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."
 216                           "my toggle is %d (cmd:0x%x)\n",
 217                           priv->cmd.comm_toggle, cmd);
 218                 return -EAGAIN;
 219         }
 220
 221         /* Write command */
 222         down(&priv->cmd.poll_sem);
 223         mlx4_comm_cmd_post(dev, cmd, param);
 224
 225         end = msecs_to_jiffies(timeout) + jiffies;
 226         while (comm_pending(dev) && time_before(jiffies, end))
 227                 cond_resched();
 228         ret_from_pending = comm_pending(dev);
 229         if (ret_from_pending) {
 230                 /* check if the slave is trying to boot in the middle of
 231                  * FLR process. The only non-zero result in the RESET command
 232                  * is MLX4_DELAY_RESET_SLAVE*/
 233                 if ((MLX4_COMM_CMD_RESET == cmd)) {
 234                         err = MLX4_DELAY_RESET_SLAVE;
 235                 } else {
 236                         mlx4_warn(dev, "Communication channel timed out\n");
 237                         err = -ETIMEDOUT;
 238                 }
 239         }
 240
 241         up(&priv->cmd.poll_sem);
 242         return err;
 243 }
 244
 245 static int mlx4_comm_cmd_wait(struct mlx4_dev *dev, u8 op,
 246                               u16 param, unsigned long timeout)
 247 {
 248         struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
 249         struct mlx4_cmd_context *context;
 250         unsigned long end;
 251         int err = 0;
 252
 253         down(&cmd->event_sem);
 254
 255         spin_lock(&cmd->context_lock);
 256         BUG_ON(cmd->free_head < 0);
 257         context = &cmd->context[cmd->free_head];
 258         context->token += cmd->token_mask + 1;
 259         cmd->free_head = context->next;
 260         spin_unlock(&cmd->context_lock);
 261
 262         init_completion(&context->done);
 263
 264         mlx4_comm_cmd_post(dev, op, param);
 265
 266         if (!wait_for_completion_timeout(&context->done,
 267                                          msecs_to_jiffies(timeout))) {
 268                 mlx4_warn(dev, "communication channel command 0x%x timed out\n",
 269                           op);
 270                 err = -EBUSY;
 271                 goto out;
 272         }
 273
 274         err = context->result;
 275         if (err && context->fw_status != CMD_STAT_MULTI_FUNC_REQ) {
 276                 mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
 277                          op, context->fw_status);
 278                 goto out;
 279         }
 280
 281 out:
 282         /* wait for comm channel ready
 283          * this is necessary for prevention the race
 284          * when switching between event to polling mode
 285          */
 286         end = msecs_to_jiffies(timeout) + jiffies;
 287         while (comm_pending(dev) && time_before(jiffies, end))
 288                 cond_resched();
 289
 290         spin_lock(&cmd->context_lock);
 291         context->next = cmd->free_head;
 292         cmd->free_head = context - cmd->context;
 293         spin_unlock(&cmd->context_lock);
 294
 295         up(&cmd->event_sem);
 296         return err;
 297 }
 298
 299 int mlx4_comm_cmd(struct mlx4_dev *dev, u8 cmd, u16 param,
 300                   unsigned long timeout)
 301 {
 302         if (mlx4_priv(dev)->cmd.use_events)
 303                 return mlx4_comm_cmd_wait(dev, cmd, param, timeout);
 304         return mlx4_comm_cmd_poll(dev, cmd, param, timeout);
 305 }
 306
 307 static int cmd_pending(struct mlx4_dev *dev)
 308 {
 309         u32 status;
 310
 311         if (pci_channel_offline(dev->pdev))
 312                 return -EIO;
 313
 314         status = readl(mlx4_priv(dev)->cmd.hcr + HCR_STATUS_OFFSET);
 315
 316         return (status & swab32(1 << HCR_GO_BIT)) ||
 317                 (mlx4_priv(dev)->cmd.toggle ==
 318                  !!(status & swab32(1 << HCR_T_BIT)));
 319 }
 320
 321 static int mlx4_cmd_post(struct mlx4_dev *dev, u64 in_param, u64 out_param,
 322                          u32 in_modifier, u8 op_modifier, u16 op, u16 token,
 323                          int event)
 324 {
 325         struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
 326         u32 __iomem *hcr = cmd->hcr;
 327         int ret = -EAGAIN;
 328         unsigned long end;
 329
 330         mutex_lock(&cmd->hcr_mutex);
 331
 332         if (pci_channel_offline(dev->pdev)) {
 333                 /*
 334                  * Device is going through error recovery
 335                  * and cannot accept commands.
 336                  */
 337                 ret = -EIO;
 338                 goto out;
 339         }
 340
 341         end = jiffies;
 342         if (event)
 343                 end += msecs_to_jiffies(GO_BIT_TIMEOUT_MSECS);
 344
 345         while (cmd_pending(dev)) {
 346                 if (pci_channel_offline(dev->pdev)) {
 347                         /*
 348                          * Device is going through error recovery
 349                          * and cannot accept commands.
 350                          */
 351                         ret = -EIO;
 352                         goto out;
 353                 }
 354
 355                 if (time_after_eq(jiffies, end)) {
 356                         mlx4_err(dev, "%s:cmd_pending failed\n", __func__);
 357                         goto out;
 358                 }
 359                 cond_resched();
 360         }
 361
 362         /*
 363          * We use writel (instead of something like memcpy_toio)
 364          * because writes of less than 32 bits to the HCR don't work
 365          * (and some architectures such as ia64 implement memcpy_toio
 366          * in terms of writeb).
 367          */
 368         __raw_writel((__force u32) cpu_to_be32(in_param >> 32),           hcr + 0);
 369         __raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful),  hcr + 1);
 370         __raw_writel((__force u32) cpu_to_be32(in_modifier),              hcr + 2);
 371         __raw_writel((__force u32) cpu_to_be32(out_param >> 32),          hcr + 3);
 372         __raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), hcr + 4);
 373         __raw_writel((__force u32) cpu_to_be32(token << 16),              hcr + 5);
 374
 375         /* __raw_writel may not order writes. */
 376         wmb();
 377
 378         __raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT)                |
 379                                                (cmd->toggle << HCR_T_BIT)       |
 380                                                (event ? (1 << HCR_E_BIT) : 0)   |
 381                                                (op_modifier << HCR_OPMOD_SHIFT) |
 382                                                op), hcr + 6);
 383
 384         /*
 385          * Make sure that our HCR writes don't get mixed in with
 386          * writes from another CPU starting a FW command.
 387          */
 388         mmiowb();
 389
 390         cmd->toggle = cmd->toggle ^ 1;
 391
 392         ret = 0;
 393
 394 out:
 395         mutex_unlock(&cmd->hcr_mutex);
 396         return ret;
 397 }
 398
 399 static int mlx4_slave_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
 400                           int out_is_imm, u32 in_modifier, u8 op_modifier,
 401                           u16 op, unsigned long timeout)
 402 {
 403         struct mlx4_priv *priv = mlx4_priv(dev);
 404         struct mlx4_vhcr_cmd *vhcr = priv->mfunc.vhcr;
 405         int ret;
 406
 407         mutex_lock(&priv->cmd.slave_cmd_mutex);
 408
 409         vhcr->in_param = cpu_to_be64(in_param);
 410         vhcr->out_param = out_param ? cpu_to_be64(*out_param) : 0;
 411         vhcr->in_modifier = cpu_to_be32(in_modifier);
 412         vhcr->opcode = cpu_to_be16((((u16) op_modifier) << 12) | (op & 0xfff));
 413         vhcr->token = cpu_to_be16(CMD_POLL_TOKEN);
 414         vhcr->status = 0;
 415         vhcr->flags = !!(priv->cmd.use_events) << 6;
 416
 417         if (mlx4_is_master(dev)) {
 418                 ret = mlx4_master_process_vhcr(dev, dev->caps.function, vhcr);
 419                 if (!ret) {
 420                         if (out_is_imm) {
 421                                 if (out_param)
 422                                         *out_param =
 423                                                 be64_to_cpu(vhcr->out_param);
 424                                 else {
 425                                         mlx4_err(dev, "response expected while"
 426                                                  "output mailbox is NULL for "
 427                                                  "command 0x%x\n", op);
 428                                         vhcr->status = CMD_STAT_BAD_PARAM;
 429                                 }
 430                         }
 431                         ret = mlx4_status_to_errno(vhcr->status);
 432                 }
 433         } else {
 434                 ret = mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_POST, 0,
 435                                     MLX4_COMM_TIME + timeout);
 436                 if (!ret) {
 437                         if (out_is_imm) {
 438                                 if (out_param)
 439                                         *out_param =
 440                                                 be64_to_cpu(vhcr->out_param);
 441                                 else {
 442                                         mlx4_err(dev, "response expected while"
 443                                                  "output mailbox is NULL for "
 444                                                  "command 0x%x\n", op);
 445                                         vhcr->status = CMD_STAT_BAD_PARAM;
 446                                 }
 447                         }
 448                         ret = mlx4_status_to_errno(vhcr->status);
 449                 } else
 450                         mlx4_err(dev, "failed execution of VHCR_POST command"
 451                                  "opcode 0x%x\n", op);
 452         }
 453
 454         mutex_unlock(&priv->cmd.slave_cmd_mutex);
 455         return ret;
 456 }
 457
 458 static int mlx4_cmd_poll(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
 459                          int out_is_imm, u32 in_modifier, u8 op_modifier,
 460                          u16 op, unsigned long timeout)
 461 {
 462         struct mlx4_priv *priv = mlx4_priv(dev);
 463         void __iomem *hcr = priv->cmd.hcr;
 464         int err = 0;
 465         unsigned long end;
 466         u32 stat;
 467
 468         down(&priv->cmd.poll_sem);
 469
 470         if (pci_channel_offline(dev->pdev)) {
 471                 /*
 472                  * Device is going through error recovery
 473                  * and cannot accept commands.
 474                  */
 475                 err = -EIO;
 476                 goto out;
 477         }
 478
 479         err = mlx4_cmd_post(dev, in_param, out_param ? *out_param : 0,
 480                             in_modifier, op_modifier, op, CMD_POLL_TOKEN, 0);
 481         if (err)
 482                 goto out;
 483
 484         end = msecs_to_jiffies(timeout) + jiffies;
 485         while (cmd_pending(dev) && time_before(jiffies, end)) {
 486                 if (pci_channel_offline(dev->pdev)) {
 487                         /*
 488                          * Device is going through error recovery
 489                          * and cannot accept commands.
 490                          */
 491                         err = -EIO;
 492                         goto out;
 493                 }
 494
 495                 cond_resched();
 496         }
 497
 498         if (cmd_pending(dev)) {
 499                 mlx4_warn(dev, "command 0x%x timed out (go bit not cleared)\n",
 500                           op);
 501                 err = -ETIMEDOUT;
 502                 goto out;
 503         }
 504
 505         if (out_is_imm)
 506                 *out_param =
 507                         (u64) be32_to_cpu((__force __be32)
 508                                           __raw_readl(hcr + HCR_OUT_PARAM_OFFSET)) << 32 |
 509                         (u64) be32_to_cpu((__force __be32)
 510                                           __raw_readl(hcr + HCR_OUT_PARAM_OFFSET + 4));
 511         stat = be32_to_cpu((__force __be32)
 512                            __raw_readl(hcr + HCR_STATUS_OFFSET)) >> 24;
 513         err = mlx4_status_to_errno(stat);
 514         if (err)
 515                 mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
 516                          op, stat);
 517
 518 out:
 519         up(&priv->cmd.poll_sem);
 520         return err;
 521 }
 522
 523 void mlx4_cmd_event(struct mlx4_dev *dev, u16 token, u8 status, u64 out_param)
 524 {
 525         struct mlx4_priv *priv = mlx4_priv(dev);
 526         struct mlx4_cmd_context *context =
 527                 &priv->cmd.context[token & priv->cmd.token_mask];
 528
 529         /* previously timed out command completing at long last */
 530         if (token != context->token)
 531                 return;
 532
 533         context->fw_status = status;
 534         context->result    = mlx4_status_to_errno(status);
 535         context->out_param = out_param;
 536
 537         complete(&context->done);
 538 }
 539
 540 static int mlx4_cmd_wait(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
 541                          int out_is_imm, u32 in_modifier, u8 op_modifier,
 542                          u16 op, unsigned long timeout)
 543 {
 544         struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
 545         struct mlx4_cmd_context *context;
 546         int err = 0;
 547
 548         down(&cmd->event_sem);
 549
 550         spin_lock(&cmd->context_lock);
 551         BUG_ON(cmd->free_head < 0);
 552         context = &cmd->context[cmd->free_head];
 553         context->token += cmd->token_mask + 1;
 554         cmd->free_head = context->next;
 555         spin_unlock(&cmd->context_lock);
 556
 557         init_completion(&context->done);
 558
 559         mlx4_cmd_post(dev, in_param, out_param ? *out_param : 0,
 560                       in_modifier, op_modifier, op, context->token, 1);
 561
 562         if (!wait_for_completion_timeout(&context->done,
 563                                          msecs_to_jiffies(timeout))) {
 564                 mlx4_warn(dev, "command 0x%x timed out (go bit not cleared)\n",
 565                           op);
 566                 err = -EBUSY;
 567                 goto out;
 568         }
 569
 570         err = context->result;
 571         if (err) {
 572                 mlx4_err(dev, "command 0x%x failed: fw status = 0x%x\n",
 573                          op, context->fw_status);
 574                 goto out;
 575         }
 576
 577         if (out_is_imm)
 578                 *out_param = context->out_param;
 579
 580 out:
 581         spin_lock(&cmd->context_lock);
 582         context->next = cmd->free_head;
 583         cmd->free_head = context - cmd->context;
 584         spin_unlock(&cmd->context_lock);
 585
 586         up(&cmd->event_sem);
 587         return err;
 588 }
 589
 590 int __mlx4_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
 591                int out_is_imm, u32 in_modifier, u8 op_modifier,
 592                u16 op, unsigned long timeout, int native)
 593 {
 594         if (pci_channel_offline(dev->pdev))
 595                 return -EIO;
 596
 597         if (!mlx4_is_mfunc(dev) || (native && mlx4_is_master(dev))) {
 598                 if (mlx4_priv(dev)->cmd.use_events)
 599                         return mlx4_cmd_wait(dev, in_param, out_param,
 600                                              out_is_imm, in_modifier,
 601                                              op_modifier, op, timeout);
 602                 else
 603                         return mlx4_cmd_poll(dev, in_param, out_param,
 604                                              out_is_imm, in_modifier,
 605                                              op_modifier, op, timeout);
 606         }
 607         return mlx4_slave_cmd(dev, in_param, out_param, out_is_imm,
 608                               in_modifier, op_modifier, op, timeout);
 609 }
 610 EXPORT_SYMBOL_GPL(__mlx4_cmd);
 611
 612
 613 static int mlx4_ARM_COMM_CHANNEL(struct mlx4_dev *dev)
 614 {
 615         return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_ARM_COMM_CHANNEL,
 616                         MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
 617 }
 618
 619 static int mlx4_ACCESS_MEM(struct mlx4_dev *dev, u64 master_addr,
 620                            int slave, u64 slave_addr,
 621                            int size, int is_read)
 622 {
 623         u64 in_param;
 624         u64 out_param;
 625
 626         if ((slave_addr & 0xfff) | (master_addr & 0xfff) |
 627             (slave & ~0x7f) | (size & 0xff)) {
 628                 mlx4_err(dev, "Bad access mem params - slave_addr:0x%llx "
 629                               "master_addr:0x%llx slave_id:%d size:%d\n",
 630                               slave_addr, master_addr, slave, size);
 631                 return -EINVAL;
 632         }
 633
 634         if (is_read) {
 635                 in_param = (u64) slave | slave_addr;
 636                 out_param = (u64) dev->caps.function | master_addr;
 637         } else {
 638                 in_param = (u64) dev->caps.function | master_addr;
 639                 out_param = (u64) slave | slave_addr;
 640         }
 641
 642         return mlx4_cmd_imm(dev, in_param, &out_param, size, 0,
 643                             MLX4_CMD_ACCESS_MEM,
 644                             MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 645 }
 646
 647 static int query_pkey_block(struct mlx4_dev *dev, u8 port, u16 index, u16 *pkey,
 648                                struct mlx4_cmd_mailbox *inbox,
 649                                struct mlx4_cmd_mailbox *outbox)
 650 {
 651         struct ib_smp *in_mad = (struct ib_smp *)(inbox->buf);
 652         struct ib_smp *out_mad = (struct ib_smp *)(outbox->buf);
 653         int err;
 654         int i;
 655
 656         if (index & 0x1f)
 657                 return -EINVAL;
 658
 659         in_mad->attr_mod = cpu_to_be32(index / 32);
 660
 661         err = mlx4_cmd_box(dev, inbox->dma, outbox->dma, port, 3,
 662                            MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C,
 663                            MLX4_CMD_NATIVE);
 664         if (err)
 665                 return err;
 666
 667         for (i = 0; i < 32; ++i)
 668                 pkey[i] = be16_to_cpu(((__be16 *) out_mad->data)[i]);
 669
 670         return err;
 671 }
 672
 673 static int get_full_pkey_table(struct mlx4_dev *dev, u8 port, u16 *table,
 674                                struct mlx4_cmd_mailbox *inbox,
 675                                struct mlx4_cmd_mailbox *outbox)
 676 {
 677         int i;
 678         int err;
 679
 680         for (i = 0; i < dev->caps.pkey_table_len[port]; i += 32) {
 681                 err = query_pkey_block(dev, port, i, table + i, inbox, outbox);
 682                 if (err)
 683                         return err;
 684         }
 685
 686         return 0;
 687 }
 688 #define PORT_CAPABILITY_LOCATION_IN_SMP 20
 689 #define PORT_STATE_OFFSET 32
 690
 691 static enum ib_port_state vf_port_state(struct mlx4_dev *dev, int port, int vf)
 692 {
 693         if (mlx4_get_slave_port_state(dev, vf, port) == SLAVE_PORT_UP)
 694                 return IB_PORT_ACTIVE;
 695         else
 696                 return IB_PORT_DOWN;
 697 }
 698
 699 static int mlx4_MAD_IFC_wrapper(struct mlx4_dev *dev, int slave,
 700                                 struct mlx4_vhcr *vhcr,
 701                                 struct mlx4_cmd_mailbox *inbox,
 702                                 struct mlx4_cmd_mailbox *outbox,
 703                                 struct mlx4_cmd_info *cmd)
 704 {
 705         struct ib_smp *smp = inbox->buf;
 706         u32 index;
 707         u8 port;
 708         u16 *table;
 709         int err;
 710         int vidx, pidx;
 711         struct mlx4_priv *priv = mlx4_priv(dev);
 712         struct ib_smp *outsmp = outbox->buf;
 713         __be16 *outtab = (__be16 *)(outsmp->data);
 714         __be32 slave_cap_mask;
 715         __be64 slave_node_guid;
 716         port = vhcr->in_modifier;
 717
 718         if (smp->base_version == 1 &&
 719             smp->mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED &&
 720             smp->class_version == 1) {
 721                 if (smp->method == IB_MGMT_METHOD_GET) {
 722                         if (smp->attr_id == IB_SMP_ATTR_PKEY_TABLE) {
 723                                 index = be32_to_cpu(smp->attr_mod);
 724                                 if (port < 1 || port > dev->caps.num_ports)
 725                                         return -EINVAL;
 726                                 table = kcalloc(dev->caps.pkey_table_len[port], sizeof *table, GFP_KERNEL);
 727                                 if (!table)
 728                                         return -ENOMEM;
 729                                 /* need to get the full pkey table because the paravirtualized
 730                                  * pkeys may be scattered among several pkey blocks.
 731                                  */
 732                                 err = get_full_pkey_table(dev, port, table, inbox, outbox);
 733                                 if (!err) {
 734                                         for (vidx = index * 32; vidx < (index + 1) * 32; ++vidx) {
 735                                                 pidx = priv->virt2phys_pkey[slave][port - 1][vidx];
 736                                                 outtab[vidx % 32] = cpu_to_be16(table[pidx]);
 737                                         }
 738                                 }
 739                                 kfree(table);
 740                                 return err;
 741                         }
 742                         if (smp->attr_id == IB_SMP_ATTR_PORT_INFO) {
 743                                 /*get the slave specific caps:*/
 744                                 /*do the command */
 745                                 err = mlx4_cmd_box(dev, inbox->dma, outbox->dma,
 746                                             vhcr->in_modifier, vhcr->op_modifier,
 747                                             vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
 748                                 /* modify the response for slaves */
 749                                 if (!err && slave != mlx4_master_func_num(dev)) {
 750                                         u8 *state = outsmp->data + PORT_STATE_OFFSET;
 751
 752                                         *state = (*state & 0xf0) | vf_port_state(dev, port, slave);
 753                                         slave_cap_mask = priv->mfunc.master.slave_state[slave].ib_cap_mask[port];
 754                                         memcpy(outsmp->data + PORT_CAPABILITY_LOCATION_IN_SMP, &slave_cap_mask, 4);
 755                                 }
 756                                 return err;
 757                         }
 758                         if (smp->attr_id == IB_SMP_ATTR_GUID_INFO) {
 759                                 /* compute slave's gid block */
 760                                 smp->attr_mod = cpu_to_be32(slave / 8);
 761                                 /* execute cmd */
 762                                 err = mlx4_cmd_box(dev, inbox->dma, outbox->dma,
 763                                              vhcr->in_modifier, vhcr->op_modifier,
 764                                              vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
 765                                 if (!err) {
 766                                         /* if needed, move slave gid to index 0 */
 767                                         if (slave % 8)
 768                                                 memcpy(outsmp->data,
 769                                                        outsmp->data + (slave % 8) * 8, 8);
 770                                         /* delete all other gids */
 771                                         memset(outsmp->data + 8, 0, 56);
 772                                 }
 773                                 return err;
 774                         }
 775                         if (smp->attr_id == IB_SMP_ATTR_NODE_INFO) {
 776                                 err = mlx4_cmd_box(dev, inbox->dma, outbox->dma,
 777                                              vhcr->in_modifier, vhcr->op_modifier,
 778                                              vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
 779                                 if (!err) {
 780                                         slave_node_guid =  mlx4_get_slave_node_guid(dev, slave);
 781                                         memcpy(outsmp->data + 12, &slave_node_guid, 8);
 782                                 }
 783                                 return err;
 784                         }
 785                 }
 786         }
 787         if (slave != mlx4_master_func_num(dev) &&
 788             ((smp->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) ||
 789              (smp->mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED &&
 790               smp->method == IB_MGMT_METHOD_SET))) {
 791                 mlx4_err(dev, "slave %d is trying to execute a Subnet MGMT MAD, "
 792                          "class 0x%x, method 0x%x for attr 0x%x. Rejecting\n",
 793                          slave, smp->method, smp->mgmt_class,
 794                          be16_to_cpu(smp->attr_id));
 795                 return -EPERM;
 796         }
 797         /*default:*/
 798         return mlx4_cmd_box(dev, inbox->dma, outbox->dma,
 799                                     vhcr->in_modifier, vhcr->op_modifier,
 800                                     vhcr->op, MLX4_CMD_TIME_CLASS_C, MLX4_CMD_NATIVE);
 801 }
 802
 803 static int MLX4_CMD_UPDATE_QP_wrapper(struct mlx4_dev *dev, int slave,
 804                      struct mlx4_vhcr *vhcr,
 805                      struct mlx4_cmd_mailbox *inbox,
 806                      struct mlx4_cmd_mailbox *outbox,
 807                      struct mlx4_cmd_info *cmd)
 808 {
 809         return -EPERM;
 810 }
 811
 812 static int MLX4_CMD_GET_OP_REQ_wrapper(struct mlx4_dev *dev, int slave,
 813                      struct mlx4_vhcr *vhcr,
 814                      struct mlx4_cmd_mailbox *inbox,
 815                      struct mlx4_cmd_mailbox *outbox,
 816                      struct mlx4_cmd_info *cmd)
 817 {
 818         return -EPERM;
 819 }
 820
 821 int mlx4_DMA_wrapper(struct mlx4_dev *dev, int slave,
 822                      struct mlx4_vhcr *vhcr,
 823                      struct mlx4_cmd_mailbox *inbox,
 824                      struct mlx4_cmd_mailbox *outbox,
 825                      struct mlx4_cmd_info *cmd)
 826 {
 827         u64 in_param;
 828         u64 out_param;
 829         int err;
 830
 831         in_param = cmd->has_inbox ? (u64) inbox->dma : vhcr->in_param;
 832         out_param = cmd->has_outbox ? (u64) outbox->dma : vhcr->out_param;
 833         if (cmd->encode_slave_id) {
 834                 in_param &= 0xffffffffffffff00ll;
 835                 in_param |= slave;
 836         }
 837
 838         err = __mlx4_cmd(dev, in_param, &out_param, cmd->out_is_imm,
 839                          vhcr->in_modifier, vhcr->op_modifier, vhcr->op,
 840                          MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE);
 841
 842         if (cmd->out_is_imm)
 843                 vhcr->out_param = out_param;
 844
 845         return err;
 846 }
 847
 848 static struct mlx4_cmd_info cmd_info[] = {
 849         {
 850                 .opcode = MLX4_CMD_QUERY_FW,
 851                 .has_inbox = false,
 852                 .has_outbox = true,
 853                 .out_is_imm = false,
 854                 .encode_slave_id = false,
 855                 .verify = NULL,
 856                 .wrapper = mlx4_QUERY_FW_wrapper
 857         },
 858         {
 859                 .opcode = MLX4_CMD_QUERY_HCA,
 860                 .has_inbox = false,
 861                 .has_outbox = true,
 862                 .out_is_imm = false,
 863                 .encode_slave_id = false,
 864                 .verify = NULL,
 865                 .wrapper = NULL
 866         },
 867         {
 868                 .opcode = MLX4_CMD_QUERY_DEV_CAP,
 869                 .has_inbox = false,
 870                 .has_outbox = true,
 871                 .out_is_imm = false,
 872                 .encode_slave_id = false,
 873                 .verify = NULL,
 874                 .wrapper = mlx4_QUERY_DEV_CAP_wrapper
 875         },
 876         {
 877                 .opcode = MLX4_CMD_QUERY_FUNC_CAP,
 878                 .has_inbox = false,
 879                 .has_outbox = true,
 880                 .out_is_imm = false,
 881                 .encode_slave_id = false,
 882                 .verify = NULL,
 883                 .wrapper = mlx4_QUERY_FUNC_CAP_wrapper
 884         },
 885         {
 886                 .opcode = MLX4_CMD_QUERY_ADAPTER,
 887                 .has_inbox = false,
 888                 .has_outbox = true,
 889                 .out_is_imm = false,
 890                 .encode_slave_id = false,
 891                 .verify = NULL,
 892                 .wrapper = NULL
 893         },
 894         {
 895                 .opcode = MLX4_CMD_INIT_PORT,
 896                 .has_inbox = false,
 897                 .has_outbox = false,
 898                 .out_is_imm = false,
 899                 .encode_slave_id = false,
 900                 .verify = NULL,
 901                 .wrapper = mlx4_INIT_PORT_wrapper
 902         },
 903         {
 904                 .opcode = MLX4_CMD_CLOSE_PORT,
 905                 .has_inbox = false,
 906                 .has_outbox = false,
 907                 .out_is_imm  = false,
 908                 .encode_slave_id = false,
 909                 .verify = NULL,
 910                 .wrapper = mlx4_CLOSE_PORT_wrapper
 911         },
 912         {
 913                 .opcode = MLX4_CMD_QUERY_PORT,
 914                 .has_inbox = false,
 915                 .has_outbox = true,
 916                 .out_is_imm = false,
 917                 .encode_slave_id = false,
 918                 .verify = NULL,
 919                 .wrapper = mlx4_QUERY_PORT_wrapper
 920         },
 921         {
 922                 .opcode = MLX4_CMD_SET_PORT,
 923                 .has_inbox = true,
 924                 .has_outbox = false,
 925                 .out_is_imm = false,
 926                 .encode_slave_id = false,
 927                 .verify = NULL,
 928                 .wrapper = mlx4_SET_PORT_wrapper
 929         },
 930         {
 931                 .opcode = MLX4_CMD_MAP_EQ,
 932                 .has_inbox = false,
 933                 .has_outbox = false,
 934                 .out_is_imm = false,
 935                 .encode_slave_id = false,
 936                 .verify = NULL,
 937                 .wrapper = mlx4_MAP_EQ_wrapper
 938         },
 939         {
 940                 .opcode = MLX4_CMD_SW2HW_EQ,
 941                 .has_inbox = true,
 942                 .has_outbox = false,
 943                 .out_is_imm = false,
 944                 .encode_slave_id = true,
 945                 .verify = NULL,
 946                 .wrapper = mlx4_SW2HW_EQ_wrapper
 947         },
 948         {
 949                 .opcode = MLX4_CMD_HW_HEALTH_CHECK,
 950                 .has_inbox = false,
 951                 .has_outbox = false,
 952                 .out_is_imm = false,
 953                 .encode_slave_id = false,
 954                 .verify = NULL,
 955                 .wrapper = NULL
 956         },
 957         {
 958                 .opcode = MLX4_CMD_NOP,
 959                 .has_inbox = false,
 960                 .has_outbox = false,
 961                 .out_is_imm = false,
 962                 .encode_slave_id = false,
 963                 .verify = NULL,
 964                 .wrapper = NULL
 965         },
 966         {
 967                 .opcode = MLX4_CMD_ALLOC_RES,
 968                 .has_inbox = false,
 969                 .has_outbox = false,
 970                 .out_is_imm = true,
 971                 .encode_slave_id = false,
 972                 .verify = NULL,
 973                 .wrapper = mlx4_ALLOC_RES_wrapper
 974         },
 975         {
 976                 .opcode = MLX4_CMD_FREE_RES,
 977                 .has_inbox = false,
 978                 .has_outbox = false,
 979                 .out_is_imm = false,
 980                 .encode_slave_id = false,
 981                 .verify = NULL,
 982                 .wrapper = mlx4_FREE_RES_wrapper
 983         },
 984         {
 985                 .opcode = MLX4_CMD_SW2HW_MPT,
 986                 .has_inbox = true,
 987                 .has_outbox = false,
 988                 .out_is_imm = false,
 989                 .encode_slave_id = true,
 990                 .verify = NULL,
 991                 .wrapper = mlx4_SW2HW_MPT_wrapper
 992         },
 993         {
 994                 .opcode = MLX4_CMD_QUERY_MPT,
 995                 .has_inbox = false,
 996                 .has_outbox = true,
 997                 .out_is_imm = false,
 998                 .encode_slave_id = false,
 999                 .verify = NULL,
1000                 .wrapper = mlx4_QUERY_MPT_wrapper
1001         },
1002         {
1003                 .opcode = MLX4_CMD_HW2SW_MPT,
1004                 .has_inbox = false,
1005                 .has_outbox = false,
1006                 .out_is_imm = false,
1007                 .encode_slave_id = false,
1008                 .verify = NULL,
1009                 .wrapper = mlx4_HW2SW_MPT_wrapper
1010         },
1011         {
1012                 .opcode = MLX4_CMD_READ_MTT,
1013                 .has_inbox = false,
1014                 .has_outbox = true,
1015                 .out_is_imm = false,
1016                 .encode_slave_id = false,
1017                 .verify = NULL,
1018                 .wrapper = NULL
1019         },
1020         {
1021                 .opcode = MLX4_CMD_WRITE_MTT,
1022                 .has_inbox = true,
1023                 .has_outbox = false,
1024                 .out_is_imm = false,
1025                 .encode_slave_id = false,
1026                 .verify = NULL,
1027                 .wrapper = mlx4_WRITE_MTT_wrapper
1028         },
1029         {
1030                 .opcode = MLX4_CMD_SYNC_TPT,
1031                 .has_inbox = true,
1032                 .has_outbox = false,
1033                 .out_is_imm = false,
1034                 .encode_slave_id = false,
1035                 .verify = NULL,
1036                 .wrapper = NULL
1037         },
1038         {
1039                 .opcode = MLX4_CMD_HW2SW_EQ,
1040                 .has_inbox = false,
1041                 .has_outbox = true,
1042                 .out_is_imm = false,
1043                 .encode_slave_id = true,
1044                 .verify = NULL,
1045                 .wrapper = mlx4_HW2SW_EQ_wrapper
1046         },
1047         {
1048                 .opcode = MLX4_CMD_QUERY_EQ,
1049                 .has_inbox = false,
1050                 .has_outbox = true,
1051                 .out_is_imm = false,
1052                 .encode_slave_id = true,
1053                 .verify = NULL,
1054                 .wrapper = mlx4_QUERY_EQ_wrapper
1055         },
1056         {
1057                 .opcode = MLX4_CMD_SW2HW_CQ,
1058                 .has_inbox = true,
1059                 .has_outbox = false,
1060                 .out_is_imm = false,
1061                 .encode_slave_id = true,
1062                 .verify = NULL,
1063                 .wrapper = mlx4_SW2HW_CQ_wrapper
1064         },
1065         {
1066                 .opcode = MLX4_CMD_HW2SW_CQ,
1067                 .has_inbox = false,
1068                 .has_outbox = false,
1069                 .out_is_imm = false,
1070                 .encode_slave_id = false,
1071                 .verify = NULL,
1072                 .wrapper = mlx4_HW2SW_CQ_wrapper
1073         },
1074         {
1075                 .opcode = MLX4_CMD_QUERY_CQ,
1076                 .has_inbox = false,
1077                 .has_outbox = true,
1078                 .out_is_imm = false,
1079                 .encode_slave_id = false,
1080                 .verify = NULL,
1081                 .wrapper = mlx4_QUERY_CQ_wrapper
1082         },
1083         {
1084                 .opcode = MLX4_CMD_MODIFY_CQ,
1085                 .has_inbox = true,
1086                 .has_outbox = false,
1087                 .out_is_imm = true,
1088                 .encode_slave_id = false,
1089                 .verify = NULL,
1090                 .wrapper = mlx4_MODIFY_CQ_wrapper
1091         },
1092         {
1093                 .opcode = MLX4_CMD_SW2HW_SRQ,
1094                 .has_inbox = true,
1095                 .has_outbox = false,
1096                 .out_is_imm = false,
1097                 .encode_slave_id = true,
1098                 .verify = NULL,
1099                 .wrapper = mlx4_SW2HW_SRQ_wrapper
1100         },
1101         {
1102                 .opcode = MLX4_CMD_HW2SW_SRQ,
1103                 .has_inbox = false,
1104                 .has_outbox = false,
1105                 .out_is_imm = false,
1106                 .encode_slave_id = false,
1107                 .verify = NULL,
1108                 .wrapper = mlx4_HW2SW_SRQ_wrapper
1109         },
1110         {
1111                 .opcode = MLX4_CMD_QUERY_SRQ,
1112                 .has_inbox = false,
1113                 .has_outbox = true,
1114                 .out_is_imm = false,
1115                 .encode_slave_id = false,
1116                 .verify = NULL,
1117                 .wrapper = mlx4_QUERY_SRQ_wrapper
1118         },
1119         {
1120                 .opcode = MLX4_CMD_ARM_SRQ,
1121                 .has_inbox = false,
1122                 .has_outbox = false,
1123                 .out_is_imm = false,
1124                 .encode_slave_id = false,
1125                 .verify = NULL,
1126                 .wrapper = mlx4_ARM_SRQ_wrapper
1127         },
1128         {
1129                 .opcode = MLX4_CMD_RST2INIT_QP,
1130                 .has_inbox = true,
1131                 .has_outbox = false,
1132                 .out_is_imm = false,
1133                 .encode_slave_id = true,
1134                 .verify = NULL,
1135                 .wrapper = mlx4_RST2INIT_QP_wrapper
1136         },
1137         {
1138                 .opcode = MLX4_CMD_INIT2INIT_QP,
1139                 .has_inbox = true,
1140                 .has_outbox = false,
1141                 .out_is_imm = false,
1142                 .encode_slave_id = false,
1143                 .verify = NULL,
1144                 .wrapper = mlx4_INIT2INIT_QP_wrapper
1145         },
1146         {
1147                 .opcode = MLX4_CMD_INIT2RTR_QP,
1148                 .has_inbox = true,
1149                 .has_outbox = false,
1150                 .out_is_imm = false,
1151                 .encode_slave_id = false,
1152                 .verify = NULL,
1153                 .wrapper = mlx4_INIT2RTR_QP_wrapper
1154         },
1155         {
1156                 .opcode = MLX4_CMD_RTR2RTS_QP,
1157                 .has_inbox = true,
1158                 .has_outbox = false,
1159                 .out_is_imm = false,
1160                 .encode_slave_id = false,
1161                 .verify = NULL,
1162                 .wrapper = mlx4_RTR2RTS_QP_wrapper
1163         },
1164         {
1165                 .opcode = MLX4_CMD_RTS2RTS_QP,
1166                 .has_inbox = true,
1167                 .has_outbox = false,
1168                 .out_is_imm = false,
1169                 .encode_slave_id = false,
1170                 .verify = NULL,
1171                 .wrapper = mlx4_RTS2RTS_QP_wrapper
1172         },
1173         {
1174                 .opcode = MLX4_CMD_SQERR2RTS_QP,
1175                 .has_inbox = true,
1176                 .has_outbox = false,
1177                 .out_is_imm = false,
1178                 .encode_slave_id = false,
1179                 .verify = NULL,
1180                 .wrapper = mlx4_SQERR2RTS_QP_wrapper
1181         },
1182         {
1183                 .opcode = MLX4_CMD_2ERR_QP,
1184                 .has_inbox = false,
1185                 .has_outbox = false,
1186                 .out_is_imm = false,
1187                 .encode_slave_id = false,
1188                 .verify = NULL,
1189                 .wrapper = mlx4_GEN_QP_wrapper
1190         },
1191         {
1192                 .opcode = MLX4_CMD_RTS2SQD_QP,
1193                 .has_inbox = false,
1194                 .has_outbox = false,
1195                 .out_is_imm = false,
1196                 .encode_slave_id = false,
1197                 .verify = NULL,
1198                 .wrapper = mlx4_GEN_QP_wrapper
1199         },
1200         {
1201                 .opcode = MLX4_CMD_SQD2SQD_QP,
1202                 .has_inbox = true,
1203                 .has_outbox = false,
1204                 .out_is_imm = false,
1205                 .encode_slave_id = false,
1206                 .verify = NULL,
1207                 .wrapper = mlx4_SQD2SQD_QP_wrapper
1208         },
1209         {
1210                 .opcode = MLX4_CMD_SQD2RTS_QP,
1211                 .has_inbox = true,
1212                 .has_outbox = false,
1213                 .out_is_imm = false,
1214                 .encode_slave_id = false,
1215                 .verify = NULL,
1216                 .wrapper = mlx4_SQD2RTS_QP_wrapper
1217         },
1218         {
1219                 .opcode = MLX4_CMD_2RST_QP,
1220                 .has_inbox = false,
1221                 .has_outbox = false,
1222                 .out_is_imm = false,
1223                 .encode_slave_id = false,
1224                 .verify = NULL,
1225                 .wrapper = mlx4_2RST_QP_wrapper
1226         },
1227         {
1228                 .opcode = MLX4_CMD_QUERY_QP,
1229                 .has_inbox = false,
1230                 .has_outbox = true,
1231                 .out_is_imm = false,
1232                 .encode_slave_id = false,
1233                 .verify = NULL,
1234                 .wrapper = mlx4_GEN_QP_wrapper
1235         },
1236         {
1237                 .opcode = MLX4_CMD_SUSPEND_QP,
1238                 .has_inbox = false,
1239                 .has_outbox = false,
1240                 .out_is_imm = false,
1241                 .encode_slave_id = false,
1242                 .verify = NULL,
1243                 .wrapper = mlx4_GEN_QP_wrapper
1244         },
1245         {
1246                 .opcode = MLX4_CMD_UNSUSPEND_QP,
1247                 .has_inbox = false,
1248                 .has_outbox = false,
1249                 .out_is_imm = false,
1250                 .encode_slave_id = false,
1251                 .verify = NULL,
1252                 .wrapper = mlx4_GEN_QP_wrapper
1253         },
1254         {
1255                 .opcode = MLX4_CMD_UPDATE_QP,
1256                 .has_inbox = false,
1257                 .has_outbox = false,
1258                 .out_is_imm = false,
1259                 .encode_slave_id = false,
1260                 .verify = NULL,
1261                 .wrapper = MLX4_CMD_UPDATE_QP_wrapper
1262         },
1263         {
1264                 .opcode = MLX4_CMD_GET_OP_REQ,
1265                 .has_inbox = false,
1266                 .has_outbox = false,
1267                 .out_is_imm = false,
1268                 .encode_slave_id = false,
1269                 .verify = NULL,
1270                 .wrapper = MLX4_CMD_GET_OP_REQ_wrapper,
1271         },
1272         {
1273                 .opcode = MLX4_CMD_CONF_SPECIAL_QP,
1274                 .has_inbox = false,
1275                 .has_outbox = false,
1276                 .out_is_imm = false,
1277                 .encode_slave_id = false,
1278                 .verify = NULL, /* XXX verify: only demux can do this */
1279                 .wrapper = NULL
1280         },
1281         {
1282                 .opcode = MLX4_CMD_MAD_IFC,
1283                 .has_inbox = true,
1284                 .has_outbox = true,
1285                 .out_is_imm = false,
1286                 .encode_slave_id = false,
1287                 .verify = NULL,
1288                 .wrapper = mlx4_MAD_IFC_wrapper
1289         },
1290         {
1291                 .opcode = MLX4_CMD_QUERY_IF_STAT,
1292                 .has_inbox = false,
1293                 .has_outbox = true,
1294                 .out_is_imm = false,
1295                 .encode_slave_id = false,
1296                 .verify = NULL,
1297                 .wrapper = mlx4_QUERY_IF_STAT_wrapper
1298         },
1299         /* Native multicast commands are not available for guests */
1300         {
1301                 .opcode = MLX4_CMD_QP_ATTACH,
1302                 .has_inbox = true,
1303                 .has_outbox = false,
1304                 .out_is_imm = false,
1305                 .encode_slave_id = false,
1306                 .verify = NULL,
1307                 .wrapper = mlx4_QP_ATTACH_wrapper
1308         },
1309         {
1310                 .opcode = MLX4_CMD_PROMISC,
1311                 .has_inbox = false,
1312                 .has_outbox = false,
1313                 .out_is_imm = false,
1314                 .encode_slave_id = false,
1315                 .verify = NULL,
1316                 .wrapper = mlx4_PROMISC_wrapper
1317         },
1318         /* Ethernet specific commands */
1319         {
1320                 .opcode = MLX4_CMD_SET_VLAN_FLTR,
1321                 .has_inbox = true,
1322                 .has_outbox = false,
1323                 .out_is_imm = false,
1324                 .encode_slave_id = false,
1325                 .verify = NULL,
1326                 .wrapper = mlx4_SET_VLAN_FLTR_wrapper
1327         },
1328         {
1329                 .opcode = MLX4_CMD_SET_MCAST_FLTR,
1330                 .has_inbox = false,
1331                 .has_outbox = false,
1332                 .out_is_imm = false,
1333                 .encode_slave_id = false,
1334                 .verify = NULL,
1335                 .wrapper = mlx4_SET_MCAST_FLTR_wrapper
1336         },
1337         {
1338                 .opcode = MLX4_CMD_DUMP_ETH_STATS,
1339                 .has_inbox = false,
1340                 .has_outbox = true,
1341                 .out_is_imm = false,
1342                 .encode_slave_id = false,
1343                 .verify = NULL,
1344                 .wrapper = mlx4_DUMP_ETH_STATS_wrapper
1345         },
1346         {
1347                 .opcode = MLX4_CMD_INFORM_FLR_DONE,
1348                 .has_inbox = false,
1349                 .has_outbox = false,
1350                 .out_is_imm = false,
1351                 .encode_slave_id = false,
1352                 .verify = NULL,
1353                 .wrapper = NULL
1354         },
1355         /* flow steering commands */
1356         {
1357                 .opcode = MLX4_QP_FLOW_STEERING_ATTACH,
1358                 .has_inbox = true,
1359                 .has_outbox = false,
1360                 .out_is_imm = true,
1361                 .encode_slave_id = false,
1362                 .verify = NULL,
1363                 .wrapper = mlx4_QP_FLOW_STEERING_ATTACH_wrapper
1364         },
1365         {
1366                 .opcode = MLX4_QP_FLOW_STEERING_DETACH,
1367                 .has_inbox = false,
1368                 .has_outbox = false,
1369                 .out_is_imm = false,
1370                 .encode_slave_id = false,
1371                 .verify = NULL,
1372                 .wrapper = mlx4_QP_FLOW_STEERING_DETACH_wrapper
1373         },
1374 };
1375
1376 static int mlx4_master_process_vhcr(struct mlx4_dev *dev, int slave,
1377                                     struct mlx4_vhcr_cmd *in_vhcr)
1378 {
1379         struct mlx4_priv *priv = mlx4_priv(dev);
1380         struct mlx4_cmd_info *cmd = NULL;
1381         struct mlx4_vhcr_cmd *vhcr_cmd = in_vhcr ? in_vhcr : priv->mfunc.vhcr;
1382         struct mlx4_vhcr *vhcr;
1383         struct mlx4_cmd_mailbox *inbox = NULL;
1384         struct mlx4_cmd_mailbox *outbox = NULL;
1385         u64 in_param;
1386         u64 out_param;
1387         int ret = 0;
1388         int i;
1389         int err = 0;
1390
1391         /* Create sw representation of Virtual HCR */
1392         vhcr = kzalloc(sizeof(struct mlx4_vhcr), GFP_KERNEL);
1393         if (!vhcr)
1394                 return -ENOMEM;
1395
1396         /* DMA in the vHCR */
1397         if (!in_vhcr) {
1398                 ret = mlx4_ACCESS_MEM(dev, priv->mfunc.vhcr_dma, slave,
1399                                       priv->mfunc.master.slave_state[slave].vhcr_dma,
1400                                       ALIGN(sizeof(struct mlx4_vhcr_cmd),
1401                                             MLX4_ACCESS_MEM_ALIGN), 1);
1402                 if (ret) {
1403                         mlx4_err(dev, "%s:Failed reading vhcr"
1404                                  "ret: 0x%x\n", __func__, ret);
1405                         kfree(vhcr);
1406                         return ret;
1407                 }
1408         }
1409
1410         /* Fill SW VHCR fields */
1411         vhcr->in_param = be64_to_cpu(vhcr_cmd->in_param);
1412         vhcr->out_param = be64_to_cpu(vhcr_cmd->out_param);
1413         vhcr->in_modifier = be32_to_cpu(vhcr_cmd->in_modifier);
1414         vhcr->token = be16_to_cpu(vhcr_cmd->token);
1415         vhcr->op = be16_to_cpu(vhcr_cmd->opcode) & 0xfff;
1416         vhcr->op_modifier = (u8) (be16_to_cpu(vhcr_cmd->opcode) >> 12);
1417         vhcr->e_bit = vhcr_cmd->flags & (1 << 6);
1418
1419         /* Lookup command */
1420         for (i = 0; i < ARRAY_SIZE(cmd_info); ++i) {
1421                 if (vhcr->op == cmd_info[i].opcode) {
1422                         cmd = &cmd_info[i];
1423                         break;
1424                 }
1425         }
1426         if (!cmd) {
1427                 mlx4_err(dev, "Unknown command:0x%x accepted from slave:%d\n",
1428                          vhcr->op, slave);
1429                 vhcr_cmd->status = CMD_STAT_BAD_PARAM;
1430                 goto out_status;
1431         }
1432
1433         /* Read inbox */
1434         if (cmd->has_inbox) {
1435                 vhcr->in_param &= INBOX_MASK;
1436                 inbox = mlx4_alloc_cmd_mailbox(dev);
1437                 if (IS_ERR(inbox)) {
1438                         vhcr_cmd->status = CMD_STAT_BAD_SIZE;
1439                         inbox = NULL;
1440                         goto out_status;
1441                 }
1442
1443                 if (mlx4_ACCESS_MEM(dev, inbox->dma, slave,
1444                                     vhcr->in_param,
1445                                     MLX4_MAILBOX_SIZE, 1)) {
1446                         mlx4_err(dev, "%s: Failed reading inbox (cmd:0x%x)\n",
1447                                  __func__, cmd->opcode);
1448                         vhcr_cmd->status = CMD_STAT_INTERNAL_ERR;
1449                         goto out_status;
1450                 }
1451         }
1452
1453         /* Apply permission and bound checks if applicable */
1454         if (cmd->verify && cmd->verify(dev, slave, vhcr, inbox)) {
1455                 mlx4_warn(dev, "Command:0x%x from slave: %d failed protection "
1456                           "checks for resource_id:%d\n", vhcr->op, slave,
1457                           vhcr->in_modifier);
1458                 vhcr_cmd->status = CMD_STAT_BAD_OP;
1459                 goto out_status;
1460         }
1461
1462         /* Allocate outbox */
1463         if (cmd->has_outbox) {
1464                 outbox = mlx4_alloc_cmd_mailbox(dev);
1465                 if (IS_ERR(outbox)) {
1466                         vhcr_cmd->status = CMD_STAT_BAD_SIZE;
1467                         outbox = NULL;
1468                         goto out_status;
1469                 }
1470         }
1471
1472         /* Execute the command! */
1473         if (cmd->wrapper) {
1474                 err = cmd->wrapper(dev, slave, vhcr, inbox, outbox,
1475                                    cmd);
1476                 if (cmd->out_is_imm)
1477                         vhcr_cmd->out_param = cpu_to_be64(vhcr->out_param);
1478         } else {
1479                 in_param = cmd->has_inbox ? (u64) inbox->dma :
1480                         vhcr->in_param;
1481                 out_param = cmd->has_outbox ? (u64) outbox->dma :
1482                         vhcr->out_param;
1483                 err = __mlx4_cmd(dev, in_param, &out_param,
1484                                  cmd->out_is_imm, vhcr->in_modifier,
1485                                  vhcr->op_modifier, vhcr->op,
1486                                  MLX4_CMD_TIME_CLASS_A,
1487                                  MLX4_CMD_NATIVE);
1488
1489                 if (cmd->out_is_imm) {
1490                         vhcr->out_param = out_param;
1491                         vhcr_cmd->out_param = cpu_to_be64(vhcr->out_param);
1492                 }
1493         }
1494
1495         if (err) {
1496                 mlx4_warn(dev, "vhcr command:0x%x slave:%d failed with"
1497                           " error:%d, status %d\n",
1498                           vhcr->op, slave, vhcr->errno, err);
1499                 vhcr_cmd->status = mlx4_errno_to_status(err);
1500                 goto out_status;
1501         }
1502
1503
1504         /* Write outbox if command completed successfully */
1505         if (cmd->has_outbox && !vhcr_cmd->status) {
1506                 ret = mlx4_ACCESS_MEM(dev, outbox->dma, slave,
1507                                       vhcr->out_param,
1508                                       MLX4_MAILBOX_SIZE, MLX4_CMD_WRAPPED);
1509                 if (ret) {
1510                         /* If we failed to write back the outbox after the
1511                          *command was successfully executed, we must fail this
1512                          * slave, as it is now in undefined state */
1513                         mlx4_err(dev, "%s:Failed writing outbox\n", __func__);
1514                         goto out;
1515                 }
1516         }
1517
1518 out_status:
1519         /* DMA back vhcr result */
1520         if (!in_vhcr) {
1521                 ret = mlx4_ACCESS_MEM(dev, priv->mfunc.vhcr_dma, slave,
1522                                       priv->mfunc.master.slave_state[slave].vhcr_dma,
1523                                       ALIGN(sizeof(struct mlx4_vhcr),
1524                                             MLX4_ACCESS_MEM_ALIGN),
1525                                       MLX4_CMD_WRAPPED);
1526                 if (ret)
1527                         mlx4_err(dev, "%s:Failed writing vhcr result\n",
1528                                  __func__);
1529                 else if (vhcr->e_bit &&
1530                          mlx4_GEN_EQE(dev, slave, &priv->mfunc.master.cmd_eqe))
1531                                 mlx4_warn(dev, "Failed to generate command completion "
1532                                           "eqe for slave %d\n", slave);
1533         }
1534
1535 out:
1536         kfree(vhcr);
1537         mlx4_free_cmd_mailbox(dev, inbox);
1538         mlx4_free_cmd_mailbox(dev, outbox);
1539         return ret;
1540 }
1541
1542 static int calculate_transition(u16 oper_vlan, u16 admin_vlan)
1543 {
1544         return (2 * (oper_vlan == MLX4_VGT) + (admin_vlan == MLX4_VGT));
1545 }
1546
1547 static int mlx4_master_immediate_activate_vlan_qos(struct mlx4_priv *priv,
1548                                             int slave, int port)
1549 {
1550         struct mlx4_vport_oper_state *vp_oper;
1551         struct mlx4_vport_state *vp_admin;
1552         struct mlx4_vf_immed_vlan_work *work;
1553         struct mlx4_dev *dev = &(priv->dev);
1554         int err;
1555         int admin_vlan_ix = NO_INDX;
1556         enum mlx4_vlan_transition vlan_trans;
1557
1558         vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
1559         vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
1560
1561         if (vp_oper->state.default_vlan == vp_admin->default_vlan &&
1562             vp_oper->state.default_qos == vp_admin->default_qos &&
1563             vp_oper->state.link_state == vp_admin->link_state)
1564                 return 0;
1565
1566         vlan_trans = calculate_transition(vp_oper->state.default_vlan,
1567                                           vp_admin->default_vlan);
1568
1569         if (!(priv->mfunc.master.slave_state[slave].active &&
1570               dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_UPDATE_QP &&
1571               vlan_trans == MLX4_VLAN_TRANSITION_VST_VST)) {
1572                 /* even if the UPDATE_QP command isn't supported, we still want
1573                  * to set this VF link according to the admin directive
1574                  */
1575                 vp_oper->state.link_state = vp_admin->link_state;
1576                 return -1;
1577         }
1578
1579         mlx4_dbg(dev, "updating immediately admin params slave %d port %d\n",
1580                  slave, port);
1581         mlx4_dbg(dev, "vlan %d QoS %d link down %d\n", vp_admin->default_vlan,
1582                  vp_admin->default_qos, vp_admin->link_state);
1583
1584         work = kzalloc(sizeof(*work), GFP_KERNEL);
1585         if (!work)
1586                 return -ENOMEM;
1587
1588         if (vp_oper->state.default_vlan != vp_admin->default_vlan) {
1589                 err = __mlx4_register_vlan(&priv->dev, port,
1590                                            vp_admin->default_vlan,
1591                                            &admin_vlan_ix);
1592                 if (err) {
1593                         kfree(work);
1594                         mlx4_warn((&priv->dev),
1595                                   "No vlan resources slave %d, port %d\n",
1596                                   slave, port);
1597                         return err;
1598                 }
1599                 work->flags |= MLX4_VF_IMMED_VLAN_FLAG_VLAN;
1600                 mlx4_dbg((&(priv->dev)),
1601                          "alloc vlan %d idx  %d slave %d port %d\n",
1602                          (int)(vp_admin->default_vlan),
1603                          admin_vlan_ix, slave, port);
1604         }
1605
1606         /* save original vlan ix and vlan id */
1607         work->orig_vlan_id = vp_oper->state.default_vlan;
1608         work->orig_vlan_ix = vp_oper->vlan_idx;
1609
1610         /* handle new qos */
1611         if (vp_oper->state.default_qos != vp_admin->default_qos)
1612                 work->flags |= MLX4_VF_IMMED_VLAN_FLAG_QOS;
1613
1614         if (work->flags & MLX4_VF_IMMED_VLAN_FLAG_VLAN)
1615                 vp_oper->vlan_idx = admin_vlan_ix;
1616
1617         vp_oper->state.default_vlan = vp_admin->default_vlan;
1618         vp_oper->state.default_qos = vp_admin->default_qos;
1619         vp_oper->state.link_state = vp_admin->link_state;
1620
1621         if (vp_admin->link_state == IFLA_VF_LINK_STATE_DISABLE)
1622                 work->flags |= MLX4_VF_IMMED_VLAN_FLAG_LINK_DISABLE;
1623
1624         /* iterate over QPs owned by this slave, using UPDATE_QP */
1625         work->port = port;
1626         work->slave = slave;
1627         work->qos = vp_oper->state.default_qos;
1628         work->vlan_id = vp_oper->state.default_vlan;
1629         work->vlan_ix = vp_oper->vlan_idx;
1630         work->priv = priv;
1631         INIT_WORK(&work->work, mlx4_vf_immed_vlan_work_handler);
1632         queue_work(priv->mfunc.master.comm_wq, &work->work);
1633
1634         return 0;
1635 }
1636
1637
1638 static int mlx4_master_activate_admin_state(struct mlx4_priv *priv, int slave)
1639 {
1640         int port, err;
1641         struct mlx4_vport_state *vp_admin;
1642         struct mlx4_vport_oper_state *vp_oper;
1643
1644         for (port = 1; port <= MLX4_MAX_PORTS; port++) {
1645                 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
1646                 vp_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
1647                 vp_oper->state = *vp_admin;
1648                 if (MLX4_VGT != vp_admin->default_vlan) {
1649                         err = __mlx4_register_vlan(&priv->dev, port,
1650                                                    vp_admin->default_vlan, &(vp_oper->vlan_idx));
1651                         if (err) {
1652                                 vp_oper->vlan_idx = NO_INDX;
1653                                 mlx4_warn((&priv->dev),
1654                                           "No vlan resorces slave %d, port %d\n",
1655                                           slave, port);
1656                                 return err;
1657                         }
1658                         mlx4_dbg((&(priv->dev)), "alloc vlan %d idx  %d slave %d port %d\n",
1659                                  (int)(vp_oper->state.default_vlan),
1660                                  vp_oper->vlan_idx, slave, port);
1661                 }
1662                 if (vp_admin->spoofchk) {
1663                         vp_oper->mac_idx = __mlx4_register_mac(&priv->dev,
1664                                                                port,
1665                                                                vp_admin->mac);
1666                         if (0 > vp_oper->mac_idx) {
1667                                 err = vp_oper->mac_idx;
1668                                 vp_oper->mac_idx = NO_INDX;
1669                                 mlx4_warn((&priv->dev),
1670                                           "No mac resorces slave %d, port %d\n",
1671                                           slave, port);
1672                                 return err;
1673                         }
1674                         mlx4_dbg((&(priv->dev)), "alloc mac %llx idx  %d slave %d port %d\n",
1675                                  vp_oper->state.mac, vp_oper->mac_idx, slave, port);
1676                 }
1677         }
1678         return 0;
1679 }
1680
1681 static void mlx4_master_deactivate_admin_state(struct mlx4_priv *priv, int slave)
1682 {
1683         int port;
1684         struct mlx4_vport_oper_state *vp_oper;
1685
1686         for (port = 1; port <= MLX4_MAX_PORTS; port++) {
1687                 vp_oper = &priv->mfunc.master.vf_oper[slave].vport[port];
1688                 if (NO_INDX != vp_oper->vlan_idx) {
1689                         __mlx4_unregister_vlan(&priv->dev,
1690                                                port, vp_oper->state.default_vlan);
1691                         vp_oper->vlan_idx = NO_INDX;
1692                 }
1693                 if (NO_INDX != vp_oper->mac_idx) {
1694                         __mlx4_unregister_mac(&priv->dev, port, vp_oper->state.mac);
1695                         vp_oper->mac_idx = NO_INDX;
1696                 }
1697         }
1698         return;
1699 }
1700
1701 static void mlx4_master_do_cmd(struct mlx4_dev *dev, int slave, u8 cmd,
1702                                u16 param, u8 toggle)
1703 {
1704         struct mlx4_priv *priv = mlx4_priv(dev);
1705         struct mlx4_slave_state *slave_state = priv->mfunc.master.slave_state;
1706         u32 reply;
1707         u8 is_going_down = 0;
1708         int i;
1709         unsigned long flags;
1710
1711         slave_state[slave].comm_toggle ^= 1;
1712         reply = (u32) slave_state[slave].comm_toggle << 31;
1713         if (toggle != slave_state[slave].comm_toggle) {
1714                 mlx4_warn(dev, "Incorrect toggle %d from slave %d. *** MASTER"
1715                           "STATE COMPROMISIED ***\n", toggle, slave);
1716                 goto reset_slave;
1717         }
1718         if (cmd == MLX4_COMM_CMD_RESET) {
1719                 mlx4_warn(dev, "Received reset from slave:%d\n", slave);
1720                 slave_state[slave].active = false;
1721                 mlx4_master_deactivate_admin_state(priv, slave);
1722                 for (i = 0; i < MLX4_EVENT_TYPES_NUM; ++i) {
1723                                 slave_state[slave].event_eq[i].eqn = -1;
1724                                 slave_state[slave].event_eq[i].token = 0;
1725                 }
1726                 /*check if we are in the middle of FLR process,
1727                 if so return "retry" status to the slave*/
1728                 if (MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd)
1729                         goto inform_slave_state;
1730
1731                 mlx4_dispatch_event(dev, MLX4_DEV_EVENT_SLAVE_SHUTDOWN, slave);
1732
1733                 /* write the version in the event field */
1734                 reply |= mlx4_comm_get_version();
1735
1736                 goto reset_slave;
1737         }
1738         /*command from slave in the middle of FLR*/
1739         if (cmd != MLX4_COMM_CMD_RESET &&
1740             MLX4_COMM_CMD_FLR == slave_state[slave].last_cmd) {
1741                 mlx4_warn(dev, "slave:%d is Trying to run cmd(0x%x) "
1742                           "in the middle of FLR\n", slave, cmd);
1743                 return;
1744         }
1745
1746         switch (cmd) {
1747         case MLX4_COMM_CMD_VHCR0:
1748                 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_RESET)
1749                         goto reset_slave;
1750                 slave_state[slave].vhcr_dma = ((u64) param) << 48;
1751                 priv->mfunc.master.slave_state[slave].cookie = 0;
1752                 mutex_init(&priv->mfunc.master.gen_eqe_mutex[slave]);
1753                 break;
1754         case MLX4_COMM_CMD_VHCR1:
1755                 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR0)
1756                         goto reset_slave;
1757                 slave_state[slave].vhcr_dma |= ((u64) param) << 32;
1758                 break;
1759         case MLX4_COMM_CMD_VHCR2:
1760                 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR1)
1761                         goto reset_slave;
1762                 slave_state[slave].vhcr_dma |= ((u64) param) << 16;
1763                 break;
1764         case MLX4_COMM_CMD_VHCR_EN:
1765                 if (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR2)
1766                         goto reset_slave;
1767                 slave_state[slave].vhcr_dma |= param;
1768                 if (mlx4_master_activate_admin_state(priv, slave))
1769                                 goto reset_slave;
1770                 slave_state[slave].active = true;
1771                 mlx4_dispatch_event(dev, MLX4_DEV_EVENT_SLAVE_INIT, slave);
1772                 break;
1773         case MLX4_COMM_CMD_VHCR_POST:
1774                 if ((slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_EN) &&
1775                     (slave_state[slave].last_cmd != MLX4_COMM_CMD_VHCR_POST))
1776                         goto reset_slave;
1777
1778                 mutex_lock(&priv->cmd.slave_cmd_mutex);
1779                 if (mlx4_master_process_vhcr(dev, slave, NULL)) {
1780                         mlx4_err(dev, "Failed processing vhcr for slave:%d,"
1781                                  " resetting slave.\n", slave);
1782                         mutex_unlock(&priv->cmd.slave_cmd_mutex);
1783                         goto reset_slave;
1784                 }
1785                 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1786                 break;
1787         default:
1788                 mlx4_warn(dev, "Bad comm cmd:%d from slave:%d\n", cmd, slave);
1789                 goto reset_slave;
1790         }
1791         spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
1792         if (!slave_state[slave].is_slave_going_down)
1793                 slave_state[slave].last_cmd = cmd;
1794         else
1795                 is_going_down = 1;
1796         spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
1797         if (is_going_down) {
1798                 mlx4_warn(dev, "Slave is going down aborting command(%d)"
1799                           " executing from slave:%d\n",
1800                           cmd, slave);
1801                 return;
1802         }
1803         __raw_writel((__force u32) cpu_to_be32(reply),
1804                      &priv->mfunc.comm[slave].slave_read);
1805         mmiowb();
1806
1807         return;
1808
1809 reset_slave:
1810         /* cleanup any slave resources */
1811         mlx4_delete_all_resources_for_slave(dev, slave);
1812         spin_lock_irqsave(&priv->mfunc.master.slave_state_lock, flags);
1813         if (!slave_state[slave].is_slave_going_down)
1814                 slave_state[slave].last_cmd = MLX4_COMM_CMD_RESET;
1815         spin_unlock_irqrestore(&priv->mfunc.master.slave_state_lock, flags);
1816         /*with slave in the middle of flr, no need to clean resources again.*/
1817 inform_slave_state:
1818         memset(&slave_state[slave].event_eq, 0,
1819                sizeof(struct mlx4_slave_event_eq_info));
1820         __raw_writel((__force u32) cpu_to_be32(reply),
1821                      &priv->mfunc.comm[slave].slave_read);
1822         wmb();
1823 }
1824
1825 /* master command processing */
1826 void mlx4_master_comm_channel(struct work_struct *work)
1827 {
1828         struct mlx4_mfunc_master_ctx *master =
1829                 container_of(work,
1830                              struct mlx4_mfunc_master_ctx,
1831                              comm_work);
1832         struct mlx4_mfunc *mfunc =
1833                 container_of(master, struct mlx4_mfunc, master);
1834         struct mlx4_priv *priv =
1835                 container_of(mfunc, struct mlx4_priv, mfunc);
1836         struct mlx4_dev *dev = &priv->dev;
1837         __be32 *bit_vec;
1838         u32 comm_cmd;
1839         u32 vec;
1840         int i, j, slave;
1841         int toggle;
1842         int served = 0;
1843         int reported = 0;
1844         u32 slt;
1845
1846         bit_vec = master->comm_arm_bit_vector;
1847         for (i = 0; i < COMM_CHANNEL_BIT_ARRAY_SIZE; i++) {
1848                 vec = be32_to_cpu(bit_vec[i]);
1849                 for (j = 0; j < 32; j++) {
1850                         if (!(vec & (1 << j)))
1851                                 continue;
1852                         ++reported;
1853                         slave = (i * 32) + j;
1854                         comm_cmd = swab32(readl(
1855                                           &mfunc->comm[slave].slave_write));
1856                         slt = swab32(readl(&mfunc->comm[slave].slave_read))
1857                                      >> 31;
1858                         toggle = comm_cmd >> 31;
1859                         if (toggle != slt) {
1860                                 if (master->slave_state[slave].comm_toggle
1861                                     != slt) {
1862                                         printk(KERN_INFO "slave %d out of sync."
1863                                                " read toggle %d, state toggle %d. "
1864                                                "Resynching.\n", slave, slt,
1865                                                master->slave_state[slave].comm_toggle);
1866                                         master->slave_state[slave].comm_toggle =
1867                                                 slt;
1868                                 }
1869                                 mlx4_master_do_cmd(dev, slave,
1870                                                    comm_cmd >> 16 & 0xff,
1871                                                    comm_cmd & 0xffff, toggle);
1872                                 ++served;
1873                         }
1874                 }
1875         }
1876
1877         if (reported && reported != served)
1878                 mlx4_warn(dev, "Got command event with bitmask from %d slaves"
1879                           " but %d were served\n",
1880                           reported, served);
1881
1882         if (mlx4_ARM_COMM_CHANNEL(dev))
1883                 mlx4_warn(dev, "Failed to arm comm channel events\n");
1884 }
1885
1886 static int sync_toggles(struct mlx4_dev *dev)
1887 {
1888         struct mlx4_priv *priv = mlx4_priv(dev);
1889         int wr_toggle;
1890         int rd_toggle;
1891         unsigned long end;
1892
1893         wr_toggle = swab32(readl(&priv->mfunc.comm->slave_write)) >> 31;
1894         end = jiffies + msecs_to_jiffies(5000);
1895
1896         while (time_before(jiffies, end)) {
1897                 rd_toggle = swab32(readl(&priv->mfunc.comm->slave_read)) >> 31;
1898                 if (rd_toggle == wr_toggle) {
1899                         priv->cmd.comm_toggle = rd_toggle;
1900                         return 0;
1901                 }
1902
1903                 cond_resched();
1904         }
1905
1906         /*
1907          * we could reach here if for example the previous VM using this
1908          * function misbehaved and left the channel with unsynced state. We
1909          * should fix this here and give this VM a chance to use a properly
1910          * synced channel
1911          */
1912         mlx4_warn(dev, "recovering from previously mis-behaved VM\n");
1913         __raw_writel((__force u32) 0, &priv->mfunc.comm->slave_read);
1914         __raw_writel((__force u32) 0, &priv->mfunc.comm->slave_write);
1915         priv->cmd.comm_toggle = 0;
1916
1917         return 0;
1918 }
1919
1920 int mlx4_multi_func_init(struct mlx4_dev *dev)
1921 {
1922         struct mlx4_priv *priv = mlx4_priv(dev);
1923         struct mlx4_slave_state *s_state;
1924         int i, j, err, port;
1925
1926         if (mlx4_is_master(dev))
1927                 priv->mfunc.comm =
1928                 ioremap(pci_resource_start(dev->pdev, priv->fw.comm_bar) +
1929                         priv->fw.comm_base, MLX4_COMM_PAGESIZE);
1930         else
1931                 priv->mfunc.comm =
1932                 ioremap(pci_resource_start(dev->pdev, 2) +
1933                         MLX4_SLAVE_COMM_BASE, MLX4_COMM_PAGESIZE);
1934         if (!priv->mfunc.comm) {
1935                 mlx4_err(dev, "Couldn't map communication vector.\n");
1936                 goto err_vhcr;
1937         }
1938
1939         if (mlx4_is_master(dev)) {
1940                 priv->mfunc.master.slave_state =
1941                         kzalloc(dev->num_slaves *
1942                                 sizeof(struct mlx4_slave_state), GFP_KERNEL);
1943                 if (!priv->mfunc.master.slave_state)
1944                         goto err_comm;
1945
1946                 priv->mfunc.master.vf_admin =
1947                         kzalloc(dev->num_slaves *
1948                                 sizeof(struct mlx4_vf_admin_state), GFP_KERNEL);
1949                 if (!priv->mfunc.master.vf_admin)
1950                         goto err_comm_admin;
1951
1952                 priv->mfunc.master.vf_oper =
1953                         kzalloc(dev->num_slaves *
1954                                 sizeof(struct mlx4_vf_oper_state), GFP_KERNEL);
1955                 if (!priv->mfunc.master.vf_oper)
1956                         goto err_comm_oper;
1957
1958                 for (i = 0; i < dev->num_slaves; ++i) {
1959                         s_state = &priv->mfunc.master.slave_state[i];
1960                         s_state->last_cmd = MLX4_COMM_CMD_RESET;
1961                         for (j = 0; j < MLX4_EVENT_TYPES_NUM; ++j)
1962                                 s_state->event_eq[j].eqn = -1;
1963                         __raw_writel((__force u32) 0,
1964                                      &priv->mfunc.comm[i].slave_write);
1965                         __raw_writel((__force u32) 0,
1966                                      &priv->mfunc.comm[i].slave_read);
1967                         mmiowb();
1968                         for (port = 1; port <= MLX4_MAX_PORTS; port++) {
1969                                 s_state->vlan_filter[port] =
1970                                         kzalloc(sizeof(struct mlx4_vlan_fltr),
1971                                                 GFP_KERNEL);
1972                                 if (!s_state->vlan_filter[port]) {
1973                                         if (--port)
1974                                                 kfree(s_state->vlan_filter[port]);
1975                                         goto err_slaves;
1976                                 }
1977                                 INIT_LIST_HEAD(&s_state->mcast_filters[port]);
1978                                 priv->mfunc.master.vf_admin[i].vport[port].default_vlan = MLX4_VGT;
1979                                 priv->mfunc.master.vf_oper[i].vport[port].state.default_vlan = MLX4_VGT;
1980                                 priv->mfunc.master.vf_oper[i].vport[port].vlan_idx = NO_INDX;
1981                                 priv->mfunc.master.vf_oper[i].vport[port].mac_idx = NO_INDX;
1982                         }
1983                         spin_lock_init(&s_state->lock);
1984                 }
1985
1986                 memset(&priv->mfunc.master.cmd_eqe, 0, dev->caps.eqe_size);
1987                 priv->mfunc.master.cmd_eqe.type = MLX4_EVENT_TYPE_CMD;
1988                 INIT_WORK(&priv->mfunc.master.comm_work,
1989                           mlx4_master_comm_channel);
1990                 INIT_WORK(&priv->mfunc.master.slave_event_work,
1991                           mlx4_gen_slave_eqe);
1992                 INIT_WORK(&priv->mfunc.master.slave_flr_event_work,
1993                           mlx4_master_handle_slave_flr);
1994                 spin_lock_init(&priv->mfunc.master.slave_state_lock);
1995                 spin_lock_init(&priv->mfunc.master.slave_eq.event_lock);
1996                 priv->mfunc.master.comm_wq =
1997                         create_singlethread_workqueue("mlx4_comm");
1998                 if (!priv->mfunc.master.comm_wq)
1999                         goto err_slaves;
2000
2001                 if (mlx4_init_resource_tracker(dev))
2002                         goto err_thread;
2003
2004                 err = mlx4_ARM_COMM_CHANNEL(dev);
2005                 if (err) {
2006                         mlx4_err(dev, " Failed to arm comm channel eq: %x\n",
2007                                  err);
2008                         goto err_resource;
2009                 }
2010
2011         } else {
2012                 err = sync_toggles(dev);
2013                 if (err) {
2014                         mlx4_err(dev, "Couldn't sync toggles\n");
2015                         goto err_comm;
2016                 }
2017         }
2018         return 0;
2019
2020 err_resource:
2021         mlx4_free_resource_tracker(dev, RES_TR_FREE_ALL);
2022 err_thread:
2023         flush_workqueue(priv->mfunc.master.comm_wq);
2024         destroy_workqueue(priv->mfunc.master.comm_wq);
2025 err_slaves:
2026         while (--i) {
2027                 for (port = 1; port <= MLX4_MAX_PORTS; port++)
2028                         kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]);
2029         }
2030         kfree(priv->mfunc.master.vf_oper);
2031 err_comm_oper:
2032         kfree(priv->mfunc.master.vf_admin);
2033 err_comm_admin:
2034         kfree(priv->mfunc.master.slave_state);
2035 err_comm:
2036         iounmap(priv->mfunc.comm);
2037 err_vhcr:
2038         dma_free_coherent(&(dev->pdev->dev), PAGE_SIZE,
2039                                              priv->mfunc.vhcr,
2040                                              priv->mfunc.vhcr_dma);
2041         priv->mfunc.vhcr = NULL;
2042         return -ENOMEM;
2043 }
2044
2045 int mlx4_cmd_init(struct mlx4_dev *dev)
2046 {
2047         struct mlx4_priv *priv = mlx4_priv(dev);
2048
2049         mutex_init(&priv->cmd.hcr_mutex);
2050         mutex_init(&priv->cmd.slave_cmd_mutex);
2051         sema_init(&priv->cmd.poll_sem, 1);
2052         priv->cmd.use_events = 0;
2053         priv->cmd.toggle     = 1;
2054
2055         priv->cmd.hcr = NULL;
2056         priv->mfunc.vhcr = NULL;
2057
2058         if (!mlx4_is_slave(dev)) {
2059                 priv->cmd.hcr = ioremap(pci_resource_start(dev->pdev, 0) +
2060                                         MLX4_HCR_BASE, MLX4_HCR_SIZE);
2061                 if (!priv->cmd.hcr) {
2062                         mlx4_err(dev, "Couldn't map command register.\n");
2063                         return -ENOMEM;
2064                 }
2065         }
2066
2067         if (mlx4_is_mfunc(dev)) {
2068                 priv->mfunc.vhcr = dma_alloc_coherent(&(dev->pdev->dev), PAGE_SIZE,
2069                                                       &priv->mfunc.vhcr_dma,
2070                                                       GFP_KERNEL);
2071                 if (!priv->mfunc.vhcr)
2072                         goto err_hcr;
2073         }
2074
2075         priv->cmd.pool = pci_pool_create("mlx4_cmd", dev->pdev,
2076                                          MLX4_MAILBOX_SIZE,
2077                                          MLX4_MAILBOX_SIZE, 0);
2078         if (!priv->cmd.pool)
2079                 goto err_vhcr;
2080
2081         return 0;
2082
2083 err_vhcr:
2084         if (mlx4_is_mfunc(dev))
2085                 dma_free_coherent(&(dev->pdev->dev), PAGE_SIZE,
2086                                   priv->mfunc.vhcr, priv->mfunc.vhcr_dma);
2087         priv->mfunc.vhcr = NULL;
2088
2089 err_hcr:
2090         if (!mlx4_is_slave(dev))
2091                 iounmap(priv->cmd.hcr);
2092         return -ENOMEM;
2093 }
2094
2095 void mlx4_multi_func_cleanup(struct mlx4_dev *dev)
2096 {
2097         struct mlx4_priv *priv = mlx4_priv(dev);
2098         int i, port;
2099
2100         if (mlx4_is_master(dev)) {
2101                 flush_workqueue(priv->mfunc.master.comm_wq);
2102                 destroy_workqueue(priv->mfunc.master.comm_wq);
2103                 for (i = 0; i < dev->num_slaves; i++) {
2104                         for (port = 1; port <= MLX4_MAX_PORTS; port++)
2105                                 kfree(priv->mfunc.master.slave_state[i].vlan_filter[port]);
2106                 }
2107                 kfree(priv->mfunc.master.slave_state);
2108                 kfree(priv->mfunc.master.vf_admin);
2109                 kfree(priv->mfunc.master.vf_oper);
2110         }
2111
2112         iounmap(priv->mfunc.comm);
2113 }
2114
2115 void mlx4_cmd_cleanup(struct mlx4_dev *dev)
2116 {
2117         struct mlx4_priv *priv = mlx4_priv(dev);
2118
2119         pci_pool_destroy(priv->cmd.pool);
2120
2121         if (!mlx4_is_slave(dev))
2122                 iounmap(priv->cmd.hcr);
2123         if (mlx4_is_mfunc(dev))
2124                 dma_free_coherent(&(dev->pdev->dev), PAGE_SIZE,
2125                                   priv->mfunc.vhcr, priv->mfunc.vhcr_dma);
2126         priv->mfunc.vhcr = NULL;
2127 }
2128
2129 /*
2130  * Switch to using events to issue FW commands (can only be called
2131  * after event queue for command events has been initialized).
2132  */
2133 int mlx4_cmd_use_events(struct mlx4_dev *dev)
2134 {
2135         struct mlx4_priv *priv = mlx4_priv(dev);
2136         int i;
2137         int err = 0;
2138
2139         priv->cmd.context = kmalloc(priv->cmd.max_cmds *
2140                                    sizeof (struct mlx4_cmd_context),
2141                                    GFP_KERNEL);
2142         if (!priv->cmd.context)
2143                 return -ENOMEM;
2144
2145         for (i = 0; i < priv->cmd.max_cmds; ++i) {
2146                 priv->cmd.context[i].token = i;
2147                 priv->cmd.context[i].next  = i + 1;
2148         }
2149
2150         priv->cmd.context[priv->cmd.max_cmds - 1].next = -1;
2151         priv->cmd.free_head = 0;
2152
2153         sema_init(&priv->cmd.event_sem, priv->cmd.max_cmds);
2154         spin_lock_init(&priv->cmd.context_lock);
2155
2156         for (priv->cmd.token_mask = 1;
2157              priv->cmd.token_mask < priv->cmd.max_cmds;
2158              priv->cmd.token_mask <<= 1)
2159                 ; /* nothing */
2160         --priv->cmd.token_mask;
2161
2162         down(&priv->cmd.poll_sem);
2163         priv->cmd.use_events = 1;
2164
2165         return err;
2166 }
2167
2168 /*
2169  * Switch back to polling (used when shutting down the device)
2170  */
2171 void mlx4_cmd_use_polling(struct mlx4_dev *dev)
2172 {
2173         struct mlx4_priv *priv = mlx4_priv(dev);
2174         int i;
2175
2176         priv->cmd.use_events = 0;
2177
2178         for (i = 0; i < priv->cmd.max_cmds; ++i)
2179                 down(&priv->cmd.event_sem);
2180
2181         kfree(priv->cmd.context);
2182
2183         up(&priv->cmd.poll_sem);
2184 }
2185
2186 struct mlx4_cmd_mailbox *mlx4_alloc_cmd_mailbox(struct mlx4_dev *dev)
2187 {
2188         struct mlx4_cmd_mailbox *mailbox;
2189
2190         mailbox = kmalloc(sizeof *mailbox, GFP_KERNEL);
2191         if (!mailbox)
2192                 return ERR_PTR(-ENOMEM);
2193
2194         mailbox->buf = pci_pool_alloc(mlx4_priv(dev)->cmd.pool, GFP_KERNEL,
2195                                       &mailbox->dma);
2196         if (!mailbox->buf) {
2197                 kfree(mailbox);
2198                 return ERR_PTR(-ENOMEM);
2199         }
2200
2201         return mailbox;
2202 }
2203 EXPORT_SYMBOL_GPL(mlx4_alloc_cmd_mailbox);
2204
2205 void mlx4_free_cmd_mailbox(struct mlx4_dev *dev,
2206                            struct mlx4_cmd_mailbox *mailbox)
2207 {
2208         if (!mailbox)
2209                 return;
2210
2211         pci_pool_free(mlx4_priv(dev)->cmd.pool, mailbox->buf, mailbox->dma);
2212         kfree(mailbox);
2213 }
2214 EXPORT_SYMBOL_GPL(mlx4_free_cmd_mailbox);
2215
2216 u32 mlx4_comm_get_version(void)
2217 {
2218          return ((u32) CMD_CHAN_IF_REV << 8) | (u32) CMD_CHAN_VER;
2219 }
2220
2221 static int mlx4_get_slave_indx(struct mlx4_dev *dev, int vf)
2222 {
2223         if ((vf < 0) || (vf >= dev->num_vfs)) {
2224                 mlx4_err(dev, "Bad vf number:%d (number of activated vf: %d)\n", vf, dev->num_vfs);
2225                 return -EINVAL;
2226         }
2227
2228         return vf+1;
2229 }
2230
2231 int mlx4_set_vf_mac(struct mlx4_dev *dev, int port, int vf, u64 mac)
2232 {
2233         struct mlx4_priv *priv = mlx4_priv(dev);
2234         struct mlx4_vport_state *s_info;
2235         int slave;
2236
2237         if (!mlx4_is_master(dev))
2238                 return -EPROTONOSUPPORT;
2239
2240         slave = mlx4_get_slave_indx(dev, vf);
2241         if (slave < 0)
2242                 return -EINVAL;
2243
2244         s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
2245         s_info->mac = mac;
2246         mlx4_info(dev, "default mac on vf %d port %d to %llX will take afect only after vf restart\n",
2247                   vf, port, s_info->mac);
2248         return 0;
2249 }
2250 EXPORT_SYMBOL_GPL(mlx4_set_vf_mac);
2251
2252
2253 int mlx4_set_vf_vlan(struct mlx4_dev *dev, int port, int vf, u16 vlan, u8 qos)
2254 {
2255         struct mlx4_priv *priv = mlx4_priv(dev);
2256         struct mlx4_vport_state *vf_admin;
2257         int slave;
2258
2259         if ((!mlx4_is_master(dev)) ||
2260             !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VLAN_CONTROL))
2261                 return -EPROTONOSUPPORT;
2262
2263         if ((vlan > 4095) || (qos > 7))
2264                 return -EINVAL;
2265
2266         slave = mlx4_get_slave_indx(dev, vf);
2267         if (slave < 0)
2268                 return -EINVAL;
2269
2270         vf_admin = &priv->mfunc.master.vf_admin[slave].vport[port];
2271
2272         if ((0 == vlan) && (0 == qos))
2273                 vf_admin->default_vlan = MLX4_VGT;
2274         else
2275                 vf_admin->default_vlan = vlan;
2276         vf_admin->default_qos = qos;
2277
2278         if (mlx4_master_immediate_activate_vlan_qos(priv, slave, port))
2279                 mlx4_info(dev,
2280                           "updating vf %d port %d config will take effect on next VF restart\n",
2281                           vf, port);
2282         return 0;
2283 }
2284 EXPORT_SYMBOL_GPL(mlx4_set_vf_vlan);
2285
2286 int mlx4_set_vf_spoofchk(struct mlx4_dev *dev, int port, int vf, bool setting)
2287 {
2288         struct mlx4_priv *priv = mlx4_priv(dev);
2289         struct mlx4_vport_state *s_info;
2290         int slave;
2291
2292         if ((!mlx4_is_master(dev)) ||
2293             !(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FSM))
2294                 return -EPROTONOSUPPORT;
2295
2296         slave = mlx4_get_slave_indx(dev, vf);
2297         if (slave < 0)
2298                 return -EINVAL;
2299
2300         s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
2301         s_info->spoofchk = setting;
2302
2303         return 0;
2304 }
2305 EXPORT_SYMBOL_GPL(mlx4_set_vf_spoofchk);
2306
2307 int mlx4_get_vf_config(struct mlx4_dev *dev, int port, int vf, struct ifla_vf_info *ivf)
2308 {
2309         struct mlx4_priv *priv = mlx4_priv(dev);
2310         struct mlx4_vport_state *s_info;
2311         int slave;
2312
2313         if (!mlx4_is_master(dev))
2314                 return -EPROTONOSUPPORT;
2315
2316         slave = mlx4_get_slave_indx(dev, vf);
2317         if (slave < 0)
2318                 return -EINVAL;
2319
2320         s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
2321         ivf->vf = vf;
2322
2323         /* need to convert it to a func */
2324         ivf->mac[0] = ((s_info->mac >> (5*8)) & 0xff);
2325         ivf->mac[1] = ((s_info->mac >> (4*8)) & 0xff);
2326         ivf->mac[2] = ((s_info->mac >> (3*8)) & 0xff);
2327         ivf->mac[3] = ((s_info->mac >> (2*8)) & 0xff);
2328         ivf->mac[4] = ((s_info->mac >> (1*8)) & 0xff);
2329         ivf->mac[5] = ((s_info->mac)  & 0xff);
2330
2331         ivf->vlan       = s_info->default_vlan;
2332         ivf->qos        = s_info->default_qos;
2333         ivf->tx_rate    = s_info->tx_rate;
2334         ivf->spoofchk   = s_info->spoofchk;
2335         ivf->linkstate  = s_info->link_state;
2336
2337         return 0;
2338 }
2339 EXPORT_SYMBOL_GPL(mlx4_get_vf_config);
2340
2341 int mlx4_set_vf_link_state(struct mlx4_dev *dev, int port, int vf, int link_state)
2342 {
2343         struct mlx4_priv *priv = mlx4_priv(dev);
2344         struct mlx4_vport_state *s_info;
2345         int slave;
2346         u8 link_stat_event;
2347
2348         slave = mlx4_get_slave_indx(dev, vf);
2349         if (slave < 0)
2350                 return -EINVAL;
2351
2352         switch (link_state) {
2353         case IFLA_VF_LINK_STATE_AUTO:
2354                 /* get current link state */
2355                 if (!priv->sense.do_sense_port[port])
2356                         link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_ACTIVE;
2357                 else
2358                         link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_DOWN;
2359             break;
2360
2361         case IFLA_VF_LINK_STATE_ENABLE:
2362                 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_ACTIVE;
2363             break;
2364
2365         case IFLA_VF_LINK_STATE_DISABLE:
2366                 link_stat_event = MLX4_PORT_CHANGE_SUBTYPE_DOWN;
2367             break;
2368
2369         default:
2370                 mlx4_warn(dev, "unknown value for link_state %02x on slave %d port %d\n",
2371                           link_state, slave, port);
2372                 return -EINVAL;
2373         };
2374         s_info = &priv->mfunc.master.vf_admin[slave].vport[port];
2375         s_info->link_state = link_state;
2376
2377         /* send event */
2378         mlx4_gen_port_state_change_eqe(dev, slave, port, link_stat_event);
2379
2380         if (mlx4_master_immediate_activate_vlan_qos(priv, slave, port))
2381                 mlx4_dbg(dev,
2382                          "updating vf %d port %d no link state HW enforcment\n",
2383                          vf, port);
2384         return 0;
2385 }
2386 EXPORT_SYMBOL_GPL(mlx4_set_vf_link_state);