drivers/net/qlge/qlge_mpi.c

   1 #include "qlge.h"
   2
   3 int ql_unpause_mpi_risc(struct ql_adapter *qdev)
   4 {
   5         u32 tmp;
   6
   7         /* Un-pause the RISC */
   8         tmp = ql_read32(qdev, CSR);
   9         if (!(tmp & CSR_RP))
  10                 return -EIO;
  11
  12         ql_write32(qdev, CSR, CSR_CMD_CLR_PAUSE);
  13         return 0;
  14 }
  15
  16 int ql_pause_mpi_risc(struct ql_adapter *qdev)
  17 {
  18         u32 tmp;
  19         int count = UDELAY_COUNT;
  20
  21         /* Pause the RISC */
  22         ql_write32(qdev, CSR, CSR_CMD_SET_PAUSE);
  23         do {
  24                 tmp = ql_read32(qdev, CSR);
  25                 if (tmp & CSR_RP)
  26                         break;
  27                 mdelay(UDELAY_DELAY);
  28                 count--;
  29         } while (count);
  30         return (count == 0) ? -ETIMEDOUT : 0;
  31 }
  32
  33 int ql_hard_reset_mpi_risc(struct ql_adapter *qdev)
  34 {
  35         u32 tmp;
  36         int count = UDELAY_COUNT;
  37
  38         /* Reset the RISC */
  39         ql_write32(qdev, CSR, CSR_CMD_SET_RST);
  40         do {
  41                 tmp = ql_read32(qdev, CSR);
  42                 if (tmp & CSR_RR) {
  43                         ql_write32(qdev, CSR, CSR_CMD_CLR_RST);
  44                         break;
  45                 }
  46                 mdelay(UDELAY_DELAY);
  47                 count--;
  48         } while (count);
  49         return (count == 0) ? -ETIMEDOUT : 0;
  50 }
  51
  52 int ql_read_mpi_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
  53 {
  54         int status;
  55         /* wait for reg to come ready */
  56         status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
  57         if (status)
  58                 goto exit;
  59         /* set up for reg read */
  60         ql_write32(qdev, PROC_ADDR, reg | PROC_ADDR_R);
  61         /* wait for reg to come ready */
  62         status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
  63         if (status)
  64                 goto exit;
  65         /* get the data */
  66         *data = ql_read32(qdev, PROC_DATA);
  67 exit:
  68         return status;
  69 }
  70
  71 int ql_write_mpi_reg(struct ql_adapter *qdev, u32 reg, u32 data)
  72 {
  73         int status = 0;
  74         /* wait for reg to come ready */
  75         status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
  76         if (status)
  77                 goto exit;
  78         /* write the data to the data reg */
  79         ql_write32(qdev, PROC_DATA, data);
  80         /* trigger the write */
  81         ql_write32(qdev, PROC_ADDR, reg);
  82         /* wait for reg to come ready */
  83         status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
  84         if (status)
  85                 goto exit;
  86 exit:
  87         return status;
  88 }
  89
  90 static int ql_soft_reset_mpi_risc(struct ql_adapter *qdev)
  91 {
  92         int status;
  93         status = ql_write_mpi_reg(qdev, 0x00001010, 1);
  94         return status;
  95 }
  96
  97 /* Determine if we are in charge of the firwmare. If
  98  * we are the lower of the 2 NIC pcie functions, or if
  99  * we are the higher function and the lower function
 100  * is not enabled.
 101  */
 102 int ql_own_firmware(struct ql_adapter *qdev)
 103 {
 104         u32 temp;
 105
 106         /* If we are the lower of the 2 NIC functions
 107          * on the chip the we are responsible for
 108          * core dump and firmware reset after an error.
 109          */
 110         if (qdev->func < qdev->alt_func)
 111                 return 1;
 112
 113         /* If we are the higher of the 2 NIC functions
 114          * on the chip and the lower function is not
 115          * enabled, then we are responsible for
 116          * core dump and firmware reset after an error.
 117          */
 118         temp =  ql_read32(qdev, STS);
 119         if (!(temp & (1 << (8 + qdev->alt_func))))
 120                 return 1;
 121
 122         return 0;
 123
 124 }
 125
 126 static int ql_get_mb_sts(struct ql_adapter *qdev, struct mbox_params *mbcp)
 127 {
 128         int i, status;
 129
 130         status = ql_sem_spinlock(qdev, SEM_PROC_REG_MASK);
 131         if (status)
 132                 return -EBUSY;
 133         for (i = 0; i < mbcp->out_count; i++) {
 134                 status =
 135                     ql_read_mpi_reg(qdev, qdev->mailbox_out + i,
 136                                      &mbcp->mbox_out[i]);
 137                 if (status) {
 138                         netif_err(qdev, drv, qdev->ndev, "Failed mailbox read.\n");
 139                         break;
 140                 }
 141         }
 142         ql_sem_unlock(qdev, SEM_PROC_REG_MASK); /* does flush too */
 143         return status;
 144 }
 145
 146 /* Wait for a single mailbox command to complete.
 147  * Returns zero on success.
 148  */
 149 static int ql_wait_mbx_cmd_cmplt(struct ql_adapter *qdev)
 150 {
 151         int count = 100;
 152         u32 value;
 153
 154         do {
 155                 value = ql_read32(qdev, STS);
 156                 if (value & STS_PI)
 157                         return 0;
 158                 mdelay(UDELAY_DELAY); /* 100ms */
 159         } while (--count);
 160         return -ETIMEDOUT;
 161 }
 162
 163 /* Execute a single mailbox command.
 164  * Caller must hold PROC_ADDR semaphore.
 165  */
 166 static int ql_exec_mb_cmd(struct ql_adapter *qdev, struct mbox_params *mbcp)
 167 {
 168         int i, status;
 169
 170         /*
 171          * Make sure there's nothing pending.
 172          * This shouldn't happen.
 173          */
 174         if (ql_read32(qdev, CSR) & CSR_HRI)
 175                 return -EIO;
 176
 177         status = ql_sem_spinlock(qdev, SEM_PROC_REG_MASK);
 178         if (status)
 179                 return status;
 180
 181         /*
 182          * Fill the outbound mailboxes.
 183          */
 184         for (i = 0; i < mbcp->in_count; i++) {
 185                 status = ql_write_mpi_reg(qdev, qdev->mailbox_in + i,
 186                                                 mbcp->mbox_in[i]);
 187                 if (status)
 188                         goto end;
 189         }
 190         /*
 191          * Wake up the MPI firmware.
 192          */
 193         ql_write32(qdev, CSR, CSR_CMD_SET_H2R_INT);
 194 end:
 195         ql_sem_unlock(qdev, SEM_PROC_REG_MASK);
 196         return status;
 197 }
 198
 199 /* We are being asked by firmware to accept
 200  * a change to the port.  This is only
 201  * a change to max frame sizes (Tx/Rx), pause
 202  * parameters, or loopback mode. We wake up a worker
 203  * to handler processing this since a mailbox command
 204  * will need to be sent to ACK the request.
 205  */
 206 static int ql_idc_req_aen(struct ql_adapter *qdev)
 207 {
 208         int status;
 209         struct mbox_params *mbcp = &qdev->idc_mbc;
 210
 211         netif_err(qdev, drv, qdev->ndev, "Enter!\n");
 212         /* Get the status data and start up a thread to
 213          * handle the request.
 214          */
 215         mbcp = &qdev->idc_mbc;
 216         mbcp->out_count = 4;
 217         status = ql_get_mb_sts(qdev, mbcp);
 218         if (status) {
 219                 netif_err(qdev, drv, qdev->ndev,
 220                           "Could not read MPI, resetting ASIC!\n");
 221                 ql_queue_asic_error(qdev);
 222         } else  {
 223                 /* Begin polled mode early so
 224                  * we don't get another interrupt
 225                  * when we leave mpi_worker.
 226                  */
 227                 ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
 228                 queue_delayed_work(qdev->workqueue, &qdev->mpi_idc_work, 0);
 229         }
 230         return status;
 231 }
 232
 233 /* Process an inter-device event completion.
 234  * If good, signal the caller's completion.
 235  */
 236 static int ql_idc_cmplt_aen(struct ql_adapter *qdev)
 237 {
 238         int status;
 239         struct mbox_params *mbcp = &qdev->idc_mbc;
 240         mbcp->out_count = 4;
 241         status = ql_get_mb_sts(qdev, mbcp);
 242         if (status) {
 243                 netif_err(qdev, drv, qdev->ndev,
 244                           "Could not read MPI, resetting RISC!\n");
 245                 ql_queue_fw_error(qdev);
 246         } else
 247                 /* Wake up the sleeping mpi_idc_work thread that is
 248                  * waiting for this event.
 249                  */
 250                 complete(&qdev->ide_completion);
 251
 252         return status;
 253 }
 254
 255 static void ql_link_up(struct ql_adapter *qdev, struct mbox_params *mbcp)
 256 {
 257         int status;
 258         mbcp->out_count = 2;
 259
 260         status = ql_get_mb_sts(qdev, mbcp);
 261         if (status) {
 262                 netif_err(qdev, drv, qdev->ndev,
 263                           "%s: Could not get mailbox status.\n", __func__);
 264                 return;
 265         }
 266
 267         qdev->link_status = mbcp->mbox_out[1];
 268         netif_err(qdev, drv, qdev->ndev, "Link Up.\n");
 269
 270         /* If we're coming back from an IDC event
 271          * then set up the CAM and frame routing.
 272          */
 273         if (test_bit(QL_CAM_RT_SET, &qdev->flags)) {
 274                 status = ql_cam_route_initialize(qdev);
 275                 if (status) {
 276                         netif_err(qdev, ifup, qdev->ndev,
 277                                   "Failed to init CAM/Routing tables.\n");
 278                         return;
 279                 } else
 280                         clear_bit(QL_CAM_RT_SET, &qdev->flags);
 281         }
 282
 283         /* Queue up a worker to check the frame
 284          * size information, and fix it if it's not
 285          * to our liking.
 286          */
 287         if (!test_bit(QL_PORT_CFG, &qdev->flags)) {
 288                 netif_err(qdev, drv, qdev->ndev, "Queue Port Config Worker!\n");
 289                 set_bit(QL_PORT_CFG, &qdev->flags);
 290                 /* Begin polled mode early so
 291                  * we don't get another interrupt
 292                  * when we leave mpi_worker dpc.
 293                  */
 294                 ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
 295                 queue_delayed_work(qdev->workqueue,
 296                                 &qdev->mpi_port_cfg_work, 0);
 297         }
 298
 299         ql_link_on(qdev);
 300 }
 301
 302 static void ql_link_down(struct ql_adapter *qdev, struct mbox_params *mbcp)
 303 {
 304         int status;
 305
 306         mbcp->out_count = 3;
 307
 308         status = ql_get_mb_sts(qdev, mbcp);
 309         if (status)
 310                 netif_err(qdev, drv, qdev->ndev, "Link down AEN broken!\n");
 311
 312         ql_link_off(qdev);
 313 }
 314
 315 static int ql_sfp_in(struct ql_adapter *qdev, struct mbox_params *mbcp)
 316 {
 317         int status;
 318
 319         mbcp->out_count = 5;
 320
 321         status = ql_get_mb_sts(qdev, mbcp);
 322         if (status)
 323                 netif_err(qdev, drv, qdev->ndev, "SFP in AEN broken!\n");
 324         else
 325                 netif_err(qdev, drv, qdev->ndev, "SFP insertion detected.\n");
 326
 327         return status;
 328 }
 329
 330 static int ql_sfp_out(struct ql_adapter *qdev, struct mbox_params *mbcp)
 331 {
 332         int status;
 333
 334         mbcp->out_count = 1;
 335
 336         status = ql_get_mb_sts(qdev, mbcp);
 337         if (status)
 338                 netif_err(qdev, drv, qdev->ndev, "SFP out AEN broken!\n");
 339         else
 340                 netif_err(qdev, drv, qdev->ndev, "SFP removal detected.\n");
 341
 342         return status;
 343 }
 344
 345 static int ql_aen_lost(struct ql_adapter *qdev, struct mbox_params *mbcp)
 346 {
 347         int status;
 348
 349         mbcp->out_count = 6;
 350
 351         status = ql_get_mb_sts(qdev, mbcp);
 352         if (status)
 353                 netif_err(qdev, drv, qdev->ndev, "Lost AEN broken!\n");
 354         else {
 355                 int i;
 356                 netif_err(qdev, drv, qdev->ndev, "Lost AEN detected.\n");
 357                 for (i = 0; i < mbcp->out_count; i++)
 358                         netif_err(qdev, drv, qdev->ndev, "mbox_out[%d] = 0x%.08x.\n",
 359                                   i, mbcp->mbox_out[i]);
 360
 361         }
 362
 363         return status;
 364 }
 365
 366 static void ql_init_fw_done(struct ql_adapter *qdev, struct mbox_params *mbcp)
 367 {
 368         int status;
 369
 370         mbcp->out_count = 2;
 371
 372         status = ql_get_mb_sts(qdev, mbcp);
 373         if (status) {
 374                 netif_err(qdev, drv, qdev->ndev, "Firmware did not initialize!\n");
 375         } else {
 376                 netif_err(qdev, drv, qdev->ndev, "Firmware Revision  = 0x%.08x.\n",
 377                           mbcp->mbox_out[1]);
 378                 qdev->fw_rev_id = mbcp->mbox_out[1];
 379                 status = ql_cam_route_initialize(qdev);
 380                 if (status)
 381                         netif_err(qdev, ifup, qdev->ndev,
 382                                   "Failed to init CAM/Routing tables.\n");
 383         }
 384 }
 385
 386 /* Process an async event and clear it unless it's an
 387  * error condition.
 388  *  This can get called iteratively from the mpi_work thread
 389  *  when events arrive via an interrupt.
 390  *  It also gets called when a mailbox command is polling for
 391  *  it's completion. */
 392 static int ql_mpi_handler(struct ql_adapter *qdev, struct mbox_params *mbcp)
 393 {
 394         int status;
 395         int orig_count = mbcp->out_count;
 396
 397         /* Just get mailbox zero for now. */
 398         mbcp->out_count = 1;
 399         status = ql_get_mb_sts(qdev, mbcp);
 400         if (status) {
 401                 netif_err(qdev, drv, qdev->ndev,
 402                           "Could not read MPI, resetting ASIC!\n");
 403                 ql_queue_asic_error(qdev);
 404                 goto end;
 405         }
 406
 407         switch (mbcp->mbox_out[0]) {
 408
 409         /* This case is only active when we arrive here
 410          * as a result of issuing a mailbox command to
 411          * the firmware.
 412          */
 413         case MB_CMD_STS_INTRMDT:
 414         case MB_CMD_STS_GOOD:
 415         case MB_CMD_STS_INVLD_CMD:
 416         case MB_CMD_STS_XFC_ERR:
 417         case MB_CMD_STS_CSUM_ERR:
 418         case MB_CMD_STS_ERR:
 419         case MB_CMD_STS_PARAM_ERR:
 420                 /* We can only get mailbox status if we're polling from an
 421                  * unfinished command.  Get the rest of the status data and
 422                  * return back to the caller.
 423                  * We only end up here when we're polling for a mailbox
 424                  * command completion.
 425                  */
 426                 mbcp->out_count = orig_count;
 427                 status = ql_get_mb_sts(qdev, mbcp);
 428                 return status;
 429
 430         /* We are being asked by firmware to accept
 431          * a change to the port.  This is only
 432          * a change to max frame sizes (Tx/Rx), pause
 433          * parameters, or loopback mode.
 434          */
 435         case AEN_IDC_REQ:
 436                 status = ql_idc_req_aen(qdev);
 437                 break;
 438
 439         /* Process and inbound IDC event.
 440          * This will happen when we're trying to
 441          * change tx/rx max frame size, change pause
 442          * parameters or loopback mode.
 443          */
 444         case AEN_IDC_CMPLT:
 445         case AEN_IDC_EXT:
 446                 status = ql_idc_cmplt_aen(qdev);
 447                 break;
 448
 449         case AEN_LINK_UP:
 450                 ql_link_up(qdev, mbcp);
 451                 break;
 452
 453         case AEN_LINK_DOWN:
 454                 ql_link_down(qdev, mbcp);
 455                 break;
 456
 457         case AEN_FW_INIT_DONE:
 458                 /* If we're in process on executing the firmware,
 459                  * then convert the status to normal mailbox status.
 460                  */
 461                 if (mbcp->mbox_in[0] == MB_CMD_EX_FW) {
 462                         mbcp->out_count = orig_count;
 463                         status = ql_get_mb_sts(qdev, mbcp);
 464                         mbcp->mbox_out[0] = MB_CMD_STS_GOOD;
 465                         return status;
 466                 }
 467                 ql_init_fw_done(qdev, mbcp);
 468                 break;
 469
 470         case AEN_AEN_SFP_IN:
 471                 ql_sfp_in(qdev, mbcp);
 472                 break;
 473
 474         case AEN_AEN_SFP_OUT:
 475                 ql_sfp_out(qdev, mbcp);
 476                 break;
 477
 478         /* This event can arrive at boot time or after an
 479          * MPI reset if the firmware failed to initialize.
 480          */
 481         case AEN_FW_INIT_FAIL:
 482                 /* If we're in process on executing the firmware,
 483                  * then convert the status to normal mailbox status.
 484                  */
 485                 if (mbcp->mbox_in[0] == MB_CMD_EX_FW) {
 486                         mbcp->out_count = orig_count;
 487                         status = ql_get_mb_sts(qdev, mbcp);
 488                         mbcp->mbox_out[0] = MB_CMD_STS_ERR;
 489                         return status;
 490                 }
 491                 netif_err(qdev, drv, qdev->ndev,
 492                           "Firmware initialization failed.\n");
 493                 status = -EIO;
 494                 ql_queue_fw_error(qdev);
 495                 break;
 496
 497         case AEN_SYS_ERR:
 498                 netif_err(qdev, drv, qdev->ndev, "System Error.\n");
 499                 ql_queue_fw_error(qdev);
 500                 status = -EIO;
 501                 break;
 502
 503         case AEN_AEN_LOST:
 504                 ql_aen_lost(qdev, mbcp);
 505                 break;
 506
 507         case AEN_DCBX_CHG:
 508                 /* Need to support AEN 8110 */
 509                 break;
 510         default:
 511                 netif_err(qdev, drv, qdev->ndev,
 512                           "Unsupported AE %.08x.\n", mbcp->mbox_out[0]);
 513                 /* Clear the MPI firmware status. */
 514         }
 515 end:
 516         ql_write32(qdev, CSR, CSR_CMD_CLR_R2PCI_INT);
 517         /* Restore the original mailbox count to
 518          * what the caller asked for.  This can get
 519          * changed when a mailbox command is waiting
 520          * for a response and an AEN arrives and
 521          * is handled.
 522          * */
 523         mbcp->out_count = orig_count;
 524         return status;
 525 }
 526
 527 /* Execute a single mailbox command.
 528  * mbcp is a pointer to an array of u32.  Each
 529  * element in the array contains the value for it's
 530  * respective mailbox register.
 531  */
 532 static int ql_mailbox_command(struct ql_adapter *qdev, struct mbox_params *mbcp)
 533 {
 534         int status;
 535         unsigned long count;
 536
 537
 538         /* Begin polled mode for MPI */
 539         ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
 540
 541         /* Load the mailbox registers and wake up MPI RISC. */
 542         status = ql_exec_mb_cmd(qdev, mbcp);
 543         if (status)
 544                 goto end;
 545
 546
 547         /* If we're generating a system error, then there's nothing
 548          * to wait for.
 549          */
 550         if (mbcp->mbox_in[0] == MB_CMD_MAKE_SYS_ERR)
 551                 goto end;
 552
 553         /* Wait for the command to complete. We loop
 554          * here because some AEN might arrive while
 555          * we're waiting for the mailbox command to
 556          * complete. If more than 5 seconds expire we can
 557          * assume something is wrong. */
 558         count = jiffies + HZ * MAILBOX_TIMEOUT;
 559         do {
 560                 /* Wait for the interrupt to come in. */
 561                 status = ql_wait_mbx_cmd_cmplt(qdev);
 562                 if (status)
 563                         continue;
 564
 565                 /* Process the event.  If it's an AEN, it
 566                  * will be handled in-line or a worker
 567                  * will be spawned. If it's our completion
 568                  * we will catch it below.
 569                  */
 570                 status = ql_mpi_handler(qdev, mbcp);
 571                 if (status)
 572                         goto end;
 573
 574                 /* It's either the completion for our mailbox
 575                  * command complete or an AEN.  If it's our
 576                  * completion then get out.
 577                  */
 578                 if (((mbcp->mbox_out[0] & 0x0000f000) ==
 579                                         MB_CMD_STS_GOOD) ||
 580                         ((mbcp->mbox_out[0] & 0x0000f000) ==
 581                                         MB_CMD_STS_INTRMDT))
 582                         goto done;
 583         } while (time_before(jiffies, count));
 584
 585         netif_err(qdev, drv, qdev->ndev,
 586                   "Timed out waiting for mailbox complete.\n");
 587         status = -ETIMEDOUT;
 588         goto end;
 589
 590 done:
 591
 592         /* Now we can clear the interrupt condition
 593          * and look at our status.
 594          */
 595         ql_write32(qdev, CSR, CSR_CMD_CLR_R2PCI_INT);
 596
 597         if (((mbcp->mbox_out[0] & 0x0000f000) !=
 598                                         MB_CMD_STS_GOOD) &&
 599                 ((mbcp->mbox_out[0] & 0x0000f000) !=
 600                                         MB_CMD_STS_INTRMDT)) {
 601                 status = -EIO;
 602         }
 603 end:
 604         /* End polled mode for MPI */
 605         ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16) | INTR_MASK_PI);
 606         return status;
 607 }
 608
 609 /* Get MPI firmware version. This will be used for
 610  * driver banner and for ethtool info.
 611  * Returns zero on success.
 612  */
 613 int ql_mb_about_fw(struct ql_adapter *qdev)
 614 {
 615         struct mbox_params mbc;
 616         struct mbox_params *mbcp = &mbc;
 617         int status = 0;
 618
 619         memset(mbcp, 0, sizeof(struct mbox_params));
 620
 621         mbcp->in_count = 1;
 622         mbcp->out_count = 3;
 623
 624         mbcp->mbox_in[0] = MB_CMD_ABOUT_FW;
 625
 626         status = ql_mailbox_command(qdev, mbcp);
 627         if (status)
 628                 return status;
 629
 630         if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 631                 netif_err(qdev, drv, qdev->ndev,
 632                           "Failed about firmware command\n");
 633                 status = -EIO;
 634         }
 635
 636         /* Store the firmware version */
 637         qdev->fw_rev_id = mbcp->mbox_out[1];
 638
 639         return status;
 640 }
 641
 642 /* Get functional state for MPI firmware.
 643  * Returns zero on success.
 644  */
 645 int ql_mb_get_fw_state(struct ql_adapter *qdev)
 646 {
 647         struct mbox_params mbc;
 648         struct mbox_params *mbcp = &mbc;
 649         int status = 0;
 650
 651         memset(mbcp, 0, sizeof(struct mbox_params));
 652
 653         mbcp->in_count = 1;
 654         mbcp->out_count = 2;
 655
 656         mbcp->mbox_in[0] = MB_CMD_GET_FW_STATE;
 657
 658         status = ql_mailbox_command(qdev, mbcp);
 659         if (status)
 660                 return status;
 661
 662         if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 663                 netif_err(qdev, drv, qdev->ndev,
 664                           "Failed Get Firmware State.\n");
 665                 status = -EIO;
 666         }
 667
 668         /* If bit zero is set in mbx 1 then the firmware is
 669          * running, but not initialized.  This should never
 670          * happen.
 671          */
 672         if (mbcp->mbox_out[1] & 1) {
 673                 netif_err(qdev, drv, qdev->ndev,
 674                           "Firmware waiting for initialization.\n");
 675                 status = -EIO;
 676         }
 677
 678         return status;
 679 }
 680
 681 /* Send and ACK mailbox command to the firmware to
 682  * let it continue with the change.
 683  */
 684 static int ql_mb_idc_ack(struct ql_adapter *qdev)
 685 {
 686         struct mbox_params mbc;
 687         struct mbox_params *mbcp = &mbc;
 688         int status = 0;
 689
 690         memset(mbcp, 0, sizeof(struct mbox_params));
 691
 692         mbcp->in_count = 5;
 693         mbcp->out_count = 1;
 694
 695         mbcp->mbox_in[0] = MB_CMD_IDC_ACK;
 696         mbcp->mbox_in[1] = qdev->idc_mbc.mbox_out[1];
 697         mbcp->mbox_in[2] = qdev->idc_mbc.mbox_out[2];
 698         mbcp->mbox_in[3] = qdev->idc_mbc.mbox_out[3];
 699         mbcp->mbox_in[4] = qdev->idc_mbc.mbox_out[4];
 700
 701         status = ql_mailbox_command(qdev, mbcp);
 702         if (status)
 703                 return status;
 704
 705         if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 706                 netif_err(qdev, drv, qdev->ndev, "Failed IDC ACK send.\n");
 707                 status = -EIO;
 708         }
 709         return status;
 710 }
 711
 712 /* Get link settings and maximum frame size settings
 713  * for the current port.
 714  * Most likely will block.
 715  */
 716 int ql_mb_set_port_cfg(struct ql_adapter *qdev)
 717 {
 718         struct mbox_params mbc;
 719         struct mbox_params *mbcp = &mbc;
 720         int status = 0;
 721
 722         memset(mbcp, 0, sizeof(struct mbox_params));
 723
 724         mbcp->in_count = 3;
 725         mbcp->out_count = 1;
 726
 727         mbcp->mbox_in[0] = MB_CMD_SET_PORT_CFG;
 728         mbcp->mbox_in[1] = qdev->link_config;
 729         mbcp->mbox_in[2] = qdev->max_frame_size;
 730
 731
 732         status = ql_mailbox_command(qdev, mbcp);
 733         if (status)
 734                 return status;
 735
 736         if (mbcp->mbox_out[0] == MB_CMD_STS_INTRMDT) {
 737                 netif_err(qdev, drv, qdev->ndev,
 738                           "Port Config sent, wait for IDC.\n");
 739         } else  if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 740                 netif_err(qdev, drv, qdev->ndev,
 741                           "Failed Set Port Configuration.\n");
 742                 status = -EIO;
 743         }
 744         return status;
 745 }
 746
 747 static int ql_mb_dump_ram(struct ql_adapter *qdev, u64 req_dma, u32 addr,
 748         u32 size)
 749 {
 750         int status = 0;
 751         struct mbox_params mbc;
 752         struct mbox_params *mbcp = &mbc;
 753
 754         memset(mbcp, 0, sizeof(struct mbox_params));
 755
 756         mbcp->in_count = 9;
 757         mbcp->out_count = 1;
 758
 759         mbcp->mbox_in[0] = MB_CMD_DUMP_RISC_RAM;
 760         mbcp->mbox_in[1] = LSW(addr);
 761         mbcp->mbox_in[2] = MSW(req_dma);
 762         mbcp->mbox_in[3] = LSW(req_dma);
 763         mbcp->mbox_in[4] = MSW(size);
 764         mbcp->mbox_in[5] = LSW(size);
 765         mbcp->mbox_in[6] = MSW(MSD(req_dma));
 766         mbcp->mbox_in[7] = LSW(MSD(req_dma));
 767         mbcp->mbox_in[8] = MSW(addr);
 768
 769
 770         status = ql_mailbox_command(qdev, mbcp);
 771         if (status)
 772                 return status;
 773
 774         if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 775                 netif_err(qdev, drv, qdev->ndev, "Failed to dump risc RAM.\n");
 776                 status = -EIO;
 777         }
 778         return status;
 779 }
 780
 781 /* Issue a mailbox command to dump RISC RAM. */
 782 int ql_dump_risc_ram_area(struct ql_adapter *qdev, void *buf,
 783                 u32 ram_addr, int word_count)
 784 {
 785         int status;
 786         char *my_buf;
 787         dma_addr_t buf_dma;
 788
 789         my_buf = pci_alloc_consistent(qdev->pdev, word_count * sizeof(u32),
 790                                         &buf_dma);
 791         if (!my_buf)
 792                 return -EIO;
 793
 794         status = ql_mb_dump_ram(qdev, buf_dma, ram_addr, word_count);
 795         if (!status)
 796                 memcpy(buf, my_buf, word_count * sizeof(u32));
 797
 798         pci_free_consistent(qdev->pdev, word_count * sizeof(u32), my_buf,
 799                                 buf_dma);
 800         return status;
 801 }
 802
 803 /* Get link settings and maximum frame size settings
 804  * for the current port.
 805  * Most likely will block.
 806  */
 807 int ql_mb_get_port_cfg(struct ql_adapter *qdev)
 808 {
 809         struct mbox_params mbc;
 810         struct mbox_params *mbcp = &mbc;
 811         int status = 0;
 812
 813         memset(mbcp, 0, sizeof(struct mbox_params));
 814
 815         mbcp->in_count = 1;
 816         mbcp->out_count = 3;
 817
 818         mbcp->mbox_in[0] = MB_CMD_GET_PORT_CFG;
 819
 820         status = ql_mailbox_command(qdev, mbcp);
 821         if (status)
 822                 return status;
 823
 824         if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 825                 netif_err(qdev, drv, qdev->ndev,
 826                           "Failed Get Port Configuration.\n");
 827                 status = -EIO;
 828         } else  {
 829                 netif_printk(qdev, drv, KERN_DEBUG, qdev->ndev,
 830                              "Passed Get Port Configuration.\n");
 831                 qdev->link_config = mbcp->mbox_out[1];
 832                 qdev->max_frame_size = mbcp->mbox_out[2];
 833         }
 834         return status;
 835 }
 836
 837 int ql_mb_wol_mode(struct ql_adapter *qdev, u32 wol)
 838 {
 839         struct mbox_params mbc;
 840         struct mbox_params *mbcp = &mbc;
 841         int status;
 842
 843         memset(mbcp, 0, sizeof(struct mbox_params));
 844
 845         mbcp->in_count = 2;
 846         mbcp->out_count = 1;
 847
 848         mbcp->mbox_in[0] = MB_CMD_SET_WOL_MODE;
 849         mbcp->mbox_in[1] = wol;
 850
 851
 852         status = ql_mailbox_command(qdev, mbcp);
 853         if (status)
 854                 return status;
 855
 856         if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 857                 netif_err(qdev, drv, qdev->ndev, "Failed to set WOL mode.\n");
 858                 status = -EIO;
 859         }
 860         return status;
 861 }
 862
 863 int ql_mb_wol_set_magic(struct ql_adapter *qdev, u32 enable_wol)
 864 {
 865         struct mbox_params mbc;
 866         struct mbox_params *mbcp = &mbc;
 867         int status;
 868         u8 *addr = qdev->ndev->dev_addr;
 869
 870         memset(mbcp, 0, sizeof(struct mbox_params));
 871
 872         mbcp->in_count = 8;
 873         mbcp->out_count = 1;
 874
 875         mbcp->mbox_in[0] = MB_CMD_SET_WOL_MAGIC;
 876         if (enable_wol) {
 877                 mbcp->mbox_in[1] = (u32)addr[0];
 878                 mbcp->mbox_in[2] = (u32)addr[1];
 879                 mbcp->mbox_in[3] = (u32)addr[2];
 880                 mbcp->mbox_in[4] = (u32)addr[3];
 881                 mbcp->mbox_in[5] = (u32)addr[4];
 882                 mbcp->mbox_in[6] = (u32)addr[5];
 883                 mbcp->mbox_in[7] = 0;
 884         } else {
 885                 mbcp->mbox_in[1] = 0;
 886                 mbcp->mbox_in[2] = 1;
 887                 mbcp->mbox_in[3] = 1;
 888                 mbcp->mbox_in[4] = 1;
 889                 mbcp->mbox_in[5] = 1;
 890                 mbcp->mbox_in[6] = 1;
 891                 mbcp->mbox_in[7] = 0;
 892         }
 893
 894         status = ql_mailbox_command(qdev, mbcp);
 895         if (status)
 896                 return status;
 897
 898         if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 899                 netif_err(qdev, drv, qdev->ndev, "Failed to set WOL mode.\n");
 900                 status = -EIO;
 901         }
 902         return status;
 903 }
 904
 905 /* IDC - Inter Device Communication...
 906  * Some firmware commands require consent of adjacent FCOE
 907  * function.  This function waits for the OK, or a
 908  * counter-request for a little more time.i
 909  * The firmware will complete the request if the other
 910  * function doesn't respond.
 911  */
 912 static int ql_idc_wait(struct ql_adapter *qdev)
 913 {
 914         int status = -ETIMEDOUT;
 915         long wait_time = 1 * HZ;
 916         struct mbox_params *mbcp = &qdev->idc_mbc;
 917         do {
 918                 /* Wait here for the command to complete
 919                  * via the IDC process.
 920                  */
 921                 wait_time =
 922                         wait_for_completion_timeout(&qdev->ide_completion,
 923                                                         wait_time);
 924                 if (!wait_time) {
 925                         netif_err(qdev, drv, qdev->ndev, "IDC Timeout.\n");
 926                         break;
 927                 }
 928                 /* Now examine the response from the IDC process.
 929                  * We might have a good completion or a request for
 930                  * more wait time.
 931                  */
 932                 if (mbcp->mbox_out[0] == AEN_IDC_EXT) {
 933                         netif_err(qdev, drv, qdev->ndev,
 934                                   "IDC Time Extension from function.\n");
 935                         wait_time += (mbcp->mbox_out[1] >> 8) & 0x0000000f;
 936                 } else if (mbcp->mbox_out[0] == AEN_IDC_CMPLT) {
 937                         netif_err(qdev, drv, qdev->ndev, "IDC Success.\n");
 938                         status = 0;
 939                         break;
 940                 } else {
 941                         netif_err(qdev, drv, qdev->ndev,
 942                                   "IDC: Invalid State 0x%.04x.\n",
 943                                   mbcp->mbox_out[0]);
 944                         status = -EIO;
 945                         break;
 946                 }
 947         } while (wait_time);
 948
 949         return status;
 950 }
 951
 952 int ql_mb_set_led_cfg(struct ql_adapter *qdev, u32 led_config)
 953 {
 954         struct mbox_params mbc;
 955         struct mbox_params *mbcp = &mbc;
 956         int status;
 957
 958         memset(mbcp, 0, sizeof(struct mbox_params));
 959
 960         mbcp->in_count = 2;
 961         mbcp->out_count = 1;
 962
 963         mbcp->mbox_in[0] = MB_CMD_SET_LED_CFG;
 964         mbcp->mbox_in[1] = led_config;
 965
 966
 967         status = ql_mailbox_command(qdev, mbcp);
 968         if (status)
 969                 return status;
 970
 971         if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 972                 netif_err(qdev, drv, qdev->ndev,
 973                           "Failed to set LED Configuration.\n");
 974                 status = -EIO;
 975         }
 976
 977         return status;
 978 }
 979
 980 int ql_mb_get_led_cfg(struct ql_adapter *qdev)
 981 {
 982         struct mbox_params mbc;
 983         struct mbox_params *mbcp = &mbc;
 984         int status;
 985
 986         memset(mbcp, 0, sizeof(struct mbox_params));
 987
 988         mbcp->in_count = 1;
 989         mbcp->out_count = 2;
 990
 991         mbcp->mbox_in[0] = MB_CMD_GET_LED_CFG;
 992
 993         status = ql_mailbox_command(qdev, mbcp);
 994         if (status)
 995                 return status;
 996
 997         if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 998                 netif_err(qdev, drv, qdev->ndev,
 999                           "Failed to get LED Configuration.\n");
1000                 status = -EIO;
1001         } else
1002                 qdev->led_config = mbcp->mbox_out[1];
1003
1004         return status;
1005 }
1006
1007 int ql_mb_set_mgmnt_traffic_ctl(struct ql_adapter *qdev, u32 control)
1008 {
1009         struct mbox_params mbc;
1010         struct mbox_params *mbcp = &mbc;
1011         int status;
1012
1013         memset(mbcp, 0, sizeof(struct mbox_params));
1014
1015         mbcp->in_count = 1;
1016         mbcp->out_count = 2;
1017
1018         mbcp->mbox_in[0] = MB_CMD_SET_MGMNT_TFK_CTL;
1019         mbcp->mbox_in[1] = control;
1020
1021         status = ql_mailbox_command(qdev, mbcp);
1022         if (status)
1023                 return status;
1024
1025         if (mbcp->mbox_out[0] == MB_CMD_STS_GOOD)
1026                 return status;
1027
1028         if (mbcp->mbox_out[0] == MB_CMD_STS_INVLD_CMD) {
1029                 netif_err(qdev, drv, qdev->ndev,
1030                           "Command not supported by firmware.\n");
1031                 status = -EINVAL;
1032         } else if (mbcp->mbox_out[0] == MB_CMD_STS_ERR) {
1033                 /* This indicates that the firmware is
1034                  * already in the state we are trying to
1035                  * change it to.
1036                  */
1037                 netif_err(qdev, drv, qdev->ndev,
1038                           "Command parameters make no change.\n");
1039         }
1040         return status;
1041 }
1042
1043 /* Returns a negative error code or the mailbox command status. */
1044 static int ql_mb_get_mgmnt_traffic_ctl(struct ql_adapter *qdev, u32 *control)
1045 {
1046         struct mbox_params mbc;
1047         struct mbox_params *mbcp = &mbc;
1048         int status;
1049
1050         memset(mbcp, 0, sizeof(struct mbox_params));
1051         *control = 0;
1052
1053         mbcp->in_count = 1;
1054         mbcp->out_count = 1;
1055
1056         mbcp->mbox_in[0] = MB_CMD_GET_MGMNT_TFK_CTL;
1057
1058         status = ql_mailbox_command(qdev, mbcp);
1059         if (status)
1060                 return status;
1061
1062         if (mbcp->mbox_out[0] == MB_CMD_STS_GOOD) {
1063                 *control = mbcp->mbox_in[1];
1064                 return status;
1065         }
1066
1067         if (mbcp->mbox_out[0] == MB_CMD_STS_INVLD_CMD) {
1068                 netif_err(qdev, drv, qdev->ndev,
1069                           "Command not supported by firmware.\n");
1070                 status = -EINVAL;
1071         } else if (mbcp->mbox_out[0] == MB_CMD_STS_ERR) {
1072                 netif_err(qdev, drv, qdev->ndev,
1073                           "Failed to get MPI traffic control.\n");
1074                 status = -EIO;
1075         }
1076         return status;
1077 }
1078
1079 int ql_wait_fifo_empty(struct ql_adapter *qdev)
1080 {
1081         int count = 5;
1082         u32 mgmnt_fifo_empty;
1083         u32 nic_fifo_empty;
1084
1085         do {
1086                 nic_fifo_empty = ql_read32(qdev, STS) & STS_NFE;
1087                 ql_mb_get_mgmnt_traffic_ctl(qdev, &mgmnt_fifo_empty);
1088                 mgmnt_fifo_empty &= MB_GET_MPI_TFK_FIFO_EMPTY;
1089                 if (nic_fifo_empty && mgmnt_fifo_empty)
1090                         return 0;
1091                 msleep(100);
1092         } while (count-- > 0);
1093         return -ETIMEDOUT;
1094 }
1095
1096 /* API called in work thread context to set new TX/RX
1097  * maximum frame size values to match MTU.
1098  */
1099 static int ql_set_port_cfg(struct ql_adapter *qdev)
1100 {
1101         int status;
1102         rtnl_lock();
1103         status = ql_mb_set_port_cfg(qdev);
1104         rtnl_unlock();
1105         if (status)
1106                 return status;
1107         status = ql_idc_wait(qdev);
1108         return status;
1109 }
1110
1111 /* The following routines are worker threads that process
1112  * events that may sleep waiting for completion.
1113  */
1114
1115 /* This thread gets the maximum TX and RX frame size values
1116  * from the firmware and, if necessary, changes them to match
1117  * the MTU setting.
1118  */
1119 void ql_mpi_port_cfg_work(struct work_struct *work)
1120 {
1121         struct ql_adapter *qdev =
1122             container_of(work, struct ql_adapter, mpi_port_cfg_work.work);
1123         int status;
1124
1125         rtnl_lock();
1126         status = ql_mb_get_port_cfg(qdev);
1127         rtnl_unlock();
1128         if (status) {
1129                 netif_err(qdev, drv, qdev->ndev,
1130                           "Bug: Failed to get port config data.\n");
1131                 goto err;
1132         }
1133
1134         if (qdev->link_config & CFG_JUMBO_FRAME_SIZE &&
1135                         qdev->max_frame_size ==
1136                         CFG_DEFAULT_MAX_FRAME_SIZE)
1137                 goto end;
1138
1139         qdev->link_config |=    CFG_JUMBO_FRAME_SIZE;
1140         qdev->max_frame_size = CFG_DEFAULT_MAX_FRAME_SIZE;
1141         status = ql_set_port_cfg(qdev);
1142         if (status) {
1143                 netif_err(qdev, drv, qdev->ndev,
1144                           "Bug: Failed to set port config data.\n");
1145                 goto err;
1146         }
1147 end:
1148         clear_bit(QL_PORT_CFG, &qdev->flags);
1149         return;
1150 err:
1151         ql_queue_fw_error(qdev);
1152         goto end;
1153 }
1154
1155 /* Process an inter-device request.  This is issues by
1156  * the firmware in response to another function requesting
1157  * a change to the port. We set a flag to indicate a change
1158  * has been made and then send a mailbox command ACKing
1159  * the change request.
1160  */
1161 void ql_mpi_idc_work(struct work_struct *work)
1162 {
1163         struct ql_adapter *qdev =
1164             container_of(work, struct ql_adapter, mpi_idc_work.work);
1165         int status;
1166         struct mbox_params *mbcp = &qdev->idc_mbc;
1167         u32 aen;
1168         int timeout;
1169
1170         rtnl_lock();
1171         aen = mbcp->mbox_out[1] >> 16;
1172         timeout = (mbcp->mbox_out[1] >> 8) & 0xf;
1173
1174         switch (aen) {
1175         default:
1176                 netif_err(qdev, drv, qdev->ndev,
1177                           "Bug: Unhandled IDC action.\n");
1178                 break;
1179         case MB_CMD_PORT_RESET:
1180         case MB_CMD_STOP_FW:
1181                 ql_link_off(qdev);
1182         case MB_CMD_SET_PORT_CFG:
1183                 /* Signal the resulting link up AEN
1184                  * that the frame routing and mac addr
1185                  * needs to be set.
1186                  * */
1187                 set_bit(QL_CAM_RT_SET, &qdev->flags);
1188                 /* Do ACK if required */
1189                 if (timeout) {
1190                         status = ql_mb_idc_ack(qdev);
1191                         if (status)
1192                                 netif_err(qdev, drv, qdev->ndev,
1193                                           "Bug: No pending IDC!\n");
1194                 } else {
1195                         netif_printk(qdev, drv, KERN_DEBUG, qdev->ndev,
1196                                      "IDC ACK not required\n");
1197                         status = 0; /* success */
1198                 }
1199                 break;
1200
1201         /* These sub-commands issued by another (FCoE)
1202          * function are requesting to do an operation
1203          * on the shared resource (MPI environment).
1204          * We currently don't issue these so we just
1205          * ACK the request.
1206          */
1207         case MB_CMD_IOP_RESTART_MPI:
1208         case MB_CMD_IOP_PREP_LINK_DOWN:
1209                 /* Drop the link, reload the routing
1210                  * table when link comes up.
1211                  */
1212                 ql_link_off(qdev);
1213                 set_bit(QL_CAM_RT_SET, &qdev->flags);
1214                 /* Fall through. */
1215         case MB_CMD_IOP_DVR_START:
1216         case MB_CMD_IOP_FLASH_ACC:
1217         case MB_CMD_IOP_CORE_DUMP_MPI:
1218         case MB_CMD_IOP_PREP_UPDATE_MPI:
1219         case MB_CMD_IOP_COMP_UPDATE_MPI:
1220         case MB_CMD_IOP_NONE:   /*  an IDC without params */
1221                 /* Do ACK if required */
1222                 if (timeout) {
1223                         status = ql_mb_idc_ack(qdev);
1224                         if (status)
1225                                 netif_err(qdev, drv, qdev->ndev,
1226                                           "Bug: No pending IDC!\n");
1227                 } else {
1228                         netif_printk(qdev, drv, KERN_DEBUG, qdev->ndev,
1229                                      "IDC ACK not required\n");
1230                         status = 0; /* success */
1231                 }
1232                 break;
1233         }
1234         rtnl_unlock();
1235 }
1236
1237 void ql_mpi_work(struct work_struct *work)
1238 {
1239         struct ql_adapter *qdev =
1240             container_of(work, struct ql_adapter, mpi_work.work);
1241         struct mbox_params mbc;
1242         struct mbox_params *mbcp = &mbc;
1243         int err = 0;
1244
1245         rtnl_lock();
1246         /* Begin polled mode for MPI */
1247         ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
1248
1249         while (ql_read32(qdev, STS) & STS_PI) {
1250                 memset(mbcp, 0, sizeof(struct mbox_params));
1251                 mbcp->out_count = 1;
1252                 /* Don't continue if an async event
1253                  * did not complete properly.
1254                  */
1255                 err = ql_mpi_handler(qdev, mbcp);
1256                 if (err)
1257                         break;
1258         }
1259
1260         /* End polled mode for MPI */
1261         ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16) | INTR_MASK_PI);
1262         rtnl_unlock();
1263         ql_enable_completion_interrupt(qdev, 0);
1264 }
1265
1266 void ql_mpi_reset_work(struct work_struct *work)
1267 {
1268         struct ql_adapter *qdev =
1269             container_of(work, struct ql_adapter, mpi_reset_work.work);
1270         cancel_delayed_work_sync(&qdev->mpi_work);
1271         cancel_delayed_work_sync(&qdev->mpi_port_cfg_work);
1272         cancel_delayed_work_sync(&qdev->mpi_idc_work);
1273         /* If we're not the dominant NIC function,
1274          * then there is nothing to do.
1275          */
1276         if (!ql_own_firmware(qdev)) {
1277                 netif_err(qdev, drv, qdev->ndev, "Don't own firmware!\n");
1278                 return;
1279         }
1280
1281         if (!ql_core_dump(qdev, qdev->mpi_coredump)) {
1282                 netif_err(qdev, drv, qdev->ndev, "Core is dumped!\n");
1283                 qdev->core_is_dumped = 1;
1284                 queue_delayed_work(qdev->workqueue,
1285                         &qdev->mpi_core_to_log, 5 * HZ);
1286         }
1287         ql_soft_reset_mpi_risc(qdev);
1288 }