drivers/scsi/mpt3sas/mpt3sas_transport.c

   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         unsigned long timeleft;
 304         void *psge;
 305         u8 issue_reset = 0;
 306         void *data_out = NULL;
 307         dma_addr_t data_out_dma;
 308         dma_addr_t data_in_dma;
 309         size_t data_in_sz;
 310         size_t data_out_sz;
 311         u16 wait_state_count;
 312
 313         if (ioc->shost_recovery || ioc->pci_error_recovery) {
 314                 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
 315                     __func__, ioc->name);
 316                 return -EFAULT;
 317         }
 318
 319         mutex_lock(&ioc->transport_cmds.mutex);
 320
 321         if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
 322                 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n",
 323                     ioc->name, __func__);
 324                 rc = -EAGAIN;
 325                 goto out;
 326         }
 327         ioc->transport_cmds.status = MPT3_CMD_PENDING;
 328
 329         wait_state_count = 0;
 330         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
 331         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
 332                 if (wait_state_count++ == 10) {
 333                         pr_err(MPT3SAS_FMT
 334                             "%s: failed due to ioc not operational\n",
 335                             ioc->name, __func__);
 336                         rc = -EFAULT;
 337                         goto out;
 338                 }
 339                 ssleep(1);
 340                 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
 341                 pr_info(MPT3SAS_FMT
 342                         "%s: waiting for operational state(count=%d)\n",
 343                         ioc->name, __func__, wait_state_count);
 344         }
 345         if (wait_state_count)
 346                 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
 347                     ioc->name, __func__);
 348
 349         smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
 350         if (!smid) {
 351                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
 352                     ioc->name, __func__);
 353                 rc = -EAGAIN;
 354                 goto out;
 355         }
 356
 357         rc = 0;
 358         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
 359         ioc->transport_cmds.smid = smid;
 360
 361         data_out_sz = sizeof(struct rep_manu_request);
 362         data_in_sz = sizeof(struct rep_manu_reply);
 363         data_out = pci_alloc_consistent(ioc->pdev, data_out_sz + data_in_sz,
 364             &data_out_dma);
 365
 366         if (!data_out) {
 367                 pr_err("failure at %s:%d/%s()!\n", __FILE__,
 368                     __LINE__, __func__);
 369                 rc = -ENOMEM;
 370                 mpt3sas_base_free_smid(ioc, smid);
 371                 goto out;
 372         }
 373
 374         data_in_dma = data_out_dma + sizeof(struct rep_manu_request);
 375
 376         manufacture_request = data_out;
 377         manufacture_request->smp_frame_type = 0x40;
 378         manufacture_request->function = 1;
 379         manufacture_request->reserved = 0;
 380         manufacture_request->request_length = 0;
 381
 382         memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
 383         mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
 384         mpi_request->PhysicalPort = 0xFF;
 385         mpi_request->SASAddress = cpu_to_le64(sas_address);
 386         mpi_request->RequestDataLength = cpu_to_le16(data_out_sz);
 387         psge = &mpi_request->SGL;
 388
 389         ioc->build_sg(ioc, psge, data_out_dma, data_out_sz, data_in_dma,
 390             data_in_sz);
 391
 392         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
 393                 "report_manufacture - send to sas_addr(0x%016llx)\n",
 394                 ioc->name, (unsigned long long)sas_address));
 395         init_completion(&ioc->transport_cmds.done);
 396         mpt3sas_base_put_smid_default(ioc, smid);
 397         timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
 398             10*HZ);
 399
 400         if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
 401                 pr_err(MPT3SAS_FMT "%s: timeout\n",
 402                     ioc->name, __func__);
 403                 _debug_dump_mf(mpi_request,
 404                     sizeof(Mpi2SmpPassthroughRequest_t)/4);
 405                 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
 406                         issue_reset = 1;
 407                 goto issue_host_reset;
 408         }
 409
 410         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
 411                 "report_manufacture - complete\n", ioc->name));
 412
 413         if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
 414                 u8 *tmp;
 415
 416                 mpi_reply = ioc->transport_cmds.reply;
 417
 418                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
 419                     "report_manufacture - reply data transfer size(%d)\n",
 420                     ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
 421
 422                 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
 423                     sizeof(struct rep_manu_reply))
 424                         goto out;
 425
 426                 manufacture_reply = data_out + sizeof(struct rep_manu_request);
 427                 strncpy(edev->vendor_id, manufacture_reply->vendor_id,
 428                      SAS_EXPANDER_VENDOR_ID_LEN);
 429                 strncpy(edev->product_id, manufacture_reply->product_id,
 430                      SAS_EXPANDER_PRODUCT_ID_LEN);
 431                 strncpy(edev->product_rev, manufacture_reply->product_rev,
 432                      SAS_EXPANDER_PRODUCT_REV_LEN);
 433                 edev->level = manufacture_reply->sas_format & 1;
 434                 if (edev->level) {
 435                         strncpy(edev->component_vendor_id,
 436                             manufacture_reply->component_vendor_id,
 437                              SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN);
 438                         tmp = (u8 *)&manufacture_reply->component_id;
 439                         edev->component_id = tmp[0] << 8 | tmp[1];
 440                         edev->component_revision_id =
 441                             manufacture_reply->component_revision_id;
 442                 }
 443         } else
 444                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
 445                     "report_manufacture - no reply\n", ioc->name));
 446
 447  issue_host_reset:
 448         if (issue_reset)
 449                 mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
 450                     FORCE_BIG_HAMMER);
 451  out:
 452         ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
 453         if (data_out)
 454                 pci_free_consistent(ioc->pdev, data_out_sz + data_in_sz,
 455                     data_out, data_out_dma);
 456
 457         mutex_unlock(&ioc->transport_cmds.mutex);
 458         return rc;
 459 }
 460
 461
 462 /**
 463  * _transport_delete_port - helper function to removing a port
 464  * @ioc: per adapter object
 465  * @mpt3sas_port: mpt3sas per port object
 466  *
 467  * Returns nothing.
 468  */
 469 static void
 470 _transport_delete_port(struct MPT3SAS_ADAPTER *ioc,
 471         struct _sas_port *mpt3sas_port)
 472 {
 473         u64 sas_address = mpt3sas_port->remote_identify.sas_address;
 474         enum sas_device_type device_type =
 475             mpt3sas_port->remote_identify.device_type;
 476
 477         dev_printk(KERN_INFO, &mpt3sas_port->port->dev,
 478             "remove: sas_addr(0x%016llx)\n",
 479             (unsigned long long) sas_address);
 480
 481         ioc->logging_level |= MPT_DEBUG_TRANSPORT;
 482         if (device_type == SAS_END_DEVICE)
 483                 mpt3sas_device_remove_by_sas_address(ioc, sas_address);
 484         else if (device_type == SAS_EDGE_EXPANDER_DEVICE ||
 485             device_type == SAS_FANOUT_EXPANDER_DEVICE)
 486                 mpt3sas_expander_remove(ioc, sas_address);
 487         ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
 488 }
 489
 490 /**
 491  * _transport_delete_phy - helper function to removing single phy from port
 492  * @ioc: per adapter object
 493  * @mpt3sas_port: mpt3sas per port object
 494  * @mpt3sas_phy: mpt3sas per phy object
 495  *
 496  * Returns nothing.
 497  */
 498 static void
 499 _transport_delete_phy(struct MPT3SAS_ADAPTER *ioc,
 500         struct _sas_port *mpt3sas_port, struct _sas_phy *mpt3sas_phy)
 501 {
 502         u64 sas_address = mpt3sas_port->remote_identify.sas_address;
 503
 504         dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
 505             "remove: sas_addr(0x%016llx), phy(%d)\n",
 506             (unsigned long long) sas_address, mpt3sas_phy->phy_id);
 507
 508         list_del(&mpt3sas_phy->port_siblings);
 509         mpt3sas_port->num_phys--;
 510         sas_port_delete_phy(mpt3sas_port->port, mpt3sas_phy->phy);
 511         mpt3sas_phy->phy_belongs_to_port = 0;
 512 }
 513
 514 /**
 515  * _transport_add_phy - helper function to adding single phy to port
 516  * @ioc: per adapter object
 517  * @mpt3sas_port: mpt3sas per port object
 518  * @mpt3sas_phy: mpt3sas per phy object
 519  *
 520  * Returns nothing.
 521  */
 522 static void
 523 _transport_add_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_port *mpt3sas_port,
 524         struct _sas_phy *mpt3sas_phy)
 525 {
 526         u64 sas_address = mpt3sas_port->remote_identify.sas_address;
 527
 528         dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
 529             "add: sas_addr(0x%016llx), phy(%d)\n", (unsigned long long)
 530             sas_address, mpt3sas_phy->phy_id);
 531
 532         list_add_tail(&mpt3sas_phy->port_siblings, &mpt3sas_port->phy_list);
 533         mpt3sas_port->num_phys++;
 534         sas_port_add_phy(mpt3sas_port->port, mpt3sas_phy->phy);
 535         mpt3sas_phy->phy_belongs_to_port = 1;
 536 }
 537
 538 /**
 539  * _transport_add_phy_to_an_existing_port - adding new phy to existing port
 540  * @ioc: per adapter object
 541  * @sas_node: sas node object (either expander or sas host)
 542  * @mpt3sas_phy: mpt3sas per phy object
 543  * @sas_address: sas address of device/expander were phy needs to be added to
 544  *
 545  * Returns nothing.
 546  */
 547 static void
 548 _transport_add_phy_to_an_existing_port(struct MPT3SAS_ADAPTER *ioc,
 549         struct _sas_node *sas_node, struct _sas_phy *mpt3sas_phy,
 550         u64 sas_address)
 551 {
 552         struct _sas_port *mpt3sas_port;
 553         struct _sas_phy *phy_srch;
 554
 555         if (mpt3sas_phy->phy_belongs_to_port == 1)
 556                 return;
 557
 558         list_for_each_entry(mpt3sas_port, &sas_node->sas_port_list,
 559             port_list) {
 560                 if (mpt3sas_port->remote_identify.sas_address !=
 561                     sas_address)
 562                         continue;
 563                 list_for_each_entry(phy_srch, &mpt3sas_port->phy_list,
 564                     port_siblings) {
 565                         if (phy_srch == mpt3sas_phy)
 566                                 return;
 567                 }
 568                 _transport_add_phy(ioc, mpt3sas_port, mpt3sas_phy);
 569                         return;
 570         }
 571
 572 }
 573
 574 /**
 575  * _transport_del_phy_from_an_existing_port - delete phy from existing port
 576  * @ioc: per adapter object
 577  * @sas_node: sas node object (either expander or sas host)
 578  * @mpt3sas_phy: mpt3sas per phy object
 579  *
 580  * Returns nothing.
 581  */
 582 static void
 583 _transport_del_phy_from_an_existing_port(struct MPT3SAS_ADAPTER *ioc,
 584         struct _sas_node *sas_node, struct _sas_phy *mpt3sas_phy)
 585 {
 586         struct _sas_port *mpt3sas_port, *next;
 587         struct _sas_phy *phy_srch;
 588
 589         if (mpt3sas_phy->phy_belongs_to_port == 0)
 590                 return;
 591
 592         list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list,
 593             port_list) {
 594                 list_for_each_entry(phy_srch, &mpt3sas_port->phy_list,
 595                     port_siblings) {
 596                         if (phy_srch != mpt3sas_phy)
 597                                 continue;
 598
 599                         if (mpt3sas_port->num_phys == 1)
 600                                 _transport_delete_port(ioc, mpt3sas_port);
 601                         else
 602                                 _transport_delete_phy(ioc, mpt3sas_port,
 603                                     mpt3sas_phy);
 604                         return;
 605                 }
 606         }
 607 }
 608
 609 /**
 610  * _transport_sanity_check - sanity check when adding a new port
 611  * @ioc: per adapter object
 612  * @sas_node: sas node object (either expander or sas host)
 613  * @sas_address: sas address of device being added
 614  *
 615  * See the explanation above from _transport_delete_duplicate_port
 616  */
 617 static void
 618 _transport_sanity_check(struct MPT3SAS_ADAPTER *ioc, struct _sas_node *sas_node,
 619         u64 sas_address)
 620 {
 621         int i;
 622
 623         for (i = 0; i < sas_node->num_phys; i++) {
 624                 if (sas_node->phy[i].remote_identify.sas_address != sas_address)
 625                         continue;
 626                 if (sas_node->phy[i].phy_belongs_to_port == 1)
 627                         _transport_del_phy_from_an_existing_port(ioc, sas_node,
 628                             &sas_node->phy[i]);
 629         }
 630 }
 631
 632 /**
 633  * mpt3sas_transport_port_add - insert port to the list
 634  * @ioc: per adapter object
 635  * @handle: handle of attached device
 636  * @sas_address: sas address of parent expander or sas host
 637  * Context: This function will acquire ioc->sas_node_lock.
 638  *
 639  * Adding new port object to the sas_node->sas_port_list.
 640  *
 641  * Returns mpt3sas_port.
 642  */
 643 struct _sas_port *
 644 mpt3sas_transport_port_add(struct MPT3SAS_ADAPTER *ioc, u16 handle,
 645         u64 sas_address)
 646 {
 647         struct _sas_phy *mpt3sas_phy, *next;
 648         struct _sas_port *mpt3sas_port;
 649         unsigned long flags;
 650         struct _sas_node *sas_node;
 651         struct sas_rphy *rphy;
 652         struct _sas_device *sas_device = NULL;
 653         int i;
 654         struct sas_port *port;
 655
 656         mpt3sas_port = kzalloc(sizeof(struct _sas_port),
 657             GFP_KERNEL);
 658         if (!mpt3sas_port) {
 659                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 660                     ioc->name, __FILE__, __LINE__, __func__);
 661                 return NULL;
 662         }
 663
 664         INIT_LIST_HEAD(&mpt3sas_port->port_list);
 665         INIT_LIST_HEAD(&mpt3sas_port->phy_list);
 666         spin_lock_irqsave(&ioc->sas_node_lock, flags);
 667         sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
 668         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
 669
 670         if (!sas_node) {
 671                 pr_err(MPT3SAS_FMT
 672                         "%s: Could not find parent sas_address(0x%016llx)!\n",
 673                         ioc->name, __func__, (unsigned long long)sas_address);
 674                 goto out_fail;
 675         }
 676
 677         if ((_transport_set_identify(ioc, handle,
 678             &mpt3sas_port->remote_identify))) {
 679                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 680                     ioc->name, __FILE__, __LINE__, __func__);
 681                 goto out_fail;
 682         }
 683
 684         if (mpt3sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
 685                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 686                     ioc->name, __FILE__, __LINE__, __func__);
 687                 goto out_fail;
 688         }
 689
 690         _transport_sanity_check(ioc, sas_node,
 691             mpt3sas_port->remote_identify.sas_address);
 692
 693         for (i = 0; i < sas_node->num_phys; i++) {
 694                 if (sas_node->phy[i].remote_identify.sas_address !=
 695                     mpt3sas_port->remote_identify.sas_address)
 696                         continue;
 697                 list_add_tail(&sas_node->phy[i].port_siblings,
 698                     &mpt3sas_port->phy_list);
 699                 mpt3sas_port->num_phys++;
 700         }
 701
 702         if (!mpt3sas_port->num_phys) {
 703                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 704                     ioc->name, __FILE__, __LINE__, __func__);
 705                 goto out_fail;
 706         }
 707
 708         port = sas_port_alloc_num(sas_node->parent_dev);
 709         if ((sas_port_add(port))) {
 710                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 711                     ioc->name, __FILE__, __LINE__, __func__);
 712                 goto out_fail;
 713         }
 714
 715         list_for_each_entry(mpt3sas_phy, &mpt3sas_port->phy_list,
 716             port_siblings) {
 717                 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 718                         dev_printk(KERN_INFO, &port->dev,
 719                                 "add: handle(0x%04x), sas_addr(0x%016llx), phy(%d)\n",
 720                                 handle, (unsigned long long)
 721                             mpt3sas_port->remote_identify.sas_address,
 722                             mpt3sas_phy->phy_id);
 723                 sas_port_add_phy(port, mpt3sas_phy->phy);
 724                 mpt3sas_phy->phy_belongs_to_port = 1;
 725         }
 726
 727         mpt3sas_port->port = port;
 728         if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE)
 729                 rphy = sas_end_device_alloc(port);
 730         else
 731                 rphy = sas_expander_alloc(port,
 732                     mpt3sas_port->remote_identify.device_type);
 733
 734         rphy->identify = mpt3sas_port->remote_identify;
 735
 736         if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
 737                 sas_device = mpt3sas_scsih_sas_device_find_by_sas_address(ioc,
 738                                     mpt3sas_port->remote_identify.sas_address);
 739                 if (!sas_device) {
 740                         dfailprintk(ioc, printk(MPT3SAS_FMT
 741                                 "failure at %s:%d/%s()!\n",
 742                                 ioc->name, __FILE__, __LINE__, __func__));
 743                         goto out_fail;
 744                 }
 745                 sas_device->pend_sas_rphy_add = 1;
 746         }
 747
 748         if ((sas_rphy_add(rphy))) {
 749                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 750                     ioc->name, __FILE__, __LINE__, __func__);
 751         }
 752
 753         if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE)
 754                 sas_device->pend_sas_rphy_add = 0;
 755
 756         if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 757                 dev_printk(KERN_INFO, &rphy->dev,
 758                         "add: handle(0x%04x), sas_addr(0x%016llx)\n",
 759                         handle, (unsigned long long)
 760                     mpt3sas_port->remote_identify.sas_address);
 761         mpt3sas_port->rphy = rphy;
 762         spin_lock_irqsave(&ioc->sas_node_lock, flags);
 763         list_add_tail(&mpt3sas_port->port_list, &sas_node->sas_port_list);
 764         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
 765
 766         /* fill in report manufacture */
 767         if (mpt3sas_port->remote_identify.device_type ==
 768             MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
 769             mpt3sas_port->remote_identify.device_type ==
 770             MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
 771                 _transport_expander_report_manufacture(ioc,
 772                     mpt3sas_port->remote_identify.sas_address,
 773                     rphy_to_expander_device(rphy));
 774         return mpt3sas_port;
 775
 776  out_fail:
 777         list_for_each_entry_safe(mpt3sas_phy, next, &mpt3sas_port->phy_list,
 778             port_siblings)
 779                 list_del(&mpt3sas_phy->port_siblings);
 780         kfree(mpt3sas_port);
 781         return NULL;
 782 }
 783
 784 /**
 785  * mpt3sas_transport_port_remove - remove port from the list
 786  * @ioc: per adapter object
 787  * @sas_address: sas address of attached device
 788  * @sas_address_parent: sas address of parent expander or sas host
 789  * Context: This function will acquire ioc->sas_node_lock.
 790  *
 791  * Removing object and freeing associated memory from the
 792  * ioc->sas_port_list.
 793  *
 794  * Return nothing.
 795  */
 796 void
 797 mpt3sas_transport_port_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
 798         u64 sas_address_parent)
 799 {
 800         int i;
 801         unsigned long flags;
 802         struct _sas_port *mpt3sas_port, *next;
 803         struct _sas_node *sas_node;
 804         u8 found = 0;
 805         struct _sas_phy *mpt3sas_phy, *next_phy;
 806
 807         spin_lock_irqsave(&ioc->sas_node_lock, flags);
 808         sas_node = _transport_sas_node_find_by_sas_address(ioc,
 809             sas_address_parent);
 810         if (!sas_node) {
 811                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
 812                 return;
 813         }
 814         list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list,
 815             port_list) {
 816                 if (mpt3sas_port->remote_identify.sas_address != sas_address)
 817                         continue;
 818                 found = 1;
 819                 list_del(&mpt3sas_port->port_list);
 820                 goto out;
 821         }
 822  out:
 823         if (!found) {
 824                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
 825                 return;
 826         }
 827
 828         for (i = 0; i < sas_node->num_phys; i++) {
 829                 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
 830                         memset(&sas_node->phy[i].remote_identify, 0 ,
 831                             sizeof(struct sas_identify));
 832         }
 833
 834         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
 835
 836         list_for_each_entry_safe(mpt3sas_phy, next_phy,
 837             &mpt3sas_port->phy_list, port_siblings) {
 838                 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 839                         dev_printk(KERN_INFO, &mpt3sas_port->port->dev,
 840                             "remove: sas_addr(0x%016llx), phy(%d)\n",
 841                             (unsigned long long)
 842                             mpt3sas_port->remote_identify.sas_address,
 843                             mpt3sas_phy->phy_id);
 844                 mpt3sas_phy->phy_belongs_to_port = 0;
 845                 sas_port_delete_phy(mpt3sas_port->port, mpt3sas_phy->phy);
 846                 list_del(&mpt3sas_phy->port_siblings);
 847         }
 848         sas_port_delete(mpt3sas_port->port);
 849         kfree(mpt3sas_port);
 850 }
 851
 852 /**
 853  * mpt3sas_transport_add_host_phy - report sas_host phy to transport
 854  * @ioc: per adapter object
 855  * @mpt3sas_phy: mpt3sas per phy object
 856  * @phy_pg0: sas phy page 0
 857  * @parent_dev: parent device class object
 858  *
 859  * Returns 0 for success, non-zero for failure.
 860  */
 861 int
 862 mpt3sas_transport_add_host_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
 863         *mpt3sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
 864 {
 865         struct sas_phy *phy;
 866         int phy_index = mpt3sas_phy->phy_id;
 867
 868
 869         INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
 870         phy = sas_phy_alloc(parent_dev, phy_index);
 871         if (!phy) {
 872                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 873                     ioc->name, __FILE__, __LINE__, __func__);
 874                 return -1;
 875         }
 876         if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
 877             &mpt3sas_phy->identify))) {
 878                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 879                     ioc->name, __FILE__, __LINE__, __func__);
 880                 sas_phy_free(phy);
 881                 return -1;
 882         }
 883         phy->identify = mpt3sas_phy->identify;
 884         mpt3sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
 885         if (mpt3sas_phy->attached_handle)
 886                 _transport_set_identify(ioc, mpt3sas_phy->attached_handle,
 887                     &mpt3sas_phy->remote_identify);
 888         phy->identify.phy_identifier = mpt3sas_phy->phy_id;
 889         phy->negotiated_linkrate = _transport_convert_phy_link_rate(
 890             phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
 891         phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
 892             phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
 893         phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
 894             phy_pg0.HwLinkRate >> 4);
 895         phy->minimum_linkrate = _transport_convert_phy_link_rate(
 896             phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
 897         phy->maximum_linkrate = _transport_convert_phy_link_rate(
 898             phy_pg0.ProgrammedLinkRate >> 4);
 899
 900         if ((sas_phy_add(phy))) {
 901                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 902                     ioc->name, __FILE__, __LINE__, __func__);
 903                 sas_phy_free(phy);
 904                 return -1;
 905         }
 906         if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 907                 dev_printk(KERN_INFO, &phy->dev,
 908                     "add: handle(0x%04x), sas_addr(0x%016llx)\n"
 909                     "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
 910                     mpt3sas_phy->handle, (unsigned long long)
 911                     mpt3sas_phy->identify.sas_address,
 912                     mpt3sas_phy->attached_handle,
 913                     (unsigned long long)
 914                     mpt3sas_phy->remote_identify.sas_address);
 915         mpt3sas_phy->phy = phy;
 916         return 0;
 917 }
 918
 919
 920 /**
 921  * mpt3sas_transport_add_expander_phy - report expander phy to transport
 922  * @ioc: per adapter object
 923  * @mpt3sas_phy: mpt3sas per phy object
 924  * @expander_pg1: expander page 1
 925  * @parent_dev: parent device class object
 926  *
 927  * Returns 0 for success, non-zero for failure.
 928  */
 929 int
 930 mpt3sas_transport_add_expander_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
 931         *mpt3sas_phy, Mpi2ExpanderPage1_t expander_pg1,
 932         struct device *parent_dev)
 933 {
 934         struct sas_phy *phy;
 935         int phy_index = mpt3sas_phy->phy_id;
 936
 937         INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
 938         phy = sas_phy_alloc(parent_dev, phy_index);
 939         if (!phy) {
 940                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 941                     ioc->name, __FILE__, __LINE__, __func__);
 942                 return -1;
 943         }
 944         if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
 945             &mpt3sas_phy->identify))) {
 946                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 947                     ioc->name, __FILE__, __LINE__, __func__);
 948                 sas_phy_free(phy);
 949                 return -1;
 950         }
 951         phy->identify = mpt3sas_phy->identify;
 952         mpt3sas_phy->attached_handle =
 953             le16_to_cpu(expander_pg1.AttachedDevHandle);
 954         if (mpt3sas_phy->attached_handle)
 955                 _transport_set_identify(ioc, mpt3sas_phy->attached_handle,
 956                     &mpt3sas_phy->remote_identify);
 957         phy->identify.phy_identifier = mpt3sas_phy->phy_id;
 958         phy->negotiated_linkrate = _transport_convert_phy_link_rate(
 959             expander_pg1.NegotiatedLinkRate &
 960             MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
 961         phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
 962             expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
 963         phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
 964             expander_pg1.HwLinkRate >> 4);
 965         phy->minimum_linkrate = _transport_convert_phy_link_rate(
 966             expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
 967         phy->maximum_linkrate = _transport_convert_phy_link_rate(
 968             expander_pg1.ProgrammedLinkRate >> 4);
 969
 970         if ((sas_phy_add(phy))) {
 971                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 972                     ioc->name, __FILE__, __LINE__, __func__);
 973                 sas_phy_free(phy);
 974                 return -1;
 975         }
 976         if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 977                 dev_printk(KERN_INFO, &phy->dev,
 978                     "add: handle(0x%04x), sas_addr(0x%016llx)\n"
 979                     "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
 980                     mpt3sas_phy->handle, (unsigned long long)
 981                     mpt3sas_phy->identify.sas_address,
 982                     mpt3sas_phy->attached_handle,
 983                     (unsigned long long)
 984                     mpt3sas_phy->remote_identify.sas_address);
 985         mpt3sas_phy->phy = phy;
 986         return 0;
 987 }
 988
 989 /**
 990  * mpt3sas_transport_update_links - refreshing phy link changes
 991  * @ioc: per adapter object
 992  * @sas_address: sas address of parent expander or sas host
 993  * @handle: attached device handle
 994  * @phy_numberv: phy number
 995  * @link_rate: new link rate
 996  *
 997  * Returns nothing.
 998  */
 999 void
1000 mpt3sas_transport_update_links(struct MPT3SAS_ADAPTER *ioc,
1001         u64 sas_address, u16 handle, u8 phy_number, u8 link_rate)
1002 {
1003         unsigned long flags;
1004         struct _sas_node *sas_node;
1005         struct _sas_phy *mpt3sas_phy;
1006
1007         if (ioc->shost_recovery || ioc->pci_error_recovery)
1008                 return;
1009
1010         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1011         sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
1012         if (!sas_node) {
1013                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1014                 return;
1015         }
1016
1017         mpt3sas_phy = &sas_node->phy[phy_number];
1018         mpt3sas_phy->attached_handle = handle;
1019         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1020         if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
1021                 _transport_set_identify(ioc, handle,
1022                     &mpt3sas_phy->remote_identify);
1023                 _transport_add_phy_to_an_existing_port(ioc, sas_node,
1024                     mpt3sas_phy, mpt3sas_phy->remote_identify.sas_address);
1025         } else
1026                 memset(&mpt3sas_phy->remote_identify, 0 , sizeof(struct
1027                     sas_identify));
1028
1029         if (mpt3sas_phy->phy)
1030                 mpt3sas_phy->phy->negotiated_linkrate =
1031                     _transport_convert_phy_link_rate(link_rate);
1032
1033         if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1034                 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
1035                     "refresh: parent sas_addr(0x%016llx),\n"
1036                     "\tlink_rate(0x%02x), phy(%d)\n"
1037                     "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1038                     (unsigned long long)sas_address,
1039                     link_rate, phy_number, handle, (unsigned long long)
1040                     mpt3sas_phy->remote_identify.sas_address);
1041 }
1042
1043 static inline void *
1044 phy_to_ioc(struct sas_phy *phy)
1045 {
1046         struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1047         return shost_priv(shost);
1048 }
1049
1050 static inline void *
1051 rphy_to_ioc(struct sas_rphy *rphy)
1052 {
1053         struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1054         return shost_priv(shost);
1055 }
1056
1057 /* report phy error log structure */
1058 struct phy_error_log_request {
1059         u8 smp_frame_type; /* 0x40 */
1060         u8 function; /* 0x11 */
1061         u8 allocated_response_length;
1062         u8 request_length; /* 02 */
1063         u8 reserved_1[5];
1064         u8 phy_identifier;
1065         u8 reserved_2[2];
1066 };
1067
1068 /* report phy error log reply structure */
1069 struct phy_error_log_reply {
1070         u8 smp_frame_type; /* 0x41 */
1071         u8 function; /* 0x11 */
1072         u8 function_result;
1073         u8 response_length;
1074         __be16 expander_change_count;
1075         u8 reserved_1[3];
1076         u8 phy_identifier;
1077         u8 reserved_2[2];
1078         __be32 invalid_dword;
1079         __be32 running_disparity_error;
1080         __be32 loss_of_dword_sync;
1081         __be32 phy_reset_problem;
1082 };
1083
1084 /**
1085  * _transport_get_expander_phy_error_log - return expander counters
1086  * @ioc: per adapter object
1087  * @phy: The sas phy object
1088  *
1089  * Returns 0 for success, non-zero for failure.
1090  *
1091  */
1092 static int
1093 _transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER *ioc,
1094         struct sas_phy *phy)
1095 {
1096         Mpi2SmpPassthroughRequest_t *mpi_request;
1097         Mpi2SmpPassthroughReply_t *mpi_reply;
1098         struct phy_error_log_request *phy_error_log_request;
1099         struct phy_error_log_reply *phy_error_log_reply;
1100         int rc;
1101         u16 smid;
1102         u32 ioc_state;
1103         unsigned long timeleft;
1104         void *psge;
1105         u8 issue_reset = 0;
1106         void *data_out = NULL;
1107         dma_addr_t data_out_dma;
1108         u32 sz;
1109         u16 wait_state_count;
1110
1111         if (ioc->shost_recovery || ioc->pci_error_recovery) {
1112                 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
1113                     __func__, ioc->name);
1114                 return -EFAULT;
1115         }
1116
1117         mutex_lock(&ioc->transport_cmds.mutex);
1118
1119         if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1120                 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n",
1121                     ioc->name, __func__);
1122                 rc = -EAGAIN;
1123                 goto out;
1124         }
1125         ioc->transport_cmds.status = MPT3_CMD_PENDING;
1126
1127         wait_state_count = 0;
1128         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1129         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1130                 if (wait_state_count++ == 10) {
1131                         pr_err(MPT3SAS_FMT
1132                             "%s: failed due to ioc not operational\n",
1133                             ioc->name, __func__);
1134                         rc = -EFAULT;
1135                         goto out;
1136                 }
1137                 ssleep(1);
1138                 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1139                 pr_info(MPT3SAS_FMT
1140                         "%s: waiting for operational state(count=%d)\n",
1141                         ioc->name, __func__, wait_state_count);
1142         }
1143         if (wait_state_count)
1144                 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
1145                     ioc->name, __func__);
1146
1147         smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1148         if (!smid) {
1149                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
1150                     ioc->name, __func__);
1151                 rc = -EAGAIN;
1152                 goto out;
1153         }
1154
1155         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1156         ioc->transport_cmds.smid = smid;
1157
1158         sz = sizeof(struct phy_error_log_request) +
1159             sizeof(struct phy_error_log_reply);
1160         data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
1161         if (!data_out) {
1162                 pr_err("failure at %s:%d/%s()!\n", __FILE__,
1163                     __LINE__, __func__);
1164                 rc = -ENOMEM;
1165                 mpt3sas_base_free_smid(ioc, smid);
1166                 goto out;
1167         }
1168
1169         rc = -EINVAL;
1170         memset(data_out, 0, sz);
1171         phy_error_log_request = data_out;
1172         phy_error_log_request->smp_frame_type = 0x40;
1173         phy_error_log_request->function = 0x11;
1174         phy_error_log_request->request_length = 2;
1175         phy_error_log_request->allocated_response_length = 0;
1176         phy_error_log_request->phy_identifier = phy->number;
1177
1178         memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1179         mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1180         mpi_request->PhysicalPort = 0xFF;
1181         mpi_request->VF_ID = 0; /* TODO */
1182         mpi_request->VP_ID = 0;
1183         mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1184         mpi_request->RequestDataLength =
1185             cpu_to_le16(sizeof(struct phy_error_log_request));
1186         psge = &mpi_request->SGL;
1187
1188         ioc->build_sg(ioc, psge, data_out_dma,
1189                 sizeof(struct phy_error_log_request),
1190             data_out_dma + sizeof(struct phy_error_log_request),
1191             sizeof(struct phy_error_log_reply));
1192
1193         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1194                 "phy_error_log - send to sas_addr(0x%016llx), phy(%d)\n",
1195                 ioc->name, (unsigned long long)phy->identify.sas_address,
1196                 phy->number));
1197         init_completion(&ioc->transport_cmds.done);
1198         mpt3sas_base_put_smid_default(ioc, smid);
1199         timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1200             10*HZ);
1201
1202         if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1203                 pr_err(MPT3SAS_FMT "%s: timeout\n",
1204                     ioc->name, __func__);
1205                 _debug_dump_mf(mpi_request,
1206                     sizeof(Mpi2SmpPassthroughRequest_t)/4);
1207                 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1208                         issue_reset = 1;
1209                 goto issue_host_reset;
1210         }
1211
1212         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1213                 "phy_error_log - complete\n", ioc->name));
1214
1215         if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1216
1217                 mpi_reply = ioc->transport_cmds.reply;
1218
1219                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1220                     "phy_error_log - reply data transfer size(%d)\n",
1221                     ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
1222
1223                 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1224                     sizeof(struct phy_error_log_reply))
1225                         goto out;
1226
1227                 phy_error_log_reply = data_out +
1228                     sizeof(struct phy_error_log_request);
1229
1230                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1231                     "phy_error_log - function_result(%d)\n",
1232                     ioc->name, phy_error_log_reply->function_result));
1233
1234                 phy->invalid_dword_count =
1235                     be32_to_cpu(phy_error_log_reply->invalid_dword);
1236                 phy->running_disparity_error_count =
1237                     be32_to_cpu(phy_error_log_reply->running_disparity_error);
1238                 phy->loss_of_dword_sync_count =
1239                     be32_to_cpu(phy_error_log_reply->loss_of_dword_sync);
1240                 phy->phy_reset_problem_count =
1241                     be32_to_cpu(phy_error_log_reply->phy_reset_problem);
1242                 rc = 0;
1243         } else
1244                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1245                     "phy_error_log - no reply\n", ioc->name));
1246
1247  issue_host_reset:
1248         if (issue_reset)
1249                 mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1250                     FORCE_BIG_HAMMER);
1251  out:
1252         ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1253         if (data_out)
1254                 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
1255
1256         mutex_unlock(&ioc->transport_cmds.mutex);
1257         return rc;
1258 }
1259
1260 /**
1261  * _transport_get_linkerrors - return phy counters for both hba and expanders
1262  * @phy: The sas phy object
1263  *
1264  * Returns 0 for success, non-zero for failure.
1265  *
1266  */
1267 static int
1268 _transport_get_linkerrors(struct sas_phy *phy)
1269 {
1270         struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1271         unsigned long flags;
1272         Mpi2ConfigReply_t mpi_reply;
1273         Mpi2SasPhyPage1_t phy_pg1;
1274
1275         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1276         if (_transport_sas_node_find_by_sas_address(ioc,
1277             phy->identify.sas_address) == NULL) {
1278                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1279                 return -EINVAL;
1280         }
1281         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1282
1283         if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1284                 return _transport_get_expander_phy_error_log(ioc, phy);
1285
1286         /* get hba phy error logs */
1287         if ((mpt3sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
1288                     phy->number))) {
1289                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1290                     ioc->name, __FILE__, __LINE__, __func__);
1291                 return -ENXIO;
1292         }
1293
1294         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1295                 pr_info(MPT3SAS_FMT
1296                         "phy(%d), ioc_status (0x%04x), loginfo(0x%08x)\n",
1297                         ioc->name, phy->number,
1298                         le16_to_cpu(mpi_reply.IOCStatus),
1299                     le32_to_cpu(mpi_reply.IOCLogInfo));
1300
1301         phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
1302         phy->running_disparity_error_count =
1303             le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
1304         phy->loss_of_dword_sync_count =
1305             le32_to_cpu(phy_pg1.LossDwordSynchCount);
1306         phy->phy_reset_problem_count =
1307             le32_to_cpu(phy_pg1.PhyResetProblemCount);
1308         return 0;
1309 }
1310
1311 /**
1312  * _transport_get_enclosure_identifier -
1313  * @phy: The sas phy object
1314  *
1315  * Obtain the enclosure logical id for an expander.
1316  * Returns 0 for success, non-zero for failure.
1317  */
1318 static int
1319 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
1320 {
1321         struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1322         struct _sas_device *sas_device;
1323         unsigned long flags;
1324         int rc;
1325
1326         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1327         sas_device = mpt3sas_scsih_sas_device_find_by_sas_address(ioc,
1328             rphy->identify.sas_address);
1329         if (sas_device) {
1330                 *identifier = sas_device->enclosure_logical_id;
1331                 rc = 0;
1332         } else {
1333                 *identifier = 0;
1334                 rc = -ENXIO;
1335         }
1336         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1337         return rc;
1338 }
1339
1340 /**
1341  * _transport_get_bay_identifier -
1342  * @phy: The sas phy object
1343  *
1344  * Returns the slot id for a device that resides inside an enclosure.
1345  */
1346 static int
1347 _transport_get_bay_identifier(struct sas_rphy *rphy)
1348 {
1349         struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1350         struct _sas_device *sas_device;
1351         unsigned long flags;
1352         int rc;
1353
1354         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1355         sas_device = mpt3sas_scsih_sas_device_find_by_sas_address(ioc,
1356             rphy->identify.sas_address);
1357         if (sas_device)
1358                 rc = sas_device->slot;
1359         else
1360                 rc = -ENXIO;
1361         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1362         return rc;
1363 }
1364
1365 /* phy control request structure */
1366 struct phy_control_request {
1367         u8 smp_frame_type; /* 0x40 */
1368         u8 function; /* 0x91 */
1369         u8 allocated_response_length;
1370         u8 request_length; /* 0x09 */
1371         u16 expander_change_count;
1372         u8 reserved_1[3];
1373         u8 phy_identifier;
1374         u8 phy_operation;
1375         u8 reserved_2[13];
1376         u64 attached_device_name;
1377         u8 programmed_min_physical_link_rate;
1378         u8 programmed_max_physical_link_rate;
1379         u8 reserved_3[6];
1380 };
1381
1382 /* phy control reply structure */
1383 struct phy_control_reply {
1384         u8 smp_frame_type; /* 0x41 */
1385         u8 function; /* 0x11 */
1386         u8 function_result;
1387         u8 response_length;
1388 };
1389
1390 #define SMP_PHY_CONTROL_LINK_RESET      (0x01)
1391 #define SMP_PHY_CONTROL_HARD_RESET      (0x02)
1392 #define SMP_PHY_CONTROL_DISABLE         (0x03)
1393
1394 /**
1395  * _transport_expander_phy_control - expander phy control
1396  * @ioc: per adapter object
1397  * @phy: The sas phy object
1398  *
1399  * Returns 0 for success, non-zero for failure.
1400  *
1401  */
1402 static int
1403 _transport_expander_phy_control(struct MPT3SAS_ADAPTER *ioc,
1404         struct sas_phy *phy, u8 phy_operation)
1405 {
1406         Mpi2SmpPassthroughRequest_t *mpi_request;
1407         Mpi2SmpPassthroughReply_t *mpi_reply;
1408         struct phy_control_request *phy_control_request;
1409         struct phy_control_reply *phy_control_reply;
1410         int rc;
1411         u16 smid;
1412         u32 ioc_state;
1413         unsigned long timeleft;
1414         void *psge;
1415         u32 sgl_flags;
1416         u8 issue_reset = 0;
1417         void *data_out = NULL;
1418         dma_addr_t data_out_dma;
1419         u32 sz;
1420         u16 wait_state_count;
1421
1422         if (ioc->shost_recovery || ioc->pci_error_recovery) {
1423                 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
1424                     __func__, ioc->name);
1425                 return -EFAULT;
1426         }
1427
1428         mutex_lock(&ioc->transport_cmds.mutex);
1429
1430         if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1431                 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n",
1432                     ioc->name, __func__);
1433                 rc = -EAGAIN;
1434                 goto out;
1435         }
1436         ioc->transport_cmds.status = MPT3_CMD_PENDING;
1437
1438         wait_state_count = 0;
1439         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1440         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1441                 if (wait_state_count++ == 10) {
1442                         pr_err(MPT3SAS_FMT
1443                             "%s: failed due to ioc not operational\n",
1444                             ioc->name, __func__);
1445                         rc = -EFAULT;
1446                         goto out;
1447                 }
1448                 ssleep(1);
1449                 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1450                 pr_info(MPT3SAS_FMT
1451                         "%s: waiting for operational state(count=%d)\n",
1452                         ioc->name, __func__, wait_state_count);
1453         }
1454         if (wait_state_count)
1455                 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
1456                     ioc->name, __func__);
1457
1458         smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1459         if (!smid) {
1460                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
1461                     ioc->name, __func__);
1462                 rc = -EAGAIN;
1463                 goto out;
1464         }
1465
1466         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1467         ioc->transport_cmds.smid = smid;
1468
1469         sz = sizeof(struct phy_control_request) +
1470             sizeof(struct phy_control_reply);
1471         data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
1472         if (!data_out) {
1473                 pr_err("failure at %s:%d/%s()!\n", __FILE__,
1474                     __LINE__, __func__);
1475                 rc = -ENOMEM;
1476                 mpt3sas_base_free_smid(ioc, smid);
1477                 goto out;
1478         }
1479
1480         rc = -EINVAL;
1481         memset(data_out, 0, sz);
1482         phy_control_request = data_out;
1483         phy_control_request->smp_frame_type = 0x40;
1484         phy_control_request->function = 0x91;
1485         phy_control_request->request_length = 9;
1486         phy_control_request->allocated_response_length = 0;
1487         phy_control_request->phy_identifier = phy->number;
1488         phy_control_request->phy_operation = phy_operation;
1489         phy_control_request->programmed_min_physical_link_rate =
1490             phy->minimum_linkrate << 4;
1491         phy_control_request->programmed_max_physical_link_rate =
1492             phy->maximum_linkrate << 4;
1493
1494         memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1495         mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1496         mpi_request->PhysicalPort = 0xFF;
1497         mpi_request->VF_ID = 0; /* TODO */
1498         mpi_request->VP_ID = 0;
1499         mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1500         mpi_request->RequestDataLength =
1501             cpu_to_le16(sizeof(struct phy_error_log_request));
1502         psge = &mpi_request->SGL;
1503
1504         /* WRITE sgel first */
1505         sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1506             MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
1507         sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1508         ioc->base_add_sg_single(psge, sgl_flags |
1509             sizeof(struct phy_control_request), data_out_dma);
1510
1511         /* incr sgel */
1512         psge += ioc->sge_size;
1513
1514         /* READ sgel last */
1515         sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1516             MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1517             MPI2_SGE_FLAGS_END_OF_LIST);
1518         sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1519         ioc->base_add_sg_single(psge, sgl_flags |
1520             sizeof(struct phy_control_reply), data_out_dma +
1521             sizeof(struct phy_control_request));
1522
1523         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1524                 "phy_control - send to sas_addr(0x%016llx), phy(%d), opcode(%d)\n",
1525                 ioc->name, (unsigned long long)phy->identify.sas_address,
1526                 phy->number, phy_operation));
1527         init_completion(&ioc->transport_cmds.done);
1528         mpt3sas_base_put_smid_default(ioc, smid);
1529         timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1530             10*HZ);
1531
1532         if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1533                 pr_err(MPT3SAS_FMT "%s: timeout\n",
1534                     ioc->name, __func__);
1535                 _debug_dump_mf(mpi_request,
1536                     sizeof(Mpi2SmpPassthroughRequest_t)/4);
1537                 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1538                         issue_reset = 1;
1539                 goto issue_host_reset;
1540         }
1541
1542         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1543                 "phy_control - complete\n", ioc->name));
1544
1545         if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1546
1547                 mpi_reply = ioc->transport_cmds.reply;
1548
1549                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1550                     "phy_control - reply data transfer size(%d)\n",
1551                     ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
1552
1553                 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1554                     sizeof(struct phy_control_reply))
1555                         goto out;
1556
1557                 phy_control_reply = data_out +
1558                     sizeof(struct phy_control_request);
1559
1560                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1561                     "phy_control - function_result(%d)\n",
1562                     ioc->name, phy_control_reply->function_result));
1563
1564                 rc = 0;
1565         } else
1566                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1567                     "phy_control - no reply\n", ioc->name));
1568
1569  issue_host_reset:
1570         if (issue_reset)
1571                 mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1572                     FORCE_BIG_HAMMER);
1573  out:
1574         ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1575         if (data_out)
1576                 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
1577
1578         mutex_unlock(&ioc->transport_cmds.mutex);
1579         return rc;
1580 }
1581
1582 /**
1583  * _transport_phy_reset -
1584  * @phy: The sas phy object
1585  * @hard_reset:
1586  *
1587  * Returns 0 for success, non-zero for failure.
1588  */
1589 static int
1590 _transport_phy_reset(struct sas_phy *phy, int hard_reset)
1591 {
1592         struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1593         Mpi2SasIoUnitControlReply_t mpi_reply;
1594         Mpi2SasIoUnitControlRequest_t mpi_request;
1595         unsigned long flags;
1596
1597         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1598         if (_transport_sas_node_find_by_sas_address(ioc,
1599             phy->identify.sas_address) == NULL) {
1600                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1601                 return -EINVAL;
1602         }
1603         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1604
1605         /* handle expander phys */
1606         if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1607                 return _transport_expander_phy_control(ioc, phy,
1608                     (hard_reset == 1) ? SMP_PHY_CONTROL_HARD_RESET :
1609                     SMP_PHY_CONTROL_LINK_RESET);
1610
1611         /* handle hba phys */
1612         memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t));
1613         mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
1614         mpi_request.Operation = hard_reset ?
1615             MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1616         mpi_request.PhyNum = phy->number;
1617
1618         if ((mpt3sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
1619                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1620                     ioc->name, __FILE__, __LINE__, __func__);
1621                 return -ENXIO;
1622         }
1623
1624         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1625                 pr_info(MPT3SAS_FMT
1626                 "phy(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
1627                 ioc->name, phy->number, le16_to_cpu(mpi_reply.IOCStatus),
1628                     le32_to_cpu(mpi_reply.IOCLogInfo));
1629
1630         return 0;
1631 }
1632
1633 /**
1634  * _transport_phy_enable - enable/disable phys
1635  * @phy: The sas phy object
1636  * @enable: enable phy when true
1637  *
1638  * Only support sas_host direct attached phys.
1639  * Returns 0 for success, non-zero for failure.
1640  */
1641 static int
1642 _transport_phy_enable(struct sas_phy *phy, int enable)
1643 {
1644         struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1645         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1646         Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
1647         Mpi2ConfigReply_t mpi_reply;
1648         u16 ioc_status;
1649         u16 sz;
1650         int rc = 0;
1651         unsigned long flags;
1652         int i, discovery_active;
1653
1654         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1655         if (_transport_sas_node_find_by_sas_address(ioc,
1656             phy->identify.sas_address) == NULL) {
1657                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1658                 return -EINVAL;
1659         }
1660         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1661
1662         /* handle expander phys */
1663         if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1664                 return _transport_expander_phy_control(ioc, phy,
1665                     (enable == 1) ? SMP_PHY_CONTROL_LINK_RESET :
1666                     SMP_PHY_CONTROL_DISABLE);
1667
1668         /* handle hba phys */
1669
1670         /* read sas_iounit page 0 */
1671         sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
1672             sizeof(Mpi2SasIOUnit0PhyData_t));
1673         sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
1674         if (!sas_iounit_pg0) {
1675                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1676                     ioc->name, __FILE__, __LINE__, __func__);
1677                 rc = -ENOMEM;
1678                 goto out;
1679         }
1680         if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
1681             sas_iounit_pg0, sz))) {
1682                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1683                     ioc->name, __FILE__, __LINE__, __func__);
1684                 rc = -ENXIO;
1685                 goto out;
1686         }
1687         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1688             MPI2_IOCSTATUS_MASK;
1689         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1690                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1691                     ioc->name, __FILE__, __LINE__, __func__);
1692                 rc = -EIO;
1693                 goto out;
1694         }
1695
1696         /* unable to enable/disable phys when when discovery is active */
1697         for (i = 0, discovery_active = 0; i < ioc->sas_hba.num_phys ; i++) {
1698                 if (sas_iounit_pg0->PhyData[i].PortFlags &
1699                     MPI2_SASIOUNIT0_PORTFLAGS_DISCOVERY_IN_PROGRESS) {
1700                         pr_err(MPT3SAS_FMT "discovery is active on " \
1701                             "port = %d, phy = %d: unable to enable/disable "
1702                             "phys, try again later!\n", ioc->name,
1703                             sas_iounit_pg0->PhyData[i].Port, i);
1704                         discovery_active = 1;
1705                 }
1706         }
1707
1708         if (discovery_active) {
1709                 rc = -EAGAIN;
1710                 goto out;
1711         }
1712
1713         /* read sas_iounit page 1 */
1714         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1715             sizeof(Mpi2SasIOUnit1PhyData_t));
1716         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1717         if (!sas_iounit_pg1) {
1718                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1719                     ioc->name, __FILE__, __LINE__, __func__);
1720                 rc = -ENOMEM;
1721                 goto out;
1722         }
1723         if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1724             sas_iounit_pg1, sz))) {
1725                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1726                     ioc->name, __FILE__, __LINE__, __func__);
1727                 rc = -ENXIO;
1728                 goto out;
1729         }
1730         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1731             MPI2_IOCSTATUS_MASK;
1732         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1733                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1734                     ioc->name, __FILE__, __LINE__, __func__);
1735                 rc = -EIO;
1736                 goto out;
1737         }
1738
1739         /* copy Port/PortFlags/PhyFlags from page 0 */
1740         for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
1741                 sas_iounit_pg1->PhyData[i].Port =
1742                     sas_iounit_pg0->PhyData[i].Port;
1743                 sas_iounit_pg1->PhyData[i].PortFlags =
1744                     (sas_iounit_pg0->PhyData[i].PortFlags &
1745                     MPI2_SASIOUNIT0_PORTFLAGS_AUTO_PORT_CONFIG);
1746                 sas_iounit_pg1->PhyData[i].PhyFlags =
1747                     (sas_iounit_pg0->PhyData[i].PhyFlags &
1748                     (MPI2_SASIOUNIT0_PHYFLAGS_ZONING_ENABLED +
1749                     MPI2_SASIOUNIT0_PHYFLAGS_PHY_DISABLED));
1750         }
1751
1752         if (enable)
1753                 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1754                     &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1755         else
1756                 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1757                     |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1758
1759         mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
1760
1761         /* link reset */
1762         if (enable)
1763                 _transport_phy_reset(phy, 0);
1764
1765  out:
1766         kfree(sas_iounit_pg1);
1767         kfree(sas_iounit_pg0);
1768         return rc;
1769 }
1770
1771 /**
1772  * _transport_phy_speed - set phy min/max link rates
1773  * @phy: The sas phy object
1774  * @rates: rates defined in sas_phy_linkrates
1775  *
1776  * Only support sas_host direct attached phys.
1777  * Returns 0 for success, non-zero for failure.
1778  */
1779 static int
1780 _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
1781 {
1782         struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1783         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1784         Mpi2SasPhyPage0_t phy_pg0;
1785         Mpi2ConfigReply_t mpi_reply;
1786         u16 ioc_status;
1787         u16 sz;
1788         int i;
1789         int rc = 0;
1790         unsigned long flags;
1791
1792         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1793         if (_transport_sas_node_find_by_sas_address(ioc,
1794             phy->identify.sas_address) == NULL) {
1795                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1796                 return -EINVAL;
1797         }
1798         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1799
1800         if (!rates->minimum_linkrate)
1801                 rates->minimum_linkrate = phy->minimum_linkrate;
1802         else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
1803                 rates->minimum_linkrate = phy->minimum_linkrate_hw;
1804
1805         if (!rates->maximum_linkrate)
1806                 rates->maximum_linkrate = phy->maximum_linkrate;
1807         else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
1808                 rates->maximum_linkrate = phy->maximum_linkrate_hw;
1809
1810         /* handle expander phys */
1811         if (phy->identify.sas_address != ioc->sas_hba.sas_address) {
1812                 phy->minimum_linkrate = rates->minimum_linkrate;
1813                 phy->maximum_linkrate = rates->maximum_linkrate;
1814                 return _transport_expander_phy_control(ioc, phy,
1815                     SMP_PHY_CONTROL_LINK_RESET);
1816         }
1817
1818         /* handle hba phys */
1819
1820         /* sas_iounit page 1 */
1821         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1822             sizeof(Mpi2SasIOUnit1PhyData_t));
1823         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1824         if (!sas_iounit_pg1) {
1825                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1826                     ioc->name, __FILE__, __LINE__, __func__);
1827                 rc = -ENOMEM;
1828                 goto out;
1829         }
1830         if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1831             sas_iounit_pg1, sz))) {
1832                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1833                     ioc->name, __FILE__, __LINE__, __func__);
1834                 rc = -ENXIO;
1835                 goto out;
1836         }
1837         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1838             MPI2_IOCSTATUS_MASK;
1839         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1840                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1841                     ioc->name, __FILE__, __LINE__, __func__);
1842                 rc = -EIO;
1843                 goto out;
1844         }
1845
1846         for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1847                 if (phy->number != i) {
1848                         sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1849                             (ioc->sas_hba.phy[i].phy->minimum_linkrate +
1850                             (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
1851                 } else {
1852                         sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1853                             (rates->minimum_linkrate +
1854                             (rates->maximum_linkrate << 4));
1855                 }
1856         }
1857
1858         if (mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
1859             sz)) {
1860                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1861                     ioc->name, __FILE__, __LINE__, __func__);
1862                 rc = -ENXIO;
1863                 goto out;
1864         }
1865
1866         /* link reset */
1867         _transport_phy_reset(phy, 0);
1868
1869         /* read phy page 0, then update the rates in the sas transport phy */
1870         if (!mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1871             phy->number)) {
1872                 phy->minimum_linkrate = _transport_convert_phy_link_rate(
1873                     phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1874                 phy->maximum_linkrate = _transport_convert_phy_link_rate(
1875                     phy_pg0.ProgrammedLinkRate >> 4);
1876                 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1877                     phy_pg0.NegotiatedLinkRate &
1878                     MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1879         }
1880
1881  out:
1882         kfree(sas_iounit_pg1);
1883         return rc;
1884 }
1885
1886 /**
1887  * _transport_smp_handler - transport portal for smp passthru
1888  * @shost: shost object
1889  * @rphy: sas transport rphy object
1890  * @req:
1891  *
1892  * This used primarily for smp_utils.
1893  * Example:
1894  *           smp_rep_general /sys/class/bsg/expander-5:0
1895  */
1896 static int
1897 _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
1898         struct request *req)
1899 {
1900         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1901         Mpi2SmpPassthroughRequest_t *mpi_request;
1902         Mpi2SmpPassthroughReply_t *mpi_reply;
1903         int rc;
1904         u16 smid;
1905         u32 ioc_state;
1906         unsigned long timeleft;
1907         void *psge;
1908         u8 issue_reset = 0;
1909         dma_addr_t dma_addr_in = 0;
1910         dma_addr_t dma_addr_out = 0;
1911         dma_addr_t pci_dma_in = 0;
1912         dma_addr_t pci_dma_out = 0;
1913         void *pci_addr_in = NULL;
1914         void *pci_addr_out = NULL;
1915         u16 wait_state_count;
1916         struct request *rsp = req->next_rq;
1917         struct bio_vec bvec;
1918         struct bvec_iter iter;
1919
1920         if (!rsp) {
1921                 pr_err(MPT3SAS_FMT "%s: the smp response space is missing\n",
1922                         ioc->name, __func__);
1923                 return -EINVAL;
1924         }
1925
1926         if (ioc->shost_recovery || ioc->pci_error_recovery) {
1927                 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
1928                     __func__, ioc->name);
1929                 return -EFAULT;
1930         }
1931
1932         rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
1933         if (rc)
1934                 return rc;
1935
1936         if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1937                 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n", ioc->name,
1938                     __func__);
1939                 rc = -EAGAIN;
1940                 goto out;
1941         }
1942         ioc->transport_cmds.status = MPT3_CMD_PENDING;
1943
1944         /* Check if the request is split across multiple segments */
1945         if (bio_multiple_segments(req->bio)) {
1946                 u32 offset = 0;
1947
1948                 /* Allocate memory and copy the request */
1949                 pci_addr_out = pci_alloc_consistent(ioc->pdev,
1950                     blk_rq_bytes(req), &pci_dma_out);
1951                 if (!pci_addr_out) {
1952                         pr_info(MPT3SAS_FMT "%s(): PCI Addr out = NULL\n",
1953                             ioc->name, __func__);
1954                         rc = -ENOMEM;
1955                         goto out;
1956                 }
1957
1958                 bio_for_each_segment(bvec, req->bio, iter) {
1959                         memcpy(pci_addr_out + offset,
1960                             page_address(bvec.bv_page) + bvec.bv_offset,
1961                             bvec.bv_len);
1962                         offset += bvec.bv_len;
1963                 }
1964         } else {
1965                 dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
1966                     blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
1967                 if (pci_dma_mapping_error(ioc->pdev, dma_addr_out)) {
1968                         pr_info(MPT3SAS_FMT "%s(): DMA Addr out = NULL\n",
1969                             ioc->name, __func__);
1970                         rc = -ENOMEM;
1971                         goto free_pci;
1972                 }
1973         }
1974
1975         /* Check if the response needs to be populated across
1976          * multiple segments */
1977         if (bio_multiple_segments(rsp->bio)) {
1978                 pci_addr_in = pci_alloc_consistent(ioc->pdev, blk_rq_bytes(rsp),
1979                     &pci_dma_in);
1980                 if (!pci_addr_in) {
1981                         pr_info(MPT3SAS_FMT "%s(): PCI Addr in = NULL\n",
1982                             ioc->name, __func__);
1983                         rc = -ENOMEM;
1984                         goto unmap;
1985                 }
1986         } else {
1987                 dma_addr_in =  pci_map_single(ioc->pdev, bio_data(rsp->bio),
1988                     blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
1989                 if (pci_dma_mapping_error(ioc->pdev, dma_addr_in)) {
1990                         pr_info(MPT3SAS_FMT "%s(): DMA Addr in = NULL\n",
1991                             ioc->name, __func__);
1992                         rc = -ENOMEM;
1993                         goto unmap;
1994                 }
1995         }
1996
1997         wait_state_count = 0;
1998         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1999         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
2000                 if (wait_state_count++ == 10) {
2001                         pr_err(MPT3SAS_FMT
2002                             "%s: failed due to ioc not operational\n",
2003                             ioc->name, __func__);
2004                         rc = -EFAULT;
2005                         goto unmap;
2006                 }
2007                 ssleep(1);
2008                 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
2009                 pr_info(MPT3SAS_FMT
2010                         "%s: waiting for operational state(count=%d)\n",
2011                         ioc->name, __func__, wait_state_count);
2012         }
2013         if (wait_state_count)
2014                 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
2015                     ioc->name, __func__);
2016
2017         smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
2018         if (!smid) {
2019                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
2020                     ioc->name, __func__);
2021                 rc = -EAGAIN;
2022                 goto unmap;
2023         }
2024
2025         rc = 0;
2026         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2027         ioc->transport_cmds.smid = smid;
2028
2029         memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
2030         mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
2031         mpi_request->PhysicalPort = 0xFF;
2032         mpi_request->SASAddress = (rphy) ?
2033             cpu_to_le64(rphy->identify.sas_address) :
2034             cpu_to_le64(ioc->sas_hba.sas_address);
2035         mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4);
2036         psge = &mpi_request->SGL;
2037
2038         if (bio_multiple_segments(req->bio))
2039                 ioc->build_sg(ioc, psge, pci_dma_out, (blk_rq_bytes(req) - 4),
2040                     pci_dma_in, (blk_rq_bytes(rsp) + 4));
2041         else
2042                 ioc->build_sg(ioc, psge, dma_addr_out, (blk_rq_bytes(req) - 4),
2043                     dma_addr_in, (blk_rq_bytes(rsp) + 4));
2044
2045         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2046                 "%s - sending smp request\n", ioc->name, __func__));
2047
2048         init_completion(&ioc->transport_cmds.done);
2049         mpt3sas_base_put_smid_default(ioc, smid);
2050         timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
2051             10*HZ);
2052
2053         if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
2054                 pr_err(MPT3SAS_FMT "%s : timeout\n",
2055                     __func__, ioc->name);
2056                 _debug_dump_mf(mpi_request,
2057                     sizeof(Mpi2SmpPassthroughRequest_t)/4);
2058                 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
2059                         issue_reset = 1;
2060                 goto issue_host_reset;
2061         }
2062
2063         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2064                 "%s - complete\n", ioc->name, __func__));
2065
2066         if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
2067
2068                 mpi_reply = ioc->transport_cmds.reply;
2069
2070                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2071                     "%s - reply data transfer size(%d)\n",
2072                     ioc->name, __func__,
2073                     le16_to_cpu(mpi_reply->ResponseDataLength)));
2074
2075                 memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
2076                 req->sense_len = sizeof(*mpi_reply);
2077                 req->resid_len = 0;
2078                 rsp->resid_len -=
2079                     le16_to_cpu(mpi_reply->ResponseDataLength);
2080
2081                 /* check if the resp needs to be copied from the allocated
2082                  * pci mem */
2083                 if (bio_multiple_segments(rsp->bio)) {
2084                         u32 offset = 0;
2085                         u32 bytes_to_copy =
2086                             le16_to_cpu(mpi_reply->ResponseDataLength);
2087                         bio_for_each_segment(bvec, rsp->bio, iter) {
2088                                 if (bytes_to_copy <= bvec.bv_len) {
2089                                         memcpy(page_address(bvec.bv_page) +
2090                                             bvec.bv_offset, pci_addr_in +
2091                                             offset, bytes_to_copy);
2092                                         break;
2093                                 } else {
2094                                         memcpy(page_address(bvec.bv_page) +
2095                                             bvec.bv_offset, pci_addr_in +
2096                                             offset, bvec.bv_len);
2097                                         bytes_to_copy -= bvec.bv_len;
2098                                 }
2099                                 offset += bvec.bv_len;
2100                         }
2101                 }
2102         } else {
2103                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2104                     "%s - no reply\n", ioc->name, __func__));
2105                 rc = -ENXIO;
2106         }
2107
2108  issue_host_reset:
2109         if (issue_reset) {
2110                 mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2111                     FORCE_BIG_HAMMER);
2112                 rc = -ETIMEDOUT;
2113         }
2114
2115  unmap:
2116         if (dma_addr_out)
2117                 pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req),
2118                     PCI_DMA_BIDIRECTIONAL);
2119         if (dma_addr_in)
2120                 pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp),
2121                     PCI_DMA_BIDIRECTIONAL);
2122
2123  free_pci:
2124         if (pci_addr_out)
2125                 pci_free_consistent(ioc->pdev, blk_rq_bytes(req), pci_addr_out,
2126                     pci_dma_out);
2127
2128         if (pci_addr_in)
2129                 pci_free_consistent(ioc->pdev, blk_rq_bytes(rsp), pci_addr_in,
2130                     pci_dma_in);
2131
2132  out:
2133         ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
2134         mutex_unlock(&ioc->transport_cmds.mutex);
2135         return rc;
2136 }
2137
2138 struct sas_function_template mpt3sas_transport_functions = {
2139         .get_linkerrors         = _transport_get_linkerrors,
2140         .get_enclosure_identifier = _transport_get_enclosure_identifier,
2141         .get_bay_identifier     = _transport_get_bay_identifier,
2142         .phy_reset              = _transport_phy_reset,
2143         .phy_enable             = _transport_phy_enable,
2144         .set_phy_speed          = _transport_phy_speed,
2145         .smp_handler            = _transport_smp_handler,
2146 };
2147
2148 struct scsi_transport_template *mpt3sas_transport_template;