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/sched.h>
  38 #include <linux/pci.h>
  39 #include <linux/errno.h>
  40 #include <asm/io.h>
  41 #include <rdma/ib_mad.h>
  42
  43 #include "mthca_dev.h"
  44 #include "mthca_config_reg.h"
  45 #include "mthca_cmd.h"
  46 #include "mthca_memfree.h"
  47
  48 #define CMD_POLL_TOKEN 0xffff
  49
  50 enum {
  51         HCR_IN_PARAM_OFFSET    = 0x00,
  52         HCR_IN_MODIFIER_OFFSET = 0x08,
  53         HCR_OUT_PARAM_OFFSET   = 0x0c,
  54         HCR_TOKEN_OFFSET       = 0x14,
  55         HCR_STATUS_OFFSET      = 0x18,
  56
  57         HCR_OPMOD_SHIFT        = 12,
  58         HCA_E_BIT              = 22,
  59         HCR_GO_BIT             = 23
  60 };
  61
  62 enum {
  63         /* initialization and general commands */
  64         CMD_SYS_EN          = 0x1,
  65         CMD_SYS_DIS         = 0x2,
  66         CMD_MAP_FA          = 0xfff,
  67         CMD_UNMAP_FA        = 0xffe,
  68         CMD_RUN_FW          = 0xff6,
  69         CMD_MOD_STAT_CFG    = 0x34,
  70         CMD_QUERY_DEV_LIM   = 0x3,
  71         CMD_QUERY_FW        = 0x4,
  72         CMD_ENABLE_LAM      = 0xff8,
  73         CMD_DISABLE_LAM     = 0xff7,
  74         CMD_QUERY_DDR       = 0x5,
  75         CMD_QUERY_ADAPTER   = 0x6,
  76         CMD_INIT_HCA        = 0x7,
  77         CMD_CLOSE_HCA       = 0x8,
  78         CMD_INIT_IB         = 0x9,
  79         CMD_CLOSE_IB        = 0xa,
  80         CMD_QUERY_HCA       = 0xb,
  81         CMD_SET_IB          = 0xc,
  82         CMD_ACCESS_DDR      = 0x2e,
  83         CMD_MAP_ICM         = 0xffa,
  84         CMD_UNMAP_ICM       = 0xff9,
  85         CMD_MAP_ICM_AUX     = 0xffc,
  86         CMD_UNMAP_ICM_AUX   = 0xffb,
  87         CMD_SET_ICM_SIZE    = 0xffd,
  88
  89         /* TPT commands */
  90         CMD_SW2HW_MPT       = 0xd,
  91         CMD_QUERY_MPT       = 0xe,
  92         CMD_HW2SW_MPT       = 0xf,
  93         CMD_READ_MTT        = 0x10,
  94         CMD_WRITE_MTT       = 0x11,
  95         CMD_SYNC_TPT        = 0x2f,
  96
  97         /* EQ commands */
  98         CMD_MAP_EQ          = 0x12,
  99         CMD_SW2HW_EQ        = 0x13,
 100         CMD_HW2SW_EQ        = 0x14,
 101         CMD_QUERY_EQ        = 0x15,
 102
 103         /* CQ commands */
 104         CMD_SW2HW_CQ        = 0x16,
 105         CMD_HW2SW_CQ        = 0x17,
 106         CMD_QUERY_CQ        = 0x18,
 107         CMD_RESIZE_CQ       = 0x2c,
 108
 109         /* SRQ commands */
 110         CMD_SW2HW_SRQ       = 0x35,
 111         CMD_HW2SW_SRQ       = 0x36,
 112         CMD_QUERY_SRQ       = 0x37,
 113         CMD_ARM_SRQ         = 0x40,
 114
 115         /* QP/EE commands */
 116         CMD_RST2INIT_QPEE   = 0x19,
 117         CMD_INIT2RTR_QPEE   = 0x1a,
 118         CMD_RTR2RTS_QPEE    = 0x1b,
 119         CMD_RTS2RTS_QPEE    = 0x1c,
 120         CMD_SQERR2RTS_QPEE  = 0x1d,
 121         CMD_2ERR_QPEE       = 0x1e,
 122         CMD_RTS2SQD_QPEE    = 0x1f,
 123         CMD_SQD2SQD_QPEE    = 0x38,
 124         CMD_SQD2RTS_QPEE    = 0x20,
 125         CMD_ERR2RST_QPEE    = 0x21,
 126         CMD_QUERY_QPEE      = 0x22,
 127         CMD_INIT2INIT_QPEE  = 0x2d,
 128         CMD_SUSPEND_QPEE    = 0x32,
 129         CMD_UNSUSPEND_QPEE  = 0x33,
 130         /* special QPs and management commands */
 131         CMD_CONF_SPECIAL_QP = 0x23,
 132         CMD_MAD_IFC         = 0x24,
 133
 134         /* multicast commands */
 135         CMD_READ_MGM        = 0x25,
 136         CMD_WRITE_MGM       = 0x26,
 137         CMD_MGID_HASH       = 0x27,
 138
 139         /* miscellaneous commands */
 140         CMD_DIAG_RPRT       = 0x30,
 141         CMD_NOP             = 0x31,
 142
 143         /* debug commands */
 144         CMD_QUERY_DEBUG_MSG = 0x2a,
 145         CMD_SET_DEBUG_MSG   = 0x2b,
 146 };
 147
 148 /*
 149  * According to Mellanox code, FW may be starved and never complete
 150  * commands.  So we can't use strict timeouts described in PRM -- we
 151  * just arbitrarily select 60 seconds for now.
 152  */
 153 #if 0
 154 /*
 155  * Round up and add 1 to make sure we get the full wait time (since we
 156  * will be starting in the middle of a jiffy)
 157  */
 158 enum {
 159         CMD_TIME_CLASS_A = (HZ + 999) / 1000 + 1,
 160         CMD_TIME_CLASS_B = (HZ +  99) /  100 + 1,
 161         CMD_TIME_CLASS_C = (HZ +   9) /   10 + 1
 162 };
 163 #else
 164 enum {
 165         CMD_TIME_CLASS_A = 60 * HZ,
 166         CMD_TIME_CLASS_B = 60 * HZ,
 167         CMD_TIME_CLASS_C = 60 * HZ
 168 };
 169 #endif
 170
 171 enum {
 172         GO_BIT_TIMEOUT = HZ * 10
 173 };
 174
 175 struct mthca_cmd_context {
 176         struct completion done;
 177         struct timer_list timer;
 178         int               result;
 179         int               next;
 180         u64               out_param;
 181         u16               token;
 182         u8                status;
 183 };
 184
 185 static int fw_cmd_doorbell = 1;
 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         mutex_unlock(&dev->cmd.hcr_mutex);
 294         return err;
 295 }
 296
 297 static int mthca_cmd_poll(struct mthca_dev *dev,
 298                           u64 in_param,
 299                           u64 *out_param,
 300                           int out_is_imm,
 301                           u32 in_modifier,
 302                           u8 op_modifier,
 303                           u16 op,
 304                           unsigned long timeout,
 305                           u8 *status)
 306 {
 307         int err = 0;
 308         unsigned long end;
 309
 310         down(&dev->cmd.poll_sem);
 311
 312         err = mthca_cmd_post(dev, in_param,
 313                              out_param ? *out_param : 0,
 314                              in_modifier, op_modifier,
 315                              op, CMD_POLL_TOKEN, 0);
 316         if (err)
 317                 goto out;
 318
 319         end = timeout + jiffies;
 320         while (go_bit(dev) && time_before(jiffies, end)) {
 321                 set_current_state(TASK_RUNNING);
 322                 schedule();
 323         }
 324
 325         if (go_bit(dev)) {
 326                 err = -EBUSY;
 327                 goto out;
 328         }
 329
 330         if (out_is_imm)
 331                 *out_param =
 332                         (u64) be32_to_cpu((__force __be32)
 333                                           __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET)) << 32 |
 334                         (u64) be32_to_cpu((__force __be32)
 335                                           __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET + 4));
 336
 337         *status = be32_to_cpu((__force __be32) __raw_readl(dev->hcr + HCR_STATUS_OFFSET)) >> 24;
 338
 339 out:
 340         up(&dev->cmd.poll_sem);
 341         return err;
 342 }
 343
 344 void mthca_cmd_event(struct mthca_dev *dev,
 345                      u16 token,
 346                      u8  status,
 347                      u64 out_param)
 348 {
 349         struct mthca_cmd_context *context =
 350                 &dev->cmd.context[token & dev->cmd.token_mask];
 351
 352         /* previously timed out command completing at long last */
 353         if (token != context->token)
 354                 return;
 355
 356         context->result    = 0;
 357         context->status    = status;
 358         context->out_param = out_param;
 359
 360         context->token += dev->cmd.token_mask + 1;
 361
 362         complete(&context->done);
 363 }
 364
 365 static void event_timeout(unsigned long context_ptr)
 366 {
 367         struct mthca_cmd_context *context =
 368                 (struct mthca_cmd_context *) context_ptr;
 369
 370         context->result = -EBUSY;
 371         complete(&context->done);
 372 }
 373
 374 static int mthca_cmd_wait(struct mthca_dev *dev,
 375                           u64 in_param,
 376                           u64 *out_param,
 377                           int out_is_imm,
 378                           u32 in_modifier,
 379                           u8 op_modifier,
 380                           u16 op,
 381                           unsigned long timeout,
 382                           u8 *status)
 383 {
 384         int err = 0;
 385         struct mthca_cmd_context *context;
 386
 387         down(&dev->cmd.event_sem);
 388
 389         spin_lock(&dev->cmd.context_lock);
 390         BUG_ON(dev->cmd.free_head < 0);
 391         context = &dev->cmd.context[dev->cmd.free_head];
 392         dev->cmd.free_head = context->next;
 393         spin_unlock(&dev->cmd.context_lock);
 394
 395         init_completion(&context->done);
 396
 397         err = mthca_cmd_post(dev, in_param,
 398                              out_param ? *out_param : 0,
 399                              in_modifier, op_modifier,
 400                              op, context->token, 1);
 401         if (err)
 402                 goto out;
 403
 404         context->timer.expires  = jiffies + timeout;
 405         add_timer(&context->timer);
 406
 407         wait_for_completion(&context->done);
 408         del_timer_sync(&context->timer);
 409
 410         err = context->result;
 411         if (err)
 412                 goto out;
 413
 414         *status = context->status;
 415         if (*status)
 416                 mthca_dbg(dev, "Command %02x completed with status %02x\n",
 417                           op, *status);
 418
 419         if (out_is_imm)
 420                 *out_param = context->out_param;
 421
 422 out:
 423         spin_lock(&dev->cmd.context_lock);
 424         context->next = dev->cmd.free_head;
 425         dev->cmd.free_head = context - dev->cmd.context;
 426         spin_unlock(&dev->cmd.context_lock);
 427
 428         up(&dev->cmd.event_sem);
 429         return err;
 430 }
 431
 432 /* Invoke a command with an output mailbox */
 433 static int mthca_cmd_box(struct mthca_dev *dev,
 434                          u64 in_param,
 435                          u64 out_param,
 436                          u32 in_modifier,
 437                          u8 op_modifier,
 438                          u16 op,
 439                          unsigned long timeout,
 440                          u8 *status)
 441 {
 442         if (dev->cmd.flags & MTHCA_CMD_USE_EVENTS)
 443                 return mthca_cmd_wait(dev, in_param, &out_param, 0,
 444                                       in_modifier, op_modifier, op,
 445                                       timeout, status);
 446         else
 447                 return mthca_cmd_poll(dev, in_param, &out_param, 0,
 448                                       in_modifier, op_modifier, op,
 449                                       timeout, status);
 450 }
 451
 452 /* Invoke a command with no output parameter */
 453 static int mthca_cmd(struct mthca_dev *dev,
 454                      u64 in_param,
 455                      u32 in_modifier,
 456                      u8 op_modifier,
 457                      u16 op,
 458                      unsigned long timeout,
 459                      u8 *status)
 460 {
 461         return mthca_cmd_box(dev, in_param, 0, in_modifier,
 462                              op_modifier, op, timeout, status);
 463 }
 464
 465 /*
 466  * Invoke a command with an immediate output parameter (and copy the
 467  * output into the caller's out_param pointer after the command
 468  * executes).
 469  */
 470 static int mthca_cmd_imm(struct mthca_dev *dev,
 471                          u64 in_param,
 472                          u64 *out_param,
 473                          u32 in_modifier,
 474                          u8 op_modifier,
 475                          u16 op,
 476                          unsigned long timeout,
 477                          u8 *status)
 478 {
 479         if (dev->cmd.flags & MTHCA_CMD_USE_EVENTS)
 480                 return mthca_cmd_wait(dev, in_param, out_param, 1,
 481                                       in_modifier, op_modifier, op,
 482                                       timeout, status);
 483         else
 484                 return mthca_cmd_poll(dev, in_param, out_param, 1,
 485                                       in_modifier, op_modifier, op,
 486                                       timeout, status);
 487 }
 488
 489 int mthca_cmd_init(struct mthca_dev *dev)
 490 {
 491         mutex_init(&dev->cmd.hcr_mutex);
 492         sema_init(&dev->cmd.poll_sem, 1);
 493         dev->cmd.flags = 0;
 494
 495         dev->hcr = ioremap(pci_resource_start(dev->pdev, 0) + MTHCA_HCR_BASE,
 496                            MTHCA_HCR_SIZE);
 497         if (!dev->hcr) {
 498                 mthca_err(dev, "Couldn't map command register.");
 499                 return -ENOMEM;
 500         }
 501
 502         dev->cmd.pool = pci_pool_create("mthca_cmd", dev->pdev,
 503                                         MTHCA_MAILBOX_SIZE,
 504                                         MTHCA_MAILBOX_SIZE, 0);
 505         if (!dev->cmd.pool) {
 506                 iounmap(dev->hcr);
 507                 return -ENOMEM;
 508         }
 509
 510         return 0;
 511 }
 512
 513 void mthca_cmd_cleanup(struct mthca_dev *dev)
 514 {
 515         pci_pool_destroy(dev->cmd.pool);
 516         iounmap(dev->hcr);
 517         if (dev->cmd.flags & MTHCA_CMD_POST_DOORBELLS)
 518                 iounmap(dev->cmd.dbell_map);
 519 }
 520
 521 /*
 522  * Switch to using events to issue FW commands (should be called after
 523  * event queue to command events has been initialized).
 524  */
 525 int mthca_cmd_use_events(struct mthca_dev *dev)
 526 {
 527         int i;
 528
 529         dev->cmd.context = kmalloc(dev->cmd.max_cmds *
 530                                    sizeof (struct mthca_cmd_context),
 531                                    GFP_KERNEL);
 532         if (!dev->cmd.context)
 533                 return -ENOMEM;
 534
 535         for (i = 0; i < dev->cmd.max_cmds; ++i) {
 536                 dev->cmd.context[i].token = i;
 537                 dev->cmd.context[i].next = i + 1;
 538                 init_timer(&dev->cmd.context[i].timer);
 539                 dev->cmd.context[i].timer.data     =
 540                         (unsigned long) &dev->cmd.context[i];
 541                 dev->cmd.context[i].timer.function = event_timeout;
 542         }
 543
 544         dev->cmd.context[dev->cmd.max_cmds - 1].next = -1;
 545         dev->cmd.free_head = 0;
 546
 547         sema_init(&dev->cmd.event_sem, dev->cmd.max_cmds);
 548         spin_lock_init(&dev->cmd.context_lock);
 549
 550         for (dev->cmd.token_mask = 1;
 551              dev->cmd.token_mask < dev->cmd.max_cmds;
 552              dev->cmd.token_mask <<= 1)
 553                 ; /* nothing */
 554         --dev->cmd.token_mask;
 555
 556         dev->cmd.flags |= MTHCA_CMD_USE_EVENTS;
 557
 558         down(&dev->cmd.poll_sem);
 559
 560         return 0;
 561 }
 562
 563 /*
 564  * Switch back to polling (used when shutting down the device)
 565  */
 566 void mthca_cmd_use_polling(struct mthca_dev *dev)
 567 {
 568         int i;
 569
 570         dev->cmd.flags &= ~MTHCA_CMD_USE_EVENTS;
 571
 572         for (i = 0; i < dev->cmd.max_cmds; ++i)
 573                 down(&dev->cmd.event_sem);
 574
 575         kfree(dev->cmd.context);
 576
 577         up(&dev->cmd.poll_sem);
 578 }
 579
 580 struct mthca_mailbox *mthca_alloc_mailbox(struct mthca_dev *dev,
 581                                           gfp_t gfp_mask)
 582 {
 583         struct mthca_mailbox *mailbox;
 584
 585         mailbox = kmalloc(sizeof *mailbox, gfp_mask);
 586         if (!mailbox)
 587                 return ERR_PTR(-ENOMEM);
 588
 589         mailbox->buf = pci_pool_alloc(dev->cmd.pool, gfp_mask, &mailbox->dma);
 590         if (!mailbox->buf) {
 591                 kfree(mailbox);
 592                 return ERR_PTR(-ENOMEM);
 593         }
 594
 595         return mailbox;
 596 }
 597
 598 void mthca_free_mailbox(struct mthca_dev *dev, struct mthca_mailbox *mailbox)
 599 {
 600         if (!mailbox)
 601                 return;
 602
 603         pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma);
 604         kfree(mailbox);
 605 }
 606
 607 int mthca_SYS_EN(struct mthca_dev *dev, u8 *status)
 608 {
 609         u64 out;
 610         int ret;
 611
 612         ret = mthca_cmd_imm(dev, 0, &out, 0, 0, CMD_SYS_EN, HZ, status);
 613
 614         if (*status == MTHCA_CMD_STAT_DDR_MEM_ERR)
 615                 mthca_warn(dev, "SYS_EN DDR error: syn=%x, sock=%d, "
 616                            "sladdr=%d, SPD source=%s\n",
 617                            (int) (out >> 6) & 0xf, (int) (out >> 4) & 3,
 618                            (int) (out >> 1) & 7, (int) out & 1 ? "NVMEM" : "DIMM");
 619
 620         return ret;
 621 }
 622
 623 int mthca_SYS_DIS(struct mthca_dev *dev, u8 *status)
 624 {
 625         return mthca_cmd(dev, 0, 0, 0, CMD_SYS_DIS, HZ, status);
 626 }
 627
 628 static int mthca_map_cmd(struct mthca_dev *dev, u16 op, struct mthca_icm *icm,
 629                          u64 virt, u8 *status)
 630 {
 631         struct mthca_mailbox *mailbox;
 632         struct mthca_icm_iter iter;
 633         __be64 *pages;
 634         int lg;
 635         int nent = 0;
 636         int i;
 637         int err = 0;
 638         int ts = 0, tc = 0;
 639
 640         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 641         if (IS_ERR(mailbox))
 642                 return PTR_ERR(mailbox);
 643         memset(mailbox->buf, 0, MTHCA_MAILBOX_SIZE);
 644         pages = mailbox->buf;
 645
 646         for (mthca_icm_first(icm, &iter);
 647              !mthca_icm_last(&iter);
 648              mthca_icm_next(&iter)) {
 649                 /*
 650                  * We have to pass pages that are aligned to their
 651                  * size, so find the least significant 1 in the
 652                  * address or size and use that as our log2 size.
 653                  */
 654                 lg = ffs(mthca_icm_addr(&iter) | mthca_icm_size(&iter)) - 1;
 655                 if (lg < MTHCA_ICM_PAGE_SHIFT) {
 656                         mthca_warn(dev, "Got FW area not aligned to %d (%llx/%lx).\n",
 657                                    MTHCA_ICM_PAGE_SIZE,
 658                                    (unsigned long long) mthca_icm_addr(&iter),
 659                                    mthca_icm_size(&iter));
 660                         err = -EINVAL;
 661                         goto out;
 662                 }
 663                 for (i = 0; i < mthca_icm_size(&iter) >> lg; ++i) {
 664                         if (virt != -1) {
 665                                 pages[nent * 2] = cpu_to_be64(virt);
 666                                 virt += 1 << lg;
 667                         }
 668
 669                         pages[nent * 2 + 1] =
 670                                 cpu_to_be64((mthca_icm_addr(&iter) + (i << lg)) |
 671                                             (lg - MTHCA_ICM_PAGE_SHIFT));
 672                         ts += 1 << (lg - 10);
 673                         ++tc;
 674
 675                         if (++nent == MTHCA_MAILBOX_SIZE / 16) {
 676                                 err = mthca_cmd(dev, mailbox->dma, nent, 0, op,
 677                                                 CMD_TIME_CLASS_B, status);
 678                                 if (err || *status)
 679                                         goto out;
 680                                 nent = 0;
 681                         }
 682                 }
 683         }
 684
 685         if (nent)
 686                 err = mthca_cmd(dev, mailbox->dma, nent, 0, op,
 687                                 CMD_TIME_CLASS_B, status);
 688
 689         switch (op) {
 690         case CMD_MAP_FA:
 691                 mthca_dbg(dev, "Mapped %d chunks/%d KB for FW.\n", tc, ts);
 692                 break;
 693         case CMD_MAP_ICM_AUX:
 694                 mthca_dbg(dev, "Mapped %d chunks/%d KB for ICM aux.\n", tc, ts);
 695                 break;
 696         case CMD_MAP_ICM:
 697                 mthca_dbg(dev, "Mapped %d chunks/%d KB at %llx for ICM.\n",
 698                           tc, ts, (unsigned long long) virt - (ts << 10));
 699                 break;
 700         }
 701
 702 out:
 703         mthca_free_mailbox(dev, mailbox);
 704         return err;
 705 }
 706
 707 int mthca_MAP_FA(struct mthca_dev *dev, struct mthca_icm *icm, u8 *status)
 708 {
 709         return mthca_map_cmd(dev, CMD_MAP_FA, icm, -1, status);
 710 }
 711
 712 int mthca_UNMAP_FA(struct mthca_dev *dev, u8 *status)
 713 {
 714         return mthca_cmd(dev, 0, 0, 0, CMD_UNMAP_FA, CMD_TIME_CLASS_B, status);
 715 }
 716
 717 int mthca_RUN_FW(struct mthca_dev *dev, u8 *status)
 718 {
 719         return mthca_cmd(dev, 0, 0, 0, CMD_RUN_FW, CMD_TIME_CLASS_A, status);
 720 }
 721
 722 static void mthca_setup_cmd_doorbells(struct mthca_dev *dev, u64 base)
 723 {
 724         unsigned long addr;
 725         u16 max_off = 0;
 726         int i;
 727
 728         for (i = 0; i < 8; ++i)
 729                 max_off = max(max_off, dev->cmd.dbell_offsets[i]);
 730
 731         if ((base & PAGE_MASK) != ((base + max_off) & PAGE_MASK)) {
 732                 mthca_warn(dev, "Firmware doorbell region at 0x%016llx, "
 733                            "length 0x%x crosses a page boundary\n",
 734                            (unsigned long long) base, max_off);
 735                 return;
 736         }
 737
 738         addr = pci_resource_start(dev->pdev, 2) +
 739                 ((pci_resource_len(dev->pdev, 2) - 1) & base);
 740         dev->cmd.dbell_map = ioremap(addr, max_off + sizeof(u32));
 741         if (!dev->cmd.dbell_map)
 742                 return;
 743
 744         dev->cmd.flags |= MTHCA_CMD_POST_DOORBELLS;
 745         mthca_dbg(dev, "Mapped doorbell page for posting FW commands\n");
 746 }
 747
 748 int mthca_QUERY_FW(struct mthca_dev *dev, u8 *status)
 749 {
 750         struct mthca_mailbox *mailbox;
 751         u32 *outbox;
 752         u64 base;
 753         u32 tmp;
 754         int err = 0;
 755         u8 lg;
 756         int i;
 757
 758 #define QUERY_FW_OUT_SIZE             0x100
 759 #define QUERY_FW_VER_OFFSET            0x00
 760 #define QUERY_FW_MAX_CMD_OFFSET        0x0f
 761 #define QUERY_FW_ERR_START_OFFSET      0x30
 762 #define QUERY_FW_ERR_SIZE_OFFSET       0x38
 763
 764 #define QUERY_FW_CMD_DB_EN_OFFSET      0x10
 765 #define QUERY_FW_CMD_DB_OFFSET         0x50
 766 #define QUERY_FW_CMD_DB_BASE           0x60
 767
 768 #define QUERY_FW_START_OFFSET          0x20
 769 #define QUERY_FW_END_OFFSET            0x28
 770
 771 #define QUERY_FW_SIZE_OFFSET           0x00
 772 #define QUERY_FW_CLR_INT_BASE_OFFSET   0x20
 773 #define QUERY_FW_EQ_ARM_BASE_OFFSET    0x40
 774 #define QUERY_FW_EQ_SET_CI_BASE_OFFSET 0x48
 775
 776         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 777         if (IS_ERR(mailbox))
 778                 return PTR_ERR(mailbox);
 779         outbox = mailbox->buf;
 780
 781         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_FW,
 782                             CMD_TIME_CLASS_A, status);
 783
 784         if (err)
 785                 goto out;
 786
 787         MTHCA_GET(dev->fw_ver,   outbox, QUERY_FW_VER_OFFSET);
 788         /*
 789          * FW subminor version is at more signifant bits than minor
 790          * version, so swap here.
 791          */
 792         dev->fw_ver = (dev->fw_ver & 0xffff00000000ull) |
 793                 ((dev->fw_ver & 0xffff0000ull) >> 16) |
 794                 ((dev->fw_ver & 0x0000ffffull) << 16);
 795
 796         mthca_dbg(dev, "FW version %012llx, max commands %d\n",
 797                   (unsigned long long) dev->fw_ver, dev->cmd.max_cmds);
 798
 799         MTHCA_GET(lg, outbox, QUERY_FW_MAX_CMD_OFFSET);
 800         dev->cmd.max_cmds = 1 << lg;
 801         MTHCA_GET(dev->catas_err.addr, outbox, QUERY_FW_ERR_START_OFFSET);
 802         MTHCA_GET(dev->catas_err.size, outbox, QUERY_FW_ERR_SIZE_OFFSET);
 803
 804         mthca_dbg(dev, "Catastrophic error buffer at 0x%llx, size 0x%x\n",
 805                   (unsigned long long) dev->catas_err.addr, dev->catas_err.size);
 806
 807         MTHCA_GET(tmp, outbox, QUERY_FW_CMD_DB_EN_OFFSET);
 808         if (tmp & 0x1) {
 809                 mthca_dbg(dev, "FW supports commands through doorbells\n");
 810
 811                 MTHCA_GET(base, outbox, QUERY_FW_CMD_DB_BASE);
 812                 for (i = 0; i < MTHCA_CMD_NUM_DBELL_DWORDS; ++i)
 813                         MTHCA_GET(dev->cmd.dbell_offsets[i], outbox,
 814                                   QUERY_FW_CMD_DB_OFFSET + (i << 1));
 815
 816                 mthca_setup_cmd_doorbells(dev, base);
 817         }
 818
 819         if (mthca_is_memfree(dev)) {
 820                 MTHCA_GET(dev->fw.arbel.fw_pages,       outbox, QUERY_FW_SIZE_OFFSET);
 821                 MTHCA_GET(dev->fw.arbel.clr_int_base,   outbox, QUERY_FW_CLR_INT_BASE_OFFSET);
 822                 MTHCA_GET(dev->fw.arbel.eq_arm_base,    outbox, QUERY_FW_EQ_ARM_BASE_OFFSET);
 823                 MTHCA_GET(dev->fw.arbel.eq_set_ci_base, outbox, QUERY_FW_EQ_SET_CI_BASE_OFFSET);
 824                 mthca_dbg(dev, "FW size %d KB\n", dev->fw.arbel.fw_pages << 2);
 825
 826                 /*
 827                  * Round up number of system pages needed in case
 828                  * MTHCA_ICM_PAGE_SIZE < PAGE_SIZE.
 829                  */
 830                 dev->fw.arbel.fw_pages =
 831                         ALIGN(dev->fw.arbel.fw_pages, PAGE_SIZE / MTHCA_ICM_PAGE_SIZE) >>
 832                                 (PAGE_SHIFT - MTHCA_ICM_PAGE_SHIFT);
 833
 834                 mthca_dbg(dev, "Clear int @ %llx, EQ arm @ %llx, EQ set CI @ %llx\n",
 835                           (unsigned long long) dev->fw.arbel.clr_int_base,
 836                           (unsigned long long) dev->fw.arbel.eq_arm_base,
 837                           (unsigned long long) dev->fw.arbel.eq_set_ci_base);
 838         } else {
 839                 MTHCA_GET(dev->fw.tavor.fw_start, outbox, QUERY_FW_START_OFFSET);
 840                 MTHCA_GET(dev->fw.tavor.fw_end,   outbox, QUERY_FW_END_OFFSET);
 841
 842                 mthca_dbg(dev, "FW size %d KB (start %llx, end %llx)\n",
 843                           (int) ((dev->fw.tavor.fw_end - dev->fw.tavor.fw_start) >> 10),
 844                           (unsigned long long) dev->fw.tavor.fw_start,
 845                           (unsigned long long) dev->fw.tavor.fw_end);
 846         }
 847
 848 out:
 849         mthca_free_mailbox(dev, mailbox);
 850         return err;
 851 }
 852
 853 int mthca_ENABLE_LAM(struct mthca_dev *dev, u8 *status)
 854 {
 855         struct mthca_mailbox *mailbox;
 856         u8 info;
 857         u32 *outbox;
 858         int err = 0;
 859
 860 #define ENABLE_LAM_OUT_SIZE         0x100
 861 #define ENABLE_LAM_START_OFFSET     0x00
 862 #define ENABLE_LAM_END_OFFSET       0x08
 863 #define ENABLE_LAM_INFO_OFFSET      0x13
 864
 865 #define ENABLE_LAM_INFO_HIDDEN_FLAG (1 << 4)
 866 #define ENABLE_LAM_INFO_ECC_MASK    0x3
 867
 868         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 869         if (IS_ERR(mailbox))
 870                 return PTR_ERR(mailbox);
 871         outbox = mailbox->buf;
 872
 873         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_ENABLE_LAM,
 874                             CMD_TIME_CLASS_C, status);
 875
 876         if (err)
 877                 goto out;
 878
 879         if (*status == MTHCA_CMD_STAT_LAM_NOT_PRE)
 880                 goto out;
 881
 882         MTHCA_GET(dev->ddr_start, outbox, ENABLE_LAM_START_OFFSET);
 883         MTHCA_GET(dev->ddr_end,   outbox, ENABLE_LAM_END_OFFSET);
 884         MTHCA_GET(info,           outbox, ENABLE_LAM_INFO_OFFSET);
 885
 886         if (!!(info & ENABLE_LAM_INFO_HIDDEN_FLAG) !=
 887             !!(dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) {
 888                 mthca_info(dev, "FW reports that HCA-attached memory "
 889                            "is %s hidden; does not match PCI config\n",
 890                            (info & ENABLE_LAM_INFO_HIDDEN_FLAG) ?
 891                            "" : "not");
 892         }
 893         if (info & ENABLE_LAM_INFO_HIDDEN_FLAG)
 894                 mthca_dbg(dev, "HCA-attached memory is hidden.\n");
 895
 896         mthca_dbg(dev, "HCA memory size %d KB (start %llx, end %llx)\n",
 897                   (int) ((dev->ddr_end - dev->ddr_start) >> 10),
 898                   (unsigned long long) dev->ddr_start,
 899                   (unsigned long long) dev->ddr_end);
 900
 901 out:
 902         mthca_free_mailbox(dev, mailbox);
 903         return err;
 904 }
 905
 906 int mthca_DISABLE_LAM(struct mthca_dev *dev, u8 *status)
 907 {
 908         return mthca_cmd(dev, 0, 0, 0, CMD_SYS_DIS, CMD_TIME_CLASS_C, status);
 909 }
 910
 911 int mthca_QUERY_DDR(struct mthca_dev *dev, u8 *status)
 912 {
 913         struct mthca_mailbox *mailbox;
 914         u8 info;
 915         u32 *outbox;
 916         int err = 0;
 917
 918 #define QUERY_DDR_OUT_SIZE         0x100
 919 #define QUERY_DDR_START_OFFSET     0x00
 920 #define QUERY_DDR_END_OFFSET       0x08
 921 #define QUERY_DDR_INFO_OFFSET      0x13
 922
 923 #define QUERY_DDR_INFO_HIDDEN_FLAG (1 << 4)
 924 #define QUERY_DDR_INFO_ECC_MASK    0x3
 925
 926         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 927         if (IS_ERR(mailbox))
 928                 return PTR_ERR(mailbox);
 929         outbox = mailbox->buf;
 930
 931         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_DDR,
 932                             CMD_TIME_CLASS_A, status);
 933
 934         if (err)
 935                 goto out;
 936
 937         MTHCA_GET(dev->ddr_start, outbox, QUERY_DDR_START_OFFSET);
 938         MTHCA_GET(dev->ddr_end,   outbox, QUERY_DDR_END_OFFSET);
 939         MTHCA_GET(info,           outbox, QUERY_DDR_INFO_OFFSET);
 940
 941         if (!!(info & QUERY_DDR_INFO_HIDDEN_FLAG) !=
 942             !!(dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) {
 943                 mthca_info(dev, "FW reports that HCA-attached memory "
 944                            "is %s hidden; does not match PCI config\n",
 945                            (info & QUERY_DDR_INFO_HIDDEN_FLAG) ?
 946                            "" : "not");
 947         }
 948         if (info & QUERY_DDR_INFO_HIDDEN_FLAG)
 949                 mthca_dbg(dev, "HCA-attached memory is hidden.\n");
 950
 951         mthca_dbg(dev, "HCA memory size %d KB (start %llx, end %llx)\n",
 952                   (int) ((dev->ddr_end - dev->ddr_start) >> 10),
 953                   (unsigned long long) dev->ddr_start,
 954                   (unsigned long long) dev->ddr_end);
 955
 956 out:
 957         mthca_free_mailbox(dev, mailbox);
 958         return err;
 959 }
 960
 961 int mthca_QUERY_DEV_LIM(struct mthca_dev *dev,
 962                         struct mthca_dev_lim *dev_lim, u8 *status)
 963 {
 964         struct mthca_mailbox *mailbox;
 965         u32 *outbox;
 966         u8 field;
 967         u16 size;
 968         int err;
 969
 970 #define QUERY_DEV_LIM_OUT_SIZE             0x100
 971 #define QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET     0x10
 972 #define QUERY_DEV_LIM_MAX_QP_SZ_OFFSET      0x11
 973 #define QUERY_DEV_LIM_RSVD_QP_OFFSET        0x12
 974 #define QUERY_DEV_LIM_MAX_QP_OFFSET         0x13
 975 #define QUERY_DEV_LIM_RSVD_SRQ_OFFSET       0x14
 976 #define QUERY_DEV_LIM_MAX_SRQ_OFFSET        0x15
 977 #define QUERY_DEV_LIM_RSVD_EEC_OFFSET       0x16
 978 #define QUERY_DEV_LIM_MAX_EEC_OFFSET        0x17
 979 #define QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET      0x19
 980 #define QUERY_DEV_LIM_RSVD_CQ_OFFSET        0x1a
 981 #define QUERY_DEV_LIM_MAX_CQ_OFFSET         0x1b
 982 #define QUERY_DEV_LIM_MAX_MPT_OFFSET        0x1d
 983 #define QUERY_DEV_LIM_RSVD_EQ_OFFSET        0x1e
 984 #define QUERY_DEV_LIM_MAX_EQ_OFFSET         0x1f
 985 #define QUERY_DEV_LIM_RSVD_MTT_OFFSET       0x20
 986 #define QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET     0x21
 987 #define QUERY_DEV_LIM_RSVD_MRW_OFFSET       0x22
 988 #define QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET    0x23
 989 #define QUERY_DEV_LIM_MAX_AV_OFFSET         0x27
 990 #define QUERY_DEV_LIM_MAX_REQ_QP_OFFSET     0x29
 991 #define QUERY_DEV_LIM_MAX_RES_QP_OFFSET     0x2b
 992 #define QUERY_DEV_LIM_MAX_RDMA_OFFSET       0x2f
 993 #define QUERY_DEV_LIM_RSZ_SRQ_OFFSET        0x33
 994 #define QUERY_DEV_LIM_ACK_DELAY_OFFSET      0x35
 995 #define QUERY_DEV_LIM_MTU_WIDTH_OFFSET      0x36
 996 #define QUERY_DEV_LIM_VL_PORT_OFFSET        0x37
 997 #define QUERY_DEV_LIM_MAX_GID_OFFSET        0x3b
 998 #define QUERY_DEV_LIM_MAX_PKEY_OFFSET       0x3f
 999 #define QUERY_DEV_LIM_FLAGS_OFFSET          0x44
1000 #define QUERY_DEV_LIM_RSVD_UAR_OFFSET       0x48
1001 #define QUERY_DEV_LIM_UAR_SZ_OFFSET         0x49
1002 #define QUERY_DEV_LIM_PAGE_SZ_OFFSET        0x4b
1003 #define QUERY_DEV_LIM_MAX_SG_OFFSET         0x51
1004 #define QUERY_DEV_LIM_MAX_DESC_SZ_OFFSET    0x52
1005 #define QUERY_DEV_LIM_MAX_SG_RQ_OFFSET      0x55
1006 #define QUERY_DEV_LIM_MAX_DESC_SZ_RQ_OFFSET 0x56
1007 #define QUERY_DEV_LIM_MAX_QP_MCG_OFFSET     0x61
1008 #define QUERY_DEV_LIM_RSVD_MCG_OFFSET       0x62
1009 #define QUERY_DEV_LIM_MAX_MCG_OFFSET        0x63
1010 #define QUERY_DEV_LIM_RSVD_PD_OFFSET        0x64
1011 #define QUERY_DEV_LIM_MAX_PD_OFFSET         0x65
1012 #define QUERY_DEV_LIM_RSVD_RDD_OFFSET       0x66
1013 #define QUERY_DEV_LIM_MAX_RDD_OFFSET        0x67
1014 #define QUERY_DEV_LIM_EEC_ENTRY_SZ_OFFSET   0x80
1015 #define QUERY_DEV_LIM_QPC_ENTRY_SZ_OFFSET   0x82
1016 #define QUERY_DEV_LIM_EEEC_ENTRY_SZ_OFFSET  0x84
1017 #define QUERY_DEV_LIM_EQPC_ENTRY_SZ_OFFSET  0x86
1018 #define QUERY_DEV_LIM_EQC_ENTRY_SZ_OFFSET   0x88
1019 #define QUERY_DEV_LIM_CQC_ENTRY_SZ_OFFSET   0x8a
1020 #define QUERY_DEV_LIM_SRQ_ENTRY_SZ_OFFSET   0x8c
1021 #define QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET   0x8e
1022 #define QUERY_DEV_LIM_MTT_ENTRY_SZ_OFFSET   0x90
1023 #define QUERY_DEV_LIM_MPT_ENTRY_SZ_OFFSET   0x92
1024 #define QUERY_DEV_LIM_PBL_SZ_OFFSET         0x96
1025 #define QUERY_DEV_LIM_BMME_FLAGS_OFFSET     0x97
1026 #define QUERY_DEV_LIM_RSVD_LKEY_OFFSET      0x98
1027 #define QUERY_DEV_LIM_LAMR_OFFSET           0x9f
1028 #define QUERY_DEV_LIM_MAX_ICM_SZ_OFFSET     0xa0
1029
1030         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1031         if (IS_ERR(mailbox))
1032                 return PTR_ERR(mailbox);
1033         outbox = mailbox->buf;
1034
1035         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_DEV_LIM,
1036                             CMD_TIME_CLASS_A, status);
1037
1038         if (err)
1039                 goto out;
1040
1041         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_QP_OFFSET);
1042         dev_lim->reserved_qps = 1 << (field & 0xf);
1043         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_OFFSET);
1044         dev_lim->max_qps = 1 << (field & 0x1f);
1045         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_SRQ_OFFSET);
1046         dev_lim->reserved_srqs = 1 << (field >> 4);
1047         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_OFFSET);
1048         dev_lim->max_srqs = 1 << (field & 0x1f);
1049         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EEC_OFFSET);
1050         dev_lim->reserved_eecs = 1 << (field & 0xf);
1051         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EEC_OFFSET);
1052         dev_lim->max_eecs = 1 << (field & 0x1f);
1053         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET);
1054         dev_lim->max_cq_sz = 1 << field;
1055         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_CQ_OFFSET);
1056         dev_lim->reserved_cqs = 1 << (field & 0xf);
1057         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_OFFSET);
1058         dev_lim->max_cqs = 1 << (field & 0x1f);
1059         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MPT_OFFSET);
1060         dev_lim->max_mpts = 1 << (field & 0x3f);
1061         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EQ_OFFSET);
1062         dev_lim->reserved_eqs = 1 << (field & 0xf);
1063         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EQ_OFFSET);
1064         dev_lim->max_eqs = 1 << (field & 0x7);
1065         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MTT_OFFSET);
1066         dev_lim->reserved_mtts = 1 << (field >> 4);
1067         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET);
1068         dev_lim->max_mrw_sz = 1 << field;
1069         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MRW_OFFSET);
1070         dev_lim->reserved_mrws = 1 << (field & 0xf);
1071         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET);
1072         dev_lim->max_mtt_seg = 1 << (field & 0x3f);
1073         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_REQ_QP_OFFSET);
1074         dev_lim->max_requester_per_qp = 1 << (field & 0x3f);
1075         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RES_QP_OFFSET);
1076         dev_lim->max_responder_per_qp = 1 << (field & 0x3f);
1077         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RDMA_OFFSET);
1078         dev_lim->max_rdma_global = 1 << (field & 0x3f);
1079         MTHCA_GET(field, outbox, QUERY_DEV_LIM_ACK_DELAY_OFFSET);
1080         dev_lim->local_ca_ack_delay = field & 0x1f;
1081         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MTU_WIDTH_OFFSET);
1082         dev_lim->max_mtu        = field >> 4;
1083         dev_lim->max_port_width = field & 0xf;
1084         MTHCA_GET(field, outbox, QUERY_DEV_LIM_VL_PORT_OFFSET);
1085         dev_lim->max_vl    = field >> 4;
1086         dev_lim->num_ports = field & 0xf;
1087         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_GID_OFFSET);
1088         dev_lim->max_gids = 1 << (field & 0xf);
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         MTHCA_GET(adapter->vendor_id, outbox,   QUERY_ADAPTER_VENDOR_ID_OFFSET);
1259         MTHCA_GET(adapter->device_id, outbox,   QUERY_ADAPTER_DEVICE_ID_OFFSET);
1260         MTHCA_GET(adapter->revision_id, outbox, QUERY_ADAPTER_REVISION_ID_OFFSET);
1261         MTHCA_GET(adapter->inta_pin, outbox,    QUERY_ADAPTER_INTA_PIN_OFFSET);
1262
1263         get_board_id(outbox + QUERY_ADAPTER_VSD_OFFSET / 4,
1264                      adapter->board_id);
1265
1266 out:
1267         mthca_free_mailbox(dev, mailbox);
1268         return err;
1269 }
1270
1271 int mthca_INIT_HCA(struct mthca_dev *dev,
1272                    struct mthca_init_hca_param *param,
1273                    u8 *status)
1274 {
1275         struct mthca_mailbox *mailbox;
1276         __be32 *inbox;
1277         int err;
1278
1279 #define INIT_HCA_IN_SIZE                 0x200
1280 #define INIT_HCA_FLAGS1_OFFSET           0x00c
1281 #define INIT_HCA_FLAGS2_OFFSET           0x014
1282 #define INIT_HCA_QPC_OFFSET              0x020
1283 #define  INIT_HCA_QPC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x10)
1284 #define  INIT_HCA_LOG_QP_OFFSET          (INIT_HCA_QPC_OFFSET + 0x17)
1285 #define  INIT_HCA_EEC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x20)
1286 #define  INIT_HCA_LOG_EEC_OFFSET         (INIT_HCA_QPC_OFFSET + 0x27)
1287 #define  INIT_HCA_SRQC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x28)
1288 #define  INIT_HCA_LOG_SRQ_OFFSET         (INIT_HCA_QPC_OFFSET + 0x2f)
1289 #define  INIT_HCA_CQC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x30)
1290 #define  INIT_HCA_LOG_CQ_OFFSET          (INIT_HCA_QPC_OFFSET + 0x37)
1291 #define  INIT_HCA_EQPC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x40)
1292 #define  INIT_HCA_EEEC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x50)
1293 #define  INIT_HCA_EQC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x60)
1294 #define  INIT_HCA_LOG_EQ_OFFSET          (INIT_HCA_QPC_OFFSET + 0x67)
1295 #define  INIT_HCA_RDB_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x70)
1296 #define INIT_HCA_UDAV_OFFSET             0x0b0
1297 #define  INIT_HCA_UDAV_LKEY_OFFSET       (INIT_HCA_UDAV_OFFSET + 0x0)
1298 #define  INIT_HCA_UDAV_PD_OFFSET         (INIT_HCA_UDAV_OFFSET + 0x4)
1299 #define INIT_HCA_MCAST_OFFSET            0x0c0
1300 #define  INIT_HCA_MC_BASE_OFFSET         (INIT_HCA_MCAST_OFFSET + 0x00)
1301 #define  INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x12)
1302 #define  INIT_HCA_MC_HASH_SZ_OFFSET      (INIT_HCA_MCAST_OFFSET + 0x16)
1303 #define  INIT_HCA_LOG_MC_TABLE_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x1b)
1304 #define INIT_HCA_TPT_OFFSET              0x0f0
1305 #define  INIT_HCA_MPT_BASE_OFFSET        (INIT_HCA_TPT_OFFSET + 0x00)
1306 #define  INIT_HCA_MTT_SEG_SZ_OFFSET      (INIT_HCA_TPT_OFFSET + 0x09)
1307 #define  INIT_HCA_LOG_MPT_SZ_OFFSET      (INIT_HCA_TPT_OFFSET + 0x0b)
1308 #define  INIT_HCA_MTT_BASE_OFFSET        (INIT_HCA_TPT_OFFSET + 0x10)
1309 #define INIT_HCA_UAR_OFFSET              0x120
1310 #define  INIT_HCA_UAR_BASE_OFFSET        (INIT_HCA_UAR_OFFSET + 0x00)
1311 #define  INIT_HCA_UARC_SZ_OFFSET         (INIT_HCA_UAR_OFFSET + 0x09)
1312 #define  INIT_HCA_LOG_UAR_SZ_OFFSET      (INIT_HCA_UAR_OFFSET + 0x0a)
1313 #define  INIT_HCA_UAR_PAGE_SZ_OFFSET     (INIT_HCA_UAR_OFFSET + 0x0b)
1314 #define  INIT_HCA_UAR_SCATCH_BASE_OFFSET (INIT_HCA_UAR_OFFSET + 0x10)
1315 #define  INIT_HCA_UAR_CTX_BASE_OFFSET    (INIT_HCA_UAR_OFFSET + 0x18)
1316
1317         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1318         if (IS_ERR(mailbox))
1319                 return PTR_ERR(mailbox);
1320         inbox = mailbox->buf;
1321
1322         memset(inbox, 0, INIT_HCA_IN_SIZE);
1323
1324         if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
1325                 MTHCA_PUT(inbox, 0x1, INIT_HCA_FLAGS1_OFFSET);
1326
1327 #if defined(__LITTLE_ENDIAN)
1328         *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) &= ~cpu_to_be32(1 << 1);
1329 #elif defined(__BIG_ENDIAN)
1330         *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) |= cpu_to_be32(1 << 1);
1331 #else
1332 #error Host endianness not defined
1333 #endif
1334         /* Check port for UD address vector: */
1335         *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) |= cpu_to_be32(1);
1336
1337         /* We leave wqe_quota, responder_exu, etc as 0 (default) */
1338
1339         /* QPC/EEC/CQC/EQC/RDB attributes */
1340
1341         MTHCA_PUT(inbox, param->qpc_base,     INIT_HCA_QPC_BASE_OFFSET);
1342         MTHCA_PUT(inbox, param->log_num_qps,  INIT_HCA_LOG_QP_OFFSET);
1343         MTHCA_PUT(inbox, param->eec_base,     INIT_HCA_EEC_BASE_OFFSET);
1344         MTHCA_PUT(inbox, param->log_num_eecs, INIT_HCA_LOG_EEC_OFFSET);
1345         MTHCA_PUT(inbox, param->srqc_base,    INIT_HCA_SRQC_BASE_OFFSET);
1346         MTHCA_PUT(inbox, param->log_num_srqs, INIT_HCA_LOG_SRQ_OFFSET);
1347         MTHCA_PUT(inbox, param->cqc_base,     INIT_HCA_CQC_BASE_OFFSET);
1348         MTHCA_PUT(inbox, param->log_num_cqs,  INIT_HCA_LOG_CQ_OFFSET);
1349         MTHCA_PUT(inbox, param->eqpc_base,    INIT_HCA_EQPC_BASE_OFFSET);
1350         MTHCA_PUT(inbox, param->eeec_base,    INIT_HCA_EEEC_BASE_OFFSET);
1351         MTHCA_PUT(inbox, param->eqc_base,     INIT_HCA_EQC_BASE_OFFSET);
1352         MTHCA_PUT(inbox, param->log_num_eqs,  INIT_HCA_LOG_EQ_OFFSET);
1353         MTHCA_PUT(inbox, param->rdb_base,     INIT_HCA_RDB_BASE_OFFSET);
1354
1355         /* UD AV attributes */
1356
1357         /* multicast attributes */
1358
1359         MTHCA_PUT(inbox, param->mc_base,         INIT_HCA_MC_BASE_OFFSET);
1360         MTHCA_PUT(inbox, param->log_mc_entry_sz, INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET);
1361         MTHCA_PUT(inbox, param->mc_hash_sz,      INIT_HCA_MC_HASH_SZ_OFFSET);
1362         MTHCA_PUT(inbox, param->log_mc_table_sz, INIT_HCA_LOG_MC_TABLE_SZ_OFFSET);
1363
1364         /* TPT attributes */
1365
1366         MTHCA_PUT(inbox, param->mpt_base,   INIT_HCA_MPT_BASE_OFFSET);
1367         if (!mthca_is_memfree(dev))
1368                 MTHCA_PUT(inbox, param->mtt_seg_sz, INIT_HCA_MTT_SEG_SZ_OFFSET);
1369         MTHCA_PUT(inbox, param->log_mpt_sz, INIT_HCA_LOG_MPT_SZ_OFFSET);
1370         MTHCA_PUT(inbox, param->mtt_base,   INIT_HCA_MTT_BASE_OFFSET);
1371
1372         /* UAR attributes */
1373         {
1374                 u8 uar_page_sz = PAGE_SHIFT - 12;
1375                 MTHCA_PUT(inbox, uar_page_sz, INIT_HCA_UAR_PAGE_SZ_OFFSET);
1376         }
1377
1378         MTHCA_PUT(inbox, param->uar_scratch_base, INIT_HCA_UAR_SCATCH_BASE_OFFSET);
1379
1380         if (mthca_is_memfree(dev)) {
1381                 MTHCA_PUT(inbox, param->log_uarc_sz, INIT_HCA_UARC_SZ_OFFSET);
1382                 MTHCA_PUT(inbox, param->log_uar_sz,  INIT_HCA_LOG_UAR_SZ_OFFSET);
1383                 MTHCA_PUT(inbox, param->uarc_base,   INIT_HCA_UAR_CTX_BASE_OFFSET);
1384         }
1385
1386         err = mthca_cmd(dev, mailbox->dma, 0, 0, CMD_INIT_HCA, HZ, status);
1387
1388         mthca_free_mailbox(dev, mailbox);
1389         return err;
1390 }
1391
1392 int mthca_INIT_IB(struct mthca_dev *dev,
1393                   struct mthca_init_ib_param *param,
1394                   int port, u8 *status)
1395 {
1396         struct mthca_mailbox *mailbox;
1397         u32 *inbox;
1398         int err;
1399         u32 flags;
1400
1401 #define INIT_IB_IN_SIZE          56
1402 #define INIT_IB_FLAGS_OFFSET     0x00
1403 #define INIT_IB_FLAG_SIG         (1 << 18)
1404 #define INIT_IB_FLAG_NG          (1 << 17)
1405 #define INIT_IB_FLAG_G0          (1 << 16)
1406 #define INIT_IB_VL_SHIFT         4
1407 #define INIT_IB_PORT_WIDTH_SHIFT 8
1408 #define INIT_IB_MTU_SHIFT        12
1409 #define INIT_IB_MAX_GID_OFFSET   0x06
1410 #define INIT_IB_MAX_PKEY_OFFSET  0x0a
1411 #define INIT_IB_GUID0_OFFSET     0x10
1412 #define INIT_IB_NODE_GUID_OFFSET 0x18
1413 #define INIT_IB_SI_GUID_OFFSET   0x20
1414
1415         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1416         if (IS_ERR(mailbox))
1417                 return PTR_ERR(mailbox);
1418         inbox = mailbox->buf;
1419
1420         memset(inbox, 0, INIT_IB_IN_SIZE);
1421
1422         flags = 0;
1423         flags |= param->set_guid0     ? INIT_IB_FLAG_G0  : 0;
1424         flags |= param->set_node_guid ? INIT_IB_FLAG_NG  : 0;
1425         flags |= param->set_si_guid   ? INIT_IB_FLAG_SIG : 0;
1426         flags |= param->vl_cap << INIT_IB_VL_SHIFT;
1427         flags |= param->port_width << INIT_IB_PORT_WIDTH_SHIFT;
1428         flags |= param->mtu_cap << INIT_IB_MTU_SHIFT;
1429         MTHCA_PUT(inbox, flags, INIT_IB_FLAGS_OFFSET);
1430
1431         MTHCA_PUT(inbox, param->gid_cap,   INIT_IB_MAX_GID_OFFSET);
1432         MTHCA_PUT(inbox, param->pkey_cap,  INIT_IB_MAX_PKEY_OFFSET);
1433         MTHCA_PUT(inbox, param->guid0,     INIT_IB_GUID0_OFFSET);
1434         MTHCA_PUT(inbox, param->node_guid, INIT_IB_NODE_GUID_OFFSET);
1435         MTHCA_PUT(inbox, param->si_guid,   INIT_IB_SI_GUID_OFFSET);
1436
1437         err = mthca_cmd(dev, mailbox->dma, port, 0, CMD_INIT_IB,
1438                         CMD_TIME_CLASS_A, status);
1439
1440         mthca_free_mailbox(dev, mailbox);
1441         return err;
1442 }
1443
1444 int mthca_CLOSE_IB(struct mthca_dev *dev, int port, u8 *status)
1445 {
1446         return mthca_cmd(dev, 0, port, 0, CMD_CLOSE_IB, HZ, status);
1447 }
1448
1449 int mthca_CLOSE_HCA(struct mthca_dev *dev, int panic, u8 *status)
1450 {
1451         return mthca_cmd(dev, 0, 0, panic, CMD_CLOSE_HCA, HZ, status);
1452 }
1453
1454 int mthca_SET_IB(struct mthca_dev *dev, struct mthca_set_ib_param *param,
1455                  int port, u8 *status)
1456 {
1457         struct mthca_mailbox *mailbox;
1458         u32 *inbox;
1459         int err;
1460         u32 flags = 0;
1461
1462 #define SET_IB_IN_SIZE         0x40
1463 #define SET_IB_FLAGS_OFFSET    0x00
1464 #define SET_IB_FLAG_SIG        (1 << 18)
1465 #define SET_IB_FLAG_RQK        (1 <<  0)
1466 #define SET_IB_CAP_MASK_OFFSET 0x04
1467 #define SET_IB_SI_GUID_OFFSET  0x08
1468
1469         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1470         if (IS_ERR(mailbox))
1471                 return PTR_ERR(mailbox);
1472         inbox = mailbox->buf;
1473
1474         memset(inbox, 0, SET_IB_IN_SIZE);
1475
1476         flags |= param->set_si_guid     ? SET_IB_FLAG_SIG : 0;
1477         flags |= param->reset_qkey_viol ? SET_IB_FLAG_RQK : 0;
1478         MTHCA_PUT(inbox, flags, SET_IB_FLAGS_OFFSET);
1479
1480         MTHCA_PUT(inbox, param->cap_mask, SET_IB_CAP_MASK_OFFSET);
1481         MTHCA_PUT(inbox, param->si_guid,  SET_IB_SI_GUID_OFFSET);
1482
1483         err = mthca_cmd(dev, mailbox->dma, port, 0, CMD_SET_IB,
1484                         CMD_TIME_CLASS_B, status);
1485
1486         mthca_free_mailbox(dev, mailbox);
1487         return err;
1488 }
1489
1490 int mthca_MAP_ICM(struct mthca_dev *dev, struct mthca_icm *icm, u64 virt, u8 *status)
1491 {
1492         return mthca_map_cmd(dev, CMD_MAP_ICM, icm, virt, status);
1493 }
1494
1495 int mthca_MAP_ICM_page(struct mthca_dev *dev, u64 dma_addr, u64 virt, u8 *status)
1496 {
1497         struct mthca_mailbox *mailbox;
1498         __be64 *inbox;
1499         int err;
1500
1501         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1502         if (IS_ERR(mailbox))
1503                 return PTR_ERR(mailbox);
1504         inbox = mailbox->buf;
1505
1506         inbox[0] = cpu_to_be64(virt);
1507         inbox[1] = cpu_to_be64(dma_addr);
1508
1509         err = mthca_cmd(dev, mailbox->dma, 1, 0, CMD_MAP_ICM,
1510                         CMD_TIME_CLASS_B, status);
1511
1512         mthca_free_mailbox(dev, mailbox);
1513
1514         if (!err)
1515                 mthca_dbg(dev, "Mapped page at %llx to %llx for ICM.\n",
1516                           (unsigned long long) dma_addr, (unsigned long long) virt);
1517
1518         return err;
1519 }
1520
1521 int mthca_UNMAP_ICM(struct mthca_dev *dev, u64 virt, u32 page_count, u8 *status)
1522 {
1523         mthca_dbg(dev, "Unmapping %d pages at %llx from ICM.\n",
1524                   page_count, (unsigned long long) virt);
1525
1526         return mthca_cmd(dev, virt, page_count, 0, CMD_UNMAP_ICM, CMD_TIME_CLASS_B, status);
1527 }
1528
1529 int mthca_MAP_ICM_AUX(struct mthca_dev *dev, struct mthca_icm *icm, u8 *status)
1530 {
1531         return mthca_map_cmd(dev, CMD_MAP_ICM_AUX, icm, -1, status);
1532 }
1533
1534 int mthca_UNMAP_ICM_AUX(struct mthca_dev *dev, u8 *status)
1535 {
1536         return mthca_cmd(dev, 0, 0, 0, CMD_UNMAP_ICM_AUX, CMD_TIME_CLASS_B, status);
1537 }
1538
1539 int mthca_SET_ICM_SIZE(struct mthca_dev *dev, u64 icm_size, u64 *aux_pages,
1540                        u8 *status)
1541 {
1542         int ret = mthca_cmd_imm(dev, icm_size, aux_pages, 0, 0, CMD_SET_ICM_SIZE,
1543                                 CMD_TIME_CLASS_A, status);
1544
1545         if (ret || status)
1546                 return ret;
1547
1548         /*
1549          * Round up number of system pages needed in case
1550          * MTHCA_ICM_PAGE_SIZE < PAGE_SIZE.
1551          */
1552         *aux_pages = ALIGN(*aux_pages, PAGE_SIZE / MTHCA_ICM_PAGE_SIZE) >>
1553                 (PAGE_SHIFT - MTHCA_ICM_PAGE_SHIFT);
1554
1555         return 0;
1556 }
1557
1558 int mthca_SW2HW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1559                     int mpt_index, u8 *status)
1560 {
1561         return mthca_cmd(dev, mailbox->dma, mpt_index, 0, CMD_SW2HW_MPT,
1562                          CMD_TIME_CLASS_B, status);
1563 }
1564
1565 int mthca_HW2SW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1566                     int mpt_index, u8 *status)
1567 {
1568         return mthca_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, mpt_index,
1569                              !mailbox, CMD_HW2SW_MPT,
1570                              CMD_TIME_CLASS_B, status);
1571 }
1572
1573 int mthca_WRITE_MTT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1574                     int num_mtt, u8 *status)
1575 {
1576         return mthca_cmd(dev, mailbox->dma, num_mtt, 0, CMD_WRITE_MTT,
1577                          CMD_TIME_CLASS_B, status);
1578 }
1579
1580 int mthca_SYNC_TPT(struct mthca_dev *dev, u8 *status)
1581 {
1582         return mthca_cmd(dev, 0, 0, 0, CMD_SYNC_TPT, CMD_TIME_CLASS_B, status);
1583 }
1584
1585 int mthca_MAP_EQ(struct mthca_dev *dev, u64 event_mask, int unmap,
1586                  int eq_num, u8 *status)
1587 {
1588         mthca_dbg(dev, "%s mask %016llx for eqn %d\n",
1589                   unmap ? "Clearing" : "Setting",
1590                   (unsigned long long) event_mask, eq_num);
1591         return mthca_cmd(dev, event_mask, (unmap << 31) | eq_num,
1592                          0, CMD_MAP_EQ, CMD_TIME_CLASS_B, status);
1593 }
1594
1595 int mthca_SW2HW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1596                    int eq_num, u8 *status)
1597 {
1598         return mthca_cmd(dev, mailbox->dma, eq_num, 0, CMD_SW2HW_EQ,
1599                          CMD_TIME_CLASS_A, status);
1600 }
1601
1602 int mthca_HW2SW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1603                    int eq_num, u8 *status)
1604 {
1605         return mthca_cmd_box(dev, 0, mailbox->dma, eq_num, 0,
1606                              CMD_HW2SW_EQ,
1607                              CMD_TIME_CLASS_A, status);
1608 }
1609
1610 int mthca_SW2HW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1611                    int cq_num, u8 *status)
1612 {
1613         return mthca_cmd(dev, mailbox->dma, cq_num, 0, CMD_SW2HW_CQ,
1614                         CMD_TIME_CLASS_A, status);
1615 }
1616
1617 int mthca_HW2SW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1618                    int cq_num, u8 *status)
1619 {
1620         return mthca_cmd_box(dev, 0, mailbox->dma, cq_num, 0,
1621                              CMD_HW2SW_CQ,
1622                              CMD_TIME_CLASS_A, status);
1623 }
1624
1625 int mthca_RESIZE_CQ(struct mthca_dev *dev, int cq_num, u32 lkey, u8 log_size,
1626                     u8 *status)
1627 {
1628         struct mthca_mailbox *mailbox;
1629         __be32 *inbox;
1630         int err;
1631
1632 #define RESIZE_CQ_IN_SIZE               0x40
1633 #define RESIZE_CQ_LOG_SIZE_OFFSET       0x0c
1634 #define RESIZE_CQ_LKEY_OFFSET           0x1c
1635
1636         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1637         if (IS_ERR(mailbox))
1638                 return PTR_ERR(mailbox);
1639         inbox = mailbox->buf;
1640
1641         memset(inbox, 0, RESIZE_CQ_IN_SIZE);
1642         /*
1643          * Leave start address fields zeroed out -- mthca assumes that
1644          * MRs for CQs always start at virtual address 0.
1645          */
1646         MTHCA_PUT(inbox, log_size, RESIZE_CQ_LOG_SIZE_OFFSET);
1647         MTHCA_PUT(inbox, lkey,     RESIZE_CQ_LKEY_OFFSET);
1648
1649         err = mthca_cmd(dev, mailbox->dma, cq_num, 1, CMD_RESIZE_CQ,
1650                         CMD_TIME_CLASS_B, status);
1651
1652         mthca_free_mailbox(dev, mailbox);
1653         return err;
1654 }
1655
1656 int mthca_SW2HW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1657                     int srq_num, u8 *status)
1658 {
1659         return mthca_cmd(dev, mailbox->dma, srq_num, 0, CMD_SW2HW_SRQ,
1660                         CMD_TIME_CLASS_A, status);
1661 }
1662
1663 int mthca_HW2SW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1664                     int srq_num, u8 *status)
1665 {
1666         return mthca_cmd_box(dev, 0, mailbox->dma, srq_num, 0,
1667                              CMD_HW2SW_SRQ,
1668                              CMD_TIME_CLASS_A, status);
1669 }
1670
1671 int mthca_QUERY_SRQ(struct mthca_dev *dev, u32 num,
1672                     struct mthca_mailbox *mailbox, u8 *status)
1673 {
1674         return mthca_cmd_box(dev, 0, mailbox->dma, num, 0,
1675                              CMD_QUERY_SRQ, CMD_TIME_CLASS_A, status);
1676 }
1677
1678 int mthca_ARM_SRQ(struct mthca_dev *dev, int srq_num, int limit, u8 *status)
1679 {
1680         return mthca_cmd(dev, limit, srq_num, 0, CMD_ARM_SRQ,
1681                          CMD_TIME_CLASS_B, status);
1682 }
1683
1684 int mthca_MODIFY_QP(struct mthca_dev *dev, enum ib_qp_state cur,
1685                     enum ib_qp_state next, u32 num, int is_ee,
1686                     struct mthca_mailbox *mailbox, u32 optmask,
1687                     u8 *status)
1688 {
1689         static const u16 op[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
1690                 [IB_QPS_RESET] = {
1691                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1692                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1693                         [IB_QPS_INIT]   = CMD_RST2INIT_QPEE,
1694                 },
1695                 [IB_QPS_INIT]  = {
1696                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1697                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1698                         [IB_QPS_INIT]   = CMD_INIT2INIT_QPEE,
1699                         [IB_QPS_RTR]    = CMD_INIT2RTR_QPEE,
1700                 },
1701                 [IB_QPS_RTR]   = {
1702                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1703                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1704                         [IB_QPS_RTS]    = CMD_RTR2RTS_QPEE,
1705                 },
1706                 [IB_QPS_RTS]   = {
1707                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1708                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1709                         [IB_QPS_RTS]    = CMD_RTS2RTS_QPEE,
1710                         [IB_QPS_SQD]    = CMD_RTS2SQD_QPEE,
1711                 },
1712                 [IB_QPS_SQD] = {
1713                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1714                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1715                         [IB_QPS_RTS]    = CMD_SQD2RTS_QPEE,
1716                         [IB_QPS_SQD]    = CMD_SQD2SQD_QPEE,
1717                 },
1718                 [IB_QPS_SQE] = {
1719                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1720                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1721                         [IB_QPS_RTS]    = CMD_SQERR2RTS_QPEE,
1722                 },
1723                 [IB_QPS_ERR] = {
1724                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1725                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1726                 }
1727         };
1728
1729         u8 op_mod = 0;
1730         int my_mailbox = 0;
1731         int err;
1732
1733         if (op[cur][next] == CMD_ERR2RST_QPEE) {
1734                 op_mod = 3;     /* don't write outbox, any->reset */
1735
1736                 /* For debugging */
1737                 if (!mailbox) {
1738                         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1739                         if (!IS_ERR(mailbox)) {
1740                                 my_mailbox = 1;
1741                                 op_mod     = 2; /* write outbox, any->reset */
1742                         } else
1743                                 mailbox = NULL;
1744                 }
1745
1746                 err = mthca_cmd_box(dev, 0, mailbox ? mailbox->dma : 0,
1747                                     (!!is_ee << 24) | num, op_mod,
1748                                     op[cur][next], CMD_TIME_CLASS_C, status);
1749
1750                 if (0 && mailbox) {
1751                         int i;
1752                         mthca_dbg(dev, "Dumping QP context:\n");
1753                         printk(" %08x\n", be32_to_cpup(mailbox->buf));
1754                         for (i = 0; i < 0x100 / 4; ++i) {
1755                                 if (i % 8 == 0)
1756                                         printk("[%02x] ", i * 4);
1757                                 printk(" %08x",
1758                                        be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
1759                                 if ((i + 1) % 8 == 0)
1760                                         printk("\n");
1761                         }
1762                 }
1763
1764                 if (my_mailbox)
1765                         mthca_free_mailbox(dev, mailbox);
1766         } else {
1767                 if (0) {
1768                         int i;
1769                         mthca_dbg(dev, "Dumping QP context:\n");
1770                         printk("  opt param mask: %08x\n", be32_to_cpup(mailbox->buf));
1771                         for (i = 0; i < 0x100 / 4; ++i) {
1772                                 if (i % 8 == 0)
1773                                         printk("  [%02x] ", i * 4);
1774                                 printk(" %08x",
1775                                        be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
1776                                 if ((i + 1) % 8 == 0)
1777                                         printk("\n");
1778                         }
1779                 }
1780
1781                 err = mthca_cmd(dev, mailbox->dma, optmask | (!!is_ee << 24) | num,
1782                                 op_mod, op[cur][next], CMD_TIME_CLASS_C, status);
1783         }
1784
1785         return err;
1786 }
1787
1788 int mthca_QUERY_QP(struct mthca_dev *dev, u32 num, int is_ee,
1789                    struct mthca_mailbox *mailbox, u8 *status)
1790 {
1791         return mthca_cmd_box(dev, 0, mailbox->dma, (!!is_ee << 24) | num, 0,
1792                              CMD_QUERY_QPEE, CMD_TIME_CLASS_A, status);
1793 }
1794
1795 int mthca_CONF_SPECIAL_QP(struct mthca_dev *dev, int type, u32 qpn,
1796                           u8 *status)
1797 {
1798         u8 op_mod;
1799
1800         switch (type) {
1801         case IB_QPT_SMI:
1802                 op_mod = 0;
1803                 break;
1804         case IB_QPT_GSI:
1805                 op_mod = 1;
1806                 break;
1807         case IB_QPT_RAW_IPV6:
1808                 op_mod = 2;
1809                 break;
1810         case IB_QPT_RAW_ETY:
1811                 op_mod = 3;
1812                 break;
1813         default:
1814                 return -EINVAL;
1815         }
1816
1817         return mthca_cmd(dev, 0, qpn, op_mod, CMD_CONF_SPECIAL_QP,
1818                          CMD_TIME_CLASS_B, status);
1819 }
1820
1821 int mthca_MAD_IFC(struct mthca_dev *dev, int ignore_mkey, int ignore_bkey,
1822                   int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
1823                   void *in_mad, void *response_mad, u8 *status)
1824 {
1825         struct mthca_mailbox *inmailbox, *outmailbox;
1826         void *inbox;
1827         int err;
1828         u32 in_modifier = port;
1829         u8 op_modifier = 0;
1830
1831 #define MAD_IFC_BOX_SIZE      0x400
1832 #define MAD_IFC_MY_QPN_OFFSET 0x100
1833 #define MAD_IFC_RQPN_OFFSET   0x104
1834 #define MAD_IFC_SL_OFFSET     0x108
1835 #define MAD_IFC_G_PATH_OFFSET 0x109
1836 #define MAD_IFC_RLID_OFFSET   0x10a
1837 #define MAD_IFC_PKEY_OFFSET   0x10e
1838 #define MAD_IFC_GRH_OFFSET    0x140
1839
1840         inmailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1841         if (IS_ERR(inmailbox))
1842                 return PTR_ERR(inmailbox);
1843         inbox = inmailbox->buf;
1844
1845         outmailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1846         if (IS_ERR(outmailbox)) {
1847                 mthca_free_mailbox(dev, inmailbox);
1848                 return PTR_ERR(outmailbox);
1849         }
1850
1851         memcpy(inbox, in_mad, 256);
1852
1853         /*
1854          * Key check traps can't be generated unless we have in_wc to
1855          * tell us where to send the trap.
1856          */
1857         if (ignore_mkey || !in_wc)
1858                 op_modifier |= 0x1;
1859         if (ignore_bkey || !in_wc)
1860                 op_modifier |= 0x2;
1861
1862         if (in_wc) {
1863                 u8 val;
1864
1865                 memset(inbox + 256, 0, 256);
1866
1867                 MTHCA_PUT(inbox, in_wc->qp_num,     MAD_IFC_MY_QPN_OFFSET);
1868                 MTHCA_PUT(inbox, in_wc->src_qp,     MAD_IFC_RQPN_OFFSET);
1869
1870                 val = in_wc->sl << 4;
1871                 MTHCA_PUT(inbox, val,               MAD_IFC_SL_OFFSET);
1872
1873                 val = in_wc->dlid_path_bits |
1874                         (in_wc->wc_flags & IB_WC_GRH ? 0x80 : 0);
1875                 MTHCA_PUT(inbox, val,               MAD_IFC_GRH_OFFSET);
1876
1877                 MTHCA_PUT(inbox, in_wc->slid,       MAD_IFC_RLID_OFFSET);
1878                 MTHCA_PUT(inbox, in_wc->pkey_index, MAD_IFC_PKEY_OFFSET);
1879
1880                 if (in_grh)
1881                         memcpy(inbox + MAD_IFC_GRH_OFFSET, in_grh, 40);
1882
1883                 op_modifier |= 0x10;
1884
1885                 in_modifier |= in_wc->slid << 16;
1886         }
1887
1888         err = mthca_cmd_box(dev, inmailbox->dma, outmailbox->dma,
1889                             in_modifier, op_modifier,
1890                             CMD_MAD_IFC, CMD_TIME_CLASS_C, status);
1891
1892         if (!err && !*status)
1893                 memcpy(response_mad, outmailbox->buf, 256);
1894
1895         mthca_free_mailbox(dev, inmailbox);
1896         mthca_free_mailbox(dev, outmailbox);
1897         return err;
1898 }
1899
1900 int mthca_READ_MGM(struct mthca_dev *dev, int index,
1901                    struct mthca_mailbox *mailbox, u8 *status)
1902 {
1903         return mthca_cmd_box(dev, 0, mailbox->dma, index, 0,
1904                              CMD_READ_MGM, CMD_TIME_CLASS_A, status);
1905 }
1906
1907 int mthca_WRITE_MGM(struct mthca_dev *dev, int index,
1908                     struct mthca_mailbox *mailbox, u8 *status)
1909 {
1910         return mthca_cmd(dev, mailbox->dma, index, 0, CMD_WRITE_MGM,
1911                          CMD_TIME_CLASS_A, status);
1912 }
1913
1914 int mthca_MGID_HASH(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1915                     u16 *hash, u8 *status)
1916 {
1917         u64 imm;
1918         int err;
1919
1920         err = mthca_cmd_imm(dev, mailbox->dma, &imm, 0, 0, CMD_MGID_HASH,
1921                             CMD_TIME_CLASS_A, status);
1922
1923         *hash = imm;
1924         return err;
1925 }
1926
1927 int mthca_NOP(struct mthca_dev *dev, u8 *status)
1928 {
1929         return mthca_cmd(dev, 0, 0x1f, 0, CMD_NOP, msecs_to_jiffies(100), status);
1930 }