drivers/net/qlge/qlge_mpi.c

   1 #include "qlge.h"
   2
   3 static void ql_display_mb_sts(struct ql_adapter *qdev,
   4                                                 struct mbox_params *mbcp)
   5 {
   6         int i;
   7         static char *err_sts[] = {
   8                 "Command Complete",
   9                 "Command Not Supported",
  10                 "Host Interface Error",
  11                 "Checksum Error",
  12                 "Unused Completion Status",
  13                 "Test Failed",
  14                 "Command Parameter Error"};
  15
  16         QPRINTK(qdev, DRV, DEBUG, "%s.\n",
  17                 err_sts[mbcp->mbox_out[0] & 0x0000000f]);
  18         for (i = 0; i < mbcp->out_count; i++)
  19                 QPRINTK(qdev, DRV, DEBUG, "mbox_out[%d] = 0x%.08x.\n",
  20                                 i, mbcp->mbox_out[i]);
  21 }
  22
  23 int ql_read_mpi_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
  24 {
  25         int status;
  26         /* wait for reg to come ready */
  27         status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
  28         if (status)
  29                 goto exit;
  30         /* set up for reg read */
  31         ql_write32(qdev, PROC_ADDR, reg | PROC_ADDR_R);
  32         /* wait for reg to come ready */
  33         status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
  34         if (status)
  35                 goto exit;
  36         /* get the data */
  37         *data = ql_read32(qdev, PROC_DATA);
  38 exit:
  39         return status;
  40 }
  41
  42 int ql_write_mpi_reg(struct ql_adapter *qdev, u32 reg, u32 data)
  43 {
  44         int status = 0;
  45         /* wait for reg to come ready */
  46         status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
  47         if (status)
  48                 goto exit;
  49         /* write the data to the data reg */
  50         ql_write32(qdev, PROC_DATA, data);
  51         /* trigger the write */
  52         ql_write32(qdev, PROC_ADDR, reg);
  53         /* wait for reg to come ready */
  54         status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
  55         if (status)
  56                 goto exit;
  57 exit:
  58         return status;
  59 }
  60
  61 int ql_soft_reset_mpi_risc(struct ql_adapter *qdev)
  62 {
  63         int status;
  64         status = ql_write_mpi_reg(qdev, 0x00001010, 1);
  65         return status;
  66 }
  67
  68 static int ql_get_mb_sts(struct ql_adapter *qdev, struct mbox_params *mbcp)
  69 {
  70         int i, status;
  71
  72         status = ql_sem_spinlock(qdev, SEM_PROC_REG_MASK);
  73         if (status)
  74                 return -EBUSY;
  75         for (i = 0; i < mbcp->out_count; i++) {
  76                 status =
  77                     ql_read_mpi_reg(qdev, qdev->mailbox_out + i,
  78                                      &mbcp->mbox_out[i]);
  79                 if (status) {
  80                         QPRINTK(qdev, DRV, ERR, "Failed mailbox read.\n");
  81                         break;
  82                 }
  83         }
  84         ql_sem_unlock(qdev, SEM_PROC_REG_MASK); /* does flush too */
  85         return status;
  86 }
  87
  88 /* Wait for a single mailbox command to complete.
  89  * Returns zero on success.
  90  */
  91 static int ql_wait_mbx_cmd_cmplt(struct ql_adapter *qdev)
  92 {
  93         int count = 50; /* TODO: arbitrary for now. */
  94         u32 value;
  95
  96         do {
  97                 value = ql_read32(qdev, STS);
  98                 if (value & STS_PI)
  99                         return 0;
 100                 udelay(UDELAY_DELAY); /* 10us */
 101         } while (--count);
 102         return -ETIMEDOUT;
 103 }
 104
 105 /* Execute a single mailbox command.
 106  * Caller must hold PROC_ADDR semaphore.
 107  */
 108 static int ql_exec_mb_cmd(struct ql_adapter *qdev, struct mbox_params *mbcp)
 109 {
 110         int i, status;
 111
 112         /*
 113          * Make sure there's nothing pending.
 114          * This shouldn't happen.
 115          */
 116         if (ql_read32(qdev, CSR) & CSR_HRI)
 117                 return -EIO;
 118
 119         status = ql_sem_spinlock(qdev, SEM_PROC_REG_MASK);
 120         if (status)
 121                 return status;
 122
 123         /*
 124          * Fill the outbound mailboxes.
 125          */
 126         for (i = 0; i < mbcp->in_count; i++) {
 127                 status = ql_write_mpi_reg(qdev, qdev->mailbox_in + i,
 128                                                 mbcp->mbox_in[i]);
 129                 if (status)
 130                         goto end;
 131         }
 132         /*
 133          * Wake up the MPI firmware.
 134          */
 135         ql_write32(qdev, CSR, CSR_CMD_SET_H2R_INT);
 136 end:
 137         ql_sem_unlock(qdev, SEM_PROC_REG_MASK);
 138         return status;
 139 }
 140
 141 /* We are being asked by firmware to accept
 142  * a change to the port.  This is only
 143  * a change to max frame sizes (Tx/Rx), pause
 144  * paramters, or loopback mode. We wake up a worker
 145  * to handler processing this since a mailbox command
 146  * will need to be sent to ACK the request.
 147  */
 148 static int ql_idc_req_aen(struct ql_adapter *qdev)
 149 {
 150         int status;
 151         struct mbox_params *mbcp = &qdev->idc_mbc;
 152
 153         QPRINTK(qdev, DRV, ERR, "Enter!\n");
 154         /* Get the status data and start up a thread to
 155          * handle the request.
 156          */
 157         mbcp = &qdev->idc_mbc;
 158         mbcp->out_count = 4;
 159         status = ql_get_mb_sts(qdev, mbcp);
 160         if (status) {
 161                 QPRINTK(qdev, DRV, ERR,
 162                         "Could not read MPI, resetting ASIC!\n");
 163                 ql_queue_asic_error(qdev);
 164         } else  {
 165                 /* Begin polled mode early so
 166                  * we don't get another interrupt
 167                  * when we leave mpi_worker.
 168                  */
 169                 ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
 170                 queue_delayed_work(qdev->workqueue, &qdev->mpi_idc_work, 0);
 171         }
 172         return status;
 173 }
 174
 175 /* Process an inter-device event completion.
 176  * If good, signal the caller's completion.
 177  */
 178 static int ql_idc_cmplt_aen(struct ql_adapter *qdev)
 179 {
 180         int status;
 181         struct mbox_params *mbcp = &qdev->idc_mbc;
 182         mbcp->out_count = 4;
 183         status = ql_get_mb_sts(qdev, mbcp);
 184         if (status) {
 185                 QPRINTK(qdev, DRV, ERR,
 186                         "Could not read MPI, resetting RISC!\n");
 187                 ql_queue_fw_error(qdev);
 188         } else
 189                 /* Wake up the sleeping mpi_idc_work thread that is
 190                  * waiting for this event.
 191                  */
 192                 complete(&qdev->ide_completion);
 193
 194         return status;
 195 }
 196
 197 static void ql_link_up(struct ql_adapter *qdev, struct mbox_params *mbcp)
 198 {
 199         int status;
 200         mbcp->out_count = 2;
 201
 202         status = ql_get_mb_sts(qdev, mbcp);
 203         if (status) {
 204                 QPRINTK(qdev, DRV, ERR,
 205                         "%s: Could not get mailbox status.\n", __func__);
 206                 return;
 207         }
 208
 209         qdev->link_status = mbcp->mbox_out[1];
 210         QPRINTK(qdev, DRV, ERR, "Link Up.\n");
 211
 212         /* If we're coming back from an IDC event
 213          * then set up the CAM and frame routing.
 214          */
 215         if (test_bit(QL_CAM_RT_SET, &qdev->flags)) {
 216                 status = ql_cam_route_initialize(qdev);
 217                 if (status) {
 218                         QPRINTK(qdev, IFUP, ERR,
 219                         "Failed to init CAM/Routing tables.\n");
 220                         return;
 221                 } else
 222                         clear_bit(QL_CAM_RT_SET, &qdev->flags);
 223         }
 224
 225         /* Queue up a worker to check the frame
 226          * size information, and fix it if it's not
 227          * to our liking.
 228          */
 229         if (!test_bit(QL_PORT_CFG, &qdev->flags)) {
 230                 QPRINTK(qdev, DRV, ERR, "Queue Port Config Worker!\n");
 231                 set_bit(QL_PORT_CFG, &qdev->flags);
 232                 /* Begin polled mode early so
 233                  * we don't get another interrupt
 234                  * when we leave mpi_worker dpc.
 235                  */
 236                 ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
 237                 queue_delayed_work(qdev->workqueue,
 238                                 &qdev->mpi_port_cfg_work, 0);
 239         }
 240
 241         netif_carrier_on(qdev->ndev);
 242 }
 243
 244 static void ql_link_down(struct ql_adapter *qdev, struct mbox_params *mbcp)
 245 {
 246         int status;
 247
 248         mbcp->out_count = 3;
 249
 250         status = ql_get_mb_sts(qdev, mbcp);
 251         if (status)
 252                 QPRINTK(qdev, DRV, ERR, "Link down AEN broken!\n");
 253
 254         netif_carrier_off(qdev->ndev);
 255 }
 256
 257 static int ql_sfp_in(struct ql_adapter *qdev, struct mbox_params *mbcp)
 258 {
 259         int status;
 260
 261         mbcp->out_count = 5;
 262
 263         status = ql_get_mb_sts(qdev, mbcp);
 264         if (status)
 265                 QPRINTK(qdev, DRV, ERR, "SFP in AEN broken!\n");
 266         else
 267                 QPRINTK(qdev, DRV, ERR, "SFP insertion detected.\n");
 268
 269         return status;
 270 }
 271
 272 static int ql_sfp_out(struct ql_adapter *qdev, struct mbox_params *mbcp)
 273 {
 274         int status;
 275
 276         mbcp->out_count = 1;
 277
 278         status = ql_get_mb_sts(qdev, mbcp);
 279         if (status)
 280                 QPRINTK(qdev, DRV, ERR, "SFP out AEN broken!\n");
 281         else
 282                 QPRINTK(qdev, DRV, ERR, "SFP removal detected.\n");
 283
 284         return status;
 285 }
 286
 287 static int ql_aen_lost(struct ql_adapter *qdev, struct mbox_params *mbcp)
 288 {
 289         int status;
 290
 291         mbcp->out_count = 6;
 292
 293         status = ql_get_mb_sts(qdev, mbcp);
 294         if (status)
 295                 QPRINTK(qdev, DRV, ERR, "Lost AEN broken!\n");
 296         else {
 297                 int i;
 298                 QPRINTK(qdev, DRV, ERR, "Lost AEN detected.\n");
 299                 for (i = 0; i < mbcp->out_count; i++)
 300                         QPRINTK(qdev, DRV, ERR, "mbox_out[%d] = 0x%.08x.\n",
 301                                         i, mbcp->mbox_out[i]);
 302
 303         }
 304
 305         return status;
 306 }
 307
 308 static void ql_init_fw_done(struct ql_adapter *qdev, struct mbox_params *mbcp)
 309 {
 310         int status;
 311
 312         mbcp->out_count = 2;
 313
 314         status = ql_get_mb_sts(qdev, mbcp);
 315         if (status) {
 316                 QPRINTK(qdev, DRV, ERR, "Firmware did not initialize!\n");
 317         } else {
 318                 QPRINTK(qdev, DRV, ERR, "Firmware Revision  = 0x%.08x.\n",
 319                         mbcp->mbox_out[1]);
 320                 status = ql_cam_route_initialize(qdev);
 321                 if (status)
 322                         QPRINTK(qdev, IFUP, ERR,
 323                                 "Failed to init CAM/Routing tables.\n");
 324         }
 325 }
 326
 327 /* Process an async event and clear it unless it's an
 328  * error condition.
 329  *  This can get called iteratively from the mpi_work thread
 330  *  when events arrive via an interrupt.
 331  *  It also gets called when a mailbox command is polling for
 332  *  it's completion. */
 333 static int ql_mpi_handler(struct ql_adapter *qdev, struct mbox_params *mbcp)
 334 {
 335         int status;
 336         int orig_count = mbcp->out_count;
 337
 338         /* Just get mailbox zero for now. */
 339         mbcp->out_count = 1;
 340         status = ql_get_mb_sts(qdev, mbcp);
 341         if (status) {
 342                 QPRINTK(qdev, DRV, ERR,
 343                         "Could not read MPI, resetting ASIC!\n");
 344                 ql_queue_asic_error(qdev);
 345                 goto end;
 346         }
 347
 348         switch (mbcp->mbox_out[0]) {
 349
 350         /* This case is only active when we arrive here
 351          * as a result of issuing a mailbox command to
 352          * the firmware.
 353          */
 354         case MB_CMD_STS_INTRMDT:
 355         case MB_CMD_STS_GOOD:
 356         case MB_CMD_STS_INVLD_CMD:
 357         case MB_CMD_STS_XFC_ERR:
 358         case MB_CMD_STS_CSUM_ERR:
 359         case MB_CMD_STS_ERR:
 360         case MB_CMD_STS_PARAM_ERR:
 361                 /* We can only get mailbox status if we're polling from an
 362                  * unfinished command.  Get the rest of the status data and
 363                  * return back to the caller.
 364                  * We only end up here when we're polling for a mailbox
 365                  * command completion.
 366                  */
 367                 mbcp->out_count = orig_count;
 368                 status = ql_get_mb_sts(qdev, mbcp);
 369                 return status;
 370
 371         /* We are being asked by firmware to accept
 372          * a change to the port.  This is only
 373          * a change to max frame sizes (Tx/Rx), pause
 374          * paramters, or loopback mode.
 375          */
 376         case AEN_IDC_REQ:
 377                 status = ql_idc_req_aen(qdev);
 378                 break;
 379
 380         /* Process and inbound IDC event.
 381          * This will happen when we're trying to
 382          * change tx/rx max frame size, change pause
 383          * paramters or loopback mode.
 384          */
 385         case AEN_IDC_CMPLT:
 386         case AEN_IDC_EXT:
 387                 status = ql_idc_cmplt_aen(qdev);
 388                 break;
 389
 390         case AEN_LINK_UP:
 391                 ql_link_up(qdev, mbcp);
 392                 break;
 393
 394         case AEN_LINK_DOWN:
 395                 ql_link_down(qdev, mbcp);
 396                 break;
 397
 398         case AEN_FW_INIT_DONE:
 399                 /* If we're in process on executing the firmware,
 400                  * then convert the status to normal mailbox status.
 401                  */
 402                 if (mbcp->mbox_in[0] == MB_CMD_EX_FW) {
 403                         mbcp->out_count = orig_count;
 404                         status = ql_get_mb_sts(qdev, mbcp);
 405                         mbcp->mbox_out[0] = MB_CMD_STS_GOOD;
 406                         return status;
 407                 }
 408                 ql_init_fw_done(qdev, mbcp);
 409                 break;
 410
 411         case AEN_AEN_SFP_IN:
 412                 ql_sfp_in(qdev, mbcp);
 413                 break;
 414
 415         case AEN_AEN_SFP_OUT:
 416                 ql_sfp_out(qdev, mbcp);
 417                 break;
 418
 419         /* This event can arrive at boot time or after an
 420          * MPI reset if the firmware failed to initialize.
 421          */
 422         case AEN_FW_INIT_FAIL:
 423                 /* If we're in process on executing the firmware,
 424                  * then convert the status to normal mailbox status.
 425                  */
 426                 if (mbcp->mbox_in[0] == MB_CMD_EX_FW) {
 427                         mbcp->out_count = orig_count;
 428                         status = ql_get_mb_sts(qdev, mbcp);
 429                         mbcp->mbox_out[0] = MB_CMD_STS_ERR;
 430                         return status;
 431                 }
 432                 QPRINTK(qdev, DRV, ERR,
 433                         "Firmware initialization failed.\n");
 434                 status = -EIO;
 435                 ql_queue_fw_error(qdev);
 436                 break;
 437
 438         case AEN_SYS_ERR:
 439                 QPRINTK(qdev, DRV, ERR,
 440                         "System Error.\n");
 441                 ql_queue_fw_error(qdev);
 442                 status = -EIO;
 443                 break;
 444
 445         case AEN_AEN_LOST:
 446                 ql_aen_lost(qdev, mbcp);
 447                 break;
 448
 449         default:
 450                 QPRINTK(qdev, DRV, ERR,
 451                         "Unsupported AE %.08x.\n", mbcp->mbox_out[0]);
 452                 /* Clear the MPI firmware status. */
 453         }
 454 end:
 455         ql_write32(qdev, CSR, CSR_CMD_CLR_R2PCI_INT);
 456         return status;
 457 }
 458
 459 /* Execute a single mailbox command.
 460  * mbcp is a pointer to an array of u32.  Each
 461  * element in the array contains the value for it's
 462  * respective mailbox register.
 463  */
 464 static int ql_mailbox_command(struct ql_adapter *qdev, struct mbox_params *mbcp)
 465 {
 466         int status, count;
 467
 468         mutex_lock(&qdev->mpi_mutex);
 469
 470         /* Begin polled mode for MPI */
 471         ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
 472
 473         /* Load the mailbox registers and wake up MPI RISC. */
 474         status = ql_exec_mb_cmd(qdev, mbcp);
 475         if (status)
 476                 goto end;
 477
 478
 479         /* If we're generating a system error, then there's nothing
 480          * to wait for.
 481          */
 482         if (mbcp->mbox_in[0] == MB_CMD_MAKE_SYS_ERR)
 483                 goto end;
 484
 485         /* Wait for the command to complete. We loop
 486          * here because some AEN might arrive while
 487          * we're waiting for the mailbox command to
 488          * complete. If more than 5 arrive then we can
 489          * assume something is wrong. */
 490         count = 5;
 491         do {
 492                 /* Wait for the interrupt to come in. */
 493                 status = ql_wait_mbx_cmd_cmplt(qdev);
 494                 if (status)
 495                         goto end;
 496
 497                 /* Process the event.  If it's an AEN, it
 498                  * will be handled in-line or a worker
 499                  * will be spawned. If it's our completion
 500                  * we will catch it below.
 501                  */
 502                 status = ql_mpi_handler(qdev, mbcp);
 503                 if (status)
 504                         goto end;
 505
 506                 /* It's either the completion for our mailbox
 507                  * command complete or an AEN.  If it's our
 508                  * completion then get out.
 509                  */
 510                 if (((mbcp->mbox_out[0] & 0x0000f000) ==
 511                                         MB_CMD_STS_GOOD) ||
 512                         ((mbcp->mbox_out[0] & 0x0000f000) ==
 513                                         MB_CMD_STS_INTRMDT))
 514                         break;
 515         } while (--count);
 516
 517         if (!count) {
 518                 QPRINTK(qdev, DRV, ERR,
 519                         "Timed out waiting for mailbox complete.\n");
 520                 status = -ETIMEDOUT;
 521                 goto end;
 522         }
 523
 524         /* Now we can clear the interrupt condition
 525          * and look at our status.
 526          */
 527         ql_write32(qdev, CSR, CSR_CMD_CLR_R2PCI_INT);
 528
 529         if (((mbcp->mbox_out[0] & 0x0000f000) !=
 530                                         MB_CMD_STS_GOOD) &&
 531                 ((mbcp->mbox_out[0] & 0x0000f000) !=
 532                                         MB_CMD_STS_INTRMDT)) {
 533                 ql_display_mb_sts(qdev, mbcp);
 534                 status = -EIO;
 535         }
 536 end:
 537         mutex_unlock(&qdev->mpi_mutex);
 538         /* End polled mode for MPI */
 539         ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16) | INTR_MASK_PI);
 540         return status;
 541 }
 542
 543 /* Get functional state for MPI firmware.
 544  * Returns zero on success.
 545  */
 546 int ql_mb_get_fw_state(struct ql_adapter *qdev)
 547 {
 548         struct mbox_params mbc;
 549         struct mbox_params *mbcp = &mbc;
 550         int status = 0;
 551
 552         memset(mbcp, 0, sizeof(struct mbox_params));
 553
 554         mbcp->in_count = 1;
 555         mbcp->out_count = 2;
 556
 557         mbcp->mbox_in[0] = MB_CMD_GET_FW_STATE;
 558
 559         status = ql_mailbox_command(qdev, mbcp);
 560         if (status)
 561                 return status;
 562
 563         if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 564                 QPRINTK(qdev, DRV, ERR,
 565                         "Failed Get Firmware State.\n");
 566                 status = -EIO;
 567         }
 568
 569         /* If bit zero is set in mbx 1 then the firmware is
 570          * running, but not initialized.  This should never
 571          * happen.
 572          */
 573         if (mbcp->mbox_out[1] & 1) {
 574                 QPRINTK(qdev, DRV, ERR,
 575                         "Firmware waiting for initialization.\n");
 576                 status = -EIO;
 577         }
 578
 579         return status;
 580 }
 581
 582 /* Send and ACK mailbox command to the firmware to
 583  * let it continue with the change.
 584  */
 585 int ql_mb_idc_ack(struct ql_adapter *qdev)
 586 {
 587         struct mbox_params mbc;
 588         struct mbox_params *mbcp = &mbc;
 589         int status = 0;
 590
 591         memset(mbcp, 0, sizeof(struct mbox_params));
 592
 593         mbcp->in_count = 5;
 594         mbcp->out_count = 1;
 595
 596         mbcp->mbox_in[0] = MB_CMD_IDC_ACK;
 597         mbcp->mbox_in[1] = qdev->idc_mbc.mbox_out[1];
 598         mbcp->mbox_in[2] = qdev->idc_mbc.mbox_out[2];
 599         mbcp->mbox_in[3] = qdev->idc_mbc.mbox_out[3];
 600         mbcp->mbox_in[4] = qdev->idc_mbc.mbox_out[4];
 601
 602         status = ql_mailbox_command(qdev, mbcp);
 603         if (status)
 604                 return status;
 605
 606         if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 607                 QPRINTK(qdev, DRV, ERR,
 608                         "Failed IDC ACK send.\n");
 609                 status = -EIO;
 610         }
 611         return status;
 612 }
 613
 614 /* Get link settings and maximum frame size settings
 615  * for the current port.
 616  * Most likely will block.
 617  */
 618 static int ql_mb_set_port_cfg(struct ql_adapter *qdev)
 619 {
 620         struct mbox_params mbc;
 621         struct mbox_params *mbcp = &mbc;
 622         int status = 0;
 623
 624         memset(mbcp, 0, sizeof(struct mbox_params));
 625
 626         mbcp->in_count = 3;
 627         mbcp->out_count = 1;
 628
 629         mbcp->mbox_in[0] = MB_CMD_SET_PORT_CFG;
 630         mbcp->mbox_in[1] = qdev->link_config;
 631         mbcp->mbox_in[2] = qdev->max_frame_size;
 632
 633
 634         status = ql_mailbox_command(qdev, mbcp);
 635         if (status)
 636                 return status;
 637
 638         if (mbcp->mbox_out[0] == MB_CMD_STS_INTRMDT) {
 639                 QPRINTK(qdev, DRV, ERR,
 640                         "Port Config sent, wait for IDC.\n");
 641         } else  if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 642                 QPRINTK(qdev, DRV, ERR,
 643                         "Failed Set Port Configuration.\n");
 644                 status = -EIO;
 645         }
 646         return status;
 647 }
 648
 649 /* Get link settings and maximum frame size settings
 650  * for the current port.
 651  * Most likely will block.
 652  */
 653 static int ql_mb_get_port_cfg(struct ql_adapter *qdev)
 654 {
 655         struct mbox_params mbc;
 656         struct mbox_params *mbcp = &mbc;
 657         int status = 0;
 658
 659         memset(mbcp, 0, sizeof(struct mbox_params));
 660
 661         mbcp->in_count = 1;
 662         mbcp->out_count = 3;
 663
 664         mbcp->mbox_in[0] = MB_CMD_GET_PORT_CFG;
 665
 666         status = ql_mailbox_command(qdev, mbcp);
 667         if (status)
 668                 return status;
 669
 670         if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
 671                 QPRINTK(qdev, DRV, ERR,
 672                         "Failed Get Port Configuration.\n");
 673                 status = -EIO;
 674         } else  {
 675                 QPRINTK(qdev, DRV, DEBUG,
 676                         "Passed Get Port Configuration.\n");
 677                 qdev->link_config = mbcp->mbox_out[1];
 678                 qdev->max_frame_size = mbcp->mbox_out[2];
 679         }
 680         return status;
 681 }
 682
 683 /* IDC - Inter Device Communication...
 684  * Some firmware commands require consent of adjacent FCOE
 685  * function.  This function waits for the OK, or a
 686  * counter-request for a little more time.i
 687  * The firmware will complete the request if the other
 688  * function doesn't respond.
 689  */
 690 static int ql_idc_wait(struct ql_adapter *qdev)
 691 {
 692         int status = -ETIMEDOUT;
 693         long wait_time = 1 * HZ;
 694         struct mbox_params *mbcp = &qdev->idc_mbc;
 695         do {
 696                 /* Wait here for the command to complete
 697                  * via the IDC process.
 698                  */
 699                 wait_time =
 700                         wait_for_completion_timeout(&qdev->ide_completion,
 701                                                         wait_time);
 702                 if (!wait_time) {
 703                         QPRINTK(qdev, DRV, ERR,
 704                                 "IDC Timeout.\n");
 705                         break;
 706                 }
 707                 /* Now examine the response from the IDC process.
 708                  * We might have a good completion or a request for
 709                  * more wait time.
 710                  */
 711                 if (mbcp->mbox_out[0] == AEN_IDC_EXT) {
 712                         QPRINTK(qdev, DRV, ERR,
 713                                 "IDC Time Extension from function.\n");
 714                         wait_time += (mbcp->mbox_out[1] >> 8) & 0x0000000f;
 715                 } else if (mbcp->mbox_out[0] == AEN_IDC_CMPLT) {
 716                         QPRINTK(qdev, DRV, ERR,
 717                                 "IDC Success.\n");
 718                         status = 0;
 719                         break;
 720                 } else {
 721                         QPRINTK(qdev, DRV, ERR,
 722                                 "IDC: Invalid State 0x%.04x.\n",
 723                                 mbcp->mbox_out[0]);
 724                         status = -EIO;
 725                         break;
 726                 }
 727         } while (wait_time);
 728
 729         return status;
 730 }
 731
 732 /* API called in work thread context to set new TX/RX
 733  * maximum frame size values to match MTU.
 734  */
 735 static int ql_set_port_cfg(struct ql_adapter *qdev)
 736 {
 737         int status;
 738         status = ql_mb_set_port_cfg(qdev);
 739         if (status)
 740                 return status;
 741         status = ql_idc_wait(qdev);
 742         return status;
 743 }
 744
 745 /* The following routines are worker threads that process
 746  * events that may sleep waiting for completion.
 747  */
 748
 749 /* This thread gets the maximum TX and RX frame size values
 750  * from the firmware and, if necessary, changes them to match
 751  * the MTU setting.
 752  */
 753 void ql_mpi_port_cfg_work(struct work_struct *work)
 754 {
 755         struct ql_adapter *qdev =
 756             container_of(work, struct ql_adapter, mpi_port_cfg_work.work);
 757         struct net_device *ndev = qdev->ndev;
 758         int status;
 759
 760         status = ql_mb_get_port_cfg(qdev);
 761         if (status) {
 762                 QPRINTK(qdev, DRV, ERR,
 763                         "Bug: Failed to get port config data.\n");
 764                 goto err;
 765         }
 766
 767         if (ndev->mtu <= 2500)
 768                 goto end;
 769         else if (qdev->link_config & CFG_JUMBO_FRAME_SIZE &&
 770                         qdev->max_frame_size ==
 771                         CFG_DEFAULT_MAX_FRAME_SIZE)
 772                 goto end;
 773
 774         qdev->link_config |=    CFG_JUMBO_FRAME_SIZE;
 775         qdev->max_frame_size = CFG_DEFAULT_MAX_FRAME_SIZE;
 776         status = ql_set_port_cfg(qdev);
 777         if (status) {
 778                 QPRINTK(qdev, DRV, ERR,
 779                         "Bug: Failed to set port config data.\n");
 780                 goto err;
 781         }
 782 end:
 783         clear_bit(QL_PORT_CFG, &qdev->flags);
 784         return;
 785 err:
 786         ql_queue_fw_error(qdev);
 787         goto end;
 788 }
 789
 790 /* Process an inter-device request.  This is issues by
 791  * the firmware in response to another function requesting
 792  * a change to the port. We set a flag to indicate a change
 793  * has been made and then send a mailbox command ACKing
 794  * the change request.
 795  */
 796 void ql_mpi_idc_work(struct work_struct *work)
 797 {
 798         struct ql_adapter *qdev =
 799             container_of(work, struct ql_adapter, mpi_idc_work.work);
 800         int status;
 801         struct mbox_params *mbcp = &qdev->idc_mbc;
 802         u32 aen;
 803
 804         aen = mbcp->mbox_out[1] >> 16;
 805
 806         switch (aen) {
 807         default:
 808                 QPRINTK(qdev, DRV, ERR,
 809                         "Bug: Unhandled IDC action.\n");
 810                 break;
 811         case MB_CMD_PORT_RESET:
 812         case MB_CMD_SET_PORT_CFG:
 813         case MB_CMD_STOP_FW:
 814                 netif_carrier_off(qdev->ndev);
 815                 /* Signal the resulting link up AEN
 816                  * that the frame routing and mac addr
 817                  * needs to be set.
 818                  * */
 819                 set_bit(QL_CAM_RT_SET, &qdev->flags);
 820                 status = ql_mb_idc_ack(qdev);
 821                 if (status) {
 822                         QPRINTK(qdev, DRV, ERR,
 823                         "Bug: No pending IDC!\n");
 824                 }
 825         }
 826 }
 827
 828 void ql_mpi_work(struct work_struct *work)
 829 {
 830         struct ql_adapter *qdev =
 831             container_of(work, struct ql_adapter, mpi_work.work);
 832         struct mbox_params mbc;
 833         struct mbox_params *mbcp = &mbc;
 834
 835         mutex_lock(&qdev->mpi_mutex);
 836
 837         while (ql_read32(qdev, STS) & STS_PI) {
 838                 memset(mbcp, 0, sizeof(struct mbox_params));
 839                 mbcp->out_count = 1;
 840                 ql_mpi_handler(qdev, mbcp);
 841         }
 842
 843         mutex_unlock(&qdev->mpi_mutex);
 844         ql_enable_completion_interrupt(qdev, 0);
 845 }
 846
 847 void ql_mpi_reset_work(struct work_struct *work)
 848 {
 849         struct ql_adapter *qdev =
 850             container_of(work, struct ql_adapter, mpi_reset_work.work);
 851         cancel_delayed_work_sync(&qdev->mpi_work);
 852         cancel_delayed_work_sync(&qdev->mpi_port_cfg_work);
 853         cancel_delayed_work_sync(&qdev->mpi_idc_work);
 854         ql_soft_reset_mpi_risc(qdev);
 855 }