1 /* 2 * SAS Transport Layer for MPT (Message Passing Technology) based controllers 3 * 4 * This code is based on drivers/scsi/mpt3sas/mpt3sas_transport.c 5 * Copyright (C) 2012-2014 LSI Corporation 6 * Copyright (C) 2013-2014 Avago Technologies 7 * (mailto: MPT-FusionLinux.pdl@avagotech.com) 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License 11 * as published by the Free Software Foundation; either version 2 12 * of the License, or (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * NO WARRANTY 20 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR 21 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT 22 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, 23 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is 24 * solely responsible for determining the appropriateness of using and 25 * distributing the Program and assumes all risks associated with its 26 * exercise of rights under this Agreement, including but not limited to 27 * the risks and costs of program errors, damage to or loss of data, 28 * programs or equipment, and unavailability or interruption of operations. 29 30 * DISCLAIMER OF LIABILITY 31 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY 32 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND 34 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 35 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 36 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED 37 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES 38 39 * You should have received a copy of the GNU General Public License 40 * along with this program; if not, write to the Free Software 41 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 42 * USA. 43 */ 44 45 #include <linux/module.h> 46 #include <linux/kernel.h> 47 #include <linux/init.h> 48 #include <linux/errno.h> 49 #include <linux/sched.h> 50 #include <linux/workqueue.h> 51 #include <linux/delay.h> 52 #include <linux/pci.h> 53 54 #include <scsi/scsi.h> 55 #include <scsi/scsi_cmnd.h> 56 #include <scsi/scsi_device.h> 57 #include <scsi/scsi_host.h> 58 #include <scsi/scsi_transport_sas.h> 59 #include <scsi/scsi_dbg.h> 60 61 #include "mpt3sas_base.h" 62 63 /** 64 * _transport_sas_node_find_by_sas_address - sas node search 65 * @ioc: per adapter object 66 * @sas_address: sas address of expander or sas host 67 * Context: Calling function should acquire ioc->sas_node_lock. 68 * 69 * Search for either hba phys or expander device based on handle, then returns 70 * the sas_node object. 71 */ 72 static struct _sas_node * 73 _transport_sas_node_find_by_sas_address(struct MPT3SAS_ADAPTER *ioc, 74 u64 sas_address) 75 { 76 if (ioc->sas_hba.sas_address == sas_address) 77 return &ioc->sas_hba; 78 else 79 return mpt3sas_scsih_expander_find_by_sas_address(ioc, 80 sas_address); 81 } 82 83 /** 84 * _transport_convert_phy_link_rate - 85 * @link_rate: link rate returned from mpt firmware 86 * 87 * Convert link_rate from mpi fusion into sas_transport form. 88 */ 89 static enum sas_linkrate 90 _transport_convert_phy_link_rate(u8 link_rate) 91 { 92 enum sas_linkrate rc; 93 94 switch (link_rate) { 95 case MPI2_SAS_NEG_LINK_RATE_1_5: 96 rc = SAS_LINK_RATE_1_5_GBPS; 97 break; 98 case MPI2_SAS_NEG_LINK_RATE_3_0: 99 rc = SAS_LINK_RATE_3_0_GBPS; 100 break; 101 case MPI2_SAS_NEG_LINK_RATE_6_0: 102 rc = SAS_LINK_RATE_6_0_GBPS; 103 break; 104 case MPI25_SAS_NEG_LINK_RATE_12_0: 105 rc = SAS_LINK_RATE_12_0_GBPS; 106 break; 107 case MPI2_SAS_NEG_LINK_RATE_PHY_DISABLED: 108 rc = SAS_PHY_DISABLED; 109 break; 110 case MPI2_SAS_NEG_LINK_RATE_NEGOTIATION_FAILED: 111 rc = SAS_LINK_RATE_FAILED; 112 break; 113 case MPI2_SAS_NEG_LINK_RATE_PORT_SELECTOR: 114 rc = SAS_SATA_PORT_SELECTOR; 115 break; 116 case MPI2_SAS_NEG_LINK_RATE_SMP_RESET_IN_PROGRESS: 117 rc = SAS_PHY_RESET_IN_PROGRESS; 118 break; 119 120 default: 121 case MPI2_SAS_NEG_LINK_RATE_SATA_OOB_COMPLETE: 122 case MPI2_SAS_NEG_LINK_RATE_UNKNOWN_LINK_RATE: 123 rc = SAS_LINK_RATE_UNKNOWN; 124 break; 125 } 126 return rc; 127 } 128 129 /** 130 * _transport_set_identify - set identify for phys and end devices 131 * @ioc: per adapter object 132 * @handle: device handle 133 * @identify: sas identify info 134 * 135 * Populates sas identify info. 136 * 137 * Returns 0 for success, non-zero for failure. 138 */ 139 static int 140 _transport_set_identify(struct MPT3SAS_ADAPTER *ioc, u16 handle, 141 struct sas_identify *identify) 142 { 143 Mpi2SasDevicePage0_t sas_device_pg0; 144 Mpi2ConfigReply_t mpi_reply; 145 u32 device_info; 146 u32 ioc_status; 147 148 if (ioc->shost_recovery || ioc->pci_error_recovery) { 149 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n", 150 __func__, ioc->name); 151 return -EFAULT; 152 } 153 154 if ((mpt3sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0, 155 MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) { 156 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 157 ioc->name, __FILE__, __LINE__, __func__); 158 return -ENXIO; 159 } 160 161 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & 162 MPI2_IOCSTATUS_MASK; 163 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) { 164 pr_err(MPT3SAS_FMT 165 "handle(0x%04x), ioc_status(0x%04x)\nfailure at %s:%d/%s()!\n", 166 ioc->name, handle, ioc_status, 167 __FILE__, __LINE__, __func__); 168 return -EIO; 169 } 170 171 memset(identify, 0, sizeof(struct sas_identify)); 172 device_info = le32_to_cpu(sas_device_pg0.DeviceInfo); 173 174 /* sas_address */ 175 identify->sas_address = le64_to_cpu(sas_device_pg0.SASAddress); 176 177 /* phy number of the parent device this device is linked to */ 178 identify->phy_identifier = sas_device_pg0.PhyNum; 179 180 /* device_type */ 181 switch (device_info & MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) { 182 case MPI2_SAS_DEVICE_INFO_NO_DEVICE: 183 identify->device_type = SAS_PHY_UNUSED; 184 break; 185 case MPI2_SAS_DEVICE_INFO_END_DEVICE: 186 identify->device_type = SAS_END_DEVICE; 187 break; 188 case MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER: 189 identify->device_type = SAS_EDGE_EXPANDER_DEVICE; 190 break; 191 case MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER: 192 identify->device_type = SAS_FANOUT_EXPANDER_DEVICE; 193 break; 194 } 195 196 /* initiator_port_protocols */ 197 if (device_info & MPI2_SAS_DEVICE_INFO_SSP_INITIATOR) 198 identify->initiator_port_protocols |= SAS_PROTOCOL_SSP; 199 if (device_info & MPI2_SAS_DEVICE_INFO_STP_INITIATOR) 200 identify->initiator_port_protocols |= SAS_PROTOCOL_STP; 201 if (device_info & MPI2_SAS_DEVICE_INFO_SMP_INITIATOR) 202 identify->initiator_port_protocols |= SAS_PROTOCOL_SMP; 203 if (device_info & MPI2_SAS_DEVICE_INFO_SATA_HOST) 204 identify->initiator_port_protocols |= SAS_PROTOCOL_SATA; 205 206 /* target_port_protocols */ 207 if (device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET) 208 identify->target_port_protocols |= SAS_PROTOCOL_SSP; 209 if (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET) 210 identify->target_port_protocols |= SAS_PROTOCOL_STP; 211 if (device_info & MPI2_SAS_DEVICE_INFO_SMP_TARGET) 212 identify->target_port_protocols |= SAS_PROTOCOL_SMP; 213 if (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE) 214 identify->target_port_protocols |= SAS_PROTOCOL_SATA; 215 216 return 0; 217 } 218 219 /** 220 * mpt3sas_transport_done - internal transport layer callback handler. 221 * @ioc: per adapter object 222 * @smid: system request message index 223 * @msix_index: MSIX table index supplied by the OS 224 * @reply: reply message frame(lower 32bit addr) 225 * 226 * Callback handler when sending internal generated transport cmds. 227 * The callback index passed is `ioc->transport_cb_idx` 228 * 229 * Return 1 meaning mf should be freed from _base_interrupt 230 * 0 means the mf is freed from this function. 231 */ 232 u8 233 mpt3sas_transport_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, 234 u32 reply) 235 { 236 MPI2DefaultReply_t *mpi_reply; 237 238 mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply); 239 if (ioc->transport_cmds.status == MPT3_CMD_NOT_USED) 240 return 1; 241 if (ioc->transport_cmds.smid != smid) 242 return 1; 243 ioc->transport_cmds.status |= MPT3_CMD_COMPLETE; 244 if (mpi_reply) { 245 memcpy(ioc->transport_cmds.reply, mpi_reply, 246 mpi_reply->MsgLength*4); 247 ioc->transport_cmds.status |= MPT3_CMD_REPLY_VALID; 248 } 249 ioc->transport_cmds.status &= ~MPT3_CMD_PENDING; 250 complete(&ioc->transport_cmds.done); 251 return 1; 252 } 253 254 /* report manufacture request structure */ 255 struct rep_manu_request { 256 u8 smp_frame_type; 257 u8 function; 258 u8 reserved; 259 u8 request_length; 260 }; 261 262 /* report manufacture reply structure */ 263 struct rep_manu_reply { 264 u8 smp_frame_type; /* 0x41 */ 265 u8 function; /* 0x01 */ 266 u8 function_result; 267 u8 response_length; 268 u16 expander_change_count; 269 u8 reserved0[2]; 270 u8 sas_format; 271 u8 reserved2[3]; 272 u8 vendor_id[SAS_EXPANDER_VENDOR_ID_LEN]; 273 u8 product_id[SAS_EXPANDER_PRODUCT_ID_LEN]; 274 u8 product_rev[SAS_EXPANDER_PRODUCT_REV_LEN]; 275 u8 component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN]; 276 u16 component_id; 277 u8 component_revision_id; 278 u8 reserved3; 279 u8 vendor_specific[8]; 280 }; 281 282 /** 283 * transport_expander_report_manufacture - obtain SMP report_manufacture 284 * @ioc: per adapter object 285 * @sas_address: expander sas address 286 * @edev: the sas_expander_device object 287 * 288 * Fills in the sas_expander_device object when SMP port is created. 289 * 290 * Returns 0 for success, non-zero for failure. 291 */ 292 static int 293 _transport_expander_report_manufacture(struct MPT3SAS_ADAPTER *ioc, 294 u64 sas_address, struct sas_expander_device *edev) 295 { 296 Mpi2SmpPassthroughRequest_t *mpi_request; 297 Mpi2SmpPassthroughReply_t *mpi_reply; 298 struct rep_manu_reply *manufacture_reply; 299 struct rep_manu_request *manufacture_request; 300 int rc; 301 u16 smid; 302 u32 ioc_state; 303 void *psge; 304 u8 issue_reset = 0; 305 void *data_out = NULL; 306 dma_addr_t data_out_dma; 307 dma_addr_t data_in_dma; 308 size_t data_in_sz; 309 size_t data_out_sz; 310 u16 wait_state_count; 311 312 if (ioc->shost_recovery || ioc->pci_error_recovery) { 313 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n", 314 __func__, ioc->name); 315 return -EFAULT; 316 } 317 318 mutex_lock(&ioc->transport_cmds.mutex); 319 320 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) { 321 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n", 322 ioc->name, __func__); 323 rc = -EAGAIN; 324 goto out; 325 } 326 ioc->transport_cmds.status = MPT3_CMD_PENDING; 327 328 wait_state_count = 0; 329 ioc_state = mpt3sas_base_get_iocstate(ioc, 1); 330 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) { 331 if (wait_state_count++ == 10) { 332 pr_err(MPT3SAS_FMT 333 "%s: failed due to ioc not operational\n", 334 ioc->name, __func__); 335 rc = -EFAULT; 336 goto out; 337 } 338 ssleep(1); 339 ioc_state = mpt3sas_base_get_iocstate(ioc, 1); 340 pr_info(MPT3SAS_FMT 341 "%s: waiting for operational state(count=%d)\n", 342 ioc->name, __func__, wait_state_count); 343 } 344 if (wait_state_count) 345 pr_info(MPT3SAS_FMT "%s: ioc is operational\n", 346 ioc->name, __func__); 347 348 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx); 349 if (!smid) { 350 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n", 351 ioc->name, __func__); 352 rc = -EAGAIN; 353 goto out; 354 } 355 356 rc = 0; 357 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); 358 ioc->transport_cmds.smid = smid; 359 360 data_out_sz = sizeof(struct rep_manu_request); 361 data_in_sz = sizeof(struct rep_manu_reply); 362 data_out = pci_alloc_consistent(ioc->pdev, data_out_sz + data_in_sz, 363 &data_out_dma); 364 365 if (!data_out) { 366 pr_err("failure at %s:%d/%s()!\n", __FILE__, 367 __LINE__, __func__); 368 rc = -ENOMEM; 369 mpt3sas_base_free_smid(ioc, smid); 370 goto out; 371 } 372 373 data_in_dma = data_out_dma + sizeof(struct rep_manu_request); 374 375 manufacture_request = data_out; 376 manufacture_request->smp_frame_type = 0x40; 377 manufacture_request->function = 1; 378 manufacture_request->reserved = 0; 379 manufacture_request->request_length = 0; 380 381 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t)); 382 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH; 383 mpi_request->PhysicalPort = 0xFF; 384 mpi_request->SASAddress = cpu_to_le64(sas_address); 385 mpi_request->RequestDataLength = cpu_to_le16(data_out_sz); 386 psge = &mpi_request->SGL; 387 388 ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma, 389 data_in_sz); 390 391 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 392 "report_manufacture - send to sas_addr(0x%016llx)\n", 393 ioc->name, (unsigned long long)sas_address)); 394 init_completion(&ioc->transport_cmds.done); 395 ioc->put_smid_default(ioc, smid); 396 wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ); 397 398 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) { 399 pr_err(MPT3SAS_FMT "%s: timeout\n", 400 ioc->name, __func__); 401 _debug_dump_mf(mpi_request, 402 sizeof(Mpi2SmpPassthroughRequest_t)/4); 403 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET)) 404 issue_reset = 1; 405 goto issue_host_reset; 406 } 407 408 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 409 "report_manufacture - complete\n", ioc->name)); 410 411 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) { 412 u8 *tmp; 413 414 mpi_reply = ioc->transport_cmds.reply; 415 416 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 417 "report_manufacture - reply data transfer size(%d)\n", 418 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength))); 419 420 if (le16_to_cpu(mpi_reply->ResponseDataLength) != 421 sizeof(struct rep_manu_reply)) 422 goto out; 423 424 manufacture_reply = data_out + sizeof(struct rep_manu_request); 425 strncpy(edev->vendor_id, manufacture_reply->vendor_id, 426 SAS_EXPANDER_VENDOR_ID_LEN); 427 strncpy(edev->product_id, manufacture_reply->product_id, 428 SAS_EXPANDER_PRODUCT_ID_LEN); 429 strncpy(edev->product_rev, manufacture_reply->product_rev, 430 SAS_EXPANDER_PRODUCT_REV_LEN); 431 edev->level = manufacture_reply->sas_format & 1; 432 if (edev->level) { 433 strncpy(edev->component_vendor_id, 434 manufacture_reply->component_vendor_id, 435 SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN); 436 tmp = (u8 *)&manufacture_reply->component_id; 437 edev->component_id = tmp[0] << 8 | tmp[1]; 438 edev->component_revision_id = 439 manufacture_reply->component_revision_id; 440 } 441 } else 442 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 443 "report_manufacture - no reply\n", ioc->name)); 444 445 issue_host_reset: 446 if (issue_reset) 447 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); 448 out: 449 ioc->transport_cmds.status = MPT3_CMD_NOT_USED; 450 if (data_out) 451 pci_free_consistent(ioc->pdev, data_out_sz + data_in_sz, 452 data_out, data_out_dma); 453 454 mutex_unlock(&ioc->transport_cmds.mutex); 455 return rc; 456 } 457 458 459 /** 460 * _transport_delete_port - helper function to removing a port 461 * @ioc: per adapter object 462 * @mpt3sas_port: mpt3sas per port object 463 * 464 * Returns nothing. 465 */ 466 static void 467 _transport_delete_port(struct MPT3SAS_ADAPTER *ioc, 468 struct _sas_port *mpt3sas_port) 469 { 470 u64 sas_address = mpt3sas_port->remote_identify.sas_address; 471 enum sas_device_type device_type = 472 mpt3sas_port->remote_identify.device_type; 473 474 dev_printk(KERN_INFO, &mpt3sas_port->port->dev, 475 "remove: sas_addr(0x%016llx)\n", 476 (unsigned long long) sas_address); 477 478 ioc->logging_level |= MPT_DEBUG_TRANSPORT; 479 if (device_type == SAS_END_DEVICE) 480 mpt3sas_device_remove_by_sas_address(ioc, sas_address); 481 else if (device_type == SAS_EDGE_EXPANDER_DEVICE || 482 device_type == SAS_FANOUT_EXPANDER_DEVICE) 483 mpt3sas_expander_remove(ioc, sas_address); 484 ioc->logging_level &= ~MPT_DEBUG_TRANSPORT; 485 } 486 487 /** 488 * _transport_delete_phy - helper function to removing single phy from port 489 * @ioc: per adapter object 490 * @mpt3sas_port: mpt3sas per port object 491 * @mpt3sas_phy: mpt3sas per phy object 492 * 493 * Returns nothing. 494 */ 495 static void 496 _transport_delete_phy(struct MPT3SAS_ADAPTER *ioc, 497 struct _sas_port *mpt3sas_port, struct _sas_phy *mpt3sas_phy) 498 { 499 u64 sas_address = mpt3sas_port->remote_identify.sas_address; 500 501 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev, 502 "remove: sas_addr(0x%016llx), phy(%d)\n", 503 (unsigned long long) sas_address, mpt3sas_phy->phy_id); 504 505 list_del(&mpt3sas_phy->port_siblings); 506 mpt3sas_port->num_phys--; 507 sas_port_delete_phy(mpt3sas_port->port, mpt3sas_phy->phy); 508 mpt3sas_phy->phy_belongs_to_port = 0; 509 } 510 511 /** 512 * _transport_add_phy - helper function to adding single phy to port 513 * @ioc: per adapter object 514 * @mpt3sas_port: mpt3sas per port object 515 * @mpt3sas_phy: mpt3sas per phy object 516 * 517 * Returns nothing. 518 */ 519 static void 520 _transport_add_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_port *mpt3sas_port, 521 struct _sas_phy *mpt3sas_phy) 522 { 523 u64 sas_address = mpt3sas_port->remote_identify.sas_address; 524 525 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev, 526 "add: sas_addr(0x%016llx), phy(%d)\n", (unsigned long long) 527 sas_address, mpt3sas_phy->phy_id); 528 529 list_add_tail(&mpt3sas_phy->port_siblings, &mpt3sas_port->phy_list); 530 mpt3sas_port->num_phys++; 531 sas_port_add_phy(mpt3sas_port->port, mpt3sas_phy->phy); 532 mpt3sas_phy->phy_belongs_to_port = 1; 533 } 534 535 /** 536 * _transport_add_phy_to_an_existing_port - adding new phy to existing port 537 * @ioc: per adapter object 538 * @sas_node: sas node object (either expander or sas host) 539 * @mpt3sas_phy: mpt3sas per phy object 540 * @sas_address: sas address of device/expander were phy needs to be added to 541 * 542 * Returns nothing. 543 */ 544 static void 545 _transport_add_phy_to_an_existing_port(struct MPT3SAS_ADAPTER *ioc, 546 struct _sas_node *sas_node, struct _sas_phy *mpt3sas_phy, 547 u64 sas_address) 548 { 549 struct _sas_port *mpt3sas_port; 550 struct _sas_phy *phy_srch; 551 552 if (mpt3sas_phy->phy_belongs_to_port == 1) 553 return; 554 555 list_for_each_entry(mpt3sas_port, &sas_node->sas_port_list, 556 port_list) { 557 if (mpt3sas_port->remote_identify.sas_address != 558 sas_address) 559 continue; 560 list_for_each_entry(phy_srch, &mpt3sas_port->phy_list, 561 port_siblings) { 562 if (phy_srch == mpt3sas_phy) 563 return; 564 } 565 _transport_add_phy(ioc, mpt3sas_port, mpt3sas_phy); 566 return; 567 } 568 569 } 570 571 /** 572 * _transport_del_phy_from_an_existing_port - delete phy from existing port 573 * @ioc: per adapter object 574 * @sas_node: sas node object (either expander or sas host) 575 * @mpt3sas_phy: mpt3sas per phy object 576 * 577 * Returns nothing. 578 */ 579 static void 580 _transport_del_phy_from_an_existing_port(struct MPT3SAS_ADAPTER *ioc, 581 struct _sas_node *sas_node, struct _sas_phy *mpt3sas_phy) 582 { 583 struct _sas_port *mpt3sas_port, *next; 584 struct _sas_phy *phy_srch; 585 586 if (mpt3sas_phy->phy_belongs_to_port == 0) 587 return; 588 589 list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list, 590 port_list) { 591 list_for_each_entry(phy_srch, &mpt3sas_port->phy_list, 592 port_siblings) { 593 if (phy_srch != mpt3sas_phy) 594 continue; 595 596 if (mpt3sas_port->num_phys == 1) 597 _transport_delete_port(ioc, mpt3sas_port); 598 else 599 _transport_delete_phy(ioc, mpt3sas_port, 600 mpt3sas_phy); 601 return; 602 } 603 } 604 } 605 606 /** 607 * _transport_sanity_check - sanity check when adding a new port 608 * @ioc: per adapter object 609 * @sas_node: sas node object (either expander or sas host) 610 * @sas_address: sas address of device being added 611 * 612 * See the explanation above from _transport_delete_duplicate_port 613 */ 614 static void 615 _transport_sanity_check(struct MPT3SAS_ADAPTER *ioc, struct _sas_node *sas_node, 616 u64 sas_address) 617 { 618 int i; 619 620 for (i = 0; i < sas_node->num_phys; i++) { 621 if (sas_node->phy[i].remote_identify.sas_address != sas_address) 622 continue; 623 if (sas_node->phy[i].phy_belongs_to_port == 1) 624 _transport_del_phy_from_an_existing_port(ioc, sas_node, 625 &sas_node->phy[i]); 626 } 627 } 628 629 /** 630 * mpt3sas_transport_port_add - insert port to the list 631 * @ioc: per adapter object 632 * @handle: handle of attached device 633 * @sas_address: sas address of parent expander or sas host 634 * Context: This function will acquire ioc->sas_node_lock. 635 * 636 * Adding new port object to the sas_node->sas_port_list. 637 * 638 * Returns mpt3sas_port. 639 */ 640 struct _sas_port * 641 mpt3sas_transport_port_add(struct MPT3SAS_ADAPTER *ioc, u16 handle, 642 u64 sas_address) 643 { 644 struct _sas_phy *mpt3sas_phy, *next; 645 struct _sas_port *mpt3sas_port; 646 unsigned long flags; 647 struct _sas_node *sas_node; 648 struct sas_rphy *rphy; 649 struct _sas_device *sas_device = NULL; 650 int i; 651 struct sas_port *port; 652 653 mpt3sas_port = kzalloc(sizeof(struct _sas_port), 654 GFP_KERNEL); 655 if (!mpt3sas_port) { 656 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 657 ioc->name, __FILE__, __LINE__, __func__); 658 return NULL; 659 } 660 661 INIT_LIST_HEAD(&mpt3sas_port->port_list); 662 INIT_LIST_HEAD(&mpt3sas_port->phy_list); 663 spin_lock_irqsave(&ioc->sas_node_lock, flags); 664 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address); 665 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 666 667 if (!sas_node) { 668 pr_err(MPT3SAS_FMT 669 "%s: Could not find parent sas_address(0x%016llx)!\n", 670 ioc->name, __func__, (unsigned long long)sas_address); 671 goto out_fail; 672 } 673 674 if ((_transport_set_identify(ioc, handle, 675 &mpt3sas_port->remote_identify))) { 676 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 677 ioc->name, __FILE__, __LINE__, __func__); 678 goto out_fail; 679 } 680 681 if (mpt3sas_port->remote_identify.device_type == SAS_PHY_UNUSED) { 682 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 683 ioc->name, __FILE__, __LINE__, __func__); 684 goto out_fail; 685 } 686 687 _transport_sanity_check(ioc, sas_node, 688 mpt3sas_port->remote_identify.sas_address); 689 690 for (i = 0; i < sas_node->num_phys; i++) { 691 if (sas_node->phy[i].remote_identify.sas_address != 692 mpt3sas_port->remote_identify.sas_address) 693 continue; 694 list_add_tail(&sas_node->phy[i].port_siblings, 695 &mpt3sas_port->phy_list); 696 mpt3sas_port->num_phys++; 697 } 698 699 if (!mpt3sas_port->num_phys) { 700 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 701 ioc->name, __FILE__, __LINE__, __func__); 702 goto out_fail; 703 } 704 705 if (!sas_node->parent_dev) { 706 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 707 ioc->name, __FILE__, __LINE__, __func__); 708 goto out_fail; 709 } 710 port = sas_port_alloc_num(sas_node->parent_dev); 711 if ((sas_port_add(port))) { 712 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 713 ioc->name, __FILE__, __LINE__, __func__); 714 goto out_fail; 715 } 716 717 list_for_each_entry(mpt3sas_phy, &mpt3sas_port->phy_list, 718 port_siblings) { 719 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT)) 720 dev_printk(KERN_INFO, &port->dev, 721 "add: handle(0x%04x), sas_addr(0x%016llx), phy(%d)\n", 722 handle, (unsigned long long) 723 mpt3sas_port->remote_identify.sas_address, 724 mpt3sas_phy->phy_id); 725 sas_port_add_phy(port, mpt3sas_phy->phy); 726 mpt3sas_phy->phy_belongs_to_port = 1; 727 } 728 729 mpt3sas_port->port = port; 730 if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) 731 rphy = sas_end_device_alloc(port); 732 else 733 rphy = sas_expander_alloc(port, 734 mpt3sas_port->remote_identify.device_type); 735 736 rphy->identify = mpt3sas_port->remote_identify; 737 738 if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) { 739 sas_device = mpt3sas_get_sdev_by_addr(ioc, 740 mpt3sas_port->remote_identify.sas_address); 741 if (!sas_device) { 742 dfailprintk(ioc, printk(MPT3SAS_FMT 743 "failure at %s:%d/%s()!\n", 744 ioc->name, __FILE__, __LINE__, __func__)); 745 goto out_fail; 746 } 747 sas_device->pend_sas_rphy_add = 1; 748 } 749 750 if ((sas_rphy_add(rphy))) { 751 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 752 ioc->name, __FILE__, __LINE__, __func__); 753 } 754 755 if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) { 756 sas_device->pend_sas_rphy_add = 0; 757 sas_device_put(sas_device); 758 } 759 760 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT)) 761 dev_printk(KERN_INFO, &rphy->dev, 762 "add: handle(0x%04x), sas_addr(0x%016llx)\n", 763 handle, (unsigned long long) 764 mpt3sas_port->remote_identify.sas_address); 765 mpt3sas_port->rphy = rphy; 766 spin_lock_irqsave(&ioc->sas_node_lock, flags); 767 list_add_tail(&mpt3sas_port->port_list, &sas_node->sas_port_list); 768 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 769 770 /* fill in report manufacture */ 771 if (mpt3sas_port->remote_identify.device_type == 772 MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER || 773 mpt3sas_port->remote_identify.device_type == 774 MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER) 775 _transport_expander_report_manufacture(ioc, 776 mpt3sas_port->remote_identify.sas_address, 777 rphy_to_expander_device(rphy)); 778 return mpt3sas_port; 779 780 out_fail: 781 list_for_each_entry_safe(mpt3sas_phy, next, &mpt3sas_port->phy_list, 782 port_siblings) 783 list_del(&mpt3sas_phy->port_siblings); 784 kfree(mpt3sas_port); 785 return NULL; 786 } 787 788 /** 789 * mpt3sas_transport_port_remove - remove port from the list 790 * @ioc: per adapter object 791 * @sas_address: sas address of attached device 792 * @sas_address_parent: sas address of parent expander or sas host 793 * Context: This function will acquire ioc->sas_node_lock. 794 * 795 * Removing object and freeing associated memory from the 796 * ioc->sas_port_list. 797 * 798 * Return nothing. 799 */ 800 void 801 mpt3sas_transport_port_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address, 802 u64 sas_address_parent) 803 { 804 int i; 805 unsigned long flags; 806 struct _sas_port *mpt3sas_port, *next; 807 struct _sas_node *sas_node; 808 u8 found = 0; 809 struct _sas_phy *mpt3sas_phy, *next_phy; 810 811 spin_lock_irqsave(&ioc->sas_node_lock, flags); 812 sas_node = _transport_sas_node_find_by_sas_address(ioc, 813 sas_address_parent); 814 if (!sas_node) { 815 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 816 return; 817 } 818 list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list, 819 port_list) { 820 if (mpt3sas_port->remote_identify.sas_address != sas_address) 821 continue; 822 found = 1; 823 list_del(&mpt3sas_port->port_list); 824 goto out; 825 } 826 out: 827 if (!found) { 828 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 829 return; 830 } 831 832 for (i = 0; i < sas_node->num_phys; i++) { 833 if (sas_node->phy[i].remote_identify.sas_address == sas_address) 834 memset(&sas_node->phy[i].remote_identify, 0 , 835 sizeof(struct sas_identify)); 836 } 837 838 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 839 840 list_for_each_entry_safe(mpt3sas_phy, next_phy, 841 &mpt3sas_port->phy_list, port_siblings) { 842 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT)) 843 dev_printk(KERN_INFO, &mpt3sas_port->port->dev, 844 "remove: sas_addr(0x%016llx), phy(%d)\n", 845 (unsigned long long) 846 mpt3sas_port->remote_identify.sas_address, 847 mpt3sas_phy->phy_id); 848 mpt3sas_phy->phy_belongs_to_port = 0; 849 sas_port_delete_phy(mpt3sas_port->port, mpt3sas_phy->phy); 850 list_del(&mpt3sas_phy->port_siblings); 851 } 852 sas_port_delete(mpt3sas_port->port); 853 kfree(mpt3sas_port); 854 } 855 856 /** 857 * mpt3sas_transport_add_host_phy - report sas_host phy to transport 858 * @ioc: per adapter object 859 * @mpt3sas_phy: mpt3sas per phy object 860 * @phy_pg0: sas phy page 0 861 * @parent_dev: parent device class object 862 * 863 * Returns 0 for success, non-zero for failure. 864 */ 865 int 866 mpt3sas_transport_add_host_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy 867 *mpt3sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev) 868 { 869 struct sas_phy *phy; 870 int phy_index = mpt3sas_phy->phy_id; 871 872 873 INIT_LIST_HEAD(&mpt3sas_phy->port_siblings); 874 phy = sas_phy_alloc(parent_dev, phy_index); 875 if (!phy) { 876 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 877 ioc->name, __FILE__, __LINE__, __func__); 878 return -1; 879 } 880 if ((_transport_set_identify(ioc, mpt3sas_phy->handle, 881 &mpt3sas_phy->identify))) { 882 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 883 ioc->name, __FILE__, __LINE__, __func__); 884 sas_phy_free(phy); 885 return -1; 886 } 887 phy->identify = mpt3sas_phy->identify; 888 mpt3sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle); 889 if (mpt3sas_phy->attached_handle) 890 _transport_set_identify(ioc, mpt3sas_phy->attached_handle, 891 &mpt3sas_phy->remote_identify); 892 phy->identify.phy_identifier = mpt3sas_phy->phy_id; 893 phy->negotiated_linkrate = _transport_convert_phy_link_rate( 894 phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL); 895 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate( 896 phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK); 897 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate( 898 phy_pg0.HwLinkRate >> 4); 899 phy->minimum_linkrate = _transport_convert_phy_link_rate( 900 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK); 901 phy->maximum_linkrate = _transport_convert_phy_link_rate( 902 phy_pg0.ProgrammedLinkRate >> 4); 903 904 if ((sas_phy_add(phy))) { 905 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 906 ioc->name, __FILE__, __LINE__, __func__); 907 sas_phy_free(phy); 908 return -1; 909 } 910 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT)) 911 dev_printk(KERN_INFO, &phy->dev, 912 "add: handle(0x%04x), sas_addr(0x%016llx)\n" 913 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n", 914 mpt3sas_phy->handle, (unsigned long long) 915 mpt3sas_phy->identify.sas_address, 916 mpt3sas_phy->attached_handle, 917 (unsigned long long) 918 mpt3sas_phy->remote_identify.sas_address); 919 mpt3sas_phy->phy = phy; 920 return 0; 921 } 922 923 924 /** 925 * mpt3sas_transport_add_expander_phy - report expander phy to transport 926 * @ioc: per adapter object 927 * @mpt3sas_phy: mpt3sas per phy object 928 * @expander_pg1: expander page 1 929 * @parent_dev: parent device class object 930 * 931 * Returns 0 for success, non-zero for failure. 932 */ 933 int 934 mpt3sas_transport_add_expander_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy 935 *mpt3sas_phy, Mpi2ExpanderPage1_t expander_pg1, 936 struct device *parent_dev) 937 { 938 struct sas_phy *phy; 939 int phy_index = mpt3sas_phy->phy_id; 940 941 INIT_LIST_HEAD(&mpt3sas_phy->port_siblings); 942 phy = sas_phy_alloc(parent_dev, phy_index); 943 if (!phy) { 944 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 945 ioc->name, __FILE__, __LINE__, __func__); 946 return -1; 947 } 948 if ((_transport_set_identify(ioc, mpt3sas_phy->handle, 949 &mpt3sas_phy->identify))) { 950 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 951 ioc->name, __FILE__, __LINE__, __func__); 952 sas_phy_free(phy); 953 return -1; 954 } 955 phy->identify = mpt3sas_phy->identify; 956 mpt3sas_phy->attached_handle = 957 le16_to_cpu(expander_pg1.AttachedDevHandle); 958 if (mpt3sas_phy->attached_handle) 959 _transport_set_identify(ioc, mpt3sas_phy->attached_handle, 960 &mpt3sas_phy->remote_identify); 961 phy->identify.phy_identifier = mpt3sas_phy->phy_id; 962 phy->negotiated_linkrate = _transport_convert_phy_link_rate( 963 expander_pg1.NegotiatedLinkRate & 964 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL); 965 phy->minimum_linkrate_hw = _transport_convert_phy_link_rate( 966 expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK); 967 phy->maximum_linkrate_hw = _transport_convert_phy_link_rate( 968 expander_pg1.HwLinkRate >> 4); 969 phy->minimum_linkrate = _transport_convert_phy_link_rate( 970 expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK); 971 phy->maximum_linkrate = _transport_convert_phy_link_rate( 972 expander_pg1.ProgrammedLinkRate >> 4); 973 974 if ((sas_phy_add(phy))) { 975 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 976 ioc->name, __FILE__, __LINE__, __func__); 977 sas_phy_free(phy); 978 return -1; 979 } 980 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT)) 981 dev_printk(KERN_INFO, &phy->dev, 982 "add: handle(0x%04x), sas_addr(0x%016llx)\n" 983 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n", 984 mpt3sas_phy->handle, (unsigned long long) 985 mpt3sas_phy->identify.sas_address, 986 mpt3sas_phy->attached_handle, 987 (unsigned long long) 988 mpt3sas_phy->remote_identify.sas_address); 989 mpt3sas_phy->phy = phy; 990 return 0; 991 } 992 993 /** 994 * mpt3sas_transport_update_links - refreshing phy link changes 995 * @ioc: per adapter object 996 * @sas_address: sas address of parent expander or sas host 997 * @handle: attached device handle 998 * @phy_numberv: phy number 999 * @link_rate: new link rate 1000 * 1001 * Returns nothing. 1002 */ 1003 void 1004 mpt3sas_transport_update_links(struct MPT3SAS_ADAPTER *ioc, 1005 u64 sas_address, u16 handle, u8 phy_number, u8 link_rate) 1006 { 1007 unsigned long flags; 1008 struct _sas_node *sas_node; 1009 struct _sas_phy *mpt3sas_phy; 1010 1011 if (ioc->shost_recovery || ioc->pci_error_recovery) 1012 return; 1013 1014 spin_lock_irqsave(&ioc->sas_node_lock, flags); 1015 sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address); 1016 if (!sas_node) { 1017 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 1018 return; 1019 } 1020 1021 mpt3sas_phy = &sas_node->phy[phy_number]; 1022 mpt3sas_phy->attached_handle = handle; 1023 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 1024 if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) { 1025 _transport_set_identify(ioc, handle, 1026 &mpt3sas_phy->remote_identify); 1027 _transport_add_phy_to_an_existing_port(ioc, sas_node, 1028 mpt3sas_phy, mpt3sas_phy->remote_identify.sas_address); 1029 } else 1030 memset(&mpt3sas_phy->remote_identify, 0 , sizeof(struct 1031 sas_identify)); 1032 1033 if (mpt3sas_phy->phy) 1034 mpt3sas_phy->phy->negotiated_linkrate = 1035 _transport_convert_phy_link_rate(link_rate); 1036 1037 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT)) 1038 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev, 1039 "refresh: parent sas_addr(0x%016llx),\n" 1040 "\tlink_rate(0x%02x), phy(%d)\n" 1041 "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n", 1042 (unsigned long long)sas_address, 1043 link_rate, phy_number, handle, (unsigned long long) 1044 mpt3sas_phy->remote_identify.sas_address); 1045 } 1046 1047 static inline void * 1048 phy_to_ioc(struct sas_phy *phy) 1049 { 1050 struct Scsi_Host *shost = dev_to_shost(phy->dev.parent); 1051 return shost_priv(shost); 1052 } 1053 1054 static inline void * 1055 rphy_to_ioc(struct sas_rphy *rphy) 1056 { 1057 struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent); 1058 return shost_priv(shost); 1059 } 1060 1061 /* report phy error log structure */ 1062 struct phy_error_log_request { 1063 u8 smp_frame_type; /* 0x40 */ 1064 u8 function; /* 0x11 */ 1065 u8 allocated_response_length; 1066 u8 request_length; /* 02 */ 1067 u8 reserved_1[5]; 1068 u8 phy_identifier; 1069 u8 reserved_2[2]; 1070 }; 1071 1072 /* report phy error log reply structure */ 1073 struct phy_error_log_reply { 1074 u8 smp_frame_type; /* 0x41 */ 1075 u8 function; /* 0x11 */ 1076 u8 function_result; 1077 u8 response_length; 1078 __be16 expander_change_count; 1079 u8 reserved_1[3]; 1080 u8 phy_identifier; 1081 u8 reserved_2[2]; 1082 __be32 invalid_dword; 1083 __be32 running_disparity_error; 1084 __be32 loss_of_dword_sync; 1085 __be32 phy_reset_problem; 1086 }; 1087 1088 /** 1089 * _transport_get_expander_phy_error_log - return expander counters 1090 * @ioc: per adapter object 1091 * @phy: The sas phy object 1092 * 1093 * Returns 0 for success, non-zero for failure. 1094 * 1095 */ 1096 static int 1097 _transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER *ioc, 1098 struct sas_phy *phy) 1099 { 1100 Mpi2SmpPassthroughRequest_t *mpi_request; 1101 Mpi2SmpPassthroughReply_t *mpi_reply; 1102 struct phy_error_log_request *phy_error_log_request; 1103 struct phy_error_log_reply *phy_error_log_reply; 1104 int rc; 1105 u16 smid; 1106 u32 ioc_state; 1107 void *psge; 1108 u8 issue_reset = 0; 1109 void *data_out = NULL; 1110 dma_addr_t data_out_dma; 1111 u32 sz; 1112 u16 wait_state_count; 1113 1114 if (ioc->shost_recovery || ioc->pci_error_recovery) { 1115 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n", 1116 __func__, ioc->name); 1117 return -EFAULT; 1118 } 1119 1120 mutex_lock(&ioc->transport_cmds.mutex); 1121 1122 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) { 1123 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n", 1124 ioc->name, __func__); 1125 rc = -EAGAIN; 1126 goto out; 1127 } 1128 ioc->transport_cmds.status = MPT3_CMD_PENDING; 1129 1130 wait_state_count = 0; 1131 ioc_state = mpt3sas_base_get_iocstate(ioc, 1); 1132 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) { 1133 if (wait_state_count++ == 10) { 1134 pr_err(MPT3SAS_FMT 1135 "%s: failed due to ioc not operational\n", 1136 ioc->name, __func__); 1137 rc = -EFAULT; 1138 goto out; 1139 } 1140 ssleep(1); 1141 ioc_state = mpt3sas_base_get_iocstate(ioc, 1); 1142 pr_info(MPT3SAS_FMT 1143 "%s: waiting for operational state(count=%d)\n", 1144 ioc->name, __func__, wait_state_count); 1145 } 1146 if (wait_state_count) 1147 pr_info(MPT3SAS_FMT "%s: ioc is operational\n", 1148 ioc->name, __func__); 1149 1150 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx); 1151 if (!smid) { 1152 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n", 1153 ioc->name, __func__); 1154 rc = -EAGAIN; 1155 goto out; 1156 } 1157 1158 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); 1159 ioc->transport_cmds.smid = smid; 1160 1161 sz = sizeof(struct phy_error_log_request) + 1162 sizeof(struct phy_error_log_reply); 1163 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma); 1164 if (!data_out) { 1165 pr_err("failure at %s:%d/%s()!\n", __FILE__, 1166 __LINE__, __func__); 1167 rc = -ENOMEM; 1168 mpt3sas_base_free_smid(ioc, smid); 1169 goto out; 1170 } 1171 1172 rc = -EINVAL; 1173 memset(data_out, 0, sz); 1174 phy_error_log_request = data_out; 1175 phy_error_log_request->smp_frame_type = 0x40; 1176 phy_error_log_request->function = 0x11; 1177 phy_error_log_request->request_length = 2; 1178 phy_error_log_request->allocated_response_length = 0; 1179 phy_error_log_request->phy_identifier = phy->number; 1180 1181 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t)); 1182 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH; 1183 mpi_request->PhysicalPort = 0xFF; 1184 mpi_request->VF_ID = 0; /* TODO */ 1185 mpi_request->VP_ID = 0; 1186 mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address); 1187 mpi_request->RequestDataLength = 1188 cpu_to_le16(sizeof(struct phy_error_log_request)); 1189 psge = &mpi_request->SGL; 1190 1191 ioc->build_sg(ioc, psge, data_out_dma, 1192 sizeof(struct phy_error_log_request), 1193 data_out_dma + sizeof(struct phy_error_log_request), 1194 sizeof(struct phy_error_log_reply)); 1195 1196 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 1197 "phy_error_log - send to sas_addr(0x%016llx), phy(%d)\n", 1198 ioc->name, (unsigned long long)phy->identify.sas_address, 1199 phy->number)); 1200 init_completion(&ioc->transport_cmds.done); 1201 ioc->put_smid_default(ioc, smid); 1202 wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ); 1203 1204 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) { 1205 pr_err(MPT3SAS_FMT "%s: timeout\n", 1206 ioc->name, __func__); 1207 _debug_dump_mf(mpi_request, 1208 sizeof(Mpi2SmpPassthroughRequest_t)/4); 1209 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET)) 1210 issue_reset = 1; 1211 goto issue_host_reset; 1212 } 1213 1214 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 1215 "phy_error_log - complete\n", ioc->name)); 1216 1217 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) { 1218 1219 mpi_reply = ioc->transport_cmds.reply; 1220 1221 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 1222 "phy_error_log - reply data transfer size(%d)\n", 1223 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength))); 1224 1225 if (le16_to_cpu(mpi_reply->ResponseDataLength) != 1226 sizeof(struct phy_error_log_reply)) 1227 goto out; 1228 1229 phy_error_log_reply = data_out + 1230 sizeof(struct phy_error_log_request); 1231 1232 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 1233 "phy_error_log - function_result(%d)\n", 1234 ioc->name, phy_error_log_reply->function_result)); 1235 1236 phy->invalid_dword_count = 1237 be32_to_cpu(phy_error_log_reply->invalid_dword); 1238 phy->running_disparity_error_count = 1239 be32_to_cpu(phy_error_log_reply->running_disparity_error); 1240 phy->loss_of_dword_sync_count = 1241 be32_to_cpu(phy_error_log_reply->loss_of_dword_sync); 1242 phy->phy_reset_problem_count = 1243 be32_to_cpu(phy_error_log_reply->phy_reset_problem); 1244 rc = 0; 1245 } else 1246 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 1247 "phy_error_log - no reply\n", ioc->name)); 1248 1249 issue_host_reset: 1250 if (issue_reset) 1251 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); 1252 out: 1253 ioc->transport_cmds.status = MPT3_CMD_NOT_USED; 1254 if (data_out) 1255 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma); 1256 1257 mutex_unlock(&ioc->transport_cmds.mutex); 1258 return rc; 1259 } 1260 1261 /** 1262 * _transport_get_linkerrors - return phy counters for both hba and expanders 1263 * @phy: The sas phy object 1264 * 1265 * Returns 0 for success, non-zero for failure. 1266 * 1267 */ 1268 static int 1269 _transport_get_linkerrors(struct sas_phy *phy) 1270 { 1271 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy); 1272 unsigned long flags; 1273 Mpi2ConfigReply_t mpi_reply; 1274 Mpi2SasPhyPage1_t phy_pg1; 1275 1276 spin_lock_irqsave(&ioc->sas_node_lock, flags); 1277 if (_transport_sas_node_find_by_sas_address(ioc, 1278 phy->identify.sas_address) == NULL) { 1279 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 1280 return -EINVAL; 1281 } 1282 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 1283 1284 if (phy->identify.sas_address != ioc->sas_hba.sas_address) 1285 return _transport_get_expander_phy_error_log(ioc, phy); 1286 1287 /* get hba phy error logs */ 1288 if ((mpt3sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1, 1289 phy->number))) { 1290 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 1291 ioc->name, __FILE__, __LINE__, __func__); 1292 return -ENXIO; 1293 } 1294 1295 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) 1296 pr_info(MPT3SAS_FMT 1297 "phy(%d), ioc_status (0x%04x), loginfo(0x%08x)\n", 1298 ioc->name, phy->number, 1299 le16_to_cpu(mpi_reply.IOCStatus), 1300 le32_to_cpu(mpi_reply.IOCLogInfo)); 1301 1302 phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount); 1303 phy->running_disparity_error_count = 1304 le32_to_cpu(phy_pg1.RunningDisparityErrorCount); 1305 phy->loss_of_dword_sync_count = 1306 le32_to_cpu(phy_pg1.LossDwordSynchCount); 1307 phy->phy_reset_problem_count = 1308 le32_to_cpu(phy_pg1.PhyResetProblemCount); 1309 return 0; 1310 } 1311 1312 /** 1313 * _transport_get_enclosure_identifier - 1314 * @phy: The sas phy object 1315 * 1316 * Obtain the enclosure logical id for an expander. 1317 * Returns 0 for success, non-zero for failure. 1318 */ 1319 static int 1320 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier) 1321 { 1322 struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy); 1323 struct _sas_device *sas_device; 1324 unsigned long flags; 1325 int rc; 1326 1327 spin_lock_irqsave(&ioc->sas_device_lock, flags); 1328 sas_device = __mpt3sas_get_sdev_by_addr(ioc, 1329 rphy->identify.sas_address); 1330 if (sas_device) { 1331 *identifier = sas_device->enclosure_logical_id; 1332 rc = 0; 1333 sas_device_put(sas_device); 1334 } else { 1335 *identifier = 0; 1336 rc = -ENXIO; 1337 } 1338 1339 spin_unlock_irqrestore(&ioc->sas_device_lock, flags); 1340 return rc; 1341 } 1342 1343 /** 1344 * _transport_get_bay_identifier - 1345 * @phy: The sas phy object 1346 * 1347 * Returns the slot id for a device that resides inside an enclosure. 1348 */ 1349 static int 1350 _transport_get_bay_identifier(struct sas_rphy *rphy) 1351 { 1352 struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy); 1353 struct _sas_device *sas_device; 1354 unsigned long flags; 1355 int rc; 1356 1357 spin_lock_irqsave(&ioc->sas_device_lock, flags); 1358 sas_device = __mpt3sas_get_sdev_by_addr(ioc, 1359 rphy->identify.sas_address); 1360 if (sas_device) { 1361 rc = sas_device->slot; 1362 sas_device_put(sas_device); 1363 } else { 1364 rc = -ENXIO; 1365 } 1366 spin_unlock_irqrestore(&ioc->sas_device_lock, flags); 1367 return rc; 1368 } 1369 1370 /* phy control request structure */ 1371 struct phy_control_request { 1372 u8 smp_frame_type; /* 0x40 */ 1373 u8 function; /* 0x91 */ 1374 u8 allocated_response_length; 1375 u8 request_length; /* 0x09 */ 1376 u16 expander_change_count; 1377 u8 reserved_1[3]; 1378 u8 phy_identifier; 1379 u8 phy_operation; 1380 u8 reserved_2[13]; 1381 u64 attached_device_name; 1382 u8 programmed_min_physical_link_rate; 1383 u8 programmed_max_physical_link_rate; 1384 u8 reserved_3[6]; 1385 }; 1386 1387 /* phy control reply structure */ 1388 struct phy_control_reply { 1389 u8 smp_frame_type; /* 0x41 */ 1390 u8 function; /* 0x11 */ 1391 u8 function_result; 1392 u8 response_length; 1393 }; 1394 1395 #define SMP_PHY_CONTROL_LINK_RESET (0x01) 1396 #define SMP_PHY_CONTROL_HARD_RESET (0x02) 1397 #define SMP_PHY_CONTROL_DISABLE (0x03) 1398 1399 /** 1400 * _transport_expander_phy_control - expander phy control 1401 * @ioc: per adapter object 1402 * @phy: The sas phy object 1403 * 1404 * Returns 0 for success, non-zero for failure. 1405 * 1406 */ 1407 static int 1408 _transport_expander_phy_control(struct MPT3SAS_ADAPTER *ioc, 1409 struct sas_phy *phy, u8 phy_operation) 1410 { 1411 Mpi2SmpPassthroughRequest_t *mpi_request; 1412 Mpi2SmpPassthroughReply_t *mpi_reply; 1413 struct phy_control_request *phy_control_request; 1414 struct phy_control_reply *phy_control_reply; 1415 int rc; 1416 u16 smid; 1417 u32 ioc_state; 1418 void *psge; 1419 u8 issue_reset = 0; 1420 void *data_out = NULL; 1421 dma_addr_t data_out_dma; 1422 u32 sz; 1423 u16 wait_state_count; 1424 1425 if (ioc->shost_recovery || ioc->pci_error_recovery) { 1426 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n", 1427 __func__, ioc->name); 1428 return -EFAULT; 1429 } 1430 1431 mutex_lock(&ioc->transport_cmds.mutex); 1432 1433 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) { 1434 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n", 1435 ioc->name, __func__); 1436 rc = -EAGAIN; 1437 goto out; 1438 } 1439 ioc->transport_cmds.status = MPT3_CMD_PENDING; 1440 1441 wait_state_count = 0; 1442 ioc_state = mpt3sas_base_get_iocstate(ioc, 1); 1443 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) { 1444 if (wait_state_count++ == 10) { 1445 pr_err(MPT3SAS_FMT 1446 "%s: failed due to ioc not operational\n", 1447 ioc->name, __func__); 1448 rc = -EFAULT; 1449 goto out; 1450 } 1451 ssleep(1); 1452 ioc_state = mpt3sas_base_get_iocstate(ioc, 1); 1453 pr_info(MPT3SAS_FMT 1454 "%s: waiting for operational state(count=%d)\n", 1455 ioc->name, __func__, wait_state_count); 1456 } 1457 if (wait_state_count) 1458 pr_info(MPT3SAS_FMT "%s: ioc is operational\n", 1459 ioc->name, __func__); 1460 1461 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx); 1462 if (!smid) { 1463 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n", 1464 ioc->name, __func__); 1465 rc = -EAGAIN; 1466 goto out; 1467 } 1468 1469 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); 1470 ioc->transport_cmds.smid = smid; 1471 1472 sz = sizeof(struct phy_control_request) + 1473 sizeof(struct phy_control_reply); 1474 data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma); 1475 if (!data_out) { 1476 pr_err("failure at %s:%d/%s()!\n", __FILE__, 1477 __LINE__, __func__); 1478 rc = -ENOMEM; 1479 mpt3sas_base_free_smid(ioc, smid); 1480 goto out; 1481 } 1482 1483 rc = -EINVAL; 1484 memset(data_out, 0, sz); 1485 phy_control_request = data_out; 1486 phy_control_request->smp_frame_type = 0x40; 1487 phy_control_request->function = 0x91; 1488 phy_control_request->request_length = 9; 1489 phy_control_request->allocated_response_length = 0; 1490 phy_control_request->phy_identifier = phy->number; 1491 phy_control_request->phy_operation = phy_operation; 1492 phy_control_request->programmed_min_physical_link_rate = 1493 phy->minimum_linkrate << 4; 1494 phy_control_request->programmed_max_physical_link_rate = 1495 phy->maximum_linkrate << 4; 1496 1497 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t)); 1498 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH; 1499 mpi_request->PhysicalPort = 0xFF; 1500 mpi_request->VF_ID = 0; /* TODO */ 1501 mpi_request->VP_ID = 0; 1502 mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address); 1503 mpi_request->RequestDataLength = 1504 cpu_to_le16(sizeof(struct phy_error_log_request)); 1505 psge = &mpi_request->SGL; 1506 1507 ioc->build_sg(ioc, psge, data_out_dma, 1508 sizeof(struct phy_control_request), 1509 data_out_dma + sizeof(struct phy_control_request), 1510 sizeof(struct phy_control_reply)); 1511 1512 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 1513 "phy_control - send to sas_addr(0x%016llx), phy(%d), opcode(%d)\n", 1514 ioc->name, (unsigned long long)phy->identify.sas_address, 1515 phy->number, phy_operation)); 1516 init_completion(&ioc->transport_cmds.done); 1517 ioc->put_smid_default(ioc, smid); 1518 wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ); 1519 1520 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) { 1521 pr_err(MPT3SAS_FMT "%s: timeout\n", 1522 ioc->name, __func__); 1523 _debug_dump_mf(mpi_request, 1524 sizeof(Mpi2SmpPassthroughRequest_t)/4); 1525 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET)) 1526 issue_reset = 1; 1527 goto issue_host_reset; 1528 } 1529 1530 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 1531 "phy_control - complete\n", ioc->name)); 1532 1533 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) { 1534 1535 mpi_reply = ioc->transport_cmds.reply; 1536 1537 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 1538 "phy_control - reply data transfer size(%d)\n", 1539 ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength))); 1540 1541 if (le16_to_cpu(mpi_reply->ResponseDataLength) != 1542 sizeof(struct phy_control_reply)) 1543 goto out; 1544 1545 phy_control_reply = data_out + 1546 sizeof(struct phy_control_request); 1547 1548 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 1549 "phy_control - function_result(%d)\n", 1550 ioc->name, phy_control_reply->function_result)); 1551 1552 rc = 0; 1553 } else 1554 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 1555 "phy_control - no reply\n", ioc->name)); 1556 1557 issue_host_reset: 1558 if (issue_reset) 1559 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); 1560 out: 1561 ioc->transport_cmds.status = MPT3_CMD_NOT_USED; 1562 if (data_out) 1563 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma); 1564 1565 mutex_unlock(&ioc->transport_cmds.mutex); 1566 return rc; 1567 } 1568 1569 /** 1570 * _transport_phy_reset - 1571 * @phy: The sas phy object 1572 * @hard_reset: 1573 * 1574 * Returns 0 for success, non-zero for failure. 1575 */ 1576 static int 1577 _transport_phy_reset(struct sas_phy *phy, int hard_reset) 1578 { 1579 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy); 1580 Mpi2SasIoUnitControlReply_t mpi_reply; 1581 Mpi2SasIoUnitControlRequest_t mpi_request; 1582 unsigned long flags; 1583 1584 spin_lock_irqsave(&ioc->sas_node_lock, flags); 1585 if (_transport_sas_node_find_by_sas_address(ioc, 1586 phy->identify.sas_address) == NULL) { 1587 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 1588 return -EINVAL; 1589 } 1590 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 1591 1592 /* handle expander phys */ 1593 if (phy->identify.sas_address != ioc->sas_hba.sas_address) 1594 return _transport_expander_phy_control(ioc, phy, 1595 (hard_reset == 1) ? SMP_PHY_CONTROL_HARD_RESET : 1596 SMP_PHY_CONTROL_LINK_RESET); 1597 1598 /* handle hba phys */ 1599 memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t)); 1600 mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL; 1601 mpi_request.Operation = hard_reset ? 1602 MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET; 1603 mpi_request.PhyNum = phy->number; 1604 1605 if ((mpt3sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) { 1606 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 1607 ioc->name, __FILE__, __LINE__, __func__); 1608 return -ENXIO; 1609 } 1610 1611 if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) 1612 pr_info(MPT3SAS_FMT 1613 "phy(%d), ioc_status(0x%04x), loginfo(0x%08x)\n", 1614 ioc->name, phy->number, le16_to_cpu(mpi_reply.IOCStatus), 1615 le32_to_cpu(mpi_reply.IOCLogInfo)); 1616 1617 return 0; 1618 } 1619 1620 /** 1621 * _transport_phy_enable - enable/disable phys 1622 * @phy: The sas phy object 1623 * @enable: enable phy when true 1624 * 1625 * Only support sas_host direct attached phys. 1626 * Returns 0 for success, non-zero for failure. 1627 */ 1628 static int 1629 _transport_phy_enable(struct sas_phy *phy, int enable) 1630 { 1631 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy); 1632 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL; 1633 Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL; 1634 Mpi2ConfigReply_t mpi_reply; 1635 u16 ioc_status; 1636 u16 sz; 1637 int rc = 0; 1638 unsigned long flags; 1639 int i, discovery_active; 1640 1641 spin_lock_irqsave(&ioc->sas_node_lock, flags); 1642 if (_transport_sas_node_find_by_sas_address(ioc, 1643 phy->identify.sas_address) == NULL) { 1644 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 1645 return -EINVAL; 1646 } 1647 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 1648 1649 /* handle expander phys */ 1650 if (phy->identify.sas_address != ioc->sas_hba.sas_address) 1651 return _transport_expander_phy_control(ioc, phy, 1652 (enable == 1) ? SMP_PHY_CONTROL_LINK_RESET : 1653 SMP_PHY_CONTROL_DISABLE); 1654 1655 /* handle hba phys */ 1656 1657 /* read sas_iounit page 0 */ 1658 sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys * 1659 sizeof(Mpi2SasIOUnit0PhyData_t)); 1660 sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL); 1661 if (!sas_iounit_pg0) { 1662 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 1663 ioc->name, __FILE__, __LINE__, __func__); 1664 rc = -ENOMEM; 1665 goto out; 1666 } 1667 if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply, 1668 sas_iounit_pg0, sz))) { 1669 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 1670 ioc->name, __FILE__, __LINE__, __func__); 1671 rc = -ENXIO; 1672 goto out; 1673 } 1674 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & 1675 MPI2_IOCSTATUS_MASK; 1676 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) { 1677 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 1678 ioc->name, __FILE__, __LINE__, __func__); 1679 rc = -EIO; 1680 goto out; 1681 } 1682 1683 /* unable to enable/disable phys when when discovery is active */ 1684 for (i = 0, discovery_active = 0; i < ioc->sas_hba.num_phys ; i++) { 1685 if (sas_iounit_pg0->PhyData[i].PortFlags & 1686 MPI2_SASIOUNIT0_PORTFLAGS_DISCOVERY_IN_PROGRESS) { 1687 pr_err(MPT3SAS_FMT "discovery is active on " \ 1688 "port = %d, phy = %d: unable to enable/disable " 1689 "phys, try again later!\n", ioc->name, 1690 sas_iounit_pg0->PhyData[i].Port, i); 1691 discovery_active = 1; 1692 } 1693 } 1694 1695 if (discovery_active) { 1696 rc = -EAGAIN; 1697 goto out; 1698 } 1699 1700 /* read sas_iounit page 1 */ 1701 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys * 1702 sizeof(Mpi2SasIOUnit1PhyData_t)); 1703 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL); 1704 if (!sas_iounit_pg1) { 1705 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 1706 ioc->name, __FILE__, __LINE__, __func__); 1707 rc = -ENOMEM; 1708 goto out; 1709 } 1710 if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply, 1711 sas_iounit_pg1, sz))) { 1712 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 1713 ioc->name, __FILE__, __LINE__, __func__); 1714 rc = -ENXIO; 1715 goto out; 1716 } 1717 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & 1718 MPI2_IOCSTATUS_MASK; 1719 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) { 1720 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 1721 ioc->name, __FILE__, __LINE__, __func__); 1722 rc = -EIO; 1723 goto out; 1724 } 1725 1726 /* copy Port/PortFlags/PhyFlags from page 0 */ 1727 for (i = 0; i < ioc->sas_hba.num_phys ; i++) { 1728 sas_iounit_pg1->PhyData[i].Port = 1729 sas_iounit_pg0->PhyData[i].Port; 1730 sas_iounit_pg1->PhyData[i].PortFlags = 1731 (sas_iounit_pg0->PhyData[i].PortFlags & 1732 MPI2_SASIOUNIT0_PORTFLAGS_AUTO_PORT_CONFIG); 1733 sas_iounit_pg1->PhyData[i].PhyFlags = 1734 (sas_iounit_pg0->PhyData[i].PhyFlags & 1735 (MPI2_SASIOUNIT0_PHYFLAGS_ZONING_ENABLED + 1736 MPI2_SASIOUNIT0_PHYFLAGS_PHY_DISABLED)); 1737 } 1738 1739 if (enable) 1740 sas_iounit_pg1->PhyData[phy->number].PhyFlags 1741 &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE; 1742 else 1743 sas_iounit_pg1->PhyData[phy->number].PhyFlags 1744 |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE; 1745 1746 mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz); 1747 1748 /* link reset */ 1749 if (enable) 1750 _transport_phy_reset(phy, 0); 1751 1752 out: 1753 kfree(sas_iounit_pg1); 1754 kfree(sas_iounit_pg0); 1755 return rc; 1756 } 1757 1758 /** 1759 * _transport_phy_speed - set phy min/max link rates 1760 * @phy: The sas phy object 1761 * @rates: rates defined in sas_phy_linkrates 1762 * 1763 * Only support sas_host direct attached phys. 1764 * Returns 0 for success, non-zero for failure. 1765 */ 1766 static int 1767 _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates) 1768 { 1769 struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy); 1770 Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL; 1771 Mpi2SasPhyPage0_t phy_pg0; 1772 Mpi2ConfigReply_t mpi_reply; 1773 u16 ioc_status; 1774 u16 sz; 1775 int i; 1776 int rc = 0; 1777 unsigned long flags; 1778 1779 spin_lock_irqsave(&ioc->sas_node_lock, flags); 1780 if (_transport_sas_node_find_by_sas_address(ioc, 1781 phy->identify.sas_address) == NULL) { 1782 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 1783 return -EINVAL; 1784 } 1785 spin_unlock_irqrestore(&ioc->sas_node_lock, flags); 1786 1787 if (!rates->minimum_linkrate) 1788 rates->minimum_linkrate = phy->minimum_linkrate; 1789 else if (rates->minimum_linkrate < phy->minimum_linkrate_hw) 1790 rates->minimum_linkrate = phy->minimum_linkrate_hw; 1791 1792 if (!rates->maximum_linkrate) 1793 rates->maximum_linkrate = phy->maximum_linkrate; 1794 else if (rates->maximum_linkrate > phy->maximum_linkrate_hw) 1795 rates->maximum_linkrate = phy->maximum_linkrate_hw; 1796 1797 /* handle expander phys */ 1798 if (phy->identify.sas_address != ioc->sas_hba.sas_address) { 1799 phy->minimum_linkrate = rates->minimum_linkrate; 1800 phy->maximum_linkrate = rates->maximum_linkrate; 1801 return _transport_expander_phy_control(ioc, phy, 1802 SMP_PHY_CONTROL_LINK_RESET); 1803 } 1804 1805 /* handle hba phys */ 1806 1807 /* sas_iounit page 1 */ 1808 sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys * 1809 sizeof(Mpi2SasIOUnit1PhyData_t)); 1810 sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL); 1811 if (!sas_iounit_pg1) { 1812 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 1813 ioc->name, __FILE__, __LINE__, __func__); 1814 rc = -ENOMEM; 1815 goto out; 1816 } 1817 if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply, 1818 sas_iounit_pg1, sz))) { 1819 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 1820 ioc->name, __FILE__, __LINE__, __func__); 1821 rc = -ENXIO; 1822 goto out; 1823 } 1824 ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & 1825 MPI2_IOCSTATUS_MASK; 1826 if (ioc_status != MPI2_IOCSTATUS_SUCCESS) { 1827 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 1828 ioc->name, __FILE__, __LINE__, __func__); 1829 rc = -EIO; 1830 goto out; 1831 } 1832 1833 for (i = 0; i < ioc->sas_hba.num_phys; i++) { 1834 if (phy->number != i) { 1835 sas_iounit_pg1->PhyData[i].MaxMinLinkRate = 1836 (ioc->sas_hba.phy[i].phy->minimum_linkrate + 1837 (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4)); 1838 } else { 1839 sas_iounit_pg1->PhyData[i].MaxMinLinkRate = 1840 (rates->minimum_linkrate + 1841 (rates->maximum_linkrate << 4)); 1842 } 1843 } 1844 1845 if (mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, 1846 sz)) { 1847 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n", 1848 ioc->name, __FILE__, __LINE__, __func__); 1849 rc = -ENXIO; 1850 goto out; 1851 } 1852 1853 /* link reset */ 1854 _transport_phy_reset(phy, 0); 1855 1856 /* read phy page 0, then update the rates in the sas transport phy */ 1857 if (!mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0, 1858 phy->number)) { 1859 phy->minimum_linkrate = _transport_convert_phy_link_rate( 1860 phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK); 1861 phy->maximum_linkrate = _transport_convert_phy_link_rate( 1862 phy_pg0.ProgrammedLinkRate >> 4); 1863 phy->negotiated_linkrate = _transport_convert_phy_link_rate( 1864 phy_pg0.NegotiatedLinkRate & 1865 MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL); 1866 } 1867 1868 out: 1869 kfree(sas_iounit_pg1); 1870 return rc; 1871 } 1872 1873 /** 1874 * _transport_smp_handler - transport portal for smp passthru 1875 * @shost: shost object 1876 * @rphy: sas transport rphy object 1877 * @req: 1878 * 1879 * This used primarily for smp_utils. 1880 * Example: 1881 * smp_rep_general /sys/class/bsg/expander-5:0 1882 */ 1883 static int 1884 _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, 1885 struct request *req) 1886 { 1887 struct MPT3SAS_ADAPTER *ioc = shost_priv(shost); 1888 Mpi2SmpPassthroughRequest_t *mpi_request; 1889 Mpi2SmpPassthroughReply_t *mpi_reply; 1890 int rc; 1891 u16 smid; 1892 u32 ioc_state; 1893 void *psge; 1894 u8 issue_reset = 0; 1895 dma_addr_t dma_addr_in = 0; 1896 dma_addr_t dma_addr_out = 0; 1897 dma_addr_t pci_dma_in = 0; 1898 dma_addr_t pci_dma_out = 0; 1899 void *pci_addr_in = NULL; 1900 void *pci_addr_out = NULL; 1901 u16 wait_state_count; 1902 struct request *rsp = req->next_rq; 1903 struct bio_vec bvec; 1904 struct bvec_iter iter; 1905 1906 if (!rsp) { 1907 pr_err(MPT3SAS_FMT "%s: the smp response space is missing\n", 1908 ioc->name, __func__); 1909 return -EINVAL; 1910 } 1911 1912 if (ioc->shost_recovery || ioc->pci_error_recovery) { 1913 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n", 1914 __func__, ioc->name); 1915 return -EFAULT; 1916 } 1917 1918 rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex); 1919 if (rc) 1920 return rc; 1921 1922 if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) { 1923 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n", ioc->name, 1924 __func__); 1925 rc = -EAGAIN; 1926 goto out; 1927 } 1928 ioc->transport_cmds.status = MPT3_CMD_PENDING; 1929 1930 /* Check if the request is split across multiple segments */ 1931 if (bio_multiple_segments(req->bio)) { 1932 u32 offset = 0; 1933 1934 /* Allocate memory and copy the request */ 1935 pci_addr_out = pci_alloc_consistent(ioc->pdev, 1936 blk_rq_bytes(req), &pci_dma_out); 1937 if (!pci_addr_out) { 1938 pr_info(MPT3SAS_FMT "%s(): PCI Addr out = NULL\n", 1939 ioc->name, __func__); 1940 rc = -ENOMEM; 1941 goto out; 1942 } 1943 1944 bio_for_each_segment(bvec, req->bio, iter) { 1945 memcpy(pci_addr_out + offset, 1946 page_address(bvec.bv_page) + bvec.bv_offset, 1947 bvec.bv_len); 1948 offset += bvec.bv_len; 1949 } 1950 } else { 1951 dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio), 1952 blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL); 1953 if (pci_dma_mapping_error(ioc->pdev, dma_addr_out)) { 1954 pr_info(MPT3SAS_FMT "%s(): DMA Addr out = NULL\n", 1955 ioc->name, __func__); 1956 rc = -ENOMEM; 1957 goto free_pci; 1958 } 1959 } 1960 1961 /* Check if the response needs to be populated across 1962 * multiple segments */ 1963 if (bio_multiple_segments(rsp->bio)) { 1964 pci_addr_in = pci_alloc_consistent(ioc->pdev, blk_rq_bytes(rsp), 1965 &pci_dma_in); 1966 if (!pci_addr_in) { 1967 pr_info(MPT3SAS_FMT "%s(): PCI Addr in = NULL\n", 1968 ioc->name, __func__); 1969 rc = -ENOMEM; 1970 goto unmap; 1971 } 1972 } else { 1973 dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio), 1974 blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL); 1975 if (pci_dma_mapping_error(ioc->pdev, dma_addr_in)) { 1976 pr_info(MPT3SAS_FMT "%s(): DMA Addr in = NULL\n", 1977 ioc->name, __func__); 1978 rc = -ENOMEM; 1979 goto unmap; 1980 } 1981 } 1982 1983 wait_state_count = 0; 1984 ioc_state = mpt3sas_base_get_iocstate(ioc, 1); 1985 while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) { 1986 if (wait_state_count++ == 10) { 1987 pr_err(MPT3SAS_FMT 1988 "%s: failed due to ioc not operational\n", 1989 ioc->name, __func__); 1990 rc = -EFAULT; 1991 goto unmap; 1992 } 1993 ssleep(1); 1994 ioc_state = mpt3sas_base_get_iocstate(ioc, 1); 1995 pr_info(MPT3SAS_FMT 1996 "%s: waiting for operational state(count=%d)\n", 1997 ioc->name, __func__, wait_state_count); 1998 } 1999 if (wait_state_count) 2000 pr_info(MPT3SAS_FMT "%s: ioc is operational\n", 2001 ioc->name, __func__); 2002 2003 smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx); 2004 if (!smid) { 2005 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n", 2006 ioc->name, __func__); 2007 rc = -EAGAIN; 2008 goto unmap; 2009 } 2010 2011 rc = 0; 2012 mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); 2013 ioc->transport_cmds.smid = smid; 2014 2015 memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t)); 2016 mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH; 2017 mpi_request->PhysicalPort = 0xFF; 2018 mpi_request->SASAddress = (rphy) ? 2019 cpu_to_le64(rphy->identify.sas_address) : 2020 cpu_to_le64(ioc->sas_hba.sas_address); 2021 mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4); 2022 psge = &mpi_request->SGL; 2023 2024 if (bio_multiple_segments(req->bio)) 2025 ioc->build_sg(ioc, psge, pci_dma_out, (blk_rq_bytes(req) - 4), 2026 pci_dma_in, (blk_rq_bytes(rsp) + 4)); 2027 else 2028 ioc->build_sg(ioc, psge, dma_addr_out, (blk_rq_bytes(req) - 4), 2029 dma_addr_in, (blk_rq_bytes(rsp) + 4)); 2030 2031 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 2032 "%s - sending smp request\n", ioc->name, __func__)); 2033 2034 init_completion(&ioc->transport_cmds.done); 2035 ioc->put_smid_default(ioc, smid); 2036 wait_for_completion_timeout(&ioc->transport_cmds.done, 10*HZ); 2037 2038 if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) { 2039 pr_err(MPT3SAS_FMT "%s : timeout\n", 2040 __func__, ioc->name); 2041 _debug_dump_mf(mpi_request, 2042 sizeof(Mpi2SmpPassthroughRequest_t)/4); 2043 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET)) 2044 issue_reset = 1; 2045 goto issue_host_reset; 2046 } 2047 2048 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 2049 "%s - complete\n", ioc->name, __func__)); 2050 2051 if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) { 2052 2053 mpi_reply = ioc->transport_cmds.reply; 2054 2055 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 2056 "%s - reply data transfer size(%d)\n", 2057 ioc->name, __func__, 2058 le16_to_cpu(mpi_reply->ResponseDataLength))); 2059 2060 memcpy(scsi_req(req)->sense, mpi_reply, sizeof(*mpi_reply)); 2061 scsi_req(req)->sense_len = sizeof(*mpi_reply); 2062 scsi_req(req)->resid_len = 0; 2063 scsi_req(rsp)->resid_len -= 2064 le16_to_cpu(mpi_reply->ResponseDataLength); 2065 2066 /* check if the resp needs to be copied from the allocated 2067 * pci mem */ 2068 if (bio_multiple_segments(rsp->bio)) { 2069 u32 offset = 0; 2070 u32 bytes_to_copy = 2071 le16_to_cpu(mpi_reply->ResponseDataLength); 2072 bio_for_each_segment(bvec, rsp->bio, iter) { 2073 if (bytes_to_copy <= bvec.bv_len) { 2074 memcpy(page_address(bvec.bv_page) + 2075 bvec.bv_offset, pci_addr_in + 2076 offset, bytes_to_copy); 2077 break; 2078 } else { 2079 memcpy(page_address(bvec.bv_page) + 2080 bvec.bv_offset, pci_addr_in + 2081 offset, bvec.bv_len); 2082 bytes_to_copy -= bvec.bv_len; 2083 } 2084 offset += bvec.bv_len; 2085 } 2086 } 2087 } else { 2088 dtransportprintk(ioc, pr_info(MPT3SAS_FMT 2089 "%s - no reply\n", ioc->name, __func__)); 2090 rc = -ENXIO; 2091 } 2092 2093 issue_host_reset: 2094 if (issue_reset) { 2095 mpt3sas_base_hard_reset_handler(ioc, FORCE_BIG_HAMMER); 2096 rc = -ETIMEDOUT; 2097 } 2098 2099 unmap: 2100 if (dma_addr_out) 2101 pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req), 2102 PCI_DMA_BIDIRECTIONAL); 2103 if (dma_addr_in) 2104 pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp), 2105 PCI_DMA_BIDIRECTIONAL); 2106 2107 free_pci: 2108 if (pci_addr_out) 2109 pci_free_consistent(ioc->pdev, blk_rq_bytes(req), pci_addr_out, 2110 pci_dma_out); 2111 2112 if (pci_addr_in) 2113 pci_free_consistent(ioc->pdev, blk_rq_bytes(rsp), pci_addr_in, 2114 pci_dma_in); 2115 2116 out: 2117 ioc->transport_cmds.status = MPT3_CMD_NOT_USED; 2118 mutex_unlock(&ioc->transport_cmds.mutex); 2119 return rc; 2120 } 2121 2122 struct sas_function_template mpt3sas_transport_functions = { 2123 .get_linkerrors = _transport_get_linkerrors, 2124 .get_enclosure_identifier = _transport_get_enclosure_identifier, 2125 .get_bay_identifier = _transport_get_bay_identifier, 2126 .phy_reset = _transport_phy_reset, 2127 .phy_enable = _transport_phy_enable, 2128 .set_phy_speed = _transport_phy_speed, 2129 .smp_handler = _transport_smp_handler, 2130 }; 2131 2132 struct scsi_transport_template *mpt3sas_transport_template; 2133