drivers/scsi/mpt2sas/mpt2sas_transport.c

   1 /*
   2  * SAS Transport Layer for MPT (Message Passing Technology) based controllers
   3  *
   4  * This code is based on drivers/scsi/mpt2sas/mpt2_transport.c
   5  * Copyright (C) 2007-2010  LSI Corporation
   6  *  (mailto:DL-MPTFusionLinux@lsi.com)
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * as published by the Free Software Foundation; either version 2
  11  * of the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * NO WARRANTY
  19  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  20  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  21  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  22  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  23  * solely responsible for determining the appropriateness of using and
  24  * distributing the Program and assumes all risks associated with its
  25  * exercise of rights under this Agreement, including but not limited to
  26  * the risks and costs of program errors, damage to or loss of data,
  27  * programs or equipment, and unavailability or interruption of operations.
  28
  29  * DISCLAIMER OF LIABILITY
  30  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  31  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  33  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  34  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  35  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  36  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  37
  38  * You should have received a copy of the GNU General Public License
  39  * along with this program; if not, write to the Free Software
  40  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  41  * USA.
  42  */
  43
  44 #include <linux/module.h>
  45 #include <linux/kernel.h>
  46 #include <linux/init.h>
  47 #include <linux/errno.h>
  48 #include <linux/sched.h>
  49 #include <linux/workqueue.h>
  50 #include <linux/delay.h>
  51 #include <linux/pci.h>
  52 #include <linux/slab.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 "mpt2sas_base.h"
  62 /**
  63  * _transport_sas_node_find_by_sas_address - sas node search
  64  * @ioc: per adapter object
  65  * @sas_address: sas address of expander or sas host
  66  * Context: Calling function should acquire ioc->sas_node_lock.
  67  *
  68  * Search for either hba phys or expander device based on handle, then returns
  69  * the sas_node object.
  70  */
  71 static struct _sas_node *
  72 _transport_sas_node_find_by_sas_address(struct MPT2SAS_ADAPTER *ioc,
  73     u64 sas_address)
  74 {
  75         if (ioc->sas_hba.sas_address == sas_address)
  76                 return &ioc->sas_hba;
  77         else
  78                 return mpt2sas_scsih_expander_find_by_sas_address(ioc,
  79                     sas_address);
  80 }
  81
  82 /**
  83  * _transport_convert_phy_link_rate -
  84  * @link_rate: link rate returned from mpt firmware
  85  *
  86  * Convert link_rate from mpi fusion into sas_transport form.
  87  */
  88 static enum sas_linkrate
  89 _transport_convert_phy_link_rate(u8 link_rate)
  90 {
  91         enum sas_linkrate rc;
  92
  93         switch (link_rate) {
  94         case MPI2_SAS_NEG_LINK_RATE_1_5:
  95                 rc = SAS_LINK_RATE_1_5_GBPS;
  96                 break;
  97         case MPI2_SAS_NEG_LINK_RATE_3_0:
  98                 rc = SAS_LINK_RATE_3_0_GBPS;
  99                 break;
 100         case MPI2_SAS_NEG_LINK_RATE_6_0:
 101                 rc = SAS_LINK_RATE_6_0_GBPS;
 102                 break;
 103         case MPI2_SAS_NEG_LINK_RATE_PHY_DISABLED:
 104                 rc = SAS_PHY_DISABLED;
 105                 break;
 106         case MPI2_SAS_NEG_LINK_RATE_NEGOTIATION_FAILED:
 107                 rc = SAS_LINK_RATE_FAILED;
 108                 break;
 109         case MPI2_SAS_NEG_LINK_RATE_PORT_SELECTOR:
 110                 rc = SAS_SATA_PORT_SELECTOR;
 111                 break;
 112         case MPI2_SAS_NEG_LINK_RATE_SMP_RESET_IN_PROGRESS:
 113                 rc = SAS_PHY_RESET_IN_PROGRESS;
 114                 break;
 115         default:
 116         case MPI2_SAS_NEG_LINK_RATE_SATA_OOB_COMPLETE:
 117         case MPI2_SAS_NEG_LINK_RATE_UNKNOWN_LINK_RATE:
 118                 rc = SAS_LINK_RATE_UNKNOWN;
 119                 break;
 120         }
 121         return rc;
 122 }
 123
 124 /**
 125  * _transport_set_identify - set identify for phys and end devices
 126  * @ioc: per adapter object
 127  * @handle: device handle
 128  * @identify: sas identify info
 129  *
 130  * Populates sas identify info.
 131  *
 132  * Returns 0 for success, non-zero for failure.
 133  */
 134 static int
 135 _transport_set_identify(struct MPT2SAS_ADAPTER *ioc, u16 handle,
 136     struct sas_identify *identify)
 137 {
 138         Mpi2SasDevicePage0_t sas_device_pg0;
 139         Mpi2ConfigReply_t mpi_reply;
 140         u32 device_info;
 141         u32 ioc_status;
 142
 143         if (ioc->shost_recovery) {
 144                 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
 145                     __func__, ioc->name);
 146                 return -EFAULT;
 147         }
 148
 149         if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
 150             MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
 151                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 152
 153                     ioc->name, __FILE__, __LINE__, __func__);
 154                 return -ENXIO;
 155         }
 156
 157         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
 158             MPI2_IOCSTATUS_MASK;
 159         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
 160                 printk(MPT2SAS_ERR_FMT "handle(0x%04x), ioc_status(0x%04x)"
 161                     "\nfailure at %s:%d/%s()!\n", ioc->name, handle, ioc_status,
 162                      __FILE__, __LINE__, __func__);
 163                 return -EIO;
 164         }
 165
 166         memset(identify, 0, sizeof(identify));
 167         device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
 168
 169         /* sas_address */
 170         identify->sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
 171
 172         /* device_type */
 173         switch (device_info & MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) {
 174         case MPI2_SAS_DEVICE_INFO_NO_DEVICE:
 175                 identify->device_type = SAS_PHY_UNUSED;
 176                 break;
 177         case MPI2_SAS_DEVICE_INFO_END_DEVICE:
 178                 identify->device_type = SAS_END_DEVICE;
 179                 break;
 180         case MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER:
 181                 identify->device_type = SAS_EDGE_EXPANDER_DEVICE;
 182                 break;
 183         case MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER:
 184                 identify->device_type = SAS_FANOUT_EXPANDER_DEVICE;
 185                 break;
 186         }
 187
 188         /* initiator_port_protocols */
 189         if (device_info & MPI2_SAS_DEVICE_INFO_SSP_INITIATOR)
 190                 identify->initiator_port_protocols |= SAS_PROTOCOL_SSP;
 191         if (device_info & MPI2_SAS_DEVICE_INFO_STP_INITIATOR)
 192                 identify->initiator_port_protocols |= SAS_PROTOCOL_STP;
 193         if (device_info & MPI2_SAS_DEVICE_INFO_SMP_INITIATOR)
 194                 identify->initiator_port_protocols |= SAS_PROTOCOL_SMP;
 195         if (device_info & MPI2_SAS_DEVICE_INFO_SATA_HOST)
 196                 identify->initiator_port_protocols |= SAS_PROTOCOL_SATA;
 197
 198         /* target_port_protocols */
 199         if (device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET)
 200                 identify->target_port_protocols |= SAS_PROTOCOL_SSP;
 201         if (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
 202                 identify->target_port_protocols |= SAS_PROTOCOL_STP;
 203         if (device_info & MPI2_SAS_DEVICE_INFO_SMP_TARGET)
 204                 identify->target_port_protocols |= SAS_PROTOCOL_SMP;
 205         if (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
 206                 identify->target_port_protocols |= SAS_PROTOCOL_SATA;
 207
 208         return 0;
 209 }
 210
 211 /**
 212  * mpt2sas_transport_done -  internal transport layer callback handler.
 213  * @ioc: per adapter object
 214  * @smid: system request message index
 215  * @msix_index: MSIX table index supplied by the OS
 216  * @reply: reply message frame(lower 32bit addr)
 217  *
 218  * Callback handler when sending internal generated transport cmds.
 219  * The callback index passed is `ioc->transport_cb_idx`
 220  *
 221  * Return 1 meaning mf should be freed from _base_interrupt
 222  *        0 means the mf is freed from this function.
 223  */
 224 u8
 225 mpt2sas_transport_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 226     u32 reply)
 227 {
 228         MPI2DefaultReply_t *mpi_reply;
 229
 230         mpi_reply =  mpt2sas_base_get_reply_virt_addr(ioc, reply);
 231         if (ioc->transport_cmds.status == MPT2_CMD_NOT_USED)
 232                 return 1;
 233         if (ioc->transport_cmds.smid != smid)
 234                 return 1;
 235         ioc->transport_cmds.status |= MPT2_CMD_COMPLETE;
 236         if (mpi_reply) {
 237                 memcpy(ioc->transport_cmds.reply, mpi_reply,
 238                     mpi_reply->MsgLength*4);
 239                 ioc->transport_cmds.status |= MPT2_CMD_REPLY_VALID;
 240         }
 241         ioc->transport_cmds.status &= ~MPT2_CMD_PENDING;
 242         complete(&ioc->transport_cmds.done);
 243         return 1;
 244 }
 245
 246 /* report manufacture request structure */
 247 struct rep_manu_request{
 248         u8 smp_frame_type;
 249         u8 function;
 250         u8 reserved;
 251         u8 request_length;
 252 };
 253
 254 /* report manufacture reply structure */
 255 struct rep_manu_reply{
 256         u8 smp_frame_type; /* 0x41 */
 257         u8 function; /* 0x01 */
 258         u8 function_result;
 259         u8 response_length;
 260         u16 expander_change_count;
 261         u8 reserved0[2];
 262         u8 sas_format;
 263         u8 reserved2[3];
 264         u8 vendor_id[SAS_EXPANDER_VENDOR_ID_LEN];
 265         u8 product_id[SAS_EXPANDER_PRODUCT_ID_LEN];
 266         u8 product_rev[SAS_EXPANDER_PRODUCT_REV_LEN];
 267         u8 component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN];
 268         u16 component_id;
 269         u8 component_revision_id;
 270         u8 reserved3;
 271         u8 vendor_specific[8];
 272 };
 273
 274 /**
 275  * _transport_expander_report_manufacture - obtain SMP report_manufacture
 276  * @ioc: per adapter object
 277  * @sas_address: expander sas address
 278  * @edev: the sas_expander_device object
 279  *
 280  * Fills in the sas_expander_device object when SMP port is created.
 281  *
 282  * Returns 0 for success, non-zero for failure.
 283  */
 284 static int
 285 _transport_expander_report_manufacture(struct MPT2SAS_ADAPTER *ioc,
 286     u64 sas_address, struct sas_expander_device *edev)
 287 {
 288         Mpi2SmpPassthroughRequest_t *mpi_request;
 289         Mpi2SmpPassthroughReply_t *mpi_reply;
 290         struct rep_manu_reply *manufacture_reply;
 291         struct rep_manu_request *manufacture_request;
 292         int rc;
 293         u16 smid;
 294         u32 ioc_state;
 295         unsigned long timeleft;
 296         void *psge;
 297         u32 sgl_flags;
 298         u8 issue_reset = 0;
 299         void *data_out = NULL;
 300         dma_addr_t data_out_dma;
 301         u32 sz;
 302         u64 *sas_address_le;
 303         u16 wait_state_count;
 304
 305         if (ioc->shost_recovery) {
 306                 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
 307                     __func__, ioc->name);
 308                 return -EFAULT;
 309         }
 310
 311         mutex_lock(&ioc->transport_cmds.mutex);
 312
 313         if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
 314                 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
 315                     ioc->name, __func__);
 316                 rc = -EAGAIN;
 317                 goto out;
 318         }
 319         ioc->transport_cmds.status = MPT2_CMD_PENDING;
 320
 321         wait_state_count = 0;
 322         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
 323         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
 324                 if (wait_state_count++ == 10) {
 325                         printk(MPT2SAS_ERR_FMT
 326                             "%s: failed due to ioc not operational\n",
 327                             ioc->name, __func__);
 328                         rc = -EFAULT;
 329                         goto out;
 330                 }
 331                 ssleep(1);
 332                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
 333                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
 334                     "operational state(count=%d)\n", ioc->name,
 335                     __func__, wait_state_count);
 336         }
 337         if (wait_state_count)
 338                 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
 339                     ioc->name, __func__);
 340
 341         smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
 342         if (!smid) {
 343                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
 344                     ioc->name, __func__);
 345                 rc = -EAGAIN;
 346                 goto out;
 347         }
 348
 349         rc = 0;
 350         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
 351         ioc->transport_cmds.smid = smid;
 352
 353         sz = sizeof(struct rep_manu_request) + sizeof(struct rep_manu_reply);
 354         data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
 355
 356         if (!data_out) {
 357                 printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
 358                     __LINE__, __func__);
 359                 rc = -ENOMEM;
 360                 mpt2sas_base_free_smid(ioc, smid);
 361                 goto out;
 362         }
 363
 364         manufacture_request = data_out;
 365         manufacture_request->smp_frame_type = 0x40;
 366         manufacture_request->function = 1;
 367         manufacture_request->reserved = 0;
 368         manufacture_request->request_length = 0;
 369
 370         memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
 371         mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
 372         mpi_request->PhysicalPort = 0xFF;
 373         mpi_request->VF_ID = 0; /* TODO */
 374         mpi_request->VP_ID = 0;
 375         sas_address_le = (u64 *)&mpi_request->SASAddress;
 376         *sas_address_le = cpu_to_le64(sas_address);
 377         mpi_request->RequestDataLength =
 378             cpu_to_le16(sizeof(struct rep_manu_request));
 379         psge = &mpi_request->SGL;
 380
 381         /* WRITE sgel first */
 382         sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
 383             MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
 384         sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
 385         ioc->base_add_sg_single(psge, sgl_flags |
 386             sizeof(struct rep_manu_request), data_out_dma);
 387
 388         /* incr sgel */
 389         psge += ioc->sge_size;
 390
 391         /* READ sgel last */
 392         sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
 393             MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
 394             MPI2_SGE_FLAGS_END_OF_LIST);
 395         sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
 396         ioc->base_add_sg_single(psge, sgl_flags |
 397             sizeof(struct rep_manu_reply), data_out_dma +
 398             sizeof(struct rep_manu_request));
 399
 400         dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "report_manufacture - "
 401             "send to sas_addr(0x%016llx)\n", ioc->name,
 402             (unsigned long long)sas_address));
 403         mpt2sas_base_put_smid_default(ioc, smid);
 404         init_completion(&ioc->transport_cmds.done);
 405         timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
 406             10*HZ);
 407
 408         if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
 409                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
 410                     ioc->name, __func__);
 411                 _debug_dump_mf(mpi_request,
 412                     sizeof(Mpi2SmpPassthroughRequest_t)/4);
 413                 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
 414                         issue_reset = 1;
 415                 goto issue_host_reset;
 416         }
 417
 418         dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "report_manufacture - "
 419             "complete\n", ioc->name));
 420
 421         if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
 422                 u8 *tmp;
 423
 424                 mpi_reply = ioc->transport_cmds.reply;
 425
 426                 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
 427                     "report_manufacture - reply data transfer size(%d)\n",
 428                     ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));
 429
 430                 if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
 431                     sizeof(struct rep_manu_reply))
 432                         goto out;
 433
 434                 manufacture_reply = data_out + sizeof(struct rep_manu_request);
 435                 strncpy(edev->vendor_id, manufacture_reply->vendor_id,
 436                      SAS_EXPANDER_VENDOR_ID_LEN);
 437                 strncpy(edev->product_id, manufacture_reply->product_id,
 438                      SAS_EXPANDER_PRODUCT_ID_LEN);
 439                 strncpy(edev->product_rev, manufacture_reply->product_rev,
 440                      SAS_EXPANDER_PRODUCT_REV_LEN);
 441                 edev->level = manufacture_reply->sas_format & 1;
 442                 if (edev->level) {
 443                         strncpy(edev->component_vendor_id,
 444                             manufacture_reply->component_vendor_id,
 445                              SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN);
 446                         tmp = (u8 *)&manufacture_reply->component_id;
 447                         edev->component_id = tmp[0] << 8 | tmp[1];
 448                         edev->component_revision_id =
 449                             manufacture_reply->component_revision_id;
 450                 }
 451         } else
 452                 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
 453                     "report_manufacture - no reply\n", ioc->name));
 454
 455  issue_host_reset:
 456         if (issue_reset)
 457                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
 458                     FORCE_BIG_HAMMER);
 459  out:
 460         ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
 461         if (data_out)
 462                 pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);
 463
 464         mutex_unlock(&ioc->transport_cmds.mutex);
 465         return rc;
 466 }
 467
 468
 469 /**
 470  * _transport_delete_duplicate_port - (see below description)
 471  * @ioc: per adapter object
 472  * @sas_node: sas node object (either expander or sas host)
 473  * @sas_address: sas address of device being added
 474  * @phy_num: phy number
 475  *
 476  * This function is called when attempting to add a new port that is claiming
 477  * the same phy resources already in use by another port.  If we don't release
 478  * the claimed phy resources, the sas transport layer will hang from the BUG
 479  * in sas_port_add_phy.
 480  *
 481  * The reason we would hit this issue is becuase someone is changing the
 482  * sas address of a device on the fly, meanwhile controller firmware sends
 483  * EVENTs out of order when removing the previous instance of the device.
 484  */
 485 static void
 486 _transport_delete_duplicate_port(struct MPT2SAS_ADAPTER *ioc,
 487     struct _sas_node *sas_node, u64 sas_address, int phy_num)
 488 {
 489         struct _sas_port *mpt2sas_port, *mpt2sas_port_duplicate;
 490         struct _sas_phy *mpt2sas_phy;
 491
 492         printk(MPT2SAS_ERR_FMT "new device located at sas_addr(0x%016llx), "
 493             "phy_id(%d)\n", ioc->name, (unsigned long long)sas_address,
 494             phy_num);
 495
 496         mpt2sas_port_duplicate = NULL;
 497         list_for_each_entry(mpt2sas_port, &sas_node->sas_port_list, port_list) {
 498                 dev_printk(KERN_ERR, &mpt2sas_port->port->dev,
 499                     "existing device at sas_addr(0x%016llx), num_phys(%d)\n",
 500                     (unsigned long long)
 501                     mpt2sas_port->remote_identify.sas_address,
 502                     mpt2sas_port->num_phys);
 503                 list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
 504                     port_siblings) {
 505                         dev_printk(KERN_ERR, &mpt2sas_phy->phy->dev,
 506                             "phy_number(%d)\n", mpt2sas_phy->phy_id);
 507                         if (mpt2sas_phy->phy_id == phy_num)
 508                                 mpt2sas_port_duplicate = mpt2sas_port;
 509                 }
 510         }
 511
 512         if (!mpt2sas_port_duplicate)
 513                 return;
 514
 515         dev_printk(KERN_ERR, &mpt2sas_port_duplicate->port->dev,
 516             "deleting duplicate device at sas_addr(0x%016llx), phy(%d)!!!!\n",
 517             (unsigned long long)
 518             mpt2sas_port_duplicate->remote_identify.sas_address, phy_num);
 519         ioc->logging_level |= MPT_DEBUG_TRANSPORT;
 520         mpt2sas_transport_port_remove(ioc,
 521             mpt2sas_port_duplicate->remote_identify.sas_address,
 522             sas_node->sas_address);
 523         ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
 524 }
 525
 526 /**
 527  * _transport_sanity_check - sanity check when adding a new port
 528  * @ioc: per adapter object
 529  * @sas_node: sas node object (either expander or sas host)
 530  * @sas_address: sas address of device being added
 531  *
 532  * See the explanation above from _transport_delete_duplicate_port
 533  */
 534 static void
 535 _transport_sanity_check(struct MPT2SAS_ADAPTER *ioc, struct _sas_node *sas_node,
 536      u64 sas_address)
 537 {
 538         int i;
 539
 540         for (i = 0; i < sas_node->num_phys; i++)
 541                 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
 542                         if (sas_node->phy[i].phy_belongs_to_port)
 543                                 _transport_delete_duplicate_port(ioc, sas_node,
 544                                         sas_address, i);
 545 }
 546
 547 /**
 548  * mpt2sas_transport_port_add - insert port to the list
 549  * @ioc: per adapter object
 550  * @handle: handle of attached device
 551  * @sas_address: sas address of parent expander or sas host
 552  * Context: This function will acquire ioc->sas_node_lock.
 553  *
 554  * Adding new port object to the sas_node->sas_port_list.
 555  *
 556  * Returns mpt2sas_port.
 557  */
 558 struct _sas_port *
 559 mpt2sas_transport_port_add(struct MPT2SAS_ADAPTER *ioc, u16 handle,
 560     u64 sas_address)
 561 {
 562         struct _sas_phy *mpt2sas_phy, *next;
 563         struct _sas_port *mpt2sas_port;
 564         unsigned long flags;
 565         struct _sas_node *sas_node;
 566         struct sas_rphy *rphy;
 567         int i;
 568         struct sas_port *port;
 569
 570         mpt2sas_port = kzalloc(sizeof(struct _sas_port),
 571             GFP_KERNEL);
 572         if (!mpt2sas_port) {
 573                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 574                     ioc->name, __FILE__, __LINE__, __func__);
 575                 return NULL;
 576         }
 577
 578         INIT_LIST_HEAD(&mpt2sas_port->port_list);
 579         INIT_LIST_HEAD(&mpt2sas_port->phy_list);
 580         spin_lock_irqsave(&ioc->sas_node_lock, flags);
 581         sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
 582         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
 583
 584         if (!sas_node) {
 585                 printk(MPT2SAS_ERR_FMT "%s: Could not find "
 586                     "parent sas_address(0x%016llx)!\n", ioc->name,
 587                     __func__, (unsigned long long)sas_address);
 588                 goto out_fail;
 589         }
 590
 591         if ((_transport_set_identify(ioc, handle,
 592             &mpt2sas_port->remote_identify))) {
 593                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 594                     ioc->name, __FILE__, __LINE__, __func__);
 595                 goto out_fail;
 596         }
 597
 598         if (mpt2sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
 599                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 600                     ioc->name, __FILE__, __LINE__, __func__);
 601                 goto out_fail;
 602         }
 603
 604         _transport_sanity_check(ioc, sas_node,
 605             mpt2sas_port->remote_identify.sas_address);
 606
 607         for (i = 0; i < sas_node->num_phys; i++) {
 608                 if (sas_node->phy[i].remote_identify.sas_address !=
 609                     mpt2sas_port->remote_identify.sas_address)
 610                         continue;
 611                 list_add_tail(&sas_node->phy[i].port_siblings,
 612                     &mpt2sas_port->phy_list);
 613                 mpt2sas_port->num_phys++;
 614         }
 615
 616         if (!mpt2sas_port->num_phys) {
 617                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 618                     ioc->name, __FILE__, __LINE__, __func__);
 619                 goto out_fail;
 620         }
 621
 622         port = sas_port_alloc_num(sas_node->parent_dev);
 623         if ((sas_port_add(port))) {
 624                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 625                     ioc->name, __FILE__, __LINE__, __func__);
 626                 goto out_fail;
 627         }
 628
 629         list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
 630             port_siblings) {
 631                 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 632                         dev_printk(KERN_INFO, &port->dev, "add: handle(0x%04x)"
 633                             ", sas_addr(0x%016llx), phy(%d)\n", handle,
 634                             (unsigned long long)
 635                             mpt2sas_port->remote_identify.sas_address,
 636                             mpt2sas_phy->phy_id);
 637                 sas_port_add_phy(port, mpt2sas_phy->phy);
 638                 mpt2sas_phy->phy_belongs_to_port = 1;
 639         }
 640
 641         mpt2sas_port->port = port;
 642         if (mpt2sas_port->remote_identify.device_type == SAS_END_DEVICE)
 643                 rphy = sas_end_device_alloc(port);
 644         else
 645                 rphy = sas_expander_alloc(port,
 646                     mpt2sas_port->remote_identify.device_type);
 647
 648         rphy->identify = mpt2sas_port->remote_identify;
 649         if ((sas_rphy_add(rphy))) {
 650                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 651                     ioc->name, __FILE__, __LINE__, __func__);
 652         }
 653         if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 654                 dev_printk(KERN_INFO, &rphy->dev, "add: handle(0x%04x), "
 655                     "sas_addr(0x%016llx)\n", handle,
 656                     (unsigned long long)
 657                     mpt2sas_port->remote_identify.sas_address);
 658         mpt2sas_port->rphy = rphy;
 659         spin_lock_irqsave(&ioc->sas_node_lock, flags);
 660         list_add_tail(&mpt2sas_port->port_list, &sas_node->sas_port_list);
 661         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
 662
 663         /* fill in report manufacture */
 664         if (mpt2sas_port->remote_identify.device_type ==
 665             MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
 666             mpt2sas_port->remote_identify.device_type ==
 667             MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
 668                 _transport_expander_report_manufacture(ioc,
 669                     mpt2sas_port->remote_identify.sas_address,
 670                     rphy_to_expander_device(rphy));
 671
 672         return mpt2sas_port;
 673
 674  out_fail:
 675         list_for_each_entry_safe(mpt2sas_phy, next, &mpt2sas_port->phy_list,
 676             port_siblings)
 677                 list_del(&mpt2sas_phy->port_siblings);
 678         kfree(mpt2sas_port);
 679         return NULL;
 680 }
 681
 682 /**
 683  * mpt2sas_transport_port_remove - remove port from the list
 684  * @ioc: per adapter object
 685  * @sas_address: sas address of attached device
 686  * @sas_address_parent: sas address of parent expander or sas host
 687  * Context: This function will acquire ioc->sas_node_lock.
 688  *
 689  * Removing object and freeing associated memory from the
 690  * ioc->sas_port_list.
 691  *
 692  * Return nothing.
 693  */
 694 void
 695 mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
 696     u64 sas_address_parent)
 697 {
 698         int i;
 699         unsigned long flags;
 700         struct _sas_port *mpt2sas_port, *next;
 701         struct _sas_node *sas_node;
 702         u8 found = 0;
 703         struct _sas_phy *mpt2sas_phy, *next_phy;
 704
 705         spin_lock_irqsave(&ioc->sas_node_lock, flags);
 706         sas_node = _transport_sas_node_find_by_sas_address(ioc,
 707             sas_address_parent);
 708         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
 709         if (!sas_node)
 710                 return;
 711         list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
 712             port_list) {
 713                 if (mpt2sas_port->remote_identify.sas_address != sas_address)
 714                         continue;
 715                 found = 1;
 716                 list_del(&mpt2sas_port->port_list);
 717                 goto out;
 718         }
 719  out:
 720         if (!found)
 721                 return;
 722
 723         for (i = 0; i < sas_node->num_phys; i++) {
 724                 if (sas_node->phy[i].remote_identify.sas_address == sas_address)
 725                         memset(&sas_node->phy[i].remote_identify, 0 ,
 726                             sizeof(struct sas_identify));
 727         }
 728
 729         list_for_each_entry_safe(mpt2sas_phy, next_phy,
 730             &mpt2sas_port->phy_list, port_siblings) {
 731                 if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 732                         dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
 733                             "remove: sas_addr(0x%016llx), phy(%d)\n",
 734                             (unsigned long long)
 735                             mpt2sas_port->remote_identify.sas_address,
 736                             mpt2sas_phy->phy_id);
 737                 mpt2sas_phy->phy_belongs_to_port = 0;
 738                 sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
 739                 list_del(&mpt2sas_phy->port_siblings);
 740         }
 741         sas_port_delete(mpt2sas_port->port);
 742         kfree(mpt2sas_port);
 743 }
 744
 745 /**
 746  * mpt2sas_transport_add_host_phy - report sas_host phy to transport
 747  * @ioc: per adapter object
 748  * @mpt2sas_phy: mpt2sas per phy object
 749  * @phy_pg0: sas phy page 0
 750  * @parent_dev: parent device class object
 751  *
 752  * Returns 0 for success, non-zero for failure.
 753  */
 754 int
 755 mpt2sas_transport_add_host_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
 756     *mpt2sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
 757 {
 758         struct sas_phy *phy;
 759         int phy_index = mpt2sas_phy->phy_id;
 760
 761
 762         INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
 763         phy = sas_phy_alloc(parent_dev, phy_index);
 764         if (!phy) {
 765                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 766                     ioc->name, __FILE__, __LINE__, __func__);
 767                 return -1;
 768         }
 769         if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
 770             &mpt2sas_phy->identify))) {
 771                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 772                     ioc->name, __FILE__, __LINE__, __func__);
 773                 return -1;
 774         }
 775         phy->identify = mpt2sas_phy->identify;
 776         mpt2sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
 777         if (mpt2sas_phy->attached_handle)
 778                 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
 779                     &mpt2sas_phy->remote_identify);
 780         phy->identify.phy_identifier = mpt2sas_phy->phy_id;
 781         phy->negotiated_linkrate = _transport_convert_phy_link_rate(
 782             phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
 783         phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
 784             phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
 785         phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
 786             phy_pg0.HwLinkRate >> 4);
 787         phy->minimum_linkrate = _transport_convert_phy_link_rate(
 788             phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
 789         phy->maximum_linkrate = _transport_convert_phy_link_rate(
 790             phy_pg0.ProgrammedLinkRate >> 4);
 791
 792         if ((sas_phy_add(phy))) {
 793                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 794                     ioc->name, __FILE__, __LINE__, __func__);
 795                 sas_phy_free(phy);
 796                 return -1;
 797         }
 798         if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 799                 dev_printk(KERN_INFO, &phy->dev,
 800                     "add: handle(0x%04x), sas_addr(0x%016llx)\n"
 801                     "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
 802                     mpt2sas_phy->handle, (unsigned long long)
 803                     mpt2sas_phy->identify.sas_address,
 804                     mpt2sas_phy->attached_handle,
 805                     (unsigned long long)
 806                     mpt2sas_phy->remote_identify.sas_address);
 807         mpt2sas_phy->phy = phy;
 808         return 0;
 809 }
 810
 811
 812 /**
 813  * mpt2sas_transport_add_expander_phy - report expander phy to transport
 814  * @ioc: per adapter object
 815  * @mpt2sas_phy: mpt2sas per phy object
 816  * @expander_pg1: expander page 1
 817  * @parent_dev: parent device class object
 818  *
 819  * Returns 0 for success, non-zero for failure.
 820  */
 821 int
 822 mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
 823     *mpt2sas_phy, Mpi2ExpanderPage1_t expander_pg1, struct device *parent_dev)
 824 {
 825         struct sas_phy *phy;
 826         int phy_index = mpt2sas_phy->phy_id;
 827
 828         INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
 829         phy = sas_phy_alloc(parent_dev, phy_index);
 830         if (!phy) {
 831                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 832                     ioc->name, __FILE__, __LINE__, __func__);
 833                 return -1;
 834         }
 835         if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
 836             &mpt2sas_phy->identify))) {
 837                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 838                     ioc->name, __FILE__, __LINE__, __func__);
 839                 return -1;
 840         }
 841         phy->identify = mpt2sas_phy->identify;
 842         mpt2sas_phy->attached_handle =
 843             le16_to_cpu(expander_pg1.AttachedDevHandle);
 844         if (mpt2sas_phy->attached_handle)
 845                 _transport_set_identify(ioc, mpt2sas_phy->attached_handle,
 846                     &mpt2sas_phy->remote_identify);
 847         phy->identify.phy_identifier = mpt2sas_phy->phy_id;
 848         phy->negotiated_linkrate = _transport_convert_phy_link_rate(
 849             expander_pg1.NegotiatedLinkRate &
 850             MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
 851         phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
 852             expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
 853         phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
 854             expander_pg1.HwLinkRate >> 4);
 855         phy->minimum_linkrate = _transport_convert_phy_link_rate(
 856             expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
 857         phy->maximum_linkrate = _transport_convert_phy_link_rate(
 858             expander_pg1.ProgrammedLinkRate >> 4);
 859
 860         if ((sas_phy_add(phy))) {
 861                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 862                     ioc->name, __FILE__, __LINE__, __func__);
 863                 sas_phy_free(phy);
 864                 return -1;
 865         }
 866         if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 867                 dev_printk(KERN_INFO, &phy->dev,
 868                     "add: handle(0x%04x), sas_addr(0x%016llx)\n"
 869                     "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
 870                     mpt2sas_phy->handle, (unsigned long long)
 871                     mpt2sas_phy->identify.sas_address,
 872                     mpt2sas_phy->attached_handle,
 873                     (unsigned long long)
 874                     mpt2sas_phy->remote_identify.sas_address);
 875         mpt2sas_phy->phy = phy;
 876         return 0;
 877 }
 878
 879 /**
 880  * mpt2sas_transport_update_links - refreshing phy link changes
 881  * @ioc: per adapter object
 882  * @sas_address: sas address of parent expander or sas host
 883  * @handle: attached device handle
 884  * @phy_numberv: phy number
 885  * @link_rate: new link rate
 886  *
 887  * Returns nothing.
 888  */
 889 void
 890 mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc,
 891      u64 sas_address, u16 handle, u8 phy_number, u8 link_rate)
 892 {
 893         unsigned long flags;
 894         struct _sas_node *sas_node;
 895         struct _sas_phy *mpt2sas_phy;
 896
 897         if (ioc->shost_recovery)
 898                 return;
 899
 900         spin_lock_irqsave(&ioc->sas_node_lock, flags);
 901         sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
 902         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
 903         if (!sas_node)
 904                 return;
 905
 906         mpt2sas_phy = &sas_node->phy[phy_number];
 907         mpt2sas_phy->attached_handle = handle;
 908         if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5))
 909                 _transport_set_identify(ioc, handle,
 910                     &mpt2sas_phy->remote_identify);
 911         else
 912                 memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
 913                     sas_identify));
 914
 915         if (mpt2sas_phy->phy)
 916                 mpt2sas_phy->phy->negotiated_linkrate =
 917                     _transport_convert_phy_link_rate(link_rate);
 918
 919         if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
 920                 dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
 921                     "refresh: parent sas_addr(0x%016llx),\n"
 922                     "\tlink_rate(0x%02x), phy(%d)\n"
 923                     "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
 924                     (unsigned long long)sas_address,
 925                     link_rate, phy_number, handle, (unsigned long long)
 926                     mpt2sas_phy->remote_identify.sas_address);
 927 }
 928
 929 static inline void *
 930 phy_to_ioc(struct sas_phy *phy)
 931 {
 932         struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
 933         return shost_priv(shost);
 934 }
 935
 936 static inline void *
 937 rphy_to_ioc(struct sas_rphy *rphy)
 938 {
 939         struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
 940         return shost_priv(shost);
 941 }
 942
 943 static struct _sas_phy *
 944 _transport_find_local_phy(struct MPT2SAS_ADAPTER *ioc, struct sas_phy *phy)
 945 {
 946         int i;
 947
 948         for (i = 0; i < ioc->sas_hba.num_phys; i++)
 949                 if (ioc->sas_hba.phy[i].phy == phy)
 950                         return(&ioc->sas_hba.phy[i]);
 951         return NULL;
 952 }
 953
 954 /**
 955  * _transport_get_linkerrors -
 956  * @phy: The sas phy object
 957  *
 958  * Only support sas_host direct attached phys.
 959  * Returns 0 for success, non-zero for failure.
 960  *
 961  */
 962 static int
 963 _transport_get_linkerrors(struct sas_phy *phy)
 964 {
 965         struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
 966         struct _sas_phy *mpt2sas_phy;
 967         Mpi2ConfigReply_t mpi_reply;
 968         Mpi2SasPhyPage1_t phy_pg1;
 969
 970         mpt2sas_phy = _transport_find_local_phy(ioc, phy);
 971
 972         if (!mpt2sas_phy) /* this phy not on sas_host */
 973                 return -EINVAL;
 974
 975         if ((mpt2sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
 976                     mpt2sas_phy->phy_id))) {
 977                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
 978                     ioc->name, __FILE__, __LINE__, __func__);
 979                 return -ENXIO;
 980         }
 981
 982         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
 983                 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
 984                     "(0x%04x), loginfo(0x%08x)\n", ioc->name,
 985                     mpt2sas_phy->phy_id,
 986                     le16_to_cpu(mpi_reply.IOCStatus),
 987                     le32_to_cpu(mpi_reply.IOCLogInfo));
 988
 989         phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
 990         phy->running_disparity_error_count =
 991             le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
 992         phy->loss_of_dword_sync_count =
 993             le32_to_cpu(phy_pg1.LossDwordSynchCount);
 994         phy->phy_reset_problem_count =
 995             le32_to_cpu(phy_pg1.PhyResetProblemCount);
 996         return 0;
 997 }
 998
 999 /**
1000  * _transport_get_enclosure_identifier -
1001  * @phy: The sas phy object
1002  *
1003  * Obtain the enclosure logical id for an expander.
1004  * Returns 0 for success, non-zero for failure.
1005  */
1006 static int
1007 _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
1008 {
1009         struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1010         struct _sas_node *sas_expander;
1011         unsigned long flags;
1012
1013         spin_lock_irqsave(&ioc->sas_node_lock, flags);
1014         sas_expander = mpt2sas_scsih_expander_find_by_sas_address(ioc,
1015             rphy->identify.sas_address);
1016         spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1017
1018         if (!sas_expander)
1019                 return -ENXIO;
1020
1021         *identifier = sas_expander->enclosure_logical_id;
1022         return 0;
1023 }
1024
1025 /**
1026  * _transport_get_bay_identifier -
1027  * @phy: The sas phy object
1028  *
1029  * Returns the slot id for a device that resides inside an enclosure.
1030  */
1031 static int
1032 _transport_get_bay_identifier(struct sas_rphy *rphy)
1033 {
1034         struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1035         struct _sas_device *sas_device;
1036         unsigned long flags;
1037
1038         spin_lock_irqsave(&ioc->sas_device_lock, flags);
1039         sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
1040             rphy->identify.sas_address);
1041         spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1042
1043         if (!sas_device)
1044                 return -ENXIO;
1045
1046         return sas_device->slot;
1047 }
1048
1049 /**
1050  * _transport_phy_reset -
1051  * @phy: The sas phy object
1052  * @hard_reset:
1053  *
1054  * Only support sas_host direct attached phys.
1055  * Returns 0 for success, non-zero for failure.
1056  */
1057 static int
1058 _transport_phy_reset(struct sas_phy *phy, int hard_reset)
1059 {
1060         struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1061         struct _sas_phy *mpt2sas_phy;
1062         Mpi2SasIoUnitControlReply_t mpi_reply;
1063         Mpi2SasIoUnitControlRequest_t mpi_request;
1064
1065         mpt2sas_phy = _transport_find_local_phy(ioc, phy);
1066
1067         if (!mpt2sas_phy) /* this phy not on sas_host */
1068                 return -EINVAL;
1069
1070         memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t));
1071         mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
1072         mpi_request.Operation = hard_reset ?
1073             MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1074         mpi_request.PhyNum = mpt2sas_phy->phy_id;
1075
1076         if ((mpt2sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
1077                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1078                     ioc->name, __FILE__, __LINE__, __func__);
1079                 return -ENXIO;
1080         }
1081
1082         if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
1083                 printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
1084                     "(0x%04x), loginfo(0x%08x)\n", ioc->name,
1085                     mpt2sas_phy->phy_id,
1086                     le16_to_cpu(mpi_reply.IOCStatus),
1087                     le32_to_cpu(mpi_reply.IOCLogInfo));
1088
1089         return 0;
1090 }
1091
1092 /**
1093  * _transport_phy_enable - enable/disable phys
1094  * @phy: The sas phy object
1095  * @enable: enable phy when true
1096  *
1097  * Only support sas_host direct attached phys.
1098  * Returns 0 for success, non-zero for failure.
1099  */
1100 static int
1101 _transport_phy_enable(struct sas_phy *phy, int enable)
1102 {
1103         struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1104         struct _sas_phy *mpt2sas_phy;
1105         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1106         Mpi2ConfigReply_t mpi_reply;
1107         u16 ioc_status;
1108         u16 sz;
1109         int rc = 0;
1110
1111         mpt2sas_phy = _transport_find_local_phy(ioc, phy);
1112
1113         if (!mpt2sas_phy) /* this phy not on sas_host */
1114                 return -EINVAL;
1115
1116         /* sas_iounit page 1 */
1117         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1118             sizeof(Mpi2SasIOUnit1PhyData_t));
1119         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1120         if (!sas_iounit_pg1) {
1121                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1122                     ioc->name, __FILE__, __LINE__, __func__);
1123                 rc = -ENOMEM;
1124                 goto out;
1125         }
1126         if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1127             sas_iounit_pg1, sz))) {
1128                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1129                     ioc->name, __FILE__, __LINE__, __func__);
1130                 rc = -ENXIO;
1131                 goto out;
1132         }
1133         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1134             MPI2_IOCSTATUS_MASK;
1135         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1136                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1137                     ioc->name, __FILE__, __LINE__, __func__);
1138                 rc = -EIO;
1139                 goto out;
1140         }
1141
1142         if (enable)
1143                 sas_iounit_pg1->PhyData[mpt2sas_phy->phy_id].PhyFlags
1144                     &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1145         else
1146                 sas_iounit_pg1->PhyData[mpt2sas_phy->phy_id].PhyFlags
1147                     |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
1148
1149         mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);
1150
1151  out:
1152         kfree(sas_iounit_pg1);
1153         return rc;
1154 }
1155
1156 /**
1157  * _transport_phy_speed - set phy min/max link rates
1158  * @phy: The sas phy object
1159  * @rates: rates defined in sas_phy_linkrates
1160  *
1161  * Only support sas_host direct attached phys.
1162  * Returns 0 for success, non-zero for failure.
1163  */
1164 static int
1165 _transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
1166 {
1167         struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1168         struct _sas_phy *mpt2sas_phy;
1169         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1170         Mpi2SasPhyPage0_t phy_pg0;
1171         Mpi2ConfigReply_t mpi_reply;
1172         u16 ioc_status;
1173         u16 sz;
1174         int i;
1175         int rc = 0;
1176
1177         mpt2sas_phy = _transport_find_local_phy(ioc, phy);
1178
1179         if (!mpt2sas_phy) /* this phy not on sas_host */
1180                 return -EINVAL;
1181
1182         if (!rates->minimum_linkrate)
1183                 rates->minimum_linkrate = phy->minimum_linkrate;
1184         else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
1185                 rates->minimum_linkrate = phy->minimum_linkrate_hw;
1186
1187         if (!rates->maximum_linkrate)
1188                 rates->maximum_linkrate = phy->maximum_linkrate;
1189         else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
1190                 rates->maximum_linkrate = phy->maximum_linkrate_hw;
1191
1192         /* sas_iounit page 1 */
1193         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
1194             sizeof(Mpi2SasIOUnit1PhyData_t));
1195         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
1196         if (!sas_iounit_pg1) {
1197                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1198                     ioc->name, __FILE__, __LINE__, __func__);
1199                 rc = -ENOMEM;
1200                 goto out;
1201         }
1202         if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
1203             sas_iounit_pg1, sz))) {
1204                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1205                     ioc->name, __FILE__, __LINE__, __func__);
1206                 rc = -ENXIO;
1207                 goto out;
1208         }
1209         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
1210             MPI2_IOCSTATUS_MASK;
1211         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
1212                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1213                     ioc->name, __FILE__, __LINE__, __func__);
1214                 rc = -EIO;
1215                 goto out;
1216         }
1217
1218         for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1219                 if (mpt2sas_phy->phy_id != i) {
1220                         sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1221                             (ioc->sas_hba.phy[i].phy->minimum_linkrate +
1222                             (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
1223                 } else {
1224                         sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
1225                             (rates->minimum_linkrate +
1226                             (rates->maximum_linkrate << 4));
1227                 }
1228         }
1229
1230         if (mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
1231             sz)) {
1232                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
1233                     ioc->name, __FILE__, __LINE__, __func__);
1234                 rc = -ENXIO;
1235                 goto out;
1236         }
1237
1238         /* link reset */
1239         _transport_phy_reset(phy, 0);
1240
1241         /* read phy page 0, then update the rates in the sas transport phy */
1242         if (!mpt2sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1243             mpt2sas_phy->phy_id)) {
1244                 phy->minimum_linkrate = _transport_convert_phy_link_rate(
1245                     phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
1246                 phy->maximum_linkrate = _transport_convert_phy_link_rate(
1247                     phy_pg0.ProgrammedLinkRate >> 4);
1248                 phy->negotiated_linkrate = _transport_convert_phy_link_rate(
1249                     phy_pg0.NegotiatedLinkRate &
1250                     MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
1251         }
1252
1253  out:
1254         kfree(sas_iounit_pg1);
1255         return rc;
1256 }
1257
1258
1259 /**
1260  * _transport_smp_handler - transport portal for smp passthru
1261  * @shost: shost object
1262  * @rphy: sas transport rphy object
1263  * @req:
1264  *
1265  * This used primarily for smp_utils.
1266  * Example:
1267  *           smp_rep_general /sys/class/bsg/expander-5:0
1268  */
1269 static int
1270 _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
1271     struct request *req)
1272 {
1273         struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
1274         Mpi2SmpPassthroughRequest_t *mpi_request;
1275         Mpi2SmpPassthroughReply_t *mpi_reply;
1276         int rc;
1277         u16 smid;
1278         u32 ioc_state;
1279         unsigned long timeleft;
1280         void *psge;
1281         u32 sgl_flags;
1282         u8 issue_reset = 0;
1283         dma_addr_t dma_addr_in = 0;
1284         dma_addr_t dma_addr_out = 0;
1285         u16 wait_state_count;
1286         struct request *rsp = req->next_rq;
1287
1288         if (!rsp) {
1289                 printk(MPT2SAS_ERR_FMT "%s: the smp response space is "
1290                     "missing\n", ioc->name, __func__);
1291                 return -EINVAL;
1292         }
1293
1294         /* do we need to support multiple segments? */
1295         if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) {
1296                 printk(MPT2SAS_ERR_FMT "%s: multiple segments req %u %u, "
1297                     "rsp %u %u\n", ioc->name, __func__, req->bio->bi_vcnt,
1298                     blk_rq_bytes(req), rsp->bio->bi_vcnt, blk_rq_bytes(rsp));
1299                 return -EINVAL;
1300         }
1301
1302         if (ioc->shost_recovery) {
1303                 printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
1304                     __func__, ioc->name);
1305                 return -EFAULT;
1306         }
1307
1308         rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
1309         if (rc)
1310                 return rc;
1311
1312         if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
1313                 printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n", ioc->name,
1314                     __func__);
1315                 rc = -EAGAIN;
1316                 goto out;
1317         }
1318         ioc->transport_cmds.status = MPT2_CMD_PENDING;
1319
1320         wait_state_count = 0;
1321         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1322         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
1323                 if (wait_state_count++ == 10) {
1324                         printk(MPT2SAS_ERR_FMT
1325                             "%s: failed due to ioc not operational\n",
1326                             ioc->name, __func__);
1327                         rc = -EFAULT;
1328                         goto out;
1329                 }
1330                 ssleep(1);
1331                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
1332                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
1333                     "operational state(count=%d)\n", ioc->name,
1334                     __func__, wait_state_count);
1335         }
1336         if (wait_state_count)
1337                 printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
1338                     ioc->name, __func__);
1339
1340         smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
1341         if (!smid) {
1342                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
1343                     ioc->name, __func__);
1344                 rc = -EAGAIN;
1345                 goto out;
1346         }
1347
1348         rc = 0;
1349         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
1350         ioc->transport_cmds.smid = smid;
1351
1352         memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
1353         mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
1354         mpi_request->PhysicalPort = 0xFF;
1355         mpi_request->VF_ID = 0; /* TODO */
1356         mpi_request->VP_ID = 0;
1357         *((u64 *)&mpi_request->SASAddress) = (rphy) ?
1358             cpu_to_le64(rphy->identify.sas_address) :
1359             cpu_to_le64(ioc->sas_hba.sas_address);
1360         mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4);
1361         psge = &mpi_request->SGL;
1362
1363         /* WRITE sgel first */
1364         sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1365             MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
1366         sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1367         dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
1368                 blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
1369         if (!dma_addr_out) {
1370                 mpt2sas_base_free_smid(ioc, smid);
1371                 goto unmap;
1372         }
1373
1374         ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(req) - 4),
1375             dma_addr_out);
1376
1377         /* incr sgel */
1378         psge += ioc->sge_size;
1379
1380         /* READ sgel last */
1381         sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
1382             MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
1383             MPI2_SGE_FLAGS_END_OF_LIST);
1384         sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
1385         dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio),
1386                                      blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
1387         if (!dma_addr_in) {
1388                 mpt2sas_base_free_smid(ioc, smid);
1389                 goto unmap;
1390         }
1391
1392         ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(rsp) + 4),
1393             dma_addr_in);
1394
1395         dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
1396             "sending smp request\n", ioc->name, __func__));
1397
1398         mpt2sas_base_put_smid_default(ioc, smid);
1399         init_completion(&ioc->transport_cmds.done);
1400         timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
1401             10*HZ);
1402
1403         if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
1404                 printk(MPT2SAS_ERR_FMT "%s : timeout\n",
1405                     __func__, ioc->name);
1406                 _debug_dump_mf(mpi_request,
1407                     sizeof(Mpi2SmpPassthroughRequest_t)/4);
1408                 if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
1409                         issue_reset = 1;
1410                 goto issue_host_reset;
1411         }
1412
1413         dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT "%s - "
1414             "complete\n", ioc->name, __func__));
1415
1416         if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
1417
1418                 mpi_reply = ioc->transport_cmds.reply;
1419
1420                 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
1421                     "%s - reply data transfer size(%d)\n",
1422                     ioc->name, __func__,
1423                     le16_to_cpu(mpi_reply->ResponseDataLength)));
1424
1425                 memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
1426                 req->sense_len = sizeof(*mpi_reply);
1427                 req->resid_len = 0;
1428                 rsp->resid_len -=
1429                     le16_to_cpu(mpi_reply->ResponseDataLength);
1430         } else {
1431                 dtransportprintk(ioc, printk(MPT2SAS_DEBUG_FMT
1432                     "%s - no reply\n", ioc->name, __func__));
1433                 rc = -ENXIO;
1434         }
1435
1436  issue_host_reset:
1437         if (issue_reset) {
1438                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
1439                     FORCE_BIG_HAMMER);
1440                 rc = -ETIMEDOUT;
1441         }
1442
1443  unmap:
1444         if (dma_addr_out)
1445                 pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req),
1446                     PCI_DMA_BIDIRECTIONAL);
1447         if (dma_addr_in)
1448                 pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp),
1449                     PCI_DMA_BIDIRECTIONAL);
1450
1451  out:
1452         ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
1453         mutex_unlock(&ioc->transport_cmds.mutex);
1454         return rc;
1455 }
1456
1457 struct sas_function_template mpt2sas_transport_functions = {
1458         .get_linkerrors         = _transport_get_linkerrors,
1459         .get_enclosure_identifier = _transport_get_enclosure_identifier,
1460         .get_bay_identifier     = _transport_get_bay_identifier,
1461         .phy_reset              = _transport_phy_reset,
1462         .phy_enable             = _transport_phy_enable,
1463         .set_phy_speed          = _transport_phy_speed,
1464         .smp_handler            = _transport_smp_handler,
1465 };
1466
1467 struct scsi_transport_template *mpt2sas_transport_template;