git.oblomov.eu Git - linux-2.6/blob - drivers/infiniband/hw/mthca/mthca_cmd.c

   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
   4  * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
   5  *
   6  * This software is available to you under a choice of one of two
   7  * licenses.  You may choose to be licensed under the terms of the GNU
   8  * General Public License (GPL) Version 2, available from the file
   9  * COPYING in the main directory of this source tree, or the
  10  * OpenIB.org BSD license below:
  11  *
  12  *     Redistribution and use in source and binary forms, with or
  13  *     without modification, are permitted provided that the following
  14  *     conditions are met:
  15  *
  16  *      - Redistributions of source code must retain the above
  17  *        copyright notice, this list of conditions and the following
  18  *        disclaimer.
  19  *
  20  *      - Redistributions in binary form must reproduce the above
  21  *        copyright notice, this list of conditions and the following
  22  *        disclaimer in the documentation and/or other materials
  23  *        provided with the distribution.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32  * SOFTWARE.
  33  *
  34  * $Id: mthca_cmd.c 1349 2004-12-16 21:09:43Z roland $
  35  */
  36
  37 #include <linux/completion.h>
  38 #include <linux/pci.h>
  39 #include <linux/errno.h>
  40 #include <linux/sched.h>
  41 #include <asm/io.h>
  42 #include <rdma/ib_mad.h>
  43
  44 #include "mthca_dev.h"
  45 #include "mthca_config_reg.h"
  46 #include "mthca_cmd.h"
  47 #include "mthca_memfree.h"
  48
  49 #define CMD_POLL_TOKEN 0xffff
  50
  51 enum {
  52         HCR_IN_PARAM_OFFSET    = 0x00,
  53         HCR_IN_MODIFIER_OFFSET = 0x08,
  54         HCR_OUT_PARAM_OFFSET   = 0x0c,
  55         HCR_TOKEN_OFFSET       = 0x14,
  56         HCR_STATUS_OFFSET      = 0x18,
  57
  58         HCR_OPMOD_SHIFT        = 12,
  59         HCA_E_BIT              = 22,
  60         HCR_GO_BIT             = 23
  61 };
  62
  63 enum {
  64         /* initialization and general commands */
  65         CMD_SYS_EN          = 0x1,
  66         CMD_SYS_DIS         = 0x2,
  67         CMD_MAP_FA          = 0xfff,
  68         CMD_UNMAP_FA        = 0xffe,
  69         CMD_RUN_FW          = 0xff6,
  70         CMD_MOD_STAT_CFG    = 0x34,
  71         CMD_QUERY_DEV_LIM   = 0x3,
  72         CMD_QUERY_FW        = 0x4,
  73         CMD_ENABLE_LAM      = 0xff8,
  74         CMD_DISABLE_LAM     = 0xff7,
  75         CMD_QUERY_DDR       = 0x5,
  76         CMD_QUERY_ADAPTER   = 0x6,
  77         CMD_INIT_HCA        = 0x7,
  78         CMD_CLOSE_HCA       = 0x8,
  79         CMD_INIT_IB         = 0x9,
  80         CMD_CLOSE_IB        = 0xa,
  81         CMD_QUERY_HCA       = 0xb,
  82         CMD_SET_IB          = 0xc,
  83         CMD_ACCESS_DDR      = 0x2e,
  84         CMD_MAP_ICM         = 0xffa,
  85         CMD_UNMAP_ICM       = 0xff9,
  86         CMD_MAP_ICM_AUX     = 0xffc,
  87         CMD_UNMAP_ICM_AUX   = 0xffb,
  88         CMD_SET_ICM_SIZE    = 0xffd,
  89
  90         /* TPT commands */
  91         CMD_SW2HW_MPT       = 0xd,
  92         CMD_QUERY_MPT       = 0xe,
  93         CMD_HW2SW_MPT       = 0xf,
  94         CMD_READ_MTT        = 0x10,
  95         CMD_WRITE_MTT       = 0x11,
  96         CMD_SYNC_TPT        = 0x2f,
  97
  98         /* EQ commands */
  99         CMD_MAP_EQ          = 0x12,
 100         CMD_SW2HW_EQ        = 0x13,
 101         CMD_HW2SW_EQ        = 0x14,
 102         CMD_QUERY_EQ        = 0x15,
 103
 104         /* CQ commands */
 105         CMD_SW2HW_CQ        = 0x16,
 106         CMD_HW2SW_CQ        = 0x17,
 107         CMD_QUERY_CQ        = 0x18,
 108         CMD_RESIZE_CQ       = 0x2c,
 109
 110         /* SRQ commands */
 111         CMD_SW2HW_SRQ       = 0x35,
 112         CMD_HW2SW_SRQ       = 0x36,
 113         CMD_QUERY_SRQ       = 0x37,
 114         CMD_ARM_SRQ         = 0x40,
 115
 116         /* QP/EE commands */
 117         CMD_RST2INIT_QPEE   = 0x19,
 118         CMD_INIT2RTR_QPEE   = 0x1a,
 119         CMD_RTR2RTS_QPEE    = 0x1b,
 120         CMD_RTS2RTS_QPEE    = 0x1c,
 121         CMD_SQERR2RTS_QPEE  = 0x1d,
 122         CMD_2ERR_QPEE       = 0x1e,
 123         CMD_RTS2SQD_QPEE    = 0x1f,
 124         CMD_SQD2SQD_QPEE    = 0x38,
 125         CMD_SQD2RTS_QPEE    = 0x20,
 126         CMD_ERR2RST_QPEE    = 0x21,
 127         CMD_QUERY_QPEE      = 0x22,
 128         CMD_INIT2INIT_QPEE  = 0x2d,
 129         CMD_SUSPEND_QPEE    = 0x32,
 130         CMD_UNSUSPEND_QPEE  = 0x33,
 131         /* special QPs and management commands */
 132         CMD_CONF_SPECIAL_QP = 0x23,
 133         CMD_MAD_IFC         = 0x24,
 134
 135         /* multicast commands */
 136         CMD_READ_MGM        = 0x25,
 137         CMD_WRITE_MGM       = 0x26,
 138         CMD_MGID_HASH       = 0x27,
 139
 140         /* miscellaneous commands */
 141         CMD_DIAG_RPRT       = 0x30,
 142         CMD_NOP             = 0x31,
 143
 144         /* debug commands */
 145         CMD_QUERY_DEBUG_MSG = 0x2a,
 146         CMD_SET_DEBUG_MSG   = 0x2b,
 147 };
 148
 149 /*
 150  * According to Mellanox code, FW may be starved and never complete
 151  * commands.  So we can't use strict timeouts described in PRM -- we
 152  * just arbitrarily select 60 seconds for now.
 153  */
 154 #if 0
 155 /*
 156  * Round up and add 1 to make sure we get the full wait time (since we
 157  * will be starting in the middle of a jiffy)
 158  */
 159 enum {
 160         CMD_TIME_CLASS_A = (HZ + 999) / 1000 + 1,
 161         CMD_TIME_CLASS_B = (HZ +  99) /  100 + 1,
 162         CMD_TIME_CLASS_C = (HZ +   9) /   10 + 1
 163 };
 164 #else
 165 enum {
 166         CMD_TIME_CLASS_A = 60 * HZ,
 167         CMD_TIME_CLASS_B = 60 * HZ,
 168         CMD_TIME_CLASS_C = 60 * HZ
 169 };
 170 #endif
 171
 172 enum {
 173         GO_BIT_TIMEOUT = HZ * 10
 174 };
 175
 176 struct mthca_cmd_context {
 177         struct completion done;
 178         int               result;
 179         int               next;
 180         u64               out_param;
 181         u16               token;
 182         u8                status;
 183 };
 184
 185 static int fw_cmd_doorbell = 0;
 186 module_param(fw_cmd_doorbell, int, 0644);
 187 MODULE_PARM_DESC(fw_cmd_doorbell, "post FW commands through doorbell page if nonzero "
 188                  "(and supported by FW)");
 189
 190 static inline int go_bit(struct mthca_dev *dev)
 191 {
 192         return readl(dev->hcr + HCR_STATUS_OFFSET) &
 193                 swab32(1 << HCR_GO_BIT);
 194 }
 195
 196 static void mthca_cmd_post_dbell(struct mthca_dev *dev,
 197                                  u64 in_param,
 198                                  u64 out_param,
 199                                  u32 in_modifier,
 200                                  u8 op_modifier,
 201                                  u16 op,
 202                                  u16 token)
 203 {
 204         void __iomem *ptr = dev->cmd.dbell_map;
 205         u16 *offs = dev->cmd.dbell_offsets;
 206
 207         __raw_writel((__force u32) cpu_to_be32(in_param >> 32),           ptr + offs[0]);
 208         wmb();
 209         __raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful),  ptr + offs[1]);
 210         wmb();
 211         __raw_writel((__force u32) cpu_to_be32(in_modifier),              ptr + offs[2]);
 212         wmb();
 213         __raw_writel((__force u32) cpu_to_be32(out_param >> 32),          ptr + offs[3]);
 214         wmb();
 215         __raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), ptr + offs[4]);
 216         wmb();
 217         __raw_writel((__force u32) cpu_to_be32(token << 16),              ptr + offs[5]);
 218         wmb();
 219         __raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT)                |
 220                                                (1 << HCA_E_BIT)                 |
 221                                                (op_modifier << HCR_OPMOD_SHIFT) |
 222                                                 op),                      ptr + offs[6]);
 223         wmb();
 224         __raw_writel((__force u32) 0,                                     ptr + offs[7]);
 225         wmb();
 226 }
 227
 228 static int mthca_cmd_post_hcr(struct mthca_dev *dev,
 229                               u64 in_param,
 230                               u64 out_param,
 231                               u32 in_modifier,
 232                               u8 op_modifier,
 233                               u16 op,
 234                               u16 token,
 235                               int event)
 236 {
 237         if (event) {
 238                 unsigned long end = jiffies + GO_BIT_TIMEOUT;
 239
 240                 while (go_bit(dev) && time_before(jiffies, end)) {
 241                         set_current_state(TASK_RUNNING);
 242                         schedule();
 243                 }
 244         }
 245
 246         if (go_bit(dev))
 247                 return -EAGAIN;
 248
 249         /*
 250          * We use writel (instead of something like memcpy_toio)
 251          * because writes of less than 32 bits to the HCR don't work
 252          * (and some architectures such as ia64 implement memcpy_toio
 253          * in terms of writeb).
 254          */
 255         __raw_writel((__force u32) cpu_to_be32(in_param >> 32),           dev->hcr + 0 * 4);
 256         __raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful),  dev->hcr + 1 * 4);
 257         __raw_writel((__force u32) cpu_to_be32(in_modifier),              dev->hcr + 2 * 4);
 258         __raw_writel((__force u32) cpu_to_be32(out_param >> 32),          dev->hcr + 3 * 4);
 259         __raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), dev->hcr + 4 * 4);
 260         __raw_writel((__force u32) cpu_to_be32(token << 16),              dev->hcr + 5 * 4);
 261
 262         /* __raw_writel may not order writes. */
 263         wmb();
 264
 265         __raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT)                |
 266                                                (event ? (1 << HCA_E_BIT) : 0)   |
 267                                                (op_modifier << HCR_OPMOD_SHIFT) |
 268                                                op),                       dev->hcr + 6 * 4);
 269
 270         return 0;
 271 }
 272
 273 static int mthca_cmd_post(struct mthca_dev *dev,
 274                           u64 in_param,
 275                           u64 out_param,
 276                           u32 in_modifier,
 277                           u8 op_modifier,
 278                           u16 op,
 279                           u16 token,
 280                           int event)
 281 {
 282         int err = 0;
 283
 284         mutex_lock(&dev->cmd.hcr_mutex);
 285
 286         if (event && dev->cmd.flags & MTHCA_CMD_POST_DOORBELLS && fw_cmd_doorbell)
 287                 mthca_cmd_post_dbell(dev, in_param, out_param, in_modifier,
 288                                            op_modifier, op, token);
 289         else
 290                 err = mthca_cmd_post_hcr(dev, in_param, out_param, in_modifier,
 291                                          op_modifier, op, token, event);
 292
 293         /*
 294          * Make sure that our HCR writes don't get mixed in with
 295          * writes from another CPU starting a FW command.
 296          */
 297         mmiowb();
 298
 299         mutex_unlock(&dev->cmd.hcr_mutex);
 300         return err;
 301 }
 302
 303 static int mthca_cmd_poll(struct mthca_dev *dev,
 304                           u64 in_param,
 305                           u64 *out_param,
 306                           int out_is_imm,
 307                           u32 in_modifier,
 308                           u8 op_modifier,
 309                           u16 op,
 310                           unsigned long timeout,
 311                           u8 *status)
 312 {
 313         int err = 0;
 314         unsigned long end;
 315
 316         down(&dev->cmd.poll_sem);
 317
 318         err = mthca_cmd_post(dev, in_param,
 319                              out_param ? *out_param : 0,
 320                              in_modifier, op_modifier,
 321                              op, CMD_POLL_TOKEN, 0);
 322         if (err)
 323                 goto out;
 324
 325         end = timeout + jiffies;
 326         while (go_bit(dev) && time_before(jiffies, end)) {
 327                 set_current_state(TASK_RUNNING);
 328                 schedule();
 329         }
 330
 331         if (go_bit(dev)) {
 332                 err = -EBUSY;
 333                 goto out;
 334         }
 335
 336         if (out_is_imm)
 337                 *out_param =
 338                         (u64) be32_to_cpu((__force __be32)
 339                                           __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET)) << 32 |
 340                         (u64) be32_to_cpu((__force __be32)
 341                                           __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET + 4));
 342
 343         *status = be32_to_cpu((__force __be32) __raw_readl(dev->hcr + HCR_STATUS_OFFSET)) >> 24;
 344
 345 out:
 346         up(&dev->cmd.poll_sem);
 347         return err;
 348 }
 349
 350 void mthca_cmd_event(struct mthca_dev *dev,
 351                      u16 token,
 352                      u8  status,
 353                      u64 out_param)
 354 {
 355         struct mthca_cmd_context *context =
 356                 &dev->cmd.context[token & dev->cmd.token_mask];
 357
 358         /* previously timed out command completing at long last */
 359         if (token != context->token)
 360                 return;
 361
 362         context->result    = 0;
 363         context->status    = status;
 364         context->out_param = out_param;
 365
 366         complete(&context->done);
 367 }
 368
 369 static int mthca_cmd_wait(struct mthca_dev *dev,
 370                           u64 in_param,
 371                           u64 *out_param,
 372                           int out_is_imm,
 373                           u32 in_modifier,
 374                           u8 op_modifier,
 375                           u16 op,
 376                           unsigned long timeout,
 377                           u8 *status)
 378 {
 379         int err = 0;
 380         struct mthca_cmd_context *context;
 381
 382         down(&dev->cmd.event_sem);
 383
 384         spin_lock(&dev->cmd.context_lock);
 385         BUG_ON(dev->cmd.free_head < 0);
 386         context = &dev->cmd.context[dev->cmd.free_head];
 387         context->token += dev->cmd.token_mask + 1;
 388         dev->cmd.free_head = context->next;
 389         spin_unlock(&dev->cmd.context_lock);
 390
 391         init_completion(&context->done);
 392
 393         err = mthca_cmd_post(dev, in_param,
 394                              out_param ? *out_param : 0,
 395                              in_modifier, op_modifier,
 396                              op, context->token, 1);
 397         if (err)
 398                 goto out;
 399
 400         if (!wait_for_completion_timeout(&context->done, timeout)) {
 401                 err = -EBUSY;
 402                 goto out;
 403         }
 404
 405         err = context->result;
 406         if (err)
 407                 goto out;
 408
 409         *status = context->status;
 410         if (*status)
 411                 mthca_dbg(dev, "Command %02x completed with status %02x\n",
 412                           op, *status);
 413
 414         if (out_is_imm)
 415                 *out_param = context->out_param;
 416
 417 out:
 418         spin_lock(&dev->cmd.context_lock);
 419         context->next = dev->cmd.free_head;
 420         dev->cmd.free_head = context - dev->cmd.context;
 421         spin_unlock(&dev->cmd.context_lock);
 422
 423         up(&dev->cmd.event_sem);
 424         return err;
 425 }
 426
 427 /* Invoke a command with an output mailbox */
 428 static int mthca_cmd_box(struct mthca_dev *dev,
 429                          u64 in_param,
 430                          u64 out_param,
 431                          u32 in_modifier,
 432                          u8 op_modifier,
 433                          u16 op,
 434                          unsigned long timeout,
 435                          u8 *status)
 436 {
 437         if (dev->cmd.flags & MTHCA_CMD_USE_EVENTS)
 438                 return mthca_cmd_wait(dev, in_param, &out_param, 0,
 439                                       in_modifier, op_modifier, op,
 440                                       timeout, status);
 441         else
 442                 return mthca_cmd_poll(dev, in_param, &out_param, 0,
 443                                       in_modifier, op_modifier, op,
 444                                       timeout, status);
 445 }
 446
 447 /* Invoke a command with no output parameter */
 448 static int mthca_cmd(struct mthca_dev *dev,
 449                      u64 in_param,
 450                      u32 in_modifier,
 451                      u8 op_modifier,
 452                      u16 op,
 453                      unsigned long timeout,
 454                      u8 *status)
 455 {
 456         return mthca_cmd_box(dev, in_param, 0, in_modifier,
 457                              op_modifier, op, timeout, status);
 458 }
 459
 460 /*
 461  * Invoke a command with an immediate output parameter (and copy the
 462  * output into the caller's out_param pointer after the command
 463  * executes).
 464  */
 465 static int mthca_cmd_imm(struct mthca_dev *dev,
 466                          u64 in_param,
 467                          u64 *out_param,
 468                          u32 in_modifier,
 469                          u8 op_modifier,
 470                          u16 op,
 471                          unsigned long timeout,
 472                          u8 *status)
 473 {
 474         if (dev->cmd.flags & MTHCA_CMD_USE_EVENTS)
 475                 return mthca_cmd_wait(dev, in_param, out_param, 1,
 476                                       in_modifier, op_modifier, op,
 477                                       timeout, status);
 478         else
 479                 return mthca_cmd_poll(dev, in_param, out_param, 1,
 480                                       in_modifier, op_modifier, op,
 481                                       timeout, status);
 482 }
 483
 484 int mthca_cmd_init(struct mthca_dev *dev)
 485 {
 486         mutex_init(&dev->cmd.hcr_mutex);
 487         sema_init(&dev->cmd.poll_sem, 1);
 488         dev->cmd.flags = 0;
 489
 490         dev->hcr = ioremap(pci_resource_start(dev->pdev, 0) + MTHCA_HCR_BASE,
 491                            MTHCA_HCR_SIZE);
 492         if (!dev->hcr) {
 493                 mthca_err(dev, "Couldn't map command register.");
 494                 return -ENOMEM;
 495         }
 496
 497         dev->cmd.pool = pci_pool_create("mthca_cmd", dev->pdev,
 498                                         MTHCA_MAILBOX_SIZE,
 499                                         MTHCA_MAILBOX_SIZE, 0);
 500         if (!dev->cmd.pool) {
 501                 iounmap(dev->hcr);
 502                 return -ENOMEM;
 503         }
 504
 505         return 0;
 506 }
 507
 508 void mthca_cmd_cleanup(struct mthca_dev *dev)
 509 {
 510         pci_pool_destroy(dev->cmd.pool);
 511         iounmap(dev->hcr);
 512         if (dev->cmd.flags & MTHCA_CMD_POST_DOORBELLS)
 513                 iounmap(dev->cmd.dbell_map);
 514 }
 515
 516 /*
 517  * Switch to using events to issue FW commands (should be called after
 518  * event queue to command events has been initialized).
 519  */
 520 int mthca_cmd_use_events(struct mthca_dev *dev)
 521 {
 522         int i;
 523
 524         dev->cmd.context = kmalloc(dev->cmd.max_cmds *
 525                                    sizeof (struct mthca_cmd_context),
 526                                    GFP_KERNEL);
 527         if (!dev->cmd.context)
 528                 return -ENOMEM;
 529
 530         for (i = 0; i < dev->cmd.max_cmds; ++i) {
 531                 dev->cmd.context[i].token = i;
 532                 dev->cmd.context[i].next = i + 1;
 533         }
 534
 535         dev->cmd.context[dev->cmd.max_cmds - 1].next = -1;
 536         dev->cmd.free_head = 0;
 537
 538         sema_init(&dev->cmd.event_sem, dev->cmd.max_cmds);
 539         spin_lock_init(&dev->cmd.context_lock);
 540
 541         for (dev->cmd.token_mask = 1;
 542              dev->cmd.token_mask < dev->cmd.max_cmds;
 543              dev->cmd.token_mask <<= 1)
 544                 ; /* nothing */
 545         --dev->cmd.token_mask;
 546
 547         dev->cmd.flags |= MTHCA_CMD_USE_EVENTS;
 548
 549         down(&dev->cmd.poll_sem);
 550
 551         return 0;
 552 }
 553
 554 /*
 555  * Switch back to polling (used when shutting down the device)
 556  */
 557 void mthca_cmd_use_polling(struct mthca_dev *dev)
 558 {
 559         int i;
 560
 561         dev->cmd.flags &= ~MTHCA_CMD_USE_EVENTS;
 562
 563         for (i = 0; i < dev->cmd.max_cmds; ++i)
 564                 down(&dev->cmd.event_sem);
 565
 566         kfree(dev->cmd.context);
 567
 568         up(&dev->cmd.poll_sem);
 569 }
 570
 571 struct mthca_mailbox *mthca_alloc_mailbox(struct mthca_dev *dev,
 572                                           gfp_t gfp_mask)
 573 {
 574         struct mthca_mailbox *mailbox;
 575
 576         mailbox = kmalloc(sizeof *mailbox, gfp_mask);
 577         if (!mailbox)
 578                 return ERR_PTR(-ENOMEM);
 579
 580         mailbox->buf = pci_pool_alloc(dev->cmd.pool, gfp_mask, &mailbox->dma);
 581         if (!mailbox->buf) {
 582                 kfree(mailbox);
 583                 return ERR_PTR(-ENOMEM);
 584         }
 585
 586         return mailbox;
 587 }
 588
 589 void mthca_free_mailbox(struct mthca_dev *dev, struct mthca_mailbox *mailbox)
 590 {
 591         if (!mailbox)
 592                 return;
 593
 594         pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma);
 595         kfree(mailbox);
 596 }
 597
 598 int mthca_SYS_EN(struct mthca_dev *dev, u8 *status)
 599 {
 600         u64 out;
 601         int ret;
 602
 603         ret = mthca_cmd_imm(dev, 0, &out, 0, 0, CMD_SYS_EN, HZ, status);
 604
 605         if (*status == MTHCA_CMD_STAT_DDR_MEM_ERR)
 606                 mthca_warn(dev, "SYS_EN DDR error: syn=%x, sock=%d, "
 607                            "sladdr=%d, SPD source=%s\n",
 608                            (int) (out >> 6) & 0xf, (int) (out >> 4) & 3,
 609                            (int) (out >> 1) & 7, (int) out & 1 ? "NVMEM" : "DIMM");
 610
 611         return ret;
 612 }
 613
 614 int mthca_SYS_DIS(struct mthca_dev *dev, u8 *status)
 615 {
 616         return mthca_cmd(dev, 0, 0, 0, CMD_SYS_DIS, HZ, status);
 617 }
 618
 619 static int mthca_map_cmd(struct mthca_dev *dev, u16 op, struct mthca_icm *icm,
 620                          u64 virt, u8 *status)
 621 {
 622         struct mthca_mailbox *mailbox;
 623         struct mthca_icm_iter iter;
 624         __be64 *pages;
 625         int lg;
 626         int nent = 0;
 627         int i;
 628         int err = 0;
 629         int ts = 0, tc = 0;
 630
 631         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 632         if (IS_ERR(mailbox))
 633                 return PTR_ERR(mailbox);
 634         memset(mailbox->buf, 0, MTHCA_MAILBOX_SIZE);
 635         pages = mailbox->buf;
 636
 637         for (mthca_icm_first(icm, &iter);
 638              !mthca_icm_last(&iter);
 639              mthca_icm_next(&iter)) {
 640                 /*
 641                  * We have to pass pages that are aligned to their
 642                  * size, so find the least significant 1 in the
 643                  * address or size and use that as our log2 size.
 644                  */
 645                 lg = ffs(mthca_icm_addr(&iter) | mthca_icm_size(&iter)) - 1;
 646                 if (lg < MTHCA_ICM_PAGE_SHIFT) {
 647                         mthca_warn(dev, "Got FW area not aligned to %d (%llx/%lx).\n",
 648                                    MTHCA_ICM_PAGE_SIZE,
 649                                    (unsigned long long) mthca_icm_addr(&iter),
 650                                    mthca_icm_size(&iter));
 651                         err = -EINVAL;
 652                         goto out;
 653                 }
 654                 for (i = 0; i < mthca_icm_size(&iter) >> lg; ++i) {
 655                         if (virt != -1) {
 656                                 pages[nent * 2] = cpu_to_be64(virt);
 657                                 virt += 1 << lg;
 658                         }
 659
 660                         pages[nent * 2 + 1] =
 661                                 cpu_to_be64((mthca_icm_addr(&iter) + (i << lg)) |
 662                                             (lg - MTHCA_ICM_PAGE_SHIFT));
 663                         ts += 1 << (lg - 10);
 664                         ++tc;
 665
 666                         if (++nent == MTHCA_MAILBOX_SIZE / 16) {
 667                                 err = mthca_cmd(dev, mailbox->dma, nent, 0, op,
 668                                                 CMD_TIME_CLASS_B, status);
 669                                 if (err || *status)
 670                                         goto out;
 671                                 nent = 0;
 672                         }
 673                 }
 674         }
 675
 676         if (nent)
 677                 err = mthca_cmd(dev, mailbox->dma, nent, 0, op,
 678                                 CMD_TIME_CLASS_B, status);
 679
 680         switch (op) {
 681         case CMD_MAP_FA:
 682                 mthca_dbg(dev, "Mapped %d chunks/%d KB for FW.\n", tc, ts);
 683                 break;
 684         case CMD_MAP_ICM_AUX:
 685                 mthca_dbg(dev, "Mapped %d chunks/%d KB for ICM aux.\n", tc, ts);
 686                 break;
 687         case CMD_MAP_ICM:
 688                 mthca_dbg(dev, "Mapped %d chunks/%d KB at %llx for ICM.\n",
 689                           tc, ts, (unsigned long long) virt - (ts << 10));
 690                 break;
 691         }
 692
 693 out:
 694         mthca_free_mailbox(dev, mailbox);
 695         return err;
 696 }
 697
 698 int mthca_MAP_FA(struct mthca_dev *dev, struct mthca_icm *icm, u8 *status)
 699 {
 700         return mthca_map_cmd(dev, CMD_MAP_FA, icm, -1, status);
 701 }
 702
 703 int mthca_UNMAP_FA(struct mthca_dev *dev, u8 *status)
 704 {
 705         return mthca_cmd(dev, 0, 0, 0, CMD_UNMAP_FA, CMD_TIME_CLASS_B, status);
 706 }
 707
 708 int mthca_RUN_FW(struct mthca_dev *dev, u8 *status)
 709 {
 710         return mthca_cmd(dev, 0, 0, 0, CMD_RUN_FW, CMD_TIME_CLASS_A, status);
 711 }
 712
 713 static void mthca_setup_cmd_doorbells(struct mthca_dev *dev, u64 base)
 714 {
 715         unsigned long addr;
 716         u16 max_off = 0;
 717         int i;
 718
 719         for (i = 0; i < 8; ++i)
 720                 max_off = max(max_off, dev->cmd.dbell_offsets[i]);
 721
 722         if ((base & PAGE_MASK) != ((base + max_off) & PAGE_MASK)) {
 723                 mthca_warn(dev, "Firmware doorbell region at 0x%016llx, "
 724                            "length 0x%x crosses a page boundary\n",
 725                            (unsigned long long) base, max_off);
 726                 return;
 727         }
 728
 729         addr = pci_resource_start(dev->pdev, 2) +
 730                 ((pci_resource_len(dev->pdev, 2) - 1) & base);
 731         dev->cmd.dbell_map = ioremap(addr, max_off + sizeof(u32));
 732         if (!dev->cmd.dbell_map)
 733                 return;
 734
 735         dev->cmd.flags |= MTHCA_CMD_POST_DOORBELLS;
 736         mthca_dbg(dev, "Mapped doorbell page for posting FW commands\n");
 737 }
 738
 739 int mthca_QUERY_FW(struct mthca_dev *dev, u8 *status)
 740 {
 741         struct mthca_mailbox *mailbox;
 742         u32 *outbox;
 743         u64 base;
 744         u32 tmp;
 745         int err = 0;
 746         u8 lg;
 747         int i;
 748
 749 #define QUERY_FW_OUT_SIZE             0x100
 750 #define QUERY_FW_VER_OFFSET            0x00
 751 #define QUERY_FW_MAX_CMD_OFFSET        0x0f
 752 #define QUERY_FW_ERR_START_OFFSET      0x30
 753 #define QUERY_FW_ERR_SIZE_OFFSET       0x38
 754
 755 #define QUERY_FW_CMD_DB_EN_OFFSET      0x10
 756 #define QUERY_FW_CMD_DB_OFFSET         0x50
 757 #define QUERY_FW_CMD_DB_BASE           0x60
 758
 759 #define QUERY_FW_START_OFFSET          0x20
 760 #define QUERY_FW_END_OFFSET            0x28
 761
 762 #define QUERY_FW_SIZE_OFFSET           0x00
 763 #define QUERY_FW_CLR_INT_BASE_OFFSET   0x20
 764 #define QUERY_FW_EQ_ARM_BASE_OFFSET    0x40
 765 #define QUERY_FW_EQ_SET_CI_BASE_OFFSET 0x48
 766
 767         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 768         if (IS_ERR(mailbox))
 769                 return PTR_ERR(mailbox);
 770         outbox = mailbox->buf;
 771
 772         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_FW,
 773                             CMD_TIME_CLASS_A, status);
 774
 775         if (err)
 776                 goto out;
 777
 778         MTHCA_GET(dev->fw_ver,   outbox, QUERY_FW_VER_OFFSET);
 779         /*
 780          * FW subminor version is at more significant bits than minor
 781          * version, so swap here.
 782          */
 783         dev->fw_ver = (dev->fw_ver & 0xffff00000000ull) |
 784                 ((dev->fw_ver & 0xffff0000ull) >> 16) |
 785                 ((dev->fw_ver & 0x0000ffffull) << 16);
 786
 787         MTHCA_GET(lg, outbox, QUERY_FW_MAX_CMD_OFFSET);
 788         dev->cmd.max_cmds = 1 << lg;
 789
 790         mthca_dbg(dev, "FW version %012llx, max commands %d\n",
 791                   (unsigned long long) dev->fw_ver, dev->cmd.max_cmds);
 792
 793         MTHCA_GET(dev->catas_err.addr, outbox, QUERY_FW_ERR_START_OFFSET);
 794         MTHCA_GET(dev->catas_err.size, outbox, QUERY_FW_ERR_SIZE_OFFSET);
 795
 796         mthca_dbg(dev, "Catastrophic error buffer at 0x%llx, size 0x%x\n",
 797                   (unsigned long long) dev->catas_err.addr, dev->catas_err.size);
 798
 799         MTHCA_GET(tmp, outbox, QUERY_FW_CMD_DB_EN_OFFSET);
 800         if (tmp & 0x1) {
 801                 mthca_dbg(dev, "FW supports commands through doorbells\n");
 802
 803                 MTHCA_GET(base, outbox, QUERY_FW_CMD_DB_BASE);
 804                 for (i = 0; i < MTHCA_CMD_NUM_DBELL_DWORDS; ++i)
 805                         MTHCA_GET(dev->cmd.dbell_offsets[i], outbox,
 806                                   QUERY_FW_CMD_DB_OFFSET + (i << 1));
 807
 808                 mthca_setup_cmd_doorbells(dev, base);
 809         }
 810
 811         if (mthca_is_memfree(dev)) {
 812                 MTHCA_GET(dev->fw.arbel.fw_pages,       outbox, QUERY_FW_SIZE_OFFSET);
 813                 MTHCA_GET(dev->fw.arbel.clr_int_base,   outbox, QUERY_FW_CLR_INT_BASE_OFFSET);
 814                 MTHCA_GET(dev->fw.arbel.eq_arm_base,    outbox, QUERY_FW_EQ_ARM_BASE_OFFSET);
 815                 MTHCA_GET(dev->fw.arbel.eq_set_ci_base, outbox, QUERY_FW_EQ_SET_CI_BASE_OFFSET);
 816                 mthca_dbg(dev, "FW size %d KB\n", dev->fw.arbel.fw_pages << 2);
 817
 818                 /*
 819                  * Round up number of system pages needed in case
 820                  * MTHCA_ICM_PAGE_SIZE < PAGE_SIZE.
 821                  */
 822                 dev->fw.arbel.fw_pages =
 823                         ALIGN(dev->fw.arbel.fw_pages, PAGE_SIZE / MTHCA_ICM_PAGE_SIZE) >>
 824                                 (PAGE_SHIFT - MTHCA_ICM_PAGE_SHIFT);
 825
 826                 mthca_dbg(dev, "Clear int @ %llx, EQ arm @ %llx, EQ set CI @ %llx\n",
 827                           (unsigned long long) dev->fw.arbel.clr_int_base,
 828                           (unsigned long long) dev->fw.arbel.eq_arm_base,
 829                           (unsigned long long) dev->fw.arbel.eq_set_ci_base);
 830         } else {
 831                 MTHCA_GET(dev->fw.tavor.fw_start, outbox, QUERY_FW_START_OFFSET);
 832                 MTHCA_GET(dev->fw.tavor.fw_end,   outbox, QUERY_FW_END_OFFSET);
 833
 834                 mthca_dbg(dev, "FW size %d KB (start %llx, end %llx)\n",
 835                           (int) ((dev->fw.tavor.fw_end - dev->fw.tavor.fw_start) >> 10),
 836                           (unsigned long long) dev->fw.tavor.fw_start,
 837                           (unsigned long long) dev->fw.tavor.fw_end);
 838         }
 839
 840 out:
 841         mthca_free_mailbox(dev, mailbox);
 842         return err;
 843 }
 844
 845 int mthca_ENABLE_LAM(struct mthca_dev *dev, u8 *status)
 846 {
 847         struct mthca_mailbox *mailbox;
 848         u8 info;
 849         u32 *outbox;
 850         int err = 0;
 851
 852 #define ENABLE_LAM_OUT_SIZE         0x100
 853 #define ENABLE_LAM_START_OFFSET     0x00
 854 #define ENABLE_LAM_END_OFFSET       0x08
 855 #define ENABLE_LAM_INFO_OFFSET      0x13
 856
 857 #define ENABLE_LAM_INFO_HIDDEN_FLAG (1 << 4)
 858 #define ENABLE_LAM_INFO_ECC_MASK    0x3
 859
 860         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 861         if (IS_ERR(mailbox))
 862                 return PTR_ERR(mailbox);
 863         outbox = mailbox->buf;
 864
 865         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_ENABLE_LAM,
 866                             CMD_TIME_CLASS_C, status);
 867
 868         if (err)
 869                 goto out;
 870
 871         if (*status == MTHCA_CMD_STAT_LAM_NOT_PRE)
 872                 goto out;
 873
 874         MTHCA_GET(dev->ddr_start, outbox, ENABLE_LAM_START_OFFSET);
 875         MTHCA_GET(dev->ddr_end,   outbox, ENABLE_LAM_END_OFFSET);
 876         MTHCA_GET(info,           outbox, ENABLE_LAM_INFO_OFFSET);
 877
 878         if (!!(info & ENABLE_LAM_INFO_HIDDEN_FLAG) !=
 879             !!(dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) {
 880                 mthca_info(dev, "FW reports that HCA-attached memory "
 881                            "is %s hidden; does not match PCI config\n",
 882                            (info & ENABLE_LAM_INFO_HIDDEN_FLAG) ?
 883                            "" : "not");
 884         }
 885         if (info & ENABLE_LAM_INFO_HIDDEN_FLAG)
 886                 mthca_dbg(dev, "HCA-attached memory is hidden.\n");
 887
 888         mthca_dbg(dev, "HCA memory size %d KB (start %llx, end %llx)\n",
 889                   (int) ((dev->ddr_end - dev->ddr_start) >> 10),
 890                   (unsigned long long) dev->ddr_start,
 891                   (unsigned long long) dev->ddr_end);
 892
 893 out:
 894         mthca_free_mailbox(dev, mailbox);
 895         return err;
 896 }
 897
 898 int mthca_DISABLE_LAM(struct mthca_dev *dev, u8 *status)
 899 {
 900         return mthca_cmd(dev, 0, 0, 0, CMD_SYS_DIS, CMD_TIME_CLASS_C, status);
 901 }
 902
 903 int mthca_QUERY_DDR(struct mthca_dev *dev, u8 *status)
 904 {
 905         struct mthca_mailbox *mailbox;
 906         u8 info;
 907         u32 *outbox;
 908         int err = 0;
 909
 910 #define QUERY_DDR_OUT_SIZE         0x100
 911 #define QUERY_DDR_START_OFFSET     0x00
 912 #define QUERY_DDR_END_OFFSET       0x08
 913 #define QUERY_DDR_INFO_OFFSET      0x13
 914
 915 #define QUERY_DDR_INFO_HIDDEN_FLAG (1 << 4)
 916 #define QUERY_DDR_INFO_ECC_MASK    0x3
 917
 918         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 919         if (IS_ERR(mailbox))
 920                 return PTR_ERR(mailbox);
 921         outbox = mailbox->buf;
 922
 923         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_DDR,
 924                             CMD_TIME_CLASS_A, status);
 925
 926         if (err)
 927                 goto out;
 928
 929         MTHCA_GET(dev->ddr_start, outbox, QUERY_DDR_START_OFFSET);
 930         MTHCA_GET(dev->ddr_end,   outbox, QUERY_DDR_END_OFFSET);
 931         MTHCA_GET(info,           outbox, QUERY_DDR_INFO_OFFSET);
 932
 933         if (!!(info & QUERY_DDR_INFO_HIDDEN_FLAG) !=
 934             !!(dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) {
 935                 mthca_info(dev, "FW reports that HCA-attached memory "
 936                            "is %s hidden; does not match PCI config\n",
 937                            (info & QUERY_DDR_INFO_HIDDEN_FLAG) ?
 938                            "" : "not");
 939         }
 940         if (info & QUERY_DDR_INFO_HIDDEN_FLAG)
 941                 mthca_dbg(dev, "HCA-attached memory is hidden.\n");
 942
 943         mthca_dbg(dev, "HCA memory size %d KB (start %llx, end %llx)\n",
 944                   (int) ((dev->ddr_end - dev->ddr_start) >> 10),
 945                   (unsigned long long) dev->ddr_start,
 946                   (unsigned long long) dev->ddr_end);
 947
 948 out:
 949         mthca_free_mailbox(dev, mailbox);
 950         return err;
 951 }
 952
 953 int mthca_QUERY_DEV_LIM(struct mthca_dev *dev,
 954                         struct mthca_dev_lim *dev_lim, u8 *status)
 955 {
 956         struct mthca_mailbox *mailbox;
 957         u32 *outbox;
 958         u8 field;
 959         u16 size;
 960         u16 stat_rate;
 961         int err;
 962
 963 #define QUERY_DEV_LIM_OUT_SIZE             0x100
 964 #define QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET     0x10
 965 #define QUERY_DEV_LIM_MAX_QP_SZ_OFFSET      0x11
 966 #define QUERY_DEV_LIM_RSVD_QP_OFFSET        0x12
 967 #define QUERY_DEV_LIM_MAX_QP_OFFSET         0x13
 968 #define QUERY_DEV_LIM_RSVD_SRQ_OFFSET       0x14
 969 #define QUERY_DEV_LIM_MAX_SRQ_OFFSET        0x15
 970 #define QUERY_DEV_LIM_RSVD_EEC_OFFSET       0x16
 971 #define QUERY_DEV_LIM_MAX_EEC_OFFSET        0x17
 972 #define QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET      0x19
 973 #define QUERY_DEV_LIM_RSVD_CQ_OFFSET        0x1a
 974 #define QUERY_DEV_LIM_MAX_CQ_OFFSET         0x1b
 975 #define QUERY_DEV_LIM_MAX_MPT_OFFSET        0x1d
 976 #define QUERY_DEV_LIM_RSVD_EQ_OFFSET        0x1e
 977 #define QUERY_DEV_LIM_MAX_EQ_OFFSET         0x1f
 978 #define QUERY_DEV_LIM_RSVD_MTT_OFFSET       0x20
 979 #define QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET     0x21
 980 #define QUERY_DEV_LIM_RSVD_MRW_OFFSET       0x22
 981 #define QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET    0x23
 982 #define QUERY_DEV_LIM_MAX_AV_OFFSET         0x27
 983 #define QUERY_DEV_LIM_MAX_REQ_QP_OFFSET     0x29
 984 #define QUERY_DEV_LIM_MAX_RES_QP_OFFSET     0x2b
 985 #define QUERY_DEV_LIM_MAX_RDMA_OFFSET       0x2f
 986 #define QUERY_DEV_LIM_RSZ_SRQ_OFFSET        0x33
 987 #define QUERY_DEV_LIM_ACK_DELAY_OFFSET      0x35
 988 #define QUERY_DEV_LIM_MTU_WIDTH_OFFSET      0x36
 989 #define QUERY_DEV_LIM_VL_PORT_OFFSET        0x37
 990 #define QUERY_DEV_LIM_MAX_GID_OFFSET        0x3b
 991 #define QUERY_DEV_LIM_RATE_SUPPORT_OFFSET   0x3c
 992 #define QUERY_DEV_LIM_MAX_PKEY_OFFSET       0x3f
 993 #define QUERY_DEV_LIM_FLAGS_OFFSET          0x44
 994 #define QUERY_DEV_LIM_RSVD_UAR_OFFSET       0x48
 995 #define QUERY_DEV_LIM_UAR_SZ_OFFSET         0x49
 996 #define QUERY_DEV_LIM_PAGE_SZ_OFFSET        0x4b
 997 #define QUERY_DEV_LIM_MAX_SG_OFFSET         0x51
 998 #define QUERY_DEV_LIM_MAX_DESC_SZ_OFFSET    0x52
 999 #define QUERY_DEV_LIM_MAX_SG_RQ_OFFSET      0x55
1000 #define QUERY_DEV_LIM_MAX_DESC_SZ_RQ_OFFSET 0x56
1001 #define QUERY_DEV_LIM_MAX_QP_MCG_OFFSET     0x61
1002 #define QUERY_DEV_LIM_RSVD_MCG_OFFSET       0x62
1003 #define QUERY_DEV_LIM_MAX_MCG_OFFSET        0x63
1004 #define QUERY_DEV_LIM_RSVD_PD_OFFSET        0x64
1005 #define QUERY_DEV_LIM_MAX_PD_OFFSET         0x65
1006 #define QUERY_DEV_LIM_RSVD_RDD_OFFSET       0x66
1007 #define QUERY_DEV_LIM_MAX_RDD_OFFSET        0x67
1008 #define QUERY_DEV_LIM_EEC_ENTRY_SZ_OFFSET   0x80
1009 #define QUERY_DEV_LIM_QPC_ENTRY_SZ_OFFSET   0x82
1010 #define QUERY_DEV_LIM_EEEC_ENTRY_SZ_OFFSET  0x84
1011 #define QUERY_DEV_LIM_EQPC_ENTRY_SZ_OFFSET  0x86
1012 #define QUERY_DEV_LIM_EQC_ENTRY_SZ_OFFSET   0x88
1013 #define QUERY_DEV_LIM_CQC_ENTRY_SZ_OFFSET   0x8a
1014 #define QUERY_DEV_LIM_SRQ_ENTRY_SZ_OFFSET   0x8c
1015 #define QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET   0x8e
1016 #define QUERY_DEV_LIM_MTT_ENTRY_SZ_OFFSET   0x90
1017 #define QUERY_DEV_LIM_MPT_ENTRY_SZ_OFFSET   0x92
1018 #define QUERY_DEV_LIM_PBL_SZ_OFFSET         0x96
1019 #define QUERY_DEV_LIM_BMME_FLAGS_OFFSET     0x97
1020 #define QUERY_DEV_LIM_RSVD_LKEY_OFFSET      0x98
1021 #define QUERY_DEV_LIM_LAMR_OFFSET           0x9f
1022 #define QUERY_DEV_LIM_MAX_ICM_SZ_OFFSET     0xa0
1023
1024         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1025         if (IS_ERR(mailbox))
1026                 return PTR_ERR(mailbox);
1027         outbox = mailbox->buf;
1028
1029         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_DEV_LIM,
1030                             CMD_TIME_CLASS_A, status);
1031
1032         if (err)
1033                 goto out;
1034
1035         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_QP_OFFSET);
1036         dev_lim->reserved_qps = 1 << (field & 0xf);
1037         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_OFFSET);
1038         dev_lim->max_qps = 1 << (field & 0x1f);
1039         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_SRQ_OFFSET);
1040         dev_lim->reserved_srqs = 1 << (field >> 4);
1041         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_OFFSET);
1042         dev_lim->max_srqs = 1 << (field & 0x1f);
1043         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EEC_OFFSET);
1044         dev_lim->reserved_eecs = 1 << (field & 0xf);
1045         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EEC_OFFSET);
1046         dev_lim->max_eecs = 1 << (field & 0x1f);
1047         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET);
1048         dev_lim->max_cq_sz = 1 << field;
1049         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_CQ_OFFSET);
1050         dev_lim->reserved_cqs = 1 << (field & 0xf);
1051         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_OFFSET);
1052         dev_lim->max_cqs = 1 << (field & 0x1f);
1053         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MPT_OFFSET);
1054         dev_lim->max_mpts = 1 << (field & 0x3f);
1055         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EQ_OFFSET);
1056         dev_lim->reserved_eqs = 1 << (field & 0xf);
1057         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EQ_OFFSET);
1058         dev_lim->max_eqs = 1 << (field & 0x7);
1059         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MTT_OFFSET);
1060         if (mthca_is_memfree(dev))
1061                 dev_lim->reserved_mtts = ALIGN((1 << (field >> 4)) * sizeof(u64),
1062                                                MTHCA_MTT_SEG_SIZE) / MTHCA_MTT_SEG_SIZE;
1063         else
1064                 dev_lim->reserved_mtts = 1 << (field >> 4);
1065         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET);
1066         dev_lim->max_mrw_sz = 1 << field;
1067         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MRW_OFFSET);
1068         dev_lim->reserved_mrws = 1 << (field & 0xf);
1069         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET);
1070         dev_lim->max_mtt_seg = 1 << (field & 0x3f);
1071         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_REQ_QP_OFFSET);
1072         dev_lim->max_requester_per_qp = 1 << (field & 0x3f);
1073         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RES_QP_OFFSET);
1074         dev_lim->max_responder_per_qp = 1 << (field & 0x3f);
1075         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RDMA_OFFSET);
1076         dev_lim->max_rdma_global = 1 << (field & 0x3f);
1077         MTHCA_GET(field, outbox, QUERY_DEV_LIM_ACK_DELAY_OFFSET);
1078         dev_lim->local_ca_ack_delay = field & 0x1f;
1079         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MTU_WIDTH_OFFSET);
1080         dev_lim->max_mtu        = field >> 4;
1081         dev_lim->max_port_width = field & 0xf;
1082         MTHCA_GET(field, outbox, QUERY_DEV_LIM_VL_PORT_OFFSET);
1083         dev_lim->max_vl    = field >> 4;
1084         dev_lim->num_ports = field & 0xf;
1085         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_GID_OFFSET);
1086         dev_lim->max_gids = 1 << (field & 0xf);
1087         MTHCA_GET(stat_rate, outbox, QUERY_DEV_LIM_RATE_SUPPORT_OFFSET);
1088         dev_lim->stat_rate_support = stat_rate;
1089         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_PKEY_OFFSET);
1090         dev_lim->max_pkeys = 1 << (field & 0xf);
1091         MTHCA_GET(dev_lim->flags, outbox, QUERY_DEV_LIM_FLAGS_OFFSET);
1092         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_UAR_OFFSET);
1093         dev_lim->reserved_uars = field >> 4;
1094         MTHCA_GET(field, outbox, QUERY_DEV_LIM_UAR_SZ_OFFSET);
1095         dev_lim->uar_size = 1 << ((field & 0x3f) + 20);
1096         MTHCA_GET(field, outbox, QUERY_DEV_LIM_PAGE_SZ_OFFSET);
1097         dev_lim->min_page_sz = 1 << field;
1098         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SG_OFFSET);
1099         dev_lim->max_sg = field;
1100
1101         MTHCA_GET(size, outbox, QUERY_DEV_LIM_MAX_DESC_SZ_OFFSET);
1102         dev_lim->max_desc_sz = size;
1103
1104         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_MCG_OFFSET);
1105         dev_lim->max_qp_per_mcg = 1 << field;
1106         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MCG_OFFSET);
1107         dev_lim->reserved_mgms = field & 0xf;
1108         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MCG_OFFSET);
1109         dev_lim->max_mcgs = 1 << field;
1110         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_PD_OFFSET);
1111         dev_lim->reserved_pds = field >> 4;
1112         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_PD_OFFSET);
1113         dev_lim->max_pds = 1 << (field & 0x3f);
1114         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_RDD_OFFSET);
1115         dev_lim->reserved_rdds = field >> 4;
1116         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RDD_OFFSET);
1117         dev_lim->max_rdds = 1 << (field & 0x3f);
1118
1119         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EEC_ENTRY_SZ_OFFSET);
1120         dev_lim->eec_entry_sz = size;
1121         MTHCA_GET(size, outbox, QUERY_DEV_LIM_QPC_ENTRY_SZ_OFFSET);
1122         dev_lim->qpc_entry_sz = size;
1123         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EEEC_ENTRY_SZ_OFFSET);
1124         dev_lim->eeec_entry_sz = size;
1125         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EQPC_ENTRY_SZ_OFFSET);
1126         dev_lim->eqpc_entry_sz = size;
1127         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EQC_ENTRY_SZ_OFFSET);
1128         dev_lim->eqc_entry_sz = size;
1129         MTHCA_GET(size, outbox, QUERY_DEV_LIM_CQC_ENTRY_SZ_OFFSET);
1130         dev_lim->cqc_entry_sz = size;
1131         MTHCA_GET(size, outbox, QUERY_DEV_LIM_SRQ_ENTRY_SZ_OFFSET);
1132         dev_lim->srq_entry_sz = size;
1133         MTHCA_GET(size, outbox, QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET);
1134         dev_lim->uar_scratch_entry_sz = size;
1135
1136         if (mthca_is_memfree(dev)) {
1137                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET);
1138                 dev_lim->max_srq_sz = 1 << field;
1139                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET);
1140                 dev_lim->max_qp_sz = 1 << field;
1141                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSZ_SRQ_OFFSET);
1142                 dev_lim->hca.arbel.resize_srq = field & 1;
1143                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SG_RQ_OFFSET);
1144                 dev_lim->max_sg = min_t(int, field, dev_lim->max_sg);
1145                 MTHCA_GET(size, outbox, QUERY_DEV_LIM_MAX_DESC_SZ_RQ_OFFSET);
1146                 dev_lim->max_desc_sz = min_t(int, size, dev_lim->max_desc_sz);
1147                 MTHCA_GET(size, outbox, QUERY_DEV_LIM_MPT_ENTRY_SZ_OFFSET);
1148                 dev_lim->mpt_entry_sz = size;
1149                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_PBL_SZ_OFFSET);
1150                 dev_lim->hca.arbel.max_pbl_sz = 1 << (field & 0x3f);
1151                 MTHCA_GET(dev_lim->hca.arbel.bmme_flags, outbox,
1152                           QUERY_DEV_LIM_BMME_FLAGS_OFFSET);
1153                 MTHCA_GET(dev_lim->hca.arbel.reserved_lkey, outbox,
1154                           QUERY_DEV_LIM_RSVD_LKEY_OFFSET);
1155                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_LAMR_OFFSET);
1156                 dev_lim->hca.arbel.lam_required = field & 1;
1157                 MTHCA_GET(dev_lim->hca.arbel.max_icm_sz, outbox,
1158                           QUERY_DEV_LIM_MAX_ICM_SZ_OFFSET);
1159
1160                 if (dev_lim->hca.arbel.bmme_flags & 1)
1161                         mthca_dbg(dev, "Base MM extensions: yes "
1162                                   "(flags %d, max PBL %d, rsvd L_Key %08x)\n",
1163                                   dev_lim->hca.arbel.bmme_flags,
1164                                   dev_lim->hca.arbel.max_pbl_sz,
1165                                   dev_lim->hca.arbel.reserved_lkey);
1166                 else
1167                         mthca_dbg(dev, "Base MM extensions: no\n");
1168
1169                 mthca_dbg(dev, "Max ICM size %lld MB\n",
1170                           (unsigned long long) dev_lim->hca.arbel.max_icm_sz >> 20);
1171         } else {
1172                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET);
1173                 dev_lim->max_srq_sz = (1 << field) - 1;
1174                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET);
1175                 dev_lim->max_qp_sz = (1 << field) - 1;
1176                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_AV_OFFSET);
1177                 dev_lim->hca.tavor.max_avs = 1 << (field & 0x3f);
1178                 dev_lim->mpt_entry_sz = MTHCA_MPT_ENTRY_SIZE;
1179         }
1180
1181         mthca_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
1182                   dev_lim->max_qps, dev_lim->reserved_qps, dev_lim->qpc_entry_sz);
1183         mthca_dbg(dev, "Max SRQs: %d, reserved SRQs: %d, entry size: %d\n",
1184                   dev_lim->max_srqs, dev_lim->reserved_srqs, dev_lim->srq_entry_sz);
1185         mthca_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
1186                   dev_lim->max_cqs, dev_lim->reserved_cqs, dev_lim->cqc_entry_sz);
1187         mthca_dbg(dev, "Max EQs: %d, reserved EQs: %d, entry size: %d\n",
1188                   dev_lim->max_eqs, dev_lim->reserved_eqs, dev_lim->eqc_entry_sz);
1189         mthca_dbg(dev, "reserved MPTs: %d, reserved MTTs: %d\n",
1190                   dev_lim->reserved_mrws, dev_lim->reserved_mtts);
1191         mthca_dbg(dev, "Max PDs: %d, reserved PDs: %d, reserved UARs: %d\n",
1192                   dev_lim->max_pds, dev_lim->reserved_pds, dev_lim->reserved_uars);
1193         mthca_dbg(dev, "Max QP/MCG: %d, reserved MGMs: %d\n",
1194                   dev_lim->max_pds, dev_lim->reserved_mgms);
1195         mthca_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
1196                   dev_lim->max_cq_sz, dev_lim->max_qp_sz, dev_lim->max_srq_sz);
1197
1198         mthca_dbg(dev, "Flags: %08x\n", dev_lim->flags);
1199
1200 out:
1201         mthca_free_mailbox(dev, mailbox);
1202         return err;
1203 }
1204
1205 static void get_board_id(void *vsd, char *board_id)
1206 {
1207         int i;
1208
1209 #define VSD_OFFSET_SIG1         0x00
1210 #define VSD_OFFSET_SIG2         0xde
1211 #define VSD_OFFSET_MLX_BOARD_ID 0xd0
1212 #define VSD_OFFSET_TS_BOARD_ID  0x20
1213
1214 #define VSD_SIGNATURE_TOPSPIN   0x5ad
1215
1216         memset(board_id, 0, MTHCA_BOARD_ID_LEN);
1217
1218         if (be16_to_cpup(vsd + VSD_OFFSET_SIG1) == VSD_SIGNATURE_TOPSPIN &&
1219             be16_to_cpup(vsd + VSD_OFFSET_SIG2) == VSD_SIGNATURE_TOPSPIN) {
1220                 strlcpy(board_id, vsd + VSD_OFFSET_TS_BOARD_ID, MTHCA_BOARD_ID_LEN);
1221         } else {
1222                 /*
1223                  * The board ID is a string but the firmware byte
1224                  * swaps each 4-byte word before passing it back to
1225                  * us.  Therefore we need to swab it before printing.
1226                  */
1227                 for (i = 0; i < 4; ++i)
1228                         ((u32 *) board_id)[i] =
1229                                 swab32(*(u32 *) (vsd + VSD_OFFSET_MLX_BOARD_ID + i * 4));
1230         }
1231 }
1232
1233 int mthca_QUERY_ADAPTER(struct mthca_dev *dev,
1234                         struct mthca_adapter *adapter, u8 *status)
1235 {
1236         struct mthca_mailbox *mailbox;
1237         u32 *outbox;
1238         int err;
1239
1240 #define QUERY_ADAPTER_OUT_SIZE             0x100
1241 #define QUERY_ADAPTER_VENDOR_ID_OFFSET     0x00
1242 #define QUERY_ADAPTER_DEVICE_ID_OFFSET     0x04
1243 #define QUERY_ADAPTER_REVISION_ID_OFFSET   0x08
1244 #define QUERY_ADAPTER_INTA_PIN_OFFSET      0x10
1245 #define QUERY_ADAPTER_VSD_OFFSET           0x20
1246
1247         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1248         if (IS_ERR(mailbox))
1249                 return PTR_ERR(mailbox);
1250         outbox = mailbox->buf;
1251
1252         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_ADAPTER,
1253                             CMD_TIME_CLASS_A, status);
1254
1255         if (err)
1256                 goto out;
1257
1258         if (!mthca_is_memfree(dev)) {
1259                 MTHCA_GET(adapter->vendor_id, outbox,
1260                           QUERY_ADAPTER_VENDOR_ID_OFFSET);
1261                 MTHCA_GET(adapter->device_id, outbox,
1262                           QUERY_ADAPTER_DEVICE_ID_OFFSET);
1263                 MTHCA_GET(adapter->revision_id, outbox,
1264                           QUERY_ADAPTER_REVISION_ID_OFFSET);
1265         }
1266         MTHCA_GET(adapter->inta_pin, outbox,    QUERY_ADAPTER_INTA_PIN_OFFSET);
1267
1268         get_board_id(outbox + QUERY_ADAPTER_VSD_OFFSET / 4,
1269                      adapter->board_id);
1270
1271 out:
1272         mthca_free_mailbox(dev, mailbox);
1273         return err;
1274 }
1275
1276 int mthca_INIT_HCA(struct mthca_dev *dev,
1277                    struct mthca_init_hca_param *param,
1278                    u8 *status)
1279 {
1280         struct mthca_mailbox *mailbox;
1281         __be32 *inbox;
1282         int err;
1283
1284 #define INIT_HCA_IN_SIZE                 0x200
1285 #define INIT_HCA_FLAGS1_OFFSET           0x00c
1286 #define INIT_HCA_FLAGS2_OFFSET           0x014
1287 #define INIT_HCA_QPC_OFFSET              0x020
1288 #define  INIT_HCA_QPC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x10)
1289 #define  INIT_HCA_LOG_QP_OFFSET          (INIT_HCA_QPC_OFFSET + 0x17)
1290 #define  INIT_HCA_EEC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x20)
1291 #define  INIT_HCA_LOG_EEC_OFFSET         (INIT_HCA_QPC_OFFSET + 0x27)
1292 #define  INIT_HCA_SRQC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x28)
1293 #define  INIT_HCA_LOG_SRQ_OFFSET         (INIT_HCA_QPC_OFFSET + 0x2f)
1294 #define  INIT_HCA_CQC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x30)
1295 #define  INIT_HCA_LOG_CQ_OFFSET          (INIT_HCA_QPC_OFFSET + 0x37)
1296 #define  INIT_HCA_EQPC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x40)
1297 #define  INIT_HCA_EEEC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x50)
1298 #define  INIT_HCA_EQC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x60)
1299 #define  INIT_HCA_LOG_EQ_OFFSET          (INIT_HCA_QPC_OFFSET + 0x67)
1300 #define  INIT_HCA_RDB_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x70)
1301 #define INIT_HCA_UDAV_OFFSET             0x0b0
1302 #define  INIT_HCA_UDAV_LKEY_OFFSET       (INIT_HCA_UDAV_OFFSET + 0x0)
1303 #define  INIT_HCA_UDAV_PD_OFFSET         (INIT_HCA_UDAV_OFFSET + 0x4)
1304 #define INIT_HCA_MCAST_OFFSET            0x0c0
1305 #define  INIT_HCA_MC_BASE_OFFSET         (INIT_HCA_MCAST_OFFSET + 0x00)
1306 #define  INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x12)
1307 #define  INIT_HCA_MC_HASH_SZ_OFFSET      (INIT_HCA_MCAST_OFFSET + 0x16)
1308 #define  INIT_HCA_LOG_MC_TABLE_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x1b)
1309 #define INIT_HCA_TPT_OFFSET              0x0f0
1310 #define  INIT_HCA_MPT_BASE_OFFSET        (INIT_HCA_TPT_OFFSET + 0x00)
1311 #define  INIT_HCA_MTT_SEG_SZ_OFFSET      (INIT_HCA_TPT_OFFSET + 0x09)
1312 #define  INIT_HCA_LOG_MPT_SZ_OFFSET      (INIT_HCA_TPT_OFFSET + 0x0b)
1313 #define  INIT_HCA_MTT_BASE_OFFSET        (INIT_HCA_TPT_OFFSET + 0x10)
1314 #define INIT_HCA_UAR_OFFSET              0x120
1315 #define  INIT_HCA_UAR_BASE_OFFSET        (INIT_HCA_UAR_OFFSET + 0x00)
1316 #define  INIT_HCA_UARC_SZ_OFFSET         (INIT_HCA_UAR_OFFSET + 0x09)
1317 #define  INIT_HCA_LOG_UAR_SZ_OFFSET      (INIT_HCA_UAR_OFFSET + 0x0a)
1318 #define  INIT_HCA_UAR_PAGE_SZ_OFFSET     (INIT_HCA_UAR_OFFSET + 0x0b)
1319 #define  INIT_HCA_UAR_SCATCH_BASE_OFFSET (INIT_HCA_UAR_OFFSET + 0x10)
1320 #define  INIT_HCA_UAR_CTX_BASE_OFFSET    (INIT_HCA_UAR_OFFSET + 0x18)
1321
1322         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1323         if (IS_ERR(mailbox))
1324                 return PTR_ERR(mailbox);
1325         inbox = mailbox->buf;
1326
1327         memset(inbox, 0, INIT_HCA_IN_SIZE);
1328
1329         if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
1330                 MTHCA_PUT(inbox, 0x1, INIT_HCA_FLAGS1_OFFSET);
1331
1332 #if defined(__LITTLE_ENDIAN)
1333         *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) &= ~cpu_to_be32(1 << 1);
1334 #elif defined(__BIG_ENDIAN)
1335         *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) |= cpu_to_be32(1 << 1);
1336 #else
1337 #error Host endianness not defined
1338 #endif
1339         /* Check port for UD address vector: */
1340         *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) |= cpu_to_be32(1);
1341
1342         /* We leave wqe_quota, responder_exu, etc as 0 (default) */
1343
1344         /* QPC/EEC/CQC/EQC/RDB attributes */
1345
1346         MTHCA_PUT(inbox, param->qpc_base,     INIT_HCA_QPC_BASE_OFFSET);
1347         MTHCA_PUT(inbox, param->log_num_qps,  INIT_HCA_LOG_QP_OFFSET);
1348         MTHCA_PUT(inbox, param->eec_base,     INIT_HCA_EEC_BASE_OFFSET);
1349         MTHCA_PUT(inbox, param->log_num_eecs, INIT_HCA_LOG_EEC_OFFSET);
1350         MTHCA_PUT(inbox, param->srqc_base,    INIT_HCA_SRQC_BASE_OFFSET);
1351         MTHCA_PUT(inbox, param->log_num_srqs, INIT_HCA_LOG_SRQ_OFFSET);
1352         MTHCA_PUT(inbox, param->cqc_base,     INIT_HCA_CQC_BASE_OFFSET);
1353         MTHCA_PUT(inbox, param->log_num_cqs,  INIT_HCA_LOG_CQ_OFFSET);
1354         MTHCA_PUT(inbox, param->eqpc_base,    INIT_HCA_EQPC_BASE_OFFSET);
1355         MTHCA_PUT(inbox, param->eeec_base,    INIT_HCA_EEEC_BASE_OFFSET);
1356         MTHCA_PUT(inbox, param->eqc_base,     INIT_HCA_EQC_BASE_OFFSET);
1357         MTHCA_PUT(inbox, param->log_num_eqs,  INIT_HCA_LOG_EQ_OFFSET);
1358         MTHCA_PUT(inbox, param->rdb_base,     INIT_HCA_RDB_BASE_OFFSET);
1359
1360         /* UD AV attributes */
1361
1362         /* multicast attributes */
1363
1364         MTHCA_PUT(inbox, param->mc_base,         INIT_HCA_MC_BASE_OFFSET);
1365         MTHCA_PUT(inbox, param->log_mc_entry_sz, INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET);
1366         MTHCA_PUT(inbox, param->mc_hash_sz,      INIT_HCA_MC_HASH_SZ_OFFSET);
1367         MTHCA_PUT(inbox, param->log_mc_table_sz, INIT_HCA_LOG_MC_TABLE_SZ_OFFSET);
1368
1369         /* TPT attributes */
1370
1371         MTHCA_PUT(inbox, param->mpt_base,   INIT_HCA_MPT_BASE_OFFSET);
1372         if (!mthca_is_memfree(dev))
1373                 MTHCA_PUT(inbox, param->mtt_seg_sz, INIT_HCA_MTT_SEG_SZ_OFFSET);
1374         MTHCA_PUT(inbox, param->log_mpt_sz, INIT_HCA_LOG_MPT_SZ_OFFSET);
1375         MTHCA_PUT(inbox, param->mtt_base,   INIT_HCA_MTT_BASE_OFFSET);
1376
1377         /* UAR attributes */
1378         {
1379                 u8 uar_page_sz = PAGE_SHIFT - 12;
1380                 MTHCA_PUT(inbox, uar_page_sz, INIT_HCA_UAR_PAGE_SZ_OFFSET);
1381         }
1382
1383         MTHCA_PUT(inbox, param->uar_scratch_base, INIT_HCA_UAR_SCATCH_BASE_OFFSET);
1384
1385         if (mthca_is_memfree(dev)) {
1386                 MTHCA_PUT(inbox, param->log_uarc_sz, INIT_HCA_UARC_SZ_OFFSET);
1387                 MTHCA_PUT(inbox, param->log_uar_sz,  INIT_HCA_LOG_UAR_SZ_OFFSET);
1388                 MTHCA_PUT(inbox, param->uarc_base,   INIT_HCA_UAR_CTX_BASE_OFFSET);
1389         }
1390
1391         err = mthca_cmd(dev, mailbox->dma, 0, 0, CMD_INIT_HCA, HZ, status);
1392
1393         mthca_free_mailbox(dev, mailbox);
1394         return err;
1395 }
1396
1397 int mthca_INIT_IB(struct mthca_dev *dev,
1398                   struct mthca_init_ib_param *param,
1399                   int port, u8 *status)
1400 {
1401         struct mthca_mailbox *mailbox;
1402         u32 *inbox;
1403         int err;
1404         u32 flags;
1405
1406 #define INIT_IB_IN_SIZE          56
1407 #define INIT_IB_FLAGS_OFFSET     0x00
1408 #define INIT_IB_FLAG_SIG         (1 << 18)
1409 #define INIT_IB_FLAG_NG          (1 << 17)
1410 #define INIT_IB_FLAG_G0          (1 << 16)
1411 #define INIT_IB_VL_SHIFT         4
1412 #define INIT_IB_PORT_WIDTH_SHIFT 8
1413 #define INIT_IB_MTU_SHIFT        12
1414 #define INIT_IB_MAX_GID_OFFSET   0x06
1415 #define INIT_IB_MAX_PKEY_OFFSET  0x0a
1416 #define INIT_IB_GUID0_OFFSET     0x10
1417 #define INIT_IB_NODE_GUID_OFFSET 0x18
1418 #define INIT_IB_SI_GUID_OFFSET   0x20
1419
1420         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1421         if (IS_ERR(mailbox))
1422                 return PTR_ERR(mailbox);
1423         inbox = mailbox->buf;
1424
1425         memset(inbox, 0, INIT_IB_IN_SIZE);
1426
1427         flags = 0;
1428         flags |= param->set_guid0     ? INIT_IB_FLAG_G0  : 0;
1429         flags |= param->set_node_guid ? INIT_IB_FLAG_NG  : 0;
1430         flags |= param->set_si_guid   ? INIT_IB_FLAG_SIG : 0;
1431         flags |= param->vl_cap << INIT_IB_VL_SHIFT;
1432         flags |= param->port_width << INIT_IB_PORT_WIDTH_SHIFT;
1433         flags |= param->mtu_cap << INIT_IB_MTU_SHIFT;
1434         MTHCA_PUT(inbox, flags, INIT_IB_FLAGS_OFFSET);
1435
1436         MTHCA_PUT(inbox, param->gid_cap,   INIT_IB_MAX_GID_OFFSET);
1437         MTHCA_PUT(inbox, param->pkey_cap,  INIT_IB_MAX_PKEY_OFFSET);
1438         MTHCA_PUT(inbox, param->guid0,     INIT_IB_GUID0_OFFSET);
1439         MTHCA_PUT(inbox, param->node_guid, INIT_IB_NODE_GUID_OFFSET);
1440         MTHCA_PUT(inbox, param->si_guid,   INIT_IB_SI_GUID_OFFSET);
1441
1442         err = mthca_cmd(dev, mailbox->dma, port, 0, CMD_INIT_IB,
1443                         CMD_TIME_CLASS_A, status);
1444
1445         mthca_free_mailbox(dev, mailbox);
1446         return err;
1447 }
1448
1449 int mthca_CLOSE_IB(struct mthca_dev *dev, int port, u8 *status)
1450 {
1451         return mthca_cmd(dev, 0, port, 0, CMD_CLOSE_IB, HZ, status);
1452 }
1453
1454 int mthca_CLOSE_HCA(struct mthca_dev *dev, int panic, u8 *status)
1455 {
1456         return mthca_cmd(dev, 0, 0, panic, CMD_CLOSE_HCA, HZ, status);
1457 }
1458
1459 int mthca_SET_IB(struct mthca_dev *dev, struct mthca_set_ib_param *param,
1460                  int port, u8 *status)
1461 {
1462         struct mthca_mailbox *mailbox;
1463         u32 *inbox;
1464         int err;
1465         u32 flags = 0;
1466
1467 #define SET_IB_IN_SIZE         0x40
1468 #define SET_IB_FLAGS_OFFSET    0x00
1469 #define SET_IB_FLAG_SIG        (1 << 18)
1470 #define SET_IB_FLAG_RQK        (1 <<  0)
1471 #define SET_IB_CAP_MASK_OFFSET 0x04
1472 #define SET_IB_SI_GUID_OFFSET  0x08
1473
1474         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1475         if (IS_ERR(mailbox))
1476                 return PTR_ERR(mailbox);
1477         inbox = mailbox->buf;
1478
1479         memset(inbox, 0, SET_IB_IN_SIZE);
1480
1481         flags |= param->set_si_guid     ? SET_IB_FLAG_SIG : 0;
1482         flags |= param->reset_qkey_viol ? SET_IB_FLAG_RQK : 0;
1483         MTHCA_PUT(inbox, flags, SET_IB_FLAGS_OFFSET);
1484
1485         MTHCA_PUT(inbox, param->cap_mask, SET_IB_CAP_MASK_OFFSET);
1486         MTHCA_PUT(inbox, param->si_guid,  SET_IB_SI_GUID_OFFSET);
1487
1488         err = mthca_cmd(dev, mailbox->dma, port, 0, CMD_SET_IB,
1489                         CMD_TIME_CLASS_B, status);
1490
1491         mthca_free_mailbox(dev, mailbox);
1492         return err;
1493 }
1494
1495 int mthca_MAP_ICM(struct mthca_dev *dev, struct mthca_icm *icm, u64 virt, u8 *status)
1496 {
1497         return mthca_map_cmd(dev, CMD_MAP_ICM, icm, virt, status);
1498 }
1499
1500 int mthca_MAP_ICM_page(struct mthca_dev *dev, u64 dma_addr, u64 virt, u8 *status)
1501 {
1502         struct mthca_mailbox *mailbox;
1503         __be64 *inbox;
1504         int err;
1505
1506         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1507         if (IS_ERR(mailbox))
1508                 return PTR_ERR(mailbox);
1509         inbox = mailbox->buf;
1510
1511         inbox[0] = cpu_to_be64(virt);
1512         inbox[1] = cpu_to_be64(dma_addr);
1513
1514         err = mthca_cmd(dev, mailbox->dma, 1, 0, CMD_MAP_ICM,
1515                         CMD_TIME_CLASS_B, status);
1516
1517         mthca_free_mailbox(dev, mailbox);
1518
1519         if (!err)
1520                 mthca_dbg(dev, "Mapped page at %llx to %llx for ICM.\n",
1521                           (unsigned long long) dma_addr, (unsigned long long) virt);
1522
1523         return err;
1524 }
1525
1526 int mthca_UNMAP_ICM(struct mthca_dev *dev, u64 virt, u32 page_count, u8 *status)
1527 {
1528         mthca_dbg(dev, "Unmapping %d pages at %llx from ICM.\n",
1529                   page_count, (unsigned long long) virt);
1530
1531         return mthca_cmd(dev, virt, page_count, 0, CMD_UNMAP_ICM, CMD_TIME_CLASS_B, status);
1532 }
1533
1534 int mthca_MAP_ICM_AUX(struct mthca_dev *dev, struct mthca_icm *icm, u8 *status)
1535 {
1536         return mthca_map_cmd(dev, CMD_MAP_ICM_AUX, icm, -1, status);
1537 }
1538
1539 int mthca_UNMAP_ICM_AUX(struct mthca_dev *dev, u8 *status)
1540 {
1541         return mthca_cmd(dev, 0, 0, 0, CMD_UNMAP_ICM_AUX, CMD_TIME_CLASS_B, status);
1542 }
1543
1544 int mthca_SET_ICM_SIZE(struct mthca_dev *dev, u64 icm_size, u64 *aux_pages,
1545                        u8 *status)
1546 {
1547         int ret = mthca_cmd_imm(dev, icm_size, aux_pages, 0, 0, CMD_SET_ICM_SIZE,
1548                                 CMD_TIME_CLASS_A, status);
1549
1550         if (ret || status)
1551                 return ret;
1552
1553         /*
1554          * Round up number of system pages needed in case
1555          * MTHCA_ICM_PAGE_SIZE < PAGE_SIZE.
1556          */
1557         *aux_pages = ALIGN(*aux_pages, PAGE_SIZE / MTHCA_ICM_PAGE_SIZE) >>
1558                 (PAGE_SHIFT - MTHCA_ICM_PAGE_SHIFT);
1559
1560         return 0;
1561 }
1562
1563 int mthca_SW2HW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1564                     int mpt_index, u8 *status)
1565 {
1566         return mthca_cmd(dev, mailbox->dma, mpt_index, 0, CMD_SW2HW_MPT,
1567                          CMD_TIME_CLASS_B, status);
1568 }
1569
1570 int mthca_HW2SW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1571                     int mpt_index, u8 *status)
1572 {
1573         return mthca_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, mpt_index,
1574                              !mailbox, CMD_HW2SW_MPT,
1575                              CMD_TIME_CLASS_B, status);
1576 }
1577
1578 int mthca_WRITE_MTT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1579                     int num_mtt, u8 *status)
1580 {
1581         return mthca_cmd(dev, mailbox->dma, num_mtt, 0, CMD_WRITE_MTT,
1582                          CMD_TIME_CLASS_B, status);
1583 }
1584
1585 int mthca_SYNC_TPT(struct mthca_dev *dev, u8 *status)
1586 {
1587         return mthca_cmd(dev, 0, 0, 0, CMD_SYNC_TPT, CMD_TIME_CLASS_B, status);
1588 }
1589
1590 int mthca_MAP_EQ(struct mthca_dev *dev, u64 event_mask, int unmap,
1591                  int eq_num, u8 *status)
1592 {
1593         mthca_dbg(dev, "%s mask %016llx for eqn %d\n",
1594                   unmap ? "Clearing" : "Setting",
1595                   (unsigned long long) event_mask, eq_num);
1596         return mthca_cmd(dev, event_mask, (unmap << 31) | eq_num,
1597                          0, CMD_MAP_EQ, CMD_TIME_CLASS_B, status);
1598 }
1599
1600 int mthca_SW2HW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1601                    int eq_num, u8 *status)
1602 {
1603         return mthca_cmd(dev, mailbox->dma, eq_num, 0, CMD_SW2HW_EQ,
1604                          CMD_TIME_CLASS_A, status);
1605 }
1606
1607 int mthca_HW2SW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1608                    int eq_num, u8 *status)
1609 {
1610         return mthca_cmd_box(dev, 0, mailbox->dma, eq_num, 0,
1611                              CMD_HW2SW_EQ,
1612                              CMD_TIME_CLASS_A, status);
1613 }
1614
1615 int mthca_SW2HW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1616                    int cq_num, u8 *status)
1617 {
1618         return mthca_cmd(dev, mailbox->dma, cq_num, 0, CMD_SW2HW_CQ,
1619                         CMD_TIME_CLASS_A, status);
1620 }
1621
1622 int mthca_HW2SW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1623                    int cq_num, u8 *status)
1624 {
1625         return mthca_cmd_box(dev, 0, mailbox->dma, cq_num, 0,
1626                              CMD_HW2SW_CQ,
1627                              CMD_TIME_CLASS_A, status);
1628 }
1629
1630 int mthca_RESIZE_CQ(struct mthca_dev *dev, int cq_num, u32 lkey, u8 log_size,
1631                     u8 *status)
1632 {
1633         struct mthca_mailbox *mailbox;
1634         __be32 *inbox;
1635         int err;
1636
1637 #define RESIZE_CQ_IN_SIZE               0x40
1638 #define RESIZE_CQ_LOG_SIZE_OFFSET       0x0c
1639 #define RESIZE_CQ_LKEY_OFFSET           0x1c
1640
1641         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1642         if (IS_ERR(mailbox))
1643                 return PTR_ERR(mailbox);
1644         inbox = mailbox->buf;
1645
1646         memset(inbox, 0, RESIZE_CQ_IN_SIZE);
1647         /*
1648          * Leave start address fields zeroed out -- mthca assumes that
1649          * MRs for CQs always start at virtual address 0.
1650          */
1651         MTHCA_PUT(inbox, log_size, RESIZE_CQ_LOG_SIZE_OFFSET);
1652         MTHCA_PUT(inbox, lkey,     RESIZE_CQ_LKEY_OFFSET);
1653
1654         err = mthca_cmd(dev, mailbox->dma, cq_num, 1, CMD_RESIZE_CQ,
1655                         CMD_TIME_CLASS_B, status);
1656
1657         mthca_free_mailbox(dev, mailbox);
1658         return err;
1659 }
1660
1661 int mthca_SW2HW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1662                     int srq_num, u8 *status)
1663 {
1664         return mthca_cmd(dev, mailbox->dma, srq_num, 0, CMD_SW2HW_SRQ,
1665                         CMD_TIME_CLASS_A, status);
1666 }
1667
1668 int mthca_HW2SW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1669                     int srq_num, u8 *status)
1670 {
1671         return mthca_cmd_box(dev, 0, mailbox->dma, srq_num, 0,
1672                              CMD_HW2SW_SRQ,
1673                              CMD_TIME_CLASS_A, status);
1674 }
1675
1676 int mthca_QUERY_SRQ(struct mthca_dev *dev, u32 num,
1677                     struct mthca_mailbox *mailbox, u8 *status)
1678 {
1679         return mthca_cmd_box(dev, 0, mailbox->dma, num, 0,
1680                              CMD_QUERY_SRQ, CMD_TIME_CLASS_A, status);
1681 }
1682
1683 int mthca_ARM_SRQ(struct mthca_dev *dev, int srq_num, int limit, u8 *status)
1684 {
1685         return mthca_cmd(dev, limit, srq_num, 0, CMD_ARM_SRQ,
1686                          CMD_TIME_CLASS_B, status);
1687 }
1688
1689 int mthca_MODIFY_QP(struct mthca_dev *dev, enum ib_qp_state cur,
1690                     enum ib_qp_state next, u32 num, int is_ee,
1691                     struct mthca_mailbox *mailbox, u32 optmask,
1692                     u8 *status)
1693 {
1694         static const u16 op[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
1695                 [IB_QPS_RESET] = {
1696                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1697                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1698                         [IB_QPS_INIT]   = CMD_RST2INIT_QPEE,
1699                 },
1700                 [IB_QPS_INIT]  = {
1701                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1702                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1703                         [IB_QPS_INIT]   = CMD_INIT2INIT_QPEE,
1704                         [IB_QPS_RTR]    = CMD_INIT2RTR_QPEE,
1705                 },
1706                 [IB_QPS_RTR]   = {
1707                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1708                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1709                         [IB_QPS_RTS]    = CMD_RTR2RTS_QPEE,
1710                 },
1711                 [IB_QPS_RTS]   = {
1712                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1713                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1714                         [IB_QPS_RTS]    = CMD_RTS2RTS_QPEE,
1715                         [IB_QPS_SQD]    = CMD_RTS2SQD_QPEE,
1716                 },
1717                 [IB_QPS_SQD] = {
1718                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1719                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1720                         [IB_QPS_RTS]    = CMD_SQD2RTS_QPEE,
1721                         [IB_QPS_SQD]    = CMD_SQD2SQD_QPEE,
1722                 },
1723                 [IB_QPS_SQE] = {
1724                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1725                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1726                         [IB_QPS_RTS]    = CMD_SQERR2RTS_QPEE,
1727                 },
1728                 [IB_QPS_ERR] = {
1729                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1730                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1731                 }
1732         };
1733
1734         u8 op_mod = 0;
1735         int my_mailbox = 0;
1736         int err;
1737
1738         if (op[cur][next] == CMD_ERR2RST_QPEE) {
1739                 op_mod = 3;     /* don't write outbox, any->reset */
1740
1741                 /* For debugging */
1742                 if (!mailbox) {
1743                         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1744                         if (!IS_ERR(mailbox)) {
1745                                 my_mailbox = 1;
1746                                 op_mod     = 2; /* write outbox, any->reset */
1747                         } else
1748                                 mailbox = NULL;
1749                 }
1750
1751                 err = mthca_cmd_box(dev, 0, mailbox ? mailbox->dma : 0,
1752                                     (!!is_ee << 24) | num, op_mod,
1753                                     op[cur][next], CMD_TIME_CLASS_C, status);
1754
1755                 if (0 && mailbox) {
1756                         int i;
1757                         mthca_dbg(dev, "Dumping QP context:\n");
1758                         printk(" %08x\n", be32_to_cpup(mailbox->buf));
1759                         for (i = 0; i < 0x100 / 4; ++i) {
1760                                 if (i % 8 == 0)
1761                                         printk("[%02x] ", i * 4);
1762                                 printk(" %08x",
1763                                        be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
1764                                 if ((i + 1) % 8 == 0)
1765                                         printk("\n");
1766                         }
1767                 }
1768
1769                 if (my_mailbox)
1770                         mthca_free_mailbox(dev, mailbox);
1771         } else {
1772                 if (0) {
1773                         int i;
1774                         mthca_dbg(dev, "Dumping QP context:\n");
1775                         printk("  opt param mask: %08x\n", be32_to_cpup(mailbox->buf));
1776                         for (i = 0; i < 0x100 / 4; ++i) {
1777                                 if (i % 8 == 0)
1778                                         printk("  [%02x] ", i * 4);
1779                                 printk(" %08x",
1780                                        be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
1781                                 if ((i + 1) % 8 == 0)
1782                                         printk("\n");
1783                         }
1784                 }
1785
1786                 err = mthca_cmd(dev, mailbox->dma, optmask | (!!is_ee << 24) | num,
1787                                 op_mod, op[cur][next], CMD_TIME_CLASS_C, status);
1788         }
1789
1790         return err;
1791 }
1792
1793 int mthca_QUERY_QP(struct mthca_dev *dev, u32 num, int is_ee,
1794                    struct mthca_mailbox *mailbox, u8 *status)
1795 {
1796         return mthca_cmd_box(dev, 0, mailbox->dma, (!!is_ee << 24) | num, 0,
1797                              CMD_QUERY_QPEE, CMD_TIME_CLASS_A, status);
1798 }
1799
1800 int mthca_CONF_SPECIAL_QP(struct mthca_dev *dev, int type, u32 qpn,
1801                           u8 *status)
1802 {
1803         u8 op_mod;
1804
1805         switch (type) {
1806         case IB_QPT_SMI:
1807                 op_mod = 0;
1808                 break;
1809         case IB_QPT_GSI:
1810                 op_mod = 1;
1811                 break;
1812         case IB_QPT_RAW_IPV6:
1813                 op_mod = 2;
1814                 break;
1815         case IB_QPT_RAW_ETY:
1816                 op_mod = 3;
1817                 break;
1818         default:
1819                 return -EINVAL;
1820         }
1821
1822         return mthca_cmd(dev, 0, qpn, op_mod, CMD_CONF_SPECIAL_QP,
1823                          CMD_TIME_CLASS_B, status);
1824 }
1825
1826 int mthca_MAD_IFC(struct mthca_dev *dev, int ignore_mkey, int ignore_bkey,
1827                   int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
1828                   void *in_mad, void *response_mad, u8 *status)
1829 {
1830         struct mthca_mailbox *inmailbox, *outmailbox;
1831         void *inbox;
1832         int err;
1833         u32 in_modifier = port;
1834         u8 op_modifier = 0;
1835
1836 #define MAD_IFC_BOX_SIZE      0x400
1837 #define MAD_IFC_MY_QPN_OFFSET 0x100
1838 #define MAD_IFC_RQPN_OFFSET   0x108
1839 #define MAD_IFC_SL_OFFSET     0x10c
1840 #define MAD_IFC_G_PATH_OFFSET 0x10d
1841 #define MAD_IFC_RLID_OFFSET   0x10e
1842 #define MAD_IFC_PKEY_OFFSET   0x112
1843 #define MAD_IFC_GRH_OFFSET    0x140
1844
1845         inmailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1846         if (IS_ERR(inmailbox))
1847                 return PTR_ERR(inmailbox);
1848         inbox = inmailbox->buf;
1849
1850         outmailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1851         if (IS_ERR(outmailbox)) {
1852                 mthca_free_mailbox(dev, inmailbox);
1853                 return PTR_ERR(outmailbox);
1854         }
1855
1856         memcpy(inbox, in_mad, 256);
1857
1858         /*
1859          * Key check traps can't be generated unless we have in_wc to
1860          * tell us where to send the trap.
1861          */
1862         if (ignore_mkey || !in_wc)
1863                 op_modifier |= 0x1;
1864         if (ignore_bkey || !in_wc)
1865                 op_modifier |= 0x2;
1866
1867         if (in_wc) {
1868                 u8 val;
1869
1870                 memset(inbox + 256, 0, 256);
1871
1872                 MTHCA_PUT(inbox, in_wc->qp->qp_num, MAD_IFC_MY_QPN_OFFSET);
1873                 MTHCA_PUT(inbox, in_wc->src_qp,     MAD_IFC_RQPN_OFFSET);
1874
1875                 val = in_wc->sl << 4;
1876                 MTHCA_PUT(inbox, val,               MAD_IFC_SL_OFFSET);
1877
1878                 val = in_wc->dlid_path_bits |
1879                         (in_wc->wc_flags & IB_WC_GRH ? 0x80 : 0);
1880                 MTHCA_PUT(inbox, val,               MAD_IFC_G_PATH_OFFSET);
1881
1882                 MTHCA_PUT(inbox, in_wc->slid,       MAD_IFC_RLID_OFFSET);
1883                 MTHCA_PUT(inbox, in_wc->pkey_index, MAD_IFC_PKEY_OFFSET);
1884
1885                 if (in_grh)
1886                         memcpy(inbox + MAD_IFC_GRH_OFFSET, in_grh, 40);
1887
1888                 op_modifier |= 0x4;
1889
1890                 in_modifier |= in_wc->slid << 16;
1891         }
1892
1893         err = mthca_cmd_box(dev, inmailbox->dma, outmailbox->dma,
1894                             in_modifier, op_modifier,
1895                             CMD_MAD_IFC, CMD_TIME_CLASS_C, status);
1896
1897         if (!err && !*status)
1898                 memcpy(response_mad, outmailbox->buf, 256);
1899
1900         mthca_free_mailbox(dev, inmailbox);
1901         mthca_free_mailbox(dev, outmailbox);
1902         return err;
1903 }
1904
1905 int mthca_READ_MGM(struct mthca_dev *dev, int index,
1906                    struct mthca_mailbox *mailbox, u8 *status)
1907 {
1908         return mthca_cmd_box(dev, 0, mailbox->dma, index, 0,
1909                              CMD_READ_MGM, CMD_TIME_CLASS_A, status);
1910 }
1911
1912 int mthca_WRITE_MGM(struct mthca_dev *dev, int index,
1913                     struct mthca_mailbox *mailbox, u8 *status)
1914 {
1915         return mthca_cmd(dev, mailbox->dma, index, 0, CMD_WRITE_MGM,
1916                          CMD_TIME_CLASS_A, status);
1917 }
1918
1919 int mthca_MGID_HASH(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1920                     u16 *hash, u8 *status)
1921 {
1922         u64 imm;
1923         int err;
1924
1925         err = mthca_cmd_imm(dev, mailbox->dma, &imm, 0, 0, CMD_MGID_HASH,
1926                             CMD_TIME_CLASS_A, status);
1927
1928         *hash = imm;
1929         return err;
1930 }
1931
1932 int mthca_NOP(struct mthca_dev *dev, u8 *status)
1933 {
1934         return mthca_cmd(dev, 0, 0x1f, 0, CMD_NOP, msecs_to_jiffies(100), status);
1935 }