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 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 inline int go_bit(struct mthca_dev *dev)
 186 {
 187         return readl(dev->hcr + HCR_STATUS_OFFSET) &
 188                 swab32(1 << HCR_GO_BIT);
 189 }
 190
 191 static int mthca_cmd_post(struct mthca_dev *dev,
 192                           u64 in_param,
 193                           u64 out_param,
 194                           u32 in_modifier,
 195                           u8 op_modifier,
 196                           u16 op,
 197                           u16 token,
 198                           int event)
 199 {
 200         int err = 0;
 201
 202         if (down_interruptible(&dev->cmd.hcr_sem))
 203                 return -EINTR;
 204
 205         if (event) {
 206                 unsigned long end = jiffies + GO_BIT_TIMEOUT;
 207
 208                 while (go_bit(dev) && time_before(jiffies, end)) {
 209                         set_current_state(TASK_RUNNING);
 210                         schedule();
 211                 }
 212         }
 213
 214         if (go_bit(dev)) {
 215                 err = -EAGAIN;
 216                 goto out;
 217         }
 218
 219         /*
 220          * We use writel (instead of something like memcpy_toio)
 221          * because writes of less than 32 bits to the HCR don't work
 222          * (and some architectures such as ia64 implement memcpy_toio
 223          * in terms of writeb).
 224          */
 225         __raw_writel((__force u32) cpu_to_be32(in_param >> 32),           dev->hcr + 0 * 4);
 226         __raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful),  dev->hcr + 1 * 4);
 227         __raw_writel((__force u32) cpu_to_be32(in_modifier),              dev->hcr + 2 * 4);
 228         __raw_writel((__force u32) cpu_to_be32(out_param >> 32),          dev->hcr + 3 * 4);
 229         __raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), dev->hcr + 4 * 4);
 230         __raw_writel((__force u32) cpu_to_be32(token << 16),              dev->hcr + 5 * 4);
 231
 232         /* __raw_writel may not order writes. */
 233         wmb();
 234
 235         __raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT)                |
 236                                                (event ? (1 << HCA_E_BIT) : 0)   |
 237                                                (op_modifier << HCR_OPMOD_SHIFT) |
 238                                                op),                       dev->hcr + 6 * 4);
 239
 240 out:
 241         up(&dev->cmd.hcr_sem);
 242         return err;
 243 }
 244
 245 static int mthca_cmd_poll(struct mthca_dev *dev,
 246                           u64 in_param,
 247                           u64 *out_param,
 248                           int out_is_imm,
 249                           u32 in_modifier,
 250                           u8 op_modifier,
 251                           u16 op,
 252                           unsigned long timeout,
 253                           u8 *status)
 254 {
 255         int err = 0;
 256         unsigned long end;
 257
 258         if (down_interruptible(&dev->cmd.poll_sem))
 259                 return -EINTR;
 260
 261         err = mthca_cmd_post(dev, in_param,
 262                              out_param ? *out_param : 0,
 263                              in_modifier, op_modifier,
 264                              op, CMD_POLL_TOKEN, 0);
 265         if (err)
 266                 goto out;
 267
 268         end = timeout + jiffies;
 269         while (go_bit(dev) && time_before(jiffies, end)) {
 270                 set_current_state(TASK_RUNNING);
 271                 schedule();
 272         }
 273
 274         if (go_bit(dev)) {
 275                 err = -EBUSY;
 276                 goto out;
 277         }
 278
 279         if (out_is_imm)
 280                 *out_param =
 281                         (u64) be32_to_cpu((__force __be32)
 282                                           __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET)) << 32 |
 283                         (u64) be32_to_cpu((__force __be32)
 284                                           __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET + 4));
 285
 286         *status = be32_to_cpu((__force __be32) __raw_readl(dev->hcr + HCR_STATUS_OFFSET)) >> 24;
 287
 288 out:
 289         up(&dev->cmd.poll_sem);
 290         return err;
 291 }
 292
 293 void mthca_cmd_event(struct mthca_dev *dev,
 294                      u16 token,
 295                      u8  status,
 296                      u64 out_param)
 297 {
 298         struct mthca_cmd_context *context =
 299                 &dev->cmd.context[token & dev->cmd.token_mask];
 300
 301         /* previously timed out command completing at long last */
 302         if (token != context->token)
 303                 return;
 304
 305         context->result    = 0;
 306         context->status    = status;
 307         context->out_param = out_param;
 308
 309         context->token += dev->cmd.token_mask + 1;
 310
 311         complete(&context->done);
 312 }
 313
 314 static void event_timeout(unsigned long context_ptr)
 315 {
 316         struct mthca_cmd_context *context =
 317                 (struct mthca_cmd_context *) context_ptr;
 318
 319         context->result = -EBUSY;
 320         complete(&context->done);
 321 }
 322
 323 static int mthca_cmd_wait(struct mthca_dev *dev,
 324                           u64 in_param,
 325                           u64 *out_param,
 326                           int out_is_imm,
 327                           u32 in_modifier,
 328                           u8 op_modifier,
 329                           u16 op,
 330                           unsigned long timeout,
 331                           u8 *status)
 332 {
 333         int err = 0;
 334         struct mthca_cmd_context *context;
 335
 336         if (down_interruptible(&dev->cmd.event_sem))
 337                 return -EINTR;
 338
 339         spin_lock(&dev->cmd.context_lock);
 340         BUG_ON(dev->cmd.free_head < 0);
 341         context = &dev->cmd.context[dev->cmd.free_head];
 342         dev->cmd.free_head = context->next;
 343         spin_unlock(&dev->cmd.context_lock);
 344
 345         init_completion(&context->done);
 346
 347         err = mthca_cmd_post(dev, in_param,
 348                              out_param ? *out_param : 0,
 349                              in_modifier, op_modifier,
 350                              op, context->token, 1);
 351         if (err)
 352                 goto out;
 353
 354         context->timer.expires  = jiffies + timeout;
 355         add_timer(&context->timer);
 356
 357         wait_for_completion(&context->done);
 358         del_timer_sync(&context->timer);
 359
 360         err = context->result;
 361         if (err)
 362                 goto out;
 363
 364         *status = context->status;
 365         if (*status)
 366                 mthca_dbg(dev, "Command %02x completed with status %02x\n",
 367                           op, *status);
 368
 369         if (out_is_imm)
 370                 *out_param = context->out_param;
 371
 372 out:
 373         spin_lock(&dev->cmd.context_lock);
 374         context->next = dev->cmd.free_head;
 375         dev->cmd.free_head = context - dev->cmd.context;
 376         spin_unlock(&dev->cmd.context_lock);
 377
 378         up(&dev->cmd.event_sem);
 379         return err;
 380 }
 381
 382 /* Invoke a command with an output mailbox */
 383 static int mthca_cmd_box(struct mthca_dev *dev,
 384                          u64 in_param,
 385                          u64 out_param,
 386                          u32 in_modifier,
 387                          u8 op_modifier,
 388                          u16 op,
 389                          unsigned long timeout,
 390                          u8 *status)
 391 {
 392         if (dev->cmd.use_events)
 393                 return mthca_cmd_wait(dev, in_param, &out_param, 0,
 394                                       in_modifier, op_modifier, op,
 395                                       timeout, status);
 396         else
 397                 return mthca_cmd_poll(dev, in_param, &out_param, 0,
 398                                       in_modifier, op_modifier, op,
 399                                       timeout, status);
 400 }
 401
 402 /* Invoke a command with no output parameter */
 403 static int mthca_cmd(struct mthca_dev *dev,
 404                      u64 in_param,
 405                      u32 in_modifier,
 406                      u8 op_modifier,
 407                      u16 op,
 408                      unsigned long timeout,
 409                      u8 *status)
 410 {
 411         return mthca_cmd_box(dev, in_param, 0, in_modifier,
 412                              op_modifier, op, timeout, status);
 413 }
 414
 415 /*
 416  * Invoke a command with an immediate output parameter (and copy the
 417  * output into the caller's out_param pointer after the command
 418  * executes).
 419  */
 420 static int mthca_cmd_imm(struct mthca_dev *dev,
 421                          u64 in_param,
 422                          u64 *out_param,
 423                          u32 in_modifier,
 424                          u8 op_modifier,
 425                          u16 op,
 426                          unsigned long timeout,
 427                          u8 *status)
 428 {
 429         if (dev->cmd.use_events)
 430                 return mthca_cmd_wait(dev, in_param, out_param, 1,
 431                                       in_modifier, op_modifier, op,
 432                                       timeout, status);
 433         else
 434                 return mthca_cmd_poll(dev, in_param, out_param, 1,
 435                                       in_modifier, op_modifier, op,
 436                                       timeout, status);
 437 }
 438
 439 int mthca_cmd_init(struct mthca_dev *dev)
 440 {
 441         sema_init(&dev->cmd.hcr_sem, 1);
 442         sema_init(&dev->cmd.poll_sem, 1);
 443         dev->cmd.use_events = 0;
 444
 445         dev->hcr = ioremap(pci_resource_start(dev->pdev, 0) + MTHCA_HCR_BASE,
 446                            MTHCA_HCR_SIZE);
 447         if (!dev->hcr) {
 448                 mthca_err(dev, "Couldn't map command register.");
 449                 return -ENOMEM;
 450         }
 451
 452         dev->cmd.pool = pci_pool_create("mthca_cmd", dev->pdev,
 453                                         MTHCA_MAILBOX_SIZE,
 454                                         MTHCA_MAILBOX_SIZE, 0);
 455         if (!dev->cmd.pool) {
 456                 iounmap(dev->hcr);
 457                 return -ENOMEM;
 458         }
 459
 460         return 0;
 461 }
 462
 463 void mthca_cmd_cleanup(struct mthca_dev *dev)
 464 {
 465         pci_pool_destroy(dev->cmd.pool);
 466         iounmap(dev->hcr);
 467 }
 468
 469 /*
 470  * Switch to using events to issue FW commands (should be called after
 471  * event queue to command events has been initialized).
 472  */
 473 int mthca_cmd_use_events(struct mthca_dev *dev)
 474 {
 475         int i;
 476
 477         dev->cmd.context = kmalloc(dev->cmd.max_cmds *
 478                                    sizeof (struct mthca_cmd_context),
 479                                    GFP_KERNEL);
 480         if (!dev->cmd.context)
 481                 return -ENOMEM;
 482
 483         for (i = 0; i < dev->cmd.max_cmds; ++i) {
 484                 dev->cmd.context[i].token = i;
 485                 dev->cmd.context[i].next = i + 1;
 486                 init_timer(&dev->cmd.context[i].timer);
 487                 dev->cmd.context[i].timer.data     =
 488                         (unsigned long) &dev->cmd.context[i];
 489                 dev->cmd.context[i].timer.function = event_timeout;
 490         }
 491
 492         dev->cmd.context[dev->cmd.max_cmds - 1].next = -1;
 493         dev->cmd.free_head = 0;
 494
 495         sema_init(&dev->cmd.event_sem, dev->cmd.max_cmds);
 496         spin_lock_init(&dev->cmd.context_lock);
 497
 498         for (dev->cmd.token_mask = 1;
 499              dev->cmd.token_mask < dev->cmd.max_cmds;
 500              dev->cmd.token_mask <<= 1)
 501                 ; /* nothing */
 502         --dev->cmd.token_mask;
 503
 504         dev->cmd.use_events = 1;
 505         down(&dev->cmd.poll_sem);
 506
 507         return 0;
 508 }
 509
 510 /*
 511  * Switch back to polling (used when shutting down the device)
 512  */
 513 void mthca_cmd_use_polling(struct mthca_dev *dev)
 514 {
 515         int i;
 516
 517         dev->cmd.use_events = 0;
 518
 519         for (i = 0; i < dev->cmd.max_cmds; ++i)
 520                 down(&dev->cmd.event_sem);
 521
 522         kfree(dev->cmd.context);
 523
 524         up(&dev->cmd.poll_sem);
 525 }
 526
 527 struct mthca_mailbox *mthca_alloc_mailbox(struct mthca_dev *dev,
 528                                           gfp_t gfp_mask)
 529 {
 530         struct mthca_mailbox *mailbox;
 531
 532         mailbox = kmalloc(sizeof *mailbox, gfp_mask);
 533         if (!mailbox)
 534                 return ERR_PTR(-ENOMEM);
 535
 536         mailbox->buf = pci_pool_alloc(dev->cmd.pool, gfp_mask, &mailbox->dma);
 537         if (!mailbox->buf) {
 538                 kfree(mailbox);
 539                 return ERR_PTR(-ENOMEM);
 540         }
 541
 542         return mailbox;
 543 }
 544
 545 void mthca_free_mailbox(struct mthca_dev *dev, struct mthca_mailbox *mailbox)
 546 {
 547         if (!mailbox)
 548                 return;
 549
 550         pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma);
 551         kfree(mailbox);
 552 }
 553
 554 int mthca_SYS_EN(struct mthca_dev *dev, u8 *status)
 555 {
 556         u64 out;
 557         int ret;
 558
 559         ret = mthca_cmd_imm(dev, 0, &out, 0, 0, CMD_SYS_EN, HZ, status);
 560
 561         if (*status == MTHCA_CMD_STAT_DDR_MEM_ERR)
 562                 mthca_warn(dev, "SYS_EN DDR error: syn=%x, sock=%d, "
 563                            "sladdr=%d, SPD source=%s\n",
 564                            (int) (out >> 6) & 0xf, (int) (out >> 4) & 3,
 565                            (int) (out >> 1) & 7, (int) out & 1 ? "NVMEM" : "DIMM");
 566
 567         return ret;
 568 }
 569
 570 int mthca_SYS_DIS(struct mthca_dev *dev, u8 *status)
 571 {
 572         return mthca_cmd(dev, 0, 0, 0, CMD_SYS_DIS, HZ, status);
 573 }
 574
 575 static int mthca_map_cmd(struct mthca_dev *dev, u16 op, struct mthca_icm *icm,
 576                          u64 virt, u8 *status)
 577 {
 578         struct mthca_mailbox *mailbox;
 579         struct mthca_icm_iter iter;
 580         __be64 *pages;
 581         int lg;
 582         int nent = 0;
 583         int i;
 584         int err = 0;
 585         int ts = 0, tc = 0;
 586
 587         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 588         if (IS_ERR(mailbox))
 589                 return PTR_ERR(mailbox);
 590         memset(mailbox->buf, 0, MTHCA_MAILBOX_SIZE);
 591         pages = mailbox->buf;
 592
 593         for (mthca_icm_first(icm, &iter);
 594              !mthca_icm_last(&iter);
 595              mthca_icm_next(&iter)) {
 596                 /*
 597                  * We have to pass pages that are aligned to their
 598                  * size, so find the least significant 1 in the
 599                  * address or size and use that as our log2 size.
 600                  */
 601                 lg = ffs(mthca_icm_addr(&iter) | mthca_icm_size(&iter)) - 1;
 602                 if (lg < 12) {
 603                         mthca_warn(dev, "Got FW area not aligned to 4K (%llx/%lx).\n",
 604                                    (unsigned long long) mthca_icm_addr(&iter),
 605                                    mthca_icm_size(&iter));
 606                         err = -EINVAL;
 607                         goto out;
 608                 }
 609                 for (i = 0; i < mthca_icm_size(&iter) / (1 << lg); ++i) {
 610                         if (virt != -1) {
 611                                 pages[nent * 2] = cpu_to_be64(virt);
 612                                 virt += 1 << lg;
 613                         }
 614
 615                         pages[nent * 2 + 1] = cpu_to_be64((mthca_icm_addr(&iter) +
 616                                                            (i << lg)) | (lg - 12));
 617                         ts += 1 << (lg - 10);
 618                         ++tc;
 619
 620                         if (++nent == MTHCA_MAILBOX_SIZE / 16) {
 621                                 err = mthca_cmd(dev, mailbox->dma, nent, 0, op,
 622                                                 CMD_TIME_CLASS_B, status);
 623                                 if (err || *status)
 624                                         goto out;
 625                                 nent = 0;
 626                         }
 627                 }
 628         }
 629
 630         if (nent)
 631                 err = mthca_cmd(dev, mailbox->dma, nent, 0, op,
 632                                 CMD_TIME_CLASS_B, status);
 633
 634         switch (op) {
 635         case CMD_MAP_FA:
 636                 mthca_dbg(dev, "Mapped %d chunks/%d KB for FW.\n", tc, ts);
 637                 break;
 638         case CMD_MAP_ICM_AUX:
 639                 mthca_dbg(dev, "Mapped %d chunks/%d KB for ICM aux.\n", tc, ts);
 640                 break;
 641         case CMD_MAP_ICM:
 642                 mthca_dbg(dev, "Mapped %d chunks/%d KB at %llx for ICM.\n",
 643                           tc, ts, (unsigned long long) virt - (ts << 10));
 644                 break;
 645         }
 646
 647 out:
 648         mthca_free_mailbox(dev, mailbox);
 649         return err;
 650 }
 651
 652 int mthca_MAP_FA(struct mthca_dev *dev, struct mthca_icm *icm, u8 *status)
 653 {
 654         return mthca_map_cmd(dev, CMD_MAP_FA, icm, -1, status);
 655 }
 656
 657 int mthca_UNMAP_FA(struct mthca_dev *dev, u8 *status)
 658 {
 659         return mthca_cmd(dev, 0, 0, 0, CMD_UNMAP_FA, CMD_TIME_CLASS_B, status);
 660 }
 661
 662 int mthca_RUN_FW(struct mthca_dev *dev, u8 *status)
 663 {
 664         return mthca_cmd(dev, 0, 0, 0, CMD_RUN_FW, CMD_TIME_CLASS_A, status);
 665 }
 666
 667 int mthca_QUERY_FW(struct mthca_dev *dev, u8 *status)
 668 {
 669         struct mthca_mailbox *mailbox;
 670         u32 *outbox;
 671         int err = 0;
 672         u8 lg;
 673
 674 #define QUERY_FW_OUT_SIZE             0x100
 675 #define QUERY_FW_VER_OFFSET            0x00
 676 #define QUERY_FW_MAX_CMD_OFFSET        0x0f
 677 #define QUERY_FW_ERR_START_OFFSET      0x30
 678 #define QUERY_FW_ERR_SIZE_OFFSET       0x38
 679
 680 #define QUERY_FW_START_OFFSET          0x20
 681 #define QUERY_FW_END_OFFSET            0x28
 682
 683 #define QUERY_FW_SIZE_OFFSET           0x00
 684 #define QUERY_FW_CLR_INT_BASE_OFFSET   0x20
 685 #define QUERY_FW_EQ_ARM_BASE_OFFSET    0x40
 686 #define QUERY_FW_EQ_SET_CI_BASE_OFFSET 0x48
 687
 688         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 689         if (IS_ERR(mailbox))
 690                 return PTR_ERR(mailbox);
 691         outbox = mailbox->buf;
 692
 693         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_FW,
 694                             CMD_TIME_CLASS_A, status);
 695
 696         if (err)
 697                 goto out;
 698
 699         MTHCA_GET(dev->fw_ver,   outbox, QUERY_FW_VER_OFFSET);
 700         /*
 701          * FW subminor version is at more signifant bits than minor
 702          * version, so swap here.
 703          */
 704         dev->fw_ver = (dev->fw_ver & 0xffff00000000ull) |
 705                 ((dev->fw_ver & 0xffff0000ull) >> 16) |
 706                 ((dev->fw_ver & 0x0000ffffull) << 16);
 707
 708         MTHCA_GET(lg, outbox, QUERY_FW_MAX_CMD_OFFSET);
 709         dev->cmd.max_cmds = 1 << lg;
 710         MTHCA_GET(dev->catas_err.addr, outbox, QUERY_FW_ERR_START_OFFSET);
 711         MTHCA_GET(dev->catas_err.size, outbox, QUERY_FW_ERR_SIZE_OFFSET);
 712
 713         mthca_dbg(dev, "FW version %012llx, max commands %d\n",
 714                   (unsigned long long) dev->fw_ver, dev->cmd.max_cmds);
 715         mthca_dbg(dev, "Catastrophic error buffer at 0x%llx, size 0x%x\n",
 716                   (unsigned long long) dev->catas_err.addr, dev->catas_err.size);
 717
 718         if (mthca_is_memfree(dev)) {
 719                 MTHCA_GET(dev->fw.arbel.fw_pages,       outbox, QUERY_FW_SIZE_OFFSET);
 720                 MTHCA_GET(dev->fw.arbel.clr_int_base,   outbox, QUERY_FW_CLR_INT_BASE_OFFSET);
 721                 MTHCA_GET(dev->fw.arbel.eq_arm_base,    outbox, QUERY_FW_EQ_ARM_BASE_OFFSET);
 722                 MTHCA_GET(dev->fw.arbel.eq_set_ci_base, outbox, QUERY_FW_EQ_SET_CI_BASE_OFFSET);
 723                 mthca_dbg(dev, "FW size %d KB\n", dev->fw.arbel.fw_pages << 2);
 724
 725                 /*
 726                  * Arbel page size is always 4 KB; round up number of
 727                  * system pages needed.
 728                  */
 729                 dev->fw.arbel.fw_pages =
 730                         (dev->fw.arbel.fw_pages + (1 << (PAGE_SHIFT - 12)) - 1) >>
 731                         (PAGE_SHIFT - 12);
 732
 733                 mthca_dbg(dev, "Clear int @ %llx, EQ arm @ %llx, EQ set CI @ %llx\n",
 734                           (unsigned long long) dev->fw.arbel.clr_int_base,
 735                           (unsigned long long) dev->fw.arbel.eq_arm_base,
 736                           (unsigned long long) dev->fw.arbel.eq_set_ci_base);
 737         } else {
 738                 MTHCA_GET(dev->fw.tavor.fw_start, outbox, QUERY_FW_START_OFFSET);
 739                 MTHCA_GET(dev->fw.tavor.fw_end,   outbox, QUERY_FW_END_OFFSET);
 740
 741                 mthca_dbg(dev, "FW size %d KB (start %llx, end %llx)\n",
 742                           (int) ((dev->fw.tavor.fw_end - dev->fw.tavor.fw_start) >> 10),
 743                           (unsigned long long) dev->fw.tavor.fw_start,
 744                           (unsigned long long) dev->fw.tavor.fw_end);
 745         }
 746
 747 out:
 748         mthca_free_mailbox(dev, mailbox);
 749         return err;
 750 }
 751
 752 int mthca_ENABLE_LAM(struct mthca_dev *dev, u8 *status)
 753 {
 754         struct mthca_mailbox *mailbox;
 755         u8 info;
 756         u32 *outbox;
 757         int err = 0;
 758
 759 #define ENABLE_LAM_OUT_SIZE         0x100
 760 #define ENABLE_LAM_START_OFFSET     0x00
 761 #define ENABLE_LAM_END_OFFSET       0x08
 762 #define ENABLE_LAM_INFO_OFFSET      0x13
 763
 764 #define ENABLE_LAM_INFO_HIDDEN_FLAG (1 << 4)
 765 #define ENABLE_LAM_INFO_ECC_MASK    0x3
 766
 767         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 768         if (IS_ERR(mailbox))
 769                 return PTR_ERR(mailbox);
 770         outbox = mailbox->buf;
 771
 772         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_ENABLE_LAM,
 773                             CMD_TIME_CLASS_C, status);
 774
 775         if (err)
 776                 goto out;
 777
 778         if (*status == MTHCA_CMD_STAT_LAM_NOT_PRE)
 779                 goto out;
 780
 781         MTHCA_GET(dev->ddr_start, outbox, ENABLE_LAM_START_OFFSET);
 782         MTHCA_GET(dev->ddr_end,   outbox, ENABLE_LAM_END_OFFSET);
 783         MTHCA_GET(info,           outbox, ENABLE_LAM_INFO_OFFSET);
 784
 785         if (!!(info & ENABLE_LAM_INFO_HIDDEN_FLAG) !=
 786             !!(dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) {
 787                 mthca_info(dev, "FW reports that HCA-attached memory "
 788                            "is %s hidden; does not match PCI config\n",
 789                            (info & ENABLE_LAM_INFO_HIDDEN_FLAG) ?
 790                            "" : "not");
 791         }
 792         if (info & ENABLE_LAM_INFO_HIDDEN_FLAG)
 793                 mthca_dbg(dev, "HCA-attached memory is hidden.\n");
 794
 795         mthca_dbg(dev, "HCA memory size %d KB (start %llx, end %llx)\n",
 796                   (int) ((dev->ddr_end - dev->ddr_start) >> 10),
 797                   (unsigned long long) dev->ddr_start,
 798                   (unsigned long long) dev->ddr_end);
 799
 800 out:
 801         mthca_free_mailbox(dev, mailbox);
 802         return err;
 803 }
 804
 805 int mthca_DISABLE_LAM(struct mthca_dev *dev, u8 *status)
 806 {
 807         return mthca_cmd(dev, 0, 0, 0, CMD_SYS_DIS, CMD_TIME_CLASS_C, status);
 808 }
 809
 810 int mthca_QUERY_DDR(struct mthca_dev *dev, u8 *status)
 811 {
 812         struct mthca_mailbox *mailbox;
 813         u8 info;
 814         u32 *outbox;
 815         int err = 0;
 816
 817 #define QUERY_DDR_OUT_SIZE         0x100
 818 #define QUERY_DDR_START_OFFSET     0x00
 819 #define QUERY_DDR_END_OFFSET       0x08
 820 #define QUERY_DDR_INFO_OFFSET      0x13
 821
 822 #define QUERY_DDR_INFO_HIDDEN_FLAG (1 << 4)
 823 #define QUERY_DDR_INFO_ECC_MASK    0x3
 824
 825         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 826         if (IS_ERR(mailbox))
 827                 return PTR_ERR(mailbox);
 828         outbox = mailbox->buf;
 829
 830         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_DDR,
 831                             CMD_TIME_CLASS_A, status);
 832
 833         if (err)
 834                 goto out;
 835
 836         MTHCA_GET(dev->ddr_start, outbox, QUERY_DDR_START_OFFSET);
 837         MTHCA_GET(dev->ddr_end,   outbox, QUERY_DDR_END_OFFSET);
 838         MTHCA_GET(info,           outbox, QUERY_DDR_INFO_OFFSET);
 839
 840         if (!!(info & QUERY_DDR_INFO_HIDDEN_FLAG) !=
 841             !!(dev->mthca_flags & MTHCA_FLAG_DDR_HIDDEN)) {
 842                 mthca_info(dev, "FW reports that HCA-attached memory "
 843                            "is %s hidden; does not match PCI config\n",
 844                            (info & QUERY_DDR_INFO_HIDDEN_FLAG) ?
 845                            "" : "not");
 846         }
 847         if (info & QUERY_DDR_INFO_HIDDEN_FLAG)
 848                 mthca_dbg(dev, "HCA-attached memory is hidden.\n");
 849
 850         mthca_dbg(dev, "HCA memory size %d KB (start %llx, end %llx)\n",
 851                   (int) ((dev->ddr_end - dev->ddr_start) >> 10),
 852                   (unsigned long long) dev->ddr_start,
 853                   (unsigned long long) dev->ddr_end);
 854
 855 out:
 856         mthca_free_mailbox(dev, mailbox);
 857         return err;
 858 }
 859
 860 int mthca_QUERY_DEV_LIM(struct mthca_dev *dev,
 861                         struct mthca_dev_lim *dev_lim, u8 *status)
 862 {
 863         struct mthca_mailbox *mailbox;
 864         u32 *outbox;
 865         u8 field;
 866         u16 size;
 867         int err;
 868
 869 #define QUERY_DEV_LIM_OUT_SIZE             0x100
 870 #define QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET     0x10
 871 #define QUERY_DEV_LIM_MAX_QP_SZ_OFFSET      0x11
 872 #define QUERY_DEV_LIM_RSVD_QP_OFFSET        0x12
 873 #define QUERY_DEV_LIM_MAX_QP_OFFSET         0x13
 874 #define QUERY_DEV_LIM_RSVD_SRQ_OFFSET       0x14
 875 #define QUERY_DEV_LIM_MAX_SRQ_OFFSET        0x15
 876 #define QUERY_DEV_LIM_RSVD_EEC_OFFSET       0x16
 877 #define QUERY_DEV_LIM_MAX_EEC_OFFSET        0x17
 878 #define QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET      0x19
 879 #define QUERY_DEV_LIM_RSVD_CQ_OFFSET        0x1a
 880 #define QUERY_DEV_LIM_MAX_CQ_OFFSET         0x1b
 881 #define QUERY_DEV_LIM_MAX_MPT_OFFSET        0x1d
 882 #define QUERY_DEV_LIM_RSVD_EQ_OFFSET        0x1e
 883 #define QUERY_DEV_LIM_MAX_EQ_OFFSET         0x1f
 884 #define QUERY_DEV_LIM_RSVD_MTT_OFFSET       0x20
 885 #define QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET     0x21
 886 #define QUERY_DEV_LIM_RSVD_MRW_OFFSET       0x22
 887 #define QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET    0x23
 888 #define QUERY_DEV_LIM_MAX_AV_OFFSET         0x27
 889 #define QUERY_DEV_LIM_MAX_REQ_QP_OFFSET     0x29
 890 #define QUERY_DEV_LIM_MAX_RES_QP_OFFSET     0x2b
 891 #define QUERY_DEV_LIM_MAX_RDMA_OFFSET       0x2f
 892 #define QUERY_DEV_LIM_RSZ_SRQ_OFFSET        0x33
 893 #define QUERY_DEV_LIM_ACK_DELAY_OFFSET      0x35
 894 #define QUERY_DEV_LIM_MTU_WIDTH_OFFSET      0x36
 895 #define QUERY_DEV_LIM_VL_PORT_OFFSET        0x37
 896 #define QUERY_DEV_LIM_MAX_GID_OFFSET        0x3b
 897 #define QUERY_DEV_LIM_MAX_PKEY_OFFSET       0x3f
 898 #define QUERY_DEV_LIM_FLAGS_OFFSET          0x44
 899 #define QUERY_DEV_LIM_RSVD_UAR_OFFSET       0x48
 900 #define QUERY_DEV_LIM_UAR_SZ_OFFSET         0x49
 901 #define QUERY_DEV_LIM_PAGE_SZ_OFFSET        0x4b
 902 #define QUERY_DEV_LIM_MAX_SG_OFFSET         0x51
 903 #define QUERY_DEV_LIM_MAX_DESC_SZ_OFFSET    0x52
 904 #define QUERY_DEV_LIM_MAX_SG_RQ_OFFSET      0x55
 905 #define QUERY_DEV_LIM_MAX_DESC_SZ_RQ_OFFSET 0x56
 906 #define QUERY_DEV_LIM_MAX_QP_MCG_OFFSET     0x61
 907 #define QUERY_DEV_LIM_RSVD_MCG_OFFSET       0x62
 908 #define QUERY_DEV_LIM_MAX_MCG_OFFSET        0x63
 909 #define QUERY_DEV_LIM_RSVD_PD_OFFSET        0x64
 910 #define QUERY_DEV_LIM_MAX_PD_OFFSET         0x65
 911 #define QUERY_DEV_LIM_RSVD_RDD_OFFSET       0x66
 912 #define QUERY_DEV_LIM_MAX_RDD_OFFSET        0x67
 913 #define QUERY_DEV_LIM_EEC_ENTRY_SZ_OFFSET   0x80
 914 #define QUERY_DEV_LIM_QPC_ENTRY_SZ_OFFSET   0x82
 915 #define QUERY_DEV_LIM_EEEC_ENTRY_SZ_OFFSET  0x84
 916 #define QUERY_DEV_LIM_EQPC_ENTRY_SZ_OFFSET  0x86
 917 #define QUERY_DEV_LIM_EQC_ENTRY_SZ_OFFSET   0x88
 918 #define QUERY_DEV_LIM_CQC_ENTRY_SZ_OFFSET   0x8a
 919 #define QUERY_DEV_LIM_SRQ_ENTRY_SZ_OFFSET   0x8c
 920 #define QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET   0x8e
 921 #define QUERY_DEV_LIM_MTT_ENTRY_SZ_OFFSET   0x90
 922 #define QUERY_DEV_LIM_MPT_ENTRY_SZ_OFFSET   0x92
 923 #define QUERY_DEV_LIM_PBL_SZ_OFFSET         0x96
 924 #define QUERY_DEV_LIM_BMME_FLAGS_OFFSET     0x97
 925 #define QUERY_DEV_LIM_RSVD_LKEY_OFFSET      0x98
 926 #define QUERY_DEV_LIM_LAMR_OFFSET           0x9f
 927 #define QUERY_DEV_LIM_MAX_ICM_SZ_OFFSET     0xa0
 928
 929         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 930         if (IS_ERR(mailbox))
 931                 return PTR_ERR(mailbox);
 932         outbox = mailbox->buf;
 933
 934         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_DEV_LIM,
 935                             CMD_TIME_CLASS_A, status);
 936
 937         if (err)
 938                 goto out;
 939
 940         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_QP_OFFSET);
 941         dev_lim->reserved_qps = 1 << (field & 0xf);
 942         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_OFFSET);
 943         dev_lim->max_qps = 1 << (field & 0x1f);
 944         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_SRQ_OFFSET);
 945         dev_lim->reserved_srqs = 1 << (field >> 4);
 946         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_OFFSET);
 947         dev_lim->max_srqs = 1 << (field & 0x1f);
 948         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EEC_OFFSET);
 949         dev_lim->reserved_eecs = 1 << (field & 0xf);
 950         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EEC_OFFSET);
 951         dev_lim->max_eecs = 1 << (field & 0x1f);
 952         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_SZ_OFFSET);
 953         dev_lim->max_cq_sz = 1 << field;
 954         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_CQ_OFFSET);
 955         dev_lim->reserved_cqs = 1 << (field & 0xf);
 956         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_CQ_OFFSET);
 957         dev_lim->max_cqs = 1 << (field & 0x1f);
 958         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MPT_OFFSET);
 959         dev_lim->max_mpts = 1 << (field & 0x3f);
 960         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_EQ_OFFSET);
 961         dev_lim->reserved_eqs = 1 << (field & 0xf);
 962         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_EQ_OFFSET);
 963         dev_lim->max_eqs = 1 << (field & 0x7);
 964         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MTT_OFFSET);
 965         dev_lim->reserved_mtts = 1 << (field >> 4);
 966         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MRW_SZ_OFFSET);
 967         dev_lim->max_mrw_sz = 1 << field;
 968         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MRW_OFFSET);
 969         dev_lim->reserved_mrws = 1 << (field & 0xf);
 970         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MTT_SEG_OFFSET);
 971         dev_lim->max_mtt_seg = 1 << (field & 0x3f);
 972         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_REQ_QP_OFFSET);
 973         dev_lim->max_requester_per_qp = 1 << (field & 0x3f);
 974         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RES_QP_OFFSET);
 975         dev_lim->max_responder_per_qp = 1 << (field & 0x3f);
 976         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RDMA_OFFSET);
 977         dev_lim->max_rdma_global = 1 << (field & 0x3f);
 978         MTHCA_GET(field, outbox, QUERY_DEV_LIM_ACK_DELAY_OFFSET);
 979         dev_lim->local_ca_ack_delay = field & 0x1f;
 980         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MTU_WIDTH_OFFSET);
 981         dev_lim->max_mtu        = field >> 4;
 982         dev_lim->max_port_width = field & 0xf;
 983         MTHCA_GET(field, outbox, QUERY_DEV_LIM_VL_PORT_OFFSET);
 984         dev_lim->max_vl    = field >> 4;
 985         dev_lim->num_ports = field & 0xf;
 986         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_GID_OFFSET);
 987         dev_lim->max_gids = 1 << (field & 0xf);
 988         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_PKEY_OFFSET);
 989         dev_lim->max_pkeys = 1 << (field & 0xf);
 990         MTHCA_GET(dev_lim->flags, outbox, QUERY_DEV_LIM_FLAGS_OFFSET);
 991         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_UAR_OFFSET);
 992         dev_lim->reserved_uars = field >> 4;
 993         MTHCA_GET(field, outbox, QUERY_DEV_LIM_UAR_SZ_OFFSET);
 994         dev_lim->uar_size = 1 << ((field & 0x3f) + 20);
 995         MTHCA_GET(field, outbox, QUERY_DEV_LIM_PAGE_SZ_OFFSET);
 996         dev_lim->min_page_sz = 1 << field;
 997         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SG_OFFSET);
 998         dev_lim->max_sg = field;
 999
1000         MTHCA_GET(size, outbox, QUERY_DEV_LIM_MAX_DESC_SZ_OFFSET);
1001         dev_lim->max_desc_sz = size;
1002
1003         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_MCG_OFFSET);
1004         dev_lim->max_qp_per_mcg = 1 << field;
1005         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_MCG_OFFSET);
1006         dev_lim->reserved_mgms = field & 0xf;
1007         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_MCG_OFFSET);
1008         dev_lim->max_mcgs = 1 << field;
1009         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_PD_OFFSET);
1010         dev_lim->reserved_pds = field >> 4;
1011         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_PD_OFFSET);
1012         dev_lim->max_pds = 1 << (field & 0x3f);
1013         MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSVD_RDD_OFFSET);
1014         dev_lim->reserved_rdds = field >> 4;
1015         MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_RDD_OFFSET);
1016         dev_lim->max_rdds = 1 << (field & 0x3f);
1017
1018         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EEC_ENTRY_SZ_OFFSET);
1019         dev_lim->eec_entry_sz = size;
1020         MTHCA_GET(size, outbox, QUERY_DEV_LIM_QPC_ENTRY_SZ_OFFSET);
1021         dev_lim->qpc_entry_sz = size;
1022         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EEEC_ENTRY_SZ_OFFSET);
1023         dev_lim->eeec_entry_sz = size;
1024         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EQPC_ENTRY_SZ_OFFSET);
1025         dev_lim->eqpc_entry_sz = size;
1026         MTHCA_GET(size, outbox, QUERY_DEV_LIM_EQC_ENTRY_SZ_OFFSET);
1027         dev_lim->eqc_entry_sz = size;
1028         MTHCA_GET(size, outbox, QUERY_DEV_LIM_CQC_ENTRY_SZ_OFFSET);
1029         dev_lim->cqc_entry_sz = size;
1030         MTHCA_GET(size, outbox, QUERY_DEV_LIM_SRQ_ENTRY_SZ_OFFSET);
1031         dev_lim->srq_entry_sz = size;
1032         MTHCA_GET(size, outbox, QUERY_DEV_LIM_UAR_ENTRY_SZ_OFFSET);
1033         dev_lim->uar_scratch_entry_sz = size;
1034
1035         mthca_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
1036                   dev_lim->max_qps, dev_lim->reserved_qps, dev_lim->qpc_entry_sz);
1037         mthca_dbg(dev, "Max SRQs: %d, reserved SRQs: %d, entry size: %d\n",
1038                   dev_lim->max_srqs, dev_lim->reserved_srqs, dev_lim->srq_entry_sz);
1039         mthca_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
1040                   dev_lim->max_cqs, dev_lim->reserved_cqs, dev_lim->cqc_entry_sz);
1041         mthca_dbg(dev, "Max EQs: %d, reserved EQs: %d, entry size: %d\n",
1042                   dev_lim->max_eqs, dev_lim->reserved_eqs, dev_lim->eqc_entry_sz);
1043         mthca_dbg(dev, "reserved MPTs: %d, reserved MTTs: %d\n",
1044                   dev_lim->reserved_mrws, dev_lim->reserved_mtts);
1045         mthca_dbg(dev, "Max PDs: %d, reserved PDs: %d, reserved UARs: %d\n",
1046                   dev_lim->max_pds, dev_lim->reserved_pds, dev_lim->reserved_uars);
1047         mthca_dbg(dev, "Max QP/MCG: %d, reserved MGMs: %d\n",
1048                   dev_lim->max_pds, dev_lim->reserved_mgms);
1049         mthca_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
1050                   dev_lim->max_cq_sz, dev_lim->max_qp_sz, dev_lim->max_srq_sz);
1051
1052         mthca_dbg(dev, "Flags: %08x\n", dev_lim->flags);
1053
1054         if (mthca_is_memfree(dev)) {
1055                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET);
1056                 dev_lim->max_srq_sz = 1 << field;
1057                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET);
1058                 dev_lim->max_qp_sz = 1 << field;
1059                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_RSZ_SRQ_OFFSET);
1060                 dev_lim->hca.arbel.resize_srq = field & 1;
1061                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SG_RQ_OFFSET);
1062                 dev_lim->max_sg = min_t(int, field, dev_lim->max_sg);
1063                 MTHCA_GET(size, outbox, QUERY_DEV_LIM_MAX_DESC_SZ_RQ_OFFSET);
1064                 dev_lim->max_desc_sz = min_t(int, size, dev_lim->max_desc_sz);
1065                 MTHCA_GET(size, outbox, QUERY_DEV_LIM_MPT_ENTRY_SZ_OFFSET);
1066                 dev_lim->mpt_entry_sz = size;
1067                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_PBL_SZ_OFFSET);
1068                 dev_lim->hca.arbel.max_pbl_sz = 1 << (field & 0x3f);
1069                 MTHCA_GET(dev_lim->hca.arbel.bmme_flags, outbox,
1070                           QUERY_DEV_LIM_BMME_FLAGS_OFFSET);
1071                 MTHCA_GET(dev_lim->hca.arbel.reserved_lkey, outbox,
1072                           QUERY_DEV_LIM_RSVD_LKEY_OFFSET);
1073                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_LAMR_OFFSET);
1074                 dev_lim->hca.arbel.lam_required = field & 1;
1075                 MTHCA_GET(dev_lim->hca.arbel.max_icm_sz, outbox,
1076                           QUERY_DEV_LIM_MAX_ICM_SZ_OFFSET);
1077
1078                 if (dev_lim->hca.arbel.bmme_flags & 1)
1079                         mthca_dbg(dev, "Base MM extensions: yes "
1080                                   "(flags %d, max PBL %d, rsvd L_Key %08x)\n",
1081                                   dev_lim->hca.arbel.bmme_flags,
1082                                   dev_lim->hca.arbel.max_pbl_sz,
1083                                   dev_lim->hca.arbel.reserved_lkey);
1084                 else
1085                         mthca_dbg(dev, "Base MM extensions: no\n");
1086
1087                 mthca_dbg(dev, "Max ICM size %lld MB\n",
1088                           (unsigned long long) dev_lim->hca.arbel.max_icm_sz >> 20);
1089         } else {
1090                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_SRQ_SZ_OFFSET);
1091                 dev_lim->max_srq_sz = (1 << field) - 1;
1092                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_QP_SZ_OFFSET);
1093                 dev_lim->max_qp_sz = (1 << field) - 1;
1094                 MTHCA_GET(field, outbox, QUERY_DEV_LIM_MAX_AV_OFFSET);
1095                 dev_lim->hca.tavor.max_avs = 1 << (field & 0x3f);
1096                 dev_lim->mpt_entry_sz = MTHCA_MPT_ENTRY_SIZE;
1097         }
1098
1099 out:
1100         mthca_free_mailbox(dev, mailbox);
1101         return err;
1102 }
1103
1104 static void get_board_id(void *vsd, char *board_id)
1105 {
1106         int i;
1107
1108 #define VSD_OFFSET_SIG1         0x00
1109 #define VSD_OFFSET_SIG2         0xde
1110 #define VSD_OFFSET_MLX_BOARD_ID 0xd0
1111 #define VSD_OFFSET_TS_BOARD_ID  0x20
1112
1113 #define VSD_SIGNATURE_TOPSPIN   0x5ad
1114
1115         memset(board_id, 0, MTHCA_BOARD_ID_LEN);
1116
1117         if (be16_to_cpup(vsd + VSD_OFFSET_SIG1) == VSD_SIGNATURE_TOPSPIN &&
1118             be16_to_cpup(vsd + VSD_OFFSET_SIG2) == VSD_SIGNATURE_TOPSPIN) {
1119                 strlcpy(board_id, vsd + VSD_OFFSET_TS_BOARD_ID, MTHCA_BOARD_ID_LEN);
1120         } else {
1121                 /*
1122                  * The board ID is a string but the firmware byte
1123                  * swaps each 4-byte word before passing it back to
1124                  * us.  Therefore we need to swab it before printing.
1125                  */
1126                 for (i = 0; i < 4; ++i)
1127                         ((u32 *) board_id)[i] =
1128                                 swab32(*(u32 *) (vsd + VSD_OFFSET_MLX_BOARD_ID + i * 4));
1129         }
1130 }
1131
1132 int mthca_QUERY_ADAPTER(struct mthca_dev *dev,
1133                         struct mthca_adapter *adapter, u8 *status)
1134 {
1135         struct mthca_mailbox *mailbox;
1136         u32 *outbox;
1137         int err;
1138
1139 #define QUERY_ADAPTER_OUT_SIZE             0x100
1140 #define QUERY_ADAPTER_VENDOR_ID_OFFSET     0x00
1141 #define QUERY_ADAPTER_DEVICE_ID_OFFSET     0x04
1142 #define QUERY_ADAPTER_REVISION_ID_OFFSET   0x08
1143 #define QUERY_ADAPTER_INTA_PIN_OFFSET      0x10
1144 #define QUERY_ADAPTER_VSD_OFFSET           0x20
1145
1146         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1147         if (IS_ERR(mailbox))
1148                 return PTR_ERR(mailbox);
1149         outbox = mailbox->buf;
1150
1151         err = mthca_cmd_box(dev, 0, mailbox->dma, 0, 0, CMD_QUERY_ADAPTER,
1152                             CMD_TIME_CLASS_A, status);
1153
1154         if (err)
1155                 goto out;
1156
1157         MTHCA_GET(adapter->vendor_id, outbox,   QUERY_ADAPTER_VENDOR_ID_OFFSET);
1158         MTHCA_GET(adapter->device_id, outbox,   QUERY_ADAPTER_DEVICE_ID_OFFSET);
1159         MTHCA_GET(adapter->revision_id, outbox, QUERY_ADAPTER_REVISION_ID_OFFSET);
1160         MTHCA_GET(adapter->inta_pin, outbox,    QUERY_ADAPTER_INTA_PIN_OFFSET);
1161
1162         get_board_id(outbox + QUERY_ADAPTER_VSD_OFFSET / 4,
1163                      adapter->board_id);
1164
1165 out:
1166         mthca_free_mailbox(dev, mailbox);
1167         return err;
1168 }
1169
1170 int mthca_INIT_HCA(struct mthca_dev *dev,
1171                    struct mthca_init_hca_param *param,
1172                    u8 *status)
1173 {
1174         struct mthca_mailbox *mailbox;
1175         __be32 *inbox;
1176         int err;
1177
1178 #define INIT_HCA_IN_SIZE                 0x200
1179 #define INIT_HCA_FLAGS_OFFSET            0x014
1180 #define INIT_HCA_QPC_OFFSET              0x020
1181 #define  INIT_HCA_QPC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x10)
1182 #define  INIT_HCA_LOG_QP_OFFSET          (INIT_HCA_QPC_OFFSET + 0x17)
1183 #define  INIT_HCA_EEC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x20)
1184 #define  INIT_HCA_LOG_EEC_OFFSET         (INIT_HCA_QPC_OFFSET + 0x27)
1185 #define  INIT_HCA_SRQC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x28)
1186 #define  INIT_HCA_LOG_SRQ_OFFSET         (INIT_HCA_QPC_OFFSET + 0x2f)
1187 #define  INIT_HCA_CQC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x30)
1188 #define  INIT_HCA_LOG_CQ_OFFSET          (INIT_HCA_QPC_OFFSET + 0x37)
1189 #define  INIT_HCA_EQPC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x40)
1190 #define  INIT_HCA_EEEC_BASE_OFFSET       (INIT_HCA_QPC_OFFSET + 0x50)
1191 #define  INIT_HCA_EQC_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x60)
1192 #define  INIT_HCA_LOG_EQ_OFFSET          (INIT_HCA_QPC_OFFSET + 0x67)
1193 #define  INIT_HCA_RDB_BASE_OFFSET        (INIT_HCA_QPC_OFFSET + 0x70)
1194 #define INIT_HCA_UDAV_OFFSET             0x0b0
1195 #define  INIT_HCA_UDAV_LKEY_OFFSET       (INIT_HCA_UDAV_OFFSET + 0x0)
1196 #define  INIT_HCA_UDAV_PD_OFFSET         (INIT_HCA_UDAV_OFFSET + 0x4)
1197 #define INIT_HCA_MCAST_OFFSET            0x0c0
1198 #define  INIT_HCA_MC_BASE_OFFSET         (INIT_HCA_MCAST_OFFSET + 0x00)
1199 #define  INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x12)
1200 #define  INIT_HCA_MC_HASH_SZ_OFFSET      (INIT_HCA_MCAST_OFFSET + 0x16)
1201 #define  INIT_HCA_LOG_MC_TABLE_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x1b)
1202 #define INIT_HCA_TPT_OFFSET              0x0f0
1203 #define  INIT_HCA_MPT_BASE_OFFSET        (INIT_HCA_TPT_OFFSET + 0x00)
1204 #define  INIT_HCA_MTT_SEG_SZ_OFFSET      (INIT_HCA_TPT_OFFSET + 0x09)
1205 #define  INIT_HCA_LOG_MPT_SZ_OFFSET      (INIT_HCA_TPT_OFFSET + 0x0b)
1206 #define  INIT_HCA_MTT_BASE_OFFSET        (INIT_HCA_TPT_OFFSET + 0x10)
1207 #define INIT_HCA_UAR_OFFSET              0x120
1208 #define  INIT_HCA_UAR_BASE_OFFSET        (INIT_HCA_UAR_OFFSET + 0x00)
1209 #define  INIT_HCA_UARC_SZ_OFFSET         (INIT_HCA_UAR_OFFSET + 0x09)
1210 #define  INIT_HCA_LOG_UAR_SZ_OFFSET      (INIT_HCA_UAR_OFFSET + 0x0a)
1211 #define  INIT_HCA_UAR_PAGE_SZ_OFFSET     (INIT_HCA_UAR_OFFSET + 0x0b)
1212 #define  INIT_HCA_UAR_SCATCH_BASE_OFFSET (INIT_HCA_UAR_OFFSET + 0x10)
1213 #define  INIT_HCA_UAR_CTX_BASE_OFFSET    (INIT_HCA_UAR_OFFSET + 0x18)
1214
1215         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1216         if (IS_ERR(mailbox))
1217                 return PTR_ERR(mailbox);
1218         inbox = mailbox->buf;
1219
1220         memset(inbox, 0, INIT_HCA_IN_SIZE);
1221
1222 #if defined(__LITTLE_ENDIAN)
1223         *(inbox + INIT_HCA_FLAGS_OFFSET / 4) &= ~cpu_to_be32(1 << 1);
1224 #elif defined(__BIG_ENDIAN)
1225         *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 1);
1226 #else
1227 #error Host endianness not defined
1228 #endif
1229         /* Check port for UD address vector: */
1230         *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1);
1231
1232         /* We leave wqe_quota, responder_exu, etc as 0 (default) */
1233
1234         /* QPC/EEC/CQC/EQC/RDB attributes */
1235
1236         MTHCA_PUT(inbox, param->qpc_base,     INIT_HCA_QPC_BASE_OFFSET);
1237         MTHCA_PUT(inbox, param->log_num_qps,  INIT_HCA_LOG_QP_OFFSET);
1238         MTHCA_PUT(inbox, param->eec_base,     INIT_HCA_EEC_BASE_OFFSET);
1239         MTHCA_PUT(inbox, param->log_num_eecs, INIT_HCA_LOG_EEC_OFFSET);
1240         MTHCA_PUT(inbox, param->srqc_base,    INIT_HCA_SRQC_BASE_OFFSET);
1241         MTHCA_PUT(inbox, param->log_num_srqs, INIT_HCA_LOG_SRQ_OFFSET);
1242         MTHCA_PUT(inbox, param->cqc_base,     INIT_HCA_CQC_BASE_OFFSET);
1243         MTHCA_PUT(inbox, param->log_num_cqs,  INIT_HCA_LOG_CQ_OFFSET);
1244         MTHCA_PUT(inbox, param->eqpc_base,    INIT_HCA_EQPC_BASE_OFFSET);
1245         MTHCA_PUT(inbox, param->eeec_base,    INIT_HCA_EEEC_BASE_OFFSET);
1246         MTHCA_PUT(inbox, param->eqc_base,     INIT_HCA_EQC_BASE_OFFSET);
1247         MTHCA_PUT(inbox, param->log_num_eqs,  INIT_HCA_LOG_EQ_OFFSET);
1248         MTHCA_PUT(inbox, param->rdb_base,     INIT_HCA_RDB_BASE_OFFSET);
1249
1250         /* UD AV attributes */
1251
1252         /* multicast attributes */
1253
1254         MTHCA_PUT(inbox, param->mc_base,         INIT_HCA_MC_BASE_OFFSET);
1255         MTHCA_PUT(inbox, param->log_mc_entry_sz, INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET);
1256         MTHCA_PUT(inbox, param->mc_hash_sz,      INIT_HCA_MC_HASH_SZ_OFFSET);
1257         MTHCA_PUT(inbox, param->log_mc_table_sz, INIT_HCA_LOG_MC_TABLE_SZ_OFFSET);
1258
1259         /* TPT attributes */
1260
1261         MTHCA_PUT(inbox, param->mpt_base,   INIT_HCA_MPT_BASE_OFFSET);
1262         if (!mthca_is_memfree(dev))
1263                 MTHCA_PUT(inbox, param->mtt_seg_sz, INIT_HCA_MTT_SEG_SZ_OFFSET);
1264         MTHCA_PUT(inbox, param->log_mpt_sz, INIT_HCA_LOG_MPT_SZ_OFFSET);
1265         MTHCA_PUT(inbox, param->mtt_base,   INIT_HCA_MTT_BASE_OFFSET);
1266
1267         /* UAR attributes */
1268         {
1269                 u8 uar_page_sz = PAGE_SHIFT - 12;
1270                 MTHCA_PUT(inbox, uar_page_sz, INIT_HCA_UAR_PAGE_SZ_OFFSET);
1271         }
1272
1273         MTHCA_PUT(inbox, param->uar_scratch_base, INIT_HCA_UAR_SCATCH_BASE_OFFSET);
1274
1275         if (mthca_is_memfree(dev)) {
1276                 MTHCA_PUT(inbox, param->log_uarc_sz, INIT_HCA_UARC_SZ_OFFSET);
1277                 MTHCA_PUT(inbox, param->log_uar_sz,  INIT_HCA_LOG_UAR_SZ_OFFSET);
1278                 MTHCA_PUT(inbox, param->uarc_base,   INIT_HCA_UAR_CTX_BASE_OFFSET);
1279         }
1280
1281         err = mthca_cmd(dev, mailbox->dma, 0, 0, CMD_INIT_HCA, HZ, status);
1282
1283         mthca_free_mailbox(dev, mailbox);
1284         return err;
1285 }
1286
1287 int mthca_INIT_IB(struct mthca_dev *dev,
1288                   struct mthca_init_ib_param *param,
1289                   int port, u8 *status)
1290 {
1291         struct mthca_mailbox *mailbox;
1292         u32 *inbox;
1293         int err;
1294         u32 flags;
1295
1296 #define INIT_IB_IN_SIZE          56
1297 #define INIT_IB_FLAGS_OFFSET     0x00
1298 #define INIT_IB_FLAG_SIG         (1 << 18)
1299 #define INIT_IB_FLAG_NG          (1 << 17)
1300 #define INIT_IB_FLAG_G0          (1 << 16)
1301 #define INIT_IB_VL_SHIFT         4
1302 #define INIT_IB_PORT_WIDTH_SHIFT 8
1303 #define INIT_IB_MTU_SHIFT        12
1304 #define INIT_IB_MAX_GID_OFFSET   0x06
1305 #define INIT_IB_MAX_PKEY_OFFSET  0x0a
1306 #define INIT_IB_GUID0_OFFSET     0x10
1307 #define INIT_IB_NODE_GUID_OFFSET 0x18
1308 #define INIT_IB_SI_GUID_OFFSET   0x20
1309
1310         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1311         if (IS_ERR(mailbox))
1312                 return PTR_ERR(mailbox);
1313         inbox = mailbox->buf;
1314
1315         memset(inbox, 0, INIT_IB_IN_SIZE);
1316
1317         flags = 0;
1318         flags |= param->set_guid0     ? INIT_IB_FLAG_G0  : 0;
1319         flags |= param->set_node_guid ? INIT_IB_FLAG_NG  : 0;
1320         flags |= param->set_si_guid   ? INIT_IB_FLAG_SIG : 0;
1321         flags |= param->vl_cap << INIT_IB_VL_SHIFT;
1322         flags |= param->port_width << INIT_IB_PORT_WIDTH_SHIFT;
1323         flags |= param->mtu_cap << INIT_IB_MTU_SHIFT;
1324         MTHCA_PUT(inbox, flags, INIT_IB_FLAGS_OFFSET);
1325
1326         MTHCA_PUT(inbox, param->gid_cap,   INIT_IB_MAX_GID_OFFSET);
1327         MTHCA_PUT(inbox, param->pkey_cap,  INIT_IB_MAX_PKEY_OFFSET);
1328         MTHCA_PUT(inbox, param->guid0,     INIT_IB_GUID0_OFFSET);
1329         MTHCA_PUT(inbox, param->node_guid, INIT_IB_NODE_GUID_OFFSET);
1330         MTHCA_PUT(inbox, param->si_guid,   INIT_IB_SI_GUID_OFFSET);
1331
1332         err = mthca_cmd(dev, mailbox->dma, port, 0, CMD_INIT_IB,
1333                         CMD_TIME_CLASS_A, status);
1334
1335         mthca_free_mailbox(dev, mailbox);
1336         return err;
1337 }
1338
1339 int mthca_CLOSE_IB(struct mthca_dev *dev, int port, u8 *status)
1340 {
1341         return mthca_cmd(dev, 0, port, 0, CMD_CLOSE_IB, HZ, status);
1342 }
1343
1344 int mthca_CLOSE_HCA(struct mthca_dev *dev, int panic, u8 *status)
1345 {
1346         return mthca_cmd(dev, 0, 0, panic, CMD_CLOSE_HCA, HZ, status);
1347 }
1348
1349 int mthca_SET_IB(struct mthca_dev *dev, struct mthca_set_ib_param *param,
1350                  int port, u8 *status)
1351 {
1352         struct mthca_mailbox *mailbox;
1353         u32 *inbox;
1354         int err;
1355         u32 flags = 0;
1356
1357 #define SET_IB_IN_SIZE         0x40
1358 #define SET_IB_FLAGS_OFFSET    0x00
1359 #define SET_IB_FLAG_SIG        (1 << 18)
1360 #define SET_IB_FLAG_RQK        (1 <<  0)
1361 #define SET_IB_CAP_MASK_OFFSET 0x04
1362 #define SET_IB_SI_GUID_OFFSET  0x08
1363
1364         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1365         if (IS_ERR(mailbox))
1366                 return PTR_ERR(mailbox);
1367         inbox = mailbox->buf;
1368
1369         memset(inbox, 0, SET_IB_IN_SIZE);
1370
1371         flags |= param->set_si_guid     ? SET_IB_FLAG_SIG : 0;
1372         flags |= param->reset_qkey_viol ? SET_IB_FLAG_RQK : 0;
1373         MTHCA_PUT(inbox, flags, SET_IB_FLAGS_OFFSET);
1374
1375         MTHCA_PUT(inbox, param->cap_mask, SET_IB_CAP_MASK_OFFSET);
1376         MTHCA_PUT(inbox, param->si_guid,  SET_IB_SI_GUID_OFFSET);
1377
1378         err = mthca_cmd(dev, mailbox->dma, port, 0, CMD_SET_IB,
1379                         CMD_TIME_CLASS_B, status);
1380
1381         mthca_free_mailbox(dev, mailbox);
1382         return err;
1383 }
1384
1385 int mthca_MAP_ICM(struct mthca_dev *dev, struct mthca_icm *icm, u64 virt, u8 *status)
1386 {
1387         return mthca_map_cmd(dev, CMD_MAP_ICM, icm, virt, status);
1388 }
1389
1390 int mthca_MAP_ICM_page(struct mthca_dev *dev, u64 dma_addr, u64 virt, u8 *status)
1391 {
1392         struct mthca_mailbox *mailbox;
1393         __be64 *inbox;
1394         int err;
1395
1396         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1397         if (IS_ERR(mailbox))
1398                 return PTR_ERR(mailbox);
1399         inbox = mailbox->buf;
1400
1401         inbox[0] = cpu_to_be64(virt);
1402         inbox[1] = cpu_to_be64(dma_addr);
1403
1404         err = mthca_cmd(dev, mailbox->dma, 1, 0, CMD_MAP_ICM,
1405                         CMD_TIME_CLASS_B, status);
1406
1407         mthca_free_mailbox(dev, mailbox);
1408
1409         if (!err)
1410                 mthca_dbg(dev, "Mapped page at %llx to %llx for ICM.\n",
1411                           (unsigned long long) dma_addr, (unsigned long long) virt);
1412
1413         return err;
1414 }
1415
1416 int mthca_UNMAP_ICM(struct mthca_dev *dev, u64 virt, u32 page_count, u8 *status)
1417 {
1418         mthca_dbg(dev, "Unmapping %d pages at %llx from ICM.\n",
1419                   page_count, (unsigned long long) virt);
1420
1421         return mthca_cmd(dev, virt, page_count, 0, CMD_UNMAP_ICM, CMD_TIME_CLASS_B, status);
1422 }
1423
1424 int mthca_MAP_ICM_AUX(struct mthca_dev *dev, struct mthca_icm *icm, u8 *status)
1425 {
1426         return mthca_map_cmd(dev, CMD_MAP_ICM_AUX, icm, -1, status);
1427 }
1428
1429 int mthca_UNMAP_ICM_AUX(struct mthca_dev *dev, u8 *status)
1430 {
1431         return mthca_cmd(dev, 0, 0, 0, CMD_UNMAP_ICM_AUX, CMD_TIME_CLASS_B, status);
1432 }
1433
1434 int mthca_SET_ICM_SIZE(struct mthca_dev *dev, u64 icm_size, u64 *aux_pages,
1435                        u8 *status)
1436 {
1437         int ret = mthca_cmd_imm(dev, icm_size, aux_pages, 0, 0, CMD_SET_ICM_SIZE,
1438                                 CMD_TIME_CLASS_A, status);
1439
1440         if (ret || status)
1441                 return ret;
1442
1443         /*
1444          * Arbel page size is always 4 KB; round up number of system
1445          * pages needed.
1446          */
1447         *aux_pages = (*aux_pages + (1 << (PAGE_SHIFT - 12)) - 1) >> (PAGE_SHIFT - 12);
1448
1449         return 0;
1450 }
1451
1452 int mthca_SW2HW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1453                     int mpt_index, u8 *status)
1454 {
1455         return mthca_cmd(dev, mailbox->dma, mpt_index, 0, CMD_SW2HW_MPT,
1456                          CMD_TIME_CLASS_B, status);
1457 }
1458
1459 int mthca_HW2SW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1460                     int mpt_index, u8 *status)
1461 {
1462         return mthca_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, mpt_index,
1463                              !mailbox, CMD_HW2SW_MPT,
1464                              CMD_TIME_CLASS_B, status);
1465 }
1466
1467 int mthca_WRITE_MTT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1468                     int num_mtt, u8 *status)
1469 {
1470         return mthca_cmd(dev, mailbox->dma, num_mtt, 0, CMD_WRITE_MTT,
1471                          CMD_TIME_CLASS_B, status);
1472 }
1473
1474 int mthca_SYNC_TPT(struct mthca_dev *dev, u8 *status)
1475 {
1476         return mthca_cmd(dev, 0, 0, 0, CMD_SYNC_TPT, CMD_TIME_CLASS_B, status);
1477 }
1478
1479 int mthca_MAP_EQ(struct mthca_dev *dev, u64 event_mask, int unmap,
1480                  int eq_num, u8 *status)
1481 {
1482         mthca_dbg(dev, "%s mask %016llx for eqn %d\n",
1483                   unmap ? "Clearing" : "Setting",
1484                   (unsigned long long) event_mask, eq_num);
1485         return mthca_cmd(dev, event_mask, (unmap << 31) | eq_num,
1486                          0, CMD_MAP_EQ, CMD_TIME_CLASS_B, status);
1487 }
1488
1489 int mthca_SW2HW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1490                    int eq_num, u8 *status)
1491 {
1492         return mthca_cmd(dev, mailbox->dma, eq_num, 0, CMD_SW2HW_EQ,
1493                          CMD_TIME_CLASS_A, status);
1494 }
1495
1496 int mthca_HW2SW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1497                    int eq_num, u8 *status)
1498 {
1499         return mthca_cmd_box(dev, 0, mailbox->dma, eq_num, 0,
1500                              CMD_HW2SW_EQ,
1501                              CMD_TIME_CLASS_A, status);
1502 }
1503
1504 int mthca_SW2HW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1505                    int cq_num, u8 *status)
1506 {
1507         return mthca_cmd(dev, mailbox->dma, cq_num, 0, CMD_SW2HW_CQ,
1508                         CMD_TIME_CLASS_A, status);
1509 }
1510
1511 int mthca_HW2SW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1512                    int cq_num, u8 *status)
1513 {
1514         return mthca_cmd_box(dev, 0, mailbox->dma, cq_num, 0,
1515                              CMD_HW2SW_CQ,
1516                              CMD_TIME_CLASS_A, status);
1517 }
1518
1519 int mthca_SW2HW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1520                     int srq_num, u8 *status)
1521 {
1522         return mthca_cmd(dev, mailbox->dma, srq_num, 0, CMD_SW2HW_SRQ,
1523                         CMD_TIME_CLASS_A, status);
1524 }
1525
1526 int mthca_HW2SW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1527                     int srq_num, u8 *status)
1528 {
1529         return mthca_cmd_box(dev, 0, mailbox->dma, srq_num, 0,
1530                              CMD_HW2SW_SRQ,
1531                              CMD_TIME_CLASS_A, status);
1532 }
1533
1534 int mthca_ARM_SRQ(struct mthca_dev *dev, int srq_num, int limit, u8 *status)
1535 {
1536         return mthca_cmd(dev, limit, srq_num, 0, CMD_ARM_SRQ,
1537                          CMD_TIME_CLASS_B, status);
1538 }
1539
1540 int mthca_MODIFY_QP(struct mthca_dev *dev, int trans, u32 num,
1541                     int is_ee, struct mthca_mailbox *mailbox, u32 optmask,
1542                     u8 *status)
1543 {
1544         static const u16 op[] = {
1545                 [MTHCA_TRANS_RST2INIT]  = CMD_RST2INIT_QPEE,
1546                 [MTHCA_TRANS_INIT2INIT] = CMD_INIT2INIT_QPEE,
1547                 [MTHCA_TRANS_INIT2RTR]  = CMD_INIT2RTR_QPEE,
1548                 [MTHCA_TRANS_RTR2RTS]   = CMD_RTR2RTS_QPEE,
1549                 [MTHCA_TRANS_RTS2RTS]   = CMD_RTS2RTS_QPEE,
1550                 [MTHCA_TRANS_SQERR2RTS] = CMD_SQERR2RTS_QPEE,
1551                 [MTHCA_TRANS_ANY2ERR]   = CMD_2ERR_QPEE,
1552                 [MTHCA_TRANS_RTS2SQD]   = CMD_RTS2SQD_QPEE,
1553                 [MTHCA_TRANS_SQD2SQD]   = CMD_SQD2SQD_QPEE,
1554                 [MTHCA_TRANS_SQD2RTS]   = CMD_SQD2RTS_QPEE,
1555                 [MTHCA_TRANS_ANY2RST]   = CMD_ERR2RST_QPEE
1556         };
1557         u8 op_mod = 0;
1558         int my_mailbox = 0;
1559         int err;
1560
1561         if (trans < 0 || trans >= ARRAY_SIZE(op))
1562                 return -EINVAL;
1563
1564         if (trans == MTHCA_TRANS_ANY2RST) {
1565                 op_mod = 3;     /* don't write outbox, any->reset */
1566
1567                 /* For debugging */
1568                 if (!mailbox) {
1569                         mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1570                         if (!IS_ERR(mailbox)) {
1571                                 my_mailbox = 1;
1572                                 op_mod     = 2; /* write outbox, any->reset */
1573                         } else
1574                                 mailbox = NULL;
1575                 }
1576         } else {
1577                 if (0) {
1578                         int i;
1579                         mthca_dbg(dev, "Dumping QP context:\n");
1580                         printk("  opt param mask: %08x\n", be32_to_cpup(mailbox->buf));
1581                         for (i = 0; i < 0x100 / 4; ++i) {
1582                                 if (i % 8 == 0)
1583                                         printk("  [%02x] ", i * 4);
1584                                 printk(" %08x",
1585                                        be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
1586                                 if ((i + 1) % 8 == 0)
1587                                         printk("\n");
1588                         }
1589                 }
1590         }
1591
1592         if (trans == MTHCA_TRANS_ANY2RST) {
1593                 err = mthca_cmd_box(dev, 0, mailbox ? mailbox->dma : 0,
1594                                     (!!is_ee << 24) | num, op_mod,
1595                                     op[trans], CMD_TIME_CLASS_C, status);
1596
1597                 if (0 && mailbox) {
1598                         int i;
1599                         mthca_dbg(dev, "Dumping QP context:\n");
1600                         printk(" %08x\n", be32_to_cpup(mailbox->buf));
1601                         for (i = 0; i < 0x100 / 4; ++i) {
1602                                 if (i % 8 == 0)
1603                                         printk("[%02x] ", i * 4);
1604                                 printk(" %08x",
1605                                        be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
1606                                 if ((i + 1) % 8 == 0)
1607                                         printk("\n");
1608                         }
1609                 }
1610
1611         } else
1612                 err = mthca_cmd(dev, mailbox->dma, (!!is_ee << 24) | num,
1613                                 op_mod, op[trans], CMD_TIME_CLASS_C, status);
1614
1615         if (my_mailbox)
1616                 mthca_free_mailbox(dev, mailbox);
1617
1618         return err;
1619 }
1620
1621 int mthca_QUERY_QP(struct mthca_dev *dev, u32 num, int is_ee,
1622                    struct mthca_mailbox *mailbox, u8 *status)
1623 {
1624         return mthca_cmd_box(dev, 0, mailbox->dma, (!!is_ee << 24) | num, 0,
1625                              CMD_QUERY_QPEE, CMD_TIME_CLASS_A, status);
1626 }
1627
1628 int mthca_CONF_SPECIAL_QP(struct mthca_dev *dev, int type, u32 qpn,
1629                           u8 *status)
1630 {
1631         u8 op_mod;
1632
1633         switch (type) {
1634         case IB_QPT_SMI:
1635                 op_mod = 0;
1636                 break;
1637         case IB_QPT_GSI:
1638                 op_mod = 1;
1639                 break;
1640         case IB_QPT_RAW_IPV6:
1641                 op_mod = 2;
1642                 break;
1643         case IB_QPT_RAW_ETY:
1644                 op_mod = 3;
1645                 break;
1646         default:
1647                 return -EINVAL;
1648         }
1649
1650         return mthca_cmd(dev, 0, qpn, op_mod, CMD_CONF_SPECIAL_QP,
1651                          CMD_TIME_CLASS_B, status);
1652 }
1653
1654 int mthca_MAD_IFC(struct mthca_dev *dev, int ignore_mkey, int ignore_bkey,
1655                   int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
1656                   void *in_mad, void *response_mad, u8 *status)
1657 {
1658         struct mthca_mailbox *inmailbox, *outmailbox;
1659         void *inbox;
1660         int err;
1661         u32 in_modifier = port;
1662         u8 op_modifier = 0;
1663
1664 #define MAD_IFC_BOX_SIZE      0x400
1665 #define MAD_IFC_MY_QPN_OFFSET 0x100
1666 #define MAD_IFC_RQPN_OFFSET   0x104
1667 #define MAD_IFC_SL_OFFSET     0x108
1668 #define MAD_IFC_G_PATH_OFFSET 0x109
1669 #define MAD_IFC_RLID_OFFSET   0x10a
1670 #define MAD_IFC_PKEY_OFFSET   0x10e
1671 #define MAD_IFC_GRH_OFFSET    0x140
1672
1673         inmailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1674         if (IS_ERR(inmailbox))
1675                 return PTR_ERR(inmailbox);
1676         inbox = inmailbox->buf;
1677
1678         outmailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
1679         if (IS_ERR(outmailbox)) {
1680                 mthca_free_mailbox(dev, inmailbox);
1681                 return PTR_ERR(outmailbox);
1682         }
1683
1684         memcpy(inbox, in_mad, 256);
1685
1686         /*
1687          * Key check traps can't be generated unless we have in_wc to
1688          * tell us where to send the trap.
1689          */
1690         if (ignore_mkey || !in_wc)
1691                 op_modifier |= 0x1;
1692         if (ignore_bkey || !in_wc)
1693                 op_modifier |= 0x2;
1694
1695         if (in_wc) {
1696                 u8 val;
1697
1698                 memset(inbox + 256, 0, 256);
1699
1700                 MTHCA_PUT(inbox, in_wc->qp_num,     MAD_IFC_MY_QPN_OFFSET);
1701                 MTHCA_PUT(inbox, in_wc->src_qp,     MAD_IFC_RQPN_OFFSET);
1702
1703                 val = in_wc->sl << 4;
1704                 MTHCA_PUT(inbox, val,               MAD_IFC_SL_OFFSET);
1705
1706                 val = in_wc->dlid_path_bits |
1707                         (in_wc->wc_flags & IB_WC_GRH ? 0x80 : 0);
1708                 MTHCA_PUT(inbox, val,               MAD_IFC_GRH_OFFSET);
1709
1710                 MTHCA_PUT(inbox, in_wc->slid,       MAD_IFC_RLID_OFFSET);
1711                 MTHCA_PUT(inbox, in_wc->pkey_index, MAD_IFC_PKEY_OFFSET);
1712
1713                 if (in_grh)
1714                         memcpy(inbox + MAD_IFC_GRH_OFFSET, in_grh, 40);
1715
1716                 op_modifier |= 0x10;
1717
1718                 in_modifier |= in_wc->slid << 16;
1719         }
1720
1721         err = mthca_cmd_box(dev, inmailbox->dma, outmailbox->dma,
1722                             in_modifier, op_modifier,
1723                             CMD_MAD_IFC, CMD_TIME_CLASS_C, status);
1724
1725         if (!err && !*status)
1726                 memcpy(response_mad, outmailbox->buf, 256);
1727
1728         mthca_free_mailbox(dev, inmailbox);
1729         mthca_free_mailbox(dev, outmailbox);
1730         return err;
1731 }
1732
1733 int mthca_READ_MGM(struct mthca_dev *dev, int index,
1734                    struct mthca_mailbox *mailbox, u8 *status)
1735 {
1736         return mthca_cmd_box(dev, 0, mailbox->dma, index, 0,
1737                              CMD_READ_MGM, CMD_TIME_CLASS_A, status);
1738 }
1739
1740 int mthca_WRITE_MGM(struct mthca_dev *dev, int index,
1741                     struct mthca_mailbox *mailbox, u8 *status)
1742 {
1743         return mthca_cmd(dev, mailbox->dma, index, 0, CMD_WRITE_MGM,
1744                          CMD_TIME_CLASS_A, status);
1745 }
1746
1747 int mthca_MGID_HASH(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
1748                     u16 *hash, u8 *status)
1749 {
1750         u64 imm;
1751         int err;
1752
1753         err = mthca_cmd_imm(dev, mailbox->dma, &imm, 0, 0, CMD_MGID_HASH,
1754                             CMD_TIME_CLASS_A, status);
1755
1756         *hash = imm;
1757         return err;
1758 }
1759
1760 int mthca_NOP(struct mthca_dev *dev, u8 *status)
1761 {
1762         return mthca_cmd(dev, 0, 0x1f, 0, CMD_NOP, msecs_to_jiffies(100), status);
1763 }