sys/dev/mrsas/mrsas_cam.c

   1 /*
   2  * Copyright (c) 2015, AVAGO Tech. All rights reserved. Author: Marian Choy
   3  * Copyright (c) 2014, LSI Corp. All rights reserved. Author: Marian Choy
   4  * Support: freebsdraid@avagotech.com
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are
   8  * met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright notice,
  11  * this list of conditions and the following disclaimer. 2. Redistributions
  12  * in binary form must reproduce the above copyright notice, this list of
  13  * conditions and the following disclaimer in the documentation and/or other
  14  * materials provided with the distribution. 3. Neither the name of the
  15  * <ORGANIZATION> nor the names of its contributors may be used to endorse or
  16  * promote products derived from this software without specific prior written
  17  * permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  20  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  23  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  *
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __FBSDID("$FreeBSD$");
  35
  36 #include "dev/mrsas/mrsas.h"
  37
  38 #include <cam/cam.h>
  39 #include <cam/cam_ccb.h>
  40 #include <cam/cam_sim.h>
  41 #include <cam/cam_xpt_sim.h>
  42 #include <cam/cam_debug.h>
  43 #include <cam/cam_periph.h>
  44 #include <cam/cam_xpt_periph.h>
  45
  46 #include <cam/scsi/scsi_all.h>
  47 #include <cam/scsi/scsi_message.h>
  48 #include <sys/taskqueue.h>
  49 #include <sys/kernel.h>
  50
  51 #include <sys/time.h>                   /* XXX for pcpu.h */
  52 #include <sys/pcpu.h>                   /* XXX for PCPU_GET */
  53
  54 #define smp_processor_id()  PCPU_GET(cpuid)
  55
  56 /*
  57  * Function prototypes
  58  */
  59 int     mrsas_cam_attach(struct mrsas_softc *sc);
  60 int     mrsas_find_io_type(struct cam_sim *sim, union ccb *ccb);
  61 int     mrsas_bus_scan(struct mrsas_softc *sc);
  62 int     mrsas_bus_scan_sim(struct mrsas_softc *sc, struct cam_sim *sim);
  63 int
  64 mrsas_map_request(struct mrsas_softc *sc,
  65     struct mrsas_mpt_cmd *cmd, union ccb *ccb);
  66 int
  67 mrsas_build_ldio_rw(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
  68     union ccb *ccb);
  69 int
  70 mrsas_build_ldio_nonrw(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
  71     union ccb *ccb);
  72 int
  73 mrsas_build_syspdio(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
  74     union ccb *ccb, struct cam_sim *sim, u_int8_t fp_possible);
  75 int
  76 mrsas_setup_io(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
  77     union ccb *ccb, u_int32_t device_id,
  78     MRSAS_RAID_SCSI_IO_REQUEST * io_request);
  79 void    mrsas_xpt_freeze(struct mrsas_softc *sc);
  80 void    mrsas_xpt_release(struct mrsas_softc *sc);
  81 void    mrsas_cam_detach(struct mrsas_softc *sc);
  82 void    mrsas_release_mpt_cmd(struct mrsas_mpt_cmd *cmd);
  83 void    mrsas_unmap_request(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd);
  84 void    mrsas_cmd_done(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd);
  85 void
  86 mrsas_fire_cmd(struct mrsas_softc *sc, u_int32_t req_desc_lo,
  87     u_int32_t req_desc_hi);
  88 void
  89 mrsas_set_pd_lba(MRSAS_RAID_SCSI_IO_REQUEST * io_request,
  90     u_int8_t cdb_len, struct IO_REQUEST_INFO *io_info, union ccb *ccb,
  91     MR_DRV_RAID_MAP_ALL * local_map_ptr, u_int32_t ref_tag,
  92     u_int32_t ld_block_size);
  93 static void mrsas_freeze_simq(struct mrsas_mpt_cmd *cmd, struct cam_sim *sim);
  94 static void mrsas_cam_poll(struct cam_sim *sim);
  95 static void mrsas_action(struct cam_sim *sim, union ccb *ccb);
  96 static void mrsas_scsiio_timeout(void *data);
  97 static int mrsas_track_scsiio(struct mrsas_softc *sc, target_id_t id, u_int32_t bus_id);
  98 static void mrsas_tm_response_code(struct mrsas_softc *sc,
  99     MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply);
 100 static int mrsas_issue_tm(struct mrsas_softc *sc,
 101     MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc);
 102 static void
 103 mrsas_data_load_cb(void *arg, bus_dma_segment_t *segs,
 104     int nseg, int error);
 105 static int32_t
 106 mrsas_startio(struct mrsas_softc *sc, struct cam_sim *sim,
 107     union ccb *ccb);
 108
 109 static boolean_t mrsas_is_prp_possible(struct mrsas_mpt_cmd *cmd,
 110         bus_dma_segment_t *segs, int nsegs);
 111 static void mrsas_build_ieee_sgl(struct mrsas_mpt_cmd *cmd,
 112         bus_dma_segment_t *segs, int nseg);
 113 static void mrsas_build_prp_nvme(struct mrsas_mpt_cmd *cmd,
 114         bus_dma_segment_t *segs, int nseg);
 115
 116 struct mrsas_mpt_cmd *mrsas_get_mpt_cmd(struct mrsas_softc *sc);
 117 MRSAS_REQUEST_DESCRIPTOR_UNION *
 118         mrsas_get_request_desc(struct mrsas_softc *sc, u_int16_t index);
 119
 120 extern int mrsas_reset_targets(struct mrsas_softc *sc);
 121 extern u_int16_t MR_TargetIdToLdGet(u_int32_t ldTgtId, MR_DRV_RAID_MAP_ALL * map);
 122 extern u_int32_t
 123 MR_LdBlockSizeGet(u_int32_t ldTgtId, MR_DRV_RAID_MAP_ALL * map);
 124 extern void mrsas_isr(void *arg);
 125 extern void mrsas_aen_handler(struct mrsas_softc *sc);
 126 extern u_int8_t
 127 MR_BuildRaidContext(struct mrsas_softc *sc,
 128     struct IO_REQUEST_INFO *io_info, RAID_CONTEXT * pRAID_Context,
 129     MR_DRV_RAID_MAP_ALL * map);
 130 extern u_int16_t
 131 MR_LdSpanArrayGet(u_int32_t ld, u_int32_t span,
 132     MR_DRV_RAID_MAP_ALL * map);
 133 extern u_int16_t
 134 mrsas_get_updated_dev_handle(struct mrsas_softc *sc,
 135     PLD_LOAD_BALANCE_INFO lbInfo, struct IO_REQUEST_INFO *io_info);
 136 extern int mrsas_complete_cmd(struct mrsas_softc *sc, u_int32_t MSIxIndex);
 137 extern MR_LD_RAID *MR_LdRaidGet(u_int32_t ld, MR_DRV_RAID_MAP_ALL * map);
 138 extern void mrsas_disable_intr(struct mrsas_softc *sc);
 139 extern void mrsas_enable_intr(struct mrsas_softc *sc);
 140 void mrsas_prepare_secondRaid1_IO(struct mrsas_softc *sc,
 141     struct mrsas_mpt_cmd *cmd);
 142
 143 /*
 144  * mrsas_cam_attach:    Main entry to CAM subsystem
 145  * input:                               Adapter instance soft state
 146  *
 147  * This function is called from mrsas_attach() during initialization to perform
 148  * SIM allocations and XPT bus registration.  If the kernel version is 7.4 or
 149  * earlier, it would also initiate a bus scan.
 150  */
 151 int
 152 mrsas_cam_attach(struct mrsas_softc *sc)
 153 {
 154         struct cam_devq *devq;
 155         int mrsas_cam_depth;
 156
 157         mrsas_cam_depth = sc->max_scsi_cmds;
 158
 159         if ((devq = cam_simq_alloc(mrsas_cam_depth)) == NULL) {
 160                 device_printf(sc->mrsas_dev, "Cannot allocate SIM queue\n");
 161                 return (ENOMEM);
 162         }
 163         /*
 164          * Create SIM for bus 0 and register, also create path
 165          */
 166         sc->sim_0 = cam_sim_alloc(mrsas_action, mrsas_cam_poll, "mrsas", sc,
 167             device_get_unit(sc->mrsas_dev), &sc->sim_lock, mrsas_cam_depth,
 168             mrsas_cam_depth, devq);
 169         if (sc->sim_0 == NULL) {
 170                 cam_simq_free(devq);
 171                 device_printf(sc->mrsas_dev, "Cannot register SIM\n");
 172                 return (ENXIO);
 173         }
 174         /* Initialize taskqueue for Event Handling */
 175         TASK_INIT(&sc->ev_task, 0, (void *)mrsas_aen_handler, sc);
 176         sc->ev_tq = taskqueue_create("mrsas_taskq", M_NOWAIT | M_ZERO,
 177             taskqueue_thread_enqueue, &sc->ev_tq);
 178
 179         /* Run the task queue with lowest priority */
 180         taskqueue_start_threads(&sc->ev_tq, 1, 255, "%s taskq",
 181             device_get_nameunit(sc->mrsas_dev));
 182         mtx_lock(&sc->sim_lock);
 183         if (xpt_bus_register(sc->sim_0, sc->mrsas_dev, 0) != CAM_SUCCESS) {
 184                 cam_sim_free(sc->sim_0, TRUE);  /* passing true frees the devq */
 185                 mtx_unlock(&sc->sim_lock);
 186                 return (ENXIO);
 187         }
 188         if (xpt_create_path(&sc->path_0, NULL, cam_sim_path(sc->sim_0),
 189             CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 190                 xpt_bus_deregister(cam_sim_path(sc->sim_0));
 191                 cam_sim_free(sc->sim_0, TRUE);  /* passing true will free the
 192                                                  * devq */
 193                 mtx_unlock(&sc->sim_lock);
 194                 return (ENXIO);
 195         }
 196         mtx_unlock(&sc->sim_lock);
 197
 198         /*
 199          * Create SIM for bus 1 and register, also create path
 200          */
 201         sc->sim_1 = cam_sim_alloc(mrsas_action, mrsas_cam_poll, "mrsas", sc,
 202             device_get_unit(sc->mrsas_dev), &sc->sim_lock, mrsas_cam_depth,
 203             mrsas_cam_depth, devq);
 204         if (sc->sim_1 == NULL) {
 205                 cam_simq_free(devq);
 206                 device_printf(sc->mrsas_dev, "Cannot register SIM\n");
 207                 return (ENXIO);
 208         }
 209         mtx_lock(&sc->sim_lock);
 210         if (xpt_bus_register(sc->sim_1, sc->mrsas_dev, 1) != CAM_SUCCESS) {
 211                 cam_sim_free(sc->sim_1, TRUE);  /* passing true frees the devq */
 212                 mtx_unlock(&sc->sim_lock);
 213                 return (ENXIO);
 214         }
 215         if (xpt_create_path(&sc->path_1, NULL, cam_sim_path(sc->sim_1),
 216             CAM_TARGET_WILDCARD,
 217             CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 218                 xpt_bus_deregister(cam_sim_path(sc->sim_1));
 219                 cam_sim_free(sc->sim_1, TRUE);
 220                 mtx_unlock(&sc->sim_lock);
 221                 return (ENXIO);
 222         }
 223         mtx_unlock(&sc->sim_lock);
 224
 225 #if (__FreeBSD_version <= 704000)
 226         if (mrsas_bus_scan(sc)) {
 227                 device_printf(sc->mrsas_dev, "Error in bus scan.\n");
 228                 return (1);
 229         }
 230 #endif
 231         return (0);
 232 }
 233
 234 /*
 235  * mrsas_cam_detach:    De-allocates and teardown CAM
 236  * input:                               Adapter instance soft state
 237  *
 238  * De-registers and frees the paths and SIMs.
 239  */
 240 void
 241 mrsas_cam_detach(struct mrsas_softc *sc)
 242 {
 243         if (sc->ev_tq != NULL)
 244                 taskqueue_free(sc->ev_tq);
 245         mtx_lock(&sc->sim_lock);
 246         if (sc->path_0)
 247                 xpt_free_path(sc->path_0);
 248         if (sc->sim_0) {
 249                 xpt_bus_deregister(cam_sim_path(sc->sim_0));
 250                 cam_sim_free(sc->sim_0, FALSE);
 251         }
 252         if (sc->path_1)
 253                 xpt_free_path(sc->path_1);
 254         if (sc->sim_1) {
 255                 xpt_bus_deregister(cam_sim_path(sc->sim_1));
 256                 cam_sim_free(sc->sim_1, TRUE);
 257         }
 258         mtx_unlock(&sc->sim_lock);
 259 }
 260
 261 /*
 262  * mrsas_action:        SIM callback entry point
 263  * input:                       pointer to SIM pointer to CAM Control Block
 264  *
 265  * This function processes CAM subsystem requests. The type of request is stored
 266  * in ccb->ccb_h.func_code.  The preprocessor #ifdef is necessary because
 267  * ccb->cpi.maxio is not supported for FreeBSD version 7.4 or earlier.
 268  */
 269 static void
 270 mrsas_action(struct cam_sim *sim, union ccb *ccb)
 271 {
 272         struct mrsas_softc *sc = (struct mrsas_softc *)cam_sim_softc(sim);
 273         struct ccb_hdr *ccb_h = &(ccb->ccb_h);
 274         u_int32_t device_id;
 275
 276         /*
 277      * Check if the system going down
 278      * or the adapter is in unrecoverable critical error
 279      */
 280     if (sc->remove_in_progress ||
 281         (sc->adprecovery == MRSAS_HW_CRITICAL_ERROR)) {
 282         ccb->ccb_h.status |= CAM_DEV_NOT_THERE;
 283         xpt_done(ccb);
 284         return;
 285     }
 286
 287         switch (ccb->ccb_h.func_code) {
 288         case XPT_SCSI_IO:
 289                 {
 290                         device_id = ccb_h->target_id;
 291
 292                         /*
 293                          * bus 0 is LD, bus 1 is for system-PD
 294                          */
 295                         if (cam_sim_bus(sim) == 1 &&
 296                             sc->pd_list[device_id].driveState != MR_PD_STATE_SYSTEM) {
 297                                 ccb->ccb_h.status |= CAM_DEV_NOT_THERE;
 298                                 xpt_done(ccb);
 299                         } else {
 300                                 if (mrsas_startio(sc, sim, ccb)) {
 301                                         ccb->ccb_h.status |= CAM_REQ_INVALID;
 302                                         xpt_done(ccb);
 303                                 }
 304                         }
 305                         break;
 306                 }
 307         case XPT_ABORT:
 308                 {
 309                         ccb->ccb_h.status = CAM_UA_ABORT;
 310                         xpt_done(ccb);
 311                         break;
 312                 }
 313         case XPT_RESET_BUS:
 314                 {
 315                         xpt_done(ccb);
 316                         break;
 317                 }
 318         case XPT_GET_TRAN_SETTINGS:
 319                 {
 320                         ccb->cts.protocol = PROTO_SCSI;
 321                         ccb->cts.protocol_version = SCSI_REV_2;
 322                         ccb->cts.transport = XPORT_SPI;
 323                         ccb->cts.transport_version = 2;
 324                         ccb->cts.xport_specific.spi.valid = CTS_SPI_VALID_DISC;
 325                         ccb->cts.xport_specific.spi.flags = CTS_SPI_FLAGS_DISC_ENB;
 326                         ccb->cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ;
 327                         ccb->cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB;
 328                         ccb->ccb_h.status = CAM_REQ_CMP;
 329                         xpt_done(ccb);
 330                         break;
 331                 }
 332         case XPT_SET_TRAN_SETTINGS:
 333                 {
 334                         ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
 335                         xpt_done(ccb);
 336                         break;
 337                 }
 338         case XPT_CALC_GEOMETRY:
 339                 {
 340                         cam_calc_geometry(&ccb->ccg, 1);
 341                         xpt_done(ccb);
 342                         break;
 343                 }
 344         case XPT_PATH_INQ:
 345                 {
 346                         ccb->cpi.version_num = 1;
 347                         ccb->cpi.hba_inquiry = 0;
 348                         ccb->cpi.target_sprt = 0;
 349 #if (__FreeBSD_version >= 902001)
 350                         ccb->cpi.hba_misc = PIM_UNMAPPED;
 351 #else
 352                         ccb->cpi.hba_misc = 0;
 353 #endif
 354                         ccb->cpi.hba_eng_cnt = 0;
 355                         ccb->cpi.max_lun = MRSAS_SCSI_MAX_LUNS;
 356                         ccb->cpi.unit_number = cam_sim_unit(sim);
 357                         ccb->cpi.bus_id = cam_sim_bus(sim);
 358                         ccb->cpi.initiator_id = MRSAS_SCSI_INITIATOR_ID;
 359                         ccb->cpi.base_transfer_speed = 150000;
 360                         strlcpy(ccb->cpi.sim_vid, "FreeBSD", SIM_IDLEN);
 361                         strlcpy(ccb->cpi.hba_vid, "AVAGO", HBA_IDLEN);
 362                         strlcpy(ccb->cpi.dev_name, cam_sim_name(sim), DEV_IDLEN);
 363                         ccb->cpi.transport = XPORT_SPI;
 364                         ccb->cpi.transport_version = 2;
 365                         ccb->cpi.protocol = PROTO_SCSI;
 366                         ccb->cpi.protocol_version = SCSI_REV_2;
 367                         if (ccb->cpi.bus_id == 0)
 368                                 ccb->cpi.max_target = MRSAS_MAX_PD - 1;
 369                         else
 370                                 ccb->cpi.max_target = MRSAS_MAX_LD_IDS - 1;
 371 #if (__FreeBSD_version > 704000)
 372                         ccb->cpi.maxio = sc->max_num_sge * MRSAS_PAGE_SIZE;
 373 #endif
 374                         ccb->ccb_h.status = CAM_REQ_CMP;
 375                         xpt_done(ccb);
 376                         break;
 377                 }
 378         default:
 379                 {
 380                         ccb->ccb_h.status = CAM_REQ_INVALID;
 381                         xpt_done(ccb);
 382                         break;
 383                 }
 384         }
 385 }
 386
 387 /*
 388  * mrsas_scsiio_timeout:        Callback function for IO timed out
 389  * input:                                       mpt command context
 390  *
 391  * This function will execute after timeout value provided by ccb header from
 392  * CAM layer, if timer expires. Driver will run timer for all DCDM and LDIO
 393  * coming from CAM layer. This function is callback function for IO timeout
 394  * and it runs in no-sleep context. Set do_timedout_reset in Adapter context
 395  * so that it will execute OCR/Kill adpter from ocr_thread context.
 396  */
 397 static void
 398 mrsas_scsiio_timeout(void *data)
 399 {
 400         struct mrsas_mpt_cmd *cmd;
 401         struct mrsas_softc *sc;
 402         u_int32_t target_id;
 403
 404         if (!data)
 405                 return;
 406
 407         cmd = (struct mrsas_mpt_cmd *)data;
 408         sc = cmd->sc;
 409
 410         if (cmd->ccb_ptr == NULL) {
 411                 printf("command timeout with NULL ccb\n");
 412                 return;
 413         }
 414
 415         /*
 416          * Below callout is dummy entry so that it will be cancelled from
 417          * mrsas_cmd_done(). Now Controller will go to OCR/Kill Adapter based
 418          * on OCR enable/disable property of Controller from ocr_thread
 419          * context.
 420          */
 421 #if (__FreeBSD_version >= 1000510)
 422         callout_reset_sbt(&cmd->cm_callout, SBT_1S * 180, 0,
 423             mrsas_scsiio_timeout, cmd, 0);
 424 #else
 425         callout_reset(&cmd->cm_callout, (180000 * hz) / 1000,
 426             mrsas_scsiio_timeout, cmd);
 427 #endif
 428
 429         if (cmd->ccb_ptr->cpi.bus_id == 0)
 430                 target_id = cmd->ccb_ptr->ccb_h.target_id;
 431         else
 432                 target_id = (cmd->ccb_ptr->ccb_h.target_id + (MRSAS_MAX_PD - 1));
 433
 434         /* Save the cmd to be processed for TM, if it is not there in the array */
 435         if (sc->target_reset_pool[target_id] == NULL) {
 436                 sc->target_reset_pool[target_id] = cmd;
 437                 mrsas_atomic_inc(&sc->target_reset_outstanding);
 438         }
 439
 440         return;
 441 }
 442
 443 /*
 444  * mrsas_startio:       SCSI IO entry point
 445  * input:                       Adapter instance soft state
 446  *                                      pointer to CAM Control Block
 447  *
 448  * This function is the SCSI IO entry point and it initiates IO processing. It
 449  * copies the IO and depending if the IO is read/write or inquiry, it would
 450  * call mrsas_build_ldio() or mrsas_build_dcdb(), respectively.  It returns 0
 451  * if the command is sent to firmware successfully, otherwise it returns 1.
 452  */
 453 static int32_t
 454 mrsas_startio(struct mrsas_softc *sc, struct cam_sim *sim,
 455     union ccb *ccb)
 456 {
 457         struct mrsas_mpt_cmd *cmd, *r1_cmd = NULL;
 458         struct ccb_hdr *ccb_h = &(ccb->ccb_h);
 459         struct ccb_scsiio *csio = &(ccb->csio);
 460         MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc;
 461         u_int8_t cmd_type;
 462
 463         if ((csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE &&
 464                 (!sc->fw_sync_cache_support)) {
 465                 ccb->ccb_h.status = CAM_REQ_CMP;
 466                 xpt_done(ccb);
 467                 return (0);
 468         }
 469         ccb_h->status |= CAM_SIM_QUEUED;
 470
 471         if (mrsas_atomic_inc_return(&sc->fw_outstanding) > sc->max_scsi_cmds) {
 472                 ccb_h->status |= CAM_REQUEUE_REQ;
 473                 xpt_done(ccb);
 474                 mrsas_atomic_dec(&sc->fw_outstanding);
 475                 return (0);
 476         }
 477
 478         cmd = mrsas_get_mpt_cmd(sc);
 479
 480         if (!cmd) {
 481                 ccb_h->status |= CAM_REQUEUE_REQ;
 482                 xpt_done(ccb);
 483                 mrsas_atomic_dec(&sc->fw_outstanding);
 484                 return (0);
 485         }
 486
 487         if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 488                 if (ccb_h->flags & CAM_DIR_IN)
 489                         cmd->flags |= MRSAS_DIR_IN;
 490                 if (ccb_h->flags & CAM_DIR_OUT)
 491                         cmd->flags |= MRSAS_DIR_OUT;
 492         } else
 493                 cmd->flags = MRSAS_DIR_NONE;    /* no data */
 494
 495 /* For FreeBSD 9.2 and higher */
 496 #if (__FreeBSD_version >= 902001)
 497         /*
 498          * XXX We don't yet support physical addresses here.
 499          */
 500         switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) {
 501         case CAM_DATA_PADDR:
 502         case CAM_DATA_SG_PADDR:
 503                 device_printf(sc->mrsas_dev, "%s: physical addresses not supported\n",
 504                     __func__);
 505                 mrsas_release_mpt_cmd(cmd);
 506                 ccb_h->status = CAM_REQ_INVALID;
 507                 ccb_h->status &= ~CAM_SIM_QUEUED;
 508                 goto done;
 509         case CAM_DATA_SG:
 510                 device_printf(sc->mrsas_dev, "%s: scatter gather is not supported\n",
 511                     __func__);
 512                 mrsas_release_mpt_cmd(cmd);
 513                 ccb_h->status = CAM_REQ_INVALID;
 514                 goto done;
 515         case CAM_DATA_VADDR:
 516                 if (csio->dxfer_len > (sc->max_num_sge * MRSAS_PAGE_SIZE)) {
 517                         mrsas_release_mpt_cmd(cmd);
 518                         ccb_h->status = CAM_REQ_TOO_BIG;
 519                         goto done;
 520                 }
 521                 cmd->length = csio->dxfer_len;
 522                 if (cmd->length)
 523                         cmd->data = csio->data_ptr;
 524                 break;
 525         case CAM_DATA_BIO:
 526                 if (csio->dxfer_len > (sc->max_num_sge * MRSAS_PAGE_SIZE)) {
 527                         mrsas_release_mpt_cmd(cmd);
 528                         ccb_h->status = CAM_REQ_TOO_BIG;
 529                         goto done;
 530                 }
 531                 cmd->length = csio->dxfer_len;
 532                 if (cmd->length)
 533                         cmd->data = csio->data_ptr;
 534                 break;
 535         default:
 536                 ccb->ccb_h.status = CAM_REQ_INVALID;
 537                 goto done;
 538         }
 539 #else
 540         if (!(ccb_h->flags & CAM_DATA_PHYS)) {  /* Virtual data address */
 541                 if (!(ccb_h->flags & CAM_SCATTER_VALID)) {
 542                         if (csio->dxfer_len > (sc->max_num_sge * MRSAS_PAGE_SIZE)) {
 543                                 mrsas_release_mpt_cmd(cmd);
 544                                 ccb_h->status = CAM_REQ_TOO_BIG;
 545                                 goto done;
 546                         }
 547                         cmd->length = csio->dxfer_len;
 548                         if (cmd->length)
 549                                 cmd->data = csio->data_ptr;
 550                 } else {
 551                         mrsas_release_mpt_cmd(cmd);
 552                         ccb_h->status = CAM_REQ_INVALID;
 553                         goto done;
 554                 }
 555         } else {                        /* Data addresses are physical. */
 556                 mrsas_release_mpt_cmd(cmd);
 557                 ccb_h->status = CAM_REQ_INVALID;
 558                 ccb_h->status &= ~CAM_SIM_QUEUED;
 559                 goto done;
 560         }
 561 #endif
 562         /* save ccb ptr */
 563         cmd->ccb_ptr = ccb;
 564
 565         req_desc = mrsas_get_request_desc(sc, (cmd->index) - 1);
 566         if (!req_desc) {
 567                 device_printf(sc->mrsas_dev, "Cannot get request_descriptor.\n");
 568                 return (FAIL);
 569         }
 570         memset(req_desc, 0, sizeof(MRSAS_REQUEST_DESCRIPTOR_UNION));
 571         cmd->request_desc = req_desc;
 572
 573         if (ccb_h->flags & CAM_CDB_POINTER)
 574                 bcopy(csio->cdb_io.cdb_ptr, cmd->io_request->CDB.CDB32, csio->cdb_len);
 575         else
 576                 bcopy(csio->cdb_io.cdb_bytes, cmd->io_request->CDB.CDB32, csio->cdb_len);
 577         mtx_lock(&sc->raidmap_lock);
 578
 579         /* Check for IO type READ-WRITE targeted for Logical Volume */
 580         cmd_type = mrsas_find_io_type(sim, ccb);
 581         switch (cmd_type) {
 582         case READ_WRITE_LDIO:
 583                 /* Build READ-WRITE IO for Logical Volume  */
 584                 if (mrsas_build_ldio_rw(sc, cmd, ccb)) {
 585                         device_printf(sc->mrsas_dev, "Build RW LDIO failed.\n");
 586                         mtx_unlock(&sc->raidmap_lock);
 587                         mrsas_release_mpt_cmd(cmd);
 588                         return (1);
 589                 }
 590                 break;
 591         case NON_READ_WRITE_LDIO:
 592                 /* Build NON READ-WRITE IO for Logical Volume  */
 593                 if (mrsas_build_ldio_nonrw(sc, cmd, ccb)) {
 594                         device_printf(sc->mrsas_dev, "Build NON-RW LDIO failed.\n");
 595                         mtx_unlock(&sc->raidmap_lock);
 596                         mrsas_release_mpt_cmd(cmd);
 597                         return (1);
 598                 }
 599                 break;
 600         case READ_WRITE_SYSPDIO:
 601         case NON_READ_WRITE_SYSPDIO:
 602                 if (sc->secure_jbod_support &&
 603                     (cmd_type == NON_READ_WRITE_SYSPDIO)) {
 604                         /* Build NON-RW IO for JBOD */
 605                         if (mrsas_build_syspdio(sc, cmd, ccb, sim, 0)) {
 606                                 device_printf(sc->mrsas_dev,
 607                                     "Build SYSPDIO failed.\n");
 608                                 mtx_unlock(&sc->raidmap_lock);
 609                                 mrsas_release_mpt_cmd(cmd);
 610                                 return (1);
 611                         }
 612                 } else {
 613                         /* Build RW IO for JBOD */
 614                         if (mrsas_build_syspdio(sc, cmd, ccb, sim, 1)) {
 615                                 device_printf(sc->mrsas_dev,
 616                                     "Build SYSPDIO failed.\n");
 617                                 mtx_unlock(&sc->raidmap_lock);
 618                                 mrsas_release_mpt_cmd(cmd);
 619                                 return (1);
 620                         }
 621                 }
 622         }
 623         mtx_unlock(&sc->raidmap_lock);
 624
 625         if (cmd->flags == MRSAS_DIR_IN) /* from device */
 626                 cmd->io_request->Control |= MPI2_SCSIIO_CONTROL_READ;
 627         else if (cmd->flags == MRSAS_DIR_OUT)   /* to device */
 628                 cmd->io_request->Control |= MPI2_SCSIIO_CONTROL_WRITE;
 629
 630         cmd->io_request->SGLFlags = MPI2_SGE_FLAGS_64_BIT_ADDRESSING;
 631         cmd->io_request->SGLOffset0 = offsetof(MRSAS_RAID_SCSI_IO_REQUEST, SGL) / 4;
 632         cmd->io_request->SenseBufferLowAddress = cmd->sense_phys_addr;
 633         cmd->io_request->SenseBufferLength = MRSAS_SCSI_SENSE_BUFFERSIZE;
 634
 635         req_desc = cmd->request_desc;
 636         req_desc->SCSIIO.SMID = cmd->index;
 637
 638         /*
 639          * Start timer for IO timeout. Default timeout value is 90 second.
 640          */
 641         cmd->callout_owner = true;
 642 #if (__FreeBSD_version >= 1000510)
 643         callout_reset_sbt(&cmd->cm_callout, SBT_1S * 180, 0,
 644             mrsas_scsiio_timeout, cmd, 0);
 645 #else
 646         callout_reset(&cmd->cm_callout, (180000 * hz) / 1000,
 647             mrsas_scsiio_timeout, cmd);
 648 #endif
 649
 650         if (mrsas_atomic_read(&sc->fw_outstanding) > sc->io_cmds_highwater)
 651                 sc->io_cmds_highwater++;
 652
 653         /*
 654          *  if it is raid 1/10 fp write capable.
 655          *  try to get second command from pool and construct it.
 656          *  From FW, it has confirmed that lba values of two PDs corresponds to
 657          *  single R1/10 LD are always same
 658          *
 659          */
 660         /*
 661          * driver side count always should be less than max_fw_cmds to get
 662          * new command
 663          */
 664         if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
 665                 mrsas_prepare_secondRaid1_IO(sc, cmd);
 666                 mrsas_fire_cmd(sc, req_desc->addr.u.low,
 667                         req_desc->addr.u.high);
 668                 r1_cmd = cmd->peer_cmd;
 669                 mrsas_fire_cmd(sc, r1_cmd->request_desc->addr.u.low,
 670                                 r1_cmd->request_desc->addr.u.high);
 671         } else {
 672                 mrsas_fire_cmd(sc, req_desc->addr.u.low,
 673                         req_desc->addr.u.high);
 674         }
 675
 676         return (0);
 677
 678 done:
 679         xpt_done(ccb);
 680         mrsas_atomic_dec(&sc->fw_outstanding);
 681         return (0);
 682 }
 683
 684 /*
 685  * mrsas_find_io_type:  Determines if IO is read/write or inquiry
 686  * input:                       pointer to CAM Control Block
 687  *
 688  * This function determines if the IO is read/write or inquiry.  It returns a 1
 689  * if the IO is read/write and 0 if it is inquiry.
 690  */
 691 int
 692 mrsas_find_io_type(struct cam_sim *sim, union ccb *ccb)
 693 {
 694         struct ccb_scsiio *csio = &(ccb->csio);
 695
 696         switch (csio->cdb_io.cdb_bytes[0]) {
 697         case READ_10:
 698         case WRITE_10:
 699         case READ_12:
 700         case WRITE_12:
 701         case READ_6:
 702         case WRITE_6:
 703         case READ_16:
 704         case WRITE_16:
 705                 return (cam_sim_bus(sim) ?
 706                     READ_WRITE_SYSPDIO : READ_WRITE_LDIO);
 707         default:
 708                 return (cam_sim_bus(sim) ?
 709                     NON_READ_WRITE_SYSPDIO : NON_READ_WRITE_LDIO);
 710         }
 711 }
 712
 713 /*
 714  * mrsas_get_mpt_cmd:   Get a cmd from free command pool
 715  * input:                               Adapter instance soft state
 716  *
 717  * This function removes an MPT command from the command free list and
 718  * initializes it.
 719  */
 720 struct mrsas_mpt_cmd *
 721 mrsas_get_mpt_cmd(struct mrsas_softc *sc)
 722 {
 723         struct mrsas_mpt_cmd *cmd = NULL;
 724
 725         mtx_lock(&sc->mpt_cmd_pool_lock);
 726         if (!TAILQ_EMPTY(&sc->mrsas_mpt_cmd_list_head)) {
 727                 cmd = TAILQ_FIRST(&sc->mrsas_mpt_cmd_list_head);
 728                 TAILQ_REMOVE(&sc->mrsas_mpt_cmd_list_head, cmd, next);
 729         } else {
 730                 goto out;
 731         }
 732
 733         memset((uint8_t *)cmd->io_request, 0, MRSAS_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
 734         cmd->data = NULL;
 735         cmd->length = 0;
 736         cmd->flags = 0;
 737         cmd->error_code = 0;
 738         cmd->load_balance = 0;
 739         cmd->ccb_ptr = NULL;
 740 out:
 741         mtx_unlock(&sc->mpt_cmd_pool_lock);
 742         return cmd;
 743 }
 744
 745 /*
 746  * mrsas_release_mpt_cmd:       Return a cmd to free command pool
 747  * input:                                       Command packet for return to free command pool
 748  *
 749  * This function returns an MPT command to the free command list.
 750  */
 751 void
 752 mrsas_release_mpt_cmd(struct mrsas_mpt_cmd *cmd)
 753 {
 754         struct mrsas_softc *sc = cmd->sc;
 755
 756         mtx_lock(&sc->mpt_cmd_pool_lock);
 757         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 758         cmd->sync_cmd_idx = (u_int32_t)MRSAS_ULONG_MAX;
 759         cmd->peer_cmd = NULL;
 760         cmd->cmd_completed = 0;
 761         memset((uint8_t *)cmd->io_request, 0,
 762                 sizeof(MRSAS_RAID_SCSI_IO_REQUEST));
 763         TAILQ_INSERT_HEAD(&(sc->mrsas_mpt_cmd_list_head), cmd, next);
 764         mtx_unlock(&sc->mpt_cmd_pool_lock);
 765
 766         return;
 767 }
 768
 769 /*
 770  * mrsas_get_request_desc:      Get request descriptor from array
 771  * input:                                       Adapter instance soft state
 772  *                                                      SMID index
 773  *
 774  * This function returns a pointer to the request descriptor.
 775  */
 776 MRSAS_REQUEST_DESCRIPTOR_UNION *
 777 mrsas_get_request_desc(struct mrsas_softc *sc, u_int16_t index)
 778 {
 779         u_int8_t *p;
 780
 781         KASSERT(index < sc->max_fw_cmds, ("req_desc is out of range"));
 782         p = sc->req_desc + sizeof(MRSAS_REQUEST_DESCRIPTOR_UNION) * index;
 783
 784         return (MRSAS_REQUEST_DESCRIPTOR_UNION *) p;
 785 }
 786
 787 /* mrsas_prepare_secondRaid1_IO
 788  * It prepares the raid 1 second IO
 789  */
 790 void
 791 mrsas_prepare_secondRaid1_IO(struct mrsas_softc *sc,
 792     struct mrsas_mpt_cmd *cmd)
 793 {
 794         MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
 795         struct mrsas_mpt_cmd *r1_cmd;
 796
 797         r1_cmd = cmd->peer_cmd;
 798         req_desc = cmd->request_desc;
 799
 800         /*
 801          * copy the io request frame as well as 8 SGEs data for r1
 802          * command
 803          */
 804         memcpy(r1_cmd->io_request, cmd->io_request,
 805             (sizeof(MRSAS_RAID_SCSI_IO_REQUEST)));
 806         memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL,
 807             (sc->max_sge_in_main_msg * sizeof(MPI2_SGE_IO_UNION)));
 808
 809         /* sense buffer is different for r1 command */
 810         r1_cmd->io_request->SenseBufferLowAddress = r1_cmd->sense_phys_addr;
 811         r1_cmd->ccb_ptr = cmd->ccb_ptr;
 812
 813         req_desc2 = mrsas_get_request_desc(sc, r1_cmd->index - 1);
 814         req_desc2->addr.Words = 0;
 815         r1_cmd->request_desc = req_desc2;
 816         req_desc2->SCSIIO.SMID = r1_cmd->index;
 817         req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
 818         r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
 819         r1_cmd->r1_alt_dev_handle =  cmd->io_request->DevHandle;
 820         r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
 821         cmd->io_request->RaidContext.raid_context_g35.smid.peerSMID =
 822             r1_cmd->index;
 823         r1_cmd->io_request->RaidContext.raid_context_g35.smid.peerSMID =
 824                 cmd->index;
 825         /*
 826          * MSIxIndex of both commands request descriptors
 827          * should be same
 828          */
 829         r1_cmd->request_desc->SCSIIO.MSIxIndex = cmd->request_desc->SCSIIO.MSIxIndex;
 830         /* span arm is different for r1 cmd */
 831         r1_cmd->io_request->RaidContext.raid_context_g35.spanArm =
 832             cmd->io_request->RaidContext.raid_context_g35.spanArm + 1;
 833
 834 }
 835
 836 /*
 837  * mrsas_build_ldio_rw: Builds an LDIO command
 838  * input:                               Adapter instance soft state
 839  *                                              Pointer to command packet
 840  *                                              Pointer to CCB
 841  *
 842  * This function builds the LDIO command packet.  It returns 0 if the command is
 843  * built successfully, otherwise it returns a 1.
 844  */
 845 int
 846 mrsas_build_ldio_rw(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
 847     union ccb *ccb)
 848 {
 849         struct ccb_hdr *ccb_h = &(ccb->ccb_h);
 850         struct ccb_scsiio *csio = &(ccb->csio);
 851         u_int32_t device_id;
 852         MRSAS_RAID_SCSI_IO_REQUEST *io_request;
 853
 854         device_id = ccb_h->target_id;
 855
 856         io_request = cmd->io_request;
 857         io_request->RaidContext.raid_context.VirtualDiskTgtId = device_id;
 858         io_request->RaidContext.raid_context.status = 0;
 859         io_request->RaidContext.raid_context.exStatus = 0;
 860
 861         /* just the cdb len, other flags zero, and ORed-in later for FP */
 862         io_request->IoFlags = csio->cdb_len;
 863
 864         if (mrsas_setup_io(sc, cmd, ccb, device_id, io_request) != SUCCESS)
 865                 device_printf(sc->mrsas_dev, "Build ldio or fpio error\n");
 866
 867         io_request->DataLength = cmd->length;
 868
 869         if (mrsas_map_request(sc, cmd, ccb) == SUCCESS) {
 870                 if (cmd->sge_count > sc->max_num_sge) {
 871                         device_printf(sc->mrsas_dev, "Error: sge_count (0x%x) exceeds"
 872                             "max (0x%x) allowed\n", cmd->sge_count, sc->max_num_sge);
 873                         return (FAIL);
 874                 }
 875                 if (sc->is_ventura || sc->is_aero)
 876                         io_request->RaidContext.raid_context_g35.numSGE = cmd->sge_count;
 877                 else {
 878                         /*
 879                          * numSGE store lower 8 bit of sge_count. numSGEExt store
 880                          * higher 8 bit of sge_count
 881                          */
 882                         io_request->RaidContext.raid_context.numSGE = cmd->sge_count;
 883                         io_request->RaidContext.raid_context.numSGEExt = (uint8_t)(cmd->sge_count >> 8);
 884                 }
 885
 886         } else {
 887                 device_printf(sc->mrsas_dev, "Data map/load failed.\n");
 888                 return (FAIL);
 889         }
 890         return (0);
 891 }
 892
 893 /* stream detection on read and and write IOs */
 894 static void
 895 mrsas_stream_detect(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
 896     struct IO_REQUEST_INFO *io_info)
 897 {
 898         u_int32_t device_id = io_info->ldTgtId;
 899         LD_STREAM_DETECT *current_ld_SD = sc->streamDetectByLD[device_id];
 900         u_int32_t *track_stream = &current_ld_SD->mruBitMap;
 901         u_int32_t streamNum, shiftedValues, unshiftedValues;
 902         u_int32_t indexValueMask, shiftedValuesMask;
 903         int i;
 904         boolean_t isReadAhead = false;
 905         STREAM_DETECT *current_SD;
 906
 907         /* find possible stream */
 908         for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
 909                 streamNum = (*track_stream >> (i * BITS_PER_INDEX_STREAM)) &
 910                                 STREAM_MASK;
 911                 current_SD = &current_ld_SD->streamTrack[streamNum];
 912                 /*
 913                  * if we found a stream, update the raid context and
 914                  * also update the mruBitMap
 915                  */
 916                 if (current_SD->nextSeqLBA &&
 917                     io_info->ldStartBlock >= current_SD->nextSeqLBA &&
 918                     (io_info->ldStartBlock <= (current_SD->nextSeqLBA+32)) &&
 919                     (current_SD->isRead == io_info->isRead)) {
 920                         if (io_info->ldStartBlock != current_SD->nextSeqLBA &&
 921                             (!io_info->isRead || !isReadAhead)) {
 922                                 /*
 923                                  * Once the API availible we need to change this.
 924                                  * At this point we are not allowing any gap
 925                                  */
 926                                 continue;
 927                         }
 928                         cmd->io_request->RaidContext.raid_context_g35.streamDetected = TRUE;
 929                         current_SD->nextSeqLBA = io_info->ldStartBlock + io_info->numBlocks;
 930                         /*
 931                          * update the mruBitMap LRU
 932                          */
 933                         shiftedValuesMask = (1 << i * BITS_PER_INDEX_STREAM) - 1 ;
 934                         shiftedValues = ((*track_stream & shiftedValuesMask) <<
 935                             BITS_PER_INDEX_STREAM);
 936                         indexValueMask = STREAM_MASK << i * BITS_PER_INDEX_STREAM;
 937                         unshiftedValues = (*track_stream) &
 938                             (~(shiftedValuesMask | indexValueMask));
 939                         *track_stream =
 940                             (unshiftedValues | shiftedValues | streamNum);
 941                         return;
 942                 }
 943         }
 944         /*
 945          * if we did not find any stream, create a new one from the least recently used
 946          */
 947         streamNum = (*track_stream >>
 948             ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) & STREAM_MASK;
 949         current_SD = &current_ld_SD->streamTrack[streamNum];
 950         current_SD->isRead = io_info->isRead;
 951         current_SD->nextSeqLBA = io_info->ldStartBlock + io_info->numBlocks;
 952         *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | streamNum);
 953         return;
 954 }
 955
 956 /*
 957  * mrsas_setup_io:      Set up data including Fast Path I/O
 958  * input:                       Adapter instance soft state
 959  *                                      Pointer to command packet
 960  *                                      Pointer to CCB
 961  *
 962  * This function builds the DCDB inquiry command.  It returns 0 if the command
 963  * is built successfully, otherwise it returns a 1.
 964  */
 965 int
 966 mrsas_setup_io(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
 967     union ccb *ccb, u_int32_t device_id,
 968     MRSAS_RAID_SCSI_IO_REQUEST * io_request)
 969 {
 970         struct ccb_hdr *ccb_h = &(ccb->ccb_h);
 971         struct ccb_scsiio *csio = &(ccb->csio);
 972         struct IO_REQUEST_INFO io_info;
 973         MR_DRV_RAID_MAP_ALL *map_ptr;
 974         struct mrsas_mpt_cmd *r1_cmd = NULL;
 975
 976         MR_LD_RAID *raid;
 977         u_int8_t fp_possible;
 978         u_int32_t start_lba_hi, start_lba_lo, ld_block_size, ld;
 979         u_int32_t datalength = 0;
 980
 981         io_request->RaidContext.raid_context.VirtualDiskTgtId = device_id;
 982
 983         start_lba_lo = 0;
 984         start_lba_hi = 0;
 985         fp_possible = 0;
 986
 987         /*
 988          * READ_6 (0x08) or WRITE_6 (0x0A) cdb
 989          */
 990         if (csio->cdb_len == 6) {
 991                 datalength = (u_int32_t)csio->cdb_io.cdb_bytes[4];
 992                 start_lba_lo = ((u_int32_t)csio->cdb_io.cdb_bytes[1] << 16) |
 993                     ((u_int32_t)csio->cdb_io.cdb_bytes[2] << 8) |
 994                     (u_int32_t)csio->cdb_io.cdb_bytes[3];
 995                 start_lba_lo &= 0x1FFFFF;
 996         }
 997         /*
 998          * READ_10 (0x28) or WRITE_6 (0x2A) cdb
 999          */
1000         else if (csio->cdb_len == 10) {
1001                 datalength = (u_int32_t)csio->cdb_io.cdb_bytes[8] |
1002                     ((u_int32_t)csio->cdb_io.cdb_bytes[7] << 8);
1003                 start_lba_lo = ((u_int32_t)csio->cdb_io.cdb_bytes[2] << 24) |
1004                     ((u_int32_t)csio->cdb_io.cdb_bytes[3] << 16) |
1005                     (u_int32_t)csio->cdb_io.cdb_bytes[4] << 8 |
1006                     ((u_int32_t)csio->cdb_io.cdb_bytes[5]);
1007         }
1008         /*
1009          * READ_12 (0xA8) or WRITE_12 (0xAA) cdb
1010          */
1011         else if (csio->cdb_len == 12) {
1012                 datalength = (u_int32_t)csio->cdb_io.cdb_bytes[6] << 24 |
1013                     ((u_int32_t)csio->cdb_io.cdb_bytes[7] << 16) |
1014                     ((u_int32_t)csio->cdb_io.cdb_bytes[8] << 8) |
1015                     ((u_int32_t)csio->cdb_io.cdb_bytes[9]);
1016                 start_lba_lo = ((u_int32_t)csio->cdb_io.cdb_bytes[2] << 24) |
1017                     ((u_int32_t)csio->cdb_io.cdb_bytes[3] << 16) |
1018                     (u_int32_t)csio->cdb_io.cdb_bytes[4] << 8 |
1019                     ((u_int32_t)csio->cdb_io.cdb_bytes[5]);
1020         }
1021         /*
1022          * READ_16 (0x88) or WRITE_16 (0xx8A) cdb
1023          */
1024         else if (csio->cdb_len == 16) {
1025                 datalength = (u_int32_t)csio->cdb_io.cdb_bytes[10] << 24 |
1026                     ((u_int32_t)csio->cdb_io.cdb_bytes[11] << 16) |
1027                     ((u_int32_t)csio->cdb_io.cdb_bytes[12] << 8) |
1028                     ((u_int32_t)csio->cdb_io.cdb_bytes[13]);
1029                 start_lba_lo = ((u_int32_t)csio->cdb_io.cdb_bytes[6] << 24) |
1030                     ((u_int32_t)csio->cdb_io.cdb_bytes[7] << 16) |
1031                     (u_int32_t)csio->cdb_io.cdb_bytes[8] << 8 |
1032                     ((u_int32_t)csio->cdb_io.cdb_bytes[9]);
1033                 start_lba_hi = ((u_int32_t)csio->cdb_io.cdb_bytes[2] << 24) |
1034                     ((u_int32_t)csio->cdb_io.cdb_bytes[3] << 16) |
1035                     (u_int32_t)csio->cdb_io.cdb_bytes[4] << 8 |
1036                     ((u_int32_t)csio->cdb_io.cdb_bytes[5]);
1037         }
1038         memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
1039         io_info.ldStartBlock = ((u_int64_t)start_lba_hi << 32) | start_lba_lo;
1040         io_info.numBlocks = datalength;
1041         io_info.ldTgtId = device_id;
1042         io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
1043
1044         io_request->DataLength = cmd->length;
1045
1046         switch (ccb_h->flags & CAM_DIR_MASK) {
1047         case CAM_DIR_IN:
1048                 io_info.isRead = 1;
1049                 break;
1050         case CAM_DIR_OUT:
1051                 io_info.isRead = 0;
1052                 break;
1053         case CAM_DIR_NONE:
1054         default:
1055                 mrsas_dprint(sc, MRSAS_TRACE, "From %s : DMA Flag is %d \n", __func__, ccb_h->flags & CAM_DIR_MASK);
1056                 break;
1057         }
1058
1059         map_ptr = sc->ld_drv_map[(sc->map_id & 1)];
1060         ld_block_size = MR_LdBlockSizeGet(device_id, map_ptr);
1061
1062         ld = MR_TargetIdToLdGet(device_id, map_ptr);
1063         if ((ld >= MAX_LOGICAL_DRIVES_EXT) || (!sc->fast_path_io)) {
1064                 io_request->RaidContext.raid_context.regLockFlags = 0;
1065                 fp_possible = 0;
1066         } else {
1067                 if (MR_BuildRaidContext(sc, &io_info, &io_request->RaidContext.raid_context, map_ptr))
1068                         fp_possible = io_info.fpOkForIo;
1069         }
1070
1071         raid = MR_LdRaidGet(ld, map_ptr);
1072         /* Store the TM capability value in cmd */
1073         cmd->tmCapable = raid->capability.tmCapable;
1074
1075         cmd->request_desc->SCSIIO.MSIxIndex =
1076             sc->msix_vectors ? smp_processor_id() % sc->msix_vectors : 0;
1077
1078         if (sc->is_ventura || sc->is_aero) {
1079                 if (sc->streamDetectByLD) {
1080                         mtx_lock(&sc->stream_lock);
1081                         mrsas_stream_detect(sc, cmd, &io_info);
1082                         mtx_unlock(&sc->stream_lock);
1083                         /* In ventura if stream detected for a read and
1084                          * it is read ahead capable make this IO as LDIO */
1085                         if (io_request->RaidContext.raid_context_g35.streamDetected &&
1086                                         io_info.isRead && io_info.raCapable)
1087                                 fp_possible = FALSE;
1088                 }
1089
1090                 /* Set raid 1/10 fast path write capable bit in io_info.
1091                  * Note - reset peer_cmd and r1_alt_dev_handle if fp_possible
1092                  * disabled after this point. Try not to add more check for
1093                  * fp_possible toggle after this.
1094                  */
1095                 if (fp_possible &&
1096                                 (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) &&
1097                                 (raid->level == 1) && !io_info.isRead) {
1098                         r1_cmd = mrsas_get_mpt_cmd(sc);
1099                         if (mrsas_atomic_inc_return(&sc->fw_outstanding) > sc->max_scsi_cmds) {
1100                                 fp_possible = FALSE;
1101                                 mrsas_atomic_dec(&sc->fw_outstanding);
1102                         } else {
1103                                 r1_cmd = mrsas_get_mpt_cmd(sc);
1104                                 if (!r1_cmd) {
1105                                         fp_possible = FALSE;
1106                                         mrsas_atomic_dec(&sc->fw_outstanding);
1107                                 }
1108                                 else {
1109                                         cmd->peer_cmd = r1_cmd;
1110                                         r1_cmd->peer_cmd = cmd;
1111                                 }
1112                         }
1113                 }
1114         }
1115
1116         if (fp_possible) {
1117                 mrsas_set_pd_lba(io_request, csio->cdb_len, &io_info, ccb, map_ptr,
1118                     start_lba_lo, ld_block_size);
1119                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1120                 cmd->request_desc->SCSIIO.RequestFlags =
1121                     (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
1122                     MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1123                 if (sc->mrsas_gen3_ctrl) {
1124                         if (io_request->RaidContext.raid_context.regLockFlags == REGION_TYPE_UNUSED)
1125                                 cmd->request_desc->SCSIIO.RequestFlags =
1126                                     (MRSAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1127                                     MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1128                         io_request->RaidContext.raid_context.Type = MPI2_TYPE_CUDA;
1129                         io_request->RaidContext.raid_context.nseg = 0x1;
1130                         io_request->IoFlags |= MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH;
1131                         io_request->RaidContext.raid_context.regLockFlags |=
1132                             (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
1133                             MR_RL_FLAGS_SEQ_NUM_ENABLE);
1134                 } else if (sc->is_ventura || sc->is_aero) {
1135                         io_request->RaidContext.raid_context_g35.Type = MPI2_TYPE_CUDA;
1136                         io_request->RaidContext.raid_context_g35.nseg = 0x1;
1137                         io_request->RaidContext.raid_context_g35.routingFlags.bits.sqn = 1;
1138                         io_request->IoFlags |= MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH;
1139                         if (io_request->RaidContext.raid_context_g35.routingFlags.bits.sld) {
1140                                         io_request->RaidContext.raid_context_g35.RAIDFlags =
1141                                         (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
1142                                         << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
1143                         }
1144                 }
1145                 if ((sc->load_balance_info[device_id].loadBalanceFlag) &&
1146                     (io_info.isRead)) {
1147                         io_info.devHandle =
1148                             mrsas_get_updated_dev_handle(sc,
1149                             &sc->load_balance_info[device_id], &io_info);
1150                         cmd->load_balance = MRSAS_LOAD_BALANCE_FLAG;
1151                         cmd->pd_r1_lb = io_info.pd_after_lb;
1152                         if (sc->is_ventura || sc->is_aero)
1153                                 io_request->RaidContext.raid_context_g35.spanArm = io_info.span_arm;
1154                         else
1155                                 io_request->RaidContext.raid_context.spanArm = io_info.span_arm;
1156                 } else
1157                         cmd->load_balance = 0;
1158
1159                 if (sc->is_ventura || sc->is_aero)
1160                                 cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
1161                 else
1162                                 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
1163
1164                 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
1165                 io_request->DevHandle = io_info.devHandle;
1166                 cmd->pdInterface = io_info.pdInterface;
1167         } else {
1168                 /* Not FP IO */
1169                 io_request->RaidContext.raid_context.timeoutValue = map_ptr->raidMap.fpPdIoTimeoutSec;
1170                 cmd->request_desc->SCSIIO.RequestFlags =
1171                     (MRSAS_REQ_DESCRIPT_FLAGS_LD_IO <<
1172                     MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1173                 if (sc->mrsas_gen3_ctrl) {
1174                         if (io_request->RaidContext.raid_context.regLockFlags == REGION_TYPE_UNUSED)
1175                                 cmd->request_desc->SCSIIO.RequestFlags =
1176                                     (MRSAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1177                                     MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1178                         io_request->RaidContext.raid_context.Type = MPI2_TYPE_CUDA;
1179                         io_request->RaidContext.raid_context.regLockFlags |=
1180                             (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
1181                             MR_RL_FLAGS_SEQ_NUM_ENABLE);
1182                         io_request->RaidContext.raid_context.nseg = 0x1;
1183                 } else if (sc->is_ventura || sc->is_aero) {
1184                         io_request->RaidContext.raid_context_g35.Type = MPI2_TYPE_CUDA;
1185                         io_request->RaidContext.raid_context_g35.routingFlags.bits.sqn = 1;
1186                         io_request->RaidContext.raid_context_g35.nseg = 0x1;
1187                 }
1188                 io_request->Function = MRSAS_MPI2_FUNCTION_LD_IO_REQUEST;
1189                 io_request->DevHandle = device_id;
1190         }
1191         return (0);
1192 }
1193
1194 /*
1195  * mrsas_build_ldio_nonrw:      Builds an LDIO command
1196  * input:                               Adapter instance soft state
1197  *                                              Pointer to command packet
1198  *                                              Pointer to CCB
1199  *
1200  * This function builds the LDIO command packet.  It returns 0 if the command is
1201  * built successfully, otherwise it returns a 1.
1202  */
1203 int
1204 mrsas_build_ldio_nonrw(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
1205     union ccb *ccb)
1206 {
1207         struct ccb_hdr *ccb_h = &(ccb->ccb_h);
1208         u_int32_t device_id, ld;
1209         MR_DRV_RAID_MAP_ALL *map_ptr;
1210         MR_LD_RAID *raid;
1211         RAID_CONTEXT *pRAID_Context;
1212         MRSAS_RAID_SCSI_IO_REQUEST *io_request;
1213
1214         io_request = cmd->io_request;
1215         device_id = ccb_h->target_id;
1216
1217         map_ptr = sc->ld_drv_map[(sc->map_id & 1)];
1218         ld = MR_TargetIdToLdGet(device_id, map_ptr);
1219         raid = MR_LdRaidGet(ld, map_ptr);
1220         /* get RAID_Context pointer */
1221         pRAID_Context = &io_request->RaidContext.raid_context;
1222         /* Store the TM capability value in cmd */
1223         cmd->tmCapable = raid->capability.tmCapable;
1224
1225         /* FW path for LD Non-RW (SCSI management commands) */
1226         io_request->Function = MRSAS_MPI2_FUNCTION_LD_IO_REQUEST;
1227         io_request->DevHandle = device_id;
1228         cmd->request_desc->SCSIIO.RequestFlags =
1229             (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1230             MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1231
1232         io_request->RaidContext.raid_context.VirtualDiskTgtId = device_id;
1233         io_request->LUN[1] = ccb_h->target_lun & 0xF;
1234         io_request->DataLength = cmd->length;
1235
1236         if (mrsas_map_request(sc, cmd, ccb) == SUCCESS) {
1237                 if (cmd->sge_count > sc->max_num_sge) {
1238                         device_printf(sc->mrsas_dev, "Error: sge_count (0x%x) exceeds"
1239                             "max (0x%x) allowed\n", cmd->sge_count, sc->max_num_sge);
1240                         return (1);
1241                 }
1242                 if (sc->is_ventura || sc->is_aero)
1243                         io_request->RaidContext.raid_context_g35.numSGE = cmd->sge_count;
1244                 else {
1245                         /*
1246                          * numSGE store lower 8 bit of sge_count. numSGEExt store
1247                          * higher 8 bit of sge_count
1248                          */
1249                         io_request->RaidContext.raid_context.numSGE = cmd->sge_count;
1250                         io_request->RaidContext.raid_context.numSGEExt = (uint8_t)(cmd->sge_count >> 8);
1251                 }
1252         } else {
1253                 device_printf(sc->mrsas_dev, "Data map/load failed.\n");
1254                 return (1);
1255         }
1256         return (0);
1257 }
1258
1259 /*
1260  * mrsas_build_syspdio: Builds an DCDB command
1261  * input:                               Adapter instance soft state
1262  *                                              Pointer to command packet
1263  *                                              Pointer to CCB
1264  *
1265  * This function builds the DCDB inquiry command.  It returns 0 if the command
1266  * is built successfully, otherwise it returns a 1.
1267  */
1268 int
1269 mrsas_build_syspdio(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd,
1270     union ccb *ccb, struct cam_sim *sim, u_int8_t fp_possible)
1271 {
1272         struct ccb_hdr *ccb_h = &(ccb->ccb_h);
1273         u_int32_t device_id;
1274         MR_DRV_RAID_MAP_ALL *local_map_ptr;
1275         MRSAS_RAID_SCSI_IO_REQUEST *io_request;
1276         RAID_CONTEXT *pRAID_Context;
1277         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1278
1279         io_request = cmd->io_request;
1280         /* get RAID_Context pointer */
1281         pRAID_Context = &io_request->RaidContext.raid_context;
1282         device_id = ccb_h->target_id;
1283         local_map_ptr = sc->ld_drv_map[(sc->map_id & 1)];
1284         io_request->RaidContext.raid_context.RAIDFlags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
1285             << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
1286         io_request->RaidContext.raid_context.regLockFlags = 0;
1287         io_request->RaidContext.raid_context.regLockRowLBA = 0;
1288         io_request->RaidContext.raid_context.regLockLength = 0;
1289
1290         cmd->pdInterface = sc->target_list[device_id].interface_type;
1291
1292         /* If FW supports PD sequence number */
1293         if (sc->use_seqnum_jbod_fp &&
1294             sc->pd_list[device_id].driveType == 0x00) {
1295                 //printf("Using Drv seq num\n");
1296                 pd_sync = (void *)sc->jbodmap_mem[(sc->pd_seq_map_id - 1) & 1];
1297                 cmd->tmCapable = pd_sync->seq[device_id].capability.tmCapable;
1298                 /* More than 256 PD/JBOD support for Ventura */
1299                 if (sc->support_morethan256jbod)
1300                         io_request->RaidContext.raid_context.VirtualDiskTgtId =
1301                                 pd_sync->seq[device_id].pdTargetId;
1302                 else
1303                         io_request->RaidContext.raid_context.VirtualDiskTgtId =
1304                                 device_id + 255;
1305                 io_request->RaidContext.raid_context.configSeqNum = pd_sync->seq[device_id].seqNum;
1306                 io_request->DevHandle = pd_sync->seq[device_id].devHandle;
1307                 if (sc->is_ventura || sc->is_aero)
1308                         io_request->RaidContext.raid_context_g35.routingFlags.bits.sqn = 1;
1309                 else
1310                         io_request->RaidContext.raid_context.regLockFlags |=
1311                             (MR_RL_FLAGS_SEQ_NUM_ENABLE | MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
1312                 /* raid_context.Type = MPI2_TYPE_CUDA is valid only,
1313                  * if FW support Jbod Sequence number
1314                  */
1315                 io_request->RaidContext.raid_context.Type = MPI2_TYPE_CUDA;
1316                 io_request->RaidContext.raid_context.nseg = 0x1;
1317         } else if (sc->fast_path_io) {
1318                 //printf("Using LD RAID map\n");
1319                 io_request->RaidContext.raid_context.VirtualDiskTgtId = device_id;
1320                 io_request->RaidContext.raid_context.configSeqNum = 0;
1321                 local_map_ptr = sc->ld_drv_map[(sc->map_id & 1)];
1322                 io_request->DevHandle =
1323                     local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
1324         } else {
1325                 //printf("Using FW PATH\n");
1326                 /* Want to send all IO via FW path */
1327                 io_request->RaidContext.raid_context.VirtualDiskTgtId = device_id;
1328                 io_request->RaidContext.raid_context.configSeqNum = 0;
1329                 io_request->DevHandle = MR_DEVHANDLE_INVALID;
1330         }
1331
1332         cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
1333         cmd->request_desc->SCSIIO.MSIxIndex =
1334             sc->msix_vectors ? smp_processor_id() % sc->msix_vectors : 0;
1335
1336         if (!fp_possible) {
1337                 /* system pd firmware path */
1338                 io_request->Function = MRSAS_MPI2_FUNCTION_LD_IO_REQUEST;
1339                 cmd->request_desc->SCSIIO.RequestFlags =
1340                     (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1341                     MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1342                 io_request->RaidContext.raid_context.timeoutValue =
1343                     local_map_ptr->raidMap.fpPdIoTimeoutSec;
1344                 io_request->RaidContext.raid_context.VirtualDiskTgtId = device_id;
1345         } else {
1346                 /* system pd fast path */
1347                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1348                 io_request->RaidContext.raid_context.timeoutValue = local_map_ptr->raidMap.fpPdIoTimeoutSec;
1349
1350                 /*
1351                  * NOTE - For system pd RW cmds only IoFlags will be FAST_PATH
1352                  * Because the NON RW cmds will now go via FW Queue
1353                  * and not the Exception queue
1354                  */
1355                 if (sc->mrsas_gen3_ctrl || sc->is_ventura || sc->is_aero)
1356                         io_request->IoFlags |= MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH;
1357
1358                 cmd->request_desc->SCSIIO.RequestFlags =
1359                     (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
1360                     MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1361         }
1362
1363         io_request->LUN[1] = ccb_h->target_lun & 0xF;
1364         io_request->DataLength = cmd->length;
1365
1366         if (mrsas_map_request(sc, cmd, ccb) == SUCCESS) {
1367                 if (cmd->sge_count > sc->max_num_sge) {
1368                         device_printf(sc->mrsas_dev, "Error: sge_count (0x%x) exceeds"
1369                             "max (0x%x) allowed\n", cmd->sge_count, sc->max_num_sge);
1370                         return (1);
1371                 }
1372                 if (sc->is_ventura || sc->is_aero)
1373                         io_request->RaidContext.raid_context_g35.numSGE = cmd->sge_count;
1374                 else {
1375                         /*
1376                          * numSGE store lower 8 bit of sge_count. numSGEExt store
1377                          * higher 8 bit of sge_count
1378                          */
1379                         io_request->RaidContext.raid_context.numSGE = cmd->sge_count;
1380                         io_request->RaidContext.raid_context.numSGEExt = (uint8_t)(cmd->sge_count >> 8);
1381                 }
1382         } else {
1383                 device_printf(sc->mrsas_dev, "Data map/load failed.\n");
1384                 return (1);
1385         }
1386         return (0);
1387 }
1388
1389 /*
1390  * mrsas_is_prp_possible:       This function will tell whether PRPs should be built or not
1391  * sc:                                          Adapter instance soft state
1392  * cmd:                                         MPT command frame pointer
1393  * nsesg:                                       Number of OS SGEs
1394  *
1395  * This function will check whether IO is qualified to build PRPs
1396  * return:                              true: if PRP should be built
1397  *                                              false: if IEEE SGLs should be built
1398  */
1399 static boolean_t mrsas_is_prp_possible(struct mrsas_mpt_cmd *cmd,
1400         bus_dma_segment_t *segs, int nsegs)
1401 {
1402         struct mrsas_softc *sc = cmd->sc;
1403         int i;
1404         u_int32_t data_length = 0;
1405         bool build_prp = false;
1406         u_int32_t mr_nvme_pg_size;
1407
1408         mr_nvme_pg_size = max(sc->nvme_page_size, MR_DEFAULT_NVME_PAGE_SIZE);
1409         data_length = cmd->length;
1410
1411         if (data_length > (mr_nvme_pg_size * 5))
1412                 build_prp = true;
1413         else if ((data_length > (mr_nvme_pg_size * 4)) &&
1414                 (data_length <= (mr_nvme_pg_size * 5)))  {
1415                 /* check if 1st SG entry size is < residual beyond 4 pages */
1416                 if ((segs[0].ds_len) < (data_length - (mr_nvme_pg_size * 4)))
1417                         build_prp = true;
1418         }
1419
1420         /*check for SGE holes here*/
1421         for (i = 0; i < nsegs; i++) {
1422                 /* check for mid SGEs */
1423                 if ((i != 0) && (i != (nsegs - 1))) {
1424                                 if ((segs[i].ds_addr % mr_nvme_pg_size) ||
1425                                         (segs[i].ds_len % mr_nvme_pg_size)) {
1426                                         build_prp = false;
1427                                         mrsas_atomic_inc(&sc->sge_holes);
1428                                         break;
1429                                 }
1430                 }
1431
1432                 /* check for first SGE*/
1433                 if ((nsegs > 1) && (i == 0)) {
1434                                 if ((segs[i].ds_addr + segs[i].ds_len) % mr_nvme_pg_size) {
1435                                         build_prp = false;
1436                                         mrsas_atomic_inc(&sc->sge_holes);
1437                                         break;
1438                                 }
1439                 }
1440
1441                 /* check for Last SGE*/
1442                 if ((nsegs > 1) && (i == (nsegs - 1))) {
1443                                 if (segs[i].ds_addr % mr_nvme_pg_size) {
1444                                         build_prp = false;
1445                                         mrsas_atomic_inc(&sc->sge_holes);
1446                                         break;
1447                                 }
1448                 }
1449         }
1450
1451         return build_prp;
1452 }
1453
1454 /*
1455  * mrsas_map_request:   Map and load data
1456  * input:                               Adapter instance soft state
1457  *                                              Pointer to command packet
1458  *
1459  * For data from OS, map and load the data buffer into bus space.  The SG list
1460  * is built in the callback.  If the  bus dmamap load is not successful,
1461  * cmd->error_code will contain the  error code and a 1 is returned.
1462  */
1463 int
1464 mrsas_map_request(struct mrsas_softc *sc,
1465     struct mrsas_mpt_cmd *cmd, union ccb *ccb)
1466 {
1467         u_int32_t retcode = 0;
1468         struct cam_sim *sim;
1469
1470         sim = xpt_path_sim(cmd->ccb_ptr->ccb_h.path);
1471
1472         if (cmd->data != NULL) {
1473                 /* Map data buffer into bus space */
1474                 mtx_lock(&sc->io_lock);
1475 #if (__FreeBSD_version >= 902001)
1476                 retcode = bus_dmamap_load_ccb(sc->data_tag, cmd->data_dmamap, ccb,
1477                     mrsas_data_load_cb, cmd, 0);
1478 #else
1479                 retcode = bus_dmamap_load(sc->data_tag, cmd->data_dmamap, cmd->data,
1480                     cmd->length, mrsas_data_load_cb, cmd, BUS_DMA_NOWAIT);
1481 #endif
1482                 mtx_unlock(&sc->io_lock);
1483                 if (retcode)
1484                         device_printf(sc->mrsas_dev, "bus_dmamap_load(): retcode = %d\n", retcode);
1485                 if (retcode == EINPROGRESS) {
1486                         device_printf(sc->mrsas_dev, "request load in progress\n");
1487                         mrsas_freeze_simq(cmd, sim);
1488                 }
1489         }
1490         if (cmd->error_code)
1491                 return (1);
1492         return (retcode);
1493 }
1494
1495 /*
1496  * mrsas_unmap_request: Unmap and unload data
1497  * input:                               Adapter instance soft state
1498  *                                              Pointer to command packet
1499  *
1500  * This function unmaps and unloads data from OS.
1501  */
1502 void
1503 mrsas_unmap_request(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd)
1504 {
1505         if (cmd->data != NULL) {
1506                 if (cmd->flags & MRSAS_DIR_IN)
1507                         bus_dmamap_sync(sc->data_tag, cmd->data_dmamap, BUS_DMASYNC_POSTREAD);
1508                 if (cmd->flags & MRSAS_DIR_OUT)
1509                         bus_dmamap_sync(sc->data_tag, cmd->data_dmamap, BUS_DMASYNC_POSTWRITE);
1510                 mtx_lock(&sc->io_lock);
1511                 bus_dmamap_unload(sc->data_tag, cmd->data_dmamap);
1512                 mtx_unlock(&sc->io_lock);
1513         }
1514 }
1515
1516 /**
1517  * mrsas_build_ieee_sgl -       Prepare IEEE SGLs
1518  * @sc:                                         Adapter soft state
1519  * @segs:                                       OS SGEs pointers
1520  * @nseg:                                       Number of OS SGEs
1521  * @cmd:                                        Fusion command frame
1522  * return:                                      void
1523  */
1524 static void mrsas_build_ieee_sgl(struct mrsas_mpt_cmd *cmd, bus_dma_segment_t *segs, int nseg)
1525 {
1526         struct mrsas_softc *sc = cmd->sc;
1527         MRSAS_RAID_SCSI_IO_REQUEST *io_request;
1528         pMpi25IeeeSgeChain64_t sgl_ptr;
1529         int i = 0, sg_processed = 0;
1530
1531         io_request = cmd->io_request;
1532         sgl_ptr = (pMpi25IeeeSgeChain64_t)&io_request->SGL;
1533
1534         if (sc->mrsas_gen3_ctrl || sc->is_ventura || sc->is_aero) {
1535                 pMpi25IeeeSgeChain64_t sgl_ptr_end = sgl_ptr;
1536
1537                 sgl_ptr_end += sc->max_sge_in_main_msg - 1;
1538                 sgl_ptr_end->Flags = 0;
1539         }
1540         if (nseg != 0) {
1541                 for (i = 0; i < nseg; i++) {
1542                         sgl_ptr->Address = segs[i].ds_addr;
1543                         sgl_ptr->Length = segs[i].ds_len;
1544                         sgl_ptr->Flags = 0;
1545                         if (sc->mrsas_gen3_ctrl || sc->is_ventura || sc->is_aero) {
1546                                 if (i == nseg - 1)
1547                                         sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
1548                         }
1549                         sgl_ptr++;
1550                         sg_processed = i + 1;
1551                         if ((sg_processed == (sc->max_sge_in_main_msg - 1)) &&
1552                                 (nseg > sc->max_sge_in_main_msg)) {
1553                                 pMpi25IeeeSgeChain64_t sg_chain;
1554
1555                                 if (sc->mrsas_gen3_ctrl || sc->is_ventura || sc->is_aero) {
1556                                         if ((cmd->io_request->IoFlags & MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
1557                                                 != MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
1558                                                 cmd->io_request->ChainOffset = sc->chain_offset_io_request;
1559                                         else
1560                                                 cmd->io_request->ChainOffset = 0;
1561                                 } else
1562                                         cmd->io_request->ChainOffset = sc->chain_offset_io_request;
1563                                 sg_chain = sgl_ptr;
1564                                 if (sc->mrsas_gen3_ctrl || sc->is_ventura || sc->is_aero)
1565                                         sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
1566                                 else
1567                                         sg_chain->Flags = (IEEE_SGE_FLAGS_CHAIN_ELEMENT | MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
1568                                 sg_chain->Length = (sizeof(MPI2_SGE_IO_UNION) * (nseg - sg_processed));
1569                                 sg_chain->Address = cmd->chain_frame_phys_addr;
1570                                 sgl_ptr = (pMpi25IeeeSgeChain64_t)cmd->chain_frame;
1571                         }
1572                 }
1573         }
1574 }
1575
1576 /**
1577  * mrsas_build_prp_nvme - Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only
1578  * @sc:                                         Adapter soft state
1579  * @segs:                                       OS SGEs pointers
1580  * @nseg:                                       Number of OS SGEs
1581  * @cmd:                                        Fusion command frame
1582  * return:                                      void
1583  */
1584 static void mrsas_build_prp_nvme(struct mrsas_mpt_cmd *cmd, bus_dma_segment_t *segs, int nseg)
1585 {
1586         struct mrsas_softc *sc = cmd->sc;
1587         int sge_len, offset, num_prp_in_chain = 0;
1588         pMpi25IeeeSgeChain64_t main_chain_element, ptr_first_sgl, sgl_ptr;
1589         u_int64_t *ptr_sgl;
1590         bus_addr_t ptr_sgl_phys;
1591         u_int64_t sge_addr;
1592         u_int32_t page_mask, page_mask_result, i = 0;
1593         u_int32_t first_prp_len;
1594         int data_len = cmd->length;
1595         u_int32_t mr_nvme_pg_size = max(sc->nvme_page_size,
1596                                         MR_DEFAULT_NVME_PAGE_SIZE);
1597
1598         sgl_ptr = (pMpi25IeeeSgeChain64_t) &cmd->io_request->SGL;
1599         /*
1600          * NVMe has a very convoluted PRP format.  One PRP is required
1601          * for each page or partial page.  We need to split up OS SG
1602          * entries if they are longer than one page or cross a page
1603          * boundary.  We also have to insert a PRP list pointer entry as
1604          * the last entry in each physical page of the PRP list.
1605          *
1606          * NOTE: The first PRP "entry" is actually placed in the first
1607          * SGL entry in the main message in IEEE 64 format.  The 2nd
1608          * entry in the main message is the chain element, and the rest
1609          * of the PRP entries are built in the contiguous PCIe buffer.
1610          */
1611         page_mask = mr_nvme_pg_size - 1;
1612         ptr_sgl = (u_int64_t *) cmd->chain_frame;
1613         ptr_sgl_phys = cmd->chain_frame_phys_addr;
1614         memset(ptr_sgl, 0, sc->max_chain_frame_sz);
1615
1616         /* Build chain frame element which holds all PRPs except first*/
1617         main_chain_element = (pMpi25IeeeSgeChain64_t)
1618             ((u_int8_t *)sgl_ptr + sizeof(MPI25_IEEE_SGE_CHAIN64));
1619
1620         main_chain_element->Address = cmd->chain_frame_phys_addr;
1621         main_chain_element->NextChainOffset = 0;
1622         main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1623                                         IEEE_SGE_FLAGS_SYSTEM_ADDR |
1624                                         MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP;
1625
1626         /* Build first PRP, SGE need not to be PAGE aligned*/
1627         ptr_first_sgl = sgl_ptr;
1628         sge_addr = segs[i].ds_addr;
1629         sge_len = segs[i].ds_len;
1630         i++;
1631
1632         offset = (u_int32_t) (sge_addr & page_mask);
1633         first_prp_len = mr_nvme_pg_size - offset;
1634
1635         ptr_first_sgl->Address = sge_addr;
1636         ptr_first_sgl->Length = first_prp_len;
1637
1638         data_len -= first_prp_len;
1639
1640         if (sge_len > first_prp_len) {
1641                 sge_addr += first_prp_len;
1642                 sge_len -= first_prp_len;
1643         } else if (sge_len == first_prp_len) {
1644                 sge_addr = segs[i].ds_addr;
1645                 sge_len = segs[i].ds_len;
1646                 i++;
1647         }
1648
1649         for (;;) {
1650                 offset = (u_int32_t) (sge_addr & page_mask);
1651
1652                 /* Put PRP pointer due to page boundary*/
1653                 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask;
1654                 if (!page_mask_result) {
1655                         device_printf(sc->mrsas_dev, "BRCM: Put prp pointer as we are at page boundary"
1656                                         " ptr_sgl: 0x%p\n", ptr_sgl);
1657                         ptr_sgl_phys++;
1658                         *ptr_sgl = (uintptr_t)ptr_sgl_phys;
1659                         ptr_sgl++;
1660                         num_prp_in_chain++;
1661                 }
1662
1663                 *ptr_sgl = sge_addr;
1664                 ptr_sgl++;
1665                 ptr_sgl_phys++;
1666                 num_prp_in_chain++;
1667
1668                 sge_addr += mr_nvme_pg_size;
1669                 sge_len -= mr_nvme_pg_size;
1670                 data_len -= mr_nvme_pg_size;
1671
1672                 if (data_len <= 0)
1673                         break;
1674
1675                 if (sge_len > 0)
1676                         continue;
1677
1678                 sge_addr = segs[i].ds_addr;
1679                 sge_len = segs[i].ds_len;
1680                 i++;
1681         }
1682
1683         main_chain_element->Length = num_prp_in_chain * sizeof(u_int64_t);
1684         mrsas_atomic_inc(&sc->prp_count);
1685
1686 }
1687
1688 /*
1689  * mrsas_data_load_cb:  Callback entry point to build SGLs
1690  * input:                               Pointer to command packet as argument
1691  *                                              Pointer to segment
1692  *                                              Number of segments Error
1693  *
1694  * This is the callback function of the bus dma map load.  It builds SG list
1695  */
1696 static void
1697 mrsas_data_load_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1698 {
1699         struct mrsas_mpt_cmd *cmd = (struct mrsas_mpt_cmd *)arg;
1700         struct mrsas_softc *sc = cmd->sc;
1701         boolean_t build_prp = false;
1702
1703         if (error) {
1704                 cmd->error_code = error;
1705                 device_printf(sc->mrsas_dev, "mrsas_data_load_cb_prp: error=%d\n", error);
1706                 if (error == EFBIG) {
1707                         cmd->ccb_ptr->ccb_h.status = CAM_REQ_TOO_BIG;
1708                         return;
1709                 }
1710         }
1711         if (cmd->flags & MRSAS_DIR_IN)
1712                 bus_dmamap_sync(cmd->sc->data_tag, cmd->data_dmamap,
1713                     BUS_DMASYNC_PREREAD);
1714         if (cmd->flags & MRSAS_DIR_OUT)
1715                 bus_dmamap_sync(cmd->sc->data_tag, cmd->data_dmamap,
1716                     BUS_DMASYNC_PREWRITE);
1717         if (nseg > sc->max_num_sge) {
1718                 device_printf(sc->mrsas_dev, "SGE count is too large or 0.\n");
1719                 return;
1720         }
1721
1722         /* Check for whether PRPs should be built or IEEE SGLs*/
1723         if ((cmd->io_request->IoFlags & MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) &&
1724                         (cmd->pdInterface == NVME_PD))
1725                 build_prp = mrsas_is_prp_possible(cmd, segs, nseg);
1726
1727         if (build_prp == true)
1728                 mrsas_build_prp_nvme(cmd, segs, nseg);
1729         else
1730                 mrsas_build_ieee_sgl(cmd, segs, nseg);
1731
1732         cmd->sge_count = nseg;
1733 }
1734
1735 /*
1736  * mrsas_freeze_simq:   Freeze SIM queue
1737  * input:                               Pointer to command packet
1738  *                                              Pointer to SIM
1739  *
1740  * This function freezes the sim queue.
1741  */
1742 static void
1743 mrsas_freeze_simq(struct mrsas_mpt_cmd *cmd, struct cam_sim *sim)
1744 {
1745         union ccb *ccb = (union ccb *)(cmd->ccb_ptr);
1746
1747         xpt_freeze_simq(sim, 1);
1748         ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
1749         ccb->ccb_h.status |= CAM_REQUEUE_REQ;
1750 }
1751
1752 void
1753 mrsas_xpt_freeze(struct mrsas_softc *sc)
1754 {
1755         xpt_freeze_simq(sc->sim_0, 1);
1756         xpt_freeze_simq(sc->sim_1, 1);
1757 }
1758
1759 void
1760 mrsas_xpt_release(struct mrsas_softc *sc)
1761 {
1762         xpt_release_simq(sc->sim_0, 1);
1763         xpt_release_simq(sc->sim_1, 1);
1764 }
1765
1766 /*
1767  * mrsas_cmd_done:      Perform remaining command completion
1768  * input:                       Adapter instance soft state  Pointer to command packet
1769  *
1770  * This function calls ummap request and releases the MPT command.
1771  */
1772 void
1773 mrsas_cmd_done(struct mrsas_softc *sc, struct mrsas_mpt_cmd *cmd)
1774 {
1775         mrsas_unmap_request(sc, cmd);
1776
1777         mtx_lock(&sc->sim_lock);
1778         if (cmd->callout_owner) {
1779                 callout_stop(&cmd->cm_callout);
1780                 cmd->callout_owner  = false;
1781         }
1782         xpt_done(cmd->ccb_ptr);
1783         cmd->ccb_ptr = NULL;
1784         mtx_unlock(&sc->sim_lock);
1785         mrsas_release_mpt_cmd(cmd);
1786 }
1787
1788 /*
1789  * mrsas_cam_poll:      Polling entry point
1790  * input:                       Pointer to SIM
1791  *
1792  * This is currently a stub function.
1793  */
1794 static void
1795 mrsas_cam_poll(struct cam_sim *sim)
1796 {
1797         int i;
1798         struct mrsas_softc *sc = (struct mrsas_softc *)cam_sim_softc(sim);
1799
1800         if (sc->msix_vectors != 0){
1801                 for (i=0; i<sc->msix_vectors; i++){
1802                         mrsas_complete_cmd(sc, i);
1803                 }
1804         } else {
1805                 mrsas_complete_cmd(sc, 0);
1806         }
1807 }
1808
1809 /*
1810  * mrsas_bus_scan:      Perform bus scan
1811  * input:                       Adapter instance soft state
1812  *
1813  * This mrsas_bus_scan function is needed for FreeBSD 7.x.  Also, it should not
1814  * be called in FreeBSD 8.x and later versions, where the bus scan is
1815  * automatic.
1816  */
1817 int
1818 mrsas_bus_scan(struct mrsas_softc *sc)
1819 {
1820         union ccb *ccb_0;
1821         union ccb *ccb_1;
1822
1823         if ((ccb_0 = xpt_alloc_ccb()) == NULL) {
1824                 return (ENOMEM);
1825         }
1826         if ((ccb_1 = xpt_alloc_ccb()) == NULL) {
1827                 xpt_free_ccb(ccb_0);
1828                 return (ENOMEM);
1829         }
1830         mtx_lock(&sc->sim_lock);
1831         if (xpt_create_path(&ccb_0->ccb_h.path, xpt_periph, cam_sim_path(sc->sim_0),
1832             CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
1833                 xpt_free_ccb(ccb_0);
1834                 xpt_free_ccb(ccb_1);
1835                 mtx_unlock(&sc->sim_lock);
1836                 return (EIO);
1837         }
1838         if (xpt_create_path(&ccb_1->ccb_h.path, xpt_periph, cam_sim_path(sc->sim_1),
1839             CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
1840                 xpt_free_ccb(ccb_0);
1841                 xpt_free_ccb(ccb_1);
1842                 mtx_unlock(&sc->sim_lock);
1843                 return (EIO);
1844         }
1845         mtx_unlock(&sc->sim_lock);
1846         xpt_rescan(ccb_0);
1847         xpt_rescan(ccb_1);
1848
1849         return (0);
1850 }
1851
1852 /*
1853  * mrsas_bus_scan_sim:  Perform bus scan per SIM
1854  * input:                               adapter instance soft state
1855  *
1856  * This function will be called from Event handler on LD creation/deletion,
1857  * JBOD on/off.
1858  */
1859 int
1860 mrsas_bus_scan_sim(struct mrsas_softc *sc, struct cam_sim *sim)
1861 {
1862         union ccb *ccb;
1863
1864         if ((ccb = xpt_alloc_ccb()) == NULL) {
1865                 return (ENOMEM);
1866         }
1867         mtx_lock(&sc->sim_lock);
1868         if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, cam_sim_path(sim),
1869             CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
1870                 xpt_free_ccb(ccb);
1871                 mtx_unlock(&sc->sim_lock);
1872                 return (EIO);
1873         }
1874         mtx_unlock(&sc->sim_lock);
1875         xpt_rescan(ccb);
1876
1877         return (0);
1878 }
1879
1880 /*
1881  * mrsas_track_scsiio:  Track IOs for a given target in the mpt_cmd_list
1882  * input:           Adapter instance soft state
1883  *                  Target ID of target
1884  *                  Bus ID of the target
1885  *
1886  * This function checks for any pending IO in the whole mpt_cmd_list pool
1887  * with the bus_id and target_id passed in arguments. If some IO is found
1888  * that means target reset is not successfully completed.
1889  *
1890  * Returns FAIL if IOs pending to the target device, else return SUCCESS
1891  */
1892 static int
1893 mrsas_track_scsiio(struct mrsas_softc *sc, target_id_t tgt_id, u_int32_t bus_id)
1894 {
1895         int i;
1896         struct mrsas_mpt_cmd *mpt_cmd = NULL;
1897
1898         for (i = 0 ; i < sc->max_fw_cmds; i++) {
1899                 mpt_cmd = sc->mpt_cmd_list[i];
1900
1901                 /*
1902                  * Check if the target_id and bus_id is same as the timeout IO
1903                  */
1904                 if (mpt_cmd->ccb_ptr) {
1905                         /* bus_id = 1 denotes a VD */
1906                         if (bus_id == 1)
1907                                 tgt_id =
1908                                     (mpt_cmd->ccb_ptr->ccb_h.target_id - (MRSAS_MAX_PD - 1));
1909
1910                         if (mpt_cmd->ccb_ptr->cpi.bus_id == bus_id &&
1911                             mpt_cmd->ccb_ptr->ccb_h.target_id == tgt_id) {
1912                                 device_printf(sc->mrsas_dev,
1913                                     "IO commands pending to target id %d\n", tgt_id);
1914                                 return FAIL;
1915                         }
1916                 }
1917         }
1918
1919         return SUCCESS;
1920 }
1921
1922 #if TM_DEBUG
1923 /*
1924  * mrsas_tm_response_code: Prints TM response code received from FW
1925  * input:           Adapter instance soft state
1926  *                  MPI reply returned from firmware
1927  *
1928  * Returns nothing.
1929  */
1930 static void
1931 mrsas_tm_response_code(struct mrsas_softc *sc,
1932         MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
1933 {
1934         char *desc;
1935
1936         switch (mpi_reply->ResponseCode) {
1937         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
1938                 desc = "task management request completed";
1939                 break;
1940         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
1941                 desc = "invalid frame";
1942                 break;
1943         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
1944                 desc = "task management request not supported";
1945                 break;
1946         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
1947                 desc = "task management request failed";
1948                 break;
1949         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
1950                 desc = "task management request succeeded";
1951                 break;
1952         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
1953                 desc = "invalid lun";
1954                 break;
1955         case 0xA:
1956                 desc = "overlapped tag attempted";
1957                 break;
1958         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
1959                 desc = "task queued, however not sent to target";
1960                 break;
1961         default:
1962                 desc = "unknown";
1963                 break;
1964         }
1965         device_printf(sc->mrsas_dev, "response_code(%01x): %s\n",
1966             mpi_reply->ResponseCode, desc);
1967         device_printf(sc->mrsas_dev,
1968             "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo\n"
1969             "0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
1970             mpi_reply->TerminationCount, mpi_reply->DevHandle,
1971             mpi_reply->Function, mpi_reply->TaskType,
1972             mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
1973 }
1974 #endif
1975
1976 /*
1977  * mrsas_issue_tm:  Fires the TM command to FW and waits for completion
1978  * input:           Adapter instance soft state
1979  *                  reqest descriptor compiled by mrsas_reset_targets
1980  *
1981  * Returns FAIL if TM command TIMEDOUT from FW else SUCCESS.
1982  */
1983 static int
1984 mrsas_issue_tm(struct mrsas_softc *sc,
1985         MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc)
1986 {
1987         int sleep_stat;
1988
1989         mrsas_fire_cmd(sc, req_desc->addr.u.low, req_desc->addr.u.high);
1990         sleep_stat = msleep(&sc->ocr_chan, &sc->sim_lock, PRIBIO, "tm_sleep", 50*hz);
1991
1992         if (sleep_stat == EWOULDBLOCK) {
1993                 device_printf(sc->mrsas_dev, "tm cmd TIMEDOUT\n");
1994                 return FAIL;
1995         }
1996
1997         return SUCCESS;
1998 }
1999
2000 /*
2001  * mrsas_reset_targets : Gathers info to fire a target reset command
2002  * input:           Adapter instance soft state
2003  *
2004  * This function compiles data for a target reset command to be fired to the FW
2005  * and then traverse the target_reset_pool to see targets with TIMEDOUT IOs.
2006  *
2007  * Returns SUCCESS or FAIL
2008  */
2009 int mrsas_reset_targets(struct mrsas_softc *sc)
2010 {
2011         struct mrsas_mpt_cmd *tm_mpt_cmd = NULL;
2012         struct mrsas_mpt_cmd *tgt_mpt_cmd = NULL;
2013         MR_TASK_MANAGE_REQUEST *mr_request;
2014         MPI2_SCSI_TASK_MANAGE_REQUEST *tm_mpi_request;
2015         MRSAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2016         int retCode = FAIL, count, i, outstanding;
2017         u_int32_t MSIxIndex, bus_id;
2018         target_id_t tgt_id;
2019 #if TM_DEBUG
2020         MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
2021 #endif
2022
2023         outstanding = mrsas_atomic_read(&sc->fw_outstanding);
2024
2025         if (!outstanding) {
2026                 device_printf(sc->mrsas_dev, "NO IOs pending...\n");
2027                 mrsas_atomic_set(&sc->target_reset_outstanding, 0);
2028                 retCode = SUCCESS;
2029                 goto return_status;
2030         } else if (sc->adprecovery != MRSAS_HBA_OPERATIONAL) {
2031                 device_printf(sc->mrsas_dev, "Controller is not operational\n");
2032                 goto return_status;
2033         } else {
2034                 /* Some more error checks will be added in future */
2035         }
2036
2037         /* Get an mpt frame and an index to fire the TM cmd */
2038         tm_mpt_cmd = mrsas_get_mpt_cmd(sc);
2039         if (!tm_mpt_cmd) {
2040                 retCode = FAIL;
2041                 goto return_status;
2042         }
2043
2044         req_desc = mrsas_get_request_desc(sc, (tm_mpt_cmd->index) - 1);
2045         if (!req_desc) {
2046                 device_printf(sc->mrsas_dev, "Cannot get request_descriptor for tm.\n");
2047                 retCode = FAIL;
2048                 goto release_mpt;
2049         }
2050         memset(req_desc, 0, sizeof(MRSAS_REQUEST_DESCRIPTOR_UNION));
2051
2052         req_desc->HighPriority.SMID = tm_mpt_cmd->index;
2053         req_desc->HighPriority.RequestFlags =
2054             (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
2055             MRSAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2056         req_desc->HighPriority.MSIxIndex =  0;
2057         req_desc->HighPriority.LMID = 0;
2058         req_desc->HighPriority.Reserved1 = 0;
2059         tm_mpt_cmd->request_desc = req_desc;
2060
2061         mr_request = (MR_TASK_MANAGE_REQUEST *) tm_mpt_cmd->io_request;
2062         memset(mr_request, 0, sizeof(MR_TASK_MANAGE_REQUEST));
2063
2064         tm_mpi_request = (MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
2065         tm_mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
2066         tm_mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
2067         tm_mpi_request->TaskMID = 0; /* smid task */
2068         tm_mpi_request->LUN[1] = 0;
2069
2070         /* Traverse the tm_mpt pool to get valid entries */
2071         for (i = 0 ; i < MRSAS_MAX_TM_TARGETS; i++) {
2072                 if(!sc->target_reset_pool[i]) {
2073                         continue;
2074                 } else {
2075                         tgt_mpt_cmd = sc->target_reset_pool[i];
2076                 }
2077
2078                 tgt_id = i;
2079
2080                 /* See if the target is tm capable or NOT */
2081                 if (!tgt_mpt_cmd->tmCapable) {
2082                         device_printf(sc->mrsas_dev, "Task management NOT SUPPORTED for "
2083                             "CAM target:%d\n", tgt_id);
2084
2085                         retCode = FAIL;
2086                         goto release_mpt;
2087                 }
2088
2089                 tm_mpi_request->DevHandle = tgt_mpt_cmd->io_request->DevHandle;
2090
2091                 if (i < (MRSAS_MAX_PD - 1)) {
2092                         mr_request->uTmReqReply.tmReqFlags.isTMForPD = 1;
2093                         bus_id = 0;
2094                 } else {
2095                         mr_request->uTmReqReply.tmReqFlags.isTMForLD = 1;
2096                         bus_id = 1;
2097                 }
2098
2099                 device_printf(sc->mrsas_dev, "TM will be fired for "
2100                     "CAM target:%d and bus_id %d\n", tgt_id, bus_id);
2101
2102                 sc->ocr_chan = (void *)&tm_mpt_cmd;
2103                 retCode = mrsas_issue_tm(sc, req_desc);
2104                 if (retCode == FAIL)
2105                         goto release_mpt;
2106
2107 #if TM_DEBUG
2108                 mpi_reply =
2109                     (MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->uTmReqReply.TMReply;
2110                 mrsas_tm_response_code(sc, mpi_reply);
2111 #endif
2112                 mrsas_atomic_dec(&sc->target_reset_outstanding);
2113                 sc->target_reset_pool[i] = NULL;
2114
2115                 /* Check for pending cmds in the mpt_cmd_pool with the tgt_id */
2116                 mrsas_disable_intr(sc);
2117                 /* Wait for 1 second to complete parallel ISR calling same
2118                  * mrsas_complete_cmd()
2119                  */
2120                 msleep(&sc->ocr_chan, &sc->sim_lock, PRIBIO, "mrsas_reset_wakeup",
2121                    1 * hz);
2122                 count = sc->msix_vectors > 0 ? sc->msix_vectors : 1;
2123                 mtx_unlock(&sc->sim_lock);
2124                 for (MSIxIndex = 0; MSIxIndex < count; MSIxIndex++)
2125                     mrsas_complete_cmd(sc, MSIxIndex);
2126                 mtx_lock(&sc->sim_lock);
2127                 retCode = mrsas_track_scsiio(sc, tgt_id, bus_id);
2128                 mrsas_enable_intr(sc);
2129
2130                 if (retCode == FAIL)
2131                         goto release_mpt;
2132         }
2133
2134         device_printf(sc->mrsas_dev, "Number of targets outstanding "
2135             "after reset: %d\n", mrsas_atomic_read(&sc->target_reset_outstanding));
2136
2137 release_mpt:
2138         mrsas_release_mpt_cmd(tm_mpt_cmd);
2139 return_status:
2140         device_printf(sc->mrsas_dev, "target reset %s!!\n",
2141                 (retCode == SUCCESS) ? "SUCCESS" : "FAIL");
2142
2143         return retCode;
2144 }