hw/megasas.c

   1 /*
   2  * QEMU MegaRAID SAS 8708EM2 Host Bus Adapter emulation
   3  * Based on the linux driver code at drivers/scsi/megaraid
   4  *
   5  * Copyright (c) 2009-2012 Hannes Reinecke, SUSE Labs
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include "hw.h"
  22 #include "pci.h"
  23 #include "dma.h"
  24 #include "msix.h"
  25 #include "iov.h"
  26 #include "scsi.h"
  27 #include "scsi-defs.h"
  28 #include "trace.h"
  29
  30 #include "mfi.h"
  31
  32 #define MEGASAS_VERSION "1.70"
  33 #define MEGASAS_MAX_FRAMES 2048         /* Firmware limit at 65535 */
  34 #define MEGASAS_DEFAULT_FRAMES 1000     /* Windows requires this */
  35 #define MEGASAS_MAX_SGE 128             /* Firmware limit */
  36 #define MEGASAS_DEFAULT_SGE 80
  37 #define MEGASAS_MAX_SECTORS 0xFFFF      /* No real limit */
  38 #define MEGASAS_MAX_ARRAYS 128
  39
  40 #define MEGASAS_HBA_SERIAL "QEMU123456"
  41 #define NAA_LOCALLY_ASSIGNED_ID 0x3ULL
  42 #define IEEE_COMPANY_LOCALLY_ASSIGNED 0x525400
  43
  44 #define MEGASAS_FLAG_USE_JBOD      0
  45 #define MEGASAS_MASK_USE_JBOD      (1 << MEGASAS_FLAG_USE_JBOD)
  46 #define MEGASAS_FLAG_USE_MSIX      1
  47 #define MEGASAS_MASK_USE_MSIX      (1 << MEGASAS_FLAG_USE_MSIX)
  48 #define MEGASAS_FLAG_USE_QUEUE64   2
  49 #define MEGASAS_MASK_USE_QUEUE64   (1 << MEGASAS_FLAG_USE_QUEUE64)
  50
  51 static const char *mfi_frame_desc[] = {
  52     "MFI init", "LD Read", "LD Write", "LD SCSI", "PD SCSI",
  53     "MFI Doorbell", "MFI Abort", "MFI SMP", "MFI Stop"};
  54
  55 typedef struct MegasasCmd {
  56     uint32_t index;
  57     uint16_t flags;
  58     uint16_t count;
  59     uint64_t context;
  60
  61     hwaddr pa;
  62     hwaddr pa_size;
  63     union mfi_frame *frame;
  64     SCSIRequest *req;
  65     QEMUSGList qsg;
  66     void *iov_buf;
  67     size_t iov_size;
  68     size_t iov_offset;
  69     struct MegasasState *state;
  70 } MegasasCmd;
  71
  72 typedef struct MegasasState {
  73     PCIDevice dev;
  74     MemoryRegion mmio_io;
  75     MemoryRegion port_io;
  76     MemoryRegion queue_io;
  77     uint32_t frame_hi;
  78
  79     int fw_state;
  80     uint32_t fw_sge;
  81     uint32_t fw_cmds;
  82     uint32_t flags;
  83     int fw_luns;
  84     int intr_mask;
  85     int doorbell;
  86     int busy;
  87
  88     MegasasCmd *event_cmd;
  89     int event_locale;
  90     int event_class;
  91     int event_count;
  92     int shutdown_event;
  93     int boot_event;
  94
  95     uint64_t sas_addr;
  96     char *hba_serial;
  97
  98     uint64_t reply_queue_pa;
  99     void *reply_queue;
 100     int reply_queue_len;
 101     int reply_queue_head;
 102     int reply_queue_tail;
 103     uint64_t consumer_pa;
 104     uint64_t producer_pa;
 105
 106     MegasasCmd frames[MEGASAS_MAX_FRAMES];
 107
 108     SCSIBus bus;
 109 } MegasasState;
 110
 111 #define MEGASAS_INTR_DISABLED_MASK 0xFFFFFFFF
 112
 113 static bool megasas_intr_enabled(MegasasState *s)
 114 {
 115     if ((s->intr_mask & MEGASAS_INTR_DISABLED_MASK) !=
 116         MEGASAS_INTR_DISABLED_MASK) {
 117         return true;
 118     }
 119     return false;
 120 }
 121
 122 static bool megasas_use_queue64(MegasasState *s)
 123 {
 124     return s->flags & MEGASAS_MASK_USE_QUEUE64;
 125 }
 126
 127 static bool megasas_use_msix(MegasasState *s)
 128 {
 129     return s->flags & MEGASAS_MASK_USE_MSIX;
 130 }
 131
 132 static bool megasas_is_jbod(MegasasState *s)
 133 {
 134     return s->flags & MEGASAS_MASK_USE_JBOD;
 135 }
 136
 137 static void megasas_frame_set_cmd_status(unsigned long frame, uint8_t v)
 138 {
 139     stb_phys(frame + offsetof(struct mfi_frame_header, cmd_status), v);
 140 }
 141
 142 static void megasas_frame_set_scsi_status(unsigned long frame, uint8_t v)
 143 {
 144     stb_phys(frame + offsetof(struct mfi_frame_header, scsi_status), v);
 145 }
 146
 147 /*
 148  * Context is considered opaque, but the HBA firmware is running
 149  * in little endian mode. So convert it to little endian, too.
 150  */
 151 static uint64_t megasas_frame_get_context(unsigned long frame)
 152 {
 153     return ldq_le_phys(frame + offsetof(struct mfi_frame_header, context));
 154 }
 155
 156 static bool megasas_frame_is_ieee_sgl(MegasasCmd *cmd)
 157 {
 158     return cmd->flags & MFI_FRAME_IEEE_SGL;
 159 }
 160
 161 static bool megasas_frame_is_sgl64(MegasasCmd *cmd)
 162 {
 163     return cmd->flags & MFI_FRAME_SGL64;
 164 }
 165
 166 static bool megasas_frame_is_sense64(MegasasCmd *cmd)
 167 {
 168     return cmd->flags & MFI_FRAME_SENSE64;
 169 }
 170
 171 static uint64_t megasas_sgl_get_addr(MegasasCmd *cmd,
 172                                      union mfi_sgl *sgl)
 173 {
 174     uint64_t addr;
 175
 176     if (megasas_frame_is_ieee_sgl(cmd)) {
 177         addr = le64_to_cpu(sgl->sg_skinny->addr);
 178     } else if (megasas_frame_is_sgl64(cmd)) {
 179         addr = le64_to_cpu(sgl->sg64->addr);
 180     } else {
 181         addr = le32_to_cpu(sgl->sg32->addr);
 182     }
 183     return addr;
 184 }
 185
 186 static uint32_t megasas_sgl_get_len(MegasasCmd *cmd,
 187                                     union mfi_sgl *sgl)
 188 {
 189     uint32_t len;
 190
 191     if (megasas_frame_is_ieee_sgl(cmd)) {
 192         len = le32_to_cpu(sgl->sg_skinny->len);
 193     } else if (megasas_frame_is_sgl64(cmd)) {
 194         len = le32_to_cpu(sgl->sg64->len);
 195     } else {
 196         len = le32_to_cpu(sgl->sg32->len);
 197     }
 198     return len;
 199 }
 200
 201 static union mfi_sgl *megasas_sgl_next(MegasasCmd *cmd,
 202                                        union mfi_sgl *sgl)
 203 {
 204     uint8_t *next = (uint8_t *)sgl;
 205
 206     if (megasas_frame_is_ieee_sgl(cmd)) {
 207         next += sizeof(struct mfi_sg_skinny);
 208     } else if (megasas_frame_is_sgl64(cmd)) {
 209         next += sizeof(struct mfi_sg64);
 210     } else {
 211         next += sizeof(struct mfi_sg32);
 212     }
 213
 214     if (next >= (uint8_t *)cmd->frame + cmd->pa_size) {
 215         return NULL;
 216     }
 217     return (union mfi_sgl *)next;
 218 }
 219
 220 static void megasas_soft_reset(MegasasState *s);
 221
 222 static int megasas_map_sgl(MegasasState *s, MegasasCmd *cmd, union mfi_sgl *sgl)
 223 {
 224     int i;
 225     int iov_count = 0;
 226     size_t iov_size = 0;
 227
 228     cmd->flags = le16_to_cpu(cmd->frame->header.flags);
 229     iov_count = cmd->frame->header.sge_count;
 230     if (iov_count > MEGASAS_MAX_SGE) {
 231         trace_megasas_iovec_sgl_overflow(cmd->index, iov_count,
 232                                          MEGASAS_MAX_SGE);
 233         return iov_count;
 234     }
 235     qemu_sglist_init(&cmd->qsg, iov_count, pci_dma_context(&s->dev));
 236     for (i = 0; i < iov_count; i++) {
 237         dma_addr_t iov_pa, iov_size_p;
 238
 239         if (!sgl) {
 240             trace_megasas_iovec_sgl_underflow(cmd->index, i);
 241             goto unmap;
 242         }
 243         iov_pa = megasas_sgl_get_addr(cmd, sgl);
 244         iov_size_p = megasas_sgl_get_len(cmd, sgl);
 245         if (!iov_pa || !iov_size_p) {
 246             trace_megasas_iovec_sgl_invalid(cmd->index, i,
 247                                             iov_pa, iov_size_p);
 248             goto unmap;
 249         }
 250         qemu_sglist_add(&cmd->qsg, iov_pa, iov_size_p);
 251         sgl = megasas_sgl_next(cmd, sgl);
 252         iov_size += (size_t)iov_size_p;
 253     }
 254     if (cmd->iov_size > iov_size) {
 255         trace_megasas_iovec_overflow(cmd->index, iov_size, cmd->iov_size);
 256     } else if (cmd->iov_size < iov_size) {
 257         trace_megasas_iovec_underflow(cmd->iov_size, iov_size, cmd->iov_size);
 258     }
 259     cmd->iov_offset = 0;
 260     return 0;
 261 unmap:
 262     qemu_sglist_destroy(&cmd->qsg);
 263     return iov_count - i;
 264 }
 265
 266 static void megasas_unmap_sgl(MegasasCmd *cmd)
 267 {
 268     qemu_sglist_destroy(&cmd->qsg);
 269     cmd->iov_offset = 0;
 270 }
 271
 272 /*
 273  * passthrough sense and io sense are at the same offset
 274  */
 275 static int megasas_build_sense(MegasasCmd *cmd, uint8_t *sense_ptr,
 276     uint8_t sense_len)
 277 {
 278     uint32_t pa_hi = 0, pa_lo;
 279     hwaddr pa;
 280
 281     if (sense_len > cmd->frame->header.sense_len) {
 282         sense_len = cmd->frame->header.sense_len;
 283     }
 284     if (sense_len) {
 285         pa_lo = le32_to_cpu(cmd->frame->pass.sense_addr_lo);
 286         if (megasas_frame_is_sense64(cmd)) {
 287             pa_hi = le32_to_cpu(cmd->frame->pass.sense_addr_hi);
 288         }
 289         pa = ((uint64_t) pa_hi << 32) | pa_lo;
 290         cpu_physical_memory_write(pa, sense_ptr, sense_len);
 291         cmd->frame->header.sense_len = sense_len;
 292     }
 293     return sense_len;
 294 }
 295
 296 static void megasas_write_sense(MegasasCmd *cmd, SCSISense sense)
 297 {
 298     uint8_t sense_buf[SCSI_SENSE_BUF_SIZE];
 299     uint8_t sense_len = 18;
 300
 301     memset(sense_buf, 0, sense_len);
 302     sense_buf[0] = 0xf0;
 303     sense_buf[2] = sense.key;
 304     sense_buf[7] = 10;
 305     sense_buf[12] = sense.asc;
 306     sense_buf[13] = sense.ascq;
 307     megasas_build_sense(cmd, sense_buf, sense_len);
 308 }
 309
 310 static void megasas_copy_sense(MegasasCmd *cmd)
 311 {
 312     uint8_t sense_buf[SCSI_SENSE_BUF_SIZE];
 313     uint8_t sense_len;
 314
 315     sense_len = scsi_req_get_sense(cmd->req, sense_buf,
 316                                    SCSI_SENSE_BUF_SIZE);
 317     megasas_build_sense(cmd, sense_buf, sense_len);
 318 }
 319
 320 /*
 321  * Format an INQUIRY CDB
 322  */
 323 static int megasas_setup_inquiry(uint8_t *cdb, int pg, int len)
 324 {
 325     memset(cdb, 0, 6);
 326     cdb[0] = INQUIRY;
 327     if (pg > 0) {
 328         cdb[1] = 0x1;
 329         cdb[2] = pg;
 330     }
 331     cdb[3] = (len >> 8) & 0xff;
 332     cdb[4] = (len & 0xff);
 333     return len;
 334 }
 335
 336 /*
 337  * Encode lba and len into a READ_16/WRITE_16 CDB
 338  */
 339 static void megasas_encode_lba(uint8_t *cdb, uint64_t lba,
 340                                uint32_t len, bool is_write)
 341 {
 342     memset(cdb, 0x0, 16);
 343     if (is_write) {
 344         cdb[0] = WRITE_16;
 345     } else {
 346         cdb[0] = READ_16;
 347     }
 348     cdb[2] = (lba >> 56) & 0xff;
 349     cdb[3] = (lba >> 48) & 0xff;
 350     cdb[4] = (lba >> 40) & 0xff;
 351     cdb[5] = (lba >> 32) & 0xff;
 352     cdb[6] = (lba >> 24) & 0xff;
 353     cdb[7] = (lba >> 16) & 0xff;
 354     cdb[8] = (lba >> 8) & 0xff;
 355     cdb[9] = (lba) & 0xff;
 356     cdb[10] = (len >> 24) & 0xff;
 357     cdb[11] = (len >> 16) & 0xff;
 358     cdb[12] = (len >> 8) & 0xff;
 359     cdb[13] = (len) & 0xff;
 360 }
 361
 362 /*
 363  * Utility functions
 364  */
 365 static uint64_t megasas_fw_time(void)
 366 {
 367     struct tm curtime;
 368     uint64_t bcd_time;
 369
 370     qemu_get_timedate(&curtime, 0);
 371     bcd_time = ((uint64_t)curtime.tm_sec & 0xff) << 48 |
 372         ((uint64_t)curtime.tm_min & 0xff)  << 40 |
 373         ((uint64_t)curtime.tm_hour & 0xff) << 32 |
 374         ((uint64_t)curtime.tm_mday & 0xff) << 24 |
 375         ((uint64_t)curtime.tm_mon & 0xff)  << 16 |
 376         ((uint64_t)(curtime.tm_year + 1900) & 0xffff);
 377
 378     return bcd_time;
 379 }
 380
 381 /*
 382  * Default disk sata address
 383  * 0x1221 is the magic number as
 384  * present in real hardware,
 385  * so use it here, too.
 386  */
 387 static uint64_t megasas_get_sata_addr(uint16_t id)
 388 {
 389     uint64_t addr = (0x1221ULL << 48);
 390     return addr & (id << 24);
 391 }
 392
 393 /*
 394  * Frame handling
 395  */
 396 static int megasas_next_index(MegasasState *s, int index, int limit)
 397 {
 398     index++;
 399     if (index == limit) {
 400         index = 0;
 401     }
 402     return index;
 403 }
 404
 405 static MegasasCmd *megasas_lookup_frame(MegasasState *s,
 406     hwaddr frame)
 407 {
 408     MegasasCmd *cmd = NULL;
 409     int num = 0, index;
 410
 411     index = s->reply_queue_head;
 412
 413     while (num < s->fw_cmds) {
 414         if (s->frames[index].pa && s->frames[index].pa == frame) {
 415             cmd = &s->frames[index];
 416             break;
 417         }
 418         index = megasas_next_index(s, index, s->fw_cmds);
 419         num++;
 420     }
 421
 422     return cmd;
 423 }
 424
 425 static MegasasCmd *megasas_next_frame(MegasasState *s,
 426     hwaddr frame)
 427 {
 428     MegasasCmd *cmd = NULL;
 429     int num = 0, index;
 430
 431     cmd = megasas_lookup_frame(s, frame);
 432     if (cmd) {
 433         trace_megasas_qf_found(cmd->index, cmd->pa);
 434         return cmd;
 435     }
 436     index = s->reply_queue_head;
 437     num = 0;
 438     while (num < s->fw_cmds) {
 439         if (!s->frames[index].pa) {
 440             cmd = &s->frames[index];
 441             break;
 442         }
 443         index = megasas_next_index(s, index, s->fw_cmds);
 444         num++;
 445     }
 446     if (!cmd) {
 447         trace_megasas_qf_failed(frame);
 448     }
 449     trace_megasas_qf_new(index, cmd);
 450     return cmd;
 451 }
 452
 453 static MegasasCmd *megasas_enqueue_frame(MegasasState *s,
 454     hwaddr frame, uint64_t context, int count)
 455 {
 456     MegasasCmd *cmd = NULL;
 457     int frame_size = MFI_FRAME_SIZE * 16;
 458     hwaddr frame_size_p = frame_size;
 459
 460     cmd = megasas_next_frame(s, frame);
 461     /* All frames busy */
 462     if (!cmd) {
 463         return NULL;
 464     }
 465     if (!cmd->pa) {
 466         cmd->pa = frame;
 467         /* Map all possible frames */
 468         cmd->frame = cpu_physical_memory_map(frame, &frame_size_p, 0);
 469         if (frame_size_p != frame_size) {
 470             trace_megasas_qf_map_failed(cmd->index, (unsigned long)frame);
 471             if (cmd->frame) {
 472                 cpu_physical_memory_unmap(cmd->frame, frame_size_p, 0, 0);
 473                 cmd->frame = NULL;
 474                 cmd->pa = 0;
 475             }
 476             s->event_count++;
 477             return NULL;
 478         }
 479         cmd->pa_size = frame_size_p;
 480         cmd->context = context;
 481         if (!megasas_use_queue64(s)) {
 482             cmd->context &= (uint64_t)0xFFFFFFFF;
 483         }
 484     }
 485     cmd->count = count;
 486     s->busy++;
 487
 488     trace_megasas_qf_enqueue(cmd->index, cmd->count, cmd->context,
 489                              s->reply_queue_head, s->busy);
 490
 491     return cmd;
 492 }
 493
 494 static void megasas_complete_frame(MegasasState *s, uint64_t context)
 495 {
 496     int tail, queue_offset;
 497
 498     /* Decrement busy count */
 499     s->busy--;
 500
 501     if (s->reply_queue_pa) {
 502         /*
 503          * Put command on the reply queue.
 504          * Context is opaque, but emulation is running in
 505          * little endian. So convert it.
 506          */
 507         tail = s->reply_queue_head;
 508         if (megasas_use_queue64(s)) {
 509             queue_offset = tail * sizeof(uint64_t);
 510             stq_le_phys(s->reply_queue_pa + queue_offset, context);
 511         } else {
 512             queue_offset = tail * sizeof(uint32_t);
 513             stl_le_phys(s->reply_queue_pa + queue_offset, context);
 514         }
 515         s->reply_queue_head = megasas_next_index(s, tail, s->fw_cmds);
 516         trace_megasas_qf_complete(context, tail, queue_offset,
 517                                   s->busy, s->doorbell);
 518     }
 519
 520     if (megasas_intr_enabled(s)) {
 521         /* Notify HBA */
 522         s->doorbell++;
 523         if (s->doorbell == 1) {
 524             if (msix_enabled(&s->dev)) {
 525                 trace_megasas_msix_raise(0);
 526                 msix_notify(&s->dev, 0);
 527             } else {
 528                 trace_megasas_irq_raise();
 529                 qemu_irq_raise(s->dev.irq[0]);
 530             }
 531         }
 532     } else {
 533         trace_megasas_qf_complete_noirq(context);
 534     }
 535 }
 536
 537 static void megasas_reset_frames(MegasasState *s)
 538 {
 539     int i;
 540     MegasasCmd *cmd;
 541
 542     for (i = 0; i < s->fw_cmds; i++) {
 543         cmd = &s->frames[i];
 544         if (cmd->pa) {
 545             cpu_physical_memory_unmap(cmd->frame, cmd->pa_size, 0, 0);
 546             cmd->frame = NULL;
 547             cmd->pa = 0;
 548         }
 549     }
 550 }
 551
 552 static void megasas_abort_command(MegasasCmd *cmd)
 553 {
 554     if (cmd->req) {
 555         scsi_req_cancel(cmd->req);
 556         cmd->req = NULL;
 557     }
 558 }
 559
 560 static int megasas_init_firmware(MegasasState *s, MegasasCmd *cmd)
 561 {
 562     uint32_t pa_hi, pa_lo;
 563     hwaddr iq_pa, initq_size;
 564     struct mfi_init_qinfo *initq;
 565     uint32_t flags;
 566     int ret = MFI_STAT_OK;
 567
 568     pa_lo = le32_to_cpu(cmd->frame->init.qinfo_new_addr_lo);
 569     pa_hi = le32_to_cpu(cmd->frame->init.qinfo_new_addr_hi);
 570     iq_pa = (((uint64_t) pa_hi << 32) | pa_lo);
 571     trace_megasas_init_firmware((uint64_t)iq_pa);
 572     initq_size = sizeof(*initq);
 573     initq = cpu_physical_memory_map(iq_pa, &initq_size, 0);
 574     if (!initq || initq_size != sizeof(*initq)) {
 575         trace_megasas_initq_map_failed(cmd->index);
 576         s->event_count++;
 577         ret = MFI_STAT_MEMORY_NOT_AVAILABLE;
 578         goto out;
 579     }
 580     s->reply_queue_len = le32_to_cpu(initq->rq_entries) & 0xFFFF;
 581     if (s->reply_queue_len > s->fw_cmds) {
 582         trace_megasas_initq_mismatch(s->reply_queue_len, s->fw_cmds);
 583         s->event_count++;
 584         ret = MFI_STAT_INVALID_PARAMETER;
 585         goto out;
 586     }
 587     pa_lo = le32_to_cpu(initq->rq_addr_lo);
 588     pa_hi = le32_to_cpu(initq->rq_addr_hi);
 589     s->reply_queue_pa = ((uint64_t) pa_hi << 32) | pa_lo;
 590     pa_lo = le32_to_cpu(initq->ci_addr_lo);
 591     pa_hi = le32_to_cpu(initq->ci_addr_hi);
 592     s->consumer_pa = ((uint64_t) pa_hi << 32) | pa_lo;
 593     pa_lo = le32_to_cpu(initq->pi_addr_lo);
 594     pa_hi = le32_to_cpu(initq->pi_addr_hi);
 595     s->producer_pa = ((uint64_t) pa_hi << 32) | pa_lo;
 596     s->reply_queue_head = ldl_le_phys(s->producer_pa);
 597     s->reply_queue_tail = ldl_le_phys(s->consumer_pa);
 598     flags = le32_to_cpu(initq->flags);
 599     if (flags & MFI_QUEUE_FLAG_CONTEXT64) {
 600         s->flags |= MEGASAS_MASK_USE_QUEUE64;
 601     }
 602     trace_megasas_init_queue((unsigned long)s->reply_queue_pa,
 603                              s->reply_queue_len, s->reply_queue_head,
 604                              s->reply_queue_tail, flags);
 605     megasas_reset_frames(s);
 606     s->fw_state = MFI_FWSTATE_OPERATIONAL;
 607 out:
 608     if (initq) {
 609         cpu_physical_memory_unmap(initq, initq_size, 0, 0);
 610     }
 611     return ret;
 612 }
 613
 614 static int megasas_map_dcmd(MegasasState *s, MegasasCmd *cmd)
 615 {
 616     dma_addr_t iov_pa, iov_size;
 617
 618     cmd->flags = le16_to_cpu(cmd->frame->header.flags);
 619     if (!cmd->frame->header.sge_count) {
 620         trace_megasas_dcmd_zero_sge(cmd->index);
 621         cmd->iov_size = 0;
 622         return 0;
 623     } else if (cmd->frame->header.sge_count > 1) {
 624         trace_megasas_dcmd_invalid_sge(cmd->index,
 625                                        cmd->frame->header.sge_count);
 626         cmd->iov_size = 0;
 627         return -1;
 628     }
 629     iov_pa = megasas_sgl_get_addr(cmd, &cmd->frame->dcmd.sgl);
 630     iov_size = megasas_sgl_get_len(cmd, &cmd->frame->dcmd.sgl);
 631     qemu_sglist_init(&cmd->qsg, 1, pci_dma_context(&s->dev));
 632     qemu_sglist_add(&cmd->qsg, iov_pa, iov_size);
 633     cmd->iov_size = iov_size;
 634     return cmd->iov_size;
 635 }
 636
 637 static void megasas_finish_dcmd(MegasasCmd *cmd, uint32_t iov_size)
 638 {
 639     trace_megasas_finish_dcmd(cmd->index, iov_size);
 640
 641     if (cmd->frame->header.sge_count) {
 642         qemu_sglist_destroy(&cmd->qsg);
 643     }
 644     if (iov_size > cmd->iov_size) {
 645         if (megasas_frame_is_ieee_sgl(cmd)) {
 646             cmd->frame->dcmd.sgl.sg_skinny->len = cpu_to_le32(iov_size);
 647         } else if (megasas_frame_is_sgl64(cmd)) {
 648             cmd->frame->dcmd.sgl.sg64->len = cpu_to_le32(iov_size);
 649         } else {
 650             cmd->frame->dcmd.sgl.sg32->len = cpu_to_le32(iov_size);
 651         }
 652     }
 653     cmd->iov_size = 0;
 654 }
 655
 656 static int megasas_ctrl_get_info(MegasasState *s, MegasasCmd *cmd)
 657 {
 658     struct mfi_ctrl_info info;
 659     size_t dcmd_size = sizeof(info);
 660     BusChild *kid;
 661     int num_ld_disks = 0;
 662     uint16_t sdev_id;
 663
 664     memset(&info, 0x0, cmd->iov_size);
 665     if (cmd->iov_size < dcmd_size) {
 666         trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
 667                                             dcmd_size);
 668         return MFI_STAT_INVALID_PARAMETER;
 669     }
 670
 671     info.pci.vendor = cpu_to_le16(PCI_VENDOR_ID_LSI_LOGIC);
 672     info.pci.device = cpu_to_le16(PCI_DEVICE_ID_LSI_SAS1078);
 673     info.pci.subvendor = cpu_to_le16(PCI_VENDOR_ID_LSI_LOGIC);
 674     info.pci.subdevice = cpu_to_le16(0x1013);
 675
 676     /*
 677      * For some reason the firmware supports
 678      * only up to 8 device ports.
 679      * Despite supporting a far larger number
 680      * of devices for the physical devices.
 681      * So just display the first 8 devices
 682      * in the device port list, independent
 683      * of how many logical devices are actually
 684      * present.
 685      */
 686     info.host.type = MFI_INFO_HOST_PCIE;
 687     info.device.type = MFI_INFO_DEV_SAS3G;
 688     info.device.port_count = 8;
 689     QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
 690         SCSIDevice *sdev = DO_UPCAST(SCSIDevice, qdev, kid->child);
 691
 692         if (num_ld_disks < 8) {
 693             sdev_id = ((sdev->id & 0xFF) >> 8) | (sdev->lun & 0xFF);
 694             info.device.port_addr[num_ld_disks] =
 695                 cpu_to_le64(megasas_get_sata_addr(sdev_id));
 696         }
 697         num_ld_disks++;
 698     }
 699
 700     memcpy(info.product_name, "MegaRAID SAS 8708EM2", 20);
 701     snprintf(info.serial_number, 32, "%s", s->hba_serial);
 702     snprintf(info.package_version, 0x60, "%s-QEMU", QEMU_VERSION);
 703     memcpy(info.image_component[0].name, "APP", 3);
 704     memcpy(info.image_component[0].version, MEGASAS_VERSION "-QEMU", 9);
 705     memcpy(info.image_component[0].build_date, __DATE__, 11);
 706     memcpy(info.image_component[0].build_time, __TIME__, 8);
 707     info.image_component_count = 1;
 708     if (s->dev.has_rom) {
 709         uint8_t biosver[32];
 710         uint8_t *ptr;
 711
 712         ptr = memory_region_get_ram_ptr(&s->dev.rom);
 713         memcpy(biosver, ptr + 0x41, 31);
 714         qemu_put_ram_ptr(ptr);
 715         memcpy(info.image_component[1].name, "BIOS", 4);
 716         memcpy(info.image_component[1].version, biosver,
 717                strlen((const char *)biosver));
 718         info.image_component_count++;
 719     }
 720     info.current_fw_time = cpu_to_le32(megasas_fw_time());
 721     info.max_arms = 32;
 722     info.max_spans = 8;
 723     info.max_arrays = MEGASAS_MAX_ARRAYS;
 724     info.max_lds = s->fw_luns;
 725     info.max_cmds = cpu_to_le16(s->fw_cmds);
 726     info.max_sg_elements = cpu_to_le16(s->fw_sge);
 727     info.max_request_size = cpu_to_le32(MEGASAS_MAX_SECTORS);
 728     info.lds_present = cpu_to_le16(num_ld_disks);
 729     info.pd_present = cpu_to_le16(num_ld_disks);
 730     info.pd_disks_present = cpu_to_le16(num_ld_disks);
 731     info.hw_present = cpu_to_le32(MFI_INFO_HW_NVRAM |
 732                                    MFI_INFO_HW_MEM |
 733                                    MFI_INFO_HW_FLASH);
 734     info.memory_size = cpu_to_le16(512);
 735     info.nvram_size = cpu_to_le16(32);
 736     info.flash_size = cpu_to_le16(16);
 737     info.raid_levels = cpu_to_le32(MFI_INFO_RAID_0);
 738     info.adapter_ops = cpu_to_le32(MFI_INFO_AOPS_RBLD_RATE |
 739                                     MFI_INFO_AOPS_SELF_DIAGNOSTIC |
 740                                     MFI_INFO_AOPS_MIXED_ARRAY);
 741     info.ld_ops = cpu_to_le32(MFI_INFO_LDOPS_DISK_CACHE_POLICY |
 742                                MFI_INFO_LDOPS_ACCESS_POLICY |
 743                                MFI_INFO_LDOPS_IO_POLICY |
 744                                MFI_INFO_LDOPS_WRITE_POLICY |
 745                                MFI_INFO_LDOPS_READ_POLICY);
 746     info.max_strips_per_io = cpu_to_le16(s->fw_sge);
 747     info.stripe_sz_ops.min = 3;
 748     info.stripe_sz_ops.max = ffs(MEGASAS_MAX_SECTORS + 1) - 1;
 749     info.properties.pred_fail_poll_interval = cpu_to_le16(300);
 750     info.properties.intr_throttle_cnt = cpu_to_le16(16);
 751     info.properties.intr_throttle_timeout = cpu_to_le16(50);
 752     info.properties.rebuild_rate = 30;
 753     info.properties.patrol_read_rate = 30;
 754     info.properties.bgi_rate = 30;
 755     info.properties.cc_rate = 30;
 756     info.properties.recon_rate = 30;
 757     info.properties.cache_flush_interval = 4;
 758     info.properties.spinup_drv_cnt = 2;
 759     info.properties.spinup_delay = 6;
 760     info.properties.ecc_bucket_size = 15;
 761     info.properties.ecc_bucket_leak_rate = cpu_to_le16(1440);
 762     info.properties.expose_encl_devices = 1;
 763     info.properties.OnOffProperties = cpu_to_le32(MFI_CTRL_PROP_EnableJBOD);
 764     info.pd_ops = cpu_to_le32(MFI_INFO_PDOPS_FORCE_ONLINE |
 765                                MFI_INFO_PDOPS_FORCE_OFFLINE);
 766     info.pd_mix_support = cpu_to_le32(MFI_INFO_PDMIX_SAS |
 767                                        MFI_INFO_PDMIX_SATA |
 768                                        MFI_INFO_PDMIX_LD);
 769
 770     cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg);
 771     return MFI_STAT_OK;
 772 }
 773
 774 static int megasas_mfc_get_defaults(MegasasState *s, MegasasCmd *cmd)
 775 {
 776     struct mfi_defaults info;
 777     size_t dcmd_size = sizeof(struct mfi_defaults);
 778
 779     memset(&info, 0x0, dcmd_size);
 780     if (cmd->iov_size < dcmd_size) {
 781         trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
 782                                             dcmd_size);
 783         return MFI_STAT_INVALID_PARAMETER;
 784     }
 785
 786     info.sas_addr = cpu_to_le64(s->sas_addr);
 787     info.stripe_size = 3;
 788     info.flush_time = 4;
 789     info.background_rate = 30;
 790     info.allow_mix_in_enclosure = 1;
 791     info.allow_mix_in_ld = 1;
 792     info.direct_pd_mapping = 1;
 793     /* Enable for BIOS support */
 794     info.bios_enumerate_lds = 1;
 795     info.disable_ctrl_r = 1;
 796     info.expose_enclosure_devices = 1;
 797     info.disable_preboot_cli = 1;
 798     info.cluster_disable = 1;
 799
 800     cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg);
 801     return MFI_STAT_OK;
 802 }
 803
 804 static int megasas_dcmd_get_bios_info(MegasasState *s, MegasasCmd *cmd)
 805 {
 806     struct mfi_bios_data info;
 807     size_t dcmd_size = sizeof(info);
 808
 809     memset(&info, 0x0, dcmd_size);
 810     if (cmd->iov_size < dcmd_size) {
 811         trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
 812                                             dcmd_size);
 813         return MFI_STAT_INVALID_PARAMETER;
 814     }
 815     info.continue_on_error = 1;
 816     info.verbose = 1;
 817     if (megasas_is_jbod(s)) {
 818         info.expose_all_drives = 1;
 819     }
 820
 821     cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg);
 822     return MFI_STAT_OK;
 823 }
 824
 825 static int megasas_dcmd_get_fw_time(MegasasState *s, MegasasCmd *cmd)
 826 {
 827     uint64_t fw_time;
 828     size_t dcmd_size = sizeof(fw_time);
 829
 830     fw_time = cpu_to_le64(megasas_fw_time());
 831
 832     cmd->iov_size -= dma_buf_read((uint8_t *)&fw_time, dcmd_size, &cmd->qsg);
 833     return MFI_STAT_OK;
 834 }
 835
 836 static int megasas_dcmd_set_fw_time(MegasasState *s, MegasasCmd *cmd)
 837 {
 838     uint64_t fw_time;
 839
 840     /* This is a dummy; setting of firmware time is not allowed */
 841     memcpy(&fw_time, cmd->frame->dcmd.mbox, sizeof(fw_time));
 842
 843     trace_megasas_dcmd_set_fw_time(cmd->index, fw_time);
 844     fw_time = cpu_to_le64(megasas_fw_time());
 845     return MFI_STAT_OK;
 846 }
 847
 848 static int megasas_event_info(MegasasState *s, MegasasCmd *cmd)
 849 {
 850     struct mfi_evt_log_state info;
 851     size_t dcmd_size = sizeof(info);
 852
 853     memset(&info, 0, dcmd_size);
 854
 855     info.newest_seq_num = cpu_to_le32(s->event_count);
 856     info.shutdown_seq_num = cpu_to_le32(s->shutdown_event);
 857     info.boot_seq_num = cpu_to_le32(s->boot_event);
 858
 859     cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg);
 860     return MFI_STAT_OK;
 861 }
 862
 863 static int megasas_event_wait(MegasasState *s, MegasasCmd *cmd)
 864 {
 865     union mfi_evt event;
 866
 867     if (cmd->iov_size < sizeof(struct mfi_evt_detail)) {
 868         trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
 869                                             sizeof(struct mfi_evt_detail));
 870         return MFI_STAT_INVALID_PARAMETER;
 871     }
 872     s->event_count = cpu_to_le32(cmd->frame->dcmd.mbox[0]);
 873     event.word = cpu_to_le32(cmd->frame->dcmd.mbox[4]);
 874     s->event_locale = event.members.locale;
 875     s->event_class = event.members.class;
 876     s->event_cmd = cmd;
 877     /* Decrease busy count; event frame doesn't count here */
 878     s->busy--;
 879     cmd->iov_size = sizeof(struct mfi_evt_detail);
 880     return MFI_STAT_INVALID_STATUS;
 881 }
 882
 883 static int megasas_dcmd_pd_get_list(MegasasState *s, MegasasCmd *cmd)
 884 {
 885     struct mfi_pd_list info;
 886     size_t dcmd_size = sizeof(info);
 887     BusChild *kid;
 888     uint32_t offset, dcmd_limit, num_pd_disks = 0, max_pd_disks;
 889     uint16_t sdev_id;
 890
 891     memset(&info, 0, dcmd_size);
 892     offset = 8;
 893     dcmd_limit = offset + sizeof(struct mfi_pd_address);
 894     if (cmd->iov_size < dcmd_limit) {
 895         trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
 896                                             dcmd_limit);
 897         return MFI_STAT_INVALID_PARAMETER;
 898     }
 899
 900     max_pd_disks = (cmd->iov_size - offset) / sizeof(struct mfi_pd_address);
 901     if (max_pd_disks > s->fw_luns) {
 902         max_pd_disks = s->fw_luns;
 903     }
 904
 905     QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
 906         SCSIDevice *sdev = DO_UPCAST(SCSIDevice, qdev, kid->child);
 907
 908         sdev_id = ((sdev->id & 0xFF) >> 8) | (sdev->lun & 0xFF);
 909         info.addr[num_pd_disks].device_id = cpu_to_le16(sdev_id);
 910         info.addr[num_pd_disks].encl_device_id = 0xFFFF;
 911         info.addr[num_pd_disks].encl_index = 0;
 912         info.addr[num_pd_disks].slot_number = (sdev->id & 0xFF);
 913         info.addr[num_pd_disks].scsi_dev_type = sdev->type;
 914         info.addr[num_pd_disks].connect_port_bitmap = 0x1;
 915         info.addr[num_pd_disks].sas_addr[0] =
 916             cpu_to_le64(megasas_get_sata_addr(sdev_id));
 917         num_pd_disks++;
 918         offset += sizeof(struct mfi_pd_address);
 919     }
 920     trace_megasas_dcmd_pd_get_list(cmd->index, num_pd_disks,
 921                                    max_pd_disks, offset);
 922
 923     info.size = cpu_to_le32(offset);
 924     info.count = cpu_to_le32(num_pd_disks);
 925
 926     cmd->iov_size -= dma_buf_read((uint8_t *)&info, offset, &cmd->qsg);
 927     return MFI_STAT_OK;
 928 }
 929
 930 static int megasas_dcmd_pd_list_query(MegasasState *s, MegasasCmd *cmd)
 931 {
 932     uint16_t flags;
 933
 934     /* mbox0 contains flags */
 935     flags = le16_to_cpu(cmd->frame->dcmd.mbox[0]);
 936     trace_megasas_dcmd_pd_list_query(cmd->index, flags);
 937     if (flags == MR_PD_QUERY_TYPE_ALL ||
 938         megasas_is_jbod(s)) {
 939         return megasas_dcmd_pd_get_list(s, cmd);
 940     }
 941
 942     return MFI_STAT_OK;
 943 }
 944
 945 static int megasas_pd_get_info_submit(SCSIDevice *sdev, int lun,
 946                                       MegasasCmd *cmd)
 947 {
 948     struct mfi_pd_info *info = cmd->iov_buf;
 949     size_t dcmd_size = sizeof(struct mfi_pd_info);
 950     BlockConf *conf = &sdev->conf;
 951     uint64_t pd_size;
 952     uint16_t sdev_id = ((sdev->id & 0xFF) >> 8) | (lun & 0xFF);
 953     uint8_t cmdbuf[6];
 954     SCSIRequest *req;
 955     size_t len, resid;
 956
 957     if (!cmd->iov_buf) {
 958         cmd->iov_buf = g_malloc(dcmd_size);
 959         memset(cmd->iov_buf, 0, dcmd_size);
 960         info = cmd->iov_buf;
 961         info->inquiry_data[0] = 0x7f; /* Force PQual 0x3, PType 0x1f */
 962         info->vpd_page83[0] = 0x7f;
 963         megasas_setup_inquiry(cmdbuf, 0, sizeof(info->inquiry_data));
 964         req = scsi_req_new(sdev, cmd->index, lun, cmdbuf, cmd);
 965         if (!req) {
 966             trace_megasas_dcmd_req_alloc_failed(cmd->index,
 967                                                 "PD get info std inquiry");
 968             g_free(cmd->iov_buf);
 969             cmd->iov_buf = NULL;
 970             return MFI_STAT_FLASH_ALLOC_FAIL;
 971         }
 972         trace_megasas_dcmd_internal_submit(cmd->index,
 973                                            "PD get info std inquiry", lun);
 974         len = scsi_req_enqueue(req);
 975         if (len > 0) {
 976             cmd->iov_size = len;
 977             scsi_req_continue(req);
 978         }
 979         return MFI_STAT_INVALID_STATUS;
 980     } else if (info->inquiry_data[0] != 0x7f && info->vpd_page83[0] == 0x7f) {
 981         megasas_setup_inquiry(cmdbuf, 0x83, sizeof(info->vpd_page83));
 982         req = scsi_req_new(sdev, cmd->index, lun, cmdbuf, cmd);
 983         if (!req) {
 984             trace_megasas_dcmd_req_alloc_failed(cmd->index,
 985                                                 "PD get info vpd inquiry");
 986             return MFI_STAT_FLASH_ALLOC_FAIL;
 987         }
 988         trace_megasas_dcmd_internal_submit(cmd->index,
 989                                            "PD get info vpd inquiry", lun);
 990         len = scsi_req_enqueue(req);
 991         if (len > 0) {
 992             cmd->iov_size = len;
 993             scsi_req_continue(req);
 994         }
 995         return MFI_STAT_INVALID_STATUS;
 996     }
 997     /* Finished, set FW state */
 998     if ((info->inquiry_data[0] >> 5) == 0) {
 999         if (megasas_is_jbod(cmd->state)) {
1000             info->fw_state = cpu_to_le16(MFI_PD_STATE_SYSTEM);
1001         } else {
1002             info->fw_state = cpu_to_le16(MFI_PD_STATE_ONLINE);
1003         }
1004     } else {
1005         info->fw_state = cpu_to_le16(MFI_PD_STATE_OFFLINE);
1006     }
1007
1008     info->ref.v.device_id = cpu_to_le16(sdev_id);
1009     info->state.ddf.pd_type = cpu_to_le16(MFI_PD_DDF_TYPE_IN_VD|
1010                                           MFI_PD_DDF_TYPE_INTF_SAS);
1011     bdrv_get_geometry(conf->bs, &pd_size);
1012     info->raw_size = cpu_to_le64(pd_size);
1013     info->non_coerced_size = cpu_to_le64(pd_size);
1014     info->coerced_size = cpu_to_le64(pd_size);
1015     info->encl_device_id = 0xFFFF;
1016     info->slot_number = (sdev->id & 0xFF);
1017     info->path_info.count = 1;
1018     info->path_info.sas_addr[0] =
1019         cpu_to_le64(megasas_get_sata_addr(sdev_id));
1020     info->connected_port_bitmap = 0x1;
1021     info->device_speed = 1;
1022     info->link_speed = 1;
1023     resid = dma_buf_read(cmd->iov_buf, dcmd_size, &cmd->qsg);
1024     g_free(cmd->iov_buf);
1025     cmd->iov_size = dcmd_size - resid;
1026     cmd->iov_buf = NULL;
1027     return MFI_STAT_OK;
1028 }
1029
1030 static int megasas_dcmd_pd_get_info(MegasasState *s, MegasasCmd *cmd)
1031 {
1032     size_t dcmd_size = sizeof(struct mfi_pd_info);
1033     uint16_t pd_id;
1034     SCSIDevice *sdev = NULL;
1035     int retval = MFI_STAT_DEVICE_NOT_FOUND;
1036
1037     if (cmd->iov_size < dcmd_size) {
1038         return MFI_STAT_INVALID_PARAMETER;
1039     }
1040
1041     /* mbox0 has the ID */
1042     pd_id = le16_to_cpu(cmd->frame->dcmd.mbox[0]);
1043     sdev = scsi_device_find(&s->bus, 0, pd_id, 0);
1044     trace_megasas_dcmd_pd_get_info(cmd->index, pd_id);
1045
1046     if (sdev) {
1047         /* Submit inquiry */
1048         retval = megasas_pd_get_info_submit(sdev, pd_id, cmd);
1049     }
1050
1051     return retval;
1052 }
1053
1054 static int megasas_dcmd_ld_get_list(MegasasState *s, MegasasCmd *cmd)
1055 {
1056     struct mfi_ld_list info;
1057     size_t dcmd_size = sizeof(info), resid;
1058     uint32_t num_ld_disks = 0, max_ld_disks = s->fw_luns;
1059     uint64_t ld_size;
1060     BusChild *kid;
1061
1062     memset(&info, 0, dcmd_size);
1063     if (cmd->iov_size < dcmd_size) {
1064         trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
1065                                             dcmd_size);
1066         return MFI_STAT_INVALID_PARAMETER;
1067     }
1068
1069     if (megasas_is_jbod(s)) {
1070         max_ld_disks = 0;
1071     }
1072     QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
1073         SCSIDevice *sdev = DO_UPCAST(SCSIDevice, qdev, kid->child);
1074         BlockConf *conf = &sdev->conf;
1075
1076         if (num_ld_disks >= max_ld_disks) {
1077             break;
1078         }
1079         /* Logical device size is in blocks */
1080         bdrv_get_geometry(conf->bs, &ld_size);
1081         info.ld_list[num_ld_disks].ld.v.target_id = sdev->id;
1082         info.ld_list[num_ld_disks].ld.v.lun_id = sdev->lun;
1083         info.ld_list[num_ld_disks].state = MFI_LD_STATE_OPTIMAL;
1084         info.ld_list[num_ld_disks].size = cpu_to_le64(ld_size);
1085         num_ld_disks++;
1086     }
1087     info.ld_count = cpu_to_le32(num_ld_disks);
1088     trace_megasas_dcmd_ld_get_list(cmd->index, num_ld_disks, max_ld_disks);
1089
1090     resid = dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg);
1091     cmd->iov_size = dcmd_size - resid;
1092     return MFI_STAT_OK;
1093 }
1094
1095 static int megasas_ld_get_info_submit(SCSIDevice *sdev, int lun,
1096                                       MegasasCmd *cmd)
1097 {
1098     struct mfi_ld_info *info = cmd->iov_buf;
1099     size_t dcmd_size = sizeof(struct mfi_ld_info);
1100     uint8_t cdb[6];
1101     SCSIRequest *req;
1102     ssize_t len, resid;
1103     BlockConf *conf = &sdev->conf;
1104     uint16_t sdev_id = ((sdev->id & 0xFF) >> 8) | (lun & 0xFF);
1105     uint64_t ld_size;
1106
1107     if (!cmd->iov_buf) {
1108         cmd->iov_buf = g_malloc(dcmd_size);
1109         memset(cmd->iov_buf, 0x0, dcmd_size);
1110         info = cmd->iov_buf;
1111         megasas_setup_inquiry(cdb, 0x83, sizeof(info->vpd_page83));
1112         req = scsi_req_new(sdev, cmd->index, lun, cdb, cmd);
1113         if (!req) {
1114             trace_megasas_dcmd_req_alloc_failed(cmd->index,
1115                                                 "LD get info vpd inquiry");
1116             g_free(cmd->iov_buf);
1117             cmd->iov_buf = NULL;
1118             return MFI_STAT_FLASH_ALLOC_FAIL;
1119         }
1120         trace_megasas_dcmd_internal_submit(cmd->index,
1121                                            "LD get info vpd inquiry", lun);
1122         len = scsi_req_enqueue(req);
1123         if (len > 0) {
1124             cmd->iov_size = len;
1125             scsi_req_continue(req);
1126         }
1127         return MFI_STAT_INVALID_STATUS;
1128     }
1129
1130     info->ld_config.params.state = MFI_LD_STATE_OPTIMAL;
1131     info->ld_config.properties.ld.v.target_id = lun;
1132     info->ld_config.params.stripe_size = 3;
1133     info->ld_config.params.num_drives = 1;
1134     info->ld_config.params.is_consistent = 1;
1135     /* Logical device size is in blocks */
1136     bdrv_get_geometry(conf->bs, &ld_size);
1137     info->size = cpu_to_le64(ld_size);
1138     memset(info->ld_config.span, 0, sizeof(info->ld_config.span));
1139     info->ld_config.span[0].start_block = 0;
1140     info->ld_config.span[0].num_blocks = info->size;
1141     info->ld_config.span[0].array_ref = cpu_to_le16(sdev_id);
1142
1143     resid = dma_buf_read(cmd->iov_buf, dcmd_size, &cmd->qsg);
1144     g_free(cmd->iov_buf);
1145     cmd->iov_size = dcmd_size - resid;
1146     cmd->iov_buf = NULL;
1147     return MFI_STAT_OK;
1148 }
1149
1150 static int megasas_dcmd_ld_get_info(MegasasState *s, MegasasCmd *cmd)
1151 {
1152     struct mfi_ld_info info;
1153     size_t dcmd_size = sizeof(info);
1154     uint16_t ld_id;
1155     uint32_t max_ld_disks = s->fw_luns;
1156     SCSIDevice *sdev = NULL;
1157     int retval = MFI_STAT_DEVICE_NOT_FOUND;
1158
1159     if (cmd->iov_size < dcmd_size) {
1160         return MFI_STAT_INVALID_PARAMETER;
1161     }
1162
1163     /* mbox0 has the ID */
1164     ld_id = le16_to_cpu(cmd->frame->dcmd.mbox[0]);
1165     trace_megasas_dcmd_ld_get_info(cmd->index, ld_id);
1166
1167     if (megasas_is_jbod(s)) {
1168         return MFI_STAT_DEVICE_NOT_FOUND;
1169     }
1170
1171     if (ld_id < max_ld_disks) {
1172         sdev = scsi_device_find(&s->bus, 0, ld_id, 0);
1173     }
1174
1175     if (sdev) {
1176         retval = megasas_ld_get_info_submit(sdev, ld_id, cmd);
1177     }
1178
1179     return retval;
1180 }
1181
1182 static int megasas_dcmd_cfg_read(MegasasState *s, MegasasCmd *cmd)
1183 {
1184     uint8_t data[4096];
1185     struct mfi_config_data *info;
1186     int num_pd_disks = 0, array_offset, ld_offset;
1187     BusChild *kid;
1188
1189     if (cmd->iov_size > 4096) {
1190         return MFI_STAT_INVALID_PARAMETER;
1191     }
1192
1193     QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
1194         num_pd_disks++;
1195     }
1196     info = (struct mfi_config_data *)&data;
1197     /*
1198      * Array mapping:
1199      * - One array per SCSI device
1200      * - One logical drive per SCSI device
1201      *   spanning the entire device
1202      */
1203     info->array_count = num_pd_disks;
1204     info->array_size = sizeof(struct mfi_array) * num_pd_disks;
1205     info->log_drv_count = num_pd_disks;
1206     info->log_drv_size = sizeof(struct mfi_ld_config) * num_pd_disks;
1207     info->spares_count = 0;
1208     info->spares_size = sizeof(struct mfi_spare);
1209     info->size = sizeof(struct mfi_config_data) + info->array_size +
1210         info->log_drv_size;
1211     if (info->size > 4096) {
1212         return MFI_STAT_INVALID_PARAMETER;
1213     }
1214
1215     array_offset = sizeof(struct mfi_config_data);
1216     ld_offset = array_offset + sizeof(struct mfi_array) * num_pd_disks;
1217
1218     QTAILQ_FOREACH(kid, &s->bus.qbus.children, sibling) {
1219         SCSIDevice *sdev = DO_UPCAST(SCSIDevice, qdev, kid->child);
1220         BlockConf *conf = &sdev->conf;
1221         uint16_t sdev_id = ((sdev->id & 0xFF) >> 8) | (sdev->lun & 0xFF);
1222         struct mfi_array *array;
1223         struct mfi_ld_config *ld;
1224         uint64_t pd_size;
1225         int i;
1226
1227         array = (struct mfi_array *)(data + array_offset);
1228         bdrv_get_geometry(conf->bs, &pd_size);
1229         array->size = cpu_to_le64(pd_size);
1230         array->num_drives = 1;
1231         array->array_ref = cpu_to_le16(sdev_id);
1232         array->pd[0].ref.v.device_id = cpu_to_le16(sdev_id);
1233         array->pd[0].ref.v.seq_num = 0;
1234         array->pd[0].fw_state = MFI_PD_STATE_ONLINE;
1235         array->pd[0].encl.pd = 0xFF;
1236         array->pd[0].encl.slot = (sdev->id & 0xFF);
1237         for (i = 1; i < MFI_MAX_ROW_SIZE; i++) {
1238             array->pd[i].ref.v.device_id = 0xFFFF;
1239             array->pd[i].ref.v.seq_num = 0;
1240             array->pd[i].fw_state = MFI_PD_STATE_UNCONFIGURED_GOOD;
1241             array->pd[i].encl.pd = 0xFF;
1242             array->pd[i].encl.slot = 0xFF;
1243         }
1244         array_offset += sizeof(struct mfi_array);
1245         ld = (struct mfi_ld_config *)(data + ld_offset);
1246         memset(ld, 0, sizeof(struct mfi_ld_config));
1247         ld->properties.ld.v.target_id = (sdev->id & 0xFF);
1248         ld->properties.default_cache_policy = MR_LD_CACHE_READ_AHEAD |
1249             MR_LD_CACHE_READ_ADAPTIVE;
1250         ld->properties.current_cache_policy = MR_LD_CACHE_READ_AHEAD |
1251             MR_LD_CACHE_READ_ADAPTIVE;
1252         ld->params.state = MFI_LD_STATE_OPTIMAL;
1253         ld->params.stripe_size = 3;
1254         ld->params.num_drives = 1;
1255         ld->params.span_depth = 1;
1256         ld->params.is_consistent = 1;
1257         ld->span[0].start_block = 0;
1258         ld->span[0].num_blocks = cpu_to_le64(pd_size);
1259         ld->span[0].array_ref = cpu_to_le16(sdev_id);
1260         ld_offset += sizeof(struct mfi_ld_config);
1261     }
1262
1263     cmd->iov_size -= dma_buf_read((uint8_t *)data, info->size, &cmd->qsg);
1264     return MFI_STAT_OK;
1265 }
1266
1267 static int megasas_dcmd_get_properties(MegasasState *s, MegasasCmd *cmd)
1268 {
1269     struct mfi_ctrl_props info;
1270     size_t dcmd_size = sizeof(info);
1271
1272     memset(&info, 0x0, dcmd_size);
1273     if (cmd->iov_size < dcmd_size) {
1274         trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
1275                                             dcmd_size);
1276         return MFI_STAT_INVALID_PARAMETER;
1277     }
1278     info.pred_fail_poll_interval = cpu_to_le16(300);
1279     info.intr_throttle_cnt = cpu_to_le16(16);
1280     info.intr_throttle_timeout = cpu_to_le16(50);
1281     info.rebuild_rate = 30;
1282     info.patrol_read_rate = 30;
1283     info.bgi_rate = 30;
1284     info.cc_rate = 30;
1285     info.recon_rate = 30;
1286     info.cache_flush_interval = 4;
1287     info.spinup_drv_cnt = 2;
1288     info.spinup_delay = 6;
1289     info.ecc_bucket_size = 15;
1290     info.ecc_bucket_leak_rate = cpu_to_le16(1440);
1291     info.expose_encl_devices = 1;
1292
1293     cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg);
1294     return MFI_STAT_OK;
1295 }
1296
1297 static int megasas_cache_flush(MegasasState *s, MegasasCmd *cmd)
1298 {
1299     bdrv_drain_all();
1300     return MFI_STAT_OK;
1301 }
1302
1303 static int megasas_ctrl_shutdown(MegasasState *s, MegasasCmd *cmd)
1304 {
1305     s->fw_state = MFI_FWSTATE_READY;
1306     return MFI_STAT_OK;
1307 }
1308
1309 static int megasas_cluster_reset_ld(MegasasState *s, MegasasCmd *cmd)
1310 {
1311     return MFI_STAT_INVALID_DCMD;
1312 }
1313
1314 static int megasas_dcmd_set_properties(MegasasState *s, MegasasCmd *cmd)
1315 {
1316     struct mfi_ctrl_props info;
1317     size_t dcmd_size = sizeof(info);
1318
1319     if (cmd->iov_size < dcmd_size) {
1320         trace_megasas_dcmd_invalid_xfer_len(cmd->index, cmd->iov_size,
1321                                             dcmd_size);
1322         return MFI_STAT_INVALID_PARAMETER;
1323     }
1324     dma_buf_write((uint8_t *)&info, cmd->iov_size, &cmd->qsg);
1325     trace_megasas_dcmd_unsupported(cmd->index, cmd->iov_size);
1326     return MFI_STAT_OK;
1327 }
1328
1329 static int megasas_dcmd_dummy(MegasasState *s, MegasasCmd *cmd)
1330 {
1331     trace_megasas_dcmd_dummy(cmd->index, cmd->iov_size);
1332     return MFI_STAT_OK;
1333 }
1334
1335 static const struct dcmd_cmd_tbl_t {
1336     int opcode;
1337     const char *desc;
1338     int (*func)(MegasasState *s, MegasasCmd *cmd);
1339 } dcmd_cmd_tbl[] = {
1340     { MFI_DCMD_CTRL_MFI_HOST_MEM_ALLOC, "CTRL_HOST_MEM_ALLOC",
1341       megasas_dcmd_dummy },
1342     { MFI_DCMD_CTRL_GET_INFO, "CTRL_GET_INFO",
1343       megasas_ctrl_get_info },
1344     { MFI_DCMD_CTRL_GET_PROPERTIES, "CTRL_GET_PROPERTIES",
1345       megasas_dcmd_get_properties },
1346     { MFI_DCMD_CTRL_SET_PROPERTIES, "CTRL_SET_PROPERTIES",
1347       megasas_dcmd_set_properties },
1348     { MFI_DCMD_CTRL_ALARM_GET, "CTRL_ALARM_GET",
1349       megasas_dcmd_dummy },
1350     { MFI_DCMD_CTRL_ALARM_ENABLE, "CTRL_ALARM_ENABLE",
1351       megasas_dcmd_dummy },
1352     { MFI_DCMD_CTRL_ALARM_DISABLE, "CTRL_ALARM_DISABLE",
1353       megasas_dcmd_dummy },
1354     { MFI_DCMD_CTRL_ALARM_SILENCE, "CTRL_ALARM_SILENCE",
1355       megasas_dcmd_dummy },
1356     { MFI_DCMD_CTRL_ALARM_TEST, "CTRL_ALARM_TEST",
1357       megasas_dcmd_dummy },
1358     { MFI_DCMD_CTRL_EVENT_GETINFO, "CTRL_EVENT_GETINFO",
1359       megasas_event_info },
1360     { MFI_DCMD_CTRL_EVENT_GET, "CTRL_EVENT_GET",
1361       megasas_dcmd_dummy },
1362     { MFI_DCMD_CTRL_EVENT_WAIT, "CTRL_EVENT_WAIT",
1363       megasas_event_wait },
1364     { MFI_DCMD_CTRL_SHUTDOWN, "CTRL_SHUTDOWN",
1365       megasas_ctrl_shutdown },
1366     { MFI_DCMD_HIBERNATE_STANDBY, "CTRL_STANDBY",
1367       megasas_dcmd_dummy },
1368     { MFI_DCMD_CTRL_GET_TIME, "CTRL_GET_TIME",
1369       megasas_dcmd_get_fw_time },
1370     { MFI_DCMD_CTRL_SET_TIME, "CTRL_SET_TIME",
1371       megasas_dcmd_set_fw_time },
1372     { MFI_DCMD_CTRL_BIOS_DATA_GET, "CTRL_BIOS_DATA_GET",
1373       megasas_dcmd_get_bios_info },
1374     { MFI_DCMD_CTRL_FACTORY_DEFAULTS, "CTRL_FACTORY_DEFAULTS",
1375       megasas_dcmd_dummy },
1376     { MFI_DCMD_CTRL_MFC_DEFAULTS_GET, "CTRL_MFC_DEFAULTS_GET",
1377       megasas_mfc_get_defaults },
1378     { MFI_DCMD_CTRL_MFC_DEFAULTS_SET, "CTRL_MFC_DEFAULTS_SET",
1379       megasas_dcmd_dummy },
1380     { MFI_DCMD_CTRL_CACHE_FLUSH, "CTRL_CACHE_FLUSH",
1381       megasas_cache_flush },
1382     { MFI_DCMD_PD_GET_LIST, "PD_GET_LIST",
1383       megasas_dcmd_pd_get_list },
1384     { MFI_DCMD_PD_LIST_QUERY, "PD_LIST_QUERY",
1385       megasas_dcmd_pd_list_query },
1386     { MFI_DCMD_PD_GET_INFO, "PD_GET_INFO",
1387       megasas_dcmd_pd_get_info },
1388     { MFI_DCMD_PD_STATE_SET, "PD_STATE_SET",
1389       megasas_dcmd_dummy },
1390     { MFI_DCMD_PD_REBUILD, "PD_REBUILD",
1391       megasas_dcmd_dummy },
1392     { MFI_DCMD_PD_BLINK, "PD_BLINK",
1393       megasas_dcmd_dummy },
1394     { MFI_DCMD_PD_UNBLINK, "PD_UNBLINK",
1395       megasas_dcmd_dummy },
1396     { MFI_DCMD_LD_GET_LIST, "LD_GET_LIST",
1397       megasas_dcmd_ld_get_list},
1398     { MFI_DCMD_LD_GET_INFO, "LD_GET_INFO",
1399       megasas_dcmd_ld_get_info },
1400     { MFI_DCMD_LD_GET_PROP, "LD_GET_PROP",
1401       megasas_dcmd_dummy },
1402     { MFI_DCMD_LD_SET_PROP, "LD_SET_PROP",
1403       megasas_dcmd_dummy },
1404     { MFI_DCMD_LD_DELETE, "LD_DELETE",
1405       megasas_dcmd_dummy },
1406     { MFI_DCMD_CFG_READ, "CFG_READ",
1407       megasas_dcmd_cfg_read },
1408     { MFI_DCMD_CFG_ADD, "CFG_ADD",
1409       megasas_dcmd_dummy },
1410     { MFI_DCMD_CFG_CLEAR, "CFG_CLEAR",
1411       megasas_dcmd_dummy },
1412     { MFI_DCMD_CFG_FOREIGN_READ, "CFG_FOREIGN_READ",
1413       megasas_dcmd_dummy },
1414     { MFI_DCMD_CFG_FOREIGN_IMPORT, "CFG_FOREIGN_IMPORT",
1415       megasas_dcmd_dummy },
1416     { MFI_DCMD_BBU_STATUS, "BBU_STATUS",
1417       megasas_dcmd_dummy },
1418     { MFI_DCMD_BBU_CAPACITY_INFO, "BBU_CAPACITY_INFO",
1419       megasas_dcmd_dummy },
1420     { MFI_DCMD_BBU_DESIGN_INFO, "BBU_DESIGN_INFO",
1421       megasas_dcmd_dummy },
1422     { MFI_DCMD_BBU_PROP_GET, "BBU_PROP_GET",
1423       megasas_dcmd_dummy },
1424     { MFI_DCMD_CLUSTER, "CLUSTER",
1425       megasas_dcmd_dummy },
1426     { MFI_DCMD_CLUSTER_RESET_ALL, "CLUSTER_RESET_ALL",
1427       megasas_dcmd_dummy },
1428     { MFI_DCMD_CLUSTER_RESET_LD, "CLUSTER_RESET_LD",
1429       megasas_cluster_reset_ld },
1430     { -1, NULL, NULL }
1431 };
1432
1433 static int megasas_handle_dcmd(MegasasState *s, MegasasCmd *cmd)
1434 {
1435     int opcode, len;
1436     int retval = 0;
1437     const struct dcmd_cmd_tbl_t *cmdptr = dcmd_cmd_tbl;
1438
1439     opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
1440     trace_megasas_handle_dcmd(cmd->index, opcode);
1441     len = megasas_map_dcmd(s, cmd);
1442     if (len < 0) {
1443         return MFI_STAT_MEMORY_NOT_AVAILABLE;
1444     }
1445     while (cmdptr->opcode != -1 && cmdptr->opcode != opcode) {
1446         cmdptr++;
1447     }
1448     if (cmdptr->opcode == -1) {
1449         trace_megasas_dcmd_unhandled(cmd->index, opcode, len);
1450         retval = megasas_dcmd_dummy(s, cmd);
1451     } else {
1452         trace_megasas_dcmd_enter(cmd->index, cmdptr->desc, len);
1453         retval = cmdptr->func(s, cmd);
1454     }
1455     if (retval != MFI_STAT_INVALID_STATUS) {
1456         megasas_finish_dcmd(cmd, len);
1457     }
1458     return retval;
1459 }
1460
1461 static int megasas_finish_internal_dcmd(MegasasCmd *cmd,
1462                                         SCSIRequest *req)
1463 {
1464     int opcode;
1465     int retval = MFI_STAT_OK;
1466     int lun = req->lun;
1467
1468     opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
1469     scsi_req_unref(req);
1470     trace_megasas_dcmd_internal_finish(cmd->index, opcode, lun);
1471     switch (opcode) {
1472     case MFI_DCMD_PD_GET_INFO:
1473         retval = megasas_pd_get_info_submit(req->dev, lun, cmd);
1474         break;
1475     case MFI_DCMD_LD_GET_INFO:
1476         retval = megasas_ld_get_info_submit(req->dev, lun, cmd);
1477         break;
1478     default:
1479         trace_megasas_dcmd_internal_invalid(cmd->index, opcode);
1480         retval = MFI_STAT_INVALID_DCMD;
1481         break;
1482     }
1483     if (retval != MFI_STAT_INVALID_STATUS) {
1484         megasas_finish_dcmd(cmd, cmd->iov_size);
1485     }
1486     return retval;
1487 }
1488
1489 static int megasas_enqueue_req(MegasasCmd *cmd, bool is_write)
1490 {
1491     int len;
1492
1493     len = scsi_req_enqueue(cmd->req);
1494     if (len < 0) {
1495         len = -len;
1496     }
1497     if (len > 0) {
1498         if (len > cmd->iov_size) {
1499             if (is_write) {
1500                 trace_megasas_iov_write_overflow(cmd->index, len,
1501                                                  cmd->iov_size);
1502             } else {
1503                 trace_megasas_iov_read_overflow(cmd->index, len,
1504                                                 cmd->iov_size);
1505             }
1506         }
1507         if (len < cmd->iov_size) {
1508             if (is_write) {
1509                 trace_megasas_iov_write_underflow(cmd->index, len,
1510                                                   cmd->iov_size);
1511             } else {
1512                 trace_megasas_iov_read_underflow(cmd->index, len,
1513                                                  cmd->iov_size);
1514             }
1515             cmd->iov_size = len;
1516         }
1517         scsi_req_continue(cmd->req);
1518     }
1519     return len;
1520 }
1521
1522 static int megasas_handle_scsi(MegasasState *s, MegasasCmd *cmd,
1523                                bool is_logical)
1524 {
1525     uint8_t *cdb;
1526     int len;
1527     bool is_write;
1528     struct SCSIDevice *sdev = NULL;
1529
1530     cdb = cmd->frame->pass.cdb;
1531
1532     if (cmd->frame->header.target_id < s->fw_luns) {
1533         sdev = scsi_device_find(&s->bus, 0, cmd->frame->header.target_id,
1534                                 cmd->frame->header.lun_id);
1535     }
1536     cmd->iov_size = le32_to_cpu(cmd->frame->header.data_len);
1537     trace_megasas_handle_scsi(mfi_frame_desc[cmd->frame->header.frame_cmd],
1538                               is_logical, cmd->frame->header.target_id,
1539                               cmd->frame->header.lun_id, sdev, cmd->iov_size);
1540
1541     if (!sdev || (megasas_is_jbod(s) && is_logical)) {
1542         trace_megasas_scsi_target_not_present(
1543             mfi_frame_desc[cmd->frame->header.frame_cmd], is_logical,
1544             cmd->frame->header.target_id, cmd->frame->header.lun_id);
1545         return MFI_STAT_DEVICE_NOT_FOUND;
1546     }
1547
1548     if (cmd->frame->header.cdb_len > 16) {
1549         trace_megasas_scsi_invalid_cdb_len(
1550                 mfi_frame_desc[cmd->frame->header.frame_cmd], is_logical,
1551                 cmd->frame->header.target_id, cmd->frame->header.lun_id,
1552                 cmd->frame->header.cdb_len);
1553         megasas_write_sense(cmd, SENSE_CODE(INVALID_OPCODE));
1554         cmd->frame->header.scsi_status = CHECK_CONDITION;
1555         s->event_count++;
1556         return MFI_STAT_SCSI_DONE_WITH_ERROR;
1557     }
1558
1559     if (megasas_map_sgl(s, cmd, &cmd->frame->pass.sgl)) {
1560         megasas_write_sense(cmd, SENSE_CODE(TARGET_FAILURE));
1561         cmd->frame->header.scsi_status = CHECK_CONDITION;
1562         s->event_count++;
1563         return MFI_STAT_SCSI_DONE_WITH_ERROR;
1564     }
1565
1566     cmd->req = scsi_req_new(sdev, cmd->index,
1567                             cmd->frame->header.lun_id, cdb, cmd);
1568     if (!cmd->req) {
1569         trace_megasas_scsi_req_alloc_failed(
1570                 mfi_frame_desc[cmd->frame->header.frame_cmd],
1571                 cmd->frame->header.target_id, cmd->frame->header.lun_id);
1572         megasas_write_sense(cmd, SENSE_CODE(NO_SENSE));
1573         cmd->frame->header.scsi_status = BUSY;
1574         s->event_count++;
1575         return MFI_STAT_SCSI_DONE_WITH_ERROR;
1576     }
1577
1578     is_write = (cmd->req->cmd.mode == SCSI_XFER_TO_DEV);
1579     len = megasas_enqueue_req(cmd, is_write);
1580     if (len > 0) {
1581         if (is_write) {
1582             trace_megasas_scsi_write_start(cmd->index, len);
1583         } else {
1584             trace_megasas_scsi_read_start(cmd->index, len);
1585         }
1586     } else {
1587         trace_megasas_scsi_nodata(cmd->index);
1588     }
1589     return MFI_STAT_INVALID_STATUS;
1590 }
1591
1592 static int megasas_handle_io(MegasasState *s, MegasasCmd *cmd)
1593 {
1594     uint32_t lba_count, lba_start_hi, lba_start_lo;
1595     uint64_t lba_start;
1596     bool is_write = (cmd->frame->header.frame_cmd == MFI_CMD_LD_WRITE);
1597     uint8_t cdb[16];
1598     int len;
1599     struct SCSIDevice *sdev = NULL;
1600
1601     lba_count = le32_to_cpu(cmd->frame->io.header.data_len);
1602     lba_start_lo = le32_to_cpu(cmd->frame->io.lba_lo);
1603     lba_start_hi = le32_to_cpu(cmd->frame->io.lba_hi);
1604     lba_start = ((uint64_t)lba_start_hi << 32) | lba_start_lo;
1605
1606     if (cmd->frame->header.target_id < s->fw_luns) {
1607         sdev = scsi_device_find(&s->bus, 0, cmd->frame->header.target_id,
1608                                 cmd->frame->header.lun_id);
1609     }
1610
1611     trace_megasas_handle_io(cmd->index,
1612                             mfi_frame_desc[cmd->frame->header.frame_cmd],
1613                             cmd->frame->header.target_id,
1614                             cmd->frame->header.lun_id,
1615                             (unsigned long)lba_start, (unsigned long)lba_count);
1616     if (!sdev) {
1617         trace_megasas_io_target_not_present(cmd->index,
1618             mfi_frame_desc[cmd->frame->header.frame_cmd],
1619             cmd->frame->header.target_id, cmd->frame->header.lun_id);
1620         return MFI_STAT_DEVICE_NOT_FOUND;
1621     }
1622
1623     if (cmd->frame->header.cdb_len > 16) {
1624         trace_megasas_scsi_invalid_cdb_len(
1625             mfi_frame_desc[cmd->frame->header.frame_cmd], 1,
1626             cmd->frame->header.target_id, cmd->frame->header.lun_id,
1627             cmd->frame->header.cdb_len);
1628         megasas_write_sense(cmd, SENSE_CODE(INVALID_OPCODE));
1629         cmd->frame->header.scsi_status = CHECK_CONDITION;
1630         s->event_count++;
1631         return MFI_STAT_SCSI_DONE_WITH_ERROR;
1632     }
1633
1634     cmd->iov_size = lba_count * sdev->blocksize;
1635     if (megasas_map_sgl(s, cmd, &cmd->frame->io.sgl)) {
1636         megasas_write_sense(cmd, SENSE_CODE(TARGET_FAILURE));
1637         cmd->frame->header.scsi_status = CHECK_CONDITION;
1638         s->event_count++;
1639         return MFI_STAT_SCSI_DONE_WITH_ERROR;
1640     }
1641
1642     megasas_encode_lba(cdb, lba_start, lba_count, is_write);
1643     cmd->req = scsi_req_new(sdev, cmd->index,
1644                             cmd->frame->header.lun_id, cdb, cmd);
1645     if (!cmd->req) {
1646         trace_megasas_scsi_req_alloc_failed(
1647             mfi_frame_desc[cmd->frame->header.frame_cmd],
1648             cmd->frame->header.target_id, cmd->frame->header.lun_id);
1649         megasas_write_sense(cmd, SENSE_CODE(NO_SENSE));
1650         cmd->frame->header.scsi_status = BUSY;
1651         s->event_count++;
1652         return MFI_STAT_SCSI_DONE_WITH_ERROR;
1653     }
1654     len = megasas_enqueue_req(cmd, is_write);
1655     if (len > 0) {
1656         if (is_write) {
1657             trace_megasas_io_write_start(cmd->index, lba_start, lba_count, len);
1658         } else {
1659             trace_megasas_io_read_start(cmd->index, lba_start, lba_count, len);
1660         }
1661     }
1662     return MFI_STAT_INVALID_STATUS;
1663 }
1664
1665 static int megasas_finish_internal_command(MegasasCmd *cmd,
1666                                            SCSIRequest *req, size_t resid)
1667 {
1668     int retval = MFI_STAT_INVALID_CMD;
1669
1670     if (cmd->frame->header.frame_cmd == MFI_CMD_DCMD) {
1671         cmd->iov_size -= resid;
1672         retval = megasas_finish_internal_dcmd(cmd, req);
1673     }
1674     return retval;
1675 }
1676
1677 static QEMUSGList *megasas_get_sg_list(SCSIRequest *req)
1678 {
1679     MegasasCmd *cmd = req->hba_private;
1680
1681     if (cmd->frame->header.frame_cmd == MFI_CMD_DCMD) {
1682         return NULL;
1683     } else {
1684         return &cmd->qsg;
1685     }
1686 }
1687
1688 static void megasas_xfer_complete(SCSIRequest *req, uint32_t len)
1689 {
1690     MegasasCmd *cmd = req->hba_private;
1691     uint8_t *buf;
1692     uint32_t opcode;
1693
1694     trace_megasas_io_complete(cmd->index, len);
1695
1696     if (cmd->frame->header.frame_cmd != MFI_CMD_DCMD) {
1697         scsi_req_continue(req);
1698         return;
1699     }
1700
1701     buf = scsi_req_get_buf(req);
1702     opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
1703     if (opcode == MFI_DCMD_PD_GET_INFO && cmd->iov_buf) {
1704         struct mfi_pd_info *info = cmd->iov_buf;
1705
1706         if (info->inquiry_data[0] == 0x7f) {
1707             memset(info->inquiry_data, 0, sizeof(info->inquiry_data));
1708             memcpy(info->inquiry_data, buf, len);
1709         } else if (info->vpd_page83[0] == 0x7f) {
1710             memset(info->vpd_page83, 0, sizeof(info->vpd_page83));
1711             memcpy(info->vpd_page83, buf, len);
1712         }
1713         scsi_req_continue(req);
1714     } else if (opcode == MFI_DCMD_LD_GET_INFO) {
1715         struct mfi_ld_info *info = cmd->iov_buf;
1716
1717         if (cmd->iov_buf) {
1718             memcpy(info->vpd_page83, buf, sizeof(info->vpd_page83));
1719             scsi_req_continue(req);
1720         }
1721     }
1722 }
1723
1724 static void megasas_command_complete(SCSIRequest *req, uint32_t status,
1725                                      size_t resid)
1726 {
1727     MegasasCmd *cmd = req->hba_private;
1728     uint8_t cmd_status = MFI_STAT_OK;
1729
1730     trace_megasas_command_complete(cmd->index, status, resid);
1731
1732     if (cmd->req != req) {
1733         /*
1734          * Internal command complete
1735          */
1736         cmd_status = megasas_finish_internal_command(cmd, req, resid);
1737         if (cmd_status == MFI_STAT_INVALID_STATUS) {
1738             return;
1739         }
1740     } else {
1741         req->status = status;
1742         trace_megasas_scsi_complete(cmd->index, req->status,
1743                                     cmd->iov_size, req->cmd.xfer);
1744         if (req->status != GOOD) {
1745             cmd_status = MFI_STAT_SCSI_DONE_WITH_ERROR;
1746         }
1747         if (req->status == CHECK_CONDITION) {
1748             megasas_copy_sense(cmd);
1749         }
1750
1751         megasas_unmap_sgl(cmd);
1752         cmd->frame->header.scsi_status = req->status;
1753         scsi_req_unref(cmd->req);
1754         cmd->req = NULL;
1755     }
1756     cmd->frame->header.cmd_status = cmd_status;
1757     megasas_complete_frame(cmd->state, cmd->context);
1758 }
1759
1760 static void megasas_command_cancel(SCSIRequest *req)
1761 {
1762     MegasasCmd *cmd = req->hba_private;
1763
1764     if (cmd) {
1765         megasas_abort_command(cmd);
1766     } else {
1767         scsi_req_unref(req);
1768     }
1769 }
1770
1771 static int megasas_handle_abort(MegasasState *s, MegasasCmd *cmd)
1772 {
1773     uint64_t abort_ctx = le64_to_cpu(cmd->frame->abort.abort_context);
1774     hwaddr abort_addr, addr_hi, addr_lo;
1775     MegasasCmd *abort_cmd;
1776
1777     addr_hi = le32_to_cpu(cmd->frame->abort.abort_mfi_addr_hi);
1778     addr_lo = le32_to_cpu(cmd->frame->abort.abort_mfi_addr_lo);
1779     abort_addr = ((uint64_t)addr_hi << 32) | addr_lo;
1780
1781     abort_cmd = megasas_lookup_frame(s, abort_addr);
1782     if (!abort_cmd) {
1783         trace_megasas_abort_no_cmd(cmd->index, abort_ctx);
1784         s->event_count++;
1785         return MFI_STAT_OK;
1786     }
1787     if (!megasas_use_queue64(s)) {
1788         abort_ctx &= (uint64_t)0xFFFFFFFF;
1789     }
1790     if (abort_cmd->context != abort_ctx) {
1791         trace_megasas_abort_invalid_context(cmd->index, abort_cmd->index,
1792                                             abort_cmd->context);
1793         s->event_count++;
1794         return MFI_STAT_ABORT_NOT_POSSIBLE;
1795     }
1796     trace_megasas_abort_frame(cmd->index, abort_cmd->index);
1797     megasas_abort_command(abort_cmd);
1798     if (!s->event_cmd || abort_cmd != s->event_cmd) {
1799         s->event_cmd = NULL;
1800     }
1801     s->event_count++;
1802     return MFI_STAT_OK;
1803 }
1804
1805 static void megasas_handle_frame(MegasasState *s, uint64_t frame_addr,
1806                                  uint32_t frame_count)
1807 {
1808     uint8_t frame_status = MFI_STAT_INVALID_CMD;
1809     uint64_t frame_context;
1810     MegasasCmd *cmd;
1811
1812     /*
1813      * Always read 64bit context, top bits will be
1814      * masked out if required in megasas_enqueue_frame()
1815      */
1816     frame_context = megasas_frame_get_context(frame_addr);
1817
1818     cmd = megasas_enqueue_frame(s, frame_addr, frame_context, frame_count);
1819     if (!cmd) {
1820         /* reply queue full */
1821         trace_megasas_frame_busy(frame_addr);
1822         megasas_frame_set_scsi_status(frame_addr, BUSY);
1823         megasas_frame_set_cmd_status(frame_addr, MFI_STAT_SCSI_DONE_WITH_ERROR);
1824         megasas_complete_frame(s, frame_context);
1825         s->event_count++;
1826         return;
1827     }
1828     switch (cmd->frame->header.frame_cmd) {
1829     case MFI_CMD_INIT:
1830         frame_status = megasas_init_firmware(s, cmd);
1831         break;
1832     case MFI_CMD_DCMD:
1833         frame_status = megasas_handle_dcmd(s, cmd);
1834         break;
1835     case MFI_CMD_ABORT:
1836         frame_status = megasas_handle_abort(s, cmd);
1837         break;
1838     case MFI_CMD_PD_SCSI_IO:
1839         frame_status = megasas_handle_scsi(s, cmd, 0);
1840         break;
1841     case MFI_CMD_LD_SCSI_IO:
1842         frame_status = megasas_handle_scsi(s, cmd, 1);
1843         break;
1844     case MFI_CMD_LD_READ:
1845     case MFI_CMD_LD_WRITE:
1846         frame_status = megasas_handle_io(s, cmd);
1847         break;
1848     default:
1849         trace_megasas_unhandled_frame_cmd(cmd->index,
1850                                           cmd->frame->header.frame_cmd);
1851         s->event_count++;
1852         break;
1853     }
1854     if (frame_status != MFI_STAT_INVALID_STATUS) {
1855         if (cmd->frame) {
1856             cmd->frame->header.cmd_status = frame_status;
1857         } else {
1858             megasas_frame_set_cmd_status(frame_addr, frame_status);
1859         }
1860         megasas_complete_frame(s, cmd->context);
1861     }
1862 }
1863
1864 static uint64_t megasas_mmio_read(void *opaque, hwaddr addr,
1865                                   unsigned size)
1866 {
1867     MegasasState *s = opaque;
1868     uint32_t retval = 0;
1869
1870     switch (addr) {
1871     case MFI_IDB:
1872         retval = 0;
1873         break;
1874     case MFI_OMSG0:
1875     case MFI_OSP0:
1876         retval = (megasas_use_msix(s) ? MFI_FWSTATE_MSIX_SUPPORTED : 0) |
1877             (s->fw_state & MFI_FWSTATE_MASK) |
1878             ((s->fw_sge & 0xff) << 16) |
1879             (s->fw_cmds & 0xFFFF);
1880         break;
1881     case MFI_OSTS:
1882         if (megasas_intr_enabled(s) && s->doorbell) {
1883             retval = MFI_1078_RM | 1;
1884         }
1885         break;
1886     case MFI_OMSK:
1887         retval = s->intr_mask;
1888         break;
1889     case MFI_ODCR0:
1890         retval = s->doorbell;
1891         break;
1892     default:
1893         trace_megasas_mmio_invalid_readl(addr);
1894         break;
1895     }
1896     trace_megasas_mmio_readl(addr, retval);
1897     return retval;
1898 }
1899
1900 static void megasas_mmio_write(void *opaque, hwaddr addr,
1901                                uint64_t val, unsigned size)
1902 {
1903     MegasasState *s = opaque;
1904     uint64_t frame_addr;
1905     uint32_t frame_count;
1906     int i;
1907
1908     trace_megasas_mmio_writel(addr, val);
1909     switch (addr) {
1910     case MFI_IDB:
1911         if (val & MFI_FWINIT_ABORT) {
1912             /* Abort all pending cmds */
1913             for (i = 0; i < s->fw_cmds; i++) {
1914                 megasas_abort_command(&s->frames[i]);
1915             }
1916         }
1917         if (val & MFI_FWINIT_READY) {
1918             /* move to FW READY */
1919             megasas_soft_reset(s);
1920         }
1921         if (val & MFI_FWINIT_MFIMODE) {
1922             /* discard MFIs */
1923         }
1924         break;
1925     case MFI_OMSK:
1926         s->intr_mask = val;
1927         if (!megasas_intr_enabled(s) && !msix_enabled(&s->dev)) {
1928             trace_megasas_irq_lower();
1929             qemu_irq_lower(s->dev.irq[0]);
1930         }
1931         if (megasas_intr_enabled(s)) {
1932             trace_megasas_intr_enabled();
1933         } else {
1934             trace_megasas_intr_disabled();
1935         }
1936         break;
1937     case MFI_ODCR0:
1938         s->doorbell = 0;
1939         if (s->producer_pa && megasas_intr_enabled(s)) {
1940             /* Update reply queue pointer */
1941             trace_megasas_qf_update(s->reply_queue_head, s->busy);
1942             stl_le_phys(s->producer_pa, s->reply_queue_head);
1943             if (!msix_enabled(&s->dev)) {
1944                 trace_megasas_irq_lower();
1945                 qemu_irq_lower(s->dev.irq[0]);
1946             }
1947         }
1948         break;
1949     case MFI_IQPH:
1950         /* Received high 32 bits of a 64 bit MFI frame address */
1951         s->frame_hi = val;
1952         break;
1953     case MFI_IQPL:
1954         /* Received low 32 bits of a 64 bit MFI frame address */
1955     case MFI_IQP:
1956         /* Received 32 bit MFI frame address */
1957         frame_addr = (val & ~0x1F);
1958         /* Add possible 64 bit offset */
1959         frame_addr |= ((uint64_t)s->frame_hi << 32);
1960         s->frame_hi = 0;
1961         frame_count = (val >> 1) & 0xF;
1962         megasas_handle_frame(s, frame_addr, frame_count);
1963         break;
1964     default:
1965         trace_megasas_mmio_invalid_writel(addr, val);
1966         break;
1967     }
1968 }
1969
1970 static const MemoryRegionOps megasas_mmio_ops = {
1971     .read = megasas_mmio_read,
1972     .write = megasas_mmio_write,
1973     .endianness = DEVICE_LITTLE_ENDIAN,
1974     .impl = {
1975         .min_access_size = 8,
1976         .max_access_size = 8,
1977     }
1978 };
1979
1980 static uint64_t megasas_port_read(void *opaque, hwaddr addr,
1981                                   unsigned size)
1982 {
1983     return megasas_mmio_read(opaque, addr & 0xff, size);
1984 }
1985
1986 static void megasas_port_write(void *opaque, hwaddr addr,
1987                                uint64_t val, unsigned size)
1988 {
1989     megasas_mmio_write(opaque, addr & 0xff, val, size);
1990 }
1991
1992 static const MemoryRegionOps megasas_port_ops = {
1993     .read = megasas_port_read,
1994     .write = megasas_port_write,
1995     .endianness = DEVICE_LITTLE_ENDIAN,
1996     .impl = {
1997         .min_access_size = 4,
1998         .max_access_size = 4,
1999     }
2000 };
2001
2002 static uint64_t megasas_queue_read(void *opaque, hwaddr addr,
2003                                    unsigned size)
2004 {
2005     return 0;
2006 }
2007
2008 static const MemoryRegionOps megasas_queue_ops = {
2009     .read = megasas_queue_read,
2010     .endianness = DEVICE_LITTLE_ENDIAN,
2011     .impl = {
2012         .min_access_size = 8,
2013         .max_access_size = 8,
2014     }
2015 };
2016
2017 static void megasas_soft_reset(MegasasState *s)
2018 {
2019     int i;
2020     MegasasCmd *cmd;
2021
2022     trace_megasas_reset();
2023     for (i = 0; i < s->fw_cmds; i++) {
2024         cmd = &s->frames[i];
2025         megasas_abort_command(cmd);
2026     }
2027     megasas_reset_frames(s);
2028     s->reply_queue_len = s->fw_cmds;
2029     s->reply_queue_pa = 0;
2030     s->consumer_pa = 0;
2031     s->producer_pa = 0;
2032     s->fw_state = MFI_FWSTATE_READY;
2033     s->doorbell = 0;
2034     s->intr_mask = MEGASAS_INTR_DISABLED_MASK;
2035     s->frame_hi = 0;
2036     s->flags &= ~MEGASAS_MASK_USE_QUEUE64;
2037     s->event_count++;
2038     s->boot_event = s->event_count;
2039 }
2040
2041 static void megasas_scsi_reset(DeviceState *dev)
2042 {
2043     MegasasState *s = DO_UPCAST(MegasasState, dev.qdev, dev);
2044
2045     megasas_soft_reset(s);
2046 }
2047
2048 static const VMStateDescription vmstate_megasas = {
2049     .name = "megasas",
2050     .version_id = 0,
2051     .minimum_version_id = 0,
2052     .minimum_version_id_old = 0,
2053     .fields      = (VMStateField[]) {
2054         VMSTATE_PCI_DEVICE(dev, MegasasState),
2055
2056         VMSTATE_INT32(fw_state, MegasasState),
2057         VMSTATE_INT32(intr_mask, MegasasState),
2058         VMSTATE_INT32(doorbell, MegasasState),
2059         VMSTATE_UINT64(reply_queue_pa, MegasasState),
2060         VMSTATE_UINT64(consumer_pa, MegasasState),
2061         VMSTATE_UINT64(producer_pa, MegasasState),
2062         VMSTATE_END_OF_LIST()
2063     }
2064 };
2065
2066 static void megasas_scsi_uninit(PCIDevice *d)
2067 {
2068     MegasasState *s = DO_UPCAST(MegasasState, dev, d);
2069
2070 #ifdef USE_MSIX
2071     msix_uninit(&s->dev, &s->mmio_io);
2072 #endif
2073     memory_region_destroy(&s->mmio_io);
2074     memory_region_destroy(&s->port_io);
2075     memory_region_destroy(&s->queue_io);
2076 }
2077
2078 static const struct SCSIBusInfo megasas_scsi_info = {
2079     .tcq = true,
2080     .max_target = MFI_MAX_LD,
2081     .max_lun = 255,
2082
2083     .transfer_data = megasas_xfer_complete,
2084     .get_sg_list = megasas_get_sg_list,
2085     .complete = megasas_command_complete,
2086     .cancel = megasas_command_cancel,
2087 };
2088
2089 static int megasas_scsi_init(PCIDevice *dev)
2090 {
2091     MegasasState *s = DO_UPCAST(MegasasState, dev, dev);
2092     uint8_t *pci_conf;
2093     int i, bar_type;
2094
2095     pci_conf = s->dev.config;
2096
2097     /* PCI latency timer = 0 */
2098     pci_conf[PCI_LATENCY_TIMER] = 0;
2099     /* Interrupt pin 1 */
2100     pci_conf[PCI_INTERRUPT_PIN] = 0x01;
2101
2102     memory_region_init_io(&s->mmio_io, &megasas_mmio_ops, s,
2103                           "megasas-mmio", 0x4000);
2104     memory_region_init_io(&s->port_io, &megasas_port_ops, s,
2105                           "megasas-io", 256);
2106     memory_region_init_io(&s->queue_io, &megasas_queue_ops, s,
2107                           "megasas-queue", 0x40000);
2108
2109 #ifdef USE_MSIX
2110     /* MSI-X support is currently broken */
2111     if (megasas_use_msix(s) &&
2112         msix_init(&s->dev, 15, &s->mmio_io, 0, 0x2000)) {
2113         s->flags &= ~MEGASAS_MASK_USE_MSIX;
2114     }
2115 #else
2116     s->flags &= ~MEGASAS_MASK_USE_MSIX;
2117 #endif
2118
2119     bar_type = PCI_BASE_ADDRESS_SPACE_MEMORY | PCI_BASE_ADDRESS_MEM_TYPE_64;
2120     pci_register_bar(&s->dev, 0, bar_type, &s->mmio_io);
2121     pci_register_bar(&s->dev, 2, PCI_BASE_ADDRESS_SPACE_IO, &s->port_io);
2122     pci_register_bar(&s->dev, 3, bar_type, &s->queue_io);
2123
2124     if (megasas_use_msix(s)) {
2125         msix_vector_use(&s->dev, 0);
2126     }
2127
2128     if (!s->sas_addr) {
2129         s->sas_addr = ((NAA_LOCALLY_ASSIGNED_ID << 24) |
2130                        IEEE_COMPANY_LOCALLY_ASSIGNED) << 36;
2131         s->sas_addr |= (pci_bus_num(dev->bus) << 16);
2132         s->sas_addr |= (PCI_SLOT(dev->devfn) << 8);
2133         s->sas_addr |= PCI_FUNC(dev->devfn);
2134     }
2135     if (!s->hba_serial) {
2136         s->hba_serial = g_strdup(MEGASAS_HBA_SERIAL);
2137     }
2138     if (s->fw_sge >= MEGASAS_MAX_SGE - MFI_PASS_FRAME_SIZE) {
2139         s->fw_sge = MEGASAS_MAX_SGE - MFI_PASS_FRAME_SIZE;
2140     } else if (s->fw_sge >= 128 - MFI_PASS_FRAME_SIZE) {
2141         s->fw_sge = 128 - MFI_PASS_FRAME_SIZE;
2142     } else {
2143         s->fw_sge = 64 - MFI_PASS_FRAME_SIZE;
2144     }
2145     if (s->fw_cmds > MEGASAS_MAX_FRAMES) {
2146         s->fw_cmds = MEGASAS_MAX_FRAMES;
2147     }
2148     trace_megasas_init(s->fw_sge, s->fw_cmds,
2149                        megasas_use_msix(s) ? "MSI-X" : "INTx",
2150                        megasas_is_jbod(s) ? "jbod" : "raid");
2151     s->fw_luns = (MFI_MAX_LD > MAX_SCSI_DEVS) ?
2152         MAX_SCSI_DEVS : MFI_MAX_LD;
2153     s->producer_pa = 0;
2154     s->consumer_pa = 0;
2155     for (i = 0; i < s->fw_cmds; i++) {
2156         s->frames[i].index = i;
2157         s->frames[i].context = -1;
2158         s->frames[i].pa = 0;
2159         s->frames[i].state = s;
2160     }
2161
2162     scsi_bus_new(&s->bus, &dev->qdev, &megasas_scsi_info);
2163     scsi_bus_legacy_handle_cmdline(&s->bus);
2164     return 0;
2165 }
2166
2167 static Property megasas_properties[] = {
2168     DEFINE_PROP_UINT32("max_sge", MegasasState, fw_sge,
2169                        MEGASAS_DEFAULT_SGE),
2170     DEFINE_PROP_UINT32("max_cmds", MegasasState, fw_cmds,
2171                        MEGASAS_DEFAULT_FRAMES),
2172     DEFINE_PROP_STRING("hba_serial", MegasasState, hba_serial),
2173     DEFINE_PROP_HEX64("sas_address", MegasasState, sas_addr, 0),
2174 #ifdef USE_MSIX
2175     DEFINE_PROP_BIT("use_msix", MegasasState, flags,
2176                     MEGASAS_FLAG_USE_MSIX, false),
2177 #endif
2178     DEFINE_PROP_BIT("use_jbod", MegasasState, flags,
2179                     MEGASAS_FLAG_USE_JBOD, false),
2180     DEFINE_PROP_END_OF_LIST(),
2181 };
2182
2183 static void megasas_class_init(ObjectClass *oc, void *data)
2184 {
2185     DeviceClass *dc = DEVICE_CLASS(oc);
2186     PCIDeviceClass *pc = PCI_DEVICE_CLASS(oc);
2187
2188     pc->init = megasas_scsi_init;
2189     pc->exit = megasas_scsi_uninit;
2190     pc->vendor_id = PCI_VENDOR_ID_LSI_LOGIC;
2191     pc->device_id = PCI_DEVICE_ID_LSI_SAS1078;
2192     pc->subsystem_vendor_id = PCI_VENDOR_ID_LSI_LOGIC;
2193     pc->subsystem_id = 0x1013;
2194     pc->class_id = PCI_CLASS_STORAGE_RAID;
2195     dc->props = megasas_properties;
2196     dc->reset = megasas_scsi_reset;
2197     dc->vmsd = &vmstate_megasas;
2198     dc->desc = "LSI MegaRAID SAS 1078";
2199 }
2200
2201 static const TypeInfo megasas_info = {
2202     .name  = "megasas",
2203     .parent = TYPE_PCI_DEVICE,
2204     .instance_size = sizeof(MegasasState),
2205     .class_init = megasas_class_init,
2206 };
2207
2208 static void megasas_register_types(void)
2209 {
2210     type_register_static(&megasas_info);
2211 }
2212
2213 type_init(megasas_register_types)