drivers/net/ethernet/qlogic/qed/qed_main.c

   1 /* QLogic qed NIC Driver
   2  * Copyright (c) 2015 QLogic Corporation
   3  *
   4  * This software is available under the terms of the GNU General Public License
   5  * (GPL) Version 2, available from the file COPYING in the main directory of
   6  * this source tree.
   7  */
   8
   9 #include <linux/stddef.h>
  10 #include <linux/pci.h>
  11 #include <linux/kernel.h>
  12 #include <linux/slab.h>
  13 #include <linux/version.h>
  14 #include <linux/delay.h>
  15 #include <asm/byteorder.h>
  16 #include <linux/dma-mapping.h>
  17 #include <linux/string.h>
  18 #include <linux/module.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/workqueue.h>
  21 #include <linux/ethtool.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/vmalloc.h>
  24 #include <linux/qed/qed_if.h>
  25
  26 #include "qed.h"
  27 #include "qed_sp.h"
  28 #include "qed_dev_api.h"
  29 #include "qed_mcp.h"
  30 #include "qed_hw.h"
  31
  32 static char version[] =
  33         "QLogic FastLinQ 4xxxx Core Module qed " DRV_MODULE_VERSION "\n";
  34
  35 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx Core Module");
  36 MODULE_LICENSE("GPL");
  37 MODULE_VERSION(DRV_MODULE_VERSION);
  38
  39 #define FW_FILE_VERSION                         \
  40         __stringify(FW_MAJOR_VERSION) "."       \
  41         __stringify(FW_MINOR_VERSION) "."       \
  42         __stringify(FW_REVISION_VERSION) "."    \
  43         __stringify(FW_ENGINEERING_VERSION)
  44
  45 #define QED_FW_FILE_NAME        \
  46         "qed/qed_init_values_zipped-" FW_FILE_VERSION ".bin"
  47
  48 MODULE_FIRMWARE(QED_FW_FILE_NAME);
  49
  50 static int __init qed_init(void)
  51 {
  52         pr_notice("qed_init called\n");
  53
  54         pr_info("%s", version);
  55
  56         return 0;
  57 }
  58
  59 static void __exit qed_cleanup(void)
  60 {
  61         pr_notice("qed_cleanup called\n");
  62 }
  63
  64 module_init(qed_init);
  65 module_exit(qed_cleanup);
  66
  67 /* Check if the DMA controller on the machine can properly handle the DMA
  68  * addressing required by the device.
  69 */
  70 static int qed_set_coherency_mask(struct qed_dev *cdev)
  71 {
  72         struct device *dev = &cdev->pdev->dev;
  73
  74         if (dma_set_mask(dev, DMA_BIT_MASK(64)) == 0) {
  75                 if (dma_set_coherent_mask(dev, DMA_BIT_MASK(64)) != 0) {
  76                         DP_NOTICE(cdev,
  77                                   "Can't request 64-bit consistent allocations\n");
  78                         return -EIO;
  79                 }
  80         } else if (dma_set_mask(dev, DMA_BIT_MASK(32)) != 0) {
  81                 DP_NOTICE(cdev, "Can't request 64b/32b DMA addresses\n");
  82                 return -EIO;
  83         }
  84
  85         return 0;
  86 }
  87
  88 static void qed_free_pci(struct qed_dev *cdev)
  89 {
  90         struct pci_dev *pdev = cdev->pdev;
  91
  92         if (cdev->doorbells)
  93                 iounmap(cdev->doorbells);
  94         if (cdev->regview)
  95                 iounmap(cdev->regview);
  96         if (atomic_read(&pdev->enable_cnt) == 1)
  97                 pci_release_regions(pdev);
  98
  99         pci_disable_device(pdev);
 100 }
 101
 102 #define PCI_REVISION_ID_ERROR_VAL       0xff
 103
 104 /* Performs PCI initializations as well as initializing PCI-related parameters
 105  * in the device structrue. Returns 0 in case of success.
 106  */
 107 static int qed_init_pci(struct qed_dev *cdev,
 108                         struct pci_dev *pdev)
 109 {
 110         u8 rev_id;
 111         int rc;
 112
 113         cdev->pdev = pdev;
 114
 115         rc = pci_enable_device(pdev);
 116         if (rc) {
 117                 DP_NOTICE(cdev, "Cannot enable PCI device\n");
 118                 goto err0;
 119         }
 120
 121         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
 122                 DP_NOTICE(cdev, "No memory region found in bar #0\n");
 123                 rc = -EIO;
 124                 goto err1;
 125         }
 126
 127         if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
 128                 DP_NOTICE(cdev, "No memory region found in bar #2\n");
 129                 rc = -EIO;
 130                 goto err1;
 131         }
 132
 133         if (atomic_read(&pdev->enable_cnt) == 1) {
 134                 rc = pci_request_regions(pdev, "qed");
 135                 if (rc) {
 136                         DP_NOTICE(cdev,
 137                                   "Failed to request PCI memory resources\n");
 138                         goto err1;
 139                 }
 140                 pci_set_master(pdev);
 141                 pci_save_state(pdev);
 142         }
 143
 144         pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
 145         if (rev_id == PCI_REVISION_ID_ERROR_VAL) {
 146                 DP_NOTICE(cdev,
 147                           "Detected PCI device error [rev_id 0x%x]. Probably due to prior indication. Aborting.\n",
 148                           rev_id);
 149                 rc = -ENODEV;
 150                 goto err2;
 151         }
 152         if (!pci_is_pcie(pdev)) {
 153                 DP_NOTICE(cdev, "The bus is not PCI Express\n");
 154                 rc = -EIO;
 155                 goto err2;
 156         }
 157
 158         cdev->pci_params.pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
 159         if (cdev->pci_params.pm_cap == 0)
 160                 DP_NOTICE(cdev, "Cannot find power management capability\n");
 161
 162         rc = qed_set_coherency_mask(cdev);
 163         if (rc)
 164                 goto err2;
 165
 166         cdev->pci_params.mem_start = pci_resource_start(pdev, 0);
 167         cdev->pci_params.mem_end = pci_resource_end(pdev, 0);
 168         cdev->pci_params.irq = pdev->irq;
 169
 170         cdev->regview = pci_ioremap_bar(pdev, 0);
 171         if (!cdev->regview) {
 172                 DP_NOTICE(cdev, "Cannot map register space, aborting\n");
 173                 rc = -ENOMEM;
 174                 goto err2;
 175         }
 176
 177         cdev->db_phys_addr = pci_resource_start(cdev->pdev, 2);
 178         cdev->db_size = pci_resource_len(cdev->pdev, 2);
 179         cdev->doorbells = ioremap_wc(cdev->db_phys_addr, cdev->db_size);
 180         if (!cdev->doorbells) {
 181                 DP_NOTICE(cdev, "Cannot map doorbell space\n");
 182                 return -ENOMEM;
 183         }
 184
 185         return 0;
 186
 187 err2:
 188         pci_release_regions(pdev);
 189 err1:
 190         pci_disable_device(pdev);
 191 err0:
 192         return rc;
 193 }
 194
 195 int qed_fill_dev_info(struct qed_dev *cdev,
 196                       struct qed_dev_info *dev_info)
 197 {
 198         struct qed_ptt  *ptt;
 199
 200         memset(dev_info, 0, sizeof(struct qed_dev_info));
 201
 202         dev_info->num_hwfns = cdev->num_hwfns;
 203         dev_info->pci_mem_start = cdev->pci_params.mem_start;
 204         dev_info->pci_mem_end = cdev->pci_params.mem_end;
 205         dev_info->pci_irq = cdev->pci_params.irq;
 206         dev_info->is_mf_default = IS_MF_DEFAULT(&cdev->hwfns[0]);
 207         ether_addr_copy(dev_info->hw_mac, cdev->hwfns[0].hw_info.hw_mac_addr);
 208
 209         dev_info->fw_major = FW_MAJOR_VERSION;
 210         dev_info->fw_minor = FW_MINOR_VERSION;
 211         dev_info->fw_rev = FW_REVISION_VERSION;
 212         dev_info->fw_eng = FW_ENGINEERING_VERSION;
 213         dev_info->mf_mode = cdev->mf_mode;
 214
 215         qed_mcp_get_mfw_ver(cdev, &dev_info->mfw_rev);
 216
 217         ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev));
 218         if (ptt) {
 219                 qed_mcp_get_flash_size(QED_LEADING_HWFN(cdev), ptt,
 220                                        &dev_info->flash_size);
 221
 222                 qed_ptt_release(QED_LEADING_HWFN(cdev), ptt);
 223         }
 224
 225         return 0;
 226 }
 227
 228 static void qed_free_cdev(struct qed_dev *cdev)
 229 {
 230         kfree((void *)cdev);
 231 }
 232
 233 static struct qed_dev *qed_alloc_cdev(struct pci_dev *pdev)
 234 {
 235         struct qed_dev *cdev;
 236
 237         cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
 238         if (!cdev)
 239                 return cdev;
 240
 241         qed_init_struct(cdev);
 242
 243         return cdev;
 244 }
 245
 246 /* Sets the requested power state */
 247 static int qed_set_power_state(struct qed_dev *cdev,
 248                                pci_power_t state)
 249 {
 250         if (!cdev)
 251                 return -ENODEV;
 252
 253         DP_VERBOSE(cdev, NETIF_MSG_DRV, "Omitting Power state change\n");
 254         return 0;
 255 }
 256
 257 /* probing */
 258 static struct qed_dev *qed_probe(struct pci_dev *pdev,
 259                                  enum qed_protocol protocol,
 260                                  u32 dp_module,
 261                                  u8 dp_level)
 262 {
 263         struct qed_dev *cdev;
 264         int rc;
 265
 266         cdev = qed_alloc_cdev(pdev);
 267         if (!cdev)
 268                 goto err0;
 269
 270         cdev->protocol = protocol;
 271
 272         qed_init_dp(cdev, dp_module, dp_level);
 273
 274         rc = qed_init_pci(cdev, pdev);
 275         if (rc) {
 276                 DP_ERR(cdev, "init pci failed\n");
 277                 goto err1;
 278         }
 279         DP_INFO(cdev, "PCI init completed successfully\n");
 280
 281         rc = qed_hw_prepare(cdev, QED_PCI_DEFAULT);
 282         if (rc) {
 283                 DP_ERR(cdev, "hw prepare failed\n");
 284                 goto err2;
 285         }
 286
 287         DP_INFO(cdev, "qed_probe completed successffuly\n");
 288
 289         return cdev;
 290
 291 err2:
 292         qed_free_pci(cdev);
 293 err1:
 294         qed_free_cdev(cdev);
 295 err0:
 296         return NULL;
 297 }
 298
 299 static void qed_remove(struct qed_dev *cdev)
 300 {
 301         if (!cdev)
 302                 return;
 303
 304         qed_hw_remove(cdev);
 305
 306         qed_free_pci(cdev);
 307
 308         qed_set_power_state(cdev, PCI_D3hot);
 309
 310         qed_free_cdev(cdev);
 311 }
 312
 313 static void qed_disable_msix(struct qed_dev *cdev)
 314 {
 315         if (cdev->int_params.out.int_mode == QED_INT_MODE_MSIX) {
 316                 pci_disable_msix(cdev->pdev);
 317                 kfree(cdev->int_params.msix_table);
 318         } else if (cdev->int_params.out.int_mode == QED_INT_MODE_MSI) {
 319                 pci_disable_msi(cdev->pdev);
 320         }
 321
 322         memset(&cdev->int_params.out, 0, sizeof(struct qed_int_param));
 323 }
 324
 325 static int qed_enable_msix(struct qed_dev *cdev,
 326                            struct qed_int_params *int_params)
 327 {
 328         int i, rc, cnt;
 329
 330         cnt = int_params->in.num_vectors;
 331
 332         for (i = 0; i < cnt; i++)
 333                 int_params->msix_table[i].entry = i;
 334
 335         rc = pci_enable_msix_range(cdev->pdev, int_params->msix_table,
 336                                    int_params->in.min_msix_cnt, cnt);
 337         if (rc < cnt && rc >= int_params->in.min_msix_cnt &&
 338             (rc % cdev->num_hwfns)) {
 339                 pci_disable_msix(cdev->pdev);
 340
 341                 /* If fastpath is initialized, we need at least one interrupt
 342                  * per hwfn [and the slow path interrupts]. New requested number
 343                  * should be a multiple of the number of hwfns.
 344                  */
 345                 cnt = (rc / cdev->num_hwfns) * cdev->num_hwfns;
 346                 DP_NOTICE(cdev,
 347                           "Trying to enable MSI-X with less vectors (%d out of %d)\n",
 348                           cnt, int_params->in.num_vectors);
 349                 rc = pci_enable_msix_exact(cdev->pdev,
 350                                            int_params->msix_table, cnt);
 351                 if (!rc)
 352                         rc = cnt;
 353         }
 354
 355         if (rc > 0) {
 356                 /* MSI-x configuration was achieved */
 357                 int_params->out.int_mode = QED_INT_MODE_MSIX;
 358                 int_params->out.num_vectors = rc;
 359                 rc = 0;
 360         } else {
 361                 DP_NOTICE(cdev,
 362                           "Failed to enable MSI-X [Requested %d vectors][rc %d]\n",
 363                           cnt, rc);
 364         }
 365
 366         return rc;
 367 }
 368
 369 /* This function outputs the int mode and the number of enabled msix vector */
 370 static int qed_set_int_mode(struct qed_dev *cdev, bool force_mode)
 371 {
 372         struct qed_int_params *int_params = &cdev->int_params;
 373         struct msix_entry *tbl;
 374         int rc = 0, cnt;
 375
 376         switch (int_params->in.int_mode) {
 377         case QED_INT_MODE_MSIX:
 378                 /* Allocate MSIX table */
 379                 cnt = int_params->in.num_vectors;
 380                 int_params->msix_table = kcalloc(cnt, sizeof(*tbl), GFP_KERNEL);
 381                 if (!int_params->msix_table) {
 382                         rc = -ENOMEM;
 383                         goto out;
 384                 }
 385
 386                 /* Enable MSIX */
 387                 rc = qed_enable_msix(cdev, int_params);
 388                 if (!rc)
 389                         goto out;
 390
 391                 DP_NOTICE(cdev, "Failed to enable MSI-X\n");
 392                 kfree(int_params->msix_table);
 393                 if (force_mode)
 394                         goto out;
 395                 /* Fallthrough */
 396
 397         case QED_INT_MODE_MSI:
 398                 rc = pci_enable_msi(cdev->pdev);
 399                 if (!rc) {
 400                         int_params->out.int_mode = QED_INT_MODE_MSI;
 401                         goto out;
 402                 }
 403
 404                 DP_NOTICE(cdev, "Failed to enable MSI\n");
 405                 if (force_mode)
 406                         goto out;
 407                 /* Fallthrough */
 408
 409         case QED_INT_MODE_INTA:
 410                         int_params->out.int_mode = QED_INT_MODE_INTA;
 411                         rc = 0;
 412                         goto out;
 413         default:
 414                 DP_NOTICE(cdev, "Unknown int_mode value %d\n",
 415                           int_params->in.int_mode);
 416                 rc = -EINVAL;
 417         }
 418
 419 out:
 420         cdev->int_coalescing_mode = QED_COAL_MODE_ENABLE;
 421
 422         return rc;
 423 }
 424
 425 static void qed_simd_handler_config(struct qed_dev *cdev, void *token,
 426                                     int index, void(*handler)(void *))
 427 {
 428         struct qed_hwfn *hwfn = &cdev->hwfns[index % cdev->num_hwfns];
 429         int relative_idx = index / cdev->num_hwfns;
 430
 431         hwfn->simd_proto_handler[relative_idx].func = handler;
 432         hwfn->simd_proto_handler[relative_idx].token = token;
 433 }
 434
 435 static void qed_simd_handler_clean(struct qed_dev *cdev, int index)
 436 {
 437         struct qed_hwfn *hwfn = &cdev->hwfns[index % cdev->num_hwfns];
 438         int relative_idx = index / cdev->num_hwfns;
 439
 440         memset(&hwfn->simd_proto_handler[relative_idx], 0,
 441                sizeof(struct qed_simd_fp_handler));
 442 }
 443
 444 static irqreturn_t qed_msix_sp_int(int irq, void *tasklet)
 445 {
 446         tasklet_schedule((struct tasklet_struct *)tasklet);
 447         return IRQ_HANDLED;
 448 }
 449
 450 static irqreturn_t qed_single_int(int irq, void *dev_instance)
 451 {
 452         struct qed_dev *cdev = (struct qed_dev *)dev_instance;
 453         struct qed_hwfn *hwfn;
 454         irqreturn_t rc = IRQ_NONE;
 455         u64 status;
 456         int i, j;
 457
 458         for (i = 0; i < cdev->num_hwfns; i++) {
 459                 status = qed_int_igu_read_sisr_reg(&cdev->hwfns[i]);
 460
 461                 if (!status)
 462                         continue;
 463
 464                 hwfn = &cdev->hwfns[i];
 465
 466                 /* Slowpath interrupt */
 467                 if (unlikely(status & 0x1)) {
 468                         tasklet_schedule(hwfn->sp_dpc);
 469                         status &= ~0x1;
 470                         rc = IRQ_HANDLED;
 471                 }
 472
 473                 /* Fastpath interrupts */
 474                 for (j = 0; j < 64; j++) {
 475                         if ((0x2ULL << j) & status) {
 476                                 hwfn->simd_proto_handler[j].func(
 477                                         hwfn->simd_proto_handler[j].token);
 478                                 status &= ~(0x2ULL << j);
 479                                 rc = IRQ_HANDLED;
 480                         }
 481                 }
 482
 483                 if (unlikely(status))
 484                         DP_VERBOSE(hwfn, NETIF_MSG_INTR,
 485                                    "got an unknown interrupt status 0x%llx\n",
 486                                    status);
 487         }
 488
 489         return rc;
 490 }
 491
 492 int qed_slowpath_irq_req(struct qed_hwfn *hwfn)
 493 {
 494         struct qed_dev *cdev = hwfn->cdev;
 495         int rc = 0;
 496         u8 id;
 497
 498         if (cdev->int_params.out.int_mode == QED_INT_MODE_MSIX) {
 499                 id = hwfn->my_id;
 500                 snprintf(hwfn->name, NAME_SIZE, "sp-%d-%02x:%02x.%02x",
 501                          id, cdev->pdev->bus->number,
 502                          PCI_SLOT(cdev->pdev->devfn), hwfn->abs_pf_id);
 503                 rc = request_irq(cdev->int_params.msix_table[id].vector,
 504                                  qed_msix_sp_int, 0, hwfn->name, hwfn->sp_dpc);
 505                 if (!rc)
 506                         DP_VERBOSE(hwfn, (NETIF_MSG_INTR | QED_MSG_SP),
 507                                    "Requested slowpath MSI-X\n");
 508         } else {
 509                 unsigned long flags = 0;
 510
 511                 snprintf(cdev->name, NAME_SIZE, "%02x:%02x.%02x",
 512                          cdev->pdev->bus->number, PCI_SLOT(cdev->pdev->devfn),
 513                          PCI_FUNC(cdev->pdev->devfn));
 514
 515                 if (cdev->int_params.out.int_mode == QED_INT_MODE_INTA)
 516                         flags |= IRQF_SHARED;
 517
 518                 rc = request_irq(cdev->pdev->irq, qed_single_int,
 519                                  flags, cdev->name, cdev);
 520         }
 521
 522         return rc;
 523 }
 524
 525 static void qed_slowpath_irq_free(struct qed_dev *cdev)
 526 {
 527         int i;
 528
 529         if (cdev->int_params.out.int_mode == QED_INT_MODE_MSIX) {
 530                 for_each_hwfn(cdev, i) {
 531                         if (!cdev->hwfns[i].b_int_requested)
 532                                 break;
 533                         synchronize_irq(cdev->int_params.msix_table[i].vector);
 534                         free_irq(cdev->int_params.msix_table[i].vector,
 535                                  cdev->hwfns[i].sp_dpc);
 536                 }
 537         } else {
 538                 if (QED_LEADING_HWFN(cdev)->b_int_requested)
 539                         free_irq(cdev->pdev->irq, cdev);
 540         }
 541         qed_int_disable_post_isr_release(cdev);
 542 }
 543
 544 static int qed_nic_stop(struct qed_dev *cdev)
 545 {
 546         int i, rc;
 547
 548         rc = qed_hw_stop(cdev);
 549
 550         for (i = 0; i < cdev->num_hwfns; i++) {
 551                 struct qed_hwfn *p_hwfn = &cdev->hwfns[i];
 552
 553                 if (p_hwfn->b_sp_dpc_enabled) {
 554                         tasklet_disable(p_hwfn->sp_dpc);
 555                         p_hwfn->b_sp_dpc_enabled = false;
 556                         DP_VERBOSE(cdev, NETIF_MSG_IFDOWN,
 557                                    "Disabled sp taskelt [hwfn %d] at %p\n",
 558                                    i, p_hwfn->sp_dpc);
 559                 }
 560         }
 561
 562         return rc;
 563 }
 564
 565 static int qed_nic_reset(struct qed_dev *cdev)
 566 {
 567         int rc;
 568
 569         rc = qed_hw_reset(cdev);
 570         if (rc)
 571                 return rc;
 572
 573         qed_resc_free(cdev);
 574
 575         return 0;
 576 }
 577
 578 static int qed_nic_setup(struct qed_dev *cdev)
 579 {
 580         int rc;
 581
 582         rc = qed_resc_alloc(cdev);
 583         if (rc)
 584                 return rc;
 585
 586         DP_INFO(cdev, "Allocated qed resources\n");
 587
 588         qed_resc_setup(cdev);
 589
 590         return rc;
 591 }
 592
 593 static int qed_set_int_fp(struct qed_dev *cdev, u16 cnt)
 594 {
 595         int limit = 0;
 596
 597         /* Mark the fastpath as free/used */
 598         cdev->int_params.fp_initialized = cnt ? true : false;
 599
 600         if (cdev->int_params.out.int_mode != QED_INT_MODE_MSIX)
 601                 limit = cdev->num_hwfns * 63;
 602         else if (cdev->int_params.fp_msix_cnt)
 603                 limit = cdev->int_params.fp_msix_cnt;
 604
 605         if (!limit)
 606                 return -ENOMEM;
 607
 608         return min_t(int, cnt, limit);
 609 }
 610
 611 static int qed_get_int_fp(struct qed_dev *cdev, struct qed_int_info *info)
 612 {
 613         memset(info, 0, sizeof(struct qed_int_info));
 614
 615         if (!cdev->int_params.fp_initialized) {
 616                 DP_INFO(cdev,
 617                         "Protocol driver requested interrupt information, but its support is not yet configured\n");
 618                 return -EINVAL;
 619         }
 620
 621         /* Need to expose only MSI-X information; Single IRQ is handled solely
 622          * by qed.
 623          */
 624         if (cdev->int_params.out.int_mode == QED_INT_MODE_MSIX) {
 625                 int msix_base = cdev->int_params.fp_msix_base;
 626
 627                 info->msix_cnt = cdev->int_params.fp_msix_cnt;
 628                 info->msix = &cdev->int_params.msix_table[msix_base];
 629         }
 630
 631         return 0;
 632 }
 633
 634 static int qed_slowpath_setup_int(struct qed_dev *cdev,
 635                                   enum qed_int_mode int_mode)
 636 {
 637         struct qed_sb_cnt_info sb_cnt_info;
 638         int rc;
 639         int i;
 640         memset(&cdev->int_params, 0, sizeof(struct qed_int_params));
 641
 642         cdev->int_params.in.int_mode = int_mode;
 643         for_each_hwfn(cdev, i) {
 644                 memset(&sb_cnt_info, 0, sizeof(sb_cnt_info));
 645                 qed_int_get_num_sbs(&cdev->hwfns[i], &sb_cnt_info);
 646                 cdev->int_params.in.num_vectors += sb_cnt_info.sb_cnt;
 647                 cdev->int_params.in.num_vectors++; /* slowpath */
 648         }
 649
 650         /* We want a minimum of one slowpath and one fastpath vector per hwfn */
 651         cdev->int_params.in.min_msix_cnt = cdev->num_hwfns * 2;
 652
 653         rc = qed_set_int_mode(cdev, false);
 654         if (rc)  {
 655                 DP_ERR(cdev, "qed_slowpath_setup_int ERR\n");
 656                 return rc;
 657         }
 658
 659         cdev->int_params.fp_msix_base = cdev->num_hwfns;
 660         cdev->int_params.fp_msix_cnt = cdev->int_params.out.num_vectors -
 661                                        cdev->num_hwfns;
 662
 663         return 0;
 664 }
 665
 666 u32 qed_unzip_data(struct qed_hwfn *p_hwfn, u32 input_len,
 667                    u8 *input_buf, u32 max_size, u8 *unzip_buf)
 668 {
 669         int rc;
 670
 671         p_hwfn->stream->next_in = input_buf;
 672         p_hwfn->stream->avail_in = input_len;
 673         p_hwfn->stream->next_out = unzip_buf;
 674         p_hwfn->stream->avail_out = max_size;
 675
 676         rc = zlib_inflateInit2(p_hwfn->stream, MAX_WBITS);
 677
 678         if (rc != Z_OK) {
 679                 DP_VERBOSE(p_hwfn, NETIF_MSG_DRV, "zlib init failed, rc = %d\n",
 680                            rc);
 681                 return 0;
 682         }
 683
 684         rc = zlib_inflate(p_hwfn->stream, Z_FINISH);
 685         zlib_inflateEnd(p_hwfn->stream);
 686
 687         if (rc != Z_OK && rc != Z_STREAM_END) {
 688                 DP_VERBOSE(p_hwfn, NETIF_MSG_DRV, "FW unzip error: %s, rc=%d\n",
 689                            p_hwfn->stream->msg, rc);
 690                 return 0;
 691         }
 692
 693         return p_hwfn->stream->total_out / 4;
 694 }
 695
 696 static int qed_alloc_stream_mem(struct qed_dev *cdev)
 697 {
 698         int i;
 699         void *workspace;
 700
 701         for_each_hwfn(cdev, i) {
 702                 struct qed_hwfn *p_hwfn = &cdev->hwfns[i];
 703
 704                 p_hwfn->stream = kzalloc(sizeof(*p_hwfn->stream), GFP_KERNEL);
 705                 if (!p_hwfn->stream)
 706                         return -ENOMEM;
 707
 708                 workspace = vzalloc(zlib_inflate_workspacesize());
 709                 if (!workspace)
 710                         return -ENOMEM;
 711                 p_hwfn->stream->workspace = workspace;
 712         }
 713
 714         return 0;
 715 }
 716
 717 static void qed_free_stream_mem(struct qed_dev *cdev)
 718 {
 719         int i;
 720
 721         for_each_hwfn(cdev, i) {
 722                 struct qed_hwfn *p_hwfn = &cdev->hwfns[i];
 723
 724                 if (!p_hwfn->stream)
 725                         return;
 726
 727                 vfree(p_hwfn->stream->workspace);
 728                 kfree(p_hwfn->stream);
 729         }
 730 }
 731
 732 static void qed_update_pf_params(struct qed_dev *cdev,
 733                                  struct qed_pf_params *params)
 734 {
 735         int i;
 736
 737         for (i = 0; i < cdev->num_hwfns; i++) {
 738                 struct qed_hwfn *p_hwfn = &cdev->hwfns[i];
 739
 740                 p_hwfn->pf_params = *params;
 741         }
 742 }
 743
 744 static int qed_slowpath_start(struct qed_dev *cdev,
 745                               struct qed_slowpath_params *params)
 746 {
 747         struct qed_mcp_drv_version drv_version;
 748         const u8 *data = NULL;
 749         struct qed_hwfn *hwfn;
 750         int rc;
 751
 752         rc = request_firmware(&cdev->firmware, QED_FW_FILE_NAME,
 753                               &cdev->pdev->dev);
 754         if (rc) {
 755                 DP_NOTICE(cdev,
 756                           "Failed to find fw file - /lib/firmware/%s\n",
 757                           QED_FW_FILE_NAME);
 758                 goto err;
 759         }
 760
 761         rc = qed_nic_setup(cdev);
 762         if (rc)
 763                 goto err;
 764
 765         rc = qed_slowpath_setup_int(cdev, params->int_mode);
 766         if (rc)
 767                 goto err1;
 768
 769         /* Allocate stream for unzipping */
 770         rc = qed_alloc_stream_mem(cdev);
 771         if (rc) {
 772                 DP_NOTICE(cdev, "Failed to allocate stream memory\n");
 773                 goto err2;
 774         }
 775
 776         /* Start the slowpath */
 777         data = cdev->firmware->data;
 778
 779         rc = qed_hw_init(cdev, true, cdev->int_params.out.int_mode,
 780                          true, data);
 781         if (rc)
 782                 goto err3;
 783
 784         DP_INFO(cdev,
 785                 "HW initialization and function start completed successfully\n");
 786
 787         hwfn = QED_LEADING_HWFN(cdev);
 788         drv_version.version = (params->drv_major << 24) |
 789                               (params->drv_minor << 16) |
 790                               (params->drv_rev << 8) |
 791                               (params->drv_eng);
 792         strlcpy(drv_version.name, params->name,
 793                 MCP_DRV_VER_STR_SIZE - 4);
 794         rc = qed_mcp_send_drv_version(hwfn, hwfn->p_main_ptt,
 795                                       &drv_version);
 796         if (rc) {
 797                 DP_NOTICE(cdev, "Failed sending drv version command\n");
 798                 return rc;
 799         }
 800
 801         return 0;
 802
 803 err3:
 804         qed_free_stream_mem(cdev);
 805         qed_slowpath_irq_free(cdev);
 806 err2:
 807         qed_disable_msix(cdev);
 808 err1:
 809         qed_resc_free(cdev);
 810 err:
 811         release_firmware(cdev->firmware);
 812
 813         return rc;
 814 }
 815
 816 static int qed_slowpath_stop(struct qed_dev *cdev)
 817 {
 818         if (!cdev)
 819                 return -ENODEV;
 820
 821         qed_free_stream_mem(cdev);
 822
 823         qed_nic_stop(cdev);
 824         qed_slowpath_irq_free(cdev);
 825
 826         qed_disable_msix(cdev);
 827         qed_nic_reset(cdev);
 828
 829         release_firmware(cdev->firmware);
 830
 831         return 0;
 832 }
 833
 834 static void qed_set_id(struct qed_dev *cdev, char name[NAME_SIZE],
 835                        char ver_str[VER_SIZE])
 836 {
 837         int i;
 838
 839         memcpy(cdev->name, name, NAME_SIZE);
 840         for_each_hwfn(cdev, i)
 841                 snprintf(cdev->hwfns[i].name, NAME_SIZE, "%s-%d", name, i);
 842
 843         memcpy(cdev->ver_str, ver_str, VER_SIZE);
 844         cdev->drv_type = DRV_ID_DRV_TYPE_LINUX;
 845 }
 846
 847 static u32 qed_sb_init(struct qed_dev *cdev,
 848                        struct qed_sb_info *sb_info,
 849                        void *sb_virt_addr,
 850                        dma_addr_t sb_phy_addr, u16 sb_id,
 851                        enum qed_sb_type type)
 852 {
 853         struct qed_hwfn *p_hwfn;
 854         int hwfn_index;
 855         u16 rel_sb_id;
 856         u8 n_hwfns;
 857         u32 rc;
 858
 859         /* RoCE uses single engine and CMT uses two engines. When using both
 860          * we force only a single engine. Storage uses only engine 0 too.
 861          */
 862         if (type == QED_SB_TYPE_L2_QUEUE)
 863                 n_hwfns = cdev->num_hwfns;
 864         else
 865                 n_hwfns = 1;
 866
 867         hwfn_index = sb_id % n_hwfns;
 868         p_hwfn = &cdev->hwfns[hwfn_index];
 869         rel_sb_id = sb_id / n_hwfns;
 870
 871         DP_VERBOSE(cdev, NETIF_MSG_INTR,
 872                    "hwfn [%d] <--[init]-- SB %04x [0x%04x upper]\n",
 873                    hwfn_index, rel_sb_id, sb_id);
 874
 875         rc = qed_int_sb_init(p_hwfn, p_hwfn->p_main_ptt, sb_info,
 876                              sb_virt_addr, sb_phy_addr, rel_sb_id);
 877
 878         return rc;
 879 }
 880
 881 static u32 qed_sb_release(struct qed_dev *cdev,
 882                           struct qed_sb_info *sb_info,
 883                           u16 sb_id)
 884 {
 885         struct qed_hwfn *p_hwfn;
 886         int hwfn_index;
 887         u16 rel_sb_id;
 888         u32 rc;
 889
 890         hwfn_index = sb_id % cdev->num_hwfns;
 891         p_hwfn = &cdev->hwfns[hwfn_index];
 892         rel_sb_id = sb_id / cdev->num_hwfns;
 893
 894         DP_VERBOSE(cdev, NETIF_MSG_INTR,
 895                    "hwfn [%d] <--[init]-- SB %04x [0x%04x upper]\n",
 896                    hwfn_index, rel_sb_id, sb_id);
 897
 898         rc = qed_int_sb_release(p_hwfn, sb_info, rel_sb_id);
 899
 900         return rc;
 901 }
 902
 903 static int qed_set_link(struct qed_dev *cdev,
 904                         struct qed_link_params *params)
 905 {
 906         struct qed_hwfn *hwfn;
 907         struct qed_mcp_link_params *link_params;
 908         struct qed_ptt *ptt;
 909         int rc;
 910
 911         if (!cdev)
 912                 return -ENODEV;
 913
 914         /* The link should be set only once per PF */
 915         hwfn = &cdev->hwfns[0];
 916
 917         ptt = qed_ptt_acquire(hwfn);
 918         if (!ptt)
 919                 return -EBUSY;
 920
 921         link_params = qed_mcp_get_link_params(hwfn);
 922         if (params->override_flags & QED_LINK_OVERRIDE_SPEED_AUTONEG)
 923                 link_params->speed.autoneg = params->autoneg;
 924         if (params->override_flags & QED_LINK_OVERRIDE_SPEED_ADV_SPEEDS) {
 925                 link_params->speed.advertised_speeds = 0;
 926                 if ((params->adv_speeds & SUPPORTED_1000baseT_Half) ||
 927                     (params->adv_speeds & SUPPORTED_1000baseT_Full))
 928                         link_params->speed.advertised_speeds |=
 929                                 NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_1G;
 930                 if (params->adv_speeds & SUPPORTED_10000baseKR_Full)
 931                         link_params->speed.advertised_speeds |=
 932                                 NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_10G;
 933                 if (params->adv_speeds & SUPPORTED_40000baseLR4_Full)
 934                         link_params->speed.advertised_speeds |=
 935                                 NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_40G;
 936                 if (params->adv_speeds & 0)
 937                         link_params->speed.advertised_speeds |=
 938                                 NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_50G;
 939                 if (params->adv_speeds & 0)
 940                         link_params->speed.advertised_speeds |=
 941                                 NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_100G;
 942         }
 943         if (params->override_flags & QED_LINK_OVERRIDE_SPEED_FORCED_SPEED)
 944                 link_params->speed.forced_speed = params->forced_speed;
 945
 946         rc = qed_mcp_set_link(hwfn, ptt, params->link_up);
 947
 948         qed_ptt_release(hwfn, ptt);
 949
 950         return rc;
 951 }
 952
 953 static int qed_get_port_type(u32 media_type)
 954 {
 955         int port_type;
 956
 957         switch (media_type) {
 958         case MEDIA_SFPP_10G_FIBER:
 959         case MEDIA_SFP_1G_FIBER:
 960         case MEDIA_XFP_FIBER:
 961         case MEDIA_KR:
 962                 port_type = PORT_FIBRE;
 963                 break;
 964         case MEDIA_DA_TWINAX:
 965                 port_type = PORT_DA;
 966                 break;
 967         case MEDIA_BASE_T:
 968                 port_type = PORT_TP;
 969                 break;
 970         case MEDIA_NOT_PRESENT:
 971                 port_type = PORT_NONE;
 972                 break;
 973         case MEDIA_UNSPECIFIED:
 974         default:
 975                 port_type = PORT_OTHER;
 976                 break;
 977         }
 978         return port_type;
 979 }
 980
 981 static void qed_fill_link(struct qed_hwfn *hwfn,
 982                           struct qed_link_output *if_link)
 983 {
 984         struct qed_mcp_link_params params;
 985         struct qed_mcp_link_state link;
 986         struct qed_mcp_link_capabilities link_caps;
 987         u32 media_type;
 988
 989         memset(if_link, 0, sizeof(*if_link));
 990
 991         /* Prepare source inputs */
 992         memcpy(&params, qed_mcp_get_link_params(hwfn), sizeof(params));
 993         memcpy(&link, qed_mcp_get_link_state(hwfn), sizeof(link));
 994         memcpy(&link_caps, qed_mcp_get_link_capabilities(hwfn),
 995                sizeof(link_caps));
 996
 997         /* Set the link parameters to pass to protocol driver */
 998         if (link.link_up)
 999                 if_link->link_up = true;
1000
1001         /* TODO - at the moment assume supported and advertised speed equal */
1002         if_link->supported_caps = SUPPORTED_FIBRE;
1003         if (params.speed.autoneg)
1004                 if_link->supported_caps |= SUPPORTED_Autoneg;
1005         if (params.pause.autoneg ||
1006             (params.pause.forced_rx && params.pause.forced_tx))
1007                 if_link->supported_caps |= SUPPORTED_Asym_Pause;
1008         if (params.pause.autoneg || params.pause.forced_rx ||
1009             params.pause.forced_tx)
1010                 if_link->supported_caps |= SUPPORTED_Pause;
1011
1012         if_link->advertised_caps = if_link->supported_caps;
1013         if (params.speed.advertised_speeds &
1014             NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_1G)
1015                 if_link->advertised_caps |= SUPPORTED_1000baseT_Half |
1016                                            SUPPORTED_1000baseT_Full;
1017         if (params.speed.advertised_speeds &
1018             NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_10G)
1019                 if_link->advertised_caps |= SUPPORTED_10000baseKR_Full;
1020         if (params.speed.advertised_speeds &
1021                 NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_40G)
1022                 if_link->advertised_caps |= SUPPORTED_40000baseLR4_Full;
1023         if (params.speed.advertised_speeds &
1024                 NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_50G)
1025                 if_link->advertised_caps |= 0;
1026         if (params.speed.advertised_speeds &
1027                 NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_100G)
1028                 if_link->advertised_caps |= 0;
1029
1030         if (link_caps.speed_capabilities &
1031             NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_1G)
1032                 if_link->supported_caps |= SUPPORTED_1000baseT_Half |
1033                                            SUPPORTED_1000baseT_Full;
1034         if (link_caps.speed_capabilities &
1035             NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_10G)
1036                 if_link->supported_caps |= SUPPORTED_10000baseKR_Full;
1037         if (link_caps.speed_capabilities &
1038                 NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_40G)
1039                 if_link->supported_caps |= SUPPORTED_40000baseLR4_Full;
1040         if (link_caps.speed_capabilities &
1041                 NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_50G)
1042                 if_link->supported_caps |= 0;
1043         if (link_caps.speed_capabilities &
1044                 NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_100G)
1045                 if_link->supported_caps |= 0;
1046
1047         if (link.link_up)
1048                 if_link->speed = link.speed;
1049
1050         /* TODO - fill duplex properly */
1051         if_link->duplex = DUPLEX_FULL;
1052         qed_mcp_get_media_type(hwfn->cdev, &media_type);
1053         if_link->port = qed_get_port_type(media_type);
1054
1055         if_link->autoneg = params.speed.autoneg;
1056
1057         if (params.pause.autoneg)
1058                 if_link->pause_config |= QED_LINK_PAUSE_AUTONEG_ENABLE;
1059         if (params.pause.forced_rx)
1060                 if_link->pause_config |= QED_LINK_PAUSE_RX_ENABLE;
1061         if (params.pause.forced_tx)
1062                 if_link->pause_config |= QED_LINK_PAUSE_TX_ENABLE;
1063
1064         /* Link partner capabilities */
1065         if (link.partner_adv_speed &
1066             QED_LINK_PARTNER_SPEED_1G_HD)
1067                 if_link->lp_caps |= SUPPORTED_1000baseT_Half;
1068         if (link.partner_adv_speed &
1069             QED_LINK_PARTNER_SPEED_1G_FD)
1070                 if_link->lp_caps |= SUPPORTED_1000baseT_Full;
1071         if (link.partner_adv_speed &
1072             QED_LINK_PARTNER_SPEED_10G)
1073                 if_link->lp_caps |= SUPPORTED_10000baseKR_Full;
1074         if (link.partner_adv_speed &
1075             QED_LINK_PARTNER_SPEED_40G)
1076                 if_link->lp_caps |= SUPPORTED_40000baseLR4_Full;
1077         if (link.partner_adv_speed &
1078             QED_LINK_PARTNER_SPEED_50G)
1079                 if_link->lp_caps |= 0;
1080         if (link.partner_adv_speed &
1081             QED_LINK_PARTNER_SPEED_100G)
1082                 if_link->lp_caps |= 0;
1083
1084         if (link.an_complete)
1085                 if_link->lp_caps |= SUPPORTED_Autoneg;
1086
1087         if (link.partner_adv_pause)
1088                 if_link->lp_caps |= SUPPORTED_Pause;
1089         if (link.partner_adv_pause == QED_LINK_PARTNER_ASYMMETRIC_PAUSE ||
1090             link.partner_adv_pause == QED_LINK_PARTNER_BOTH_PAUSE)
1091                 if_link->lp_caps |= SUPPORTED_Asym_Pause;
1092 }
1093
1094 static void qed_get_current_link(struct qed_dev *cdev,
1095                                  struct qed_link_output *if_link)
1096 {
1097         qed_fill_link(&cdev->hwfns[0], if_link);
1098 }
1099
1100 void qed_link_update(struct qed_hwfn *hwfn)
1101 {
1102         void *cookie = hwfn->cdev->ops_cookie;
1103         struct qed_common_cb_ops *op = hwfn->cdev->protocol_ops.common;
1104         struct qed_link_output if_link;
1105
1106         qed_fill_link(hwfn, &if_link);
1107
1108         if (IS_LEAD_HWFN(hwfn) && cookie)
1109                 op->link_update(cookie, &if_link);
1110 }
1111
1112 static int qed_drain(struct qed_dev *cdev)
1113 {
1114         struct qed_hwfn *hwfn;
1115         struct qed_ptt *ptt;
1116         int i, rc;
1117
1118         for_each_hwfn(cdev, i) {
1119                 hwfn = &cdev->hwfns[i];
1120                 ptt = qed_ptt_acquire(hwfn);
1121                 if (!ptt) {
1122                         DP_NOTICE(hwfn, "Failed to drain NIG; No PTT\n");
1123                         return -EBUSY;
1124                 }
1125                 rc = qed_mcp_drain(hwfn, ptt);
1126                 if (rc)
1127                         return rc;
1128                 qed_ptt_release(hwfn, ptt);
1129         }
1130
1131         return 0;
1132 }
1133
1134 static int qed_set_led(struct qed_dev *cdev, enum qed_led_mode mode)
1135 {
1136         struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
1137         struct qed_ptt *ptt;
1138         int status = 0;
1139
1140         ptt = qed_ptt_acquire(hwfn);
1141         if (!ptt)
1142                 return -EAGAIN;
1143
1144         status = qed_mcp_set_led(hwfn, ptt, mode);
1145
1146         qed_ptt_release(hwfn, ptt);
1147
1148         return status;
1149 }
1150
1151 const struct qed_common_ops qed_common_ops_pass = {
1152         .probe = &qed_probe,
1153         .remove = &qed_remove,
1154         .set_power_state = &qed_set_power_state,
1155         .set_id = &qed_set_id,
1156         .update_pf_params = &qed_update_pf_params,
1157         .slowpath_start = &qed_slowpath_start,
1158         .slowpath_stop = &qed_slowpath_stop,
1159         .set_fp_int = &qed_set_int_fp,
1160         .get_fp_int = &qed_get_int_fp,
1161         .sb_init = &qed_sb_init,
1162         .sb_release = &qed_sb_release,
1163         .simd_handler_config = &qed_simd_handler_config,
1164         .simd_handler_clean = &qed_simd_handler_clean,
1165         .set_link = &qed_set_link,
1166         .get_link = &qed_get_current_link,
1167         .drain = &qed_drain,
1168         .update_msglvl = &qed_init_dp,
1169         .chain_alloc = &qed_chain_alloc,
1170         .chain_free = &qed_chain_free,
1171         .set_led = &qed_set_led,
1172 };
1173
1174 u32 qed_get_protocol_version(enum qed_protocol protocol)
1175 {
1176         switch (protocol) {
1177         case QED_PROTOCOL_ETH:
1178                 return QED_ETH_INTERFACE_VERSION;
1179         default:
1180                 return 0;
1181         }
1182 }
1183 EXPORT_SYMBOL(qed_get_protocol_version);