drivers/net/ethernet/mellanox/mlx4/cmd.c

   1 /*
   2  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved.
   4  * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc.  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/sched.h>
  36 #include <linux/slab.h>
  37 #include <linux/export.h>
  38 #include <linux/pci.h>
  39 #include <linux/errno.h>
  40
  41 #include <linux/mlx4/cmd.h>
  42 #include <linux/mlx4/device.h>
  43 #include <linux/semaphore.h>
  44 #include <rdma/ib_smi.h>
  45
  46 #include <asm/io.h>
  47
  48 #include "mlx4.h"
  49 #include "fw.h"
  50
  51 #define CMD_POLL_TOKEN 0xffff
  52 #define INBOX_MASK      0xffffffffffffff00ULL
  53
  54 #define CMD_CHAN_VER 1
  55 #define CMD_CHAN_IF_REV 1
  56
  57 enum {
  58         /* command completed successfully: */
  59         CMD_STAT_OK             = 0x00,
  60         /* Internal error (such as a bus error) occurred while processing command: */
  61         CMD_STAT_INTERNAL_ERR   = 0x01,
  62         /* Operation/command not supported or opcode modifier not supported: */
  63         CMD_STAT_BAD_OP         = 0x02,
  64         /* Parameter not supported or parameter out of range: */
  65         CMD_STAT_BAD_PARAM      = 0x03,
  66         /* System not enabled or bad system state: */
  67         CMD_STAT_BAD_SYS_STATE  = 0x04,
  68         /* Attempt to access reserved or unallocaterd resource: */
  69         CMD_STAT_BAD_RESOURCE   = 0x05,
  70         /* Requested resource is currently executing a command, or is otherwise busy: */
  71         CMD_STAT_RESOURCE_BUSY  = 0x06,
  72         /* Required capability exceeds device limits: */
  73         CMD_STAT_EXCEED_LIM     = 0x08,
  74         /* Resource is not in the appropriate state or ownership: */
  75         CMD_STAT_BAD_RES_STATE  = 0x09,
  76         /* Index out of range: */
  77         CMD_STAT_BAD_INDEX      = 0x0a,
  78         /* FW image corrupted: */
  79         CMD_STAT_BAD_NVMEM      = 0x0b,
  80         /* Error in ICM mapping (e.g. not enough auxiliary ICM pages to execute command): */
  81         CMD_STAT_ICM_ERROR      = 0x0c,
  82         /* Attempt to modify a QP/EE which is not in the presumed state: */
  83         CMD_STAT_BAD_QP_STATE   = 0x10,
  84         /* Bad segment parameters (Address/Size): */
  85         CMD_STAT_BAD_SEG_PARAM  = 0x20,
  86         /* Memory Region has Memory Windows bound to: */
  87         CMD_STAT_REG_BOUND      = 0x21,
  88         /* HCA local attached memory not present: */
  89         CMD_STAT_LAM_NOT_PRE    = 0x22,
  90         /* Bad management packet (silently discarded): */
  91         CMD_STAT_BAD_PKT        = 0x30,
  92         /* More outstanding CQEs in CQ than new CQ size: */
  93         CMD_STAT_BAD_SIZE       = 0x40,
  94         /* Multi Function device support required: */
  95         CMD_STAT_MULTI_FUNC_REQ = 0x50,
  96 };
  97
  98 enum {
  99         HCR_IN_PARAM_OFFSET     = 0x00,
 100         HCR_IN_MODIFIER_OFFSET  = 0x08,
 101         HCR_OUT_PARAM_OFFSET    = 0x0c,
 102         HCR_TOKEN_OFFSET        = 0x14,
 103         HCR_STATUS_OFFSET       = 0x18,
 104
 105         HCR_OPMOD_SHIFT         = 12,
 106         HCR_T_BIT               = 21,
 107         HCR_E_BIT               = 22,
 108         HCR_GO_BIT              = 23
 109 };
 110
 111 enum {
 112         GO_BIT_TIMEOUT_MSECS    = 10000
 113 };
 114
 115 enum mlx4_vlan_transition {
 116         MLX4_VLAN_TRANSITION_VST_VST = 0,
 117         MLX4_VLAN_TRANSITION_VST_VGT = 1,
 118         MLX4_VLAN_TRANSITION_VGT_VST = 2,
 119         MLX4_VLAN_TRANSITION_VGT_VGT = 3,
 120 };
 121
 122
 123 struct mlx4_cmd_context {
 124         struct completion       done;
 125         int                     result;
 126         int                     next;
 127         u64                     out_param;
 128         u16                     token;
 129         u8                      fw_status;
 130 };
 131
 132 static int mlx4_master_process_vhcr(struct mlx4_dev *dev, int slave,
 133                                     struct mlx4_vhcr_cmd *in_vhcr);
 134
 135 static int mlx4_status_to_errno(u8 status)
 136 {
 137         static const int trans_table[] = {
 138                 [CMD_STAT_INTERNAL_ERR]   = -EIO,
 139                 [CMD_STAT_BAD_OP]         = -EPERM,
 140                 [CMD_STAT_BAD_PARAM]      = -EINVAL,
 141                 [CMD_STAT_BAD_SYS_STATE]  = -ENXIO,
 142                 [CMD_STAT_BAD_RESOURCE]   = -EBADF,
 143                 [CMD_STAT_RESOURCE_BUSY]  = -EBUSY,
 144                 [CMD_STAT_EXCEED_LIM]     = -ENOMEM,
 145                 [CMD_STAT_BAD_RES_STATE]  = -EBADF,
 146                 [CMD_STAT_BAD_INDEX]      = -EBADF,
 147                 [CMD_STAT_BAD_NVMEM]      = -EFAULT,
 148                 [CMD_STAT_ICM_ERROR]      = -ENFILE,
 149                 [CMD_STAT_BAD_QP_STATE]   = -EINVAL,
 150                 [CMD_STAT_BAD_SEG_PARAM]  = -EFAULT,
 151                 [CMD_STAT_REG_BOUND]      = -EBUSY,
 152                 [CMD_STAT_LAM_NOT_PRE]    = -EAGAIN,
 153                 [CMD_STAT_BAD_PKT]        = -EINVAL,
 154                 [CMD_STAT_BAD_SIZE]       = -ENOMEM,
 155                 [CMD_STAT_MULTI_FUNC_REQ] = -EACCES,
 156         };
 157
 158         if (status >= ARRAY_SIZE(trans_table) ||
 159             (status != CMD_STAT_OK && trans_table[status] == 0))
 160                 return -EIO;
 161
 162         return trans_table[status];
 163 }
 164
 165 static u8 mlx4_errno_to_status(int errno)
 166 {
 167         switch (errno) {
 168         case -EPERM:
 169                 return CMD_STAT_BAD_OP;
 170         case -EINVAL:
 171                 return CMD_STAT_BAD_PARAM;
 172         case -ENXIO:
 173                 return CMD_STAT_BAD_SYS_STATE;
 174         case -EBUSY:
 175                 return CMD_STAT_RESOURCE_BUSY;
 176         case -ENOMEM:
 177                 return CMD_STAT_EXCEED_LIM;
 178         case -ENFILE:
 179                 return CMD_STAT_ICM_ERROR;
 180         default:
 181                 return CMD_STAT_INTERNAL_ERR;
 182         }
 183 }
 184
 185 static int comm_pending(struct mlx4_dev *dev)
 186 {
 187         struct mlx4_priv *priv = mlx4_priv(dev);
 188         u32 status = readl(&priv->mfunc.comm->slave_read);
 189
 190         return (swab32(status) >> 31) != priv->cmd.comm_toggle;
 191 }
 192
 193 static void mlx4_comm_cmd_post(struct mlx4_dev *dev, u8 cmd, u16 param)
 194 {
 195         struct mlx4_priv *priv = mlx4_priv(dev);
 196         u32 val;
 197
 198         priv->cmd.comm_toggle ^= 1;
 199         val = param | (cmd << 16) | (priv->cmd.comm_toggle << 31);
 200         __raw_writel((__force u32) cpu_to_be32(val),
 201                      &priv->mfunc.comm->slave_write);
 202         mmiowb();
 203 }
 204
 205 static int mlx4_comm_cmd_poll(struct mlx4_dev *dev, u8 cmd, u16 param,
 206                        unsigned long timeout)
 207 {
 208         struct mlx4_priv *priv = mlx4_priv(dev);
 209         unsigned long end;
 210         int err = 0;
 211         int ret_from_pending = 0;
 212
 213         /* First, verify that the master reports correct status */
 214         if (comm_pending(dev)) {
 215                 mlx4_warn(dev, "Communication channel is not idle - my toggle is %d (cmd:0x%x)\n",
 216                           priv->cmd.comm_toggle, cmd);
 217                 return -EAGAIN;
 218         }
 219
 220         /* Write command */
 221         down(&priv->cmd.poll_sem);
 222         mlx4_comm_cmd_post(dev, cmd, param);
 223
 224         end = msecs_to_jiffies(timeout) + jiffies;
 225         while (comm_pending(dev) && time_before(jiffies, end))
 226                 cond_resched();
 227         ret_from_pending = comm_pending(dev);
 228         if (ret_from_pending) {
 229                 /* check if the slave is trying to boot in the middle of
 230                  * FLR process. The only non-zero result in the RESET command
 231                  * is MLX4_DELAY_RESET_SLAVE*/
 232                 if ((MLX4_COMM_CMD_RESET == cmd)) {
 233                         err = MLX4_DELAY_RESET_SLAVE;
 234                 } else {
 235                         mlx4_warn(dev, "Communication channel timed out\n");
 236                         err = -ETIMEDOUT;
 237                 }
 238         }
 239
 240         up(&priv->cmd.poll_sem);
 241         return err;
 242 }
 243
 244 static int mlx4_comm_cmd_wait(struct mlx4_dev *dev, u8 op,
 245                               u16 param, unsigned long timeout)
 246 {
 247         struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
 248         struct mlx4_cmd_context *context;
 249         unsigned long end;
 250         int err = 0;
 251
 252         down(&cmd->event_sem);
 253
 254         spin_lock(&cmd->context_lock);
 255         BUG_ON(cmd->free_head < 0);
 256         context = &cmd->context[cmd->free_head];
 257         context->token += cmd->token_mask + 1;
 258         cmd->free_head = context->next;
 259         spin_unlock(&cmd->context_lock);
 260
 261         init_completion(&context->done);
 262
 263         mlx4_comm_cmd_post(dev, op, param);
 264
 265         if (!wait_for_completion_timeout(&context->done,
 266                                          msecs_to_jiffies(timeout))) {
 267                 mlx4_warn(dev, "communication channel command 0x%x timed out\n",
 268                           op);
 269                 err = -EBUSY;
 270                 goto out;
 271         }
 272
 273         err = context->result;
 274         if (err && context->fw_status != CMD_STAT_MULTI_FUNC_REQ) {
 275                 mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
 276                          op, context->fw_status);
 277                 goto out;
 278         }
 279
 280 out:
 281         /* wait for comm channel ready
 282          * this is necessary for prevention the race
 283          * when switching between event to polling mode
 284          */
 285         end = msecs_to_jiffies(timeout) + jiffies;
 286         while (comm_pending(dev) && time_before(jiffies, end))
 287                 cond_resched();
 288
 289         spin_lock(&cmd->context_lock);
 290         context->next = cmd->free_head;
 291         cmd->free_head = context - cmd->context;
 292         spin_unlock(&cmd->context_lock);
 293
 294         up(&cmd->event_sem);
 295         return err;
 296 }
 297
 298 int mlx4_comm_cmd(struct mlx4_dev *dev, u8 cmd, u16 param,
 299                   unsigned long timeout)
 300 {
 301         if (mlx4_priv(dev)->cmd.use_events)
 302                 return mlx4_comm_cmd_wait(dev, cmd, param, timeout);
 303         return mlx4_comm_cmd_poll(dev, cmd, param, timeout);
 304 }
 305
 306 static int cmd_pending(struct mlx4_dev *dev)
 307 {
 308         u32 status;
 309
 310         if (pci_channel_offline(dev->pdev))
 311                 return -EIO;
 312
 313         status = readl(mlx4_priv(dev)->cmd.hcr + HCR_STATUS_OFFSET);
 314
 315         return (status & swab32(1 << HCR_GO_BIT)) ||
 316                 (mlx4_priv(dev)->cmd.toggle ==
 317                  !!(status & swab32(1 << HCR_T_BIT)));
 318 }
 319
 320 static int mlx4_cmd_post(struct mlx4_dev *dev, u64 in_param, u64 out_param,
 321                          u32 in_modifier, u8 op_modifier, u16 op, u16 token,
 322                          int event)
 323 {
 324         struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
 325         u32 __iomem *hcr = cmd->hcr;
 326         int ret = -EAGAIN;
 327         unsigned long end;
 328
 329         mutex_lock(&cmd->hcr_mutex);
 330
 331         if (pci_channel_offline(dev->pdev)) {
 332                 /*
 333                  * Device is going through error recovery
 334                  * and cannot accept commands.
 335                  */
 336                 ret = -EIO;
 337                 goto out;
 338         }
 339
 340         end = jiffies;
 341         if (event)
 342                 end += msecs_to_jiffies(GO_BIT_TIMEOUT_MSECS);
 343
 344         while (cmd_pending(dev)) {
 345                 if (pci_channel_offline(dev->pdev)) {
 346                         /*
 347                          * Device is going through error recovery
 348                          * and cannot accept commands.
 349                          */
 350                         ret = -EIO;
 351                         goto out;
 352                 }
 353
 354                 if (time_after_eq(jiffies, end)) {
 355                         mlx4_err(dev, "%s:cmd_pending failed\n", __func__);
 356                         goto out;
 357                 }
 358                 cond_resched();
 359         }
 360
 361         /*
 362          * We use writel (instead of something like memcpy_toio)
 363          * because writes of less than 32 bits to the HCR don't work
 364          * (and some architectures such as ia64 implement memcpy_toio
 365          * in terms of writeb).
 366          */
 367         __raw_writel((__force u32) cpu_to_be32(in_param >> 32),           hcr + 0);
 368         __raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful),  hcr + 1);
 369         __raw_writel((__force u32) cpu_to_be32(in_modifier),              hcr + 2);
 370         __raw_writel((__force u32) cpu_to_be32(out_param >> 32),          hcr + 3);
 371         __raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), hcr + 4);
 372         __raw_writel((__force u32) cpu_to_be32(token << 16),              hcr + 5);
 373
 374         /* __raw_writel may not order writes. */
 375         wmb();
 376
 377         __raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT)                |
 378                                                (cmd->toggle << HCR_T_BIT)       |
 379                                                (event ? (1 << HCR_E_BIT) : 0)   |
 380                                                (op_modifier << HCR_OPMOD_SHIFT) |
 381                                                op), hcr + 6);
 382
 383         /*
 384          * Make sure that our HCR writes don't get mixed in with
 385          * writes from another CPU starting a FW command.
 386          */
 387         mmiowb();
 388
 389         cmd->toggle = cmd->toggle ^ 1;
 390
 391         ret = 0;
 392
 393 out:
 394         mutex_unlock(&cmd->hcr_mutex);
 395         return ret;
 396 }
 397
 398 static int mlx4_slave_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
 399                           int out_is_imm, u32 in_modifier, u8 op_modifier,
 400                           u16 op, unsigned long timeout)
 401 {
 402         struct mlx4_priv *priv = mlx4_priv(dev);
 403         struct mlx4_vhcr_cmd *vhcr = priv->mfunc.vhcr;
 404         int ret;
 405
 406         mutex_lock(&priv->cmd.slave_cmd_mutex);
 407
 408         vhcr->in_param = cpu_to_be64(in_param);
 409         vhcr->out_param = out_param ? cpu_to_be64(*out_param) : 0;
 410         vhcr->in_modifier = cpu_to_be32(in_modifier);
 411         vhcr->opcode = cpu_to_be16((((u16) op_modifier) << 12) | (op & 0xfff));
 412         vhcr->token = cpu_to_be16(CMD_POLL_TOKEN);
 413         vhcr->status = 0;
 414         vhcr->flags = !!(priv->cmd.use_events) << 6;
 415
 416         if (mlx4_is_master(dev)) {
 417                 ret = mlx4_master_process_vhcr(dev, dev->caps.function, vhcr);
 418                 if (!ret) {
 419                         if (out_is_imm) {
 420                                 if (out_param)
 421                                         *out_param =
 422                                                 be64_to_cpu(vhcr->out_param);
 423                                 else {
 424                                         mlx4_err(dev, "response expected while output mailbox is NULL for command 0x%x\n",
 425                                                  op);
 426                                         vhcr->status = CMD_STAT_BAD_PARAM;
 427                                 }
 428                         }
 429                         ret = mlx4_status_to_errno(vhcr->status);
 430                 }
 431         } else {
 432                 ret = mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_POST, 0,
 433                                     MLX4_COMM_TIME + timeout);
 434                 if (!ret) {
 435                         if (out_is_imm) {
 436                                 if (out_param)
 437                                         *out_param =
 438                                                 be64_to_cpu(vhcr->out_param);
 439                                 else {
 440                                         mlx4_err(dev, "response expected while output mailbox is NULL for command 0x%x\n",
 441                                                  op);
 442                                         vhcr->status = CMD_STAT_BAD_PARAM;
 443                                 }
 444                         }
 445                         ret = mlx4_status_to_errno(vhcr->status);
 446                 } else
 447                         mlx4_err(dev, "failed execution of VHCR_POST command opcode 0x%x\n",
 448                                  op);
 449         }
 450
 451         mutex_unlock(&priv->cmd.slave_cmd_mutex);
 452         return ret;
 453 }
 454
 455 static int mlx4_cmd_poll(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
 456                          int out_is_imm, u32 in_modifier, u8 op_modifier,
 457                          u16 op, unsigned long timeout)
 458 {
 459         struct mlx4_priv *priv = mlx4_priv(dev);
 460         void __iomem *hcr = priv->cmd.hcr;
 461         int err = 0;
 462         unsigned long end;
 463         u32 stat;
 464
 465         down(&priv->cmd.poll_sem);
 466
 467         if (pci_channel_offline(dev->pdev)) {
 468                 /*
 469                  * Device is going through error recovery
 470                  * and cannot accept commands.
 471                  */
 472                 err = -EIO;
 473                 goto out;
 474         }
 475
 476         if (out_is_imm && !out_param) {
 477                 mlx4_err(dev, "response expected while output mailbox is NULL for command 0x%x\n",
 478                          op);
 479                 err = -EINVAL;
 480                 goto out;
 481         }
 482
 483         err = mlx4_cmd_post(dev, in_param, out_param ? *out_param : 0,
 484                             in_modifier, op_modifier, op, CMD_POLL_TOKEN, 0);
 485         if (err)
 486                 goto out;
 487
 488         end = msecs_to_jiffies(timeout) + jiffies;
 489         while (cmd_pending(dev) && time_before(jiffies, end)) {
 490                 if (pci_channel_offline(dev->pdev)) {
 491                         /*
 492                          * Device is going through error recovery
 493                          * and cannot accept commands.
 494                          */
 495                         err = -EIO;
 496                         goto out;
 497                 }
 498
 499                 cond_resched();
 500         }
 501
 502         if (cmd_pending(dev)) {
 503                 mlx4_warn(dev, "command 0x%x timed out (go bit not cleared)\n",
 504                           op);
 505                 err = -ETIMEDOUT;
 506                 goto out;
 507         }
 508
 509         if (out_is_imm)
 510                 *out_param =
 511                         (u64) be32_to_cpu((__force __be32)
 512                                           __raw_readl(hcr + HCR_OUT_PARAM_OFFSET)) << 32 |
 513                         (u64) be32_to_cpu((__force __be32)
 514                                           __raw_readl(hcr + HCR_OUT_PARAM_OFFSET + 4));
 515         stat = be32_to_cpu((__force __be32)
 516                            __raw_readl(hcr + HCR_STATUS_OFFSET)) >> 24;
 517         err = mlx4_status_to_errno(stat);
 518         if (err)
 519                 mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
 520                          op, stat);
 521
 522 out:
 523         up(&priv->cmd.poll_sem);
 524         return err;
 525 }
 526
 527 void mlx4_cmd_event(struct mlx4_dev *dev, u16 token, u8 status, u64 out_param)
 528 {
 529         struct mlx4_priv *priv = mlx4_priv(dev);
 530         struct mlx4_cmd_context *context =
 531                 &priv->cmd.context[token & priv->cmd.token_mask];
 532
 533         /* previously timed out command completing at long last */
 534         if (token != context->token)
 535                 return;
 536
 537         context->fw_status = status;
 538         context->result    = mlx4_status_to_errno(status);
 539         context->out_param = out_param;
 540
 541         complete(&context->done);
 542 }
 543
 544 static int mlx4_cmd_wait(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
 545                          int out_is_imm, u32 in_modifier, u8 op_modifier,
 546                          u16 op, unsigned long timeout)
 547 {
 548         struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
 549         struct mlx4_cmd_context *context;
 550         int err = 0;
 551
 552         down(&cmd->event_sem);
 553
 554         spin_lock(&cmd->context_lock);
 555         BUG_ON(cmd->free_head < 0);
 556         context = &cmd->context[cmd->free_head];
 557         context->token += cmd->token_mask + 1;
 558         cmd->free_head = context->next;
 559         spin_unlock(&cmd->context_lock);
 560
 561         if (out_is_imm && !out_param) {
 562                 mlx4_err(dev, "response expected while output mailbox is NULL for command 0x%x\n",
 563                          op);
 564                 err = -EINVAL;
 565                 goto out;
 566         }
 567
 568         init_completion(&context->done);
 569
 570         mlx4_cmd_post(dev, in_param, out_param ? *out_param : 0,
 571                       in_modifier, op_modifier, op, context->token, 1);
 572
 573         if (!wait_for_completion_timeout(&context->done,
 574                                          msecs_to_jiffies(timeout))) {
 575                 mlx4_warn(dev, "command 0x%x timed out (go bit not cleared)\n",
 576                           op);
 577                 err = -EBUSY;
 578                 goto out;
 579         }
 580
 581         err = context->result;
 582         if (err) {
 583                 /* Since we do not want to have this error message always
 584                  * displayed at driver start when there are ConnectX2 HCAs
 585                  * on the host, we deprecate the error message for this
 586                  * specific command/input_mod/opcode_mod/fw-status to be debug.
 587                  */
 588                 if (op == MLX4_CMD_SET_PORT && in_modifier == 1 &&
 589                     op_modifier == 0 && context->fw_status == CMD_STAT_BAD_SIZE)
 590                         mlx4_dbg(dev, "command 0x%x failed: fw status = 0x%x\n",
 591                                  op, context->fw_status);
 592                 else
 593                         mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
 594                                  op, context->fw_status);
 595                 goto out;
 596         }
 597
 598         if (out_is_imm)
 599                 *out_param = context->out_param;
 600
 601 out:
 602         spin_lock(&cmd->context_lock);
 603         context->next = cmd->free_head;
 604         cmd->free_head = context - cmd->context;
 605         spin_unlock(&cmd->context_lock);
 606
 607         up(&cmd->event_sem);
 608         return err;
 609 }
 610
 611 int __mlx4_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
 612                int out_is_imm, u32 in_modifier, u8 op_modifier,
 613                u16 op, unsigned long timeout, int native)
 614 {
 615         if (pci_channel_offline(dev->pdev))
 616                 return -EIO;
 617
 618         if (!mlx4_is_mfunc(dev) || (native && mlx4_is_master(dev))) {
 619                 if (mlx4_priv(dev)->cmd.use_events)
 620                         return mlx4_cmd_wait(dev, in_param, out_param,
 621                                              out_is_imm, in_modifier,
 622                                              op_modifier, op, timeout);
 623                 else
 624                         return mlx4_cmd_poll(dev, in_param, out_param,
 625                                              out_is_imm, in_modifier,
 626                                              op_modifier, op, timeout);
 627         }
 628         return mlx4_slave_cmd(dev, in_param, out_param, out_is_imm,
 629                               in_modifier, op_modifier, op, timeout);
 630 }
 631 EXPORT_SYMBOL_GPL(__mlx4_cmd);
 632
 633
 634 static int mlx4_ARM_COMM_CHANNEL(struct mlx4_dev *dev)
 635 {
 636         return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_ARM_COMM_CHANNEL,
 637                         MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
 638 }
 639
 640 static int mlx4_ACCESS_MEM(struct mlx4_dev *dev, u64 master_addr,
 641                            int slave, u64 slave_addr,
 642                            int size, int is_read)
 643 {
 644         u64 in_param;
 645         u64 out_param;
 646
 647         if ((slave_addr & 0xfff) | (master_addr & 0xfff) |
 648             (slave & ~0x7f) | (size & 0xff)) {
 649                 mlx4_err(dev, "Bad access mem params - slave_addr:0x%llx master_addr:0x%llx slave_id:%d size:%d\n",
 650                          slave_addr, master_addr, slave, size);
 651                 return -EINVAL;
 652         }
 653
 654         if (is_read) {
 655                 in_param = (u64) slave | slave_addr;
 656                 out_param = (u64) dev->caps.function | master_addr;
 657         } else {
 658                 in_param = (u64) dev->caps.function | master_addr;
 659                 out_param = (u64) slave | slave_addr;
 660         }
 661
 662         return mlx4_cmd_imm(dev, in_param, &out_param, size, 0,
 663                             MLX4_CMD_ACCESS_MEM,
 664                             MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 665 }
 666
 667 static int query_pkey_block(struct mlx4_dev *dev, u8 port, u16 index, u16 *pkey,
 668                                struct mlx4_cmd_mailbox *inbox,
 669                                struct mlx4_cmd_mailbox *outbox)
 670 {
 671         struct ib_smp *in_mad = (struct ib_smp *)(inbox->buf);
 672         struct ib_smp *out_mad = (struct ib_smp *)(outbox->buf);
 673         int err;
 674         int i;
 675
 676         if (index & 0x1f)
 677                 return -EINVAL;
 678
 679         in_mad->attr_mod = cpu_to_be32(index / 32);
 680
 681         err = mlx4_cmd_box(dev, inbox->dma, outbox->dma, port, 3,
 682                            MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
 683                            MLX4_CMD_NATIVE);
 684         if (err)
 685                 return err;
 686
 687         for (i = 0; i < 32; ++i)
 688                 pkey[i] = be16_to_cpu(((__be16 *) out_mad->data)[i]);
 689
 690         return err;
 691 }
 692
 693 static int get_full_pkey_table(struct mlx4_dev *dev, u8 port, u16 *table,
 694                                struct mlx4_cmd_mailbox *inbox,
 695                                struct mlx4_cmd_mailbox *outbox)
 696 {
 697         int i;
 698         int err;
 699
 700         for (i = 0; i < dev->caps.pkey_table_len[port]; i += 32) {
 701                 err = query_pkey_block(dev, port, i, table + i, inbox, outbox);
 702                 if (err)
 703                         return err;
 704         }
 705
 706         return 0;
 707 }
 708 #define PORT_CAPABILITY_LOCATION_IN_SMP 20
 709 #define PORT_STATE_OFFSET 32
 710
 711 static enum ib_port_state vf_port_state(struct mlx4_dev *dev, int port, int vf)
 712 {
 713         if (mlx4_get_slave_port_state(dev, vf, port) == SLAVE_PORT_UP)
 714                 return IB_PORT_ACTIVE;
 715         else
 716                 return IB_PORT_DOWN;
 717 }
 718
 719 static int mlx4_MAD_IFC_wrapper(struct mlx4_dev *dev, int slave,
 720                                 struct mlx4_vhcr *vhcr,
 721                                 struct mlx4_cmd_mailbox *inbox,
 722                                 struct mlx4_cmd_mailbox *outbox,
 723                                 struct mlx4_cmd_info *cmd)
 724 {
 725         struct ib_smp *smp = inbox->buf;
 726         u32 index;
 727         u8 port;
 728         u8 opcode_modifier;
 729         u16 *table;
 730         int err;
 731         int vidx, pidx;
 732         int network_view;
 733         struct mlx4_priv *priv = mlx4_priv(dev);
 734         struct ib_smp *outsmp = outbox->buf;
 735         __be16 *outtab = (__be16 *)(outsmp->data);
 736         __be32 slave_cap_mask;
 737         __be64 slave_node_guid;
 738
 739         port = vhcr->in_modifier;
 740
 741         /* network-view bit is for driver use only, and should not be passed to FW */
 742         opcode_modifier = vhcr->op_modifier & ~0x8; /* clear netw view bit */
 743         network_view = !!(vhcr->op_modifier & 0x8);
 744
 745         if (smp->base_version == 1 &&
 746             smp->mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED &&
 747             smp->class_version == 1) {
 748                 /* host view is paravirtualized */
 749                 if (!network_view && smp->method == IB_MGMT_METHOD_GET) {
 750                         if (smp->attr_id == IB_SMP_ATTR_PKEY_TABLE) {
 751                                 index = be32_to_cpu(smp->attr_mod);
 752                                 if (port < 1 || port > dev->caps.num_ports)
 753                                         return -EINVAL;
 754                                 table = kcalloc(dev->caps.pkey_table_len[port], sizeof *table, GFP_KERNEL);
 755                                 if (!table)
 756                                         return -ENOMEM;
 757                                 /* need to get the full pkey table because the paravirtualized
 758                                  * pkeys may be scattered among several pkey blocks.
 759                                  */
 760                                 err = get_full_pkey_table(dev, port, table, inbox, outbox);
 761                                 if (!err) {
 762                                         for (vidx = index * 32; vidx < (index + 1) * 32; ++vidx) {
 763                                                 pidx = priv->virt2phys_pkey[slave][port - 1][vidx];
 764                                                 outtab[vidx % 32] = cpu_to_be16(table[pidx]);
 765                                         }
 766                                 }
 767                                 kfree(table);
 768                                 return err;
 769                         }
 770                         if (smp->attr_id == IB_SMP_ATTR_PORT_INFO) {
 771                                 /*get the slave specific caps:*/
 772                                 /*do the command */
 773                                 err = mlx4_cmd_box(dev, inbox->dma, outbox->dma,
 774                                             vhcr->in_modifier, opcode_modifier,
 775                                             vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
 776                                 /* modify the response for slaves */
 777                                 if (!err && slave != mlx4_master_func_num(dev)) {
 778                                         u8 *state = outsmp->data + PORT_STATE_OFFSET;
 779
 780                                         *state = (*state & 0xf0) | vf_port_state(dev, port, slave);
 781                                         slave_cap_mask = priv->mfunc.master.slave_state[slave].ib_cap_mask[port];
 782                                         memcpy(outsmp->data + PORT_CAPABILITY_LOCATION_IN_SMP, &slave_cap_mask, 4);
 783                                 }
 784                                 return err;
 785                         }
 786                         if (smp->attr_id == IB_SMP_ATTR_GUID_INFO) {
 787                                 /* compute slave's gid block */
 788                                 smp->attr_mod = cpu_to_be32(slave / 8);
 789                                 /* execute cmd */
 790                                 err = mlx4_cmd_box(dev, inbox->dma, outbox->dma,
 791                                              vhcr->in_modifier, opcode_modifier,
 792                                              vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
 793                                 if (!err) {
 794                                         /* if needed, move slave gid to index 0 */
 795                                         if (slave % 8)
 796                                                 memcpy(outsmp->data,
 797                                                        outsmp->data + (slave % 8) * 8, 8);
 798                                         /* delete all other gids */
 799                                         memset(outsmp->data + 8, 0, 56);
 800                                 }
 801                                 return err;
 802                         }
 803                         if (smp->attr_id == IB_SMP_ATTR_NODE_INFO) {
 804                                 err = mlx4_cmd_box(dev, inbox->dma, outbox->dma,
 805                                              vhcr->in_modifier, opcode_modifier,
 806                                              vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
 807                                 if (!err) {
 808                                         slave_node_guid =  mlx4_get_slave_node_guid(dev, slave);
 809                                         memcpy(outsmp->data + 12, &slave_node_guid, 8);
 810                                 }
 811                                 return err;
 812                         }
 813                 }
 814         }
 815
 816         /* Non-privileged VFs are only allowed "host" view LID-routed 'Get' MADs.
 817          * These are the MADs used by ib verbs (such as ib_query_gids).
 818          */
 819         if (slave != mlx4_master_func_num(dev) &&
 820             !mlx4_vf_smi_enabled(dev, slave, port)) {
 821                 if (!(smp->mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED &&
 822                       smp->method == IB_MGMT_METHOD_GET) || network_view) {
 823                         mlx4_err(dev, "Unprivileged slave %d is trying to execute a Subnet MGMT MAD, class 0x%x, method 0x%x, view=%s for attr 0x%x. Rejecting\n",
 824                                  slave, smp->method, smp->mgmt_class,
 825                                  network_view ? "Network" : "Host",
 826                                  be16_to_cpu(smp->attr_id));
 827                         return -EPERM;
 828                 }
 829         }
 830
 831         return mlx4_cmd_box(dev, inbox->dma, outbox->dma,
 832                                     vhcr->in_modifier, opcode_modifier,
 833                                     vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
 834 }
 835
 836 static int mlx4_CMD_EPERM_wrapper(struct mlx4_dev *dev, int slave,
 837                      struct mlx4_vhcr *vhcr,
 838                      struct mlx4_cmd_mailbox *inbox,
 839                      struct mlx4_cmd_mailbox *outbox,
 840                      struct mlx4_cmd_info *cmd)
 841 {
 842         return -EPERM;
 843 }
 844
 845 int mlx4_DMA_wrapper(struct mlx4_dev *dev, int slave,
 846                      struct mlx4_vhcr *vhcr,
 847                      struct mlx4_cmd_mailbox *inbox,
 848                      struct mlx4_cmd_mailbox *outbox,
 849                      struct mlx4_cmd_info *cmd)
 850 {
 851         u64 in_param;
 852         u64 out_param;
 853         int err;
 854
 855         in_param = cmd->has_inbox ? (u64) inbox->dma : vhcr->in_param;
 856         out_param = cmd->has_outbox ? (u64) outbox->dma : vhcr->out_param;
 857         if (cmd->encode_slave_id) {
 858                 in_param &= 0xffffffffffffff00ll;
 859                 in_param |= slave;
 860         }
 861
 862         err = __mlx4_cmd(dev, in_param, &out_param, cmd->out_is_imm,
 863                          vhcr->in_modifier, vhcr->op_modifier, vhcr->op,
 864                          MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 865
 866         if (cmd->out_is_imm)
 867                 vhcr->out_param = out_param;
 868
 869         return err;
 870 }
 871
 872 static struct mlx4_cmd_info cmd_info[] = {
 873         {
 874                 .opcode = MLX4_CMD_QUERY_FW,
 875                 .has_inbox = false,
 876                 .has_outbox = true,
 877                 .out_is_imm = false,
 878                 .encode_slave_id = false,
 879                 .verify = NULL,
 880                 .wrapper = mlx4_QUERY_FW_wrapper
 881         },
 882         {
 883                 .opcode = MLX4_CMD_QUERY_HCA,
 884                 .has_inbox = false,
 885                 .has_outbox = true,
 886                 .out_is_imm = false,
 887                 .encode_slave_id = false,
 888                 .verify = NULL,
 889                 .wrapper = NULL
 890         },
 891         {
 892                 .opcode = MLX4_CMD_QUERY_DEV_CAP,
 893                 .has_inbox = false,
 894                 .has_outbox = true,
 895                 .out_is_imm = false,
 896                 .encode_slave_id = false,
 897                 .verify = NULL,
 898                 .wrapper = mlx4_QUERY_DEV_CAP_wrapper
 899         },
 900         {
 901                 .opcode = MLX4_CMD_QUERY_FUNC_CAP,
 902                 .has_inbox = false,
 903                 .has_outbox = true,
 904                 .out_is_imm = false,
 905                 .encode_slave_id = false,
 906                 .verify = NULL,
 907                 .wrapper = mlx4_QUERY_FUNC_CAP_wrapper
 908         },
 909         {
 910                 .opcode = MLX4_CMD_QUERY_ADAPTER,
 911                 .has_inbox = false,
 912                 .has_outbox = true,
 913                 .out_is_imm = false,
 914                 .encode_slave_id = false,
 915                 .verify = NULL,
 916                 .wrapper = NULL
 917         },
 918         {
 919                 .opcode = MLX4_CMD_INIT_PORT,
 920                 .has_inbox = false,
 921                 .has_outbox = false,
 922                 .out_is_imm = false,
 923                 .encode_slave_id = false,
 924                 .verify = NULL,
 925                 .wrapper = mlx4_INIT_PORT_wrapper
 926         },
 927         {
 928                 .opcode = MLX4_CMD_CLOSE_PORT,
 929                 .has_inbox = false,
 930                 .has_outbox = false,
 931                 .out_is_imm  = false,
 932                 .encode_slave_id = false,
 933                 .verify = NULL,
 934                 .wrapper = mlx4_CLOSE_PORT_wrapper
 935         },
 936         {
 937                 .opcode = MLX4_CMD_QUERY_PORT,
 938                 .has_inbox = false,
 939                 .has_outbox = true,
 940                 .out_is_imm = false,
 941                 .encode_slave_id = false,
 942                 .verify = NULL,
 943                 .wrapper = mlx4_QUERY_PORT_wrapper
 944         },
 945         {
 946                 .opcode = MLX4_CMD_SET_PORT,
 947                 .has_inbox = true,
 948                 .has_outbox = false,
 949                 .out_is_imm = false,
 950                 .encode_slave_id = false,
 951                 .verify = NULL,
 952                 .wrapper = mlx4_SET_PORT_wrapper
 953         },
 954         {
 955                 .opcode = MLX4_CMD_MAP_EQ,
 956                 .has_inbox = false,
 957                 .has_outbox = false,
 958                 .out_is_imm = false,
 959                 .encode_slave_id = false,
 960                 .verify = NULL,
 961                 .wrapper = mlx4_MAP_EQ_wrapper
 962         },
 963         {
 964                 .opcode = MLX4_CMD_SW2HW_EQ,
 965                 .has_inbox = true,
 966                 .has_outbox = false,
 967                 .out_is_imm = false,
 968                 .encode_slave_id = true,
 969                 .verify = NULL,
 970                 .wrapper = mlx4_SW2HW_EQ_wrapper
 971         },
 972         {
 973                 .opcode = MLX4_CMD_HW_HEALTH_CHECK,
 974                 .has_inbox = false,
 975                 .has_outbox = false,
 976                 .out_is_imm = false,
 977                 .encode_slave_id = false,
 978                 .verify = NULL,
 979                 .wrapper = NULL
 980         },
 981         {
 982                 .opcode = MLX4_CMD_NOP,
 983                 .has_inbox = false,
 984                 .has_outbox = false,
 985                 .out_is_imm = false,
 986                 .encode_slave_id = false,
 987                 .verify = NULL,
 988                 .wrapper = NULL
 989         },
 990         {
 991                 .opcode = MLX4_CMD_CONFIG_DEV,
 992                 .has_inbox = false,
 993                 .has_outbox = true,
 994                 .out_is_imm = false,
 995                 .encode_slave_id = false,
 996                 .verify = NULL,
 997                 .wrapper = mlx4_CONFIG_DEV_wrapper
 998         },
 999         {
1000                 .opcode = MLX4_CMD_ALLOC_RES,
1001                 .has_inbox = false,
1002                 .has_outbox = false,
1003                 .out_is_imm = true,
1004                 .encode_slave_id = false,
1005                 .verify = NULL,
1006                 .wrapper = mlx4_ALLOC_RES_wrapper
1007         },
1008         {
1009                 .opcode = MLX4_CMD_FREE_RES,
1010                 .has_inbox = false,
1011                 .has_outbox = false,
1012                 .out_is_imm = false,
1013                 .encode_slave_id = false,
1014                 .verify = NULL,
1015                 .wrapper = mlx4_FREE_RES_wrapper
1016         },
1017         {
1018                 .opcode = MLX4_CMD_SW2HW_MPT,
1019                 .has_inbox = true,
1020                 .has_outbox = false,
1021                 .out_is_imm = false,
1022                 .encode_slave_id = true,
1023                 .verify = NULL,
1024                 .wrapper = mlx4_SW2HW_MPT_wrapper
1025         },
1026         {
1027                 .opcode = MLX4_CMD_QUERY_MPT,
1028                 .has_inbox = false,
1029                 .has_outbox = true,
1030                 .out_is_imm = false,
1031                 .encode_slave_id = false,
1032                 .verify = NULL,
1033                 .wrapper = mlx4_QUERY_MPT_wrapper
1034         },
1035         {
1036                 .opcode = MLX4_CMD_HW2SW_MPT,
1037                 .has_inbox = false,
1038                 .has_outbox = false,
1039                 .out_is_imm = false,
1040                 .encode_slave_id = false,
1041                 .verify = NULL,
1042                 .wrapper = mlx4_HW2SW_MPT_wrapper
1043         },
1044         {
1045                 .opcode = MLX4_CMD_READ_MTT,
1046                 .has_inbox = false,
1047                 .has_outbox = true,
1048                 .out_is_imm = false,
1049                 .encode_slave_id = false,
1050                 .verify = NULL,
1051                 .wrapper = NULL
1052         },
1053         {
1054                 .opcode = MLX4_CMD_WRITE_MTT,
1055                 .has_inbox = true,
1056                 .has_outbox = false,
1057                 .out_is_imm = false,
1058                 .encode_slave_id = false,
1059                 .verify = NULL,
1060                 .wrapper = mlx4_WRITE_MTT_wrapper
1061         },
1062         {
1063                 .opcode = MLX4_CMD_SYNC_TPT,
1064                 .has_inbox = true,
1065                 .has_outbox = false,
1066                 .out_is_imm = false,
1067                 .encode_slave_id = false,
1068                 .verify = NULL,
1069                 .wrapper = NULL
1070         },
1071         {
1072                 .opcode = MLX4_CMD_HW2SW_EQ,
1073                 .has_inbox = false,
1074                 .has_outbox = true,
1075                 .out_is_imm = false,
1076                 .encode_slave_id = true,
1077                 .verify = NULL,
1078                 .wrapper = mlx4_HW2SW_EQ_wrapper
1079         },
1080         {
1081                 .opcode = MLX4_CMD_QUERY_EQ,
1082                 .has_inbox = false,
1083                 .has_outbox = true,
1084                 .out_is_imm = false,
1085                 .encode_slave_id = true,
1086                 .verify = NULL,
1087                 .wrapper = mlx4_QUERY_EQ_wrapper
1088         },
1089         {
1090                 .opcode = MLX4_CMD_SW2HW_CQ,
1091                 .has_inbox = true,
1092                 .has_outbox = false,
1093                 .out_is_imm = false,
1094                 .encode_slave_id = true,
1095                 .verify = NULL,
1096                 .wrapper = mlx4_SW2HW_CQ_wrapper
1097         },
1098         {
1099                 .opcode = MLX4_CMD_HW2SW_CQ,
1100                 .has_inbox = false,
1101                 .has_outbox = false,
1102                 .out_is_imm = false,
1103                 .encode_slave_id = false,
1104                 .verify = NULL,
1105                 .wrapper = mlx4_HW2SW_CQ_wrapper
1106         },
1107         {
1108                 .opcode = MLX4_CMD_QUERY_CQ,
1109                 .has_inbox = false,
1110                 .has_outbox = true,
1111                 .out_is_imm = false,
1112                 .encode_slave_id = false,
1113                 .verify = NULL,
1114                 .wrapper = mlx4_QUERY_CQ_wrapper
1115         },
1116         {
1117                 .opcode = MLX4_CMD_MODIFY_CQ,
1118                 .has_inbox = true,
1119                 .has_outbox = false,
1120                 .out_is_imm = true,
1121                 .encode_slave_id = false,
1122                 .verify = NULL,
1123                 .wrapper = mlx4_MODIFY_CQ_wrapper
1124         },
1125         {
1126                 .opcode = MLX4_CMD_SW2HW_SRQ,
1127                 .has_inbox = true,
1128                 .has_outbox = false,
1129                 .out_is_imm = false,
1130                 .encode_slave_id = true,
1131                 .verify = NULL,
1132                 .wrapper = mlx4_SW2HW_SRQ_wrapper
1133         },
1134         {
1135                 .opcode = MLX4_CMD_HW2SW_SRQ,
1136                 .has_inbox = false,
1137                 .has_outbox = false,
1138                 .out_is_imm = false,
1139                 .encode_slave_id = false,
1140                 .verify = NULL,
1141                 .wrapper = mlx4_HW2SW_SRQ_wrapper
1142         },
1143         {
1144                 .opcode = MLX4_CMD_QUERY_SRQ,
1145                 .has_inbox = false,
1146                 .has_outbox = true,
1147                 .out_is_imm = false,
1148                 .encode_slave_id = false,
1149                 .verify = NULL,
1150                 .wrapper = mlx4_QUERY_SRQ_wrapper
1151         },
1152         {
1153                 .opcode = MLX4_CMD_ARM_SRQ,
1154                 .has_inbox = false,
1155                 .has_outbox = false,
1156                 .out_is_imm = false,
1157                 .encode_slave_id = false,
1158                 .verify = NULL,
1159                 .wrapper = mlx4_ARM_SRQ_wrapper
1160         },
1161         {
1162                 .opcode = MLX4_CMD_RST2INIT_QP,
1163                 .has_inbox = true,
1164                 .has_outbox = false,
1165                 .out_is_imm = false,
1166                 .encode_slave_id = true,
1167                 .verify = NULL,
1168                 .wrapper = mlx4_RST2INIT_QP_wrapper
1169         },
1170         {
1171                 .opcode = MLX4_CMD_INIT2INIT_QP,
1172                 .has_inbox = true,
1173                 .has_outbox = false,
1174                 .out_is_imm = false,
1175                 .encode_slave_id = false,
1176                 .verify = NULL,
1177                 .wrapper = mlx4_INIT2INIT_QP_wrapper
1178         },
1179         {
1180                 .opcode = MLX4_CMD_INIT2RTR_QP,
1181                 .has_inbox = true,
1182                 .has_outbox = false,
1183                 .out_is_imm = false,
1184                 .encode_slave_id = false,
1185                 .verify = NULL,
1186                 .wrapper = mlx4_INIT2RTR_QP_wrapper
1187         },
1188         {
1189                 .opcode = MLX4_CMD_RTR2RTS_QP,
1190                 .has_inbox = true,
1191                 .has_outbox = false,
1192                 .out_is_imm = false,
1193                 .encode_slave_id = false,
1194                 .verify = NULL,
1195                 .wrapper = mlx4_RTR2RTS_QP_wrapper
1196         },
1197         {
1198                 .opcode = MLX4_CMD_RTS2RTS_QP,
1199                 .has_inbox = true,
1200                 .has_outbox = false,
1201                 .out_is_imm = false,
1202                 .encode_slave_id = false,
1203                 .verify = NULL,
1204                 .wrapper = mlx4_RTS2RTS_QP_wrapper
1205         },
1206         {
1207                 .opcode = MLX4_CMD_SQERR2RTS_QP,
1208                 .has_inbox = true,
1209                 .has_outbox = false,
1210                 .out_is_imm = false,
1211                 .encode_slave_id = false,
1212                 .verify = NULL,
1213                 .wrapper = mlx4_SQERR2RTS_QP_wrapper
1214         },
1215         {
1216                 .opcode = MLX4_CMD_2ERR_QP,
1217                 .has_inbox = false,
1218                 .has_outbox = false,
1219                 .out_is_imm = false,
1220                 .encode_slave_id = false,
1221                 .verify = NULL,
1222                 .wrapper = mlx4_GEN_QP_wrapper
1223         },
1224         {
1225                 .opcode = MLX4_CMD_RTS2SQD_QP,
1226                 .has_inbox = false,
1227                 .has_outbox = false,
1228                 .out_is_imm = false,
1229                 .encode_slave_id = false,
1230                 .verify = NULL,
1231                 .wrapper = mlx4_GEN_QP_wrapper
1232         },
1233         {
1234                 .opcode = MLX4_CMD_SQD2SQD_QP,
1235                 .has_inbox = true,
1236                 .has_outbox = false,
1237                 .out_is_imm = false,
1238                 .encode_slave_id = false,
1239                 .verify = NULL,
1240                 .wrapper = mlx4_SQD2SQD_QP_wrapper
1241         },
1242         {
1243                 .opcode = MLX4_CMD_SQD2RTS_QP,
1244                 .has_inbox = true,
1245                 .has_outbox = false,
1246                 .out_is_imm = false,
1247                 .encode_slave_id = false,
1248                 .verify = NULL,
1249                 .wrapper = mlx4_SQD2RTS_QP_wrapper
1250         },
1251         {
1252                 .opcode = MLX4_CMD_2RST_QP,
1253                 .has_inbox = false,
1254                 .has_outbox = false,
1255                 .out_is_imm = false,
1256                 .encode_slave_id = false,
1257                 .verify = NULL,
1258                 .wrapper = mlx4_2RST_QP_wrapper
1259         },
1260         {
1261                 .opcode = MLX4_CMD_QUERY_QP,
1262                 .has_inbox = false,
1263                 .has_outbox = true,
1264                 .out_is_imm = false,
1265                 .encode_slave_id = false,
1266                 .verify = NULL,
1267                 .wrapper = mlx4_GEN_QP_wrapper
1268         },
1269         {
1270                 .opcode = MLX4_CMD_SUSPEND_QP,
1271                 .has_inbox = false,
1272                 .has_outbox = false,
1273                 .out_is_imm = false,
1274                 .encode_slave_id = false,
1275                 .verify = NULL,
1276                 .wrapper = mlx4_GEN_QP_wrapper
1277         },
1278         {
1279                 .opcode = MLX4_CMD_UNSUSPEND_QP,
1280                 .has_inbox = false,
1281                 .has_outbox = false,
1282                 .out_is_imm = false,
1283                 .encode_slave_id = false,
1284                 .verify = NULL,
1285                 .wrapper = mlx4_GEN_QP_wrapper
1286         },
1287         {
1288                 .opcode = MLX4_CMD_UPDATE_QP,
1289                 .has_inbox = true,
1290                 .has_outbox = false,
1291                 .out_is_imm = false,
1292                 .encode_slave_id = false,
1293                 .verify = NULL,
1294                 .wrapper = mlx4_UPDATE_QP_wrapper
1295         },
1296         {
1297                 .opcode = MLX4_CMD_GET_OP_REQ,
1298                 .has_inbox = false,
1299                 .has_outbox = false,
1300                 .out_is_imm = false,
1301                 .encode_slave_id = false,
1302                 .verify = NULL,
1303                 .wrapper = mlx4_CMD_EPERM_wrapper,
1304         },
1305         {
1306                 .opcode = MLX4_CMD_CONF_SPECIAL_QP,
1307                 .has_inbox = false,
1308                 .has_outbox = false,
1309                 .out_is_imm = false,
1310                 .encode_slave_id = false,
1311                 .verify = NULL, /* XXX verify: only demux can do this */
1312                 .wrapper = NULL
1313         },
1314         {
1315                 .opcode = MLX4_CMD_MAD_IFC,
1316                 .has_inbox = true,
1317                 .has_outbox = true,
1318                 .out_is_imm = false,
1319                 .encode_slave_id = false,
1320                 .verify = NULL,
1321                 .wrapper = mlx4_MAD_IFC_wrapper
1322         },
1323         {
1324                 .opcode = MLX4_CMD_MAD_DEMUX,
1325                 .has_inbox = false,
1326                 .has_outbox = false,
1327                 .out_is_imm = false,
1328                 .encode_slave_id = false,
1329                 .verify = NULL,
1330                 .wrapper = mlx4_CMD_EPERM_wrapper
1331         },
1332         {
1333                 .opcode = MLX4_CMD_QUERY_IF_STAT,
1334                 .has_inbox = false,
1335                 .has_outbox = true,
1336                 .out_is_imm = false,
1337                 .encode_slave_id = false,
1338                 .verify = NULL,
1339                 .wrapper = mlx4_QUERY_IF_STAT_wrapper
1340         },
1341         {
1342                 .opcode = MLX4_CMD_ACCESS_REG,
1343                 .has_inbox = true,
1344                 .has_outbox = true,
1345                 .out_is_imm = false,
1346                 .encode_slave_id = false,
1347                 .verify = NULL,
1348                 .wrapper = mlx4_ACCESS_REG_wrapper,
1349         },
1350         /* Native multicast commands are not available for guests */
1351         {
1352                 .opcode = MLX4_CMD_QP_ATTACH,
1353                 .has_inbox = true,
1354                 .has_outbox = false,
1355                 .out_is_imm = false,
1356                 .encode_slave_id = false,
1357                 .verify = NULL,
1358                 .wrapper = mlx4_QP_ATTACH_wrapper
1359         },
1360         {
1361                 .opcode = MLX4_CMD_PROMISC,
1362                 .has_inbox = false,
1363                 .has_outbox = false,
1364                 .out_is_imm = false,
1365                 .encode_slave_id = false,
1366                 .verify = NULL,
1367                 .wrapper = mlx4_PROMISC_wrapper
1368         },
1369         /* Ethernet specific commands */
1370         {
1371                 .opcode = MLX4_CMD_SET_VLAN_FLTR,
1372                 .has_inbox = true,
1373                 .has_outbox = false,
1374                 .out_is_imm = false,
1375                 .encode_slave_id = false,
1376                 .verify = NULL,
1377                 .wrapper = mlx4_SET_VLAN_FLTR_wrapper
1378         },
1379         {
1380                 .opcode = MLX4_CMD_SET_MCAST_FLTR,
1381                 .has_inbox = false,
1382                 .has_outbox = false,
1383                 .out_is_imm = false,
1384                 .encode_slave_id = false,
1385                 .verify = NULL,
1386                 .wrapper = mlx4_SET_MCAST_FLTR_wrapper
1387         },
1388         {
1389                 .opcode = MLX4_CMD_DUMP_ETH_STATS,
1390                 .has_inbox = false,
1391                 .has_outbox = true,
1392                 .out_is_imm = false,
1393                 .encode_slave_id = false,
1394                 .verify = NULL,
1395                 .wrapper = mlx4_DUMP_ETH_STATS_wrapper
1396         },
1397         {
1398                 .opcode = MLX4_CMD_INFORM_FLR_DONE,
1399                 .has_inbox = false,
1400                 .has_outbox = false,
1401                 .out_is_imm = false,
1402                 .encode_slave_id = false,
1403                 .verify = NULL,
1404                 .wrapper = NULL
1405         },
1406         /* flow steering commands */
1407         {
1408                 .opcode = MLX4_QP_FLOW_STEERING_ATTACH,
1409                 .has_inbox = true,
1410                 .has_outbox = false,
1411                 .out_is_imm = true,
1412                 .encode_slave_id = false,
1413                 .verify = NULL,
1414                 .wrapper = mlx4_QP_FLOW_STEERING_ATTACH_wrapper
1415         },
1416         {
1417                 .opcode = MLX4_QP_FLOW_STEERING_DETACH,
1418                 .has_inbox = false,
1419                 .has_outbox = false,
1420                 .out_is_imm = false,
1421                 .encode_slave_id = false,
1422                 .verify = NULL,
1423                 .wrapper = mlx4_QP_FLOW_STEERING_DETACH_wrapper
1424         },
1425         {
1426                 .opcode = MLX4_FLOW_STEERING_IB_UC_QP_RANGE,
1427                 .has_inbox = false,
1428                 .has_outbox = false,
1429                 .out_is_imm = false,
1430                 .encode_slave_id = false,
1431                 .verify = NULL,
1432                 .wrapper = mlx4_CMD_EPERM_wrapper
1433         },
1434 };
1435
1436 static int mlx4_master_process_vhcr(struct mlx4_dev *dev, int slave,
1437                                     struct mlx4_vhcr_cmd *in_vhcr)
1438 {
1439         struct mlx4_priv *priv = mlx4_priv(dev);
1440         struct mlx4_cmd_info *cmd = NULL;
1441         struct mlx4_vhcr_cmd *vhcr_cmd = in_vhcr ? in_vhcr : priv->mfunc.vhcr;
1442         struct mlx4_vhcr *vhcr;
1443         struct mlx4_cmd_mailbox *inbox = NULL;
1444         struct mlx4_cmd_mailbox *outbox = NULL;
1445         u64 in_param;
1446         u64 out_param;
1447         int ret = 0;
1448         int i;
1449         int err = 0;
1450
1451         /* Create sw representation of Virtual HCR */
1452         vhcr = kzalloc(sizeof(struct mlx4_vhcr), GFP_KERNEL);
1453         if (!vhcr)
1454                 return -ENOMEM;
1455
1456         /* DMA in the vHCR */
1457         if (!in_vhcr) {
1458                 ret = mlx4_ACCESS_MEM(dev, priv->mfunc.vhcr_dma, slave,
1459                                       priv->mfunc.master.slave_state[slave].vhcr_dma,
1460                                       ALIGN(sizeof(struct mlx4_vhcr_cmd),
1461                                             MLX4_ACCESS_MEM_ALIGN), 1);
1462                 if (ret) {
1463                         mlx4_err(dev, "%s: Failed reading vhcr ret: 0x%x\n",
1464                                  __func__, ret);
1465                         kfree(vhcr);
1466                         return ret;
1467                 }
1468         }
1469
1470         /* Fill SW VHCR fields */
1471         vhcr->in_param = be64_to_cpu(vhcr_cmd->in_param);
1472         vhcr->out_param = be64_to_cpu(vhcr_cmd->out_param);
1473         vhcr->in_modifier = be32_to_cpu(vhcr_cmd->in_modifier);
1474         vhcr->token = be16_to_cpu(vhcr_cmd->token);
1475         vhcr->op = be16_to_cpu(vhcr_cmd->opcode) & 0xfff;
1476         vhcr->op_modifier = (u8) (be16_to_cpu(vhcr_cmd->opcode) >> 12);
1477         vhcr->e_bit = vhcr_cmd->flags & (1 << 6);
1478
1479         /* Lookup command */
1480         for (i = 0; i < ARRAY_SIZE(cmd_info); ++i) {
1481                 if (vhcr->op == cmd_info[i].opcode) {
1482                         cmd = &cmd_info[i];
1483                         break;
1484                 }
1485         }
1486         if (!cmd) {
1487                 mlx4_err(dev, "Unknown command:0x%x accepted from slave:%d\n",
1488                          vhcr->op, slave);
1489                 vhcr_cmd->status = CMD_STAT_BAD_PARAM;
1490                 goto out_status;
1491         }
1492
1493         /* Read inbox */
1494         if (cmd->has_inbox) {
1495                 vhcr->in_param &= INBOX_MASK;
1496                 inbox = mlx4_alloc_cmd_mailbox(dev);
1497                 if (IS_ERR(inbox)) {
1498                         vhcr_cmd->status = CMD_STAT_BAD_SIZE;
1499                         inbox = NULL;
1500                         goto out_status;
1501                 }
1502
1503                 if (mlx4_ACCESS_MEM(dev, inbox->dma, slave,
1504                                     vhcr->in_param,
1505                                     MLX4_MAILBOX_SIZE, 1)) {
1506                         mlx4_err(dev, "%s: Failed reading inbox (cmd:0x%x)\n",
1507                                  __func__, cmd->opcode);
1508                         vhcr_cmd->status = CMD_STAT_INTERNAL_ERR;
1509                         goto out_status;
1510                 }
1511         }
1512
1513         /* Apply permission and bound checks if applicable */
1514         if (cmd->verify && cmd->verify(dev, slave, vhcr, inbox)) {
1515                 mlx4_warn(dev, "Command:0x%x from slave: %d failed protection checks for resource_id:%d\n",
1516                           vhcr->op, slave, vhcr->in_modifier);
1517                 vhcr_cmd->status = CMD_STAT_BAD_OP;
1518                 goto out_status;
1519         }
1520
1521         /* Allocate outbox */
1522         if (cmd->has_outbox) {
1523                 outbox = mlx4_alloc_cmd_mailbox(dev);
1524                 if (IS_ERR(outbox)) {
1525                         vhcr_cmd->status = CMD_STAT_BAD_SIZE;
1526                         outbox = NULL;
1527                         goto out_status;
1528                 }
1529         }
1530
1531         /* Execute the command! */
1532         if (cmd->wrapper) {
1533                 err = cmd->wrapper(dev, slave, vhcr, inbox, outbox,
1534                                    cmd);
1535                 if (cmd->out_is_imm)
1536                         vhcr_cmd->out_param = cpu_to_be64(vhcr->out_param);
1537         } else {
1538                 in_param = cmd->has_inbox ? (u64) inbox->dma :
1539                         vhcr->in_param;
1540                 out_param = cmd->has_outbox ? (u64) outbox->dma :
1541                         vhcr->out_param;
1542                 err = __mlx4_cmd(dev, in_param, &out_param,
1543                                  cmd->out_is_imm, vhcr->in_modifier,
1544                                  vhcr->op_modifier, vhcr->op,
1545                                  MLX4_CMD_TIME_CLASS_A,
1546                                  MLX4_CMD_NATIVE);
1547
1548                 if (cmd->out_is_imm) {
1549                         vhcr->out_param = out_param;
1550                         vhcr_cmd->out_param = cpu_to_be64(vhcr->out_param);
1551                 }
1552         }
1553
1554         if (err) {
1555                 mlx4_warn(dev, "vhcr command:0x%x slave:%d failed with error:%d, status %d\n",
1556                           vhcr->op, slave, vhcr->errno, err);
1557                 vhcr_cmd->status = mlx4_errno_to_status(err);
1558                 goto out_status;
1559         }
1560
1561
1562         /* Write outbox if command completed successfully */
1563         if (cmd->has_outbox && !vhcr_cmd->status) {
1564                 ret = mlx4_ACCESS_MEM(dev, outbox->dma, slave,
1565                                       vhcr->out_param,
1566                                       MLX4_MAILBOX_SIZE, MLX4_CMD_WRAPPED);
1567                 if (ret) {
1568                         /* If we failed to write back the outbox after the
1569                          *command was successfully executed, we must fail this
1570                          * slave, as it is now in undefined state */
1571                         mlx4_err(dev, "%s:Failed writing outbox\n", __func__);
1572                         goto out;
1573                 }
1574         }
1575
1576 out_status:
1577         /* DMA back vhcr result */
1578         if (!in_vhcr) {
1579                 ret = mlx4_ACCESS_MEM(dev, priv->mfunc.vhcr_dma, slave,
1580                                       priv->mfunc.master.slave_state[slave].vhcr_dma,
1581                                       ALIGN(sizeof(struct mlx4_vhcr),
1582                                             MLX4_ACCESS_MEM_ALIGN),
1583                                       MLX4_CMD_WRAPPED);
1584                 if (ret)
1585                         mlx4_err(dev, "%s:Failed writing vhcr result\n",
1586                                  __func__);
1587                 else if (vhcr->e_bit &&
1588                          mlx4_GEN_EQE(dev, slave, &priv->mfunc.master.cmd_eqe))
1589                                 mlx4_warn(dev, "Failed to generate command completion eqe for slave %d\n",
1590                                           slave);
1591         }
1592
1593 out:
1594         kfree(vhcr);
1595         mlx4_free_cmd_mailbox(dev, inbox);
1596         mlx4_free_cmd_mailbox(dev, outbox);
1597         return ret;
1598 }
1599
1600 static int mlx4_master_immediate_activate_vlan_qos(struct mlx4_priv *priv,
1601                                             int slave, int port)
1602 {
1603         struct mlx4_vport_oper_state *vp_oper;
1604         struct mlx4_vport_state *vp_admin;
1605         struct mlx4_vf_immed_vlan_work *work;
1606         struct mlx4_dev *dev = &(priv->dev);
1607         int err;
1608         int admin_vlan_ix = NO_INDX;
1609
1610         vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
1611         vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
1612
1613         if (vp_oper->state.default_vlan == vp_admin->default_vlan &&
1614             vp_oper->state.default_qos == vp_admin->default_qos &&
1615             vp_oper->state.link_state == vp_admin->link_state)
1616                 return 0;
1617
1618         if (!(priv->mfunc.master.slave_state[slave].active &&
1619               dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_UPDATE_QP)) {
1620                 /* even if the UPDATE_QP command isn't supported, we still want
1621                  * to set this VF link according to the admin directive
1622                  */
1623                 vp_oper->state.link_state = vp_admin->link_state;
1624                 return -1;
1625         }
1626
1627         mlx4_dbg(dev, "updating immediately admin params slave %d port %d\n",
1628                  slave, port);
1629         mlx4_dbg(dev, "vlan %d QoS %d link down %d\n",
1630                  vp_admin->default_vlan, vp_admin->default_qos,
1631                  vp_admin->link_state);
1632
1633         work = kzalloc(sizeof(*work), GFP_KERNEL);
1634         if (!work)
1635                 return -ENOMEM;
1636
1637         if (vp_oper->state.default_vlan != vp_admin->default_vlan) {
1638                 if (MLX4_VGT != vp_admin->default_vlan) {
1639                         err = __mlx4_register_vlan(&priv->dev, port,
1640                                                    vp_admin->default_vlan,
1641                                                    &admin_vlan_ix);
1642                         if (err) {
1643                                 kfree(work);
1644                                 mlx4_warn(&priv->dev,
1645                                           "No vlan resources slave %d, port %d\n",
1646                                           slave, port);
1647                                 return err;
1648                         }
1649                 } else {
1650                         admin_vlan_ix = NO_INDX;
1651                 }
1652                 work->flags |= MLX4_VF_IMMED_VLAN_FLAG_VLAN;
1653                 mlx4_dbg(&priv->dev,
1654                          "alloc vlan %d idx  %d slave %d port %d\n",
1655                          (int)(vp_admin->default_vlan),
1656                          admin_vlan_ix, slave, port);
1657         }
1658
1659         /* save original vlan ix and vlan id */
1660         work->orig_vlan_id = vp_oper->state.default_vlan;
1661         work->orig_vlan_ix = vp_oper->vlan_idx;
1662
1663         /* handle new qos */
1664         if (vp_oper->state.default_qos != vp_admin->default_qos)
1665                 work->flags |= MLX4_VF_IMMED_VLAN_FLAG_QOS;
1666
1667         if (work->flags & MLX4_VF_IMMED_VLAN_FLAG_VLAN)
1668                 vp_oper->vlan_idx = admin_vlan_ix;
1669
1670         vp_oper->state.default_vlan = vp_admin->default_vlan;
1671         vp_oper->state.default_qos = vp_admin->default_qos;
1672         vp_oper->state.link_state = vp_admin->link_state;
1673
1674         if (vp_admin->link_state == IFLA_VF_LINK_STATE_DISABLE)
1675                 work->flags |= MLX4_VF_IMMED_VLAN_FLAG_LINK_DISABLE;
1676
1677         /* iterate over QPs owned by this slave, using UPDATE_QP */
1678         work->port = port;
1679         work->slave = slave;
1680         work->qos = vp_oper->state.default_qos;
1681         work->vlan_id = vp_oper->state.default_vlan;
1682         work->vlan_ix = vp_oper->vlan_idx;
1683         work->priv = priv;
1684         INIT_WORK(&work->work, mlx4_vf_immed_vlan_work_handler);
1685         queue_work(priv->mfunc.master.comm_wq, &work->work);
1686
1687         return 0;
1688 }
1689
1690
1691 static int mlx4_master_activate_admin_state(struct mlx4_priv *priv, int slave)
1692 {
1693         int port, err;
1694         struct mlx4_vport_state *vp_admin;
1695         struct mlx4_vport_oper_state *vp_oper;
1696         struct mlx4_active_ports actv_ports = mlx4_get_active_ports(
1697                         &priv->dev, slave);
1698         int min_port = find_first_bit(actv_ports.ports,
1699                                       priv->dev.caps.num_ports) + 1;
1700         int max_port = min_port - 1 +
1701                 bitmap_weight(actv_ports.ports, priv->dev.caps.num_ports);
1702
1703         for (port = min_port; port <= max_port; port++) {
1704                 if (!test_bit(port - 1, actv_ports.ports))
1705                         continue;
1706                 priv->mfunc.master.vf_oper[slave].smi_enabled[port] =
1707                         priv->mfunc.master.vf_admin[slave].enable_smi[port];
1708                 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
1709                 vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
1710                 vp_oper->state = *vp_admin;
1711                 if (MLX4_VGT != vp_admin->default_vlan) {
1712                         err = __mlx4_register_vlan(&priv->dev, port,
1713                                                    vp_admin->default_vlan, &(vp_oper->vlan_idx));
1714                         if (err) {
1715                                 vp_oper->vlan_idx = NO_INDX;
1716                                 mlx4_warn(&priv->dev,
1717                                           "No vlan resources slave %d, port %d\n",
1718                                           slave, port);
1719                                 return err;
1720                         }
1721                         mlx4_dbg(&priv->dev, "alloc vlan %d idx  %d slave %d port %d\n",
1722                                  (int)(vp_oper->state.default_vlan),
1723                                  vp_oper->vlan_idx, slave, port);
1724                 }
1725                 if (vp_admin->spoofchk) {
1726                         vp_oper->mac_idx = __mlx4_register_mac(&priv->dev,
1727                                                                port,
1728                                                                vp_admin->mac);
1729                         if (0 > vp_oper->mac_idx) {
1730                                 err = vp_oper->mac_idx;
1731                                 vp_oper->mac_idx = NO_INDX;
1732                                 mlx4_warn(&priv->dev,
1733                                           "No mac resources slave %d, port %d\n",
1734                                           slave, port);
1735                                 return err;
1736                         }
1737                         mlx4_dbg(&priv->dev, "alloc mac %llx idx  %d slave %d port %d\n",
1738                                  vp_oper->state.mac, vp_oper->mac_idx, slave, port);
1739                 }
1740         }
1741         return 0;
1742 }
1743
1744 static void mlx4_master_deactivate_admin_state(struct mlx4_priv *priv, int slave)
1745 {
1746         int port;
1747         struct mlx4_vport_oper_state *vp_oper;
1748         struct mlx4_active_ports actv_ports = mlx4_get_active_ports(
1749                         &priv->dev, slave);
1750         int min_port = find_first_bit(actv_ports.ports,
1751                                       priv->dev.caps.num_ports) + 1;
1752         int max_port = min_port - 1 +
1753                 bitmap_weight(actv_ports.ports, priv->dev.caps.num_ports);
1754
1755
1756         for (port = min_port; port <= max_port; port++) {
1757                 if (!test_bit(port - 1, actv_ports.ports))
1758                         continue;
1759                 priv->mfunc.master.vf_oper[slave].smi_enabled[port] =
1760                         MLX4_VF_SMI_DISABLED;
1761                 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
1762                 if (NO_INDX != vp_oper->vlan_idx) {
1763                         __mlx4_unregister_vlan(&priv->dev,
1764                                                port, vp_oper->state.default_vlan);
1765                         vp_oper->vlan_idx = NO_INDX;
1766                 }
1767                 if (NO_INDX != vp_oper->mac_idx) {
1768                         __mlx4_unregister_mac(&priv->dev, port, vp_oper->state.mac);
1769                         vp_oper->mac_idx = NO_INDX;
1770                 }
1771         }
1772         return;
1773 }
1774
1775 static void mlx4_master_do_cmd(struct mlx4_dev *dev, int slave, u8 cmd,
1776                                u16 param, u8 toggle)
1777 {
1778         struct mlx4_priv *priv = mlx4_priv(dev);
1779         struct mlx4_slave_state *slave_state = priv->mfunc.master.slave_state;
1780         u32 reply;
1781         u8 is_going_down = 0;
1782         int i;
1783         unsigned long flags;
1784
1785         slave_state[slave].comm_toggle ^= 1;
1786         reply = (u32) slave_state[slave].comm_toggle << 31;
1787         if (toggle != slave_state[slave].comm_toggle) {
1788                 mlx4_warn(dev, "Incorrect toggle %d from slave %d. *** MASTER STATE COMPROMISED ***\n",
1789                           toggle, slave);
1790                 goto reset_slave;
1791         }
1792         if (cmd == MLX4_COMM_CMD_RESET) {
1793                 mlx4_warn(dev, "Received reset from slave:%d\n", slave);
1794                 slave_state[slave].active = false;
1795                 slave_state[slave].old_vlan_api = false;
1796                 mlx4_master_deactivate_admin_state(priv, slave);
1797                 for (i = 0; i < MLX4_EVENT_TYPES_NUM; ++i) {
1798                                 slave_state[slave].event_eq[i].eqn = -1;
1799                                 slave_state[slave].event_eq[i].token = 0;
1800                 }
1801                 /*check if we are in the middle of FLR process,
1802                 if so return "retry" status to the slave*/
1803                 if (MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd)
1804                         goto inform_slave_state;
1805
1806                 mlx4_dispatch_event(dev, MLX4_DEV_EVENT_SLAVE_SHUTDOWN, slave);
1807
1808                 /* write the version in the event field */
1809                 reply |= mlx4_comm_get_version();
1810
1811                 goto reset_slave;
1812         }
1813         /*command from slave in the middle of FLR*/
1814         if (cmd != MLX4_COMM_CMD_RESET &&
1815             MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd) {
1816                 mlx4_warn(dev, "slave:%d is Trying to run cmd(0x%x) in the middle of FLR\n",
1817                           slave, cmd);
1818                 return;
1819         }
1820
1821         switch (cmd) {
1822         case MLX4_COMM_CMD_VHCR0:
1823                 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_RESET)
1824                         goto reset_slave;
1825                 slave_state[slave].vhcr_dma = ((u64) param) << 48;
1826                 priv->mfunc.master.slave_state[slave].cookie = 0;
1827                 mutex_init(&priv->mfunc.master.gen_eqe_mutex[slave]);
1828                 break;
1829         case MLX4_COMM_CMD_VHCR1:
1830                 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR0)
1831                         goto reset_slave;
1832                 slave_state[slave].vhcr_dma |= ((u64) param) << 32;
1833                 break;
1834         case MLX4_COMM_CMD_VHCR2:
1835                 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR1)
1836                         goto reset_slave;
1837                 slave_state[slave].vhcr_dma |= ((u64) param) << 16;
1838                 break;
1839         case MLX4_COMM_CMD_VHCR_EN:
1840                 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR2)
1841                         goto reset_slave;
1842                 slave_state[slave].vhcr_dma |= param;
1843                 if (mlx4_master_activate_admin_state(priv, slave))
1844                                 goto reset_slave;
1845                 slave_state[slave].active = true;
1846                 mlx4_dispatch_event(dev, MLX4_DEV_EVENT_SLAVE_INIT, slave);
1847                 break;
1848         case MLX4_COMM_CMD_VHCR_POST:
1849                 if ((slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_EN) &&
1850                     (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_POST))
1851                         goto reset_slave;
1852
1853                 mutex_lock(&priv->cmd.slave_cmd_mutex);
1854                 if (mlx4_master_process_vhcr(dev, slave, NULL)) {
1855                         mlx4_err(dev, "Failed processing vhcr for slave:%d, resetting slave\n",
1856                                  slave);
1857                         mutex_unlock(&priv->cmd.slave_cmd_mutex);
1858                         goto reset_slave;
1859                 }
1860                 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1861                 break;
1862         default:
1863                 mlx4_warn(dev, "Bad comm cmd:%d from slave:%d\n", cmd, slave);
1864                 goto reset_slave;
1865         }
1866         spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
1867         if (!slave_state[slave].is_slave_going_down)
1868                 slave_state[slave].last_cmd = cmd;
1869         else
1870                 is_going_down = 1;
1871         spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
1872         if (is_going_down) {
1873                 mlx4_warn(dev, "Slave is going down aborting command(%d) executing from slave:%d\n",
1874                           cmd, slave);
1875                 return;
1876         }
1877         __raw_writel((__force u32) cpu_to_be32(reply),
1878                      &priv->mfunc.comm[slave].slave_read);
1879         mmiowb();
1880
1881         return;
1882
1883 reset_slave:
1884         /* cleanup any slave resources */
1885         mlx4_delete_all_resources_for_slave(dev, slave);
1886         spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
1887         if (!slave_state[slave].is_slave_going_down)
1888                 slave_state[slave].last_cmd = MLX4_COMM_CMD_RESET;
1889         spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
1890         /*with slave in the middle of flr, no need to clean resources again.*/
1891 inform_slave_state:
1892         memset(&slave_state[slave].event_eq, 0,
1893                sizeof(struct mlx4_slave_event_eq_info));
1894         __raw_writel((__force u32) cpu_to_be32(reply),
1895                      &priv->mfunc.comm[slave].slave_read);
1896         wmb();
1897 }
1898
1899 /* master command processing */
1900 void mlx4_master_comm_channel(struct work_struct *work)
1901 {
1902         struct mlx4_mfunc_master_ctx *master =
1903                 container_of(work,
1904                              struct mlx4_mfunc_master_ctx,
1905                              comm_work);
1906         struct mlx4_mfunc *mfunc =
1907                 container_of(master, struct mlx4_mfunc, master);
1908         struct mlx4_priv *priv =
1909                 container_of(mfunc, struct mlx4_priv, mfunc);
1910         struct mlx4_dev *dev = &priv->dev;
1911         __be32 *bit_vec;
1912         u32 comm_cmd;
1913         u32 vec;
1914         int i, j, slave;
1915         int toggle;
1916         int served = 0;
1917         int reported = 0;
1918         u32 slt;
1919
1920         bit_vec = master->comm_arm_bit_vector;
1921         for (i = 0; i < COMM_CHANNEL_BIT_ARRAY_SIZE; i++) {
1922                 vec = be32_to_cpu(bit_vec[i]);
1923                 for (j = 0; j < 32; j++) {
1924                         if (!(vec & (1 << j)))
1925                                 continue;
1926                         ++reported;
1927                         slave = (i * 32) + j;
1928                         comm_cmd = swab32(readl(
1929                                           &mfunc->comm[slave].slave_write));
1930                         slt = swab32(readl(&mfunc->comm[slave].slave_read))
1931                                      >> 31;
1932                         toggle = comm_cmd >> 31;
1933                         if (toggle != slt) {
1934                                 if (master->slave_state[slave].comm_toggle
1935                                     != slt) {
1936                                         pr_info("slave %d out of sync. read toggle %d, state toggle %d. Resynching.\n",
1937                                                 slave, slt,
1938                                                 master->slave_state[slave].comm_toggle);
1939                                         master->slave_state[slave].comm_toggle =
1940                                                 slt;
1941                                 }
1942                                 mlx4_master_do_cmd(dev, slave,
1943                                                    comm_cmd >> 16 & 0xff,
1944                                                    comm_cmd & 0xffff, toggle);
1945                                 ++served;
1946                         }
1947                 }
1948         }
1949
1950         if (reported && reported != served)
1951                 mlx4_warn(dev, "Got command event with bitmask from %d slaves but %d were served\n",
1952                           reported, served);
1953
1954         if (mlx4_ARM_COMM_CHANNEL(dev))
1955                 mlx4_warn(dev, "Failed to arm comm channel events\n");
1956 }
1957
1958 static int sync_toggles(struct mlx4_dev *dev)
1959 {
1960         struct mlx4_priv *priv = mlx4_priv(dev);
1961         int wr_toggle;
1962         int rd_toggle;
1963         unsigned long end;
1964
1965         wr_toggle = swab32(readl(&priv->mfunc.comm->slave_write)) >> 31;
1966         end = jiffies + msecs_to_jiffies(5000);
1967
1968         while (time_before(jiffies, end)) {
1969                 rd_toggle = swab32(readl(&priv->mfunc.comm->slave_read)) >> 31;
1970                 if (rd_toggle == wr_toggle) {
1971                         priv->cmd.comm_toggle = rd_toggle;
1972                         return 0;
1973                 }
1974
1975                 cond_resched();
1976         }
1977
1978         /*
1979          * we could reach here if for example the previous VM using this
1980          * function misbehaved and left the channel with unsynced state. We
1981          * should fix this here and give this VM a chance to use a properly
1982          * synced channel
1983          */
1984         mlx4_warn(dev, "recovering from previously mis-behaved VM\n");
1985         __raw_writel((__force u32) 0, &priv->mfunc.comm->slave_read);
1986         __raw_writel((__force u32) 0, &priv->mfunc.comm->slave_write);
1987         priv->cmd.comm_toggle = 0;
1988
1989         return 0;
1990 }
1991
1992 int mlx4_multi_func_init(struct mlx4_dev *dev)
1993 {
1994         struct mlx4_priv *priv = mlx4_priv(dev);
1995         struct mlx4_slave_state *s_state;
1996         int i, j, err, port;
1997
1998         if (mlx4_is_master(dev))
1999                 priv->mfunc.comm =
2000                 ioremap(pci_resource_start(dev->pdev, priv->fw.comm_bar) +
2001                         priv->fw.comm_base, MLX4_COMM_PAGESIZE);
2002         else
2003                 priv->mfunc.comm =
2004                 ioremap(pci_resource_start(dev->pdev, 2) +
2005                         MLX4_SLAVE_COMM_BASE, MLX4_COMM_PAGESIZE);
2006         if (!priv->mfunc.comm) {
2007                 mlx4_err(dev, "Couldn't map communication vector\n");
2008                 goto err_vhcr;
2009         }
2010
2011         if (mlx4_is_master(dev)) {
2012                 priv->mfunc.master.slave_state =
2013                         kzalloc(dev->num_slaves *
2014                                 sizeof(struct mlx4_slave_state), GFP_KERNEL);
2015                 if (!priv->mfunc.master.slave_state)
2016                         goto err_comm;
2017
2018                 priv->mfunc.master.vf_admin =
2019                         kzalloc(dev->num_slaves *
2020                                 sizeof(struct mlx4_vf_admin_state), GFP_KERNEL);
2021                 if (!priv->mfunc.master.vf_admin)
2022                         goto err_comm_admin;
2023
2024                 priv->mfunc.master.vf_oper =
2025                         kzalloc(dev->num_slaves *
2026                                 sizeof(struct mlx4_vf_oper_state), GFP_KERNEL);
2027                 if (!priv->mfunc.master.vf_oper)
2028                         goto err_comm_oper;
2029
2030                 for (i = 0; i < dev->num_slaves; ++i) {
2031                         s_state = &priv->mfunc.master.slave_state[i];
2032                         s_state->last_cmd = MLX4_COMM_CMD_RESET;
2033                         for (j = 0; j < MLX4_EVENT_TYPES_NUM; ++j)
2034                                 s_state->event_eq[j].eqn = -1;
2035                         __raw_writel((__force u32) 0,
2036                                      &priv->mfunc.comm[i].slave_write);
2037                         __raw_writel((__force u32) 0,
2038                                      &priv->mfunc.comm[i].slave_read);
2039                         mmiowb();
2040                         for (port = 1; port <= MLX4_MAX_PORTS; port++) {
2041                                 s_state->vlan_filter[port] =
2042                                         kzalloc(sizeof(struct mlx4_vlan_fltr),
2043                                                 GFP_KERNEL);
2044                                 if (!s_state->vlan_filter[port]) {
2045                                         if (--port)
2046                                                 kfree(s_state->vlan_filter[port]);
2047                                         goto err_slaves;
2048                                 }
2049                                 INIT_LIST_HEAD(&s_state->mcast_filters[port]);
2050                                 priv->mfunc.master.vf_admin[i].vport[port].default_vlan = MLX4_VGT;
2051                                 priv->mfunc.master.vf_oper[i].vport[port].state.default_vlan = MLX4_VGT;
2052                                 priv->mfunc.master.vf_oper[i].vport[port].vlan_idx = NO_INDX;
2053                                 priv->mfunc.master.vf_oper[i].vport[port].mac_idx = NO_INDX;
2054                         }
2055                         spin_lock_init(&s_state->lock);
2056                 }
2057
2058                 memset(&priv->mfunc.master.cmd_eqe, 0, dev->caps.eqe_size);
2059                 priv->mfunc.master.cmd_eqe.type = MLX4_EVENT_TYPE_CMD;
2060                 INIT_WORK(&priv->mfunc.master.comm_work,
2061                           mlx4_master_comm_channel);
2062                 INIT_WORK(&priv->mfunc.master.slave_event_work,
2063                           mlx4_gen_slave_eqe);
2064                 INIT_WORK(&priv->mfunc.master.slave_flr_event_work,
2065                           mlx4_master_handle_slave_flr);
2066                 spin_lock_init(&priv->mfunc.master.slave_state_lock);
2067                 spin_lock_init(&priv->mfunc.master.slave_eq.event_lock);
2068                 priv->mfunc.master.comm_wq =
2069                         create_singlethread_workqueue("mlx4_comm");
2070                 if (!priv->mfunc.master.comm_wq)
2071                         goto err_slaves;
2072
2073                 if (mlx4_init_resource_tracker(dev))
2074                         goto err_thread;
2075
2076                 err = mlx4_ARM_COMM_CHANNEL(dev);
2077                 if (err) {
2078                         mlx4_err(dev, " Failed to arm comm channel eq: %x\n",
2079                                  err);
2080                         goto err_resource;
2081                 }
2082
2083         } else {
2084                 err = sync_toggles(dev);
2085                 if (err) {
2086                         mlx4_err(dev, "Couldn't sync toggles\n");
2087                         goto err_comm;
2088                 }
2089         }
2090         return 0;
2091
2092 err_resource:
2093         mlx4_free_resource_tracker(dev, RES_TR_FREE_ALL);
2094 err_thread:
2095         flush_workqueue(priv->mfunc.master.comm_wq);
2096         destroy_workqueue(priv->mfunc.master.comm_wq);
2097 err_slaves:
2098         while (--i) {
2099                 for (port = 1; port <= MLX4_MAX_PORTS; port++)
2100                         kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]);
2101         }
2102         kfree(priv->mfunc.master.vf_oper);
2103 err_comm_oper:
2104         kfree(priv->mfunc.master.vf_admin);
2105 err_comm_admin:
2106         kfree(priv->mfunc.master.slave_state);
2107 err_comm:
2108         iounmap(priv->mfunc.comm);
2109 err_vhcr:
2110         dma_free_coherent(&(dev->pdev->dev), PAGE_SIZE,
2111                                              priv->mfunc.vhcr,
2112                                              priv->mfunc.vhcr_dma);
2113         priv->mfunc.vhcr = NULL;
2114         return -ENOMEM;
2115 }
2116
2117 int mlx4_cmd_init(struct mlx4_dev *dev)
2118 {
2119         struct mlx4_priv *priv = mlx4_priv(dev);
2120         int flags = 0;
2121
2122         if (!priv->cmd.initialized) {
2123                 mutex_init(&priv->cmd.hcr_mutex);
2124                 mutex_init(&priv->cmd.slave_cmd_mutex);
2125                 sema_init(&priv->cmd.poll_sem, 1);
2126                 priv->cmd.use_events = 0;
2127                 priv->cmd.toggle     = 1;
2128                 priv->cmd.initialized = 1;
2129                 flags |= MLX4_CMD_CLEANUP_STRUCT;
2130         }
2131
2132         if (!mlx4_is_slave(dev) && !priv->cmd.hcr) {
2133                 priv->cmd.hcr = ioremap(pci_resource_start(dev->pdev, 0) +
2134                                         MLX4_HCR_BASE, MLX4_HCR_SIZE);
2135                 if (!priv->cmd.hcr) {
2136                         mlx4_err(dev, "Couldn't map command register\n");
2137                         goto err;
2138                 }
2139                 flags |= MLX4_CMD_CLEANUP_HCR;
2140         }
2141
2142         if (mlx4_is_mfunc(dev) && !priv->mfunc.vhcr) {
2143                 priv->mfunc.vhcr = dma_alloc_coherent(&(dev->pdev->dev), PAGE_SIZE,
2144                                                       &priv->mfunc.vhcr_dma,
2145                                                       GFP_KERNEL);
2146                 if (!priv->mfunc.vhcr)
2147                         goto err;
2148
2149                 flags |= MLX4_CMD_CLEANUP_VHCR;
2150         }
2151
2152         if (!priv->cmd.pool) {
2153                 priv->cmd.pool = pci_pool_create("mlx4_cmd", dev->pdev,
2154                                                  MLX4_MAILBOX_SIZE,
2155                                                  MLX4_MAILBOX_SIZE, 0);
2156                 if (!priv->cmd.pool)
2157                         goto err;
2158
2159                 flags |= MLX4_CMD_CLEANUP_POOL;
2160         }
2161
2162         return 0;
2163
2164 err:
2165         mlx4_cmd_cleanup(dev, flags);
2166         return -ENOMEM;
2167 }
2168
2169 void mlx4_multi_func_cleanup(struct mlx4_dev *dev)
2170 {
2171         struct mlx4_priv *priv = mlx4_priv(dev);
2172         int i, port;
2173
2174         if (mlx4_is_master(dev)) {
2175                 flush_workqueue(priv->mfunc.master.comm_wq);
2176                 destroy_workqueue(priv->mfunc.master.comm_wq);
2177                 for (i = 0; i < dev->num_slaves; i++) {
2178                         for (port = 1; port <= MLX4_MAX_PORTS; port++)
2179                                 kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]);
2180                 }
2181                 kfree(priv->mfunc.master.slave_state);
2182                 kfree(priv->mfunc.master.vf_admin);
2183                 kfree(priv->mfunc.master.vf_oper);
2184         }
2185
2186         iounmap(priv->mfunc.comm);
2187 }
2188
2189 void mlx4_cmd_cleanup(struct mlx4_dev *dev, int cleanup_mask)
2190 {
2191         struct mlx4_priv *priv = mlx4_priv(dev);
2192
2193         if (priv->cmd.pool && (cleanup_mask & MLX4_CMD_CLEANUP_POOL)) {
2194                 pci_pool_destroy(priv->cmd.pool);
2195                 priv->cmd.pool = NULL;
2196         }
2197
2198         if (!mlx4_is_slave(dev) && priv->cmd.hcr &&
2199             (cleanup_mask & MLX4_CMD_CLEANUP_HCR)) {
2200                 iounmap(priv->cmd.hcr);
2201                 priv->cmd.hcr = NULL;
2202         }
2203         if (mlx4_is_mfunc(dev) && priv->mfunc.vhcr &&
2204             (cleanup_mask & MLX4_CMD_CLEANUP_VHCR)) {
2205                 dma_free_coherent(&(dev->pdev->dev), PAGE_SIZE,
2206                                   priv->mfunc.vhcr, priv->mfunc.vhcr_dma);
2207                 priv->mfunc.vhcr = NULL;
2208         }
2209         if (priv->cmd.initialized && (cleanup_mask & MLX4_CMD_CLEANUP_STRUCT))
2210                 priv->cmd.initialized = 0;
2211 }
2212
2213 /*
2214  * Switch to using events to issue FW commands (can only be called
2215  * after event queue for command events has been initialized).
2216  */
2217 int mlx4_cmd_use_events(struct mlx4_dev *dev)
2218 {
2219         struct mlx4_priv *priv = mlx4_priv(dev);
2220         int i;
2221         int err = 0;
2222
2223         priv->cmd.context = kmalloc(priv->cmd.max_cmds *
2224                                    sizeof (struct mlx4_cmd_context),
2225                                    GFP_KERNEL);
2226         if (!priv->cmd.context)
2227                 return -ENOMEM;
2228
2229         for (i = 0; i < priv->cmd.max_cmds; ++i) {
2230                 priv->cmd.context[i].token = i;
2231                 priv->cmd.context[i].next  = i + 1;
2232         }
2233
2234         priv->cmd.context[priv->cmd.max_cmds - 1].next = -1;
2235         priv->cmd.free_head = 0;
2236
2237         sema_init(&priv->cmd.event_sem, priv->cmd.max_cmds);
2238         spin_lock_init(&priv->cmd.context_lock);
2239
2240         for (priv->cmd.token_mask = 1;
2241              priv->cmd.token_mask < priv->cmd.max_cmds;
2242              priv->cmd.token_mask <<= 1)
2243                 ; /* nothing */
2244         --priv->cmd.token_mask;
2245
2246         down(&priv->cmd.poll_sem);
2247         priv->cmd.use_events = 1;
2248
2249         return err;
2250 }
2251
2252 /*
2253  * Switch back to polling (used when shutting down the device)
2254  */
2255 void mlx4_cmd_use_polling(struct mlx4_dev *dev)
2256 {
2257         struct mlx4_priv *priv = mlx4_priv(dev);
2258         int i;
2259
2260         priv->cmd.use_events = 0;
2261
2262         for (i = 0; i < priv->cmd.max_cmds; ++i)
2263                 down(&priv->cmd.event_sem);
2264
2265         kfree(priv->cmd.context);
2266
2267         up(&priv->cmd.poll_sem);
2268 }
2269
2270 struct mlx4_cmd_mailbox *mlx4_alloc_cmd_mailbox(struct mlx4_dev *dev)
2271 {
2272         struct mlx4_cmd_mailbox *mailbox;
2273
2274         mailbox = kmalloc(sizeof *mailbox, GFP_KERNEL);
2275         if (!mailbox)
2276                 return ERR_PTR(-ENOMEM);
2277
2278         mailbox->buf = pci_pool_alloc(mlx4_priv(dev)->cmd.pool, GFP_KERNEL,
2279                                       &mailbox->dma);
2280         if (!mailbox->buf) {
2281                 kfree(mailbox);
2282                 return ERR_PTR(-ENOMEM);
2283         }
2284
2285         memset(mailbox->buf, 0, MLX4_MAILBOX_SIZE);
2286
2287         return mailbox;
2288 }
2289 EXPORT_SYMBOL_GPL(mlx4_alloc_cmd_mailbox);
2290
2291 void mlx4_free_cmd_mailbox(struct mlx4_dev *dev,
2292                            struct mlx4_cmd_mailbox *mailbox)
2293 {
2294         if (!mailbox)
2295                 return;
2296
2297         pci_pool_free(mlx4_priv(dev)->cmd.pool, mailbox->buf, mailbox->dma);
2298         kfree(mailbox);
2299 }
2300 EXPORT_SYMBOL_GPL(mlx4_free_cmd_mailbox);
2301
2302 u32 mlx4_comm_get_version(void)
2303 {
2304          return ((u32) CMD_CHAN_IF_REV << 8) | (u32) CMD_CHAN_VER;
2305 }
2306
2307 static int mlx4_get_slave_indx(struct mlx4_dev *dev, int vf)
2308 {
2309         if ((vf < 0) || (vf >= dev->num_vfs)) {
2310                 mlx4_err(dev, "Bad vf number:%d (number of activated vf: %d)\n", vf, dev->num_vfs);
2311                 return -EINVAL;
2312         }
2313
2314         return vf+1;
2315 }
2316
2317 int mlx4_get_vf_indx(struct mlx4_dev *dev, int slave)
2318 {
2319         if (slave < 1 || slave > dev->num_vfs) {
2320                 mlx4_err(dev,
2321                          "Bad slave number:%d (number of activated slaves: %lu)\n",
2322                          slave, dev->num_slaves);
2323                 return -EINVAL;
2324         }
2325         return slave - 1;
2326 }
2327
2328 struct mlx4_active_ports mlx4_get_active_ports(struct mlx4_dev *dev, int slave)
2329 {
2330         struct mlx4_active_ports actv_ports;
2331         int vf;
2332
2333         bitmap_zero(actv_ports.ports, MLX4_MAX_PORTS);
2334
2335         if (slave == 0) {
2336                 bitmap_fill(actv_ports.ports, dev->caps.num_ports);
2337                 return actv_ports;
2338         }
2339
2340         vf = mlx4_get_vf_indx(dev, slave);
2341         if (vf < 0)
2342                 return actv_ports;
2343
2344         bitmap_set(actv_ports.ports, dev->dev_vfs[vf].min_port - 1,
2345                    min((int)dev->dev_vfs[mlx4_get_vf_indx(dev, slave)].n_ports,
2346                    dev->caps.num_ports));
2347
2348         return actv_ports;
2349 }
2350 EXPORT_SYMBOL_GPL(mlx4_get_active_ports);
2351
2352 int mlx4_slave_convert_port(struct mlx4_dev *dev, int slave, int port)
2353 {
2354         unsigned n;
2355         struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
2356         unsigned m = bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2357
2358         if (port <= 0 || port > m)
2359                 return -EINVAL;
2360
2361         n = find_first_bit(actv_ports.ports, dev->caps.num_ports);
2362         if (port <= n)
2363                 port = n + 1;
2364
2365         return port;
2366 }
2367 EXPORT_SYMBOL_GPL(mlx4_slave_convert_port);
2368
2369 int mlx4_phys_to_slave_port(struct mlx4_dev *dev, int slave, int port)
2370 {
2371         struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
2372         if (test_bit(port - 1, actv_ports.ports))
2373                 return port -
2374                         find_first_bit(actv_ports.ports, dev->caps.num_ports);
2375
2376         return -1;
2377 }
2378 EXPORT_SYMBOL_GPL(mlx4_phys_to_slave_port);
2379
2380 struct mlx4_slaves_pport mlx4_phys_to_slaves_pport(struct mlx4_dev *dev,
2381                                                    int port)
2382 {
2383         unsigned i;
2384         struct mlx4_slaves_pport slaves_pport;
2385
2386         bitmap_zero(slaves_pport.slaves, MLX4_MFUNC_MAX);
2387
2388         if (port <= 0 || port > dev->caps.num_ports)
2389                 return slaves_pport;
2390
2391         for (i = 0; i < dev->num_vfs + 1; i++) {
2392                 struct mlx4_active_ports actv_ports =
2393                         mlx4_get_active_ports(dev, i);
2394                 if (test_bit(port - 1, actv_ports.ports))
2395                         set_bit(i, slaves_pport.slaves);
2396         }
2397
2398         return slaves_pport;
2399 }
2400 EXPORT_SYMBOL_GPL(mlx4_phys_to_slaves_pport);
2401
2402 struct mlx4_slaves_pport mlx4_phys_to_slaves_pport_actv(
2403                 struct mlx4_dev *dev,
2404                 const struct mlx4_active_ports *crit_ports)
2405 {
2406         unsigned i;
2407         struct mlx4_slaves_pport slaves_pport;
2408
2409         bitmap_zero(slaves_pport.slaves, MLX4_MFUNC_MAX);
2410
2411         for (i = 0; i < dev->num_vfs + 1; i++) {
2412                 struct mlx4_active_ports actv_ports =
2413                         mlx4_get_active_ports(dev, i);
2414                 if (bitmap_equal(crit_ports->ports, actv_ports.ports,
2415                                  dev->caps.num_ports))
2416                         set_bit(i, slaves_pport.slaves);
2417         }
2418
2419         return slaves_pport;
2420 }
2421 EXPORT_SYMBOL_GPL(mlx4_phys_to_slaves_pport_actv);
2422
2423 static int mlx4_slaves_closest_port(struct mlx4_dev *dev, int slave, int port)
2424 {
2425         struct mlx4_active_ports actv_ports = mlx4_get_active_ports(dev, slave);
2426         int min_port = find_first_bit(actv_ports.ports, dev->caps.num_ports)
2427                         + 1;
2428         int max_port = min_port +
2429                 bitmap_weight(actv_ports.ports, dev->caps.num_ports);
2430
2431         if (port < min_port)
2432                 port = min_port;
2433         else if (port >= max_port)
2434                 port = max_port - 1;
2435
2436         return port;
2437 }
2438
2439 int mlx4_set_vf_mac(struct mlx4_dev *dev, int port, int vf, u64 mac)
2440 {
2441         struct mlx4_priv *priv = mlx4_priv(dev);
2442         struct mlx4_vport_state *s_info;
2443         int slave;
2444
2445         if (!mlx4_is_master(dev))
2446                 return -EPROTONOSUPPORT;
2447
2448         slave = mlx4_get_slave_indx(dev, vf);
2449         if (slave < 0)
2450                 return -EINVAL;
2451
2452         port = mlx4_slaves_closest_port(dev, slave, port);
2453         s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
2454         s_info->mac = mac;
2455         mlx4_info(dev, "default mac on vf %d port %d to %llX will take afect only after vf restart\n",
2456                   vf, port, s_info->mac);
2457         return 0;
2458 }
2459 EXPORT_SYMBOL_GPL(mlx4_set_vf_mac);
2460
2461
2462 int mlx4_set_vf_vlan(struct mlx4_dev *dev, int port, int vf, u16 vlan, u8 qos)
2463 {
2464         struct mlx4_priv *priv = mlx4_priv(dev);
2465         struct mlx4_vport_state *vf_admin;
2466         int slave;
2467
2468         if ((!mlx4_is_master(dev)) ||
2469             !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VLAN_CONTROL))
2470                 return -EPROTONOSUPPORT;
2471
2472         if ((vlan > 4095) || (qos > 7))
2473                 return -EINVAL;
2474
2475         slave = mlx4_get_slave_indx(dev, vf);
2476         if (slave < 0)
2477                 return -EINVAL;
2478
2479         port = mlx4_slaves_closest_port(dev, slave, port);
2480         vf_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
2481
2482         if ((0 == vlan) && (0 == qos))
2483                 vf_admin->default_vlan = MLX4_VGT;
2484         else
2485                 vf_admin->default_vlan = vlan;
2486         vf_admin->default_qos = qos;
2487
2488         if (mlx4_master_immediate_activate_vlan_qos(priv, slave, port))
2489                 mlx4_info(dev,
2490                           "updating vf %d port %d config will take effect on next VF restart\n",
2491                           vf, port);
2492         return 0;
2493 }
2494 EXPORT_SYMBOL_GPL(mlx4_set_vf_vlan);
2495
2496  /* mlx4_get_slave_default_vlan -
2497  * return true if VST ( default vlan)
2498  * if VST, will return vlan & qos (if not NULL)
2499  */
2500 bool mlx4_get_slave_default_vlan(struct mlx4_dev *dev, int port, int slave,
2501                                  u16 *vlan, u8 *qos)
2502 {
2503         struct mlx4_vport_oper_state *vp_oper;
2504         struct mlx4_priv *priv;
2505
2506         priv = mlx4_priv(dev);
2507         port = mlx4_slaves_closest_port(dev, slave, port);
2508         vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
2509
2510         if (MLX4_VGT != vp_oper->state.default_vlan) {
2511                 if (vlan)
2512                         *vlan = vp_oper->state.default_vlan;
2513                 if (qos)
2514                         *qos = vp_oper->state.default_qos;
2515                 return true;
2516         }
2517         return false;
2518 }
2519 EXPORT_SYMBOL_GPL(mlx4_get_slave_default_vlan);
2520
2521 int mlx4_set_vf_spoofchk(struct mlx4_dev *dev, int port, int vf, bool setting)
2522 {
2523         struct mlx4_priv *priv = mlx4_priv(dev);
2524         struct mlx4_vport_state *s_info;
2525         int slave;
2526
2527         if ((!mlx4_is_master(dev)) ||
2528             !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FSM))
2529                 return -EPROTONOSUPPORT;
2530
2531         slave = mlx4_get_slave_indx(dev, vf);
2532         if (slave < 0)
2533                 return -EINVAL;
2534
2535         port = mlx4_slaves_closest_port(dev, slave, port);
2536         s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
2537         s_info->spoofchk = setting;
2538
2539         return 0;
2540 }
2541 EXPORT_SYMBOL_GPL(mlx4_set_vf_spoofchk);
2542
2543 int mlx4_get_vf_config(struct mlx4_dev *dev, int port, int vf, struct ifla_vf_info *ivf)
2544 {
2545         struct mlx4_priv *priv = mlx4_priv(dev);
2546         struct mlx4_vport_state *s_info;
2547         int slave;
2548
2549         if (!mlx4_is_master(dev))
2550                 return -EPROTONOSUPPORT;
2551
2552         slave = mlx4_get_slave_indx(dev, vf);
2553         if (slave < 0)
2554                 return -EINVAL;
2555
2556         s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
2557         ivf->vf = vf;
2558
2559         /* need to convert it to a func */
2560         ivf->mac[0] = ((s_info->mac >> (5*8)) & 0xff);
2561         ivf->mac[1] = ((s_info->mac >> (4*8)) & 0xff);
2562         ivf->mac[2] = ((s_info->mac >> (3*8)) & 0xff);
2563         ivf->mac[3] = ((s_info->mac >> (2*8)) & 0xff);
2564         ivf->mac[4] = ((s_info->mac >> (1*8)) & 0xff);
2565         ivf->mac[5] = ((s_info->mac)  & 0xff);
2566
2567         ivf->vlan               = s_info->default_vlan;
2568         ivf->qos                = s_info->default_qos;
2569         ivf->max_tx_rate        = s_info->tx_rate;
2570         ivf->min_tx_rate        = 0;
2571         ivf->spoofchk           = s_info->spoofchk;
2572         ivf->linkstate          = s_info->link_state;
2573
2574         return 0;
2575 }
2576 EXPORT_SYMBOL_GPL(mlx4_get_vf_config);
2577
2578 int mlx4_set_vf_link_state(struct mlx4_dev *dev, int port, int vf, int link_state)
2579 {
2580         struct mlx4_priv *priv = mlx4_priv(dev);
2581         struct mlx4_vport_state *s_info;
2582         int slave;
2583         u8 link_stat_event;
2584
2585         slave = mlx4_get_slave_indx(dev, vf);
2586         if (slave < 0)
2587                 return -EINVAL;
2588
2589         port = mlx4_slaves_closest_port(dev, slave, port);
2590         switch (link_state) {
2591         case IFLA_VF_LINK_STATE_AUTO:
2592                 /* get current link state */
2593                 if (!priv->sense.do_sense_port[port])
2594                         link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_ACTIVE;
2595                 else
2596                         link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_DOWN;
2597             break;
2598
2599         case IFLA_VF_LINK_STATE_ENABLE:
2600                 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_ACTIVE;
2601             break;
2602
2603         case IFLA_VF_LINK_STATE_DISABLE:
2604                 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_DOWN;
2605             break;
2606
2607         default:
2608                 mlx4_warn(dev, "unknown value for link_state %02x on slave %d port %d\n",
2609                           link_state, slave, port);
2610                 return -EINVAL;
2611         };
2612         s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
2613         s_info->link_state = link_state;
2614
2615         /* send event */
2616         mlx4_gen_port_state_change_eqe(dev, slave, port, link_stat_event);
2617
2618         if (mlx4_master_immediate_activate_vlan_qos(priv, slave, port))
2619                 mlx4_dbg(dev,
2620                          "updating vf %d port %d no link state HW enforcment\n",
2621                          vf, port);
2622         return 0;
2623 }
2624 EXPORT_SYMBOL_GPL(mlx4_set_vf_link_state);
2625
2626 int mlx4_vf_smi_enabled(struct mlx4_dev *dev, int slave, int port)
2627 {
2628         struct mlx4_priv *priv = mlx4_priv(dev);
2629
2630         if (slave < 1 || slave >= dev->num_slaves ||
2631             port < 1 || port > MLX4_MAX_PORTS)
2632                 return 0;
2633
2634         return priv->mfunc.master.vf_oper[slave].smi_enabled[port] ==
2635                 MLX4_VF_SMI_ENABLED;
2636 }
2637 EXPORT_SYMBOL_GPL(mlx4_vf_smi_enabled);
2638
2639 int mlx4_vf_get_enable_smi_admin(struct mlx4_dev *dev, int slave, int port)
2640 {
2641         struct mlx4_priv *priv = mlx4_priv(dev);
2642
2643         if (slave == mlx4_master_func_num(dev))
2644                 return 1;
2645
2646         if (slave < 1 || slave >= dev->num_slaves ||
2647             port < 1 || port > MLX4_MAX_PORTS)
2648                 return 0;
2649
2650         return priv->mfunc.master.vf_admin[slave].enable_smi[port] ==
2651                 MLX4_VF_SMI_ENABLED;
2652 }
2653 EXPORT_SYMBOL_GPL(mlx4_vf_get_enable_smi_admin);
2654
2655 int mlx4_vf_set_enable_smi_admin(struct mlx4_dev *dev, int slave, int port,
2656                                  int enabled)
2657 {
2658         struct mlx4_priv *priv = mlx4_priv(dev);
2659
2660         if (slave == mlx4_master_func_num(dev))
2661                 return 0;
2662
2663         if (slave < 1 || slave >= dev->num_slaves ||
2664             port < 1 || port > MLX4_MAX_PORTS ||
2665             enabled < 0 || enabled > 1)
2666                 return -EINVAL;
2667
2668         priv->mfunc.master.vf_admin[slave].enable_smi[port] = enabled;
2669         return 0;
2670 }
2671 EXPORT_SYMBOL_GPL(mlx4_vf_set_enable_smi_admin);