SAFE public projects git trees. - safe/jmp/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
  35 #include <linux/completion.h>
  36 #include <linux/pci.h>
  37 #include <linux/errno.h>
  38 #include <linux/sched.h>
  39 #include <linux/slab.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         CMD_TIME_CLASS_D = 60 * HZ
 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         CMD_TIME_CLASS_D = 60 * HZ
 170 };
 171 #endif
 172
 173 enum {
 174         GO_BIT_TIMEOUT = HZ * 10
 175 };
 176
 177 struct mthca_cmd_context {
 178         struct completion done;
 179         int               result;
 180         int               next;
 181         u64               out_param;
 182         u16               token;
 183         u8                status;
 184 };
 185
 186 static int fw_cmd_doorbell = 0;
 187 module_param(fw_cmd_doorbell, int, 0644);
 188 MODULE_PARM_DESC(fw_cmd_doorbell, "post FW commands through doorbell page if nonzero "
 189                  "(and supported by FW)");
 190
 191 static inline int go_bit(struct mthca_dev *dev)
 192 {
 193         return readl(dev->hcr + HCR_STATUS_OFFSET) &
 194                 swab32(1 << HCR_GO_BIT);
 195 }
 196
 197 static void mthca_cmd_post_dbell(struct mthca_dev *dev,
 198                                  u64 in_param,
 199                                  u64 out_param,
 200                                  u32 in_modifier,
 201                                  u8 op_modifier,
 202                                  u16 op,
 203                                  u16 token)
 204 {
 205         void __iomem *ptr = dev->cmd.dbell_map;
 206         u16 *offs = dev->cmd.dbell_offsets;
 207
 208         __raw_writel((__force u32) cpu_to_be32(in_param >> 32),           ptr + offs[0]);
 209         wmb();
 210         __raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful),  ptr + offs[1]);
 211         wmb();
 212         __raw_writel((__force u32) cpu_to_be32(in_modifier),              ptr + offs[2]);
 213         wmb();
 214         __raw_writel((__force u32) cpu_to_be32(out_param >> 32),          ptr + offs[3]);
 215         wmb();
 216         __raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), ptr + offs[4]);
 217         wmb();
 218         __raw_writel((__force u32) cpu_to_be32(token << 16),              ptr + offs[5]);
 219         wmb();
 220         __raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT)                |
 221                                                (1 << HCA_E_BIT)                 |
 222                                                (op_modifier << HCR_OPMOD_SHIFT) |
 223                                                 op),                      ptr + offs[6]);
 224         wmb();
 225         __raw_writel((__force u32) 0,                                     ptr + offs[7]);
 226         wmb();
 227 }
 228
 229 static int mthca_cmd_post_hcr(struct mthca_dev *dev,
 230                               u64 in_param,
 231                               u64 out_param,
 232                               u32 in_modifier,
 233                               u8 op_modifier,
 234                               u16 op,
 235                               u16 token,
 236                               int event)
 237 {
 238         if (event) {
 239                 unsigned long end = jiffies + GO_BIT_TIMEOUT;
 240
 241                 while (go_bit(dev) && time_before(jiffies, end)) {
 242                         set_current_state(TASK_RUNNING);
 243                         schedule();
 244                 }
 245         }
 246
 247         if (go_bit(dev))
 248                 return -EAGAIN;
 249
 250         /*
 251          * We use writel (instead of something like memcpy_toio)
 252          * because writes of less than 32 bits to the HCR don't work
 253          * (and some architectures such as ia64 implement memcpy_toio
 254          * in terms of writeb).
 255          */
 256         __raw_writel((__force u32) cpu_to_be32(in_param >> 32),           dev->hcr + 0 * 4);
 257         __raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful),  dev->hcr + 1 * 4);
 258         __raw_writel((__force u32) cpu_to_be32(in_modifier),              dev->hcr + 2 * 4);
 259         __raw_writel((__force u32) cpu_to_be32(out_param >> 32),          dev->hcr + 3 * 4);
 260         __raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), dev->hcr + 4 * 4);
 261         __raw_writel((__force u32) cpu_to_be32(token << 16),              dev->hcr + 5 * 4);
 262
 263         /* __raw_writel may not order writes. */
 264         wmb();
 265
 266         __raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT)                |
 267                                                (event ? (1 << HCA_E_BIT) : 0)   |
 268                                                (op_modifier << HCR_OPMOD_SHIFT) |
 269                                                op),                       dev->hcr + 6 * 4);
 270
 271         return 0;
 272 }
 273
 274 static int mthca_cmd_post(struct mthca_dev *dev,
 275                           u64 in_param,
 276                           u64 out_param,
 277                           u32 in_modifier,
 278                           u8 op_modifier,
 279                           u16 op,
 280                           u16 token,
 281                           int event)
 282 {
 283         int err = 0;
 284
 285         mutex_lock(&dev->cmd.hcr_mutex);
 286
 287         if (event && dev->cmd.flags & MTHCA_CMD_POST_DOORBELLS && fw_cmd_doorbell)
 288                 mthca_cmd_post_dbell(dev, in_param, out_param, in_modifier,
 289                                            op_modifier, op, token);
 290         else
 291                 err = mthca_cmd_post_hcr(dev, in_param, out_param, in_modifier,
 292                                          op_modifier, op, token, event);
 293
 294         /*
 295          * Make sure that our HCR writes don't get mixed in with
 296          * writes from another CPU starting a FW command.
 297          */
 298         mmiowb();
 299
 300         mutex_unlock(&dev->cmd.hcr_mutex);
 301         return err;
 302 }
 303
 304 static int mthca_cmd_poll(struct mthca_dev *dev,
 305                           u64 in_param,
 306                           u64 *out_param,
 307                           int out_is_imm,
 308                           u32 in_modifier,
 309                           u8 op_modifier,
 310                           u16 op,
 311                           unsigned long timeout,
 312                           u8 *status)
 313 {
 314         int err = 0;
 315         unsigned long end;
 316
 317         down(&dev->cmd.poll_sem);
 318
 319         err = mthca_cmd_post(dev, in_param,
 320                              out_param ? *out_param : 0,
 321                              in_modifier, op_modifier,
 322                              op, CMD_POLL_TOKEN, 0);
 323         if (err)
 324                 goto out;
 325
 326         end = timeout + jiffies;
 327         while (go_bit(dev) && time_before(jiffies, end)) {
 328                 set_current_state(TASK_RUNNING);
 329                 schedule();
 330         }
 331
 332         if (go_bit(dev)) {
 333                 err = -EBUSY;
 334                 goto out;
 335         }
 336
 337         if (out_is_imm)
 338                 *out_param =
 339                         (u64) be32_to_cpu((__force __be32)
 340                                           __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET)) << 32 |
 341                         (u64) be32_to_cpu((__force __be32)
 342                                           __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET + 4));
 343
 344         *status = be32_to_cpu((__force __be32) __raw_readl(dev->hcr + HCR_STATUS_OFFSET)) >> 24;
 345
 346 out:
 347         up(&dev->cmd.poll_sem);
 348         return err;
 349 }
 350
 351 void mthca_cmd_event(struct mthca_dev *dev,
 352                      u16 token,
 353                      u8  status,
 354                      u64 out_param)
 355 {
 356         struct mthca_cmd_context *context =
 357                 &dev->cmd.context[token & dev->cmd.token_mask];
 358
 359         /* previously timed out command completing at long last */
 360         if (token != context->token)
 361                 return;
 362
 363         context->result    = 0;
 364         context->status    = status;
 365         context->out_param = out_param;
 366
 367         complete(&context->done);
 368 }
 369
 370 static int mthca_cmd_wait(struct mthca_dev *dev,
 371                           u64 in_param,
 372                           u64 *out_param,
 373                           int out_is_imm,
 374                           u32 in_modifier,
 375                           u8 op_modifier,
 376                           u16 op,
 377                           unsigned long timeout,
 378                           u8 *status)
 379 {
 380         int err = 0;
 381         struct mthca_cmd_context *context;
 382
 383         down(&dev->cmd.event_sem);
 384
 385         spin_lock(&dev->cmd.context_lock);
 386         BUG_ON(dev->cmd.free_head < 0);
 387         context = &dev->cmd.context[dev->cmd.free_head];
 388         context->token += dev->cmd.token_mask + 1;
 389         dev->cmd.free_head = context->next;
 390         spin_unlock(&dev->cmd.context_lock);
 391
 392         init_completion(&context->done);
 393
 394         err = mthca_cmd_post(dev, in_param,
 395                              out_param ? *out_param : 0,
 396                              in_modifier, op_modifier,
 397                              op, context->token, 1);
 398         if (err)
 399                 goto out;
 400
 401         if (!wait_for_completion_timeout(&context->done, timeout)) {
 402                 err = -EBUSY;
 403                 goto out;
 404         }
 405
 406         err = context->result;
 407         if (err)
 408                 goto out;
 409
 410         *status = context->status;
 411         if (*status)
 412                 mthca_dbg(dev, "Command %02x completed with status %02x\n",
 413                           op, *status);
 414
 415         if (out_is_imm)
 416                 *out_param = context->out_param;
 417
 418 out:
 419         spin_lock(&dev->cmd.context_lock);
 420         context->next = dev->cmd.free_head;
 421         dev->cmd.free_head = context - dev->cmd.context;
 422         spin_unlock(&dev->cmd.context_lock);
 423
 424         up(&dev->cmd.event_sem);
 425         return err;
 426 }
 427
 428 /* Invoke a command with an output mailbox */
 429 static int mthca_cmd_box(struct mthca_dev *dev,
 430                          u64 in_param,
 431                          u64 out_param,
 432                          u32 in_modifier,
 433                          u8 op_modifier,
 434                          u16 op,
 435                          unsigned long timeout,
 436                          u8 *status)
 437 {
 438         if (dev->cmd.flags & MTHCA_CMD_USE_EVENTS)
 439                 return mthca_cmd_wait(dev, in_param, &out_param, 0,
 440                                       in_modifier, op_modifier, op,
 441                                       timeout, status);
 442         else
 443                 return mthca_cmd_poll(dev, in_param, &out_param, 0,
 444                                       in_modifier, op_modifier, op,
 445                                       timeout, status);
 446 }
 447
 448 /* Invoke a command with no output parameter */
 449 static int mthca_cmd(struct mthca_dev *dev,
 450                      u64 in_param,
 451                      u32 in_modifier,
 452                      u8 op_modifier,
 453                      u16 op,
 454                      unsigned long timeout,
 455                      u8 *status)
 456 {
 457         return mthca_cmd_box(dev, in_param, 0, in_modifier,
 458                              op_modifier, op, timeout, status);
 459 }
 460
 461 /*
 462  * Invoke a command with an immediate output parameter (and copy the
 463  * output into the caller's out_param pointer after the command
 464  * executes).
 465  */
 466 static int mthca_cmd_imm(struct mthca_dev *dev,
 467                          u64 in_param,
 468                          u64 *out_param,
 469                          u32 in_modifier,
 470                          u8 op_modifier,
 471                          u16 op,
 472                          unsigned long timeout,
 473                          u8 *status)
 474 {
 475         if (dev->cmd.flags & MTHCA_CMD_USE_EVENTS)
 476                 return mthca_cmd_wait(dev, in_param, out_param, 1,
 477                                       in_modifier, op_modifier, op,
 478                                       timeout, status);
 479         else
 480                 return mthca_cmd_poll(dev, in_param, out_param, 1,
 481                                       in_modifier, op_modifier, op,
 482                                       timeout, status);
 483 }
 484
 485 int mthca_cmd_init(struct mthca_dev *dev)
 486 {
 487         mutex_init(&dev->cmd.hcr_mutex);
 488         sema_init(&dev->cmd.poll_sem, 1);
 489         dev->cmd.flags = 0;
 490
 491         dev->hcr = ioremap(pci_resource_start(dev->pdev, 0) + MTHCA_HCR_BASE,
 492                            MTHCA_HCR_SIZE);
 493         if (!dev->hcr) {
 494                 mthca_err(dev, "Couldn't map command register.");
 495                 return -ENOMEM;
 496         }
 497
 498         dev->cmd.pool = pci_pool_create("mthca_cmd", dev->pdev,
 499                                         MTHCA_MAILBOX_SIZE,
 500                                         MTHCA_MAILBOX_SIZE, 0);
 501         if (!dev->cmd.pool) {
 502                 iounmap(dev->hcr);
 503                 return -ENOMEM;
 504         }
 505
 506         return 0;
 507 }
 508
 509 void mthca_cmd_cleanup(struct mthca_dev *dev)
 510 {
 511         pci_pool_destroy(dev->cmd.pool);
 512         iounmap(dev->hcr);
 513         if (dev->cmd.flags & MTHCA_CMD_POST_DOORBELLS)
 514                 iounmap(dev->cmd.dbell_map);
 515 }
 516
 517 /*
 518  * Switch to using events to issue FW commands (should be called after
 519  * event queue to command events has been initialized).
 520  */
 521 int mthca_cmd_use_events(struct mthca_dev *dev)
 522 {
 523         int i;
 524
 525         dev->cmd.context = kmalloc(dev->cmd.max_cmds *
 526                                    sizeof (struct mthca_cmd_context),
 527                                    GFP_KERNEL);
 528         if (!dev->cmd.context)
 529                 return -ENOMEM;
 530
 531         for (i = 0; i < dev->cmd.max_cmds; ++i) {
 532                 dev->cmd.context[i].token = i;
 533                 dev->cmd.context[i].next = i + 1;
 534         }
 535
 536         dev->cmd.context[dev->cmd.max_cmds - 1].next = -1;
 537         dev->cmd.free_head = 0;
 538
 539         sema_init(&dev->cmd.event_sem, dev->cmd.max_cmds);
 540         spin_lock_init(&dev->cmd.context_lock);
 541
 542         for (dev->cmd.token_mask = 1;
 543              dev->cmd.token_mask < dev->cmd.max_cmds;
 544              dev->cmd.token_mask <<= 1)
 545                 ; /* nothing */
 546         --dev->cmd.token_mask;
 547
 548         dev->cmd.flags |= MTHCA_CMD_USE_EVENTS;
 549
 550         down(&dev->cmd.poll_sem);
 551
 552         return 0;
 553 }
 554
 555 /*
 556  * Switch back to polling (used when shutting down the device)
 557  */
 558 void mthca_cmd_use_polling(struct mthca_dev *dev)
 559 {
 560         int i;
 561
 562         dev->cmd.flags &= ~MTHCA_CMD_USE_EVENTS;
 563
 564         for (i = 0; i < dev->cmd.max_cmds; ++i)
 565                 down(&dev->cmd.event_sem);
 566
 567         kfree(dev->cmd.context);
 568
 569         up(&dev->cmd.poll_sem);
 570 }
 571
 572 struct mthca_mailbox *mthca_alloc_mailbox(struct mthca_dev *dev,
 573                                           gfp_t gfp_mask)
 574 {
 575         struct mthca_mailbox *mailbox;
 576
 577         mailbox = kmalloc(sizeof *mailbox, gfp_mask);
 578         if (!mailbox)
 579                 return ERR_PTR(-ENOMEM);
 580
 581         mailbox->buf = pci_pool_alloc(dev->cmd.pool, gfp_mask, &mailbox->dma);
 582         if (!mailbox->buf) {
 583                 kfree(mailbox);
 584                 return ERR_PTR(-ENOMEM);
 585         }
 586
 587         return mailbox;
 588 }
 589
 590 void mthca_free_mailbox(struct mthca_dev *dev, struct mthca_mailbox *mailbox)
 591 {
 592         if (!mailbox)
 593                 return;
 594
 595         pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma);
 596         kfree(mailbox);
 597 }
 598
 599 int mthca_SYS_EN(struct mthca_dev *dev, u8 *status)
 600 {
 601         u64 out;
 602         int ret;
 603
 604         ret = mthca_cmd_imm(dev, 0, &out, 0, 0, CMD_SYS_EN, CMD_TIME_CLASS_D, status);
 605
 606         if (*status == MTHCA_CMD_STAT_DDR_MEM_ERR)
 607                 mthca_warn(dev, "SYS_EN DDR error: syn=%x, sock=%d, "
 608                            "sladdr=%d, SPD source=%s\n",
 609                            (int) (out >> 6) & 0xf, (int) (out >> 4) & 3,
 610                            (int) (out >> 1) & 7, (int) out & 1 ? "NVMEM" : "DIMM");
 611
 612         return ret;
 613 }
 614
 615 int mthca_SYS_DIS(struct mthca_dev *dev, u8 *status)
 616 {
 617         return mthca_cmd(dev, 0, 0, 0, CMD_SYS_DIS, CMD_TIME_CLASS_C, status);
 618 }
 619
 620 static int mthca_map_cmd(struct mthca_dev *dev, u16 op, struct mthca_icm *icm,
 621                          u64 virt, u8 *status)
 622 {
 623         struct mthca_mailbox *mailbox;
 624         struct mthca_icm_iter iter;
 625         __be64 *pages;
 626         int lg;
 627         int nent = 0;
 628         int i;
 629         int err = 0;
 630         int ts = 0, tc = 0;
 631
 632         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 633         if (IS_ERR(mailbox))
 634                 return PTR_ERR(mailbox);
 635         memset(mailbox->buf, 0, MTHCA_MAILBOX_SIZE);
 636         pages = mailbox->buf;
 637
 638         for (mthca_icm_first(icm, &iter);
 639              !mthca_icm_last(&iter);
 640              mthca_icm_next(&iter)) {
 641                 /*
 642                  * We have to pass pages that are aligned to their
 643                  * size, so find the least significant 1 in the
 644                  * address or size and use that as our log2 size.
 645                  */
 646                 lg = ffs(mthca_icm_addr(&iter) | mthca_icm_size(&iter)) - 1;
 647                 if (lg < MTHCA_ICM_PAGE_SHIFT) {
 648                         mthca_warn(dev, "Got FW area not aligned to %d (%llx/%lx).\n",
 649                                    MTHCA_ICM_PAGE_SIZE,
 650                                    (unsigned long long) mthca_icm_addr(&iter),
 651                                    mthca_icm_size(&iter));
 652                         err = -EINVAL;
 653                         goto out;
 654                 }
 655                 for (i = 0; i < mthca_icm_size(&iter) >> lg; ++i) {
 656                         if (virt != -1) {
 657                                 pages[nent * 2] = cpu_to_be64(virt);
 658                                 virt += 1 << lg;
 659                         }
 660
 661                         pages[nent * 2 + 1] =
 662                                 cpu_to_be64((mthca_icm_addr(&iter) + (i << lg)) |
 663                                             (lg - MTHCA_ICM_PAGE_SHIFT));
 664                         ts += 1 << (lg - 10);
 665                         ++tc;
 666
 667                         if (++nent == MTHCA_MAILBOX_SIZE / 16) {
 668                                 err = mthca_cmd(dev, mailbox->dma, nent, 0, op,
 669                                                 CMD_TIME_CLASS_B, status);
 670                                 if (err || *status)
 671                                         goto out;
 672                                 nent = 0;
 673                         }
 674                 }
 675         }
 676
 677         if (nent)
 678                 err = mthca_cmd(dev, mailbox->dma, nent, 0, op,
 679                                 CMD_TIME_CLASS_B, status);
 680
 681         switch (op) {
 682         case CMD_MAP_FA:
 683                 mthca_dbg(dev, "Mapped %d chunks/%d KB for FW.\n", tc, ts);
 684                 break;
 685         case CMD_MAP_ICM_AUX:
 686                 mthca_dbg(dev, "Mapped %d chunks/%d KB for ICM aux.\n", tc, ts);
 687                 break;
 688         case CMD_MAP_ICM:
 689                 mthca_dbg(dev, "Mapped %d chunks/%d KB at %llx for ICM.\n",
 690                           tc, ts, (unsigned long long) virt - (ts << 10));
 691                 break;
 692         }
 693
 694 out:
 695         mthca_free_mailbox(dev, mailbox);
 696         return err;
 697 }
 698
 699 int mthca_MAP_FA(struct mthca_dev *dev, struct mthca_icm *icm, u8 *status)
 700 {
 701         return mthca_map_cmd(dev, CMD_MAP_FA, icm, -1, status);
 702 }
 703
 704 int mthca_UNMAP_FA(struct mthca_dev *dev, u8 *status)
 705 {
 706         return mthca_cmd(dev, 0, 0, 0, CMD_UNMAP_FA, CMD_TIME_CLASS_B, status);
 707 }
 708
 709 int mthca_RUN_FW(struct mthca_dev *dev, u8 *status)
 710 {
 711         return mthca_cmd(dev, 0, 0, 0, CMD_RUN_FW, CMD_TIME_CLASS_A, status);
 712 }
 713
 714 static void mthca_setup_cmd_doorbells(struct mthca_dev *dev, u64 base)
 715 {
 716         unsigned long addr;
 717         u16 max_off = 0;
 718         int i;
 719
 720         for (i = 0; i < 8; ++i)
 721                 max_off = max(max_off, dev->cmd.dbell_offsets[i]);
 722
 723         if ((base & PAGE_MASK) != ((base + max_off) & PAGE_MASK)) {
 724                 mthca_warn(dev, "Firmware doorbell region at 0x%016llx, "
 725                            "length 0x%x crosses a page boundary\n",
 726                            (unsigned long long) base, max_off);
 727                 return;
 728         }
 729
 730         addr = pci_resource_start(dev->pdev, 2) +
 731                 ((pci_resource_len(dev->pdev, 2) - 1) & base);
 732         dev->cmd.dbell_map = ioremap(addr, max_off + sizeof(u32));
 733         if (!dev->cmd.dbell_map)
 734                 return;
 735
 736         dev->cmd.flags |= MTHCA_CMD_POST_DOORBELLS;
 737         mthca_dbg(dev, "Mapped doorbell page for posting FW commands\n");
 738 }
 739
 740 int mthca_QUERY_FW(struct mthca_dev *dev, u8 *status)
 741 {
 742         struct mthca_mailbox *mailbox;
 743         u32 *outbox;
 744         u64 base;
 745         u32 tmp;
 746         int err = 0;
 747         u8 lg;
 748         int i;
 749
 750 #define QUERY_FW_OUT_SIZE             0x100
 751 #define QUERY_FW_VER_OFFSET            0x00
 752 #define QUERY_FW_MAX_CMD_OFFSET        0x0f
 753 #define QUERY_FW_ERR_START_OFFSET      0x30
 754 #define QUERY_FW_ERR_SIZE_OFFSET       0x38
 755
 756 #define QUERY_FW_CMD_DB_EN_OFFSET      0x10
 757 #define QUERY_FW_CMD_DB_OFFSET         0x50
 758 #define QUERY_FW_CMD_DB_BASE           0x60
 759
 760 #define QUERY_FW_START_OFFSET          0x20
 761 #define QUERY_FW_END_OFFSET            0x28
 762
 763 #define QUERY_FW_SIZE_OFFSET           0x00
 764 #define QUERY_FW_CLR_INT_BASE_OFFSET   0x20
 765 #define QUERY_FW_EQ_ARM_BASE_OFFSET    0x40
 766 #define QUERY_FW_EQ_SET_CI_BASE_OFFSET 0x48
 767
 768         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 769         if (IS_ERR(mailbox))
 770                 return PTR_ERR(mailbox);
 771         outbox = mailbox->buf;
 772
 773         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_FW,
 774                             CMD_TIME_CLASS_A, status);
 775
 776         if (err)
 777                 goto out;
 778
 779         MTHCA_GET(dev->fw_ver,   outbox, QUERY_FW_VER_OFFSET);
 780         /*
 781          * FW subminor version is at more significant bits than minor
 782          * version, so swap here.
 783          */
 784         dev->fw_ver = (dev->fw_ver & 0xffff00000000ull) |
 785                 ((dev->fw_ver & 0xffff0000ull) >> 16) |
 786                 ((dev->fw_ver & 0x0000ffffull) << 16);
 787
 788         MTHCA_GET(lg, outbox, QUERY_FW_MAX_CMD_OFFSET);
 789         dev->cmd.max_cmds = 1 << lg;
 790
 791         mthca_dbg(dev, "FW version %012llx, max commands %d\n",
 792                   (unsigned long long) dev->fw_ver, dev->cmd.max_cmds);
 793
 794         MTHCA_GET(dev->catas_err.addr, outbox, QUERY_FW_ERR_START_OFFSET);
 795         MTHCA_GET(dev->catas_err.size, outbox, QUERY_FW_ERR_SIZE_OFFSET);
 796
 797         mthca_dbg(dev, "Catastrophic error buffer at 0x%llx, size 0x%x\n",
 798                   (unsigned long long) dev->catas_err.addr, dev->catas_err.size);
 799
 800         MTHCA_GET(tmp, outbox, QUERY_FW_CMD_DB_EN_OFFSET);
 801         if (tmp & 0x1) {
 802                 mthca_dbg(dev, "FW supports commands through doorbells\n");
 803
 804                 MTHCA_GET(base, outbox, QUERY_FW_CMD_DB_BASE);
 805                 for (i = 0; i < MTHCA_CMD_NUM_DBELL_DWORDS; ++i)
 806                         MTHCA_GET(dev->cmd.dbell_offsets[i], outbox,
 807                                   QUERY_FW_CMD_DB_OFFSET + (i << 1));
 808
 809                 mthca_setup_cmd_doorbells(dev, base);
 810         }
 811
 812         if (mthca_is_memfree(dev)) {
 813                 MTHCA_GET(dev->fw.arbel.fw_pages,       outbox, QUERY_FW_SIZE_OFFSET);
 814                 MTHCA_GET(dev->fw.arbel.clr_int_base,   outbox, QUERY_FW_CLR_INT_BASE_OFFSET);
 815                 MTHCA_GET(dev->fw.arbel.eq_arm_base,    outbox, QUERY_FW_EQ_ARM_BASE_OFFSET);
 816                 MTHCA_GET(dev->fw.arbel.eq_set_ci_base, outbox, QUERY_FW_EQ_SET_CI_BASE_OFFSET);
 817                 mthca_dbg(dev, "FW size %d KB\n", dev->fw.arbel.fw_pages << 2);
 818
 819                 /*
 820                  * Round up number of system pages needed in case
 821                  * MTHCA_ICM_PAGE_SIZE < PAGE_SIZE.
 822                  */
 823                 dev->fw.arbel.fw_pages =
 824                         ALIGN(dev->fw.arbel.fw_pages, PAGE_SIZE / MTHCA_ICM_PAGE_SIZE) >>
 825                                 (PAGE_SHIFT - MTHCA_ICM_PAGE_SHIFT);
 826
 827                 mthca_dbg(dev, "Clear int @ %llx, EQ arm @ %llx, EQ set CI @ %llx\n",
 828                           (unsigned long long) dev->fw.arbel.clr_int_base,
 829                           (unsigned long long) dev->fw.arbel.eq_arm_base,
 830                           (unsigned long long) dev->fw.arbel.eq_set_ci_base);
 831         } else {
 832                 MTHCA_GET(dev->fw.tavor.fw_start, outbox, QUERY_FW_START_OFFSET);
 833                 MTHCA_GET(dev->fw.tavor.fw_end,   outbox, QUERY_FW_END_OFFSET);
 834
 835                 mthca_dbg(dev, "FW size %d KB (start %llx, end %llx)\n",
 836                           (int) ((dev->fw.tavor.fw_end - dev->fw.tavor.fw_start) >> 10),
 837                           (unsigned long long) dev->fw.tavor.fw_start,
 838                           (unsigned long long) dev->fw.tavor.fw_end);
 839         }
 840
 841 out:
 842         mthca_free_mailbox(dev, mailbox);
 843         return err;
 844 }
 845
 846 int mthca_ENABLE_LAM(struct mthca_dev *dev, u8 *status)
 847 {
 848         struct mthca_mailbox *mailbox;
 849         u8 info;
 850         u32 *outbox;
 851         int err = 0;
 852
 853 #define ENABLE_LAM_OUT_SIZE         0x100
 854 #define ENABLE_LAM_START_OFFSET     0x00
 855 #define ENABLE_LAM_END_OFFSET       0x08
 856 #define ENABLE_LAM_INFO_OFFSET      0x13
 857
 858 #define ENABLE_LAM_INFO_HIDDEN_FLAG (1 << 4)
 859 #define ENABLE_LAM_INFO_ECC_MASK    0x3
 860
 861         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 862         if (IS_ERR(mailbox))
 863                 return PTR_ERR(mailbox);
 864         outbox = mailbox->buf;
 865
 866         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_ENABLE_LAM,
 867                             CMD_TIME_CLASS_C, status);
 868
 869         if (err)
 870                 goto out;
 871
 872         if (*status == MTHCA_CMD_STAT_LAM_NOT_PRE)
 873                 goto out;
 874
 875         MTHCA_GET(dev->ddr_start, outbox, ENABLE_LAM_START_OFFSET);
 876         MTHCA_GET(dev->ddr_end,   outbox, ENABLE_LAM_END_OFFSET);
 877         MTHCA_GET(info,           outbox, ENABLE_LAM_INFO_OFFSET);
 878
 879         if (!!(info & ENABLE_LAM_INFO_HIDDEN_FLAG) !=
 880             !!(dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) {
 881                 mthca_info(dev, "FW reports that HCA-attached memory "
 882                            "is %s hidden; does not match PCI config\n",
 883                            (info & ENABLE_LAM_INFO_HIDDEN_FLAG) ?
 884                            "" : "not");
 885         }
 886         if (info & ENABLE_LAM_INFO_HIDDEN_FLAG)
 887                 mthca_dbg(dev, "HCA-attached memory is hidden.\n");
 888
 889         mthca_dbg(dev, "HCA memory size %d KB (start %llx, end %llx)\n",
 890                   (int) ((dev->ddr_end - dev->ddr_start) >> 10),
 891                   (unsigned long long) dev->ddr_start,
 892                   (unsigned long long) dev->ddr_end);
 893
 894 out:
 895         mthca_free_mailbox(dev, mailbox);
 896         return err;
 897 }
 898
 899 int mthca_DISABLE_LAM(struct mthca_dev *dev, u8 *status)
 900 {
 901         return mthca_cmd(dev, 0, 0, 0, CMD_SYS_DIS, CMD_TIME_CLASS_C, status);
 902 }
 903
 904 int mthca_QUERY_DDR(struct mthca_dev *dev, u8 *status)
 905 {
 906         struct mthca_mailbox *mailbox;
 907         u8 info;
 908         u32 *outbox;
 909         int err = 0;
 910
 911 #define QUERY_DDR_OUT_SIZE         0x100
 912 #define QUERY_DDR_START_OFFSET     0x00
 913 #define QUERY_DDR_END_OFFSET       0x08
 914 #define QUERY_DDR_INFO_OFFSET      0x13
 915
 916 #define QUERY_DDR_INFO_HIDDEN_FLAG (1 << 4)
 917 #define QUERY_DDR_INFO_ECC_MASK    0x3
 918
 919         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 920         if (IS_ERR(mailbox))
 921                 return PTR_ERR(mailbox);
 922         outbox = mailbox->buf;
 923
 924         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_DDR,
 925                             CMD_TIME_CLASS_A, status);
 926
 927         if (err)
 928                 goto out;
 929
 930         MTHCA_GET(dev->ddr_start, outbox, QUERY_DDR_START_OFFSET);
 931         MTHCA_GET(dev->ddr_end,   outbox, QUERY_DDR_END_OFFSET);
 932         MTHCA_GET(info,           outbox, QUERY_DDR_INFO_OFFSET);
 933
 934         if (!!(info & QUERY_DDR_INFO_HIDDEN_FLAG) !=
 935             !!(dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) {
 936                 mthca_info(dev, "FW reports that HCA-attached memory "
 937                            "is %s hidden; does not match PCI config\n",
 938                            (info & QUERY_DDR_INFO_HIDDEN_FLAG) ?
 939                            "" : "not");
 940         }
 941         if (info & QUERY_DDR_INFO_HIDDEN_FLAG)
 942                 mthca_dbg(dev, "HCA-attached memory is hidden.\n");
 943
 944         mthca_dbg(dev, "HCA memory size %d KB (start %llx, end %llx)\n",
 945                   (int) ((dev->ddr_end - dev->ddr_start) >> 10),
 946                   (unsigned long long) dev->ddr_start,
 947                   (unsigned long long) dev->ddr_end);
 948
 949 out:
 950         mthca_free_mailbox(dev, mailbox);
 951         return err;
 952 }
 953
 954 int mthca_QUERY_DEV_LIM(struct mthca_dev *dev,
 955                         struct mthca_dev_lim *dev_lim, u8 *status)
 956 {
 957         struct mthca_mailbox *mailbox;
 958         u32 *outbox;
 959         u8 field;
 960         u16 size;
 961         u16 stat_rate;
 962         int err;
 963
 964 #define QUERY_DEV_LIM_OUT_SIZE             0x100
 965 #define QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET     0x10
 966 #define QUERY_DEV_LIM_MAX_QP_SZ_OFFSET      0x11
 967 #define QUERY_DEV_LIM_RSVD_QP_OFFSET        0x12
 968 #define QUERY_DEV_LIM_MAX_QP_OFFSET         0x13
 969 #define QUERY_DEV_LIM_RSVD_SRQ_OFFSET       0x14
 970 #define QUERY_DEV_LIM_MAX_SRQ_OFFSET        0x15
 971 #define QUERY_DEV_LIM_RSVD_EEC_OFFSET       0x16
 972 #define QUERY_DEV_LIM_MAX_EEC_OFFSET        0x17
 973 #define QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET      0x19
 974 #define QUERY_DEV_LIM_RSVD_CQ_OFFSET        0x1a
 975 #define QUERY_DEV_LIM_MAX_CQ_OFFSET         0x1b
 976 #define QUERY_DEV_LIM_MAX_MPT_OFFSET        0x1d
 977 #define QUERY_DEV_LIM_RSVD_EQ_OFFSET        0x1e
 978 #define QUERY_DEV_LIM_MAX_EQ_OFFSET         0x1f
 979 #define QUERY_DEV_LIM_RSVD_MTT_OFFSET       0x20
 980 #define QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET     0x21
 981 #define QUERY_DEV_LIM_RSVD_MRW_OFFSET       0x22
 982 #define QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET    0x23
 983 #define QUERY_DEV_LIM_MAX_AV_OFFSET         0x27
 984 #define QUERY_DEV_LIM_MAX_REQ_QP_OFFSET     0x29
 985 #define QUERY_DEV_LIM_MAX_RES_QP_OFFSET     0x2b
 986 #define QUERY_DEV_LIM_MAX_RDMA_OFFSET       0x2f
 987 #define QUERY_DEV_LIM_RSZ_SRQ_OFFSET        0x33
 988 #define QUERY_DEV_LIM_ACK_DELAY_OFFSET      0x35
 989 #define QUERY_DEV_LIM_MTU_WIDTH_OFFSET      0x36
 990 #define QUERY_DEV_LIM_VL_PORT_OFFSET        0x37
 991 #define QUERY_DEV_LIM_MAX_GID_OFFSET        0x3b
 992 #define QUERY_DEV_LIM_RATE_SUPPORT_OFFSET   0x3c
 993 #define QUERY_DEV_LIM_MAX_PKEY_OFFSET       0x3f
 994 #define QUERY_DEV_LIM_FLAGS_OFFSET          0x44
 995 #define QUERY_DEV_LIM_RSVD_UAR_OFFSET       0x48
 996 #define QUERY_DEV_LIM_UAR_SZ_OFFSET         0x49
 997 #define QUERY_DEV_LIM_PAGE_SZ_OFFSET        0x4b
 998 #define QUERY_DEV_LIM_MAX_SG_OFFSET         0x51
 999 #define QUERY_DEV_LIM_MAX_DESC_SZ_OFFSET    0x52
1000 #define QUERY_DEV_LIM_MAX_SG_RQ_OFFSET      0x55
1001 #define QUERY_DEV_LIM_MAX_DESC_SZ_RQ_OFFSET 0x56
1002 #define QUERY_DEV_LIM_MAX_QP_MCG_OFFSET     0x61
1003 #define QUERY_DEV_LIM_RSVD_MCG_OFFSET       0x62
1004 #define QUERY_DEV_LIM_MAX_MCG_OFFSET        0x63
1005 #define QUERY_DEV_LIM_RSVD_PD_OFFSET        0x64
1006 #define QUERY_DEV_LIM_MAX_PD_OFFSET         0x65
1007 #define QUERY_DEV_LIM_RSVD_RDD_OFFSET       0x66
1008 #define QUERY_DEV_LIM_MAX_RDD_OFFSET        0x67
1009 #define QUERY_DEV_LIM_EEC_ENTRY_SZ_OFFSET   0x80
1010 #define QUERY_DEV_LIM_QPC_ENTRY_SZ_OFFSET   0x82
1011 #define QUERY_DEV_LIM_EEEC_ENTRY_SZ_OFFSET  0x84
1012 #define QUERY_DEV_LIM_EQPC_ENTRY_SZ_OFFSET  0x86
1013 #define QUERY_DEV_LIM_EQC_ENTRY_SZ_OFFSET   0x88
1014 #define QUERY_DEV_LIM_CQC_ENTRY_SZ_OFFSET   0x8a
1015 #define QUERY_DEV_LIM_SRQ_ENTRY_SZ_OFFSET   0x8c
1016 #define QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET   0x8e
1017 #define QUERY_DEV_LIM_MTT_ENTRY_SZ_OFFSET   0x90
1018 #define QUERY_DEV_LIM_MPT_ENTRY_SZ_OFFSET   0x92
1019 #define QUERY_DEV_LIM_PBL_SZ_OFFSET         0x96
1020 #define QUERY_DEV_LIM_BMME_FLAGS_OFFSET     0x97
1021 #define QUERY_DEV_LIM_RSVD_LKEY_OFFSET      0x98
1022 #define QUERY_DEV_LIM_LAMR_OFFSET           0x9f
1023 #define QUERY_DEV_LIM_MAX_ICM_SZ_OFFSET     0xa0
1024
1025         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1026         if (IS_ERR(mailbox))
1027                 return PTR_ERR(mailbox);
1028         outbox = mailbox->buf;
1029
1030         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_DEV_LIM,
1031                             CMD_TIME_CLASS_A, status);
1032
1033         if (err)
1034                 goto out;
1035
1036         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_QP_OFFSET);
1037         dev_lim->reserved_qps = 1 << (field & 0xf);
1038         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_OFFSET);
1039         dev_lim->max_qps = 1 << (field & 0x1f);
1040         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_SRQ_OFFSET);
1041         dev_lim->reserved_srqs = 1 << (field >> 4);
1042         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_OFFSET);
1043         dev_lim->max_srqs = 1 << (field & 0x1f);
1044         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EEC_OFFSET);
1045         dev_lim->reserved_eecs = 1 << (field & 0xf);
1046         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EEC_OFFSET);
1047         dev_lim->max_eecs = 1 << (field & 0x1f);
1048         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET);
1049         dev_lim->max_cq_sz = 1 << field;
1050         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_CQ_OFFSET);
1051         dev_lim->reserved_cqs = 1 << (field & 0xf);
1052         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_OFFSET);
1053         dev_lim->max_cqs = 1 << (field & 0x1f);
1054         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MPT_OFFSET);
1055         dev_lim->max_mpts = 1 << (field & 0x3f);
1056         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EQ_OFFSET);
1057         dev_lim->reserved_eqs = 1 << (field & 0xf);
1058         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EQ_OFFSET);
1059         dev_lim->max_eqs = 1 << (field & 0x7);
1060         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MTT_OFFSET);
1061         if (mthca_is_memfree(dev))
1062                 dev_lim->reserved_mtts = ALIGN((1 << (field >> 4)) * sizeof(u64),
1063                                                dev->limits.mtt_seg_size) / dev->limits.mtt_seg_size;
1064         else
1065                 dev_lim->reserved_mtts = 1 << (field >> 4);
1066         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET);
1067         dev_lim->max_mrw_sz = 1 << field;
1068         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MRW_OFFSET);
1069         dev_lim->reserved_mrws = 1 << (field & 0xf);
1070         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET);
1071         dev_lim->max_mtt_seg = 1 << (field & 0x3f);
1072         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_REQ_QP_OFFSET);
1073         dev_lim->max_requester_per_qp = 1 << (field & 0x3f);
1074         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RES_QP_OFFSET);
1075         dev_lim->max_responder_per_qp = 1 << (field & 0x3f);
1076         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RDMA_OFFSET);
1077         dev_lim->max_rdma_global = 1 << (field & 0x3f);
1078         MTHCA_GET(field, outbox, QUERY_DEV_LIM_ACK_DELAY_OFFSET);
1079         dev_lim->local_ca_ack_delay = field & 0x1f;
1080         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MTU_WIDTH_OFFSET);
1081         dev_lim->max_mtu        = field >> 4;
1082         dev_lim->max_port_width = field & 0xf;
1083         MTHCA_GET(field, outbox, QUERY_DEV_LIM_VL_PORT_OFFSET);
1084         dev_lim->max_vl    = field >> 4;
1085         dev_lim->num_ports = field & 0xf;
1086         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_GID_OFFSET);
1087         dev_lim->max_gids = 1 << (field & 0xf);
1088         MTHCA_GET(stat_rate, outbox, QUERY_DEV_LIM_RATE_SUPPORT_OFFSET);
1089         dev_lim->stat_rate_support = stat_rate;
1090         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_PKEY_OFFSET);
1091         dev_lim->max_pkeys = 1 << (field & 0xf);
1092         MTHCA_GET(dev_lim->flags, outbox, QUERY_DEV_LIM_FLAGS_OFFSET);
1093         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_UAR_OFFSET);
1094         dev_lim->reserved_uars = field >> 4;
1095         MTHCA_GET(field, outbox, QUERY_DEV_LIM_UAR_SZ_OFFSET);
1096         dev_lim->uar_size = 1 << ((field & 0x3f) + 20);
1097         MTHCA_GET(field, outbox, QUERY_DEV_LIM_PAGE_SZ_OFFSET);
1098         dev_lim->min_page_sz = 1 << field;
1099         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SG_OFFSET);
1100         dev_lim->max_sg = field;
1101
1102         MTHCA_GET(size, outbox, QUERY_DEV_LIM_MAX_DESC_SZ_OFFSET);
1103         dev_lim->max_desc_sz = size;
1104
1105         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_MCG_OFFSET);
1106         dev_lim->max_qp_per_mcg = 1 << field;
1107         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MCG_OFFSET);
1108         dev_lim->reserved_mgms = field & 0xf;
1109         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MCG_OFFSET);
1110         dev_lim->max_mcgs = 1 << field;
1111         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_PD_OFFSET);
1112         dev_lim->reserved_pds = field >> 4;
1113         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_PD_OFFSET);
1114         dev_lim->max_pds = 1 << (field & 0x3f);
1115         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_RDD_OFFSET);
1116         dev_lim->reserved_rdds = field >> 4;
1117         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RDD_OFFSET);
1118         dev_lim->max_rdds = 1 << (field & 0x3f);
1119
1120         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EEC_ENTRY_SZ_OFFSET);
1121         dev_lim->eec_entry_sz = size;
1122         MTHCA_GET(size, outbox, QUERY_DEV_LIM_QPC_ENTRY_SZ_OFFSET);
1123         dev_lim->qpc_entry_sz = size;
1124         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EEEC_ENTRY_SZ_OFFSET);
1125         dev_lim->eeec_entry_sz = size;
1126         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EQPC_ENTRY_SZ_OFFSET);
1127         dev_lim->eqpc_entry_sz = size;
1128         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EQC_ENTRY_SZ_OFFSET);
1129         dev_lim->eqc_entry_sz = size;
1130         MTHCA_GET(size, outbox, QUERY_DEV_LIM_CQC_ENTRY_SZ_OFFSET);
1131         dev_lim->cqc_entry_sz = size;
1132         MTHCA_GET(size, outbox, QUERY_DEV_LIM_SRQ_ENTRY_SZ_OFFSET);
1133         dev_lim->srq_entry_sz = size;
1134         MTHCA_GET(size, outbox, QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET);
1135         dev_lim->uar_scratch_entry_sz = size;
1136
1137         if (mthca_is_memfree(dev)) {
1138                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET);
1139                 dev_lim->max_srq_sz = 1 << field;
1140                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET);
1141                 dev_lim->max_qp_sz = 1 << field;
1142                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSZ_SRQ_OFFSET);
1143                 dev_lim->hca.arbel.resize_srq = field & 1;
1144                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SG_RQ_OFFSET);
1145                 dev_lim->max_sg = min_t(int, field, dev_lim->max_sg);
1146                 MTHCA_GET(size, outbox, QUERY_DEV_LIM_MAX_DESC_SZ_RQ_OFFSET);
1147                 dev_lim->max_desc_sz = min_t(int, size, dev_lim->max_desc_sz);
1148                 MTHCA_GET(size, outbox, QUERY_DEV_LIM_MPT_ENTRY_SZ_OFFSET);
1149                 dev_lim->mpt_entry_sz = size;
1150                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_PBL_SZ_OFFSET);
1151                 dev_lim->hca.arbel.max_pbl_sz = 1 << (field & 0x3f);
1152                 MTHCA_GET(dev_lim->hca.arbel.bmme_flags, outbox,
1153                           QUERY_DEV_LIM_BMME_FLAGS_OFFSET);
1154                 MTHCA_GET(dev_lim->hca.arbel.reserved_lkey, outbox,
1155                           QUERY_DEV_LIM_RSVD_LKEY_OFFSET);
1156                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_LAMR_OFFSET);
1157                 dev_lim->hca.arbel.lam_required = field & 1;
1158                 MTHCA_GET(dev_lim->hca.arbel.max_icm_sz, outbox,
1159                           QUERY_DEV_LIM_MAX_ICM_SZ_OFFSET);
1160
1161                 if (dev_lim->hca.arbel.bmme_flags & 1)
1162                         mthca_dbg(dev, "Base MM extensions: yes "
1163                                   "(flags %d, max PBL %d, rsvd L_Key %08x)\n",
1164                                   dev_lim->hca.arbel.bmme_flags,
1165                                   dev_lim->hca.arbel.max_pbl_sz,
1166                                   dev_lim->hca.arbel.reserved_lkey);
1167                 else
1168                         mthca_dbg(dev, "Base MM extensions: no\n");
1169
1170                 mthca_dbg(dev, "Max ICM size %lld MB\n",
1171                           (unsigned long long) dev_lim->hca.arbel.max_icm_sz >> 20);
1172         } else {
1173                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET);
1174                 dev_lim->max_srq_sz = (1 << field) - 1;
1175                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET);
1176                 dev_lim->max_qp_sz = (1 << field) - 1;
1177                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_AV_OFFSET);
1178                 dev_lim->hca.tavor.max_avs = 1 << (field & 0x3f);
1179                 dev_lim->mpt_entry_sz = MTHCA_MPT_ENTRY_SIZE;
1180         }
1181
1182         mthca_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
1183                   dev_lim->max_qps, dev_lim->reserved_qps, dev_lim->qpc_entry_sz);
1184         mthca_dbg(dev, "Max SRQs: %d, reserved SRQs: %d, entry size: %d\n",
1185                   dev_lim->max_srqs, dev_lim->reserved_srqs, dev_lim->srq_entry_sz);
1186         mthca_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
1187                   dev_lim->max_cqs, dev_lim->reserved_cqs, dev_lim->cqc_entry_sz);
1188         mthca_dbg(dev, "Max EQs: %d, reserved EQs: %d, entry size: %d\n",
1189                   dev_lim->max_eqs, dev_lim->reserved_eqs, dev_lim->eqc_entry_sz);
1190         mthca_dbg(dev, "reserved MPTs: %d, reserved MTTs: %d\n",
1191                   dev_lim->reserved_mrws, dev_lim->reserved_mtts);
1192         mthca_dbg(dev, "Max PDs: %d, reserved PDs: %d, reserved UARs: %d\n",
1193                   dev_lim->max_pds, dev_lim->reserved_pds, dev_lim->reserved_uars);
1194         mthca_dbg(dev, "Max QP/MCG: %d, reserved MGMs: %d\n",
1195                   dev_lim->max_pds, dev_lim->reserved_mgms);
1196         mthca_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
1197                   dev_lim->max_cq_sz, dev_lim->max_qp_sz, dev_lim->max_srq_sz);
1198
1199         mthca_dbg(dev, "Flags: %08x\n", dev_lim->flags);
1200
1201 out:
1202         mthca_free_mailbox(dev, mailbox);
1203         return err;
1204 }
1205
1206 static void get_board_id(void *vsd, char *board_id)
1207 {
1208         int i;
1209
1210 #define VSD_OFFSET_SIG1         0x00
1211 #define VSD_OFFSET_SIG2         0xde
1212 #define VSD_OFFSET_MLX_BOARD_ID 0xd0
1213 #define VSD_OFFSET_TS_BOARD_ID  0x20
1214
1215 #define VSD_SIGNATURE_TOPSPIN   0x5ad
1216
1217         memset(board_id, 0, MTHCA_BOARD_ID_LEN);
1218
1219         if (be16_to_cpup(vsd + VSD_OFFSET_SIG1) == VSD_SIGNATURE_TOPSPIN &&
1220             be16_to_cpup(vsd + VSD_OFFSET_SIG2) == VSD_SIGNATURE_TOPSPIN) {
1221                 strlcpy(board_id, vsd + VSD_OFFSET_TS_BOARD_ID, MTHCA_BOARD_ID_LEN);
1222         } else {
1223                 /*
1224                  * The board ID is a string but the firmware byte
1225                  * swaps each 4-byte word before passing it back to
1226                  * us.  Therefore we need to swab it before printing.
1227                  */
1228                 for (i = 0; i < 4; ++i)
1229                         ((u32 *) board_id)[i] =
1230                                 swab32(*(u32 *) (vsd + VSD_OFFSET_MLX_BOARD_ID + i * 4));
1231         }
1232 }
1233
1234 int mthca_QUERY_ADAPTER(struct mthca_dev *dev,
1235                         struct mthca_adapter *adapter, u8 *status)
1236 {
1237         struct mthca_mailbox *mailbox;
1238         u32 *outbox;
1239         int err;
1240
1241 #define QUERY_ADAPTER_OUT_SIZE             0x100
1242 #define QUERY_ADAPTER_VENDOR_ID_OFFSET     0x00
1243 #define QUERY_ADAPTER_DEVICE_ID_OFFSET     0x04
1244 #define QUERY_ADAPTER_REVISION_ID_OFFSET   0x08
1245 #define QUERY_ADAPTER_INTA_PIN_OFFSET      0x10
1246 #define QUERY_ADAPTER_VSD_OFFSET           0x20
1247
1248         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1249         if (IS_ERR(mailbox))
1250                 return PTR_ERR(mailbox);
1251         outbox = mailbox->buf;
1252
1253         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_ADAPTER,
1254                             CMD_TIME_CLASS_A, status);
1255
1256         if (err)
1257                 goto out;
1258
1259         if (!mthca_is_memfree(dev)) {
1260                 MTHCA_GET(adapter->vendor_id, outbox,
1261                           QUERY_ADAPTER_VENDOR_ID_OFFSET);
1262                 MTHCA_GET(adapter->device_id, outbox,
1263                           QUERY_ADAPTER_DEVICE_ID_OFFSET);
1264                 MTHCA_GET(adapter->revision_id, outbox,
1265                           QUERY_ADAPTER_REVISION_ID_OFFSET);
1266         }
1267         MTHCA_GET(adapter->inta_pin, outbox,    QUERY_ADAPTER_INTA_PIN_OFFSET);
1268
1269         get_board_id(outbox + QUERY_ADAPTER_VSD_OFFSET / 4,
1270                      adapter->board_id);
1271
1272 out:
1273         mthca_free_mailbox(dev, mailbox);
1274         return err;
1275 }
1276
1277 int mthca_INIT_HCA(struct mthca_dev *dev,
1278                    struct mthca_init_hca_param *param,
1279                    u8 *status)
1280 {
1281         struct mthca_mailbox *mailbox;
1282         __be32 *inbox;
1283         int err;
1284
1285 #define INIT_HCA_IN_SIZE                 0x200
1286 #define INIT_HCA_FLAGS1_OFFSET           0x00c
1287 #define INIT_HCA_FLAGS2_OFFSET           0x014
1288 #define INIT_HCA_QPC_OFFSET              0x020
1289 #define  INIT_HCA_QPC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x10)
1290 #define  INIT_HCA_LOG_QP_OFFSET          (INIT_HCA_QPC_OFFSET + 0x17)
1291 #define  INIT_HCA_EEC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x20)
1292 #define  INIT_HCA_LOG_EEC_OFFSET         (INIT_HCA_QPC_OFFSET + 0x27)
1293 #define  INIT_HCA_SRQC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x28)
1294 #define  INIT_HCA_LOG_SRQ_OFFSET         (INIT_HCA_QPC_OFFSET + 0x2f)
1295 #define  INIT_HCA_CQC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x30)
1296 #define  INIT_HCA_LOG_CQ_OFFSET          (INIT_HCA_QPC_OFFSET + 0x37)
1297 #define  INIT_HCA_EQPC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x40)
1298 #define  INIT_HCA_EEEC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x50)
1299 #define  INIT_HCA_EQC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x60)
1300 #define  INIT_HCA_LOG_EQ_OFFSET          (INIT_HCA_QPC_OFFSET + 0x67)
1301 #define  INIT_HCA_RDB_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x70)
1302 #define INIT_HCA_UDAV_OFFSET             0x0b0
1303 #define  INIT_HCA_UDAV_LKEY_OFFSET       (INIT_HCA_UDAV_OFFSET + 0x0)
1304 #define  INIT_HCA_UDAV_PD_OFFSET         (INIT_HCA_UDAV_OFFSET + 0x4)
1305 #define INIT_HCA_MCAST_OFFSET            0x0c0
1306 #define  INIT_HCA_MC_BASE_OFFSET         (INIT_HCA_MCAST_OFFSET + 0x00)
1307 #define  INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x12)
1308 #define  INIT_HCA_MC_HASH_SZ_OFFSET      (INIT_HCA_MCAST_OFFSET + 0x16)
1309 #define  INIT_HCA_LOG_MC_TABLE_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x1b)
1310 #define INIT_HCA_TPT_OFFSET              0x0f0
1311 #define  INIT_HCA_MPT_BASE_OFFSET        (INIT_HCA_TPT_OFFSET + 0x00)
1312 #define  INIT_HCA_MTT_SEG_SZ_OFFSET      (INIT_HCA_TPT_OFFSET + 0x09)
1313 #define  INIT_HCA_LOG_MPT_SZ_OFFSET      (INIT_HCA_TPT_OFFSET + 0x0b)
1314 #define  INIT_HCA_MTT_BASE_OFFSET        (INIT_HCA_TPT_OFFSET + 0x10)
1315 #define INIT_HCA_UAR_OFFSET              0x120
1316 #define  INIT_HCA_UAR_BASE_OFFSET        (INIT_HCA_UAR_OFFSET + 0x00)
1317 #define  INIT_HCA_UARC_SZ_OFFSET         (INIT_HCA_UAR_OFFSET + 0x09)
1318 #define  INIT_HCA_LOG_UAR_SZ_OFFSET      (INIT_HCA_UAR_OFFSET + 0x0a)
1319 #define  INIT_HCA_UAR_PAGE_SZ_OFFSET     (INIT_HCA_UAR_OFFSET + 0x0b)
1320 #define  INIT_HCA_UAR_SCATCH_BASE_OFFSET (INIT_HCA_UAR_OFFSET + 0x10)
1321 #define  INIT_HCA_UAR_CTX_BASE_OFFSET    (INIT_HCA_UAR_OFFSET + 0x18)
1322
1323         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1324         if (IS_ERR(mailbox))
1325                 return PTR_ERR(mailbox);
1326         inbox = mailbox->buf;
1327
1328         memset(inbox, 0, INIT_HCA_IN_SIZE);
1329
1330         if (dev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
1331                 MTHCA_PUT(inbox, 0x1, INIT_HCA_FLAGS1_OFFSET);
1332
1333 #if defined(__LITTLE_ENDIAN)
1334         *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) &= ~cpu_to_be32(1 << 1);
1335 #elif defined(__BIG_ENDIAN)
1336         *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) |= cpu_to_be32(1 << 1);
1337 #else
1338 #error Host endianness not defined
1339 #endif
1340         /* Check port for UD address vector: */
1341         *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) |= cpu_to_be32(1);
1342
1343         /* Enable IPoIB checksumming if we can: */
1344         if (dev->device_cap_flags & IB_DEVICE_UD_IP_CSUM)
1345                 *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) |= cpu_to_be32(7 << 3);
1346
1347         /* We leave wqe_quota, responder_exu, etc as 0 (default) */
1348
1349         /* QPC/EEC/CQC/EQC/RDB attributes */
1350
1351         MTHCA_PUT(inbox, param->qpc_base,     INIT_HCA_QPC_BASE_OFFSET);
1352         MTHCA_PUT(inbox, param->log_num_qps,  INIT_HCA_LOG_QP_OFFSET);
1353         MTHCA_PUT(inbox, param->eec_base,     INIT_HCA_EEC_BASE_OFFSET);
1354         MTHCA_PUT(inbox, param->log_num_eecs, INIT_HCA_LOG_EEC_OFFSET);
1355         MTHCA_PUT(inbox, param->srqc_base,    INIT_HCA_SRQC_BASE_OFFSET);
1356         MTHCA_PUT(inbox, param->log_num_srqs, INIT_HCA_LOG_SRQ_OFFSET);
1357         MTHCA_PUT(inbox, param->cqc_base,     INIT_HCA_CQC_BASE_OFFSET);
1358         MTHCA_PUT(inbox, param->log_num_cqs,  INIT_HCA_LOG_CQ_OFFSET);
1359         MTHCA_PUT(inbox, param->eqpc_base,    INIT_HCA_EQPC_BASE_OFFSET);
1360         MTHCA_PUT(inbox, param->eeec_base,    INIT_HCA_EEEC_BASE_OFFSET);
1361         MTHCA_PUT(inbox, param->eqc_base,     INIT_HCA_EQC_BASE_OFFSET);
1362         MTHCA_PUT(inbox, param->log_num_eqs,  INIT_HCA_LOG_EQ_OFFSET);
1363         MTHCA_PUT(inbox, param->rdb_base,     INIT_HCA_RDB_BASE_OFFSET);
1364
1365         /* UD AV attributes */
1366
1367         /* multicast attributes */
1368
1369         MTHCA_PUT(inbox, param->mc_base,         INIT_HCA_MC_BASE_OFFSET);
1370         MTHCA_PUT(inbox, param->log_mc_entry_sz, INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET);
1371         MTHCA_PUT(inbox, param->mc_hash_sz,      INIT_HCA_MC_HASH_SZ_OFFSET);
1372         MTHCA_PUT(inbox, param->log_mc_table_sz, INIT_HCA_LOG_MC_TABLE_SZ_OFFSET);
1373
1374         /* TPT attributes */
1375
1376         MTHCA_PUT(inbox, param->mpt_base,   INIT_HCA_MPT_BASE_OFFSET);
1377         if (!mthca_is_memfree(dev))
1378                 MTHCA_PUT(inbox, param->mtt_seg_sz, INIT_HCA_MTT_SEG_SZ_OFFSET);
1379         MTHCA_PUT(inbox, param->log_mpt_sz, INIT_HCA_LOG_MPT_SZ_OFFSET);
1380         MTHCA_PUT(inbox, param->mtt_base,   INIT_HCA_MTT_BASE_OFFSET);
1381
1382         /* UAR attributes */
1383         {
1384                 u8 uar_page_sz = PAGE_SHIFT - 12;
1385                 MTHCA_PUT(inbox, uar_page_sz, INIT_HCA_UAR_PAGE_SZ_OFFSET);
1386         }
1387
1388         MTHCA_PUT(inbox, param->uar_scratch_base, INIT_HCA_UAR_SCATCH_BASE_OFFSET);
1389
1390         if (mthca_is_memfree(dev)) {
1391                 MTHCA_PUT(inbox, param->log_uarc_sz, INIT_HCA_UARC_SZ_OFFSET);
1392                 MTHCA_PUT(inbox, param->log_uar_sz,  INIT_HCA_LOG_UAR_SZ_OFFSET);
1393                 MTHCA_PUT(inbox, param->uarc_base,   INIT_HCA_UAR_CTX_BASE_OFFSET);
1394         }
1395
1396         err = mthca_cmd(dev, mailbox->dma, 0, 0, CMD_INIT_HCA, CMD_TIME_CLASS_D, status);
1397
1398         mthca_free_mailbox(dev, mailbox);
1399         return err;
1400 }
1401
1402 int mthca_INIT_IB(struct mthca_dev *dev,
1403                   struct mthca_init_ib_param *param,
1404                   int port, u8 *status)
1405 {
1406         struct mthca_mailbox *mailbox;
1407         u32 *inbox;
1408         int err;
1409         u32 flags;
1410
1411 #define INIT_IB_IN_SIZE          56
1412 #define INIT_IB_FLAGS_OFFSET     0x00
1413 #define INIT_IB_FLAG_SIG         (1 << 18)
1414 #define INIT_IB_FLAG_NG          (1 << 17)
1415 #define INIT_IB_FLAG_G0          (1 << 16)
1416 #define INIT_IB_VL_SHIFT         4
1417 #define INIT_IB_PORT_WIDTH_SHIFT 8
1418 #define INIT_IB_MTU_SHIFT        12
1419 #define INIT_IB_MAX_GID_OFFSET   0x06
1420 #define INIT_IB_MAX_PKEY_OFFSET  0x0a
1421 #define INIT_IB_GUID0_OFFSET     0x10
1422 #define INIT_IB_NODE_GUID_OFFSET 0x18
1423 #define INIT_IB_SI_GUID_OFFSET   0x20
1424
1425         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1426         if (IS_ERR(mailbox))
1427                 return PTR_ERR(mailbox);
1428         inbox = mailbox->buf;
1429
1430         memset(inbox, 0, INIT_IB_IN_SIZE);
1431
1432         flags = 0;
1433         flags |= param->set_guid0     ? INIT_IB_FLAG_G0  : 0;
1434         flags |= param->set_node_guid ? INIT_IB_FLAG_NG  : 0;
1435         flags |= param->set_si_guid   ? INIT_IB_FLAG_SIG : 0;
1436         flags |= param->vl_cap << INIT_IB_VL_SHIFT;
1437         flags |= param->port_width << INIT_IB_PORT_WIDTH_SHIFT;
1438         flags |= param->mtu_cap << INIT_IB_MTU_SHIFT;
1439         MTHCA_PUT(inbox, flags, INIT_IB_FLAGS_OFFSET);
1440
1441         MTHCA_PUT(inbox, param->gid_cap,   INIT_IB_MAX_GID_OFFSET);
1442         MTHCA_PUT(inbox, param->pkey_cap,  INIT_IB_MAX_PKEY_OFFSET);
1443         MTHCA_PUT(inbox, param->guid0,     INIT_IB_GUID0_OFFSET);
1444         MTHCA_PUT(inbox, param->node_guid, INIT_IB_NODE_GUID_OFFSET);
1445         MTHCA_PUT(inbox, param->si_guid,   INIT_IB_SI_GUID_OFFSET);
1446
1447         err = mthca_cmd(dev, mailbox->dma, port, 0, CMD_INIT_IB,
1448                         CMD_TIME_CLASS_A, status);
1449
1450         mthca_free_mailbox(dev, mailbox);
1451         return err;
1452 }
1453
1454 int mthca_CLOSE_IB(struct mthca_dev *dev, int port, u8 *status)
1455 {
1456         return mthca_cmd(dev, 0, port, 0, CMD_CLOSE_IB, CMD_TIME_CLASS_A, status);
1457 }
1458
1459 int mthca_CLOSE_HCA(struct mthca_dev *dev, int panic, u8 *status)
1460 {
1461         return mthca_cmd(dev, 0, 0, panic, CMD_CLOSE_HCA, CMD_TIME_CLASS_C, status);
1462 }
1463
1464 int mthca_SET_IB(struct mthca_dev *dev, struct mthca_set_ib_param *param,
1465                  int port, u8 *status)
1466 {
1467         struct mthca_mailbox *mailbox;
1468         u32 *inbox;
1469         int err;
1470         u32 flags = 0;
1471
1472 #define SET_IB_IN_SIZE         0x40
1473 #define SET_IB_FLAGS_OFFSET    0x00
1474 #define SET_IB_FLAG_SIG        (1 << 18)
1475 #define SET_IB_FLAG_RQK        (1 <<  0)
1476 #define SET_IB_CAP_MASK_OFFSET 0x04
1477 #define SET_IB_SI_GUID_OFFSET  0x08
1478
1479         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1480         if (IS_ERR(mailbox))
1481                 return PTR_ERR(mailbox);
1482         inbox = mailbox->buf;
1483
1484         memset(inbox, 0, SET_IB_IN_SIZE);
1485
1486         flags |= param->set_si_guid     ? SET_IB_FLAG_SIG : 0;
1487         flags |= param->reset_qkey_viol ? SET_IB_FLAG_RQK : 0;
1488         MTHCA_PUT(inbox, flags, SET_IB_FLAGS_OFFSET);
1489
1490         MTHCA_PUT(inbox, param->cap_mask, SET_IB_CAP_MASK_OFFSET);
1491         MTHCA_PUT(inbox, param->si_guid,  SET_IB_SI_GUID_OFFSET);
1492
1493         err = mthca_cmd(dev, mailbox->dma, port, 0, CMD_SET_IB,
1494                         CMD_TIME_CLASS_B, status);
1495
1496         mthca_free_mailbox(dev, mailbox);
1497         return err;
1498 }
1499
1500 int mthca_MAP_ICM(struct mthca_dev *dev, struct mthca_icm *icm, u64 virt, u8 *status)
1501 {
1502         return mthca_map_cmd(dev, CMD_MAP_ICM, icm, virt, status);
1503 }
1504
1505 int mthca_MAP_ICM_page(struct mthca_dev *dev, u64 dma_addr, u64 virt, u8 *status)
1506 {
1507         struct mthca_mailbox *mailbox;
1508         __be64 *inbox;
1509         int err;
1510
1511         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1512         if (IS_ERR(mailbox))
1513                 return PTR_ERR(mailbox);
1514         inbox = mailbox->buf;
1515
1516         inbox[0] = cpu_to_be64(virt);
1517         inbox[1] = cpu_to_be64(dma_addr);
1518
1519         err = mthca_cmd(dev, mailbox->dma, 1, 0, CMD_MAP_ICM,
1520                         CMD_TIME_CLASS_B, status);
1521
1522         mthca_free_mailbox(dev, mailbox);
1523
1524         if (!err)
1525                 mthca_dbg(dev, "Mapped page at %llx to %llx for ICM.\n",
1526                           (unsigned long long) dma_addr, (unsigned long long) virt);
1527
1528         return err;
1529 }
1530
1531 int mthca_UNMAP_ICM(struct mthca_dev *dev, u64 virt, u32 page_count, u8 *status)
1532 {
1533         mthca_dbg(dev, "Unmapping %d pages at %llx from ICM.\n",
1534                   page_count, (unsigned long long) virt);
1535
1536         return mthca_cmd(dev, virt, page_count, 0, CMD_UNMAP_ICM, CMD_TIME_CLASS_B, status);
1537 }
1538
1539 int mthca_MAP_ICM_AUX(struct mthca_dev *dev, struct mthca_icm *icm, u8 *status)
1540 {
1541         return mthca_map_cmd(dev, CMD_MAP_ICM_AUX, icm, -1, status);
1542 }
1543
1544 int mthca_UNMAP_ICM_AUX(struct mthca_dev *dev, u8 *status)
1545 {
1546         return mthca_cmd(dev, 0, 0, 0, CMD_UNMAP_ICM_AUX, CMD_TIME_CLASS_B, status);
1547 }
1548
1549 int mthca_SET_ICM_SIZE(struct mthca_dev *dev, u64 icm_size, u64 *aux_pages,
1550                        u8 *status)
1551 {
1552         int ret = mthca_cmd_imm(dev, icm_size, aux_pages, 0, 0, CMD_SET_ICM_SIZE,
1553                                 CMD_TIME_CLASS_A, status);
1554
1555         if (ret || status)
1556                 return ret;
1557
1558         /*
1559          * Round up number of system pages needed in case
1560          * MTHCA_ICM_PAGE_SIZE < PAGE_SIZE.
1561          */
1562         *aux_pages = ALIGN(*aux_pages, PAGE_SIZE / MTHCA_ICM_PAGE_SIZE) >>
1563                 (PAGE_SHIFT - MTHCA_ICM_PAGE_SHIFT);
1564
1565         return 0;
1566 }
1567
1568 int mthca_SW2HW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1569                     int mpt_index, u8 *status)
1570 {
1571         return mthca_cmd(dev, mailbox->dma, mpt_index, 0, CMD_SW2HW_MPT,
1572                          CMD_TIME_CLASS_B, status);
1573 }
1574
1575 int mthca_HW2SW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1576                     int mpt_index, u8 *status)
1577 {
1578         return mthca_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, mpt_index,
1579                              !mailbox, CMD_HW2SW_MPT,
1580                              CMD_TIME_CLASS_B, status);
1581 }
1582
1583 int mthca_WRITE_MTT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1584                     int num_mtt, u8 *status)
1585 {
1586         return mthca_cmd(dev, mailbox->dma, num_mtt, 0, CMD_WRITE_MTT,
1587                          CMD_TIME_CLASS_B, status);
1588 }
1589
1590 int mthca_SYNC_TPT(struct mthca_dev *dev, u8 *status)
1591 {
1592         return mthca_cmd(dev, 0, 0, 0, CMD_SYNC_TPT, CMD_TIME_CLASS_B, status);
1593 }
1594
1595 int mthca_MAP_EQ(struct mthca_dev *dev, u64 event_mask, int unmap,
1596                  int eq_num, u8 *status)
1597 {
1598         mthca_dbg(dev, "%s mask %016llx for eqn %d\n",
1599                   unmap ? "Clearing" : "Setting",
1600                   (unsigned long long) event_mask, eq_num);
1601         return mthca_cmd(dev, event_mask, (unmap << 31) | eq_num,
1602                          0, CMD_MAP_EQ, CMD_TIME_CLASS_B, status);
1603 }
1604
1605 int mthca_SW2HW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1606                    int eq_num, u8 *status)
1607 {
1608         return mthca_cmd(dev, mailbox->dma, eq_num, 0, CMD_SW2HW_EQ,
1609                          CMD_TIME_CLASS_A, status);
1610 }
1611
1612 int mthca_HW2SW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1613                    int eq_num, u8 *status)
1614 {
1615         return mthca_cmd_box(dev, 0, mailbox->dma, eq_num, 0,
1616                              CMD_HW2SW_EQ,
1617                              CMD_TIME_CLASS_A, status);
1618 }
1619
1620 int mthca_SW2HW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1621                    int cq_num, u8 *status)
1622 {
1623         return mthca_cmd(dev, mailbox->dma, cq_num, 0, CMD_SW2HW_CQ,
1624                         CMD_TIME_CLASS_A, status);
1625 }
1626
1627 int mthca_HW2SW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1628                    int cq_num, u8 *status)
1629 {
1630         return mthca_cmd_box(dev, 0, mailbox->dma, cq_num, 0,
1631                              CMD_HW2SW_CQ,
1632                              CMD_TIME_CLASS_A, status);
1633 }
1634
1635 int mthca_RESIZE_CQ(struct mthca_dev *dev, int cq_num, u32 lkey, u8 log_size,
1636                     u8 *status)
1637 {
1638         struct mthca_mailbox *mailbox;
1639         __be32 *inbox;
1640         int err;
1641
1642 #define RESIZE_CQ_IN_SIZE               0x40
1643 #define RESIZE_CQ_LOG_SIZE_OFFSET       0x0c
1644 #define RESIZE_CQ_LKEY_OFFSET           0x1c
1645
1646         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1647         if (IS_ERR(mailbox))
1648                 return PTR_ERR(mailbox);
1649         inbox = mailbox->buf;
1650
1651         memset(inbox, 0, RESIZE_CQ_IN_SIZE);
1652         /*
1653          * Leave start address fields zeroed out -- mthca assumes that
1654          * MRs for CQs always start at virtual address 0.
1655          */
1656         MTHCA_PUT(inbox, log_size, RESIZE_CQ_LOG_SIZE_OFFSET);
1657         MTHCA_PUT(inbox, lkey,     RESIZE_CQ_LKEY_OFFSET);
1658
1659         err = mthca_cmd(dev, mailbox->dma, cq_num, 1, CMD_RESIZE_CQ,
1660                         CMD_TIME_CLASS_B, status);
1661
1662         mthca_free_mailbox(dev, mailbox);
1663         return err;
1664 }
1665
1666 int mthca_SW2HW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1667                     int srq_num, u8 *status)
1668 {
1669         return mthca_cmd(dev, mailbox->dma, srq_num, 0, CMD_SW2HW_SRQ,
1670                         CMD_TIME_CLASS_A, status);
1671 }
1672
1673 int mthca_HW2SW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1674                     int srq_num, u8 *status)
1675 {
1676         return mthca_cmd_box(dev, 0, mailbox->dma, srq_num, 0,
1677                              CMD_HW2SW_SRQ,
1678                              CMD_TIME_CLASS_A, status);
1679 }
1680
1681 int mthca_QUERY_SRQ(struct mthca_dev *dev, u32 num,
1682                     struct mthca_mailbox *mailbox, u8 *status)
1683 {
1684         return mthca_cmd_box(dev, 0, mailbox->dma, num, 0,
1685                              CMD_QUERY_SRQ, CMD_TIME_CLASS_A, status);
1686 }
1687
1688 int mthca_ARM_SRQ(struct mthca_dev *dev, int srq_num, int limit, u8 *status)
1689 {
1690         return mthca_cmd(dev, limit, srq_num, 0, CMD_ARM_SRQ,
1691                          CMD_TIME_CLASS_B, status);
1692 }
1693
1694 int mthca_MODIFY_QP(struct mthca_dev *dev, enum ib_qp_state cur,
1695                     enum ib_qp_state next, u32 num, int is_ee,
1696                     struct mthca_mailbox *mailbox, u32 optmask,
1697                     u8 *status)
1698 {
1699         static const u16 op[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = {
1700                 [IB_QPS_RESET] = {
1701                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1702                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1703                         [IB_QPS_INIT]   = CMD_RST2INIT_QPEE,
1704                 },
1705                 [IB_QPS_INIT]  = {
1706                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1707                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1708                         [IB_QPS_INIT]   = CMD_INIT2INIT_QPEE,
1709                         [IB_QPS_RTR]    = CMD_INIT2RTR_QPEE,
1710                 },
1711                 [IB_QPS_RTR]   = {
1712                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1713                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1714                         [IB_QPS_RTS]    = CMD_RTR2RTS_QPEE,
1715                 },
1716                 [IB_QPS_RTS]   = {
1717                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1718                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1719                         [IB_QPS_RTS]    = CMD_RTS2RTS_QPEE,
1720                         [IB_QPS_SQD]    = CMD_RTS2SQD_QPEE,
1721                 },
1722                 [IB_QPS_SQD] = {
1723                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1724                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1725                         [IB_QPS_RTS]    = CMD_SQD2RTS_QPEE,
1726                         [IB_QPS_SQD]    = CMD_SQD2SQD_QPEE,
1727                 },
1728                 [IB_QPS_SQE] = {
1729                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1730                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1731                         [IB_QPS_RTS]    = CMD_SQERR2RTS_QPEE,
1732                 },
1733                 [IB_QPS_ERR] = {
1734                         [IB_QPS_RESET]  = CMD_ERR2RST_QPEE,
1735                         [IB_QPS_ERR]    = CMD_2ERR_QPEE,
1736                 }
1737         };
1738
1739         u8 op_mod = 0;
1740         int my_mailbox = 0;
1741         int err;
1742
1743         if (op[cur][next] == CMD_ERR2RST_QPEE) {
1744                 op_mod = 3;     /* don't write outbox, any->reset */
1745
1746                 /* For debugging */
1747                 if (!mailbox) {
1748                         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1749                         if (!IS_ERR(mailbox)) {
1750                                 my_mailbox = 1;
1751                                 op_mod     = 2; /* write outbox, any->reset */
1752                         } else
1753                                 mailbox = NULL;
1754                 }
1755
1756                 err = mthca_cmd_box(dev, 0, mailbox ? mailbox->dma : 0,
1757                                     (!!is_ee << 24) | num, op_mod,
1758                                     op[cur][next], CMD_TIME_CLASS_C, status);
1759
1760                 if (0 && mailbox) {
1761                         int i;
1762                         mthca_dbg(dev, "Dumping QP context:\n");
1763                         printk(" %08x\n", be32_to_cpup(mailbox->buf));
1764                         for (i = 0; i < 0x100 / 4; ++i) {
1765                                 if (i % 8 == 0)
1766                                         printk("[%02x] ", i * 4);
1767                                 printk(" %08x",
1768                                        be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
1769                                 if ((i + 1) % 8 == 0)
1770                                         printk("\n");
1771                         }
1772                 }
1773
1774                 if (my_mailbox)
1775                         mthca_free_mailbox(dev, mailbox);
1776         } else {
1777                 if (0) {
1778                         int i;
1779                         mthca_dbg(dev, "Dumping QP context:\n");
1780                         printk("  opt param mask: %08x\n", be32_to_cpup(mailbox->buf));
1781                         for (i = 0; i < 0x100 / 4; ++i) {
1782                                 if (i % 8 == 0)
1783                                         printk("  [%02x] ", i * 4);
1784                                 printk(" %08x",
1785                                        be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
1786                                 if ((i + 1) % 8 == 0)
1787                                         printk("\n");
1788                         }
1789                 }
1790
1791                 err = mthca_cmd(dev, mailbox->dma, optmask | (!!is_ee << 24) | num,
1792                                 op_mod, op[cur][next], CMD_TIME_CLASS_C, status);
1793         }
1794
1795         return err;
1796 }
1797
1798 int mthca_QUERY_QP(struct mthca_dev *dev, u32 num, int is_ee,
1799                    struct mthca_mailbox *mailbox, u8 *status)
1800 {
1801         return mthca_cmd_box(dev, 0, mailbox->dma, (!!is_ee << 24) | num, 0,
1802                              CMD_QUERY_QPEE, CMD_TIME_CLASS_A, status);
1803 }
1804
1805 int mthca_CONF_SPECIAL_QP(struct mthca_dev *dev, int type, u32 qpn,
1806                           u8 *status)
1807 {
1808         u8 op_mod;
1809
1810         switch (type) {
1811         case IB_QPT_SMI:
1812                 op_mod = 0;
1813                 break;
1814         case IB_QPT_GSI:
1815                 op_mod = 1;
1816                 break;
1817         case IB_QPT_RAW_IPV6:
1818                 op_mod = 2;
1819                 break;
1820         case IB_QPT_RAW_ETY:
1821                 op_mod = 3;
1822                 break;
1823         default:
1824                 return -EINVAL;
1825         }
1826
1827         return mthca_cmd(dev, 0, qpn, op_mod, CMD_CONF_SPECIAL_QP,
1828                          CMD_TIME_CLASS_B, status);
1829 }
1830
1831 int mthca_MAD_IFC(struct mthca_dev *dev, int ignore_mkey, int ignore_bkey,
1832                   int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
1833                   void *in_mad, void *response_mad, u8 *status)
1834 {
1835         struct mthca_mailbox *inmailbox, *outmailbox;
1836         void *inbox;
1837         int err;
1838         u32 in_modifier = port;
1839         u8 op_modifier = 0;
1840
1841 #define MAD_IFC_BOX_SIZE      0x400
1842 #define MAD_IFC_MY_QPN_OFFSET 0x100
1843 #define MAD_IFC_RQPN_OFFSET   0x108
1844 #define MAD_IFC_SL_OFFSET     0x10c
1845 #define MAD_IFC_G_PATH_OFFSET 0x10d
1846 #define MAD_IFC_RLID_OFFSET   0x10e
1847 #define MAD_IFC_PKEY_OFFSET   0x112
1848 #define MAD_IFC_GRH_OFFSET    0x140
1849
1850         inmailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1851         if (IS_ERR(inmailbox))
1852                 return PTR_ERR(inmailbox);
1853         inbox = inmailbox->buf;
1854
1855         outmailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1856         if (IS_ERR(outmailbox)) {
1857                 mthca_free_mailbox(dev, inmailbox);
1858                 return PTR_ERR(outmailbox);
1859         }
1860
1861         memcpy(inbox, in_mad, 256);
1862
1863         /*
1864          * Key check traps can't be generated unless we have in_wc to
1865          * tell us where to send the trap.
1866          */
1867         if (ignore_mkey || !in_wc)
1868                 op_modifier |= 0x1;
1869         if (ignore_bkey || !in_wc)
1870                 op_modifier |= 0x2;
1871
1872         if (in_wc) {
1873                 u8 val;
1874
1875                 memset(inbox + 256, 0, 256);
1876
1877                 MTHCA_PUT(inbox, in_wc->qp->qp_num, MAD_IFC_MY_QPN_OFFSET);
1878                 MTHCA_PUT(inbox, in_wc->src_qp,     MAD_IFC_RQPN_OFFSET);
1879
1880                 val = in_wc->sl << 4;
1881                 MTHCA_PUT(inbox, val,               MAD_IFC_SL_OFFSET);
1882
1883                 val = in_wc->dlid_path_bits |
1884                         (in_wc->wc_flags & IB_WC_GRH ? 0x80 : 0);
1885                 MTHCA_PUT(inbox, val,               MAD_IFC_G_PATH_OFFSET);
1886
1887                 MTHCA_PUT(inbox, in_wc->slid,       MAD_IFC_RLID_OFFSET);
1888                 MTHCA_PUT(inbox, in_wc->pkey_index, MAD_IFC_PKEY_OFFSET);
1889
1890                 if (in_grh)
1891                         memcpy(inbox + MAD_IFC_GRH_OFFSET, in_grh, 40);
1892
1893                 op_modifier |= 0x4;
1894
1895                 in_modifier |= in_wc->slid << 16;
1896         }
1897
1898         err = mthca_cmd_box(dev, inmailbox->dma, outmailbox->dma,
1899                             in_modifier, op_modifier,
1900                             CMD_MAD_IFC, CMD_TIME_CLASS_C, status);
1901
1902         if (!err && !*status)
1903                 memcpy(response_mad, outmailbox->buf, 256);
1904
1905         mthca_free_mailbox(dev, inmailbox);
1906         mthca_free_mailbox(dev, outmailbox);
1907         return err;
1908 }
1909
1910 int mthca_READ_MGM(struct mthca_dev *dev, int index,
1911                    struct mthca_mailbox *mailbox, u8 *status)
1912 {
1913         return mthca_cmd_box(dev, 0, mailbox->dma, index, 0,
1914                              CMD_READ_MGM, CMD_TIME_CLASS_A, status);
1915 }
1916
1917 int mthca_WRITE_MGM(struct mthca_dev *dev, int index,
1918                     struct mthca_mailbox *mailbox, u8 *status)
1919 {
1920         return mthca_cmd(dev, mailbox->dma, index, 0, CMD_WRITE_MGM,
1921                          CMD_TIME_CLASS_A, status);
1922 }
1923
1924 int mthca_MGID_HASH(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1925                     u16 *hash, u8 *status)
1926 {
1927         u64 imm;
1928         int err;
1929
1930         err = mthca_cmd_imm(dev, mailbox->dma, &imm, 0, 0, CMD_MGID_HASH,
1931                             CMD_TIME_CLASS_A, status);
1932
1933         *hash = imm;
1934         return err;
1935 }
1936
1937 int mthca_NOP(struct mthca_dev *dev, u8 *status)
1938 {
1939         return mthca_cmd(dev, 0, 0x1f, 0, CMD_NOP, msecs_to_jiffies(100), status);
1940 }