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