ceph/src/spdk/dpdk/drivers/bus/fslmc/fslmc_vfio.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  *   Copyright (c) 2015-2016 Freescale Semiconductor, Inc. All rights reserved.
   4  *   Copyright 2016 NXP
   5  *
   6  */
   7
   8 #include <unistd.h>
   9 #include <stdio.h>
  10 #include <sys/types.h>
  11 #include <string.h>
  12 #include <stdlib.h>
  13 #include <fcntl.h>
  14 #include <errno.h>
  15 #include <sys/ioctl.h>
  16 #include <sys/stat.h>
  17 #include <sys/mman.h>
  18 #include <sys/vfs.h>
  19 #include <libgen.h>
  20 #include <dirent.h>
  21 #include <sys/eventfd.h>
  22
  23 #include <eal_filesystem.h>
  24 #include <rte_mbuf.h>
  25 #include <rte_ethdev_driver.h>
  26 #include <rte_malloc.h>
  27 #include <rte_memcpy.h>
  28 #include <rte_string_fns.h>
  29 #include <rte_cycles.h>
  30 #include <rte_kvargs.h>
  31 #include <rte_dev.h>
  32 #include <rte_bus.h>
  33 #include <rte_eal_memconfig.h>
  34
  35 #include "rte_fslmc.h"
  36 #include "fslmc_vfio.h"
  37 #include "fslmc_logs.h"
  38 #include <mc/fsl_dpmng.h>
  39
  40 #include "portal/dpaa2_hw_pvt.h"
  41 #include "portal/dpaa2_hw_dpio.h"
  42
  43 /** Pathname of FSL-MC devices directory. */
  44 #define SYSFS_FSL_MC_DEVICES "/sys/bus/fsl-mc/devices"
  45
  46 #define FSLMC_CONTAINER_MAX_LEN 8 /**< Of the format dprc.XX */
  47
  48 /* Number of VFIO containers & groups with in */
  49 static struct fslmc_vfio_group vfio_group;
  50 static struct fslmc_vfio_container vfio_container;
  51 static int container_device_fd;
  52 static char *g_container;
  53 static uint32_t *msi_intr_vaddr;
  54 void *(*rte_mcp_ptr_list);
  55
  56 static struct rte_dpaa2_object_list dpaa2_obj_list =
  57         TAILQ_HEAD_INITIALIZER(dpaa2_obj_list);
  58
  59 /*register a fslmc bus based dpaa2 driver */
  60 void
  61 rte_fslmc_object_register(struct rte_dpaa2_object *object)
  62 {
  63         RTE_VERIFY(object);
  64
  65         TAILQ_INSERT_TAIL(&dpaa2_obj_list, object, next);
  66 }
  67
  68 int
  69 fslmc_get_container_group(int *groupid)
  70 {
  71         int ret;
  72         char *container;
  73
  74         if (!g_container) {
  75                 container = getenv("DPRC");
  76                 if (container == NULL) {
  77                         DPAA2_BUS_DEBUG("DPAA2: DPRC not available");
  78                         return -EINVAL;
  79                 }
  80
  81                 if (strlen(container) >= FSLMC_CONTAINER_MAX_LEN) {
  82                         DPAA2_BUS_ERR("Invalid container name: %s", container);
  83                         return -1;
  84                 }
  85
  86                 g_container = strdup(container);
  87                 if (!g_container) {
  88                         DPAA2_BUS_ERR("Mem alloc failure; Container name");
  89                         return -ENOMEM;
  90                 }
  91         }
  92
  93         /* get group number */
  94         ret = rte_vfio_get_group_num(SYSFS_FSL_MC_DEVICES,
  95                                      g_container, groupid);
  96         if (ret <= 0) {
  97                 DPAA2_BUS_ERR("Unable to find %s IOMMU group", g_container);
  98                 return -1;
  99         }
 100
 101         DPAA2_BUS_DEBUG("Container: %s has VFIO iommu group id = %d",
 102                         g_container, *groupid);
 103
 104         return 0;
 105 }
 106
 107 static int
 108 vfio_connect_container(void)
 109 {
 110         int fd, ret;
 111
 112         if (vfio_container.used) {
 113                 DPAA2_BUS_DEBUG("No container available");
 114                 return -1;
 115         }
 116
 117         /* Try connecting to vfio container if already created */
 118         if (!ioctl(vfio_group.fd, VFIO_GROUP_SET_CONTAINER,
 119                 &vfio_container.fd)) {
 120                 DPAA2_BUS_DEBUG(
 121                     "Container pre-exists with FD[0x%x] for this group",
 122                     vfio_container.fd);
 123                 vfio_group.container = &vfio_container;
 124                 return 0;
 125         }
 126
 127         /* Opens main vfio file descriptor which represents the "container" */
 128         fd = rte_vfio_get_container_fd();
 129         if (fd < 0) {
 130                 DPAA2_BUS_ERR("Failed to open VFIO container");
 131                 return -errno;
 132         }
 133
 134         /* Check whether support for SMMU type IOMMU present or not */
 135         if (ioctl(fd, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU)) {
 136                 /* Connect group to container */
 137                 ret = ioctl(vfio_group.fd, VFIO_GROUP_SET_CONTAINER, &fd);
 138                 if (ret) {
 139                         DPAA2_BUS_ERR("Failed to setup group container");
 140                         close(fd);
 141                         return -errno;
 142                 }
 143
 144                 ret = ioctl(fd, VFIO_SET_IOMMU, VFIO_TYPE1_IOMMU);
 145                 if (ret) {
 146                         DPAA2_BUS_ERR("Failed to setup VFIO iommu");
 147                         close(fd);
 148                         return -errno;
 149                 }
 150         } else {
 151                 DPAA2_BUS_ERR("No supported IOMMU available");
 152                 close(fd);
 153                 return -EINVAL;
 154         }
 155
 156         vfio_container.used = 1;
 157         vfio_container.fd = fd;
 158         vfio_container.group = &vfio_group;
 159         vfio_group.container = &vfio_container;
 160
 161         return 0;
 162 }
 163
 164 static int vfio_map_irq_region(struct fslmc_vfio_group *group)
 165 {
 166         int ret;
 167         unsigned long *vaddr = NULL;
 168         struct vfio_iommu_type1_dma_map map = {
 169                 .argsz = sizeof(map),
 170                 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
 171                 .vaddr = 0x6030000,
 172                 .iova = 0x6030000,
 173                 .size = 0x1000,
 174         };
 175
 176         vaddr = (unsigned long *)mmap(NULL, 0x1000, PROT_WRITE |
 177                 PROT_READ, MAP_SHARED, container_device_fd, 0x6030000);
 178         if (vaddr == MAP_FAILED) {
 179                 DPAA2_BUS_ERR("Unable to map region (errno = %d)", errno);
 180                 return -errno;
 181         }
 182
 183         msi_intr_vaddr = (uint32_t *)((char *)(vaddr) + 64);
 184         map.vaddr = (unsigned long)vaddr;
 185         ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &map);
 186         if (ret == 0)
 187                 return 0;
 188
 189         DPAA2_BUS_ERR("Unable to map DMA address (errno = %d)", errno);
 190         return -errno;
 191 }
 192
 193 static int fslmc_map_dma(uint64_t vaddr, rte_iova_t iovaddr, size_t len);
 194 static int fslmc_unmap_dma(uint64_t vaddr, rte_iova_t iovaddr, size_t len);
 195
 196 static void
 197 fslmc_memevent_cb(enum rte_mem_event type, const void *addr, size_t len,
 198                 void *arg __rte_unused)
 199 {
 200         struct rte_memseg_list *msl;
 201         struct rte_memseg *ms;
 202         size_t cur_len = 0, map_len = 0;
 203         uint64_t virt_addr;
 204         rte_iova_t iova_addr;
 205         int ret;
 206
 207         msl = rte_mem_virt2memseg_list(addr);
 208
 209         while (cur_len < len) {
 210                 const void *va = RTE_PTR_ADD(addr, cur_len);
 211
 212                 ms = rte_mem_virt2memseg(va, msl);
 213                 iova_addr = ms->iova;
 214                 virt_addr = ms->addr_64;
 215                 map_len = ms->len;
 216
 217                 DPAA2_BUS_DEBUG("Request for %s, va=%p, "
 218                                 "virt_addr=0x%" PRIx64 ", "
 219                                 "iova=0x%" PRIx64 ", map_len=%zu",
 220                                 type == RTE_MEM_EVENT_ALLOC ?
 221                                         "alloc" : "dealloc",
 222                                 va, virt_addr, iova_addr, map_len);
 223
 224                 if (type == RTE_MEM_EVENT_ALLOC)
 225                         ret = fslmc_map_dma(virt_addr, iova_addr, map_len);
 226                 else
 227                         ret = fslmc_unmap_dma(virt_addr, iova_addr, map_len);
 228
 229                 if (ret != 0) {
 230                         DPAA2_BUS_ERR("DMA Mapping/Unmapping failed. "
 231                                         "Map=%d, addr=%p, len=%zu, err:(%d)",
 232                                         type, va, map_len, ret);
 233                         return;
 234                 }
 235
 236                 cur_len += map_len;
 237         }
 238
 239         if (type == RTE_MEM_EVENT_ALLOC)
 240                 DPAA2_BUS_DEBUG("Total Mapped: addr=%p, len=%zu",
 241                                 addr, len);
 242         else
 243                 DPAA2_BUS_DEBUG("Total Unmapped: addr=%p, len=%zu",
 244                                 addr, len);
 245 }
 246
 247 static int
 248 fslmc_map_dma(uint64_t vaddr, rte_iova_t iovaddr __rte_unused, size_t len)
 249 {
 250         struct fslmc_vfio_group *group;
 251         struct vfio_iommu_type1_dma_map dma_map = {
 252                 .argsz = sizeof(struct vfio_iommu_type1_dma_map),
 253                 .flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE,
 254         };
 255         int ret;
 256
 257         dma_map.size = len;
 258         dma_map.vaddr = vaddr;
 259
 260 #ifdef RTE_LIBRTE_DPAA2_USE_PHYS_IOVA
 261         dma_map.iova = iovaddr;
 262 #else
 263         dma_map.iova = dma_map.vaddr;
 264 #endif
 265
 266         /* SET DMA MAP for IOMMU */
 267         group = &vfio_group;
 268
 269         if (!group->container) {
 270                 DPAA2_BUS_ERR("Container is not connected ");
 271                 return -1;
 272         }
 273
 274         DPAA2_BUS_DEBUG("--> Map address: 0x%"PRIx64", size: %"PRIu64"",
 275                         (uint64_t)dma_map.vaddr, (uint64_t)dma_map.size);
 276         ret = ioctl(group->container->fd, VFIO_IOMMU_MAP_DMA, &dma_map);
 277         if (ret) {
 278                 DPAA2_BUS_ERR("VFIO_IOMMU_MAP_DMA API(errno = %d)",
 279                                 errno);
 280                 return -1;
 281         }
 282
 283         return 0;
 284 }
 285
 286 static int
 287 fslmc_unmap_dma(uint64_t vaddr, uint64_t iovaddr __rte_unused, size_t len)
 288 {
 289         struct fslmc_vfio_group *group;
 290         struct vfio_iommu_type1_dma_unmap dma_unmap = {
 291                 .argsz = sizeof(struct vfio_iommu_type1_dma_unmap),
 292                 .flags = 0,
 293         };
 294         int ret;
 295
 296         dma_unmap.size = len;
 297         dma_unmap.iova = vaddr;
 298
 299         /* SET DMA MAP for IOMMU */
 300         group = &vfio_group;
 301
 302         if (!group->container) {
 303                 DPAA2_BUS_ERR("Container is not connected ");
 304                 return -1;
 305         }
 306
 307         DPAA2_BUS_DEBUG("--> Unmap address: 0x%"PRIx64", size: %"PRIu64"",
 308                         (uint64_t)dma_unmap.iova, (uint64_t)dma_unmap.size);
 309         ret = ioctl(group->container->fd, VFIO_IOMMU_UNMAP_DMA, &dma_unmap);
 310         if (ret) {
 311                 DPAA2_BUS_ERR("VFIO_IOMMU_UNMAP_DMA API(errno = %d)",
 312                                 errno);
 313                 return -1;
 314         }
 315
 316         return 0;
 317 }
 318
 319 static int
 320 fslmc_dmamap_seg(const struct rte_memseg_list *msl __rte_unused,
 321                  const struct rte_memseg *ms, void *arg)
 322 {
 323         int *n_segs = arg;
 324         int ret;
 325
 326         ret = fslmc_map_dma(ms->addr_64, ms->iova, ms->len);
 327         if (ret)
 328                 DPAA2_BUS_ERR("Unable to VFIO map (addr=%p, len=%zu)",
 329                                 ms->addr, ms->len);
 330         else
 331                 (*n_segs)++;
 332
 333         return ret;
 334 }
 335
 336 int rte_fslmc_vfio_dmamap(void)
 337 {
 338         int i = 0, ret;
 339         struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
 340         rte_rwlock_t *mem_lock = &mcfg->memory_hotplug_lock;
 341
 342         /* Lock before parsing and registering callback to memory subsystem */
 343         rte_rwlock_read_lock(mem_lock);
 344
 345         if (rte_memseg_walk(fslmc_dmamap_seg, &i) < 0) {
 346                 rte_rwlock_read_unlock(mem_lock);
 347                 return -1;
 348         }
 349
 350         ret = rte_mem_event_callback_register("fslmc_memevent_clb",
 351                         fslmc_memevent_cb, NULL);
 352         if (ret && rte_errno == ENOTSUP)
 353                 DPAA2_BUS_DEBUG("Memory event callbacks not supported");
 354         else if (ret)
 355                 DPAA2_BUS_DEBUG("Unable to install memory handler");
 356         else
 357                 DPAA2_BUS_DEBUG("Installed memory callback handler");
 358
 359         DPAA2_BUS_DEBUG("Total %d segments found.", i);
 360
 361         /* TODO - This is a W.A. as VFIO currently does not add the mapping of
 362          * the interrupt region to SMMU. This should be removed once the
 363          * support is added in the Kernel.
 364          */
 365         vfio_map_irq_region(&vfio_group);
 366
 367         /* Existing segments have been mapped and memory callback for hotplug
 368          * has been installed.
 369          */
 370         rte_rwlock_read_unlock(mem_lock);
 371
 372         return 0;
 373 }
 374
 375 static int64_t vfio_map_mcp_obj(struct fslmc_vfio_group *group, char *mcp_obj)
 376 {
 377         intptr_t v_addr = (intptr_t)MAP_FAILED;
 378         int32_t ret, mc_fd;
 379
 380         struct vfio_device_info d_info = { .argsz = sizeof(d_info) };
 381         struct vfio_region_info reg_info = { .argsz = sizeof(reg_info) };
 382
 383         /* getting the mcp object's fd*/
 384         mc_fd = ioctl(group->fd, VFIO_GROUP_GET_DEVICE_FD, mcp_obj);
 385         if (mc_fd < 0) {
 386                 DPAA2_BUS_ERR("Error in VFIO get dev %s fd from group %d",
 387                               mcp_obj, group->fd);
 388                 return v_addr;
 389         }
 390
 391         /* getting device info*/
 392         ret = ioctl(mc_fd, VFIO_DEVICE_GET_INFO, &d_info);
 393         if (ret < 0) {
 394                 DPAA2_BUS_ERR("Error in VFIO getting DEVICE_INFO");
 395                 goto MC_FAILURE;
 396         }
 397
 398         /* getting device region info*/
 399         ret = ioctl(mc_fd, VFIO_DEVICE_GET_REGION_INFO, &reg_info);
 400         if (ret < 0) {
 401                 DPAA2_BUS_ERR("Error in VFIO getting REGION_INFO");
 402                 goto MC_FAILURE;
 403         }
 404
 405         v_addr = (size_t)mmap(NULL, reg_info.size,
 406                 PROT_WRITE | PROT_READ, MAP_SHARED,
 407                 mc_fd, reg_info.offset);
 408
 409 MC_FAILURE:
 410         close(mc_fd);
 411
 412         return v_addr;
 413 }
 414
 415 #define IRQ_SET_BUF_LEN  (sizeof(struct vfio_irq_set) + sizeof(int))
 416
 417 int rte_dpaa2_intr_enable(struct rte_intr_handle *intr_handle, int index)
 418 {
 419         int len, ret;
 420         char irq_set_buf[IRQ_SET_BUF_LEN];
 421         struct vfio_irq_set *irq_set;
 422         int *fd_ptr;
 423
 424         len = sizeof(irq_set_buf);
 425
 426         irq_set = (struct vfio_irq_set *)irq_set_buf;
 427         irq_set->argsz = len;
 428         irq_set->count = 1;
 429         irq_set->flags =
 430                 VFIO_IRQ_SET_DATA_EVENTFD | VFIO_IRQ_SET_ACTION_TRIGGER;
 431         irq_set->index = index;
 432         irq_set->start = 0;
 433         fd_ptr = (int *)&irq_set->data;
 434         *fd_ptr = intr_handle->fd;
 435
 436         ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
 437         if (ret) {
 438                 DPAA2_BUS_ERR("Error:dpaa2 SET IRQs fd=%d, err = %d(%s)",
 439                               intr_handle->fd, errno, strerror(errno));
 440                 return ret;
 441         }
 442
 443         return ret;
 444 }
 445
 446 int rte_dpaa2_intr_disable(struct rte_intr_handle *intr_handle, int index)
 447 {
 448         struct vfio_irq_set *irq_set;
 449         char irq_set_buf[IRQ_SET_BUF_LEN];
 450         int len, ret;
 451
 452         len = sizeof(struct vfio_irq_set);
 453
 454         irq_set = (struct vfio_irq_set *)irq_set_buf;
 455         irq_set->argsz = len;
 456         irq_set->flags = VFIO_IRQ_SET_DATA_NONE | VFIO_IRQ_SET_ACTION_TRIGGER;
 457         irq_set->index = index;
 458         irq_set->start = 0;
 459         irq_set->count = 0;
 460
 461         ret = ioctl(intr_handle->vfio_dev_fd, VFIO_DEVICE_SET_IRQS, irq_set);
 462         if (ret)
 463                 DPAA2_BUS_ERR(
 464                         "Error disabling dpaa2 interrupts for fd %d",
 465                         intr_handle->fd);
 466
 467         return ret;
 468 }
 469
 470 /* set up interrupt support (but not enable interrupts) */
 471 int
 472 rte_dpaa2_vfio_setup_intr(struct rte_intr_handle *intr_handle,
 473                           int vfio_dev_fd,
 474                           int num_irqs)
 475 {
 476         int i, ret;
 477
 478         /* start from MSI-X interrupt type */
 479         for (i = 0; i < num_irqs; i++) {
 480                 struct vfio_irq_info irq_info = { .argsz = sizeof(irq_info) };
 481                 int fd = -1;
 482
 483                 irq_info.index = i;
 484
 485                 ret = ioctl(vfio_dev_fd, VFIO_DEVICE_GET_IRQ_INFO, &irq_info);
 486                 if (ret < 0) {
 487                         DPAA2_BUS_ERR("Cannot get IRQ(%d) info, error %i (%s)",
 488                                       i, errno, strerror(errno));
 489                         return -1;
 490                 }
 491
 492                 /* if this vector cannot be used with eventfd,
 493                  * fail if we explicitly
 494                  * specified interrupt type, otherwise continue
 495                  */
 496                 if ((irq_info.flags & VFIO_IRQ_INFO_EVENTFD) == 0)
 497                         continue;
 498
 499                 /* set up an eventfd for interrupts */
 500                 fd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
 501                 if (fd < 0) {
 502                         DPAA2_BUS_ERR("Cannot set up eventfd, error %i (%s)",
 503                                       errno, strerror(errno));
 504                         return -1;
 505                 }
 506
 507                 intr_handle->fd = fd;
 508                 intr_handle->type = RTE_INTR_HANDLE_VFIO_MSI;
 509                 intr_handle->vfio_dev_fd = vfio_dev_fd;
 510
 511                 return 0;
 512         }
 513
 514         /* if we're here, we haven't found a suitable interrupt vector */
 515         return -1;
 516 }
 517
 518 /*
 519  * fslmc_process_iodevices for processing only IO (ETH, CRYPTO, and possibly
 520  * EVENT) devices.
 521  */
 522 static int
 523 fslmc_process_iodevices(struct rte_dpaa2_device *dev)
 524 {
 525         int dev_fd;
 526         struct vfio_device_info device_info = { .argsz = sizeof(device_info) };
 527         struct rte_dpaa2_object *object = NULL;
 528
 529         dev_fd = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD,
 530                        dev->device.name);
 531         if (dev_fd <= 0) {
 532                 DPAA2_BUS_ERR("Unable to obtain device FD for device:%s",
 533                               dev->device.name);
 534                 return -1;
 535         }
 536
 537         if (ioctl(dev_fd, VFIO_DEVICE_GET_INFO, &device_info)) {
 538                 DPAA2_BUS_ERR("Unable to obtain information for device:%s",
 539                               dev->device.name);
 540                 return -1;
 541         }
 542
 543         switch (dev->dev_type) {
 544         case DPAA2_ETH:
 545                 rte_dpaa2_vfio_setup_intr(&dev->intr_handle, dev_fd,
 546                                           device_info.num_irqs);
 547                 break;
 548         case DPAA2_CON:
 549         case DPAA2_IO:
 550         case DPAA2_CI:
 551         case DPAA2_BPOOL:
 552                 TAILQ_FOREACH(object, &dpaa2_obj_list, next) {
 553                         if (dev->dev_type == object->dev_type)
 554                                 object->create(dev_fd, &device_info,
 555                                                dev->object_id);
 556                         else
 557                                 continue;
 558                 }
 559                 break;
 560         default:
 561                 break;
 562         }
 563
 564         DPAA2_BUS_LOG(DEBUG, "Device (%s) abstracted from VFIO",
 565                       dev->device.name);
 566         return 0;
 567 }
 568
 569 static int
 570 fslmc_process_mcp(struct rte_dpaa2_device *dev)
 571 {
 572         int ret;
 573         intptr_t v_addr;
 574         char *dev_name = NULL;
 575         struct fsl_mc_io dpmng  = {0};
 576         struct mc_version mc_ver_info = {0};
 577
 578         rte_mcp_ptr_list = malloc(sizeof(void *) * 1);
 579         if (!rte_mcp_ptr_list) {
 580                 DPAA2_BUS_ERR("Unable to allocate MC portal memory");
 581                 ret = -ENOMEM;
 582                 goto cleanup;
 583         }
 584
 585         dev_name = strdup(dev->device.name);
 586         if (!dev_name) {
 587                 DPAA2_BUS_ERR("Unable to allocate MC device name memory");
 588                 ret = -ENOMEM;
 589                 goto cleanup;
 590         }
 591
 592         v_addr = vfio_map_mcp_obj(&vfio_group, dev_name);
 593         if (v_addr == (intptr_t)MAP_FAILED) {
 594                 DPAA2_BUS_ERR("Error mapping region (errno = %d)", errno);
 595                 ret = -1;
 596                 goto cleanup;
 597         }
 598
 599         /* check the MC version compatibility */
 600         dpmng.regs = (void *)v_addr;
 601         if (mc_get_version(&dpmng, CMD_PRI_LOW, &mc_ver_info)) {
 602                 DPAA2_BUS_ERR("Unable to obtain MC version");
 603                 ret = -1;
 604                 goto cleanup;
 605         }
 606
 607         if ((mc_ver_info.major != MC_VER_MAJOR) ||
 608             (mc_ver_info.minor < MC_VER_MINOR)) {
 609                 DPAA2_BUS_ERR("DPAA2 MC version not compatible!"
 610                               " Expected %d.%d.x, Detected %d.%d.%d",
 611                               MC_VER_MAJOR, MC_VER_MINOR,
 612                               mc_ver_info.major, mc_ver_info.minor,
 613                               mc_ver_info.revision);
 614                 ret = -1;
 615                 goto cleanup;
 616         }
 617         rte_mcp_ptr_list[0] = (void *)v_addr;
 618
 619         free(dev_name);
 620         return 0;
 621
 622 cleanup:
 623         if (dev_name)
 624                 free(dev_name);
 625
 626         if (rte_mcp_ptr_list) {
 627                 free(rte_mcp_ptr_list);
 628                 rte_mcp_ptr_list = NULL;
 629         }
 630
 631         return ret;
 632 }
 633
 634 int
 635 fslmc_vfio_process_group(void)
 636 {
 637         int ret;
 638         int found_mportal = 0;
 639         struct rte_dpaa2_device *dev, *dev_temp;
 640
 641         /* Search the MCP as that should be initialized first. */
 642         TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, dev_temp) {
 643                 if (dev->dev_type == DPAA2_MPORTAL) {
 644                         ret = fslmc_process_mcp(dev);
 645                         if (ret) {
 646                                 DPAA2_BUS_ERR("Unable to map MC Portal");
 647                                 return -1;
 648                         }
 649                         if (!found_mportal)
 650                                 found_mportal = 1;
 651
 652                         TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
 653                         free(dev);
 654                         dev = NULL;
 655                         /* Ideally there is only a single dpmcp, but in case
 656                          * multiple exists, looping on remaining devices.
 657                          */
 658                 }
 659         }
 660
 661         /* Cannot continue if there is not even a single mportal */
 662         if (!found_mportal) {
 663                 DPAA2_BUS_ERR("No MC Portal device found. Not continuing");
 664                 return -1;
 665         }
 666
 667         TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, dev_temp) {
 668                 switch (dev->dev_type) {
 669                 case DPAA2_ETH:
 670                 case DPAA2_CRYPTO:
 671                 case DPAA2_QDMA:
 672                         ret = fslmc_process_iodevices(dev);
 673                         if (ret) {
 674                                 DPAA2_BUS_DEBUG("Dev (%s) init failed",
 675                                                 dev->device.name);
 676                                 return ret;
 677                         }
 678                         break;
 679                 case DPAA2_CON:
 680                 case DPAA2_IO:
 681                 case DPAA2_CI:
 682                 case DPAA2_BPOOL:
 683                         /* Call the object creation routine and remove the
 684                          * device entry from device list
 685                          */
 686                         ret = fslmc_process_iodevices(dev);
 687                         if (ret) {
 688                                 DPAA2_BUS_DEBUG("Dev (%s) init failed",
 689                                                 dev->device.name);
 690                                 return -1;
 691                         }
 692
 693                         /* This device is not required to be in the DPDK
 694                          * exposed device list.
 695                          */
 696                         TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
 697                         free(dev);
 698                         dev = NULL;
 699                         break;
 700                 case DPAA2_UNKNOWN:
 701                 default:
 702                         /* Unknown - ignore */
 703                         DPAA2_BUS_DEBUG("Found unknown device (%s)",
 704                                         dev->device.name);
 705                         TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
 706                         free(dev);
 707                         dev = NULL;
 708                 }
 709         }
 710
 711         return 0;
 712 }
 713
 714 int
 715 fslmc_vfio_setup_group(void)
 716 {
 717         int groupid;
 718         int ret;
 719         struct vfio_group_status status = { .argsz = sizeof(status) };
 720
 721         /* if already done once */
 722         if (container_device_fd)
 723                 return 0;
 724
 725         ret = fslmc_get_container_group(&groupid);
 726         if (ret)
 727                 return ret;
 728
 729         /* In case this group was already opened, continue without any
 730          * processing.
 731          */
 732         if (vfio_group.groupid == groupid) {
 733                 DPAA2_BUS_ERR("groupid already exists %d", groupid);
 734                 return 0;
 735         }
 736
 737         /* Get the actual group fd */
 738         ret = rte_vfio_get_group_fd(groupid);
 739         if (ret < 0)
 740                 return ret;
 741         vfio_group.fd = ret;
 742
 743         /* Check group viability */
 744         ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_STATUS, &status);
 745         if (ret) {
 746                 DPAA2_BUS_ERR("VFIO error getting group status");
 747                 close(vfio_group.fd);
 748                 rte_vfio_clear_group(vfio_group.fd);
 749                 return ret;
 750         }
 751
 752         if (!(status.flags & VFIO_GROUP_FLAGS_VIABLE)) {
 753                 DPAA2_BUS_ERR("VFIO group not viable");
 754                 close(vfio_group.fd);
 755                 rte_vfio_clear_group(vfio_group.fd);
 756                 return -EPERM;
 757         }
 758         /* Since Group is VIABLE, Store the groupid */
 759         vfio_group.groupid = groupid;
 760
 761         /* check if group does not have a container yet */
 762         if (!(status.flags & VFIO_GROUP_FLAGS_CONTAINER_SET)) {
 763                 /* Now connect this IOMMU group to given container */
 764                 ret = vfio_connect_container();
 765                 if (ret) {
 766                         DPAA2_BUS_ERR(
 767                                 "Error connecting container with groupid %d",
 768                                 groupid);
 769                         close(vfio_group.fd);
 770                         rte_vfio_clear_group(vfio_group.fd);
 771                         return ret;
 772                 }
 773         }
 774
 775         /* Get Device information */
 776         ret = ioctl(vfio_group.fd, VFIO_GROUP_GET_DEVICE_FD, g_container);
 777         if (ret < 0) {
 778                 DPAA2_BUS_ERR("Error getting device %s fd from group %d",
 779                               g_container, vfio_group.groupid);
 780                 close(vfio_group.fd);
 781                 rte_vfio_clear_group(vfio_group.fd);
 782                 return ret;
 783         }
 784         container_device_fd = ret;
 785         DPAA2_BUS_DEBUG("VFIO Container FD is [0x%X]",
 786                         container_device_fd);
 787
 788         return 0;
 789 }