ 1194 ioc->event_context = 0; 1195 ioc->aen_event_read_flag = 0; 1196 ioc->event_log = kcalloc(MPT3SAS_CTL_EVENT_LOG_SIZE, 1197 sizeof(struct MPT3_IOCTL_EVENTS), GFP_KERNEL); 1198 if (!ioc->event_log) { 1199 pr_err("failure at %s:%d/%s()!\n", 1200 __FILE__, __LINE__, __func__); 1201 return -ENOMEM; 1202 } 1203 return 0; 1204 } 1205 1206 /** 1207 * _ctl_eventreport - main handler for MPT3EVENTREPORT opcode 1208 * @ioc: per adapter object 1209 * @arg: user space buffer containing ioctl content 1210 */ 1211 static long 1212 _ctl_eventreport(struct MPT3SAS_ADAPTER *ioc, void __user *arg) 1213 { 1214 struct mpt3_ioctl_eventreport karg; 1215 u32 number_bytes, max_events, max; 1216 struct mpt3_ioctl_eventreport __user *uarg = arg; 1217 1218 if (copy_from_user(&karg, arg, sizeof(karg))) { 1219 pr_err("failure at %s:%d/%s()!\n", 1220 __FILE__, __LINE__, __func__); 1221 return -EFAULT; 1222 } 1223 1224 dctlprintk(ioc, ioc_info(ioc, "%s: enter\n", 1225 __func__)); 1226 1227 number_bytes = karg.hdr.max_data_size - 1228 sizeof(struct mpt3_ioctl_header); 1229 max_events = number_bytes/sizeof(struct MPT3_IOCTL_EVENTS); 1230 max = min_t(u32, MPT3SAS_CTL_EVENT_LOG_SIZE, max_events); 1231 1232 /* If fewer than 1 event is requested, there must have 1233 * been some type of error. 1234 */ 1235 if (!max || !ioc->event_log) 1236 return -ENODATA; 1237 1238 number_bytes = max * sizeof(struct MPT3_IOCTL_EVENTS); 1239 if (copy_to_user(uarg->event_data, ioc->event_log, number_bytes)) { 1240 pr_err("failure at %s:%d/%s()!\n", 1241 __FILE__, __LINE__, __func__); 1242 return -EFAULT; 1243 } 1244 1245 /* reset flag so SIGIO can restart */ 1246 ioc->aen_event_read_flag = 0; 1247 return 0; 1248 } 1249 1250 /** 1251 * _ctl_do_reset - main handler for MPT3HARDRESET opcode 1252 * @ioc: per adapter object 1253 * @arg: user space buffer containing ioctl content 1254 */ 1255 static long 1256 _ctl_do_reset(struct MPT3SAS_ADAPTER *ioc, void __user *arg) 1257 { 1258 struct mpt3_ioctl_diag_reset karg; 1259 int retval; 1260 1261 if (copy_from_user(&karg, arg, sizeof(karg))) { 1262 pr_err("failure at %s:%d/%s()!\n", 1263 __FILE__, __LINE__, __func__); 1264 return -EFAULT; 1265 } 1266 1267 if (ioc->shost_recovery || ioc->pci_error_recovery || 1268 ioc->is_driver_loading) 1269 return -EAGAIN; 1270 1271 dctlprintk(ioc, ioc_info(ioc, "%s: enter\n", 1272 __func__)); 1273 1274 retval = mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); 1275 ioc_info(ioc, "host reset: %s\n", ((!retval) ? "SUCCESS" : "FAILED")); 1276 return 0; 1277 } 1278 1279 /** 1280 * _ctl_btdh_search_sas_device - searching for sas device 1281 * @ioc: per adapter object 1282 * @btdh: btdh ioctl payload 1283 */ 1284 static int 1285 _ctl_btdh_search_sas_device(struct MPT3SAS_ADAPTER *ioc, 1286 struct mpt3_ioctl_btdh_mapping *btdh) 1287 { 1288 struct _sas_device *sas_device; 1289 unsigned long flags; 1290 int rc = 0; 1291 1292 if (list_empty(&ioc->sas_device_list)) 1293 return rc; 1294 1295 spin_lock_irqsave(&ioc->sas_device_lock, flags); 1296 list_for_each_entry(sas_device, &ioc->sas_device_list, list) { 1297 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF && 1298 btdh->handle == sas_device->handle) { 1299 btdh->bus = sas_device->channel; 1300 btdh->id = sas_device->id; 1301 rc = 1; 1302 goto out; 1303 } else if (btdh->bus == sas_device->channel && btdh->id == 1304 sas_device->id && btdh->handle == 0xFFFF) { 1305 btdh->handle = sas_device->handle; 1306 rc = 1; 1307 goto out; 1308 } 1309 } 1310 out: 1311 spin_unlock_irqrestore(&ioc->sas_device_lock, flags); 1312 return rc; 1313 } 1314 1315 /** 1316 * _ctl_btdh_search_pcie_device - searching for pcie device 1317 * @ioc: per adapter object 1318 * @btdh: btdh ioctl payload 1319 */ 1320 static int 1321 _ctl_btdh_search_pcie_device(struct MPT3SAS_ADAPTER *ioc, 1322 struct mpt3_ioctl_btdh_mapping *btdh) 1323 { 1324 struct _pcie_device *pcie_device; 1325 unsigned long flags; 1326 int rc = 0; 1327 1328 if (list_empty(&ioc->pcie_device_list)) 1329 return rc; 1330 1331 spin_lock_irqsave(&ioc->pcie_device_lock, flags); 1332 list_for_each_entry(pcie_device, &ioc->pcie_device_list, list) { 1333 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF && 1334 btdh->handle == pcie_device->handle) { 1335 btdh->bus = pcie_device->channel; 1336 btdh->id = pcie_device->id; 1337 rc = 1; 1338 goto out; 1339 } else if (btdh->bus == pcie_device->channel && btdh->id == 1340 pcie_device->id && btdh->handle == 0xFFFF) { 1341 btdh->handle = pcie_device->handle; 1342 rc = 1; 1343 goto out; 1344 } 1345 } 1346 out: 1347 spin_unlock_irqrestore(&ioc->pcie_device_lock, flags); 1348 return rc; 1349 } 1350 1351 /** 1352 * _ctl_btdh_search_raid_device - searching for raid device 1353 * @ioc: per adapter object 1354 * @btdh: btdh ioctl payload 1355 */ 1356 static int 1357 _ctl_btdh_search_raid_device(struct MPT3SAS_ADAPTER *ioc, 1358 struct mpt3_ioctl_btdh_mapping *btdh) 1359 { 1360 struct _raid_device *raid_device; 1361 unsigned long flags; 1362 int rc = 0; 1363 1364 if (list_empty(&ioc->raid_device_list)) 1365 return rc; 1366 1367 spin_lock_irqsave(&ioc->raid_device_lock, flags); 1368 list_for_each_entry(raid_device, &ioc->raid_device_list, list) { 1369 if (btdh->bus == 0xFFFFFFFF && btdh->id == 0xFFFFFFFF && 1370 btdh->handle == raid_device->handle) { 1371 btdh->bus = raid_device->channel; 1372 btdh->id = raid_device->id; 1373 rc = 1; 1374 goto out; 1375 } else if (btdh->bus == raid_device->channel && btdh->id == 1376 raid_device->id && btdh->handle == 0xFFFF) { 1377 btdh->handle = raid_device->handle; 1378 rc = 1; 1379 goto out; 1380 } 1381 } 1382 out: 1383 spin_unlock_irqrestore(&ioc->raid_device_lock, flags); 1384 return rc; 1385 } 1386 1387 /** 1388 * _ctl_btdh_mapping - main handler for MPT3BTDHMAPPING opcode 1389 * @ioc: per adapter object 1390 * @arg: user space buffer containing ioctl content 1391 */ 1392 static long 1393 _ctl_btdh_mapping(struct MPT3SAS_ADAPTER *ioc, void __user *arg) 1394 { 1395 struct mpt3_ioctl_btdh_mapping karg; 1396 int rc; 1397 1398 if (copy_from_user(&karg, arg, sizeof(karg))) { 1399 pr_err("failure at %s:%d/%s()!\n", 1400 __FILE__, __LINE__, __func__); 1401 return -EFAULT; 1402 } 1403 1404 dctlprintk(ioc, ioc_info(ioc, "%s\n", 1405 __func__)); 1406 1407 rc = _ctl_btdh_search_sas_device(ioc, &karg); 1408 if (!rc) 1409 rc = _ctl_btdh_search_pcie_device(ioc, &karg); 1410 if (!rc) 1411 _ctl_btdh_search_raid_device(ioc, &karg); 1412 1413 if (copy_to_user(arg, &karg, sizeof(karg))) { 1414 pr_err("failure at %s:%d/%s()!\n", 1415 __FILE__, __LINE__, __func__); 1416 return -EFAULT; 1417 } 1418 return 0; 1419 } 1420 1421 /** 1422 * _ctl_diag_capability - return diag buffer capability 1423 * @ioc: per adapter object 1424 * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED 1425 * 1426 * returns 1 when diag buffer support is enabled in firmware 1427 */ 1428 static u8 1429 _ctl_diag_capability(struct MPT3SAS_ADAPTER *ioc, u8 buffer_type) 1430 { 1431 u8 rc = 0; 1432 1433 switch (buffer_type) { 1434 case MPI2_DIAG_BUF_TYPE_TRACE: 1435 if (ioc->facts.IOCCapabilities & 1436 MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) 1437 rc = 1; 1438 break; 1439 case MPI2_DIAG_BUF_TYPE_SNAPSHOT: 1440 if (ioc->facts.IOCCapabilities & 1441 MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) 1442 rc = 1; 1443 break; 1444 case MPI2_DIAG_BUF_TYPE_EXTENDED: 1445 if (ioc->facts.IOCCapabilities & 1446 MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) 1447 rc = 1; 1448 } 1449 1450 return rc; 1451 } 1452 1453 1454 /** 1455 * _ctl_diag_register_2 - wrapper for registering diag buffer support 1456 * @ioc: per adapter object 1457 * @diag_register: the diag_register struct passed in from user space 1458 * 1459 */ 1460 static long 1461 _ctl_diag_register_2(struct MPT3SAS_ADAPTER *ioc, 1462 struct mpt3_diag_register *diag_register) 1463 { 1464 int rc, i; 1465 void *request_data = NULL; 1466 dma_addr_t request_data_dma; 1467 u32 request_data_sz = 0; 1468 Mpi2DiagBufferPostRequest_t *mpi_request; 1469 Mpi2DiagBufferPostReply_t *mpi_reply; 1470 u8 buffer_type; 1471 u16 smid; 1472 u16 ioc_status; 1473 u32 ioc_state; 1474 u8 issue_reset = 0; 1475 1476 dctlprintk(ioc, ioc_info(ioc, "%s\n", 1477 __func__)); 1478 1479 ioc_state = mpt3sas_base_get_iocstate(ioc, 1); 1480 if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) { 1481 ioc_err(ioc, "%s: failed due to ioc not operational\n", 1482 __func__); 1483 rc = -EAGAIN; 1484 goto out; 1485 } 1486 1487 if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) { 1488 ioc_err(ioc, "%s: ctl_cmd in use\n", __func__); 1489 rc = -EAGAIN; 1490 goto out; 1491 } 1492 1493 buffer_type = diag_register->buffer_type; 1494 if (!_ctl_diag_capability(ioc, buffer_type)) { 1495 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n", 1496 __func__, buffer_type); 1497 return -EPERM; 1498 } 1499 1500 if (ioc->diag_buffer_status[buffer_type] & 1501 MPT3_DIAG_BUFFER_IS_REGISTERED) { 1502 ioc_err(ioc, "%s: already has a registered buffer for buffer_type(0x%02x)\n", 1503 __func__, buffer_type); 1504 return -EINVAL; 1505 } 1506 1507 if (diag_register->requested_buffer_size % 4) { 1508 ioc_err(ioc, "%s: the requested_buffer_size is not 4 byte aligned\n", 1509 __func__); 1510 return -EINVAL; 1511 } 1512 1513 smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx); 1514 if (!smid) { 1515 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__); 1516 rc = -EAGAIN; 1517 goto out; 1518 } 1519 1520 rc = 0; 1521 ioc->ctl_cmds.status = MPT3_CMD_PENDING; 1522 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz); 1523 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); 1524 ioc->ctl_cmds.smid = smid; 1525 1526 request_data = ioc->diag_buffer[buffer_type]; 1527 request_data_sz = diag_register->requested_buffer_size; 1528 ioc->unique_id[buffer_type] = diag_register->unique_id; 1529 ioc->diag_buffer_status[buffer_type] = 0; 1530 memcpy(ioc->product_specific[buffer_type], 1531 diag_register->product_specific, MPT3_PRODUCT_SPECIFIC_DWORDS); 1532 ioc->diagnostic_flags[buffer_type] = diag_register->diagnostic_flags; 1533 1534 if (request_data) { 1535 request_data_dma = ioc->diag_buffer_dma[buffer_type]; 1536 if (request_data_sz != ioc->diag_buffer_sz[buffer_type]) { 1537 dma_free_coherent(&ioc->pdev->dev, 1538 ioc->diag_buffer_sz[buffer_type], 1539 request_data, request_data_dma); 1540 request_data = NULL; 1541 } 1542 } 1543 1544 if (request_data == NULL) { 1545 ioc->diag_buffer_sz[buffer_type] = 0; 1546 ioc->diag_buffer_dma[buffer_type] = 0; 1547 request_data = dma_alloc_coherent(&ioc->pdev->dev, 1548 request_data_sz, &request_data_dma, GFP_KERNEL); 1549 if (request_data == NULL) { 1550 ioc_err(ioc, "%s: failed allocating memory for diag buffers, requested size(%d)\n", 1551 __func__, request_data_sz); 1552 mpt3sas_base_free_smid(ioc, smid); 1553 return -ENOMEM; 1554 } 1555 ioc->diag_buffer[buffer_type] = request_data; 1556 ioc->diag_buffer_sz[buffer_type] = request_data_sz; 1557 ioc->diag_buffer_dma[buffer_type] = request_data_dma; 1558 } 1559 1560 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST; 1561 mpi_request->BufferType = diag_register->buffer_type; 1562 mpi_request->Flags = cpu_to_le32(diag_register->diagnostic_flags); 1563 mpi_request->BufferAddress = cpu_to_le64(request_data_dma); 1564 mpi_request->BufferLength = cpu_to_le32(request_data_sz); 1565 mpi_request->VF_ID = 0; /* TODO */ 1566 mpi_request->VP_ID = 0; 1567 1568 dctlprintk(ioc, 1569 ioc_info(ioc, "%s: diag_buffer(0x%p), dma(0x%llx), sz(%d)\n", 1570 __func__, request_data, 1571 (unsigned long long)request_data_dma, 1572 le32_to_cpu(mpi_request->BufferLength))); 1573 1574 for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++) 1575 mpi_request->ProductSpecific[i] = 1576 cpu_to_le32(ioc->product_specific[buffer_type][i]); 1577 1578 init_completion(&ioc->ctl_cmds.done); 1579 mpt3sas_base_put_smid_default(ioc, smid); 1580 wait_for_completion_timeout(&ioc->ctl_cmds.done, 1581 MPT3_IOCTL_DEFAULT_TIMEOUT*HZ); 1582 1583 if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) { 1584 issue_reset = 1585 mpt3sas_base_check_cmd_timeout(ioc, 1586 ioc->ctl_cmds.status, mpi_request, 1587 sizeof(Mpi2DiagBufferPostRequest_t)/4); 1588 goto issue_host_reset; 1589 } 1590 1591 /* process the completed Reply Message Frame */ 1592 if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) { 1593 ioc_err(ioc, "%s: no reply message\n", __func__); 1594 rc = -EFAULT; 1595 goto out; 1596 } 1597 1598 mpi_reply = ioc->ctl_cmds.reply; 1599 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK; 1600 1601 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) { 1602 ioc->diag_buffer_status[buffer_type] |= 1603 MPT3_DIAG_BUFFER_IS_REGISTERED; 1604 dctlprintk(ioc, ioc_info(ioc, "%s: success\n", __func__)); 1605 } else { 1606 ioc_info(ioc, "%s: ioc_status(0x%04x) log_info(0x%08x)\n", 1607 __func__, 1608 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo)); 1609 rc = -EFAULT; 1610 } 1611 1612 issue_host_reset: 1613 if (issue_reset) 1614 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); 1615 1616 out: 1617 1618 if (rc && request_data) 1619 dma_free_coherent(&ioc->pdev->dev, request_data_sz, 1620 request_data, request_data_dma); 1621 1622 ioc->ctl_cmds.status = MPT3_CMD_NOT_USED; 1623 return rc; 1624 } 1625 1626 /** 1627 * mpt3sas_enable_diag_buffer - enabling diag_buffers support driver load time 1628 * @ioc: per adapter object 1629 * @bits_to_register: bitwise field where trace is bit 0, and snapshot is bit 1 1630 * 1631 * This is called when command line option diag_buffer_enable is enabled 1632 * at driver load time. 1633 */ 1634 void 1635 mpt3sas_enable_diag_buffer(struct MPT3SAS_ADAPTER *ioc, u8 bits_to_register) 1636 { 1637 struct mpt3_diag_register diag_register; 1638 1639 memset(&diag_register, 0, sizeof(struct mpt3_diag_register)); 1640 1641 if (bits_to_register & 1) { 1642 ioc_info(ioc, "registering trace buffer support\n"); 1643 ioc->diag_trigger_master.MasterData = 1644 (MASTER_TRIGGER_FW_FAULT + MASTER_TRIGGER_ADAPTER_RESET); 1645 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE; 1646 /* register for 2MB buffers */ 1647 diag_register.requested_buffer_size = 2 * (1024 * 1024); 1648 diag_register.unique_id = 0x7075900; 1649 _ctl_diag_register_2(ioc, &diag_register); 1650 } 1651 1652 if (bits_to_register & 2) { 1653 ioc_info(ioc, "registering snapshot buffer support\n"); 1654 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_SNAPSHOT; 1655 /* register for 2MB buffers */ 1656 diag_register.requested_buffer_size = 2 * (1024 * 1024); 1657 diag_register.unique_id = 0x7075901; 1658 _ctl_diag_register_2(ioc, &diag_register); 1659 } 1660 1661 if (bits_to_register & 4) { 1662 ioc_info(ioc, "registering extended buffer support\n"); 1663 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_EXTENDED; 1664 /* register for 2MB buffers */ 1665 diag_register.requested_buffer_size = 2 * (1024 * 1024); 1666 diag_register.unique_id = 0x7075901; 1667 _ctl_diag_register_2(ioc, &diag_register); 1668 } 1669 } 1670 1671 /** 1672 * _ctl_diag_register - application register with driver 1673 * @ioc: per adapter object 1674 * @arg: user space buffer containing ioctl content 1675 * 1676 * This will allow the driver to setup any required buffers that will be 1677 * needed by firmware to communicate with the driver. 1678 */ 1679 static long 1680 _ctl_diag_register(struct MPT3SAS_ADAPTER *ioc, void __user *arg) 1681 { 1682 struct mpt3_diag_register karg; 1683 long rc; 1684 1685 if (copy_from_user(&karg, arg, sizeof(karg))) { 1686 pr_err("failure at %s:%d/%s()!\n", 1687 __FILE__, __LINE__, __func__); 1688 return -EFAULT; 1689 } 1690 1691 rc = _ctl_diag_register_2(ioc, &karg); 1692 return rc; 1693 } 1694 1695 /** 1696 * _ctl_diag_unregister - application unregister with driver 1697 * @ioc: per adapter object 1698 * @arg: user space buffer containing ioctl content 1699 * 1700 * This will allow the driver to cleanup any memory allocated for diag 1701 * messages and to free up any resources. 1702 */ 1703 static long 1704 _ctl_diag_unregister(struct MPT3SAS_ADAPTER *ioc, void __user *arg) 1705 { 1706 struct mpt3_diag_unregister karg; 1707 void *request_data; 1708 dma_addr_t request_data_dma; 1709 u32 request_data_sz; 1710 u8 buffer_type; 1711 1712 if (copy_from_user(&karg, arg, sizeof(karg))) { 1713 pr_err("failure at %s:%d/%s()!\n", 1714 __FILE__, __LINE__, __func__); 1715 return -EFAULT; 1716 } 1717 1718 dctlprintk(ioc, ioc_info(ioc, "%s\n", 1719 __func__)); 1720 1721 buffer_type = karg.unique_id & 0x000000ff; 1722 if (!_ctl_diag_capability(ioc, buffer_type)) { 1723 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n", 1724 __func__, buffer_type); 1725 return -EPERM; 1726 } 1727 1728 if ((ioc->diag_buffer_status[buffer_type] & 1729 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) { 1730 ioc_err(ioc, "%s: buffer_type(0x%02x) is not registered\n", 1731 __func__, buffer_type); 1732 return -EINVAL; 1733 } 1734 if ((ioc->diag_buffer_status[buffer_type] & 1735 MPT3_DIAG_BUFFER_IS_RELEASED) == 0) { 1736 ioc_err(ioc, "%s: buffer_type(0x%02x) has not been released\n", 1737 __func__, buffer_type); 1738 return -EINVAL; 1739 } 1740 1741 if (karg.unique_id != ioc->unique_id[buffer_type]) { 1742 ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n", 1743 __func__, karg.unique_id); 1744 return -EINVAL; 1745 } 1746 1747 request_data = ioc->diag_buffer[buffer_type]; 1748 if (!request_data) { 1749 ioc_err(ioc, "%s: doesn't have memory allocated for buffer_type(0x%02x)\n", 1750 __func__, buffer_type); 1751 return -ENOMEM; 1752 } 1753 1754 request_data_sz = ioc->diag_buffer_sz[buffer_type]; 1755 request_data_dma = ioc->diag_buffer_dma[buffer_type]; 1756 dma_free_coherent(&ioc->pdev->dev, request_data_sz, 1757 request_data, request_data_dma); 1758 ioc->diag_buffer[buffer_type] = NULL; 1759 ioc->diag_buffer_status[buffer_type] = 0; 1760 return 0; 1761 } 1762 1763 /** 1764 * _ctl_diag_query - query relevant info associated with diag buffers 1765 * @ioc: per adapter object 1766 * @arg: user space buffer containing ioctl content 1767 * 1768 * The application will send only buffer_type and unique_id. Driver will 1769 * inspect unique_id first, if valid, fill in all the info. If unique_id is 1770 * 0x00, the driver will return info specified by Buffer Type. 1771 */ 1772 static long 1773 _ctl_diag_query(struct MPT3SAS_ADAPTER *ioc, void __user *arg) 1774 { 1775 struct mpt3_diag_query karg; 1776 void *request_data; 1777 int i; 1778 u8 buffer_type; 1779 1780 if (copy_from_user(&karg, arg, sizeof(karg))) { 1781 pr_err("failure at %s:%d/%s()!\n", 1782 __FILE__, __LINE__, __func__); 1783 return -EFAULT; 1784 } 1785 1786 dctlprintk(ioc, ioc_info(ioc, "%s\n", 1787 __func__)); 1788 1789 karg.application_flags = 0; 1790 buffer_type = karg.buffer_type; 1791 1792 if (!_ctl_diag_capability(ioc, buffer_type)) { 1793 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n", 1794 __func__, buffer_type); 1795 return -EPERM; 1796 } 1797 1798 if ((ioc->diag_buffer_status[buffer_type] & 1799 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) { 1800 ioc_err(ioc, "%s: buffer_type(0x%02x) is not registered\n", 1801 __func__, buffer_type); 1802 return -EINVAL; 1803 } 1804 1805 if (karg.unique_id & 0xffffff00) { 1806 if (karg.unique_id != ioc->unique_id[buffer_type]) { 1807 ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n", 1808 __func__, karg.unique_id); 1809 return -EINVAL; 1810 } 1811 } 1812 1813 request_data = ioc->diag_buffer[buffer_type]; 1814 if (!request_data) { 1815 ioc_err(ioc, "%s: doesn't have buffer for buffer_type(0x%02x)\n", 1816 __func__, buffer_type); 1817 return -ENOMEM; 1818 } 1819 1820 if (ioc->diag_buffer_status[buffer_type] & MPT3_DIAG_BUFFER_IS_RELEASED) 1821 karg.application_flags = (MPT3_APP_FLAGS_APP_OWNED | 1822 MPT3_APP_FLAGS_BUFFER_VALID); 1823 else 1824 karg.application_flags = (MPT3_APP_FLAGS_APP_OWNED | 1825 MPT3_APP_FLAGS_BUFFER_VALID | 1826 MPT3_APP_FLAGS_FW_BUFFER_ACCESS); 1827 1828 for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++) 1829 karg.product_specific[i] = 1830 ioc->product_specific[buffer_type][i]; 1831 1832 karg.total_buffer_size = ioc->diag_buffer_sz[buffer_type]; 1833 karg.driver_added_buffer_size = 0; 1834 karg.unique_id = ioc->unique_id[buffer_type]; 1835 karg.diagnostic_flags = ioc->diagnostic_flags[buffer_type]; 1836 1837 if (copy_to_user(arg, &karg, sizeof(struct mpt3_diag_query))) { 1838 ioc_err(ioc, "%s: unable to write mpt3_diag_query data @ %p\n", 1839 __func__, arg); 1840 return -EFAULT; 1841 } 1842 return 0; 1843 } 1844 1845 /** 1846 * mpt3sas_send_diag_release - Diag Release Message 1847 * @ioc: per adapter object 1848 * @buffer_type: specifies either TRACE, SNAPSHOT, or EXTENDED 1849 * @issue_reset: specifies whether host reset is required. 1850 * 1851 */ 1852 int 1853 mpt3sas_send_diag_release(struct MPT3SAS_ADAPTER *ioc, u8 buffer_type, 1854 u8 *issue_reset) 1855 { 1856 Mpi2DiagReleaseRequest_t *mpi_request; 1857 Mpi2DiagReleaseReply_t *mpi_reply; 1858 u16 smid; 1859 u16 ioc_status; 1860 u32 ioc_state; 1861 int rc; 1862 1863 dctlprintk(ioc, ioc_info(ioc, "%s\n", 1864 __func__)); 1865 1866 rc = 0; 1867 *issue_reset = 0; 1868 1869 ioc_state = mpt3sas_base_get_iocstate(ioc, 1); 1870 if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) { 1871 if (ioc->diag_buffer_status[buffer_type] & 1872 MPT3_DIAG_BUFFER_IS_REGISTERED) 1873 ioc->diag_buffer_status[buffer_type] |= 1874 MPT3_DIAG_BUFFER_IS_RELEASED; 1875 dctlprintk(ioc, 1876 ioc_info(ioc, "%s: skipping due to FAULT state\n", 1877 __func__)); 1878 rc = -EAGAIN; 1879 goto out; 1880 } 1881 1882 if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) { 1883 ioc_err(ioc, "%s: ctl_cmd in use\n", __func__); 1884 rc = -EAGAIN; 1885 goto out; 1886 } 1887 1888 smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx); 1889 if (!smid) { 1890 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__); 1891 rc = -EAGAIN; 1892 goto out; 1893 } 1894 1895 ioc->ctl_cmds.status = MPT3_CMD_PENDING; 1896 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz); 1897 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); 1898 ioc->ctl_cmds.smid = smid; 1899 1900 mpi_request->Function = MPI2_FUNCTION_DIAG_RELEASE; 1901 mpi_request->BufferType = buffer_type; 1902 mpi_request->VF_ID = 0; /* TODO */ 1903 mpi_request->VP_ID = 0; 1904 1905 init_completion(&ioc->ctl_cmds.done); 1906 mpt3sas_base_put_smid_default(ioc, smid); 1907 wait_for_completion_timeout(&ioc->ctl_cmds.done, 1908 MPT3_IOCTL_DEFAULT_TIMEOUT*HZ); 1909 1910 if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) { 1911 *issue_reset = mpt3sas_base_check_cmd_timeout(ioc, 1912 ioc->ctl_cmds.status, mpi_request, 1913 sizeof(Mpi2DiagReleaseRequest_t)/4); 1914 rc = -EFAULT; 1915 goto out; 1916 } 1917 1918 /* process the completed Reply Message Frame */ 1919 if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) { 1920 ioc_err(ioc, "%s: no reply message\n", __func__); 1921 rc = -EFAULT; 1922 goto out; 1923 } 1924 1925 mpi_reply = ioc->ctl_cmds.reply; 1926 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK; 1927 1928 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) { 1929 ioc->diag_buffer_status[buffer_type] |= 1930 MPT3_DIAG_BUFFER_IS_RELEASED; 1931 dctlprintk(ioc, ioc_info(ioc, "%s: success\n", __func__)); 1932 } else { 1933 ioc_info(ioc, "%s: ioc_status(0x%04x) log_info(0x%08x)\n", 1934 __func__, 1935 ioc_status, le32_to_cpu(mpi_reply->IOCLogInfo)); 1936 rc = -EFAULT; 1937 } 1938 1939 out: 1940 ioc->ctl_cmds.status = MPT3_CMD_NOT_USED; 1941 return rc; 1942 } 1943 1944 /** 1945 * _ctl_diag_release - request to send Diag Release Message to firmware 1946 * @ioc: ? 1947 * @arg: user space buffer containing ioctl content 1948 * 1949 * This allows ownership of the specified buffer to returned to the driver, 1950 * allowing an application to read the buffer without fear that firmware is 1951 * overwriting information in the buffer. 1952 */ 1953 static long 1954 _ctl_diag_release(struct MPT3SAS_ADAPTER *ioc, void __user *arg) 1955 { 1956 struct mpt3_diag_release karg; 1957 void *request_data; 1958 int rc; 1959 u8 buffer_type; 1960 u8 issue_reset = 0; 1961 1962 if (copy_from_user(&karg, arg, sizeof(karg))) { 1963 pr_err("failure at %s:%d/%s()!\n", 1964 __FILE__, __LINE__, __func__); 1965 return -EFAULT; 1966 } 1967 1968 dctlprintk(ioc, ioc_info(ioc, "%s\n", 1969 __func__)); 1970 1971 buffer_type = karg.unique_id & 0x000000ff; 1972 if (!_ctl_diag_capability(ioc, buffer_type)) { 1973 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n", 1974 __func__, buffer_type); 1975 return -EPERM; 1976 } 1977 1978 if ((ioc->diag_buffer_status[buffer_type] & 1979 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) { 1980 ioc_err(ioc, "%s: buffer_type(0x%02x) is not registered\n", 1981 __func__, buffer_type); 1982 return -EINVAL; 1983 } 1984 1985 if (karg.unique_id != ioc->unique_id[buffer_type]) { 1986 ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n", 1987 __func__, karg.unique_id); 1988 return -EINVAL; 1989 } 1990 1991 if (ioc->diag_buffer_status[buffer_type] & 1992 MPT3_DIAG_BUFFER_IS_RELEASED) { 1993 ioc_err(ioc, "%s: buffer_type(0x%02x) is already released\n", 1994 __func__, buffer_type); 1995 return 0; 1996 } 1997 1998 request_data = ioc->diag_buffer[buffer_type]; 1999 2000 if (!request_data) { 2001 ioc_err(ioc, "%s: doesn't have memory allocated for buffer_type(0x%02x)\n", 2002 __func__, buffer_type); 2003 return -ENOMEM; 2004 } 2005 2006 /* buffers were released by due to host reset */ 2007 if ((ioc->diag_buffer_status[buffer_type] & 2008 MPT3_DIAG_BUFFER_IS_DIAG_RESET)) { 2009 ioc->diag_buffer_status[buffer_type] |= 2010 MPT3_DIAG_BUFFER_IS_RELEASED; 2011 ioc->diag_buffer_status[buffer_type] &= 2012 ~MPT3_DIAG_BUFFER_IS_DIAG_RESET; 2013 ioc_err(ioc, "%s: buffer_type(0x%02x) was released due to host reset\n", 2014 __func__, buffer_type); 2015 return 0; 2016 } 2017 2018 rc = mpt3sas_send_diag_release(ioc, buffer_type, &issue_reset); 2019 2020 if (issue_reset) 2021 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); 2022 2023 return rc; 2024 } 2025 2026 /** 2027 * _ctl_diag_read_buffer - request for copy of the diag buffer 2028 * @ioc: per adapter object 2029 * @arg: user space buffer containing ioctl content 2030 */ 2031 static long 2032 _ctl_diag_read_buffer(struct MPT3SAS_ADAPTER *ioc, void __user *arg) 2033 { 2034 struct mpt3_diag_read_buffer karg; 2035 struct mpt3_diag_read_buffer __user *uarg = arg; 2036 void *request_data, *diag_data; 2037 Mpi2DiagBufferPostRequest_t *mpi_request; 2038 Mpi2DiagBufferPostReply_t *mpi_reply; 2039 int rc, i; 2040 u8 buffer_type; 2041 unsigned long request_size, copy_size; 2042 u16 smid; 2043 u16 ioc_status; 2044 u8 issue_reset = 0; 2045 2046 if (copy_from_user(&karg, arg, sizeof(karg))) { 2047 pr_err("failure at %s:%d/%s()!\n", 2048 __FILE__, __LINE__, __func__); 2049 return -EFAULT; 2050 } 2051 2052 dctlprintk(ioc, ioc_info(ioc, "%s\n", 2053 __func__)); 2054 2055 buffer_type = karg.unique_id & 0x000000ff; 2056 if (!_ctl_diag_capability(ioc, buffer_type)) { 2057 ioc_err(ioc, "%s: doesn't have capability for buffer_type(0x%02x)\n", 2058 __func__, buffer_type); 2059 return -EPERM; 2060 } 2061 2062 if (karg.unique_id != ioc->unique_id[buffer_type]) { 2063 ioc_err(ioc, "%s: unique_id(0x%08x) is not registered\n", 2064 __func__, karg.unique_id); 2065 return -EINVAL; 2066 } 2067 2068 request_data = ioc->diag_buffer[buffer_type]; 2069 if (!request_data) { 2070 ioc_err(ioc, "%s: doesn't have buffer for buffer_type(0x%02x)\n", 2071 __func__, buffer_type); 2072 return -ENOMEM; 2073 } 2074 2075 request_size = ioc->diag_buffer_sz[buffer_type]; 2076 2077 if ((karg.starting_offset % 4) || (karg.bytes_to_read % 4)) { 2078 ioc_err(ioc, "%s: either the starting_offset or bytes_to_read are not 4 byte aligned\n", 2079 __func__); 2080 return -EINVAL; 2081 } 2082 2083 if (karg.starting_offset > request_size) 2084 return -EINVAL; 2085 2086 diag_data = (void *)(request_data + karg.starting_offset); 2087 dctlprintk(ioc, 2088 ioc_info(ioc, "%s: diag_buffer(%p), offset(%d), sz(%d)\n", 2089 __func__, diag_data, karg.starting_offset, 2090 karg.bytes_to_read)); 2091 2092 /* Truncate data on requests that are too large */ 2093 if ((diag_data + karg.bytes_to_read < diag_data) || 2094 (diag_data + karg.bytes_to_read > request_data + request_size)) 2095 copy_size = request_size - karg.starting_offset; 2096 else 2097 copy_size = karg.bytes_to_read; 2098 2099 if (copy_to_user((void __user *)uarg->diagnostic_data, 2100 diag_data, copy_size)) { 2101 ioc_err(ioc, "%s: Unable to write mpt_diag_read_buffer_t data @ %p\n", 2102 __func__, diag_data); 2103 return -EFAULT; 2104 } 2105 2106 if ((karg.flags & MPT3_FLAGS_REREGISTER) == 0) 2107 return 0; 2108 2109 dctlprintk(ioc, 2110 ioc_info(ioc, "%s: Reregister buffer_type(0x%02x)\n", 2111 __func__, buffer_type)); 2112 if ((ioc->diag_buffer_status[buffer_type] & 2113 MPT3_DIAG_BUFFER_IS_RELEASED) == 0) { 2114 dctlprintk(ioc, 2115 ioc_info(ioc, "%s: buffer_type(0x%02x) is still registered\n", 2116 __func__, buffer_type)); 2117 return 0; 2118 } 2119 /* Get a free request frame and save the message context. 2120 */ 2121 2122 if (ioc->ctl_cmds.status != MPT3_CMD_NOT_USED) { 2123 ioc_err(ioc, "%s: ctl_cmd in use\n", __func__); 2124 rc = -EAGAIN; 2125 goto out; 2126 } 2127 2128 smid = mpt3sas_base_get_smid(ioc, ioc->ctl_cb_idx); 2129 if (!smid) { 2130 ioc_err(ioc, "%s: failed obtaining a smid\n", __func__); 2131 rc = -EAGAIN; 2132 goto out; 2133 } 2134 2135 rc = 0; 2136 ioc->ctl_cmds.status = MPT3_CMD_PENDING; 2137 memset(ioc->ctl_cmds.reply, 0, ioc->reply_sz); 2138 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); 2139 ioc->ctl_cmds.smid = smid; 2140 2141 mpi_request->Function = MPI2_FUNCTION_DIAG_BUFFER_POST; 2142 mpi_request->BufferType = buffer_type; 2143 mpi_request->BufferLength = 2144 cpu_to_le32(ioc->diag_buffer_sz[buffer_type]); 2145 mpi_request->BufferAddress = 2146 cpu_to_le64(ioc->diag_buffer_dma[buffer_type]); 2147 for (i = 0; i < MPT3_PRODUCT_SPECIFIC_DWORDS; i++) 2148 mpi_request->ProductSpecific[i] = 2149 cpu_to_le32(ioc->product_specific[buffer_type][i]); 2150 mpi_request->VF_ID = 0; /* TODO */ 2151 mpi_request->VP_ID = 0; 2152 2153 init_completion(&ioc->ctl_cmds.done); 2154 mpt3sas_base_put_smid_default(ioc, smid); 2155 wait_for_completion_timeout(&ioc->ctl_cmds.done, 2156 MPT3_IOCTL_DEFAULT_TIMEOUT*HZ); 2157 2158 if (!(ioc->ctl_cmds.status & MPT3_CMD_COMPLETE)) { 2159 issue_reset = 2160 mpt3sas_base_check_cmd_timeout(ioc, 2161 ioc->ctl_cmds.status, mpi_request, 2162 sizeof(Mpi2DiagBufferPostRequest_t)/4); 2163 goto issue_host_reset; 2164 } 2165 2166 /* process the completed Reply Message Frame */ 2167 if ((ioc->ctl_cmds.status & MPT3_CMD_REPLY_VALID) == 0) { 2168 ioc_err(ioc, "%s: no reply message\n", __func__); 2169 rc = -EFAULT; 2170 goto out; 2171 } 2172 2173 mpi_reply = ioc->ctl_cmds.reply; 2174 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK; 2175 2176 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) { 2177 ioc->diag_buffer_status[buffer_type] |= 2178 MPT3_DIAG_BUFFER_IS_REGISTERED; 2179 dctlprintk(ioc, ioc_info(ioc, "%s: success\n", __func__)); 2180 } else { 2181 ioc_info(ioc, "%s: ioc_status(0x%04x) log_info(0x%08x)\n", 2182 __func__, ioc_status, 2183 le32_to_cpu(mpi_reply->IOCLogInfo)); 2184 rc = -EFAULT; 2185 } 2186 2187 issue_host_reset: 2188 if (issue_reset) 2189 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); 2190 2191 out: 2192 2193 ioc->ctl_cmds.status = MPT3_CMD_NOT_USED; 2194 return rc; 2195 } 2196 2197 2198 2199 #ifdef CONFIG_COMPAT 2200 /** 2201 * _ctl_compat_mpt_command - convert 32bit pointers to 64bit. 2202 * @ioc: per adapter object 2203 * @cmd: ioctl opcode 2204 * @arg: (struct mpt3_ioctl_command32) 2205 * 2206 * MPT3COMMAND32 - Handle 32bit applications running on 64bit os. 2207 */ 2208 static long 2209 _ctl_compat_mpt_command(struct MPT3SAS_ADAPTER *ioc, unsigned cmd, 2210 void __user *arg) 2211 { 2212 struct mpt3_ioctl_command32 karg32; 2213 struct mpt3_ioctl_command32 __user *uarg; 2214 struct mpt3_ioctl_command karg; 2215 2216 if (_IOC_SIZE(cmd) != sizeof(struct mpt3_ioctl_command32)) 2217 return -EINVAL; 2218 2219 uarg = (struct mpt3_ioctl_command32 __user *) arg; 2220 2221 if (copy_from_user(&karg32, (char __user *)arg, sizeof(karg32))) { 2222 pr_err("failure at %s:%d/%s()!\n", 2223 __FILE__, __LINE__, __func__); 2224 return -EFAULT; 2225 } 2226 2227 memset(&karg, 0, sizeof(struct mpt3_ioctl_command)); 2228 karg.hdr.ioc_number = karg32.hdr.ioc_number; 2229 karg.hdr.port_number = karg32.hdr.port_number; 2230 karg.hdr.max_data_size = karg32.hdr.max_data_size; 2231 karg.timeout = karg32.timeout; 2232 karg.max_reply_bytes = karg32.max_reply_bytes; 2233 karg.data_in_size = karg32.data_in_size; 2234 karg.data_out_size = karg32.data_out_size; 2235 karg.max_sense_bytes = karg32.max_sense_bytes; 2236 karg.data_sge_offset = karg32.data_sge_offset; 2237 karg.reply_frame_buf_ptr = compat_ptr(karg32.reply_frame_buf_ptr); 2238 karg.data_in_buf_ptr = compat_ptr(karg32.data_in_buf_ptr); 2239 karg.data_out_buf_ptr = compat_ptr(karg32.data_out_buf_ptr); 2240 karg.sense_data_ptr = compat_ptr(karg32.sense_data_ptr); 2241 return _ctl_do_mpt_command(ioc, karg, &uarg->mf); 2242 } 2243 #endif 2244 2245 /** 2246 * _ctl_ioctl_main - main ioctl entry point 2247 * @file: (struct file) 2248 * @cmd: ioctl opcode 2249 * @arg: user space data buffer 2250 * @compat: handles 32 bit applications in 64bit os 2251 * @mpi_version: will be MPI2_VERSION for mpt2ctl ioctl device & 2252 * MPI25_VERSION | MPI26_VERSION for mpt3ctl ioctl device. 2253 */ 2254 static long 2255 _ctl_ioctl_main(struct file *file, unsigned int cmd, void __user *arg, 2256 u8 compat, u16 mpi_version) 2257 { 2258 struct MPT3SAS_ADAPTER *ioc; 2259 struct mpt3_ioctl_header ioctl_header; 2260 enum block_state state; 2261 long ret = -EINVAL; 2262 2263 /* get IOCTL header */ 2264 if (copy_from_user(&ioctl_header, (char __user *)arg, 2265 sizeof(struct mpt3_ioctl_header))) { 2266 pr_err("failure at %s:%d/%s()!\n", 2267 __FILE__, __LINE__, __func__); 2268 return -EFAULT; 2269 } 2270 2271 if (_ctl_verify_adapter(ioctl_header.ioc_number, 2272 &ioc, mpi_version) == -1 || !ioc) 2273 return -ENODEV; 2274 2275 /* pci_access_mutex lock acquired by ioctl path */ 2276 mutex_lock(&ioc->pci_access_mutex); 2277 2278 if (ioc->shost_recovery || ioc->pci_error_recovery || 2279 ioc->is_driver_loading || ioc->remove_host) { 2280 ret = -EAGAIN; 2281 goto out_unlock_pciaccess; 2282 } 2283 2284 state = (file->f_flags & O_NONBLOCK) ? NON_BLOCKING : BLOCKING; 2285 if (state == NON_BLOCKING) { 2286 if (!mutex_trylock(&ioc->ctl_cmds.mutex)) { 2287 ret = -EAGAIN; 2288 goto out_unlock_pciaccess; 2289 } 2290 } else if (mutex_lock_interruptible(&ioc->ctl_cmds.mutex)) { 2291 ret = -ERESTARTSYS; 2292 goto out_unlock_pciaccess; 2293 } 2294 2295 2296 switch (cmd) { 2297 case MPT3IOCINFO: 2298 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_iocinfo)) 2299 ret = _ctl_getiocinfo(ioc, arg); 2300 break; 2301 #ifdef CONFIG_COMPAT 2302 case MPT3COMMAND32: 2303 #endif 2304 case MPT3COMMAND: 2305 { 2306 struct mpt3_ioctl_command __user *uarg; 2307 struct mpt3_ioctl_command karg; 2308 2309 #ifdef CONFIG_COMPAT 2310 if (compat) { 2311 ret = _ctl_compat_mpt_command(ioc, cmd, arg); 2312 break; 2313 } 2314 #endif 2315 if (copy_from_user(&karg, arg, sizeof(karg))) { 2316 pr_err("failure at %s:%d/%s()!\n", 2317 __FILE__, __LINE__, __func__); 2318 ret = -EFAULT; 2319 break; 2320 } 2321 2322 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_command)) { 2323 uarg = arg; 2324 ret = _ctl_do_mpt_command(ioc, karg, &uarg->mf); 2325 } 2326 break; 2327 } 2328 case MPT3EVENTQUERY: 2329 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_eventquery)) 2330 ret = _ctl_eventquery(ioc, arg); 2331 break; 2332 case MPT3EVENTENABLE: 2333 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_eventenable)) 2334 ret = _ctl_eventenable(ioc, arg); 2335 break; 2336 case MPT3EVENTREPORT: 2337 ret = _ctl_eventreport(ioc, arg); 2338 break; 2339 case MPT3HARDRESET: 2340 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_diag_reset)) 2341 ret = _ctl_do_reset(ioc, arg); 2342 break; 2343 case MPT3BTDHMAPPING: 2344 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_ioctl_btdh_mapping)) 2345 ret = _ctl_btdh_mapping(ioc, arg); 2346 break; 2347 case MPT3DIAGREGISTER: 2348 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_register)) 2349 ret = _ctl_diag_register(ioc, arg); 2350 break; 2351 case MPT3DIAGUNREGISTER: 2352 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_unregister)) 2353 ret = _ctl_diag_unregister(ioc, arg); 2354 break; 2355 case MPT3DIAGQUERY: 2356 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_query)) 2357 ret = _ctl_diag_query(ioc, arg); 2358 break; 2359 case MPT3DIAGRELEASE: 2360 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_release)) 2361 ret = _ctl_diag_release(ioc, arg); 2362 break; 2363 case MPT3DIAGREADBUFFER: 2364 if (_IOC_SIZE(cmd) == sizeof(struct mpt3_diag_read_buffer)) 2365 ret = _ctl_diag_read_buffer(ioc, arg); 2366 break; 2367 default: 2368 dctlprintk(ioc, 2369 ioc_info(ioc, "unsupported ioctl opcode(0x%08x)\n", 2370 cmd)); 2371 break; 2372 } 2373 2374 mutex_unlock(&ioc->ctl_cmds.mutex); 2375 out_unlock_pciaccess: 2376 mutex_unlock(&ioc->pci_access_mutex); 2377 return ret; 2378 } 2379 2380 /** 2381 * _ctl_ioctl - mpt3ctl main ioctl entry point (unlocked) 2382 * @file: (struct file) 2383 * @cmd: ioctl opcode 2384 * @arg: ? 2385 */ 2386 static long 2387 _ctl_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 2388 { 2389 long ret; 2390 2391 /* pass MPI25_VERSION | MPI26_VERSION value, 2392 * to indicate that this ioctl cmd 2393 * came from mpt3ctl ioctl device. 2394 */ 2395 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0, 2396 MPI25_VERSION | MPI26_VERSION); 2397 return ret; 2398 } 2399 2400 /** 2401 * _ctl_mpt2_ioctl - mpt2ctl main ioctl entry point (unlocked) 2402 * @file: (struct file) 2403 * @cmd: ioctl opcode 2404 * @arg: ? 2405 */ 2406 static long 2407 _ctl_mpt2_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 2408 { 2409 long ret; 2410 2411 /* pass MPI2_VERSION value, to indicate that this ioctl cmd 2412 * came from mpt2ctl ioctl device. 2413 */ 2414 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 0, MPI2_VERSION); 2415 return ret; 2416 } 2417 #ifdef CONFIG_COMPAT 2418 /** 2419 *_ ctl_ioctl_compat - main ioctl entry point (compat) 2420 * @file: ? 2421 * @cmd: ? 2422 * @arg: ? 2423 * 2424 * This routine handles 32 bit applications in 64bit os. 2425 */ 2426 static long 2427 _ctl_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg) 2428 { 2429 long ret; 2430 2431 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1, 2432 MPI25_VERSION | MPI26_VERSION); 2433 return ret; 2434 } 2435 2436 /** 2437 *_ ctl_mpt2_ioctl_compat - main ioctl entry point (compat) 2438 * @file: ? 2439 * @cmd: ? 2440 * @arg: ? 2441 * 2442 * This routine handles 32 bit applications in 64bit os. 2443 */ 2444 static long 2445 _ctl_mpt2_ioctl_compat(struct file *file, unsigned cmd, unsigned long arg) 2446 { 2447 long ret; 2448 2449 ret = _ctl_ioctl_main(file, cmd, (void __user *)arg, 1, MPI2_VERSION); 2450 return ret; 2451 } 2452 #endif 2453 2454 /* scsi host attributes */ 2455 /** 2456 * _ctl_version_fw_show - firmware version 2457 * @cdev: pointer to embedded class device 2458 * @attr: ? 2459 * @buf: the buffer returned 2460 * 2461 * A sysfs 'read-only' shost attribute. 2462 */ 2463 static ssize_t 2464 _ctl_version_fw_show(struct device *cdev, struct device_attribute *attr, 2465 char *buf) 2466 { 2467 struct Scsi_Host *shost = class_to_shost(cdev); 2468 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2469 2470 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n", 2471 (ioc->facts.FWVersion.Word & 0xFF000000) >> 24, 2472 (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16, 2473 (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8, 2474 ioc->facts.FWVersion.Word & 0x000000FF); 2475 } 2476 static DEVICE_ATTR(version_fw, S_IRUGO, _ctl_version_fw_show, NULL); 2477 2478 /** 2479 * _ctl_version_bios_show - bios version 2480 * @cdev: pointer to embedded class device 2481 * @attr: ? 2482 * @buf: the buffer returned 2483 * 2484 * A sysfs 'read-only' shost attribute. 2485 */ 2486 static ssize_t 2487 _ctl_version_bios_show(struct device *cdev, struct device_attribute *attr, 2488 char *buf) 2489 { 2490 struct Scsi_Host *shost = class_to_shost(cdev); 2491 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2492 2493 u32 version = le32_to_cpu(ioc->bios_pg3.BiosVersion); 2494 2495 return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n", 2496 (version & 0xFF000000) >> 24, 2497 (version & 0x00FF0000) >> 16, 2498 (version & 0x0000FF00) >> 8, 2499 version & 0x000000FF); 2500 } 2501 static DEVICE_ATTR(version_bios, S_IRUGO, _ctl_version_bios_show, NULL); 2502 2503 /** 2504 * _ctl_version_mpi_show - MPI (message passing interface) version 2505 * @cdev: pointer to embedded class device 2506 * @attr: ? 2507 * @buf: the buffer returned 2508 * 2509 * A sysfs 'read-only' shost attribute. 2510 */ 2511 static ssize_t 2512 _ctl_version_mpi_show(struct device *cdev, struct device_attribute *attr, 2513 char *buf) 2514 { 2515 struct Scsi_Host *shost = class_to_shost(cdev); 2516 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2517 2518 return snprintf(buf, PAGE_SIZE, "%03x.%02x\n", 2519 ioc->facts.MsgVersion, ioc->facts.HeaderVersion >> 8); 2520 } 2521 static DEVICE_ATTR(version_mpi, S_IRUGO, _ctl_version_mpi_show, NULL); 2522 2523 /** 2524 * _ctl_version_product_show - product name 2525 * @cdev: pointer to embedded class device 2526 * @attr: ? 2527 * @buf: the buffer returned 2528 * 2529 * A sysfs 'read-only' shost attribute. 2530 */ 2531 static ssize_t 2532 _ctl_version_product_show(struct device *cdev, struct device_attribute *attr, 2533 char *buf) 2534 { 2535 struct Scsi_Host *shost = class_to_shost(cdev); 2536 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2537 2538 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.ChipName); 2539 } 2540 static DEVICE_ATTR(version_product, S_IRUGO, _ctl_version_product_show, NULL); 2541 2542 /** 2543 * _ctl_version_nvdata_persistent_show - ndvata persistent version 2544 * @cdev: pointer to embedded class device 2545 * @attr: ? 2546 * @buf: the buffer returned 2547 * 2548 * A sysfs 'read-only' shost attribute. 2549 */ 2550 static ssize_t 2551 _ctl_version_nvdata_persistent_show(struct device *cdev, 2552 struct device_attribute *attr, char *buf) 2553 { 2554 struct Scsi_Host *shost = class_to_shost(cdev); 2555 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2556 2557 return snprintf(buf, PAGE_SIZE, "%08xh\n", 2558 le32_to_cpu(ioc->iounit_pg0.NvdataVersionPersistent.Word)); 2559 } 2560 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO, 2561 _ctl_version_nvdata_persistent_show, NULL); 2562 2563 /** 2564 * _ctl_version_nvdata_default_show - nvdata default version 2565 * @cdev: pointer to embedded class device 2566 * @attr: ? 2567 * @buf: the buffer returned 2568 * 2569 * A sysfs 'read-only' shost attribute. 2570 */ 2571 static ssize_t 2572 _ctl_version_nvdata_default_show(struct device *cdev, struct device_attribute 2573 *attr, char *buf) 2574 { 2575 struct Scsi_Host *shost = class_to_shost(cdev); 2576 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2577 2578 return snprintf(buf, PAGE_SIZE, "%08xh\n", 2579 le32_to_cpu(ioc->iounit_pg0.NvdataVersionDefault.Word)); 2580 } 2581 static DEVICE_ATTR(version_nvdata_default, S_IRUGO, 2582 _ctl_version_nvdata_default_show, NULL); 2583 2584 /** 2585 * _ctl_board_name_show - board name 2586 * @cdev: pointer to embedded class device 2587 * @attr: ? 2588 * @buf: the buffer returned 2589 * 2590 * A sysfs 'read-only' shost attribute. 2591 */ 2592 static ssize_t 2593 _ctl_board_name_show(struct device *cdev, struct device_attribute *attr, 2594 char *buf) 2595 { 2596 struct Scsi_Host *shost = class_to_shost(cdev); 2597 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2598 2599 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardName); 2600 } 2601 static DEVICE_ATTR(board_name, S_IRUGO, _ctl_board_name_show, NULL); 2602 2603 /** 2604 * _ctl_board_assembly_show - board assembly name 2605 * @cdev: pointer to embedded class device 2606 * @attr: ? 2607 * @buf: the buffer returned 2608 * 2609 * A sysfs 'read-only' shost attribute. 2610 */ 2611 static ssize_t 2612 _ctl_board_assembly_show(struct device *cdev, struct device_attribute *attr, 2613 char *buf) 2614 { 2615 struct Scsi_Host *shost = class_to_shost(cdev); 2616 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2617 2618 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardAssembly); 2619 } 2620 static DEVICE_ATTR(board_assembly, S_IRUGO, _ctl_board_assembly_show, NULL); 2621 2622 /** 2623 * _ctl_board_tracer_show - board tracer number 2624 * @cdev: pointer to embedded class device 2625 * @attr: ? 2626 * @buf: the buffer returned 2627 * 2628 * A sysfs 'read-only' shost attribute. 2629 */ 2630 static ssize_t 2631 _ctl_board_tracer_show(struct device *cdev, struct device_attribute *attr, 2632 char *buf) 2633 { 2634 struct Scsi_Host *shost = class_to_shost(cdev); 2635 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2636 2637 return snprintf(buf, 16, "%s\n", ioc->manu_pg0.BoardTracerNumber); 2638 } 2639 static DEVICE_ATTR(board_tracer, S_IRUGO, _ctl_board_tracer_show, NULL); 2640 2641 /** 2642 * _ctl_io_delay_show - io missing delay 2643 * @cdev: pointer to embedded class device 2644 * @attr: ? 2645 * @buf: the buffer returned 2646 * 2647 * This is for firmware implemention for deboucing device 2648 * removal events. 2649 * 2650 * A sysfs 'read-only' shost attribute. 2651 */ 2652 static ssize_t 2653 _ctl_io_delay_show(struct device *cdev, struct device_attribute *attr, 2654 char *buf) 2655 { 2656 struct Scsi_Host *shost = class_to_shost(cdev); 2657 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2658 2659 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay); 2660 } 2661 static DEVICE_ATTR(io_delay, S_IRUGO, _ctl_io_delay_show, NULL); 2662 2663 /** 2664 * _ctl_device_delay_show - device missing delay 2665 * @cdev: pointer to embedded class device 2666 * @attr: ? 2667 * @buf: the buffer returned 2668 * 2669 * This is for firmware implemention for deboucing device 2670 * removal events. 2671 * 2672 * A sysfs 'read-only' shost attribute. 2673 */ 2674 static ssize_t 2675 _ctl_device_delay_show(struct device *cdev, struct device_attribute *attr, 2676 char *buf) 2677 { 2678 struct Scsi_Host *shost = class_to_shost(cdev); 2679 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2680 2681 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay); 2682 } 2683 static DEVICE_ATTR(device_delay, S_IRUGO, _ctl_device_delay_show, NULL); 2684 2685 /** 2686 * _ctl_fw_queue_depth_show - global credits 2687 * @cdev: pointer to embedded class device 2688 * @attr: ? 2689 * @buf: the buffer returned 2690 * 2691 * This is firmware queue depth limit 2692 * 2693 * A sysfs 'read-only' shost attribute. 2694 */ 2695 static ssize_t 2696 _ctl_fw_queue_depth_show(struct device *cdev, struct device_attribute *attr, 2697 char *buf) 2698 { 2699 struct Scsi_Host *shost = class_to_shost(cdev); 2700 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2701 2702 return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->facts.RequestCredit); 2703 } 2704 static DEVICE_ATTR(fw_queue_depth, S_IRUGO, _ctl_fw_queue_depth_show, NULL); 2705 2706 /** 2707 * _ctl_sas_address_show - sas address 2708 * @cdev: pointer to embedded class device 2709 * @attr: ? 2710 * @buf: the buffer returned 2711 * 2712 * This is the controller sas address 2713 * 2714 * A sysfs 'read-only' shost attribute. 2715 */ 2716 static ssize_t 2717 _ctl_host_sas_address_show(struct device *cdev, struct device_attribute *attr, 2718 char *buf) 2719 2720 { 2721 struct Scsi_Host *shost = class_to_shost(cdev); 2722 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2723 2724 return snprintf(buf, PAGE_SIZE, "0x%016llx\n", 2725 (unsigned long long)ioc->sas_hba.sas_address); 2726 } 2727 static DEVICE_ATTR(host_sas_address, S_IRUGO, 2728 _ctl_host_sas_address_show, NULL); 2729 2730 /** 2731 * _ctl_logging_level_show - logging level 2732 * @cdev: pointer to embedded class device 2733 * @attr: ? 2734 * @buf: the buffer returned 2735 * 2736 * A sysfs 'read/write' shost attribute. 2737 */ 2738 static ssize_t 2739 _ctl_logging_level_show(struct device *cdev, struct device_attribute *attr, 2740 char *buf) 2741 { 2742 struct Scsi_Host *shost = class_to_shost(cdev); 2743 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2744 2745 return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->logging_level); 2746 } 2747 static ssize_t 2748 _ctl_logging_level_store(struct device *cdev, struct device_attribute *attr, 2749 const char *buf, size_t count) 2750 { 2751 struct Scsi_Host *shost = class_to_shost(cdev); 2752 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2753 int val = 0; 2754 2755 if (sscanf(buf, "%x", &val) != 1) 2756 return -EINVAL; 2757 2758 ioc->logging_level = val; 2759 ioc_info(ioc, "logging_level=%08xh\n", 2760 ioc->logging_level); 2761 return strlen(buf); 2762 } 2763 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR, _ctl_logging_level_show, 2764 _ctl_logging_level_store); 2765 2766 /** 2767 * _ctl_fwfault_debug_show - show/store fwfault_debug 2768 * @cdev: pointer to embedded class device 2769 * @attr: ? 2770 * @buf: the buffer returned 2771 * 2772 * mpt3sas_fwfault_debug is command line option 2773 * A sysfs 'read/write' shost attribute. 2774 */ 2775 static ssize_t 2776 _ctl_fwfault_debug_show(struct device *cdev, struct device_attribute *attr, 2777 char *buf) 2778 { 2779 struct Scsi_Host *shost = class_to_shost(cdev); 2780 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2781 2782 return snprintf(buf, PAGE_SIZE, "%d\n", ioc->fwfault_debug); 2783 } 2784 static ssize_t 2785 _ctl_fwfault_debug_store(struct device *cdev, struct device_attribute *attr, 2786 const char *buf, size_t count) 2787 { 2788 struct Scsi_Host *shost = class_to_shost(cdev); 2789 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2790 int val = 0; 2791 2792 if (sscanf(buf, "%d", &val) != 1) 2793 return -EINVAL; 2794 2795 ioc->fwfault_debug = val; 2796 ioc_info(ioc, "fwfault_debug=%d\n", 2797 ioc->fwfault_debug); 2798 return strlen(buf); 2799 } 2800 static DEVICE_ATTR(fwfault_debug, S_IRUGO | S_IWUSR, 2801 _ctl_fwfault_debug_show, _ctl_fwfault_debug_store); 2802 2803 /** 2804 * _ctl_ioc_reset_count_show - ioc reset count 2805 * @cdev: pointer to embedded class device 2806 * @attr: ? 2807 * @buf: the buffer returned 2808 * 2809 * This is firmware queue depth limit 2810 * 2811 * A sysfs 'read-only' shost attribute. 2812 */ 2813 static ssize_t 2814 _ctl_ioc_reset_count_show(struct device *cdev, struct device_attribute *attr, 2815 char *buf) 2816 { 2817 struct Scsi_Host *shost = class_to_shost(cdev); 2818 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2819 2820 return snprintf(buf, PAGE_SIZE, "%d\n", ioc->ioc_reset_count); 2821 } 2822 static DEVICE_ATTR(ioc_reset_count, S_IRUGO, _ctl_ioc_reset_count_show, NULL); 2823 2824 /** 2825 * _ctl_ioc_reply_queue_count_show - number of reply queues 2826 * @cdev: pointer to embedded class device 2827 * @attr: ? 2828 * @buf: the buffer returned 2829 * 2830 * This is number of reply queues 2831 * 2832 * A sysfs 'read-only' shost attribute. 2833 */ 2834 static ssize_t 2835 _ctl_ioc_reply_queue_count_show(struct device *cdev, 2836 struct device_attribute *attr, char *buf) 2837 { 2838 u8 reply_queue_count; 2839 struct Scsi_Host *shost = class_to_shost(cdev); 2840 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2841 2842 if ((ioc->facts.IOCCapabilities & 2843 MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable) 2844 reply_queue_count = ioc->reply_queue_count; 2845 else 2846 reply_queue_count = 1; 2847 2848 return snprintf(buf, PAGE_SIZE, "%d\n", reply_queue_count); 2849 } 2850 static DEVICE_ATTR(reply_queue_count, S_IRUGO, _ctl_ioc_reply_queue_count_show, 2851 NULL); 2852 2853 /** 2854 * _ctl_BRM_status_show - Backup Rail Monitor Status 2855 * @cdev: pointer to embedded class device 2856 * @attr: ? 2857 * @buf: the buffer returned 2858 * 2859 * This is number of reply queues 2860 * 2861 * A sysfs 'read-only' shost attribute. 2862 */ 2863 static ssize_t 2864 _ctl_BRM_status_show(struct device *cdev, struct device_attribute *attr, 2865 char *buf) 2866 { 2867 struct Scsi_Host *shost = class_to_shost(cdev); 2868 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2869 Mpi2IOUnitPage3_t *io_unit_pg3 = NULL; 2870 Mpi2ConfigReply_t mpi_reply; 2871 u16 backup_rail_monitor_status = 0; 2872 u16 ioc_status; 2873 int sz; 2874 ssize_t rc = 0; 2875 2876 if (!ioc->is_warpdrive) { 2877 ioc_err(ioc, "%s: BRM attribute is only for warpdrive\n", 2878 __func__); 2879 goto out; 2880 } 2881 /* pci_access_mutex lock acquired by sysfs show path */ 2882 mutex_lock(&ioc->pci_access_mutex); 2883 if (ioc->pci_error_recovery || ioc->remove_host) { 2884 mutex_unlock(&ioc->pci_access_mutex); 2885 return 0; 2886 } 2887 2888 /* allocate upto GPIOVal 36 entries */ 2889 sz = offsetof(Mpi2IOUnitPage3_t, GPIOVal) + (sizeof(u16) * 36); 2890 io_unit_pg3 = kzalloc(sz, GFP_KERNEL); 2891 if (!io_unit_pg3) { 2892 ioc_err(ioc, "%s: failed allocating memory for iounit_pg3: (%d) bytes\n", 2893 __func__, sz); 2894 goto out; 2895 } 2896 2897 if (mpt3sas_config_get_iounit_pg3(ioc, &mpi_reply, io_unit_pg3, sz) != 2898 0) { 2899 ioc_err(ioc, "%s: failed reading iounit_pg3\n", 2900 __func__); 2901 goto out; 2902 } 2903 2904 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK; 2905 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) { 2906 ioc_err(ioc, "%s: iounit_pg3 failed with ioc_status(0x%04x)\n", 2907 __func__, ioc_status); 2908 goto out; 2909 } 2910 2911 if (io_unit_pg3->GPIOCount < 25) { 2912 ioc_err(ioc, "%s: iounit_pg3->GPIOCount less than 25 entries, detected (%d) entries\n", 2913 __func__, io_unit_pg3->GPIOCount); 2914 goto out; 2915 } 2916 2917 /* BRM status is in bit zero of GPIOVal[24] */ 2918 backup_rail_monitor_status = le16_to_cpu(io_unit_pg3->GPIOVal[24]); 2919 rc = snprintf(buf, PAGE_SIZE, "%d\n", (backup_rail_monitor_status & 1)); 2920 2921 out: 2922 kfree(io_unit_pg3); 2923 mutex_unlock(&ioc->pci_access_mutex); 2924 return rc; 2925 } 2926 static DEVICE_ATTR(BRM_status, S_IRUGO, _ctl_BRM_status_show, NULL); 2927 2928 struct DIAG_BUFFER_START { 2929 __le32 Size; 2930 __le32 DiagVersion; 2931 u8 BufferType; 2932 u8 Reserved[3]; 2933 __le32 Reserved1; 2934 __le32 Reserved2; 2935 __le32 Reserved3; 2936 }; 2937 2938 /** 2939 * _ctl_host_trace_buffer_size_show - host buffer size (trace only) 2940 * @cdev: pointer to embedded class device 2941 * @attr: ? 2942 * @buf: the buffer returned 2943 * 2944 * A sysfs 'read-only' shost attribute. 2945 */ 2946 static ssize_t 2947 _ctl_host_trace_buffer_size_show(struct device *cdev, 2948 struct device_attribute *attr, char *buf) 2949 { 2950 struct Scsi_Host *shost = class_to_shost(cdev); 2951 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 2952 u32 size = 0; 2953 struct DIAG_BUFFER_START *request_data; 2954 2955 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) { 2956 ioc_err(ioc, "%s: host_trace_buffer is not registered\n", 2957 __func__); 2958 return 0; 2959 } 2960 2961 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & 2962 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) { 2963 ioc_err(ioc, "%s: host_trace_buffer is not registered\n", 2964 __func__); 2965 return 0; 2966 } 2967 2968 request_data = (struct DIAG_BUFFER_START *) 2969 ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]; 2970 if ((le32_to_cpu(request_data->DiagVersion) == 0x00000000 || 2971 le32_to_cpu(request_data->DiagVersion) == 0x01000000 || 2972 le32_to_cpu(request_data->DiagVersion) == 0x01010000) && 2973 le32_to_cpu(request_data->Reserved3) == 0x4742444c) 2974 size = le32_to_cpu(request_data->Size); 2975 2976 ioc->ring_buffer_sz = size; 2977 return snprintf(buf, PAGE_SIZE, "%d\n", size); 2978 } 2979 static DEVICE_ATTR(host_trace_buffer_size, S_IRUGO, 2980 _ctl_host_trace_buffer_size_show, NULL); 2981 2982 /** 2983 * _ctl_host_trace_buffer_show - firmware ring buffer (trace only) 2984 * @cdev: pointer to embedded class device 2985 * @attr: ? 2986 * @buf: the buffer returned 2987 * 2988 * A sysfs 'read/write' shost attribute. 2989 * 2990 * You will only be able to read 4k bytes of ring buffer at a time. 2991 * In order to read beyond 4k bytes, you will have to write out the 2992 * offset to the same attribute, it will move the pointer. 2993 */ 2994 static ssize_t 2995 _ctl_host_trace_buffer_show(struct device *cdev, struct device_attribute *attr, 2996 char *buf) 2997 { 2998 struct Scsi_Host *shost = class_to_shost(cdev); 2999 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 3000 void *request_data; 3001 u32 size; 3002 3003 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) { 3004 ioc_err(ioc, "%s: host_trace_buffer is not registered\n", 3005 __func__); 3006 return 0; 3007 } 3008 3009 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & 3010 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) { 3011 ioc_err(ioc, "%s: host_trace_buffer is not registered\n", 3012 __func__); 3013 return 0; 3014 } 3015 3016 if (ioc->ring_buffer_offset > ioc->ring_buffer_sz) 3017 return 0; 3018 3019 size = ioc->ring_buffer_sz - ioc->ring_buffer_offset; 3020 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size; 3021 request_data = ioc->diag_buffer[0] + ioc->ring_buffer_offset; 3022 memcpy(buf, request_data, size); 3023 return size; 3024 } 3025 3026 static ssize_t 3027 _ctl_host_trace_buffer_store(struct device *cdev, struct device_attribute *attr, 3028 const char *buf, size_t count) 3029 { 3030 struct Scsi_Host *shost = class_to_shost(cdev); 3031 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 3032 int val = 0; 3033 3034 if (sscanf(buf, "%d", &val) != 1) 3035 return -EINVAL; 3036 3037 ioc->ring_buffer_offset = val; 3038 return strlen(buf); 3039 } 3040 static DEVICE_ATTR(host_trace_buffer, S_IRUGO | S_IWUSR, 3041 _ctl_host_trace_buffer_show, _ctl_host_trace_buffer_store); 3042 3043 3044 /*****************************************/ 3045 3046 /** 3047 * _ctl_host_trace_buffer_enable_show - firmware ring buffer (trace only) 3048 * @cdev: pointer to embedded class device 3049 * @attr: ? 3050 * @buf: the buffer returned 3051 * 3052 * A sysfs 'read/write' shost attribute. 3053 * 3054 * This is a mechnism to post/release host_trace_buffers 3055 */ 3056 static ssize_t 3057 _ctl_host_trace_buffer_enable_show(struct device *cdev, 3058 struct device_attribute *attr, char *buf) 3059 { 3060 struct Scsi_Host *shost = class_to_shost(cdev); 3061 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 3062 3063 if ((!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) || 3064 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & 3065 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0)) 3066 return snprintf(buf, PAGE_SIZE, "off\n"); 3067 else if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & 3068 MPT3_DIAG_BUFFER_IS_RELEASED)) 3069 return snprintf(buf, PAGE_SIZE, "release\n"); 3070 else 3071 return snprintf(buf, PAGE_SIZE, "post\n"); 3072 } 3073 3074 static ssize_t 3075 _ctl_host_trace_buffer_enable_store(struct device *cdev, 3076 struct device_attribute *attr, const char *buf, size_t count) 3077 { 3078 struct Scsi_Host *shost = class_to_shost(cdev); 3079 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 3080 char str[10] = ""; 3081 struct mpt3_diag_register diag_register; 3082 u8 issue_reset = 0; 3083 3084 /* don't allow post/release occurr while recovery is active */ 3085 if (ioc->shost_recovery || ioc->remove_host || 3086 ioc->pci_error_recovery || ioc->is_driver_loading) 3087 return -EBUSY; 3088 3089 if (sscanf(buf, "%9s", str) != 1) 3090 return -EINVAL; 3091 3092 if (!strcmp(str, "post")) { 3093 /* exit out if host buffers are already posted */ 3094 if ((ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) && 3095 (ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & 3096 MPT3_DIAG_BUFFER_IS_REGISTERED) && 3097 ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & 3098 MPT3_DIAG_BUFFER_IS_RELEASED) == 0)) 3099 goto out; 3100 memset(&diag_register, 0, sizeof(struct mpt3_diag_register)); 3101 ioc_info(ioc, "posting host trace buffers\n"); 3102 diag_register.buffer_type = MPI2_DIAG_BUF_TYPE_TRACE; 3103 diag_register.requested_buffer_size = (1024 * 1024); 3104 diag_register.unique_id = 0x7075900; 3105 ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] = 0; 3106 _ctl_diag_register_2(ioc, &diag_register); 3107 } else if (!strcmp(str, "release")) { 3108 /* exit out if host buffers are already released */ 3109 if (!ioc->diag_buffer[MPI2_DIAG_BUF_TYPE_TRACE]) 3110 goto out; 3111 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & 3112 MPT3_DIAG_BUFFER_IS_REGISTERED) == 0) 3113 goto out; 3114 if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] & 3115 MPT3_DIAG_BUFFER_IS_RELEASED)) 3116 goto out; 3117 ioc_info(ioc, "releasing host trace buffer\n"); 3118 mpt3sas_send_diag_release(ioc, MPI2_DIAG_BUF_TYPE_TRACE, 3119 &issue_reset); 3120 } 3121 3122 out: 3123 return strlen(buf); 3124 } 3125 static DEVICE_ATTR(host_trace_buffer_enable, S_IRUGO | S_IWUSR, 3126 _ctl_host_trace_buffer_enable_show, 3127 _ctl_host_trace_buffer_enable_store); 3128 3129 /*********** diagnostic trigger suppport *********************************/ 3130 3131 /** 3132 * _ctl_diag_trigger_master_show - show the diag_trigger_master attribute 3133 * @cdev: pointer to embedded class device 3134 * @attr: ? 3135 * @buf: the buffer returned 3136 * 3137 * A sysfs 'read/write' shost attribute. 3138 */ 3139 static ssize_t 3140 _ctl_diag_trigger_master_show(struct device *cdev, 3141 struct device_attribute *attr, char *buf) 3142 3143 { 3144 struct Scsi_Host *shost = class_to_shost(cdev); 3145 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 3146 unsigned long flags; 3147 ssize_t rc; 3148 3149 spin_lock_irqsave(&ioc->diag_trigger_lock, flags); 3150 rc = sizeof(struct SL_WH_MASTER_TRIGGER_T); 3151 memcpy(buf, &ioc->diag_trigger_master, rc); 3152 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags); 3153 return rc; 3154 } 3155 3156 /** 3157 * _ctl_diag_trigger_master_store - store the diag_trigger_master attribute 3158 * @cdev: pointer to embedded class device 3159 * @attr: ? 3160 * @buf: the buffer returned 3161 * @count: ? 3162 * 3163 * A sysfs 'read/write' shost attribute. 3164 */ 3165 static ssize_t 3166 _ctl_diag_trigger_master_store(struct device *cdev, 3167 struct device_attribute *attr, const char *buf, size_t count) 3168 3169 { 3170 struct Scsi_Host *shost = class_to_shost(cdev); 3171 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 3172 unsigned long flags; 3173 ssize_t rc; 3174 3175 spin_lock_irqsave(&ioc->diag_trigger_lock, flags); 3176 rc = min(sizeof(struct SL_WH_MASTER_TRIGGER_T), count); 3177 memset(&ioc->diag_trigger_master, 0, 3178 sizeof(struct SL_WH_MASTER_TRIGGER_T)); 3179 memcpy(&ioc->diag_trigger_master, buf, rc); 3180 ioc->diag_trigger_master.MasterData |= 3181 (MASTER_TRIGGER_FW_FAULT + MASTER_TRIGGER_ADAPTER_RESET); 3182 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags); 3183 return rc; 3184 } 3185 static DEVICE_ATTR(diag_trigger_master, S_IRUGO | S_IWUSR, 3186 _ctl_diag_trigger_master_show, _ctl_diag_trigger_master_store); 3187 3188 3189 /** 3190 * _ctl_diag_trigger_event_show - show the diag_trigger_event attribute 3191 * @cdev: pointer to embedded class device 3192 * @attr: ? 3193 * @buf: the buffer returned 3194 * 3195 * A sysfs 'read/write' shost attribute. 3196 */ 3197 static ssize_t 3198 _ctl_diag_trigger_event_show(struct device *cdev, 3199 struct device_attribute *attr, char *buf) 3200 { 3201 struct Scsi_Host *shost = class_to_shost(cdev); 3202 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 3203 unsigned long flags; 3204 ssize_t rc; 3205 3206 spin_lock_irqsave(&ioc->diag_trigger_lock, flags); 3207 rc = sizeof(struct SL_WH_EVENT_TRIGGERS_T); 3208 memcpy(buf, &ioc->diag_trigger_event, rc); 3209 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags); 3210 return rc; 3211 } 3212 3213 /** 3214 * _ctl_diag_trigger_event_store - store the diag_trigger_event attribute 3215 * @cdev: pointer to embedded class device 3216 * @attr: ? 3217 * @buf: the buffer returned 3218 * @count: ? 3219 * 3220 * A sysfs 'read/write' shost attribute. 3221 */ 3222 static ssize_t 3223 _ctl_diag_trigger_event_store(struct device *cdev, 3224 struct device_attribute *attr, const char *buf, size_t count) 3225 3226 { 3227 struct Scsi_Host *shost = class_to_shost(cdev); 3228 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 3229 unsigned long flags; 3230 ssize_t sz; 3231 3232 spin_lock_irqsave(&ioc->diag_trigger_lock, flags); 3233 sz = min(sizeof(struct SL_WH_EVENT_TRIGGERS_T), count); 3234 memset(&ioc->diag_trigger_event, 0, 3235 sizeof(struct SL_WH_EVENT_TRIGGERS_T)); 3236 memcpy(&ioc->diag_trigger_event, buf, sz); 3237 if (ioc->diag_trigger_event.ValidEntries > NUM_VALID_ENTRIES) 3238 ioc->diag_trigger_event.ValidEntries = NUM_VALID_ENTRIES; 3239 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags); 3240 return sz; 3241 } 3242 static DEVICE_ATTR(diag_trigger_event, S_IRUGO | S_IWUSR, 3243 _ctl_diag_trigger_event_show, _ctl_diag_trigger_event_store); 3244 3245 3246 /** 3247 * _ctl_diag_trigger_scsi_show - show the diag_trigger_scsi attribute 3248 * @cdev: pointer to embedded class device 3249 * @attr: ? 3250 * @buf: the buffer returned 3251 * 3252 * A sysfs 'read/write' shost attribute. 3253 */ 3254 static ssize_t 3255 _ctl_diag_trigger_scsi_show(struct device *cdev, 3256 struct device_attribute *attr, char *buf) 3257 { 3258 struct Scsi_Host *shost = class_to_shost(cdev); 3259 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 3260 unsigned long flags; 3261 ssize_t rc; 3262 3263 spin_lock_irqsave(&ioc->diag_trigger_lock, flags); 3264 rc = sizeof(struct SL_WH_SCSI_TRIGGERS_T); 3265 memcpy(buf, &ioc->diag_trigger_scsi, rc); 3266 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags); 3267 return rc; 3268 } 3269 3270 /** 3271 * _ctl_diag_trigger_scsi_store - store the diag_trigger_scsi attribute 3272 * @cdev: pointer to embedded class device 3273 * @attr: ? 3274 * @buf: the buffer returned 3275 * @count: ? 3276 * 3277 * A sysfs 'read/write' shost attribute. 3278 */ 3279 static ssize_t 3280 _ctl_diag_trigger_scsi_store(struct device *cdev, 3281 struct device_attribute *attr, const char *buf, size_t count) 3282 { 3283 struct Scsi_Host *shost = class_to_shost(cdev); 3284 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 3285 unsigned long flags; 3286 ssize_t sz; 3287 3288 spin_lock_irqsave(&ioc->diag_trigger_lock, flags); 3289 sz = min(sizeof(struct SL_WH_SCSI_TRIGGERS_T), count); 3290 memset(&ioc->diag_trigger_scsi, 0, 3291 sizeof(struct SL_WH_EVENT_TRIGGERS_T)); 3292 memcpy(&ioc->diag_trigger_scsi, buf, sz); 3293 if (ioc->diag_trigger_scsi.ValidEntries > NUM_VALID_ENTRIES) 3294 ioc->diag_trigger_scsi.ValidEntries = NUM_VALID_ENTRIES; 3295 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags); 3296 return sz; 3297 } 3298 static DEVICE_ATTR(diag_trigger_scsi, S_IRUGO | S_IWUSR, 3299 _ctl_diag_trigger_scsi_show, _ctl_diag_trigger_scsi_store); 3300 3301 3302 /** 3303 * _ctl_diag_trigger_scsi_show - show the diag_trigger_mpi attribute 3304 * @cdev: pointer to embedded class device 3305 * @attr: ? 3306 * @buf: the buffer returned 3307 * 3308 * A sysfs 'read/write' shost attribute. 3309 */ 3310 static ssize_t 3311 _ctl_diag_trigger_mpi_show(struct device *cdev, 3312 struct device_attribute *attr, char *buf) 3313 { 3314 struct Scsi_Host *shost = class_to_shost(cdev); 3315 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 3316 unsigned long flags; 3317 ssize_t rc; 3318 3319 spin_lock_irqsave(&ioc->diag_trigger_lock, flags); 3320 rc = sizeof(struct SL_WH_MPI_TRIGGERS_T); 3321 memcpy(buf, &ioc->diag_trigger_mpi, rc); 3322 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags); 3323 return rc; 3324 } 3325 3326 /** 3327 * _ctl_diag_trigger_mpi_store - store the diag_trigger_mpi attribute 3328 * @cdev: pointer to embedded class device 3329 * @attr: ? 3330 * @buf: the buffer returned 3331 * @count: ? 3332 * 3333 * A sysfs 'read/write' shost attribute. 3334 */ 3335 static ssize_t 3336 _ctl_diag_trigger_mpi_store(struct device *cdev, 3337 struct device_attribute *attr, const char *buf, size_t count) 3338 { 3339 struct Scsi_Host *shost = class_to_shost(cdev); 3340 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 3341 unsigned long flags; 3342 ssize_t sz; 3343 3344 spin_lock_irqsave(&ioc->diag_trigger_lock, flags); 3345 sz = min(sizeof(struct SL_WH_MPI_TRIGGERS_T), count); 3346 memset(&ioc->diag_trigger_mpi, 0, 3347 sizeof(ioc->diag_trigger_mpi)); 3348 memcpy(&ioc->diag_trigger_mpi, buf, sz); 3349 if (ioc->diag_trigger_mpi.ValidEntries > NUM_VALID_ENTRIES) 3350 ioc->diag_trigger_mpi.ValidEntries = NUM_VALID_ENTRIES; 3351 spin_unlock_irqrestore(&ioc->diag_trigger_lock, flags); 3352 return sz; 3353 } 3354 3355 static DEVICE_ATTR(diag_trigger_mpi, S_IRUGO | S_IWUSR, 3356 _ctl_diag_trigger_mpi_show, _ctl_diag_trigger_mpi_store); 3357 3358 /*********** diagnostic trigger suppport *** END ****************************/ 3359 3360 /*****************************************/ 3361 3362 struct device_attribute *mpt3sas_host_attrs[] = { 3363 &dev_attr_version_fw, 3364 &dev_attr_version_bios, 3365 &dev_attr_version_mpi, 3366 &dev_attr_version_product, 3367 &dev_attr_version_nvdata_persistent, 3368 &dev_attr_version_nvdata_default, 3369 &dev_attr_board_name, 3370 &dev_attr_board_assembly, 3371 &dev_attr_board_tracer, 3372 &dev_attr_io_delay, 3373 &dev_attr_device_delay, 3374 &dev_attr_logging_level, 3375 &dev_attr_fwfault_debug, 3376 &dev_attr_fw_queue_depth, 3377 &dev_attr_host_sas_address, 3378 &dev_attr_ioc_reset_count, 3379 &dev_attr_host_trace_buffer_size, 3380 &dev_attr_host_trace_buffer, 3381 &dev_attr_host_trace_buffer_enable, 3382 &dev_attr_reply_queue_count, 3383 &dev_attr_diag_trigger_master, 3384 &dev_attr_diag_trigger_event, 3385 &dev_attr_diag_trigger_scsi, 3386 &dev_attr_diag_trigger_mpi, 3387 &dev_attr_BRM_status, 3388 NULL, 3389 }; 3390 3391 /* device attributes */ 3392 3393 /** 3394 * _ctl_device_sas_address_show - sas address 3395 * @dev: pointer to embedded class device 3396 * @attr: ? 3397 * @buf: the buffer returned 3398 * 3399 * This is the sas address for the target 3400 * 3401 * A sysfs 'read-only' shost attribute. 3402 */ 3403 static ssize_t 3404 _ctl_device_sas_address_show(struct device *dev, struct device_attribute *attr, 3405 char *buf) 3406 { 3407 struct scsi_device *sdev = to_scsi_device(dev); 3408 struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata; 3409 3410 return snprintf(buf, PAGE_SIZE, "0x%016llx\n", 3411 (unsigned long long)sas_device_priv_data->sas_target->sas_address); 3412 } 3413 static DEVICE_ATTR(sas_address, S_IRUGO, _ctl_device_sas_address_show, NULL); 3414 3415 /** 3416 * _ctl_device_handle_show - device handle 3417 * @dev: pointer to embedded class device 3418 * @attr: ? 3419 * @buf: the buffer returned 3420 * 3421 * This is the firmware assigned device handle 3422 * 3423 * A sysfs 'read-only' shost attribute. 3424 */ 3425 static ssize_t 3426 _ctl_device_handle_show(struct device *dev, struct device_attribute *attr, 3427 char *buf) 3428 { 3429 struct scsi_device *sdev = to_scsi_device(dev); 3430 struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata; 3431 3432 return snprintf(buf, PAGE_SIZE, "0x%04x\n", 3433 sas_device_priv_data->sas_target->handle); 3434 } 3435 static DEVICE_ATTR(sas_device_handle, S_IRUGO, _ctl_device_handle_show, NULL); 3436 3437 /** 3438 * _ctl_device_ncq_io_prio_show - send prioritized io commands to device 3439 * @dev: pointer to embedded device 3440 * @attr: ? 3441 * @buf: the buffer returned 3442 * 3443 * A sysfs 'read/write' sdev attribute, only works with SATA 3444 */ 3445 static ssize_t 3446 _ctl_device_ncq_prio_enable_show(struct device *dev, 3447 struct device_attribute *attr, char *buf) 3448 { 3449 struct scsi_device *sdev = to_scsi_device(dev); 3450 struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata; 3451 3452 return snprintf(buf, PAGE_SIZE, "%d\n", 3453 sas_device_priv_data->ncq_prio_enable); 3454 } 3455 3456 static ssize_t 3457 _ctl_device_ncq_prio_enable_store(struct device *dev, 3458 struct device_attribute *attr, 3459 const char *buf, size_t count) 3460 { 3461 struct scsi_device *sdev = to_scsi_device(dev); 3462 struct MPT3SAS_DEVICE *sas_device_priv_data = sdev->hostdata; 3463 bool ncq_prio_enable = 0; 3464 3465 if (kstrtobool(buf, &ncq_prio_enable)) 3466 return -EINVAL; 3467 3468 if (!scsih_ncq_prio_supp(sdev)) 3469 return -EINVAL; 3470 3471 sas_device_priv_data->ncq_prio_enable = ncq_prio_enable; 3472 return strlen(buf); 3473 } 3474 static DEVICE_ATTR(sas_ncq_prio_enable, S_IRUGO | S_IWUSR, 3475 _ctl_device_ncq_prio_enable_show, 3476 _ctl_device_ncq_prio_enable_store); 3477 3478 struct device_attribute *mpt3sas_dev_attrs[] = { 3479 &dev_attr_sas_address, 3480 &dev_attr_sas_device_handle, 3481 &dev_attr_sas_ncq_prio_enable, 3482 NULL, 3483 }; 3484 3485 /* file operations table for mpt3ctl device */ 3486 static const struct file_operations ctl_fops = { 3487 .owner = THIS_MODULE, 3488 .unlocked_ioctl = _ctl_ioctl, 3489 .poll = _ctl_poll, 3490 .fasync = _ctl_fasync, 3491 #ifdef CONFIG_COMPAT 3492 .compat_ioctl = _ctl_ioctl_compat, 3493 #endif 3494 }; 3495 3496 /* file operations table for mpt2ctl device */ 3497 static const struct file_operations ctl_gen2_fops = { 3498 .owner = THIS_MODULE, 3499 .unlocked_ioctl = _ctl_mpt2_ioctl, 3500 .poll = _ctl_poll, 3501 .fasync = _ctl_fasync, 3502 #ifdef CONFIG_COMPAT 3503 .compat_ioctl = _ctl_mpt2_ioctl_compat, 3504 #endif 3505 }; 3506 3507 static struct miscdevice ctl_dev = { 3508 .minor = MPT3SAS_MINOR, 3509 .name = MPT3SAS_DEV_NAME, 3510 .fops = &ctl_fops, 3511 }; 3512 3513 static struct miscdevice gen2_ctl_dev = { 3514 .minor = MPT2SAS_MINOR, 3515 .name = MPT2SAS_DEV_NAME, 3516 .fops = &ctl_gen2_fops, 3517 }; 3518 3519 /** 3520 * mpt3sas_ctl_init - main entry point for ctl. 3521 * @hbas_to_enumerate: ? 3522 */ 3523 void 3524 mpt3sas_ctl_init(ushort hbas_to_enumerate) 3525 { 3526 async_queue = NULL; 3527 3528 /* Don't register mpt3ctl ioctl device if 3529 * hbas_to_enumarate is one. 3530 */ 3531 if (hbas_to_enumerate != 1) 3532 if (misc_register(&ctl_dev) < 0) 3533 pr_err("%s can't register misc device [minor=%d]\n", 3534 MPT3SAS_DRIVER_NAME, MPT3SAS_MINOR); 3535 3536 /* Don't register mpt3ctl ioctl device if 3537 * hbas_to_enumarate is two. 3538 */ 3539 if (hbas_to_enumerate != 2) 3540 if (misc_register(&gen2_ctl_dev) < 0) 3541 pr_err("%s can't register misc device [minor=%d]\n", 3542 MPT2SAS_DRIVER_NAME, MPT2SAS_MINOR); 3543 3544 init_waitqueue_head(&ctl_poll_wait); 3545 } 3546 3547 /** 3548 * mpt3sas_ctl_exit - exit point for ctl 3549 * @hbas_to_enumerate: ? 3550 */ 3551 void 3552 mpt3sas_ctl_exit(ushort hbas_to_enumerate) 3553 { 3554 struct MPT3SAS_ADAPTER *ioc; 3555 int i; 3556 3557 list_for_each_entry(ioc, &mpt3sas_ioc_list, list) { 3558 3559 /* free memory associated to diag buffers */ 3560 for (i = 0; i < MPI2_DIAG_BUF_TYPE_COUNT; i++) { 3561 if (!ioc->diag_buffer[i]) 3562 continue; 3563 if (!(ioc->diag_buffer_status[i] & 3564 MPT3_DIAG_BUFFER_IS_REGISTERED)) 3565 continue; 3566 if ((ioc->diag_buffer_status[i] & 3567 MPT3_DIAG_BUFFER_IS_RELEASED)) 3568 continue; 3569 dma_free_coherent(&ioc->pdev->dev, 3570 ioc->diag_buffer_sz[i], 3571 ioc->diag_buffer[i], 3572 ioc->diag_buffer_dma[i]); 3573 ioc->diag_buffer[i] = NULL; 3574 ioc->diag_buffer_status[i] = 0; 3575 } 3576 3577 kfree(ioc->event_log); 3578 } 3579 if (hbas_to_enumerate != 1) 3580 misc_deregister(&ctl_dev); 3581 if (hbas_to_enumerate != 2) 3582 misc_deregister(&gen2_ctl_dev); 3583 } 3584