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         if (!sas_node->parent_dev) {
 709                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 710                     ioc->name, __FILE__, __LINE__, __func__);
 711                 goto out_fail;
 712         }
 713         port = sas_port_alloc_num(sas_node->parent_dev);
 714         if ((sas_port_add(port))) {
 715                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 716                     ioc->name, __FILE__, __LINE__, __func__);
 717                 goto out_fail;
 718         }
 719
 720         list_for_each_entry(mpt3sas_phy, &mpt3sas_port->phy_list,
 721             port_siblings) {
 722                 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 723                         dev_printk(KERN_INFO, &port->dev,
 724                                 "add: handle(0x%04x), sas_addr(0x%016llx), phy(%d)\n",
 725                                 handle, (unsigned long long)
 726                             mpt3sas_port->remote_identify.sas_address,
 727                             mpt3sas_phy->phy_id);
 728                 sas_port_add_phy(port, mpt3sas_phy->phy);
 729                 mpt3sas_phy->phy_belongs_to_port = 1;
 730         }
 731
 732         mpt3sas_port->port = port;
 733         if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE)
 734                 rphy = sas_end_device_alloc(port);
 735         else
 736                 rphy = sas_expander_alloc(port,
 737                     mpt3sas_port->remote_identify.device_type);
 738
 739         rphy->identify = mpt3sas_port->remote_identify;
 740
 741         if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
 742                 sas_device = mpt3sas_get_sdev_by_addr(ioc,
 743                                     mpt3sas_port->remote_identify.sas_address);
 744                 if (!sas_device) {
 745                         dfailprintk(ioc, printk(MPT3SAS_FMT
 746                                 "failure at %s:%d/%s()!\n",
 747                                 ioc->name, __FILE__, __LINE__, __func__));
 748                         goto out_fail;
 749                 }
 750                 sas_device->pend_sas_rphy_add = 1;
 751         }
 752
 753         if ((sas_rphy_add(rphy))) {
 754                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 755                     ioc->name, __FILE__, __LINE__, __func__);
 756         }
 757
 758         if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) {
 759                 sas_device->pend_sas_rphy_add = 0;
 760                 sas_device_put(sas_device);
 761         }
 762
 763         if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 764                 dev_printk(KERN_INFO, &rphy->dev,
 765                         "add: handle(0x%04x), sas_addr(0x%016llx)\n",
 766                         handle, (unsigned long long)
 767                     mpt3sas_port->remote_identify.sas_address);
 768         mpt3sas_port->rphy = rphy;
 769         spin_lock_irqsave(&ioc->sas_node_lock, flags);
 770         list_add_tail(&mpt3sas_port->port_list, &sas_node->sas_port_list);
 771         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
 772
 773         /* fill in report manufacture */
 774         if (mpt3sas_port->remote_identify.device_type ==
 775             MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
 776             mpt3sas_port->remote_identify.device_type ==
 777             MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
 778                 _transport_expander_report_manufacture(ioc,
 779                     mpt3sas_port->remote_identify.sas_address,
 780                     rphy_to_expander_device(rphy));
 781         return mpt3sas_port;
 782
 783  out_fail:
 784         list_for_each_entry_safe(mpt3sas_phy, next, &mpt3sas_port->phy_list,
 785             port_siblings)
 786                 list_del(&mpt3sas_phy->port_siblings);
 787         kfree(mpt3sas_port);
 788         return NULL;
 789 }
 790
 791 /**
 792  * mpt3sas_transport_port_remove - remove port from the list
 793  * @ioc: per adapter object
 794  * @sas_address: sas address of attached device
 795  * @sas_address_parent: sas address of parent expander or sas host
 796  * Context: This function will acquire ioc->sas_node_lock.
 797  *
 798  * Removing object and freeing associated memory from the
 799  * ioc->sas_port_list.
 800  *
 801  * Return nothing.
 802  */
 803 void
 804 mpt3sas_transport_port_remove(struct MPT3SAS_ADAPTER *ioc, u64 sas_address,
 805         u64 sas_address_parent)
 806 {
 807         int i;
 808         unsigned long flags;
 809         struct _sas_port *mpt3sas_port, *next;
 810         struct _sas_node *sas_node;
 811         u8 found = 0;
 812         struct _sas_phy *mpt3sas_phy, *next_phy;
 813
 814         spin_lock_irqsave(&ioc->sas_node_lock, flags);
 815         sas_node = _transport_sas_node_find_by_sas_address(ioc,
 816             sas_address_parent);
 817         if (!sas_node) {
 818                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
 819                 return;
 820         }
 821         list_for_each_entry_safe(mpt3sas_port, next, &sas_node->sas_port_list,
 822             port_list) {
 823                 if (mpt3sas_port->remote_identify.sas_address != sas_address)
 824                         continue;
 825                 found = 1;
 826                 list_del(&mpt3sas_port->port_list);
 827                 goto out;
 828         }
 829  out:
 830         if (!found) {
 831                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
 832                 return;
 833         }
 834
 835         for (i = 0; i < sas_node->num_phys; i++) {
 836                 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
 837                         memset(&sas_node->phy[i].remote_identify, 0 ,
 838                             sizeof(struct sas_identify));
 839         }
 840
 841         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
 842
 843         list_for_each_entry_safe(mpt3sas_phy, next_phy,
 844             &mpt3sas_port->phy_list, port_siblings) {
 845                 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 846                         dev_printk(KERN_INFO, &mpt3sas_port->port->dev,
 847                             "remove: sas_addr(0x%016llx), phy(%d)\n",
 848                             (unsigned long long)
 849                             mpt3sas_port->remote_identify.sas_address,
 850                             mpt3sas_phy->phy_id);
 851                 mpt3sas_phy->phy_belongs_to_port = 0;
 852                 sas_port_delete_phy(mpt3sas_port->port, mpt3sas_phy->phy);
 853                 list_del(&mpt3sas_phy->port_siblings);
 854         }
 855         sas_port_delete(mpt3sas_port->port);
 856         kfree(mpt3sas_port);
 857 }
 858
 859 /**
 860  * mpt3sas_transport_add_host_phy - report sas_host phy to transport
 861  * @ioc: per adapter object
 862  * @mpt3sas_phy: mpt3sas per phy object
 863  * @phy_pg0: sas phy page 0
 864  * @parent_dev: parent device class object
 865  *
 866  * Returns 0 for success, non-zero for failure.
 867  */
 868 int
 869 mpt3sas_transport_add_host_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
 870         *mpt3sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
 871 {
 872         struct sas_phy *phy;
 873         int phy_index = mpt3sas_phy->phy_id;
 874
 875
 876         INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
 877         phy = sas_phy_alloc(parent_dev, phy_index);
 878         if (!phy) {
 879                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 880                     ioc->name, __FILE__, __LINE__, __func__);
 881                 return -1;
 882         }
 883         if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
 884             &mpt3sas_phy->identify))) {
 885                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 886                     ioc->name, __FILE__, __LINE__, __func__);
 887                 sas_phy_free(phy);
 888                 return -1;
 889         }
 890         phy->identify = mpt3sas_phy->identify;
 891         mpt3sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
 892         if (mpt3sas_phy->attached_handle)
 893                 _transport_set_identify(ioc, mpt3sas_phy->attached_handle,
 894                     &mpt3sas_phy->remote_identify);
 895         phy->identify.phy_identifier = mpt3sas_phy->phy_id;
 896         phy->negotiated_linkrate = _transport_convert_phy_link_rate(
 897             phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
 898         phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
 899             phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
 900         phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
 901             phy_pg0.HwLinkRate >> 4);
 902         phy->minimum_linkrate = _transport_convert_phy_link_rate(
 903             phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
 904         phy->maximum_linkrate = _transport_convert_phy_link_rate(
 905             phy_pg0.ProgrammedLinkRate >> 4);
 906
 907         if ((sas_phy_add(phy))) {
 908                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 909                     ioc->name, __FILE__, __LINE__, __func__);
 910                 sas_phy_free(phy);
 911                 return -1;
 912         }
 913         if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 914                 dev_printk(KERN_INFO, &phy->dev,
 915                     "add: handle(0x%04x), sas_addr(0x%016llx)\n"
 916                     "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
 917                     mpt3sas_phy->handle, (unsigned long long)
 918                     mpt3sas_phy->identify.sas_address,
 919                     mpt3sas_phy->attached_handle,
 920                     (unsigned long long)
 921                     mpt3sas_phy->remote_identify.sas_address);
 922         mpt3sas_phy->phy = phy;
 923         return 0;
 924 }
 925
 926
 927 /**
 928  * mpt3sas_transport_add_expander_phy - report expander phy to transport
 929  * @ioc: per adapter object
 930  * @mpt3sas_phy: mpt3sas per phy object
 931  * @expander_pg1: expander page 1
 932  * @parent_dev: parent device class object
 933  *
 934  * Returns 0 for success, non-zero for failure.
 935  */
 936 int
 937 mpt3sas_transport_add_expander_phy(struct MPT3SAS_ADAPTER *ioc, struct _sas_phy
 938         *mpt3sas_phy, Mpi2ExpanderPage1_t expander_pg1,
 939         struct device *parent_dev)
 940 {
 941         struct sas_phy *phy;
 942         int phy_index = mpt3sas_phy->phy_id;
 943
 944         INIT_LIST_HEAD(&mpt3sas_phy->port_siblings);
 945         phy = sas_phy_alloc(parent_dev, phy_index);
 946         if (!phy) {
 947                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 948                     ioc->name, __FILE__, __LINE__, __func__);
 949                 return -1;
 950         }
 951         if ((_transport_set_identify(ioc, mpt3sas_phy->handle,
 952             &mpt3sas_phy->identify))) {
 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         phy->identify = mpt3sas_phy->identify;
 959         mpt3sas_phy->attached_handle =
 960             le16_to_cpu(expander_pg1.AttachedDevHandle);
 961         if (mpt3sas_phy->attached_handle)
 962                 _transport_set_identify(ioc, mpt3sas_phy->attached_handle,
 963                     &mpt3sas_phy->remote_identify);
 964         phy->identify.phy_identifier = mpt3sas_phy->phy_id;
 965         phy->negotiated_linkrate = _transport_convert_phy_link_rate(
 966             expander_pg1.NegotiatedLinkRate &
 967             MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
 968         phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
 969             expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
 970         phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
 971             expander_pg1.HwLinkRate >> 4);
 972         phy->minimum_linkrate = _transport_convert_phy_link_rate(
 973             expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
 974         phy->maximum_linkrate = _transport_convert_phy_link_rate(
 975             expander_pg1.ProgrammedLinkRate >> 4);
 976
 977         if ((sas_phy_add(phy))) {
 978                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
 979                     ioc->name, __FILE__, __LINE__, __func__);
 980                 sas_phy_free(phy);
 981                 return -1;
 982         }
 983         if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 984                 dev_printk(KERN_INFO, &phy->dev,
 985                     "add: handle(0x%04x), sas_addr(0x%016llx)\n"
 986                     "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
 987                     mpt3sas_phy->handle, (unsigned long long)
 988                     mpt3sas_phy->identify.sas_address,
 989                     mpt3sas_phy->attached_handle,
 990                     (unsigned long long)
 991                     mpt3sas_phy->remote_identify.sas_address);
 992         mpt3sas_phy->phy = phy;
 993         return 0;
 994 }
 995
 996 /**
 997  * mpt3sas_transport_update_links - refreshing phy link changes
 998  * @ioc: per adapter object
 999  * @sas_address: sas address of parent expander or sas host
1000  * @handle: attached device handle
1001  * @phy_numberv: phy number
1002  * @link_rate: new link rate
1003  *
1004  * Returns nothing.
1005  */
1006 void
1007 mpt3sas_transport_update_links(struct MPT3SAS_ADAPTER *ioc,
1008         u64 sas_address, u16 handle, u8 phy_number, u8 link_rate)
1009 {
1010         unsigned long flags;
1011         struct _sas_node *sas_node;
1012         struct _sas_phy *mpt3sas_phy;
1013
1014         if (ioc->shost_recovery || ioc->pci_error_recovery)
1015                 return;
1016
1017         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1018         sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
1019         if (!sas_node) {
1020                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1021                 return;
1022         }
1023
1024         mpt3sas_phy = &sas_node->phy[phy_number];
1025         mpt3sas_phy->attached_handle = handle;
1026         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1027         if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
1028                 _transport_set_identify(ioc, handle,
1029                     &mpt3sas_phy->remote_identify);
1030                 _transport_add_phy_to_an_existing_port(ioc, sas_node,
1031                     mpt3sas_phy, mpt3sas_phy->remote_identify.sas_address);
1032         } else
1033                 memset(&mpt3sas_phy->remote_identify, 0 , sizeof(struct
1034                     sas_identify));
1035
1036         if (mpt3sas_phy->phy)
1037                 mpt3sas_phy->phy->negotiated_linkrate =
1038                     _transport_convert_phy_link_rate(link_rate);
1039
1040         if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
1041                 dev_printk(KERN_INFO, &mpt3sas_phy->phy->dev,
1042                     "refresh: parent sas_addr(0x%016llx),\n"
1043                     "\tlink_rate(0x%02x), phy(%d)\n"
1044                     "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1045                     (unsigned long long)sas_address,
1046                     link_rate, phy_number, handle, (unsigned long long)
1047                     mpt3sas_phy->remote_identify.sas_address);
1048 }
1049
1050 static inline void *
1051 phy_to_ioc(struct sas_phy *phy)
1052 {
1053         struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
1054         return shost_priv(shost);
1055 }
1056
1057 static inline void *
1058 rphy_to_ioc(struct sas_rphy *rphy)
1059 {
1060         struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
1061         return shost_priv(shost);
1062 }
1063
1064 /* report phy error log structure */
1065 struct phy_error_log_request {
1066         u8 smp_frame_type; /* 0x40 */
1067         u8 function; /* 0x11 */
1068         u8 allocated_response_length;
1069         u8 request_length; /* 02 */
1070         u8 reserved_1[5];
1071         u8 phy_identifier;
1072         u8 reserved_2[2];
1073 };
1074
1075 /* report phy error log reply structure */
1076 struct phy_error_log_reply {
1077         u8 smp_frame_type; /* 0x41 */
1078         u8 function; /* 0x11 */
1079         u8 function_result;
1080         u8 response_length;
1081         __be16 expander_change_count;
1082         u8 reserved_1[3];
1083         u8 phy_identifier;
1084         u8 reserved_2[2];
1085         __be32 invalid_dword;
1086         __be32 running_disparity_error;
1087         __be32 loss_of_dword_sync;
1088         __be32 phy_reset_problem;
1089 };
1090
1091 /**
1092  * _transport_get_expander_phy_error_log - return expander counters
1093  * @ioc: per adapter object
1094  * @phy: The sas phy object
1095  *
1096  * Returns 0 for success, non-zero for failure.
1097  *
1098  */
1099 static int
1100 _transport_get_expander_phy_error_log(struct MPT3SAS_ADAPTER *ioc,
1101         struct sas_phy *phy)
1102 {
1103         Mpi2SmpPassthroughRequest_t *mpi_request;
1104         Mpi2SmpPassthroughReply_t *mpi_reply;
1105         struct phy_error_log_request *phy_error_log_request;
1106         struct phy_error_log_reply *phy_error_log_reply;
1107         int rc;
1108         u16 smid;
1109         u32 ioc_state;
1110         unsigned long timeleft;
1111         void *psge;
1112         u8 issue_reset = 0;
1113         void *data_out = NULL;
1114         dma_addr_t data_out_dma;
1115         u32 sz;
1116         u16 wait_state_count;
1117
1118         if (ioc->shost_recovery || ioc->pci_error_recovery) {
1119                 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
1120                     __func__, ioc->name);
1121                 return -EFAULT;
1122         }
1123
1124         mutex_lock(&ioc->transport_cmds.mutex);
1125
1126         if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1127                 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n",
1128                     ioc->name, __func__);
1129                 rc = -EAGAIN;
1130                 goto out;
1131         }
1132         ioc->transport_cmds.status = MPT3_CMD_PENDING;
1133
1134         wait_state_count = 0;
1135         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1136         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1137                 if (wait_state_count++ == 10) {
1138                         pr_err(MPT3SAS_FMT
1139                             "%s: failed due to ioc not operational\n",
1140                             ioc->name, __func__);
1141                         rc = -EFAULT;
1142                         goto out;
1143                 }
1144                 ssleep(1);
1145                 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1146                 pr_info(MPT3SAS_FMT
1147                         "%s: waiting for operational state(count=%d)\n",
1148                         ioc->name, __func__, wait_state_count);
1149         }
1150         if (wait_state_count)
1151                 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
1152                     ioc->name, __func__);
1153
1154         smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1155         if (!smid) {
1156                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
1157                     ioc->name, __func__);
1158                 rc = -EAGAIN;
1159                 goto out;
1160         }
1161
1162         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1163         ioc->transport_cmds.smid = smid;
1164
1165         sz = sizeof(struct phy_error_log_request) +
1166             sizeof(struct phy_error_log_reply);
1167         data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
1168         if (!data_out) {
1169                 pr_err("failure at %s:%d/%s()!\n", __FILE__,
1170                     __LINE__, __func__);
1171                 rc = -ENOMEM;
1172                 mpt3sas_base_free_smid(ioc, smid);
1173                 goto out;
1174         }
1175
1176         rc = -EINVAL;
1177         memset(data_out, 0, sz);
1178         phy_error_log_request = data_out;
1179         phy_error_log_request->smp_frame_type = 0x40;
1180         phy_error_log_request->function = 0x11;
1181         phy_error_log_request->request_length = 2;
1182         phy_error_log_request->allocated_response_length = 0;
1183         phy_error_log_request->phy_identifier = phy->number;
1184
1185         memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1186         mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1187         mpi_request->PhysicalPort = 0xFF;
1188         mpi_request->VF_ID = 0; /* TODO */
1189         mpi_request->VP_ID = 0;
1190         mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1191         mpi_request->RequestDataLength =
1192             cpu_to_le16(sizeof(struct phy_error_log_request));
1193         psge = &mpi_request->SGL;
1194
1195         ioc->build_sg(ioc, psge, data_out_dma,
1196                 sizeof(struct phy_error_log_request),
1197             data_out_dma + sizeof(struct phy_error_log_request),
1198             sizeof(struct phy_error_log_reply));
1199
1200         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1201                 "phy_error_log - send to sas_addr(0x%016llx), phy(%d)\n",
1202                 ioc->name, (unsigned long long)phy->identify.sas_address,
1203                 phy->number));
1204         init_completion(&ioc->transport_cmds.done);
1205         mpt3sas_base_put_smid_default(ioc, smid);
1206         timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1207             10*HZ);
1208
1209         if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1210                 pr_err(MPT3SAS_FMT "%s: timeout\n",
1211                     ioc->name, __func__);
1212                 _debug_dump_mf(mpi_request,
1213                     sizeof(Mpi2SmpPassthroughRequest_t)/4);
1214                 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1215                         issue_reset = 1;
1216                 goto issue_host_reset;
1217         }
1218
1219         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1220                 "phy_error_log - complete\n", ioc->name));
1221
1222         if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1223
1224                 mpi_reply = ioc->transport_cmds.reply;
1225
1226                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1227                     "phy_error_log - reply data transfer size(%d)\n",
1228                     ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
1229
1230                 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1231                     sizeof(struct phy_error_log_reply))
1232                         goto out;
1233
1234                 phy_error_log_reply = data_out +
1235                     sizeof(struct phy_error_log_request);
1236
1237                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1238                     "phy_error_log - function_result(%d)\n",
1239                     ioc->name, phy_error_log_reply->function_result));
1240
1241                 phy->invalid_dword_count =
1242                     be32_to_cpu(phy_error_log_reply->invalid_dword);
1243                 phy->running_disparity_error_count =
1244                     be32_to_cpu(phy_error_log_reply->running_disparity_error);
1245                 phy->loss_of_dword_sync_count =
1246                     be32_to_cpu(phy_error_log_reply->loss_of_dword_sync);
1247                 phy->phy_reset_problem_count =
1248                     be32_to_cpu(phy_error_log_reply->phy_reset_problem);
1249                 rc = 0;
1250         } else
1251                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1252                     "phy_error_log - no reply\n", ioc->name));
1253
1254  issue_host_reset:
1255         if (issue_reset)
1256                 mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1257                     FORCE_BIG_HAMMER);
1258  out:
1259         ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1260         if (data_out)
1261                 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
1262
1263         mutex_unlock(&ioc->transport_cmds.mutex);
1264         return rc;
1265 }
1266
1267 /**
1268  * _transport_get_linkerrors - return phy counters for both hba and expanders
1269  * @phy: The sas phy object
1270  *
1271  * Returns 0 for success, non-zero for failure.
1272  *
1273  */
1274 static int
1275 _transport_get_linkerrors(struct sas_phy *phy)
1276 {
1277         struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1278         unsigned long flags;
1279         Mpi2ConfigReply_t mpi_reply;
1280         Mpi2SasPhyPage1_t phy_pg1;
1281
1282         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1283         if (_transport_sas_node_find_by_sas_address(ioc,
1284             phy->identify.sas_address) == NULL) {
1285                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1286                 return -EINVAL;
1287         }
1288         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1289
1290         if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1291                 return _transport_get_expander_phy_error_log(ioc, phy);
1292
1293         /* get hba phy error logs */
1294         if ((mpt3sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
1295                     phy->number))) {
1296                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1297                     ioc->name, __FILE__, __LINE__, __func__);
1298                 return -ENXIO;
1299         }
1300
1301         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1302                 pr_info(MPT3SAS_FMT
1303                         "phy(%d), ioc_status (0x%04x), loginfo(0x%08x)\n",
1304                         ioc->name, phy->number,
1305                         le16_to_cpu(mpi_reply.IOCStatus),
1306                     le32_to_cpu(mpi_reply.IOCLogInfo));
1307
1308         phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
1309         phy->running_disparity_error_count =
1310             le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
1311         phy->loss_of_dword_sync_count =
1312             le32_to_cpu(phy_pg1.LossDwordSynchCount);
1313         phy->phy_reset_problem_count =
1314             le32_to_cpu(phy_pg1.PhyResetProblemCount);
1315         return 0;
1316 }
1317
1318 /**
1319  * _transport_get_enclosure_identifier -
1320  * @phy: The sas phy object
1321  *
1322  * Obtain the enclosure logical id for an expander.
1323  * Returns 0 for success, non-zero for failure.
1324  */
1325 static int
1326 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
1327 {
1328         struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1329         struct _sas_device *sas_device;
1330         unsigned long flags;
1331         int rc;
1332
1333         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1334         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1335             rphy->identify.sas_address);
1336         if (sas_device) {
1337                 *identifier = sas_device->enclosure_logical_id;
1338                 rc = 0;
1339                 sas_device_put(sas_device);
1340         } else {
1341                 *identifier = 0;
1342                 rc = -ENXIO;
1343         }
1344
1345         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1346         return rc;
1347 }
1348
1349 /**
1350  * _transport_get_bay_identifier -
1351  * @phy: The sas phy object
1352  *
1353  * Returns the slot id for a device that resides inside an enclosure.
1354  */
1355 static int
1356 _transport_get_bay_identifier(struct sas_rphy *rphy)
1357 {
1358         struct MPT3SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1359         struct _sas_device *sas_device;
1360         unsigned long flags;
1361         int rc;
1362
1363         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1364         sas_device = __mpt3sas_get_sdev_by_addr(ioc,
1365             rphy->identify.sas_address);
1366         if (sas_device) {
1367                 rc = sas_device->slot;
1368                 sas_device_put(sas_device);
1369         } else {
1370                 rc = -ENXIO;
1371         }
1372         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1373         return rc;
1374 }
1375
1376 /* phy control request structure */
1377 struct phy_control_request {
1378         u8 smp_frame_type; /* 0x40 */
1379         u8 function; /* 0x91 */
1380         u8 allocated_response_length;
1381         u8 request_length; /* 0x09 */
1382         u16 expander_change_count;
1383         u8 reserved_1[3];
1384         u8 phy_identifier;
1385         u8 phy_operation;
1386         u8 reserved_2[13];
1387         u64 attached_device_name;
1388         u8 programmed_min_physical_link_rate;
1389         u8 programmed_max_physical_link_rate;
1390         u8 reserved_3[6];
1391 };
1392
1393 /* phy control reply structure */
1394 struct phy_control_reply {
1395         u8 smp_frame_type; /* 0x41 */
1396         u8 function; /* 0x11 */
1397         u8 function_result;
1398         u8 response_length;
1399 };
1400
1401 #define SMP_PHY_CONTROL_LINK_RESET      (0x01)
1402 #define SMP_PHY_CONTROL_HARD_RESET      (0x02)
1403 #define SMP_PHY_CONTROL_DISABLE         (0x03)
1404
1405 /**
1406  * _transport_expander_phy_control - expander phy control
1407  * @ioc: per adapter object
1408  * @phy: The sas phy object
1409  *
1410  * Returns 0 for success, non-zero for failure.
1411  *
1412  */
1413 static int
1414 _transport_expander_phy_control(struct MPT3SAS_ADAPTER *ioc,
1415         struct sas_phy *phy, u8 phy_operation)
1416 {
1417         Mpi2SmpPassthroughRequest_t *mpi_request;
1418         Mpi2SmpPassthroughReply_t *mpi_reply;
1419         struct phy_control_request *phy_control_request;
1420         struct phy_control_reply *phy_control_reply;
1421         int rc;
1422         u16 smid;
1423         u32 ioc_state;
1424         unsigned long timeleft;
1425         void *psge;
1426         u8 issue_reset = 0;
1427         void *data_out = NULL;
1428         dma_addr_t data_out_dma;
1429         u32 sz;
1430         u16 wait_state_count;
1431
1432         if (ioc->shost_recovery || ioc->pci_error_recovery) {
1433                 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
1434                     __func__, ioc->name);
1435                 return -EFAULT;
1436         }
1437
1438         mutex_lock(&ioc->transport_cmds.mutex);
1439
1440         if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1441                 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n",
1442                     ioc->name, __func__);
1443                 rc = -EAGAIN;
1444                 goto out;
1445         }
1446         ioc->transport_cmds.status = MPT3_CMD_PENDING;
1447
1448         wait_state_count = 0;
1449         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1450         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1451                 if (wait_state_count++ == 10) {
1452                         pr_err(MPT3SAS_FMT
1453                             "%s: failed due to ioc not operational\n",
1454                             ioc->name, __func__);
1455                         rc = -EFAULT;
1456                         goto out;
1457                 }
1458                 ssleep(1);
1459                 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1460                 pr_info(MPT3SAS_FMT
1461                         "%s: waiting for operational state(count=%d)\n",
1462                         ioc->name, __func__, wait_state_count);
1463         }
1464         if (wait_state_count)
1465                 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
1466                     ioc->name, __func__);
1467
1468         smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
1469         if (!smid) {
1470                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
1471                     ioc->name, __func__);
1472                 rc = -EAGAIN;
1473                 goto out;
1474         }
1475
1476         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
1477         ioc->transport_cmds.smid = smid;
1478
1479         sz = sizeof(struct phy_control_request) +
1480             sizeof(struct phy_control_reply);
1481         data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
1482         if (!data_out) {
1483                 pr_err("failure at %s:%d/%s()!\n", __FILE__,
1484                     __LINE__, __func__);
1485                 rc = -ENOMEM;
1486                 mpt3sas_base_free_smid(ioc, smid);
1487                 goto out;
1488         }
1489
1490         rc = -EINVAL;
1491         memset(data_out, 0, sz);
1492         phy_control_request = data_out;
1493         phy_control_request->smp_frame_type = 0x40;
1494         phy_control_request->function = 0x91;
1495         phy_control_request->request_length = 9;
1496         phy_control_request->allocated_response_length = 0;
1497         phy_control_request->phy_identifier = phy->number;
1498         phy_control_request->phy_operation = phy_operation;
1499         phy_control_request->programmed_min_physical_link_rate =
1500             phy->minimum_linkrate << 4;
1501         phy_control_request->programmed_max_physical_link_rate =
1502             phy->maximum_linkrate << 4;
1503
1504         memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1505         mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1506         mpi_request->PhysicalPort = 0xFF;
1507         mpi_request->VF_ID = 0; /* TODO */
1508         mpi_request->VP_ID = 0;
1509         mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1510         mpi_request->RequestDataLength =
1511             cpu_to_le16(sizeof(struct phy_error_log_request));
1512         psge = &mpi_request->SGL;
1513
1514         ioc->build_sg(ioc, psge, data_out_dma,
1515                             sizeof(struct phy_control_request),
1516             data_out_dma + sizeof(struct phy_control_request),
1517             sizeof(struct phy_control_reply));
1518
1519         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1520                 "phy_control - send to sas_addr(0x%016llx), phy(%d), opcode(%d)\n",
1521                 ioc->name, (unsigned long long)phy->identify.sas_address,
1522                 phy->number, phy_operation));
1523         init_completion(&ioc->transport_cmds.done);
1524         mpt3sas_base_put_smid_default(ioc, smid);
1525         timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1526             10*HZ);
1527
1528         if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
1529                 pr_err(MPT3SAS_FMT "%s: timeout\n",
1530                     ioc->name, __func__);
1531                 _debug_dump_mf(mpi_request,
1532                     sizeof(Mpi2SmpPassthroughRequest_t)/4);
1533                 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
1534                         issue_reset = 1;
1535                 goto issue_host_reset;
1536         }
1537
1538         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1539                 "phy_control - complete\n", ioc->name));
1540
1541         if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
1542
1543                 mpi_reply = ioc->transport_cmds.reply;
1544
1545                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1546                     "phy_control - reply data transfer size(%d)\n",
1547                     ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
1548
1549                 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
1550                     sizeof(struct phy_control_reply))
1551                         goto out;
1552
1553                 phy_control_reply = data_out +
1554                     sizeof(struct phy_control_request);
1555
1556                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1557                     "phy_control - function_result(%d)\n",
1558                     ioc->name, phy_control_reply->function_result));
1559
1560                 rc = 0;
1561         } else
1562                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
1563                     "phy_control - no reply\n", ioc->name));
1564
1565  issue_host_reset:
1566         if (issue_reset)
1567                 mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1568                     FORCE_BIG_HAMMER);
1569  out:
1570         ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
1571         if (data_out)
1572                 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
1573
1574         mutex_unlock(&ioc->transport_cmds.mutex);
1575         return rc;
1576 }
1577
1578 /**
1579  * _transport_phy_reset -
1580  * @phy: The sas phy object
1581  * @hard_reset:
1582  *
1583  * Returns 0 for success, non-zero for failure.
1584  */
1585 static int
1586 _transport_phy_reset(struct sas_phy *phy, int hard_reset)
1587 {
1588         struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1589         Mpi2SasIoUnitControlReply_t mpi_reply;
1590         Mpi2SasIoUnitControlRequest_t mpi_request;
1591         unsigned long flags;
1592
1593         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1594         if (_transport_sas_node_find_by_sas_address(ioc,
1595             phy->identify.sas_address) == NULL) {
1596                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1597                 return -EINVAL;
1598         }
1599         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1600
1601         /* handle expander phys */
1602         if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1603                 return _transport_expander_phy_control(ioc, phy,
1604                     (hard_reset == 1) ? SMP_PHY_CONTROL_HARD_RESET :
1605                     SMP_PHY_CONTROL_LINK_RESET);
1606
1607         /* handle hba phys */
1608         memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
1609         mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
1610         mpi_request.Operation = hard_reset ?
1611             MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1612         mpi_request.PhyNum = phy->number;
1613
1614         if ((mpt3sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
1615                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1616                     ioc->name, __FILE__, __LINE__, __func__);
1617                 return -ENXIO;
1618         }
1619
1620         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1621                 pr_info(MPT3SAS_FMT
1622                 "phy(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
1623                 ioc->name, phy->number, le16_to_cpu(mpi_reply.IOCStatus),
1624                     le32_to_cpu(mpi_reply.IOCLogInfo));
1625
1626         return 0;
1627 }
1628
1629 /**
1630  * _transport_phy_enable - enable/disable phys
1631  * @phy: The sas phy object
1632  * @enable: enable phy when true
1633  *
1634  * Only support sas_host direct attached phys.
1635  * Returns 0 for success, non-zero for failure.
1636  */
1637 static int
1638 _transport_phy_enable(struct sas_phy *phy, int enable)
1639 {
1640         struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1641         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1642         Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
1643         Mpi2ConfigReply_t mpi_reply;
1644         u16 ioc_status;
1645         u16 sz;
1646         int rc = 0;
1647         unsigned long flags;
1648         int i, discovery_active;
1649
1650         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1651         if (_transport_sas_node_find_by_sas_address(ioc,
1652             phy->identify.sas_address) == NULL) {
1653                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1654                 return -EINVAL;
1655         }
1656         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1657
1658         /* handle expander phys */
1659         if (phy->identify.sas_address != ioc->sas_hba.sas_address)
1660                 return _transport_expander_phy_control(ioc, phy,
1661                     (enable == 1) ? SMP_PHY_CONTROL_LINK_RESET :
1662                     SMP_PHY_CONTROL_DISABLE);
1663
1664         /* handle hba phys */
1665
1666         /* read sas_iounit page 0 */
1667         sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
1668             sizeof(Mpi2SasIOUnit0PhyData_t));
1669         sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
1670         if (!sas_iounit_pg0) {
1671                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1672                     ioc->name, __FILE__, __LINE__, __func__);
1673                 rc = -ENOMEM;
1674                 goto out;
1675         }
1676         if ((mpt3sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
1677             sas_iounit_pg0, sz))) {
1678                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1679                     ioc->name, __FILE__, __LINE__, __func__);
1680                 rc = -ENXIO;
1681                 goto out;
1682         }
1683         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1684             MPI2_IOCSTATUS_MASK;
1685         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1686                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1687                     ioc->name, __FILE__, __LINE__, __func__);
1688                 rc = -EIO;
1689                 goto out;
1690         }
1691
1692         /* unable to enable/disable phys when when discovery is active */
1693         for (i = 0, discovery_active = 0; i < ioc->sas_hba.num_phys ; i++) {
1694                 if (sas_iounit_pg0->PhyData[i].PortFlags &
1695                     MPI2_SASIOUNIT0_PORTFLAGS_DISCOVERY_IN_PROGRESS) {
1696                         pr_err(MPT3SAS_FMT "discovery is active on " \
1697                             "port = %d, phy = %d: unable to enable/disable "
1698                             "phys, try again later!\n", ioc->name,
1699                             sas_iounit_pg0->PhyData[i].Port, i);
1700                         discovery_active = 1;
1701                 }
1702         }
1703
1704         if (discovery_active) {
1705                 rc = -EAGAIN;
1706                 goto out;
1707         }
1708
1709         /* read sas_iounit page 1 */
1710         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1711             sizeof(Mpi2SasIOUnit1PhyData_t));
1712         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1713         if (!sas_iounit_pg1) {
1714                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1715                     ioc->name, __FILE__, __LINE__, __func__);
1716                 rc = -ENOMEM;
1717                 goto out;
1718         }
1719         if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1720             sas_iounit_pg1, sz))) {
1721                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1722                     ioc->name, __FILE__, __LINE__, __func__);
1723                 rc = -ENXIO;
1724                 goto out;
1725         }
1726         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1727             MPI2_IOCSTATUS_MASK;
1728         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1729                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1730                     ioc->name, __FILE__, __LINE__, __func__);
1731                 rc = -EIO;
1732                 goto out;
1733         }
1734
1735         /* copy Port/PortFlags/PhyFlags from page 0 */
1736         for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
1737                 sas_iounit_pg1->PhyData[i].Port =
1738                     sas_iounit_pg0->PhyData[i].Port;
1739                 sas_iounit_pg1->PhyData[i].PortFlags =
1740                     (sas_iounit_pg0->PhyData[i].PortFlags &
1741                     MPI2_SASIOUNIT0_PORTFLAGS_AUTO_PORT_CONFIG);
1742                 sas_iounit_pg1->PhyData[i].PhyFlags =
1743                     (sas_iounit_pg0->PhyData[i].PhyFlags &
1744                     (MPI2_SASIOUNIT0_PHYFLAGS_ZONING_ENABLED +
1745                     MPI2_SASIOUNIT0_PHYFLAGS_PHY_DISABLED));
1746         }
1747
1748         if (enable)
1749                 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1750                     &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1751         else
1752                 sas_iounit_pg1->PhyData[phy->number].PhyFlags
1753                     |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1754
1755         mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
1756
1757         /* link reset */
1758         if (enable)
1759                 _transport_phy_reset(phy, 0);
1760
1761  out:
1762         kfree(sas_iounit_pg1);
1763         kfree(sas_iounit_pg0);
1764         return rc;
1765 }
1766
1767 /**
1768  * _transport_phy_speed - set phy min/max link rates
1769  * @phy: The sas phy object
1770  * @rates: rates defined in sas_phy_linkrates
1771  *
1772  * Only support sas_host direct attached phys.
1773  * Returns 0 for success, non-zero for failure.
1774  */
1775 static int
1776 _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
1777 {
1778         struct MPT3SAS_ADAPTER *ioc = phy_to_ioc(phy);
1779         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1780         Mpi2SasPhyPage0_t phy_pg0;
1781         Mpi2ConfigReply_t mpi_reply;
1782         u16 ioc_status;
1783         u16 sz;
1784         int i;
1785         int rc = 0;
1786         unsigned long flags;
1787
1788         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1789         if (_transport_sas_node_find_by_sas_address(ioc,
1790             phy->identify.sas_address) == NULL) {
1791                 spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1792                 return -EINVAL;
1793         }
1794         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1795
1796         if (!rates->minimum_linkrate)
1797                 rates->minimum_linkrate = phy->minimum_linkrate;
1798         else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
1799                 rates->minimum_linkrate = phy->minimum_linkrate_hw;
1800
1801         if (!rates->maximum_linkrate)
1802                 rates->maximum_linkrate = phy->maximum_linkrate;
1803         else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
1804                 rates->maximum_linkrate = phy->maximum_linkrate_hw;
1805
1806         /* handle expander phys */
1807         if (phy->identify.sas_address != ioc->sas_hba.sas_address) {
1808                 phy->minimum_linkrate = rates->minimum_linkrate;
1809                 phy->maximum_linkrate = rates->maximum_linkrate;
1810                 return _transport_expander_phy_control(ioc, phy,
1811                     SMP_PHY_CONTROL_LINK_RESET);
1812         }
1813
1814         /* handle hba phys */
1815
1816         /* sas_iounit page 1 */
1817         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1818             sizeof(Mpi2SasIOUnit1PhyData_t));
1819         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1820         if (!sas_iounit_pg1) {
1821                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1822                     ioc->name, __FILE__, __LINE__, __func__);
1823                 rc = -ENOMEM;
1824                 goto out;
1825         }
1826         if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1827             sas_iounit_pg1, sz))) {
1828                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1829                     ioc->name, __FILE__, __LINE__, __func__);
1830                 rc = -ENXIO;
1831                 goto out;
1832         }
1833         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1834             MPI2_IOCSTATUS_MASK;
1835         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1836                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1837                     ioc->name, __FILE__, __LINE__, __func__);
1838                 rc = -EIO;
1839                 goto out;
1840         }
1841
1842         for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1843                 if (phy->number != i) {
1844                         sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1845                             (ioc->sas_hba.phy[i].phy->minimum_linkrate +
1846                             (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
1847                 } else {
1848                         sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1849                             (rates->minimum_linkrate +
1850                             (rates->maximum_linkrate << 4));
1851                 }
1852         }
1853
1854         if (mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
1855             sz)) {
1856                 pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
1857                     ioc->name, __FILE__, __LINE__, __func__);
1858                 rc = -ENXIO;
1859                 goto out;
1860         }
1861
1862         /* link reset */
1863         _transport_phy_reset(phy, 0);
1864
1865         /* read phy page 0, then update the rates in the sas transport phy */
1866         if (!mpt3sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1867             phy->number)) {
1868                 phy->minimum_linkrate = _transport_convert_phy_link_rate(
1869                     phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1870                 phy->maximum_linkrate = _transport_convert_phy_link_rate(
1871                     phy_pg0.ProgrammedLinkRate >> 4);
1872                 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1873                     phy_pg0.NegotiatedLinkRate &
1874                     MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1875         }
1876
1877  out:
1878         kfree(sas_iounit_pg1);
1879         return rc;
1880 }
1881
1882 /**
1883  * _transport_smp_handler - transport portal for smp passthru
1884  * @shost: shost object
1885  * @rphy: sas transport rphy object
1886  * @req:
1887  *
1888  * This used primarily for smp_utils.
1889  * Example:
1890  *           smp_rep_general /sys/class/bsg/expander-5:0
1891  */
1892 static int
1893 _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
1894         struct request *req)
1895 {
1896         struct MPT3SAS_ADAPTER *ioc = shost_priv(shost);
1897         Mpi2SmpPassthroughRequest_t *mpi_request;
1898         Mpi2SmpPassthroughReply_t *mpi_reply;
1899         int rc;
1900         u16 smid;
1901         u32 ioc_state;
1902         unsigned long timeleft;
1903         void *psge;
1904         u8 issue_reset = 0;
1905         dma_addr_t dma_addr_in = 0;
1906         dma_addr_t dma_addr_out = 0;
1907         dma_addr_t pci_dma_in = 0;
1908         dma_addr_t pci_dma_out = 0;
1909         void *pci_addr_in = NULL;
1910         void *pci_addr_out = NULL;
1911         u16 wait_state_count;
1912         struct request *rsp = req->next_rq;
1913         struct bio_vec bvec;
1914         struct bvec_iter iter;
1915
1916         if (!rsp) {
1917                 pr_err(MPT3SAS_FMT "%s: the smp response space is missing\n",
1918                         ioc->name, __func__);
1919                 return -EINVAL;
1920         }
1921
1922         if (ioc->shost_recovery || ioc->pci_error_recovery) {
1923                 pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
1924                     __func__, ioc->name);
1925                 return -EFAULT;
1926         }
1927
1928         rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
1929         if (rc)
1930                 return rc;
1931
1932         if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
1933                 pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n", ioc->name,
1934                     __func__);
1935                 rc = -EAGAIN;
1936                 goto out;
1937         }
1938         ioc->transport_cmds.status = MPT3_CMD_PENDING;
1939
1940         /* Check if the request is split across multiple segments */
1941         if (bio_multiple_segments(req->bio)) {
1942                 u32 offset = 0;
1943
1944                 /* Allocate memory and copy the request */
1945                 pci_addr_out = pci_alloc_consistent(ioc->pdev,
1946                     blk_rq_bytes(req), &pci_dma_out);
1947                 if (!pci_addr_out) {
1948                         pr_info(MPT3SAS_FMT "%s(): PCI Addr out = NULL\n",
1949                             ioc->name, __func__);
1950                         rc = -ENOMEM;
1951                         goto out;
1952                 }
1953
1954                 bio_for_each_segment(bvec, req->bio, iter) {
1955                         memcpy(pci_addr_out + offset,
1956                             page_address(bvec.bv_page) + bvec.bv_offset,
1957                             bvec.bv_len);
1958                         offset += bvec.bv_len;
1959                 }
1960         } else {
1961                 dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
1962                     blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
1963                 if (pci_dma_mapping_error(ioc->pdev, dma_addr_out)) {
1964                         pr_info(MPT3SAS_FMT "%s(): DMA Addr out = NULL\n",
1965                             ioc->name, __func__);
1966                         rc = -ENOMEM;
1967                         goto free_pci;
1968                 }
1969         }
1970
1971         /* Check if the response needs to be populated across
1972          * multiple segments */
1973         if (bio_multiple_segments(rsp->bio)) {
1974                 pci_addr_in = pci_alloc_consistent(ioc->pdev, blk_rq_bytes(rsp),
1975                     &pci_dma_in);
1976                 if (!pci_addr_in) {
1977                         pr_info(MPT3SAS_FMT "%s(): PCI Addr in = NULL\n",
1978                             ioc->name, __func__);
1979                         rc = -ENOMEM;
1980                         goto unmap;
1981                 }
1982         } else {
1983                 dma_addr_in =  pci_map_single(ioc->pdev, bio_data(rsp->bio),
1984                     blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
1985                 if (pci_dma_mapping_error(ioc->pdev, dma_addr_in)) {
1986                         pr_info(MPT3SAS_FMT "%s(): DMA Addr in = NULL\n",
1987                             ioc->name, __func__);
1988                         rc = -ENOMEM;
1989                         goto unmap;
1990                 }
1991         }
1992
1993         wait_state_count = 0;
1994         ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
1995         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1996                 if (wait_state_count++ == 10) {
1997                         pr_err(MPT3SAS_FMT
1998                             "%s: failed due to ioc not operational\n",
1999                             ioc->name, __func__);
2000                         rc = -EFAULT;
2001                         goto unmap;
2002                 }
2003                 ssleep(1);
2004                 ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
2005                 pr_info(MPT3SAS_FMT
2006                         "%s: waiting for operational state(count=%d)\n",
2007                         ioc->name, __func__, wait_state_count);
2008         }
2009         if (wait_state_count)
2010                 pr_info(MPT3SAS_FMT "%s: ioc is operational\n",
2011                     ioc->name, __func__);
2012
2013         smid = mpt3sas_base_get_smid(ioc, ioc->transport_cb_idx);
2014         if (!smid) {
2015                 pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
2016                     ioc->name, __func__);
2017                 rc = -EAGAIN;
2018                 goto unmap;
2019         }
2020
2021         rc = 0;
2022         mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
2023         ioc->transport_cmds.smid = smid;
2024
2025         memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
2026         mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
2027         mpi_request->PhysicalPort = 0xFF;
2028         mpi_request->SASAddress = (rphy) ?
2029             cpu_to_le64(rphy->identify.sas_address) :
2030             cpu_to_le64(ioc->sas_hba.sas_address);
2031         mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4);
2032         psge = &mpi_request->SGL;
2033
2034         if (bio_multiple_segments(req->bio))
2035                 ioc->build_sg(ioc, psge, pci_dma_out, (blk_rq_bytes(req) - 4),
2036                     pci_dma_in, (blk_rq_bytes(rsp) + 4));
2037         else
2038                 ioc->build_sg(ioc, psge, dma_addr_out, (blk_rq_bytes(req) - 4),
2039                     dma_addr_in, (blk_rq_bytes(rsp) + 4));
2040
2041         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2042                 "%s - sending smp request\n", ioc->name, __func__));
2043
2044         init_completion(&ioc->transport_cmds.done);
2045         mpt3sas_base_put_smid_default(ioc, smid);
2046         timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
2047             10*HZ);
2048
2049         if (!(ioc->transport_cmds.status & MPT3_CMD_COMPLETE)) {
2050                 pr_err(MPT3SAS_FMT "%s : timeout\n",
2051                     __func__, ioc->name);
2052                 _debug_dump_mf(mpi_request,
2053                     sizeof(Mpi2SmpPassthroughRequest_t)/4);
2054                 if (!(ioc->transport_cmds.status & MPT3_CMD_RESET))
2055                         issue_reset = 1;
2056                 goto issue_host_reset;
2057         }
2058
2059         dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2060                 "%s - complete\n", ioc->name, __func__));
2061
2062         if (ioc->transport_cmds.status & MPT3_CMD_REPLY_VALID) {
2063
2064                 mpi_reply = ioc->transport_cmds.reply;
2065
2066                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2067                     "%s - reply data transfer size(%d)\n",
2068                     ioc->name, __func__,
2069                     le16_to_cpu(mpi_reply->ResponseDataLength)));
2070
2071                 memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
2072                 req->sense_len = sizeof(*mpi_reply);
2073                 req->resid_len = 0;
2074                 rsp->resid_len -=
2075                     le16_to_cpu(mpi_reply->ResponseDataLength);
2076
2077                 /* check if the resp needs to be copied from the allocated
2078                  * pci mem */
2079                 if (bio_multiple_segments(rsp->bio)) {
2080                         u32 offset = 0;
2081                         u32 bytes_to_copy =
2082                             le16_to_cpu(mpi_reply->ResponseDataLength);
2083                         bio_for_each_segment(bvec, rsp->bio, iter) {
2084                                 if (bytes_to_copy <= bvec.bv_len) {
2085                                         memcpy(page_address(bvec.bv_page) +
2086                                             bvec.bv_offset, pci_addr_in +
2087                                             offset, bytes_to_copy);
2088                                         break;
2089                                 } else {
2090                                         memcpy(page_address(bvec.bv_page) +
2091                                             bvec.bv_offset, pci_addr_in +
2092                                             offset, bvec.bv_len);
2093                                         bytes_to_copy -= bvec.bv_len;
2094                                 }
2095                                 offset += bvec.bv_len;
2096                         }
2097                 }
2098         } else {
2099                 dtransportprintk(ioc, pr_info(MPT3SAS_FMT
2100                     "%s - no reply\n", ioc->name, __func__));
2101                 rc = -ENXIO;
2102         }
2103
2104  issue_host_reset:
2105         if (issue_reset) {
2106                 mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
2107                     FORCE_BIG_HAMMER);
2108                 rc = -ETIMEDOUT;
2109         }
2110
2111  unmap:
2112         if (dma_addr_out)
2113                 pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req),
2114                     PCI_DMA_BIDIRECTIONAL);
2115         if (dma_addr_in)
2116                 pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp),
2117                     PCI_DMA_BIDIRECTIONAL);
2118
2119  free_pci:
2120         if (pci_addr_out)
2121                 pci_free_consistent(ioc->pdev, blk_rq_bytes(req), pci_addr_out,
2122                     pci_dma_out);
2123
2124         if (pci_addr_in)
2125                 pci_free_consistent(ioc->pdev, blk_rq_bytes(rsp), pci_addr_in,
2126                     pci_dma_in);
2127
2128  out:
2129         ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
2130         mutex_unlock(&ioc->transport_cmds.mutex);
2131         return rc;
2132 }
2133
2134 struct sas_function_template mpt3sas_transport_functions = {
2135         .get_linkerrors         = _transport_get_linkerrors,
2136         .get_enclosure_identifier = _transport_get_enclosure_identifier,
2137         .get_bay_identifier     = _transport_get_bay_identifier,
2138         .phy_reset              = _transport_phy_reset,
2139         .phy_enable             = _transport_phy_enable,
2140         .set_phy_speed          = _transport_phy_speed,
2141         .smp_handler            = _transport_smp_handler,
2142 };
2143
2144 struct scsi_transport_template *mpt3sas_transport_template;